[Intel-gfx] [PATCH 1/1] drm/i915: split power-related items into intel_pm module
Eugeni Dodonov
eugeni.dodonov at intel.com
Tue Apr 17 01:06:01 CEST 2012
As previously discussed on irc with Daniel, Ben and Jesse, This patch
moves the power-related functionality into intel_pm module, aiming at
simplifying the intel_display code and make it less cluttered.
The functionality affected by this move are: clock gating, rc6 and rps,
display watermarks, display fifo-related items, cxsr and FBC.
This simplifies intel_display by +/- 2800 lines of code and centralizes
most of the power-related items in one place to simplify future hardware
enablement and subsystems interaction.
CC: Jesse Barnes <jbarnes at virtuousgeek.org>
CC: Ben Widawsky <ben at bwidawsk.net>
CC: Daniel Vetter <daniel.vetter at ffwll.ch>
CC: Chris Wilson <chris at chris-wilson.co.uk>
Signed-off-by: Eugeni Dodonov <eugeni.dodonov at intel.com>
---
drivers/gpu/drm/i915/Makefile | 1 +
drivers/gpu/drm/i915/intel_display.c | 7801 +++++++++++-----------------------
drivers/gpu/drm/i915/intel_drv.h | 58 +
drivers/gpu/drm/i915/intel_pm.c | 2899 +++++++++++++
4 files changed, 5419 insertions(+), 5340 deletions(-)
create mode 100644 drivers/gpu/drm/i915/intel_pm.c
diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
index f801330..b65c06f 100644
--- a/drivers/gpu/drm/i915/Makefile
+++ b/drivers/gpu/drm/i915/Makefile
@@ -23,6 +23,7 @@ i915-y := i915_drv.o i915_dma.o i915_irq.o \
intel_sdvo.o \
intel_modes.o \
intel_panel.o \
+ intel_pm.o \
intel_i2c.o \
intel_fb.o \
intel_tv.o \
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index fdf8c9f..62d96a4 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -1516,7 +1516,7 @@ static void intel_disable_pipe(struct drm_i915_private *dev_priv,
* Plane regs are double buffered, going from enabled->disabled needs a
* trigger in order to latch. The display address reg provides this.
*/
-static void intel_flush_display_plane(struct drm_i915_private *dev_priv,
+void intel_flush_display_plane(struct drm_i915_private *dev_priv,
enum plane plane)
{
I915_WRITE(DSPADDR(plane), I915_READ(DSPADDR(plane)));
@@ -1627,490 +1627,6 @@ static void intel_disable_pch_ports(struct drm_i915_private *dev_priv,
disable_pch_hdmi(dev_priv, pipe, HDMID);
}
-static void i8xx_disable_fbc(struct drm_device *dev)
-{
- struct drm_i915_private *dev_priv = dev->dev_private;
- u32 fbc_ctl;
-
- /* Disable compression */
- fbc_ctl = I915_READ(FBC_CONTROL);
- if ((fbc_ctl & FBC_CTL_EN) == 0)
- return;
-
- fbc_ctl &= ~FBC_CTL_EN;
- I915_WRITE(FBC_CONTROL, fbc_ctl);
-
- /* Wait for compressing bit to clear */
- if (wait_for((I915_READ(FBC_STATUS) & FBC_STAT_COMPRESSING) == 0, 10)) {
- DRM_DEBUG_KMS("FBC idle timed out\n");
- return;
- }
-
- DRM_DEBUG_KMS("disabled FBC\n");
-}
-
-static void i8xx_enable_fbc(struct drm_crtc *crtc, unsigned long interval)
-{
- struct drm_device *dev = crtc->dev;
- struct drm_i915_private *dev_priv = dev->dev_private;
- struct drm_framebuffer *fb = crtc->fb;
- struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
- struct drm_i915_gem_object *obj = intel_fb->obj;
- struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
- int cfb_pitch;
- int plane, i;
- u32 fbc_ctl, fbc_ctl2;
-
- cfb_pitch = dev_priv->cfb_size / FBC_LL_SIZE;
- if (fb->pitches[0] < cfb_pitch)
- cfb_pitch = fb->pitches[0];
-
- /* FBC_CTL wants 64B units */
- cfb_pitch = (cfb_pitch / 64) - 1;
- plane = intel_crtc->plane == 0 ? FBC_CTL_PLANEA : FBC_CTL_PLANEB;
-
- /* Clear old tags */
- for (i = 0; i < (FBC_LL_SIZE / 32) + 1; i++)
- I915_WRITE(FBC_TAG + (i * 4), 0);
-
- /* Set it up... */
- fbc_ctl2 = FBC_CTL_FENCE_DBL | FBC_CTL_IDLE_IMM | FBC_CTL_CPU_FENCE;
- fbc_ctl2 |= plane;
- I915_WRITE(FBC_CONTROL2, fbc_ctl2);
- I915_WRITE(FBC_FENCE_OFF, crtc->y);
-
- /* enable it... */
- fbc_ctl = FBC_CTL_EN | FBC_CTL_PERIODIC;
- if (IS_I945GM(dev))
- fbc_ctl |= FBC_CTL_C3_IDLE; /* 945 needs special SR handling */
- fbc_ctl |= (cfb_pitch & 0xff) << FBC_CTL_STRIDE_SHIFT;
- fbc_ctl |= (interval & 0x2fff) << FBC_CTL_INTERVAL_SHIFT;
- fbc_ctl |= obj->fence_reg;
- I915_WRITE(FBC_CONTROL, fbc_ctl);
-
- DRM_DEBUG_KMS("enabled FBC, pitch %d, yoff %d, plane %d, ",
- cfb_pitch, crtc->y, intel_crtc->plane);
-}
-
-static bool i8xx_fbc_enabled(struct drm_device *dev)
-{
- struct drm_i915_private *dev_priv = dev->dev_private;
-
- return I915_READ(FBC_CONTROL) & FBC_CTL_EN;
-}
-
-static void g4x_enable_fbc(struct drm_crtc *crtc, unsigned long interval)
-{
- struct drm_device *dev = crtc->dev;
- struct drm_i915_private *dev_priv = dev->dev_private;
- struct drm_framebuffer *fb = crtc->fb;
- struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
- struct drm_i915_gem_object *obj = intel_fb->obj;
- struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
- int plane = intel_crtc->plane == 0 ? DPFC_CTL_PLANEA : DPFC_CTL_PLANEB;
- unsigned long stall_watermark = 200;
- u32 dpfc_ctl;
-
- dpfc_ctl = plane | DPFC_SR_EN | DPFC_CTL_LIMIT_1X;
- dpfc_ctl |= DPFC_CTL_FENCE_EN | obj->fence_reg;
- I915_WRITE(DPFC_CHICKEN, DPFC_HT_MODIFY);
-
- I915_WRITE(DPFC_RECOMP_CTL, DPFC_RECOMP_STALL_EN |
- (stall_watermark << DPFC_RECOMP_STALL_WM_SHIFT) |
- (interval << DPFC_RECOMP_TIMER_COUNT_SHIFT));
- I915_WRITE(DPFC_FENCE_YOFF, crtc->y);
-
- /* enable it... */
- I915_WRITE(DPFC_CONTROL, I915_READ(DPFC_CONTROL) | DPFC_CTL_EN);
-
- DRM_DEBUG_KMS("enabled fbc on plane %d\n", intel_crtc->plane);
-}
-
-static void g4x_disable_fbc(struct drm_device *dev)
-{
- struct drm_i915_private *dev_priv = dev->dev_private;
- u32 dpfc_ctl;
-
- /* Disable compression */
- dpfc_ctl = I915_READ(DPFC_CONTROL);
- if (dpfc_ctl & DPFC_CTL_EN) {
- dpfc_ctl &= ~DPFC_CTL_EN;
- I915_WRITE(DPFC_CONTROL, dpfc_ctl);
-
- DRM_DEBUG_KMS("disabled FBC\n");
- }
-}
-
-static bool g4x_fbc_enabled(struct drm_device *dev)
-{
- struct drm_i915_private *dev_priv = dev->dev_private;
-
- return I915_READ(DPFC_CONTROL) & DPFC_CTL_EN;
-}
-
-static void sandybridge_blit_fbc_update(struct drm_device *dev)
-{
- struct drm_i915_private *dev_priv = dev->dev_private;
- u32 blt_ecoskpd;
-
- /* Make sure blitter notifies FBC of writes */
- gen6_gt_force_wake_get(dev_priv);
- blt_ecoskpd = I915_READ(GEN6_BLITTER_ECOSKPD);
- blt_ecoskpd |= GEN6_BLITTER_FBC_NOTIFY <<
- GEN6_BLITTER_LOCK_SHIFT;
- I915_WRITE(GEN6_BLITTER_ECOSKPD, blt_ecoskpd);
- blt_ecoskpd |= GEN6_BLITTER_FBC_NOTIFY;
- I915_WRITE(GEN6_BLITTER_ECOSKPD, blt_ecoskpd);
- blt_ecoskpd &= ~(GEN6_BLITTER_FBC_NOTIFY <<
- GEN6_BLITTER_LOCK_SHIFT);
- I915_WRITE(GEN6_BLITTER_ECOSKPD, blt_ecoskpd);
- POSTING_READ(GEN6_BLITTER_ECOSKPD);
- gen6_gt_force_wake_put(dev_priv);
-}
-
-static void ironlake_enable_fbc(struct drm_crtc *crtc, unsigned long interval)
-{
- struct drm_device *dev = crtc->dev;
- struct drm_i915_private *dev_priv = dev->dev_private;
- struct drm_framebuffer *fb = crtc->fb;
- struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
- struct drm_i915_gem_object *obj = intel_fb->obj;
- struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
- int plane = intel_crtc->plane == 0 ? DPFC_CTL_PLANEA : DPFC_CTL_PLANEB;
- unsigned long stall_watermark = 200;
- u32 dpfc_ctl;
-
- dpfc_ctl = I915_READ(ILK_DPFC_CONTROL);
- dpfc_ctl &= DPFC_RESERVED;
- dpfc_ctl |= (plane | DPFC_CTL_LIMIT_1X);
- /* Set persistent mode for front-buffer rendering, ala X. */
- dpfc_ctl |= DPFC_CTL_PERSISTENT_MODE;
- dpfc_ctl |= (DPFC_CTL_FENCE_EN | obj->fence_reg);
- I915_WRITE(ILK_DPFC_CHICKEN, DPFC_HT_MODIFY);
-
- I915_WRITE(ILK_DPFC_RECOMP_CTL, DPFC_RECOMP_STALL_EN |
- (stall_watermark << DPFC_RECOMP_STALL_WM_SHIFT) |
- (interval << DPFC_RECOMP_TIMER_COUNT_SHIFT));
- I915_WRITE(ILK_DPFC_FENCE_YOFF, crtc->y);
- I915_WRITE(ILK_FBC_RT_BASE, obj->gtt_offset | ILK_FBC_RT_VALID);
- /* enable it... */
- I915_WRITE(ILK_DPFC_CONTROL, dpfc_ctl | DPFC_CTL_EN);
-
- if (IS_GEN6(dev)) {
- I915_WRITE(SNB_DPFC_CTL_SA,
- SNB_CPU_FENCE_ENABLE | obj->fence_reg);
- I915_WRITE(DPFC_CPU_FENCE_OFFSET, crtc->y);
- sandybridge_blit_fbc_update(dev);
- }
-
- DRM_DEBUG_KMS("enabled fbc on plane %d\n", intel_crtc->plane);
-}
-
-static void ironlake_disable_fbc(struct drm_device *dev)
-{
- struct drm_i915_private *dev_priv = dev->dev_private;
- u32 dpfc_ctl;
-
- /* Disable compression */
- dpfc_ctl = I915_READ(ILK_DPFC_CONTROL);
- if (dpfc_ctl & DPFC_CTL_EN) {
- dpfc_ctl &= ~DPFC_CTL_EN;
- I915_WRITE(ILK_DPFC_CONTROL, dpfc_ctl);
-
- DRM_DEBUG_KMS("disabled FBC\n");
- }
-}
-
-static bool ironlake_fbc_enabled(struct drm_device *dev)
-{
- struct drm_i915_private *dev_priv = dev->dev_private;
-
- return I915_READ(ILK_DPFC_CONTROL) & DPFC_CTL_EN;
-}
-
-bool intel_fbc_enabled(struct drm_device *dev)
-{
- struct drm_i915_private *dev_priv = dev->dev_private;
-
- if (!dev_priv->display.fbc_enabled)
- return false;
-
- return dev_priv->display.fbc_enabled(dev);
-}
-
-static void intel_fbc_work_fn(struct work_struct *__work)
-{
- struct intel_fbc_work *work =
- container_of(to_delayed_work(__work),
- struct intel_fbc_work, work);
- struct drm_device *dev = work->crtc->dev;
- struct drm_i915_private *dev_priv = dev->dev_private;
-
- mutex_lock(&dev->struct_mutex);
- if (work == dev_priv->fbc_work) {
- /* Double check that we haven't switched fb without cancelling
- * the prior work.
- */
- if (work->crtc->fb == work->fb) {
- dev_priv->display.enable_fbc(work->crtc,
- work->interval);
-
- dev_priv->cfb_plane = to_intel_crtc(work->crtc)->plane;
- dev_priv->cfb_fb = work->crtc->fb->base.id;
- dev_priv->cfb_y = work->crtc->y;
- }
-
- dev_priv->fbc_work = NULL;
- }
- mutex_unlock(&dev->struct_mutex);
-
- kfree(work);
-}
-
-static void intel_cancel_fbc_work(struct drm_i915_private *dev_priv)
-{
- if (dev_priv->fbc_work == NULL)
- return;
-
- DRM_DEBUG_KMS("cancelling pending FBC enable\n");
-
- /* Synchronisation is provided by struct_mutex and checking of
- * dev_priv->fbc_work, so we can perform the cancellation
- * entirely asynchronously.
- */
- if (cancel_delayed_work(&dev_priv->fbc_work->work))
- /* tasklet was killed before being run, clean up */
- kfree(dev_priv->fbc_work);
-
- /* Mark the work as no longer wanted so that if it does
- * wake-up (because the work was already running and waiting
- * for our mutex), it will discover that is no longer
- * necessary to run.
- */
- dev_priv->fbc_work = NULL;
-}
-
-static void intel_enable_fbc(struct drm_crtc *crtc, unsigned long interval)
-{
- struct intel_fbc_work *work;
- struct drm_device *dev = crtc->dev;
- struct drm_i915_private *dev_priv = dev->dev_private;
-
- if (!dev_priv->display.enable_fbc)
- return;
-
- intel_cancel_fbc_work(dev_priv);
-
- work = kzalloc(sizeof *work, GFP_KERNEL);
- if (work == NULL) {
- dev_priv->display.enable_fbc(crtc, interval);
- return;
- }
-
- work->crtc = crtc;
- work->fb = crtc->fb;
- work->interval = interval;
- INIT_DELAYED_WORK(&work->work, intel_fbc_work_fn);
-
- dev_priv->fbc_work = work;
-
- DRM_DEBUG_KMS("scheduling delayed FBC enable\n");
-
- /* Delay the actual enabling to let pageflipping cease and the
- * display to settle before starting the compression. Note that
- * this delay also serves a second purpose: it allows for a
- * vblank to pass after disabling the FBC before we attempt
- * to modify the control registers.
- *
- * A more complicated solution would involve tracking vblanks
- * following the termination of the page-flipping sequence
- * and indeed performing the enable as a co-routine and not
- * waiting synchronously upon the vblank.
- */
- schedule_delayed_work(&work->work, msecs_to_jiffies(50));
-}
-
-void intel_disable_fbc(struct drm_device *dev)
-{
- struct drm_i915_private *dev_priv = dev->dev_private;
-
- intel_cancel_fbc_work(dev_priv);
-
- if (!dev_priv->display.disable_fbc)
- return;
-
- dev_priv->display.disable_fbc(dev);
- dev_priv->cfb_plane = -1;
-}
-
-/**
- * intel_update_fbc - enable/disable FBC as needed
- * @dev: the drm_device
- *
- * Set up the framebuffer compression hardware at mode set time. We
- * enable it if possible:
- * - plane A only (on pre-965)
- * - no pixel mulitply/line duplication
- * - no alpha buffer discard
- * - no dual wide
- * - framebuffer <= 2048 in width, 1536 in height
- *
- * We can't assume that any compression will take place (worst case),
- * so the compressed buffer has to be the same size as the uncompressed
- * one. It also must reside (along with the line length buffer) in
- * stolen memory.
- *
- * We need to enable/disable FBC on a global basis.
- */
-static void intel_update_fbc(struct drm_device *dev)
-{
- struct drm_i915_private *dev_priv = dev->dev_private;
- struct drm_crtc *crtc = NULL, *tmp_crtc;
- struct intel_crtc *intel_crtc;
- struct drm_framebuffer *fb;
- struct intel_framebuffer *intel_fb;
- struct drm_i915_gem_object *obj;
- int enable_fbc;
-
- DRM_DEBUG_KMS("\n");
-
- if (!i915_powersave)
- return;
-
- if (!I915_HAS_FBC(dev))
- return;
-
- /*
- * If FBC is already on, we just have to verify that we can
- * keep it that way...
- * Need to disable if:
- * - more than one pipe is active
- * - changing FBC params (stride, fence, mode)
- * - new fb is too large to fit in compressed buffer
- * - going to an unsupported config (interlace, pixel multiply, etc.)
- */
- list_for_each_entry(tmp_crtc, &dev->mode_config.crtc_list, head) {
- if (tmp_crtc->enabled && tmp_crtc->fb) {
- if (crtc) {
- DRM_DEBUG_KMS("more than one pipe active, disabling compression\n");
- dev_priv->no_fbc_reason = FBC_MULTIPLE_PIPES;
- goto out_disable;
- }
- crtc = tmp_crtc;
- }
- }
-
- if (!crtc || crtc->fb == NULL) {
- DRM_DEBUG_KMS("no output, disabling\n");
- dev_priv->no_fbc_reason = FBC_NO_OUTPUT;
- goto out_disable;
- }
-
- intel_crtc = to_intel_crtc(crtc);
- fb = crtc->fb;
- intel_fb = to_intel_framebuffer(fb);
- obj = intel_fb->obj;
-
- enable_fbc = i915_enable_fbc;
- if (enable_fbc < 0) {
- DRM_DEBUG_KMS("fbc set to per-chip default\n");
- enable_fbc = 1;
- if (INTEL_INFO(dev)->gen <= 6)
- enable_fbc = 0;
- }
- if (!enable_fbc) {
- DRM_DEBUG_KMS("fbc disabled per module param\n");
- dev_priv->no_fbc_reason = FBC_MODULE_PARAM;
- goto out_disable;
- }
- if (intel_fb->obj->base.size > dev_priv->cfb_size) {
- DRM_DEBUG_KMS("framebuffer too large, disabling "
- "compression\n");
- dev_priv->no_fbc_reason = FBC_STOLEN_TOO_SMALL;
- goto out_disable;
- }
- if ((crtc->mode.flags & DRM_MODE_FLAG_INTERLACE) ||
- (crtc->mode.flags & DRM_MODE_FLAG_DBLSCAN)) {
- DRM_DEBUG_KMS("mode incompatible with compression, "
- "disabling\n");
- dev_priv->no_fbc_reason = FBC_UNSUPPORTED_MODE;
- goto out_disable;
- }
- if ((crtc->mode.hdisplay > 2048) ||
- (crtc->mode.vdisplay > 1536)) {
- DRM_DEBUG_KMS("mode too large for compression, disabling\n");
- dev_priv->no_fbc_reason = FBC_MODE_TOO_LARGE;
- goto out_disable;
- }
- if ((IS_I915GM(dev) || IS_I945GM(dev)) && intel_crtc->plane != 0) {
- DRM_DEBUG_KMS("plane not 0, disabling compression\n");
- dev_priv->no_fbc_reason = FBC_BAD_PLANE;
- goto out_disable;
- }
-
- /* The use of a CPU fence is mandatory in order to detect writes
- * by the CPU to the scanout and trigger updates to the FBC.
- */
- if (obj->tiling_mode != I915_TILING_X ||
- obj->fence_reg == I915_FENCE_REG_NONE) {
- DRM_DEBUG_KMS("framebuffer not tiled or fenced, disabling compression\n");
- dev_priv->no_fbc_reason = FBC_NOT_TILED;
- goto out_disable;
- }
-
- /* If the kernel debugger is active, always disable compression */
- if (in_dbg_master())
- goto out_disable;
-
- /* If the scanout has not changed, don't modify the FBC settings.
- * Note that we make the fundamental assumption that the fb->obj
- * cannot be unpinned (and have its GTT offset and fence revoked)
- * without first being decoupled from the scanout and FBC disabled.
- */
- if (dev_priv->cfb_plane == intel_crtc->plane &&
- dev_priv->cfb_fb == fb->base.id &&
- dev_priv->cfb_y == crtc->y)
- return;
-
- if (intel_fbc_enabled(dev)) {
- /* We update FBC along two paths, after changing fb/crtc
- * configuration (modeswitching) and after page-flipping
- * finishes. For the latter, we know that not only did
- * we disable the FBC at the start of the page-flip
- * sequence, but also more than one vblank has passed.
- *
- * For the former case of modeswitching, it is possible
- * to switch between two FBC valid configurations
- * instantaneously so we do need to disable the FBC
- * before we can modify its control registers. We also
- * have to wait for the next vblank for that to take
- * effect. However, since we delay enabling FBC we can
- * assume that a vblank has passed since disabling and
- * that we can safely alter the registers in the deferred
- * callback.
- *
- * In the scenario that we go from a valid to invalid
- * and then back to valid FBC configuration we have
- * no strict enforcement that a vblank occurred since
- * disabling the FBC. However, along all current pipe
- * disabling paths we do need to wait for a vblank at
- * some point. And we wait before enabling FBC anyway.
- */
- DRM_DEBUG_KMS("disabling active FBC for update\n");
- intel_disable_fbc(dev);
- }
-
- intel_enable_fbc(crtc, 500);
- return;
-
-out_disable:
- /* Multiple disables should be harmless */
- if (intel_fbc_enabled(dev)) {
- DRM_DEBUG_KMS("unsupported config, disabling FBC\n");
- intel_disable_fbc(dev);
- }
-}
-
int
intel_pin_and_fence_fb_obj(struct drm_device *dev,
struct drm_i915_gem_object *obj,
@@ -3667,1802 +3183,1036 @@ ironlake_compute_m_n(int bits_per_pixel, int nlanes, int pixel_clock,
}
-struct intel_watermark_params {
- unsigned long fifo_size;
- unsigned long max_wm;
- unsigned long default_wm;
- unsigned long guard_size;
- unsigned long cacheline_size;
-};
-
-/* Pineview has different values for various configs */
-static const struct intel_watermark_params pineview_display_wm = {
- PINEVIEW_DISPLAY_FIFO,
- PINEVIEW_MAX_WM,
- PINEVIEW_DFT_WM,
- PINEVIEW_GUARD_WM,
- PINEVIEW_FIFO_LINE_SIZE
-};
-static const struct intel_watermark_params pineview_display_hplloff_wm = {
- PINEVIEW_DISPLAY_FIFO,
- PINEVIEW_MAX_WM,
- PINEVIEW_DFT_HPLLOFF_WM,
- PINEVIEW_GUARD_WM,
- PINEVIEW_FIFO_LINE_SIZE
-};
-static const struct intel_watermark_params pineview_cursor_wm = {
- PINEVIEW_CURSOR_FIFO,
- PINEVIEW_CURSOR_MAX_WM,
- PINEVIEW_CURSOR_DFT_WM,
- PINEVIEW_CURSOR_GUARD_WM,
- PINEVIEW_FIFO_LINE_SIZE,
-};
-static const struct intel_watermark_params pineview_cursor_hplloff_wm = {
- PINEVIEW_CURSOR_FIFO,
- PINEVIEW_CURSOR_MAX_WM,
- PINEVIEW_CURSOR_DFT_WM,
- PINEVIEW_CURSOR_GUARD_WM,
- PINEVIEW_FIFO_LINE_SIZE
-};
-static const struct intel_watermark_params g4x_wm_info = {
- G4X_FIFO_SIZE,
- G4X_MAX_WM,
- G4X_MAX_WM,
- 2,
- G4X_FIFO_LINE_SIZE,
-};
-static const struct intel_watermark_params g4x_cursor_wm_info = {
- I965_CURSOR_FIFO,
- I965_CURSOR_MAX_WM,
- I965_CURSOR_DFT_WM,
- 2,
- G4X_FIFO_LINE_SIZE,
-};
-static const struct intel_watermark_params valleyview_wm_info = {
- VALLEYVIEW_FIFO_SIZE,
- VALLEYVIEW_MAX_WM,
- VALLEYVIEW_MAX_WM,
- 2,
- G4X_FIFO_LINE_SIZE,
-};
-static const struct intel_watermark_params valleyview_cursor_wm_info = {
- I965_CURSOR_FIFO,
- VALLEYVIEW_CURSOR_MAX_WM,
- I965_CURSOR_DFT_WM,
- 2,
- G4X_FIFO_LINE_SIZE,
-};
-static const struct intel_watermark_params i965_cursor_wm_info = {
- I965_CURSOR_FIFO,
- I965_CURSOR_MAX_WM,
- I965_CURSOR_DFT_WM,
- 2,
- I915_FIFO_LINE_SIZE,
-};
-static const struct intel_watermark_params i945_wm_info = {
- I945_FIFO_SIZE,
- I915_MAX_WM,
- 1,
- 2,
- I915_FIFO_LINE_SIZE
-};
-static const struct intel_watermark_params i915_wm_info = {
- I915_FIFO_SIZE,
- I915_MAX_WM,
- 1,
- 2,
- I915_FIFO_LINE_SIZE
-};
-static const struct intel_watermark_params i855_wm_info = {
- I855GM_FIFO_SIZE,
- I915_MAX_WM,
- 1,
- 2,
- I830_FIFO_LINE_SIZE
-};
-static const struct intel_watermark_params i830_wm_info = {
- I830_FIFO_SIZE,
- I915_MAX_WM,
- 1,
- 2,
- I830_FIFO_LINE_SIZE
-};
-
-static const struct intel_watermark_params ironlake_display_wm_info = {
- ILK_DISPLAY_FIFO,
- ILK_DISPLAY_MAXWM,
- ILK_DISPLAY_DFTWM,
- 2,
- ILK_FIFO_LINE_SIZE
-};
-static const struct intel_watermark_params ironlake_cursor_wm_info = {
- ILK_CURSOR_FIFO,
- ILK_CURSOR_MAXWM,
- ILK_CURSOR_DFTWM,
- 2,
- ILK_FIFO_LINE_SIZE
-};
-static const struct intel_watermark_params ironlake_display_srwm_info = {
- ILK_DISPLAY_SR_FIFO,
- ILK_DISPLAY_MAX_SRWM,
- ILK_DISPLAY_DFT_SRWM,
- 2,
- ILK_FIFO_LINE_SIZE
-};
-static const struct intel_watermark_params ironlake_cursor_srwm_info = {
- ILK_CURSOR_SR_FIFO,
- ILK_CURSOR_MAX_SRWM,
- ILK_CURSOR_DFT_SRWM,
- 2,
- ILK_FIFO_LINE_SIZE
-};
-
-static const struct intel_watermark_params sandybridge_display_wm_info = {
- SNB_DISPLAY_FIFO,
- SNB_DISPLAY_MAXWM,
- SNB_DISPLAY_DFTWM,
- 2,
- SNB_FIFO_LINE_SIZE
-};
-static const struct intel_watermark_params sandybridge_cursor_wm_info = {
- SNB_CURSOR_FIFO,
- SNB_CURSOR_MAXWM,
- SNB_CURSOR_DFTWM,
- 2,
- SNB_FIFO_LINE_SIZE
-};
-static const struct intel_watermark_params sandybridge_display_srwm_info = {
- SNB_DISPLAY_SR_FIFO,
- SNB_DISPLAY_MAX_SRWM,
- SNB_DISPLAY_DFT_SRWM,
- 2,
- SNB_FIFO_LINE_SIZE
-};
-static const struct intel_watermark_params sandybridge_cursor_srwm_info = {
- SNB_CURSOR_SR_FIFO,
- SNB_CURSOR_MAX_SRWM,
- SNB_CURSOR_DFT_SRWM,
- 2,
- SNB_FIFO_LINE_SIZE
-};
-
+static inline bool intel_panel_use_ssc(struct drm_i915_private *dev_priv)
+{
+ if (i915_panel_use_ssc >= 0)
+ return i915_panel_use_ssc != 0;
+ return dev_priv->lvds_use_ssc
+ && !(dev_priv->quirks & QUIRK_LVDS_SSC_DISABLE);
+}
/**
- * intel_calculate_wm - calculate watermark level
- * @clock_in_khz: pixel clock
- * @wm: chip FIFO params
- * @pixel_size: display pixel size
- * @latency_ns: memory latency for the platform
+ * intel_choose_pipe_bpp_dither - figure out what color depth the pipe should send
+ * @crtc: CRTC structure
+ * @mode: requested mode
+ *
+ * A pipe may be connected to one or more outputs. Based on the depth of the
+ * attached framebuffer, choose a good color depth to use on the pipe.
*
- * Calculate the watermark level (the level at which the display plane will
- * start fetching from memory again). Each chip has a different display
- * FIFO size and allocation, so the caller needs to figure that out and pass
- * in the correct intel_watermark_params structure.
+ * If possible, match the pipe depth to the fb depth. In some cases, this
+ * isn't ideal, because the connected output supports a lesser or restricted
+ * set of depths. Resolve that here:
+ * LVDS typically supports only 6bpc, so clamp down in that case
+ * HDMI supports only 8bpc or 12bpc, so clamp to 8bpc with dither for 10bpc
+ * Displays may support a restricted set as well, check EDID and clamp as
+ * appropriate.
+ * DP may want to dither down to 6bpc to fit larger modes
*
- * As the pixel clock runs, the FIFO will be drained at a rate that depends
- * on the pixel size. When it reaches the watermark level, it'll start
- * fetching FIFO line sized based chunks from memory until the FIFO fills
- * past the watermark point. If the FIFO drains completely, a FIFO underrun
- * will occur, and a display engine hang could result.
+ * RETURNS:
+ * Dithering requirement (i.e. false if display bpc and pipe bpc match,
+ * true if they don't match).
*/
-static unsigned long intel_calculate_wm(unsigned long clock_in_khz,
- const struct intel_watermark_params *wm,
- int fifo_size,
- int pixel_size,
- unsigned long latency_ns)
+static bool intel_choose_pipe_bpp_dither(struct drm_crtc *crtc,
+ unsigned int *pipe_bpp,
+ struct drm_display_mode *mode)
{
- long entries_required, wm_size;
-
- /*
- * Note: we need to make sure we don't overflow for various clock &
- * latency values.
- * clocks go from a few thousand to several hundred thousand.
- * latency is usually a few thousand
- */
- entries_required = ((clock_in_khz / 1000) * pixel_size * latency_ns) /
- 1000;
- entries_required = DIV_ROUND_UP(entries_required, wm->cacheline_size);
+ struct drm_device *dev = crtc->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_encoder *encoder;
+ struct drm_connector *connector;
+ unsigned int display_bpc = UINT_MAX, bpc;
- DRM_DEBUG_KMS("FIFO entries required for mode: %ld\n", entries_required);
+ /* Walk the encoders & connectors on this crtc, get min bpc */
+ list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
+ struct intel_encoder *intel_encoder = to_intel_encoder(encoder);
- wm_size = fifo_size - (entries_required + wm->guard_size);
+ if (encoder->crtc != crtc)
+ continue;
- DRM_DEBUG_KMS("FIFO watermark level: %ld\n", wm_size);
+ if (intel_encoder->type == INTEL_OUTPUT_LVDS) {
+ unsigned int lvds_bpc;
- /* Don't promote wm_size to unsigned... */
- if (wm_size > (long)wm->max_wm)
- wm_size = wm->max_wm;
- if (wm_size <= 0)
- wm_size = wm->default_wm;
- return wm_size;
-}
-
-struct cxsr_latency {
- int is_desktop;
- int is_ddr3;
- unsigned long fsb_freq;
- unsigned long mem_freq;
- unsigned long display_sr;
- unsigned long display_hpll_disable;
- unsigned long cursor_sr;
- unsigned long cursor_hpll_disable;
-};
+ if ((I915_READ(PCH_LVDS) & LVDS_A3_POWER_MASK) ==
+ LVDS_A3_POWER_UP)
+ lvds_bpc = 8;
+ else
+ lvds_bpc = 6;
-static const struct cxsr_latency cxsr_latency_table[] = {
- {1, 0, 800, 400, 3382, 33382, 3983, 33983}, /* DDR2-400 SC */
- {1, 0, 800, 667, 3354, 33354, 3807, 33807}, /* DDR2-667 SC */
- {1, 0, 800, 800, 3347, 33347, 3763, 33763}, /* DDR2-800 SC */
- {1, 1, 800, 667, 6420, 36420, 6873, 36873}, /* DDR3-667 SC */
- {1, 1, 800, 800, 5902, 35902, 6318, 36318}, /* DDR3-800 SC */
-
- {1, 0, 667, 400, 3400, 33400, 4021, 34021}, /* DDR2-400 SC */
- {1, 0, 667, 667, 3372, 33372, 3845, 33845}, /* DDR2-667 SC */
- {1, 0, 667, 800, 3386, 33386, 3822, 33822}, /* DDR2-800 SC */
- {1, 1, 667, 667, 6438, 36438, 6911, 36911}, /* DDR3-667 SC */
- {1, 1, 667, 800, 5941, 35941, 6377, 36377}, /* DDR3-800 SC */
-
- {1, 0, 400, 400, 3472, 33472, 4173, 34173}, /* DDR2-400 SC */
- {1, 0, 400, 667, 3443, 33443, 3996, 33996}, /* DDR2-667 SC */
- {1, 0, 400, 800, 3430, 33430, 3946, 33946}, /* DDR2-800 SC */
- {1, 1, 400, 667, 6509, 36509, 7062, 37062}, /* DDR3-667 SC */
- {1, 1, 400, 800, 5985, 35985, 6501, 36501}, /* DDR3-800 SC */
-
- {0, 0, 800, 400, 3438, 33438, 4065, 34065}, /* DDR2-400 SC */
- {0, 0, 800, 667, 3410, 33410, 3889, 33889}, /* DDR2-667 SC */
- {0, 0, 800, 800, 3403, 33403, 3845, 33845}, /* DDR2-800 SC */
- {0, 1, 800, 667, 6476, 36476, 6955, 36955}, /* DDR3-667 SC */
- {0, 1, 800, 800, 5958, 35958, 6400, 36400}, /* DDR3-800 SC */
-
- {0, 0, 667, 400, 3456, 33456, 4103, 34106}, /* DDR2-400 SC */
- {0, 0, 667, 667, 3428, 33428, 3927, 33927}, /* DDR2-667 SC */
- {0, 0, 667, 800, 3443, 33443, 3905, 33905}, /* DDR2-800 SC */
- {0, 1, 667, 667, 6494, 36494, 6993, 36993}, /* DDR3-667 SC */
- {0, 1, 667, 800, 5998, 35998, 6460, 36460}, /* DDR3-800 SC */
-
- {0, 0, 400, 400, 3528, 33528, 4255, 34255}, /* DDR2-400 SC */
- {0, 0, 400, 667, 3500, 33500, 4079, 34079}, /* DDR2-667 SC */
- {0, 0, 400, 800, 3487, 33487, 4029, 34029}, /* DDR2-800 SC */
- {0, 1, 400, 667, 6566, 36566, 7145, 37145}, /* DDR3-667 SC */
- {0, 1, 400, 800, 6042, 36042, 6584, 36584}, /* DDR3-800 SC */
-};
+ if (lvds_bpc < display_bpc) {
+ DRM_DEBUG_KMS("clamping display bpc (was %d) to LVDS (%d)\n", display_bpc, lvds_bpc);
+ display_bpc = lvds_bpc;
+ }
+ continue;
+ }
-static const struct cxsr_latency *intel_get_cxsr_latency(int is_desktop,
- int is_ddr3,
- int fsb,
- int mem)
-{
- const struct cxsr_latency *latency;
- int i;
+ if (intel_encoder->type == INTEL_OUTPUT_EDP) {
+ /* Use VBT settings if we have an eDP panel */
+ unsigned int edp_bpc = dev_priv->edp.bpp / 3;
- if (fsb == 0 || mem == 0)
- return NULL;
+ if (edp_bpc < display_bpc) {
+ DRM_DEBUG_KMS("clamping display bpc (was %d) to eDP (%d)\n", display_bpc, edp_bpc);
+ display_bpc = edp_bpc;
+ }
+ continue;
+ }
- for (i = 0; i < ARRAY_SIZE(cxsr_latency_table); i++) {
- latency = &cxsr_latency_table[i];
- if (is_desktop == latency->is_desktop &&
- is_ddr3 == latency->is_ddr3 &&
- fsb == latency->fsb_freq && mem == latency->mem_freq)
- return latency;
- }
+ /* Not one of the known troublemakers, check the EDID */
+ list_for_each_entry(connector, &dev->mode_config.connector_list,
+ head) {
+ if (connector->encoder != encoder)
+ continue;
- DRM_DEBUG_KMS("Unknown FSB/MEM found, disable CxSR\n");
+ /* Don't use an invalid EDID bpc value */
+ if (connector->display_info.bpc &&
+ connector->display_info.bpc < display_bpc) {
+ DRM_DEBUG_KMS("clamping display bpc (was %d) to EDID reported max of %d\n", display_bpc, connector->display_info.bpc);
+ display_bpc = connector->display_info.bpc;
+ }
+ }
- return NULL;
-}
+ /*
+ * HDMI is either 12 or 8, so if the display lets 10bpc sneak
+ * through, clamp it down. (Note: >12bpc will be caught below.)
+ */
+ if (intel_encoder->type == INTEL_OUTPUT_HDMI) {
+ if (display_bpc > 8 && display_bpc < 12) {
+ DRM_DEBUG_KMS("forcing bpc to 12 for HDMI\n");
+ display_bpc = 12;
+ } else {
+ DRM_DEBUG_KMS("forcing bpc to 8 for HDMI\n");
+ display_bpc = 8;
+ }
+ }
+ }
-static void pineview_disable_cxsr(struct drm_device *dev)
-{
- struct drm_i915_private *dev_priv = dev->dev_private;
+ if (mode->private_flags & INTEL_MODE_DP_FORCE_6BPC) {
+ DRM_DEBUG_KMS("Dithering DP to 6bpc\n");
+ display_bpc = 6;
+ }
- /* deactivate cxsr */
- I915_WRITE(DSPFW3, I915_READ(DSPFW3) & ~PINEVIEW_SELF_REFRESH_EN);
-}
+ /*
+ * We could just drive the pipe at the highest bpc all the time and
+ * enable dithering as needed, but that costs bandwidth. So choose
+ * the minimum value that expresses the full color range of the fb but
+ * also stays within the max display bpc discovered above.
+ */
-/*
- * Latency for FIFO fetches is dependent on several factors:
- * - memory configuration (speed, channels)
- * - chipset
- * - current MCH state
- * It can be fairly high in some situations, so here we assume a fairly
- * pessimal value. It's a tradeoff between extra memory fetches (if we
- * set this value too high, the FIFO will fetch frequently to stay full)
- * and power consumption (set it too low to save power and we might see
- * FIFO underruns and display "flicker").
- *
- * A value of 5us seems to be a good balance; safe for very low end
- * platforms but not overly aggressive on lower latency configs.
- */
-static const int latency_ns = 5000;
+ switch (crtc->fb->depth) {
+ case 8:
+ bpc = 8; /* since we go through a colormap */
+ break;
+ case 15:
+ case 16:
+ bpc = 6; /* min is 18bpp */
+ break;
+ case 24:
+ bpc = 8;
+ break;
+ case 30:
+ bpc = 10;
+ break;
+ case 48:
+ bpc = 12;
+ break;
+ default:
+ DRM_DEBUG("unsupported depth, assuming 24 bits\n");
+ bpc = min((unsigned int)8, display_bpc);
+ break;
+ }
-static int i9xx_get_fifo_size(struct drm_device *dev, int plane)
-{
- struct drm_i915_private *dev_priv = dev->dev_private;
- uint32_t dsparb = I915_READ(DSPARB);
- int size;
+ display_bpc = min(display_bpc, bpc);
- size = dsparb & 0x7f;
- if (plane)
- size = ((dsparb >> DSPARB_CSTART_SHIFT) & 0x7f) - size;
+ DRM_DEBUG_KMS("setting pipe bpc to %d (max display bpc %d)\n",
+ bpc, display_bpc);
- DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb,
- plane ? "B" : "A", size);
+ *pipe_bpp = display_bpc * 3;
- return size;
+ return display_bpc != bpc;
}
-static int i85x_get_fifo_size(struct drm_device *dev, int plane)
+static int i9xx_get_refclk(struct drm_crtc *crtc, int num_connectors)
{
+ struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
- uint32_t dsparb = I915_READ(DSPARB);
- int size;
-
- size = dsparb & 0x1ff;
- if (plane)
- size = ((dsparb >> DSPARB_BEND_SHIFT) & 0x1ff) - size;
- size >>= 1; /* Convert to cachelines */
+ int refclk;
- DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb,
- plane ? "B" : "A", size);
+ if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS) &&
+ intel_panel_use_ssc(dev_priv) && num_connectors < 2) {
+ refclk = dev_priv->lvds_ssc_freq * 1000;
+ DRM_DEBUG_KMS("using SSC reference clock of %d MHz\n",
+ refclk / 1000);
+ } else if (!IS_GEN2(dev)) {
+ refclk = 96000;
+ } else {
+ refclk = 48000;
+ }
- return size;
+ return refclk;
}
-static int i845_get_fifo_size(struct drm_device *dev, int plane)
+static void i9xx_adjust_sdvo_tv_clock(struct drm_display_mode *adjusted_mode,
+ intel_clock_t *clock)
{
- struct drm_i915_private *dev_priv = dev->dev_private;
- uint32_t dsparb = I915_READ(DSPARB);
- int size;
-
- size = dsparb & 0x7f;
- size >>= 2; /* Convert to cachelines */
-
- DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb,
- plane ? "B" : "A",
- size);
-
- return size;
+ /* SDVO TV has fixed PLL values depend on its clock range,
+ this mirrors vbios setting. */
+ if (adjusted_mode->clock >= 100000
+ && adjusted_mode->clock < 140500) {
+ clock->p1 = 2;
+ clock->p2 = 10;
+ clock->n = 3;
+ clock->m1 = 16;
+ clock->m2 = 8;
+ } else if (adjusted_mode->clock >= 140500
+ && adjusted_mode->clock <= 200000) {
+ clock->p1 = 1;
+ clock->p2 = 10;
+ clock->n = 6;
+ clock->m1 = 12;
+ clock->m2 = 8;
+ }
}
-static int i830_get_fifo_size(struct drm_device *dev, int plane)
+static void i9xx_update_pll_dividers(struct drm_crtc *crtc,
+ intel_clock_t *clock,
+ intel_clock_t *reduced_clock)
{
+ struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
- uint32_t dsparb = I915_READ(DSPARB);
- int size;
-
- size = dsparb & 0x7f;
- size >>= 1; /* Convert to cachelines */
-
- DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb,
- plane ? "B" : "A", size);
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ int pipe = intel_crtc->pipe;
+ u32 fp, fp2 = 0;
- return size;
-}
+ if (IS_PINEVIEW(dev)) {
+ fp = (1 << clock->n) << 16 | clock->m1 << 8 | clock->m2;
+ if (reduced_clock)
+ fp2 = (1 << reduced_clock->n) << 16 |
+ reduced_clock->m1 << 8 | reduced_clock->m2;
+ } else {
+ fp = clock->n << 16 | clock->m1 << 8 | clock->m2;
+ if (reduced_clock)
+ fp2 = reduced_clock->n << 16 | reduced_clock->m1 << 8 |
+ reduced_clock->m2;
+ }
-static struct drm_crtc *single_enabled_crtc(struct drm_device *dev)
-{
- struct drm_crtc *crtc, *enabled = NULL;
+ I915_WRITE(FP0(pipe), fp);
- list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
- if (crtc->enabled && crtc->fb) {
- if (enabled)
- return NULL;
- enabled = crtc;
- }
+ intel_crtc->lowfreq_avail = false;
+ if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS) &&
+ reduced_clock && i915_powersave) {
+ I915_WRITE(FP1(pipe), fp2);
+ intel_crtc->lowfreq_avail = true;
+ } else {
+ I915_WRITE(FP1(pipe), fp);
}
-
- return enabled;
}
-static void pineview_update_wm(struct drm_device *dev)
+static void intel_update_lvds(struct drm_crtc *crtc, intel_clock_t *clock,
+ struct drm_display_mode *adjusted_mode)
{
+ struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
- struct drm_crtc *crtc;
- const struct cxsr_latency *latency;
- u32 reg;
- unsigned long wm;
-
- latency = intel_get_cxsr_latency(IS_PINEVIEW_G(dev), dev_priv->is_ddr3,
- dev_priv->fsb_freq, dev_priv->mem_freq);
- if (!latency) {
- DRM_DEBUG_KMS("Unknown FSB/MEM found, disable CxSR\n");
- pineview_disable_cxsr(dev);
- return;
- }
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ int pipe = intel_crtc->pipe;
+ u32 temp, lvds_sync = 0;
- crtc = single_enabled_crtc(dev);
- if (crtc) {
- int clock = crtc->mode.clock;
- int pixel_size = crtc->fb->bits_per_pixel / 8;
-
- /* Display SR */
- wm = intel_calculate_wm(clock, &pineview_display_wm,
- pineview_display_wm.fifo_size,
- pixel_size, latency->display_sr);
- reg = I915_READ(DSPFW1);
- reg &= ~DSPFW_SR_MASK;
- reg |= wm << DSPFW_SR_SHIFT;
- I915_WRITE(DSPFW1, reg);
- DRM_DEBUG_KMS("DSPFW1 register is %x\n", reg);
-
- /* cursor SR */
- wm = intel_calculate_wm(clock, &pineview_cursor_wm,
- pineview_display_wm.fifo_size,
- pixel_size, latency->cursor_sr);
- reg = I915_READ(DSPFW3);
- reg &= ~DSPFW_CURSOR_SR_MASK;
- reg |= (wm & 0x3f) << DSPFW_CURSOR_SR_SHIFT;
- I915_WRITE(DSPFW3, reg);
-
- /* Display HPLL off SR */
- wm = intel_calculate_wm(clock, &pineview_display_hplloff_wm,
- pineview_display_hplloff_wm.fifo_size,
- pixel_size, latency->display_hpll_disable);
- reg = I915_READ(DSPFW3);
- reg &= ~DSPFW_HPLL_SR_MASK;
- reg |= wm & DSPFW_HPLL_SR_MASK;
- I915_WRITE(DSPFW3, reg);
-
- /* cursor HPLL off SR */
- wm = intel_calculate_wm(clock, &pineview_cursor_hplloff_wm,
- pineview_display_hplloff_wm.fifo_size,
- pixel_size, latency->cursor_hpll_disable);
- reg = I915_READ(DSPFW3);
- reg &= ~DSPFW_HPLL_CURSOR_MASK;
- reg |= (wm & 0x3f) << DSPFW_HPLL_CURSOR_SHIFT;
- I915_WRITE(DSPFW3, reg);
- DRM_DEBUG_KMS("DSPFW3 register is %x\n", reg);
-
- /* activate cxsr */
- I915_WRITE(DSPFW3,
- I915_READ(DSPFW3) | PINEVIEW_SELF_REFRESH_EN);
- DRM_DEBUG_KMS("Self-refresh is enabled\n");
+ temp = I915_READ(LVDS);
+ temp |= LVDS_PORT_EN | LVDS_A0A2_CLKA_POWER_UP;
+ if (pipe == 1) {
+ temp |= LVDS_PIPEB_SELECT;
} else {
- pineview_disable_cxsr(dev);
- DRM_DEBUG_KMS("Self-refresh is disabled\n");
+ temp &= ~LVDS_PIPEB_SELECT;
}
-}
+ /* set the corresponsding LVDS_BORDER bit */
+ temp |= dev_priv->lvds_border_bits;
+ /* Set the B0-B3 data pairs corresponding to whether we're going to
+ * set the DPLLs for dual-channel mode or not.
+ */
+ if (clock->p2 == 7)
+ temp |= LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP;
+ else
+ temp &= ~(LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP);
-static bool g4x_compute_wm0(struct drm_device *dev,
- int plane,
- const struct intel_watermark_params *display,
- int display_latency_ns,
- const struct intel_watermark_params *cursor,
- int cursor_latency_ns,
- int *plane_wm,
- int *cursor_wm)
-{
- struct drm_crtc *crtc;
- int htotal, hdisplay, clock, pixel_size;
- int line_time_us, line_count;
- int entries, tlb_miss;
-
- crtc = intel_get_crtc_for_plane(dev, plane);
- if (crtc->fb == NULL || !crtc->enabled) {
- *cursor_wm = cursor->guard_size;
- *plane_wm = display->guard_size;
- return false;
+ /* It would be nice to set 24 vs 18-bit mode (LVDS_A3_POWER_UP)
+ * appropriately here, but we need to look more thoroughly into how
+ * panels behave in the two modes.
+ */
+ /* set the dithering flag on LVDS as needed */
+ if (INTEL_INFO(dev)->gen >= 4) {
+ if (dev_priv->lvds_dither)
+ temp |= LVDS_ENABLE_DITHER;
+ else
+ temp &= ~LVDS_ENABLE_DITHER;
}
-
- htotal = crtc->mode.htotal;
- hdisplay = crtc->mode.hdisplay;
- clock = crtc->mode.clock;
- pixel_size = crtc->fb->bits_per_pixel / 8;
-
- /* Use the small buffer method to calculate plane watermark */
- entries = ((clock * pixel_size / 1000) * display_latency_ns) / 1000;
- tlb_miss = display->fifo_size*display->cacheline_size - hdisplay * 8;
- if (tlb_miss > 0)
- entries += tlb_miss;
- entries = DIV_ROUND_UP(entries, display->cacheline_size);
- *plane_wm = entries + display->guard_size;
- if (*plane_wm > (int)display->max_wm)
- *plane_wm = display->max_wm;
-
- /* Use the large buffer method to calculate cursor watermark */
- line_time_us = ((htotal * 1000) / clock);
- line_count = (cursor_latency_ns / line_time_us + 1000) / 1000;
- entries = line_count * 64 * pixel_size;
- tlb_miss = cursor->fifo_size*cursor->cacheline_size - hdisplay * 8;
- if (tlb_miss > 0)
- entries += tlb_miss;
- entries = DIV_ROUND_UP(entries, cursor->cacheline_size);
- *cursor_wm = entries + cursor->guard_size;
- if (*cursor_wm > (int)cursor->max_wm)
- *cursor_wm = (int)cursor->max_wm;
-
- return true;
+ if (adjusted_mode->flags & DRM_MODE_FLAG_NHSYNC)
+ lvds_sync |= LVDS_HSYNC_POLARITY;
+ if (adjusted_mode->flags & DRM_MODE_FLAG_NVSYNC)
+ lvds_sync |= LVDS_VSYNC_POLARITY;
+ if ((temp & (LVDS_HSYNC_POLARITY | LVDS_VSYNC_POLARITY))
+ != lvds_sync) {
+ char flags[2] = "-+";
+ DRM_INFO("Changing LVDS panel from "
+ "(%chsync, %cvsync) to (%chsync, %cvsync)\n",
+ flags[!(temp & LVDS_HSYNC_POLARITY)],
+ flags[!(temp & LVDS_VSYNC_POLARITY)],
+ flags[!(lvds_sync & LVDS_HSYNC_POLARITY)],
+ flags[!(lvds_sync & LVDS_VSYNC_POLARITY)]);
+ temp &= ~(LVDS_HSYNC_POLARITY | LVDS_VSYNC_POLARITY);
+ temp |= lvds_sync;
+ }
+ I915_WRITE(LVDS, temp);
}
-/*
- * Check the wm result.
- *
- * If any calculated watermark values is larger than the maximum value that
- * can be programmed into the associated watermark register, that watermark
- * must be disabled.
- */
-static bool g4x_check_srwm(struct drm_device *dev,
- int display_wm, int cursor_wm,
- const struct intel_watermark_params *display,
- const struct intel_watermark_params *cursor)
+static void i9xx_update_pll(struct drm_crtc *crtc,
+ struct drm_display_mode *mode,
+ struct drm_display_mode *adjusted_mode,
+ intel_clock_t *clock, intel_clock_t *reduced_clock,
+ int num_connectors)
{
- DRM_DEBUG_KMS("SR watermark: display plane %d, cursor %d\n",
- display_wm, cursor_wm);
-
- if (display_wm > display->max_wm) {
- DRM_DEBUG_KMS("display watermark is too large(%d/%ld), disabling\n",
- display_wm, display->max_wm);
- return false;
- }
-
- if (cursor_wm > cursor->max_wm) {
- DRM_DEBUG_KMS("cursor watermark is too large(%d/%ld), disabling\n",
- cursor_wm, cursor->max_wm);
- return false;
- }
+ struct drm_device *dev = crtc->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ int pipe = intel_crtc->pipe;
+ u32 dpll;
+ bool is_sdvo;
- if (!(display_wm || cursor_wm)) {
- DRM_DEBUG_KMS("SR latency is 0, disabling\n");
- return false;
- }
+ is_sdvo = intel_pipe_has_type(crtc, INTEL_OUTPUT_SDVO) ||
+ intel_pipe_has_type(crtc, INTEL_OUTPUT_HDMI);
- return true;
-}
+ dpll = DPLL_VGA_MODE_DIS;
-static bool g4x_compute_srwm(struct drm_device *dev,
- int plane,
- int latency_ns,
- const struct intel_watermark_params *display,
- const struct intel_watermark_params *cursor,
- int *display_wm, int *cursor_wm)
-{
- struct drm_crtc *crtc;
- int hdisplay, htotal, pixel_size, clock;
- unsigned long line_time_us;
- int line_count, line_size;
- int small, large;
- int entries;
-
- if (!latency_ns) {
- *display_wm = *cursor_wm = 0;
- return false;
+ if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS))
+ dpll |= DPLLB_MODE_LVDS;
+ else
+ dpll |= DPLLB_MODE_DAC_SERIAL;
+ if (is_sdvo) {
+ int pixel_multiplier = intel_mode_get_pixel_multiplier(adjusted_mode);
+ if (pixel_multiplier > 1) {
+ if (IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev))
+ dpll |= (pixel_multiplier - 1) << SDVO_MULTIPLIER_SHIFT_HIRES;
+ }
+ dpll |= DPLL_DVO_HIGH_SPEED;
}
+ if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT))
+ dpll |= DPLL_DVO_HIGH_SPEED;
- crtc = intel_get_crtc_for_plane(dev, plane);
- hdisplay = crtc->mode.hdisplay;
- htotal = crtc->mode.htotal;
- clock = crtc->mode.clock;
- pixel_size = crtc->fb->bits_per_pixel / 8;
-
- line_time_us = (htotal * 1000) / clock;
- line_count = (latency_ns / line_time_us + 1000) / 1000;
- line_size = hdisplay * pixel_size;
-
- /* Use the minimum of the small and large buffer method for primary */
- small = ((clock * pixel_size / 1000) * latency_ns) / 1000;
- large = line_count * line_size;
-
- entries = DIV_ROUND_UP(min(small, large), display->cacheline_size);
- *display_wm = entries + display->guard_size;
-
- /* calculate the self-refresh watermark for display cursor */
- entries = line_count * pixel_size * 64;
- entries = DIV_ROUND_UP(entries, cursor->cacheline_size);
- *cursor_wm = entries + cursor->guard_size;
+ /* compute bitmask from p1 value */
+ if (IS_PINEVIEW(dev))
+ dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT_PINEVIEW;
+ else {
+ dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
+ if (IS_G4X(dev) && reduced_clock)
+ dpll |= (1 << (reduced_clock->p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT;
+ }
+ switch (clock->p2) {
+ case 5:
+ dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_5;
+ break;
+ case 7:
+ dpll |= DPLLB_LVDS_P2_CLOCK_DIV_7;
+ break;
+ case 10:
+ dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_10;
+ break;
+ case 14:
+ dpll |= DPLLB_LVDS_P2_CLOCK_DIV_14;
+ break;
+ }
+ if (INTEL_INFO(dev)->gen >= 4)
+ dpll |= (6 << PLL_LOAD_PULSE_PHASE_SHIFT);
- return g4x_check_srwm(dev,
- *display_wm, *cursor_wm,
- display, cursor);
-}
+ if (is_sdvo && intel_pipe_has_type(crtc, INTEL_OUTPUT_TVOUT))
+ dpll |= PLL_REF_INPUT_TVCLKINBC;
+ else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_TVOUT))
+ /* XXX: just matching BIOS for now */
+ /* dpll |= PLL_REF_INPUT_TVCLKINBC; */
+ dpll |= 3;
+ else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS) &&
+ intel_panel_use_ssc(dev_priv) && num_connectors < 2)
+ dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
+ else
+ dpll |= PLL_REF_INPUT_DREFCLK;
-static bool vlv_compute_drain_latency(struct drm_device *dev,
- int plane,
- int *plane_prec_mult,
- int *plane_dl,
- int *cursor_prec_mult,
- int *cursor_dl)
-{
- struct drm_crtc *crtc;
- int clock, pixel_size;
- int entries;
+ dpll |= DPLL_VCO_ENABLE;
+ I915_WRITE(DPLL(pipe), dpll & ~DPLL_VCO_ENABLE);
+ POSTING_READ(DPLL(pipe));
+ udelay(150);
- crtc = intel_get_crtc_for_plane(dev, plane);
- if (crtc->fb == NULL || !crtc->enabled)
- return false;
+ /* The LVDS pin pair needs to be on before the DPLLs are enabled.
