Op 25-09-14 om 12:39 schreef Maarten Lankhorst:
> 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.
Ping, can you review?
> 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++) {
>
