1 /* $NetBSD: bootinfo_biosgeom.c,v 1.22 2013/05/16 19:06:44 christos Exp $ */
2
3 /*
4 * Copyright (c) 1997
5 * Matthias Drochner. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 *
27 */
28
29 #include <sys/types.h>
30 #include <machine/disklabel.h>
31 #include <machine/cpu.h>
32
33 #include <lib/libkern/libkern.h>
34 #include <lib/libsa/stand.h>
35
36 #include "libi386.h"
37 #include "biosdisk_ll.h"
38 #include "bootinfo.h"
39
40 #ifdef BIOSDISK_EXTINFO_V3
41 static struct {
42 char *name;
43 int flag;
44 } bus_names[] = { {"ISA", BI_GEOM_BUS_ISA},
45 {"PCI", BI_GEOM_BUS_PCI},
46 {NULL, BI_GEOM_BUS_OTHER} };
47 static struct {
48 char *name;
49 int flag;
50 } iface_names[] = { {"ATA", BI_GEOM_IFACE_ATA},
51 {"ATAPI", BI_GEOM_IFACE_ATAPI},
52 {"SCSI", BI_GEOM_IFACE_SCSI},
53 {"USB", BI_GEOM_IFACE_USB},
54 {"1394", BI_GEOM_IFACE_1394},
55 {"FIBRE", BI_GEOM_IFACE_FIBRE},
56 {NULL, BI_GEOM_IFACE_OTHER} };
57 #endif
58
59 void
bi_getbiosgeom(void)60 bi_getbiosgeom(void)
61 {
62 struct btinfo_biosgeom *bibg;
63 int i, j, nvalid;
64 int nhd;
65 unsigned int cksum;
66 struct biosdisk_ll d;
67 struct biosdisk_extinfo ed;
68 char buf[BIOSDISK_DEFAULT_SECSIZE];
69
70 nhd = get_harddrives();
71 #ifdef GEOM_DEBUG
72 printf("nhd %d\n", nhd);
73 #endif
74
75 bibg = alloc(sizeof(struct btinfo_biosgeom)
76 + (nhd - 1) * sizeof(struct bi_biosgeom_entry));
77 if (bibg == NULL)
78 return;
79
80 for (i = nvalid = 0; i < MAX_BIOSDISKS && nvalid < nhd; i++) {
81
82 d.dev = 0x80 + i;
83
84 if (set_geometry(&d, &ed))
85 continue;
86 memset(&bibg->disk[nvalid], 0, sizeof(bibg->disk[nvalid]));
87
88 bibg->disk[nvalid].sec = d.sec;
89 bibg->disk[nvalid].head = d.head;
90 bibg->disk[nvalid].cyl = d.cyl;
91 bibg->disk[nvalid].dev = d.dev;
92
93 if (readsects(&d, 0, 1, buf, 0)) {
94 bibg->disk[nvalid].flags |= BI_GEOM_INVALID;
95 nvalid++;
96 continue;
97 }
98
99 #ifdef GEOM_DEBUG
100 printf("#%d: %x: C %d H %d S %d\n", nvalid,
101 d.dev, d.cyl, d.head, d.sec);
102 printf(" sz %d fl %x cyl %d head %d sec %d totsec %"PRId64" sbytes %d\n",
103 ed.size, ed.flags, ed.cyl, ed.head, ed.sec,
104 ed.totsec, ed.sbytes);
105 #endif
106
107 if (d.flags & BIOSDISK_INT13EXT) {
108 bibg->disk[nvalid].totsec = ed.totsec;
109 bibg->disk[nvalid].flags |= BI_GEOM_EXTINT13;
110 }
111 #ifdef BIOSDISK_EXTINFO_V3
112 #ifdef GEOM_DEBUG
113 printf(" edd_cfg %x, sig %x, len %x, bus %s type %s\n",
114 ed.edd_cfg, ed.devpath_sig, ed.devpath_len,
115 ed.host_bus, ed.iface_type);
116 #endif
117
118 /* The v3.0 stuff will help identify the disks */
119 if (ed.size >= offsetof(struct biosdisk_ext13info, checksum)
120 && ed.devpath_sig == EXTINFO_DEVPATH_SIGNATURE) {
121 char *cp;
122
123 for (cp = (void *)&ed.devpath_sig, cksum = 0;
124 cp <= (char *)&ed.checksum; cp++) {
125 cksum += *cp;
126 }
127 if ((cksum & 0xff) != 0)
128 bibg->disk[nvalid].flags |= BI_GEOM_BADCKSUM;
129 #ifdef GEOM_DEBUG
130 printf("checksum %x\n", cksum & 0xff);
131 #endif
132 for (j = 0; ; j++) {
133 cp = bus_names[j].name;
134 if (cp == NULL)
135 break;
136 if (strncmp(cp, ed.host_bus,
137 sizeof(ed.host_bus)) == 0)
138 break;
139 }
140 #ifdef GEOM_DEBUG
141 printf("bus %s (%x)\n", cp ? cp : "null",
142 bus_names[j].flag);
143 #endif
144 bibg->disk[nvalid].flags |= bus_names[j].flag;
145 for (j = 0; ; j++) {
146 cp = iface_names[j].name;
147 if (cp == NULL)
148 break;
149 if (strncmp(cp, ed.iface_type,
150 sizeof(ed.iface_type)) == 0)
151 break;
152 }
153 bibg->disk[nvalid].flags |= iface_names[j].flag;
154 /* Dump raw interface path and device path */
155 bibg->disk[nvalid].interface_path =
156 ed.interface_path.ip_32[0];
157 bibg->disk[nvalid].device_path =
158 ed.device_path.dp_64[0];
159 #ifdef GEOM_DEBUG
160 printf("device %s (%x) interface %x path %llx\n",
161 cp ? cp : "null",
162 iface_names[j].flag,
163 ed.interface_path.ip_32[0],
164 ed.device_path.dp_64[0]);
165 #endif
166 }
167 #endif
168
169 for (j = 0, cksum = 0; j < BIOSDISK_DEFAULT_SECSIZE; j++)
170 cksum += buf[j];
171 bibg->disk[nvalid].cksum = cksum;
172 memcpy(bibg->disk[nvalid].mbrparts, &buf[MBR_PART_OFFSET],
173 sizeof(bibg->disk[nvalid].mbrparts));
174 nvalid++;
175 }
176
177 bibg->num = nvalid;
178
179 BI_ADD(bibg, BTINFO_BIOSGEOM, sizeof(struct btinfo_biosgeom)
180 + nvalid * sizeof(struct bi_biosgeom_entry));
181 }
182