+ * This is an exception to the general rule that mode_set doesn't turn
+ * things on.
+ */
+ if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS))
+ intel_update_lvds(crtc, clock, adjusted_mode);
- clock = crtc->mode.clock; /* VESA DOT Clock */
- pixel_size = crtc->fb->bits_per_pixel / 8; /* BPP */
+ if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT))
+ intel_dp_set_m_n(crtc, mode, adjusted_mode);
- entries = (clock / 1000) * pixel_size;
- *plane_prec_mult = (entries > 256) ?
- DRAIN_LATENCY_PRECISION_32 : DRAIN_LATENCY_PRECISION_16;
- *plane_dl = (64 * (*plane_prec_mult) * 4) / ((clock / 1000) *
- pixel_size);
+ I915_WRITE(DPLL(pipe), dpll);
- entries = (clock / 1000) * 4; /* BPP is always 4 for cursor */
- *cursor_prec_mult = (entries > 256) ?
- DRAIN_LATENCY_PRECISION_32 : DRAIN_LATENCY_PRECISION_16;
- *cursor_dl = (64 * (*cursor_prec_mult) * 4) / ((clock / 1000) * 4);
+ /* Wait for the clocks to stabilize. */
+ POSTING_READ(DPLL(pipe));
+ udelay(150);
- return true;
+ if (INTEL_INFO(dev)->gen >= 4) {
+ u32 temp = 0;
+ if (is_sdvo) {
+ temp = intel_mode_get_pixel_multiplier(adjusted_mode);
+ if (temp > 1)
+ temp = (temp - 1) << DPLL_MD_UDI_MULTIPLIER_SHIFT;
+ else
+ temp = 0;
+ }
+ I915_WRITE(DPLL_MD(pipe), temp);
+ } else {
+ /* The pixel multiplier can only be updated once the
+ * DPLL is enabled and the clocks are stable.
+ *
+ * So write it again.
+ */
+ I915_WRITE(DPLL(pipe), dpll);
+ }
}
-/*
- * Update drain latency registers of memory arbiter
- *
- * Valleyview SoC has a new memory arbiter and needs drain latency registers
- * to be programmed. Each plane has a drain latency multiplier and a drain
- * latency value.
- */
-
-static void vlv_update_drain_latency(struct drm_device *dev)
+static void i8xx_update_pll(struct drm_crtc *crtc,
+ struct drm_display_mode *adjusted_mode,
+ intel_clock_t *clock,
+ int num_connectors)
{
+ struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
- int planea_prec, planea_dl, planeb_prec, planeb_dl;
- int cursora_prec, cursora_dl, cursorb_prec, cursorb_dl;
- int plane_prec_mult, cursor_prec_mult; /* Precision multiplier is
- either 16 or 32 */
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ int pipe = intel_crtc->pipe;
+ u32 dpll;
- /* For plane A, Cursor A */
- if (vlv_compute_drain_latency(dev, 0, &plane_prec_mult, &planea_dl,
- &cursor_prec_mult, &cursora_dl)) {
- cursora_prec = (cursor_prec_mult == DRAIN_LATENCY_PRECISION_32) ?
- DDL_CURSORA_PRECISION_32 : DDL_CURSORA_PRECISION_16;
- planea_prec = (plane_prec_mult == DRAIN_LATENCY_PRECISION_32) ?
- DDL_PLANEA_PRECISION_32 : DDL_PLANEA_PRECISION_16;
+ dpll = DPLL_VGA_MODE_DIS;
- I915_WRITE(VLV_DDL1, cursora_prec |
- (cursora_dl << DDL_CURSORA_SHIFT) |
- planea_prec | planea_dl);
+ if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
+ dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
+ } else {
+ if (clock->p1 == 2)
+ dpll |= PLL_P1_DIVIDE_BY_TWO;
+ else
+ dpll |= (clock->p1 - 2) << DPLL_FPA01_P1_POST_DIV_SHIFT;
+ if (clock->p2 == 4)
+ dpll |= PLL_P2_DIVIDE_BY_4;
}
- /* For plane B, Cursor B */
- if (vlv_compute_drain_latency(dev, 1, &plane_prec_mult, &planeb_dl,
- &cursor_prec_mult, &cursorb_dl)) {
- cursorb_prec = (cursor_prec_mult == DRAIN_LATENCY_PRECISION_32) ?
- DDL_CURSORB_PRECISION_32 : DDL_CURSORB_PRECISION_16;
- planeb_prec = (plane_prec_mult == DRAIN_LATENCY_PRECISION_32) ?
- DDL_PLANEB_PRECISION_32 : DDL_PLANEB_PRECISION_16;
+ if (intel_pipe_has_type(crtc, INTEL_OUTPUT_TVOUT))
+ /* XXX: just matching BIOS for now */
+ /* dpll |= PLL_REF_INPUT_TVCLKINBC; */
+ dpll |= 3;
+ else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS) &&
+ intel_panel_use_ssc(dev_priv) && num_connectors < 2)
+ dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
+ else
+ dpll |= PLL_REF_INPUT_DREFCLK;
- I915_WRITE(VLV_DDL2, cursorb_prec |
- (cursorb_dl << DDL_CURSORB_SHIFT) |
- planeb_prec | planeb_dl);
- }
-}
+ dpll |= DPLL_VCO_ENABLE;
+ I915_WRITE(DPLL(pipe), dpll & ~DPLL_VCO_ENABLE);
+ POSTING_READ(DPLL(pipe));
+ udelay(150);
-#define single_plane_enabled(mask) is_power_of_2(mask)
+ I915_WRITE(DPLL(pipe), dpll);
-static void valleyview_update_wm(struct drm_device *dev)
-{
- static const int sr_latency_ns = 12000;
- struct drm_i915_private *dev_priv = dev->dev_private;
- int planea_wm, planeb_wm, cursora_wm, cursorb_wm;
- int plane_sr, cursor_sr;
- unsigned int enabled = 0;
-
- vlv_update_drain_latency(dev);
-
- if (g4x_compute_wm0(dev, 0,
- &valleyview_wm_info, latency_ns,
- &valleyview_cursor_wm_info, latency_ns,
- &planea_wm, &cursora_wm))
- enabled |= 1;
-
- if (g4x_compute_wm0(dev, 1,
- &valleyview_wm_info, latency_ns,
- &valleyview_cursor_wm_info, latency_ns,
- &planeb_wm, &cursorb_wm))
- enabled |= 2;
-
- plane_sr = cursor_sr = 0;
- if (single_plane_enabled(enabled) &&
- g4x_compute_srwm(dev, ffs(enabled) - 1,
- sr_latency_ns,
- &valleyview_wm_info,
- &valleyview_cursor_wm_info,
- &plane_sr, &cursor_sr))
- I915_WRITE(FW_BLC_SELF_VLV, FW_CSPWRDWNEN);
- else
- I915_WRITE(FW_BLC_SELF_VLV,
- I915_READ(FW_BLC_SELF_VLV) & ~FW_CSPWRDWNEN);
+ /* Wait for the clocks to stabilize. */
+ POSTING_READ(DPLL(pipe));
+ udelay(150);
- DRM_DEBUG_KMS("Setting FIFO watermarks - A: plane=%d, cursor=%d, B: plane=%d, cursor=%d, SR: plane=%d, cursor=%d\n",
- planea_wm, cursora_wm,
- planeb_wm, cursorb_wm,
- plane_sr, cursor_sr);
+ /* The LVDS pin pair needs to be on before the DPLLs are enabled.
+ * This is an exception to the general rule that mode_set doesn't turn
+ * things on.
+ */
+ if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS))
+ intel_update_lvds(crtc, clock, adjusted_mode);
- I915_WRITE(DSPFW1,
- (plane_sr << DSPFW_SR_SHIFT) |
- (cursorb_wm << DSPFW_CURSORB_SHIFT) |
- (planeb_wm << DSPFW_PLANEB_SHIFT) |
- planea_wm);
- I915_WRITE(DSPFW2,
- (I915_READ(DSPFW2) & DSPFW_CURSORA_MASK) |
- (cursora_wm << DSPFW_CURSORA_SHIFT));
- I915_WRITE(DSPFW3,
- (I915_READ(DSPFW3) | (cursor_sr << DSPFW_CURSOR_SR_SHIFT)));
+ /* The pixel multiplier can only be updated once the
+ * DPLL is enabled and the clocks are stable.
+ *
+ * So write it again.
+ */
+ I915_WRITE(DPLL(pipe), dpll);
}
-static void g4x_update_wm(struct drm_device *dev)
-{
- static const int sr_latency_ns = 12000;
- struct drm_i915_private *dev_priv = dev->dev_private;
- int planea_wm, planeb_wm, cursora_wm, cursorb_wm;
- int plane_sr, cursor_sr;
- unsigned int enabled = 0;
-
- if (g4x_compute_wm0(dev, 0,
- &g4x_wm_info, latency_ns,
- &g4x_cursor_wm_info, latency_ns,
- &planea_wm, &cursora_wm))
- enabled |= 1;
-
- if (g4x_compute_wm0(dev, 1,
- &g4x_wm_info, latency_ns,
- &g4x_cursor_wm_info, latency_ns,
- &planeb_wm, &cursorb_wm))
- enabled |= 2;
-
- plane_sr = cursor_sr = 0;
- if (single_plane_enabled(enabled) &&
- g4x_compute_srwm(dev, ffs(enabled) - 1,
- sr_latency_ns,
- &g4x_wm_info,
- &g4x_cursor_wm_info,
- &plane_sr, &cursor_sr))
- I915_WRITE(FW_BLC_SELF, FW_BLC_SELF_EN);
- else
- I915_WRITE(FW_BLC_SELF,
- I915_READ(FW_BLC_SELF) & ~FW_BLC_SELF_EN);
-
- DRM_DEBUG_KMS("Setting FIFO watermarks - A: plane=%d, cursor=%d, B: plane=%d, cursor=%d, SR: plane=%d, cursor=%d\n",
- planea_wm, cursora_wm,
- planeb_wm, cursorb_wm,
- plane_sr, cursor_sr);
-
- I915_WRITE(DSPFW1,
- (plane_sr << DSPFW_SR_SHIFT) |
- (cursorb_wm << DSPFW_CURSORB_SHIFT) |
- (planeb_wm << DSPFW_PLANEB_SHIFT) |
- planea_wm);
- I915_WRITE(DSPFW2,
- (I915_READ(DSPFW2) & DSPFW_CURSORA_MASK) |
- (cursora_wm << DSPFW_CURSORA_SHIFT));
- /* HPLL off in SR has some issues on G4x... disable it */
- I915_WRITE(DSPFW3,
- (I915_READ(DSPFW3) & ~DSPFW_HPLL_SR_EN) |
- (cursor_sr << DSPFW_CURSOR_SR_SHIFT));
-}
-
-static void i965_update_wm(struct drm_device *dev)
+static int i9xx_crtc_mode_set(struct drm_crtc *crtc,
+ struct drm_display_mode *mode,
+ struct drm_display_mode *adjusted_mode,
+ int x, int y,
+ struct drm_framebuffer *old_fb)
{
+ struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
- struct drm_crtc *crtc;
- int srwm = 1;
- int cursor_sr = 16;
-
- /* Calc sr entries for one plane configs */
- crtc = single_enabled_crtc(dev);
- if (crtc) {
- /* self-refresh has much higher latency */
- static const int sr_latency_ns = 12000;
- int clock = crtc->mode.clock;
- int htotal = crtc->mode.htotal;
- int hdisplay = crtc->mode.hdisplay;
- int pixel_size = crtc->fb->bits_per_pixel / 8;
- unsigned long line_time_us;
- int entries;
-
- line_time_us = ((htotal * 1000) / clock);
-
- /* Use ns/us then divide to preserve precision */
- entries = (((sr_latency_ns / line_time_us) + 1000) / 1000) *
- pixel_size * hdisplay;
- entries = DIV_ROUND_UP(entries, I915_FIFO_LINE_SIZE);
- srwm = I965_FIFO_SIZE - entries;
- if (srwm < 0)
- srwm = 1;
- srwm &= 0x1ff;
- DRM_DEBUG_KMS("self-refresh entries: %d, wm: %d\n",
- entries, srwm);
-
- entries = (((sr_latency_ns / line_time_us) + 1000) / 1000) *
- pixel_size * 64;
- entries = DIV_ROUND_UP(entries,
- i965_cursor_wm_info.cacheline_size);
- cursor_sr = i965_cursor_wm_info.fifo_size -
- (entries + i965_cursor_wm_info.guard_size);
-
- if (cursor_sr > i965_cursor_wm_info.max_wm)
- cursor_sr = i965_cursor_wm_info.max_wm;
-
- DRM_DEBUG_KMS("self-refresh watermark: display plane %d "
- "cursor %d\n", srwm, cursor_sr);
-
- if (IS_CRESTLINE(dev))
- I915_WRITE(FW_BLC_SELF, FW_BLC_SELF_EN);
- } else {
- /* Turn off self refresh if both pipes are enabled */
- if (IS_CRESTLINE(dev))
- I915_WRITE(FW_BLC_SELF, I915_READ(FW_BLC_SELF)
- & ~FW_BLC_SELF_EN);
- }
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ int pipe = intel_crtc->pipe;
+ int plane = intel_crtc->plane;
+ int refclk, num_connectors = 0;
+ intel_clock_t clock, reduced_clock;
+ u32 dspcntr, pipeconf, vsyncshift;
+ bool ok, has_reduced_clock = false, is_sdvo = false;
+ bool is_lvds = false, is_tv = false, is_dp = false;
+ struct drm_mode_config *mode_config = &dev->mode_config;
+ struct intel_encoder *encoder;
+ const intel_limit_t *limit;
+ int ret;
- DRM_DEBUG_KMS("Setting FIFO watermarks - A: 8, B: 8, C: 8, SR %d\n",
- srwm);
+ list_for_each_entry(encoder, &mode_config->encoder_list, base.head) {
+ if (encoder->base.crtc != crtc)
+ continue;
- /* 965 has limitations... */
- I915_WRITE(DSPFW1, (srwm << DSPFW_SR_SHIFT) |
- (8 << 16) | (8 << 8) | (8 << 0));
- I915_WRITE(DSPFW2, (8 << 8) | (8 << 0));
- /* update cursor SR watermark */
- I915_WRITE(DSPFW3, (cursor_sr << DSPFW_CURSOR_SR_SHIFT));
-}
+ switch (encoder->type) {
+ case INTEL_OUTPUT_LVDS:
+ is_lvds = true;
+ break;
+ case INTEL_OUTPUT_SDVO:
+ case INTEL_OUTPUT_HDMI:
+ is_sdvo = true;
+ if (encoder->needs_tv_clock)
+ is_tv = true;
+ break;
+ case INTEL_OUTPUT_TVOUT:
+ is_tv = true;
+ break;
+ case INTEL_OUTPUT_DISPLAYPORT:
+ is_dp = true;
+ break;
+ }
-static void i9xx_update_wm(struct drm_device *dev)
-{
- struct drm_i915_private *dev_priv = dev->dev_private;
- const struct intel_watermark_params *wm_info;
- uint32_t fwater_lo;
- uint32_t fwater_hi;
- int cwm, srwm = 1;
- int fifo_size;
- int planea_wm, planeb_wm;
- struct drm_crtc *crtc, *enabled = NULL;
-
- if (IS_I945GM(dev))
- wm_info = &i945_wm_info;
- else if (!IS_GEN2(dev))
- wm_info = &i915_wm_info;
- else
- wm_info = &i855_wm_info;
-
- fifo_size = dev_priv->display.get_fifo_size(dev, 0);
- crtc = intel_get_crtc_for_plane(dev, 0);
- if (crtc->enabled && crtc->fb) {
- planea_wm = intel_calculate_wm(crtc->mode.clock,
- wm_info, fifo_size,
- crtc->fb->bits_per_pixel / 8,
- latency_ns);
- enabled = crtc;
- } else
- planea_wm = fifo_size - wm_info->guard_size;
-
- fifo_size = dev_priv->display.get_fifo_size(dev, 1);
- crtc = intel_get_crtc_for_plane(dev, 1);
- if (crtc->enabled && crtc->fb) {
- planeb_wm = intel_calculate_wm(crtc->mode.clock,
- wm_info, fifo_size,
- crtc->fb->bits_per_pixel / 8,
- latency_ns);
- if (enabled == NULL)
- enabled = crtc;
- else
- enabled = NULL;
- } else
- planeb_wm = fifo_size - wm_info->guard_size;
+ num_connectors++;
+ }
- DRM_DEBUG_KMS("FIFO watermarks - A: %d, B: %d\n", planea_wm, planeb_wm);
+ refclk = i9xx_get_refclk(crtc, num_connectors);
/*
- * Overlay gets an aggressive default since video jitter is bad.
+ * Returns a set of divisors for the desired target clock with the given
+ * refclk, or FALSE. The returned values represent the clock equation:
+ * reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2.
*/
- cwm = 2;
-
- /* Play safe and disable self-refresh before adjusting watermarks. */
- if (IS_I945G(dev) || IS_I945GM(dev))
- I915_WRITE(FW_BLC_SELF, FW_BLC_SELF_EN_MASK | 0);
- else if (IS_I915GM(dev))
- I915_WRITE(INSTPM, I915_READ(INSTPM) & ~INSTPM_SELF_EN);
-
- /* Calc sr entries for one plane configs */
- if (HAS_FW_BLC(dev) && enabled) {
- /* self-refresh has much higher latency */
- static const int sr_latency_ns = 6000;
- int clock = enabled->mode.clock;
- int htotal = enabled->mode.htotal;
- int hdisplay = enabled->mode.hdisplay;
- int pixel_size = enabled->fb->bits_per_pixel / 8;
- unsigned long line_time_us;
- int entries;
-
- line_time_us = (htotal * 1000) / clock;
-
- /* Use ns/us then divide to preserve precision */
- entries = (((sr_latency_ns / line_time_us) + 1000) / 1000) *
- pixel_size * hdisplay;
- entries = DIV_ROUND_UP(entries, wm_info->cacheline_size);
- DRM_DEBUG_KMS("self-refresh entries: %d\n", entries);
- srwm = wm_info->fifo_size - entries;
- if (srwm < 0)
- srwm = 1;
-
- if (IS_I945G(dev) || IS_I945GM(dev))
- I915_WRITE(FW_BLC_SELF,
- FW_BLC_SELF_FIFO_MASK | (srwm & 0xff));
- else if (IS_I915GM(dev))
- I915_WRITE(FW_BLC_SELF, srwm & 0x3f);
- }
-
- DRM_DEBUG_KMS("Setting FIFO watermarks - A: %d, B: %d, C: %d, SR %d\n",
- planea_wm, planeb_wm, cwm, srwm);
-
- fwater_lo = ((planeb_wm & 0x3f) << 16) | (planea_wm & 0x3f);
- fwater_hi = (cwm & 0x1f);
-
- /* Set request length to 8 cachelines per fetch */
- fwater_lo = fwater_lo | (1 << 24) | (1 << 8);
- fwater_hi = fwater_hi | (1 << 8);
-
- I915_WRITE(FW_BLC, fwater_lo);
- I915_WRITE(FW_BLC2, fwater_hi);
-
- if (HAS_FW_BLC(dev)) {
- if (enabled) {
- if (IS_I945G(dev) || IS_I945GM(dev))
- I915_WRITE(FW_BLC_SELF,
- FW_BLC_SELF_EN_MASK | FW_BLC_SELF_EN);
- else if (IS_I915GM(dev))
- I915_WRITE(INSTPM, I915_READ(INSTPM) | INSTPM_SELF_EN);
- DRM_DEBUG_KMS("memory self refresh enabled\n");
- } else
- DRM_DEBUG_KMS("memory self refresh disabled\n");
+ limit = intel_limit(crtc, refclk);
+ ok = limit->find_pll(limit, crtc, adjusted_mode->clock, refclk, NULL,
+ &clock);
+ if (!ok) {
+ DRM_ERROR("Couldn't find PLL settings for mode!\n");
+ return -EINVAL;
}
-}
-static void i830_update_wm(struct drm_device *dev)
-{
- struct drm_i915_private *dev_priv = dev->dev_private;
- struct drm_crtc *crtc;
- uint32_t fwater_lo;
- int planea_wm;
+ /* Ensure that the cursor is valid for the new mode before changing... */
+ intel_crtc_update_cursor(crtc, true);
- crtc = single_enabled_crtc(dev);
- if (crtc == NULL)
- return;
+ if (is_lvds && dev_priv->lvds_downclock_avail) {
+ /*
+ * Ensure we match the reduced clock's P to the target clock.
+ * If the clocks don't match, we can't switch the display clock
+ * by using the FP0/FP1. In such case we will disable the LVDS
+ * downclock feature.
+ */
+ has_reduced_clock = limit->find_pll(limit, crtc,
+ dev_priv->lvds_downclock,
+ refclk,
+ &clock,
+ &reduced_clock);
+ }
- planea_wm = intel_calculate_wm(crtc->mode.clock, &i830_wm_info,
- dev_priv->display.get_fifo_size(dev, 0),
- crtc->fb->bits_per_pixel / 8,
- latency_ns);
- fwater_lo = I915_READ(FW_BLC) & ~0xfff;
- fwater_lo |= (3<<8) | planea_wm;
+ if (is_sdvo && is_tv)
+ i9xx_adjust_sdvo_tv_clock(adjusted_mode, &clock);
- DRM_DEBUG_KMS("Setting FIFO watermarks - A: %d\n", planea_wm);
+ i9xx_update_pll_dividers(crtc, &clock, has_reduced_clock ?
+ &reduced_clock : NULL);
- I915_WRITE(FW_BLC, fwater_lo);
-}
+ if (IS_GEN2(dev))
+ i8xx_update_pll(crtc, adjusted_mode, &clock, num_connectors);
+ else
+ i9xx_update_pll(crtc, mode, adjusted_mode, &clock,
+ has_reduced_clock ? &reduced_clock : NULL,
+ num_connectors);
-#define ILK_LP0_PLANE_LATENCY 700
-#define ILK_LP0_CURSOR_LATENCY 1300
+ /* setup pipeconf */
+ pipeconf = I915_READ(PIPECONF(pipe));
-/*
- * Check the wm result.
- *
- * If any calculated watermark values is larger than the maximum value that
- * can be programmed into the associated watermark register, that watermark
- * must be disabled.
- */
-static bool ironlake_check_srwm(struct drm_device *dev, int level,
- int fbc_wm, int display_wm, int cursor_wm,
- const struct intel_watermark_params *display,
- const struct intel_watermark_params *cursor)
-{
- struct drm_i915_private *dev_priv = dev->dev_private;
-
- DRM_DEBUG_KMS("watermark %d: display plane %d, fbc lines %d,"
- " cursor %d\n", level, display_wm, fbc_wm, cursor_wm);
+ /* Set up the display plane register */
+ dspcntr = DISPPLANE_GAMMA_ENABLE;
- if (fbc_wm > SNB_FBC_MAX_SRWM) {
- DRM_DEBUG_KMS("fbc watermark(%d) is too large(%d), disabling wm%d+\n",
- fbc_wm, SNB_FBC_MAX_SRWM, level);
+ if (pipe == 0)
+ dspcntr &= ~DISPPLANE_SEL_PIPE_MASK;
+ else
+ dspcntr |= DISPPLANE_SEL_PIPE_B;
- /* fbc has it's own way to disable FBC WM */
- I915_WRITE(DISP_ARB_CTL,
- I915_READ(DISP_ARB_CTL) | DISP_FBC_WM_DIS);
- return false;
+ if (pipe == 0 && INTEL_INFO(dev)->gen < 4) {
+ /* Enable pixel doubling when the dot clock is > 90% of the (display)
+ * core speed.
+ *
+ * XXX: No double-wide on 915GM pipe B. Is that the only reason for the
+ * pipe == 0 check?
+ */
+ if (mode->clock >
+ dev_priv->display.get_display_clock_speed(dev) * 9 / 10)
+ pipeconf |= PIPECONF_DOUBLE_WIDE;
+ else
+ pipeconf &= ~PIPECONF_DOUBLE_WIDE;
}
- if (display_wm > display->max_wm) {
- DRM_DEBUG_KMS("display watermark(%d) is too large(%d), disabling wm%d+\n",
- display_wm, SNB_DISPLAY_MAX_SRWM, level);
- return false;
+ /* default to 8bpc */
+ pipeconf &= ~(PIPECONF_BPP_MASK | PIPECONF_DITHER_EN);
+ if (is_dp) {
+ if (mode->private_flags & INTEL_MODE_DP_FORCE_6BPC) {
+ pipeconf |= PIPECONF_BPP_6 |
+ PIPECONF_DITHER_EN |
+ PIPECONF_DITHER_TYPE_SP;
+ }
}
- if (cursor_wm > cursor->max_wm) {
- DRM_DEBUG_KMS("cursor watermark(%d) is too large(%d), disabling wm%d+\n",
- cursor_wm, SNB_CURSOR_MAX_SRWM, level);
- return false;
- }
+ DRM_DEBUG_KMS("Mode for pipe %c:\n", pipe == 0 ? 'A' : 'B');
+ drm_mode_debug_printmodeline(mode);
- if (!(fbc_wm || display_wm || cursor_wm)) {
- DRM_DEBUG_KMS("latency %d is 0, disabling wm%d+\n", level, level);
- return false;
+ if (HAS_PIPE_CXSR(dev)) {
+ if (intel_crtc->lowfreq_avail) {
+ DRM_DEBUG_KMS("enabling CxSR downclocking\n");
+ pipeconf |= PIPECONF_CXSR_DOWNCLOCK;
+ } else {
+ DRM_DEBUG_KMS("disabling CxSR downclocking\n");
+ pipeconf &= ~PIPECONF_CXSR_DOWNCLOCK;
+ }
}
- return true;
-}
-
-/*
- * Compute watermark values of WM[1-3],
- */
-static bool ironlake_compute_srwm(struct drm_device *dev, int level, int plane,
- int latency_ns,
- const struct intel_watermark_params *display,
- const struct intel_watermark_params *cursor,
- int *fbc_wm, int *display_wm, int *cursor_wm)
-{
- struct drm_crtc *crtc;
- unsigned long line_time_us;
- int hdisplay, htotal, pixel_size, clock;
- int line_count, line_size;
- int small, large;
- int entries;
-
- if (!latency_ns) {
- *fbc_wm = *display_wm = *cursor_wm = 0;
- return false;
+ pipeconf &= ~PIPECONF_INTERLACE_MASK;
+ if (!IS_GEN2(dev) &&
+ adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE) {
+ pipeconf |= PIPECONF_INTERLACE_W_FIELD_INDICATION;
+ /* the chip adds 2 halflines automatically */
+ adjusted_mode->crtc_vtotal -= 1;
+ adjusted_mode->crtc_vblank_end -= 1;
+ vsyncshift = adjusted_mode->crtc_hsync_start
+ - adjusted_mode->crtc_htotal/2;
+ } else {
+ pipeconf |= PIPECONF_PROGRESSIVE;
+ vsyncshift = 0;
}
- crtc = intel_get_crtc_for_plane(dev, plane);
- hdisplay = crtc->mode.hdisplay;
- htotal = crtc->mode.htotal;
- clock = crtc->mode.clock;
- pixel_size = crtc->fb->bits_per_pixel / 8;
-
- line_time_us = (htotal * 1000) / clock;
- line_count = (latency_ns / line_time_us + 1000) / 1000;
- line_size = hdisplay * pixel_size;
+ if (!IS_GEN3(dev))
+ I915_WRITE(VSYNCSHIFT(pipe), vsyncshift);
- /* Use the minimum of the small and large buffer method for primary */
- small = ((clock * pixel_size / 1000) * latency_ns) / 1000;
- large = line_count * line_size;
+ I915_WRITE(HTOTAL(pipe),
+ (adjusted_mode->crtc_hdisplay - 1) |
+ ((adjusted_mode->crtc_htotal - 1) << 16));
+ I915_WRITE(HBLANK(pipe),
+ (adjusted_mode->crtc_hblank_start - 1) |
+ ((adjusted_mode->crtc_hblank_end - 1) << 16));
+ I915_WRITE(HSYNC(pipe),
+ (adjusted_mode->crtc_hsync_start - 1) |
+ ((adjusted_mode->crtc_hsync_end - 1) << 16));
- entries = DIV_ROUND_UP(min(small, large), display->cacheline_size);
- *display_wm = entries + display->guard_size;
+ I915_WRITE(VTOTAL(pipe),
+ (adjusted_mode->crtc_vdisplay - 1) |
+ ((adjusted_mode->crtc_vtotal - 1) << 16));
+ I915_WRITE(VBLANK(pipe),
+ (adjusted_mode->crtc_vblank_start - 1) |
+ ((adjusted_mode->crtc_vblank_end - 1) << 16));
+ I915_WRITE(VSYNC(pipe),
+ (adjusted_mode->crtc_vsync_start - 1) |
+ ((adjusted_mode->crtc_vsync_end - 1) << 16));
- /*
- * Spec says:
- * FBC WM = ((Final Primary WM * 64) / number of bytes per line) + 2
+ /* pipesrc and dspsize control the size that is scaled from,
+ * which should always be the user's requested size.
*/
- *fbc_wm = DIV_ROUND_UP(*display_wm * 64, line_size) + 2;
-
- /* calculate the self-refresh watermark for display cursor */
- entries = line_count * pixel_size * 64;
- entries = DIV_ROUND_UP(entries, cursor->cacheline_size);
- *cursor_wm = entries + cursor->guard_size;
-
- return ironlake_check_srwm(dev, level,
- *fbc_wm, *display_wm, *cursor_wm,
- display, cursor);
-}
+ I915_WRITE(DSPSIZE(plane),
+ ((mode->vdisplay - 1) << 16) |
+ (mode->hdisplay - 1));
+ I915_WRITE(DSPPOS(plane), 0);
+ I915_WRITE(PIPESRC(pipe),
+ ((mode->hdisplay - 1) << 16) | (mode->vdisplay - 1));
-static void ironlake_update_wm(struct drm_device *dev)
-{
- struct drm_i915_private *dev_priv = dev->dev_private;
- int fbc_wm, plane_wm, cursor_wm;
- unsigned int enabled;
-
- enabled = 0;
- if (g4x_compute_wm0(dev, 0,
- &ironlake_display_wm_info,
- ILK_LP0_PLANE_LATENCY,
- &ironlake_cursor_wm_info,
- ILK_LP0_CURSOR_LATENCY,
- &plane_wm, &cursor_wm)) {
- I915_WRITE(WM0_PIPEA_ILK,
- (plane_wm << WM0_PIPE_PLANE_SHIFT) | cursor_wm);
- DRM_DEBUG_KMS("FIFO watermarks For pipe A -"
- " plane %d, " "cursor: %d\n",
- plane_wm, cursor_wm);
- enabled |= 1;
- }
-
- if (g4x_compute_wm0(dev, 1,
- &ironlake_display_wm_info,
- ILK_LP0_PLANE_LATENCY,
- &ironlake_cursor_wm_info,
- ILK_LP0_CURSOR_LATENCY,
- &plane_wm, &cursor_wm)) {
- I915_WRITE(WM0_PIPEB_ILK,
- (plane_wm << WM0_PIPE_PLANE_SHIFT) | cursor_wm);
- DRM_DEBUG_KMS("FIFO watermarks For pipe B -"
- " plane %d, cursor: %d\n",
- plane_wm, cursor_wm);
- enabled |= 2;
- }
+ I915_WRITE(PIPECONF(pipe), pipeconf);
+ POSTING_READ(PIPECONF(pipe));
+ intel_enable_pipe(dev_priv, pipe, false);
- /*
- * Calculate and update the self-refresh watermark only when one
- * display plane is used.
- */
- I915_WRITE(WM3_LP_ILK, 0);
- I915_WRITE(WM2_LP_ILK, 0);
- I915_WRITE(WM1_LP_ILK, 0);
+ intel_wait_for_vblank(dev, pipe);
- if (!single_plane_enabled(enabled))
- return;
- enabled = ffs(enabled) - 1;
-
- /* WM1 */
- if (!ironlake_compute_srwm(dev, 1, enabled,
- ILK_READ_WM1_LATENCY() * 500,
- &ironlake_display_srwm_info,
- &ironlake_cursor_srwm_info,
- &fbc_wm, &plane_wm, &cursor_wm))
- return;
+ I915_WRITE(DSPCNTR(plane), dspcntr);
+ POSTING_READ(DSPCNTR(plane));
+ intel_enable_plane(dev_priv, plane, pipe);
- I915_WRITE(WM1_LP_ILK,
- WM1_LP_SR_EN |
- (ILK_READ_WM1_LATENCY() << WM1_LP_LATENCY_SHIFT) |
- (fbc_wm << WM1_LP_FBC_SHIFT) |
- (plane_wm << WM1_LP_SR_SHIFT) |
- cursor_wm);
-
- /* WM2 */
- if (!ironlake_compute_srwm(dev, 2, enabled,
- ILK_READ_WM2_LATENCY() * 500,
- &ironlake_display_srwm_info,
- &ironlake_cursor_srwm_info,
- &fbc_wm, &plane_wm, &cursor_wm))
- return;
+ ret = intel_pipe_set_base(crtc, x, y, old_fb);
- I915_WRITE(WM2_LP_ILK,
- WM2_LP_EN |
- (ILK_READ_WM2_LATENCY() << WM1_LP_LATENCY_SHIFT) |
- (fbc_wm << WM1_LP_FBC_SHIFT) |
- (plane_wm << WM1_LP_SR_SHIFT) |
- cursor_wm);
+ intel_update_watermarks(dev);
- /*
- * WM3 is unsupported on ILK, probably because we don't have latency
- * data for that power state
- */
+ return ret;
}
-static void sandybridge_update_wm(struct drm_device *dev)
+/*
+ * Initialize reference clocks when the driver loads
+ */
+void ironlake_init_pch_refclk(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
- int latency = SNB_READ_WM0_LATENCY() * 100; /* In unit 0.1us */
- u32 val;
- int fbc_wm, plane_wm, cursor_wm;
- unsigned int enabled;
-
- enabled = 0;
- if (g4x_compute_wm0(dev, 0,
- &sandybridge_display_wm_info, latency,
- &sandybridge_cursor_wm_info, latency,
- &plane_wm, &cursor_wm)) {
- val = I915_READ(WM0_PIPEA_ILK);
- val &= ~(WM0_PIPE_PLANE_MASK | WM0_PIPE_CURSOR_MASK);
- I915_WRITE(WM0_PIPEA_ILK, val |
- ((plane_wm << WM0_PIPE_PLANE_SHIFT) | cursor_wm));
- DRM_DEBUG_KMS("FIFO watermarks For pipe A -"
- " plane %d, " "cursor: %d\n",
- plane_wm, cursor_wm);
- enabled |= 1;
- }
-
- if (g4x_compute_wm0(dev, 1,
- &sandybridge_display_wm_info, latency,
- &sandybridge_cursor_wm_info, latency,
- &plane_wm, &cursor_wm)) {
- val = I915_READ(WM0_PIPEB_ILK);
- val &= ~(WM0_PIPE_PLANE_MASK | WM0_PIPE_CURSOR_MASK);
- I915_WRITE(WM0_PIPEB_ILK, val |
- ((plane_wm << WM0_PIPE_PLANE_SHIFT) | cursor_wm));
- DRM_DEBUG_KMS("FIFO watermarks For pipe B -"
- " plane %d, cursor: %d\n",
- plane_wm, cursor_wm);
- enabled |= 2;
- }
-
- /* IVB has 3 pipes */
- if (IS_IVYBRIDGE(dev) &&
- g4x_compute_wm0(dev, 2,
- &sandybridge_display_wm_info, latency,
- &sandybridge_cursor_wm_info, latency,
- &plane_wm, &cursor_wm)) {
- val = I915_READ(WM0_PIPEC_IVB);
- val &= ~(WM0_PIPE_PLANE_MASK | WM0_PIPE_CURSOR_MASK);
- I915_WRITE(WM0_PIPEC_IVB, val |
- ((plane_wm << WM0_PIPE_PLANE_SHIFT) | cursor_wm));
- DRM_DEBUG_KMS("FIFO watermarks For pipe C -"
- " plane %d, cursor: %d\n",
- plane_wm, cursor_wm);
- enabled |= 3;
- }
+ struct drm_mode_config *mode_config = &dev->mode_config;
+ struct intel_encoder *encoder;
+ u32 temp;
+ bool has_lvds = false;
+ bool has_cpu_edp = false;
+ bool has_pch_edp = false;
+ bool has_panel = false;
+ bool has_ck505 = false;
+ bool can_ssc = false;
- /*
- * Calculate and update the self-refresh watermark only when one
- * display plane is used.
- *
- * SNB support 3 levels of watermark.
- *
- * WM1/WM2/WM2 watermarks have to be enabled in the ascending order,
- * and disabled in the descending order
- *
- */
- I915_WRITE(WM3_LP_ILK, 0);
- I915_WRITE(WM2_LP_ILK, 0);
- I915_WRITE(WM1_LP_ILK, 0);
+ /* We need to take the global config into account */
+ list_for_each_entry(encoder, &mode_config->encoder_list,
+ base.head) {
+ switch (encoder->type) {
+ case INTEL_OUTPUT_LVDS:
+ has_panel = true;
+ has_lvds = true;
+ break;
+ case INTEL_OUTPUT_EDP:
+ has_panel = true;
+ if (intel_encoder_is_pch_edp(&encoder->base))
+ has_pch_edp = true;
+ else
+ has_cpu_edp = true;
+ break;
+ }
+ }
- if (!single_plane_enabled(enabled) ||
- dev_priv->sprite_scaling_enabled)
- return;
- enabled = ffs(enabled) - 1;
-
- /* WM1 */
- if (!ironlake_compute_srwm(dev, 1, enabled,
- SNB_READ_WM1_LATENCY() * 500,
- &sandybridge_display_srwm_info,
- &sandybridge_cursor_srwm_info,
- &fbc_wm, &plane_wm, &cursor_wm))
- return;
+ if (HAS_PCH_IBX(dev)) {
+ has_ck505 = dev_priv->display_clock_mode;
+ can_ssc = has_ck505;
+ } else {
+ has_ck505 = false;
+ can_ssc = true;
+ }
- I915_WRITE(WM1_LP_ILK,
- WM1_LP_SR_EN |
- (SNB_READ_WM1_LATENCY() << WM1_LP_LATENCY_SHIFT) |
- (fbc_wm << WM1_LP_FBC_SHIFT) |
- (plane_wm << WM1_LP_SR_SHIFT) |
- cursor_wm);
-
- /* WM2 */
- if (!ironlake_compute_srwm(dev, 2, enabled,
- SNB_READ_WM2_LATENCY() * 500,
- &sandybridge_display_srwm_info,
- &sandybridge_cursor_srwm_info,
- &fbc_wm, &plane_wm, &cursor_wm))
- return;
+ DRM_DEBUG_KMS("has_panel %d has_lvds %d has_pch_edp %d has_cpu_edp %d has_ck505 %d\n",
+ has_panel, has_lvds, has_pch_edp, has_cpu_edp,
+ has_ck505);
- I915_WRITE(WM2_LP_ILK,
- WM2_LP_EN |
- (SNB_READ_WM2_LATENCY() << WM1_LP_LATENCY_SHIFT) |
- (fbc_wm << WM1_LP_FBC_SHIFT) |
- (plane_wm << WM1_LP_SR_SHIFT) |
- cursor_wm);
-
- /* WM3 */
- if (!ironlake_compute_srwm(dev, 3, enabled,
- SNB_READ_WM3_LATENCY() * 500,
- &sandybridge_display_srwm_info,
- &sandybridge_cursor_srwm_info,
- &fbc_wm, &plane_wm, &cursor_wm))
- return;
+ /* Ironlake: try to setup display ref clock before DPLL
+ * enabling. This is only under driver's control after
+ * PCH B stepping, previous chipset stepping should be
+ * ignoring this setting.
+ */
+ temp = I915_READ(PCH_DREF_CONTROL);
+ /* Always enable nonspread source */
+ temp &= ~DREF_NONSPREAD_SOURCE_MASK;
- I915_WRITE(WM3_LP_ILK,
- WM3_LP_EN |
- (SNB_READ_WM3_LATENCY() << WM1_LP_LATENCY_SHIFT) |
- (fbc_wm << WM1_LP_FBC_SHIFT) |
- (plane_wm << WM1_LP_SR_SHIFT) |
- cursor_wm);
-}
+ if (has_ck505)
+ temp |= DREF_NONSPREAD_CK505_ENABLE;
+ else
+ temp |= DREF_NONSPREAD_SOURCE_ENABLE;
-static bool
-sandybridge_compute_sprite_wm(struct drm_device *dev, int plane,
- uint32_t sprite_width, int pixel_size,
- const struct intel_watermark_params *display,
- int display_latency_ns, int *sprite_wm)
-{
- struct drm_crtc *crtc;
- int clock;
- int entries, tlb_miss;
+ if (has_panel) {
+ temp &= ~DREF_SSC_SOURCE_MASK;
+ temp |= DREF_SSC_SOURCE_ENABLE;
- crtc = intel_get_crtc_for_plane(dev, plane);
- if (crtc->fb == NULL || !crtc->enabled) {
- *sprite_wm = display->guard_size;
- return false;
- }
+ /* SSC must be turned on before enabling the CPU output */
+ if (intel_panel_use_ssc(dev_priv) && can_ssc) {
+ DRM_DEBUG_KMS("Using SSC on panel\n");
+ temp |= DREF_SSC1_ENABLE;
+ } else
+ temp &= ~DREF_SSC1_ENABLE;
- clock = crtc->mode.clock;
+ /* Get SSC going before enabling the outputs */
+ I915_WRITE(PCH_DREF_CONTROL, temp);
+ POSTING_READ(PCH_DREF_CONTROL);
+ udelay(200);
- /* Use the small buffer method to calculate the sprite watermark */
- entries = ((clock * pixel_size / 1000) * display_latency_ns) / 1000;
- tlb_miss = display->fifo_size*display->cacheline_size -
- sprite_width * 8;
- if (tlb_miss > 0)
- entries += tlb_miss;
- entries = DIV_ROUND_UP(entries, display->cacheline_size);
- *sprite_wm = entries + display->guard_size;
- if (*sprite_wm > (int)display->max_wm)
- *sprite_wm = display->max_wm;
+ temp &= ~DREF_CPU_SOURCE_OUTPUT_MASK;
- return true;
-}
+ /* Enable CPU source on CPU attached eDP */
+ if (has_cpu_edp) {
+ if (intel_panel_use_ssc(dev_priv) && can_ssc) {
+ DRM_DEBUG_KMS("Using SSC on eDP\n");
+ temp |= DREF_CPU_SOURCE_OUTPUT_DOWNSPREAD;
+ }
+ else
+ temp |= DREF_CPU_SOURCE_OUTPUT_NONSPREAD;
+ } else
+ temp |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
-static bool
-sandybridge_compute_sprite_srwm(struct drm_device *dev, int plane,
- uint32_t sprite_width, int pixel_size,
- const struct intel_watermark_params *display,
- int latency_ns, int *sprite_wm)
-{
- struct drm_crtc *crtc;
- unsigned long line_time_us;
- int clock;
- int line_count, line_size;
- int small, large;
- int entries;
-
- if (!latency_ns) {
- *sprite_wm = 0;
- return false;
- }
+ I915_WRITE(PCH_DREF_CONTROL, temp);
+ POSTING_READ(PCH_DREF_CONTROL);
+ udelay(200);
+ } else {
+ DRM_DEBUG_KMS("Disabling SSC entirely\n");
- crtc = intel_get_crtc_for_plane(dev, plane);
- clock = crtc->mode.clock;
- if (!clock) {
- *sprite_wm = 0;
- return false;
- }
+ temp &= ~DREF_CPU_SOURCE_OUTPUT_MASK;
- line_time_us = (sprite_width * 1000) / clock;
- if (!line_time_us) {
- *sprite_wm = 0;
- return false;
- }
+ /* Turn off CPU output */
+ temp |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
- line_count = (latency_ns / line_time_us + 1000) / 1000;
- line_size = sprite_width * pixel_size;
+ I915_WRITE(PCH_DREF_CONTROL, temp);
+ POSTING_READ(PCH_DREF_CONTROL);
+ udelay(200);
- /* Use the minimum of the small and large buffer method for primary */
- small = ((clock * pixel_size / 1000) * latency_ns) / 1000;
- large = line_count * line_size;
+ /* Turn off the SSC source */
+ temp &= ~DREF_SSC_SOURCE_MASK;
+ temp |= DREF_SSC_SOURCE_DISABLE;
- entries = DIV_ROUND_UP(min(small, large), display->cacheline_size);
- *sprite_wm = entries + display->guard_size;
+ /* Turn off SSC1 */
+ temp &= ~ DREF_SSC1_ENABLE;
- return *sprite_wm > 0x3ff ? false : true;
+ I915_WRITE(PCH_DREF_CONTROL, temp);
+ POSTING_READ(PCH_DREF_CONTROL);
+ udelay(200);
+ }
}
-static void sandybridge_update_sprite_wm(struct drm_device *dev, int pipe,
- uint32_t sprite_width, int pixel_size)
+static int ironlake_get_refclk(struct drm_crtc *crtc)
{
+ struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
- int latency = SNB_READ_WM0_LATENCY() * 100; /* In unit 0.1us */
- u32 val;
- int sprite_wm, reg;
- int ret;
+ struct intel_encoder *encoder;
+ struct drm_mode_config *mode_config = &dev->mode_config;
+ struct intel_encoder *edp_encoder = NULL;
+ int num_connectors = 0;
+ bool is_lvds = false;
- switch (pipe) {
- case 0:
- reg = WM0_PIPEA_ILK;
- break;
- case 1:
- reg = WM0_PIPEB_ILK;
- break;
- case 2:
- reg = WM0_PIPEC_IVB;
- break;
- default:
- return; /* bad pipe */
- }
-
- ret = sandybridge_compute_sprite_wm(dev, pipe, sprite_width, pixel_size,
- &sandybridge_display_wm_info,
- latency, &sprite_wm);
- if (!ret) {
- DRM_DEBUG_KMS("failed to compute sprite wm for pipe %d\n",
- pipe);
- return;
- }
-
- val = I915_READ(reg);
- val &= ~WM0_PIPE_SPRITE_MASK;
- I915_WRITE(reg, val | (sprite_wm << WM0_PIPE_SPRITE_SHIFT));
- DRM_DEBUG_KMS("sprite watermarks For pipe %d - %d\n", pipe, sprite_wm);
-
-
- ret = sandybridge_compute_sprite_srwm(dev, pipe, sprite_width,
- pixel_size,
- &sandybridge_display_srwm_info,
- SNB_READ_WM1_LATENCY() * 500,
- &sprite_wm);
- if (!ret) {
- DRM_DEBUG_KMS("failed to compute sprite lp1 wm on pipe %d\n",
- pipe);
- return;
- }
- I915_WRITE(WM1S_LP_ILK, sprite_wm);
-
- /* Only IVB has two more LP watermarks for sprite */
- if (!IS_IVYBRIDGE(dev))
- return;
+ list_for_each_entry(encoder, &mode_config->encoder_list, base.head) {
+ if (encoder->base.crtc != crtc)
+ continue;
- ret = sandybridge_compute_sprite_srwm(dev, pipe, sprite_width,
- pixel_size,
- &sandybridge_display_srwm_info,
- SNB_READ_WM2_LATENCY() * 500,
- &sprite_wm);
- if (!ret) {
- DRM_DEBUG_KMS("failed to compute sprite lp2 wm on pipe %d\n",
- pipe);
- return;
+ switch (encoder->type) {
+ case INTEL_OUTPUT_LVDS:
+ is_lvds = true;
+ break;
+ case INTEL_OUTPUT_EDP:
+ edp_encoder = encoder;
+ break;
+ }
+ num_connectors++;
}
- I915_WRITE(WM2S_LP_IVB, sprite_wm);
- ret = sandybridge_compute_sprite_srwm(dev, pipe, sprite_width,
- pixel_size,
- &sandybridge_display_srwm_info,
- SNB_READ_WM3_LATENCY() * 500,
- &sprite_wm);
- if (!ret) {
- DRM_DEBUG_KMS("failed to compute sprite lp3 wm on pipe %d\n",
- pipe);
- return;
+ if (is_lvds && intel_panel_use_ssc(dev_priv) && num_connectors < 2) {
+ DRM_DEBUG_KMS("using SSC reference clock of %d MHz\n",
+ dev_priv->lvds_ssc_freq);
+ return dev_priv->lvds_ssc_freq * 1000;
}
- I915_WRITE(WM3S_LP_IVB, sprite_wm);
-}
-
-/**
- * intel_update_watermarks - update FIFO watermark values based on current modes
- *
- * Calculate watermark values for the various WM regs based on current mode
- * and plane configuration.
- *
- * There are several cases to deal with here:
- * - normal (i.e. non-self-refresh)
- * - self-refresh (SR) mode
- * - lines are large relative to FIFO size (buffer can hold up to 2)
- * - lines are small relative to FIFO size (buffer can hold more than 2
- * lines), so need to account for TLB latency
- *
- * The normal calculation is:
- * watermark = dotclock * bytes per pixel * latency
- * where latency is platform & configuration dependent (we assume pessimal
- * values here).
- *
- * The SR calculation is:
- * watermark = (trunc(latency/line time)+1) * surface width *
- * bytes per pixel
- * where
- * line time = htotal / dotclock
- * surface width = hdisplay for normal plane and 64 for cursor
- * and latency is assumed to be high, as above.
- *
- * The final value programmed to the register should always be rounded up,
- * and include an extra 2 entries to account for clock crossings.
- *
- * We don't use the sprite, so we can ignore that. And on Crestline we have
- * to set the non-SR watermarks to 8.
- */
-void intel_update_watermarks(struct drm_device *dev)
-{
- struct drm_i915_private *dev_priv = dev->dev_private;
-
- if (dev_priv->display.update_wm)
- dev_priv->display.update_wm(dev);
-}
-
-void intel_update_sprite_watermarks(struct drm_device *dev, int pipe,
- uint32_t sprite_width, int pixel_size)
-{
- struct drm_i915_private *dev_priv = dev->dev_private;
-
- if (dev_priv->display.update_sprite_wm)
- dev_priv->display.update_sprite_wm(dev, pipe, sprite_width,
- pixel_size);
-}
-static inline bool intel_panel_use_ssc(struct drm_i915_private *dev_priv)
-{
- if (i915_panel_use_ssc >= 0)
- return i915_panel_use_ssc != 0;
- return dev_priv->lvds_use_ssc
- && !(dev_priv->quirks & QUIRK_LVDS_SSC_DISABLE);
+ return 120000;
}
-/**
- * intel_choose_pipe_bpp_dither - figure out what color depth the pipe should send
- * @crtc: CRTC structure
- * @mode: requested mode
- *
- * A pipe may be connected to one or more outputs. Based on the depth of the
- * attached framebuffer, choose a good color depth to use on the pipe.
- *
- * If possible, match the pipe depth to the fb depth. In some cases, this
- * isn't ideal, because the connected output supports a lesser or restricted
- * set of depths. Resolve that here:
- * LVDS typically supports only 6bpc, so clamp down in that case
- * HDMI supports only 8bpc or 12bpc, so clamp to 8bpc with dither for 10bpc
- * Displays may support a restricted set as well, check EDID and clamp as
- * appropriate.
- * DP may want to dither down to 6bpc to fit larger modes
- *
- * RETURNS:
- * Dithering requirement (i.e. false if display bpc and pipe bpc match,
- * true if they don't match).
- */
-static bool intel_choose_pipe_bpp_dither(struct drm_crtc *crtc,
- unsigned int *pipe_bpp,
- struct drm_display_mode *mode)
+static int ironlake_crtc_mode_set(struct drm_crtc *crtc,
+ struct drm_display_mode *mode,
+ struct drm_display_mode *adjusted_mode,
+ int x, int y,
+ struct drm_framebuffer *old_fb)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
- struct drm_encoder *encoder;
- struct drm_connector *connector;
- unsigned int display_bpc = UINT_MAX, bpc;
-
- /* Walk the encoders & connectors on this crtc, get min bpc */
- list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
- struct intel_encoder *intel_encoder = to_intel_encoder(encoder);
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ int pipe = intel_crtc->pipe;
+ int plane = intel_crtc->plane;
+ int refclk, num_connectors = 0;
+ intel_clock_t clock, reduced_clock;
+ u32 dpll, fp = 0, fp2 = 0, dspcntr, pipeconf;
+ bool ok, has_reduced_clock = false, is_sdvo = false;
+ bool is_crt = false, is_lvds = false, is_tv = false, is_dp = false;
+ struct drm_mode_config *mode_config = &dev->mode_config;
+ struct intel_encoder *encoder, *edp_encoder = NULL;
+ const intel_limit_t *limit;
+ int ret;
+ struct fdi_m_n m_n = {0};
+ u32 temp;
+ u32 lvds_sync = 0;
+ int target_clock, pixel_multiplier, lane, link_bw, factor;
+ unsigned int pipe_bpp;
+ bool dither;
+ bool is_cpu_edp = false, is_pch_edp = false;
- if (encoder->crtc != crtc)
+ list_for_each_entry(encoder, &mode_config->encoder_list, base.head) {
+ if (encoder->base.crtc != crtc)
continue;
- if (intel_encoder->type == INTEL_OUTPUT_LVDS) {
- unsigned int lvds_bpc;
-
- if ((I915_READ(PCH_LVDS) & LVDS_A3_POWER_MASK) ==
- LVDS_A3_POWER_UP)
- lvds_bpc = 8;
+ switch (encoder->type) {
+ case INTEL_OUTPUT_LVDS:
+ is_lvds = true;
+ break;
+ case INTEL_OUTPUT_SDVO:
+ case INTEL_OUTPUT_HDMI:
+ is_sdvo = true;
+ if (encoder->needs_tv_clock)
+ is_tv = true;
+ break;
+ case INTEL_OUTPUT_TVOUT:
+ is_tv = true;
+ break;
+ case INTEL_OUTPUT_ANALOG:
+ is_crt = true;
+ break;
+ case INTEL_OUTPUT_DISPLAYPORT:
+ is_dp = true;
+ break;
+ case INTEL_OUTPUT_EDP:
+ is_dp = true;
+ if (intel_encoder_is_pch_edp(&encoder->base))
+ is_pch_edp = true;
else
- lvds_bpc = 6;
-
- if (lvds_bpc < display_bpc) {
- DRM_DEBUG_KMS("clamping display bpc (was %d) to LVDS (%d)\n", display_bpc, lvds_bpc);
- display_bpc = lvds_bpc;
- }
- continue;
+ is_cpu_edp = true;
+ edp_encoder = encoder;
+ break;
}
- if (intel_encoder->type == INTEL_OUTPUT_EDP) {
- /* Use VBT settings if we have an eDP panel */
- unsigned int edp_bpc = dev_priv->edp.bpp / 3;
+ num_connectors++;
+ }
- if (edp_bpc < display_bpc) {
- DRM_DEBUG_KMS("clamping display bpc (was %d) to eDP (%d)\n", display_bpc, edp_bpc);
- display_bpc = edp_bpc;
- }
- continue;
- }
+ refclk = ironlake_get_refclk(crtc);
- /* Not one of the known troublemakers, check the EDID */
- list_for_each_entry(connector, &dev->mode_config.connector_list,
- head) {
- if (connector->encoder != encoder)
- continue;
+ /*
+ * Returns a set of divisors for the desired target clock with the given
+ * refclk, or FALSE. The returned values represent the clock equation:
+ * reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2.
+ */
+ limit = intel_limit(crtc, refclk);
+ ok = limit->find_pll(limit, crtc, adjusted_mode->clock, refclk, NULL,
+ &clock);
+ if (!ok) {
+ DRM_ERROR("Couldn't find PLL settings for mode!\n");
+ return -EINVAL;
+ }
- /* Don't use an invalid EDID bpc value */
- if (connector->display_info.bpc &&
- connector->display_info.bpc < display_bpc) {
- DRM_DEBUG_KMS("clamping display bpc (was %d) to EDID reported max of %d\n", display_bpc, connector->display_info.bpc);
- display_bpc = connector->display_info.bpc;
- }
- }
+ /* Ensure that the cursor is valid for the new mode before changing... */
+ intel_crtc_update_cursor(crtc, true);
+ if (is_lvds && dev_priv->lvds_downclock_avail) {
/*
- * HDMI is either 12 or 8, so if the display lets 10bpc sneak
- * through, clamp it down. (Note: >12bpc will be caught below.)
- */
- if (intel_encoder->type == INTEL_OUTPUT_HDMI) {
- if (display_bpc > 8 && display_bpc < 12) {
- DRM_DEBUG_KMS("forcing bpc to 12 for HDMI\n");
- display_bpc = 12;
- } else {
- DRM_DEBUG_KMS("forcing bpc to 8 for HDMI\n");
- display_bpc = 8;
- }
- }
+ * Ensure we match the reduced clock's P to the target clock.
