uint32_t *ptr;
struct amdgpu_fence *fence;
struct amdgpu_user_fence *user;
- bool grabbed_vmid;
struct amdgpu_vm *vm;
+ unsigned vm_id;
+ uint64_t vm_pd_addr;
struct amdgpu_ctx *ctx;
uint32_t gds_base, gds_size;
uint32_t gws_base, gws_size;
};
struct amdgpu_vm_id {
- unsigned id;
- uint64_t pd_gpu_addr;
+ struct amdgpu_vm_manager_id *mgr_id;
+ uint64_t pd_gpu_addr;
/* last flushed PD/PT update */
- struct fence *flushed_updates;
+ struct fence *flushed_updates;
};
struct amdgpu_vm {
void amdgpu_vm_move_pt_bos_in_lru(struct amdgpu_device *adev,
struct amdgpu_vm *vm);
int amdgpu_vm_grab_id(struct amdgpu_vm *vm, struct amdgpu_ring *ring,
- struct amdgpu_sync *sync, struct fence *fence);
+ struct amdgpu_sync *sync, struct fence *fence,
+ unsigned *vm_id, uint64_t *vm_pd_addr);
void amdgpu_vm_flush(struct amdgpu_ring *ring,
- struct amdgpu_vm *vm,
- struct fence *updates);
+ unsigned vmid,
+ uint64_t pd_addr);
uint64_t amdgpu_vm_map_gart(const dma_addr_t *pages_addr, uint64_t addr);
int amdgpu_vm_update_page_directory(struct amdgpu_device *adev,
struct amdgpu_vm *vm);
* SI supports 16.
*/
+/* Special value that no flush is necessary */
+#define AMDGPU_VM_NO_FLUSH (~0ll)
+
/**
* amdgpu_vm_num_pde - return the number of page directory entries
*
* Allocate an id for the vm, adding fences to the sync obj as necessary.
*/
int amdgpu_vm_grab_id(struct amdgpu_vm *vm, struct amdgpu_ring *ring,
- struct amdgpu_sync *sync, struct fence *fence)
+ struct amdgpu_sync *sync, struct fence *fence,
+ unsigned *vm_id, uint64_t *vm_pd_addr)
{
- struct amdgpu_vm_id *vm_id = &vm->ids[ring->idx];
+ uint64_t pd_addr = amdgpu_bo_gpu_offset(vm->page_directory);
struct amdgpu_device *adev = ring->adev;
- struct amdgpu_vm_manager_id *id;
+ struct amdgpu_vm_id *id = &vm->ids[ring->idx];
+ struct fence *updates = sync->last_vm_update;
int r;
mutex_lock(&adev->vm_manager.lock);
/* check if the id is still valid */
- if (vm_id->id) {
+ if (id->mgr_id) {
+ struct fence *flushed = id->flushed_updates;
+ bool is_later;
long owner;
- id = &adev->vm_manager.ids[vm_id->id];
- owner = atomic_long_read(&id->owner);
- if (owner == (long)vm) {
- list_move_tail(&id->list, &adev->vm_manager.ids_lru);
- trace_amdgpu_vm_grab_id(vm, vm_id->id, ring->idx);
+ if (!flushed)
+ is_later = true;
+ else if (!updates)
+ is_later = false;
+ else
+ is_later = fence_is_later(updates, flushed);
+
+ owner = atomic_long_read(&id->mgr_id->owner);
+ if (!is_later && owner == (long)id &&
+ pd_addr == id->pd_gpu_addr) {
+
+ fence_put(id->mgr_id->active);
+ id->mgr_id->active = fence_get(fence);
+
+ list_move_tail(&id->mgr_id->list,
+ &adev->vm_manager.ids_lru);
- fence_put(id->active);
- id->active = fence_get(fence);
+ *vm_id = id->mgr_id - adev->vm_manager.ids;
+ *vm_pd_addr = AMDGPU_VM_NO_FLUSH;
+ trace_amdgpu_vm_grab_id(vm, *vm_id, ring->idx);
mutex_unlock(&adev->vm_manager.lock);
return 0;
}
}
- /* we definately need to flush */
