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 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | #include <linux/module.h> |
| 35 | #include <linux/errno.h> |
| 36 | #include <asm/system.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | #include <linux/poll.h> |
| 38 | #include <linux/spinlock.h> |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 39 | #include <linux/mutex.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | #include <linux/slab.h> |
| 41 | #include <linux/ipmi.h> |
| 42 | #include <linux/ipmi_smi.h> |
| 43 | #include <linux/notifier.h> |
| 44 | #include <linux/init.h> |
| 45 | #include <linux/proc_fs.h> |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 46 | #include <linux/rcupdate.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | |
| 48 | #define PFX "IPMI message handler: " |
Corey Minyard | 1fdd75b | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 49 | |
Corey Minyard | b967513 | 2006-12-06 20:41:02 -0800 | [diff] [blame] | 50 | #define IPMI_DRIVER_VERSION "39.1" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | |
| 52 | static struct ipmi_recv_msg *ipmi_alloc_recv_msg(void); |
| 53 | static int ipmi_init_msghandler(void); |
| 54 | |
Randy Dunlap | 0c8204b | 2006-12-10 02:19:06 -0800 | [diff] [blame] | 55 | static int initialized; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 57 | #ifdef CONFIG_PROC_FS |
Randy Dunlap | 0c8204b | 2006-12-10 02:19:06 -0800 | [diff] [blame] | 58 | static struct proc_dir_entry *proc_ipmi_root; |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 59 | #endif /* CONFIG_PROC_FS */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 60 | |
Corey Minyard | b967513 | 2006-12-06 20:41:02 -0800 | [diff] [blame] | 61 | /* Remain in auto-maintenance mode for this amount of time (in ms). */ |
| 62 | #define IPMI_MAINTENANCE_MODE_TIMEOUT 30000 |
| 63 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | #define MAX_EVENTS_IN_QUEUE 25 |
| 65 | |
| 66 | /* Don't let a message sit in a queue forever, always time it with at lest |
| 67 | the max message timer. This is in milliseconds. */ |
| 68 | #define MAX_MSG_TIMEOUT 60000 |
| 69 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 70 | |
| 71 | /* |
| 72 | * The main "user" data structure. |
| 73 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 74 | struct ipmi_user |
| 75 | { |
| 76 | struct list_head link; |
| 77 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 78 | /* Set to "0" when the user is destroyed. */ |
| 79 | int valid; |
| 80 | |
| 81 | struct kref refcount; |
| 82 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | /* The upper layer that handles receive messages. */ |
| 84 | struct ipmi_user_hndl *handler; |
| 85 | void *handler_data; |
| 86 | |
| 87 | /* The interface this user is bound to. */ |
| 88 | ipmi_smi_t intf; |
| 89 | |
| 90 | /* Does this interface receive IPMI events? */ |
| 91 | int gets_events; |
| 92 | }; |
| 93 | |
| 94 | struct cmd_rcvr |
| 95 | { |
| 96 | struct list_head link; |
| 97 | |
| 98 | ipmi_user_t user; |
| 99 | unsigned char netfn; |
| 100 | unsigned char cmd; |
Corey Minyard | c69c312 | 2006-09-30 23:27:56 -0700 | [diff] [blame] | 101 | unsigned int chans; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 102 | |
| 103 | /* |
| 104 | * This is used to form a linked lised during mass deletion. |
| 105 | * Since this is in an RCU list, we cannot use the link above |
| 106 | * or change any data until the RCU period completes. So we |
| 107 | * use this next variable during mass deletion so we can have |
| 108 | * a list and don't have to wait and restart the search on |
| 109 | * every individual deletion of a command. */ |
| 110 | struct cmd_rcvr *next; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 111 | }; |
| 112 | |
| 113 | struct seq_table |
| 114 | { |
| 115 | unsigned int inuse : 1; |
| 116 | unsigned int broadcast : 1; |
| 117 | |
| 118 | unsigned long timeout; |
| 119 | unsigned long orig_timeout; |
| 120 | unsigned int retries_left; |
| 121 | |
| 122 | /* To verify on an incoming send message response that this is |
| 123 | the message that the response is for, we keep a sequence id |
| 124 | and increment it every time we send a message. */ |
| 125 | long seqid; |
| 126 | |
| 127 | /* This is held so we can properly respond to the message on a |
| 128 | timeout, and it is used to hold the temporary data for |
| 129 | retransmission, too. */ |
| 130 | struct ipmi_recv_msg *recv_msg; |
| 131 | }; |
| 132 | |
| 133 | /* Store the information in a msgid (long) to allow us to find a |
| 134 | sequence table entry from the msgid. */ |
| 135 | #define STORE_SEQ_IN_MSGID(seq, seqid) (((seq&0xff)<<26) | (seqid&0x3ffffff)) |
| 136 | |
| 137 | #define GET_SEQ_FROM_MSGID(msgid, seq, seqid) \ |
| 138 | do { \ |
| 139 | seq = ((msgid >> 26) & 0x3f); \ |
| 140 | seqid = (msgid & 0x3fffff); \ |
Corey Minyard | e8b3361 | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 141 | } while (0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 142 | |
| 143 | #define NEXT_SEQID(seqid) (((seqid) + 1) & 0x3fffff) |
| 144 | |
| 145 | struct ipmi_channel |
| 146 | { |
| 147 | unsigned char medium; |
| 148 | unsigned char protocol; |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 149 | |
| 150 | /* My slave address. This is initialized to IPMI_BMC_SLAVE_ADDR, |
| 151 | but may be changed by the user. */ |
| 152 | unsigned char address; |
| 153 | |
| 154 | /* My LUN. This should generally stay the SMS LUN, but just in |
| 155 | case... */ |
| 156 | unsigned char lun; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 157 | }; |
| 158 | |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 159 | #ifdef CONFIG_PROC_FS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | struct ipmi_proc_entry |
| 161 | { |
| 162 | char *name; |
| 163 | struct ipmi_proc_entry *next; |
| 164 | }; |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 165 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 166 | |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 167 | struct bmc_device |
| 168 | { |
| 169 | struct platform_device *dev; |
| 170 | struct ipmi_device_id id; |
| 171 | unsigned char guid[16]; |
| 172 | int guid_set; |
| 173 | |
| 174 | struct kref refcount; |
| 175 | |
| 176 | /* bmc device attributes */ |
| 177 | struct device_attribute device_id_attr; |
| 178 | struct device_attribute provides_dev_sdrs_attr; |
| 179 | struct device_attribute revision_attr; |
| 180 | struct device_attribute firmware_rev_attr; |
| 181 | struct device_attribute version_attr; |
| 182 | struct device_attribute add_dev_support_attr; |
| 183 | struct device_attribute manufacturer_id_attr; |
| 184 | struct device_attribute product_id_attr; |
| 185 | struct device_attribute guid_attr; |
| 186 | struct device_attribute aux_firmware_rev_attr; |
| 187 | }; |
| 188 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 189 | #define IPMI_IPMB_NUM_SEQ 64 |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 190 | #define IPMI_MAX_CHANNELS 16 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 191 | struct ipmi_smi |
| 192 | { |
| 193 | /* What interface number are we? */ |
| 194 | int intf_num; |
| 195 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 196 | struct kref refcount; |
| 197 | |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 198 | /* Used for a list of interfaces. */ |
| 199 | struct list_head link; |
| 200 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 201 | /* The list of upper layers that are using me. seq_lock |
| 202 | * protects this. */ |
| 203 | struct list_head users; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 204 | |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 205 | /* Information to supply to users. */ |
| 206 | unsigned char ipmi_version_major; |
| 207 | unsigned char ipmi_version_minor; |
| 208 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 209 | /* Used for wake ups at startup. */ |
| 210 | wait_queue_head_t waitq; |
| 211 | |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 212 | struct bmc_device *bmc; |
| 213 | char *my_dev_name; |
Corey Minyard | 759643b | 2006-12-06 20:40:59 -0800 | [diff] [blame] | 214 | char *sysfs_name; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 215 | |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 216 | /* This is the lower-layer's sender routine. Note that you |
| 217 | * must either be holding the ipmi_interfaces_mutex or be in |
| 218 | * an umpreemptible region to use this. You must fetch the |
| 219 | * value into a local variable and make sure it is not NULL. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | struct ipmi_smi_handlers *handlers; |
| 221 | void *send_info; |
| 222 | |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 223 | #ifdef CONFIG_PROC_FS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 224 | /* A list of proc entries for this interface. This does not |
| 225 | need a lock, only one thread creates it and only one thread |
| 226 | destroys it. */ |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 227 | spinlock_t proc_entry_lock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 228 | struct ipmi_proc_entry *proc_entries; |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 229 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 230 | |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 231 | /* Driver-model device for the system interface. */ |
| 232 | struct device *si_dev; |
| 233 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 234 | /* A table of sequence numbers for this interface. We use the |
| 235 | sequence numbers for IPMB messages that go out of the |
| 236 | interface to match them up with their responses. A routine |
| 237 | is called periodically to time the items in this list. */ |
| 238 | spinlock_t seq_lock; |
| 239 | struct seq_table seq_table[IPMI_IPMB_NUM_SEQ]; |
| 240 | int curr_seq; |
| 241 | |
| 242 | /* Messages that were delayed for some reason (out of memory, |
| 243 | for instance), will go in here to be processed later in a |
| 244 | periodic timer interrupt. */ |
| 245 | spinlock_t waiting_msgs_lock; |
| 246 | struct list_head waiting_msgs; |
| 247 | |
| 248 | /* The list of command receivers that are registered for commands |
| 249 | on this interface. */ |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 250 | struct mutex cmd_rcvrs_mutex; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 251 | struct list_head cmd_rcvrs; |
| 252 | |
| 253 | /* Events that were queues because no one was there to receive |
| 254 | them. */ |
| 255 | spinlock_t events_lock; /* For dealing with event stuff. */ |
| 256 | struct list_head waiting_events; |
| 257 | unsigned int waiting_events_count; /* How many events in queue? */ |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 258 | int delivering_events; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 259 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 260 | /* The event receiver for my BMC, only really used at panic |
| 261 | shutdown as a place to store this. */ |
| 262 | unsigned char event_receiver; |
| 263 | unsigned char event_receiver_lun; |
| 264 | unsigned char local_sel_device; |
| 265 | unsigned char local_event_generator; |
| 266 | |
Corey Minyard | b967513 | 2006-12-06 20:41:02 -0800 | [diff] [blame] | 267 | /* For handling of maintenance mode. */ |
| 268 | int maintenance_mode; |
| 269 | int maintenance_mode_enable; |
| 270 | int auto_maintenance_timeout; |
| 271 | spinlock_t maintenance_mode_lock; /* Used in a timer... */ |
| 272 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 273 | /* A cheap hack, if this is non-null and a message to an |
| 274 | interface comes in with a NULL user, call this routine with |
| 275 | it. Note that the message will still be freed by the |
| 276 | caller. This only works on the system interface. */ |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 277 | 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] | 278 | |
| 279 | /* When we are scanning the channels for an SMI, this will |
| 280 | tell which channel we are scanning. */ |
| 281 | int curr_channel; |
| 282 | |
| 283 | /* Channel information */ |
| 284 | struct ipmi_channel channels[IPMI_MAX_CHANNELS]; |
| 285 | |
| 286 | /* Proc FS stuff. */ |
| 287 | struct proc_dir_entry *proc_dir; |
| 288 | char proc_dir_name[10]; |
| 289 | |
| 290 | spinlock_t counter_lock; /* For making counters atomic. */ |
| 291 | |
| 292 | /* Commands we got that were invalid. */ |
| 293 | unsigned int sent_invalid_commands; |
| 294 | |
| 295 | /* Commands we sent to the MC. */ |
| 296 | unsigned int sent_local_commands; |
| 297 | /* Responses from the MC that were delivered to a user. */ |
| 298 | unsigned int handled_local_responses; |
| 299 | /* Responses from the MC that were not delivered to a user. */ |
| 300 | unsigned int unhandled_local_responses; |
| 301 | |
| 302 | /* Commands we sent out to the IPMB bus. */ |
| 303 | unsigned int sent_ipmb_commands; |
| 304 | /* Commands sent on the IPMB that had errors on the SEND CMD */ |
| 305 | unsigned int sent_ipmb_command_errs; |
| 306 | /* Each retransmit increments this count. */ |
| 307 | unsigned int retransmitted_ipmb_commands; |
| 308 | /* When a message times out (runs out of retransmits) this is |
| 309 | incremented. */ |
| 310 | unsigned int timed_out_ipmb_commands; |
| 311 | |
| 312 | /* This is like above, but for broadcasts. Broadcasts are |
| 313 | *not* included in the above count (they are expected to |
| 314 | time out). */ |
| 315 | unsigned int timed_out_ipmb_broadcasts; |
| 316 | |
| 317 | /* Responses I have sent to the IPMB bus. */ |
| 318 | unsigned int sent_ipmb_responses; |
| 319 | |
| 320 | /* The response was delivered to the user. */ |
| 321 | unsigned int handled_ipmb_responses; |
| 322 | /* The response had invalid data in it. */ |
| 323 | unsigned int invalid_ipmb_responses; |
| 324 | /* The response didn't have anyone waiting for it. */ |
| 325 | unsigned int unhandled_ipmb_responses; |
| 326 | |
| 327 | /* Commands we sent out to the IPMB bus. */ |
| 328 | unsigned int sent_lan_commands; |
| 329 | /* Commands sent on the IPMB that had errors on the SEND CMD */ |
| 330 | unsigned int sent_lan_command_errs; |
| 331 | /* Each retransmit increments this count. */ |
| 332 | unsigned int retransmitted_lan_commands; |
| 333 | /* When a message times out (runs out of retransmits) this is |
| 334 | incremented. */ |
| 335 | unsigned int timed_out_lan_commands; |
| 336 | |
| 337 | /* Responses I have sent to the IPMB bus. */ |
| 338 | unsigned int sent_lan_responses; |
| 339 | |
| 340 | /* The response was delivered to the user. */ |
| 341 | unsigned int handled_lan_responses; |
| 342 | /* The response had invalid data in it. */ |
| 343 | unsigned int invalid_lan_responses; |
| 344 | /* The response didn't have anyone waiting for it. */ |
| 345 | unsigned int unhandled_lan_responses; |
| 346 | |
| 347 | /* The command was delivered to the user. */ |
| 348 | unsigned int handled_commands; |
| 349 | /* The command had invalid data in it. */ |
| 350 | unsigned int invalid_commands; |
| 351 | /* The command didn't have anyone waiting for it. */ |
| 352 | unsigned int unhandled_commands; |
| 353 | |
| 354 | /* Invalid data in an event. */ |
| 355 | unsigned int invalid_events; |
| 356 | /* Events that were received with the proper format. */ |
| 357 | unsigned int events; |
| 358 | }; |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 359 | #define to_si_intf_from_dev(device) container_of(device, struct ipmi_smi, dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 360 | |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 361 | /** |
| 362 | * The driver model view of the IPMI messaging driver. |
| 363 | */ |
| 364 | static struct device_driver ipmidriver = { |
| 365 | .name = "ipmi", |
| 366 | .bus = &platform_bus_type |
| 367 | }; |
| 368 | static DEFINE_MUTEX(ipmidriver_mutex); |
| 369 | |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 370 | static struct list_head ipmi_interfaces = LIST_HEAD_INIT(ipmi_interfaces); |
| 371 | static DEFINE_MUTEX(ipmi_interfaces_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 372 | |
| 373 | /* List of watchers that want to know when smi's are added and |
| 374 | deleted. */ |
| 375 | static struct list_head smi_watchers = LIST_HEAD_INIT(smi_watchers); |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 376 | static DEFINE_MUTEX(smi_watchers_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 377 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 378 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 379 | static void free_recv_msg_list(struct list_head *q) |
| 380 | { |
| 381 | struct ipmi_recv_msg *msg, *msg2; |
| 382 | |
| 383 | list_for_each_entry_safe(msg, msg2, q, link) { |
| 384 | list_del(&msg->link); |
| 385 | ipmi_free_recv_msg(msg); |
| 386 | } |
| 387 | } |
| 388 | |
Corey Minyard | f3ce6a0 | 2006-11-08 17:44:52 -0800 | [diff] [blame] | 389 | static void free_smi_msg_list(struct list_head *q) |
| 390 | { |
| 391 | struct ipmi_smi_msg *msg, *msg2; |
| 392 | |
| 393 | list_for_each_entry_safe(msg, msg2, q, link) { |
| 394 | list_del(&msg->link); |
| 395 | ipmi_free_smi_msg(msg); |
| 396 | } |
| 397 | } |
| 398 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 399 | static void clean_up_interface_data(ipmi_smi_t intf) |
| 400 | { |
| 401 | int i; |
| 402 | struct cmd_rcvr *rcvr, *rcvr2; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 403 | struct list_head list; |
| 404 | |
Corey Minyard | f3ce6a0 | 2006-11-08 17:44:52 -0800 | [diff] [blame] | 405 | free_smi_msg_list(&intf->waiting_msgs); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 406 | free_recv_msg_list(&intf->waiting_events); |
| 407 | |
Corey Minyard | 78ba2fa | 2007-02-10 01:45:45 -0800 | [diff] [blame] | 408 | /* |
| 409 | * Wholesale remove all the entries from the list in the |
| 410 | * interface and wait for RCU to know that none are in use. |
| 411 | */ |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 412 | mutex_lock(&intf->cmd_rcvrs_mutex); |
Corey Minyard | 78ba2fa | 2007-02-10 01:45:45 -0800 | [diff] [blame] | 413 | INIT_LIST_HEAD(&list); |
| 414 | list_splice_init_rcu(&intf->cmd_rcvrs, &list, synchronize_rcu); |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 415 | mutex_unlock(&intf->cmd_rcvrs_mutex); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 416 | |
| 417 | list_for_each_entry_safe(rcvr, rcvr2, &list, link) |
| 418 | kfree(rcvr); |
| 419 | |
| 420 | for (i = 0; i < IPMI_IPMB_NUM_SEQ; i++) { |
| 421 | if ((intf->seq_table[i].inuse) |
| 422 | && (intf->seq_table[i].recv_msg)) |
| 423 | { |
| 424 | ipmi_free_recv_msg(intf->seq_table[i].recv_msg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 425 | } |
| 426 | } |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 427 | } |
| 428 | |
| 429 | static void intf_free(struct kref *ref) |
| 430 | { |
| 431 | ipmi_smi_t intf = container_of(ref, struct ipmi_smi, refcount); |
| 432 | |
| 433 | clean_up_interface_data(intf); |
| 434 | kfree(intf); |
| 435 | } |
| 436 | |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 437 | struct watcher_entry { |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 438 | int intf_num; |
| 439 | ipmi_smi_t intf; |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 440 | struct list_head link; |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 441 | }; |
| 442 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 443 | int ipmi_smi_watcher_register(struct ipmi_smi_watcher *watcher) |
| 444 | { |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 445 | ipmi_smi_t intf; |
| 446 | struct list_head to_deliver = LIST_HEAD_INIT(to_deliver); |
| 447 | struct watcher_entry *e, *e2; |
| 448 | |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 449 | mutex_lock(&smi_watchers_mutex); |
| 450 | |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 451 | mutex_lock(&ipmi_interfaces_mutex); |
| 452 | |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 453 | /* Build a list of things to deliver. */ |
Corey Minyard | 78ba2fa | 2007-02-10 01:45:45 -0800 | [diff] [blame] | 454 | list_for_each_entry(intf, &ipmi_interfaces, link) { |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 455 | if (intf->intf_num == -1) |
| 456 | continue; |
| 457 | e = kmalloc(sizeof(*e), GFP_KERNEL); |
| 458 | if (!e) |
| 459 | goto out_err; |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 460 | kref_get(&intf->refcount); |
| 461 | e->intf = intf; |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 462 | e->intf_num = intf->intf_num; |
| 463 | list_add_tail(&e->link, &to_deliver); |
| 464 | } |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 465 | |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 466 | /* We will succeed, so add it to the list. */ |
| 467 | list_add(&watcher->link, &smi_watchers); |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 468 | |
| 469 | mutex_unlock(&ipmi_interfaces_mutex); |
| 470 | |
| 471 | list_for_each_entry_safe(e, e2, &to_deliver, link) { |
| 472 | list_del(&e->link); |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 473 | watcher->new_smi(e->intf_num, e->intf->si_dev); |
| 474 | kref_put(&e->intf->refcount, intf_free); |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 475 | kfree(e); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 476 | } |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 477 | |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 478 | mutex_unlock(&smi_watchers_mutex); |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 479 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 480 | return 0; |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 481 | |
| 482 | out_err: |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 483 | mutex_unlock(&ipmi_interfaces_mutex); |
| 484 | mutex_unlock(&smi_watchers_mutex); |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 485 | list_for_each_entry_safe(e, e2, &to_deliver, link) { |
| 486 | list_del(&e->link); |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 487 | kref_put(&e->intf->refcount, intf_free); |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 488 | kfree(e); |
| 489 | } |
| 490 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 491 | } |
| 492 | |
| 493 | int ipmi_smi_watcher_unregister(struct ipmi_smi_watcher *watcher) |
| 494 | { |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 495 | mutex_lock(&smi_watchers_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 496 | list_del(&(watcher->link)); |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 497 | mutex_unlock(&smi_watchers_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 498 | return 0; |
| 499 | } |
| 500 | |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 501 | /* |
| 502 | * Must be called with smi_watchers_mutex held. |
