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drm/amdgpu: generalize page table level 

No functional change, but the base for multi level page tables.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Christian König 2016-10-12 14:46:26 +02:00 committed by Alex Deucher
parent 8437a097fe
commit 67003a15b7
3 changed files with 50 additions and 50 deletions
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2
drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
View File

@ -872,7 +872,7 @@ static int amdgpu_cs_ib_vm_chunk(struct amdgpu_device *adev,
}
if (p->job->vm) {
p->job->vm_pd_addr = amdgpu_bo_gpu_offset(vm->page_directory);
p->job->vm_pd_addr = amdgpu_bo_gpu_offset(vm->root.bo);
r = amdgpu_bo_vm_update_pte(p);
if (r)

88
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
View File

@ -115,9 +115,9 @@ void amdgpu_vm_get_pd_bo(struct amdgpu_vm *vm,
struct list_head *validated,
struct amdgpu_bo_list_entry *entry)
{
entry->robj = vm->page_directory;
entry->robj = vm->root.bo;
entry->priority = 0;
entry->tv.bo = &vm->page_directory->tbo;
entry->tv.bo = &entry->robj->tbo;
entry->tv.shared = true;
entry->user_pages = NULL;
list_add(&entry->tv.head, validated);
@ -149,8 +149,8 @@ int amdgpu_vm_validate_pt_bos(struct amdgpu_device *adev, struct amdgpu_vm *vm,
return 0;
/* add the vm page table to the list */
for (i = 0; i <= vm->max_pde_used; ++i) {
struct amdgpu_bo *bo = vm->page_tables[i].bo;
for (i = 0; i <= vm->root.last_entry_used; ++i) {
struct amdgpu_bo *bo = vm->root.entries[i].bo;
if (!bo)
continue;
@ -178,8 +178,8 @@ void amdgpu_vm_move_pt_bos_in_lru(struct amdgpu_device *adev,
unsigned i;
spin_lock(&glob->lru_lock);
for (i = 0; i <= vm->max_pde_used; ++i) {
struct amdgpu_bo *bo = vm->page_tables[i].bo;
for (i = 0; i <= vm->root.last_entry_used; ++i) {
struct amdgpu_bo *bo = vm->root.entries[i].bo;
if (!bo)
continue;
@ -227,15 +227,15 @@ int amdgpu_vm_alloc_pts(struct amdgpu_device *adev,
BUG_ON(eaddr >= amdgpu_vm_num_pdes(adev));
if (eaddr > vm->max_pde_used)
vm->max_pde_used = eaddr;
if (eaddr > vm->root.last_entry_used)
vm->root.last_entry_used = eaddr;
/* 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;
struct reservation_object *resv = vm->root.bo->tbo.resv;
struct amdgpu_bo *pt;
if (vm->page_tables[pt_idx].bo)
if (vm->root.entries[pt_idx].bo)
continue;
r = amdgpu_bo_create(adev, AMDGPU_VM_PTE_COUNT * 8,
@ -252,10 +252,10 @@ int amdgpu_vm_alloc_pts(struct amdgpu_device *adev,
/* Keep a reference to the page table to avoid freeing
* them up in the wrong order.
*/
pt->parent = amdgpu_bo_ref(vm->page_directory);
pt->parent = amdgpu_bo_ref(vm->root.bo);
vm->page_tables[pt_idx].bo = pt;
vm->page_tables[pt_idx].addr = 0;
vm->root.entries[pt_idx].bo = pt;
vm->root.entries[pt_idx].addr = 0;
}
return 0;
@ -672,15 +672,15 @@ int amdgpu_vm_update_page_directory(struct amdgpu_device *adev,
int r;
ring = container_of(vm->entity.sched, struct amdgpu_ring, sched);
shadow = vm->page_directory->shadow;
shadow = vm->root.bo->shadow;
/* padding, etc. */
ndw = 64;
/* assume the worst case */
ndw += vm->max_pde_used * 6;
ndw += vm->root.last_entry_used * 6;
pd_addr = amdgpu_bo_gpu_offset(vm->page_directory);
