[PATCH v2 6/8] drm/radeon: cope with foreign fences inside the reservation object
Maarten Lankhorst
maarten.lankhorst at canonical.com
Thu Sep 25 03:39:38 PDT 2014
Not the whole world is a radeon! :-)
Signed-off-by: Maarten Lankhorst <maarten.lankhorst at canonical.com>
---
Changes:
- Removed interruptible parameter, only 1 place has a use for it,
and it's the only place that can hit it.
- Fail faster in radeon_semaphore_sync_resv.
- Make the break on error in radeon_cs.c more explicit.
- Upgrade the unlikely() to a WARN_ON_ONCE() in radeon_fence_wait, with a comment explaining why.
diff --git a/drivers/gpu/drm/radeon/cik.c b/drivers/gpu/drm/radeon/cik.c
index 0d761f73a7fa..7bdf80c2603d 100644
--- a/drivers/gpu/drm/radeon/cik.c
+++ b/drivers/gpu/drm/radeon/cik.c
@@ -3993,7 +3993,7 @@ struct radeon_fence *cik_copy_cpdma(struct radeon_device *rdev,
return ERR_PTR(r);
}
- radeon_semaphore_sync_resv(sem, resv, false);
+ radeon_semaphore_sync_resv(rdev, sem, resv, false);
radeon_semaphore_sync_rings(rdev, sem, ring->idx);
for (i = 0; i < num_loops; i++) {
diff --git a/drivers/gpu/drm/radeon/cik_sdma.c b/drivers/gpu/drm/radeon/cik_sdma.c
index c01a6100c318..c473c9125295 100644
--- a/drivers/gpu/drm/radeon/cik_sdma.c
+++ b/drivers/gpu/drm/radeon/cik_sdma.c
@@ -571,7 +571,7 @@ struct radeon_fence *cik_copy_dma(struct radeon_device *rdev,
return ERR_PTR(r);
}
- radeon_semaphore_sync_resv(sem, resv, false);
+ radeon_semaphore_sync_resv(rdev, sem, resv, false);
radeon_semaphore_sync_rings(rdev, sem, ring->idx);
for (i = 0; i < num_loops; i++) {
diff --git a/drivers/gpu/drm/radeon/evergreen_dma.c b/drivers/gpu/drm/radeon/evergreen_dma.c
index 946f37d0b469..66bcfadeedd1 100644
--- a/drivers/gpu/drm/radeon/evergreen_dma.c
+++ b/drivers/gpu/drm/radeon/evergreen_dma.c
@@ -133,7 +133,7 @@ struct radeon_fence *evergreen_copy_dma(struct radeon_device *rdev,
return ERR_PTR(r);
}
- radeon_semaphore_sync_resv(sem, resv, false);
+ radeon_semaphore_sync_resv(rdev, sem, resv, false);
radeon_semaphore_sync_rings(rdev, sem, ring->idx);
for (i = 0; i < num_loops; i++) {
diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
index 25f367ac4637..f8eb519c3286 100644
--- a/drivers/gpu/drm/radeon/r600.c
+++ b/drivers/gpu/drm/radeon/r600.c
@@ -2912,7 +2912,7 @@ struct radeon_fence *r600_copy_cpdma(struct radeon_device *rdev,
return ERR_PTR(r);
}
- radeon_semaphore_sync_resv(sem, resv, false);
+ radeon_semaphore_sync_resv(rdev, sem, resv, false);
radeon_semaphore_sync_rings(rdev, sem, ring->idx);
radeon_ring_write(ring, PACKET3(PACKET3_SET_CONFIG_REG, 1));
diff --git a/drivers/gpu/drm/radeon/r600_dma.c b/drivers/gpu/drm/radeon/r600_dma.c
index fc54224ce87b..a49db830a47f 100644
--- a/drivers/gpu/drm/radeon/r600_dma.c
+++ b/drivers/gpu/drm/radeon/r600_dma.c
@@ -470,7 +470,7 @@ struct radeon_fence *r600_copy_dma(struct radeon_device *rdev,
return ERR_PTR(r);
}
- radeon_semaphore_sync_resv(sem, resv, false);
+ radeon_semaphore_sync_resv(rdev, sem, resv, false);
radeon_semaphore_sync_rings(rdev, sem, ring->idx);
for (i = 0; i < num_loops; i++) {
diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index 864457cd7c98..07aa961bf5ca 100644
