* and drives the real SMI state machine.
*/
-#include <linux/config.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <asm/system.h>
#include <linux/list.h>
#include <linux/pci.h>
#include <linux/ioport.h>
-#include <linux/irq.h>
-#ifdef CONFIG_HIGH_RES_TIMERS
-#include <linux/hrtime.h>
-# if defined(schedule_next_int)
-/* Old high-res timer code, do translations. */
-# define get_arch_cycles(a) quick_update_jiffies_sub(a)
-# define arch_cycles_per_jiffy cycles_per_jiffies
-# endif
-static inline void add_usec_to_timer(struct timer_list *t, long v)
-{
- t->sub_expires += nsec_to_arch_cycle(v * 1000);
- while (t->sub_expires >= arch_cycles_per_jiffy)
- {
- t->expires++;
- t->sub_expires -= arch_cycles_per_jiffy;
- }
-}
-#endif
+#include <linux/notifier.h>
+#include <linux/mutex.h>
+#include <linux/kthread.h>
+#include <asm/irq.h>
#include <linux/interrupt.h>
#include <linux/rcupdate.h>
#include <linux/ipmi_smi.h>
#include <asm/io.h>
#include "ipmi_si_sm.h"
#include <linux/init.h>
+#include <linux/dmi.h>
+#include <linux/string.h>
+#include <linux/ctype.h>
-#define IPMI_SI_VERSION "v31"
+#define PFX "ipmi_si: "
/* Measure times between events in the driver. */
#undef DEBUG_TIMING
/* FIXME - add watchdog stuff. */
};
+/* Some BT-specific defines we need here. */
+#define IPMI_BT_INTMASK_REG 2
+#define IPMI_BT_INTMASK_CLEAR_IRQ_BIT 2
+#define IPMI_BT_INTMASK_ENABLE_IRQ_BIT 1
+
enum si_type {
SI_KCS, SI_SMIC, SI_BT
};
+static char *si_to_str[] = { "kcs", "smic", "bt" };
+
+#define DEVICE_NAME "ipmi_si"
+
+static struct device_driver ipmi_driver =
+{
+ .name = DEVICE_NAME,
+ .bus = &platform_bus_type
+};
struct smi_info
{
+ int intf_num;
ipmi_smi_t intf;
struct si_sm_data *si_sm;
struct si_sm_handlers *handlers;
int (*irq_setup)(struct smi_info *info);
void (*irq_cleanup)(struct smi_info *info);
unsigned int io_size;
+ char *addr_source; /* ACPI, PCI, SMBIOS, hardcode, default. */
+ void (*addr_source_cleanup)(struct smi_info *info);
+ void *addr_source_data;
+
+ /* Per-OEM handler, called from handle_flags().
+ Returns 1 when handle_flags() needs to be re-run
+ or 0 indicating it set si_state itself.
+ */
+ int (*oem_data_avail_handler)(struct smi_info *smi_info);
/* Flags from the last GET_MSG_FLAGS command, used when an ATTN
is set to hold the flags until we are done handling everything
#define RECEIVE_MSG_AVAIL 0x01
#define EVENT_MSG_BUFFER_FULL 0x02
#define WDT_PRE_TIMEOUT_INT 0x08
+#define OEM0_DATA_AVAIL 0x20
+#define OEM1_DATA_AVAIL 0x40
+#define OEM2_DATA_AVAIL 0x80
+#define OEM_DATA_AVAIL (OEM0_DATA_AVAIL | \
+ OEM1_DATA_AVAIL | \
+ OEM2_DATA_AVAIL)
unsigned char msg_flags;
/* If set to true, this will request events the next time the
/* The I/O port of an SI interface. */
int port;
+ /* The space between start addresses of the two ports. For
+ instance, if the first port is 0xca2 and the spacing is 4, then
+ the second port is 0xca6. */
+ unsigned int spacing;
+
/* zero if no irq; */
int irq;
unsigned long last_timeout_jiffies;
/* Used to gracefully stop the timer without race conditions. */
- volatile int stop_operation;
- volatile int timer_stopped;
+ atomic_t stop_operation;
/* The driver will disable interrupts when it gets into a
situation where it cannot handle messages due to lack of
interrupts. */
int interrupt_disabled;
- unsigned char ipmi_si_dev_rev;
- unsigned char ipmi_si_fw_rev_major;
- unsigned char ipmi_si_fw_rev_minor;
- unsigned char ipmi_version_major;
- unsigned char ipmi_version_minor;
+ /* From the get device id response... */
+ struct ipmi_device_id device_id;
+
+ /* Driver model stuff. */
+ struct device *dev;
+ struct platform_device *pdev;
+
+ /* True if we allocated the device, false if it came from
+ * someplace else (like PCI). */
+ int dev_registered;
+
+ /* Slave address, could be reported from DMI. */
+ unsigned char slave_addr;
/* Counters and things for the proc filesystem. */
spinlock_t count_lock;
unsigned long events;
unsigned long watchdog_pretimeouts;
unsigned long incoming_messages;
+
+ struct task_struct *thread;
+
+ struct list_head link;
};
-static void si_restart_short_timer(struct smi_info *smi_info);
+#define SI_MAX_PARMS 4
+
+static int force_kipmid[SI_MAX_PARMS];
+static int num_force_kipmid;
+
+static int unload_when_empty = 1;
+
+static int try_smi_init(struct smi_info *smi);
+static void cleanup_one_si(struct smi_info *to_clean);
+
+static ATOMIC_NOTIFIER_HEAD(xaction_notifier_list);
+static int register_xaction_notifier(struct notifier_block * nb)
+{
+ return atomic_notifier_chain_register(&xaction_notifier_list, nb);
+}
static void deliver_recv_msg(struct smi_info *smi_info,
struct ipmi_smi_msg *msg)
spin_lock(&(smi_info->si_lock));
}
-static void return_hosed_msg(struct smi_info *smi_info)
+static void return_hosed_msg(struct smi_info *smi_info, int cCode)
{
struct ipmi_smi_msg *msg = smi_info->curr_msg;
+ if (cCode < 0 || cCode > IPMI_ERR_UNSPECIFIED)
+ cCode = IPMI_ERR_UNSPECIFIED;
+ /* else use it as is */
+
/* Make it a reponse */
msg->rsp[0] = msg->data[0] | 4;
msg->rsp[1] = msg->data[1];
- msg->rsp[2] = 0xFF; /* Unknown error. */
+ msg->rsp[2] = cCode;
msg->rsp_size = 3;
smi_info->curr_msg = NULL;
spin_lock(&(smi_info->msg_lock));
/* Pick the high priority queue first. */
- if (! list_empty(&(smi_info->hp_xmit_msgs))) {
+ if (!list_empty(&(smi_info->hp_xmit_msgs))) {
entry = smi_info->hp_xmit_msgs.next;
- } else if (! list_empty(&(smi_info->xmit_msgs))) {
+ } else if (!list_empty(&(smi_info->xmit_msgs))) {
