76 lines
2.4 KiB
C
76 lines
2.4 KiB
C
/*-
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* Copyright (c) 1999, 2000 Matthew R. Green
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* Copyright (c) 2001 - 2003 by Thomas Moestl <tmm@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: NetBSD: psycho.c,v 1.35 2001/09/10 16:17:06 eeh Exp
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*
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* $FreeBSD$
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*/
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#include "opt_ofw_pci.h"
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <dev/ofw/openfirm.h>
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#include <machine/bus.h>
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#include <sparc64/pci/ofw_pci.h>
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static u_int8_t pci_bus_cnt;
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static phandle_t *pci_bus_map;
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static int pci_bus_map_sz;
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#define PCI_BUS_MAP_INC 10
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u_int8_t
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ofw_pci_alloc_busno(phandle_t node)
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{
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phandle_t *om;
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int osz;
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u_int8_t n;
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n = pci_bus_cnt++;
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/* Establish a mapping between bus numbers and device nodes. */
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if (n >= pci_bus_map_sz) {
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osz = pci_bus_map_sz;
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om = pci_bus_map;
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pci_bus_map_sz = n + PCI_BUS_MAP_INC;
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pci_bus_map = malloc(sizeof(*pci_bus_map) * pci_bus_map_sz,
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M_DEVBUF, M_WAITOK | M_ZERO);
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if (om != NULL) {
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bcopy(om, pci_bus_map, sizeof(*om) * osz);
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free(om, M_DEVBUF);
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}
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}
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pci_bus_map[n] = node;
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return (n);
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}
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