Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * ipmi_poweroff.c |
| 3 | * |
| 4 | * MontaVista IPMI Poweroff extension to sys_reboot |
| 5 | * |
| 6 | * Author: MontaVista Software, Inc. |
| 7 | * Steven Dake <sdake@mvista.com> |
| 8 | * Corey Minyard <cminyard@mvista.com> |
| 9 | * source@mvista.com |
| 10 | * |
| 11 | * Copyright 2002,2004 MontaVista Software Inc. |
| 12 | * |
| 13 | * This program is free software; you can redistribute it and/or modify it |
| 14 | * under the terms of the GNU General Public License as published by the |
| 15 | * Free Software Foundation; either version 2 of the License, or (at your |
| 16 | * option) any later version. |
| 17 | * |
| 18 | * |
| 19 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| 20 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 21 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 22 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 23 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
| 24 | * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
| 25 | * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| 26 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR |
| 27 | * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE |
| 28 | * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 29 | * |
| 30 | * You should have received a copy of the GNU General Public License along |
| 31 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 32 | * 675 Mass Ave, Cambridge, MA 02139, USA. |
| 33 | */ |
Corey Minyard | 77cf397 | 2005-06-23 22:01:44 -0700 | [diff] [blame^] | 34 | #include <linux/config.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | #include <linux/module.h> |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 36 | #include <linux/moduleparam.h> |
| 37 | #include <linux/proc_fs.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | #include <linux/string.h> |
Corey Minyard | 77cf397 | 2005-06-23 22:01:44 -0700 | [diff] [blame^] | 39 | #include <linux/completion.h> |
| 40 | #include <linux/kdev_t.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | #include <linux/ipmi.h> |
| 42 | #include <linux/ipmi_smi.h> |
| 43 | |
| 44 | #define PFX "IPMI poweroff: " |
| 45 | #define IPMI_POWEROFF_VERSION "v33" |
| 46 | |
| 47 | /* Where to we insert our poweroff function? */ |
| 48 | extern void (*pm_power_off)(void); |
| 49 | |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 50 | /* Definitions for controlling power off (if the system supports it). It |
| 51 | * conveniently matches the IPMI chassis control values. */ |
| 52 | #define IPMI_CHASSIS_POWER_DOWN 0 /* power down, the default. */ |
| 53 | #define IPMI_CHASSIS_POWER_CYCLE 0x02 /* power cycle */ |
| 54 | |
| 55 | /* the IPMI data command */ |
| 56 | static int poweroff_control = IPMI_CHASSIS_POWER_DOWN; |
| 57 | |
| 58 | /* parameter definition to allow user to flag power cycle */ |
| 59 | module_param(poweroff_control, int, IPMI_CHASSIS_POWER_DOWN); |
| 60 | MODULE_PARM_DESC(poweroff_control, " Set to 2 to enable power cycle instead of power down. Power cycle is contingent on hardware support, otherwise it defaults back to power down."); |
| 61 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | /* Stuff from the get device id command. */ |
| 63 | static unsigned int mfg_id; |
| 64 | static unsigned int prod_id; |
| 65 | static unsigned char capabilities; |
| 66 | |