+ * If the clocks don't match, we can't switch the display clock
+ * by using the FP0/FP1. In such case we will disable the LVDS
+ * downclock feature.
+ */
+ has_reduced_clock = limit->find_pll(limit, crtc,
+ dev_priv->lvds_downclock,
+ refclk,
+ &clock,
+ &reduced_clock);
}
-
- if (mode->private_flags & INTEL_MODE_DP_FORCE_6BPC) {
- DRM_DEBUG_KMS("Dithering DP to 6bpc\n");
- display_bpc = 6;
+ /* SDVO TV has fixed PLL values depend on its clock range,
+ this mirrors vbios setting. */
+ if (is_sdvo && is_tv) {
+ if (adjusted_mode->clock >= 100000
+ && adjusted_mode->clock < 140500) {
+ clock.p1 = 2;
+ clock.p2 = 10;
+ clock.n = 3;
+ clock.m1 = 16;
+ clock.m2 = 8;
+ } else if (adjusted_mode->clock >= 140500
+ && adjusted_mode->clock <= 200000) {
+ clock.p1 = 1;
+ clock.p2 = 10;
+ clock.n = 6;
+ clock.m1 = 12;
+ clock.m2 = 8;
+ }
}
- /*
- * We could just drive the pipe at the highest bpc all the time and
- * enable dithering as needed, but that costs bandwidth. So choose
- * the minimum value that expresses the full color range of the fb but
- * also stays within the max display bpc discovered above.
- */
+ /* FDI link */
+ pixel_multiplier = intel_mode_get_pixel_multiplier(adjusted_mode);
+ lane = 0;
+ /* CPU eDP doesn't require FDI link, so just set DP M/N
+ according to current link config */
+ if (is_cpu_edp) {
+ target_clock = mode->clock;
+ intel_edp_link_config(edp_encoder, &lane, &link_bw);
+ } else {
+ /* [e]DP over FDI requires target mode clock
+ instead of link clock */
+ if (is_dp)
+ target_clock = mode->clock;
+ else
+ target_clock = adjusted_mode->clock;
- switch (crtc->fb->depth) {
- case 8:
- bpc = 8; /* since we go through a colormap */
- break;
- case 15:
- case 16:
- bpc = 6; /* min is 18bpp */
+ /* FDI is a binary signal running at ~2.7GHz, encoding
+ * each output octet as 10 bits. The actual frequency
+ * is stored as a divider into a 100MHz clock, and the
+ * mode pixel clock is stored in units of 1KHz.
+ * Hence the bw of each lane in terms of the mode signal
+ * is:
+ */
+ link_bw = intel_fdi_link_freq(dev) * MHz(100)/KHz(1)/10;
+ }
+
+ /* determine panel color depth */
+ temp = I915_READ(PIPECONF(pipe));
+ temp &= ~PIPE_BPC_MASK;
+ dither = intel_choose_pipe_bpp_dither(crtc, &pipe_bpp, mode);
+ switch (pipe_bpp) {
+ case 18:
+ temp |= PIPE_6BPC;
break;
case 24:
- bpc = 8;
+ temp |= PIPE_8BPC;
break;
case 30:
- bpc = 10;
+ temp |= PIPE_10BPC;
break;
- case 48:
- bpc = 12;
+ case 36:
+ temp |= PIPE_12BPC;
break;
default:
- DRM_DEBUG("unsupported depth, assuming 24 bits\n");
- bpc = min((unsigned int)8, display_bpc);
+ WARN(1, "intel_choose_pipe_bpp returned invalid value %d\n",
+ pipe_bpp);
+ temp |= PIPE_8BPC;
+ pipe_bpp = 24;
break;
}
- display_bpc = min(display_bpc, bpc);
-
- DRM_DEBUG_KMS("setting pipe bpc to %d (max display bpc %d)\n",
- bpc, display_bpc);
-
- *pipe_bpp = display_bpc * 3;
-
- return display_bpc != bpc;
-}
-
-static int i9xx_get_refclk(struct drm_crtc *crtc, int num_connectors)
-{
- struct drm_device *dev = crtc->dev;
- struct drm_i915_private *dev_priv = dev->dev_private;
- int refclk;
-
- if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS) &&
- intel_panel_use_ssc(dev_priv) && num_connectors < 2) {
- refclk = dev_priv->lvds_ssc_freq * 1000;
- DRM_DEBUG_KMS("using SSC reference clock of %d MHz\n",
- refclk / 1000);
- } else if (!IS_GEN2(dev)) {
- refclk = 96000;
- } else {
- refclk = 48000;
- }
-
- return refclk;
-}
-
-static void i9xx_adjust_sdvo_tv_clock(struct drm_display_mode *adjusted_mode,
- intel_clock_t *clock)
-{
- /* SDVO TV has fixed PLL values depend on its clock range,
- this mirrors vbios setting. */
- if (adjusted_mode->clock >= 100000
- && adjusted_mode->clock < 140500) {
- clock->p1 = 2;
- clock->p2 = 10;
- clock->n = 3;
- clock->m1 = 16;
- clock->m2 = 8;
- } else if (adjusted_mode->clock >= 140500
- && adjusted_mode->clock <= 200000) {
- clock->p1 = 1;
- clock->p2 = 10;
- clock->n = 6;
- clock->m1 = 12;
- clock->m2 = 8;
- }
-}
-
-static void i9xx_update_pll_dividers(struct drm_crtc *crtc,
- intel_clock_t *clock,
- intel_clock_t *reduced_clock)
-{
- struct drm_device *dev = crtc->dev;
- struct drm_i915_private *dev_priv = dev->dev_private;
- struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
- int pipe = intel_crtc->pipe;
- u32 fp, fp2 = 0;
-
- if (IS_PINEVIEW(dev)) {
- fp = (1 << clock->n) << 16 | clock->m1 << 8 | clock->m2;
- if (reduced_clock)
- fp2 = (1 << reduced_clock->n) << 16 |
- reduced_clock->m1 << 8 | reduced_clock->m2;
- } else {
- fp = clock->n << 16 | clock->m1 << 8 | clock->m2;
- if (reduced_clock)
- fp2 = reduced_clock->n << 16 | reduced_clock->m1 << 8 |
- reduced_clock->m2;
- }
-
- I915_WRITE(FP0(pipe), fp);
+ intel_crtc->bpp = pipe_bpp;
+ I915_WRITE(PIPECONF(pipe), temp);
- intel_crtc->lowfreq_avail = false;
- if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS) &&
- reduced_clock && i915_powersave) {
- I915_WRITE(FP1(pipe), fp2);
- intel_crtc->lowfreq_avail = true;
- } else {
- I915_WRITE(FP1(pipe), fp);
+ if (!lane) {
+ /*
+ * Account for spread spectrum to avoid
+ * oversubscribing the link. Max center spread
+ * is 2.5%; use 5% for safety's sake.
+ */
+ u32 bps = target_clock * intel_crtc->bpp * 21 / 20;
+ lane = bps / (link_bw * 8) + 1;
}
-}
-static void intel_update_lvds(struct drm_crtc *crtc, intel_clock_t *clock,
- struct drm_display_mode *adjusted_mode)
-{
- struct drm_device *dev = crtc->dev;
- struct drm_i915_private *dev_priv = dev->dev_private;
- struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
- int pipe = intel_crtc->pipe;
- u32 temp, lvds_sync = 0;
+ intel_crtc->fdi_lanes = lane;
- temp = I915_READ(LVDS);
- temp |= LVDS_PORT_EN | LVDS_A0A2_CLKA_POWER_UP;
- if (pipe == 1) {
- temp |= LVDS_PIPEB_SELECT;
- } else {
- temp &= ~LVDS_PIPEB_SELECT;
- }
- /* set the corresponsding LVDS_BORDER bit */
- temp |= dev_priv->lvds_border_bits;
- /* Set the B0-B3 data pairs corresponding to whether we're going to
- * set the DPLLs for dual-channel mode or not.
- */
- if (clock->p2 == 7)
- temp |= LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP;
- else
- temp &= ~(LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP);
+ if (pixel_multiplier > 1)
+ link_bw *= pixel_multiplier;
+ ironlake_compute_m_n(intel_crtc->bpp, lane, target_clock, link_bw,
+ &m_n);
- /* It would be nice to set 24 vs 18-bit mode (LVDS_A3_POWER_UP)
- * appropriately here, but we need to look more thoroughly into how
- * panels behave in the two modes.
- */
- /* set the dithering flag on LVDS as needed */
- if (INTEL_INFO(dev)->gen >= 4) {
- if (dev_priv->lvds_dither)
- temp |= LVDS_ENABLE_DITHER;
- else
- temp &= ~LVDS_ENABLE_DITHER;
- }
- if (adjusted_mode->flags & DRM_MODE_FLAG_NHSYNC)
- lvds_sync |= LVDS_HSYNC_POLARITY;
- if (adjusted_mode->flags & DRM_MODE_FLAG_NVSYNC)
- lvds_sync |= LVDS_VSYNC_POLARITY;
- if ((temp & (LVDS_HSYNC_POLARITY | LVDS_VSYNC_POLARITY))
- != lvds_sync) {
- char flags[2] = "-+";
- DRM_INFO("Changing LVDS panel from "
- "(%chsync, %cvsync) to (%chsync, %cvsync)\n",
- flags[!(temp & LVDS_HSYNC_POLARITY)],
- flags[!(temp & LVDS_VSYNC_POLARITY)],
- flags[!(lvds_sync & LVDS_HSYNC_POLARITY)],
- flags[!(lvds_sync & LVDS_VSYNC_POLARITY)]);
- temp &= ~(LVDS_HSYNC_POLARITY | LVDS_VSYNC_POLARITY);
- temp |= lvds_sync;
- }
- I915_WRITE(LVDS, temp);
-}
+ fp = clock.n << 16 | clock.m1 << 8 | clock.m2;
+ if (has_reduced_clock)
+ fp2 = reduced_clock.n << 16 | reduced_clock.m1 << 8 |
+ reduced_clock.m2;
-static void i9xx_update_pll(struct drm_crtc *crtc,
- struct drm_display_mode *mode,
- struct drm_display_mode *adjusted_mode,
- intel_clock_t *clock, intel_clock_t *reduced_clock,
- int num_connectors)
-{
- struct drm_device *dev = crtc->dev;
- struct drm_i915_private *dev_priv = dev->dev_private;
- struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
- int pipe = intel_crtc->pipe;
- u32 dpll;
- bool is_sdvo;
+ /* Enable autotuning of the PLL clock (if permissible) */
+ factor = 21;
+ if (is_lvds) {
+ if ((intel_panel_use_ssc(dev_priv) &&
+ dev_priv->lvds_ssc_freq == 100) ||
+ (I915_READ(PCH_LVDS) & LVDS_CLKB_POWER_MASK) == LVDS_CLKB_POWER_UP)
+ factor = 25;
+ } else if (is_sdvo && is_tv)
+ factor = 20;
- is_sdvo = intel_pipe_has_type(crtc, INTEL_OUTPUT_SDVO) ||
- intel_pipe_has_type(crtc, INTEL_OUTPUT_HDMI);
+ if (clock.m < factor * clock.n)
+ fp |= FP_CB_TUNE;
- dpll = DPLL_VGA_MODE_DIS;
+ dpll = 0;
- if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS))
+ if (is_lvds)
dpll |= DPLLB_MODE_LVDS;
else
dpll |= DPLLB_MODE_DAC_SERIAL;
if (is_sdvo) {
int pixel_multiplier = intel_mode_get_pixel_multiplier(adjusted_mode);
if (pixel_multiplier > 1) {
- if (IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev))
- dpll |= (pixel_multiplier - 1) << SDVO_MULTIPLIER_SHIFT_HIRES;
+ dpll |= (pixel_multiplier - 1) << PLL_REF_SDVO_HDMI_MULTIPLIER_SHIFT;
}
dpll |= DPLL_DVO_HIGH_SPEED;
}
- if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT))
+ if (is_dp && !is_cpu_edp)
dpll |= DPLL_DVO_HIGH_SPEED;
/* compute bitmask from p1 value */
- if (IS_PINEVIEW(dev))
- dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT_PINEVIEW;
- else {
- dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
- if (IS_G4X(dev) && reduced_clock)
- dpll |= (1 << (reduced_clock->p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT;
- }
- switch (clock->p2) {
+ dpll |= (1 << (clock.p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
+ /* also FPA1 */
+ dpll |= (1 << (clock.p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT;
+
+ switch (clock.p2) {
case 5:
dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_5;
break;
@@ -5476,317 +4226,205 @@ static void i9xx_update_pll(struct drm_crtc *crtc,
dpll |= DPLLB_LVDS_P2_CLOCK_DIV_14;
break;
}
- if (INTEL_INFO(dev)->gen >= 4)
- dpll |= (6 << PLL_LOAD_PULSE_PHASE_SHIFT);
- if (is_sdvo && intel_pipe_has_type(crtc, INTEL_OUTPUT_TVOUT))
+ if (is_sdvo && is_tv)
dpll |= PLL_REF_INPUT_TVCLKINBC;
- else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_TVOUT))
+ else if (is_tv)
/* XXX: just matching BIOS for now */
/* dpll |= PLL_REF_INPUT_TVCLKINBC; */
dpll |= 3;
- else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS) &&
- intel_panel_use_ssc(dev_priv) && num_connectors < 2)
+ else if (is_lvds && intel_panel_use_ssc(dev_priv) && num_connectors < 2)
dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
else
dpll |= PLL_REF_INPUT_DREFCLK;
- dpll |= DPLL_VCO_ENABLE;
- I915_WRITE(DPLL(pipe), dpll & ~DPLL_VCO_ENABLE);
- POSTING_READ(DPLL(pipe));
- udelay(150);
+ /* setup pipeconf */
+ pipeconf = I915_READ(PIPECONF(pipe));
- /* The LVDS pin pair needs to be on before the DPLLs are enabled.
+ /* Set up the display plane register */
+ dspcntr = DISPPLANE_GAMMA_ENABLE;
+
+ DRM_DEBUG_KMS("Mode for pipe %d:\n", pipe);
+ drm_mode_debug_printmodeline(mode);
+
+ /* PCH eDP needs FDI, but CPU eDP does not */
+ if (!intel_crtc->no_pll) {
+ if (!is_cpu_edp) {
+ I915_WRITE(PCH_FP0(pipe), fp);
+ I915_WRITE(PCH_DPLL(pipe), dpll & ~DPLL_VCO_ENABLE);
+
+ POSTING_READ(PCH_DPLL(pipe));
+ udelay(150);
+ }
+ } else {
+ if (dpll == (I915_READ(PCH_DPLL(0)) & 0x7fffffff) &&
+ fp == I915_READ(PCH_FP0(0))) {
+ intel_crtc->use_pll_a = true;
+ DRM_DEBUG_KMS("using pipe a dpll\n");
+ } else if (dpll == (I915_READ(PCH_DPLL(1)) & 0x7fffffff) &&
+ fp == I915_READ(PCH_FP0(1))) {
+ intel_crtc->use_pll_a = false;
+ DRM_DEBUG_KMS("using pipe b dpll\n");
+ } else {
+ DRM_DEBUG_KMS("no matching PLL configuration for pipe 2\n");
+ return -EINVAL;
+ }
+ }
+
+ /* The LVDS pin pair needs to be on before the DPLLs are enabled.
* This is an exception to the general rule that mode_set doesn't turn
* things on.
*/
- if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS))
- intel_update_lvds(crtc, clock, adjusted_mode);
+ if (is_lvds) {
+ temp = I915_READ(PCH_LVDS);
+ temp |= LVDS_PORT_EN | LVDS_A0A2_CLKA_POWER_UP;
+ if (HAS_PCH_CPT(dev)) {
+ temp &= ~PORT_TRANS_SEL_MASK;
+ temp |= PORT_TRANS_SEL_CPT(pipe);
+ } else {
+ if (pipe == 1)
+ temp |= LVDS_PIPEB_SELECT;
+ else
+ temp &= ~LVDS_PIPEB_SELECT;
+ }
- if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT))
+ /* set the corresponsding LVDS_BORDER bit */
+ temp |= dev_priv->lvds_border_bits;
+ /* Set the B0-B3 data pairs corresponding to whether we're going to
+ * set the DPLLs for dual-channel mode or not.
+ */
+ if (clock.p2 == 7)
+ temp |= LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP;
+ else
+ temp &= ~(LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP);
+
+ /* It would be nice to set 24 vs 18-bit mode (LVDS_A3_POWER_UP)
+ * appropriately here, but we need to look more thoroughly into how
+ * panels behave in the two modes.
+ */
+ if (adjusted_mode->flags & DRM_MODE_FLAG_NHSYNC)
+ lvds_sync |= LVDS_HSYNC_POLARITY;
+ if (adjusted_mode->flags & DRM_MODE_FLAG_NVSYNC)
+ lvds_sync |= LVDS_VSYNC_POLARITY;
+ if ((temp & (LVDS_HSYNC_POLARITY | LVDS_VSYNC_POLARITY))
+ != lvds_sync) {
+ char flags[2] = "-+";
+ DRM_INFO("Changing LVDS panel from "
+ "(%chsync, %cvsync) to (%chsync, %cvsync)\n",
+ flags[!(temp & LVDS_HSYNC_POLARITY)],
+ flags[!(temp & LVDS_VSYNC_POLARITY)],
+ flags[!(lvds_sync & LVDS_HSYNC_POLARITY)],
+ flags[!(lvds_sync & LVDS_VSYNC_POLARITY)]);
+ temp &= ~(LVDS_HSYNC_POLARITY | LVDS_VSYNC_POLARITY);
+ temp |= lvds_sync;
+ }
+ I915_WRITE(PCH_LVDS, temp);
+ }
+
+ pipeconf &= ~PIPECONF_DITHER_EN;
+ pipeconf &= ~PIPECONF_DITHER_TYPE_MASK;
+ if ((is_lvds && dev_priv->lvds_dither) || dither) {
+ pipeconf |= PIPECONF_DITHER_EN;
+ pipeconf |= PIPECONF_DITHER_TYPE_SP;
+ }
+ if (is_dp && !is_cpu_edp) {
intel_dp_set_m_n(crtc, mode, adjusted_mode);
+ } else {
+ /* For non-DP output, clear any trans DP clock recovery setting.*/
+ I915_WRITE(TRANSDATA_M1(pipe), 0);
+ I915_WRITE(TRANSDATA_N1(pipe), 0);
+ I915_WRITE(TRANSDPLINK_M1(pipe), 0);
+ I915_WRITE(TRANSDPLINK_N1(pipe), 0);
+ }
- I915_WRITE(DPLL(pipe), dpll);
+ if (!intel_crtc->no_pll && (!edp_encoder || is_pch_edp)) {
+ I915_WRITE(PCH_DPLL(pipe), dpll);
- /* Wait for the clocks to stabilize. */
- POSTING_READ(DPLL(pipe));
- udelay(150);
+ /* Wait for the clocks to stabilize. */
+ POSTING_READ(PCH_DPLL(pipe));
+ udelay(150);
- if (INTEL_INFO(dev)->gen >= 4) {
- u32 temp = 0;
- if (is_sdvo) {
- temp = intel_mode_get_pixel_multiplier(adjusted_mode);
- if (temp > 1)
- temp = (temp - 1) << DPLL_MD_UDI_MULTIPLIER_SHIFT;
- else
- temp = 0;
- }
- I915_WRITE(DPLL_MD(pipe), temp);
- } else {
/* The pixel multiplier can only be updated once the
* DPLL is enabled and the clocks are stable.
*
* So write it again.
*/
- I915_WRITE(DPLL(pipe), dpll);
+ I915_WRITE(PCH_DPLL(pipe), dpll);
}
-}
-
-static void i8xx_update_pll(struct drm_crtc *crtc,
- struct drm_display_mode *adjusted_mode,
- intel_clock_t *clock,
- int num_connectors)
-{
- struct drm_device *dev = crtc->dev;
- struct drm_i915_private *dev_priv = dev->dev_private;
- struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
- int pipe = intel_crtc->pipe;
- u32 dpll;
- dpll = DPLL_VGA_MODE_DIS;
+ intel_crtc->lowfreq_avail = false;
+ if (!intel_crtc->no_pll) {
+ if (is_lvds && has_reduced_clock && i915_powersave) {
+ I915_WRITE(PCH_FP1(pipe), fp2);
+ intel_crtc->lowfreq_avail = true;
+ if (HAS_PIPE_CXSR(dev)) {
+ DRM_DEBUG_KMS("enabling CxSR downclocking\n");
+ pipeconf |= PIPECONF_CXSR_DOWNCLOCK;
+ }
+ } else {
+ I915_WRITE(PCH_FP1(pipe), fp);
+ if (HAS_PIPE_CXSR(dev)) {
+ DRM_DEBUG_KMS("disabling CxSR downclocking\n");
+ pipeconf &= ~PIPECONF_CXSR_DOWNCLOCK;
+ }
+ }
+ }
- if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
- dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
+ pipeconf &= ~PIPECONF_INTERLACE_MASK;
+ if (adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE) {
+ pipeconf |= PIPECONF_INTERLACED_ILK;
+ /* the chip adds 2 halflines automatically */
+ adjusted_mode->crtc_vtotal -= 1;
+ adjusted_mode->crtc_vblank_end -= 1;
+ I915_WRITE(VSYNCSHIFT(pipe),
+ adjusted_mode->crtc_hsync_start
+ - adjusted_mode->crtc_htotal/2);
} else {
- if (clock->p1 == 2)
- dpll |= PLL_P1_DIVIDE_BY_TWO;
- else
- dpll |= (clock->p1 - 2) << DPLL_FPA01_P1_POST_DIV_SHIFT;
- if (clock->p2 == 4)
- dpll |= PLL_P2_DIVIDE_BY_4;
+ pipeconf |= PIPECONF_PROGRESSIVE;
+ I915_WRITE(VSYNCSHIFT(pipe), 0);
}
- if (intel_pipe_has_type(crtc, INTEL_OUTPUT_TVOUT))
- /* XXX: just matching BIOS for now */
- /* dpll |= PLL_REF_INPUT_TVCLKINBC; */
- dpll |= 3;
- else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS) &&
- intel_panel_use_ssc(dev_priv) && num_connectors < 2)
- dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
- else
- dpll |= PLL_REF_INPUT_DREFCLK;
+ I915_WRITE(HTOTAL(pipe),
+ (adjusted_mode->crtc_hdisplay - 1) |
+ ((adjusted_mode->crtc_htotal - 1) << 16));
+ I915_WRITE(HBLANK(pipe),
+ (adjusted_mode->crtc_hblank_start - 1) |
+ ((adjusted_mode->crtc_hblank_end - 1) << 16));
+ I915_WRITE(HSYNC(pipe),
+ (adjusted_mode->crtc_hsync_start - 1) |
+ ((adjusted_mode->crtc_hsync_end - 1) << 16));
- dpll |= DPLL_VCO_ENABLE;
- I915_WRITE(DPLL(pipe), dpll & ~DPLL_VCO_ENABLE);
- POSTING_READ(DPLL(pipe));
- udelay(150);
+ I915_WRITE(VTOTAL(pipe),
+ (adjusted_mode->crtc_vdisplay - 1) |
+ ((adjusted_mode->crtc_vtotal - 1) << 16));
+ I915_WRITE(VBLANK(pipe),
+ (adjusted_mode->crtc_vblank_start - 1) |
+ ((adjusted_mode->crtc_vblank_end - 1) << 16));
+ I915_WRITE(VSYNC(pipe),
+ (adjusted_mode->crtc_vsync_start - 1) |
+ ((adjusted_mode->crtc_vsync_end - 1) << 16));
- I915_WRITE(DPLL(pipe), dpll);
+ /* pipesrc controls the size that is scaled from, which should
+ * always be the user's requested size.
+ */
+ I915_WRITE(PIPESRC(pipe),
+ ((mode->hdisplay - 1) << 16) | (mode->vdisplay - 1));
- /* Wait for the clocks to stabilize. */
- POSTING_READ(DPLL(pipe));
- udelay(150);
+ I915_WRITE(PIPE_DATA_M1(pipe), TU_SIZE(m_n.tu) | m_n.gmch_m);
+ I915_WRITE(PIPE_DATA_N1(pipe), m_n.gmch_n);
+ I915_WRITE(PIPE_LINK_M1(pipe), m_n.link_m);
+ I915_WRITE(PIPE_LINK_N1(pipe), m_n.link_n);
- /* The LVDS pin pair needs to be on before the DPLLs are enabled.
- * This is an exception to the general rule that mode_set doesn't turn
- * things on.
- */
- if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS))
- intel_update_lvds(crtc, clock, adjusted_mode);
+ if (is_cpu_edp)
+ ironlake_set_pll_edp(crtc, adjusted_mode->clock);
- /* The pixel multiplier can only be updated once the
- * DPLL is enabled and the clocks are stable.
- *
- * So write it again.
- */
- I915_WRITE(DPLL(pipe), dpll);
-}
+ I915_WRITE(PIPECONF(pipe), pipeconf);
+ POSTING_READ(PIPECONF(pipe));
-static int i9xx_crtc_mode_set(struct drm_crtc *crtc,
- struct drm_display_mode *mode,
- struct drm_display_mode *adjusted_mode,
- int x, int y,
- struct drm_framebuffer *old_fb)
-{
- struct drm_device *dev = crtc->dev;
- struct drm_i915_private *dev_priv = dev->dev_private;
- struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
- int pipe = intel_crtc->pipe;
- int plane = intel_crtc->plane;
- int refclk, num_connectors = 0;
- intel_clock_t clock, reduced_clock;
- u32 dspcntr, pipeconf, vsyncshift;
- bool ok, has_reduced_clock = false, is_sdvo = false;
- bool is_lvds = false, is_tv = false, is_dp = false;
- struct drm_mode_config *mode_config = &dev->mode_config;
- struct intel_encoder *encoder;
- const intel_limit_t *limit;
- int ret;
+ intel_wait_for_vblank(dev, pipe);
- list_for_each_entry(encoder, &mode_config->encoder_list, base.head) {
- if (encoder->base.crtc != crtc)
- continue;
-
- switch (encoder->type) {
- case INTEL_OUTPUT_LVDS:
- is_lvds = true;
- break;
- case INTEL_OUTPUT_SDVO:
- case INTEL_OUTPUT_HDMI:
- is_sdvo = true;
- if (encoder->needs_tv_clock)
- is_tv = true;
- break;
- case INTEL_OUTPUT_TVOUT:
- is_tv = true;
- break;
- case INTEL_OUTPUT_DISPLAYPORT:
- is_dp = true;
- break;
- }
-
- num_connectors++;
- }
-
- refclk = i9xx_get_refclk(crtc, num_connectors);
-
- /*
- * Returns a set of divisors for the desired target clock with the given
- * refclk, or FALSE. The returned values represent the clock equation:
- * reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2.
- */
- limit = intel_limit(crtc, refclk);
- ok = limit->find_pll(limit, crtc, adjusted_mode->clock, refclk, NULL,
- &clock);
- if (!ok) {
- DRM_ERROR("Couldn't find PLL settings for mode!\n");
- return -EINVAL;
- }
-
- /* Ensure that the cursor is valid for the new mode before changing... */
- intel_crtc_update_cursor(crtc, true);
-
- if (is_lvds && dev_priv->lvds_downclock_avail) {
- /*
- * Ensure we match the reduced clock's P to the target clock.
- * If the clocks don't match, we can't switch the display clock
- * by using the FP0/FP1. In such case we will disable the LVDS
- * downclock feature.
- */
- has_reduced_clock = limit->find_pll(limit, crtc,
- dev_priv->lvds_downclock,
- refclk,
- &clock,
- &reduced_clock);
- }
-
- if (is_sdvo && is_tv)
- i9xx_adjust_sdvo_tv_clock(adjusted_mode, &clock);
-
- i9xx_update_pll_dividers(crtc, &clock, has_reduced_clock ?
- &reduced_clock : NULL);
-
- if (IS_GEN2(dev))
- i8xx_update_pll(crtc, adjusted_mode, &clock, num_connectors);
- else
- i9xx_update_pll(crtc, mode, adjusted_mode, &clock,
- has_reduced_clock ? &reduced_clock : NULL,
- num_connectors);
-
- /* setup pipeconf */
- pipeconf = I915_READ(PIPECONF(pipe));
-
- /* Set up the display plane register */
- dspcntr = DISPPLANE_GAMMA_ENABLE;
-
- if (pipe == 0)
- dspcntr &= ~DISPPLANE_SEL_PIPE_MASK;
- else
- dspcntr |= DISPPLANE_SEL_PIPE_B;
-
- if (pipe == 0 && INTEL_INFO(dev)->gen < 4) {
- /* Enable pixel doubling when the dot clock is > 90% of the (display)
- * core speed.
- *
- * XXX: No double-wide on 915GM pipe B. Is that the only reason for the
- * pipe == 0 check?
- */
- if (mode->clock >
- dev_priv->display.get_display_clock_speed(dev) * 9 / 10)
- pipeconf |= PIPECONF_DOUBLE_WIDE;
- else
- pipeconf &= ~PIPECONF_DOUBLE_WIDE;
- }
-
- /* default to 8bpc */
- pipeconf &= ~(PIPECONF_BPP_MASK | PIPECONF_DITHER_EN);
- if (is_dp) {
- if (mode->private_flags & INTEL_MODE_DP_FORCE_6BPC) {
- pipeconf |= PIPECONF_BPP_6 |
- PIPECONF_DITHER_EN |
- PIPECONF_DITHER_TYPE_SP;
- }
- }
-
- DRM_DEBUG_KMS("Mode for pipe %c:\n", pipe == 0 ? 'A' : 'B');
- drm_mode_debug_printmodeline(mode);
-
- if (HAS_PIPE_CXSR(dev)) {
- if (intel_crtc->lowfreq_avail) {
- DRM_DEBUG_KMS("enabling CxSR downclocking\n");
- pipeconf |= PIPECONF_CXSR_DOWNCLOCK;
- } else {
- DRM_DEBUG_KMS("disabling CxSR downclocking\n");
- pipeconf &= ~PIPECONF_CXSR_DOWNCLOCK;
- }
- }
-
- pipeconf &= ~PIPECONF_INTERLACE_MASK;
- if (!IS_GEN2(dev) &&
- adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE) {
- pipeconf |= PIPECONF_INTERLACE_W_FIELD_INDICATION;
- /* the chip adds 2 halflines automatically */
- adjusted_mode->crtc_vtotal -= 1;
- adjusted_mode->crtc_vblank_end -= 1;
- vsyncshift = adjusted_mode->crtc_hsync_start
- - adjusted_mode->crtc_htotal/2;
- } else {
- pipeconf |= PIPECONF_PROGRESSIVE;
- vsyncshift = 0;
- }
-
- if (!IS_GEN3(dev))
- I915_WRITE(VSYNCSHIFT(pipe), vsyncshift);
-
- I915_WRITE(HTOTAL(pipe),
- (adjusted_mode->crtc_hdisplay - 1) |
- ((adjusted_mode->crtc_htotal - 1) << 16));
- I915_WRITE(HBLANK(pipe),
- (adjusted_mode->crtc_hblank_start - 1) |
- ((adjusted_mode->crtc_hblank_end - 1) << 16));
- I915_WRITE(HSYNC(pipe),
- (adjusted_mode->crtc_hsync_start - 1) |
- ((adjusted_mode->crtc_hsync_end - 1) << 16));
-
- I915_WRITE(VTOTAL(pipe),
- (adjusted_mode->crtc_vdisplay - 1) |
- ((adjusted_mode->crtc_vtotal - 1) << 16));
- I915_WRITE(VBLANK(pipe),
- (adjusted_mode->crtc_vblank_start - 1) |
- ((adjusted_mode->crtc_vblank_end - 1) << 16));
- I915_WRITE(VSYNC(pipe),
- (adjusted_mode->crtc_vsync_start - 1) |
- ((adjusted_mode->crtc_vsync_end - 1) << 16));
-
- /* pipesrc and dspsize control the size that is scaled from,
- * which should always be the user's requested size.
- */
- I915_WRITE(DSPSIZE(plane),
- ((mode->vdisplay - 1) << 16) |
- (mode->hdisplay - 1));
- I915_WRITE(DSPPOS(plane), 0);
- I915_WRITE(PIPESRC(pipe),
- ((mode->hdisplay - 1) << 16) | (mode->vdisplay - 1));
-
- I915_WRITE(PIPECONF(pipe), pipeconf);
- POSTING_READ(PIPECONF(pipe));
- intel_enable_pipe(dev_priv, pipe, false);
-
- intel_wait_for_vblank(dev, pipe);
-
- I915_WRITE(DSPCNTR(plane), dspcntr);
- POSTING_READ(DSPCNTR(plane));
- intel_enable_plane(dev_priv, plane, pipe);
+ I915_WRITE(DSPCNTR(plane), dspcntr);
+ POSTING_READ(DSPCNTR(plane));
ret = intel_pipe_set_base(crtc, x, y, old_fb);
@@ -5795,3418 +4433,1901 @@ static int i9xx_crtc_mode_set(struct drm_crtc *crtc,
return ret;
}
-/*
- * Initialize reference clocks when the driver loads
- */
-void ironlake_init_pch_refclk(struct drm_device *dev)
+static int intel_crtc_mode_set(struct drm_crtc *crtc,
+ struct drm_display_mode *mode,
+ struct drm_display_mode *adjusted_mode,
+ int x, int y,
+ struct drm_framebuffer *old_fb)
{
- struct drm_i915_private *dev_priv = dev->dev_private;
- struct drm_mode_config *mode_config = &dev->mode_config;
- struct intel_encoder *encoder;
- u32 temp;
- bool has_lvds = false;
- bool has_cpu_edp = false;
- bool has_pch_edp = false;
- bool has_panel = false;
- bool has_ck505 = false;
- bool can_ssc = false;
-
- /* We need to take the global config into account */
- list_for_each_entry(encoder, &mode_config->encoder_list,
- base.head) {
- switch (encoder->type) {
- case INTEL_OUTPUT_LVDS:
- has_panel = true;
- has_lvds = true;
- break;
- case INTEL_OUTPUT_EDP:
- has_panel = true;
- if (intel_encoder_is_pch_edp(&encoder->base))
- has_pch_edp = true;
- else
- has_cpu_edp = true;
- break;
- }
- }
-
- if (HAS_PCH_IBX(dev)) {
- has_ck505 = dev_priv->display_clock_mode;
- can_ssc = has_ck505;
- } else {
- has_ck505 = false;
- can_ssc = true;
- }
-
- DRM_DEBUG_KMS("has_panel %d has_lvds %d has_pch_edp %d has_cpu_edp %d has_ck505 %d\n",
- has_panel, has_lvds, has_pch_edp, has_cpu_edp,
- has_ck505);
-
- /* Ironlake: try to setup display ref clock before DPLL
- * enabling. This is only under driver's control after
- * PCH B stepping, previous chipset stepping should be
- * ignoring this setting.
- */
- temp = I915_READ(PCH_DREF_CONTROL);
- /* Always enable nonspread source */
- temp &= ~DREF_NONSPREAD_SOURCE_MASK;
-
- if (has_ck505)
- temp |= DREF_NONSPREAD_CK505_ENABLE;
- else
- temp |= DREF_NONSPREAD_SOURCE_ENABLE;
-
- if (has_panel) {
- temp &= ~DREF_SSC_SOURCE_MASK;
- temp |= DREF_SSC_SOURCE_ENABLE;
-
- /* SSC must be turned on before enabling the CPU output */
- if (intel_panel_use_ssc(dev_priv) && can_ssc) {
- DRM_DEBUG_KMS("Using SSC on panel\n");
- temp |= DREF_SSC1_ENABLE;
- } else
- temp &= ~DREF_SSC1_ENABLE;
-
- /* Get SSC going before enabling the outputs */
- I915_WRITE(PCH_DREF_CONTROL, temp);
- POSTING_READ(PCH_DREF_CONTROL);
- udelay(200);
-
- temp &= ~DREF_CPU_SOURCE_OUTPUT_MASK;
-
- /* Enable CPU source on CPU attached eDP */
- if (has_cpu_edp) {
- if (intel_panel_use_ssc(dev_priv) && can_ssc) {
- DRM_DEBUG_KMS("Using SSC on eDP\n");
- temp |= DREF_CPU_SOURCE_OUTPUT_DOWNSPREAD;
- }
- else
- temp |= DREF_CPU_SOURCE_OUTPUT_NONSPREAD;
- } else
- temp |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
-
- I915_WRITE(PCH_DREF_CONTROL, temp);
- POSTING_READ(PCH_DREF_CONTROL);
- udelay(200);
- } else {
- DRM_DEBUG_KMS("Disabling SSC entirely\n");
-
- temp &= ~DREF_CPU_SOURCE_OUTPUT_MASK;
-
- /* Turn off CPU output */
- temp |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
-
- I915_WRITE(PCH_DREF_CONTROL, temp);
- POSTING_READ(PCH_DREF_CONTROL);
- udelay(200);
-
- /* Turn off the SSC source */
- temp &= ~DREF_SSC_SOURCE_MASK;
- temp |= DREF_SSC_SOURCE_DISABLE;
-
- /* Turn off SSC1 */
- temp &= ~ DREF_SSC1_ENABLE;
-
- I915_WRITE(PCH_DREF_CONTROL, temp);
- POSTING_READ(PCH_DREF_CONTROL);
- udelay(200);
- }
-}
-
-static int ironlake_get_refclk(struct drm_crtc *crtc)
-{
- struct drm_device *dev = crtc->dev;
- struct drm_i915_private *dev_priv = dev->dev_private;
- struct intel_encoder *encoder;
- struct drm_mode_config *mode_config = &dev->mode_config;
- struct intel_encoder *edp_encoder = NULL;
- int num_connectors = 0;
- bool is_lvds = false;
-
- list_for_each_entry(encoder, &mode_config->encoder_list, base.head) {
- if (encoder->base.crtc != crtc)
- continue;
-
- switch (encoder->type) {
- case INTEL_OUTPUT_LVDS:
- is_lvds = true;
- break;
- case INTEL_OUTPUT_EDP:
- edp_encoder = encoder;
- break;
- }
- num_connectors++;
- }
-
- if (is_lvds && intel_panel_use_ssc(dev_priv) && num_connectors < 2) {
- DRM_DEBUG_KMS("using SSC reference clock of %d MHz\n",
- dev_priv->lvds_ssc_freq);
- return dev_priv->lvds_ssc_freq * 1000;
- }
-
- return 120000;
-}
-
-static int ironlake_crtc_mode_set(struct drm_crtc *crtc,
- struct drm_display_mode *mode,
- struct drm_display_mode *adjusted_mode,
- int x, int y,
- struct drm_framebuffer *old_fb)
-{
- struct drm_device *dev = crtc->dev;
- struct drm_i915_private *dev_priv = dev->dev_private;
- struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
- int pipe = intel_crtc->pipe;
- int plane = intel_crtc->plane;
- int refclk, num_connectors = 0;
- intel_clock_t clock, reduced_clock;
- u32 dpll, fp = 0, fp2 = 0, dspcntr, pipeconf;
- bool ok, has_reduced_clock = false, is_sdvo = false;
- bool is_crt = false, is_lvds = false, is_tv = false, is_dp = false;
- struct drm_mode_config *mode_config = &dev->mode_config;
- struct intel_encoder *encoder, *edp_encoder = NULL;
- const intel_limit_t *limit;
- int ret;
- struct fdi_m_n m_n = {0};
- u32 temp;
- u32 lvds_sync = 0;
- int target_clock, pixel_multiplier, lane, link_bw, factor;
- unsigned int pipe_bpp;
- bool dither;
- bool is_cpu_edp = false, is_pch_edp = false;
-
- list_for_each_entry(encoder, &mode_config->encoder_list, base.head) {
- if (encoder->base.crtc != crtc)
- continue;
-
- switch (encoder->type) {
- case INTEL_OUTPUT_LVDS:
- is_lvds = true;
- break;
- case INTEL_OUTPUT_SDVO:
- case INTEL_OUTPUT_HDMI:
- is_sdvo = true;
- if (encoder->needs_tv_clock)
- is_tv = true;
- break;
- case INTEL_OUTPUT_TVOUT:
- is_tv = true;
- break;
- case INTEL_OUTPUT_ANALOG:
- is_crt = true;
- break;
- case INTEL_OUTPUT_DISPLAYPORT:
- is_dp = true;
- break;
- case INTEL_OUTPUT_EDP:
- is_dp = true;
- if (intel_encoder_is_pch_edp(&encoder->base))
- is_pch_edp = true;
- else
- is_cpu_edp = true;
- edp_encoder = encoder;
- break;
- }
-
- num_connectors++;
- }
-
- refclk = ironlake_get_refclk(crtc);
-
- /*
- * Returns a set of divisors for the desired target clock with the given
- * refclk, or FALSE. The returned values represent the clock equation:
- * reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2.
- */
- limit = intel_limit(crtc, refclk);
- ok = limit->find_pll(limit, crtc, adjusted_mode->clock, refclk, NULL,
- &clock);
- if (!ok) {
- DRM_ERROR("Couldn't find PLL settings for mode!\n");
- return -EINVAL;
- }
-
- /* Ensure that the cursor is valid for the new mode before changing... */
- intel_crtc_update_cursor(crtc, true);
-
- if (is_lvds && dev_priv->lvds_downclock_avail) {
- /*
- * Ensure we match the reduced clock's P to the target clock.
- * If the clocks don't match, we can't switch the display clock
- * by using the FP0/FP1. In such case we will disable the LVDS
- * downclock feature.
- */
- has_reduced_clock = limit->find_pll(limit, crtc,
- dev_priv->lvds_downclock,
- refclk,
- &clock,
- &reduced_clock);
- }
- /* SDVO TV has fixed PLL values depend on its clock range,
- this mirrors vbios setting. */
- if (is_sdvo && is_tv) {
- if (adjusted_mode->clock >= 100000
- && adjusted_mode->clock < 140500) {
- clock.p1 = 2;
- clock.p2 = 10;
- clock.n = 3;
- clock.m1 = 16;
- clock.m2 = 8;
- } else if (adjusted_mode->clock >= 140500
- && adjusted_mode->clock <= 200000) {
- clock.p1 = 1;
- clock.p2 = 10;
- clock.n = 6;
- clock.m1 = 12;
- clock.m2 = 8;
- }
- }
-
- /* FDI link */
- pixel_multiplier = intel_mode_get_pixel_multiplier(adjusted_mode);
- lane = 0;
- /* CPU eDP doesn't require FDI link, so just set DP M/N
- according to current link config */
- if (is_cpu_edp) {
- target_clock = mode->clock;
- intel_edp_link_config(edp_encoder, &lane, &link_bw);
- } else {
- /* [e]DP over FDI requires target mode clock
- instead of link clock */
- if (is_dp)
- target_clock = mode->clock;
- else
- target_clock = adjusted_mode->clock;
-
- /* FDI is a binary signal running at ~2.7GHz, encoding
- * each output octet as 10 bits. The actual frequency
- * is stored as a divider into a 100MHz clock, and the
- * mode pixel clock is stored in units of 1KHz.
- * Hence the bw of each lane in terms of the mode signal
- * is:
- */
- link_bw = intel_fdi_link_freq(dev) * MHz(100)/KHz(1)/10;
- }
-
- /* determine panel color depth */
- temp = I915_READ(PIPECONF(pipe));
- temp &= ~PIPE_BPC_MASK;
- dither = intel_choose_pipe_bpp_dither(crtc, &pipe_bpp, mode);
- switch (pipe_bpp) {
- case 18:
- temp |= PIPE_6BPC;
- break;
- case 24:
- temp |= PIPE_8BPC;
- break;
- case 30:
- temp |= PIPE_10BPC;
- break;
- case 36:
- temp |= PIPE_12BPC;
- break;
- default:
- WARN(1, "intel_choose_pipe_bpp returned invalid value %d\n",
- pipe_bpp);
- temp |= PIPE_8BPC;
- pipe_bpp = 24;
- break;
- }
-
- intel_crtc->bpp = pipe_bpp;
- I915_WRITE(PIPECONF(pipe), temp);
-
- if (!lane) {
- /*
- * Account for spread spectrum to avoid
- * oversubscribing the link. Max center spread
- * is 2.5%; use 5% for safety's sake.
- */
- u32 bps = target_clock * intel_crtc->bpp * 21 / 20;
- lane = bps / (link_bw * 8) + 1;
- }
-
- intel_crtc->fdi_lanes = lane;
-
- if (pixel_multiplier > 1)
- link_bw *= pixel_multiplier;
- ironlake_compute_m_n(intel_crtc->bpp, lane, target_clock, link_bw,
- &m_n);
-
- fp = clock.n << 16 | clock.m1 << 8 | clock.m2;
- if (has_reduced_clock)
- fp2 = reduced_clock.n << 16 | reduced_clock.m1 << 8 |
- reduced_clock.m2;
-
- /* Enable autotuning of the PLL clock (if permissible) */
- factor = 21;
- if (is_lvds) {
- if ((intel_panel_use_ssc(dev_priv) &&
- dev_priv->lvds_ssc_freq == 100) ||
- (I915_READ(PCH_LVDS) & LVDS_CLKB_POWER_MASK) == LVDS_CLKB_POWER_UP)
- factor = 25;
- } else if (is_sdvo && is_tv)
- factor = 20;
-
- if (clock.m < factor * clock.n)
- fp |= FP_CB_TUNE;
-
- dpll = 0;
-
- if (is_lvds)
- dpll |= DPLLB_MODE_LVDS;
- else
- dpll |= DPLLB_MODE_DAC_SERIAL;
- if (is_sdvo) {
- int pixel_multiplier = intel_mode_get_pixel_multiplier(adjusted_mode);
- if (pixel_multiplier > 1) {
- dpll |= (pixel_multiplier - 1) << PLL_REF_SDVO_HDMI_MULTIPLIER_SHIFT;
- }
- dpll |= DPLL_DVO_HIGH_SPEED;
- }
- if (is_dp && !is_cpu_edp)
- dpll |= DPLL_DVO_HIGH_SPEED;
-
- /* compute bitmask from p1 value */
- dpll |= (1 << (clock.p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
- /* also FPA1 */
- dpll |= (1 << (clock.p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT;
-
- switch (clock.p2) {
- case 5:
- dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_5;
- break;
- case 7:
- dpll |= DPLLB_LVDS_P2_CLOCK_DIV_7;
- break;
- case 10:
- dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_10;
- break;
- case 14:
- dpll |= DPLLB_LVDS_P2_CLOCK_DIV_14;
- break;
- }
-
- if (is_sdvo && is_tv)
- dpll |= PLL_REF_INPUT_TVCLKINBC;
- else if (is_tv)
- /* XXX: just matching BIOS for now */
- /* dpll |= PLL_REF_INPUT_TVCLKINBC; */
- dpll |= 3;
- else if (is_lvds && intel_panel_use_ssc(dev_priv) && num_connectors < 2)
- dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
- else
- dpll |= PLL_REF_INPUT_DREFCLK;
-
- /* setup pipeconf */
- pipeconf = I915_READ(PIPECONF(pipe));
-
- /* Set up the display plane register */
- dspcntr = DISPPLANE_GAMMA_ENABLE;
-
- DRM_DEBUG_KMS("Mode for pipe %d:\n", pipe);
- drm_mode_debug_printmodeline(mode);
-
- /* PCH eDP needs FDI, but CPU eDP does not */
- if (!intel_crtc->no_pll) {
- if (!is_cpu_edp) {
- I915_WRITE(PCH_FP0(pipe), fp);
- I915_WRITE(PCH_DPLL(pipe), dpll & ~DPLL_VCO_ENABLE);
-
- POSTING_READ(PCH_DPLL(pipe));
- udelay(150);
- }
- } else {
- if (dpll == (I915_READ(PCH_DPLL(0)) & 0x7fffffff) &&
- fp == I915_READ(PCH_FP0(0))) {
- intel_crtc->use_pll_a = true;
- DRM_DEBUG_KMS("using pipe a dpll\n");
- } else if (dpll == (I915_READ(PCH_DPLL(1)) & 0x7fffffff) &&
- fp == I915_READ(PCH_FP0(1))) {
- intel_crtc->use_pll_a = false;
- DRM_DEBUG_KMS("using pipe b dpll\n");
- } else {
- DRM_DEBUG_KMS("no matching PLL configuration for pipe 2\n");
- return -EINVAL;
- }
- }
-
- /* The LVDS pin pair needs to be on before the DPLLs are enabled.
- * This is an exception to the general rule that mode_set doesn't turn
- * things on.
- */
- if (is_lvds) {
- temp = I915_READ(PCH_LVDS);
- temp |= LVDS_PORT_EN | LVDS_A0A2_CLKA_POWER_UP;
- if (HAS_PCH_CPT(dev)) {
- temp &= ~PORT_TRANS_SEL_MASK;
- temp |= PORT_TRANS_SEL_CPT(pipe);
- } else {
- if (pipe == 1)
- temp |= LVDS_PIPEB_SELECT;
- else
- temp &= ~LVDS_PIPEB_SELECT;
- }
-
- /* set the corresponsding LVDS_BORDER bit */
- temp |= dev_priv->lvds_border_bits;
- /* Set the B0-B3 data pairs corresponding to whether we're going to
- * set the DPLLs for dual-channel mode or not.
- */
- if (clock.p2 == 7)
- temp |= LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP;
- else
- temp &= ~(LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP);
-
- /* It would be nice to set 24 vs 18-bit mode (LVDS_A3_POWER_UP)
- * appropriately here, but we need to look more thoroughly into how
- * panels behave in the two modes.
- */
- if (adjusted_mode->flags & DRM_MODE_FLAG_NHSYNC)
- lvds_sync |= LVDS_HSYNC_POLARITY;
- if (adjusted_mode->flags & DRM_MODE_FLAG_NVSYNC)
- lvds_sync |= LVDS_VSYNC_POLARITY;
- if ((temp & (LVDS_HSYNC_POLARITY | LVDS_VSYNC_POLARITY))
- != lvds_sync) {
- char flags[2] = "-+";
- DRM_INFO("Changing LVDS panel from "
- "(%chsync, %cvsync) to (%chsync, %cvsync)\n",
- flags[!(temp & LVDS_HSYNC_POLARITY)],
- flags[!(temp & LVDS_VSYNC_POLARITY)],
- flags[!(lvds_sync & LVDS_HSYNC_POLARITY)],
- flags[!(lvds_sync & LVDS_VSYNC_POLARITY)]);
- temp &= ~(LVDS_HSYNC_POLARITY | LVDS_VSYNC_POLARITY);
- temp |= lvds_sync;
- }
- I915_WRITE(PCH_LVDS, temp);
- }
-
- pipeconf &= ~PIPECONF_DITHER_EN;
- pipeconf &= ~PIPECONF_DITHER_TYPE_MASK;
- if ((is_lvds && dev_priv->lvds_dither) || dither) {
- pipeconf |= PIPECONF_DITHER_EN;
- pipeconf |= PIPECONF_DITHER_TYPE_SP;
- }
- if (is_dp && !is_cpu_edp) {
- intel_dp_set_m_n(crtc, mode, adjusted_mode);
- } else {
- /* For non-DP output, clear any trans DP clock recovery setting.*/
- I915_WRITE(TRANSDATA_M1(pipe), 0);
- I915_WRITE(TRANSDATA_N1(pipe), 0);
- I915_WRITE(TRANSDPLINK_M1(pipe), 0);
- I915_WRITE(TRANSDPLINK_N1(pipe), 0);
- }
-
- if (!intel_crtc->no_pll && (!edp_encoder || is_pch_edp)) {
- I915_WRITE(PCH_DPLL(pipe), dpll);
-
- /* Wait for the clocks to stabilize. */
- POSTING_READ(PCH_DPLL(pipe));
- udelay(150);
-
- /* The pixel multiplier can only be updated once the
- * DPLL is enabled and the clocks are stable.
- *
- * So write it again.
- */
- I915_WRITE(PCH_DPLL(pipe), dpll);
- }
-
- intel_crtc->lowfreq_avail = false;
- if (!intel_crtc->no_pll) {
- if (is_lvds && has_reduced_clock && i915_powersave) {
- I915_WRITE(PCH_FP1(pipe), fp2);
- intel_crtc->lowfreq_avail = true;
- if (HAS_PIPE_CXSR(dev)) {
- DRM_DEBUG_KMS("enabling CxSR downclocking\n");
- pipeconf |= PIPECONF_CXSR_DOWNCLOCK;
- }
- } else {
- I915_WRITE(PCH_FP1(pipe), fp);
- if (HAS_PIPE_CXSR(dev)) {
- DRM_DEBUG_KMS("disabling CxSR downclocking\n");
- pipeconf &= ~PIPECONF_CXSR_DOWNCLOCK;
- }
- }
- }
-
- pipeconf &= ~PIPECONF_INTERLACE_MASK;
- if (adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE) {
- pipeconf |= PIPECONF_INTERLACED_ILK;
- /* the chip adds 2 halflines automatically */
- adjusted_mode->crtc_vtotal -= 1;
- adjusted_mode->crtc_vblank_end -= 1;
- I915_WRITE(VSYNCSHIFT(pipe),
- adjusted_mode->crtc_hsync_start
- - adjusted_mode->crtc_htotal/2);
- } else {
- pipeconf |= PIPECONF_PROGRESSIVE;
- I915_WRITE(VSYNCSHIFT(pipe), 0);
- }
-
- I915_WRITE(HTOTAL(pipe),
- (adjusted_mode->crtc_hdisplay - 1) |
- ((adjusted_mode->crtc_htotal - 1) << 16));
- I915_WRITE(HBLANK(pipe),
- (adjusted_mode->crtc_hblank_start - 1) |
- ((adjusted_mode->crtc_hblank_end - 1) << 16));
- I915_WRITE(HSYNC(pipe),
- (adjusted_mode->crtc_hsync_start - 1) |
- ((adjusted_mode->crtc_hsync_end - 1) << 16));
-
- I915_WRITE(VTOTAL(pipe),
- (adjusted_mode->crtc_vdisplay - 1) |
- ((adjusted_mode->crtc_vtotal - 1) << 16));
- I915_WRITE(VBLANK(pipe),
- (adjusted_mode->crtc_vblank_start - 1) |
- ((adjusted_mode->crtc_vblank_end - 1) << 16));
- I915_WRITE(VSYNC(pipe),
- (adjusted_mode->crtc_vsync_start - 1) |
- ((adjusted_mode->crtc_vsync_end - 1) << 16));
-
- /* pipesrc controls the size that is scaled from, which should
- * always be the user's requested size.