pd_addr = amdgpu_bo_gpu_offset(vm->root.bo);
if (shadow) {
r = amdgpu_ttm_bind(&shadow->tbo, &shadow->tbo.mem);
if (r)
@ -700,8 +700,8 @@ int amdgpu_vm_update_page_directory(struct amdgpu_device *adev,
params.ib = &job->ibs[0];
/* walk over the address space and update the page directory */
for (pt_idx = 0; pt_idx <= vm->max_pde_used; ++pt_idx) {
struct amdgpu_bo *bo = vm->page_tables[pt_idx].bo;
for (pt_idx = 0; pt_idx <= vm->root.last_entry_used; ++pt_idx) {
struct amdgpu_bo *bo = vm->root.entries[pt_idx].bo;
uint64_t pde, pt;
if (bo == NULL)
@ -717,10 +717,10 @@ int amdgpu_vm_update_page_directory(struct amdgpu_device *adev,
}
pt = amdgpu_bo_gpu_offset(bo);
if (vm->page_tables[pt_idx].addr == pt)
if (vm->root.entries[pt_idx].addr == pt)
continue;
vm->page_tables[pt_idx].addr = pt;
vm->root.entries[pt_idx].addr = pt;
pde = pd_addr + pt_idx * 8;
if (((last_pde + 8 * count) != pde) ||
@ -755,7 +755,7 @@ int amdgpu_vm_update_page_directory(struct amdgpu_device *adev,
if (count) {
uint64_t pt_addr = amdgpu_vm_adjust_mc_addr(adev, last_pt);
if (vm->page_directory->shadow)
if (vm->root.bo->shadow)
amdgpu_vm_do_set_ptes(&params, last_shadow, pt_addr,
count, incr, AMDGPU_PTE_VALID);
@ -769,7 +769,7 @@ int amdgpu_vm_update_page_directory(struct amdgpu_device *adev,
}
amdgpu_ring_pad_ib(ring, params.ib);
amdgpu_sync_resv(adev, &job->sync, vm->page_directory->tbo.resv,
amdgpu_sync_resv(adev, &job->sync, vm->root.bo->tbo.resv,
AMDGPU_FENCE_OWNER_VM);
if (shadow)
amdgpu_sync_resv(adev, &job->sync, shadow->tbo.resv,
@ -781,7 +781,7 @@ int amdgpu_vm_update_page_directory(struct amdgpu_device *adev,
if (r)
goto error_free;
amdgpu_bo_fence(vm->page_directory, fence, true);
amdgpu_bo_fence(vm->root.bo, fence, true);
dma_fence_put(vm->last_dir_update);
vm->last_dir_update = dma_fence_get(fence);
dma_fence_put(fence);
@ -821,7 +821,7 @@ static void amdgpu_vm_update_ptes(struct amdgpu_pte_update_params *params,
/* initialize the variables */
addr = start;
pt_idx = addr >> amdgpu_vm_block_size;
pt = params->vm->page_tables[pt_idx].bo;
pt = params->vm->root.entries[pt_idx].bo;
if (params->shadow) {
if (!pt->shadow)
return;
@ -844,7 +844,7 @@ static void amdgpu_vm_update_ptes(struct amdgpu_pte_update_params *params,
/* walk over the address space and update the page tables */
while (addr < end) {
pt_idx = addr >> amdgpu_vm_block_size;
pt = params->vm->page_tables[pt_idx].bo;
pt = params->vm->root.entries[pt_idx].bo;
if (params->shadow) {
if (!pt->shadow)
return;
@ -1058,12 +1058,12 @@ static int amdgpu_vm_bo_update_mapping(struct amdgpu_device *adev,
if (r)
goto error_free;
r = amdgpu_sync_resv(adev, &job->sync, vm->page_directory->tbo.resv,
r = amdgpu_sync_resv(adev, &job->sync, vm->root.bo->tbo.resv,
owner);
if (r)
goto error_free;
r = reservation_object_reserve_shared(vm->page_directory->tbo.resv);
r = reservation_object_reserve_shared(vm->root.bo->tbo.resv);
if (r)
goto error_free;
@ -1079,7 +1079,7 @@ static int amdgpu_vm_bo_update_mapping(struct amdgpu_device *adev,
if (r)
goto error_free;
amdgpu_bo_fence(vm->page_directory, f, true);
amdgpu_bo_fence(vm->root.bo, f, true);
dma_fence_put(*fence);
*fence = f;
return 0;
