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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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9
drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
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@@ -32,7 +32,6 @@
#include <drm/drm_pciids.h>
#include <linux/console.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/pm_runtime.h>
#include <linux/vga_switcheroo.h>
#include <drm/drm_probe_helper.h>
@@ -1528,6 +1527,13 @@ static struct drm_driver kms_driver = {
.patchlevel = KMS_DRIVER_PATCHLEVEL,
};
static struct pci_error_handlers amdgpu_pci_err_handler = {
.error_detected = amdgpu_pci_error_detected,
.mmio_enabled = amdgpu_pci_mmio_enabled,
.slot_reset = amdgpu_pci_slot_reset,
.resume = amdgpu_pci_resume,
};
static struct pci_driver amdgpu_kms_pci_driver = {
.name = DRIVER_NAME,
.id_table = pciidlist,
@@ -1535,6 +1541,7 @@ static struct pci_driver amdgpu_kms_pci_driver = {
.remove = amdgpu_pci_remove,
.shutdown = amdgpu_pci_shutdown,
.driver.pm = &amdgpu_pm_ops,
.err_handler = &amdgpu_pci_err_handler,
};
static int __init amdgpu_init(void)