- */
- I915_WRITE(PIPESRC(pipe),
- ((mode->hdisplay - 1) << 16) | (mode->vdisplay - 1));
-
- I915_WRITE(PIPE_DATA_M1(pipe), TU_SIZE(m_n.tu) | m_n.gmch_m);
- I915_WRITE(PIPE_DATA_N1(pipe), m_n.gmch_n);
- I915_WRITE(PIPE_LINK_M1(pipe), m_n.link_m);
- I915_WRITE(PIPE_LINK_N1(pipe), m_n.link_n);
-
- if (is_cpu_edp)
- ironlake_set_pll_edp(crtc, adjusted_mode->clock);
-
- I915_WRITE(PIPECONF(pipe), pipeconf);
- POSTING_READ(PIPECONF(pipe));
-
- intel_wait_for_vblank(dev, pipe);
-
- I915_WRITE(DSPCNTR(plane), dspcntr);
- POSTING_READ(DSPCNTR(plane));
-
- ret = intel_pipe_set_base(crtc, x, y, old_fb);
-
- intel_update_watermarks(dev);
-
- return ret;
-}
-
-static int intel_crtc_mode_set(struct drm_crtc *crtc,
- struct drm_display_mode *mode,
- struct drm_display_mode *adjusted_mode,
- int x, int y,
- struct drm_framebuffer *old_fb)
-{
- struct drm_device *dev = crtc->dev;
- struct drm_i915_private *dev_priv = dev->dev_private;
- struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
- int pipe = intel_crtc->pipe;
- int ret;
-
- drm_vblank_pre_modeset(dev, pipe);
-
- ret = dev_priv->display.crtc_mode_set(crtc, mode, adjusted_mode,
- x, y, old_fb);
- drm_vblank_post_modeset(dev, pipe);
-
- if (ret)
- intel_crtc->dpms_mode = DRM_MODE_DPMS_OFF;
- else
- intel_crtc->dpms_mode = DRM_MODE_DPMS_ON;
-
- return ret;
-}
-
-static bool intel_eld_uptodate(struct drm_connector *connector,
- int reg_eldv, uint32_t bits_eldv,
- int reg_elda, uint32_t bits_elda,
- int reg_edid)
-{
- struct drm_i915_private *dev_priv = connector->dev->dev_private;
- uint8_t *eld = connector->eld;
- uint32_t i;
-
- i = I915_READ(reg_eldv);
- i &= bits_eldv;
-
- if (!eld[0])
- return !i;
-
- if (!i)
- return false;
-
- i = I915_READ(reg_elda);
- i &= ~bits_elda;
- I915_WRITE(reg_elda, i);
-
- for (i = 0; i < eld[2]; i++)
- if (I915_READ(reg_edid) != *((uint32_t *)eld + i))
- return false;
-
- return true;
-}
-
-static void g4x_write_eld(struct drm_connector *connector,
- struct drm_crtc *crtc)
-{
- struct drm_i915_private *dev_priv = connector->dev->dev_private;
- uint8_t *eld = connector->eld;
- uint32_t eldv;
- uint32_t len;
- uint32_t i;
-
- i = I915_READ(G4X_AUD_VID_DID);
-
- if (i == INTEL_AUDIO_DEVBLC || i == INTEL_AUDIO_DEVCL)
- eldv = G4X_ELDV_DEVCL_DEVBLC;
- else
- eldv = G4X_ELDV_DEVCTG;
-
- if (intel_eld_uptodate(connector,
- G4X_AUD_CNTL_ST, eldv,
- G4X_AUD_CNTL_ST, G4X_ELD_ADDR,
- G4X_HDMIW_HDMIEDID))
- return;
-
- i = I915_READ(G4X_AUD_CNTL_ST);
- i &= ~(eldv | G4X_ELD_ADDR);
- len = (i >> 9) & 0x1f; /* ELD buffer size */
- I915_WRITE(G4X_AUD_CNTL_ST, i);
-
- if (!eld[0])
- return;
-
- len = min_t(uint8_t, eld[2], len);
- DRM_DEBUG_DRIVER("ELD size %d\n", len);
- for (i = 0; i < len; i++)
- I915_WRITE(G4X_HDMIW_HDMIEDID, *((uint32_t *)eld + i));
-
- i = I915_READ(G4X_AUD_CNTL_ST);
- i |= eldv;
- I915_WRITE(G4X_AUD_CNTL_ST, i);
-}
-
-static void ironlake_write_eld(struct drm_connector *connector,
- struct drm_crtc *crtc)
-{
- struct drm_i915_private *dev_priv = connector->dev->dev_private;
- uint8_t *eld = connector->eld;
- uint32_t eldv;
- uint32_t i;
- int len;
- int hdmiw_hdmiedid;
- int aud_config;
- int aud_cntl_st;
- int aud_cntrl_st2;
-
- if (HAS_PCH_IBX(connector->dev)) {
- hdmiw_hdmiedid = IBX_HDMIW_HDMIEDID_A;
- aud_config = IBX_AUD_CONFIG_A;
- aud_cntl_st = IBX_AUD_CNTL_ST_A;
- aud_cntrl_st2 = IBX_AUD_CNTL_ST2;
- } else {
- hdmiw_hdmiedid = CPT_HDMIW_HDMIEDID_A;
- aud_config = CPT_AUD_CONFIG_A;
- aud_cntl_st = CPT_AUD_CNTL_ST_A;
- aud_cntrl_st2 = CPT_AUD_CNTRL_ST2;
- }
-
- i = to_intel_crtc(crtc)->pipe;
- hdmiw_hdmiedid += i * 0x100;
- aud_cntl_st += i * 0x100;
- aud_config += i * 0x100;
-
- DRM_DEBUG_DRIVER("ELD on pipe %c\n", pipe_name(i));
-
- i = I915_READ(aud_cntl_st);
- i = (i >> 29) & 0x3; /* DIP_Port_Select, 0x1 = PortB */
- if (!i) {
- DRM_DEBUG_DRIVER("Audio directed to unknown port\n");
- /* operate blindly on all ports */
- eldv = IBX_ELD_VALIDB;
- eldv |= IBX_ELD_VALIDB << 4;
- eldv |= IBX_ELD_VALIDB << 8;
- } else {
- DRM_DEBUG_DRIVER("ELD on port %c\n", 'A' + i);
- eldv = IBX_ELD_VALIDB << ((i - 1) * 4);
- }
-
- if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT)) {
- DRM_DEBUG_DRIVER("ELD: DisplayPort detected\n");
- eld[5] |= (1 << 2); /* Conn_Type, 0x1 = DisplayPort */
- I915_WRITE(aud_config, AUD_CONFIG_N_VALUE_INDEX); /* 0x1 = DP */
- } else
- I915_WRITE(aud_config, 0);
-
- if (intel_eld_uptodate(connector,
- aud_cntrl_st2, eldv,
- aud_cntl_st, IBX_ELD_ADDRESS,
- hdmiw_hdmiedid))
- return;
-
- i = I915_READ(aud_cntrl_st2);
- i &= ~eldv;
- I915_WRITE(aud_cntrl_st2, i);
-
- if (!eld[0])
- return;
-
- i = I915_READ(aud_cntl_st);
- i &= ~IBX_ELD_ADDRESS;
- I915_WRITE(aud_cntl_st, i);
-
- len = min_t(uint8_t, eld[2], 21); /* 84 bytes of hw ELD buffer */
- DRM_DEBUG_DRIVER("ELD size %d\n", len);
- for (i = 0; i < len; i++)
- I915_WRITE(hdmiw_hdmiedid, *((uint32_t *)eld + i));
-
- i = I915_READ(aud_cntrl_st2);
- i |= eldv;
- I915_WRITE(aud_cntrl_st2, i);
-}
-
-void intel_write_eld(struct drm_encoder *encoder,
- struct drm_display_mode *mode)
-{
- struct drm_crtc *crtc = encoder->crtc;
- struct drm_connector *connector;
- struct drm_device *dev = encoder->dev;
- struct drm_i915_private *dev_priv = dev->dev_private;
-
- connector = drm_select_eld(encoder, mode);
- if (!connector)
- return;
-
- DRM_DEBUG_DRIVER("ELD on [CONNECTOR:%d:%s], [ENCODER:%d:%s]\n",
- connector->base.id,
- drm_get_connector_name(connector),
- connector->encoder->base.id,
- drm_get_encoder_name(connector->encoder));
-
- connector->eld[6] = drm_av_sync_delay(connector, mode) / 2;
-
- if (dev_priv->display.write_eld)
- dev_priv->display.write_eld(connector, crtc);
-}
-
-/** Loads the palette/gamma unit for the CRTC with the prepared values */
-void intel_crtc_load_lut(struct drm_crtc *crtc)
-{
- struct drm_device *dev = crtc->dev;
- struct drm_i915_private *dev_priv = dev->dev_private;
- struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
- int palreg = PALETTE(intel_crtc->pipe);
- int i;
-
- /* The clocks have to be on to load the palette. */
- if (!crtc->enabled || !intel_crtc->active)
- return;
-
- /* use legacy palette for Ironlake */
- if (HAS_PCH_SPLIT(dev))
- palreg = LGC_PALETTE(intel_crtc->pipe);
-
- for (i = 0; i < 256; i++) {
- I915_WRITE(palreg + 4 * i,
- (intel_crtc->lut_r[i] << 16) |
- (intel_crtc->lut_g[i] << 8) |
- intel_crtc->lut_b[i]);
- }
-}
-
-static void i845_update_cursor(struct drm_crtc *crtc, u32 base)
-{
- struct drm_device *dev = crtc->dev;
- struct drm_i915_private *dev_priv = dev->dev_private;
- struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
- bool visible = base != 0;
- u32 cntl;
-
- if (intel_crtc->cursor_visible == visible)
- return;
-
- cntl = I915_READ(_CURACNTR);
- if (visible) {
- /* On these chipsets we can only modify the base whilst
- * the cursor is disabled.
- */
- I915_WRITE(_CURABASE, base);
-
- cntl &= ~(CURSOR_FORMAT_MASK);
- /* XXX width must be 64, stride 256 => 0x00 << 28 */
- cntl |= CURSOR_ENABLE |
- CURSOR_GAMMA_ENABLE |
- CURSOR_FORMAT_ARGB;
- } else
- cntl &= ~(CURSOR_ENABLE | CURSOR_GAMMA_ENABLE);
- I915_WRITE(_CURACNTR, cntl);
-
- intel_crtc->cursor_visible = visible;
-}
-
-static void i9xx_update_cursor(struct drm_crtc *crtc, u32 base)
-{
- struct drm_device *dev = crtc->dev;
- struct drm_i915_private *dev_priv = dev->dev_private;
- struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
- int pipe = intel_crtc->pipe;
- bool visible = base != 0;
-
- if (intel_crtc->cursor_visible != visible) {
- uint32_t cntl = I915_READ(CURCNTR(pipe));
- if (base) {
- cntl &= ~(CURSOR_MODE | MCURSOR_PIPE_SELECT);
- cntl |= CURSOR_MODE_64_ARGB_AX | MCURSOR_GAMMA_ENABLE;
- cntl |= pipe << 28; /* Connect to correct pipe */
- } else {
- cntl &= ~(CURSOR_MODE | MCURSOR_GAMMA_ENABLE);
- cntl |= CURSOR_MODE_DISABLE;
- }
- I915_WRITE(CURCNTR(pipe), cntl);
-
- intel_crtc->cursor_visible = visible;
- }
- /* and commit changes on next vblank */
- I915_WRITE(CURBASE(pipe), base);
-}
-
-static void ivb_update_cursor(struct drm_crtc *crtc, u32 base)
-{
- struct drm_device *dev = crtc->dev;
- struct drm_i915_private *dev_priv = dev->dev_private;
- struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
- int pipe = intel_crtc->pipe;
- bool visible = base != 0;
-
- if (intel_crtc->cursor_visible != visible) {
- uint32_t cntl = I915_READ(CURCNTR_IVB(pipe));
- if (base) {
- cntl &= ~CURSOR_MODE;
- cntl |= CURSOR_MODE_64_ARGB_AX | MCURSOR_GAMMA_ENABLE;
- } else {
- cntl &= ~(CURSOR_MODE | MCURSOR_GAMMA_ENABLE);
- cntl |= CURSOR_MODE_DISABLE;
- }
- I915_WRITE(CURCNTR_IVB(pipe), cntl);
-
- intel_crtc->cursor_visible = visible;
- }
- /* and commit changes on next vblank */
- I915_WRITE(CURBASE_IVB(pipe), base);
-}
-
-/* If no-part of the cursor is visible on the framebuffer, then the GPU may hang... */
-static void intel_crtc_update_cursor(struct drm_crtc *crtc,
- bool on)
-{
- struct drm_device *dev = crtc->dev;
- struct drm_i915_private *dev_priv = dev->dev_private;
- struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
- int pipe = intel_crtc->pipe;
- int x = intel_crtc->cursor_x;
- int y = intel_crtc->cursor_y;
- u32 base, pos;
- bool visible;
-
- pos = 0;
-
- if (on && crtc->enabled && crtc->fb) {
- base = intel_crtc->cursor_addr;
- if (x > (int) crtc->fb->width)
- base = 0;
-
- if (y > (int) crtc->fb->height)
- base = 0;
- } else
- base = 0;
-
- if (x < 0) {
- if (x + intel_crtc->cursor_width < 0)
- base = 0;
-
- pos |= CURSOR_POS_SIGN << CURSOR_X_SHIFT;
- x = -x;
- }
- pos |= x << CURSOR_X_SHIFT;
-
- if (y < 0) {
- if (y + intel_crtc->cursor_height < 0)
- base = 0;
-
- pos |= CURSOR_POS_SIGN << CURSOR_Y_SHIFT;
- y = -y;
- }
- pos |= y << CURSOR_Y_SHIFT;
-
- visible = base != 0;
- if (!visible && !intel_crtc->cursor_visible)
- return;
-
- if (IS_IVYBRIDGE(dev)) {
- I915_WRITE(CURPOS_IVB(pipe), pos);
- ivb_update_cursor(crtc, base);
- } else {
- I915_WRITE(CURPOS(pipe), pos);
- if (IS_845G(dev) || IS_I865G(dev))
- i845_update_cursor(crtc, base);
- else
- i9xx_update_cursor(crtc, base);
- }
-
- if (visible)
- intel_mark_busy(dev, to_intel_framebuffer(crtc->fb)->obj);
-}
-
-static int intel_crtc_cursor_set(struct drm_crtc *crtc,
- struct drm_file *file,
- uint32_t handle,
- uint32_t width, uint32_t height)
-{
- struct drm_device *dev = crtc->dev;
- struct drm_i915_private *dev_priv = dev->dev_private;
- struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
- struct drm_i915_gem_object *obj;
- uint32_t addr;
- int ret;
-
- DRM_DEBUG_KMS("\n");
-
- /* if we want to turn off the cursor ignore width and height */
- if (!handle) {
- DRM_DEBUG_KMS("cursor off\n");
- addr = 0;
- obj = NULL;
- mutex_lock(&dev->struct_mutex);
- goto finish;
- }
-
- /* Currently we only support 64x64 cursors */
- if (width != 64 || height != 64) {
- DRM_ERROR("we currently only support 64x64 cursors\n");
- return -EINVAL;
- }
-
- obj = to_intel_bo(drm_gem_object_lookup(dev, file, handle));
- if (&obj->base == NULL)
- return -ENOENT;
-
- if (obj->base.size < width * height * 4) {
- DRM_ERROR("buffer is to small\n");
- ret = -ENOMEM;
- goto fail;
- }
-
- /* we only need to pin inside GTT if cursor is non-phy */
- mutex_lock(&dev->struct_mutex);
- if (!dev_priv->info->cursor_needs_physical) {
- if (obj->tiling_mode) {
- DRM_ERROR("cursor cannot be tiled\n");
- ret = -EINVAL;
- goto fail_locked;
- }
-
- ret = i915_gem_object_pin_to_display_plane(obj, 0, NULL);
- if (ret) {
- DRM_ERROR("failed to move cursor bo into the GTT\n");
- goto fail_locked;
- }
-
- ret = i915_gem_object_put_fence(obj);
- if (ret) {
- DRM_ERROR("failed to release fence for cursor");
- goto fail_unpin;
- }
-
- addr = obj->gtt_offset;
- } else {
- int align = IS_I830(dev) ? 16 * 1024 : 256;
- ret = i915_gem_attach_phys_object(dev, obj,
- (intel_crtc->pipe == 0) ? I915_GEM_PHYS_CURSOR_0 : I915_GEM_PHYS_CURSOR_1,
- align);
- if (ret) {
- DRM_ERROR("failed to attach phys object\n");
- goto fail_locked;
- }
- addr = obj->phys_obj->handle->busaddr;
- }
-
- if (IS_GEN2(dev))
- I915_WRITE(CURSIZE, (height << 12) | width);
-
- finish:
- if (intel_crtc->cursor_bo) {
- if (dev_priv->info->cursor_needs_physical) {
- if (intel_crtc->cursor_bo != obj)
- i915_gem_detach_phys_object(dev, intel_crtc->cursor_bo);
- } else
- i915_gem_object_unpin(intel_crtc->cursor_bo);
- drm_gem_object_unreference(&intel_crtc->cursor_bo->base);
- }
-
- mutex_unlock(&dev->struct_mutex);
-
- intel_crtc->cursor_addr = addr;
- intel_crtc->cursor_bo = obj;
- intel_crtc->cursor_width = width;
- intel_crtc->cursor_height = height;
-
- intel_crtc_update_cursor(crtc, true);
-
- return 0;
-fail_unpin:
- i915_gem_object_unpin(obj);
-fail_locked:
- mutex_unlock(&dev->struct_mutex);
-fail:
- drm_gem_object_unreference_unlocked(&obj->base);
- return ret;
-}
-
-static int intel_crtc_cursor_move(struct drm_crtc *crtc, int x, int y)
-{
- struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
-
- intel_crtc->cursor_x = x;
- intel_crtc->cursor_y = y;
-
- intel_crtc_update_cursor(crtc, true);
-
- return 0;
-}
-
-/** Sets the color ramps on behalf of RandR */
-void intel_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
- u16 blue, int regno)
-{
- struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
-
- intel_crtc->lut_r[regno] = red >> 8;
- intel_crtc->lut_g[regno] = green >> 8;
- intel_crtc->lut_b[regno] = blue >> 8;
-}
-
-void intel_crtc_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
- u16 *blue, int regno)
-{
- struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
-
- *red = intel_crtc->lut_r[regno] << 8;
- *green = intel_crtc->lut_g[regno] << 8;
- *blue = intel_crtc->lut_b[regno] << 8;
-}
-
-static void intel_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green,
- u16 *blue, uint32_t start, uint32_t size)
-{
- int end = (start + size > 256) ? 256 : start + size, i;
- struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
-
- for (i = start; i < end; i++) {
- intel_crtc->lut_r[i] = red[i] >> 8;
- intel_crtc->lut_g[i] = green[i] >> 8;
- intel_crtc->lut_b[i] = blue[i] >> 8;
- }
-
- intel_crtc_load_lut(crtc);
-}
-
-/**
- * Get a pipe with a simple mode set on it for doing load-based monitor
- * detection.
- *
- * It will be up to the load-detect code to adjust the pipe as appropriate for
- * its requirements. The pipe will be connected to no other encoders.
- *
- * Currently this code will only succeed if there is a pipe with no encoders
- * configured for it. In the future, it could choose to temporarily disable
- * some outputs to free up a pipe for its use.
- *
- * \return crtc, or NULL if no pipes are available.
- */
-
-/* VESA 640x480x72Hz mode to set on the pipe */
-static struct drm_display_mode load_detect_mode = {
- DRM_MODE("640x480", DRM_MODE_TYPE_DEFAULT, 31500, 640, 664,
- 704, 832, 0, 480, 489, 491, 520, 0, DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
-};
-
-static struct drm_framebuffer *
-intel_framebuffer_create(struct drm_device *dev,
- struct drm_mode_fb_cmd2 *mode_cmd,
- struct drm_i915_gem_object *obj)
-{
- struct intel_framebuffer *intel_fb;
- int ret;
-
- intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
- if (!intel_fb) {
- drm_gem_object_unreference_unlocked(&obj->base);
- return ERR_PTR(-ENOMEM);
- }
-
- ret = intel_framebuffer_init(dev, intel_fb, mode_cmd, obj);
- if (ret) {
- drm_gem_object_unreference_unlocked(&obj->base);
- kfree(intel_fb);
- return ERR_PTR(ret);
- }
-
- return &intel_fb->base;
-}
-
-static u32
-intel_framebuffer_pitch_for_width(int width, int bpp)
-{
- u32 pitch = DIV_ROUND_UP(width * bpp, 8);
- return ALIGN(pitch, 64);
-}
-
-static u32
-intel_framebuffer_size_for_mode(struct drm_display_mode *mode, int bpp)
-{
- u32 pitch = intel_framebuffer_pitch_for_width(mode->hdisplay, bpp);
- return ALIGN(pitch * mode->vdisplay, PAGE_SIZE);
-}
-
-static struct drm_framebuffer *
-intel_framebuffer_create_for_mode(struct drm_device *dev,
- struct drm_display_mode *mode,
- int depth, int bpp)
-{
- struct drm_i915_gem_object *obj;
- struct drm_mode_fb_cmd2 mode_cmd;
-
- obj = i915_gem_alloc_object(dev,
- intel_framebuffer_size_for_mode(mode, bpp));
- if (obj == NULL)
- return ERR_PTR(-ENOMEM);
-
- mode_cmd.width = mode->hdisplay;
- mode_cmd.height = mode->vdisplay;
- mode_cmd.pitches[0] = intel_framebuffer_pitch_for_width(mode_cmd.width,
- bpp);
- mode_cmd.pixel_format = drm_mode_legacy_fb_format(bpp, depth);
-
- return intel_framebuffer_create(dev, &mode_cmd, obj);
-}
-
-static struct drm_framebuffer *
-mode_fits_in_fbdev(struct drm_device *dev,
- struct drm_display_mode *mode)
-{
- struct drm_i915_private *dev_priv = dev->dev_private;
- struct drm_i915_gem_object *obj;
- struct drm_framebuffer *fb;
-
- if (dev_priv->fbdev == NULL)
- return NULL;
-
- obj = dev_priv->fbdev->ifb.obj;
- if (obj == NULL)
- return NULL;
-
- fb = &dev_priv->fbdev->ifb.base;
- if (fb->pitches[0] < intel_framebuffer_pitch_for_width(mode->hdisplay,
- fb->bits_per_pixel))
- return NULL;
-
- if (obj->base.size < mode->vdisplay * fb->pitches[0])
- return NULL;
-
- return fb;
-}
-
-bool intel_get_load_detect_pipe(struct intel_encoder *intel_encoder,
- struct drm_connector *connector,
- struct drm_display_mode *mode,
- struct intel_load_detect_pipe *old)
-{
- struct intel_crtc *intel_crtc;
- struct drm_crtc *possible_crtc;
- struct drm_encoder *encoder = &intel_encoder->base;
- struct drm_crtc *crtc = NULL;
- struct drm_device *dev = encoder->dev;
- struct drm_framebuffer *old_fb;
- int i = -1;
-
- DRM_DEBUG_KMS("[CONNECTOR:%d:%s], [ENCODER:%d:%s]\n",
- connector->base.id, drm_get_connector_name(connector),
- encoder->base.id, drm_get_encoder_name(encoder));
-
- /*
- * Algorithm gets a little messy:
- *
- * - if the connector already has an assigned crtc, use it (but make
- * sure it's on first)
- *
- * - try to find the first unused crtc that can drive this connector,
- * and use that if we find one
- */
-
- /* See if we already have a CRTC for this connector */
- if (encoder->crtc) {
- crtc = encoder->crtc;
-
- intel_crtc = to_intel_crtc(crtc);
- old->dpms_mode = intel_crtc->dpms_mode;
- old->load_detect_temp = false;
-
- /* Make sure the crtc and connector are running */
- if (intel_crtc->dpms_mode != DRM_MODE_DPMS_ON) {
- struct drm_encoder_helper_funcs *encoder_funcs;
- struct drm_crtc_helper_funcs *crtc_funcs;
-
- crtc_funcs = crtc->helper_private;
- crtc_funcs->dpms(crtc, DRM_MODE_DPMS_ON);
-
- encoder_funcs = encoder->helper_private;
- encoder_funcs->dpms(encoder, DRM_MODE_DPMS_ON);
- }
+ struct drm_device *dev = crtc->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ int pipe = intel_crtc->pipe;
+ int ret;
- return true;
- }
+ drm_vblank_pre_modeset(dev, pipe);
- /* Find an unused one (if possible) */
- list_for_each_entry(possible_crtc, &dev->mode_config.crtc_list, head) {
- i++;
- if (!(encoder->possible_crtcs & (1 << i)))
- continue;
- if (!possible_crtc->enabled) {
- crtc = possible_crtc;
- break;
- }
- }
+ ret = dev_priv->display.crtc_mode_set(crtc, mode, adjusted_mode,
+ x, y, old_fb);
+ drm_vblank_post_modeset(dev, pipe);
- /*
- * If we didn't find an unused CRTC, don't use any.
- */
- if (!crtc) {
- DRM_DEBUG_KMS("no pipe available for load-detect\n");
- return false;
- }
+ if (ret)
+ intel_crtc->dpms_mode = DRM_MODE_DPMS_OFF;
+ else
+ intel_crtc->dpms_mode = DRM_MODE_DPMS_ON;
- encoder->crtc = crtc;
- connector->encoder = encoder;
+ return ret;
+}
- intel_crtc = to_intel_crtc(crtc);
- old->dpms_mode = intel_crtc->dpms_mode;
- old->load_detect_temp = true;
- old->release_fb = NULL;
+static bool intel_eld_uptodate(struct drm_connector *connector,
+ int reg_eldv, uint32_t bits_eldv,
+ int reg_elda, uint32_t bits_elda,
+ int reg_edid)
+{
+ struct drm_i915_private *dev_priv = connector->dev->dev_private;
+ uint8_t *eld = connector->eld;
+ uint32_t i;
- if (!mode)
- mode = &load_detect_mode;
+ i = I915_READ(reg_eldv);
+ i &= bits_eldv;
- old_fb = crtc->fb;
+ if (!eld[0])
+ return !i;
- /* We need a framebuffer large enough to accommodate all accesses
- * that the plane may generate whilst we perform load detection.
- * We can not rely on the fbcon either being present (we get called
- * during its initialisation to detect all boot displays, or it may
- * not even exist) or that it is large enough to satisfy the
- * requested mode.
- */
- crtc->fb = mode_fits_in_fbdev(dev, mode);
- if (crtc->fb == NULL) {
- DRM_DEBUG_KMS("creating tmp fb for load-detection\n");
- crtc->fb = intel_framebuffer_create_for_mode(dev, mode, 24, 32);
- old->release_fb = crtc->fb;
- } else
- DRM_DEBUG_KMS("reusing fbdev for load-detection framebuffer\n");
- if (IS_ERR(crtc->fb)) {
- DRM_DEBUG_KMS("failed to allocate framebuffer for load-detection\n");
- crtc->fb = old_fb;
+ if (!i)
return false;
- }
- if (!drm_crtc_helper_set_mode(crtc, mode, 0, 0, old_fb)) {
- DRM_DEBUG_KMS("failed to set mode on load-detect pipe\n");
- if (old->release_fb)
- old->release_fb->funcs->destroy(old->release_fb);
- crtc->fb = old_fb;
- return false;
- }
+ i = I915_READ(reg_elda);
+ i &= ~bits_elda;
+ I915_WRITE(reg_elda, i);
- /* let the connector get through one full cycle before testing */
- intel_wait_for_vblank(dev, intel_crtc->pipe);
+ for (i = 0; i < eld[2]; i++)
+ if (I915_READ(reg_edid) != *((uint32_t *)eld + i))
+ return false;
return true;
}
-void intel_release_load_detect_pipe(struct intel_encoder *intel_encoder,
- struct drm_connector *connector,
- struct intel_load_detect_pipe *old)
+static void g4x_write_eld(struct drm_connector *connector,
+ struct drm_crtc *crtc)
{
- struct drm_encoder *encoder = &intel_encoder->base;
- struct drm_device *dev = encoder->dev;
- struct drm_crtc *crtc = encoder->crtc;
- struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private;
- struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
+ struct drm_i915_private *dev_priv = connector->dev->dev_private;
+ uint8_t *eld = connector->eld;
+ uint32_t eldv;
+ uint32_t len;
+ uint32_t i;
- DRM_DEBUG_KMS("[CONNECTOR:%d:%s], [ENCODER:%d:%s]\n",
- connector->base.id, drm_get_connector_name(connector),
- encoder->base.id, drm_get_encoder_name(encoder));
+ i = I915_READ(G4X_AUD_VID_DID);
- if (old->load_detect_temp) {
- connector->encoder = NULL;
- drm_helper_disable_unused_functions(dev);
+ if (i == INTEL_AUDIO_DEVBLC || i == INTEL_AUDIO_DEVCL)
+ eldv = G4X_ELDV_DEVCL_DEVBLC;
+ else
+ eldv = G4X_ELDV_DEVCTG;
- if (old->release_fb)
- old->release_fb->funcs->destroy(old->release_fb);
+ if (intel_eld_uptodate(connector,
+ G4X_AUD_CNTL_ST, eldv,
+ G4X_AUD_CNTL_ST, G4X_ELD_ADDR,
+ G4X_HDMIW_HDMIEDID))
+ return;
+
+ i = I915_READ(G4X_AUD_CNTL_ST);
+ i &= ~(eldv | G4X_ELD_ADDR);
+ len = (i >> 9) & 0x1f; /* ELD buffer size */
+ I915_WRITE(G4X_AUD_CNTL_ST, i);
+ if (!eld[0])
return;
- }
- /* Switch crtc and encoder back off if necessary */
- if (old->dpms_mode != DRM_MODE_DPMS_ON) {
- encoder_funcs->dpms(encoder, old->dpms_mode);
- crtc_funcs->dpms(crtc, old->dpms_mode);
- }
+ len = min_t(uint8_t, eld[2], len);
+ DRM_DEBUG_DRIVER("ELD size %d\n", len);
+ for (i = 0; i < len; i++)
+ I915_WRITE(G4X_HDMIW_HDMIEDID, *((uint32_t *)eld + i));
+
+ i = I915_READ(G4X_AUD_CNTL_ST);
+ i |= eldv;
+ I915_WRITE(G4X_AUD_CNTL_ST, i);
}
-/* Returns the clock of the currently programmed mode of the given pipe. */
-static int intel_crtc_clock_get(struct drm_device *dev, struct drm_crtc *crtc)
+static void ironlake_write_eld(struct drm_connector *connector,
+ struct drm_crtc *crtc)
{
- struct drm_i915_private *dev_priv = dev->dev_private;
- struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
- int pipe = intel_crtc->pipe;
- u32 dpll = I915_READ(DPLL(pipe));
- u32 fp;
- intel_clock_t clock;
-
- if ((dpll & DISPLAY_RATE_SELECT_FPA1) == 0)
- fp = I915_READ(FP0(pipe));
- else
- fp = I915_READ(FP1(pipe));
+ struct drm_i915_private *dev_priv = connector->dev->dev_private;
+ uint8_t *eld = connector->eld;
+ uint32_t eldv;
+ uint32_t i;
+ int len;
+ int hdmiw_hdmiedid;
+ int aud_config;
+ int aud_cntl_st;
+ int aud_cntrl_st2;
- clock.m1 = (fp & FP_M1_DIV_MASK) >> FP_M1_DIV_SHIFT;
- if (IS_PINEVIEW(dev)) {
- clock.n = ffs((fp & FP_N_PINEVIEW_DIV_MASK) >> FP_N_DIV_SHIFT) - 1;
- clock.m2 = (fp & FP_M2_PINEVIEW_DIV_MASK) >> FP_M2_DIV_SHIFT;
+ if (HAS_PCH_IBX(connector->dev)) {
+ hdmiw_hdmiedid = IBX_HDMIW_HDMIEDID_A;
+ aud_config = IBX_AUD_CONFIG_A;
+ aud_cntl_st = IBX_AUD_CNTL_ST_A;
+ aud_cntrl_st2 = IBX_AUD_CNTL_ST2;
} else {
- clock.n = (fp & FP_N_DIV_MASK) >> FP_N_DIV_SHIFT;
- clock.m2 = (fp & FP_M2_DIV_MASK) >> FP_M2_DIV_SHIFT;
+ hdmiw_hdmiedid = CPT_HDMIW_HDMIEDID_A;
+ aud_config = CPT_AUD_CONFIG_A;
+ aud_cntl_st = CPT_AUD_CNTL_ST_A;
+ aud_cntrl_st2 = CPT_AUD_CNTRL_ST2;
}
- if (!IS_GEN2(dev)) {
- if (IS_PINEVIEW(dev))
- clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK_PINEVIEW) >>
- DPLL_FPA01_P1_POST_DIV_SHIFT_PINEVIEW);
- else
- clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK) >>
- DPLL_FPA01_P1_POST_DIV_SHIFT);
+ i = to_intel_crtc(crtc)->pipe;
+ hdmiw_hdmiedid += i * 0x100;
+ aud_cntl_st += i * 0x100;
+ aud_config += i * 0x100;
- switch (dpll & DPLL_MODE_MASK) {
- case DPLLB_MODE_DAC_SERIAL:
- clock.p2 = dpll & DPLL_DAC_SERIAL_P2_CLOCK_DIV_5 ?
- 5 : 10;
- break;
- case DPLLB_MODE_LVDS:
- clock.p2 = dpll & DPLLB_LVDS_P2_CLOCK_DIV_7 ?
- 7 : 14;
- break;
- default:
- DRM_DEBUG_KMS("Unknown DPLL mode %08x in programmed "
- "mode\n", (int)(dpll & DPLL_MODE_MASK));
- return 0;
- }
+ DRM_DEBUG_DRIVER("ELD on pipe %c\n", pipe_name(i));
- /* XXX: Handle the 100Mhz refclk */
- intel_clock(dev, 96000, &clock);
+ i = I915_READ(aud_cntl_st);
+ i = (i >> 29) & 0x3; /* DIP_Port_Select, 0x1 = PortB */
+ if (!i) {
+ DRM_DEBUG_DRIVER("Audio directed to unknown port\n");
+ /* operate blindly on all ports */
+ eldv = IBX_ELD_VALIDB;
+ eldv |= IBX_ELD_VALIDB << 4;
+ eldv |= IBX_ELD_VALIDB << 8;
} else {
- bool is_lvds = (pipe == 1) && (I915_READ(LVDS) & LVDS_PORT_EN);
+ DRM_DEBUG_DRIVER("ELD on port %c\n", 'A' + i);
+ eldv = IBX_ELD_VALIDB << ((i - 1) * 4);
+ }
- if (is_lvds) {
- clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK_I830_LVDS) >>
- DPLL_FPA01_P1_POST_DIV_SHIFT);
- clock.p2 = 14;
+ if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT)) {
+ DRM_DEBUG_DRIVER("ELD: DisplayPort detected\n");
+ eld[5] |= (1 << 2); /* Conn_Type, 0x1 = DisplayPort */
+ I915_WRITE(aud_config, AUD_CONFIG_N_VALUE_INDEX); /* 0x1 = DP */
+ } else
+ I915_WRITE(aud_config, 0);
- if ((dpll & PLL_REF_INPUT_MASK) ==
- PLLB_REF_INPUT_SPREADSPECTRUMIN) {
- /* XXX: might not be 66MHz */
- intel_clock(dev, 66000, &clock);
- } else
- intel_clock(dev, 48000, &clock);
- } else {
- if (dpll & PLL_P1_DIVIDE_BY_TWO)
- clock.p1 = 2;
- else {
- clock.p1 = ((dpll & DPLL_FPA01_P1_POST_DIV_MASK_I830) >>
- DPLL_FPA01_P1_POST_DIV_SHIFT) + 2;
- }
- if (dpll & PLL_P2_DIVIDE_BY_4)
- clock.p2 = 4;
- else
- clock.p2 = 2;
+ if (intel_eld_uptodate(connector,
+ aud_cntrl_st2, eldv,
+ aud_cntl_st, IBX_ELD_ADDRESS,
+ hdmiw_hdmiedid))
+ return;
+
+ i = I915_READ(aud_cntrl_st2);
+ i &= ~eldv;
+ I915_WRITE(aud_cntrl_st2, i);
- intel_clock(dev, 48000, &clock);
- }
- }
+ if (!eld[0])
+ return;
- /* XXX: It would be nice to validate the clocks, but we can't reuse
- * i830PllIsValid() because it relies on the xf86_config connector
- * configuration being accurate, which it isn't necessarily.
- */
+ i = I915_READ(aud_cntl_st);
+ i &= ~IBX_ELD_ADDRESS;
+ I915_WRITE(aud_cntl_st, i);
- return clock.dot;
+ len = min_t(uint8_t, eld[2], 21); /* 84 bytes of hw ELD buffer */
+ DRM_DEBUG_DRIVER("ELD size %d\n", len);
+ for (i = 0; i < len; i++)
+ I915_WRITE(hdmiw_hdmiedid, *((uint32_t *)eld + i));
+
+ i = I915_READ(aud_cntrl_st2);
+ i |= eldv;
+ I915_WRITE(aud_cntrl_st2, i);
}
-/** Returns the currently programmed mode of the given pipe. */
-struct drm_display_mode *intel_crtc_mode_get(struct drm_device *dev,
- struct drm_crtc *crtc)
+void intel_write_eld(struct drm_encoder *encoder,
+ struct drm_display_mode *mode)
{
+ struct drm_crtc *crtc = encoder->crtc;
+ struct drm_connector *connector;
+ struct drm_device *dev = encoder->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
- struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
- int pipe = intel_crtc->pipe;
- struct drm_display_mode *mode;
- int htot = I915_READ(HTOTAL(pipe));
- int hsync = I915_READ(HSYNC(pipe));
- int vtot = I915_READ(VTOTAL(pipe));
- int vsync = I915_READ(VSYNC(pipe));
- mode = kzalloc(sizeof(*mode), GFP_KERNEL);
- if (!mode)
- return NULL;
+ connector = drm_select_eld(encoder, mode);
+ if (!connector)
+ return;
- mode->clock = intel_crtc_clock_get(dev, crtc);
- mode->hdisplay = (htot & 0xffff) + 1;
- mode->htotal = ((htot & 0xffff0000) >> 16) + 1;
- mode->hsync_start = (hsync & 0xffff) + 1;
- mode->hsync_end = ((hsync & 0xffff0000) >> 16) + 1;
- mode->vdisplay = (vtot & 0xffff) + 1;
- mode->vtotal = ((vtot & 0xffff0000) >> 16) + 1;
- mode->vsync_start = (vsync & 0xffff) + 1;
- mode->vsync_end = ((vsync & 0xffff0000) >> 16) + 1;
+ DRM_DEBUG_DRIVER("ELD on [CONNECTOR:%d:%s], [ENCODER:%d:%s]\n",
+ connector->base.id,
+ drm_get_connector_name(connector),
+ connector->encoder->base.id,
+ drm_get_encoder_name(connector->encoder));
- drm_mode_set_name(mode);
- drm_mode_set_crtcinfo(mode, 0);
+ connector->eld[6] = drm_av_sync_delay(connector, mode) / 2;
- return mode;
+ if (dev_priv->display.write_eld)
+ dev_priv->display.write_eld(connector, crtc);
}
-#define GPU_IDLE_TIMEOUT 500 /* ms */
-
-/* When this timer fires, we've been idle for awhile */
-static void intel_gpu_idle_timer(unsigned long arg)
+/** Loads the palette/gamma unit for the CRTC with the prepared values */
+void intel_crtc_load_lut(struct drm_crtc *crtc)
{
- struct drm_device *dev = (struct drm_device *)arg;
- drm_i915_private_t *dev_priv = dev->dev_private;
+ struct drm_device *dev = crtc->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ int palreg = PALETTE(intel_crtc->pipe);
+ int i;
- if (!list_empty(&dev_priv->mm.active_list)) {
- /* Still processing requests, so just re-arm the timer. */
- mod_timer(&dev_priv->idle_timer, jiffies +
- msecs_to_jiffies(GPU_IDLE_TIMEOUT));
+ /* The clocks have to be on to load the palette. */
+ if (!crtc->enabled || !intel_crtc->active)
return;
- }
- dev_priv->busy = false;
- queue_work(dev_priv->wq, &dev_priv->idle_work);
-}
+ /* use legacy palette for Ironlake */
+ if (HAS_PCH_SPLIT(dev))
+ palreg = LGC_PALETTE(intel_crtc->pipe);
-#define CRTC_IDLE_TIMEOUT 1000 /* ms */
+ for (i = 0; i < 256; i++) {
+ I915_WRITE(palreg + 4 * i,
+ (intel_crtc->lut_r[i] << 16) |
+ (intel_crtc->lut_g[i] << 8) |
+ intel_crtc->lut_b[i]);
+ }
+}
-static void intel_crtc_idle_timer(unsigned long arg)
+static void i845_update_cursor(struct drm_crtc *crtc, u32 base)
{
- struct intel_crtc *intel_crtc = (struct intel_crtc *)arg;
- struct drm_crtc *crtc = &intel_crtc->base;
- drm_i915_private_t *dev_priv = crtc->dev->dev_private;
- struct intel_framebuffer *intel_fb;
+ struct drm_device *dev = crtc->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ bool visible = base != 0;
+ u32 cntl;
- intel_fb = to_intel_framebuffer(crtc->fb);
- if (intel_fb && intel_fb->obj->active) {
- /* The framebuffer is still being accessed by the GPU. */
- mod_timer(&intel_crtc->idle_timer, jiffies +
- msecs_to_jiffies(CRTC_IDLE_TIMEOUT));
+ if (intel_crtc->cursor_visible == visible)
return;
- }
- intel_crtc->busy = false;
- queue_work(dev_priv->wq, &dev_priv->idle_work);
+ cntl = I915_READ(_CURACNTR);
+ if (visible) {
+ /* On these chipsets we can only modify the base whilst
+ * the cursor is disabled.
+ */
+ I915_WRITE(_CURABASE, base);
+
+ cntl &= ~(CURSOR_FORMAT_MASK);
+ /* XXX width must be 64, stride 256 => 0x00 << 28 */
+ cntl |= CURSOR_ENABLE |
+ CURSOR_GAMMA_ENABLE |
+ CURSOR_FORMAT_ARGB;
+ } else
+ cntl &= ~(CURSOR_ENABLE | CURSOR_GAMMA_ENABLE);
+ I915_WRITE(_CURACNTR, cntl);
+
+ intel_crtc->cursor_visible = visible;
}
-static void intel_increase_pllclock(struct drm_crtc *crtc)
+static void i9xx_update_cursor(struct drm_crtc *crtc, u32 base)
{
struct drm_device *dev = crtc->dev;
- drm_i915_private_t *dev_priv = dev->dev_private;
+ struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
int pipe = intel_crtc->pipe;
- int dpll_reg = DPLL(pipe);
- int dpll;
-
- if (HAS_PCH_SPLIT(dev))
- return;
+ bool visible = base != 0;
- if (!dev_priv->lvds_downclock_avail)
- return;
+ if (intel_crtc->cursor_visible != visible) {
+ uint32_t cntl = I915_READ(CURCNTR(pipe));
+ if (base) {
+ cntl &= ~(CURSOR_MODE | MCURSOR_PIPE_SELECT);
+ cntl |= CURSOR_MODE_64_ARGB_AX | MCURSOR_GAMMA_ENABLE;
+ cntl |= pipe << 28; /* Connect to correct pipe */
+ } else {
+ cntl &= ~(CURSOR_MODE | MCURSOR_GAMMA_ENABLE);
+ cntl |= CURSOR_MODE_DISABLE;
+ }
+ I915_WRITE(CURCNTR(pipe), cntl);
- dpll = I915_READ(dpll_reg);
- if (!HAS_PIPE_CXSR(dev) && (dpll & DISPLAY_RATE_SELECT_FPA1)) {
- DRM_DEBUG_DRIVER("upclocking LVDS\n");
+ intel_crtc->cursor_visible = visible;
+ }
+ /* and commit changes on next vblank */
+ I915_WRITE(CURBASE(pipe), base);
+}
- assert_panel_unlocked(dev_priv, pipe);
+static void ivb_update_cursor(struct drm_crtc *crtc, u32 base)
+{
+ struct drm_device *dev = crtc->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ int pipe = intel_crtc->pipe;
+ bool visible = base != 0;
- dpll &= ~DISPLAY_RATE_SELECT_FPA1;
- I915_WRITE(dpll_reg, dpll);
- intel_wait_for_vblank(dev, pipe);
+ if (intel_crtc->cursor_visible != visible) {
+ uint32_t cntl = I915_READ(CURCNTR_IVB(pipe));
+ if (base) {
+ cntl &= ~CURSOR_MODE;
+ cntl |= CURSOR_MODE_64_ARGB_AX | MCURSOR_GAMMA_ENABLE;
+ } else {
+ cntl &= ~(CURSOR_MODE | MCURSOR_GAMMA_ENABLE);
+ cntl |= CURSOR_MODE_DISABLE;
+ }
+ I915_WRITE(CURCNTR_IVB(pipe), cntl);
- dpll = I915_READ(dpll_reg);
- if (dpll & DISPLAY_RATE_SELECT_FPA1)
- DRM_DEBUG_DRIVER("failed to upclock LVDS!\n");
+ intel_crtc->cursor_visible = visible;
}
-
- /* Schedule downclock */
- mod_timer(&intel_crtc->idle_timer, jiffies +
- msecs_to_jiffies(CRTC_IDLE_TIMEOUT));
+ /* and commit changes on next vblank */
+ I915_WRITE(CURBASE_IVB(pipe), base);
}
-static void intel_decrease_pllclock(struct drm_crtc *crtc)
+/* If no-part of the cursor is visible on the framebuffer, then the GPU may hang... */
+static void intel_crtc_update_cursor(struct drm_crtc *crtc,
+ bool on)
{
struct drm_device *dev = crtc->dev;
- drm_i915_private_t *dev_priv = dev->dev_private;
+ struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
int pipe = intel_crtc->pipe;
- int dpll_reg = DPLL(pipe);
- int dpll = I915_READ(dpll_reg);
+ int x = intel_crtc->cursor_x;
+ int y = intel_crtc->cursor_y;
+ u32 base, pos;
+ bool visible;
- if (HAS_PCH_SPLIT(dev))
- return;
+ pos = 0;
- if (!dev_priv->lvds_downclock_avail)
+ if (on && crtc->enabled && crtc->fb) {
+ base = intel_crtc->cursor_addr;
+ if (x > (int) crtc->fb->width)
+ base = 0;
+
+ if (y > (int) crtc->fb->height)
+ base = 0;
+ } else
+ base = 0;
+
+ if (x < 0) {
+ if (x + intel_crtc->cursor_width < 0)
+ base = 0;
+
+ pos |= CURSOR_POS_SIGN << CURSOR_X_SHIFT;
+ x = -x;
+ }
+ pos |= x << CURSOR_X_SHIFT;
+
+ if (y < 0) {
+ if (y + intel_crtc->cursor_height < 0)
+ base = 0;
+
+ pos |= CURSOR_POS_SIGN << CURSOR_Y_SHIFT;
+ y = -y;
+ }
+ pos |= y << CURSOR_Y_SHIFT;
+
+ visible = base != 0;
+ if (!visible && !intel_crtc->cursor_visible)
return;
- /*
- * Since this is called by a timer, we should never get here in
- * the manual case.
- */
- if (!HAS_PIPE_CXSR(dev) && intel_crtc->lowfreq_avail) {
- DRM_DEBUG_DRIVER("downclocking LVDS\n");
+ if (IS_IVYBRIDGE(dev)) {
+ I915_WRITE(CURPOS_IVB(pipe), pos);
+ ivb_update_cursor(crtc, base);
+ } else {
+ I915_WRITE(CURPOS(pipe), pos);
+ if (IS_845G(dev) || IS_I865G(dev))
+ i845_update_cursor(crtc, base);
+ else
+ i9xx_update_cursor(crtc, base);
+ }
+
+ if (visible)
+ intel_mark_busy(dev, to_intel_framebuffer(crtc->fb)->obj);
+}
+
+static int intel_crtc_cursor_set(struct drm_crtc *crtc,
+ struct drm_file *file,
+ uint32_t handle,
+ uint32_t width, uint32_t height)
+{
+ struct drm_device *dev = crtc->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ struct drm_i915_gem_object *obj;
+ uint32_t addr;
+ int ret;
- assert_panel_unlocked(dev_priv, pipe);
+ DRM_DEBUG_KMS("\n");
- dpll |= DISPLAY_RATE_SELECT_FPA1;
- I915_WRITE(dpll_reg, dpll);
- intel_wait_for_vblank(dev, pipe);
- dpll = I915_READ(dpll_reg);
- if (!(dpll & DISPLAY_RATE_SELECT_FPA1))
- DRM_DEBUG_DRIVER("failed to downclock LVDS!\n");
+ /* if we want to turn off the cursor ignore width and height */
+ if (!handle) {
+ DRM_DEBUG_KMS("cursor off\n");
+ addr = 0;
+ obj = NULL;
+ mutex_lock(&dev->struct_mutex);
+ goto finish;
}
-}
+ /* Currently we only support 64x64 cursors */
+ if (width != 64 || height != 64) {
+ DRM_ERROR("we currently only support 64x64 cursors\n");
+ return -EINVAL;
+ }
-/**
- * intel_idle_update - adjust clocks for idleness
- * @work: work struct
- *
- * Either the GPU or display (or both) went idle. Check the busy status
- * here and adjust the CRTC and GPU clocks as necessary.
- */
-static void intel_idle_update(struct work_struct *work)
-{
- drm_i915_private_t *dev_priv = container_of(work, drm_i915_private_t,
- idle_work);
- struct drm_device *dev = dev_priv->dev;
- struct drm_crtc *crtc;
- struct intel_crtc *intel_crtc;
+ obj = to_intel_bo(drm_gem_object_lookup(dev, file, handle));
+ if (&obj->base == NULL)
+ return -ENOENT;
- if (!i915_powersave)
- return;
+ if (obj->base.size < width * height * 4) {
+ DRM_ERROR("buffer is to small\n");
+ ret = -ENOMEM;
+ goto fail;
+ }
+ /* we only need to pin inside GTT if cursor is non-phy */
mutex_lock(&dev->struct_mutex);
+ if (!dev_priv->info->cursor_needs_physical) {
+ if (obj->tiling_mode) {
+ DRM_ERROR("cursor cannot be tiled\n");
+ ret = -EINVAL;
+ goto fail_locked;
+ }
- i915_update_gfx_val(dev_priv);
+ ret = i915_gem_object_pin_to_display_plane(obj, 0, NULL);
+ if (ret) {
+ DRM_ERROR("failed to move cursor bo into the GTT\n");
+ goto fail_locked;
+ }
- list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
- /* Skip inactive CRTCs */
- if (!crtc->fb)
- continue;
+ ret = i915_gem_object_put_fence(obj);
+ if (ret) {
+ DRM_ERROR("failed to release fence for cursor");
+ goto fail_unpin;
+ }
- intel_crtc = to_intel_crtc(crtc);
- if (!intel_crtc->busy)
- intel_decrease_pllclock(crtc);
+ addr = obj->gtt_offset;
+ } else {
+ int align = IS_I830(dev) ? 16 * 1024 : 256;
+ ret = i915_gem_attach_phys_object(dev, obj,
+ (intel_crtc->pipe == 0) ? I915_GEM_PHYS_CURSOR_0 : I915_GEM_PHYS_CURSOR_1,
+ align);
+ if (ret) {
+ DRM_ERROR("failed to attach phys object\n");
+ goto fail_locked;
+ }
+ addr = obj->phys_obj->handle->busaddr;
}
+ if (IS_GEN2(dev))
+ I915_WRITE(CURSIZE, (height << 12) | width);
- mutex_unlock(&dev->struct_mutex);
-}
-
-/**
- * intel_mark_busy - mark the GPU and possibly the display busy
- * @dev: drm device
- * @obj: object we're operating on
- *
- * Callers can use this function to indicate that the GPU is busy processing
- * commands. If @obj matches one of the CRTC objects (i.e. it's a scanout
- * buffer), we'll also mark the display as busy, so we know to increase its
- * clock frequency.
- */
-void intel_mark_busy(struct drm_device *dev, struct drm_i915_gem_object *obj)
-{
- drm_i915_private_t *dev_priv = dev->dev_private;
- struct drm_crtc *crtc = NULL;
- struct intel_framebuffer *intel_fb;
- struct intel_crtc *intel_crtc;
+ finish:
+ if (intel_crtc->cursor_bo) {
+ if (dev_priv->info->cursor_needs_physical) {
+ if (intel_crtc->cursor_bo != obj)
+ i915_gem_detach_phys_object(dev, intel_crtc->cursor_bo);
+ } else
+ i915_gem_object_unpin(intel_crtc->cursor_bo);
+ drm_gem_object_unreference(&intel_crtc->cursor_bo->base);
+ }
- if (!drm_core_check_feature(dev, DRIVER_MODESET))
- return;
+ mutex_unlock(&dev->struct_mutex);
- if (!dev_priv->busy)
- dev_priv->busy = true;
- else
- mod_timer(&dev_priv->idle_timer, jiffies +
- msecs_to_jiffies(GPU_IDLE_TIMEOUT));
+ intel_crtc->cursor_addr = addr;
+ intel_crtc->cursor_bo = obj;
+ intel_crtc->cursor_width = width;
+ intel_crtc->cursor_height = height;
- list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
- if (!crtc->fb)
- continue;
+ intel_crtc_update_cursor(crtc, true);
- intel_crtc = to_intel_crtc(crtc);
- intel_fb = to_intel_framebuffer(crtc->fb);
- if (intel_fb->obj == obj) {
- if (!intel_crtc->busy) {
- /* Non-busy -> busy, upclock */
- intel_increase_pllclock(crtc);
- intel_crtc->busy = true;
- } else {
- /* Busy -> busy, put off timer */
- mod_timer(&intel_crtc->idle_timer, jiffies +
- msecs_to_jiffies(CRTC_IDLE_TIMEOUT));
- }
- }
- }
+ return 0;
+fail_unpin:
+ i915_gem_object_unpin(obj);
+fail_locked:
+ mutex_unlock(&dev->struct_mutex);
+fail:
+ drm_gem_object_unreference_unlocked(&obj->base);
+ return ret;
}
-static void intel_crtc_destroy(struct drm_crtc *crtc)
+static int intel_crtc_cursor_move(struct drm_crtc *crtc, int x, int y)
{
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
- struct drm_device *dev = crtc->dev;
- struct intel_unpin_work *work;
- unsigned long flags;
-
- spin_lock_irqsave(&dev->event_lock, flags);
- work = intel_crtc->unpin_work;
- intel_crtc->unpin_work = NULL;
- spin_unlock_irqrestore(&dev->event_lock, flags);
- if (work) {
- cancel_work_sync(&work->work);
- kfree(work);
- }
+ intel_crtc->cursor_x = x;
+ intel_crtc->cursor_y = y;
- drm_crtc_cleanup(crtc);
+ intel_crtc_update_cursor(crtc, true);
- kfree(intel_crtc);
+ return 0;
}
-static void intel_unpin_work_fn(struct work_struct *__work)
+/** Sets the color ramps on behalf of RandR */
+void intel_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
+ u16 blue, int regno)
{
- struct intel_unpin_work *work =
- container_of(__work, struct intel_unpin_work, work);
-
- mutex_lock(&work->dev->struct_mutex);
- intel_unpin_fb_obj(work->old_fb_obj);
- drm_gem_object_unreference(&work->pending_flip_obj->base);
- drm_gem_object_unreference(&work->old_fb_obj->base);
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
- intel_update_fbc(work->dev);
- mutex_unlock(&work->dev->struct_mutex);
- kfree(work);
+ intel_crtc->lut_r[regno] = red >> 8;
+ intel_crtc->lut_g[regno] = green >> 8;
+ intel_crtc->lut_b[regno] = blue >> 8;
}
-static void do_intel_finish_page_flip(struct drm_device *dev,
- struct drm_crtc *crtc)
+void intel_crtc_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
+ u16 *blue, int regno)
{
- drm_i915_private_t *dev_priv = dev->dev_private;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
- struct intel_unpin_work *work;
- struct drm_i915_gem_object *obj;
- struct drm_pending_vblank_event *e;
- struct timeval tnow, tvbl;
- unsigned long flags;
-
- /* Ignore early vblank irqs */
- if (intel_crtc == NULL)
- return;
-
- do_gettimeofday(&tnow);
-
- spin_lock_irqsave(&dev->event_lock, flags);
- work = intel_crtc->unpin_work;
- if (work == NULL || !work->pending) {
- spin_unlock_irqrestore(&dev->event_lock, flags);
- return;
- }
-
- intel_crtc->unpin_work = NULL;
-
- if (work->event) {
- e = work->event;
- e->event.sequence = drm_vblank_count_and_time(dev, intel_crtc->pipe, &tvbl);
- /* Called before vblank count and timestamps have
- * been updated for the vblank interval of flip
- * completion? Need to increment vblank count and
- * add one videorefresh duration to returned timestamp
- * to account for this. We assume this happened if we
- * get called over 0.9 frame durations after the last
- * timestamped vblank.
- *
- * This calculation can not be used with vrefresh rates
- * below 5Hz (10Hz to be on the safe side) without
- * promoting to 64 integers.
- */
- if (10 * (timeval_to_ns(&tnow) - timeval_to_ns(&tvbl)) >
- 9 * crtc->framedur_ns) {
- e->event.sequence++;
- tvbl = ns_to_timeval(timeval_to_ns(&tvbl) +
- crtc->framedur_ns);
- }
+ *red = intel_crtc->lut_r[regno] << 8;
+ *green = intel_crtc->lut_g[regno] << 8;
+ *blue = intel_crtc->lut_b[regno] << 8;
+}
- e->event.tv_sec = tvbl.tv_sec;
- e->event.tv_usec = tvbl.tv_usec;
+static void intel_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green,
+ u16 *blue, uint32_t start, uint32_t size)
+{
+ int end = (start + size > 256) ? 256 : start + size, i;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
- list_add_tail(&e->base.link,
- &e->base.file_priv->event_list);
- wake_up_interruptible(&e->base.file_priv->event_wait);
+ for (i = start; i < end; i++) {
+ intel_crtc->lut_r[i] = red[i] >> 8;
+ intel_crtc->lut_g[i] = green[i] >> 8;
+ intel_crtc->lut_b[i] = blue[i] >> 8;
}
- drm_vblank_put(dev, intel_crtc->pipe);
+ intel_crtc_load_lut(crtc);
+}
- spin_unlock_irqrestore(&dev->event_lock, flags);
+/**
+ * Get a pipe with a simple mode set on it for doing load-based monitor
+ * detection.
+ *
+ * It will be up to the load-detect code to adjust the pipe as appropriate for
+ * its requirements. The pipe will be connected to no other encoders.
+ *
+ * Currently this code will only succeed if there is a pipe with no encoders
+ * configured for it. In the future, it could choose to temporarily disable
+ * some outputs to free up a pipe for its use.
+ *
+ * \return crtc, or NULL if no pipes are available.
