Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * ipmi_msghandler.c |
| 3 | * |
| 4 | * Incoming and outgoing message routing for an IPMI interface. |
| 5 | * |
| 6 | * Author: MontaVista Software, Inc. |
| 7 | * Corey Minyard <minyard@mvista.com> |
| 8 | * source@mvista.com |
| 9 | * |
| 10 | * Copyright 2002 MontaVista Software Inc. |
| 11 | * |
| 12 | * This program is free software; you can redistribute it and/or modify it |
| 13 | * under the terms of the GNU General Public License as published by the |
| 14 | * Free Software Foundation; either version 2 of the License, or (at your |
| 15 | * option) any later version. |
| 16 | * |
| 17 | * |
| 18 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| 19 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 20 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 21 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 22 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
| 23 | * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
| 24 | * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| 25 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR |
| 26 | * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE |
| 27 | * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 28 | * |
| 29 | * You should have received a copy of the GNU General Public License along |
| 30 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 31 | * 675 Mass Ave, Cambridge, MA 02139, USA. |
| 32 | */ |
| 33 | |
| 34 | #include <linux/config.h> |
| 35 | #include <linux/module.h> |
| 36 | #include <linux/errno.h> |
| 37 | #include <asm/system.h> |
| 38 | #include <linux/sched.h> |
| 39 | #include <linux/poll.h> |
| 40 | #include <linux/spinlock.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | #include <linux/slab.h> |
| 42 | #include <linux/ipmi.h> |
| 43 | #include <linux/ipmi_smi.h> |
| 44 | #include <linux/notifier.h> |
| 45 | #include <linux/init.h> |
| 46 | #include <linux/proc_fs.h> |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 47 | #include <linux/rcupdate.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | |
| 49 | #define PFX "IPMI message handler: " |
Corey Minyard | 1fdd75b | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 50 | |
Corey Minyard | 3225e1d | 2005-11-15 00:09:07 -0800 | [diff] [blame] | 51 | #define IPMI_DRIVER_VERSION "38.0" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | |
| 53 | static struct ipmi_recv_msg *ipmi_alloc_recv_msg(void); |
| 54 | static int ipmi_init_msghandler(void); |
| 55 | |
| 56 | static int initialized = 0; |
| 57 | |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 58 | #ifdef CONFIG_PROC_FS |
| 59 | struct proc_dir_entry *proc_ipmi_root = NULL; |
Adrian Bunk | be4f1bb | 2006-01-09 20:51:36 -0800 | [diff] [blame] | 60 | EXPORT_SYMBOL(proc_ipmi_root); |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 61 | #endif /* CONFIG_PROC_FS */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | |
| 63 | #define MAX_EVENTS_IN_QUEUE 25 |
| 64 | |
| 65 | /* Don't let a message sit in a queue forever, always time it with at lest |
| 66 | the max message timer. This is in milliseconds. */ |
| 67 | #define MAX_MSG_TIMEOUT 60000 |
| 68 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 69 | |
| 70 | /* |
| 71 | * The main "user" data structure. |
| 72 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 73 | struct ipmi_user |
| 74 | { |
| 75 | struct list_head link; |
| 76 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 77 | /* Set to "0" when the user is destroyed. */ |
| 78 | int valid; |
| 79 | |
| 80 | struct kref refcount; |
| 81 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 82 | /* The upper layer that handles receive messages. */ |
| 83 | struct ipmi_user_hndl *handler; |
| 84 | void *handler_data; |
| 85 | |
| 86 | /* The interface this user is bound to. */ |
| 87 | ipmi_smi_t intf; |
| 88 | |
| 89 | /* Does this interface receive IPMI events? */ |
| 90 | int gets_events; |
| 91 | }; |
| 92 | |
| 93 | struct cmd_rcvr |
| 94 | { |
| 95 | struct list_head link; |
| 96 | |
| 97 | ipmi_user_t user; |
| 98 | unsigned char netfn; |
| 99 | unsigned char cmd; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 100 | |
| 101 | /* |
| 102 | * This is used to form a linked lised during mass deletion. |
| 103 | * Since this is in an RCU list, we cannot use the link above |
| 104 | * or change any data until the RCU period completes. So we |
| 105 | * use this next variable during mass deletion so we can have |
| 106 | * a list and don't have to wait and restart the search on |
| 107 | * every individual deletion of a command. */ |
| 108 | struct cmd_rcvr *next; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 109 | }; |
| 110 | |
| 111 | struct seq_table |
| 112 | { |
| 113 | unsigned int inuse : 1; |
| 114 | unsigned int broadcast : 1; |
| 115 | |
| 116 | unsigned long timeout; |
| 117 | unsigned long orig_timeout; |
| 118 | unsigned int retries_left; |
| 119 | |
| 120 | /* To verify on an incoming send message response that this is |
| 121 | the message that the response is for, we keep a sequence id |
| 122 | and increment it every time we send a message. */ |
| 123 | long seqid; |
| 124 | |
| 125 | /* This is held so we can properly respond to the message on a |
| 126 | timeout, and it is used to hold the temporary data for |
| 127 | retransmission, too. */ |
| 128 | struct ipmi_recv_msg *recv_msg; |
| 129 | }; |
| 130 | |
| 131 | /* Store the information in a msgid (long) to allow us to find a |
| 132 | sequence table entry from the msgid. */ |
| 133 | #define STORE_SEQ_IN_MSGID(seq, seqid) (((seq&0xff)<<26) | (seqid&0x3ffffff)) |
| 134 | |
| 135 | #define GET_SEQ_FROM_MSGID(msgid, seq, seqid) \ |
| 136 | do { \ |
| 137 | seq = ((msgid >> 26) & 0x3f); \ |
| 138 | seqid = (msgid & 0x3fffff); \ |
Corey Minyard | e8b3361 | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 139 | } while (0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 140 | |
| 141 | #define NEXT_SEQID(seqid) (((seqid) + 1) & 0x3fffff) |
| 142 | |
| 143 | struct ipmi_channel |
| 144 | { |
| 145 | unsigned char medium; |
| 146 | unsigned char protocol; |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 147 | |
| 148 | /* My slave address. This is initialized to IPMI_BMC_SLAVE_ADDR, |
| 149 | but may be changed by the user. */ |
| 150 | unsigned char address; |
| 151 | |
| 152 | /* My LUN. This should generally stay the SMS LUN, but just in |
| 153 | case... */ |
| 154 | unsigned char lun; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | }; |
| 156 | |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 157 | #ifdef CONFIG_PROC_FS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 158 | struct ipmi_proc_entry |
| 159 | { |
| 160 | char *name; |
| 161 | struct ipmi_proc_entry *next; |
| 162 | }; |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 163 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 164 | |
| 165 | #define IPMI_IPMB_NUM_SEQ 64 |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 166 | #define IPMI_MAX_CHANNELS 16 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 167 | struct ipmi_smi |
| 168 | { |
| 169 | /* What interface number are we? */ |
| 170 | int intf_num; |
| 171 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 172 | struct kref refcount; |
| 173 | |
| 174 | /* The list of upper layers that are using me. seq_lock |
| 175 | * protects this. */ |
| 176 | struct list_head users; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 177 | |
| 178 | /* Used for wake ups at startup. */ |
| 179 | wait_queue_head_t waitq; |
| 180 | |
| 181 | /* The IPMI version of the BMC on the other end. */ |
| 182 | unsigned char version_major; |
| 183 | unsigned char version_minor; |
| 184 | |
| 185 | /* This is the lower-layer's sender routine. */ |
| 186 | struct ipmi_smi_handlers *handlers; |
| 187 | void *send_info; |
| 188 | |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 189 | #ifdef CONFIG_PROC_FS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 190 | /* A list of proc entries for this interface. This does not |
| 191 | need a lock, only one thread creates it and only one thread |
| 192 | destroys it. */ |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 193 | spinlock_t proc_entry_lock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 194 | struct ipmi_proc_entry *proc_entries; |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 195 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 196 | |
| 197 | /* A table of sequence numbers for this interface. We use the |
| 198 | sequence numbers for IPMB messages that go out of the |
| 199 | interface to match them up with their responses. A routine |
| 200 | is called periodically to time the items in this list. */ |
| 201 | spinlock_t seq_lock; |
| 202 | struct seq_table seq_table[IPMI_IPMB_NUM_SEQ]; |
| 203 | int curr_seq; |
| 204 | |
| 205 | /* Messages that were delayed for some reason (out of memory, |
| 206 | for instance), will go in here to be processed later in a |
| 207 | periodic timer interrupt. */ |
| 208 | spinlock_t waiting_msgs_lock; |
| 209 | struct list_head waiting_msgs; |
| 210 | |
| 211 | /* The list of command receivers that are registered for commands |
| 212 | on this interface. */ |
Corey Minyard | e61fb5b | 2005-11-07 01:00:05 -0800 | [diff] [blame] | 213 | struct semaphore cmd_rcvrs_lock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 214 | struct list_head cmd_rcvrs; |
| 215 | |
| 216 | /* Events that were queues because no one was there to receive |
| 217 | them. */ |
| 218 | spinlock_t events_lock; /* For dealing with event stuff. */ |
| 219 | struct list_head waiting_events; |
| 220 | unsigned int waiting_events_count; /* How many events in queue? */ |
| 221 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 222 | /* The event receiver for my BMC, only really used at panic |
| 223 | shutdown as a place to store this. */ |
| 224 | unsigned char event_receiver; |
| 225 | unsigned char event_receiver_lun; |
| 226 | unsigned char local_sel_device; |
| 227 | unsigned char local_event_generator; |
| 228 | |
| 229 | /* A cheap hack, if this is non-null and a message to an |
| 230 | interface comes in with a NULL user, call this routine with |
| 231 | it. Note that the message will still be freed by the |
| 232 | caller. This only works on the system interface. */ |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 233 | void (*null_user_handler)(ipmi_smi_t intf, struct ipmi_recv_msg *msg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 234 | |
| 235 | /* When we are scanning the channels for an SMI, this will |
| 236 | tell which channel we are scanning. */ |
| 237 | int curr_channel; |
| 238 | |
| 239 | /* Channel information */ |
| 240 | struct ipmi_channel channels[IPMI_MAX_CHANNELS]; |
| 241 | |
| 242 | /* Proc FS stuff. */ |
| 243 | struct proc_dir_entry *proc_dir; |
| 244 | char proc_dir_name[10]; |
| 245 | |
| 246 | spinlock_t counter_lock; /* For making counters atomic. */ |
| 247 | |
| 248 | /* Commands we got that were invalid. */ |
| 249 | unsigned int sent_invalid_commands; |
| 250 | |
| 251 | /* Commands we sent to the MC. */ |
| 252 | unsigned int sent_local_commands; |
| 253 | /* Responses from the MC that were delivered to a user. */ |
| 254 | unsigned int handled_local_responses; |
| 255 | /* Responses from the MC that were not delivered to a user. */ |
| 256 | unsigned int unhandled_local_responses; |
| 257 | |
| 258 | /* Commands we sent out to the IPMB bus. */ |
| 259 | unsigned int sent_ipmb_commands; |
| 260 | /* Commands sent on the IPMB that had errors on the SEND CMD */ |
| 261 | unsigned int sent_ipmb_command_errs; |
| 262 | /* Each retransmit increments this count. */ |
| 263 | unsigned int retransmitted_ipmb_commands; |
| 264 | /* When a message times out (runs out of retransmits) this is |
| 265 | incremented. */ |
| 266 | unsigned int timed_out_ipmb_commands; |
| 267 | |
| 268 | /* This is like above, but for broadcasts. Broadcasts are |
| 269 | *not* included in the above count (they are expected to |
| 270 | time out). */ |
| 271 | unsigned int timed_out_ipmb_broadcasts; |
| 272 | |
| 273 | /* Responses I have sent to the IPMB bus. */ |
| 274 | unsigned int sent_ipmb_responses; |
| 275 | |
| 276 | /* The response was delivered to the user. */ |
| 277 | unsigned int handled_ipmb_responses; |
| 278 | /* The response had invalid data in it. */ |
| 279 | unsigned int invalid_ipmb_responses; |
| 280 | /* The response didn't have anyone waiting for it. */ |
| 281 | unsigned int unhandled_ipmb_responses; |
| 282 | |
| 283 | /* Commands we sent out to the IPMB bus. */ |
| 284 | unsigned int sent_lan_commands; |
| 285 | /* Commands sent on the IPMB that had errors on the SEND CMD */ |
| 286 | unsigned int sent_lan_command_errs; |
| 287 | /* Each retransmit increments this count. */ |
| 288 | unsigned int retransmitted_lan_commands; |
| 289 | /* When a message times out (runs out of retransmits) this is |
| 290 | incremented. */ |
| 291 | unsigned int timed_out_lan_commands; |
| 292 | |
| 293 | /* Responses I have sent to the IPMB bus. */ |
| 294 | unsigned int sent_lan_responses; |
| 295 | |
| 296 | /* The response was delivered to the user. */ |
| 297 | unsigned int handled_lan_responses; |
| 298 | /* The response had invalid data in it. */ |
| 299 | unsigned int invalid_lan_responses; |
| 300 | /* The response didn't have anyone waiting for it. */ |
| 301 | unsigned int unhandled_lan_responses; |
| 302 | |
| 303 | /* The command was delivered to the user. */ |
| 304 | unsigned int handled_commands; |
| 305 | /* The command had invalid data in it. */ |
| 306 | unsigned int invalid_commands; |
| 307 | /* The command didn't have anyone waiting for it. */ |
| 308 | unsigned int unhandled_commands; |
| 309 | |
| 310 | /* Invalid data in an event. */ |
| 311 | unsigned int invalid_events; |
| 312 | /* Events that were received with the proper format. */ |
| 313 | unsigned int events; |
| 314 | }; |
| 315 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 316 | /* Used to mark an interface entry that cannot be used but is not a |
| 317 | * free entry, either, primarily used at creation and deletion time so |
| 318 | * a slot doesn't get reused too quickly. */ |
| 319 | #define IPMI_INVALID_INTERFACE_ENTRY ((ipmi_smi_t) ((long) 1)) |
| 320 | #define IPMI_INVALID_INTERFACE(i) (((i) == NULL) \ |
| 321 | || (i == IPMI_INVALID_INTERFACE_ENTRY)) |
| 322 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 323 | #define MAX_IPMI_INTERFACES 4 |
| 324 | static ipmi_smi_t ipmi_interfaces[MAX_IPMI_INTERFACES]; |
| 325 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 326 | /* Directly protects the ipmi_interfaces data structure. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 327 | static DEFINE_SPINLOCK(interfaces_lock); |
| 328 | |
| 329 | /* List of watchers that want to know when smi's are added and |
| 330 | deleted. */ |
| 331 | static struct list_head smi_watchers = LIST_HEAD_INIT(smi_watchers); |
| 332 | static DECLARE_RWSEM(smi_watchers_sem); |
| 333 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 334 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 335 | static void free_recv_msg_list(struct list_head *q) |
| 336 | { |
| 337 | struct ipmi_recv_msg *msg, *msg2; |
| 338 | |
| 339 | list_for_each_entry_safe(msg, msg2, q, link) { |
| 340 | list_del(&msg->link); |
| 341 | ipmi_free_recv_msg(msg); |
| 342 | } |
| 343 | } |
| 344 | |
| 345 | static void clean_up_interface_data(ipmi_smi_t intf) |
| 346 | { |
| 347 | int i; |
| 348 | struct cmd_rcvr *rcvr, *rcvr2; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 349 | struct list_head list; |
| 350 | |
| 351 | free_recv_msg_list(&intf->waiting_msgs); |
| 352 | free_recv_msg_list(&intf->waiting_events); |
| 353 | |
| 354 | /* Wholesale remove all the entries from the list in the |
| 355 | * interface and wait for RCU to know that none are in use. */ |
Corey Minyard | e61fb5b | 2005-11-07 01:00:05 -0800 | [diff] [blame] | 356 | down(&intf->cmd_rcvrs_lock); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 357 | list_add_rcu(&list, &intf->cmd_rcvrs); |
| 358 | list_del_rcu(&intf->cmd_rcvrs); |
Corey Minyard | e61fb5b | 2005-11-07 01:00:05 -0800 | [diff] [blame] | 359 | up(&intf->cmd_rcvrs_lock); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 360 | synchronize_rcu(); |
| 361 | |
| 362 | list_for_each_entry_safe(rcvr, rcvr2, &list, link) |
| 363 | kfree(rcvr); |
| 364 | |
| 365 | for (i = 0; i < IPMI_IPMB_NUM_SEQ; i++) { |
| 366 | if ((intf->seq_table[i].inuse) |
| 367 | && (intf->seq_table[i].recv_msg)) |
| 368 | { |
| 369 | ipmi_free_recv_msg(intf->seq_table[i].recv_msg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 370 | } |
| 371 | } |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 372 | } |
| 373 | |
| 374 | static void intf_free(struct kref *ref) |
| 375 | { |
| 376 | ipmi_smi_t intf = container_of(ref, struct ipmi_smi, refcount); |
| 377 | |
| 378 | clean_up_interface_data(intf); |
| 379 | kfree(intf); |
| 380 | } |
| 381 | |
| 382 | int ipmi_smi_watcher_register(struct ipmi_smi_watcher *watcher) |
| 383 | { |
| 384 | int i; |
| 385 | unsigned long flags; |
| 386 | |
| 387 | down_write(&smi_watchers_sem); |