- vm_id->pd_gpu_addr = ~0ll;
+ id->mgr_id = list_first_entry(&adev->vm_manager.ids_lru,
+ struct amdgpu_vm_manager_id,
+ list);
- id = list_first_entry(&adev->vm_manager.ids_lru,
- struct amdgpu_vm_manager_id,
- list);
- list_move_tail(&id->list, &adev->vm_manager.ids_lru);
- atomic_long_set(&id->owner, (long)vm);
+ r = amdgpu_sync_fence(ring->adev, sync, id->mgr_id->active);
+ if (!r) {
+ fence_put(id->mgr_id->active);
+ id->mgr_id->active = fence_get(fence);
- vm_id->id = id - adev->vm_manager.ids;
- trace_amdgpu_vm_grab_id(vm, vm_id->id, ring->idx);
+ fence_put(id->flushed_updates);
+ id->flushed_updates = fence_get(updates);
- r = amdgpu_sync_fence(ring->adev, sync, id->active);
+ id->pd_gpu_addr = pd_addr;
- if (!r) {
- fence_put(id->active);
- id->active = fence_get(fence);
+ list_move_tail(&id->mgr_id->list, &adev->vm_manager.ids_lru);
+ atomic_long_set(&id->mgr_id->owner, (long)id);
+
+ *vm_id = id->mgr_id - adev->vm_manager.ids;
+ *vm_pd_addr = pd_addr;
+ trace_amdgpu_vm_grab_id(vm, *vm_id, ring->idx);
}
mutex_unlock(&adev->vm_manager.lock);
* amdgpu_vm_flush - hardware flush the vm
*
* @ring: ring to use for flush
- * @vm: vm we want to flush
- * @updates: last vm update that we waited for
+ * @vmid: vmid number to use
+ * @pd_addr: address of the page directory
*
- * Flush the vm.
+ * Emit a VM flush when it is necessary.
*/
void amdgpu_vm_flush(struct amdgpu_ring *ring,
- struct amdgpu_vm *vm,
- struct fence *updates)
+ unsigned vmid,
+ uint64_t pd_addr)
{
- uint64_t pd_addr = amdgpu_bo_gpu_offset(vm->page_directory);
- struct amdgpu_vm_id *vm_id = &vm->ids[ring->idx];
- struct fence *flushed_updates = vm_id->flushed_updates;
- bool is_later;
-
- if (!flushed_updates)
- is_later = true;
- else if (!updates)
- is_later = false;
- else
- is_later = fence_is_later(updates, flushed_updates);
-
- if (pd_addr != vm_id->pd_gpu_addr || is_later) {
- trace_amdgpu_vm_flush(pd_addr, ring->idx, vm_id->id);
- if (is_later) {
- vm_id->flushed_updates = fence_get(updates);
- fence_put(flushed_updates);
- }
- vm_id->pd_gpu_addr = pd_addr;
- amdgpu_ring_emit_vm_flush(ring, vm_id->id, vm_id->pd_gpu_addr);
+ if (pd_addr != AMDGPU_VM_NO_FLUSH) {
+ trace_amdgpu_vm_flush(pd_addr, ring->idx, vmid);
+ amdgpu_ring_emit_vm_flush(ring, vmid, pd_addr);
}
}
int i, r;
for (i = 0; i < AMDGPU_MAX_RINGS; ++i) {
- vm->ids[i].id = 0;
+ vm->ids[i].mgr_id = NULL;
vm->ids[i].flushed_updates = NULL;
}
vm->va = RB_ROOT;
amdgpu_bo_unref(&vm->page_directory);
fence_put(vm->page_directory_fence);
for (i = 0; i < AMDGPU_MAX_RINGS; ++i) {
- unsigned id = vm->ids[i].id;
+ struct amdgpu_vm_id *id = &vm->ids[i];
- atomic_long_cmpxchg(&adev->vm_manager.ids[id].owner,
- (long)vm, 0);
- fence_put(vm->ids[i].flushed_updates);
+ if (id->mgr_id)
+ atomic_long_cmpxchg(&id->mgr_id->owner,
+ (long)id, 0);
+ fence_put(id->flushed_updates);
}
-
}
/**
projects / cascardo / linux.git / commitdiff