#include "amdgpu.h"
#include "amdgpu_trace.h"
+struct amdgpu_sync_entry {
+ struct hlist_node node;
+ struct fence *fence;
+};
+
/**
* amdgpu_sync_create - zero init sync object
*
for (i = 0; i < AMDGPU_MAX_RINGS; ++i)
sync->sync_to[i] = NULL;
+ hash_init(sync->fences);
sync->last_vm_update = NULL;
}
+static bool amdgpu_sync_same_dev(struct amdgpu_device *adev, struct fence *f)
+{
+ struct amdgpu_fence *a_fence = to_amdgpu_fence(f);
+ struct amd_sched_fence *s_fence = to_amd_sched_fence(f);
+
+ if (a_fence)
+ return a_fence->ring->adev == adev;
+
+ if (s_fence) {
+ struct amdgpu_ring *ring;
+
+ ring = container_of(s_fence->sched, struct amdgpu_ring, sched);
+ return ring->adev == adev;
+ }
+
+ return false;
+}
+
+static bool amdgpu_sync_test_owner(struct fence *f, void *owner)
+{
+ struct amdgpu_fence *a_fence = to_amdgpu_fence(f);
+ struct amd_sched_fence *s_fence = to_amd_sched_fence(f);
+ if (s_fence)
+ return s_fence->owner == owner;
+ if (a_fence)
+ return a_fence->owner == owner;
+ return false;
+}
+
/**
* amdgpu_sync_fence - remember to sync to this fence
*
int amdgpu_sync_fence(struct amdgpu_device *adev, struct amdgpu_sync *sync,
struct fence *f)
{
+ struct amdgpu_sync_entry *e;
struct amdgpu_fence *fence;
struct amdgpu_fence *other;
+ struct fence *tmp, *later;
if (!f)
return 0;
+ if (amdgpu_sync_same_dev(adev, f) &&
+ amdgpu_sync_test_owner(f, AMDGPU_FENCE_OWNER_VM)) {
+ if (sync->last_vm_update) {
+ tmp = sync->last_vm_update;
+ BUG_ON(f->context != tmp->context);
+ later = (f->seqno - tmp->seqno <= INT_MAX) ? f : tmp;
+ sync->last_vm_update = fence_get(later);
+ fence_put(tmp);
+ } else
+ sync->last_vm_update = fence_get(f);
+ }
+
fence = to_amdgpu_fence(f);
- if (!fence || fence->ring->adev != adev)
- return fence_wait(f, true);
+ if (!fence || fence->ring->adev != adev) {
+ hash_for_each_possible(sync->fences, e, node, f->context) {
+ struct fence *new;
+ if (unlikely(e->fence->context != f->context))
+ continue;
+ new = fence_get(fence_later(e->fence, f));
+ if (new) {
+ fence_put(e->fence);
+ e->fence = new;
+ }
+ return 0;
+ }
+
+ e = kmalloc(sizeof(struct amdgpu_sync_entry), GFP_KERNEL);
+ if (!e)
+ return -ENOMEM;
+
+ hash_add(sync->fences, &e->node, f->context);
+ e->fence = fence_get(f);
+ return 0;
+ }
other = sync->sync_to[fence->ring->idx];
sync->sync_to[fence->ring->idx] = amdgpu_fence_ref(
amdgpu_fence_later(fence, other));
amdgpu_fence_unref(&other);
- if (fence->owner == AMDGPU_FENCE_OWNER_VM) {
- other = sync->last_vm_update;
- sync->last_vm_update = amdgpu_fence_ref(
- amdgpu_fence_later(fence, other));
- amdgpu_fence_unref(&other);
- }
-
return 0;
}
+static void *amdgpu_sync_get_owner(struct fence *f)
+{
+ struct amdgpu_fence *a_fence = to_amdgpu_fence(f);
+ struct amd_sched_fence *s_fence = to_amd_sched_fence(f);
+
+ if (s_fence)
+ return s_fence->owner;
+ else if (a_fence)
+ return a_fence->owner;
+ return AMDGPU_FENCE_OWNER_UNDEFINED;
+}
+
/**
* amdgpu_sync_resv - use the semaphores to sync to a reservation object
*
{
struct reservation_object_list *flist;
struct fence *f;
- struct amdgpu_fence *fence;
+ void *fence_owner;
unsigned i;
int r = 0;
for (i = 0; i < flist->shared_count; ++i) {
f = rcu_dereference_protected(flist->shared[i],
reservation_object_held(resv));
- fence = f ? to_amdgpu_fence(f) : NULL;
- if (fence && fence->ring->adev == adev) {
+ if (amdgpu_sync_same_dev(adev, f)) {
/* VM updates are only interesting
* for other VM updates and moves.
