[Intel-gfx] [PATCH 25/43] drm/i915: Wrap the preallocated BIOS framebuffer and preserve for KMS fbcon
Chris Wilson
chris at chris-wilson.co.uk
Fri May 25 14:33:04 CEST 2012
Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
---
drivers/gpu/drm/i915/i915_dma.c | 4 ++
drivers/gpu/drm/i915/intel_display.c | 3 -
drivers/gpu/drm/i915/intel_drv.h | 1 +
drivers/gpu/drm/i915/intel_fb.c | 118 ++++++++++++++++++++++++++++++++--
4 files changed, 119 insertions(+), 7 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
index f947926..51c8200 100644
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -1312,6 +1312,9 @@ static int i915_load_modeset_init(struct drm_device *dev)
intel_modeset_init(dev);
+ /* Wrap existing BIOS mode configuration prior to GEM takeover */
+ intel_fbdev_init_bios(dev);
+
ret = i915_gem_init(dev);
if (ret)
goto cleanup_gem_stolen;
@@ -1326,6 +1329,7 @@ static int i915_load_modeset_init(struct drm_device *dev)
/* FIXME: do pre/post-mode set stuff in core KMS code */
dev->vblank_disable_allowed = 1;
+ /* Install a default KMS/GEM fbcon if we failed to wrap the BIOS fb */
ret = intel_fbdev_init(dev);
if (ret)
goto cleanup_irq;
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 1a0ded5..97f294e 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -6506,9 +6506,6 @@ static void intel_setup_outputs(struct drm_device *dev)
intel_encoder_clones(dev, encoder->clone_mask);
}
- /* 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);
}
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 094f31e..762d580 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -436,6 +436,7 @@ extern int intel_framebuffer_init(struct drm_device *dev,
struct intel_framebuffer *ifb,
struct drm_mode_fb_cmd2 *mode_cmd,
struct drm_i915_gem_object *obj);
+extern void intel_fbdev_init_bios(struct drm_device *dev);
extern int intel_fbdev_init(struct drm_device *dev);
extern void intel_fbdev_fini(struct drm_device *dev);
extern void intel_fbdev_set_suspend(struct drm_device *dev, int state);
diff --git a/drivers/gpu/drm/i915/intel_fb.c b/drivers/gpu/drm/i915/intel_fb.c
index 7835297..9be61b5 100644
--- a/drivers/gpu/drm/i915/intel_fb.c
+++ b/drivers/gpu/drm/i915/intel_fb.c
@@ -233,19 +233,127 @@ static void intel_fbdev_destroy(struct drm_device *dev,
}
}
-int intel_fbdev_init(struct drm_device *dev)
+void intel_fbdev_init_bios(struct drm_device *dev)
{
+ struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_fbdev *ifbdev;
+ int pipe, ret;
+
+ for_each_pipe(pipe) {
+ struct intel_crtc *crtc = to_intel_crtc(dev_priv->pipe_to_crtc_mapping[pipe]);
+ struct drm_mode_fb_cmd2 mode_cmd;
+ struct drm_i915_gem_object *obj;
+ struct fb_info *info;
+ u32 val, bpp, depth;
+ u32 size, offset;
+
+ val = I915_READ(DSPCNTR(crtc->plane));
+ if ((val & DISPLAY_PLANE_ENABLE) == 0)
+ continue;
+
+ if (INTEL_INFO(dev)->gen >= 4) {
+ if (val & DISPPLANE_TILED)
