Darrick J. Wong | 8808a79 | 2008-05-23 13:04:25 -0700 | [diff] [blame] | 1 | /* |
Darrick J. Wong | eb93b7d | 2008-08-15 00:40:40 -0700 | [diff] [blame] | 2 | * A hwmon driver for the IBM System Director Active Energy Manager (AEM) |
| 3 | * temperature/power/energy sensors and capping functionality. |
Darrick J. Wong | 8808a79 | 2008-05-23 13:04:25 -0700 | [diff] [blame] | 4 | * Copyright (C) 2008 IBM |
| 5 | * |
| 6 | * Author: Darrick J. Wong <djwong@us.ibm.com> |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation; either version 2 of the License, or |
| 11 | * (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with this program; if not, write to the Free Software |
| 20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 21 | */ |
| 22 | |
Joe Perches | 55d705c | 2010-10-20 06:51:38 +0000 | [diff] [blame] | 23 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| 24 | |
Darrick J. Wong | 8808a79 | 2008-05-23 13:04:25 -0700 | [diff] [blame] | 25 | #include <linux/ipmi.h> |
| 26 | #include <linux/module.h> |
| 27 | #include <linux/hwmon.h> |
| 28 | #include <linux/hwmon-sysfs.h> |
| 29 | #include <linux/jiffies.h> |
| 30 | #include <linux/mutex.h> |
| 31 | #include <linux/kdev_t.h> |
| 32 | #include <linux/spinlock.h> |
| 33 | #include <linux/idr.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 34 | #include <linux/slab.h> |
Darrick J. Wong | 8808a79 | 2008-05-23 13:04:25 -0700 | [diff] [blame] | 35 | #include <linux/sched.h> |
| 36 | #include <linux/platform_device.h> |
| 37 | #include <linux/math64.h> |
| 38 | #include <linux/time.h> |
| 39 | |
| 40 | #define REFRESH_INTERVAL (HZ) |
| 41 | #define IPMI_TIMEOUT (30 * HZ) |
| 42 | #define DRVNAME "aem" |
| 43 | |
| 44 | #define AEM_NETFN 0x2E |
| 45 | |
| 46 | #define AEM_FIND_FW_CMD 0x80 |
| 47 | #define AEM_ELEMENT_CMD 0x81 |
| 48 | #define AEM_FW_INSTANCE_CMD 0x82 |
| 49 | |
| 50 | #define AEM_READ_ELEMENT_CFG 0x80 |
| 51 | #define AEM_READ_BUFFER 0x81 |
| 52 | #define AEM_READ_REGISTER 0x82 |
| 53 | #define AEM_WRITE_REGISTER 0x83 |
| 54 | #define AEM_SET_REG_MASK 0x84 |
| 55 | #define AEM_CLEAR_REG_MASK 0x85 |
| 56 | #define AEM_READ_ELEMENT_CFG2 0x86 |
| 57 | |
| 58 | #define AEM_CONTROL_ELEMENT 0 |
| 59 | #define AEM_ENERGY_ELEMENT 1 |
| 60 | #define AEM_CLOCK_ELEMENT 4 |
| 61 | #define AEM_POWER_CAP_ELEMENT 7 |
| 62 | #define AEM_EXHAUST_ELEMENT 9 |
| 63 | #define AEM_POWER_ELEMENT 10 |
| 64 | |
| 65 | #define AEM_MODULE_TYPE_ID 0x0001 |
| 66 | |
| 67 | #define AEM2_NUM_ENERGY_REGS 2 |
| 68 | #define AEM2_NUM_PCAP_REGS 6 |
| 69 | #define AEM2_NUM_TEMP_REGS 2 |
| 70 | #define AEM2_NUM_SENSORS 14 |
| 71 | |
| 72 | #define AEM1_NUM_ENERGY_REGS 1 |
| 73 | #define AEM1_NUM_SENSORS 3 |
| 74 | |
| 75 | /* AEM 2.x has more energy registers */ |
| 76 | #define AEM_NUM_ENERGY_REGS AEM2_NUM_ENERGY_REGS |
| 77 | /* AEM 2.x needs more sensor files */ |
| 78 | #define AEM_NUM_SENSORS AEM2_NUM_SENSORS |
| 79 | |
| 80 | #define POWER_CAP 0 |
| 81 | #define POWER_CAP_MAX_HOTPLUG 1 |
| 82 | #define POWER_CAP_MAX 2 |
| 83 | #define POWER_CAP_MIN_WARNING 3 |
| 84 | #define POWER_CAP_MIN 4 |
| 85 | #define POWER_AUX 5 |
| 86 | |
| 87 | #define AEM_DEFAULT_POWER_INTERVAL 1000 |
| 88 | #define AEM_MIN_POWER_INTERVAL 200 |
| 89 | #define UJ_PER_MJ 1000L |
| 90 | |
| 91 | static DEFINE_IDR(aem_idr); |
| 92 | static DEFINE_SPINLOCK(aem_idr_lock); |
| 93 | |
Darrick J. Wong | fe2d5ff | 2008-11-12 13:25:00 -0800 | [diff] [blame] | 94 | static struct platform_driver aem_driver = { |
| 95 | .driver = { |
| 96 | .name = DRVNAME, |
| 97 | .bus = &platform_bus_type, |
| 98 | } |
Darrick J. Wong | 8808a79 | 2008-05-23 13:04:25 -0700 | [diff] [blame] | 99 | }; |
| 100 | |
| 101 | struct aem_ipmi_data { |
| 102 | struct completion read_complete; |
| 103 | struct ipmi_addr address; |
| 104 | ipmi_user_t user; |
| 105 | int interface; |
| 106 | |
| 107 | struct kernel_ipmi_msg tx_message; |
| 108 | long tx_msgid; |
| 109 | |
| 110 | void *rx_msg_data; |
| 111 | unsigned short rx_msg_len; |
| 112 | unsigned char rx_result; |
| 113 | int rx_recv_type; |
| 114 | |
| 115 | struct device *bmc_device; |
| 116 | }; |
| 117 | |
| 118 | struct aem_ro_sensor_template { |
| 119 | char *label; |
| 120 | ssize_t (*show)(struct device *dev, |
| 121 | struct device_attribute *devattr, |
| 122 | char *buf); |
| 123 | int index; |
| 124 | }; |
| 125 | |
| 126 | struct aem_rw_sensor_template { |
| 127 | char *label; |
| 128 | ssize_t (*show)(struct device *dev, |
| 129 | struct device_attribute *devattr, |
| 130 | char *buf); |
| 131 | ssize_t (*set)(struct device *dev, |
| 132 | struct device_attribute *devattr, |
| 133 | const char *buf, size_t count); |
| 134 | int index; |
| 135 | }; |
| 136 | |
| 137 | struct aem_data { |
| 138 | struct list_head list; |
| 139 | |
| 140 | struct device *hwmon_dev; |
| 141 | struct platform_device *pdev; |
| 142 | struct mutex lock; |
| 143 | char valid; |
| 144 | unsigned long last_updated; /* In jiffies */ |
| 145 | u8 ver_major; |
| 146 | u8 ver_minor; |
| 147 | u8 module_handle; |
