Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 1 | /* |
Peter Jones | 4e639fd | 2010-02-25 15:37:17 -0500 | [diff] [blame] | 2 | * Copyright 2007-2010 Red Hat, Inc. |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 3 | * by Peter Jones <pjones@redhat.com> |
| 4 | * Copyright 2008 IBM, Inc. |
| 5 | * by Konrad Rzeszutek <konradr@linux.vnet.ibm.com> |
| 6 | * Copyright 2008 |
| 7 | * by Konrad Rzeszutek <ketuzsezr@darnok.org> |
| 8 | * |
| 9 | * This code exposes the iSCSI Boot Format Table to userland via sysfs. |
| 10 | * |
| 11 | * This program is free software; you can redistribute it and/or modify |
| 12 | * it under the terms of the GNU General Public License v2.0 as published by |
| 13 | * the Free Software Foundation |
| 14 | * |
| 15 | * This program is distributed in the hope that it will be useful, |
| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 18 | * GNU General Public License for more details. |
| 19 | * |
| 20 | * Changelog: |
| 21 | * |
Peter Jones | 4e639fd | 2010-02-25 15:37:17 -0500 | [diff] [blame] | 22 | * 06 Jan 2010 - Peter Jones <pjones@redhat.com> |
| 23 | * New changelog entries are in the git log from now on. Not here. |
| 24 | * |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 25 | * 14 Mar 2008 - Konrad Rzeszutek <ketuzsezr@darnok.org> |
| 26 | * Updated comments and copyrights. (v0.4.9) |
| 27 | * |
| 28 | * 11 Feb 2008 - Konrad Rzeszutek <konradr@linux.vnet.ibm.com> |
| 29 | * Converted to using ibft_addr. (v0.4.8) |
| 30 | * |
| 31 | * 8 Feb 2008 - Konrad Rzeszutek <konradr@linux.vnet.ibm.com> |
| 32 | * Combined two functions in one: reserve_ibft_region. (v0.4.7) |
| 33 | * |
| 34 | * 30 Jan 2008 - Konrad Rzeszutek <konradr@linux.vnet.ibm.com> |
| 35 | * Added logic to handle IPv6 addresses. (v0.4.6) |
| 36 | * |
| 37 | * 25 Jan 2008 - Konrad Rzeszutek <konradr@linux.vnet.ibm.com> |
| 38 | * Added logic to handle badly not-to-spec iBFT. (v0.4.5) |
| 39 | * |
| 40 | * 4 Jan 2008 - Konrad Rzeszutek <konradr@linux.vnet.ibm.com> |
| 41 | * Added __init to function declarations. (v0.4.4) |
| 42 | * |
| 43 | * 21 Dec 2007 - Konrad Rzeszutek <konradr@linux.vnet.ibm.com> |
| 44 | * Updated kobject registration, combined unregister functions in one |
| 45 | * and code and style cleanup. (v0.4.3) |
| 46 | * |
| 47 | * 5 Dec 2007 - Konrad Rzeszutek <konradr@linux.vnet.ibm.com> |
| 48 | * Added end-markers to enums and re-organized kobject registration. (v0.4.2) |
| 49 | * |
| 50 | * 4 Dec 2007 - Konrad Rzeszutek <konradr@linux.vnet.ibm.com> |
| 51 | * Created 'device' sysfs link to the NIC and style cleanup. (v0.4.1) |
| 52 | * |
| 53 | * 28 Nov 2007 - Konrad Rzeszutek <konradr@linux.vnet.ibm.com> |
| 54 | * Added sysfs-ibft documentation, moved 'find_ibft' function to |
| 55 | * in its own file and added text attributes for every struct field. (v0.4) |
| 56 | * |
| 57 | * 21 Nov 2007 - Konrad Rzeszutek <konradr@linux.vnet.ibm.com> |
| 58 | * Added text attributes emulating OpenFirmware /proc/device-tree naming. |
| 59 | * Removed binary /sysfs interface (v0.3) |
| 60 | * |
| 61 | * 29 Aug 2007 - Konrad Rzeszutek <konradr@linux.vnet.ibm.com> |
| 62 | * Added functionality in setup.c to reserve iBFT region. (v0.2) |
| 63 | * |
| 64 | * 27 Aug 2007 - Konrad Rzeszutek <konradr@linux.vnet.ibm.com> |
| 65 | * First version exposing iBFT data via a binary /sysfs. (v0.1) |
| 66 | * |
| 67 | */ |
| 68 | |
| 69 | |
| 70 | #include <linux/blkdev.h> |
| 71 | #include <linux/capability.h> |
| 72 | #include <linux/ctype.h> |
| 73 | #include <linux/device.h> |
| 74 | #include <linux/err.h> |
| 75 | #include <linux/init.h> |
| 76 | #include <linux/iscsi_ibft.h> |
| 77 | #include <linux/limits.h> |
| 78 | #include <linux/module.h> |
| 79 | #include <linux/pci.h> |
| 80 | #include <linux/slab.h> |
| 81 | #include <linux/stat.h> |
| 82 | #include <linux/string.h> |
| 83 | #include <linux/types.h> |
Peter Jones | 4e639fd | 2010-02-25 15:37:17 -0500 | [diff] [blame] | 84 | #include <linux/acpi.h> |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 85 | #include <linux/iscsi_boot_sysfs.h> |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 86 | |
Peter Jones | 4e639fd | 2010-02-25 15:37:17 -0500 | [diff] [blame] | 87 | #define IBFT_ISCSI_VERSION "0.5.0" |
| 88 | #define IBFT_ISCSI_DATE "2010-Feb-25" |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 89 | |
Joe Perches | 85ee7a1 | 2011-04-23 20:38:19 -0700 | [diff] [blame] | 90 | MODULE_AUTHOR("Peter Jones <pjones@redhat.com> and " |
| 91 | "Konrad Rzeszutek <ketuzsezr@darnok.org>"); |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 92 | MODULE_DESCRIPTION("sysfs interface to BIOS iBFT information"); |
| 93 | MODULE_LICENSE("GPL"); |
| 94 | MODULE_VERSION(IBFT_ISCSI_VERSION); |
| 95 | |
Thomas Tai | 2b9ac213 | 2019-07-18 18:37:34 +0000 | [diff] [blame] | 96 | #ifndef CONFIG_ISCSI_IBFT_FIND |
| 97 | struct acpi_table_ibft *ibft_addr; |
| 98 | #endif |
| 99 | |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 100 | struct ibft_hdr { |
| 101 | u8 id; |
| 102 | u8 version; |
| 103 | u16 length; |
| 104 | u8 index; |
| 105 | u8 flags; |
| 106 | } __attribute__((__packed__)); |
| 107 | |
| 108 | struct ibft_control { |
