From: Peng Ju Zhou <PengJu.Zhou@amd.com>
Date: Fri, 23 Apr 2021 05:36:18 +0000 (+0800)
Subject: drm/amdgpu: Skip the program of GRBM_CAM* in SRIOV
X-Git-Tag: accepted/tizen/unified/20230118.172025~6864^2~23^2~96
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=e0972f8c21d2f1683329e7dddb45b0ed0a1b2fd9;p=platform%2Fkernel%2Flinux-rpi.git

drm/amdgpu: Skip the program of GRBM_CAM* in SRIOV

KMD should not the program these registers,
so skip them in the SRIOV environment.

Signed-off-by: Peng Ju Zhou <PengJu.Zhou@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
index 2408ed4..bee5791 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
@@ -7114,6 +7114,9 @@ static void gfx_v10_0_setup_grbm_cam_remapping(struct amdgpu_device *adev)
 {
 	uint32_t data;
 
+	if (amdgpu_sriov_vf(adev))
+		return;
+
 	/* initialize cam_index to 0
 	 * index will auto-inc after each data writting */
 	WREG32_SOC15(GC, 0, mmGRBM_CAM_INDEX, 0);