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kumquat-buildroot/toolchain/kernel-headers/linux-2.6.20.3-ipmisensors-20070314-1214.patch
Bernhard Reutner-Fischer 0a967bae42 - add ipmisensors
2007-03-14 13:55:08 +00:00

6104 lines
173 KiB
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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/char/ipmi/ipmi_msghandler.c.orig linux-2.6.20.3/drivers/char/ipmi/ipmi_msghandler.c.orig
--- linux-2.6.20.3.orig/drivers/char/ipmi/ipmi_msghandler.c.orig 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.20.3/drivers/char/ipmi/ipmi_msghandler.c.orig 2007-03-14 14:22:33.000000000 +0100
@@ -0,0 +1,4185 @@
+/*
+ * ipmi_msghandler.c
+ *
+ * Incoming and outgoing message routing for an IPMI interface.
+ *
+ * Author: MontaVista Software, Inc.
+ * Corey Minyard <minyard@mvista.com>
+ * source@mvista.com
+ *
+ * Copyright 2002 MontaVista Software Inc.
+ *
+ * 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 SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+ * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+ * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * 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/module.h>
+#include <linux/errno.h>
+#include <asm/system.h>
+#include <linux/sched.h>
+#include <linux/poll.h>
+#include <linux/spinlock.h>
+#include <linux/mutex.h>
+#include <linux/slab.h>
+#include <linux/ipmi.h>
+#include <linux/ipmi_smi.h>
+#include <linux/notifier.h>
+#include <linux/init.h>
+#include <linux/proc_fs.h>
+#include <linux/rcupdate.h>
+
+#define PFX "IPMI message handler: "
+
+#define IPMI_DRIVER_VERSION "39.1"
+
+static struct ipmi_recv_msg *ipmi_alloc_recv_msg(void);
+static int ipmi_init_msghandler(void);
+
+static int initialized;
+
+#ifdef CONFIG_PROC_FS
+static struct proc_dir_entry *proc_ipmi_root;
+#endif /* CONFIG_PROC_FS */
+
+/* Remain in auto-maintenance mode for this amount of time (in ms). */
+#define IPMI_MAINTENANCE_MODE_TIMEOUT 30000
+
+#define MAX_EVENTS_IN_QUEUE 25
+
+/* Don't let a message sit in a queue forever, always time it with at lest
+ the max message timer. This is in milliseconds. */
+#define MAX_MSG_TIMEOUT 60000
+
+
+/*
+ * The main "user" data structure.
+ */
+struct ipmi_user
+{
+ struct list_head link;
+
+ /* Set to "0" when the user is destroyed. */
+ int valid;
+
+ struct kref refcount;
+
+ /* The upper layer that handles receive messages. */
+ struct ipmi_user_hndl *handler;
+ void *handler_data;
+
+ /* The interface this user is bound to. */
+ ipmi_smi_t intf;
+
+ /* Does this interface receive IPMI events? */
+ int gets_events;
+};
+
+struct cmd_rcvr
+{
+ struct list_head link;
+
+ ipmi_user_t user;
+ unsigned char netfn;
+ unsigned char cmd;
+ unsigned int chans;
+
+ /*
+ * This is used to form a linked lised during mass deletion.
+ * Since this is in an RCU list, we cannot use the link above
+ * or change any data until the RCU period completes. So we
+ * use this next variable during mass deletion so we can have
+ * a list and don't have to wait and restart the search on
+ * every individual deletion of a command. */
+ struct cmd_rcvr *next;
+};
+
+struct seq_table
+{
+ unsigned int inuse : 1;
+ unsigned int broadcast : 1;
+
+ unsigned long timeout;
+ unsigned long orig_timeout;
+ unsigned int retries_left;
+
+ /* To verify on an incoming send message response that this is
+ the message that the response is for, we keep a sequence id
+ and increment it every time we send a message. */
+ long seqid;
+
+ /* This is held so we can properly respond to the message on a
+ timeout, and it is used to hold the temporary data for
+ retransmission, too. */
+ struct ipmi_recv_msg *recv_msg;
+};
+
+/* Store the information in a msgid (long) to allow us to find a
+ sequence table entry from the msgid. */
+#define STORE_SEQ_IN_MSGID(seq, seqid) (((seq&0xff)<<26) | (seqid&0x3ffffff))
+
+#define GET_SEQ_FROM_MSGID(msgid, seq, seqid) \
+ do { \
+ seq = ((msgid >> 26) & 0x3f); \
+ seqid = (msgid & 0x3fffff); \
+ } while (0)
+
+#define NEXT_SEQID(seqid) (((seqid) + 1) & 0x3fffff)
+
+struct ipmi_channel
+{
+ unsigned char medium;
+ unsigned char protocol;
+
+ /* My slave address. This is initialized to IPMI_BMC_SLAVE_ADDR,
+ but may be changed by the user. */
+ unsigned char address;
+
+ /* My LUN. This should generally stay the SMS LUN, but just in
+ case... */
+ unsigned char lun;
+};
+
+#ifdef CONFIG_PROC_FS
+struct ipmi_proc_entry
+{
+ char *name;
+ struct ipmi_proc_entry *next;
+};
+#endif
+
+struct bmc_device
+{
+ struct platform_device *dev;
+ struct ipmi_device_id id;
+ unsigned char guid[16];
+ int guid_set;
+
+ struct kref refcount;
+
+ /* bmc device attributes */
+ struct device_attribute device_id_attr;
+ struct device_attribute provides_dev_sdrs_attr;
+ struct device_attribute revision_attr;
+ struct device_attribute firmware_rev_attr;
+ struct device_attribute version_attr;
+ struct device_attribute add_dev_support_attr;
+ struct device_attribute manufacturer_id_attr;
+ struct device_attribute product_id_attr;
+ struct device_attribute guid_attr;
+ struct device_attribute aux_firmware_rev_attr;
+};
+
+#define IPMI_IPMB_NUM_SEQ 64
+#define IPMI_MAX_CHANNELS 16
+struct ipmi_smi
+{
+ /* What interface number are we? */
+ int intf_num;
+
+ struct kref refcount;
+
+ /* Used for a list of interfaces. */
+ struct list_head link;
+
+ /* The list of upper layers that are using me. seq_lock
+ * protects this. */
+ struct list_head users;
+
+ /* Information to supply to users. */
+ unsigned char ipmi_version_major;
+ unsigned char ipmi_version_minor;
+
+ /* Used for wake ups at startup. */
+ wait_queue_head_t waitq;
+
+ struct bmc_device *bmc;
+ char *my_dev_name;
+ char *sysfs_name;
+
+ /* This is the lower-layer's sender routine. Note that you
+ * must either be holding the ipmi_interfaces_mutex or be in
+ * an umpreemptible region to use this. You must fetch the
+ * value into a local variable and make sure it is not NULL. */
+ struct ipmi_smi_handlers *handlers;
+ void *send_info;
+
+#ifdef CONFIG_PROC_FS
+ /* A list of proc entries for this interface. This does not
+ need a lock, only one thread creates it and only one thread
+ destroys it. */
+ spinlock_t proc_entry_lock;
+ struct ipmi_proc_entry *proc_entries;
+#endif
+
+ /* Driver-model device for the system interface. */
+ struct device *si_dev;
+
+ /* A table of sequence numbers for this interface. We use the
+ sequence numbers for IPMB messages that go out of the
+ interface to match them up with their responses. A routine
+ is called periodically to time the items in this list. */
+ spinlock_t seq_lock;
+ struct seq_table seq_table[IPMI_IPMB_NUM_SEQ];
+ int curr_seq;
+
+ /* Messages that were delayed for some reason (out of memory,
+ for instance), will go in here to be processed later in a
+ periodic timer interrupt. */
+ spinlock_t waiting_msgs_lock;
+ struct list_head waiting_msgs;
+
+ /* The list of command receivers that are registered for commands
+ on this interface. */
+ struct mutex cmd_rcvrs_mutex;
+ struct list_head cmd_rcvrs;
+
+ /* Events that were queues because no one was there to receive
+ them. */
+ spinlock_t events_lock; /* For dealing with event stuff. */
+ struct list_head waiting_events;
+ unsigned int waiting_events_count; /* How many events in queue? */
+ int delivering_events;
+
+ /* The event receiver for my BMC, only really used at panic
+ shutdown as a place to store this. */
+ unsigned char event_receiver;
+ unsigned char event_receiver_lun;
+ unsigned char local_sel_device;
+ unsigned char local_event_generator;
+
+ /* For handling of maintenance mode. */
+ int maintenance_mode;
+ int maintenance_mode_enable;
+ int auto_maintenance_timeout;
+ spinlock_t maintenance_mode_lock; /* Used in a timer... */
+
+ /* A cheap hack, if this is non-null and a message to an
+ interface comes in with a NULL user, call this routine with
+ it. Note that the message will still be freed by the
+ caller. This only works on the system interface. */
+ void (*null_user_handler)(ipmi_smi_t intf, struct ipmi_recv_msg *msg);
+
+ /* When we are scanning the channels for an SMI, this will
+ tell which channel we are scanning. */
+ int curr_channel;
+
+ /* Channel information */
+ struct ipmi_channel channels[IPMI_MAX_CHANNELS];
+
+ /* Proc FS stuff. */
+ struct proc_dir_entry *proc_dir;
+ char proc_dir_name[10];
+
+ spinlock_t counter_lock; /* For making counters atomic. */
+
+ /* Commands we got that were invalid. */
+ unsigned int sent_invalid_commands;
+
+ /* Commands we sent to the MC. */
+ unsigned int sent_local_commands;
+ /* Responses from the MC that were delivered to a user. */
+ unsigned int handled_local_responses;
+ /* Responses from the MC that were not delivered to a user. */
+ unsigned int unhandled_local_responses;
+
+ /* Commands we sent out to the IPMB bus. */
+ unsigned int sent_ipmb_commands;
+ /* Commands sent on the IPMB that had errors on the SEND CMD */
+ unsigned int sent_ipmb_command_errs;
+ /* Each retransmit increments this count. */
+ unsigned int retransmitted_ipmb_commands;
+ /* When a message times out (runs out of retransmits) this is
+ incremented. */
+ unsigned int timed_out_ipmb_commands;
+
+ /* This is like above, but for broadcasts. Broadcasts are
+ *not* included in the above count (they are expected to
+ time out). */
+ unsigned int timed_out_ipmb_broadcasts;
+
+ /* Responses I have sent to the IPMB bus. */
+ unsigned int sent_ipmb_responses;
+
+ /* The response was delivered to the user. */
+ unsigned int handled_ipmb_responses;
+ /* The response had invalid data in it. */
+ unsigned int invalid_ipmb_responses;
+ /* The response didn't have anyone waiting for it. */
+ unsigned int unhandled_ipmb_responses;
+
+ /* Commands we sent out to the IPMB bus. */
+ unsigned int sent_lan_commands;
+ /* Commands sent on the IPMB that had errors on the SEND CMD */
+ unsigned int sent_lan_command_errs;
+ /* Each retransmit increments this count. */
+ unsigned int retransmitted_lan_commands;
+ /* When a message times out (runs out of retransmits) this is
+ incremented. */
+ unsigned int timed_out_lan_commands;
+
+ /* Responses I have sent to the IPMB bus. */
+ unsigned int sent_lan_responses;
+
+ /* The response was delivered to the user. */
+ unsigned int handled_lan_responses;
+ /* The response had invalid data in it. */
+ unsigned int invalid_lan_responses;
+ /* The response didn't have anyone waiting for it. */
+ unsigned int unhandled_lan_responses;
+
+ /* The command was delivered to the user. */
+ unsigned int handled_commands;
+ /* The command had invalid data in it. */
+ unsigned int invalid_commands;
+ /* The command didn't have anyone waiting for it. */
+ unsigned int unhandled_commands;
+
+ /* Invalid data in an event. */
+ unsigned int invalid_events;
+ /* Events that were received with the proper format. */
+ unsigned int events;
+};
+#define to_si_intf_from_dev(device) container_of(device, struct ipmi_smi, dev)
+
+/**
+ * The driver model view of the IPMI messaging driver.
+ */
+static struct device_driver ipmidriver = {
+ .name = "ipmi",
+ .bus = &platform_bus_type
+};
+static DEFINE_MUTEX(ipmidriver_mutex);
+
+static struct list_head ipmi_interfaces = LIST_HEAD_INIT(ipmi_interfaces);
+static DEFINE_MUTEX(ipmi_interfaces_mutex);
+
+/* List of watchers that want to know when smi's are added and
+ deleted. */
+static struct list_head smi_watchers = LIST_HEAD_INIT(smi_watchers);
+static DEFINE_MUTEX(smi_watchers_mutex);
+
+
+static void free_recv_msg_list(struct list_head *q)
+{
+ struct ipmi_recv_msg *msg, *msg2;
+
+ list_for_each_entry_safe(msg, msg2, q, link) {
+ list_del(&msg->link);
+ ipmi_free_recv_msg(msg);
+ }
+}
+
+static void free_smi_msg_list(struct list_head *q)
+{
+ struct ipmi_smi_msg *msg, *msg2;
+
+ list_for_each_entry_safe(msg, msg2, q, link) {
+ list_del(&msg->link);
+ ipmi_free_smi_msg(msg);
+ }
+}
+
+static void clean_up_interface_data(ipmi_smi_t intf)
+{
+ int i;
+ struct cmd_rcvr *rcvr, *rcvr2;
+ struct list_head list;
+
+ free_smi_msg_list(&intf->waiting_msgs);
+ free_recv_msg_list(&intf->waiting_events);
+
+ /* Wholesale remove all the entries from the list in the
+ * interface and wait for RCU to know that none are in use. */
+ mutex_lock(&intf->cmd_rcvrs_mutex);
+ list_add_rcu(&list, &intf->cmd_rcvrs);
+ list_del_rcu(&intf->cmd_rcvrs);
+ mutex_unlock(&intf->cmd_rcvrs_mutex);
+ synchronize_rcu();
+
+ list_for_each_entry_safe(rcvr, rcvr2, &list, link)
+ kfree(rcvr);
+
+ for (i = 0; i < IPMI_IPMB_NUM_SEQ; i++) {
+ if ((intf->seq_table[i].inuse)
+ && (intf->seq_table[i].recv_msg))
+ {
+ ipmi_free_recv_msg(intf->seq_table[i].recv_msg);
+ }
+ }
+}
+
+static void intf_free(struct kref *ref)
+{
+ ipmi_smi_t intf = container_of(ref, struct ipmi_smi, refcount);
+
+ clean_up_interface_data(intf);
+ kfree(intf);
+}
+
+struct watcher_entry {
+ int intf_num;
+ ipmi_smi_t intf;
+ struct list_head link;
+};
+
+int ipmi_smi_watcher_register(struct ipmi_smi_watcher *watcher)
+{
+ ipmi_smi_t intf;
+ struct list_head to_deliver = LIST_HEAD_INIT(to_deliver);
+ struct watcher_entry *e, *e2;
+
+ mutex_lock(&smi_watchers_mutex);
+
+ mutex_lock(&ipmi_interfaces_mutex);
+
+ /* Build a list of things to deliver. */
+ list_for_each_entry_rcu(intf, &ipmi_interfaces, link) {
+ if (intf->intf_num == -1)
+ continue;
+ e = kmalloc(sizeof(*e), GFP_KERNEL);
+ if (!e)
+ goto out_err;
+ kref_get(&intf->refcount);
+ e->intf = intf;
+ e->intf_num = intf->intf_num;
+ list_add_tail(&e->link, &to_deliver);
+ }
+
+ /* We will succeed, so add it to the list. */
+ list_add(&watcher->link, &smi_watchers);
+
+ mutex_unlock(&ipmi_interfaces_mutex);
+
+ list_for_each_entry_safe(e, e2, &to_deliver, link) {
+ list_del(&e->link);
+ watcher->new_smi(e->intf_num, e->intf->si_dev);
+ kref_put(&e->intf->refcount, intf_free);
+ kfree(e);
+ }
+
+ mutex_unlock(&smi_watchers_mutex);
+
+ return 0;
+
+ out_err:
+ mutex_unlock(&ipmi_interfaces_mutex);
+ mutex_unlock(&smi_watchers_mutex);
+ list_for_each_entry_safe(e, e2, &to_deliver, link) {
+ list_del(&e->link);
+ kref_put(&e->intf->refcount, intf_free);
+ kfree(e);
+ }
+ return -ENOMEM;
+}
+
+int ipmi_smi_watcher_unregister(struct ipmi_smi_watcher *watcher)
+{
+ mutex_lock(&smi_watchers_mutex);
+ list_del(&(watcher->link));
+ mutex_unlock(&smi_watchers_mutex);
+ return 0;
+}
+
+/*
+ * Must be called with smi_watchers_mutex held.
