diff options
Diffstat (limited to 'toolchain/kernel-headers/ipmi')
3 files changed, 5742 insertions, 0 deletions
diff --git a/toolchain/kernel-headers/ipmi/linux-2.6.20.4-ipmisensors-20070314-1214.patch b/toolchain/kernel-headers/ipmi/linux-2.6.20.4-ipmisensors-20070314-1214.patch new file mode 100644 index 000000000..aca57c37b --- /dev/null +++ b/toolchain/kernel-headers/ipmi/linux-2.6.20.4-ipmisensors-20070314-1214.patch @@ -0,0 +1,1914 @@ +diff -rduNp linux-2.6.20.3.orig/drivers/char/ipmi/ipmi_msghandler.c linux-2.6.20.3/drivers/char/ipmi/ipmi_msghandler.c +--- linux-2.6.20.3.orig/drivers/char/ipmi/ipmi_msghandler.c 2007-03-13 19:27:08.000000000 +0100 ++++ linux-2.6.20.3/drivers/char/ipmi/ipmi_msghandler.c 2007-03-14 14:23:02.000000000 +0100 +@@ -1954,6 +1954,24 @@ static void remove_proc_entries(ipmi_smi + #endif /* CONFIG_PROC_FS */ + } + ++/* ++ * Retrieves the bmc_device struct for a given ipmi interface number (or NULL if none). ++ */ ++struct device *ipmi_get_bmcdevice(int if_num) ++{ ++ ipmi_smi_t intf; ++ mutex_lock(&ipmi_interfaces_mutex); ++ list_for_each_entry_rcu(intf, &ipmi_interfaces, link) { ++ if (intf->intf_num == if_num){ ++ mutex_unlock(&ipmi_interfaces_mutex); ++ return &intf->bmc->dev->dev; ++ } ++ } ++ mutex_unlock(&ipmi_interfaces_mutex); ++ ++ return NULL; ++} ++ + static int __find_bmc_guid(struct device *dev, void *data) + { + unsigned char *id = data; +@@ -4183,3 +4201,4 @@ EXPORT_SYMBOL(ipmi_get_my_LUN); + EXPORT_SYMBOL(ipmi_smi_add_proc_entry); + EXPORT_SYMBOL(ipmi_user_set_run_to_completion); + EXPORT_SYMBOL(ipmi_free_recv_msg); ++EXPORT_SYMBOL(ipmi_get_bmcdevice); +diff -rduNp linux-2.6.20.3.orig/drivers/hwmon/Kconfig linux-2.6.20.3/drivers/hwmon/Kconfig +--- linux-2.6.20.3.orig/drivers/hwmon/Kconfig 2007-03-13 19:27:08.000000000 +0100 ++++ linux-2.6.20.3/drivers/hwmon/Kconfig 2007-03-14 14:23:02.000000000 +0100 +@@ -218,6 +218,16 @@ config SENSORS_GL520SM + This driver can also be built as a module. If so, the module + will be called gl520sm. + ++config SENSORS_IPMI ++ tristate "IPMI Hardware Monitoring Support" ++ depends on HWMON && IPMI_HANDLER && EXPERIMENTAL ++ help ++ If you say yes here you get support for sensors monitored by ++ an IPMI baseboard management controller (BMC). ++ ++ This driver can also be built as a module. If so, the module ++ will be called ipmisensors. ++ + config SENSORS_IT87 + tristate "ITE IT87xx and compatibles" + depends on HWMON && I2C +diff -rduNp linux-2.6.20.3.orig/drivers/hwmon/Makefile linux-2.6.20.3/drivers/hwmon/Makefile +--- linux-2.6.20.3.orig/drivers/hwmon/Makefile 2007-03-13 19:27:08.000000000 +0100 ++++ linux-2.6.20.3/drivers/hwmon/Makefile 2007-03-14 14:23:02.000000000 +0100 +@@ -28,6 +28,7 @@ obj-$(CONFIG_SENSORS_FSCPOS) += fscpos.o + obj-$(CONFIG_SENSORS_GL518SM) += gl518sm.o + obj-$(CONFIG_SENSORS_GL520SM) += gl520sm.o + obj-$(CONFIG_SENSORS_HDAPS) += hdaps.o ++obj-$(CONFIG_SENSORS_IPMI) += ipmisensors.o + obj-$(CONFIG_SENSORS_IT87) += it87.o + obj-$(CONFIG_SENSORS_K8TEMP) += k8temp.o + obj-$(CONFIG_SENSORS_LM63) += lm63.o +diff -rduNp linux-2.6.20.3.orig/drivers/hwmon/ipmisensors.c linux-2.6.20.3/drivers/hwmon/ipmisensors.c +--- linux-2.6.20.3.orig/drivers/hwmon/ipmisensors.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.20.3/drivers/hwmon/ipmisensors.c 2007-03-14 14:44:42.000000000 +0100 +@@ -0,0 +1,1552 @@ ++/* ++ * ipmisensors.c - lm-sensors/hwmon interface to IPMI sensors. ++ * ++ * Copyright (C) 2004-2006 Yani Ioannou <yani.ioannou@gmail.com> ++ * ++ * Adapted from bmcsensors (lm-sensors for linux 2.4) ++ * bmcsensors (C) Mark D. Studebaker <mdsxyz123@yahoo.com> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License as published by ++ * the Free Software Foundation; either version 2 of the License, or ++ * (at your option) any later version. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ * ++ * You should have received a copy of the GNU General Public License ++ * along with this program; if not, write to the Free Software ++ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. ++ */ ++ ++#include <linux/init.h> ++#include <linux/module.h> ++#include <linux/param.h> ++#include <linux/hwmon.h> ++#include <linux/list.h> ++#include <linux/slab.h> ++#include <linux/device.h> ++#include <linux/hwmon.h> ++ ++#include "ipmisensors.h" ++ ++/****** Function Prototypes ******/ ++static void ipmisensors_send_message(struct ipmisensors_bmc_data *bmc, ++ long msgid, struct kernel_ipmi_msg *msg); ++static void ipmisensors_reserve_sdr(struct ipmisensors_bmc_data *bmc); ++static void ipmisensors_get_sdr(struct ipmisensors_bmc_data *bmc, u16 res_id, ++ u16 record, u8 offset); ++static void ipmisensors_set_sensor_threshold(struct ipmisensors_bmc_data *bmc, ++ u8 number, int value, ++ int lim_index); ++static void ipmisensors_get_reading(struct ipmisensors_bmc_data *bmc, ++ struct sdrdata *sdr); ++static void ipmisensors_msg_handler(struct ipmi_recv_msg *msg, ++ void *user_msg_data); ++static int ipmisensors_intf_registered(int ipmi_intf); ++static int ipmisensors_bmc_registered(struct device *bmc); ++static void ipmisensors_register_bmc(int ipmi_intf, struct ipmi_addr *address); ++static void ipmisensors_unregister_bmc(int ipmi_intf); ++static void ipmisensors_unregister_bmc_all(void); ++static void ipmisensors_new_smi(int if_num, struct device *dev); ++static void ipmisensors_smi_gone(int if_num); ++static void ipmisensors_update_bmc(struct work_struct *); ++static void ipmisensors_cleanup(void); ++ ++/****** Static Vars ******/ ++ ++/* set when module is being removed */ ++static int cleanup = 0; ++ ++/* ipmisensors driver data */ ++static struct ipmisensors_data driver_data = { ++ .driver_name = "bmc", ++ .bmc_data = LIST_HEAD_INIT(driver_data.bmc_data), ++ .interfaces = 0, ++ .smi_watcher = { ++ .owner = THIS_MODULE, ++ .new_smi = ipmisensors_new_smi, ++ .smi_gone = ipmisensors_smi_gone, ++ }, ++ .ipmi_hndlrs = { ++ .ipmi_recv_hndl = ipmisensors_msg_handler, ++ }, ++}; ++ ++/* sensor refresh workqueue */ ++static struct workqueue_struct *ipmisensors_workqueue; ++ ++/****** SDR List Functions ******/ ++/** ++ * Creates a new sdrdata struct, or returns NULL if insufficient memory. ++ */ ++static struct sdrdata *ipmisensors_new_sdr(void) ++{ ++ struct sdrdata *sdr; ++ ++ sdr = kmem_cache_alloc(driver_data.sdrdata_cache, GFP_ATOMIC); ++ if (sdr) { ++ memset(sdr, 0, sizeof(struct sdrdata)); ++ } else { ++ printk(KERN_ERR ++ "ipmisensors: Couldn't allocate memory for new SDR\n"); ++ } ++ ++ return sdr; ++} ++ ++/** ++ * Adds the given sdrdata struct to the given bmc's SDR list. ++ * ++ * @bmc: the bmc to send the message to. ++ */ ++static inline void ipmisensors_add_sdr(struct ipmisensors_bmc_data *bmc, ++ struct sdrdata *sdr) ++{ ++ list_add(&sdr->list, &bmc->sdrs); ++ printk(KERN_DEBUG ++ "ipmisensors: SDR %d: type 0x%02x (%s)\n", ++ bmc->sdr_count, sdr->stype, sdr->id); ++ bmc->sdr_count++; ++} ++ ++/** ++ * Cleanup the sdr list for the given BMC. ++ * ++ * @bmc: the bmc to send the message to. ++ */ ++static void ipmisensors_sdr_cleanup(struct ipmisensors_bmc_data *bmc) ++{ ++ struct sdrdata *cursor, *next; ++ ++ /* find and free each sdr data struct */ ++ list_for_each_entry_safe(cursor, next, &bmc->sdrs, list) { ++ device_remove_file(bmc->dev, &cursor->attr.dev_attr); ++ device_remove_file(bmc->dev, &cursor->attr_min.dev_attr); ++ device_remove_file(bmc->dev, &cursor->attr_max.dev_attr); ++ device_remove_file(bmc->dev, &cursor->attr_label.dev_attr); ++ ++ kfree(cursor->attr_name); ++ kfree(cursor->attr_max_name); ++ kfree(cursor->attr_min_name); ++ kfree(cursor->attr_label_name); ++ ++ list_del(&cursor->list); ++ kmem_cache_free(driver_data.sdrdata_cache, cursor); ++ } ++} ++ ++/* worker function for workqueue ipmisensors_workqueue */ ++static void ipmisensors_update_bmc(struct work_struct *work) ++{ ++ struct ipmisensors_bmc_data *bmc = container_of(work, struct ipmisensors_bmc_data, update_work.work); ++ ++ /* don't start an update cycle if one already in progress */ ++ if (bmc->state != STATE_READING) { ++ struct sdrdata *cursor, *next; ++ bmc->state = STATE_READING; ++ printk(KERN_DEBUG "ipmisensors: starting update\n"); ++ ++ /* init semaphore to 1 for update cycle */ ++ sema_init(&bmc->update_semaphore, 1); ++ ++ /* update each sdr reading */ ++ list_for_each_entry_safe(cursor, next, &bmc->sdrs, list) { ++ ipmisensors_get_reading(bmc, cursor); ++ } ++ } ++ ++ /* wait for readings (need timeout?) */ ++ down_interruptible(&bmc->update_semaphore); ++ ++ printk(KERN_DEBUG "ipmisensors: update complete\n"); ++ ++ bmc->state = STATE_DONE; ++ ++ /* if the module isn't cleaning up, schedule another update */ ++ if (!cleanup) ++ queue_delayed_work(ipmisensors_workqueue, &bmc->update_work, ++ bmc->update_period * HZ); ++} ++ ++/****** IPMI Message Sending ******/ ++ ++/** ++ * Send a message to the IPMI BMC ++ * ++ * @bmc: the bmc to send the message to. ++ * @msgid: the message id to use. ++ * @msg: the ipmi message structure. ++ */ ++static void ipmisensors_send_message(struct ipmisensors_bmc_data *bmc, ++ long msgid, struct kernel_ipmi_msg *msg) ++{ ++ if (msg->data == NULL) ++ printk(KERN_DEBUG "ipmisensors: Send 0x%x\n", msg->cmd); ++ else ++ printk(KERN_DEBUG "ipmisensors: Send 0x%x 0x%x 0x%x\n", ++ msg->cmd, msg->data[0], msg->data[1]); ++ ++ /* This should be ipmi_request, but Corey had to remove ++ * that due to it being unused at the moment, as soon as ++ * this makes it into the kernel we should request it be re-instated. ++ */ ++ ipmi_request_settime(bmc->user, &bmc->address, msgid, msg, bmc, 0, ++ -1, 0); ++} ++ ++/** ++ * Compose and send a "reserve SDR" message ++ * ++ * @bmc: the bmc to send the message to. ++ */ ++static void ipmisensors_reserve_sdr(struct ipmisensors_bmc_data *bmc) ++{ ++ bmc->tx_message.netfn = IPMI_NETFN_STORAGE_REQUEST; ++ bmc->tx_message.cmd = IPMI_RESERVE_SDR; ++ bmc->tx_message.data_len = 0; ++ bmc->tx_message.data = NULL; ++ ++ ipmisensors_send_message(bmc, bmc->msgid++, &bmc->tx_message); ++} ++ ++/** ++ * Componse and send a "get SDR" message ++ * ++ * @bmc: the bmc to send the message to. ++ * @res_id: ++ * @record: ++ * @offset: ++ */ ++static void ipmisensors_get_sdr(struct ipmisensors_bmc_data *bmc, u16 res_id, ++ u16 record, u8 offset) ++{ ++ printk(KERN_DEBUG "ipmisensors: Get SDR 0x%x 0x%x 0x%x\n", ++ res_id, record, offset); ++ bmc->tx_message.netfn = IPMI_NETFN_STORAGE_REQUEST; ++ bmc->tx_message.cmd = IPMI_GET_SDR; ++ bmc->tx_message.data_len = 6; ++ bmc->tx_message.data = bmc->tx_msg_data; ++ bmc->tx_msg_data[0] = res_id & 0xff; ++ bmc->tx_msg_data[1] = res_id >> 8; ++ bmc->tx_msg_data[2] = record & 0xff; ++ bmc->tx_msg_data[3] = record >> 8; ++ bmc->tx_msg_data[4] = offset; ++ bmc->tx_msg_data[5] = bmc->ipmi_sdr_partial_size; ++ ++ ipmisensors_send_message(bmc, bmc->msgid++, &bmc->tx_message); ++} ++ ++/** ++ * Compose and send a "set sensor threshold" message ++ * ++ * @bmc: the bmc to send the message to. ++ * @id: the ipmi id number of the sensor. ++ * @value: the new value for the threshold. ++ * @lim_index: the index in the lim[] array for which this value applies. ++ */ ++static void ipmisensors_set_sensor_threshold(struct ipmisensors_bmc_data *bmc, ++ u8 number, int value, ++ int lim_index) ++{ ++ int i; ++ ++ printk(KERN_DEBUG "ipmisensors: Set SDR Threshold %d %d %d\n", ++ number, value, lim_index); ++ bmc->tx_message.netfn = IPMI_NETFN_STORAGE_REQUEST; ++ bmc->tx_message.cmd = IPMI_SET_SENSOR_THRESHOLD; ++ bmc->tx_message.data_len = 8; ++ bmc->tx_message.data = bmc->tx_msg_data; ++ bmc->tx_msg_data[0] = number & 0xff; ++ bmc->tx_msg_data[1] = 0x01 << lim_index; ++ ++ if (lim_index > 5 || lim_index < 0) { ++ printk(KERN_INFO ++ "ipmisensors: Error - ipmisensors_set_sensor_threshold given invalid lim_index\n"); ++ return; ++ } ++ ++ for (i = 2; i < 8; i++) ++ bmc->tx_msg_data[i] = 0x00; ++ ++ bmc->tx_msg_data[lim_index] = value && 0xff; ++ ++ ipmisensors_send_message(bmc, bmc->msgid++, &bmc->tx_message); ++} ++ ++/** ++ * Compose and send a "get sensor reading" message for the given sdr. ++ * ++ * @bmc: the bmc to send the message to. ++ * @sdr: the sdr of the sensor to get the reading for. ++ */ ++static void ipmisensors_get_reading(struct ipmisensors_bmc_data *bmc, ++ struct sdrdata *sdr) ++{ ++ bmc->tx_message.netfn = IPMI_NETFN_SENSOR_EVENT_REQUEST; ++ bmc->tx_message.cmd = IPMI_GET_SENSOR_STATE_READING; ++ bmc->tx_message.data_len = 1; ++ bmc->tx_message.data = bmc->tx_msg_data; ++ bmc->tx_msg_data[0] = sdr->number; ++ bmc->current_sdr = sdr; ++ ++ ipmisensors_send_message(bmc, bmc->msgid++, &bmc->tx_message); ++ down_interruptible(&bmc->update_semaphore); ++} ++ ++/****** IPMI Message Receiving ******/ ++ ++/** ++ * Process an sensor reading response message. ++ * ++ * @bmc: the bmc the message is from ++ * @msg: the IPMI SDR response message ++ */ ++static void ipmisensors_rcv_reading_msg(struct ipmisensors_bmc_data *bmc, ++ struct kernel_ipmi_msg *msg) ++{ ++ struct sdrdata *sdr = bmc->current_sdr; ++ ++ if (sdr == NULL) { ++ printk(KERN_ERR ++ "ipmisensors: Error ipmisensors_rcv_reading with NULL sdr\n"); ++ return; ++ } ++ ++ sdr->reading = msg->data[1]; ++ sdr->status = msg->data[2]; ++ sdr->thresholds = msg->data[3]; ++ ++ printk(KERN_DEBUG "ipmisensors: sensor %d (type %d) reading %d\n", ++ sdr->number, sdr->stype, msg->data[1]); ++ ++ up(&bmc->update_semaphore); ++} ++ ++/** ++ * Unpack based on string type, convert to normal, null terminate. ++ */ ++static void ipmisensors_sprintf(u8 * to, u8 * from, u8 type, u8 length) ++{ ++ static const u8 *bcdplus = "0123456789 -.:,_"; ++ int i; ++ ++ switch (type) { ++ case 0: /* unicode */ ++ for (i = 0; i < length; i++) ++ *to++ = (*from++ & 0x7f); ++ *to = 0; ++ break; ++ case 1: /* BCD Plus */ ++ for (i = 0; i < length; i++) ++ *to++ = bcdplus[*from++ & 0x0f]; ++ *to = 0; ++ break; ++ case 2: /* packed ascii *//* if not a mult. of 3 this will run over */ ++ for (i = 0; i < length; i += 3) { ++ *to++ = *from & 0x3f; ++ *to++ = *from >> 6 | ((*(from+1) & 0xf) << 2); ++ from++; ++ *to++ = *from >> 4 | ((*(from+1) & 0x3) << 4); ++ from++; ++ *to++ = (*from++ >> 2) & 0x3f; ++ } ++ *to = 0; ++ break; ++ case 3: /* normal */ ++ if (length > 1) ++ memcpy(to, from, length); ++ to[length] = 0; ++ break; ++ } ++} ++ ++/* IPMI V1.5 Section 30 */ ++static const int exps[] = ++ { 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000 }; ++ ++/* Return 0 for fan, 2 for temp, 3 for voltage ++ We could make it variable based on the accuracy (= log10(m * 10**k2)); ++ this would work for /proc output, however libsensors resolution ++ is statically set in lib/chips.c */ ++static int decplaces(struct sdrdata *sd) ++{ ++ switch (sd->stype) { ++ case STYPE_TEMP: ++ return 2; ++ case STYPE_CURR: ++ case STYPE_VOLT: ++ return 3; ++ case STYPE_FAN: ++ default: ++ return 0; ++ } ++} ++ ++/* convert a raw value to a reading. IMPI V1.5 Section 30 */ ++static long conv_val(int value, struct sdrdata *sd) ++{ ++ u8 k1, k2; ++ long r; ++ ++ r = value * sd->m; ++ k1 = sd->k & 0x0f; ++ k2 = sd->k >> 4; ++ if (k1 < 8) ++ r += sd->b * exps[k1]; ++ else ++ r += sd->b / exps[16 - k1]; ++ r *= exps[decplaces(sd)]; ++ if (k2 < 8) { ++ if (sd->linear != 7) ++ r *= exps[k2]; ++ else ++ /* this will always truncate to 0: r = 1 / (exps[k2] * r); */ ++ r = 0; ++ } else { ++ if (sd->linear != 7) ++ r /= exps[16 - k2]; ++ else { ++ if (r != 0) ++ /* 1 / x * 10 ** (-m) == 10 ** m / x */ ++ r = exps[16 - k2] / r; ++ else ++ r = 0; ++ } ++ } ++ ++ return r; ++} ++ ++static const char *threshold_text[] = { ++ "upper non-recoverable threshold", ++ "upper critical threshold", ++ "upper non-critical threshold", ++ "lower non-recoverable threshold", ++ "lower critical threshold", ++ "lower non-critical threshold", ++ "positive-going hysteresis", ++ "negative-going hysteresis" /* unused */ ++}; ++ ++/* select two out of the 8 possible readable thresholds, and place indexes into the limits ++ array into lim1 and lim2. Set writable flags */ ++static void ipmisensors_select_thresholds(struct sdrdata *sd) ++{ ++ u8 capab = sd->capab; ++ u16 mask = sd->thresh_mask; ++ int tmp; ++ ++ sd->lim1 = -1; ++ sd->lim2 = -1; ++ sd->lim1_write = 0; ++ sd->lim2_write = 0; ++ ++ if (((capab & 0x0c) == 0x04) || /* readable thresholds ? */ ++ ((capab & 0x0c) == 0x08)) { ++ /* select upper threshold */ ++ if (mask & 0x10) { /* upper crit */ ++ sd->lim1 = 1; ++ if ((capab & 0x0c) == 0x08 && (mask & 0x1000)) ++ sd->lim1_write = 1; ++ } else if (mask & 0x20) { /* upper non-recov */ ++ sd->lim1 = 0; ++ if ((capab & 0x0c) == 0x08 && (mask & 0x2000)) ++ sd->lim1_write = 1; ++ } else if (mask & 0x08) { /* upper non-crit */ ++ sd->lim1 = 2; ++ if ((capab & 0x0c) == 0x08 && (mask & 0x0800)) ++ sd->lim1_write = 1; ++ } ++ ++ /* select lower threshold */ ++ if ((((capab & 0x30) == 0x10) || /* readable ? */ ++ ((capab & 0x30) == 0x20)) && /* pos hyst */ ++ sd->stype == STYPE_TEMP) ++ sd->lim2 = 6; ++ else if (mask & 0x02) { /* lower crit */ ++ sd->lim2 = 4; ++ if ((capab & 0x0c) == 0x08 && (mask & 0x0200)) ++ sd->lim2_write = 1; ++ } else if (mask & 0x04) { /* lower non-recov */ ++ sd->lim2 = 3; ++ if ((capab & 0x0c) == 0x08 && (mask & 0x0400)) ++ sd->lim2_write = 1; ++ } else if (mask & 0x01) { /* lower non-crit */ ++ sd->lim2 = 5; ++ if ((capab & 0x0c) == 0x08 && (mask & 0x0100)) ++ sd->lim2_write = 1; ++ } ++ } ++ ++ /* swap lim1/lim2 if m < 0 or function is 1/x (but not both!) */ ++ if ((sd->m < 0 && sd->linear != 7) || (sd->m >= 0 && sd->linear == 7)) { ++ tmp = sd->lim1; ++ sd->lim1 = sd->lim2; ++ sd->lim2 = tmp; ++ } ++ ++ if (sd->lim1 >= 0) ++ printk(KERN_INFO "ipmisensors: using %s for upper limit\n", ++ threshold_text[sd->lim1]); ++ else ++ printk(KERN_DEBUG "ipmisensors: no readable upper limit\n"); ++ ++ if (sd->lim2 >= 0) ++ printk(KERN_INFO "ipmisensors: using %s for lower limit\n", ++ threshold_text[sd->lim2]); ++ else ++ printk(KERN_DEBUG "ipmisensors: no readable lower limit\n"); ++} ++ ++/************* sysfs callback functions *********/ ++static ssize_t show_update_period(struct device *dev, ++ struct device_attribute *attr, char *buf) ++{ ++ struct ipmisensors_bmc_device_attribute *aattr = ++ to_ipmisensors_bmc_dev_attr(attr); ++ ++ return snprintf(buf, 20, "%d\n", aattr->bmc->update_period); ++} ++ ++static ssize_t store_update_period(struct device *dev, ++ struct device_attribute *attr, ++ const char *buf, size_t count) ++{ ++ struct ipmisensors_bmc_device_attribute *aattr = ++ to_ipmisensors_bmc_dev_attr(attr); ++ ++ aattr->bmc->update_period = simple_strtoul(buf, NULL, 10);; ++ return count; ++}; ++ ++static ssize_t show_sensor(struct device *dev, struct device_attribute *attr, ++ char *buf) ++{ ++ struct ipmisensors_device_attribute *sattr = ++ to_ipmisensors_dev_attr(attr); ++ return snprintf(buf, 20, "%ld\n", ++ conv_val(sattr->sdr->reading, sattr->sdr)); ++} ++ ++static ssize_t show_sensor_max(struct device *dev, ++ struct device_attribute *attr, char *buf) ++{ ++ long max = 0; ++ struct ipmisensors_device_attribute *sattr = ++ to_ipmisensors_dev_attr(attr); ++ ++ if (sattr->sdr->lim1 >= 0) ++ max = conv_val(sattr->sdr->limits[sattr->sdr->lim1], ++ sattr->sdr); ++ return snprintf(buf, 20, "%ld\n", max); ++} ++ ++static ssize_t show_sensor_min(struct device *dev, ++ struct device_attribute *attr, char *buf) ++{ ++ long min = 0; ++ struct ipmisensors_device_attribute *sattr = ++ to_ipmisensors_dev_attr(attr); ++ ++ if (sattr->sdr->lim2 >= 0) ++ min = conv_val(sattr->sdr->limits[sattr->sdr->lim2], ++ sattr->sdr); ++ return snprintf(buf, 20, "%ld\n", min); ++}; ++ ++static ssize_t show_sensor_label(struct device *dev, ++ struct device_attribute *attr, char *buf) ++{ ++ u8 label[SDR_MAX_UNPACKED_ID_LENGTH]; ++ struct ipmisensors_device_attribute *sattr = ++ to_ipmisensors_dev_attr(attr); ++ ++ ipmisensors_sprintf(label, sattr->sdr->id, sattr->sdr->string_type, ++ sattr->sdr->id_length); ++ return snprintf(buf, 20, "%s\n", label); ++}; ++ ++static ssize_t store_sensor_max(struct device *dev, ++ struct device_attribute *attr, const char *buf, ++ size_t count) ++{ ++ long val = simple_strtoul(buf, NULL, 10); ++ struct ipmisensors_device_attribute *sattr = ++ to_ipmisensors_dev_attr(attr); ++ printk(KERN_DEBUG "ipmisensors: set max on sensor #%d to %ld", ++ sattr->sdr->number, val); ++ ipmisensors_set_sensor_threshold(sattr->sdr->bmc, sattr->sdr->number, ++ val, sattr->sdr->lim1); ++ return count; ++}; ++ ++static ssize_t store_sensor_min(struct device *dev, ++ struct device_attribute *attr, const char *buf, ++ size_t count) ++{ ++ long val = simple_strtoul(buf, NULL, 10); ++ struct ipmisensors_device_attribute *sattr = ++ to_ipmisensors_dev_attr(attr); ++ printk(KERN_DEBUG "ipmisensors: set min on sensor #%d to %ld", ++ sattr->sdr->number, val); ++ ipmisensors_set_sensor_threshold(sattr->sdr->bmc, sattr->sdr->number, ++ val, sattr->sdr->lim2); ++ return count; ++}; ++ ++static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, ++ char *buf) ++{ ++ struct ipmisensors_bmc_device_attribute *aattr = ++ to_ipmisensors_bmc_dev_attr(attr); ++ return snprintf(buf, 20, "%d\n", aattr->bmc->alarms); ++}; ++ ++static ssize_t show_name(struct device *dev, struct device_attribute *attr, ++ char *buf) ++{ ++ return snprintf(buf, 20, "%s\n", driver_data.driver_name); ++}; ++ ++/* work