1 /*-
2 * Copyright (c) 1999, 2000 Matthew R. Green
3 * Copyright (c) 2001 - 2003 by Thomas Moestl <tmm@FreeBSD.org>
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
22 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
24 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
25 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * from: NetBSD: psycho.c,v 1.35 2001/09/10 16:17:06 eeh Exp
30 *
31 * $FreeBSD$
32 */
33
34 #include "opt_ofw_pci.h"
35
36 #include <sys/param.h>
37 #include <sys/kernel.h>
38 #include <sys/systm.h>
39 #include <sys/bus.h>
40
41 #include <dev/ofw/openfirm.h>
42
43 #include <machine/bus.h>
44
45 #include <sparc64/pci/ofw_pci.h>
46
47 static u_int8_t pci_bus_cnt;
48 static phandle_t *pci_bus_map;
49 static int pci_bus_map_sz;
50
51 #define PCI_BUS_MAP_INC 10
52
53 u_int8_t
54 ofw_pci_alloc_busno(phandle_t node)
55 {
56 phandle_t *om;
57 int osz;
58 u_int8_t n;
59
60 n = pci_bus_cnt++;
61 /* Establish a mapping between bus numbers and device nodes. */
62 if (n >= pci_bus_map_sz) {
63 osz = pci_bus_map_sz;
64 om = pci_bus_map;
65 pci_bus_map_sz = n + PCI_BUS_MAP_INC;
66 pci_bus_map = malloc(sizeof(*pci_bus_map) * pci_bus_map_sz,
67 M_DEVBUF, M_WAITOK | M_ZERO);
68 if (om != NULL) {
69 bcopy(om, pci_bus_map, sizeof(*om) * osz);
70 free(om, M_DEVBUF);
71 }
72 }
73 pci_bus_map[n] = node;
74 return (n);
75 }
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