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 | f7caa1b | 2008-04-29 01:01:04 -0700 | [diff] [blame] | 50 | #define IPMI_DRIVER_VERSION "39.2" |
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 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 66 | /* |
| 67 | * Don't let a message sit in a queue forever, always time it with at lest |
| 68 | * the max message timer. This is in milliseconds. |
| 69 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 70 | #define MAX_MSG_TIMEOUT 60000 |
| 71 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 72 | /* |
| 73 | * The main "user" data structure. |
| 74 | */ |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 75 | struct ipmi_user { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 94 | struct cmd_rcvr { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | struct list_head link; |
| 96 | |
| 97 | ipmi_user_t user; |
| 98 | unsigned char netfn; |
| 99 | unsigned char cmd; |
Corey Minyard | c69c312 | 2006-09-30 23:27:56 -0700 | [diff] [blame] | 100 | unsigned int chans; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 101 | |
| 102 | /* |
| 103 | * This is used to form a linked lised during mass deletion. |
| 104 | * Since this is in an RCU list, we cannot use the link above |
| 105 | * or change any data until the RCU period completes. So we |
| 106 | * use this next variable during mass deletion so we can have |
| 107 | * a list and don't have to wait and restart the search on |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 108 | * every individual deletion of a command. |
| 109 | */ |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 110 | struct cmd_rcvr *next; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 111 | }; |
| 112 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 113 | struct seq_table { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 114 | unsigned int inuse : 1; |
| 115 | unsigned int broadcast : 1; |
| 116 | |
| 117 | unsigned long timeout; |
| 118 | unsigned long orig_timeout; |
| 119 | unsigned int retries_left; |
| 120 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 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 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | long seqid; |
| 127 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 128 | /* |
| 129 | * This is held so we can properly respond to the message on a |
| 130 | * timeout, and it is used to hold the temporary data for |
| 131 | * retransmission, too. |
| 132 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 133 | struct ipmi_recv_msg *recv_msg; |
| 134 | }; |
| 135 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 136 | /* |
| 137 | * Store the information in a msgid (long) to allow us to find a |
| 138 | * sequence table entry from the msgid. |
| 139 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 140 | #define STORE_SEQ_IN_MSGID(seq, seqid) (((seq&0xff)<<26) | (seqid&0x3ffffff)) |
| 141 | |
| 142 | #define GET_SEQ_FROM_MSGID(msgid, seq, seqid) \ |
| 143 | do { \ |
| 144 | seq = ((msgid >> 26) & 0x3f); \ |
| 145 | seqid = (msgid & 0x3fffff); \ |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 146 | } while (0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 147 | |
| 148 | #define NEXT_SEQID(seqid) (((seqid) + 1) & 0x3fffff) |
| 149 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 150 | struct ipmi_channel { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 151 | unsigned char medium; |
| 152 | unsigned char protocol; |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 153 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 154 | /* |
| 155 | * My slave address. This is initialized to IPMI_BMC_SLAVE_ADDR, |
| 156 | * but may be changed by the user. |
| 157 | */ |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 158 | unsigned char address; |
| 159 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 160 | /* |
| 161 | * My LUN. This should generally stay the SMS LUN, but just in |
| 162 | * case... |
| 163 | */ |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 164 | unsigned char lun; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 165 | }; |
| 166 | |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 167 | #ifdef CONFIG_PROC_FS |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 168 | struct ipmi_proc_entry { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 169 | char *name; |
| 170 | struct ipmi_proc_entry *next; |
| 171 | }; |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 172 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 173 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 174 | struct bmc_device { |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 175 | struct platform_device *dev; |
| 176 | struct ipmi_device_id id; |
| 177 | unsigned char guid[16]; |
| 178 | int guid_set; |
| 179 | |
| 180 | struct kref refcount; |
| 181 | |
| 182 | /* bmc device attributes */ |
| 183 | struct device_attribute device_id_attr; |
| 184 | struct device_attribute provides_dev_sdrs_attr; |
| 185 | struct device_attribute revision_attr; |
| 186 | struct device_attribute firmware_rev_attr; |
| 187 | struct device_attribute version_attr; |
| 188 | struct device_attribute add_dev_support_attr; |
| 189 | struct device_attribute manufacturer_id_attr; |
| 190 | struct device_attribute product_id_attr; |
| 191 | struct device_attribute guid_attr; |
| 192 | struct device_attribute aux_firmware_rev_attr; |
| 193 | }; |
| 194 | |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 195 | /* |
| 196 | * Various statistics for IPMI, these index stats[] in the ipmi_smi |
| 197 | * structure. |
| 198 | */ |
Corey Minyard | 73f2bdb | 2008-04-29 01:01:06 -0700 | [diff] [blame] | 199 | enum ipmi_stat_indexes { |
| 200 | /* Commands we got from the user that were invalid. */ |
| 201 | IPMI_STAT_sent_invalid_commands = 0, |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 202 | |
Corey Minyard | 73f2bdb | 2008-04-29 01:01:06 -0700 | [diff] [blame] | 203 | /* Commands we sent to the MC. */ |
| 204 | IPMI_STAT_sent_local_commands, |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 205 | |
Corey Minyard | 73f2bdb | 2008-04-29 01:01:06 -0700 | [diff] [blame] | 206 | /* Responses from the MC that were delivered to a user. */ |
| 207 | IPMI_STAT_handled_local_responses, |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 208 | |
Corey Minyard | 73f2bdb | 2008-04-29 01:01:06 -0700 | [diff] [blame] | 209 | /* Responses from the MC that were not delivered to a user. */ |
| 210 | IPMI_STAT_unhandled_local_responses, |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 211 | |
Corey Minyard | 73f2bdb | 2008-04-29 01:01:06 -0700 | [diff] [blame] | 212 | /* Commands we sent out to the IPMB bus. */ |
| 213 | IPMI_STAT_sent_ipmb_commands, |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 214 | |
Corey Minyard | 73f2bdb | 2008-04-29 01:01:06 -0700 | [diff] [blame] | 215 | /* Commands sent on the IPMB that had errors on the SEND CMD */ |
| 216 | IPMI_STAT_sent_ipmb_command_errs, |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 217 | |
Corey Minyard | 73f2bdb | 2008-04-29 01:01:06 -0700 | [diff] [blame] | 218 | /* Each retransmit increments this count. */ |
| 219 | IPMI_STAT_retransmitted_ipmb_commands, |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 220 | |
Corey Minyard | 73f2bdb | 2008-04-29 01:01:06 -0700 | [diff] [blame] | 221 | /* |
| 222 | * When a message times out (runs out of retransmits) this is |
| 223 | * incremented. |
| 224 | */ |
| 225 | IPMI_STAT_timed_out_ipmb_commands, |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 226 | |
Corey Minyard | 73f2bdb | 2008-04-29 01:01:06 -0700 | [diff] [blame] | 227 | /* |
| 228 | * This is like above, but for broadcasts. Broadcasts are |
| 229 | * *not* included in the above count (they are expected to |
| 230 | * time out). |
| 231 | */ |
| 232 | IPMI_STAT_timed_out_ipmb_broadcasts, |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 233 | |
Corey Minyard | 73f2bdb | 2008-04-29 01:01:06 -0700 | [diff] [blame] | 234 | /* Responses I have sent to the IPMB bus. */ |
| 235 | IPMI_STAT_sent_ipmb_responses, |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 236 | |
Corey Minyard | 73f2bdb | 2008-04-29 01:01:06 -0700 | [diff] [blame] | 237 | /* The response was delivered to the user. */ |
| 238 | IPMI_STAT_handled_ipmb_responses, |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 239 | |
Corey Minyard | 73f2bdb | 2008-04-29 01:01:06 -0700 | [diff] [blame] | 240 | /* The response had invalid data in it. */ |
| 241 | IPMI_STAT_invalid_ipmb_responses, |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 242 | |
Corey Minyard | 73f2bdb | 2008-04-29 01:01:06 -0700 | [diff] [blame] | 243 | /* The response didn't have anyone waiting for it. */ |
| 244 | IPMI_STAT_unhandled_ipmb_responses, |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 245 | |
Corey Minyard | 73f2bdb | 2008-04-29 01:01:06 -0700 | [diff] [blame] | 246 | /* Commands we sent out to the IPMB bus. */ |
| 247 | IPMI_STAT_sent_lan_commands, |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 248 | |
Corey Minyard | 73f2bdb | 2008-04-29 01:01:06 -0700 | [diff] [blame] | 249 | /* Commands sent on the IPMB that had errors on the SEND CMD */ |
| 250 | IPMI_STAT_sent_lan_command_errs, |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 251 | |
Corey Minyard | 73f2bdb | 2008-04-29 01:01:06 -0700 | [diff] [blame] | 252 | /* Each retransmit increments this count. */ |
| 253 | IPMI_STAT_retransmitted_lan_commands, |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 254 | |
Corey Minyard | 73f2bdb | 2008-04-29 01:01:06 -0700 | [diff] [blame] | 255 | /* |
| 256 | * When a message times out (runs out of retransmits) this is |
| 257 | * incremented. |
| 258 | */ |
| 259 | IPMI_STAT_timed_out_lan_commands, |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 260 | |
Corey Minyard | 73f2bdb | 2008-04-29 01:01:06 -0700 | [diff] [blame] | 261 | /* Responses I have sent to the IPMB bus. */ |
| 262 | IPMI_STAT_sent_lan_responses, |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 263 | |
Corey Minyard | 73f2bdb | 2008-04-29 01:01:06 -0700 | [diff] [blame] | 264 | /* The response was delivered to the user. */ |
| 265 | IPMI_STAT_handled_lan_responses, |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 266 | |
Corey Minyard | 73f2bdb | 2008-04-29 01:01:06 -0700 | [diff] [blame] | 267 | /* The response had invalid data in it. */ |
| 268 | IPMI_STAT_invalid_lan_responses, |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 269 | |
Corey Minyard | 73f2bdb | 2008-04-29 01:01:06 -0700 | [diff] [blame] | 270 | /* The response didn't have anyone waiting for it. */ |
| 271 | IPMI_STAT_unhandled_lan_responses, |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 272 | |
Corey Minyard | 73f2bdb | 2008-04-29 01:01:06 -0700 | [diff] [blame] | 273 | /* The command was delivered to the user. */ |
| 274 | IPMI_STAT_handled_commands, |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 275 | |
Corey Minyard | 73f2bdb | 2008-04-29 01:01:06 -0700 | [diff] [blame] | 276 | /* The command had invalid data in it. */ |
| 277 | IPMI_STAT_invalid_commands, |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 278 | |
Corey Minyard | 73f2bdb | 2008-04-29 01:01:06 -0700 | [diff] [blame] | 279 | /* The command didn't have anyone waiting for it. */ |
| 280 | IPMI_STAT_unhandled_commands, |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 281 | |
Corey Minyard | 73f2bdb | 2008-04-29 01:01:06 -0700 | [diff] [blame] | 282 | /* Invalid data in an event. */ |
| 283 | IPMI_STAT_invalid_events, |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 284 | |
Corey Minyard | 73f2bdb | 2008-04-29 01:01:06 -0700 | [diff] [blame] | 285 | /* Events that were received with the proper format. */ |
| 286 | IPMI_STAT_events, |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 287 | |
Corey Minyard | 73f2bdb | 2008-04-29 01:01:06 -0700 | [diff] [blame] | 288 | |
| 289 | /* This *must* remain last, add new values above this. */ |
| 290 | IPMI_NUM_STATS |
| 291 | }; |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 292 | |
| 293 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 294 | #define IPMI_IPMB_NUM_SEQ 64 |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 295 | #define IPMI_MAX_CHANNELS 16 |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 296 | struct ipmi_smi { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 297 | /* What interface number are we? */ |
| 298 | int intf_num; |
| 299 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 300 | struct kref refcount; |
| 301 | |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 302 | /* Used for a list of interfaces. */ |
| 303 | struct list_head link; |
| 304 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 305 | /* |
| 306 | * The list of upper layers that are using me. seq_lock |
| 307 | * protects this. |
| 308 | */ |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 309 | struct list_head users; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 310 | |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 311 | /* Information to supply to users. */ |
| 312 | unsigned char ipmi_version_major; |
| 313 | unsigned char ipmi_version_minor; |
| 314 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 315 | /* Used for wake ups at startup. */ |
| 316 | wait_queue_head_t waitq; |
| 317 | |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 318 | struct bmc_device *bmc; |
| 319 | char *my_dev_name; |
Corey Minyard | 759643b | 2006-12-06 20:40:59 -0800 | [diff] [blame] | 320 | char *sysfs_name; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 321 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 322 | /* |
| 323 | * This is the lower-layer's sender routine. Note that you |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 324 | * must either be holding the ipmi_interfaces_mutex or be in |
| 325 | * an umpreemptible region to use this. You must fetch the |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 326 | * value into a local variable and make sure it is not NULL. |
| 327 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | struct ipmi_smi_handlers *handlers; |
| 329 | void *send_info; |
| 330 | |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 331 | #ifdef CONFIG_PROC_FS |
Corey Minyard | ac01915 | 2007-10-18 03:07:11 -0700 | [diff] [blame] | 332 | /* A list of proc entries for this interface. */ |
| 333 | struct mutex proc_entry_lock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 334 | struct ipmi_proc_entry *proc_entries; |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 335 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 336 | |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 337 | /* Driver-model device for the system interface. */ |
| 338 | struct device *si_dev; |
| 339 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 340 | /* |
| 341 | * A table of sequence numbers for this interface. We use the |
| 342 | * sequence numbers for IPMB messages that go out of the |
| 343 | * interface to match them up with their responses. A routine |
| 344 | * is called periodically to time the items in this list. |
| 345 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 346 | spinlock_t seq_lock; |
| 347 | struct seq_table seq_table[IPMI_IPMB_NUM_SEQ]; |
| 348 | int curr_seq; |
| 349 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 350 | /* |
| 351 | * Messages that were delayed for some reason (out of memory, |
| 352 | * for instance), will go in here to be processed later in a |
| 353 | * periodic timer interrupt. |
| 354 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 355 | spinlock_t waiting_msgs_lock; |
| 356 | struct list_head waiting_msgs; |
| 357 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 358 | /* |
| 359 | * The list of command receivers that are registered for commands |
| 360 | * on this interface. |
| 361 | */ |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 362 | struct mutex cmd_rcvrs_mutex; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 363 | struct list_head cmd_rcvrs; |
| 364 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 365 | /* |
| 366 | * Events that were queues because no one was there to receive |
| 367 | * them. |
| 368 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 369 | spinlock_t events_lock; /* For dealing with event stuff. */ |
| 370 | struct list_head waiting_events; |
| 371 | unsigned int waiting_events_count; /* How many events in queue? */ |
Corey Minyard | 87ebd06 | 2008-04-29 01:01:04 -0700 | [diff] [blame] | 372 | char delivering_events; |
| 373 | char event_msg_printed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 374 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 375 | /* |
| 376 | * The event receiver for my BMC, only really used at panic |
| 377 | * shutdown as a place to store this. |
| 378 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 379 | unsigned char event_receiver; |
| 380 | unsigned char event_receiver_lun; |
| 381 | unsigned char local_sel_device; |
| 382 | unsigned char local_event_generator; |
| 383 | |
Corey Minyard | b967513 | 2006-12-06 20:41:02 -0800 | [diff] [blame] | 384 | /* For handling of maintenance mode. */ |
| 385 | int maintenance_mode; |
| 386 | int maintenance_mode_enable; |
| 387 | int auto_maintenance_timeout; |
| 388 | spinlock_t maintenance_mode_lock; /* Used in a timer... */ |
| 389 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 390 | /* |
| 391 | * A cheap hack, if this is non-null and a message to an |
| 392 | * interface comes in with a NULL user, call this routine with |
| 393 | * it. Note that the message will still be freed by the |
| 394 | * caller. This only works on the system interface. |
| 395 | */ |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 396 | 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] | 397 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 398 | /* |
| 399 | * When we are scanning the channels for an SMI, this will |
| 400 | * tell which channel we are scanning. |
| 401 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 402 | int curr_channel; |
| 403 | |
| 404 | /* Channel information */ |
| 405 | struct ipmi_channel channels[IPMI_MAX_CHANNELS]; |
| 406 | |
| 407 | /* Proc FS stuff. */ |
| 408 | struct proc_dir_entry *proc_dir; |
| 409 | char proc_dir_name[10]; |
| 410 | |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 411 | atomic_t stats[IPMI_NUM_STATS]; |
Konstantin Baydarov | 5956dce | 2008-04-29 01:01:03 -0700 | [diff] [blame] | 412 | |
| 413 | /* |
| 414 | * run_to_completion duplicate of smb_info, smi_info |
| 415 | * and ipmi_serial_info structures. Used to decrease numbers of |
| 416 | * parameters passed by "low" level IPMI code. |
| 417 | */ |
| 418 | int run_to_completion; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 419 | }; |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 420 | #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] | 421 | |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 422 | /** |
| 423 | * The driver model view of the IPMI messaging driver. |
| 424 | */ |
Darrick J. Wong | fe2d5ff | 2008-11-12 13:25:00 -0800 | [diff] [blame] | 425 | static struct platform_driver ipmidriver = { |
| 426 | .driver = { |
| 427 | .name = "ipmi", |
| 428 | .bus = &platform_bus_type |
| 429 | } |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 430 | }; |
| 431 | static DEFINE_MUTEX(ipmidriver_mutex); |
| 432 | |
Denis Cheng | bed9759 | 2008-02-06 01:37:35 -0800 | [diff] [blame] | 433 | static LIST_HEAD(ipmi_interfaces); |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 434 | static DEFINE_MUTEX(ipmi_interfaces_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 435 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 436 | /* |
| 437 | * List of watchers that want to know when smi's are added and deleted. |
| 438 | */ |
Denis Cheng | bed9759 | 2008-02-06 01:37:35 -0800 | [diff] [blame] | 439 | static LIST_HEAD(smi_watchers); |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 440 | static DEFINE_MUTEX(smi_watchers_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 441 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 442 | |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 443 | #define ipmi_inc_stat(intf, stat) \ |
| 444 | atomic_inc(&(intf)->stats[IPMI_STAT_ ## stat]) |
| 445 | #define ipmi_get_stat(intf, stat) \ |
| 446 | ((unsigned int) atomic_read(&(intf)->stats[IPMI_STAT_ ## stat])) |
| 447 | |
| 448 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 449 | static void free_recv_msg_list(struct list_head *q) |
| 450 | { |
| 451 | struct ipmi_recv_msg *msg, *msg2; |
| 452 | |
| 453 | list_for_each_entry_safe(msg, msg2, q, link) { |
| 454 | list_del(&msg->link); |
| 455 | ipmi_free_recv_msg(msg); |
| 456 | } |
| 457 | } |
| 458 | |
Corey Minyard | f3ce6a0 | 2006-11-08 17:44:52 -0800 | [diff] [blame] | 459 | static void free_smi_msg_list(struct list_head *q) |
| 460 | { |
| 461 | struct ipmi_smi_msg *msg, *msg2; |
| 462 | |
| 463 | list_for_each_entry_safe(msg, msg2, q, link) { |
| 464 | list_del(&msg->link); |
| 465 | ipmi_free_smi_msg(msg); |
| 466 | } |
| 467 | } |
| 468 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 469 | static void clean_up_interface_data(ipmi_smi_t intf) |
| 470 | { |
| 471 | int i; |
| 472 | struct cmd_rcvr *rcvr, *rcvr2; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 473 | struct list_head list; |
| 474 | |
Corey Minyard | f3ce6a0 | 2006-11-08 17:44:52 -0800 | [diff] [blame] | 475 | free_smi_msg_list(&intf->waiting_msgs); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 476 | free_recv_msg_list(&intf->waiting_events); |
| 477 | |
Corey Minyard | 78ba2fa | 2007-02-10 01:45:45 -0800 | [diff] [blame] | 478 | /* |
| 479 | * Wholesale remove all the entries from the list in the |
| 480 | * interface and wait for RCU to know that none are in use. |
| 481 | */ |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 482 | mutex_lock(&intf->cmd_rcvrs_mutex); |
Corey Minyard | 78ba2fa | 2007-02-10 01:45:45 -0800 | [diff] [blame] | 483 | INIT_LIST_HEAD(&list); |
| 484 | list_splice_init_rcu(&intf->cmd_rcvrs, &list, synchronize_rcu); |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 485 | mutex_unlock(&intf->cmd_rcvrs_mutex); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 486 | |
| 487 | list_for_each_entry_safe(rcvr, rcvr2, &list, link) |
| 488 | kfree(rcvr); |
| 489 | |
| 490 | for (i = 0; i < IPMI_IPMB_NUM_SEQ; i++) { |
| 491 | if ((intf->seq_table[i].inuse) |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 492 | && (intf->seq_table[i].recv_msg)) |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 493 | ipmi_free_recv_msg(intf->seq_table[i].recv_msg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 494 | } |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 495 | } |
| 496 | |
| 497 | static void intf_free(struct kref *ref) |
| 498 | { |
| 499 | ipmi_smi_t intf = container_of(ref, struct ipmi_smi, refcount); |
| 500 | |
| 501 | clean_up_interface_data(intf); |
| 502 | kfree(intf); |
| 503 | } |
| 504 | |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 505 | struct watcher_entry { |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 506 | int intf_num; |
| 507 | ipmi_smi_t intf; |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 508 | struct list_head link; |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 509 | }; |
| 510 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 511 | int ipmi_smi_watcher_register(struct ipmi_smi_watcher *watcher) |
| 512 | { |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 513 | ipmi_smi_t intf; |
Denis Cheng | e381d1c | 2008-02-06 01:37:39 -0800 | [diff] [blame] | 514 | LIST_HEAD(to_deliver); |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 515 | struct watcher_entry *e, *e2; |
| 516 | |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 517 | mutex_lock(&smi_watchers_mutex); |
| 518 | |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 519 | mutex_lock(&ipmi_interfaces_mutex); |
| 520 | |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 521 | /* Build a list of things to deliver. */ |
Corey Minyard | 78ba2fa | 2007-02-10 01:45:45 -0800 | [diff] [blame] | 522 | list_for_each_entry(intf, &ipmi_interfaces, link) { |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 523 | if (intf->intf_num == -1) |
| 524 | continue; |
| 525 | e = kmalloc(sizeof(*e), GFP_KERNEL); |
| 526 | if (!e) |
| 527 | goto out_err; |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 528 | kref_get(&intf->refcount); |
| 529 | e->intf = intf; |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 530 | e->intf_num = intf->intf_num; |
| 531 | list_add_tail(&e->link, &to_deliver); |
| 532 | } |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 533 | |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 534 | /* We will succeed, so add it to the list. */ |
| 535 | list_add(&watcher->link, &smi_watchers); |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 536 | |
| 537 | mutex_unlock(&ipmi_interfaces_mutex); |
| 538 | |
| 539 | list_for_each_entry_safe(e, e2, &to_deliver, link) { |
| 540 | list_del(&e->link); |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 541 | watcher->new_smi(e->intf_num, e->intf->si_dev); |
| 542 | kref_put(&e->intf->refcount, intf_free); |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 543 | kfree(e); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 544 | } |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 545 | |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 546 | mutex_unlock(&smi_watchers_mutex); |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 547 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 548 | return 0; |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 549 | |