| 388 | list_add(&(watcher->link), &smi_watchers); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 389 | up_write(&smi_watchers_sem); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 390 | spin_lock_irqsave(&interfaces_lock, flags); |
| 391 | for (i = 0; i < MAX_IPMI_INTERFACES; i++) { |
| 392 | ipmi_smi_t intf = ipmi_interfaces[i]; |
| 393 | if (IPMI_INVALID_INTERFACE(intf)) |
| 394 | continue; |
| 395 | spin_unlock_irqrestore(&interfaces_lock, flags); |
| 396 | watcher->new_smi(i); |
| 397 | spin_lock_irqsave(&interfaces_lock, flags); |
| 398 | } |
| 399 | spin_unlock_irqrestore(&interfaces_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 400 | return 0; |
| 401 | } |
| 402 | |
| 403 | int ipmi_smi_watcher_unregister(struct ipmi_smi_watcher *watcher) |
| 404 | { |
| 405 | down_write(&smi_watchers_sem); |
| 406 | list_del(&(watcher->link)); |
| 407 | up_write(&smi_watchers_sem); |
| 408 | return 0; |
| 409 | } |
| 410 | |
| 411 | static void |
| 412 | call_smi_watchers(int i) |
| 413 | { |
| 414 | struct ipmi_smi_watcher *w; |
| 415 | |
| 416 | down_read(&smi_watchers_sem); |
| 417 | list_for_each_entry(w, &smi_watchers, link) { |
| 418 | if (try_module_get(w->owner)) { |
| 419 | w->new_smi(i); |
| 420 | module_put(w->owner); |
| 421 | } |
| 422 | } |
| 423 | up_read(&smi_watchers_sem); |
| 424 | } |
| 425 | |
| 426 | static int |
| 427 | ipmi_addr_equal(struct ipmi_addr *addr1, struct ipmi_addr *addr2) |
| 428 | { |
| 429 | if (addr1->addr_type != addr2->addr_type) |
| 430 | return 0; |
| 431 | |
| 432 | if (addr1->channel != addr2->channel) |
| 433 | return 0; |
| 434 | |
| 435 | if (addr1->addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) { |
| 436 | struct ipmi_system_interface_addr *smi_addr1 |
| 437 | = (struct ipmi_system_interface_addr *) addr1; |
| 438 | struct ipmi_system_interface_addr *smi_addr2 |
| 439 | = (struct ipmi_system_interface_addr *) addr2; |
| 440 | return (smi_addr1->lun == smi_addr2->lun); |
| 441 | } |
| 442 | |
| 443 | if ((addr1->addr_type == IPMI_IPMB_ADDR_TYPE) |
| 444 | || (addr1->addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE)) |
| 445 | { |
| 446 | struct ipmi_ipmb_addr *ipmb_addr1 |
| 447 | = (struct ipmi_ipmb_addr *) addr1; |
| 448 | struct ipmi_ipmb_addr *ipmb_addr2 |
| 449 | = (struct ipmi_ipmb_addr *) addr2; |
| 450 | |
| 451 | return ((ipmb_addr1->slave_addr == ipmb_addr2->slave_addr) |
| 452 | && (ipmb_addr1->lun == ipmb_addr2->lun)); |
| 453 | } |
| 454 | |
| 455 | if (addr1->addr_type == IPMI_LAN_ADDR_TYPE) { |
| 456 | struct ipmi_lan_addr *lan_addr1 |
| 457 | = (struct ipmi_lan_addr *) addr1; |
| 458 | struct ipmi_lan_addr *lan_addr2 |
| 459 | = (struct ipmi_lan_addr *) addr2; |
| 460 | |
| 461 | return ((lan_addr1->remote_SWID == lan_addr2->remote_SWID) |
| 462 | && (lan_addr1->local_SWID == lan_addr2->local_SWID) |
| 463 | && (lan_addr1->session_handle |
| 464 | == lan_addr2->session_handle) |
| 465 | && (lan_addr1->lun == lan_addr2->lun)); |
| 466 | } |
| 467 | |
| 468 | return 1; |
| 469 | } |
| 470 | |
| 471 | int ipmi_validate_addr(struct ipmi_addr *addr, int len) |
| 472 | { |
| 473 | if (len < sizeof(struct ipmi_system_interface_addr)) { |
| 474 | return -EINVAL; |
| 475 | } |
| 476 | |
| 477 | if (addr->addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) { |
| 478 | if (addr->channel != IPMI_BMC_CHANNEL) |
| 479 | return -EINVAL; |
| 480 | return 0; |
| 481 | } |
| 482 | |
| 483 | if ((addr->channel == IPMI_BMC_CHANNEL) |
Jayachandran C | 12fc1d7 | 2006-02-03 03:04:51 -0800 | [diff] [blame^] | 484 | || (addr->channel >= IPMI_MAX_CHANNELS) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 485 | || (addr->channel < 0)) |
| 486 | return -EINVAL; |
| 487 | |
| 488 | if ((addr->addr_type == IPMI_IPMB_ADDR_TYPE) |
| 489 | || (addr->addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE)) |
| 490 | { |
| 491 | if (len < sizeof(struct ipmi_ipmb_addr)) { |
| 492 | return -EINVAL; |
| 493 | } |
| 494 | return 0; |
| 495 | } |
| 496 | |
| 497 | if (addr->addr_type == IPMI_LAN_ADDR_TYPE) { |
| 498 | if (len < sizeof(struct ipmi_lan_addr)) { |
| 499 | return -EINVAL; |
| 500 | } |
| 501 | return 0; |
| 502 | } |
| 503 | |
| 504 | return -EINVAL; |
| 505 | } |
| 506 | |
| 507 | unsigned int ipmi_addr_length(int addr_type) |
| 508 | { |
| 509 | if (addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) |
| 510 | return sizeof(struct ipmi_system_interface_addr); |
| 511 | |
| 512 | if ((addr_type == IPMI_IPMB_ADDR_TYPE) |
| 513 | || (addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE)) |
| 514 | { |
| 515 | return sizeof(struct ipmi_ipmb_addr); |
| 516 | } |
| 517 | |
| 518 | if (addr_type == IPMI_LAN_ADDR_TYPE) |
| 519 | return sizeof(struct ipmi_lan_addr); |
| 520 | |
| 521 | return 0; |
| 522 | } |
| 523 | |
| 524 | static void deliver_response(struct ipmi_recv_msg *msg) |
| 525 | { |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 526 | if (! msg->user) { |
| 527 | ipmi_smi_t intf = msg->user_msg_data; |
| 528 | unsigned long flags; |
| 529 | |
| 530 | /* Special handling for NULL users. */ |
| 531 | if (intf->null_user_handler) { |
| 532 | intf->null_user_handler(intf, msg); |
| 533 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 534 | intf->handled_local_responses++; |
| 535 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 536 | } else { |
| 537 | /* No handler, so give up. */ |
| 538 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 539 | intf->unhandled_local_responses++; |
| 540 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 541 | } |
| 542 | ipmi_free_recv_msg(msg); |
| 543 | } else { |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 544 | ipmi_user_t user = msg->user; |
| 545 | user->handler->ipmi_recv_hndl(msg, user->handler_data); |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 546 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 547 | } |
| 548 | |
| 549 | /* Find the next sequence number not being used and add the given |
| 550 | message with the given timeout to the sequence table. This must be |
| 551 | called with the interface's seq_lock held. */ |
| 552 | static int intf_next_seq(ipmi_smi_t intf, |
| 553 | struct ipmi_recv_msg *recv_msg, |
| 554 | unsigned long timeout, |
| 555 | int retries, |
| 556 | int broadcast, |
| 557 | unsigned char *seq, |
| 558 | long *seqid) |
| 559 | { |
| 560 | int rv = 0; |
| 561 | unsigned int i; |
| 562 | |
Corey Minyard | e8b3361 | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 563 | for (i = intf->curr_seq; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 564 | (i+1)%IPMI_IPMB_NUM_SEQ != intf->curr_seq; |
Corey Minyard | e8b3361 | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 565 | i = (i+1)%IPMI_IPMB_NUM_SEQ) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 566 | { |
| 567 | if (! intf->seq_table[i].inuse) |
| 568 | break; |
| 569 | } |
| 570 | |
| 571 | if (! intf->seq_table[i].inuse) { |
| 572 | intf->seq_table[i].recv_msg = recv_msg; |
| 573 | |
| 574 | /* Start with the maximum timeout, when the send response |
| 575 | comes in we will start the real timer. */ |
| 576 | intf->seq_table[i].timeout = MAX_MSG_TIMEOUT; |
| 577 | intf->seq_table[i].orig_timeout = timeout; |
| 578 | intf->seq_table[i].retries_left = retries; |
| 579 | intf->seq_table[i].broadcast = broadcast; |
| 580 | intf->seq_table[i].inuse = 1; |
| 581 | intf->seq_table[i].seqid = NEXT_SEQID(intf->seq_table[i].seqid); |
| 582 | *seq = i; |
| 583 | *seqid = intf->seq_table[i].seqid; |
| 584 | intf->curr_seq = (i+1)%IPMI_IPMB_NUM_SEQ; |
| 585 | } else { |
| 586 | rv = -EAGAIN; |
| 587 | } |
| 588 | |
| 589 | return rv; |
| 590 | } |
| 591 | |
| 592 | /* Return the receive message for the given sequence number and |
| 593 | release the sequence number so it can be reused. Some other data |
| 594 | is passed in to be sure the message matches up correctly (to help |
| 595 | guard against message coming in after their timeout and the |
| 596 | sequence number being reused). */ |
| 597 | static int intf_find_seq(ipmi_smi_t intf, |
| 598 | unsigned char seq, |
| 599 | short channel, |
| 600 | unsigned char cmd, |
| 601 | unsigned char netfn, |
| 602 | struct ipmi_addr *addr, |
| 603 | struct ipmi_recv_msg **recv_msg) |
| 604 | { |
| 605 | int rv = -ENODEV; |
| 606 | unsigned long flags; |
| 607 | |
| 608 | if (seq >= IPMI_IPMB_NUM_SEQ) |
| 609 | return -EINVAL; |
| 610 | |
| 611 | spin_lock_irqsave(&(intf->seq_lock), flags); |
| 612 | if (intf->seq_table[seq].inuse) { |
| 613 | struct ipmi_recv_msg *msg = intf->seq_table[seq].recv_msg; |
| 614 | |
| 615 | if ((msg->addr.channel == channel) |
| 616 | && (msg->msg.cmd == cmd) |
| 617 | && (msg->msg.netfn == netfn) |
| 618 | && (ipmi_addr_equal(addr, &(msg->addr)))) |
| 619 | { |
| 620 | *recv_msg = msg; |
| 621 | intf->seq_table[seq].inuse = 0; |
| 622 | rv = 0; |
| 623 | } |
| 624 | } |
| 625 | spin_unlock_irqrestore(&(intf->seq_lock), flags); |
| 626 | |
| 627 | return rv; |
| 628 | } |
| 629 | |
| 630 | |
| 631 | /* Start the timer for a specific sequence table entry. */ |
| 632 | static int intf_start_seq_timer(ipmi_smi_t intf, |
| 633 | long msgid) |
| 634 | { |
| 635 | int rv = -ENODEV; |
| 636 | unsigned long flags; |
| 637 | unsigned char seq; |
| 638 | unsigned long seqid; |
| 639 | |
| 640 | |
| 641 | GET_SEQ_FROM_MSGID(msgid, seq, seqid); |
| 642 | |
| 643 | spin_lock_irqsave(&(intf->seq_lock), flags); |
| 644 | /* We do this verification because the user can be deleted |
| 645 | while a message is outstanding. */ |
| 646 | if ((intf->seq_table[seq].inuse) |
| 647 | && (intf->seq_table[seq].seqid == seqid)) |
| 648 | { |
| 649 | struct seq_table *ent = &(intf->seq_table[seq]); |
| 650 | ent->timeout = ent->orig_timeout; |
| 651 | rv = 0; |
| 652 | } |
| 653 | spin_unlock_irqrestore(&(intf->seq_lock), flags); |
| 654 | |
| 655 | return rv; |
| 656 | } |
| 657 | |
| 658 | /* Got an error for the send message for a specific sequence number. */ |
| 659 | static int intf_err_seq(ipmi_smi_t intf, |
| 660 | long msgid, |
| 661 | unsigned int err) |
| 662 | { |
| 663 | int rv = -ENODEV; |
| 664 | unsigned long flags; |
| 665 | unsigned char seq; |
| 666 | unsigned long seqid; |
| 667 | struct ipmi_recv_msg *msg = NULL; |
| 668 | |
| 669 | |
| 670 | GET_SEQ_FROM_MSGID(msgid, seq, seqid); |
| 671 | |
| 672 | spin_lock_irqsave(&(intf->seq_lock), flags); |
| 673 | /* We do this verification because the user can be deleted |
| 674 | while a message is outstanding. */ |
| 675 | if ((intf->seq_table[seq].inuse) |
| 676 | && (intf->seq_table[seq].seqid == seqid)) |
| 677 | { |
| 678 | struct seq_table *ent = &(intf->seq_table[seq]); |
| 679 | |
| 680 | ent->inuse = 0; |
| 681 | msg = ent->recv_msg; |
| 682 | rv = 0; |
| 683 | } |
| 684 | spin_unlock_irqrestore(&(intf->seq_lock), flags); |
| 685 | |
| 686 | if (msg) { |
| 687 | msg->recv_type = IPMI_RESPONSE_RECV_TYPE; |
| 688 | msg->msg_data[0] = err; |
| 689 | msg->msg.netfn |= 1; /* Convert to a response. */ |
| 690 | msg->msg.data_len = 1; |
| 691 | msg->msg.data = msg->msg_data; |
| 692 | deliver_response(msg); |
| 693 | } |
| 694 | |
| 695 | return rv; |
| 696 | } |
| 697 | |
| 698 | |
| 699 | int ipmi_create_user(unsigned int if_num, |
| 700 | struct ipmi_user_hndl *handler, |
| 701 | void *handler_data, |
| 702 | ipmi_user_t *user) |
| 703 | { |
| 704 | unsigned long flags; |
| 705 | ipmi_user_t new_user; |
| 706 | int rv = 0; |
| 707 | ipmi_smi_t intf; |
| 708 | |
| 709 | /* There is no module usecount here, because it's not |
| 710 | required. Since this can only be used by and called from |
| 711 | other modules, they will implicitly use this module, and |
| 712 | thus this can't be removed unless the other modules are |
| 713 | removed. */ |
| 714 | |
| 715 | if (handler == NULL) |
| 716 | return -EINVAL; |
| 717 | |
| 718 | /* Make sure the driver is actually initialized, this handles |
| 719 | problems with initialization order. */ |
| 720 | if (!initialized) { |
| 721 | rv = ipmi_init_msghandler(); |
| 722 | if (rv) |
| 723 | return rv; |
| 724 | |
| 725 | /* The init code doesn't return an error if it was turned |
| 726 | off, but it won't initialize. Check that. */ |
| 727 | if (!initialized) |
| 728 | return -ENODEV; |
| 729 | } |
| 730 | |
| 731 | new_user = kmalloc(sizeof(*new_user), GFP_KERNEL); |
| 732 | if (! new_user) |
| 733 | return -ENOMEM; |
| 734 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 735 | spin_lock_irqsave(&interfaces_lock, flags); |
| 736 | intf = ipmi_interfaces[if_num]; |
| 737 | if ((if_num >= MAX_IPMI_INTERFACES) || IPMI_INVALID_INTERFACE(intf)) { |
| 738 | spin_unlock_irqrestore(&interfaces_lock, flags); |
| 739 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 740 | } |
| 741 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 742 | /* Note that each existing user holds a refcount to the interface. */ |
| 743 | kref_get(&intf->refcount); |
| 744 | spin_unlock_irqrestore(&interfaces_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 745 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 746 | kref_init(&new_user->refcount); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 747 | new_user->handler = handler; |
| 748 | new_user->handler_data = handler_data; |
| 749 | new_user->intf = intf; |
| 750 | new_user->gets_events = 0; |
| 751 | |
| 752 | if (!try_module_get(intf->handlers->owner)) { |
| 753 | rv = -ENODEV; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 754 | goto out_err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 755 | } |
| 756 | |
| 757 | if (intf->handlers->inc_usecount) { |
| 758 | rv = intf->handlers->inc_usecount(intf->send_info); |
| 759 | if (rv) { |
| 760 | module_put(intf->handlers->owner); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 761 | goto out_err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 762 | } |
| 763 | } |
| 764 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 765 | new_user->valid = 1; |
| 766 | spin_lock_irqsave(&intf->seq_lock, flags); |
| 767 | list_add_rcu(&new_user->link, &intf->users); |
| 768 | spin_unlock_irqrestore(&intf->seq_lock, flags); |
| 769 | *user = new_user; |
| 770 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 771 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 772 | out_err: |
| 773 | kfree(new_user); |
| 774 | kref_put(&intf->refcount, intf_free); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 775 | return rv; |
| 776 | } |
| 777 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 778 | static void free_user(struct kref *ref) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 779 | { |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 780 | ipmi_user_t user = container_of(ref, struct ipmi_user, refcount); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 781 | kfree(user); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 782 | } |
| 783 | |
| 784 | int ipmi_destroy_user(ipmi_user_t user) |
| 785 | { |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 786 | int rv = -ENODEV; |
| 787 | ipmi_smi_t intf = user->intf; |
| 788 | int i; |
| 789 | unsigned long flags; |
| 790 | struct cmd_rcvr *rcvr; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 791 | struct cmd_rcvr *rcvrs = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 792 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 793 | user->valid = 1; |
| 794 | |
| 795 | /* Remove the user from the interface's sequence table. */ |
| 796 | spin_lock_irqsave(&intf->seq_lock, flags); |
| 797 | list_del_rcu(&user->link); |
| 798 | |
| 799 | for (i = 0; i < IPMI_IPMB_NUM_SEQ; i++) { |
| 800 | if (intf->seq_table[i].inuse |
| 801 | && (intf->seq_table[i].recv_msg->user == user)) |
| 802 | { |
| 803 | intf->seq_table[i].inuse = 0; |
| 804 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 805 | } |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 806 | spin_unlock_irqrestore(&intf->seq_lock, flags); |
| 807 | |
| 808 | /* |
| 809 | * Remove the user from the command receiver's table. First |
| 810 | * we build a list of everything (not using the standard link, |
| 811 | * since other things may be using it till we do |
| 812 | * synchronize_rcu()) then free everything in that list. |
| 813 | */ |
Corey Minyard | e61fb5b | 2005-11-07 01:00:05 -0800 | [diff] [blame] | 814 | down(&intf->cmd_rcvrs_lock); |
Paul E. McKenney | 066bb8d | 2006-01-06 00:19:53 -0800 | [diff] [blame] | 815 | list_for_each_entry_rcu(rcvr, &intf->cmd_rcvrs, link) { |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 816 | if (rcvr->user == user) { |
| 817 | list_del_rcu(&rcvr->link); |
| 818 | rcvr->next = rcvrs; |
| 819 | rcvrs = rcvr; |
| 820 | } |
| 821 | } |
Corey Minyard | e61fb5b | 2005-11-07 01:00:05 -0800 | [diff] [blame] | 822 | up(&intf->cmd_rcvrs_lock); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 823 | synchronize_rcu(); |
| 824 | while (rcvrs) { |
| 825 | rcvr = rcvrs; |
| 826 | rcvrs = rcvr->next; |
| 827 | kfree(rcvr); |
| 828 | } |
| 829 | |
| 830 | module_put(intf->handlers->owner); |
| 831 | if (intf->handlers->dec_usecount) |
| 832 | intf->handlers->dec_usecount(intf->send_info); |
| 833 | |
| 834 | kref_put(&intf->refcount, intf_free); |
| 835 | |
| 836 | kref_put(&user->refcount, free_user); |
| 837 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 838 | return rv; |
| 839 | } |
| 840 | |
| 841 | void ipmi_get_version(ipmi_user_t user, |
| 842 | unsigned char *major, |
| 843 | unsigned char *minor) |
| 844 | { |
| 845 | *major = user->intf->version_major; |