| 109 | struct ibft_hdr hdr; |
| 110 | u16 extensions; |
| 111 | u16 initiator_off; |
| 112 | u16 nic0_off; |
| 113 | u16 tgt0_off; |
| 114 | u16 nic1_off; |
| 115 | u16 tgt1_off; |
| 116 | } __attribute__((__packed__)); |
| 117 | |
| 118 | struct ibft_initiator { |
| 119 | struct ibft_hdr hdr; |
| 120 | char isns_server[16]; |
| 121 | char slp_server[16]; |
| 122 | char pri_radius_server[16]; |
| 123 | char sec_radius_server[16]; |
| 124 | u16 initiator_name_len; |
| 125 | u16 initiator_name_off; |
| 126 | } __attribute__((__packed__)); |
| 127 | |
| 128 | struct ibft_nic { |
| 129 | struct ibft_hdr hdr; |
| 130 | char ip_addr[16]; |
| 131 | u8 subnet_mask_prefix; |
| 132 | u8 origin; |
| 133 | char gateway[16]; |
| 134 | char primary_dns[16]; |
| 135 | char secondary_dns[16]; |
| 136 | char dhcp[16]; |
| 137 | u16 vlan; |
| 138 | char mac[6]; |
| 139 | u16 pci_bdf; |
| 140 | u16 hostname_len; |
| 141 | u16 hostname_off; |
| 142 | } __attribute__((__packed__)); |
| 143 | |
| 144 | struct ibft_tgt { |
| 145 | struct ibft_hdr hdr; |
| 146 | char ip_addr[16]; |
| 147 | u16 port; |
| 148 | char lun[8]; |
| 149 | u8 chap_type; |
| 150 | u8 nic_assoc; |
| 151 | u16 tgt_name_len; |
| 152 | u16 tgt_name_off; |
| 153 | u16 chap_name_len; |
| 154 | u16 chap_name_off; |
| 155 | u16 chap_secret_len; |
| 156 | u16 chap_secret_off; |
| 157 | u16 rev_chap_name_len; |
| 158 | u16 rev_chap_name_off; |
| 159 | u16 rev_chap_secret_len; |
| 160 | u16 rev_chap_secret_off; |
| 161 | } __attribute__((__packed__)); |
| 162 | |
| 163 | /* |
| 164 | * The kobject different types and its names. |
| 165 | * |
| 166 | */ |
| 167 | enum ibft_id { |
| 168 | id_reserved = 0, /* We don't support. */ |
| 169 | id_control = 1, /* Should show up only once and is not exported. */ |
| 170 | id_initiator = 2, |
| 171 | id_nic = 3, |
| 172 | id_target = 4, |
| 173 | id_extensions = 5, /* We don't support. */ |
| 174 | id_end_marker, |
| 175 | }; |
| 176 | |
| 177 | /* |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 178 | * The kobject and attribute structures. |
| 179 | */ |
| 180 | |
| 181 | struct ibft_kobject { |
Peter Jones | 4e639fd | 2010-02-25 15:37:17 -0500 | [diff] [blame] | 182 | struct acpi_table_ibft *header; |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 183 | union { |
| 184 | struct ibft_initiator *initiator; |
| 185 | struct ibft_nic *nic; |
| 186 | struct ibft_tgt *tgt; |
| 187 | struct ibft_hdr *hdr; |
| 188 | }; |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 189 | }; |
| 190 | |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 191 | static struct iscsi_boot_kset *boot_kset; |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 192 | |
Chris Leech | e6050b6 | 2015-05-28 12:51:51 -0700 | [diff] [blame] | 193 | /* fully null address */ |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 194 | static const char nulls[16]; |
| 195 | |
Chris Leech | e6050b6 | 2015-05-28 12:51:51 -0700 | [diff] [blame] | 196 | /* IPv4-mapped IPv6 ::ffff:0.0.0.0 */ |
| 197 | static const char mapped_nulls[16] = { 0x00, 0x00, 0x00, 0x00, |
| 198 | 0x00, 0x00, 0x00, 0x00, |
| 199 | 0x00, 0x00, 0xff, 0xff, |
| 200 | 0x00, 0x00, 0x00, 0x00 }; |
| 201 | |
| 202 | static int address_not_null(u8 *ip) |
| 203 | { |
| 204 | return (memcmp(ip, nulls, 16) && memcmp(ip, mapped_nulls, 16)); |
| 205 | } |
| 206 | |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 207 | /* |
| 208 | * Helper functions to parse data properly. |
| 209 | */ |
| 210 | static ssize_t sprintf_ipaddr(char *buf, u8 *ip) |
| 211 | { |
| 212 | char *str = buf; |
| 213 | |
| 214 | if (ip[0] == 0 && ip[1] == 0 && ip[2] == 0 && ip[3] == 0 && |
| 215 | ip[4] == 0 && ip[5] == 0 && ip[6] == 0 && ip[7] == 0 && |
| 216 | ip[8] == 0 && ip[9] == 0 && ip[10] == 0xff && ip[11] == 0xff) { |
| 217 | /* |
| 218 | * IPV4 |
| 219 | */ |
Harvey Harrison | 6377943 | 2008-10-31 00:56:00 -0700 | [diff] [blame] | 220 | str += sprintf(buf, "%pI4", ip + 12); |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 221 | } else { |
| 222 | /* |
| 223 | * IPv6 |
| 224 | */ |
Harvey Harrison | 5b095d989 | 2008-10-29 12:52:50 -0700 | [diff] [blame] | 225 | str += sprintf(str, "%pI6", ip); |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 226 | } |
| 227 | str += sprintf(str, "\n"); |
| 228 | return str - buf; |
| 229 | } |
| 230 | |
| 231 | static ssize_t sprintf_string(char *str, int len, char *buf) |
| 232 | { |
| 233 | return sprintf(str, "%.*s\n", len, buf); |
| 234 | } |
| 235 | |
| 236 | /* |
| 237 | * Helper function to verify the IBFT header. |
| 238 | */ |
| 239 | static int ibft_verify_hdr(char *t, struct ibft_hdr *hdr, int id, int length) |
| 240 | { |
| 241 | if (hdr->id != id) { |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 242 | printk(KERN_ERR "iBFT error: We expected the %s " \ |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 243 | "field header.id to have %d but " \ |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 244 | "found %d instead!\n", t, id, hdr->id); |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 245 | return -ENODEV; |
| 246 | } |
