[PATCH 16/19] drm/i915: Make unpin async.
Maarten Lankhorst
maarten.lankhorst at linux.intel.com
Tue Apr 19 06:25:35 UTC 2016
All of intel_post_plane_update is handled there now, so move it over.
This is run after the hw state checker because it can't handle checking
crtc's separately yet.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
---
drivers/gpu/drm/i915/intel_atomic.c | 7 +
drivers/gpu/drm/i915/intel_display.c | 288 +++++++++++++++++++----------------
drivers/gpu/drm/i915/intel_drv.h | 4 +-
3 files changed, 170 insertions(+), 129 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_atomic.c b/drivers/gpu/drm/i915/intel_atomic.c
index 50ff90aea721..83c927eb8566 100644
--- a/drivers/gpu/drm/i915/intel_atomic.c
+++ b/drivers/gpu/drm/i915/intel_atomic.c
@@ -311,6 +311,13 @@ intel_atomic_state_alloc(struct drm_device *dev)
void intel_atomic_state_clear(struct drm_atomic_state *s)
{
struct intel_atomic_state *state = to_intel_atomic_state(s);
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(state->work); i++) {
+ kfree(state->work[i]);
+ state->work[i] = NULL;
+ }
+
drm_atomic_state_default_clear(&state->base);
state->dpll_set = state->modeset = false;
}
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 6feb8c6ccb8c..02993aed9780 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -4647,39 +4647,6 @@ intel_pre_disable_primary_noatomic(struct drm_crtc *crtc)
}
}
-static void intel_post_plane_update(struct intel_crtc_state *old_crtc_state)
-{
- struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->base.crtc);
- struct drm_atomic_state *old_state = old_crtc_state->base.state;
- struct intel_crtc_state *pipe_config =
- to_intel_crtc_state(crtc->base.state);
- struct drm_device *dev = crtc->base.dev;
- struct drm_plane *primary = crtc->base.primary;
- struct drm_plane_state *old_pri_state =
- drm_atomic_get_existing_plane_state(old_state, primary);
-
- intel_frontbuffer_flip(dev, pipe_config->fb_bits);
-
- crtc->wm.cxsr_allowed = true;
-
- if (pipe_config->update_wm_post && pipe_config->base.active)
- intel_update_watermarks(&crtc->base);
-
- if (old_pri_state) {
- struct intel_plane_state *primary_state =
- to_intel_plane_state(primary->state);
- struct intel_plane_state *old_primary_state =
- to_intel_plane_state(old_pri_state);
-
- intel_fbc_post_update(crtc);
-
- if (primary_state->visible &&
- (needs_modeset(&pipe_config->base) ||
- !old_primary_state->visible))
- intel_post_enable_primary(&crtc->base);
- }
-}
-
static void intel_pre_plane_update(struct intel_crtc_state *old_crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->base.crtc);
@@ -5289,18 +5256,21 @@ modeset_get_crtc_power_domains(struct drm_crtc *crtc,
struct drm_i915_private *dev_priv = crtc->dev->dev_private;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
enum intel_display_power_domain domain;
- unsigned long domains, new_domains, old_domains;
+ unsigned long domains, new_domains, old_domains, ms_domain = 0;
old_domains = intel_crtc->enabled_power_domains;
intel_crtc->enabled_power_domains = new_domains =
get_crtc_power_domains(crtc, crtc_state);
- domains = new_domains & ~old_domains;
+ if (needs_modeset(&crtc_state->base))
+ ms_domain = BIT(POWER_DOMAIN_MODESET);
+
+ domains = (new_domains & ~old_domains) | ms_domain;
for_each_power_domain(domain, domains)
intel_display_power_get(dev_priv, domain);
- return old_domains & ~new_domains;
+ return (old_domains & ~new_domains) | ms_domain;
}
static void modeset_put_power_domains(struct drm_i915_private *dev_priv,
@@ -6362,6 +6332,12 @@ int intel_display_suspend(struct drm_device *dev)
DRM_ERROR("Suspending crtc's failed with %i\n", ret);
else
dev_priv->modeset_restore_state = state;
+
+ /*
+ * Make sure all unpin_work completes before returning.
+ */
+ flush_workqueue(dev_priv->wq);
+
return ret;
}
@@ -10965,9 +10941,13 @@ static void intel_unpin_work_fn(struct work_struct *__work)
* that work->new_crtc_state contains valid memory during unpin
* because intel_atomic_commit may free it before this runs.
