[PATCH 3/4] drm/amdgpu: enable mode1 reset

[Wenhui Sheng]

For sienna cichlid, add mode1 reset path for sGPU.

v2: hiding MP0/MP1 mode1 reset under AMD_RESET_METHOD_MODE1
v3: split emergency restart logic to a new patch

Signed-off-by: Likun Gao <Likun.Gao at amd.com>
Signed-off-by: Wenhui Sheng <Wenhui.Sheng at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/nv.c               | 19 ++++++++++++-------
 drivers/gpu/drm/amd/powerplay/navi10_ppt.c    |  2 +-
 .../drm/amd/powerplay/sienna_cichlid_ppt.c    |  2 +-
 3 files changed, 14 insertions(+), 9 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/nv.c b/drivers/gpu/drm/amd/amdgpu/nv.c
index 356849136d1d..9f1240bd0310 100644
--- a/drivers/gpu/drm/amd/amdgpu/nv.c
+++ b/drivers/gpu/drm/amd/amdgpu/nv.c
@@ -265,17 +265,21 @@ static int nv_asic_mode1_reset(struct amdgpu_device *adev)
 
 	amdgpu_atombios_scratch_regs_engine_hung(adev, true);
 
-	dev_info(adev->dev, "GPU mode1 reset\n");
-
 	/* disable BM */
 	pci_clear_master(adev->pdev);
 
 	pci_save_state(adev->pdev);
 
-	ret = psp_gpu_reset(adev);
+	if (amdgpu_dpm_is_mode1_reset_supported(adev)) {
+		dev_info(adev->dev, "GPU smu mode1 reset\n");
+		ret = amdgpu_dpm_mode1_reset(adev);
+	} else {
+		dev_info(adev->dev, "GPU psp mode1 reset\n");
+		ret = psp_gpu_reset(adev);
+	}
+
 	if (ret)
 		dev_err(adev->dev, "GPU mode1 reset failed\n");
-
 	pci_restore_state(adev->pdev);
 
 	/* wait for asic to come out of reset */
@@ -307,7 +311,7 @@ nv_asic_reset_method(struct amdgpu_device *adev)
 {
 	struct smu_context *smu = &adev->smu;
 
-	if (!amdgpu_sriov_vf(adev) && smu_baco_is_support(smu))
+	if (smu_baco_is_support(smu))
 		return AMD_RESET_METHOD_BACO;
 	else
 		return AMD_RESET_METHOD_MODE1;
@@ -319,15 +323,16 @@ static int nv_asic_reset(struct amdgpu_device *adev)
 	struct smu_context *smu = &adev->smu;
 
 	if (nv_asic_reset_method(adev) == AMD_RESET_METHOD_BACO) {
+		dev_info(adev->dev, "GPU BACO reset\n");
+
 		ret = smu_baco_enter(smu);
 		if (ret)
 			return ret;
 		ret = smu_baco_exit(smu);
 		if (ret)
 			return ret;
-	} else {
+	} else
 		ret = nv_asic_mode1_reset(adev);
-	}
 
 	return ret;
 }
diff --git a/drivers/gpu/drm/amd/powerplay/navi10_ppt.c b/drivers/gpu/drm/amd/powerplay/navi10_ppt.c
index 4f7d064e16e4..014815bcae93 100644
--- a/drivers/gpu/drm/amd/powerplay/navi10_ppt.c
+++ b/drivers/gpu/drm/amd/powerplay/navi10_ppt.c
@@ -2039,7 +2039,7 @@ static bool navi10_is_baco_supported(struct smu_context *smu)
 	struct amdgpu_device *adev = smu->adev;
 	uint32_t val;
 
-	if (!smu_v11_0_baco_is_support(smu))
+	if (amdgpu_sriov_vf(adev) || (!smu_v11_0_baco_is_support(smu)))
 		return false;
 
 	val = RREG32_SOC15(NBIO, 0, mmRCC_BIF_STRAP0);
diff --git a/drivers/gpu/drm/amd/powerplay/sienna_cichlid_ppt.c b/drivers/gpu/drm/amd/powerplay/sienna_cichlid_ppt.c
index cd8590aac85d..1949ec3e6b83 100644
--- a/drivers/gpu/drm/amd/powerplay/sienna_cichlid_ppt.c
+++ b/drivers/gpu/drm/amd/powerplay/sienna_cichlid_ppt.c
@@ -1761,7 +1761,7 @@ static bool sienna_cichlid_is_baco_supported(struct smu_context *smu)
 	struct amdgpu_device *adev = smu->adev;
 	uint32_t val;
 
-	if (!smu_v11_0_baco_is_support(smu))
+	if (amdgpu_sriov_vf(adev) || (!smu_v11_0_baco_is_support(smu)))
 		return false;
 
 	val = RREG32_SOC15(NBIO, 0, mmRCC_BIF_STRAP0);
-- 
2.17.1