| 67 | /* We use our own messages for this operation, we don't let the system |
| 68 | allocate them, since we may be in a panic situation. The whole |
| 69 | thing is single-threaded, anyway, so multiple messages are not |
| 70 | required. */ |
| 71 | static void dummy_smi_free(struct ipmi_smi_msg *msg) |
| 72 | { |
| 73 | } |
| 74 | static void dummy_recv_free(struct ipmi_recv_msg *msg) |
| 75 | { |
| 76 | } |
| 77 | static struct ipmi_smi_msg halt_smi_msg = |
| 78 | { |
| 79 | .done = dummy_smi_free |
| 80 | }; |
| 81 | static struct ipmi_recv_msg halt_recv_msg = |
| 82 | { |
| 83 | .done = dummy_recv_free |
| 84 | }; |
| 85 | |
| 86 | |
| 87 | /* |
| 88 | * Code to send a message and wait for the reponse. |
| 89 | */ |
| 90 | |
| 91 | static void receive_handler(struct ipmi_recv_msg *recv_msg, void *handler_data) |
| 92 | { |
Corey Minyard | 77cf397 | 2005-06-23 22:01:44 -0700 | [diff] [blame^] | 93 | struct completion *comp = recv_msg->user_msg_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 94 | |
Corey Minyard | 77cf397 | 2005-06-23 22:01:44 -0700 | [diff] [blame^] | 95 | if (comp) |
| 96 | complete(comp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 97 | } |
| 98 | |
| 99 | static struct ipmi_user_hndl ipmi_poweroff_handler = |
| 100 | { |
| 101 | .ipmi_recv_hndl = receive_handler |
| 102 | }; |
| 103 | |
| 104 | |
| 105 | static int ipmi_request_wait_for_response(ipmi_user_t user, |
| 106 | struct ipmi_addr *addr, |
| 107 | struct kernel_ipmi_msg *send_msg) |
| 108 | { |
Corey Minyard | 77cf397 | 2005-06-23 22:01:44 -0700 | [diff] [blame^] | 109 | int rv; |
| 110 | struct completion comp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 111 | |
Corey Minyard | 77cf397 | 2005-06-23 22:01:44 -0700 | [diff] [blame^] | 112 | init_completion(&comp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | |
Corey Minyard | 77cf397 | 2005-06-23 22:01:44 -0700 | [diff] [blame^] | 114 | rv = ipmi_request_supply_msgs(user, addr, 0, send_msg, &comp, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | &halt_smi_msg, &halt_recv_msg, 0); |
| 116 | if (rv) |
| 117 | return rv; |
| 118 | |
Corey Minyard | 77cf397 | 2005-06-23 22:01:44 -0700 | [diff] [blame^] | 119 | wait_for_completion(&comp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 120 | |
| 121 | return halt_recv_msg.msg.data[0]; |
| 122 | } |
| 123 | |
Corey Minyard | 77cf397 | 2005-06-23 22:01:44 -0700 | [diff] [blame^] | 124 | /* We are in run-to-completion mode, no completion is desired. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 125 | static int ipmi_request_in_rc_mode(ipmi_user_t user, |
| 126 | struct ipmi_addr *addr, |
| 127 | struct kernel_ipmi_msg *send_msg) |
| 128 | { |
Corey Minyard | 77cf397 | 2005-06-23 22:01:44 -0700 | [diff] [blame^] | 129 | int rv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 130 | |
| 131 | rv = ipmi_request_supply_msgs(user, addr, 0, send_msg, NULL, |
| 132 | &halt_smi_msg, &halt_recv_msg, 0); |
| 133 | if (rv) |
| 134 | return rv; |
| 135 | |
| 136 | return halt_recv_msg.msg.data[0]; |
| 137 | } |
| 138 | |
| 139 | /* |
| 140 | * ATCA Support |
| 141 | */ |
| 142 | |
| 143 | #define IPMI_NETFN_ATCA 0x2c |
| 144 | #define IPMI_ATCA_SET_POWER_CMD 0x11 |
| 145 | #define IPMI_ATCA_GET_ADDR_INFO_CMD 0x01 |
| 146 | #define IPMI_PICMG_ID 0 |
| 147 | |
| 148 | static int ipmi_atca_detect (ipmi_user_t user) |
| 149 | { |
| 150 | struct ipmi_system_interface_addr smi_addr; |