entry = smi_info->xmit_msgs.next;
}
do_gettimeofday(&t);
printk("**Start2: %d.%9.9d\n", t.tv_sec, t.tv_usec);
#endif
+ err = atomic_notifier_call_chain(&xaction_notifier_list,
+ 0, smi_info);
+ if (err & NOTIFY_STOP_MASK) {
+ rv = SI_SM_CALL_WITHOUT_DELAY;
+ goto out;
+ }
err = smi_info->handlers->start_transaction(
smi_info->si_sm,
smi_info->curr_msg->data,
smi_info->curr_msg->data_size);
if (err) {
- return_hosed_msg(smi_info);
+ return_hosed_msg(smi_info, err);
}
rv = SI_SM_CALL_WITHOUT_DELAY;
}
+ out:
spin_unlock(&(smi_info->msg_lock));
return rv;
static void handle_flags(struct smi_info *smi_info)
{
+ retry:
if (smi_info->msg_flags & WDT_PRE_TIMEOUT_INT) {
/* Watchdog pre-timeout */
spin_lock(&smi_info->count_lock);
smi_info->curr_msg->data,
smi_info->curr_msg->data_size);
smi_info->si_state = SI_GETTING_EVENTS;
+ } else if (smi_info->msg_flags & OEM_DATA_AVAIL &&
+ smi_info->oem_data_avail_handler) {
+ if (smi_info->oem_data_avail_handler(smi_info))
+ goto retry;
} else {
smi_info->si_state = SI_NORMAL;
}
/* Error fetching flags, just give up for
now. */
smi_info->si_state = SI_NORMAL;
- } else if (len < 3) {
+ } else if (len < 4) {
/* Hmm, no flags. That's technically illegal, but
don't use uninitialized data. */
smi_info->si_state = SI_NORMAL;
/* Take off the event flag. */
smi_info->msg_flags &= ~EVENT_MSG_BUFFER_FULL;
+ handle_flags(smi_info);
} else {
spin_lock(&smi_info->count_lock);
smi_info->events++;
spin_unlock(&smi_info->count_lock);
+ /* Do this before we deliver the message
+ because delivering the message releases the
+ lock and something else can mess with the
+ state. */
+ handle_flags(smi_info);
+
deliver_recv_msg(smi_info, msg);
}
- handle_flags(smi_info);
break;
}
/* Take off the msg flag. */
smi_info->msg_flags &= ~RECEIVE_MSG_AVAIL;
+ handle_flags(smi_info);
} else {
spin_lock(&smi_info->count_lock);
smi_info->incoming_messages++;
spin_unlock(&smi_info->count_lock);
+ /* Do this before we deliver the message
+ because delivering the message releases the
+ lock and something else can mess with the
+ state. */
+ handle_flags(smi_info);
+
deliver_recv_msg(smi_info, msg);
}
- handle_flags(smi_info);
break;
}
smi_info->hosed_count++;
spin_unlock(&smi_info->count_lock);
+ /* Do the before return_hosed_msg, because that
+ releases the lock. */
+ smi_info->si_state = SI_NORMAL;
if (smi_info->curr_msg != NULL) {
/* If we were handling a user message, format
a response to send to the upper layer to
tell it about the error. */
- return_hosed_msg(smi_info);
+ return_hosed_msg(smi_info, IPMI_ERR_UNSPECIFIED);
}
si_sm_result = smi_info->handlers->event(smi_info->si_sm, 0);
- smi_info->si_state = SI_NORMAL;
}
/* We prefer handling attn over new messages. */
{
/* We are idle and the upper layer requested that I fetch
events, so do so. */
- unsigned char msg[2];
+ atomic_set(&smi_info->req_events, 0);
- spin_lock(&smi_info->count_lock);
- smi_info->flag_fetches++;
- spin_unlock(&smi_info->count_lock);
+ smi_info->curr_msg = ipmi_alloc_smi_msg();
+ if (!smi_info->curr_msg)
+ goto out;
- atomic_set(&smi_info->req_events, 0);
- msg[0] = (IPMI_NETFN_APP_REQUEST << 2);
- msg[1] = IPMI_GET_MSG_FLAGS_CMD;
+ smi_info->curr_msg->data[0] = (IPMI_NETFN_APP_REQUEST << 2);
+ smi_info->curr_msg->data[1] = IPMI_READ_EVENT_MSG_BUFFER_CMD;
+ smi_info->curr_msg->data_size = 2;
smi_info->handlers->start_transaction(
- smi_info->si_sm, msg, 2);
- smi_info->si_state = SI_GETTING_FLAGS;
+ smi_info->si_sm,
+ smi_info->curr_msg->data,
+ smi_info->curr_msg->data_size);
+ smi_info->si_state = SI_GETTING_EVENTS;
goto restart;
}
-
+ out:
return si_sm_result;
}
struct timeval t;
#endif
+ if (atomic_read(&smi_info->stop_operation)) {
+ msg->rsp[0] = msg->data[0] | 4;
+ msg->rsp[1] = msg->data[1];
+ msg->rsp[2] = IPMI_ERR_UNSPECIFIED;
+ msg->rsp_size = 3;
+ deliver_recv_msg(smi_info, msg);
+ return;
+ }
+
spin_lock_irqsave(&(smi_info->msg_lock), flags);
#ifdef DEBUG_TIMING
do_gettimeofday(&t);
&& (smi_info->curr_msg == NULL))
{
start_next_msg(smi_info);
- si_restart_short_timer(smi_info);
}
spin_unlock_irqrestore(&(smi_info->si_lock), flags);
}
spin_unlock_irqrestore(&(smi_info->si_lock), flags);
}
-static void request_events(void *send_info)
+static int ipmi_thread(void *data)
{
- struct smi_info *smi_info = send_info;
+ struct smi_info *smi_info = data;
+ unsigned long flags;
+ enum si_sm_result smi_result;
- atomic_set(&smi_info->req_events, 1);
+ set_user_nice(current, 19);
+ while (!kthread_should_stop()) {
+ spin_lock_irqsave(&(smi_info->si_lock), flags);
+ smi_result = smi_event_handler(smi_info, 0);
+ spin_unlock_irqrestore(&(smi_info->si_lock), flags);
+ if (smi_result == SI_SM_CALL_WITHOUT_DELAY) {
+ /* do nothing */
+ }
+ else if (smi_result == SI_SM_CALL_WITH_DELAY)
+ schedule();
+ else
+ schedule_timeout_interruptible(1);
+ }
+ return 0;
}
-static int initialized = 0;
-/* Must be called with interrupts off and with the si_lock held. */
-static void si_restart_short_timer(struct smi_info *smi_info)
+static void poll(void *send_info)
{
-#if defined(CONFIG_HIGH_RES_TIMERS)
- unsigned long flags;
- unsigned long jiffies_now;
+ struct smi_info *smi_info = send_info;
- if (del_timer(&(smi_info->si_timer))) {
- /* If we don't delete the timer, then it will go off
- immediately, anyway. So we only process if we
- actually delete the timer. */
+ /*
+ * Make sure there is some delay in the poll loop so we can
+ * drive time forward and timeout things.
