aboutsummaryrefslogtreecommitdiff
path: root/toolchain/kernel-headers/ipmi
diff options
context:
space:
mode:
authorGravatar Ulf Samuelsson <ulf.samuelsson@atmel.com>2007-08-19 22:01:27 +0000
committerGravatar Ulf Samuelsson <ulf.samuelsson@atmel.com>2007-08-19 22:01:27 +0000
commit3978c675708a217ea9c390c84cc890d383253980 (patch)
tree08e9b1d7767335e96e304d7565fa2cfd52f86e0c /toolchain/kernel-headers/ipmi
parentcdb7c0167baa2bdaef34aa1049c77232877007a0 (diff)
downloadbuildroot-3978c675708a217ea9c390c84cc890d383253980.tar.gz
buildroot-3978c675708a217ea9c390c84cc890d383253980.tar.bz2
Make ipmi kernelpatch selectable, add possibility for custom kernel patch
Diffstat (limited to 'toolchain/kernel-headers/ipmi')
-rw-r--r--toolchain/kernel-headers/ipmi/linux-2.6.20.4-ipmisensors-20070314-1214.patch1914
-rw-r--r--toolchain/kernel-headers/ipmi/linux-2.6.21.5-007-ipmisensors-20070314-1214.patch1914
-rw-r--r--toolchain/kernel-headers/ipmi/linux-2.6.22.1-007-ipmisensors-20070314-1214.patch1914
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 0000000000..aca57c37b0
--- /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 0000000000..aca57c37b0
--- /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 0000000000..5fe74954f3
--- /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