| 247 | if (hdr->length != length) { |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 248 | printk(KERN_ERR "iBFT error: We expected the %s " \ |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 249 | "field header.length to have %d but " \ |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 250 | "found %d instead!\n", t, length, hdr->length); |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 251 | return -ENODEV; |
| 252 | } |
| 253 | |
| 254 | return 0; |
| 255 | } |
| 256 | |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 257 | /* |
| 258 | * Routines for parsing the iBFT data to be human readable. |
| 259 | */ |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 260 | static ssize_t ibft_attr_show_initiator(void *data, int type, char *buf) |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 261 | { |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 262 | struct ibft_kobject *entry = data; |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 263 | struct ibft_initiator *initiator = entry->initiator; |
| 264 | void *ibft_loc = entry->header; |
| 265 | char *str = buf; |
| 266 | |
| 267 | if (!initiator) |
| 268 | return 0; |
| 269 | |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 270 | switch (type) { |
| 271 | case ISCSI_BOOT_INI_INDEX: |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 272 | str += sprintf(str, "%d\n", initiator->hdr.index); |
| 273 | break; |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 274 | case ISCSI_BOOT_INI_FLAGS: |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 275 | str += sprintf(str, "%d\n", initiator->hdr.flags); |
| 276 | break; |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 277 | case ISCSI_BOOT_INI_ISNS_SERVER: |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 278 | str += sprintf_ipaddr(str, initiator->isns_server); |
| 279 | break; |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 280 | case ISCSI_BOOT_INI_SLP_SERVER: |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 281 | str += sprintf_ipaddr(str, initiator->slp_server); |
| 282 | break; |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 283 | case ISCSI_BOOT_INI_PRI_RADIUS_SERVER: |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 284 | str += sprintf_ipaddr(str, initiator->pri_radius_server); |
| 285 | break; |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 286 | case ISCSI_BOOT_INI_SEC_RADIUS_SERVER: |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 287 | str += sprintf_ipaddr(str, initiator->sec_radius_server); |
| 288 | break; |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 289 | case ISCSI_BOOT_INI_INITIATOR_NAME: |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 290 | str += sprintf_string(str, initiator->initiator_name_len, |
| 291 | (char *)ibft_loc + |
| 292 | initiator->initiator_name_off); |
| 293 | break; |
| 294 | default: |
| 295 | break; |
| 296 | } |
| 297 | |
| 298 | return str - buf; |
| 299 | } |
| 300 | |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 301 | static ssize_t ibft_attr_show_nic(void *data, int type, char *buf) |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 302 | { |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 303 | struct ibft_kobject *entry = data; |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 304 | struct ibft_nic *nic = entry->nic; |
| 305 | void *ibft_loc = entry->header; |
| 306 | char *str = buf; |
Joe Perches | 00e7825 | 2010-01-14 11:34:19 -0500 | [diff] [blame] | 307 | __be32 val; |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 308 | |
| 309 | if (!nic) |
| 310 | return 0; |
| 311 | |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 312 | switch (type) { |
| 313 | case ISCSI_BOOT_ETH_INDEX: |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 314 | str += sprintf(str, "%d\n", nic->hdr.index); |
| 315 | break; |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 316 | case ISCSI_BOOT_ETH_FLAGS: |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 317 | str += sprintf(str, "%d\n", nic->hdr.flags); |
| 318 | break; |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 319 | case ISCSI_BOOT_ETH_IP_ADDR: |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 320 | str += sprintf_ipaddr(str, nic->ip_addr); |
| 321 | break; |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 322 | case ISCSI_BOOT_ETH_SUBNET_MASK: |
Joe Perches | 00e7825 | 2010-01-14 11:34:19 -0500 | [diff] [blame] | 323 | val = cpu_to_be32(~((1 << (32-nic->subnet_mask_prefix))-1)); |
| 324 | str += sprintf(str, "%pI4", &val); |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 325 | break; |
Hannes Reinecke | 9a99425 | 2016-02-25 09:56:04 -0800 | [diff] [blame] | 326 | case ISCSI_BOOT_ETH_PREFIX_LEN: |
| 327 | str += sprintf(str, "%d\n", nic->subnet_mask_prefix); |
| 328 | break; |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 329 | case ISCSI_BOOT_ETH_ORIGIN: |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 330 | str += sprintf(str, "%d\n", nic->origin); |
| 331 | break; |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 332 | case ISCSI_BOOT_ETH_GATEWAY: |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 333 | str += sprintf_ipaddr(str, nic->gateway); |