| 151 | struct kernel_ipmi_msg send_msg; |
| 152 | int rv; |
| 153 | unsigned char data[1]; |
| 154 | |
| 155 | /* |
| 156 | * Configure IPMI address for local access |
| 157 | */ |
| 158 | smi_addr.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; |
| 159 | smi_addr.channel = IPMI_BMC_CHANNEL; |
| 160 | smi_addr.lun = 0; |
| 161 | |
| 162 | /* |
| 163 | * Use get address info to check and see if we are ATCA |
| 164 | */ |
| 165 | send_msg.netfn = IPMI_NETFN_ATCA; |
| 166 | send_msg.cmd = IPMI_ATCA_GET_ADDR_INFO_CMD; |
| 167 | data[0] = IPMI_PICMG_ID; |
| 168 | send_msg.data = data; |
| 169 | send_msg.data_len = sizeof(data); |
| 170 | rv = ipmi_request_wait_for_response(user, |
| 171 | (struct ipmi_addr *) &smi_addr, |
| 172 | &send_msg); |
| 173 | return !rv; |
| 174 | } |
| 175 | |
| 176 | static void ipmi_poweroff_atca (ipmi_user_t user) |
| 177 | { |
| 178 | struct ipmi_system_interface_addr smi_addr; |
| 179 | struct kernel_ipmi_msg send_msg; |
| 180 | int rv; |
| 181 | unsigned char data[4]; |
| 182 | |
| 183 | /* |
| 184 | * Configure IPMI address for local access |
| 185 | */ |
| 186 | smi_addr.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; |
| 187 | smi_addr.channel = IPMI_BMC_CHANNEL; |
| 188 | smi_addr.lun = 0; |
| 189 | |
| 190 | printk(KERN_INFO PFX "Powering down via ATCA power command\n"); |
| 191 | |
| 192 | /* |
| 193 | * Power down |
| 194 | */ |
| 195 | send_msg.netfn = IPMI_NETFN_ATCA; |
| 196 | send_msg.cmd = IPMI_ATCA_SET_POWER_CMD; |
| 197 | data[0] = IPMI_PICMG_ID; |
| 198 | data[1] = 0; /* FRU id */ |
| 199 | data[2] = 0; /* Power Level */ |
| 200 | data[3] = 0; /* Don't change saved presets */ |
| 201 | send_msg.data = data; |
| 202 | send_msg.data_len = sizeof (data); |
| 203 | rv = ipmi_request_in_rc_mode(user, |
| 204 | (struct ipmi_addr *) &smi_addr, |
| 205 | &send_msg); |
| 206 | if (rv) { |
| 207 | printk(KERN_ERR PFX "Unable to send ATCA powerdown message," |
| 208 | " IPMI error 0x%x\n", rv); |
| 209 | goto out; |
| 210 | } |
| 211 | |
| 212 | out: |
| 213 | return; |
| 214 | } |
| 215 | |
| 216 | /* |
| 217 | * CPI1 Support |
| 218 | */ |
| 219 | |
| 220 | #define IPMI_NETFN_OEM_1 0xf8 |
| 221 | #define OEM_GRP_CMD_SET_RESET_STATE 0x84 |
| 222 | #define OEM_GRP_CMD_SET_POWER_STATE 0x82 |
| 223 | #define IPMI_NETFN_OEM_8 0xf8 |
| 224 | #define OEM_GRP_CMD_REQUEST_HOTSWAP_CTRL 0x80 |
| 225 | #define OEM_GRP_CMD_GET_SLOT_GA 0xa3 |
| 226 | #define IPMI_NETFN_SENSOR_EVT 0x10 |
| 227 | #define IPMI_CMD_GET_EVENT_RECEIVER 0x01 |
| 228 | |
| 229 | #define IPMI_CPI1_PRODUCT_ID 0x000157 |
| 230 | #define IPMI_CPI1_MANUFACTURER_ID 0x0108 |
| 231 | |
| 232 | static int ipmi_cpi1_detect (ipmi_user_t user) |
| 233 | { |
| 234 | return ((mfg_id == IPMI_CPI1_MANUFACTURER_ID) |
| 235 | && (prod_id == IPMI_CPI1_PRODUCT_ID)); |
| 236 | } |
| 237 | |
| 238 | static void ipmi_poweroff_cpi1 (ipmi_user_t user) |
| 239 | { |
| 240 | struct ipmi_system_interface_addr smi_addr; |
| 241 | struct ipmi_ipmb_addr ipmb_addr; |
| 242 | struct kernel_ipmi_msg send_msg; |
| 243 | int rv; |
| 244 | unsigned char data[1]; |
| 245 | int slot; |
| 246 | unsigned char hotswap_ipmb; |
| 247 | unsigned char aer_addr; |
| 248 | unsigned char aer_lun; |
| 249 | |
| 250 | /* |
| 251 | * Configure IPMI address for local access |
| 252 | */ |
| 253 | smi_addr.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; |
| 254 | smi_addr.channel = IPMI_BMC_CHANNEL; |
