/* Returns 1 if AGP or 0 if not. */
static int
drm_device_find_capability(drm_device_t *dev, int cap)
{
int ret;
if (dev->driver.device_is_agp != NULL) {
ret = (*dev->driver.device_is_agp)(dev);
if (ret != DRM_MIGHT_BE_AGP) {
return ret == 2;
}
}
#ifdef __FreeBSD__
/* Code taken from agp.c. IWBNI that was a public interface. */
u_int32_t status;
u_int8_t ptr, next;
/*
* Check the CAP_LIST bit of the PCI status register first.
*/
status = pci_read_config(dev->device, PCIR_STATUS, 2);
if (!(status & 0x10))
return 0;
/*
* Traverse the capabilities list.
*/
for (ptr = pci_read_config(dev->device, AGP_CAPPTR, 1);
ptr != 0;
ptr = next) {
u_int32_t capid = pci_read_config(dev->device, ptr, 4);
next = AGP_CAPID_GET_NEXT_PTR(capid);
/*
* If this capability entry ID is cap, then we are done.
*/
if (AGP_CAPID_GET_CAP_ID(capid) == cap)
return 1;
}
return 0;
#else
/* XXX: fill me in for non-FreeBSD */
return 1;
#endif
}
/* Returns 1 if AGP or 0 if not. */
static int
drm_device_find_capability(struct drm_device *dev, int cap)
{
#if __FreeBSD_version >= 602102
return (pci_find_cap(dev->device, cap, NULL) == 0);
#else
/* Code taken from agp.c. IWBNI that was a public interface. */
u_int32_t status;
u_int8_t ptr, next;
/*
* Check the CAP_LIST bit of the PCI status register first.
*/
status = pci_read_config(dev->device, PCIR_STATUS, 2);
if (!(status & 0x10))
return 0;
/*
* Traverse the capabilities list.
*/
for (ptr = pci_read_config(dev->device, AGP_CAPPTR, 1);
ptr != 0;
ptr = next) {
u_int32_t capid = pci_read_config(dev->device, ptr, 4);
next = AGP_CAPID_GET_NEXT_PTR(capid);
/*
* If this capability entry ID is cap, then we are done.
*/
if (AGP_CAPID_GET_CAP_ID(capid) == cap)
return 1;
}
return 0;
#endif
}