[PATCH 1/3] drm/amdgpu: cleanup some incorrect reg access for SRIOV

[Zhang, Hawking]

[AMD Official Use Only - Internal Distribution Only]

Please remove the ticket number from the commit description. With that fixed, the patch is

Reviewed-by: Hawking Zhang <Hawking.Zhang at amd.com>

Regards,
Hawking
-----Original Message-----
From: amd-gfx <amd-gfx-bounces at lists.freedesktop.org> On Behalf Of Monk Liu
Sent: Tuesday, February 18, 2020 10:54
To: amd-gfx at lists.freedesktop.org
Cc: Liu, Monk <Monk.Liu at amd.com>
Subject: [PATCH 1/3] drm/amdgpu: cleanup some incorrect reg access for SRIOV

SWDEV-220810 - some register access from VF is wrong

1)
we shouldn't load PSP kdb and sys/sos for VF, they are supposed to be handled by hypervisor

2)
ih reroute doesn't work on VF thus we should avoid calling it, besides VF should not use those PSP register sets for PF

3)
shouldn't load SMU ucode under SRIOV, otherwise PSP would report error

Signed-off-by: Monk Liu <Monk.Liu at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c | 4 ++--  drivers/gpu/drm/amd/amdgpu/psp_v11_0.c  | 3 ++-
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
index a16c810..3494966 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
@@ -1081,7 +1081,7 @@ static int psp_hw_start(struct psp_context *psp)
 	struct amdgpu_device *adev = psp->adev;
 	int ret;
 
-	if (!amdgpu_sriov_vf(adev) || !adev->in_gpu_reset) {
+	if (!amdgpu_sriov_vf(adev) && !adev->in_gpu_reset) {
 		if (psp->kdb_bin_size &&
 		    (psp->funcs->bootloader_load_kdb != NULL)) {
 			ret = psp_bootloader_load_kdb(psp);
@@ -1318,7 +1318,7 @@ static int psp_np_fw_load(struct psp_context *psp)
 
 	if (psp->autoload_supported) {
 		ucode = &adev->firmware.ucode[AMDGPU_UCODE_ID_SMC];
-		if (!ucode->fw)
+		if (!ucode->fw || amdgpu_sriov_vf(adev))
 			goto out;
 
 		ret = psp_execute_np_fw_load(psp, ucode); diff --git a/drivers/gpu/drm/amd/amdgpu/psp_v11_0.c b/drivers/gpu/drm/amd/amdgpu/psp_v11_0.c
index 0829188..8ab3bf3 100644
--- a/drivers/gpu/drm/amd/amdgpu/psp_v11_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/psp_v11_0.c
@@ -420,7 +420,8 @@ static int psp_v11_0_ring_init(struct psp_context *psp,
 	struct psp_ring *ring;
 	struct amdgpu_device *adev = psp->adev;
 
-	psp_v11_0_reroute_ih(psp);
+	if (!amdgpu_sriov_vf(adev))
+		psp_v11_0_reroute_ih(psp);
 
 	ring = &psp->km_ring;
 
--
2.7.4

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