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Commit 8dd634d9 authored by Maarten Lankhorst's avatar Maarten Lankhorst
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drm/i915: Remove cs based page flip support. 

With mmio flips now available on all platforms it's time to remove
support for cs flips.
Signed-off-by: default avatarMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1463490484-19540-13-git-send-email-maarten.lankhorst@linux.intel.comReviewed-by: default avatarPatrik Jakobsson <patrik.jakobsson@linux.intel.com>
parent 143f73b3
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Showing with 33 additions and 507 deletions
drivers/gpu/drm/i915/i915_debugfs.c
View file @ 8dd634d9
......@@ -599,7 +599,6 @@ static void i915_dump_pageflip(struct seq_file *m,
{
const char pipe = pipe_name(crtc->pipe);
u32 pending;
u32 addr;
int i;
pending = atomic_read(&work->pending);
......@@ -611,7 +610,6 @@ static void i915_dump_pageflip(struct seq_file *m,
pipe, plane_name(crtc->plane));
}
for (i = 0; i < work->num_planes; i++) {
struct intel_plane_state *old_plane_state = work->old_plane_state[i];
struct drm_plane *plane = old_plane_state->base.plane;
......@@ -635,22 +633,9 @@ static void i915_dump_pageflip(struct seq_file *m,
i915_gem_request_completed(req, true));
}
seq_printf(m, "Flip queued on frame %d, (was ready on frame %d), now %d\n",
work->flip_queued_vblank,
work->flip_ready_vblank,
seq_printf(m, "Flip queued on frame %d, now %d\n",
pending ? work->flip_queued_vblank : -1,
intel_crtc_get_vblank_counter(crtc));
seq_printf(m, "%d prepares\n", atomic_read(&work->pending));
if (INTEL_INFO(dev_priv)->gen >= 4)
addr = I915_HI_DISPBASE(I915_READ(DSPSURF(crtc->plane)));
else
addr = I915_READ(DSPADDR(crtc->plane));
seq_printf(m, "Current scanout address 0x%08x\n", addr);
if (work->flip_queued_req) {
seq_printf(m, "New framebuffer address 0x%08lx\n", (long)work->gtt_offset);
seq_printf(m, "MMIO update completed? %d\n", addr == work->gtt_offset);
}
}
static int i915_gem_pageflip_info(struct seq_file *m, void *data)
......
drivers/gpu/drm/i915/i915_irq.c
View file @ 8dd634d9
......@@ -136,6 +136,12 @@ static const u32 hpd_bxt[HPD_NUM_PINS] = {
POSTING_READ(type##IIR); \
} while (0)
static void
intel_finish_page_flip_cs(struct drm_i915_private *dev_priv, unsigned pipe)
{
DRM_DEBUG_KMS("Finished page flip\n");
}
/*
* We should clear IMR at preinstall/uninstall, and just check at postinstall.
*/
......@@ -1631,16 +1637,11 @@ static void gen6_rps_irq_handler(struct drm_i915_private *dev_priv, u32 pm_iir)
}
}
static bool intel_pipe_handle_vblank(struct drm_i915_private *dev_priv,
static void intel_pipe_handle_vblank(struct drm_i915_private *dev_priv,
enum pipe pipe)
{
bool ret;
ret = drm_handle_vblank(dev_priv->dev, pipe);
if (ret)
if (drm_handle_vblank(dev_priv->dev, pipe))
intel_finish_page_flip_mmio(dev_priv, pipe);
return ret;
}
static void valleyview_pipestat_irq_ack(struct drm_i915_private *dev_priv,
......@@ -1707,9 +1708,8 @@ static void valleyview_pipestat_irq_handler(struct drm_i915_private *dev_priv,
enum pipe pipe;
for_each_pipe(dev_priv, pipe) {
if (pipe_stats[pipe] & PIPE_START_VBLANK_INTERRUPT_STATUS &&
intel_pipe_handle_vblank(dev_priv, pipe))
intel_check_page_flip(dev_priv, pipe);
