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drm/amdgpu: fix vf error handling

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The error handling for virtual functions assumed a single
vf per VM and didn't properly account for bare metal.  Make
the error arrays per device and add locking.

Reviewed-by: Gavin Wan <gavin.wan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher
2017-09-28 09:47:32 -04:00
parent 6f87a89570
commit e23b74aab5
4 changed files with 54 additions and 41 deletions
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13
drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h
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@@ -36,6 +36,18 @@ struct amdgpu_mm_table {
uint64_t gpu_addr;
};
#define AMDGPU_VF_ERROR_ENTRY_SIZE 16
/* struct error_entry - amdgpu VF error information. */
struct amdgpu_vf_error_buffer {
struct mutex lock;
int read_count;
int write_count;
uint16_t code[AMDGPU_VF_ERROR_ENTRY_SIZE];
uint16_t flags[AMDGPU_VF_ERROR_ENTRY_SIZE];
uint64_t data[AMDGPU_VF_ERROR_ENTRY_SIZE];
};
/**
* struct amdgpu_virt_ops - amdgpu device virt operations
*/
@@ -59,6 +71,7 @@ struct amdgpu_virt {
struct work_struct flr_work;
struct amdgpu_mm_table mm_table;
const struct amdgpu_virt_ops *ops;
struct amdgpu_vf_error_buffer vf_errors;
};
#define AMDGPU_CSA_SIZE (8 * 1024)