| 550 | out_err: |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 551 | mutex_unlock(&ipmi_interfaces_mutex); |
| 552 | mutex_unlock(&smi_watchers_mutex); |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 553 | list_for_each_entry_safe(e, e2, &to_deliver, link) { |
| 554 | list_del(&e->link); |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 555 | kref_put(&e->intf->refcount, intf_free); |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 556 | kfree(e); |
| 557 | } |
| 558 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 559 | } |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 560 | EXPORT_SYMBOL(ipmi_smi_watcher_register); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 561 | |
| 562 | int ipmi_smi_watcher_unregister(struct ipmi_smi_watcher *watcher) |
| 563 | { |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 564 | mutex_lock(&smi_watchers_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 565 | list_del(&(watcher->link)); |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 566 | mutex_unlock(&smi_watchers_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 567 | return 0; |
| 568 | } |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 569 | EXPORT_SYMBOL(ipmi_smi_watcher_unregister); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 570 | |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 571 | /* |
| 572 | * Must be called with smi_watchers_mutex held. |
| 573 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 574 | static void |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 575 | call_smi_watchers(int i, struct device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 576 | { |
| 577 | struct ipmi_smi_watcher *w; |
| 578 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 579 | list_for_each_entry(w, &smi_watchers, link) { |
| 580 | if (try_module_get(w->owner)) { |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 581 | w->new_smi(i, dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 582 | module_put(w->owner); |
| 583 | } |
| 584 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 585 | } |
| 586 | |
| 587 | static int |
| 588 | ipmi_addr_equal(struct ipmi_addr *addr1, struct ipmi_addr *addr2) |
| 589 | { |
| 590 | if (addr1->addr_type != addr2->addr_type) |
| 591 | return 0; |
| 592 | |
| 593 | if (addr1->channel != addr2->channel) |
| 594 | return 0; |
| 595 | |
| 596 | if (addr1->addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) { |
| 597 | struct ipmi_system_interface_addr *smi_addr1 |
| 598 | = (struct ipmi_system_interface_addr *) addr1; |
| 599 | struct ipmi_system_interface_addr *smi_addr2 |
| 600 | = (struct ipmi_system_interface_addr *) addr2; |
| 601 | return (smi_addr1->lun == smi_addr2->lun); |
| 602 | } |
| 603 | |
| 604 | if ((addr1->addr_type == IPMI_IPMB_ADDR_TYPE) |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 605 | || (addr1->addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 606 | struct ipmi_ipmb_addr *ipmb_addr1 |
| 607 | = (struct ipmi_ipmb_addr *) addr1; |
| 608 | struct ipmi_ipmb_addr *ipmb_addr2 |
| 609 | = (struct ipmi_ipmb_addr *) addr2; |
| 610 | |
| 611 | return ((ipmb_addr1->slave_addr == ipmb_addr2->slave_addr) |
| 612 | && (ipmb_addr1->lun == ipmb_addr2->lun)); |
| 613 | } |
| 614 | |
| 615 | if (addr1->addr_type == IPMI_LAN_ADDR_TYPE) { |
| 616 | struct ipmi_lan_addr *lan_addr1 |
| 617 | = (struct ipmi_lan_addr *) addr1; |
| 618 | struct ipmi_lan_addr *lan_addr2 |
| 619 | = (struct ipmi_lan_addr *) addr2; |
| 620 | |
| 621 | return ((lan_addr1->remote_SWID == lan_addr2->remote_SWID) |
| 622 | && (lan_addr1->local_SWID == lan_addr2->local_SWID) |
| 623 | && (lan_addr1->session_handle |
| 624 | == lan_addr2->session_handle) |
| 625 | && (lan_addr1->lun == lan_addr2->lun)); |
| 626 | } |
| 627 | |
| 628 | return 1; |
| 629 | } |
| 630 | |
| 631 | int ipmi_validate_addr(struct ipmi_addr *addr, int len) |
| 632 | { |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 633 | if (len < sizeof(struct ipmi_system_interface_addr)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 634 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 635 | |
| 636 | if (addr->addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) { |
| 637 | if (addr->channel != IPMI_BMC_CHANNEL) |
| 638 | return -EINVAL; |
| 639 | return 0; |
| 640 | } |
| 641 | |
| 642 | if ((addr->channel == IPMI_BMC_CHANNEL) |
Jayachandran C | 12fc1d7 | 2006-02-03 03:04:51 -0800 | [diff] [blame] | 643 | || (addr->channel >= IPMI_MAX_CHANNELS) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 644 | || (addr->channel < 0)) |
| 645 | return -EINVAL; |
| 646 | |
| 647 | if ((addr->addr_type == IPMI_IPMB_ADDR_TYPE) |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 648 | || (addr->addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE)) { |
| 649 | if (len < sizeof(struct ipmi_ipmb_addr)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 650 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 651 | return 0; |
| 652 | } |
| 653 | |
| 654 | if (addr->addr_type == IPMI_LAN_ADDR_TYPE) { |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 655 | if (len < sizeof(struct ipmi_lan_addr)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 656 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 657 | return 0; |
| 658 | } |
| 659 | |
| 660 | return -EINVAL; |
| 661 | } |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 662 | EXPORT_SYMBOL(ipmi_validate_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 663 | |
| 664 | unsigned int ipmi_addr_length(int addr_type) |
| 665 | { |
| 666 | if (addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) |
| 667 | return sizeof(struct ipmi_system_interface_addr); |
| 668 | |
| 669 | if ((addr_type == IPMI_IPMB_ADDR_TYPE) |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 670 | || (addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 671 | return sizeof(struct ipmi_ipmb_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 672 | |
| 673 | if (addr_type == IPMI_LAN_ADDR_TYPE) |
| 674 | return sizeof(struct ipmi_lan_addr); |
| 675 | |
| 676 | return 0; |
| 677 | } |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 678 | EXPORT_SYMBOL(ipmi_addr_length); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 679 | |
| 680 | static void deliver_response(struct ipmi_recv_msg *msg) |
| 681 | { |
Corey Minyard | 8a3628d | 2006-03-31 02:30:40 -0800 | [diff] [blame] | 682 | if (!msg->user) { |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 683 | ipmi_smi_t intf = msg->user_msg_data; |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 684 | |
| 685 | /* Special handling for NULL users. */ |
| 686 | if (intf->null_user_handler) { |
| 687 | intf->null_user_handler(intf, msg); |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 688 | ipmi_inc_stat(intf, handled_local_responses); |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 689 | } else { |
| 690 | /* No handler, so give up. */ |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 691 | ipmi_inc_stat(intf, unhandled_local_responses); |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 692 | } |
| 693 | ipmi_free_recv_msg(msg); |
| 694 | } else { |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 695 | ipmi_user_t user = msg->user; |
| 696 | user->handler->ipmi_recv_hndl(msg, user->handler_data); |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 697 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 698 | } |
| 699 | |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 700 | static void |
| 701 | deliver_err_response(struct ipmi_recv_msg *msg, int err) |
| 702 | { |
| 703 | msg->recv_type = IPMI_RESPONSE_RECV_TYPE; |
| 704 | msg->msg_data[0] = err; |
| 705 | msg->msg.netfn |= 1; /* Convert to a response. */ |
| 706 | msg->msg.data_len = 1; |
| 707 | msg->msg.data = msg->msg_data; |
| 708 | deliver_response(msg); |
| 709 | } |
| 710 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 711 | /* |
| 712 | * Find the next sequence number not being used and add the given |
| 713 | * message with the given timeout to the sequence table. This must be |
| 714 | * called with the interface's seq_lock held. |
| 715 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 716 | static int intf_next_seq(ipmi_smi_t intf, |
| 717 | struct ipmi_recv_msg *recv_msg, |
| 718 | unsigned long timeout, |
| 719 | int retries, |
| 720 | int broadcast, |
| 721 | unsigned char *seq, |
| 722 | long *seqid) |
| 723 | { |
| 724 | int rv = 0; |
| 725 | unsigned int i; |
| 726 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 727 | for (i = intf->curr_seq; (i+1)%IPMI_IPMB_NUM_SEQ != intf->curr_seq; |
| 728 | i = (i+1)%IPMI_IPMB_NUM_SEQ) { |
Corey Minyard | 8a3628d | 2006-03-31 02:30:40 -0800 | [diff] [blame] | 729 | if (!intf->seq_table[i].inuse) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 730 | break; |
| 731 | } |
| 732 | |
Corey Minyard | 8a3628d | 2006-03-31 02:30:40 -0800 | [diff] [blame] | 733 | if (!intf->seq_table[i].inuse) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 734 | intf->seq_table[i].recv_msg = recv_msg; |
| 735 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 736 | /* |
| 737 | * Start with the maximum timeout, when the send response |
| 738 | * comes in we will start the real timer. |
| 739 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 740 | intf->seq_table[i].timeout = MAX_MSG_TIMEOUT; |
| 741 | intf->seq_table[i].orig_timeout = timeout; |
| 742 | intf->seq_table[i].retries_left = retries; |
| 743 | intf->seq_table[i].broadcast = broadcast; |
| 744 | intf->seq_table[i].inuse = 1; |
| 745 | intf->seq_table[i].seqid = NEXT_SEQID(intf->seq_table[i].seqid); |
| 746 | *seq = i; |
| 747 | *seqid = intf->seq_table[i].seqid; |
| 748 | intf->curr_seq = (i+1)%IPMI_IPMB_NUM_SEQ; |
| 749 | } else { |
| 750 | rv = -EAGAIN; |
| 751 | } |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 752 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 753 | return rv; |
| 754 | } |
| 755 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 756 | /* |
| 757 | * Return the receive message for the given sequence number and |
| 758 | * release the sequence number so it can be reused. Some other data |
| 759 | * is passed in to be sure the message matches up correctly (to help |
| 760 | * guard against message coming in after their timeout and the |
| 761 | * sequence number being reused). |
| 762 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 763 | static int intf_find_seq(ipmi_smi_t intf, |
| 764 | unsigned char seq, |
| 765 | short channel, |
| 766 | unsigned char cmd, |
| 767 | unsigned char netfn, |
| 768 | struct ipmi_addr *addr, |
| 769 | struct ipmi_recv_msg **recv_msg) |
| 770 | { |
| 771 | int rv = -ENODEV; |
| 772 | unsigned long flags; |
| 773 | |
| 774 | if (seq >= IPMI_IPMB_NUM_SEQ) |
| 775 | return -EINVAL; |
| 776 | |
| 777 | spin_lock_irqsave(&(intf->seq_lock), flags); |
| 778 | if (intf->seq_table[seq].inuse) { |
| 779 | struct ipmi_recv_msg *msg = intf->seq_table[seq].recv_msg; |
| 780 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 781 | if ((msg->addr.channel == channel) && (msg->msg.cmd == cmd) |
| 782 | && (msg->msg.netfn == netfn) |
| 783 | && (ipmi_addr_equal(addr, &(msg->addr)))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 784 | *recv_msg = msg; |
| 785 | intf->seq_table[seq].inuse = 0; |
| 786 | rv = 0; |
| 787 | } |
| 788 | } |
| 789 | spin_unlock_irqrestore(&(intf->seq_lock), flags); |
| 790 | |
| 791 | return rv; |
| 792 | } |
| 793 | |
| 794 | |
| 795 | /* Start the timer for a specific sequence table entry. */ |
| 796 | static int intf_start_seq_timer(ipmi_smi_t intf, |
| 797 | long msgid) |
| 798 | { |
| 799 | int rv = -ENODEV; |
| 800 | unsigned long flags; |
| 801 | unsigned char seq; |
| 802 | unsigned long seqid; |
| 803 | |
| 804 | |
| 805 | GET_SEQ_FROM_MSGID(msgid, seq, seqid); |
| 806 | |
| 807 | spin_lock_irqsave(&(intf->seq_lock), flags); |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 808 | /* |
| 809 | * We do this verification because the user can be deleted |
| 810 | * while a message is outstanding. |
| 811 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 812 | if ((intf->seq_table[seq].inuse) |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 813 | && (intf->seq_table[seq].seqid == seqid)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 814 | struct seq_table *ent = &(intf->seq_table[seq]); |
| 815 | ent->timeout = ent->orig_timeout; |
| 816 | rv = 0; |
| 817 | } |
| 818 | spin_unlock_irqrestore(&(intf->seq_lock), flags); |
| 819 | |
| 820 | return rv; |
| 821 | } |
| 822 | |
| 823 | /* Got an error for the send message for a specific sequence number. */ |
| 824 | static int intf_err_seq(ipmi_smi_t intf, |
| 825 | long msgid, |
| 826 | unsigned int err) |
| 827 | { |
| 828 | int rv = -ENODEV; |
| 829 | unsigned long flags; |
| 830 | unsigned char seq; |
| 831 | unsigned long seqid; |
| 832 | struct ipmi_recv_msg *msg = NULL; |
| 833 | |
| 834 | |
| 835 | GET_SEQ_FROM_MSGID(msgid, seq, seqid); |
| 836 | |
| 837 | spin_lock_irqsave(&(intf->seq_lock), flags); |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 838 | /* |
| 839 | * We do this verification because the user can be deleted |
| 840 | * while a message is outstanding. |
| 841 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 842 | if ((intf->seq_table[seq].inuse) |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 843 | && (intf->seq_table[seq].seqid == seqid)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 844 | struct seq_table *ent = &(intf->seq_table[seq]); |
| 845 | |
| 846 | ent->inuse = 0; |
| 847 | msg = ent->recv_msg; |
| 848 | rv = 0; |
| 849 | } |
| 850 | spin_unlock_irqrestore(&(intf->seq_lock), flags); |
| 851 | |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 852 | if (msg) |
| 853 | deliver_err_response(msg, err); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 854 | |
| 855 | return rv; |
| 856 | } |
| 857 | |
| 858 | |
| 859 | int ipmi_create_user(unsigned int if_num, |
| 860 | struct ipmi_user_hndl *handler, |
| 861 | void *handler_data, |
| 862 | ipmi_user_t *user) |
| 863 | { |
| 864 | unsigned long flags; |
| 865 | ipmi_user_t new_user; |
| 866 | int rv = 0; |
| 867 | ipmi_smi_t intf; |
| 868 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 869 | /* |
| 870 | * There is no module usecount here, because it's not |
| 871 | * required. Since this can only be used by and called from |
| 872 | * other modules, they will implicitly use this module, and |
| 873 | * thus this can't be removed unless the other modules are |
| 874 | * removed. |
| 875 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 876 | |
| 877 | if (handler == NULL) |
| 878 | return -EINVAL; |
| 879 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 880 | /* |
| 881 | * Make sure the driver is actually initialized, this handles |
| 882 | * problems with initialization order. |
| 883 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 884 | if (!initialized) { |
| 885 | rv = ipmi_init_msghandler(); |
| 886 | if (rv) |
| 887 | return rv; |
| 888 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 889 | /* |
| 890 | * The init code doesn't return an error if it was turned |
| 891 | * off, but it won't initialize. Check that. |
| 892 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 893 | if (!initialized) |
| 894 | return -ENODEV; |
| 895 | } |
| 896 | |
| 897 | new_user = kmalloc(sizeof(*new_user), GFP_KERNEL); |
Corey Minyard | 8a3628d | 2006-03-31 02:30:40 -0800 | [diff] [blame] | 898 | if (!new_user) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 899 | return -ENOMEM; |
| 900 | |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 901 | mutex_lock(&ipmi_interfaces_mutex); |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 902 | list_for_each_entry_rcu(intf, &ipmi_interfaces, link) { |
| 903 | if (intf->intf_num == if_num) |
| 904 | goto found; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 905 | } |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 906 | /* Not found, return an error */ |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 907 | rv = -EINVAL; |
| 908 | goto out_kfree; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 909 | |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 910 | found: |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 911 | /* Note that each existing user holds a refcount to the interface. */ |
| 912 | kref_get(&intf->refcount); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 913 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 914 | kref_init(&new_user->refcount); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 915 | new_user->handler = handler; |
| 916 | new_user->handler_data = handler_data; |
| 917 | new_user->intf = intf; |
| 918 | new_user->gets_events = 0; |
| 919 | |
| 920 | if (!try_module_get(intf->handlers->owner)) { |
| 921 | rv = -ENODEV; |
Adrian Bunk | 5c98d29 | 2006-03-25 03:07:52 -0800 | [diff] [blame] | 922 | goto out_kref; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 923 | } |
| 924 | |
| 925 | if (intf->handlers->inc_usecount) { |
| 926 | rv = intf->handlers->inc_usecount(intf->send_info); |
| 927 | if (rv) { |
| 928 | module_put(intf->handlers->owner); |
Adrian Bunk | 5c98d29 | 2006-03-25 03:07:52 -0800 | [diff] [blame] | 929 | goto out_kref; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 930 | } |
| 931 | } |
| 932 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 933 | /* |
| 934 | * Hold the lock so intf->handlers is guaranteed to be good |
| 935 | * until now |
| 936 | */ |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 937 | mutex_unlock(&ipmi_interfaces_mutex); |
| 938 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 939 | new_user->valid = 1; |
| 940 | spin_lock_irqsave(&intf->seq_lock, flags); |
| 941 | list_add_rcu(&new_user->link, &intf->users); |
| 942 | spin_unlock_irqrestore(&intf->seq_lock, flags); |
| 943 | *user = new_user; |
| 944 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 945 | |
Adrian Bunk | 5c98d29 | 2006-03-25 03:07:52 -0800 | [diff] [blame] | 946 | out_kref: |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 947 | kref_put(&intf->refcount, intf_free); |
Adrian Bunk | 5c98d29 | 2006-03-25 03:07:52 -0800 | [diff] [blame] | 948 | out_kfree: |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 949 | mutex_unlock(&ipmi_interfaces_mutex); |
Adrian Bunk | 5c98d29 | 2006-03-25 03:07:52 -0800 | [diff] [blame] | 950 | kfree(new_user); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 951 | return rv; |
| 952 | } |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 953 | EXPORT_SYMBOL(ipmi_create_user); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 954 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 955 | static void free_user(struct kref *ref) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 956 | { |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 957 | ipmi_user_t user = container_of(ref, struct ipmi_user, refcount); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 958 | kfree(user); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 959 | } |
| 960 | |
| 961 | int ipmi_destroy_user(ipmi_user_t user) |
| 962 | { |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 963 | ipmi_smi_t intf = user->intf; |
| 964 | int i; |
| 965 | unsigned long flags; |
| 966 | struct cmd_rcvr *rcvr; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 967 | struct cmd_rcvr *rcvrs = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 968 | |
Corey Minyard | 8a3628d | 2006-03-31 02:30:40 -0800 | [diff] [blame] | 969 | user->valid = 0; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 970 | |
| 971 | /* Remove the user from the interface's sequence table. */ |
| 972 | spin_lock_irqsave(&intf->seq_lock, flags); |
| 973 | list_del_rcu(&user->link); |
| 974 | |
| 975 | for (i = 0; i < IPMI_IPMB_NUM_SEQ; i++) { |
| 976 | if (intf->seq_table[i].inuse |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 977 | && (intf->seq_table[i].recv_msg->user == user)) { |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 978 | intf->seq_table[i].inuse = 0; |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 979 | ipmi_free_recv_msg(intf->seq_table[i].recv_msg); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 980 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 981 | } |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 982 | spin_unlock_irqrestore(&intf->seq_lock, flags); |
| 983 | |
| 984 | /* |
| 985 | * Remove the user from the command receiver's table. First |
| 986 | * we build a list of everything (not using the standard link, |
| 987 | * since other things may be using it till we do |
| 988 | * synchronize_rcu()) then free everything in that list. |
| 989 | */ |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 990 | mutex_lock(&intf->cmd_rcvrs_mutex); |
Paul E. McKenney | 066bb8d | 2006-01-06 00:19:53 -0800 | [diff] [blame] | 991 | list_for_each_entry_rcu(rcvr, &intf->cmd_rcvrs, link) { |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 992 | if (rcvr->user == user) { |
| 993 | list_del_rcu(&rcvr->link); |
| 994 | rcvr->next = rcvrs; |
| 995 | rcvrs = rcvr; |
| 996 | } |
| 997 | } |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 998 | mutex_unlock(&intf->cmd_rcvrs_mutex); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 999 | synchronize_rcu(); |
| 1000 | while (rcvrs) { |
| 1001 | rcvr = rcvrs; |
| 1002 | rcvrs = rcvr->next; |
| 1003 | kfree(rcvr); |
| 1004 | } |
| 1005 | |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 1006 | mutex_lock(&ipmi_interfaces_mutex); |
| 1007 | if (intf->handlers) { |
| 1008 | module_put(intf->handlers->owner); |
| 1009 | if (intf->handlers->dec_usecount) |
| 1010 | intf->handlers->dec_usecount(intf->send_info); |
| 1011 | } |
| 1012 | mutex_unlock(&ipmi_interfaces_mutex); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 1013 | |
| 1014 | kref_put(&intf->refcount, intf_free); |
| 1015 | |
| 1016 | kref_put(&user->refcount, free_user); |
| 1017 | |
Corey Minyard | 8a3628d | 2006-03-31 02:30:40 -0800 | [diff] [blame] | 1018 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1019 | } |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 1020 | EXPORT_SYMBOL(ipmi_destroy_user); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1021 | |
| 1022 | void ipmi_get_version(ipmi_user_t user, |
| 1023 | unsigned char *major, |
| 1024 | unsigned char *minor) |
| 1025 | { |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 1026 | *major = user->intf->ipmi_version_major; |
| 1027 | *minor = user->intf->ipmi_version_minor; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1028 | } |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 1029 | EXPORT_SYMBOL(ipmi_get_version); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1030 | |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 1031 | int ipmi_set_my_address(ipmi_user_t user, |
| 1032 | unsigned int channel, |
| 1033 | unsigned char address) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1034 | { |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 1035 | if (channel >= IPMI_MAX_CHANNELS) |
| 1036 | return -EINVAL; |
| 1037 | user->intf->channels[channel].address = address; |
| 1038 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1039 | } |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 1040 | EXPORT_SYMBOL(ipmi_set_my_address); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1041 | |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 1042 | int ipmi_get_my_address(ipmi_user_t user, |
| 1043 | unsigned int channel, |
| 1044 | unsigned char *address) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1045 | { |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 1046 | if (channel >= IPMI_MAX_CHANNELS) |
| 1047 | return -EINVAL; |
| 1048 | *address = user->intf->channels[channel].address; |
| 1049 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1050 | } |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 1051 | EXPORT_SYMBOL(ipmi_get_my_address); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1052 | |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 1053 | int ipmi_set_my_LUN(ipmi_user_t user, |
| 1054 | unsigned int channel, |
| 1055 | unsigned char LUN) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1056 | { |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 1057 | if (channel >= IPMI_MAX_CHANNELS) |
| 1058 | return -EINVAL; |
| 1059 | user->intf->channels[channel].lun = LUN & 0x3; |
| 1060 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1061 | } |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 1062 | EXPORT_SYMBOL(ipmi_set_my_LUN); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1063 | |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 1064 | int ipmi_get_my_LUN(ipmi_user_t user, |
| 1065 | unsigned int channel, |
| 1066 | unsigned char *address) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1067 | { |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 1068 | if (channel >= IPMI_MAX_CHANNELS) |
| 1069 | return -EINVAL; |
| 1070 | *address = user->intf->channels[channel].lun; |
| 1071 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1072 | } |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 1073 | EXPORT_SYMBOL(ipmi_get_my_LUN); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1074 | |
Corey Minyard | b967513 | 2006-12-06 20:41:02 -0800 | [diff] [blame] | 1075 | int ipmi_get_maintenance_mode(ipmi_user_t user) |
| 1076 | { |
| 1077 | int mode; |
| 1078 | unsigned long flags; |
| 1079 | |
| 1080 | spin_lock_irqsave(&user->intf->maintenance_mode_lock, flags); |
| 1081 | mode = user->intf->maintenance_mode; |
| 1082 | spin_unlock_irqrestore(&user->intf->maintenance_mode_lock, flags); |
| 1083 | |
| 1084 | return mode; |
