From: Evan Quan <evan.quan@xxxxxxx>
Allows userspace components to fetch information
from the vbios image.
v2: agd: fix warning
Signed-off-by: Evan Quan <evan.quan at amd.com>
Reviewed-by: Alex Deucher <alexander.deucher at amd.com>
Reviewed-by: Christian Koenig <christian.koenig at amd.com>
Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | 26 ++++++++++++++++++++++++++
include/uapi/drm/amdgpu_drm.h | 11 +++++++++++
2 files changed, 37 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
index d1cf9ac..9af87ea 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;
diff --git a/include/uapi/drm/amdgpu_drm.h b/include/uapi/drm/amdgpu_drm.h
index 2191a9e..3961836 100644
--- a/include/uapi/drm/amdgpu_drm.h
+++ b/include/uapi/drm/amdgpu_drm.h
@@ -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;
};
};
--
2.5.5