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -589,9 +589,10 @@ bool radeon_semaphore_emit_wait(struct radeon_device *rdev, int ring,
struct radeon_semaphore *semaphore);
void radeon_semaphore_sync_fence(struct radeon_semaphore *semaphore,
struct radeon_fence *fence);
-void radeon_semaphore_sync_resv(struct radeon_semaphore *semaphore,
- struct reservation_object *resv,
- bool shared);
+int radeon_semaphore_sync_resv(struct radeon_device *rdev,
+ struct radeon_semaphore *semaphore,
+ struct reservation_object *resv,
+ bool shared);
int radeon_semaphore_sync_rings(struct radeon_device *rdev,
struct radeon_semaphore *semaphore,
int waiting_ring);
diff --git a/drivers/gpu/drm/radeon/radeon_cs.c b/drivers/gpu/drm/radeon/radeon_cs.c
index f662de41ba49..1c893447d7cd 100644
--- a/drivers/gpu/drm/radeon/radeon_cs.c
+++ b/drivers/gpu/drm/radeon/radeon_cs.c
@@ -249,9 +249,9 @@ static int radeon_cs_get_ring(struct radeon_cs_parser *p, u32 ring, s32 priority
return 0;
}
-static void radeon_cs_sync_rings(struct radeon_cs_parser *p)
+static int radeon_cs_sync_rings(struct radeon_cs_parser *p)
{
- int i;
+ int i, r = 0;
for (i = 0; i < p->nrelocs; i++) {
struct reservation_object *resv;
@@ -260,9 +260,13 @@ static void radeon_cs_sync_rings(struct radeon_cs_parser *p)
continue;
resv = p->relocs[i].robj->tbo.resv;
- radeon_semaphore_sync_resv(p->ib.semaphore, resv,
- p->relocs[i].tv.shared);
+ r = radeon_semaphore_sync_resv(p->rdev, p->ib.semaphore, resv,
+ p->relocs[i].tv.shared);
+
+ if (r)
+ break;
}
+ return r;
}
/* XXX: note that this is called from the legacy UMS CS ioctl as well */
@@ -472,13 +476,19 @@ static int radeon_cs_ib_chunk(struct radeon_device *rdev,
return r;
}
+ r = radeon_cs_sync_rings(parser);
+ if (r) {
+ if (r != -ERESTARTSYS)
+ DRM_ERROR("Failed to sync rings: %i\n", r);
+ return r;
+ }
+
if (parser->ring == R600_RING_TYPE_UVD_INDEX)
radeon_uvd_note_usage(rdev);
else if ((parser->ring == TN_RING_TYPE_VCE1_INDEX) ||
(parser->ring == TN_RING_TYPE_VCE2_INDEX))
radeon_vce_note_usage(rdev);
- radeon_cs_sync_rings(parser);
r = radeon_ib_schedule(rdev, &parser->ib, NULL, true);
if (r) {
DRM_ERROR("Failed to schedule IB !\n");
@@ -565,7 +575,13 @@ static int radeon_cs_ib_vm_chunk(struct radeon_device *rdev,
if (r) {
goto out;
}
- radeon_cs_sync_rings(parser);
+
+ r = radeon_cs_sync_rings(parser);
+ if (r) {
+ if (r != -ERESTARTSYS)
+ DRM_ERROR("Failed to sync rings: %i\n", r);
+ goto out;
+ }
radeon_semaphore_sync_fence(parser->ib.semaphore, vm->fence);
if ((rdev->family >= CHIP_TAHITI) &&
diff --git a/drivers/gpu/drm/radeon/radeon_fence.c b/drivers/gpu/drm/radeon/radeon_fence.c
index af9f2d6bd7d0..995167025282 100644
--- a/drivers/gpu/drm/radeon/radeon_fence.c
+++ b/drivers/gpu/drm/radeon/radeon_fence.c
@@ -541,6 +541,15 @@ int radeon_fence_wait(struct radeon_fence *fence, bool intr)
uint64_t seq[RADEON_NUM_RINGS] = {};
long r;
+ /*
+ * This function should not be called on !radeon fences.
+ * If this is the case, it would mean this function can
+ * also be called on radeon fences belonging to another card.
+ * exclusive_lock is not held in that case.
