struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
drm_crtc_cleanup(crtc);
- destroy_workqueue(radeon_crtc->flip_queue);
kfree(radeon_crtc);
}
-/**
- * radeon_unpin_work_func - unpin old buffer object
- *
- * @__work - kernel work item
- *
- * Unpin the old frame buffer object outside of the interrupt handler
+/*
+ * Handle unpin events outside the interrupt handler proper.
*/
static void radeon_unpin_work_func(struct work_struct *__work)
{
- struct radeon_flip_work *work =
- container_of(__work, struct radeon_flip_work, unpin_work);
+ struct radeon_unpin_work *work =
+ container_of(__work, struct radeon_unpin_work, work);
int r;
/* unpin of the old buffer */
void radeon_crtc_handle_vblank(struct radeon_device *rdev, int crtc_id)
{
struct radeon_crtc *radeon_crtc = rdev->mode_info.crtcs[crtc_id];
- struct radeon_flip_work *work;
+ struct radeon_unpin_work *work;
unsigned long flags;
u32 update_pending;
int vpos, hpos;
spin_lock_irqsave(&rdev->ddev->event_lock, flags);
- work = radeon_crtc->flip_work;
- if (work == NULL) {
+ work = radeon_crtc->unpin_work;
+ if (work == NULL ||
+ (work->fence && !radeon_fence_signaled(work->fence))) {
spin_unlock_irqrestore(&rdev->ddev->event_lock, flags);
return;
}
-
- update_pending = radeon_page_flip_pending(rdev, crtc_id);
+ /* New pageflip, or just completion of a previous one? */
+ if (!radeon_crtc->deferred_flip_completion) {
+ /* do the flip (mmio) */
+ radeon_page_flip(rdev, crtc_id, work->new_crtc_base);
+ update_pending = radeon_page_flip_pending(rdev, crtc_id);
+ } else {
+ /* This is just a completion of a flip queued in crtc
+ * at last invocation. Make sure we go directly to
+ * completion routine.
+ */
+ update_pending = 0;
+ }
/* Has the pageflip already completed in crtc, or is it certain
* to complete in this vblank?
*/
update_pending = 0;
}
- spin_unlock_irqrestore(&rdev->ddev->event_lock, flags);
- if (!update_pending)
+ if (update_pending) {
+ /* crtc didn't flip in this target vblank interval,
+ * but flip is pending in crtc. It will complete it
+ * in next vblank interval, so complete the flip at
+ * next vblank irq.
+ */
+ radeon_crtc->deferred_flip_completion = 1;
+ spin_unlock_irqrestore(&rdev->ddev->event_lock, flags);
+ return;
+ } else {
+ spin_unlock_irqrestore(&rdev->ddev->event_lock, flags);
radeon_crtc_handle_flip(rdev, crtc_id);
+ }
}
/**
void radeon_crtc_handle_flip(struct radeon_device *rdev, int crtc_id)
{
struct radeon_crtc *radeon_crtc = rdev->mode_info.crtcs[crtc_id];
- struct radeon_flip_work *work;
+ struct radeon_unpin_work *work;
unsigned long flags;
/* this can happen at init */
return;
spin_lock_irqsave(&rdev->ddev->event_lock, flags);
- work = radeon_crtc->flip_work;
+ work = radeon_crtc->unpin_work;
if (work == NULL) {
spin_unlock_irqrestore(&rdev->ddev->event_lock, flags);
return;
}
- /* Pageflip completed. Clean up. */
- radeon_crtc->flip_work = NULL;
+ /* Pageflip (will be) certainly completed in this vblank. Clean up. */
+ radeon_crtc->unpin_work = NULL;
+ radeon_crtc->deferred_flip_completion = 0;
/* wakeup userspace */
if (work->event)
radeon_fence_unref(&work->fence);
radeon_irq_kms_pflip_irq_get(rdev, work->crtc_id);
- queue_work(radeon_crtc->flip_queue, &work->unpin_work);
+ schedule_work(&work->work);
}
-/**
- * radeon_flip_work_func - page flip framebuffer
- *
- * @work - kernel work item
- *