| 334 | break; |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 335 | case ISCSI_BOOT_ETH_PRIMARY_DNS: |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 336 | str += sprintf_ipaddr(str, nic->primary_dns); |
| 337 | break; |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 338 | case ISCSI_BOOT_ETH_SECONDARY_DNS: |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 339 | str += sprintf_ipaddr(str, nic->secondary_dns); |
| 340 | break; |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 341 | case ISCSI_BOOT_ETH_DHCP: |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 342 | str += sprintf_ipaddr(str, nic->dhcp); |
| 343 | break; |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 344 | case ISCSI_BOOT_ETH_VLAN: |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 345 | str += sprintf(str, "%d\n", nic->vlan); |
| 346 | break; |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 347 | case ISCSI_BOOT_ETH_MAC: |
hartleys | 2c35294 | 2010-01-05 06:37:43 +0000 | [diff] [blame] | 348 | str += sprintf(str, "%pM\n", nic->mac); |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 349 | break; |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 350 | case ISCSI_BOOT_ETH_HOSTNAME: |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 351 | str += sprintf_string(str, nic->hostname_len, |
| 352 | (char *)ibft_loc + nic->hostname_off); |
| 353 | break; |
| 354 | default: |
| 355 | break; |
| 356 | } |
| 357 | |
| 358 | return str - buf; |
| 359 | }; |
| 360 | |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 361 | static ssize_t ibft_attr_show_target(void *data, int type, char *buf) |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 362 | { |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 363 | struct ibft_kobject *entry = data; |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 364 | struct ibft_tgt *tgt = entry->tgt; |
| 365 | void *ibft_loc = entry->header; |
| 366 | char *str = buf; |
| 367 | int i; |
| 368 | |
| 369 | if (!tgt) |
| 370 | return 0; |
| 371 | |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 372 | switch (type) { |
| 373 | case ISCSI_BOOT_TGT_INDEX: |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 374 | str += sprintf(str, "%d\n", tgt->hdr.index); |
| 375 | break; |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 376 | case ISCSI_BOOT_TGT_FLAGS: |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 377 | str += sprintf(str, "%d\n", tgt->hdr.flags); |
| 378 | break; |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 379 | case ISCSI_BOOT_TGT_IP_ADDR: |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 380 | str += sprintf_ipaddr(str, tgt->ip_addr); |
| 381 | break; |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 382 | case ISCSI_BOOT_TGT_PORT: |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 383 | str += sprintf(str, "%d\n", tgt->port); |
| 384 | break; |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 385 | case ISCSI_BOOT_TGT_LUN: |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 386 | for (i = 0; i < 8; i++) |
| 387 | str += sprintf(str, "%x", (u8)tgt->lun[i]); |
| 388 | str += sprintf(str, "\n"); |
| 389 | break; |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 390 | case ISCSI_BOOT_TGT_NIC_ASSOC: |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 391 | str += sprintf(str, "%d\n", tgt->nic_assoc); |
| 392 | break; |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 393 | case ISCSI_BOOT_TGT_CHAP_TYPE: |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 394 | str += sprintf(str, "%d\n", tgt->chap_type); |
| 395 | break; |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 396 | case ISCSI_BOOT_TGT_NAME: |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 397 | str += sprintf_string(str, tgt->tgt_name_len, |
| 398 | (char *)ibft_loc + tgt->tgt_name_off); |
| 399 | break; |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 400 | case ISCSI_BOOT_TGT_CHAP_NAME: |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 401 | str += sprintf_string(str, tgt->chap_name_len, |
| 402 | (char *)ibft_loc + tgt->chap_name_off); |
| 403 | break; |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 404 | case ISCSI_BOOT_TGT_CHAP_SECRET: |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 405 | str += sprintf_string(str, tgt->chap_secret_len, |
| 406 | (char *)ibft_loc + tgt->chap_secret_off); |
| 407 | break; |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 408 | case ISCSI_BOOT_TGT_REV_CHAP_NAME: |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 409 | str += sprintf_string(str, tgt->rev_chap_name_len, |
| 410 | (char *)ibft_loc + |
| 411 | tgt->rev_chap_name_off); |
| 412 | break; |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 413 | case ISCSI_BOOT_TGT_REV_CHAP_SECRET: |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 414 | str += sprintf_string(str, tgt->rev_chap_secret_len, |
| 415 | (char *)ibft_loc + |
| 416 | tgt->rev_chap_secret_off); |
| 417 | break; |
| 418 | default: |
| 419 | break; |
| 420 | } |
| 421 | |
| 422 | return str - buf; |
| 423 | } |
| 424 | |
David Bond | b3c8eb5 | 2016-03-23 21:49:26 -0400 | [diff] [blame] | 425 | static ssize_t ibft_attr_show_acpitbl(void *data, int type, char *buf) |
