diff options
Diffstat (limited to 'drivers/pci/pci.c')
| -rw-r--r-- | drivers/pci/pci.c | 45 |
1 files changed, 39 insertions, 6 deletions
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 7325d43bf03..436a76ab4bb 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -106,7 +106,7 @@ static bool pcie_ari_disabled; * Given a PCI bus, returns the highest PCI bus number present in the set * including the given PCI bus and its list of child PCI buses. */ -unsigned char pci_bus_max_busnr(struct pci_bus* bus) +unsigned char pci_bus_max_busnr(struct pci_bus *bus) { struct pci_bus *tmp; unsigned char max, n; @@ -1371,7 +1371,7 @@ static void pcim_release(struct device *gendev, void *res) pci_disable_device(dev); } -static struct pci_devres * get_pci_dr(struct pci_dev *pdev) +static struct pci_devres *get_pci_dr(struct pci_dev *pdev) { struct pci_devres *dr, *new_dr; @@ -1385,7 +1385,7 @@ static struct pci_devres * get_pci_dr(struct pci_dev *pdev) return devres_get(&pdev->dev, new_dr, NULL, NULL); } -static struct pci_devres * find_pci_dr(struct pci_dev *pdev) +static struct pci_devres *find_pci_dr(struct pci_dev *pdev) { if (pci_is_managed(pdev)) return devres_find(&pdev->dev, pcim_release, NULL, NULL); @@ -1468,6 +1468,17 @@ void __weak pcibios_release_device(struct pci_dev *dev) {} */ void __weak pcibios_disable_device (struct pci_dev *dev) {} +/** + * pcibios_penalize_isa_irq - penalize an ISA IRQ + * @irq: ISA IRQ to penalize + * @active: IRQ active or not + * + * Permits the platform to provide architecture-specific functionality when + * penalizing ISA IRQs. This is the default implementation. Architecture + * implementations can override this. + */ +void __weak pcibios_penalize_isa_irq(int irq, int active) {} + static void do_pci_disable_device(struct pci_dev *dev) { u16 pci_command; @@ -3067,7 +3078,8 @@ int pci_wait_for_pending_transaction(struct pci_dev *dev) if (!pci_is_pcie(dev)) return 1; - return pci_wait_for_pending(dev, PCI_EXP_DEVSTA, PCI_EXP_DEVSTA_TRPND); + return pci_wait_for_pending(dev, pci_pcie_cap(dev) + PCI_EXP_DEVSTA, + PCI_EXP_DEVSTA_TRPND); } EXPORT_SYMBOL(pci_wait_for_pending_transaction); @@ -3109,7 +3121,7 @@ static int pci_af_flr(struct pci_dev *dev, int probe) return 0; /* Wait for Transaction Pending bit clean */ - if (pci_wait_for_pending(dev, PCI_AF_STATUS, PCI_AF_STATUS_TP)) + if (pci_wait_for_pending(dev, pos + PCI_AF_STATUS, PCI_AF_STATUS_TP)) goto clear; dev_err(&dev->dev, "transaction is not cleared; " @@ -3305,8 +3317,27 @@ static void pci_dev_unlock(struct pci_dev *dev) pci_cfg_access_unlock(dev); } +/** + * pci_reset_notify - notify device driver of reset + * @dev: device to be notified of reset + * @prepare: 'true' if device is about to be reset; 'false' if reset attempt + * completed + * + * Must be called prior to device access being disabled and after device + * access is restored. + */ +static void pci_reset_notify(struct pci_dev *dev, bool prepare) +{ + const struct pci_error_handlers *err_handler = + dev->driver ? dev->driver->err_handler : NULL; + if (err_handler && err_handler->reset_notify) + err_handler->reset_notify(dev, prepare); +} + static void pci_dev_save_and_disable(struct pci_dev *dev) { + pci_reset_notify(dev, true); + /* * Wake-up device prior to save. PM registers default to D0 after * reset and a simple register restore doesn't reliably return @@ -3328,6 +3359,7 @@ static void pci_dev_save_and_disable(struct pci_dev *dev) static void pci_dev_restore(struct pci_dev *dev) { pci_restore_state(dev); + pci_reset_notify(dev, false); } static int pci_dev_reset(struct pci_dev *dev, int probe) @@ -3344,6 +3376,7 @@ static int pci_dev_reset(struct pci_dev *dev, int probe) return rc; } + /** * __pci_reset_function - reset a PCI device function * @dev: PCI device to reset @@ -4125,7 +4158,7 @@ int pci_set_vga_state(struct pci_dev *dev, bool decode, u16 cmd; int rc; - WARN_ON((flags & PCI_VGA_STATE_CHANGE_DECODES) & (command_bits & ~(PCI_COMMAND_IO|PCI_COMMAND_MEMORY))); + WARN_ON((flags & PCI_VGA_STATE_CHANGE_DECODES) && (command_bits & ~(PCI_COMMAND_IO|PCI_COMMAND_MEMORY))); /* ARCH specific VGA enables */ rc = pci_set_vga_state_arch(dev, decode, command_bits, flags); |