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drm/amdgpu/gfx8: fix resume of KIQ and KCQs

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No need to reset the wptr and clear the rings.  The UNMAP_QUEUES
packet writes the current MQD state back the MQD on suspend,
so there is no need to reset it as well.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2017-03-31 12:00:14 -04:00
parent 9d11ca9c09
commit a545e491bb
1 changed files with 13 additions and 13 deletions
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26
drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
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@ -4983,18 +4983,7 @@ static int gfx_v8_0_kiq_init_queue(struct amdgpu_ring *ring)
gfx_v8_0_kiq_setting(ring);
if (!adev->gfx.in_reset && !adev->gfx.in_suspend) {
memset((void *)mqd, 0, sizeof(*mqd));
mutex_lock(&adev->srbm_mutex);
vi_srbm_select(adev, ring->me, ring->pipe, ring->queue, 0);
gfx_v8_0_mqd_init(ring);
gfx_v8_0_kiq_init_register(ring);
vi_srbm_select(adev, 0, 0, 0, 0);
mutex_unlock(&adev->srbm_mutex);
if (adev->gfx.mec.mqd_backup[mqd_idx])
memcpy(adev->gfx.mec.mqd_backup[mqd_idx], mqd, sizeof(*mqd));
} else { /* for GPU_RESET case */
if (adev->gfx.in_reset) { /* for GPU_RESET case */
/* reset MQD to a clean status */
if (adev->gfx.mec.mqd_backup[mqd_idx])
memcpy(mqd, adev->gfx.mec.mqd_backup[mqd_idx], sizeof(*mqd));
@ -5008,6 +4997,17 @@ static int gfx_v8_0_kiq_init_queue(struct amdgpu_ring *ring)
gfx_v8_0_kiq_init_register(ring);
vi_srbm_select(adev, 0, 0, 0, 0);
mutex_unlock(&adev->srbm_mutex);
} else {
memset((void *)mqd, 0, sizeof(*mqd));
mutex_lock(&adev->srbm_mutex);
vi_srbm_select(adev, ring->me, ring->pipe, ring->queue, 0);
gfx_v8_0_mqd_init(ring);
gfx_v8_0_kiq_init_register(ring);
vi_srbm_select(adev, 0, 0, 0, 0);
mutex_unlock(&adev->srbm_mutex);
if (adev->gfx.mec.mqd_backup[mqd_idx])
memcpy(adev->gfx.mec.mqd_backup[mqd_idx], mqd, sizeof(*mqd));
}
return 0;
@ -5029,7 +5029,7 @@ static int gfx_v8_0_kcq_init_queue(struct amdgpu_ring *ring)
if (adev->gfx.mec.mqd_backup[mqd_idx])
memcpy(adev->gfx.mec.mqd_backup[mqd_idx], mqd, sizeof(*mqd));
} else { /* for GPU_RESET case */
} else if (adev->gfx.in_reset) { /* for GPU_RESET case */
/* reset MQD to a clean status */
if (adev->gfx.mec.mqd_backup[mqd_idx])
memcpy(mqd, adev->gfx.mec.mqd_backup[mqd_idx], sizeof(*mqd));