| 1085 | } |
| 1086 | EXPORT_SYMBOL(ipmi_get_maintenance_mode); |
| 1087 | |
| 1088 | static void maintenance_mode_update(ipmi_smi_t intf) |
| 1089 | { |
| 1090 | if (intf->handlers->set_maintenance_mode) |
| 1091 | intf->handlers->set_maintenance_mode( |
| 1092 | intf->send_info, intf->maintenance_mode_enable); |
| 1093 | } |
| 1094 | |
| 1095 | int ipmi_set_maintenance_mode(ipmi_user_t user, int mode) |
| 1096 | { |
| 1097 | int rv = 0; |
| 1098 | unsigned long flags; |
| 1099 | ipmi_smi_t intf = user->intf; |
| 1100 | |
| 1101 | spin_lock_irqsave(&intf->maintenance_mode_lock, flags); |
| 1102 | if (intf->maintenance_mode != mode) { |
| 1103 | switch (mode) { |
| 1104 | case IPMI_MAINTENANCE_MODE_AUTO: |
| 1105 | intf->maintenance_mode = mode; |
| 1106 | intf->maintenance_mode_enable |
| 1107 | = (intf->auto_maintenance_timeout > 0); |
| 1108 | break; |
| 1109 | |
| 1110 | case IPMI_MAINTENANCE_MODE_OFF: |
| 1111 | intf->maintenance_mode = mode; |
| 1112 | intf->maintenance_mode_enable = 0; |
| 1113 | break; |
| 1114 | |
| 1115 | case IPMI_MAINTENANCE_MODE_ON: |
| 1116 | intf->maintenance_mode = mode; |
| 1117 | intf->maintenance_mode_enable = 1; |
| 1118 | break; |
| 1119 | |
| 1120 | default: |
| 1121 | rv = -EINVAL; |
| 1122 | goto out_unlock; |
| 1123 | } |
| 1124 | |
| 1125 | maintenance_mode_update(intf); |
| 1126 | } |
| 1127 | out_unlock: |
| 1128 | spin_unlock_irqrestore(&intf->maintenance_mode_lock, flags); |
| 1129 | |
| 1130 | return rv; |
| 1131 | } |
| 1132 | EXPORT_SYMBOL(ipmi_set_maintenance_mode); |
| 1133 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1134 | int ipmi_set_gets_events(ipmi_user_t user, int val) |
| 1135 | { |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 1136 | unsigned long flags; |
| 1137 | ipmi_smi_t intf = user->intf; |
| 1138 | struct ipmi_recv_msg *msg, *msg2; |
| 1139 | struct list_head msgs; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1140 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 1141 | INIT_LIST_HEAD(&msgs); |
| 1142 | |
| 1143 | spin_lock_irqsave(&intf->events_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1144 | user->gets_events = val; |
| 1145 | |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 1146 | if (intf->delivering_events) |
| 1147 | /* |
| 1148 | * Another thread is delivering events for this, so |
| 1149 | * let it handle any new events. |
| 1150 | */ |
| 1151 | goto out; |
| 1152 | |
| 1153 | /* Deliver any queued events. */ |
| 1154 | while (user->gets_events && !list_empty(&intf->waiting_events)) { |
Akinobu Mita | 179e091 | 2006-06-26 00:24:41 -0700 | [diff] [blame] | 1155 | list_for_each_entry_safe(msg, msg2, &intf->waiting_events, link) |
| 1156 | list_move_tail(&msg->link, &msgs); |
Corey Minyard | 4791c03 | 2006-04-10 22:54:31 -0700 | [diff] [blame] | 1157 | intf->waiting_events_count = 0; |
Corey Minyard | 87ebd06 | 2008-04-29 01:01:04 -0700 | [diff] [blame] | 1158 | if (intf->event_msg_printed) { |
| 1159 | printk(KERN_WARNING PFX "Event queue no longer" |
| 1160 | " full\n"); |
| 1161 | intf->event_msg_printed = 0; |
| 1162 | } |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 1163 | |
| 1164 | intf->delivering_events = 1; |
| 1165 | spin_unlock_irqrestore(&intf->events_lock, flags); |
| 1166 | |
| 1167 | list_for_each_entry_safe(msg, msg2, &msgs, link) { |
| 1168 | msg->user = user; |
| 1169 | kref_get(&user->refcount); |
| 1170 | deliver_response(msg); |
| 1171 | } |
| 1172 | |
| 1173 | spin_lock_irqsave(&intf->events_lock, flags); |
| 1174 | intf->delivering_events = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1175 | } |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 1176 | |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 1177 | out: |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 1178 | spin_unlock_irqrestore(&intf->events_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1179 | |
| 1180 | return 0; |
| 1181 | } |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 1182 | EXPORT_SYMBOL(ipmi_set_gets_events); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1183 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 1184 | static struct cmd_rcvr *find_cmd_rcvr(ipmi_smi_t intf, |
| 1185 | unsigned char netfn, |
Corey Minyard | c69c312 | 2006-09-30 23:27:56 -0700 | [diff] [blame] | 1186 | unsigned char cmd, |
| 1187 | unsigned char chan) |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 1188 | { |
| 1189 | struct cmd_rcvr *rcvr; |
| 1190 | |
| 1191 | list_for_each_entry_rcu(rcvr, &intf->cmd_rcvrs, link) { |
Corey Minyard | c69c312 | 2006-09-30 23:27:56 -0700 | [diff] [blame] | 1192 | if ((rcvr->netfn == netfn) && (rcvr->cmd == cmd) |
| 1193 | && (rcvr->chans & (1 << chan))) |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 1194 | return rcvr; |
| 1195 | } |
| 1196 | return NULL; |
| 1197 | } |
| 1198 | |
Corey Minyard | c69c312 | 2006-09-30 23:27:56 -0700 | [diff] [blame] | 1199 | static int is_cmd_rcvr_exclusive(ipmi_smi_t intf, |
| 1200 | unsigned char netfn, |
| 1201 | unsigned char cmd, |
| 1202 | unsigned int chans) |
| 1203 | { |
| 1204 | struct cmd_rcvr *rcvr; |
| 1205 | |
| 1206 | list_for_each_entry_rcu(rcvr, &intf->cmd_rcvrs, link) { |
| 1207 | if ((rcvr->netfn == netfn) && (rcvr->cmd == cmd) |
| 1208 | && (rcvr->chans & chans)) |
| 1209 | return 0; |
| 1210 | } |
| 1211 | return 1; |
| 1212 | } |
| 1213 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1214 | int ipmi_register_for_cmd(ipmi_user_t user, |
| 1215 | unsigned char netfn, |
Corey Minyard | c69c312 | 2006-09-30 23:27:56 -0700 | [diff] [blame] | 1216 | unsigned char cmd, |
| 1217 | unsigned int chans) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1218 | { |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 1219 | ipmi_smi_t intf = user->intf; |
| 1220 | struct cmd_rcvr *rcvr; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 1221 | int rv = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1222 | |
| 1223 | |
| 1224 | rcvr = kmalloc(sizeof(*rcvr), GFP_KERNEL); |
Corey Minyard | 8a3628d | 2006-03-31 02:30:40 -0800 | [diff] [blame] | 1225 | if (!rcvr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1226 | return -ENOMEM; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 1227 | rcvr->cmd = cmd; |
| 1228 | rcvr->netfn = netfn; |
Corey Minyard | c69c312 | 2006-09-30 23:27:56 -0700 | [diff] [blame] | 1229 | rcvr->chans = chans; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 1230 | rcvr->user = user; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1231 | |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 1232 | mutex_lock(&intf->cmd_rcvrs_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1233 | /* Make sure the command/netfn is not already registered. */ |
Corey Minyard | c69c312 | 2006-09-30 23:27:56 -0700 | [diff] [blame] | 1234 | if (!is_cmd_rcvr_exclusive(intf, netfn, cmd, chans)) { |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 1235 | rv = -EBUSY; |
| 1236 | goto out_unlock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1237 | } |
| 1238 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 1239 | list_add_rcu(&rcvr->link, &intf->cmd_rcvrs); |
Corey Minyard | 877197e | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 1240 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 1241 | out_unlock: |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 1242 | mutex_unlock(&intf->cmd_rcvrs_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1243 | if (rv) |
| 1244 | kfree(rcvr); |
| 1245 | |
| 1246 | return rv; |
| 1247 | } |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 1248 | EXPORT_SYMBOL(ipmi_register_for_cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1249 | |
| 1250 | int ipmi_unregister_for_cmd(ipmi_user_t user, |
| 1251 | unsigned char netfn, |
Corey Minyard | c69c312 | 2006-09-30 23:27:56 -0700 | [diff] [blame] | 1252 | unsigned char cmd, |
| 1253 | unsigned int chans) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1254 | { |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 1255 | ipmi_smi_t intf = user->intf; |
| 1256 | struct cmd_rcvr *rcvr; |
Corey Minyard | c69c312 | 2006-09-30 23:27:56 -0700 | [diff] [blame] | 1257 | struct cmd_rcvr *rcvrs = NULL; |
| 1258 | int i, rv = -ENOENT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1259 | |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 1260 | mutex_lock(&intf->cmd_rcvrs_mutex); |
Corey Minyard | c69c312 | 2006-09-30 23:27:56 -0700 | [diff] [blame] | 1261 | for (i = 0; i < IPMI_NUM_CHANNELS; i++) { |
| 1262 | if (((1 << i) & chans) == 0) |
| 1263 | continue; |
| 1264 | rcvr = find_cmd_rcvr(intf, netfn, cmd, i); |
| 1265 | if (rcvr == NULL) |
| 1266 | continue; |
| 1267 | if (rcvr->user == user) { |
| 1268 | rv = 0; |
| 1269 | rcvr->chans &= ~chans; |
| 1270 | if (rcvr->chans == 0) { |
| 1271 | list_del_rcu(&rcvr->link); |
| 1272 | rcvr->next = rcvrs; |
| 1273 | rcvrs = rcvr; |
| 1274 | } |
| 1275 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1276 | } |
Corey Minyard | c69c312 | 2006-09-30 23:27:56 -0700 | [diff] [blame] | 1277 | mutex_unlock(&intf->cmd_rcvrs_mutex); |
| 1278 | synchronize_rcu(); |
| 1279 | while (rcvrs) { |
| 1280 | rcvr = rcvrs; |
| 1281 | rcvrs = rcvr->next; |
| 1282 | kfree(rcvr); |
| 1283 | } |
| 1284 | return rv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1285 | } |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 1286 | EXPORT_SYMBOL(ipmi_unregister_for_cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1287 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1288 | static unsigned char |
| 1289 | ipmb_checksum(unsigned char *data, int size) |
| 1290 | { |
| 1291 | unsigned char csum = 0; |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 1292 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1293 | for (; size > 0; size--, data++) |
| 1294 | csum += *data; |
| 1295 | |
| 1296 | return -csum; |
| 1297 | } |
| 1298 | |
| 1299 | static inline void format_ipmb_msg(struct ipmi_smi_msg *smi_msg, |
| 1300 | struct kernel_ipmi_msg *msg, |
| 1301 | struct ipmi_ipmb_addr *ipmb_addr, |
| 1302 | long msgid, |
| 1303 | unsigned char ipmb_seq, |
| 1304 | int broadcast, |
| 1305 | unsigned char source_address, |
| 1306 | unsigned char source_lun) |
| 1307 | { |
| 1308 | int i = broadcast; |
| 1309 | |
| 1310 | /* Format the IPMB header data. */ |
| 1311 | smi_msg->data[0] = (IPMI_NETFN_APP_REQUEST << 2); |
| 1312 | smi_msg->data[1] = IPMI_SEND_MSG_CMD; |
| 1313 | smi_msg->data[2] = ipmb_addr->channel; |
| 1314 | if (broadcast) |
| 1315 | smi_msg->data[3] = 0; |
| 1316 | smi_msg->data[i+3] = ipmb_addr->slave_addr; |
| 1317 | smi_msg->data[i+4] = (msg->netfn << 2) | (ipmb_addr->lun & 0x3); |
| 1318 | smi_msg->data[i+5] = ipmb_checksum(&(smi_msg->data[i+3]), 2); |
| 1319 | smi_msg->data[i+6] = source_address; |
| 1320 | smi_msg->data[i+7] = (ipmb_seq << 2) | source_lun; |
| 1321 | smi_msg->data[i+8] = msg->cmd; |
| 1322 | |
| 1323 | /* Now tack on the data to the message. */ |
| 1324 | if (msg->data_len > 0) |
| 1325 | memcpy(&(smi_msg->data[i+9]), msg->data, |
| 1326 | msg->data_len); |
| 1327 | smi_msg->data_size = msg->data_len + 9; |
| 1328 | |
| 1329 | /* Now calculate the checksum and tack it on. */ |
| 1330 | smi_msg->data[i+smi_msg->data_size] |
| 1331 | = ipmb_checksum(&(smi_msg->data[i+6]), |
| 1332 | smi_msg->data_size-6); |
| 1333 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 1334 | /* |
| 1335 | * Add on the checksum size and the offset from the |
| 1336 | * broadcast. |
| 1337 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1338 | smi_msg->data_size += 1 + i; |
| 1339 | |
| 1340 | smi_msg->msgid = msgid; |
| 1341 | } |
| 1342 | |
| 1343 | static inline void format_lan_msg(struct ipmi_smi_msg *smi_msg, |
| 1344 | struct kernel_ipmi_msg *msg, |
| 1345 | struct ipmi_lan_addr *lan_addr, |
| 1346 | long msgid, |
| 1347 | unsigned char ipmb_seq, |
| 1348 | unsigned char source_lun) |
| 1349 | { |
| 1350 | /* Format the IPMB header data. */ |
| 1351 | smi_msg->data[0] = (IPMI_NETFN_APP_REQUEST << 2); |
| 1352 | smi_msg->data[1] = IPMI_SEND_MSG_CMD; |
| 1353 | smi_msg->data[2] = lan_addr->channel; |
| 1354 | smi_msg->data[3] = lan_addr->session_handle; |
| 1355 | smi_msg->data[4] = lan_addr->remote_SWID; |
| 1356 | smi_msg->data[5] = (msg->netfn << 2) | (lan_addr->lun & 0x3); |
| 1357 | smi_msg->data[6] = ipmb_checksum(&(smi_msg->data[4]), 2); |
| 1358 | smi_msg->data[7] = lan_addr->local_SWID; |
| 1359 | smi_msg->data[8] = (ipmb_seq << 2) | source_lun; |
| 1360 | smi_msg->data[9] = msg->cmd; |
| 1361 | |
| 1362 | /* Now tack on the data to the message. */ |
| 1363 | if (msg->data_len > 0) |
| 1364 | memcpy(&(smi_msg->data[10]), msg->data, |
| 1365 | msg->data_len); |
| 1366 | smi_msg->data_size = msg->data_len + 10; |
| 1367 | |
| 1368 | /* Now calculate the checksum and tack it on. */ |
| 1369 | smi_msg->data[smi_msg->data_size] |
| 1370 | = ipmb_checksum(&(smi_msg->data[7]), |
| 1371 | smi_msg->data_size-7); |
| 1372 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 1373 | /* |
| 1374 | * Add on the checksum size and the offset from the |
| 1375 | * broadcast. |
| 1376 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1377 | smi_msg->data_size += 1; |
| 1378 | |
| 1379 | smi_msg->msgid = msgid; |
| 1380 | } |
| 1381 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 1382 | /* |
| 1383 | * Separate from ipmi_request so that the user does not have to be |
| 1384 | * supplied in certain circumstances (mainly at panic time). If |
| 1385 | * messages are supplied, they will be freed, even if an error |
| 1386 | * occurs. |
| 1387 | */ |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 1388 | static int i_ipmi_request(ipmi_user_t user, |
| 1389 | ipmi_smi_t intf, |
| 1390 | struct ipmi_addr *addr, |
| 1391 | long msgid, |
| 1392 | struct kernel_ipmi_msg *msg, |
| 1393 | void *user_msg_data, |
| 1394 | void *supplied_smi, |
| 1395 | struct ipmi_recv_msg *supplied_recv, |
| 1396 | int priority, |
| 1397 | unsigned char source_address, |
| 1398 | unsigned char source_lun, |
| 1399 | int retries, |
| 1400 | unsigned int retry_time_ms) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1401 | { |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 1402 | int rv = 0; |
| 1403 | struct ipmi_smi_msg *smi_msg; |
| 1404 | struct ipmi_recv_msg *recv_msg; |
| 1405 | unsigned long flags; |
| 1406 | struct ipmi_smi_handlers *handlers; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1407 | |
| 1408 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 1409 | if (supplied_recv) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1410 | recv_msg = supplied_recv; |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 1411 | else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1412 | recv_msg = ipmi_alloc_recv_msg(); |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 1413 | if (recv_msg == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1414 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1415 | } |
| 1416 | recv_msg->user_msg_data = user_msg_data; |
| 1417 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 1418 | if (supplied_smi) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1419 | smi_msg = (struct ipmi_smi_msg *) supplied_smi; |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 1420 | else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1421 | smi_msg = ipmi_alloc_smi_msg(); |
| 1422 | if (smi_msg == NULL) { |
| 1423 | ipmi_free_recv_msg(recv_msg); |
| 1424 | return -ENOMEM; |
| 1425 | } |
| 1426 | } |
| 1427 | |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 1428 | rcu_read_lock(); |
| 1429 | handlers = intf->handlers; |
| 1430 | if (!handlers) { |
| 1431 | rv = -ENODEV; |
| 1432 | goto out_err; |
| 1433 | } |
| 1434 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1435 | recv_msg->user = user; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 1436 | if (user) |
| 1437 | kref_get(&user->refcount); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1438 | recv_msg->msgid = msgid; |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 1439 | /* |
| 1440 | * Store the message to send in the receive message so timeout |
| 1441 | * responses can get the proper response data. |
| 1442 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1443 | recv_msg->msg = *msg; |
| 1444 | |
| 1445 | if (addr->addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) { |
| 1446 | struct ipmi_system_interface_addr *smi_addr; |
| 1447 | |
| 1448 | if (msg->netfn & 1) { |
| 1449 | /* Responses are not allowed to the SMI. */ |
| 1450 | rv = -EINVAL; |
| 1451 | goto out_err; |
| 1452 | } |
| 1453 | |
| 1454 | smi_addr = (struct ipmi_system_interface_addr *) addr; |
| 1455 | if (smi_addr->lun > 3) { |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 1456 | ipmi_inc_stat(intf, sent_invalid_commands); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1457 | rv = -EINVAL; |
| 1458 | goto out_err; |
| 1459 | } |
| 1460 | |
| 1461 | memcpy(&recv_msg->addr, smi_addr, sizeof(*smi_addr)); |
| 1462 | |
| 1463 | if ((msg->netfn == IPMI_NETFN_APP_REQUEST) |
| 1464 | && ((msg->cmd == IPMI_SEND_MSG_CMD) |
| 1465 | || (msg->cmd == IPMI_GET_MSG_CMD) |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 1466 | || (msg->cmd == IPMI_READ_EVENT_MSG_BUFFER_CMD))) { |
| 1467 | /* |
| 1468 | * We don't let the user do these, since we manage |
| 1469 | * the sequence numbers. |
| 1470 | */ |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 1471 | ipmi_inc_stat(intf, sent_invalid_commands); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1472 | rv = -EINVAL; |
| 1473 | goto out_err; |
| 1474 | } |
| 1475 | |
Corey Minyard | b967513 | 2006-12-06 20:41:02 -0800 | [diff] [blame] | 1476 | if (((msg->netfn == IPMI_NETFN_APP_REQUEST) |
| 1477 | && ((msg->cmd == IPMI_COLD_RESET_CMD) |
| 1478 | || (msg->cmd == IPMI_WARM_RESET_CMD))) |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 1479 | || (msg->netfn == IPMI_NETFN_FIRMWARE_REQUEST)) { |
Corey Minyard | b967513 | 2006-12-06 20:41:02 -0800 | [diff] [blame] | 1480 | spin_lock_irqsave(&intf->maintenance_mode_lock, flags); |
| 1481 | intf->auto_maintenance_timeout |
| 1482 | = IPMI_MAINTENANCE_MODE_TIMEOUT; |
| 1483 | if (!intf->maintenance_mode |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 1484 | && !intf->maintenance_mode_enable) { |
Corey Minyard | b967513 | 2006-12-06 20:41:02 -0800 | [diff] [blame] | 1485 | intf->maintenance_mode_enable = 1; |
| 1486 | maintenance_mode_update(intf); |
| 1487 | } |
| 1488 | spin_unlock_irqrestore(&intf->maintenance_mode_lock, |
| 1489 | flags); |
| 1490 | } |
| 1491 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1492 | if ((msg->data_len + 2) > IPMI_MAX_MSG_LENGTH) { |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 1493 | ipmi_inc_stat(intf, sent_invalid_commands); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1494 | rv = -EMSGSIZE; |
| 1495 | goto out_err; |
| 1496 | } |
| 1497 | |
| 1498 | smi_msg->data[0] = (msg->netfn << 2) | (smi_addr->lun & 0x3); |
| 1499 | smi_msg->data[1] = msg->cmd; |
| 1500 | smi_msg->msgid = msgid; |
| 1501 | smi_msg->user_data = recv_msg; |
| 1502 | if (msg->data_len > 0) |
| 1503 | memcpy(&(smi_msg->data[2]), msg->data, msg->data_len); |
| 1504 | smi_msg->data_size = msg->data_len + 2; |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 1505 | ipmi_inc_stat(intf, sent_local_commands); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1506 | } else if ((addr->addr_type == IPMI_IPMB_ADDR_TYPE) |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 1507 | || (addr->addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1508 | struct ipmi_ipmb_addr *ipmb_addr; |
| 1509 | unsigned char ipmb_seq; |
| 1510 | long seqid; |
| 1511 | int broadcast = 0; |
| 1512 | |
KAMBAROV, ZAUR | 9c101fd | 2005-06-28 20:45:08 -0700 | [diff] [blame] | 1513 | if (addr->channel >= IPMI_MAX_CHANNELS) { |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 1514 | ipmi_inc_stat(intf, sent_invalid_commands); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1515 | rv = -EINVAL; |
| 1516 | goto out_err; |
| 1517 | } |
| 1518 | |
| 1519 | if (intf->channels[addr->channel].medium |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 1520 | != IPMI_CHANNEL_MEDIUM_IPMB) { |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 1521 | ipmi_inc_stat(intf, sent_invalid_commands); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1522 | rv = -EINVAL; |
| 1523 | goto out_err; |
| 1524 | } |
| 1525 | |
| 1526 | if (retries < 0) { |
| 1527 | if (addr->addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE) |
| 1528 | retries = 0; /* Don't retry broadcasts. */ |
| 1529 | else |
| 1530 | retries = 4; |
| 1531 | } |
| 1532 | if (addr->addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE) { |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 1533 | /* |
| 1534 | * Broadcasts add a zero at the beginning of the |
| 1535 | * message, but otherwise is the same as an IPMB |
| 1536 | * address. |
| 1537 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1538 | addr->addr_type = IPMI_IPMB_ADDR_TYPE; |
| 1539 | broadcast = 1; |
| 1540 | } |
| 1541 | |
| 1542 | |
| 1543 | /* Default to 1 second retries. */ |
| 1544 | if (retry_time_ms == 0) |
| 1545 | retry_time_ms = 1000; |
| 1546 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 1547 | /* |
| 1548 | * 9 for the header and 1 for the checksum, plus |
| 1549 | * possibly one for the broadcast. |
| 1550 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1551 | if ((msg->data_len + 10 + broadcast) > IPMI_MAX_MSG_LENGTH) { |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 1552 | ipmi_inc_stat(intf, sent_invalid_commands); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1553 | rv = -EMSGSIZE; |
| 1554 | goto out_err; |
| 1555 | } |
| 1556 | |
| 1557 | ipmb_addr = (struct ipmi_ipmb_addr *) addr; |
| 1558 | if (ipmb_addr->lun > 3) { |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 1559 | ipmi_inc_stat(intf, sent_invalid_commands); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1560 | rv = -EINVAL; |
| 1561 | goto out_err; |
| 1562 | } |
| 1563 | |
| 1564 | memcpy(&recv_msg->addr, ipmb_addr, sizeof(*ipmb_addr)); |
| 1565 | |
| 1566 | if (recv_msg->msg.netfn & 0x1) { |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 1567 | /* |
| 1568 | * It's a response, so use the user's sequence |
| 1569 | * from msgid. |
| 1570 | */ |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 1571 | ipmi_inc_stat(intf, sent_ipmb_responses); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1572 | format_ipmb_msg(smi_msg, msg, ipmb_addr, msgid, |
| 1573 | msgid, broadcast, |
| 1574 | source_address, source_lun); |
| 1575 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 1576 | /* |
| 1577 | * Save the receive message so we can use it |
| 1578 | * to deliver the response. |
| 1579 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1580 | smi_msg->user_data = recv_msg; |
| 1581 | } else { |
| 1582 | /* It's a command, so get a sequence for it. */ |
| 1583 | |
| 1584 | spin_lock_irqsave(&(intf->seq_lock), flags); |
| 1585 | |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 1586 | ipmi_inc_stat(intf, sent_ipmb_commands); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1587 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 1588 | /* |
| 1589 | * Create a sequence number with a 1 second |
| 1590 | * timeout and 4 retries. |
| 1591 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1592 | rv = intf_next_seq(intf, |
| 1593 | recv_msg, |
| 1594 | retry_time_ms, |
| 1595 | retries, |
| 1596 | broadcast, |
| 1597 | &ipmb_seq, |
| 1598 | &seqid); |
| 1599 | if (rv) { |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 1600 | /* |
| 1601 | * We have used up all the sequence numbers, |
| 1602 | * probably, so abort. |
| 1603 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1604 | spin_unlock_irqrestore(&(intf->seq_lock), |
| 1605 | flags); |
| 1606 | goto out_err; |
| 1607 | } |
| 1608 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 1609 | /* |
| 1610 | * Store the sequence number in the message, |
| 1611 | * so that when the send message response |
| 1612 | * comes back we can start the timer. |
| 1613 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1614 | format_ipmb_msg(smi_msg, msg, ipmb_addr, |
| 1615 | STORE_SEQ_IN_MSGID(ipmb_seq, seqid), |
| 1616 | ipmb_seq, broadcast, |
| 1617 | source_address, source_lun); |
| 1618 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 1619 | /* |
| 1620 | * Copy the message into the recv message data, so we |
| 1621 | * can retransmit it later if necessary. |
| 1622 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1623 | memcpy(recv_msg->msg_data, smi_msg->data, |
| 1624 | smi_msg->data_size); |
| 1625 | recv_msg->msg.data = recv_msg->msg_data; |
| 1626 | recv_msg->msg.data_len = smi_msg->data_size; |
| 1627 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 1628 | /* |
| 1629 | * We don't unlock until here, because we need |
| 1630 | * to copy the completed message into the |
| 1631 | * recv_msg before we release the lock. |
| 1632 | * Otherwise, race conditions may bite us. I |
| 1633 | * know that's pretty paranoid, but I prefer |
| 1634 | * to be correct. |
| 1635 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1636 | spin_unlock_irqrestore(&(intf->seq_lock), flags); |
| 1637 | } |
| 1638 | } else if (addr->addr_type == IPMI_LAN_ADDR_TYPE) { |
| 1639 | struct ipmi_lan_addr *lan_addr; |
| 1640 | unsigned char ipmb_seq; |
| 1641 | long seqid; |
| 1642 | |
Jayachandran C | 12fc1d7 | 2006-02-03 03:04:51 -0800 | [diff] [blame] | 1643 | if (addr->channel >= IPMI_MAX_CHANNELS) { |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 1644 | ipmi_inc_stat(intf, sent_invalid_commands); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1645 | rv = -EINVAL; |
| 1646 | goto out_err; |