| 846 | *minor = user->intf->version_minor; |
| 847 | } |
| 848 | |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 849 | int ipmi_set_my_address(ipmi_user_t user, |
| 850 | unsigned int channel, |
| 851 | unsigned char address) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 852 | { |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 853 | if (channel >= IPMI_MAX_CHANNELS) |
| 854 | return -EINVAL; |
| 855 | user->intf->channels[channel].address = address; |
| 856 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 857 | } |
| 858 | |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 859 | int ipmi_get_my_address(ipmi_user_t user, |
| 860 | unsigned int channel, |
| 861 | unsigned char *address) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 862 | { |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 863 | if (channel >= IPMI_MAX_CHANNELS) |
| 864 | return -EINVAL; |
| 865 | *address = user->intf->channels[channel].address; |
| 866 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 867 | } |
| 868 | |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 869 | int ipmi_set_my_LUN(ipmi_user_t user, |
| 870 | unsigned int channel, |
| 871 | unsigned char LUN) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 872 | { |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 873 | if (channel >= IPMI_MAX_CHANNELS) |
| 874 | return -EINVAL; |
| 875 | user->intf->channels[channel].lun = LUN & 0x3; |
| 876 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 877 | } |
| 878 | |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 879 | int ipmi_get_my_LUN(ipmi_user_t user, |
| 880 | unsigned int channel, |
| 881 | unsigned char *address) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 882 | { |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 883 | if (channel >= IPMI_MAX_CHANNELS) |
| 884 | return -EINVAL; |
| 885 | *address = user->intf->channels[channel].lun; |
| 886 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 887 | } |
| 888 | |
| 889 | int ipmi_set_gets_events(ipmi_user_t user, int val) |
| 890 | { |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 891 | unsigned long flags; |
| 892 | ipmi_smi_t intf = user->intf; |
| 893 | struct ipmi_recv_msg *msg, *msg2; |
| 894 | struct list_head msgs; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 895 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 896 | INIT_LIST_HEAD(&msgs); |
| 897 | |
| 898 | spin_lock_irqsave(&intf->events_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 899 | user->gets_events = val; |
| 900 | |
| 901 | if (val) { |
| 902 | /* Deliver any queued events. */ |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 903 | list_for_each_entry_safe(msg, msg2, &intf->waiting_events, link) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 904 | list_del(&msg->link); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 905 | list_add_tail(&msg->link, &msgs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 906 | } |
| 907 | } |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 908 | |
| 909 | /* Hold the events lock while doing this to preserve order. */ |
| 910 | list_for_each_entry_safe(msg, msg2, &msgs, link) { |
| 911 | msg->user = user; |
| 912 | kref_get(&user->refcount); |
| 913 | deliver_response(msg); |
| 914 | } |
| 915 | |
| 916 | spin_unlock_irqrestore(&intf->events_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 917 | |
| 918 | return 0; |
| 919 | } |
| 920 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 921 | static struct cmd_rcvr *find_cmd_rcvr(ipmi_smi_t intf, |
| 922 | unsigned char netfn, |
| 923 | unsigned char cmd) |
| 924 | { |
| 925 | struct cmd_rcvr *rcvr; |
| 926 | |
| 927 | list_for_each_entry_rcu(rcvr, &intf->cmd_rcvrs, link) { |
| 928 | if ((rcvr->netfn == netfn) && (rcvr->cmd == cmd)) |
| 929 | return rcvr; |
| 930 | } |
| 931 | return NULL; |
| 932 | } |
| 933 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 934 | int ipmi_register_for_cmd(ipmi_user_t user, |
| 935 | unsigned char netfn, |
| 936 | unsigned char cmd) |
| 937 | { |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 938 | ipmi_smi_t intf = user->intf; |
| 939 | struct cmd_rcvr *rcvr; |
| 940 | struct cmd_rcvr *entry; |
| 941 | int rv = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 942 | |
| 943 | |
| 944 | rcvr = kmalloc(sizeof(*rcvr), GFP_KERNEL); |
| 945 | if (! rcvr) |
| 946 | return -ENOMEM; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 947 | rcvr->cmd = cmd; |
| 948 | rcvr->netfn = netfn; |
| 949 | rcvr->user = user; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 950 | |
Corey Minyard | e61fb5b | 2005-11-07 01:00:05 -0800 | [diff] [blame] | 951 | down(&intf->cmd_rcvrs_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 952 | /* Make sure the command/netfn is not already registered. */ |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 953 | entry = find_cmd_rcvr(intf, netfn, cmd); |
| 954 | if (entry) { |
| 955 | rv = -EBUSY; |
| 956 | goto out_unlock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 957 | } |
| 958 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 959 | list_add_rcu(&rcvr->link, &intf->cmd_rcvrs); |
Corey Minyard | 877197e | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 960 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 961 | out_unlock: |
Corey Minyard | e61fb5b | 2005-11-07 01:00:05 -0800 | [diff] [blame] | 962 | up(&intf->cmd_rcvrs_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 963 | if (rv) |
| 964 | kfree(rcvr); |
| 965 | |
| 966 | return rv; |
| 967 | } |
| 968 | |
| 969 | int ipmi_unregister_for_cmd(ipmi_user_t user, |
| 970 | unsigned char netfn, |
| 971 | unsigned char cmd) |
| 972 | { |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 973 | ipmi_smi_t intf = user->intf; |
| 974 | struct cmd_rcvr *rcvr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 975 | |
Corey Minyard | e61fb5b | 2005-11-07 01:00:05 -0800 | [diff] [blame] | 976 | down(&intf->cmd_rcvrs_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 977 | /* Make sure the command/netfn is not already registered. */ |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 978 | rcvr = find_cmd_rcvr(intf, netfn, cmd); |
| 979 | if ((rcvr) && (rcvr->user == user)) { |
| 980 | list_del_rcu(&rcvr->link); |
Corey Minyard | e61fb5b | 2005-11-07 01:00:05 -0800 | [diff] [blame] | 981 | up(&intf->cmd_rcvrs_lock); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 982 | synchronize_rcu(); |
| 983 | kfree(rcvr); |
| 984 | return 0; |
| 985 | } else { |
Corey Minyard | e61fb5b | 2005-11-07 01:00:05 -0800 | [diff] [blame] | 986 | up(&intf->cmd_rcvrs_lock); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 987 | return -ENOENT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 988 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 989 | } |
| 990 | |
| 991 | void ipmi_user_set_run_to_completion(ipmi_user_t user, int val) |
| 992 | { |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 993 | ipmi_smi_t intf = user->intf; |
| 994 | intf->handlers->set_run_to_completion(intf->send_info, val); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 995 | } |
| 996 | |
| 997 | static unsigned char |
| 998 | ipmb_checksum(unsigned char *data, int size) |
| 999 | { |
| 1000 | unsigned char csum = 0; |
| 1001 | |
| 1002 | for (; size > 0; size--, data++) |
| 1003 | csum += *data; |
| 1004 | |
| 1005 | return -csum; |
| 1006 | } |
| 1007 | |
| 1008 | static inline void format_ipmb_msg(struct ipmi_smi_msg *smi_msg, |
| 1009 | struct kernel_ipmi_msg *msg, |
| 1010 | struct ipmi_ipmb_addr *ipmb_addr, |
| 1011 | long msgid, |
| 1012 | unsigned char ipmb_seq, |
| 1013 | int broadcast, |
| 1014 | unsigned char source_address, |
| 1015 | unsigned char source_lun) |
| 1016 | { |
| 1017 | int i = broadcast; |
| 1018 | |
| 1019 | /* Format the IPMB header data. */ |
| 1020 | smi_msg->data[0] = (IPMI_NETFN_APP_REQUEST << 2); |
| 1021 | smi_msg->data[1] = IPMI_SEND_MSG_CMD; |
| 1022 | smi_msg->data[2] = ipmb_addr->channel; |
| 1023 | if (broadcast) |
| 1024 | smi_msg->data[3] = 0; |
| 1025 | smi_msg->data[i+3] = ipmb_addr->slave_addr; |
| 1026 | smi_msg->data[i+4] = (msg->netfn << 2) | (ipmb_addr->lun & 0x3); |
| 1027 | smi_msg->data[i+5] = ipmb_checksum(&(smi_msg->data[i+3]), 2); |
| 1028 | smi_msg->data[i+6] = source_address; |
| 1029 | smi_msg->data[i+7] = (ipmb_seq << 2) | source_lun; |
| 1030 | smi_msg->data[i+8] = msg->cmd; |
| 1031 | |
| 1032 | /* Now tack on the data to the message. */ |
| 1033 | if (msg->data_len > 0) |
| 1034 | memcpy(&(smi_msg->data[i+9]), msg->data, |
| 1035 | msg->data_len); |
| 1036 | smi_msg->data_size = msg->data_len + 9; |
| 1037 | |
| 1038 | /* Now calculate the checksum and tack it on. */ |
| 1039 | smi_msg->data[i+smi_msg->data_size] |
| 1040 | = ipmb_checksum(&(smi_msg->data[i+6]), |
| 1041 | smi_msg->data_size-6); |
| 1042 | |
| 1043 | /* Add on the checksum size and the offset from the |
| 1044 | broadcast. */ |
| 1045 | smi_msg->data_size += 1 + i; |
| 1046 | |
| 1047 | smi_msg->msgid = msgid; |
| 1048 | } |
| 1049 | |
| 1050 | static inline void format_lan_msg(struct ipmi_smi_msg *smi_msg, |
| 1051 | struct kernel_ipmi_msg *msg, |
| 1052 | struct ipmi_lan_addr *lan_addr, |
| 1053 | long msgid, |
| 1054 | unsigned char ipmb_seq, |
| 1055 | unsigned char source_lun) |
| 1056 | { |
| 1057 | /* Format the IPMB header data. */ |
| 1058 | smi_msg->data[0] = (IPMI_NETFN_APP_REQUEST << 2); |
| 1059 | smi_msg->data[1] = IPMI_SEND_MSG_CMD; |
| 1060 | smi_msg->data[2] = lan_addr->channel; |
| 1061 | smi_msg->data[3] = lan_addr->session_handle; |
| 1062 | smi_msg->data[4] = lan_addr->remote_SWID; |
| 1063 | smi_msg->data[5] = (msg->netfn << 2) | (lan_addr->lun & 0x3); |
| 1064 | smi_msg->data[6] = ipmb_checksum(&(smi_msg->data[4]), 2); |
| 1065 | smi_msg->data[7] = lan_addr->local_SWID; |
| 1066 | smi_msg->data[8] = (ipmb_seq << 2) | source_lun; |
| 1067 | smi_msg->data[9] = msg->cmd; |
| 1068 | |
| 1069 | /* Now tack on the data to the message. */ |
| 1070 | if (msg->data_len > 0) |
| 1071 | memcpy(&(smi_msg->data[10]), msg->data, |
| 1072 | msg->data_len); |
| 1073 | smi_msg->data_size = msg->data_len + 10; |
| 1074 | |
| 1075 | /* Now calculate the checksum and tack it on. */ |
| 1076 | smi_msg->data[smi_msg->data_size] |
| 1077 | = ipmb_checksum(&(smi_msg->data[7]), |
| 1078 | smi_msg->data_size-7); |
| 1079 | |
| 1080 | /* Add on the checksum size and the offset from the |
| 1081 | broadcast. */ |
| 1082 | smi_msg->data_size += 1; |
| 1083 | |
| 1084 | smi_msg->msgid = msgid; |
| 1085 | } |
| 1086 | |
| 1087 | /* Separate from ipmi_request so that the user does not have to be |
| 1088 | supplied in certain circumstances (mainly at panic time). If |
| 1089 | messages are supplied, they will be freed, even if an error |
| 1090 | occurs. */ |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 1091 | static int i_ipmi_request(ipmi_user_t user, |
| 1092 | ipmi_smi_t intf, |
| 1093 | struct ipmi_addr *addr, |
| 1094 | long msgid, |
| 1095 | struct kernel_ipmi_msg *msg, |
| 1096 | void *user_msg_data, |
| 1097 | void *supplied_smi, |
| 1098 | struct ipmi_recv_msg *supplied_recv, |
| 1099 | int priority, |
| 1100 | unsigned char source_address, |
| 1101 | unsigned char source_lun, |
| 1102 | int retries, |
| 1103 | unsigned int retry_time_ms) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1104 | { |
| 1105 | int rv = 0; |
| 1106 | struct ipmi_smi_msg *smi_msg; |
| 1107 | struct ipmi_recv_msg *recv_msg; |
| 1108 | unsigned long flags; |
| 1109 | |
| 1110 | |
| 1111 | if (supplied_recv) { |
| 1112 | recv_msg = supplied_recv; |
| 1113 | } else { |
| 1114 | recv_msg = ipmi_alloc_recv_msg(); |
| 1115 | if (recv_msg == NULL) { |
| 1116 | return -ENOMEM; |
| 1117 | } |
| 1118 | } |
| 1119 | recv_msg->user_msg_data = user_msg_data; |
| 1120 | |
| 1121 | if (supplied_smi) { |
| 1122 | smi_msg = (struct ipmi_smi_msg *) supplied_smi; |
| 1123 | } else { |
| 1124 | smi_msg = ipmi_alloc_smi_msg(); |
| 1125 | if (smi_msg == NULL) { |
| 1126 | ipmi_free_recv_msg(recv_msg); |
| 1127 | return -ENOMEM; |
| 1128 | } |
| 1129 | } |
| 1130 | |
| 1131 | recv_msg->user = user; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 1132 | if (user) |
| 1133 | kref_get(&user->refcount); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1134 | recv_msg->msgid = msgid; |
| 1135 | /* Store the message to send in the receive message so timeout |
| 1136 | responses can get the proper response data. */ |
| 1137 | recv_msg->msg = *msg; |
| 1138 | |
| 1139 | if (addr->addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) { |
| 1140 | struct ipmi_system_interface_addr *smi_addr; |
| 1141 | |
| 1142 | if (msg->netfn & 1) { |
| 1143 | /* Responses are not allowed to the SMI. */ |
| 1144 | rv = -EINVAL; |
| 1145 | goto out_err; |
| 1146 | } |
| 1147 | |
| 1148 | smi_addr = (struct ipmi_system_interface_addr *) addr; |
| 1149 | if (smi_addr->lun > 3) { |
| 1150 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 1151 | intf->sent_invalid_commands++; |
| 1152 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 1153 | rv = -EINVAL; |
| 1154 | goto out_err; |
| 1155 | } |
| 1156 | |
| 1157 | memcpy(&recv_msg->addr, smi_addr, sizeof(*smi_addr)); |
| 1158 | |
| 1159 | if ((msg->netfn == IPMI_NETFN_APP_REQUEST) |
| 1160 | && ((msg->cmd == IPMI_SEND_MSG_CMD) |
| 1161 | || (msg->cmd == IPMI_GET_MSG_CMD) |
| 1162 | || (msg->cmd == IPMI_READ_EVENT_MSG_BUFFER_CMD))) |
| 1163 | { |
| 1164 | /* We don't let the user do these, since we manage |
| 1165 | the sequence numbers. */ |
| 1166 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 1167 | intf->sent_invalid_commands++; |
| 1168 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 1169 | rv = -EINVAL; |
| 1170 | goto out_err; |
| 1171 | } |
| 1172 | |
| 1173 | if ((msg->data_len + 2) > IPMI_MAX_MSG_LENGTH) { |
| 1174 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 1175 | intf->sent_invalid_commands++; |
| 1176 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 1177 | rv = -EMSGSIZE; |
| 1178 | goto out_err; |
| 1179 | } |
| 1180 | |
| 1181 | smi_msg->data[0] = (msg->netfn << 2) | (smi_addr->lun & 0x3); |
| 1182 | smi_msg->data[1] = msg->cmd; |
| 1183 | smi_msg->msgid = msgid; |
| 1184 | smi_msg->user_data = recv_msg; |
| 1185 | if (msg->data_len > 0) |
| 1186 | memcpy(&(smi_msg->data[2]), msg->data, msg->data_len); |
| 1187 | smi_msg->data_size = msg->data_len + 2; |
| 1188 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 1189 | intf->sent_local_commands++; |
| 1190 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 1191 | } else if ((addr->addr_type == IPMI_IPMB_ADDR_TYPE) |
| 1192 | || (addr->addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE)) |
| 1193 | { |
| 1194 | struct ipmi_ipmb_addr *ipmb_addr; |
| 1195 | unsigned char ipmb_seq; |
| 1196 | long seqid; |
| 1197 | int broadcast = 0; |
| 1198 | |
KAMBAROV, ZAUR | 9c101fd | 2005-06-28 20:45:08 -0700 | [diff] [blame] | 1199 | if (addr->channel >= IPMI_MAX_CHANNELS) { |
| 1200 | spin_lock_irqsave(&intf->counter_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1201 | intf->sent_invalid_commands++; |
| 1202 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 1203 | rv = -EINVAL; |
| 1204 | goto out_err; |
| 1205 | } |
| 1206 | |
| 1207 | if (intf->channels[addr->channel].medium |
| 1208 | != IPMI_CHANNEL_MEDIUM_IPMB) |
| 1209 | { |
| 1210 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 1211 | intf->sent_invalid_commands++; |
| 1212 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 1213 | rv = -EINVAL; |
| 1214 | goto out_err; |
| 1215 | } |
| 1216 | |
| 1217 | if (retries < 0) { |
| 1218 | if (addr->addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE) |
| 1219 | retries = 0; /* Don't retry broadcasts. */ |
| 1220 | else |
| 1221 | retries = 4; |
| 1222 | } |
| 1223 | if (addr->addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE) { |
| 1224 | /* Broadcasts add a zero at the beginning of the |
| 1225 | message, but otherwise is the same as an IPMB |
| 1226 | address. */ |
| 1227 | addr->addr_type = IPMI_IPMB_ADDR_TYPE; |
| 1228 | broadcast = 1; |
| 1229 | } |
| 1230 | |
| 1231 | |
| 1232 | /* Default to 1 second retries. */ |
| 1233 | if (retry_time_ms == 0) |
| 1234 | retry_time_ms = 1000; |
| 1235 | |
| 1236 | /* 9 for the header and 1 for the checksum, plus |
| 1237 | possibly one for the broadcast. */ |
| 1238 | if ((msg->data_len + 10 + broadcast) > IPMI_MAX_MSG_LENGTH) { |
| 1239 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 1240 | intf->sent_invalid_commands++; |
| 1241 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 1242 | rv = -EMSGSIZE; |
| 1243 | goto out_err; |
| 1244 | } |
| 1245 | |
| 1246 | ipmb_addr = (struct ipmi_ipmb_addr *) addr; |
| 1247 | if (ipmb_addr->lun > 3) { |
| 1248 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 1249 | intf->sent_invalid_commands++; |
| 1250 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 1251 | rv = -EINVAL; |
| 1252 | goto out_err; |
| 1253 | } |
| 1254 | |
| 1255 | memcpy(&recv_msg->addr, ipmb_addr, sizeof(*ipmb_addr)); |
| 1256 | |
| 1257 | if (recv_msg->msg.netfn & 0x1) { |
| 1258 | /* It's a response, so use the user's sequence |
| 1259 | from msgid. */ |
| 1260 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 1261 | intf->sent_ipmb_responses++; |
