drm/i915: Serialise presentation with imported dmabufs
obj->base.dma_buf represents a dma-buf exported from this object (for
use by others). On the contrary, obj->base.import_attach represents the
source dma-buf that was used to create this object (if any). When
serialising with third parties, we need to wait on their rendering via
the import attachment as well as their rendering on our exported
dma-buf.
v2: Wait on both import and export.
v3: Rebase
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Alex Goins <agoins@nvidia.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Tested-by: Alex Goins <agoins@nvidia.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1466148527-10891-1-git-send-email-chris@chris-wilson.co.uk
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 9a7f0bb..8c6f4e2 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -36,6 +36,7 @@
#include "intel_drv.h"
#include <drm/i915_drm.h>
#include "i915_drv.h"
+#include "i915_gem_dmabuf.h"
#include "intel_dsi.h"
#include "i915_trace.h"
#include <drm/drm_atomic.h>
@@ -46,7 +47,6 @@
#include <drm/drm_rect.h>
#include <linux/dma_remapping.h>
#include <linux/reservation.h>
-#include <linux/dma-buf.h>
static bool is_mmio_work(struct intel_flip_work *work)
{
@@ -11429,6 +11429,8 @@
static bool use_mmio_flip(struct intel_engine_cs *engine,
struct drm_i915_gem_object *obj)
{
+ struct reservation_object *resv;
+
/*
* This is not being used for older platforms, because
* non-availability of flip done interrupt forces us to use
@@ -11449,12 +11451,12 @@
return true;
else if (i915.enable_execlists)
return true;
- else if (obj->base.dma_buf &&
- !reservation_object_test_signaled_rcu(obj->base.dma_buf->resv,
- false))
+
+ resv = i915_gem_object_get_dmabuf_resv(obj);
+ if (resv && !reservation_object_test_signaled_rcu(resv, false))
return true;
- else
- return engine != i915_gem_request_get_engine(obj->last_write_req);
+
+ return engine != i915_gem_request_get_engine(obj->last_write_req);
}
static void skl_do_mmio_flip(struct intel_crtc *intel_crtc,
@@ -11543,6 +11545,7 @@
struct intel_framebuffer *intel_fb =
to_intel_framebuffer(crtc->base.primary->fb);
struct drm_i915_gem_object *obj = intel_fb->obj;
+ struct reservation_object *resv;
if (work->flip_queued_req)
WARN_ON(__i915_wait_request(work->flip_queued_req,
@@ -11550,9 +11553,9 @@
&dev_priv->rps.mmioflips));
/* For framebuffer backed by dmabuf, wait for fence */
- if (obj->base.dma_buf)
- WARN_ON(reservation_object_wait_timeout_rcu(obj->base.dma_buf->resv,
- false, false,
+ resv = i915_gem_object_get_dmabuf_resv(obj);
+ if (resv)
+ WARN_ON(reservation_object_wait_timeout_rcu(resv, false, false,
MAX_SCHEDULE_TIMEOUT) < 0);
intel_pipe_update_start(crtc);
@@ -14032,6 +14035,7 @@
struct drm_framebuffer *fb = new_state->fb;
struct drm_i915_gem_object *obj = intel_fb_obj(fb);
struct drm_i915_gem_object *old_obj = intel_fb_obj(plane->state->fb);
+ struct reservation_object *resv;
int ret = 0;
if (!obj && !old_obj)
@@ -14061,12 +14065,15 @@
}
}
+ if (!obj)
+ return 0;
+
/* For framebuffer backed by dmabuf, wait for fence */
- if (obj && obj->base.dma_buf) {
+ resv = i915_gem_object_get_dmabuf_resv(obj);
+ if (resv) {
long lret;
- lret = reservation_object_wait_timeout_rcu(obj->base.dma_buf->resv,
- false, true,
+ lret = reservation_object_wait_timeout_rcu(resv, false, true,
MAX_SCHEDULE_TIMEOUT);
if (lret == -ERESTARTSYS)
return lret;
@@ -14074,9 +14081,7 @@
WARN(lret < 0, "waiting returns %li\n", lret);
}
- if (!obj) {
- ret = 0;
- } else if (plane->type == DRM_PLANE_TYPE_CURSOR &&
+ if (plane->type == DRM_PLANE_TYPE_CURSOR &&
INTEL_INFO(dev)->cursor_needs_physical) {
int align = IS_I830(dev) ? 16 * 1024 : 256;
ret = i915_gem_object_attach_phys(obj, align);
@@ -14086,7 +14091,7 @@
ret = intel_pin_and_fence_fb_obj(fb, new_state->rotation);
}
- if (ret == 0 && obj) {
+ if (ret == 0) {
struct intel_plane_state *plane_state =
to_intel_plane_state(new_state);