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drm/radeon: sync page table updates 

Only necessary if we don't use the same engine for buffer moves and table updates.

Signed-off-by: Christian König <christian.koenig@amd.com>
This commit is contained in:
Christian König 2014-05-30 15:21:16 +02:00
parent 2f93dc32b0
commit 37903b5e08
1 changed files with 7 additions and 2 deletions
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9
drivers/gpu/drm/radeon/radeon_vm.c
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@ -585,7 +585,8 @@ int radeon_vm_update_page_directory(struct radeon_device *rdev,
{
static const uint32_t incr = RADEON_VM_PTE_COUNT * 8;
uint64_t pd_addr = radeon_bo_gpu_offset(vm->page_directory);
struct radeon_bo *pd = vm->page_directory;
uint64_t pd_addr = radeon_bo_gpu_offset(pd);
uint64_t last_pde = ~0, last_pt = ~0;
unsigned count = 0, pt_idx, ndw;
struct radeon_ib ib;
@ -642,6 +643,7 @@ int radeon_vm_update_page_directory(struct radeon_device *rdev,
incr, R600_PTE_VALID);
if (ib.length_dw != 0) {
radeon_semaphore_sync_to(ib.semaphore, pd->tbo.sync_obj);
radeon_semaphore_sync_to(ib.semaphore, vm->last_id_use);
r = radeon_ib_schedule(rdev, &ib, NULL);
if (r) {
@ -689,15 +691,18 @@ static void radeon_vm_update_ptes(struct radeon_device *rdev,
/* walk over the address space and update the page tables */
for (addr = start; addr < end; ) {
uint64_t pt_idx = addr >> RADEON_VM_BLOCK_SIZE;
struct radeon_bo *pt = vm->page_tables[pt_idx].bo;
unsigned nptes;
uint64_t pte;
radeon_semaphore_sync_to(ib->semaphore, pt->tbo.sync_obj);
if ((addr & ~mask) == (end & ~mask))
nptes = end - addr;
else
nptes = RADEON_VM_PTE_COUNT - (addr & mask);
pte = radeon_bo_gpu_offset(vm->page_tables[pt_idx].bo);
pte = radeon_bo_gpu_offset(pt);
pte += (addr & mask) * 8;
if ((last_pte + 8 * count) != pte) {