1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2013 Adrian Chadd <adrian@freebsd.org> 5 * Copyright (c) 2019 Vladimir Kondratyev <wulf@FreeBSD.org> 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 AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * $FreeBSD$ 29 */ 30 31 #include <sys/types.h> 32 #include <sys/endian.h> 33 #include <sys/stat.h> 34 35 #include <err.h> 36 #include <errno.h> 37 #include <fcntl.h> 38 #include <stdio.h> 39 #include <stdlib.h> 40 #include <string.h> 41 #include <unistd.h> 42 43 #include "iwmbt_fw.h" 44 #include "iwmbt_dbg.h" 45 46 int 47 iwmbt_fw_read(struct iwmbt_firmware *fw, const char *fwname) 48 { 49 int fd; 50 struct stat sb; 51 unsigned char *buf; 52 ssize_t r; 53 int i; 54 55 fd = open(fwname, O_RDONLY); 56 if (fd < 0) { 57 warn("%s: open: %s", __func__, fwname); 58 return (0); 59 } 60 61 if (fstat(fd, &sb) != 0) { 62 warn("%s: stat: %s", __func__, fwname); 63 close(fd); 64 return (0); 65 } 66 67 buf = calloc(1, sb.st_size); 68 if (buf == NULL) { 69 warn("%s: calloc", __func__); 70 close(fd); 71 return (0); 72 } 73 74 i = 0; 75 /* XXX handle partial reads */ 76 r = read(fd, buf, sb.st_size); 77 if (r < 0) { 78 warn("%s: read", __func__); 79 free(buf); 80 close(fd); 81 return (0); 82 } 83 84 if (r != sb.st_size) { 85 iwmbt_err("read len %d != file size %d", 86 (int) r, 87 (int) sb.st_size); 88 free(buf); 89 close(fd); 90 return (0); 91 } 92 93 /* We have everything, so! */ 94 95 memset(fw, 0, sizeof(*fw)); 96 97 fw->fwname = strdup(fwname); 98 fw->len = sb.st_size; 99 fw->buf = buf; 100 101 close(fd); 102 return (1); 103 } 104 105 void 106 iwmbt_fw_free(struct iwmbt_firmware *fw) 107 { 108 if (fw->fwname) 109 free(fw->fwname); 110 if (fw->buf) 111 free(fw->buf); 112 memset(fw, 0, sizeof(*fw)); 113 } 114 115 char * 116 iwmbt_get_fwname(struct iwmbt_version *ver, struct iwmbt_boot_params *params, 117 const char *prefix, const char *suffix) 118 { 119 struct stat sb; 120 char *fwname; 121 122 switch (ver->hw_variant) { 123 case 0x07: /* 7260 */ 124 case 0x08: /* 7265 */ 125 asprintf(&fwname, "%s/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.%s", 126 prefix, 127 le16toh(ver->hw_platform), 128 le16toh(ver->hw_variant), 129 le16toh(ver->hw_revision), 130 le16toh(ver->fw_variant), 131 le16toh(ver->fw_revision), 132 le16toh(ver->fw_build_num), 133 le16toh(ver->fw_build_ww), 134 le16toh(ver->fw_build_yy), 135 suffix); 136 /* 137 * Fallback to the default firmware patch if 138 * the correct firmware patch file is not found. 139 */ 140 if (stat(fwname, &sb) != 0 && errno == ENOENT) { 141 free(fwname); 142 asprintf(&fwname, "%s/ibt-hw-%x.%x.%s", 143 prefix, 144 le16toh(ver->hw_platform), 145 le16toh(ver->hw_variant), 146 suffix); 147 } 148 break; 149 150 case 0x0b: /* 8260 */ 151 case 0x0c: /* 8265 */ 152 asprintf(&fwname, "%s/ibt-%u-%u.%s", 153 prefix, 154 le16toh(ver->hw_variant), 155 le16toh(params->dev_revid), 156 suffix); 157 break; 158 159 case 0x11: /* 9560 */ 160 case 0x12: /* 9260 */ 161 case 0x13: 162 case 0x14: /* 22161 */ 163 asprintf(&fwname, "%s/ibt-%u-%u-%u.%s", 164 prefix, 165 le16toh(ver->hw_variant), 166 le16toh(ver->hw_revision), 167 le16toh(ver->fw_revision), 168 suffix); 169 break; 170 171 default: 172 fwname = NULL; 173 } 174 175 return (fwname); 176 } 177