+ */
+static void
+call_smi_watchers(int i, struct device *dev)
+{
+ struct ipmi_smi_watcher *w;
+
+ list_for_each_entry(w, &smi_watchers, link) {
+ if (try_module_get(w->owner)) {
+ w->new_smi(i, dev);
+ module_put(w->owner);
+ }
+ }
+}
+
+static int
+ipmi_addr_equal(struct ipmi_addr *addr1, struct ipmi_addr *addr2)
+{
+ if (addr1->addr_type != addr2->addr_type)
+ return 0;
+
+ if (addr1->channel != addr2->channel)
+ return 0;
+
+ if (addr1->addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) {
+ struct ipmi_system_interface_addr *smi_addr1
+ = (struct ipmi_system_interface_addr *) addr1;
+ struct ipmi_system_interface_addr *smi_addr2
+ = (struct ipmi_system_interface_addr *) addr2;
+ return (smi_addr1->lun == smi_addr2->lun);
+ }
+
+ if ((addr1->addr_type == IPMI_IPMB_ADDR_TYPE)
+ || (addr1->addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE))
+ {
+ struct ipmi_ipmb_addr *ipmb_addr1
+ = (struct ipmi_ipmb_addr *) addr1;
+ struct ipmi_ipmb_addr *ipmb_addr2
+ = (struct ipmi_ipmb_addr *) addr2;
+
+ return ((ipmb_addr1->slave_addr == ipmb_addr2->slave_addr)
+ && (ipmb_addr1->lun == ipmb_addr2->lun));
+ }
+
+ if (addr1->addr_type == IPMI_LAN_ADDR_TYPE) {
+ struct ipmi_lan_addr *lan_addr1
+ = (struct ipmi_lan_addr *) addr1;
+ struct ipmi_lan_addr *lan_addr2
+ = (struct ipmi_lan_addr *) addr2;
+
+ return ((lan_addr1->remote_SWID == lan_addr2->remote_SWID)
+ && (lan_addr1->local_SWID == lan_addr2->local_SWID)
+ && (lan_addr1->session_handle
+ == lan_addr2->session_handle)
+ && (lan_addr1->lun == lan_addr2->lun));
+ }
+
+ return 1;
+}
+
+int ipmi_validate_addr(struct ipmi_addr *addr, int len)
+{
+ if (len < sizeof(struct ipmi_system_interface_addr)) {
+ return -EINVAL;
+ }
+
+ if (addr->addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) {
+ if (addr->channel != IPMI_BMC_CHANNEL)
+ return -EINVAL;
+ return 0;
+ }
+
+ if ((addr->channel == IPMI_BMC_CHANNEL)
+ || (addr->channel >= IPMI_MAX_CHANNELS)
+ || (addr->channel < 0))
+ return -EINVAL;
+
+ if ((addr->addr_type == IPMI_IPMB_ADDR_TYPE)
+ || (addr->addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE))
+ {
+ if (len < sizeof(struct ipmi_ipmb_addr)) {
+ return -EINVAL;
+ }
+ return 0;
+ }
+
+ if (addr->addr_type == IPMI_LAN_ADDR_TYPE) {
+ if (len < sizeof(struct ipmi_lan_addr)) {
+ return -EINVAL;
+ }
+ return 0;
+ }
+
+ return -EINVAL;
+}
+
+unsigned int ipmi_addr_length(int addr_type)
+{
+ if (addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE)
+ return sizeof(struct ipmi_system_interface_addr);
+
+ if ((addr_type == IPMI_IPMB_ADDR_TYPE)
+ || (addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE))
+ {
+ return sizeof(struct ipmi_ipmb_addr);
+ }
+
+ if (addr_type == IPMI_LAN_ADDR_TYPE)
+ return sizeof(struct ipmi_lan_addr);
+
+ return 0;
+}
+
+static void deliver_response(struct ipmi_recv_msg *msg)
+{
+ if (!msg->user) {
+ ipmi_smi_t intf = msg->user_msg_data;
+ unsigned long flags;
+
+ /* Special handling for NULL users. */
+ if (intf->null_user_handler) {
+ intf->null_user_handler(intf, msg);
+ spin_lock_irqsave(&intf->counter_lock, flags);
+ intf->handled_local_responses++;
+ spin_unlock_irqrestore(&intf->counter_lock, flags);
+ } else {
+ /* No handler, so give up. */
+ spin_lock_irqsave(&intf->counter_lock, flags);
+ intf->unhandled_local_responses++;
+ spin_unlock_irqrestore(&intf->counter_lock, flags);
+ }
+ ipmi_free_recv_msg(msg);
+ } else {
+ ipmi_user_t user = msg->user;
+ user->handler->ipmi_recv_hndl(msg, user->handler_data);
+ }
+}
+
+static void
+deliver_err_response(struct ipmi_recv_msg *msg, int err)
+{
+ msg->recv_type = IPMI_RESPONSE_RECV_TYPE;
+ msg->msg_data[0] = err;
+ msg->msg.netfn |= 1; /* Convert to a response. */
+ msg->msg.data_len = 1;
+ msg->msg.data = msg->msg_data;
+ deliver_response(msg);
+}
+
+/* Find the next sequence number not being used and add the given
+ message with the given timeout to the sequence table. This must be
+ called with the interface's seq_lock held. */
+static int intf_next_seq(ipmi_smi_t intf,
+ struct ipmi_recv_msg *recv_msg,
+ unsigned long timeout,
+ int retries,
+ int broadcast,
+ unsigned char *seq,
+ long *seqid)
+{
+ int rv = 0;
+ unsigned int i;
+
+ for (i = intf->curr_seq;
+ (i+1)%IPMI_IPMB_NUM_SEQ != intf->curr_seq;
+ i = (i+1)%IPMI_IPMB_NUM_SEQ)
+ {
+ if (!intf->seq_table[i].inuse)
+ break;
+ }
+
+ if (!intf->seq_table[i].inuse) {
+ intf->seq_table[i].recv_msg = recv_msg;
+
+ /* Start with the maximum timeout, when the send response
+ comes in we will start the real timer. */
+ intf->seq_table[i].timeout = MAX_MSG_TIMEOUT;
+ intf->seq_table[i].orig_timeout = timeout;
+ intf->seq_table[i].retries_left = retries;
+ intf->seq_table[i].broadcast = broadcast;
+ intf->seq_table[i].inuse = 1;
+ intf->seq_table[i].seqid = NEXT_SEQID(intf->seq_table[i].seqid);
+ *seq = i;
+ *seqid = intf->seq_table[i].seqid;
+ intf->curr_seq = (i+1)%IPMI_IPMB_NUM_SEQ;
+ } else {
+ rv = -EAGAIN;
+ }
+
+ return rv;
+}
+
+/* Return the receive message for the given sequence number and
+ release the sequence number so it can be reused. Some other data
+ is passed in to be sure the message matches up correctly (to help
+ guard against message coming in after their timeout and the
+ sequence number being reused). */
+static int intf_find_seq(ipmi_smi_t intf,
+ unsigned char seq,
+ short channel,
+ unsigned char cmd,
+ unsigned char netfn,
+ struct ipmi_addr *addr,
+ struct ipmi_recv_msg **recv_msg)
+{
+ int rv = -ENODEV;
+ unsigned long flags;
+
+ if (seq >= IPMI_IPMB_NUM_SEQ)
+ return -EINVAL;
+
+ spin_lock_irqsave(&(intf->seq_lock), flags);
+ if (intf->seq_table[seq].inuse) {
+ struct ipmi_recv_msg *msg = intf->seq_table[seq].recv_msg;
+
+ if ((msg->addr.channel == channel)
+ && (msg->msg.cmd == cmd)
+ && (msg->msg.netfn == netfn)
+ && (ipmi_addr_equal(addr, &(msg->addr))))
+ {
+ *recv_msg = msg;
+ intf->seq_table[seq].inuse = 0;
+ rv = 0;
+ }
+ }
+ spin_unlock_irqrestore(&(intf->seq_lock), flags);
+
+ return rv;
+}
+
+
+/* Start the timer for a specific sequence table entry. */
+static int intf_start_seq_timer(ipmi_smi_t intf,
+ long msgid)
+{
+ int rv = -ENODEV;
+ unsigned long flags;
+ unsigned char seq;
+ unsigned long seqid;
+
+
+ GET_SEQ_FROM_MSGID(msgid, seq, seqid);
+
+ spin_lock_irqsave(&(intf->seq_lock), flags);
+ /* We do this verification because the user can be deleted
+ while a message is outstanding. */
+ if ((intf->seq_table[seq].inuse)
+ && (intf->seq_table[seq].seqid == seqid))
+ {
+ struct seq_table *ent = &(intf->seq_table[seq]);
+ ent->timeout = ent->orig_timeout;
+ rv = 0;
+ }
+ spin_unlock_irqrestore(&(intf->seq_lock), flags);
+
+ return rv;
+}
+
+/* Got an error for the send message for a specific sequence number. */
+static int intf_err_seq(ipmi_smi_t intf,
+ long msgid,
+ unsigned int err)
+{
+ int rv = -ENODEV;
+ unsigned long flags;
+ unsigned char seq;
+ unsigned long seqid;
+ struct ipmi_recv_msg *msg = NULL;
+
+
+ GET_SEQ_FROM_MSGID(msgid, seq, seqid);
+
+ spin_lock_irqsave(&(intf->seq_lock), flags);
+ /* We do this verification because the user can be deleted
+ while a message is outstanding. */
+ if ((intf->seq_table[seq].inuse)
+ && (intf->seq_table[seq].seqid == seqid))
+ {
+ struct seq_table *ent = &(intf->seq_table[seq]);
+
+ ent->inuse = 0;
+ msg = ent->recv_msg;
+ rv = 0;
+ }
+ spin_unlock_irqrestore(&(intf->seq_lock), flags);
+
+ if (msg)
+ deliver_err_response(msg, err);
+
+ return rv;
+}
+
+
+int ipmi_create_user(unsigned int if_num,
+ struct ipmi_user_hndl *handler,
+ void *handler_data,
+ ipmi_user_t *user)
+{
+ unsigned long flags;
+ ipmi_user_t new_user;
+ int rv = 0;
+ ipmi_smi_t intf;
+
+ /* There is no module usecount here, because it's not
+ required. Since this can only be used by and called from
+ other modules, they will implicitly use this module, and
+ thus this can't be removed unless the other modules are
+ removed. */
+
+ if (handler == NULL)
+ return -EINVAL;
+
+ /* Make sure the driver is actually initialized, this handles
+ problems with initialization order. */
+ if (!initialized) {
+ rv = ipmi_init_msghandler();
+ if (rv)
+ return rv;
+
+ /* The init code doesn't return an error if it was turned
+ off, but it won't initialize. Check that. */
+ if (!initialized)
+ return -ENODEV;
+ }
+
+ new_user = kmalloc(sizeof(*new_user), GFP_KERNEL);
+ if (!new_user)
+ return -ENOMEM;
+
+ mutex_lock(&ipmi_interfaces_mutex);
+ list_for_each_entry_rcu(intf, &ipmi_interfaces, link) {
+ if (intf->intf_num == if_num)
+ goto found;
+ }
+ /* Not found, return an error */
+ rv = -EINVAL;
+ goto out_kfree;
+
+ found:
+ /* Note that each existing user holds a refcount to the interface. */
+ kref_get(&intf->refcount);
+
+ kref_init(&new_user->refcount);
+ new_user->handler = handler;
+ new_user->handler_data = handler_data;
+ new_user->intf = intf;
+ new_user->gets_events = 0;
+
+ if (!try_module_get(intf->handlers->owner)) {
+ rv = -ENODEV;
+ goto out_kref;
+ }
+
+ if (intf->handlers->inc_usecount) {
+ rv = intf->handlers->inc_usecount(intf->send_info);
+ if (rv) {
+ module_put(intf->handlers->owner);
+ goto out_kref;
+ }
+ }
+
+ /* Hold the lock so intf->handlers is guaranteed to be good
+ * until now */
+ mutex_unlock(&ipmi_interfaces_mutex);
+
+ new_user->valid = 1;
+ spin_lock_irqsave(&intf->seq_lock, flags);
+ list_add_rcu(&new_user->link, &intf->users);
+ spin_unlock_irqrestore(&intf->seq_lock, flags);
+ *user = new_user;
+ return 0;
+
+out_kref:
+ kref_put(&intf->refcount, intf_free);
+out_kfree:
+ mutex_unlock(&ipmi_interfaces_mutex);
+ kfree(new_user);
+ return rv;
+}
+
+static void free_user(struct kref *ref)
+{
+ ipmi_user_t user = container_of(ref, struct ipmi_user, refcount);
+ kfree(user);
+}
+
+int ipmi_destroy_user(ipmi_user_t user)
+{
+ ipmi_smi_t intf = user->intf;
+ int i;
+ unsigned long flags;
+ struct cmd_rcvr *rcvr;
+ struct cmd_rcvr *rcvrs = NULL;
+
+ user->valid = 0;
+
+ /* Remove the user from the interface's sequence table. */
+ spin_lock_irqsave(&intf->seq_lock, flags);
+ list_del_rcu(&user->link);
+
+ for (i = 0; i < IPMI_IPMB_NUM_SEQ; i++) {
+ if (intf->seq_table[i].inuse
+ && (intf->seq_table[i].recv_msg->user == user))
+ {
+ intf->seq_table[i].inuse = 0;
+ ipmi_free_recv_msg(intf->seq_table[i].recv_msg);
+ }
+ }
+ spin_unlock_irqrestore(&intf->seq_lock, flags);
+
+ /*
+ * Remove the user from the command receiver's table. First
+ * we build a list of everything (not using the standard link,
+ * since other things may be using it till we do
+ * synchronize_rcu()) then free everything in that list.
+ */
+ mutex_lock(&intf->cmd_rcvrs_mutex);
+ list_for_each_entry_rcu(rcvr, &intf->cmd_rcvrs, link) {
+ if (rcvr->user == user) {
+ list_del_rcu(&rcvr->link);
+ rcvr->next = rcvrs;
+ rcvrs = rcvr;
+ }
+ }
+ mutex_unlock(&intf->cmd_rcvrs_mutex);
+ synchronize_rcu();
+ while (rcvrs) {
+ rcvr = rcvrs;
+ rcvrs = rcvr->next;
+ kfree(rcvr);
+ }
+
+ mutex_lock(&ipmi_interfaces_mutex);
+ if (intf->handlers) {
+ module_put(intf->handlers->owner);
+ if (intf->handlers->dec_usecount)
+ intf->handlers->dec_usecount(intf->send_info);
+ }
+ mutex_unlock(&ipmi_interfaces_mutex);
+
+ kref_put(&intf->refcount, intf_free);
+
+ kref_put(&user->refcount, free_user);
+
+ return 0;
+}
+
+void ipmi_get_version(ipmi_user_t user,
+ unsigned char *major,
+ unsigned char *minor)
+{
+ *major = user->intf->ipmi_version_major;
+ *minor = user->intf->ipmi_version_minor;
+}
+
+int ipmi_set_my_address(ipmi_user_t user,
+ unsigned int channel,
+ unsigned char address)
+{
+ if (channel >= IPMI_MAX_CHANNELS)
+ return -EINVAL;
+ user->intf->channels[channel].address = address;
+ return 0;
+}
+
+int ipmi_get_my_address(ipmi_user_t user,
+ unsigned int channel,
+ unsigned char *address)
+{
+ if (channel >= IPMI_MAX_CHANNELS)
+ return -EINVAL;
+ *address = user->intf->channels[channel].address;
+ return 0;
+}
+
+int ipmi_set_my_LUN(ipmi_user_t user,
+ unsigned int channel,
+ unsigned char LUN)
+{
+ if (channel >= IPMI_MAX_CHANNELS)
+ return -EINVAL;
+ user->intf->channels[channel].lun = LUN & 0x3;
+ return 0;
+}
+
+int ipmi_get_my_LUN(ipmi_user_t user,
+ unsigned int channel,
+ unsigned char *address)
+{
+ if (channel >= IPMI_MAX_CHANNELS)
+ return -EINVAL;
+ *address = user->intf->channels[channel].lun;
+ return 0;
+}
+
+int ipmi_get_maintenance_mode(ipmi_user_t user)
+{
+ int mode;
+ unsigned long flags;
+
+ spin_lock_irqsave(&user->intf->maintenance_mode_lock, flags);
+ mode = user->intf->maintenance_mode;
+ spin_unlock_irqrestore(&user->intf->maintenance_mode_lock, flags);
+
+ return mode;
+}
+EXPORT_SYMBOL(ipmi_get_maintenance_mode);
+
+static void maintenance_mode_update(ipmi_smi_t intf)
+{
+ if (intf->handlers->set_maintenance_mode)
+ intf->handlers->set_maintenance_mode(
+ intf->send_info, intf->maintenance_mode_enable);
+}
+
+int ipmi_set_maintenance_mode(ipmi_user_t user, int mode)
+{
+ int rv = 0;
+ unsigned long flags;
+ ipmi_smi_t intf = user->intf;
+
+ spin_lock_irqsave(&intf->maintenance_mode_lock, flags);
+ if (intf->maintenance_mode != mode) {
+ switch (mode) {
+ case IPMI_MAINTENANCE_MODE_AUTO:
+ intf->maintenance_mode = mode;
+ intf->maintenance_mode_enable
+ = (intf->auto_maintenance_timeout > 0);
+ break;
+
+ case IPMI_MAINTENANCE_MODE_OFF:
+ intf->maintenance_mode = mode;
+ intf->maintenance_mode_enable = 0;
+ break;
+
+ case IPMI_MAINTENANCE_MODE_ON:
+ intf->maintenance_mode = mode;
+ intf->maintenance_mode_enable = 1;
+ break;
+
+ default:
+ rv = -EINVAL;
+ goto out_unlock;
+ }
+
+ maintenance_mode_update(intf);
+ }
+ out_unlock:
+ spin_unlock_irqrestore(&intf->maintenance_mode_lock, flags);
+
+ return rv;
+}
+EXPORT_SYMBOL(ipmi_set_maintenance_mode);
+
+int ipmi_set_gets_events(ipmi_user_t user, int val)
+{
+ unsigned long flags;
+ ipmi_smi_t intf = user->intf;
+ struct ipmi_recv_msg *msg, *msg2;
+ struct list_head msgs;
+
+ INIT_LIST_HEAD(&msgs);
+
+ spin_lock_irqsave(&intf->events_lock, flags);
+ user->gets_events = val;
+
+ if (intf->delivering_events)
+ /*
+ * Another thread is delivering events for this, so
+ * let it handle any new events.