| 503 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 504 | static void |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 505 | call_smi_watchers(int i, struct device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 506 | { |
| 507 | struct ipmi_smi_watcher *w; |
| 508 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 509 | list_for_each_entry(w, &smi_watchers, link) { |
| 510 | if (try_module_get(w->owner)) { |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 511 | w->new_smi(i, dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 512 | module_put(w->owner); |
| 513 | } |
| 514 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 515 | } |
| 516 | |
| 517 | static int |
| 518 | ipmi_addr_equal(struct ipmi_addr *addr1, struct ipmi_addr *addr2) |
| 519 | { |
| 520 | if (addr1->addr_type != addr2->addr_type) |
| 521 | return 0; |
| 522 | |
| 523 | if (addr1->channel != addr2->channel) |
| 524 | return 0; |
| 525 | |
| 526 | if (addr1->addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) { |
| 527 | struct ipmi_system_interface_addr *smi_addr1 |
| 528 | = (struct ipmi_system_interface_addr *) addr1; |
| 529 | struct ipmi_system_interface_addr *smi_addr2 |
| 530 | = (struct ipmi_system_interface_addr *) addr2; |
| 531 | return (smi_addr1->lun == smi_addr2->lun); |
| 532 | } |
| 533 | |
| 534 | if ((addr1->addr_type == IPMI_IPMB_ADDR_TYPE) |
| 535 | || (addr1->addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE)) |
| 536 | { |
| 537 | struct ipmi_ipmb_addr *ipmb_addr1 |
| 538 | = (struct ipmi_ipmb_addr *) addr1; |
| 539 | struct ipmi_ipmb_addr *ipmb_addr2 |
| 540 | = (struct ipmi_ipmb_addr *) addr2; |
| 541 | |
| 542 | return ((ipmb_addr1->slave_addr == ipmb_addr2->slave_addr) |
| 543 | && (ipmb_addr1->lun == ipmb_addr2->lun)); |
| 544 | } |
| 545 | |
| 546 | if (addr1->addr_type == IPMI_LAN_ADDR_TYPE) { |
| 547 | struct ipmi_lan_addr *lan_addr1 |
| 548 | = (struct ipmi_lan_addr *) addr1; |
| 549 | struct ipmi_lan_addr *lan_addr2 |
| 550 | = (struct ipmi_lan_addr *) addr2; |
| 551 | |
| 552 | return ((lan_addr1->remote_SWID == lan_addr2->remote_SWID) |
| 553 | && (lan_addr1->local_SWID == lan_addr2->local_SWID) |
| 554 | && (lan_addr1->session_handle |
| 555 | == lan_addr2->session_handle) |
| 556 | && (lan_addr1->lun == lan_addr2->lun)); |
| 557 | } |
| 558 | |
| 559 | return 1; |
| 560 | } |
| 561 | |
| 562 | int ipmi_validate_addr(struct ipmi_addr *addr, int len) |
| 563 | { |
| 564 | if (len < sizeof(struct ipmi_system_interface_addr)) { |
| 565 | return -EINVAL; |
| 566 | } |
| 567 | |
| 568 | if (addr->addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) { |
| 569 | if (addr->channel != IPMI_BMC_CHANNEL) |
| 570 | return -EINVAL; |
| 571 | return 0; |
| 572 | } |
| 573 | |
| 574 | if ((addr->channel == IPMI_BMC_CHANNEL) |
Jayachandran C | 12fc1d7 | 2006-02-03 03:04:51 -0800 | [diff] [blame] | 575 | || (addr->channel >= IPMI_MAX_CHANNELS) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 576 | || (addr->channel < 0)) |
| 577 | return -EINVAL; |
| 578 | |
| 579 | if ((addr->addr_type == IPMI_IPMB_ADDR_TYPE) |
| 580 | || (addr->addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE)) |
| 581 | { |
| 582 | if (len < sizeof(struct ipmi_ipmb_addr)) { |
| 583 | return -EINVAL; |
| 584 | } |
| 585 | return 0; |
| 586 | } |
| 587 | |
| 588 | if (addr->addr_type == IPMI_LAN_ADDR_TYPE) { |
| 589 | if (len < sizeof(struct ipmi_lan_addr)) { |
| 590 | return -EINVAL; |
| 591 | } |
| 592 | return 0; |
| 593 | } |
| 594 | |
| 595 | return -EINVAL; |
| 596 | } |
| 597 | |
| 598 | unsigned int ipmi_addr_length(int addr_type) |
| 599 | { |
| 600 | if (addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) |
| 601 | return sizeof(struct ipmi_system_interface_addr); |
| 602 | |
| 603 | if ((addr_type == IPMI_IPMB_ADDR_TYPE) |
| 604 | || (addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE)) |
| 605 | { |
| 606 | return sizeof(struct ipmi_ipmb_addr); |
| 607 | } |
| 608 | |
| 609 | if (addr_type == IPMI_LAN_ADDR_TYPE) |
| 610 | return sizeof(struct ipmi_lan_addr); |
| 611 | |
| 612 | return 0; |
| 613 | } |
| 614 | |
| 615 | static void deliver_response(struct ipmi_recv_msg *msg) |
| 616 | { |
Corey Minyard | 8a3628d | 2006-03-31 02:30:40 -0800 | [diff] [blame] | 617 | if (!msg->user) { |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 618 | ipmi_smi_t intf = msg->user_msg_data; |
| 619 | unsigned long flags; |
| 620 | |
| 621 | /* Special handling for NULL users. */ |
| 622 | if (intf->null_user_handler) { |
| 623 | intf->null_user_handler(intf, msg); |
| 624 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 625 | intf->handled_local_responses++; |
| 626 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 627 | } else { |
| 628 | /* No handler, so give up. */ |
| 629 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 630 | intf->unhandled_local_responses++; |
| 631 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 632 | } |
| 633 | ipmi_free_recv_msg(msg); |
| 634 | } else { |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 635 | ipmi_user_t user = msg->user; |
| 636 | user->handler->ipmi_recv_hndl(msg, user->handler_data); |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 637 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 638 | } |
| 639 | |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 640 | static void |
| 641 | deliver_err_response(struct ipmi_recv_msg *msg, int err) |
| 642 | { |
| 643 | msg->recv_type = IPMI_RESPONSE_RECV_TYPE; |
| 644 | msg->msg_data[0] = err; |
| 645 | msg->msg.netfn |= 1; /* Convert to a response. */ |
| 646 | msg->msg.data_len = 1; |
| 647 | msg->msg.data = msg->msg_data; |
| 648 | deliver_response(msg); |
| 649 | } |
| 650 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 651 | /* Find the next sequence number not being used and add the given |
| 652 | message with the given timeout to the sequence table. This must be |
| 653 | called with the interface's seq_lock held. */ |
| 654 | static int intf_next_seq(ipmi_smi_t intf, |
| 655 | struct ipmi_recv_msg *recv_msg, |
| 656 | unsigned long timeout, |
| 657 | int retries, |
| 658 | int broadcast, |
| 659 | unsigned char *seq, |
| 660 | long *seqid) |
| 661 | { |
| 662 | int rv = 0; |
| 663 | unsigned int i; |
| 664 | |
Corey Minyard | e8b3361 | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 665 | for (i = intf->curr_seq; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 666 | (i+1)%IPMI_IPMB_NUM_SEQ != intf->curr_seq; |
Corey Minyard | e8b3361 | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 667 | i = (i+1)%IPMI_IPMB_NUM_SEQ) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 668 | { |
Corey Minyard | 8a3628d | 2006-03-31 02:30:40 -0800 | [diff] [blame] | 669 | if (!intf->seq_table[i].inuse) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 670 | break; |
| 671 | } |
| 672 | |
Corey Minyard | 8a3628d | 2006-03-31 02:30:40 -0800 | [diff] [blame] | 673 | if (!intf->seq_table[i].inuse) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 674 | intf->seq_table[i].recv_msg = recv_msg; |
| 675 | |
| 676 | /* Start with the maximum timeout, when the send response |
| 677 | comes in we will start the real timer. */ |
| 678 | intf->seq_table[i].timeout = MAX_MSG_TIMEOUT; |
| 679 | intf->seq_table[i].orig_timeout = timeout; |
| 680 | intf->seq_table[i].retries_left = retries; |
| 681 | intf->seq_table[i].broadcast = broadcast; |
| 682 | intf->seq_table[i].inuse = 1; |
| 683 | intf->seq_table[i].seqid = NEXT_SEQID(intf->seq_table[i].seqid); |
| 684 | *seq = i; |
| 685 | *seqid = intf->seq_table[i].seqid; |
| 686 | intf->curr_seq = (i+1)%IPMI_IPMB_NUM_SEQ; |
| 687 | } else { |
| 688 | rv = -EAGAIN; |
| 689 | } |
| 690 | |
| 691 | return rv; |
| 692 | } |
| 693 | |
| 694 | /* Return the receive message for the given sequence number and |
| 695 | release the sequence number so it can be reused. Some other data |
| 696 | is passed in to be sure the message matches up correctly (to help |
| 697 | guard against message coming in after their timeout and the |
| 698 | sequence number being reused). */ |
| 699 | static int intf_find_seq(ipmi_smi_t intf, |
| 700 | unsigned char seq, |
| 701 | short channel, |
| 702 | unsigned char cmd, |
| 703 | unsigned char netfn, |
| 704 | struct ipmi_addr *addr, |
| 705 | struct ipmi_recv_msg **recv_msg) |
| 706 | { |
| 707 | int rv = -ENODEV; |
| 708 | unsigned long flags; |
| 709 | |
| 710 | if (seq >= IPMI_IPMB_NUM_SEQ) |
| 711 | return -EINVAL; |
| 712 | |
| 713 | spin_lock_irqsave(&(intf->seq_lock), flags); |
| 714 | if (intf->seq_table[seq].inuse) { |
| 715 | struct ipmi_recv_msg *msg = intf->seq_table[seq].recv_msg; |
| 716 | |
| 717 | if ((msg->addr.channel == channel) |
| 718 | && (msg->msg.cmd == cmd) |
| 719 | && (msg->msg.netfn == netfn) |
| 720 | && (ipmi_addr_equal(addr, &(msg->addr)))) |
| 721 | { |
| 722 | *recv_msg = msg; |
| 723 | intf->seq_table[seq].inuse = 0; |
| 724 | rv = 0; |
| 725 | } |
| 726 | } |
| 727 | spin_unlock_irqrestore(&(intf->seq_lock), flags); |
| 728 | |
| 729 | return rv; |
| 730 | } |
| 731 | |
| 732 | |
| 733 | /* Start the timer for a specific sequence table entry. */ |
| 734 | static int intf_start_seq_timer(ipmi_smi_t intf, |
| 735 | long msgid) |
| 736 | { |
| 737 | int rv = -ENODEV; |
| 738 | unsigned long flags; |
| 739 | unsigned char seq; |
| 740 | unsigned long seqid; |
| 741 | |
| 742 | |
| 743 | GET_SEQ_FROM_MSGID(msgid, seq, seqid); |
| 744 | |
| 745 | spin_lock_irqsave(&(intf->seq_lock), flags); |
| 746 | /* We do this verification because the user can be deleted |
| 747 | while a message is outstanding. */ |
| 748 | if ((intf->seq_table[seq].inuse) |
| 749 | && (intf->seq_table[seq].seqid == seqid)) |
| 750 | { |
| 751 | struct seq_table *ent = &(intf->seq_table[seq]); |
| 752 | ent->timeout = ent->orig_timeout; |
| 753 | rv = 0; |
| 754 | } |
| 755 | spin_unlock_irqrestore(&(intf->seq_lock), flags); |
| 756 | |
| 757 | return rv; |
| 758 | } |
| 759 | |
| 760 | /* Got an error for the send message for a specific sequence number. */ |
| 761 | static int intf_err_seq(ipmi_smi_t intf, |
| 762 | long msgid, |
| 763 | unsigned int err) |
| 764 | { |
| 765 | int rv = -ENODEV; |
| 766 | unsigned long flags; |
| 767 | unsigned char seq; |
| 768 | unsigned long seqid; |
| 769 | struct ipmi_recv_msg *msg = NULL; |
| 770 | |
| 771 | |
| 772 | GET_SEQ_FROM_MSGID(msgid, seq, seqid); |
| 773 | |
| 774 | spin_lock_irqsave(&(intf->seq_lock), flags); |
| 775 | /* We do this verification because the user can be deleted |
| 776 | while a message is outstanding. */ |
| 777 | if ((intf->seq_table[seq].inuse) |
| 778 | && (intf->seq_table[seq].seqid == seqid)) |
| 779 | { |
| 780 | struct seq_table *ent = &(intf->seq_table[seq]); |
| 781 | |
| 782 | ent->inuse = 0; |
| 783 | msg = ent->recv_msg; |
| 784 | rv = 0; |
| 785 | } |
| 786 | spin_unlock_irqrestore(&(intf->seq_lock), flags); |
| 787 | |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 788 | if (msg) |
| 789 | deliver_err_response(msg, err); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 790 | |
| 791 | return rv; |
| 792 | } |
| 793 | |
| 794 | |
| 795 | int ipmi_create_user(unsigned int if_num, |
| 796 | struct ipmi_user_hndl *handler, |
| 797 | void *handler_data, |
| 798 | ipmi_user_t *user) |
| 799 | { |
| 800 | unsigned long flags; |
| 801 | ipmi_user_t new_user; |
| 802 | int rv = 0; |
| 803 | ipmi_smi_t intf; |
| 804 | |
| 805 | /* There is no module usecount here, because it's not |
| 806 | required. Since this can only be used by and called from |
| 807 | other modules, they will implicitly use this module, and |
| 808 | thus this can't be removed unless the other modules are |
| 809 | removed. */ |
| 810 | |
| 811 | if (handler == NULL) |
| 812 | return -EINVAL; |
| 813 | |
| 814 | /* Make sure the driver is actually initialized, this handles |
| 815 | problems with initialization order. */ |
| 816 | if (!initialized) { |
| 817 | rv = ipmi_init_msghandler(); |
| 818 | if (rv) |
| 819 | return rv; |
| 820 | |
| 821 | /* The init code doesn't return an error if it was turned |
| 822 | off, but it won't initialize. Check that. */ |
| 823 | if (!initialized) |
| 824 | return -ENODEV; |
| 825 | } |
| 826 | |
| 827 | new_user = kmalloc(sizeof(*new_user), GFP_KERNEL); |
Corey Minyard | 8a3628d | 2006-03-31 02:30:40 -0800 | [diff] [blame] | 828 | if (!new_user) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 829 | return -ENOMEM; |
| 830 | |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 831 | mutex_lock(&ipmi_interfaces_mutex); |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 832 | list_for_each_entry_rcu(intf, &ipmi_interfaces, link) { |
| 833 | if (intf->intf_num == if_num) |
| 834 | goto found; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 835 | } |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 836 | /* Not found, return an error */ |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 837 | rv = -EINVAL; |
| 838 | goto out_kfree; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 839 | |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 840 | found: |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 841 | /* Note that each existing user holds a refcount to the interface. */ |
| 842 | kref_get(&intf->refcount); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 843 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 844 | kref_init(&new_user->refcount); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 845 | new_user->handler = handler; |
| 846 | new_user->handler_data = handler_data; |
| 847 | new_user->intf = intf; |
| 848 | new_user->gets_events = 0; |
| 849 | |
| 850 | if (!try_module_get(intf->handlers->owner)) { |
| 851 | rv = -ENODEV; |
Adrian Bunk | 5c98d29 | 2006-03-25 03:07:52 -0800 | [diff] [blame] | 852 | goto out_kref; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 853 | } |
| 854 | |
| 855 | if (intf->handlers->inc_usecount) { |
| 856 | rv = intf->handlers->inc_usecount(intf->send_info); |
| 857 | if (rv) { |
| 858 | module_put(intf->handlers->owner); |
Adrian Bunk | 5c98d29 | 2006-03-25 03:07:52 -0800 | [diff] [blame] | 859 | goto out_kref; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 860 | } |
| 861 | } |
| 862 | |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 863 | /* Hold the lock so intf->handlers is guaranteed to be good |
| 864 | * until now */ |
| 865 | mutex_unlock(&ipmi_interfaces_mutex); |
| 866 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 867 | new_user->valid = 1; |
| 868 | spin_lock_irqsave(&intf->seq_lock, flags); |
| 869 | list_add_rcu(&new_user->link, &intf->users); |
| 870 | spin_unlock_irqrestore(&intf->seq_lock, flags); |
| 871 | *user = new_user; |
| 872 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 873 | |
Adrian Bunk | 5c98d29 | 2006-03-25 03:07:52 -0800 | [diff] [blame] | 874 | out_kref: |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 875 | kref_put(&intf->refcount, intf_free); |
Adrian Bunk | 5c98d29 | 2006-03-25 03:07:52 -0800 | [diff] [blame] | 876 | out_kfree: |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 877 | mutex_unlock(&ipmi_interfaces_mutex); |
Adrian Bunk | 5c98d29 | 2006-03-25 03:07:52 -0800 | [diff] [blame] | 878 | kfree(new_user); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 879 | return rv; |
| 880 | } |
| 881 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 882 | static void free_user(struct kref *ref) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 883 | { |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 884 | ipmi_user_t user = container_of(ref, struct ipmi_user, refcount); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 885 | kfree(user); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 886 | } |
| 887 | |
| 888 | int ipmi_destroy_user(ipmi_user_t user) |
| 889 | { |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 890 | ipmi_smi_t intf = user->intf; |
| 891 | int i; |
| 892 | unsigned long flags; |
| 893 | struct cmd_rcvr *rcvr; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 894 | struct cmd_rcvr *rcvrs = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 895 | |
Corey Minyard | 8a3628d | 2006-03-31 02:30:40 -0800 | [diff] [blame] | 896 | user->valid = 0; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 897 | |
| 898 | /* Remove the user from the interface's sequence table. */ |
| 899 | spin_lock_irqsave(&intf->seq_lock, flags); |
| 900 | list_del_rcu(&user->link); |
| 901 | |
| 902 | for (i = 0; i < IPMI_IPMB_NUM_SEQ; i++) { |
| 903 | if (intf->seq_table[i].inuse |
| 904 | && (intf->seq_table[i].recv_msg->user == user)) |
| 905 | { |
| 906 | intf->seq_table[i].inuse = 0; |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 907 | ipmi_free_recv_msg(intf->seq_table[i].recv_msg); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 908 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 909 | } |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 910 | spin_unlock_irqrestore(&intf->seq_lock, flags); |
| 911 | |
| 912 | /* |
| 913 | * Remove the user from the command receiver's table. First |
| 914 | * we build a list of everything (not using the standard link, |
| 915 | * since other things may be using it till we do |
| 916 | * synchronize_rcu()) then free everything in that list. |
| 917 | */ |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 918 | mutex_lock(&intf->cmd_rcvrs_mutex); |
Paul E. McKenney | 066bb8d | 2006-01-06 00:19:53 -0800 | [diff] [blame] | 919 | list_for_each_entry_rcu(rcvr, &intf->cmd_rcvrs, link) { |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 920 | if (rcvr->user == user) { |
| 921 | list_del_rcu(&rcvr->link); |
| 922 | rcvr->next = rcvrs; |
| 923 | rcvrs = rcvr; |
| 924 | } |
| 925 | } |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 926 | mutex_unlock(&intf->cmd_rcvrs_mutex); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 927 | synchronize_rcu(); |
| 928 | while (rcvrs) { |
| 929 | rcvr = rcvrs; |
| 930 | rcvrs = rcvr->next; |
| 931 | kfree(rcvr); |
| 932 | } |
| 933 | |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 934 | mutex_lock(&ipmi_interfaces_mutex); |
| 935 | if (intf->handlers) { |
| 936 | module_put(intf->handlers->owner); |
| 937 | if (intf->handlers->dec_usecount) |
| 938 | intf->handlers->dec_usecount(intf->send_info); |
| 939 | } |
| 940 | mutex_unlock(&ipmi_interfaces_mutex); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 941 | |
| 942 | kref_put(&intf->refcount, intf_free); |
| 943 | |
| 944 | kref_put(&user->refcount, free_user); |
| 945 | |
Corey Minyard | 8a3628d | 2006-03-31 02:30:40 -0800 | [diff] [blame] | 946 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 947 | } |
| 948 | |
| 949 | void ipmi_get_version(ipmi_user_t user, |
| 950 | unsigned char *major, |
| 951 | unsigned char *minor) |
| 952 | { |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 953 | *major = user->intf->ipmi_version_major; |
| 954 | *minor = user->intf->ipmi_version_minor; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 955 | } |
| 956 | |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 957 | int ipmi_set_my_address(ipmi_user_t user, |
| 958 | unsigned int channel, |
| 959 | unsigned char address) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 960 | { |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 961 | if (channel >= IPMI_MAX_CHANNELS) |
| 962 | return -EINVAL; |
| 963 | user->intf->channels[channel].address = address; |
| 964 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 965 | } |
| 966 | |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 967 | int ipmi_get_my_address(ipmi_user_t user, |
| 968 | unsigned int channel, |
| 969 | unsigned char *address) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 970 | { |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 971 | if (channel >= IPMI_MAX_CHANNELS) |
| 972 | return -EINVAL; |
| 973 | *address = user->intf->channels[channel].address; |
| 974 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 975 | } |
| 976 | |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 977 | int ipmi_set_my_LUN(ipmi_user_t user, |
| 978 | unsigned int channel, |
| 979 | unsigned char LUN) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 980 | { |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 981 | if (channel >= IPMI_MAX_CHANNELS) |
| 982 | return -EINVAL; |
| 983 | user->intf->channels[channel].lun = LUN & 0x3; |
| 984 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 985 | } |
| 986 | |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 987 | int ipmi_get_my_LUN(ipmi_user_t user, |
| 988 | unsigned int channel, |
| 989 | unsigned char *address) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 990 | { |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 991 | if (channel >= IPMI_MAX_CHANNELS) |
| 992 | return -EINVAL; |
| 993 | *address = user->intf->channels[channel].lun; |
| 994 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 995 | } |
| 996 | |
Corey Minyard | b967513 | 2006-12-06 20:41:02 -0800 | [diff] [blame] | 997 | int ipmi_get_maintenance_mode(ipmi_user_t user) |
| 998 | { |
| 999 | int mode; |
| 1000 | unsigned long flags; |
| 1001 | |
| 1002 | spin_lock_irqsave(&user->intf->maintenance_mode_lock, flags); |
| 1003 | mode = user->intf->maintenance_mode; |
| 1004 | spin_unlock_irqrestore(&user->intf->maintenance_mode_lock, flags); |
| 1005 | |
| 1006 | return mode; |
| 1007 | } |
| 1008 | EXPORT_SYMBOL(ipmi_get_maintenance_mode); |
| 1009 | |
| 1010 | static void maintenance_mode_update(ipmi_smi_t intf) |
| 1011 | { |
| 1012 | if (intf->handlers->set_maintenance_mode) |
| 1013 | intf->handlers->set_maintenance_mode( |
| 1014 | intf->send_info, intf->maintenance_mode_enable); |
| 1015 | } |
| 1016 | |
| 1017 | int ipmi_set_maintenance_mode(ipmi_user_t user, int mode) |
| 1018 | { |
| 1019 | int rv = 0; |
| 1020 | unsigned long flags; |
| 1021 | ipmi_smi_t intf = user->intf; |
| 1022 | |
| 1023 | spin_lock_irqsave(&intf->maintenance_mode_lock, flags); |
| 1024 | if (intf->maintenance_mode != mode) { |
| 1025 | switch (mode) { |
| 1026 | case IPMI_MAINTENANCE_MODE_AUTO: |
| 1027 | intf->maintenance_mode = mode; |
| 1028 | intf->maintenance_mode_enable |
| 1029 | = (intf->auto_maintenance_timeout > 0); |
| 1030 | break; |
| 1031 | |
| 1032 | case IPMI_MAINTENANCE_MODE_OFF: |
| 1033 | intf->maintenance_mode = mode; |
| 1034 | intf->maintenance_mode_enable = 0; |
| 1035 | break; |
| 1036 | |
| 1037 | case IPMI_MAINTENANCE_MODE_ON: |
| 1038 | intf->maintenance_mode = mode; |
| 1039 | intf->maintenance_mode_enable = 1; |
| 1040 | break; |
| 1041 | |
| 1042 | default: |
| 1043 | rv = -EINVAL; |
| 1044 | goto out_unlock; |
| 1045 | } |
| 1046 | |
| 1047 | maintenance_mode_update(intf); |
| 1048 | } |
| 1049 | out_unlock: |
| 1050 | spin_unlock_irqrestore(&intf->maintenance_mode_lock, flags); |
| 1051 | |
| 1052 | return rv; |
| 1053 | } |
| 1054 | EXPORT_SYMBOL(ipmi_set_maintenance_mode); |
