[Intel-gfx] [PATCH 5/5] drm/i915: Wait for object idle without locks in atomic_commit.
Maarten Lankhorst
maarten.lankhorst at linux.intel.com
Wed Sep 23 04:27:12 PDT 2015
Make pinning and waiting a separate step, and wait for object idle
without struct_mutex held.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
---
drivers/gpu/drm/i915/i915_drv.h | 2 -
drivers/gpu/drm/i915/i915_gem.c | 6 ---
drivers/gpu/drm/i915/intel_atomic_plane.c | 2 +
drivers/gpu/drm/i915/intel_display.c | 86 ++++++++++++++++++++++++++-----
drivers/gpu/drm/i915/intel_drv.h | 7 +--
drivers/gpu/drm/i915/intel_fbdev.c | 2 +-
drivers/gpu/drm/i915/intel_overlay.c | 6 ++-
7 files changed, 84 insertions(+), 27 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 3bf8a9b771d0..ec72fd457499 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -2982,8 +2982,6 @@ i915_gem_object_set_to_cpu_domain(struct drm_i915_gem_object *obj, bool write);
int __must_check
i915_gem_object_pin_to_display_plane(struct drm_i915_gem_object *obj,
u32 alignment,
- struct intel_engine_cs *pipelined,
- struct drm_i915_gem_request **pipelined_request,
const struct i915_ggtt_view *view);
void i915_gem_object_unpin_from_display_plane(struct drm_i915_gem_object *obj,
const struct i915_ggtt_view *view);
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 46f0e83ee6ee..ab02182c47a5 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -3782,17 +3782,11 @@ unlock:
int
i915_gem_object_pin_to_display_plane(struct drm_i915_gem_object *obj,
u32 alignment,
- struct intel_engine_cs *pipelined,
- struct drm_i915_gem_request **pipelined_request,
const struct i915_ggtt_view *view)
{
u32 old_read_domains, old_write_domain;
int ret;
- ret = i915_gem_object_sync(obj, pipelined, pipelined_request);
- if (ret)
- return ret;
-
/* Mark the pin_display early so that we account for the
* display coherency whilst setting up the cache domains.
*/
diff --git a/drivers/gpu/drm/i915/intel_atomic_plane.c b/drivers/gpu/drm/i915/intel_atomic_plane.c
index a11980696595..c6bb0fc1edfb 100644
--- a/drivers/gpu/drm/i915/intel_atomic_plane.c
+++ b/drivers/gpu/drm/i915/intel_atomic_plane.c
@@ -84,6 +84,7 @@ intel_plane_duplicate_state(struct drm_plane *plane)
state = &intel_state->base;
__drm_atomic_helper_plane_duplicate_state(plane, state);
+ intel_state->wait_req = NULL;
return state;
}
@@ -100,6 +101,7 @@ void
intel_plane_destroy_state(struct drm_plane *plane,
struct drm_plane_state *state)
{
+ WARN_ON(state && to_intel_plane_state(state)->wait_req);
drm_atomic_helper_plane_destroy_state(plane, state);
}
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 2f046134cc9a..d817c44ee428 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -2291,9 +2291,7 @@ static unsigned int intel_linear_alignment(struct drm_i915_private *dev_priv)
int
intel_pin_and_fence_fb_obj(struct drm_plane *plane,
struct drm_framebuffer *fb,
- const struct drm_plane_state *plane_state,
- struct intel_engine_cs *pipelined,
- struct drm_i915_gem_request **pipelined_request)
+ const struct drm_plane_state *plane_state)
{
struct drm_device *dev = fb->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
@@ -2349,8 +2347,8 @@ intel_pin_and_fence_fb_obj(struct drm_plane *plane,
*/
intel_runtime_pm_get(dev_priv);
- ret = i915_gem_object_pin_to_display_plane(obj, alignment, pipelined,
- pipelined_request, &view);
+ ret = i915_gem_object_pin_to_display_plane(obj, alignment,
+ &view);
if (ret)
goto err_pm;
@@ -11357,9 +11355,14 @@ static int intel_crtc_page_flip(struct drm_crtc *crtc,
* synchronisation, so all we want here is to pin the framebuffer
* into the display plane and skip any waits.