| 148 | int id; |
| 149 | struct aem_ipmi_data ipmi; |
| 150 | |
| 151 | /* Function to update sensors */ |
| 152 | void (*update)(struct aem_data *data); |
| 153 | |
| 154 | /* |
| 155 | * AEM 1.x sensors: |
| 156 | * Available sensors: |
| 157 | * Energy meter |
| 158 | * Power meter |
| 159 | * |
| 160 | * AEM 2.x sensors: |
| 161 | * Two energy meters |
| 162 | * Two power meters |
| 163 | * Two temperature sensors |
| 164 | * Six power cap registers |
| 165 | */ |
| 166 | |
| 167 | /* sysfs attrs */ |
| 168 | struct sensor_device_attribute sensors[AEM_NUM_SENSORS]; |
| 169 | |
| 170 | /* energy use in mJ */ |
| 171 | u64 energy[AEM_NUM_ENERGY_REGS]; |
| 172 | |
| 173 | /* power sampling interval in ms */ |
| 174 | unsigned long power_period[AEM_NUM_ENERGY_REGS]; |
| 175 | |
| 176 | /* Everything past here is for AEM2 only */ |
| 177 | |
| 178 | /* power caps in dW */ |
| 179 | u16 pcap[AEM2_NUM_PCAP_REGS]; |
| 180 | |
| 181 | /* exhaust temperature in C */ |
| 182 | u8 temp[AEM2_NUM_TEMP_REGS]; |
| 183 | }; |
| 184 | |
| 185 | /* Data structures returned by the AEM firmware */ |
| 186 | struct aem_iana_id { |
| 187 | u8 bytes[3]; |
| 188 | }; |
| 189 | static struct aem_iana_id system_x_id = { |
| 190 | .bytes = {0x4D, 0x4F, 0x00} |
| 191 | }; |
| 192 | |
| 193 | /* These are used to find AEM1 instances */ |
| 194 | struct aem_find_firmware_req { |
| 195 | struct aem_iana_id id; |
| 196 | u8 rsvd; |
Al Viro | a064d5b | 2008-06-02 10:59:02 +0100 | [diff] [blame] | 197 | __be16 index; |
| 198 | __be16 module_type_id; |
Darrick J. Wong | 8808a79 | 2008-05-23 13:04:25 -0700 | [diff] [blame] | 199 | } __packed; |
| 200 | |
| 201 | struct aem_find_firmware_resp { |
| 202 | struct aem_iana_id id; |
| 203 | u8 num_instances; |
| 204 | } __packed; |
| 205 | |
| 206 | /* These are used to find AEM2 instances */ |
| 207 | struct aem_find_instance_req { |
| 208 | struct aem_iana_id id; |
| 209 | u8 instance_number; |
Al Viro | a064d5b | 2008-06-02 10:59:02 +0100 | [diff] [blame] | 210 | __be16 module_type_id; |
Darrick J. Wong | 8808a79 | 2008-05-23 13:04:25 -0700 | [diff] [blame] | 211 | } __packed; |
| 212 | |
| 213 | struct aem_find_instance_resp { |
| 214 | struct aem_iana_id id; |
| 215 | u8 num_instances; |
| 216 | u8 major; |
| 217 | u8 minor; |
| 218 | u8 module_handle; |
| 219 | u16 record_id; |
| 220 | } __packed; |
| 221 | |
| 222 | /* These are used to query sensors */ |
| 223 | struct aem_read_sensor_req { |
| 224 | struct aem_iana_id id; |
| 225 | u8 module_handle; |
| 226 | u8 element; |
| 227 | u8 subcommand; |
| 228 | u8 reg; |
| 229 | u8 rx_buf_size; |
| 230 | } __packed; |
| 231 | |
| 232 | struct aem_read_sensor_resp { |
| 233 | struct aem_iana_id id; |
| 234 | u8 bytes[0]; |
| 235 | } __packed; |
| 236 | |
| 237 | /* Data structures to talk to the IPMI layer */ |
| 238 | struct aem_driver_data { |
| 239 | struct list_head aem_devices; |
| 240 | struct ipmi_smi_watcher bmc_events; |
| 241 | struct ipmi_user_hndl ipmi_hndlrs; |
| 242 | }; |
| 243 | |
| 244 | static void aem_register_bmc(int iface, struct device *dev); |
| 245 | static void aem_bmc_gone(int iface); |
| 246 | static void aem_msg_handler(struct ipmi_recv_msg *msg, void *user_msg_data); |
| 247 | |
| 248 | static void aem_remove_sensors(struct aem_data *data); |
| 249 | static int aem_init_aem1(struct aem_ipmi_data *probe); |
| 250 | static int aem_init_aem2(struct aem_ipmi_data *probe); |
| 251 | static int aem1_find_sensors(struct aem_data *data); |
| 252 | static int aem2_find_sensors(struct aem_data *data); |
| 253 | static void update_aem1_sensors(struct aem_data *data); |
| 254 | static void update_aem2_sensors(struct aem_data *data); |
| 255 | |
| 256 | static struct aem_driver_data driver_data = { |
| 257 | .aem_devices = LIST_HEAD_INIT(driver_data.aem_devices), |
| 258 | .bmc_events = { |
| 259 | .owner = THIS_MODULE, |
| 260 | .new_smi = aem_register_bmc, |
| 261 | .smi_gone = aem_bmc_gone, |
| 262 | }, |
| 263 | .ipmi_hndlrs = { |
| 264 | .ipmi_recv_hndl = aem_msg_handler, |
| 265 | }, |
| 266 | }; |
| 267 | |
| 268 | /* Functions to talk to the IPMI layer */ |
| 269 | |
| 270 | /* Initialize IPMI address, message buffers and user data */ |
| 271 | static int aem_init_ipmi_data(struct aem_ipmi_data *data, int iface, |
| 272 | struct device *bmc) |
| 273 | { |
| 274 | int err; |
| 275 | |
| 276 | init_completion(&data->read_complete); |
| 277 | data->bmc_device = bmc; |
| 278 | |
| 279 | /* Initialize IPMI address */ |
| 280 | data->address.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; |
| 281 | data->address.channel = IPMI_BMC_CHANNEL; |
| 282 | data->address.data[0] = 0; |
| 283 | data->interface = iface; |
| 284 | |
| 285 | /* Initialize message buffers */ |
| 286 | data->tx_msgid = 0; |
| 287 | data->tx_message.netfn = AEM_NETFN; |
| 288 | |
| 289 | /* Create IPMI messaging interface user */ |
| 290 | err = ipmi_create_user(data->interface, &driver_data.ipmi_hndlrs, |
| 291 | data, &data->user); |
| 292 | if (err < 0) { |