| 1262 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 1263 | format_ipmb_msg(smi_msg, msg, ipmb_addr, msgid, |
| 1264 | msgid, broadcast, |
| 1265 | source_address, source_lun); |
| 1266 | |
| 1267 | /* Save the receive message so we can use it |
| 1268 | to deliver the response. */ |
| 1269 | smi_msg->user_data = recv_msg; |
| 1270 | } else { |
| 1271 | /* It's a command, so get a sequence for it. */ |
| 1272 | |
| 1273 | spin_lock_irqsave(&(intf->seq_lock), flags); |
| 1274 | |
| 1275 | spin_lock(&intf->counter_lock); |
| 1276 | intf->sent_ipmb_commands++; |
| 1277 | spin_unlock(&intf->counter_lock); |
| 1278 | |
| 1279 | /* Create a sequence number with a 1 second |
| 1280 | timeout and 4 retries. */ |
| 1281 | rv = intf_next_seq(intf, |
| 1282 | recv_msg, |
| 1283 | retry_time_ms, |
| 1284 | retries, |
| 1285 | broadcast, |
| 1286 | &ipmb_seq, |
| 1287 | &seqid); |
| 1288 | if (rv) { |
| 1289 | /* We have used up all the sequence numbers, |
| 1290 | probably, so abort. */ |
| 1291 | spin_unlock_irqrestore(&(intf->seq_lock), |
| 1292 | flags); |
| 1293 | goto out_err; |
| 1294 | } |
| 1295 | |
| 1296 | /* Store the sequence number in the message, |
| 1297 | so that when the send message response |
| 1298 | comes back we can start the timer. */ |
| 1299 | format_ipmb_msg(smi_msg, msg, ipmb_addr, |
| 1300 | STORE_SEQ_IN_MSGID(ipmb_seq, seqid), |
| 1301 | ipmb_seq, broadcast, |
| 1302 | source_address, source_lun); |
| 1303 | |
| 1304 | /* Copy the message into the recv message data, so we |
| 1305 | can retransmit it later if necessary. */ |
| 1306 | memcpy(recv_msg->msg_data, smi_msg->data, |
| 1307 | smi_msg->data_size); |
| 1308 | recv_msg->msg.data = recv_msg->msg_data; |
| 1309 | recv_msg->msg.data_len = smi_msg->data_size; |
| 1310 | |
| 1311 | /* We don't unlock until here, because we need |
| 1312 | to copy the completed message into the |
| 1313 | recv_msg before we release the lock. |
| 1314 | Otherwise, race conditions may bite us. I |
| 1315 | know that's pretty paranoid, but I prefer |
| 1316 | to be correct. */ |
| 1317 | spin_unlock_irqrestore(&(intf->seq_lock), flags); |
| 1318 | } |
| 1319 | } else if (addr->addr_type == IPMI_LAN_ADDR_TYPE) { |
| 1320 | struct ipmi_lan_addr *lan_addr; |
| 1321 | unsigned char ipmb_seq; |
| 1322 | long seqid; |
| 1323 | |
Jayachandran C | 12fc1d7 | 2006-02-03 03:04:51 -0800 | [diff] [blame^] | 1324 | if (addr->channel >= IPMI_MAX_CHANNELS) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1325 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 1326 | intf->sent_invalid_commands++; |
| 1327 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 1328 | rv = -EINVAL; |
| 1329 | goto out_err; |
| 1330 | } |
| 1331 | |
| 1332 | if ((intf->channels[addr->channel].medium |
| 1333 | != IPMI_CHANNEL_MEDIUM_8023LAN) |
| 1334 | && (intf->channels[addr->channel].medium |
| 1335 | != IPMI_CHANNEL_MEDIUM_ASYNC)) |
| 1336 | { |
| 1337 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 1338 | intf->sent_invalid_commands++; |
| 1339 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 1340 | rv = -EINVAL; |
| 1341 | goto out_err; |
| 1342 | } |
| 1343 | |
| 1344 | retries = 4; |
| 1345 | |
| 1346 | /* Default to 1 second retries. */ |
| 1347 | if (retry_time_ms == 0) |
| 1348 | retry_time_ms = 1000; |
| 1349 | |
| 1350 | /* 11 for the header and 1 for the checksum. */ |
| 1351 | if ((msg->data_len + 12) > IPMI_MAX_MSG_LENGTH) { |
| 1352 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 1353 | intf->sent_invalid_commands++; |
| 1354 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 1355 | rv = -EMSGSIZE; |
| 1356 | goto out_err; |
| 1357 | } |
| 1358 | |
| 1359 | lan_addr = (struct ipmi_lan_addr *) addr; |
| 1360 | if (lan_addr->lun > 3) { |
| 1361 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 1362 | intf->sent_invalid_commands++; |
| 1363 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 1364 | rv = -EINVAL; |
| 1365 | goto out_err; |
| 1366 | } |
| 1367 | |
| 1368 | memcpy(&recv_msg->addr, lan_addr, sizeof(*lan_addr)); |
| 1369 | |
| 1370 | if (recv_msg->msg.netfn & 0x1) { |
| 1371 | /* It's a response, so use the user's sequence |
| 1372 | from msgid. */ |
| 1373 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 1374 | intf->sent_lan_responses++; |
| 1375 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 1376 | format_lan_msg(smi_msg, msg, lan_addr, msgid, |
| 1377 | msgid, source_lun); |
| 1378 | |
| 1379 | /* Save the receive message so we can use it |
| 1380 | to deliver the response. */ |
| 1381 | smi_msg->user_data = recv_msg; |
| 1382 | } else { |
| 1383 | /* It's a command, so get a sequence for it. */ |
| 1384 | |
| 1385 | spin_lock_irqsave(&(intf->seq_lock), flags); |
| 1386 | |
| 1387 | spin_lock(&intf->counter_lock); |
| 1388 | intf->sent_lan_commands++; |
| 1389 | spin_unlock(&intf->counter_lock); |
| 1390 | |
| 1391 | /* Create a sequence number with a 1 second |
| 1392 | timeout and 4 retries. */ |
| 1393 | rv = intf_next_seq(intf, |
| 1394 | recv_msg, |
| 1395 | retry_time_ms, |
| 1396 | retries, |
| 1397 | 0, |
| 1398 | &ipmb_seq, |
| 1399 | &seqid); |
| 1400 | if (rv) { |
| 1401 | /* We have used up all the sequence numbers, |
| 1402 | probably, so abort. */ |
| 1403 | spin_unlock_irqrestore(&(intf->seq_lock), |
| 1404 | flags); |
| 1405 | goto out_err; |
| 1406 | } |
| 1407 | |
| 1408 | /* Store the sequence number in the message, |
| 1409 | so that when the send message response |
| 1410 | comes back we can start the timer. */ |
| 1411 | format_lan_msg(smi_msg, msg, lan_addr, |
| 1412 | STORE_SEQ_IN_MSGID(ipmb_seq, seqid), |
| 1413 | ipmb_seq, source_lun); |
| 1414 | |
| 1415 | /* Copy the message into the recv message data, so we |
| 1416 | can retransmit it later if necessary. */ |
| 1417 | memcpy(recv_msg->msg_data, smi_msg->data, |
| 1418 | smi_msg->data_size); |
| 1419 | recv_msg->msg.data = recv_msg->msg_data; |
| 1420 | recv_msg->msg.data_len = smi_msg->data_size; |
| 1421 | |
| 1422 | /* We don't unlock until here, because we need |
| 1423 | to copy the completed message into the |
| 1424 | recv_msg before we release the lock. |
| 1425 | Otherwise, race conditions may bite us. I |
| 1426 | know that's pretty paranoid, but I prefer |
| 1427 | to be correct. */ |
| 1428 | spin_unlock_irqrestore(&(intf->seq_lock), flags); |
| 1429 | } |
| 1430 | } else { |
| 1431 | /* Unknown address type. */ |
| 1432 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 1433 | intf->sent_invalid_commands++; |
| 1434 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 1435 | rv = -EINVAL; |
| 1436 | goto out_err; |
| 1437 | } |
| 1438 | |
| 1439 | #ifdef DEBUG_MSGING |
| 1440 | { |
| 1441 | int m; |
Corey Minyard | e8b3361 | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 1442 | for (m = 0; m < smi_msg->data_size; m++) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1443 | printk(" %2.2x", smi_msg->data[m]); |
| 1444 | printk("\n"); |
| 1445 | } |
| 1446 | #endif |
| 1447 | intf->handlers->sender(intf->send_info, smi_msg, priority); |
| 1448 | |
| 1449 | return 0; |
| 1450 | |
| 1451 | out_err: |
| 1452 | ipmi_free_smi_msg(smi_msg); |
| 1453 | ipmi_free_recv_msg(recv_msg); |
| 1454 | return rv; |
| 1455 | } |
| 1456 | |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 1457 | static int check_addr(ipmi_smi_t intf, |
| 1458 | struct ipmi_addr *addr, |
| 1459 | unsigned char *saddr, |
| 1460 | unsigned char *lun) |
| 1461 | { |
| 1462 | if (addr->channel >= IPMI_MAX_CHANNELS) |
| 1463 | return -EINVAL; |
| 1464 | *lun = intf->channels[addr->channel].lun; |
| 1465 | *saddr = intf->channels[addr->channel].address; |
| 1466 | return 0; |
| 1467 | } |
| 1468 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1469 | int ipmi_request_settime(ipmi_user_t user, |
| 1470 | struct ipmi_addr *addr, |
| 1471 | long msgid, |
| 1472 | struct kernel_ipmi_msg *msg, |
| 1473 | void *user_msg_data, |
| 1474 | int priority, |
| 1475 | int retries, |
| 1476 | unsigned int retry_time_ms) |
| 1477 | { |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 1478 | unsigned char saddr, lun; |
| 1479 | int rv; |
| 1480 | |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 1481 | if (! user) |
| 1482 | return -EINVAL; |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 1483 | rv = check_addr(user->intf, addr, &saddr, &lun); |
| 1484 | if (rv) |
| 1485 | return rv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1486 | return i_ipmi_request(user, |
| 1487 | user->intf, |
| 1488 | addr, |
| 1489 | msgid, |
| 1490 | msg, |
| 1491 | user_msg_data, |
| 1492 | NULL, NULL, |
| 1493 | priority, |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 1494 | saddr, |
| 1495 | lun, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1496 | retries, |
| 1497 | retry_time_ms); |
| 1498 | } |
| 1499 | |
| 1500 | int ipmi_request_supply_msgs(ipmi_user_t user, |
| 1501 | struct ipmi_addr *addr, |
| 1502 | long msgid, |
| 1503 | struct kernel_ipmi_msg *msg, |
| 1504 | void *user_msg_data, |
| 1505 | void *supplied_smi, |
| 1506 | struct ipmi_recv_msg *supplied_recv, |
| 1507 | int priority) |
| 1508 | { |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 1509 | unsigned char saddr, lun; |
| 1510 | int rv; |
| 1511 | |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 1512 | if (! user) |
| 1513 | return -EINVAL; |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 1514 | rv = check_addr(user->intf, addr, &saddr, &lun); |
| 1515 | if (rv) |
| 1516 | return rv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1517 | return i_ipmi_request(user, |
| 1518 | user->intf, |
| 1519 | addr, |
| 1520 | msgid, |
| 1521 | msg, |
| 1522 | user_msg_data, |
| 1523 | supplied_smi, |
| 1524 | supplied_recv, |
| 1525 | priority, |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 1526 | saddr, |
| 1527 | lun, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1528 | -1, 0); |
| 1529 | } |
| 1530 | |
| 1531 | static int ipmb_file_read_proc(char *page, char **start, off_t off, |
| 1532 | int count, int *eof, void *data) |
| 1533 | { |
| 1534 | char *out = (char *) page; |
| 1535 | ipmi_smi_t intf = data; |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 1536 | int i; |
| 1537 | int rv= 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1538 | |
Corey Minyard | e8b3361 | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 1539 | for (i = 0; i < IPMI_MAX_CHANNELS; i++) |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 1540 | rv += sprintf(out+rv, "%x ", intf->channels[i].address); |
| 1541 | out[rv-1] = '\n'; /* Replace the final space with a newline */ |
| 1542 | out[rv] = '\0'; |
| 1543 | rv++; |
| 1544 | return rv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1545 | } |
| 1546 | |
| 1547 | static int version_file_read_proc(char *page, char **start, off_t off, |
| 1548 | int count, int *eof, void *data) |
| 1549 | { |
| 1550 | char *out = (char *) page; |
| 1551 | ipmi_smi_t intf = data; |
| 1552 | |
| 1553 | return sprintf(out, "%d.%d\n", |
| 1554 | intf->version_major, intf->version_minor); |
| 1555 | } |
| 1556 | |
| 1557 | static int stat_file_read_proc(char *page, char **start, off_t off, |
| 1558 | int count, int *eof, void *data) |
| 1559 | { |
| 1560 | char *out = (char *) page; |
| 1561 | ipmi_smi_t intf = data; |
| 1562 | |
| 1563 | out += sprintf(out, "sent_invalid_commands: %d\n", |
| 1564 | intf->sent_invalid_commands); |
| 1565 | out += sprintf(out, "sent_local_commands: %d\n", |
| 1566 | intf->sent_local_commands); |
| 1567 | out += sprintf(out, "handled_local_responses: %d\n", |
| 1568 | intf->handled_local_responses); |
| 1569 | out += sprintf(out, "unhandled_local_responses: %d\n", |
| 1570 | intf->unhandled_local_responses); |
| 1571 | out += sprintf(out, "sent_ipmb_commands: %d\n", |
| 1572 | intf->sent_ipmb_commands); |
| 1573 | out += sprintf(out, "sent_ipmb_command_errs: %d\n", |
| 1574 | intf->sent_ipmb_command_errs); |
| 1575 | out += sprintf(out, "retransmitted_ipmb_commands: %d\n", |
| 1576 | intf->retransmitted_ipmb_commands); |
| 1577 | out += sprintf(out, "timed_out_ipmb_commands: %d\n", |
| 1578 | intf->timed_out_ipmb_commands); |
| 1579 | out += sprintf(out, "timed_out_ipmb_broadcasts: %d\n", |
| 1580 | intf->timed_out_ipmb_broadcasts); |
| 1581 | out += sprintf(out, "sent_ipmb_responses: %d\n", |
| 1582 | intf->sent_ipmb_responses); |
| 1583 | out += sprintf(out, "handled_ipmb_responses: %d\n", |
| 1584 | intf->handled_ipmb_responses); |
| 1585 | out += sprintf(out, "invalid_ipmb_responses: %d\n", |
| 1586 | intf->invalid_ipmb_responses); |
| 1587 | out += sprintf(out, "unhandled_ipmb_responses: %d\n", |
| 1588 | intf->unhandled_ipmb_responses); |
| 1589 | out += sprintf(out, "sent_lan_commands: %d\n", |
| 1590 | intf->sent_lan_commands); |
| 1591 | out += sprintf(out, "sent_lan_command_errs: %d\n", |
| 1592 | intf->sent_lan_command_errs); |
| 1593 | out += sprintf(out, "retransmitted_lan_commands: %d\n", |
| 1594 | intf->retransmitted_lan_commands); |
| 1595 | out += sprintf(out, "timed_out_lan_commands: %d\n", |
| 1596 | intf->timed_out_lan_commands); |
| 1597 | out += sprintf(out, "sent_lan_responses: %d\n", |
| 1598 | intf->sent_lan_responses); |
| 1599 | out += sprintf(out, "handled_lan_responses: %d\n", |
| 1600 | intf->handled_lan_responses); |
| 1601 | out += sprintf(out, "invalid_lan_responses: %d\n", |
| 1602 | intf->invalid_lan_responses); |
| 1603 | out += sprintf(out, "unhandled_lan_responses: %d\n", |
| 1604 | intf->unhandled_lan_responses); |
| 1605 | out += sprintf(out, "handled_commands: %d\n", |
| 1606 | intf->handled_commands); |
| 1607 | out += sprintf(out, "invalid_commands: %d\n", |
| 1608 | intf->invalid_commands); |
| 1609 | out += sprintf(out, "unhandled_commands: %d\n", |
| 1610 | intf->unhandled_commands); |
| 1611 | out += sprintf(out, "invalid_events: %d\n", |
| 1612 | intf->invalid_events); |
| 1613 | out += sprintf(out, "events: %d\n", |
| 1614 | intf->events); |
| 1615 | |
| 1616 | return (out - ((char *) page)); |
| 1617 | } |
| 1618 | |
| 1619 | int ipmi_smi_add_proc_entry(ipmi_smi_t smi, char *name, |
| 1620 | read_proc_t *read_proc, write_proc_t *write_proc, |
| 1621 | void *data, struct module *owner) |
| 1622 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1623 | int rv = 0; |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 1624 | #ifdef CONFIG_PROC_FS |
| 1625 | struct proc_dir_entry *file; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1626 | struct ipmi_proc_entry *entry; |
| 1627 | |
| 1628 | /* Create a list element. */ |
| 1629 | entry = kmalloc(sizeof(*entry), GFP_KERNEL); |
| 1630 | if (!entry) |
| 1631 | return -ENOMEM; |
| 1632 | entry->name = kmalloc(strlen(name)+1, GFP_KERNEL); |
| 1633 | if (!entry->name) { |
| 1634 | kfree(entry); |
| 1635 | return -ENOMEM; |
| 1636 | } |
| 1637 | strcpy(entry->name, name); |
| 1638 | |
| 1639 | file = create_proc_entry(name, 0, smi->proc_dir); |
| 1640 | if (!file) { |
| 1641 | kfree(entry->name); |
| 1642 | kfree(entry); |
| 1643 | rv = -ENOMEM; |
| 1644 | } else { |
| 1645 | file->nlink = 1; |
| 1646 | file->data = data; |
| 1647 | file->read_proc = read_proc; |
| 1648 | file->write_proc = write_proc; |
| 1649 | file->owner = owner; |
| 1650 | |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 1651 | spin_lock(&smi->proc_entry_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1652 | /* Stick it on the list. */ |
| 1653 | entry->next = smi->proc_entries; |
| 1654 | smi->proc_entries = entry; |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 1655 | spin_unlock(&smi->proc_entry_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1656 | } |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 1657 | #endif /* CONFIG_PROC_FS */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1658 | |
| 1659 | return rv; |
| 1660 | } |
| 1661 | |
| 1662 | static int add_proc_entries(ipmi_smi_t smi, int num) |
| 1663 | { |
| 1664 | int rv = 0; |
| 1665 | |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 1666 | #ifdef CONFIG_PROC_FS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1667 | sprintf(smi->proc_dir_name, "%d", num); |
| 1668 | smi->proc_dir = proc_mkdir(smi->proc_dir_name, proc_ipmi_root); |
| 1669 | if (!smi->proc_dir) |
| 1670 | rv = -ENOMEM; |
| 1671 | else { |
| 1672 | smi->proc_dir->owner = THIS_MODULE; |
| 1673 | } |
| 1674 | |
| 1675 | if (rv == 0) |
| 1676 | rv = ipmi_smi_add_proc_entry(smi, "stats", |
| 1677 | stat_file_read_proc, NULL, |
| 1678 | smi, THIS_MODULE); |
| 1679 | |
| 1680 | if (rv == 0) |
| 1681 | rv = ipmi_smi_add_proc_entry(smi, "ipmb", |
| 1682 | ipmb_file_read_proc, NULL, |
| 1683 | smi, THIS_MODULE); |
| 1684 | |
| 1685 | if (rv == 0) |
| 1686 | rv = ipmi_smi_add_proc_entry(smi, "version", |
| 1687 | version_file_read_proc, NULL, |
| 1688 | smi, THIS_MODULE); |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 1689 | #endif /* CONFIG_PROC_FS */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1690 | |
| 1691 | return rv; |
| 1692 | } |
| 1693 | |
| 1694 | static void remove_proc_entries(ipmi_smi_t smi) |
| 1695 | { |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 1696 | #ifdef CONFIG_PROC_FS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1697 | struct ipmi_proc_entry *entry; |
| 1698 | |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 1699 | spin_lock(&smi->proc_entry_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1700 | while (smi->proc_entries) { |