*/
+ if (!mmio_flip) {
+ ret = i915_gem_object_sync(obj, ring, &request);
+ if (ret)
+ goto cleanup_pending;
+ }
+
ret = intel_pin_and_fence_fb_obj(crtc->primary, fb,
- crtc->primary->state,
- mmio_flip ? i915_gem_request_get_ring(obj->last_write_req) : ring, &request);
+ crtc->primary->state);
if (ret)
goto cleanup_pending;
@@ -12993,7 +12996,10 @@ static int intel_atomic_prepare_commit(struct drm_device *dev,
struct drm_atomic_state *state,
bool async)
{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_plane_state *plane_state;
struct drm_crtc_state *crtc_state;
+ struct drm_plane *plane;
struct drm_crtc *crtc;
int i, ret;
@@ -13006,6 +13012,9 @@ static int intel_atomic_prepare_commit(struct drm_device *dev,
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);
}
ret = i915_mutex_lock_interruptible(dev);
@@ -13013,6 +13022,37 @@ static int intel_atomic_prepare_commit(struct drm_device *dev,
return ret;
ret = drm_atomic_helper_prepare_planes(dev, state);
+ if (!ret && !async) {
+ u32 reset_counter;
+
+ reset_counter = atomic_read(&dev_priv->gpu_error.reset_counter);
+ mutex_unlock(&dev->struct_mutex);
+
+ for_each_plane_in_state(state, plane, plane_state, i) {
+ struct intel_plane_state *intel_plane_state =
+ to_intel_plane_state(plane_state);
+
+ if (!intel_plane_state->wait_req)
+ continue;
+
+ ret = __i915_wait_request(intel_plane_state->wait_req,
+ reset_counter, true,
+ NULL, NULL);
+
+ /* Swallow -EIO errors to allow updates during hw lockup. */
+ if (ret == -EIO)
+ ret = 0;
+
+ if (ret)
+ break;
+ }
+
+ if (!ret)
+ return 0;
+
+ mutex_lock(&dev->struct_mutex);
+ drm_atomic_helper_cleanup_planes(dev, state);
+ }
mutex_unlock(&dev->struct_mutex);
return ret;
@@ -13039,15 +13079,17 @@ static int intel_atomic_commit(struct drm_device *dev,
bool async)
{
struct drm_i915_private *dev_priv = dev->dev_private;
- struct drm_crtc *crtc;
struct drm_crtc_state *crtc_state;
+ struct drm_crtc *crtc;
int ret = 0;
int i;
bool any_ms = false;
ret = intel_atomic_prepare_commit(dev, state, async);
- if (ret)
+ if (ret) {
+ DRM_DEBUG_ATOMIC("Preparing state failed with %i\n", ret);
return ret;
+ }
drm_atomic_helper_swap_state(dev, state);
@@ -13318,7 +13360,8 @@ intel_prepare_plane_fb(struct drm_plane *plane,
* This should only fail upon a hung GPU, in which case we
* can safely continue.
