DECLARE_RWSEM(pci_bus_sem);
/*
- * find the upstream PCIE-to-PCI bridge of a PCI device
+ * find the upstream PCIe-to-PCI bridge of a PCI device
* if the device is PCIE, return NULL
- * if the device isn't connected to a PCIE bridge (that is its parent is a
+ * if the device isn't connected to a PCIe bridge (that is its parent is a
* legacy PCI bridge and the bridge is directly connected to bus 0), return its
* parent
*/
{
struct pci_dev *tmp = NULL;
- if (pdev->is_pcie)
+ if (pci_is_pcie(pdev))
return NULL;
while (1) {
- if (!pdev->bus->self)
+ if (pci_is_root_bus(pdev->bus))
break;
pdev = pdev->bus->self;
/* a p2p bridge */
- if (!pdev->is_pcie) {
+ if (!pci_is_pcie(pdev)) {
tmp = pdev;
continue;
}
- /* PCI device should connect to a PCIE bridge */
+ /* PCI device should connect to a PCIe bridge */
if (pdev->pcie_type != PCI_EXP_TYPE_PCI_BRIDGE) {
/* Busted hardware? */
WARN_ON_ONCE(1);
return b;
}
-#ifdef CONFIG_PCI_LEGACY
-/**
- * pci_find_slot - locate PCI device from a given PCI slot
- * @bus: number of PCI bus on which desired PCI device resides
- * @devfn: encodes number of PCI slot in which the desired PCI
- * device resides and the logical device number within that slot
- * in case of multi-function devices.
- *
- * Given a PCI bus and slot/function number, the desired PCI device
- * is located in system global list of PCI devices. If the device
- * is found, a pointer to its data structure is returned. If no
- * device is found, %NULL is returned.
- *
- * NOTE: Do not use this function any more; use pci_get_slot() instead, as
- * the PCI device returned by this function can disappear at any moment in
- * time.
- */
-struct pci_dev *pci_find_slot(unsigned int bus, unsigned int devfn)
-{
- struct pci_dev *dev = NULL;
-
- while ((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) {
- if (dev->bus->number == bus && dev->devfn == devfn) {
- pci_dev_put(dev);
- return dev;
- }
- }
- return NULL;
-}
-EXPORT_SYMBOL(pci_find_slot);
-
-/**
- * pci_find_device - begin or continue searching for a PCI device by vendor/device id
- * @vendor: PCI vendor id to match, or %PCI_ANY_ID to match all vendor ids
- * @device: PCI device id to match, or %PCI_ANY_ID to match all device ids
- * @from: Previous PCI device found in search, or %NULL for new search.
- *
- * Iterates through the list of known PCI devices. If a PCI device is found
- * with a matching @vendor and @device, a pointer to its device structure is
- * returned. Otherwise, %NULL is returned.
- * A new search is initiated by passing %NULL as the @from argument.
- * Otherwise if @from is not %NULL, searches continue from next device
- * on the global list.
- *
- * NOTE: Do not use this function any more; use pci_get_device() instead, as
- * the PCI device returned by this function can disappear at any moment in
- * time.
- */
-struct pci_dev *pci_find_device(unsigned int vendor, unsigned int device,
- const struct pci_dev *from)
-{
- struct pci_dev *pdev;
-
- pdev = pci_get_subsys(vendor, device, PCI_ANY_ID, PCI_ANY_ID, from);
- pci_dev_put(pdev);
- return pdev;
-}
-EXPORT_SYMBOL(pci_find_device);
-#endif /* CONFIG_PCI_LEGACY */
-
/**
* pci_get_slot - locate PCI device for a given PCI slot
* @bus: PCI bus on which desired PCI device resides
}
/**
- * pci_get_bus_and_slot - locate PCI device from a given PCI bus & slot
- * @bus: number of PCI bus on which desired PCI device resides
- * @devfn: encodes number of PCI slot in which the desired PCI
- * device resides and the logical device number within that slot
- * in case of multi-function devices.
- *
- * Note: the bus/slot search is limited to PCI domain (segment) 0.
+ * pci_get_domain_bus_and_slot - locate PCI device for a given PCI domain (segment), bus, and slot
+ * @domain: PCI domain/segment on which the PCI device resides.
+ * @bus: PCI bus on which desired PCI device resides
+ * @devfn: encodes number of PCI slot in which the desired PCI device
+ * resides and the logical device number within that slot in case of
+ * multi-function devices.
*
- * Given a PCI bus and slot/function number, the desired PCI device
- * is located in system global list of PCI devices. If the device
- * is found, a pointer to its data structure is returned. If no
- * device is found, %NULL is returned. The returned device has its
- * reference count bumped by one.
+ * Given a PCI domain, bus, and slot/function number, the desired PCI
+ * device is located in the list of PCI devices. If the device is
+ * found, its reference count is increased and this function returns a
+ * pointer to its data structure. The caller must decrement the
+ * reference count by calling pci_dev_put(). If no device is found,
+ * %NULL is returned.
*/
-
-struct pci_dev * pci_get_bus_and_slot(unsigned int bus, unsigned int devfn)
+struct pci_dev *pci_get_domain_bus_and_slot(int domain, unsigned int bus,
+ unsigned int devfn)
{
struct pci_dev *dev = NULL;
while ((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) {
- if (pci_domain_nr(dev->bus) == 0 &&
- (dev->bus->number == bus && dev->devfn == devfn))
+ if (pci_domain_nr(dev->bus) == domain &&
+ (dev->bus->number == bus && dev->devfn == devfn))
return dev;
}
return NULL;
}
+EXPORT_SYMBOL(pci_get_domain_bus_and_slot);
static int match_pci_dev_by_id(struct device *dev, void *data)
{
* this file.
*/
static struct pci_dev *pci_get_dev_by_id(const struct pci_device_id *id,
- const struct pci_dev *from)
+ struct pci_dev *from)
{
struct device *dev;
struct device *dev_start = NULL;
struct pci_dev *pdev = NULL;
WARN_ON(in_interrupt());
- if (from) {
- /* FIXME
- * take the cast off, when bus_find_device is made const.
- */
- dev_start = (struct device *)&from->dev;
- }
+ if (from)
+ dev_start = &from->dev;
dev = bus_find_device(&pci_bus_type, dev_start, (void *)id,
match_pci_dev_by_id);
if (dev)
pdev = to_pci_dev(dev);
+ if (from)
+ pci_dev_put(from);
return pdev;
}
*/
struct pci_dev *pci_get_subsys(unsigned int vendor, unsigned int device,
unsigned int ss_vendor, unsigned int ss_device,
- const struct pci_dev *from)
+ struct pci_dev *from)
{
struct pci_dev *pdev;
struct pci_device_id *id;
EXPORT_SYMBOL(pci_get_device);
EXPORT_SYMBOL(pci_get_subsys);
EXPORT_SYMBOL(pci_get_slot);
-EXPORT_SYMBOL(pci_get_bus_and_slot);
EXPORT_SYMBOL(pci_get_class);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff