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local
struct pci_bus pci_root
;
struct pci_dev
*pci_devices
= NULL
;
void pci_init
(void))
{
pcibios_init
();
if (!pci_present
()) {
printk
("PCI: No PCI bus detected\n");
return;
}
printk
("PCI: Probing PCI hardware\n");
memset(&pci_root
, 0, sizeof(pci_root
));
pci_root.
subordinate = pci_scan_bus
(&pci_root
);
}
struct pci_dev
*pci_find_device
(unsigned int vendor
, unsigned int device
, struct pci_dev
*from
)
{
if (!from
)
from
= pci_devices
;
else
from
= from
->next
;
while (from
&& (from
->vendor
!= vendor
|| from
->device
!= device
))
from
= from
->next
;
return from
;
}
struct pci_dev
*pci_find_class
(unsigned int class
, struct pci_dev
*from
)
{
if (!from
)
from
= pci_devices
;
else
from
= from
->next
;
while (from
&& from
->class
!= class
)
from
= from
->next
;
return from
;
}