| 1055 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1056 | int ipmi_set_gets_events(ipmi_user_t user, int val) |
| 1057 | { |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 1058 | unsigned long flags; |
| 1059 | ipmi_smi_t intf = user->intf; |
| 1060 | struct ipmi_recv_msg *msg, *msg2; |
| 1061 | struct list_head msgs; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1062 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 1063 | INIT_LIST_HEAD(&msgs); |
| 1064 | |
| 1065 | spin_lock_irqsave(&intf->events_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1066 | user->gets_events = val; |
| 1067 | |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 1068 | if (intf->delivering_events) |
| 1069 | /* |
| 1070 | * Another thread is delivering events for this, so |
| 1071 | * let it handle any new events. |
| 1072 | */ |
| 1073 | goto out; |
| 1074 | |
| 1075 | /* Deliver any queued events. */ |
| 1076 | while (user->gets_events && !list_empty(&intf->waiting_events)) { |
Akinobu Mita | 179e091 | 2006-06-26 00:24:41 -0700 | [diff] [blame] | 1077 | list_for_each_entry_safe(msg, msg2, &intf->waiting_events, link) |
| 1078 | list_move_tail(&msg->link, &msgs); |
Corey Minyard | 4791c03 | 2006-04-10 22:54:31 -0700 | [diff] [blame] | 1079 | intf->waiting_events_count = 0; |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 1080 | |
| 1081 | intf->delivering_events = 1; |
| 1082 | spin_unlock_irqrestore(&intf->events_lock, flags); |
| 1083 | |
| 1084 | list_for_each_entry_safe(msg, msg2, &msgs, link) { |
| 1085 | msg->user = user; |
| 1086 | kref_get(&user->refcount); |
| 1087 | deliver_response(msg); |
| 1088 | } |
| 1089 | |
| 1090 | spin_lock_irqsave(&intf->events_lock, flags); |
| 1091 | intf->delivering_events = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1092 | } |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 1093 | |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 1094 | out: |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 1095 | spin_unlock_irqrestore(&intf->events_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1096 | |
| 1097 | return 0; |
| 1098 | } |
| 1099 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 1100 | static struct cmd_rcvr *find_cmd_rcvr(ipmi_smi_t intf, |
| 1101 | unsigned char netfn, |
Corey Minyard | c69c312 | 2006-09-30 23:27:56 -0700 | [diff] [blame] | 1102 | unsigned char cmd, |
| 1103 | unsigned char chan) |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 1104 | { |
| 1105 | struct cmd_rcvr *rcvr; |
| 1106 | |
| 1107 | list_for_each_entry_rcu(rcvr, &intf->cmd_rcvrs, link) { |
Corey Minyard | c69c312 | 2006-09-30 23:27:56 -0700 | [diff] [blame] | 1108 | if ((rcvr->netfn == netfn) && (rcvr->cmd == cmd) |
| 1109 | && (rcvr->chans & (1 << chan))) |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 1110 | return rcvr; |
| 1111 | } |
| 1112 | return NULL; |
| 1113 | } |
| 1114 | |
Corey Minyard | c69c312 | 2006-09-30 23:27:56 -0700 | [diff] [blame] | 1115 | static int is_cmd_rcvr_exclusive(ipmi_smi_t intf, |
| 1116 | unsigned char netfn, |
| 1117 | unsigned char cmd, |
| 1118 | unsigned int chans) |
| 1119 | { |
| 1120 | struct cmd_rcvr *rcvr; |
| 1121 | |
| 1122 | list_for_each_entry_rcu(rcvr, &intf->cmd_rcvrs, link) { |
| 1123 | if ((rcvr->netfn == netfn) && (rcvr->cmd == cmd) |
| 1124 | && (rcvr->chans & chans)) |
| 1125 | return 0; |
| 1126 | } |
| 1127 | return 1; |
| 1128 | } |
| 1129 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1130 | int ipmi_register_for_cmd(ipmi_user_t user, |
| 1131 | unsigned char netfn, |
Corey Minyard | c69c312 | 2006-09-30 23:27:56 -0700 | [diff] [blame] | 1132 | unsigned char cmd, |
| 1133 | unsigned int chans) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1134 | { |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 1135 | ipmi_smi_t intf = user->intf; |
| 1136 | struct cmd_rcvr *rcvr; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 1137 | int rv = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1138 | |
| 1139 | |
| 1140 | rcvr = kmalloc(sizeof(*rcvr), GFP_KERNEL); |
Corey Minyard | 8a3628d | 2006-03-31 02:30:40 -0800 | [diff] [blame] | 1141 | if (!rcvr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1142 | return -ENOMEM; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 1143 | rcvr->cmd = cmd; |
| 1144 | rcvr->netfn = netfn; |
Corey Minyard | c69c312 | 2006-09-30 23:27:56 -0700 | [diff] [blame] | 1145 | rcvr->chans = chans; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 1146 | rcvr->user = user; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1147 | |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 1148 | mutex_lock(&intf->cmd_rcvrs_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1149 | /* Make sure the command/netfn is not already registered. */ |
Corey Minyard | c69c312 | 2006-09-30 23:27:56 -0700 | [diff] [blame] | 1150 | if (!is_cmd_rcvr_exclusive(intf, netfn, cmd, chans)) { |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 1151 | rv = -EBUSY; |
| 1152 | goto out_unlock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1153 | } |
| 1154 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 1155 | list_add_rcu(&rcvr->link, &intf->cmd_rcvrs); |
Corey Minyard | 877197e | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 1156 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 1157 | out_unlock: |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 1158 | mutex_unlock(&intf->cmd_rcvrs_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1159 | if (rv) |
| 1160 | kfree(rcvr); |
| 1161 | |
| 1162 | return rv; |
| 1163 | } |
| 1164 | |
| 1165 | int ipmi_unregister_for_cmd(ipmi_user_t user, |
| 1166 | unsigned char netfn, |
Corey Minyard | c69c312 | 2006-09-30 23:27:56 -0700 | [diff] [blame] | 1167 | unsigned char cmd, |
| 1168 | unsigned int chans) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1169 | { |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 1170 | ipmi_smi_t intf = user->intf; |
| 1171 | struct cmd_rcvr *rcvr; |
Corey Minyard | c69c312 | 2006-09-30 23:27:56 -0700 | [diff] [blame] | 1172 | struct cmd_rcvr *rcvrs = NULL; |
| 1173 | int i, rv = -ENOENT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1174 | |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 1175 | mutex_lock(&intf->cmd_rcvrs_mutex); |
Corey Minyard | c69c312 | 2006-09-30 23:27:56 -0700 | [diff] [blame] | 1176 | for (i = 0; i < IPMI_NUM_CHANNELS; i++) { |
| 1177 | if (((1 << i) & chans) == 0) |
| 1178 | continue; |
| 1179 | rcvr = find_cmd_rcvr(intf, netfn, cmd, i); |
| 1180 | if (rcvr == NULL) |
| 1181 | continue; |
| 1182 | if (rcvr->user == user) { |
| 1183 | rv = 0; |
| 1184 | rcvr->chans &= ~chans; |
| 1185 | if (rcvr->chans == 0) { |
| 1186 | list_del_rcu(&rcvr->link); |
| 1187 | rcvr->next = rcvrs; |
| 1188 | rcvrs = rcvr; |
| 1189 | } |
| 1190 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1191 | } |
Corey Minyard | c69c312 | 2006-09-30 23:27:56 -0700 | [diff] [blame] | 1192 | mutex_unlock(&intf->cmd_rcvrs_mutex); |
| 1193 | synchronize_rcu(); |
| 1194 | while (rcvrs) { |
| 1195 | rcvr = rcvrs; |
| 1196 | rcvrs = rcvr->next; |
| 1197 | kfree(rcvr); |
| 1198 | } |
| 1199 | return rv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1200 | } |
| 1201 | |
| 1202 | void ipmi_user_set_run_to_completion(ipmi_user_t user, int val) |
| 1203 | { |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 1204 | ipmi_smi_t intf = user->intf; |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 1205 | if (intf->handlers) |
| 1206 | intf->handlers->set_run_to_completion(intf->send_info, val); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1207 | } |
| 1208 | |
| 1209 | static unsigned char |
| 1210 | ipmb_checksum(unsigned char *data, int size) |
| 1211 | { |
| 1212 | unsigned char csum = 0; |
| 1213 | |
| 1214 | for (; size > 0; size--, data++) |
| 1215 | csum += *data; |
| 1216 | |
| 1217 | return -csum; |
| 1218 | } |
| 1219 | |
| 1220 | static inline void format_ipmb_msg(struct ipmi_smi_msg *smi_msg, |
| 1221 | struct kernel_ipmi_msg *msg, |
| 1222 | struct ipmi_ipmb_addr *ipmb_addr, |
| 1223 | long msgid, |
| 1224 | unsigned char ipmb_seq, |
| 1225 | int broadcast, |
| 1226 | unsigned char source_address, |
| 1227 | unsigned char source_lun) |
| 1228 | { |
| 1229 | int i = broadcast; |
| 1230 | |
| 1231 | /* Format the IPMB header data. */ |
| 1232 | smi_msg->data[0] = (IPMI_NETFN_APP_REQUEST << 2); |
| 1233 | smi_msg->data[1] = IPMI_SEND_MSG_CMD; |
| 1234 | smi_msg->data[2] = ipmb_addr->channel; |
| 1235 | if (broadcast) |
| 1236 | smi_msg->data[3] = 0; |
| 1237 | smi_msg->data[i+3] = ipmb_addr->slave_addr; |
| 1238 | smi_msg->data[i+4] = (msg->netfn << 2) | (ipmb_addr->lun & 0x3); |
| 1239 | smi_msg->data[i+5] = ipmb_checksum(&(smi_msg->data[i+3]), 2); |
| 1240 | smi_msg->data[i+6] = source_address; |
| 1241 | smi_msg->data[i+7] = (ipmb_seq << 2) | source_lun; |
| 1242 | smi_msg->data[i+8] = msg->cmd; |
| 1243 | |
| 1244 | /* Now tack on the data to the message. */ |
| 1245 | if (msg->data_len > 0) |
| 1246 | memcpy(&(smi_msg->data[i+9]), msg->data, |
| 1247 | msg->data_len); |
| 1248 | smi_msg->data_size = msg->data_len + 9; |
| 1249 | |
| 1250 | /* Now calculate the checksum and tack it on. */ |
| 1251 | smi_msg->data[i+smi_msg->data_size] |
| 1252 | = ipmb_checksum(&(smi_msg->data[i+6]), |
| 1253 | smi_msg->data_size-6); |
| 1254 | |
| 1255 | /* Add on the checksum size and the offset from the |
| 1256 | broadcast. */ |
| 1257 | smi_msg->data_size += 1 + i; |
| 1258 | |
| 1259 | smi_msg->msgid = msgid; |
| 1260 | } |
| 1261 | |
| 1262 | static inline void format_lan_msg(struct ipmi_smi_msg *smi_msg, |
| 1263 | struct kernel_ipmi_msg *msg, |
| 1264 | struct ipmi_lan_addr *lan_addr, |
| 1265 | long msgid, |
| 1266 | unsigned char ipmb_seq, |
| 1267 | unsigned char source_lun) |
| 1268 | { |
| 1269 | /* Format the IPMB header data. */ |
| 1270 | smi_msg->data[0] = (IPMI_NETFN_APP_REQUEST << 2); |
| 1271 | smi_msg->data[1] = IPMI_SEND_MSG_CMD; |
| 1272 | smi_msg->data[2] = lan_addr->channel; |
| 1273 | smi_msg->data[3] = lan_addr->session_handle; |
| 1274 | smi_msg->data[4] = lan_addr->remote_SWID; |
| 1275 | smi_msg->data[5] = (msg->netfn << 2) | (lan_addr->lun & 0x3); |
| 1276 | smi_msg->data[6] = ipmb_checksum(&(smi_msg->data[4]), 2); |
| 1277 | smi_msg->data[7] = lan_addr->local_SWID; |
| 1278 | smi_msg->data[8] = (ipmb_seq << 2) | source_lun; |
| 1279 | smi_msg->data[9] = msg->cmd; |
| 1280 | |
| 1281 | /* Now tack on the data to the message. */ |
| 1282 | if (msg->data_len > 0) |
| 1283 | memcpy(&(smi_msg->data[10]), msg->data, |
| 1284 | msg->data_len); |
| 1285 | smi_msg->data_size = msg->data_len + 10; |
| 1286 | |
| 1287 | /* Now calculate the checksum and tack it on. */ |
| 1288 | smi_msg->data[smi_msg->data_size] |
| 1289 | = ipmb_checksum(&(smi_msg->data[7]), |
| 1290 | smi_msg->data_size-7); |
| 1291 | |
| 1292 | /* Add on the checksum size and the offset from the |
| 1293 | broadcast. */ |
| 1294 | smi_msg->data_size += 1; |
| 1295 | |
| 1296 | smi_msg->msgid = msgid; |
| 1297 | } |
| 1298 | |
| 1299 | /* Separate from ipmi_request so that the user does not have to be |
| 1300 | supplied in certain circumstances (mainly at panic time). If |
| 1301 | messages are supplied, they will be freed, even if an error |
| 1302 | occurs. */ |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 1303 | static int i_ipmi_request(ipmi_user_t user, |
| 1304 | ipmi_smi_t intf, |
| 1305 | struct ipmi_addr *addr, |
| 1306 | long msgid, |
| 1307 | struct kernel_ipmi_msg *msg, |
| 1308 | void *user_msg_data, |
| 1309 | void *supplied_smi, |
| 1310 | struct ipmi_recv_msg *supplied_recv, |
| 1311 | int priority, |
| 1312 | unsigned char source_address, |
| 1313 | unsigned char source_lun, |
| 1314 | int retries, |
| 1315 | unsigned int retry_time_ms) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1316 | { |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 1317 | int rv = 0; |
| 1318 | struct ipmi_smi_msg *smi_msg; |
| 1319 | struct ipmi_recv_msg *recv_msg; |
| 1320 | unsigned long flags; |
| 1321 | struct ipmi_smi_handlers *handlers; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1322 | |
| 1323 | |
| 1324 | if (supplied_recv) { |
| 1325 | recv_msg = supplied_recv; |
| 1326 | } else { |
| 1327 | recv_msg = ipmi_alloc_recv_msg(); |
| 1328 | if (recv_msg == NULL) { |
| 1329 | return -ENOMEM; |
| 1330 | } |
| 1331 | } |
| 1332 | recv_msg->user_msg_data = user_msg_data; |
| 1333 | |
| 1334 | if (supplied_smi) { |
| 1335 | smi_msg = (struct ipmi_smi_msg *) supplied_smi; |
| 1336 | } else { |
| 1337 | smi_msg = ipmi_alloc_smi_msg(); |
| 1338 | if (smi_msg == NULL) { |
| 1339 | ipmi_free_recv_msg(recv_msg); |
| 1340 | return -ENOMEM; |
| 1341 | } |
| 1342 | } |
| 1343 | |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 1344 | rcu_read_lock(); |
| 1345 | handlers = intf->handlers; |
| 1346 | if (!handlers) { |
| 1347 | rv = -ENODEV; |
| 1348 | goto out_err; |
| 1349 | } |
| 1350 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1351 | recv_msg->user = user; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 1352 | if (user) |
| 1353 | kref_get(&user->refcount); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1354 | recv_msg->msgid = msgid; |
| 1355 | /* Store the message to send in the receive message so timeout |
| 1356 | responses can get the proper response data. */ |
| 1357 | recv_msg->msg = *msg; |
| 1358 | |
| 1359 | if (addr->addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) { |
| 1360 | struct ipmi_system_interface_addr *smi_addr; |
| 1361 | |
| 1362 | if (msg->netfn & 1) { |
| 1363 | /* Responses are not allowed to the SMI. */ |
| 1364 | rv = -EINVAL; |
| 1365 | goto out_err; |
| 1366 | } |
| 1367 | |
| 1368 | smi_addr = (struct ipmi_system_interface_addr *) addr; |
| 1369 | if (smi_addr->lun > 3) { |
| 1370 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 1371 | intf->sent_invalid_commands++; |
| 1372 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 1373 | rv = -EINVAL; |
| 1374 | goto out_err; |
| 1375 | } |
| 1376 | |
| 1377 | memcpy(&recv_msg->addr, smi_addr, sizeof(*smi_addr)); |
| 1378 | |
| 1379 | if ((msg->netfn == IPMI_NETFN_APP_REQUEST) |
| 1380 | && ((msg->cmd == IPMI_SEND_MSG_CMD) |
| 1381 | || (msg->cmd == IPMI_GET_MSG_CMD) |
| 1382 | || (msg->cmd == IPMI_READ_EVENT_MSG_BUFFER_CMD))) |
| 1383 | { |
| 1384 | /* We don't let the user do these, since we manage |
| 1385 | the sequence numbers. */ |
| 1386 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 1387 | intf->sent_invalid_commands++; |
| 1388 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 1389 | rv = -EINVAL; |
| 1390 | goto out_err; |
| 1391 | } |
| 1392 | |
Corey Minyard | b967513 | 2006-12-06 20:41:02 -0800 | [diff] [blame] | 1393 | if (((msg->netfn == IPMI_NETFN_APP_REQUEST) |
| 1394 | && ((msg->cmd == IPMI_COLD_RESET_CMD) |
| 1395 | || (msg->cmd == IPMI_WARM_RESET_CMD))) |
| 1396 | || (msg->netfn == IPMI_NETFN_FIRMWARE_REQUEST)) |
| 1397 | { |
| 1398 | spin_lock_irqsave(&intf->maintenance_mode_lock, flags); |
| 1399 | intf->auto_maintenance_timeout |
| 1400 | = IPMI_MAINTENANCE_MODE_TIMEOUT; |
| 1401 | if (!intf->maintenance_mode |
| 1402 | && !intf->maintenance_mode_enable) |
| 1403 | { |
| 1404 | intf->maintenance_mode_enable = 1; |
| 1405 | maintenance_mode_update(intf); |
| 1406 | } |
| 1407 | spin_unlock_irqrestore(&intf->maintenance_mode_lock, |
| 1408 | flags); |
| 1409 | } |
| 1410 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1411 | if ((msg->data_len + 2) > IPMI_MAX_MSG_LENGTH) { |
| 1412 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 1413 | intf->sent_invalid_commands++; |
| 1414 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 1415 | rv = -EMSGSIZE; |
| 1416 | goto out_err; |
| 1417 | } |
| 1418 | |
| 1419 | smi_msg->data[0] = (msg->netfn << 2) | (smi_addr->lun & 0x3); |
| 1420 | smi_msg->data[1] = msg->cmd; |
| 1421 | smi_msg->msgid = msgid; |
| 1422 | smi_msg->user_data = recv_msg; |
| 1423 | if (msg->data_len > 0) |
| 1424 | memcpy(&(smi_msg->data[2]), msg->data, msg->data_len); |
| 1425 | smi_msg->data_size = msg->data_len + 2; |
| 1426 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 1427 | intf->sent_local_commands++; |
| 1428 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 1429 | } else if ((addr->addr_type == IPMI_IPMB_ADDR_TYPE) |
| 1430 | || (addr->addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE)) |
| 1431 | { |
| 1432 | struct ipmi_ipmb_addr *ipmb_addr; |
| 1433 | unsigned char ipmb_seq; |
| 1434 | long seqid; |
| 1435 | int broadcast = 0; |
| 1436 | |
KAMBAROV, ZAUR | 9c101fd | 2005-06-28 20:45:08 -0700 | [diff] [blame] | 1437 | if (addr->channel >= IPMI_MAX_CHANNELS) { |
| 1438 | spin_lock_irqsave(&intf->counter_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1439 | intf->sent_invalid_commands++; |
| 1440 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 1441 | rv = -EINVAL; |
| 1442 | goto out_err; |
| 1443 | } |
| 1444 | |
| 1445 | if (intf->channels[addr->channel].medium |
| 1446 | != IPMI_CHANNEL_MEDIUM_IPMB) |
| 1447 | { |
| 1448 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 1449 | intf->sent_invalid_commands++; |
| 1450 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 1451 | rv = -EINVAL; |
| 1452 | goto out_err; |
| 1453 | } |
| 1454 | |
| 1455 | if (retries < 0) { |
| 1456 | if (addr->addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE) |
| 1457 | retries = 0; /* Don't retry broadcasts. */ |
| 1458 | else |
| 1459 | retries = 4; |
| 1460 | } |
| 1461 | if (addr->addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE) { |
| 1462 | /* Broadcasts add a zero at the beginning of the |
| 1463 | message, but otherwise is the same as an IPMB |
| 1464 | address. */ |
| 1465 | addr->addr_type = IPMI_IPMB_ADDR_TYPE; |
| 1466 | broadcast = 1; |
| 1467 | } |
| 1468 | |
| 1469 | |
| 1470 | /* Default to 1 second retries. */ |
| 1471 | if (retry_time_ms == 0) |
| 1472 | retry_time_ms = 1000; |
| 1473 | |
| 1474 | /* 9 for the header and 1 for the checksum, plus |
| 1475 | possibly one for the broadcast. */ |
| 1476 | if ((msg->data_len + 10 + broadcast) > IPMI_MAX_MSG_LENGTH) { |
| 1477 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 1478 | intf->sent_invalid_commands++; |
| 1479 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 1480 | rv = -EMSGSIZE; |
| 1481 | goto out_err; |
| 1482 | } |
| 1483 | |
| 1484 | ipmb_addr = (struct ipmi_ipmb_addr *) addr; |
| 1485 | if (ipmb_addr->lun > 3) { |
| 1486 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 1487 | intf->sent_invalid_commands++; |
| 1488 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 1489 | rv = -EINVAL; |
| 1490 | goto out_err; |
| 1491 | } |
| 1492 | |
| 1493 | memcpy(&recv_msg->addr, ipmb_addr, sizeof(*ipmb_addr)); |
| 1494 | |
| 1495 | if (recv_msg->msg.netfn & 0x1) { |
| 1496 | /* It's a response, so use the user's sequence |
| 1497 | from msgid. */ |
| 1498 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 1499 | intf->sent_ipmb_responses++; |
| 1500 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 1501 | format_ipmb_msg(smi_msg, msg, ipmb_addr, msgid, |
| 1502 | msgid, broadcast, |
| 1503 | source_address, source_lun); |
| 1504 | |
| 1505 | /* Save the receive message so we can use it |
| 1506 | to deliver the response. */ |
| 1507 | smi_msg->user_data = recv_msg; |
| 1508 | } else { |
| 1509 | /* It's a command, so get a sequence for it. */ |
| 1510 | |
| 1511 | spin_lock_irqsave(&(intf->seq_lock), flags); |
| 1512 | |
| 1513 | spin_lock(&intf->counter_lock); |
| 1514 | intf->sent_ipmb_commands++; |
| 1515 | spin_unlock(&intf->counter_lock); |
| 1516 | |
| 1517 | /* Create a sequence number with a 1 second |
| 1518 | timeout and 4 retries. */ |
| 1519 | rv = intf_next_seq(intf, |
| 1520 | recv_msg, |
| 1521 | retry_time_ms, |
| 1522 | retries, |
| 1523 | broadcast, |
| 1524 | &ipmb_seq, |
| 1525 | &seqid); |
| 1526 | if (rv) { |
| 1527 | /* We have used up all the sequence numbers, |
| 1528 | probably, so abort. */ |
| 1529 | spin_unlock_irqrestore(&(intf->seq_lock), |
| 1530 | flags); |
| 1531 | goto out_err; |
| 1532 | } |
| 1533 | |
| 1534 | /* Store the sequence number in the message, |
| 1535 | so that when the send message response |
| 1536 | comes back we can start the timer. */ |
| 1537 | format_ipmb_msg(smi_msg, msg, ipmb_addr, |
| 1538 | STORE_SEQ_IN_MSGID(ipmb_seq, seqid), |
| 1539 | ipmb_seq, broadcast, |
| 1540 | source_address, source_lun); |
| 1541 | |
| 1542 | /* Copy the message into the recv message data, so we |
| 1543 | can retransmit it later if necessary. */ |
| 1544 | memcpy(recv_msg->msg_data, smi_msg->data, |
| 1545 | smi_msg->data_size); |
| 1546 | recv_msg->msg.data = recv_msg->msg_data; |
| 1547 | recv_msg->msg.data_len = smi_msg->data_size; |
| 1548 | |
| 1549 | /* We don't unlock until here, because we need |
| 1550 | to copy the completed message into the |
| 1551 | recv_msg before we release the lock. |
| 1552 | Otherwise, race conditions may bite us. I |
| 1553 | know that's pretty paranoid, but I prefer |
| 1554 | to be correct. */ |
| 1555 | spin_unlock_irqrestore(&(intf->seq_lock), flags); |
| 1556 | } |
| 1557 | } else if (addr->addr_type == IPMI_LAN_ADDR_TYPE) { |
| 1558 | struct ipmi_lan_addr *lan_addr; |
| 1559 | unsigned char ipmb_seq; |
| 1560 | long seqid; |
| 1561 | |
Jayachandran C | 12fc1d7 | 2006-02-03 03:04:51 -0800 | [diff] [blame] | 1562 | if (addr->channel >= IPMI_MAX_CHANNELS) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1563 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 1564 | intf->sent_invalid_commands++; |
| 1565 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 1566 | rv = -EINVAL; |
| 1567 | goto out_err; |
| 1568 | } |
| 1569 | |
| 1570 | if ((intf->channels[addr->channel].medium |
| 1571 | != IPMI_CHANNEL_MEDIUM_8023LAN) |
| 1572 | && (intf->channels[addr->channel].medium |
| 1573 | != IPMI_CHANNEL_MEDIUM_ASYNC)) |
| 1574 | { |
| 1575 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 1576 | intf->sent_invalid_commands++; |
| 1577 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 1578 | rv = -EINVAL; |
| 1579 | goto out_err; |
| 1580 | } |
| 1581 | |
| 1582 | retries = 4; |
| 1583 | |
| 1584 | /* Default to 1 second retries. */ |
| 1585 | if (retry_time_ms == 0) |
| 1586 | retry_time_ms = 1000; |
| 1587 | |
| 1588 | /* 11 for the header and 1 for the checksum. */ |
| 1589 | if ((msg->data_len + 12) > IPMI_MAX_MSG_LENGTH) { |
| 1590 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 1591 | intf->sent_invalid_commands++; |
| 1592 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 1593 | rv = -EMSGSIZE; |
| 1594 | goto out_err; |
| 1595 | } |
| 1596 | |
| 1597 | lan_addr = (struct ipmi_lan_addr *) addr; |
| 1598 | if (lan_addr->lun > 3) { |
| 1599 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 1600 | intf->sent_invalid_commands++; |
| 1601 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 1602 | rv = -EINVAL; |