+ */
- obj = work->old_fb_obj;
+/* VESA 640x480x72Hz mode to set on the pipe */
+static struct drm_display_mode load_detect_mode = {
+ DRM_MODE("640x480", DRM_MODE_TYPE_DEFAULT, 31500, 640, 664,
+ 704, 832, 0, 480, 489, 491, 520, 0, DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
+};
- atomic_clear_mask(1 << intel_crtc->plane,
- &obj->pending_flip.counter);
- if (atomic_read(&obj->pending_flip) == 0)
- wake_up(&dev_priv->pending_flip_queue);
+static struct drm_framebuffer *
+intel_framebuffer_create(struct drm_device *dev,
+ struct drm_mode_fb_cmd2 *mode_cmd,
+ struct drm_i915_gem_object *obj)
+{
+ struct intel_framebuffer *intel_fb;
+ int ret;
- schedule_work(&work->work);
+ intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
+ if (!intel_fb) {
+ drm_gem_object_unreference_unlocked(&obj->base);
+ return ERR_PTR(-ENOMEM);
+ }
- trace_i915_flip_complete(intel_crtc->plane, work->pending_flip_obj);
+ ret = intel_framebuffer_init(dev, intel_fb, mode_cmd, obj);
+ if (ret) {
+ drm_gem_object_unreference_unlocked(&obj->base);
+ kfree(intel_fb);
+ return ERR_PTR(ret);
+ }
+
+ return &intel_fb->base;
}
-void intel_finish_page_flip(struct drm_device *dev, int pipe)
+static u32
+intel_framebuffer_pitch_for_width(int width, int bpp)
{
- drm_i915_private_t *dev_priv = dev->dev_private;
- struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
-
- do_intel_finish_page_flip(dev, crtc);
+ u32 pitch = DIV_ROUND_UP(width * bpp, 8);
+ return ALIGN(pitch, 64);
}
-void intel_finish_page_flip_plane(struct drm_device *dev, int plane)
+static u32
+intel_framebuffer_size_for_mode(struct drm_display_mode *mode, int bpp)
{
- drm_i915_private_t *dev_priv = dev->dev_private;
- struct drm_crtc *crtc = dev_priv->plane_to_crtc_mapping[plane];
-
- do_intel_finish_page_flip(dev, crtc);
+ u32 pitch = intel_framebuffer_pitch_for_width(mode->hdisplay, bpp);
+ return ALIGN(pitch * mode->vdisplay, PAGE_SIZE);
}
-void intel_prepare_page_flip(struct drm_device *dev, int plane)
+static struct drm_framebuffer *
+intel_framebuffer_create_for_mode(struct drm_device *dev,
+ struct drm_display_mode *mode,
+ int depth, int bpp)
{
- drm_i915_private_t *dev_priv = dev->dev_private;
- struct intel_crtc *intel_crtc =
- to_intel_crtc(dev_priv->plane_to_crtc_mapping[plane]);
- unsigned long flags;
+ struct drm_i915_gem_object *obj;
+ struct drm_mode_fb_cmd2 mode_cmd;
- spin_lock_irqsave(&dev->event_lock, flags);
- if (intel_crtc->unpin_work) {
- if ((++intel_crtc->unpin_work->pending) > 1)
- DRM_ERROR("Prepared flip multiple times\n");
- } else {
- DRM_DEBUG_DRIVER("preparing flip with no unpin work?\n");
- }
- spin_unlock_irqrestore(&dev->event_lock, flags);
+ obj = i915_gem_alloc_object(dev,
+ intel_framebuffer_size_for_mode(mode, bpp));
+ if (obj == NULL)
+ return ERR_PTR(-ENOMEM);
+
+ mode_cmd.width = mode->hdisplay;
+ mode_cmd.height = mode->vdisplay;
+ mode_cmd.pitches[0] = intel_framebuffer_pitch_for_width(mode_cmd.width,
+ bpp);
+ mode_cmd.pixel_format = drm_mode_legacy_fb_format(bpp, depth);
+
+ return intel_framebuffer_create(dev, &mode_cmd, obj);
}
-static int intel_gen2_queue_flip(struct drm_device *dev,
- struct drm_crtc *crtc,
- struct drm_framebuffer *fb,
- struct drm_i915_gem_object *obj)
+static struct drm_framebuffer *
+mode_fits_in_fbdev(struct drm_device *dev,
+ struct drm_display_mode *mode)
{
struct drm_i915_private *dev_priv = dev->dev_private;
- struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
- unsigned long offset;
- u32 flip_mask;
- int ret;
+ struct drm_i915_gem_object *obj;
+ struct drm_framebuffer *fb;
- ret = intel_pin_and_fence_fb_obj(dev, obj, LP_RING(dev_priv));
- if (ret)
- goto out;
+ if (dev_priv->fbdev == NULL)
+ return NULL;
- /* Offset into the new buffer for cases of shared fbs between CRTCs */
- offset = crtc->y * fb->pitches[0] + crtc->x * fb->bits_per_pixel/8;
+ obj = dev_priv->fbdev->ifb.obj;
+ if (obj == NULL)
+ return NULL;
- ret = BEGIN_LP_RING(6);
- if (ret)
- goto out;
+ fb = &dev_priv->fbdev->ifb.base;
+ if (fb->pitches[0] < intel_framebuffer_pitch_for_width(mode->hdisplay,
+ fb->bits_per_pixel))
+ return NULL;
- /* Can't queue multiple flips, so wait for the previous
- * one to finish before executing the next.
- */
- if (intel_crtc->plane)
- flip_mask = MI_WAIT_FOR_PLANE_B_FLIP;
- else
- flip_mask = MI_WAIT_FOR_PLANE_A_FLIP;
- OUT_RING(MI_WAIT_FOR_EVENT | flip_mask);
- OUT_RING(MI_NOOP);
- OUT_RING(MI_DISPLAY_FLIP |
- MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
- OUT_RING(fb->pitches[0]);
- OUT_RING(obj->gtt_offset + offset);
- OUT_RING(0); /* aux display base address, unused */
- ADVANCE_LP_RING();
-out:
- return ret;
+ if (obj->base.size < mode->vdisplay * fb->pitches[0])
+ return NULL;
+
+ return fb;
}
-static int intel_gen3_queue_flip(struct drm_device *dev,
- struct drm_crtc *crtc,
- struct drm_framebuffer *fb,
- struct drm_i915_gem_object *obj)
+bool intel_get_load_detect_pipe(struct intel_encoder *intel_encoder,
+ struct drm_connector *connector,
+ struct drm_display_mode *mode,
+ struct intel_load_detect_pipe *old)
{
- struct drm_i915_private *dev_priv = dev->dev_private;
- struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
- unsigned long offset;
- u32 flip_mask;
- int ret;
+ struct intel_crtc *intel_crtc;
+ struct drm_crtc *possible_crtc;
+ struct drm_encoder *encoder = &intel_encoder->base;
+ struct drm_crtc *crtc = NULL;
+ struct drm_device *dev = encoder->dev;
+ struct drm_framebuffer *old_fb;
+ int i = -1;
- ret = intel_pin_and_fence_fb_obj(dev, obj, LP_RING(dev_priv));
- if (ret)
- goto out;
+ DRM_DEBUG_KMS("[CONNECTOR:%d:%s], [ENCODER:%d:%s]\n",
+ connector->base.id, drm_get_connector_name(connector),
+ encoder->base.id, drm_get_encoder_name(encoder));
- /* Offset into the new buffer for cases of shared fbs between CRTCs */
- offset = crtc->y * fb->pitches[0] + crtc->x * fb->bits_per_pixel/8;
+ /*
+ * Algorithm gets a little messy:
+ *
+ * - if the connector already has an assigned crtc, use it (but make
+ * sure it's on first)
+ *
+ * - try to find the first unused crtc that can drive this connector,
+ * and use that if we find one
+ */
- ret = BEGIN_LP_RING(6);
- if (ret)
- goto out;
+ /* See if we already have a CRTC for this connector */
+ if (encoder->crtc) {
+ crtc = encoder->crtc;
- if (intel_crtc->plane)
- flip_mask = MI_WAIT_FOR_PLANE_B_FLIP;
- else
- flip_mask = MI_WAIT_FOR_PLANE_A_FLIP;
- OUT_RING(MI_WAIT_FOR_EVENT | flip_mask);
- OUT_RING(MI_NOOP);
- OUT_RING(MI_DISPLAY_FLIP_I915 |
- MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
- OUT_RING(fb->pitches[0]);
- OUT_RING(obj->gtt_offset + offset);
- OUT_RING(MI_NOOP);
+ intel_crtc = to_intel_crtc(crtc);
+ old->dpms_mode = intel_crtc->dpms_mode;
+ old->load_detect_temp = false;
- ADVANCE_LP_RING();
-out:
- return ret;
-}
+ /* Make sure the crtc and connector are running */
+ if (intel_crtc->dpms_mode != DRM_MODE_DPMS_ON) {
+ struct drm_encoder_helper_funcs *encoder_funcs;
+ struct drm_crtc_helper_funcs *crtc_funcs;
-static int intel_gen4_queue_flip(struct drm_device *dev,
- struct drm_crtc *crtc,
- struct drm_framebuffer *fb,
- struct drm_i915_gem_object *obj)
-{
- struct drm_i915_private *dev_priv = dev->dev_private;
- struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
- uint32_t pf, pipesrc;
- int ret;
+ crtc_funcs = crtc->helper_private;
+ crtc_funcs->dpms(crtc, DRM_MODE_DPMS_ON);
- ret = intel_pin_and_fence_fb_obj(dev, obj, LP_RING(dev_priv));
- if (ret)
- goto out;
+ encoder_funcs = encoder->helper_private;
+ encoder_funcs->dpms(encoder, DRM_MODE_DPMS_ON);
+ }
- ret = BEGIN_LP_RING(4);
- if (ret)
- goto out;
+ return true;
+ }
+
+ /* Find an unused one (if possible) */
+ list_for_each_entry(possible_crtc, &dev->mode_config.crtc_list, head) {
+ i++;
+ if (!(encoder->possible_crtcs & (1 << i)))
+ continue;
+ if (!possible_crtc->enabled) {
+ crtc = possible_crtc;
+ break;
+ }
+ }
- /* i965+ uses the linear or tiled offsets from the
- * Display Registers (which do not change across a page-flip)
- * so we need only reprogram the base address.
+ /*
+ * If we didn't find an unused CRTC, don't use any.
*/
- OUT_RING(MI_DISPLAY_FLIP |
- MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
- OUT_RING(fb->pitches[0]);
- OUT_RING(obj->gtt_offset | obj->tiling_mode);
+ if (!crtc) {
+ DRM_DEBUG_KMS("no pipe available for load-detect\n");
+ return false;
+ }
- /* XXX Enabling the panel-fitter across page-flip is so far
- * untested on non-native modes, so ignore it for now.
- * pf = I915_READ(pipe == 0 ? PFA_CTL_1 : PFB_CTL_1) & PF_ENABLE;
- */
- pf = 0;
- pipesrc = I915_READ(PIPESRC(intel_crtc->pipe)) & 0x0fff0fff;
- OUT_RING(pf | pipesrc);
- ADVANCE_LP_RING();
-out:
- return ret;
-}
+ encoder->crtc = crtc;
+ connector->encoder = encoder;
-static int intel_gen6_queue_flip(struct drm_device *dev,
- struct drm_crtc *crtc,
- struct drm_framebuffer *fb,
- struct drm_i915_gem_object *obj)
-{
- struct drm_i915_private *dev_priv = dev->dev_private;
- struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
- uint32_t pf, pipesrc;
- int ret;
+ intel_crtc = to_intel_crtc(crtc);
+ old->dpms_mode = intel_crtc->dpms_mode;
+ old->load_detect_temp = true;
+ old->release_fb = NULL;
- ret = intel_pin_and_fence_fb_obj(dev, obj, LP_RING(dev_priv));
- if (ret)
- goto out;
+ if (!mode)
+ mode = &load_detect_mode;
- ret = BEGIN_LP_RING(4);
- if (ret)
- goto out;
+ old_fb = crtc->fb;
- OUT_RING(MI_DISPLAY_FLIP |
- MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
- OUT_RING(fb->pitches[0] | obj->tiling_mode);
- OUT_RING(obj->gtt_offset);
+ /* We need a framebuffer large enough to accommodate all accesses
+ * that the plane may generate whilst we perform load detection.
+ * We can not rely on the fbcon either being present (we get called
+ * during its initialisation to detect all boot displays, or it may
+ * not even exist) or that it is large enough to satisfy the
+ * requested mode.
+ */
+ crtc->fb = mode_fits_in_fbdev(dev, mode);
+ if (crtc->fb == NULL) {
+ DRM_DEBUG_KMS("creating tmp fb for load-detection\n");
+ crtc->fb = intel_framebuffer_create_for_mode(dev, mode, 24, 32);
+ old->release_fb = crtc->fb;
+ } else
+ DRM_DEBUG_KMS("reusing fbdev for load-detection framebuffer\n");
+ if (IS_ERR(crtc->fb)) {
+ DRM_DEBUG_KMS("failed to allocate framebuffer for load-detection\n");
+ crtc->fb = old_fb;
+ return false;
+ }
- pf = I915_READ(PF_CTL(intel_crtc->pipe)) & PF_ENABLE;
- pipesrc = I915_READ(PIPESRC(intel_crtc->pipe)) & 0x0fff0fff;
- OUT_RING(pf | pipesrc);
- ADVANCE_LP_RING();
-out:
- return ret;
+ if (!drm_crtc_helper_set_mode(crtc, mode, 0, 0, old_fb)) {
+ DRM_DEBUG_KMS("failed to set mode on load-detect pipe\n");
+ if (old->release_fb)
+ old->release_fb->funcs->destroy(old->release_fb);
+ crtc->fb = old_fb;
+ return false;
+ }
+
+ /* let the connector get through one full cycle before testing */
+ intel_wait_for_vblank(dev, intel_crtc->pipe);
+
+ return true;
}
-/*
- * On gen7 we currently use the blit ring because (in early silicon at least)
- * the render ring doesn't give us interrpts for page flip completion, which
- * means clients will hang after the first flip is queued. Fortunately the
- * blit ring generates interrupts properly, so use it instead.
- */
-static int intel_gen7_queue_flip(struct drm_device *dev,
- struct drm_crtc *crtc,
- struct drm_framebuffer *fb,
- struct drm_i915_gem_object *obj)
+void intel_release_load_detect_pipe(struct intel_encoder *intel_encoder,
+ struct drm_connector *connector,
+ struct intel_load_detect_pipe *old)
{
- struct drm_i915_private *dev_priv = dev->dev_private;
- struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
- struct intel_ring_buffer *ring = &dev_priv->ring[BCS];
- int ret;
+ struct drm_encoder *encoder = &intel_encoder->base;
+ struct drm_device *dev = encoder->dev;
+ struct drm_crtc *crtc = encoder->crtc;
+ struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private;
+ struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
- ret = intel_pin_and_fence_fb_obj(dev, obj, ring);
- if (ret)
- goto out;
+ DRM_DEBUG_KMS("[CONNECTOR:%d:%s], [ENCODER:%d:%s]\n",
+ connector->base.id, drm_get_connector_name(connector),
+ encoder->base.id, drm_get_encoder_name(encoder));
- ret = intel_ring_begin(ring, 4);
- if (ret)
- goto out;
+ if (old->load_detect_temp) {
+ connector->encoder = NULL;
+ drm_helper_disable_unused_functions(dev);
- intel_ring_emit(ring, MI_DISPLAY_FLIP_I915 | (intel_crtc->plane << 19));
- intel_ring_emit(ring, (fb->pitches[0] | obj->tiling_mode));
- intel_ring_emit(ring, (obj->gtt_offset));
- intel_ring_emit(ring, (MI_NOOP));
- intel_ring_advance(ring);
-out:
- return ret;
-}
+ if (old->release_fb)
+ old->release_fb->funcs->destroy(old->release_fb);
-static int intel_default_queue_flip(struct drm_device *dev,
- struct drm_crtc *crtc,
- struct drm_framebuffer *fb,
- struct drm_i915_gem_object *obj)
-{
- return -ENODEV;
+ return;
+ }
+
+ /* Switch crtc and encoder back off if necessary */
+ if (old->dpms_mode != DRM_MODE_DPMS_ON) {
+ encoder_funcs->dpms(encoder, old->dpms_mode);
+ crtc_funcs->dpms(crtc, old->dpms_mode);
+ }
}
-static int intel_crtc_page_flip(struct drm_crtc *crtc,
- struct drm_framebuffer *fb,
- struct drm_pending_vblank_event *event)
+/* Returns the clock of the currently programmed mode of the given pipe. */
+static int intel_crtc_clock_get(struct drm_device *dev, struct drm_crtc *crtc)
{
- struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
- struct intel_framebuffer *intel_fb;
- struct drm_i915_gem_object *obj;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
- struct intel_unpin_work *work;
- unsigned long flags;
- int ret;
-
- work = kzalloc(sizeof *work, GFP_KERNEL);
- if (work == NULL)
- return -ENOMEM;
-
- work->event = event;
- work->dev = crtc->dev;
- intel_fb = to_intel_framebuffer(crtc->fb);
- work->old_fb_obj = intel_fb->obj;
- INIT_WORK(&work->work, intel_unpin_work_fn);
-
- ret = drm_vblank_get(dev, intel_crtc->pipe);
- if (ret)
- goto free_work;
+ int pipe = intel_crtc->pipe;
+ u32 dpll = I915_READ(DPLL(pipe));
+ u32 fp;
+ intel_clock_t clock;
- /* We borrow the event spin lock for protecting unpin_work */
- spin_lock_irqsave(&dev->event_lock, flags);
- if (intel_crtc->unpin_work) {
- spin_unlock_irqrestore(&dev->event_lock, flags);
- kfree(work);
- drm_vblank_put(dev, intel_crtc->pipe);
+ if ((dpll & DISPLAY_RATE_SELECT_FPA1) == 0)
+ fp = I915_READ(FP0(pipe));
+ else
+ fp = I915_READ(FP1(pipe));
- DRM_DEBUG_DRIVER("flip queue: crtc already busy\n");
- return -EBUSY;
+ clock.m1 = (fp & FP_M1_DIV_MASK) >> FP_M1_DIV_SHIFT;
+ if (IS_PINEVIEW(dev)) {
+ clock.n = ffs((fp & FP_N_PINEVIEW_DIV_MASK) >> FP_N_DIV_SHIFT) - 1;
+ clock.m2 = (fp & FP_M2_PINEVIEW_DIV_MASK) >> FP_M2_DIV_SHIFT;
+ } else {
+ clock.n = (fp & FP_N_DIV_MASK) >> FP_N_DIV_SHIFT;
+ clock.m2 = (fp & FP_M2_DIV_MASK) >> FP_M2_DIV_SHIFT;
}
- intel_crtc->unpin_work = work;
- spin_unlock_irqrestore(&dev->event_lock, flags);
- intel_fb = to_intel_framebuffer(fb);
- obj = intel_fb->obj;
+ if (!IS_GEN2(dev)) {
+ if (IS_PINEVIEW(dev))
+ clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK_PINEVIEW) >>
+ DPLL_FPA01_P1_POST_DIV_SHIFT_PINEVIEW);
+ else
+ clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK) >>
+ DPLL_FPA01_P1_POST_DIV_SHIFT);
- mutex_lock(&dev->struct_mutex);
+ switch (dpll & DPLL_MODE_MASK) {
+ case DPLLB_MODE_DAC_SERIAL:
+ clock.p2 = dpll & DPLL_DAC_SERIAL_P2_CLOCK_DIV_5 ?
+ 5 : 10;
+ break;
+ case DPLLB_MODE_LVDS:
+ clock.p2 = dpll & DPLLB_LVDS_P2_CLOCK_DIV_7 ?
+ 7 : 14;
+ break;
+ default:
+ DRM_DEBUG_KMS("Unknown DPLL mode %08x in programmed "
+ "mode\n", (int)(dpll & DPLL_MODE_MASK));
+ return 0;
+ }
- /* Reference the objects for the scheduled work. */
- drm_gem_object_reference(&work->old_fb_obj->base);
- drm_gem_object_reference(&obj->base);
+ /* XXX: Handle the 100Mhz refclk */
+ intel_clock(dev, 96000, &clock);
+ } else {
+ bool is_lvds = (pipe == 1) && (I915_READ(LVDS) & LVDS_PORT_EN);
- crtc->fb = fb;
+ if (is_lvds) {
+ clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK_I830_LVDS) >>
+ DPLL_FPA01_P1_POST_DIV_SHIFT);
+ clock.p2 = 14;
- work->pending_flip_obj = obj;
+ if ((dpll & PLL_REF_INPUT_MASK) ==
+ PLLB_REF_INPUT_SPREADSPECTRUMIN) {
+ /* XXX: might not be 66MHz */
+ intel_clock(dev, 66000, &clock);
+ } else
+ intel_clock(dev, 48000, &clock);
+ } else {
+ if (dpll & PLL_P1_DIVIDE_BY_TWO)
+ clock.p1 = 2;
+ else {
+ clock.p1 = ((dpll & DPLL_FPA01_P1_POST_DIV_MASK_I830) >>
+ DPLL_FPA01_P1_POST_DIV_SHIFT) + 2;
+ }
+ if (dpll & PLL_P2_DIVIDE_BY_4)
+ clock.p2 = 4;
+ else
+ clock.p2 = 2;
- work->enable_stall_check = true;
+ intel_clock(dev, 48000, &clock);
+ }
+ }
- /* Block clients from rendering to the new back buffer until
- * the flip occurs and the object is no longer visible.
+ /* XXX: It would be nice to validate the clocks, but we can't reuse
+ * i830PllIsValid() because it relies on the xf86_config connector
+ * configuration being accurate, which it isn't necessarily.
*/
- atomic_add(1 << intel_crtc->plane, &work->old_fb_obj->pending_flip);
-
- ret = dev_priv->display.queue_flip(dev, crtc, fb, obj);
- if (ret)
- goto cleanup_pending;
-
- intel_disable_fbc(dev);
- mutex_unlock(&dev->struct_mutex);
- trace_i915_flip_request(intel_crtc->plane, obj);
+ return clock.dot;
+}
- return 0;
+/** Returns the currently programmed mode of the given pipe. */
+struct drm_display_mode *intel_crtc_mode_get(struct drm_device *dev,
+ struct drm_crtc *crtc)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ int pipe = intel_crtc->pipe;
+ struct drm_display_mode *mode;
+ int htot = I915_READ(HTOTAL(pipe));
+ int hsync = I915_READ(HSYNC(pipe));
+ int vtot = I915_READ(VTOTAL(pipe));
+ int vsync = I915_READ(VSYNC(pipe));
-cleanup_pending:
- atomic_sub(1 << intel_crtc->plane, &work->old_fb_obj->pending_flip);
- drm_gem_object_unreference(&work->old_fb_obj->base);
- drm_gem_object_unreference(&obj->base);
- mutex_unlock(&dev->struct_mutex);
+ mode = kzalloc(sizeof(*mode), GFP_KERNEL);
+ if (!mode)
+ return NULL;
- spin_lock_irqsave(&dev->event_lock, flags);
- intel_crtc->unpin_work = NULL;
- spin_unlock_irqrestore(&dev->event_lock, flags);
+ mode->clock = intel_crtc_clock_get(dev, crtc);
+ mode->hdisplay = (htot & 0xffff) + 1;
+ mode->htotal = ((htot & 0xffff0000) >> 16) + 1;
+ mode->hsync_start = (hsync & 0xffff) + 1;
+ mode->hsync_end = ((hsync & 0xffff0000) >> 16) + 1;
+ mode->vdisplay = (vtot & 0xffff) + 1;
+ mode->vtotal = ((vtot & 0xffff0000) >> 16) + 1;
+ mode->vsync_start = (vsync & 0xffff) + 1;
+ mode->vsync_end = ((vsync & 0xffff0000) >> 16) + 1;
- drm_vblank_put(dev, intel_crtc->pipe);
-free_work:
- kfree(work);
+ drm_mode_set_name(mode);
+ drm_mode_set_crtcinfo(mode, 0);
- return ret;
+ return mode;
}
-static void intel_sanitize_modesetting(struct drm_device *dev,
- int pipe, int plane)
+#define GPU_IDLE_TIMEOUT 500 /* ms */
+
+/* When this timer fires, we've been idle for awhile */
+static void intel_gpu_idle_timer(unsigned long arg)
{
- struct drm_i915_private *dev_priv = dev->dev_private;
- u32 reg, val;
+ struct drm_device *dev = (struct drm_device *)arg;
+ drm_i915_private_t *dev_priv = dev->dev_private;
- /* Clear any frame start delays used for debugging left by the BIOS */
- for_each_pipe(pipe) {
- reg = PIPECONF(pipe);
- I915_WRITE(reg, I915_READ(reg) & ~PIPECONF_FRAME_START_DELAY_MASK);
+ if (!list_empty(&dev_priv->mm.active_list)) {
+ /* Still processing requests, so just re-arm the timer. */
+ mod_timer(&dev_priv->idle_timer, jiffies +
+ msecs_to_jiffies(GPU_IDLE_TIMEOUT));
+ return;
}
- if (HAS_PCH_SPLIT(dev))
- return;
+ dev_priv->busy = false;
+ queue_work(dev_priv->wq, &dev_priv->idle_work);
+}
- /* Who knows what state these registers were left in by the BIOS or
- * grub?
- *
- * If we leave the registers in a conflicting state (e.g. with the
- * display plane reading from the other pipe than the one we intend
- * to use) then when we attempt to teardown the active mode, we will
- * not disable the pipes and planes in the correct order -- leaving
- * a plane reading from a disabled pipe and possibly leading to
- * undefined behaviour.
- */
+#define CRTC_IDLE_TIMEOUT 1000 /* ms */
- reg = DSPCNTR(plane);
- val = I915_READ(reg);
+static void intel_crtc_idle_timer(unsigned long arg)
+{
+ struct intel_crtc *intel_crtc = (struct intel_crtc *)arg;
+ struct drm_crtc *crtc = &intel_crtc->base;
+ drm_i915_private_t *dev_priv = crtc->dev->dev_private;
+ struct intel_framebuffer *intel_fb;
- if ((val & DISPLAY_PLANE_ENABLE) == 0)
- return;
- if (!!(val & DISPPLANE_SEL_PIPE_MASK) == pipe)
+ intel_fb = to_intel_framebuffer(crtc->fb);
+ if (intel_fb && intel_fb->obj->active) {
+ /* The framebuffer is still being accessed by the GPU. */
+ mod_timer(&intel_crtc->idle_timer, jiffies +
+ msecs_to_jiffies(CRTC_IDLE_TIMEOUT));
return;
+ }
- /* This display plane is active and attached to the other CPU pipe. */
- pipe = !pipe;
-
- /* Disable the plane and wait for it to stop reading from the pipe. */
- intel_disable_plane(dev_priv, plane, pipe);
- intel_disable_pipe(dev_priv, pipe);
+ intel_crtc->busy = false;
+ queue_work(dev_priv->wq, &dev_priv->idle_work);
}
-static void intel_crtc_reset(struct drm_crtc *crtc)
+static void intel_increase_pllclock(struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
- struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
-
- /* Reset flags back to the 'unknown' status so that they
- * will be correctly set on the initial modeset.
- */
- intel_crtc->dpms_mode = -1;
-
- /* We need to fix up any BIOS configuration that conflicts with
- * our expectations.
- */
- intel_sanitize_modesetting(dev, intel_crtc->pipe, intel_crtc->plane);
-}
-
-static struct drm_crtc_helper_funcs intel_helper_funcs = {
- .dpms = intel_crtc_dpms,
- .mode_fixup = intel_crtc_mode_fixup,
- .mode_set = intel_crtc_mode_set,
- .mode_set_base = intel_pipe_set_base,
- .mode_set_base_atomic = intel_pipe_set_base_atomic,
- .load_lut = intel_crtc_load_lut,
- .disable = intel_crtc_disable,
-};
-
-static const struct drm_crtc_funcs intel_crtc_funcs = {
- .reset = intel_crtc_reset,
- .cursor_set = intel_crtc_cursor_set,
- .cursor_move = intel_crtc_cursor_move,
- .gamma_set = intel_crtc_gamma_set,
- .set_config = drm_crtc_helper_set_config,
- .destroy = intel_crtc_destroy,
- .page_flip = intel_crtc_page_flip,
-};
-
-static void intel_crtc_init(struct drm_device *dev, int pipe)
-{
drm_i915_private_t *dev_priv = dev->dev_private;
- struct intel_crtc *intel_crtc;
- int i;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ int pipe = intel_crtc->pipe;
+ int dpll_reg = DPLL(pipe);
+ int dpll;
- intel_crtc = kzalloc(sizeof(struct intel_crtc) + (INTELFB_CONN_LIMIT * sizeof(struct drm_connector *)), GFP_KERNEL);
- if (intel_crtc == NULL)
+ if (HAS_PCH_SPLIT(dev))
return;
- drm_crtc_init(dev, &intel_crtc->base, &intel_crtc_funcs);
-
- drm_mode_crtc_set_gamma_size(&intel_crtc->base, 256);
- for (i = 0; i < 256; i++) {
- intel_crtc->lut_r[i] = i;
- intel_crtc->lut_g[i] = i;
- intel_crtc->lut_b[i] = i;
- }
+ if (!dev_priv->lvds_downclock_avail)
+ return;
- /* Swap pipes & planes for FBC on pre-965 */
- intel_crtc->pipe = pipe;
- intel_crtc->plane = pipe;
- if (IS_MOBILE(dev) && IS_GEN3(dev)) {
- DRM_DEBUG_KMS("swapping pipes & planes for FBC\n");
- intel_crtc->plane = !pipe;
- }
+ dpll = I915_READ(dpll_reg);
+ if (!HAS_PIPE_CXSR(dev) && (dpll & DISPLAY_RATE_SELECT_FPA1)) {
+ DRM_DEBUG_DRIVER("upclocking LVDS\n");
- BUG_ON(pipe >= ARRAY_SIZE(dev_priv->plane_to_crtc_mapping) ||
- dev_priv->plane_to_crtc_mapping[intel_crtc->plane] != NULL);
- dev_priv->plane_to_crtc_mapping[intel_crtc->plane] = &intel_crtc->base;
- dev_priv->pipe_to_crtc_mapping[intel_crtc->pipe] = &intel_crtc->base;
+ assert_panel_unlocked(dev_priv, pipe);
- intel_crtc_reset(&intel_crtc->base);
- intel_crtc->active = true; /* force the pipe off on setup_init_config */
- intel_crtc->bpp = 24; /* default for pre-Ironlake */
+ dpll &= ~DISPLAY_RATE_SELECT_FPA1;
+ I915_WRITE(dpll_reg, dpll);
+ intel_wait_for_vblank(dev, pipe);
- if (HAS_PCH_SPLIT(dev)) {
- if (pipe == 2 && IS_IVYBRIDGE(dev))
- intel_crtc->no_pll = true;
- intel_helper_funcs.prepare = ironlake_crtc_prepare;
- intel_helper_funcs.commit = ironlake_crtc_commit;
- } else {
- intel_helper_funcs.prepare = i9xx_crtc_prepare;
- intel_helper_funcs.commit = i9xx_crtc_commit;
+ dpll = I915_READ(dpll_reg);
+ if (dpll & DISPLAY_RATE_SELECT_FPA1)
+ DRM_DEBUG_DRIVER("failed to upclock LVDS!\n");
}
- drm_crtc_helper_add(&intel_crtc->base, &intel_helper_funcs);
-
- intel_crtc->busy = false;
-
- setup_timer(&intel_crtc->idle_timer, intel_crtc_idle_timer,
- (unsigned long)intel_crtc);
+ /* Schedule downclock */
+ mod_timer(&intel_crtc->idle_timer, jiffies +
+ msecs_to_jiffies(CRTC_IDLE_TIMEOUT));
}
-int intel_get_pipe_from_crtc_id(struct drm_device *dev, void *data,
- struct drm_file *file)
+static void intel_decrease_pllclock(struct drm_crtc *crtc)
{
+ struct drm_device *dev = crtc->dev;
drm_i915_private_t *dev_priv = dev->dev_private;
- struct drm_i915_get_pipe_from_crtc_id *pipe_from_crtc_id = data;
- struct drm_mode_object *drmmode_obj;
- struct intel_crtc *crtc;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ int pipe = intel_crtc->pipe;
+ int dpll_reg = DPLL(pipe);
+ int dpll = I915_READ(dpll_reg);
- if (!dev_priv) {
- DRM_ERROR("called with no initialization\n");
- return -EINVAL;
- }
+ if (HAS_PCH_SPLIT(dev))
+ return;
- drmmode_obj = drm_mode_object_find(dev, pipe_from_crtc_id->crtc_id,
- DRM_MODE_OBJECT_CRTC);
+ if (!dev_priv->lvds_downclock_avail)
+ return;
- if (!drmmode_obj) {
- DRM_ERROR("no such CRTC id\n");
- return -EINVAL;
+ /*
+ * Since this is called by a timer, we should never get here in
+ * the manual case.
+ */
+ if (!HAS_PIPE_CXSR(dev) && intel_crtc->lowfreq_avail) {
+ DRM_DEBUG_DRIVER("downclocking LVDS\n");
+
+ assert_panel_unlocked(dev_priv, pipe);
+
+ dpll |= DISPLAY_RATE_SELECT_FPA1;
+ I915_WRITE(dpll_reg, dpll);
+ intel_wait_for_vblank(dev, pipe);
+ dpll = I915_READ(dpll_reg);
+ if (!(dpll & DISPLAY_RATE_SELECT_FPA1))
+ DRM_DEBUG_DRIVER("failed to downclock LVDS!\n");
}
- crtc = to_intel_crtc(obj_to_crtc(drmmode_obj));
- pipe_from_crtc_id->pipe = crtc->pipe;
-
- return 0;
}
-static int intel_encoder_clones(struct drm_device *dev, int type_mask)
+/**
+ * intel_idle_update - adjust clocks for idleness
+ * @work: work struct
+ *
+ * Either the GPU or display (or both) went idle. Check the busy status
+ * here and adjust the CRTC and GPU clocks as necessary.
+ */
+static void intel_idle_update(struct work_struct *work)
{
- struct intel_encoder *encoder;
- int index_mask = 0;
- int entry = 0;
+ drm_i915_private_t *dev_priv = container_of(work, drm_i915_private_t,
+ idle_work);
+ struct drm_device *dev = dev_priv->dev;
+ struct drm_crtc *crtc;
+ struct intel_crtc *intel_crtc;
- list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.head) {
- if (type_mask & encoder->clone_mask)
- index_mask |= (1 << entry);
- entry++;
- }
+ if (!i915_powersave)
+ return;
- return index_mask;
-}
+ mutex_lock(&dev->struct_mutex);
-static bool has_edp_a(struct drm_device *dev)
-{
- struct drm_i915_private *dev_priv = dev->dev_private;
+ i915_update_gfx_val(dev_priv);
- if (!IS_MOBILE(dev))
- return false;
+ list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
+ /* Skip inactive CRTCs */
+ if (!crtc->fb)
+ continue;
- if ((I915_READ(DP_A) & DP_DETECTED) == 0)
- return false;
+ intel_crtc = to_intel_crtc(crtc);
+ if (!intel_crtc->busy)
+ intel_decrease_pllclock(crtc);
+ }
- if (IS_GEN5(dev) &&
- (I915_READ(ILK_DISPLAY_CHICKEN_FUSES) & ILK_eDP_A_DISABLE))
- return false;
- return true;
+ mutex_unlock(&dev->struct_mutex);
}
-static void intel_setup_outputs(struct drm_device *dev)
+/**
+ * intel_mark_busy - mark the GPU and possibly the display busy
+ * @dev: drm device
+ * @obj: object we're operating on
+ *
+ * Callers can use this function to indicate that the GPU is busy processing
+ * commands. If @obj matches one of the CRTC objects (i.e. it's a scanout
+ * buffer), we'll also mark the display as busy, so we know to increase its
+ * clock frequency.
+ */
+void intel_mark_busy(struct drm_device *dev, struct drm_i915_gem_object *obj)
{
- struct drm_i915_private *dev_priv = dev->dev_private;
- struct intel_encoder *encoder;
- bool dpd_is_edp = false;
- bool has_lvds;
+ drm_i915_private_t *dev_priv = dev->dev_private;
+ struct drm_crtc *crtc = NULL;
+ struct intel_framebuffer *intel_fb;
+ struct intel_crtc *intel_crtc;
- has_lvds = intel_lvds_init(dev);
- if (!has_lvds && !HAS_PCH_SPLIT(dev)) {
- /* disable the panel fitter on everything but LVDS */
- I915_WRITE(PFIT_CONTROL, 0);
- }
+ if (!drm_core_check_feature(dev, DRIVER_MODESET))
+ return;
- if (HAS_PCH_SPLIT(dev)) {
- dpd_is_edp = intel_dpd_is_edp(dev);
+ if (!dev_priv->busy)
+ dev_priv->busy = true;
+ else
+ mod_timer(&dev_priv->idle_timer, jiffies +
+ msecs_to_jiffies(GPU_IDLE_TIMEOUT));
- if (has_edp_a(dev))
- intel_dp_init(dev, DP_A);
+ list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
+ if (!crtc->fb)
+ continue;
- if (dpd_is_edp && (I915_READ(PCH_DP_D) & DP_DETECTED))
- intel_dp_init(dev, PCH_DP_D);
+ intel_crtc = to_intel_crtc(crtc);
+ intel_fb = to_intel_framebuffer(crtc->fb);
+ if (intel_fb->obj == obj) {
+ if (!intel_crtc->busy) {
+ /* Non-busy -> busy, upclock */
+ intel_increase_pllclock(crtc);
+ intel_crtc->busy = true;
+ } else {
+ /* Busy -> busy, put off timer */
+ mod_timer(&intel_crtc->idle_timer, jiffies +
+ msecs_to_jiffies(CRTC_IDLE_TIMEOUT));
+ }
+ }
}
+}
- intel_crt_init(dev);
+static void intel_crtc_destroy(struct drm_crtc *crtc)
+{
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ struct drm_device *dev = crtc->dev;
+ struct intel_unpin_work *work;
+ unsigned long flags;
- if (HAS_PCH_SPLIT(dev)) {
- int found;
+ spin_lock_irqsave(&dev->event_lock, flags);
+ work = intel_crtc->unpin_work;
+ intel_crtc->unpin_work = NULL;
+ spin_unlock_irqrestore(&dev->event_lock, flags);
- if (I915_READ(HDMIB) & PORT_DETECTED) {
- /* PCH SDVOB multiplex with HDMIB */
- found = intel_sdvo_init(dev, PCH_SDVOB, true);
- if (!found)
- intel_hdmi_init(dev, HDMIB);
- if (!found && (I915_READ(PCH_DP_B) & DP_DETECTED))
- intel_dp_init(dev, PCH_DP_B);
- }
+ if (work) {
+ cancel_work_sync(&work->work);
+ kfree(work);
+ }
- if (I915_READ(HDMIC) & PORT_DETECTED)
- intel_hdmi_init(dev, HDMIC);
+ drm_crtc_cleanup(crtc);
- if (I915_READ(HDMID) & PORT_DETECTED)
- intel_hdmi_init(dev, HDMID);
+ kfree(intel_crtc);
+}
- if (I915_READ(PCH_DP_C) & DP_DETECTED)
- intel_dp_init(dev, PCH_DP_C);
+static void intel_unpin_work_fn(struct work_struct *__work)
+{
+ struct intel_unpin_work *work =
+ container_of(__work, struct intel_unpin_work, work);
- if (!dpd_is_edp && (I915_READ(PCH_DP_D) & DP_DETECTED))
- intel_dp_init(dev, PCH_DP_D);
+ mutex_lock(&work->dev->struct_mutex);
+ intel_unpin_fb_obj(work->old_fb_obj);
+ drm_gem_object_unreference(&work->pending_flip_obj->base);
+ drm_gem_object_unreference(&work->old_fb_obj->base);
- } else if (SUPPORTS_DIGITAL_OUTPUTS(dev)) {
- bool found = false;
+ intel_update_fbc(work->dev);
+ mutex_unlock(&work->dev->struct_mutex);
+ kfree(work);
+}
- if (I915_READ(SDVOB) & SDVO_DETECTED) {
- DRM_DEBUG_KMS("probing SDVOB\n");
- found = intel_sdvo_init(dev, SDVOB, true);
- if (!found && SUPPORTS_INTEGRATED_HDMI(dev)) {
- DRM_DEBUG_KMS("probing HDMI on SDVOB\n");
- intel_hdmi_init(dev, SDVOB);
- }
+static void do_intel_finish_page_flip(struct drm_device *dev,
+ struct drm_crtc *crtc)
+{
+ drm_i915_private_t *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ struct intel_unpin_work *work;
+ struct drm_i915_gem_object *obj;
+ struct drm_pending_vblank_event *e;
+ struct timeval tnow, tvbl;
+ unsigned long flags;
- if (!found && SUPPORTS_INTEGRATED_DP(dev)) {
- DRM_DEBUG_KMS("probing DP_B\n");
- intel_dp_init(dev, DP_B);
- }
- }
+ /* Ignore early vblank irqs */
+ if (intel_crtc == NULL)
+ return;
- /* Before G4X SDVOC doesn't have its own detect register */
+ do_gettimeofday(&tnow);
- if (I915_READ(SDVOB) & SDVO_DETECTED) {
- DRM_DEBUG_KMS("probing SDVOC\n");
- found = intel_sdvo_init(dev, SDVOC, false);
- }
+ spin_lock_irqsave(&dev->event_lock, flags);
+ work = intel_crtc->unpin_work;
+ if (work == NULL || !work->pending) {
+ spin_unlock_irqrestore(&dev->event_lock, flags);
+ return;
+ }
- if (!found && (I915_READ(SDVOC) & SDVO_DETECTED)) {
+ intel_crtc->unpin_work = NULL;
- if (SUPPORTS_INTEGRATED_HDMI(dev)) {
- DRM_DEBUG_KMS("probing HDMI on SDVOC\n");
- intel_hdmi_init(dev, SDVOC);
- }
- if (SUPPORTS_INTEGRATED_DP(dev)) {
- DRM_DEBUG_KMS("probing DP_C\n");
- intel_dp_init(dev, DP_C);
- }
- }
+ if (work->event) {
+ e = work->event;
+ e->event.sequence = drm_vblank_count_and_time(dev, intel_crtc->pipe, &tvbl);
- if (SUPPORTS_INTEGRATED_DP(dev) &&
- (I915_READ(DP_D) & DP_DETECTED)) {
- DRM_DEBUG_KMS("probing DP_D\n");
- intel_dp_init(dev, DP_D);
+ /* Called before vblank count and timestamps have
+ * been updated for the vblank interval of flip
+ * completion? Need to increment vblank count and
+ * add one videorefresh duration to returned timestamp
+ * to account for this. We assume this happened if we
+ * get called over 0.9 frame durations after the last
+ * timestamped vblank.
+ *
+ * This calculation can not be used with vrefresh rates
+ * below 5Hz (10Hz to be on the safe side) without
+ * promoting to 64 integers.
+ */
+ if (10 * (timeval_to_ns(&tnow) - timeval_to_ns(&tvbl)) >
+ 9 * crtc->framedur_ns) {
+ e->event.sequence++;
+ tvbl = ns_to_timeval(timeval_to_ns(&tvbl) +
+ crtc->framedur_ns);
}
- } else if (IS_GEN2(dev))
- intel_dvo_init(dev);
- if (SUPPORTS_TV(dev))
- intel_tv_init(dev);
+ e->event.tv_sec = tvbl.tv_sec;
+ e->event.tv_usec = tvbl.tv_usec;
- list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.head) {
- encoder->base.possible_crtcs = encoder->crtc_mask;
- encoder->base.possible_clones =
- intel_encoder_clones(dev, encoder->clone_mask);
+ list_add_tail(&e->base.link,
+ &e->base.file_priv->event_list);
+ wake_up_interruptible(&e->base.file_priv->event_wait);
}
- /* disable all the possible outputs/crtcs before entering KMS mode */
- drm_helper_disable_unused_functions(dev);
+ drm_vblank_put(dev, intel_crtc->pipe);
+
+ spin_unlock_irqrestore(&dev->event_lock, flags);
+
+ obj = work->old_fb_obj;
+
+ atomic_clear_mask(1 << intel_crtc->plane,
+ &obj->pending_flip.counter);
+ if (atomic_read(&obj->pending_flip) == 0)
+ wake_up(&dev_priv->pending_flip_queue);
+
+ schedule_work(&work->work);
- if (HAS_PCH_SPLIT(dev))
- ironlake_init_pch_refclk(dev);
+ trace_i915_flip_complete(intel_crtc->plane, work->pending_flip_obj);
}
-static void intel_user_framebuffer_destroy(struct drm_framebuffer *fb)
+void intel_finish_page_flip(struct drm_device *dev, int pipe)
{
- struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
+ drm_i915_private_t *dev_priv = dev->dev_private;
+ struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
- drm_framebuffer_cleanup(fb);
- drm_gem_object_unreference_unlocked(&intel_fb->obj->base);
+ do_intel_finish_page_flip(dev, crtc);
+}
- kfree(intel_fb);
+void intel_finish_page_flip_plane(struct drm_device *dev, int plane)
+{
+ drm_i915_private_t *dev_priv = dev->dev_private;
+ struct drm_crtc *crtc = dev_priv->plane_to_crtc_mapping[plane];
+
+ do_intel_finish_page_flip(dev, crtc);
}
-static int intel_user_framebuffer_create_handle(struct drm_framebuffer *fb,
- struct drm_file *file,
- unsigned int *handle)
+void intel_prepare_page_flip(struct drm_device *dev, int plane)
{
- struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
- struct drm_i915_gem_object *obj = intel_fb->obj;
+ drm_i915_private_t *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc =
+ to_intel_crtc(dev_priv->plane_to_crtc_mapping[plane]);
+ unsigned long flags;
- return drm_gem_handle_create(file, &obj->base, handle);
+ spin_lock_irqsave(&dev->event_lock, flags);
+ if (intel_crtc->unpin_work) {
+ if ((++intel_crtc->unpin_work->pending) > 1)
+ DRM_ERROR("Prepared flip multiple times\n");
+ } else {
+ DRM_DEBUG_DRIVER("preparing flip with no unpin work?\n");
+ }
+ spin_unlock_irqrestore(&dev->event_lock, flags);
}
-static const struct drm_framebuffer_funcs intel_fb_funcs = {
- .destroy = intel_user_framebuffer_destroy,
- .create_handle = intel_user_framebuffer_create_handle,
-};
+static int intel_gen2_queue_flip(struct drm_device *dev,
+ struct drm_crtc *crtc,
+ struct drm_framebuffer *fb,
+ struct drm_i915_gem_object *obj)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ unsigned long offset;
+ u32 flip_mask;
+ int ret;
-int intel_framebuffer_init(struct drm_device *dev,
- struct intel_framebuffer *intel_fb,
- struct drm_mode_fb_cmd2 *mode_cmd,
- struct drm_i915_gem_object *obj)
+ ret = intel_pin_and_fence_fb_obj(dev, obj, LP_RING(dev_priv));
+ if (ret)
+ goto out;
+
+ /* Offset into the new buffer for cases of shared fbs between CRTCs */
+ offset = crtc->y * fb->pitches[0] + crtc->x * fb->bits_per_pixel/8;
+
+ ret = BEGIN_LP_RING(6);
+ if (ret)
+ goto out;
+
+ /* Can't queue multiple flips, so wait for the previous
+ * one to finish before executing the next.
+ */
+ if (intel_crtc->plane)
+ flip_mask = MI_WAIT_FOR_PLANE_B_FLIP;
+ else
+ flip_mask = MI_WAIT_FOR_PLANE_A_FLIP;
+ OUT_RING(MI_WAIT_FOR_EVENT | flip_mask);
+ OUT_RING(MI_NOOP);
+ OUT_RING(MI_DISPLAY_FLIP |
+ MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
+ OUT_RING(fb->pitches[0]);
+ OUT_RING(obj->gtt_offset + offset);
+ OUT_RING(0); /* aux display base address, unused */
+ ADVANCE_LP_RING();
+out:
+ return ret;
+}
+
+static int intel_gen3_queue_flip(struct drm_device *dev,
+ struct drm_crtc *crtc,
+ struct drm_framebuffer *fb,
+ struct drm_i915_gem_object *obj)
{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ unsigned long offset;
+ u32 flip_mask;
int ret;
- if (obj->tiling_mode == I915_TILING_Y)
- return -EINVAL;
+ ret = intel_pin_and_fence_fb_obj(dev, obj, LP_RING(dev_priv));
+ if (ret)
+ goto out;
- if (mode_cmd->pitches[0] & 63)
- return -EINVAL;
+ /* Offset into the new buffer for cases of shared fbs between CRTCs */
+ offset = crtc->y * fb->pitches[0] + crtc->x * fb->bits_per_pixel/8;
- switch (mode_cmd->pixel_format) {
- case DRM_FORMAT_RGB332:
- case DRM_FORMAT_RGB565:
- case DRM_FORMAT_XRGB8888:
- case DRM_FORMAT_XBGR8888:
- case DRM_FORMAT_ARGB8888:
- case DRM_FORMAT_XRGB2101010:
- case DRM_FORMAT_ARGB2101010:
- /* RGB formats are common across chipsets */
- break;
- case DRM_FORMAT_YUYV:
- case DRM_FORMAT_UYVY:
- case DRM_FORMAT_YVYU:
- case DRM_FORMAT_VYUY:
- break;
- default:
- DRM_DEBUG_KMS("unsupported pixel format %u\n",
- mode_cmd->pixel_format);
- return -EINVAL;
- }
+ ret = BEGIN_LP_RING(6);
+ if (ret)
+ goto out;
- ret = drm_framebuffer_init(dev, &intel_fb->base, &intel_fb_funcs);
- if (ret) {
- DRM_ERROR("framebuffer init failed %d\n", ret);
- return ret;
- }
+ if (intel_crtc->plane)
+ flip_mask = MI_WAIT_FOR_PLANE_B_FLIP;
+ else
+ flip_mask = MI_WAIT_FOR_PLANE_A_FLIP;
+ OUT_RING(MI_WAIT_FOR_EVENT | flip_mask);
+ OUT_RING(MI_NOOP);
+ OUT_RING(MI_DISPLAY_FLIP_I915 |
+ MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
+ OUT_RING(fb->pitches[0]);
+ OUT_RING(obj->gtt_offset + offset);
+ OUT_RING(MI_NOOP);
- drm_helper_mode_fill_fb_struct(&intel_fb->base, mode_cmd);
- intel_fb->obj = obj;
- return 0;
+ ADVANCE_LP_RING();
+out:
+ return ret;
}
-static struct drm_framebuffer *
-intel_user_framebuffer_create(struct drm_device *dev,
- struct drm_file *filp,
- struct drm_mode_fb_cmd2 *mode_cmd)
+static int intel_gen4_queue_flip(struct drm_device *dev,
+ struct drm_crtc *crtc,
+ struct drm_framebuffer *fb,
+ struct drm_i915_gem_object *obj)
{
- struct drm_i915_gem_object *obj;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ uint32_t pf, pipesrc;
+ int ret;
- obj = to_intel_bo(drm_gem_object_lookup(dev, filp,
- mode_cmd->handles[0]));
- if (&obj->base == NULL)
- return ERR_PTR(-ENOENT);
+ ret = intel_pin_and_fence_fb_obj(dev, obj, LP_RING(dev_priv));
+ if (ret)
+ goto out;
- return intel_framebuffer_create(dev, mode_cmd, obj);
-}
+ ret = BEGIN_LP_RING(4);
+ if (ret)
+ goto out;
-static const struct drm_mode_config_funcs intel_mode_funcs = {
- .fb_create = intel_user_framebuffer_create,
- .output_poll_changed = intel_fb_output_poll_changed,
-};
+ /* i965+ uses the linear or tiled offsets from the
+ * Display Registers (which do not change across a page-flip)
+ * so we need only reprogram the base address.
+ */
+ OUT_RING(MI_DISPLAY_FLIP |
+ MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
+ OUT_RING(fb->pitches[0]);
+ OUT_RING(obj->gtt_offset | obj->tiling_mode);
+
+ /* XXX Enabling the panel-fitter across page-flip is so far
+ * untested on non-native modes, so ignore it for now.
+ * pf = I915_READ(pipe == 0 ? PFA_CTL_1 : PFB_CTL_1) & PF_ENABLE;
+ */
+ pf = 0;
+ pipesrc = I915_READ(PIPESRC(intel_crtc->pipe)) & 0x0fff0fff;
+ OUT_RING(pf | pipesrc);
+ ADVANCE_LP_RING();
+out:
+ return ret;
+}
-static struct drm_i915_gem_object *
-intel_alloc_context_page(struct drm_device *dev)
+static int intel_gen6_queue_flip(struct drm_device *dev,
+ struct drm_crtc *crtc,
+ struct drm_framebuffer *fb,
+ struct drm_i915_gem_object *obj)
{
- struct drm_i915_gem_object *ctx;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ uint32_t pf, pipesrc;
int ret;
- WARN_ON(!mutex_is_locked(&dev->struct_mutex));
+ ret = intel_pin_and_fence_fb_obj(dev, obj, LP_RING(dev_priv));
+ if (ret)
+ goto out;
- ctx = i915_gem_alloc_object(dev, 4096);
- if (!ctx) {
- DRM_DEBUG("failed to alloc power context, RC6 disabled\n");
- return NULL;
- }
+ ret = BEGIN_LP_RING(4);
+ if (ret)
+ goto out;
- ret = i915_gem_object_pin(ctx, 4096, true);
- if (ret) {
- DRM_ERROR("failed to pin power context: %d\n", ret);
- goto err_unref;
- }
+ OUT_RING(MI_DISPLAY_FLIP |
+ MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
+ OUT_RING(fb->pitches[0] | obj->tiling_mode);
+ OUT_RING(obj->gtt_offset);
- ret = i915_gem_object_set_to_gtt_domain(ctx, 1);
- if (ret) {
- DRM_ERROR("failed to set-domain on power context: %d\n", ret);
- goto err_unpin;
- }
+ pf = I915_READ(PF_CTL(intel_crtc->pipe)) & PF_ENABLE;
+ pipesrc = I915_READ(PIPESRC(intel_crtc->pipe)) & 0x0fff0fff;
+ OUT_RING(pf | pipesrc);
+ ADVANCE_LP_RING();
+out:
+ return ret;
+}
+
+/*
+ * On gen7 we currently use the blit ring because (in early silicon at least)
+ * the render ring doesn't give us interrpts for page flip completion, which
+ * means clients will hang after the first flip is queued. Fortunately the
+ * blit ring generates interrupts properly, so use it instead.
