Author: kib
Date: Sat Jul 9 14:30:13 2011
New Revision: 223885
URL: http://svn.freebsd.org/changeset/base/223885
Log:
Implement pci_find_class(9), the function to find a pci device by its class.
Sponsored by: The FreeBSD Foundation
Reviewed by: jhb
MFC after: 1 week
Modified:
head/sys/dev/pci/pci.c
head/sys/dev/pci/pcivar.h
Modified: head/sys/dev/pci/pci.c
==============================================================================
--- head/sys/dev/pci/pci.c Sat Jul 9 14:29:23 2011 (r223884)
+++ head/sys/dev/pci/pci.c Sat Jul 9 14:30:13 2011 (r223885)
@@ -347,6 +347,21 @@ pci_find_device(uint16_t vendor, uint16_
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, ...)
{
Modified: head/sys/dev/pci/pcivar.h
==============================================================================
--- head/sys/dev/pci/pcivar.h Sat Jul 9 14:29:23 2011 (r223884)
+++ head/sys/dev/pci/pcivar.h Sat Jul 9 14:30:13 2011 (r223885)
@@ -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);
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