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drm/amd/amdgpu: export vbios information (v2)

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Allows userspace components to fetch information
from the vbios image.

v2: agd: fix warning

Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net>
Signed-off-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian Koenig <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Evan Quan 2016-12-07 10:05:09 +08:00 committed by Alex Deucher
parent a9f5db9ca7
commit 40ee5888fa
2 changed files with 37 additions and 0 deletions
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26
drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
View File

@ -544,6 +544,32 @@ static int amdgpu_info_ioctl(struct drm_device *dev, void *data, struct drm_file
return copy_to_user(out, &vce_clk_table,
min((size_t)size, sizeof(vce_clk_table))) ? -EFAULT : 0;
}
case AMDGPU_INFO_VBIOS: {
uint32_t bios_size = adev->bios_size;
switch (info->vbios_info.type) {
case AMDGPU_INFO_VBIOS_SIZE:
return copy_to_user(out, &bios_size,
min((size_t)size, sizeof(bios_size)))
? -EFAULT : 0;
case AMDGPU_INFO_VBIOS_IMAGE: {
uint8_t *bios;
uint32_t bios_offset = info->vbios_info.offset;
if (bios_offset >= bios_size)
return -EINVAL;
bios = adev->bios + bios_offset;
return copy_to_user(out, bios,
min((size_t)size, (size_t)(bios_size - bios_offset)))
? -EFAULT : 0;
}
default:
DRM_DEBUG_KMS("Invalid request %d\n",
info->vbios_info.type);
return -EINVAL;
}
}
default:
DRM_DEBUG_KMS("Invalid request %d\n", info->query);
return -EINVAL;

11
include/uapi/drm/amdgpu_drm.h
View File

@ -522,6 +522,12 @@ struct drm_amdgpu_cs_chunk_data {
#define AMDGPU_INFO_MEMORY 0x19
/* Query vce clock table */
#define AMDGPU_INFO_VCE_CLOCK_TABLE 0x1A
/* Query vbios related information */
#define AMDGPU_INFO_VBIOS 0x1B
/* Subquery id: Query vbios size */
#define AMDGPU_INFO_VBIOS_SIZE 0x1
/* Subquery id: Query vbios image */
#define AMDGPU_INFO_VBIOS_IMAGE 0x2
#define AMDGPU_INFO_MMR_SE_INDEX_SHIFT 0
#define AMDGPU_INFO_MMR_SE_INDEX_MASK 0xff
@ -580,6 +586,11 @@ struct drm_amdgpu_info {
} read_mmr_reg;
struct drm_amdgpu_query_fw query_fw;
struct {
__u32 type;
__u32 offset;
} vbios_info;
};
};