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drm/amdgpu: reserve/unreserve objects out of map/unmap operations 

Change-Id: Id6514f2fb6e002437fdbe99353d5d35f4ac736c7
Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
This commit is contained in:
Chunming Zhou 2015-11-13 14:18:38 +08:00 committed by Alex Deucher
parent ef9f0a83d6
commit 49b02b180a
2 changed files with 25 additions and 25 deletions
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21
drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
View File

@ -515,6 +515,9 @@ int amdgpu_gem_va_ioctl(struct drm_device *dev, void *data,
struct amdgpu_fpriv *fpriv = filp->driver_priv;
struct amdgpu_bo *rbo;
struct amdgpu_bo_va *bo_va;
struct ttm_validate_buffer tv, tv_pd;
struct ww_acquire_ctx ticket;
struct list_head list, duplicates;
uint32_t invalid_flags, va_flags = 0;
int r = 0;
@ -552,7 +555,18 @@ int amdgpu_gem_va_ioctl(struct drm_device *dev, void *data,
return -ENOENT;
mutex_lock(&fpriv->vm.mutex);
rbo = gem_to_amdgpu_bo(gobj);
r = amdgpu_bo_reserve(rbo, false);
INIT_LIST_HEAD(&list);
INIT_LIST_HEAD(&duplicates);
tv.bo = &rbo->tbo;
tv.shared = true;
list_add(&tv.head, &list);
if (args->operation == AMDGPU_VA_OP_MAP) {
tv_pd.bo = &fpriv->vm.page_directory->tbo;
tv_pd.shared = true;
list_add(&tv_pd.head, &list);
}
r = ttm_eu_reserve_buffers(&ticket, &list, true, &duplicates);
if (r) {
mutex_unlock(&fpriv->vm.mutex);
drm_gem_object_unreference_unlocked(gobj);
@ -561,7 +575,8 @@ int amdgpu_gem_va_ioctl(struct drm_device *dev, void *data,
bo_va = amdgpu_vm_bo_find(&fpriv->vm, rbo);
if (!bo_va) {
amdgpu_bo_unreserve(rbo);
ttm_eu_backoff_reservation(&ticket, &list);
drm_gem_object_unreference_unlocked(gobj);
mutex_unlock(&fpriv->vm.mutex);
return -ENOENT;
}
@ -584,7 +599,7 @@ int amdgpu_gem_va_ioctl(struct drm_device *dev, void *data,
default:
break;
}
ttm_eu_backoff_reservation(&ticket, &list);
if (!r && !(args->flags & AMDGPU_VM_DELAY_UPDATE))
amdgpu_gem_va_update_vm(adev, bo_va, args->operation);
mutex_unlock(&fpriv->vm.mutex);

29
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
View File

@ -985,7 +985,7 @@ struct amdgpu_bo_va *amdgpu_vm_bo_add(struct amdgpu_device *adev,
* Add a mapping of the BO at the specefied addr into the VM.
* Returns 0 for success, error for failure.
*
* Object has to be reserved and gets unreserved by this function!
* Object has to be reserved and unreserved outside!
*/
int amdgpu_vm_bo_map(struct amdgpu_device *adev,
struct amdgpu_bo_va *bo_va,
@ -1001,23 +1001,18 @@ int amdgpu_vm_bo_map(struct amdgpu_device *adev,
/* validate the parameters */
if (saddr & AMDGPU_GPU_PAGE_MASK || offset & AMDGPU_GPU_PAGE_MASK ||
size == 0 || size & AMDGPU_GPU_PAGE_MASK) {
amdgpu_bo_unreserve(bo_va->bo);
size == 0 || size & AMDGPU_GPU_PAGE_MASK)
return -EINVAL;
}
/* make sure object fit at this offset */
eaddr = saddr + size;
if ((saddr >= eaddr) || (offset + size > amdgpu_bo_size(bo_va->bo))) {
amdgpu_bo_unreserve(bo_va->bo);
if ((saddr >= eaddr) || (offset + size > amdgpu_bo_size(bo_va->bo)))
return -EINVAL;
}
last_pfn = eaddr / AMDGPU_GPU_PAGE_SIZE;
if (last_pfn > adev->vm_manager.max_pfn) {
dev_err(adev->dev, "va above limit (0x%08X > 0x%08X)\n",
last_pfn, adev->vm_manager.max_pfn);
amdgpu_bo_unreserve(bo_va->bo);
return -EINVAL;
}
@ -1034,14 +1029,12 @@ int amdgpu_vm_bo_map(struct amdgpu_device *adev,
dev_err(adev->dev, "bo %p va 0x%010Lx-0x%010Lx conflict with "
"0x%010lx-0x%010lx\n", bo_va->bo, saddr, eaddr,
tmp->it.start, tmp->it.last + 1);
amdgpu_bo_unreserve(bo_va->bo);
r = -EINVAL;
goto error;
}
mapping = kmalloc(sizeof(*mapping), GFP_KERNEL);
if (!mapping) {
amdgpu_bo_unreserve(bo_va->bo);
r = -ENOMEM;
goto error;
}
@ -1067,8 +1060,6 @@ int amdgpu_vm_bo_map(struct amdgpu_device *adev,
if (eaddr > vm->max_pde_used)
vm->max_pde_used = eaddr;
amdgpu_bo_unreserve(bo_va->bo);
/* walk over the address space and allocate the page tables */
for (pt_idx = saddr; pt_idx <= eaddr; ++pt_idx) {
struct reservation_object *resv = vm->page_directory->tbo.resv;
@ -1077,18 +1068,15 @@ int amdgpu_vm_bo_map(struct amdgpu_device *adev,
if (vm->page_tables[pt_idx].bo)
continue;
ww_mutex_lock(&resv->lock, NULL);
r = amdgpu_bo_create(adev, AMDGPU_VM_PTE_COUNT * 8,
AMDGPU_GPU_PAGE_SIZE, true,
AMDGPU_GEM_DOMAIN_VRAM,
AMDGPU_GEM_CREATE_NO_CPU_ACCESS,
NULL, resv, &pt);
if (r) {
ww_mutex_unlock(&resv->lock);
if (r)
goto error_free;
}
r = amdgpu_vm_clear_bo(adev, pt);
ww_mutex_unlock(&resv->lock);
if (r) {
amdgpu_bo_unref(&pt);
goto error_free;
@ -1122,7 +1110,7 @@ error:
* Remove a mapping of the BO at the specefied addr from the VM.
* Returns 0 for success, error for failure.
*
* Object has to be reserved and gets unreserved by this function!
* Object has to be reserved and unreserved outside!
*/
int amdgpu_vm_bo_unmap(struct amdgpu_device *adev,
struct amdgpu_bo_va *bo_va,
@ -1147,10 +1135,8 @@ int amdgpu_vm_bo_unmap(struct amdgpu_device *adev,
break;
}
if (&mapping->list == &bo_va->invalids) {
amdgpu_bo_unreserve(bo_va->bo);
if (&mapping->list == &bo_va->invalids)
return -ENOENT;
}
}
list_del(&mapping->list);
@ -1163,7 +1149,6 @@ int amdgpu_vm_bo_unmap(struct amdgpu_device *adev,
list_add(&mapping->list, &vm->freed);
else
kfree(mapping);
amdgpu_bo_unreserve(bo_va->bo);
return 0;
}