+ */
+ goto out;
+
+ /* Deliver any queued events. */
+ while (user->gets_events && !list_empty(&intf->waiting_events)) {
+ list_for_each_entry_safe(msg, msg2, &intf->waiting_events, link)
+ list_move_tail(&msg->link, &msgs);
+ intf->waiting_events_count = 0;
+
+ intf->delivering_events = 1;
+ spin_unlock_irqrestore(&intf->events_lock, flags);
+
+ list_for_each_entry_safe(msg, msg2, &msgs, link) {
+ msg->user = user;
+ kref_get(&user->refcount);
+ deliver_response(msg);
+ }
+
+ spin_lock_irqsave(&intf->events_lock, flags);
+ intf->delivering_events = 0;
+ }
+
+ out:
+ spin_unlock_irqrestore(&intf->events_lock, flags);
+
+ return 0;
+}
+
+static struct cmd_rcvr *find_cmd_rcvr(ipmi_smi_t intf,
+ unsigned char netfn,
+ unsigned char cmd,
+ unsigned char chan)
+{
+ struct cmd_rcvr *rcvr;
+
+ list_for_each_entry_rcu(rcvr, &intf->cmd_rcvrs, link) {
+ if ((rcvr->netfn == netfn) && (rcvr->cmd == cmd)
+ && (rcvr->chans & (1 << chan)))
+ return rcvr;
+ }
+ return NULL;
+}
+
+static int is_cmd_rcvr_exclusive(ipmi_smi_t intf,
+ unsigned char netfn,
+ unsigned char cmd,
+ unsigned int chans)
+{
+ struct cmd_rcvr *rcvr;
+
+ list_for_each_entry_rcu(rcvr, &intf->cmd_rcvrs, link) {
+ if ((rcvr->netfn == netfn) && (rcvr->cmd == cmd)
+ && (rcvr->chans & chans))
+ return 0;
+ }
+ return 1;
+}
+
+int ipmi_register_for_cmd(ipmi_user_t user,
+ unsigned char netfn,
+ unsigned char cmd,
+ unsigned int chans)
+{
+ ipmi_smi_t intf = user->intf;
+ struct cmd_rcvr *rcvr;
+ int rv = 0;
+
+
+ rcvr = kmalloc(sizeof(*rcvr), GFP_KERNEL);
+ if (!rcvr)
+ return -ENOMEM;
+ rcvr->cmd = cmd;
+ rcvr->netfn = netfn;
+ rcvr->chans = chans;
+ rcvr->user = user;
+
+ mutex_lock(&intf->cmd_rcvrs_mutex);
+ /* Make sure the command/netfn is not already registered. */
+ if (!is_cmd_rcvr_exclusive(intf, netfn, cmd, chans)) {
+ rv = -EBUSY;
+ goto out_unlock;
+ }
+
+ list_add_rcu(&rcvr->link, &intf->cmd_rcvrs);
+
+ out_unlock:
+ mutex_unlock(&intf->cmd_rcvrs_mutex);
+ if (rv)
+ kfree(rcvr);
+
+ return rv;
+}
+
+int ipmi_unregister_for_cmd(ipmi_user_t user,
+ unsigned char netfn,
+ unsigned char cmd,
+ unsigned int chans)
+{
+ ipmi_smi_t intf = user->intf;
+ struct cmd_rcvr *rcvr;
+ struct cmd_rcvr *rcvrs = NULL;
+ int i, rv = -ENOENT;
+
+ mutex_lock(&intf->cmd_rcvrs_mutex);
+ for (i = 0; i < IPMI_NUM_CHANNELS; i++) {
+ if (((1 << i) & chans) == 0)
+ continue;
+ rcvr = find_cmd_rcvr(intf, netfn, cmd, i);
+ if (rcvr == NULL)
+ continue;
+ if (rcvr->user == user) {
+ rv = 0;
+ rcvr->chans &= ~chans;
+ if (rcvr->chans == 0) {
+ list_del_rcu(&rcvr->link);
+ rcvr->next = rcvrs;
+ rcvrs = rcvr;
+ }
+ }
+ }
+ mutex_unlock(&intf->cmd_rcvrs_mutex);
+ synchronize_rcu();
+ while (rcvrs) {
+ rcvr = rcvrs;
+ rcvrs = rcvr->next;
+ kfree(rcvr);
+ }
+ return rv;
+}
+
+void ipmi_user_set_run_to_completion(ipmi_user_t user, int val)
+{
+ ipmi_smi_t intf = user->intf;
+ if (intf->handlers)
+ intf->handlers->set_run_to_completion(intf->send_info, val);
+}
+
+static unsigned char
+ipmb_checksum(unsigned char *data, int size)
+{
+ unsigned char csum = 0;
+
+ for (; size > 0; size--, data++)
+ csum += *data;
+
+ return -csum;
+}
+
+static inline void format_ipmb_msg(struct ipmi_smi_msg *smi_msg,
+ struct kernel_ipmi_msg *msg,
+ struct ipmi_ipmb_addr *ipmb_addr,
+ long msgid,
+ unsigned char ipmb_seq,
+ int broadcast,
+ unsigned char source_address,
+ unsigned char source_lun)
+{
+ int i = broadcast;
+
+ /* Format the IPMB header data. */
+ smi_msg->data[0] = (IPMI_NETFN_APP_REQUEST << 2);
+ smi_msg->data[1] = IPMI_SEND_MSG_CMD;
+ smi_msg->data[2] = ipmb_addr->channel;
+ if (broadcast)
+ smi_msg->data[3] = 0;
+ smi_msg->data[i+3] = ipmb_addr->slave_addr;
+ smi_msg->data[i+4] = (msg->netfn << 2) | (ipmb_addr->lun & 0x3);
+ smi_msg->data[i+5] = ipmb_checksum(&(smi_msg->data[i+3]), 2);
+ smi_msg->data[i+6] = source_address;
+ smi_msg->data[i+7] = (ipmb_seq << 2) | source_lun;
+ smi_msg->data[i+8] = msg->cmd;
+
+ /* Now tack on the data to the message. */
+ if (msg->data_len > 0)
+ memcpy(&(smi_msg->data[i+9]), msg->data,
+ msg->data_len);
+ smi_msg->data_size = msg->data_len + 9;
+
+ /* Now calculate the checksum and tack it on. */
+ smi_msg->data[i+smi_msg->data_size]
+ = ipmb_checksum(&(smi_msg->data[i+6]),
+ smi_msg->data_size-6);
+
+ /* Add on the checksum size and the offset from the
+ broadcast. */
+ smi_msg->data_size += 1 + i;
+
+ smi_msg->msgid = msgid;
+}
+
+static inline void format_lan_msg(struct ipmi_smi_msg *smi_msg,
+ struct kernel_ipmi_msg *msg,
+ struct ipmi_lan_addr *lan_addr,
+ long msgid,
+ unsigned char ipmb_seq,
+ unsigned char source_lun)
+{
+ /* Format the IPMB header data. */
+ smi_msg->data[0] = (IPMI_NETFN_APP_REQUEST << 2);
+ smi_msg->data[1] = IPMI_SEND_MSG_CMD;
+ smi_msg->data[2] = lan_addr->channel;
+ smi_msg->data[3] = lan_addr->session_handle;
+ smi_msg->data[4] = lan_addr->remote_SWID;
+ smi_msg->data[5] = (msg->netfn << 2) | (lan_addr->lun & 0x3);
+ smi_msg->data[6] = ipmb_checksum(&(smi_msg->data[4]), 2);
+ smi_msg->data[7] = lan_addr->local_SWID;
+ smi_msg->data[8] = (ipmb_seq << 2) | source_lun;
+ smi_msg->data[9] = msg->cmd;
+
+ /* Now tack on the data to the message. */
+ if (msg->data_len > 0)
+ memcpy(&(smi_msg->data[10]), msg->data,
+ msg->data_len);
+ smi_msg->data_size = msg->data_len + 10;
+
+ /* Now calculate the checksum and tack it on. */
+ smi_msg->data[smi_msg->data_size]
+ = ipmb_checksum(&(smi_msg->data[7]),
+ smi_msg->data_size-7);
+
+ /* Add on the checksum size and the offset from the
+ broadcast. */
+ smi_msg->data_size += 1;
+
+ smi_msg->msgid = msgid;
+}
+
+/* Separate from ipmi_request so that the user does not have to be
+ supplied in certain circumstances (mainly at panic time). If
+ messages are supplied, they will be freed, even if an error
+ occurs. */
+static int i_ipmi_request(ipmi_user_t user,
+ ipmi_smi_t intf,
+ struct ipmi_addr *addr,
+ long msgid,
+ struct kernel_ipmi_msg *msg,
+ void *user_msg_data,
+ void *supplied_smi,
+ struct ipmi_recv_msg *supplied_recv,
+ int priority,
+ unsigned char source_address,
+ unsigned char source_lun,
+ int retries,
+ unsigned int retry_time_ms)
+{
+ int rv = 0;
+ struct ipmi_smi_msg *smi_msg;
+ struct ipmi_recv_msg *recv_msg;
+ unsigned long flags;
+ struct ipmi_smi_handlers *handlers;
+
+
+ if (supplied_recv) {
+ recv_msg = supplied_recv;
+ } else {
+ recv_msg = ipmi_alloc_recv_msg();
+ if (recv_msg == NULL) {
+ return -ENOMEM;
+ }
+ }
+ recv_msg->user_msg_data = user_msg_data;
+
+ if (supplied_smi) {
+ smi_msg = (struct ipmi_smi_msg *) supplied_smi;
+ } else {
+ smi_msg = ipmi_alloc_smi_msg();
+ if (smi_msg == NULL) {
+ ipmi_free_recv_msg(recv_msg);
+ return -ENOMEM;
+ }
+ }
+
+ rcu_read_lock();
+ handlers = intf->handlers;
+ if (!handlers) {
+ rv = -ENODEV;
+ goto out_err;
+ }
+
+ recv_msg->user = user;
+ if (user)
+ kref_get(&user->refcount);
+ recv_msg->msgid = msgid;
+ /* Store the message to send in the receive message so timeout
+ responses can get the proper response data. */
+ recv_msg->msg = *msg;
+
+ if (addr->addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE) {
+ struct ipmi_system_interface_addr *smi_addr;
+
+ if (msg->netfn & 1) {
+ /* Responses are not allowed to the SMI. */
+ rv = -EINVAL;
+ goto out_err;
+ }
+
+ smi_addr = (struct ipmi_system_interface_addr *) addr;
+ if (smi_addr->lun > 3) {
+ spin_lock_irqsave(&intf->counter_lock, flags);
+ intf->sent_invalid_commands++;
+ spin_unlock_irqrestore(&intf->counter_lock, flags);
+ rv = -EINVAL;
+ goto out_err;
+ }
+
+ memcpy(&recv_msg->addr, smi_addr, sizeof(*smi_addr));
+
+ if ((msg->netfn == IPMI_NETFN_APP_REQUEST)
+ && ((msg->cmd == IPMI_SEND_MSG_CMD)
+ || (msg->cmd == IPMI_GET_MSG_CMD)
+ || (msg->cmd == IPMI_READ_EVENT_MSG_BUFFER_CMD)))
+ {
+ /* We don't let the user do these, since we manage
+ the sequence numbers. */
+ spin_lock_irqsave(&intf->counter_lock, flags);
+ intf->sent_invalid_commands++;
+ spin_unlock_irqrestore(&intf->counter_lock, flags);
+ rv = -EINVAL;
+ goto out_err;
+ }
+
+ if (((msg->netfn == IPMI_NETFN_APP_REQUEST)
+ && ((msg->cmd == IPMI_COLD_RESET_CMD)
+ || (msg->cmd == IPMI_WARM_RESET_CMD)))
+ || (msg->netfn == IPMI_NETFN_FIRMWARE_REQUEST))
+ {
+ spin_lock_irqsave(&intf->maintenance_mode_lock, flags);
+ intf->auto_maintenance_timeout
+ = IPMI_MAINTENANCE_MODE_TIMEOUT;
+ if (!intf->maintenance_mode
+ && !intf->maintenance_mode_enable)
+ {
+ intf->maintenance_mode_enable = 1;
+ maintenance_mode_update(intf);
+ }
+ spin_unlock_irqrestore(&intf->maintenance_mode_lock,
+ flags);
+ }
+
+ if ((msg->data_len + 2) > IPMI_MAX_MSG_LENGTH) {
+ spin_lock_irqsave(&intf->counter_lock, flags);
+ intf->sent_invalid_commands++;
+ spin_unlock_irqrestore(&intf->counter_lock, flags);
+ rv = -EMSGSIZE;
+ goto out_err;
+ }
+
+ smi_msg->data[0] = (msg->netfn << 2) | (smi_addr->lun & 0x3);
+ smi_msg->data[1] = msg->cmd;
+ smi_msg->msgid = msgid;
+ smi_msg->user_data = recv_msg;
+ if (msg->data_len > 0)
+ memcpy(&(smi_msg->data[2]), msg->data, msg->data_len);
+ smi_msg->data_size = msg->data_len + 2;
+ spin_lock_irqsave(&intf->counter_lock, flags);
+ intf->sent_local_commands++;
+ spin_unlock_irqrestore(&intf->counter_lock, flags);
+ } else if ((addr->addr_type == IPMI_IPMB_ADDR_TYPE)
+ || (addr->addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE))
+ {
+ struct ipmi_ipmb_addr *ipmb_addr;
+ unsigned char ipmb_seq;
+ long seqid;
+ int broadcast = 0;
+
+ if (addr->channel >= IPMI_MAX_CHANNELS) {
+ spin_lock_irqsave(&intf->counter_lock, flags);
+ intf->sent_invalid_commands++;
+ spin_unlock_irqrestore(&intf->counter_lock, flags);
+ rv = -EINVAL;
+ goto out_err;
+ }
+
+ if (intf->channels[addr->channel].medium
+ != IPMI_CHANNEL_MEDIUM_IPMB)
+ {
+ spin_lock_irqsave(&intf->counter_lock, flags);
+ intf->sent_invalid_commands++;
+ spin_unlock_irqrestore(&intf->counter_lock, flags);
+ rv = -EINVAL;
+ goto out_err;
+ }
+
+ if (retries < 0) {
+ if (addr->addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE)
+ retries = 0; /* Don't retry broadcasts. */
+ else
+ retries = 4;
+ }
+ if (addr->addr_type == IPMI_IPMB_BROADCAST_ADDR_TYPE) {
+ /* Broadcasts add a zero at the beginning of the
+ message, but otherwise is the same as an IPMB
+ address. */
+ addr->addr_type = IPMI_IPMB_ADDR_TYPE;
+ broadcast = 1;
+ }
+
+
+ /* Default to 1 second retries. */
+ if (retry_time_ms == 0)
+ retry_time_ms = 1000;
+
+ /* 9 for the header and 1 for the checksum, plus
+ possibly one for the broadcast. */
+ if ((msg->data_len + 10 + broadcast) > IPMI_MAX_MSG_LENGTH) {
+ spin_lock_irqsave(&intf->counter_lock, flags);
+ intf->sent_invalid_commands++;
+ spin_unlock_irqrestore(&intf->counter_lock, flags);
+ rv = -EMSGSIZE;
+ goto out_err;
+ }
+
+ ipmb_addr = (struct ipmi_ipmb_addr *) addr;
+ if (ipmb_addr->lun > 3) {
+ spin_lock_irqsave(&intf->counter_lock, flags);
+ intf->sent_invalid_commands++;
+ spin_unlock_irqrestore(&intf->counter_lock, flags);
+ rv = -EINVAL;
+ goto out_err;
+ }
+
+ memcpy(&recv_msg->addr, ipmb_addr, sizeof(*ipmb_addr));
+
+ if (recv_msg->msg.netfn & 0x1) {
+ /* It's a response, so use the user's sequence
+ from msgid. */
+ spin_lock_irqsave(&intf->counter_lock, flags);
+ intf->sent_ipmb_responses++;
+ spin_unlock_irqrestore(&intf->counter_lock, flags);
+ format_ipmb_msg(smi_msg, msg, ipmb_addr, msgid,
+ msgid, broadcast,
+ source_address, source_lun);
+
+ /* Save the receive message so we can use it
+ to deliver the response. */
+ smi_msg->user_data = recv_msg;
+ } else {
+ /* It's a command, so get a sequence for it. */
+
+ spin_lock_irqsave(&(intf->seq_lock), flags);
+
+ spin_lock(&intf->counter_lock);
+ intf->sent_ipmb_commands++;
+ spin_unlock(&intf->counter_lock);
+
+ /* Create a sequence number with a 1 second
+ timeout and 4 retries. */
+ rv = intf_next_seq(intf,
+ recv_msg,
+ retry_time_ms,
+ retries,
+ broadcast,
+ &ipmb_seq,
+ &seqid);
+ if (rv) {
+ /* We have used up all the sequence numbers,
+ probably, so abort. */
+ spin_unlock_irqrestore(&(intf->seq_lock),
+ flags);
+ goto out_err;
+ }
+
+ /* Store the sequence number in the message,
+ so that when the send message response
+ comes back we can start the timer. */
+ format_ipmb_msg(smi_msg, msg, ipmb_addr,
+ STORE_SEQ_IN_MSGID(ipmb_seq, seqid),
+ ipmb_seq, broadcast,
+ source_address, source_lun);
+
+ /* Copy the message into the recv message data, so we
+ can retransmit it later if necessary. */
+ memcpy(recv_msg->msg_data, smi_msg->data,
+ smi_msg->data_size);
+ recv_msg->msg.data = recv_msg->msg_data;
+ recv_msg->msg.data_len = smi_msg->data_size;
+
+ /* We don't unlock until here, because we need
+ to copy the completed message into the
+ recv_msg before we release the lock.
+ Otherwise, race conditions may bite us. I
+ know that's pretty paranoid, but I prefer
+ to be correct. */
+ spin_unlock_irqrestore(&(intf->seq_lock), flags);
+ }
+ } else if (addr->addr_type == IPMI_LAN_ADDR_TYPE) {
+ struct ipmi_lan_addr *lan_addr;
+ unsigned char ipmb_seq;
+ long seqid;
+
+ if (addr->channel >= IPMI_MAX_CHANNELS) {
+ spin_lock_irqsave(&intf->counter_lock, flags);
+ intf->sent_invalid_commands++;
+ spin_unlock_irqrestore(&intf->counter_lock, flags);
+ rv = -EINVAL;
+ goto out_err;
+ }
+
+ if ((intf->channels[addr->channel].medium
+ != IPMI_CHANNEL_MEDIUM_8023LAN)
+ && (intf->channels[addr->channel].medium
+ != IPMI_CHANNEL_MEDIUM_ASYNC))
+ {
+ spin_lock_irqsave(&intf->counter_lock, flags);
+ intf->sent_invalid_commands++;
+ spin_unlock_irqrestore(&intf->counter_lock, flags);
+ rv = -EINVAL;
+ goto out_err;
+ }
+
+ retries = 4;
+
+ /* Default to 1 second retries. */
+ if (retry_time_ms == 0)
+ retry_time_ms = 1000;
+
+ /* 11 for the header and 1 for the checksum. */
+ if ((msg->data_len + 12) > IPMI_MAX_MSG_LENGTH) {
+ spin_lock_irqsave(&intf->counter_lock, flags);
+ intf->sent_invalid_commands++;
+ spin_unlock_irqrestore(&intf->counter_lock, flags);
+ rv = -EMSGSIZE;
+ goto out_err;
+ }
+
+ lan_addr = (struct ipmi_lan_addr *) addr;
+ if (lan_addr->lun > 3) {
+ spin_lock_irqsave(&intf->counter_lock, flags);
+ intf->sent_invalid_commands++;
+ spin_unlock_irqrestore(&intf->counter_lock, flags);
+ rv = -EINVAL;
+ goto out_err;
+ }
+
+ memcpy(&recv_msg->addr, lan_addr, sizeof(*lan_addr));
+
+ if (recv_msg->msg.netfn & 0x1) {
+ /* It's a response, so use the user's sequence
+ from msgid. */
+ spin_lock_irqsave(&intf->counter_lock, flags);
+ intf->sent_lan_responses++;
+ spin_unlock_irqrestore(&intf->counter_lock, flags);
+ format_lan_msg(smi_msg, msg, lan_addr, msgid,
+ msgid, source_lun);
+
+ /* Save the receive message so we can use it
+ to deliver the response. */
+ smi_msg->user_data = recv_msg;
+ } else {
+ /* It's a command, so get a sequence for it. */
+
+ spin_lock_irqsave(&(intf->seq_lock), flags);
+
+ spin_lock(&intf->counter_lock);
+ intf->sent_lan_commands++;
+ spin_unlock(&intf->counter_lock);
+
+ /* Create a sequence number with a 1 second
+ timeout and 4 retries. */
+ rv = intf_next_seq(intf,
+ recv_msg,
+ retry_time_ms,
+ retries,
+ 0,
+ &ipmb_seq,
+ &seqid);
+ if (rv) {
+ /* We have used up all the sequence numbers,
+ probably, so abort. */
+ spin_unlock_irqrestore(&(intf->seq_lock),
+ flags);
+ goto out_err;
+ }
+
+ /* Store the sequence number in the message,
+ so that when the send message response
+ comes back we can start the timer. */
+ format_lan_msg(smi_msg, msg, lan_addr,
+ STORE_SEQ_IN_MSGID(ipmb_seq, seqid),
+ ipmb_seq, source_lun);
+
+ /* Copy the message into the recv message data, so we
+ can retransmit it later if necessary. */
+ memcpy(recv_msg->msg_data, smi_msg->data,
+ smi_msg->data_size);
+ recv_msg->msg.data = recv_msg->msg_data;
+ recv_msg->msg.data_len = smi_msg->data_size;
+
+ /* We don't unlock until here, because we need
+ to copy the completed message into the
+ recv_msg before we release the lock.