| 255 | smi_addr.lun = 0; |
| 256 | |
| 257 | printk(KERN_INFO PFX "Powering down via CPI1 power command\n"); |
| 258 | |
| 259 | /* |
| 260 | * Get IPMI ipmb address |
| 261 | */ |
| 262 | send_msg.netfn = IPMI_NETFN_OEM_8 >> 2; |
| 263 | send_msg.cmd = OEM_GRP_CMD_GET_SLOT_GA; |
| 264 | send_msg.data = NULL; |
| 265 | send_msg.data_len = 0; |
| 266 | rv = ipmi_request_in_rc_mode(user, |
| 267 | (struct ipmi_addr *) &smi_addr, |
| 268 | &send_msg); |
| 269 | if (rv) |
| 270 | goto out; |
| 271 | slot = halt_recv_msg.msg.data[1]; |
| 272 | hotswap_ipmb = (slot > 9) ? (0xb0 + 2 * slot) : (0xae + 2 * slot); |
| 273 | |
| 274 | /* |
| 275 | * Get active event receiver |
| 276 | */ |
| 277 | send_msg.netfn = IPMI_NETFN_SENSOR_EVT >> 2; |
| 278 | send_msg.cmd = IPMI_CMD_GET_EVENT_RECEIVER; |
| 279 | send_msg.data = NULL; |
| 280 | send_msg.data_len = 0; |
| 281 | rv = ipmi_request_in_rc_mode(user, |
| 282 | (struct ipmi_addr *) &smi_addr, |
| 283 | &send_msg); |
| 284 | if (rv) |
| 285 | goto out; |
| 286 | aer_addr = halt_recv_msg.msg.data[1]; |
| 287 | aer_lun = halt_recv_msg.msg.data[2]; |
| 288 | |
| 289 | /* |
| 290 | * Setup IPMB address target instead of local target |
| 291 | */ |
| 292 | ipmb_addr.addr_type = IPMI_IPMB_ADDR_TYPE; |
| 293 | ipmb_addr.channel = 0; |
| 294 | ipmb_addr.slave_addr = aer_addr; |
| 295 | ipmb_addr.lun = aer_lun; |
| 296 | |
| 297 | /* |
| 298 | * Send request hotswap control to remove blade from dpv |
| 299 | */ |
| 300 | send_msg.netfn = IPMI_NETFN_OEM_8 >> 2; |
| 301 | send_msg.cmd = OEM_GRP_CMD_REQUEST_HOTSWAP_CTRL; |
| 302 | send_msg.data = &hotswap_ipmb; |
| 303 | send_msg.data_len = 1; |
| 304 | ipmi_request_in_rc_mode(user, |
| 305 | (struct ipmi_addr *) &ipmb_addr, |
| 306 | &send_msg); |
| 307 | |
| 308 | /* |
| 309 | * Set reset asserted |
| 310 | */ |
| 311 | send_msg.netfn = IPMI_NETFN_OEM_1 >> 2; |
| 312 | send_msg.cmd = OEM_GRP_CMD_SET_RESET_STATE; |
| 313 | send_msg.data = data; |
| 314 | data[0] = 1; /* Reset asserted state */ |
| 315 | send_msg.data_len = 1; |
| 316 | rv = ipmi_request_in_rc_mode(user, |
| 317 | (struct ipmi_addr *) &smi_addr, |
| 318 | &send_msg); |
| 319 | if (rv) |
| 320 | goto out; |
| 321 | |
| 322 | /* |
| 323 | * Power down |
| 324 | */ |
| 325 | send_msg.netfn = IPMI_NETFN_OEM_1 >> 2; |
| 326 | send_msg.cmd = OEM_GRP_CMD_SET_POWER_STATE; |
| 327 | send_msg.data = data; |
| 328 | data[0] = 1; /* Power down state */ |
| 329 | send_msg.data_len = 1; |
| 330 | rv = ipmi_request_in_rc_mode(user, |
| 331 | (struct ipmi_addr *) &smi_addr, |
| 332 | &send_msg); |
| 333 | if (rv) |
| 334 | goto out; |
| 335 | |
| 336 | out: |
| 337 | return; |
| 338 | } |
| 339 | |
| 340 | /* |
| 341 | * Standard chassis support |
| 342 | */ |
| 343 | |
| 344 | #define IPMI_NETFN_CHASSIS_REQUEST 0 |
| 345 | #define IPMI_CHASSIS_CONTROL_CMD 0x02 |
| 346 | |
| 347 | static int ipmi_chassis_detect (ipmi_user_t user) |
| 348 | { |
| 349 | /* Chassis support, use it. */ |
| 350 | return (capabilities & 0x80); |
| 351 | } |
| 352 | |
| 353 | static void ipmi_poweroff_chassis (ipmi_user_t user) |
| 354 | { |
| 355 | struct ipmi_system_interface_addr smi_addr; |
| 356 | struct kernel_ipmi_msg send_msg; |
| 357 | int rv; |
| 358 | unsigned char data[1]; |
| 359 | |
| 360 | /* |
| 361 | * Configure IPMI address for local access |
| 362 | */ |
| 363 | smi_addr.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; |
