On Tue, May 17, 2016 at 03:07:55PM +0200, Maarten Lankhorst wrote:
> With mmio flips now available on all platforms it's time to remove
> support for cs flips.
>
> Signed-off-by: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>
Reviewed-by: Patrik Jakobsson <patrik.jakobsson@xxxxxxxxxxxxxxx>
> ---
> drivers/gpu/drm/i915/i915_debugfs.c | 19 +-
> drivers/gpu/drm/i915/i915_irq.c | 120 ++---------
> drivers/gpu/drm/i915/intel_display.c | 392 +----------------------------------
> drivers/gpu/drm/i915/intel_drv.h | 9 +-
> 4 files changed, 33 insertions(+), 507 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
> index 6bce4fd8aaf4..4c6b48dbd6e2 100644
> --- a/drivers/gpu/drm/i915/i915_debugfs.c
> +++ b/drivers/gpu/drm/i915/i915_debugfs.c
> @@ -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)
> diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
> index 3242a37fb304..5513c4cb02e0 100644
> --- a/drivers/gpu/drm/i915/i915_irq.c
> +++ b/drivers/gpu/drm/i915/i915_irq.c
> @@ -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;
> diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
> index b8b12177f1f0..19a382445306 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -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);
>
> diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
> index 83c0b998fb88..c538d821a728 100644
> --- a/drivers/gpu/drm/i915/intel_drv.h
> +++ b/drivers/gpu/drm/i915/intel_drv.h
> @@ -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,
> --
> 2.5.5
>
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx@xxxxxxxxxxxxxxxxxxxxx
> https://lists.freedesktop.org/mailman/listinfo/intel-gfx
--
Intel Sweden AB Registered Office: Knarrarnasgatan 15, 164 40 Kista, Stockholm, Sweden Registration Number: 556189-6027
_______________________________________________
Intel-gfx mailing list
Intel-gfx@xxxxxxxxxxxxxxxxxxxxx
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
