#include <linux/dma_remapping.h>
#include <linux/reservation.h>
-static bool is_mmio_work(struct intel_flip_work *work)
-{
- return work->mmio_work.func;
-}
-
/* Primary plane formats for gen <= 3 */
static const uint32_t i8xx_primary_formats[] = {
DRM_FORMAT_C8,
/* FDI must be feeding us bits for PCH ports */
assert_fdi_tx_enabled(dev_priv, (enum pipe) cpu_transcoder);
- assert_fdi_rx_enabled(dev_priv, TRANSCODER_A);
+ assert_fdi_rx_enabled(dev_priv, PIPE_A);
/* Workaround: set timing override bit. */
val = I915_READ(TRANS_CHICKEN2(PIPE_A));
I915_WRITE(TRANS_CHICKEN2(PIPE_A), val);
}
-enum transcoder intel_crtc_pch_transcoder(struct intel_crtc *crtc)
+enum pipe intel_crtc_pch_transcoder(struct intel_crtc *crtc)
{
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
WARN_ON(!crtc->config->has_pch_encoder);
if (HAS_PCH_LPT(dev_priv))
- return TRANSCODER_A;
+ return PIPE_A;
else
- return (enum transcoder) crtc->pipe;
+ return crtc->pipe;
}
/**
if (crtc->config->has_pch_encoder) {
/* if driving the PCH, we need FDI enabled */
assert_fdi_rx_pll_enabled(dev_priv,
- (enum pipe) intel_crtc_pch_transcoder(crtc));
+ intel_crtc_pch_transcoder(crtc));
assert_fdi_tx_pll_enabled(dev_priv,
(enum pipe) cpu_transcoder);
}
return false;
}
-/* Update plane->state->fb to match plane->fb after driver-internal updates */
-static void
-update_state_fb(struct drm_plane *plane)
-{
- if (plane->fb == plane->state->fb)
- return;
-
- if (plane->state->fb)
- drm_framebuffer_unreference(plane->state->fb);
- plane->state->fb = plane->fb;
- if (plane->state->fb)
- drm_framebuffer_reference(plane->state->fb);
-}
-
static void
intel_set_plane_visible(struct intel_crtc_state *crtc_state,
struct intel_plane_state *plane_state,
spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags);
}
-static void intel_complete_page_flips(struct drm_i915_private *dev_priv)
-{
- struct intel_crtc *crtc;
-
- for_each_intel_crtc(&dev_priv->drm, crtc)
- intel_finish_page_flip_cs(dev_priv, crtc->pipe);
-}
-
-static void intel_update_primary_planes(struct drm_device *dev)
-{
- struct drm_crtc *crtc;
-
- for_each_crtc(dev, crtc) {
- struct intel_plane *plane = to_intel_plane(crtc->primary);
- struct intel_plane_state *plane_state =
- to_intel_plane_state(plane->base.state);
-
- if (plane_state->base.visible) {
- trace_intel_update_plane(&plane->base,
- to_intel_crtc(crtc));
-
- plane->update_plane(plane,
- to_intel_crtc_state(crtc->state),
- plane_state);
- }
- }
-}
-
static int
__intel_display_resume(struct drm_device *dev,
struct drm_atomic_state *state,
struct drm_atomic_state *state;
int ret;
+
+ /* reset doesn't touch the display */
+ if (!i915.force_reset_modeset_test &&
+ !gpu_reset_clobbers_display(dev_priv))
+ return;
+
/*
* Need mode_config.mutex so that we don't
* trample ongoing ->detect() and whatnot.
drm_modeset_backoff(ctx);
}
-
- /* reset doesn't touch the display, but flips might get nuked anyway, */
- if (!i915.force_reset_modeset_test &&
- !gpu_reset_clobbers_display(dev_priv))
- return;
-
/*
* Disabling the crtcs gracefully seems nicer. Also the
* g33 docs say we should at least disable all the planes.
struct drm_atomic_state *state = dev_priv->modeset_restore_state;
int ret;
- /*
- * 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);
+ /* reset doesn't touch the display */
+ if (!i915.force_reset_modeset_test &&
+ !gpu_reset_clobbers_display(dev_priv))
+ return;
+
+ if (!state)
+ goto unlock;
dev_priv->modeset_restore_state = NULL;
/* reset doesn't touch the display */
if (!gpu_reset_clobbers_display(dev_priv)) {
- if (!state) {
- /*
- * Flips in the rings have been nuked by the reset,
- * so update the base address of all primary
- * planes to the the last fb to make sure we're
- * showing the correct fb after a reset.
- *
- * FIXME: Atomic will make this obsolete since we won't schedule
- * CS-based flips (which might get lost in gpu resets) any more.