| 1647 | } |
| 1648 | |
| 1649 | if ((intf->channels[addr->channel].medium |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 1650 | != IPMI_CHANNEL_MEDIUM_8023LAN) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1651 | && (intf->channels[addr->channel].medium |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 1652 | != IPMI_CHANNEL_MEDIUM_ASYNC)) { |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 1653 | ipmi_inc_stat(intf, sent_invalid_commands); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1654 | rv = -EINVAL; |
| 1655 | goto out_err; |
| 1656 | } |
| 1657 | |
| 1658 | retries = 4; |
| 1659 | |
| 1660 | /* Default to 1 second retries. */ |
| 1661 | if (retry_time_ms == 0) |
| 1662 | retry_time_ms = 1000; |
| 1663 | |
| 1664 | /* 11 for the header and 1 for the checksum. */ |
| 1665 | if ((msg->data_len + 12) > IPMI_MAX_MSG_LENGTH) { |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 1666 | ipmi_inc_stat(intf, sent_invalid_commands); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1667 | rv = -EMSGSIZE; |
| 1668 | goto out_err; |
| 1669 | } |
| 1670 | |
| 1671 | lan_addr = (struct ipmi_lan_addr *) addr; |
| 1672 | if (lan_addr->lun > 3) { |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 1673 | ipmi_inc_stat(intf, sent_invalid_commands); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1674 | rv = -EINVAL; |
| 1675 | goto out_err; |
| 1676 | } |
| 1677 | |
| 1678 | memcpy(&recv_msg->addr, lan_addr, sizeof(*lan_addr)); |
| 1679 | |
| 1680 | if (recv_msg->msg.netfn & 0x1) { |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 1681 | /* |
| 1682 | * It's a response, so use the user's sequence |
| 1683 | * from msgid. |
| 1684 | */ |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 1685 | ipmi_inc_stat(intf, sent_lan_responses); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1686 | format_lan_msg(smi_msg, msg, lan_addr, msgid, |
| 1687 | msgid, source_lun); |
| 1688 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 1689 | /* |
| 1690 | * Save the receive message so we can use it |
| 1691 | * to deliver the response. |
| 1692 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1693 | smi_msg->user_data = recv_msg; |
| 1694 | } else { |
| 1695 | /* It's a command, so get a sequence for it. */ |
| 1696 | |
| 1697 | spin_lock_irqsave(&(intf->seq_lock), flags); |
| 1698 | |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 1699 | ipmi_inc_stat(intf, sent_lan_commands); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1700 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 1701 | /* |
| 1702 | * Create a sequence number with a 1 second |
| 1703 | * timeout and 4 retries. |
| 1704 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1705 | rv = intf_next_seq(intf, |
| 1706 | recv_msg, |
| 1707 | retry_time_ms, |
| 1708 | retries, |
| 1709 | 0, |
| 1710 | &ipmb_seq, |
| 1711 | &seqid); |
| 1712 | if (rv) { |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 1713 | /* |
| 1714 | * We have used up all the sequence numbers, |
| 1715 | * probably, so abort. |
| 1716 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1717 | spin_unlock_irqrestore(&(intf->seq_lock), |
| 1718 | flags); |
| 1719 | goto out_err; |
| 1720 | } |
| 1721 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 1722 | /* |
| 1723 | * Store the sequence number in the message, |
| 1724 | * so that when the send message response |
| 1725 | * comes back we can start the timer. |
| 1726 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1727 | format_lan_msg(smi_msg, msg, lan_addr, |
| 1728 | STORE_SEQ_IN_MSGID(ipmb_seq, seqid), |
| 1729 | ipmb_seq, source_lun); |
| 1730 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 1731 | /* |
| 1732 | * Copy the message into the recv message data, so we |
| 1733 | * can retransmit it later if necessary. |
| 1734 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1735 | memcpy(recv_msg->msg_data, smi_msg->data, |
| 1736 | smi_msg->data_size); |
| 1737 | recv_msg->msg.data = recv_msg->msg_data; |
| 1738 | recv_msg->msg.data_len = smi_msg->data_size; |
| 1739 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 1740 | /* |
| 1741 | * We don't unlock until here, because we need |
| 1742 | * to copy the completed message into the |
| 1743 | * recv_msg before we release the lock. |
| 1744 | * Otherwise, race conditions may bite us. I |
| 1745 | * know that's pretty paranoid, but I prefer |
| 1746 | * to be correct. |
| 1747 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1748 | spin_unlock_irqrestore(&(intf->seq_lock), flags); |
| 1749 | } |
| 1750 | } else { |
| 1751 | /* Unknown address type. */ |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 1752 | ipmi_inc_stat(intf, sent_invalid_commands); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1753 | rv = -EINVAL; |
| 1754 | goto out_err; |
| 1755 | } |
| 1756 | |
| 1757 | #ifdef DEBUG_MSGING |
| 1758 | { |
| 1759 | int m; |
Corey Minyard | e8b3361 | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 1760 | for (m = 0; m < smi_msg->data_size; m++) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1761 | printk(" %2.2x", smi_msg->data[m]); |
| 1762 | printk("\n"); |
| 1763 | } |
| 1764 | #endif |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 1765 | |
| 1766 | handlers->sender(intf->send_info, smi_msg, priority); |
| 1767 | rcu_read_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1768 | |
| 1769 | return 0; |
| 1770 | |
| 1771 | out_err: |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 1772 | rcu_read_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1773 | ipmi_free_smi_msg(smi_msg); |
| 1774 | ipmi_free_recv_msg(recv_msg); |
| 1775 | return rv; |
| 1776 | } |
| 1777 | |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 1778 | static int check_addr(ipmi_smi_t intf, |
| 1779 | struct ipmi_addr *addr, |
| 1780 | unsigned char *saddr, |
| 1781 | unsigned char *lun) |
| 1782 | { |
| 1783 | if (addr->channel >= IPMI_MAX_CHANNELS) |
| 1784 | return -EINVAL; |
| 1785 | *lun = intf->channels[addr->channel].lun; |
| 1786 | *saddr = intf->channels[addr->channel].address; |
| 1787 | return 0; |
| 1788 | } |
| 1789 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1790 | int ipmi_request_settime(ipmi_user_t user, |
| 1791 | struct ipmi_addr *addr, |
| 1792 | long msgid, |
| 1793 | struct kernel_ipmi_msg *msg, |
| 1794 | void *user_msg_data, |
| 1795 | int priority, |
| 1796 | int retries, |
| 1797 | unsigned int retry_time_ms) |
| 1798 | { |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 1799 | unsigned char saddr, lun; |
| 1800 | int rv; |
| 1801 | |
Corey Minyard | 8a3628d | 2006-03-31 02:30:40 -0800 | [diff] [blame] | 1802 | if (!user) |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 1803 | return -EINVAL; |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 1804 | rv = check_addr(user->intf, addr, &saddr, &lun); |
| 1805 | if (rv) |
| 1806 | return rv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1807 | return i_ipmi_request(user, |
| 1808 | user->intf, |
| 1809 | addr, |
| 1810 | msgid, |
| 1811 | msg, |
| 1812 | user_msg_data, |
| 1813 | NULL, NULL, |
| 1814 | priority, |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 1815 | saddr, |
| 1816 | lun, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1817 | retries, |
| 1818 | retry_time_ms); |
| 1819 | } |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 1820 | EXPORT_SYMBOL(ipmi_request_settime); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1821 | |
| 1822 | int ipmi_request_supply_msgs(ipmi_user_t user, |
| 1823 | struct ipmi_addr *addr, |
| 1824 | long msgid, |
| 1825 | struct kernel_ipmi_msg *msg, |
| 1826 | void *user_msg_data, |
| 1827 | void *supplied_smi, |
| 1828 | struct ipmi_recv_msg *supplied_recv, |
| 1829 | int priority) |
| 1830 | { |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 1831 | unsigned char saddr, lun; |
| 1832 | int rv; |
| 1833 | |
Corey Minyard | 8a3628d | 2006-03-31 02:30:40 -0800 | [diff] [blame] | 1834 | if (!user) |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 1835 | return -EINVAL; |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 1836 | rv = check_addr(user->intf, addr, &saddr, &lun); |
| 1837 | if (rv) |
| 1838 | return rv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1839 | return i_ipmi_request(user, |
| 1840 | user->intf, |
| 1841 | addr, |
| 1842 | msgid, |
| 1843 | msg, |
| 1844 | user_msg_data, |
| 1845 | supplied_smi, |
| 1846 | supplied_recv, |
| 1847 | priority, |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 1848 | saddr, |
| 1849 | lun, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1850 | -1, 0); |
| 1851 | } |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 1852 | EXPORT_SYMBOL(ipmi_request_supply_msgs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1853 | |
Randy Dunlap | 1aa16ee | 2006-12-06 20:41:20 -0800 | [diff] [blame] | 1854 | #ifdef CONFIG_PROC_FS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1855 | static int ipmb_file_read_proc(char *page, char **start, off_t off, |
| 1856 | int count, int *eof, void *data) |
| 1857 | { |
| 1858 | char *out = (char *) page; |
| 1859 | ipmi_smi_t intf = data; |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 1860 | int i; |
Corey Minyard | 8a3628d | 2006-03-31 02:30:40 -0800 | [diff] [blame] | 1861 | int rv = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1862 | |
Corey Minyard | e8b3361 | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 1863 | for (i = 0; i < IPMI_MAX_CHANNELS; i++) |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 1864 | rv += sprintf(out+rv, "%x ", intf->channels[i].address); |
| 1865 | out[rv-1] = '\n'; /* Replace the final space with a newline */ |
| 1866 | out[rv] = '\0'; |
| 1867 | rv++; |
| 1868 | return rv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1869 | } |
| 1870 | |
| 1871 | static int version_file_read_proc(char *page, char **start, off_t off, |
| 1872 | int count, int *eof, void *data) |
| 1873 | { |
| 1874 | char *out = (char *) page; |
| 1875 | ipmi_smi_t intf = data; |
| 1876 | |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 1877 | return sprintf(out, "%u.%u\n", |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 1878 | ipmi_version_major(&intf->bmc->id), |
| 1879 | ipmi_version_minor(&intf->bmc->id)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1880 | } |
| 1881 | |
| 1882 | static int stat_file_read_proc(char *page, char **start, off_t off, |
| 1883 | int count, int *eof, void *data) |
| 1884 | { |
| 1885 | char *out = (char *) page; |
| 1886 | ipmi_smi_t intf = data; |
| 1887 | |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 1888 | out += sprintf(out, "sent_invalid_commands: %u\n", |
| 1889 | ipmi_get_stat(intf, sent_invalid_commands)); |
| 1890 | out += sprintf(out, "sent_local_commands: %u\n", |
| 1891 | ipmi_get_stat(intf, sent_local_commands)); |
| 1892 | out += sprintf(out, "handled_local_responses: %u\n", |
| 1893 | ipmi_get_stat(intf, handled_local_responses)); |
| 1894 | out += sprintf(out, "unhandled_local_responses: %u\n", |
| 1895 | ipmi_get_stat(intf, unhandled_local_responses)); |
| 1896 | out += sprintf(out, "sent_ipmb_commands: %u\n", |
| 1897 | ipmi_get_stat(intf, sent_ipmb_commands)); |
| 1898 | out += sprintf(out, "sent_ipmb_command_errs: %u\n", |
| 1899 | ipmi_get_stat(intf, sent_ipmb_command_errs)); |
| 1900 | out += sprintf(out, "retransmitted_ipmb_commands: %u\n", |
| 1901 | ipmi_get_stat(intf, retransmitted_ipmb_commands)); |
| 1902 | out += sprintf(out, "timed_out_ipmb_commands: %u\n", |
| 1903 | ipmi_get_stat(intf, timed_out_ipmb_commands)); |
| 1904 | out += sprintf(out, "timed_out_ipmb_broadcasts: %u\n", |
| 1905 | ipmi_get_stat(intf, timed_out_ipmb_broadcasts)); |
| 1906 | out += sprintf(out, "sent_ipmb_responses: %u\n", |
| 1907 | ipmi_get_stat(intf, sent_ipmb_responses)); |
| 1908 | out += sprintf(out, "handled_ipmb_responses: %u\n", |
| 1909 | ipmi_get_stat(intf, handled_ipmb_responses)); |
| 1910 | out += sprintf(out, "invalid_ipmb_responses: %u\n", |
| 1911 | ipmi_get_stat(intf, invalid_ipmb_responses)); |
| 1912 | out += sprintf(out, "unhandled_ipmb_responses: %u\n", |
| 1913 | ipmi_get_stat(intf, unhandled_ipmb_responses)); |
| 1914 | out += sprintf(out, "sent_lan_commands: %u\n", |
| 1915 | ipmi_get_stat(intf, sent_lan_commands)); |
| 1916 | out += sprintf(out, "sent_lan_command_errs: %u\n", |
| 1917 | ipmi_get_stat(intf, sent_lan_command_errs)); |
| 1918 | out += sprintf(out, "retransmitted_lan_commands: %u\n", |
| 1919 | ipmi_get_stat(intf, retransmitted_lan_commands)); |
| 1920 | out += sprintf(out, "timed_out_lan_commands: %u\n", |
| 1921 | ipmi_get_stat(intf, timed_out_lan_commands)); |
| 1922 | out += sprintf(out, "sent_lan_responses: %u\n", |
| 1923 | ipmi_get_stat(intf, sent_lan_responses)); |
| 1924 | out += sprintf(out, "handled_lan_responses: %u\n", |
| 1925 | ipmi_get_stat(intf, handled_lan_responses)); |
| 1926 | out += sprintf(out, "invalid_lan_responses: %u\n", |
| 1927 | ipmi_get_stat(intf, invalid_lan_responses)); |
| 1928 | out += sprintf(out, "unhandled_lan_responses: %u\n", |
| 1929 | ipmi_get_stat(intf, unhandled_lan_responses)); |
| 1930 | out += sprintf(out, "handled_commands: %u\n", |
| 1931 | ipmi_get_stat(intf, handled_commands)); |
| 1932 | out += sprintf(out, "invalid_commands: %u\n", |
| 1933 | ipmi_get_stat(intf, invalid_commands)); |
| 1934 | out += sprintf(out, "unhandled_commands: %u\n", |
| 1935 | ipmi_get_stat(intf, unhandled_commands)); |
| 1936 | out += sprintf(out, "invalid_events: %u\n", |
| 1937 | ipmi_get_stat(intf, invalid_events)); |
| 1938 | out += sprintf(out, "events: %u\n", |
| 1939 | ipmi_get_stat(intf, events)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1940 | |
| 1941 | return (out - ((char *) page)); |
| 1942 | } |
Randy Dunlap | 1aa16ee | 2006-12-06 20:41:20 -0800 | [diff] [blame] | 1943 | #endif /* CONFIG_PROC_FS */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1944 | |
| 1945 | int ipmi_smi_add_proc_entry(ipmi_smi_t smi, char *name, |
Alexey Dobriyan | fa68be0 | 2008-04-29 01:01:13 -0700 | [diff] [blame] | 1946 | read_proc_t *read_proc, |
Alexey Dobriyan | 99b7623 | 2009-03-25 22:48:06 +0300 | [diff] [blame^] | 1947 | void *data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1948 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1949 | int rv = 0; |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 1950 | #ifdef CONFIG_PROC_FS |
| 1951 | struct proc_dir_entry *file; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1952 | struct ipmi_proc_entry *entry; |
| 1953 | |
| 1954 | /* Create a list element. */ |
| 1955 | entry = kmalloc(sizeof(*entry), GFP_KERNEL); |
| 1956 | if (!entry) |
| 1957 | return -ENOMEM; |
| 1958 | entry->name = kmalloc(strlen(name)+1, GFP_KERNEL); |
| 1959 | if (!entry->name) { |
| 1960 | kfree(entry); |
| 1961 | return -ENOMEM; |
| 1962 | } |
| 1963 | strcpy(entry->name, name); |
| 1964 | |
| 1965 | file = create_proc_entry(name, 0, smi->proc_dir); |
| 1966 | if (!file) { |
| 1967 | kfree(entry->name); |
| 1968 | kfree(entry); |
| 1969 | rv = -ENOMEM; |
| 1970 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1971 | file->data = data; |
| 1972 | file->read_proc = read_proc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1973 | |
Corey Minyard | ac01915 | 2007-10-18 03:07:11 -0700 | [diff] [blame] | 1974 | mutex_lock(&smi->proc_entry_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1975 | /* Stick it on the list. */ |
| 1976 | entry->next = smi->proc_entries; |
| 1977 | smi->proc_entries = entry; |
Corey Minyard | ac01915 | 2007-10-18 03:07:11 -0700 | [diff] [blame] | 1978 | mutex_unlock(&smi->proc_entry_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1979 | } |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 1980 | #endif /* CONFIG_PROC_FS */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1981 | |
| 1982 | return rv; |
| 1983 | } |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 1984 | EXPORT_SYMBOL(ipmi_smi_add_proc_entry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1985 | |
| 1986 | static int add_proc_entries(ipmi_smi_t smi, int num) |
| 1987 | { |
| 1988 | int rv = 0; |
| 1989 | |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 1990 | #ifdef CONFIG_PROC_FS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1991 | sprintf(smi->proc_dir_name, "%d", num); |
| 1992 | smi->proc_dir = proc_mkdir(smi->proc_dir_name, proc_ipmi_root); |
| 1993 | if (!smi->proc_dir) |
| 1994 | rv = -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1995 | |
| 1996 | if (rv == 0) |
| 1997 | rv = ipmi_smi_add_proc_entry(smi, "stats", |
Alexey Dobriyan | fa68be0 | 2008-04-29 01:01:13 -0700 | [diff] [blame] | 1998 | stat_file_read_proc, |
Alexey Dobriyan | 99b7623 | 2009-03-25 22:48:06 +0300 | [diff] [blame^] | 1999 | smi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2000 | |
| 2001 | if (rv == 0) |
| 2002 | rv = ipmi_smi_add_proc_entry(smi, "ipmb", |
Alexey Dobriyan | fa68be0 | 2008-04-29 01:01:13 -0700 | [diff] [blame] | 2003 | ipmb_file_read_proc, |
Alexey Dobriyan | 99b7623 | 2009-03-25 22:48:06 +0300 | [diff] [blame^] | 2004 | smi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2005 | |
| 2006 | if (rv == 0) |
| 2007 | rv = ipmi_smi_add_proc_entry(smi, "version", |
Alexey Dobriyan | fa68be0 | 2008-04-29 01:01:13 -0700 | [diff] [blame] | 2008 | version_file_read_proc, |
Alexey Dobriyan | 99b7623 | 2009-03-25 22:48:06 +0300 | [diff] [blame^] | 2009 | smi); |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 2010 | #endif /* CONFIG_PROC_FS */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2011 | |
| 2012 | return rv; |
| 2013 | } |
| 2014 | |
| 2015 | static void remove_proc_entries(ipmi_smi_t smi) |
| 2016 | { |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 2017 | #ifdef CONFIG_PROC_FS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2018 | struct ipmi_proc_entry *entry; |
| 2019 | |
Corey Minyard | ac01915 | 2007-10-18 03:07:11 -0700 | [diff] [blame] | 2020 | mutex_lock(&smi->proc_entry_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2021 | while (smi->proc_entries) { |
| 2022 | entry = smi->proc_entries; |
| 2023 | smi->proc_entries = entry->next; |
| 2024 | |
| 2025 | remove_proc_entry(entry->name, smi->proc_dir); |
| 2026 | kfree(entry->name); |
| 2027 | kfree(entry); |
| 2028 | } |
Corey Minyard | ac01915 | 2007-10-18 03:07:11 -0700 | [diff] [blame] | 2029 | mutex_unlock(&smi->proc_entry_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2030 | remove_proc_entry(smi->proc_dir_name, proc_ipmi_root); |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 2031 | #endif /* CONFIG_PROC_FS */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2032 | } |
| 2033 | |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2034 | static int __find_bmc_guid(struct device *dev, void *data) |
| 2035 | { |
| 2036 | unsigned char *id = data; |
| 2037 | struct bmc_device *bmc = dev_get_drvdata(dev); |
| 2038 | return memcmp(bmc->guid, id, 16) == 0; |
| 2039 | } |
| 2040 | |
| 2041 | static struct bmc_device *ipmi_find_bmc_guid(struct device_driver *drv, |
| 2042 | unsigned char *guid) |
| 2043 | { |
| 2044 | struct device *dev; |
| 2045 | |
| 2046 | dev = driver_find_device(drv, NULL, guid, __find_bmc_guid); |
| 2047 | if (dev) |
| 2048 | return dev_get_drvdata(dev); |
| 2049 | else |
| 2050 | return NULL; |
| 2051 | } |
| 2052 | |
| 2053 | struct prod_dev_id { |
| 2054 | unsigned int product_id; |
| 2055 | unsigned char device_id; |
| 2056 | }; |
| 2057 | |
| 2058 | static int __find_bmc_prod_dev_id(struct device *dev, void *data) |
| 2059 | { |
| 2060 | struct prod_dev_id *id = data; |
| 2061 | struct bmc_device *bmc = dev_get_drvdata(dev); |
| 2062 | |
| 2063 | return (bmc->id.product_id == id->product_id |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2064 | && bmc->id.device_id == id->device_id); |
| 2065 | } |
| 2066 | |
| 2067 | static struct bmc_device *ipmi_find_bmc_prod_dev_id( |
| 2068 | struct device_driver *drv, |
Corey Minyard | f0b55da | 2006-12-06 20:40:54 -0800 | [diff] [blame] | 2069 | unsigned int product_id, unsigned char device_id) |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2070 | { |
| 2071 | struct prod_dev_id id = { |
| 2072 | .product_id = product_id, |
| 2073 | .device_id = device_id, |
| 2074 | }; |
| 2075 | struct device *dev; |
| 2076 | |
| 2077 | dev = driver_find_device(drv, NULL, &id, __find_bmc_prod_dev_id); |
| 2078 | if (dev) |
| 2079 | return dev_get_drvdata(dev); |
| 2080 | else |
| 2081 | return NULL; |
| 2082 | } |
| 2083 | |
| 2084 | static ssize_t device_id_show(struct device *dev, |
| 2085 | struct device_attribute *attr, |
| 2086 | char *buf) |
| 2087 | { |
| 2088 | struct bmc_device *bmc = dev_get_drvdata(dev); |
| 2089 | |
| 2090 | return snprintf(buf, 10, "%u\n", bmc->id.device_id); |
| 2091 | } |
| 2092 | |
| 2093 | static ssize_t provides_dev_sdrs_show(struct device *dev, |
| 2094 | struct device_attribute *attr, |
| 2095 | char *buf) |
| 2096 | { |
| 2097 | struct bmc_device *bmc = dev_get_drvdata(dev); |
| 2098 | |
| 2099 | return snprintf(buf, 10, "%u\n", |
Corey Minyard | 7947d2c | 2006-11-10 12:27:50 -0800 | [diff] [blame] | 2100 | (bmc->id.device_revision & 0x80) >> 7); |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2101 | } |
| 2102 | |
| 2103 | static ssize_t revision_show(struct device *dev, struct device_attribute *attr, |
| 2104 | char *buf) |
| 2105 | { |
| 2106 | struct bmc_device *bmc = dev_get_drvdata(dev); |
| 2107 | |
| 2108 | return snprintf(buf, 20, "%u\n", |
Corey Minyard | 7947d2c | 2006-11-10 12:27:50 -0800 | [diff] [blame] | 2109 | bmc->id.device_revision & 0x0F); |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2110 | } |
| 2111 | |
| 2112 | static ssize_t firmware_rev_show(struct device *dev, |
| 2113 | struct device_attribute *attr, |
| 2114 | char *buf) |
| 2115 | { |
| 2116 | struct bmc_device *bmc = dev_get_drvdata(dev); |
| 2117 | |
| 2118 | return snprintf(buf, 20, "%u.%x\n", bmc->id.firmware_revision_1, |
| 2119 | bmc->id.firmware_revision_2); |
| 2120 | } |
| 2121 | |
| 2122 | static ssize_t ipmi_version_show(struct device *dev, |
| 2123 | struct device_attribute *attr, |
| 2124 | char *buf) |
| 2125 | { |
| 2126 | struct bmc_device *bmc = dev_get_drvdata(dev); |
| 2127 | |
| 2128 | return snprintf(buf, 20, "%u.%u\n", |
| 2129 | ipmi_version_major(&bmc->id), |
| 2130 | ipmi_version_minor(&bmc->id)); |
| 2131 | } |
| 2132 | |
| 2133 | static ssize_t add_dev_support_show(struct device *dev, |
| 2134 | struct device_attribute *attr, |
| 2135 | char *buf) |
| 2136 | { |
| 2137 | struct bmc_device *bmc = dev_get_drvdata(dev); |
| 2138 | |
| 2139 | return snprintf(buf, 10, "0x%02x\n", |
| 2140 | bmc->id.additional_device_support); |
| 2141 | } |
| 2142 | |
| 2143 | static ssize_t manufacturer_id_show(struct device *dev, |
| 2144 | struct device_attribute *attr, |
| 2145 | char *buf) |
| 2146 | { |
| 2147 | struct bmc_device *bmc = dev_get_drvdata(dev); |
| 2148 | |
| 2149 | return snprintf(buf, 20, "0x%6.6x\n", bmc->id.manufacturer_id); |
| 2150 | } |
| 2151 | |
| 2152 | static ssize_t product_id_show(struct device *dev, |
| 2153 | struct device_attribute *attr, |
| 2154 | char *buf) |
| 2155 | { |
| 2156 | struct bmc_device *bmc = dev_get_drvdata(dev); |
| 2157 | |
| 2158 | return snprintf(buf, 10, "0x%4.4x\n", bmc->id.product_id); |
| 2159 | } |
| 2160 | |
| 2161 | static ssize_t aux_firmware_rev_show(struct device *dev, |
| 2162 | struct device_attribute *attr, |
| 2163 | char *buf) |
| 2164 | { |
| 2165 | struct bmc_device *bmc = dev_get_drvdata(dev); |
| 2166 | |
| 2167 | return snprintf(buf, 21, "0x%02x 0x%02x 0x%02x 0x%02x\n", |
| 2168 | bmc->id.aux_firmware_revision[3], |
| 2169 | bmc->id.aux_firmware_revision[2], |
| 2170 | bmc->id.aux_firmware_revision[1], |
| 2171 | bmc->id.aux_firmware_revision[0]); |
| 2172 | } |
| 2173 | |
| 2174 | static ssize_t guid_show(struct device *dev, struct device_attribute *attr, |
| 2175 | char *buf) |
| 2176 | { |
| 2177 | struct bmc_device *bmc = dev_get_drvdata(dev); |
| 2178 | |
| 2179 | return snprintf(buf, 100, "%Lx%Lx\n", |
| 2180 | (long long) bmc->guid[0], |
| 2181 | (long long) bmc->guid[8]); |
| 2182 | } |
| 2183 | |
Jeff Garzik | 5e59393 | 2006-10-11 01:22:21 -0700 | [diff] [blame] | 2184 | static void remove_files(struct bmc_device *bmc) |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2185 | { |
Corey Minyard | f0b55da | 2006-12-06 20:40:54 -0800 | [diff] [blame] | 2186 | if (!bmc->dev) |
| 2187 | return; |
| 2188 | |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2189 | device_remove_file(&bmc->dev->dev, |
| 2190 | &bmc->device_id_attr); |
| 2191 | device_remove_file(&bmc->dev->dev, |
| 2192 | &bmc->provides_dev_sdrs_attr); |
| 2193 | device_remove_file(&bmc->dev->dev, |
| 2194 | &bmc->revision_attr); |
| 2195 | device_remove_file(&bmc->dev->dev, |
| 2196 | &bmc->firmware_rev_attr); |
| 2197 | device_remove_file(&bmc->dev->dev, |
| 2198 | &bmc->version_attr); |
| 2199 | device_remove_file(&bmc->dev->dev, |
| 2200 | &bmc->add_dev_support_attr); |
| 2201 | device_remove_file(&bmc->dev->dev, |
| 2202 | &bmc->manufacturer_id_attr); |
| 2203 | device_remove_file(&bmc->dev->dev, |
| 2204 | &bmc->product_id_attr); |
Jeff Garzik | 5e59393 | 2006-10-11 01:22:21 -0700 | [diff] [blame] | 2205 | |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2206 | if (bmc->id.aux_firmware_revision_set) |
| 2207 | device_remove_file(&bmc->dev->dev, |
| 2208 | &bmc->aux_firmware_rev_attr); |
| 2209 | if (bmc->guid_set) |
| 2210 | device_remove_file(&bmc->dev->dev, |
| 2211 | &bmc->guid_attr); |
Jeff Garzik | 5e59393 | 2006-10-11 01:22:21 -0700 | [diff] [blame] | 2212 | } |
| 2213 | |
| 2214 | static void |
| 2215 | cleanup_bmc_device(struct kref *ref) |
| 2216 | { |
| 2217 | struct bmc_device *bmc; |
| 2218 | |
| 2219 | bmc = container_of(ref, struct bmc_device, refcount); |