+ */
+static int intel_gen7_queue_flip(struct drm_device *dev,
+ struct drm_crtc *crtc,
+ struct drm_framebuffer *fb,
+ struct drm_i915_gem_object *obj)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ struct intel_ring_buffer *ring = &dev_priv->ring[BCS];
+ int ret;
- return ctx;
+ ret = intel_pin_and_fence_fb_obj(dev, obj, ring);
+ if (ret)
+ goto out;
-err_unpin:
- i915_gem_object_unpin(ctx);
-err_unref:
- drm_gem_object_unreference(&ctx->base);
- mutex_unlock(&dev->struct_mutex);
- return NULL;
+ ret = intel_ring_begin(ring, 4);
+ if (ret)
+ goto out;
+
+ intel_ring_emit(ring, MI_DISPLAY_FLIP_I915 | (intel_crtc->plane << 19));
+ intel_ring_emit(ring, (fb->pitches[0] | obj->tiling_mode));
+ intel_ring_emit(ring, (obj->gtt_offset));
+ intel_ring_emit(ring, (MI_NOOP));
+ intel_ring_advance(ring);
+out:
+ return ret;
}
-bool ironlake_set_drps(struct drm_device *dev, u8 val)
+static int intel_default_queue_flip(struct drm_device *dev,
+ struct drm_crtc *crtc,
+ struct drm_framebuffer *fb,
+ struct drm_i915_gem_object *obj)
{
- struct drm_i915_private *dev_priv = dev->dev_private;
- u16 rgvswctl;
-
- rgvswctl = I915_READ16(MEMSWCTL);
- if (rgvswctl & MEMCTL_CMD_STS) {
- DRM_DEBUG("gpu busy, RCS change rejected\n");
- return false; /* still busy with another command */
- }
-
- rgvswctl = (MEMCTL_CMD_CHFREQ << MEMCTL_CMD_SHIFT) |
- (val << MEMCTL_FREQ_SHIFT) | MEMCTL_SFCAVM;
- I915_WRITE16(MEMSWCTL, rgvswctl);
- POSTING_READ16(MEMSWCTL);
-
- rgvswctl |= MEMCTL_CMD_STS;
- I915_WRITE16(MEMSWCTL, rgvswctl);
-
- return true;
+ return -ENODEV;
}
-void ironlake_enable_drps(struct drm_device *dev)
+static int intel_crtc_page_flip(struct drm_crtc *crtc,
+ struct drm_framebuffer *fb,
+ struct drm_pending_vblank_event *event)
{
+ struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
- u32 rgvmodectl = I915_READ(MEMMODECTL);
- u8 fmax, fmin, fstart, vstart;
-
- /* Enable temp reporting */
- I915_WRITE16(PMMISC, I915_READ(PMMISC) | MCPPCE_EN);
- I915_WRITE16(TSC1, I915_READ(TSC1) | TSE);
-
- /* 100ms RC evaluation intervals */
- I915_WRITE(RCUPEI, 100000);
- I915_WRITE(RCDNEI, 100000);
-
- /* Set max/min thresholds to 90ms and 80ms respectively */
- I915_WRITE(RCBMAXAVG, 90000);
- I915_WRITE(RCBMINAVG, 80000);
-
- I915_WRITE(MEMIHYST, 1);
-
- /* Set up min, max, and cur for interrupt handling */
- fmax = (rgvmodectl & MEMMODE_FMAX_MASK) >> MEMMODE_FMAX_SHIFT;
- fmin = (rgvmodectl & MEMMODE_FMIN_MASK);
- fstart = (rgvmodectl & MEMMODE_FSTART_MASK) >>
- MEMMODE_FSTART_SHIFT;
-
- vstart = (I915_READ(PXVFREQ_BASE + (fstart * 4)) & PXVFREQ_PX_MASK) >>
- PXVFREQ_PX_SHIFT;
-
- dev_priv->fmax = fmax; /* IPS callback will increase this */
- dev_priv->fstart = fstart;
-
- dev_priv->max_delay = fstart;
- dev_priv->min_delay = fmin;
- dev_priv->cur_delay = fstart;
-
- DRM_DEBUG_DRIVER("fmax: %d, fmin: %d, fstart: %d\n",
- fmax, fmin, fstart);
-
- I915_WRITE(MEMINTREN, MEMINT_CX_SUPR_EN | MEMINT_EVAL_CHG_EN);
+ struct intel_framebuffer *intel_fb;
+ struct drm_i915_gem_object *obj;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ struct intel_unpin_work *work;
+ unsigned long flags;
+ int ret;
- /*
- * Interrupts will be enabled in ironlake_irq_postinstall
- */
+ work = kzalloc(sizeof *work, GFP_KERNEL);
+ if (work == NULL)
+ return -ENOMEM;
- I915_WRITE(VIDSTART, vstart);
- POSTING_READ(VIDSTART);
+ work->event = event;
+ work->dev = crtc->dev;
+ intel_fb = to_intel_framebuffer(crtc->fb);
+ work->old_fb_obj = intel_fb->obj;
+ INIT_WORK(&work->work, intel_unpin_work_fn);
- rgvmodectl |= MEMMODE_SWMODE_EN;
- I915_WRITE(MEMMODECTL, rgvmodectl);
+ ret = drm_vblank_get(dev, intel_crtc->pipe);
+ if (ret)
+ goto free_work;
- if (wait_for((I915_READ(MEMSWCTL) & MEMCTL_CMD_STS) == 0, 10))
- DRM_ERROR("stuck trying to change perf mode\n");
- msleep(1);
+ /* We borrow the event spin lock for protecting unpin_work */
+ spin_lock_irqsave(&dev->event_lock, flags);
+ if (intel_crtc->unpin_work) {
+ spin_unlock_irqrestore(&dev->event_lock, flags);
+ kfree(work);
+ drm_vblank_put(dev, intel_crtc->pipe);
- ironlake_set_drps(dev, fstart);
+ DRM_DEBUG_DRIVER("flip queue: crtc already busy\n");
+ return -EBUSY;
+ }
+ intel_crtc->unpin_work = work;
+ spin_unlock_irqrestore(&dev->event_lock, flags);
- dev_priv->last_count1 = I915_READ(0x112e4) + I915_READ(0x112e8) +
- I915_READ(0x112e0);
- dev_priv->last_time1 = jiffies_to_msecs(jiffies);
- dev_priv->last_count2 = I915_READ(0x112f4);
- getrawmonotonic(&dev_priv->last_time2);
-}
+ intel_fb = to_intel_framebuffer(fb);
+ obj = intel_fb->obj;
-void ironlake_disable_drps(struct drm_device *dev)
-{
- struct drm_i915_private *dev_priv = dev->dev_private;
- u16 rgvswctl = I915_READ16(MEMSWCTL);
+ mutex_lock(&dev->struct_mutex);
- /* Ack interrupts, disable EFC interrupt */
- I915_WRITE(MEMINTREN, I915_READ(MEMINTREN) & ~MEMINT_EVAL_CHG_EN);
- I915_WRITE(MEMINTRSTS, MEMINT_EVAL_CHG);
- I915_WRITE(DEIER, I915_READ(DEIER) & ~DE_PCU_EVENT);
- I915_WRITE(DEIIR, DE_PCU_EVENT);
- I915_WRITE(DEIMR, I915_READ(DEIMR) | DE_PCU_EVENT);
+ /* Reference the objects for the scheduled work. */
+ drm_gem_object_reference(&work->old_fb_obj->base);
+ drm_gem_object_reference(&obj->base);
- /* Go back to the starting frequency */
- ironlake_set_drps(dev, dev_priv->fstart);
- msleep(1);
- rgvswctl |= MEMCTL_CMD_STS;
- I915_WRITE(MEMSWCTL, rgvswctl);
- msleep(1);
+ crtc->fb = fb;
-}
+ work->pending_flip_obj = obj;
-void gen6_set_rps(struct drm_device *dev, u8 val)
-{
- struct drm_i915_private *dev_priv = dev->dev_private;
- u32 swreq;
+ work->enable_stall_check = true;
- swreq = (val & 0x3ff) << 25;
- I915_WRITE(GEN6_RPNSWREQ, swreq);
-}
+ /* Block clients from rendering to the new back buffer until
+ * the flip occurs and the object is no longer visible.
+ */
+ atomic_add(1 << intel_crtc->plane, &work->old_fb_obj->pending_flip);
-void gen6_disable_rps(struct drm_device *dev)
-{
- struct drm_i915_private *dev_priv = dev->dev_private;
+ ret = dev_priv->display.queue_flip(dev, crtc, fb, obj);
+ if (ret)
+ goto cleanup_pending;
- I915_WRITE(GEN6_RPNSWREQ, 1 << 31);
- I915_WRITE(GEN6_PMINTRMSK, 0xffffffff);
- I915_WRITE(GEN6_PMIER, 0);
- /* Complete PM interrupt masking here doesn't race with the rps work
- * item again unmasking PM interrupts because that is using a different
- * register (PMIMR) to mask PM interrupts. The only risk is in leaving
- * stale bits in PMIIR and PMIMR which gen6_enable_rps will clean up. */
+ intel_disable_fbc(dev);
+ mutex_unlock(&dev->struct_mutex);
- spin_lock_irq(&dev_priv->rps_lock);
- dev_priv->pm_iir = 0;
- spin_unlock_irq(&dev_priv->rps_lock);
+ trace_i915_flip_request(intel_crtc->plane, obj);
- I915_WRITE(GEN6_PMIIR, I915_READ(GEN6_PMIIR));
-}
+ return 0;
-static unsigned long intel_pxfreq(u32 vidfreq)
-{
- unsigned long freq;
- int div = (vidfreq & 0x3f0000) >> 16;
- int post = (vidfreq & 0x3000) >> 12;
- int pre = (vidfreq & 0x7);
+cleanup_pending:
+ atomic_sub(1 << intel_crtc->plane, &work->old_fb_obj->pending_flip);
+ drm_gem_object_unreference(&work->old_fb_obj->base);
+ drm_gem_object_unreference(&obj->base);
+ mutex_unlock(&dev->struct_mutex);
- if (!pre)
- return 0;
+ spin_lock_irqsave(&dev->event_lock, flags);
+ intel_crtc->unpin_work = NULL;
+ spin_unlock_irqrestore(&dev->event_lock, flags);
- freq = ((div * 133333) / ((1<<post) * pre));
+ drm_vblank_put(dev, intel_crtc->pipe);
+free_work:
+ kfree(work);
- return freq;
+ return ret;
}
-void intel_init_emon(struct drm_device *dev)
+static void intel_sanitize_modesetting(struct drm_device *dev,
+ int pipe, int plane)
{
struct drm_i915_private *dev_priv = dev->dev_private;
- u32 lcfuse;
- u8 pxw[16];
- int i;
-
- /* Disable to program */
- I915_WRITE(ECR, 0);
- POSTING_READ(ECR);
-
- /* Program energy weights for various events */
- I915_WRITE(SDEW, 0x15040d00);
- I915_WRITE(CSIEW0, 0x007f0000);
- I915_WRITE(CSIEW1, 0x1e220004);
- I915_WRITE(CSIEW2, 0x04000004);
-
- for (i = 0; i < 5; i++)
- I915_WRITE(PEW + (i * 4), 0);
- for (i = 0; i < 3; i++)
- I915_WRITE(DEW + (i * 4), 0);
-
- /* Program P-state weights to account for frequency power adjustment */
- for (i = 0; i < 16; i++) {
- u32 pxvidfreq = I915_READ(PXVFREQ_BASE + (i * 4));
- unsigned long freq = intel_pxfreq(pxvidfreq);
- unsigned long vid = (pxvidfreq & PXVFREQ_PX_MASK) >>
- PXVFREQ_PX_SHIFT;
- unsigned long val;
-
- val = vid * vid;
- val *= (freq / 1000);
- val *= 255;
- val /= (127*127*900);
- if (val > 0xff)
- DRM_ERROR("bad pxval: %ld\n", val);
- pxw[i] = val;
- }
- /* Render standby states get 0 weight */
- pxw[14] = 0;
- pxw[15] = 0;
+ u32 reg, val;
- for (i = 0; i < 4; i++) {
- u32 val = (pxw[i*4] << 24) | (pxw[(i*4)+1] << 16) |
- (pxw[(i*4)+2] << 8) | (pxw[(i*4)+3]);
- I915_WRITE(PXW + (i * 4), val);
+ /* Clear any frame start delays used for debugging left by the BIOS */
+ for_each_pipe(pipe) {
+ reg = PIPECONF(pipe);
+ I915_WRITE(reg, I915_READ(reg) & ~PIPECONF_FRAME_START_DELAY_MASK);
}
- /* Adjust magic regs to magic values (more experimental results) */
- I915_WRITE(OGW0, 0);
- I915_WRITE(OGW1, 0);
- I915_WRITE(EG0, 0x00007f00);
- I915_WRITE(EG1, 0x0000000e);
- I915_WRITE(EG2, 0x000e0000);
- I915_WRITE(EG3, 0x68000300);
- I915_WRITE(EG4, 0x42000000);
- I915_WRITE(EG5, 0x00140031);
- I915_WRITE(EG6, 0);
- I915_WRITE(EG7, 0);
-
- for (i = 0; i < 8; i++)
- I915_WRITE(PXWL + (i * 4), 0);
-
- /* Enable PMON + select events */
- I915_WRITE(ECR, 0x80000019);
+ if (HAS_PCH_SPLIT(dev))
+ return;
- lcfuse = I915_READ(LCFUSE02);
+ /* Who knows what state these registers were left in by the BIOS or
+ * grub?
+ *
+ * If we leave the registers in a conflicting state (e.g. with the
+ * display plane reading from the other pipe than the one we intend
+ * to use) then when we attempt to teardown the active mode, we will
+ * not disable the pipes and planes in the correct order -- leaving
+ * a plane reading from a disabled pipe and possibly leading to
+ * undefined behaviour.
+ */
- dev_priv->corr = (lcfuse & LCFUSE_HIV_MASK);
-}
+ reg = DSPCNTR(plane);
+ val = I915_READ(reg);
-int intel_enable_rc6(const struct drm_device *dev)
-{
- /*
- * Respect the kernel parameter if it is set
- */
- if (i915_enable_rc6 >= 0)
- return i915_enable_rc6;
+ if ((val & DISPLAY_PLANE_ENABLE) == 0)
+ return;
+ if (!!(val & DISPPLANE_SEL_PIPE_MASK) == pipe)
+ return;
- /*
- * Disable RC6 on Ironlake
- */
- if (INTEL_INFO(dev)->gen == 5)
- return 0;
+ /* This display plane is active and attached to the other CPU pipe. */
+ pipe = !pipe;
- /*
- * Disable rc6 on Sandybridge
- */
- if (INTEL_INFO(dev)->gen == 6) {
- DRM_DEBUG_DRIVER("Sandybridge: deep RC6 disabled\n");
- return INTEL_RC6_ENABLE;
- }
- DRM_DEBUG_DRIVER("RC6 and deep RC6 enabled\n");
- return (INTEL_RC6_ENABLE | INTEL_RC6p_ENABLE);
+ /* Disable the plane and wait for it to stop reading from the pipe. */
+ intel_disable_plane(dev_priv, plane, pipe);
+ intel_disable_pipe(dev_priv, pipe);
}
-void gen6_enable_rps(struct drm_i915_private *dev_priv)
+static void intel_crtc_reset(struct drm_crtc *crtc)
{
- u32 rp_state_cap = I915_READ(GEN6_RP_STATE_CAP);
- u32 gt_perf_status = I915_READ(GEN6_GT_PERF_STATUS);
- u32 pcu_mbox, rc6_mask = 0;
- u32 gtfifodbg;
- int cur_freq, min_freq, max_freq;
- int rc6_mode;
- int i;
+ struct drm_device *dev = crtc->dev;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
- /* Here begins a magic sequence of register writes to enable
- * auto-downclocking.
- *
- * Perhaps there might be some value in exposing these to
- * userspace...
- */
- I915_WRITE(GEN6_RC_STATE, 0);
- mutex_lock(&dev_priv->dev->struct_mutex);
-
- /* Clear the DBG now so we don't confuse earlier errors */
- if ((gtfifodbg = I915_READ(GTFIFODBG))) {
- DRM_ERROR("GT fifo had a previous error %x\n", gtfifodbg);
- I915_WRITE(GTFIFODBG, gtfifodbg);
- }
-
- gen6_gt_force_wake_get(dev_priv);
-
- /* disable the counters and set deterministic thresholds */
- I915_WRITE(GEN6_RC_CONTROL, 0);
-
- I915_WRITE(GEN6_RC1_WAKE_RATE_LIMIT, 1000 << 16);
- I915_WRITE(GEN6_RC6_WAKE_RATE_LIMIT, 40 << 16 | 30);
- I915_WRITE(GEN6_RC6pp_WAKE_RATE_LIMIT, 30);
- I915_WRITE(GEN6_RC_EVALUATION_INTERVAL, 125000);
- I915_WRITE(GEN6_RC_IDLE_HYSTERSIS, 25);
-
- for (i = 0; i < I915_NUM_RINGS; i++)
- I915_WRITE(RING_MAX_IDLE(dev_priv->ring[i].mmio_base), 10);
-
- I915_WRITE(GEN6_RC_SLEEP, 0);
- I915_WRITE(GEN6_RC1e_THRESHOLD, 1000);
- I915_WRITE(GEN6_RC6_THRESHOLD, 50000);
- I915_WRITE(GEN6_RC6p_THRESHOLD, 100000);
- I915_WRITE(GEN6_RC6pp_THRESHOLD, 64000); /* unused */
-
- rc6_mode = intel_enable_rc6(dev_priv->dev);
- if (rc6_mode & INTEL_RC6_ENABLE)
- rc6_mask |= GEN6_RC_CTL_RC6_ENABLE;
-
- if (rc6_mode & INTEL_RC6p_ENABLE)
- rc6_mask |= GEN6_RC_CTL_RC6p_ENABLE;
-
- if (rc6_mode & INTEL_RC6pp_ENABLE)
- rc6_mask |= GEN6_RC_CTL_RC6pp_ENABLE;
-
- DRM_INFO("Enabling RC6 states: RC6 %s, RC6p %s, RC6pp %s\n",
- (rc6_mode & INTEL_RC6_ENABLE) ? "on" : "off",
- (rc6_mode & INTEL_RC6p_ENABLE) ? "on" : "off",
- (rc6_mode & INTEL_RC6pp_ENABLE) ? "on" : "off");
-
- I915_WRITE(GEN6_RC_CONTROL,
- rc6_mask |
- GEN6_RC_CTL_EI_MODE(1) |
- GEN6_RC_CTL_HW_ENABLE);
-
- I915_WRITE(GEN6_RPNSWREQ,
- GEN6_FREQUENCY(10) |
- GEN6_OFFSET(0) |
- GEN6_AGGRESSIVE_TURBO);
- I915_WRITE(GEN6_RC_VIDEO_FREQ,
- GEN6_FREQUENCY(12));
-
- I915_WRITE(GEN6_RP_DOWN_TIMEOUT, 1000000);
- I915_WRITE(GEN6_RP_INTERRUPT_LIMITS,
- 18 << 24 |
- 6 << 16);
- I915_WRITE(GEN6_RP_UP_THRESHOLD, 10000);
- I915_WRITE(GEN6_RP_DOWN_THRESHOLD, 1000000);
- I915_WRITE(GEN6_RP_UP_EI, 100000);
- I915_WRITE(GEN6_RP_DOWN_EI, 5000000);
- I915_WRITE(GEN6_RP_IDLE_HYSTERSIS, 10);
- I915_WRITE(GEN6_RP_CONTROL,
- GEN6_RP_MEDIA_TURBO |
- GEN6_RP_MEDIA_HW_MODE |
- GEN6_RP_MEDIA_IS_GFX |
- GEN6_RP_ENABLE |
- GEN6_RP_UP_BUSY_AVG |
- GEN6_RP_DOWN_IDLE_CONT);
-
- if (wait_for((I915_READ(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) == 0,
- 500))
- DRM_ERROR("timeout waiting for pcode mailbox to become idle\n");
-
- I915_WRITE(GEN6_PCODE_DATA, 0);
- I915_WRITE(GEN6_PCODE_MAILBOX,
- GEN6_PCODE_READY |
- GEN6_PCODE_WRITE_MIN_FREQ_TABLE);
- if (wait_for((I915_READ(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) == 0,
- 500))
- DRM_ERROR("timeout waiting for pcode mailbox to finish\n");
-
- min_freq = (rp_state_cap & 0xff0000) >> 16;
- max_freq = rp_state_cap & 0xff;
- cur_freq = (gt_perf_status & 0xff00) >> 8;
-
- /* Check for overclock support */
- if (wait_for((I915_READ(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) == 0,
- 500))
- DRM_ERROR("timeout waiting for pcode mailbox to become idle\n");
- I915_WRITE(GEN6_PCODE_MAILBOX, GEN6_READ_OC_PARAMS);
- pcu_mbox = I915_READ(GEN6_PCODE_DATA);
- if (wait_for((I915_READ(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) == 0,
- 500))
- DRM_ERROR("timeout waiting for pcode mailbox to finish\n");
- if (pcu_mbox & (1<<31)) { /* OC supported */
- max_freq = pcu_mbox & 0xff;
- DRM_DEBUG_DRIVER("overclocking supported, adjusting frequency max to %dMHz\n", pcu_mbox * 50);
- }
-
- /* In units of 100MHz */
- dev_priv->max_delay = max_freq;
- dev_priv->min_delay = min_freq;
- dev_priv->cur_delay = cur_freq;
-
- /* requires MSI enabled */
- I915_WRITE(GEN6_PMIER,
- GEN6_PM_MBOX_EVENT |
- GEN6_PM_THERMAL_EVENT |
- GEN6_PM_RP_DOWN_TIMEOUT |
- GEN6_PM_RP_UP_THRESHOLD |
- GEN6_PM_RP_DOWN_THRESHOLD |
- GEN6_PM_RP_UP_EI_EXPIRED |
- GEN6_PM_RP_DOWN_EI_EXPIRED);
- spin_lock_irq(&dev_priv->rps_lock);
- WARN_ON(dev_priv->pm_iir != 0);
- I915_WRITE(GEN6_PMIMR, 0);
- spin_unlock_irq(&dev_priv->rps_lock);
- /* enable all PM interrupts */
- I915_WRITE(GEN6_PMINTRMSK, 0);
-
- gen6_gt_force_wake_put(dev_priv);
- mutex_unlock(&dev_priv->dev->struct_mutex);
-}
-
-void gen6_update_ring_freq(struct drm_i915_private *dev_priv)
-{
- int min_freq = 15;
- int gpu_freq, ia_freq, max_ia_freq;
- int scaling_factor = 180;
-
- max_ia_freq = cpufreq_quick_get_max(0);
- /*
- * Default to measured freq if none found, PCU will ensure we don't go
- * over
+ /* Reset flags back to the 'unknown' status so that they
+ * will be correctly set on the initial modeset.
*/
- if (!max_ia_freq)
- max_ia_freq = tsc_khz;
-
- /* Convert from kHz to MHz */
- max_ia_freq /= 1000;
-
- mutex_lock(&dev_priv->dev->struct_mutex);
+ intel_crtc->dpms_mode = -1;
- /*
- * For each potential GPU frequency, load a ring frequency we'd like
- * to use for memory access. We do this by specifying the IA frequency
- * the PCU should use as a reference to determine the ring frequency.
+ /* We need to fix up any BIOS configuration that conflicts with
+ * our expectations.
*/
- for (gpu_freq = dev_priv->max_delay; gpu_freq >= dev_priv->min_delay;
- gpu_freq--) {
- int diff = dev_priv->max_delay - gpu_freq;
-
- /*
- * For GPU frequencies less than 750MHz, just use the lowest
- * ring freq.
- */
- if (gpu_freq < min_freq)
- ia_freq = 800;
- else
- ia_freq = max_ia_freq - ((diff * scaling_factor) / 2);
- ia_freq = DIV_ROUND_CLOSEST(ia_freq, 100);
-
- I915_WRITE(GEN6_PCODE_DATA,
- (ia_freq << GEN6_PCODE_FREQ_IA_RATIO_SHIFT) |
- gpu_freq);
- I915_WRITE(GEN6_PCODE_MAILBOX, GEN6_PCODE_READY |
- GEN6_PCODE_WRITE_MIN_FREQ_TABLE);
- if (wait_for((I915_READ(GEN6_PCODE_MAILBOX) &
- GEN6_PCODE_READY) == 0, 10)) {
- DRM_ERROR("pcode write of freq table timed out\n");
- continue;
- }
- }
-
- mutex_unlock(&dev_priv->dev->struct_mutex);
+ intel_sanitize_modesetting(dev, intel_crtc->pipe, intel_crtc->plane);
}
-static void ironlake_init_clock_gating(struct drm_device *dev)
-{
- struct drm_i915_private *dev_priv = dev->dev_private;
- uint32_t dspclk_gate = VRHUNIT_CLOCK_GATE_DISABLE;
+static struct drm_crtc_helper_funcs intel_helper_funcs = {
+ .dpms = intel_crtc_dpms,
+ .mode_fixup = intel_crtc_mode_fixup,
+ .mode_set = intel_crtc_mode_set,
+ .mode_set_base = intel_pipe_set_base,
+ .mode_set_base_atomic = intel_pipe_set_base_atomic,
+ .load_lut = intel_crtc_load_lut,
+ .disable = intel_crtc_disable,
+};
- /* Required for FBC */
- dspclk_gate |= DPFCUNIT_CLOCK_GATE_DISABLE |
- DPFCRUNIT_CLOCK_GATE_DISABLE |
- DPFDUNIT_CLOCK_GATE_DISABLE;
- /* Required for CxSR */
- dspclk_gate |= DPARBUNIT_CLOCK_GATE_DISABLE;
+static const struct drm_crtc_funcs intel_crtc_funcs = {
+ .reset = intel_crtc_reset,
+ .cursor_set = intel_crtc_cursor_set,
+ .cursor_move = intel_crtc_cursor_move,
+ .gamma_set = intel_crtc_gamma_set,
+ .set_config = drm_crtc_helper_set_config,
+ .destroy = intel_crtc_destroy,
+ .page_flip = intel_crtc_page_flip,
+};
- I915_WRITE(PCH_3DCGDIS0,
- MARIUNIT_CLOCK_GATE_DISABLE |
- SVSMUNIT_CLOCK_GATE_DISABLE);
- I915_WRITE(PCH_3DCGDIS1,
- VFMUNIT_CLOCK_GATE_DISABLE);
+static void intel_crtc_init(struct drm_device *dev, int pipe)
+{
+ drm_i915_private_t *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc;
+ int i;
- I915_WRITE(PCH_DSPCLK_GATE_D, dspclk_gate);
+ intel_crtc = kzalloc(sizeof(struct intel_crtc) + (INTELFB_CONN_LIMIT * sizeof(struct drm_connector *)), GFP_KERNEL);
+ if (intel_crtc == NULL)
+ return;
- /*
- * According to the spec the following bits should be set in
- * order to enable memory self-refresh
- * The bit 22/21 of 0x42004
- * The bit 5 of 0x42020
- * The bit 15 of 0x45000
- */
- I915_WRITE(ILK_DISPLAY_CHICKEN2,
- (I915_READ(ILK_DISPLAY_CHICKEN2) |
- ILK_DPARB_GATE | ILK_VSDPFD_FULL));
- I915_WRITE(ILK_DSPCLK_GATE,
- (I915_READ(ILK_DSPCLK_GATE) |
- ILK_DPARB_CLK_GATE));
- I915_WRITE(DISP_ARB_CTL,
- (I915_READ(DISP_ARB_CTL) |
- DISP_FBC_WM_DIS));
- I915_WRITE(WM3_LP_ILK, 0);
- I915_WRITE(WM2_LP_ILK, 0);
- I915_WRITE(WM1_LP_ILK, 0);
+ drm_crtc_init(dev, &intel_crtc->base, &intel_crtc_funcs);
- /*
- * Based on the document from hardware guys the following bits
- * should be set unconditionally in order to enable FBC.
- * The bit 22 of 0x42000
- * The bit 22 of 0x42004
- * The bit 7,8,9 of 0x42020.
- */
- if (IS_IRONLAKE_M(dev)) {
- I915_WRITE(ILK_DISPLAY_CHICKEN1,
- I915_READ(ILK_DISPLAY_CHICKEN1) |
- ILK_FBCQ_DIS);
- I915_WRITE(ILK_DISPLAY_CHICKEN2,
- I915_READ(ILK_DISPLAY_CHICKEN2) |
- ILK_DPARB_GATE);
- I915_WRITE(ILK_DSPCLK_GATE,
- I915_READ(ILK_DSPCLK_GATE) |
- ILK_DPFC_DIS1 |
- ILK_DPFC_DIS2 |
- ILK_CLK_FBC);
+ drm_mode_crtc_set_gamma_size(&intel_crtc->base, 256);
+ for (i = 0; i < 256; i++) {
+ intel_crtc->lut_r[i] = i;
+ intel_crtc->lut_g[i] = i;
+ intel_crtc->lut_b[i] = i;
}
- I915_WRITE(ILK_DISPLAY_CHICKEN2,
- I915_READ(ILK_DISPLAY_CHICKEN2) |
- ILK_ELPIN_409_SELECT);
- I915_WRITE(_3D_CHICKEN2,
- _3D_CHICKEN2_WM_READ_PIPELINED << 16 |
- _3D_CHICKEN2_WM_READ_PIPELINED);
-}
-
-static void gen6_init_clock_gating(struct drm_device *dev)
-{
- struct drm_i915_private *dev_priv = dev->dev_private;
- int pipe;
- uint32_t dspclk_gate = VRHUNIT_CLOCK_GATE_DISABLE;
+ /* Swap pipes & planes for FBC on pre-965 */
+ intel_crtc->pipe = pipe;
+ intel_crtc->plane = pipe;
+ if (IS_MOBILE(dev) && IS_GEN3(dev)) {
+ DRM_DEBUG_KMS("swapping pipes & planes for FBC\n");
+ intel_crtc->plane = !pipe;
+ }
- I915_WRITE(PCH_DSPCLK_GATE_D, dspclk_gate);
+ BUG_ON(pipe >= ARRAY_SIZE(dev_priv->plane_to_crtc_mapping) ||
+ dev_priv->plane_to_crtc_mapping[intel_crtc->plane] != NULL);
+ dev_priv->plane_to_crtc_mapping[intel_crtc->plane] = &intel_crtc->base;
+ dev_priv->pipe_to_crtc_mapping[intel_crtc->pipe] = &intel_crtc->base;
- I915_WRITE(ILK_DISPLAY_CHICKEN2,
- I915_READ(ILK_DISPLAY_CHICKEN2) |
- ILK_ELPIN_409_SELECT);
+ intel_crtc_reset(&intel_crtc->base);
+ intel_crtc->active = true; /* force the pipe off on setup_init_config */
+ intel_crtc->bpp = 24; /* default for pre-Ironlake */
- I915_WRITE(WM3_LP_ILK, 0);
- I915_WRITE(WM2_LP_ILK, 0);
- I915_WRITE(WM1_LP_ILK, 0);
+ if (HAS_PCH_SPLIT(dev)) {
+ if (pipe == 2 && IS_IVYBRIDGE(dev))
+ intel_crtc->no_pll = true;
+ intel_helper_funcs.prepare = ironlake_crtc_prepare;
+ intel_helper_funcs.commit = ironlake_crtc_commit;
+ } else {
+ intel_helper_funcs.prepare = i9xx_crtc_prepare;
+ intel_helper_funcs.commit = i9xx_crtc_commit;
+ }
- /* According to the BSpec vol1g, bit 12 (RCPBUNIT) clock
- * gating disable must be set. Failure to set it results in
- * flickering pixels due to Z write ordering failures after
- * some amount of runtime in the Mesa "fire" demo, and Unigine
- * Sanctuary and Tropics, and apparently anything else with
- * alpha test or pixel discard.
- *
- * According to the spec, bit 11 (RCCUNIT) must also be set,
- * but we didn't debug actual testcases to find it out.
- */
- I915_WRITE(GEN6_UCGCTL2,
- GEN6_RCPBUNIT_CLOCK_GATE_DISABLE |
- GEN6_RCCUNIT_CLOCK_GATE_DISABLE);
+ drm_crtc_helper_add(&intel_crtc->base, &intel_helper_funcs);
- /*
- * According to the spec the following bits should be
- * set in order to enable memory self-refresh and fbc:
- * The bit21 and bit22 of 0x42000
- * The bit21 and bit22 of 0x42004
- * The bit5 and bit7 of 0x42020
- * The bit14 of 0x70180
- * The bit14 of 0x71180
- */
- I915_WRITE(ILK_DISPLAY_CHICKEN1,
- I915_READ(ILK_DISPLAY_CHICKEN1) |
- ILK_FBCQ_DIS | ILK_PABSTRETCH_DIS);
- I915_WRITE(ILK_DISPLAY_CHICKEN2,
- I915_READ(ILK_DISPLAY_CHICKEN2) |
- ILK_DPARB_GATE | ILK_VSDPFD_FULL);
- I915_WRITE(ILK_DSPCLK_GATE,
- I915_READ(ILK_DSPCLK_GATE) |
- ILK_DPARB_CLK_GATE |
- ILK_DPFD_CLK_GATE);
+ intel_crtc->busy = false;
- for_each_pipe(pipe) {
- I915_WRITE(DSPCNTR(pipe),
- I915_READ(DSPCNTR(pipe)) |
- DISPPLANE_TRICKLE_FEED_DISABLE);
- intel_flush_display_plane(dev_priv, pipe);
- }
+ setup_timer(&intel_crtc->idle_timer, intel_crtc_idle_timer,
+ (unsigned long)intel_crtc);
}
-static void ivybridge_init_clock_gating(struct drm_device *dev)
+int intel_get_pipe_from_crtc_id(struct drm_device *dev, void *data,
+ struct drm_file *file)
{
- struct drm_i915_private *dev_priv = dev->dev_private;
- int pipe;
- uint32_t dspclk_gate = VRHUNIT_CLOCK_GATE_DISABLE;
-
- I915_WRITE(PCH_DSPCLK_GATE_D, dspclk_gate);
-
- I915_WRITE(WM3_LP_ILK, 0);
- I915_WRITE(WM2_LP_ILK, 0);
- I915_WRITE(WM1_LP_ILK, 0);
+ drm_i915_private_t *dev_priv = dev->dev_private;
+ struct drm_i915_get_pipe_from_crtc_id *pipe_from_crtc_id = data;
+ struct drm_mode_object *drmmode_obj;
+ struct intel_crtc *crtc;
- /* According to the spec, bit 13 (RCZUNIT) must be set on IVB.
- * This implements the WaDisableRCZUnitClockGating workaround.
- */
- I915_WRITE(GEN6_UCGCTL2, GEN6_RCZUNIT_CLOCK_GATE_DISABLE);
+ if (!dev_priv) {
+ DRM_ERROR("called with no initialization\n");
+ return -EINVAL;
+ }
- I915_WRITE(ILK_DSPCLK_GATE, IVB_VRHUNIT_CLK_GATE);
+ drmmode_obj = drm_mode_object_find(dev, pipe_from_crtc_id->crtc_id,
+ DRM_MODE_OBJECT_CRTC);
- I915_WRITE(IVB_CHICKEN3,
- CHICKEN3_DGMG_REQ_OUT_FIX_DISABLE |
- CHICKEN3_DGMG_DONE_FIX_DISABLE);
+ if (!drmmode_obj) {
+ DRM_ERROR("no such CRTC id\n");
+ return -EINVAL;
+ }
- /* Apply the WaDisableRHWOOptimizationForRenderHang workaround. */
- I915_WRITE(GEN7_COMMON_SLICE_CHICKEN1,
- GEN7_CSC1_RHWO_OPT_DISABLE_IN_RCC);
+ crtc = to_intel_crtc(obj_to_crtc(drmmode_obj));
+ pipe_from_crtc_id->pipe = crtc->pipe;
- /* WaApplyL3ControlAndL3ChickenMode requires those two on Ivy Bridge */
- I915_WRITE(GEN7_L3CNTLREG1,
- GEN7_WA_FOR_GEN7_L3_CONTROL);
- I915_WRITE(GEN7_L3_CHICKEN_MODE_REGISTER,
- GEN7_WA_L3_CHICKEN_MODE);
+ return 0;
+}
- /* This is required by WaCatErrorRejectionIssue */
- I915_WRITE(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG,
- I915_READ(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG) |
- GEN7_SQ_CHICKEN_MBCUNIT_SQINTMOB);
+static int intel_encoder_clones(struct drm_device *dev, int type_mask)
+{
+ struct intel_encoder *encoder;
+ int index_mask = 0;
+ int entry = 0;
- for_each_pipe(pipe) {
- I915_WRITE(DSPCNTR(pipe),
- I915_READ(DSPCNTR(pipe)) |
- DISPPLANE_TRICKLE_FEED_DISABLE);
- intel_flush_display_plane(dev_priv, pipe);
+ list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.head) {
+ if (type_mask & encoder->clone_mask)
+ index_mask |= (1 << entry);
+ entry++;
}
+
+ return index_mask;
}
-static void valleyview_init_clock_gating(struct drm_device *dev)
+static bool has_edp_a(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
- int pipe;
- uint32_t dspclk_gate = VRHUNIT_CLOCK_GATE_DISABLE;
- I915_WRITE(PCH_DSPCLK_GATE_D, dspclk_gate);
+ if (!IS_MOBILE(dev))
+ return false;
- I915_WRITE(WM3_LP_ILK, 0);
- I915_WRITE(WM2_LP_ILK, 0);
- I915_WRITE(WM1_LP_ILK, 0);
+ if ((I915_READ(DP_A) & DP_DETECTED) == 0)
+ return false;
- /* According to the spec, bit 13 (RCZUNIT) must be set on IVB.
- * This implements the WaDisableRCZUnitClockGating workaround.
- */
- I915_WRITE(GEN6_UCGCTL2, GEN6_RCZUNIT_CLOCK_GATE_DISABLE);
+ if (IS_GEN5(dev) &&
+ (I915_READ(ILK_DISPLAY_CHICKEN_FUSES) & ILK_eDP_A_DISABLE))
+ return false;
- I915_WRITE(ILK_DSPCLK_GATE, IVB_VRHUNIT_CLK_GATE);
+ return true;
+}
- I915_WRITE(IVB_CHICKEN3,
- CHICKEN3_DGMG_REQ_OUT_FIX_DISABLE |
- CHICKEN3_DGMG_DONE_FIX_DISABLE);
+static void intel_setup_outputs(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_encoder *encoder;
+ bool dpd_is_edp = false;
+ bool has_lvds;
- /* Apply the WaDisableRHWOOptimizationForRenderHang workaround. */
- I915_WRITE(GEN7_COMMON_SLICE_CHICKEN1,
- GEN7_CSC1_RHWO_OPT_DISABLE_IN_RCC);
+ has_lvds = intel_lvds_init(dev);
+ if (!has_lvds && !HAS_PCH_SPLIT(dev)) {
+ /* disable the panel fitter on everything but LVDS */
+ I915_WRITE(PFIT_CONTROL, 0);
+ }
- /* WaApplyL3ControlAndL3ChickenMode requires those two on Ivy Bridge */
- I915_WRITE(GEN7_L3CNTLREG1, GEN7_WA_FOR_GEN7_L3_CONTROL);
- I915_WRITE(GEN7_L3_CHICKEN_MODE_REGISTER, GEN7_WA_L3_CHICKEN_MODE);
+ if (HAS_PCH_SPLIT(dev)) {
+ dpd_is_edp = intel_dpd_is_edp(dev);
- /* This is required by WaCatErrorRejectionIssue */
- I915_WRITE(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG,
- I915_READ(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG) |
- GEN7_SQ_CHICKEN_MBCUNIT_SQINTMOB);
+ if (has_edp_a(dev))
+ intel_dp_init(dev, DP_A);
- for_each_pipe(pipe) {
- I915_WRITE(DSPCNTR(pipe),
- I915_READ(DSPCNTR(pipe)) |
- DISPPLANE_TRICKLE_FEED_DISABLE);
- intel_flush_display_plane(dev_priv, pipe);
+ if (dpd_is_edp && (I915_READ(PCH_DP_D) & DP_DETECTED))
+ intel_dp_init(dev, PCH_DP_D);
}
- I915_WRITE(CACHE_MODE_1, I915_READ(CACHE_MODE_1) |
- (PIXEL_SUBSPAN_COLLECT_OPT_DISABLE << 16) |
- PIXEL_SUBSPAN_COLLECT_OPT_DISABLE);
-}
-
-static void g4x_init_clock_gating(struct drm_device *dev)
-{
- struct drm_i915_private *dev_priv = dev->dev_private;
- uint32_t dspclk_gate;
-
- I915_WRITE(RENCLK_GATE_D1, 0);
- I915_WRITE(RENCLK_GATE_D2, VF_UNIT_CLOCK_GATE_DISABLE |
- GS_UNIT_CLOCK_GATE_DISABLE |
- CL_UNIT_CLOCK_GATE_DISABLE);
- I915_WRITE(RAMCLK_GATE_D, 0);
- dspclk_gate = VRHUNIT_CLOCK_GATE_DISABLE |
- OVRUNIT_CLOCK_GATE_DISABLE |
- OVCUNIT_CLOCK_GATE_DISABLE;
- if (IS_GM45(dev))
- dspclk_gate |= DSSUNIT_CLOCK_GATE_DISABLE;
- I915_WRITE(DSPCLK_GATE_D, dspclk_gate);
-}
+ intel_crt_init(dev);
-static void crestline_init_clock_gating(struct drm_device *dev)
-{
- struct drm_i915_private *dev_priv = dev->dev_private;
+ if (HAS_PCH_SPLIT(dev)) {
+ int found;
- I915_WRITE(RENCLK_GATE_D1, I965_RCC_CLOCK_GATE_DISABLE);
- I915_WRITE(RENCLK_GATE_D2, 0);
- I915_WRITE(DSPCLK_GATE_D, 0);
- I915_WRITE(RAMCLK_GATE_D, 0);
- I915_WRITE16(DEUC, 0);
-}
+ if (I915_READ(HDMIB) & PORT_DETECTED) {
+ /* PCH SDVOB multiplex with HDMIB */
+ found = intel_sdvo_init(dev, PCH_SDVOB, true);
+ if (!found)
+ intel_hdmi_init(dev, HDMIB);
+ if (!found && (I915_READ(PCH_DP_B) & DP_DETECTED))
+ intel_dp_init(dev, PCH_DP_B);
+ }
-static void broadwater_init_clock_gating(struct drm_device *dev)
-{
- struct drm_i915_private *dev_priv = dev->dev_private;
+ if (I915_READ(HDMIC) & PORT_DETECTED)
+ intel_hdmi_init(dev, HDMIC);
- I915_WRITE(RENCLK_GATE_D1, I965_RCZ_CLOCK_GATE_DISABLE |
- I965_RCC_CLOCK_GATE_DISABLE |
- I965_RCPB_CLOCK_GATE_DISABLE |
- I965_ISC_CLOCK_GATE_DISABLE |
- I965_FBC_CLOCK_GATE_DISABLE);
- I915_WRITE(RENCLK_GATE_D2, 0);
-}
+ if (I915_READ(HDMID) & PORT_DETECTED)
+ intel_hdmi_init(dev, HDMID);
-static void gen3_init_clock_gating(struct drm_device *dev)
-{
- struct drm_i915_private *dev_priv = dev->dev_private;
- u32 dstate = I915_READ(D_STATE);
+ if (I915_READ(PCH_DP_C) & DP_DETECTED)
+ intel_dp_init(dev, PCH_DP_C);
- dstate |= DSTATE_PLL_D3_OFF | DSTATE_GFX_CLOCK_GATING |
- DSTATE_DOT_CLOCK_GATING;
- I915_WRITE(D_STATE, dstate);
-}
+ if (!dpd_is_edp && (I915_READ(PCH_DP_D) & DP_DETECTED))
+ intel_dp_init(dev, PCH_DP_D);
-static void i85x_init_clock_gating(struct drm_device *dev)
-{
- struct drm_i915_private *dev_priv = dev->dev_private;
+ } else if (SUPPORTS_DIGITAL_OUTPUTS(dev)) {
+ bool found = false;
- I915_WRITE(RENCLK_GATE_D1, SV_CLOCK_GATE_DISABLE);
-}
+ if (I915_READ(SDVOB) & SDVO_DETECTED) {
+ DRM_DEBUG_KMS("probing SDVOB\n");
+ found = intel_sdvo_init(dev, SDVOB, true);
+ if (!found && SUPPORTS_INTEGRATED_HDMI(dev)) {
+ DRM_DEBUG_KMS("probing HDMI on SDVOB\n");
+ intel_hdmi_init(dev, SDVOB);
+ }
-static void i830_init_clock_gating(struct drm_device *dev)
-{
- struct drm_i915_private *dev_priv = dev->dev_private;
+ if (!found && SUPPORTS_INTEGRATED_DP(dev)) {
+ DRM_DEBUG_KMS("probing DP_B\n");
+ intel_dp_init(dev, DP_B);
+ }
+ }
- I915_WRITE(DSPCLK_GATE_D, OVRUNIT_CLOCK_GATE_DISABLE);
-}
+ /* Before G4X SDVOC doesn't have its own detect register */
-static void ibx_init_clock_gating(struct drm_device *dev)
-{
- struct drm_i915_private *dev_priv = dev->dev_private;
+ if (I915_READ(SDVOB) & SDVO_DETECTED) {
+ DRM_DEBUG_KMS("probing SDVOC\n");
+ found = intel_sdvo_init(dev, SDVOC, false);
+ }
- /*
- * On Ibex Peak and Cougar Point, we need to disable clock
- * gating for the panel power sequencer or it will fail to
- * start up when no ports are active.
- */
- I915_WRITE(SOUTH_DSPCLK_GATE_D, PCH_DPLSUNIT_CLOCK_GATE_DISABLE);
-}
+ if (!found && (I915_READ(SDVOC) & SDVO_DETECTED)) {
-static void cpt_init_clock_gating(struct drm_device *dev)
-{
- struct drm_i915_private *dev_priv = dev->dev_private;
- int pipe;
+ if (SUPPORTS_INTEGRATED_HDMI(dev)) {
+ DRM_DEBUG_KMS("probing HDMI on SDVOC\n");
+ intel_hdmi_init(dev, SDVOC);
+ }
+ if (SUPPORTS_INTEGRATED_DP(dev)) {
+ DRM_DEBUG_KMS("probing DP_C\n");
+ intel_dp_init(dev, DP_C);
+ }
+ }
- /*
- * On Ibex Peak and Cougar Point, we need to disable clock
- * gating for the panel power sequencer or it will fail to
- * start up when no ports are active.
- */
- I915_WRITE(SOUTH_DSPCLK_GATE_D, PCH_DPLSUNIT_CLOCK_GATE_DISABLE);
- I915_WRITE(SOUTH_CHICKEN2, I915_READ(SOUTH_CHICKEN2) |
- DPLS_EDP_PPS_FIX_DIS);
- /* Without this, mode sets may fail silently on FDI */
- for_each_pipe(pipe)
- I915_WRITE(TRANS_CHICKEN2(pipe), TRANS_AUTOTRAIN_GEN_STALL_DIS);
-}
+ if (SUPPORTS_INTEGRATED_DP(dev) &&
+ (I915_READ(DP_D) & DP_DETECTED)) {
+ DRM_DEBUG_KMS("probing DP_D\n");
+ intel_dp_init(dev, DP_D);
+ }
+ } else if (IS_GEN2(dev))
+ intel_dvo_init(dev);
-static void ironlake_teardown_rc6(struct drm_device *dev)
-{
- struct drm_i915_private *dev_priv = dev->dev_private;
+ if (SUPPORTS_TV(dev))
+ intel_tv_init(dev);
- if (dev_priv->renderctx) {
- i915_gem_object_unpin(dev_priv->renderctx);
- drm_gem_object_unreference(&dev_priv->renderctx->base);
- dev_priv->renderctx = NULL;
+ list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.head) {
+ encoder->base.possible_crtcs = encoder->crtc_mask;
+ encoder->base.possible_clones =
+ intel_encoder_clones(dev, encoder->clone_mask);
}
- if (dev_priv->pwrctx) {
- i915_gem_object_unpin(dev_priv->pwrctx);
- drm_gem_object_unreference(&dev_priv->pwrctx->base);
- dev_priv->pwrctx = NULL;
- }
+ /* disable all the possible outputs/crtcs before entering KMS mode */
+ drm_helper_disable_unused_functions(dev);
+
+ if (HAS_PCH_SPLIT(dev))
+ ironlake_init_pch_refclk(dev);
}
-static void ironlake_disable_rc6(struct drm_device *dev)
+static void intel_user_framebuffer_destroy(struct drm_framebuffer *fb)
{
- struct drm_i915_private *dev_priv = dev->dev_private;
-
- if (I915_READ(PWRCTXA)) {
- /* Wake the GPU, prevent RC6, then restore RSTDBYCTL */
- I915_WRITE(RSTDBYCTL, I915_READ(RSTDBYCTL) | RCX_SW_EXIT);
- wait_for(((I915_READ(RSTDBYCTL) & RSX_STATUS_MASK) == RSX_STATUS_ON),
- 50);
-
- I915_WRITE(PWRCTXA, 0);
- POSTING_READ(PWRCTXA);
+ struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
- I915_WRITE(RSTDBYCTL, I915_READ(RSTDBYCTL) & ~RCX_SW_EXIT);
- POSTING_READ(RSTDBYCTL);
- }
+ drm_framebuffer_cleanup(fb);
+ drm_gem_object_unreference_unlocked(&intel_fb->obj->base);
- ironlake_teardown_rc6(dev);
+ kfree(intel_fb);
}
-static int ironlake_setup_rc6(struct drm_device *dev)
+static int intel_user_framebuffer_create_handle(struct drm_framebuffer *fb,
+ struct drm_file *file,
+ unsigned int *handle)
{
- struct drm_i915_private *dev_priv = dev->dev_private;
-
- if (dev_priv->renderctx == NULL)
- dev_priv->renderctx = intel_alloc_context_page(dev);
- if (!dev_priv->renderctx)
- return -ENOMEM;
-
- if (dev_priv->pwrctx == NULL)
- dev_priv->pwrctx = intel_alloc_context_page(dev);
- if (!dev_priv->pwrctx) {
- ironlake_teardown_rc6(dev);
- return -ENOMEM;
- }
+ struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
+ struct drm_i915_gem_object *obj = intel_fb->obj;
- return 0;
+ return drm_gem_handle_create(file, &obj->base, handle);
}
-void ironlake_enable_rc6(struct drm_device *dev)
+static const struct drm_framebuffer_funcs intel_fb_funcs = {
+ .destroy = intel_user_framebuffer_destroy,
+ .create_handle = intel_user_framebuffer_create_handle,
+};
+
+int intel_framebuffer_init(struct drm_device *dev,
+ struct intel_framebuffer *intel_fb,
+ struct drm_mode_fb_cmd2 *mode_cmd,
+ struct drm_i915_gem_object *obj)
{
- struct drm_i915_private *dev_priv = dev->dev_private;
int ret;
- /* rc6 disabled by default due to repeated reports of hanging during
- * boot and resume.
- */
- if (!intel_enable_rc6(dev))
- return;
+ if (obj->tiling_mode == I915_TILING_Y)
+ return -EINVAL;
- mutex_lock(&dev->struct_mutex);
- ret = ironlake_setup_rc6(dev);
- if (ret) {
- mutex_unlock(&dev->struct_mutex);
- return;
- }
+ if (mode_cmd->pitches[0] & 63)
+ return -EINVAL;
- /*
- * GPU can automatically power down the render unit if given a page
- * to save state.
- */
- ret = BEGIN_LP_RING(6);
- if (ret) {
- ironlake_teardown_rc6(dev);
- mutex_unlock(&dev->struct_mutex);
- return;
+ switch (mode_cmd->pixel_format) {
+ case DRM_FORMAT_RGB332:
+ case DRM_FORMAT_RGB565:
+ case DRM_FORMAT_XRGB8888:
+ case DRM_FORMAT_XBGR8888:
+ case DRM_FORMAT_ARGB8888:
+ case DRM_FORMAT_XRGB2101010:
+ case DRM_FORMAT_ARGB2101010:
+ /* RGB formats are common across chipsets */
+ break;
+ case DRM_FORMAT_YUYV:
+ case DRM_FORMAT_UYVY:
+ case DRM_FORMAT_YVYU:
+ case DRM_FORMAT_VYUY:
+ break;
+ default:
+ DRM_DEBUG_KMS("unsupported pixel format %u\n",
+ mode_cmd->pixel_format);
+ return -EINVAL;
}
- OUT_RING(MI_SUSPEND_FLUSH | MI_SUSPEND_FLUSH_EN);
- OUT_RING(MI_SET_CONTEXT);
- OUT_RING(dev_priv->renderctx->gtt_offset |
- MI_MM_SPACE_GTT |
- MI_SAVE_EXT_STATE_EN |
- MI_RESTORE_EXT_STATE_EN |
- MI_RESTORE_INHIBIT);
- OUT_RING(MI_SUSPEND_FLUSH);
- OUT_RING(MI_NOOP);
- OUT_RING(MI_FLUSH);
- ADVANCE_LP_RING();
-
- /*
- * Wait for the command parser to advance past MI_SET_CONTEXT. The HW
- * does an implicit flush, combined with MI_FLUSH above, it should be
- * safe to assume that renderctx is valid
- */
- ret = intel_wait_ring_idle(LP_RING(dev_priv));
+ ret = drm_framebuffer_init(dev, &intel_fb->base, &intel_fb_funcs);
if (ret) {
- DRM_ERROR("failed to enable ironlake power power savings\n");
- ironlake_teardown_rc6(dev);
- mutex_unlock(&dev->struct_mutex);
- return;
+ DRM_ERROR("framebuffer init failed %d\n", ret);
+ return ret;
}
- I915_WRITE(PWRCTXA, dev_priv->pwrctx->gtt_offset | PWRCTX_EN);
- I915_WRITE(RSTDBYCTL, I915_READ(RSTDBYCTL) & ~RCX_SW_EXIT);
- mutex_unlock(&dev->struct_mutex);
+ drm_helper_mode_fill_fb_struct(&intel_fb->base, mode_cmd);
+ intel_fb->obj = obj;
+ return 0;
}
-void intel_init_clock_gating(struct drm_device *dev)
+static struct drm_framebuffer *
+intel_user_framebuffer_create(struct drm_device *dev,
+ struct drm_file *filp,
+ struct drm_mode_fb_cmd2 *mode_cmd)
{
- struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_i915_gem_object *obj;
- dev_priv->display.init_clock_gating(dev);
+ obj = to_intel_bo(drm_gem_object_lookup(dev, filp,
+ mode_cmd->handles[0]));
+ if (&obj->base == NULL)
+ return ERR_PTR(-ENOENT);
- if (dev_priv->display.init_pch_clock_gating)
- dev_priv->display.init_pch_clock_gating(dev);
+ return intel_framebuffer_create(dev, mode_cmd, obj);
}
+static const struct drm_mode_config_funcs intel_mode_funcs = {
+ .fb_create = intel_user_framebuffer_create,
+ .output_poll_changed = intel_fb_output_poll_changed,
+};
+
/* Set up chip specific display functions */
static void intel_init_display(struct drm_device *dev)
{
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 8748e5e..72a89a0 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -204,6 +204,17 @@ struct intel_plane {
struct drm_intel_sprite_colorkey *key);
};
+struct cxsr_latency {
+ int is_desktop;
+ int is_ddr3;
+ unsigned long fsb_freq;
+ unsigned long mem_freq;
+ unsigned long display_sr;
+ unsigned long display_hpll_disable;
+ unsigned long cursor_sr;
+ unsigned long cursor_hpll_disable;
+};
+
#define to_intel_crtc(x) container_of(x, struct intel_crtc, base)
#define to_intel_connector(x) container_of(x, struct intel_connector, base)
#define to_intel_encoder(x) container_of(x, struct intel_encoder, base)
@@ -434,4 +445,51 @@ extern int intel_sprite_get_colorkey(struct drm_device *dev, void *data,
extern u32 intel_dpio_read(struct drm_i915_private *dev_priv, int reg);
+void intel_flush_display_plane(struct drm_i915_private *dev_priv,
+ enum plane plane);
+
+/* Power-related functions in intel_pm.c */
+extern void intel_update_fbc(struct drm_device *dev);
+extern bool ironlake_fbc_enabled(struct drm_device *dev);
+extern void ironlake_enable_fbc(struct drm_crtc *crtc, unsigned long interval);
+extern void ironlake_disable_fbc(struct drm_device *dev);
+extern void g4x_enable_fbc(struct drm_crtc *crtc, unsigned long interval);
+extern void g4x_disable_fbc(struct drm_device *dev);
+extern bool g4x_fbc_enabled(struct drm_device *dev);
+extern void i8xx_disable_fbc(struct drm_device *dev);
+extern void i8xx_enable_fbc(struct drm_crtc *crtc, unsigned long interval);
+extern bool i8xx_fbc_enabled(struct drm_device *dev);
+extern void crestline_init_clock_gating(struct drm_device *dev);
+extern void broadwater_init_clock_gating(struct drm_device *dev);
+extern void g4x_init_clock_gating(struct drm_device *dev);
+extern void gen3_init_clock_gating(struct drm_device *dev);
+extern void i85x_init_clock_gating(struct drm_device *dev);
+extern void i830_init_clock_gating(struct drm_device *dev);
+extern void ibx_init_clock_gating(struct drm_device *dev);
+extern void cpt_init_clock_gating(struct drm_device *dev);
+extern void gen6_init_clock_gating(struct drm_device *dev);
+extern void ironlake_init_clock_gating(struct drm_device *dev);
+extern void ivybridge_init_clock_gating(struct drm_device *dev);
+extern void valleyview_init_clock_gating(struct drm_device *dev);
+extern void ironlake_update_wm(struct drm_device *dev);
+extern void valleyview_update_wm(struct drm_device *dev);
+extern void sandybridge_update_wm(struct drm_device *dev);
+extern void sandybridge_update_sprite_wm(struct drm_device *dev, int pipe,
+ uint32_t sprite_width, int pixel_size);
+extern void pineview_disable_cxsr(struct drm_device *dev);
+extern void pineview_update_wm(struct drm_device *dev);
+extern void g4x_update_wm(struct drm_device *dev);
+extern void i965_update_wm(struct drm_device *dev);
+extern void i9xx_update_wm(struct drm_device *dev);
+extern void i830_update_wm(struct drm_device *dev);
+extern int i9xx_get_fifo_size(struct drm_device *dev, int plane);
+extern int i85x_get_fifo_size(struct drm_device *dev, int plane);
+extern int i845_get_fifo_size(struct drm_device *dev, int plane);
+extern int i830_get_fifo_size(struct drm_device *dev, int plane);
+extern const struct cxsr_latency *intel_get_cxsr_latency(int is_desktop,
+ int is_ddr3,
+ int fsb,
+ int mem);
+extern void ironlake_disable_rc6(struct drm_device *dev);
+
#endif /* __INTEL_DRV_H__ */
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
new file mode 100644
index 0000000..f0cf943
--- /dev/null
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -0,0 +1,2899 @@
+/*
+ * Copyright © 2012 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Authors:
+ * Eugeni Dodonov <eugeni.dodonov at intel.com>
+ *
+ */
+
+#include <linux/cpufreq.h>
+#include "i915_drv.h"
+#include "intel_drv.h"
+
+void i8xx_disable_fbc(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ u32 fbc_ctl;
+
+ /* Disable compression */
+ fbc_ctl = I915_READ(FBC_CONTROL);
+ if ((fbc_ctl & FBC_CTL_EN) == 0)
+ return;
+
+ fbc_ctl &= ~FBC_CTL_EN;
+ I915_WRITE(FBC_CONTROL, fbc_ctl);
+
+ /* Wait for compressing bit to clear */
+ if (wait_for((I915_READ(FBC_STATUS) & FBC_STAT_COMPRESSING) == 0, 10)) {
+ DRM_DEBUG_KMS("FBC idle timed out\n");
+ return;
+ }
+
+ DRM_DEBUG_KMS("disabled FBC\n");
+}
+
+void i8xx_enable_fbc(struct drm_crtc *crtc, unsigned long interval)
+{
+ struct drm_device *dev = crtc->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_framebuffer *fb = crtc->fb;
+ struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
+ struct drm_i915_gem_object *obj = intel_fb->obj;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ int cfb_pitch;
+ int plane, i;
+ u32 fbc_ctl, fbc_ctl2;
+
+ cfb_pitch = dev_priv->cfb_size / FBC_LL_SIZE;
+ if (fb->pitches[0] < cfb_pitch)
+ cfb_pitch = fb->pitches[0];
+
+ /* FBC_CTL wants 64B units */
+ cfb_pitch = (cfb_pitch / 64) - 1;
+ plane = intel_crtc->plane == 0 ? FBC_CTL_PLANEA : FBC_CTL_PLANEB;
+
+ /* Clear old tags */
+ for (i = 0; i < (FBC_LL_SIZE / 32) + 1; i++)
+ I915_WRITE(FBC_TAG + (i * 4), 0);
+
+ /* Set it up... */
+ fbc_ctl2 = FBC_CTL_FENCE_DBL | FBC_CTL_IDLE_IMM | FBC_CTL_CPU_FENCE;
+ fbc_ctl2 |= plane;
+ I915_WRITE(FBC_CONTROL2, fbc_ctl2);
+ I915_WRITE(FBC_FENCE_OFF, crtc->y);
+
+ /* enable it... */
+ fbc_ctl = FBC_CTL_EN | FBC_CTL_PERIODIC;
+ if (IS_I945GM(dev))
+ fbc_ctl |= FBC_CTL_C3_IDLE; /* 945 needs special SR handling */
+ fbc_ctl |= (cfb_pitch & 0xff) << FBC_CTL_STRIDE_SHIFT;
+ fbc_ctl |= (interval & 0x2fff) << FBC_CTL_INTERVAL_SHIFT;
+ fbc_ctl |= obj->fence_reg;
+ I915_WRITE(FBC_CONTROL, fbc_ctl);
+
+ DRM_DEBUG_KMS("enabled FBC, pitch %d, yoff %d, plane %d, ",
+ cfb_pitch, crtc->y, intel_crtc->plane);
+}
+
+bool i8xx_fbc_enabled(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ return I915_READ(FBC_CONTROL) & FBC_CTL_EN;
+}
+
+void g4x_enable_fbc(struct drm_crtc *crtc, unsigned long interval)
+{
+ struct drm_device *dev = crtc->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_framebuffer *fb = crtc->fb;
+ struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
+ struct drm_i915_gem_object *obj = intel_fb->obj;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ int plane = intel_crtc->plane == 0 ? DPFC_CTL_PLANEA : DPFC_CTL_PLANEB;
+ unsigned long stall_watermark = 200;
+ u32 dpfc_ctl;
+
+ dpfc_ctl = plane | DPFC_SR_EN | DPFC_CTL_LIMIT_1X;
+ dpfc_ctl |= DPFC_CTL_FENCE_EN | obj->fence_reg;
+ I915_WRITE(DPFC_CHICKEN, DPFC_HT_MODIFY);
+
+ I915_WRITE(DPFC_RECOMP_CTL, DPFC_RECOMP_STALL_EN |
+ (stall_watermark << DPFC_RECOMP_STALL_WM_SHIFT) |
+ (interval << DPFC_RECOMP_TIMER_COUNT_SHIFT));
+ I915_WRITE(DPFC_FENCE_YOFF, crtc->y);
+
+ /* enable it... */
+ I915_WRITE(DPFC_CONTROL, I915_READ(DPFC_CONTROL) | DPFC_CTL_EN);
+
+ DRM_DEBUG_KMS("enabled fbc on plane %d\n", intel_crtc->plane);
+}
+
+void g4x_disable_fbc(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ u32 dpfc_ctl;
+
+ /* Disable compression */
+ dpfc_ctl = I915_READ(DPFC_CONTROL);
+ if (dpfc_ctl & DPFC_CTL_EN) {
+ dpfc_ctl &= ~DPFC_CTL_EN;
+ I915_WRITE(DPFC_CONTROL, dpfc_ctl);
+
+ DRM_DEBUG_KMS("disabled FBC\n");
+ }
+}
+
+bool g4x_fbc_enabled(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ return I915_READ(DPFC_CONTROL) & DPFC_CTL_EN;
+}
+
+static void sandybridge_blit_fbc_update(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ u32 blt_ecoskpd;
+
+ /* Make sure blitter notifies FBC of writes */
+ gen6_gt_force_wake_get(dev_priv);
+ blt_ecoskpd = I915_READ(GEN6_BLITTER_ECOSKPD);
+ blt_ecoskpd |= GEN6_BLITTER_FBC_NOTIFY <<
+ GEN6_BLITTER_LOCK_SHIFT;
+ I915_WRITE(GEN6_BLITTER_ECOSKPD, blt_ecoskpd);
+ blt_ecoskpd |= GEN6_BLITTER_FBC_NOTIFY;
+ I915_WRITE(GEN6_BLITTER_ECOSKPD, blt_ecoskpd);
+ blt_ecoskpd &= ~(GEN6_BLITTER_FBC_NOTIFY <<
+ GEN6_BLITTER_LOCK_SHIFT);
+ I915_WRITE(GEN6_BLITTER_ECOSKPD, blt_ecoskpd);
+ POSTING_READ(GEN6_BLITTER_ECOSKPD);
+ gen6_gt_force_wake_put(dev_priv);
+}
+
+void ironlake_enable_fbc(struct drm_crtc *crtc, unsigned long interval)
+{
+ struct drm_device *dev = crtc->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_framebuffer *fb = crtc->fb;
+ struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
+ struct drm_i915_gem_object *obj = intel_fb->obj;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ int plane = intel_crtc->plane == 0 ? DPFC_CTL_PLANEA : DPFC_CTL_PLANEB;
+ unsigned long stall_watermark = 200;
+ u32 dpfc_ctl;
+
+ dpfc_ctl = I915_READ(ILK_DPFC_CONTROL);
+ dpfc_ctl &= DPFC_RESERVED;
+ dpfc_ctl |= (plane | DPFC_CTL_LIMIT_1X);
+ /* Set persistent mode for front-buffer rendering, ala X. */
+ dpfc_ctl |= DPFC_CTL_PERSISTENT_MODE;
+ dpfc_ctl |= (DPFC_CTL_FENCE_EN | obj->fence_reg);
+ I915_WRITE(ILK_DPFC_CHICKEN, DPFC_HT_MODIFY);
+
+ I915_WRITE(ILK_DPFC_RECOMP_CTL, DPFC_RECOMP_STALL_EN |
+ (stall_watermark << DPFC_RECOMP_STALL_WM_SHIFT) |
+ (interval << DPFC_RECOMP_TIMER_COUNT_SHIFT));
+ I915_WRITE(ILK_DPFC_FENCE_YOFF, crtc->y);
+ I915_WRITE(ILK_FBC_RT_BASE, obj->gtt_offset | ILK_FBC_RT_VALID);
+ /* enable it... */
+ I915_WRITE(ILK_DPFC_CONTROL, dpfc_ctl | DPFC_CTL_EN);
+
+ if (IS_GEN6(dev)) {
+ I915_WRITE(SNB_DPFC_CTL_SA,
+ SNB_CPU_FENCE_ENABLE | obj->fence_reg);
+ I915_WRITE(DPFC_CPU_FENCE_OFFSET, crtc->y);
+ sandybridge_blit_fbc_update(dev);
+ }
+
+ DRM_DEBUG_KMS("enabled fbc on plane %d\n", intel_crtc->plane);
+}
+
+void ironlake_disable_fbc(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ u32 dpfc_ctl;
+
+ /* Disable compression */
+ dpfc_ctl = I915_READ(ILK_DPFC_CONTROL);
+ if (dpfc_ctl & DPFC_CTL_EN) {
+ dpfc_ctl &= ~DPFC_CTL_EN;
+ I915_WRITE(ILK_DPFC_CONTROL, dpfc_ctl);
+
+ DRM_DEBUG_KMS("disabled FBC\n");
+ }
+}
+
+bool ironlake_fbc_enabled(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ return I915_READ(ILK_DPFC_CONTROL) & DPFC_CTL_EN;
+}
+
+bool intel_fbc_enabled(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ if (!dev_priv->display.fbc_enabled)
+ return false;
+
+ return dev_priv->display.fbc_enabled(dev);
+}
+
+static void intel_fbc_work_fn(struct work_struct *__work)
+{
+ struct intel_fbc_work *work =
+ container_of(to_delayed_work(__work),
+ struct intel_fbc_work, work);
+ struct drm_device *dev = work->crtc->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ mutex_lock(&dev->struct_mutex);
+ if (work == dev_priv->fbc_work) {
+ /* Double check that we haven't switched fb without cancelling
+ * the prior work.