| 1603 | goto out_err; |
| 1604 | } |
| 1605 | |
| 1606 | memcpy(&recv_msg->addr, lan_addr, sizeof(*lan_addr)); |
| 1607 | |
| 1608 | if (recv_msg->msg.netfn & 0x1) { |
| 1609 | /* It's a response, so use the user's sequence |
| 1610 | from msgid. */ |
| 1611 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 1612 | intf->sent_lan_responses++; |
| 1613 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 1614 | format_lan_msg(smi_msg, msg, lan_addr, msgid, |
| 1615 | msgid, source_lun); |
| 1616 | |
| 1617 | /* Save the receive message so we can use it |
| 1618 | to deliver the response. */ |
| 1619 | smi_msg->user_data = recv_msg; |
| 1620 | } else { |
| 1621 | /* It's a command, so get a sequence for it. */ |
| 1622 | |
| 1623 | spin_lock_irqsave(&(intf->seq_lock), flags); |
| 1624 | |
| 1625 | spin_lock(&intf->counter_lock); |
| 1626 | intf->sent_lan_commands++; |
| 1627 | spin_unlock(&intf->counter_lock); |
| 1628 | |
| 1629 | /* Create a sequence number with a 1 second |
| 1630 | timeout and 4 retries. */ |
| 1631 | rv = intf_next_seq(intf, |
| 1632 | recv_msg, |
| 1633 | retry_time_ms, |
| 1634 | retries, |
| 1635 | 0, |
| 1636 | &ipmb_seq, |
| 1637 | &seqid); |
| 1638 | if (rv) { |
| 1639 | /* We have used up all the sequence numbers, |
| 1640 | probably, so abort. */ |
| 1641 | spin_unlock_irqrestore(&(intf->seq_lock), |
| 1642 | flags); |
| 1643 | goto out_err; |
| 1644 | } |
| 1645 | |
| 1646 | /* Store the sequence number in the message, |
| 1647 | so that when the send message response |
| 1648 | comes back we can start the timer. */ |
| 1649 | format_lan_msg(smi_msg, msg, lan_addr, |
| 1650 | STORE_SEQ_IN_MSGID(ipmb_seq, seqid), |
| 1651 | ipmb_seq, source_lun); |
| 1652 | |
| 1653 | /* Copy the message into the recv message data, so we |
| 1654 | can retransmit it later if necessary. */ |
| 1655 | memcpy(recv_msg->msg_data, smi_msg->data, |
| 1656 | smi_msg->data_size); |
| 1657 | recv_msg->msg.data = recv_msg->msg_data; |
| 1658 | recv_msg->msg.data_len = smi_msg->data_size; |
| 1659 | |
| 1660 | /* We don't unlock until here, because we need |
| 1661 | to copy the completed message into the |
| 1662 | recv_msg before we release the lock. |
| 1663 | Otherwise, race conditions may bite us. I |
| 1664 | know that's pretty paranoid, but I prefer |
| 1665 | to be correct. */ |
| 1666 | spin_unlock_irqrestore(&(intf->seq_lock), flags); |
| 1667 | } |
| 1668 | } else { |
| 1669 | /* Unknown address type. */ |
| 1670 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 1671 | intf->sent_invalid_commands++; |
| 1672 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 1673 | rv = -EINVAL; |
| 1674 | goto out_err; |
| 1675 | } |
| 1676 | |
| 1677 | #ifdef DEBUG_MSGING |
| 1678 | { |
| 1679 | int m; |
Corey Minyard | e8b3361 | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 1680 | for (m = 0; m < smi_msg->data_size; m++) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1681 | printk(" %2.2x", smi_msg->data[m]); |
| 1682 | printk("\n"); |
| 1683 | } |
| 1684 | #endif |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 1685 | |
| 1686 | handlers->sender(intf->send_info, smi_msg, priority); |
| 1687 | rcu_read_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1688 | |
| 1689 | return 0; |
| 1690 | |
| 1691 | out_err: |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 1692 | rcu_read_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1693 | ipmi_free_smi_msg(smi_msg); |
| 1694 | ipmi_free_recv_msg(recv_msg); |
| 1695 | return rv; |
| 1696 | } |
| 1697 | |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 1698 | static int check_addr(ipmi_smi_t intf, |
| 1699 | struct ipmi_addr *addr, |
| 1700 | unsigned char *saddr, |
| 1701 | unsigned char *lun) |
| 1702 | { |
| 1703 | if (addr->channel >= IPMI_MAX_CHANNELS) |
| 1704 | return -EINVAL; |
| 1705 | *lun = intf->channels[addr->channel].lun; |
| 1706 | *saddr = intf->channels[addr->channel].address; |
| 1707 | return 0; |
| 1708 | } |
| 1709 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1710 | int ipmi_request_settime(ipmi_user_t user, |
| 1711 | struct ipmi_addr *addr, |
| 1712 | long msgid, |
| 1713 | struct kernel_ipmi_msg *msg, |
| 1714 | void *user_msg_data, |
| 1715 | int priority, |
| 1716 | int retries, |
| 1717 | unsigned int retry_time_ms) |
| 1718 | { |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 1719 | unsigned char saddr, lun; |
| 1720 | int rv; |
| 1721 | |
Corey Minyard | 8a3628d | 2006-03-31 02:30:40 -0800 | [diff] [blame] | 1722 | if (!user) |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 1723 | return -EINVAL; |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 1724 | rv = check_addr(user->intf, addr, &saddr, &lun); |
| 1725 | if (rv) |
| 1726 | return rv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1727 | return i_ipmi_request(user, |
| 1728 | user->intf, |
| 1729 | addr, |
| 1730 | msgid, |
| 1731 | msg, |
| 1732 | user_msg_data, |
| 1733 | NULL, NULL, |
| 1734 | priority, |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 1735 | saddr, |
| 1736 | lun, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1737 | retries, |
| 1738 | retry_time_ms); |
| 1739 | } |
| 1740 | |
| 1741 | int ipmi_request_supply_msgs(ipmi_user_t user, |
| 1742 | struct ipmi_addr *addr, |
| 1743 | long msgid, |
| 1744 | struct kernel_ipmi_msg *msg, |
| 1745 | void *user_msg_data, |
| 1746 | void *supplied_smi, |
| 1747 | struct ipmi_recv_msg *supplied_recv, |
| 1748 | int priority) |
| 1749 | { |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 1750 | unsigned char saddr, lun; |
| 1751 | int rv; |
| 1752 | |
Corey Minyard | 8a3628d | 2006-03-31 02:30:40 -0800 | [diff] [blame] | 1753 | if (!user) |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 1754 | return -EINVAL; |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 1755 | rv = check_addr(user->intf, addr, &saddr, &lun); |
| 1756 | if (rv) |
| 1757 | return rv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1758 | return i_ipmi_request(user, |
| 1759 | user->intf, |
| 1760 | addr, |
| 1761 | msgid, |
| 1762 | msg, |
| 1763 | user_msg_data, |
| 1764 | supplied_smi, |
| 1765 | supplied_recv, |
| 1766 | priority, |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 1767 | saddr, |
| 1768 | lun, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1769 | -1, 0); |
| 1770 | } |
| 1771 | |
Randy Dunlap | 1aa16ee | 2006-12-06 20:41:20 -0800 | [diff] [blame] | 1772 | #ifdef CONFIG_PROC_FS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1773 | static int ipmb_file_read_proc(char *page, char **start, off_t off, |
| 1774 | int count, int *eof, void *data) |
| 1775 | { |
| 1776 | char *out = (char *) page; |
| 1777 | ipmi_smi_t intf = data; |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 1778 | int i; |
Corey Minyard | 8a3628d | 2006-03-31 02:30:40 -0800 | [diff] [blame] | 1779 | int rv = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1780 | |
Corey Minyard | e8b3361 | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 1781 | for (i = 0; i < IPMI_MAX_CHANNELS; i++) |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 1782 | rv += sprintf(out+rv, "%x ", intf->channels[i].address); |
| 1783 | out[rv-1] = '\n'; /* Replace the final space with a newline */ |
| 1784 | out[rv] = '\0'; |
| 1785 | rv++; |
| 1786 | return rv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1787 | } |
| 1788 | |
| 1789 | static int version_file_read_proc(char *page, char **start, off_t off, |
| 1790 | int count, int *eof, void *data) |
| 1791 | { |
| 1792 | char *out = (char *) page; |
| 1793 | ipmi_smi_t intf = data; |
| 1794 | |
| 1795 | return sprintf(out, "%d.%d\n", |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 1796 | ipmi_version_major(&intf->bmc->id), |
| 1797 | ipmi_version_minor(&intf->bmc->id)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1798 | } |
| 1799 | |
| 1800 | static int stat_file_read_proc(char *page, char **start, off_t off, |
| 1801 | int count, int *eof, void *data) |
| 1802 | { |
| 1803 | char *out = (char *) page; |
| 1804 | ipmi_smi_t intf = data; |
| 1805 | |
| 1806 | out += sprintf(out, "sent_invalid_commands: %d\n", |
| 1807 | intf->sent_invalid_commands); |
| 1808 | out += sprintf(out, "sent_local_commands: %d\n", |
| 1809 | intf->sent_local_commands); |
| 1810 | out += sprintf(out, "handled_local_responses: %d\n", |
| 1811 | intf->handled_local_responses); |
| 1812 | out += sprintf(out, "unhandled_local_responses: %d\n", |
| 1813 | intf->unhandled_local_responses); |
| 1814 | out += sprintf(out, "sent_ipmb_commands: %d\n", |
| 1815 | intf->sent_ipmb_commands); |
| 1816 | out += sprintf(out, "sent_ipmb_command_errs: %d\n", |
| 1817 | intf->sent_ipmb_command_errs); |
| 1818 | out += sprintf(out, "retransmitted_ipmb_commands: %d\n", |
| 1819 | intf->retransmitted_ipmb_commands); |
| 1820 | out += sprintf(out, "timed_out_ipmb_commands: %d\n", |
| 1821 | intf->timed_out_ipmb_commands); |
| 1822 | out += sprintf(out, "timed_out_ipmb_broadcasts: %d\n", |
| 1823 | intf->timed_out_ipmb_broadcasts); |
| 1824 | out += sprintf(out, "sent_ipmb_responses: %d\n", |
| 1825 | intf->sent_ipmb_responses); |
| 1826 | out += sprintf(out, "handled_ipmb_responses: %d\n", |
| 1827 | intf->handled_ipmb_responses); |
| 1828 | out += sprintf(out, "invalid_ipmb_responses: %d\n", |
| 1829 | intf->invalid_ipmb_responses); |
| 1830 | out += sprintf(out, "unhandled_ipmb_responses: %d\n", |
| 1831 | intf->unhandled_ipmb_responses); |
| 1832 | out += sprintf(out, "sent_lan_commands: %d\n", |
| 1833 | intf->sent_lan_commands); |
| 1834 | out += sprintf(out, "sent_lan_command_errs: %d\n", |
| 1835 | intf->sent_lan_command_errs); |
| 1836 | out += sprintf(out, "retransmitted_lan_commands: %d\n", |
| 1837 | intf->retransmitted_lan_commands); |
| 1838 | out += sprintf(out, "timed_out_lan_commands: %d\n", |
| 1839 | intf->timed_out_lan_commands); |
| 1840 | out += sprintf(out, "sent_lan_responses: %d\n", |
| 1841 | intf->sent_lan_responses); |
| 1842 | out += sprintf(out, "handled_lan_responses: %d\n", |
| 1843 | intf->handled_lan_responses); |
| 1844 | out += sprintf(out, "invalid_lan_responses: %d\n", |
| 1845 | intf->invalid_lan_responses); |
| 1846 | out += sprintf(out, "unhandled_lan_responses: %d\n", |
| 1847 | intf->unhandled_lan_responses); |
| 1848 | out += sprintf(out, "handled_commands: %d\n", |
| 1849 | intf->handled_commands); |
| 1850 | out += sprintf(out, "invalid_commands: %d\n", |
| 1851 | intf->invalid_commands); |
| 1852 | out += sprintf(out, "unhandled_commands: %d\n", |
| 1853 | intf->unhandled_commands); |
| 1854 | out += sprintf(out, "invalid_events: %d\n", |
| 1855 | intf->invalid_events); |
| 1856 | out += sprintf(out, "events: %d\n", |
| 1857 | intf->events); |
| 1858 | |
| 1859 | return (out - ((char *) page)); |
| 1860 | } |
Randy Dunlap | 1aa16ee | 2006-12-06 20:41:20 -0800 | [diff] [blame] | 1861 | #endif /* CONFIG_PROC_FS */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1862 | |
| 1863 | int ipmi_smi_add_proc_entry(ipmi_smi_t smi, char *name, |
| 1864 | read_proc_t *read_proc, write_proc_t *write_proc, |
| 1865 | void *data, struct module *owner) |
| 1866 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1867 | int rv = 0; |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 1868 | #ifdef CONFIG_PROC_FS |
| 1869 | struct proc_dir_entry *file; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1870 | struct ipmi_proc_entry *entry; |
| 1871 | |
| 1872 | /* Create a list element. */ |
| 1873 | entry = kmalloc(sizeof(*entry), GFP_KERNEL); |
| 1874 | if (!entry) |
| 1875 | return -ENOMEM; |
| 1876 | entry->name = kmalloc(strlen(name)+1, GFP_KERNEL); |
| 1877 | if (!entry->name) { |
| 1878 | kfree(entry); |
| 1879 | return -ENOMEM; |
| 1880 | } |
| 1881 | strcpy(entry->name, name); |
| 1882 | |
| 1883 | file = create_proc_entry(name, 0, smi->proc_dir); |
| 1884 | if (!file) { |
| 1885 | kfree(entry->name); |
| 1886 | kfree(entry); |
| 1887 | rv = -ENOMEM; |
| 1888 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1889 | file->data = data; |
| 1890 | file->read_proc = read_proc; |
| 1891 | file->write_proc = write_proc; |
| 1892 | file->owner = owner; |
| 1893 | |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 1894 | spin_lock(&smi->proc_entry_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1895 | /* Stick it on the list. */ |
| 1896 | entry->next = smi->proc_entries; |
| 1897 | smi->proc_entries = entry; |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 1898 | spin_unlock(&smi->proc_entry_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1899 | } |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 1900 | #endif /* CONFIG_PROC_FS */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1901 | |
| 1902 | return rv; |
| 1903 | } |
| 1904 | |
| 1905 | static int add_proc_entries(ipmi_smi_t smi, int num) |
| 1906 | { |
| 1907 | int rv = 0; |
| 1908 | |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 1909 | #ifdef CONFIG_PROC_FS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1910 | sprintf(smi->proc_dir_name, "%d", num); |
| 1911 | smi->proc_dir = proc_mkdir(smi->proc_dir_name, proc_ipmi_root); |
| 1912 | if (!smi->proc_dir) |
| 1913 | rv = -ENOMEM; |
| 1914 | else { |
| 1915 | smi->proc_dir->owner = THIS_MODULE; |
| 1916 | } |
| 1917 | |
| 1918 | if (rv == 0) |
| 1919 | rv = ipmi_smi_add_proc_entry(smi, "stats", |
| 1920 | stat_file_read_proc, NULL, |
| 1921 | smi, THIS_MODULE); |
| 1922 | |
| 1923 | if (rv == 0) |
| 1924 | rv = ipmi_smi_add_proc_entry(smi, "ipmb", |
| 1925 | ipmb_file_read_proc, NULL, |
| 1926 | smi, THIS_MODULE); |
| 1927 | |
| 1928 | if (rv == 0) |
| 1929 | rv = ipmi_smi_add_proc_entry(smi, "version", |
| 1930 | version_file_read_proc, NULL, |
| 1931 | smi, THIS_MODULE); |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 1932 | #endif /* CONFIG_PROC_FS */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1933 | |
| 1934 | return rv; |
| 1935 | } |
| 1936 | |
| 1937 | static void remove_proc_entries(ipmi_smi_t smi) |
| 1938 | { |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 1939 | #ifdef CONFIG_PROC_FS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1940 | struct ipmi_proc_entry *entry; |
| 1941 | |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 1942 | spin_lock(&smi->proc_entry_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1943 | while (smi->proc_entries) { |
| 1944 | entry = smi->proc_entries; |
| 1945 | smi->proc_entries = entry->next; |
| 1946 | |
| 1947 | remove_proc_entry(entry->name, smi->proc_dir); |
| 1948 | kfree(entry->name); |
| 1949 | kfree(entry); |
| 1950 | } |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 1951 | spin_unlock(&smi->proc_entry_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1952 | remove_proc_entry(smi->proc_dir_name, proc_ipmi_root); |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 1953 | #endif /* CONFIG_PROC_FS */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1954 | } |
| 1955 | |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 1956 | static int __find_bmc_guid(struct device *dev, void *data) |
| 1957 | { |
| 1958 | unsigned char *id = data; |
| 1959 | struct bmc_device *bmc = dev_get_drvdata(dev); |
| 1960 | return memcmp(bmc->guid, id, 16) == 0; |
| 1961 | } |
| 1962 | |
| 1963 | static struct bmc_device *ipmi_find_bmc_guid(struct device_driver *drv, |
| 1964 | unsigned char *guid) |
| 1965 | { |
| 1966 | struct device *dev; |
| 1967 | |
| 1968 | dev = driver_find_device(drv, NULL, guid, __find_bmc_guid); |
| 1969 | if (dev) |
| 1970 | return dev_get_drvdata(dev); |
| 1971 | else |
| 1972 | return NULL; |
| 1973 | } |
| 1974 | |
| 1975 | struct prod_dev_id { |
| 1976 | unsigned int product_id; |
| 1977 | unsigned char device_id; |
| 1978 | }; |
| 1979 | |
| 1980 | static int __find_bmc_prod_dev_id(struct device *dev, void *data) |
| 1981 | { |
| 1982 | struct prod_dev_id *id = data; |
| 1983 | struct bmc_device *bmc = dev_get_drvdata(dev); |
| 1984 | |
| 1985 | return (bmc->id.product_id == id->product_id |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 1986 | && bmc->id.device_id == id->device_id); |
| 1987 | } |
| 1988 | |
| 1989 | static struct bmc_device *ipmi_find_bmc_prod_dev_id( |
| 1990 | struct device_driver *drv, |
Corey Minyard | f0b55da | 2006-12-06 20:40:54 -0800 | [diff] [blame] | 1991 | unsigned int product_id, unsigned char device_id) |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 1992 | { |
| 1993 | struct prod_dev_id id = { |
| 1994 | .product_id = product_id, |
| 1995 | .device_id = device_id, |
| 1996 | }; |
| 1997 | struct device *dev; |
| 1998 | |
| 1999 | dev = driver_find_device(drv, NULL, &id, __find_bmc_prod_dev_id); |
| 2000 | if (dev) |
| 2001 | return dev_get_drvdata(dev); |
| 2002 | else |
| 2003 | return NULL; |
| 2004 | } |
| 2005 | |
| 2006 | static ssize_t device_id_show(struct device *dev, |
| 2007 | struct device_attribute *attr, |
| 2008 | char *buf) |
| 2009 | { |
| 2010 | struct bmc_device *bmc = dev_get_drvdata(dev); |
| 2011 | |
| 2012 | return snprintf(buf, 10, "%u\n", bmc->id.device_id); |
| 2013 | } |
| 2014 | |
| 2015 | static ssize_t provides_dev_sdrs_show(struct device *dev, |
| 2016 | struct device_attribute *attr, |
| 2017 | char *buf) |
| 2018 | { |
| 2019 | struct bmc_device *bmc = dev_get_drvdata(dev); |
| 2020 | |
| 2021 | return snprintf(buf, 10, "%u\n", |
Corey Minyard | 7947d2c | 2006-11-10 12:27:50 -0800 | [diff] [blame] | 2022 | (bmc->id.device_revision & 0x80) >> 7); |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2023 | } |
| 2024 | |
| 2025 | static ssize_t revision_show(struct device *dev, struct device_attribute *attr, |
| 2026 | char *buf) |
| 2027 | { |
| 2028 | struct bmc_device *bmc = dev_get_drvdata(dev); |
| 2029 | |
| 2030 | return snprintf(buf, 20, "%u\n", |
Corey Minyard | 7947d2c | 2006-11-10 12:27:50 -0800 | [diff] [blame] | 2031 | bmc->id.device_revision & 0x0F); |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2032 | } |
| 2033 | |
| 2034 | static ssize_t firmware_rev_show(struct device *dev, |
| 2035 | struct device_attribute *attr, |
| 2036 | char *buf) |
| 2037 | { |
| 2038 | struct bmc_device *bmc = dev_get_drvdata(dev); |
| 2039 | |
| 2040 | return snprintf(buf, 20, "%u.%x\n", bmc->id.firmware_revision_1, |
| 2041 | bmc->id.firmware_revision_2); |
| 2042 | } |
| 2043 | |
| 2044 | static ssize_t ipmi_version_show(struct device *dev, |
| 2045 | struct device_attribute *attr, |
| 2046 | char *buf) |
| 2047 | { |
| 2048 | struct bmc_device *bmc = dev_get_drvdata(dev); |
| 2049 | |
| 2050 | return snprintf(buf, 20, "%u.%u\n", |
| 2051 | ipmi_version_major(&bmc->id), |
| 2052 | ipmi_version_minor(&bmc->id)); |
| 2053 | } |
| 2054 | |
| 2055 | static ssize_t add_dev_support_show(struct device *dev, |
| 2056 | struct device_attribute *attr, |
| 2057 | char *buf) |
| 2058 | { |
| 2059 | struct bmc_device *bmc = dev_get_drvdata(dev); |
| 2060 | |
| 2061 | return snprintf(buf, 10, "0x%02x\n", |
| 2062 | bmc->id.additional_device_support); |
| 2063 | } |
| 2064 | |
| 2065 | static ssize_t manufacturer_id_show(struct device *dev, |
| 2066 | struct device_attribute *attr, |
| 2067 | char *buf) |
| 2068 | { |
| 2069 | struct bmc_device *bmc = dev_get_drvdata(dev); |
| 2070 | |
| 2071 | return snprintf(buf, 20, "0x%6.6x\n", bmc->id.manufacturer_id); |
| 2072 | } |
| 2073 | |
| 2074 | static ssize_t product_id_show(struct device *dev, |
| 2075 | struct device_attribute *attr, |
| 2076 | char *buf) |
| 2077 | { |
| 2078 | struct bmc_device *bmc = dev_get_drvdata(dev); |
| 2079 | |
| 2080 | return snprintf(buf, 10, "0x%4.4x\n", bmc->id.product_id); |
| 2081 | } |
| 2082 | |
| 2083 | static ssize_t aux_firmware_rev_show(struct device *dev, |
| 2084 | struct device_attribute *attr, |
| 2085 | char *buf) |
| 2086 | { |
| 2087 | struct bmc_device *bmc = dev_get_drvdata(dev); |
| 2088 | |
| 2089 | return snprintf(buf, 21, "0x%02x 0x%02x 0x%02x 0x%02x\n", |
| 2090 | bmc->id.aux_firmware_revision[3], |
| 2091 | bmc->id.aux_firmware_revision[2], |
| 2092 | bmc->id.aux_firmware_revision[1], |
| 2093 | bmc->id.aux_firmware_revision[0]); |
| 2094 | } |
| 2095 | |
| 2096 | static ssize_t guid_show(struct device *dev, struct device_attribute *attr, |
| 2097 | char *buf) |
| 2098 | { |
| 2099 | struct bmc_device *bmc = dev_get_drvdata(dev); |
| 2100 | |
| 2101 | return snprintf(buf, 100, "%Lx%Lx\n", |
| 2102 | (long long) bmc->guid[0], |
| 2103 | (long long) bmc->guid[8]); |
| 2104 | } |
| 2105 | |
Jeff Garzik | 5e59393 | 2006-10-11 01:22:21 -0700 | [diff] [blame] | 2106 | static void remove_files(struct bmc_device *bmc) |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2107 | { |
Corey Minyard | f0b55da | 2006-12-06 20:40:54 -0800 | [diff] [blame] | 2108 | if (!bmc->dev) |
| 2109 | return; |
| 2110 | |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2111 | device_remove_file(&bmc->dev->dev, |
| 2112 | &bmc->device_id_attr); |
| 2113 | device_remove_file(&bmc->dev->dev, |
| 2114 | &bmc->provides_dev_sdrs_attr); |
| 2115 | device_remove_file(&bmc->dev->dev, |
| 2116 | &bmc->revision_attr); |
| 2117 | device_remove_file(&bmc->dev->dev, |
| 2118 | &bmc->firmware_rev_attr); |
| 2119 | device_remove_file(&bmc->dev->dev, |
| 2120 | &bmc->version_attr); |
| 2121 | device_remove_file(&bmc->dev->dev, |
| 2122 | &bmc->add_dev_support_attr); |
| 2123 | device_remove_file(&bmc->dev->dev, |
| 2124 | &bmc->manufacturer_id_attr); |
| 2125 | device_remove_file(&bmc->dev->dev, |
| 2126 | &bmc->product_id_attr); |
Jeff Garzik | 5e59393 | 2006-10-11 01:22:21 -0700 | [diff] [blame] | 2127 | |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2128 | if (bmc->id.aux_firmware_revision_set) |
| 2129 | device_remove_file(&bmc->dev->dev, |
| 2130 | &bmc->aux_firmware_rev_attr); |
| 2131 | if (bmc->guid_set) |
| 2132 | device_remove_file(&bmc->dev->dev, |
| 2133 | &bmc->guid_attr); |
Jeff Garzik | 5e59393 | 2006-10-11 01:22:21 -0700 | [diff] [blame] | 2134 | } |
| 2135 | |
| 2136 | static void |
| 2137 | cleanup_bmc_device(struct kref *ref) |
| 2138 | { |
| 2139 | struct bmc_device *bmc; |
| 2140 | |
| 2141 | bmc = container_of(ref, struct bmc_device, refcount); |
| 2142 | |
| 2143 | remove_files(bmc); |
Corey Minyard | 1d5636c | 2006-12-10 02:19:08 -0800 | [diff] [blame] | 2144 | platform_device_unregister(bmc->dev); |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2145 | kfree(bmc); |
| 2146 | } |
| 2147 | |
| 2148 | static void ipmi_bmc_unregister(ipmi_smi_t intf) |
| 2149 | { |
| 2150 | struct bmc_device *bmc = intf->bmc; |
| 2151 | |
Corey Minyard | 759643b | 2006-12-06 20:40:59 -0800 | [diff] [blame] | 2152 | if (intf->sysfs_name) { |
| 2153 | sysfs_remove_link(&intf->si_dev->kobj, intf->sysfs_name); |
| 2154 | kfree(intf->sysfs_name); |
| 2155 | intf->sysfs_name = NULL; |
| 2156 | } |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2157 | if (intf->my_dev_name) { |
| 2158 | sysfs_remove_link(&bmc->dev->dev.kobj, intf->my_dev_name); |
