diff options
| -rw-r--r-- | drivers/pci/pcie/aer/aerdrv.c | 10 | ||||
| -rw-r--r-- | drivers/pci/pcie/aer/aerdrv_core.c | 18 | ||||
| -rw-r--r-- | drivers/pci/probe.c | 3 | ||||
| -rw-r--r-- | include/linux/pci.h | 5 |
4 files changed, 24 insertions, 12 deletions
diff --git a/drivers/pci/pcie/aer/aerdrv.c b/drivers/pci/pcie/aer/aerdrv.c index 08ce257077db..e99efaa723d5 100644 --- a/drivers/pci/pcie/aer/aerdrv.c +++ b/drivers/pci/pcie/aer/aerdrv.c @@ -134,7 +134,7 @@ static void aer_enable_rootport(struct aer_rpc *rpc) pcie_capability_clear_word(pdev, PCI_EXP_RTCTL, SYSTEM_ERROR_INTR_ON_MESG_MASK); - aer_pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_ERR); + aer_pos = pdev->aer_cap; /* Clear error status */ pci_read_config_dword(pdev, aer_pos + PCI_ERR_ROOT_STATUS, ®32); pci_write_config_dword(pdev, aer_pos + PCI_ERR_ROOT_STATUS, reg32); @@ -173,7 +173,7 @@ static void aer_disable_rootport(struct aer_rpc *rpc) */ set_downstream_devices_error_reporting(pdev, false); - pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_ERR); + pos = pdev->aer_cap; /* Disable Root's interrupt in response to error messages */ pci_read_config_dword(pdev, pos + PCI_ERR_ROOT_COMMAND, ®32); reg32 &= ~ROOT_PORT_INTR_ON_MESG_MASK; @@ -200,7 +200,7 @@ irqreturn_t aer_irq(int irq, void *context) unsigned long flags; int pos; - pos = pci_find_ext_capability(pdev->port, PCI_EXT_CAP_ID_ERR); + pos = pdev->port->aer_cap; /* * Must lock access to Root Error Status Reg, Root Error ID Reg, * and Root error producer/consumer index @@ -338,7 +338,7 @@ static pci_ers_result_t aer_root_reset(struct pci_dev *dev) u32 reg32; int pos; - pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR); + pos = dev->aer_cap; /* Disable Root's interrupt in response to error messages */ pci_read_config_dword(dev, pos + PCI_ERR_ROOT_COMMAND, ®32); @@ -391,7 +391,7 @@ static void aer_error_resume(struct pci_dev *dev) pcie_capability_write_word(dev, PCI_EXP_DEVSTA, reg16); /* Clean AER Root Error Status */ - pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR); + pos = dev->aer_cap; pci_read_config_dword(dev, pos + PCI_ERR_UNCOR_STATUS, &status); pci_read_config_dword(dev, pos + PCI_ERR_UNCOR_SEVER, &mask); if (dev->error_state == pci_channel_io_normal) diff --git a/drivers/pci/pcie/aer/aerdrv_core.c b/drivers/pci/pcie/aer/aerdrv_core.c index 9fd18a08b23e..b1303b32053f 100644 --- a/drivers/pci/pcie/aer/aerdrv_core.c +++ b/drivers/pci/pcie/aer/aerdrv_core.c @@ -35,7 +35,7 @@ int pci_enable_pcie_error_reporting(struct pci_dev *dev) if (pcie_aer_get_firmware_first(dev)) return -EIO; - if (!pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR)) + if (!dev->aer_cap) return -EIO; return pcie_capability_set_word(dev, PCI_EXP_DEVCTL, PCI_EXP_AER_FLAGS); @@ -57,7 +57,7 @@ int pci_cleanup_aer_uncorrect_error_status(struct pci_dev *dev) int pos; u32 status; - pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR); + pos = dev->aer_cap; if (!pos) return -EIO; @@ -78,7 +78,7 @@ int pci_cleanup_aer_error_status_regs(struct pci_dev *dev) if (!pci_is_pcie(dev)) return -ENODEV; - pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR); + pos = dev->aer_cap; if (!pos) return -EIO; @@ -97,6 +97,12 @@ int pci_cleanup_aer_error_status_regs(struct pci_dev *dev) return 0; } +int pci_aer_init(struct pci_dev *dev) +{ + dev->aer_cap = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR); + return pci_cleanup_aer_error_status_regs(dev); +} + /** * add_error_device - list device to be handled * @e_info: pointer to error info @@ -154,7 +160,7 @@ static bool is_error_source(struct pci_dev *dev, struct aer_err_info *e_info) if (!(reg16 & PCI_EXP_AER_FLAGS)) return false; - pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR); + pos = dev->aer_cap; if (!pos) return false; @@ -551,7 +557,7 @@ static void handle_error_source(struct pcie_device *aerdev, * Correctable error does not need software intervention. * No need to go through error recovery process. */ - pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR); + pos = dev->aer_cap; if (pos) pci_write_config_dword(dev, pos + PCI_ERR_COR_STATUS, info->status); @@ -643,7 +649,7 @@ static int get_device_error_info(struct pci_dev *dev, struct aer_err_info *info) info->status = 0; info->tlp_header_valid = 0; - pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR); + pos = dev->aer_cap; /* The device might not support AER */ if (!pos) diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index 93f280df3428..157572420513 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -1666,7 +1666,8 @@ static void pci_init_capabilities(struct pci_dev *dev) /* Enable ACS P2P upstream forwarding */ pci_enable_acs(dev); - pci_cleanup_aer_error_status_regs(dev); + /* Advanced Error Reporting */ + pci_aer_init(dev); } /* diff --git a/include/linux/pci.h b/include/linux/pci.h index 57bc838e0666..ab6b02763916 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -269,6 +269,9 @@ struct pci_dev { unsigned int class; /* 3 bytes: (base,sub,prog-if) */ u8 revision; /* PCI revision, low byte of class word */ u8 hdr_type; /* PCI header type (`multi' flag masked out) */ +#ifdef CONFIG_PCIEAER + u16 aer_cap; /* AER capability offset */ +#endif u8 pcie_cap; /* PCIe capability offset */ u8 msi_cap; /* MSI capability offset */ u8 msix_cap; /* MSI-X capability offset */ @@ -1369,9 +1372,11 @@ static inline bool pcie_aspm_support_enabled(void) { return false; } #ifdef CONFIG_PCIEAER void pci_no_aer(void); bool pci_aer_available(void); +int pci_aer_init(struct pci_dev *dev); #else static inline void pci_no_aer(void) { } static inline bool pci_aer_available(void) { return false; } +static inline int pci_aer_init(struct pci_dev *d) { return -ENODEV; } #endif #ifdef CONFIG_PCIE_ECRC |