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Implement pci_find_class(9), the function to find a pci device by its class.

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Sponsored by:	The FreeBSD Foundation
Reviewed by:	jhb
MFC after:	1 week
This commit is contained in:
Konstantin Belousov 2011-07-09 14:30:13 +00:00
parent b03c679527
commit 141c08f9c0
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=223885
2 changed files with 16 additions and 0 deletions
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15
sys/dev/pci/pci.c
View File

@ -347,6 +347,21 @@ pci_find_device(uint16_t vendor, uint16_t device)
return (NULL);
}
device_t
pci_find_class(uint8_t class, uint8_t subclass)
{
struct pci_devinfo *dinfo;
STAILQ_FOREACH(dinfo, &pci_devq, pci_links) {
if (dinfo->cfg.baseclass == class &&
dinfo->cfg.subclass == subclass) {
return (dinfo->cfg.dev);
}
}
return (NULL);
}
static int
pci_printf(pcicfgregs *cfg, const char *fmt, ...)
{

1
sys/dev/pci/pcivar.h
View File

@ -457,6 +457,7 @@ pci_msix_count(device_t dev)
device_t pci_find_bsf(uint8_t, uint8_t, uint8_t);
device_t pci_find_dbsf(uint32_t, uint8_t, uint8_t, uint8_t);
device_t pci_find_device(uint16_t, uint16_t);
device_t pci_find_class(uint8_t class, uint8_t subclass);
/* Can be used by drivers to manage the MSI-X table. */
int pci_pending_msix(device_t dev, u_int index);