if (pipe_stats[pipe] & PIPE_START_VBLANK_INTERRUPT_STATUS)
intel_pipe_handle_vblank(dev_priv, pipe);
if (pipe_stats[pipe] & PLANE_FLIP_DONE_INT_STATUS_VLV)
intel_finish_page_flip_cs(dev_priv, pipe);
......@@ -2155,9 +2155,8 @@ static void ilk_display_irq_handler(struct drm_i915_private *dev_priv,
DRM_ERROR("Poison interrupt\n");
for_each_pipe(dev_priv, pipe) {
if (de_iir & DE_PIPE_VBLANK(pipe) &&
intel_pipe_handle_vblank(dev_priv, pipe))
intel_check_page_flip(dev_priv, pipe);
if (de_iir & DE_PIPE_VBLANK(pipe))
intel_pipe_handle_vblank(dev_priv, pipe);
if (de_iir & DE_PIPE_FIFO_UNDERRUN(pipe))
intel_cpu_fifo_underrun_irq_handler(dev_priv, pipe);
......@@ -2206,9 +2205,8 @@ static void ivb_display_irq_handler(struct drm_i915_private *dev_priv,
intel_opregion_asle_intr(dev_priv);
for_each_pipe(dev_priv, pipe) {
if (de_iir & (DE_PIPE_VBLANK_IVB(pipe)) &&
intel_pipe_handle_vblank(dev_priv, pipe))
intel_check_page_flip(dev_priv, pipe);
if (de_iir & (DE_PIPE_VBLANK_IVB(pipe)))
intel_pipe_handle_vblank(dev_priv, pipe);
/* plane/pipes map 1:1 on ilk+ */
if (de_iir & DE_PLANE_FLIP_DONE_IVB(pipe))
......@@ -2407,9 +2405,8 @@ gen8_de_irq_handler(struct drm_i915_private *dev_priv, u32 master_ctl)
ret = IRQ_HANDLED;
I915_WRITE(GEN8_DE_PIPE_IIR(pipe), iir);
if (iir & GEN8_PIPE_VBLANK &&
intel_pipe_handle_vblank(dev_priv, pipe))
intel_check_page_flip(dev_priv, pipe);
if (iir & GEN8_PIPE_VBLANK)
intel_pipe_handle_vblank(dev_priv, pipe);
flip_done = iir;
if (INTEL_INFO(dev_priv)->gen >= 9)
......@@ -3973,37 +3970,6 @@ static int i8xx_irq_postinstall(struct drm_device *dev)
return 0;
}
/*
* Returns true when a page flip has completed.
*/
static bool i8xx_handle_vblank(struct drm_i915_private *dev_priv,
int plane, int pipe, u32 iir)
{
u16 flip_pending = DISPLAY_PLANE_FLIP_PENDING(plane);
if (!intel_pipe_handle_vblank(dev_priv, pipe))
return false;
if ((iir & flip_pending) == 0)
goto check_page_flip;
/* We detect FlipDone by looking for the change in PendingFlip from '1'
* to '0' on the following vblank, i.e. IIR has the Pendingflip
* asserted following the MI_DISPLAY_FLIP, but ISR is deasserted, hence
* the flip is completed (no longer pending). Since this doesn't raise
* an interrupt per se, we watch for the change at vblank.
*/
if (I915_READ16(ISR) & flip_pending)
goto check_page_flip;
intel_finish_page_flip_cs(dev_priv, pipe);
return true;
check_page_flip:
intel_check_page_flip(dev_priv, pipe);
return false;
}
static irqreturn_t i8xx_irq_handler(int irq, void *arg)
{
struct drm_device *dev = arg;
......@@ -4056,13 +4022,8 @@ static irqreturn_t i8xx_irq_handler(int irq, void *arg)
notify_ring(&dev_priv->engine[RCS]);
for_each_pipe(dev_priv, pipe) {
int plane = pipe;
if (HAS_FBC(dev_priv))
plane = !plane;
if (pipe_stats[pipe] & PIPE_VBLANK_INTERRUPT_STATUS &&
i8xx_handle_vblank(dev_priv, plane, pipe, iir))
flip_mask &= ~DISPLAY_PLANE_FLIP_PENDING(plane);
if (pipe_stats[pipe] & PIPE_VBLANK_INTERRUPT_STATUS)
intel_pipe_handle_vblank(dev_priv, pipe);
if (pipe_stats[pipe] & PIPE_CRC_DONE_INTERRUPT_STATUS)
i9xx_pipe_crc_irq_handler(dev_priv, pipe);
......@@ -4162,37 +4123,6 @@ static int i915_irq_postinstall(struct drm_device *dev)
return 0;
}
/*
* Returns true when a page flip has completed.