| 293 | dev_err(bmc, "Unable to register user with IPMI " |
| 294 | "interface %d\n", data->interface); |
| 295 | return -EACCES; |
| 296 | } |
| 297 | |
| 298 | return 0; |
| 299 | } |
| 300 | |
| 301 | /* Send an IPMI command */ |
| 302 | static int aem_send_message(struct aem_ipmi_data *data) |
| 303 | { |
| 304 | int err; |
| 305 | |
| 306 | err = ipmi_validate_addr(&data->address, sizeof(data->address)); |
| 307 | if (err) |
| 308 | goto out; |
| 309 | |
| 310 | data->tx_msgid++; |
| 311 | err = ipmi_request_settime(data->user, &data->address, data->tx_msgid, |
| 312 | &data->tx_message, data, 0, 0, 0); |
| 313 | if (err) |
| 314 | goto out1; |
| 315 | |
| 316 | return 0; |
| 317 | out1: |
| 318 | dev_err(data->bmc_device, "request_settime=%x\n", err); |
| 319 | return err; |
| 320 | out: |
| 321 | dev_err(data->bmc_device, "validate_addr=%x\n", err); |
| 322 | return err; |
| 323 | } |
| 324 | |
| 325 | /* Dispatch IPMI messages to callers */ |
| 326 | static void aem_msg_handler(struct ipmi_recv_msg *msg, void *user_msg_data) |
| 327 | { |
| 328 | unsigned short rx_len; |
| 329 | struct aem_ipmi_data *data = user_msg_data; |
| 330 | |
| 331 | if (msg->msgid != data->tx_msgid) { |
| 332 | dev_err(data->bmc_device, "Mismatch between received msgid " |
| 333 | "(%02x) and transmitted msgid (%02x)!\n", |
| 334 | (int)msg->msgid, |
| 335 | (int)data->tx_msgid); |
| 336 | ipmi_free_recv_msg(msg); |
| 337 | return; |
| 338 | } |
| 339 | |
| 340 | data->rx_recv_type = msg->recv_type; |
| 341 | if (msg->msg.data_len > 0) |
| 342 | data->rx_result = msg->msg.data[0]; |
| 343 | else |
| 344 | data->rx_result = IPMI_UNKNOWN_ERR_COMPLETION_CODE; |
| 345 | |
| 346 | if (msg->msg.data_len > 1) { |
| 347 | rx_len = msg->msg.data_len - 1; |
| 348 | if (data->rx_msg_len < rx_len) |
| 349 | rx_len = data->rx_msg_len; |
| 350 | data->rx_msg_len = rx_len; |
| 351 | memcpy(data->rx_msg_data, msg->msg.data + 1, data->rx_msg_len); |
| 352 | } else |
| 353 | data->rx_msg_len = 0; |
| 354 | |
| 355 | ipmi_free_recv_msg(msg); |
| 356 | complete(&data->read_complete); |
| 357 | } |
| 358 | |
| 359 | /* ID functions */ |
| 360 | |
| 361 | /* Obtain an id */ |
| 362 | static int aem_idr_get(int *id) |
| 363 | { |
| 364 | int i, err; |
| 365 | |
| 366 | again: |
| 367 | if (unlikely(!idr_pre_get(&aem_idr, GFP_KERNEL))) |
| 368 | return -ENOMEM; |
| 369 | |
| 370 | spin_lock(&aem_idr_lock); |
| 371 | err = idr_get_new(&aem_idr, NULL, &i); |
| 372 | spin_unlock(&aem_idr_lock); |
| 373 | |
| 374 | if (unlikely(err == -EAGAIN)) |
| 375 | goto again; |
| 376 | else if (unlikely(err)) |
| 377 | return err; |
| 378 | |
| 379 | *id = i & MAX_ID_MASK; |
| 380 | return 0; |
| 381 | } |
| 382 | |
| 383 | /* Release an object ID */ |
| 384 | static void aem_idr_put(int id) |
| 385 | { |
| 386 | spin_lock(&aem_idr_lock); |
| 387 | idr_remove(&aem_idr, id); |
| 388 | spin_unlock(&aem_idr_lock); |
| 389 | } |
| 390 | |
| 391 | /* Sensor support functions */ |
| 392 | |
| 393 | /* Read a sensor value */ |
| 394 | static int aem_read_sensor(struct aem_data *data, u8 elt, u8 reg, |
| 395 | void *buf, size_t size) |
| 396 | { |
| 397 | int rs_size, res; |
| 398 | struct aem_read_sensor_req rs_req; |
| 399 | struct aem_read_sensor_resp *rs_resp; |
| 400 | struct aem_ipmi_data *ipmi = &data->ipmi; |
| 401 | |
| 402 | /* AEM registers are 1, 2, 4 or 8 bytes */ |
| 403 | switch (size) { |
| 404 | case 1: |
| 405 | case 2: |
| 406 | case 4: |
| 407 | case 8: |
| 408 | break; |
| 409 | default: |
| 410 | return -EINVAL; |
| 411 | } |
| 412 | |
| 413 | rs_req.id = system_x_id; |
| 414 | rs_req.module_handle = data->module_handle; |
| 415 | rs_req.element = elt; |
| 416 | rs_req.subcommand = AEM_READ_REGISTER; |
| 417 | rs_req.reg = reg; |
| 418 | rs_req.rx_buf_size = size; |
| 419 | |
| 420 | ipmi->tx_message.cmd = AEM_ELEMENT_CMD; |
| 421 | ipmi->tx_message.data = (char *)&rs_req; |
| 422 | ipmi->tx_message.data_len = sizeof(rs_req); |
| 423 | |
| 424 | rs_size = sizeof(*rs_resp) + size; |
| 425 | rs_resp = kzalloc(rs_size, GFP_KERNEL); |
| 426 | if (!rs_resp) |
| 427 | return -ENOMEM; |
| 428 | |
| 429 | ipmi->rx_msg_data = rs_resp; |
| 430 | ipmi->rx_msg_len = rs_size; |
| 431 | |
| 432 | aem_send_message(ipmi); |
| 433 | |
| 434 | res = wait_for_completion_timeout(&ipmi->read_complete, IPMI_TIMEOUT); |
| 435 | if (!res) |
| 436 | return -ETIMEDOUT; |
| 437 | |
| 438 | if (ipmi->rx_result || ipmi->rx_msg_len != rs_size || |
| 439 | memcmp(&rs_resp->id, &system_x_id, sizeof(system_x_id))) { |
| 440 | kfree(rs_resp); |
| 441 | return -ENOENT; |
| 442 | } |
| 443 | |
| 444 | switch (size) { |
| 445 | case 1: { |
| 446 | u8 *x = buf; |
| 447 | *x = rs_resp->bytes[0]; |
| 448 | break; |
| 449 | } |
| 450 | case 2: { |
| 451 | u16 *x = buf; |
Al Viro | a064d5b | 2008-06-02 10:59:02 +0100 | [diff] [blame] | 452 | *x = be16_to_cpup((__be16 *)rs_resp->bytes); |
Darrick J. Wong | 8808a79 | 2008-05-23 13:04:25 -0700 | [diff] [blame] | 453 | break; |
| 454 | } |
| 455 | case 4: { |
| 456 | u32 *x = buf; |