*/
- if (needs_modeset(crtc_state))
+ if (needs_modeset(crtc_state) &&
+ to_intel_plane_state(plane->state)->visible)
ret = i915_gem_object_wait_rendering(old_obj, true);
/* Swallow -EIO errors to allow updates during hw lockup. */
@@ -13335,11 +13378,21 @@ intel_prepare_plane_fb(struct drm_plane *plane,
if (ret)
DRM_DEBUG_KMS("failed to attach phys object\n");
} else {
- ret = intel_pin_and_fence_fb_obj(plane, fb, new_state, NULL, NULL);
+ ret = intel_pin_and_fence_fb_obj(plane, fb, new_state);
}
- if (ret == 0)
+ if (ret == 0) {
+ if (obj && obj->last_write_req &&
+ !i915_gem_request_completed(obj->last_write_req, true)) {
+ struct intel_plane_state *plane_state =
+ to_intel_plane_state(new_state);
+
+ i915_gem_request_assign(&plane_state->wait_req,
+ obj->last_write_req);
+ }
+
i915_gem_track_fb(old_obj, obj, intel_plane->frontbuffer_bit);
+ }
return ret;
}
@@ -13357,9 +13410,12 @@ intel_cleanup_plane_fb(struct drm_plane *plane,
{
struct drm_device *dev = plane->dev;
struct intel_plane *intel_plane = to_intel_plane(plane);
+ struct intel_plane_state *old_intel_state;
struct drm_i915_gem_object *old_obj = intel_fb_obj(old_state->fb);
struct drm_i915_gem_object *obj = intel_fb_obj(plane->state->fb);
+ old_intel_state = to_intel_plane_state(old_state);
+
if (!obj && !old_obj)
return;
@@ -13371,6 +13427,9 @@ intel_cleanup_plane_fb(struct drm_plane *plane,
if ((old_obj && (old_obj->frontbuffer_bits & intel_plane->frontbuffer_bit)) ||
(obj && !(obj->frontbuffer_bits & intel_plane->frontbuffer_bit)))
i915_gem_track_fb(old_obj, obj, intel_plane->frontbuffer_bit);
+
+ i915_gem_request_assign(&old_intel_state->wait_req, NULL);
+
}
int
@@ -15348,8 +15407,7 @@ void intel_modeset_gem_init(struct drm_device *dev)
mutex_lock(&dev->struct_mutex);
ret = intel_pin_and_fence_fb_obj(c->primary,
c->primary->fb,
- c->primary->state,
- NULL, NULL);
+ c->primary->state);
mutex_unlock(&dev->struct_mutex);
if (ret) {
DRM_ERROR("failed to pin boot fb on pipe %d\n",
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index cfdb0f2714cd..852a0d192f82 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -270,6 +270,9 @@ struct intel_plane_state {
int scaler_id;
struct drm_intel_sprite_colorkey ckey;
+
+ /* async flip related structures */
+ struct drm_i915_gem_request *wait_req;
};
struct intel_initial_plane_config {
@@ -1055,9 +1058,7 @@ void intel_release_load_detect_pipe(struct drm_connector *connector,
struct drm_modeset_acquire_ctx *ctx);
int intel_pin_and_fence_fb_obj(struct drm_plane *plane,
struct drm_framebuffer *fb,
- const struct drm_plane_state *plane_state,
- struct intel_engine_cs *pipelined,
- struct drm_i915_gem_request **pipelined_request);
+ const struct drm_plane_state *plane_state);
struct drm_framebuffer *
__intel_framebuffer_create(struct drm_device *dev,
struct drm_mode_fb_cmd2 *mode_cmd,
diff --git a/drivers/gpu/drm/i915/intel_fbdev.c b/drivers/gpu/drm/i915/intel_fbdev.c
index 65329127f0b9..51afee61ba7e 100644
--- a/drivers/gpu/drm/i915/intel_fbdev.c
+++ b/drivers/gpu/drm/i915/intel_fbdev.c
@@ -155,7 +155,7 @@ static int intelfb_alloc(struct drm_fb_helper *helper,
}
/* Flush everything out, we'll be doing GTT only from now on */
- ret = intel_pin_and_fence_fb_obj(NULL, fb, NULL, NULL, NULL);
+ ret = intel_pin_and_fence_fb_obj(NULL, fb, NULL);
if (ret) {
DRM_ERROR("failed to pin obj: %d\n", ret);
goto out_fb;
diff --git a/drivers/gpu/drm/i915/intel_overlay.c b/drivers/gpu/drm/i915/intel_overlay.c
index 444542696a2c..1b18cc6bdbd6 100644
--- a/drivers/gpu/drm/i915/intel_overlay.c
+++ b/drivers/gpu/drm/i915/intel_overlay.c
@@ -749,7 +749,11 @@ static int intel_overlay_do_put_image(struct intel_overlay *overlay,
if (ret != 0)
return ret;
- ret = i915_gem_object_pin_to_display_plane(new_bo, 0, NULL, NULL,
+ ret = i915_gem_object_wait_rendering(new_bo, true);
+ if (ret)
+ return ret;
+
+ ret = i915_gem_object_pin_to_display_plane(new_bo, 0,
&i915_ggtt_view_normal);
if (ret != 0)
return ret;
--
2.1.0
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