+ */
+ udelay(10);
+ smi_event_handler(smi_info, 10);
+}
- /* We already have irqsave on, so no need for it
- here. */
- read_lock(&xtime_lock);
- jiffies_now = jiffies;
- smi_info->si_timer.expires = jiffies_now;
- smi_info->si_timer.sub_expires = get_arch_cycles(jiffies_now);
+static void request_events(void *send_info)
+{
+ struct smi_info *smi_info = send_info;
- add_usec_to_timer(&smi_info->si_timer, SI_SHORT_TIMEOUT_USEC);
+ if (atomic_read(&smi_info->stop_operation))
+ return;
- add_timer(&(smi_info->si_timer));
- spin_lock_irqsave(&smi_info->count_lock, flags);
- smi_info->timeout_restarts++;
- spin_unlock_irqrestore(&smi_info->count_lock, flags);
- }
-#endif
+ atomic_set(&smi_info->req_events, 1);
}
+static int initialized;
+
static void smi_timeout(unsigned long data)
{
struct smi_info *smi_info = (struct smi_info *) data;
enum si_sm_result smi_result;
unsigned long flags;
unsigned long jiffies_now;
- unsigned long time_diff;
+ long time_diff;
#ifdef DEBUG_TIMING
struct timeval t;
#endif
- if (smi_info->stop_operation) {
- smi_info->timer_stopped = 1;
+ if (atomic_read(&smi_info->stop_operation))
return;
- }
spin_lock_irqsave(&(smi_info->si_lock), flags);
#ifdef DEBUG_TIMING
printk("**Timer: %d.%9.9d\n", t.tv_sec, t.tv_usec);
#endif
jiffies_now = jiffies;
- time_diff = ((jiffies_now - smi_info->last_timeout_jiffies)
+ time_diff = (((long)jiffies_now - (long)smi_info->last_timeout_jiffies)
* SI_USEC_PER_JIFFY);
smi_result = smi_event_handler(smi_info, time_diff);
smi_info->last_timeout_jiffies = jiffies_now;
- if ((smi_info->irq) && (! smi_info->interrupt_disabled)) {
+ if ((smi_info->irq) && (!smi_info->interrupt_disabled)) {
/* Running with interrupts, only do long timeouts. */
smi_info->si_timer.expires = jiffies + SI_TIMEOUT_JIFFIES;
spin_lock_irqsave(&smi_info->count_lock, flags);
spin_lock_irqsave(&smi_info->count_lock, flags);
smi_info->short_timeouts++;
spin_unlock_irqrestore(&smi_info->count_lock, flags);
-#if defined(CONFIG_HIGH_RES_TIMERS)
- read_lock(&xtime_lock);
- smi_info->si_timer.expires = jiffies;
- smi_info->si_timer.sub_expires
- = get_arch_cycles(smi_info->si_timer.expires);
- read_unlock(&xtime_lock);
- add_usec_to_timer(&smi_info->si_timer, SI_SHORT_TIMEOUT_USEC);
-#else
smi_info->si_timer.expires = jiffies + 1;
-#endif
} else {
spin_lock_irqsave(&smi_info->count_lock, flags);
smi_info->long_timeouts++;
spin_unlock_irqrestore(&smi_info->count_lock, flags);
smi_info->si_timer.expires = jiffies + SI_TIMEOUT_JIFFIES;
-#if defined(CONFIG_HIGH_RES_TIMERS)
- smi_info->si_timer.sub_expires = 0;
-#endif
}
do_add_timer:
add_timer(&(smi_info->si_timer));
}
-static irqreturn_t si_irq_handler(int irq, void *data, struct pt_regs *regs)
+static irqreturn_t si_irq_handler(int irq, void *data)
{
struct smi_info *smi_info = data;
unsigned long flags;
smi_info->interrupts++;
spin_unlock(&smi_info->count_lock);
- if (smi_info->stop_operation)
+ if (atomic_read(&smi_info->stop_operation))
goto out;
#ifdef DEBUG_TIMING
return IRQ_HANDLED;
}
+static irqreturn_t si_bt_irq_handler(int irq, void *data)
+{
+ struct smi_info *smi_info = data;
+ /* We need to clear the IRQ flag for the BT interface. */
+ smi_info->io.outputb(&smi_info->io, IPMI_BT_INTMASK_REG,
+ IPMI_BT_INTMASK_CLEAR_IRQ_BIT
+ | IPMI_BT_INTMASK_ENABLE_IRQ_BIT);
+ return si_irq_handler(irq, data);
+}
+
+static int smi_start_processing(void *send_info,
+ ipmi_smi_t intf)
+{
+ struct smi_info *new_smi = send_info;
+ int enable = 0;
+
+ new_smi->intf = intf;
+
+ /* Set up the timer that drives the interface. */
+ setup_timer(&new_smi->si_timer, smi_timeout, (long)new_smi);
+ new_smi->last_timeout_jiffies = jiffies;
+ mod_timer(&new_smi->si_timer, jiffies + SI_TIMEOUT_JIFFIES);
+
+ /*
+ * Check if the user forcefully enabled the daemon.
+ */
+ if (new_smi->intf_num < num_force_kipmid)
+ enable = force_kipmid[new_smi->intf_num];
+ /*
+ * The BT interface is efficient enough to not need a thread,
+ * and there is no need for a thread if we have interrupts.
