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drm/radeon: align VM PTBs (Page Table Blocks) to 32K

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Covers requirements of all current asics.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
This commit is contained in:
Alex Deucher 2013-07-12 15:56:02 -04:00
parent 6c4f978b35
commit 1c01103cb9
2 changed files with 11 additions and 6 deletions
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5
drivers/gpu/drm/radeon/radeon.h
View File

@ -784,6 +784,11 @@ struct radeon_mec {
/* number of entries in page table */
#define RADEON_VM_PTE_COUNT (1 << RADEON_VM_BLOCK_SIZE)
/* PTBs (Page Table Blocks) need to be aligned to 32K */
#define RADEON_VM_PTB_ALIGN_SIZE 32768
#define RADEON_VM_PTB_ALIGN_MASK (RADEON_VM_PTB_ALIGN_SIZE - 1)
#define RADEON_VM_PTB_ALIGN(a) (((a) + RADEON_VM_PTB_ALIGN_MASK) & ~RADEON_VM_PTB_ALIGN_MASK)
struct radeon_vm {
struct list_head list;
struct list_head va;

12
drivers/gpu/drm/radeon/radeon_gart.c
View File

@ -466,8 +466,8 @@ int radeon_vm_manager_init(struct radeon_device *rdev)
size += rdev->vm_manager.max_pfn * 8;
size *= 2;
r = radeon_sa_bo_manager_init(rdev, &rdev->vm_manager.sa_manager,
RADEON_GPU_PAGE_ALIGN(size),
RADEON_GPU_PAGE_SIZE,
RADEON_VM_PTB_ALIGN(size),
RADEON_VM_PTB_ALIGN_SIZE,
RADEON_GEM_DOMAIN_VRAM);
if (r) {
dev_err(rdev->dev, "failed to allocate vm bo (%dKB)\n",
@ -621,10 +621,10 @@ int radeon_vm_alloc_pt(struct radeon_device *rdev, struct radeon_vm *vm)
}
retry:
pd_size = RADEON_GPU_PAGE_ALIGN(radeon_vm_directory_size(rdev));
pd_size = RADEON_VM_PTB_ALIGN(radeon_vm_directory_size(rdev));
r = radeon_sa_bo_new(rdev, &rdev->vm_manager.sa_manager,
&vm->page_directory, pd_size,
RADEON_GPU_PAGE_SIZE, false);
RADEON_VM_PTB_ALIGN_SIZE, false);
if (r == -ENOMEM) {
r = radeon_vm_evict(rdev, vm);
if (r)
@ -953,8 +953,8 @@ static int radeon_vm_update_pdes(struct radeon_device *rdev,
retry:
r = radeon_sa_bo_new(rdev, &rdev->vm_manager.sa_manager,
&vm->page_tables[pt_idx],
RADEON_VM_PTE_COUNT * 8,
RADEON_GPU_PAGE_SIZE, false);
RADEON_VM_PTB_ALIGN(RADEON_VM_PTE_COUNT * 8),
RADEON_VM_PTB_ALIGN_SIZE, false);
if (r == -ENOMEM) {
r = radeon_vm_evict(rdev, vm);