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drm/amdgpu: Implement DPC recovery

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Add PCI Downstream Port Containment (DPC) with
basic recovery functionality

v2: remove pci_save_state to avoid breaking suspend/resume
v3: Fix style comments
v4: Improve description.

Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Andrey Grodzovsky
2020-07-29 12:59:45 -04:00
committed by Alex Deucher
parent 2a9787dcf5
commit c9a6b82f45
3 changed files with 177 additions and 1 deletions
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8
drivers/gpu/drm/amd/amdgpu/amdgpu.h
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@@ -49,6 +49,8 @@
#include <linux/rbtree.h>
#include <linux/hashtable.h>
#include <linux/dma-fence.h>
#include <linux/pci.h>
#include <linux/aer.h>
#include <drm/ttm/ttm_bo_api.h>
#include <drm/ttm/ttm_bo_driver.h>
@@ -1260,6 +1262,12 @@ static inline int amdgpu_dm_display_resume(struct amdgpu_device *adev) { return
void amdgpu_register_gpu_instance(struct amdgpu_device *adev);
void amdgpu_unregister_gpu_instance(struct amdgpu_device *adev);
pci_ers_result_t amdgpu_pci_error_detected(struct pci_dev *pdev,
pci_channel_state_t state);
pci_ers_result_t amdgpu_pci_mmio_enabled(struct pci_dev *pdev);
pci_ers_result_t amdgpu_pci_slot_reset(struct pci_dev *pdev);
void amdgpu_pci_resume(struct pci_dev *pdev);
#include "amdgpu_object.h"
/* used by df_v3_6.c and amdgpu_pmu.c */