+ Otherwise, race conditions may bite us. I
+ know that's pretty paranoid, but I prefer
+ to be correct. */
+ spin_unlock_irqrestore(&(intf->seq_lock), flags);
+ }
+ } else {
+ /* Unknown address type. */
+ spin_lock_irqsave(&intf->counter_lock, flags);
+ intf->sent_invalid_commands++;
+ spin_unlock_irqrestore(&intf->counter_lock, flags);
+ rv = -EINVAL;
+ goto out_err;
+ }
+
+#ifdef DEBUG_MSGING
+ {
+ int m;
+ for (m = 0; m < smi_msg->data_size; m++)
+ printk(" %2.2x", smi_msg->data[m]);
+ printk("\n");
+ }
+#endif
+
+ handlers->sender(intf->send_info, smi_msg, priority);
+ rcu_read_unlock();
+
+ return 0;
+
+ out_err:
+ rcu_read_unlock();
+ ipmi_free_smi_msg(smi_msg);
+ ipmi_free_recv_msg(recv_msg);
+ return rv;
+}
+
+static int check_addr(ipmi_smi_t intf,
+ struct ipmi_addr *addr,
+ unsigned char *saddr,
+ unsigned char *lun)
+{
+ if (addr->channel >= IPMI_MAX_CHANNELS)
+ return -EINVAL;
+ *lun = intf->channels[addr->channel].lun;
+ *saddr = intf->channels[addr->channel].address;
+ return 0;
+}
+
+int ipmi_request_settime(ipmi_user_t user,
+ struct ipmi_addr *addr,
+ long msgid,
+ struct kernel_ipmi_msg *msg,
+ void *user_msg_data,
+ int priority,
+ int retries,
+ unsigned int retry_time_ms)
+{
+ unsigned char saddr, lun;
+ int rv;
+
+ if (!user)
+ return -EINVAL;
+ rv = check_addr(user->intf, addr, &saddr, &lun);
+ if (rv)
+ return rv;
+ return i_ipmi_request(user,
+ user->intf,
+ addr,
+ msgid,
+ msg,
+ user_msg_data,
+ NULL, NULL,
+ priority,
+ saddr,
+ lun,
+ retries,
+ retry_time_ms);
+}
+
+int ipmi_request_supply_msgs(ipmi_user_t user,
+ struct ipmi_addr *addr,
+ long msgid,
+ struct kernel_ipmi_msg *msg,
+ void *user_msg_data,
+ void *supplied_smi,
+ struct ipmi_recv_msg *supplied_recv,
+ int priority)
+{
+ unsigned char saddr, lun;
+ int rv;
+
+ if (!user)
+ return -EINVAL;
+ rv = check_addr(user->intf, addr, &saddr, &lun);
+ if (rv)
+ return rv;
+ return i_ipmi_request(user,
+ user->intf,
+ addr,
+ msgid,
+ msg,
+ user_msg_data,
+ supplied_smi,
+ supplied_recv,
+ priority,
+ saddr,
+ lun,
+ -1, 0);
+}
+
+#ifdef CONFIG_PROC_FS
+static int ipmb_file_read_proc(char *page, char **start, off_t off,
+ int count, int *eof, void *data)
+{
+ char *out = (char *) page;
+ ipmi_smi_t intf = data;
+ int i;
+ int rv = 0;
+
+ for (i = 0; i < IPMI_MAX_CHANNELS; i++)
+ rv += sprintf(out+rv, "%x ", intf->channels[i].address);
+ out[rv-1] = '\n'; /* Replace the final space with a newline */
+ out[rv] = '\0';
+ rv++;
+ return rv;
+}
+
+static int version_file_read_proc(char *page, char **start, off_t off,
+ int count, int *eof, void *data)
+{
+ char *out = (char *) page;
+ ipmi_smi_t intf = data;
+
+ return sprintf(out, "%d.%d\n",
+ ipmi_version_major(&intf->bmc->id),
+ ipmi_version_minor(&intf->bmc->id));
+}
+
+static int stat_file_read_proc(char *page, char **start, off_t off,
+ int count, int *eof, void *data)
+{
+ char *out = (char *) page;
+ ipmi_smi_t intf = data;
+
+ out += sprintf(out, "sent_invalid_commands: %d\n",
+ intf->sent_invalid_commands);
+ out += sprintf(out, "sent_local_commands: %d\n",
+ intf->sent_local_commands);
+ out += sprintf(out, "handled_local_responses: %d\n",
+ intf->handled_local_responses);
+ out += sprintf(out, "unhandled_local_responses: %d\n",
+ intf->unhandled_local_responses);
+ out += sprintf(out, "sent_ipmb_commands: %d\n",
+ intf->sent_ipmb_commands);
+ out += sprintf(out, "sent_ipmb_command_errs: %d\n",
+ intf->sent_ipmb_command_errs);
+ out += sprintf(out, "retransmitted_ipmb_commands: %d\n",
+ intf->retransmitted_ipmb_commands);
+ out += sprintf(out, "timed_out_ipmb_commands: %d\n",
+ intf->timed_out_ipmb_commands);
+ out += sprintf(out, "timed_out_ipmb_broadcasts: %d\n",
+ intf->timed_out_ipmb_broadcasts);
+ out += sprintf(out, "sent_ipmb_responses: %d\n",
+ intf->sent_ipmb_responses);
+ out += sprintf(out, "handled_ipmb_responses: %d\n",
+ intf->handled_ipmb_responses);
+ out += sprintf(out, "invalid_ipmb_responses: %d\n",
+ intf->invalid_ipmb_responses);
+ out += sprintf(out, "unhandled_ipmb_responses: %d\n",
+ intf->unhandled_ipmb_responses);
+ out += sprintf(out, "sent_lan_commands: %d\n",
+ intf->sent_lan_commands);
+ out += sprintf(out, "sent_lan_command_errs: %d\n",
+ intf->sent_lan_command_errs);
+ out += sprintf(out, "retransmitted_lan_commands: %d\n",
+ intf->retransmitted_lan_commands);
+ out += sprintf(out, "timed_out_lan_commands: %d\n",
+ intf->timed_out_lan_commands);
+ out += sprintf(out, "sent_lan_responses: %d\n",
+ intf->sent_lan_responses);
+ out += sprintf(out, "handled_lan_responses: %d\n",
+ intf->handled_lan_responses);
+ out += sprintf(out, "invalid_lan_responses: %d\n",
+ intf->invalid_lan_responses);
+ out += sprintf(out, "unhandled_lan_responses: %d\n",
+ intf->unhandled_lan_responses);
+ out += sprintf(out, "handled_commands: %d\n",
+ intf->handled_commands);
+ out += sprintf(out, "invalid_commands: %d\n",
+ intf->invalid_commands);
+ out += sprintf(out, "unhandled_commands: %d\n",
+ intf->unhandled_commands);
+ out += sprintf(out, "invalid_events: %d\n",
+ intf->invalid_events);
+ out += sprintf(out, "events: %d\n",
+ intf->events);
+
+ return (out - ((char *) page));
+}
+#endif /* CONFIG_PROC_FS */
+
+int ipmi_smi_add_proc_entry(ipmi_smi_t smi, char *name,
+ read_proc_t *read_proc, write_proc_t *write_proc,
+ void *data, struct module *owner)
+{
+ int rv = 0;
+#ifdef CONFIG_PROC_FS
+ struct proc_dir_entry *file;
+ struct ipmi_proc_entry *entry;
+
+ /* Create a list element. */
+ entry = kmalloc(sizeof(*entry), GFP_KERNEL);
+ if (!entry)
+ return -ENOMEM;
+ entry->name = kmalloc(strlen(name)+1, GFP_KERNEL);
+ if (!entry->name) {
+ kfree(entry);
+ return -ENOMEM;
+ }
+ strcpy(entry->name, name);
+
+ file = create_proc_entry(name, 0, smi->proc_dir);
+ if (!file) {
+ kfree(entry->name);
+ kfree(entry);
+ rv = -ENOMEM;
+ } else {
+ file->nlink = 1;
+ file->data = data;
+ file->read_proc = read_proc;
+ file->write_proc = write_proc;
+ file->owner = owner;
+
+ spin_lock(&smi->proc_entry_lock);
+ /* Stick it on the list. */
+ entry->next = smi->proc_entries;
+ smi->proc_entries = entry;
+ spin_unlock(&smi->proc_entry_lock);
+ }
+#endif /* CONFIG_PROC_FS */
+
+ return rv;
+}
+
+static int add_proc_entries(ipmi_smi_t smi, int num)
+{
+ int rv = 0;
+
+#ifdef CONFIG_PROC_FS
+ sprintf(smi->proc_dir_name, "%d", num);
+ smi->proc_dir = proc_mkdir(smi->proc_dir_name, proc_ipmi_root);
+ if (!smi->proc_dir)
+ rv = -ENOMEM;
+ else {
+ smi->proc_dir->owner = THIS_MODULE;
+ }
+
+ if (rv == 0)
+ rv = ipmi_smi_add_proc_entry(smi, "stats",
+ stat_file_read_proc, NULL,
+ smi, THIS_MODULE);
+
+ if (rv == 0)
+ rv = ipmi_smi_add_proc_entry(smi, "ipmb",
+ ipmb_file_read_proc, NULL,
+ smi, THIS_MODULE);
+
+ if (rv == 0)
+ rv = ipmi_smi_add_proc_entry(smi, "version",
+ version_file_read_proc, NULL,
+ smi, THIS_MODULE);
+#endif /* CONFIG_PROC_FS */
+
+ return rv;
+}
+
+static void remove_proc_entries(ipmi_smi_t smi)
+{
+#ifdef CONFIG_PROC_FS
+ struct ipmi_proc_entry *entry;
+
+ spin_lock(&smi->proc_entry_lock);
+ while (smi->proc_entries) {
+ entry = smi->proc_entries;
+ smi->proc_entries = entry->next;
+
+ remove_proc_entry(entry->name, smi->proc_dir);
+ kfree(entry->name);
+ kfree(entry);
+ }
+ spin_unlock(&smi->proc_entry_lock);
+ remove_proc_entry(smi->proc_dir_name, proc_ipmi_root);
+#endif /* CONFIG_PROC_FS */
+}
+
+static int __find_bmc_guid(struct device *dev, void *data)
+{
+ unsigned char *id = data;
+ struct bmc_device *bmc = dev_get_drvdata(dev);
+ return memcmp(bmc->guid, id, 16) == 0;
+}
+
+static struct bmc_device *ipmi_find_bmc_guid(struct device_driver *drv,
+ unsigned char *guid)
+{
+ struct device *dev;
+
+ dev = driver_find_device(drv, NULL, guid, __find_bmc_guid);
+ if (dev)
+ return dev_get_drvdata(dev);
+ else
+ return NULL;
+}
+
+struct prod_dev_id {
+ unsigned int product_id;
+ unsigned char device_id;
+};
+
+static int __find_bmc_prod_dev_id(struct device *dev, void *data)
+{
+ struct prod_dev_id *id = data;
+ struct bmc_device *bmc = dev_get_drvdata(dev);
+
+ return (bmc->id.product_id == id->product_id
+ && bmc->id.device_id == id->device_id);
+}
+
+static struct bmc_device *ipmi_find_bmc_prod_dev_id(
+ struct device_driver *drv,
+ unsigned int product_id, unsigned char device_id)
+{
+ struct prod_dev_id id = {
+ .product_id = product_id,
+ .device_id = device_id,
+ };
+ struct device *dev;
+
+ dev = driver_find_device(drv, NULL, &id, __find_bmc_prod_dev_id);
+ if (dev)
+ return dev_get_drvdata(dev);
+ else
+ return NULL;
+}
+
+static ssize_t device_id_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct bmc_device *bmc = dev_get_drvdata(dev);
+
+ return snprintf(buf, 10, "%u\n", bmc->id.device_id);
+}
+
+static ssize_t provides_dev_sdrs_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct bmc_device *bmc = dev_get_drvdata(dev);
+
+ return snprintf(buf, 10, "%u\n",
+ (bmc->id.device_revision & 0x80) >> 7);
+}
+
+static ssize_t revision_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct bmc_device *bmc = dev_get_drvdata(dev);
+
+ return snprintf(buf, 20, "%u\n",
+ bmc->id.device_revision & 0x0F);
+}
+
+static ssize_t firmware_rev_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct bmc_device *bmc = dev_get_drvdata(dev);
+
+ return snprintf(buf, 20, "%u.%x\n", bmc->id.firmware_revision_1,
+ bmc->id.firmware_revision_2);
+}
+
+static ssize_t ipmi_version_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct bmc_device *bmc = dev_get_drvdata(dev);
+
+ return snprintf(buf, 20, "%u.%u\n",
+ ipmi_version_major(&bmc->id),
+ ipmi_version_minor(&bmc->id));
+}
+
+static ssize_t add_dev_support_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct bmc_device *bmc = dev_get_drvdata(dev);
+
+ return snprintf(buf, 10, "0x%02x\n",
+ bmc->id.additional_device_support);
+}
+
+static ssize_t manufacturer_id_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct bmc_device *bmc = dev_get_drvdata(dev);
+
+ return snprintf(buf, 20, "0x%6.6x\n", bmc->id.manufacturer_id);
+}
+
+static ssize_t product_id_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct bmc_device *bmc = dev_get_drvdata(dev);
+
+ return snprintf(buf, 10, "0x%4.4x\n", bmc->id.product_id);
+}
+
+static ssize_t aux_firmware_rev_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct bmc_device *bmc = dev_get_drvdata(dev);
+
+ return snprintf(buf, 21, "0x%02x 0x%02x 0x%02x 0x%02x\n",
+ bmc->id.aux_firmware_revision[3],
+ bmc->id.aux_firmware_revision[2],
+ bmc->id.aux_firmware_revision[1],
+ bmc->id.aux_firmware_revision[0]);
+}
+
+static ssize_t guid_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct bmc_device *bmc = dev_get_drvdata(dev);
+
+ return snprintf(buf, 100, "%Lx%Lx\n",
+ (long long) bmc->guid[0],
+ (long long) bmc->guid[8]);
+}
+
+static void remove_files(struct bmc_device *bmc)
+{
+ if (!bmc->dev)
+ return;
+
+ device_remove_file(&bmc->dev->dev,
+ &bmc->device_id_attr);
+ device_remove_file(&bmc->dev->dev,
+ &bmc->provides_dev_sdrs_attr);
+ device_remove_file(&bmc->dev->dev,
+ &bmc->revision_attr);
+ device_remove_file(&bmc->dev->dev,
+ &bmc->firmware_rev_attr);
+ device_remove_file(&bmc->dev->dev,
+ &bmc->version_attr);
+ device_remove_file(&bmc->dev->dev,
+ &bmc->add_dev_support_attr);
+ device_remove_file(&bmc->dev->dev,
+ &bmc->manufacturer_id_attr);
+ device_remove_file(&bmc->dev->dev,
+ &bmc->product_id_attr);
+
+ if (bmc->id.aux_firmware_revision_set)
+ device_remove_file(&bmc->dev->dev,
+ &bmc->aux_firmware_rev_attr);
+ if (bmc->guid_set)
+ device_remove_file(&bmc->dev->dev,
+ &bmc->guid_attr);
+}
+
+static void
+cleanup_bmc_device(struct kref *ref)
+{
+ struct bmc_device *bmc;
+
+ bmc = container_of(ref, struct bmc_device, refcount);
+
+ remove_files(bmc);
+ platform_device_unregister(bmc->dev);
+ kfree(bmc);
+}
+
+static void ipmi_bmc_unregister(ipmi_smi_t intf)
+{
+ struct bmc_device *bmc = intf->bmc;
+
+ if (intf->sysfs_name) {
+ sysfs_remove_link(&intf->si_dev->kobj, intf->sysfs_name);
+ kfree(intf->sysfs_name);
+ intf->sysfs_name = NULL;
+ }
+ if (intf->my_dev_name) {
+ sysfs_remove_link(&bmc->dev->dev.kobj, intf->my_dev_name);
+ kfree(intf->my_dev_name);
+ intf->my_dev_name = NULL;
+ }
+
+ mutex_lock(&ipmidriver_mutex);
+ kref_put(&bmc->refcount, cleanup_bmc_device);
+ intf->bmc = NULL;
+ mutex_unlock(&ipmidriver_mutex);
+}
+
+static int create_files(struct bmc_device *bmc)
+{
+ int err;
+
+ bmc->device_id_attr.attr.name = "device_id";
+ bmc->device_id_attr.attr.owner = THIS_MODULE;
+ bmc->device_id_attr.attr.mode = S_IRUGO;
+ bmc->device_id_attr.show = device_id_show;
+
+ bmc->provides_dev_sdrs_attr.attr.name = "provides_device_sdrs";
+ bmc->provides_dev_sdrs_attr.attr.owner = THIS_MODULE;
+ bmc->provides_dev_sdrs_attr.attr.mode = S_IRUGO;
+ bmc->provides_dev_sdrs_attr.show = provides_dev_sdrs_show;
+
+ bmc->revision_attr.attr.name = "revision";
+ bmc->revision_attr.attr.owner = THIS_MODULE;
+ bmc->revision_attr.attr.mode = S_IRUGO;
+ bmc->revision_attr.show = revision_show;
+
+ bmc->firmware_rev_attr.attr.name = "firmware_revision";
+ bmc->firmware_rev_attr.attr.owner = THIS_MODULE;
+ bmc->firmware_rev_attr.attr.mode = S_IRUGO;
+ bmc->firmware_rev_attr.show = firmware_rev_show;
+
+ bmc->version_attr.attr.name = "ipmi_version";
+ bmc->version_attr.attr.owner = THIS_MODULE;
+ bmc->version_attr.attr.mode = S_IRUGO;
+ bmc->version_attr.show = ipmi_version_show;
+
+ bmc->add_dev_support_attr.attr.name = "additional_device_support";