*/
+ fence_owner = amdgpu_sync_get_owner(f);
if ((owner != AMDGPU_FENCE_OWNER_MOVE) &&
- (fence->owner != AMDGPU_FENCE_OWNER_MOVE) &&
+ (fence_owner != AMDGPU_FENCE_OWNER_MOVE) &&
((owner == AMDGPU_FENCE_OWNER_VM) !=
- (fence->owner == AMDGPU_FENCE_OWNER_VM)))
+ (fence_owner == AMDGPU_FENCE_OWNER_VM)))
continue;
/* Ignore fence from the same owner as
* long as it isn't undefined.
*/
if (owner != AMDGPU_FENCE_OWNER_UNDEFINED &&
- fence->owner == owner)
+ fence_owner == owner)
continue;
}
return r;
}
+struct fence *amdgpu_sync_get_fence(struct amdgpu_sync *sync)
+{
+ struct amdgpu_sync_entry *e;
+ struct hlist_node *tmp;
+ struct fence *f;
+ int i;
+
+ hash_for_each_safe(sync->fences, i, tmp, e, node) {
+
+ f = e->fence;
+
+ hash_del(&e->node);
+ kfree(e);
+
+ if (!fence_is_signaled(f))
+ return f;
+
+ fence_put(f);
+ }
+ return NULL;
+}
+
+int amdgpu_sync_wait(struct amdgpu_sync *sync)
+{
+ struct amdgpu_sync_entry *e;
+ struct hlist_node *tmp;
+ int i, r;
+
+ hash_for_each_safe(sync->fences, i, tmp, e, node) {
+ r = fence_wait(e->fence, false);
+ if (r)
+ return r;
+
+ hash_del(&e->node);
+ fence_put(e->fence);
+ kfree(e);
+ }
+
+ if (amdgpu_enable_semaphores)
+ return 0;
+
+ for (i = 0; i < AMDGPU_MAX_RINGS; ++i) {
+ struct amdgpu_fence *fence = sync->sync_to[i];
+ if (!fence)
+ continue;
+
+ r = fence_wait(&fence->base, false);
+ if (r)
+ return r;
+ }
+
+ return 0;
+}
+
/**
* amdgpu_sync_rings - sync ring to all registered fences
*
return -EINVAL;
}
- if (amdgpu_enable_scheduler || (count >= AMDGPU_NUM_SYNCS)) {
+ if (amdgpu_enable_scheduler || !amdgpu_enable_semaphores ||
+ (count >= AMDGPU_NUM_SYNCS)) {
/* not enough room, wait manually */
r = fence_wait(&fence->base, false);
if (r)
*/
void amdgpu_sync_free(struct amdgpu_device *adev,
struct amdgpu_sync *sync,
- struct amdgpu_fence *fence)
+ struct fence *fence)
{
+ struct amdgpu_sync_entry *e;
+ struct hlist_node *tmp;
unsigned i;
+ hash_for_each_safe(sync->fences, i, tmp, e, node) {
+ hash_del(&e->node);
+ fence_put(e->fence);
+ kfree(e);
+ }
+
for (i = 0; i < AMDGPU_NUM_SYNCS; ++i)
amdgpu_semaphore_free(adev, &sync->semaphores[i], fence);
for (i = 0; i < AMDGPU_MAX_RINGS; ++i)
amdgpu_fence_unref(&sync->sync_to[i]);
- amdgpu_fence_unref(&sync->last_vm_update);
+ fence_put(sync->last_vm_update);
}
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