| 426 | { |
| 427 | struct ibft_kobject *entry = data; |
| 428 | char *str = buf; |
| 429 | |
| 430 | switch (type) { |
| 431 | case ISCSI_BOOT_ACPITBL_SIGNATURE: |
| 432 | str += sprintf_string(str, ACPI_NAME_SIZE, |
| 433 | entry->header->header.signature); |
| 434 | break; |
| 435 | case ISCSI_BOOT_ACPITBL_OEM_ID: |
| 436 | str += sprintf_string(str, ACPI_OEM_ID_SIZE, |
| 437 | entry->header->header.oem_id); |
| 438 | break; |
| 439 | case ISCSI_BOOT_ACPITBL_OEM_TABLE_ID: |
| 440 | str += sprintf_string(str, ACPI_OEM_TABLE_ID_SIZE, |
| 441 | entry->header->header.oem_table_id); |
| 442 | break; |
| 443 | default: |
| 444 | break; |
| 445 | } |
| 446 | |
| 447 | return str - buf; |
| 448 | } |
| 449 | |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 450 | static int __init ibft_check_device(void) |
| 451 | { |
| 452 | int len; |
| 453 | u8 *pos; |
| 454 | u8 csum = 0; |
| 455 | |
Peter Jones | 4e639fd | 2010-02-25 15:37:17 -0500 | [diff] [blame] | 456 | len = ibft_addr->header.length; |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 457 | |
| 458 | /* Sanity checking of iBFT. */ |
Peter Jones | 4e639fd | 2010-02-25 15:37:17 -0500 | [diff] [blame] | 459 | if (ibft_addr->header.revision != 1) { |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 460 | printk(KERN_ERR "iBFT module supports only revision 1, " \ |
Peter Jones | 4e639fd | 2010-02-25 15:37:17 -0500 | [diff] [blame] | 461 | "while this is %d.\n", |
| 462 | ibft_addr->header.revision); |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 463 | return -ENOENT; |
| 464 | } |
| 465 | for (pos = (u8 *)ibft_addr; pos < (u8 *)ibft_addr + len; pos++) |
| 466 | csum += *pos; |
| 467 | |
| 468 | if (csum) { |
| 469 | printk(KERN_ERR "iBFT has incorrect checksum (0x%x)!\n", csum); |
| 470 | return -ENOENT; |
| 471 | } |
| 472 | |
| 473 | return 0; |
| 474 | } |
| 475 | |
| 476 | /* |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 477 | * Helper routiners to check to determine if the entry is valid |
| 478 | * in the proper iBFT structure. |
| 479 | */ |
Al Viro | 587a1f1 | 2011-07-23 23:11:19 -0400 | [diff] [blame] | 480 | static umode_t ibft_check_nic_for(void *data, int type) |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 481 | { |
| 482 | struct ibft_kobject *entry = data; |
| 483 | struct ibft_nic *nic = entry->nic; |
Al Viro | 587a1f1 | 2011-07-23 23:11:19 -0400 | [diff] [blame] | 484 | umode_t rc = 0; |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 485 | |
| 486 | switch (type) { |
| 487 | case ISCSI_BOOT_ETH_INDEX: |
| 488 | case ISCSI_BOOT_ETH_FLAGS: |
| 489 | rc = S_IRUGO; |
| 490 | break; |
| 491 | case ISCSI_BOOT_ETH_IP_ADDR: |
Chris Leech | e6050b6 | 2015-05-28 12:51:51 -0700 | [diff] [blame] | 492 | if (address_not_null(nic->ip_addr)) |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 493 | rc = S_IRUGO; |
| 494 | break; |
Hannes Reinecke | 9a99425 | 2016-02-25 09:56:04 -0800 | [diff] [blame] | 495 | case ISCSI_BOOT_ETH_PREFIX_LEN: |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 496 | case ISCSI_BOOT_ETH_SUBNET_MASK: |
| 497 | if (nic->subnet_mask_prefix) |
| 498 | rc = S_IRUGO; |
| 499 | break; |
| 500 | case ISCSI_BOOT_ETH_ORIGIN: |
| 501 | rc = S_IRUGO; |
| 502 | break; |
| 503 | case ISCSI_BOOT_ETH_GATEWAY: |
Chris Leech | e6050b6 | 2015-05-28 12:51:51 -0700 | [diff] [blame] | 504 | if (address_not_null(nic->gateway)) |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 505 | rc = S_IRUGO; |
| 506 | break; |
| 507 | case ISCSI_BOOT_ETH_PRIMARY_DNS: |
Chris Leech | e6050b6 | 2015-05-28 12:51:51 -0700 | [diff] [blame] | 508 | if (address_not_null(nic->primary_dns)) |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 509 | rc = S_IRUGO; |
| 510 | break; |
| 511 | case ISCSI_BOOT_ETH_SECONDARY_DNS: |
Chris Leech | e6050b6 | 2015-05-28 12:51:51 -0700 | [diff] [blame] | 512 | if (address_not_null(nic->secondary_dns)) |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 513 | rc = S_IRUGO; |
| 514 | break; |
| 515 | case ISCSI_BOOT_ETH_DHCP: |
Chris Leech | e6050b6 | 2015-05-28 12:51:51 -0700 | [diff] [blame] | 516 | if (address_not_null(nic->dhcp)) |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 517 | rc = S_IRUGO; |
| 518 | break; |
| 519 | case ISCSI_BOOT_ETH_VLAN: |
| 520 | case ISCSI_BOOT_ETH_MAC: |
| 521 | rc = S_IRUGO; |
| 522 | break; |
| 523 | case ISCSI_BOOT_ETH_HOSTNAME: |
| 524 | if (nic->hostname_off) |
| 525 | rc = S_IRUGO; |
| 526 | break; |
| 527 | default: |
| 528 | break; |
| 529 | } |
| 530 | |
| 531 | return rc; |
| 532 | } |
| 533 | |
Al Viro | 587a1f1 | 2011-07-23 23:11:19 -0400 | [diff] [blame] | 534 | static umode_t __init ibft_check_tgt_for(void *data, int type) |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 535 | { |
| 536 | struct ibft_kobject *entry = data; |
| 537 | struct ibft_tgt *tgt = entry->tgt; |
Al Viro | 587a1f1 | 2011-07-23 23:11:19 -0400 | [diff] [blame] | 538 | umode_t rc = 0; |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 539 | |
| 540 | switch (type) { |
| 541 | case ISCSI_BOOT_TGT_INDEX: |
| 542 | case ISCSI_BOOT_TGT_FLAGS: |
| 543 | case ISCSI_BOOT_TGT_IP_ADDR: |
| 544 | case ISCSI_BOOT_TGT_PORT: |