function to build the sysfs entries using the ipmi sdrs */ ++static void ipmisensors_build_sysfs(struct work_struct *work) ++{ ++ int temps = 0, volts = 0, currs = 0, fans = 0; ++ struct sdrdata *cursor, *next; ++ struct ipmisensors_bmc_data *bmc = container_of(work, struct ipmisensors_bmc_data, sysfs_work); ++ ++ /* find and create entries for each sdr data struct */ ++ list_for_each_entry_safe(cursor, next, &bmc->sdrs, list) { ++ u8 id[SDR_MAX_UNPACKED_ID_LENGTH]; ++ ++ cursor->attr_name = ++ (char *)kmalloc(sizeof(char) * MAX_FILENAME_LENGTH, ++ GFP_KERNEL); ++ cursor->attr_max_name = ++ (char *)kmalloc(sizeof(char) * MAX_FILENAME_LENGTH, ++ GFP_KERNEL); ++ cursor->attr_min_name = ++ (char *)kmalloc(sizeof(char) * MAX_FILENAME_LENGTH, ++ GFP_KERNEL); ++ ++ if (cursor->id_length > 0) { ++ cursor->attr_label_name = ++ (char *)kmalloc(sizeof(char) * MAX_FILENAME_LENGTH, ++ GFP_KERNEL); ++ ++ if (cursor->attr_label_name == NULL) { ++ printk(KERN_INFO ++ "ipmisensors: Out of memory (kmalloc failed)"); ++ kfree(cursor->attr_name); ++ kfree(cursor->attr_max_name); ++ kfree(cursor->attr_min_name); ++ return; ++ } ++ } ++ ++ if (cursor->attr_name == NULL || cursor->attr_max_name == NULL ++ || cursor->attr_min_name == NULL ++ || cursor->attr_label_name == NULL) { ++ printk(KERN_INFO ++ "ipmisensors: Out of memory (kmalloc failed)"); ++ kfree(cursor->attr_name); ++ kfree(cursor->attr_max_name); ++ kfree(cursor->attr_min_name); ++ kfree(cursor->attr_label_name); ++ return; ++ } ++ ++ switch (cursor->stype) { ++ case (STYPE_TEMP): ++ /* create the name of the sensor */ ++ snprintf(cursor->attr_name, MAX_FILENAME_LENGTH, ++ "temp%d_input", ++temps); ++ /* create min, max attributes */ ++ snprintf(cursor->attr_max_name, MAX_FILENAME_LENGTH, ++ "temp%d_max", temps); ++ snprintf(cursor->attr_min_name, MAX_FILENAME_LENGTH, ++ "temp%d_min", temps); ++ /* create the label of the sensor */ ++ snprintf(cursor->attr_label_name, MAX_FILENAME_LENGTH, ++ "temp%d_label", temps); ++ break; ++ case (STYPE_VOLT): ++ /* create the name of the sensor */ ++ snprintf(cursor->attr_name, MAX_FILENAME_LENGTH, ++ "in%d_input", ++volts); ++ /* create min, max attributes */ ++ snprintf(cursor->attr_max_name, MAX_FILENAME_LENGTH, ++ "in%d_max", volts); ++ snprintf(cursor->attr_min_name, MAX_FILENAME_LENGTH, ++ "in%d_min", volts); ++ /* create the label of the sensor */ ++ snprintf(cursor->attr_label_name, MAX_FILENAME_LENGTH, ++ "in%d_label", volts); ++ break; ++ case (STYPE_CURR): ++ /* create the name of the sensor */ ++ snprintf(cursor->attr_name, MAX_FILENAME_LENGTH, ++ "curr%d_input", ++currs); ++ /* create min, max attributes */ ++ sprintf(cursor->attr_max_name, "curr%d_max", currs); ++ sprintf(cursor->attr_min_name, "curr%d_min", currs); ++ /* create the label of the sensor */ ++ snprintf(cursor->attr_label_name, MAX_FILENAME_LENGTH, ++ "curr%d_label", currs); ++ break; ++ case (STYPE_FAN): ++ /* create the name of the sensor */ ++ snprintf(cursor->attr_name, MAX_FILENAME_LENGTH, ++ "fan%d_input", ++fans); ++ /* create min, max attributes */ ++ sprintf(cursor->attr_max_name, "fan%d_max", fans); ++ sprintf(cursor->attr_min_name, "fan%d_min", fans); ++ /* create the label of the sensor */ ++ snprintf(cursor->attr_label_name, MAX_FILENAME_LENGTH, ++ "fan%d_label", fans); ++ break; ++ default: ++ printk(KERN_INFO "ipmisensors: unkown sensor type\n"); ++ continue; ++ } ++ ++ cursor->attr.dev_attr.attr.name = cursor->attr_name; ++ cursor->attr.dev_attr.attr.mode = S_IRUGO; ++ cursor->attr.dev_attr.attr.owner = THIS_MODULE; ++ cursor->attr.dev_attr.show = show_sensor; ++ cursor->attr.dev_attr.store = NULL; ++ cursor->attr.sdr = cursor; ++ ++ cursor->attr_min.dev_attr.attr.name = cursor->attr_min_name; ++ cursor->attr_min.dev_attr.attr.owner = THIS_MODULE; ++ cursor->attr_min.dev_attr.show = show_sensor_min; ++ cursor->attr_min.sdr = cursor; ++ ++ if (cursor->lim2_write) { ++ printk(KERN_INFO ++ "ipmisensors: You have a writable sensor threshold! Send me an e-mail at <yani.ioannou@gmail.com>.\n"); ++ cursor->attr_min.dev_attr.store = store_sensor_min; ++ cursor->attr_min.dev_attr.attr.mode = S_IWUSR | S_IRUGO; ++ } else { ++ cursor->attr_min.dev_attr.store = NULL; ++ cursor->attr_min.dev_attr.attr.mode = S_IRUGO; ++ } ++ ++ cursor->attr_max.dev_attr.attr.name = cursor->attr_max_name; ++ cursor->attr_max.dev_attr.attr.owner = THIS_MODULE; ++ cursor->attr_max.dev_attr.show = show_sensor_max; ++ cursor->attr_max.sdr = cursor; ++ ++ if (cursor->lim1_write) { ++ printk(KERN_INFO ++ "ipmisensors: You have a writable sensor threshold! Send me an e-mail at <yani.ioannou@gmail.com>.\n"); ++ cursor->attr_max.dev_attr.store = store_sensor_max; ++ cursor->attr_max.dev_attr.attr.mode = S_IWUSR | S_IRUGO; ++ } else { ++ cursor->attr_max.dev_attr.store = NULL; ++ cursor->attr_max.dev_attr.attr.mode = S_IRUGO; ++ } ++ ++ if (cursor->id_length > 0) { ++ cursor->attr_label.dev_attr.attr.name = ++ cursor->attr_label_name; ++ cursor->attr_label.dev_attr.attr.mode = S_IRUGO; ++ cursor->attr_label.dev_attr.attr.owner = THIS_MODULE; ++ cursor->attr_label.dev_attr.show = show_sensor_label; ++ cursor->attr_label.dev_attr.store = NULL; ++ cursor->attr_label.sdr = cursor; ++ } ++ ++ printk(KERN_INFO ++ "ipmisensors: registering sensor %d: (type 0x%.2x) " ++ "(fmt=%d; m=%d; b=%d; k1=%d; k2=%d; cap=0x%.2x; mask=0x%.4x)\n", ++ cursor->number, cursor->stype, cursor->format, cursor->m, ++ cursor->b, cursor->k & 0xf, cursor->k >> 4, ++ cursor->capab, cursor->thresh_mask); ++ ++ if (cursor->id_length > 0) { ++ ipmisensors_sprintf(id, cursor->id, cursor->string_type, ++ cursor->id_length); ++ switch (cursor->stype) { ++ case (STYPE_TEMP): ++ printk(KERN_INFO ++ "ipmisensors: sensors.conf: label temp%d \"%s\"\n", ++ temps, id); ++ break; ++ case (STYPE_VOLT): ++ printk(KERN_INFO ++ "ipmisensors: sensors.conf: label in%d \"%s\"\n", ++ volts, id); ++ break; ++ case (STYPE_CURR): ++ printk(KERN_INFO ++ "ipmisensors: sensors.conf: label curr%d \"%s\"\n", ++ currs, id); ++ break; ++ case (STYPE_FAN): ++ printk(KERN_INFO ++ "ipmisensors: sensors.conf: label fan%d \"%s\"\n", ++ fans, id); ++ break; ++ } ++ } ++ ++ ipmisensors_select_thresholds(cursor); ++ ++ if (cursor->linear != 0 && cursor->linear != 7) { ++ printk(KERN_INFO ++ "ipmisensors: sensor %d: nonlinear function 0x%.2x unsupported, expect bad results\n", ++ cursor->number, cursor->linear); ++ } ++ ++ if ((cursor->format & 0x03) == 0x02) { ++ printk(KERN_INFO ++ "ipmisensors: sensor %d: 1's complement format unsupported, expect bad results\n", ++ cursor->number); ++ } else if ((cursor->format & 0x03) == 0x03) { ++ printk(KERN_INFO ++ "ipmisensors: sensor %d: threshold sensor only, no readings available", ++ cursor->number); ++ } ++ ++ if (cursor->lim1_write || cursor->lim2_write) ++ cursor->attr.dev_attr.attr.mode = 0644; ++ else ++ cursor->attr.dev_attr.attr.mode = 0444; ++ ++ if (device_create_file(bmc->dev, &cursor->attr.dev_attr) < 0 ++ || device_create_file(bmc->dev, ++ &cursor->attr_min.dev_attr) < 0 ++ || device_create_file(bmc->dev, ++ &cursor->attr_max.dev_attr) < 0 ++ || (cursor->id_length > ++ 0 ? device_create_file(bmc->dev, ++ &cursor->attr_label.dev_attr) < ++ 0 : 0) ++ ) { ++ printk(KERN_INFO ++ "ipmisensors: sysfs file creation failed for SDR %d (%s).\n", ++ cursor->number, cursor->id); ++ kfree(cursor->attr_name); ++ kfree(cursor->attr_max_name); ++ kfree(cursor->attr_min_name); ++ kfree(cursor->attr_label_name); ++ return; ++ } ++ } ++ ++ bmc->alarms_attr.dev_attr.attr.name = "alarms"; ++ bmc->alarms_attr.dev_attr.attr.mode = S_IRUGO; ++ bmc->alarms_attr.dev_attr.attr.owner = THIS_MODULE; ++ bmc->alarms_attr.dev_attr.show = show_alarms; ++ bmc->alarms_attr.dev_attr.store = NULL; ++ bmc->alarms_attr.bmc = bmc; ++ ++ if (device_create_file(bmc->dev, &bmc->alarms_attr.dev_attr) < 0) { ++ printk(KERN_INFO ++ "ipmisensors: Failed to create sysfs entry 'alarms'"); ++ return; ++ } ++ ++ bmc->name_attr.attr.name = "name"; ++ bmc->name_attr.attr.mode = S_IRUGO; ++ bmc->name_attr.attr.owner = THIS_MODULE; ++ bmc->name_attr.show = show_name; ++ ++ if (device_create_file(bmc->dev, &bmc->name_attr) < 0) { ++ printk(KERN_INFO ++ "ipmisensors: Failed to create sysfs entry 'name'"); ++ return; ++ } ++ ++ bmc->update_attr.dev_attr.attr.name = "update_period"; ++ bmc->update_attr.dev_attr.attr.mode = S_IWUSR | S_IRUGO; ++ bmc->update_attr.dev_attr.attr.owner = THIS_MODULE; ++ bmc->update_attr.dev_attr.show = show_update_period; ++ bmc->update_attr.dev_attr.store = store_update_period; ++ bmc->update_attr.bmc = bmc; ++ ++ if (device_create_file(bmc->dev, &bmc->update_attr.dev_attr) < 0) { ++ printk(KERN_INFO ++ "ipmisensors: Failed to create sysfs entry 'update_period'"); ++ return; ++ } ++ ++ printk(KERN_INFO ++ "ipmisensors: registered %d temp, %d volt, %d current, %d fan sensors\n", ++ temps, volts, currs, fans); ++ ++ /* This completes the initialization. We can now kickoff the ++ * periodic update of the bmc sensor's values by scheduling ++ * the first work. ++ */ ++ queue_work(ipmisensors_workqueue, &bmc->update_work.work); ++ ++} ++ ++/** ++ * Process an SDR response message, save the SDRs we like in the sdr ++ * list for the given BMC. ++ * ++ * @bmc: the bmc the message is from ++ * @msg: the IPMI SDR response message ++ */ ++static void ipmisensors_rcv_sdr_msg(struct ipmisensors_bmc_data *bmc, ++ struct kernel_ipmi_msg *msg) ++{ ++ u16 record; ++ int type; ++ int stype; ++ int id_length; ++ int i; ++ int ipmi_ver = 0; ++ unsigned char *data; ++ u8 id[SDR_MAX_UNPACKED_ID_LENGTH]; ++ struct sdrdata *sdr; ++ ++ if (msg->data[0] != 0) { ++ /* cut request in half and try again */ ++ bmc->ipmi_sdr_partial_size /= 2; ++ if (bmc->ipmi_sdr_partial_size < 8) { ++ printk(KERN_INFO ++ "ipmisensors: IPMI buffers too small, giving up\n"); ++ bmc->state = STATE_DONE; ++ return; ++ } ++ printk(KERN_DEBUG ++ "ipmisensors: Reducing SDR request size to %d\n", ++ bmc->ipmi_sdr_partial_size); ++ ++ ipmisensors_get_sdr(bmc, 0, 0, 0); ++ bmc->state = STATE_SDR; ++ return; ++ } ++ if (bmc->ipmi_sdr_partial_size < IPMI_SDR_SIZE) { ++ if (bmc->rx_msg_data_offset == 0) { ++ memcpy(bmc->rx_msg_data, msg->data, ++ bmc->ipmi_sdr_partial_size + 3); ++ bmc->rx_msg_data_offset = ++ bmc->ipmi_sdr_partial_size + 3; ++ } else { ++ memcpy(bmc->rx_msg_data + bmc->rx_msg_data_offset, ++ msg->data + 3, bmc->ipmi_sdr_partial_size); ++ bmc->rx_msg_data_offset += bmc->ipmi_sdr_partial_size; ++ } ++ if (bmc->rx_msg_data_offset > bmc->rx_msg_data[7] + 7) { ++ /* got last chunk */ ++ bmc->rx_msg_data_offset = 0; ++ data = bmc->rx_msg_data; ++ } else { ++ /* get more */ ++ record = ++ (bmc->rx_msg_data[4] << 8) | bmc->rx_msg_data[3]; ++ ipmisensors_get_sdr(bmc, bmc->resid, record, ++ bmc->rx_msg_data_offset - 3); ++ bmc->state = STATE_SDR; ++ return; ++ } ++ } else { ++ /* got it in one chunk */ ++ data = msg->data; ++ } ++ ++ bmc->nextrecord = (data[2] << 8) | data[1]; ++ ++ /* If the ipmi version is 0.9 we have to remap some things. ++ * Yes this is very ugly, but we aren't the ones who ++ * implemented an incomplete spec! ++ */ ++ ipmi_ver = data[5]; ++ ++ type = data[6]; ++ /* known SDR type */ ++ if (type == 1 || type == 2) { ++ stype = data[(ipmi_ver == 0x90 ? 16 : 15)]; ++ /* known sensor type */ ++ if (stype <= STYPE_MAX) { ++ if (data[(ipmi_ver == 0x90 ? 17 : 16)] != 0x01) { ++ if (type == 1) ++ ipmisensors_sprintf(id, &data[51], ++ data[50] >> 6, ++ data[50] & 0x1f); ++ else ++ ipmisensors_sprintf(id, ++ &data[(ipmi_ver == ++ 0x90 ? 30 : ++ 35)], ++ data[(ipmi_ver == ++ 0x90 ? 29 : ++ 34)] >> 6, ++ data[(ipmi_ver == ++ 0x90 ? 29 : ++ 34)] & 0x1f); ++ printk(KERN_INFO ++ "ipmisensors: skipping non-threshold sensor \"%s\"\n", ++ id); ++ } else { ++ /* add entry to sdrd table */ ++ sdr = ipmisensors_new_sdr(); ++ if (!sdr) { ++ printk(KERN_ERR ++ "ipmisensors: could not allocate memory for new SDR"); ++ return; ++ } ++ sdr->bmc = bmc; ++ sdr->stype = stype; ++ sdr->number = data[10]; ++ sdr->capab = data[(ipmi_ver == 0x90 ? 15 : 14)]; ++ sdr->thresh_mask = ++ (((u16) data[(ipmi_ver == 0x90 ? 21 : 22)]) ++ << 8) | data[21]; ++ if (type == 1) { ++ sdr->format = ++ data[(ipmi_ver == ++ 0x90 ? 22 : 24)] >> 6; ++ sdr->linear = ++ data[(ipmi_ver == ++ 0x90 ? 25 : 26)] & 0x7f; ++ sdr->m = ++ data[(ipmi_ver == 0x90 ? 26 : 27)]; ++ sdr->m |= ((u16) ++ (data ++ [(ipmi_ver == ++ 0x90 ? 27 : 28)] ++ & 0xc0)) << 2; ++ if (sdr->m & 0x0200) { ++ /* sign extend */ ++ sdr->m |= 0xfc00; ++ } ++ sdr->b = ++ data[(ipmi_ver == 0x90 ? 28 : 29)]; ++ sdr->b |= ((u16) ++ (data ++ [(ipmi_ver == ++ 0x90 ? 29 : 30)] ++ & 0xc0)) << 2; ++ if (sdr->b & 0x0200) { ++ /* sign extend */ ++ sdr->b |= 0xfc00; ++ } ++ sdr->k = ++ data[(ipmi_ver == 0x90 ? 31 : 32)]; ++ sdr->nominal = ++ data[(ipmi_ver == 0x90 ? 33 : 34)]; ++ for (i = 0; i < SDR_LIMITS; i++) { ++ /* assume readable */ ++ sdr->limits[i] = ++ data[(ipmi_ver == ++ 0x90 ? 40 : 39) + i]; ++ } ++ sdr->string_type = data[50] >> 6; ++ id_length = data[50] & 0x1f; ++ memcpy(sdr->id, &data[51], id_length); ++ sdr->id_length = id_length; ++ } else { ++ sdr->m = 1; ++ sdr->b = 0; ++ sdr->k = 0; ++ sdr->string_type = ++ data[(ipmi_ver == ++ 0x90 ? 29 : 34)] >> 6; ++ id_length = data[34] & 0x1f; ++ if (id_length > 0) { ++ memcpy(sdr->id, ++ &data[(ipmi_ver == ++ 0x90 ? 30 : 35)], ++ id_length); ++ } ++ sdr->id_length = id_length; ++ /* limits?? */ ++ if (ipmi_ver == 0x90) { ++ memcpy(sdr->id, ++ &data[30], id_length); ++ sdr->id_length = id_length; ++ } ++ } ++ ipmisensors_add_sdr(bmc, sdr); ++ } ++ } ++ /* peek at the other SDR types */ ++ } else if (type == 0x10 || type == 0x11 || type == 0x12) { ++ ipmisensors_sprintf(id, data + 19, data[18] >> 6, ++ data[18] & 0x1f); ++ if (type == 0x10) { ++ printk(KERN_INFO ++ "ipmisensors: Generic Device acc=0x%x; slv=0x%x; lun=0x%x; type=0x%x; \"%s\"\n", ++ data[8], data[9], data[10], data[13], id); ++ } else if (type == 0x11) { ++ printk(KERN_INFO ++ "ipmisensors: FRU Device acc=0x%x; slv=0x%x; log=0x%x; ch=0x%x; type=0x%x; \"%s\"\n", ++ data[8], data[9], data[10], data[11], data[13], ++ id); ++ } else { ++ printk(KERN_INFO ++ "ipmisensors: Mgmt Ctllr Device slv=0x%x; \"%s\"\n", ++ data[8], id); ++ } ++ } else if (type == 0x14) { ++ printk(KERN_INFO ++ "ipmisensors: Message Channel Info Records:\n"); ++ for (i = 0; i < 8; i++) { ++ printk(KERN_INFO "ipmisensors: Channel %d info 0x%x\n", ++ i, data[9 + i]); ++ } ++ } else { ++ printk(KERN_INFO "ipmisensors: Skipping SDR type 0x%x\n", type); ++ } ++ if (ipmi_ver != 0x90) { ++ if (bmc->nextrecord >= 6224) { ++ /*YJ stop sensor scan on poweredge 1750 */ ++ bmc->nextrecord = 0xffff; ++ } ++ } ++ ++ if (bmc->nextrecord == 0xFFFF) { ++ if (bmc->sdr_count == 0) { ++ printk(KERN_INFO ++ "ipmisensors: No recognized sensors found.\n"); ++ bmc->state = STATE_DONE; ++ } else { ++ printk(KERN_INFO "ipmisensors: all sensors detected\n"); ++ bmc->state = STATE_SYSTABLE; ++ ++ /* Schedule sysfs build/registration work */ ++ INIT_WORK(&bmc->sysfs_work, ipmisensors_build_sysfs); ++ queue_work(ipmisensors_workqueue, &bmc->sysfs_work); ++ } ++ } else { ++ ipmisensors_get_sdr(bmc, 0, bmc->nextrecord, 0); ++ bmc->state = STATE_SDR; ++ } ++} ++ ++/** ++ * Process incoming messages based on internal state ++ * ++ * @bmc: the bmc the message is from. ++ * @msg: the ipmi message to process. ++ */ ++static void ipmisensors_rcv_msg(struct ipmisensors_bmc_data *bmc, ++ struct kernel_ipmi_msg *msg) ++{ ++ switch (bmc->state) { ++ case STATE_INIT: ++ case STATE_RESERVE: ++ bmc->resid = (((u16) msg->data[2]) << 8) | msg->data[1]; ++ ++ printk(KERN_DEBUG "ipmisensors: Got first resid 0x%.4x\n", ++ bmc->resid); ++ ++ ipmisensors_get_sdr(bmc, 0, 0, 0); ++ bmc->state = STATE_SDR; ++ break; ++ ++ case STATE_SDR: ++ case STATE_SDRPARTIAL: ++ ipmisensors_rcv_sdr_msg(bmc, msg); ++ break; ++ ++ case STATE_READING: ++ ipmisensors_rcv_reading_msg(bmc, msg); ++ break; ++ ++ case STATE_UNCANCEL: ++ bmc->resid = (((u16) msg->data[2]) << 8) | msg->data[1]; ++ ++ printk(KERN_DEBUG "ipmisensors: Got new resid 0x%.4x\n", ++ bmc->resid); ++ ++ bmc->rx_msg_data_offset = 0; ++ ipmisensors_get_sdr(bmc, 0, bmc->nextrecord, 0); ++ bmc->state = STATE_SDR; ++ break; ++ ++ case STATE_DONE: ++ case STATE_SYSTABLE: ++ break; ++ default: ++ bmc->state = STATE_INIT; ++ } ++} ++ ++/** ++ * Callback to handle a received IPMI message from a given BMC. ++ * ++ * @msg: the received message. ++ * @handler_data: a pointer to the particular bmc ipmisensors_bmc_data struct. ++ */ ++static void ipmisensors_msg_handler(struct ipmi_recv_msg *msg, ++ void *user_msg_data) ++{ ++ struct ipmisensors_bmc_data *bmc = ++ (struct ipmisensors_bmc_data *)user_msg_data; ++ ++ if (msg->msg.data[0] != 0) ++ printk(KERN_WARNING ++ "ipmisensors: Error 0x%x on cmd 0x%x/0x%x\n", ++ msg->msg.data[0], msg->msg.netfn, msg->msg.cmd); ++ ++ if (bmc != NULL && ipmisensors_intf_registered(bmc->interface_id)) { ++ if (bmc->state == STATE_SDR && ++ msg->msg.data[0] == IPMI_INVALID_RESERVATION_ID) { ++ /* reservation cancelled, get new resid */ ++ if (++bmc->errorcount > 275) { ++ printk(KERN_ERR ++ "ipmisensors: Too many reservations cancelled, giving up\n"); ++ bmc->state = STATE_DONE; ++ } else { ++ printk(KERN_DEBUG ++ "ipmisensors: resid 0x%04x cancelled, getting new one\n", ++ bmc->resid); ++ ++ ipmisensors_reserve_sdr(bmc); ++ bmc->state = STATE_UNCANCEL; ++ } ++ } else if (msg->msg.data[0] != IPMI_CC_NO_ERROR && ++ msg->msg.data[0] != IPMI_ERR_RETURNING_REQ_BYTES && ++ msg->msg.data[0] != IPMI_ERR_PROVIDING_RESPONSE) { ++ printk(KERN_ERR ++ "ipmisensors: Error 0x%x on cmd 0x%x/0x%x; state = %d; probably fatal.\n", ++ msg->msg.data[0], msg->msg.netfn & 0xfe, ++ msg->msg.cmd, bmc->state); ++ } else { ++ printk(KERN_DEBUG "ipmisensors: received message\n"); ++ ipmisensors_rcv_msg(bmc, &msg->msg); ++ } ++ ++ } else { ++ printk(KERN_WARNING ++ "ipmisensors: Response for non-registered BMC\n"); ++ if (bmc != NULL) ++ printk(KERN_DEBUG "ipmisensors: BMC ID: %d\n", ++ bmc->interface_id); ++ else ++ printk(KERN_DEBUG "ipmisensors: BMC NULL!\n"); ++ } ++ ++ ipmi_free_recv_msg(msg); ++} ++ ++/****** IPMI Interface Initialization ******/ ++ ++/** ++ * Return true if the given ipmi interface has been registered. ++ * ++ * @ipmi_intf: The IPMI interface number. ++ */ ++static int ipmisensors_intf_registered(int ipmi_intf) ++{ ++ int found = 0; ++ struct ipmisensors_bmc_data *cursor, *next; ++ ++ /* find and free the ipmisensors_bmc_data struct */ ++ list_for_each_entry_safe(cursor, next, &driver_data.bmc_data, list) { ++ if (cursor->interface_id == ipmi_intf) { ++ found++; ++ } ++ } ++ ++ return found; ++} ++ ++/** ++ * Return true if the given BMC has been registered. ++ * ++ * @bmc: The BMC device. ++ */ ++static int ipmisensors_bmc_registered(struct device *bmc) ++{ ++ int found = 0; ++ struct ipmisensors_bmc_data *cursor, *next; ++ ++ /* find and free the ipmisensors_bmc_data struct */ ++ list_for_each_entry_safe(cursor, next, &driver_data.bmc_data, list) { ++ if (cursor->dev == bmc) { ++ found++; ++ } ++ } ++ ++ return found; ++} ++ ++/** ++ * Register new IPMI BMC interface. Interface indpendent callback created ++ * for flexibility in adding new types of interface callbacks in future. ++ * ++ * @ipmi_intf: The IPMI interface number. ++ */ ++static void ipmisensors_register_bmc(int ipmi_intf, struct ipmi_addr *address) ++{ ++ int error; ++ ++ /* allocate a new ipmisensors_bmc_data struct */ ++ ++ struct ipmisensors_bmc_data *bmc = (struct ipmisensors_bmc_data *) ++ kmalloc(sizeof(struct ipmisensors_bmc_data), GFP_KERNEL); ++ ++ /* initialize members */ ++ INIT_LIST_HEAD(&bmc->sdrs); ++ bmc->interface_id = ipmi_intf; ++ ++ bmc->address = *address; ++ ++ bmc->sdr_count = 0; ++ bmc->msgid = 0; ++ bmc->ipmi_sdr_partial_size = IPMI_CHUNK_SIZE; ++ bmc->state = STATE_INIT; ++ bmc->errorcount = 0; ++ bmc->rx_msg_data_offset = 0; ++ bmc->dev = ipmi_get_bmcdevice(ipmi_intf); ++ ++ /* default to 3 second min update interval */ ++ bmc->update_period = 3; ++ ++ if (bmc->dev == NULL) { ++ printk(KERN_ERR ++ "ipmisensors: Error, couldn't get BMC device for interface %d\n", ++ bmc->interface_id); ++ kfree(bmc); ++ return; ++ } ++ ++ /* Create IPMI messaging interface user */ ++ error = ipmi_create_user(bmc->interface_id, &driver_data.ipmi_hndlrs, ++ bmc, &bmc->user); ++ if (error < 0) { ++ printk(KERN_ERR ++ "ipmisensors: Error, unable to register user with ipmi interface %d\n", ++ bmc->interface_id); ++ kfree(bmc); ++ return; ++ } ++ ++ /* Register the BMC as a HWMON class device */ ++ bmc->class_dev = hwmon_device_register(bmc->dev); ++ ++ if (IS_ERR(bmc->class_dev)) { ++ printk(KERN_ERR ++ "ipmisensors: Error, unable to register hwmon class device for interface %d\n", ++ bmc->interface_id); ++ kfree(bmc); ++ return; ++ } ++ ++ /* Register the BMC in the driver */ ++ if (ipmisensors_bmc_registered(bmc->dev)) { ++ printk(KERN_ERR ++ "ipmisensors: BMC on interface %d already registered\n", ++ bmc->interface_id); ++ hwmon_device_unregister(bmc->class_dev); ++ kfree(bmc); ++ return; ++ } ++ ++ ipmi_get_version(bmc->user, &bmc->ipmi_version_major, ++ &bmc->ipmi_version_minor); ++ ++ /* finally add the new bmc data to the bmc data list */ ++ list_add_tail(&bmc->list, &driver_data.bmc_data); ++ driver_data.interfaces++; ++ ++ printk(KERN_INFO ++ "ipmisensors: Registered IPMI %d.