1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2013 Adrian Chadd <adrian@freebsd.org>
5 * Copyright (c) 2019 Vladimir Kondratyev <wulf@FreeBSD.org>
6 * Copyright (c) 2023 Future Crew LLC.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, 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
30 #include <sys/types.h>
31 #include <sys/endian.h>
32 #include <sys/stat.h>
33
34 #include <err.h>
35 #include <errno.h>
36 #include <fcntl.h>
37 #include <stdio.h>
38 #include <stdlib.h>
39 #include <string.h>
40 #include <unistd.h>
41
42 #include "iwmbt_fw.h"
43 #include "iwmbt_dbg.h"
44
45 int
iwmbt_fw_read(struct iwmbt_firmware * fw,const char * fwname)46 iwmbt_fw_read(struct iwmbt_firmware *fw, const char *fwname)
47 {
48 int fd;
49 struct stat sb;
50 unsigned char *buf;
51 ssize_t r;
52
53 fd = open(fwname, O_RDONLY);
54 if (fd < 0) {
55 warn("%s: open: %s", __func__, fwname);
56 return (0);
57 }
58
59 if (fstat(fd, &sb) != 0) {
60 warn("%s: stat: %s", __func__, fwname);
61 close(fd);
62 return (0);
63 }
64
65 buf = calloc(1, sb.st_size);
66 if (buf == NULL) {
67 warn("%s: calloc", __func__);
68 close(fd);
69 return (0);
70 }
71
72 /* XXX handle partial reads */
73 r = read(fd, buf, sb.st_size);
74 if (r < 0) {
75 warn("%s: read", __func__);
76 free(buf);
77 close(fd);
78 return (0);
79 }
80
81 if (r != sb.st_size) {
82 iwmbt_err("read len %d != file size %d",
83 (int) r,
84 (int) sb.st_size);
85 free(buf);
86 close(fd);
87 return (0);
88 }
89
90 /* We have everything, so! */
91
92 memset(fw, 0, sizeof(*fw));
93
94 fw->fwname = strdup(fwname);
95 fw->len = sb.st_size;
96 fw->buf = buf;
97
98 close(fd);
99 return (1);
100 }
101
102 void
iwmbt_fw_free(struct iwmbt_firmware * fw)103 iwmbt_fw_free(struct iwmbt_firmware *fw)
104 {
105 if (fw->fwname)
106 free(fw->fwname);
107 if (fw->buf)
108 free(fw->buf);
109 memset(fw, 0, sizeof(*fw));
110 }
111
112 char *
iwmbt_get_fwname(struct iwmbt_version * ver,struct iwmbt_boot_params * params,const char * prefix,const char * suffix)113 iwmbt_get_fwname(struct iwmbt_version *ver, struct iwmbt_boot_params *params,
114 const char *prefix, const char *suffix)
115 {
116 struct stat sb;
117 char *fwname;
118
119 switch (ver->hw_variant) {
120 case 0x07: /* 7260 */
121 case 0x08: /* 7265 */
122 asprintf(&fwname, "%s/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.%s",
123 prefix,
124 le16toh(ver->hw_platform),
125 le16toh(ver->hw_variant),
126 le16toh(ver->hw_revision),
127 le16toh(ver->fw_variant),
128 le16toh(ver->fw_revision),
129 le16toh(ver->fw_build_num),
130 le16toh(ver->fw_build_ww),
131 le16toh(ver->fw_build_yy),
132 suffix);
133 /*
134 * Fallback to the default firmware patch if
135 * the correct firmware patch file is not found.
136 */
137 if (stat(fwname, &sb) != 0 && errno == ENOENT) {
138 free(fwname);
139 asprintf(&fwname, "%s/ibt-hw-%x.%x.%s",
140 prefix,
141 le16toh(ver->hw_platform),
142 le16toh(ver->hw_variant),
143 suffix);
144 }
145 break;
146
147 case 0x0b: /* 8260 */
148 case 0x0c: /* 8265 */
149 asprintf(&fwname, "%s/ibt-%u-%u.%s",
150 prefix,
151 le16toh(ver->hw_variant),
152 le16toh(params->dev_revid),
153 suffix);
154 break;
155
156 case 0x11: /* 9560 */
157 case 0x12: /* 9260 */
158 case 0x13:
159 case 0x14: /* 22161 */
160 asprintf(&fwname, "%s/ibt-%u-%u-%u.%s",
161 prefix,
162 le16toh(ver->hw_variant),
163 le16toh(ver->hw_revision),
164 le16toh(ver->fw_revision),
165 suffix);
166 break;
167
168 default:
169 fwname = NULL;
170 }
171
172 return (fwname);
173 }
174
175 char *
iwmbt_get_fwname_tlv(struct iwmbt_version_tlv * ver,const char * prefix,const char * suffix)176 iwmbt_get_fwname_tlv(struct iwmbt_version_tlv *ver, const char *prefix,
177 const char *suffix)
178 {
179 char *fwname;
180
181 #define IWMBT_PACK_CNVX_TOP(cnvx_top) ((uint16_t)( \
182 ((cnvx_top) & 0x0f000000) >> 16 | \
183 ((cnvx_top) & 0x0000000f) << 12 | \
184 ((cnvx_top) & 0x00000ff0) >> 4))
185
186 asprintf(&fwname, "%s/ibt-%04x-%04x.%s",
187 prefix,
188 IWMBT_PACK_CNVX_TOP(ver->cnvi_top),
189 IWMBT_PACK_CNVX_TOP(ver->cnvr_top),
190 suffix);
191
192 return (fwname);
193 }
194