| 545 | case ISCSI_BOOT_TGT_LUN: |
| 546 | case ISCSI_BOOT_TGT_NIC_ASSOC: |
| 547 | case ISCSI_BOOT_TGT_CHAP_TYPE: |
| 548 | rc = S_IRUGO; |
Gustavo A. R. Silva | 6263e82 | 2019-02-11 12:43:23 -0600 | [diff] [blame] | 549 | break; |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 550 | case ISCSI_BOOT_TGT_NAME: |
| 551 | if (tgt->tgt_name_len) |
| 552 | rc = S_IRUGO; |
| 553 | break; |
| 554 | case ISCSI_BOOT_TGT_CHAP_NAME: |
| 555 | case ISCSI_BOOT_TGT_CHAP_SECRET: |
| 556 | if (tgt->chap_name_len) |
| 557 | rc = S_IRUGO; |
| 558 | break; |
| 559 | case ISCSI_BOOT_TGT_REV_CHAP_NAME: |
| 560 | case ISCSI_BOOT_TGT_REV_CHAP_SECRET: |
| 561 | if (tgt->rev_chap_name_len) |
| 562 | rc = S_IRUGO; |
| 563 | break; |
| 564 | default: |
| 565 | break; |
| 566 | } |
| 567 | |
| 568 | return rc; |
| 569 | } |
| 570 | |
Al Viro | 587a1f1 | 2011-07-23 23:11:19 -0400 | [diff] [blame] | 571 | static umode_t __init ibft_check_initiator_for(void *data, int type) |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 572 | { |
| 573 | struct ibft_kobject *entry = data; |
| 574 | struct ibft_initiator *init = entry->initiator; |
Al Viro | 587a1f1 | 2011-07-23 23:11:19 -0400 | [diff] [blame] | 575 | umode_t rc = 0; |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 576 | |
| 577 | switch (type) { |
| 578 | case ISCSI_BOOT_INI_INDEX: |
| 579 | case ISCSI_BOOT_INI_FLAGS: |
| 580 | rc = S_IRUGO; |
| 581 | break; |
| 582 | case ISCSI_BOOT_INI_ISNS_SERVER: |
Chris Leech | e6050b6 | 2015-05-28 12:51:51 -0700 | [diff] [blame] | 583 | if (address_not_null(init->isns_server)) |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 584 | rc = S_IRUGO; |
| 585 | break; |
| 586 | case ISCSI_BOOT_INI_SLP_SERVER: |
Chris Leech | e6050b6 | 2015-05-28 12:51:51 -0700 | [diff] [blame] | 587 | if (address_not_null(init->slp_server)) |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 588 | rc = S_IRUGO; |
| 589 | break; |
| 590 | case ISCSI_BOOT_INI_PRI_RADIUS_SERVER: |
Chris Leech | e6050b6 | 2015-05-28 12:51:51 -0700 | [diff] [blame] | 591 | if (address_not_null(init->pri_radius_server)) |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 592 | rc = S_IRUGO; |
| 593 | break; |
| 594 | case ISCSI_BOOT_INI_SEC_RADIUS_SERVER: |
Chris Leech | e6050b6 | 2015-05-28 12:51:51 -0700 | [diff] [blame] | 595 | if (address_not_null(init->sec_radius_server)) |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 596 | rc = S_IRUGO; |
| 597 | break; |
| 598 | case ISCSI_BOOT_INI_INITIATOR_NAME: |
| 599 | if (init->initiator_name_len) |
| 600 | rc = S_IRUGO; |
| 601 | break; |
| 602 | default: |
| 603 | break; |
| 604 | } |
| 605 | |
| 606 | return rc; |
| 607 | } |
| 608 | |
David Bond | b3c8eb5 | 2016-03-23 21:49:26 -0400 | [diff] [blame] | 609 | static umode_t __init ibft_check_acpitbl_for(void *data, int type) |
| 610 | { |
| 611 | |
| 612 | umode_t rc = 0; |
| 613 | |
| 614 | switch (type) { |
| 615 | case ISCSI_BOOT_ACPITBL_SIGNATURE: |
| 616 | case ISCSI_BOOT_ACPITBL_OEM_ID: |
| 617 | case ISCSI_BOOT_ACPITBL_OEM_TABLE_ID: |
| 618 | rc = S_IRUGO; |
| 619 | break; |
| 620 | default: |
| 621 | break; |
| 622 | } |
| 623 | |
| 624 | return rc; |
| 625 | } |
| 626 | |
Mike Christie | f457a46 | 2011-06-24 15:11:53 -0500 | [diff] [blame] | 627 | static void ibft_kobj_release(void *data) |
| 628 | { |
| 629 | kfree(data); |
| 630 | } |
| 631 | |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 632 | /* |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 633 | * Helper function for ibft_register_kobjects. |
| 634 | */ |
Peter Jones | 4e639fd | 2010-02-25 15:37:17 -0500 | [diff] [blame] | 635 | static int __init ibft_create_kobject(struct acpi_table_ibft *header, |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 636 | struct ibft_hdr *hdr) |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 637 | { |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 638 | struct iscsi_boot_kobj *boot_kobj = NULL; |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 639 | struct ibft_kobject *ibft_kobj = NULL; |
| 640 | struct ibft_nic *nic = (struct ibft_nic *)hdr; |
| 641 | struct pci_dev *pci_dev; |
| 642 | int rc = 0; |
| 643 | |
| 644 | ibft_kobj = kzalloc(sizeof(*ibft_kobj), GFP_KERNEL); |
| 645 | if (!ibft_kobj) |
| 646 | return -ENOMEM; |
| 647 | |
| 648 | ibft_kobj->header = header; |
| 649 | ibft_kobj->hdr = hdr; |
| 650 | |
| 651 | switch (hdr->id) { |
| 652 | case id_initiator: |
| 653 | rc = ibft_verify_hdr("initiator", hdr, id_initiator, |
| 654 | sizeof(*ibft_kobj->initiator)); |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 655 | if (rc) |
| 656 | break; |
| 657 | |
| 658 | boot_kobj = iscsi_boot_create_initiator(boot_kset, hdr->index, |
| 659 | ibft_kobj, |
| 660 | ibft_attr_show_initiator, |
Mike Christie | f457a46 | 2011-06-24 15:11:53 -0500 | [diff] [blame] | 661 | ibft_check_initiator_for, |
| 662 | ibft_kobj_release); |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 663 | if (!boot_kobj) { |
| 664 | rc = -ENOMEM; |
| 665 | goto free_ibft_obj; |
| 666 | } |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 667 | break; |
| 668 | case id_nic: |
| 669 | rc = ibft_verify_hdr("ethernet", hdr, id_nic, |