%d BMC over interface %d\n", ++ bmc->ipmi_version_major, ++ bmc->ipmi_version_minor, bmc->interface_id); ++ ++ /* Send a reserve SDR command to the bmc */ ++ ipmisensors_reserve_sdr(bmc); ++ ++ /* initialize the bmc's update work struct */ ++ INIT_DELAYED_WORK(&bmc->update_work, ipmisensors_update_bmc); ++} ++ ++/** ++ * Callback for when an IPMI BMC is gone. Interface indpendent callback created ++ * for flexibility in adding new types of interface callbacks in future. ++ * ++ * @ipmi_intf: The IPMI interface number. ++ */ ++static void ipmisensors_unregister_bmc(int ipmi_intf) ++{ ++ struct ipmisensors_bmc_data *cursor, *next; ++ ++ /* find and free the ipmisensors_bmc_data struct */ ++ list_for_each_entry_safe(cursor, next, &driver_data.bmc_data, list) { ++ if (cursor->interface_id == ipmi_intf) { ++ list_del(&cursor->list); ++ printk(KERN_DEBUG ++ "ipmisensors: cancelling queued work\n"); ++ /* cancel update work queued for this bmc */ ++ cancel_delayed_work(&cursor->update_work); ++ printk(KERN_DEBUG ++ "ipmisensors: waiting for update to finish\n"); ++ /* wait for readings to finish */ ++ while (cursor->state != STATE_DONE) ; ++ ++ device_remove_file(cursor->dev, ++ &cursor->alarms_attr.dev_attr); ++ device_remove_file(cursor->dev, ++ &cursor->update_attr.dev_attr); ++ hwmon_device_unregister(cursor->class_dev); ++ ipmisensors_sdr_cleanup(cursor); ++ ipmi_destroy_user(cursor->user); ++ ++ printk(KERN_INFO ++ "ipmisensors: Unegistered IPMI interface %d\n", ++ cursor->interface_id); ++ ++ kfree(cursor); ++ driver_data.interfaces--; ++ } ++ } ++ ++} ++ ++/** ++ * Unregister all registered bmcs. ++ */ ++static void ipmisensors_unregister_bmc_all(void) ++{ ++ struct ipmisensors_bmc_data *cursor, *next; ++ ++ /* find and free the ipmisensors_bmc_data struct */ ++ list_for_each_entry_safe(cursor, next, &driver_data.bmc_data, list) { ++ list_del(&cursor->list); ++ ++ /* cancel update work queued for this bmc */ ++ printk(KERN_DEBUG "ipmisensors: cancelling queued work\n"); ++ cancel_delayed_work(&cursor->update_work); ++ ++ printk(KERN_DEBUG ++ "ipmisensors: waiting for update to finish\n"); ++ /* wait for readings to finish */ ++ while (cursor->state != STATE_DONE) ; ++ ++ device_remove_file(cursor->dev, &cursor->alarms_attr.dev_attr); ++ device_remove_file(cursor->dev, &cursor->update_attr.dev_attr); ++ hwmon_device_unregister(cursor->class_dev); ++ ipmisensors_sdr_cleanup(cursor); ++ ipmi_destroy_user(cursor->user); ++ ++ printk(KERN_INFO ++ "ipmisensors: Unegistered IPMI interface %d\n", ++ cursor->interface_id); ++ ++ kfree(cursor); ++ } ++ ++ driver_data.interfaces = 0; ++} ++ ++/** ++ * Callback for when a new IPMI SMI type interface is found. ++ * ++ * @if_num: The IPMI interface number. ++ */ ++static void ipmisensors_new_smi(int if_num, struct device *dev) ++{ ++ struct ipmi_addr smi_address = { ++ IPMI_SYSTEM_INTERFACE_ADDR_TYPE, ++ IPMI_BMC_CHANNEL, ++ {0}, ++ }; ++ ++ /* calls the generic new interface function */ ++ ipmisensors_register_bmc(if_num, &smi_address); ++} ++ ++/** ++ * Callback for when an exisiting IPMI SMI type interface is gone. ++ * ++ * @if_num: The IPMI interface number. ++ */ ++static void ipmisensors_smi_gone(int if_num) ++{ ++ if (driver_data.interfaces > 0) { ++ ipmisensors_unregister_bmc(if_num); ++ } ++} ++ ++/** ++ * Initialize the module. ++ */ ++static int __init ipmisensors_init(void) ++{ ++ int error; ++ printk(KERN_INFO "ipmisensors - IPMI BMC sensors interface\n"); ++ ++ /* init cache managers */ ++ driver_data.sdrdata_cache = ++ kmem_cache_create("ipmisensors_sdrdata", sizeof(struct sdrdata), 0, ++ 0, NULL, NULL); ++ driver_data.sysfsattr_cache = ++ kmem_cache_create("ipmisensors_sysfsattr", ++ sizeof(struct ipmisensors_device_attribute), 0, 0, ++ NULL, NULL); ++ ++ if (!driver_data.sdrdata_cache || !driver_data.sysfsattr_cache) { ++ if (driver_data.sdrdata_cache) ++ kmem_cache_destroy(driver_data.sdrdata_cache); ++ if (driver_data.sysfsattr_cache) ++ kmem_cache_destroy(driver_data.sysfsattr_cache); ++ return -ENOMEM; ++ } ++ ++ /* register IPMI interface callback(s) */ ++ error = ipmi_smi_watcher_register(&driver_data.smi_watcher); ++ if (error) { ++ printk(KERN_WARNING ++ "ipmisensors: can't register smi watcher\n"); ++ return error; ++ } ++ ++ /* create work queue, keep it simple, single-threaded */ ++ ipmisensors_workqueue = ++ create_singlethread_workqueue("ipmisensors_workqueue"); ++ ++ return 0; ++} ++ ++/** ++ * Cleanup ++ */ ++static void ipmisensors_cleanup(void) ++{ ++ /* start cleanup */ ++ cleanup = 1; ++ ++ /* unregister bmcs */ ++ printk(KERN_DEBUG "ipmisensors: unregister bmcs\n"); ++ ipmi_smi_watcher_unregister(&driver_data.smi_watcher); ++ ipmisensors_unregister_bmc_all(); ++ ++ /* flush & destroy work queue */ ++ printk(KERN_DEBUG "ipmisensors: destroy workqueue\n"); ++ flush_workqueue(ipmisensors_workqueue); ++ destroy_workqueue(ipmisensors_workqueue); ++ ++ /* remove cache managers */ ++ if (driver_data.sdrdata_cache) ++ kmem_cache_destroy(driver_data.sdrdata_cache); ++ if (driver_data.sysfsattr_cache) ++ kmem_cache_destroy(driver_data.sysfsattr_cache); ++} ++ ++/** ++ * Cleanup and exit the module ++ */ ++static void __exit ipmisensors_exit(void) ++{ ++ ipmisensors_cleanup(); ++ printk(KERN_DEBUG "ipmisensors: cleanup finished\n"); ++} ++ ++MODULE_AUTHOR("Yani Ioannou <yani.ioannou@gmail.com>"); ++MODULE_DESCRIPTION("IPMI BMC sensors"); ++MODULE_LICENSE("GPL"); ++ ++module_init(ipmisensors_init); ++module_exit(ipmisensors_exit); +diff -rduNp linux-2.6.20.3.orig/drivers/hwmon/ipmisensors.h linux-2.6.20.3/drivers/hwmon/ipmisensors.h +--- linux-2.6.20.3.orig/drivers/hwmon/ipmisensors.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.20.3/drivers/hwmon/ipmisensors.h 2007-03-14 14:41:23.000000000 +0100 +@@ -0,0 +1,240 @@ ++/* ++ * ipmisensors.h - lm_sensors interface to IPMI sensors. ++ * ++ * Copyright (C) 2004-2006 Yani Ioannou <yani.ioannou@gmail.com> ++ * ++ * Adapted from bmcsensors (lm-sensors for linux 2.4) ++ * bmcsensors (C) Mark D. Studebaker <mdsxyz123@yahoo.com> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License as published by ++ * the Free Software Foundation; either version 2 of the License, or ++ * (at your option) any later version. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ * ++ * You should have received a copy of the GNU General Public License ++ * along with this program; if not, write to the Free Software ++ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. ++ */ ++ ++#include <linux/ipmi.h> ++#include <linux/list.h> ++#include <linux/slab.h> ++#include <linux/workqueue.h> ++ ++/* SDR defs */ ++#define STYPE_TEMP 0x01 ++#define STYPE_VOLT 0x02 ++#define STYPE_CURR 0x03 ++#define STYPE_FAN 0x04 ++ ++#define SDR_LIMITS 8 ++#define SDR_MAX_ID_LENGTH 16 ++#define SDR_MAX_UNPACKED_ID_LENGTH ((SDR_MAX_ID_LENGTH * 4 / 3) + 2) ++ ++/* the last sensor type we are interested in */ ++#define STYPE_MAX 4 ++ ++#define IPMI_SDR_SIZE 67 ++#define IPMI_CHUNK_SIZE 16 ++ ++#define MAX_FILENAME_LENGTH 30 ++ ++struct ipmisensors_device_attribute { ++ struct device_attribute dev_attr; ++ struct sdrdata *sdr; ++}; ++#define to_ipmisensors_dev_attr(_dev_attr) \ ++ container_of(_dev_attr, struct ipmisensors_device_attribute, dev_attr) ++ ++#define IPMISENSORS_DEVICE_ATTR(_name,_mode,_show,_store,_index) \ ++struct ipmisensors_attribute sensor_dev_attr_##_name = { \ ++ .dev_attr = __ATTR(_name,_mode,_show,_store), \ ++ .index = _index, \ ++} ++ ++struct ipmisensors_bmc_device_attribute { ++ struct device_attribute dev_attr; ++ struct ipmisensors_bmc_data *bmc; ++}; ++#define to_ipmisensors_bmc_dev_attr(_dev_attr) \ ++ container_of(_dev_attr, struct ipmisensors_bmc_device_attribute, dev_attr) ++ ++/** ++ * &struct_sdrdata stores the IPMI Sensor Data Record (SDR) data, as recieved from the BMC, along with the corresponding sysfs attributes ++ */ ++struct sdrdata { ++ struct list_head list; ++ /* retrieved from SDR, not expected to change */ ++ /* Sensor Type Code */ ++ u8 stype; ++ u8 number; ++ /* Sensor Capability Code */ ++ u8 capab; ++ u16 thresh_mask; ++ u8 format; ++ u8 linear; ++ s16 m; ++ s16 b; ++ u8 k; ++ u8 nominal; ++ u8 limits[SDR_LIMITS]; ++ /* index into limits for reported upper and lower limit */ ++ int lim1, lim2; ++ u8 lim1_write, lim2_write; ++ u8 string_type; ++ u8 id_length; ++ u8 id[SDR_MAX_ID_LENGTH]; ++ /* retrieved from reading */ ++ u8 reading; ++ u8 status; ++ u8 thresholds; ++ /* sensor's bmc */ ++ struct ipmisensors_bmc_data *bmc; ++ /* sysfs entries */ ++ struct ipmisensors_device_attribute attr; ++ char *attr_name; ++ struct ipmisensors_device_attribute attr_min; ++ char *attr_min_name; ++ struct ipmisensors_device_attribute attr_max; ++ char *attr_max_name; ++ struct ipmisensors_device_attribute attr_label; ++ char *attr_label_name; ++ ++}; ++ ++/** ++ * &struct_ipmisensors_data stores the data for the ipmisensors driver. ++ */ ++struct ipmisensors_data { ++ /* Driver struct */ ++ char *driver_name; ++ ++ /* Linked list of ipmisensors_bmc_data structs, one for each BMC */ ++ struct list_head bmc_data; ++ ++ /* Number of ipmi interfaces (and hence ipmisensors_data structs). */ ++ int interfaces; ++ ++ /* IPMI kernel interface - SMI watcher */ ++ struct ipmi_smi_watcher smi_watcher; ++ ++ /* IPMI kernel interface - user handlers */ ++ struct ipmi_user_hndl ipmi_hndlrs; ++ ++ /* Cache manager for sdrdata cache */ ++ struct kmem_cache *sdrdata_cache; ++ ++ /* Cache manager for ipmi_sensor_device_attribute cache */ ++ struct kmem_cache *sysfsattr_cache; ++}; ++ ++/** ++ * &states: enumeration of state codes for a bmc specific ipmisensors ++ */ ++enum states { ++ STATE_INIT, ++ STATE_RESERVE, ++ STATE_SDR, ++ STATE_SDRPARTIAL, ++ STATE_READING, ++ STATE_UNCANCEL, ++ STATE_SYSTABLE, ++ STATE_DONE ++}; ++ ++/** ++ * &struct_ipmisensors_bmc_data stores the data for a particular IPMI BMC. ++ */ ++struct ipmisensors_bmc_data { ++ struct list_head list; ++ ++ /* The IPMI interface number */ ++ int interface_id; ++ ++ /* The IPMI address */ ++ struct ipmi_addr address; ++ ++ /* List of sdrdata structs (sdrs) recieved from the BMC */ ++ struct list_head sdrs; ++ ++ /* Count of the number of sdrs stored in the sdr list */ ++ int sdr_count; ++ ++ /* next message id */ ++ int msgid; ++ ++ /* The ipmi interface 'user' used to access this particular bmc */ ++ ipmi_user_t user; ++ ++ /* BMC IPMI Version (major) */ ++ unsigned char ipmi_version_major; ++ ++ /* BMC IPMI Version (minor) */ ++ unsigned char ipmi_version_minor; ++ ++ /* The size of the SDR request message */ ++ int ipmi_sdr_partial_size; ++ ++ /* transmit message buffer */ ++ struct kernel_ipmi_msg tx_message; ++ ++ /* ipmi transmited data buffer */ ++ unsigned char tx_msg_data[IPMI_MAX_MSG_LENGTH + 50]; /* why the +50 in bmcsensors? */ ++ ++ /* ipmi recieved data buffer */ ++ unsigned char rx_msg_data[IPMI_MAX_MSG_LENGTH + 50]; ++ ++ /* current recieve buffer offset */ ++ int rx_msg_data_offset; ++ ++ /* The id of then next SDR record to read during update cycle */ ++ u16 nextrecord; ++ ++ /* BMC SDR Reservation ID */ ++ u16 resid; ++ ++ /* Alarm status */ ++ u8 alarms; ++ ++ /* The cumalative error count for this bmc */ ++ int errorcount; ++ ++ /* The current state of this bmc w.r.t. ipmisensors (see enum states) */ ++ int state; ++ ++ /* The current sdr for which a reading is pending */ ++ struct sdrdata *current_sdr; ++ ++ /* The BMC's device struct */ ++ struct device *dev; ++ ++ /* hwmon class device */ ++ struct class_device *class_dev; ++ ++ /* hwmon device name */ ++ struct device_attribute name_attr; ++ ++ /* alarms attribute */ ++ struct ipmisensors_bmc_device_attribute alarms_attr; ++ ++ /* update_period attribute */ ++ struct ipmisensors_bmc_device_attribute update_attr; ++ ++ /* lower bound on time between updates (in seconds) */ ++ unsigned int update_period; ++ ++ /* semaphore used to do a headcount of the SDR readings we are waiting ++ * on in a given bmc update */ ++ struct semaphore update_semaphore; ++ ++ /* bmc's work struct for updating sensors */ ++ struct delayed_work update_work; ++ ++ /* bmc's work struct for building the sysfs workqueue */ ++ struct work_struct sysfs_work; ++}; +diff -rduNp linux-2.6.20.3.orig/include/linux/ipmi.h linux-2.6.20.3/include/linux/ipmi.h +--- linux-2.6.20.3.orig/include/linux/ipmi.h 2007-03-13 19:27:08.000000000 +0100 ++++ linux-2.6.20.3/include/linux/ipmi.h 2007-03-14 14:23:02.000000000 +0100 +@@ -300,6 +300,9 @@ int ipmi_create_user(unsigned int + safe, too. */ + int ipmi_destroy_user(ipmi_user_t user); + ++/* Get the IPMI BMC's device struct */ ++struct device *ipmi_get_bmcdevice(int ipmi_intf); ++ + /* Get the IPMI version of the BMC we are talking to. */ + void ipmi_get_version(ipmi_user_t user, + unsigned char *major, +diff -rduNp linux-2.6.20.3.orig/include/linux/ipmi_msgdefs.h linux-2.6.20.3/include/linux/ipmi_msgdefs.h +--- linux-2.6.20.3.orig/include/linux/ipmi_msgdefs.h 2007-03-13 19:27:08.000000000 +0100 ++++ linux-2.6.20.3/include/linux/ipmi_msgdefs.h 2007-03-14 14:23:02.000000000 +0100 +@@ -45,6 +45,7 @@ + + #define IPMI_NETFN_APP_REQUEST 0x06 + #define IPMI_NETFN_APP_RESPONSE 0x07 ++#define IPMI_GET_DEVICE_GUID_CMD 0x08 + #define IPMI_GET_DEVICE_ID_CMD 0x01 + #define IPMI_COLD_RESET_CMD 0x02 + #define IPMI_WARM_RESET_CMD 0x03 +@@ -57,6 +58,11 @@ + #define IPMI_GET_BMC_GLOBAL_ENABLES_CMD 0x2f + #define IPMI_READ_EVENT_MSG_BUFFER_CMD 0x35 + #define IPMI_GET_CHANNEL_INFO_CMD 0x42 ++#define IPMI_RESERVE_SDR 0x22 ++#define IPMI_GET_SDR 0x23 ++#define IPMI_GET_SENSOR_STATE_READING 0x2D ++#define IPMI_SET_SENSOR_HYSTERESIS 0x24 ++#define IPMI_SET_SENSOR_THRESHOLD 0x26 + + #define IPMI_NETFN_STORAGE_REQUEST 0x0a + #define IPMI_NETFN_STORAGE_RESPONSE 0x0b +@@ -79,10 +85,13 @@ + #define IPMI_NODE_BUSY_ERR 0xc0 + #define IPMI_INVALID_COMMAND_ERR 0xc1 + #define IPMI_TIMEOUT_ERR 0xc3 ++#define IPMI_INVALID_RESERVATION_ID 0xc5 + #define IPMI_ERR_MSG_TRUNCATED 0xc6 + #define IPMI_REQ_LEN_INVALID_ERR 0xc7 + #define IPMI_REQ_LEN_EXCEEDED_ERR 0xc8 + #define IPMI_NOT_IN_MY_STATE_ERR 0xd5 /* IPMI 2.0 */ ++#define IPMI_ERR_RETURNING_REQ_BYTES 0xca ++#define IPMI_ERR_PROVIDING_RESPONSE 0xce + #define IPMI_LOST_ARBITRATION_ERR 0x81 + #define IPMI_BUS_ERR 0x82 + #define IPMI_NAK_ON_WRITE_ERR 0x83 diff --git a/toolchain/kernel-headers/ipmi/linux-2.6.21.5-007-ipmisensors-20070314-1214.patch b/toolchain/kernel-headers/ipmi/linux-2.6.21.5-007-ipmisensors-20070314-1214.patch new file mode 100644 index 000000000..aca57c37b --- /dev/null +++ b/toolchain/kernel-headers/ipmi/linux-2.6.21.5-007-ipmisensors-20070314-1214.patch @@ -0,0 +1,1914 @@ +diff -rduNp linux-2.6.20.3.orig/drivers/char/ipmi/ipmi_msghandler.c linux-2.6.20.3/drivers/char/ipmi/ipmi_msghandler.c +--- linux-2.6.20.3.orig/drivers/char/ipmi/ipmi_msghandler.c 2007-03-13 19:27:08.000000000 +0100 ++++ linux-2.6.20.3/drivers/char/ipmi/ipmi_msghandler.c 2007-03-14 14:23:02.000000000 +0100 +@@ -1954,6 +1954,24 @@ static void remove_proc_entries(ipmi_smi + #endif /* CONFIG_PROC_FS */ + } + ++/* ++ * Retrieves the bmc_device struct for a given ipmi interface number (or NULL if none). ++ */ ++struct device *ipmi_get_bmcdevice(int if_num) ++{ ++ ipmi_smi_t intf; ++ mutex_lock(&ipmi_interfaces_mutex); ++ list_for_each_entry_rcu(intf, &ipmi_interfaces, link) { ++ if (intf->intf_num == if_num){ ++ mutex_unlock(&ipmi_interfaces_mutex); ++ return &intf->bmc->dev->dev; ++ } ++ } ++ mutex_unlock(&ipmi_interfaces_mutex); ++ ++ return NULL; ++} ++ + static int __find_bmc_guid(struct device *dev, void *data) + { + unsigned char *id = data; +@@ -4183,3 +4201,4 @@ EXPORT_SYMBOL(ipmi_get_my_LUN); + EXPORT_SYMBOL(ipmi_smi_add_proc_entry); + EXPORT_SYMBOL(ipmi_user_set_run_to_completion); + EXPORT_SYMBOL(ipmi_free_recv_msg); ++EXPORT_SYMBOL(ipmi_get_bmcdevice); +diff -rduNp linux-2.6.20.3.orig/drivers/hwmon/Kconfig linux-2.6.20.3/drivers/hwmon/Kconfig +--- linux-2.6.20.3.orig/drivers/hwmon/Kconfig 2007-03-13 19:27:08.000000000 +0100 ++++ linux-2.6.20.3/drivers/hwmon/Kconfig 2007-03-14 14:23:02.000000000 +0100 +@@ -218,6 +218,16 @@ config SENSORS_GL520SM + This driver can also be built as a module. If so, the module + will be called gl520sm. + ++config SENSORS_IPMI ++ tristate "IPMI Hardware Monitoring Support" ++ depends on HWMON && IPMI_HANDLER && EXPERIMENTAL ++ help ++ If you say yes here you get support for sensors monitored by ++ an IPMI baseboard management controller (BMC). ++ ++ This driver can also be built as a module. If so, the module ++ will be called ipmisensors. ++ + config SENSORS_IT87 + tristate "ITE IT87xx and compatibles" + depends on HWMON && I2C +diff -rduNp linux-2.6.20.3.orig/drivers/hwmon/Makefile linux-2.6.20.3/drivers/hwmon/Makefile +--- linux-2.6.20.3.orig/drivers/hwmon/Makefile 2007-03-13 19:27:08.000000000 +0100 ++++ linux-2.6.20.3/drivers/hwmon/Makefile 2007-03-14 14:23:02.000000000 +0100 +@@ -28,6 +28,7 @@ obj-$(CONFIG_SENSORS_FSCPOS) += fscpos.o + obj-$(CONFIG_SENSORS_GL518SM) += gl518sm.o + obj-$(CONFIG_SENSORS_GL520SM) += gl520sm.o + obj-$(CONFIG_SENSORS_HDAPS) += hdaps.o ++obj-$(CONFIG_SENSORS_IPMI) += ipmisensors.o + obj-$(CONFIG_SENSORS_IT87) += it87.o + obj-$(CONFIG_SENSORS_K8TEMP) += k8temp.o + obj-$(CONFIG_SENSORS_LM63) += lm63.o +diff -rduNp linux-2.6.20.3.orig/drivers/hwmon/ipmisensors.c linux-2.6.20.3/drivers/hwmon/ipmisensors.c +--- linux-2.6.20.3.orig/drivers/hwmon/ipmisensors.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.20.3/drivers/hwmon/ipmisensors.c 2007-03-14 14:44:42.000000000 +0100 +@@ -0,0 +1,1552 @@ ++/* ++ * ipmisensors.c - lm-sensors/hwmon interface to IPMI sensors. ++ * ++ * Copyright (C) 2004-2006 Yani Ioannou <yani.ioannou@gmail.com> ++ * ++ * Adapted from bmcsensors (lm-sensors for linux 2.4) ++ * bmcsensors (C) Mark D. Studebaker <mdsxyz123@yahoo.com> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License as published by ++ * the Free Software Foundation; either version 2 of the License, or ++ * (at your option) any later version. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ * ++ * You should have received a copy of the GNU General Public License ++ * along with this program; if not, write to the Free Software ++ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. ++ */ ++ ++#include <linux/init.h> ++#include <linux/module.h> ++#include <linux/param.h> ++#include <linux/hwmon.h> ++#include <linux/list.h> ++#include <linux/slab.h> ++#include <linux/device.h> ++#include <linux/hwmon.h> ++ ++#include "ipmisensors.h" ++ ++/****** Function Prototypes ******/ ++static void ipmisensors_send_message(struct ipmisensors_bmc_data *bmc, ++ long msgid, struct kernel_ipmi_msg *msg); ++static void ipmisensors_reserve_sdr(struct ipmisensors_bmc_data *bmc); ++static void ipmisensors_get_sdr(struct ipmisensors_bmc_data *bmc, u16 res_id, ++ u16 record, u8 offset); ++static void ipmisensors_set_sensor_threshold(struct ipmisensors_bmc_data *bmc, ++ u8 number, int value, ++ int lim_index); ++static void ipmisensors_get_reading(struct ipmisensors_bmc_data *bmc, ++ struct sdrdata *sdr); ++static void ipmisensors_msg_handler(struct ipmi_recv_msg *msg, ++ void *user_msg_data); ++static int ipmisensors_intf_registered(int ipmi_intf); ++static int ipmisensors_bmc_registered(struct device *bmc); ++static void ipmisensors_register_bmc(int ipmi_intf, struct ipmi_addr *address); ++static void ipmisensors_unregister_bmc(int ipmi_intf); ++static void ipmisensors_unregister_bmc_all(void); ++static void ipmisensors_new_smi(int if_num, struct device *dev); ++static void ipmisensors_smi_gone(int if_num); ++static void ipmisensors_update_bmc(struct work_struct *); ++static void ipmisensors_cleanup(void); ++ ++/****** Static Vars ******/ ++ ++/* set when module is being removed */ ++static int cleanup = 0; ++ ++/* ipmisensors driver data */ ++static struct ipmisensors_data driver_data = { ++ .driver_name = "bmc", ++ .bmc_data = LIST_HEAD_INIT(driver_data.bmc_data), ++ .interfaces = 0, ++ .smi_watcher = { ++ .owner = THIS_MODULE, ++ .new_smi = ipmisensors_new_smi, ++ .smi_gone = ipmisensors_smi_gone, ++ }, ++ .ipmi_hndlrs = { ++ .ipmi_recv_hndl = ipmisensors_msg_handler, ++ }, ++}; ++ ++/* sensor refresh workqueue */ ++static struct workqueue_struct *ipmisensors_workqueue; ++ ++/****** SDR List Functions ******/ ++/** ++ * Creates a new sdrdata struct, or returns NULL if insufficient memory. ++ */ ++static struct sdrdata *ipmisensors_new_sdr(void) ++{ ++ struct sdrdata *sdr; ++ ++ sdr = kmem_cache_alloc(driver_data.sdrdata_cache, GFP_ATOMIC); ++ if (sdr) { ++ memset(sdr, 0, sizeof(struct sdrdata)); ++ } else { ++ printk(KERN_ERR ++ "ipmisensors: Couldn't allocate memory for new SDR\n"); ++ } ++ ++ return sdr; ++} ++ ++/** ++ * Adds the given sdrdata struct to the given bmc's SDR list. ++ * ++ * @bmc: the bmc to send the message to. ++ */ ++static inline void ipmisensors_add_sdr(struct ipmisensors_bmc_data *bmc, ++ struct sdrdata *sdr) ++{ ++ list_add(&sdr->list, &bmc->sdrs); ++ printk(KERN_DEBUG ++ "ipmisensors: SDR %d: type 0x%02x (%s)\n", ++ bmc->sdr_count, sdr->stype, sdr->id); ++ bmc->sdr_count++; ++} ++ ++/** ++ * Cleanup the sdr list for the given BMC. ++ * ++ * @bmc: the bmc to send the message to. ++ */ ++static void ipmisensors_sdr_cleanup(struct ipmisensors_bmc_data *bmc) ++{ ++ struct sdrdata *cursor, *next; ++ ++ /* find