| 2220 | |
| 2221 | remove_files(bmc); |
Corey Minyard | 1d5636c | 2006-12-10 02:19:08 -0800 | [diff] [blame] | 2222 | platform_device_unregister(bmc->dev); |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2223 | kfree(bmc); |
| 2224 | } |
| 2225 | |
| 2226 | static void ipmi_bmc_unregister(ipmi_smi_t intf) |
| 2227 | { |
| 2228 | struct bmc_device *bmc = intf->bmc; |
| 2229 | |
Corey Minyard | 759643b | 2006-12-06 20:40:59 -0800 | [diff] [blame] | 2230 | if (intf->sysfs_name) { |
| 2231 | sysfs_remove_link(&intf->si_dev->kobj, intf->sysfs_name); |
| 2232 | kfree(intf->sysfs_name); |
| 2233 | intf->sysfs_name = NULL; |
| 2234 | } |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2235 | if (intf->my_dev_name) { |
| 2236 | sysfs_remove_link(&bmc->dev->dev.kobj, intf->my_dev_name); |
| 2237 | kfree(intf->my_dev_name); |
| 2238 | intf->my_dev_name = NULL; |
| 2239 | } |
| 2240 | |
| 2241 | mutex_lock(&ipmidriver_mutex); |
| 2242 | kref_put(&bmc->refcount, cleanup_bmc_device); |
Corey Minyard | f0b55da | 2006-12-06 20:40:54 -0800 | [diff] [blame] | 2243 | intf->bmc = NULL; |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2244 | mutex_unlock(&ipmidriver_mutex); |
| 2245 | } |
| 2246 | |
Jeff Garzik | 5e59393 | 2006-10-11 01:22:21 -0700 | [diff] [blame] | 2247 | static int create_files(struct bmc_device *bmc) |
| 2248 | { |
| 2249 | int err; |
| 2250 | |
Corey Minyard | f0b55da | 2006-12-06 20:40:54 -0800 | [diff] [blame] | 2251 | bmc->device_id_attr.attr.name = "device_id"; |
Corey Minyard | f0b55da | 2006-12-06 20:40:54 -0800 | [diff] [blame] | 2252 | bmc->device_id_attr.attr.mode = S_IRUGO; |
| 2253 | bmc->device_id_attr.show = device_id_show; |
| 2254 | |
| 2255 | bmc->provides_dev_sdrs_attr.attr.name = "provides_device_sdrs"; |
Corey Minyard | f0b55da | 2006-12-06 20:40:54 -0800 | [diff] [blame] | 2256 | bmc->provides_dev_sdrs_attr.attr.mode = S_IRUGO; |
| 2257 | bmc->provides_dev_sdrs_attr.show = provides_dev_sdrs_show; |
| 2258 | |
| 2259 | bmc->revision_attr.attr.name = "revision"; |
Corey Minyard | f0b55da | 2006-12-06 20:40:54 -0800 | [diff] [blame] | 2260 | bmc->revision_attr.attr.mode = S_IRUGO; |
| 2261 | bmc->revision_attr.show = revision_show; |
| 2262 | |
| 2263 | bmc->firmware_rev_attr.attr.name = "firmware_revision"; |
Corey Minyard | f0b55da | 2006-12-06 20:40:54 -0800 | [diff] [blame] | 2264 | bmc->firmware_rev_attr.attr.mode = S_IRUGO; |
| 2265 | bmc->firmware_rev_attr.show = firmware_rev_show; |
| 2266 | |
| 2267 | bmc->version_attr.attr.name = "ipmi_version"; |
Corey Minyard | f0b55da | 2006-12-06 20:40:54 -0800 | [diff] [blame] | 2268 | bmc->version_attr.attr.mode = S_IRUGO; |
| 2269 | bmc->version_attr.show = ipmi_version_show; |
| 2270 | |
| 2271 | bmc->add_dev_support_attr.attr.name = "additional_device_support"; |
Corey Minyard | f0b55da | 2006-12-06 20:40:54 -0800 | [diff] [blame] | 2272 | bmc->add_dev_support_attr.attr.mode = S_IRUGO; |
| 2273 | bmc->add_dev_support_attr.show = add_dev_support_show; |
| 2274 | |
| 2275 | bmc->manufacturer_id_attr.attr.name = "manufacturer_id"; |
Corey Minyard | f0b55da | 2006-12-06 20:40:54 -0800 | [diff] [blame] | 2276 | bmc->manufacturer_id_attr.attr.mode = S_IRUGO; |
| 2277 | bmc->manufacturer_id_attr.show = manufacturer_id_show; |
| 2278 | |
| 2279 | bmc->product_id_attr.attr.name = "product_id"; |
Corey Minyard | f0b55da | 2006-12-06 20:40:54 -0800 | [diff] [blame] | 2280 | bmc->product_id_attr.attr.mode = S_IRUGO; |
| 2281 | bmc->product_id_attr.show = product_id_show; |
| 2282 | |
| 2283 | bmc->guid_attr.attr.name = "guid"; |
Corey Minyard | f0b55da | 2006-12-06 20:40:54 -0800 | [diff] [blame] | 2284 | bmc->guid_attr.attr.mode = S_IRUGO; |
| 2285 | bmc->guid_attr.show = guid_show; |
| 2286 | |
| 2287 | bmc->aux_firmware_rev_attr.attr.name = "aux_firmware_revision"; |
Corey Minyard | f0b55da | 2006-12-06 20:40:54 -0800 | [diff] [blame] | 2288 | bmc->aux_firmware_rev_attr.attr.mode = S_IRUGO; |
| 2289 | bmc->aux_firmware_rev_attr.show = aux_firmware_rev_show; |
| 2290 | |
Jeff Garzik | 5e59393 | 2006-10-11 01:22:21 -0700 | [diff] [blame] | 2291 | err = device_create_file(&bmc->dev->dev, |
| 2292 | &bmc->device_id_attr); |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 2293 | if (err) |
| 2294 | goto out; |
Jeff Garzik | 5e59393 | 2006-10-11 01:22:21 -0700 | [diff] [blame] | 2295 | err = device_create_file(&bmc->dev->dev, |
| 2296 | &bmc->provides_dev_sdrs_attr); |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 2297 | if (err) |
| 2298 | goto out_devid; |
Jeff Garzik | 5e59393 | 2006-10-11 01:22:21 -0700 | [diff] [blame] | 2299 | err = device_create_file(&bmc->dev->dev, |
| 2300 | &bmc->revision_attr); |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 2301 | if (err) |
| 2302 | goto out_sdrs; |
Jeff Garzik | 5e59393 | 2006-10-11 01:22:21 -0700 | [diff] [blame] | 2303 | err = device_create_file(&bmc->dev->dev, |
| 2304 | &bmc->firmware_rev_attr); |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 2305 | if (err) |
| 2306 | goto out_rev; |
Jeff Garzik | 5e59393 | 2006-10-11 01:22:21 -0700 | [diff] [blame] | 2307 | err = device_create_file(&bmc->dev->dev, |
| 2308 | &bmc->version_attr); |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 2309 | if (err) |
| 2310 | goto out_firm; |
Jeff Garzik | 5e59393 | 2006-10-11 01:22:21 -0700 | [diff] [blame] | 2311 | err = device_create_file(&bmc->dev->dev, |
| 2312 | &bmc->add_dev_support_attr); |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 2313 | if (err) |
| 2314 | goto out_version; |
Jeff Garzik | 5e59393 | 2006-10-11 01:22:21 -0700 | [diff] [blame] | 2315 | err = device_create_file(&bmc->dev->dev, |
| 2316 | &bmc->manufacturer_id_attr); |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 2317 | if (err) |
| 2318 | goto out_add_dev; |
Jeff Garzik | 5e59393 | 2006-10-11 01:22:21 -0700 | [diff] [blame] | 2319 | err = device_create_file(&bmc->dev->dev, |
| 2320 | &bmc->product_id_attr); |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 2321 | if (err) |
| 2322 | goto out_manu; |
Jeff Garzik | 5e59393 | 2006-10-11 01:22:21 -0700 | [diff] [blame] | 2323 | if (bmc->id.aux_firmware_revision_set) { |
| 2324 | err = device_create_file(&bmc->dev->dev, |
| 2325 | &bmc->aux_firmware_rev_attr); |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 2326 | if (err) |
| 2327 | goto out_prod_id; |
Jeff Garzik | 5e59393 | 2006-10-11 01:22:21 -0700 | [diff] [blame] | 2328 | } |
| 2329 | if (bmc->guid_set) { |
| 2330 | err = device_create_file(&bmc->dev->dev, |
| 2331 | &bmc->guid_attr); |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 2332 | if (err) |
| 2333 | goto out_aux_firm; |
Jeff Garzik | 5e59393 | 2006-10-11 01:22:21 -0700 | [diff] [blame] | 2334 | } |
| 2335 | |
| 2336 | return 0; |
| 2337 | |
| 2338 | out_aux_firm: |
| 2339 | if (bmc->id.aux_firmware_revision_set) |
| 2340 | device_remove_file(&bmc->dev->dev, |
| 2341 | &bmc->aux_firmware_rev_attr); |
| 2342 | out_prod_id: |
| 2343 | device_remove_file(&bmc->dev->dev, |
| 2344 | &bmc->product_id_attr); |
| 2345 | out_manu: |
| 2346 | device_remove_file(&bmc->dev->dev, |
| 2347 | &bmc->manufacturer_id_attr); |
| 2348 | out_add_dev: |
| 2349 | device_remove_file(&bmc->dev->dev, |
| 2350 | &bmc->add_dev_support_attr); |
| 2351 | out_version: |
| 2352 | device_remove_file(&bmc->dev->dev, |
| 2353 | &bmc->version_attr); |
| 2354 | out_firm: |
| 2355 | device_remove_file(&bmc->dev->dev, |
| 2356 | &bmc->firmware_rev_attr); |
| 2357 | out_rev: |
| 2358 | device_remove_file(&bmc->dev->dev, |
| 2359 | &bmc->revision_attr); |
| 2360 | out_sdrs: |
| 2361 | device_remove_file(&bmc->dev->dev, |
| 2362 | &bmc->provides_dev_sdrs_attr); |
| 2363 | out_devid: |
| 2364 | device_remove_file(&bmc->dev->dev, |
| 2365 | &bmc->device_id_attr); |
| 2366 | out: |
| 2367 | return err; |
| 2368 | } |
| 2369 | |
Corey Minyard | 759643b | 2006-12-06 20:40:59 -0800 | [diff] [blame] | 2370 | static int ipmi_bmc_register(ipmi_smi_t intf, int ifnum, |
| 2371 | const char *sysfs_name) |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2372 | { |
| 2373 | int rv; |
| 2374 | struct bmc_device *bmc = intf->bmc; |
| 2375 | struct bmc_device *old_bmc; |
| 2376 | int size; |
| 2377 | char dummy[1]; |
| 2378 | |
| 2379 | mutex_lock(&ipmidriver_mutex); |
| 2380 | |
| 2381 | /* |
| 2382 | * Try to find if there is an bmc_device struct |
| 2383 | * representing the interfaced BMC already |
| 2384 | */ |
| 2385 | if (bmc->guid_set) |
Darrick J. Wong | fe2d5ff | 2008-11-12 13:25:00 -0800 | [diff] [blame] | 2386 | old_bmc = ipmi_find_bmc_guid(&ipmidriver.driver, bmc->guid); |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2387 | else |
Darrick J. Wong | fe2d5ff | 2008-11-12 13:25:00 -0800 | [diff] [blame] | 2388 | old_bmc = ipmi_find_bmc_prod_dev_id(&ipmidriver.driver, |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2389 | bmc->id.product_id, |
| 2390 | bmc->id.device_id); |
| 2391 | |
| 2392 | /* |
| 2393 | * If there is already an bmc_device, free the new one, |
| 2394 | * otherwise register the new BMC device |
| 2395 | */ |
| 2396 | if (old_bmc) { |
| 2397 | kfree(bmc); |
| 2398 | intf->bmc = old_bmc; |
| 2399 | bmc = old_bmc; |
| 2400 | |
| 2401 | kref_get(&bmc->refcount); |
| 2402 | mutex_unlock(&ipmidriver_mutex); |
| 2403 | |
| 2404 | printk(KERN_INFO |
| 2405 | "ipmi: interfacing existing BMC (man_id: 0x%6.6x," |
| 2406 | " prod_id: 0x%4.4x, dev_id: 0x%2.2x)\n", |
| 2407 | bmc->id.manufacturer_id, |
| 2408 | bmc->id.product_id, |
| 2409 | bmc->id.device_id); |
| 2410 | } else { |
Corey Minyard | f0b55da | 2006-12-06 20:40:54 -0800 | [diff] [blame] | 2411 | char name[14]; |
| 2412 | unsigned char orig_dev_id = bmc->id.device_id; |
| 2413 | int warn_printed = 0; |
| 2414 | |
| 2415 | snprintf(name, sizeof(name), |
| 2416 | "ipmi_bmc.%4.4x", bmc->id.product_id); |
| 2417 | |
Darrick J. Wong | fe2d5ff | 2008-11-12 13:25:00 -0800 | [diff] [blame] | 2418 | while (ipmi_find_bmc_prod_dev_id(&ipmidriver.driver, |
Corey Minyard | f0b55da | 2006-12-06 20:40:54 -0800 | [diff] [blame] | 2419 | bmc->id.product_id, |
Corey Minyard | 1d5636c | 2006-12-10 02:19:08 -0800 | [diff] [blame] | 2420 | bmc->id.device_id)) { |
Corey Minyard | f0b55da | 2006-12-06 20:40:54 -0800 | [diff] [blame] | 2421 | if (!warn_printed) { |
| 2422 | printk(KERN_WARNING PFX |
| 2423 | "This machine has two different BMCs" |
| 2424 | " with the same product id and device" |
| 2425 | " id. This is an error in the" |
| 2426 | " firmware, but incrementing the" |
| 2427 | " device id to work around the problem." |
| 2428 | " Prod ID = 0x%x, Dev ID = 0x%x\n", |
| 2429 | bmc->id.product_id, bmc->id.device_id); |
| 2430 | warn_printed = 1; |
| 2431 | } |
| 2432 | bmc->id.device_id++; /* Wraps at 255 */ |
| 2433 | if (bmc->id.device_id == orig_dev_id) { |
| 2434 | printk(KERN_ERR PFX |
| 2435 | "Out of device ids!\n"); |
| 2436 | break; |
| 2437 | } |
| 2438 | } |
| 2439 | |
| 2440 | bmc->dev = platform_device_alloc(name, bmc->id.device_id); |
Corey Minyard | 8a3628d | 2006-03-31 02:30:40 -0800 | [diff] [blame] | 2441 | if (!bmc->dev) { |
Corey Minyard | f0b55da | 2006-12-06 20:40:54 -0800 | [diff] [blame] | 2442 | mutex_unlock(&ipmidriver_mutex); |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2443 | printk(KERN_ERR |
| 2444 | "ipmi_msghandler:" |
| 2445 | " Unable to allocate platform device\n"); |
| 2446 | return -ENOMEM; |
| 2447 | } |
Darrick J. Wong | fe2d5ff | 2008-11-12 13:25:00 -0800 | [diff] [blame] | 2448 | bmc->dev->dev.driver = &ipmidriver.driver; |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2449 | dev_set_drvdata(&bmc->dev->dev, bmc); |
| 2450 | kref_init(&bmc->refcount); |
| 2451 | |
Zhang, Yanmin | b48f545 | 2006-11-16 01:19:08 -0800 | [diff] [blame] | 2452 | rv = platform_device_add(bmc->dev); |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2453 | mutex_unlock(&ipmidriver_mutex); |
| 2454 | if (rv) { |
Corey Minyard | f0b55da | 2006-12-06 20:40:54 -0800 | [diff] [blame] | 2455 | platform_device_put(bmc->dev); |
| 2456 | bmc->dev = NULL; |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2457 | printk(KERN_ERR |
| 2458 | "ipmi_msghandler:" |
| 2459 | " Unable to register bmc device: %d\n", |
| 2460 | rv); |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 2461 | /* |
| 2462 | * Don't go to out_err, you can only do that if |
| 2463 | * the device is registered already. |
| 2464 | */ |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2465 | return rv; |
| 2466 | } |
| 2467 | |
Jeff Garzik | 5e59393 | 2006-10-11 01:22:21 -0700 | [diff] [blame] | 2468 | rv = create_files(bmc); |
| 2469 | if (rv) { |
| 2470 | mutex_lock(&ipmidriver_mutex); |
| 2471 | platform_device_unregister(bmc->dev); |
| 2472 | mutex_unlock(&ipmidriver_mutex); |
| 2473 | |
| 2474 | return rv; |
| 2475 | } |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2476 | |
| 2477 | printk(KERN_INFO |
| 2478 | "ipmi: Found new BMC (man_id: 0x%6.6x, " |
| 2479 | " prod_id: 0x%4.4x, dev_id: 0x%2.2x)\n", |
| 2480 | bmc->id.manufacturer_id, |
| 2481 | bmc->id.product_id, |
| 2482 | bmc->id.device_id); |
| 2483 | } |
| 2484 | |
| 2485 | /* |
| 2486 | * create symlink from system interface device to bmc device |
| 2487 | * and back. |
| 2488 | */ |
Corey Minyard | 759643b | 2006-12-06 20:40:59 -0800 | [diff] [blame] | 2489 | intf->sysfs_name = kstrdup(sysfs_name, GFP_KERNEL); |
| 2490 | if (!intf->sysfs_name) { |
| 2491 | rv = -ENOMEM; |
| 2492 | printk(KERN_ERR |
| 2493 | "ipmi_msghandler: allocate link to BMC: %d\n", |
| 2494 | rv); |
| 2495 | goto out_err; |
| 2496 | } |
| 2497 | |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2498 | rv = sysfs_create_link(&intf->si_dev->kobj, |
Corey Minyard | 759643b | 2006-12-06 20:40:59 -0800 | [diff] [blame] | 2499 | &bmc->dev->dev.kobj, intf->sysfs_name); |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2500 | if (rv) { |
Corey Minyard | 759643b | 2006-12-06 20:40:59 -0800 | [diff] [blame] | 2501 | kfree(intf->sysfs_name); |
| 2502 | intf->sysfs_name = NULL; |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2503 | printk(KERN_ERR |
| 2504 | "ipmi_msghandler: Unable to create bmc symlink: %d\n", |
| 2505 | rv); |
| 2506 | goto out_err; |
| 2507 | } |
| 2508 | |
Corey Minyard | 759643b | 2006-12-06 20:40:59 -0800 | [diff] [blame] | 2509 | size = snprintf(dummy, 0, "ipmi%d", ifnum); |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2510 | intf->my_dev_name = kmalloc(size+1, GFP_KERNEL); |
| 2511 | if (!intf->my_dev_name) { |
Corey Minyard | 759643b | 2006-12-06 20:40:59 -0800 | [diff] [blame] | 2512 | kfree(intf->sysfs_name); |
| 2513 | intf->sysfs_name = NULL; |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2514 | rv = -ENOMEM; |
| 2515 | printk(KERN_ERR |
| 2516 | "ipmi_msghandler: allocate link from BMC: %d\n", |
| 2517 | rv); |
| 2518 | goto out_err; |
| 2519 | } |
Corey Minyard | 759643b | 2006-12-06 20:40:59 -0800 | [diff] [blame] | 2520 | snprintf(intf->my_dev_name, size+1, "ipmi%d", ifnum); |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2521 | |
| 2522 | rv = sysfs_create_link(&bmc->dev->dev.kobj, &intf->si_dev->kobj, |
| 2523 | intf->my_dev_name); |
| 2524 | if (rv) { |
Corey Minyard | 759643b | 2006-12-06 20:40:59 -0800 | [diff] [blame] | 2525 | kfree(intf->sysfs_name); |
| 2526 | intf->sysfs_name = NULL; |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2527 | kfree(intf->my_dev_name); |
| 2528 | intf->my_dev_name = NULL; |
| 2529 | printk(KERN_ERR |
| 2530 | "ipmi_msghandler:" |
| 2531 | " Unable to create symlink to bmc: %d\n", |
| 2532 | rv); |
| 2533 | goto out_err; |
| 2534 | } |
| 2535 | |
| 2536 | return 0; |
| 2537 | |
| 2538 | out_err: |
| 2539 | ipmi_bmc_unregister(intf); |
| 2540 | return rv; |
| 2541 | } |
| 2542 | |
| 2543 | static int |
| 2544 | send_guid_cmd(ipmi_smi_t intf, int chan) |
| 2545 | { |
| 2546 | struct kernel_ipmi_msg msg; |
| 2547 | struct ipmi_system_interface_addr si; |
| 2548 | |
| 2549 | si.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; |
| 2550 | si.channel = IPMI_BMC_CHANNEL; |
| 2551 | si.lun = 0; |
| 2552 | |
| 2553 | msg.netfn = IPMI_NETFN_APP_REQUEST; |
| 2554 | msg.cmd = IPMI_GET_DEVICE_GUID_CMD; |
| 2555 | msg.data = NULL; |
| 2556 | msg.data_len = 0; |
| 2557 | return i_ipmi_request(NULL, |
| 2558 | intf, |
| 2559 | (struct ipmi_addr *) &si, |
| 2560 | 0, |
| 2561 | &msg, |
| 2562 | intf, |
| 2563 | NULL, |
| 2564 | NULL, |
| 2565 | 0, |
| 2566 | intf->channels[0].address, |
| 2567 | intf->channels[0].lun, |
| 2568 | -1, 0); |
| 2569 | } |
| 2570 | |
| 2571 | static void |
| 2572 | guid_handler(ipmi_smi_t intf, struct ipmi_recv_msg *msg) |
| 2573 | { |
| 2574 | if ((msg->addr.addr_type != IPMI_SYSTEM_INTERFACE_ADDR_TYPE) |
| 2575 | || (msg->msg.netfn != IPMI_NETFN_APP_RESPONSE) |
| 2576 | || (msg->msg.cmd != IPMI_GET_DEVICE_GUID_CMD)) |
| 2577 | /* Not for me */ |
| 2578 | return; |
| 2579 | |
| 2580 | if (msg->msg.data[0] != 0) { |
| 2581 | /* Error from getting the GUID, the BMC doesn't have one. */ |
| 2582 | intf->bmc->guid_set = 0; |
| 2583 | goto out; |
| 2584 | } |
| 2585 | |
| 2586 | if (msg->msg.data_len < 17) { |
| 2587 | intf->bmc->guid_set = 0; |
| 2588 | printk(KERN_WARNING PFX |
| 2589 | "guid_handler: The GUID response from the BMC was too" |
| 2590 | " short, it was %d but should have been 17. Assuming" |
| 2591 | " GUID is not available.\n", |
| 2592 | msg->msg.data_len); |
| 2593 | goto out; |
| 2594 | } |
| 2595 | |
| 2596 | memcpy(intf->bmc->guid, msg->msg.data, 16); |
| 2597 | intf->bmc->guid_set = 1; |
| 2598 | out: |
| 2599 | wake_up(&intf->waitq); |
| 2600 | } |
| 2601 | |
| 2602 | static void |
| 2603 | get_guid(ipmi_smi_t intf) |
| 2604 | { |
| 2605 | int rv; |
| 2606 | |
| 2607 | intf->bmc->guid_set = 0x2; |
| 2608 | intf->null_user_handler = guid_handler; |
| 2609 | rv = send_guid_cmd(intf, 0); |
| 2610 | if (rv) |
| 2611 | /* Send failed, no GUID available. */ |
| 2612 | intf->bmc->guid_set = 0; |
| 2613 | wait_event(intf->waitq, intf->bmc->guid_set != 2); |
| 2614 | intf->null_user_handler = NULL; |
| 2615 | } |
| 2616 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2617 | static int |
| 2618 | send_channel_info_cmd(ipmi_smi_t intf, int chan) |
| 2619 | { |
| 2620 | struct kernel_ipmi_msg msg; |
| 2621 | unsigned char data[1]; |
| 2622 | struct ipmi_system_interface_addr si; |
| 2623 | |
| 2624 | si.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; |
| 2625 | si.channel = IPMI_BMC_CHANNEL; |
| 2626 | si.lun = 0; |
| 2627 | |
| 2628 | msg.netfn = IPMI_NETFN_APP_REQUEST; |
| 2629 | msg.cmd = IPMI_GET_CHANNEL_INFO_CMD; |
| 2630 | msg.data = data; |
| 2631 | msg.data_len = 1; |
| 2632 | data[0] = chan; |
| 2633 | return i_ipmi_request(NULL, |
| 2634 | intf, |
| 2635 | (struct ipmi_addr *) &si, |
| 2636 | 0, |
| 2637 | &msg, |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 2638 | intf, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2639 | NULL, |
| 2640 | NULL, |
| 2641 | 0, |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 2642 | intf->channels[0].address, |
| 2643 | intf->channels[0].lun, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2644 | -1, 0); |
| 2645 | } |
| 2646 | |
| 2647 | static void |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 2648 | channel_handler(ipmi_smi_t intf, struct ipmi_recv_msg *msg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2649 | { |
| 2650 | int rv = 0; |
| 2651 | int chan; |
| 2652 | |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 2653 | if ((msg->addr.addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) |
| 2654 | && (msg->msg.netfn == IPMI_NETFN_APP_RESPONSE) |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 2655 | && (msg->msg.cmd == IPMI_GET_CHANNEL_INFO_CMD)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2656 | /* It's the one we want */ |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 2657 | if (msg->msg.data[0] != 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2658 | /* Got an error from the channel, just go on. */ |
| 2659 | |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 2660 | if (msg->msg.data[0] == IPMI_INVALID_COMMAND_ERR) { |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 2661 | /* |
| 2662 | * If the MC does not support this |
| 2663 | * command, that is legal. We just |
| 2664 | * assume it has one IPMB at channel |
| 2665 | * zero. |
| 2666 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2667 | intf->channels[0].medium |
| 2668 | = IPMI_CHANNEL_MEDIUM_IPMB; |
| 2669 | intf->channels[0].protocol |
| 2670 | = IPMI_CHANNEL_PROTOCOL_IPMB; |
| 2671 | rv = -ENOSYS; |
| 2672 | |
| 2673 | intf->curr_channel = IPMI_MAX_CHANNELS; |
| 2674 | wake_up(&intf->waitq); |
| 2675 | goto out; |
| 2676 | } |
| 2677 | goto next_channel; |
| 2678 | } |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 2679 | if (msg->msg.data_len < 4) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2680 | /* Message not big enough, just go on. */ |
| 2681 | goto next_channel; |
| 2682 | } |
| 2683 | chan = intf->curr_channel; |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 2684 | intf->channels[chan].medium = msg->msg.data[2] & 0x7f; |
| 2685 | intf->channels[chan].protocol = msg->msg.data[3] & 0x1f; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2686 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 2687 | next_channel: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2688 | intf->curr_channel++; |
| 2689 | if (intf->curr_channel >= IPMI_MAX_CHANNELS) |
| 2690 | wake_up(&intf->waitq); |
| 2691 | else |
| 2692 | rv = send_channel_info_cmd(intf, intf->curr_channel); |
| 2693 | |
| 2694 | if (rv) { |
| 2695 | /* Got an error somehow, just give up. */ |
| 2696 | intf->curr_channel = IPMI_MAX_CHANNELS; |
| 2697 | wake_up(&intf->waitq); |
| 2698 | |
| 2699 | printk(KERN_WARNING PFX |
| 2700 | "Error sending channel information: %d\n", |
| 2701 | rv); |
| 2702 | } |
| 2703 | } |
| 2704 | out: |
| 2705 | return; |
| 2706 | } |
| 2707 | |
Corey Minyard | fcfa472 | 2007-10-18 03:07:09 -0700 | [diff] [blame] | 2708 | void ipmi_poll_interface(ipmi_user_t user) |
| 2709 | { |
| 2710 | ipmi_smi_t intf = user->intf; |
| 2711 | |
| 2712 | if (intf->handlers->poll) |
| 2713 | intf->handlers->poll(intf->send_info); |
| 2714 | } |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 2715 | EXPORT_SYMBOL(ipmi_poll_interface); |
Corey Minyard | fcfa472 | 2007-10-18 03:07:09 -0700 | [diff] [blame] | 2716 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2717 | int ipmi_register_smi(struct ipmi_smi_handlers *handlers, |
| 2718 | void *send_info, |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2719 | struct ipmi_device_id *device_id, |
| 2720 | struct device *si_dev, |
Corey Minyard | 759643b | 2006-12-06 20:40:59 -0800 | [diff] [blame] | 2721 | const char *sysfs_name, |
Corey Minyard | 453823b | 2006-03-31 02:30:39 -0800 | [diff] [blame] | 2722 | unsigned char slave_addr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2723 | { |
| 2724 | int i, j; |
| 2725 | int rv; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2726 | ipmi_smi_t intf; |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 2727 | ipmi_smi_t tintf; |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 2728 | struct list_head *link; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2729 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 2730 | /* |
| 2731 | * Make sure the driver is actually initialized, this handles |
| 2732 | * problems with initialization order. |
| 2733 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2734 | if (!initialized) { |
| 2735 | rv = ipmi_init_msghandler(); |
| 2736 | if (rv) |
| 2737 | return rv; |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 2738 | /* |
| 2739 | * The init code doesn't return an error if it was turned |
| 2740 | * off, but it won't initialize. Check that. |
| 2741 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2742 | if (!initialized) |
| 2743 | return -ENODEV; |
| 2744 | } |
| 2745 | |
Yoann Padioleau | dd00cc4 | 2007-07-19 01:49:03 -0700 | [diff] [blame] | 2746 | intf = kzalloc(sizeof(*intf), GFP_KERNEL); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2747 | if (!intf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2748 | return -ENOMEM; |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 2749 | |
| 2750 | intf->ipmi_version_major = ipmi_version_major(device_id); |
| 2751 | intf->ipmi_version_minor = ipmi_version_minor(device_id); |
| 2752 | |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2753 | intf->bmc = kzalloc(sizeof(*intf->bmc), GFP_KERNEL); |
| 2754 | if (!intf->bmc) { |
| 2755 | kfree(intf); |
| 2756 | return -ENOMEM; |
| 2757 | } |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 2758 | intf->intf_num = -1; /* Mark it invalid for now. */ |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2759 | kref_init(&intf->refcount); |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2760 | intf->bmc->id = *device_id; |
| 2761 | intf->si_dev = si_dev; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2762 | for (j = 0; j < IPMI_MAX_CHANNELS; j++) { |
| 2763 | intf->channels[j].address = IPMI_BMC_SLAVE_ADDR; |
| 2764 | intf->channels[j].lun = 2; |
| 2765 | } |
| 2766 | if (slave_addr != 0) |
| 2767 | intf->channels[0].address = slave_addr; |
| 2768 | INIT_LIST_HEAD(&intf->users); |
| 2769 | intf->handlers = handlers; |
| 2770 | intf->send_info = send_info; |
| 2771 | spin_lock_init(&intf->seq_lock); |
| 2772 | for (j = 0; j < IPMI_IPMB_NUM_SEQ; j++) { |
| 2773 | intf->seq_table[j].inuse = 0; |
| 2774 | intf->seq_table[j].seqid = 0; |
| 2775 | } |
| 2776 | intf->curr_seq = 0; |
| 2777 | #ifdef CONFIG_PROC_FS |
Corey Minyard | ac01915 | 2007-10-18 03:07:11 -0700 | [diff] [blame] | 2778 | mutex_init(&intf->proc_entry_lock); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2779 | #endif |
| 2780 | spin_lock_init(&intf->waiting_msgs_lock); |
