libpci.h

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/*
** libpci.h for  in /home/anoman
**
** Made by Arthur Kopatsy
** Login   <kopats_a@epita.fr>
**
** Started on  Mon Apr 19 14:00:26 2004 Arthur Kopatsy
** Last update Wed Oct  6 16:16:49 2004 Vianney Rancurel
*/

#ifndef LIBPCI_H_
# define LIBPCI_H_

#include <libc.h>
#include <pcireg.h>

typedef u_int16_t pci_tag_t;

#define PCI_WAIT_TIMEOUT                        5

#define MAX_BUS                                 256
#define MAX_DEV_PER_BUS                         32
#define MAX_FUN_PER_DEV                         8

#define PCI_BUS(pci_tag)                        ((pci_tag >> 8) & (MAX_BUS - 1))
#define PCI_DEV(pci_tag)                        ((pci_tag >> 3) & (MAX_DEV_PER_BUS - 1))
#define PCI_FUN(pci_tag)                        (pci_tag & (MAX_FUN_PER_DEV - 1))

typedef struct          s_pci_device
{
  pci_tag_t             pci_tag;
  pci_reg_t             pci_id;
  pci_reg_t             pci_class;
} pci_dev_t;

/*
** Tools functions
*/

const char      *pci_vendor_name(pci_vendor_t pci_vendor);
const char      *pci_product_name(pci_vendor_t  pci_vendor,
                                  pci_product_t pci_product);

typedef int (*t_pci_find_fun)(pci_dev_t *);
int             pci_find_device(pci_dev_t       *device,
                                t_pci_find_fun  find_fun);

/*
** PCI syscalls list
*/

#define SYSPCI_DEVICES          0
#define SYSPCI_READ_REG         1
#define SYSPCI_WRITE_REG        2

int     pci_devices(paddr_t *list_addr, int *list_size);

int     pci_read_reg(pci_tag_t pci_tag, int reg_addr, int bytes, pci_reg_t *value);

int     pci_write_reg(pci_tag_t pci_tag, int reg_addr, int bytes, pci_reg_t value);

int     pci_map_reg(pci_tag_t   pci_tag,
                    int         reg_addr);

#endif /* PCI_H_ */

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