and free each sdr data struct */ ++ list_for_each_entry_safe(cursor, next, &bmc->sdrs, list) { ++ device_remove_file(bmc->dev, &cursor->attr.dev_attr); ++ device_remove_file(bmc->dev, &cursor->attr_min.dev_attr); ++ device_remove_file(bmc->dev, &cursor->attr_max.dev_attr); ++ device_remove_file(bmc->dev, &cursor->attr_label.dev_attr); ++ ++ kfree(cursor->attr_name); ++ kfree(cursor->attr_max_name); ++ kfree(cursor->attr_min_name); ++ kfree(cursor->attr_label_name); ++ ++ list_del(&cursor->list); ++ kmem_cache_free(driver_data.sdrdata_cache, cursor); ++ } ++} ++ ++/* worker function for workqueue ipmisensors_workqueue */ ++static void ipmisensors_update_bmc(struct work_struct *work) ++{ ++ struct ipmisensors_bmc_data *bmc = container_of(work, struct ipmisensors_bmc_data, update_work.work); ++ ++ /* don't start an update cycle if one already in progress */ ++ if (bmc->state != STATE_READING) { ++ struct sdrdata *cursor, *next; ++ bmc->state = STATE_READING; ++ printk(KERN_DEBUG "ipmisensors: starting update\n"); ++ ++ /* init semaphore to 1 for update cycle */ ++ sema_init(&bmc->update_semaphore, 1); ++ ++ /* update each sdr reading */ ++ list_for_each_entry_safe(cursor, next, &bmc->sdrs, list) { ++ ipmisensors_get_reading(bmc, cursor); ++ } ++ } ++ ++ /* wait for readings (need timeout?) */ ++ down_interruptible(&bmc->update_semaphore); ++ ++ printk(KERN_DEBUG "ipmisensors: update complete\n"); ++ ++ bmc->state = STATE_DONE; ++ ++ /* if the module isn't cleaning up, schedule another update */ ++ if (!cleanup) ++ queue_delayed_work(ipmisensors_workqueue, &bmc->update_work, ++ bmc->update_period * HZ); ++} ++ ++/****** IPMI Message Sending ******/ ++ ++/** ++ * Send a message to the IPMI BMC ++ * ++ * @bmc: the bmc to send the message to. ++ * @msgid: the message id to use. ++ * @msg: the ipmi message structure. ++ */ ++static void ipmisensors_send_message(struct ipmisensors_bmc_data *bmc, ++ long msgid, struct kernel_ipmi_msg *msg) ++{ ++ if (msg->data == NULL) ++ printk(KERN_DEBUG "ipmisensors: Send 0x%x\n", msg->cmd); ++ else ++ printk(KERN_DEBUG "ipmisensors: Send 0x%x 0x%x 0x%x\n", ++ msg->cmd, msg->data[0], msg->data[1]); ++ ++ /* This should be ipmi_request, but Corey had to remove ++ * that due to it being unused at the moment, as soon as ++ * this makes it into the kernel we should request it be re-instated. ++ */ ++ ipmi_request_settime(bmc->user, &bmc->address, msgid, msg, bmc, 0, ++ -1, 0); ++} ++ ++/** ++ * Compose and send a "reserve SDR" message ++ * ++ * @bmc: the bmc to send the message to. ++ */ ++static void ipmisensors_reserve_sdr(struct ipmisensors_bmc_data *bmc) ++{ ++ bmc->tx_message.netfn = IPMI_NETFN_STORAGE_REQUEST; ++ bmc->tx_message.cmd = IPMI_RESERVE_SDR; ++ bmc->tx_message.data_len = 0; ++ bmc->tx_message.data = NULL; ++ ++ ipmisensors_send_message(bmc, bmc->msgid++, &bmc->tx_message); ++} ++ ++/** ++ * Componse and send a "get SDR" message ++ * ++ * @bmc: the bmc to send the message to. ++ * @res_id: ++ * @record: ++ * @offset: ++ */ ++static void ipmisensors_get_sdr(struct ipmisensors_bmc_data *bmc, u16 res_id, ++ u16 record, u8 offset) ++{ ++ printk(KERN_DEBUG "ipmisensors: Get SDR 0x%x 0x%x 0x%x\n", ++ res_id, record, offset); ++ bmc->tx_message.netfn = IPMI_NETFN_STORAGE_REQUEST; ++ bmc->tx_message.cmd = IPMI_GET_SDR; ++ bmc->tx_message.data_len = 6; ++ bmc->tx_message.data = bmc->tx_msg_data; ++ bmc->tx_msg_data[0] = res_id & 0xff; ++ bmc->tx_msg_data[1] = res_id >> 8; ++ bmc->tx_msg_data[2] = record & 0xff; ++ bmc->tx_msg_data[3] = record >> 8; ++ bmc->tx_msg_data[4] = offset; ++ bmc->tx_msg_data[5] = bmc->ipmi_sdr_partial_size; ++ ++ ipmisensors_send_message(bmc, bmc->msgid++, &bmc->tx_message); ++} ++ ++/** ++ * Compose and send a "set sensor threshold" message ++ * ++ * @bmc: the bmc to send the message to. ++ * @id: the ipmi id number of the sensor. ++ * @value: the new value for the threshold. ++ * @lim_index: the index in the lim[] array for which this value applies. ++ */ ++static void ipmisensors_set_sensor_threshold(struct ipmisensors_bmc_data *bmc, ++ u8 number, int value, ++ int lim_index) ++{ ++ int i; ++ ++ printk(KERN_DEBUG "ipmisensors: Set SDR Threshold %d %d %d\n", ++ number, value, lim_index); ++ bmc->tx_message.netfn = IPMI_NETFN_STORAGE_REQUEST; ++ bmc->tx_message.cmd = IPMI_SET_SENSOR_THRESHOLD; ++ bmc->tx_message.data_len = 8; ++ bmc->tx_message.data = bmc->tx_msg_data; ++ bmc->tx_msg_data[0] = number & 0xff; ++ bmc->tx_msg_data[1] = 0x01 << lim_index; ++ ++ if (lim_index > 5 || lim_index < 0) { ++ printk(KERN_INFO ++ "ipmisensors: Error - ipmisensors_set_sensor_threshold given invalid lim_index\n"); ++ return; ++ } ++ ++ for (i = 2; i < 8; i++) ++ bmc->tx_msg_data[i] = 0x00; ++ ++ bmc->tx_msg_data[lim_index] = value && 0xff; ++ ++ ipmisensors_send_message(bmc, bmc->msgid++, &bmc->tx_message); ++} ++ ++/** ++ * Compose and send a "get sensor reading" message for the given sdr. ++ * ++ * @bmc: the bmc to send the message to. ++ * @sdr: the sdr of the sensor to get the reading for. ++ */ ++static void ipmisensors_get_reading(struct ipmisensors_bmc_data *bmc, ++ struct sdrdata *sdr) ++{ ++ bmc->tx_message.netfn = IPMI_NETFN_SENSOR_EVENT_REQUEST; ++ bmc->tx_message.cmd = IPMI_GET_SENSOR_STATE_READING; ++ bmc->tx_message.data_len = 1; ++ bmc->tx_message.data = bmc->tx_msg_data; ++ bmc->tx_msg_data[0] = sdr->number; ++ bmc->current_sdr = sdr; ++ ++ ipmisensors_send_message(bmc, bmc->msgid++, &bmc->tx_message); ++ down_interruptible(&bmc->update_semaphore); ++} ++ ++/****** IPMI Message Receiving ******/ ++ ++/** ++ * Process an sensor reading response message. ++ * ++ * @bmc: the bmc the message is from ++ * @msg: the IPMI SDR response message ++ */ ++static void ipmisensors_rcv_reading_msg(struct ipmisensors_bmc_data *bmc, ++ struct kernel_ipmi_msg *msg) ++{ ++ struct sdrdata *sdr = bmc->current_sdr; ++ ++ if (sdr == NULL) { ++ printk(KERN_ERR ++ "ipmisensors: Error ipmisensors_rcv_reading with NULL sdr\n"); ++ return; ++ } ++ ++ sdr->reading = msg->data[1]; ++ sdr->status = msg->data[2]; ++ sdr->thresholds = msg->data[3]; ++ ++ printk(KERN_DEBUG "ipmisensors: sensor %d (type %d) reading %d\n", ++ sdr->number, sdr->stype, msg->data[1]); ++ ++ up(&bmc->update_semaphore); ++} ++ ++/** ++ * Unpack based on string type, convert to normal, null terminate. ++ */ ++static void ipmisensors_sprintf(u8 * to, u8 * from, u8 type, u8 length) ++{ ++ static const u8 *bcdplus = "0123456789 -.:,_"; ++ int i; ++ ++ switch (type) { ++ case 0: /* unicode */ ++ for (i = 0; i < length; i++) ++ *to++ = (*from++ & 0x7f); ++ *to = 0; ++ break; ++ case 1: /* BCD Plus */ ++ for (i = 0; i < length; i++) ++ *to++ = bcdplus[*from++ & 0x0f]; ++ *to = 0; ++ break; ++ case 2: /* packed ascii *//* if not a mult. of 3 this will run over */ ++ for (i = 0; i < length; i += 3) { ++ *to++ = *from & 0x3f; ++ *to++ = *from >> 6 | ((*(from+1) & 0xf) << 2); ++ from++; ++ *to++ = *from >> 4 | ((*(from+1) & 0x3) << 4); ++ from++; ++ *to++ = (*from++ >> 2) & 0x3f; ++ } ++ *to = 0; ++ break; ++ case 3: /* normal */ ++ if (length > 1) ++ memcpy(to, from, length); ++ to[length] = 0; ++ break; ++ } ++} ++ ++/* IPMI V1.5 Section 30 */ ++static const int exps[] = ++ { 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000 }; ++ ++/* Return 0 for fan, 2 for temp, 3 for voltage ++ We could make it variable based on the accuracy (= log10(m * 10**k2)); ++ this would work for /proc output, however libsensors resolution ++ is statically set in lib/chips.c */ ++static int decplaces(struct sdrdata *sd) ++{ ++ switch (sd->stype) { ++ case STYPE_TEMP: ++ return 2; ++ case STYPE_CURR: ++ case STYPE_VOLT: ++ return 3; ++ case STYPE_FAN: ++ default: ++ return 0; ++ } ++} ++ ++/* convert a raw value to a reading. IMPI V1.5 Section 30 */ ++static long conv_val(int value, struct sdrdata *sd) ++{ ++ u8 k1, k2; ++ long r; ++ ++ r = value * sd->m; ++ k1 = sd->k & 0x0f; ++ k2 = sd->k >> 4; ++ if (k1 < 8) ++ r += sd->b * exps[k1]; ++ else ++ r += sd->b / exps[16 - k1]; ++ r *= exps[decplaces(sd)]; ++ if (k2 < 8) { ++ if (sd->linear != 7) ++ r *= exps[k2]; ++ else ++ /* this will always truncate to 0: r = 1 / (exps[k2] * r); */ ++ r = 0; ++ } else { ++ if (sd->linear != 7) ++ r /= exps[16 - k2]; ++ else { ++ if (r != 0) ++ /* 1 / x * 10 ** (-m) == 10 ** m / x */ ++ r = exps[16 - k2] / r; ++ else ++ r = 0; ++ } ++ } ++ ++ return r; ++} ++ ++static const char *threshold_text[] = { ++ "upper non-recoverable threshold", ++ "upper critical threshold", ++ "upper non-critical threshold", ++ "lower non-recoverable threshold", ++ "lower critical threshold", ++ "lower non-critical threshold", ++ "positive-going hysteresis", ++ "negative-going hysteresis" /* unused */ ++}; ++ ++/* select two out of the 8 possible readable thresholds, and place indexes into the limits ++ array into lim1 and lim2. Set writable flags */ ++static void ipmisensors_select_thresholds(struct sdrdata *sd) ++{ ++ u8 capab = sd->capab; ++ u16 mask = sd->thresh_mask; ++ int tmp; ++ ++ sd->lim1 = -1; ++ sd->lim2 = -1; ++ sd->lim1_write = 0; ++ sd->lim2_write = 0; ++ ++ if (((capab & 0x0c) == 0x04) || /* readable thresholds ? */ ++ ((capab & 0x0c) == 0x08)) { ++ /* select upper threshold */ ++ if (mask & 0x10) { /* upper crit */ ++ sd->lim1 = 1; ++ if ((capab & 0x0c) == 0x08 && (mask & 0x1000)) ++ sd->lim1_write = 1; ++ } else if (mask & 0x20) { /* upper non-recov */ ++ sd->lim1 = 0; ++ if ((capab & 0x0c) == 0x08 && (mask & 0x2000)) ++ sd->lim1_write = 1; ++ } else if (mask & 0x08) { /* upper non-crit */ ++ sd->lim1 = 2; ++ if ((capab & 0x0c) == 0x08 && (mask & 0x0800)) ++ sd->lim1_write = 1; ++ } ++ ++ /* select lower threshold */ ++ if ((((capab & 0x30) == 0x10) || /* readable ? */ ++ ((capab & 0x30) == 0x20)) && /* pos hyst */ ++ sd->stype == STYPE_TEMP) ++ sd->lim2 = 6; ++ else if (mask & 0x02) { /* lower crit */ ++ sd->lim2 = 4; ++ if ((capab & 0x0c) == 0x08 && (mask & 0x0200)) ++ sd->lim2_write = 1; ++ } else if (mask & 0x04) { /* lower non-recov */ ++ sd->lim2 = 3; ++ if ((capab & 0x0c) == 0x08 && (mask & 0x0400)) ++ sd->lim2_write = 1; ++ } else if (mask & 0x01) { /* lower non-crit */ ++ sd->lim2 = 5; ++ if ((capab & 0x0c) == 0x08 && (mask & 0x0100)) ++ sd->lim2_write = 1; ++ } ++ } ++ ++ /* swap lim1/lim2 if m < 0 or function is 1/x (but not both!) */ ++ if ((sd->m < 0 && sd->linear != 7) || (sd->m >= 0 && sd->linear == 7)) { ++ tmp = sd->lim1; ++ sd->lim1 = sd->lim2; ++ sd->lim2 = tmp; ++ } ++ ++ if (sd->lim1 >= 0) ++ printk(KERN_INFO "ipmisensors: using %s for upper limit\n", ++ threshold_text[sd->lim1]); ++ else ++ printk(KERN_DEBUG "ipmisensors: no readable upper limit\n"); ++ ++ if (sd->lim2 >= 0) ++ printk(KERN_INFO "ipmisensors: using %s for lower limit\n", ++ threshold_text[sd->lim2]); ++ else ++ printk(KERN_DEBUG "ipmisensors: no readable lower limit\n"); ++} ++ ++/************* sysfs callback functions *********/ ++static ssize_t show_update_period(struct device *dev, ++ struct device_attribute *attr, char *buf) ++{ ++ struct ipmisensors_bmc_device_attribute *aattr = ++ to_ipmisensors_bmc_dev_attr(attr); ++ ++ return snprintf(buf, 20, "%d\n", aattr->bmc->update_period); ++} ++ ++static ssize_t store_update_period(struct device *dev, ++ struct device_attribute *attr, ++ const char *buf, size_t count) ++{ ++ struct ipmisensors_bmc_device_attribute *aattr = ++ to_ipmisensors_bmc_dev_attr(attr); ++ ++ aattr->bmc->update_period = simple_strtoul(buf, NULL, 10);; ++ return count; ++}; ++ ++static ssize_t show_sensor(struct device *dev, struct device_attribute *attr, ++ char *buf) ++{ ++ struct ipmisensors_device_attribute *sattr = ++ to_ipmisensors_dev_attr(attr); ++ return snprintf(buf, 20, "%ld\n", ++ conv_val(sattr->sdr->reading, sattr->sdr)); ++} ++ ++static ssize_t show_sensor_max(struct device *dev, ++ struct device_attribute *attr, char *buf) ++{ ++ long max = 0; ++ struct ipmisensors_device_attribute *sattr = ++ to_ipmisensors_dev_attr(attr); ++ ++ if (sattr->sdr->lim1 >= 0) ++ max = conv_val(sattr->sdr->limits[sattr->sdr->lim1], ++ sattr->sdr); ++ return snprintf(buf, 20, "%ld\n", max); ++} ++ ++static ssize_t show_sensor_min(struct device *dev, ++ struct device_attribute *attr, char *buf) ++{ ++ long min = 0; ++ struct ipmisensors_device_attribute *sattr = ++ to_ipmisensors_dev_attr(attr); ++ ++ if (sattr->sdr->lim2 >= 0) ++ min = conv_val(sattr->sdr->limits[sattr->sdr->lim2], ++ sattr->sdr); ++ return snprintf(buf, 20, "%ld\n", min); ++}; ++ ++static ssize_t show_sensor_label(struct device *dev, ++ struct device_attribute *attr, char *buf) ++{ ++ u8 label[SDR_MAX_UNPACKED_ID_LENGTH]; ++ struct ipmisensors_device_attribute *sattr = ++ to_ipmisensors_dev_attr(attr); ++ ++ ipmisensors_sprintf(label, sattr->sdr->id, sattr->sdr->string_type, ++ sattr->sdr->id_length); ++ return snprintf(buf, 20, "%s\n", label); ++}; ++ ++static ssize_t store_sensor_max(struct device *dev, ++ struct device_attribute *attr, const char *buf, ++ size_t count) ++{ ++ long val = simple_strtoul(buf, NULL, 10); ++ struct ipmisensors_device_attribute *sattr = ++ to_ipmisensors_dev_attr(attr); ++ printk(KERN_DEBUG "ipmisensors: set max on sensor #%d to %ld", ++ sattr->sdr->number, val); ++ ipmisensors_set_sensor_threshold(sattr->sdr->bmc, sattr->sdr->number, ++ val, sattr->sdr->lim1); ++ return count; ++}; ++ ++static ssize_t store_sensor_min(struct device *dev, ++ struct device_attribute *attr, const char *buf, ++ size_t count) ++{ ++ long val = simple_strtoul(buf, NULL, 10); ++ struct ipmisensors_device_attribute *sattr = ++ to_ipmisensors_dev_attr(attr); ++ printk(KERN_DEBUG "ipmisensors: set min on sensor #%d to %ld", ++ sattr->sdr->number, val); ++ ipmisensors_set_sensor_threshold(sattr->sdr->bmc, sattr->sdr->number, ++ val, sattr->sdr->lim2); ++ return count; ++}; ++ ++static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, ++ char *buf) ++{ ++ struct ipmisensors_bmc_device_attribute *aattr = ++ to_ipmisensors_bmc_dev_attr(attr); ++ return snprintf(buf, 20, "%d\n", aattr->bmc->alarms); ++}; ++ ++static ssize_t show_name(struct device *dev, struct device_attribute *attr, ++ char *buf) ++{ ++ return snprintf(buf, 20, "%s\n", driver_data.driver_name); ++}; ++ ++/* work function to build the sysfs entries using the ipmi sdrs */ ++static void ipmisensors_build_sysfs(struct work_struct *work) ++{ ++ int temps = 0, volts = 0, currs = 0, fans = 0; ++ struct sdrdata *cursor, *next; ++ struct ipmisensors_bmc_data *bmc = container_of(work, struct ipmisensors_bmc_data, sysfs_work); ++ ++ /* find and create entries for each sdr data struct */ ++ list_for_each_entry_safe(cursor, next, &bmc->sdrs, list) { ++ u8 id[SDR_MAX_UNPACKED_ID_LENGTH]; ++ ++ cursor->attr_name = ++ (char *)kmalloc(sizeof(char) * MAX_FILENAME_LENGTH, ++ GFP_KERNEL); ++ cursor->attr_max_name = ++ (char *)kmalloc(sizeof(char) * MAX_FILENAME_LENGTH, ++ GFP_KERNEL); ++ cursor->attr_min_name = ++ (char *)kmalloc(sizeof(char) * MAX_FILENAME_LENGTH, ++ GFP_KERNEL); ++ ++ if (cursor->id_length > 0) { ++ cursor->attr_label_name = ++ (char *)kmalloc(sizeof(char) * MAX_FILENAME_LENGTH, ++ GFP_KERNEL); ++ ++ if (cursor->attr_label_name == NULL) { ++ printk(KERN_INFO ++ "ipmisensors: Out of memory (kmalloc failed)"); ++ kfree(cursor->attr_name); ++ kfree(cursor->attr_max_name); ++ kfree(cursor->attr_min_name); ++ return; ++ } ++ } ++ ++ if (cursor->attr_name == NULL || cursor->attr_max_name == NULL ++ || cursor->attr_min_name == NULL ++ || cursor->attr_label_name == NULL) { ++ printk(KERN_INFO ++ "ipmisensors: Out of memory (kmalloc failed)"); ++ kfree(cursor->attr_name); ++ kfree(cursor->attr_max_name); ++ kfree(cursor->attr_min_name); ++ kfree(cursor->attr_label_name); ++ return; ++ } ++ ++ switch (cursor->stype) { ++ case (STYPE_TEMP): ++ /* create the name of the sensor */ ++ snprintf(cursor->attr_name, MAX_FILENAME_LENGTH, ++ "temp%d_input", ++temps); ++ /* create min, max attributes */ ++ snprintf(cursor->attr_max_name, MAX_FILENAME_LENGTH, ++ "temp%d_max", temps); ++ snprintf(cursor->attr_min_name, MAX_FILENAME_LENGTH, ++ "temp%d_min", temps); ++ /* create the label of the sensor */ ++ snprintf(cursor->attr_label_name, MAX_FILENAME_LENGTH, ++ "temp%d_label", temps); ++ break; ++ case (STYPE_VOLT): ++ /* create the name of the sensor */ ++ snprintf(cursor->attr_name, MAX_FILENAME_LENGTH, ++ "in%d_input", ++volts); ++ /* create min, max attributes */ ++ snprintf(cursor->attr_max_name, MAX_FILENAME_LENGTH, ++ "in%d_max", volts); ++ snprintf(cursor->attr_min_name, MAX_FILENAME_LENGTH, ++ "in%d_min", volts); ++ /* create the label of the sensor */ ++ snprintf(cursor->attr_label_name, MAX_FILENAME_LENGTH, ++ "in%d_label", volts); ++ break; ++ case (STYPE_CURR): ++ /* create the name of the sensor */ ++ snprintf(cursor->attr_name, MAX_FILENAME_LENGTH, ++ "curr%d_input", ++currs); ++ /* create min, max attributes */ ++ sprintf(cursor->attr_max_name, "curr%d_max", currs); ++ sprintf(cursor->attr_min_name, "curr%d_min", currs); ++ /* create the label of the sensor */ ++ snprintf(cursor->attr_label_name, MAX_FILENAME_LENGTH, ++ "curr%d_label", currs); ++ break; ++ case (STYPE_FAN): ++ /* create the name of the sensor */ ++ snprintf(cursor->attr_name, MAX_FILENAME_LENGTH, ++ "fan%d_input", ++fans); ++ /* create min, max attributes */ ++ sprintf(cursor->attr_max_name, "fan%d_max", fans); ++ sprintf(cursor->attr_min_name, "fan%d_min", fans); ++ /* create the label of the sensor */ ++ snprintf(cursor->attr_label_name, MAX_FILENAME_LENGTH, ++ "fan%d_label", fans); ++ break; ++ default: ++ printk(KERN_INFO "ipmisensors: unkown sensor type\n"); ++ continue; ++ } ++ ++ cursor->attr.dev_attr.attr.name = cursor->attr_name; ++ cursor->attr.dev_attr.attr.mode = S_IRUGO; ++ cursor->attr.dev_attr.attr.owner = THIS_MODULE; ++ cursor->attr.dev_attr.show = show_sensor; ++ cursor->attr.dev_attr.store = NULL; ++ cursor->attr.sdr = cursor; ++ ++ cursor->attr_min.dev_attr.attr.name = cursor->attr_min_name; ++ cursor->attr_min.dev_attr.attr.owner = THIS_MODULE; ++ cursor->attr_min.dev_attr.show = show_sensor_min; ++ cursor->attr_min.sdr = cursor; ++ ++ if (cursor->lim2_write) { ++ printk(KERN_INFO ++ "ipmisensors: You have a writable sensor threshold! Send me an e-mail at <yani.ioannou@gmail.com>.\n"); ++ cursor->attr_min.dev_attr.store = store_sensor_min; ++ cursor->attr_min.dev_attr.attr.mode = S_IWUSR | S_IRUGO; ++ } else { ++ cursor->attr_min.dev_attr.store = NULL; ++ cursor->attr_min.dev_attr.attr.mode = S_IRUGO; ++ } ++ ++ cursor->attr_max.dev_attr.attr.name = cursor->attr_max_name; ++ cursor->attr_max.dev_attr.attr.owner = THIS_MODULE; ++ cursor->attr_max.dev_attr.show = show_sensor_max; ++ cursor->attr_max.sdr = cursor; ++ ++ if (cursor->lim1_write) { ++ printk(KERN_INFO ++ "ipmisensors: You have a writable sensor threshold! Send me an e-mail at <yani.ioannou@gmail.com>.\n"); ++ cursor->attr_max.dev_attr.store = store_sensor_max; ++ cursor->attr_max.dev_attr.attr.mode = S_IWUSR | S_IRUGO; ++ } else { ++ cursor->attr_max.dev_attr.store = NULL; ++ cursor->attr_max.dev_attr.attr.mode = S_IRUGO; ++ } ++ ++ if (cursor->id_length > 0) { ++ cursor->attr_label.dev_attr.attr.name = ++ cursor->attr_label_name; ++ cursor->attr_label.dev_attr.attr.mode = S_IRUGO; ++ cursor->attr_label.dev_attr.attr.owner = THIS_MODULE; ++ cursor->attr_label.dev_attr.show = show_sensor_label; ++ cursor->attr_label.dev_attr.store = NULL; ++ cursor->attr_label.sdr = cursor; ++ } ++ ++ printk(KERN_INFO ++ "ipmisensors: registering sensor %d: (type 0x%.2x) " ++ "(fmt=%d; m=%d; b=%d; k1=%d; k2=%d; cap=0x%.2x; mask=0x%.4x)\n", ++ cursor->number, cursor->stype, cursor->format, cursor->m, ++ cursor->b, cursor->k & 0xf, cursor->k >> 4, ++ cursor->capab, cursor->thresh_mask); ++ ++ if (cursor->id_length > 0) { ++ ipmisensors_sprintf(id, cursor->id, cursor->string_type, ++ cursor->id_length); ++ switch (cursor->stype) { ++ case (STYPE_TEMP): ++ printk(KERN_INFO ++ "ipmisensors: sensors.conf: label temp%d \"%s\"\n", ++ temps, id); ++ break; ++ case (STYPE_VOLT): ++ printk(KERN_INFO ++ "ipmisensors: sensors.conf: label in%d \"%s\"\n", ++ volts, id); ++ break; ++ case (STYPE_CURR): ++ printk(KERN_INFO ++ "ipmisensors: sensors.conf: label curr%d \"%s\"\n", ++ currs, id); ++ break; ++ case (STYPE_FAN): ++ printk(KERN_INFO ++ "ipmisensors: sensors.conf: label fan%d \"%s\"\n", ++ fans, id); ++ break; ++ } ++ } ++ ++ ipmisensors_select_thresholds(cursor); ++ ++ if (cursor->linear != 0 && cursor->linear != 7) { ++ printk(KERN_INFO ++ "ipmisensors: sensor %d: nonlinear function 0x%.2x unsupported, expect bad results\n", ++ cursor->number, cursor->linear); ++ } ++ ++ if ((cursor->format & 0x03) == 0x02) { ++ printk(KERN_INFO ++ "ipmisensors: sensor %d: 1's complement format unsupported, expect bad results\n", ++ cursor->number); ++ } else if ((cursor->format & 0x03) == 0x03) { ++ printk(KERN_INFO ++ "ipmisensors: sensor %d: threshold sensor only, no readings available", ++ cursor->number); ++ } ++ ++ if (cursor->lim1_write || cursor->lim2_write) ++ cursor->attr.dev_attr.attr.mode = 0644; ++ else ++ cursor->attr.dev_attr.attr.mode = 0444; ++ ++ if (device_create_file(bmc->dev, &cursor->attr.dev_attr) < 0 ++ || device_create_file(bmc->dev, ++ &cursor->attr_min.dev_attr) < 0 ++ || device_create_file(bmc->dev, ++ &cursor->attr_max.dev_attr) < 0 ++ || (cursor->id_length > ++ 0 ? device_create_file(bmc->dev, ++ &cursor->attr_label.dev_attr) < ++ 0 : 0) ++ ) { ++ printk(KERN_INFO ++ "ipmisensors: sysfs file creation failed for SDR %d (%s).