- */
- intel_update_primary_planes(dev);
- } else {
- ret = __intel_display_resume(dev, state, ctx);
+ /* for testing only restore the display */
+ ret = __intel_display_resume(dev, state, ctx);
if (ret)
DRM_ERROR("Restoring old state failed with %i\n", ret);
- }
} else {
/*
* The display has been reset as well,
intel_hpd_init(dev_priv);
}
- if (state)
- drm_atomic_state_put(state);
+ drm_atomic_state_put(state);
+unlock:
drm_modeset_drop_locks(ctx);
drm_modeset_acquire_fini(ctx);
mutex_unlock(&dev->mode_config.mutex);
}
-static bool abort_flip_on_reset(struct intel_crtc *crtc)
-{
- struct i915_gpu_error *error = &to_i915(crtc->base.dev)->gpu_error;
-
- if (i915_reset_backoff(error))
- return true;
-
- if (crtc->reset_count != i915_reset_count(error))
- return true;
-
- return false;
-}
-
-static bool intel_crtc_has_pending_flip(struct drm_crtc *crtc)
-{
- struct drm_device *dev = crtc->dev;
- struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
- bool pending;
-
- if (abort_flip_on_reset(intel_crtc))
- return false;
-
- spin_lock_irq(&dev->event_lock);
- pending = to_intel_crtc(crtc)->flip_work != NULL;
- spin_unlock_irq(&dev->event_lock);
-
- return pending;
-}
-
static void intel_update_pipe_config(struct intel_crtc *crtc,
struct intel_crtc_state *old_crtc_state)
{
bool intel_has_pending_fb_unpin(struct drm_i915_private *dev_priv)
{
- struct intel_crtc *crtc;
-
- /* Note that we don't need to be called with mode_config.lock here
- * as our list of CRTC objects is static for the lifetime of the
- * device and so cannot disappear as we iterate. Similarly, we can
- * happily treat the predicates as racy, atomic checks as userspace
- * cannot claim and pin a new fb without at least acquring the
- * struct_mutex and so serialising with us.
- */
- for_each_intel_crtc(&dev_priv->drm, crtc) {
- if (atomic_read(&crtc->unpin_work_count) == 0)
+ struct drm_crtc *crtc;
+ bool cleanup_done;
+
+ drm_for_each_crtc(crtc, &dev_priv->drm) {
+ struct drm_crtc_commit *commit;
+ spin_lock(&crtc->commit_lock);
+ commit = list_first_entry_or_null(&crtc->commit_list,
+ struct drm_crtc_commit, commit_entry);
+ cleanup_done = commit ?
+ try_wait_for_completion(&commit->cleanup_done) : true;
+ spin_unlock(&crtc->commit_lock);
+
+ if (cleanup_done)
continue;
- if (crtc->flip_work)
- intel_wait_for_vblank(dev_priv, crtc->pipe);
+ drm_crtc_wait_one_vblank(crtc);
return true;
}
return false;
}
-static void page_flip_completed(struct intel_crtc *intel_crtc)
-{
- struct drm_i915_private *dev_priv = to_i915(intel_crtc->base.dev);
- struct intel_flip_work *work = intel_crtc->flip_work;
-
- intel_crtc->flip_work = NULL;
-
- if (work->event)
- drm_crtc_send_vblank_event(&intel_crtc->base, work->event);
-
- drm_crtc_vblank_put(&intel_crtc->base);
-
- wake_up_all(&dev_priv->pending_flip_queue);
- trace_i915_flip_complete(intel_crtc->plane,
- work->pending_flip_obj);
-
- queue_work(dev_priv->wq, &work->unpin_work);
-}
-
-static int intel_crtc_wait_for_pending_flips(struct drm_crtc *crtc)
-{
- struct drm_device *dev = crtc->dev;
- struct drm_i915_private *dev_priv = to_i915(dev);
- long ret;
-
- WARN_ON(waitqueue_active(&dev_priv->pending_flip_queue));
-
- ret = wait_event_interruptible_timeout(
- dev_priv->pending_flip_queue,
- !intel_crtc_has_pending_flip(crtc),
- 60*HZ);
-
- 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);
- work = intel_crtc->flip_work;
- if (work && !is_mmio_work(work)) {
- WARN_ONCE(1, "Removing stuck page flip\n");
- page_flip_completed(intel_crtc);
- }
- spin_unlock_irq(&dev->event_lock);
- }
-
- return 0;
-}
-
void lpt_disable_iclkip(struct drm_i915_private *dev_priv)
{
u32 temp;
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
- assert_pch_transcoder_disabled(dev_priv, TRANSCODER_A);
+ assert_pch_transcoder_disabled(dev_priv, PIPE_A);
lpt_program_iclkip(crtc);
return;
if (intel_crtc->config->has_pch_encoder)
- intel_set_pch_fifo_underrun_reporting(dev_priv, TRANSCODER_A,
- false);
+ intel_set_pch_fifo_underrun_reporting(dev_priv, PIPE_A, false);
intel_encoders_pre_pll_enable(crtc, pipe_config, old_state);
intel_wait_for_vblank(dev_priv, pipe);
intel_wait_for_vblank(dev_priv, pipe);
intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