+ */
+ if (work->crtc->fb == work->fb) {
+ dev_priv->display.enable_fbc(work->crtc,
+ work->interval);
+
+ dev_priv->cfb_plane = to_intel_crtc(work->crtc)->plane;
+ dev_priv->cfb_fb = work->crtc->fb->base.id;
+ dev_priv->cfb_y = work->crtc->y;
+ }
+
+ dev_priv->fbc_work = NULL;
+ }
+ mutex_unlock(&dev->struct_mutex);
+
+ kfree(work);
+}
+
+static void intel_cancel_fbc_work(struct drm_i915_private *dev_priv)
+{
+ if (dev_priv->fbc_work == NULL)
+ return;
+
+ DRM_DEBUG_KMS("cancelling pending FBC enable\n");
+
+ /* Synchronisation is provided by struct_mutex and checking of
+ * dev_priv->fbc_work, so we can perform the cancellation
+ * entirely asynchronously.
+ */
+ if (cancel_delayed_work(&dev_priv->fbc_work->work))
+ /* tasklet was killed before being run, clean up */
+ kfree(dev_priv->fbc_work);
+
+ /* Mark the work as no longer wanted so that if it does
+ * wake-up (because the work was already running and waiting
+ * for our mutex), it will discover that is no longer
+ * necessary to run.
+ */
+ dev_priv->fbc_work = NULL;
+}
+
+static void intel_enable_fbc(struct drm_crtc *crtc, unsigned long interval)
+{
+ struct intel_fbc_work *work;
+ struct drm_device *dev = crtc->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ if (!dev_priv->display.enable_fbc)
+ return;
+
+ intel_cancel_fbc_work(dev_priv);
+
+ work = kzalloc(sizeof *work, GFP_KERNEL);
+ if (work == NULL) {
+ dev_priv->display.enable_fbc(crtc, interval);
+ return;
+ }
+
+ work->crtc = crtc;
+ work->fb = crtc->fb;
+ work->interval = interval;
+ INIT_DELAYED_WORK(&work->work, intel_fbc_work_fn);
+
+ dev_priv->fbc_work = work;
+
+ DRM_DEBUG_KMS("scheduling delayed FBC enable\n");
+
+ /* Delay the actual enabling to let pageflipping cease and the
+ * display to settle before starting the compression. Note that
+ * this delay also serves a second purpose: it allows for a
+ * vblank to pass after disabling the FBC before we attempt
+ * to modify the control registers.
+ *
+ * A more complicated solution would involve tracking vblanks
+ * following the termination of the page-flipping sequence
+ * and indeed performing the enable as a co-routine and not
+ * waiting synchronously upon the vblank.
+ */
+ schedule_delayed_work(&work->work, msecs_to_jiffies(50));
+}
+
+void intel_disable_fbc(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ intel_cancel_fbc_work(dev_priv);
+
+ if (!dev_priv->display.disable_fbc)
+ return;
+
+ dev_priv->display.disable_fbc(dev);
+ dev_priv->cfb_plane = -1;
+}
+
+/**
+ * intel_update_fbc - enable/disable FBC as needed
+ * @dev: the drm_device
+ *
+ * Set up the framebuffer compression hardware at mode set time. We
+ * enable it if possible:
+ * - plane A only (on pre-965)
+ * - no pixel mulitply/line duplication
+ * - no alpha buffer discard
+ * - no dual wide
+ * - framebuffer <= 2048 in width, 1536 in height
+ *
+ * We can't assume that any compression will take place (worst case),
+ * so the compressed buffer has to be the same size as the uncompressed
+ * one. It also must reside (along with the line length buffer) in
+ * stolen memory.
+ *
+ * We need to enable/disable FBC on a global basis.
+ */
+void intel_update_fbc(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_crtc *crtc = NULL, *tmp_crtc;
+ struct intel_crtc *intel_crtc;
+ struct drm_framebuffer *fb;
+ struct intel_framebuffer *intel_fb;
+ struct drm_i915_gem_object *obj;
+ int enable_fbc;
+
+ DRM_DEBUG_KMS("\n");
+
+ if (!i915_powersave)
+ return;
+
+ if (!I915_HAS_FBC(dev))
+ return;
+
+ /*
+ * If FBC is already on, we just have to verify that we can
+ * keep it that way...
+ * Need to disable if:
+ * - more than one pipe is active
+ * - changing FBC params (stride, fence, mode)
+ * - new fb is too large to fit in compressed buffer
+ * - going to an unsupported config (interlace, pixel multiply, etc.)
+ */
+ list_for_each_entry(tmp_crtc, &dev->mode_config.crtc_list, head) {
+ if (tmp_crtc->enabled && tmp_crtc->fb) {
+ if (crtc) {
+ DRM_DEBUG_KMS("more than one pipe active, disabling compression\n");
+ dev_priv->no_fbc_reason = FBC_MULTIPLE_PIPES;
+ goto out_disable;
+ }
+ crtc = tmp_crtc;
+ }
+ }
+
+ if (!crtc || crtc->fb == NULL) {
+ DRM_DEBUG_KMS("no output, disabling\n");
+ dev_priv->no_fbc_reason = FBC_NO_OUTPUT;
+ goto out_disable;
+ }
+
+ intel_crtc = to_intel_crtc(crtc);
+ fb = crtc->fb;
+ intel_fb = to_intel_framebuffer(fb);
+ obj = intel_fb->obj;
+
+ enable_fbc = i915_enable_fbc;
+ if (enable_fbc < 0) {
+ DRM_DEBUG_KMS("fbc set to per-chip default\n");
+ enable_fbc = 1;
+ if (INTEL_INFO(dev)->gen <= 6)
+ enable_fbc = 0;
+ }
+ if (!enable_fbc) {
+ DRM_DEBUG_KMS("fbc disabled per module param\n");
+ dev_priv->no_fbc_reason = FBC_MODULE_PARAM;
+ goto out_disable;
+ }
+ if (intel_fb->obj->base.size > dev_priv->cfb_size) {
+ DRM_DEBUG_KMS("framebuffer too large, disabling "
+ "compression\n");
+ dev_priv->no_fbc_reason = FBC_STOLEN_TOO_SMALL;
+ goto out_disable;
+ }
+ if ((crtc->mode.flags & DRM_MODE_FLAG_INTERLACE) ||
+ (crtc->mode.flags & DRM_MODE_FLAG_DBLSCAN)) {
+ DRM_DEBUG_KMS("mode incompatible with compression, "
+ "disabling\n");
+ dev_priv->no_fbc_reason = FBC_UNSUPPORTED_MODE;
+ goto out_disable;
+ }
+ if ((crtc->mode.hdisplay > 2048) ||
+ (crtc->mode.vdisplay > 1536)) {
+ DRM_DEBUG_KMS("mode too large for compression, disabling\n");
+ dev_priv->no_fbc_reason = FBC_MODE_TOO_LARGE;
+ goto out_disable;
+ }
+ if ((IS_I915GM(dev) || IS_I945GM(dev)) && intel_crtc->plane != 0) {
+ DRM_DEBUG_KMS("plane not 0, disabling compression\n");
+ dev_priv->no_fbc_reason = FBC_BAD_PLANE;
+ goto out_disable;
+ }
+
+ /* The use of a CPU fence is mandatory in order to detect writes
+ * by the CPU to the scanout and trigger updates to the FBC.
+ */
+ if (obj->tiling_mode != I915_TILING_X ||
+ obj->fence_reg == I915_FENCE_REG_NONE) {
+ DRM_DEBUG_KMS("framebuffer not tiled or fenced, disabling compression\n");
+ dev_priv->no_fbc_reason = FBC_NOT_TILED;
+ goto out_disable;
+ }
+
+ /* If the kernel debugger is active, always disable compression */
+ if (in_dbg_master())
+ goto out_disable;
+
+ /* If the scanout has not changed, don't modify the FBC settings.
+ * Note that we make the fundamental assumption that the fb->obj
+ * cannot be unpinned (and have its GTT offset and fence revoked)
+ * without first being decoupled from the scanout and FBC disabled.
+ */
+ if (dev_priv->cfb_plane == intel_crtc->plane &&
+ dev_priv->cfb_fb == fb->base.id &&
+ dev_priv->cfb_y == crtc->y)
+ return;
+
+ if (intel_fbc_enabled(dev)) {
+ /* We update FBC along two paths, after changing fb/crtc
+ * configuration (modeswitching) and after page-flipping
+ * finishes. For the latter, we know that not only did
+ * we disable the FBC at the start of the page-flip
+ * sequence, but also more than one vblank has passed.
+ *
+ * For the former case of modeswitching, it is possible
+ * to switch between two FBC valid configurations
+ * instantaneously so we do need to disable the FBC
+ * before we can modify its control registers. We also
+ * have to wait for the next vblank for that to take
+ * effect. However, since we delay enabling FBC we can
+ * assume that a vblank has passed since disabling and
+ * that we can safely alter the registers in the deferred
+ * callback.
+ *
+ * In the scenario that we go from a valid to invalid
+ * and then back to valid FBC configuration we have
+ * no strict enforcement that a vblank occurred since
+ * disabling the FBC. However, along all current pipe
+ * disabling paths we do need to wait for a vblank at
+ * some point. And we wait before enabling FBC anyway.
+ */
+ DRM_DEBUG_KMS("disabling active FBC for update\n");
+ intel_disable_fbc(dev);
+ }
+
+ intel_enable_fbc(crtc, 500);
+ return;
+
+out_disable:
+ /* Multiple disables should be harmless */
+ if (intel_fbc_enabled(dev)) {
+ DRM_DEBUG_KMS("unsupported config, disabling FBC\n");
+ intel_disable_fbc(dev);
+ }
+}
+
+struct intel_watermark_params {
+ unsigned long fifo_size;
+ unsigned long max_wm;
+ unsigned long default_wm;
+ unsigned long guard_size;
+ unsigned long cacheline_size;
+};
+
+/* Pineview has different values for various configs */
+static const struct intel_watermark_params pineview_display_wm = {
+ PINEVIEW_DISPLAY_FIFO,
+ PINEVIEW_MAX_WM,
+ PINEVIEW_DFT_WM,
+ PINEVIEW_GUARD_WM,
+ PINEVIEW_FIFO_LINE_SIZE
+};
+static const struct intel_watermark_params pineview_display_hplloff_wm = {
+ PINEVIEW_DISPLAY_FIFO,
+ PINEVIEW_MAX_WM,
+ PINEVIEW_DFT_HPLLOFF_WM,
+ PINEVIEW_GUARD_WM,
+ PINEVIEW_FIFO_LINE_SIZE
+};
+static const struct intel_watermark_params pineview_cursor_wm = {
+ PINEVIEW_CURSOR_FIFO,
+ PINEVIEW_CURSOR_MAX_WM,
+ PINEVIEW_CURSOR_DFT_WM,
+ PINEVIEW_CURSOR_GUARD_WM,
+ PINEVIEW_FIFO_LINE_SIZE,
+};
+static const struct intel_watermark_params pineview_cursor_hplloff_wm = {
+ PINEVIEW_CURSOR_FIFO,
+ PINEVIEW_CURSOR_MAX_WM,
+ PINEVIEW_CURSOR_DFT_WM,
+ PINEVIEW_CURSOR_GUARD_WM,
+ PINEVIEW_FIFO_LINE_SIZE
+};
+static const struct intel_watermark_params g4x_wm_info = {
+ G4X_FIFO_SIZE,
+ G4X_MAX_WM,
+ G4X_MAX_WM,
+ 2,
+ G4X_FIFO_LINE_SIZE,
+};
+static const struct intel_watermark_params g4x_cursor_wm_info = {
+ I965_CURSOR_FIFO,
+ I965_CURSOR_MAX_WM,
+ I965_CURSOR_DFT_WM,
+ 2,
+ G4X_FIFO_LINE_SIZE,
+};
+static const struct intel_watermark_params valleyview_wm_info = {
+ VALLEYVIEW_FIFO_SIZE,
+ VALLEYVIEW_MAX_WM,
+ VALLEYVIEW_MAX_WM,
+ 2,
+ G4X_FIFO_LINE_SIZE,
+};
+static const struct intel_watermark_params valleyview_cursor_wm_info = {
+ I965_CURSOR_FIFO,
+ VALLEYVIEW_CURSOR_MAX_WM,
+ I965_CURSOR_DFT_WM,
+ 2,
+ G4X_FIFO_LINE_SIZE,
+};
+static const struct intel_watermark_params i965_cursor_wm_info = {
+ I965_CURSOR_FIFO,
+ I965_CURSOR_MAX_WM,
+ I965_CURSOR_DFT_WM,
+ 2,
+ I915_FIFO_LINE_SIZE,
+};
+static const struct intel_watermark_params i945_wm_info = {
+ I945_FIFO_SIZE,
+ I915_MAX_WM,
+ 1,
+ 2,
+ I915_FIFO_LINE_SIZE
+};
+static const struct intel_watermark_params i915_wm_info = {
+ I915_FIFO_SIZE,
+ I915_MAX_WM,
+ 1,
+ 2,
+ I915_FIFO_LINE_SIZE
+};
+static const struct intel_watermark_params i855_wm_info = {
+ I855GM_FIFO_SIZE,
+ I915_MAX_WM,
+ 1,
+ 2,
+ I830_FIFO_LINE_SIZE
+};
+static const struct intel_watermark_params i830_wm_info = {
+ I830_FIFO_SIZE,
+ I915_MAX_WM,
+ 1,
+ 2,
+ I830_FIFO_LINE_SIZE
+};
+
+static const struct intel_watermark_params ironlake_display_wm_info = {
+ ILK_DISPLAY_FIFO,
+ ILK_DISPLAY_MAXWM,
+ ILK_DISPLAY_DFTWM,
+ 2,
+ ILK_FIFO_LINE_SIZE
+};
+static const struct intel_watermark_params ironlake_cursor_wm_info = {
+ ILK_CURSOR_FIFO,
+ ILK_CURSOR_MAXWM,
+ ILK_CURSOR_DFTWM,
+ 2,
+ ILK_FIFO_LINE_SIZE
+};
+static const struct intel_watermark_params ironlake_display_srwm_info = {
+ ILK_DISPLAY_SR_FIFO,
+ ILK_DISPLAY_MAX_SRWM,
+ ILK_DISPLAY_DFT_SRWM,
+ 2,
+ ILK_FIFO_LINE_SIZE
+};
+static const struct intel_watermark_params ironlake_cursor_srwm_info = {
+ ILK_CURSOR_SR_FIFO,
+ ILK_CURSOR_MAX_SRWM,
+ ILK_CURSOR_DFT_SRWM,
+ 2,
+ ILK_FIFO_LINE_SIZE
+};
+
+static const struct intel_watermark_params sandybridge_display_wm_info = {
+ SNB_DISPLAY_FIFO,
+ SNB_DISPLAY_MAXWM,
+ SNB_DISPLAY_DFTWM,
+ 2,
+ SNB_FIFO_LINE_SIZE
+};
+static const struct intel_watermark_params sandybridge_cursor_wm_info = {
+ SNB_CURSOR_FIFO,
+ SNB_CURSOR_MAXWM,
+ SNB_CURSOR_DFTWM,
+ 2,
+ SNB_FIFO_LINE_SIZE
+};
+static const struct intel_watermark_params sandybridge_display_srwm_info = {
+ SNB_DISPLAY_SR_FIFO,
+ SNB_DISPLAY_MAX_SRWM,
+ SNB_DISPLAY_DFT_SRWM,
+ 2,
+ SNB_FIFO_LINE_SIZE
+};
+static const struct intel_watermark_params sandybridge_cursor_srwm_info = {
+ SNB_CURSOR_SR_FIFO,
+ SNB_CURSOR_MAX_SRWM,
+ SNB_CURSOR_DFT_SRWM,
+ 2,
+ SNB_FIFO_LINE_SIZE
+};
+
+
+/**
+ * intel_calculate_wm - calculate watermark level
+ * @clock_in_khz: pixel clock
+ * @wm: chip FIFO params
+ * @pixel_size: display pixel size
+ * @latency_ns: memory latency for the platform
+ *
+ * Calculate the watermark level (the level at which the display plane will
+ * start fetching from memory again). Each chip has a different display
+ * FIFO size and allocation, so the caller needs to figure that out and pass
+ * in the correct intel_watermark_params structure.
+ *
+ * As the pixel clock runs, the FIFO will be drained at a rate that depends
+ * on the pixel size. When it reaches the watermark level, it'll start
+ * fetching FIFO line sized based chunks from memory until the FIFO fills
+ * past the watermark point. If the FIFO drains completely, a FIFO underrun
+ * will occur, and a display engine hang could result.
+ */
+static unsigned long intel_calculate_wm(unsigned long clock_in_khz,
+ const struct intel_watermark_params *wm,
+ int fifo_size,
+ int pixel_size,
+ unsigned long latency_ns)
+{
+ long entries_required, wm_size;
+
+ /*
+ * Note: we need to make sure we don't overflow for various clock &
+ * latency values.
+ * clocks go from a few thousand to several hundred thousand.
+ * latency is usually a few thousand
+ */
+ entries_required = ((clock_in_khz / 1000) * pixel_size * latency_ns) /
+ 1000;
+ entries_required = DIV_ROUND_UP(entries_required, wm->cacheline_size);
+
+ DRM_DEBUG_KMS("FIFO entries required for mode: %ld\n", entries_required);
+
+ wm_size = fifo_size - (entries_required + wm->guard_size);
+
+ DRM_DEBUG_KMS("FIFO watermark level: %ld\n", wm_size);
+
+ /* Don't promote wm_size to unsigned... */
+ if (wm_size > (long)wm->max_wm)
+ wm_size = wm->max_wm;
+ if (wm_size <= 0)
+ wm_size = wm->default_wm;
+ return wm_size;
+}
+
+static const struct cxsr_latency cxsr_latency_table[] = {
+ {1, 0, 800, 400, 3382, 33382, 3983, 33983}, /* DDR2-400 SC */
+ {1, 0, 800, 667, 3354, 33354, 3807, 33807}, /* DDR2-667 SC */
+ {1, 0, 800, 800, 3347, 33347, 3763, 33763}, /* DDR2-800 SC */
+ {1, 1, 800, 667, 6420, 36420, 6873, 36873}, /* DDR3-667 SC */
+ {1, 1, 800, 800, 5902, 35902, 6318, 36318}, /* DDR3-800 SC */
+
+ {1, 0, 667, 400, 3400, 33400, 4021, 34021}, /* DDR2-400 SC */
+ {1, 0, 667, 667, 3372, 33372, 3845, 33845}, /* DDR2-667 SC */
+ {1, 0, 667, 800, 3386, 33386, 3822, 33822}, /* DDR2-800 SC */
+ {1, 1, 667, 667, 6438, 36438, 6911, 36911}, /* DDR3-667 SC */
+ {1, 1, 667, 800, 5941, 35941, 6377, 36377}, /* DDR3-800 SC */
+
+ {1, 0, 400, 400, 3472, 33472, 4173, 34173}, /* DDR2-400 SC */
+ {1, 0, 400, 667, 3443, 33443, 3996, 33996}, /* DDR2-667 SC */
+ {1, 0, 400, 800, 3430, 33430, 3946, 33946}, /* DDR2-800 SC */
+ {1, 1, 400, 667, 6509, 36509, 7062, 37062}, /* DDR3-667 SC */
+ {1, 1, 400, 800, 5985, 35985, 6501, 36501}, /* DDR3-800 SC */
+
+ {0, 0, 800, 400, 3438, 33438, 4065, 34065}, /* DDR2-400 SC */
+ {0, 0, 800, 667, 3410, 33410, 3889, 33889}, /* DDR2-667 SC */
+ {0, 0, 800, 800, 3403, 33403, 3845, 33845}, /* DDR2-800 SC */
+ {0, 1, 800, 667, 6476, 36476, 6955, 36955}, /* DDR3-667 SC */
+ {0, 1, 800, 800, 5958, 35958, 6400, 36400}, /* DDR3-800 SC */
+
+ {0, 0, 667, 400, 3456, 33456, 4103, 34106}, /* DDR2-400 SC */
+ {0, 0, 667, 667, 3428, 33428, 3927, 33927}, /* DDR2-667 SC */
+ {0, 0, 667, 800, 3443, 33443, 3905, 33905}, /* DDR2-800 SC */
+ {0, 1, 667, 667, 6494, 36494, 6993, 36993}, /* DDR3-667 SC */
+ {0, 1, 667, 800, 5998, 35998, 6460, 36460}, /* DDR3-800 SC */
+
+ {0, 0, 400, 400, 3528, 33528, 4255, 34255}, /* DDR2-400 SC */
+ {0, 0, 400, 667, 3500, 33500, 4079, 34079}, /* DDR2-667 SC */
+ {0, 0, 400, 800, 3487, 33487, 4029, 34029}, /* DDR2-800 SC */
+ {0, 1, 400, 667, 6566, 36566, 7145, 37145}, /* DDR3-667 SC */
+ {0, 1, 400, 800, 6042, 36042, 6584, 36584}, /* DDR3-800 SC */
+};
+
+const struct cxsr_latency *intel_get_cxsr_latency(int is_desktop,
+ int is_ddr3,
+ int fsb,
+ int mem)
+{
+ const struct cxsr_latency *latency;
+ int i;
+
+ if (fsb == 0 || mem == 0)
+ return NULL;
+
+ for (i = 0; i < ARRAY_SIZE(cxsr_latency_table); i++) {
+ latency = &cxsr_latency_table[i];
+ if (is_desktop == latency->is_desktop &&
+ is_ddr3 == latency->is_ddr3 &&
+ fsb == latency->fsb_freq && mem == latency->mem_freq)
+ return latency;
+ }
+
+ DRM_DEBUG_KMS("Unknown FSB/MEM found, disable CxSR\n");
+
+ return NULL;
+}
+
+void pineview_disable_cxsr(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ /* deactivate cxsr */
+ I915_WRITE(DSPFW3, I915_READ(DSPFW3) & ~PINEVIEW_SELF_REFRESH_EN);
+}
+
+/*
+ * Latency for FIFO fetches is dependent on several factors:
+ * - memory configuration (speed, channels)
+ * - chipset
+ * - current MCH state
+ * It can be fairly high in some situations, so here we assume a fairly
+ * pessimal value. It's a tradeoff between extra memory fetches (if we
+ * set this value too high, the FIFO will fetch frequently to stay full)
+ * and power consumption (set it too low to save power and we might see
+ * FIFO underruns and display "flicker").
+ *
+ * A value of 5us seems to be a good balance; safe for very low end
+ * platforms but not overly aggressive on lower latency configs.
+ */
+static const int latency_ns = 5000;
+
+int i9xx_get_fifo_size(struct drm_device *dev, int plane)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ uint32_t dsparb = I915_READ(DSPARB);
+ int size;
+
+ size = dsparb & 0x7f;
+ if (plane)
+ size = ((dsparb >> DSPARB_CSTART_SHIFT) & 0x7f) - size;
+
+ DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb,
+ plane ? "B" : "A", size);
+
+ return size;
+}
+
+int i85x_get_fifo_size(struct drm_device *dev, int plane)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ uint32_t dsparb = I915_READ(DSPARB);
+ int size;
+
+ size = dsparb & 0x1ff;
+ if (plane)
+ size = ((dsparb >> DSPARB_BEND_SHIFT) & 0x1ff) - size;
+ size >>= 1; /* Convert to cachelines */
+
+ DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb,
+ plane ? "B" : "A", size);
+
+ return size;
+}
+
+int i845_get_fifo_size(struct drm_device *dev, int plane)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ uint32_t dsparb = I915_READ(DSPARB);
+ int size;
+
+ size = dsparb & 0x7f;
+ size >>= 2; /* Convert to cachelines */
+
+ DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb,
+ plane ? "B" : "A",
+ size);
+
+ return size;
+}
+
+int i830_get_fifo_size(struct drm_device *dev, int plane)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ uint32_t dsparb = I915_READ(DSPARB);
+ int size;
+
+ size = dsparb & 0x7f;
+ size >>= 1; /* Convert to cachelines */
+
+ DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb,
+ plane ? "B" : "A", size);
+
+ return size;
+}
+
+static struct drm_crtc *single_enabled_crtc(struct drm_device *dev)
+{
+ struct drm_crtc *crtc, *enabled = NULL;
+
+ list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
+ if (crtc->enabled && crtc->fb) {
+ if (enabled)
+ return NULL;
+ enabled = crtc;
+ }
+ }
+
+ return enabled;
+}
+
+void pineview_update_wm(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_crtc *crtc;
+ const struct cxsr_latency *latency;
+ u32 reg;
+ unsigned long wm;
+
+ latency = intel_get_cxsr_latency(IS_PINEVIEW_G(dev), dev_priv->is_ddr3,
+ dev_priv->fsb_freq, dev_priv->mem_freq);
+ if (!latency) {
+ DRM_DEBUG_KMS("Unknown FSB/MEM found, disable CxSR\n");
+ pineview_disable_cxsr(dev);
+ return;
+ }
+
+ crtc = single_enabled_crtc(dev);
+ if (crtc) {
+ int clock = crtc->mode.clock;
+ int pixel_size = crtc->fb->bits_per_pixel / 8;
+
+ /* Display SR */
+ wm = intel_calculate_wm(clock, &pineview_display_wm,
+ pineview_display_wm.fifo_size,
+ pixel_size, latency->display_sr);
+ reg = I915_READ(DSPFW1);
+ reg &= ~DSPFW_SR_MASK;
+ reg |= wm << DSPFW_SR_SHIFT;
+ I915_WRITE(DSPFW1, reg);
+ DRM_DEBUG_KMS("DSPFW1 register is %x\n", reg);
+
+ /* cursor SR */
+ wm = intel_calculate_wm(clock, &pineview_cursor_wm,
+ pineview_display_wm.fifo_size,
+ pixel_size, latency->cursor_sr);
+ reg = I915_READ(DSPFW3);
+ reg &= ~DSPFW_CURSOR_SR_MASK;
+ reg |= (wm & 0x3f) << DSPFW_CURSOR_SR_SHIFT;
+ I915_WRITE(DSPFW3, reg);
+
+ /* Display HPLL off SR */
+ wm = intel_calculate_wm(clock, &pineview_display_hplloff_wm,
+ pineview_display_hplloff_wm.fifo_size,
+ pixel_size, latency->display_hpll_disable);
+ reg = I915_READ(DSPFW3);
+ reg &= ~DSPFW_HPLL_SR_MASK;
+ reg |= wm & DSPFW_HPLL_SR_MASK;
+ I915_WRITE(DSPFW3, reg);
+
+ /* cursor HPLL off SR */
+ wm = intel_calculate_wm(clock, &pineview_cursor_hplloff_wm,
+ pineview_display_hplloff_wm.fifo_size,
+ pixel_size, latency->cursor_hpll_disable);
+ reg = I915_READ(DSPFW3);
+ reg &= ~DSPFW_HPLL_CURSOR_MASK;
+ reg |= (wm & 0x3f) << DSPFW_HPLL_CURSOR_SHIFT;
+ I915_WRITE(DSPFW3, reg);
+ DRM_DEBUG_KMS("DSPFW3 register is %x\n", reg);
+
+ /* activate cxsr */
+ I915_WRITE(DSPFW3,
+ I915_READ(DSPFW3) | PINEVIEW_SELF_REFRESH_EN);
+ DRM_DEBUG_KMS("Self-refresh is enabled\n");
+ } else {
+ pineview_disable_cxsr(dev);
+ DRM_DEBUG_KMS("Self-refresh is disabled\n");
+ }
+}
+
+static bool g4x_compute_wm0(struct drm_device *dev,
+ int plane,
+ const struct intel_watermark_params *display,
+ int display_latency_ns,
+ const struct intel_watermark_params *cursor,
+ int cursor_latency_ns,
+ int *plane_wm,
+ int *cursor_wm)
+{
+ struct drm_crtc *crtc;
+ int htotal, hdisplay, clock, pixel_size;
+ int line_time_us, line_count;
+ int entries, tlb_miss;
+
+ crtc = intel_get_crtc_for_plane(dev, plane);
+ if (crtc->fb == NULL || !crtc->enabled) {
+ *cursor_wm = cursor->guard_size;
+ *plane_wm = display->guard_size;
+ return false;
+ }
+
+ htotal = crtc->mode.htotal;
+ hdisplay = crtc->mode.hdisplay;
+ clock = crtc->mode.clock;
+ pixel_size = crtc->fb->bits_per_pixel / 8;
+
+ /* Use the small buffer method to calculate plane watermark */
+ entries = ((clock * pixel_size / 1000) * display_latency_ns) / 1000;
+ tlb_miss = display->fifo_size*display->cacheline_size - hdisplay * 8;
+ if (tlb_miss > 0)
+ entries += tlb_miss;
+ entries = DIV_ROUND_UP(entries, display->cacheline_size);
+ *plane_wm = entries + display->guard_size;
+ if (*plane_wm > (int)display->max_wm)
+ *plane_wm = display->max_wm;
+
+ /* Use the large buffer method to calculate cursor watermark */
+ line_time_us = ((htotal * 1000) / clock);
+ line_count = (cursor_latency_ns / line_time_us + 1000) / 1000;
+ entries = line_count * 64 * pixel_size;
+ tlb_miss = cursor->fifo_size*cursor->cacheline_size - hdisplay * 8;
+ if (tlb_miss > 0)
+ entries += tlb_miss;
+ entries = DIV_ROUND_UP(entries, cursor->cacheline_size);
+ *cursor_wm = entries + cursor->guard_size;
+ if (*cursor_wm > (int)cursor->max_wm)
+ *cursor_wm = (int)cursor->max_wm;
+
+ return true;
+}
+
+/*
+ * Check the wm result.
+ *
+ * If any calculated watermark values is larger than the maximum value that
+ * can be programmed into the associated watermark register, that watermark
+ * must be disabled.
+ */
+static bool g4x_check_srwm(struct drm_device *dev,
+ int display_wm, int cursor_wm,
+ const struct intel_watermark_params *display,
+ const struct intel_watermark_params *cursor)
+{
+ DRM_DEBUG_KMS("SR watermark: display plane %d, cursor %d\n",
+ display_wm, cursor_wm);
+
+ if (display_wm > display->max_wm) {
+ DRM_DEBUG_KMS("display watermark is too large(%d/%ld), disabling\n",
+ display_wm, display->max_wm);
+ return false;
+ }
+
+ if (cursor_wm > cursor->max_wm) {
+ DRM_DEBUG_KMS("cursor watermark is too large(%d/%ld), disabling\n",
+ cursor_wm, cursor->max_wm);
+ return false;
+ }
+
+ if (!(display_wm || cursor_wm)) {
+ DRM_DEBUG_KMS("SR latency is 0, disabling\n");
+ return false;
+ }
+
+ return true;
+}
+
+static bool g4x_compute_srwm(struct drm_device *dev,
+ int plane,
+ int latency_ns,
+ const struct intel_watermark_params *display,
+ const struct intel_watermark_params *cursor,
+ int *display_wm, int *cursor_wm)
+{
+ struct drm_crtc *crtc;
+ int hdisplay, htotal, pixel_size, clock;
+ unsigned long line_time_us;
+ int line_count, line_size;
+ int small, large;
+ int entries;
+
+ if (!latency_ns) {
+ *display_wm = *cursor_wm = 0;
+ return false;
+ }
+
+ crtc = intel_get_crtc_for_plane(dev, plane);
+ hdisplay = crtc->mode.hdisplay;
+ htotal = crtc->mode.htotal;
+ clock = crtc->mode.clock;
+ pixel_size = crtc->fb->bits_per_pixel / 8;
+
+ line_time_us = (htotal * 1000) / clock;
+ line_count = (latency_ns / line_time_us + 1000) / 1000;
+ line_size = hdisplay * pixel_size;
+
+ /* Use the minimum of the small and large buffer method for primary */
+ small = ((clock * pixel_size / 1000) * latency_ns) / 1000;
+ large = line_count * line_size;
+
+ entries = DIV_ROUND_UP(min(small, large), display->cacheline_size);
+ *display_wm = entries + display->guard_size;
+
+ /* calculate the self-refresh watermark for display cursor */
+ entries = line_count * pixel_size * 64;
+ entries = DIV_ROUND_UP(entries, cursor->cacheline_size);
+ *cursor_wm = entries + cursor->guard_size;
+
+ return g4x_check_srwm(dev,
+ *display_wm, *cursor_wm,
+ display, cursor);
+}
+
+static bool vlv_compute_drain_latency(struct drm_device *dev,
+ int plane,
+ int *plane_prec_mult,
+ int *plane_dl,
+ int *cursor_prec_mult,
+ int *cursor_dl)
+{
+ struct drm_crtc *crtc;
+ int clock, pixel_size;
+ int entries;
+
+ crtc = intel_get_crtc_for_plane(dev, plane);
+ if (crtc->fb == NULL || !crtc->enabled)
+ return false;
+
+ clock = crtc->mode.clock; /* VESA DOT Clock */
+ pixel_size = crtc->fb->bits_per_pixel / 8; /* BPP */
+
+ entries = (clock / 1000) * pixel_size;
+ *plane_prec_mult = (entries > 256) ?
+ DRAIN_LATENCY_PRECISION_32 : DRAIN_LATENCY_PRECISION_16;
+ *plane_dl = (64 * (*plane_prec_mult) * 4) / ((clock / 1000) *
+ pixel_size);
+
+ entries = (clock / 1000) * 4; /* BPP is always 4 for cursor */
+ *cursor_prec_mult = (entries > 256) ?
+ DRAIN_LATENCY_PRECISION_32 : DRAIN_LATENCY_PRECISION_16;
+ *cursor_dl = (64 * (*cursor_prec_mult) * 4) / ((clock / 1000) * 4);
+
+ return true;
+}
+
+/*
+ * Update drain latency registers of memory arbiter
+ *
+ * Valleyview SoC has a new memory arbiter and needs drain latency registers
+ * to be programmed. Each plane has a drain latency multiplier and a drain
+ * latency value.
+ */
+
+static void vlv_update_drain_latency(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ int planea_prec, planea_dl, planeb_prec, planeb_dl;
+ int cursora_prec, cursora_dl, cursorb_prec, cursorb_dl;
+ int plane_prec_mult, cursor_prec_mult; /* Precision multiplier is
+ either 16 or 32 */
+
+ /* For plane A, Cursor A */
+ if (vlv_compute_drain_latency(dev, 0, &plane_prec_mult, &planea_dl,
+ &cursor_prec_mult, &cursora_dl)) {
+ cursora_prec = (cursor_prec_mult == DRAIN_LATENCY_PRECISION_32) ?
+ DDL_CURSORA_PRECISION_32 : DDL_CURSORA_PRECISION_16;
+ planea_prec = (plane_prec_mult == DRAIN_LATENCY_PRECISION_32) ?
+ DDL_PLANEA_PRECISION_32 : DDL_PLANEA_PRECISION_16;
+
+ I915_WRITE(VLV_DDL1, cursora_prec |
+ (cursora_dl << DDL_CURSORA_SHIFT) |
+ planea_prec | planea_dl);
+ }
+
+ /* For plane B, Cursor B */
+ if (vlv_compute_drain_latency(dev, 1, &plane_prec_mult, &planeb_dl,
+ &cursor_prec_mult, &cursorb_dl)) {
+ cursorb_prec = (cursor_prec_mult == DRAIN_LATENCY_PRECISION_32) ?
+ DDL_CURSORB_PRECISION_32 : DDL_CURSORB_PRECISION_16;
+ planeb_prec = (plane_prec_mult == DRAIN_LATENCY_PRECISION_32) ?
+ DDL_PLANEB_PRECISION_32 : DDL_PLANEB_PRECISION_16;
+
+ I915_WRITE(VLV_DDL2, cursorb_prec |
+ (cursorb_dl << DDL_CURSORB_SHIFT) |
+ planeb_prec | planeb_dl);
+ }
+}
+
+#define single_plane_enabled(mask) is_power_of_2(mask)
+
+void valleyview_update_wm(struct drm_device *dev)
+{
+ static const int sr_latency_ns = 12000;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ int planea_wm, planeb_wm, cursora_wm, cursorb_wm;
+ int plane_sr, cursor_sr;
+ unsigned int enabled = 0;
+
+ vlv_update_drain_latency(dev);
+
+ if (g4x_compute_wm0(dev, 0,
+ &valleyview_wm_info, latency_ns,
+ &valleyview_cursor_wm_info, latency_ns,
+ &planea_wm, &cursora_wm))
+ enabled |= 1;
+
+ if (g4x_compute_wm0(dev, 1,
+ &valleyview_wm_info, latency_ns,
+ &valleyview_cursor_wm_info, latency_ns,
+ &planeb_wm, &cursorb_wm))
+ enabled |= 2;
+
+ plane_sr = cursor_sr = 0;
+ if (single_plane_enabled(enabled) &&
+ g4x_compute_srwm(dev, ffs(enabled) - 1,
+ sr_latency_ns,
+ &valleyview_wm_info,
+ &valleyview_cursor_wm_info,
+ &plane_sr, &cursor_sr))
+ I915_WRITE(FW_BLC_SELF_VLV, FW_CSPWRDWNEN);
+ else
+ I915_WRITE(FW_BLC_SELF_VLV,
+ I915_READ(FW_BLC_SELF_VLV) & ~FW_CSPWRDWNEN);
+
+ DRM_DEBUG_KMS("Setting FIFO watermarks - A: plane=%d, cursor=%d, B: plane=%d, cursor=%d, SR: plane=%d, cursor=%d\n",
+ planea_wm, cursora_wm,
+ planeb_wm, cursorb_wm,
+ plane_sr, cursor_sr);
+
+ I915_WRITE(DSPFW1,
+ (plane_sr << DSPFW_SR_SHIFT) |
+ (cursorb_wm << DSPFW_CURSORB_SHIFT) |
+ (planeb_wm << DSPFW_PLANEB_SHIFT) |
+ planea_wm);
+ I915_WRITE(DSPFW2,
+ (I915_READ(DSPFW2) & DSPFW_CURSORA_MASK) |
+ (cursora_wm << DSPFW_CURSORA_SHIFT));
+ I915_WRITE(DSPFW3,
+ (I915_READ(DSPFW3) | (cursor_sr << DSPFW_CURSOR_SR_SHIFT)));
+}
+
+void g4x_update_wm(struct drm_device *dev)
+{
+ static const int sr_latency_ns = 12000;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ int planea_wm, planeb_wm, cursora_wm, cursorb_wm;
+ int plane_sr, cursor_sr;
+ unsigned int enabled = 0;
+
+ if (g4x_compute_wm0(dev, 0,
+ &g4x_wm_info, latency_ns,
+ &g4x_cursor_wm_info, latency_ns,
+ &planea_wm, &cursora_wm))
+ enabled |= 1;
+
+ if (g4x_compute_wm0(dev, 1,
+ &g4x_wm_info, latency_ns,
+ &g4x_cursor_wm_info, latency_ns,
+ &planeb_wm, &cursorb_wm))
+ enabled |= 2;
+
+ plane_sr = cursor_sr = 0;
+ if (single_plane_enabled(enabled) &&
+ g4x_compute_srwm(dev, ffs(enabled) - 1,
+ sr_latency_ns,
+ &g4x_wm_info,
+ &g4x_cursor_wm_info,
+ &plane_sr, &cursor_sr))
+ I915_WRITE(FW_BLC_SELF, FW_BLC_SELF_EN);
+ else
+ I915_WRITE(FW_BLC_SELF,
+ I915_READ(FW_BLC_SELF) & ~FW_BLC_SELF_EN);
+
+ DRM_DEBUG_KMS("Setting FIFO watermarks - A: plane=%d, cursor=%d, B: plane=%d, cursor=%d, SR: plane=%d, cursor=%d\n",
+ planea_wm, cursora_wm,
+ planeb_wm, cursorb_wm,
+ plane_sr, cursor_sr);
+
+ I915_WRITE(DSPFW1,
+ (plane_sr << DSPFW_SR_SHIFT) |
+ (cursorb_wm << DSPFW_CURSORB_SHIFT) |
+ (planeb_wm << DSPFW_PLANEB_SHIFT) |
+ planea_wm);
+ I915_WRITE(DSPFW2,
+ (I915_READ(DSPFW2) & DSPFW_CURSORA_MASK) |
+ (cursora_wm << DSPFW_CURSORA_SHIFT));
+ /* HPLL off in SR has some issues on G4x... disable it */
+ I915_WRITE(DSPFW3,
+ (I915_READ(DSPFW3) & ~DSPFW_HPLL_SR_EN) |
+ (cursor_sr << DSPFW_CURSOR_SR_SHIFT));
+}
+
+void i965_update_wm(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_crtc *crtc;
+ int srwm = 1;
+ int cursor_sr = 16;
+
+ /* Calc sr entries for one plane configs */
+ crtc = single_enabled_crtc(dev);
+ if (crtc) {
+ /* self-refresh has much higher latency */
+ static const int sr_latency_ns = 12000;
+ int clock = crtc->mode.clock;
+ int htotal = crtc->mode.htotal;
+ int hdisplay = crtc->mode.hdisplay;
+ int pixel_size = crtc->fb->bits_per_pixel / 8;
+ unsigned long line_time_us;
+ int entries;
+
+ line_time_us = ((htotal * 1000) / clock);
+
+ /* Use ns/us then divide to preserve precision */
+ entries = (((sr_latency_ns / line_time_us) + 1000) / 1000) *
+ pixel_size * hdisplay;
+ entries = DIV_ROUND_UP(entries, I915_FIFO_LINE_SIZE);
+ srwm = I965_FIFO_SIZE - entries;
+ if (srwm < 0)
+ srwm = 1;
+ srwm &= 0x1ff;
+ DRM_DEBUG_KMS("self-refresh entries: %d, wm: %d\n",
+ entries, srwm);
+
+ entries = (((sr_latency_ns / line_time_us) + 1000) / 1000) *
+ pixel_size * 64;
+ entries = DIV_ROUND_UP(entries,
+ i965_cursor_wm_info.cacheline_size);
+ cursor_sr = i965_cursor_wm_info.fifo_size -
+ (entries + i965_cursor_wm_info.guard_size);
+
+ if (cursor_sr > i965_cursor_wm_info.max_wm)
+ cursor_sr = i965_cursor_wm_info.max_wm;
+
+ DRM_DEBUG_KMS("self-refresh watermark: display plane %d "
+ "cursor %d\n", srwm, cursor_sr);
+
+ if (IS_CRESTLINE(dev))
+ I915_WRITE(FW_BLC_SELF, FW_BLC_SELF_EN);
+ } else {
+ /* Turn off self refresh if both pipes are enabled */
+ if (IS_CRESTLINE(dev))
+ I915_WRITE(FW_BLC_SELF, I915_READ(FW_BLC_SELF)
+ & ~FW_BLC_SELF_EN);
+ }
+
+ DRM_DEBUG_KMS("Setting FIFO watermarks - A: 8, B: 8, C: 8, SR %d\n",
+ srwm);
+
+ /* 965 has limitations... */
+ I915_WRITE(DSPFW1, (srwm << DSPFW_SR_SHIFT) |
+ (8 << 16) | (8 << 8) | (8 << 0));
+ I915_WRITE(DSPFW2, (8 << 8) | (8 << 0));
+ /* update cursor SR watermark */
+ I915_WRITE(DSPFW3, (cursor_sr << DSPFW_CURSOR_SR_SHIFT));
+}
+
+void i9xx_update_wm(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ const struct intel_watermark_params *wm_info;
+ uint32_t fwater_lo;
+ uint32_t fwater_hi;
+ int cwm, srwm = 1;
+ int fifo_size;
+ int planea_wm, planeb_wm;
+ struct drm_crtc *crtc, *enabled = NULL;
+
+ if (IS_I945GM(dev))
+ wm_info = &i945_wm_info;
+ else if (!IS_GEN2(dev))
+ wm_info = &i915_wm_info;
+ else
+ wm_info = &i855_wm_info;
+
+ fifo_size = dev_priv->display.get_fifo_size(dev, 0);
+ crtc = intel_get_crtc_for_plane(dev, 0);
+ if (crtc->enabled && crtc->fb) {
+ planea_wm = intel_calculate_wm(crtc->mode.clock,
+ wm_info, fifo_size,
+ crtc->fb->bits_per_pixel / 8,
+ latency_ns);
+ enabled = crtc;
+ } else
+ planea_wm = fifo_size - wm_info->guard_size;
+
+ fifo_size = dev_priv->display.get_fifo_size(dev, 1);
+ crtc = intel_get_crtc_for_plane(dev, 1);
+ if (crtc->enabled && crtc->fb) {
+ planeb_wm = intel_calculate_wm(crtc->mode.clock,
+ wm_info, fifo_size,
+ crtc->fb->bits_per_pixel / 8,
+ latency_ns);
+ if (enabled == NULL)
+ enabled = crtc;
+ else
+ enabled = NULL;
+ } else
+ planeb_wm = fifo_size - wm_info->guard_size;
+
+ DRM_DEBUG_KMS("FIFO watermarks - A: %d, B: %d\n", planea_wm, planeb_wm);
+
+ /*
+ * Overlay gets an aggressive default since video jitter is bad.
+ */
+ cwm = 2;
+
+ /* Play safe and disable self-refresh before adjusting watermarks. */
+ if (IS_I945G(dev) || IS_I945GM(dev))
+ I915_WRITE(FW_BLC_SELF, FW_BLC_SELF_EN_MASK | 0);
+ else if (IS_I915GM(dev))
+ I915_WRITE(INSTPM, I915_READ(INSTPM) & ~INSTPM_SELF_EN);
+
+ /* Calc sr entries for one plane configs */
+ if (HAS_FW_BLC(dev) && enabled) {
+ /* self-refresh has much higher latency */
+ static const int sr_latency_ns = 6000;
+ int clock = enabled->mode.clock;
+ int htotal = enabled->mode.htotal;
+ int hdisplay = enabled->mode.hdisplay;
+ int pixel_size = enabled->fb->bits_per_pixel / 8;
+ unsigned long line_time_us;
+ int entries;
+
+ line_time_us = (htotal * 1000) / clock;
+
+ /* Use ns/us then divide to preserve precision */
+ entries = (((sr_latency_ns / line_time_us) + 1000) / 1000) *
+ pixel_size * hdisplay;
+ entries = DIV_ROUND_UP(entries, wm_info->cacheline_size);
+ DRM_DEBUG_KMS("self-refresh entries: %d\n", entries);
+ srwm = wm_info->fifo_size - entries;
+ if (srwm < 0)
+ srwm = 1;
+
+ if (IS_I945G(dev) || IS_I945GM(dev))
+ I915_WRITE(FW_BLC_SELF,
+ FW_BLC_SELF_FIFO_MASK | (srwm & 0xff));
+ else if (IS_I915GM(dev))
+ I915_WRITE(FW_BLC_SELF, srwm & 0x3f);
+ }
+
+ DRM_DEBUG_KMS("Setting FIFO watermarks - A: %d, B: %d, C: %d, SR %d\n",
+ planea_wm, planeb_wm, cwm, srwm);
+
+ fwater_lo = ((planeb_wm & 0x3f) << 16) | (planea_wm & 0x3f);
+ fwater_hi = (cwm & 0x1f);
+
+ /* Set request length to 8 cachelines per fetch */
+ fwater_lo = fwater_lo | (1 << 24) | (1 << 8);
+ fwater_hi = fwater_hi | (1 << 8);
+
+ I915_WRITE(FW_BLC, fwater_lo);
+ I915_WRITE(FW_BLC2, fwater_hi);
+
+ if (HAS_FW_BLC(dev)) {
+ if (enabled) {
+ if (IS_I945G(dev) || IS_I945GM(dev))
+ I915_WRITE(FW_BLC_SELF,
+ FW_BLC_SELF_EN_MASK | FW_BLC_SELF_EN);
+ else if (IS_I915GM(dev))
+ I915_WRITE(INSTPM, I915_READ(INSTPM) | INSTPM_SELF_EN);
+ DRM_DEBUG_KMS("memory self refresh enabled\n");
+ } else
+ DRM_DEBUG_KMS("memory self refresh disabled\n");
+ }
+}
+
+void i830_update_wm(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_crtc *crtc;
+ uint32_t fwater_lo;
+ int planea_wm;
+
+ crtc = single_enabled_crtc(dev);
+ if (crtc == NULL)
+ return;
+
+ planea_wm = intel_calculate_wm(crtc->mode.clock, &i830_wm_info,
+ dev_priv->display.get_fifo_size(dev, 0),
+ crtc->fb->bits_per_pixel / 8,
+ latency_ns);
+ fwater_lo = I915_READ(FW_BLC) & ~0xfff;
+ fwater_lo |= (3<<8) | planea_wm;
+
+ DRM_DEBUG_KMS("Setting FIFO watermarks - A: %d\n", planea_wm);
+
+ I915_WRITE(FW_BLC, fwater_lo);
+}
+
+#define ILK_LP0_PLANE_LATENCY 700
+#define ILK_LP0_CURSOR_LATENCY 1300
+
+/*
+ * Check the wm result.
+ *
+ * If any calculated watermark values is larger than the maximum value that
+ * can be programmed into the associated watermark register, that watermark
+ * must be disabled.
