From: Wenhui Sheng Date: Wed, 24 Jun 2020 09:10:02 +0000 (+0800) Subject: drm/amdgpu: reduce ip discovery data reading size X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=d215a2a3a341905f4c5192b158e3af1fbd60a29e;p=linux.git 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: Wenhui Sheng Reviewed-by: Hawking Zhang Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c index 4ef38c2411aea..a50ff2306504c 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c @@ -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); diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.h index d50d597c45ed4..8f6183801cb34 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.h @@ -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);