- * Wait for the buffer object to become idle and do the actual page flip
- */
-static void radeon_flip_work_func(struct work_struct *__work)
+static int radeon_crtc_page_flip(struct drm_crtc *crtc,
+ struct drm_framebuffer *fb,
+ struct drm_pending_vblank_event *event,
+ uint32_t page_flip_flags)
{
- struct radeon_flip_work *work =
- container_of(__work, struct radeon_flip_work, flip_work);
- struct radeon_device *rdev = work->rdev;
- struct radeon_crtc *radeon_crtc = rdev->mode_info.crtcs[work->crtc_id];
+ struct drm_device *dev = crtc->dev;
+ struct radeon_device *rdev = dev->dev_private;
+ struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
+ struct radeon_framebuffer *old_radeon_fb;
+ struct radeon_framebuffer *new_radeon_fb;
+ struct drm_gem_object *obj;
+ struct radeon_bo *rbo;
+ struct radeon_unpin_work *work;
+ unsigned long flags;
+ u32 tiling_flags, pitch_pixels;
+ u64 base;
+ int r;
- struct drm_crtc *crtc = &radeon_crtc->base;
- struct drm_framebuffer *fb = work->fb;
+ work = kzalloc(sizeof *work, GFP_KERNEL);
+ if (work == NULL)
+ return -ENOMEM;
- uint32_t tiling_flags, pitch_pixels;
- uint64_t base;
+ work->event = event;
+ work->rdev = rdev;
+ work->crtc_id = radeon_crtc->crtc_id;
+ old_radeon_fb = to_radeon_framebuffer(crtc->primary->fb);
+ new_radeon_fb = to_radeon_framebuffer(fb);
+ /* schedule unpin of the old buffer */
+ obj = old_radeon_fb->obj;
+ /* take a reference to the old object */
+ drm_gem_object_reference(obj);
+ rbo = gem_to_radeon_bo(obj);
+ work->old_rbo = rbo;
+ obj = new_radeon_fb->obj;
+ rbo = gem_to_radeon_bo(obj);
- unsigned long flags;
- int r;
+ spin_lock(&rbo->tbo.bdev->fence_lock);
+ if (rbo->tbo.sync_obj)
+ work->fence = radeon_fence_ref(rbo->tbo.sync_obj);
+ spin_unlock(&rbo->tbo.bdev->fence_lock);
- down_read(&rdev->exclusive_lock);
- while (work->fence) {
- r = radeon_fence_wait(work->fence, false);
- if (r == -EDEADLK) {
- up_read(&rdev->exclusive_lock);
- r = radeon_gpu_reset(rdev);
- down_read(&rdev->exclusive_lock);
- }
+ INIT_WORK(&work->work, radeon_unpin_work_func);
- if (r) {
- DRM_ERROR("failed to wait on page flip fence (%d)!\n",
- r);
- goto cleanup;
- } else
- radeon_fence_unref(&work->fence);
+ /* We borrow the event spin lock for protecting unpin_work */
+ spin_lock_irqsave(&dev->event_lock, flags);
+ if (radeon_crtc->unpin_work) {
+ DRM_DEBUG_DRIVER("flip queue: crtc already busy\n");
+ r = -EBUSY;
+ goto unlock_free;
}
+ radeon_crtc->unpin_work = work;
+ radeon_crtc->deferred_flip_completion = 0;
+ spin_unlock_irqrestore(&dev->event_lock, flags);
/* pin the new buffer */
DRM_DEBUG_DRIVER("flip-ioctl() cur_fbo = %p, cur_bbo = %p\n",
- work->old_rbo, work->new_rbo);
+ work->old_rbo, rbo);
- r = radeon_bo_reserve(work->new_rbo, false);
+ r = radeon_bo_reserve(rbo, false);
if (unlikely(r != 0)) {
DRM_ERROR("failed to reserve new rbo buffer before flip\n");
- goto cleanup;
+ goto pflip_cleanup;
}
/* Only 27 bit offset for legacy CRTC */
- r = radeon_bo_pin_restricted(work->new_rbo, RADEON_GEM_DOMAIN_VRAM,
+ r = radeon_bo_pin_restricted(rbo, RADEON_GEM_DOMAIN_VRAM,
ASIC_IS_AVIVO(rdev) ? 0 : 1 << 27, &base);
if (unlikely(r != 0)) {
- radeon_bo_unreserve(work->new_rbo);
+ radeon_bo_unreserve(rbo);
r = -EINVAL;
DRM_ERROR("failed to pin new rbo buffer before flip\n");
- goto cleanup;
+ goto pflip_cleanup;
}
- radeon_bo_get_tiling_flags(work->new_rbo, &tiling_flags, NULL);
