#define OFC_UPDATE 0x1
#define OVERLAY_NONPHYSICAL(dev) (IS_G33(dev) || IS_I965G(dev))
-#define OVERLAY_EXISTS(dev) (!IS_G4X(dev) && !IS_IGDNG(dev))
+#define OVERLAY_EXISTS(dev) (!IS_G4X(dev) && !IS_IRONLAKE(dev))
static struct overlay_registers *intel_overlay_map_regs_atomic(struct intel_overlay *overlay)
BUG_ON(overlay->active);
+ overlay->active = 1;
+ overlay->hw_wedged = NEEDS_WAIT_FOR_FLIP;
+
BEGIN_LP_RING(6);
OUT_RING(MI_FLUSH);
OUT_RING(MI_NOOP);
OUT_RING(MI_NOOP);
ADVANCE_LP_RING();
- ret = i915_lp_ring_sync(dev);
- if (ret != 0) {
- DRM_ERROR("intel overlay: ring sync failed, hw likely wedged\n");
- overlay->hw_wedged = 1;
- return 0;
- }
+ overlay->last_flip_req = i915_add_request(dev, NULL, 0);
+ if (overlay->last_flip_req == 0)
+ return -ENOMEM;
- overlay->active = 1;
+ ret = i915_do_wait_request(dev, overlay->last_flip_req, 1);
+ if (ret != 0)
+ return ret;
+ overlay->hw_wedged = 0;
+ overlay->last_flip_req = 0;
return 0;
}
RING_LOCALS;
if (overlay->last_flip_req != 0) {
- ret = i915_do_wait_request(dev, overlay->last_flip_req, 0);
-
- if (ret != 0)
- return ret;
-
- overlay->last_flip_req = 0;
+ ret = i915_do_wait_request(dev, overlay->last_flip_req, 1);
+ if (ret == 0) {
+ overlay->last_flip_req = 0;
- tmp = I915_READ(ISR);
+ tmp = I915_READ(ISR);
- if (!(tmp & I915_OVERLAY_PLANE_FLIP_PENDING_INTERRUPT))
- return 0;
+ if (!(tmp & I915_OVERLAY_PLANE_FLIP_PENDING_INTERRUPT))
+ return 0;
+ }
}
/* synchronous slowpath */
+ overlay->hw_wedged = RELEASE_OLD_VID;
+
BEGIN_LP_RING(2);
OUT_RING(MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP);
OUT_RING(MI_NOOP);
ADVANCE_LP_RING();
- /* run in lockstep with the hw for easier testing */
- ret = i915_lp_ring_sync(dev);
- if (ret != 0) {
- DRM_ERROR("intel overlay: ring sync failed, hw likely wedged\n");
- overlay->hw_wedged = 1;
- }
+ overlay->last_flip_req = i915_add_request(dev, NULL, 0);
+ if (overlay->last_flip_req == 0)
+ return -ENOMEM;
- return ret;
+ ret = i915_do_wait_request(dev, overlay->last_flip_req, 1);
+ if (ret != 0)
+ return ret;
+
+ overlay->hw_wedged = 0;
+ overlay->last_flip_req = 0;
+ return 0;
}
/* overlay needs to be disabled in OCMD reg */
flip_addr |= OFC_UPDATE;
/* wait for overlay to go idle */
+ overlay->hw_wedged = SWITCH_OFF_STAGE_1;
+
BEGIN_LP_RING(6);
OUT_RING(MI_FLUSH);
OUT_RING(MI_NOOP);
OUT_RING(MI_NOOP);
ADVANCE_LP_RING();
- ret = i915_lp_ring_sync(dev);
- if (ret != 0) {
- DRM_ERROR("intel overlay: ring sync failed, hw likely wedged\n");
- overlay->hw_wedged = 1;
+ overlay->last_flip_req = i915_add_request(dev, NULL, 0);
+ if (overlay->last_flip_req == 0)
+ return -ENOMEM;
+
+ ret = i915_do_wait_request(dev, overlay->last_flip_req, 1);
+ if (ret != 0)
return ret;
- }
/* turn overlay off */
+ overlay->hw_wedged = SWITCH_OFF_STAGE_2;
+
BEGIN_LP_RING(6);
OUT_RING(MI_FLUSH);
OUT_RING(MI_NOOP);
OUT_RING(MI_NOOP);
ADVANCE_LP_RING();
- ret = i915_lp_ring_sync(dev);
- if (ret != 0) {
- DRM_ERROR("intel overlay: ring sync failed, hw likely wedged\n");
- overlay->hw_wedged = 1;
+ overlay->last_flip_req = i915_add_request(dev, NULL, 0);
+ if (overlay->last_flip_req == 0)
+ return -ENOMEM;
+
+ ret = i915_do_wait_request(dev, overlay->last_flip_req, 1);
+ if (ret != 0)
return ret;
- }
+ overlay->hw_wedged = 0;
+ overlay->last_flip_req = 0;
+ return ret;
+}
+
+static void intel_overlay_off_tail(struct intel_overlay *overlay)
+{
+ struct drm_gem_object *obj;
+
+ /* never have the overlay hw on without showing a frame */
+ BUG_ON(!overlay->vid_bo);
+ obj = overlay->vid_bo->obj;
+
+ i915_gem_object_unpin(obj);
+ drm_gem_object_unreference(obj);
+ overlay->vid_bo = NULL;
+
+ overlay->crtc->overlay = NULL;