+ bmc->add_dev_support_attr.attr.owner = THIS_MODULE;
+ bmc->add_dev_support_attr.attr.mode = S_IRUGO;
+ bmc->add_dev_support_attr.show = add_dev_support_show;
+
+ bmc->manufacturer_id_attr.attr.name = "manufacturer_id";
+ bmc->manufacturer_id_attr.attr.owner = THIS_MODULE;
+ bmc->manufacturer_id_attr.attr.mode = S_IRUGO;
+ bmc->manufacturer_id_attr.show = manufacturer_id_show;
+
+ bmc->product_id_attr.attr.name = "product_id";
+ bmc->product_id_attr.attr.owner = THIS_MODULE;
+ bmc->product_id_attr.attr.mode = S_IRUGO;
+ bmc->product_id_attr.show = product_id_show;
+
+ bmc->guid_attr.attr.name = "guid";
+ bmc->guid_attr.attr.owner = THIS_MODULE;
+ bmc->guid_attr.attr.mode = S_IRUGO;
+ bmc->guid_attr.show = guid_show;
+
+ bmc->aux_firmware_rev_attr.attr.name = "aux_firmware_revision";
+ bmc->aux_firmware_rev_attr.attr.owner = THIS_MODULE;
+ bmc->aux_firmware_rev_attr.attr.mode = S_IRUGO;
+ bmc->aux_firmware_rev_attr.show = aux_firmware_rev_show;
+
+ err = device_create_file(&bmc->dev->dev,
+ &bmc->device_id_attr);
+ if (err) goto out;
+ err = device_create_file(&bmc->dev->dev,
+ &bmc->provides_dev_sdrs_attr);
+ if (err) goto out_devid;
+ err = device_create_file(&bmc->dev->dev,
+ &bmc->revision_attr);
+ if (err) goto out_sdrs;
+ err = device_create_file(&bmc->dev->dev,
+ &bmc->firmware_rev_attr);
+ if (err) goto out_rev;
+ err = device_create_file(&bmc->dev->dev,
+ &bmc->version_attr);
+ if (err) goto out_firm;
+ err = device_create_file(&bmc->dev->dev,
+ &bmc->add_dev_support_attr);
+ if (err) goto out_version;
+ err = device_create_file(&bmc->dev->dev,
+ &bmc->manufacturer_id_attr);
+ if (err) goto out_add_dev;
+ err = device_create_file(&bmc->dev->dev,
+ &bmc->product_id_attr);
+ if (err) goto out_manu;
+ if (bmc->id.aux_firmware_revision_set) {
+ err = device_create_file(&bmc->dev->dev,
+ &bmc->aux_firmware_rev_attr);
+ if (err) goto out_prod_id;
+ }
+ if (bmc->guid_set) {
+ err = device_create_file(&bmc->dev->dev,
+ &bmc->guid_attr);
+ if (err) goto out_aux_firm;
+ }
+
+ return 0;
+
+out_aux_firm:
+ if (bmc->id.aux_firmware_revision_set)
+ device_remove_file(&bmc->dev->dev,
+ &bmc->aux_firmware_rev_attr);
+out_prod_id:
+ device_remove_file(&bmc->dev->dev,
+ &bmc->product_id_attr);
+out_manu:
+ device_remove_file(&bmc->dev->dev,
+ &bmc->manufacturer_id_attr);
+out_add_dev:
+ device_remove_file(&bmc->dev->dev,
+ &bmc->add_dev_support_attr);
+out_version:
+ device_remove_file(&bmc->dev->dev,
+ &bmc->version_attr);
+out_firm:
+ device_remove_file(&bmc->dev->dev,
+ &bmc->firmware_rev_attr);
+out_rev:
+ device_remove_file(&bmc->dev->dev,
+ &bmc->revision_attr);
+out_sdrs:
+ device_remove_file(&bmc->dev->dev,
+ &bmc->provides_dev_sdrs_attr);
+out_devid:
+ device_remove_file(&bmc->dev->dev,
+ &bmc->device_id_attr);
+out:
+ return err;
+}
+
+static int ipmi_bmc_register(ipmi_smi_t intf, int ifnum,
+ const char *sysfs_name)
+{
+ int rv;
+ struct bmc_device *bmc = intf->bmc;
+ struct bmc_device *old_bmc;
+ int size;
+ char dummy[1];
+
+ mutex_lock(&ipmidriver_mutex);
+
+ /*
+ * Try to find if there is an bmc_device struct
+ * representing the interfaced BMC already
+ */
+ if (bmc->guid_set)
+ old_bmc = ipmi_find_bmc_guid(&ipmidriver, bmc->guid);
+ else
+ old_bmc = ipmi_find_bmc_prod_dev_id(&ipmidriver,
+ bmc->id.product_id,
+ bmc->id.device_id);
+
+ /*
+ * If there is already an bmc_device, free the new one,
+ * otherwise register the new BMC device
+ */
+ if (old_bmc) {
+ kfree(bmc);
+ intf->bmc = old_bmc;
+ bmc = old_bmc;
+
+ kref_get(&bmc->refcount);
+ mutex_unlock(&ipmidriver_mutex);
+
+ printk(KERN_INFO
+ "ipmi: interfacing existing BMC (man_id: 0x%6.6x,"
+ " prod_id: 0x%4.4x, dev_id: 0x%2.2x)\n",
+ bmc->id.manufacturer_id,
+ bmc->id.product_id,
+ bmc->id.device_id);
+ } else {
+ char name[14];
+ unsigned char orig_dev_id = bmc->id.device_id;
+ int warn_printed = 0;
+
+ snprintf(name, sizeof(name),
+ "ipmi_bmc.%4.4x", bmc->id.product_id);
+
+ while (ipmi_find_bmc_prod_dev_id(&ipmidriver,
+ bmc->id.product_id,
+ bmc->id.device_id)) {
+ if (!warn_printed) {
+ printk(KERN_WARNING PFX
+ "This machine has two different BMCs"
+ " with the same product id and device"
+ " id. This is an error in the"
+ " firmware, but incrementing the"
+ " device id to work around the problem."
+ " Prod ID = 0x%x, Dev ID = 0x%x\n",
+ bmc->id.product_id, bmc->id.device_id);
+ warn_printed = 1;
+ }
+ bmc->id.device_id++; /* Wraps at 255 */
+ if (bmc->id.device_id == orig_dev_id) {
+ printk(KERN_ERR PFX
+ "Out of device ids!\n");
+ break;
+ }
+ }
+
+ bmc->dev = platform_device_alloc(name, bmc->id.device_id);
+ if (!bmc->dev) {
+ mutex_unlock(&ipmidriver_mutex);
+ printk(KERN_ERR
+ "ipmi_msghandler:"
+ " Unable to allocate platform device\n");
+ return -ENOMEM;
+ }
+ bmc->dev->dev.driver = &ipmidriver;
+ dev_set_drvdata(&bmc->dev->dev, bmc);
+ kref_init(&bmc->refcount);
+
+ rv = platform_device_add(bmc->dev);
+ mutex_unlock(&ipmidriver_mutex);
+ if (rv) {
+ platform_device_put(bmc->dev);
+ bmc->dev = NULL;
+ printk(KERN_ERR
+ "ipmi_msghandler:"
+ " Unable to register bmc device: %d\n",
+ rv);
+ /* Don't go to out_err, you can only do that if
+ the device is registered already. */
+ return rv;
+ }
+
+ rv = create_files(bmc);
+ if (rv) {
+ mutex_lock(&ipmidriver_mutex);
+ platform_device_unregister(bmc->dev);
+ mutex_unlock(&ipmidriver_mutex);
+
+ return rv;
+ }
+
+ printk(KERN_INFO
+ "ipmi: Found new BMC (man_id: 0x%6.6x, "
+ " prod_id: 0x%4.4x, dev_id: 0x%2.2x)\n",
+ bmc->id.manufacturer_id,
+ bmc->id.product_id,
+ bmc->id.device_id);
+ }
+
+ /*
+ * create symlink from system interface device to bmc device
+ * and back.
+ */
+ intf->sysfs_name = kstrdup(sysfs_name, GFP_KERNEL);
+ if (!intf->sysfs_name) {
+ rv = -ENOMEM;
+ printk(KERN_ERR
+ "ipmi_msghandler: allocate link to BMC: %d\n",
+ rv);
+ goto out_err;
+ }
+
+ rv = sysfs_create_link(&intf->si_dev->kobj,
+ &bmc->dev->dev.kobj, intf->sysfs_name);
+ if (rv) {
+ kfree(intf->sysfs_name);
+ intf->sysfs_name = NULL;
+ printk(KERN_ERR
+ "ipmi_msghandler: Unable to create bmc symlink: %d\n",
+ rv);
+ goto out_err;
+ }
+
+ size = snprintf(dummy, 0, "ipmi%d", ifnum);
+ intf->my_dev_name = kmalloc(size+1, GFP_KERNEL);
+ if (!intf->my_dev_name) {
+ kfree(intf->sysfs_name);
+ intf->sysfs_name = NULL;
+ rv = -ENOMEM;
+ printk(KERN_ERR
+ "ipmi_msghandler: allocate link from BMC: %d\n",
+ rv);
+ goto out_err;
+ }
+ snprintf(intf->my_dev_name, size+1, "ipmi%d", ifnum);
+
+ rv = sysfs_create_link(&bmc->dev->dev.kobj, &intf->si_dev->kobj,
+ intf->my_dev_name);
+ if (rv) {
+ kfree(intf->sysfs_name);
+ intf->sysfs_name = NULL;
+ kfree(intf->my_dev_name);
+ intf->my_dev_name = NULL;
+ printk(KERN_ERR
+ "ipmi_msghandler:"
+ " Unable to create symlink to bmc: %d\n",
+ rv);
+ goto out_err;
+ }
+
+ return 0;
+
+out_err:
+ ipmi_bmc_unregister(intf);
+ return rv;
+}
+
+static int
+send_guid_cmd(ipmi_smi_t intf, int chan)
+{
+ struct kernel_ipmi_msg msg;
+ struct ipmi_system_interface_addr si;
+
+ si.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE;
+ si.channel = IPMI_BMC_CHANNEL;
+ si.lun = 0;
+
+ msg.netfn = IPMI_NETFN_APP_REQUEST;
+ msg.cmd = IPMI_GET_DEVICE_GUID_CMD;
+ msg.data = NULL;
+ msg.data_len = 0;
+ return i_ipmi_request(NULL,
+ intf,
+ (struct ipmi_addr *) &si,
+ 0,
+ &msg,
+ intf,
+ NULL,
+ NULL,
+ 0,
+ intf->channels[0].address,
+ intf->channels[0].lun,
+ -1, 0);
+}
+
+static void
+guid_handler(ipmi_smi_t intf, struct ipmi_recv_msg *msg)
+{
+ if ((msg->addr.addr_type != IPMI_SYSTEM_INTERFACE_ADDR_TYPE)
+ || (msg->msg.netfn != IPMI_NETFN_APP_RESPONSE)
+ || (msg->msg.cmd != IPMI_GET_DEVICE_GUID_CMD))
+ /* Not for me */
+ return;
+
+ if (msg->msg.data[0] != 0) {
+ /* Error from getting the GUID, the BMC doesn't have one. */
+ intf->bmc->guid_set = 0;
+ goto out;
+ }
+
+ if (msg->msg.data_len < 17) {
+ intf->bmc->guid_set = 0;
+ printk(KERN_WARNING PFX
+ "guid_handler: The GUID response from the BMC was too"
+ " short, it was %d but should have been 17. Assuming"
+ " GUID is not available.\n",
+ msg->msg.data_len);
+ goto out;
+ }
+
+ memcpy(intf->bmc->guid, msg->msg.data, 16);
+ intf->bmc->guid_set = 1;
+ out:
+ wake_up(&intf->waitq);
+}
+
+static void
+get_guid(ipmi_smi_t intf)
+{
+ int rv;
+
+ intf->bmc->guid_set = 0x2;
+ intf->null_user_handler = guid_handler;
+ rv = send_guid_cmd(intf, 0);
+ if (rv)
+ /* Send failed, no GUID available. */
+ intf->bmc->guid_set = 0;
+ wait_event(intf->waitq, intf->bmc->guid_set != 2);
+ intf->null_user_handler = NULL;
+}
+
+static int
+send_channel_info_cmd(ipmi_smi_t intf, int chan)
+{
+ struct kernel_ipmi_msg msg;
+ unsigned char data[1];
+ struct ipmi_system_interface_addr si;
+
+ si.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE;
+ si.channel = IPMI_BMC_CHANNEL;
+ si.lun = 0;
+
+ msg.netfn = IPMI_NETFN_APP_REQUEST;
+ msg.cmd = IPMI_GET_CHANNEL_INFO_CMD;
+ msg.data = data;
+ msg.data_len = 1;
+ data[0] = chan;
+ return i_ipmi_request(NULL,
+ intf,
+ (struct ipmi_addr *) &si,
+ 0,
+ &msg,
+ intf,
+ NULL,
+ NULL,
+ 0,
+ intf->channels[0].address,
+ intf->channels[0].lun,
+ -1, 0);
+}
+
+static void
+channel_handler(ipmi_smi_t intf, struct ipmi_recv_msg *msg)
+{
+ int rv = 0;
+ int chan;
+
+ if ((msg->addr.addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE)
+ && (msg->msg.netfn == IPMI_NETFN_APP_RESPONSE)
+ && (msg->msg.cmd == IPMI_GET_CHANNEL_INFO_CMD))
+ {
+ /* It's the one we want */
+ if (msg->msg.data[0] != 0) {
+ /* Got an error from the channel, just go on. */
+
+ if (msg->msg.data[0] == IPMI_INVALID_COMMAND_ERR) {
+ /* If the MC does not support this
+ command, that is legal. We just
+ assume it has one IPMB at channel
+ zero. */
+ intf->channels[0].medium
+ = IPMI_CHANNEL_MEDIUM_IPMB;
+ intf->channels[0].protocol
+ = IPMI_CHANNEL_PROTOCOL_IPMB;
+ rv = -ENOSYS;
+
+ intf->curr_channel = IPMI_MAX_CHANNELS;
+ wake_up(&intf->waitq);
+ goto out;
+ }
+ goto next_channel;
+ }
+ if (msg->msg.data_len < 4) {
+ /* Message not big enough, just go on. */
+ goto next_channel;
+ }
+ chan = intf->curr_channel;
+ intf->channels[chan].medium = msg->msg.data[2] & 0x7f;
+ intf->channels[chan].protocol = msg->msg.data[3] & 0x1f;
+
+ next_channel:
+ intf->curr_channel++;
+ if (intf->curr_channel >= IPMI_MAX_CHANNELS)
+ wake_up(&intf->waitq);
+ else
+ rv = send_channel_info_cmd(intf, intf->curr_channel);
+
+ if (rv) {
+ /* Got an error somehow, just give up. */
+ intf->curr_channel = IPMI_MAX_CHANNELS;
+ wake_up(&intf->waitq);
+
+ printk(KERN_WARNING PFX
+ "Error sending channel information: %d\n",
+ rv);
+ }
+ }
+ out:
+ return;
+}
+
+int ipmi_register_smi(struct ipmi_smi_handlers *handlers,
+ void *send_info,
+ struct ipmi_device_id *device_id,
+ struct device *si_dev,
+ const char *sysfs_name,
+ unsigned char slave_addr)
+{
+ int i, j;
+ int rv;
+ ipmi_smi_t intf;
+ ipmi_smi_t tintf;
+ struct list_head *link;
+
+ /* Make sure the driver is actually initialized, this handles
+ problems with initialization order. */
+ if (!initialized) {
+ rv = ipmi_init_msghandler();
+ if (rv)
+ return rv;
+ /* The init code doesn't return an error if it was turned
+ off, but it won't initialize. Check that. */
+ if (!initialized)
+ return -ENODEV;
+ }
+
+ intf = kmalloc(sizeof(*intf), GFP_KERNEL);
+ if (!intf)
+ return -ENOMEM;
+ memset(intf, 0, sizeof(*intf));
+
+ intf->ipmi_version_major = ipmi_version_major(device_id);
+ intf->ipmi_version_minor = ipmi_version_minor(device_id);
+
+ intf->bmc = kzalloc(sizeof(*intf->bmc), GFP_KERNEL);
+ if (!intf->bmc) {
+ kfree(intf);
+ return -ENOMEM;
+ }
+ intf->intf_num = -1; /* Mark it invalid for now. */
+ kref_init(&intf->refcount);
+ intf->bmc->id = *device_id;
+ intf->si_dev = si_dev;
+ for (j = 0; j < IPMI_MAX_CHANNELS; j++) {
+ intf->channels[j].address = IPMI_BMC_SLAVE_ADDR;
+ intf->channels[j].lun = 2;
+ }
+ if (slave_addr != 0)
+ intf->channels[0].address = slave_addr;
+ INIT_LIST_HEAD(&intf->users);
+ intf->handlers = handlers;
+ intf->send_info = send_info;
+ spin_lock_init(&intf->seq_lock);
+ for (j = 0; j < IPMI_IPMB_NUM_SEQ; j++) {
+ intf->seq_table[j].inuse = 0;
+ intf->seq_table[j].seqid = 0;
+ }
+ intf->curr_seq = 0;
+#ifdef CONFIG_PROC_FS
+ spin_lock_init(&intf->proc_entry_lock);
+#endif
+ spin_lock_init(&intf->waiting_msgs_lock);
+ INIT_LIST_HEAD(&intf->waiting_msgs);
+ spin_lock_init(&intf->events_lock);
+ INIT_LIST_HEAD(&intf->waiting_events);
+ intf->waiting_events_count = 0;
+ mutex_init(&intf->cmd_rcvrs_mutex);
+ spin_lock_init(&intf->maintenance_mode_lock);
+ INIT_LIST_HEAD(&intf->cmd_rcvrs);
+ init_waitqueue_head(&intf->waitq);
+
+ spin_lock_init(&intf->counter_lock);
+ intf->proc_dir = NULL;
+
+ mutex_lock(&smi_watchers_mutex);
+ mutex_lock(&ipmi_interfaces_mutex);
+ /* Look for a hole in the numbers. */
+ i = 0;
+ link = &ipmi_interfaces;
+ list_for_each_entry_rcu(tintf, &ipmi_interfaces, link) {
+ if (tintf->intf_num != i) {
+ link = &tintf->link;
+ break;
+ }
+ i++;
+ }
+ /* Add the new interface in numeric order. */
+ if (i == 0)
+ list_add_rcu(&intf->link, &ipmi_interfaces);
+ else
+ list_add_tail_rcu(&intf->link, link);
+
+ rv = handlers->start_processing(send_info, intf);
+ if (rv)
+ goto out;
+
+ get_guid(intf);
+
+ if ((intf->ipmi_version_major > 1)
+ || ((intf->ipmi_version_major == 1)
+ && (intf->ipmi_version_minor >= 5)))
+ {
+ /* Start scanning the channels to see what is
+ available. */
+ intf->null_user_handler = channel_handler;