- radeon_bo_unreserve(work->new_rbo);
+ radeon_bo_get_tiling_flags(rbo, &tiling_flags, NULL);
+ radeon_bo_unreserve(rbo);
if (!ASIC_IS_AVIVO(rdev)) {
/* crtc offset is from display base addr not FB location */
base &= ~7;
}
- /* We borrow the event spin lock for protecting flip_work */
- spin_lock_irqsave(&crtc->dev->event_lock, flags);
+ spin_lock_irqsave(&dev->event_lock, flags);
+ work->new_crtc_base = base;
+ spin_unlock_irqrestore(&dev->event_lock, flags);
+
+ /* update crtc fb */
+ crtc->primary->fb = fb;
/* set the proper interrupt */
radeon_irq_kms_pflip_irq_get(rdev, radeon_crtc->crtc_id);
- /* do the flip (mmio) */
- radeon_page_flip(rdev, radeon_crtc->crtc_id, base);
-
- spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
- up_read(&rdev->exclusive_lock);
-
- return;
+ return 0;
-cleanup:
- drm_gem_object_unreference_unlocked(&work->old_rbo->gem_base);
+pflip_cleanup:
+ spin_lock_irqsave(&dev->event_lock, flags);
+ radeon_crtc->unpin_work = NULL;
+unlock_free:
+ spin_unlock_irqrestore(&dev->event_lock, flags);
+ drm_gem_object_unreference_unlocked(old_radeon_fb->obj);
radeon_fence_unref(&work->fence);
kfree(work);
- up_read(&rdev->exclusive_lock);
-}
-
-static int radeon_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 radeon_device *rdev = dev->dev_private;
- struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
- struct radeon_framebuffer *old_radeon_fb;
- struct radeon_framebuffer *new_radeon_fb;
- struct drm_gem_object *obj;
- struct radeon_flip_work *work;
- unsigned long flags;
-
- work = kzalloc(sizeof *work, GFP_KERNEL);
- if (work == NULL)
- return -ENOMEM;
-
- INIT_WORK(&work->flip_work, radeon_flip_work_func);
- INIT_WORK(&work->unpin_work, radeon_unpin_work_func);
- work->rdev = rdev;
- work->crtc_id = radeon_crtc->crtc_id;
- work->fb = fb;
- work->event = event;
-
- /* schedule unpin of the old buffer */
- old_radeon_fb = to_radeon_framebuffer(crtc->primary->fb);
- obj = old_radeon_fb->obj;
-
- /* take a reference to the old object */
- drm_gem_object_reference(obj);
- work->old_rbo = gem_to_radeon_bo(obj);
-
- new_radeon_fb = to_radeon_framebuffer(fb);
- obj = new_radeon_fb->obj;
- work->new_rbo = gem_to_radeon_bo(obj);
-
- spin_lock(&work->new_rbo->tbo.bdev->fence_lock);
- if (work->new_rbo->tbo.sync_obj)
- work->fence = radeon_fence_ref(work->new_rbo->tbo.sync_obj);
- spin_unlock(&work->new_rbo->tbo.bdev->fence_lock);
-
- /* update crtc fb */
- crtc->primary->fb = fb;
-
- /* We borrow the event spin lock for protecting flip_work */
- spin_lock_irqsave(&crtc->dev->event_lock, flags);
-
- if (radeon_crtc->flip_work) {
- DRM_DEBUG_DRIVER("flip queue: crtc already busy\n");
- spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
- drm_gem_object_unreference_unlocked(&work->old_rbo->gem_base);
- radeon_fence_unref(&work->fence);
- kfree(work);
- return -EBUSY;
- }
- radeon_crtc->flip_work = work;
-
- spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
-
- queue_work(radeon_crtc->flip_queue, &work->flip_work);
-
- return 0;
+ return r;
}
static int
drm_mode_crtc_set_gamma_size(&radeon_crtc->base, 256);
radeon_crtc->crtc_id = index;
- radeon_crtc->flip_queue = create_singlethread_workqueue("radeon-crtc");
rdev->mode_info.crtcs[index] = radeon_crtc;
if (rdev->family >= CHIP_BONAIRE) {
projects / openwrt / staging / blogic.git / commitdiff