| 364 | smi_addr.channel = IPMI_BMC_CHANNEL; |
| 365 | smi_addr.lun = 0; |
| 366 | |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 367 | powercyclefailed: |
| 368 | printk(KERN_INFO PFX "Powering %s via IPMI chassis control command\n", |
| 369 | ((poweroff_control != IPMI_CHASSIS_POWER_CYCLE) ? "down" : "cycle")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 370 | |
| 371 | /* |
| 372 | * Power down |
| 373 | */ |
| 374 | send_msg.netfn = IPMI_NETFN_CHASSIS_REQUEST; |
| 375 | send_msg.cmd = IPMI_CHASSIS_CONTROL_CMD; |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 376 | data[0] = poweroff_control; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 377 | send_msg.data = data; |
| 378 | send_msg.data_len = sizeof(data); |
| 379 | rv = ipmi_request_in_rc_mode(user, |
| 380 | (struct ipmi_addr *) &smi_addr, |
| 381 | &send_msg); |
| 382 | if (rv) { |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 383 | switch (poweroff_control) { |
| 384 | case IPMI_CHASSIS_POWER_CYCLE: |
| 385 | /* power cycle failed, default to power down */ |
| 386 | printk(KERN_ERR PFX "Unable to send chassis power " \ |
| 387 | "cycle message, IPMI error 0x%x\n", rv); |
| 388 | poweroff_control = IPMI_CHASSIS_POWER_DOWN; |
| 389 | goto powercyclefailed; |
| 390 | |
| 391 | case IPMI_CHASSIS_POWER_DOWN: |
| 392 | default: |
| 393 | printk(KERN_ERR PFX "Unable to send chassis power " \ |
| 394 | "down message, IPMI error 0x%x\n", rv); |
| 395 | break; |
| 396 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 397 | } |
| 398 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 399 | return; |
| 400 | } |
| 401 | |
| 402 | |
| 403 | /* Table of possible power off functions. */ |
| 404 | struct poweroff_function { |
| 405 | char *platform_type; |
| 406 | int (*detect)(ipmi_user_t user); |
| 407 | void (*poweroff_func)(ipmi_user_t user); |
| 408 | }; |
| 409 | |
| 410 | static struct poweroff_function poweroff_functions[] = { |
| 411 | { .platform_type = "ATCA", |
| 412 | .detect = ipmi_atca_detect, |
| 413 | .poweroff_func = ipmi_poweroff_atca }, |
| 414 | { .platform_type = "CPI1", |
| 415 | .detect = ipmi_cpi1_detect, |
| 416 | .poweroff_func = ipmi_poweroff_cpi1 }, |
| 417 | /* Chassis should generally be last, other things should override |
| 418 | it. */ |
| 419 | { .platform_type = "chassis", |
| 420 | .detect = ipmi_chassis_detect, |
| 421 | .poweroff_func = ipmi_poweroff_chassis }, |
| 422 | }; |
| 423 | #define NUM_PO_FUNCS (sizeof(poweroff_functions) \ |
| 424 | / sizeof(struct poweroff_function)) |
| 425 | |
| 426 | |
| 427 | /* Our local state. */ |
| 428 | static int ready = 0; |
| 429 | static ipmi_user_t ipmi_user; |
| 430 | static void (*specific_poweroff_func)(ipmi_user_t user) = NULL; |
| 431 | |
| 432 | /* Holds the old poweroff function so we can restore it on removal. */ |
| 433 | static void (*old_poweroff_func)(void); |
| 434 | |
| 435 | |
| 436 | /* Called on a powerdown request. */ |
| 437 | static void ipmi_poweroff_function (void) |
| 438 | { |
| 439 | if (!ready) |
| 440 | return; |
| 441 | |
| 442 | /* Use run-to-completion mode, since interrupts may be off. */ |
| 443 | ipmi_user_set_run_to_completion(ipmi_user, 1); |
| 444 | specific_poweroff_func(ipmi_user); |
| 445 | ipmi_user_set_run_to_completion(ipmi_user, 0); |
| 446 | } |
| 447 | |
| 448 | /* Wait for an IPMI interface to be installed, the first one installed |
