[AMD Official Use Only - General]
Please ignore this patch as tOS is not loaded on VF and hence the path is not taken.
Thanks,
Lijo
-----Original Message-----
From: amd-gfx <amd-gfx-bounces@xxxxxxxxxxxxxxxxxxxxx> On Behalf Of Lijo Lazar
Sent: Thursday, October 12, 2023 11:21 AM
To: amd-gfx@xxxxxxxxxxxxxxxxxxxxx
Cc: Deucher, Alexander <Alexander.Deucher@xxxxxxx>; Zhang, Hawking <Hawking.Zhang@xxxxxxx>
Subject: [PATCH] drm/amdgpu: Restrict PSP OS version read to PF
Only physical function can read PSP OS version register on PSP v13.x SOCs.
Signed-off-by: Lijo Lazar <lijo.lazar@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/psp_v13_0.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/psp_v13_0.c b/drivers/gpu/drm/amd/amdgpu/psp_v13_0.c
index 1997260a8156..96ea64e1bf37 100644
--- a/drivers/gpu/drm/amd/amdgpu/psp_v13_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/psp_v13_0.c
@@ -280,6 +280,9 @@ static inline void psp_v13_0_init_sos_version(struct psp_context *psp) {
struct amdgpu_device *adev = psp->adev;
+ if (amdgpu_sriov_vf(adev))
+ return;
+
psp->sos.fw_version = RREG32_SOC15(MP0, 0, regMP0_SMN_C2PMSG_58); }
--
2.25.1