- intel_set_pch_fifo_underrun_reporting(dev_priv, TRANSCODER_A,
- true);
+ intel_set_pch_fifo_underrun_reporting(dev_priv, PIPE_A, true);
}
/* If we change the relative order between pipe/planes enabling, we need
enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
if (intel_crtc->config->has_pch_encoder)
- intel_set_pch_fifo_underrun_reporting(dev_priv, TRANSCODER_A,
- false);
+ intel_set_pch_fifo_underrun_reporting(dev_priv, PIPE_A, false);
intel_encoders_disable(crtc, old_crtc_state, old_state);
intel_encoders_post_disable(crtc, old_crtc_state, old_state);
if (old_crtc_state->has_pch_encoder)
- intel_set_pch_fifo_underrun_reporting(dev_priv, TRANSCODER_A,
- true);
+ intel_set_pch_fifo_underrun_reporting(dev_priv, PIPE_A, true);
}
static void i9xx_pfit_enable(struct intel_crtc *crtc)
return;
if (crtc->primary->state->visible) {
- WARN_ON(intel_crtc->flip_work);
-
intel_pre_disable_primary_noatomic(crtc);
intel_crtc_disable_planes(crtc, 1 << drm_plane_index(crtc->primary));
* On some platforms writing CURCNTR first will also
* cause CURPOS to be armed by the CURBASE write.
* Without the CURCNTR write the CURPOS write would
- * arm itself.
+ * arm itself. Thus we always start the full update
+ * with a CURCNTR write.
+ *
+ * On other platforms CURPOS always requires the
+ * CURBASE write to arm the update. Additonally
+ * a write to any of the cursor register will cancel
+ * an already armed cursor update. Thus leaving out
+ * the CURBASE write after CURPOS could lead to a
+ * cursor that doesn't appear to move, or even change
+ * shape. Thus we always write CURBASE.
*
* CURCNTR and CUR_FBC_CTL are always
* armed by the CURBASE write only.
plane->cursor.cntl = cntl;
} else {
I915_WRITE_FW(CURPOS(pipe), pos);
+ I915_WRITE_FW(CURBASE(pipe), base);
}
POSTING_READ_FW(CURBASE(pipe));
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_flip_work *work;
-
- spin_lock_irq(&dev->event_lock);
- work = intel_crtc->flip_work;
- intel_crtc->flip_work = NULL;
- spin_unlock_irq(&dev->event_lock);
-
- if (work) {
- cancel_work_sync(&work->mmio_work);
- cancel_work_sync(&work->unpin_work);
- kfree(work);
- }
drm_crtc_cleanup(crtc);
-
kfree(intel_crtc);
}
-static void intel_unpin_work_fn(struct work_struct *__work)
-{
- struct intel_flip_work *work =
- container_of(__work, struct intel_flip_work, unpin_work);
- struct intel_crtc *crtc = to_intel_crtc(work->crtc);
- struct drm_device *dev = crtc->base.dev;
- struct drm_plane *primary = crtc->base.primary;
-
- if (is_mmio_work(work))
- flush_work(&work->mmio_work);
-
- mutex_lock(&dev->struct_mutex);
- intel_unpin_fb_vma(work->old_vma);
- i915_gem_object_put(work->pending_flip_obj);
- mutex_unlock(&dev->struct_mutex);
-
- i915_gem_request_put(work->flip_queued_req);
-
- intel_frontbuffer_flip_complete(to_i915(dev),
- to_intel_plane(primary)->frontbuffer_bit);
- intel_fbc_post_update(crtc);
- drm_framebuffer_unreference(work->old_fb);
-
- BUG_ON(atomic_read(&crtc->unpin_work_count) == 0);
- atomic_dec(&crtc->unpin_work_count);
-
- 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 = to_i915(dev);
-
- if (abort_flip_on_reset(crtc))
- 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_GEN(dev_priv) < 5 && !IS_G4X(dev_priv))
- 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) ==
- crtc->flip_work->gtt_offset &&
- g4x_flip_count_after_eq(I915_READ(PIPE_FLIPCOUNT_G4X(crtc->pipe)),
- crtc->flip_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)
-{
- if (!atomic_read(&work->pending))
- return false;
-
- 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->drm;
- struct intel_crtc *crtc = intel_get_crtc_for_pipe(dev_priv, pipe);
- 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.
- */
- spin_lock_irqsave(&dev->event_lock, flags);
- work = crtc->flip_work;
-
- if (work != NULL &&
- !is_mmio_work(work) &&
- pageflip_finished(crtc, work))
- page_flip_completed(crtc);
-
- spin_unlock_irqrestore(&dev->event_lock, flags);
-}
-
-void intel_finish_page_flip_mmio(struct drm_i915_private *dev_priv, int pipe)
-{
- struct drm_device *dev = &dev_priv->drm;
- struct intel_crtc *crtc = intel_get_crtc_for_pipe(dev_priv, pipe);
- 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.
- */
- spin_lock_irqsave(&dev->event_lock, flags);
- work = crtc->flip_work;
-
- if (work != NULL &&
- is_mmio_work(work) &&
- pageflip_finished(crtc, work))
- page_flip_completed(crtc);
-
- 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,
- struct drm_i915_gem_object *obj,
- struct drm_i915_gem_request *req,
- uint32_t flags)
-{
- struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
- u32 flip_mask, *cs;
-
- cs = intel_ring_begin(req, 6);
- if (IS_ERR(cs))
- return PTR_ERR(cs);
-
- /* 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;
- *cs++ = MI_WAIT_FOR_EVENT | flip_mask;
- *cs++ = MI_NOOP;
- *cs++ = MI_DISPLAY_FLIP | MI_DISPLAY_FLIP_PLANE(intel_crtc->plane);
- *cs++ = fb->pitches[0];
- *cs++ = intel_crtc->flip_work->gtt_offset;
- *cs++ = 0; /* aux display base address, unused */
-
- return 0;
-}
-
-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_gem_request *req,
- uint32_t flags)
-{
- struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
- u32 flip_mask, *cs;
-
- cs = intel_ring_begin(req, 6);
- if (IS_ERR(cs))
- return PTR_ERR(cs);
-
- if (intel_crtc->plane)
- flip_mask = MI_WAIT_FOR_PLANE_B_FLIP;
- else
- flip_mask = MI_WAIT_FOR_PLANE_A_FLIP;
- *cs++ = MI_WAIT_FOR_EVENT | flip_mask;
- *cs++ = MI_NOOP;
- *cs++ = MI_DISPLAY_FLIP_I915 | MI_DISPLAY_FLIP_PLANE(intel_crtc->plane);
- *cs++ = fb->pitches[0];
- *cs++ = intel_crtc->flip_work->gtt_offset;
- *cs++ = MI_NOOP;
-
- return 0;
-}
-
-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_request *req,
- uint32_t flags)
-{
- struct drm_i915_private *dev_priv = to_i915(dev);
- struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
- u32 pf, pipesrc, *cs;
-
- cs = intel_ring_begin(req, 4);
- if (IS_ERR(cs))
- return PTR_ERR(cs);
-
- /* 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.
- */
- *cs++ = MI_DISPLAY_FLIP | MI_DISPLAY_FLIP_PLANE(intel_crtc->plane);
- *cs++ = fb->pitches[0];
- *cs++ = intel_crtc->flip_work->gtt_offset |
- intel_fb_modifier_to_tiling(fb->modifier);
-
- /* 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;
- *cs++ = pf | pipesrc;
-
- return 0;
-}
-
-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_request *req,
- uint32_t flags)
-{
- struct drm_i915_private *dev_priv = to_i915(dev);
- struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
- u32 pf, pipesrc, *cs;
-
- cs = intel_ring_begin(req, 4);
- if (IS_ERR(cs))
- return PTR_ERR(cs);
-
- *cs++ = MI_DISPLAY_FLIP | MI_DISPLAY_FLIP_PLANE(intel_crtc->plane);
- *cs++ = fb->pitches[0] | intel_fb_modifier_to_tiling(fb->modifier);
- *cs++ = intel_crtc->flip_work->gtt_offset;
-
- /* Contrary to the suggestions in the documentation,
- * "Enable Panel Fitter" does not seem to be required when page
- * flipping with a non-native mode, and worse causes a normal
- * modeset to fail.
- * pf = I915_READ(PF_CTL(intel_crtc->pipe)) & PF_ENABLE;
- */
- pf = 0;
- pipesrc = I915_READ(PIPESRC(intel_crtc->pipe)) & 0x0fff0fff;
- *cs++ = pf | pipesrc;
-
- return 0;
-}
-
-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_gem_request *req,
- uint32_t flags)
-{
- struct drm_i915_private *dev_priv = to_i915(dev);
- struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
- u32 *cs, plane_bit = 0;
- int len, ret;
-
- switch (intel_crtc->plane) {
- case PLANE_A:
- plane_bit = MI_DISPLAY_FLIP_IVB_PLANE_A;
- break;
- case PLANE_B:
- plane_bit = MI_DISPLAY_FLIP_IVB_PLANE_B;
- break;
- case PLANE_C:
- plane_bit = MI_DISPLAY_FLIP_IVB_PLANE_C;
- break;
- default:
- WARN_ONCE(1, "unknown plane in flip command\n");
- return -ENODEV;
- }
-
- len = 4;
- if (req->engine->id == RCS) {
- len += 6;
- /*
- * On Gen 8, SRM is now taking an extra dword to accommodate
- * 48bits addresses, and we need a NOOP for the batch size to
- * stay even.