\n", ++ cursor->number, cursor->id); ++ kfree(cursor->attr_name); ++ kfree(cursor->attr_max_name); ++ kfree(cursor->attr_min_name); ++ kfree(cursor->attr_label_name); ++ return; ++ } ++ } ++ ++ bmc->alarms_attr.dev_attr.attr.name = "alarms"; ++ bmc->alarms_attr.dev_attr.attr.mode = S_IRUGO; ++ bmc->alarms_attr.dev_attr.attr.owner = THIS_MODULE; ++ bmc->alarms_attr.dev_attr.show = show_alarms; ++ bmc->alarms_attr.dev_attr.store = NULL; ++ bmc->alarms_attr.bmc = bmc; ++ ++ if (device_create_file(bmc->dev, &bmc->alarms_attr.dev_attr) < 0) { ++ printk(KERN_INFO ++ "ipmisensors: Failed to create sysfs entry 'alarms'"); ++ return; ++ } ++ ++ bmc->name_attr.attr.name = "name"; ++ bmc->name_attr.attr.mode = S_IRUGO; ++ bmc->name_attr.attr.owner = THIS_MODULE; ++ bmc->name_attr.show = show_name; ++ ++ if (device_create_file(bmc->dev, &bmc->name_attr) < 0) { ++ printk(KERN_INFO ++ "ipmisensors: Failed to create sysfs entry 'name'"); ++ return; ++ } ++ ++ bmc->update_attr.dev_attr.attr.name = "update_period"; ++ bmc->update_attr.dev_attr.attr.mode = S_IWUSR | S_IRUGO; ++ bmc->update_attr.dev_attr.attr.owner = THIS_MODULE; ++ bmc->update_attr.dev_attr.show = show_update_period; ++ bmc->update_attr.dev_attr.store = store_update_period; ++ bmc->update_attr.bmc = bmc; ++ ++ if (device_create_file(bmc->dev, &bmc->update_attr.dev_attr) < 0) { ++ printk(KERN_INFO ++ "ipmisensors: Failed to create sysfs entry 'update_period'"); ++ return; ++ } ++ ++ printk(KERN_INFO ++ "ipmisensors: registered %d temp, %d volt, %d current, %d fan sensors\n", ++ temps, volts, currs, fans); ++ ++ /* This completes the initialization. We can now kickoff the ++ * periodic update of the bmc sensor's values by scheduling ++ * the first work. ++ */ ++ queue_work(ipmisensors_workqueue, &bmc->update_work.work); ++ ++} ++ ++/** ++ * Process an SDR response message, save the SDRs we like in the sdr ++ * list for the given BMC. ++ * ++ * @bmc: the bmc the message is from ++ * @msg: the IPMI SDR response message ++ */ ++static void ipmisensors_rcv_sdr_msg(struct ipmisensors_bmc_data *bmc, ++ struct kernel_ipmi_msg *msg) ++{ ++ u16 record; ++ int type; ++ int stype; ++ int id_length; ++ int i; ++ int ipmi_ver = 0; ++ unsigned char *data; ++ u8 id[SDR_MAX_UNPACKED_ID_LENGTH]; ++ struct sdrdata *sdr; ++ ++ if (msg->data[0] != 0) { ++ /* cut request in half and try again */ ++ bmc->ipmi_sdr_partial_size /= 2; ++ if (bmc->ipmi_sdr_partial_size < 8) { ++ printk(KERN_INFO ++ "ipmisensors: IPMI buffers too small, giving up\n"); ++ bmc->state = STATE_DONE; ++ return; ++ } ++ printk(KERN_DEBUG ++ "ipmisensors: Reducing SDR request size to %d\n", ++ bmc->ipmi_sdr_partial_size); ++ ++ ipmisensors_get_sdr(bmc, 0, 0, 0); ++ bmc->state = STATE_SDR; ++ return; ++ } ++ if (bmc->ipmi_sdr_partial_size < IPMI_SDR_SIZE) { ++ if (bmc->rx_msg_data_offset == 0) { ++ memcpy(bmc->rx_msg_data, msg->data, ++ bmc->ipmi_sdr_partial_size + 3); ++ bmc->rx_msg_data_offset = ++ bmc->ipmi_sdr_partial_size + 3; ++ } else { ++ memcpy(bmc->rx_msg_data + bmc->rx_msg_data_offset, ++ msg->data + 3, bmc->ipmi_sdr_partial_size); ++ bmc->rx_msg_data_offset += bmc->ipmi_sdr_partial_size; ++ } ++ if (bmc->rx_msg_data_offset > bmc->rx_msg_data[7] + 7) { ++ /* got last chunk */ ++ bmc->rx_msg_data_offset = 0; ++ data = bmc->rx_msg_data; ++ } else { ++ /* get more */ ++ record = ++ (bmc->rx_msg_data[4] << 8) | bmc->rx_msg_data[3]; ++ ipmisensors_get_sdr(bmc, bmc->resid, record, ++ bmc->rx_msg_data_offset - 3); ++ bmc->state = STATE_SDR; ++ return; ++ } ++ } else { ++ /* got it in one chunk */ ++ data = msg->data; ++ } ++ ++ bmc->nextrecord = (data[2] << 8) | data[1]; ++ ++ /* If the ipmi version is 0.9 we have to remap some things. ++ * Yes this is very ugly, but we aren't the ones who ++ * implemented an incomplete spec! ++ */ ++ ipmi_ver = data[5]; ++ ++ type = data[6]; ++ /* known SDR type */ ++ if (type == 1 || type == 2) { ++ stype = data[(ipmi_ver == 0x90 ? 16 : 15)]; ++ /* known sensor type */ ++ if (stype <= STYPE_MAX) { ++ if (data[(ipmi_ver == 0x90 ? 17 : 16)] != 0x01) { ++ if (type == 1) ++ ipmisensors_sprintf(id, &data[51], ++ data[50] >> 6, ++ data[50] & 0x1f); ++ else ++ ipmisensors_sprintf(id, ++ &data[(ipmi_ver == ++ 0x90 ? 30 : ++ 35)], ++ data[(ipmi_ver == ++ 0x90 ? 29 : ++ 34)] >> 6, ++ data[(ipmi_ver == ++ 0x90 ? 29 : ++ 34)] & 0x1f); ++ printk(KERN_INFO ++ "ipmisensors: skipping non-threshold sensor \"%s\"\n", ++ id); ++ } else { ++ /* add entry to sdrd table */ ++ sdr = ipmisensors_new_sdr(); ++ if (!sdr) { ++ printk(KERN_ERR ++ "ipmisensors: could not allocate memory for new SDR"); ++ return; ++ } ++ sdr->bmc = bmc; ++ sdr->stype = stype; ++ sdr->number = data[10]; ++ sdr->capab = data[(ipmi_ver == 0x90 ? 15 : 14)]; ++ sdr->thresh_mask = ++ (((u16) data[(ipmi_ver == 0x90 ? 21 : 22)]) ++ << 8) | data[21]; ++ if (type == 1) { ++ sdr->format = ++ data[(ipmi_ver == ++ 0x90 ? 22 : 24)] >> 6; ++ sdr->linear = ++ data[(ipmi_ver == ++ 0x90 ? 25 : 26)] & 0x7f; ++ sdr->m = ++ data[(ipmi_ver == 0x90 ? 26 : 27)]; ++ sdr->m |= ((u16) ++ (data ++ [(ipmi_ver == ++ 0x90 ? 27 : 28)] ++ & 0xc0)) << 2; ++ if (sdr->m & 0x0200) { ++ /* sign extend */ ++ sdr->m |= 0xfc00; ++ } ++ sdr->b = ++ data[(ipmi_ver == 0x90 ? 28 : 29)]; ++ sdr->b |= ((u16) ++ (data ++ [(ipmi_ver == ++ 0x90 ? 29 : 30)] ++ & 0xc0)) << 2; ++ if (sdr->b & 0x0200) { ++ /* sign extend */ ++ sdr->b |= 0xfc00; ++ } ++ sdr->k = ++ data[(ipmi_ver == 0x90 ? 31 : 32)]; ++ sdr->nominal = ++ data[(ipmi_ver == 0x90 ? 33 : 34)]; ++ for (i = 0; i < SDR_LIMITS; i++) { ++ /* assume readable */ ++ sdr->limits[i] = ++ data[(ipmi_ver == ++ 0x90 ? 40 : 39) + i]; ++ } ++ sdr->string_type = data[50] >> 6; ++ id_length = data[50] & 0x1f; ++ memcpy(sdr->id, &data[51], id_length); ++ sdr->id_length = id_length; ++ } else { ++ sdr->m = 1; ++ sdr->b = 0; ++ sdr->k = 0; ++ sdr->string_type = ++ data[(ipmi_ver == ++ 0x90 ? 29 : 34)] >> 6; ++ id_length = data[34] & 0x1f; ++ if (id_length > 0) { ++ memcpy(sdr->id, ++ &data[(ipmi_ver == ++ 0x90 ? 30 : 35)], ++ id_length); ++ } ++ sdr->id_length = id_length; ++ /* limits?? */ ++ if (ipmi_ver == 0x90) { ++ memcpy(sdr->id, ++ &data[30], id_length); ++ sdr->id_length = id_length; ++ } ++ } ++ ipmisensors_add_sdr(bmc, sdr); ++ } ++ } ++ /* peek at the other SDR types */ ++ } else if (type == 0x10 || type == 0x11 || type == 0x12) { ++ ipmisensors_sprintf(id, data + 19, data[18] >> 6, ++ data[18] & 0x1f); ++ if (type == 0x10) { ++ printk(KERN_INFO ++ "ipmisensors: Generic Device acc=0x%x; slv=0x%x; lun=0x%x; type=0x%x; \"%s\"\n", ++ data[8], data[9], data[10], data[13], id); ++ } else if (type == 0x11) { ++ printk(KERN_INFO ++ "ipmisensors: FRU Device acc=0x%x; slv=0x%x; log=0x%x; ch=0x%x; type=0x%x; \"%s\"\n", ++ data[8], data[9], data[10], data[11], data[13], ++ id); ++ } else { ++ printk(KERN_INFO ++ "ipmisensors: Mgmt Ctllr Device slv=0x%x; \"%s\"\n", ++ data[8], id); ++ } ++ } else if (type == 0x14) { ++ printk(KERN_INFO ++ "ipmisensors: Message Channel Info Records:\n"); ++ for (i = 0; i < 8; i++) { ++ printk(KERN_INFO "ipmisensors: Channel %d info 0x%x\n", ++ i, data[9 + i]); ++ } ++ } else { ++ printk(KERN_INFO "ipmisensors: Skipping SDR type 0x%x\n", type); ++ } ++ if (ipmi_ver != 0x90) { ++ if (bmc->nextrecord >= 6224) { ++ /*YJ stop sensor scan on poweredge 1750 */ ++ bmc->nextrecord = 0xffff; ++ } ++ } ++ ++ if (bmc->nextrecord == 0xFFFF) { ++ if (bmc->sdr_count == 0) { ++ printk(KERN_INFO ++ "ipmisensors: No recognized sensors found.\n"); ++ bmc->state = STATE_DONE; ++ } else { ++ printk(KERN_INFO "ipmisensors: all sensors detected\n"); ++ bmc->state = STATE_SYSTABLE; ++ ++ /* Schedule sysfs build/registration work */ ++ INIT_WORK(&bmc->sysfs_work, ipmisensors_build_sysfs); ++ queue_work(ipmisensors_workqueue, &bmc->sysfs_work); ++ } ++ } else { ++ ipmisensors_get_sdr(bmc, 0, bmc->nextrecord, 0); ++ bmc->state = STATE_SDR; ++ } ++} ++ ++/** ++ * Process incoming messages based on internal state ++ * ++ * @bmc: the bmc the message is from. ++ * @msg: the ipmi message to process. ++ */ ++static void ipmisensors_rcv_msg(struct ipmisensors_bmc_data *bmc, ++ struct kernel_ipmi_msg *msg) ++{ ++ switch (bmc->state) { ++ case STATE_INIT: ++ case STATE_RESERVE: ++ bmc->resid = (((u16) msg->data[2]) << 8) | msg->data[1]; ++ ++ printk(KERN_DEBUG "ipmisensors: Got first resid 0x%.4x\n", ++ bmc->resid); ++ ++ ipmisensors_get_sdr(bmc, 0, 0, 0); ++ bmc->state = STATE_SDR; ++ break; ++ ++ case STATE_SDR: ++ case STATE_SDRPARTIAL: ++ ipmisensors_rcv_sdr_msg(bmc, msg); ++ break; ++ ++ case STATE_READING: ++ ipmisensors_rcv_reading_msg(bmc, msg); ++ break; ++ ++ case STATE_UNCANCEL: ++ bmc->resid = (((u16) msg->data[2]) << 8) | msg->data[1]; ++ ++ printk(KERN_DEBUG "ipmisensors: Got new resid 0x%.4x\n", ++ bmc->resid); ++ ++ bmc->rx_msg_data_offset = 0; ++ ipmisensors_get_sdr(bmc, 0, bmc->nextrecord, 0); ++ bmc->state = STATE_SDR; ++ break; ++ ++ case STATE_DONE: ++ case STATE_SYSTABLE: ++ break; ++ default: ++ bmc->state = STATE_INIT; ++ } ++} ++ ++/** ++ * Callback to handle a received IPMI message from a given BMC. ++ * ++ * @msg: the received message. ++ * @handler_data: a pointer to the particular bmc ipmisensors_bmc_data struct. ++ */ ++static void ipmisensors_msg_handler(struct ipmi_recv_msg *msg, ++ void *user_msg_data) ++{ ++ struct ipmisensors_bmc_data *bmc = ++ (struct ipmisensors_bmc_data *)user_msg_data; ++ ++ if (msg->msg.data[0] != 0) ++ printk(KERN_WARNING ++ "ipmisensors: Error 0x%x on cmd 0x%x/0x%x\n", ++ msg->msg.data[0], msg->msg.netfn, msg->msg.cmd); ++ ++ if (bmc != NULL && ipmisensors_intf_registered(bmc->interface_id)) { ++ if (bmc->state == STATE_SDR && ++ msg->msg.data[0] == IPMI_INVALID_RESERVATION_ID) { ++ /* reservation cancelled, get new resid */ ++ if (++bmc->errorcount > 275) { ++ printk(KERN_ERR ++ "ipmisensors: Too many reservations cancelled, giving up\n"); ++ bmc->state = STATE_DONE; ++ } else { ++ printk(KERN_DEBUG ++ "ipmisensors: resid 0x%04x cancelled, getting new one\n", ++ bmc->resid); ++ ++ ipmisensors_reserve_sdr(bmc); ++ bmc->state = STATE_UNCANCEL; ++ } ++ } else if (msg->msg.data[0] != IPMI_CC_NO_ERROR && ++ msg->msg.data[0] != IPMI_ERR_RETURNING_REQ_BYTES && ++ msg->msg.data[0] != IPMI_ERR_PROVIDING_RESPONSE) { ++ printk(KERN_ERR ++ "ipmisensors: Error 0x%x on cmd 0x%x/0x%x; state = %d; probably fatal.\n", ++ msg->msg.data[0], msg->msg.netfn & 0xfe, ++ msg->msg.cmd, bmc->state); ++ } else { ++ printk(KERN_DEBUG "ipmisensors: received message\n"); ++ ipmisensors_rcv_msg(bmc, &msg->msg); ++ } ++ ++ } else { ++ printk(KERN_WARNING ++ "ipmisensors: Response for non-registered BMC\n"); ++ if (bmc != NULL) ++ printk(KERN_DEBUG "ipmisensors: BMC ID: %d\n", ++ bmc->interface_id); ++ else ++ printk(KERN_DEBUG "ipmisensors: BMC NULL!\n"); ++ } ++ ++ ipmi_free_recv_msg(msg); ++} ++ ++/****** IPMI Interface Initialization ******/ ++ ++/** ++ * Return true if the given ipmi interface has been registered. ++ * ++ * @ipmi_intf: The IPMI interface number. ++ */ ++static int ipmisensors_intf_registered(int ipmi_intf) ++{ ++ int found = 0; ++ struct ipmisensors_bmc_data *cursor, *next; ++ ++ /* find and free the ipmisensors_bmc_data struct */ ++ list_for_each_entry_safe(cursor, next, &driver_data.bmc_data, list) { ++ if (cursor->interface_id == ipmi_intf) { ++ found++; ++ } ++ } ++ ++ return found; ++} ++ ++/** ++ * Return true if the given BMC has been registered. ++ * ++ * @bmc: The BMC device. ++ */ ++static int ipmisensors_bmc_registered(struct device *bmc) ++{ ++ int found = 0; ++ struct ipmisensors_bmc_data *cursor, *next; ++ ++ /* find and free the ipmisensors_bmc_data struct */ ++ list_for_each_entry_safe(cursor, next, &driver_data.bmc_data, list) { ++ if (cursor->dev == bmc) { ++ found++; ++ } ++ } ++ ++ return found; ++} ++ ++/** ++ * Register new IPMI BMC interface. Interface indpendent callback created ++ * for flexibility in adding new types of interface callbacks in future. ++ * ++ * @ipmi_intf: The IPMI interface number. ++ */ ++static void ipmisensors_register_bmc(int ipmi_intf, struct ipmi_addr *address) ++{ ++ int error; ++ ++ /* allocate a new ipmisensors_bmc_data struct */ ++ ++ struct ipmisensors_bmc_data *bmc = (struct ipmisensors_bmc_data *) ++ kmalloc(sizeof(struct ipmisensors_bmc_data), GFP_KERNEL); ++ ++ /* initialize members */ ++ INIT_LIST_HEAD(&bmc->sdrs); ++ bmc->interface_id = ipmi_intf; ++ ++ bmc->address = *address; ++ ++ bmc->sdr_count = 0; ++ bmc->msgid = 0; ++ bmc->ipmi_sdr_partial_size = IPMI_CHUNK_SIZE; ++ bmc->state = STATE_INIT; ++ bmc->errorcount = 0; ++ bmc->rx_msg_data_offset = 0; ++ bmc->dev = ipmi_get_bmcdevice(ipmi_intf); ++ ++ /* default to 3 second min update interval */ ++ bmc->update_period = 3; ++ ++ if (bmc->dev == NULL) { ++ printk(KERN_ERR ++ "ipmisensors: Error, couldn't get BMC device for interface %d\n", ++ bmc->interface_id); ++ kfree(bmc); ++ return; ++ } ++ ++ /* Create IPMI messaging interface user */ ++ error = ipmi_create_user(bmc->interface_id, &driver_data.ipmi_hndlrs, ++ bmc, &bmc->user); ++ if (error < 0) { ++ printk(KERN_ERR ++ "ipmisensors: Error, unable to register user with ipmi interface %d\n", ++ bmc->interface_id); ++ kfree(bmc); ++ return; ++ } ++ ++ /* Register the BMC as a HWMON class device */ ++ bmc->class_dev = hwmon_device_register(bmc->dev); ++ ++ if (IS_ERR(bmc->class_dev)) { ++ printk(KERN_ERR ++ "ipmisensors: Error, unable to register hwmon class device for interface %d\n", ++ bmc->interface_id); ++ kfree(bmc); ++ return; ++ } ++ ++ /* Register the BMC in the driver */ ++ if (ipmisensors_bmc_registered(bmc->dev)) { ++ printk(KERN_ERR ++ "ipmisensors: BMC on interface %d already registered\n", ++ bmc->interface_id); ++ hwmon_device_unregister(bmc->class_dev); ++ kfree(bmc); ++ return; ++ } ++ ++ ipmi_get_version(bmc->user, &bmc->ipmi_version_major, ++ &bmc->ipmi_version_minor); ++ ++ /* finally add the new bmc data to the bmc data list */ ++ list_add_tail(&bmc->list, &driver_data.bmc_data); ++ driver_data.interfaces++; ++ ++ printk(KERN_INFO ++ "ipmisensors: Registered IPMI %d.%d BMC over interface %d\n", ++ bmc->ipmi_version_major, ++ bmc->ipmi_version_minor, bmc->interface_id); ++ ++ /* Send a reserve SDR command to the bmc */ ++ ipmisensors_reserve_sdr(bmc); ++ ++ /* initialize the bmc's update work struct */ ++ INIT_DELAYED_WORK(&bmc->update_work, ipmisensors_update_bmc); ++} ++ ++/** ++ * Callback for when an IPMI BMC is gone. Interface indpendent callback created ++ * for flexibility in adding new types of interface callbacks in future. ++ * ++ * @ipmi_intf: The IPMI interface number. ++ */ ++static void ipmisensors_unregister_bmc(int ipmi_intf) ++{ ++ struct ipmisensors_bmc_data *cursor, *next; ++ ++ /* find and free the ipmisensors_bmc_data struct */ ++ list_for_each_entry_safe(cursor, next, &driver_data.bmc_data, list) { ++ if (cursor->interface_id == ipmi_intf) { ++ list_del(&cursor->list); ++ printk(KERN_DEBUG ++ "ipmisensors: cancelling queued work\n"); ++ /* cancel update work queued for this bmc */ ++ cancel_delayed_work(&cursor->update_work); ++ printk(KERN_DEBUG ++ "ipmisensors: waiting for update to finish\n"); ++ /* wait for readings to finish */ ++ while (cursor->state != STATE_DONE) ; ++ ++ device_remove_file(cursor->dev, ++ &cursor->alarms_attr.dev_attr); ++ device_remove_file(cursor->dev, ++ &cursor->update_attr.dev_attr); ++ hwmon_device_unregister(cursor->class_dev); ++ ipmisensors_sdr_cleanup(cursor); ++ ipmi_destroy_user(cursor->user); ++ ++ printk(KERN_INFO ++ "ipmisensors: Unegistered IPMI interface %d\n", ++ cursor->interface_id); ++ ++ kfree(cursor); ++ driver_data.interfaces--; ++ } ++ } ++ ++} ++ ++/** ++ * Unregister all registered bmcs. ++ */ ++static void ipmisensors_unregister_bmc_all(void) ++{ ++ struct ipmisensors_bmc_data *cursor, *next; ++ ++ /* find and free the ipmisensors_bmc_data struct */ ++ list_for_each_entry_safe(cursor, next, &driver_data.bmc_data, list) { ++ list_del(&cursor->list); ++ ++ /* cancel update work queued for this bmc */ ++ printk(KERN_DEBUG "ipmisensors: cancelling queued work\n"); ++ cancel_delayed_work(&cursor->update_work); ++ ++ printk(KERN_DEBUG ++ "ipmisensors: waiting for update to finish\n"); ++ /* wait for readings to finish */ ++ while (cursor->state != STATE_DONE) ; ++ ++ device_remove_file(cursor->dev, &cursor->alarms_attr.dev_attr); ++ device_remove_file(cursor->dev, &cursor->update_attr.dev_attr); ++ hwmon_device_unregister(cursor->class_dev); ++ ipmisensors_sdr_cleanup(cursor); ++ ipmi_destroy_user(cursor->user); ++ ++ printk(KERN_INFO ++ "ipmisensors: Unegistered IPMI interface %d\n", ++ cursor->interface_id); ++ ++ kfree(cursor); ++ } ++ ++ driver_data.interfaces = 0; ++} ++ ++/** ++ * Callback for when a new IPMI SMI type interface is found. ++ * ++ * @if_num: The IPMI interface number. ++ */ ++static void ipmisensors_new_smi(int if_num, struct device *dev) ++{ ++ struct ipmi_addr smi_address = { ++ IPMI_SYSTEM_INTERFACE_ADDR_TYPE, ++ IPMI_BMC_CHANNEL, ++ {0}, ++ }; ++ ++ /* calls the generic new interface function */ ++ ipmisensors_register_bmc(if_num, &smi_address); ++} ++ ++/** ++ * Callback for when an exisiting IPMI SMI type interface is gone. ++ * ++ * @if_num: The IPMI interface number. ++ */ ++static void ipmisensors_smi_gone(int if_num) ++{ ++ if (driver_data.interfaces > 0) { ++ ipmisensors_unregister_bmc(if_num); ++ } ++} ++ ++/** ++ * Initialize the module. ++ */ ++static int __init ipmisensors_init(void) ++{ ++ int error; ++ printk(KERN_INFO "ipmisensors - IPMI BMC sensors interface\n"); ++ ++ /* init cache managers */ ++ driver_data.sdrdata_cache = ++ kmem_cache_create("ipmisensors_sdrdata", sizeof(struct sdrdata), 0, ++ 0, NULL, NULL); ++ driver_data.sysfsattr_cache = ++ kmem_cache_create("ipmisensors_sysfsattr", ++ sizeof(struct ipmisensors_device_attribute), 0, 0, ++ NULL, NULL); ++ ++ if (!driver_data.sdrdata_cache || !driver_data.sysfsattr_cache) { ++ if (driver_data.sdrdata_cache) ++ kmem_cache_destroy(driver_data.sdrdata_cache); ++ if (driver_data.sysfsattr_cache) ++ kmem_cache_destroy(driver_data.sysfsattr_cache); ++ return -ENOMEM; ++ } ++ ++ /* register IPMI interface callback(s) */ ++ error = ipmi_smi_watcher_register(&driver_data.smi_watcher); ++ if (error) { ++ printk(KERN_WARNING ++ "ipmisensors: can't register smi watcher\n"); ++ return error; ++ } ++ ++ /* create work queue, keep it simple, single-threaded */ ++ ipmisensors_workqueue = ++ create_singlethread_workqueue("ipmisensors_workqueue"); ++ ++ return 0; ++} ++ ++/** ++ * Cleanup ++ */ ++static void ipmisensors_cleanup(void) ++{ ++ /* start cleanup */ ++ cleanup = 1; ++ ++ /* unregister bmcs */ ++ printk(KERN_DEBUG "ipmisensors: unregister bmcs\n"); ++ ipmi_smi_watcher_unregister(&driver_data.smi_watcher); ++ ipmisensors_unregister_bmc_all(); ++ ++ /* flush & destroy work queue */ ++ printk(KERN_DEBUG "ipmisensors: destroy workqueue\n"); ++ flush_workqueue(ipmisensors_workqueue); ++ destroy_workqueue(ipmisensors_workqueue); ++ ++ /* remove cache managers */ ++ if (driver_data.sdrdata_cache) ++ kmem_cache_destroy(driver_data.sdrdata_cache); ++ if (driver_data.sysfsattr_cache) ++ kmem_cache_destroy(driver_data.sysfsattr_cache); ++} ++ ++/** ++ * Cleanup and exit the module ++ */ ++static void __exit ipmisensors_exit(void) ++{ ++ ipmisensors_cleanup(); ++ printk(KERN_DEBUG "ipmisensors: cleanup finished\n"); ++} ++ ++MODULE_AUTHOR("Yani Ioannou <yani.ioannou@gmail.com>"); ++MODULE_DESCRIPTION("IPMI BMC sensors"); ++MODULE_LICENSE("GPL"); ++ ++module_init(ipmisensors_init); ++module_exit(ipmisensors_exit); +diff -rduNp linux-2.6.20.3.orig/drivers/hwmon/ipmisensors.h linux-2.6.20.3/drivers/hwmon/ipmisensors.h +--- linux-2.6.20.3.orig/drivers/hwmon/ipmisensors.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.20.3/drivers/hwmon/ipmisensors.h 2007-03-14 14:41:23.000000000 +0100 +@@ -0,0 +1,240 @@ ++/* ++ * ipmisensors.h - lm_sensors interface to IPMI sensors. ++ * ++ * Copyright (C) 2004-2006 Yani Ioannou <yani.ioannou@gmail.com> ++ * ++ * Adapted from bmcsensors (lm-sensors for linux 2.4) ++ * bmcsensors (C) Mark D. Studebaker <mdsxyz123@yahoo.com> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License as published by ++ * the Free Software Foundation; either version 2 of the License, or ++ * (at your option) any later version. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ * ++ * You should have received a copy of the GNU General Public License ++ * along with this program; if not, write to the Free Software ++ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. ++ */ ++ ++#include <linux/ipmi.h> ++#include <linux/list.h> ++#include <linux/slab.h> ++#include <linux/workqueue.h> ++ ++/* SDR defs */ ++#define STYPE_TEMP 0x01 ++#define STYPE_VOLT 0x02 ++#define STYPE_CURR 0x03 ++#define STYPE_FAN 0x04 ++ ++#define SDR_LIMITS 8 ++#define SDR_MAX_ID_LENGTH 16 ++#define SDR_MAX_UNPACKED_ID_LENGTH ((SDR_MAX_ID_LENGTH * 4 / 3) + 2) ++ ++/* the last sensor type we are interested in */ ++#define STYPE_MAX 4 ++ ++#define IPMI_SDR_SIZE 67 ++#define IPMI_CHUNK_SIZE 16 ++ ++#define MAX_FILENAME_LENGTH 30 ++ ++struct ipmisensors_device_attribute { ++ struct device_attribute dev_attr; ++ struct sdrdata *sdr; ++}; ++#define to_ipmisensors_dev_attr(_dev_attr) \ ++ container_of(_dev_attr, struct ipmisensors_device_attribute, dev_attr) ++ ++#define IPMISENSORS_DEVICE_ATTR(_name,_mode,_show,_store,_index) \ ++struct ipmisensors_attribute sensor_dev_attr_##_name = { \ ++ .dev_attr = __ATTR(_name,_mode,_show,_store), \ ++ .index = _index, \ ++} ++ ++struct ipmisensors_bmc_device_attribute { ++ struct device_attribute dev_attr; ++ struct ipmisensors_bmc_data *bmc; ++}; ++#define to_ipmisensors_bmc_dev_attr(_dev_attr) \ ++ container_of(_dev_attr, struct ipmisensors_bmc_device_attribute, dev_attr) ++ ++/** ++ * &struct_sdrdata stores the IPMI Sensor Data Record (SDR) data, as recieved from the BMC, along with the corresponding sysfs attributes ++ */ ++struct sdrdata { ++ struct list_head list; ++ /* retrieved from SDR, not expected to change */ ++ /* Sensor Type Code */ ++ u8 stype; ++ u8 number; ++ /* Sensor Capability Code */ ++ u8 capab; ++ u16 thresh_mask; ++ u8 format; ++ u8 linear; ++ s16 m; ++ s16 b; ++ u8 k; ++ u8 nominal; ++ u8 limits[SDR_LIMITS]; ++ /* index into limits for reported upper and lower limit */ ++ int lim1, lim2; ++ u8 lim1_write, lim2_write; ++ u8 string_type; ++ u8 id_length; ++ u8 id[SDR_MAX_ID_LENGTH]; ++ /* retrieved from reading */ ++ u8 reading; ++ u8 status; ++ u8 thresholds; ++ /* sensor's bmc */ ++ struct ipmisensors_bmc_data *bmc; ++ /* sysfs entries */ ++ struct ipmisensors_device_attribute attr; ++ char *attr_name; ++ struct ipmisensors_device_attribute attr_min; ++ char *attr_min_name; ++ struct ipmisensors_device_attribute attr_max; ++ char *attr_max_name; ++ struct ipmisensors_device_attribute attr_label; ++ char *attr_label_name; ++ ++}; ++ ++/** ++ * &struct_ipmisensors_data stores the data for the ipmisensors driver. ++ */ ++struct ipmisensors_data { ++ /* Driver struct */ ++ char *driver_name; ++ ++ /* Linked list of ipmisensors_bmc_data structs, one for each BMC */ ++ struct list_head bmc_data; ++ ++ /* Number of ipmi interfaces (and hence ipmisensors_data structs). */ ++ int interfaces; ++ ++ /* IPMI kernel interface - SMI watcher */ ++ struct ipmi_smi_watcher smi_watcher; ++ ++ /* IPMI kernel interface - user handlers */ ++ struct ipmi_user_hndl ipmi_hndlrs; ++ ++ /* Cache manager for sdrdata cache */ ++ struct kmem_cache *sdrdata_cache; ++ ++ /* Cache manager for ipmi_sensor_device_attribute cache */ ++ struct kmem_cache *sysfsattr_cache; ++}; ++ ++/** ++ * &states: enumeration of state codes for a bmc specific ipmisensors ++ */ ++enum states { ++ STATE_INIT, ++ STATE_RESERVE, ++ STATE_SDR, ++ STATE_SDRPARTIAL, ++ STATE_READING, ++ STATE_UNCANCEL, ++ STATE_SYSTABLE, ++ STATE_DONE ++}; ++ ++/** ++ * &struct_ipmisensors_bmc_data stores the data for a particular IPMI BMC. ++ */ ++struct ipmisensors_bmc_data { ++ struct list_head list; ++ ++ /* The IPMI interface number */ ++ int interface_id; ++ ++ /* The IPMI address */ ++ struct ipmi_addr address; ++ ++ /* List of sdrdata structs (sdrs) recieved from the BMC */ ++ struct list_head sdrs; ++ ++ /* Count of the number of sdrs stored in the sdr list */ ++ int sdr_count; ++ ++ /* next message id */ ++ int msgid; ++ ++ /* The ipmi interface 'user' used to access this particular bmc */ ++ ipmi_user_t user; ++ ++ /* BMC IPMI Version (major) */ ++ unsigned char ipmi_version_major; ++ ++ /* BMC IPMI Version (minor) */ ++ unsigned char ipmi_version_minor; ++ ++ /* The size of the SDR request message */ ++ int ipmi_sdr_partial_size; ++ ++ /* transmit message buffer */ ++ struct kernel_ipmi_msg tx_message; ++ ++ /* ipmi transmited data buffer */ ++ unsigned char tx_msg_data[IPMI_MAX_MSG_LENGTH + 50]; /* why the +50 in bmcsensors? */ ++ ++ /* ipmi recieved data buffer */ ++ unsigned char rx_msg_data[IPMI_MAX_MSG_LENGTH + 50]; ++ ++ /* current recieve buffer offset */ ++ int rx_msg_data_offset; ++ ++ /* The id of then next SDR record to read during update cycle */ ++ u16 nextrecord; ++ ++ /* BMC SDR Reservation ID */ ++ u16 resid; ++ ++ /* Alarm status */ ++ u8 alarms; ++ ++ /* The cumalative error count for this bmc */ ++ int errorcount; ++ ++ /* The current state of this bmc w.r.t. ipmisensors (see enum states) */ ++ int state; ++ ++ /* The current sdr for which a reading is pending */ ++ struct sdrdata *current_sdr; ++ ++ /* The BMC's device struct */ ++ struct device *dev; ++ ++ /* hwmon class device */ ++ struct class_device *class_dev; ++ ++ /* hwmon device name */ ++ struct device_attribute name_attr; ++ ++ /* alarms attribute */ ++ struct ipmisensors_bmc_device_attribute alarms_attr; ++ ++ /* update_period attribute */ ++ struct ipmisensors_bmc_device_attribute update_attr; ++ ++ /* lower bound on time between updates (in seconds) */ ++ unsigned int update_period; ++ ++ /* semaphore used to do a headcount of the SDR readings we are waiting ++ * on in a given bmc update */ ++ struct semaphore update_semaphore; ++ ++ /* bmc's work struct for updating sensors */ ++ struct delayed_work update_work; ++ ++ /* bmc's work struct for building the sysfs workqueue */ ++ struct work_struct sysfs_work; ++}; +diff -rduNp linux-2.6.20.3.orig/include/linux/ipmi.h linux-2.6.20.3/include/linux/ipmi.h +--- linux-2.6.20.3.orig/include/linux/ipmi.h 2007-03-13 19:27:08.000000000 +0100 ++++ linux-2.6.20.3/include/linux/ipmi.h 2007-03-14 14:23:02.000000000 +0100 +@@ -300,6 +300,9 @@ int ipmi_create_user(unsigned int + safe, too. */ + int ipmi_destroy_user(ipmi_user_t user); + ++/* Get the IPMI BMC's device struct */ ++struct device *ipmi_get_bmcdevice(int ipmi_intf); ++ + /* Get the IPMI version of the BMC we are talking to. */ + void ipmi_get_version(ipmi_user_t user, + unsigned char *major, +diff -rduNp linux-2.6.20.3.orig/include/linux/ipmi_msgdefs.h linux-2.6.20.3/include/linux/ipmi_msgdefs.h +--- linux-2.6.20.3.orig/include/linux/ipmi_msgdefs.h 2007-03-13 19:27:08.000000000 +0100 ++++ linux-2.6.20.3/include/linux/ipmi_msgdefs.h 2007-03-14 14:23:02.000000000 +0100 +@@ -45,6 +45,7 @@ + + #define IPMI_NETFN_APP_REQUEST 0x06 + #define IPMI_NETFN_APP_RESPONSE 0x07 ++#define IPMI_GET_DEVICE_GUID_CMD 0x08 + #define IPMI_GET_DEVICE_ID_CMD 0x01 + #define IPMI_COLD_RESET_CMD 0x02 + #define IPMI_WARM_RESET_CMD 0x03 +@@ -57,6 +58,11 @@ + #define IPMI_GET_BMC_GLOBAL_ENABLES_CMD 0x2f + #define IPMI_READ_EVENT_MSG_BUFFER_CMD 0x35 + #define IPMI_GET_CHANNEL_INFO_CMD 0x42 ++#define IPMI_RESERVE_SDR 0x22 ++#define IPMI_GET_SDR 0x23 ++#define IPMI_GET_SENSOR_STATE_READING 0x2D ++#define IPMI_SET_SENSOR_HYSTERESIS 0x24 ++#define IPMI_SET_SENSOR_THRESHOLD 0x26 + + #define IPMI_NETFN_STORAGE_REQUEST 0x0a + #define IPMI_NETFN_STORAGE_RESPONSE 0x0b +@@ -79,10 +85,13 @@ + #define IPMI_NODE_BUSY_ERR 0xc0 + #define IPMI_INVALID_COMMAND_ERR 0xc1 + #define IPMI_TIMEOUT_ERR 0xc3 ++#define IPMI_INVALID_RESERVATION_ID 0xc5 + #define IPMI_ERR_MSG_TRUNCATED 0xc6 + #define IPMI_REQ_LEN_INVALID_ERR 0xc7 + #define IPMI_REQ_LEN_EXCEEDED_ERR 0xc8 + #define IPMI_NOT_IN_MY_STATE_ERR 0xd5 /* IPMI 2.0 */ ++#define IPMI_ERR_RETURNING_REQ_BYTES 0xca ++#define IPMI_ERR_PROVIDING_RESPONSE 0xce + #define IPMI_LOST_ARBITRATION_ERR 0x81 + #define IPMI_BUS_ERR 0x82 + #define IPMI_NAK_ON_WRITE_ERR 0x83 diff --git a/toolchain/kernel-headers/ipmi/linux-2.6.22.1-007-ipmisensors-20070314-1214.patch b/toolchain/kernel-headers/ipmi/linux-2.6.22.1-007-ipmisensors-20070314-1214.patch new file mode 100644 index 000000000..5fe74954f --- /dev/null +++ b/toolchain/kernel-headers/ipmi/linux-2.6.22.1-007-ipmisensors-20070314-1214.patch @@ -0,0 +1,1914 @@ +diff -rduNp linux-2.6.22.1.oorig2/drivers/char/ipmi/ipmi_msghandler.c linux-2.6.22.1/drivers/char/ipmi/ipmi_msghandler.c +--- linux-2.6.22.1.oorig2/drivers/char/ipmi/ipmi_msghandler.c 2007-07-10 20:56:30.000000000 +0200 ++++ linux-2.6.22.1/drivers/char/ipmi/ipmi_msghandler.c 2007-07-24 14:22:26.000000000 +0200 +@@ -1953,6 +1953,24 @@ static void remove_proc_entries(ipmi_smi + #endif /* CONFIG_PROC_FS */ + } + ++/* ++ * Retrieves the bmc_device struct for a given ipmi interface number (or NULL if none). ++ */ ++struct device *ipmi_get_bmcdevice(int if_num) ++{ ++ ipmi_smi_t intf; ++ mutex_lock(&ipmi_interfaces_mutex); ++ list_for_each_entry_rcu(intf, &ipmi_interfaces, link) { ++ if (intf->intf_num == if_num){ ++ mutex_unlock(&ipmi_interfaces_mutex); ++ return &intf->bmc->dev->dev; ++ } ++ } ++ mutex_unlock(&ipmi_interfaces_mutex); ++ ++ return NULL; ++} ++ + static int __find_bmc_guid(struct device *dev, void *data) + { + unsigned char *id = data; +@@ -4196,3 +4214,4 @@ EXPORT_SYMBOL(ipmi_get_my_LUN); + EXPORT_SYMBOL(ipmi_smi_add_proc_entry); + EXPORT_SYMBOL(ipmi_user_set_run_to_completion); + EXPORT_SYMBOL(ipmi_free_recv_msg); ++EXPORT_SYMBOL(ipmi_get_bmcdevice); +diff -rduNp linux-2.6.22.1.oorig2/drivers/hwmon/Kconfig linux-2.6.22.1/drivers/hwmon/Kconfig +--- linux-2.6.22.1.oorig2/drivers/hwmon/Kconfig 2007-07-10 20:56:30.000000000 +0200 ++++ linux-2.6.22.1/drivers/hwmon/Kconfig 2007-07-24 14:22:26.000000000 +0200 +@@ -248,6 +248,16 @@ config SENSORS_CORETEMP + sensor inside your CPU. Supported all are all known variants + of Intel Core family. + ++config SENSORS_IPMI ++ tristate "IPMI Hardware Monitoring Support" ++ depends on HWMON && IPMI_HANDLER && EXPERIMENTAL ++ help ++ If you say yes here you get support for sensors monitored by ++ an IPMI baseboard management controller (BMC). ++ ++ This driver can also be built as a module. If so, the module ++ will be called ipmisensors. ++ + config SENSORS_IT87 + tristate "ITE IT87xx and compatibles" + depends on I2C +diff -rduNp linux-2.6.22.1.oorig2/drivers/hwmon/Makefile linux-2.6.22.1/drivers/hwmon/Makefile +--- linux-2.6.22.1.oorig2/drivers/hwmon/Makefile 2007-07-10 20:56:30.000000000 +0200 ++++ linux-2.6.22.1/drivers/hwmon/Makefile 2007-07-24 14:22:26.000000000 +0200 +@@ -32,6 +32,7 @@ obj-$(CONFIG_SENSORS_FSCPOS) += fscpos.o + obj-$(CONFIG_SENSORS_GL518SM) += gl518sm.o + obj-$(CONFIG_SENSORS_GL520SM) += gl520sm.o + obj-$(CONFIG_SENSORS_HDAPS) += hdaps.o ++obj-$(CONFIG_SENSORS_IPMI) += ipmisensors.o + obj-$(CONFIG_SENSORS_IT87) += it87.o + obj-$(CONFIG_SENSORS_K8TEMP) += k8temp.o + obj-$(CONFIG_SENSORS_LM63) += lm63.o +diff -rduNp linux-2.6.22.1.oorig2/drivers/hwmon/ipmisensors.c linux-2.6.22.1/drivers/hwmon/ipmisensors.c +--- linux-2.6.22.1.oorig2/drivers/hwmon/ipmisensors.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.22.1/drivers/hwmon/ipmisensors.c 2007-07-24 14:22:26.000000000 +0200 +@@ -0,0 +1,1552 @@ ++/* ++ * ipmisensors.c - lm-sensors/hwmon interface to IPMI sensors. ++ * ++ * Copyright (C) 2004-2006 Yani Ioannou <yani.ioannou@gmail.com> ++ * ++ * Adapted from bmcsensors (lm-sensors for linux 2.4) ++ * bmcsensors (C) Mark D. Studebaker <mdsxyz123@yahoo.com> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License as published by ++ * the Free Software Foundation; either version 2 of the License, or ++ * (at your option) any later version. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ * ++ * You should have received a copy of the GNU General Public License ++ * along with this program; if not, write to the Free Software ++ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. ++ */ ++ ++#include <linux/init.h> ++#include <linux/module.h> ++#include <linux/param.h> ++#include <linux/hwmon.h> ++#include <linux/list.h> ++#include <linux/slab.h> ++#include <linux/device.h> ++#include <linux/hwmon.h> ++ ++#include "ipmisensors.h" ++ ++/****** Function Prototypes ******/ ++static void ipmisensors_send_message(struct ipmisensors_bmc_data *bmc, ++ long msgid, struct kernel_ipmi_msg *msg); ++static void ipmisensors_reserve_sdr(struct ipmisensors_bmc_data *bmc); ++static void ipmisensors_get_sdr(struct ipmisensors_bmc_data *bmc, u16 res_id, ++ u16 record, u8 offset); ++static void ipmisensors_set_sensor_threshold(struct ipmisensors_bmc_data *bmc, ++ u8 number, int value, ++ int lim_index); ++static void ipmisensors_get_reading(struct ipmisensors_bmc_data *bmc, ++ struct sdrdata *sdr); ++static void ipmisensors_msg_handler(struct ipmi_recv_msg *msg, ++ void *user_msg_data); ++static int ipmisensors_intf_registered(int ipmi_intf); ++static int ipmisensors_bmc_registered(struct device *bmc); ++static void ipmisensors_register_bmc(int ipmi_intf, struct ipmi_addr *address); ++static void ipmisensors_unregister_bmc(int ipmi_intf); ++static void ipmisensors_unregister_bmc_all(void); ++static void ipmisensors_new_smi(int if_num, struct device *dev); ++static void ipmisensors_smi_gone(int if_num); ++static void ipmisensors_update_bmc(struct work_struct *); ++static void ipmisensors_cleanup(void); ++ ++/****** Static Vars ******/ ++ ++/* set when module is being removed */ ++static int cleanup = 0; ++ ++/* ipmisensors driver data */ ++static struct ipmisensors_data driver_data = { ++ .driver_name = "bmc", ++ .bmc_data = LIST_HEAD_INIT(driver_data.bmc_data), ++ .interfaces = 0, ++ .smi_watcher = { ++ .owner = THIS_MODULE, ++ .new_smi = ipmisensors_new_smi, ++ .smi_gone = ipmisensors_smi_gone, ++ }, ++ .ipmi_hndlrs = { ++ .ipmi_recv_hndl = ipmisensors_msg_handler, ++ }, ++}; ++ ++/* sensor refresh workqueue */ ++static struct workqueue_struct *ipmisensors_workqueue; ++ ++/****** SDR List Functions ******/ ++/** ++ * Creates a new sdrdata struct, or returns NULL if insufficient memory. ++ */ ++static struct sdrdata *ipmisensors_new_sdr(void) ++{ ++ struct sdrdata *sdr; ++ ++ sdr = kmem_cache_alloc(driver_data.sdrdata_cache, GFP_ATOMIC); ++ if (sdr) { ++ memset(sdr, 0, sizeof(struct sdrdata)); ++ } else { ++ printk(KERN_ERR ++ "ipmisensors: Couldn't allocate memory for new SDR\n"); ++ } ++ ++ return sdr; ++} ++ ++/** ++ * Adds the given sdrdata struct to the given bmc's SDR list. ++ * ++ * @bmc: the bmc to send the message to. ++ */ ++static inline void ipmisensors_add_sdr(struct ipmisensors_bmc_data *bmc, ++ struct sdrdata *sdr) ++{ ++ list_add(&sdr->list, &bmc->sdrs); ++ printk(KERN_DEBUG ++ "ipmisensors: SDR %d: type 0x%02x (%s)\n", ++ bmc->sdr_count, sdr->stype, sdr->id); ++ bmc->sdr_count++; ++} ++ ++/** ++ * Cleanup the sdr list for the given BMC. ++ * ++ * @bmc: the bmc to send the message to. ++ */ ++static void ipmisensors_sdr_cleanup(struct ipmisensors_bmc_data *bmc) ++{ ++ struct sdrdata *cursor, *next; ++ ++ /* find and free each sdr data struct */ ++ list_for_each_entry_safe(cursor, next, &bmc->sdrs, list) { ++ device_remove_file(bmc->dev, &cursor->attr.dev_attr); ++ device_remove_file(bmc->dev, &cursor->attr_min.dev_attr); ++ device_remove_file(bmc->dev, &cursor->attr_max.dev_attr); ++ device_remove_file(bmc->dev, &cursor->attr_label.dev_attr); ++ ++ kfree(cursor->attr_name); ++ kfree(cursor->attr_max_name); ++ kfree(cursor->attr_min_name); ++ kfree(cursor->attr_label_name); ++ ++ list_del(&cursor->list); ++ kmem_cache_free(driver_data.sdrdata_cache, cursor); ++ } ++} ++ ++/* worker function for workqueue ipmisensors_workqueue */ ++static void ipmisensors_update_bmc(struct work_struct *work) ++{ ++ struct ipmisensors_bmc_data *bmc = container_of(work, struct ipmisensors_bmc_data, update_work.work); ++ ++ /* don't start an update cycle if one already in progress */ ++ if (bmc->state != STATE_READING) { ++ struct sdrdata *cursor, *next; ++ bmc->state = STATE_READING; ++ printk(KERN_DEBUG "ipmisensors: starting update\n"); ++ ++ /* init semaphore to 1 for update cycle */ ++ sema_init(&bmc->update_semaphore, 1); ++ ++ /* update each sdr reading */ ++ list_for_each_entry_safe(cursor, next, &bmc->sdrs, list) { ++ ipmisensors_get_reading(bmc, cursor); ++ } ++ } ++ ++ /* wait for readings (need timeout?) */ ++ down_interruptible(&bmc->update_semaphore); ++ ++ printk(KERN_DEBUG "ipmisensors: update complete\n"); ++ ++ bmc->state = STATE_DONE; ++ ++ /* if the module isn't cleaning up, schedule another update */ ++ if (!cleanup) ++ queue_delayed_work(ipmisensors_workqueue, &bmc->update_work, ++ bmc->update_period * HZ); ++} ++ ++/****** IPMI Message Sending ******/ ++ ++/** ++ * Send a message to the IPMI BMC ++ * ++ * @bmc: the bmc to send the message to. ++ * @msgid: the message id to use. ++ * @msg: the ipmi message structure. ++ */ ++static void ipmisensors_send_message(struct ipmisensors_bmc_data *bmc, ++ long msgid, struct kernel_ipmi_msg *msg) ++{ ++ if (msg->data == NULL) ++ printk(KERN_DEBUG "ipmisensors: Send 0x%x\n", msg->cmd); ++ else ++ printk(KERN_DEBUG "ipmisensors: Send 0x%x 0x%x 0x%x\n", ++ msg->cmd, msg->data[0], msg->data[1]); ++ ++ /* This should be ipmi_request, but Corey had to remove ++ * that due to it being unused at the moment, as soon as ++ * this makes it into the kernel we should request it be re-instated. ++ */ ++ ipmi_request_settime(bmc->user, &bmc->address, msgid, msg, bmc, 0, ++ -1, 0); ++} ++ ++/** ++ * Compose and send a "reserve SDR" message ++ * ++ * @bmc: the bmc to send the message to. ++ */ ++static void ipmisensors_reserve_sdr(struct ipmisensors_bmc_data *bmc) ++{ ++ bmc->tx_message.netfn = IPMI_NETFN_STORAGE_REQUEST; ++ bmc->tx_message.cmd = IPMI_RESERVE_SDR; ++ bmc->tx_message.data_len = 0; ++ bmc->tx_message.data = NULL; ++ ++ ipmisensors_send_message(bmc, bmc->msgid++, &bmc->tx_message); ++} ++ ++/** ++ * Componse and send a "get SDR" message ++ * ++ * @bmc: the bmc to send the message to. ++ * @res_id: ++ * @record: ++ * @offset: ++ */ ++static void ipmisensors_get_sdr(struct ipmisensors_bmc_data *bmc, u16 res_id, ++ u16 record, u8 offset) ++{ ++ printk(KERN_DEBUG "ipmisensors: Get SDR 0x%x 0x%x 0x%x\n", ++ res_id, record, offset); ++ bmc->tx_message.netfn = IPMI_NETFN_STORAGE_REQUEST; ++ bmc->tx_message.cmd = IPMI_GET_SDR; ++ bmc->tx_message.data_len = 6; ++ bmc->tx_message.data = bmc->tx_msg_data; ++ bmc->tx_msg_data[0] = res_id & 0xff; ++ bmc->tx_msg_data[1] = res_id >> 8; ++ bmc->tx_msg_data[2] = record & 0xff; ++ bmc->tx_msg_data[3] = record >> 8; ++ bmc->tx_msg_data[4] = offset; ++ bmc->tx_msg_data[5] = bmc->ipmi_sdr_partial_size; ++ ++ ipmisensors_send_message(bmc, bmc->msgid++, &bmc->tx_message); ++} ++ ++/** ++ * Compose and send a "set sensor threshold" message ++ * ++ * @bmc: the bmc to send the message to. ++ * @id: the ipmi id number of the sensor. ++ * @value: the new value for the threshold. ++ * @lim_index: the index in the lim[] array for which this value applies. ++ */ ++static void ipmisensors_set_sensor_threshold(struct ipmisensors_bmc_data *bmc, ++ u8 number, int value, ++ int lim_index) ++{ ++ int i; ++ ++ printk(KERN_DEBUG "ipmisensors: Set SDR Threshold %d %d %d\n", ++ number, value, lim_index); ++ bmc->tx_message.netfn = IPMI_NETFN_STORAGE_REQUEST; ++ bmc->tx_message.cmd = IPMI_SET_SENSOR_THRESHOLD; ++ bmc->tx_message.data_len = 8; ++ bmc->tx_message.data = bmc->tx_msg_data; ++ bmc->tx_msg_data[0] = number & 0xff; ++ bmc->tx_msg_data[1] = 0x01 << lim_index; ++ ++ if (lim_index > 5 || lim_index < 0) { ++ printk(KERN_INFO ++ "ipmisensors: Error - ipmisensors_set_sensor_threshold given invalid lim_index\n"); ++ return; ++ } ++ ++ for (i = 2; i < 8; i++) ++ bmc->tx_msg_data[i] = 0x00; ++ ++ bmc->tx_msg_data[lim_index] = value && 0xff; ++ ++ ipmisensors_send_message(bmc, bmc->msgid++, &bmc->tx_message); ++} ++ ++/** ++ * Compose and send a "get sensor reading" message for the given sdr. ++ * ++ * @bmc: the bmc to send the message to. ++ * @sdr: the sdr of the sensor to get the reading for. ++ */ ++static void ipmisensors_get_reading(struct ipmisensors_bmc_data *bmc, ++ struct sdrdata *sdr) ++{ ++ bmc->tx_message.netfn = IPMI_NETFN_SENSOR_EVENT_REQUEST; ++ bmc->tx_message.cmd = IPMI_GET_SENSOR_STATE_READING; ++ bmc->tx_message.data_len = 1; ++ bmc->tx_message.data = bmc->tx_msg_data; ++ bmc->tx_msg_data[0] = sdr->number; ++ bmc->current_sdr = sdr; ++ ++ ipmisensors_send_message(bmc, bmc->msgid++, &bmc->tx_message); ++ down_interruptible(&bmc->update_semaphore); ++} ++ ++/****** IPMI Message Receiving ******/ ++ ++/** ++ * Process an sensor reading response message. ++ * ++ * @bmc: the bmc the message is from ++ * @msg: the IPMI SDR response message ++ */ ++static void ipmisensors_rcv_reading_msg(struct ipmisensors_bmc_data *bmc, ++ struct kernel_ipmi_msg *msg) ++{ ++ struct sdrdata *sdr = bmc->current_sdr; ++ ++ if (sdr == NULL) { ++ printk(KERN_ERR ++ "ipmisensors: Error ipmisensors_rcv_reading with NULL sdr\n"); ++ return; ++ } ++ ++ sdr->reading = msg->data[1]; ++ sdr->status = msg->data[2]; ++ sdr->thresholds = msg->data[3]; ++ ++ printk(KERN_DEBUG "ipmisensors: sensor %d (type %d) reading %d\n", ++ sdr->number, sdr->stype, msg->data[1]); ++ ++ up(&bmc->update_semaphore); ++} ++ ++/** ++ * Unpack based on string type, convert to normal, null terminate. ++ */ ++static void ipmisensors_sprintf(u8 * to, u8 * from, u8 type, u8 length) ++{ ++ static const u8 *bcdplus = "0123456789 -.:,_"; ++ int i; ++ ++ switch (type) { ++ case 0: /* unicode */ ++ for (i = 0; i < length; i++) ++ *to++ = (*from++ & 0x7f); ++ *to = 0; ++ break; ++ case 1: /* BCD Plus */ ++ for (i = 0; i < length; i++) ++ *to++ = bcdplus[*from++ & 0x0f]; ++ *to = 0; ++ break; ++ case 2: /* packed ascii *//* if not a mult. of 3 this will run over */ ++ for (i = 0; i < length; i += 3) { ++ *to++ = *from & 0x3f; ++ *to++ = *from >> 6 | ((*(from+1) & 0xf) << 2); ++ from++; ++ *to++ = *from >> 4 | ((*(from+1) & 0x3) << 4); ++ from++; ++ *to++ = (*from++ >> 2) & 0x3f; ++ } ++ *to = 0; ++ break; ++ case 3: /* normal */ ++ if (length > 1) ++ memcpy(to, from, length); ++ to[length] = 0; ++ break; ++ } ++} ++ ++/* IPMI V1.5 Section 30 */ ++static const int exps[] = ++ { 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000 }; ++ ++/* Return 0 for fan, 2 for temp, 3 for voltage ++ We could make it variable based on the accuracy (= log10(m * 10**k2)); ++ this would work for /proc output, however libsensors resolution ++ is statically set in lib/chips.c */ ++static int decplaces(struct sdrdata *sd) ++{ ++ switch (sd->stype) { ++ case STYPE_TEMP: ++ return 2; ++ case STYPE_CURR: ++ case STYPE_VOLT: ++ return 3; ++ case STYPE_FAN: ++ default: ++ return 0; ++ } ++} ++ ++/* convert a raw value to a reading. IMPI V1.5 Section 30 */ ++static long conv_val(int value, struct sdrdata *sd) ++{ ++ u8 k1, k2; ++ long r; ++ ++ r = value * sd->m; ++ k1 = sd->k & 0x0f; ++ k2 = sd->k >> 4; ++ if (k1 < 8) ++ r += sd->b * exps[k1]; ++ else ++ r += sd->b / exps[16 - k1]; ++ r *= exps[decplaces(sd)]; ++ if (k2 < 8) { ++ if (sd->linear != 7) ++ r *= exps[k2]; ++ else ++ /* this will always truncate to 0: r = 1 / (exps[k2] * r); */ ++ r = 0; ++ } else { ++ if (sd->linear != 7) ++ r /= exps[16 - k2]; ++ else { ++ if (r != 0) ++ /* 1 / x * 10 ** (-m) == 10 ** m / x */ ++ r = exps[16 - k2] / r; ++ else ++ r = 0; ++ } ++ } ++ ++ return r; ++} ++ ++static const char *threshold_text[] = { ++ "upper non-recoverable threshold", ++ "upper critical threshold", ++ "upper non-critical threshold", ++ "lower non-recoverable threshold", ++ "lower critical threshold", ++ "lower non-critical threshold", ++ "positive-going hysteresis", ++ "negative-going hysteresis" /* unused */ ++}; ++ ++/* select two out of the 8 possible readable thresholds, and place indexes into the limits ++ array into lim1 and lim2. Set writable flags */ ++static void ipmisensors_select_thresholds(struct sdrdata *sd) ++{ ++ u8 capab = sd->capab; ++ u16 mask = sd->thresh_mask; ++ int tmp; ++ ++ sd->lim1 = -1; ++ sd->lim2 = -1; ++ sd->lim1_write = 0; ++ sd->lim2_write = 0; ++ ++ if (((capab & 0x0c) == 0x04) || /* readable thresholds ? */ ++ ((capab & 0x0c) == 0x08)) { ++ /* select upper threshold */ ++ if (mask & 0x10) { /* upper crit */ ++ sd->lim1 = 1; ++ if ((capab & 0x0c) == 0x08 && (mask & 0x1000)) ++ sd->lim1_write = 1; ++ } else if (mask & 0x20) { /* upper non-recov */ ++ sd->lim1 = 0; ++ if ((capab & 0x0c) == 0x08 && (mask & 0x2000)) ++ sd->lim1_write = 1; ++ } else if (mask & 0x08) { /* upper non-crit */ ++ sd->lim1 = 2; ++ if ((capab & 0x0c) == 0x08 && (mask & 0x0800)) ++ sd->lim1_write = 1; ++ } ++ ++ /* select lower threshold */ ++ if ((((capab & 0x30) == 0x10) || /* readable ? */ ++ ((capab & 0x30) == 0x20)) && /* pos hyst */ ++ sd->stype == STYPE_TEMP) ++ sd->lim2 = 6; ++ else if (mask & 0x02) { /* lower crit */ ++ sd->lim2 = 4; ++ if ((capab & 0x0c) == 0x08 && (mask & 0x0200)) ++ sd->lim2_write = 1; ++ } else if (mask & 0x04) { /* lower non-recov */ ++ sd->lim2 = 3; ++ if ((capab & 0x0c) == 0x08 && (mask & 0x0400)) ++ sd->lim2_write = 1; ++ } else if (mask & 0x01) { /* lower non-crit */ ++ sd->lim2 = 5; ++ if ((capab & 0x0c) == 0x08 && (mask & 0x0100)) ++ sd->lim2_write = 1; ++ } ++ } ++ ++ /* swap lim1/lim2 if m < 0 or function is 1/x (but not both!) */ ++ if ((sd->m < 0 && sd->linear != 7) || (sd->m >= 0 && sd->linear == 7)) { ++ tmp = sd->lim1; ++ sd->lim1 = sd->lim2; ++ sd->lim2 = tmp; ++ } ++ ++ if (sd->lim1 >= 0) ++ printk(KERN_INFO "ipmisensors: using %s for upper limit\n", ++ threshold_text[sd->lim1]); ++ else ++ printk(KERN_DEBUG "ipmisensors: no readable upper limit\n"); ++ ++ if (sd->lim2 >= 0) ++ printk(KERN_INFO "ipmisensors: using %s for lower limit\n", ++ threshold_text[sd->lim2]); ++ else ++ printk(KERN_DEBUG "ipmisensors: no readable lower limit\n"); ++} ++ ++/************* sysfs callback functions *********/ ++static ssize_t show_update_period(struct device *dev, ++ struct device_attribute *attr, char *buf) ++{ ++ struct ipmisensors_bmc_device_attribute *aattr = ++ to_ipmisensors_bmc_dev_attr(attr); ++ ++ return snprintf(buf, 20, "%d\n", aattr->bmc->update_period); ++} ++ ++static ssize_t store_update_period(struct device *dev, ++ struct device_attribute *attr, ++ const char *buf, size_t count) ++{ ++ struct ipmisensors_bmc_device_attribute *aattr = ++ to_ipmisensors_bmc_dev_attr(attr); ++ ++ aattr->bmc->update_period = simple_strtoul(buf, NULL, 10);; ++ return count; ++}; ++ ++static ssize_t show_sensor(struct device *dev, struct device_attribute *attr, ++ char *buf) ++{ ++ struct ipmisensors_device_attribute *sattr = ++ to_ipmisensors_dev_attr(attr); ++ return snprintf(buf, 20, "%ld\n", ++ conv_val(sattr->sdr->reading, sattr->sdr)); ++} ++ ++static ssize_t show_sensor_max(struct device *dev, ++ struct device_attribute *attr, char *buf) ++{ ++ long max = 0; ++ struct ipmisensors_device_attribute *sattr = ++ to_ipmisensors_dev_attr(attr); ++ ++ if (sattr->sdr->lim1 >= 0) ++ max = conv_val(sattr->sdr->limits[sattr->sdr->lim1], ++ sattr->sdr); ++ return snprintf(buf, 20, "%ld\n", max); ++} ++ ++static ssize_t show_sensor_min(struct device *dev, ++ struct device_attribute *attr, char *buf) ++{ ++ long min = 0; ++ struct ipmisensors_device_attribute *sattr = ++ to_ipmisensors_dev_attr(attr); ++ ++ if (sattr->sdr->lim2 >= 0) ++ min = conv_val(sattr->sdr->limits[sattr->sdr->lim2], ++ sattr->sdr); ++ return snprintf(buf, 20, "%ld\n", min); ++}; ++ ++static ssize_t show_sensor_label(struct device *dev, ++ struct device_attribute *attr, char *buf) ++{ ++ u8 label[SDR_MAX_UNPACKED_ID_LENGTH]; ++ struct ipmisensors_device_attribute *sattr = ++ to_ipmisensors_dev_attr(attr); ++ ++ ipmisensors_sprintf(label, sattr->sdr->id, sattr->sdr->string_type, ++ sattr->sdr->id_length); ++ return snprintf(buf, 20, "%s\n", label); ++}; ++ ++static ssize_t store_sensor_max(struct device *dev, ++ struct device_attribute *attr, const char *buf, ++ size_t count) ++{ ++ long val = simple_strtoul(buf, NULL, 10); ++ struct ipmisensors_device_attribute *sattr = ++ to_ipmisensors_dev_attr(attr); ++ printk(KERN_DEBUG "ipmisensors: set max on sensor #%d to %ld", ++ sattr->sdr->number, val); ++ ipmisensors_set_sensor_threshold(sattr->sdr->bmc, sattr->sdr->number, ++ val, sattr->sdr->lim1); ++ return count; ++}; ++ ++static ssize_t store_sensor_min(struct device *dev, ++ struct device_attribute *attr, const char *buf, ++ size_t count) ++{ ++ long val = simple_strtoul(buf, NULL, 10); ++ struct ipmisensors_device_attribute *sattr = ++ to_ipmisensors_dev_attr(attr); ++ printk(KERN_DEBUG "ipmisensors: set min on sensor #%d to %ld", ++ sattr->sdr->number, val); ++ ipmisensors_set_sensor_threshold(sattr->sdr->bmc, sattr->sdr->number, ++ val, sattr->sdr->lim2); ++ return count; ++}; ++ ++static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, ++ char *buf) ++{ ++ struct ipmisensors_bmc_device_attribute *aattr = ++ to_ipmisensors_bmc_dev_attr(attr); ++ return snprintf(buf, 20, "%d\n", aattr->bmc->alarms); ++}; ++ ++static ssize_t show_name(struct device *dev, struct device_attribute *attr, ++ char *buf) ++{ ++ return snprintf(buf, 20, "%s\n", driver_data.driver_name); ++}; ++ ++/* work function to build the sysfs entries using the ipmi sdrs */ ++static void ipmisensors_build_sysfs(struct work_struct *work) ++{ ++ int temps = 0, volts = 0, currs = 0, fans = 0; ++ struct sdrdata *cursor, *next; ++ struct ipmisensors_bmc_data *bmc = container_of(work, struct ipmisensors_bmc_data, sysfs_work); ++ ++ /* find and create entries for each sdr data struct */ ++ list_for_each_entry_safe(cursor, next, &bmc->sdrs, list) { ++ u8 id[SDR_MAX_UNPACKED_ID_LENGTH]; ++ ++ cursor->attr_name = ++ (char *)kmalloc(sizeof(char) * MAX_FILENAME_LENGTH, ++ GFP_KERNEL); ++ cursor->attr_max_name = ++ (char *)kmalloc(sizeof(char) * MAX_FILENAME_LENGTH, ++ GFP_KERNEL); ++ cursor->attr_min_name = ++ (char *)kmalloc(sizeof(char) * MAX_FILENAME_LENGTH, ++ GFP_KERNEL); ++ ++ if (cursor->id_length > 0) { ++ cursor->attr_label_name = ++ (char *)kmalloc(sizeof(char) * MAX_FILENAME_LENGTH, ++ GFP_KERNEL); ++ ++ if (cursor->attr_label_name == NULL) { ++ printk(KERN_INFO ++ "ipmisensors: Out of memory (kmalloc failed)"); ++ kfree(cursor->attr_name); ++ kfree(cursor->attr_max_name); ++ kfree(cursor->attr_min_name); ++ return; ++ } ++ } ++ ++ if (cursor->attr_name == NULL || cursor->attr_max_name == NULL ++ || cursor->attr_min_name == NULL ++ || cursor->attr_label_name == NULL) { ++ printk(KERN_INFO ++ "ipmisensors: Out of memory (kmalloc failed)"); ++ kfree(cursor->attr_name); ++ kfree(cursor->attr_max_name); ++ kfree(cursor->attr_min_name); ++ kfree(cursor->attr_label_name); ++ return; ++ } ++ ++ switch (cursor->stype) { ++ case (STYPE_TEMP): ++ /* create the name of the sensor */ ++ snprintf(cursor->attr_name, MAX_FILENAME_LENGTH, ++ "temp%d_input", ++temps); ++ /* create min, max attributes */ ++ snprintf(cursor->attr_max_name, MAX_FILENAME_LENGTH, ++ "temp%d_max", temps); ++ snprintf(cursor->attr_min_name, MAX_FILENAME_LENGTH, ++ "temp%d_min", temps); ++ /* create the label of the sensor */ ++ snprintf(cursor->attr_label_name, MAX_FILENAME_LENGTH, ++ "temp%d_label", temps); ++ break; ++ case (STYPE_VOLT): ++ /* create the name of the sensor */ ++ snprintf(cursor->attr_name, MAX_FILENAME_LENGTH, ++ "in%d_input", ++volts); ++ /* create min, max attributes */ ++ snprintf(cursor->attr_max_name, MAX_FILENAME_LENGTH, ++ "in%d_max", volts); ++ snprintf(cursor->attr_min_name, MAX_FILENAME_LENGTH, ++ "in%d_min", volts); ++ /* create the label of the sensor */ ++ snprintf(cursor->attr_label_name, MAX_FILENAME_LENGTH, ++ "in%d_label", volts); ++ break; ++ case (STYPE_CURR): ++ /* create the name of the sensor */ ++ snprintf(cursor->attr_name, MAX_FILENAME_LENGTH, ++ "curr%d_input", ++currs); ++ /* create min, max attributes */ ++ sprintf(cursor->attr_max_name, "curr%d_max", currs); ++ sprintf(cursor->attr_min_name, "curr%d_min", currs); ++ /* create the label of the sensor */ ++ snprintf(cursor->attr_label_name, MAX_FILENAME_LENGTH, ++ "curr%d_label", currs); ++ break; ++ case (STYPE_FAN): ++ /* create the name of the sensor */ ++ snprintf(cursor->attr_name, MAX_FILENAME_LENGTH, ++ "fan%d_input", ++fans); ++ /* create min, max attributes */ ++ sprintf(cursor->attr_max_name, "fan%d_max", fans); ++ sprintf(cursor->attr_min_name, "fan%d_min", fans); ++ /* create the label of the sensor */ ++ snprintf(cursor->attr_label_name, MAX_FILENAME_LENGTH, ++ "fan%d_label", fans); ++ break; ++ default: ++ printk(KERN_INFO "ipmisensors: unkown sensor type\n"); ++ continue; ++ } ++ ++ cursor->attr.dev_attr.attr.name = cursor->attr_name; ++ cursor->attr.dev_attr.attr.mode = S_IRUGO; ++ cursor->attr.dev_attr.attr.owner = THIS_MODULE; ++ cursor->attr.dev_attr.show = show_sensor; ++ cursor->attr.dev_attr.store = NULL; ++ cursor->attr.sdr = cursor; ++ ++ cursor->attr_min.dev_attr.attr.name = cursor->attr_min_name; ++ cursor->attr_min.dev_attr.attr.owner = THIS_MODULE; ++ cursor->attr_min.dev_attr.show = show_sensor_min; ++ cursor->attr_min.sdr = cursor; ++ ++ if (cursor->lim2_write) { ++ printk(KERN_INFO ++ "ipmisensors: You have a writable sensor threshold! Send me an e-mail at <yani.ioannou@gmail.com>.\n"); ++ cursor->attr_min.dev_attr.store = store_sensor_min; ++ cursor->attr_min.dev_attr.attr.mode = S_IWUSR | S_IRUGO; ++ } else { ++ cursor->attr_min.dev_attr.store = NULL; ++ cursor->attr_min.dev_attr.attr.mode = S_IRUGO; ++ } ++ ++ cursor->attr_max.dev_attr.attr.name = cursor->attr_max_name; ++ cursor->attr_max.dev_attr.attr.owner = THIS_MODULE; ++ cursor->attr_max.dev_attr.show = show_sensor_max; ++ cursor->attr_max.sdr = cursor; ++ ++ if (cursor->lim1_write) { ++ printk(KERN_INFO ++ "ipmisensors: You have a writable sensor threshold! Send me an e-mail at <yani.ioannou@gmail.com>.\n"); ++ cursor->attr_max.dev_attr.store = store_sensor_max; ++ cursor->attr_max.dev_attr.attr.mode = S_IWUSR | S_IRUGO; ++ } else { ++ cursor->attr_max.dev_attr.store = NULL; ++ cursor->attr_max.dev_attr.attr.mode = S_IRUGO; ++ } ++ ++ if (cursor->id_length > 0) { ++ cursor->attr_label.dev_attr.attr.name = ++ cursor->attr_label_name; ++ cursor->attr_label.dev_attr.attr.mode = S_IRUGO; ++ cursor->attr_label.dev_attr.attr.owner = THIS_MODULE; ++ cursor->attr_label.dev_attr.show = show_sensor_label; ++ cursor->attr_label.dev_attr.store = NULL; ++ cursor->attr_label.sdr = cursor; ++ } ++ ++ printk(KERN_INFO ++ "ipmisensors: registering sensor %d: (type 0x%.2x) " ++ "(fmt=%d; m=%d; b=%d; k1=%d; k2=%d; cap=0x%.2x; mask=0x%.4x)\n", ++ cursor->number, cursor->stype, cursor->format, cursor->m, ++ cursor->b, cursor->k & 0xf, cursor->k >> 4, ++ cursor->capab, cursor->thresh_mask); ++ ++ if (cursor->id_length > 0) { ++ ipmisensors_sprintf(id, cursor->id, cursor->string_type, ++ cursor->id_length); ++ switch (cursor->stype) { ++ case (STYPE_TEMP): ++ printk(KERN_INFO ++ "ipmisensors: sensors.conf: label temp%d \"%s\"\n", ++ temps, id); ++ break; ++ case (STYPE_VOLT): ++ printk(KERN_INFO ++ "ipmisensors: sensors.conf: label in%d \"%s\"\n", ++ volts, id); ++ break; ++ case (STYPE_CURR): ++ printk(KERN_INFO ++ "ipmisensors: sensors.conf: label curr%d \"%s\"\n", ++ currs, id); ++ break; ++ case (STYPE_FAN): ++ printk(KERN_INFO ++ "ipmisensors: sensors.conf: label fan%d \"%s\"\n", ++ fans, id); ++ break; ++ } ++ } ++ ++ ipmisensors_select_thresholds(cursor); ++ ++ if (cursor->linear != 0 && cursor->linear != 7) { ++ printk(KERN_INFO ++ "ipmisensors: sensor %d: nonlinear function 0x%.2x unsupported, expect bad results\n", ++ cursor->number, cursor->linear); ++ } ++ ++ if ((cursor->format & 0x03) == 0x02) { ++ printk(KERN_INFO ++ "ipmisensors: sensor %d: 1's complement format unsupported, expect bad results\n", ++ cursor->number); ++ } else if ((cursor->format & 0x03) == 0x03) { ++ printk(KERN_INFO ++ "ipmisensors: sensor %d: threshold sensor only, no readings available", ++ cursor->number); ++ } ++ ++ if (cursor->lim1_write || cursor->lim2_write) ++ cursor->attr.dev_attr.attr.mode = 0644; ++ else ++ cursor->attr.dev_attr.attr.mode = 0444; ++ ++ if (device_create_file(bmc->dev, &cursor->attr.dev_attr) < 0 ++ || device_create_file(bmc->dev, ++ &cursor->attr_min.dev_attr) < 0 ++ || device_create_file(bmc->dev, ++ &cursor->attr_max.dev_attr) < 0 ++ || (cursor->id_length > ++ 0 ? device_create_file(bmc->dev, ++ &cursor->attr_label.dev_attr) < ++ 0 : 0) ++ ) { ++ printk(KERN_INFO ++ "ipmisensors: sysfs file creation failed for SDR %d (%s).\n", ++ cursor->number, cursor->id); ++ kfree(cursor->attr_name); ++ kfree(cursor->attr_max_name); ++ kfree(cursor->attr_min_name); ++ kfree(cursor->attr_label_name); ++ return; ++ } ++ } ++ ++ bmc->alarms_attr.dev_attr.attr.name = "alarms"; ++ bmc->alarms_attr.dev_attr.attr.mode = S_IRUGO; ++ bmc->alarms_attr.dev_attr.attr.owner = THIS_MODULE; ++ bmc->alarms_attr.dev_attr.show = show_alarms; ++ bmc->alarms_attr.dev_attr.store = NULL; ++ bmc->alarms_attr.bmc = bmc; ++ ++ if (device_create_file(bmc->dev, &bmc->alarms_attr.dev_attr) < 0) { ++ printk(KERN_INFO ++ "ipmisensors: Failed to create sysfs entry 'alarms'"); ++ return; ++ } ++ ++ bmc->name_attr.attr.name = "name"; ++ bmc->name_attr.attr.mode = S_IRUGO; ++ bmc->name_attr.attr.owner = THIS_MODULE; ++ bmc->name_attr.show = show_name; ++ ++ if (device_create_file(bmc->dev, &bmc->name_attr) < 0) { ++ printk(KERN_INFO ++ "ipmisensors: Failed to create sysfs entry 'name'"); ++ return; ++ } ++ ++ bmc->update_attr.dev_attr.attr.name = "update_period"; ++ bmc->update_attr.dev_attr.attr.mode = S_IWUSR | S_IRUGO; ++ bmc->update_attr.dev_attr.attr.owner = THIS_MODULE; ++ bmc->update_attr.dev_attr.show = show_update_period; ++ bmc->update_attr.dev_attr.store = store_update_period; ++ bmc->update_attr.bmc = bmc; ++ ++ if (device_create_file(bmc->dev, &bmc->update_attr.dev_attr) < 0) { ++ printk(KERN_INFO ++ "ipmisensors: Failed to create sysfs entry 'update_period'"); ++ return; ++ } ++ ++ printk(KERN_INFO ++ "ipmisensors: registered %d temp, %d volt, %d current, %d fan sensors\n", ++ temps, volts, currs, fans); ++ ++ /* This completes the initialization. We can now kickoff the ++ * periodic update of the bmc sensor's values by scheduling ++ * the first work. ++ */ ++ queue_work(ipmisensors_workqueue, &bmc->update_work.work); ++ ++} ++ ++/** ++ * Process an SDR response message, save the SDRs we like in the sdr ++ * list for the given BMC. ++ * ++ * @bmc: the bmc the message is from ++ * @msg: the IPMI SDR response message ++ */ ++static void ipmisensors_rcv_sdr_msg(struct ipmisensors_bmc_data *bmc, ++ struct kernel_ipmi_msg *msg) ++{ ++ u16 record; ++ int type; ++ int stype; ++ int id_length; ++ int i; ++ int ipmi_ver = 0; ++ unsigned char *data; ++ u8 id[SDR_MAX_UNPACKED_ID_LENGTH]; ++ struct sdrdata *sdr; ++ ++ if (msg->data[0] != 0) { ++ /* cut request in half and try again */ ++ bmc->ipmi_sdr_partial_size /= 2; ++ if (bmc->ipmi_sdr_partial_size < 8) { ++ printk(KERN_INFO ++ "ipmisensors: IPMI buffers too small, giving up\n"); ++ bmc->state = STATE_DONE; ++ return; ++ } ++ printk(KERN_DEBUG ++ "ipmisensors: Reducing SDR request size to %d\n", ++ bmc->ipmi_sdr_partial_size); ++ ++ ipmisensors_get_sdr(bmc, 0, 0, 0); ++ bmc->state = STATE_SDR; ++ return; ++ } ++ if (bmc->ipmi_sdr_partial_size < IPMI_SDR_SIZE) { ++ if (bmc->rx_msg_data_offset == 0) { ++ memcpy(bmc->rx_msg_data, msg->data, ++ bmc->ipmi_sdr_partial_size + 3); ++ bmc->rx_msg_data_offset = ++ bmc->ipmi_sdr_partial_size + 3; ++ } else { ++ memcpy(bmc->rx_msg_data + bmc->rx_msg_data_offset, ++ msg->data + 3, bmc->ipmi_sdr_partial_size); ++ bmc->rx_msg_data_offset += bmc->ipmi_sdr_partial_size; ++ } ++ if (bmc->rx_msg_data_offset > bmc->rx_msg_data[7] + 7) { ++ /* got last chunk */ ++ bmc->rx_msg_data_offset = 0; ++ data = bmc->rx_msg_data; ++ } else { ++ /* get more */ ++ record = ++ (bmc->rx_msg_data[4] << 8) | bmc->rx_msg_data[3]; ++ ipmisensors_get_sdr(bmc, bmc->resid, record, ++ bmc->rx_msg_data_offset - 3); ++ bmc->state = STATE_SDR; ++ return; ++ } ++ } else { ++ /* got it in one chunk */ ++ data = msg->data; ++ } ++ ++ bmc->nextrecord = (data[2] << 8) | data[1]; ++ ++ /* If the ipmi version is 0.9 we have to remap some things. ++ * Yes this is very ugly, but we aren't the ones who ++ * implemented an incomplete spec! ++ */ ++ ipmi_ver = data[5]; ++ ++ type = data[6]; ++ /* known SDR type */ ++ if (type == 1 || type == 2) { ++ stype = data[(ipmi_ver == 0x90 ? 16 : 15)]; ++ /* known sensor type */ ++ if (stype <= STYPE_MAX) { ++ if (data[(ipmi_ver == 0x90 ? 17 : 16)] != 0x01) { ++ if (type == 1) ++ ipmisensors_sprintf(id, &data[51], ++ data[50] >> 6, ++ data[50] & 0x1f); ++ else ++ ipmisensors_sprintf(id, ++ &data[(ipmi_ver == ++ 0x90 ? 30 : ++ 35)], ++ data[(ipmi_ver == ++ 0x90 ? 29 : ++ 34)] >> 6, ++ data[(ipmi_ver == ++ 0x90 ? 29 : ++ 34)] & 0x1f); ++ printk(KERN_INFO ++ "ipmisensors: skipping non-threshold sensor \"%s\"\n", ++ id); ++ } else { ++ /* add entry to sdrd table */ ++ sdr = ipmisensors_new_sdr(); ++ if (!sdr) { ++ printk(KERN_ERR ++ "ipmisensors: could not allocate memory for new SDR"); ++ return; ++ } ++ sdr->bmc = bmc; ++ sdr->stype = stype; ++ sdr->number = data[10]; ++ sdr->capab = data[(ipmi_ver == 0x90 ? 15 : 14)]; ++ sdr->thresh_mask = ++ (((u16) data[(ipmi_ver == 0x90 ? 21 : 22)]) ++ << 8) | data[21]; ++ if (type == 1) { ++ sdr->format = ++ data[(ipmi_ver == ++ 0x90 ? 22 : 24)] >> 6; ++ sdr->linear = ++ data[(ipmi_ver == ++ 0x90 ? 25 : 26)] & 0x7f; ++ sdr->m = ++ data[(ipmi_ver == 0x90 ? 26 : 27)]; ++ sdr->m |= ((u16) ++ (data ++ [(ipmi_ver == ++ 0x90 ? 27 : 28)] ++ & 0xc0)) << 2; ++ if (sdr->m & 0x0200) { ++ /* sign extend */ ++ sdr->m |= 0xfc00; ++ } ++ sdr->b = ++ data[(ipmi_ver == 0x90 ? 28 : 29)]; ++ sdr->b |= ((u16) ++ (data ++ [(ipmi_ver == ++ 0x90 ? 29 : 30)] ++ & 0xc0)) << 2; ++ if (sdr->b & 0x0200) { ++ /* sign extend */ ++ sdr->b |= 0xfc00; ++ } ++ sdr->k = ++ data[(ipmi_ver == 0x90 ? 31 : 32)]; ++ sdr->nominal = ++ data[(ipmi_ver == 0x90 ? 33 : 34)]; ++ for (i = 0; i < SDR_LIMITS; i++) { ++ /* assume readable */ ++ sdr->limits[i] = ++ data[(ipmi_ver == ++ 0x90 ? 40 : 39) + i]; ++ } ++ sdr->string_type = data[50] >> 6; ++ id_length = data[50] & 0x1f; ++ memcpy(sdr->id, &data[51], id_length); ++ sdr->id_length = id_length; ++ } else { ++ sdr->m = 1; ++ sdr->b = 0; ++ sdr->k = 0; ++ sdr->string_type = ++ data[(ipmi_ver == ++ 0x90 ? 29 : 34)] >> 6; ++ id_length = data[34] & 0x1f; ++ if (id_length > 0) { ++ memcpy(sdr->id, ++ &data[(ipmi_ver == ++ 0x90 ? 30 : 35)], ++ id_length); ++ } ++ sdr->id_length = id_length; ++ /* limits?? */ ++ if (ipmi_ver == 0x90) { ++ memcpy(sdr->id, ++ &data[30], id_length); ++ sdr->id_length = id_length; ++ } ++ } ++ ipmisensors_add_sdr(bmc, sdr); ++ } ++ } ++ /* peek at the other SDR types */ ++ } else if (type == 0x10 || type == 0x11 || type == 0x12) { ++ ipmisensors_sprintf(id, data + 19, data[18] >> 6, ++ data[18] & 0x1f); ++ if (type == 0x10) { ++ printk(KERN_INFO ++ "ipmisensors: Generic Device acc=0x%x; slv=0x%x; lun=0x%x; type=0x%x; \"%s\"\n", ++ data[8], data[9], data[10], data[13], id); ++ } else if (type == 0x11) { ++ printk(KERN_INFO ++ "ipmisensors: FRU Device acc=0x%x; slv=0x%x; log=0x%x; ch=0x%x; type=0x%x; \"%s\"\n", ++ data[8], data[9], data[10], data[11], data[13], ++ id); ++ } else { ++ printk(KERN_INFO ++ "ipmisensors: Mgmt Ctllr Device slv=0x%x; \"%s\"\n", ++ data[8], id); ++ } ++ } else if (type == 0x14) { ++ printk(KERN_INFO ++ "ipmisensors: Message Channel Info Records:\n"); ++ for (i = 0; i < 8; i++) { ++ printk(KERN_INFO "ipmisensors: Channel %d info 0x%x\n", ++ i, data[9 + i]); ++ } ++ } else { ++ printk(KERN_INFO "ipmisensors: Skipping SDR type 0x%x\n", type); ++ } ++ if (ipmi_ver != 0x90) { ++ if (bmc->nextrecord >= 6224) { ++ /*YJ stop sensor scan on poweredge 1750 */ ++ bmc->nextrecord = 0xffff; ++ } ++ } ++ ++ if (bmc->nextrecord == 0xFFFF) { ++ if (bmc->sdr_count == 0) { ++ printk(KERN_INFO ++ "ipmisensors: No recognized sensors found.