@ -1372,7 +1372,7 @@ static void amdgpu_vm_free_mapping(struct amdgpu_device *adev,
*/
static void amdgpu_vm_prt_fini(struct amdgpu_device *adev, struct amdgpu_vm *vm)
{
struct reservation_object *resv = vm->page_directory->tbo.resv;
struct reservation_object *resv = vm->root.bo->tbo.resv;
struct dma_fence *excl, **shared;
unsigned i, shared_count;
int r;
@ -1897,8 +1897,8 @@ int amdgpu_vm_init(struct amdgpu_device *adev, struct amdgpu_vm *vm)
pd_entries = amdgpu_vm_num_pdes(adev);
/* allocate page table array */
vm->page_tables = drm_calloc_large(pd_entries, sizeof(struct amdgpu_vm_pt));
if (vm->page_tables == NULL) {
vm->root.entries = drm_calloc_large(pd_entries, sizeof(struct amdgpu_vm_pt));
if (vm->root.entries == NULL) {
DRM_ERROR("Cannot allocate memory for page table array\n");
return -ENOMEM;
}
@ -1922,29 +1922,29 @@ int amdgpu_vm_init(struct amdgpu_device *adev, struct amdgpu_vm *vm)
AMDGPU_GEM_CREATE_SHADOW |
AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS |
AMDGPU_GEM_CREATE_VRAM_CLEARED,
NULL, NULL, &vm->page_directory);
NULL, NULL, &vm->root.bo);
if (r)
goto error_free_sched_entity;
r = amdgpu_bo_reserve(vm->page_directory, false);
r = amdgpu_bo_reserve(vm->root.bo, false);
if (r)
goto error_free_page_directory;
goto error_free_root;
vm->last_eviction_counter = atomic64_read(&adev->num_evictions);
amdgpu_bo_unreserve(vm->page_directory);
amdgpu_bo_unreserve(vm->root.bo);
return 0;
error_free_page_directory:
amdgpu_bo_unref(&vm->page_directory->shadow);
amdgpu_bo_unref(&vm->page_directory);
vm->page_directory = NULL;
error_free_root:
amdgpu_bo_unref(&vm->root.bo->shadow);
amdgpu_bo_unref(&vm->root.bo);
vm->root.bo = NULL;
error_free_sched_entity:
amd_sched_entity_fini(&ring->sched, &vm->entity);
err:
drm_free_large(vm->page_tables);
drm_free_large(vm->root.entries);
return r;
}
@ -1985,7 +1985,7 @@ void amdgpu_vm_fini(struct amdgpu_device *adev, struct amdgpu_vm *vm)
}
for (i = 0; i < amdgpu_vm_num_pdes(adev); i++) {
struct amdgpu_bo *pt = vm->page_tables[i].bo;
struct amdgpu_bo *pt = vm->root.entries[i].bo;
if (!pt)
continue;
@ -1993,10 +1993,10 @@ void amdgpu_vm_fini(struct amdgpu_device *adev, struct amdgpu_vm *vm)
amdgpu_bo_unref(&pt->shadow);
amdgpu_bo_unref(&pt);
}
drm_free_large(vm->page_tables);
drm_free_large(vm->root.entries);
amdgpu_bo_unref(&vm->page_directory->shadow);
amdgpu_bo_unref(&vm->page_directory);
amdgpu_bo_unref(&vm->root.bo->shadow);
amdgpu_bo_unref(&vm->root.bo);
dma_fence_put(vm->last_dir_update);
}

10
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h
View File

@ -79,6 +79,10 @@ struct amdgpu_bo_list_entry;
struct amdgpu_vm_pt {
struct amdgpu_bo *bo;
uint64_t addr;
/* array of page tables, one for each directory entry */
struct amdgpu_vm_pt *entries;
unsigned last_entry_used;
};
struct amdgpu_vm {
@ -98,14 +102,10 @@ struct amdgpu_vm {
struct list_head freed;
/* contains the page directory */
struct amdgpu_bo *page_directory;
unsigned max_pde_used;
struct amdgpu_vm_pt root;
struct dma_fence *last_dir_update;
uint64_t last_eviction_counter;
/* array of page tables, one for each page directory entry */
struct amdgpu_vm_pt *page_tables;
/* for id and flush management per ring */
struct amdgpu_vm_id *ids[AMDGPU_MAX_RINGS];