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 * 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 29 #include <sys/types.h> 30 #include <sys/endian.h> 31 #include <sys/stat.h> 32 33 #include <err.h> 34 #include <errno.h> 35 #include <fcntl.h> 36 #include <stdio.h> 37 #include <stdlib.h> 38 #include <string.h> 39 #include <unistd.h> 40 41 #include "iwmbt_fw.h" 42 #include "iwmbt_dbg.h" 43 44 int 45 iwmbt_fw_read(struct iwmbt_firmware *fw, const char *fwname) 46 { 47 int fd; 48 struct stat sb; 49 unsigned char *buf; 50 ssize_t r; 51 52 fd = open(fwname, O_RDONLY); 53 if (fd < 0) { 54 warn("%s: open: %s", __func__, fwname); 55 return (0); 56 } 57 58 if (fstat(fd, &sb) != 0) { 59 warn("%s: stat: %s", __func__, fwname); 60 close(fd); 61 return (0); 62 } 63 64 buf = calloc(1, sb.st_size); 65 if (buf == NULL) { 66 warn("%s: calloc", __func__); 67 close(fd); 68 return (0); 69 } 70 71 /* XXX handle partial reads */ 72 r = read(fd, buf, sb.st_size); 73 if (r < 0) { 74 warn("%s: read", __func__); 75 free(buf); 76 close(fd); 77 return (0); 78 } 79 80 if (r != sb.st_size) { 81 iwmbt_err("read len %d != file size %d", 82 (int) r, 83 (int) sb.st_size); 84 free(buf); 85 close(fd); 86 return (0); 87 } 88 89 /* We have everything, so! */ 90 91 memset(fw, 0, sizeof(*fw)); 92 93 fw->fwname = strdup(fwname); 94 fw->len = sb.st_size; 95 fw->buf = buf; 96 97 close(fd); 98 return (1); 99 } 100 101 void 102 iwmbt_fw_free(struct iwmbt_firmware *fw) 103 { 104 if (fw->fwname) 105 free(fw->fwname); 106 if (fw->buf) 107 free(fw->buf); 108 memset(fw, 0, sizeof(*fw)); 109 } 110 111 char * 112 iwmbt_get_fwname(struct iwmbt_version *ver, struct iwmbt_boot_params *params, 113 const char *prefix, const char *suffix) 114 { 115 struct stat sb; 116 char *fwname; 117 118 switch (ver->hw_variant) { 119 case 0x07: /* 7260 */ 120 case 0x08: /* 7265 */ 121 asprintf(&fwname, "%s/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.%s", 122 prefix, 123 le16toh(ver->hw_platform), 124 le16toh(ver->hw_variant), 125 le16toh(ver->hw_revision), 126 le16toh(ver->fw_variant), 127 le16toh(ver->fw_revision), 128 le16toh(ver->fw_build_num), 129 le16toh(ver->fw_build_ww), 130 le16toh(ver->fw_build_yy), 131 suffix); 132 /* 133 * Fallback to the default firmware patch if 134 * the correct firmware patch file is not found. 135 */ 136 if (stat(fwname, &sb) != 0 && errno == ENOENT) { 137 free(fwname); 138 asprintf(&fwname, "%s/ibt-hw-%x.%x.%s", 139 prefix, 140 le16toh(ver->hw_platform), 141 le16toh(ver->hw_variant), 142 suffix); 143 } 144 break; 145 146 case 0x0b: /* 8260 */ 147 case 0x0c: /* 8265 */ 148 asprintf(&fwname, "%s/ibt-%u-%u.%s", 149 prefix, 150 le16toh(ver->hw_variant), 151 le16toh(params->dev_revid), 152 suffix); 153 break; 154 155 case 0x11: /* 9560 */ 156 case 0x12: /* 9260 */ 157 case 0x13: 158 case 0x14: /* 22161 */ 159 asprintf(&fwname, "%s/ibt-%u-%u-%u.%s", 160 prefix, 161 le16toh(ver->hw_variant), 162 le16toh(ver->hw_revision), 163 le16toh(ver->fw_revision), 164 suffix); 165 break; 166 167 default: 168 fwname = NULL; 169 } 170 171 return (fwname); 172 } 173