+ */
+ else if ((new_smi->si_type != SI_BT) && (!new_smi->irq))
+ enable = 1;
+
+ if (enable) {
+ new_smi->thread = kthread_run(ipmi_thread, new_smi,
+ "kipmi%d", new_smi->intf_num);
+ if (IS_ERR(new_smi->thread)) {
+ printk(KERN_NOTICE "ipmi_si_intf: Could not start"
+ " kernel thread due to error %ld, only using"
+ " timers to drive the interface\n",
+ PTR_ERR(new_smi->thread));
+ new_smi->thread = NULL;
+ }
+ }
+
+ return 0;
+}
+
+static void set_maintenance_mode(void *send_info, int enable)
+{
+ struct smi_info *smi_info = send_info;
+
+ if (!enable)
+ atomic_set(&smi_info->req_events, 0);
+}
+
static struct ipmi_smi_handlers handlers =
{
.owner = THIS_MODULE,
+ .start_processing = smi_start_processing,
.sender = sender,
.request_events = request_events,
- .set_run_to_completion = set_run_to_completion
+ .set_maintenance_mode = set_maintenance_mode,
+ .set_run_to_completion = set_run_to_completion,
+ .poll = poll,
};
/* There can be 4 IO ports passed in (with or without IRQs), 4 addresses,
a default IO port, and 1 ACPI/SPMI address. That sets SI_MAX_DRIVERS */
-#define SI_MAX_PARMS 4
-#define SI_MAX_DRIVERS ((SI_MAX_PARMS * 2) + 2)
-static struct smi_info *smi_infos[SI_MAX_DRIVERS] =
-{ NULL, NULL, NULL, NULL };
-
-#define DEVICE_NAME "ipmi_si"
+static LIST_HEAD(smi_infos);
+static DEFINE_MUTEX(smi_infos_lock);
+static int smi_num; /* Used to sequence the SMIs */
-#define DEFAULT_KCS_IO_PORT 0xca2
-#define DEFAULT_SMIC_IO_PORT 0xca9
-#define DEFAULT_BT_IO_PORT 0xe4
+#define DEFAULT_REGSPACING 1
static int si_trydefaults = 1;
-static char *si_type[SI_MAX_PARMS] = { NULL, NULL, NULL, NULL };
+static char *si_type[SI_MAX_PARMS];
#define MAX_SI_TYPE_STR 30
static char si_type_str[MAX_SI_TYPE_STR];
-static unsigned long addrs[SI_MAX_PARMS] = { 0, 0, 0, 0 };
-static int num_addrs = 0;
-static unsigned int ports[SI_MAX_PARMS] = { 0, 0, 0, 0 };
-static int num_ports = 0;
-static int irqs[SI_MAX_PARMS] = { 0, 0, 0, 0 };
-static int num_irqs = 0;
+static unsigned long addrs[SI_MAX_PARMS];
+static int num_addrs;
+static unsigned int ports[SI_MAX_PARMS];
+static int num_ports;
+static int irqs[SI_MAX_PARMS];
+static int num_irqs;
+static int regspacings[SI_MAX_PARMS];
+static int num_regspacings;
+static int regsizes[SI_MAX_PARMS];
+static int num_regsizes;
+static int regshifts[SI_MAX_PARMS];
+static int num_regshifts;
+static int slave_addrs[SI_MAX_PARMS];
+static int num_slave_addrs;
+
+#define IPMI_IO_ADDR_SPACE 0
+#define IPMI_MEM_ADDR_SPACE 1
+static char *addr_space_to_str[] = { "i/o", "mem" };
+static int hotmod_handler(const char *val, struct kernel_param *kp);
+
+module_param_call(hotmod, hotmod_handler, NULL, NULL, 0200);
+MODULE_PARM_DESC(hotmod, "Add and remove interfaces. See"
+ " Documentation/IPMI.txt in the kernel sources for the"
+ " gory details.");
module_param_named(trydefaults, si_trydefaults, bool, 0);
MODULE_PARM_DESC(trydefaults, "Setting this to 'false' will disable the"
" interface separated by commas. The types are 'kcs',"
" 'smic', and 'bt'. For example si_type=kcs,bt will set"
" the first interface to kcs and the second to bt");
-module_param_array(addrs, long, num_addrs, 0);
+module_param_array(addrs, long, &num_addrs, 0);
MODULE_PARM_DESC(addrs, "Sets the memory address of each interface, the"
" addresses separated by commas. Only use if an interface"
" is in memory. Otherwise, set it to zero or leave"
" it blank.");
-module_param_array(ports, int, num_ports, 0);
+module_param_array(ports, int, &num_ports, 0);
MODULE_PARM_DESC(ports, "Sets the port address of each interface, the"
" addresses separated by commas. Only use if an interface"
" is a port. Otherwise, set it to zero or leave"
" it blank.");
-module_param_array(irqs, int, num_irqs, 0);
+module_param_array(irqs, int, &num_irqs, 0);
MODULE_PARM_DESC(irqs, "Sets the interrupt of each interface, the"
" addresses separated by commas. Only use if an interface"
" has an interrupt. Otherwise, set it to zero or leave"
" it blank.");
+module_param_array(regspacings, int, &num_regspacings, 0);
+MODULE_PARM_DESC(regspacings, "The number of bytes between the start address"
+ " and each successive register used by the interface. For"
+ " instance, if the start address is 0xca2 and the spacing"
+ " is 2, then the second address is at 0xca4. Defaults"
+ " to 1.");
+module_param_array(regsizes, int, &num_regsizes, 0);
+MODULE_PARM_DESC(regsizes, "The size of the specific IPMI register in bytes."
+ " This should generally be 1, 2, 4, or 8 for an 8-bit,"
+ " 16-bit, 32-bit, or 64-bit register. Use this if you"
+ " the 8-bit IPMI register has to be read from a larger"
+ " register.");
+module_param_array(regshifts, int, &num_regshifts, 0);
+MODULE_PARM_DESC(regshifts, "The amount to shift the data read from the."
+ " IPMI register, in bits. For instance, if the data"
+ " is read from a 32-bit word and the IPMI data is in"
+ " bit 8-15, then the shift would be 8");
+module_param_array(slave_addrs, int, &num_slave_addrs, 0);
+MODULE_PARM_DESC(slave_addrs, "Set the default IPMB slave address for"
+ " the controller. Normally this is 0x20, but can be"
+ " overridden by this parm. This is an array indexed"
+ " by interface number.");
+module_param_array(force_kipmid, int, &num_force_kipmid, 0);
+MODULE_PARM_DESC(force_kipmid, "Force the kipmi daemon to be enabled (1) or"
+ " disabled(0). Normally the IPMI driver auto-detects"
+ " this, but the value may be overridden by this parm.");
