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/*
* The PCI Library -- FreeBSD /dev/pci access
*
* Copyright (c) 1999 Jari Kirma <kirma@cs.hut.fi>
* Updated in 2003 by Samy Al Bahra <samy@kerneled.com>
*
* Can be freely distributed and used under the terms of the GNU GPL.
*/
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <osreldate.h>
#include <stdint.h>
#ifdef __FreeBSD_kernel_version
# ifndef __FreeBSD_version
# define __FreeBSD_version __FreeBSD_kernel_version
# endif
#endif
#if __FreeBSD_version < 430000 && !defined(__DragonFly__)
# include <pci/pcivar.h>
# include <pci/pci_ioctl.h>
#else
# include <sys/pciio.h>
#endif
#include "internal.h"
static void
fbsd_config(struct pci_access *a)
{
pci_define_param(a, "fbsd.path", PCI_PATH_FBSD_DEVICE, "Path to the FreeBSD PCI device");
}
static int
fbsd_detect(struct pci_access *a)
{
char *name = pci_get_param(a, "fbsd.path");
if (access(name, R_OK))
{
a->warning("Cannot open %s", name);
return 0;
}
a->debug("...using %s", name);
return 1;
}
static void
fbsd_init(struct pci_access *a)
{
char *name = pci_get_param(a, "fbsd.path");
a->fd = open(name, O_RDWR, 0);
if (a->fd < 0)
a->error("fbsd_init: %s open failed", name);
}
static void
fbsd_cleanup(struct pci_access *a)
{
close(a->fd);
}
static int
fbsd_read(struct pci_dev *d, int pos, byte *buf, int len)
{
struct pci_io pi;
if (!(len == 1 || len == 2 || len == 4))
return pci_generic_block_read(d, pos, buf, len);
if (pos >= 256)
return 0;
#if __FreeBSD_version >= 700053
pi.pi_sel.pc_domain = d->domain;
#endif
pi.pi_sel.pc_bus = d->bus;
pi.pi_sel.pc_dev = d->dev;
pi.pi_sel.pc_func = d->func;
pi.pi_reg = pos;
pi.pi_width = len;
if (ioctl(d->access->fd, PCIOCREAD, &pi) < 0)
{
if (errno == ENODEV)
return 0;
d->access->error("fbsd_read: ioctl(PCIOCREAD) failed: %s", strerror(errno));
}
switch (len)
{
case 1:
buf[0] = (u8) pi.pi_data;
break;
case 2:
((u16 *) buf)[0] = cpu_to_le16((u16) pi.pi_data);
break;
case 4:
((u32 *) buf)[0] = cpu_to_le32((u32) pi.pi_data);
break;
}
return 1;
}
static int
fbsd_write(struct pci_dev *d, int pos, byte *buf, int len)
{
struct pci_io pi;
if (!(len == 1 || len == 2 || len == 4))
return pci_generic_block_write(d, pos, buf, len);
if (pos >= 256)
return 0;
#if __FreeBSD_version >= 700053
pi.pi_sel.pc_domain = d->domain;
#endif
pi.pi_sel.pc_bus = d->bus;
pi.pi_sel.pc_dev = d->dev;
pi.pi_sel.pc_func = d->func;
pi.pi_reg = pos;
pi.pi_width = len;
switch (len)
{
case 1:
pi.pi_data = buf[0];
break;
case 2:
pi.pi_data = le16_to_cpu(((u16 *) buf)[0]);
break;
case 4:
pi.pi_data = le32_to_cpu(((u32 *) buf)[0]);
break;
}
if (ioctl(d->access->fd, PCIOCWRITE, &pi) < 0)
{
if (errno == ENODEV)
return 0;
d->access->error("fbsd_write: ioctl(PCIOCWRITE) failed: %s", strerror(errno));
}
return 1;
}
struct pci_methods pm_fbsd_device = {
"fbsd-device",
"FreeBSD /dev/pci device",
fbsd_config,
fbsd_detect,
fbsd_init,
fbsd_cleanup,
pci_generic_scan,
pci_generic_fill_info,
fbsd_read,
fbsd_write,
NULL, /* read_vpd */
NULL, /* dev_init */
NULL /* dev_cleanup */
};
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