AuxXxilium/linux_dsm_epyc7002
1
0
Fork 0
mirror of https://github.com/AuxXxilium/linux_dsm_epyc7002.git synced 2024-12-20 00:27:24 +07:00
Code Issues Actions Packages Projects Releases Wiki Activity

drm/amdgpu/gfx8: properly disable the KCQs in hw_fini

Browse Source 
Use the UNMAP_QUEUES packet to have the KIQ properly
disable them.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2017-03-30 13:06:32 -04:00
parent 3d7e30b381
commit 9d11ca9c09
1 changed files with 51 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

51
drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
View File

@ -4709,6 +4709,56 @@ static int gfx_v8_0_kiq_kcq_enable(struct amdgpu_device *adev)
return r;
}
static int gfx_v8_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 enable failed (scratch(0x%04X)=0x%08X)\n",
scratch, tmp);
r = -EINVAL;
}
amdgpu_gfx_scratch_free(adev, scratch);
return r;
}
static int gfx_v8_0_mqd_init(struct amdgpu_ring *ring)
{
struct amdgpu_device *adev = ring->adev;
@ -5150,6 +5200,7 @@ static int gfx_v8_0_hw_fini(void *handle)
pr_debug("For SRIOV client, shouldn't do anything.\n");
return 0;
}
gfx_v8_0_kiq_kcq_disable(adev);
gfx_v8_0_cp_enable(adev, false);
gfx_v8_0_rlc_stop(adev);