*/
- if (!work->can_async_unpin)
+ if (!work->can_async_unpin) {
intel_crtc_post_flip_update(work, crtc);
+ if (dev_priv->display.optimize_watermarks)
+ dev_priv->display.optimize_watermarks(work->new_crtc_state);
+ }
+
if (work->fb_bits & to_intel_plane(crtc->primary)->frontbuffer_bit)
intel_fbc_post_update(intel_crtc);
@@ -10997,6 +10977,10 @@ static void intel_unpin_work_fn(struct work_struct *__work)
spin_unlock_irq(&dev->event_lock);
}
+ /* New crtc_state freed? */
+ if (work->free_new_crtc_state)
+ intel_crtc_destroy_state(crtc, &work->new_crtc_state->base);
+
intel_crtc_destroy_state(crtc, &work->old_crtc_state->base);
for (i = 0; i < work->num_planes; i++) {
@@ -11086,6 +11070,11 @@ static void intel_mmio_flip_work_func(struct work_struct *w)
struct drm_i915_gem_request *req;
int i;
+ if (!needs_modeset(&crtc_state->base) && crtc_state->update_pipe) {
+ work->put_power_domains =
+ modeset_get_crtc_power_domains(crtc, crtc_state);
+ }
+
for (i = 0; i < work->num_planes; i++) {
struct intel_plane_state *old_plane_state = work->old_plane_state[i];
@@ -13038,11 +13027,33 @@ static int intel_atomic_check(struct drm_device *dev,
return 0;
}
+static bool needs_work(struct drm_crtc_state *crtc_state)
+{
+ /* hw state checker needs to run */
+ if (needs_modeset(crtc_state))
+ return true;
+
+ /* unpin old fb's, possibly vblank update */
+ if (crtc_state->planes_changed)
+ return true;
+
+ /* pipe parameters need to be updated, and hw state checker */
+ if (to_intel_crtc_state(crtc_state)->update_pipe)
+ return true;
+
+ /* vblank event requested? */
+ if (crtc_state->event)
+ return true;
+
+ return false;
+}
+
static int intel_atomic_prepare_commit(struct drm_device *dev,
struct drm_atomic_state *state,
bool async)
{
struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_atomic_state *intel_state = to_intel_atomic_state(state);
struct drm_plane_state *plane_state;
struct drm_crtc_state *crtc_state;
struct drm_plane *plane;
@@ -13055,12 +13066,24 @@ static int intel_atomic_prepare_commit(struct drm_device *dev,
}
for_each_crtc_in_state(state, crtc, crtc_state, i) {
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+
ret = intel_crtc_wait_for_pending_flips(crtc);
if (ret)
return ret;
- if (atomic_read(&to_intel_crtc(crtc)->unpin_work_count) >= 2)
+ if (atomic_read(&intel_crtc->unpin_work_count) >= 2)
flush_workqueue(dev_priv->wq);
+
+ /* test if we need to update something */
+ if (!needs_work(crtc_state))
+ continue;
+
+ intel_state->work[i] =
+ kzalloc(sizeof(**intel_state->work), GFP_KERNEL);
+
+ if (!intel_state->work[i])
+ return -ENOMEM;
}
ret = mutex_lock_interruptible(&dev->struct_mutex);
@@ -13113,69 +13136,96 @@ u32 intel_crtc_get_vblank_counter(struct intel_crtc *crtc)
return dev->driver->get_vblank_counter(dev, crtc->pipe);
}
-static void intel_atomic_wait_for_vblanks(struct drm_device *dev,
- struct drm_i915_private *dev_priv,
- unsigned crtc_mask)
+static void intel_prepare_work(struct drm_crtc *crtc,
+ struct intel_flip_work *work,
+ struct drm_atomic_state *state,
+ struct drm_crtc_state *old_crtc_state)
{
- unsigned last_vblank_count[I915_MAX_PIPES];
- enum pipe pipe;
- int ret;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ struct drm_plane_state *old_plane_state;
+ struct drm_plane *plane;
+ int i, j = 0;
- if (!crtc_mask)
- return;
+ INIT_WORK(&work->unpin_work, intel_unpin_work_fn);
+ INIT_WORK(&work->mmio_work, intel_mmio_flip_work_func);
+ atomic_inc(&intel_crtc->unpin_work_count);
- for_each_pipe(dev_priv, pipe) {
- struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
+ for_each_plane_in_state(state, plane, old_plane_state, i) {
+ struct intel_plane_state *old_state = to_intel_plane_state(old_plane_state);
+ struct intel_plane_state *new_state = to_intel_plane_state(plane->state);
