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charset="us-ascii"; Format="flowed" Errors-To: amd-gfx-bounces@lists.freedesktop.org Sender: "amd-gfx" On 8/28/20 3:23 PM, Alex Deucher wrote: > On Fri, Aug 28, 2020 at 12:06 PM Andrey Grodzovsky > wrote: >> Add DPC handlers with basic recovery functionality. >> >> v2: remove pci_save_state to avoid breaking suspend/resume >> >> Signed-off-by: Andrey Grodzovsky >> --- >> drivers/gpu/drm/amd/amdgpu/amdgpu.h | 9 ++ >> drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 169 ++++++++++++++++++++++++++++- >> drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 9 +- >> 3 files changed, 184 insertions(+), 3 deletions(-) >> >> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h >> index 49ea9fa..3399242 100644 >> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h >> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h >> @@ -49,6 +49,8 @@ >> #include >> #include >> #include >> +#include >> +#include >> >> #include >> #include >> @@ -1263,6 +1265,13 @@ 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 */ >> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c >> index 5a948ed..937f8b0 100644 >> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c >> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c >> @@ -350,7 +350,8 @@ uint32_t amdgpu_mm_rreg(struct amdgpu_device *adev, uint32_t reg, >> * >> * Returns the 8 bit value from the offset specified. >> */ >> -uint8_t amdgpu_mm_rreg8(struct amdgpu_device *adev, uint32_t offset) { >> +uint8_t amdgpu_mm_rreg8(struct amdgpu_device *adev, uint32_t offset) >> +{ >> if (offset < adev->rmmio_size) >> return (readb(adev->rmmio + offset)); >> BUG(); >> @@ -371,7 +372,8 @@ uint8_t amdgpu_mm_rreg8(struct amdgpu_device *adev, uint32_t offset) { >> * >> * Writes the value specified to the offset specified. >> */ >> -void amdgpu_mm_wreg8(struct amdgpu_device *adev, uint32_t offset, uint8_t value) { >> +void amdgpu_mm_wreg8(struct amdgpu_device *adev, uint32_t offset, uint8_t value) >> +{ >> if (offset < adev->rmmio_size) >> writeb(value, adev->rmmio + offset); >> else >> @@ -2989,6 +2991,7 @@ static const struct attribute *amdgpu_dev_attributes[] = { >> NULL >> }; >> >> + >> /** >> * amdgpu_device_init - initialize the driver >> * >> @@ -3207,6 +3210,9 @@ int amdgpu_device_init(struct amdgpu_device *adev, >> } >> } >> >> + pci_enable_pcie_error_reporting(adev->ddev.pdev); >> + >> + >> /* Post card if necessary */ >> if (amdgpu_device_need_post(adev)) { >> if (!adev->bios) { >> @@ -4701,3 +4707,162 @@ int amdgpu_device_baco_exit(struct drm_device *dev) >> >> return 0; >> } >> + >> +/** >> + * amdgpu_pci_error_detected - Called when a PCI error is detected. >> + * @pdev: PCI device struct >> + * @state: PCI channel state >> + * >> + * Description: Called when a PCI error is detected. >> + * >> + * Return: PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT. >> + */ >> +pci_ers_result_t amdgpu_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state) >> +{ >> + struct drm_device *dev = pci_get_drvdata(pdev); >> + struct amdgpu_device *adev = drm_to_adev(dev); >> + >> + DRM_INFO("PCI error: detected callback, state(%d)!!\n", state); >> + >> + switch (state) { >> + case pci_channel_io_normal: >> + return PCI_ERS_RESULT_CAN_RECOVER; >> + case pci_channel_io_frozen: { >> + /* Fatal error, prepare for slot reset */ >> + >> + amdgpu_device_lock_adev(adev); >> + return PCI_ERS_RESULT_NEED_RESET; >> + } >> + case pci_channel_io_perm_failure: >> + /* Permanent error, prepare for device removal */ >> + return PCI_ERS_RESULT_DISCONNECT; >> + } >> + return PCI_ERS_RESULT_NEED_RESET; >> +} >> + >> +/** >> + * amdgpu_pci_mmio_enabled - Enable MMIO and dump debug registers >> + * @pdev: pointer to PCI device >> + */ >> +pci_ers_result_t amdgpu_pci_mmio_enabled(struct pci_dev *pdev) >> +{ >> + >> + DRM_INFO("PCI error: mmio enabled callback!!