- */
- if (IS_GEN8(dev_priv))
- len += 2;
- }
-
- /*
- * BSpec MI_DISPLAY_FLIP for IVB:
- * "The full packet must be contained within the same cache line."
- *
- * Currently the LRI+SRM+MI_DISPLAY_FLIP all fit within the same
- * cacheline, if we ever start emitting more commands before
- * the MI_DISPLAY_FLIP we may need to first emit everything else,
- * then do the cacheline alignment, and finally emit the
- * MI_DISPLAY_FLIP.
- */
- ret = intel_ring_cacheline_align(req);
- if (ret)
- return ret;
-
- cs = intel_ring_begin(req, len);
- if (IS_ERR(cs))
- return PTR_ERR(cs);
-
- /* Unmask the flip-done completion message. Note that the bspec says that
- * we should do this for both the BCS and RCS, and that we must not unmask
- * more than one flip event at any time (or ensure that one flip message
- * can be sent by waiting for flip-done prior to queueing new flips).
- * Experimentation says that BCS works despite DERRMR masking all
- * flip-done completion events and that unmasking all planes at once
- * for the RCS also doesn't appear to drop events. Setting the DERRMR
- * to zero does lead to lockups within MI_DISPLAY_FLIP.
- */
- if (req->engine->id == RCS) {
- *cs++ = MI_LOAD_REGISTER_IMM(1);
- *cs++ = i915_mmio_reg_offset(DERRMR);
- *cs++ = ~(DERRMR_PIPEA_PRI_FLIP_DONE |
- DERRMR_PIPEB_PRI_FLIP_DONE |
- DERRMR_PIPEC_PRI_FLIP_DONE);
- if (IS_GEN8(dev_priv))
- *cs++ = MI_STORE_REGISTER_MEM_GEN8 |
- MI_SRM_LRM_GLOBAL_GTT;
- else
- *cs++ = MI_STORE_REGISTER_MEM | MI_SRM_LRM_GLOBAL_GTT;
- *cs++ = i915_mmio_reg_offset(DERRMR);
- *cs++ = i915_ggtt_offset(req->engine->scratch) + 256;
- if (IS_GEN8(dev_priv)) {
- *cs++ = 0;
- *cs++ = MI_NOOP;
- }
- }
-
- *cs++ = MI_DISPLAY_FLIP_I915 | plane_bit;
- *cs++ = fb->pitches[0] | intel_fb_modifier_to_tiling(fb->modifier);
- *cs++ = intel_crtc->flip_work->gtt_offset;
- *cs++ = MI_NOOP;
-
- return 0;
-}
-
-static bool use_mmio_flip(struct intel_engine_cs *engine,
- struct drm_i915_gem_object *obj)
-{
- /*
- * This is not being used for older platforms, because
- * non-availability of flip done interrupt forces us to use
- * CS flips. Older platforms derive flip done using some clever
- * tricks involving the flip_pending status bits and vblank irqs.
- * So using MMIO flips there would disrupt this mechanism.
- */
-
- if (engine == NULL)
- return true;
-
- if (INTEL_GEN(engine->i915) < 5)
- return false;
-
- if (i915.use_mmio_flip < 0)
- return false;
- else if (i915.use_mmio_flip > 0)
- return true;
- else if (i915.enable_execlists)
- return true;
-
- return engine != i915_gem_object_last_write_engine(obj);
-}
-
-static void skl_do_mmio_flip(struct intel_crtc *intel_crtc,
- unsigned int rotation,
- struct intel_flip_work *work)
-{
- struct drm_device *dev = intel_crtc->base.dev;
- struct drm_i915_private *dev_priv = to_i915(dev);
- struct drm_framebuffer *fb = intel_crtc->base.primary->fb;
- const enum pipe pipe = intel_crtc->pipe;
- u32 ctl, stride = skl_plane_stride(fb, 0, rotation);
-
- ctl = I915_READ(PLANE_CTL(pipe, 0));
- ctl &= ~PLANE_CTL_TILED_MASK;
- switch (fb->modifier) {
- case DRM_FORMAT_MOD_LINEAR:
- break;
- case I915_FORMAT_MOD_X_TILED:
- ctl |= PLANE_CTL_TILED_X;
- break;
- case I915_FORMAT_MOD_Y_TILED:
- ctl |= PLANE_CTL_TILED_Y;
- break;
- case I915_FORMAT_MOD_Yf_TILED:
- ctl |= PLANE_CTL_TILED_YF;
- break;
- default:
- MISSING_CASE(fb->modifier);
- }
-
- /*
- * Both PLANE_CTL and PLANE_STRIDE are not updated on vblank but on
- * PLANE_SURF updates, the update is then guaranteed to be atomic.
