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drm/amdgpu/gfx9: create mqd backups

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And properly synchronize them with the master during
queue init.

Reviewed-by: monk liu <monk.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2017-04-17 15:29:14 -04:00
parent cdf6adb28f
commit 0ef376cacb
1 changed files with 14 additions and 2 deletions
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16
drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
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@ -666,7 +666,10 @@ static int gfx_v9_0_compute_mqd_sw_init(struct amdgpu_device *adev)
return r;
}
/*TODO: prepare MQD backup */
/* prepare MQD backup */
adev->gfx.mec.mqd_backup[AMDGPU_MAX_COMPUTE_RINGS] = kmalloc(sizeof(struct v9_mqd), GFP_KERNEL);
if (!adev->gfx.mec.mqd_backup[AMDGPU_MAX_COMPUTE_RINGS])
dev_warn(adev->dev, "no memory to create MQD backup for ring %s\n", ring->name);
}
/* create MQD for each KCQ */
@ -681,7 +684,10 @@ static int gfx_v9_0_compute_mqd_sw_init(struct amdgpu_device *adev)
return r;
}
/* TODO: prepare MQD backup */
/* prepare MQD backup */
adev->gfx.mec.mqd_backup[i] = kmalloc(sizeof(struct v9_mqd), GFP_KERNEL);
if (!adev->gfx.mec.mqd_backup[i])
dev_warn(adev->dev, "no memory to create MQD backup for ring %s\n", ring->name);
}
}
@ -695,10 +701,12 @@ static void gfx_v9_0_compute_mqd_sw_fini(struct amdgpu_device *adev)
for (i = 0; i < adev->gfx.num_compute_rings; i++) {
ring = &adev->gfx.compute_ring[i];
kfree(adev->gfx.mec.mqd_backup[i]);
amdgpu_bo_free_kernel(&ring->mqd_obj, &ring->mqd_gpu_addr, (void **)&ring->mqd_ptr);
}
ring = &adev->gfx.kiq.ring;
kfree(adev->gfx.mec.mqd_backup[AMDGPU_MAX_COMPUTE_RINGS]);
amdgpu_bo_free_kernel(&ring->mqd_obj, &ring->mqd_gpu_addr, (void **)&ring->mqd_ptr);
}
@ -2132,8 +2140,12 @@ static int gfx_v9_0_kiq_init_queue(struct amdgpu_ring *ring)
soc15_grbm_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 */
/* 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));
/* reset ring buffer */
ring->wptr = 0;