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authorAlex Deucher <alexander.deucher@amd.com>2017-07-04 08:57:33 +0300
committerAlex Deucher <alexander.deucher@amd.com>2017-07-04 17:22:26 +0300
commit7b8d925d5cd3c3497a041d514de1739e2a2d24ef (patch)
tree33a363641fddf6d8c3dc5122b5ea2a41b8cb4c5d /drivers/gpu
parentdcf75843c0f7b654c327c140293ba53bb4b3da85 (diff)
downloadlinux-7b8d925d5cd3c3497a041d514de1739e2a2d24ef.tar.xz
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>
Diffstat (limited to 'drivers/gpu')
-rw-r--r--drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c51
1 files changed, 0 insertions, 51 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
index 20345925d254..3a0b69b09ed6 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
@@ -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);