On 3/6/2025 2:17 AM, Alex Deucher wrote:
This would be set by IPs which only accept submissions
from the kernel, not userspace, such as when kernel
queues are disabled. Don't expose the rings to userspace
and reject any submissions in the CS IOCTL.
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c | 4 ++++
drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | 30 ++++++++++++++++--------
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h | 2 +-
3 files changed, 25 insertions(+), 11 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
index 5df21529b3b13..5cc18034b75df 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
@@ -349,6 +349,10 @@ static int amdgpu_cs_p2_ib(struct amdgpu_cs_parser *p,
ring = amdgpu_job_ring(job);
ib = &job->ibs[job->num_ibs++];
+ /* submissions to kernel queus are disabled */
+ if (ring->no_user_submission)
+ return -EINVAL;
+
Alex, dont we need to disable submission for other type of chunks, from
function amdgpu_cs_pass2 ? chunk type of bo list and fences are
submitted by users and we do want to handle that too.
If that's not needed then lgtm.
/* MM engine doesn't support user fences */
if (p->uf_bo && ring->funcs->no_user_fence)
return -EINVAL;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
index cd6eb7a3bc58a..3b7dfd56ccd0e 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
@@ -408,7 +408,8 @@ static int amdgpu_hw_ip_info(struct amdgpu_device *adev,
case AMDGPU_HW_IP_GFX:
type = AMD_IP_BLOCK_TYPE_GFX;
for (i = 0; i < adev->gfx.num_gfx_rings; i++)
- if (adev->gfx.gfx_ring[i].sched.ready)
+ if (adev->gfx.gfx_ring[i].sched.ready &&
+ !adev->gfx.gfx_ring[i].no_user_submission)
++num_rings;
ib_start_alignment = 32;
ib_size_alignment = 32;
@@ -416,7 +417,8 @@ static int amdgpu_hw_ip_info(struct amdgpu_device *adev,
case AMDGPU_HW_IP_COMPUTE:
type = AMD_IP_BLOCK_TYPE_GFX;
for (i = 0; i < adev->gfx.num_compute_rings; i++)
- if (adev->gfx.compute_ring[i].sched.ready)
+ if (adev->gfx.compute_ring[i].sched.ready &&
+ !adev->gfx.compute_ring[i].no_user_submission)
++num_rings;
ib_start_alignment = 32;
ib_size_alignment = 32;
@@ -424,7 +426,8 @@ static int amdgpu_hw_ip_info(struct amdgpu_device *adev,
case AMDGPU_HW_IP_DMA:
type = AMD_IP_BLOCK_TYPE_SDMA;
for (i = 0; i < adev->sdma.num_instances; i++)
- if (adev->sdma.instance[i].ring.sched.ready)
+ if (adev->sdma.instance[i].ring.sched.ready &&
+ !adev->gfx.gfx_ring[i].no_user_submission)
++num_rings;
ib_start_alignment = 256;
ib_size_alignment = 4;
@@ -435,7 +438,8 @@ static int amdgpu_hw_ip_info(struct amdgpu_device *adev,
if (adev->uvd.harvest_config & (1 << i))
continue;
- if (adev->uvd.inst[i].ring.sched.ready)
+ if (adev->uvd.inst[i].ring.sched.ready &&
+ !adev->uvd.inst[i].ring.no_user_submission)
++num_rings;
}
ib_start_alignment = 256;
@@ -444,7 +448,8 @@ static int amdgpu_hw_ip_info(struct amdgpu_device *adev,
case AMDGPU_HW_IP_VCE:
type = AMD_IP_BLOCK_TYPE_VCE;
for (i = 0; i < adev->vce.num_rings; i++)
- if (adev->vce.ring[i].sched.ready)
+ if (adev->vce.ring[i].sched.ready &&
+ !adev->vce.ring[i].no_user_submission)
++num_rings;
ib_start_alignment = 256;
ib_size_alignment = 4;
@@ -456,7 +461,8 @@ static int amdgpu_hw_ip_info(struct amdgpu_device *adev,
continue;
for (j = 0; j < adev->uvd.num_enc_rings; j++)
- if (adev->uvd.inst[i].ring_enc[j].sched.ready)
+ if (adev->uvd.inst[i].ring_enc[j].sched.ready &&
+ !adev->uvd.inst[i].ring_enc[j].no_user_submission)
++num_rings;
}
ib_start_alignment = 256;
@@ -468,7 +474,8 @@ static int amdgpu_hw_ip_info(struct amdgpu_device *adev,
if (adev->vcn.harvest_config & (1 << i))
continue;
- if (adev->vcn.inst[i].ring_dec.sched.ready)
+ if (adev->vcn.inst[i].ring_dec.sched.ready &&
+ !adev->vcn.inst[i].ring_dec.no_user_submission)
++num_rings;
}
ib_start_alignment = 256;
@@ -481,7 +488,8 @@ static int amdgpu_hw_ip_info(struct amdgpu_device *adev,
continue;
for (j = 0; j < adev->vcn.inst[i].num_enc_rings; j++)
- if (adev->vcn.inst[i].ring_enc[j].sched.ready)
+ if (adev->vcn.inst[i].ring_enc[j].sched.ready &&
+ !adev->vcn.inst[i].ring_enc[j].no_user_submission)
++num_rings;
}
ib_start_alignment = 256;
@@ -496,7 +504,8 @@ static int amdgpu_hw_ip_info(struct amdgpu_device *adev,
continue;
for (j = 0; j < adev->jpeg.num_jpeg_rings; j++)
- if (adev->jpeg.inst[i].ring_dec[j].sched.ready)
+ if (adev->jpeg.inst[i].ring_dec[j].sched.ready &&
+ !adev->jpeg.inst[i].ring_dec[j].no_user_submission)
++num_rings;
}
ib_start_alignment = 256;
@@ -504,7 +513,8 @@ static int amdgpu_hw_ip_info(struct amdgpu_device *adev,
break;
case AMDGPU_HW_IP_VPE:
type = AMD_IP_BLOCK_TYPE_VPE;
- if (adev->vpe.ring.sched.ready)
+ if (adev->vpe.ring.sched.ready &&
+ !adev->vpe.ring.no_user_submission)
++num_rings;
ib_start_alignment = 256;
ib_size_alignment = 4;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
index b4fd1e17205e9..4a97afcb38b78 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
@@ -297,6 +297,7 @@ struct amdgpu_ring {
struct dma_fence *vmid_wait;
bool has_compute_vm_bug;
bool no_scheduler;
+ bool no_user_submission;
int hw_prio;
unsigned num_hw_submission;
atomic_t *sched_score;
@@ -310,7 +311,6 @@ struct amdgpu_ring {
unsigned int entry_index;
/* store the cached rptr to restore after reset */
uint64_t cached_rptr;
-
};
#define amdgpu_ring_parse_cs(r, p, job, ib) ((r)->funcs->parse_cs((p), (job), (ib)))
