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 * $FreeBSD$ 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 54 fd = open(fwname, O_RDONLY); 55 if (fd < 0) { 56 warn("%s: open: %s", __func__, fwname); 57 return (0); 58 } 59 60 if (fstat(fd, &sb) != 0) { 61 warn("%s: stat: %s", __func__, fwname); 62 close(fd); 63 return (0); 64 } 65 66 buf = calloc(1, sb.st_size); 67 if (buf == NULL) { 68 warn("%s: calloc", __func__); 69 close(fd); 70 return (0); 71 } 72 73 /* XXX handle partial reads */ 74 r = read(fd, buf, sb.st_size); 75 if (r < 0) { 76 warn("%s: read", __func__); 77 free(buf); 78 close(fd); 79 return (0); 80 } 81 82 if (r != sb.st_size) { 83 iwmbt_err("read len %d != file size %d", 84 (int) r, 85 (int) sb.st_size); 86 free(buf); 87 close(fd); 88 return (0); 89 } 90 91 /* We have everything, so! */ 92 93 memset(fw, 0, sizeof(*fw)); 94 95 fw->fwname = strdup(fwname); 96 fw->len = sb.st_size; 97 fw->buf = buf; 98 99 close(fd); 100 return (1); 101 } 102 103 void 104 iwmbt_fw_free(struct iwmbt_firmware *fw) 105 { 106 if (fw->fwname) 107 free(fw->fwname); 108 if (fw->buf) 109 free(fw->buf); 110 memset(fw, 0, sizeof(*fw)); 111 } 112 113 char * 114 iwmbt_get_fwname(struct iwmbt_version *ver, struct iwmbt_boot_params *params, 115 const char *prefix, const char *suffix) 116 { 117 struct stat sb; 118 char *fwname; 119 120 switch (ver->hw_variant) { 121 case 0x07: /* 7260 */ 122 case 0x08: /* 7265 */ 123 asprintf(&fwname, "%s/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.%s", 124 prefix, 125 le16toh(ver->hw_platform), 126 le16toh(ver->hw_variant), 127 le16toh(ver->hw_revision), 128 le16toh(ver->fw_variant), 129 le16toh(ver->fw_revision), 130 le16toh(ver->fw_build_num), 131 le16toh(ver->fw_build_ww), 132 le16toh(ver->fw_build_yy), 133 suffix); 134 /* 135 * Fallback to the default firmware patch if 136 * the correct firmware patch file is not found. 137 */ 138 if (stat(fwname, &sb) != 0 && errno == ENOENT) { 139 free(fwname); 140 asprintf(&fwname, "%s/ibt-hw-%x.%x.%s", 141 prefix, 142 le16toh(ver->hw_platform), 143 le16toh(ver->hw_variant), 144 suffix); 145 } 146 break; 147 148 case 0x0b: /* 8260 */ 149 case 0x0c: /* 8265 */ 150 asprintf(&fwname, "%s/ibt-%u-%u.%s", 151 prefix, 152 le16toh(ver->hw_variant), 153 le16toh(params->dev_revid), 154 suffix); 155 break; 156 157 case 0x11: /* 9560 */ 158 case 0x12: /* 9260 */ 159 case 0x13: 160 case 0x14: /* 22161 */ 161 asprintf(&fwname, "%s/ibt-%u-%u-%u.%s", 162 prefix, 163 le16toh(ver->hw_variant), 164 le16toh(ver->hw_revision), 165 le16toh(ver->fw_revision), 166 suffix); 167 break; 168 169 default: 170 fwname = NULL; 171 } 172 173 return (fwname); 174 } 175