+ continue; /* unexpected! */
+ }
+
+ switch (val & DISPPLANE_PIXFORMAT_MASK) {
+ default:
+ case DISPPLANE_8BPP:
+ continue; /* ignore palettes */
+ case DISPPLANE_15_16BPP:
+ depth = 15; bpp = 16;
+ break;
+ case DISPPLANE_16BPP:
+ depth = bpp = 16;
+ break;
+ case DISPPLANE_32BPP_NO_ALPHA:
+ depth = 24; bpp = 32;
+ break;
+ }
+
+ if (INTEL_INFO(dev)->gen >= 4)
+ offset = I915_READ(DSPSURF(crtc->plane));
+ else
+ offset = I915_READ(DSPADDR(crtc->plane));
+ mode_cmd.pitches[0] = I915_READ(DSPSTRIDE(crtc->plane));
+
+ val = I915_READ(PIPESRC(crtc->pipe));
+ mode_cmd.width = ((val >> 16) & 0xfff) + 1;
+ mode_cmd.height = ((val >> 0) & 0xfff) + 1;
+ mode_cmd.pixel_format = drm_mode_legacy_fb_format(bpp, depth);
+
+ DRM_DEBUG_KMS("Found active pipe [%d/%d]: size=%dx%d@%d, offset=%x\n",
+ crtc->pipe, crtc->plane,
+ mode_cmd.width, mode_cmd.height, depth, offset);
+
+ size = mode_cmd.pitches[0] * mode_cmd.height;
+ size = ALIGN(size, PAGE_SIZE);
+
+ ifbdev = kzalloc(sizeof(struct intel_fbdev), GFP_KERNEL);
+ if (!ifbdev)
+ continue;
+
+ ifbdev->helper.funcs = &intel_fb_helper_funcs;
+ ret = drm_fb_helper_init(dev, &ifbdev->helper,
+ dev_priv->num_pipe,
+ INTELFB_CONN_LIMIT);
+ if (ret) {
+ kfree(ifbdev);
+ continue;
+ }
+
+ /* assume a 1:1 linear mapping between stolen and GTT */
+ obj = i915_gem_object_create_stolen_for_preallocated
+ (dev, offset, offset, size);
+ if (obj == NULL) {
+ kfree(ifbdev);
+ continue;
+ }
+
+ ret = intel_framebuffer_init(dev, &ifbdev->ifb, &mode_cmd, obj);
+ if (ret) {
+ drm_gem_object_unreference(&obj->base);
+ kfree(ifbdev);
+ continue;
+ }
+
+ info = intelfb_create_info(ifbdev);
+ if (info == NULL) {
+ drm_gem_object_unreference(&obj->base);
+ kfree(ifbdev);
+ continue;
+ }
+
+ crtc->base.fb = &ifbdev->ifb.base;
+ obj->pin_count++;
+
+ drm_fb_helper_single_add_all_connectors(&ifbdev->helper);
+ drm_fb_helper_hotplug_event(&ifbdev->helper);
+
+ vga_switcheroo_client_fb_set(dev->pdev, info);
+ dev_priv->fbdev = ifbdev;
+ return;
+ }
+
+ /* otherwise disable all the possible crtcs before KMS */
+ DRM_DEBUG_KMS("No active planes found\n");
+ drm_helper_disable_unused_functions(dev);
+}
+
+int intel_fbdev_init(struct drm_device *dev)
+{
drm_i915_private_t *dev_priv = dev->dev_private;
+ struct intel_fbdev *ifbdev;
int ret;
+ if (dev_priv->fbdev)
+ return 0;
+
ifbdev = kzalloc(sizeof(struct intel_fbdev), GFP_KERNEL);
- if (!ifbdev)
+ if (ifbdev == NULL)
return -ENOMEM;
- dev_priv->fbdev = ifbdev;
ifbdev->helper.funcs = &intel_fb_helper_funcs;
-
ret = drm_fb_helper_init(dev, &ifbdev->helper,
dev_priv->num_pipe,
INTELFB_CONN_LIMIT);
@@ -254,6 +362,8 @@ int intel_fbdev_init(struct drm_device *dev)
return ret;
}
+ dev_priv->fbdev = ifbdev;
+
drm_fb_helper_single_add_all_connectors(&ifbdev->helper);
drm_fb_helper_initial_config(&ifbdev->helper, 32);
return 0;
--
1.7.10
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