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pci bridge: add helper function for ssvid capability. 

helper function to add ssvid capability.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Isaku Yamahata 2010-09-06 16:46:17 +09:00 committed by Michael S. Tsirkin
parent ca77089d2d
commit f4c817e000
2 changed files with 22 additions and 0 deletions
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19
hw/pci_bridge.c
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@ -32,6 +32,25 @@
#include "pci_bridge.h"
#include "pci_internals.h"
/* PCI bridge subsystem vendor ID helper functions */
#define PCI_SSVID_SIZEOF 8
#define PCI_SSVID_SVID 4
#define PCI_SSVID_SSID 6
int pci_bridge_ssvid_init(PCIDevice *dev, uint8_t offset,
uint16_t svid, uint16_t ssid)
{
int pos;
pos = pci_add_capability(dev, PCI_CAP_ID_SSVID, offset, PCI_SSVID_SIZEOF);
if (pos < 0) {
return pos;
}
pci_set_word(dev->config + pos + PCI_SSVID_SVID, svid);
pci_set_word(dev->config + pos + PCI_SSVID_SSID, ssid);
return pos;
}
/* Accessor function to get parent bridge device from pci bus. */
PCIDevice *pci_bridge_get_device(PCIBus *bus)
{

3
hw/pci_bridge.h
View File

@ -28,6 +28,9 @@
#include "pci.h"
int pci_bridge_ssvid_init(PCIDevice *dev, uint8_t offset,
uint16_t svid, uint16_t ssid);
PCIDevice *pci_bridge_get_device(PCIBus *bus);
PCIBus *pci_bridge_get_sec_bus(PCIBridge *br);