| 2781 | INIT_LIST_HEAD(&intf->waiting_msgs); |
| 2782 | spin_lock_init(&intf->events_lock); |
| 2783 | INIT_LIST_HEAD(&intf->waiting_events); |
| 2784 | intf->waiting_events_count = 0; |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 2785 | mutex_init(&intf->cmd_rcvrs_mutex); |
Corey Minyard | b967513 | 2006-12-06 20:41:02 -0800 | [diff] [blame] | 2786 | spin_lock_init(&intf->maintenance_mode_lock); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2787 | INIT_LIST_HEAD(&intf->cmd_rcvrs); |
| 2788 | init_waitqueue_head(&intf->waitq); |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 2789 | for (i = 0; i < IPMI_NUM_STATS; i++) |
| 2790 | atomic_set(&intf->stats[i], 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2791 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2792 | intf->proc_dir = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2793 | |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 2794 | mutex_lock(&smi_watchers_mutex); |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 2795 | mutex_lock(&ipmi_interfaces_mutex); |
| 2796 | /* Look for a hole in the numbers. */ |
| 2797 | i = 0; |
| 2798 | link = &ipmi_interfaces; |
| 2799 | list_for_each_entry_rcu(tintf, &ipmi_interfaces, link) { |
| 2800 | if (tintf->intf_num != i) { |
| 2801 | link = &tintf->link; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2802 | break; |
| 2803 | } |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 2804 | i++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2805 | } |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 2806 | /* Add the new interface in numeric order. */ |
| 2807 | if (i == 0) |
| 2808 | list_add_rcu(&intf->link, &ipmi_interfaces); |
| 2809 | else |
| 2810 | list_add_tail_rcu(&intf->link, link); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2811 | |
Corey Minyard | 453823b | 2006-03-31 02:30:39 -0800 | [diff] [blame] | 2812 | rv = handlers->start_processing(send_info, intf); |
| 2813 | if (rv) |
| 2814 | goto out; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2815 | |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2816 | get_guid(intf); |
| 2817 | |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 2818 | if ((intf->ipmi_version_major > 1) |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 2819 | || ((intf->ipmi_version_major == 1) |
| 2820 | && (intf->ipmi_version_minor >= 5))) { |
| 2821 | /* |
| 2822 | * Start scanning the channels to see what is |
| 2823 | * available. |
| 2824 | */ |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2825 | intf->null_user_handler = channel_handler; |
| 2826 | intf->curr_channel = 0; |
| 2827 | rv = send_channel_info_cmd(intf, 0); |
| 2828 | if (rv) |
| 2829 | goto out; |
| 2830 | |
| 2831 | /* Wait for the channel info to be read. */ |
| 2832 | wait_event(intf->waitq, |
| 2833 | intf->curr_channel >= IPMI_MAX_CHANNELS); |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2834 | intf->null_user_handler = NULL; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2835 | } else { |
| 2836 | /* Assume a single IPMB channel at zero. */ |
| 2837 | intf->channels[0].medium = IPMI_CHANNEL_MEDIUM_IPMB; |
| 2838 | intf->channels[0].protocol = IPMI_CHANNEL_PROTOCOL_IPMB; |
| 2839 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2840 | |
| 2841 | if (rv == 0) |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2842 | rv = add_proc_entries(intf, i); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2843 | |
Corey Minyard | 759643b | 2006-12-06 20:40:59 -0800 | [diff] [blame] | 2844 | rv = ipmi_bmc_register(intf, i, sysfs_name); |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2845 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2846 | out: |
| 2847 | if (rv) { |
| 2848 | if (intf->proc_dir) |
| 2849 | remove_proc_entries(intf); |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 2850 | intf->handlers = NULL; |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 2851 | list_del_rcu(&intf->link); |
| 2852 | mutex_unlock(&ipmi_interfaces_mutex); |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 2853 | mutex_unlock(&smi_watchers_mutex); |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 2854 | synchronize_rcu(); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2855 | kref_put(&intf->refcount, intf_free); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2856 | } else { |
Corey Minyard | 78ba2fa | 2007-02-10 01:45:45 -0800 | [diff] [blame] | 2857 | /* |
| 2858 | * Keep memory order straight for RCU readers. Make |
| 2859 | * sure everything else is committed to memory before |
| 2860 | * setting intf_num to mark the interface valid. |
| 2861 | */ |
| 2862 | smp_wmb(); |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 2863 | intf->intf_num = i; |
| 2864 | mutex_unlock(&ipmi_interfaces_mutex); |
Corey Minyard | 78ba2fa | 2007-02-10 01:45:45 -0800 | [diff] [blame] | 2865 | /* After this point the interface is legal to use. */ |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2866 | call_smi_watchers(i, intf->si_dev); |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 2867 | mutex_unlock(&smi_watchers_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2868 | } |
| 2869 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2870 | return rv; |
| 2871 | } |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 2872 | EXPORT_SYMBOL(ipmi_register_smi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2873 | |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 2874 | static void cleanup_smi_msgs(ipmi_smi_t intf) |
| 2875 | { |
| 2876 | int i; |
| 2877 | struct seq_table *ent; |
| 2878 | |
| 2879 | /* No need for locks, the interface is down. */ |
| 2880 | for (i = 0; i < IPMI_IPMB_NUM_SEQ; i++) { |
| 2881 | ent = &(intf->seq_table[i]); |
| 2882 | if (!ent->inuse) |
| 2883 | continue; |
| 2884 | deliver_err_response(ent->recv_msg, IPMI_ERR_UNSPECIFIED); |
| 2885 | } |
| 2886 | } |
| 2887 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2888 | int ipmi_unregister_smi(ipmi_smi_t intf) |
| 2889 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2890 | struct ipmi_smi_watcher *w; |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 2891 | int intf_num = intf->intf_num; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2892 | |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2893 | ipmi_bmc_unregister(intf); |
| 2894 | |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 2895 | mutex_lock(&smi_watchers_mutex); |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 2896 | mutex_lock(&ipmi_interfaces_mutex); |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 2897 | intf->intf_num = -1; |
| 2898 | intf->handlers = NULL; |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 2899 | list_del_rcu(&intf->link); |
| 2900 | mutex_unlock(&ipmi_interfaces_mutex); |
| 2901 | synchronize_rcu(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2902 | |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 2903 | cleanup_smi_msgs(intf); |
| 2904 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2905 | remove_proc_entries(intf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2906 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 2907 | /* |
| 2908 | * Call all the watcher interfaces to tell them that |
| 2909 | * an interface is gone. |
| 2910 | */ |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2911 | list_for_each_entry(w, &smi_watchers, link) |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 2912 | w->smi_gone(intf_num); |
| 2913 | mutex_unlock(&smi_watchers_mutex); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2914 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2915 | kref_put(&intf->refcount, intf_free); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2916 | return 0; |
| 2917 | } |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 2918 | EXPORT_SYMBOL(ipmi_unregister_smi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2919 | |
| 2920 | static int handle_ipmb_get_msg_rsp(ipmi_smi_t intf, |
| 2921 | struct ipmi_smi_msg *msg) |
| 2922 | { |
| 2923 | struct ipmi_ipmb_addr ipmb_addr; |
| 2924 | struct ipmi_recv_msg *recv_msg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2925 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 2926 | /* |
| 2927 | * This is 11, not 10, because the response must contain a |
| 2928 | * completion code. |
| 2929 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2930 | if (msg->rsp_size < 11) { |
| 2931 | /* Message not big enough, just ignore it. */ |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 2932 | ipmi_inc_stat(intf, invalid_ipmb_responses); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2933 | return 0; |
| 2934 | } |
| 2935 | |
| 2936 | if (msg->rsp[2] != 0) { |
| 2937 | /* An error getting the response, just ignore it. */ |
| 2938 | return 0; |
| 2939 | } |
| 2940 | |
| 2941 | ipmb_addr.addr_type = IPMI_IPMB_ADDR_TYPE; |
| 2942 | ipmb_addr.slave_addr = msg->rsp[6]; |
| 2943 | ipmb_addr.channel = msg->rsp[3] & 0x0f; |
| 2944 | ipmb_addr.lun = msg->rsp[7] & 3; |
| 2945 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 2946 | /* |
| 2947 | * It's a response from a remote entity. Look up the sequence |
| 2948 | * number and handle the response. |
| 2949 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2950 | if (intf_find_seq(intf, |
| 2951 | msg->rsp[7] >> 2, |
| 2952 | msg->rsp[3] & 0x0f, |
| 2953 | msg->rsp[8], |
| 2954 | (msg->rsp[4] >> 2) & (~1), |
| 2955 | (struct ipmi_addr *) &(ipmb_addr), |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 2956 | &recv_msg)) { |
| 2957 | /* |
| 2958 | * We were unable to find the sequence number, |
| 2959 | * so just nuke the message. |
| 2960 | */ |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 2961 | ipmi_inc_stat(intf, unhandled_ipmb_responses); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2962 | return 0; |
| 2963 | } |
| 2964 | |
| 2965 | memcpy(recv_msg->msg_data, |
| 2966 | &(msg->rsp[9]), |
| 2967 | msg->rsp_size - 9); |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 2968 | /* |
| 2969 | * The other fields matched, so no need to set them, except |
| 2970 | * for netfn, which needs to be the response that was |
| 2971 | * returned, not the request value. |
| 2972 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2973 | recv_msg->msg.netfn = msg->rsp[4] >> 2; |
| 2974 | recv_msg->msg.data = recv_msg->msg_data; |
| 2975 | recv_msg->msg.data_len = msg->rsp_size - 10; |
| 2976 | recv_msg->recv_type = IPMI_RESPONSE_RECV_TYPE; |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 2977 | ipmi_inc_stat(intf, handled_ipmb_responses); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2978 | deliver_response(recv_msg); |
| 2979 | |
| 2980 | return 0; |
| 2981 | } |
| 2982 | |
| 2983 | static int handle_ipmb_get_msg_cmd(ipmi_smi_t intf, |
| 2984 | struct ipmi_smi_msg *msg) |
| 2985 | { |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2986 | struct cmd_rcvr *rcvr; |
| 2987 | int rv = 0; |
| 2988 | unsigned char netfn; |
| 2989 | unsigned char cmd; |
Corey Minyard | c69c312 | 2006-09-30 23:27:56 -0700 | [diff] [blame] | 2990 | unsigned char chan; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 2991 | ipmi_user_t user = NULL; |
| 2992 | struct ipmi_ipmb_addr *ipmb_addr; |
| 2993 | struct ipmi_recv_msg *recv_msg; |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 2994 | struct ipmi_smi_handlers *handlers; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2995 | |
| 2996 | if (msg->rsp_size < 10) { |
| 2997 | /* Message not big enough, just ignore it. */ |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 2998 | ipmi_inc_stat(intf, invalid_commands); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2999 | return 0; |
| 3000 | } |
| 3001 | |
| 3002 | if (msg->rsp[2] != 0) { |
| 3003 | /* An error getting the response, just ignore it. */ |
| 3004 | return 0; |
| 3005 | } |
| 3006 | |
| 3007 | netfn = msg->rsp[4] >> 2; |
| 3008 | cmd = msg->rsp[8]; |
Corey Minyard | c69c312 | 2006-09-30 23:27:56 -0700 | [diff] [blame] | 3009 | chan = msg->rsp[3] & 0xf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3010 | |
Corey Minyard | e61fb5b | 2005-11-07 01:00:05 -0800 | [diff] [blame] | 3011 | rcu_read_lock(); |
Corey Minyard | c69c312 | 2006-09-30 23:27:56 -0700 | [diff] [blame] | 3012 | rcvr = find_cmd_rcvr(intf, netfn, cmd, chan); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3013 | if (rcvr) { |
| 3014 | user = rcvr->user; |
| 3015 | kref_get(&user->refcount); |
| 3016 | } else |
| 3017 | user = NULL; |
Corey Minyard | e61fb5b | 2005-11-07 01:00:05 -0800 | [diff] [blame] | 3018 | rcu_read_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3019 | |
| 3020 | if (user == NULL) { |
| 3021 | /* We didn't find a user, deliver an error response. */ |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 3022 | ipmi_inc_stat(intf, unhandled_commands); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3023 | |
| 3024 | msg->data[0] = (IPMI_NETFN_APP_REQUEST << 2); |
| 3025 | msg->data[1] = IPMI_SEND_MSG_CMD; |
| 3026 | msg->data[2] = msg->rsp[3]; |
| 3027 | msg->data[3] = msg->rsp[6]; |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 3028 | msg->data[4] = ((netfn + 1) << 2) | (msg->rsp[7] & 0x3); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3029 | msg->data[5] = ipmb_checksum(&(msg->data[3]), 2); |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 3030 | msg->data[6] = intf->channels[msg->rsp[3] & 0xf].address; |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 3031 | /* rqseq/lun */ |
| 3032 | msg->data[7] = (msg->rsp[7] & 0xfc) | (msg->rsp[4] & 0x3); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3033 | msg->data[8] = msg->rsp[8]; /* cmd */ |
| 3034 | msg->data[9] = IPMI_INVALID_CMD_COMPLETION_CODE; |
| 3035 | msg->data[10] = ipmb_checksum(&(msg->data[6]), 4); |
| 3036 | msg->data_size = 11; |
| 3037 | |
| 3038 | #ifdef DEBUG_MSGING |
| 3039 | { |
| 3040 | int m; |
| 3041 | printk("Invalid command:"); |
Corey Minyard | e8b3361 | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 3042 | for (m = 0; m < msg->data_size; m++) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3043 | printk(" %2.2x", msg->data[m]); |
| 3044 | printk("\n"); |
| 3045 | } |
| 3046 | #endif |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 3047 | rcu_read_lock(); |
| 3048 | handlers = intf->handlers; |
| 3049 | if (handlers) { |
| 3050 | handlers->sender(intf->send_info, msg, 0); |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 3051 | /* |
| 3052 | * We used the message, so return the value |
| 3053 | * that causes it to not be freed or |
| 3054 | * queued. |
| 3055 | */ |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 3056 | rv = -1; |
| 3057 | } |
| 3058 | rcu_read_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3059 | } else { |
| 3060 | /* Deliver the message to the user. */ |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 3061 | ipmi_inc_stat(intf, handled_commands); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3062 | |
| 3063 | recv_msg = ipmi_alloc_recv_msg(); |
Corey Minyard | 8a3628d | 2006-03-31 02:30:40 -0800 | [diff] [blame] | 3064 | if (!recv_msg) { |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 3065 | /* |
| 3066 | * We couldn't allocate memory for the |
| 3067 | * message, so requeue it for handling |
| 3068 | * later. |
| 3069 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3070 | rv = 1; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3071 | kref_put(&user->refcount, free_user); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3072 | } else { |
| 3073 | /* Extract the source address from the data. */ |
| 3074 | ipmb_addr = (struct ipmi_ipmb_addr *) &recv_msg->addr; |
| 3075 | ipmb_addr->addr_type = IPMI_IPMB_ADDR_TYPE; |
| 3076 | ipmb_addr->slave_addr = msg->rsp[6]; |
| 3077 | ipmb_addr->lun = msg->rsp[7] & 3; |
| 3078 | ipmb_addr->channel = msg->rsp[3] & 0xf; |
| 3079 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 3080 | /* |
| 3081 | * Extract the rest of the message information |
| 3082 | * from the IPMB header. |
| 3083 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3084 | recv_msg->user = user; |
| 3085 | recv_msg->recv_type = IPMI_CMD_RECV_TYPE; |
| 3086 | recv_msg->msgid = msg->rsp[7] >> 2; |
| 3087 | recv_msg->msg.netfn = msg->rsp[4] >> 2; |
| 3088 | recv_msg->msg.cmd = msg->rsp[8]; |
| 3089 | recv_msg->msg.data = recv_msg->msg_data; |
| 3090 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 3091 | /* |
| 3092 | * We chop off 10, not 9 bytes because the checksum |
| 3093 | * at the end also needs to be removed. |
| 3094 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3095 | recv_msg->msg.data_len = msg->rsp_size - 10; |
| 3096 | memcpy(recv_msg->msg_data, |
| 3097 | &(msg->rsp[9]), |
| 3098 | msg->rsp_size - 10); |
| 3099 | deliver_response(recv_msg); |
| 3100 | } |
| 3101 | } |
| 3102 | |
| 3103 | return rv; |
| 3104 | } |
| 3105 | |
| 3106 | static int handle_lan_get_msg_rsp(ipmi_smi_t intf, |
| 3107 | struct ipmi_smi_msg *msg) |
| 3108 | { |
| 3109 | struct ipmi_lan_addr lan_addr; |
| 3110 | struct ipmi_recv_msg *recv_msg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3111 | |
| 3112 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 3113 | /* |
| 3114 | * This is 13, not 12, because the response must contain a |
| 3115 | * completion code. |
| 3116 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3117 | if (msg->rsp_size < 13) { |
| 3118 | /* Message not big enough, just ignore it. */ |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 3119 | ipmi_inc_stat(intf, invalid_lan_responses); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3120 | return 0; |
| 3121 | } |
| 3122 | |
| 3123 | if (msg->rsp[2] != 0) { |
| 3124 | /* An error getting the response, just ignore it. */ |
| 3125 | return 0; |
| 3126 | } |
| 3127 | |
| 3128 | lan_addr.addr_type = IPMI_LAN_ADDR_TYPE; |
| 3129 | lan_addr.session_handle = msg->rsp[4]; |
| 3130 | lan_addr.remote_SWID = msg->rsp[8]; |
| 3131 | lan_addr.local_SWID = msg->rsp[5]; |
| 3132 | lan_addr.channel = msg->rsp[3] & 0x0f; |
| 3133 | lan_addr.privilege = msg->rsp[3] >> 4; |
| 3134 | lan_addr.lun = msg->rsp[9] & 3; |
| 3135 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 3136 | /* |
| 3137 | * It's a response from a remote entity. Look up the sequence |
| 3138 | * number and handle the response. |
| 3139 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3140 | if (intf_find_seq(intf, |
| 3141 | msg->rsp[9] >> 2, |
| 3142 | msg->rsp[3] & 0x0f, |
| 3143 | msg->rsp[10], |
| 3144 | (msg->rsp[6] >> 2) & (~1), |
| 3145 | (struct ipmi_addr *) &(lan_addr), |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 3146 | &recv_msg)) { |
| 3147 | /* |
| 3148 | * We were unable to find the sequence number, |
| 3149 | * so just nuke the message. |
| 3150 | */ |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 3151 | ipmi_inc_stat(intf, unhandled_lan_responses); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3152 | return 0; |
| 3153 | } |
| 3154 | |
| 3155 | memcpy(recv_msg->msg_data, |
| 3156 | &(msg->rsp[11]), |
| 3157 | msg->rsp_size - 11); |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 3158 | /* |
| 3159 | * The other fields matched, so no need to set them, except |
| 3160 | * for netfn, which needs to be the response that was |
| 3161 | * returned, not the request value. |
| 3162 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3163 | recv_msg->msg.netfn = msg->rsp[6] >> 2; |
| 3164 | recv_msg->msg.data = recv_msg->msg_data; |
| 3165 | recv_msg->msg.data_len = msg->rsp_size - 12; |
| 3166 | recv_msg->recv_type = IPMI_RESPONSE_RECV_TYPE; |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 3167 | ipmi_inc_stat(intf, handled_lan_responses); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3168 | deliver_response(recv_msg); |
| 3169 | |
| 3170 | return 0; |
| 3171 | } |
| 3172 | |
| 3173 | static int handle_lan_get_msg_cmd(ipmi_smi_t intf, |
| 3174 | struct ipmi_smi_msg *msg) |
| 3175 | { |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3176 | struct cmd_rcvr *rcvr; |
| 3177 | int rv = 0; |
| 3178 | unsigned char netfn; |
| 3179 | unsigned char cmd; |
Corey Minyard | c69c312 | 2006-09-30 23:27:56 -0700 | [diff] [blame] | 3180 | unsigned char chan; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3181 | ipmi_user_t user = NULL; |
| 3182 | struct ipmi_lan_addr *lan_addr; |
| 3183 | struct ipmi_recv_msg *recv_msg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3184 | |
| 3185 | if (msg->rsp_size < 12) { |
| 3186 | /* Message not big enough, just ignore it. */ |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 3187 | ipmi_inc_stat(intf, invalid_commands); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3188 | return 0; |
| 3189 | } |
| 3190 | |
| 3191 | if (msg->rsp[2] != 0) { |
| 3192 | /* An error getting the response, just ignore it. */ |
| 3193 | return 0; |
| 3194 | } |
| 3195 | |
| 3196 | netfn = msg->rsp[6] >> 2; |
| 3197 | cmd = msg->rsp[10]; |
Corey Minyard | c69c312 | 2006-09-30 23:27:56 -0700 | [diff] [blame] | 3198 | chan = msg->rsp[3] & 0xf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3199 | |
Corey Minyard | e61fb5b | 2005-11-07 01:00:05 -0800 | [diff] [blame] | 3200 | rcu_read_lock(); |
Corey Minyard | c69c312 | 2006-09-30 23:27:56 -0700 | [diff] [blame] | 3201 | rcvr = find_cmd_rcvr(intf, netfn, cmd, chan); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3202 | if (rcvr) { |
| 3203 | user = rcvr->user; |
| 3204 | kref_get(&user->refcount); |
| 3205 | } else |
| 3206 | user = NULL; |
Corey Minyard | e61fb5b | 2005-11-07 01:00:05 -0800 | [diff] [blame] | 3207 | rcu_read_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3208 | |
| 3209 | if (user == NULL) { |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3210 | /* We didn't find a user, just give up. */ |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 3211 | ipmi_inc_stat(intf, unhandled_commands); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3212 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 3213 | /* |
| 3214 | * Don't do anything with these messages, just allow |
| 3215 | * them to be freed. |
| 3216 | */ |
| 3217 | rv = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3218 | } else { |
| 3219 | /* Deliver the message to the user. */ |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 3220 | ipmi_inc_stat(intf, handled_commands); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3221 | |
| 3222 | recv_msg = ipmi_alloc_recv_msg(); |
Corey Minyard | 8a3628d | 2006-03-31 02:30:40 -0800 | [diff] [blame] | 3223 | if (!recv_msg) { |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 3224 | /* |
| 3225 | * We couldn't allocate memory for the |
| 3226 | * message, so requeue it for handling later. |
| 3227 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3228 | rv = 1; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3229 | kref_put(&user->refcount, free_user); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3230 | } else { |
| 3231 | /* Extract the source address from the data. */ |
| 3232 | lan_addr = (struct ipmi_lan_addr *) &recv_msg->addr; |
| 3233 | lan_addr->addr_type = IPMI_LAN_ADDR_TYPE; |
| 3234 | lan_addr->session_handle = msg->rsp[4]; |
| 3235 | lan_addr->remote_SWID = msg->rsp[8]; |
| 3236 | lan_addr->local_SWID = msg->rsp[5]; |
| 3237 | lan_addr->lun = msg->rsp[9] & 3; |
| 3238 | lan_addr->channel = msg->rsp[3] & 0xf; |
| 3239 | lan_addr->privilege = msg->rsp[3] >> 4; |
| 3240 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 3241 | /* |
| 3242 | * Extract the rest of the message information |
| 3243 | * from the IPMB header. |
| 3244 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3245 | recv_msg->user = user; |
| 3246 | recv_msg->recv_type = IPMI_CMD_RECV_TYPE; |
| 3247 | recv_msg->msgid = msg->rsp[9] >> 2; |
| 3248 | recv_msg->msg.netfn = msg->rsp[6] >> 2; |
| 3249 | recv_msg->msg.cmd = msg->rsp[10]; |
| 3250 | recv_msg->msg.data = recv_msg->msg_data; |
| 3251 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 3252 | /* |
| 3253 | * We chop off 12, not 11 bytes because the checksum |
| 3254 | * at the end also needs to be removed. |
| 3255 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3256 | recv_msg->msg.data_len = msg->rsp_size - 12; |
| 3257 | memcpy(recv_msg->msg_data, |
| 3258 | &(msg->rsp[11]), |
| 3259 | msg->rsp_size - 12); |
| 3260 | deliver_response(recv_msg); |
| 3261 | } |
| 3262 | } |
| 3263 | |
| 3264 | return rv; |
| 3265 | } |
| 3266 | |
| 3267 | static void copy_event_into_recv_msg(struct ipmi_recv_msg *recv_msg, |
| 3268 | struct ipmi_smi_msg *msg) |
| 3269 | { |
| 3270 | struct ipmi_system_interface_addr *smi_addr; |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 3271 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3272 | recv_msg->msgid = 0; |
| 3273 | smi_addr = (struct ipmi_system_interface_addr *) &(recv_msg->addr); |
| 3274 | smi_addr->addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; |
| 3275 | smi_addr->channel = IPMI_BMC_CHANNEL; |
| 3276 | smi_addr->lun = msg->rsp[0] & 3; |
| 3277 | recv_msg->recv_type = IPMI_ASYNC_EVENT_RECV_TYPE; |
| 3278 | recv_msg->msg.netfn = msg->rsp[0] >> 2; |
| 3279 | recv_msg->msg.cmd = msg->rsp[1]; |
| 3280 | memcpy(recv_msg->msg_data, &(msg->rsp[3]), msg->rsp_size - 3); |
| 3281 | recv_msg->msg.data = recv_msg->msg_data; |
| 3282 | recv_msg->msg.data_len = msg->rsp_size - 3; |
| 3283 | } |
| 3284 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3285 | static int handle_read_event_rsp(ipmi_smi_t intf, |
| 3286 | struct ipmi_smi_msg *msg) |
| 3287 | { |
| 3288 | struct ipmi_recv_msg *recv_msg, *recv_msg2; |
| 3289 | struct list_head msgs; |
| 3290 | ipmi_user_t user; |
| 3291 | int rv = 0; |
| 3292 | int deliver_count = 0; |
| 3293 | unsigned long flags; |
| 3294 | |
| 3295 | if (msg->rsp_size < 19) { |