- */
- I915_WRITE(PLANE_CTL(pipe, 0), ctl);
- I915_WRITE(PLANE_STRIDE(pipe, 0), stride);
-
- I915_WRITE(PLANE_SURF(pipe, 0), work->gtt_offset);
- POSTING_READ(PLANE_SURF(pipe, 0));
-}
-
-static void ilk_do_mmio_flip(struct intel_crtc *intel_crtc,
- struct intel_flip_work *work)
-{
- struct drm_device *dev = intel_crtc->base.dev;
- struct drm_i915_private *dev_priv = to_i915(dev);
- struct drm_framebuffer *fb = intel_crtc->base.primary->fb;
- i915_reg_t reg = DSPCNTR(intel_crtc->plane);
- u32 dspcntr;
-
- dspcntr = I915_READ(reg);
-
- if (fb->modifier == I915_FORMAT_MOD_X_TILED)
- dspcntr |= DISPPLANE_TILED;
- else
- dspcntr &= ~DISPPLANE_TILED;
-
- I915_WRITE(reg, dspcntr);
-
- I915_WRITE(DSPSURF(intel_crtc->plane), work->gtt_offset);
- POSTING_READ(DSPSURF(intel_crtc->plane));
-}
-
-static void intel_mmio_flip_work_func(struct work_struct *w)
-{
- struct intel_flip_work *work =
- container_of(w, struct intel_flip_work, mmio_work);
- struct intel_crtc *crtc = to_intel_crtc(work->crtc);
- struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
- struct intel_framebuffer *intel_fb =
- to_intel_framebuffer(crtc->base.primary->fb);
- struct drm_i915_gem_object *obj = intel_fb->obj;
-
- WARN_ON(i915_gem_object_wait(obj, 0, MAX_SCHEDULE_TIMEOUT, NULL) < 0);
-
- intel_pipe_update_start(crtc);
-
- if (INTEL_GEN(dev_priv) >= 9)
- skl_do_mmio_flip(crtc, work->rotation, work);
- else
- /* use_mmio_flip() retricts MMIO flips to ilk+ */
- ilk_do_mmio_flip(crtc, work);
-
- intel_pipe_update_end(crtc, work);
-}
-
-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_gem_request *req,
- uint32_t flags)
-{
- return -ENODEV;
-}
-
-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))
- 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))
- 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->drm;
- struct intel_crtc *crtc = intel_get_crtc_for_pipe(dev_priv, pipe);
- struct intel_flip_work *work;
-
- WARN_ON(!in_interrupt());
-
- if (crtc == NULL)
- return;
-
- spin_lock(&dev->event_lock);
- work = crtc->flip_work;
-
- if (work != NULL && !is_mmio_work(work) &&
- __pageflip_stall_check_cs(dev_priv, crtc, work)) {
- WARN_ONCE(1,
- "Kicking stuck page flip: queued at %d, now %d\n",
- work->flip_queued_vblank, intel_crtc_get_vblank_counter(crtc));
- page_flip_completed(crtc);
- work = NULL;
- }
-
- if (work != NULL && !is_mmio_work(work) &&
- intel_crtc_get_vblank_counter(crtc) - work->flip_queued_vblank > 1)
- intel_queue_rps_boost_for_request(work->flip_queued_req);
- spin_unlock(&dev->event_lock);
-}
-
-__maybe_unused
-static int intel_crtc_page_flip(struct drm_crtc *crtc,
- struct drm_framebuffer *fb,
- struct drm_pending_vblank_event *event,
- uint32_t page_flip_flags)
-{
- struct drm_device *dev = crtc->dev;
- struct drm_i915_private *dev_priv = to_i915(dev);
- struct drm_framebuffer *old_fb = crtc->primary->fb;
- struct drm_i915_gem_object *obj = intel_fb_obj(fb);
- struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
- struct drm_plane *primary = crtc->primary;
- enum pipe pipe = intel_crtc->pipe;
- struct intel_flip_work *work;
- struct intel_engine_cs *engine;
- bool mmio_flip;
- struct drm_i915_gem_request *request;
- struct i915_vma *vma;
- int ret;
-
- /*
- * drm_mode_page_flip_ioctl() should already catch this, but double
- * check to be safe. In the future we may enable pageflipping from
- * a disabled primary plane.
- */
- if (WARN_ON(intel_fb_obj(old_fb) == NULL))
- return -EBUSY;
-
- /* Can't change pixel format via MI display flips. */
- if (fb->format != crtc->primary->fb->format)
- return -EINVAL;
-
- /*
- * TILEOFF/LINOFF registers can't be changed via MI display flips.
- * Note that pitch changes could also affect these register.