| 1701 | entry = smi->proc_entries; |
| 1702 | smi->proc_entries = entry->next; |
| 1703 | |
| 1704 | remove_proc_entry(entry->name, smi->proc_dir); |
| 1705 | kfree(entry->name); |
| 1706 | kfree(entry); |
| 1707 | } |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 1708 | spin_unlock(&smi->proc_entry_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1709 | remove_proc_entry(smi->proc_dir_name, proc_ipmi_root); |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 1710 | #endif /* CONFIG_PROC_FS */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1711 | } |
| 1712 | |
| 1713 | static int |
| 1714 | send_channel_info_cmd(ipmi_smi_t intf, int chan) |
| 1715 | { |
| 1716 | struct kernel_ipmi_msg msg; |
| 1717 | unsigned char data[1]; |
| 1718 | struct ipmi_system_interface_addr si; |
| 1719 | |
| 1720 | si.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; |
| 1721 | si.channel = IPMI_BMC_CHANNEL; |
| 1722 | si.lun = 0; |
| 1723 | |
| 1724 | msg.netfn = IPMI_NETFN_APP_REQUEST; |
| 1725 | msg.cmd = IPMI_GET_CHANNEL_INFO_CMD; |
| 1726 | msg.data = data; |
| 1727 | msg.data_len = 1; |
| 1728 | data[0] = chan; |
| 1729 | return i_ipmi_request(NULL, |
| 1730 | intf, |
| 1731 | (struct ipmi_addr *) &si, |
| 1732 | 0, |
| 1733 | &msg, |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 1734 | intf, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1735 | NULL, |
| 1736 | NULL, |
| 1737 | 0, |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 1738 | intf->channels[0].address, |
| 1739 | intf->channels[0].lun, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1740 | -1, 0); |
| 1741 | } |
| 1742 | |
| 1743 | static void |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 1744 | channel_handler(ipmi_smi_t intf, struct ipmi_recv_msg *msg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1745 | { |
| 1746 | int rv = 0; |
| 1747 | int chan; |
| 1748 | |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 1749 | if ((msg->addr.addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) |
| 1750 | && (msg->msg.netfn == IPMI_NETFN_APP_RESPONSE) |
| 1751 | && (msg->msg.cmd == IPMI_GET_CHANNEL_INFO_CMD)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1752 | { |
| 1753 | /* It's the one we want */ |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 1754 | if (msg->msg.data[0] != 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1755 | /* Got an error from the channel, just go on. */ |
| 1756 | |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 1757 | if (msg->msg.data[0] == IPMI_INVALID_COMMAND_ERR) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1758 | /* If the MC does not support this |
| 1759 | command, that is legal. We just |
| 1760 | assume it has one IPMB at channel |
| 1761 | zero. */ |
| 1762 | intf->channels[0].medium |
| 1763 | = IPMI_CHANNEL_MEDIUM_IPMB; |
| 1764 | intf->channels[0].protocol |
| 1765 | = IPMI_CHANNEL_PROTOCOL_IPMB; |
| 1766 | rv = -ENOSYS; |
| 1767 | |
| 1768 | intf->curr_channel = IPMI_MAX_CHANNELS; |
| 1769 | wake_up(&intf->waitq); |
| 1770 | goto out; |
| 1771 | } |
| 1772 | goto next_channel; |
| 1773 | } |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 1774 | if (msg->msg.data_len < 4) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1775 | /* Message not big enough, just go on. */ |
| 1776 | goto next_channel; |
| 1777 | } |
| 1778 | chan = intf->curr_channel; |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 1779 | intf->channels[chan].medium = msg->msg.data[2] & 0x7f; |
| 1780 | intf->channels[chan].protocol = msg->msg.data[3] & 0x1f; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1781 | |
| 1782 | next_channel: |
| 1783 | intf->curr_channel++; |
| 1784 | if (intf->curr_channel >= IPMI_MAX_CHANNELS) |
| 1785 | wake_up(&intf->waitq); |
| 1786 | else |
| 1787 | rv = send_channel_info_cmd(intf, intf->curr_channel); |
| 1788 | |
| 1789 | if (rv) { |
| 1790 | /* Got an error somehow, just give up. */ |
| 1791 | intf->curr_channel = IPMI_MAX_CHANNELS; |
| 1792 | wake_up(&intf->waitq); |
| 1793 | |
| 1794 | printk(KERN_WARNING PFX |
| 1795 | "Error sending channel information: %d\n", |
| 1796 | rv); |
| 1797 | } |
| 1798 | } |
| 1799 | out: |
| 1800 | return; |
| 1801 | } |
| 1802 | |
| 1803 | int ipmi_register_smi(struct ipmi_smi_handlers *handlers, |
| 1804 | void *send_info, |
| 1805 | unsigned char version_major, |
| 1806 | unsigned char version_minor, |
| 1807 | unsigned char slave_addr, |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 1808 | ipmi_smi_t *new_intf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1809 | { |
| 1810 | int i, j; |
| 1811 | int rv; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 1812 | ipmi_smi_t intf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1813 | unsigned long flags; |
| 1814 | |
| 1815 | |
| 1816 | /* Make sure the driver is actually initialized, this handles |
| 1817 | problems with initialization order. */ |
| 1818 | if (!initialized) { |
| 1819 | rv = ipmi_init_msghandler(); |
| 1820 | if (rv) |
| 1821 | return rv; |
| 1822 | /* The init code doesn't return an error if it was turned |
| 1823 | off, but it won't initialize. Check that. */ |
| 1824 | if (!initialized) |
| 1825 | return -ENODEV; |
| 1826 | } |
| 1827 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 1828 | intf = kmalloc(sizeof(*intf), GFP_KERNEL); |
| 1829 | if (!intf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1830 | return -ENOMEM; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 1831 | memset(intf, 0, sizeof(*intf)); |
| 1832 | intf->intf_num = -1; |
| 1833 | kref_init(&intf->refcount); |
| 1834 | intf->version_major = version_major; |
| 1835 | intf->version_minor = version_minor; |
| 1836 | for (j = 0; j < IPMI_MAX_CHANNELS; j++) { |
| 1837 | intf->channels[j].address = IPMI_BMC_SLAVE_ADDR; |
| 1838 | intf->channels[j].lun = 2; |
| 1839 | } |
| 1840 | if (slave_addr != 0) |
| 1841 | intf->channels[0].address = slave_addr; |
| 1842 | INIT_LIST_HEAD(&intf->users); |
| 1843 | intf->handlers = handlers; |
| 1844 | intf->send_info = send_info; |
| 1845 | spin_lock_init(&intf->seq_lock); |
| 1846 | for (j = 0; j < IPMI_IPMB_NUM_SEQ; j++) { |
| 1847 | intf->seq_table[j].inuse = 0; |
| 1848 | intf->seq_table[j].seqid = 0; |
| 1849 | } |
| 1850 | intf->curr_seq = 0; |
| 1851 | #ifdef CONFIG_PROC_FS |
| 1852 | spin_lock_init(&intf->proc_entry_lock); |
| 1853 | #endif |
| 1854 | spin_lock_init(&intf->waiting_msgs_lock); |
| 1855 | INIT_LIST_HEAD(&intf->waiting_msgs); |
| 1856 | spin_lock_init(&intf->events_lock); |
| 1857 | INIT_LIST_HEAD(&intf->waiting_events); |
| 1858 | intf->waiting_events_count = 0; |
Corey Minyard | e61fb5b | 2005-11-07 01:00:05 -0800 | [diff] [blame] | 1859 | init_MUTEX(&intf->cmd_rcvrs_lock); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 1860 | INIT_LIST_HEAD(&intf->cmd_rcvrs); |
| 1861 | init_waitqueue_head(&intf->waitq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1862 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 1863 | spin_lock_init(&intf->counter_lock); |
| 1864 | intf->proc_dir = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1865 | |
| 1866 | rv = -ENOMEM; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 1867 | spin_lock_irqsave(&interfaces_lock, flags); |
Corey Minyard | e8b3361 | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 1868 | for (i = 0; i < MAX_IPMI_INTERFACES; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1869 | if (ipmi_interfaces[i] == NULL) { |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 1870 | intf->intf_num = i; |
| 1871 | /* Reserve the entry till we are done. */ |
| 1872 | ipmi_interfaces[i] = IPMI_INVALID_INTERFACE_ENTRY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1873 | rv = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1874 | break; |
| 1875 | } |
| 1876 | } |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 1877 | spin_unlock_irqrestore(&interfaces_lock, flags); |
| 1878 | if (rv) |
| 1879 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1880 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 1881 | /* FIXME - this is an ugly kludge, this sets the intf for the |
| 1882 | caller before sending any messages with it. */ |
| 1883 | *new_intf = intf; |
| 1884 | |
| 1885 | if ((version_major > 1) |
| 1886 | || ((version_major == 1) && (version_minor >= 5))) |
| 1887 | { |
| 1888 | /* Start scanning the channels to see what is |
| 1889 | available. */ |
| 1890 | intf->null_user_handler = channel_handler; |
| 1891 | intf->curr_channel = 0; |
| 1892 | rv = send_channel_info_cmd(intf, 0); |
| 1893 | if (rv) |
| 1894 | goto out; |
| 1895 | |
| 1896 | /* Wait for the channel info to be read. */ |
| 1897 | wait_event(intf->waitq, |
| 1898 | intf->curr_channel >= IPMI_MAX_CHANNELS); |
| 1899 | } else { |
| 1900 | /* Assume a single IPMB channel at zero. */ |
| 1901 | intf->channels[0].medium = IPMI_CHANNEL_MEDIUM_IPMB; |
| 1902 | intf->channels[0].protocol = IPMI_CHANNEL_PROTOCOL_IPMB; |
| 1903 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1904 | |
| 1905 | if (rv == 0) |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 1906 | rv = add_proc_entries(intf, i); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1907 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 1908 | out: |
| 1909 | if (rv) { |
| 1910 | if (intf->proc_dir) |
| 1911 | remove_proc_entries(intf); |
| 1912 | kref_put(&intf->refcount, intf_free); |
| 1913 | if (i < MAX_IPMI_INTERFACES) { |
| 1914 | spin_lock_irqsave(&interfaces_lock, flags); |
| 1915 | ipmi_interfaces[i] = NULL; |
| 1916 | spin_unlock_irqrestore(&interfaces_lock, flags); |
| 1917 | } |
| 1918 | } else { |
| 1919 | spin_lock_irqsave(&interfaces_lock, flags); |
| 1920 | ipmi_interfaces[i] = intf; |
| 1921 | spin_unlock_irqrestore(&interfaces_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1922 | call_smi_watchers(i); |
| 1923 | } |
| 1924 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1925 | return rv; |
| 1926 | } |
| 1927 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1928 | int ipmi_unregister_smi(ipmi_smi_t intf) |
| 1929 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1930 | int i; |
| 1931 | struct ipmi_smi_watcher *w; |
| 1932 | unsigned long flags; |
| 1933 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 1934 | spin_lock_irqsave(&interfaces_lock, flags); |
| 1935 | for (i = 0; i < MAX_IPMI_INTERFACES; i++) { |
| 1936 | if (ipmi_interfaces[i] == intf) { |
| 1937 | /* Set the interface number reserved until we |
| 1938 | * are done. */ |
| 1939 | ipmi_interfaces[i] = IPMI_INVALID_INTERFACE_ENTRY; |
| 1940 | intf->intf_num = -1; |
| 1941 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1942 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1943 | } |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 1944 | spin_unlock_irqrestore(&interfaces_lock,flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1945 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 1946 | if (i == MAX_IPMI_INTERFACES) |
| 1947 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1948 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 1949 | remove_proc_entries(intf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1950 | |
| 1951 | /* Call all the watcher interfaces to tell them that |
| 1952 | an interface is gone. */ |
| 1953 | down_read(&smi_watchers_sem); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 1954 | list_for_each_entry(w, &smi_watchers, link) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1955 | w->smi_gone(i); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1956 | up_read(&smi_watchers_sem); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 1957 | |
| 1958 | /* Allow the entry to be reused now. */ |
| 1959 | spin_lock_irqsave(&interfaces_lock, flags); |
| 1960 | ipmi_interfaces[i] = NULL; |
| 1961 | spin_unlock_irqrestore(&interfaces_lock,flags); |
| 1962 | |
| 1963 | kref_put(&intf->refcount, intf_free); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1964 | return 0; |
| 1965 | } |
| 1966 | |
| 1967 | static int handle_ipmb_get_msg_rsp(ipmi_smi_t intf, |
| 1968 | struct ipmi_smi_msg *msg) |
| 1969 | { |
| 1970 | struct ipmi_ipmb_addr ipmb_addr; |
| 1971 | struct ipmi_recv_msg *recv_msg; |
| 1972 | unsigned long flags; |
| 1973 | |
| 1974 | |
| 1975 | /* This is 11, not 10, because the response must contain a |
| 1976 | * completion code. */ |
| 1977 | if (msg->rsp_size < 11) { |
| 1978 | /* Message not big enough, just ignore it. */ |
| 1979 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 1980 | intf->invalid_ipmb_responses++; |
| 1981 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 1982 | return 0; |
| 1983 | } |
| 1984 | |
| 1985 | if (msg->rsp[2] != 0) { |
| 1986 | /* An error getting the response, just ignore it. */ |
| 1987 | return 0; |
| 1988 | } |
| 1989 | |
| 1990 | ipmb_addr.addr_type = IPMI_IPMB_ADDR_TYPE; |
| 1991 | ipmb_addr.slave_addr = msg->rsp[6]; |
| 1992 | ipmb_addr.channel = msg->rsp[3] & 0x0f; |
| 1993 | ipmb_addr.lun = msg->rsp[7] & 3; |
| 1994 | |
| 1995 | /* It's a response from a remote entity. Look up the sequence |
| 1996 | number and handle the response. */ |
| 1997 | if (intf_find_seq(intf, |
| 1998 | msg->rsp[7] >> 2, |
| 1999 | msg->rsp[3] & 0x0f, |
| 2000 | msg->rsp[8], |
| 2001 | (msg->rsp[4] >> 2) & (~1), |
| 2002 | (struct ipmi_addr *) &(ipmb_addr), |
| 2003 | &recv_msg)) |
| 2004 | { |
| 2005 | /* We were unable to find the sequence number, |
| 2006 | so just nuke the message. */ |
| 2007 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 2008 | intf->unhandled_ipmb_responses++; |
| 2009 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 2010 | return 0; |
| 2011 | } |
| 2012 | |
| 2013 | memcpy(recv_msg->msg_data, |
| 2014 | &(msg->rsp[9]), |
| 2015 | msg->rsp_size - 9); |
| 2016 | /* THe other fields matched, so no need to set them, except |
| 2017 | for netfn, which needs to be the response that was |
| 2018 | returned, not the request value. */ |
| 2019 | recv_msg->msg.netfn = msg->rsp[4] >> 2; |
| 2020 | recv_msg->msg.data = recv_msg->msg_data; |
| 2021 | recv_msg->msg.data_len = msg->rsp_size - 10; |
| 2022 | recv_msg->recv_type = IPMI_RESPONSE_RECV_TYPE; |
| 2023 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 2024 | intf->handled_ipmb_responses++; |
| 2025 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 2026 | deliver_response(recv_msg); |
| 2027 | |
| 2028 | return 0; |
| 2029 | } |
| 2030 | |
| 2031 | static int handle_ipmb_get_msg_cmd(ipmi_smi_t intf, |
| 2032 | struct ipmi_smi_msg *msg) |
| 2033 | { |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2034 | struct cmd_rcvr *rcvr; |
| 2035 | int rv = 0; |
| 2036 | unsigned char netfn; |
| 2037 | unsigned char cmd; |
| 2038 | ipmi_user_t user = NULL; |
| 2039 | struct ipmi_ipmb_addr *ipmb_addr; |
| 2040 | struct ipmi_recv_msg *recv_msg; |
| 2041 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2042 | |
| 2043 | if (msg->rsp_size < 10) { |
| 2044 | /* Message not big enough, just ignore it. */ |
| 2045 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 2046 | intf->invalid_commands++; |
| 2047 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 2048 | return 0; |
| 2049 | } |
| 2050 | |
| 2051 | if (msg->rsp[2] != 0) { |
| 2052 | /* An error getting the response, just ignore it. */ |
| 2053 | return 0; |
| 2054 | } |
| 2055 | |
| 2056 | netfn = msg->rsp[4] >> 2; |
| 2057 | cmd = msg->rsp[8]; |
| 2058 | |
Corey Minyard | e61fb5b | 2005-11-07 01:00:05 -0800 | [diff] [blame] | 2059 | rcu_read_lock(); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2060 | rcvr = find_cmd_rcvr(intf, netfn, cmd); |
| 2061 | if (rcvr) { |
| 2062 | user = rcvr->user; |
| 2063 | kref_get(&user->refcount); |
| 2064 | } else |
| 2065 | user = NULL; |
Corey Minyard | e61fb5b | 2005-11-07 01:00:05 -0800 | [diff] [blame] | 2066 | rcu_read_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2067 | |
| 2068 | if (user == NULL) { |
| 2069 | /* We didn't find a user, deliver an error response. */ |
| 2070 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 2071 | intf->unhandled_commands++; |
| 2072 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 2073 | |
| 2074 | msg->data[0] = (IPMI_NETFN_APP_REQUEST << 2); |
| 2075 | msg->data[1] = IPMI_SEND_MSG_CMD; |
| 2076 | msg->data[2] = msg->rsp[3]; |
| 2077 | msg->data[3] = msg->rsp[6]; |
| 2078 | msg->data[4] = ((netfn + 1) << 2) | (msg->rsp[7] & 0x3); |
| 2079 | msg->data[5] = ipmb_checksum(&(msg->data[3]), 2); |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 2080 | msg->data[6] = intf->channels[msg->rsp[3] & 0xf].address; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2081 | /* rqseq/lun */ |
| 2082 | msg->data[7] = (msg->rsp[7] & 0xfc) | (msg->rsp[4] & 0x3); |
| 2083 | msg->data[8] = msg->rsp[8]; /* cmd */ |
| 2084 | msg->data[9] = IPMI_INVALID_CMD_COMPLETION_CODE; |
| 2085 | msg->data[10] = ipmb_checksum(&(msg->data[6]), 4); |
| 2086 | msg->data_size = 11; |
| 2087 | |
| 2088 | #ifdef DEBUG_MSGING |
| 2089 | { |
| 2090 | int m; |
| 2091 | printk("Invalid command:"); |
Corey Minyard | e8b3361 | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 2092 | for (m = 0; m < msg->data_size; m++) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2093 | printk(" %2.2x", msg->data[m]); |
| 2094 | printk("\n"); |
