From: Victor Lu Date: Thu, 13 Feb 2025 23:41:26 +0000 (-0500) Subject: drm/amdgpu: Do not write to GRBM_CNTL if Aldebaran SRIOV X-Git-Url: http://git.monstr.eu/?a=commitdiff_plain;h=3646cc65e2747ff112d7de1a05a2e756414b771e;p=linux-2.6-microblaze.git drm/amdgpu: Do not write to GRBM_CNTL if Aldebaran SRIOV Aldebaran SRIOV VF does not have write permissions to GRBM_CTNL. This access can be skipped to avoid a dmesg warning. v2: Use GC IP version check instead of asic check Signed-off-by: Victor Lu Acked-by: Alex Deucher Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c index f7938d318f26..1f0f03108a82 100644 --- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c @@ -2637,7 +2637,10 @@ static void gfx_v9_0_constants_init(struct amdgpu_device *adev) u32 tmp; int i; - WREG32_FIELD15_RLC(GC, 0, GRBM_CNTL, READ_TIMEOUT, 0xff); + if (!amdgpu_sriov_vf(adev) || + amdgpu_ip_version(adev, GC_HWIP, 0) != IP_VERSION(9, 4, 2)) { + WREG32_FIELD15_RLC(GC, 0, GRBM_CNTL, READ_TIMEOUT, 0xff); + } gfx_v9_0_tiling_mode_table_init(adev);