Al Viro | a064d5b | 2008-06-02 10:59:02 +0100 | [diff] [blame] | 457 | *x = be32_to_cpup((__be32 *)rs_resp->bytes); |
Darrick J. Wong | 8808a79 | 2008-05-23 13:04:25 -0700 | [diff] [blame] | 458 | break; |
| 459 | } |
| 460 | case 8: { |
| 461 | u64 *x = buf; |
Al Viro | a064d5b | 2008-06-02 10:59:02 +0100 | [diff] [blame] | 462 | *x = be64_to_cpup((__be64 *)rs_resp->bytes); |
Darrick J. Wong | 8808a79 | 2008-05-23 13:04:25 -0700 | [diff] [blame] | 463 | break; |
| 464 | } |
| 465 | } |
| 466 | |
| 467 | return 0; |
| 468 | } |
| 469 | |
| 470 | /* Update AEM energy registers */ |
Darrick J. Wong | bb15e7f | 2008-08-15 00:40:41 -0700 | [diff] [blame] | 471 | static void update_aem_energy_one(struct aem_data *data, int which) |
| 472 | { |
| 473 | aem_read_sensor(data, AEM_ENERGY_ELEMENT, which, |
| 474 | &data->energy[which], 8); |
| 475 | } |
| 476 | |
Darrick J. Wong | 8808a79 | 2008-05-23 13:04:25 -0700 | [diff] [blame] | 477 | static void update_aem_energy(struct aem_data *data) |
| 478 | { |
Darrick J. Wong | bb15e7f | 2008-08-15 00:40:41 -0700 | [diff] [blame] | 479 | update_aem_energy_one(data, 0); |
Darrick J. Wong | 8808a79 | 2008-05-23 13:04:25 -0700 | [diff] [blame] | 480 | if (data->ver_major < 2) |
| 481 | return; |
Darrick J. Wong | bb15e7f | 2008-08-15 00:40:41 -0700 | [diff] [blame] | 482 | update_aem_energy_one(data, 1); |
Darrick J. Wong | 8808a79 | 2008-05-23 13:04:25 -0700 | [diff] [blame] | 483 | } |
| 484 | |
| 485 | /* Update all AEM1 sensors */ |
| 486 | static void update_aem1_sensors(struct aem_data *data) |
| 487 | { |
| 488 | mutex_lock(&data->lock); |
| 489 | if (time_before(jiffies, data->last_updated + REFRESH_INTERVAL) && |
| 490 | data->valid) |
| 491 | goto out; |
| 492 | |
| 493 | update_aem_energy(data); |
| 494 | out: |
| 495 | mutex_unlock(&data->lock); |
| 496 | } |
| 497 | |
| 498 | /* Update all AEM2 sensors */ |
| 499 | static void update_aem2_sensors(struct aem_data *data) |
| 500 | { |
| 501 | int i; |
| 502 | |
| 503 | mutex_lock(&data->lock); |
| 504 | if (time_before(jiffies, data->last_updated + REFRESH_INTERVAL) && |
| 505 | data->valid) |
| 506 | goto out; |
| 507 | |
| 508 | update_aem_energy(data); |
| 509 | aem_read_sensor(data, AEM_EXHAUST_ELEMENT, 0, &data->temp[0], 1); |
| 510 | aem_read_sensor(data, AEM_EXHAUST_ELEMENT, 1, &data->temp[1], 1); |
| 511 | |
| 512 | for (i = POWER_CAP; i <= POWER_AUX; i++) |
| 513 | aem_read_sensor(data, AEM_POWER_CAP_ELEMENT, i, |
| 514 | &data->pcap[i], 2); |
| 515 | out: |
| 516 | mutex_unlock(&data->lock); |
| 517 | } |
| 518 | |
| 519 | /* Delete an AEM instance */ |
| 520 | static void aem_delete(struct aem_data *data) |
| 521 | { |
| 522 | list_del(&data->list); |
| 523 | aem_remove_sensors(data); |
| 524 | hwmon_device_unregister(data->hwmon_dev); |
| 525 | ipmi_destroy_user(data->ipmi.user); |
| 526 | dev_set_drvdata(&data->pdev->dev, NULL); |
| 527 | platform_device_unregister(data->pdev); |
| 528 | aem_idr_put(data->id); |
| 529 | kfree(data); |
| 530 | } |
| 531 | |
| 532 | /* Probe functions for AEM1 devices */ |
| 533 | |
| 534 | /* Retrieve version and module handle for an AEM1 instance */ |
| 535 | static int aem_find_aem1_count(struct aem_ipmi_data *data) |
| 536 | { |
| 537 | int res; |
| 538 | struct aem_find_firmware_req ff_req; |
| 539 | struct aem_find_firmware_resp ff_resp; |
| 540 | |
| 541 | ff_req.id = system_x_id; |
| 542 | ff_req.index = 0; |
| 543 | ff_req.module_type_id = cpu_to_be16(AEM_MODULE_TYPE_ID); |
| 544 | |
| 545 | data->tx_message.cmd = AEM_FIND_FW_CMD; |
| 546 | data->tx_message.data = (char *)&ff_req; |
| 547 | data->tx_message.data_len = sizeof(ff_req); |
| 548 | |
| 549 | data->rx_msg_data = &ff_resp; |
| 550 | data->rx_msg_len = sizeof(ff_resp); |
| 551 | |
| 552 | aem_send_message(data); |
| 553 | |
| 554 | res = wait_for_completion_timeout(&data->read_complete, IPMI_TIMEOUT); |
| 555 | if (!res) |
| 556 | return -ETIMEDOUT; |
| 557 | |
| 558 | if (data->rx_result || data->rx_msg_len != sizeof(ff_resp) || |
| 559 | memcmp(&ff_resp.id, &system_x_id, sizeof(system_x_id))) |
| 560 | return -ENOENT; |
| 561 | |
| 562 | return ff_resp.num_instances; |
| 563 | } |
| 564 | |
| 565 | /* Find and initialize one AEM1 instance */ |
| 566 | static int aem_init_aem1_inst(struct aem_ipmi_data *probe, u8 module_handle) |
| 567 | { |
| 568 | struct aem_data *data; |
| 569 | int i; |
| 570 | int res = -ENOMEM; |
| 571 | |
| 572 | data = kzalloc(sizeof(*data), GFP_KERNEL); |
| 573 | if (!data) |
| 574 | return res; |
| 575 | mutex_init(&data->lock); |
| 576 | |
| 577 | /* Copy instance data */ |
| 578 | data->ver_major = 1; |
| 579 | data->ver_minor = 0; |
| 580 | data->module_handle = module_handle; |
| 581 | for (i = 0; i < AEM1_NUM_ENERGY_REGS; i++) |
| 582 | data->power_period[i] = AEM_DEFAULT_POWER_INTERVAL; |
| 583 | |
| 584 | /* Create sub-device for this fw instance */ |
| 585 | if (aem_idr_get(&data->id)) |
| 586 | goto id_err; |
| 587 | |
| 588 | data->pdev = platform_device_alloc(DRVNAME, data->id); |