| 2095 | } |
| 2096 | #endif |
| 2097 | intf->handlers->sender(intf->send_info, msg, 0); |
| 2098 | |
| 2099 | rv = -1; /* We used the message, so return the value that |
| 2100 | causes it to not be freed or queued. */ |
| 2101 | } else { |
| 2102 | /* Deliver the message to the user. */ |
| 2103 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 2104 | intf->handled_commands++; |
| 2105 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 2106 | |
| 2107 | recv_msg = ipmi_alloc_recv_msg(); |
| 2108 | if (! recv_msg) { |
| 2109 | /* We couldn't allocate memory for the |
| 2110 | message, so requeue it for handling |
| 2111 | later. */ |
| 2112 | rv = 1; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2113 | kref_put(&user->refcount, free_user); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2114 | } else { |
| 2115 | /* Extract the source address from the data. */ |
| 2116 | ipmb_addr = (struct ipmi_ipmb_addr *) &recv_msg->addr; |
| 2117 | ipmb_addr->addr_type = IPMI_IPMB_ADDR_TYPE; |
| 2118 | ipmb_addr->slave_addr = msg->rsp[6]; |
| 2119 | ipmb_addr->lun = msg->rsp[7] & 3; |
| 2120 | ipmb_addr->channel = msg->rsp[3] & 0xf; |
| 2121 | |
| 2122 | /* Extract the rest of the message information |
| 2123 | from the IPMB header.*/ |
| 2124 | recv_msg->user = user; |
| 2125 | recv_msg->recv_type = IPMI_CMD_RECV_TYPE; |
| 2126 | recv_msg->msgid = msg->rsp[7] >> 2; |
| 2127 | recv_msg->msg.netfn = msg->rsp[4] >> 2; |
| 2128 | recv_msg->msg.cmd = msg->rsp[8]; |
| 2129 | recv_msg->msg.data = recv_msg->msg_data; |
| 2130 | |
| 2131 | /* We chop off 10, not 9 bytes because the checksum |
| 2132 | at the end also needs to be removed. */ |
| 2133 | recv_msg->msg.data_len = msg->rsp_size - 10; |
| 2134 | memcpy(recv_msg->msg_data, |
| 2135 | &(msg->rsp[9]), |
| 2136 | msg->rsp_size - 10); |
| 2137 | deliver_response(recv_msg); |
| 2138 | } |
| 2139 | } |
| 2140 | |
| 2141 | return rv; |
| 2142 | } |
| 2143 | |
| 2144 | static int handle_lan_get_msg_rsp(ipmi_smi_t intf, |
| 2145 | struct ipmi_smi_msg *msg) |
| 2146 | { |
| 2147 | struct ipmi_lan_addr lan_addr; |
| 2148 | struct ipmi_recv_msg *recv_msg; |
| 2149 | unsigned long flags; |
| 2150 | |
| 2151 | |
| 2152 | /* This is 13, not 12, because the response must contain a |
| 2153 | * completion code. */ |
| 2154 | if (msg->rsp_size < 13) { |
| 2155 | /* Message not big enough, just ignore it. */ |
| 2156 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 2157 | intf->invalid_lan_responses++; |
| 2158 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 2159 | return 0; |
| 2160 | } |
| 2161 | |
| 2162 | if (msg->rsp[2] != 0) { |
| 2163 | /* An error getting the response, just ignore it. */ |
| 2164 | return 0; |
| 2165 | } |
| 2166 | |
| 2167 | lan_addr.addr_type = IPMI_LAN_ADDR_TYPE; |
| 2168 | lan_addr.session_handle = msg->rsp[4]; |
| 2169 | lan_addr.remote_SWID = msg->rsp[8]; |
| 2170 | lan_addr.local_SWID = msg->rsp[5]; |
| 2171 | lan_addr.channel = msg->rsp[3] & 0x0f; |
| 2172 | lan_addr.privilege = msg->rsp[3] >> 4; |
| 2173 | lan_addr.lun = msg->rsp[9] & 3; |
| 2174 | |
| 2175 | /* It's a response from a remote entity. Look up the sequence |
| 2176 | number and handle the response. */ |
| 2177 | if (intf_find_seq(intf, |
| 2178 | msg->rsp[9] >> 2, |
| 2179 | msg->rsp[3] & 0x0f, |
| 2180 | msg->rsp[10], |
| 2181 | (msg->rsp[6] >> 2) & (~1), |
| 2182 | (struct ipmi_addr *) &(lan_addr), |
| 2183 | &recv_msg)) |
| 2184 | { |
| 2185 | /* We were unable to find the sequence number, |
| 2186 | so just nuke the message. */ |
| 2187 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 2188 | intf->unhandled_lan_responses++; |
| 2189 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 2190 | return 0; |
| 2191 | } |
| 2192 | |
| 2193 | memcpy(recv_msg->msg_data, |
| 2194 | &(msg->rsp[11]), |
| 2195 | msg->rsp_size - 11); |
| 2196 | /* The other fields matched, so no need to set them, except |
| 2197 | for netfn, which needs to be the response that was |
| 2198 | returned, not the request value. */ |
| 2199 | recv_msg->msg.netfn = msg->rsp[6] >> 2; |
| 2200 | recv_msg->msg.data = recv_msg->msg_data; |
| 2201 | recv_msg->msg.data_len = msg->rsp_size - 12; |
| 2202 | recv_msg->recv_type = IPMI_RESPONSE_RECV_TYPE; |
| 2203 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 2204 | intf->handled_lan_responses++; |
| 2205 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 2206 | deliver_response(recv_msg); |
| 2207 | |
| 2208 | return 0; |
| 2209 | } |
| 2210 | |
| 2211 | static int handle_lan_get_msg_cmd(ipmi_smi_t intf, |
| 2212 | struct ipmi_smi_msg *msg) |
| 2213 | { |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2214 | struct cmd_rcvr *rcvr; |
| 2215 | int rv = 0; |
| 2216 | unsigned char netfn; |
| 2217 | unsigned char cmd; |
| 2218 | ipmi_user_t user = NULL; |
| 2219 | struct ipmi_lan_addr *lan_addr; |
| 2220 | struct ipmi_recv_msg *recv_msg; |
| 2221 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2222 | |
| 2223 | if (msg->rsp_size < 12) { |
| 2224 | /* Message not big enough, just ignore it. */ |
| 2225 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 2226 | intf->invalid_commands++; |
| 2227 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 2228 | return 0; |
| 2229 | } |
| 2230 | |
| 2231 | if (msg->rsp[2] != 0) { |
| 2232 | /* An error getting the response, just ignore it. */ |
| 2233 | return 0; |
| 2234 | } |
| 2235 | |
| 2236 | netfn = msg->rsp[6] >> 2; |
| 2237 | cmd = msg->rsp[10]; |
| 2238 | |
Corey Minyard | e61fb5b | 2005-11-07 01:00:05 -0800 | [diff] [blame] | 2239 | rcu_read_lock(); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2240 | rcvr = find_cmd_rcvr(intf, netfn, cmd); |
| 2241 | if (rcvr) { |
| 2242 | user = rcvr->user; |
| 2243 | kref_get(&user->refcount); |
| 2244 | } else |
| 2245 | user = NULL; |
Corey Minyard | e61fb5b | 2005-11-07 01:00:05 -0800 | [diff] [blame] | 2246 | rcu_read_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2247 | |
| 2248 | if (user == NULL) { |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2249 | /* We didn't find a user, just give up. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2250 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 2251 | intf->unhandled_commands++; |
| 2252 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 2253 | |
| 2254 | rv = 0; /* Don't do anything with these messages, just |
| 2255 | allow them to be freed. */ |
| 2256 | } else { |
| 2257 | /* Deliver the message to the user. */ |
| 2258 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 2259 | intf->handled_commands++; |
| 2260 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 2261 | |
| 2262 | recv_msg = ipmi_alloc_recv_msg(); |
| 2263 | if (! recv_msg) { |
| 2264 | /* We couldn't allocate memory for the |
| 2265 | message, so requeue it for handling |
| 2266 | later. */ |
| 2267 | rv = 1; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2268 | kref_put(&user->refcount, free_user); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2269 | } else { |
| 2270 | /* Extract the source address from the data. */ |
| 2271 | lan_addr = (struct ipmi_lan_addr *) &recv_msg->addr; |
| 2272 | lan_addr->addr_type = IPMI_LAN_ADDR_TYPE; |
| 2273 | lan_addr->session_handle = msg->rsp[4]; |
| 2274 | lan_addr->remote_SWID = msg->rsp[8]; |
| 2275 | lan_addr->local_SWID = msg->rsp[5]; |
| 2276 | lan_addr->lun = msg->rsp[9] & 3; |
| 2277 | lan_addr->channel = msg->rsp[3] & 0xf; |
| 2278 | lan_addr->privilege = msg->rsp[3] >> 4; |
| 2279 | |
| 2280 | /* Extract the rest of the message information |
| 2281 | from the IPMB header.*/ |
| 2282 | recv_msg->user = user; |
| 2283 | recv_msg->recv_type = IPMI_CMD_RECV_TYPE; |
| 2284 | recv_msg->msgid = msg->rsp[9] >> 2; |
| 2285 | recv_msg->msg.netfn = msg->rsp[6] >> 2; |
| 2286 | recv_msg->msg.cmd = msg->rsp[10]; |
| 2287 | recv_msg->msg.data = recv_msg->msg_data; |
| 2288 | |
| 2289 | /* We chop off 12, not 11 bytes because the checksum |
| 2290 | at the end also needs to be removed. */ |
| 2291 | recv_msg->msg.data_len = msg->rsp_size - 12; |
| 2292 | memcpy(recv_msg->msg_data, |
| 2293 | &(msg->rsp[11]), |
| 2294 | msg->rsp_size - 12); |
| 2295 | deliver_response(recv_msg); |
| 2296 | } |
| 2297 | } |
| 2298 | |
| 2299 | return rv; |
| 2300 | } |
| 2301 | |
| 2302 | static void copy_event_into_recv_msg(struct ipmi_recv_msg *recv_msg, |
| 2303 | struct ipmi_smi_msg *msg) |
| 2304 | { |
| 2305 | struct ipmi_system_interface_addr *smi_addr; |
| 2306 | |
| 2307 | recv_msg->msgid = 0; |
| 2308 | smi_addr = (struct ipmi_system_interface_addr *) &(recv_msg->addr); |
| 2309 | smi_addr->addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; |
| 2310 | smi_addr->channel = IPMI_BMC_CHANNEL; |
| 2311 | smi_addr->lun = msg->rsp[0] & 3; |
| 2312 | recv_msg->recv_type = IPMI_ASYNC_EVENT_RECV_TYPE; |
| 2313 | recv_msg->msg.netfn = msg->rsp[0] >> 2; |
| 2314 | recv_msg->msg.cmd = msg->rsp[1]; |
| 2315 | memcpy(recv_msg->msg_data, &(msg->rsp[3]), msg->rsp_size - 3); |
| 2316 | recv_msg->msg.data = recv_msg->msg_data; |
| 2317 | recv_msg->msg.data_len = msg->rsp_size - 3; |
| 2318 | } |
| 2319 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2320 | static int handle_read_event_rsp(ipmi_smi_t intf, |
| 2321 | struct ipmi_smi_msg *msg) |
| 2322 | { |
| 2323 | struct ipmi_recv_msg *recv_msg, *recv_msg2; |
| 2324 | struct list_head msgs; |
| 2325 | ipmi_user_t user; |
| 2326 | int rv = 0; |
| 2327 | int deliver_count = 0; |
| 2328 | unsigned long flags; |
| 2329 | |
| 2330 | if (msg->rsp_size < 19) { |
| 2331 | /* Message is too small to be an IPMB event. */ |
| 2332 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 2333 | intf->invalid_events++; |
| 2334 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 2335 | return 0; |
| 2336 | } |
| 2337 | |
| 2338 | if (msg->rsp[2] != 0) { |
| 2339 | /* An error getting the event, just ignore it. */ |
| 2340 | return 0; |
| 2341 | } |
| 2342 | |
| 2343 | INIT_LIST_HEAD(&msgs); |
| 2344 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2345 | spin_lock_irqsave(&intf->events_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2346 | |
| 2347 | spin_lock(&intf->counter_lock); |
| 2348 | intf->events++; |
| 2349 | spin_unlock(&intf->counter_lock); |
| 2350 | |
| 2351 | /* Allocate and fill in one message for every user that is getting |
| 2352 | events. */ |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2353 | rcu_read_lock(); |
| 2354 | list_for_each_entry_rcu(user, &intf->users, link) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2355 | if (! user->gets_events) |
| 2356 | continue; |
| 2357 | |
| 2358 | recv_msg = ipmi_alloc_recv_msg(); |
| 2359 | if (! recv_msg) { |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2360 | rcu_read_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2361 | list_for_each_entry_safe(recv_msg, recv_msg2, &msgs, link) { |
| 2362 | list_del(&recv_msg->link); |
| 2363 | ipmi_free_recv_msg(recv_msg); |
| 2364 | } |
| 2365 | /* We couldn't allocate memory for the |
| 2366 | message, so requeue it for handling |
| 2367 | later. */ |
| 2368 | rv = 1; |
| 2369 | goto out; |
| 2370 | } |
| 2371 | |
| 2372 | deliver_count++; |
| 2373 | |
| 2374 | copy_event_into_recv_msg(recv_msg, msg); |
| 2375 | recv_msg->user = user; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2376 | kref_get(&user->refcount); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2377 | list_add_tail(&(recv_msg->link), &msgs); |
| 2378 | } |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2379 | rcu_read_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2380 | |
| 2381 | if (deliver_count) { |
| 2382 | /* Now deliver all the messages. */ |
| 2383 | list_for_each_entry_safe(recv_msg, recv_msg2, &msgs, link) { |
| 2384 | list_del(&recv_msg->link); |
| 2385 | deliver_response(recv_msg); |
| 2386 | } |
| 2387 | } else if (intf->waiting_events_count < MAX_EVENTS_IN_QUEUE) { |
| 2388 | /* No one to receive the message, put it in queue if there's |
| 2389 | not already too many things in the queue. */ |
| 2390 | recv_msg = ipmi_alloc_recv_msg(); |
| 2391 | if (! recv_msg) { |
| 2392 | /* We couldn't allocate memory for the |
| 2393 | message, so requeue it for handling |
| 2394 | later. */ |
| 2395 | rv = 1; |
| 2396 | goto out; |
| 2397 | } |
| 2398 | |
| 2399 | copy_event_into_recv_msg(recv_msg, msg); |
| 2400 | list_add_tail(&(recv_msg->link), &(intf->waiting_events)); |
| 2401 | } else { |
| 2402 | /* There's too many things in the queue, discard this |
| 2403 | message. */ |
| 2404 | printk(KERN_WARNING PFX "Event queue full, discarding an" |
| 2405 | " incoming event\n"); |
| 2406 | } |
| 2407 | |
| 2408 | out: |
| 2409 | spin_unlock_irqrestore(&(intf->events_lock), flags); |
| 2410 | |
| 2411 | return rv; |
| 2412 | } |
| 2413 | |
| 2414 | static int handle_bmc_rsp(ipmi_smi_t intf, |
| 2415 | struct ipmi_smi_msg *msg) |
| 2416 | { |
| 2417 | struct ipmi_recv_msg *recv_msg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2418 | unsigned long flags; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2419 | struct ipmi_user *user; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2420 | |
| 2421 | recv_msg = (struct ipmi_recv_msg *) msg->user_data; |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 2422 | if (recv_msg == NULL) |
| 2423 | { |
| 2424 | printk(KERN_WARNING"IPMI message received with no owner. This\n" |
| 2425 | "could be because of a malformed message, or\n" |
| 2426 | "because of a hardware error. Contact your\n" |
| 2427 | "hardware vender for assistance\n"); |
| 2428 | return 0; |
| 2429 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2430 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2431 | user = recv_msg->user; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2432 | /* Make sure the user still exists. */ |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2433 | if (user && !user->valid) { |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 2434 | /* The user for the message went away, so give up. */ |
| 2435 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 2436 | intf->unhandled_local_responses++; |
| 2437 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2438 | ipmi_free_recv_msg(recv_msg); |
| 2439 | } else { |
| 2440 | struct ipmi_system_interface_addr *smi_addr; |
| 2441 | |
| 2442 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 2443 | intf->handled_local_responses++; |
| 2444 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 2445 | recv_msg->recv_type = IPMI_RESPONSE_RECV_TYPE; |
| 2446 | recv_msg->msgid = msg->msgid; |
| 2447 | smi_addr = ((struct ipmi_system_interface_addr *) |
| 2448 | &(recv_msg->addr)); |
| 2449 | smi_addr->addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; |
| 2450 | smi_addr->channel = IPMI_BMC_CHANNEL; |
| 2451 | smi_addr->lun = msg->rsp[0] & 3; |
| 2452 | recv_msg->msg.netfn = msg->rsp[0] >> 2; |
| 2453 | recv_msg->msg.cmd = msg->rsp[1]; |
| 2454 | memcpy(recv_msg->msg_data, |
| 2455 | &(msg->rsp[2]), |
| 2456 | msg->rsp_size - 2); |
| 2457 | recv_msg->msg.data = recv_msg->msg_data; |
| 2458 | recv_msg->msg.data_len = msg->rsp_size - 2; |
| 2459 | deliver_response(recv_msg); |
| 2460 | } |
| 2461 | |
| 2462 | return 0; |
| 2463 | } |
| 2464 | |
| 2465 | /* Handle a new message. Return 1 if the message should be requeued, |
| 2466 | 0 if the message should be freed, or -1 if the message should not |
| 2467 | be freed or requeued. */ |
| 2468 | static int handle_new_recv_msg(ipmi_smi_t intf, |
| 2469 | struct ipmi_smi_msg *msg) |
| 2470 | { |
| 2471 | int requeue; |
| 2472 | int chan; |
| 2473 | |
| 2474 | #ifdef DEBUG_MSGING |
| 2475 | int m; |
| 2476 | printk("Recv:"); |
Corey Minyard | e8b3361 | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 2477 | for (m = 0; m < msg->rsp_size; m++) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2478 | printk(" %2.2x", msg->rsp[m]); |
| 2479 | printk("\n"); |
| 2480 | #endif |
| 2481 | if (msg->rsp_size < 2) { |
| 2482 | /* Message is too small to be correct. */ |
| 2483 | printk(KERN_WARNING PFX "BMC returned to small a message" |
| 2484 | " for netfn %x cmd %x, got %d bytes\n", |
| 2485 | (msg->data[0] >> 2) | 1, msg->data[1], msg->rsp_size); |
| 2486 | |
| 2487 | /* Generate an error response for the message. */ |
| 2488 | msg->rsp[0] = msg->data[0] | (1 << 2); |
| 2489 | msg->rsp[1] = msg->data[1]; |
| 2490 | msg->rsp[2] = IPMI_ERR_UNSPECIFIED; |
| 2491 | msg->rsp_size = 3; |
| 2492 | } else if (((msg->rsp[0] >> 2) != ((msg->data[0] >> 2) | 1))/* Netfn */ |
| 2493 | || (msg->rsp[1] != msg->data[1])) /* Command */ |
| 2494 | { |
| 2495 | /* The response is not even marginally correct. */ |
| 2496 | printk(KERN_WARNING PFX "BMC returned incorrect response," |
| 2497 | " expected netfn %x cmd %x, got netfn %x cmd %x\n", |
| 2498 | (msg->data[0] >> 2) | 1, msg->data[1], |
| 2499 | msg->rsp[0] >> 2, msg->rsp[1]); |
| 2500 | |
| 2501 | /* Generate an error response for the message. */ |
| 2502 | msg->rsp[0] = msg->data[0] | (1 << 2); |
| 2503 | msg->rsp[1] = msg->data[1]; |
| 2504 | msg->rsp[2] = IPMI_ERR_UNSPECIFIED; |
| 2505 | msg->rsp_size = 3; |
| 2506 | } |
| 2507 | |
| 2508 | if ((msg->rsp[0] == ((IPMI_NETFN_APP_REQUEST|1) << 2)) |
| 2509 | && (msg->rsp[1] == IPMI_SEND_MSG_CMD) |
| 2510 | && (msg->user_data != NULL)) |
| 2511 | { |
| 2512 | /* It's a response to a response we sent. For this we |