+module_param(unload_when_empty, int, 0);
+MODULE_PARM_DESC(unload_when_empty, "Unload the module if no interfaces are"
+ " specified or found, default is 1. Setting to 0"
+ " is useful for hot add of devices using hotmod.");
-#if defined(CONFIG_ACPI_INTERPETER) || defined(CONFIG_X86) || defined(CONFIG_PCI)
-#define IPMI_MEM_ADDR_SPACE 1
-#define IPMI_IO_ADDR_SPACE 2
-static int is_new_interface(int intf, u8 addr_space, unsigned long base_addr)
+static void std_irq_cleanup(struct smi_info *info)
{
- int i;
-
- for (i = 0; i < SI_MAX_PARMS; ++i) {
- /* Don't check our address. */
- if (i == intf)
- continue;
- if (si_type[i] != NULL) {
- if ((addr_space == IPMI_MEM_ADDR_SPACE &&
- base_addr == addrs[i]) ||
- (addr_space == IPMI_IO_ADDR_SPACE &&
- base_addr == ports[i]))
- return 0;
- }
- else
- break;
- }
-
- return 1;
+ if (info->si_type == SI_BT)
+ /* Disable the interrupt in the BT interface. */
+ info->io.outputb(&info->io, IPMI_BT_INTMASK_REG, 0);
+ free_irq(info->irq, info);
}
-#endif
static int std_irq_setup(struct smi_info *info)
{
if (!info->irq)
return 0;
- rv = request_irq(info->irq,
- si_irq_handler,
- SA_INTERRUPT,
- DEVICE_NAME,
- info);
+ if (info->si_type == SI_BT) {
+ rv = request_irq(info->irq,
+ si_bt_irq_handler,
+ IRQF_DISABLED,
+ DEVICE_NAME,
+ info);
+ if (!rv)
+ /* Enable the interrupt in the BT interface. */
+ info->io.outputb(&info->io, IPMI_BT_INTMASK_REG,
+ IPMI_BT_INTMASK_ENABLE_IRQ_BIT);
+ } else
+ rv = request_irq(info->irq,
+ si_irq_handler,
+ IRQF_DISABLED,
+ DEVICE_NAME,
+ info);
if (rv) {
printk(KERN_WARNING
"ipmi_si: %s unable to claim interrupt %d,"
DEVICE_NAME, info->irq);
info->irq = 0;
} else {
+ info->irq_cleanup = std_irq_cleanup;
printk(" Using irq %d\n", info->irq);
}
return rv;
}
-static void std_irq_cleanup(struct smi_info *info)
+static unsigned char port_inb(struct si_sm_io *io, unsigned int offset)
{
- if (!info->irq)
- return;
+ unsigned int addr = io->addr_data;
- free_irq(info->irq, info);
+ return inb(addr + (offset * io->regspacing));
}
-static unsigned char port_inb(struct si_sm_io *io, unsigned int offset)
+static void port_outb(struct si_sm_io *io, unsigned int offset,
+ unsigned char b)
{
- unsigned int *addr = io->info;
+ unsigned int addr = io->addr_data;
- return inb((*addr)+offset);
+ outb(b, addr + (offset * io->regspacing));
}
-static void port_outb(struct si_sm_io *io, unsigned int offset,
+static unsigned char port_inw(struct si_sm_io *io, unsigned int offset)
+{
+ unsigned int addr = io->addr_data;
+
+ return (inw(addr + (offset * io->regspacing)) >> io->regshift) & 0xff;
+}
+
+static void port_outw(struct si_sm_io *io, unsigned int offset,
unsigned char b)
{
- unsigned int *addr = io->info;
+ unsigned int addr = io->addr_data;
- outb(b, (*addr)+offset);
+ outw(b << io->regshift, addr + (offset * io->regspacing));
}
-static int port_setup(struct smi_info *info)
+static unsigned char port_inl(struct si_sm_io *io, unsigned int offset)
{
- unsigned int *addr = info->io.info;
+ unsigned int addr = io->addr_data;
- if (!addr || (!*addr))
- return -ENODEV;
+ return (inl(addr + (offset * io->regspacing)) >> io->regshift) & 0xff;
+}
- if (request_region(*addr, info->io_size, DEVICE_NAME) == NULL)
- return -EIO;
- return 0;
+static void port_outl(struct si_sm_io *io, unsigned int offset,
+ unsigned char b)
+{
+ unsigned int addr = io->addr_data;
+
+ outl(b << io->regshift, addr+(offset * io->regspacing));
}
static void port_cleanup(struct smi_info *info)
{
- unsigned int *addr = info->io.info;
+ unsigned int addr = info->io.addr_data;
+ int idx;
- if (addr && (*addr))
- release_region (*addr, info->io_size);
- kfree(info);
+ if (addr) {
+ for (idx = 0; idx < info->io_size; idx++) {
+ release_region(addr + idx * info->io.regspacing,
+ info->io.regsize);
+ }
+ }
}
-static int try_init_port(int intf_num, struct smi_info **new_info)
+static int port_setup(struct smi_info *info)
{
- struct smi_info *info;
+ unsigned int addr = info->io.addr_data;
+ int idx;
- if (!ports[intf_num])
+ if (!addr)
return -ENODEV;
- if (!is_new_interface(intf_num, IPMI_IO_ADDR_SPACE,
- ports[intf_num]))
- return -ENODEV;
+ info->io_cleanup = port_cleanup;
- info = kmalloc(sizeof(*info), GFP_KERNEL);
- if (!info) {
- printk(KERN_ERR "ipmi_si: Could not allocate SI data (1)\n");
- return -ENOMEM;
+ /* Figure out the actual inb/inw/inl/etc routine to use based
+ upon the register size. */
+ switch (info->io.regsize) {
+ case 1:
+ info->io.inputb = port_inb;
+ info->io.outputb = port_outb;
+ break;
+ case 2:
+ info->io.inputb = port_inw;
+ info->io.outputb = port_outw;
+ break;
+ case 4:
+ info->io.inputb = port_inl;
+ info->io.outputb = port_outl;
+ break;
+ default:
+ printk("ipmi_si: Invalid register size: %d\n",
+ info->io.regsize);
+ return -EINVAL;
}
- memset(info, 0, sizeof(*info));
- info->io_setup = port_setup;
- info->io_cleanup = port_cleanup;
- info->io.inputb = port_inb;
- info->io.outputb = port_outb;
- info->io.info = &(ports[intf_num]);
- info->io.addr = NULL;
- info->irq = 0;
- info->irq_setup = NULL;
- *new_info = info;
-
- if (si_type[intf_num] == NULL)
- si_type[intf_num] = "kcs";
-
- printk("ipmi_si: Trying \"%s\" at I/O port 0x%x\n",
- si_type[intf_num], ports[intf_num]);
+ /* Some BIOSes reserve disjoint I/O regions in their ACPI
+ * tables. This causes problems when trying to register the
+ * entire I/O region. Therefore we must register each I/O
+ * port separately.
+ */
+ for (idx = 0; idx < info->io_size; idx++) {
+ if (request_region(addr + idx * info->io.regspacing,
+ info->io.regsize, DEVICE_NAME) == NULL) {
+ /* Undo allocations */
+ while (idx--) {
+ release_region(addr + idx * info->io.regspacing,
+ info->io.regsize);
+ }
+ return -EIO;
+ }
+ }
return 0;
}
-static unsigned char mem_inb(struct si_sm_io *io, unsigned int offset)
+static unsigned char intf_mem_inb(struct si_sm_io *io, unsigned int offset)
{
- return readb((io->addr)+offset);
+ return readb((io->addr)+(offset * io->regspacing));
}
-static void mem_outb(struct si_sm_io *io, unsigned int offset,
+static void intf_mem_outb(struct si_sm_io *io, unsigned int offset,
unsigned char b)
{
- writeb(b, (io->addr)+offset);
+ writeb(b, (io->addr)+(offset * io->regspacing));
}
-static int mem_setup(struct smi_info *info)
+static unsigned char intf_mem_inw(struct si_sm_io *io, unsigned int offset)
+{
+ return (readw((io->addr)+(offset * io->regspacing)) >> io->regshift)
+ & 0xff;
+}
+
+static void intf_mem_outw(struct si_sm_io *io, unsigned int offset,
+ unsigned char b)
{
- unsigned long *addr = info->io.info;
+ writeb(b << io->regshift, (io->addr)+(offset * io->regspacing));
+}
- if (!addr || (!*addr))
- return -ENODEV;
+static unsigned char intf_mem_inl(struct si_sm_io *io, unsigned int offset)
+{
+ return (readl((io->addr)+(offset * io->regspacing)) >> io->regshift)
+ & 0xff;
+}
- if (request_mem_region(*addr, info->io_size, DEVICE_NAME) == NULL)
- return -EIO;
+static void intf_mem_outl(struct si_sm_io *io, unsigned int offset,
+ unsigned char b)
+{
+ writel(b << io->regshift, (io->addr)+(offset * io->regspacing));
+}
- info->io.addr = ioremap(*addr, info->io_size);
- if (info->io.addr == NULL) {
- release_mem_region(*addr, info->io_size);
- return -EIO;
- }
- return 0;
+#ifdef readq
+static unsigned char mem_inq(struct si_sm_io *io, unsigned int offset)
+{
+ return (readq((io->addr)+(offset * io->regspacing)) >> io->regshift)
+ & 0xff;
}
+static void mem_outq(struct si_sm_io *io, unsigned int offset,
+ unsigned char b)
+{
+ writeq(b << io->regshift, (io->addr)+(offset * io->regspacing));
+}
+#endif
+
static void mem_cleanup(struct smi_info *info)
{
- unsigned long *addr = info->io.info;
+ unsigned long addr = info->io.addr_data;
+ int mapsize;
if (info->io.addr) {
iounmap(info->io.addr);
- release_mem_region(*addr, info->io_size);
+
+ mapsize = ((info->io_size * info->io.regspacing)
+ - (info->io.regspacing - info->io.regsize));
+
+ release_mem_region(addr, mapsize);
}
- kfree(info);
}
-static int try_init_mem(int intf_num, struct smi_info **new_info)
+static int mem_setup(struct smi_info *info)
{
- struct smi_info *info;
+ unsigned long addr = info->io.addr_data;
+ int mapsize;
- if (!addrs[intf_num])
+ if (!addr)
return -ENODEV;
- if (!is_new_interface(intf_num, IPMI_MEM_ADDR_SPACE,
- addrs[intf_num]))
- return -ENODEV;
+ info->io_cleanup = mem_cleanup;
- info = kmalloc(sizeof(*info), GFP_KERNEL);
- if (!info) {
- printk(KERN_ERR "ipmi_si: Could not allocate SI data (2)\n");
- return -ENOMEM;
+ /* Figure out the actual readb/readw/readl/etc routine to use based
+ upon the register size. */
+ switch (info->io.regsize) {
+ case 1:
+ info->io.inputb = intf_mem_inb;
+ info->io.outputb = intf_mem_outb;
+ break;
+ case 2:
+ info->io.inputb = intf_mem_inw;
+ info->io.outputb = intf_mem_outw;
+ break;
+ case 4:
+ info->io.inputb = intf_mem_inl;
+ info->io.outputb = intf_mem_outl;
+ break;
+#ifdef readq
+ case 8:
+ info->io.inputb = mem_inq;
+ info->io.outputb = mem_outq;
+ break;
+#endif
+ default:
+ printk("ipmi_si: Invalid register size: %d\n",
+ info->io.regsize);
+ return -EINVAL;
}
- memset(info, 0, sizeof(*info));
- info->io_setup = mem_setup;
- info->io_cleanup = mem_cleanup;
- info->io.inputb = mem_inb;
- info->io.outputb = mem_outb;
- info->io.info = (void *) addrs[intf_num];
- info->io.addr = NULL;
- info->irq = 0;
- info->irq_setup = NULL;
- *new_info = info;
-
- if (si_type[intf_num] == NULL)
- si_type[intf_num] = "kcs";
-
- printk("ipmi_si: Trying \"%s\" at memory address 0x%lx\n",
- si_type[intf_num], addrs[intf_num]);
+ /* Calculate the total amount of memory to claim. This is an
+ * unusual looking calculation, but it avoids claiming any
+ * more memory than it has to. It will claim everything
+ * between the first address to the end of the last full
+ * register. */
+ mapsize = ((info->io_size * info->io.regspacing)
+ - (info->io.regspacing - info->io.regsize));
+
+ if (request_mem_region(addr, mapsize, DEVICE_NAME) == NULL)
+ return -EIO;
+
+ info->io.addr = ioremap(addr, mapsize);
+ if (info->io.addr == NULL) {
+ release_mem_region(addr, mapsize);
+ return -EIO;
+ }
return 0;
}
+/*
+ * Parms come in as <op1>[:op2[:op3...]]. ops are:
+ * add|remove,kcs|bt|smic,mem|i/o,<address>[,<opt1>[,<opt2>[,...]]]
+ * Options are:
+ * rsp=<regspacing>
+ * rsi=<regsize>
+ * rsh=<regshift>
+ * irq=<irq>
+ * ipmb=<ipmb addr>
+ */
+enum hotmod_op { HM_ADD, HM_REMOVE };
+struct hotmod_vals {
+ char *name;
+ int val;
+};
+static struct hotmod_vals hotmod_ops[] = {
+ { "add", HM_ADD },
+ { "remove", HM_REMOVE },
+ { NULL }
+};
+static struct hotmod_vals hotmod_si[] = {
+ { "kcs", SI_KCS },
+ { "smic", SI_SMIC },
+ { "bt", SI_BT },
+ { NULL }
+};
+static struct hotmod_vals hotmod_as[] = {
+ { "mem", IPMI_MEM_ADDR_SPACE },
+ { "i/o", IPMI_IO_ADDR_SPACE },
+ { NULL }
+};
-#ifdef CONFIG_ACPI_INTERPRETER
+static int parse_str(struct hotmod_vals *v, int *val, char *name, char **curr)
+{
+ char *s;
+ int i;
-#include <linux/acpi.h>
