Commit d215a2a3 authored by Wenhui Sheng's avatar Wenhui Sheng Committed by Alex Deucher
Browse files

drm/amdgpu: reduce ip discovery data reading size 



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

Signed-off-by: default avatarWenhui Sheng <Wenhui.Sheng@amd.com>
Reviewed-by: default avatarHawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent e3a4d51c

drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c

+1 −1
Original line number Diff line number Diff line
@@ -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);

drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.h

+2 −1
Original line number Diff line number Diff line
@@ -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);