[PATCH 7/7] drm/amdgpu/nv: add PCI reset support

[Quan, Evan]

[AMD Official Use Only - Internal Distribution Only]

Series is acked-by: Evan Quan <evan.quan at amd.com>

-----Original Message-----
From: amd-gfx <amd-gfx-bounces at lists.freedesktop.org> On Behalf Of Alex Deucher
Sent: Friday, February 5, 2021 2:47 AM
To: amd-gfx at lists.freedesktop.org
Cc: Deucher, Alexander <Alexander.Deucher at amd.com>
Subject: [PATCH 7/7] drm/amdgpu/nv: add PCI reset support

Use generic PCI reset for GPU reset if the user specifies
PCI reset as the reset mechanism.  This should in general
only be used for validation.

Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/nv.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/nv.c b/drivers/gpu/drm/amd/amdgpu/nv.c
index e6878645df93..227e4a5db10e 100644
--- a/drivers/gpu/drm/amd/amdgpu/nv.c
+++ b/drivers/gpu/drm/amd/amdgpu/nv.c
@@ -564,7 +564,8 @@ nv_asic_reset_method(struct amdgpu_device *adev)

 if (amdgpu_reset_method == AMD_RESET_METHOD_MODE1 ||
     amdgpu_reset_method == AMD_RESET_METHOD_MODE2 ||
-    amdgpu_reset_method == AMD_RESET_METHOD_BACO)
+    amdgpu_reset_method == AMD_RESET_METHOD_BACO ||
+    amdgpu_reset_method == AMD_RESET_METHOD_PCI)
 return amdgpu_reset_method;

 if (amdgpu_reset_method != -1)
@@ -596,6 +597,10 @@ static int nv_asic_reset(struct amdgpu_device *adev)
 return 0;

 switch (nv_asic_reset_method(adev)) {
+case AMD_RESET_METHOD_PCI:
+dev_info(adev->dev, "PCI reset\n");
+ret = amdgpu_device_pci_reset(adev);
+break;
 case AMD_RESET_METHOD_BACO:
 dev_info(adev->dev, "BACO reset\n");

--
2.29.2

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