- */
- if (INTEL_GEN(dev_priv) > 3 &&
- (fb->offsets[0] != crtc->primary->fb->offsets[0] ||
- fb->pitches[0] != crtc->primary->fb->pitches[0]))
- return -EINVAL;
-
- if (i915_terminally_wedged(&dev_priv->gpu_error))
- goto out_hang;
-
- work = kzalloc(sizeof(*work), GFP_KERNEL);
- if (work == NULL)
- return -ENOMEM;
-
- work->event = event;
- work->crtc = crtc;
- work->old_fb = old_fb;
- INIT_WORK(&work->unpin_work, intel_unpin_work_fn);
-
- ret = drm_crtc_vblank_get(crtc);
- if (ret)
- goto free_work;
-
- /* We borrow the event spin lock for protecting flip_work */
- spin_lock_irq(&dev->event_lock);
- if (intel_crtc->flip_work) {
- /* Before declaring the flip queue wedged, check if
- * the hardware completed the operation behind our backs.
- */
- if (pageflip_finished(intel_crtc, intel_crtc->flip_work)) {
- DRM_DEBUG_DRIVER("flip queue: previous flip completed, continuing\n");
- page_flip_completed(intel_crtc);
- } else {
- DRM_DEBUG_DRIVER("flip queue: crtc already busy\n");
- spin_unlock_irq(&dev->event_lock);
-
- drm_crtc_vblank_put(crtc);
- kfree(work);
- return -EBUSY;
- }
- }
- intel_crtc->flip_work = work;
- spin_unlock_irq(&dev->event_lock);
-
- if (atomic_read(&intel_crtc->unpin_work_count) >= 2)
- flush_workqueue(dev_priv->wq);
-
- /* Reference the objects for the scheduled work. */
- drm_framebuffer_reference(work->old_fb);
-
- crtc->primary->fb = fb;
- update_state_fb(crtc->primary);
-
- work->pending_flip_obj = i915_gem_object_get(obj);
-
- ret = i915_mutex_lock_interruptible(dev);
- if (ret)
- goto cleanup;
-
- intel_crtc->reset_count = i915_reset_count(&dev_priv->gpu_error);
- if (i915_reset_backoff_or_wedged(&dev_priv->gpu_error)) {
- ret = -EIO;
- goto unlock;
- }
-
- atomic_inc(&intel_crtc->unpin_work_count);
-
- if (INTEL_GEN(dev_priv) >= 5 || IS_G4X(dev_priv))
- work->flip_count = I915_READ(PIPE_FLIPCOUNT_G4X(pipe)) + 1;
-
- if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
- engine = dev_priv->engine[BCS];
- if (fb->modifier != old_fb->modifier)
- /* vlv: DISPLAY_FLIP fails to change tiling */
- engine = NULL;
- } else if (IS_IVYBRIDGE(dev_priv) || IS_HASWELL(dev_priv)) {
- engine = dev_priv->engine[BCS];
- } else if (INTEL_GEN(dev_priv) >= 7) {
- engine = i915_gem_object_last_write_engine(obj);
- if (engine == NULL || engine->id != RCS)
- engine = dev_priv->engine[BCS];
- } else {
- engine = dev_priv->engine[RCS];
- }
-
- mmio_flip = use_mmio_flip(engine, obj);
-
- vma = intel_pin_and_fence_fb_obj(fb, primary->state->rotation);
- if (IS_ERR(vma)) {
- ret = PTR_ERR(vma);
- goto cleanup_pending;
- }
-
- work->old_vma = to_intel_plane_state(primary->state)->vma;
- to_intel_plane_state(primary->state)->vma = vma;
-
- work->gtt_offset = i915_ggtt_offset(vma) + intel_crtc->dspaddr_offset;
- work->rotation = crtc->primary->state->rotation;
-
- /*
- * There's the potential that the next frame will not be compatible with
- * FBC, so we want to call pre_update() before the actual page flip.
- * The problem is that pre_update() caches some information about the fb
- * object, so we want to do this only after the object is pinned. Let's
- * be on the safe side and do this immediately before scheduling the
- * flip.