| 670 | sizeof(*ibft_kobj->nic)); |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 671 | if (rc) |
| 672 | break; |
| 673 | |
| 674 | boot_kobj = iscsi_boot_create_ethernet(boot_kset, hdr->index, |
| 675 | ibft_kobj, |
| 676 | ibft_attr_show_nic, |
Mike Christie | f457a46 | 2011-06-24 15:11:53 -0500 | [diff] [blame] | 677 | ibft_check_nic_for, |
| 678 | ibft_kobj_release); |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 679 | if (!boot_kobj) { |
| 680 | rc = -ENOMEM; |
| 681 | goto free_ibft_obj; |
| 682 | } |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 683 | break; |
| 684 | case id_target: |
| 685 | rc = ibft_verify_hdr("target", hdr, id_target, |
| 686 | sizeof(*ibft_kobj->tgt)); |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 687 | if (rc) |
| 688 | break; |
| 689 | |
| 690 | boot_kobj = iscsi_boot_create_target(boot_kset, hdr->index, |
| 691 | ibft_kobj, |
| 692 | ibft_attr_show_target, |
Mike Christie | f457a46 | 2011-06-24 15:11:53 -0500 | [diff] [blame] | 693 | ibft_check_tgt_for, |
| 694 | ibft_kobj_release); |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 695 | if (!boot_kobj) { |
| 696 | rc = -ENOMEM; |
| 697 | goto free_ibft_obj; |
| 698 | } |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 699 | break; |
| 700 | case id_reserved: |
| 701 | case id_control: |
| 702 | case id_extensions: |
| 703 | /* Fields which we don't support. Ignore them */ |
| 704 | rc = 1; |
| 705 | break; |
| 706 | default: |
| 707 | printk(KERN_ERR "iBFT has unknown structure type (%d). " \ |
| 708 | "Report this bug to %.6s!\n", hdr->id, |
Peter Jones | 4e639fd | 2010-02-25 15:37:17 -0500 | [diff] [blame] | 709 | header->header.oem_id); |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 710 | rc = 1; |
| 711 | break; |
| 712 | } |
| 713 | |
| 714 | if (rc) { |
| 715 | /* Skip adding this kobject, but exit with non-fatal error. */ |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 716 | rc = 0; |
| 717 | goto free_ibft_obj; |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 718 | } |
| 719 | |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 720 | if (hdr->id == id_nic) { |
| 721 | /* |
| 722 | * We don't search for the device in other domains than |
| 723 | * zero. This is because on x86 platforms the BIOS |
| 724 | * executes only devices which are in domain 0. Furthermore, the |
| 725 | * iBFT spec doesn't have a domain id field :-( |
| 726 | */ |
| 727 | pci_dev = pci_get_bus_and_slot((nic->pci_bdf & 0xff00) >> 8, |
| 728 | (nic->pci_bdf & 0xff)); |
| 729 | if (pci_dev) { |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 730 | rc = sysfs_create_link(&boot_kobj->kobj, |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 731 | &pci_dev->dev.kobj, "device"); |
| 732 | pci_dev_put(pci_dev); |
| 733 | } |
| 734 | } |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 735 | return 0; |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 736 | |
| 737 | free_ibft_obj: |
| 738 | kfree(ibft_kobj); |
| 739 | return rc; |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 740 | } |
| 741 | |
| 742 | /* |
| 743 | * Scan the IBFT table structure for the NIC and Target fields. When |
| 744 | * found add them on the passed-in list. We do not support the other |
| 745 | * fields at this point, so they are skipped. |
| 746 | */ |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 747 | static int __init ibft_register_kobjects(struct acpi_table_ibft *header) |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 748 | { |
| 749 | struct ibft_control *control = NULL; |
David Bond | b3c8eb5 | 2016-03-23 21:49:26 -0400 | [diff] [blame] | 750 | struct iscsi_boot_kobj *boot_kobj; |
| 751 | struct ibft_kobject *ibft_kobj; |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 752 | void *ptr, *end; |
| 753 | int rc = 0; |
| 754 | u16 offset; |
| 755 | u16 eot_offset; |
| 756 | |
| 757 | control = (void *)header + sizeof(*header); |
| 758 | end = (void *)control + control->hdr.length; |
Peter Jones | 4e639fd | 2010-02-25 15:37:17 -0500 | [diff] [blame] | 759 | eot_offset = (void *)header + header->header.length - (void *)control; |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 760 | rc = ibft_verify_hdr("control", (struct ibft_hdr *)control, id_control, |
| 761 | sizeof(*control)); |
| 762 | |
| 763 | /* iBFT table safety checking */ |
| 764 | rc |= ((control->hdr.index) ? -ENODEV : 0); |
| 765 | if (rc) { |
| 766 | printk(KERN_ERR "iBFT error: Control header is invalid!\n"); |
| 767 | return rc; |
| 768 | } |
| 769 | for (ptr = &control->initiator_off; ptr < end; ptr += sizeof(u16)) { |
| 770 | offset = *(u16 *)ptr; |
Peter Jones | 4e639fd | 2010-02-25 15:37:17 -0500 | [diff] [blame] | 771 | if (offset && offset < header->header.length && |
| 772 | offset < eot_offset) { |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 773 | rc = ibft_create_kobject(header, |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 774 | (void *)header + offset); |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 775 | if (rc) |
| 776 | break; |
| 777 | } |
| 778 | } |
David Bond | b3c8eb5 | 2016-03-23 21:49:26 -0400 | [diff] [blame] | 779 | if (rc) |