| 2159 | kfree(intf->my_dev_name); |
| 2160 | intf->my_dev_name = NULL; |
| 2161 | } |
| 2162 | |
| 2163 | mutex_lock(&ipmidriver_mutex); |
| 2164 | kref_put(&bmc->refcount, cleanup_bmc_device); |
Corey Minyard | f0b55da | 2006-12-06 20:40:54 -0800 | [diff] [blame] | 2165 | intf->bmc = NULL; |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2166 | mutex_unlock(&ipmidriver_mutex); |
| 2167 | } |
| 2168 | |
Jeff Garzik | 5e59393 | 2006-10-11 01:22:21 -0700 | [diff] [blame] | 2169 | static int create_files(struct bmc_device *bmc) |
| 2170 | { |
| 2171 | int err; |
| 2172 | |
Corey Minyard | f0b55da | 2006-12-06 20:40:54 -0800 | [diff] [blame] | 2173 | bmc->device_id_attr.attr.name = "device_id"; |
| 2174 | bmc->device_id_attr.attr.owner = THIS_MODULE; |
| 2175 | bmc->device_id_attr.attr.mode = S_IRUGO; |
| 2176 | bmc->device_id_attr.show = device_id_show; |
| 2177 | |
| 2178 | bmc->provides_dev_sdrs_attr.attr.name = "provides_device_sdrs"; |
| 2179 | bmc->provides_dev_sdrs_attr.attr.owner = THIS_MODULE; |
| 2180 | bmc->provides_dev_sdrs_attr.attr.mode = S_IRUGO; |
| 2181 | bmc->provides_dev_sdrs_attr.show = provides_dev_sdrs_show; |
| 2182 | |
| 2183 | bmc->revision_attr.attr.name = "revision"; |
| 2184 | bmc->revision_attr.attr.owner = THIS_MODULE; |
| 2185 | bmc->revision_attr.attr.mode = S_IRUGO; |
| 2186 | bmc->revision_attr.show = revision_show; |
| 2187 | |
| 2188 | bmc->firmware_rev_attr.attr.name = "firmware_revision"; |
| 2189 | bmc->firmware_rev_attr.attr.owner = THIS_MODULE; |
| 2190 | bmc->firmware_rev_attr.attr.mode = S_IRUGO; |
| 2191 | bmc->firmware_rev_attr.show = firmware_rev_show; |
| 2192 | |
| 2193 | bmc->version_attr.attr.name = "ipmi_version"; |
| 2194 | bmc->version_attr.attr.owner = THIS_MODULE; |
| 2195 | bmc->version_attr.attr.mode = S_IRUGO; |
| 2196 | bmc->version_attr.show = ipmi_version_show; |
| 2197 | |
| 2198 | bmc->add_dev_support_attr.attr.name = "additional_device_support"; |
| 2199 | bmc->add_dev_support_attr.attr.owner = THIS_MODULE; |
| 2200 | bmc->add_dev_support_attr.attr.mode = S_IRUGO; |
| 2201 | bmc->add_dev_support_attr.show = add_dev_support_show; |
| 2202 | |
| 2203 | bmc->manufacturer_id_attr.attr.name = "manufacturer_id"; |
| 2204 | bmc->manufacturer_id_attr.attr.owner = THIS_MODULE; |
| 2205 | bmc->manufacturer_id_attr.attr.mode = S_IRUGO; |
| 2206 | bmc->manufacturer_id_attr.show = manufacturer_id_show; |
| 2207 | |
| 2208 | bmc->product_id_attr.attr.name = "product_id"; |
| 2209 | bmc->product_id_attr.attr.owner = THIS_MODULE; |
| 2210 | bmc->product_id_attr.attr.mode = S_IRUGO; |
| 2211 | bmc->product_id_attr.show = product_id_show; |
| 2212 | |
| 2213 | bmc->guid_attr.attr.name = "guid"; |
| 2214 | bmc->guid_attr.attr.owner = THIS_MODULE; |
| 2215 | bmc->guid_attr.attr.mode = S_IRUGO; |
| 2216 | bmc->guid_attr.show = guid_show; |
| 2217 | |
| 2218 | bmc->aux_firmware_rev_attr.attr.name = "aux_firmware_revision"; |
| 2219 | bmc->aux_firmware_rev_attr.attr.owner = THIS_MODULE; |
| 2220 | bmc->aux_firmware_rev_attr.attr.mode = S_IRUGO; |
| 2221 | bmc->aux_firmware_rev_attr.show = aux_firmware_rev_show; |
| 2222 | |
Jeff Garzik | 5e59393 | 2006-10-11 01:22:21 -0700 | [diff] [blame] | 2223 | err = device_create_file(&bmc->dev->dev, |
| 2224 | &bmc->device_id_attr); |
| 2225 | if (err) goto out; |
| 2226 | err = device_create_file(&bmc->dev->dev, |
| 2227 | &bmc->provides_dev_sdrs_attr); |
| 2228 | if (err) goto out_devid; |
| 2229 | err = device_create_file(&bmc->dev->dev, |
| 2230 | &bmc->revision_attr); |
| 2231 | if (err) goto out_sdrs; |
| 2232 | err = device_create_file(&bmc->dev->dev, |
| 2233 | &bmc->firmware_rev_attr); |
| 2234 | if (err) goto out_rev; |
| 2235 | err = device_create_file(&bmc->dev->dev, |
| 2236 | &bmc->version_attr); |
| 2237 | if (err) goto out_firm; |
| 2238 | err = device_create_file(&bmc->dev->dev, |
| 2239 | &bmc->add_dev_support_attr); |
| 2240 | if (err) goto out_version; |
| 2241 | err = device_create_file(&bmc->dev->dev, |
| 2242 | &bmc->manufacturer_id_attr); |
| 2243 | if (err) goto out_add_dev; |
| 2244 | err = device_create_file(&bmc->dev->dev, |
| 2245 | &bmc->product_id_attr); |
| 2246 | if (err) goto out_manu; |
| 2247 | if (bmc->id.aux_firmware_revision_set) { |
| 2248 | err = device_create_file(&bmc->dev->dev, |
| 2249 | &bmc->aux_firmware_rev_attr); |
| 2250 | if (err) goto out_prod_id; |
| 2251 | } |
| 2252 | if (bmc->guid_set) { |
| 2253 | err = device_create_file(&bmc->dev->dev, |
| 2254 | &bmc->guid_attr); |
| 2255 | if (err) goto out_aux_firm; |
| 2256 | } |
| 2257 | |
| 2258 | return 0; |
| 2259 | |
| 2260 | out_aux_firm: |
| 2261 | if (bmc->id.aux_firmware_revision_set) |
| 2262 | device_remove_file(&bmc->dev->dev, |
| 2263 | &bmc->aux_firmware_rev_attr); |
| 2264 | out_prod_id: |
| 2265 | device_remove_file(&bmc->dev->dev, |
| 2266 | &bmc->product_id_attr); |
| 2267 | out_manu: |
| 2268 | device_remove_file(&bmc->dev->dev, |
| 2269 | &bmc->manufacturer_id_attr); |
| 2270 | out_add_dev: |
| 2271 | device_remove_file(&bmc->dev->dev, |
| 2272 | &bmc->add_dev_support_attr); |
| 2273 | out_version: |
| 2274 | device_remove_file(&bmc->dev->dev, |
| 2275 | &bmc->version_attr); |
| 2276 | out_firm: |
| 2277 | device_remove_file(&bmc->dev->dev, |
| 2278 | &bmc->firmware_rev_attr); |
| 2279 | out_rev: |
| 2280 | device_remove_file(&bmc->dev->dev, |
| 2281 | &bmc->revision_attr); |
| 2282 | out_sdrs: |
| 2283 | device_remove_file(&bmc->dev->dev, |
| 2284 | &bmc->provides_dev_sdrs_attr); |
| 2285 | out_devid: |
| 2286 | device_remove_file(&bmc->dev->dev, |
| 2287 | &bmc->device_id_attr); |
| 2288 | out: |
| 2289 | return err; |
| 2290 | } |
| 2291 | |
Corey Minyard | 759643b | 2006-12-06 20:40:59 -0800 | [diff] [blame] | 2292 | static int ipmi_bmc_register(ipmi_smi_t intf, int ifnum, |
| 2293 | const char *sysfs_name) |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2294 | { |
| 2295 | int rv; |
| 2296 | struct bmc_device *bmc = intf->bmc; |
| 2297 | struct bmc_device *old_bmc; |
| 2298 | int size; |
| 2299 | char dummy[1]; |
| 2300 | |
| 2301 | mutex_lock(&ipmidriver_mutex); |
| 2302 | |
| 2303 | /* |
| 2304 | * Try to find if there is an bmc_device struct |
| 2305 | * representing the interfaced BMC already |
| 2306 | */ |
| 2307 | if (bmc->guid_set) |
| 2308 | old_bmc = ipmi_find_bmc_guid(&ipmidriver, bmc->guid); |
| 2309 | else |
| 2310 | old_bmc = ipmi_find_bmc_prod_dev_id(&ipmidriver, |
| 2311 | bmc->id.product_id, |
| 2312 | bmc->id.device_id); |
| 2313 | |
| 2314 | /* |
| 2315 | * If there is already an bmc_device, free the new one, |
| 2316 | * otherwise register the new BMC device |
| 2317 | */ |
| 2318 | if (old_bmc) { |
| 2319 | kfree(bmc); |
| 2320 | intf->bmc = old_bmc; |
| 2321 | bmc = old_bmc; |
| 2322 | |
| 2323 | kref_get(&bmc->refcount); |
| 2324 | mutex_unlock(&ipmidriver_mutex); |
| 2325 | |
| 2326 | printk(KERN_INFO |
| 2327 | "ipmi: interfacing existing BMC (man_id: 0x%6.6x," |
| 2328 | " prod_id: 0x%4.4x, dev_id: 0x%2.2x)\n", |
| 2329 | bmc->id.manufacturer_id, |
| 2330 | bmc->id.product_id, |
| 2331 | bmc->id.device_id); |
| 2332 | } else { |
Corey Minyard | f0b55da | 2006-12-06 20:40:54 -0800 | [diff] [blame] | 2333 | char name[14]; |
| 2334 | unsigned char orig_dev_id = bmc->id.device_id; |
| 2335 | int warn_printed = 0; |
| 2336 | |
| 2337 | snprintf(name, sizeof(name), |
| 2338 | "ipmi_bmc.%4.4x", bmc->id.product_id); |
| 2339 | |
| 2340 | while (ipmi_find_bmc_prod_dev_id(&ipmidriver, |
| 2341 | bmc->id.product_id, |
Corey Minyard | 1d5636c | 2006-12-10 02:19:08 -0800 | [diff] [blame] | 2342 | bmc->id.device_id)) { |
Corey Minyard | f0b55da | 2006-12-06 20:40:54 -0800 | [diff] [blame] | 2343 | if (!warn_printed) { |
| 2344 | printk(KERN_WARNING PFX |
| 2345 | "This machine has two different BMCs" |
| 2346 | " with the same product id and device" |
| 2347 | " id. This is an error in the" |
| 2348 | " firmware, but incrementing the" |
| 2349 | " device id to work around the problem." |
| 2350 | " Prod ID = 0x%x, Dev ID = 0x%x\n", |
| 2351 | bmc->id.product_id, bmc->id.device_id); |
| 2352 | warn_printed = 1; |
| 2353 | } |
| 2354 | bmc->id.device_id++; /* Wraps at 255 */ |
| 2355 | if (bmc->id.device_id == orig_dev_id) { |
| 2356 | printk(KERN_ERR PFX |
| 2357 | "Out of device ids!\n"); |
| 2358 | break; |
| 2359 | } |
| 2360 | } |
| 2361 | |
| 2362 | bmc->dev = platform_device_alloc(name, bmc->id.device_id); |
Corey Minyard | 8a3628d | 2006-03-31 02:30:40 -0800 | [diff] [blame] | 2363 | if (!bmc->dev) { |
Corey Minyard | f0b55da | 2006-12-06 20:40:54 -0800 | [diff] [blame] | 2364 | mutex_unlock(&ipmidriver_mutex); |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2365 | printk(KERN_ERR |
| 2366 | "ipmi_msghandler:" |
| 2367 | " Unable to allocate platform device\n"); |
| 2368 | return -ENOMEM; |
| 2369 | } |
| 2370 | bmc->dev->dev.driver = &ipmidriver; |
| 2371 | dev_set_drvdata(&bmc->dev->dev, bmc); |
| 2372 | kref_init(&bmc->refcount); |
| 2373 | |
Zhang, Yanmin | b48f545 | 2006-11-16 01:19:08 -0800 | [diff] [blame] | 2374 | rv = platform_device_add(bmc->dev); |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2375 | mutex_unlock(&ipmidriver_mutex); |
| 2376 | if (rv) { |
Corey Minyard | f0b55da | 2006-12-06 20:40:54 -0800 | [diff] [blame] | 2377 | platform_device_put(bmc->dev); |
| 2378 | bmc->dev = NULL; |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2379 | printk(KERN_ERR |
| 2380 | "ipmi_msghandler:" |
| 2381 | " Unable to register bmc device: %d\n", |
| 2382 | rv); |
| 2383 | /* Don't go to out_err, you can only do that if |
| 2384 | the device is registered already. */ |
| 2385 | return rv; |
| 2386 | } |
| 2387 | |
Jeff Garzik | 5e59393 | 2006-10-11 01:22:21 -0700 | [diff] [blame] | 2388 | rv = create_files(bmc); |
| 2389 | if (rv) { |
| 2390 | mutex_lock(&ipmidriver_mutex); |
| 2391 | platform_device_unregister(bmc->dev); |
| 2392 | mutex_unlock(&ipmidriver_mutex); |
| 2393 | |
| 2394 | return rv; |
| 2395 | } |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2396 | |
| 2397 | printk(KERN_INFO |
| 2398 | "ipmi: Found new BMC (man_id: 0x%6.6x, " |
| 2399 | " prod_id: 0x%4.4x, dev_id: 0x%2.2x)\n", |
| 2400 | bmc->id.manufacturer_id, |
| 2401 | bmc->id.product_id, |
| 2402 | bmc->id.device_id); |
| 2403 | } |
| 2404 | |
| 2405 | /* |
| 2406 | * create symlink from system interface device to bmc device |
| 2407 | * and back. |
| 2408 | */ |
Corey Minyard | 759643b | 2006-12-06 20:40:59 -0800 | [diff] [blame] | 2409 | intf->sysfs_name = kstrdup(sysfs_name, GFP_KERNEL); |
| 2410 | if (!intf->sysfs_name) { |
| 2411 | rv = -ENOMEM; |
| 2412 | printk(KERN_ERR |
| 2413 | "ipmi_msghandler: allocate link to BMC: %d\n", |
| 2414 | rv); |
| 2415 | goto out_err; |
| 2416 | } |
| 2417 | |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2418 | rv = sysfs_create_link(&intf->si_dev->kobj, |
Corey Minyard | 759643b | 2006-12-06 20:40:59 -0800 | [diff] [blame] | 2419 | &bmc->dev->dev.kobj, intf->sysfs_name); |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2420 | if (rv) { |
Corey Minyard | 759643b | 2006-12-06 20:40:59 -0800 | [diff] [blame] | 2421 | kfree(intf->sysfs_name); |
| 2422 | intf->sysfs_name = NULL; |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2423 | printk(KERN_ERR |
| 2424 | "ipmi_msghandler: Unable to create bmc symlink: %d\n", |
| 2425 | rv); |
| 2426 | goto out_err; |
| 2427 | } |
| 2428 | |
Corey Minyard | 759643b | 2006-12-06 20:40:59 -0800 | [diff] [blame] | 2429 | size = snprintf(dummy, 0, "ipmi%d", ifnum); |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2430 | intf->my_dev_name = kmalloc(size+1, GFP_KERNEL); |
| 2431 | if (!intf->my_dev_name) { |
Corey Minyard | 759643b | 2006-12-06 20:40:59 -0800 | [diff] [blame] | 2432 | kfree(intf->sysfs_name); |
| 2433 | intf->sysfs_name = NULL; |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2434 | rv = -ENOMEM; |
| 2435 | printk(KERN_ERR |
| 2436 | "ipmi_msghandler: allocate link from BMC: %d\n", |
| 2437 | rv); |
| 2438 | goto out_err; |
| 2439 | } |
Corey Minyard | 759643b | 2006-12-06 20:40:59 -0800 | [diff] [blame] | 2440 | snprintf(intf->my_dev_name, size+1, "ipmi%d", ifnum); |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2441 | |
| 2442 | rv = sysfs_create_link(&bmc->dev->dev.kobj, &intf->si_dev->kobj, |
| 2443 | intf->my_dev_name); |
| 2444 | if (rv) { |
Corey Minyard | 759643b | 2006-12-06 20:40:59 -0800 | [diff] [blame] | 2445 | kfree(intf->sysfs_name); |
| 2446 | intf->sysfs_name = NULL; |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2447 | kfree(intf->my_dev_name); |
| 2448 | intf->my_dev_name = NULL; |
| 2449 | printk(KERN_ERR |
| 2450 | "ipmi_msghandler:" |
| 2451 | " Unable to create symlink to bmc: %d\n", |
| 2452 | rv); |
| 2453 | goto out_err; |
| 2454 | } |
| 2455 | |
| 2456 | return 0; |
| 2457 | |
| 2458 | out_err: |
| 2459 | ipmi_bmc_unregister(intf); |
| 2460 | return rv; |
| 2461 | } |
| 2462 | |
| 2463 | static int |
| 2464 | send_guid_cmd(ipmi_smi_t intf, int chan) |
| 2465 | { |
| 2466 | struct kernel_ipmi_msg msg; |
| 2467 | struct ipmi_system_interface_addr si; |
| 2468 | |
| 2469 | si.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; |
| 2470 | si.channel = IPMI_BMC_CHANNEL; |
| 2471 | si.lun = 0; |
| 2472 | |
| 2473 | msg.netfn = IPMI_NETFN_APP_REQUEST; |
| 2474 | msg.cmd = IPMI_GET_DEVICE_GUID_CMD; |
| 2475 | msg.data = NULL; |
| 2476 | msg.data_len = 0; |
| 2477 | return i_ipmi_request(NULL, |
| 2478 | intf, |
| 2479 | (struct ipmi_addr *) &si, |
| 2480 | 0, |
| 2481 | &msg, |
| 2482 | intf, |
| 2483 | NULL, |
| 2484 | NULL, |
| 2485 | 0, |
| 2486 | intf->channels[0].address, |
| 2487 | intf->channels[0].lun, |
| 2488 | -1, 0); |
| 2489 | } |
| 2490 | |
| 2491 | static void |
| 2492 | guid_handler(ipmi_smi_t intf, struct ipmi_recv_msg *msg) |
| 2493 | { |
| 2494 | if ((msg->addr.addr_type != IPMI_SYSTEM_INTERFACE_ADDR_TYPE) |
| 2495 | || (msg->msg.netfn != IPMI_NETFN_APP_RESPONSE) |
| 2496 | || (msg->msg.cmd != IPMI_GET_DEVICE_GUID_CMD)) |
| 2497 | /* Not for me */ |
| 2498 | return; |
| 2499 | |
| 2500 | if (msg->msg.data[0] != 0) { |
| 2501 | /* Error from getting the GUID, the BMC doesn't have one. */ |
| 2502 | intf->bmc->guid_set = 0; |
| 2503 | goto out; |
| 2504 | } |
| 2505 | |
| 2506 | if (msg->msg.data_len < 17) { |
| 2507 | intf->bmc->guid_set = 0; |
| 2508 | printk(KERN_WARNING PFX |
| 2509 | "guid_handler: The GUID response from the BMC was too" |
| 2510 | " short, it was %d but should have been 17. Assuming" |
| 2511 | " GUID is not available.\n", |
| 2512 | msg->msg.data_len); |
| 2513 | goto out; |
| 2514 | } |
| 2515 | |
| 2516 | memcpy(intf->bmc->guid, msg->msg.data, 16); |
| 2517 | intf->bmc->guid_set = 1; |
| 2518 | out: |
| 2519 | wake_up(&intf->waitq); |
| 2520 | } |
| 2521 | |
| 2522 | static void |
| 2523 | get_guid(ipmi_smi_t intf) |
| 2524 | { |
| 2525 | int rv; |
| 2526 | |
| 2527 | intf->bmc->guid_set = 0x2; |
| 2528 | intf->null_user_handler = guid_handler; |
| 2529 | rv = send_guid_cmd(intf, 0); |
| 2530 | if (rv) |
| 2531 | /* Send failed, no GUID available. */ |
| 2532 | intf->bmc->guid_set = 0; |
| 2533 | wait_event(intf->waitq, intf->bmc->guid_set != 2); |
| 2534 | intf->null_user_handler = NULL; |
| 2535 | } |
| 2536 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2537 | static int |
| 2538 | send_channel_info_cmd(ipmi_smi_t intf, int chan) |
| 2539 | { |
| 2540 | struct kernel_ipmi_msg msg; |
| 2541 | unsigned char data[1]; |
| 2542 | struct ipmi_system_interface_addr si; |
| 2543 | |
| 2544 | si.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; |
| 2545 | si.channel = IPMI_BMC_CHANNEL; |
| 2546 | si.lun = 0; |
| 2547 | |
| 2548 | msg.netfn = IPMI_NETFN_APP_REQUEST; |
| 2549 | msg.cmd = IPMI_GET_CHANNEL_INFO_CMD; |
| 2550 | msg.data = data; |
| 2551 | msg.data_len = 1; |
| 2552 | data[0] = chan; |
| 2553 | return i_ipmi_request(NULL, |
| 2554 | intf, |
| 2555 | (struct ipmi_addr *) &si, |
| 2556 | 0, |
| 2557 | &msg, |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 2558 | intf, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2559 | NULL, |
| 2560 | NULL, |
| 2561 | 0, |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 2562 | intf->channels[0].address, |
| 2563 | intf->channels[0].lun, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2564 | -1, 0); |
| 2565 | } |
| 2566 | |
| 2567 | static void |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 2568 | channel_handler(ipmi_smi_t intf, struct ipmi_recv_msg *msg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2569 | { |
| 2570 | int rv = 0; |
| 2571 | int chan; |
| 2572 | |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 2573 | if ((msg->addr.addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) |
| 2574 | && (msg->msg.netfn == IPMI_NETFN_APP_RESPONSE) |
| 2575 | && (msg->msg.cmd == IPMI_GET_CHANNEL_INFO_CMD)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2576 | { |
| 2577 | /* It's the one we want */ |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 2578 | if (msg->msg.data[0] != 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2579 | /* Got an error from the channel, just go on. */ |
| 2580 | |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 2581 | if (msg->msg.data[0] == IPMI_INVALID_COMMAND_ERR) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2582 | /* If the MC does not support this |
| 2583 | command, that is legal. We just |
| 2584 | assume it has one IPMB at channel |
| 2585 | zero. */ |
| 2586 | intf->channels[0].medium |
| 2587 | = IPMI_CHANNEL_MEDIUM_IPMB; |
| 2588 | intf->channels[0].protocol |
| 2589 | = IPMI_CHANNEL_PROTOCOL_IPMB; |
| 2590 | rv = -ENOSYS; |
| 2591 | |
| 2592 | intf->curr_channel = IPMI_MAX_CHANNELS; |
| 2593 | wake_up(&intf->waitq); |
| 2594 | goto out; |
| 2595 | } |
| 2596 | goto next_channel; |
| 2597 | } |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 2598 | if (msg->msg.data_len < 4) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2599 | /* Message not big enough, just go on. */ |
| 2600 | goto next_channel; |
| 2601 | } |
| 2602 | chan = intf->curr_channel; |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 2603 | intf->channels[chan].medium = msg->msg.data[2] & 0x7f; |
| 2604 | intf->channels[chan].protocol = msg->msg.data[3] & 0x1f; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2605 | |
| 2606 | next_channel: |
| 2607 | intf->curr_channel++; |
| 2608 | if (intf->curr_channel >= IPMI_MAX_CHANNELS) |
| 2609 | wake_up(&intf->waitq); |
| 2610 | else |
| 2611 | rv = send_channel_info_cmd(intf, intf->curr_channel); |
| 2612 | |
| 2613 | if (rv) { |
| 2614 | /* Got an error somehow, just give up. */ |
| 2615 | intf->curr_channel = IPMI_MAX_CHANNELS; |
| 2616 | wake_up(&intf->waitq); |
| 2617 | |
| 2618 | printk(KERN_WARNING PFX |
| 2619 | "Error sending channel information: %d\n", |
| 2620 | rv); |
| 2621 | } |
| 2622 | } |
| 2623 | out: |
| 2624 | return; |
| 2625 | } |
| 2626 | |
| 2627 | int ipmi_register_smi(struct ipmi_smi_handlers *handlers, |
| 2628 | void *send_info, |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2629 | struct ipmi_device_id *device_id, |
| 2630 | struct device *si_dev, |
Corey Minyard | 759643b | 2006-12-06 20:40:59 -0800 | [diff] [blame] | 2631 | const char *sysfs_name, |
Corey Minyard | 453823b | 2006-03-31 02:30:39 -0800 | [diff] [blame] | 2632 | unsigned char slave_addr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2633 | { |
| 2634 | int i, j; |
| 2635 | int rv; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2636 | ipmi_smi_t intf; |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 2637 | ipmi_smi_t tintf; |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 2638 | struct list_head *link; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2639 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2640 | /* Make sure the driver is actually initialized, this handles |
| 2641 | problems with initialization order. */ |
| 2642 | if (!initialized) { |
| 2643 | rv = ipmi_init_msghandler(); |
| 2644 | if (rv) |
| 2645 | return rv; |
| 2646 | /* The init code doesn't return an error if it was turned |
| 2647 | off, but it won't initialize. Check that. */ |
| 2648 | if (!initialized) |
| 2649 | return -ENODEV; |
| 2650 | } |
| 2651 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2652 | intf = kmalloc(sizeof(*intf), GFP_KERNEL); |
| 2653 | if (!intf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2654 | return -ENOMEM; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2655 | memset(intf, 0, sizeof(*intf)); |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 2656 | |
| 2657 | intf->ipmi_version_major = ipmi_version_major(device_id); |
| 2658 | intf->ipmi_version_minor = ipmi_version_minor(device_id); |
| 2659 | |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2660 | intf->bmc = kzalloc(sizeof(*intf->bmc), GFP_KERNEL); |
| 2661 | if (!intf->bmc) { |
| 2662 | kfree(intf); |
| 2663 | return -ENOMEM; |
| 2664 | } |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 2665 | intf->intf_num = -1; /* Mark it invalid for now. */ |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2666 | kref_init(&intf->refcount); |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2667 | intf->bmc->id = *device_id; |
| 2668 | intf->si_dev = si_dev; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2669 | for (j = 0; j < IPMI_MAX_CHANNELS; j++) { |
| 2670 | intf->channels[j].address = IPMI_BMC_SLAVE_ADDR; |
| 2671 | intf->channels[j].lun = 2; |
| 2672 | } |
| 2673 | if (slave_addr != 0) |
| 2674 | intf->channels[0].address = slave_addr; |
| 2675 | INIT_LIST_HEAD(&intf->users); |
| 2676 | intf->handlers = handlers; |
| 2677 | intf->send_info = send_info; |
| 2678 | spin_lock_init(&intf->seq_lock); |
| 2679 | for (j = 0; j < IPMI_IPMB_NUM_SEQ; j++) { |
| 2680 | intf->seq_table[j].inuse = 0; |
| 2681 | intf->seq_table[j].seqid = 0; |
| 2682 | } |
| 2683 | intf->curr_seq = 0; |
| 2684 | #ifdef CONFIG_PROC_FS |
| 2685 | spin_lock_init(&intf->proc_entry_lock); |
| 2686 | #endif |
| 2687 | spin_lock_init(&intf->waiting_msgs_lock); |
| 2688 | INIT_LIST_HEAD(&intf->waiting_msgs); |
| 2689 | spin_lock_init(&intf->events_lock); |
| 2690 | INIT_LIST_HEAD(&intf->waiting_events); |
| 2691 | intf->waiting_events_count = 0; |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 2692 | mutex_init(&intf->cmd_rcvrs_mutex); |
Corey Minyard | b967513 | 2006-12-06 20:41:02 -0800 | [diff] [blame] | 2693 | spin_lock_init(&intf->maintenance_mode_lock); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2694 | INIT_LIST_HEAD(&intf->cmd_rcvrs); |
| 2695 | init_waitqueue_head(&intf->waitq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2696 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2697 | spin_lock_init(&intf->counter_lock); |
| 2698 | intf->proc_dir = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2699 | |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 2700 | mutex_lock(&smi_watchers_mutex); |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 2701 | mutex_lock(&ipmi_interfaces_mutex); |