+ */
+static bool ironlake_check_srwm(struct drm_device *dev, int level,
+ int fbc_wm, int display_wm, int cursor_wm,
+ const struct intel_watermark_params *display,
+ const struct intel_watermark_params *cursor)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ DRM_DEBUG_KMS("watermark %d: display plane %d, fbc lines %d,"
+ " cursor %d\n", level, display_wm, fbc_wm, cursor_wm);
+
+ if (fbc_wm > SNB_FBC_MAX_SRWM) {
+ DRM_DEBUG_KMS("fbc watermark(%d) is too large(%d), disabling wm%d+\n",
+ fbc_wm, SNB_FBC_MAX_SRWM, level);
+
+ /* fbc has it's own way to disable FBC WM */
+ I915_WRITE(DISP_ARB_CTL,
+ I915_READ(DISP_ARB_CTL) | DISP_FBC_WM_DIS);
+ return false;
+ }
+
+ if (display_wm > display->max_wm) {
+ DRM_DEBUG_KMS("display watermark(%d) is too large(%d), disabling wm%d+\n",
+ display_wm, SNB_DISPLAY_MAX_SRWM, level);
+ return false;
+ }
+
+ if (cursor_wm > cursor->max_wm) {
+ DRM_DEBUG_KMS("cursor watermark(%d) is too large(%d), disabling wm%d+\n",
+ cursor_wm, SNB_CURSOR_MAX_SRWM, level);
+ return false;
+ }
+
+ if (!(fbc_wm || display_wm || cursor_wm)) {
+ DRM_DEBUG_KMS("latency %d is 0, disabling wm%d+\n", level, level);
+ return false;
+ }
+
+ return true;
+}
+
+/*
+ * Compute watermark values of WM[1-3],
+ */
+static bool ironlake_compute_srwm(struct drm_device *dev, int level, int plane,
+ int latency_ns,
+ const struct intel_watermark_params *display,
+ const struct intel_watermark_params *cursor,
+ int *fbc_wm, int *display_wm, int *cursor_wm)
+{
+ struct drm_crtc *crtc;
+ unsigned long line_time_us;
+ int hdisplay, htotal, pixel_size, clock;
+ int line_count, line_size;
+ int small, large;
+ int entries;
+
+ if (!latency_ns) {
+ *fbc_wm = *display_wm = *cursor_wm = 0;
+ return false;
+ }
+
+ crtc = intel_get_crtc_for_plane(dev, plane);
+ hdisplay = crtc->mode.hdisplay;
+ htotal = crtc->mode.htotal;
+ clock = crtc->mode.clock;
+ pixel_size = crtc->fb->bits_per_pixel / 8;
+
+ line_time_us = (htotal * 1000) / clock;
+ line_count = (latency_ns / line_time_us + 1000) / 1000;
+ line_size = hdisplay * pixel_size;
+
+ /* Use the minimum of the small and large buffer method for primary */
+ small = ((clock * pixel_size / 1000) * latency_ns) / 1000;
+ large = line_count * line_size;
+
+ entries = DIV_ROUND_UP(min(small, large), display->cacheline_size);
+ *display_wm = entries + display->guard_size;
+
+ /*
+ * Spec says:
+ * FBC WM = ((Final Primary WM * 64) / number of bytes per line) + 2
+ */
+ *fbc_wm = DIV_ROUND_UP(*display_wm * 64, line_size) + 2;
+
+ /* calculate the self-refresh watermark for display cursor */
+ entries = line_count * pixel_size * 64;
+ entries = DIV_ROUND_UP(entries, cursor->cacheline_size);
+ *cursor_wm = entries + cursor->guard_size;
+
+ return ironlake_check_srwm(dev, level,
+ *fbc_wm, *display_wm, *cursor_wm,
+ display, cursor);
+}
+
+void ironlake_update_wm(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ int fbc_wm, plane_wm, cursor_wm;
+ unsigned int enabled;
+
+ enabled = 0;
+ if (g4x_compute_wm0(dev, 0,
+ &ironlake_display_wm_info,
+ ILK_LP0_PLANE_LATENCY,
+ &ironlake_cursor_wm_info,
+ ILK_LP0_CURSOR_LATENCY,
+ &plane_wm, &cursor_wm)) {
+ I915_WRITE(WM0_PIPEA_ILK,
+ (plane_wm << WM0_PIPE_PLANE_SHIFT) | cursor_wm);
+ DRM_DEBUG_KMS("FIFO watermarks For pipe A -"
+ " plane %d, " "cursor: %d\n",
+ plane_wm, cursor_wm);
+ enabled |= 1;
+ }
+
+ if (g4x_compute_wm0(dev, 1,
+ &ironlake_display_wm_info,
+ ILK_LP0_PLANE_LATENCY,
+ &ironlake_cursor_wm_info,
+ ILK_LP0_CURSOR_LATENCY,
+ &plane_wm, &cursor_wm)) {
+ I915_WRITE(WM0_PIPEB_ILK,
+ (plane_wm << WM0_PIPE_PLANE_SHIFT) | cursor_wm);
+ DRM_DEBUG_KMS("FIFO watermarks For pipe B -"
+ " plane %d, cursor: %d\n",
+ plane_wm, cursor_wm);
+ enabled |= 2;
+ }
+
+ /*
+ * Calculate and update the self-refresh watermark only when one
+ * display plane is used.
+ */
+ I915_WRITE(WM3_LP_ILK, 0);
+ I915_WRITE(WM2_LP_ILK, 0);
+ I915_WRITE(WM1_LP_ILK, 0);
+
+ if (!single_plane_enabled(enabled))
+ return;
+ enabled = ffs(enabled) - 1;
+
+ /* WM1 */
+ if (!ironlake_compute_srwm(dev, 1, enabled,
+ ILK_READ_WM1_LATENCY() * 500,
+ &ironlake_display_srwm_info,
+ &ironlake_cursor_srwm_info,
+ &fbc_wm, &plane_wm, &cursor_wm))
+ return;
+
+ I915_WRITE(WM1_LP_ILK,
+ WM1_LP_SR_EN |
+ (ILK_READ_WM1_LATENCY() << WM1_LP_LATENCY_SHIFT) |
+ (fbc_wm << WM1_LP_FBC_SHIFT) |
+ (plane_wm << WM1_LP_SR_SHIFT) |
+ cursor_wm);
+
+ /* WM2 */
+ if (!ironlake_compute_srwm(dev, 2, enabled,
+ ILK_READ_WM2_LATENCY() * 500,
+ &ironlake_display_srwm_info,
+ &ironlake_cursor_srwm_info,
+ &fbc_wm, &plane_wm, &cursor_wm))
+ return;
+
+ I915_WRITE(WM2_LP_ILK,
+ WM2_LP_EN |
+ (ILK_READ_WM2_LATENCY() << WM1_LP_LATENCY_SHIFT) |
+ (fbc_wm << WM1_LP_FBC_SHIFT) |
+ (plane_wm << WM1_LP_SR_SHIFT) |
+ cursor_wm);
+
+ /*
+ * WM3 is unsupported on ILK, probably because we don't have latency
+ * data for that power state
+ */
+}
+
+void sandybridge_update_wm(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ int latency = SNB_READ_WM0_LATENCY() * 100; /* In unit 0.1us */
+ u32 val;
+ int fbc_wm, plane_wm, cursor_wm;
+ unsigned int enabled;
+
+ enabled = 0;
+ if (g4x_compute_wm0(dev, 0,
+ &sandybridge_display_wm_info, latency,
+ &sandybridge_cursor_wm_info, latency,
+ &plane_wm, &cursor_wm)) {
+ val = I915_READ(WM0_PIPEA_ILK);
+ val &= ~(WM0_PIPE_PLANE_MASK | WM0_PIPE_CURSOR_MASK);
+ I915_WRITE(WM0_PIPEA_ILK, val |
+ ((plane_wm << WM0_PIPE_PLANE_SHIFT) | cursor_wm));
+ DRM_DEBUG_KMS("FIFO watermarks For pipe A -"
+ " plane %d, " "cursor: %d\n",
+ plane_wm, cursor_wm);
+ enabled |= 1;
+ }
+
+ if (g4x_compute_wm0(dev, 1,
+ &sandybridge_display_wm_info, latency,
+ &sandybridge_cursor_wm_info, latency,
+ &plane_wm, &cursor_wm)) {
+ val = I915_READ(WM0_PIPEB_ILK);
+ val &= ~(WM0_PIPE_PLANE_MASK | WM0_PIPE_CURSOR_MASK);
+ I915_WRITE(WM0_PIPEB_ILK, val |
+ ((plane_wm << WM0_PIPE_PLANE_SHIFT) | cursor_wm));
+ DRM_DEBUG_KMS("FIFO watermarks For pipe B -"
+ " plane %d, cursor: %d\n",
+ plane_wm, cursor_wm);
+ enabled |= 2;
+ }
+
+ /* IVB has 3 pipes */
+ if (IS_IVYBRIDGE(dev) &&
+ g4x_compute_wm0(dev, 2,
+ &sandybridge_display_wm_info, latency,
+ &sandybridge_cursor_wm_info, latency,
+ &plane_wm, &cursor_wm)) {
+ val = I915_READ(WM0_PIPEC_IVB);
+ val &= ~(WM0_PIPE_PLANE_MASK | WM0_PIPE_CURSOR_MASK);
+ I915_WRITE(WM0_PIPEC_IVB, val |
+ ((plane_wm << WM0_PIPE_PLANE_SHIFT) | cursor_wm));
+ DRM_DEBUG_KMS("FIFO watermarks For pipe C -"
+ " plane %d, cursor: %d\n",
+ plane_wm, cursor_wm);
+ enabled |= 3;
+ }
+
+ /*
+ * Calculate and update the self-refresh watermark only when one
+ * display plane is used.
+ *
+ * SNB support 3 levels of watermark.
+ *
+ * WM1/WM2/WM2 watermarks have to be enabled in the ascending order,
+ * and disabled in the descending order
+ *
+ */
+ I915_WRITE(WM3_LP_ILK, 0);
+ I915_WRITE(WM2_LP_ILK, 0);
+ I915_WRITE(WM1_LP_ILK, 0);
+
+ if (!single_plane_enabled(enabled) ||
+ dev_priv->sprite_scaling_enabled)
+ return;
+ enabled = ffs(enabled) - 1;
+
+ /* WM1 */
+ if (!ironlake_compute_srwm(dev, 1, enabled,
+ SNB_READ_WM1_LATENCY() * 500,
+ &sandybridge_display_srwm_info,
+ &sandybridge_cursor_srwm_info,
+ &fbc_wm, &plane_wm, &cursor_wm))
+ return;
+
+ I915_WRITE(WM1_LP_ILK,
+ WM1_LP_SR_EN |
+ (SNB_READ_WM1_LATENCY() << WM1_LP_LATENCY_SHIFT) |
+ (fbc_wm << WM1_LP_FBC_SHIFT) |
+ (plane_wm << WM1_LP_SR_SHIFT) |
+ cursor_wm);
+
+ /* WM2 */
+ if (!ironlake_compute_srwm(dev, 2, enabled,
+ SNB_READ_WM2_LATENCY() * 500,
+ &sandybridge_display_srwm_info,
+ &sandybridge_cursor_srwm_info,
+ &fbc_wm, &plane_wm, &cursor_wm))
+ return;
+
+ I915_WRITE(WM2_LP_ILK,
+ WM2_LP_EN |
+ (SNB_READ_WM2_LATENCY() << WM1_LP_LATENCY_SHIFT) |
+ (fbc_wm << WM1_LP_FBC_SHIFT) |
+ (plane_wm << WM1_LP_SR_SHIFT) |
+ cursor_wm);
+
+ /* WM3 */
+ if (!ironlake_compute_srwm(dev, 3, enabled,
+ SNB_READ_WM3_LATENCY() * 500,
+ &sandybridge_display_srwm_info,
+ &sandybridge_cursor_srwm_info,
+ &fbc_wm, &plane_wm, &cursor_wm))
+ return;
+
+ I915_WRITE(WM3_LP_ILK,
+ WM3_LP_EN |
+ (SNB_READ_WM3_LATENCY() << WM1_LP_LATENCY_SHIFT) |
+ (fbc_wm << WM1_LP_FBC_SHIFT) |
+ (plane_wm << WM1_LP_SR_SHIFT) |
+ cursor_wm);
+}
+
+static bool
+sandybridge_compute_sprite_wm(struct drm_device *dev, int plane,
+ uint32_t sprite_width, int pixel_size,
+ const struct intel_watermark_params *display,
+ int display_latency_ns, int *sprite_wm)
+{
+ struct drm_crtc *crtc;
+ int clock;
+ int entries, tlb_miss;
+
+ crtc = intel_get_crtc_for_plane(dev, plane);
+ if (crtc->fb == NULL || !crtc->enabled) {
+ *sprite_wm = display->guard_size;
+ return false;
+ }
+
+ clock = crtc->mode.clock;
+
+ /* Use the small buffer method to calculate the sprite watermark */
+ entries = ((clock * pixel_size / 1000) * display_latency_ns) / 1000;
+ tlb_miss = display->fifo_size*display->cacheline_size -
+ sprite_width * 8;
+ if (tlb_miss > 0)
+ entries += tlb_miss;
+ entries = DIV_ROUND_UP(entries, display->cacheline_size);
+ *sprite_wm = entries + display->guard_size;
+ if (*sprite_wm > (int)display->max_wm)
+ *sprite_wm = display->max_wm;
+
+ return true;
+}
+
+static bool
+sandybridge_compute_sprite_srwm(struct drm_device *dev, int plane,
+ uint32_t sprite_width, int pixel_size,
+ const struct intel_watermark_params *display,
+ int latency_ns, int *sprite_wm)
+{
+ struct drm_crtc *crtc;
+ unsigned long line_time_us;
+ int clock;
+ int line_count, line_size;
+ int small, large;
+ int entries;
+
+ if (!latency_ns) {
+ *sprite_wm = 0;
+ return false;
+ }
+
+ crtc = intel_get_crtc_for_plane(dev, plane);
+ clock = crtc->mode.clock;
+ if (!clock) {
+ *sprite_wm = 0;
+ return false;
+ }
+
+ line_time_us = (sprite_width * 1000) / clock;
+ if (!line_time_us) {
+ *sprite_wm = 0;
+ return false;
+ }
+
+ line_count = (latency_ns / line_time_us + 1000) / 1000;
+ line_size = sprite_width * pixel_size;
+
+ /* Use the minimum of the small and large buffer method for primary */
+ small = ((clock * pixel_size / 1000) * latency_ns) / 1000;
+ large = line_count * line_size;
+
+ entries = DIV_ROUND_UP(min(small, large), display->cacheline_size);
+ *sprite_wm = entries + display->guard_size;
+
+ return *sprite_wm > 0x3ff ? false : true;
+}
+
+void sandybridge_update_sprite_wm(struct drm_device *dev, int pipe,
+ uint32_t sprite_width, int pixel_size)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ int latency = SNB_READ_WM0_LATENCY() * 100; /* In unit 0.1us */
+ u32 val;
+ int sprite_wm, reg;
+ int ret;
+
+ switch (pipe) {
+ case 0:
+ reg = WM0_PIPEA_ILK;
+ break;
+ case 1:
+ reg = WM0_PIPEB_ILK;
+ break;
+ case 2:
+ reg = WM0_PIPEC_IVB;
+ break;
+ default:
+ return; /* bad pipe */
+ }
+
+ ret = sandybridge_compute_sprite_wm(dev, pipe, sprite_width, pixel_size,
+ &sandybridge_display_wm_info,
+ latency, &sprite_wm);
+ if (!ret) {
+ DRM_DEBUG_KMS("failed to compute sprite wm for pipe %d\n",
+ pipe);
+ return;
+ }
+
+ val = I915_READ(reg);
+ val &= ~WM0_PIPE_SPRITE_MASK;
+ I915_WRITE(reg, val | (sprite_wm << WM0_PIPE_SPRITE_SHIFT));
+ DRM_DEBUG_KMS("sprite watermarks For pipe %d - %d\n", pipe, sprite_wm);
+
+
+ ret = sandybridge_compute_sprite_srwm(dev, pipe, sprite_width,
+ pixel_size,
+ &sandybridge_display_srwm_info,
+ SNB_READ_WM1_LATENCY() * 500,
+ &sprite_wm);
+ if (!ret) {
+ DRM_DEBUG_KMS("failed to compute sprite lp1 wm on pipe %d\n",
+ pipe);
+ return;
+ }
+ I915_WRITE(WM1S_LP_ILK, sprite_wm);
+
+ /* Only IVB has two more LP watermarks for sprite */
+ if (!IS_IVYBRIDGE(dev))
+ return;
+
+ ret = sandybridge_compute_sprite_srwm(dev, pipe, sprite_width,
+ pixel_size,
+ &sandybridge_display_srwm_info,
+ SNB_READ_WM2_LATENCY() * 500,
+ &sprite_wm);
+ if (!ret) {
+ DRM_DEBUG_KMS("failed to compute sprite lp2 wm on pipe %d\n",
+ pipe);
+ return;
+ }
+ I915_WRITE(WM2S_LP_IVB, sprite_wm);
+
+ ret = sandybridge_compute_sprite_srwm(dev, pipe, sprite_width,
+ pixel_size,
+ &sandybridge_display_srwm_info,
+ SNB_READ_WM3_LATENCY() * 500,
+ &sprite_wm);
+ if (!ret) {
+ DRM_DEBUG_KMS("failed to compute sprite lp3 wm on pipe %d\n",
+ pipe);
+ return;
+ }
+ I915_WRITE(WM3S_LP_IVB, sprite_wm);
+}
+
+/**
+ * intel_update_watermarks - update FIFO watermark values based on current modes
+ *
+ * Calculate watermark values for the various WM regs based on current mode
+ * and plane configuration.
+ *
+ * There are several cases to deal with here:
+ * - normal (i.e. non-self-refresh)
+ * - self-refresh (SR) mode
+ * - lines are large relative to FIFO size (buffer can hold up to 2)
+ * - lines are small relative to FIFO size (buffer can hold more than 2
+ * lines), so need to account for TLB latency
+ *
+ * The normal calculation is:
+ * watermark = dotclock * bytes per pixel * latency
+ * where latency is platform & configuration dependent (we assume pessimal
+ * values here).
+ *
+ * The SR calculation is:
+ * watermark = (trunc(latency/line time)+1) * surface width *
+ * bytes per pixel
+ * where
+ * line time = htotal / dotclock
+ * surface width = hdisplay for normal plane and 64 for cursor
+ * and latency is assumed to be high, as above.
+ *
+ * The final value programmed to the register should always be rounded up,
+ * and include an extra 2 entries to account for clock crossings.
+ *
+ * We don't use the sprite, so we can ignore that. And on Crestline we have
+ * to set the non-SR watermarks to 8.
+ */
+void intel_update_watermarks(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ if (dev_priv->display.update_wm)
+ dev_priv->display.update_wm(dev);
+}
+
+void intel_update_sprite_watermarks(struct drm_device *dev, int pipe,
+ uint32_t sprite_width, int pixel_size)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ if (dev_priv->display.update_sprite_wm)
+ dev_priv->display.update_sprite_wm(dev, pipe, sprite_width,
+ pixel_size);
+}
+
+bool ironlake_set_drps(struct drm_device *dev, u8 val)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ u16 rgvswctl;
+
+ rgvswctl = I915_READ16(MEMSWCTL);
+ if (rgvswctl & MEMCTL_CMD_STS) {
+ DRM_DEBUG("gpu busy, RCS change rejected\n");
+ return false; /* still busy with another command */
+ }
+
+ rgvswctl = (MEMCTL_CMD_CHFREQ << MEMCTL_CMD_SHIFT) |
+ (val << MEMCTL_FREQ_SHIFT) | MEMCTL_SFCAVM;
+ I915_WRITE16(MEMSWCTL, rgvswctl);
+ POSTING_READ16(MEMSWCTL);
+
+ rgvswctl |= MEMCTL_CMD_STS;
+ I915_WRITE16(MEMSWCTL, rgvswctl);
+
+ return true;
+}
+
+void ironlake_enable_drps(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ u32 rgvmodectl = I915_READ(MEMMODECTL);
+ u8 fmax, fmin, fstart, vstart;
+
+ /* Enable temp reporting */
+ I915_WRITE16(PMMISC, I915_READ(PMMISC) | MCPPCE_EN);
+ I915_WRITE16(TSC1, I915_READ(TSC1) | TSE);
+
+ /* 100ms RC evaluation intervals */
+ I915_WRITE(RCUPEI, 100000);
+ I915_WRITE(RCDNEI, 100000);
+
+ /* Set max/min thresholds to 90ms and 80ms respectively */
+ I915_WRITE(RCBMAXAVG, 90000);
+ I915_WRITE(RCBMINAVG, 80000);
+
+ I915_WRITE(MEMIHYST, 1);
+
+ /* Set up min, max, and cur for interrupt handling */
+ fmax = (rgvmodectl & MEMMODE_FMAX_MASK) >> MEMMODE_FMAX_SHIFT;
+ fmin = (rgvmodectl & MEMMODE_FMIN_MASK);
+ fstart = (rgvmodectl & MEMMODE_FSTART_MASK) >>
+ MEMMODE_FSTART_SHIFT;
+
+ vstart = (I915_READ(PXVFREQ_BASE + (fstart * 4)) & PXVFREQ_PX_MASK) >>
+ PXVFREQ_PX_SHIFT;
+
+ dev_priv->fmax = fmax; /* IPS callback will increase this */
+ dev_priv->fstart = fstart;
+
+ dev_priv->max_delay = fstart;
+ dev_priv->min_delay = fmin;
+ dev_priv->cur_delay = fstart;
+
+ DRM_DEBUG_DRIVER("fmax: %d, fmin: %d, fstart: %d\n",
+ fmax, fmin, fstart);
+
+ I915_WRITE(MEMINTREN, MEMINT_CX_SUPR_EN | MEMINT_EVAL_CHG_EN);
+
+ /*
+ * Interrupts will be enabled in ironlake_irq_postinstall
+ */
+
+ I915_WRITE(VIDSTART, vstart);
+ POSTING_READ(VIDSTART);
+
+ rgvmodectl |= MEMMODE_SWMODE_EN;
+ I915_WRITE(MEMMODECTL, rgvmodectl);
+
+ if (wait_for((I915_READ(MEMSWCTL) & MEMCTL_CMD_STS) == 0, 10))
+ DRM_ERROR("stuck trying to change perf mode\n");
+ msleep(1);
+
+ ironlake_set_drps(dev, fstart);
+
+ dev_priv->last_count1 = I915_READ(0x112e4) + I915_READ(0x112e8) +
+ I915_READ(0x112e0);
+ dev_priv->last_time1 = jiffies_to_msecs(jiffies);
+ dev_priv->last_count2 = I915_READ(0x112f4);
+ getrawmonotonic(&dev_priv->last_time2);
+}
+
+void ironlake_disable_drps(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ u16 rgvswctl = I915_READ16(MEMSWCTL);
+
+ /* Ack interrupts, disable EFC interrupt */
+ I915_WRITE(MEMINTREN, I915_READ(MEMINTREN) & ~MEMINT_EVAL_CHG_EN);
+ I915_WRITE(MEMINTRSTS, MEMINT_EVAL_CHG);
+ I915_WRITE(DEIER, I915_READ(DEIER) & ~DE_PCU_EVENT);
+ I915_WRITE(DEIIR, DE_PCU_EVENT);
+ I915_WRITE(DEIMR, I915_READ(DEIMR) | DE_PCU_EVENT);
+
+ /* Go back to the starting frequency */
+ ironlake_set_drps(dev, dev_priv->fstart);
+ msleep(1);
+ rgvswctl |= MEMCTL_CMD_STS;
+ I915_WRITE(MEMSWCTL, rgvswctl);
+ msleep(1);
+
+}
+
+void gen6_set_rps(struct drm_device *dev, u8 val)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ u32 swreq;
+
+ swreq = (val & 0x3ff) << 25;
+ I915_WRITE(GEN6_RPNSWREQ, swreq);
+}
+
+void gen6_disable_rps(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ I915_WRITE(GEN6_RPNSWREQ, 1 << 31);
+ I915_WRITE(GEN6_PMINTRMSK, 0xffffffff);
+ I915_WRITE(GEN6_PMIER, 0);
+ /* Complete PM interrupt masking here doesn't race with the rps work
+ * item again unmasking PM interrupts because that is using a different
+ * register (PMIMR) to mask PM interrupts. The only risk is in leaving
+ * stale bits in PMIIR and PMIMR which gen6_enable_rps will clean up. */
+
+ spin_lock_irq(&dev_priv->rps_lock);
+ dev_priv->pm_iir = 0;
+ spin_unlock_irq(&dev_priv->rps_lock);
+
+ I915_WRITE(GEN6_PMIIR, I915_READ(GEN6_PMIIR));
+}
+
+static unsigned long intel_pxfreq(u32 vidfreq)
+{
+ unsigned long freq;
+ int div = (vidfreq & 0x3f0000) >> 16;
+ int post = (vidfreq & 0x3000) >> 12;
+ int pre = (vidfreq & 0x7);
+
+ if (!pre)
+ return 0;
+
+ freq = ((div * 133333) / ((1<<post) * pre));
+
+ return freq;
+}
+
+void intel_init_emon(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ u32 lcfuse;
+ u8 pxw[16];
+ int i;
+
+ /* Disable to program */
+ I915_WRITE(ECR, 0);
+ POSTING_READ(ECR);
+
+ /* Program energy weights for various events */
+ I915_WRITE(SDEW, 0x15040d00);
+ I915_WRITE(CSIEW0, 0x007f0000);
+ I915_WRITE(CSIEW1, 0x1e220004);
+ I915_WRITE(CSIEW2, 0x04000004);
+
+ for (i = 0; i < 5; i++)
+ I915_WRITE(PEW + (i * 4), 0);
+ for (i = 0; i < 3; i++)
+ I915_WRITE(DEW + (i * 4), 0);
+
+ /* Program P-state weights to account for frequency power adjustment */
+ for (i = 0; i < 16; i++) {
+ u32 pxvidfreq = I915_READ(PXVFREQ_BASE + (i * 4));
+ unsigned long freq = intel_pxfreq(pxvidfreq);
+ unsigned long vid = (pxvidfreq & PXVFREQ_PX_MASK) >>
+ PXVFREQ_PX_SHIFT;
+ unsigned long val;
+
+ val = vid * vid;
+ val *= (freq / 1000);
+ val *= 255;
+ val /= (127*127*900);
+ if (val > 0xff)
+ DRM_ERROR("bad pxval: %ld\n", val);
+ pxw[i] = val;
+ }
+ /* Render standby states get 0 weight */
+ pxw[14] = 0;
+ pxw[15] = 0;
+
+ for (i = 0; i < 4; i++) {
+ u32 val = (pxw[i*4] << 24) | (pxw[(i*4)+1] << 16) |
+ (pxw[(i*4)+2] << 8) | (pxw[(i*4)+3]);
+ I915_WRITE(PXW + (i * 4), val);
+ }
+
+ /* Adjust magic regs to magic values (more experimental results) */
+ I915_WRITE(OGW0, 0);
+ I915_WRITE(OGW1, 0);
+ I915_WRITE(EG0, 0x00007f00);
+ I915_WRITE(EG1, 0x0000000e);
+ I915_WRITE(EG2, 0x000e0000);
+ I915_WRITE(EG3, 0x68000300);
+ I915_WRITE(EG4, 0x42000000);
+ I915_WRITE(EG5, 0x00140031);
+ I915_WRITE(EG6, 0);
+ I915_WRITE(EG7, 0);
+
+ for (i = 0; i < 8; i++)
+ I915_WRITE(PXWL + (i * 4), 0);
+
+ /* Enable PMON + select events */
+ I915_WRITE(ECR, 0x80000019);
+
+ lcfuse = I915_READ(LCFUSE02);
+
+ dev_priv->corr = (lcfuse & LCFUSE_HIV_MASK);
+}
+
+int intel_enable_rc6(const struct drm_device *dev)
+{
+ /*
+ * Respect the kernel parameter if it is set
+ */
+ if (i915_enable_rc6 >= 0)
+ return i915_enable_rc6;
+
+ /*
+ * Disable RC6 on Ironlake
+ */
+ if (INTEL_INFO(dev)->gen == 5)
+ return 0;
+
+ /*
+ * Disable rc6 on Sandybridge
+ */
+ if (INTEL_INFO(dev)->gen == 6) {
+ DRM_DEBUG_DRIVER("Sandybridge: deep RC6 disabled\n");
+ return INTEL_RC6_ENABLE;
+ }
+ DRM_DEBUG_DRIVER("RC6 and deep RC6 enabled\n");
+ return (INTEL_RC6_ENABLE | INTEL_RC6p_ENABLE);
+}
+
+void gen6_enable_rps(struct drm_i915_private *dev_priv)
+{
+ u32 rp_state_cap = I915_READ(GEN6_RP_STATE_CAP);
+ u32 gt_perf_status = I915_READ(GEN6_GT_PERF_STATUS);
+ u32 pcu_mbox, rc6_mask = 0;
+ u32 gtfifodbg;
+ int cur_freq, min_freq, max_freq;
+ int rc6_mode;
+ int i;
+
+ /* Here begins a magic sequence of register writes to enable
+ * auto-downclocking.
+ *
+ * Perhaps there might be some value in exposing these to
+ * userspace...
+ */
+ I915_WRITE(GEN6_RC_STATE, 0);
+ mutex_lock(&dev_priv->dev->struct_mutex);
+
+ /* Clear the DBG now so we don't confuse earlier errors */
+ if ((gtfifodbg = I915_READ(GTFIFODBG))) {
+ DRM_ERROR("GT fifo had a previous error %x\n", gtfifodbg);
+ I915_WRITE(GTFIFODBG, gtfifodbg);
+ }
+
+ gen6_gt_force_wake_get(dev_priv);
+
+ /* disable the counters and set deterministic thresholds */
+ I915_WRITE(GEN6_RC_CONTROL, 0);
+
+ I915_WRITE(GEN6_RC1_WAKE_RATE_LIMIT, 1000 << 16);
+ I915_WRITE(GEN6_RC6_WAKE_RATE_LIMIT, 40 << 16 | 30);
+ I915_WRITE(GEN6_RC6pp_WAKE_RATE_LIMIT, 30);
+ I915_WRITE(GEN6_RC_EVALUATION_INTERVAL, 125000);
+ I915_WRITE(GEN6_RC_IDLE_HYSTERSIS, 25);
+
+ for (i = 0; i < I915_NUM_RINGS; i++)
+ I915_WRITE(RING_MAX_IDLE(dev_priv->ring[i].mmio_base), 10);
+
+ I915_WRITE(GEN6_RC_SLEEP, 0);
+ I915_WRITE(GEN6_RC1e_THRESHOLD, 1000);
+ I915_WRITE(GEN6_RC6_THRESHOLD, 50000);
+ I915_WRITE(GEN6_RC6p_THRESHOLD, 100000);
+ I915_WRITE(GEN6_RC6pp_THRESHOLD, 64000); /* unused */
+
+ rc6_mode = intel_enable_rc6(dev_priv->dev);
+ if (rc6_mode & INTEL_RC6_ENABLE)
+ rc6_mask |= GEN6_RC_CTL_RC6_ENABLE;
+
+ if (rc6_mode & INTEL_RC6p_ENABLE)
+ rc6_mask |= GEN6_RC_CTL_RC6p_ENABLE;
+
+ if (rc6_mode & INTEL_RC6pp_ENABLE)
+ rc6_mask |= GEN6_RC_CTL_RC6pp_ENABLE;
+
+ DRM_INFO("Enabling RC6 states: RC6 %s, RC6p %s, RC6pp %s\n",
+ (rc6_mode & INTEL_RC6_ENABLE) ? "on" : "off",
+ (rc6_mode & INTEL_RC6p_ENABLE) ? "on" : "off",
+ (rc6_mode & INTEL_RC6pp_ENABLE) ? "on" : "off");
+
+ I915_WRITE(GEN6_RC_CONTROL,
+ rc6_mask |
+ GEN6_RC_CTL_EI_MODE(1) |
+ GEN6_RC_CTL_HW_ENABLE);
+
+ I915_WRITE(GEN6_RPNSWREQ,
+ GEN6_FREQUENCY(10) |
+ GEN6_OFFSET(0) |
+ GEN6_AGGRESSIVE_TURBO);
+ I915_WRITE(GEN6_RC_VIDEO_FREQ,
+ GEN6_FREQUENCY(12));
+
+ I915_WRITE(GEN6_RP_DOWN_TIMEOUT, 1000000);
+ I915_WRITE(GEN6_RP_INTERRUPT_LIMITS,
+ 18 << 24 |
+ 6 << 16);
+ I915_WRITE(GEN6_RP_UP_THRESHOLD, 10000);
+ I915_WRITE(GEN6_RP_DOWN_THRESHOLD, 1000000);
+ I915_WRITE(GEN6_RP_UP_EI, 100000);
+ I915_WRITE(GEN6_RP_DOWN_EI, 5000000);
+ I915_WRITE(GEN6_RP_IDLE_HYSTERSIS, 10);
+ I915_WRITE(GEN6_RP_CONTROL,
+ GEN6_RP_MEDIA_TURBO |
+ GEN6_RP_MEDIA_HW_MODE |
+ GEN6_RP_MEDIA_IS_GFX |
+ GEN6_RP_ENABLE |
+ GEN6_RP_UP_BUSY_AVG |
+ GEN6_RP_DOWN_IDLE_CONT);
+
+ if (wait_for((I915_READ(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) == 0,
+ 500))
+ DRM_ERROR("timeout waiting for pcode mailbox to become idle\n");
+
+ I915_WRITE(GEN6_PCODE_DATA, 0);
+ I915_WRITE(GEN6_PCODE_MAILBOX,
+ GEN6_PCODE_READY |
+ GEN6_PCODE_WRITE_MIN_FREQ_TABLE);
+ if (wait_for((I915_READ(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) == 0,
+ 500))
+ DRM_ERROR("timeout waiting for pcode mailbox to finish\n");
+
+ min_freq = (rp_state_cap & 0xff0000) >> 16;
+ max_freq = rp_state_cap & 0xff;
+ cur_freq = (gt_perf_status & 0xff00) >> 8;
+
+ /* Check for overclock support */
+ if (wait_for((I915_READ(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) == 0,
+ 500))
+ DRM_ERROR("timeout waiting for pcode mailbox to become idle\n");
+ I915_WRITE(GEN6_PCODE_MAILBOX, GEN6_READ_OC_PARAMS);
+ pcu_mbox = I915_READ(GEN6_PCODE_DATA);
+ if (wait_for((I915_READ(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) == 0,
+ 500))
+ DRM_ERROR("timeout waiting for pcode mailbox to finish\n");
+ if (pcu_mbox & (1<<31)) { /* OC supported */
+ max_freq = pcu_mbox & 0xff;
+ DRM_DEBUG_DRIVER("overclocking supported, adjusting frequency max to %dMHz\n", pcu_mbox * 50);
+ }
+
+ /* In units of 100MHz */
+ dev_priv->max_delay = max_freq;
+ dev_priv->min_delay = min_freq;
+ dev_priv->cur_delay = cur_freq;
+
+ /* requires MSI enabled */
+ I915_WRITE(GEN6_PMIER,
+ GEN6_PM_MBOX_EVENT |
+ GEN6_PM_THERMAL_EVENT |
+ GEN6_PM_RP_DOWN_TIMEOUT |
+ GEN6_PM_RP_UP_THRESHOLD |
+ GEN6_PM_RP_DOWN_THRESHOLD |
+ GEN6_PM_RP_UP_EI_EXPIRED |
+ GEN6_PM_RP_DOWN_EI_EXPIRED);
+ spin_lock_irq(&dev_priv->rps_lock);
+ WARN_ON(dev_priv->pm_iir != 0);
+ I915_WRITE(GEN6_PMIMR, 0);
+ spin_unlock_irq(&dev_priv->rps_lock);
+ /* enable all PM interrupts */
+ I915_WRITE(GEN6_PMINTRMSK, 0);
+
+ gen6_gt_force_wake_put(dev_priv);
+ mutex_unlock(&dev_priv->dev->struct_mutex);
+}
+
+void gen6_update_ring_freq(struct drm_i915_private *dev_priv)
+{
+ int min_freq = 15;
+ int gpu_freq, ia_freq, max_ia_freq;
+ int scaling_factor = 180;
+
+ max_ia_freq = cpufreq_quick_get_max(0);
+ /*
+ * Default to measured freq if none found, PCU will ensure we don't go
+ * over
+ */
+ if (!max_ia_freq)
+ max_ia_freq = tsc_khz;
+
+ /* Convert from kHz to MHz */
+ max_ia_freq /= 1000;
+
+ mutex_lock(&dev_priv->dev->struct_mutex);
+
+ /*
+ * For each potential GPU frequency, load a ring frequency we'd like
+ * to use for memory access. We do this by specifying the IA frequency
+ * the PCU should use as a reference to determine the ring frequency.
+ */
+ for (gpu_freq = dev_priv->max_delay; gpu_freq >= dev_priv->min_delay;
+ gpu_freq--) {
+ int diff = dev_priv->max_delay - gpu_freq;
+
+ /*
+ * For GPU frequencies less than 750MHz, just use the lowest
+ * ring freq.
+ */
+ if (gpu_freq < min_freq)
+ ia_freq = 800;
+ else
+ ia_freq = max_ia_freq - ((diff * scaling_factor) / 2);
+ ia_freq = DIV_ROUND_CLOSEST(ia_freq, 100);
+
+ I915_WRITE(GEN6_PCODE_DATA,
+ (ia_freq << GEN6_PCODE_FREQ_IA_RATIO_SHIFT) |
+ gpu_freq);
+ I915_WRITE(GEN6_PCODE_MAILBOX, GEN6_PCODE_READY |
+ GEN6_PCODE_WRITE_MIN_FREQ_TABLE);
+ if (wait_for((I915_READ(GEN6_PCODE_MAILBOX) &
+ GEN6_PCODE_READY) == 0, 10)) {
+ DRM_ERROR("pcode write of freq table timed out\n");
+ continue;
+ }
+ }
+
+ mutex_unlock(&dev_priv->dev->struct_mutex);
+}
+
+void ironlake_init_clock_gating(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ uint32_t dspclk_gate = VRHUNIT_CLOCK_GATE_DISABLE;
+
+ /* Required for FBC */
+ dspclk_gate |= DPFCUNIT_CLOCK_GATE_DISABLE |
+ DPFCRUNIT_CLOCK_GATE_DISABLE |
+ DPFDUNIT_CLOCK_GATE_DISABLE;
+ /* Required for CxSR */
+ dspclk_gate |= DPARBUNIT_CLOCK_GATE_DISABLE;
+
+ I915_WRITE(PCH_3DCGDIS0,
+ MARIUNIT_CLOCK_GATE_DISABLE |
+ SVSMUNIT_CLOCK_GATE_DISABLE);
+ I915_WRITE(PCH_3DCGDIS1,
+ VFMUNIT_CLOCK_GATE_DISABLE);
+
+ I915_WRITE(PCH_DSPCLK_GATE_D, dspclk_gate);
+
+ /*
+ * According to the spec the following bits should be set in
+ * order to enable memory self-refresh
+ * The bit 22/21 of 0x42004
+ * The bit 5 of 0x42020
+ * The bit 15 of 0x45000
+ */
+ I915_WRITE(ILK_DISPLAY_CHICKEN2,
+ (I915_READ(ILK_DISPLAY_CHICKEN2) |
+ ILK_DPARB_GATE | ILK_VSDPFD_FULL));
+ I915_WRITE(ILK_DSPCLK_GATE,
+ (I915_READ(ILK_DSPCLK_GATE) |
+ ILK_DPARB_CLK_GATE));
+ I915_WRITE(DISP_ARB_CTL,
+ (I915_READ(DISP_ARB_CTL) |
+ DISP_FBC_WM_DIS));
+ I915_WRITE(WM3_LP_ILK, 0);
+ I915_WRITE(WM2_LP_ILK, 0);
+ I915_WRITE(WM1_LP_ILK, 0);
+
+ /*
+ * Based on the document from hardware guys the following bits
+ * should be set unconditionally in order to enable FBC.
+ * The bit 22 of 0x42000
+ * The bit 22 of 0x42004
+ * The bit 7,8,9 of 0x42020.
+ */
+ if (IS_IRONLAKE_M(dev)) {
+ I915_WRITE(ILK_DISPLAY_CHICKEN1,
+ I915_READ(ILK_DISPLAY_CHICKEN1) |
+ ILK_FBCQ_DIS);
+ I915_WRITE(ILK_DISPLAY_CHICKEN2,
+ I915_READ(ILK_DISPLAY_CHICKEN2) |
+ ILK_DPARB_GATE);
+ I915_WRITE(ILK_DSPCLK_GATE,
+ I915_READ(ILK_DSPCLK_GATE) |
+ ILK_DPFC_DIS1 |
+ ILK_DPFC_DIS2 |
+ ILK_CLK_FBC);
+ }
+
+ I915_WRITE(ILK_DISPLAY_CHICKEN2,
+ I915_READ(ILK_DISPLAY_CHICKEN2) |
+ ILK_ELPIN_409_SELECT);
+ I915_WRITE(_3D_CHICKEN2,
+ _3D_CHICKEN2_WM_READ_PIPELINED << 16 |
+ _3D_CHICKEN2_WM_READ_PIPELINED);
+}
+
+void gen6_init_clock_gating(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ int pipe;
+ uint32_t dspclk_gate = VRHUNIT_CLOCK_GATE_DISABLE;
+
+ I915_WRITE(PCH_DSPCLK_GATE_D, dspclk_gate);
+
+ I915_WRITE(ILK_DISPLAY_CHICKEN2,
+ I915_READ(ILK_DISPLAY_CHICKEN2) |
+ ILK_ELPIN_409_SELECT);
+
+ I915_WRITE(WM3_LP_ILK, 0);
+ I915_WRITE(WM2_LP_ILK, 0);
+ I915_WRITE(WM1_LP_ILK, 0);
+
+ /* According to the BSpec vol1g, bit 12 (RCPBUNIT) clock
+ * gating disable must be set. Failure to set it results in
+ * flickering pixels due to Z write ordering failures after
+ * some amount of runtime in the Mesa "fire" demo, and Unigine
+ * Sanctuary and Tropics, and apparently anything else with
+ * alpha test or pixel discard.
+ *
+ * According to the spec, bit 11 (RCCUNIT) must also be set,
+ * but we didn't debug actual testcases to find it out.
+ */
+ I915_WRITE(GEN6_UCGCTL2,
+ GEN6_RCPBUNIT_CLOCK_GATE_DISABLE |
+ GEN6_RCCUNIT_CLOCK_GATE_DISABLE);
+
+ /*
+ * According to the spec the following bits should be
+ * set in order to enable memory self-refresh and fbc:
+ * The bit21 and bit22 of 0x42000
+ * The bit21 and bit22 of 0x42004
+ * The bit5 and bit7 of 0x42020
+ * The bit14 of 0x70180
+ * The bit14 of 0x71180
+ */
+ I915_WRITE(ILK_DISPLAY_CHICKEN1,
+ I915_READ(ILK_DISPLAY_CHICKEN1) |
+ ILK_FBCQ_DIS | ILK_PABSTRETCH_DIS);
+ I915_WRITE(ILK_DISPLAY_CHICKEN2,
+ I915_READ(ILK_DISPLAY_CHICKEN2) |
+ ILK_DPARB_GATE | ILK_VSDPFD_FULL);
+ I915_WRITE(ILK_DSPCLK_GATE,
+ I915_READ(ILK_DSPCLK_GATE) |
+ ILK_DPARB_CLK_GATE |
+ ILK_DPFD_CLK_GATE);
+
+ for_each_pipe(pipe) {
+ I915_WRITE(DSPCNTR(pipe),
+ I915_READ(DSPCNTR(pipe)) |
+ DISPPLANE_TRICKLE_FEED_DISABLE);
+ intel_flush_display_plane(dev_priv, pipe);
+ }
+}
+
+void ivybridge_init_clock_gating(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ int pipe;
+ uint32_t dspclk_gate = VRHUNIT_CLOCK_GATE_DISABLE;
+
+ I915_WRITE(PCH_DSPCLK_GATE_D, dspclk_gate);
+
+ I915_WRITE(WM3_LP_ILK, 0);
+ I915_WRITE(WM2_LP_ILK, 0);
+ I915_WRITE(WM1_LP_ILK, 0);
+
+ /* According to the spec, bit 13 (RCZUNIT) must be set on IVB.
+ * This implements the WaDisableRCZUnitClockGating workaround.
+ */
+ I915_WRITE(GEN6_UCGCTL2, GEN6_RCZUNIT_CLOCK_GATE_DISABLE);
+
+ I915_WRITE(ILK_DSPCLK_GATE, IVB_VRHUNIT_CLK_GATE);
+
+ I915_WRITE(IVB_CHICKEN3,
+ CHICKEN3_DGMG_REQ_OUT_FIX_DISABLE |
+ CHICKEN3_DGMG_DONE_FIX_DISABLE);
+
+ /* Apply the WaDisableRHWOOptimizationForRenderHang workaround. */
+ I915_WRITE(GEN7_COMMON_SLICE_CHICKEN1,
+ GEN7_CSC1_RHWO_OPT_DISABLE_IN_RCC);
+
+ /* WaApplyL3ControlAndL3ChickenMode requires those two on Ivy Bridge */
+ I915_WRITE(GEN7_L3CNTLREG1,
+ GEN7_WA_FOR_GEN7_L3_CONTROL);
+ I915_WRITE(GEN7_L3_CHICKEN_MODE_REGISTER,
+ GEN7_WA_L3_CHICKEN_MODE);
+
+ /* This is required by WaCatErrorRejectionIssue */
+ I915_WRITE(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG,
+ I915_READ(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG) |
+ GEN7_SQ_CHICKEN_MBCUNIT_SQINTMOB);
+
+ for_each_pipe(pipe) {
+ I915_WRITE(DSPCNTR(pipe),
+ I915_READ(DSPCNTR(pipe)) |
+ DISPPLANE_TRICKLE_FEED_DISABLE);
+ intel_flush_display_plane(dev_priv, pipe);
+ }
+}
+
+void valleyview_init_clock_gating(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ int pipe;
+ uint32_t dspclk_gate = VRHUNIT_CLOCK_GATE_DISABLE;
+
+ I915_WRITE(PCH_DSPCLK_GATE_D, dspclk_gate);
+
+ I915_WRITE(WM3_LP_ILK, 0);
+ I915_WRITE(WM2_LP_ILK, 0);
+ I915_WRITE(WM1_LP_ILK, 0);
+
+ /* According to the spec, bit 13 (RCZUNIT) must be set on IVB.
+ * This implements the WaDisableRCZUnitClockGating workaround.
+ */
+ I915_WRITE(GEN6_UCGCTL2, GEN6_RCZUNIT_CLOCK_GATE_DISABLE);
+
+ I915_WRITE(ILK_DSPCLK_GATE, IVB_VRHUNIT_CLK_GATE);
+
+ I915_WRITE(IVB_CHICKEN3,
+ CHICKEN3_DGMG_REQ_OUT_FIX_DISABLE |
+ CHICKEN3_DGMG_DONE_FIX_DISABLE);
+
+ /* Apply the WaDisableRHWOOptimizationForRenderHang workaround. */
+ I915_WRITE(GEN7_COMMON_SLICE_CHICKEN1,
+ GEN7_CSC1_RHWO_OPT_DISABLE_IN_RCC);
+
+ /* WaApplyL3ControlAndL3ChickenMode requires those two on Ivy Bridge */
+ I915_WRITE(GEN7_L3CNTLREG1, GEN7_WA_FOR_GEN7_L3_CONTROL);
+ I915_WRITE(GEN7_L3_CHICKEN_MODE_REGISTER, GEN7_WA_L3_CHICKEN_MODE);
+
+ /* This is required by WaCatErrorRejectionIssue */
+ I915_WRITE(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG,
+ I915_READ(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG) |
+ GEN7_SQ_CHICKEN_MBCUNIT_SQINTMOB);
+
+ for_each_pipe(pipe) {
+ I915_WRITE(DSPCNTR(pipe),
+ I915_READ(DSPCNTR(pipe)) |
+ DISPPLANE_TRICKLE_FEED_DISABLE);
+ intel_flush_display_plane(dev_priv, pipe);
+ }
+
+ I915_WRITE(CACHE_MODE_1, I915_READ(CACHE_MODE_1) |
+ (PIXEL_SUBSPAN_COLLECT_OPT_DISABLE << 16) |
+ PIXEL_SUBSPAN_COLLECT_OPT_DISABLE);
+}
+
+void g4x_init_clock_gating(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ uint32_t dspclk_gate;
+
+ I915_WRITE(RENCLK_GATE_D1, 0);
+ I915_WRITE(RENCLK_GATE_D2, VF_UNIT_CLOCK_GATE_DISABLE |
+ GS_UNIT_CLOCK_GATE_DISABLE |
+ CL_UNIT_CLOCK_GATE_DISABLE);
+ I915_WRITE(RAMCLK_GATE_D, 0);
+ dspclk_gate = VRHUNIT_CLOCK_GATE_DISABLE |
+ OVRUNIT_CLOCK_GATE_DISABLE |
+ OVCUNIT_CLOCK_GATE_DISABLE;
+ if (IS_GM45(dev))
+ dspclk_gate |= DSSUNIT_CLOCK_GATE_DISABLE;
+ I915_WRITE(DSPCLK_GATE_D, dspclk_gate);
+}
+
+void crestline_init_clock_gating(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ I915_WRITE(RENCLK_GATE_D1, I965_RCC_CLOCK_GATE_DISABLE);
+ I915_WRITE(RENCLK_GATE_D2, 0);
+ I915_WRITE(DSPCLK_GATE_D, 0);
+ I915_WRITE(RAMCLK_GATE_D, 0);
+ I915_WRITE16(DEUC, 0);
+}
+
+void broadwater_init_clock_gating(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ I915_WRITE(RENCLK_GATE_D1, I965_RCZ_CLOCK_GATE_DISABLE |
+ I965_RCC_CLOCK_GATE_DISABLE |
+ I965_RCPB_CLOCK_GATE_DISABLE |
+ I965_ISC_CLOCK_GATE_DISABLE |
+ I965_FBC_CLOCK_GATE_DISABLE);
+ I915_WRITE(RENCLK_GATE_D2, 0);
+}
+
+void gen3_init_clock_gating(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ u32 dstate = I915_READ(D_STATE);
+
+ dstate |= DSTATE_PLL_D3_OFF | DSTATE_GFX_CLOCK_GATING |
+ DSTATE_DOT_CLOCK_GATING;
+ I915_WRITE(D_STATE, dstate);
+}
+
+void i85x_init_clock_gating(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ I915_WRITE(RENCLK_GATE_D1, SV_CLOCK_GATE_DISABLE);
+}
+
+void i830_init_clock_gating(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ I915_WRITE(DSPCLK_GATE_D, OVRUNIT_CLOCK_GATE_DISABLE);
+}
+
+void ibx_init_clock_gating(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ /*
+ * On Ibex Peak and Cougar Point, we need to disable clock
+ * gating for the panel power sequencer or it will fail to
+ * start up when no ports are active.
+ */
+ I915_WRITE(SOUTH_DSPCLK_GATE_D, PCH_DPLSUNIT_CLOCK_GATE_DISABLE);
+}
+
+void cpt_init_clock_gating(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ int pipe;
+
+ /*
+ * On Ibex Peak and Cougar Point, we need to disable clock
+ * gating for the panel power sequencer or it will fail to
+ * start up when no ports are active.
+ */
+ I915_WRITE(SOUTH_DSPCLK_GATE_D, PCH_DPLSUNIT_CLOCK_GATE_DISABLE);
+ I915_WRITE(SOUTH_CHICKEN2, I915_READ(SOUTH_CHICKEN2) |
+ DPLS_EDP_PPS_FIX_DIS);
+ /* Without this, mode sets may fail silently on FDI */
+ for_each_pipe(pipe)
+ I915_WRITE(TRANS_CHICKEN2(pipe), TRANS_AUTOTRAIN_GEN_STALL_DIS);
+}
+
+static void ironlake_teardown_rc6(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ if (dev_priv->renderctx) {
+ i915_gem_object_unpin(dev_priv->renderctx);
+ drm_gem_object_unreference(&dev_priv->renderctx->base);
+ dev_priv->renderctx = NULL;
+ }
+
+ if (dev_priv->pwrctx) {
+ i915_gem_object_unpin(dev_priv->pwrctx);
+ drm_gem_object_unreference(&dev_priv->pwrctx->base);
+ dev_priv->pwrctx = NULL;
+ }
+}
+
+void ironlake_disable_rc6(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ if (I915_READ(PWRCTXA)) {
+ /* Wake the GPU, prevent RC6, then restore RSTDBYCTL */
+ I915_WRITE(RSTDBYCTL, I915_READ(RSTDBYCTL) | RCX_SW_EXIT);
+ wait_for(((I915_READ(RSTDBYCTL) & RSX_STATUS_MASK) == RSX_STATUS_ON),
+ 50);
+
+ I915_WRITE(PWRCTXA, 0);
+ POSTING_READ(PWRCTXA);
+
+ I915_WRITE(RSTDBYCTL, I915_READ(RSTDBYCTL) & ~RCX_SW_EXIT);
+ POSTING_READ(RSTDBYCTL);
+ }
+
+ ironlake_teardown_rc6(dev);
+}
+
+static struct drm_i915_gem_object *
+intel_alloc_context_page(struct drm_device *dev)
+{
+ struct drm_i915_gem_object *ctx;
+ int ret;
+
+ WARN_ON(!mutex_is_locked(&dev->struct_mutex));
+
+ ctx = i915_gem_alloc_object(dev, 4096);
+ if (!ctx) {
+ DRM_DEBUG("failed to alloc power context, RC6 disabled\n");
+ return NULL;
+ }
+
+ ret = i915_gem_object_pin(ctx, 4096, true);
+ if (ret) {
+ DRM_ERROR("failed to pin power context: %d\n", ret);
+ goto err_unref;
+ }
+
+ ret = i915_gem_object_set_to_gtt_domain(ctx, 1);
+ if (ret) {
+ DRM_ERROR("failed to set-domain on power context: %d\n", ret);
+ goto err_unpin;
+ }
+
+ return ctx;
+
+err_unpin:
+ i915_gem_object_unpin(ctx);
+err_unref:
+ drm_gem_object_unreference(&ctx->base);
+ mutex_unlock(&dev->struct_mutex);
+ return NULL;
+}
+
+static int ironlake_setup_rc6(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ if (dev_priv->renderctx == NULL)
+ dev_priv->renderctx = intel_alloc_context_page(dev);
+ if (!dev_priv->renderctx)
+ return -ENOMEM;
+
+ if (dev_priv->pwrctx == NULL)
+ dev_priv->pwrctx = intel_alloc_context_page(dev);
+ if (!dev_priv->pwrctx) {
+ ironlake_teardown_rc6(dev);
+ return -ENOMEM;
+ }
+
+ return 0;
+}
+
+void ironlake_enable_rc6(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ int ret;
+
+ /* rc6 disabled by default due to repeated reports of hanging during
+ * boot and resume.
+ */
+ if (!intel_enable_rc6(dev))
+ return;
+
+ mutex_lock(&dev->struct_mutex);
+ ret = ironlake_setup_rc6(dev);
+ if (ret) {
+ mutex_unlock(&dev->struct_mutex);
+ return;
+ }
+
+ /*
+ * GPU can automatically power down the render unit if given a page
+ * to save state.
+ */
+ ret = BEGIN_LP_RING(6);
+ if (ret) {
+ ironlake_teardown_rc6(dev);
+ mutex_unlock(&dev->struct_mutex);
+ return;
+ }
+
+ OUT_RING(MI_SUSPEND_FLUSH | MI_SUSPEND_FLUSH_EN);
+ OUT_RING(MI_SET_CONTEXT);
+ OUT_RING(dev_priv->renderctx->gtt_offset |
+ MI_MM_SPACE_GTT |
+ MI_SAVE_EXT_STATE_EN |
+ MI_RESTORE_EXT_STATE_EN |
+ MI_RESTORE_INHIBIT);
+ OUT_RING(MI_SUSPEND_FLUSH);
+ OUT_RING(MI_NOOP);
+ OUT_RING(MI_FLUSH);
+ ADVANCE_LP_RING();
+
+ /*
+ * Wait for the command parser to advance past MI_SET_CONTEXT. The HW
+ * does an implicit flush, combined with MI_FLUSH above, it should be
+ * safe to assume that renderctx is valid
+ */
+ ret = intel_wait_ring_idle(LP_RING(dev_priv));
+ if (ret) {
+ DRM_ERROR("failed to enable ironlake power power savings\n");
+ ironlake_teardown_rc6(dev);
+ mutex_unlock(&dev->struct_mutex);
+ return;
+ }
+
+ I915_WRITE(PWRCTXA, dev_priv->pwrctx->gtt_offset | PWRCTX_EN);
+ I915_WRITE(RSTDBYCTL, I915_READ(RSTDBYCTL) & ~RCX_SW_EXIT);
+ mutex_unlock(&dev->struct_mutex);
+}
+
+void intel_init_clock_gating(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ dev_priv->display.init_clock_gating(dev);
+
+ if (dev_priv->display.init_pch_clock_gating)
+ dev_priv->display.init_pch_clock_gating(dev);
+}
+
--
1.7.10
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