- if (!((1 << pipe) & crtc_mask))
+ if (old_state->base.crtc != crtc &&
+ new_state->base.crtc != crtc)
continue;
- ret = drm_crtc_vblank_get(crtc);
- if (WARN_ON(ret != 0)) {
- crtc_mask &= ~(1 << pipe);
- continue;
+ if (plane->type == DRM_PLANE_TYPE_PRIMARY) {
+ plane->fb = new_state->base.fb;
+ crtc->x = new_state->base.src_x >> 16;
+ crtc->y = new_state->base.src_y >> 16;
}
- last_vblank_count[pipe] = drm_crtc_vblank_count(crtc);
+ old_state->wait_req = new_state->wait_req;
+ new_state->wait_req = NULL;
+
+ old_state->base.fence = new_state->base.fence;
+ new_state->base.fence = NULL;
+
+ /* remove plane state from the atomic state and move it to work */
+ old_plane_state->state = NULL;
+ state->planes[i] = NULL;
+ state->plane_states[i] = NULL;
+
+ work->old_plane_state[j] = old_state;
+ work->new_plane_state[j++] = new_state;
}
- for_each_pipe(dev_priv, pipe) {
- struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
- long lret;
+ old_crtc_state->state = NULL;
+ state->crtcs[drm_crtc_index(crtc)] = NULL;
+ state->crtc_states[drm_crtc_index(crtc)] = NULL;
- if (!((1 << pipe) & crtc_mask))
- continue;
+ work->old_crtc_state = to_intel_crtc_state(old_crtc_state);
+ work->new_crtc_state = to_intel_crtc_state(crtc->state);
+ work->num_planes = j;
- lret = wait_event_timeout(dev->vblank[pipe].queue,
- last_vblank_count[pipe] !=
- drm_crtc_vblank_count(crtc),
- msecs_to_jiffies(50));
+ work->event = crtc->state->event;
+ crtc->state->event = NULL;
- WARN_ON(!lret);
+ if (!work->new_crtc_state->update_wm_post &&
+ !needs_modeset(crtc->state) && !work->new_crtc_state->update_pipe)
+ work->can_async_unpin = true;
- drm_crtc_vblank_put(crtc);
- }
+ work->fb_bits = work->new_crtc_state->fb_bits;
}
-static bool needs_vblank_wait(struct intel_crtc_state *crtc_state)
+static void intel_schedule_unpin(struct drm_crtc *crtc,
+ struct intel_atomic_state *state,
+ struct intel_flip_work *work)
{
- /* fb updated, need to unpin old fb */
- if (crtc_state->fb_changed)
- return true;
+ struct drm_device *dev = crtc->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
- /* wm changes, need vblank before final wm's */
- if (crtc_state->update_wm_post)
- return true;
+ to_intel_crtc(crtc)->config = work->new_crtc_state;
- /*
- * cxsr is re-enabled after vblank.
- * This is already handled by crtc_state->update_wm_post,
- * but added for clarity.
- */
- if (crtc_state->disable_cxsr)
- return true;
+ queue_work(dev_priv->wq, &work->unpin_work);
+}
- return false;
+static void intel_schedule_update(struct drm_crtc *crtc,
+ struct intel_atomic_state *state,
+ struct intel_flip_work *work)
+{
+ struct drm_device *dev = crtc->dev;
+
+ if (work->can_async_unpin) {
+ INIT_LIST_HEAD(&work->head);
+ intel_schedule_unpin(crtc, state, work);
+ return;
+ }
+
+ spin_lock_irq(&dev->event_lock);
+ list_add_tail(&work->head, &to_intel_crtc(crtc)->flip_work);
+ spin_unlock_irq(&dev->event_lock);
+
+ intel_schedule_unpin(crtc, state, work);
}
/**
@@ -13202,11 +13252,7 @@ static int intel_atomic_commit(struct drm_device *dev,
struct drm_i915_private *dev_priv = dev->dev_private;
struct drm_crtc_state *old_crtc_state;
struct drm_crtc *crtc;
- struct intel_crtc_state *intel_cstate;
int ret = 0, i;
- bool hw_check = intel_state->modeset;
- unsigned long put_domains[I915_MAX_PIPES] = {};
- unsigned crtc_vblank_mask = 0;
ret = intel_atomic_prepare_commit(dev, state, async);
if (ret) {
@@ -13223,27 +13269,20 @@ static int intel_atomic_commit(struct drm_device *dev,
sizeof(intel_state->min_pixclk));
dev_priv->active_crtcs = intel_state->active_crtcs;
dev_priv->atomic_cdclk_freq = intel_state->cdclk;
-
- intel_display_power_get(dev_priv, POWER_DOMAIN_MODESET);
}
for_each_crtc_in_state(state, crtc, old_crtc_state, i) {
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