| 2702 | /* Look for a hole in the numbers. */ |
| 2703 | i = 0; |
| 2704 | link = &ipmi_interfaces; |
| 2705 | list_for_each_entry_rcu(tintf, &ipmi_interfaces, link) { |
| 2706 | if (tintf->intf_num != i) { |
| 2707 | link = &tintf->link; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2708 | break; |
| 2709 | } |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 2710 | i++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2711 | } |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 2712 | /* Add the new interface in numeric order. */ |
| 2713 | if (i == 0) |
| 2714 | list_add_rcu(&intf->link, &ipmi_interfaces); |
| 2715 | else |
| 2716 | list_add_tail_rcu(&intf->link, link); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2717 | |
Corey Minyard | 453823b | 2006-03-31 02:30:39 -0800 | [diff] [blame] | 2718 | rv = handlers->start_processing(send_info, intf); |
| 2719 | if (rv) |
| 2720 | goto out; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2721 | |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2722 | get_guid(intf); |
| 2723 | |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 2724 | if ((intf->ipmi_version_major > 1) |
| 2725 | || ((intf->ipmi_version_major == 1) |
| 2726 | && (intf->ipmi_version_minor >= 5))) |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2727 | { |
| 2728 | /* Start scanning the channels to see what is |
| 2729 | available. */ |
| 2730 | intf->null_user_handler = channel_handler; |
| 2731 | intf->curr_channel = 0; |
| 2732 | rv = send_channel_info_cmd(intf, 0); |
| 2733 | if (rv) |
| 2734 | goto out; |
| 2735 | |
| 2736 | /* Wait for the channel info to be read. */ |
| 2737 | wait_event(intf->waitq, |
| 2738 | intf->curr_channel >= IPMI_MAX_CHANNELS); |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2739 | intf->null_user_handler = NULL; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2740 | } else { |
| 2741 | /* Assume a single IPMB channel at zero. */ |
| 2742 | intf->channels[0].medium = IPMI_CHANNEL_MEDIUM_IPMB; |
| 2743 | intf->channels[0].protocol = IPMI_CHANNEL_PROTOCOL_IPMB; |
| 2744 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2745 | |
| 2746 | if (rv == 0) |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2747 | rv = add_proc_entries(intf, i); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2748 | |
Corey Minyard | 759643b | 2006-12-06 20:40:59 -0800 | [diff] [blame] | 2749 | rv = ipmi_bmc_register(intf, i, sysfs_name); |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2750 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2751 | out: |
| 2752 | if (rv) { |
| 2753 | if (intf->proc_dir) |
| 2754 | remove_proc_entries(intf); |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 2755 | intf->handlers = NULL; |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 2756 | list_del_rcu(&intf->link); |
| 2757 | mutex_unlock(&ipmi_interfaces_mutex); |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 2758 | mutex_unlock(&smi_watchers_mutex); |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 2759 | synchronize_rcu(); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2760 | kref_put(&intf->refcount, intf_free); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2761 | } else { |
Corey Minyard | 78ba2fa | 2007-02-10 01:45:45 -0800 | [diff] [blame] | 2762 | /* |
| 2763 | * Keep memory order straight for RCU readers. Make |
| 2764 | * sure everything else is committed to memory before |
| 2765 | * setting intf_num to mark the interface valid. |
| 2766 | */ |
| 2767 | smp_wmb(); |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 2768 | intf->intf_num = i; |
| 2769 | mutex_unlock(&ipmi_interfaces_mutex); |
Corey Minyard | 78ba2fa | 2007-02-10 01:45:45 -0800 | [diff] [blame] | 2770 | /* After this point the interface is legal to use. */ |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2771 | call_smi_watchers(i, intf->si_dev); |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 2772 | mutex_unlock(&smi_watchers_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2773 | } |
| 2774 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2775 | return rv; |
| 2776 | } |
| 2777 | |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 2778 | static void cleanup_smi_msgs(ipmi_smi_t intf) |
| 2779 | { |
| 2780 | int i; |
| 2781 | struct seq_table *ent; |
| 2782 | |
| 2783 | /* No need for locks, the interface is down. */ |
| 2784 | for (i = 0; i < IPMI_IPMB_NUM_SEQ; i++) { |
| 2785 | ent = &(intf->seq_table[i]); |
| 2786 | if (!ent->inuse) |
| 2787 | continue; |
| 2788 | deliver_err_response(ent->recv_msg, IPMI_ERR_UNSPECIFIED); |
| 2789 | } |
| 2790 | } |
| 2791 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2792 | int ipmi_unregister_smi(ipmi_smi_t intf) |
| 2793 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2794 | struct ipmi_smi_watcher *w; |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 2795 | int intf_num = intf->intf_num; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2796 | |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2797 | ipmi_bmc_unregister(intf); |
| 2798 | |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 2799 | mutex_lock(&smi_watchers_mutex); |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 2800 | mutex_lock(&ipmi_interfaces_mutex); |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 2801 | intf->intf_num = -1; |
| 2802 | intf->handlers = NULL; |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 2803 | list_del_rcu(&intf->link); |
| 2804 | mutex_unlock(&ipmi_interfaces_mutex); |
| 2805 | synchronize_rcu(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2806 | |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 2807 | cleanup_smi_msgs(intf); |
| 2808 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2809 | remove_proc_entries(intf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2810 | |
| 2811 | /* Call all the watcher interfaces to tell them that |
| 2812 | an interface is gone. */ |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2813 | list_for_each_entry(w, &smi_watchers, link) |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 2814 | w->smi_gone(intf_num); |
| 2815 | mutex_unlock(&smi_watchers_mutex); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2816 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2817 | kref_put(&intf->refcount, intf_free); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2818 | return 0; |
| 2819 | } |
| 2820 | |
| 2821 | static int handle_ipmb_get_msg_rsp(ipmi_smi_t intf, |
| 2822 | struct ipmi_smi_msg *msg) |
| 2823 | { |
| 2824 | struct ipmi_ipmb_addr ipmb_addr; |
| 2825 | struct ipmi_recv_msg *recv_msg; |
| 2826 | unsigned long flags; |
| 2827 | |
| 2828 | |
| 2829 | /* This is 11, not 10, because the response must contain a |
| 2830 | * completion code. */ |
| 2831 | if (msg->rsp_size < 11) { |
| 2832 | /* Message not big enough, just ignore it. */ |
| 2833 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 2834 | intf->invalid_ipmb_responses++; |
| 2835 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 2836 | return 0; |
| 2837 | } |
| 2838 | |
| 2839 | if (msg->rsp[2] != 0) { |
| 2840 | /* An error getting the response, just ignore it. */ |
| 2841 | return 0; |
| 2842 | } |
| 2843 | |
| 2844 | ipmb_addr.addr_type = IPMI_IPMB_ADDR_TYPE; |
| 2845 | ipmb_addr.slave_addr = msg->rsp[6]; |
| 2846 | ipmb_addr.channel = msg->rsp[3] & 0x0f; |
| 2847 | ipmb_addr.lun = msg->rsp[7] & 3; |
| 2848 | |
| 2849 | /* It's a response from a remote entity. Look up the sequence |
| 2850 | number and handle the response. */ |
| 2851 | if (intf_find_seq(intf, |
| 2852 | msg->rsp[7] >> 2, |
| 2853 | msg->rsp[3] & 0x0f, |
| 2854 | msg->rsp[8], |
| 2855 | (msg->rsp[4] >> 2) & (~1), |
| 2856 | (struct ipmi_addr *) &(ipmb_addr), |
| 2857 | &recv_msg)) |
| 2858 | { |
| 2859 | /* We were unable to find the sequence number, |
| 2860 | so just nuke the message. */ |
| 2861 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 2862 | intf->unhandled_ipmb_responses++; |
| 2863 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 2864 | return 0; |
| 2865 | } |
| 2866 | |
| 2867 | memcpy(recv_msg->msg_data, |
| 2868 | &(msg->rsp[9]), |
| 2869 | msg->rsp_size - 9); |
| 2870 | /* THe other fields matched, so no need to set them, except |
| 2871 | for netfn, which needs to be the response that was |
| 2872 | returned, not the request value. */ |
| 2873 | recv_msg->msg.netfn = msg->rsp[4] >> 2; |
| 2874 | recv_msg->msg.data = recv_msg->msg_data; |
| 2875 | recv_msg->msg.data_len = msg->rsp_size - 10; |
| 2876 | recv_msg->recv_type = IPMI_RESPONSE_RECV_TYPE; |
| 2877 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 2878 | intf->handled_ipmb_responses++; |
| 2879 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 2880 | deliver_response(recv_msg); |
| 2881 | |
| 2882 | return 0; |
| 2883 | } |
| 2884 | |
| 2885 | static int handle_ipmb_get_msg_cmd(ipmi_smi_t intf, |
| 2886 | struct ipmi_smi_msg *msg) |
| 2887 | { |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2888 | struct cmd_rcvr *rcvr; |
| 2889 | int rv = 0; |
| 2890 | unsigned char netfn; |
| 2891 | unsigned char cmd; |
Corey Minyard | c69c312 | 2006-09-30 23:27:56 -0700 | [diff] [blame] | 2892 | unsigned char chan; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2893 | ipmi_user_t user = NULL; |
| 2894 | struct ipmi_ipmb_addr *ipmb_addr; |
| 2895 | struct ipmi_recv_msg *recv_msg; |
| 2896 | unsigned long flags; |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 2897 | struct ipmi_smi_handlers *handlers; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2898 | |
| 2899 | if (msg->rsp_size < 10) { |
| 2900 | /* Message not big enough, just ignore it. */ |
| 2901 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 2902 | intf->invalid_commands++; |
| 2903 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 2904 | return 0; |
| 2905 | } |
| 2906 | |
| 2907 | if (msg->rsp[2] != 0) { |
| 2908 | /* An error getting the response, just ignore it. */ |
| 2909 | return 0; |
| 2910 | } |
| 2911 | |
| 2912 | netfn = msg->rsp[4] >> 2; |
| 2913 | cmd = msg->rsp[8]; |
Corey Minyard | c69c312 | 2006-09-30 23:27:56 -0700 | [diff] [blame] | 2914 | chan = msg->rsp[3] & 0xf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2915 | |
Corey Minyard | e61fb5b | 2005-11-07 01:00:05 -0800 | [diff] [blame] | 2916 | rcu_read_lock(); |
Corey Minyard | c69c312 | 2006-09-30 23:27:56 -0700 | [diff] [blame] | 2917 | rcvr = find_cmd_rcvr(intf, netfn, cmd, chan); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2918 | if (rcvr) { |
| 2919 | user = rcvr->user; |
| 2920 | kref_get(&user->refcount); |
| 2921 | } else |
| 2922 | user = NULL; |
Corey Minyard | e61fb5b | 2005-11-07 01:00:05 -0800 | [diff] [blame] | 2923 | rcu_read_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2924 | |
| 2925 | if (user == NULL) { |
| 2926 | /* We didn't find a user, deliver an error response. */ |
| 2927 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 2928 | intf->unhandled_commands++; |
| 2929 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 2930 | |
| 2931 | msg->data[0] = (IPMI_NETFN_APP_REQUEST << 2); |
| 2932 | msg->data[1] = IPMI_SEND_MSG_CMD; |
| 2933 | msg->data[2] = msg->rsp[3]; |
| 2934 | msg->data[3] = msg->rsp[6]; |
| 2935 | msg->data[4] = ((netfn + 1) << 2) | (msg->rsp[7] & 0x3); |
| 2936 | msg->data[5] = ipmb_checksum(&(msg->data[3]), 2); |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 2937 | msg->data[6] = intf->channels[msg->rsp[3] & 0xf].address; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2938 | /* rqseq/lun */ |
| 2939 | msg->data[7] = (msg->rsp[7] & 0xfc) | (msg->rsp[4] & 0x3); |
| 2940 | msg->data[8] = msg->rsp[8]; /* cmd */ |
| 2941 | msg->data[9] = IPMI_INVALID_CMD_COMPLETION_CODE; |
| 2942 | msg->data[10] = ipmb_checksum(&(msg->data[6]), 4); |
| 2943 | msg->data_size = 11; |
| 2944 | |
| 2945 | #ifdef DEBUG_MSGING |
| 2946 | { |
| 2947 | int m; |
| 2948 | printk("Invalid command:"); |
Corey Minyard | e8b3361 | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 2949 | for (m = 0; m < msg->data_size; m++) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2950 | printk(" %2.2x", msg->data[m]); |
| 2951 | printk("\n"); |
| 2952 | } |
| 2953 | #endif |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 2954 | rcu_read_lock(); |
| 2955 | handlers = intf->handlers; |
| 2956 | if (handlers) { |
| 2957 | handlers->sender(intf->send_info, msg, 0); |
| 2958 | /* We used the message, so return the value |
| 2959 | that causes it to not be freed or |
| 2960 | queued. */ |
| 2961 | rv = -1; |
| 2962 | } |
| 2963 | rcu_read_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2964 | } else { |
| 2965 | /* Deliver the message to the user. */ |
| 2966 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 2967 | intf->handled_commands++; |
| 2968 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 2969 | |
| 2970 | recv_msg = ipmi_alloc_recv_msg(); |
Corey Minyard | 8a3628d | 2006-03-31 02:30:40 -0800 | [diff] [blame] | 2971 | if (!recv_msg) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2972 | /* We couldn't allocate memory for the |
| 2973 | message, so requeue it for handling |
| 2974 | later. */ |
| 2975 | rv = 1; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2976 | kref_put(&user->refcount, free_user); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2977 | } else { |
| 2978 | /* Extract the source address from the data. */ |
| 2979 | ipmb_addr = (struct ipmi_ipmb_addr *) &recv_msg->addr; |
| 2980 | ipmb_addr->addr_type = IPMI_IPMB_ADDR_TYPE; |
| 2981 | ipmb_addr->slave_addr = msg->rsp[6]; |
| 2982 | ipmb_addr->lun = msg->rsp[7] & 3; |
| 2983 | ipmb_addr->channel = msg->rsp[3] & 0xf; |
| 2984 | |
| 2985 | /* Extract the rest of the message information |
| 2986 | from the IPMB header.*/ |
| 2987 | recv_msg->user = user; |
| 2988 | recv_msg->recv_type = IPMI_CMD_RECV_TYPE; |
| 2989 | recv_msg->msgid = msg->rsp[7] >> 2; |
| 2990 | recv_msg->msg.netfn = msg->rsp[4] >> 2; |
| 2991 | recv_msg->msg.cmd = msg->rsp[8]; |
| 2992 | recv_msg->msg.data = recv_msg->msg_data; |
| 2993 | |
| 2994 | /* We chop off 10, not 9 bytes because the checksum |
| 2995 | at the end also needs to be removed. */ |
| 2996 | recv_msg->msg.data_len = msg->rsp_size - 10; |
| 2997 | memcpy(recv_msg->msg_data, |
| 2998 | &(msg->rsp[9]), |
| 2999 | msg->rsp_size - 10); |
| 3000 | deliver_response(recv_msg); |
| 3001 | } |
| 3002 | } |
| 3003 | |
| 3004 | return rv; |
| 3005 | } |
| 3006 | |
| 3007 | static int handle_lan_get_msg_rsp(ipmi_smi_t intf, |
| 3008 | struct ipmi_smi_msg *msg) |
| 3009 | { |
| 3010 | struct ipmi_lan_addr lan_addr; |
| 3011 | struct ipmi_recv_msg *recv_msg; |
| 3012 | unsigned long flags; |
| 3013 | |
| 3014 | |
| 3015 | /* This is 13, not 12, because the response must contain a |
| 3016 | * completion code. */ |
| 3017 | if (msg->rsp_size < 13) { |
| 3018 | /* Message not big enough, just ignore it. */ |
| 3019 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 3020 | intf->invalid_lan_responses++; |
| 3021 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 3022 | return 0; |
| 3023 | } |
| 3024 | |
| 3025 | if (msg->rsp[2] != 0) { |
| 3026 | /* An error getting the response, just ignore it. */ |
| 3027 | return 0; |
| 3028 | } |
| 3029 | |
| 3030 | lan_addr.addr_type = IPMI_LAN_ADDR_TYPE; |
| 3031 | lan_addr.session_handle = msg->rsp[4]; |
| 3032 | lan_addr.remote_SWID = msg->rsp[8]; |
| 3033 | lan_addr.local_SWID = msg->rsp[5]; |
| 3034 | lan_addr.channel = msg->rsp[3] & 0x0f; |
| 3035 | lan_addr.privilege = msg->rsp[3] >> 4; |
| 3036 | lan_addr.lun = msg->rsp[9] & 3; |
| 3037 | |
| 3038 | /* It's a response from a remote entity. Look up the sequence |
| 3039 | number and handle the response. */ |
| 3040 | if (intf_find_seq(intf, |
| 3041 | msg->rsp[9] >> 2, |
| 3042 | msg->rsp[3] & 0x0f, |
| 3043 | msg->rsp[10], |
| 3044 | (msg->rsp[6] >> 2) & (~1), |
| 3045 | (struct ipmi_addr *) &(lan_addr), |
| 3046 | &recv_msg)) |
| 3047 | { |
| 3048 | /* We were unable to find the sequence number, |
| 3049 | so just nuke the message. */ |
| 3050 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 3051 | intf->unhandled_lan_responses++; |
| 3052 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 3053 | return 0; |
| 3054 | } |
| 3055 | |
| 3056 | memcpy(recv_msg->msg_data, |
| 3057 | &(msg->rsp[11]), |
| 3058 | msg->rsp_size - 11); |
| 3059 | /* The other fields matched, so no need to set them, except |
| 3060 | for netfn, which needs to be the response that was |
| 3061 | returned, not the request value. */ |
| 3062 | recv_msg->msg.netfn = msg->rsp[6] >> 2; |
| 3063 | recv_msg->msg.data = recv_msg->msg_data; |
| 3064 | recv_msg->msg.data_len = msg->rsp_size - 12; |
| 3065 | recv_msg->recv_type = IPMI_RESPONSE_RECV_TYPE; |
| 3066 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 3067 | intf->handled_lan_responses++; |
| 3068 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 3069 | deliver_response(recv_msg); |
| 3070 | |
| 3071 | return 0; |
| 3072 | } |
| 3073 | |
| 3074 | static int handle_lan_get_msg_cmd(ipmi_smi_t intf, |
| 3075 | struct ipmi_smi_msg *msg) |
| 3076 | { |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3077 | struct cmd_rcvr *rcvr; |
| 3078 | int rv = 0; |
| 3079 | unsigned char netfn; |
| 3080 | unsigned char cmd; |
Corey Minyard | c69c312 | 2006-09-30 23:27:56 -0700 | [diff] [blame] | 3081 | unsigned char chan; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3082 | ipmi_user_t user = NULL; |
| 3083 | struct ipmi_lan_addr *lan_addr; |
| 3084 | struct ipmi_recv_msg *recv_msg; |
| 3085 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3086 | |
| 3087 | if (msg->rsp_size < 12) { |
| 3088 | /* Message not big enough, just ignore it. */ |
| 3089 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 3090 | intf->invalid_commands++; |
| 3091 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 3092 | return 0; |
| 3093 | } |
| 3094 | |
| 3095 | if (msg->rsp[2] != 0) { |
| 3096 | /* An error getting the response, just ignore it. */ |
| 3097 | return 0; |
| 3098 | } |
| 3099 | |
| 3100 | netfn = msg->rsp[6] >> 2; |
| 3101 | cmd = msg->rsp[10]; |
Corey Minyard | c69c312 | 2006-09-30 23:27:56 -0700 | [diff] [blame] | 3102 | chan = msg->rsp[3] & 0xf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3103 | |
Corey Minyard | e61fb5b | 2005-11-07 01:00:05 -0800 | [diff] [blame] | 3104 | rcu_read_lock(); |
Corey Minyard | c69c312 | 2006-09-30 23:27:56 -0700 | [diff] [blame] | 3105 | rcvr = find_cmd_rcvr(intf, netfn, cmd, chan); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3106 | if (rcvr) { |
| 3107 | user = rcvr->user; |
| 3108 | kref_get(&user->refcount); |
| 3109 | } else |
| 3110 | user = NULL; |
Corey Minyard | e61fb5b | 2005-11-07 01:00:05 -0800 | [diff] [blame] | 3111 | rcu_read_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3112 | |
| 3113 | if (user == NULL) { |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3114 | /* We didn't find a user, just give up. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3115 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 3116 | intf->unhandled_commands++; |
| 3117 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 3118 | |
| 3119 | rv = 0; /* Don't do anything with these messages, just |
| 3120 | allow them to be freed. */ |
| 3121 | } else { |
| 3122 | /* Deliver the message to the user. */ |
| 3123 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 3124 | intf->handled_commands++; |
| 3125 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 3126 | |
| 3127 | recv_msg = ipmi_alloc_recv_msg(); |
Corey Minyard | 8a3628d | 2006-03-31 02:30:40 -0800 | [diff] [blame] | 3128 | if (!recv_msg) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3129 | /* We couldn't allocate memory for the |
| 3130 | message, so requeue it for handling |
| 3131 | later. */ |
| 3132 | rv = 1; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3133 | kref_put(&user->refcount, free_user); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3134 | } else { |
| 3135 | /* Extract the source address from the data. */ |
| 3136 | lan_addr = (struct ipmi_lan_addr *) &recv_msg->addr; |
| 3137 | lan_addr->addr_type = IPMI_LAN_ADDR_TYPE; |
| 3138 | lan_addr->session_handle = msg->rsp[4]; |
| 3139 | lan_addr->remote_SWID = msg->rsp[8]; |
| 3140 | lan_addr->local_SWID = msg->rsp[5]; |
| 3141 | lan_addr->lun = msg->rsp[9] & 3; |
| 3142 | lan_addr->channel = msg->rsp[3] & 0xf; |
| 3143 | lan_addr->privilege = msg->rsp[3] >> 4; |
| 3144 | |
| 3145 | /* Extract the rest of the message information |
| 3146 | from the IPMB header.*/ |
| 3147 | recv_msg->user = user; |
| 3148 | recv_msg->recv_type = IPMI_CMD_RECV_TYPE; |
| 3149 | recv_msg->msgid = msg->rsp[9] >> 2; |
| 3150 | recv_msg->msg.netfn = msg->rsp[6] >> 2; |
| 3151 | recv_msg->msg.cmd = msg->rsp[10]; |
| 3152 | recv_msg->msg.data = recv_msg->msg_data; |
| 3153 | |
| 3154 | /* We chop off 12, not 11 bytes because the checksum |
| 3155 | at the end also needs to be removed. */ |
| 3156 | recv_msg->msg.data_len = msg->rsp_size - 12; |
| 3157 | memcpy(recv_msg->msg_data, |
| 3158 | &(msg->rsp[11]), |
| 3159 | msg->rsp_size - 12); |
| 3160 | deliver_response(recv_msg); |
| 3161 | } |
| 3162 | } |
| 3163 | |
| 3164 | return rv; |
| 3165 | } |
| 3166 | |
| 3167 | static void copy_event_into_recv_msg(struct ipmi_recv_msg *recv_msg, |
| 3168 | struct ipmi_smi_msg *msg) |
| 3169 | { |
| 3170 | struct ipmi_system_interface_addr *smi_addr; |
| 3171 | |
| 3172 | recv_msg->msgid = 0; |
| 3173 | smi_addr = (struct ipmi_system_interface_addr *) &(recv_msg->addr); |
| 3174 | smi_addr->addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; |
| 3175 | smi_addr->channel = IPMI_BMC_CHANNEL; |
| 3176 | smi_addr->lun = msg->rsp[0] & 3; |
| 3177 | recv_msg->recv_type = IPMI_ASYNC_EVENT_RECV_TYPE; |
| 3178 | recv_msg->msg.netfn = msg->rsp[0] >> 2; |
| 3179 | recv_msg->msg.cmd = msg->rsp[1]; |
| 3180 | memcpy(recv_msg->msg_data, &(msg->rsp[3]), msg->rsp_size - 3); |
| 3181 | recv_msg->msg.data = recv_msg->msg_data; |
| 3182 | recv_msg->msg.data_len = msg->rsp_size - 3; |
| 3183 | } |
| 3184 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3185 | static int handle_read_event_rsp(ipmi_smi_t intf, |
| 3186 | struct ipmi_smi_msg *msg) |
| 3187 | { |
| 3188 | struct ipmi_recv_msg *recv_msg, *recv_msg2; |
| 3189 | struct list_head msgs; |
| 3190 | ipmi_user_t user; |
| 3191 | int rv = 0; |
| 3192 | int deliver_count = 0; |
| 3193 | unsigned long flags; |
| 3194 | |
| 3195 | if (msg->rsp_size < 19) { |
| 3196 | /* Message is too small to be an IPMB event. */ |
| 3197 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 3198 | intf->invalid_events++; |
| 3199 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 3200 | return 0; |
| 3201 | } |
| 3202 | |
| 3203 | if (msg->rsp[2] != 0) { |
