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drm/amdgpu: add ring buffer information in devcoredump

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Add relevant ringbuffer information such as
rptr, wptr,rb mask, ring name, ring size and also
the rings content for each ring on a gpu reset.

Signed-off-by: Sunil Khatri <sunil.khatri@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Sunil Khatri 2024-03-11 16:58:54 +05:30 committed by Alex Deucher
parent 9bbe787877
commit 3eb899c40a
1 changed files with 21 additions and 0 deletions
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21
drivers/gpu/drm/amd/amdgpu/amdgpu_reset.c
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@ -215,6 +215,27 @@ amdgpu_devcoredump_read(char *buffer, loff_t offset, size_t count,
fault_info->status);
}
drm_printf(&p, "Ring buffer information\n");
for (int i = 0; i < coredump->adev->num_rings; i++) {
int j = 0;
struct amdgpu_ring *ring = coredump->adev->rings[i];
drm_printf(&p, "ring name: %s\n", ring->name);
drm_printf(&p, "Rptr: 0x%llx Wptr: 0x%llx RB mask: %x\n",
amdgpu_ring_get_rptr(ring),
amdgpu_ring_get_wptr(ring),
ring->buf_mask);
drm_printf(&p, "Ring size in dwords: %d\n",
ring->ring_size / 4);
drm_printf(&p, "Ring contents\n");
drm_printf(&p, "Offset \t Value\n");
while (j < ring->ring_size) {
drm_printf(&p, "0x%x \t 0x%x\n", j, ring->ring[j/4]);
j += 4;
}
}
if (coredump->reset_vram_lost)
drm_printf(&p, "VRAM is lost due to GPU reset!\n");
if (coredump->adev->reset_info.num_regs) {