+ s = strchr(*curr, ',');
+ if (!s) {
+ printk(KERN_WARNING PFX "No hotmod %s given.\n", name);
+ return -EINVAL;
+ }
+ *s = '\0';
+ s++;
+ for (i = 0; hotmod_ops[i].name; i++) {
+ if (strcmp(*curr, v[i].name) == 0) {
+ *val = v[i].val;
+ *curr = s;
+ return 0;
+ }
+ }
-/* Once we get an ACPI failure, we don't try any more, because we go
- through the tables sequentially. Once we don't find a table, there
- are no more. */
-static int acpi_failure = 0;
+ printk(KERN_WARNING PFX "Invalid hotmod %s '%s'\n", name, *curr);
+ return -EINVAL;
+}
-/* For GPE-type interrupts. */
-void ipmi_acpi_gpe(void *context)
+static int check_hotmod_int_op(const char *curr, const char *option,
+ const char *name, int *val)
{
- struct smi_info *smi_info = context;
- unsigned long flags;
-#ifdef DEBUG_TIMING
- struct timeval t;
-#endif
+ char *n;
+
+ if (strcmp(curr, name) == 0) {
+ if (!option) {
+ printk(KERN_WARNING PFX
+ "No option given for '%s'\n",
+ curr);
+ return -EINVAL;
+ }
+ *val = simple_strtoul(option, &n, 0);
+ if ((*n != '\0') || (*option == '\0')) {
+ printk(KERN_WARNING PFX
+ "Bad option given for '%s'\n",
+ curr);
+ return -EINVAL;
+ }
+ return 1;
+ }
+ return 0;
+}
- spin_lock_irqsave(&(smi_info->si_lock), flags);
+static int hotmod_handler(const char *val, struct kernel_param *kp)
+{
+ char *str = kstrdup(val, GFP_KERNEL);
+ int rv;
+ char *next, *curr, *s, *n, *o;
+ enum hotmod_op op;
+ enum si_type si_type;
+ int addr_space;
+ unsigned long addr;
+ int regspacing;
+ int regsize;
+ int regshift;
+ int irq;
+ int ipmb;
+ int ival;
+ int len;
+ struct smi_info *info;
- spin_lock(&smi_info->count_lock);
- smi_info->interrupts++;
- spin_unlock(&smi_info->count_lock);
+ if (!str)
+ return -ENOMEM;
- if (smi_info->stop_operation)
- goto out;
+ /* Kill any trailing spaces, as we can get a "\n" from echo. */
+ len = strlen(str);
+ ival = len - 1;
+ while ((ival >= 0) && isspace(str[ival])) {
+ str[ival] = '\0';
+ ival--;
+ }
+
+ for (curr = str; curr; curr = next) {
+ regspacing = 1;
+ regsize = 1;
+ regshift = 0;
+ irq = 0;
+ ipmb = 0x20;
+
+ next = strchr(curr, ':');
+ if (next) {
+ *next = '\0';
+ next++;
+ }
+
+ rv = parse_str(hotmod_ops, &ival, "operation", &curr);
+ if (rv)
+ break;
+ op = ival;
+
+ rv = parse_str(hotmod_si, &ival, "interface type", &curr);
+ if (rv)
+ break;
+ si_type = ival;
+
+ rv = parse_str(hotmod_as, &addr_space, "address space", &curr);
+ if (rv)
+ break;
+
+ s = strchr(curr, ',');
+ if (s) {
+ *s = '\0';
+ s++;
+ }
+ addr = simple_strtoul(curr, &n, 0);
+ if ((*n != '\0') || (*curr == '\0')) {
+ printk(KERN_WARNING PFX "Invalid hotmod address"
+ " '%s'\n", curr);
+ break;
+ }
+
+ while (s) {
+ curr = s;
+ s = strchr(curr, ',');
+ if (s) {
+ *s = '\0';
+ s++;
+ }
+ o = strchr(curr, '=');
+ if (o) {
+ *o = '\0';
+ o++;
+ }
+ rv = check_hotmod_int_op(curr, o, "rsp", ®spacing);
+ if (rv < 0)
+ goto out;
+ else if (rv)
+ continue;
+ rv = check_hotmod_int_op(curr, o, "rsi", ®size);
+ if (rv < 0)
+ goto out;
+ else if (rv)
+ continue;
+ rv = check_hotmod_int_op(curr, o, "rsh", ®shift);
+ if (rv < 0)
+ goto out;
+ else if (rv)
+ continue;
+ rv = check_hotmod_int_op(curr, o, "irq", &irq);
+ if (rv < 0)
+ goto out;
+ else if (rv)
+ continue;
+ rv = check_hotmod_int_op(curr, o, "ipmb", &ipmb);
+ if (rv < 0)
+ goto out;
+ else if (rv)
+ continue;
+
+ rv = -EINVAL;
+ printk(KERN_WARNING PFX
+ "Invalid hotmod option '%s'\n",
+ curr);
+ goto out;
+ }
+
+ if (op == HM_ADD) {
+ info = kzalloc(sizeof(*info), GFP_KERNEL);
+ if (!info) {
+ rv = -ENOMEM;
+ goto out;
+ }
+
+ info->addr_source = "hotmod";
+ info->si_type = si_type;
+ info->io.addr_data = addr;
+ info->io.addr_type = addr_space;
+ if (addr_space == IPMI_MEM_ADDR_SPACE)
+ info->io_setup = mem_setup;
+ else
+ info->io_setup = port_setup;
+
+ info->io.addr = NULL;
+ info->io.regspacing = regspacing;
+ if (!info->io.regspacing)
+ info->io.regspacing = DEFAULT_REGSPACING;
+ info->io.regsize = regsize;
+ if (!info->io.regsize)
+ info->io.regsize = DEFAULT_REGSPACING;
+ info->io.regshift = regshift;
+ info->irq = irq;
+ if (info->irq)
+ info->irq_setup = std_irq_setup;
+ info->slave_addr = ipmb;
+
+ try_smi_init(info);
+ } else {
+ /* remove */
+ struct smi_info *e, *tmp_e;
+
+ mutex_lock(&smi_infos_lock);
+ list_for_each_entry_safe(e, tmp_e, &smi_infos, link) {
+ if (e->io.addr_type != addr_space)
+ continue;
+ if (e->si_type != si_type)
+ continue;
+ if (e->io.addr_data == addr)
+ cleanup_one_si(e);
+ }
+ mutex_unlock(&smi_infos_lock);
+ }
+ }
+ rv = len;
+ out:
+ kfree(str);
+ return rv;
+}
+
+static __devinit void hardcode_find_bmc(void)
+{
+ int i;
+ struct smi_info *info;
+
+ for (i = 0; i < SI_MAX_PARMS; i++) {
+ if (!ports[i] && !addrs[i])
+ continue;
+
+ info = kzalloc(sizeof(*info), GFP_KERNEL);
+ if (!info)
+ return;
+
+ info->addr_source = "hardcoded";
+
+ if (!si_type[i] || strcmp(si_type[i], "kcs") == 0) {
+ info->si_type = SI_KCS;
+ } else if (strcmp(si_type[i], "smic") == 0) {
+ info->si_type = SI_SMIC;
+ } else if (strcmp(si_type[i], "bt") == 0) {
+ info->si_type = SI_BT;
+ } else {
+ printk(KERN_WARNING
+ "ipmi_si: Interface type specified "
+ "for interface %d, was invalid: %s\n",
+ i, si_type[i]);
+ kfree(info);
+ continue;
+ }
+
+ if (ports[i]) {
+ /* An I/O port */
+ info->io_setup = port_setup;
+ info->io.addr_data = ports[i];
+ info->io.addr_type = IPMI_IO_ADDR_SPACE;
+ } else if (addrs[i]) {
+ /* A memory port */
+ info->io_setup = mem_setup;
+ info->io.addr_data = addrs[i];
+ info->io.addr_type = IPMI_MEM_ADDR_SPACE;
+ } else {
+ printk(KERN_WARNING
