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// SPDX-License-Identifier: GPL-2.0
#include <common.h>
#include <init.h>
#include <driver.h>
#include <linux/pci.h>
/**
* pci_match_one_device - Tell if a PCI device structure has a matching
* PCI device id structure
* @id: single PCI device id structure to match
* @dev: the PCI device structure to match against
*
* Returns the matching pci_device_id structure or %NULL if there is no match.
*/
static inline const struct pci_device_id *
pci_match_one_device(const struct pci_device_id *id, const struct pci_dev *dev)
{
if ((id->vendor == PCI_ANY_ID || id->vendor == dev->vendor) &&
(id->device == PCI_ANY_ID || id->device == dev->device) &&
(id->subvendor == PCI_ANY_ID || id->subvendor == dev->subsystem_vendor) &&
(id->subdevice == PCI_ANY_ID || id->subdevice == dev->subsystem_device) &&
!((id->class ^ dev->class) & id->class_mask))
return id;
return NULL;
}
/**
* pci_match_id - See if a pci device matches a given pci_id table
* @ids: array of PCI device id structures to search in
* @dev: the PCI device structure to match against.
*
* Used by a driver to check whether a PCI device present in the
* system is in its list of supported devices. Returns the matching
* pci_device_id structure or %NULL if there is no match.
*
* Deprecated, don't use this as it will not catch any dynamic ids
* that a driver might want to check for.
*/
const struct pci_device_id *pci_match_id(const struct pci_device_id *ids,
struct pci_dev *dev)
{
if (ids) {
while (ids->vendor || ids->subvendor || ids->class_mask) {
if (pci_match_one_device(ids, dev))
return ids;
ids++;
}
}
return NULL;
}
EXPORT_SYMBOL(pci_match_id);
static int pci_match(struct device_d *dev, struct driver_d *drv)
{
struct pci_dev *pdev = to_pci_dev(dev);
struct pci_driver *pdrv = to_pci_driver(drv);
const struct pci_device_id *id;
for (id = pdrv->id_table; id->vendor; id++)
if (pci_match_one_device(id, pdev)) {
pdev->id = id;
return 0;
}
return -1;
}
static int pci_probe(struct device_d *dev)
{
struct pci_dev *pdev = to_pci_dev(dev);
struct pci_driver *pdrv = to_pci_driver(dev->driver);
return pdrv->probe(pdev, pdev->id);
}
static void pci_remove(struct device_d *dev)
{
struct pci_dev *pdev = to_pci_dev(dev);
struct pci_driver *pdrv = to_pci_driver(dev->driver);
if (pdrv->remove)
pdrv->remove(pdev);
}
struct bus_type pci_bus = {
.name = "pci",
.match = pci_match,
.probe = pci_probe,
.remove = pci_remove,
};
static int pci_bus_init(void)
{
return bus_register(&pci_bus);
}
pure_initcall(pci_bus_init);
int pci_register_driver(struct pci_driver *pdrv)
{
struct driver_d *drv = &pdrv->driver;
if (!pdrv->id_table)
return -EIO;
drv->name = pdrv->name;
drv->bus = &pci_bus;
return register_driver(drv);
}
int pci_register_device(struct pci_dev *pdev)
{
char str[6];
struct device_d *dev = &pdev->dev;
int ret;
dev_set_name(dev, "pci-%04x:%04x.", pdev->vendor, pdev->device);
dev->bus = &pci_bus;
dev->id = DEVICE_ID_DYNAMIC;
ret = register_device(dev);
if (ret)
return ret;
sprintf(str, "%02x", pdev->devfn);
dev_add_param_fixed(dev, "devfn", str);
sprintf(str, "%04x", (pdev->class >> 8) & 0xffff);
dev_add_param_fixed(dev, "class", str);
sprintf(str, "%04x", pdev->vendor);
dev_add_param_fixed(dev, "vendor", str);
sprintf(str, "%04x", pdev->device);
dev_add_param_fixed(dev, "device", str);
sprintf(str, "%04x", pdev->revision);
dev_add_param_fixed(dev, "revision", str);
return 0;
}
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