Why are the ring 1&2 enabled on SRIOV in the first place?

Christian.

Am 07.06.21 um 16:23 schrieb Rohit Khaire:
This is similar to IH_RB_CNTL programming in
navi10_ih_toggle_ring_interrupts

Signed-off-by: Rohit Khaire <rohit.kha...@amd.com>
---
  drivers/gpu/drm/amd/amdgpu/navi10_ih.c | 20 ++++++++++++++++++--
  1 file changed, 18 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/navi10_ih.c 
b/drivers/gpu/drm/amd/amdgpu/navi10_ih.c
index eac564e8dd52..e41188c04846 100644
--- a/drivers/gpu/drm/amd/amdgpu/navi10_ih.c
+++ b/drivers/gpu/drm/amd/amdgpu/navi10_ih.c
@@ -120,11 +120,27 @@ force_update_wptr_for_self_int(struct amdgpu_device *adev,
        ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL_RING1,
                                   RB_USED_INT_THRESHOLD, threshold);
- WREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING1, ih_rb_cntl);
+       if (amdgpu_sriov_vf(adev) && amdgpu_sriov_reg_indirect_ih(adev)) {
+               if (psp_reg_program(&adev->psp, PSP_REG_IH_RB_CNTL_RING1, 
ih_rb_cntl)) {
+                       DRM_ERROR("PSP program IH_RB_CNTL_RING1 failed!\n");
+                       return;
+               }
+       } else {
+               WREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING1, ih_rb_cntl);
+       }
+
        ih_rb_cntl = RREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING2);
        ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL_RING2,
                                   RB_USED_INT_THRESHOLD, threshold);
-       WREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING2, ih_rb_cntl);
+       if (amdgpu_sriov_vf(adev) && amdgpu_sriov_reg_indirect_ih(adev)) {
+               if (psp_reg_program(&adev->psp, PSP_REG_IH_RB_CNTL_RING2, 
ih_rb_cntl)) {
+                       DRM_ERROR("PSP program IH_RB_CNTL_RING2 failed!\n");
+                       return;
+               }
+       } else {
+               WREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING2, ih_rb_cntl);
+       }
+
        WREG32_SOC15(OSSSYS, 0, mmIH_CNTL2, ih_cntl);
  }

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