/*
       *	$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@suse.cz>
       */
      
      #include <linux/types.h>
      #include <linux/kernel.h>
      #include <linux/pci.h>
      
      int
  14  pcibios_present(void)
      {
  16  	return !list_empty(&pci_devices);
      }
      
      int
  20  pcibios_find_class(unsigned int class, unsigned short index, unsigned char *bus, unsigned char *devfn)
      {
      	const struct pci_dev *dev = NULL;
      	int cnt = 0;
      
  25  	while ((dev = pci_find_class(class, dev)))
  26  		if (index == cnt++) {
      			*bus = dev->bus->number;
      			*devfn = dev->devfn;
  29  			return PCIBIOS_SUCCESSFUL;
      		}
  31  	return PCIBIOS_DEVICE_NOT_FOUND;
      }
      
      
      int
  36  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;
      
  42  	while ((dev = pci_find_device(vendor, device, dev)))
  43  		if (index == cnt++) {
      			*bus = dev->bus->number;
      			*devfn = dev->devfn;
  46  			return PCIBIOS_SUCCESSFUL;
      		}
  48  	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);			\
      }
      
  60  PCI_OP(read, byte, char *)
  61  PCI_OP(read, word, short *)
  62  PCI_OP(read, dword, int *)
  63  PCI_OP(write, byte, char)
  64  PCI_OP(write, word, short)
  65  PCI_OP(write, dword, int)