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authorAlex Deucher <alexander.deucher@amd.com>2021-02-04 10:29:19 -0500
committerAlex Deucher <alexander.deucher@amd.com>2021-02-09 15:29:54 -0500
commitaf484df800e356725c39f52e7cbe8b47f1753453 (patch)
tree9d4160e7b9dc105c77c9a5f88da0d9bd7d48980a
parentd5ab066917a5438459e5464fd17432685a2aedc7 (diff)
downloadlinux-af484df800e356725c39f52e7cbe8b47f1753453.tar.bz2
drm/amdgpu: add generic pci reset as an option
This allows us to use generic PCI reset mechanisms (FLR, SBR) as a reset mechanism to verify that the generic PCI reset mechanisms are working properly. Acked-by: Evan Quan <evan.quan@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
-rw-r--r--drivers/gpu/drm/amd/amdgpu/amdgpu.h4
-rw-r--r--drivers/gpu/drm/amd/amdgpu/amdgpu_device.c12
-rw-r--r--drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c4
3 files changed, 17 insertions, 3 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index dbf8c8a0878c..9717cb43eb26 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -579,7 +579,8 @@ enum amd_reset_method {
AMD_RESET_METHOD_MODE0,
AMD_RESET_METHOD_MODE1,
AMD_RESET_METHOD_MODE2,
- AMD_RESET_METHOD_BACO
+ AMD_RESET_METHOD_BACO,
+ AMD_RESET_METHOD_PCI,
};
/*
@@ -1228,6 +1229,7 @@ bool amdgpu_device_should_recover_gpu(struct amdgpu_device *adev);
int amdgpu_device_gpu_recover(struct amdgpu_device *adev,
struct amdgpu_job* job);
void amdgpu_device_pci_config_reset(struct amdgpu_device *adev);
+int amdgpu_device_pci_reset(struct amdgpu_device *adev);
bool amdgpu_device_need_post(struct amdgpu_device *adev);
void amdgpu_cs_report_moved_bytes(struct amdgpu_device *adev, u64 num_bytes,
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 51bea409e513..e6a72a7fc311 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -929,6 +929,18 @@ void amdgpu_device_pci_config_reset(struct amdgpu_device *adev)
pci_write_config_dword(adev->pdev, 0x7c, AMDGPU_ASIC_RESET_DATA);
}
+/**
+ * amdgpu_device_pci_reset - reset the GPU using generic PCI means
+ *
+ * @adev: amdgpu_device pointer
+ *
+ * Resets the GPU using generic pci reset interfaces (FLR, SBR, etc.).
+ */
+int amdgpu_device_pci_reset(struct amdgpu_device *adev)
+{
+ return pci_reset_function(adev->pdev);
+}
+
/*
* GPU doorbell aperture helpers function.
*/
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
index 9173da34dd22..80c46f648d5c 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
@@ -793,9 +793,9 @@ module_param_named(tmz, amdgpu_tmz, int, 0444);
/**
* DOC: reset_method (int)
- * GPU reset method (-1 = auto (default), 0 = legacy, 1 = mode0, 2 = mode1, 3 = mode2, 4 = baco)
+ * GPU reset method (-1 = auto (default), 0 = legacy, 1 = mode0, 2 = mode1, 3 = mode2, 4 = baco, 5 = pci)
*/
-MODULE_PARM_DESC(reset_method, "GPU reset method (-1 = auto (default), 0 = legacy, 1 = mode0, 2 = mode1, 3 = mode2, 4 = baco/bamaco)");
+MODULE_PARM_DESC(reset_method, "GPU reset method (-1 = auto (default), 0 = legacy, 1 = mode0, 2 = mode1, 3 = mode2, 4 = baco/bamaco, 5 = pci)");
module_param_named(reset_method, amdgpu_reset_method, int, 0444);
/**