*/
static bool i915_handle_vblank(struct drm_i915_private *dev_priv,
int plane, int pipe, u32 iir)
{
u32 flip_pending = DISPLAY_PLANE_FLIP_PENDING(plane);
if (!intel_pipe_handle_vblank(dev_priv, pipe))
return false;
if ((iir & flip_pending) == 0)
goto check_page_flip;
/* We detect FlipDone by looking for the change in PendingFlip from '1'
* to '0' on the following vblank, i.e. IIR has the Pendingflip
* asserted following the MI_DISPLAY_FLIP, but ISR is deasserted, hence
* the flip is completed (no longer pending). Since this doesn't raise
* an interrupt per se, we watch for the change at vblank.
*/
if (I915_READ(ISR) & flip_pending)
goto check_page_flip;
intel_finish_page_flip_cs(dev_priv, pipe);
return true;
check_page_flip:
intel_check_page_flip(dev_priv, pipe);
return false;
}
static irqreturn_t i915_irq_handler(int irq, void *arg)
{
struct drm_device *dev = arg;
......@@ -4253,13 +4183,8 @@ static irqreturn_t i915_irq_handler(int irq, void *arg)
notify_ring(&dev_priv->engine[RCS]);
for_each_pipe(dev_priv, pipe) {
int plane = pipe;
if (HAS_FBC(dev_priv))
plane = !plane;
if (pipe_stats[pipe] & PIPE_VBLANK_INTERRUPT_STATUS &&
i915_handle_vblank(dev_priv, plane, pipe, iir))
flip_mask &= ~DISPLAY_PLANE_FLIP_PENDING(plane);
if (pipe_stats[pipe] & PIPE_VBLANK_INTERRUPT_STATUS)
intel_pipe_handle_vblank(dev_priv, pipe);
if (pipe_stats[pipe] & PIPE_LEGACY_BLC_EVENT_STATUS)
blc_event = true;
......@@ -4487,9 +4412,8 @@ static irqreturn_t i965_irq_handler(int irq, void *arg)
notify_ring(&dev_priv->engine[VCS]);
for_each_pipe(dev_priv, pipe) {
if (pipe_stats[pipe] & PIPE_START_VBLANK_INTERRUPT_STATUS &&
i915_handle_vblank(dev_priv, pipe, pipe, iir))
flip_mask &= ~DISPLAY_PLANE_FLIP_PENDING(pipe);
if (pipe_stats[pipe] & PIPE_START_VBLANK_INTERRUPT_STATUS)
intel_pipe_handle_vblank(dev_priv, pipe);
if (pipe_stats[pipe] & PIPE_LEGACY_BLC_EVENT_STATUS)
blc_event = true;
......
drivers/gpu/drm/i915/intel_display.c
View file @ 8dd634d9
......@@ -48,11 +48,6 @@
#include <linux/reservation.h>
#include <linux/dma-buf.h>
static bool is_mmio_work(struct intel_flip_work *work)
{
return !work->flip_queued_req;
}
/* Primary plane formats for gen <= 3 */
static const uint32_t i8xx_primary_formats[] = {
DRM_FORMAT_C8,
......@@ -3102,14 +3097,6 @@ intel_pipe_set_base_atomic(struct drm_crtc *crtc, struct drm_framebuffer *fb,
return -ENODEV;
}
static void intel_complete_page_flips(struct drm_i915_private *dev_priv)
{
struct intel_crtc *crtc;
for_each_intel_crtc(dev_priv->dev, crtc)
intel_finish_page_flip_cs(dev_priv, crtc->pipe);
}
static void intel_update_primary_planes(struct drm_device *dev)
{
struct drm_crtc *crtc;
......@@ -3150,13 +3137,6 @@ void intel_prepare_reset(struct drm_i915_private *dev_priv)
void intel_finish_reset(struct drm_i915_private *dev_priv)
{
/*
* Flips in the rings will be nuked by the reset,
* so complete all pending flips so that user space
* will get its events and not get stuck.