| 589 | if (!data->pdev) |
| 590 | goto dev_err; |
Darrick J. Wong | fe2d5ff | 2008-11-12 13:25:00 -0800 | [diff] [blame] | 591 | data->pdev->dev.driver = &aem_driver.driver; |
Darrick J. Wong | 8808a79 | 2008-05-23 13:04:25 -0700 | [diff] [blame] | 592 | |
| 593 | res = platform_device_add(data->pdev); |
| 594 | if (res) |
| 595 | goto ipmi_err; |
| 596 | |
| 597 | dev_set_drvdata(&data->pdev->dev, data); |
| 598 | |
| 599 | /* Set up IPMI interface */ |
| 600 | if (aem_init_ipmi_data(&data->ipmi, probe->interface, |
| 601 | probe->bmc_device)) |
| 602 | goto ipmi_err; |
| 603 | |
| 604 | /* Register with hwmon */ |
| 605 | data->hwmon_dev = hwmon_device_register(&data->pdev->dev); |
| 606 | |
| 607 | if (IS_ERR(data->hwmon_dev)) { |
| 608 | dev_err(&data->pdev->dev, "Unable to register hwmon " |
| 609 | "device for IPMI interface %d\n", |
| 610 | probe->interface); |
| 611 | goto hwmon_reg_err; |
| 612 | } |
| 613 | |
| 614 | data->update = update_aem1_sensors; |
| 615 | |
| 616 | /* Find sensors */ |
| 617 | if (aem1_find_sensors(data)) |
| 618 | goto sensor_err; |
| 619 | |
| 620 | /* Add to our list of AEM devices */ |
| 621 | list_add_tail(&data->list, &driver_data.aem_devices); |
| 622 | |
| 623 | dev_info(data->ipmi.bmc_device, "Found AEM v%d.%d at 0x%X\n", |
| 624 | data->ver_major, data->ver_minor, |
| 625 | data->module_handle); |
| 626 | return 0; |
| 627 | |
| 628 | sensor_err: |
| 629 | hwmon_device_unregister(data->hwmon_dev); |
| 630 | hwmon_reg_err: |
| 631 | ipmi_destroy_user(data->ipmi.user); |
| 632 | ipmi_err: |
| 633 | dev_set_drvdata(&data->pdev->dev, NULL); |
| 634 | platform_device_unregister(data->pdev); |
| 635 | dev_err: |
| 636 | aem_idr_put(data->id); |
| 637 | id_err: |
| 638 | kfree(data); |
| 639 | |
| 640 | return res; |
| 641 | } |
| 642 | |
| 643 | /* Find and initialize all AEM1 instances */ |
| 644 | static int aem_init_aem1(struct aem_ipmi_data *probe) |
| 645 | { |
| 646 | int num, i, err; |
| 647 | |
| 648 | num = aem_find_aem1_count(probe); |
| 649 | for (i = 0; i < num; i++) { |
| 650 | err = aem_init_aem1_inst(probe, i); |
| 651 | if (err) { |
| 652 | dev_err(probe->bmc_device, |
| 653 | "Error %d initializing AEM1 0x%X\n", |
| 654 | err, i); |
| 655 | return err; |
| 656 | } |
| 657 | } |
| 658 | |
| 659 | return 0; |
| 660 | } |
| 661 | |
| 662 | /* Probe functions for AEM2 devices */ |
| 663 | |
| 664 | /* Retrieve version and module handle for an AEM2 instance */ |
| 665 | static int aem_find_aem2(struct aem_ipmi_data *data, |
| 666 | struct aem_find_instance_resp *fi_resp, |
| 667 | int instance_num) |
| 668 | { |
| 669 | int res; |
| 670 | struct aem_find_instance_req fi_req; |
| 671 | |
| 672 | fi_req.id = system_x_id; |
| 673 | fi_req.instance_number = instance_num; |
| 674 | fi_req.module_type_id = cpu_to_be16(AEM_MODULE_TYPE_ID); |
| 675 | |
| 676 | data->tx_message.cmd = AEM_FW_INSTANCE_CMD; |
| 677 | data->tx_message.data = (char *)&fi_req; |
| 678 | data->tx_message.data_len = sizeof(fi_req); |
| 679 | |
| 680 | data->rx_msg_data = fi_resp; |
| 681 | data->rx_msg_len = sizeof(*fi_resp); |
| 682 | |
| 683 | aem_send_message(data); |
| 684 | |
| 685 | res = wait_for_completion_timeout(&data->read_complete, IPMI_TIMEOUT); |
| 686 | if (!res) |
| 687 | return -ETIMEDOUT; |
| 688 | |
| 689 | if (data->rx_result || data->rx_msg_len != sizeof(*fi_resp) || |
Darrick J. Wong | 9c5413e | 2008-08-15 00:40:40 -0700 | [diff] [blame] | 690 | memcmp(&fi_resp->id, &system_x_id, sizeof(system_x_id)) || |
| 691 | fi_resp->num_instances <= instance_num) |
Darrick J. Wong | 8808a79 | 2008-05-23 13:04:25 -0700 | [diff] [blame] | 692 | return -ENOENT; |
| 693 | |
| 694 | return 0; |
| 695 | } |
| 696 | |
| 697 | /* Find and initialize one AEM2 instance */ |
| 698 | static int aem_init_aem2_inst(struct aem_ipmi_data *probe, |
| 699 | struct aem_find_instance_resp *fi_resp) |
| 700 | { |
| 701 | struct aem_data *data; |
| 702 | int i; |
| 703 | int res = -ENOMEM; |
| 704 | |
| 705 | data = kzalloc(sizeof(*data), GFP_KERNEL); |
| 706 | if (!data) |
| 707 | return res; |
| 708 | mutex_init(&data->lock); |
| 709 | |
| 710 | /* Copy instance data */ |
| 711 | data->ver_major = fi_resp->major; |
| 712 | data->ver_minor = fi_resp->minor; |
| 713 | data->module_handle = fi_resp->module_handle; |
| 714 | for (i = 0; i < AEM2_NUM_ENERGY_REGS; i++) |
| 715 | data->power_period[i] = AEM_DEFAULT_POWER_INTERVAL; |
| 716 | |
| 717 | /* Create sub-device for this fw instance */ |
| 718 | if (aem_idr_get(&data->id)) |
| 719 | goto id_err; |
| 720 | |
| 721 | data->pdev = platform_device_alloc(DRVNAME, data->id); |
| 722 | if (!data->pdev) |
| 723 | goto dev_err; |
Darrick J. Wong | fe2d5ff | 2008-11-12 13:25:00 -0800 | [diff] [blame] | 724 | data->pdev->dev.driver = &aem_driver.driver; |
Darrick J. Wong | 8808a79 | 2008-05-23 13:04:25 -0700 | [diff] [blame] | 725 | |
| 726 | res = platform_device_add(data->pdev); |
| 727 | if (res) |
| 728 | goto ipmi_err; |
| 729 | |
| 730 | dev_set_drvdata(&data->pdev->dev, data); |
| 731 | |
| 732 | /* Set up IPMI interface */ |
| 733 | if (aem_init_ipmi_data(&data->ipmi, probe->interface, |
| 734 | probe->bmc_device)) |
| 735 | goto ipmi_err; |
| 736 | |
| 737 | /* Register with hwmon */ |
| 738 | data->hwmon_dev = hwmon_device_register(&data->pdev->dev); |
| 739 | |
| 740 | if (IS_ERR(data->hwmon_dev)) { |
| 741 | dev_err(&data->pdev->dev, "Unable to register hwmon " |
| 742 | "device for IPMI interface %d\n", |
| 743 | probe->interface); |
| 744 | goto hwmon_reg_err; |
| 745 | } |
| 746 | |
| 747 | data->update = update_aem2_sensors; |
| 748 | |
| 749 | /* Find sensors */ |
| 750 | if (aem2_find_sensors(data)) |
| 751 | goto sensor_err; |
| 752 | |
| 753 | /* Add to our list of AEM devices */ |
| 754 | list_add_tail(&data->list, &driver_data.aem_devices); |
| 755 | |
| 756 | dev_info(data->ipmi.bmc_device, "Found AEM v%d.%d at 0x%X\n", |
| 757 | data->ver_major, data->ver_minor, |
| 758 | data->module_handle); |
| 759 | return 0; |
| 760 | |
| 761 | sensor_err: |
| 762 | hwmon_device_unregister(data->hwmon_dev); |
| 763 | hwmon_reg_err: |
| 764 | ipmi_destroy_user(data->ipmi.user); |
| 765 | ipmi_err: |
| 766 | dev_set_drvdata(&data->pdev->dev, NULL); |
| 767 | platform_device_unregister(data->pdev); |
| 768 | dev_err: |
| 769 | aem_idr_put(data->id); |
| 770 | id_err: |
| 771 | kfree(data); |
| 772 | |
| 773 | return res; |
| 774 | } |
| 775 | |
| 776 | /* Find and initialize all AEM2 instances */ |
| 777 | static int aem_init_aem2(struct aem_ipmi_data *probe) |
| 778 | { |
| 779 | struct aem_find_instance_resp fi_resp; |
| 780 | int err; |
| 781 | int i = 0; |
| 782 | |
| 783 | while (!aem_find_aem2(probe, &fi_resp, i)) { |
| 784 | if (fi_resp.major != 2) { |
| 785 | dev_err(probe->bmc_device, "Unknown AEM v%d; please " |
| 786 | "report this to the maintainer.\n", |
| 787 | fi_resp.major); |
| 788 | i++; |
| 789 | continue; |
| 790 | } |
| 791 | err = aem_init_aem2_inst(probe, &fi_resp); |
| 792 | if (err) { |
| 793 | dev_err(probe->bmc_device, |
| 794 | "Error %d initializing AEM2 0x%X\n", |
| 795 | err, fi_resp.module_handle); |
| 796 | return err; |
| 797 | } |
| 798 | i++; |
| 799 | } |
| 800 | |
| 801 | return 0; |
| 802 | } |
| 803 | |
| 804 | /* Probe a BMC for AEM firmware instances */ |
| 805 | static void aem_register_bmc(int iface, struct device *dev) |
| 806 | { |
| 807 | struct aem_ipmi_data probe; |
| 808 | |
| 809 | if (aem_init_ipmi_data(&probe, iface, dev)) |
| 810 | return; |
| 811 | |
| 812 | /* Ignore probe errors; they won't cause problems */ |
| 813 | aem_init_aem1(&probe); |
| 814 | aem_init_aem2(&probe); |
| 815 | |
| 816 | ipmi_destroy_user(probe.user); |
| 817 | } |
| 818 | |
| 819 | /* Handle BMC deletion */ |
| 820 | static void aem_bmc_gone(int iface) |
| 821 | { |
| 822 | struct aem_data *p1, *next1; |
| 823 | |
| 824 | list_for_each_entry_safe(p1, next1, &driver_data.aem_devices, list) |
| 825 | if (p1->ipmi.interface == iface) |
| 826 | aem_delete(p1); |
| 827 | } |
| 828 | |
| 829 | /* sysfs support functions */ |
| 830 | |
| 831 | /* AEM device name */ |
| 832 | static ssize_t show_name(struct device *dev, struct device_attribute *devattr, |
| 833 | char *buf) |
| 834 | { |
| 835 | struct aem_data *data = dev_get_drvdata(dev); |
| 836 | |
| 837 | return sprintf(buf, "%s%d\n", DRVNAME, data->ver_major); |
| 838 | } |
| 839 | static SENSOR_DEVICE_ATTR(name, S_IRUGO, show_name, NULL, 0); |
| 840 | |
| 841 | /* AEM device version */ |
| 842 | static ssize_t show_version(struct device *dev, |
| 843 | struct device_attribute *devattr, |
| 844 | char *buf) |
| 845 | { |
| 846 | struct aem_data *data = dev_get_drvdata(dev); |
| 847 | |
| 848 | return sprintf(buf, "%d.%d\n", data->ver_major, data->ver_minor); |
| 849 | } |
| 850 | static SENSOR_DEVICE_ATTR(version, S_IRUGO, show_version, NULL, 0); |
| 851 | |
| 852 | /* Display power use */ |
| 853 | static ssize_t aem_show_power(struct device *dev, |
| 854 | struct device_attribute *devattr, |
| 855 | char *buf) |
| 856 | { |
| 857 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
| 858 | struct aem_data *data = dev_get_drvdata(dev); |
| 859 | u64 before, after, delta, time; |
| 860 | signed long leftover; |
| 861 | struct timespec b, a; |
| 862 | |
| 863 | mutex_lock(&data->lock); |
Darrick J. Wong | bb15e7f | 2008-08-15 00:40:41 -0700 | [diff] [blame] | 864 | update_aem_energy_one(data, attr->index); |
Darrick J. Wong | 8808a79 | 2008-05-23 13:04:25 -0700 | [diff] [blame] | 865 | getnstimeofday(&b); |
| 866 | before = data->energy[attr->index]; |
| 867 | |
| 868 | leftover = schedule_timeout_interruptible( |
| 869 | msecs_to_jiffies(data->power_period[attr->index]) |
| 870 | ); |
| 871 | if (leftover) { |
| 872 | mutex_unlock(&data->lock); |
| 873 | return 0; |
| 874 | } |
| 875 | |
Darrick J. Wong | bb15e7f | 2008-08-15 00:40:41 -0700 | [diff] [blame] | 876 | update_aem_energy_one(data, attr->index); |
Darrick J. Wong | 8808a79 | 2008-05-23 13:04:25 -0700 | [diff] [blame] | 877 | getnstimeofday(&a); |
| 878 | after = data->energy[attr->index]; |
| 879 | mutex_unlock(&data->lock); |
| 880 | |
| 881 | time = timespec_to_ns(&a) - timespec_to_ns(&b); |
| 882 | delta = (after - before) * UJ_PER_MJ; |
| 883 | |
| 884 | return sprintf(buf, "%llu\n", |
| 885 | (unsigned long long)div64_u64(delta * NSEC_PER_SEC, time)); |
| 886 | } |
| 887 | |
| 888 | /* Display energy use */ |
| 889 | static ssize_t aem_show_energy(struct device *dev, |
| 890 | struct device_attribute *devattr, |
| 891 | char *buf) |
| 892 | { |
| 893 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
| 894 | struct aem_data *a = dev_get_drvdata(dev); |
Darrick J. Wong | bb15e7f | 2008-08-15 00:40:41 -0700 | [diff] [blame] | 895 | mutex_lock(&a->lock); |
| 896 | update_aem_energy_one(a, attr->index); |
| 897 | mutex_unlock(&a->lock); |
Darrick J. Wong | 8808a79 | 2008-05-23 13:04:25 -0700 | [diff] [blame] | 898 | |
| 899 | return sprintf(buf, "%llu\n", |
| 900 | (unsigned long long)a->energy[attr->index] * 1000); |
| 901 | } |
| 902 | |
| 903 | /* Display power interval registers */ |
| 904 | static ssize_t aem_show_power_period(struct device *dev, |
| 905 | struct device_attribute *devattr, |
| 906 | char *buf) |
| 907 | { |
| 908 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
| 909 | struct aem_data *a = dev_get_drvdata(dev); |
| 910 | a->update(a); |
| 911 | |
| 912 | return sprintf(buf, "%lu\n", a->power_period[attr->index]); |
| 913 | } |
| 914 | |
| 915 | /* Set power interval registers */ |
| 916 | static ssize_t aem_set_power_period(struct device *dev, |
| 917 | struct device_attribute *devattr, |
| 918 | const char *buf, size_t count) |
| 919 | { |
| 920 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
| 921 | struct aem_data *a = dev_get_drvdata(dev); |
| 922 | unsigned long temp; |
| 923 | int res; |
| 924 | |
| 925 | res = strict_strtoul(buf, 10, &temp); |
| 926 | if (res) |
| 927 | return res; |
| 928 | |
| 929 | if (temp < AEM_MIN_POWER_INTERVAL) |
| 930 | return -EINVAL; |
| 931 | |
| 932 | mutex_lock(&a->lock); |
| 933 | a->power_period[attr->index] = temp; |
| 934 | mutex_unlock(&a->lock); |
| 935 | |
| 936 | return count; |
| 937 | } |
| 938 | |
| 939 | /* Discover sensors on an AEM device */ |
| 940 | static int aem_register_sensors(struct aem_data *data, |
| 941 | struct aem_ro_sensor_template *ro, |
| 942 | struct aem_rw_sensor_template *rw) |
| 943 | { |
| 944 | struct device *dev = &data->pdev->dev; |
| 945 | struct sensor_device_attribute *sensors = data->sensors; |
| 946 | int err; |
| 947 | |
| 948 | /* Set up read-only sensors */ |
| 949 | while (ro->label) { |
| 950 | sensors->dev_attr.attr.name = ro->label; |
| 951 | sensors->dev_attr.attr.mode = S_IRUGO; |
| 952 | sensors->dev_attr.show = ro->show; |
| 953 | sensors->index = ro->index; |
| 954 | |
| 955 | err = device_create_file(dev, &sensors->dev_attr); |
| 956 | if (err) { |
| 957 | sensors->dev_attr.attr.name = NULL; |
| 958 | goto error; |
| 959 | } |
| 960 | sensors++; |
| 961 | ro++; |
| 962 | } |
| 963 | |
| 964 | /* Set up read-write sensors */ |
| 965 | while (rw->label) { |
| 966 | sensors->dev_attr.attr.name = rw->label; |
| 967 | sensors->dev_attr.attr.mode = S_IRUGO | S_IWUSR; |
| 968 | sensors->dev_attr.show = rw->show; |
| 969 | sensors->dev_attr.store = rw->set; |
| 970 | sensors->index = rw->index; |
| 971 | |
| 972 | err = device_create_file(dev, &sensors->dev_attr); |
| 973 | if (err) { |
| 974 | sensors->dev_attr.attr.name = NULL; |
| 975 | goto error; |
| 976 | } |
| 977 | sensors++; |
| 978 | rw++; |
| 979 | } |
| 980 | |
| 981 | err = device_create_file(dev, &sensor_dev_attr_name.dev_attr); |
| 982 | if (err) |
| 983 | goto error; |
| 984 | err = device_create_file(dev, &sensor_dev_attr_version.dev_attr); |
| 985 | return err; |
| 986 | |
| 987 | error: |
| 988 | aem_remove_sensors(data); |
| 989 | return err; |
| 990 | } |
| 991 | |
| 992 | /* sysfs support functions for AEM2 sensors */ |
| 993 | |
| 994 | /* Display temperature use */ |
| 995 | static ssize_t aem2_show_temp(struct device *dev, |
| 996 | struct device_attribute *devattr, |
| 997 | char *buf) |
| 998 | { |
| 999 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
| 1000 | struct aem_data *a = dev_get_drvdata(dev); |
| 1001 | a->update(a); |
| 1002 | |
| 1003 | return sprintf(buf, "%u\n", a->temp[attr->index] * 1000); |
| 1004 | } |
| 1005 | |
| 1006 | /* Display power-capping registers */ |
| 1007 | static ssize_t aem2_show_pcap_value(struct device *dev, |
| 1008 | struct device_attribute *devattr, |
| 1009 | char *buf) |
| 1010 | { |
| 1011 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
| 1012 | struct aem_data *a = dev_get_drvdata(dev); |
| 1013 | a->update(a); |
| 1014 | |
| 1015 | return sprintf(buf, "%u\n", a->pcap[attr->index] * 100000); |
| 1016 | } |
| 1017 | |
| 1018 | /* Remove sensors attached to an AEM device */ |
| 1019 | static void aem_remove_sensors(struct aem_data *data) |
| 1020 | { |
| 1021 | int i; |
| 1022 | |
| 1023 | for (i = 0; i < AEM_NUM_SENSORS; i++) { |
| 1024 | if (!data->sensors[i].dev_attr.attr.name) |