| 3296 | /* Message is too small to be an IPMB event. */ |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 3297 | ipmi_inc_stat(intf, invalid_events); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3298 | return 0; |
| 3299 | } |
| 3300 | |
| 3301 | if (msg->rsp[2] != 0) { |
| 3302 | /* An error getting the event, just ignore it. */ |
| 3303 | return 0; |
| 3304 | } |
| 3305 | |
| 3306 | INIT_LIST_HEAD(&msgs); |
| 3307 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3308 | spin_lock_irqsave(&intf->events_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3309 | |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 3310 | ipmi_inc_stat(intf, events); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3311 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 3312 | /* |
| 3313 | * Allocate and fill in one message for every user that is |
| 3314 | * getting events. |
| 3315 | */ |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3316 | rcu_read_lock(); |
| 3317 | list_for_each_entry_rcu(user, &intf->users, link) { |
Corey Minyard | 8a3628d | 2006-03-31 02:30:40 -0800 | [diff] [blame] | 3318 | if (!user->gets_events) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3319 | continue; |
| 3320 | |
| 3321 | recv_msg = ipmi_alloc_recv_msg(); |
Corey Minyard | 8a3628d | 2006-03-31 02:30:40 -0800 | [diff] [blame] | 3322 | if (!recv_msg) { |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3323 | rcu_read_unlock(); |
Corey Minyard | 8a3628d | 2006-03-31 02:30:40 -0800 | [diff] [blame] | 3324 | list_for_each_entry_safe(recv_msg, recv_msg2, &msgs, |
| 3325 | link) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3326 | list_del(&recv_msg->link); |
| 3327 | ipmi_free_recv_msg(recv_msg); |
| 3328 | } |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 3329 | /* |
| 3330 | * We couldn't allocate memory for the |
| 3331 | * message, so requeue it for handling |
| 3332 | * later. |
| 3333 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3334 | rv = 1; |
| 3335 | goto out; |
| 3336 | } |
| 3337 | |
| 3338 | deliver_count++; |
| 3339 | |
| 3340 | copy_event_into_recv_msg(recv_msg, msg); |
| 3341 | recv_msg->user = user; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3342 | kref_get(&user->refcount); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3343 | list_add_tail(&(recv_msg->link), &msgs); |
| 3344 | } |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3345 | rcu_read_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3346 | |
| 3347 | if (deliver_count) { |
| 3348 | /* Now deliver all the messages. */ |
| 3349 | list_for_each_entry_safe(recv_msg, recv_msg2, &msgs, link) { |
| 3350 | list_del(&recv_msg->link); |
| 3351 | deliver_response(recv_msg); |
| 3352 | } |
| 3353 | } else if (intf->waiting_events_count < MAX_EVENTS_IN_QUEUE) { |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 3354 | /* |
| 3355 | * No one to receive the message, put it in queue if there's |
| 3356 | * not already too many things in the queue. |
| 3357 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3358 | recv_msg = ipmi_alloc_recv_msg(); |
Corey Minyard | 8a3628d | 2006-03-31 02:30:40 -0800 | [diff] [blame] | 3359 | if (!recv_msg) { |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 3360 | /* |
| 3361 | * We couldn't allocate memory for the |
| 3362 | * message, so requeue it for handling |
| 3363 | * later. |
| 3364 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3365 | rv = 1; |
| 3366 | goto out; |
| 3367 | } |
| 3368 | |
| 3369 | copy_event_into_recv_msg(recv_msg, msg); |
| 3370 | list_add_tail(&(recv_msg->link), &(intf->waiting_events)); |
Corey Minyard | 4791c03 | 2006-04-10 22:54:31 -0700 | [diff] [blame] | 3371 | intf->waiting_events_count++; |
Corey Minyard | 87ebd06 | 2008-04-29 01:01:04 -0700 | [diff] [blame] | 3372 | } else if (!intf->event_msg_printed) { |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 3373 | /* |
| 3374 | * There's too many things in the queue, discard this |
| 3375 | * message. |
| 3376 | */ |
Corey Minyard | 87ebd06 | 2008-04-29 01:01:04 -0700 | [diff] [blame] | 3377 | printk(KERN_WARNING PFX "Event queue full, discarding" |
| 3378 | " incoming events\n"); |
| 3379 | intf->event_msg_printed = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3380 | } |
| 3381 | |
| 3382 | out: |
| 3383 | spin_unlock_irqrestore(&(intf->events_lock), flags); |
| 3384 | |
| 3385 | return rv; |
| 3386 | } |
| 3387 | |
| 3388 | static int handle_bmc_rsp(ipmi_smi_t intf, |
| 3389 | struct ipmi_smi_msg *msg) |
| 3390 | { |
| 3391 | struct ipmi_recv_msg *recv_msg; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3392 | struct ipmi_user *user; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3393 | |
| 3394 | recv_msg = (struct ipmi_recv_msg *) msg->user_data; |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 3395 | if (recv_msg == NULL) { |
| 3396 | printk(KERN_WARNING |
| 3397 | "IPMI message received with no owner. This\n" |
| 3398 | "could be because of a malformed message, or\n" |
| 3399 | "because of a hardware error. Contact your\n" |
| 3400 | "hardware vender for assistance\n"); |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 3401 | return 0; |
| 3402 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3403 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3404 | user = recv_msg->user; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3405 | /* Make sure the user still exists. */ |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3406 | if (user && !user->valid) { |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 3407 | /* The user for the message went away, so give up. */ |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 3408 | ipmi_inc_stat(intf, unhandled_local_responses); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3409 | ipmi_free_recv_msg(recv_msg); |
| 3410 | } else { |
| 3411 | struct ipmi_system_interface_addr *smi_addr; |
| 3412 | |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 3413 | ipmi_inc_stat(intf, handled_local_responses); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3414 | recv_msg->recv_type = IPMI_RESPONSE_RECV_TYPE; |
| 3415 | recv_msg->msgid = msg->msgid; |
| 3416 | smi_addr = ((struct ipmi_system_interface_addr *) |
| 3417 | &(recv_msg->addr)); |
| 3418 | smi_addr->addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; |
| 3419 | smi_addr->channel = IPMI_BMC_CHANNEL; |
| 3420 | smi_addr->lun = msg->rsp[0] & 3; |
| 3421 | recv_msg->msg.netfn = msg->rsp[0] >> 2; |
| 3422 | recv_msg->msg.cmd = msg->rsp[1]; |
| 3423 | memcpy(recv_msg->msg_data, |
| 3424 | &(msg->rsp[2]), |
| 3425 | msg->rsp_size - 2); |
| 3426 | recv_msg->msg.data = recv_msg->msg_data; |
| 3427 | recv_msg->msg.data_len = msg->rsp_size - 2; |
| 3428 | deliver_response(recv_msg); |
| 3429 | } |
| 3430 | |
| 3431 | return 0; |
| 3432 | } |
| 3433 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 3434 | /* |
| 3435 | * Handle a new message. Return 1 if the message should be requeued, |
| 3436 | * 0 if the message should be freed, or -1 if the message should not |
| 3437 | * be freed or requeued. |
| 3438 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3439 | static int handle_new_recv_msg(ipmi_smi_t intf, |
| 3440 | struct ipmi_smi_msg *msg) |
| 3441 | { |
| 3442 | int requeue; |
| 3443 | int chan; |
| 3444 | |
| 3445 | #ifdef DEBUG_MSGING |
| 3446 | int m; |
| 3447 | printk("Recv:"); |
Corey Minyard | e8b3361 | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 3448 | for (m = 0; m < msg->rsp_size; m++) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3449 | printk(" %2.2x", msg->rsp[m]); |
| 3450 | printk("\n"); |
| 3451 | #endif |
| 3452 | if (msg->rsp_size < 2) { |
| 3453 | /* Message is too small to be correct. */ |
| 3454 | printk(KERN_WARNING PFX "BMC returned to small a message" |
| 3455 | " for netfn %x cmd %x, got %d bytes\n", |
| 3456 | (msg->data[0] >> 2) | 1, msg->data[1], msg->rsp_size); |
| 3457 | |
| 3458 | /* Generate an error response for the message. */ |
| 3459 | msg->rsp[0] = msg->data[0] | (1 << 2); |
| 3460 | msg->rsp[1] = msg->data[1]; |
| 3461 | msg->rsp[2] = IPMI_ERR_UNSPECIFIED; |
| 3462 | msg->rsp_size = 3; |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 3463 | } else if (((msg->rsp[0] >> 2) != ((msg->data[0] >> 2) | 1)) |
| 3464 | || (msg->rsp[1] != msg->data[1])) { |
| 3465 | /* |
| 3466 | * The NetFN and Command in the response is not even |
| 3467 | * marginally correct. |
| 3468 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3469 | printk(KERN_WARNING PFX "BMC returned incorrect response," |
| 3470 | " expected netfn %x cmd %x, got netfn %x cmd %x\n", |
| 3471 | (msg->data[0] >> 2) | 1, msg->data[1], |
| 3472 | msg->rsp[0] >> 2, msg->rsp[1]); |
| 3473 | |
| 3474 | /* Generate an error response for the message. */ |
| 3475 | msg->rsp[0] = msg->data[0] | (1 << 2); |
| 3476 | msg->rsp[1] = msg->data[1]; |
| 3477 | msg->rsp[2] = IPMI_ERR_UNSPECIFIED; |
| 3478 | msg->rsp_size = 3; |
| 3479 | } |
| 3480 | |
| 3481 | if ((msg->rsp[0] == ((IPMI_NETFN_APP_REQUEST|1) << 2)) |
| 3482 | && (msg->rsp[1] == IPMI_SEND_MSG_CMD) |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 3483 | && (msg->user_data != NULL)) { |
| 3484 | /* |
| 3485 | * It's a response to a response we sent. For this we |
| 3486 | * deliver a send message response to the user. |
| 3487 | */ |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3488 | struct ipmi_recv_msg *recv_msg = msg->user_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3489 | |
| 3490 | requeue = 0; |
| 3491 | if (msg->rsp_size < 2) |
| 3492 | /* Message is too small to be correct. */ |
| 3493 | goto out; |
| 3494 | |
| 3495 | chan = msg->data[2] & 0x0f; |
| 3496 | if (chan >= IPMI_MAX_CHANNELS) |
| 3497 | /* Invalid channel number */ |
| 3498 | goto out; |
| 3499 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3500 | if (!recv_msg) |
| 3501 | goto out; |
| 3502 | |
| 3503 | /* Make sure the user still exists. */ |
| 3504 | if (!recv_msg->user || !recv_msg->user->valid) |
| 3505 | goto out; |
| 3506 | |
| 3507 | recv_msg->recv_type = IPMI_RESPONSE_RESPONSE_TYPE; |
| 3508 | recv_msg->msg.data = recv_msg->msg_data; |
| 3509 | recv_msg->msg.data_len = 1; |
| 3510 | recv_msg->msg_data[0] = msg->rsp[2]; |
| 3511 | deliver_response(recv_msg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3512 | } else if ((msg->rsp[0] == ((IPMI_NETFN_APP_REQUEST|1) << 2)) |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 3513 | && (msg->rsp[1] == IPMI_GET_MSG_CMD)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3514 | /* It's from the receive queue. */ |
| 3515 | chan = msg->rsp[3] & 0xf; |
| 3516 | if (chan >= IPMI_MAX_CHANNELS) { |
| 3517 | /* Invalid channel number */ |
| 3518 | requeue = 0; |
| 3519 | goto out; |
| 3520 | } |
| 3521 | |
| 3522 | switch (intf->channels[chan].medium) { |
| 3523 | case IPMI_CHANNEL_MEDIUM_IPMB: |
| 3524 | if (msg->rsp[4] & 0x04) { |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 3525 | /* |
| 3526 | * It's a response, so find the |
| 3527 | * requesting message and send it up. |
| 3528 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3529 | requeue = handle_ipmb_get_msg_rsp(intf, msg); |
| 3530 | } else { |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 3531 | /* |
| 3532 | * It's a command to the SMS from some other |
| 3533 | * entity. Handle that. |
| 3534 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3535 | requeue = handle_ipmb_get_msg_cmd(intf, msg); |
| 3536 | } |
| 3537 | break; |
| 3538 | |
| 3539 | case IPMI_CHANNEL_MEDIUM_8023LAN: |
| 3540 | case IPMI_CHANNEL_MEDIUM_ASYNC: |
| 3541 | if (msg->rsp[6] & 0x04) { |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 3542 | /* |
| 3543 | * It's a response, so find the |
| 3544 | * requesting message and send it up. |
| 3545 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3546 | requeue = handle_lan_get_msg_rsp(intf, msg); |
| 3547 | } else { |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 3548 | /* |
| 3549 | * It's a command to the SMS from some other |
| 3550 | * entity. Handle that. |
| 3551 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3552 | requeue = handle_lan_get_msg_cmd(intf, msg); |
| 3553 | } |
| 3554 | break; |
| 3555 | |
| 3556 | default: |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 3557 | /* |
| 3558 | * We don't handle the channel type, so just |
| 3559 | * free the message. |
| 3560 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3561 | requeue = 0; |
| 3562 | } |
| 3563 | |
| 3564 | } else if ((msg->rsp[0] == ((IPMI_NETFN_APP_REQUEST|1) << 2)) |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 3565 | && (msg->rsp[1] == IPMI_READ_EVENT_MSG_BUFFER_CMD)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3566 | /* It's an asyncronous event. */ |
| 3567 | requeue = handle_read_event_rsp(intf, msg); |
| 3568 | } else { |
| 3569 | /* It's a response from the local BMC. */ |
| 3570 | requeue = handle_bmc_rsp(intf, msg); |
| 3571 | } |
| 3572 | |
| 3573 | out: |
| 3574 | return requeue; |
| 3575 | } |
| 3576 | |
| 3577 | /* Handle a new message from the lower layer. */ |
| 3578 | void ipmi_smi_msg_received(ipmi_smi_t intf, |
| 3579 | struct ipmi_smi_msg *msg) |
| 3580 | { |
Konstantin Baydarov | 5956dce | 2008-04-29 01:01:03 -0700 | [diff] [blame] | 3581 | unsigned long flags = 0; /* keep us warning-free. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3582 | int rv; |
Konstantin Baydarov | 5956dce | 2008-04-29 01:01:03 -0700 | [diff] [blame] | 3583 | int run_to_completion; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3584 | |
| 3585 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3586 | if ((msg->data_size >= 2) |
| 3587 | && (msg->data[0] == (IPMI_NETFN_APP_REQUEST << 2)) |
| 3588 | && (msg->data[1] == IPMI_SEND_MSG_CMD) |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 3589 | && (msg->user_data == NULL)) { |
| 3590 | /* |
| 3591 | * This is the local response to a command send, start |
| 3592 | * the timer for these. The user_data will not be |
| 3593 | * NULL if this is a response send, and we will let |
| 3594 | * response sends just go through. |
| 3595 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3596 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 3597 | /* |
| 3598 | * Check for errors, if we get certain errors (ones |
| 3599 | * that mean basically we can try again later), we |
| 3600 | * ignore them and start the timer. Otherwise we |
| 3601 | * report the error immediately. |
| 3602 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3603 | if ((msg->rsp_size >= 3) && (msg->rsp[2] != 0) |
| 3604 | && (msg->rsp[2] != IPMI_NODE_BUSY_ERR) |
Corey Minyard | 46d52b0 | 2006-11-08 17:44:55 -0800 | [diff] [blame] | 3605 | && (msg->rsp[2] != IPMI_LOST_ARBITRATION_ERR) |
| 3606 | && (msg->rsp[2] != IPMI_BUS_ERR) |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 3607 | && (msg->rsp[2] != IPMI_NAK_ON_WRITE_ERR)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3608 | int chan = msg->rsp[3] & 0xf; |
| 3609 | |
| 3610 | /* Got an error sending the message, handle it. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3611 | if (chan >= IPMI_MAX_CHANNELS) |
| 3612 | ; /* This shouldn't happen */ |
| 3613 | else if ((intf->channels[chan].medium |
| 3614 | == IPMI_CHANNEL_MEDIUM_8023LAN) |
| 3615 | || (intf->channels[chan].medium |
| 3616 | == IPMI_CHANNEL_MEDIUM_ASYNC)) |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 3617 | ipmi_inc_stat(intf, sent_lan_command_errs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3618 | else |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 3619 | ipmi_inc_stat(intf, sent_ipmb_command_errs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3620 | intf_err_seq(intf, msg->msgid, msg->rsp[2]); |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 3621 | } else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3622 | /* The message was sent, start the timer. */ |
| 3623 | intf_start_seq_timer(intf, msg->msgid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3624 | |
| 3625 | ipmi_free_smi_msg(msg); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3626 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3627 | } |
| 3628 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 3629 | /* |
| 3630 | * To preserve message order, if the list is not empty, we |
| 3631 | * tack this message onto the end of the list. |
| 3632 | */ |
Konstantin Baydarov | 5956dce | 2008-04-29 01:01:03 -0700 | [diff] [blame] | 3633 | run_to_completion = intf->run_to_completion; |
| 3634 | if (!run_to_completion) |
| 3635 | spin_lock_irqsave(&intf->waiting_msgs_lock, flags); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3636 | if (!list_empty(&intf->waiting_msgs)) { |
| 3637 | list_add_tail(&msg->link, &intf->waiting_msgs); |
Konstantin Baydarov | 5956dce | 2008-04-29 01:01:03 -0700 | [diff] [blame] | 3638 | if (!run_to_completion) |
| 3639 | spin_unlock_irqrestore(&intf->waiting_msgs_lock, flags); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3640 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3641 | } |
Konstantin Baydarov | 5956dce | 2008-04-29 01:01:03 -0700 | [diff] [blame] | 3642 | if (!run_to_completion) |
| 3643 | spin_unlock_irqrestore(&intf->waiting_msgs_lock, flags); |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 3644 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3645 | rv = handle_new_recv_msg(intf, msg); |
| 3646 | if (rv > 0) { |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 3647 | /* |
| 3648 | * Could not handle the message now, just add it to a |
| 3649 | * list to handle later. |
| 3650 | */ |
Konstantin Baydarov | 5956dce | 2008-04-29 01:01:03 -0700 | [diff] [blame] | 3651 | run_to_completion = intf->run_to_completion; |
| 3652 | if (!run_to_completion) |
| 3653 | spin_lock_irqsave(&intf->waiting_msgs_lock, flags); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3654 | list_add_tail(&msg->link, &intf->waiting_msgs); |
Konstantin Baydarov | 5956dce | 2008-04-29 01:01:03 -0700 | [diff] [blame] | 3655 | if (!run_to_completion) |
| 3656 | spin_unlock_irqrestore(&intf->waiting_msgs_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3657 | } else if (rv == 0) { |
| 3658 | ipmi_free_smi_msg(msg); |
| 3659 | } |
| 3660 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3661 | out: |
| 3662 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3663 | } |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 3664 | EXPORT_SYMBOL(ipmi_smi_msg_received); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3665 | |
| 3666 | void ipmi_smi_watchdog_pretimeout(ipmi_smi_t intf) |
| 3667 | { |
| 3668 | ipmi_user_t user; |
| 3669 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3670 | rcu_read_lock(); |
| 3671 | list_for_each_entry_rcu(user, &intf->users, link) { |
Corey Minyard | 8a3628d | 2006-03-31 02:30:40 -0800 | [diff] [blame] | 3672 | if (!user->handler->ipmi_watchdog_pretimeout) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3673 | continue; |
| 3674 | |
| 3675 | user->handler->ipmi_watchdog_pretimeout(user->handler_data); |
| 3676 | } |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3677 | rcu_read_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3678 | } |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 3679 | EXPORT_SYMBOL(ipmi_smi_watchdog_pretimeout); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3680 | |
Corey Minyard | 882fe01 | 2005-05-01 08:59:12 -0700 | [diff] [blame] | 3681 | static struct ipmi_smi_msg * |
| 3682 | smi_from_recv_msg(ipmi_smi_t intf, struct ipmi_recv_msg *recv_msg, |
| 3683 | unsigned char seq, long seqid) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3684 | { |
Corey Minyard | 882fe01 | 2005-05-01 08:59:12 -0700 | [diff] [blame] | 3685 | struct ipmi_smi_msg *smi_msg = ipmi_alloc_smi_msg(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3686 | if (!smi_msg) |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 3687 | /* |
| 3688 | * If we can't allocate the message, then just return, we |
| 3689 | * get 4 retries, so this should be ok. |
| 3690 | */ |
Corey Minyard | 882fe01 | 2005-05-01 08:59:12 -0700 | [diff] [blame] | 3691 | return NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3692 | |
| 3693 | memcpy(smi_msg->data, recv_msg->msg.data, recv_msg->msg.data_len); |
| 3694 | smi_msg->data_size = recv_msg->msg.data_len; |
| 3695 | smi_msg->msgid = STORE_SEQ_IN_MSGID(seq, seqid); |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 3696 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3697 | #ifdef DEBUG_MSGING |
| 3698 | { |
| 3699 | int m; |
| 3700 | printk("Resend: "); |
Corey Minyard | e8b3361 | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 3701 | for (m = 0; m < smi_msg->data_size; m++) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3702 | printk(" %2.2x", smi_msg->data[m]); |
| 3703 | printk("\n"); |
| 3704 | } |
| 3705 | #endif |
Corey Minyard | 882fe01 | 2005-05-01 08:59:12 -0700 | [diff] [blame] | 3706 | return smi_msg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3707 | } |
| 3708 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3709 | static void check_msg_timeout(ipmi_smi_t intf, struct seq_table *ent, |
| 3710 | struct list_head *timeouts, long timeout_period, |
| 3711 | int slot, unsigned long *flags) |
| 3712 | { |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 3713 | struct ipmi_recv_msg *msg; |
| 3714 | struct ipmi_smi_handlers *handlers; |
| 3715 | |
| 3716 | if (intf->intf_num == -1) |
| 3717 | return; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3718 | |
| 3719 | if (!ent->inuse) |
| 3720 | return; |
| 3721 | |
| 3722 | ent->timeout -= timeout_period; |
| 3723 | if (ent->timeout > 0) |
| 3724 | return; |
| 3725 | |
| 3726 | if (ent->retries_left == 0) { |
| 3727 | /* The message has used all its retries. */ |
| 3728 | ent->inuse = 0; |
| 3729 | msg = ent->recv_msg; |
| 3730 | list_add_tail(&msg->link, timeouts); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3731 | if (ent->broadcast) |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 3732 | ipmi_inc_stat(intf, timed_out_ipmb_broadcasts); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3733 | else if (ent->recv_msg->addr.addr_type == IPMI_LAN_ADDR_TYPE) |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 3734 | ipmi_inc_stat(intf, timed_out_lan_commands); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3735 | else |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 3736 | ipmi_inc_stat(intf, timed_out_ipmb_commands); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3737 | } else { |
| 3738 | struct ipmi_smi_msg *smi_msg; |
| 3739 | /* More retries, send again. */ |
| 3740 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 3741 | /* |
| 3742 | * Start with the max timer, set to normal timer after |
| 3743 | * the message is sent. |
| 3744 | */ |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3745 | ent->timeout = MAX_MSG_TIMEOUT; |
| 3746 | ent->retries_left--; |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3747 | if (ent->recv_msg->addr.addr_type == IPMI_LAN_ADDR_TYPE) |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 3748 | ipmi_inc_stat(intf, retransmitted_lan_commands); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3749 | else |
Konstantin Baydarov | b2655f2 | 2008-04-29 01:01:05 -0700 | [diff] [blame] | 3750 | ipmi_inc_stat(intf, retransmitted_ipmb_commands); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3751 | |
| 3752 | smi_msg = smi_from_recv_msg(intf, ent->recv_msg, slot, |
| 3753 | ent->seqid); |
Corey Minyard | 8a3628d | 2006-03-31 02:30:40 -0800 | [diff] [blame] | 3754 | if (!smi_msg) |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3755 | return; |
| 3756 | |
| 3757 | spin_unlock_irqrestore(&intf->seq_lock, *flags); |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 3758 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 3759 | /* |
| 3760 | * Send the new message. We send with a zero |
| 3761 | * priority. It timed out, I doubt time is that |
| 3762 | * critical now, and high priority messages are really |
| 3763 | * only for messages to the local MC, which don't get |
| 3764 | * resent. |
| 3765 | */ |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 3766 | handlers = intf->handlers; |
| 3767 | if (handlers) |
| 3768 | intf->handlers->sender(intf->send_info, |
| 3769 | smi_msg, 0); |
| 3770 | else |
| 3771 | ipmi_free_smi_msg(smi_msg); |
| 3772 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3773 | spin_lock_irqsave(&intf->seq_lock, *flags); |
| 3774 | } |
| 3775 | } |
| 3776 | |
| 3777 | static void ipmi_timeout_handler(long timeout_period) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3778 | { |
| 3779 | ipmi_smi_t intf; |
| 3780 | struct list_head timeouts; |
| 3781 | struct ipmi_recv_msg *msg, *msg2; |
| 3782 | struct ipmi_smi_msg *smi_msg, *smi_msg2; |
| 3783 | unsigned long flags; |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 3784 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3785 | |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 3786 | rcu_read_lock(); |
| 3787 | list_for_each_entry_rcu(intf, &ipmi_interfaces, link) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3788 | /* See if any waiting messages need to be processed. */ |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3789 | spin_lock_irqsave(&intf->waiting_msgs_lock, flags); |
Corey Minyard | 8a3628d | 2006-03-31 02:30:40 -0800 | [diff] [blame] | 3790 | list_for_each_entry_safe(smi_msg, smi_msg2, |
| 3791 | &intf->waiting_msgs, link) { |
| 3792 | if (!handle_new_recv_msg(intf, smi_msg)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3793 | list_del(&smi_msg->link); |
| 3794 | ipmi_free_smi_msg(smi_msg); |
| 3795 | } else { |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 3796 | /* |