\n"); ++ bmc->state = STATE_DONE; ++ } else { ++ printk(KERN_INFO "ipmisensors: all sensors detected\n"); ++ bmc->state = STATE_SYSTABLE; ++ ++ /* Schedule sysfs build/registration work */ ++ INIT_WORK(&bmc->sysfs_work, ipmisensors_build_sysfs); ++ queue_work(ipmisensors_workqueue, &bmc->sysfs_work); ++ } ++ } else { ++ ipmisensors_get_sdr(bmc, 0, bmc->nextrecord, 0); ++ bmc->state = STATE_SDR; ++ } ++} ++ ++/** ++ * Process incoming messages based on internal state ++ * ++ * @bmc: the bmc the message is from. ++ * @msg: the ipmi message to process. ++ */ ++static void ipmisensors_rcv_msg(struct ipmisensors_bmc_data *bmc, ++ struct kernel_ipmi_msg *msg) ++{ ++ switch (bmc->state) { ++ case STATE_INIT: ++ case STATE_RESERVE: ++ bmc->resid = (((u16) msg->data[2]) << 8) | msg->data[1]; ++ ++ printk(KERN_DEBUG "ipmisensors: Got first resid 0x%.4x\n", ++ bmc->resid); ++ ++ ipmisensors_get_sdr(bmc, 0, 0, 0); ++ bmc->state = STATE_SDR; ++ break; ++ ++ case STATE_SDR: ++ case STATE_SDRPARTIAL: ++ ipmisensors_rcv_sdr_msg(bmc, msg); ++ break; ++ ++ case STATE_READING: ++ ipmisensors_rcv_reading_msg(bmc, msg); ++ break; ++ ++ case STATE_UNCANCEL: ++ bmc->resid = (((u16) msg->data[2]) << 8) | msg->data[1]; ++ ++ printk(KERN_DEBUG "ipmisensors: Got new resid 0x%.4x\n", ++ bmc->resid); ++ ++ bmc->rx_msg_data_offset = 0; ++ ipmisensors_get_sdr(bmc, 0, bmc->nextrecord, 0); ++ bmc->state = STATE_SDR; ++ break; ++ ++ case STATE_DONE: ++ case STATE_SYSTABLE: ++ break; ++ default: ++ bmc->state = STATE_INIT; ++ } ++} ++ ++/** ++ * Callback to handle a received IPMI message from a given BMC. ++ * ++ * @msg: the received message. ++ * @handler_data: a pointer to the particular bmc ipmisensors_bmc_data struct. ++ */ ++static void ipmisensors_msg_handler(struct ipmi_recv_msg *msg, ++ void *user_msg_data) ++{ ++ struct ipmisensors_bmc_data *bmc = ++ (struct ipmisensors_bmc_data *)user_msg_data; ++ ++ if (msg->msg.data[0] != 0) ++ printk(KERN_WARNING ++ "ipmisensors: Error 0x%x on cmd 0x%x/0x%x\n", ++ msg->msg.data[0], msg->msg.netfn, msg->msg.cmd); ++ ++ if (bmc != NULL && ipmisensors_intf_registered(bmc->interface_id)) { ++ if (bmc->state == STATE_SDR && ++ msg->msg.data[0] == IPMI_INVALID_RESERVATION_ID) { ++ /* reservation cancelled, get new resid */ ++ if (++bmc->errorcount > 275) { ++ printk(KERN_ERR ++ "ipmisensors: Too many reservations cancelled, giving up\n"); ++ bmc->state = STATE_DONE; ++ } else { ++ printk(KERN_DEBUG ++ "ipmisensors: resid 0x%04x cancelled, getting new one\n", ++ bmc->resid); ++ ++ ipmisensors_reserve_sdr(bmc); ++ bmc->state = STATE_UNCANCEL; ++ } ++ } else if (msg->msg.data[0] != IPMI_CC_NO_ERROR && ++ msg->msg.data[0] != IPMI_ERR_RETURNING_REQ_BYTES && ++ msg->msg.data[0] != IPMI_ERR_PROVIDING_RESPONSE) { ++ printk(KERN_ERR ++ "ipmisensors: Error 0x%x on cmd 0x%x/0x%x; state = %d; probably fatal.\n", ++ msg->msg.data[0], msg->msg.netfn & 0xfe, ++ msg->msg.cmd, bmc->state); ++ } else { ++ printk(KERN_DEBUG "ipmisensors: received message\n"); ++ ipmisensors_rcv_msg(bmc, &msg->msg); ++ } ++ ++ } else { ++ printk(KERN_WARNING ++ "ipmisensors: Response for non-registered BMC\n"); ++ if (bmc != NULL) ++ printk(KERN_DEBUG "ipmisensors: BMC ID: %d\n", ++ bmc->interface_id); ++ else ++ printk(KERN_DEBUG "ipmisensors: BMC NULL!\n"); ++ } ++ ++ ipmi_free_recv_msg(msg); ++} ++ ++/****** IPMI Interface Initialization ******/ ++ ++/** ++ * Return true if the given ipmi interface has been registered. ++ * ++ * @ipmi_intf: The IPMI interface number. ++ */ ++static int ipmisensors_intf_registered(int ipmi_intf) ++{ ++ int found = 0; ++ struct ipmisensors_bmc_data *cursor, *next; ++ ++ /* find and free the ipmisensors_bmc_data struct */ ++ list_for_each_entry_safe(cursor, next, &driver_data.bmc_data, list) { ++ if (cursor->interface_id == ipmi_intf) { ++ found++; ++ } ++ } ++ ++ return found; ++} ++ ++/** ++ * Return true if the given BMC has been registered. ++ * ++ * @bmc: The BMC device. ++ */ ++static int ipmisensors_bmc_registered(struct device *bmc) ++{ ++ int found = 0; ++ struct ipmisensors_bmc_data *cursor, *next; ++ ++ /* find and free the ipmisensors_bmc_data struct */ ++ list_for_each_entry_safe(cursor, next, &driver_data.bmc_data, list) { ++ if (cursor->dev == bmc) { ++ found++; ++ } ++ } ++ ++ return found; ++} ++ ++/** ++ * Register new IPMI BMC interface. Interface indpendent callback created ++ * for flexibility in adding new types of interface callbacks in future. ++ * ++ * @ipmi_intf: The IPMI interface number. ++ */ ++static void ipmisensors_register_bmc(int ipmi_intf, struct ipmi_addr *address) ++{ ++ int error; ++ ++ /* allocate a new ipmisensors_bmc_data struct */ ++ ++ struct ipmisensors_bmc_data *bmc = (struct ipmisensors_bmc_data *) ++ kmalloc(sizeof(struct ipmisensors_bmc_data), GFP_KERNEL); ++ ++ /* initialize members */ ++ INIT_LIST_HEAD(&bmc->sdrs); ++ bmc->interface_id = ipmi_intf; ++ ++ bmc->address = *address; ++ ++ bmc->sdr_count = 0; ++ bmc->msgid = 0; ++ bmc->ipmi_sdr_partial_size = IPMI_CHUNK_SIZE; ++ bmc->state = STATE_INIT; ++ bmc->errorcount = 0; ++ bmc->rx_msg_data_offset = 0; ++ bmc->dev = ipmi_get_bmcdevice(ipmi_intf); ++ ++ /* default to 3 second min update interval */ ++ bmc->update_period = 3; ++ ++ if (bmc->dev == NULL) { ++ printk(KERN_ERR ++ "ipmisensors: Error, couldn't get BMC device for interface %d\n", ++ bmc->interface_id); ++ kfree(bmc); ++ return; ++ } ++ ++ /* Create IPMI messaging interface user */ ++ error = ipmi_create_user(bmc->interface_id, &driver_data.ipmi_hndlrs, ++ bmc, &bmc->user); ++ if (error < 0) { ++ printk(KERN_ERR ++ "ipmisensors: Error, unable to register user with ipmi interface %d\n", ++ bmc->interface_id); ++ kfree(bmc); ++ return; ++ } ++ ++ /* Register the BMC as a HWMON class device */ ++ bmc->class_dev = hwmon_device_register(bmc->dev); ++ ++ if (IS_ERR(bmc->class_dev)) { ++ printk(KERN_ERR ++ "ipmisensors: Error, unable to register hwmon class device for interface %d\n", ++ bmc->interface_id); ++ kfree(bmc); ++ return; ++ } ++ ++ /* Register the BMC in the driver */ ++ if (ipmisensors_bmc_registered(bmc->dev)) { ++ printk(KERN_ERR ++ "ipmisensors: BMC on interface %d already registered\n", ++ bmc->interface_id); ++ hwmon_device_unregister(bmc->class_dev); ++ kfree(bmc); ++ return; ++ } ++ ++ ipmi_get_version(bmc->user, &bmc->ipmi_version_major, ++ &bmc->ipmi_version_minor); ++ ++ /* finally add the new bmc data to the bmc data list */ ++ list_add_tail(&bmc->list, &driver_data.bmc_data); ++ driver_data.interfaces++; ++ ++ printk(KERN_INFO ++ "ipmisensors: Registered IPMI %d.%d BMC over interface %d\n", ++ bmc->ipmi_version_major, ++ bmc->ipmi_version_minor, bmc->interface_id); ++ ++ /* Send a reserve SDR command to the bmc */ ++ ipmisensors_reserve_sdr(bmc); ++ ++ /* initialize the bmc's update work struct */ ++ INIT_DELAYED_WORK(&bmc->update_work, ipmisensors_update_bmc); ++} ++ ++/** ++ * Callback for when an IPMI BMC is gone. Interface indpendent callback created ++ * for flexibility in adding new types of interface callbacks in future. ++ * ++ * @ipmi_intf: The IPMI interface number. ++ */ ++static void ipmisensors_unregister_bmc(int ipmi_intf) ++{ ++ struct ipmisensors_bmc_data *cursor, *next; ++ ++ /* find and free the ipmisensors_bmc_data struct */ ++ list_for_each_entry_safe(cursor, next, &driver_data.bmc_data, list) { ++ if (cursor->interface_id == ipmi_intf) { ++ list_del(&cursor->list); ++ printk(KERN_DEBUG ++ "ipmisensors: cancelling queued work\n"); ++ /* cancel update work queued for this bmc */ ++ cancel_delayed_work(&cursor->update_work); ++ printk(KERN_DEBUG ++ "ipmisensors: waiting for update to finish\n"); ++ /* wait for readings to finish */ ++ while (cursor->state != STATE_DONE) ; ++ ++ device_remove_file(cursor->dev, ++ &cursor->alarms_attr.dev_attr); ++ device_remove_file(cursor->dev, ++ &cursor->update_attr.dev_attr); ++ hwmon_device_unregister(cursor->class_dev); ++ ipmisensors_sdr_cleanup(cursor); ++ ipmi_destroy_user(cursor->user); ++ ++ printk(KERN_INFO ++ "ipmisensors: Unegistered IPMI interface %d\n", ++ cursor->interface_id); ++ ++ kfree(cursor); ++ driver_data.interfaces--; ++ } ++ } ++ ++} ++ ++/** ++ * Unregister all registered bmcs. ++ */ ++static void ipmisensors_unregister_bmc_all(void) ++{ ++ struct ipmisensors_bmc_data *cursor, *next; ++ ++ /* find and free the ipmisensors_bmc_data struct */ ++ list_for_each_entry_safe(cursor, next, &driver_data.bmc_data, list) { ++ list_del(&cursor->list); ++ ++ /* cancel update work queued for this bmc */ ++ printk(KERN_DEBUG "ipmisensors: cancelling queued work\n"); ++ cancel_delayed_work(&cursor->update_work); ++ ++ printk(KERN_DEBUG ++ "ipmisensors: waiting for update to finish\n"); ++ /* wait for readings to finish */ ++ while (cursor->state != STATE_DONE) ; ++ ++ device_remove_file(cursor->dev, &cursor->alarms_attr.dev_attr); ++ device_remove_file(cursor->dev, &cursor->update_attr.dev_attr); ++ hwmon_device_unregister(cursor->class_dev); ++ ipmisensors_sdr_cleanup(cursor); ++ ipmi_destroy_user(cursor->user); ++ ++ printk(KERN_INFO ++ "ipmisensors: Unegistered IPMI interface %d\n", ++ cursor->interface_id); ++ ++ kfree(cursor); ++ } ++ ++ driver_data.interfaces = 0; ++} ++ ++/** ++ * Callback for when a new IPMI SMI type interface is found. ++ * ++ * @if_num: The IPMI interface number. ++ */ ++static void ipmisensors_new_smi(int if_num, struct device *dev) ++{ ++ struct ipmi_addr smi_address = { ++ IPMI_SYSTEM_INTERFACE_ADDR_TYPE, ++ IPMI_BMC_CHANNEL, ++ {0}, ++ }; ++ ++ /* calls the generic new interface function */ ++ ipmisensors_register_bmc(if_num, &smi_address); ++} ++ ++/** ++ * Callback for when an exisiting IPMI SMI type interface is gone. ++ * ++ * @if_num: The IPMI interface number. ++ */ ++static void ipmisensors_smi_gone(int if_num) ++{ ++ if (driver_data.interfaces > 0) { ++ ipmisensors_unregister_bmc(if_num); ++ } ++} ++ ++/** ++ * Initialize the module. ++ */ ++static int __init ipmisensors_init(void) ++{ ++ int error; ++ printk(KERN_INFO "ipmisensors - IPMI BMC sensors interface\n"); ++ ++ /* init cache managers */ ++ driver_data.sdrdata_cache = ++ kmem_cache_create("ipmisensors_sdrdata", sizeof(struct sdrdata), 0, ++ 0, NULL, NULL); ++ driver_data.sysfsattr_cache = ++ kmem_cache_create("ipmisensors_sysfsattr", ++ sizeof(struct ipmisensors_device_attribute), 0, 0, ++ NULL, NULL); ++ ++ if (!driver_data.sdrdata_cache || !driver_data.sysfsattr_cache) { ++ if (driver_data.sdrdata_cache) ++ kmem_cache_destroy(driver_data.sdrdata_cache); ++ if (driver_data.sysfsattr_cache) ++ kmem_cache_destroy(driver_data.sysfsattr_cache); ++ return -ENOMEM; ++ } ++ ++ /* register IPMI interface callback(s) */ ++ error = ipmi_smi_watcher_register(&driver_data.smi_watcher); ++ if (error) { ++ printk(KERN_WARNING ++ "ipmisensors: can't register smi watcher\n"); ++ return error; ++ } ++ ++ /* create work queue, keep it simple, single-threaded */ ++ ipmisensors_workqueue = ++ create_singlethread_workqueue("ipmisensors_workqueue"); ++ ++ return 0; ++} ++ ++/** ++ * Cleanup ++ */ ++static void ipmisensors_cleanup(void) ++{ ++ /* start cleanup */ ++ cleanup = 1; ++ ++ /* unregister bmcs */ ++ printk(KERN_DEBUG "ipmisensors: unregister bmcs\n"); ++ ipmi_smi_watcher_unregister(&driver_data.smi_watcher); ++ ipmisensors_unregister_bmc_all(); ++ ++ /* flush & destroy work queue */ ++ printk(KERN_DEBUG "ipmisensors: destroy workqueue\n"); ++ flush_workqueue(ipmisensors_workqueue); ++ destroy_workqueue(ipmisensors_workqueue); ++ ++ /* remove cache managers */ ++ if (driver_data.sdrdata_cache) ++ kmem_cache_destroy(driver_data.sdrdata_cache); ++ if (driver_data.sysfsattr_cache) ++ kmem_cache_destroy(driver_data.sysfsattr_cache); ++} ++ ++/** ++ * Cleanup and exit the module ++ */ ++static void __exit ipmisensors_exit(void) ++{ ++ ipmisensors_cleanup(); ++ printk(KERN_DEBUG "ipmisensors: cleanup finished\n"); ++} ++ ++MODULE_AUTHOR("Yani Ioannou <yani.ioannou@gmail.com>"); ++MODULE_DESCRIPTION("IPMI BMC sensors"); ++MODULE_LICENSE("GPL"); ++ ++module_init(ipmisensors_init); ++module_exit(ipmisensors_exit); +diff -rduNp linux-2.6.22.1.oorig2/drivers/hwmon/ipmisensors.h linux-2.6.22.1/drivers/hwmon/ipmisensors.h +--- linux-2.6.22.1.oorig2/drivers/hwmon/ipmisensors.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.22.1/drivers/hwmon/ipmisensors.h 2007-07-24 14:22:26.000000000 +0200 +@@ -0,0 +1,240 @@ ++/* ++ * ipmisensors.h - lm_sensors interface to IPMI sensors. ++ * ++ * Copyright (C) 2004-2006 Yani Ioannou <yani.ioannou@gmail.com> ++ * ++ * Adapted from bmcsensors (lm-sensors for linux 2.4) ++ * bmcsensors (C) Mark D. Studebaker <mdsxyz123@yahoo.com> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License as published by ++ * the Free Software Foundation; either version 2 of the License, or ++ * (at your option) any later version. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ * ++ * You should have received a copy of the GNU General Public License ++ * along with this program; if not, write to the Free Software ++ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. ++ */ ++ ++#include <linux/ipmi.h> ++#include <linux/list.h> ++#include <linux/slab.h> ++#include <linux/workqueue.h> ++ ++/* SDR defs */ ++#define STYPE_TEMP 0x01 ++#define STYPE_VOLT 0x02 ++#define STYPE_CURR 0x03 ++#define STYPE_FAN 0x04 ++ ++#define SDR_LIMITS 8 ++#define SDR_MAX_ID_LENGTH 16 ++#define SDR_MAX_UNPACKED_ID_LENGTH ((SDR_MAX_ID_LENGTH * 4 / 3) + 2) ++ ++/* the last sensor type we are interested in */ ++#define STYPE_MAX 4 ++ ++#define IPMI_SDR_SIZE 67 ++#define IPMI_CHUNK_SIZE 16 ++ ++#define MAX_FILENAME_LENGTH 30 ++ ++struct ipmisensors_device_attribute { ++ struct device_attribute dev_attr; ++ struct sdrdata *sdr; ++}; ++#define to_ipmisensors_dev_attr(_dev_attr) \ ++ container_of(_dev_attr, struct ipmisensors_device_attribute, dev_attr) ++ ++#define IPMISENSORS_DEVICE_ATTR(_name,_mode,_show,_store,_index) \ ++struct ipmisensors_attribute sensor_dev_attr_##_name = { \ ++ .dev_attr = __ATTR(_name,_mode,_show,_store), \ ++ .index = _index, \ ++} ++ ++struct ipmisensors_bmc_device_attribute { ++ struct device_attribute dev_attr; ++ struct ipmisensors_bmc_data *bmc; ++}; ++#define to_ipmisensors_bmc_dev_attr(_dev_attr) \ ++ container_of(_dev_attr, struct ipmisensors_bmc_device_attribute, dev_attr) ++ ++/** ++ * &struct_sdrdata stores the IPMI Sensor Data Record (SDR) data, as recieved from the BMC, along with the corresponding sysfs attributes ++ */ ++struct sdrdata { ++ struct list_head list; ++ /* retrieved from SDR, not expected to change */ ++ /* Sensor Type Code */ ++ u8 stype; ++ u8 number; ++ /* Sensor Capability Code */ ++ u8 capab; ++ u16 thresh_mask; ++ u8 format; ++ u8 linear; ++ s16 m; ++ s16 b; ++ u8 k; ++ u8 nominal; ++ u8 limits[SDR_LIMITS]; ++ /* index into limits for reported upper and lower limit */ ++ int lim1, lim2; ++ u8 lim1_write, lim2_write; ++ u8 string_type; ++ u8 id_length; ++ u8 id[SDR_MAX_ID_LENGTH]; ++ /* retrieved from reading */ ++ u8 reading; ++ u8 status; ++ u8 thresholds; ++ /* sensor's bmc */ ++ struct ipmisensors_bmc_data *bmc; ++ /* sysfs entries */ ++ struct ipmisensors_device_attribute attr; ++ char *attr_name; ++ struct ipmisensors_device_attribute attr_min; ++ char *attr_min_name; ++ struct ipmisensors_device_attribute attr_max; ++ char *attr_max_name; ++ struct ipmisensors_device_attribute attr_label; ++ char *attr_label_name; ++ ++}; ++ ++/** ++ * &struct_ipmisensors_data stores the data for the ipmisensors driver. ++ */ ++struct ipmisensors_data { ++ /* Driver struct */ ++ char *driver_name; ++ ++ /* Linked list of ipmisensors_bmc_data structs, one for each BMC */ ++ struct list_head bmc_data; ++ ++ /* Number of ipmi interfaces (and hence ipmisensors_data structs). */ ++ int interfaces; ++ ++ /* IPMI kernel interface - SMI watcher */ ++ struct ipmi_smi_watcher smi_watcher; ++ ++ /* IPMI kernel interface - user handlers */ ++ struct ipmi_user_hndl ipmi_hndlrs; ++ ++ /* Cache manager for sdrdata cache */ ++ struct kmem_cache *sdrdata_cache; ++ ++ /* Cache manager for ipmi_sensor_device_attribute cache */ ++ struct kmem_cache *sysfsattr_cache; ++}; ++ ++/** ++ * &states: enumeration of state codes for a bmc specific ipmisensors ++ */ ++enum states { ++ STATE_INIT, ++ STATE_RESERVE, ++ STATE_SDR, ++ STATE_SDRPARTIAL, ++ STATE_READING, ++ STATE_UNCANCEL, ++ STATE_SYSTABLE, ++ STATE_DONE ++}; ++ ++/** ++ * &struct_ipmisensors_bmc_data stores the data for a particular IPMI BMC. ++ */ ++struct ipmisensors_bmc_data { ++ struct list_head list; ++ ++ /* The IPMI interface number */ ++ int interface_id; ++ ++ /* The IPMI address */ ++ struct ipmi_addr address; ++ ++ /* List of sdrdata structs (sdrs) recieved from the BMC */ ++ struct list_head sdrs; ++ ++ /* Count of the number of sdrs stored in the sdr list */ ++ int sdr_count; ++ ++ /* next message id */ ++ int msgid; ++ ++ /* The ipmi interface 'user' used to access this particular bmc */ ++ ipmi_user_t user; ++ ++ /* BMC IPMI Version (major) */ ++ unsigned char ipmi_version_major; ++ ++ /* BMC IPMI Version (minor) */ ++ unsigned char ipmi_version_minor; ++ ++ /* The size of the SDR request message */ ++ int ipmi_sdr_partial_size; ++ ++ /* transmit message buffer */ ++ struct kernel_ipmi_msg tx_message; ++ ++ /* ipmi transmited data buffer */ ++ unsigned char tx_msg_data[IPMI_MAX_MSG_LENGTH + 50]; /* why the +50 in bmcsensors? */ ++ ++ /* ipmi recieved data buffer */ ++ unsigned char rx_msg_data[IPMI_MAX_MSG_LENGTH + 50]; ++ ++ /* current recieve buffer offset */ ++ int rx_msg_data_offset; ++ ++ /* The id of then next SDR record to read during update cycle */ ++ u16 nextrecord; ++ ++ /* BMC SDR Reservation ID */ ++ u16 resid; ++ ++ /* Alarm status */ ++ u8 alarms; ++ ++ /* The cumalative error count for this bmc */ ++ int errorcount; ++ ++ /* The current state of this bmc w.r.t. ipmisensors (see enum states) */ ++ int state; ++ ++ /* The current sdr for which a reading is pending */ ++ struct sdrdata *current_sdr; ++ ++ /* The BMC's device struct */ ++ struct device *dev; ++ ++ /* hwmon class device */ ++ struct class_device *class_dev; ++ ++ /* hwmon device name */ ++ struct device_attribute name_attr; ++ ++ /* alarms attribute */ ++ struct ipmisensors_bmc_device_attribute alarms_attr; ++ ++ /* update_period attribute */ ++ struct ipmisensors_bmc_device_attribute update_attr; ++ ++ /* lower bound on time between updates (in seconds) */ ++ unsigned int update_period; ++ ++ /* semaphore used to do a headcount of the SDR readings we are waiting ++ * on in a given bmc update */ ++ struct semaphore update_semaphore; ++ ++ /* bmc's work struct for updating sensors */ ++ struct delayed_work update_work; ++ ++ /* bmc's work struct for building the sysfs workqueue */ ++ struct work_struct sysfs_work; ++}; +diff -rduNp linux-2.6.22.1.oorig2/include/linux/ipmi.h linux-2.6.22.1/include/linux/ipmi.h +--- linux-2.6.22.1.oorig2/include/linux/ipmi.h 2007-07-10 20:56:30.000000000 +0200 ++++ linux-2.6.22.1/include/linux/ipmi.h 2007-07-24 14:22:26.000000000 +0200 +@@ -300,6 +300,9 @@ int ipmi_create_user(unsigned int + safe, too. */ + int ipmi_destroy_user(ipmi_user_t user); + ++/* Get the IPMI BMC's device struct */ ++struct device *ipmi_get_bmcdevice(int ipmi_intf); ++ + /* Get the IPMI version of the BMC we are talking to. */ + void ipmi_get_version(ipmi_user_t user, + unsigned char *major, +diff -rduNp linux-2.6.22.1.oorig2/include/linux/ipmi_msgdefs.h linux-2.6.22.1/include/linux/ipmi_msgdefs.h +--- linux-2.6.22.1.oorig2/include/linux/ipmi_msgdefs.h 2007-07-10 20:56:30.000000000 +0200 ++++ linux-2.6.22.1/include/linux/ipmi_msgdefs.h 2007-07-24 14:22:26.000000000 +0200 +@@ -45,6 +45,7 @@ + + #define IPMI_NETFN_APP_REQUEST 0x06 + #define IPMI_NETFN_APP_RESPONSE 0x07 ++#define IPMI_GET_DEVICE_GUID_CMD 0x08 + #define IPMI_GET_DEVICE_ID_CMD 0x01 + #define IPMI_COLD_RESET_CMD 0x02 + #define IPMI_WARM_RESET_CMD 0x03 +@@ -57,6 +58,11 @@ + #define IPMI_GET_BMC_GLOBAL_ENABLES_CMD 0x2f + #define IPMI_READ_EVENT_MSG_BUFFER_CMD 0x35 + #define IPMI_GET_CHANNEL_INFO_CMD 0x42 ++#define IPMI_RESERVE_SDR 0x22 ++#define IPMI_GET_SDR 0x23 ++#define IPMI_GET_SENSOR_STATE_READING 0x2D ++#define IPMI_SET_SENSOR_HYSTERESIS 0x24 ++#define IPMI_SET_SENSOR_THRESHOLD 0x26 + + #define IPMI_NETFN_STORAGE_REQUEST 0x0a + #define IPMI_NETFN_STORAGE_RESPONSE 0x0b +@@ -79,10 +85,13 @@ + #define IPMI_NODE_BUSY_ERR 0xc0 + #define IPMI_INVALID_COMMAND_ERR 0xc1 + #define IPMI_TIMEOUT_ERR 0xc3 ++#define IPMI_INVALID_RESERVATION_ID 0xc5 + #define IPMI_ERR_MSG_TRUNCATED 0xc6 + #define IPMI_REQ_LEN_INVALID_ERR 0xc7 + #define IPMI_REQ_LEN_EXCEEDED_ERR 0xc8 + #define IPMI_NOT_IN_MY_STATE_ERR 0xd5 /* IPMI 2.0 */ ++#define IPMI_ERR_RETURNING_REQ_BYTES 0xca ++#define IPMI_ERR_PROVIDING_RESPONSE 0xce + #define IPMI_LOST_ARBITRATION_ERR 0x81 + #define IPMI_BUS_ERR 0x82 + #define IPMI_NAK_ON_WRITE_ERR 0x83 |