+ overlay->crtc = NULL;
overlay->active = 0;
+}
- return ret;
+/* recover from an interruption due to a signal
+ * We have to be careful not to repeat work forever an make forward progess. */
+int intel_overlay_recover_from_interrupt(struct intel_overlay *overlay,
+ int interruptible)
+{
+ struct drm_device *dev = overlay->dev;
+ drm_i915_private_t *dev_priv = dev->dev_private;
+ struct drm_gem_object *obj;
+ u32 flip_addr;
+ int ret;
+ RING_LOCALS;
+
+ if (overlay->hw_wedged == HW_WEDGED)
+ return -EIO;
+
+ if (overlay->last_flip_req == 0) {
+ overlay->last_flip_req = i915_add_request(dev, NULL, 0);
+ if (overlay->last_flip_req == 0)
+ return -ENOMEM;
+ }
+
+ ret = i915_do_wait_request(dev, overlay->last_flip_req, interruptible);
+ if (ret != 0)
+ return ret;
+
+ switch (overlay->hw_wedged) {
+ case RELEASE_OLD_VID:
+ obj = overlay->old_vid_bo->obj;
+ i915_gem_object_unpin(obj);
+ drm_gem_object_unreference(obj);
+ overlay->old_vid_bo = NULL;
+ break;
+ case SWITCH_OFF_STAGE_1:
+ flip_addr = overlay->flip_addr;
+ flip_addr |= OFC_UPDATE;
+
+ overlay->hw_wedged = SWITCH_OFF_STAGE_2;
+
+ BEGIN_LP_RING(6);
+ OUT_RING(MI_FLUSH);
+ OUT_RING(MI_NOOP);
+ OUT_RING(MI_OVERLAY_FLIP | MI_OVERLAY_OFF);
+ OUT_RING(flip_addr);
+ OUT_RING(MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP);
+ OUT_RING(MI_NOOP);
+ ADVANCE_LP_RING();
+
+ overlay->last_flip_req = i915_add_request(dev, NULL, 0);
+ if (overlay->last_flip_req == 0)
+ return -ENOMEM;
+
+ ret = i915_do_wait_request(dev, overlay->last_flip_req,
+ interruptible);
+ if (ret != 0)
+ return ret;
+
+ case SWITCH_OFF_STAGE_2:
+ intel_overlay_off_tail(overlay);
+ break;
+ default:
+ BUG_ON(overlay->hw_wedged != NEEDS_WAIT_FOR_FLIP);
+ }
+
+ overlay->hw_wedged = 0;
+ overlay->last_flip_req = 0;
+ return 0;
}
/* Wait for pending overlay flip and release old frame.
int ret;
struct drm_gem_object *obj;
+ /* only wait if there is actually an old frame to release to
+ * guarantee forward progress */
+ if (!overlay->old_vid_bo)
+ return 0;
+
ret = intel_overlay_wait_flip(overlay);
if (ret != 0)
return ret;
- if (!overlay->old_vid_bo)
- return 0;
-
obj = overlay->old_vid_bo->obj;
i915_gem_object_unpin(obj);
drm_gem_object_unreference(obj);
BUG_ON(!mutex_is_locked(&dev->mode_config.mutex));
BUG_ON(!overlay);
- if (overlay->hw_wedged)
- return -EBUSY;
-
ret = intel_overlay_release_old_vid(overlay);
if (ret != 0)
return ret;
{
int ret;
struct overlay_registers *regs;
- struct drm_gem_object *obj;
struct drm_device *dev = overlay->dev;
BUG_ON(!mutex_is_locked(&dev->struct_mutex));
BUG_ON(!mutex_is_locked(&dev->mode_config.mutex));
+ if (overlay->hw_wedged) {
+ ret = intel_overlay_recover_from_interrupt(overlay, 1);
+ if (ret != 0)
+ return ret;
+ }
+
if (!overlay->active)
return 0;
- if (overlay->hw_wedged)
- return -EBUSY;
-
ret = intel_overlay_release_old_vid(overlay);
if (ret != 0)
return ret;
intel_overlay_unmap_regs_atomic(overlay);
ret = intel_overlay_off(overlay);
- /* never have the overlay hw on without showing a frame */
- BUG_ON(!overlay->vid_bo);
- obj = overlay->vid_bo->obj;
-
- i915_gem_object_unpin(obj);
- drm_gem_object_unreference(obj);
- overlay->vid_bo = NULL;
+ if (ret != 0)
+ return ret;
- overlay->crtc->overlay = NULL;
- overlay->crtc = NULL;
+ intel_overlay_off_tail(overlay);
return 0;
}
mutex_lock(&dev->mode_config.mutex);
mutex_lock(&dev->struct_mutex);
+ if (overlay->hw_wedged) {
+ ret = intel_overlay_recover_from_interrupt(overlay, 1);
+ if (ret != 0)
+ goto out_unlock;
+ }
+
if (overlay->crtc != crtc) {
struct drm_display_mode *mode = &crtc->base.mode;
ret = intel_overlay_switch_off(overlay);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff