status_t
init_driver(void)
{
// Get handle for the pci bus.
if (get_module(B_PCI_MODULE_NAME, (module_info**)&gPCI) != B_OK)
return B_ERROR;
status_t status = gLock.Init("ATI driver lock");
if (status < B_OK)
return status;
// Get info about all the devices supported by this driver.
uint32 pciIndex = 0;
uint32 count = 0;
while (count < MAX_DEVICES) {
DeviceInfo& di = gDeviceInfo[count];
const ChipInfo* pDevice = GetNextSupportedDevice(pciIndex, di.pciInfo);
if (pDevice == NULL)
break; // all supported devices have been obtained
// Compose device name.
sprintf(di.name, "graphics/" DEVICE_FORMAT,
di.pciInfo.vendor_id, di.pciInfo.device_id,
di.pciInfo.bus, di.pciInfo.device, di.pciInfo.function);
TRACE("init_driver() match found; name: %s\n", di.name);
gDeviceNames[count] = di.name;
di.openCount = 0; // mark driver as available for R/W open
di.sharedArea = -1; // indicate shared area not yet created
di.sharedInfo = NULL;
di.pChipInfo = pDevice;
count++;
pciIndex++;
}
gDeviceNames[count] = NULL; // terminate list with null pointer
TRACE("init_driver() %ld supported devices\n", count);
return B_OK;
}
status_t
init_hardware(void)
{
// Return B_OK if a device supported by this driver is found; otherwise,
// return B_ERROR so the driver will be unloaded.
if (get_module(B_PCI_MODULE_NAME, (module_info**)&gPCI) != B_OK)
return B_ERROR; // unable to access PCI bus
// Check pci devices for a device supported by this driver.
uint32 pciIndex = 0;
pci_info pciInfo;
const ChipInfo* pDevice = GetNextSupportedDevice(pciIndex, pciInfo);
TRACE("init_hardware() - %s\n", pDevice == NULL ? "no supported devices" : "device supported");
put_module(B_PCI_MODULE_NAME); // put away the module manager
return (pDevice == NULL ? B_ERROR : B_OK);
}
