pci_dev_put – release a use of the pci device structure Synopsis void pci_dev_put(struct pci_dev *dev); Arguments dev device that’s been disconnected Description Must be called when a user of a device is finished with it. When the last user of the device calls this function, the memory of the device is freed. Copyright
pci_dev_present – Returns 1 if device matching the device list is present, 0 if not. Synopsis int pci_dev_present(const struct pci_device_id *ids); Arguments ids A pointer to a null terminated list of struct pci_device_id structures that describe the type of PCI device the caller is trying to find. Description Obvious fact: You do not have a…
pci_dev_get – increments the reference count of the pci device structure Synopsis struct pci_dev *pci_dev_get(struct pci_dev *dev); Arguments dev the device being referenced Description Each live reference to a device should be refcounted. Drivers for PCI devices should normally record such references in their probe methods, when they bind to a device, and release them…
pci_dev_driver – get the pci_driver of a device Synopsis struct pci_driver *pci_dev_driver(const struct pci_dev *dev); Arguments dev the device to query Description Returns the appropriate pci_driver structure or NULL if there is no registered driver for the device. Copyright
pci_destroy_slot – decrement refcount for physical PCI slot Synopsis void pci_destroy_slot(struct pci_slot *slot); Arguments slot struct pci_slot to decrement Description struct pci_slot is refcounted, so destroying them is really easy; we just call kobject_put on its kobj and let our release methods do the rest. Copyright
pci_d3cold_enable – Enable D3cold for device Synopsis void pci_d3cold_enable(struct pci_dev *dev); Arguments dev PCI device to handle Description This function can be used in drivers to enable D3cold from the device they handle. It also updates upstream PCI bridge PM capabilities accordingly. Copyright
pci_d3cold_disable – Disable D3cold for device Synopsis void pci_d3cold_disable(struct pci_dev *dev); Arguments dev PCI device to handle Description This function can be used in drivers to disable D3cold from the device they handle. It also updates upstream PCI bridge PM capabilities accordingly. Copyright
pci_create_slot – create or increment refcount for physical PCI slot Synopsis struct pci_slot *pci_create_slot(struct pci_bus *parent, int slot_nr, const char *name, struct hotplug_slot *hotplug); Arguments parent struct pci_bus of parent bridge slot_nr PCI_SLOT(pci_dev->devfn) or -1 for placeholder name user visible string presented in /sys/bus/pci/slots/<name> hotplug set if caller is hotplug driver, NULL otherwise Description PCI…
pci_create_resource_files – create resource files in sysfs for dev Synopsis int pci_create_resource_files(struct pci_dev *pdev); Arguments pdev dev in question Description Walk the resources in pdev creating files for each resource available. Copyright
pci_create_legacy_files – create legacy I/O port and memory files Synopsis void pci_create_legacy_files(struct pci_bus *b); Arguments b bus to create files under Description Some platforms allow access to legacy I/O port and ISA memory space on a per-bus basis. This routine creates the files and ties them into their associated read, write and mmap files from…
pci_common_swizzle – swizzle INTx all the way to root bridge Synopsis u8 pci_common_swizzle(struct pci_dev * dev, u8 * pinp); Arguments dev the PCI device pinp pointer to the INTx pin value (1=INTA, 2=INTB, 3=INTD, 4=INTD) Description Perform INTx swizzling for a device. This traverses through all PCI-to-PCI bridges all the way up to a PCI root bus. Copyright
pci_clear_mwi – disables Memory-Write-Invalidate for device dev Synopsis void pci_clear_mwi(struct pci_dev *dev); Arguments dev the PCI device to disable Description Disables PCI Memory-Write-Invalidate transaction on the device Copyright
pci_clear_master – disables bus-mastering for device dev Synopsis void pci_clear_master(struct pci_dev *dev); Arguments dev the PCI device to disable Copyright
pci_choose_state – Choose the power state of a PCI device Synopsis pci_power_t pci_choose_state(struct pci_dev * dev, pm_message_t state); Arguments dev PCI device to be suspended state target sleep state for the whole system. This is the value that is passed to suspend function. Description Returns PCI power state suitable for given device and given system message. Copyright
pci_check_and_unmask_intx – unmask INTx if no interrupt is pending Synopsis bool pci_check_and_unmask_intx(struct pci_dev * dev); Arguments dev the PCI device to operate on Description Check if the device dev has its INTx line asserted, unmask it if not and return true. False is returned and the mask remains active if there was still an interrupt pending. Copyright
pci_check_and_mask_intx – mask INTx on pending interrupt Synopsis bool pci_check_and_mask_intx(struct pci_dev * dev); Arguments dev the PCI device to operate on Description Check if the device dev has its INTx line asserted, mask it and return true in that case. False is returned if not interrupt was pending. Copyright
pci_cfg_access_unlock – Unlock PCI config reads/writes Synopsis void pci_cfg_access_unlock(struct pci_dev *dev); Arguments dev pci device struct Description This function allows PCI config accesses to resume. Copyright
pci_cfg_access_trylock – try to lock PCI config reads/writes Synopsis bool pci_cfg_access_trylock(struct pci_dev * dev); Arguments dev pci device struct Description Same as pci_cfg_access_lock, but will return 0 if access is already locked, 1 otherwise. This function can be used from atomic contexts. Copyright
pci_cfg_access_lock – Lock PCI config reads/writes Synopsis void pci_cfg_access_lock(struct pci_dev *dev); Arguments dev pci device struct Description When access is locked, any userspace reads or writes to config space and concurrent lock requests will sleep until access is allowed via pci_cfg_access_unlocked again. Copyright
pci_bus_set_ops – Set raw operations of pci bus Synopsis struct pci_ops *pci_bus_set_ops(struct pci_bus *bus, struct pci_ops *ops); Arguments bus pci bus struct ops new raw operations Description Return previous raw operations Copyright