+ */
+ if (WARN_ON_ONCE(!to_radeon_fence(&fence->base)))
+ return fence_wait(&fence->base, intr);
+
seq[fence->ring] = fence->seq;
r = radeon_fence_wait_seq_timeout(fence->rdev, seq, intr, MAX_SCHEDULE_TIMEOUT);
if (r < 0) {
diff --git a/drivers/gpu/drm/radeon/radeon_semaphore.c b/drivers/gpu/drm/radeon/radeon_semaphore.c
index 4d4b0773638a..6deb08f045b7 100644
--- a/drivers/gpu/drm/radeon/radeon_semaphore.c
+++ b/drivers/gpu/drm/radeon/radeon_semaphore.c
@@ -124,27 +124,42 @@ void radeon_semaphore_sync_fence(struct radeon_semaphore *semaphore,
*
* Sync to the fence using this semaphore object
*/
-void radeon_semaphore_sync_resv(struct radeon_semaphore *sema,
- struct reservation_object *resv,
- bool shared)
+int radeon_semaphore_sync_resv(struct radeon_device *rdev,
+ struct radeon_semaphore *sema,
+ struct reservation_object *resv,
+ bool shared)
{
struct reservation_object_list *flist;
struct fence *f;
+ struct radeon_fence *fence;
unsigned i;
+ int r = 0;
/* always sync to the exclusive fence */
f = reservation_object_get_excl(resv);
- radeon_semaphore_sync_fence(sema, (struct radeon_fence*)f);
+ fence = f ? to_radeon_fence(f) : NULL;
+ if (fence && fence->rdev == rdev)
+ radeon_semaphore_sync_fence(sema, fence);
+ else if (f)
+ r = fence_wait(f, true);
flist = reservation_object_get_list(resv);
- if (shared || !flist)
- return;
+ if (shared || !flist || r)
+ return r;
for (i = 0; i < flist->shared_count; ++i) {
f = rcu_dereference_protected(flist->shared[i],
reservation_object_held(resv));
- radeon_semaphore_sync_fence(sema, (struct radeon_fence*)f);
+ fence = to_radeon_fence(f);
+ if (fence && fence->rdev == rdev)
+ radeon_semaphore_sync_fence(sema, fence);
+ else
+ r = fence_wait(f, true);
+
+ if (r)
+ break;
}
+ return r;
}
/**
diff --git a/drivers/gpu/drm/radeon/radeon_vm.c b/drivers/gpu/drm/radeon/radeon_vm.c
index ce870959dff8..8af1a94e7448 100644
--- a/drivers/gpu/drm/radeon/radeon_vm.c
+++ b/drivers/gpu/drm/radeon/radeon_vm.c
@@ -698,7 +698,7 @@ int radeon_vm_update_page_directory(struct radeon_device *rdev,
if (ib.length_dw != 0) {
radeon_asic_vm_pad_ib(rdev, &ib);
- radeon_semaphore_sync_resv(ib.semaphore, pd->tbo.resv, false);
+ radeon_semaphore_sync_resv(rdev, ib.semaphore, pd->tbo.resv, false);
radeon_semaphore_sync_fence(ib.semaphore, vm->last_id_use);
WARN_ON(ib.length_dw > ndw);
r = radeon_ib_schedule(rdev, &ib, NULL, false);
@@ -825,7 +825,7 @@ static void radeon_vm_update_ptes(struct radeon_device *rdev,
unsigned nptes;
uint64_t pte;
- radeon_semaphore_sync_resv(ib->semaphore, pt->tbo.resv, false);
+ radeon_semaphore_sync_resv(rdev, ib->semaphore, pt->tbo.resv, false);
if ((addr & ~mask) == (end & ~mask))
nptes = end - addr;
diff --git a/drivers/gpu/drm/radeon/rv770_dma.c b/drivers/gpu/drm/radeon/rv770_dma.c
index c112764adfdf..7f34bad2e724 100644
--- a/drivers/gpu/drm/radeon/rv770_dma.c
+++ b/drivers/gpu/drm/radeon/rv770_dma.c
@@ -67,7 +67,7 @@ struct radeon_fence *rv770_copy_dma(struct radeon_device *rdev,
return ERR_PTR(r);
}
- radeon_semaphore_sync_resv(sem, resv, false);
+ radeon_semaphore_sync_resv(rdev, sem, resv, false);
radeon_semaphore_sync_rings(rdev, sem, ring->idx);
for (i = 0; i < num_loops; i++) {
diff --git a/drivers/gpu/drm/radeon/si_dma.c b/drivers/gpu/drm/radeon/si_dma.c
index 9b0dfbc913f3..b58f12b762d7 100644
--- a/drivers/gpu/drm/radeon/si_dma.c
+++ b/drivers/gpu/drm/radeon/si_dma.c
@@ -252,7 +252,7 @@ struct radeon_fence *si_copy_dma(struct radeon_device *rdev,
return ERR_PTR(r);
}
- radeon_semaphore_sync_resv(sem, resv, false);
+ radeon_semaphore_sync_resv(rdev, sem, resv, false);
radeon_semaphore_sync_rings(rdev, sem, ring->idx);
for (i = 0; i < num_loops; i++) {
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