| 3204 | /* An error getting the event, just ignore it. */ |
| 3205 | return 0; |
| 3206 | } |
| 3207 | |
| 3208 | INIT_LIST_HEAD(&msgs); |
| 3209 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3210 | spin_lock_irqsave(&intf->events_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3211 | |
| 3212 | spin_lock(&intf->counter_lock); |
| 3213 | intf->events++; |
| 3214 | spin_unlock(&intf->counter_lock); |
| 3215 | |
| 3216 | /* Allocate and fill in one message for every user that is getting |
| 3217 | events. */ |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3218 | rcu_read_lock(); |
| 3219 | list_for_each_entry_rcu(user, &intf->users, link) { |
Corey Minyard | 8a3628d | 2006-03-31 02:30:40 -0800 | [diff] [blame] | 3220 | if (!user->gets_events) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3221 | continue; |
| 3222 | |
| 3223 | recv_msg = ipmi_alloc_recv_msg(); |
Corey Minyard | 8a3628d | 2006-03-31 02:30:40 -0800 | [diff] [blame] | 3224 | if (!recv_msg) { |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3225 | rcu_read_unlock(); |
Corey Minyard | 8a3628d | 2006-03-31 02:30:40 -0800 | [diff] [blame] | 3226 | list_for_each_entry_safe(recv_msg, recv_msg2, &msgs, |
| 3227 | link) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3228 | list_del(&recv_msg->link); |
| 3229 | ipmi_free_recv_msg(recv_msg); |
| 3230 | } |
| 3231 | /* We couldn't allocate memory for the |
| 3232 | message, so requeue it for handling |
| 3233 | later. */ |
| 3234 | rv = 1; |
| 3235 | goto out; |
| 3236 | } |
| 3237 | |
| 3238 | deliver_count++; |
| 3239 | |
| 3240 | copy_event_into_recv_msg(recv_msg, msg); |
| 3241 | recv_msg->user = user; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3242 | kref_get(&user->refcount); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3243 | list_add_tail(&(recv_msg->link), &msgs); |
| 3244 | } |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3245 | rcu_read_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3246 | |
| 3247 | if (deliver_count) { |
| 3248 | /* Now deliver all the messages. */ |
| 3249 | list_for_each_entry_safe(recv_msg, recv_msg2, &msgs, link) { |
| 3250 | list_del(&recv_msg->link); |
| 3251 | deliver_response(recv_msg); |
| 3252 | } |
| 3253 | } else if (intf->waiting_events_count < MAX_EVENTS_IN_QUEUE) { |
| 3254 | /* No one to receive the message, put it in queue if there's |
| 3255 | not already too many things in the queue. */ |
| 3256 | recv_msg = ipmi_alloc_recv_msg(); |
Corey Minyard | 8a3628d | 2006-03-31 02:30:40 -0800 | [diff] [blame] | 3257 | if (!recv_msg) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3258 | /* We couldn't allocate memory for the |
| 3259 | message, so requeue it for handling |
| 3260 | later. */ |
| 3261 | rv = 1; |
| 3262 | goto out; |
| 3263 | } |
| 3264 | |
| 3265 | copy_event_into_recv_msg(recv_msg, msg); |
| 3266 | list_add_tail(&(recv_msg->link), &(intf->waiting_events)); |
Corey Minyard | 4791c03 | 2006-04-10 22:54:31 -0700 | [diff] [blame] | 3267 | intf->waiting_events_count++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3268 | } else { |
| 3269 | /* There's too many things in the queue, discard this |
| 3270 | message. */ |
| 3271 | printk(KERN_WARNING PFX "Event queue full, discarding an" |
| 3272 | " incoming event\n"); |
| 3273 | } |
| 3274 | |
| 3275 | out: |
| 3276 | spin_unlock_irqrestore(&(intf->events_lock), flags); |
| 3277 | |
| 3278 | return rv; |
| 3279 | } |
| 3280 | |
| 3281 | static int handle_bmc_rsp(ipmi_smi_t intf, |
| 3282 | struct ipmi_smi_msg *msg) |
| 3283 | { |
| 3284 | struct ipmi_recv_msg *recv_msg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3285 | unsigned long flags; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3286 | struct ipmi_user *user; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3287 | |
| 3288 | recv_msg = (struct ipmi_recv_msg *) msg->user_data; |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 3289 | if (recv_msg == NULL) |
| 3290 | { |
| 3291 | printk(KERN_WARNING"IPMI message received with no owner. This\n" |
| 3292 | "could be because of a malformed message, or\n" |
| 3293 | "because of a hardware error. Contact your\n" |
| 3294 | "hardware vender for assistance\n"); |
| 3295 | return 0; |
| 3296 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3297 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3298 | user = recv_msg->user; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3299 | /* Make sure the user still exists. */ |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3300 | if (user && !user->valid) { |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 3301 | /* The user for the message went away, so give up. */ |
| 3302 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 3303 | intf->unhandled_local_responses++; |
| 3304 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3305 | ipmi_free_recv_msg(recv_msg); |
| 3306 | } else { |
| 3307 | struct ipmi_system_interface_addr *smi_addr; |
| 3308 | |
| 3309 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 3310 | intf->handled_local_responses++; |
| 3311 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 3312 | recv_msg->recv_type = IPMI_RESPONSE_RECV_TYPE; |
| 3313 | recv_msg->msgid = msg->msgid; |
| 3314 | smi_addr = ((struct ipmi_system_interface_addr *) |
| 3315 | &(recv_msg->addr)); |
| 3316 | smi_addr->addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; |
| 3317 | smi_addr->channel = IPMI_BMC_CHANNEL; |
| 3318 | smi_addr->lun = msg->rsp[0] & 3; |
| 3319 | recv_msg->msg.netfn = msg->rsp[0] >> 2; |
| 3320 | recv_msg->msg.cmd = msg->rsp[1]; |
| 3321 | memcpy(recv_msg->msg_data, |
| 3322 | &(msg->rsp[2]), |
| 3323 | msg->rsp_size - 2); |
| 3324 | recv_msg->msg.data = recv_msg->msg_data; |
| 3325 | recv_msg->msg.data_len = msg->rsp_size - 2; |
| 3326 | deliver_response(recv_msg); |
| 3327 | } |
| 3328 | |
| 3329 | return 0; |
| 3330 | } |
| 3331 | |
| 3332 | /* Handle a new message. Return 1 if the message should be requeued, |
| 3333 | 0 if the message should be freed, or -1 if the message should not |
| 3334 | be freed or requeued. */ |
| 3335 | static int handle_new_recv_msg(ipmi_smi_t intf, |
| 3336 | struct ipmi_smi_msg *msg) |
| 3337 | { |
| 3338 | int requeue; |
| 3339 | int chan; |
| 3340 | |
| 3341 | #ifdef DEBUG_MSGING |
| 3342 | int m; |
| 3343 | printk("Recv:"); |
Corey Minyard | e8b3361 | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 3344 | for (m = 0; m < msg->rsp_size; m++) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3345 | printk(" %2.2x", msg->rsp[m]); |
| 3346 | printk("\n"); |
| 3347 | #endif |
| 3348 | if (msg->rsp_size < 2) { |
| 3349 | /* Message is too small to be correct. */ |
| 3350 | printk(KERN_WARNING PFX "BMC returned to small a message" |
| 3351 | " for netfn %x cmd %x, got %d bytes\n", |
| 3352 | (msg->data[0] >> 2) | 1, msg->data[1], msg->rsp_size); |
| 3353 | |
| 3354 | /* Generate an error response for the message. */ |
| 3355 | msg->rsp[0] = msg->data[0] | (1 << 2); |
| 3356 | msg->rsp[1] = msg->data[1]; |
| 3357 | msg->rsp[2] = IPMI_ERR_UNSPECIFIED; |
| 3358 | msg->rsp_size = 3; |
| 3359 | } else if (((msg->rsp[0] >> 2) != ((msg->data[0] >> 2) | 1))/* Netfn */ |
| 3360 | || (msg->rsp[1] != msg->data[1])) /* Command */ |
| 3361 | { |
| 3362 | /* The response is not even marginally correct. */ |
| 3363 | printk(KERN_WARNING PFX "BMC returned incorrect response," |
| 3364 | " expected netfn %x cmd %x, got netfn %x cmd %x\n", |
| 3365 | (msg->data[0] >> 2) | 1, msg->data[1], |
| 3366 | msg->rsp[0] >> 2, msg->rsp[1]); |
| 3367 | |
| 3368 | /* Generate an error response for the message. */ |
| 3369 | msg->rsp[0] = msg->data[0] | (1 << 2); |
| 3370 | msg->rsp[1] = msg->data[1]; |
| 3371 | msg->rsp[2] = IPMI_ERR_UNSPECIFIED; |
| 3372 | msg->rsp_size = 3; |
| 3373 | } |
| 3374 | |
| 3375 | if ((msg->rsp[0] == ((IPMI_NETFN_APP_REQUEST|1) << 2)) |
| 3376 | && (msg->rsp[1] == IPMI_SEND_MSG_CMD) |
| 3377 | && (msg->user_data != NULL)) |
| 3378 | { |
| 3379 | /* It's a response to a response we sent. For this we |
| 3380 | deliver a send message response to the user. */ |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3381 | struct ipmi_recv_msg *recv_msg = msg->user_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3382 | |
| 3383 | requeue = 0; |
| 3384 | if (msg->rsp_size < 2) |
| 3385 | /* Message is too small to be correct. */ |
| 3386 | goto out; |
| 3387 | |
| 3388 | chan = msg->data[2] & 0x0f; |
| 3389 | if (chan >= IPMI_MAX_CHANNELS) |
| 3390 | /* Invalid channel number */ |
| 3391 | goto out; |
| 3392 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3393 | if (!recv_msg) |
| 3394 | goto out; |
| 3395 | |
| 3396 | /* Make sure the user still exists. */ |
| 3397 | if (!recv_msg->user || !recv_msg->user->valid) |
| 3398 | goto out; |
| 3399 | |
| 3400 | recv_msg->recv_type = IPMI_RESPONSE_RESPONSE_TYPE; |
| 3401 | recv_msg->msg.data = recv_msg->msg_data; |
| 3402 | recv_msg->msg.data_len = 1; |
| 3403 | recv_msg->msg_data[0] = msg->rsp[2]; |
| 3404 | deliver_response(recv_msg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3405 | } else if ((msg->rsp[0] == ((IPMI_NETFN_APP_REQUEST|1) << 2)) |
| 3406 | && (msg->rsp[1] == IPMI_GET_MSG_CMD)) |
| 3407 | { |
| 3408 | /* It's from the receive queue. */ |
| 3409 | chan = msg->rsp[3] & 0xf; |
| 3410 | if (chan >= IPMI_MAX_CHANNELS) { |
| 3411 | /* Invalid channel number */ |
| 3412 | requeue = 0; |
| 3413 | goto out; |
| 3414 | } |
| 3415 | |
| 3416 | switch (intf->channels[chan].medium) { |
| 3417 | case IPMI_CHANNEL_MEDIUM_IPMB: |
| 3418 | if (msg->rsp[4] & 0x04) { |
| 3419 | /* It's a response, so find the |
| 3420 | requesting message and send it up. */ |
| 3421 | requeue = handle_ipmb_get_msg_rsp(intf, msg); |
| 3422 | } else { |
| 3423 | /* It's a command to the SMS from some other |
| 3424 | entity. Handle that. */ |
| 3425 | requeue = handle_ipmb_get_msg_cmd(intf, msg); |
| 3426 | } |
| 3427 | break; |
| 3428 | |
| 3429 | case IPMI_CHANNEL_MEDIUM_8023LAN: |
| 3430 | case IPMI_CHANNEL_MEDIUM_ASYNC: |
| 3431 | if (msg->rsp[6] & 0x04) { |
| 3432 | /* It's a response, so find the |
| 3433 | requesting message and send it up. */ |
| 3434 | requeue = handle_lan_get_msg_rsp(intf, msg); |
| 3435 | } else { |
| 3436 | /* It's a command to the SMS from some other |
| 3437 | entity. Handle that. */ |
| 3438 | requeue = handle_lan_get_msg_cmd(intf, msg); |
| 3439 | } |
| 3440 | break; |
| 3441 | |
| 3442 | default: |
| 3443 | /* We don't handle the channel type, so just |
| 3444 | * free the message. */ |
| 3445 | requeue = 0; |
| 3446 | } |
| 3447 | |
| 3448 | } else if ((msg->rsp[0] == ((IPMI_NETFN_APP_REQUEST|1) << 2)) |
| 3449 | && (msg->rsp[1] == IPMI_READ_EVENT_MSG_BUFFER_CMD)) |
| 3450 | { |
| 3451 | /* It's an asyncronous event. */ |
| 3452 | requeue = handle_read_event_rsp(intf, msg); |
| 3453 | } else { |
| 3454 | /* It's a response from the local BMC. */ |
| 3455 | requeue = handle_bmc_rsp(intf, msg); |
| 3456 | } |
| 3457 | |
| 3458 | out: |
| 3459 | return requeue; |
| 3460 | } |
| 3461 | |
| 3462 | /* Handle a new message from the lower layer. */ |
| 3463 | void ipmi_smi_msg_received(ipmi_smi_t intf, |
| 3464 | struct ipmi_smi_msg *msg) |
| 3465 | { |
| 3466 | unsigned long flags; |
| 3467 | int rv; |
| 3468 | |
| 3469 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3470 | if ((msg->data_size >= 2) |
| 3471 | && (msg->data[0] == (IPMI_NETFN_APP_REQUEST << 2)) |
| 3472 | && (msg->data[1] == IPMI_SEND_MSG_CMD) |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3473 | && (msg->user_data == NULL)) |
| 3474 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3475 | /* This is the local response to a command send, start |
| 3476 | the timer for these. The user_data will not be |
| 3477 | NULL if this is a response send, and we will let |
| 3478 | response sends just go through. */ |
| 3479 | |
| 3480 | /* Check for errors, if we get certain errors (ones |
| 3481 | that mean basically we can try again later), we |
| 3482 | ignore them and start the timer. Otherwise we |
| 3483 | report the error immediately. */ |
| 3484 | if ((msg->rsp_size >= 3) && (msg->rsp[2] != 0) |
| 3485 | && (msg->rsp[2] != IPMI_NODE_BUSY_ERR) |
Corey Minyard | 46d52b0 | 2006-11-08 17:44:55 -0800 | [diff] [blame] | 3486 | && (msg->rsp[2] != IPMI_LOST_ARBITRATION_ERR) |
| 3487 | && (msg->rsp[2] != IPMI_BUS_ERR) |
| 3488 | && (msg->rsp[2] != IPMI_NAK_ON_WRITE_ERR)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3489 | { |
| 3490 | int chan = msg->rsp[3] & 0xf; |
| 3491 | |
| 3492 | /* Got an error sending the message, handle it. */ |
| 3493 | spin_lock_irqsave(&intf->counter_lock, flags); |
| 3494 | if (chan >= IPMI_MAX_CHANNELS) |
| 3495 | ; /* This shouldn't happen */ |
| 3496 | else if ((intf->channels[chan].medium |
| 3497 | == IPMI_CHANNEL_MEDIUM_8023LAN) |
| 3498 | || (intf->channels[chan].medium |
| 3499 | == IPMI_CHANNEL_MEDIUM_ASYNC)) |
| 3500 | intf->sent_lan_command_errs++; |
| 3501 | else |
| 3502 | intf->sent_ipmb_command_errs++; |
| 3503 | spin_unlock_irqrestore(&intf->counter_lock, flags); |
| 3504 | intf_err_seq(intf, msg->msgid, msg->rsp[2]); |
| 3505 | } else { |
| 3506 | /* The message was sent, start the timer. */ |
| 3507 | intf_start_seq_timer(intf, msg->msgid); |
| 3508 | } |
| 3509 | |
| 3510 | ipmi_free_smi_msg(msg); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3511 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3512 | } |
| 3513 | |
| 3514 | /* To preserve message order, if the list is not empty, we |
| 3515 | tack this message onto the end of the list. */ |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3516 | spin_lock_irqsave(&intf->waiting_msgs_lock, flags); |
| 3517 | if (!list_empty(&intf->waiting_msgs)) { |
| 3518 | list_add_tail(&msg->link, &intf->waiting_msgs); |
Hironobu Ishii | 177294d | 2005-11-11 08:12:21 -0600 | [diff] [blame] | 3519 | spin_unlock_irqrestore(&intf->waiting_msgs_lock, flags); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3520 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3521 | } |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3522 | spin_unlock_irqrestore(&intf->waiting_msgs_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3523 | |
| 3524 | rv = handle_new_recv_msg(intf, msg); |
| 3525 | if (rv > 0) { |
| 3526 | /* Could not handle the message now, just add it to a |
| 3527 | list to handle later. */ |
Hironobu Ishii | 177294d | 2005-11-11 08:12:21 -0600 | [diff] [blame] | 3528 | spin_lock_irqsave(&intf->waiting_msgs_lock, flags); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3529 | list_add_tail(&msg->link, &intf->waiting_msgs); |
Hironobu Ishii | 177294d | 2005-11-11 08:12:21 -0600 | [diff] [blame] | 3530 | spin_unlock_irqrestore(&intf->waiting_msgs_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3531 | } else if (rv == 0) { |
| 3532 | ipmi_free_smi_msg(msg); |
| 3533 | } |
| 3534 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3535 | out: |
| 3536 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3537 | } |
| 3538 | |
| 3539 | void ipmi_smi_watchdog_pretimeout(ipmi_smi_t intf) |
| 3540 | { |
| 3541 | ipmi_user_t user; |
| 3542 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3543 | rcu_read_lock(); |
| 3544 | list_for_each_entry_rcu(user, &intf->users, link) { |
Corey Minyard | 8a3628d | 2006-03-31 02:30:40 -0800 | [diff] [blame] | 3545 | if (!user->handler->ipmi_watchdog_pretimeout) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3546 | continue; |
| 3547 | |
| 3548 | user->handler->ipmi_watchdog_pretimeout(user->handler_data); |
| 3549 | } |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3550 | rcu_read_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3551 | } |
| 3552 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3553 | |
Corey Minyard | 882fe01 | 2005-05-01 08:59:12 -0700 | [diff] [blame] | 3554 | static struct ipmi_smi_msg * |
| 3555 | smi_from_recv_msg(ipmi_smi_t intf, struct ipmi_recv_msg *recv_msg, |
| 3556 | unsigned char seq, long seqid) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3557 | { |
Corey Minyard | 882fe01 | 2005-05-01 08:59:12 -0700 | [diff] [blame] | 3558 | struct ipmi_smi_msg *smi_msg = ipmi_alloc_smi_msg(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3559 | if (!smi_msg) |
| 3560 | /* If we can't allocate the message, then just return, we |
| 3561 | get 4 retries, so this should be ok. */ |
Corey Minyard | 882fe01 | 2005-05-01 08:59:12 -0700 | [diff] [blame] | 3562 | return NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3563 | |
| 3564 | memcpy(smi_msg->data, recv_msg->msg.data, recv_msg->msg.data_len); |
| 3565 | smi_msg->data_size = recv_msg->msg.data_len; |
| 3566 | smi_msg->msgid = STORE_SEQ_IN_MSGID(seq, seqid); |
| 3567 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3568 | #ifdef DEBUG_MSGING |
| 3569 | { |
| 3570 | int m; |
| 3571 | printk("Resend: "); |
Corey Minyard | e8b3361 | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 3572 | for (m = 0; m < smi_msg->data_size; m++) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3573 | printk(" %2.2x", smi_msg->data[m]); |
| 3574 | printk("\n"); |
| 3575 | } |
| 3576 | #endif |
Corey Minyard | 882fe01 | 2005-05-01 08:59:12 -0700 | [diff] [blame] | 3577 | return smi_msg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3578 | } |
| 3579 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3580 | static void check_msg_timeout(ipmi_smi_t intf, struct seq_table *ent, |
| 3581 | struct list_head *timeouts, long timeout_period, |
| 3582 | int slot, unsigned long *flags) |
| 3583 | { |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 3584 | struct ipmi_recv_msg *msg; |
| 3585 | struct ipmi_smi_handlers *handlers; |
| 3586 | |
| 3587 | if (intf->intf_num == -1) |
| 3588 | return; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3589 | |
| 3590 | if (!ent->inuse) |
| 3591 | return; |
| 3592 | |
| 3593 | ent->timeout -= timeout_period; |
| 3594 | if (ent->timeout > 0) |
| 3595 | return; |
| 3596 | |
| 3597 | if (ent->retries_left == 0) { |
| 3598 | /* The message has used all its retries. */ |
| 3599 | ent->inuse = 0; |
| 3600 | msg = ent->recv_msg; |
| 3601 | list_add_tail(&msg->link, timeouts); |
| 3602 | spin_lock(&intf->counter_lock); |
| 3603 | if (ent->broadcast) |
| 3604 | intf->timed_out_ipmb_broadcasts++; |
| 3605 | else if (ent->recv_msg->addr.addr_type == IPMI_LAN_ADDR_TYPE) |
| 3606 | intf->timed_out_lan_commands++; |
| 3607 | else |
| 3608 | intf->timed_out_ipmb_commands++; |
| 3609 | spin_unlock(&intf->counter_lock); |
| 3610 | } else { |
| 3611 | struct ipmi_smi_msg *smi_msg; |
| 3612 | /* More retries, send again. */ |
| 3613 | |
| 3614 | /* Start with the max timer, set to normal |
| 3615 | timer after the message is sent. */ |
| 3616 | ent->timeout = MAX_MSG_TIMEOUT; |
| 3617 | ent->retries_left--; |
| 3618 | spin_lock(&intf->counter_lock); |
| 3619 | if (ent->recv_msg->addr.addr_type == IPMI_LAN_ADDR_TYPE) |
| 3620 | intf->retransmitted_lan_commands++; |
| 3621 | else |
| 3622 | intf->retransmitted_ipmb_commands++; |
| 3623 | spin_unlock(&intf->counter_lock); |
| 3624 | |
| 3625 | smi_msg = smi_from_recv_msg(intf, ent->recv_msg, slot, |
| 3626 | ent->seqid); |
Corey Minyard | 8a3628d | 2006-03-31 02:30:40 -0800 | [diff] [blame] | 3627 | if (!smi_msg) |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3628 | return; |
| 3629 | |
| 3630 | spin_unlock_irqrestore(&intf->seq_lock, *flags); |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 3631 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3632 | /* Send the new message. We send with a zero |
| 3633 | * priority. It timed out, I doubt time is |
| 3634 | * that critical now, and high priority |
| 3635 | * messages are really only for messages to the |
| 3636 | * local MC, which don't get resent. */ |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 3637 | handlers = intf->handlers; |
| 3638 | if (handlers) |
| 3639 | intf->handlers->sender(intf->send_info, |
| 3640 | smi_msg, 0); |
| 3641 | else |
| 3642 | ipmi_free_smi_msg(smi_msg); |
| 3643 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3644 | spin_lock_irqsave(&intf->seq_lock, *flags); |
| 3645 | } |
| 3646 | } |
| 3647 | |
| 3648 | static void ipmi_timeout_handler(long timeout_period) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3649 | { |
| 3650 | ipmi_smi_t intf; |
| 3651 | struct list_head timeouts; |
| 3652 | struct ipmi_recv_msg *msg, *msg2; |
| 3653 | struct ipmi_smi_msg *smi_msg, *smi_msg2; |
| 3654 | unsigned long flags; |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 3655 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3656 | |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 3657 | rcu_read_lock(); |
| 3658 | list_for_each_entry_rcu(intf, &ipmi_interfaces, link) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3659 | /* See if any waiting messages need to be processed. */ |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3660 | spin_lock_irqsave(&intf->waiting_msgs_lock, flags); |
Corey Minyard | 8a3628d | 2006-03-31 02:30:40 -0800 | [diff] [blame] | 3661 | list_for_each_entry_safe(smi_msg, smi_msg2, |
| 3662 | &intf->waiting_msgs, link) { |
| 3663 | if (!handle_new_recv_msg(intf, smi_msg)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3664 | list_del(&smi_msg->link); |
| 3665 | ipmi_free_smi_msg(smi_msg); |
| 3666 | } else { |
| 3667 | /* To preserve message order, quit if we |
| 3668 | can't handle a message. */ |
| 3669 | break; |
| 3670 | } |
| 3671 | } |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3672 | spin_unlock_irqrestore(&intf->waiting_msgs_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3673 | |
| 3674 | /* Go through the seq table and find any messages that |
| 3675 | have timed out, putting them in the timeouts |
| 3676 | list. */ |
David Barksdale | 41c57a8 | 2007-01-30 14:36:25 -0800 | [diff] [blame] | 3677 | INIT_LIST_HEAD(&timeouts); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3678 | spin_lock_irqsave(&intf->seq_lock, flags); |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 3679 | for (i = 0; i < IPMI_IPMB_NUM_SEQ; i++) |
| 3680 | check_msg_timeout(intf, &(intf->seq_table[i]), |
| 3681 | &timeouts, timeout_period, i, |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3682 | &flags); |
| 3683 | spin_unlock_irqrestore(&intf->seq_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3684 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3685 | list_for_each_entry_safe(msg, msg2, &timeouts, link) |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 3686 | deliver_err_response(msg, IPMI_TIMEOUT_COMPLETION_CODE); |
Corey Minyard | b967513 | 2006-12-06 20:41:02 -0800 | [diff] [blame] | 3687 | |
| 3688 | /* |
| 3689 | * Maintenance mode handling. Check the timeout |
| 3690 | * optimistically before we claim the lock. It may |
| 3691 | * mean a timeout gets missed occasionally, but that |
