| /* (c) 2005 Linux Networx GPL see COPYING for details */ |
| |
| #include <console/console.h> |
| #include <device/device.h> |
| #include <device/pci.h> |
| #include <device/pci_ids.h> |
| #include <device/agp.h> |
| |
| static void agp_tune_dev(device_t dev) |
| { |
| unsigned cap; |
| cap = pci_find_capability(dev, PCI_CAP_ID_AGP); |
| if (!cap) { |
| return; |
| } |
| /* The OS is responsible for AGP tuning so do nothing here */ |
| } |
| |
| unsigned int agp_scan_bus(struct bus *bus, |
| unsigned min_devfn, unsigned max_devfn, unsigned int max) |
| { |
| device_t child; |
| max = pci_scan_bus(bus, min_devfn, max_devfn, max); |
| for(child = bus->children; child; child = child->sibling) { |
| if ( (child->path.u.pci.devfn < min_devfn) || |
| (child->path.u.pci.devfn > max_devfn)) |
| { |
| continue; |
| } |
| agp_tune_dev(child); |
| } |
| return max; |
| } |
| |
| unsigned int agp_scan_bridge(device_t dev, unsigned int max) |
| { |
| return do_pci_scan_bridge(dev, max, agp_scan_bus); |
| } |
| |
| /** Default device operations for AGP bridges */ |
| static struct pci_operations agp_bus_ops_pci = { |
| .set_subsystem = 0, |
| }; |
| |
| struct device_operations default_agp_ops_bus = { |
| .read_resources = pci_bus_read_resources, |
| .set_resources = pci_dev_set_resources, |
| .enable_resources = pci_bus_enable_resources, |
| .init = 0, |
| .scan_bus = agp_scan_bridge, |
| .enable = 0, |
| .reset_bus = pci_bus_reset, |
| .ops_pci = &agp_bus_ops_pci, |
| }; |