\n"); >> + >> + /* TODO - dump whatever for debugging purposes */ >> + >> + /* This called only if amdgpu_pci_error_detected returns >> + * PCI_ERS_RESULT_CAN_RECOVER. Read/write to the device still >> + * works, no need to reset slot. >> + */ >> + >> + return PCI_ERS_RESULT_RECOVERED; >> +} >> + >> +/** >> + * amdgpu_pci_slot_reset - Called when PCI slot has been reset. >> + * @pdev: PCI device struct >> + * >> + * Description: This routine is called by the pci error recovery >> + * code after the PCI slot has been reset, just before we >> + * should resume normal operations. >> + */ >> +pci_ers_result_t amdgpu_pci_slot_reset(struct pci_dev *pdev) >> +{ >> + struct drm_device *dev = pci_get_drvdata(pdev); >> + struct amdgpu_device *adev = drm_to_adev(dev); >> + int r; >> + bool vram_lost; >> + >> + DRM_INFO("PCI error: slot reset callback!!\n"); >> + >> + pci_restore_state(pdev); >> + >> + r = amdgpu_device_ip_suspend(adev); >> + if (r) >> + goto out; >> + >> + >> + /* post card */ >> + r = amdgpu_atom_asic_init(adev->mode_info.atom_context); >> + if (r) >> + goto out; >> + >> + r = amdgpu_device_ip_resume_phase1(adev); >> + if (r) >> + goto out; >> + >> + vram_lost = amdgpu_device_check_vram_lost(adev); >> + if (vram_lost) { >> + DRM_INFO("VRAM is lost due to GPU reset!\n"); >> + amdgpu_inc_vram_lost(adev); >> + } >> + >> + r = amdgpu_gtt_mgr_recover( >> + &adev->mman.bdev.man[TTM_PL_TT]); >> + if (r) >> + goto out; >> + >> + r = amdgpu_device_fw_loading(adev); >> + if (r) >> + return r; >> + >> + r = amdgpu_device_ip_resume_phase2(adev); >> + if (r) >> + goto out; >> + >> + if (vram_lost) >> + amdgpu_device_fill_reset_magic(adev); >> + >> + /* >> + * Add this ASIC as tracked as reset was already >> + * complete successfully. >> + */ >> + amdgpu_register_gpu_instance(adev); >> + >> + r = amdgpu_device_ip_late_init(adev); >> + if (r) >> + goto out; >> + >> + amdgpu_fbdev_set_suspend(adev, 0); >> + >> + /* must succeed. */ >> + amdgpu_ras_resume(adev); >> + >> + >> + amdgpu_irq_gpu_reset_resume_helper(adev); >> + r = amdgpu_ib_ring_tests(adev); >> + if (r) >> + goto out; >> + >> + r = amdgpu_device_recover_vram(adev); >> + >> +out: >> + >> + if (!r) >> + DRM_INFO("PCIe error recovery succeeded\n"); >> + else { >> + DRM_ERROR("PCIe error recovery failed, err:%d", r); >> + amdgpu_device_unlock_adev(adev); >> + } >> + >> + return r ? PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_RECOVERED; >> +} >> + >> +/** >> + * amdgpu_pci_resume() - resume normal ops after PCI reset >> + * @pdev: pointer to PCI device >> + * >> + * Called when the error recovery driver tells us that its >> + * OK to resume normal operation. Use completion to allow >> + * halted scsi ops to resume. >> + */ >> +void amdgpu_pci_resume(struct pci_dev *pdev) >> +{ >> + struct drm_device *dev = pci_get_drvdata(pdev); >> + struct amdgpu_device *adev = drm_to_adev(dev); >> + >> + amdgpu_device_unlock_adev(adev); >> + >> + DRM_INFO("PCI error: resume callback!!\n"); >> +} >> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c >> index d984c6a..4bbcc70 100644 >> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c >> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c >> @@ -31,7 +31,6 @@ >> #include >> #include >> #include >> -#include > Is this intended? Seems unrelated. I think this should be part of > the previous patch. > > Alex Which previous patch (it's the first one) ? Andrey > > >> #include >> #include >> #include >> @@ -1534,6 +1533,13 @@ 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, >> @@ -1541,6 +1547,7 @@ 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) >> -- >> 2.7.4 >> >> _______________________________________________ >> amd-gfx mailing list >> amd-gfx@lists.freedesktop.org >> https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.freedesktop.org%2Fmailman%2Flistinfo%2Famd-gfx&data=02%7C01%7Candrey.grodzovsky%40amd.com%7Cc25d1302358c420604b908d84b87e5a8%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C637342394332573022&sdata=MvfAEC9Vc7fwkmBvihaTxDswrRJwFhjLWoEmjQKIIPg%3D&reserved=0 _______________________________________________ amd-gfx mailing list amd-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/amd-gfx