On Mon, Sep 12, 2022 at 01:09:05AM +0800, Zhuo Chen wrote: > > > On 9/12/22 12:22 AM, Serge Semin wrote: > > Hi Zhuo > > > > On Fri, Sep 02, 2022 at 02:16:32AM +0800, Zhuo Chen wrote: > > > Status bits for ERR_NONFATAL errors only are cleared in > > > pci_aer_clear_nonfatal_status(), but we want clear uncorrectable > > > error status in ntb_hw_idt.c and lpfc_attr.c. So we add > > > pci_aer_clear_uncorrect_error_status() and change to use it. > > > > What about the next drivers > > > > drivers/scsi/lpfc/lpfc_attr.c > > drivers/crypto/hisilicon/qm.c > > drivers/net/ethernet/intel/ice/ice_main.c > > > > which call the pci_aer_clear_nonfatal_status() method too? > > ‘pci_aer_clear_nonfatal_status()’ in > drivers/net/ethernet/intel/ice/ice_main.c has already been removed and > merged in kernel in: https://github.com/torvalds/linux/commit/ca415ea1f03abf34fc8e4cc5fc30a00189b4e776 > > ‘pci_aer_clear_nonfatal_status()’ in drivers/crypto/hisilicon/qm.c will be > removed in the next kernel: > https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/drivers/crypto/hisilicon/qm.c?id=00278564a60e11df8bcca0ececd8b2f55434e406 > > Uncorrectable error status register was intended to be cleared in > drivers/scsi/lpfc/lpfc_attr.c. But originally function was changed in https://github.com/torvalds/linux/commit/e7b0b847de6db161e3917732276e425bc92a2feb > and > https://github.com/torvalds/linux/commit/894020fdd88c1e9a74c60b67c0f19f1c7696ba2f Got it. Thanks for clarification. -Sergey > > > > > > > > Use pci_aer_clear_nonfatal_status() in dpc_process_error(), which has > > > no functional changes. > > > > > > Since pci_aer_clear_nonfatal_status() is used only internally, move > > > its declaration to the PCI internal header file. Also, no one cares > > > about return value of pci_aer_clear_nonfatal_status(), so make it void. > > > > > > Signed-off-by: Zhuo Chen <chenzhuo.1@xxxxxxxxxxxxx> > > > --- > > > drivers/ntb/hw/idt/ntb_hw_idt.c | 4 ++-- > > > drivers/pci/pci.h | 2 ++ > > > drivers/pci/pcie/aer.c | 23 ++++++++++++++++++----- > > > drivers/pci/pcie/dpc.c | 3 +-- > > > drivers/scsi/lpfc/lpfc_attr.c | 4 ++-- > > > include/linux/aer.h | 4 ++-- > > > 6 files changed, 27 insertions(+), 13 deletions(-) > > > > > > diff --git a/drivers/ntb/hw/idt/ntb_hw_idt.c b/drivers/ntb/hw/idt/ntb_hw_idt.c > > > index 733557231ed0..de1dbbc5b9de 100644 > > > --- a/drivers/ntb/hw/idt/ntb_hw_idt.c > > > +++ b/drivers/ntb/hw/idt/ntb_hw_idt.c > > > @@ -2657,8 +2657,8 @@ static int idt_init_pci(struct idt_ntb_dev *ndev) > > > ret = pci_enable_pcie_error_reporting(pdev); > > > if (ret != 0) > > > dev_warn(&pdev->dev, "PCIe AER capability disabled\n"); > > > > > - else /* Cleanup nonfatal error status before getting to init */ > > > - pci_aer_clear_nonfatal_status(pdev); > > > + else /* Cleanup uncorrectable error status before getting to init */ > > > + pci_aer_clear_uncorrect_error_status(pdev); > > > > From the IDT NTB PCIe initialization procedure point of view both of > > these methods are equivalent. So for the IDT NTB part: > > > IDT NTB part is the same as drivers/scsi/lpfc/lpfc_attr.c. The original > function is clear uncorrectable error status register including fatal and > non-fatal error status bits. > > > Acked-by: Serge Semin <fancer.lancer@xxxxxxxxx> > > > > -Sergey > > > > > /* First enable the PCI device */ > > > ret = pcim_enable_device(pdev); > > > diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h > > > index e10cdec6c56e..574176f43025 100644 > > > --- a/drivers/pci/pci.h > > > +++ b/drivers/pci/pci.h > > > @@ -686,6 +686,7 @@ void pci_aer_init(struct pci_dev *dev); > > > void pci_aer_exit(struct pci_dev *dev); > > > extern const struct attribute_group aer_stats_attr_group; > > > void pci_aer_clear_fatal_status(struct pci_dev *dev); > > > +void pci_aer_clear_nonfatal_status(struct pci_dev *dev); > > > int pci_aer_clear_status(struct pci_dev *dev); > > > int pci_aer_raw_clear_status(struct pci_dev *dev); > > > #else > > > @@ -693,6 +694,7 @@ static inline void pci_no_aer(void) { } > > > static inline void pci_aer_init(struct pci_dev *d) { } > > > static inline void pci_aer_exit(struct pci_dev *d) { } > > > static inline void pci_aer_clear_fatal_status(struct pci_dev *dev) { } > > > +static inline void pci_aer_clear_nonfatal_status(struct pci_dev *dev) { } > > > static inline int pci_aer_clear_status(struct pci_dev *dev) { return -EINVAL; } > > > static inline int pci_aer_raw_clear_status(struct