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drm/amdgpu: stop splitting PTE commands into smaller ones

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It doesn't make much sense to create bigger commands first which we then need
to split into smaller one again. Just make sure the commands we create aren't
to big in the first place.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Christian König
2016-08-12 12:59:59 +02:00
committed by Alex Deucher
parent dc157c6daa
commit 96105e5375
5 changed files with 70 additions and 146 deletions
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6
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
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@@ -639,7 +639,8 @@ int amdgpu_vm_update_page_directory(struct amdgpu_device *adev,
pde = pd_addr + pt_idx * 8;
if (((last_pde + 8 * count) != pde) ||
((last_pt + incr * count) != pt)) {
((last_pt + incr * count) != pt) ||
(count == AMDGPU_VM_MAX_UPDATE_SIZE)) {
if (count) {
amdgpu_vm_update_pages(&params, last_pde,
@@ -743,7 +744,8 @@ static void amdgpu_vm_update_ptes(struct amdgpu_pte_update_params *params,
next_pe_start = amdgpu_bo_gpu_offset(pt);
next_pe_start += (addr & mask) * 8;
if ((cur_pe_start + 8 * cur_nptes) == next_pe_start) {
if ((cur_pe_start + 8 * cur_nptes) == next_pe_start &&
((cur_nptes + nptes) <= AMDGPU_VM_MAX_UPDATE_SIZE)) {
/* The next ptb is consecutive to current ptb.
* Don't call amdgpu_vm_update_pages now.
* Will update two ptbs together in future.