+ intf->curr_channel = 0;
+ rv = send_channel_info_cmd(intf, 0);
+ if (rv)
+ goto out;
+
+ /* Wait for the channel info to be read. */
+ wait_event(intf->waitq,
+ intf->curr_channel >= IPMI_MAX_CHANNELS);
+ intf->null_user_handler = NULL;
+ } else {
+ /* Assume a single IPMB channel at zero. */
+ intf->channels[0].medium = IPMI_CHANNEL_MEDIUM_IPMB;
+ intf->channels[0].protocol = IPMI_CHANNEL_PROTOCOL_IPMB;
+ }
+
+ if (rv == 0)
+ rv = add_proc_entries(intf, i);
+
+ rv = ipmi_bmc_register(intf, i, sysfs_name);
+
+ out:
+ if (rv) {
+ if (intf->proc_dir)
+ remove_proc_entries(intf);
+ intf->handlers = NULL;
+ list_del_rcu(&intf->link);
+ mutex_unlock(&ipmi_interfaces_mutex);
+ mutex_unlock(&smi_watchers_mutex);
+ synchronize_rcu();
+ kref_put(&intf->refcount, intf_free);
+ } else {
+ /* After this point the interface is legal to use. */
+ intf->intf_num = i;
+ mutex_unlock(&ipmi_interfaces_mutex);
+ call_smi_watchers(i, intf->si_dev);
+ mutex_unlock(&smi_watchers_mutex);
+ }
+
+ return rv;
+}
+
+static void cleanup_smi_msgs(ipmi_smi_t intf)
+{
+ int i;
+ struct seq_table *ent;
+
+ /* No need for locks, the interface is down. */
+ for (i = 0; i < IPMI_IPMB_NUM_SEQ; i++) {
+ ent = &(intf->seq_table[i]);
+ if (!ent->inuse)
+ continue;
+ deliver_err_response(ent->recv_msg, IPMI_ERR_UNSPECIFIED);
+ }
+}
+
+int ipmi_unregister_smi(ipmi_smi_t intf)
+{
+ struct ipmi_smi_watcher *w;
+ int intf_num = intf->intf_num;
+
+ ipmi_bmc_unregister(intf);
+
+ mutex_lock(&smi_watchers_mutex);
+ mutex_lock(&ipmi_interfaces_mutex);
+ intf->intf_num = -1;
+ intf->handlers = NULL;
+ list_del_rcu(&intf->link);
+ mutex_unlock(&ipmi_interfaces_mutex);
+ synchronize_rcu();
+
+ cleanup_smi_msgs(intf);
+
+ remove_proc_entries(intf);
+
+ /* Call all the watcher interfaces to tell them that
+ an interface is gone. */
+ list_for_each_entry(w, &smi_watchers, link)
+ w->smi_gone(intf_num);
+ mutex_unlock(&smi_watchers_mutex);
+
+ kref_put(&intf->refcount, intf_free);
+ return 0;
+}
+
+static int handle_ipmb_get_msg_rsp(ipmi_smi_t intf,
+ struct ipmi_smi_msg *msg)
+{
+ struct ipmi_ipmb_addr ipmb_addr;
+ struct ipmi_recv_msg *recv_msg;
+ unsigned long flags;
+
+
+ /* This is 11, not 10, because the response must contain a
+ * completion code. */
+ if (msg->rsp_size < 11) {
+ /* Message not big enough, just ignore it. */
+ spin_lock_irqsave(&intf->counter_lock, flags);
+ intf->invalid_ipmb_responses++;
+ spin_unlock_irqrestore(&intf->counter_lock, flags);
+ return 0;
+ }
+
+ if (msg->rsp[2] != 0) {
+ /* An error getting the response, just ignore it. */
+ return 0;
+ }
+
+ ipmb_addr.addr_type = IPMI_IPMB_ADDR_TYPE;
+ ipmb_addr.slave_addr = msg->rsp[6];
+ ipmb_addr.channel = msg->rsp[3] & 0x0f;
+ ipmb_addr.lun = msg->rsp[7] & 3;
+
+ /* It's a response from a remote entity. Look up the sequence
+ number and handle the response. */
+ if (intf_find_seq(intf,
+ msg->rsp[7] >> 2,
+ msg->rsp[3] & 0x0f,
+ msg->rsp[8],
+ (msg->rsp[4] >> 2) & (~1),
+ (struct ipmi_addr *) &(ipmb_addr),
+ &recv_msg))
+ {
+ /* We were unable to find the sequence number,
+ so just nuke the message. */
+ spin_lock_irqsave(&intf->counter_lock, flags);
+ intf->unhandled_ipmb_responses++;
+ spin_unlock_irqrestore(&intf->counter_lock, flags);
+ return 0;
+ }
+
+ memcpy(recv_msg->msg_data,
+ &(msg->rsp[9]),
+ msg->rsp_size - 9);
+ /* THe other fields matched, so no need to set them, except
+ for netfn, which needs to be the response that was
+ returned, not the request value. */
+ recv_msg->msg.netfn = msg->rsp[4] >> 2;
+ recv_msg->msg.data = recv_msg->msg_data;
+ recv_msg->msg.data_len = msg->rsp_size - 10;
+ recv_msg->recv_type = IPMI_RESPONSE_RECV_TYPE;
+ spin_lock_irqsave(&intf->counter_lock, flags);
+ intf->handled_ipmb_responses++;
+ spin_unlock_irqrestore(&intf->counter_lock, flags);
+ deliver_response(recv_msg);
+
+ return 0;
+}
+
+static int handle_ipmb_get_msg_cmd(ipmi_smi_t intf,
+ struct ipmi_smi_msg *msg)
+{
+ struct cmd_rcvr *rcvr;
+ int rv = 0;
+ unsigned char netfn;
+ unsigned char cmd;
+ unsigned char chan;
+ ipmi_user_t user = NULL;
+ struct ipmi_ipmb_addr *ipmb_addr;
+ struct ipmi_recv_msg *recv_msg;
+ unsigned long flags;
+ struct ipmi_smi_handlers *handlers;
+
+ if (msg->rsp_size < 10) {
+ /* Message not big enough, just ignore it. */
+ spin_lock_irqsave(&intf->counter_lock, flags);
+ intf->invalid_commands++;
+ spin_unlock_irqrestore(&intf->counter_lock, flags);
+ return 0;
+ }
+
+ if (msg->rsp[2] != 0) {
+ /* An error getting the response, just ignore it. */
+ return 0;
+ }
+
+ netfn = msg->rsp[4] >> 2;
+ cmd = msg->rsp[8];
+ chan = msg->rsp[3] & 0xf;
+
+ rcu_read_lock();
+ rcvr = find_cmd_rcvr(intf, netfn, cmd, chan);
+ if (rcvr) {
+ user = rcvr->user;
+ kref_get(&user->refcount);
+ } else
+ user = NULL;
+ rcu_read_unlock();
+
+ if (user == NULL) {
+ /* We didn't find a user, deliver an error response. */
+ spin_lock_irqsave(&intf->counter_lock, flags);
+ intf->unhandled_commands++;
+ spin_unlock_irqrestore(&intf->counter_lock, flags);
+
+ msg->data[0] = (IPMI_NETFN_APP_REQUEST << 2);
+ msg->data[1] = IPMI_SEND_MSG_CMD;
+ msg->data[2] = msg->rsp[3];
+ msg->data[3] = msg->rsp[6];
+ msg->data[4] = ((netfn + 1) << 2) | (msg->rsp[7] & 0x3);
+ msg->data[5] = ipmb_checksum(&(msg->data[3]), 2);
+ msg->data[6] = intf->channels[msg->rsp[3] & 0xf].address;
+ /* rqseq/lun */
+ msg->data[7] = (msg->rsp[7] & 0xfc) | (msg->rsp[4] & 0x3);
+ msg->data[8] = msg->rsp[8]; /* cmd */
+ msg->data[9] = IPMI_INVALID_CMD_COMPLETION_CODE;
+ msg->data[10] = ipmb_checksum(&(msg->data[6]), 4);
+ msg->data_size = 11;
+
+#ifdef DEBUG_MSGING
+ {
+ int m;
+ printk("Invalid command:");
+ for (m = 0; m < msg->data_size; m++)
+ printk(" %2.2x", msg->data[m]);
+ printk("\n");
+ }
+#endif
+ rcu_read_lock();
+ handlers = intf->handlers;
+ if (handlers) {
+ handlers->sender(intf->send_info, msg, 0);
+ /* We used the message, so return the value
+ that causes it to not be freed or
+ queued. */
+ rv = -1;
+ }
+ rcu_read_unlock();
+ } else {
+ /* Deliver the message to the user. */
+ spin_lock_irqsave(&intf->counter_lock, flags);
+ intf->handled_commands++;
+ spin_unlock_irqrestore(&intf->counter_lock, flags);
+
+ recv_msg = ipmi_alloc_recv_msg();
+ if (!recv_msg) {
+ /* We couldn't allocate memory for the
+ message, so requeue it for handling
+ later. */
+ rv = 1;
+ kref_put(&user->refcount, free_user);
+ } else {
+ /* Extract the source address from the data. */
+ ipmb_addr = (struct ipmi_ipmb_addr *) &recv_msg->addr;
+ ipmb_addr->addr_type = IPMI_IPMB_ADDR_TYPE;
+ ipmb_addr->slave_addr = msg->rsp[6];
+ ipmb_addr->lun = msg->rsp[7] & 3;
+ ipmb_addr->channel = msg->rsp[3] & 0xf;
+
+ /* Extract the rest of the message information
+ from the IPMB header.*/
+ recv_msg->user = user;
+ recv_msg->recv_type = IPMI_CMD_RECV_TYPE;
+ recv_msg->msgid = msg->rsp[7] >> 2;
+ recv_msg->msg.netfn = msg->rsp[4] >> 2;
+ recv_msg->msg.cmd = msg->rsp[8];
+ recv_msg->msg.data = recv_msg->msg_data;
+
+ /* We chop off 10, not 9 bytes because the checksum
+ at the end also needs to be removed. */
+ recv_msg->msg.data_len = msg->rsp_size - 10;
+ memcpy(recv_msg->msg_data,
+ &(msg->rsp[9]),
+ msg->rsp_size - 10);
+ deliver_response(recv_msg);
+ }
+ }
+
+ return rv;
+}
+
+static int handle_lan_get_msg_rsp(ipmi_smi_t intf,
+ struct ipmi_smi_msg *msg)
+{
+ struct ipmi_lan_addr lan_addr;
+ struct ipmi_recv_msg *recv_msg;
+ unsigned long flags;
+
+
+ /* This is 13, not 12, because the response must contain a
+ * completion code. */
+ if (msg->rsp_size < 13) {
+ /* Message not big enough, just ignore it. */
+ spin_lock_irqsave(&intf->counter_lock, flags);
+ intf->invalid_lan_responses++;
+ spin_unlock_irqrestore(&intf->counter_lock, flags);
+ return 0;
+ }
+
+ if (msg->rsp[2] != 0) {
+ /* An error getting the response, just ignore it. */
+ return 0;
+ }
+
+ lan_addr.addr_type = IPMI_LAN_ADDR_TYPE;
+ lan_addr.session_handle = msg->rsp[4];
+ lan_addr.remote_SWID = msg->rsp[8];
+ lan_addr.local_SWID = msg->rsp[5];
+ lan_addr.channel = msg->rsp[3] & 0x0f;
+ lan_addr.privilege = msg->rsp[3] >> 4;
+ lan_addr.lun = msg->rsp[9] & 3;
+
+ /* It's a response from a remote entity. Look up the sequence
+ number and handle the response. */
+ if (intf_find_seq(intf,
+ msg->rsp[9] >> 2,
+ msg->rsp[3] & 0x0f,
+ msg->rsp[10],
+ (msg->rsp[6] >> 2) & (~1),
+ (struct ipmi_addr *) &(lan_addr),
+ &recv_msg))
+ {
+ /* We were unable to find the sequence number,
+ so just nuke the message. */
+ spin_lock_irqsave(&intf->counter_lock, flags);
+ intf->unhandled_lan_responses++;
+ spin_unlock_irqrestore(&intf->counter_lock, flags);
+ return 0;
+ }
+
+ memcpy(recv_msg->msg_data,
+ &(msg->rsp[11]),
+ msg->rsp_size - 11);
+ /* The other fields matched, so no need to set them, except
+ for netfn, which needs to be the response that was
+ returned, not the request value. */
+ recv_msg->msg.netfn = msg->rsp[6] >> 2;
+ recv_msg->msg.data = recv_msg->msg_data;
+ recv_msg->msg.data_len = msg->rsp_size - 12;
+ recv_msg->recv_type = IPMI_RESPONSE_RECV_TYPE;
+ spin_lock_irqsave(&intf->counter_lock, flags);
+ intf->handled_lan_responses++;
+ spin_unlock_irqrestore(&intf->counter_lock, flags);
+ deliver_response(recv_msg);
+
+ return 0;
+}
+
+static int handle_lan_get_msg_cmd(ipmi_smi_t intf,
+ struct ipmi_smi_msg *msg)
+{
+ struct cmd_rcvr *rcvr;
+ int rv = 0;
+ unsigned char netfn;
+ unsigned char cmd;
+ unsigned char chan;
+ ipmi_user_t user = NULL;
+ struct ipmi_lan_addr *lan_addr;
+ struct ipmi_recv_msg *recv_msg;
+ unsigned long flags;
+
+ if (msg->rsp_size < 12) {
+ /* Message not big enough, just ignore it. */
+ spin_lock_irqsave(&intf->counter_lock, flags);
+ intf->invalid_commands++;
+ spin_unlock_irqrestore(&intf->counter_lock, flags);
+ return 0;
+ }
+
+ if (msg->rsp[2] != 0) {
+ /* An error getting the response, just ignore it. */
+ return 0;
+ }
+
+ netfn = msg->rsp[6] >> 2;
+ cmd = msg->rsp[10];
+ chan = msg->rsp[3] & 0xf;
+
+ rcu_read_lock();
+ rcvr = find_cmd_rcvr(intf, netfn, cmd, chan);
+ if (rcvr) {
+ user = rcvr->user;
+ kref_get(&user->refcount);
+ } else
+ user = NULL;
+ rcu_read_unlock();
+
+ if (user == NULL) {
+ /* We didn't find a user, just give up. */
+ spin_lock_irqsave(&intf->counter_lock, flags);
+ intf->unhandled_commands++;
+ spin_unlock_irqrestore(&intf->counter_lock, flags);
+
+ rv = 0; /* Don't do anything with these messages, just
+ allow them to be freed. */
+ } else {
+ /* Deliver the message to the user. */
+ spin_lock_irqsave(&intf->counter_lock, flags);
+ intf->handled_commands++;
+ spin_unlock_irqrestore(&intf->counter_lock, flags);
+
+ recv_msg = ipmi_alloc_recv_msg();
+ if (!recv_msg) {
+ /* We couldn't allocate memory for the
+ message, so requeue it for handling
+ later. */
+ rv = 1;
+ kref_put(&user->refcount, free_user);
+ } else {
+ /* Extract the source address from the data. */
+ lan_addr = (struct ipmi_lan_addr *) &recv_msg->addr;
+ lan_addr->addr_type = IPMI_LAN_ADDR_TYPE;
+ lan_addr->session_handle = msg->rsp[4];
+ lan_addr->remote_SWID = msg->rsp[8];
+ lan_addr->local_SWID = msg->rsp[5];
+ lan_addr->lun = msg->rsp[9] & 3;
+ lan_addr->channel = msg->rsp[3] & 0xf;
+ lan_addr->privilege = msg->rsp[3] >> 4;
+
+ /* Extract the rest of the message information
+ from the IPMB header.*/
+ recv_msg->user = user;
+ recv_msg->recv_type = IPMI_CMD_RECV_TYPE;
+ recv_msg->msgid = msg->rsp[9] >> 2;
+ recv_msg->msg.netfn = msg->rsp[6] >> 2;
+ recv_msg->msg.cmd = msg->rsp[10];
+ recv_msg->msg.data = recv_msg->msg_data;
+
+ /* We chop off 12, not 11 bytes because the checksum
+ at the end also needs to be removed. */
+ recv_msg->msg.data_len = msg->rsp_size - 12;
+ memcpy(recv_msg->msg_data,
+ &(msg->rsp[11]),
+ msg->rsp_size - 12);
+ deliver_response(recv_msg);
+ }
+ }
+
+ return rv;
+}
+
+static void copy_event_into_recv_msg(struct ipmi_recv_msg *recv_msg,
+ struct ipmi_smi_msg *msg)
+{
+ struct ipmi_system_interface_addr *smi_addr;
+
+ recv_msg->msgid = 0;
+ smi_addr = (struct ipmi_system_interface_addr *) &(recv_msg->addr);
+ smi_addr->addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE;
+ smi_addr->channel = IPMI_BMC_CHANNEL;
+ smi_addr->lun = msg->rsp[0] & 3;
+ recv_msg->recv_type = IPMI_ASYNC_EVENT_RECV_TYPE;
+ recv_msg->msg.netfn = msg->rsp[0] >> 2;
+ recv_msg->msg.cmd = msg->rsp[1];
+ memcpy(recv_msg->msg_data, &(msg->rsp[3]), msg->rsp_size - 3);
+ recv_msg->msg.data = recv_msg->msg_data;
+ recv_msg->msg.data_len = msg->rsp_size - 3;
+}
+
+static int handle_read_event_rsp(ipmi_smi_t intf,
+ struct ipmi_smi_msg *msg)
+{
+ struct ipmi_recv_msg *recv_msg, *recv_msg2;
+ struct list_head msgs;
+ ipmi_user_t user;
+ int rv = 0;
+ int deliver_count = 0;
+ unsigned long flags;
+
+ if (msg->rsp_size < 19) {
+ /* Message is too small to be an IPMB event. */
+ spin_lock_irqsave(&intf->counter_lock, flags);
+ intf->invalid_events++;
+ spin_unlock_irqrestore(&intf->counter_lock, flags);
+ return 0;
+ }
+
+ if (msg->rsp[2] != 0) {
+ /* An error getting the event, just ignore it. */
+ return 0;
+ }
+
+ INIT_LIST_HEAD(&msgs);
+
+ spin_lock_irqsave(&intf->events_lock, flags);
+
+ spin_lock(&intf->counter_lock);
+ intf->events++;
+ spin_unlock(&intf->counter_lock);
+
+ /* Allocate and fill in one message for every user that is getting
+ events. */
+ rcu_read_lock();
+ list_for_each_entry_rcu(user, &intf->users, link) {
+ if (!user->gets_events)
+ continue;
+
+ recv_msg = ipmi_alloc_recv_msg();