| 3692 | * only means the timeout gets extended by one period |
| 3693 | * in that case. No big deal, and it avoids the lock |
| 3694 | * most of the time. |
| 3695 | */ |
| 3696 | if (intf->auto_maintenance_timeout > 0) { |
| 3697 | spin_lock_irqsave(&intf->maintenance_mode_lock, flags); |
| 3698 | if (intf->auto_maintenance_timeout > 0) { |
| 3699 | intf->auto_maintenance_timeout |
| 3700 | -= timeout_period; |
| 3701 | if (!intf->maintenance_mode |
| 3702 | && (intf->auto_maintenance_timeout <= 0)) |
| 3703 | { |
| 3704 | intf->maintenance_mode_enable = 0; |
| 3705 | maintenance_mode_update(intf); |
| 3706 | } |
| 3707 | } |
| 3708 | spin_unlock_irqrestore(&intf->maintenance_mode_lock, |
| 3709 | flags); |
| 3710 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3711 | } |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 3712 | rcu_read_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3713 | } |
| 3714 | |
| 3715 | static void ipmi_request_event(void) |
| 3716 | { |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 3717 | ipmi_smi_t intf; |
| 3718 | struct ipmi_smi_handlers *handlers; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3719 | |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 3720 | rcu_read_lock(); |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 3721 | /* Called from the timer, no need to check if handlers is |
| 3722 | * valid. */ |
| 3723 | list_for_each_entry_rcu(intf, &ipmi_interfaces, link) { |
Corey Minyard | b967513 | 2006-12-06 20:41:02 -0800 | [diff] [blame] | 3724 | /* No event requests when in maintenance mode. */ |
| 3725 | if (intf->maintenance_mode_enable) |
| 3726 | continue; |
| 3727 | |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 3728 | handlers = intf->handlers; |
| 3729 | if (handlers) |
| 3730 | handlers->request_events(intf->send_info); |
| 3731 | } |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 3732 | rcu_read_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3733 | } |
| 3734 | |
| 3735 | static struct timer_list ipmi_timer; |
| 3736 | |
| 3737 | /* Call every ~100 ms. */ |
| 3738 | #define IPMI_TIMEOUT_TIME 100 |
| 3739 | |
| 3740 | /* How many jiffies does it take to get to the timeout time. */ |
| 3741 | #define IPMI_TIMEOUT_JIFFIES ((IPMI_TIMEOUT_TIME * HZ) / 1000) |
| 3742 | |
| 3743 | /* Request events from the queue every second (this is the number of |
| 3744 | IPMI_TIMEOUT_TIMES between event requests). Hopefully, in the |
| 3745 | future, IPMI will add a way to know immediately if an event is in |
| 3746 | the queue and this silliness can go away. */ |
| 3747 | #define IPMI_REQUEST_EV_TIME (1000 / (IPMI_TIMEOUT_TIME)) |
| 3748 | |
Corey Minyard | 8f43f84 | 2005-06-23 22:01:40 -0700 | [diff] [blame] | 3749 | static atomic_t stop_operation; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3750 | static unsigned int ticks_to_req_ev = IPMI_REQUEST_EV_TIME; |
| 3751 | |
| 3752 | static void ipmi_timeout(unsigned long data) |
| 3753 | { |
Corey Minyard | 8f43f84 | 2005-06-23 22:01:40 -0700 | [diff] [blame] | 3754 | if (atomic_read(&stop_operation)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3755 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3756 | |
| 3757 | ticks_to_req_ev--; |
| 3758 | if (ticks_to_req_ev == 0) { |
| 3759 | ipmi_request_event(); |
| 3760 | ticks_to_req_ev = IPMI_REQUEST_EV_TIME; |
| 3761 | } |
| 3762 | |
| 3763 | ipmi_timeout_handler(IPMI_TIMEOUT_TIME); |
| 3764 | |
Corey Minyard | 8f43f84 | 2005-06-23 22:01:40 -0700 | [diff] [blame] | 3765 | mod_timer(&ipmi_timer, jiffies + IPMI_TIMEOUT_JIFFIES); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3766 | } |
| 3767 | |
| 3768 | |
| 3769 | static atomic_t smi_msg_inuse_count = ATOMIC_INIT(0); |
| 3770 | static atomic_t recv_msg_inuse_count = ATOMIC_INIT(0); |
| 3771 | |
| 3772 | /* FIXME - convert these to slabs. */ |
| 3773 | static void free_smi_msg(struct ipmi_smi_msg *msg) |
| 3774 | { |
| 3775 | atomic_dec(&smi_msg_inuse_count); |
| 3776 | kfree(msg); |
| 3777 | } |
| 3778 | |
| 3779 | struct ipmi_smi_msg *ipmi_alloc_smi_msg(void) |
| 3780 | { |
| 3781 | struct ipmi_smi_msg *rv; |
| 3782 | rv = kmalloc(sizeof(struct ipmi_smi_msg), GFP_ATOMIC); |
| 3783 | if (rv) { |
| 3784 | rv->done = free_smi_msg; |
| 3785 | rv->user_data = NULL; |
| 3786 | atomic_inc(&smi_msg_inuse_count); |
| 3787 | } |
| 3788 | return rv; |
| 3789 | } |
| 3790 | |
| 3791 | static void free_recv_msg(struct ipmi_recv_msg *msg) |
| 3792 | { |
| 3793 | atomic_dec(&recv_msg_inuse_count); |
| 3794 | kfree(msg); |
| 3795 | } |
| 3796 | |
| 3797 | struct ipmi_recv_msg *ipmi_alloc_recv_msg(void) |
| 3798 | { |
| 3799 | struct ipmi_recv_msg *rv; |
| 3800 | |
| 3801 | rv = kmalloc(sizeof(struct ipmi_recv_msg), GFP_ATOMIC); |
| 3802 | if (rv) { |
Corey Minyard | a9eec55 | 2006-08-31 21:27:45 -0700 | [diff] [blame] | 3803 | rv->user = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3804 | rv->done = free_recv_msg; |
| 3805 | atomic_inc(&recv_msg_inuse_count); |
| 3806 | } |
| 3807 | return rv; |
| 3808 | } |
| 3809 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3810 | void ipmi_free_recv_msg(struct ipmi_recv_msg *msg) |
| 3811 | { |
| 3812 | if (msg->user) |
| 3813 | kref_put(&msg->user->refcount, free_user); |
| 3814 | msg->done(msg); |
| 3815 | } |
| 3816 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3817 | #ifdef CONFIG_IPMI_PANIC_EVENT |
| 3818 | |
| 3819 | static void dummy_smi_done_handler(struct ipmi_smi_msg *msg) |
| 3820 | { |
| 3821 | } |
| 3822 | |
| 3823 | static void dummy_recv_done_handler(struct ipmi_recv_msg *msg) |
| 3824 | { |
| 3825 | } |
| 3826 | |
| 3827 | #ifdef CONFIG_IPMI_PANIC_STRING |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 3828 | 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] | 3829 | { |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 3830 | if ((msg->addr.addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) |
| 3831 | && (msg->msg.netfn == IPMI_NETFN_SENSOR_EVENT_RESPONSE) |
| 3832 | && (msg->msg.cmd == IPMI_GET_EVENT_RECEIVER_CMD) |
| 3833 | && (msg->msg.data[0] == IPMI_CC_NO_ERROR)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3834 | { |
| 3835 | /* A get event receiver command, save it. */ |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 3836 | intf->event_receiver = msg->msg.data[1]; |
| 3837 | intf->event_receiver_lun = msg->msg.data[2] & 0x3; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3838 | } |
| 3839 | } |
| 3840 | |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 3841 | 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] | 3842 | { |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 3843 | if ((msg->addr.addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) |
| 3844 | && (msg->msg.netfn == IPMI_NETFN_APP_RESPONSE) |
| 3845 | && (msg->msg.cmd == IPMI_GET_DEVICE_ID_CMD) |
| 3846 | && (msg->msg.data[0] == IPMI_CC_NO_ERROR)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3847 | { |
| 3848 | /* A get device id command, save if we are an event |
| 3849 | receiver or generator. */ |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 3850 | intf->local_sel_device = (msg->msg.data[6] >> 2) & 1; |
| 3851 | intf->local_event_generator = (msg->msg.data[6] >> 5) & 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3852 | } |
| 3853 | } |
| 3854 | #endif |
| 3855 | |
| 3856 | static void send_panic_events(char *str) |
| 3857 | { |
| 3858 | struct kernel_ipmi_msg msg; |
| 3859 | ipmi_smi_t intf; |
| 3860 | unsigned char data[16]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3861 | struct ipmi_system_interface_addr *si; |
| 3862 | struct ipmi_addr addr; |
| 3863 | struct ipmi_smi_msg smi_msg; |
| 3864 | struct ipmi_recv_msg recv_msg; |
| 3865 | |
| 3866 | si = (struct ipmi_system_interface_addr *) &addr; |
| 3867 | si->addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; |
| 3868 | si->channel = IPMI_BMC_CHANNEL; |
| 3869 | si->lun = 0; |
| 3870 | |
| 3871 | /* Fill in an event telling that we have failed. */ |
| 3872 | msg.netfn = 0x04; /* Sensor or Event. */ |
| 3873 | msg.cmd = 2; /* Platform event command. */ |
| 3874 | msg.data = data; |
| 3875 | msg.data_len = 8; |
Matt Domsch | cda315a | 2005-12-12 00:37:32 -0800 | [diff] [blame] | 3876 | data[0] = 0x41; /* Kernel generator ID, IPMI table 5-4 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3877 | data[1] = 0x03; /* This is for IPMI 1.0. */ |
| 3878 | data[2] = 0x20; /* OS Critical Stop, IPMI table 36-3 */ |
| 3879 | data[4] = 0x6f; /* Sensor specific, IPMI table 36-1 */ |
| 3880 | data[5] = 0xa1; /* Runtime stop OEM bytes 2 & 3. */ |
| 3881 | |
| 3882 | /* Put a few breadcrumbs in. Hopefully later we can add more things |
| 3883 | to make the panic events more useful. */ |
| 3884 | if (str) { |
| 3885 | data[3] = str[0]; |
| 3886 | data[6] = str[1]; |
| 3887 | data[7] = str[2]; |
| 3888 | } |
| 3889 | |
| 3890 | smi_msg.done = dummy_smi_done_handler; |
| 3891 | recv_msg.done = dummy_recv_done_handler; |
| 3892 | |
| 3893 | /* For every registered interface, send the event. */ |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 3894 | list_for_each_entry_rcu(intf, &ipmi_interfaces, link) { |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 3895 | if (!intf->handlers) |
| 3896 | /* Interface is not ready. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3897 | continue; |
| 3898 | |
| 3899 | /* Send the event announcing the panic. */ |
| 3900 | intf->handlers->set_run_to_completion(intf->send_info, 1); |
| 3901 | i_ipmi_request(NULL, |
| 3902 | intf, |
| 3903 | &addr, |
| 3904 | 0, |
| 3905 | &msg, |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 3906 | intf, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3907 | &smi_msg, |
| 3908 | &recv_msg, |
| 3909 | 0, |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 3910 | intf->channels[0].address, |
| 3911 | intf->channels[0].lun, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3912 | 0, 1); /* Don't retry, and don't wait. */ |
| 3913 | } |
| 3914 | |
| 3915 | #ifdef CONFIG_IPMI_PANIC_STRING |
| 3916 | /* On every interface, dump a bunch of OEM event holding the |
| 3917 | string. */ |
| 3918 | if (!str) |
| 3919 | return; |
| 3920 | |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 3921 | /* For every registered interface, send the event. */ |
| 3922 | list_for_each_entry_rcu(intf, &ipmi_interfaces, link) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3923 | char *p = str; |
| 3924 | struct ipmi_ipmb_addr *ipmb; |
| 3925 | int j; |
| 3926 | |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 3927 | if (intf->intf_num == -1) |
| 3928 | /* Interface was not ready yet. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3929 | continue; |
| 3930 | |
Corey Minyard | 78ba2fa | 2007-02-10 01:45:45 -0800 | [diff] [blame] | 3931 | /* |
| 3932 | * intf_num is used as an marker to tell if the |
| 3933 | * interface is valid. Thus we need a read barrier to |
| 3934 | * make sure data fetched before checking intf_num |
| 3935 | * won't be used. |
| 3936 | */ |
| 3937 | smp_rmb(); |
| 3938 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3939 | /* First job here is to figure out where to send the |
| 3940 | OEM events. There's no way in IPMI to send OEM |
| 3941 | events using an event send command, so we have to |
| 3942 | find the SEL to put them in and stick them in |
| 3943 | there. */ |
| 3944 | |
| 3945 | /* Get capabilities from the get device id. */ |
| 3946 | intf->local_sel_device = 0; |
| 3947 | intf->local_event_generator = 0; |
| 3948 | intf->event_receiver = 0; |
| 3949 | |
| 3950 | /* Request the device info from the local MC. */ |
| 3951 | msg.netfn = IPMI_NETFN_APP_REQUEST; |
| 3952 | msg.cmd = IPMI_GET_DEVICE_ID_CMD; |
| 3953 | msg.data = NULL; |
| 3954 | msg.data_len = 0; |
| 3955 | intf->null_user_handler = device_id_fetcher; |
| 3956 | i_ipmi_request(NULL, |
| 3957 | intf, |
| 3958 | &addr, |
| 3959 | 0, |
| 3960 | &msg, |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 3961 | intf, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3962 | &smi_msg, |
| 3963 | &recv_msg, |
| 3964 | 0, |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 3965 | intf->channels[0].address, |
| 3966 | intf->channels[0].lun, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3967 | 0, 1); /* Don't retry, and don't wait. */ |
| 3968 | |
| 3969 | if (intf->local_event_generator) { |
| 3970 | /* Request the event receiver from the local MC. */ |
| 3971 | msg.netfn = IPMI_NETFN_SENSOR_EVENT_REQUEST; |
| 3972 | msg.cmd = IPMI_GET_EVENT_RECEIVER_CMD; |
| 3973 | msg.data = NULL; |
| 3974 | msg.data_len = 0; |
| 3975 | intf->null_user_handler = event_receiver_fetcher; |
| 3976 | i_ipmi_request(NULL, |
| 3977 | intf, |
| 3978 | &addr, |
| 3979 | 0, |
| 3980 | &msg, |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 3981 | intf, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3982 | &smi_msg, |
| 3983 | &recv_msg, |
| 3984 | 0, |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 3985 | intf->channels[0].address, |
| 3986 | intf->channels[0].lun, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3987 | 0, 1); /* no retry, and no wait. */ |
| 3988 | } |
| 3989 | intf->null_user_handler = NULL; |
| 3990 | |
| 3991 | /* Validate the event receiver. The low bit must not |
| 3992 | be 1 (it must be a valid IPMB address), it cannot |
| 3993 | be zero, and it must not be my address. */ |
| 3994 | if (((intf->event_receiver & 1) == 0) |
| 3995 | && (intf->event_receiver != 0) |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 3996 | && (intf->event_receiver != intf->channels[0].address)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3997 | { |
| 3998 | /* The event receiver is valid, send an IPMB |
| 3999 | message. */ |
| 4000 | ipmb = (struct ipmi_ipmb_addr *) &addr; |
| 4001 | ipmb->addr_type = IPMI_IPMB_ADDR_TYPE; |
| 4002 | ipmb->channel = 0; /* FIXME - is this right? */ |
| 4003 | ipmb->lun = intf->event_receiver_lun; |
| 4004 | ipmb->slave_addr = intf->event_receiver; |
| 4005 | } else if (intf->local_sel_device) { |
| 4006 | /* The event receiver was not valid (or was |
| 4007 | me), but I am an SEL device, just dump it |
| 4008 | in my SEL. */ |
| 4009 | si = (struct ipmi_system_interface_addr *) &addr; |
| 4010 | si->addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; |
| 4011 | si->channel = IPMI_BMC_CHANNEL; |
| 4012 | si->lun = 0; |
| 4013 | } else |
| 4014 | continue; /* No where to send the event. */ |
| 4015 | |
| 4016 | |
| 4017 | msg.netfn = IPMI_NETFN_STORAGE_REQUEST; /* Storage. */ |
| 4018 | msg.cmd = IPMI_ADD_SEL_ENTRY_CMD; |
| 4019 | msg.data = data; |
| 4020 | msg.data_len = 16; |
| 4021 | |
| 4022 | j = 0; |
| 4023 | while (*p) { |
| 4024 | int size = strlen(p); |
| 4025 | |
| 4026 | if (size > 11) |
| 4027 | size = 11; |
| 4028 | data[0] = 0; |
| 4029 | data[1] = 0; |
| 4030 | data[2] = 0xf0; /* OEM event without timestamp. */ |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 4031 | data[3] = intf->channels[0].address; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4032 | data[4] = j++; /* sequence # */ |
| 4033 | /* Always give 11 bytes, so strncpy will fill |
| 4034 | it with zeroes for me. */ |
| 4035 | strncpy(data+5, p, 11); |
| 4036 | p += size; |
| 4037 | |
| 4038 | i_ipmi_request(NULL, |
| 4039 | intf, |
| 4040 | &addr, |
| 4041 | 0, |
| 4042 | &msg, |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 4043 | intf, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4044 | &smi_msg, |
| 4045 | &recv_msg, |
| 4046 | 0, |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 4047 | intf->channels[0].address, |
| 4048 | intf->channels[0].lun, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4049 | 0, 1); /* no retry, and no wait. */ |
| 4050 | } |
| 4051 | } |
| 4052 | #endif /* CONFIG_IPMI_PANIC_STRING */ |
| 4053 | } |
| 4054 | #endif /* CONFIG_IPMI_PANIC_EVENT */ |
| 4055 | |
Randy Dunlap | 0c8204b | 2006-12-10 02:19:06 -0800 | [diff] [blame] | 4056 | static int has_panicked; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4057 | |
| 4058 | static int panic_event(struct notifier_block *this, |
| 4059 | unsigned long event, |
| 4060 | void *ptr) |
| 4061 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4062 | ipmi_smi_t intf; |
| 4063 | |
Lee Revell | f18190b | 2006-06-26 18:30:00 +0200 | [diff] [blame] | 4064 | if (has_panicked) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4065 | return NOTIFY_DONE; |
Lee Revell | f18190b | 2006-06-26 18:30:00 +0200 | [diff] [blame] | 4066 | has_panicked = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4067 | |
| 4068 | /* For every registered interface, set it to run to completion. */ |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 4069 | list_for_each_entry_rcu(intf, &ipmi_interfaces, link) { |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 4070 | if (!intf->handlers) |
| 4071 | /* Interface is not ready. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4072 | continue; |
| 4073 | |
| 4074 | intf->handlers->set_run_to_completion(intf->send_info, 1); |
| 4075 | } |
| 4076 | |
| 4077 | #ifdef CONFIG_IPMI_PANIC_EVENT |
| 4078 | send_panic_events(ptr); |
| 4079 | #endif |
| 4080 | |
| 4081 | return NOTIFY_DONE; |
| 4082 | } |
| 4083 | |
| 4084 | static struct notifier_block panic_block = { |
| 4085 | .notifier_call = panic_event, |
| 4086 | .next = NULL, |
| 4087 | .priority = 200 /* priority: INT_MAX >= x >= 0 */ |
| 4088 | }; |
| 4089 | |
| 4090 | static int ipmi_init_msghandler(void) |
| 4091 | { |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 4092 | int rv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4093 | |
| 4094 | if (initialized) |
| 4095 | return 0; |
| 4096 | |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 4097 | rv = driver_register(&ipmidriver); |
| 4098 | if (rv) { |
| 4099 | printk(KERN_ERR PFX "Could not register IPMI driver\n"); |
| 4100 | return rv; |
| 4101 | } |
| 4102 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4103 | printk(KERN_INFO "ipmi message handler version " |
Corey Minyard | 1fdd75b | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 4104 | IPMI_DRIVER_VERSION "\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4105 | |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 4106 | #ifdef CONFIG_PROC_FS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4107 | proc_ipmi_root = proc_mkdir("ipmi", NULL); |
| 4108 | if (!proc_ipmi_root) { |
| 4109 | printk(KERN_ERR PFX "Unable to create IPMI proc dir"); |
| 4110 | return -ENOMEM; |
| 4111 | } |
| 4112 | |
| 4113 | proc_ipmi_root->owner = THIS_MODULE; |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 4114 | #endif /* CONFIG_PROC_FS */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4115 | |
Corey Minyard | 409035e | 2006-06-28 04:26:53 -0700 | [diff] [blame] | 4116 | setup_timer(&ipmi_timer, ipmi_timeout, 0); |
| 4117 | mod_timer(&ipmi_timer, jiffies + IPMI_TIMEOUT_JIFFIES); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4118 | |
Alan Stern | e041c68 | 2006-03-27 01:16:30 -0800 | [diff] [blame] | 4119 | atomic_notifier_chain_register(&panic_notifier_list, &panic_block); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4120 | |
| 4121 | initialized = 1; |
| 4122 | |
| 4123 | return 0; |
| 4124 | } |
| 4125 | |
| 4126 | static __init int ipmi_init_msghandler_mod(void) |
| 4127 | { |
| 4128 | ipmi_init_msghandler(); |
| 4129 | return 0; |
| 4130 | } |
| 4131 | |
| 4132 | static __exit void cleanup_ipmi(void) |
| 4133 | { |
| 4134 | int count; |
| 4135 | |
| 4136 | if (!initialized) |
| 4137 | return; |
| 4138 | |
Alan Stern | e041c68 | 2006-03-27 01:16:30 -0800 | [diff] [blame] | 4139 | atomic_notifier_chain_unregister(&panic_notifier_list, &panic_block); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4140 | |
| 4141 | /* This can't be called if any interfaces exist, so no worry about |
| 4142 | shutting down the interfaces. */ |
| 4143 | |
| 4144 | /* Tell the timer to stop, then wait for it to stop. This avoids |
| 4145 | problems with race conditions removing the timer here. */ |
Corey Minyard | 8f43f84 | 2005-06-23 22:01:40 -0700 | [diff] [blame] | 4146 | atomic_inc(&stop_operation); |
| 4147 | del_timer_sync(&ipmi_timer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4148 | |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 4149 | #ifdef CONFIG_PROC_FS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4150 | remove_proc_entry(proc_ipmi_root->name, &proc_root); |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 4151 | #endif /* CONFIG_PROC_FS */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4152 | |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 4153 | driver_unregister(&ipmidriver); |
| 4154 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4155 | initialized = 0; |
| 4156 | |
| 4157 | /* Check for buffer leaks. */ |
| 4158 | count = atomic_read(&smi_msg_inuse_count); |
| 4159 | if (count != 0) |
| 4160 | printk(KERN_WARNING PFX "SMI message count %d at exit\n", |
| 4161 | count); |
| 4162 | count = atomic_read(&recv_msg_inuse_count); |
| 4163 | if (count != 0) |
| 4164 | printk(KERN_WARNING PFX "recv message count %d at exit\n", |
| 4165 | count); |
| 4166 | } |
| 4167 | module_exit(cleanup_ipmi); |
| 4168 | |
| 4169 | module_init(ipmi_init_msghandler_mod); |
| 4170 | MODULE_LICENSE("GPL"); |
Corey Minyard | 1fdd75b | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 4171 | MODULE_AUTHOR("Corey Minyard <minyard@mvista.com>"); |
| 4172 | MODULE_DESCRIPTION("Incoming and outgoing message routing for an IPMI interface."); |
| 4173 | MODULE_VERSION(IPMI_DRIVER_VERSION); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4174 | |
| 4175 | EXPORT_SYMBOL(ipmi_create_user); |
| 4176 | EXPORT_SYMBOL(ipmi_destroy_user); |
| 4177 | EXPORT_SYMBOL(ipmi_get_version); |
| 4178 | EXPORT_SYMBOL(ipmi_request_settime); |
| 4179 | EXPORT_SYMBOL(ipmi_request_supply_msgs); |
| 4180 | EXPORT_SYMBOL(ipmi_register_smi); |
| 4181 | EXPORT_SYMBOL(ipmi_unregister_smi); |
| 4182 | EXPORT_SYMBOL(ipmi_register_for_cmd); |
| 4183 | EXPORT_SYMBOL(ipmi_unregister_for_cmd); |
| 4184 | EXPORT_SYMBOL(ipmi_smi_msg_received); |
| 4185 | EXPORT_SYMBOL(ipmi_smi_watchdog_pretimeout); |
| 4186 | EXPORT_SYMBOL(ipmi_alloc_smi_msg); |
| 4187 | EXPORT_SYMBOL(ipmi_addr_length); |
| 4188 | EXPORT_SYMBOL(ipmi_validate_addr); |
| 4189 | EXPORT_SYMBOL(ipmi_set_gets_events); |
| 4190 | EXPORT_SYMBOL(ipmi_smi_watcher_register); |
| 4191 | EXPORT_SYMBOL(ipmi_smi_watcher_unregister); |
| 4192 | EXPORT_SYMBOL(ipmi_set_my_address); |
| 4193 | EXPORT_SYMBOL(ipmi_get_my_address); |
| 4194 | EXPORT_SYMBOL(ipmi_set_my_LUN); |
| 4195 | EXPORT_SYMBOL(ipmi_get_my_LUN); |
| 4196 | EXPORT_SYMBOL(ipmi_smi_add_proc_entry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4197 | EXPORT_SYMBOL(ipmi_user_set_run_to_completion); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 4198 | EXPORT_SYMBOL(ipmi_free_recv_msg); |