| 449 | will be grabbed by this code and used to perform the powerdown. */ |
| 450 | static void ipmi_po_new_smi(int if_num) |
| 451 | { |
| 452 | struct ipmi_system_interface_addr smi_addr; |
| 453 | struct kernel_ipmi_msg send_msg; |
| 454 | int rv; |
| 455 | int i; |
| 456 | |
| 457 | if (ready) |
| 458 | return; |
| 459 | |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 460 | rv = ipmi_create_user(if_num, &ipmi_poweroff_handler, NULL, |
| 461 | &ipmi_user); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | if (rv) { |
| 463 | printk(KERN_ERR PFX "could not create IPMI user, error %d\n", |
| 464 | rv); |
| 465 | return; |
| 466 | } |
| 467 | |
| 468 | /* |
| 469 | * Do a get device ide and store some results, since this is |
| 470 | * used by several functions. |
| 471 | */ |
| 472 | smi_addr.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; |
| 473 | smi_addr.channel = IPMI_BMC_CHANNEL; |
| 474 | smi_addr.lun = 0; |
| 475 | |
| 476 | send_msg.netfn = IPMI_NETFN_APP_REQUEST; |
| 477 | send_msg.cmd = IPMI_GET_DEVICE_ID_CMD; |
| 478 | send_msg.data = NULL; |
| 479 | send_msg.data_len = 0; |
| 480 | rv = ipmi_request_wait_for_response(ipmi_user, |
| 481 | (struct ipmi_addr *) &smi_addr, |
| 482 | &send_msg); |
| 483 | if (rv) { |
| 484 | printk(KERN_ERR PFX "Unable to send IPMI get device id info," |
| 485 | " IPMI error 0x%x\n", rv); |
| 486 | goto out_err; |
| 487 | } |
| 488 | |
| 489 | if (halt_recv_msg.msg.data_len < 12) { |
| 490 | printk(KERN_ERR PFX "(chassis) IPMI get device id info too," |
| 491 | " short, was %d bytes, needed %d bytes\n", |
| 492 | halt_recv_msg.msg.data_len, 12); |
| 493 | goto out_err; |
| 494 | } |
| 495 | |
| 496 | mfg_id = (halt_recv_msg.msg.data[7] |
| 497 | | (halt_recv_msg.msg.data[8] << 8) |
| 498 | | (halt_recv_msg.msg.data[9] << 16)); |
| 499 | prod_id = (halt_recv_msg.msg.data[10] |
| 500 | | (halt_recv_msg.msg.data[11] << 8)); |
| 501 | capabilities = halt_recv_msg.msg.data[6]; |
| 502 | |
| 503 | |
| 504 | /* Scan for a poweroff method */ |
| 505 | for (i=0; i<NUM_PO_FUNCS; i++) { |
| 506 | if (poweroff_functions[i].detect(ipmi_user)) |
| 507 | goto found; |
| 508 | } |
| 509 | |
| 510 | out_err: |
| 511 | printk(KERN_ERR PFX "Unable to find a poweroff function that" |
| 512 | " will work, giving up\n"); |
| 513 | ipmi_destroy_user(ipmi_user); |
| 514 | return; |
| 515 | |
| 516 | found: |
| 517 | printk(KERN_INFO PFX "Found a %s style poweroff function\n", |
| 518 | poweroff_functions[i].platform_type); |
| 519 | specific_poweroff_func = poweroff_functions[i].poweroff_func; |
| 520 | old_poweroff_func = pm_power_off; |
| 521 | pm_power_off = ipmi_poweroff_function; |
| 522 | ready = 1; |
| 523 | } |
| 524 | |
| 525 | static void ipmi_po_smi_gone(int if_num) |
| 526 | { |
| 527 | /* This can never be called, because once poweroff driver is |
| 528 | registered, the interface can't go away until the power |
| 529 | driver is unregistered. */ |
| 530 | } |
| 531 | |
| 532 | static struct ipmi_smi_watcher smi_watcher = |
| 533 | { |
| 534 | .owner = THIS_MODULE, |
| 535 | .new_smi = ipmi_po_new_smi, |
| 536 | .smi_gone = ipmi_po_smi_gone |
| 537 | }; |
| 538 | |
| 539 | |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 540 | #ifdef CONFIG_PROC_FS |
| 541 | /* displays properties to proc */ |
| 542 | static int proc_read_chassctrl(char *page, char **start, off_t off, int count, |
| 543 | int *eof, void *data) |
| 544 | { |
