[PATCH] drm/amdgpu/sriov: Enable the mcbp parameter for sriov

Liu, Monk Monk.Liu at amd.com
Mon Sep 21 08:02:00 UTC 2020


[AMD Official Use Only - Internal Distribution Only]

Looks you missed many places, e.g.:

866     if (amdgpu_mcbp || amdgpu_sriov_vf(adev)) {
   867         bo_va = fpriv->csa_va;
   868         BUG_ON(!bo_va);
   869         r = amdgpu_vm_bo_update(adev, bo_va, false);
   870         if (r)
   871             return r;
   872
   873         r = amdgpu_sync_vm_fence(&p->job->sync, bo_va->last_pt_update);
   874         if (r)
   875             return r;
   876     }


   949         if (chunk_ib->ip_type == AMDGPU_HW_IP_GFX &&
   950             (amdgpu_mcbp || amdgpu_sriov_vf(adev))) {
   951             if (chunk_ib->flags & AMDGPU_IB_FLAG_PREEMPT) {
   952                 if (chunk_ib->flags & AMDGPU_IB_FLAG_CE)
   953                     ce_preempt++;
   954                 else
   955                     de_preempt++;
   956             }
   957
   958             /* each GFX command submit allows 0 or 1 IB preemptible for CE & DE */
   959             if (ce_preempt > 1 || de_preempt > 1)
   960                 return -EINVAL;
   961         }


  2029             r = amdgpu_device_wb_init(adev);
  2030             if (r) {
  2031                 DRM_ERROR("amdgpu_device_wb_init failed %d\n", r);
  2032                 goto init_failed;
  2033             }
  2034             adev->ip_blocks[i].status.hw = true;
  2035
  2036             /* right after GMC hw init, we create CSA */
  2037             if (amdgpu_mcbp || amdgpu_sriov_vf(adev)) {
  2038                 r = amdgpu_allocate_static_csa(adev, &adev->virt.csa_obj,
  2039                                 AMDGPU_GEM_DOMAIN_VRAM,
  2040                                 AMDGPU_CSA_SIZE);
  2041                 if (r) {
  2042                     DRM_ERROR("allocate CSA failed %d\n", r);
  2043                     goto init_failed;
  2044                 }
  2045             }
  2046         }
  2047     }


  4587     if ((amdgpu_sriov_vf(ring->adev) || amdgpu_mcbp) && (ib->flags & AMDGPU_IB_FLAG_PREEMPT)) {
  4588         control |= INDIRECT_BUFFER_PRE_ENB(1);
  4589
  4590         if (flags & AMDGPU_IB_PREEMPTED)
  4591             control |= INDIRECT_BUFFER_PRE_RESUME(1);
  4592
  4593         if (!(ib->flags & AMDGPU_IB_FLAG_CE) && vmid)
  4594             gfx_v10_0_ring_emit_de_meta(ring,
  4595                     (!amdgpu_sriov_vf(ring->adev) && flags & AMDGPU_IB_PREEMPTED) ? true : false);
  4596     }



  4742 static void gfx_v10_0_ring_emit_cntxcntl(struct amdgpu_ring *ring,
  4743                      uint32_t flags)
  4744 {
  4745     uint32_t dw2 = 0;
  4746
  4747     if (amdgpu_mcbp || amdgpu_sriov_vf(ring->adev))
  4748         gfx_v10_0_ring_emit_ce_meta(ring,
  4749                     (!amdgpu_sriov_vf(ring->adev) && flags & AMDGPU_IB_PREEMPTED) ? true : false);
  4750
  4751     dw2 |= 0x80000000; /* set load_enable otherwise this package is just NOPs */
  4752     if (flags & AMDGPU_HAVE_CTX_SWITCH) {

