diff options
| author | Sean V Kelley <sean.v.kelley@intel.com> | 2020-11-20 16:10:24 -0800 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2020-12-04 11:18:50 -0600 |
| commit | 90655631988f8f501529e6de5f13614389717ead (patch) | |
| tree | 58f7bf6df82e1c6a97f62d47d4b08ffb344767c1 /drivers/pci/pci.h | |
| parent | c9d659b60770db94b898f94947192a94bbf95c5c (diff) | |
| download | linux-90655631988f8f501529e6de5f13614389717ead.tar.bz2 | |
PCI/ERR: Cache RCEC EA Capability offset in pci_init_capabilities()
Extend support for Root Complex Event Collectors by decoding and caching
the RCEC Endpoint Association Extended Capabilities when enumerating. Use
that cached information for later error source reporting. See PCIe r5.0,
sec 7.9.10.
Co-developed-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com>
Link: https://lore.kernel.org/r/20201121001036.8560-4-sean.v.kelley@intel.com
Tested-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> # non-native/no RCEC
Signed-off-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com>
Signed-off-by: Sean V Kelley <sean.v.kelley@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/pci/pci.h')
| -rw-r--r-- | drivers/pci/pci.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h index f86cae9aa1f4..12dcad8f3635 100644 --- a/drivers/pci/pci.h +++ b/drivers/pci/pci.h @@ -448,6 +448,15 @@ int aer_get_device_error_info(struct pci_dev *dev, struct aer_err_info *info); void aer_print_error(struct pci_dev *dev, struct aer_err_info *info); #endif /* CONFIG_PCIEAER */ +#ifdef CONFIG_PCIEPORTBUS +/* Cached RCEC Endpoint Association */ +struct rcec_ea { + u8 nextbusn; + u8 lastbusn; + u32 bitmap; +}; +#endif + #ifdef CONFIG_PCIE_DPC void pci_save_dpc_state(struct pci_dev *dev); void pci_restore_dpc_state(struct pci_dev *dev); @@ -460,6 +469,14 @@ static inline void pci_restore_dpc_state(struct pci_dev *dev) {} static inline void pci_dpc_init(struct pci_dev *pdev) {} #endif +#ifdef CONFIG_PCIEPORTBUS +void pci_rcec_init(struct pci_dev *dev); +void pci_rcec_exit(struct pci_dev *dev); +#else +static inline void pci_rcec_init(struct pci_dev *dev) {} +static inline void pci_rcec_exit(struct pci_dev *dev) {} +#endif + #ifdef CONFIG_PCI_ATS /* Address Translation Service */ void pci_ats_init(struct pci_dev *dev); |