Yinghai Lu | 13f1c2a | 2005-07-08 02:49:49 +0000 | [diff] [blame] | 1 | /* (c) 2005 Linux Networx GPL see COPYING for details */ |
| 2 | |
| 3 | #include <console/console.h> |
| 4 | #include <device/device.h> |
| 5 | #include <device/pci.h> |
| 6 | #include <device/pci_ids.h> |
| 7 | #include <device/agp.h> |
| 8 | |
| 9 | static void agp_tune_dev(device_t dev) |
| 10 | { |
| 11 | unsigned cap; |
| 12 | cap = pci_find_capability(dev, PCI_CAP_ID_AGP); |
| 13 | if (!cap) { |
| 14 | return; |
| 15 | } |
| 16 | /* The OS is responsible for AGP tuning so do nothing here */ |
| 17 | } |
| 18 | |
| 19 | unsigned int agp_scan_bus(struct bus *bus, |
| 20 | unsigned min_devfn, unsigned max_devfn, unsigned int max) |
| 21 | { |
| 22 | device_t child; |
| 23 | max = pci_scan_bus(bus, min_devfn, max_devfn, max); |
| 24 | for(child = bus->children; child; child = child->sibling) { |
| 25 | if ( (child->path.u.pci.devfn < min_devfn) || |
| 26 | (child->path.u.pci.devfn > max_devfn)) |
| 27 | { |
| 28 | continue; |
| 29 | } |
| 30 | agp_tune_dev(child); |
| 31 | } |
| 32 | return max; |
| 33 | } |
| 34 | |
| 35 | unsigned int agp_scan_bridge(device_t dev, unsigned int max) |
| 36 | { |
| 37 | return do_pci_scan_bridge(dev, max, agp_scan_bus); |
| 38 | } |
| 39 | |
| 40 | /** Default device operations for AGP bridges */ |
| 41 | static struct pci_operations agp_bus_ops_pci = { |
| 42 | .set_subsystem = 0, |
| 43 | }; |
| 44 | |
| 45 | struct device_operations default_agp_ops_bus = { |
| 46 | .read_resources = pci_bus_read_resources, |
| 47 | .set_resources = pci_dev_set_resources, |
| 48 | .enable_resources = pci_bus_enable_resources, |
| 49 | .init = 0, |
| 50 | .scan_bus = agp_scan_bridge, |
| 51 | .enable = 0, |
| 52 | .reset_bus = pci_bus_reset, |
| 53 | .ops_pci = &agp_bus_ops_pci, |
| 54 | }; |