- if (needs_modeset(crtc->state) ||
- to_intel_crtc_state(crtc->state)->update_pipe) {
- hw_check = true;
-
- put_domains[to_intel_crtc(crtc)->pipe] =
- modeset_get_crtc_power_domains(crtc,
- to_intel_crtc_state(crtc->state));
- }
-
if (!needs_modeset(crtc->state))
continue;
intel_pre_plane_update(to_intel_crtc_state(old_crtc_state));
+ intel_state->work[i]->put_power_domains =
+ modeset_get_crtc_power_domains(crtc,
+ to_intel_crtc_state(crtc->state));
+
if (old_crtc_state->active) {
intel_crtc_disable_planes(crtc, old_crtc_state->plane_mask);
dev_priv->display.crtc_disable(crtc);
@@ -13300,46 +13339,37 @@ static int intel_atomic_commit(struct drm_device *dev,
if (crtc->state->active &&
(crtc->state->planes_changed || update_pipe))
drm_atomic_helper_commit_planes_on_crtc(old_crtc_state);
-
- if (pipe_config->base.active && needs_vblank_wait(pipe_config))
- crtc_vblank_mask |= 1 << i;
}
/* FIXME: add subpixel order */
- if (!state->legacy_cursor_update)
- intel_atomic_wait_for_vblanks(dev, dev_priv, crtc_vblank_mask);
-
- /*
- * Now that the vblank has passed, we can go ahead and program the
- * optimal watermarks on platforms that need two-step watermark
- * programming.
- *
- * TODO: Move this (and other cleanup) to an async worker eventually.
- */
- for_each_crtc_in_state(state, crtc, old_crtc_state, i) {
- intel_cstate = to_intel_crtc_state(crtc->state);
-
- if (dev_priv->display.optimize_watermarks)
- dev_priv->display.optimize_watermarks(intel_cstate);
- }
-
for_each_crtc_in_state(state, crtc, old_crtc_state, i) {
- intel_post_plane_update(to_intel_crtc_state(old_crtc_state));
-
- if (put_domains[i])
- modeset_put_power_domains(dev_priv, put_domains[i]);
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ struct intel_flip_work *work =
+ intel_state->work[i];
+
+ if (!work) {
+ if (!list_empty_careful(&intel_crtc->flip_work)) {
+ spin_lock_irq(&dev->event_lock);
+ if (!list_empty(&intel_crtc->flip_work))
+ work = list_last_entry(&intel_crtc->flip_work,
+ struct intel_flip_work, head);
+
+ if (work && work->new_crtc_state == to_intel_crtc_state(old_crtc_state)) {
+ work->free_new_crtc_state = true;
+ state->crtc_states[i] = NULL;
+ state->crtcs[i] = NULL;
+ }
+ spin_unlock_irq(&dev->event_lock);
+ }
+ continue;
+ }
- intel_modeset_verify_crtc(crtc, old_crtc_state, crtc->state);
+ intel_state->work[i] = NULL;
+ intel_prepare_work(crtc, work, state, old_crtc_state);
+ intel_schedule_update(crtc, intel_state, work);
}
- if (intel_state->modeset)
- intel_display_power_put(dev_priv, POWER_DOMAIN_MODESET);
-
- mutex_lock(&dev->struct_mutex);
- drm_atomic_helper_cleanup_planes(dev, state);
- mutex_unlock(&dev->struct_mutex);
-
drm_atomic_state_free(state);
/* As one of the primary mmio accessors, KMS has a high likelihood
@@ -13594,6 +13624,8 @@ static void intel_begin_crtc_commit(struct drm_crtc *crtc,
to_intel_crtc_state(old_crtc_state);
bool modeset = needs_modeset(crtc->state);
+ intel_frontbuffer_flip_prepare(dev, to_intel_crtc_state(crtc->state)->fb_bits);
+
/* Perform vblank evasion around commit operation */
intel_pipe_update_start(intel_crtc);
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index d2cfb50332be..9d8c6c165f8d 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -293,6 +293,8 @@ struct intel_atomic_state {
unsigned int active_crtcs;
unsigned int min_pixclk[I915_MAX_PIPES];
+ struct intel_flip_work *work[I915_MAX_PIPES];
+
struct intel_shared_dpll_config shared_dpll[I915_NUM_PLLS];
struct intel_wm_config wm_config;
@@ -949,7 +951,7 @@ struct intel_flip_work {
unsigned put_power_domains;
unsigned num_planes;
- bool can_async_unpin;
+ bool can_async_unpin, free_new_crtc_state;
unsigned fb_bits;
struct intel_crtc_state *old_crtc_state, *new_crtc_state;
--
2.1.0
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