From b303cf9542b016e2af3b9d17255a7f93cd790ef5 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Thu, 12 Aug 2010 14:03:48 +0100 Subject: [PATCH] drm/i915/overlay: Use a continuation hook to finish work after a flip. Slightly easier to follow than the state machine and now possible as the control structure is opaque and hw_wedged is no longer interferred with. Signed-off-by: Chris Wilson Reviewed-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_overlay.c | 110 +++++++++++---------------- 1 file changed, 44 insertions(+), 66 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_overlay.c b/drivers/gpu/drm/i915/intel_overlay.c index 0a7d3e688060..bb2256f9dbc8 100644 --- a/drivers/gpu/drm/i915/intel_overlay.c +++ b/drivers/gpu/drm/i915/intel_overlay.c @@ -186,11 +186,7 @@ struct intel_overlay { struct drm_i915_gem_object *reg_bo; /* flip handling */ uint32_t last_flip_req; - int hw_wedged; -#define HW_WEDGED 1 -#define NEEDS_WAIT_FOR_FLIP 2 -#define RELEASE_OLD_VID 3 -#define SWITCH_OFF 4 + void (*flip_tail)(struct intel_overlay *); }; static struct overlay_registers * @@ -243,25 +239,25 @@ static void intel_overlay_unmap_regs(struct intel_overlay *overlay, static int intel_overlay_do_wait_request(struct intel_overlay *overlay, struct drm_i915_gem_request *request, bool interruptible, - int stage) + void (*tail)(struct intel_overlay *)) { struct drm_device *dev = overlay->dev; drm_i915_private_t *dev_priv = dev->dev_private; int ret; + BUG_ON(overlay->last_flip_req); overlay->last_flip_req = i915_add_request(dev, NULL, request, &dev_priv->render_ring); if (overlay->last_flip_req == 0) return -ENOMEM; - overlay->hw_wedged = stage; + overlay->flip_tail = tail; ret = i915_do_wait_request(dev, overlay->last_flip_req, true, &dev_priv->render_ring); if (ret) return ret; - overlay->hw_wedged = 0; overlay->last_flip_req = 0; return 0; } @@ -344,8 +340,7 @@ static int intel_overlay_on(struct intel_overlay *overlay) OUT_RING(MI_NOOP); ADVANCE_LP_RING(); - ret = intel_overlay_do_wait_request(overlay, request, true, - NEEDS_WAIT_FOR_FLIP); + ret = intel_overlay_do_wait_request(overlay, request, true, NULL); out: if (pipe_a_quirk) i830_deactivate_pipe_a(dev); @@ -387,6 +382,33 @@ static int intel_overlay_continue(struct intel_overlay *overlay, return 0; } +static void intel_overlay_release_old_vid_tail(struct intel_overlay *overlay) +{ + struct drm_gem_object *obj = &overlay->old_vid_bo->base; + + i915_gem_object_unpin(obj); + drm_gem_object_unreference(obj); + + overlay->old_vid_bo = NULL; +} + +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->base; + + i915_gem_object_unpin(obj); + drm_gem_object_unreference(obj); + overlay->vid_bo = NULL; + + overlay->crtc->overlay = NULL; + overlay->crtc = NULL; + overlay->active = 0; +} + /* overlay needs to be disabled in OCMD reg */ static int intel_overlay_off(struct intel_overlay *overlay, bool interruptible) @@ -419,34 +441,7 @@ static int intel_overlay_off(struct intel_overlay *overlay, ADVANCE_LP_RING(); return intel_overlay_do_wait_request(overlay, request, interruptible, - SWITCH_OFF); -} - -static void intel_overlay_release_old_vid_tail(struct intel_overlay *overlay) -{ - struct drm_gem_object *obj = &overlay->old_vid_bo->base; - - i915_gem_object_unpin(obj); - drm_gem_object_unreference(obj); - - overlay->old_vid_bo = NULL; -} - -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->base; - - i915_gem_object_unpin(obj); - drm_gem_object_unreference(obj); - overlay->vid_bo = NULL; - - overlay->crtc->overlay = NULL; - overlay->crtc = NULL; - overlay->active = 0; + intel_overlay_off_tail); } /* recover from an interruption due to a signal @@ -458,28 +453,17 @@ static int intel_overlay_recover_from_interrupt(struct intel_overlay *overlay, drm_i915_private_t *dev_priv = dev->dev_private; int ret; - if (overlay->hw_wedged == HW_WEDGED) - return -EIO; + if (overlay->last_flip_req == 0) + return 0; ret = i915_do_wait_request(dev, overlay->last_flip_req, interruptible, &dev_priv->render_ring); if (ret) return ret; - switch (overlay->hw_wedged) { - case RELEASE_OLD_VID: - intel_overlay_release_old_vid_tail(overlay); - break; + if (overlay->flip_tail) + overlay->flip_tail(overlay); - case SWITCH_OFF: - 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; } @@ -514,7 +498,7 @@ static int intel_overlay_release_old_vid(struct intel_overlay *overlay) ADVANCE_LP_RING(); ret = intel_overlay_do_wait_request(overlay, request, true, - RELEASE_OLD_VID); + intel_overlay_release_old_vid_tail); if (ret) return ret; } @@ -889,12 +873,9 @@ int intel_overlay_switch_off(struct intel_overlay *overlay, 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, - interruptible); - if (ret != 0) - return ret; - } + ret = intel_overlay_recover_from_interrupt(overlay, interruptible); + if (ret != 0) + return ret; if (!overlay->active) return 0; @@ -912,7 +893,6 @@ int intel_overlay_switch_off(struct intel_overlay *overlay, return ret; intel_overlay_off_tail(overlay); - return 0; } @@ -1153,11 +1133,9 @@ int intel_overlay_put_image(struct drm_device *dev, void *data, 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; - } + ret = intel_overlay_recover_from_interrupt(overlay, true); + if (ret != 0) + goto out_unlock; if (overlay->crtc != crtc) { struct drm_display_mode *mode = &crtc->base.mode; -- 2.34.1