*/
intel_complete_page_flips(dev_priv);
/* no reset support for gen2 */
if (IS_GEN2(dev_priv))
return;
......@@ -3834,26 +3814,7 @@ static int intel_crtc_wait_for_pending_flips(struct drm_crtc *crtc)
if (ret < 0)
return ret;
if (ret == 0) {
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
struct intel_flip_work *work;
spin_lock_irq(&dev->event_lock);
/*
* If we're waiting for page flips, it's the first
* flip on the list that's stuck.
*/
work = list_first_entry_or_null(&intel_crtc->flip_work,
struct intel_flip_work, head);
if (work && !is_mmio_work(work) &&
!work_busy(&work->unpin_work)) {
WARN_ONCE(1, "Removing stuck page flip\n");
page_flip_completed(intel_crtc, work);
}
spin_unlock_irq(&dev->event_lock);
}
WARN(ret == 0, "Stuck page flip\n");
return 0;
}
......@@ -10925,9 +10886,6 @@ static void intel_unpin_work_fn(struct work_struct *__work)
intel_crtc_destroy_state(crtc, &work->old_crtc_state->base);
if (work->flip_queued_req)
i915_gem_request_unreference(work->flip_queued_req);
for (i = 0; i < work->num_planes; i++) {
struct intel_plane_state *old_plane_state =
work->old_plane_state[i];
......@@ -10959,75 +10917,6 @@ static void intel_unpin_work_fn(struct work_struct *__work)
kfree(work);
}
/* Is 'a' after or equal to 'b'? */
static bool g4x_flip_count_after_eq(u32 a, u32 b)
{
return !((a - b) & 0x80000000);
}
static bool __pageflip_finished_cs(struct intel_crtc *crtc,
struct intel_flip_work *work)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
unsigned reset_counter;
reset_counter = i915_reset_counter(&dev_priv->gpu_error);
if (crtc->reset_counter != reset_counter)
return true;
/*
* The relevant registers doen't exist on pre-ctg.
* As the flip done interrupt doesn't trigger for mmio
* flips on gmch platforms, a flip count check isn't
* really needed there. But since ctg has the registers,
* include it in the check anyway.
*/
if (INTEL_INFO(dev)->gen < 5 && !IS_G4X(dev))
return true;
/*
* BDW signals flip done immediately if the plane
* is disabled, even if the plane enable is already
* armed to occur at the next vblank :(
*/
/*
* A DSPSURFLIVE check isn't enough in case the mmio and CS flips
* used the same base address. In that case the mmio flip might
* have completed, but the CS hasn't even executed the flip yet.
*
* A flip count check isn't enough as the CS might have updated
* the base address just after start of vblank, but before we
* managed to process the interrupt. This means we'd complete the
* CS flip too soon.
*
* Combining both checks should get us a good enough result. It may
* still happen that the CS flip has been executed, but has not
* yet actually completed. But in case the base address is the same
* anyway, we don't really care.
*/
return (I915_READ(DSPSURFLIVE(crtc->plane)) & ~0xfff) ==
work->gtt_offset &&
g4x_flip_count_after_eq(I915_READ(PIPE_FLIPCOUNT_G4X(crtc->pipe)),
work->flip_count);
}
static bool
__pageflip_finished_mmio(struct intel_crtc *crtc,
struct intel_flip_work *work)
{
/*
* MMIO work completes when vblank is different from
* flip_queued_vblank.
*
* Reset counter value doesn't matter, this is handled by
* i915_wait_request finishing early, so no need to handle
* reset here.
*/
return intel_crtc_get_vblank_counter(crtc) != work->flip_queued_vblank;
}
static bool pageflip_finished(struct intel_crtc *crtc,
struct intel_flip_work *work)
......@@ -11037,44 +10926,11 @@ static bool pageflip_finished(struct intel_crtc *crtc,
smp_rmb();
if (is_mmio_work(work))
return __pageflip_finished_mmio(crtc, work);
else
return __pageflip_finished_cs(crtc, work);
}
void intel_finish_page_flip_cs(struct drm_i915_private *dev_priv, int pipe)
{
struct drm_device *dev = dev_priv->dev;
struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
struct intel_flip_work *work;
unsigned long flags;
/* Ignore early vblank irqs */
if (!crtc)
return;
/*
* This is called both by irq handlers and the reset code (to complete
* lost pageflips) so needs the full irqsave spinlocks.
* MMIO work completes when vblank is different from
* flip_queued_vblank.
*/
spin_lock_irqsave(&dev->event_lock, flags);
while (!list_empty(&intel_crtc->flip_work)) {
work = list_first_entry(&intel_crtc->flip_work,
struct intel_flip_work,
head);
if (is_mmio_work(work))
break;
if (!pageflip_finished(intel_crtc, work) ||
work_busy(&work->unpin_work))
break;
page_flip_completed(intel_crtc, work);
}
spin_unlock_irqrestore(&dev->event_lock, flags);
return intel_crtc_get_vblank_counter(crtc) != work->flip_queued_vblank;
}
void intel_finish_page_flip_mmio(struct drm_i915_private *dev_priv, int pipe)
......@@ -11099,9 +10955,6 @@ void intel_finish_page_flip_mmio(struct drm_i915_private *dev_priv, int pipe)
struct intel_flip_work,
head);
if (!is_mmio_work(work))
break;
if (!pageflip_finished(intel_crtc, work) ||
work_busy(&work->unpin_work))
break;
......@@ -11111,16 +10964,6 @@ void intel_finish_page_flip_mmio(struct drm_i915_private *dev_priv, int pipe)
spin_unlock_irqrestore(&dev->event_lock, flags);
}
static inline void intel_mark_page_flip_active(struct intel_crtc *crtc,
struct intel_flip_work *work)
{
work->flip_queued_vblank = intel_crtc_get_vblank_counter(crtc);
/* Ensure that the work item is consistent when activating it ... */
smp_mb__before_atomic();
atomic_set(&work->pending, 1);
}
static int intel_gen2_queue_flip(struct drm_device *dev,
struct drm_crtc *crtc,
struct drm_framebuffer *fb,
......@@ -11352,154 +11195,6 @@ static int intel_gen7_queue_flip(struct drm_device *dev,
return 0;
}
static struct intel_engine_cs *
intel_get_flip_engine(struct drm_device *dev,
struct drm_i915_private *dev_priv,
struct drm_i915_gem_object *obj)
{
if (IS_VALLEYVIEW(dev) || IS_IVYBRIDGE(dev) || IS_HASWELL(dev))
return &dev_priv->engine[BCS];
if (dev_priv->info.gen >= 7) {
struct intel_engine_cs *engine;
engine = i915_gem_request_get_engine(obj->last_write_req);
if (engine && engine->id == RCS)
return engine;
return &dev_priv->engine[BCS];
} else
return &dev_priv->engine[RCS];
}
static bool
flip_fb_compatible(struct drm_device *dev,
struct drm_framebuffer *fb,
struct drm_framebuffer *old_fb)
{
struct drm_i915_gem_object *obj = intel_fb_obj(fb);
struct drm_i915_gem_object *old_obj = intel_fb_obj(old_fb);
if (old_fb->pixel_format != fb->pixel_format)
return false;
if (INTEL_INFO(dev)->gen > 3 &&
(fb->offsets[0] != old_fb->offsets[0] ||
fb->pitches[0] != old_fb->pitches[0]))
return false;
/* vlv: DISPLAY_FLIP fails to change tiling */
if (IS_VALLEYVIEW(dev) && obj->tiling_mode != old_obj->tiling_mode)
return false;
return true;
}
static void
intel_display_flip_prepare(struct drm_device *dev, struct drm_crtc *crtc,
struct intel_flip_work *work)
{
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
if (work->flip_prepared)
return;
work->flip_prepared = true;
if (INTEL_INFO(dev)->gen >= 5 || IS_G4X(dev))
work->flip_count = I915_READ(PIPE_FLIPCOUNT_G4X(intel_crtc->pipe)) + 1;
work->flip_queued_vblank = drm_crtc_vblank_count(crtc);
intel_frontbuffer_flip_prepare(dev, work->new_crtc_state->fb_bits);
}
static void intel_flip_schedule_request(struct intel_flip_work *work, struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_plane_state *new_state = work->new_plane_state[0];
struct intel_plane_state *old_state = work->old_plane_state[0];
struct drm_framebuffer *fb, *old_fb;
struct drm_i915_gem_request *request = NULL;
struct intel_engine_cs *engine;
struct drm_i915_gem_object *obj;
struct fence *fence;
int ret;
to_intel_crtc(crtc)->reset_counter = i915_reset_counter(&dev_priv->gpu_error);
if (__i915_reset_in_progress_or_wedged(to_intel_crtc(crtc)->reset_counter))
goto mmio;
if (i915_terminally_wedged(&dev_priv->gpu_error) ||
i915_reset_in_progress(&dev_priv->gpu_error) ||
i915.enable_execlists || i915.use_mmio_flip > 0 ||
!dev_priv->display.queue_flip)
goto mmio;
/* Not right after modesetting, surface parameters need to be updated */
if (needs_modeset(crtc->state) ||
to_intel_crtc_state(crtc->state)->update_pipe)
goto mmio;
/* Only allow a mmio flip for a primary plane without a dma-buf fence */
if (work->num_planes != 1 ||
new_state->base.plane != crtc->primary ||
new_state->base.fence)
goto mmio;
fence = work->old_plane_state[0]->base.fence;
if (fence && !fence_is_signaled(fence))
goto mmio;
old_fb = old_state->base.fb;
fb = new_state->base.fb;
obj = intel_fb_obj(fb);
trace_i915_flip_request(to_intel_crtc(crtc)->plane, obj);
/* Only when updating a already visible fb. */
if (!new_state->visible || !old_state->visible)
goto mmio;
if (!flip_fb_compatible(dev, fb, old_fb))
goto mmio;
engine = intel_get_flip_engine(dev, dev_priv, obj);
if (i915.use_mmio_flip == 0 && obj->last_write_req &&
i915_gem_request_get_engine(obj->last_write_req) != engine)
goto mmio;
work->gtt_offset = intel_plane_obj_offset(to_intel_plane(crtc->primary), obj, 0);
work->gtt_offset += to_intel_crtc(crtc)->dspaddr_offset;
ret = i915_gem_object_sync(obj, engine, &request);
if (!ret && !request) {
request = i915_gem_request_alloc(engine, NULL);
ret = PTR_ERR_OR_ZERO(request);
if (ret)
request = NULL;
}
intel_display_flip_prepare(dev, crtc, work);
if (!ret)
ret = dev_priv->display.queue_flip(dev, crtc, fb, obj, request, 0);
if (!ret) {
i915_gem_request_assign(&work->flip_queued_req, request);
intel_mark_page_flip_active(to_intel_crtc(crtc), work);
i915_add_request_no_flush(request);
return;
}
if (request)
i915_add_request_no_flush(request);
mmio:
schedule_work(&work->mmio_work);
}
static void intel_mmio_flip_work_func(struct work_struct *w)
{
struct intel_flip_work *work =
......@@ -11527,7 +11222,7 @@ static void intel_mmio_flip_work_func(struct work_struct *w)
&dev_priv->rps.mmioflips));
}
intel_display_flip_prepare(dev, crtc, work);
intel_frontbuffer_flip_prepare(dev, crtc_state->fb_bits);
intel_pipe_update_start(intel_crtc);
if (!needs_modeset(&crtc_state->base)) {
......@@ -11552,80 +11247,6 @@ static void intel_mmio_flip_work_func(struct work_struct *w)
intel_pipe_update_end(intel_crtc, work);
}
static bool __pageflip_stall_check_cs(struct drm_i915_private *dev_priv,
struct intel_crtc *intel_crtc,
struct intel_flip_work *work)
{
u32 addr, vblank;
if (!atomic_read(&work->pending) ||
work_busy(&work->unpin_work))
return false;
smp_rmb();
vblank = intel_crtc_get_vblank_counter(intel_crtc);
if (work->flip_ready_vblank == 0) {
if (work->flip_queued_req &&
!i915_gem_request_completed(work->flip_queued_req, true))
return false;
work->flip_ready_vblank = vblank;
}
if (vblank - work->flip_ready_vblank < 3)
return false;
/* Potential stall - if we see that the flip has happened,
* assume a missed interrupt. */
if (INTEL_GEN(dev_priv) >= 4)
addr = I915_HI_DISPBASE(I915_READ(DSPSURF(intel_crtc->plane)));
else
addr = I915_READ(DSPADDR(intel_crtc->plane));
/* There is a potential issue here with a false positive after a flip
* to the same address. We could address this by checking for a
* non-incrementing frame counter.
