diff options
Diffstat (limited to 'drivers/pci/access.c')
| -rw-r--r-- | drivers/pci/access.c | 59 |
1 files changed, 58 insertions, 1 deletions
diff --git a/drivers/pci/access.c b/drivers/pci/access.c index 5b7842b03571..74cf5fffb1e1 100644 --- a/drivers/pci/access.c +++ b/drivers/pci/access.c @@ -700,7 +700,8 @@ static bool pcie_downstream_port(const struct pci_dev *dev) int type = pci_pcie_type(dev); return type == PCI_EXP_TYPE_ROOT_PORT || - type == PCI_EXP_TYPE_DOWNSTREAM; + type == PCI_EXP_TYPE_DOWNSTREAM || + type == PCI_EXP_TYPE_PCIE_BRIDGE; } bool pcie_cap_has_lnkctl(const struct pci_dev *dev) @@ -890,3 +891,59 @@ int pcie_capability_clear_and_set_dword(struct pci_dev *dev, int pos, return ret; } EXPORT_SYMBOL(pcie_capability_clear_and_set_dword); + +int pci_read_config_byte(const struct pci_dev *dev, int where, u8 *val) +{ + if (pci_dev_is_disconnected(dev)) { + *val = ~0; + return -ENODEV; + } + return pci_bus_read_config_byte(dev->bus, dev->devfn, where, val); +} +EXPORT_SYMBOL(pci_read_config_byte); + +int pci_read_config_word(const struct pci_dev *dev, int where, u16 *val) +{ + if (pci_dev_is_disconnected(dev)) { + *val = ~0; + return -ENODEV; + } + return pci_bus_read_config_word(dev->bus, dev->devfn, where, val); +} +EXPORT_SYMBOL(pci_read_config_word); + +int pci_read_config_dword(const struct pci_dev *dev, int where, + u32 *val) +{ + if (pci_dev_is_disconnected(dev)) { + *val = ~0; + return -ENODEV; + } + return pci_bus_read_config_dword(dev->bus, dev->devfn, where, val); +} +EXPORT_SYMBOL(pci_read_config_dword); + +int pci_write_config_byte(const struct pci_dev *dev, int where, u8 val) +{ + if (pci_dev_is_disconnected(dev)) + return -ENODEV; + return pci_bus_write_config_byte(dev->bus, dev->devfn, where, val); +} +EXPORT_SYMBOL(pci_write_config_byte); + +int pci_write_config_word(const struct pci_dev *dev, int where, u16 val) +{ + if (pci_dev_is_disconnected(dev)) + return -ENODEV; + return pci_bus_write_config_word(dev->bus, dev->devfn, where, val); +} +EXPORT_SYMBOL(pci_write_config_word); + +int pci_write_config_dword(const struct pci_dev *dev, int where, + u32 val) +{ + if (pci_dev_is_disconnected(dev)) + return -ENODEV; + return pci_bus_write_config_dword(dev->bus, dev->devfn, where, val); +} +EXPORT_SYMBOL(pci_write_config_dword); |