72
 73     /* don't enable OS preemption on SDMA under SRIOV */
 74     if (amdgpu_sriov_vf(adev) || vmid == 0 || !amdgpu_mcbp)
 75         return 0;
 76
 77     r = amdgpu_sdma_get_index_from_ring(ring, &index);
 78
 79     if (r || index > 31)
 80         csa_mc_addr = 0;


You need to change all the place  refer to "amdgpu_mcbp", and remove the condition of " || amdgpu_srvio_vf()"

_____________________________________
Monk Liu|GPU Virtualization Team |AMD


-----Original Message-----
From: amd-gfx <amd-gfx-bounces at lists.freedesktop.org> On Behalf Of Emily.Deng
Sent: Monday, September 21, 2020 3:55 PM
To: amd-gfx at lists.freedesktop.org
Cc: Deng, Emily <Emily.Deng at amd.com>
Subject: [PATCH] drm/amdgpu/sriov: Enable the mcbp parameter for sriov

For debug convenient, reuse mcbp parameter for sriov mcbp

Signed-off-by: Emily.Deng <Emily.Deng at amd.com>
Change-Id: If1222b2c050376feefb8fed4be58b4b87d36bd77
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 9 ++++++---
 drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c    | 5 +++--
 drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c     | 3 ++-
 3 files changed, 11 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 5c2eb46e9b71..fcb6a41594db 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -3197,15 +3197,18 @@ int amdgpu_device_init(struct amdgpu_device *adev,

 amdgpu_device_get_pcie_info(adev);

-if (amdgpu_mcbp)
-DRM_INFO("MCBP is enabled\n");
-
 if (amdgpu_mes && adev->asic_type >= CHIP_NAVI10)
 adev->enable_mes = true;

 /* detect hw virtualization here */
 amdgpu_detect_virtualization(adev);

+if (amdgpu_mcbp == -1)
+amdgpu_mcbp = amdgpu_sriov_vf(adev) ? 1 : 0;
+
+if (amdgpu_mcbp)
+DRM_INFO("MCBP is enabled\n");
+
 r = amdgpu_device_get_job_timeout_settings(adev);
 if (r) {
 dev_err(adev->dev, "invalid lockup_timeout parameter syntax\n"); diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
index 8d658d2a16fe..976d4f8ee2f1 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
@@ -144,7 +144,7 @@ uint amdgpu_smu_memory_pool_size = 0;  uint amdgpu_dc_feature_mask = 0;  uint amdgpu_dc_debug_mask = 0;  int amdgpu_async_gfx_ring = 1; -int amdgpu_mcbp = 0;
+int amdgpu_mcbp = -1;
 int amdgpu_discovery = -1;
 int amdgpu_mes = 0;
 int amdgpu_noretry;
@@ -575,9 +575,10 @@ module_param_named(async_gfx_ring, amdgpu_async_gfx_ring, int, 0444);
  * It is used to enable mid command buffer preemption. (0 = disabled (default), 1 = enabled)
  */
 MODULE_PARM_DESC(mcbp,
-"Enable Mid-command buffer preemption (0 = disabled (default), 1 = enabled)");
+"Enable Mid-command buffer preemption (-1 = auto (default), 0 =
+disabled, 1 = enabled)");
 module_param_named(mcbp, amdgpu_mcbp, int, 0444);

+
 /**
  * DOC: discovery (int)
  * Allow driver to discover hardware IP information from IP Discovery table at the top of VRAM.
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
index 2f53fa0ae9a6..cffa45a9481d 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
@@ -236,7 +236,8 @@ int amdgpu_ib_schedule(struct amdgpu_ring *ring, unsigned num_ibs,

 for (i = 0; i < num_ibs; ++i) {
 ib = &ibs[i];
-
+if (!amdgpu_mcbp)
+ib->flags &= ~AMDGPU_IB_FLAG_PREEMPT;
 /* drop preamble IBs if we don't have a context switch */
 if ((ib->flags & AMDGPU_IB_FLAG_PREAMBLE) &&
     skip_preamble &&
--
2.25.1

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