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drm/amdgpu: reduce ip discovery data reading size

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Only read first 4K data instead of whole TMR block,
so we can reduce the time in full access mode.

Signed-off-by: Wenhui Sheng <Wenhui.Sheng@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Wenhui Sheng 2020-06-24 17:10:02 +08:00 committed by Alex Deucher
parent e3a4d51c76
commit d215a2a3a3
2 changed files with 3 additions and 2 deletions
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2
drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c
View File

@ -133,7 +133,7 @@ static int hw_id_map[MAX_HWIP] = {
static int amdgpu_discovery_read_binary(struct amdgpu_device *adev, uint8_t *binary)
{
uint64_t vram_size = (uint64_t)RREG32(mmRCC_CONFIG_MEMSIZE) << 20;
uint64_t pos = vram_size - adev->discovery_tmr_size;
uint64_t pos = vram_size - DISCOVERY_TMR_OFFSET;
amdgpu_device_vram_access(adev, pos, (uint32_t *)binary,
adev->discovery_tmr_size, false);

3
drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.h
View File

@ -24,7 +24,8 @@
#ifndef __AMDGPU_DISCOVERY__
#define __AMDGPU_DISCOVERY__
#define DISCOVERY_TMR_SIZE (64 << 10)
#define DISCOVERY_TMR_SIZE (4 << 10)
#define DISCOVERY_TMR_OFFSET (64 << 10)
void amdgpu_discovery_fini(struct amdgpu_device *adev);
int amdgpu_discovery_reg_base_init(struct amdgpu_device *adev);