*/
return addr == work->gtt_offset;
}
void intel_check_page_flip(struct drm_i915_private *dev_priv, int pipe)
{
struct drm_device *dev = dev_priv->dev;
struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
struct intel_flip_work *work;
WARN_ON(!in_interrupt());
if (crtc == NULL)
return;
spin_lock(&dev->event_lock);
while (!list_empty(&intel_crtc->flip_work)) {
work = list_first_entry(&intel_crtc->flip_work,
struct intel_flip_work, head);
if (is_mmio_work(work))
break;
if (__pageflip_stall_check_cs(dev_priv, intel_crtc, work)) {
WARN_ONCE(1,
"Kicking stuck page flip: queued at %d, now %d\n",
work->flip_queued_vblank, intel_crtc_get_vblank_counter(intel_crtc));
page_flip_completed(intel_crtc, work);
continue;
}
if (intel_crtc_get_vblank_counter(intel_crtc) - work->flip_queued_vblank > 1)
intel_queue_rps_boost_for_request(work->flip_queued_req);
break;
}
spin_unlock(&dev->event_lock);
}
static struct fence *intel_get_excl_fence(struct drm_i915_gem_object *obj)
{
struct reservation_object *resv;
......@@ -11789,7 +11410,8 @@ static int intel_crtc_page_flip(struct drm_crtc *crtc,
intel_fbc_pre_update(intel_crtc);
intel_flip_schedule_request(work, crtc);
intel_crtc->reset_counter = i915_reset_counter(&dev_priv->gpu_error);
schedule_work(&work->mmio_work);
mutex_unlock(&dev->struct_mutex);
......
drivers/gpu/drm/i915/intel_drv.h
View file @ 8dd634d9
......@@ -977,16 +977,12 @@ struct intel_flip_work {
struct drm_pending_vblank_event *event;
atomic_t pending;
u32 flip_count;
u32 gtt_offset;
struct drm_i915_gem_request *flip_queued_req;
u32 flip_queued_vblank;
u32 flip_ready_vblank;
unsigned put_power_domains;
unsigned num_planes;
bool can_async_unpin, flip_prepared;
bool can_async_unpin;
unsigned fb_bits;
struct intel_crtc_state *old_crtc_state, *new_crtc_state;
......@@ -1202,9 +1198,8 @@ struct drm_framebuffer *
__intel_framebuffer_create(struct drm_device *dev,
struct drm_mode_fb_cmd2 *mode_cmd,
struct drm_i915_gem_object *obj);
void intel_finish_page_flip_cs(struct drm_i915_private *dev_priv, int pipe);
void intel_finish_page_flip_mmio(struct drm_i915_private *dev_priv, int pipe);
void intel_check_page_flip(struct drm_i915_private *dev_priv, int pipe);
int intel_prepare_plane_fb(struct drm_plane *plane,
const struct drm_plane_state *new_state);
void intel_cleanup_plane_fb(struct drm_plane *plane,
......
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