[PATCH] drm/amdgpu: Do not program IH_CHICKEN in vega20_ih.c under SRIOV

[Victor Lu]

IH_CHICKEN is blocked for VF writes; this access should be skipped.

Signed-off-by: Victor Lu <victorchengchi...@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/vega20_ih.c | 38 ++++++++++++++------------
 1 file changed, 20 insertions(+), 18 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/vega20_ih.c 
b/drivers/gpu/drm/amd/amdgpu/vega20_ih.c
index db66e6cccaf2..b9e785846637 100644
--- a/drivers/gpu/drm/amd/amdgpu/vega20_ih.c
+++ b/drivers/gpu/drm/amd/amdgpu/vega20_ih.c
@@ -291,27 +291,29 @@ static int vega20_ih_irq_init(struct amdgpu_device *adev)
 
        adev->nbio.funcs->ih_control(adev);
 
-       if ((amdgpu_ip_version(adev, OSSSYS_HWIP, 0) == IP_VERSION(4, 2, 1)) &&
-           adev->firmware.load_type == AMDGPU_FW_LOAD_DIRECT) {
-               ih_chicken = RREG32_SOC15(OSSSYS, 0, mmIH_CHICKEN);
-               if (adev->irq.ih.use_bus_addr) {
-                       ih_chicken = REG_SET_FIELD(ih_chicken, IH_CHICKEN,
-                                                  MC_SPACE_GPA_ENABLE, 1);
+       if (!amdgpu_sriov_vf(adev)) {
+               if ((amdgpu_ip_version(adev, OSSSYS_HWIP, 0) == IP_VERSION(4, 
2, 1)) &&
+                   adev->firmware.load_type == AMDGPU_FW_LOAD_DIRECT) {
+                       ih_chicken = RREG32_SOC15(OSSSYS, 0, mmIH_CHICKEN);
+                       if (adev->irq.ih.use_bus_addr) {
+                               ih_chicken = REG_SET_FIELD(ih_chicken, 
IH_CHICKEN,
+                                                          MC_SPACE_GPA_ENABLE, 
1);
+                       }
+                       WREG32_SOC15(OSSSYS, 0, mmIH_CHICKEN, ih_chicken);
                }
-               WREG32_SOC15(OSSSYS, 0, mmIH_CHICKEN, ih_chicken);
-       }
 
-       /* psp firmware won't program IH_CHICKEN for aldebaran
-        * driver needs to program it properly according to
-        * MC_SPACE type in IH_RB_CNTL */
-       if ((amdgpu_ip_version(adev, OSSSYS_HWIP, 0) == IP_VERSION(4, 4, 0)) ||
-           (amdgpu_ip_version(adev, OSSSYS_HWIP, 0) == IP_VERSION(4, 4, 2))) {
-               ih_chicken = RREG32_SOC15(OSSSYS, 0, mmIH_CHICKEN_ALDEBARAN);
-               if (adev->irq.ih.use_bus_addr) {
-                       ih_chicken = REG_SET_FIELD(ih_chicken, IH_CHICKEN,
-                                                  MC_SPACE_GPA_ENABLE, 1);
+               /* psp firmware won't program IH_CHICKEN for aldebaran
+                * driver needs to program it properly according to
+                * MC_SPACE type in IH_RB_CNTL */
+               if ((amdgpu_ip_version(adev, OSSSYS_HWIP, 0) == IP_VERSION(4, 
4, 0)) ||
+                   (amdgpu_ip_version(adev, OSSSYS_HWIP, 0) == IP_VERSION(4, 
4, 2))) {
+                       ih_chicken = RREG32_SOC15(OSSSYS, 0, 
mmIH_CHICKEN_ALDEBARAN);
+                       if (adev->irq.ih.use_bus_addr) {
+                               ih_chicken = REG_SET_FIELD(ih_chicken, 
IH_CHICKEN,
+                                                          MC_SPACE_GPA_ENABLE, 
1);
+                       }
+                       WREG32_SOC15(OSSSYS, 0, mmIH_CHICKEN_ALDEBARAN, 
ih_chicken);
                }
-               WREG32_SOC15(OSSSYS, 0, mmIH_CHICKEN_ALDEBARAN, ih_chicken);
        }
 
        for (i = 0; i < ARRAY_SIZE(ih); i++) {
-- 
2.34.1