drm/amdgpu: Fix HDP flush for VFs on nbio v7.9

From Lijo Lazar
c19453cc16ad5d90f9ed40686203103e57085580 in linux-6.6.y/6.6.19
534c8a5b9d5d41d30cdcac93cfa1bca5e17be009 in mainline linux

diff --git a/sys/dev/pci/drm/amd/amdgpu/nbio_v7_9.c b/sys/dev/pci/drm/amd/amdgpu/nbio_v7_9.c
index 48effaa..4fd03d4 100644 (file)
--- a/sys/dev/pci/drm/amd/amdgpu/nbio_v7_9.c
+++ b/sys/dev/pci/drm/amd/amdgpu/nbio_v7_9.c
@@ -426,6 +426,12 @@ static void nbio_v7_9_init_registers(struct amdgpu_device *adev)
        u32 inst_mask;
        int i;
 
+       if (amdgpu_sriov_vf(adev))
+               adev->rmmio_remap.reg_offset =
+                       SOC15_REG_OFFSET(
+                               NBIO, 0,
+                               regBIF_BX_DEV0_EPF0_VF0_HDP_MEM_COHERENCY_FLUSH_CNTL)
+                       << 2;
        WREG32_SOC15(NBIO, 0, regXCC_DOORBELL_FENCE,
                0xff & ~(adev->gfx.xcc_mask));