| /* |
| * $Id: compat.c,v 1.1 1998/02/16 10:35:50 mj Exp $ |
| * |
| * PCI Bus Services -- Function For Backward Compatibility |
| * |
| * Copyright 1998--2000 Martin Mares <mj@ucw.cz> |
| */ |
| |
| #include <linux/types.h> |
| #include <linux/kernel.h> |
| #include <linux/pci.h> |
| |
| int |
| pcibios_present(void) |
| { |
| return !list_empty(&pci_devices); |
| } |
| |
| int |
| pcibios_find_class(unsigned int class, unsigned short index, unsigned char *bus, unsigned char *devfn) |
| { |
| const struct pci_dev *dev = NULL; |
| int cnt = 0; |
| |
| while ((dev = pci_find_class(class, dev))) |
| if (index == cnt++) { |
| *bus = dev->bus->number; |
| *devfn = dev->devfn; |
| return PCIBIOS_SUCCESSFUL; |
| } |
| return PCIBIOS_DEVICE_NOT_FOUND; |
| } |
| |
| |
| int |
| pcibios_find_device(unsigned short vendor, unsigned short device, unsigned short index, |
| unsigned char *bus, unsigned char *devfn) |
| { |
| const struct pci_dev *dev = NULL; |
| int cnt = 0; |
| |
| while ((dev = pci_find_device(vendor, device, dev))) |
| if (index == cnt++) { |
| *bus = dev->bus->number; |
| *devfn = dev->devfn; |
| return PCIBIOS_SUCCESSFUL; |
| } |
| return PCIBIOS_DEVICE_NOT_FOUND; |
| } |
| |
| #define PCI_OP(rw,size,type) \ |
| int pcibios_##rw##_config_##size (unsigned char bus, unsigned char dev_fn, \ |
| unsigned char where, unsigned type val) \ |
| { \ |
| struct pci_dev *dev = pci_find_slot(bus, dev_fn); \ |
| if (!dev) return PCIBIOS_DEVICE_NOT_FOUND; \ |
| return pci_##rw##_config_##size(dev, where, val); \ |
| } |
| |
| PCI_OP(read, byte, char *) |
| PCI_OP(read, word, short *) |
| PCI_OP(read, dword, int *) |
| PCI_OP(write, byte, char) |
| PCI_OP(write, word, short) |
| PCI_OP(write, dword, int) |