pci_dev *dev) { return -EINVAL; } > > > #endif > > > diff --git a/drivers/pci/pcie/aer.c b/drivers/pci/pcie/aer.c > > > index 7952e5efd6cf..d2996afa80f6 100644 > > > --- a/drivers/pci/pcie/aer.c > > > +++ b/drivers/pci/pcie/aer.c > > > @@ -251,13 +251,13 @@ int pci_disable_pcie_error_reporting(struct pci_dev *dev) > > > } > > > EXPORT_SYMBOL_GPL(pci_disable_pcie_error_reporting); > > > -int pci_aer_clear_nonfatal_status(struct pci_dev *dev) > > > +void pci_aer_clear_nonfatal_status(struct pci_dev *dev) > > > { > > > int aer = dev->aer_cap; > > > u32 status, sev; > > > if (!pcie_aer_is_native(dev)) > > > - return -EIO; > > > + return; > > > /* Clear status bits for ERR_NONFATAL errors only */ > > > pci_read_config_dword(dev, aer + PCI_ERR_UNCOR_STATUS, &status); > > > @@ -265,10 +265,7 @@ int pci_aer_clear_nonfatal_status(struct pci_dev *dev) > > > status &= ~sev; > > > if (status) > > > pci_write_config_dword(dev, aer + PCI_ERR_UNCOR_STATUS, status); > > > - > > > - return 0; > > > } > > > -EXPORT_SYMBOL_GPL(pci_aer_clear_nonfatal_status); > > > void pci_aer_clear_fatal_status(struct pci_dev *dev) > > > { > > > @@ -286,6 +283,22 @@ void pci_aer_clear_fatal_status(struct pci_dev *dev) > > > pci_write_config_dword(dev, aer + PCI_ERR_UNCOR_STATUS, status); > > > } > > > +int pci_aer_clear_uncorrect_error_status(struct pci_dev *dev) > > > +{ > > > + int aer = dev->aer_cap; > > > + u32 status; > > > + > > > + if (!pcie_aer_is_native(dev)) > > > + return -EIO; > > > + > > > + pci_read_config_dword(dev, aer + PCI_ERR_UNCOR_STATUS, &status); > > > + if (status) > > > + pci_write_config_dword(dev, aer + PCI_ERR_UNCOR_STATUS, status); > > > + > > > + return 0; > > > +} > > > +EXPORT_SYMBOL_GPL(pci_aer_clear_uncorrect_error_status); > > > + > > > /** > > > * pci_aer_raw_clear_status - Clear AER error registers. > > > * @dev: the PCI device > > > diff --git a/drivers/pci/pcie/dpc.c b/drivers/pci/pcie/dpc.c > > > index 3e9afee02e8d..7942073fbb34 100644 > > > --- a/drivers/pci/pcie/dpc.c > > > +++ b/drivers/pci/pcie/dpc.c > > > @@ -288,8 +288,7 @@ void dpc_process_error(struct pci_dev *pdev) > > > dpc_get_aer_uncorrect_severity(pdev, &info) && > > > aer_get_device_error_info(pdev, &info)) { > > > aer_print_error(pdev, &info); > > > - pci_aer_clear_nonfatal_status(pdev); > > > - pci_aer_clear_fatal_status(pdev); > > > + pci_aer_clear_uncorrect_error_status(pdev); > > > } > > > } > > > diff --git a/drivers/scsi/lpfc/lpfc_attr.c b/drivers/scsi/lpfc/lpfc_attr.c > > > index 3caaa7c4af48..1ed8d1640325 100644 > > > --- a/drivers/scsi/lpfc/lpfc_attr.c > > > +++ b/drivers/scsi/lpfc/lpfc_attr.c > > > @@ -4712,7 +4712,7 @@ static DEVICE_ATTR_RW(lpfc_aer_support); > > > * Description: > > > * If the @buf contains 1 and the device currently has the AER support > > > * enabled, then invokes the kernel AER helper routine > > > - * pci_aer_clear_nonfatal_status() to clean up the uncorrectable > > > + * pci_aer_clear_uncorrect_error_status() to clean up the uncorrectable > > > * error status register. > > > * > > > * Notes: > > > @@ -4738,7 +4738,7 @@ lpfc_aer_cleanup_state(struct device *dev, struct device_attribute *attr, > > > return -EINVAL; > > > if (phba->hba_flag & HBA_AER_ENABLED) > > > - rc = pci_aer_clear_nonfatal_status(phba->pcidev); > > > + rc = pci_aer_clear_uncorrect_error_status(phba->pcidev); > > > if (rc == 0) > > > return strlen(buf); > > > diff --git a/include/linux/aer.h b/include/linux/aer.h > > > index 97f64ba1b34a..f638ad955deb 100644 > > > --- a/include/linux/aer.h > > > +++ b/include/linux/aer.h > > > @@ -44,7 +44,7 @@ struct aer_capability_regs { > > > /* PCIe port driver needs this function to enable AER */ > > > int pci_enable_pcie_error_reporting(struct pci_dev *dev); > > > int pci_disable_pcie_error_reporting(struct pci_dev *dev); > > > -int pci_aer_clear_nonfatal_status(struct pci_dev *dev); > > > +int pci_aer_clear_uncorrect_error_status(struct pci_dev *dev); > > > void pci_save_aer_state(struct pci_dev *dev); > > > void pci_restore_aer_state(struct pci_dev *dev); > > > #else > > > @@ -56,7 +56,7 @@ static inline int pci_disable_pcie_error_reporting(struct pci_dev *dev) > > > { > > > return -EINVAL; > > > } > > > -static inline int pci_aer_clear_nonfatal_status(struct pci_dev *dev) > > > +static inline int pci_aer_clear_uncorrect_error_status(struct pci_dev *dev) > > > { > > > return -EINVAL; > > > } > > > -- > > > 2.30.1 (Apple Git-130) > > > > > -- > Thanks, > Zhuo Chen
