diff options
Diffstat (limited to 'toolchain/kernel-headers/linux-2.6.20.4-ipmisensors-20070314-1214.patch')
| -rw-r--r-- | toolchain/kernel-headers/linux-2.6.20.4-ipmisensors-20070314-1214.patch | 6103 |
1 files changed, 6103 insertions, 0 deletions
diff --git a/toolchain/kernel-headers/linux-2.6.20.4-ipmisensors-20070314-1214.patch b/toolchain/kernel-headers/linux-2.6.20.4-ipmisensors-20070314-1214.patch new file mode 100644 index 000000000..506fcb4c7 --- /dev/null +++ b/toolchain/kernel-headers/linux-2.6.20.4-ipmisensors-20070314-1214.patch @@ -0,0 +1,6103 @@ +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 |