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drm/amdgpu/gfx9: fix driver reload with KIQ 

Drop the KCQ disabling via KIQ.  We disable the MEC shortly
after anyway, so there is no need to wait for all of this.
Doing so seems to leave the MEC in a bad way.

Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2017-07-04 01:57:33 -04:00
parent dcf75843c0
commit 7b8d925d5c
1 changed files with 0 additions and 51 deletions
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51
drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
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@ -2502,56 +2502,6 @@ static int gfx_v9_0_kiq_kcq_enable(struct amdgpu_device *adev)
return r;
}
static int gfx_v9_0_kiq_kcq_disable(struct amdgpu_device *adev)
{
struct amdgpu_ring *kiq_ring = &adev->gfx.kiq.ring;
uint32_t scratch, tmp = 0;
int r, i;
r = amdgpu_gfx_scratch_get(adev, &scratch);
if (r) {
DRM_ERROR("Failed to get scratch reg (%d).\n", r);
return r;
}
WREG32(scratch, 0xCAFEDEAD);
r = amdgpu_ring_alloc(kiq_ring, 6 + 3);
if (r) {
DRM_ERROR("Failed to lock KIQ (%d).\n", r);
amdgpu_gfx_scratch_free(adev, scratch);
return r;
}
/* unmap queues */
amdgpu_ring_write(kiq_ring, PACKET3(PACKET3_UNMAP_QUEUES, 4));
amdgpu_ring_write(kiq_ring,
PACKET3_UNMAP_QUEUES_ACTION(1)| /* RESET_QUEUES */
PACKET3_UNMAP_QUEUES_QUEUE_SEL(2)); /* select all queues */
amdgpu_ring_write(kiq_ring, 0);
amdgpu_ring_write(kiq_ring, 0);
amdgpu_ring_write(kiq_ring, 0);
amdgpu_ring_write(kiq_ring, 0);
/* write to scratch for completion */
amdgpu_ring_write(kiq_ring, PACKET3(PACKET3_SET_UCONFIG_REG, 1));
amdgpu_ring_write(kiq_ring, (scratch - PACKET3_SET_UCONFIG_REG_START));
amdgpu_ring_write(kiq_ring, 0xDEADBEEF);
amdgpu_ring_commit(kiq_ring);
for (i = 0; i < adev->usec_timeout; i++) {
tmp = RREG32(scratch);
if (tmp == 0xDEADBEEF)
break;
DRM_UDELAY(1);
}
if (i >= adev->usec_timeout) {
DRM_ERROR("KCQ disable failed (scratch(0x%04X)=0x%08X)\n",
scratch, tmp);
r = -EINVAL;
}
amdgpu_gfx_scratch_free(adev, scratch);
return r;
}
static int gfx_v9_0_mqd_init(struct amdgpu_ring *ring)
{
struct amdgpu_device *adev = ring->adev;
@ -2996,7 +2946,6 @@ static int gfx_v9_0_hw_fini(void *handle)
pr_debug("For SRIOV client, shouldn't do anything.\n");
return 0;
}
gfx_v9_0_kiq_kcq_disable(adev);
gfx_v9_0_cp_enable(adev, false);
gfx_v9_0_rlc_stop(adev);