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drm/amdgpu: Introduce cached_rptr and is_guilty callback in amdgpu_ring

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This patch introduces the following changes:
- Add `cached_rptr` to the `amdgpu_ring` structure to store the read pointer before a reset.
- Add `is_guilty` callback to the `amdgpu_ring_funcs` structure to check if a ring is guilty of causing a timeout.

Suggested-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Jesse Zhang <jesse.zhang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Jesse.zhang@amd.com 2025-02-13 10:30:07 +08:00 committed by Alex Deucher
parent 4c02f73016
commit 4d3c4f4f7f
2 changed files with 5 additions and 0 deletions
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2
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
View File

@ -349,6 +349,8 @@ int amdgpu_ring_init(struct amdgpu_device *adev, struct amdgpu_ring *ring,
ring->buf_mask = (ring->ring_size / 4) - 1;
ring->ptr_mask = ring->funcs->support_64bit_ptrs ?
0xffffffffffffffff : ring->buf_mask;
/* Initialize cached_rptr to 0 */
ring->cached_rptr = 0;
/* Allocate ring buffer */
if (ring->is_mes_queue) {

3
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
View File

@ -238,6 +238,7 @@ struct amdgpu_ring_funcs {
void (*patch_de)(struct amdgpu_ring *ring, unsigned offset);
int (*reset)(struct amdgpu_ring *ring, unsigned int vmid);
void (*emit_cleaner_shader)(struct amdgpu_ring *ring);
bool (*is_guilty)(struct amdgpu_ring *ring);
};
struct amdgpu_ring {
@ -307,6 +308,8 @@ struct amdgpu_ring {
bool is_sw_ring;
unsigned int entry_index;
/* store the cached rptr to restore after reset */
uint64_t cached_rptr;
};