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| author | Evan Quan <evan.quan@amd.com> | 2016-12-07 05:05:09 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2016-12-08 22:12:09 +0300 |
| commit | 40ee5888faecf4ea5423dbe94c862d03c3e7e12c (patch) | |
| tree | 2d1754f6b54ae89ee82b2a34a4ce73b523fdfa47 /drivers/gpu | |
| parent | a9f5db9ca7a92aa00af82b3d10416e34b31a9493 (diff) | |
| download | linux-40ee5888faecf4ea5423dbe94c862d03c3e7e12c.tar.xz | |
drm/amd/amdgpu: export vbios information (v2)
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>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c index d1cf9ac0dff1..9af87eaf8ee3 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c @@ -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; |