+ if (!recv_msg) {
+ rcu_read_unlock();
+ list_for_each_entry_safe(recv_msg, recv_msg2, &msgs,
+ link) {
+ list_del(&recv_msg->link);
+ ipmi_free_recv_msg(recv_msg);
+ }
+ /* We couldn't allocate memory for the
+ message, so requeue it for handling
+ later. */
+ rv = 1;
+ goto out;
+ }
+
+ deliver_count++;
+
+ copy_event_into_recv_msg(recv_msg, msg);
+ recv_msg->user = user;
+ kref_get(&user->refcount);
+ list_add_tail(&(recv_msg->link), &msgs);
+ }
+ rcu_read_unlock();
+
+ if (deliver_count) {
+ /* Now deliver all the messages. */
+ list_for_each_entry_safe(recv_msg, recv_msg2, &msgs, link) {
+ list_del(&recv_msg->link);
+ deliver_response(recv_msg);
+ }
+ } else if (intf->waiting_events_count < MAX_EVENTS_IN_QUEUE) {
+ /* No one to receive the message, put it in queue if there's
+ not already too many things in the queue. */
+ recv_msg = ipmi_alloc_recv_msg();
+ if (!recv_msg) {
+ /* We couldn't allocate memory for the
+ message, so requeue it for handling
+ later. */
+ rv = 1;
+ goto out;
+ }
+
+ copy_event_into_recv_msg(recv_msg, msg);
+ list_add_tail(&(recv_msg->link), &(intf->waiting_events));
+ intf->waiting_events_count++;
+ } else {
+ /* There's too many things in the queue, discard this
+ message. */
+ printk(KERN_WARNING PFX "Event queue full, discarding an"
+ " incoming event\n");
+ }
+
+ out:
+ spin_unlock_irqrestore(&(intf->events_lock), flags);
+
+ return rv;
+}
+
+static int handle_bmc_rsp(ipmi_smi_t intf,
+ struct ipmi_smi_msg *msg)
+{
+ struct ipmi_recv_msg *recv_msg;
+ unsigned long flags;
+ struct ipmi_user *user;
+
+ recv_msg = (struct ipmi_recv_msg *) msg->user_data;
+ if (recv_msg == NULL)
+ {
+ printk(KERN_WARNING"IPMI message received with no owner. This\n"
+ "could be because of a malformed message, or\n"
+ "because of a hardware error. Contact your\n"
+ "hardware vender for assistance\n");
+ return 0;
+ }
+
+ user = recv_msg->user;
+ /* Make sure the user still exists. */
+ if (user && !user->valid) {
+ /* The user for the message went away, so give up. */
+ spin_lock_irqsave(&intf->counter_lock, flags);
+ intf->unhandled_local_responses++;
+ spin_unlock_irqrestore(&intf->counter_lock, flags);
+ ipmi_free_recv_msg(recv_msg);
+ } else {
+ struct ipmi_system_interface_addr *smi_addr;
+
+ spin_lock_irqsave(&intf->counter_lock, flags);
+ intf->handled_local_responses++;
+ spin_unlock_irqrestore(&intf->counter_lock, flags);
+ recv_msg->recv_type = IPMI_RESPONSE_RECV_TYPE;
+ recv_msg->msgid = msg->msgid;
+ smi_addr = ((struct ipmi_system_interface_addr *)
+ &(recv_msg->addr));
+ smi_addr->addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE;
+ smi_addr->channel = IPMI_BMC_CHANNEL;
+ smi_addr->lun = msg->rsp[0] & 3;
+ recv_msg->msg.netfn = msg->rsp[0] >> 2;
+ recv_msg->msg.cmd = msg->rsp[1];
+ memcpy(recv_msg->msg_data,
+ &(msg->rsp[2]),
+ msg->rsp_size - 2);
+ recv_msg->msg.data = recv_msg->msg_data;
+ recv_msg->msg.data_len = msg->rsp_size - 2;
+ deliver_response(recv_msg);
+ }
+
+ return 0;
+}
+
+/* Handle a new message. Return 1 if the message should be requeued,
+ 0 if the message should be freed, or -1 if the message should not
+ be freed or requeued. */
+static int handle_new_recv_msg(ipmi_smi_t intf,
+ struct ipmi_smi_msg *msg)
+{
+ int requeue;
+ int chan;
+
+#ifdef DEBUG_MSGING
+ int m;
+ printk("Recv:");
+ for (m = 0; m < msg->rsp_size; m++)
+ printk(" %2.2x", msg->rsp[m]);
+ printk("\n");
+#endif
+ if (msg->rsp_size < 2) {
+ /* Message is too small to be correct. */
+ printk(KERN_WARNING PFX "BMC returned to small a message"
+ " for netfn %x cmd %x, got %d bytes\n",
+ (msg->data[0] >> 2) | 1, msg->data[1], msg->rsp_size);
+
+ /* Generate an error response for the message. */
+ msg->rsp[0] = msg->data[0] | (1 << 2);
+ msg->rsp[1] = msg->data[1];
+ msg->rsp[2] = IPMI_ERR_UNSPECIFIED;
+ msg->rsp_size = 3;
+ } else if (((msg->rsp[0] >> 2) != ((msg->data[0] >> 2) | 1))/* Netfn */
+ || (msg->rsp[1] != msg->data[1])) /* Command */
+ {
+ /* The response is not even marginally correct. */
+ printk(KERN_WARNING PFX "BMC returned incorrect response,"
+ " expected netfn %x cmd %x, got netfn %x cmd %x\n",
+ (msg->data[0] >> 2) | 1, msg->data[1],
+ msg->rsp[0] >> 2, msg->rsp[1]);
+
+ /* Generate an error response for the message. */
+ msg->rsp[0] = msg->data[0] | (1 << 2);
+ msg->rsp[1] = msg->data[1];
+ msg->rsp[2] = IPMI_ERR_UNSPECIFIED;
+ msg->rsp_size = 3;
+ }
+
+ if ((msg->rsp[0] == ((IPMI_NETFN_APP_REQUEST|1) << 2))
+ && (msg->rsp[1] == IPMI_SEND_MSG_CMD)
+ && (msg->user_data != NULL))
+ {
+ /* It's a response to a response we sent. For this we
+ deliver a send message response to the user. */
+ struct ipmi_recv_msg *recv_msg = msg->user_data;
+
+ requeue = 0;
+ if (msg->rsp_size < 2)
+ /* Message is too small to be correct. */
+ goto out;
+
+ chan = msg->data[2] & 0x0f;
+ if (chan >= IPMI_MAX_CHANNELS)
+ /* Invalid channel number */
+ goto out;
+
+ if (!recv_msg)
+ goto out;
+
+ /* Make sure the user still exists. */
+ if (!recv_msg->user || !recv_msg->user->valid)
+ goto out;
+
+ recv_msg->recv_type = IPMI_RESPONSE_RESPONSE_TYPE;
+ recv_msg->msg.data = recv_msg->msg_data;
+ recv_msg->msg.data_len = 1;
+ recv_msg->msg_data[0] = msg->rsp[2];
+ deliver_response(recv_msg);
+ } else if ((msg->rsp[0] == ((IPMI_NETFN_APP_REQUEST|1) << 2))
+ && (msg->rsp[1] == IPMI_GET_MSG_CMD))
+ {
+ /* It's from the receive queue. */
+ chan = msg->rsp[3] & 0xf;
+ if (chan >= IPMI_MAX_CHANNELS) {
+ /* Invalid channel number */
+ requeue = 0;
+ goto out;
+ }
+
+ switch (intf->channels[chan].medium) {
+ case IPMI_CHANNEL_MEDIUM_IPMB:
+ if (msg->rsp[4] & 0x04) {
+ /* It's a response, so find the
+ requesting message and send it up. */
+ requeue = handle_ipmb_get_msg_rsp(intf, msg);
+ } else {
+ /* It's a command to the SMS from some other
+ entity. Handle that. */
+ requeue = handle_ipmb_get_msg_cmd(intf, msg);
+ }
+ break;
+
+ case IPMI_CHANNEL_MEDIUM_8023LAN:
+ case IPMI_CHANNEL_MEDIUM_ASYNC:
+ if (msg->rsp[6] & 0x04) {
+ /* It's a response, so find the
+ requesting message and send it up. */
+ requeue = handle_lan_get_msg_rsp(intf, msg);
+ } else {
+ /* It's a command to the SMS from some other
+ entity. Handle that. */
+ requeue = handle_lan_get_msg_cmd(intf, msg);
+ }
+ break;
+
+ default:
+ /* We don't handle the channel type, so just
+ * free the message. */
+ requeue = 0;
+ }
+
+ } else if ((msg->rsp[0] == ((IPMI_NETFN_APP_REQUEST|1) << 2))
+ && (msg->rsp[1] == IPMI_READ_EVENT_MSG_BUFFER_CMD))
+ {
+ /* It's an asyncronous event. */
+ requeue = handle_read_event_rsp(intf, msg);
+ } else {
+ /* It's a response from the local BMC. */
+ requeue = handle_bmc_rsp(intf, msg);
+ }
+
+ out:
+ return requeue;
+}
+
+/* Handle a new message from the lower layer. */
+void ipmi_smi_msg_received(ipmi_smi_t intf,
+ struct ipmi_smi_msg *msg)
+{
+ unsigned long flags;
+ int rv;
+
+
+ if ((msg->data_size >= 2)
+ && (msg->data[0] == (IPMI_NETFN_APP_REQUEST << 2))
+ && (msg->data[1] == IPMI_SEND_MSG_CMD)
+ && (msg->user_data == NULL))
+ {
+ /* This is the local response to a command send, start
+ the timer for these. The user_data will not be
+ NULL if this is a response send, and we will let
+ response sends just go through. */
+
+ /* Check for errors, if we get certain errors (ones
+ that mean basically we can try again later), we
+ ignore them and start the timer. Otherwise we
+ report the error immediately. */
+ if ((msg->rsp_size >= 3) && (msg->rsp[2] != 0)
+ && (msg->rsp[2] != IPMI_NODE_BUSY_ERR)
+ && (msg->rsp[2] != IPMI_LOST_ARBITRATION_ERR)
+ && (msg->rsp[2] != IPMI_BUS_ERR)
+ && (msg->rsp[2] != IPMI_NAK_ON_WRITE_ERR))
+ {
+ int chan = msg->rsp[3] & 0xf;
+
+ /* Got an error sending the message, handle it. */
+ spin_lock_irqsave(&intf->counter_lock, flags);
+ if (chan >= IPMI_MAX_CHANNELS)
+ ; /* This shouldn't happen */
+ else if ((intf->channels[chan].medium
+ == IPMI_CHANNEL_MEDIUM_8023LAN)
+ || (intf->channels[chan].medium
+ == IPMI_CHANNEL_MEDIUM_ASYNC))
+ intf->sent_lan_command_errs++;
+ else
+ intf->sent_ipmb_command_errs++;
+ spin_unlock_irqrestore(&intf->counter_lock, flags);
+ intf_err_seq(intf, msg->msgid, msg->rsp[2]);
+ } else {
+ /* The message was sent, start the timer. */
+ intf_start_seq_timer(intf, msg->msgid);
+ }
+
+ ipmi_free_smi_msg(msg);
+ goto out;
+ }
+
+ /* To preserve message order, if the list is not empty, we
+ tack this message onto the end of the list. */
+ spin_lock_irqsave(&intf->waiting_msgs_lock, flags);
+ if (!list_empty(&intf->waiting_msgs)) {
+ list_add_tail(&msg->link, &intf->waiting_msgs);
+ spin_unlock_irqrestore(&intf->waiting_msgs_lock, flags);
+ goto out;
+ }
+ spin_unlock_irqrestore(&intf->waiting_msgs_lock, flags);
+
+ rv = handle_new_recv_msg(intf, msg);
+ if (rv > 0) {
+ /* Could not handle the message now, just add it to a
+ list to handle later. */
+ spin_lock_irqsave(&intf->waiting_msgs_lock, flags);
+ list_add_tail(&msg->link, &intf->waiting_msgs);
+ spin_unlock_irqrestore(&intf->waiting_msgs_lock, flags);
+ } else if (rv == 0) {
+ ipmi_free_smi_msg(msg);
+ }
+
+ out:
+ return;
+}
+
+void ipmi_smi_watchdog_pretimeout(ipmi_smi_t intf)
+{
+ ipmi_user_t user;
+
+ rcu_read_lock();
+ list_for_each_entry_rcu(user, &intf->users, link) {
+ if (!user->handler->ipmi_watchdog_pretimeout)
+ continue;
+
+ user->handler->ipmi_watchdog_pretimeout(user->handler_data);
+ }
+ rcu_read_unlock();
+}
+
+
+static struct ipmi_smi_msg *
+smi_from_recv_msg(ipmi_smi_t intf, struct ipmi_recv_msg *recv_msg,
+ unsigned char seq, long seqid)
+{
+ struct ipmi_smi_msg *smi_msg = ipmi_alloc_smi_msg();
+ if (!smi_msg)
+ /* If we can't allocate the message, then just return, we
+ get 4 retries, so this should be ok. */
+ return NULL;
+
+ memcpy(smi_msg->data, recv_msg->msg.data, recv_msg->msg.data_len);
+ smi_msg->data_size = recv_msg->msg.data_len;
+ smi_msg->msgid = STORE_SEQ_IN_MSGID(seq, seqid);
+
+#ifdef DEBUG_MSGING
+ {
+ int m;
+ printk("Resend: ");
+ for (m = 0; m < smi_msg->data_size; m++)
+ printk(" %2.2x", smi_msg->data[m]);
+ printk("\n");
+ }
+#endif
+ return smi_msg;
+}
+
+static void check_msg_timeout(ipmi_smi_t intf, struct seq_table *ent,
+ struct list_head *timeouts, long timeout_period,
+ int slot, unsigned long *flags)
+{
+ struct ipmi_recv_msg *msg;
+ struct ipmi_smi_handlers *handlers;
+
+ if (intf->intf_num == -1)
+ return;
+
+ if (!ent->inuse)
+ return;
+
+ ent->timeout -= timeout_period;
+ if (ent->timeout > 0)
+ return;
+
+ if (ent->retries_left == 0) {
+ /* The message has used all its retries. */
+ ent->inuse = 0;
+ msg = ent->recv_msg;
+ list_add_tail(&msg->link, timeouts);
+ spin_lock(&intf->counter_lock);
+ if (ent->broadcast)
+ intf->timed_out_ipmb_broadcasts++;
+ else if (ent->recv_msg->addr.addr_type == IPMI_LAN_ADDR_TYPE)
+ intf->timed_out_lan_commands++;
+ else
+ intf->timed_out_ipmb_commands++;
+ spin_unlock(&intf->counter_lock);
+ } else {
+ struct ipmi_smi_msg *smi_msg;
+ /* More retries, send again. */
+
+ /* Start with the max timer, set to normal
+ timer after the message is sent. */
+ ent->timeout = MAX_MSG_TIMEOUT;
+ ent->retries_left--;
+ spin_lock(&intf->counter_lock);
+ if (ent->recv_msg->addr.addr_type == IPMI_LAN_ADDR_TYPE)
+ intf->retransmitted_lan_commands++;
+ else
+ intf->retransmitted_ipmb_commands++;
+ spin_unlock(&intf->counter_lock);
+
+ smi_msg = smi_from_recv_msg(intf, ent->recv_msg, slot,
+ ent->seqid);
+ if (!smi_msg)
+ return;
+
+ spin_unlock_irqrestore(&intf->seq_lock, *flags);
+
+ /* Send the new message. We send with a zero
+ * priority. It timed out, I doubt time is
+ * that critical now, and high priority
+ * messages are really only for messages to the
+ * local MC, which don't get resent. */
+ handlers = intf->handlers;
+ if (handlers)
+ intf->handlers->sender(intf->send_info,
+ smi_msg, 0);
+ else
+ ipmi_free_smi_msg(smi_msg);
+
+ spin_lock_irqsave(&intf->seq_lock, *flags);
+ }
+}
+
+static void ipmi_timeout_handler(long timeout_period)
+{
+ ipmi_smi_t intf;
+ struct list_head timeouts;
+ struct ipmi_recv_msg *msg, *msg2;
+ struct ipmi_smi_msg *smi_msg, *smi_msg2;
+ unsigned long flags;
+ int i;
+
+ rcu_read_lock();
+ list_for_each_entry_rcu(intf, &ipmi_interfaces, link) {
+ /* See if any waiting messages need to be processed. */
+ spin_lock_irqsave(&intf->waiting_msgs_lock, flags);
+ list_for_each_entry_safe(smi_msg, smi_msg2,
+ &intf->waiting_msgs, link) {
+ if (!handle_new_recv_msg(intf, smi_msg)) {
+ list_del(&smi_msg->link);
+ ipmi_free_smi_msg(smi_msg);
+ } else {
+ /* To preserve message order, quit if we
+ can't handle a message. */
+ break;
+ }
+ }
+ spin_unlock_irqrestore(&intf->waiting_msgs_lock, flags);
+
+ /* Go through the seq table and find any messages that
+ have timed out, putting them in the timeouts
+ list. */
+ INIT_LIST_HEAD(&timeouts);
+ spin_lock_irqsave(&intf->seq_lock, flags);
+ for (i = 0; i < IPMI_IPMB_NUM_SEQ; i++)
+ check_msg_timeout(intf, &(intf->seq_table[i]),
+ &timeouts, timeout_period, i,
+ &flags);
+ spin_unlock_irqrestore(&intf->seq_lock, flags);
+
+ list_for_each_entry_safe(msg, msg2, &timeouts, link)
+ deliver_err_response(msg, IPMI_TIMEOUT_COMPLETION_CODE);
+
+ /*
+ * Maintenance mode handling. Check the timeout
+ * optimistically before we claim the lock. It may
+ * mean a timeout gets missed occasionally, but that
+ * only means the timeout gets extended by one period
+ * in that case. No big deal, and it avoids the lock
+ * most of the time.