| 2513 | deliver a send message response to the user. */ |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2514 | struct ipmi_recv_msg *recv_msg = msg->user_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2515 | |
| 2516 | requeue = 0; |
| 2517 | if (msg->rsp_size < 2) |
| 2518 | /* Message is too small to be correct. */ |
| 2519 | goto out; |
| 2520 | |
| 2521 | chan = msg->data[2] & 0x0f; |
| 2522 | if (chan >= IPMI_MAX_CHANNELS) |
| 2523 | /* Invalid channel number */ |
| 2524 | goto out; |
| 2525 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2526 | if (!recv_msg) |
| 2527 | goto out; |
| 2528 | |
| 2529 | /* Make sure the user still exists. */ |
| 2530 | if (!recv_msg->user || !recv_msg->user->valid) |
| 2531 | goto out; |
| 2532 | |
| 2533 | recv_msg->recv_type = IPMI_RESPONSE_RESPONSE_TYPE; |
| 2534 | recv_msg->msg.data = recv_msg->msg_data; |
| 2535 | recv_msg->msg.data_len = 1; |
| 2536 | recv_msg->msg_data[0] = msg->rsp[2]; |
| 2537 | deliver_response(recv_msg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2538 | } else if ((msg->rsp[0] == ((IPMI_NETFN_APP_REQUEST|1) << 2)) |
| 2539 | && (msg->rsp[1] == IPMI_GET_MSG_CMD)) |
| 2540 | { |
| 2541 | /* It's from the receive queue. */ |
| 2542 | chan = msg->rsp[3] & 0xf; |
| 2543 | if (chan >= IPMI_MAX_CHANNELS) { |
| 2544 | /* Invalid channel number */ |
| 2545 | requeue = 0; |
| 2546 | goto out; |
| 2547 | } |
| 2548 | |
| 2549 | switch (intf->channels[chan].medium) { |
| 2550 | case IPMI_CHANNEL_MEDIUM_IPMB: |
| 2551 | if (msg->rsp[4] & 0x04) { |
| 2552 | /* It's a response, so find the |
| 2553 | requesting message and send it up. */ |
| 2554 | requeue = handle_ipmb_get_msg_rsp(intf, msg); |
| 2555 | } else { |
| 2556 | /* It's a command to the SMS from some other |
| 2557 | entity. Handle that. */ |
| 2558 | requeue = handle_ipmb_get_msg_cmd(intf, msg); |
| 2559 | } |
| 2560 | break; |
| 2561 | |
| 2562 | case IPMI_CHANNEL_MEDIUM_8023LAN: |
| 2563 | case IPMI_CHANNEL_MEDIUM_ASYNC: |
| 2564 | if (msg->rsp[6] & 0x04) { |
| 2565 | /* It's a response, so find the |
| 2566 | requesting message and send it up. */ |
| 2567 | requeue = handle_lan_get_msg_rsp(intf, msg); |
| 2568 | } else { |
| 2569 | /* It's a command to the SMS from some other |
| 2570 | entity. Handle that. */ |
| 2571 | requeue = handle_lan_get_msg_cmd(intf, msg); |
| 2572 | } |
| 2573 | break; |
| 2574 | |
| 2575 | default: |
| 2576 | /* We don't handle the channel type, so just |
| 2577 | * free the message. */ |
| 2578 | requeue = 0; |
| 2579 | } |
| 2580 | |
| 2581 | } else if ((msg->rsp[0] == ((IPMI_NETFN_APP_REQUEST|1) << 2)) |
| 2582 | && (msg->rsp[1] == IPMI_READ_EVENT_MSG_BUFFER_CMD)) |
| 2583 | { |
| 2584 | /* It's an asyncronous event. */ |
| 2585 | requeue = handle_read_event_rsp(intf, msg); |
| 2586 | } else { |
| 2587 | /* It's a response from the local BMC. */ |
| 2588 | requeue = handle_bmc_rsp(intf, msg); |
| 2589 | } |
| 2590 | |
| 2591 | out: |
| 2592 | return requeue; |
| 2593 | } |
| 2594 | |
| 2595 | /* Handle a new message from the lower layer. */ |
| 2596 | void ipmi_smi_msg_received(ipmi_smi_t intf, |
| 2597 | struct ipmi_smi_msg *msg) |
| 2598 | { |
| 2599 | unsigned long flags; |
| 2600 | int rv; |
| 2601 | |
| 2602 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2603 | if ((msg->data_size >= 2) |
| 2604 | && (msg->data[0] == (IPMI_NETFN_APP_REQUEST << 2)) |
| 2605 | && (msg->data[1] == IPMI_SEND_MSG_CMD) |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2606 | && (msg->user_data == NULL)) |
| 2607 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2608 | /* This is the local response to a command send, start |
| 2609 | the timer for these. The user_data will not be |
| 2610 | NULL if this is a response send, and we will let |
| 2611 | response sends just go through. */ |
| 2612 | |
| 2613 | /* Check for errors, if we get certain errors (ones |
| 2614 | that mean basically we can try again later), we |
| 2615 | ignore them and start the timer. Otherwise we |
| 2616 | report the error immediately. */ |
| 2617 | if ((msg->rsp_size >= 3) && (msg->rsp[2] != 0) |
| 2618 | && (msg->rsp[2] != IPMI_NODE_BUSY_ERR) |
| 2619 | && (msg->rsp[2] != IPMI_LOST_ARBITRATION_ERR)) |
| 2620 | { |
| 2621 | int chan = msg->rsp[3] & 0xf; |
| 2622 | |
| 2623 | /* Got an error sending the message, handle it. */ |
| 2624 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 2625 | if (chan >= IPMI_MAX_CHANNELS) |
| 2626 | ; /* This shouldn't happen */ |
| 2627 | else if ((intf->channels[chan].medium |
| 2628 | == IPMI_CHANNEL_MEDIUM_8023LAN) |
| 2629 | || (intf->channels[chan].medium |
| 2630 | == IPMI_CHANNEL_MEDIUM_ASYNC)) |
| 2631 | intf->sent_lan_command_errs++; |
| 2632 | else |
| 2633 | intf->sent_ipmb_command_errs++; |
| 2634 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 2635 | intf_err_seq(intf, msg->msgid, msg->rsp[2]); |
| 2636 | } else { |
| 2637 | /* The message was sent, start the timer. */ |
| 2638 | intf_start_seq_timer(intf, msg->msgid); |
| 2639 | } |
| 2640 | |
| 2641 | ipmi_free_smi_msg(msg); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2642 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2643 | } |
| 2644 | |
| 2645 | /* To preserve message order, if the list is not empty, we |
| 2646 | tack this message onto the end of the list. */ |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2647 | spin_lock_irqsave(&intf->waiting_msgs_lock, flags); |
| 2648 | if (!list_empty(&intf->waiting_msgs)) { |
| 2649 | list_add_tail(&msg->link, &intf->waiting_msgs); |
Hironobu Ishii | 177294d | 2005-11-11 08:12:21 -0600 | [diff] [blame] | 2650 | spin_unlock_irqrestore(&intf->waiting_msgs_lock, flags); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2651 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2652 | } |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2653 | spin_unlock_irqrestore(&intf->waiting_msgs_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2654 | |
| 2655 | rv = handle_new_recv_msg(intf, msg); |
| 2656 | if (rv > 0) { |
| 2657 | /* Could not handle the message now, just add it to a |
| 2658 | list to handle later. */ |
Hironobu Ishii | 177294d | 2005-11-11 08:12:21 -0600 | [diff] [blame] | 2659 | spin_lock_irqsave(&intf->waiting_msgs_lock, flags); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2660 | list_add_tail(&msg->link, &intf->waiting_msgs); |
Hironobu Ishii | 177294d | 2005-11-11 08:12:21 -0600 | [diff] [blame] | 2661 | spin_unlock_irqrestore(&intf->waiting_msgs_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2662 | } else if (rv == 0) { |
| 2663 | ipmi_free_smi_msg(msg); |
| 2664 | } |
| 2665 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2666 | out: |
| 2667 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2668 | } |
| 2669 | |
| 2670 | void ipmi_smi_watchdog_pretimeout(ipmi_smi_t intf) |
| 2671 | { |
| 2672 | ipmi_user_t user; |
| 2673 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2674 | rcu_read_lock(); |
| 2675 | list_for_each_entry_rcu(user, &intf->users, link) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2676 | if (! user->handler->ipmi_watchdog_pretimeout) |
| 2677 | continue; |
| 2678 | |
| 2679 | user->handler->ipmi_watchdog_pretimeout(user->handler_data); |
| 2680 | } |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2681 | rcu_read_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2682 | } |
| 2683 | |
| 2684 | static void |
| 2685 | handle_msg_timeout(struct ipmi_recv_msg *msg) |
| 2686 | { |
| 2687 | msg->recv_type = IPMI_RESPONSE_RECV_TYPE; |
| 2688 | msg->msg_data[0] = IPMI_TIMEOUT_COMPLETION_CODE; |
| 2689 | msg->msg.netfn |= 1; /* Convert to a response. */ |
| 2690 | msg->msg.data_len = 1; |
| 2691 | msg->msg.data = msg->msg_data; |
| 2692 | deliver_response(msg); |
| 2693 | } |
| 2694 | |
Corey Minyard | 882fe01 | 2005-05-01 08:59:12 -0700 | [diff] [blame] | 2695 | static struct ipmi_smi_msg * |
| 2696 | smi_from_recv_msg(ipmi_smi_t intf, struct ipmi_recv_msg *recv_msg, |
| 2697 | unsigned char seq, long seqid) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2698 | { |
Corey Minyard | 882fe01 | 2005-05-01 08:59:12 -0700 | [diff] [blame] | 2699 | struct ipmi_smi_msg *smi_msg = ipmi_alloc_smi_msg(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2700 | if (!smi_msg) |
| 2701 | /* If we can't allocate the message, then just return, we |
| 2702 | get 4 retries, so this should be ok. */ |
Corey Minyard | 882fe01 | 2005-05-01 08:59:12 -0700 | [diff] [blame] | 2703 | return NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2704 | |
| 2705 | memcpy(smi_msg->data, recv_msg->msg.data, recv_msg->msg.data_len); |
| 2706 | smi_msg->data_size = recv_msg->msg.data_len; |
| 2707 | smi_msg->msgid = STORE_SEQ_IN_MSGID(seq, seqid); |
| 2708 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2709 | #ifdef DEBUG_MSGING |
| 2710 | { |
| 2711 | int m; |
| 2712 | printk("Resend: "); |
Corey Minyard | e8b3361 | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 2713 | for (m = 0; m < smi_msg->data_size; m++) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2714 | printk(" %2.2x", smi_msg->data[m]); |
| 2715 | printk("\n"); |
| 2716 | } |
| 2717 | #endif |
Corey Minyard | 882fe01 | 2005-05-01 08:59:12 -0700 | [diff] [blame] | 2718 | return smi_msg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2719 | } |
| 2720 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2721 | static void check_msg_timeout(ipmi_smi_t intf, struct seq_table *ent, |
| 2722 | struct list_head *timeouts, long timeout_period, |
| 2723 | int slot, unsigned long *flags) |
| 2724 | { |
| 2725 | struct ipmi_recv_msg *msg; |
| 2726 | |
| 2727 | if (!ent->inuse) |
| 2728 | return; |
| 2729 | |
| 2730 | ent->timeout -= timeout_period; |
| 2731 | if (ent->timeout > 0) |
| 2732 | return; |
| 2733 | |
| 2734 | if (ent->retries_left == 0) { |
| 2735 | /* The message has used all its retries. */ |
| 2736 | ent->inuse = 0; |
| 2737 | msg = ent->recv_msg; |
| 2738 | list_add_tail(&msg->link, timeouts); |
| 2739 | spin_lock(&intf->counter_lock); |
| 2740 | if (ent->broadcast) |
| 2741 | intf->timed_out_ipmb_broadcasts++; |
| 2742 | else if (ent->recv_msg->addr.addr_type == IPMI_LAN_ADDR_TYPE) |
| 2743 | intf->timed_out_lan_commands++; |
| 2744 | else |
| 2745 | intf->timed_out_ipmb_commands++; |
| 2746 | spin_unlock(&intf->counter_lock); |
| 2747 | } else { |
| 2748 | struct ipmi_smi_msg *smi_msg; |
| 2749 | /* More retries, send again. */ |
| 2750 | |
| 2751 | /* Start with the max timer, set to normal |
| 2752 | timer after the message is sent. */ |
| 2753 | ent->timeout = MAX_MSG_TIMEOUT; |
| 2754 | ent->retries_left--; |
| 2755 | spin_lock(&intf->counter_lock); |
| 2756 | if (ent->recv_msg->addr.addr_type == IPMI_LAN_ADDR_TYPE) |
| 2757 | intf->retransmitted_lan_commands++; |
| 2758 | else |
| 2759 | intf->retransmitted_ipmb_commands++; |
| 2760 | spin_unlock(&intf->counter_lock); |
| 2761 | |
| 2762 | smi_msg = smi_from_recv_msg(intf, ent->recv_msg, slot, |
| 2763 | ent->seqid); |
| 2764 | if (! smi_msg) |
| 2765 | return; |
| 2766 | |
| 2767 | spin_unlock_irqrestore(&intf->seq_lock, *flags); |
| 2768 | /* Send the new message. We send with a zero |
| 2769 | * priority. It timed out, I doubt time is |
| 2770 | * that critical now, and high priority |
| 2771 | * messages are really only for messages to the |
| 2772 | * local MC, which don't get resent. */ |
| 2773 | intf->handlers->sender(intf->send_info, |
| 2774 | smi_msg, 0); |
| 2775 | spin_lock_irqsave(&intf->seq_lock, *flags); |
| 2776 | } |
| 2777 | } |
| 2778 | |
| 2779 | static void ipmi_timeout_handler(long timeout_period) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2780 | { |
| 2781 | ipmi_smi_t intf; |
| 2782 | struct list_head timeouts; |
| 2783 | struct ipmi_recv_msg *msg, *msg2; |
| 2784 | struct ipmi_smi_msg *smi_msg, *smi_msg2; |
| 2785 | unsigned long flags; |
| 2786 | int i, j; |
| 2787 | |
| 2788 | INIT_LIST_HEAD(&timeouts); |
| 2789 | |
| 2790 | spin_lock(&interfaces_lock); |
Corey Minyard | e8b3361 | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 2791 | for (i = 0; i < MAX_IPMI_INTERFACES; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2792 | intf = ipmi_interfaces[i]; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2793 | if (IPMI_INVALID_INTERFACE(intf)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2794 | continue; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2795 | kref_get(&intf->refcount); |
| 2796 | spin_unlock(&interfaces_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2797 | |
| 2798 | /* See if any waiting messages need to be processed. */ |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2799 | spin_lock_irqsave(&intf->waiting_msgs_lock, flags); |
| 2800 | list_for_each_entry_safe(smi_msg, smi_msg2, &intf->waiting_msgs, link) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2801 | if (! handle_new_recv_msg(intf, smi_msg)) { |
| 2802 | list_del(&smi_msg->link); |
| 2803 | ipmi_free_smi_msg(smi_msg); |
| 2804 | } else { |
| 2805 | /* To preserve message order, quit if we |
| 2806 | can't handle a message. */ |
| 2807 | break; |
| 2808 | } |
| 2809 | } |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2810 | spin_unlock_irqrestore(&intf->waiting_msgs_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2811 | |
| 2812 | /* Go through the seq table and find any messages that |
| 2813 | have timed out, putting them in the timeouts |
| 2814 | list. */ |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2815 | spin_lock_irqsave(&intf->seq_lock, flags); |
| 2816 | for (j = 0; j < IPMI_IPMB_NUM_SEQ; j++) |
| 2817 | check_msg_timeout(intf, &(intf->seq_table[j]), |
| 2818 | &timeouts, timeout_period, j, |
| 2819 | &flags); |
| 2820 | spin_unlock_irqrestore(&intf->seq_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2821 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2822 | list_for_each_entry_safe(msg, msg2, &timeouts, link) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2823 | handle_msg_timeout(msg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2824 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2825 | kref_put(&intf->refcount, intf_free); |
| 2826 | spin_lock(&interfaces_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2827 | } |
| 2828 | spin_unlock(&interfaces_lock); |
| 2829 | } |
| 2830 | |
| 2831 | static void ipmi_request_event(void) |
| 2832 | { |
| 2833 | ipmi_smi_t intf; |
| 2834 | int i; |
| 2835 | |
| 2836 | spin_lock(&interfaces_lock); |
Corey Minyard | e8b3361 | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 2837 | for (i = 0; i < MAX_IPMI_INTERFACES; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2838 | intf = ipmi_interfaces[i]; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2839 | if (IPMI_INVALID_INTERFACE(intf)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2840 | continue; |
| 2841 | |
| 2842 | intf->handlers->request_events(intf->send_info); |
| 2843 | } |
| 2844 | spin_unlock(&interfaces_lock); |
| 2845 | } |
| 2846 | |
| 2847 | static struct timer_list ipmi_timer; |
| 2848 | |
| 2849 | /* Call every ~100 ms. */ |
| 2850 | #define IPMI_TIMEOUT_TIME 100 |
| 2851 | |
| 2852 | /* How many jiffies does it take to get to the timeout time. */ |
| 2853 | #define IPMI_TIMEOUT_JIFFIES ((IPMI_TIMEOUT_TIME * HZ) / 1000) |
| 2854 | |
| 2855 | /* Request events from the queue every second (this is the number of |
| 2856 | IPMI_TIMEOUT_TIMES between event requests). Hopefully, in the |
| 2857 | future, IPMI will add a way to know immediately if an event is in |
| 2858 | the queue and this silliness can go away. */ |
| 2859 | #define IPMI_REQUEST_EV_TIME (1000 / (IPMI_TIMEOUT_TIME)) |
| 2860 | |
Corey Minyard | 8f43f84 | 2005-06-23 22:01:40 -0700 | [diff] [blame] | 2861 | static atomic_t stop_operation; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2862 | static unsigned int ticks_to_req_ev = IPMI_REQUEST_EV_TIME; |
| 2863 | |
| 2864 | static void ipmi_timeout(unsigned long data) |
| 2865 | { |
Corey Minyard | 8f43f84 | 2005-06-23 22:01:40 -0700 | [diff] [blame] | 2866 | if (atomic_read(&stop_operation)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2867 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2868 | |
| 2869 | ticks_to_req_ev--; |
| 2870 | if (ticks_to_req_ev == 0) { |
| 2871 | ipmi_request_event(); |
| 2872 | ticks_to_req_ev = IPMI_REQUEST_EV_TIME; |
| 2873 | } |
| 2874 | |
| 2875 | ipmi_timeout_handler(IPMI_TIMEOUT_TIME); |
| 2876 | |
Corey Minyard | 8f43f84 | 2005-06-23 22:01:40 -0700 | [diff] [blame] | 2877 | mod_timer(&ipmi_timer, jiffies + IPMI_TIMEOUT_JIFFIES); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2878 | } |
| 2879 | |
| 2880 | |
| 2881 | static atomic_t smi_msg_inuse_count = ATOMIC_INIT(0); |
| 2882 | static atomic_t recv_msg_inuse_count = ATOMIC_INIT(0); |
| 2883 | |
| 2884 | /* FIXME - convert these to slabs. */ |
| 2885 | static void free_smi_msg(struct ipmi_smi_msg *msg) |
| 2886 | { |
| 2887 | atomic_dec(&smi_msg_inuse_count); |
| 2888 | kfree(msg); |
| 2889 | } |
| 2890 | |
| 2891 | struct ipmi_smi_msg *ipmi_alloc_smi_msg(void) |
| 2892 | { |
| 2893 | struct ipmi_smi_msg *rv; |
| 2894 | rv = kmalloc(sizeof(struct ipmi_smi_msg), GFP_ATOMIC); |
| 2895 | if (rv) { |
| 2896 | rv->done = free_smi_msg; |
| 2897 | rv->user_data = NULL; |
| 2898 | atomic_inc(&smi_msg_inuse_count); |