- */
- intel_fbc_pre_update(intel_crtc, intel_crtc->config,
- to_intel_plane_state(primary->state));
-
- if (mmio_flip) {
- INIT_WORK(&work->mmio_work, intel_mmio_flip_work_func);
- queue_work(system_unbound_wq, &work->mmio_work);
- } else {
- request = i915_gem_request_alloc(engine,
- dev_priv->kernel_context);
- if (IS_ERR(request)) {
- ret = PTR_ERR(request);
- goto cleanup_unpin;
- }
-
- ret = i915_gem_request_await_object(request, obj, false);
- if (ret)
- goto cleanup_request;
-
- ret = dev_priv->display.queue_flip(dev, crtc, fb, obj, request,
- page_flip_flags);
- if (ret)
- goto cleanup_request;
-
- intel_mark_page_flip_active(intel_crtc, work);
-
- work->flip_queued_req = i915_gem_request_get(request);
- i915_add_request(request);
- }
-
- i915_gem_object_wait_priority(obj, 0, I915_PRIORITY_DISPLAY);
- i915_gem_track_fb(intel_fb_obj(old_fb), obj,
- to_intel_plane(primary)->frontbuffer_bit);
- mutex_unlock(&dev->struct_mutex);
-
- intel_frontbuffer_flip_prepare(to_i915(dev),
- to_intel_plane(primary)->frontbuffer_bit);
-
- trace_i915_flip_request(intel_crtc->plane, obj);
-
- return 0;
-
-cleanup_request:
- i915_add_request(request);
-cleanup_unpin:
- to_intel_plane_state(primary->state)->vma = work->old_vma;
- intel_unpin_fb_vma(vma);
-cleanup_pending:
- atomic_dec(&intel_crtc->unpin_work_count);
-unlock:
- mutex_unlock(&dev->struct_mutex);
-cleanup:
- crtc->primary->fb = old_fb;
- update_state_fb(crtc->primary);
-
- i915_gem_object_put(obj);
- drm_framebuffer_unreference(work->old_fb);
-
- spin_lock_irq(&dev->event_lock);
- intel_crtc->flip_work = NULL;
- spin_unlock_irq(&dev->event_lock);
-
- drm_crtc_vblank_put(crtc);
-free_work:
- kfree(work);
-
- if (ret == -EIO) {
- struct drm_atomic_state *state;
- struct drm_plane_state *plane_state;
-
-out_hang:
- state = drm_atomic_state_alloc(dev);
- if (!state)
- return -ENOMEM;
- state->acquire_ctx = dev->mode_config.acquire_ctx;
-
-retry:
- plane_state = drm_atomic_get_plane_state(state, primary);
- ret = PTR_ERR_OR_ZERO(plane_state);
- if (!ret) {
- drm_atomic_set_fb_for_plane(plane_state, fb);
-
- ret = drm_atomic_set_crtc_for_plane(plane_state, crtc);
- if (!ret)
- ret = drm_atomic_commit(state);
- }
-
- if (ret == -EDEADLK) {
- drm_modeset_backoff(state->acquire_ctx);
- drm_atomic_state_clear(state);
- goto retry;
- }
-
- drm_atomic_state_put(state);
-
- if (ret == 0 && event) {
- spin_lock_irq(&dev->event_lock);
- drm_crtc_send_vblank_event(crtc, event);
- spin_unlock_irq(&dev->event_lock);
- }
- }
- return ret;
-}
-
-
/**
* intel_wm_need_update - Check whether watermarks need updating
* @plane: drm plane
static int intel_atomic_prepare_commit(struct drm_device *dev,
struct drm_atomic_state *state)
{
- struct drm_i915_private *dev_priv = to_i915(dev);
- struct drm_crtc_state *crtc_state;
- struct drm_crtc *crtc;
- int i, ret;
-
- for_each_new_crtc_in_state(state, crtc, crtc_state, i) {
- if (state->legacy_cursor_update)
- continue;
-
- ret = intel_crtc_wait_for_pending_flips(crtc);
- if (ret)
- return ret;
-
- if (atomic_read(&to_intel_crtc(crtc)->unpin_work_count) >= 2)
- flush_workqueue(dev_priv->wq);
- }
+ int ret;
ret = mutex_lock_interruptible(&dev->struct_mutex);
if (ret)
{
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
- intel_pipe_update_end(intel_crtc, NULL);
+ intel_pipe_update_end(intel_crtc);
}
/**
dev_priv->display.update_crtcs = skl_update_crtcs;
else
dev_priv->display.update_crtcs = intel_update_crtcs;
-
- switch (INTEL_INFO(dev_priv)->gen) {
- case 2:
- dev_priv->display.queue_flip = intel_gen2_queue_flip;
- break;
-
- case 3:
- dev_priv->display.queue_flip = intel_gen3_queue_flip;
- break;
-
- case 4:
- case 5:
- dev_priv->display.queue_flip = intel_gen4_queue_flip;
- break;
-
- case 6:
- dev_priv->display.queue_flip = intel_gen6_queue_flip;
- break;
- case 7:
- case 8: /* FIXME(BDW): Check that the gen8 RCS flip works. */
- dev_priv->display.queue_flip = intel_gen7_queue_flip;
- break;
- case 9:
- /* Drop through - unsupported since execlist only. */
- default:
- /* Default just returns -ENODEV to indicate unsupported */
- dev_priv->display.queue_flip = intel_default_queue_flip;
- }
}
/*
*/
drm_kms_helper_poll_fini(dev);
+ /* poll work can call into fbdev, hence clean that up afterwards */
+ intel_fbdev_fini(dev_priv);
+
intel_unregister_dsm_handler();
intel_fbc_global_disable(dev_priv);
git.samba.org / sfrench / cifs-2.6.git / blobdiff