+ */
+ if (intf->auto_maintenance_timeout > 0) {
+ spin_lock_irqsave(&intf->maintenance_mode_lock, flags);
+ if (intf->auto_maintenance_timeout > 0) {
+ intf->auto_maintenance_timeout
+ -= timeout_period;
+ if (!intf->maintenance_mode
+ && (intf->auto_maintenance_timeout <= 0))
+ {
+ intf->maintenance_mode_enable = 0;
+ maintenance_mode_update(intf);
+ }
+ }
+ spin_unlock_irqrestore(&intf->maintenance_mode_lock,
+ flags);
+ }
+ }
+ rcu_read_unlock();
+}
+
+static void ipmi_request_event(void)
+{
+ ipmi_smi_t intf;
+ struct ipmi_smi_handlers *handlers;
+
+ rcu_read_lock();
+ /* Called from the timer, no need to check if handlers is
+ * valid. */
+ list_for_each_entry_rcu(intf, &ipmi_interfaces, link) {
+ /* No event requests when in maintenance mode. */
+ if (intf->maintenance_mode_enable)
+ continue;
+
+ handlers = intf->handlers;
+ if (handlers)
+ handlers->request_events(intf->send_info);
+ }
+ rcu_read_unlock();
+}
+
+static struct timer_list ipmi_timer;
+
+/* Call every ~100 ms. */
+#define IPMI_TIMEOUT_TIME 100
+
+/* How many jiffies does it take to get to the timeout time. */
+#define IPMI_TIMEOUT_JIFFIES ((IPMI_TIMEOUT_TIME * HZ) / 1000)
+
+/* Request events from the queue every second (this is the number of
+ IPMI_TIMEOUT_TIMES between event requests). Hopefully, in the
+ future, IPMI will add a way to know immediately if an event is in
+ the queue and this silliness can go away. */
+#define IPMI_REQUEST_EV_TIME (1000 / (IPMI_TIMEOUT_TIME))
+
+static atomic_t stop_operation;
+static unsigned int ticks_to_req_ev = IPMI_REQUEST_EV_TIME;
+
+static void ipmi_timeout(unsigned long data)
+{
+ if (atomic_read(&stop_operation))
+ return;
+
+ ticks_to_req_ev--;
+ if (ticks_to_req_ev == 0) {
+ ipmi_request_event();
+ ticks_to_req_ev = IPMI_REQUEST_EV_TIME;
+ }
+
+ ipmi_timeout_handler(IPMI_TIMEOUT_TIME);
+
+ mod_timer(&ipmi_timer, jiffies + IPMI_TIMEOUT_JIFFIES);
+}
+
+
+static atomic_t smi_msg_inuse_count = ATOMIC_INIT(0);
+static atomic_t recv_msg_inuse_count = ATOMIC_INIT(0);
+
+/* FIXME - convert these to slabs. */
+static void free_smi_msg(struct ipmi_smi_msg *msg)
+{
+ atomic_dec(&smi_msg_inuse_count);
+ kfree(msg);
+}
+
+struct ipmi_smi_msg *ipmi_alloc_smi_msg(void)
+{
+ struct ipmi_smi_msg *rv;
+ rv = kmalloc(sizeof(struct ipmi_smi_msg), GFP_ATOMIC);
+ if (rv) {
+ rv->done = free_smi_msg;
+ rv->user_data = NULL;
+ atomic_inc(&smi_msg_inuse_count);
+ }
+ return rv;
+}
+
+static void free_recv_msg(struct ipmi_recv_msg *msg)
+{
+ atomic_dec(&recv_msg_inuse_count);
+ kfree(msg);
+}
+
+struct ipmi_recv_msg *ipmi_alloc_recv_msg(void)
+{
+ struct ipmi_recv_msg *rv;
+
+ rv = kmalloc(sizeof(struct ipmi_recv_msg), GFP_ATOMIC);
+ if (rv) {
+ rv->user = NULL;
+ rv->done = free_recv_msg;
+ atomic_inc(&recv_msg_inuse_count);
+ }
+ return rv;
+}
+
+void ipmi_free_recv_msg(struct ipmi_recv_msg *msg)
+{
+ if (msg->user)
+ kref_put(&msg->user->refcount, free_user);
+ msg->done(msg);
+}
+
+#ifdef CONFIG_IPMI_PANIC_EVENT
+
+static void dummy_smi_done_handler(struct ipmi_smi_msg *msg)
+{
+}
+
+static void dummy_recv_done_handler(struct ipmi_recv_msg *msg)
+{
+}
+
+#ifdef CONFIG_IPMI_PANIC_STRING
+static void event_receiver_fetcher(ipmi_smi_t intf, struct ipmi_recv_msg *msg)
+{
+ if ((msg->addr.addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE)
+ && (msg->msg.netfn == IPMI_NETFN_SENSOR_EVENT_RESPONSE)
+ && (msg->msg.cmd == IPMI_GET_EVENT_RECEIVER_CMD)
+ && (msg->msg.data[0] == IPMI_CC_NO_ERROR))
+ {
+ /* A get event receiver command, save it. */
+ intf->event_receiver = msg->msg.data[1];
+ intf->event_receiver_lun = msg->msg.data[2] & 0x3;
+ }
+}
+
+static void device_id_fetcher(ipmi_smi_t intf, struct ipmi_recv_msg *msg)
+{
+ if ((msg->addr.addr_type == IPMI_SYSTEM_INTERFACE_ADDR_TYPE)
+ && (msg->msg.netfn == IPMI_NETFN_APP_RESPONSE)
+ && (msg->msg.cmd == IPMI_GET_DEVICE_ID_CMD)
+ && (msg->msg.data[0] == IPMI_CC_NO_ERROR))
+ {
+ /* A get device id command, save if we are an event
+ receiver or generator. */
+ intf->local_sel_device = (msg->msg.data[6] >> 2) & 1;
+ intf->local_event_generator = (msg->msg.data[6] >> 5) & 1;
+ }
+}
+#endif
+
+static void send_panic_events(char *str)
+{
+ struct kernel_ipmi_msg msg;
+ ipmi_smi_t intf;
+ unsigned char data[16];
+ struct ipmi_system_interface_addr *si;
+ struct ipmi_addr addr;
+ struct ipmi_smi_msg smi_msg;
+ struct ipmi_recv_msg recv_msg;
+
+ si = (struct ipmi_system_interface_addr *) &addr;
+ si->addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE;
+ si->channel = IPMI_BMC_CHANNEL;
+ si->lun = 0;
+
+ /* Fill in an event telling that we have failed. */
+ msg.netfn = 0x04; /* Sensor or Event. */
+ msg.cmd = 2; /* Platform event command. */
+ msg.data = data;
+ msg.data_len = 8;
+ data[0] = 0x41; /* Kernel generator ID, IPMI table 5-4 */
+ data[1] = 0x03; /* This is for IPMI 1.0. */
+ data[2] = 0x20; /* OS Critical Stop, IPMI table 36-3 */
+ data[4] = 0x6f; /* Sensor specific, IPMI table 36-1 */
+ data[5] = 0xa1; /* Runtime stop OEM bytes 2 & 3. */
+
+ /* Put a few breadcrumbs in. Hopefully later we can add more things
+ to make the panic events more useful. */
+ if (str) {
+ data[3] = str[0];
+ data[6] = str[1];
+ data[7] = str[2];
+ }
+
+ smi_msg.done = dummy_smi_done_handler;
+ recv_msg.done = dummy_recv_done_handler;
+
+ /* For every registered interface, send the event. */
+ list_for_each_entry_rcu(intf, &ipmi_interfaces, link) {
+ if (!intf->handlers)
+ /* Interface is not ready. */
+ continue;
+
+ /* Send the event announcing the panic. */
+ intf->handlers->set_run_to_completion(intf->send_info, 1);
+ i_ipmi_request(NULL,
+ intf,
+ &addr,
+ 0,
+ &msg,
+ intf,
+ &smi_msg,
+ &recv_msg,
+ 0,
+ intf->channels[0].address,
+ intf->channels[0].lun,
+ 0, 1); /* Don't retry, and don't wait. */
+ }
+
+#ifdef CONFIG_IPMI_PANIC_STRING
+ /* On every interface, dump a bunch of OEM event holding the
+ string. */
+ if (!str)
+ return;
+
+ /* For every registered interface, send the event. */
+ list_for_each_entry_rcu(intf, &ipmi_interfaces, link) {
+ char *p = str;
+ struct ipmi_ipmb_addr *ipmb;
+ int j;
+
+ if (intf->intf_num == -1)
+ /* Interface was not ready yet. */
+ continue;
+
+ /* First job here is to figure out where to send the
+ OEM events. There's no way in IPMI to send OEM
+ events using an event send command, so we have to
+ find the SEL to put them in and stick them in
+ there. */
+
+ /* Get capabilities from the get device id. */
+ intf->local_sel_device = 0;
+ intf->local_event_generator = 0;
+ intf->event_receiver = 0;
+
+ /* Request the device info from the local MC. */
+ msg.netfn = IPMI_NETFN_APP_REQUEST;
+ msg.cmd = IPMI_GET_DEVICE_ID_CMD;
+ msg.data = NULL;
+ msg.data_len = 0;
+ intf->null_user_handler = device_id_fetcher;
+ i_ipmi_request(NULL,
+ intf,
+ &addr,
+ 0,
+ &msg,
+ intf,
+ &smi_msg,
+ &recv_msg,
+ 0,
+ intf->channels[0].address,
+ intf->channels[0].lun,
+ 0, 1); /* Don't retry, and don't wait. */
+
+ if (intf->local_event_generator) {
+ /* Request the event receiver from the local MC. */
+ msg.netfn = IPMI_NETFN_SENSOR_EVENT_REQUEST;
+ msg.cmd = IPMI_GET_EVENT_RECEIVER_CMD;
+ msg.data = NULL;
+ msg.data_len = 0;
+ intf->null_user_handler = event_receiver_fetcher;
+ i_ipmi_request(NULL,
+ intf,
+ &addr,
+ 0,
+ &msg,
+ intf,
+ &smi_msg,
+ &recv_msg,
+ 0,
+ intf->channels[0].address,
+ intf->channels[0].lun,
+ 0, 1); /* no retry, and no wait. */
+ }
+ intf->null_user_handler = NULL;
+
+ /* Validate the event receiver. The low bit must not
+ be 1 (it must be a valid IPMB address), it cannot
+ be zero, and it must not be my address. */
+ if (((intf->event_receiver & 1) == 0)
+ && (intf->event_receiver != 0)
+ && (intf->event_receiver != intf->channels[0].address))
+ {
+ /* The event receiver is valid, send an IPMB
+ message. */
+ ipmb = (struct ipmi_ipmb_addr *) &addr;
+ ipmb->addr_type = IPMI_IPMB_ADDR_TYPE;
+ ipmb->channel = 0; /* FIXME - is this right? */
+ ipmb->lun = intf->event_receiver_lun;
+ ipmb->slave_addr = intf->event_receiver;
+ } else if (intf->local_sel_device) {
+ /* The event receiver was not valid (or was
+ me), but I am an SEL device, just dump it
+ in my SEL. */
+ si = (struct ipmi_system_interface_addr *) &addr;
+ si->addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE;
+ si->channel = IPMI_BMC_CHANNEL;
+ si->lun = 0;
+ } else
+ continue; /* No where to send the event. */
+
+
+ msg.netfn = IPMI_NETFN_STORAGE_REQUEST; /* Storage. */
+ msg.cmd = IPMI_ADD_SEL_ENTRY_CMD;
+ msg.data = data;
+ msg.data_len = 16;
+
+ j = 0;
+ while (*p) {
+ int size = strlen(p);
+
+ if (size > 11)
+ size = 11;
+ data[0] = 0;
+ data[1] = 0;
+ data[2] = 0xf0; /* OEM event without timestamp. */
+ data[3] = intf->channels[0].address;
+ data[4] = j++; /* sequence # */
+ /* Always give 11 bytes, so strncpy will fill
+ it with zeroes for me. */
+ strncpy(data+5, p, 11);
+ p += size;
+
+ i_ipmi_request(NULL,
+ intf,
+ &addr,
+ 0,
+ &msg,
+ intf,
+ &smi_msg,
+ &recv_msg,
+ 0,
+ intf->channels[0].address,
+ intf->channels[0].lun,
+ 0, 1); /* no retry, and no wait. */
+ }
+ }
+#endif /* CONFIG_IPMI_PANIC_STRING */
+}
+#endif /* CONFIG_IPMI_PANIC_EVENT */
+
+static int has_panicked;
+
+static int panic_event(struct notifier_block *this,
+ unsigned long event,
+ void *ptr)
+{
+ ipmi_smi_t intf;
+
+ if (has_panicked)
+ return NOTIFY_DONE;
+ has_panicked = 1;
+
+ /* For every registered interface, set it to run to completion. */
+ list_for_each_entry_rcu(intf, &ipmi_interfaces, link) {
+ if (!intf->handlers)
+ /* Interface is not ready. */
+ continue;
+
+ intf->handlers->set_run_to_completion(intf->send_info, 1);
+ }
+
+#ifdef CONFIG_IPMI_PANIC_EVENT
+ send_panic_events(ptr);
+#endif
+
+ return NOTIFY_DONE;
+}
+
+static struct notifier_block panic_block = {
+ .notifier_call = panic_event,
+ .next = NULL,
+ .priority = 200 /* priority: INT_MAX >= x >= 0 */
+};
+
+static int ipmi_init_msghandler(void)
+{
+ int rv;
+
+ if (initialized)
+ return 0;
+
+ rv = driver_register(&ipmidriver);
+ if (rv) {
+ printk(KERN_ERR PFX "Could not register IPMI driver\n");
+ return rv;
+ }
+
+ printk(KERN_INFO "ipmi message handler version "
+ IPMI_DRIVER_VERSION "\n");
+
+#ifdef CONFIG_PROC_FS
+ proc_ipmi_root = proc_mkdir("ipmi", NULL);
+ if (!proc_ipmi_root) {
+ printk(KERN_ERR PFX "Unable to create IPMI proc dir");
+ return -ENOMEM;
+ }
+
+ proc_ipmi_root->owner = THIS_MODULE;
+#endif /* CONFIG_PROC_FS */
+
+ setup_timer(&ipmi_timer, ipmi_timeout, 0);
+ mod_timer(&ipmi_timer, jiffies + IPMI_TIMEOUT_JIFFIES);
+
+ atomic_notifier_chain_register(&panic_notifier_list, &panic_block);
+
+ initialized = 1;
+
+ return 0;
+}
+
+static __init int ipmi_init_msghandler_mod(void)
+{
+ ipmi_init_msghandler();
+ return 0;
+}
+
+static __exit void cleanup_ipmi(void)
+{
+ int count;
+
+ if (!initialized)
+ return;
+
+ atomic_notifier_chain_unregister(&panic_notifier_list, &panic_block);
+
+ /* This can't be called if any interfaces exist, so no worry about
+ shutting down the interfaces. */
+
+ /* Tell the timer to stop, then wait for it to stop. This avoids
+ problems with race conditions removing the timer here. */
+ atomic_inc(&stop_operation);
+ del_timer_sync(&ipmi_timer);
+
+#ifdef CONFIG_PROC_FS
+ remove_proc_entry(proc_ipmi_root->name, &proc_root);
+#endif /* CONFIG_PROC_FS */
+
+ driver_unregister(&ipmidriver);
+
+ initialized = 0;
+
+ /* Check for buffer leaks. */
+ count = atomic_read(&smi_msg_inuse_count);
+ if (count != 0)
+ printk(KERN_WARNING PFX "SMI message count %d at exit\n",
+ count);
+ count = atomic_read(&recv_msg_inuse_count);
+ if (count != 0)
+ printk(KERN_WARNING PFX "recv message count %d at exit\n",
+ count);
+}
+module_exit(cleanup_ipmi);
+
+module_init(ipmi_init_msghandler_mod);
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Corey Minyard <minyard@mvista.com>");
+MODULE_DESCRIPTION("Incoming and outgoing message routing for an IPMI interface.");
+MODULE_VERSION(IPMI_DRIVER_VERSION);
+
+EXPORT_SYMBOL(ipmi_create_user);
+EXPORT_SYMBOL(ipmi_destroy_user);
+EXPORT_SYMBOL(ipmi_get_version);
+EXPORT_SYMBOL(ipmi_request_settime);
+EXPORT_SYMBOL(ipmi_request_supply_msgs);
+EXPORT_SYMBOL(ipmi_register_smi);
+EXPORT_SYMBOL(ipmi_unregister_smi);
+EXPORT_SYMBOL(ipmi_register_for_cmd);
+EXPORT_SYMBOL(ipmi_unregister_for_cmd);
+EXPORT_SYMBOL(ipmi_smi_msg_received);
+EXPORT_SYMBOL(ipmi_smi_watchdog_pretimeout);
+EXPORT_SYMBOL(ipmi_alloc_smi_msg);
+EXPORT_SYMBOL(ipmi_addr_length);
+EXPORT_SYMBOL(ipmi_validate_addr);
+EXPORT_SYMBOL(ipmi_set_gets_events);
+EXPORT_SYMBOL(ipmi_smi_watcher_register);
+EXPORT_SYMBOL(ipmi_smi_watcher_unregister);
+EXPORT_SYMBOL(ipmi_set_my_address);
+EXPORT_SYMBOL(ipmi_get_my_address);
+EXPORT_SYMBOL(ipmi_set_my_LUN);
+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);
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
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