static int __devinit agp_sis_probe(struct pci_dev *pdev,
const struct pci_device_id *ent)
{
struct agp_bridge_data *bridge;
u8 cap_ptr;
cap_ptr = pci_find_capability(pdev, PCI_CAP_ID_AGP);
if (!cap_ptr)
return -ENODEV;
dev_info(&pdev->dev, "SiS chipset [%04x/%04x]\n",
pdev->vendor, pdev->device);
bridge = agp_alloc_bridge();
if (!bridge)
return -ENOMEM;
bridge->driver = &sis_driver;
bridge->dev = pdev;
bridge->capndx = cap_ptr;
get_agp_version(bridge);
/* Fill in the mode register */
pci_read_config_dword(pdev, bridge->capndx+PCI_AGP_STATUS, &bridge->mode);
sis_get_driver(bridge);
pci_set_drvdata(pdev, bridge);
return agp_add_bridge(bridge);
}
static int __devinit agp_via_probe(struct pci_dev *pdev,
const struct pci_device_id *ent)
{
struct agp_device_ids *devs = via_agp_device_ids;
struct agp_bridge_data *bridge;
int j = 0;
u8 cap_ptr;
cap_ptr = pci_find_capability(pdev, PCI_CAP_ID_AGP);
if (!cap_ptr)
return -ENODEV;
j = ent - agp_via_pci_table;
printk (KERN_INFO PFX "Detected VIA %s chipset\n", devs[j].chipset_name);
bridge = agp_alloc_bridge();
if (!bridge)
return -ENOMEM;
bridge->dev = pdev;
bridge->capndx = cap_ptr;
bridge->driver = &via_driver;
/*
* Garg, there are KT400s with KT266 IDs.
*/
if (pdev->device == PCI_DEVICE_ID_VIA_8367_0) {
/* Is there a KT400 subsystem ? */
if (pdev->subsystem_device == PCI_DEVICE_ID_VIA_8377_0) {
printk(KERN_INFO PFX "Found KT400 in disguise as a KT266.\n");
check_via_agp3(bridge);
}
}
/* If this is an AGP3 bridge, check which mode its in and adjust. */
get_agp_version(bridge);
if (bridge->major_version >= 3)
check_via_agp3(bridge);
/* Fill in the mode register */
pci_read_config_dword(pdev,
bridge->capndx+PCI_AGP_STATUS, &bridge->mode);
pci_set_drvdata(pdev, bridge);
return agp_add_bridge(bridge);
}
void agp_generic_enable(u32_t requested_mode)
{
u32_t bridge_agpstat, temp;
get_agp_version(bridge);
dbgprintf("Found an AGP %d.%d compliant device.\n",
bridge->major_version, bridge->minor_version);
bridge_agpstat = pciReadLong(bridge->PciTag,
bridge->capndx + PCI_AGP_STATUS);
bridge_agpstat = agp_collect_device_status(bridge, requested_mode, bridge_agpstat);
if (bridge_agpstat == 0)
/* Something bad happened. FIXME: Return error code? */
return;
bridge_agpstat |= AGPSTAT_AGP_ENABLE;
/* Do AGP version specific frobbing. */
if (bridge->major_version >= 3)
{
if (bridge->mode & AGPSTAT_MODE_3_0)
{
/* If we have 3.5, we can do the isoch stuff. */
if (bridge->minor_version >= 5)
agp_3_5_enable(bridge);
agp_device_command(bridge_agpstat, TRUE);
return;
}
else
{
/* Disable calibration cycle in RX91<1> when not in AGP3.0 mode of operation.*/
bridge_agpstat &= ~(7<<10) ;
temp = pciReadLong(bridge->PciTag, bridge->capndx+AGPCTRL);
temp |= (1<<9);
pciWriteLong(bridge->PciTag, bridge->capndx+AGPCTRL, temp);
dbgprintf("Device is in legacy mode,"
" falling back to 2.x\n");
}
}
/* AGP v<3 */
agp_device_command(bridge_agpstat, FALSE);
}
static int __devinit agp_sis_probe(struct pci_dev *pdev,
const struct pci_device_id *ent)
{
struct agp_device_ids *devs = sis_agp_device_ids;
struct agp_bridge_data *bridge;
u8 cap_ptr;
int j;
cap_ptr = pci_find_capability(pdev, PCI_CAP_ID_AGP);
if (!cap_ptr)
return -ENODEV;
/* probe for known chipsets */
for (j = 0; devs[j].chipset_name; j++) {
if (pdev->device == devs[j].device_id) {
printk(KERN_INFO PFX "Detected SiS %s chipset\n",
devs[j].chipset_name);
goto found;
}
}
printk(KERN_ERR PFX "Unsupported SiS chipset (device id: %04x)\n",
pdev->device);
return -ENODEV;
found:
bridge = agp_alloc_bridge();
if (!bridge)
return -ENOMEM;
bridge->driver = &sis_driver;
bridge->dev = pdev;
bridge->capndx = cap_ptr;
get_agp_version(bridge);
/* Fill in the mode register */
pci_read_config_dword(pdev, bridge->capndx+PCI_AGP_STATUS, &bridge->mode);
sis_get_driver(bridge);
pci_set_drvdata(pdev, bridge);
return agp_add_bridge(bridge);
}
