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drm/amdgpu: cleanup VM fragment defines

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We can actually do way more than just the 64KB we currently used as default.

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 2016-08-03 17:46:42 +02:00 committed by Alex Deucher
parent 3a8a6ab4a5
commit 1303c73c61
2 changed files with 5 additions and 5 deletions
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8
drivers/gpu/drm/amd/amdgpu/amdgpu.h
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@ -830,6 +830,9 @@ struct amdgpu_ring {
/* PTBs (Page Table Blocks) need to be aligned to 32K */
#define AMDGPU_VM_PTB_ALIGN_SIZE 32768
/* LOG2 number of continuous pages for the fragment field */
#define AMDGPU_LOG2_PAGES_PER_FRAG 4
#define AMDGPU_PTE_VALID (1 << 0)
#define AMDGPU_PTE_SYSTEM (1 << 1)
#define AMDGPU_PTE_SNOOPED (1 << 2)
@ -840,10 +843,7 @@ struct amdgpu_ring {
#define AMDGPU_PTE_READABLE (1 << 5)
#define AMDGPU_PTE_WRITEABLE (1 << 6)
/* PTE (Page Table Entry) fragment field for different page sizes */
#define AMDGPU_PTE_FRAG_4KB (0 << 7)
#define AMDGPU_PTE_FRAG_64KB (4 << 7)
#define AMDGPU_LOG2_PAGES_PER_FRAG 4
#define AMDGPU_PTE_FRAG(x) ((x & 0x1f) << 7)
/* How to programm VM fault handling */
#define AMDGPU_VM_FAULT_STOP_NEVER 0

2
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
View file

@ -739,7 +739,7 @@ static void amdgpu_vm_frag_ptes(struct amdgpu_device *adev,
*/
/* SI and newer are optimized for 64KB */
uint64_t frag_flags = AMDGPU_PTE_FRAG_64KB;
uint64_t frag_flags = AMDGPU_PTE_FRAG(AMDGPU_LOG2_PAGES_PER_FRAG);
uint64_t frag_align = 0x80;
uint64_t frag_start = ALIGN(pe_start, frag_align);