freebsd-dev/sys/sparc64/pci/ofw_pci.c
2005-12-03 18:11:26 +00:00

77 lines
2.4 KiB
C

/*-
* Copyright (c) 1999, 2000 Matthew R. Green
* Copyright (c) 2001 - 2003 by Thomas Moestl <tmm@FreeBSD.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* from: NetBSD: psycho.c,v 1.35 2001/09/10 16:17:06 eeh Exp
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "opt_ofw_pci.h"
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <dev/ofw/openfirm.h>
#include <machine/bus.h>
#include <sparc64/pci/ofw_pci.h>
static uint8_t pci_bus_cnt;
static phandle_t *pci_bus_map;
static int pci_bus_map_sz;
#define PCI_BUS_MAP_INC 10
uint8_t
ofw_pci_alloc_busno(phandle_t node)
{
phandle_t *om;
int osz;
uint8_t n;
n = pci_bus_cnt++;
/* Establish a mapping between bus numbers and device nodes. */
if (n >= pci_bus_map_sz) {
osz = pci_bus_map_sz;
om = pci_bus_map;
pci_bus_map_sz = n + PCI_BUS_MAP_INC;
pci_bus_map = malloc(sizeof(*pci_bus_map) * pci_bus_map_sz,
M_DEVBUF, M_WAITOK | M_ZERO);
if (om != NULL) {
bcopy(om, pci_bus_map, sizeof(*om) * osz);
free(om, M_DEVBUF);
}
}
pci_bus_map[n] = node;
return (n);
}