| 2899 | } |
| 2900 | return rv; |
| 2901 | } |
| 2902 | |
| 2903 | static void free_recv_msg(struct ipmi_recv_msg *msg) |
| 2904 | { |
| 2905 | atomic_dec(&recv_msg_inuse_count); |
| 2906 | kfree(msg); |
| 2907 | } |
| 2908 | |
| 2909 | struct ipmi_recv_msg *ipmi_alloc_recv_msg(void) |
| 2910 | { |
| 2911 | struct ipmi_recv_msg *rv; |
| 2912 | |
| 2913 | rv = kmalloc(sizeof(struct ipmi_recv_msg), GFP_ATOMIC); |
| 2914 | if (rv) { |
| 2915 | rv->done = free_recv_msg; |
| 2916 | atomic_inc(&recv_msg_inuse_count); |
| 2917 | } |
| 2918 | return rv; |
| 2919 | } |
| 2920 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2921 | void ipmi_free_recv_msg(struct ipmi_recv_msg *msg) |
| 2922 | { |
| 2923 | if (msg->user) |
| 2924 | kref_put(&msg->user->refcount, free_user); |
| 2925 | msg->done(msg); |
| 2926 | } |
| 2927 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2928 | #ifdef CONFIG_IPMI_PANIC_EVENT |
| 2929 | |
| 2930 | static void dummy_smi_done_handler(struct ipmi_smi_msg *msg) |
| 2931 | { |
| 2932 | } |
| 2933 | |
| 2934 | static void dummy_recv_done_handler(struct ipmi_recv_msg *msg) |
| 2935 | { |
| 2936 | } |
| 2937 | |
| 2938 | #ifdef CONFIG_IPMI_PANIC_STRING |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 2939 | static void event_receiver_fetcher(ipmi_smi_t intf, struct ipmi_recv_msg *msg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2940 | { |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 2941 | if ((msg->addr.addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) |
| 2942 | && (msg->msg.netfn == IPMI_NETFN_SENSOR_EVENT_RESPONSE) |
| 2943 | && (msg->msg.cmd == IPMI_GET_EVENT_RECEIVER_CMD) |
| 2944 | && (msg->msg.data[0] == IPMI_CC_NO_ERROR)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2945 | { |
| 2946 | /* A get event receiver command, save it. */ |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 2947 | intf->event_receiver = msg->msg.data[1]; |
| 2948 | intf->event_receiver_lun = msg->msg.data[2] & 0x3; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2949 | } |
| 2950 | } |
| 2951 | |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 2952 | static void device_id_fetcher(ipmi_smi_t intf, struct ipmi_recv_msg *msg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2953 | { |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 2954 | if ((msg->addr.addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) |
| 2955 | && (msg->msg.netfn == IPMI_NETFN_APP_RESPONSE) |
| 2956 | && (msg->msg.cmd == IPMI_GET_DEVICE_ID_CMD) |
| 2957 | && (msg->msg.data[0] == IPMI_CC_NO_ERROR)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2958 | { |
| 2959 | /* A get device id command, save if we are an event |
| 2960 | receiver or generator. */ |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 2961 | intf->local_sel_device = (msg->msg.data[6] >> 2) & 1; |
| 2962 | intf->local_event_generator = (msg->msg.data[6] >> 5) & 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2963 | } |
| 2964 | } |
| 2965 | #endif |
| 2966 | |
| 2967 | static void send_panic_events(char *str) |
| 2968 | { |
| 2969 | struct kernel_ipmi_msg msg; |
| 2970 | ipmi_smi_t intf; |
| 2971 | unsigned char data[16]; |
| 2972 | int i; |
| 2973 | struct ipmi_system_interface_addr *si; |
| 2974 | struct ipmi_addr addr; |
| 2975 | struct ipmi_smi_msg smi_msg; |
| 2976 | struct ipmi_recv_msg recv_msg; |
| 2977 | |
| 2978 | si = (struct ipmi_system_interface_addr *) &addr; |
| 2979 | si->addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; |
| 2980 | si->channel = IPMI_BMC_CHANNEL; |
| 2981 | si->lun = 0; |
| 2982 | |
| 2983 | /* Fill in an event telling that we have failed. */ |
| 2984 | msg.netfn = 0x04; /* Sensor or Event. */ |
| 2985 | msg.cmd = 2; /* Platform event command. */ |
| 2986 | msg.data = data; |
| 2987 | msg.data_len = 8; |
Matt Domsch | cda315a | 2005-12-12 00:37:32 -0800 | [diff] [blame] | 2988 | data[0] = 0x41; /* Kernel generator ID, IPMI table 5-4 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2989 | data[1] = 0x03; /* This is for IPMI 1.0. */ |
| 2990 | data[2] = 0x20; /* OS Critical Stop, IPMI table 36-3 */ |
| 2991 | data[4] = 0x6f; /* Sensor specific, IPMI table 36-1 */ |
| 2992 | data[5] = 0xa1; /* Runtime stop OEM bytes 2 & 3. */ |
| 2993 | |
| 2994 | /* Put a few breadcrumbs in. Hopefully later we can add more things |
| 2995 | to make the panic events more useful. */ |
| 2996 | if (str) { |
| 2997 | data[3] = str[0]; |
| 2998 | data[6] = str[1]; |
| 2999 | data[7] = str[2]; |
| 3000 | } |
| 3001 | |
| 3002 | smi_msg.done = dummy_smi_done_handler; |
| 3003 | recv_msg.done = dummy_recv_done_handler; |
| 3004 | |
| 3005 | /* For every registered interface, send the event. */ |
Corey Minyard | e8b3361 | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 3006 | for (i = 0; i < MAX_IPMI_INTERFACES; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3007 | intf = ipmi_interfaces[i]; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3008 | if (IPMI_INVALID_INTERFACE(intf)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3009 | continue; |
| 3010 | |
| 3011 | /* Send the event announcing the panic. */ |
| 3012 | intf->handlers->set_run_to_completion(intf->send_info, 1); |
| 3013 | i_ipmi_request(NULL, |
| 3014 | intf, |
| 3015 | &addr, |
| 3016 | 0, |
| 3017 | &msg, |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 3018 | intf, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3019 | &smi_msg, |
| 3020 | &recv_msg, |
| 3021 | 0, |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 3022 | intf->channels[0].address, |
| 3023 | intf->channels[0].lun, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3024 | 0, 1); /* Don't retry, and don't wait. */ |
| 3025 | } |
| 3026 | |
| 3027 | #ifdef CONFIG_IPMI_PANIC_STRING |
| 3028 | /* On every interface, dump a bunch of OEM event holding the |
| 3029 | string. */ |
| 3030 | if (!str) |
| 3031 | return; |
| 3032 | |
Corey Minyard | e8b3361 | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 3033 | for (i = 0; i < MAX_IPMI_INTERFACES; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3034 | char *p = str; |
| 3035 | struct ipmi_ipmb_addr *ipmb; |
| 3036 | int j; |
| 3037 | |
| 3038 | intf = ipmi_interfaces[i]; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3039 | if (IPMI_INVALID_INTERFACE(intf)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3040 | continue; |
| 3041 | |
| 3042 | /* First job here is to figure out where to send the |
| 3043 | OEM events. There's no way in IPMI to send OEM |
| 3044 | events using an event send command, so we have to |
| 3045 | find the SEL to put them in and stick them in |
| 3046 | there. */ |
| 3047 | |
| 3048 | /* Get capabilities from the get device id. */ |
| 3049 | intf->local_sel_device = 0; |
| 3050 | intf->local_event_generator = 0; |
| 3051 | intf->event_receiver = 0; |
| 3052 | |
| 3053 | /* Request the device info from the local MC. */ |
| 3054 | msg.netfn = IPMI_NETFN_APP_REQUEST; |
| 3055 | msg.cmd = IPMI_GET_DEVICE_ID_CMD; |
| 3056 | msg.data = NULL; |
| 3057 | msg.data_len = 0; |
| 3058 | intf->null_user_handler = device_id_fetcher; |
| 3059 | i_ipmi_request(NULL, |
| 3060 | intf, |
| 3061 | &addr, |
| 3062 | 0, |
| 3063 | &msg, |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 3064 | intf, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3065 | &smi_msg, |
| 3066 | &recv_msg, |
| 3067 | 0, |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 3068 | intf->channels[0].address, |
| 3069 | intf->channels[0].lun, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3070 | 0, 1); /* Don't retry, and don't wait. */ |
| 3071 | |
| 3072 | if (intf->local_event_generator) { |
| 3073 | /* Request the event receiver from the local MC. */ |
| 3074 | msg.netfn = IPMI_NETFN_SENSOR_EVENT_REQUEST; |
| 3075 | msg.cmd = IPMI_GET_EVENT_RECEIVER_CMD; |
| 3076 | msg.data = NULL; |
| 3077 | msg.data_len = 0; |
| 3078 | intf->null_user_handler = event_receiver_fetcher; |
| 3079 | i_ipmi_request(NULL, |
| 3080 | intf, |
| 3081 | &addr, |
| 3082 | 0, |
| 3083 | &msg, |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 3084 | intf, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3085 | &smi_msg, |
| 3086 | &recv_msg, |
| 3087 | 0, |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 3088 | intf->channels[0].address, |
| 3089 | intf->channels[0].lun, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3090 | 0, 1); /* no retry, and no wait. */ |
| 3091 | } |
| 3092 | intf->null_user_handler = NULL; |
| 3093 | |
| 3094 | /* Validate the event receiver. The low bit must not |
| 3095 | be 1 (it must be a valid IPMB address), it cannot |
| 3096 | be zero, and it must not be my address. */ |
| 3097 | if (((intf->event_receiver & 1) == 0) |
| 3098 | && (intf->event_receiver != 0) |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 3099 | && (intf->event_receiver != intf->channels[0].address)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3100 | { |
| 3101 | /* The event receiver is valid, send an IPMB |
| 3102 | message. */ |
| 3103 | ipmb = (struct ipmi_ipmb_addr *) &addr; |
| 3104 | ipmb->addr_type = IPMI_IPMB_ADDR_TYPE; |
| 3105 | ipmb->channel = 0; /* FIXME - is this right? */ |
| 3106 | ipmb->lun = intf->event_receiver_lun; |
| 3107 | ipmb->slave_addr = intf->event_receiver; |
| 3108 | } else if (intf->local_sel_device) { |
| 3109 | /* The event receiver was not valid (or was |
| 3110 | me), but I am an SEL device, just dump it |
| 3111 | in my SEL. */ |
| 3112 | si = (struct ipmi_system_interface_addr *) &addr; |
| 3113 | si->addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; |
| 3114 | si->channel = IPMI_BMC_CHANNEL; |
| 3115 | si->lun = 0; |
| 3116 | } else |
| 3117 | continue; /* No where to send the event. */ |
| 3118 | |
| 3119 | |
| 3120 | msg.netfn = IPMI_NETFN_STORAGE_REQUEST; /* Storage. */ |
| 3121 | msg.cmd = IPMI_ADD_SEL_ENTRY_CMD; |
| 3122 | msg.data = data; |
| 3123 | msg.data_len = 16; |
| 3124 | |
| 3125 | j = 0; |
| 3126 | while (*p) { |
| 3127 | int size = strlen(p); |
| 3128 | |
| 3129 | if (size > 11) |
| 3130 | size = 11; |
| 3131 | data[0] = 0; |
| 3132 | data[1] = 0; |
| 3133 | data[2] = 0xf0; /* OEM event without timestamp. */ |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 3134 | data[3] = intf->channels[0].address; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3135 | data[4] = j++; /* sequence # */ |
| 3136 | /* Always give 11 bytes, so strncpy will fill |
| 3137 | it with zeroes for me. */ |
| 3138 | strncpy(data+5, p, 11); |
| 3139 | p += size; |
| 3140 | |
| 3141 | i_ipmi_request(NULL, |
| 3142 | intf, |
| 3143 | &addr, |
| 3144 | 0, |
| 3145 | &msg, |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 3146 | intf, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3147 | &smi_msg, |
| 3148 | &recv_msg, |
| 3149 | 0, |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 3150 | intf->channels[0].address, |
| 3151 | intf->channels[0].lun, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3152 | 0, 1); /* no retry, and no wait. */ |
| 3153 | } |
| 3154 | } |
| 3155 | #endif /* CONFIG_IPMI_PANIC_STRING */ |
| 3156 | } |
| 3157 | #endif /* CONFIG_IPMI_PANIC_EVENT */ |
| 3158 | |
| 3159 | static int has_paniced = 0; |
| 3160 | |
| 3161 | static int panic_event(struct notifier_block *this, |
| 3162 | unsigned long event, |
| 3163 | void *ptr) |
| 3164 | { |
| 3165 | int i; |
| 3166 | ipmi_smi_t intf; |
| 3167 | |
| 3168 | if (has_paniced) |
| 3169 | return NOTIFY_DONE; |
| 3170 | has_paniced = 1; |
| 3171 | |
| 3172 | /* For every registered interface, set it to run to completion. */ |
Corey Minyard | e8b3361 | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 3173 | for (i = 0; i < MAX_IPMI_INTERFACES; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3174 | intf = ipmi_interfaces[i]; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3175 | if (IPMI_INVALID_INTERFACE(intf)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3176 | continue; |
| 3177 | |
| 3178 | intf->handlers->set_run_to_completion(intf->send_info, 1); |
| 3179 | } |
| 3180 | |
| 3181 | #ifdef CONFIG_IPMI_PANIC_EVENT |
| 3182 | send_panic_events(ptr); |
| 3183 | #endif |
| 3184 | |
| 3185 | return NOTIFY_DONE; |
| 3186 | } |
| 3187 | |
| 3188 | static struct notifier_block panic_block = { |
| 3189 | .notifier_call = panic_event, |
| 3190 | .next = NULL, |
| 3191 | .priority = 200 /* priority: INT_MAX >= x >= 0 */ |
| 3192 | }; |
| 3193 | |
| 3194 | static int ipmi_init_msghandler(void) |
| 3195 | { |
| 3196 | int i; |
| 3197 | |
| 3198 | if (initialized) |
| 3199 | return 0; |
| 3200 | |
| 3201 | printk(KERN_INFO "ipmi message handler version " |
Corey Minyard | 1fdd75b | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 3202 | IPMI_DRIVER_VERSION "\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3203 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3204 | for (i = 0; i < MAX_IPMI_INTERFACES; i++) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3205 | ipmi_interfaces[i] = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3206 | |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 3207 | #ifdef CONFIG_PROC_FS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3208 | proc_ipmi_root = proc_mkdir("ipmi", NULL); |
| 3209 | if (!proc_ipmi_root) { |
| 3210 | printk(KERN_ERR PFX "Unable to create IPMI proc dir"); |
| 3211 | return -ENOMEM; |
| 3212 | } |
| 3213 | |
| 3214 | proc_ipmi_root->owner = THIS_MODULE; |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 3215 | #endif /* CONFIG_PROC_FS */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3216 | |
| 3217 | init_timer(&ipmi_timer); |
| 3218 | ipmi_timer.data = 0; |
| 3219 | ipmi_timer.function = ipmi_timeout; |
| 3220 | ipmi_timer.expires = jiffies + IPMI_TIMEOUT_JIFFIES; |
| 3221 | add_timer(&ipmi_timer); |
| 3222 | |
| 3223 | notifier_chain_register(&panic_notifier_list, &panic_block); |
| 3224 | |
| 3225 | initialized = 1; |
| 3226 | |
| 3227 | return 0; |
| 3228 | } |
| 3229 | |
| 3230 | static __init int ipmi_init_msghandler_mod(void) |
| 3231 | { |
| 3232 | ipmi_init_msghandler(); |
| 3233 | return 0; |
| 3234 | } |
| 3235 | |
| 3236 | static __exit void cleanup_ipmi(void) |
| 3237 | { |
| 3238 | int count; |
| 3239 | |
| 3240 | if (!initialized) |
| 3241 | return; |
| 3242 | |
| 3243 | notifier_chain_unregister(&panic_notifier_list, &panic_block); |
| 3244 | |
| 3245 | /* This can't be called if any interfaces exist, so no worry about |
| 3246 | shutting down the interfaces. */ |
| 3247 | |
| 3248 | /* Tell the timer to stop, then wait for it to stop. This avoids |
| 3249 | problems with race conditions removing the timer here. */ |
Corey Minyard | 8f43f84 | 2005-06-23 22:01:40 -0700 | [diff] [blame] | 3250 | atomic_inc(&stop_operation); |
| 3251 | del_timer_sync(&ipmi_timer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3252 | |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 3253 | #ifdef CONFIG_PROC_FS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3254 | remove_proc_entry(proc_ipmi_root->name, &proc_root); |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 3255 | #endif /* CONFIG_PROC_FS */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3256 | |
| 3257 | initialized = 0; |
| 3258 | |
| 3259 | /* Check for buffer leaks. */ |
| 3260 | count = atomic_read(&smi_msg_inuse_count); |
| 3261 | if (count != 0) |
| 3262 | printk(KERN_WARNING PFX "SMI message count %d at exit\n", |
| 3263 | count); |
| 3264 | count = atomic_read(&recv_msg_inuse_count); |
| 3265 | if (count != 0) |
| 3266 | printk(KERN_WARNING PFX "recv message count %d at exit\n", |
| 3267 | count); |
| 3268 | } |
| 3269 | module_exit(cleanup_ipmi); |
| 3270 | |
| 3271 | module_init(ipmi_init_msghandler_mod); |
| 3272 | MODULE_LICENSE("GPL"); |
Corey Minyard | 1fdd75b | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 3273 | MODULE_AUTHOR("Corey Minyard <minyard@mvista.com>"); |
| 3274 | MODULE_DESCRIPTION("Incoming and outgoing message routing for an IPMI interface."); |
| 3275 | MODULE_VERSION(IPMI_DRIVER_VERSION); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3276 | |
| 3277 | EXPORT_SYMBOL(ipmi_create_user); |
| 3278 | EXPORT_SYMBOL(ipmi_destroy_user); |
| 3279 | EXPORT_SYMBOL(ipmi_get_version); |
| 3280 | EXPORT_SYMBOL(ipmi_request_settime); |
| 3281 | EXPORT_SYMBOL(ipmi_request_supply_msgs); |
| 3282 | EXPORT_SYMBOL(ipmi_register_smi); |
| 3283 | EXPORT_SYMBOL(ipmi_unregister_smi); |
| 3284 | EXPORT_SYMBOL(ipmi_register_for_cmd); |
| 3285 | EXPORT_SYMBOL(ipmi_unregister_for_cmd); |
| 3286 | EXPORT_SYMBOL(ipmi_smi_msg_received); |
| 3287 | EXPORT_SYMBOL(ipmi_smi_watchdog_pretimeout); |
| 3288 | EXPORT_SYMBOL(ipmi_alloc_smi_msg); |
| 3289 | EXPORT_SYMBOL(ipmi_addr_length); |
| 3290 | EXPORT_SYMBOL(ipmi_validate_addr); |
| 3291 | EXPORT_SYMBOL(ipmi_set_gets_events); |
| 3292 | EXPORT_SYMBOL(ipmi_smi_watcher_register); |
| 3293 | EXPORT_SYMBOL(ipmi_smi_watcher_unregister); |
| 3294 | EXPORT_SYMBOL(ipmi_set_my_address); |
| 3295 | EXPORT_SYMBOL(ipmi_get_my_address); |
| 3296 | EXPORT_SYMBOL(ipmi_set_my_LUN); |
| 3297 | EXPORT_SYMBOL(ipmi_get_my_LUN); |
| 3298 | EXPORT_SYMBOL(ipmi_smi_add_proc_entry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3299 | EXPORT_SYMBOL(ipmi_user_set_run_to_completion); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3300 | EXPORT_SYMBOL(ipmi_free_recv_msg); |