From 4310acd4464bc6aed0d211d94b1d343ea3cb62f8 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Tue, 18 Feb 2025 13:06:19 -0500 Subject: [PATCH 3136/5403] drm/amdgpu: add ring flag for no user submissions 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. v2: fix error code (Alex) Reviewed-by: Sunil Khatri Signed-off-by: Alex Deucher --- 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 82df06a72ee0..ea047305eb64 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 queues are disabled */ + if (ring->no_user_submission) + return -EINVAL; + /* 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 b64a21773230..4fb174863a80 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 615c3d5c5a8d..ec4de8df34e7 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; @@ -305,7 +306,6 @@ 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))) -- 2.54.0