| 1025 | continue; |
| 1026 | device_remove_file(&data->pdev->dev, |
| 1027 | &data->sensors[i].dev_attr); |
| 1028 | } |
| 1029 | |
| 1030 | device_remove_file(&data->pdev->dev, |
| 1031 | &sensor_dev_attr_name.dev_attr); |
| 1032 | device_remove_file(&data->pdev->dev, |
| 1033 | &sensor_dev_attr_version.dev_attr); |
| 1034 | } |
| 1035 | |
| 1036 | /* Sensor probe functions */ |
| 1037 | |
| 1038 | /* Description of AEM1 sensors */ |
| 1039 | static struct aem_ro_sensor_template aem1_ro_sensors[] = { |
| 1040 | {"energy1_input", aem_show_energy, 0}, |
| 1041 | {"power1_average", aem_show_power, 0}, |
| 1042 | {NULL, NULL, 0}, |
| 1043 | }; |
| 1044 | |
| 1045 | static struct aem_rw_sensor_template aem1_rw_sensors[] = { |
| 1046 | {"power1_average_interval", aem_show_power_period, aem_set_power_period, 0}, |
| 1047 | {NULL, NULL, NULL, 0}, |
| 1048 | }; |
| 1049 | |
| 1050 | /* Description of AEM2 sensors */ |
| 1051 | static struct aem_ro_sensor_template aem2_ro_sensors[] = { |
| 1052 | {"energy1_input", aem_show_energy, 0}, |
| 1053 | {"energy2_input", aem_show_energy, 1}, |
| 1054 | {"power1_average", aem_show_power, 0}, |
| 1055 | {"power2_average", aem_show_power, 1}, |
| 1056 | {"temp1_input", aem2_show_temp, 0}, |
| 1057 | {"temp2_input", aem2_show_temp, 1}, |
| 1058 | |
| 1059 | {"power4_average", aem2_show_pcap_value, POWER_CAP_MAX_HOTPLUG}, |
| 1060 | {"power5_average", aem2_show_pcap_value, POWER_CAP_MAX}, |
| 1061 | {"power6_average", aem2_show_pcap_value, POWER_CAP_MIN_WARNING}, |
| 1062 | {"power7_average", aem2_show_pcap_value, POWER_CAP_MIN}, |
| 1063 | |
| 1064 | {"power3_average", aem2_show_pcap_value, POWER_AUX}, |
| 1065 | {"power_cap", aem2_show_pcap_value, POWER_CAP}, |
| 1066 | {NULL, NULL, 0}, |
| 1067 | }; |
| 1068 | |
| 1069 | static struct aem_rw_sensor_template aem2_rw_sensors[] = { |
| 1070 | {"power1_average_interval", aem_show_power_period, aem_set_power_period, 0}, |
| 1071 | {"power2_average_interval", aem_show_power_period, aem_set_power_period, 1}, |
| 1072 | {NULL, NULL, NULL, 0}, |
| 1073 | }; |
| 1074 | |
| 1075 | /* Set up AEM1 sensor attrs */ |
| 1076 | static int aem1_find_sensors(struct aem_data *data) |
| 1077 | { |
| 1078 | return aem_register_sensors(data, aem1_ro_sensors, aem1_rw_sensors); |
| 1079 | } |
| 1080 | |
| 1081 | /* Set up AEM2 sensor attrs */ |
| 1082 | static int aem2_find_sensors(struct aem_data *data) |
| 1083 | { |
| 1084 | return aem_register_sensors(data, aem2_ro_sensors, aem2_rw_sensors); |
| 1085 | } |
| 1086 | |
| 1087 | /* Module init/exit routines */ |
| 1088 | |
| 1089 | static int __init aem_init(void) |
| 1090 | { |
| 1091 | int res; |
| 1092 | |
Darrick J. Wong | fe2d5ff | 2008-11-12 13:25:00 -0800 | [diff] [blame] | 1093 | res = driver_register(&aem_driver.driver); |
Darrick J. Wong | 8808a79 | 2008-05-23 13:04:25 -0700 | [diff] [blame] | 1094 | if (res) { |
Joe Perches | 55d705c | 2010-10-20 06:51:38 +0000 | [diff] [blame] | 1095 | pr_err("Can't register aem driver\n"); |
Darrick J. Wong | 8808a79 | 2008-05-23 13:04:25 -0700 | [diff] [blame] | 1096 | return res; |
| 1097 | } |
| 1098 | |
| 1099 | res = ipmi_smi_watcher_register(&driver_data.bmc_events); |
| 1100 | if (res) |
| 1101 | goto ipmi_reg_err; |
| 1102 | return 0; |
| 1103 | |
| 1104 | ipmi_reg_err: |
Darrick J. Wong | fe2d5ff | 2008-11-12 13:25:00 -0800 | [diff] [blame] | 1105 | driver_unregister(&aem_driver.driver); |
Darrick J. Wong | 8808a79 | 2008-05-23 13:04:25 -0700 | [diff] [blame] | 1106 | return res; |
| 1107 | |
| 1108 | } |
| 1109 | |
| 1110 | static void __exit aem_exit(void) |
| 1111 | { |
| 1112 | struct aem_data *p1, *next1; |
| 1113 | |
| 1114 | ipmi_smi_watcher_unregister(&driver_data.bmc_events); |
Darrick J. Wong | fe2d5ff | 2008-11-12 13:25:00 -0800 | [diff] [blame] | 1115 | driver_unregister(&aem_driver.driver); |
Darrick J. Wong | 8808a79 | 2008-05-23 13:04:25 -0700 | [diff] [blame] | 1116 | list_for_each_entry_safe(p1, next1, &driver_data.aem_devices, list) |
| 1117 | aem_delete(p1); |
| 1118 | } |
| 1119 | |
| 1120 | MODULE_AUTHOR("Darrick J. Wong <djwong@us.ibm.com>"); |
Darrick J. Wong | eb93b7d | 2008-08-15 00:40:40 -0700 | [diff] [blame] | 1121 | MODULE_DESCRIPTION("IBM AEM power/temp/energy sensor driver"); |
Darrick J. Wong | 8808a79 | 2008-05-23 13:04:25 -0700 | [diff] [blame] | 1122 | MODULE_LICENSE("GPL"); |
| 1123 | |
| 1124 | module_init(aem_init); |
| 1125 | module_exit(aem_exit); |
Darrick J. Wong | 21d93c1 | 2008-10-17 17:51:19 +0200 | [diff] [blame] | 1126 | |
| 1127 | MODULE_ALIAS("dmi:bvnIBM:*:pnIBMSystemx3350-*"); |
| 1128 | MODULE_ALIAS("dmi:bvnIBM:*:pnIBMSystemx3550-*"); |
| 1129 | MODULE_ALIAS("dmi:bvnIBM:*:pnIBMSystemx3650-*"); |
| 1130 | MODULE_ALIAS("dmi:bvnIBM:*:pnIBMSystemx3655-*"); |
| 1131 | MODULE_ALIAS("dmi:bvnIBM:*:pnIBMSystemx3755-*"); |
| 1132 | MODULE_ALIAS("dmi:bvnIBM:*:pnIBM3850M2/x3950M2-*"); |
Darrick J. Wong | 8070408 | 2009-06-15 18:39:46 +0200 | [diff] [blame] | 1133 | MODULE_ALIAS("dmi:bvnIBM:*:pnIBMBladeHC10-*"); |