| 780 | return rc; |
| 781 | |
| 782 | ibft_kobj = kzalloc(sizeof(*ibft_kobj), GFP_KERNEL); |
| 783 | if (!ibft_kobj) |
| 784 | return -ENOMEM; |
| 785 | |
| 786 | ibft_kobj->header = header; |
| 787 | ibft_kobj->hdr = NULL; /*for ibft_unregister*/ |
| 788 | |
| 789 | boot_kobj = iscsi_boot_create_acpitbl(boot_kset, 0, |
| 790 | ibft_kobj, |
| 791 | ibft_attr_show_acpitbl, |
| 792 | ibft_check_acpitbl_for, |
| 793 | ibft_kobj_release); |
| 794 | if (!boot_kobj) { |
| 795 | kfree(ibft_kobj); |
| 796 | rc = -ENOMEM; |
| 797 | } |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 798 | |
| 799 | return rc; |
| 800 | } |
| 801 | |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 802 | static void ibft_unregister(void) |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 803 | { |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 804 | struct iscsi_boot_kobj *boot_kobj, *tmp_kobj; |
| 805 | struct ibft_kobject *ibft_kobj; |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 806 | |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 807 | list_for_each_entry_safe(boot_kobj, tmp_kobj, |
| 808 | &boot_kset->kobj_list, list) { |
| 809 | ibft_kobj = boot_kobj->data; |
David Bond | b3c8eb5 | 2016-03-23 21:49:26 -0400 | [diff] [blame] | 810 | if (ibft_kobj->hdr && ibft_kobj->hdr->id == id_nic) |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 811 | sysfs_remove_link(&boot_kobj->kobj, "device"); |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 812 | }; |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 813 | } |
| 814 | |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 815 | static void ibft_cleanup(void) |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 816 | { |
Konrad Rzeszutek Wilk | a12415f | 2010-08-11 16:35:40 -0400 | [diff] [blame] | 817 | if (boot_kset) { |
| 818 | ibft_unregister(); |
| 819 | iscsi_boot_destroy_kset(boot_kset); |
| 820 | } |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 821 | } |
| 822 | |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 823 | static void __exit ibft_exit(void) |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 824 | { |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 825 | ibft_cleanup(); |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 826 | } |
| 827 | |
Yinghai Lu | 935a9fe | 2011-12-12 12:39:14 -0800 | [diff] [blame] | 828 | #ifdef CONFIG_ACPI |
| 829 | static const struct { |
| 830 | char *sign; |
| 831 | } ibft_signs[] = { |
| 832 | /* |
| 833 | * One spec says "IBFT", the other says "iBFT". We have to check |
| 834 | * for both. |
| 835 | */ |
| 836 | { ACPI_SIG_IBFT }, |
| 837 | { "iBFT" }, |
Vikas Chaudhary | 629c27a | 2014-05-13 07:41:32 -0400 | [diff] [blame] | 838 | { "BIFT" }, /* Broadcom iSCSI Offload */ |
Yinghai Lu | 935a9fe | 2011-12-12 12:39:14 -0800 | [diff] [blame] | 839 | }; |
| 840 | |
| 841 | static void __init acpi_find_ibft_region(void) |
| 842 | { |
| 843 | int i; |
| 844 | struct acpi_table_header *table = NULL; |
| 845 | |
| 846 | if (acpi_disabled) |
| 847 | return; |
| 848 | |
| 849 | for (i = 0; i < ARRAY_SIZE(ibft_signs) && !ibft_addr; i++) { |
| 850 | acpi_get_table(ibft_signs[i].sign, 0, &table); |
| 851 | ibft_addr = (struct acpi_table_ibft *)table; |
| 852 | } |
| 853 | } |
| 854 | #else |
| 855 | static void __init acpi_find_ibft_region(void) |
| 856 | { |
| 857 | } |
| 858 | #endif |
| 859 | |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 860 | /* |
| 861 | * ibft_init() - creates sysfs tree entries for the iBFT data. |
| 862 | */ |
| 863 | static int __init ibft_init(void) |
| 864 | { |
| 865 | int rc = 0; |
| 866 | |
Yinghai Lu | 935a9fe | 2011-12-12 12:39:14 -0800 | [diff] [blame] | 867 | /* |
| 868 | As on UEFI systems the setup_arch()/find_ibft_region() |
| 869 | is called before ACPI tables are parsed and it only does |
| 870 | legacy finding. |
| 871 | */ |
| 872 | if (!ibft_addr) |
| 873 | acpi_find_ibft_region(); |
| 874 | |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 875 | if (ibft_addr) { |
Yinghai Lu | 935a9fe | 2011-12-12 12:39:14 -0800 | [diff] [blame] | 876 | pr_info("iBFT detected.\n"); |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 877 | |
| 878 | rc = ibft_check_device(); |
| 879 | if (rc) |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 880 | return rc; |
| 881 | |
| 882 | boot_kset = iscsi_boot_create_kset("ibft"); |
| 883 | if (!boot_kset) |
| 884 | return -ENOMEM; |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 885 | |
| 886 | /* Scan the IBFT for data and register the kobjects. */ |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 887 | rc = ibft_register_kobjects(ibft_addr); |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 888 | if (rc) |
| 889 | goto out_free; |
| 890 | } else |
| 891 | printk(KERN_INFO "No iBFT detected.\n"); |
| 892 | |
| 893 | return 0; |
| 894 | |
| 895 | out_free: |
Mike Christie | b33a84a | 2010-04-12 18:06:18 +0000 | [diff] [blame] | 896 | ibft_cleanup(); |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 897 | return rc; |
| 898 | } |
| 899 | |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 900 | module_init(ibft_init); |
| 901 | module_exit(ibft_exit); |