| 3797 | * To preserve message order, quit if we |
| 3798 | * can't handle a message. |
| 3799 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3800 | break; |
| 3801 | } |
| 3802 | } |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3803 | spin_unlock_irqrestore(&intf->waiting_msgs_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3804 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 3805 | /* |
| 3806 | * Go through the seq table and find any messages that |
| 3807 | * have timed out, putting them in the timeouts |
| 3808 | * list. |
| 3809 | */ |
David Barksdale | 41c57a8 | 2007-01-30 14:36:25 -0800 | [diff] [blame] | 3810 | INIT_LIST_HEAD(&timeouts); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3811 | spin_lock_irqsave(&intf->seq_lock, flags); |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 3812 | for (i = 0; i < IPMI_IPMB_NUM_SEQ; i++) |
| 3813 | check_msg_timeout(intf, &(intf->seq_table[i]), |
| 3814 | &timeouts, timeout_period, i, |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3815 | &flags); |
| 3816 | spin_unlock_irqrestore(&intf->seq_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3817 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3818 | list_for_each_entry_safe(msg, msg2, &timeouts, link) |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 3819 | deliver_err_response(msg, IPMI_TIMEOUT_COMPLETION_CODE); |
Corey Minyard | b967513 | 2006-12-06 20:41:02 -0800 | [diff] [blame] | 3820 | |
| 3821 | /* |
| 3822 | * Maintenance mode handling. Check the timeout |
| 3823 | * optimistically before we claim the lock. It may |
| 3824 | * mean a timeout gets missed occasionally, but that |
| 3825 | * only means the timeout gets extended by one period |
| 3826 | * in that case. No big deal, and it avoids the lock |
| 3827 | * most of the time. |
| 3828 | */ |
| 3829 | if (intf->auto_maintenance_timeout > 0) { |
| 3830 | spin_lock_irqsave(&intf->maintenance_mode_lock, flags); |
| 3831 | if (intf->auto_maintenance_timeout > 0) { |
| 3832 | intf->auto_maintenance_timeout |
| 3833 | -= timeout_period; |
| 3834 | if (!intf->maintenance_mode |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 3835 | && (intf->auto_maintenance_timeout <= 0)) { |
Corey Minyard | b967513 | 2006-12-06 20:41:02 -0800 | [diff] [blame] | 3836 | intf->maintenance_mode_enable = 0; |
| 3837 | maintenance_mode_update(intf); |
| 3838 | } |
| 3839 | } |
| 3840 | spin_unlock_irqrestore(&intf->maintenance_mode_lock, |
| 3841 | flags); |
| 3842 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3843 | } |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 3844 | rcu_read_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3845 | } |
| 3846 | |
| 3847 | static void ipmi_request_event(void) |
| 3848 | { |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 3849 | ipmi_smi_t intf; |
| 3850 | struct ipmi_smi_handlers *handlers; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3851 | |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 3852 | rcu_read_lock(); |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 3853 | /* |
| 3854 | * Called from the timer, no need to check if handlers is |
| 3855 | * valid. |
| 3856 | */ |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 3857 | list_for_each_entry_rcu(intf, &ipmi_interfaces, link) { |
Corey Minyard | b967513 | 2006-12-06 20:41:02 -0800 | [diff] [blame] | 3858 | /* No event requests when in maintenance mode. */ |
| 3859 | if (intf->maintenance_mode_enable) |
| 3860 | continue; |
| 3861 | |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 3862 | handlers = intf->handlers; |
| 3863 | if (handlers) |
| 3864 | handlers->request_events(intf->send_info); |
| 3865 | } |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 3866 | rcu_read_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3867 | } |
| 3868 | |
| 3869 | static struct timer_list ipmi_timer; |
| 3870 | |
| 3871 | /* Call every ~100 ms. */ |
| 3872 | #define IPMI_TIMEOUT_TIME 100 |
| 3873 | |
| 3874 | /* How many jiffies does it take to get to the timeout time. */ |
| 3875 | #define IPMI_TIMEOUT_JIFFIES ((IPMI_TIMEOUT_TIME * HZ) / 1000) |
| 3876 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 3877 | /* |
| 3878 | * Request events from the queue every second (this is the number of |
| 3879 | * IPMI_TIMEOUT_TIMES between event requests). Hopefully, in the |
| 3880 | * future, IPMI will add a way to know immediately if an event is in |
| 3881 | * the queue and this silliness can go away. |
| 3882 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3883 | #define IPMI_REQUEST_EV_TIME (1000 / (IPMI_TIMEOUT_TIME)) |
| 3884 | |
Corey Minyard | 8f43f84 | 2005-06-23 22:01:40 -0700 | [diff] [blame] | 3885 | static atomic_t stop_operation; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3886 | static unsigned int ticks_to_req_ev = IPMI_REQUEST_EV_TIME; |
| 3887 | |
| 3888 | static void ipmi_timeout(unsigned long data) |
| 3889 | { |
Corey Minyard | 8f43f84 | 2005-06-23 22:01:40 -0700 | [diff] [blame] | 3890 | if (atomic_read(&stop_operation)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3891 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3892 | |
| 3893 | ticks_to_req_ev--; |
| 3894 | if (ticks_to_req_ev == 0) { |
| 3895 | ipmi_request_event(); |
| 3896 | ticks_to_req_ev = IPMI_REQUEST_EV_TIME; |
| 3897 | } |
| 3898 | |
| 3899 | ipmi_timeout_handler(IPMI_TIMEOUT_TIME); |
| 3900 | |
Corey Minyard | 8f43f84 | 2005-06-23 22:01:40 -0700 | [diff] [blame] | 3901 | mod_timer(&ipmi_timer, jiffies + IPMI_TIMEOUT_JIFFIES); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3902 | } |
| 3903 | |
| 3904 | |
| 3905 | static atomic_t smi_msg_inuse_count = ATOMIC_INIT(0); |
| 3906 | static atomic_t recv_msg_inuse_count = ATOMIC_INIT(0); |
| 3907 | |
| 3908 | /* FIXME - convert these to slabs. */ |
| 3909 | static void free_smi_msg(struct ipmi_smi_msg *msg) |
| 3910 | { |
| 3911 | atomic_dec(&smi_msg_inuse_count); |
| 3912 | kfree(msg); |
| 3913 | } |
| 3914 | |
| 3915 | struct ipmi_smi_msg *ipmi_alloc_smi_msg(void) |
| 3916 | { |
| 3917 | struct ipmi_smi_msg *rv; |
| 3918 | rv = kmalloc(sizeof(struct ipmi_smi_msg), GFP_ATOMIC); |
| 3919 | if (rv) { |
| 3920 | rv->done = free_smi_msg; |
| 3921 | rv->user_data = NULL; |
| 3922 | atomic_inc(&smi_msg_inuse_count); |
| 3923 | } |
| 3924 | return rv; |
| 3925 | } |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 3926 | EXPORT_SYMBOL(ipmi_alloc_smi_msg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3927 | |
| 3928 | static void free_recv_msg(struct ipmi_recv_msg *msg) |
| 3929 | { |
| 3930 | atomic_dec(&recv_msg_inuse_count); |
| 3931 | kfree(msg); |
| 3932 | } |
| 3933 | |
Adrian Bunk | 7400630 | 2008-04-29 01:01:14 -0700 | [diff] [blame] | 3934 | static struct ipmi_recv_msg *ipmi_alloc_recv_msg(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3935 | { |
| 3936 | struct ipmi_recv_msg *rv; |
| 3937 | |
| 3938 | rv = kmalloc(sizeof(struct ipmi_recv_msg), GFP_ATOMIC); |
| 3939 | if (rv) { |
Corey Minyard | a9eec55 | 2006-08-31 21:27:45 -0700 | [diff] [blame] | 3940 | rv->user = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3941 | rv->done = free_recv_msg; |
| 3942 | atomic_inc(&recv_msg_inuse_count); |
| 3943 | } |
| 3944 | return rv; |
| 3945 | } |
| 3946 | |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3947 | void ipmi_free_recv_msg(struct ipmi_recv_msg *msg) |
| 3948 | { |
| 3949 | if (msg->user) |
| 3950 | kref_put(&msg->user->refcount, free_user); |
| 3951 | msg->done(msg); |
| 3952 | } |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 3953 | EXPORT_SYMBOL(ipmi_free_recv_msg); |
Corey Minyard | 393d2cc | 2005-11-07 00:59:54 -0800 | [diff] [blame] | 3954 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3955 | #ifdef CONFIG_IPMI_PANIC_EVENT |
| 3956 | |
| 3957 | static void dummy_smi_done_handler(struct ipmi_smi_msg *msg) |
| 3958 | { |
| 3959 | } |
| 3960 | |
| 3961 | static void dummy_recv_done_handler(struct ipmi_recv_msg *msg) |
| 3962 | { |
| 3963 | } |
| 3964 | |
| 3965 | #ifdef CONFIG_IPMI_PANIC_STRING |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 3966 | 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] | 3967 | { |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 3968 | if ((msg->addr.addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) |
| 3969 | && (msg->msg.netfn == IPMI_NETFN_SENSOR_EVENT_RESPONSE) |
| 3970 | && (msg->msg.cmd == IPMI_GET_EVENT_RECEIVER_CMD) |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 3971 | && (msg->msg.data[0] == IPMI_CC_NO_ERROR)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3972 | /* A get event receiver command, save it. */ |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 3973 | intf->event_receiver = msg->msg.data[1]; |
| 3974 | intf->event_receiver_lun = msg->msg.data[2] & 0x3; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3975 | } |
| 3976 | } |
| 3977 | |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 3978 | 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] | 3979 | { |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 3980 | if ((msg->addr.addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) |
| 3981 | && (msg->msg.netfn == IPMI_NETFN_APP_RESPONSE) |
| 3982 | && (msg->msg.cmd == IPMI_GET_DEVICE_ID_CMD) |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 3983 | && (msg->msg.data[0] == IPMI_CC_NO_ERROR)) { |
| 3984 | /* |
| 3985 | * A get device id command, save if we are an event |
| 3986 | * receiver or generator. |
| 3987 | */ |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 3988 | intf->local_sel_device = (msg->msg.data[6] >> 2) & 1; |
| 3989 | intf->local_event_generator = (msg->msg.data[6] >> 5) & 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3990 | } |
| 3991 | } |
| 3992 | #endif |
| 3993 | |
| 3994 | static void send_panic_events(char *str) |
| 3995 | { |
| 3996 | struct kernel_ipmi_msg msg; |
| 3997 | ipmi_smi_t intf; |
| 3998 | unsigned char data[16]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3999 | struct ipmi_system_interface_addr *si; |
| 4000 | struct ipmi_addr addr; |
| 4001 | struct ipmi_smi_msg smi_msg; |
| 4002 | struct ipmi_recv_msg recv_msg; |
| 4003 | |
| 4004 | si = (struct ipmi_system_interface_addr *) &addr; |
| 4005 | si->addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; |
| 4006 | si->channel = IPMI_BMC_CHANNEL; |
| 4007 | si->lun = 0; |
| 4008 | |
| 4009 | /* Fill in an event telling that we have failed. */ |
| 4010 | msg.netfn = 0x04; /* Sensor or Event. */ |
| 4011 | msg.cmd = 2; /* Platform event command. */ |
| 4012 | msg.data = data; |
| 4013 | msg.data_len = 8; |
Matt Domsch | cda315a | 2005-12-12 00:37:32 -0800 | [diff] [blame] | 4014 | data[0] = 0x41; /* Kernel generator ID, IPMI table 5-4 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4015 | data[1] = 0x03; /* This is for IPMI 1.0. */ |
| 4016 | data[2] = 0x20; /* OS Critical Stop, IPMI table 36-3 */ |
| 4017 | data[4] = 0x6f; /* Sensor specific, IPMI table 36-1 */ |
| 4018 | data[5] = 0xa1; /* Runtime stop OEM bytes 2 & 3. */ |
| 4019 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 4020 | /* |
| 4021 | * Put a few breadcrumbs in. Hopefully later we can add more things |
| 4022 | * to make the panic events more useful. |
| 4023 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4024 | if (str) { |
| 4025 | data[3] = str[0]; |
| 4026 | data[6] = str[1]; |
| 4027 | data[7] = str[2]; |
| 4028 | } |
| 4029 | |
| 4030 | smi_msg.done = dummy_smi_done_handler; |
| 4031 | recv_msg.done = dummy_recv_done_handler; |
| 4032 | |
| 4033 | /* For every registered interface, send the event. */ |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 4034 | list_for_each_entry_rcu(intf, &ipmi_interfaces, link) { |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 4035 | if (!intf->handlers) |
| 4036 | /* Interface is not ready. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4037 | continue; |
| 4038 | |
Konstantin Baydarov | 5956dce | 2008-04-29 01:01:03 -0700 | [diff] [blame] | 4039 | intf->run_to_completion = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4040 | /* Send the event announcing the panic. */ |
| 4041 | intf->handlers->set_run_to_completion(intf->send_info, 1); |
| 4042 | i_ipmi_request(NULL, |
| 4043 | intf, |
| 4044 | &addr, |
| 4045 | 0, |
| 4046 | &msg, |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 4047 | intf, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4048 | &smi_msg, |
| 4049 | &recv_msg, |
| 4050 | 0, |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 4051 | intf->channels[0].address, |
| 4052 | intf->channels[0].lun, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4053 | 0, 1); /* Don't retry, and don't wait. */ |
| 4054 | } |
| 4055 | |
| 4056 | #ifdef CONFIG_IPMI_PANIC_STRING |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 4057 | /* |
| 4058 | * On every interface, dump a bunch of OEM event holding the |
| 4059 | * string. |
| 4060 | */ |
| 4061 | if (!str) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4062 | return; |
| 4063 | |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 4064 | /* For every registered interface, send the event. */ |
| 4065 | list_for_each_entry_rcu(intf, &ipmi_interfaces, link) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4066 | char *p = str; |
| 4067 | struct ipmi_ipmb_addr *ipmb; |
| 4068 | int j; |
| 4069 | |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 4070 | if (intf->intf_num == -1) |
| 4071 | /* Interface was not ready yet. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4072 | continue; |
| 4073 | |
Corey Minyard | 78ba2fa | 2007-02-10 01:45:45 -0800 | [diff] [blame] | 4074 | /* |
| 4075 | * intf_num is used as an marker to tell if the |
| 4076 | * interface is valid. Thus we need a read barrier to |
| 4077 | * make sure data fetched before checking intf_num |
| 4078 | * won't be used. |
| 4079 | */ |
| 4080 | smp_rmb(); |
| 4081 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 4082 | /* |
| 4083 | * First job here is to figure out where to send the |
| 4084 | * OEM events. There's no way in IPMI to send OEM |
| 4085 | * events using an event send command, so we have to |
| 4086 | * find the SEL to put them in and stick them in |
| 4087 | * there. |
| 4088 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4089 | |
| 4090 | /* Get capabilities from the get device id. */ |
| 4091 | intf->local_sel_device = 0; |
| 4092 | intf->local_event_generator = 0; |
| 4093 | intf->event_receiver = 0; |
| 4094 | |
| 4095 | /* Request the device info from the local MC. */ |
| 4096 | msg.netfn = IPMI_NETFN_APP_REQUEST; |
| 4097 | msg.cmd = IPMI_GET_DEVICE_ID_CMD; |
| 4098 | msg.data = NULL; |
| 4099 | msg.data_len = 0; |
| 4100 | intf->null_user_handler = device_id_fetcher; |
| 4101 | i_ipmi_request(NULL, |
| 4102 | intf, |
| 4103 | &addr, |
| 4104 | 0, |
| 4105 | &msg, |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 4106 | intf, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4107 | &smi_msg, |
| 4108 | &recv_msg, |
| 4109 | 0, |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 4110 | intf->channels[0].address, |
| 4111 | intf->channels[0].lun, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4112 | 0, 1); /* Don't retry, and don't wait. */ |
| 4113 | |
| 4114 | if (intf->local_event_generator) { |
| 4115 | /* Request the event receiver from the local MC. */ |
| 4116 | msg.netfn = IPMI_NETFN_SENSOR_EVENT_REQUEST; |
| 4117 | msg.cmd = IPMI_GET_EVENT_RECEIVER_CMD; |
| 4118 | msg.data = NULL; |
| 4119 | msg.data_len = 0; |
| 4120 | intf->null_user_handler = event_receiver_fetcher; |
| 4121 | i_ipmi_request(NULL, |
| 4122 | intf, |
| 4123 | &addr, |
| 4124 | 0, |
| 4125 | &msg, |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 4126 | intf, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4127 | &smi_msg, |
| 4128 | &recv_msg, |
| 4129 | 0, |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 4130 | intf->channels[0].address, |
| 4131 | intf->channels[0].lun, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4132 | 0, 1); /* no retry, and no wait. */ |
| 4133 | } |
| 4134 | intf->null_user_handler = NULL; |
| 4135 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 4136 | /* |
| 4137 | * Validate the event receiver. The low bit must not |
| 4138 | * be 1 (it must be a valid IPMB address), it cannot |
| 4139 | * be zero, and it must not be my address. |
| 4140 | */ |
| 4141 | if (((intf->event_receiver & 1) == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4142 | && (intf->event_receiver != 0) |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 4143 | && (intf->event_receiver != intf->channels[0].address)) { |
| 4144 | /* |
| 4145 | * The event receiver is valid, send an IPMB |
| 4146 | * message. |
| 4147 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4148 | ipmb = (struct ipmi_ipmb_addr *) &addr; |
| 4149 | ipmb->addr_type = IPMI_IPMB_ADDR_TYPE; |
| 4150 | ipmb->channel = 0; /* FIXME - is this right? */ |
| 4151 | ipmb->lun = intf->event_receiver_lun; |
| 4152 | ipmb->slave_addr = intf->event_receiver; |
| 4153 | } else if (intf->local_sel_device) { |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 4154 | /* |
| 4155 | * The event receiver was not valid (or was |
| 4156 | * me), but I am an SEL device, just dump it |
| 4157 | * in my SEL. |
| 4158 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4159 | si = (struct ipmi_system_interface_addr *) &addr; |
| 4160 | si->addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; |
| 4161 | si->channel = IPMI_BMC_CHANNEL; |
| 4162 | si->lun = 0; |
| 4163 | } else |
| 4164 | continue; /* No where to send the event. */ |
| 4165 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4166 | msg.netfn = IPMI_NETFN_STORAGE_REQUEST; /* Storage. */ |
| 4167 | msg.cmd = IPMI_ADD_SEL_ENTRY_CMD; |
| 4168 | msg.data = data; |
| 4169 | msg.data_len = 16; |
| 4170 | |
| 4171 | j = 0; |
| 4172 | while (*p) { |
| 4173 | int size = strlen(p); |
| 4174 | |
| 4175 | if (size > 11) |
| 4176 | size = 11; |
| 4177 | data[0] = 0; |
| 4178 | data[1] = 0; |
| 4179 | data[2] = 0xf0; /* OEM event without timestamp. */ |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 4180 | data[3] = intf->channels[0].address; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4181 | data[4] = j++; /* sequence # */ |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 4182 | /* |
| 4183 | * Always give 11 bytes, so strncpy will fill |
| 4184 | * it with zeroes for me. |
| 4185 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4186 | strncpy(data+5, p, 11); |
| 4187 | p += size; |
| 4188 | |
| 4189 | i_ipmi_request(NULL, |
| 4190 | intf, |
| 4191 | &addr, |
| 4192 | 0, |
| 4193 | &msg, |
Corey Minyard | 56a55ec | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 4194 | intf, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4195 | &smi_msg, |
| 4196 | &recv_msg, |
| 4197 | 0, |
Corey Minyard | c14979b | 2005-09-06 15:18:38 -0700 | [diff] [blame] | 4198 | intf->channels[0].address, |
| 4199 | intf->channels[0].lun, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4200 | 0, 1); /* no retry, and no wait. */ |
| 4201 | } |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 4202 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4203 | #endif /* CONFIG_IPMI_PANIC_STRING */ |
| 4204 | } |
| 4205 | #endif /* CONFIG_IPMI_PANIC_EVENT */ |
| 4206 | |
Randy Dunlap | 0c8204b | 2006-12-10 02:19:06 -0800 | [diff] [blame] | 4207 | static int has_panicked; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4208 | |
| 4209 | static int panic_event(struct notifier_block *this, |
| 4210 | unsigned long event, |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 4211 | void *ptr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4212 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4213 | ipmi_smi_t intf; |
| 4214 | |
Lee Revell | f18190b | 2006-06-26 18:30:00 +0200 | [diff] [blame] | 4215 | if (has_panicked) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4216 | return NOTIFY_DONE; |
Lee Revell | f18190b | 2006-06-26 18:30:00 +0200 | [diff] [blame] | 4217 | has_panicked = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4218 | |
| 4219 | /* For every registered interface, set it to run to completion. */ |
Corey Minyard | bca0324 | 2006-12-06 20:40:57 -0800 | [diff] [blame] | 4220 | list_for_each_entry_rcu(intf, &ipmi_interfaces, link) { |
Corey Minyard | b2c0394 | 2006-12-06 20:41:00 -0800 | [diff] [blame] | 4221 | if (!intf->handlers) |
| 4222 | /* Interface is not ready. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4223 | continue; |
| 4224 | |
Konstantin Baydarov | 5956dce | 2008-04-29 01:01:03 -0700 | [diff] [blame] | 4225 | intf->run_to_completion = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4226 | intf->handlers->set_run_to_completion(intf->send_info, 1); |
| 4227 | } |
| 4228 | |
| 4229 | #ifdef CONFIG_IPMI_PANIC_EVENT |
| 4230 | send_panic_events(ptr); |
| 4231 | #endif |
| 4232 | |
| 4233 | return NOTIFY_DONE; |
| 4234 | } |
| 4235 | |
| 4236 | static struct notifier_block panic_block = { |
| 4237 | .notifier_call = panic_event, |
| 4238 | .next = NULL, |
| 4239 | .priority = 200 /* priority: INT_MAX >= x >= 0 */ |
| 4240 | }; |
| 4241 | |
| 4242 | static int ipmi_init_msghandler(void) |
| 4243 | { |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 4244 | int rv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4245 | |
| 4246 | if (initialized) |
| 4247 | return 0; |
| 4248 | |
Darrick J. Wong | fe2d5ff | 2008-11-12 13:25:00 -0800 | [diff] [blame] | 4249 | rv = driver_register(&ipmidriver.driver); |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 4250 | if (rv) { |
| 4251 | printk(KERN_ERR PFX "Could not register IPMI driver\n"); |
| 4252 | return rv; |
| 4253 | } |
| 4254 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4255 | printk(KERN_INFO "ipmi message handler version " |
Corey Minyard | 1fdd75b | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 4256 | IPMI_DRIVER_VERSION "\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4257 | |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 4258 | #ifdef CONFIG_PROC_FS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4259 | proc_ipmi_root = proc_mkdir("ipmi", NULL); |
| 4260 | if (!proc_ipmi_root) { |
| 4261 | printk(KERN_ERR PFX "Unable to create IPMI proc dir"); |
| 4262 | return -ENOMEM; |
| 4263 | } |
| 4264 | |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 4265 | #endif /* CONFIG_PROC_FS */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4266 | |
Corey Minyard | 409035e | 2006-06-28 04:26:53 -0700 | [diff] [blame] | 4267 | setup_timer(&ipmi_timer, ipmi_timeout, 0); |
| 4268 | mod_timer(&ipmi_timer, jiffies + IPMI_TIMEOUT_JIFFIES); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4269 | |
Alan Stern | e041c68 | 2006-03-27 01:16:30 -0800 | [diff] [blame] | 4270 | atomic_notifier_chain_register(&panic_notifier_list, &panic_block); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4271 | |
| 4272 | initialized = 1; |
| 4273 | |
| 4274 | return 0; |
| 4275 | } |
| 4276 | |
| 4277 | static __init int ipmi_init_msghandler_mod(void) |
| 4278 | { |
| 4279 | ipmi_init_msghandler(); |
| 4280 | return 0; |
| 4281 | } |
| 4282 | |
| 4283 | static __exit void cleanup_ipmi(void) |
| 4284 | { |
| 4285 | int count; |
| 4286 | |
| 4287 | if (!initialized) |
| 4288 | return; |
| 4289 | |
Alan Stern | e041c68 | 2006-03-27 01:16:30 -0800 | [diff] [blame] | 4290 | atomic_notifier_chain_unregister(&panic_notifier_list, &panic_block); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4291 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 4292 | /* |
| 4293 | * This can't be called if any interfaces exist, so no worry |
| 4294 | * about shutting down the interfaces. |
| 4295 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4296 | |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 4297 | /* |
| 4298 | * Tell the timer to stop, then wait for it to stop. This |
| 4299 | * avoids problems with race conditions removing the timer |
| 4300 | * here. |
| 4301 | */ |
Corey Minyard | 8f43f84 | 2005-06-23 22:01:40 -0700 | [diff] [blame] | 4302 | atomic_inc(&stop_operation); |
| 4303 | del_timer_sync(&ipmi_timer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4304 | |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 4305 | #ifdef CONFIG_PROC_FS |
Alexey Dobriyan | 3542ae4 | 2007-10-16 23:26:50 -0700 | [diff] [blame] | 4306 | remove_proc_entry(proc_ipmi_root->name, NULL); |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 4307 | #endif /* CONFIG_PROC_FS */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4308 | |
Darrick J. Wong | fe2d5ff | 2008-11-12 13:25:00 -0800 | [diff] [blame] | 4309 | driver_unregister(&ipmidriver.driver); |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 4310 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4311 | initialized = 0; |
| 4312 | |
| 4313 | /* Check for buffer leaks. */ |
| 4314 | count = atomic_read(&smi_msg_inuse_count); |
| 4315 | if (count != 0) |
| 4316 | printk(KERN_WARNING PFX "SMI message count %d at exit\n", |
| 4317 | count); |
| 4318 | count = atomic_read(&recv_msg_inuse_count); |
| 4319 | if (count != 0) |
| 4320 | printk(KERN_WARNING PFX "recv message count %d at exit\n", |
| 4321 | count); |
| 4322 | } |
| 4323 | module_exit(cleanup_ipmi); |
| 4324 | |
| 4325 | module_init(ipmi_init_msghandler_mod); |
| 4326 | MODULE_LICENSE("GPL"); |
Corey Minyard | 1fdd75b | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 4327 | MODULE_AUTHOR("Corey Minyard <minyard@mvista.com>"); |
Corey Minyard | c70d749 | 2008-04-29 01:01:09 -0700 | [diff] [blame] | 4328 | MODULE_DESCRIPTION("Incoming and outgoing message routing for an IPMI" |
| 4329 | " interface."); |
Corey Minyard | 1fdd75b | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 4330 | MODULE_VERSION(IPMI_DRIVER_VERSION); |