| 545 | return sprintf(page, "%d\t[ 0=powerdown 2=powercycle ]\n", |
| 546 | poweroff_control); |
| 547 | } |
| 548 | |
| 549 | /* process property writes from proc */ |
| 550 | static int proc_write_chassctrl(struct file *file, const char *buffer, |
| 551 | unsigned long count, void *data) |
| 552 | { |
| 553 | int rv = count; |
| 554 | unsigned int newval = 0; |
| 555 | |
| 556 | sscanf(buffer, "%d", &newval); |
| 557 | switch (newval) { |
| 558 | case IPMI_CHASSIS_POWER_CYCLE: |
| 559 | printk(KERN_INFO PFX "power cycle is now enabled\n"); |
| 560 | poweroff_control = newval; |
| 561 | break; |
| 562 | |
| 563 | case IPMI_CHASSIS_POWER_DOWN: |
| 564 | poweroff_control = IPMI_CHASSIS_POWER_DOWN; |
| 565 | break; |
| 566 | |
| 567 | default: |
| 568 | rv = -EINVAL; |
| 569 | break; |
| 570 | } |
| 571 | |
| 572 | return rv; |
| 573 | } |
| 574 | #endif /* CONFIG_PROC_FS */ |
| 575 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 576 | /* |
| 577 | * Startup and shutdown functions. |
| 578 | */ |
| 579 | static int ipmi_poweroff_init (void) |
| 580 | { |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 581 | int rv; |
| 582 | struct proc_dir_entry *file; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 583 | |
| 584 | printk ("Copyright (C) 2004 MontaVista Software -" |
| 585 | " IPMI Powerdown via sys_reboot version " |
| 586 | IPMI_POWEROFF_VERSION ".\n"); |
| 587 | |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 588 | switch (poweroff_control) { |
| 589 | case IPMI_CHASSIS_POWER_CYCLE: |
| 590 | printk(KERN_INFO PFX "Power cycle is enabled.\n"); |
| 591 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 592 | |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 593 | case IPMI_CHASSIS_POWER_DOWN: |
| 594 | default: |
| 595 | poweroff_control = IPMI_CHASSIS_POWER_DOWN; |
| 596 | break; |
| 597 | } |
| 598 | |
| 599 | rv = ipmi_smi_watcher_register(&smi_watcher); |
| 600 | if (rv) { |
| 601 | printk(KERN_ERR PFX "Unable to register SMI watcher: %d\n", rv); |
| 602 | goto out_err; |
| 603 | } |
| 604 | |
| 605 | #ifdef CONFIG_PROC_FS |
| 606 | file = create_proc_entry("poweroff_control", 0, proc_ipmi_root); |
| 607 | if (!file) { |
| 608 | printk(KERN_ERR PFX "Unable to create proc power control\n"); |
| 609 | } else { |
| 610 | file->nlink = 1; |
| 611 | file->read_proc = proc_read_chassctrl; |
| 612 | file->write_proc = proc_write_chassctrl; |
| 613 | file->owner = THIS_MODULE; |
| 614 | } |
| 615 | #endif |
| 616 | |
| 617 | out_err: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 618 | return rv; |
| 619 | } |
| 620 | |
| 621 | #ifdef MODULE |
| 622 | static __exit void ipmi_poweroff_cleanup(void) |
| 623 | { |
| 624 | int rv; |
| 625 | |
Corey Minyard | 3b62594 | 2005-06-23 22:01:42 -0700 | [diff] [blame] | 626 | #ifdef CONFIG_PROC_FS |
| 627 | remove_proc_entry("poweroff_control", proc_ipmi_root); |
| 628 | #endif |
| 629 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 630 | ipmi_smi_watcher_unregister(&smi_watcher); |
| 631 | |
| 632 | if (ready) { |
| 633 | rv = ipmi_destroy_user(ipmi_user); |
| 634 | if (rv) |
| 635 | printk(KERN_ERR PFX "could not cleanup the IPMI" |
| 636 | " user: 0x%x\n", rv); |
| 637 | pm_power_off = old_poweroff_func; |
| 638 | } |
| 639 | } |
| 640 | module_exit(ipmi_poweroff_cleanup); |
| 641 | #endif |
| 642 | |
| 643 | module_init(ipmi_poweroff_init); |
| 644 | MODULE_LICENSE("GPL"); |