+ "ipmi_si: Interface type specified "
+ "for interface %d, "
+ "but port and address were not set or "
+ "set to zero.\n", i);
+ kfree(info);
+ continue;
+ }
+
+ info->io.addr = NULL;
+ info->io.regspacing = regspacings[i];
+ if (!info->io.regspacing)
+ info->io.regspacing = DEFAULT_REGSPACING;
+ info->io.regsize = regsizes[i];
+ if (!info->io.regsize)
+ info->io.regsize = DEFAULT_REGSPACING;
+ info->io.regshift = regshifts[i];
+ info->irq = irqs[i];
+ if (info->irq)
+ info->irq_setup = std_irq_setup;
+
+ try_smi_init(info);
+ }
+}
+
+#ifdef CONFIG_ACPI
+
+#include <linux/acpi.h>
+
+/* Once we get an ACPI failure, we don't try any more, because we go
+ through the tables sequentially. Once we don't find a table, there
+ are no more. */
+static int acpi_failure;
+
+/* For GPE-type interrupts. */
+static u32 ipmi_acpi_gpe(void *context)
+{
+ struct smi_info *smi_info = context;
+ unsigned long flags;
+#ifdef DEBUG_TIMING
+ struct timeval t;
+#endif
+
+ spin_lock_irqsave(&(smi_info->si_lock), flags);
+
+ spin_lock(&smi_info->count_lock);
+ smi_info->interrupts++;
+ spin_unlock(&smi_info->count_lock);
+
+ if (atomic_read(&smi_info->stop_operation))
+ goto out;
#ifdef DEBUG_TIMING
do_gettimeofday(&t);
smi_event_handler(smi_info, 0);
out:
spin_unlock_irqrestore(&(smi_info->si_lock), flags);
+
+ return ACPI_INTERRUPT_HANDLED;
+}
+
+static void acpi_gpe_irq_cleanup(struct smi_info *info)
+{
+ if (!info->irq)
+ return;
+
+ acpi_remove_gpe_handler(NULL, info->irq, &ipmi_acpi_gpe);
}
static int acpi_gpe_irq_setup(struct smi_info *info)
status = acpi_install_gpe_handler(NULL,
info->irq,
ACPI_GPE_LEVEL_TRIGGERED,
- ipmi_acpi_gpe,
+ &ipmi_acpi_gpe,
info);
if (status != AE_OK) {
printk(KERN_WARNING
info->irq = 0;
return -EINVAL;
} else {
+ info->irq_cleanup = acpi_gpe_irq_cleanup;
printk(" Using ACPI GPE %d\n", info->irq);
return 0;
}
-
-}
-
-static void acpi_gpe_irq_cleanup(struct smi_info *info)
-{
- if (!info->irq)
- return;
-
- acpi_remove_gpe_handler(NULL, info->irq, ipmi_acpi_gpe);
}
/*
s8 spmi_id[1]; /* A '\0' terminated array starts here. */
};
-static int try_init_acpi(int intf_num, struct smi_info **new_info)
+static __devinit int try_init_acpi(struct SPMITable *spmi)
{
struct smi_info *info;
- acpi_status status;
- struct SPMITable *spmi;
- char *io_type;
u8 addr_space;
- if (acpi_failure)
- return -ENODEV;
-
- status = acpi_get_firmware_table("SPMI", intf_num+1,
- ACPI_LOGICAL_ADDRESSING,
- (struct acpi_table_header **) &spmi);
- if (status != AE_OK) {
- acpi_failure = 1;
- return -ENODEV;
- }
-
if (spmi->IPMIlegacy != 1) {
printk(KERN_INFO "IPMI: Bad SPMI legacy %d\n", spmi->IPMIlegacy);
return -ENODEV;
addr_space = IPMI_MEM_ADDR_SPACE;
else
addr_space = IPMI_IO_ADDR_SPACE;
- if (!is_new_interface(-1, addr_space, spmi->addr.address))
- return -ENODEV;
+
+ info = kzalloc(sizeof(*info), GFP_KERNEL);
+ if (!info) {
+ printk(KERN_ERR "ipmi_si: Could not allocate SI data (3)\n");
+ return -ENOMEM;
+ }
+
+ info->addr_source = "ACPI";
/* Figure out the interface type. */
switch (spmi->InterfaceType)
{
case 1: /* KCS */
- si_type[intf_num] = "kcs";
+ info->si_type = SI_KCS;
break;
-
case 2: /* SMIC */
- si_type[intf_num] = "smic";
+ info->si_type = SI_SMIC;
break;
-
case 3: /* BT */
- si_type[intf_num] = "bt";
+ info->si_type = SI_BT;
break;
-
default:
printk(KERN_INFO "ipmi_si: Unknown ACPI/SPMI SI type %d\n",
spmi->InterfaceType);
+ kfree(info);
return -EIO;
}
- info = kmalloc(sizeof(*info), GFP_KERNEL);
- if (!info) {
- printk(KERN_ERR "ipmi_si: Could not allocate SI data (3)\n");
- return -ENOMEM;
- }
- memset(info, 0, sizeof(*info));
-
if (spmi->InterruptType & 1) {
/* We've got a GPE interrupt. */
info->irq = spmi->GPE;
info->irq_setup = acpi_gpe_irq_setup;
- info->irq_cleanup = acpi_gpe_irq_cleanup;
} else if (spmi->InterruptType & 2) {
/* We've got an APIC/SAPIC interrupt. */
info->irq = spmi->GlobalSystemInterrupt;
info->irq_setup = std_irq_setup;
- info->irq_cleanup = std_irq_cleanup;
} else {
/* Use the default interrupt setting. */
info->irq = 0;
info->irq_setup = NULL;
}
+ if (spmi->addr.register_bit_width) {
+ /* A (hopefully) properly formed register bit width. */
+ info->io.regspacing = spmi->addr.register_bit_width / 8;
+ } else {
+ info->io.regspacing = DEFAULT_REGSPACING;
+ }
+ info->io.regsize = info->io.regspacing;
+ info->io.regshift = spmi->addr.register_bit_offset;
+
if (spmi->addr.address_space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) {
- io_type = "memory";
info->io_setup = mem_setup;
- info->io_cleanup = mem_cleanup;
- addrs[intf_num] = spmi->addr.address;
- info->io.inputb = mem_inb;
- info->io.outputb = mem_outb;
- info->io.info = &(addrs[intf_num]);
+ info->io.addr_type = IPMI_IO_ADDR_SPACE;
} else if (spmi->addr.address_space_id == ACPI_ADR_SPACE_SYSTEM_IO) {
- io_type = "I/O";
info->io_setup = port_setup;
- info->io_cleanup = port_cleanup;
- ports[intf_num] = spmi->addr.address;
- info->io.inputb = port_inb;
- info->io.outputb = port_outb;
- info->io.info = &(ports[intf_num]);
+ info->io.addr_type = IPMI_MEM_ADDR_SPACE;
} else {
kfree(info);
printk("ipmi_si: Unknown ACPI I/O Address type\n");
return -EIO;
}
+ info->io.addr_data = spmi->addr.address;
- *new_info = info;
+ try_smi_init(info);
- printk("ipmi_si: ACPI/SPMI specifies \"%s\" %s SI @ 0x%lx\n",
- si_type[intf_num], io_type, (unsigned long) spmi->addr.address);
return 0;
}
-#endif
-#ifdef CONFIG_X86
+static __devinit void acpi_find_bmc(void)
+{
+ acpi_status status;
+ struct SPMITable *spmi;
+ int i;
+
+ if (acpi_disabled)
+ return;
+
+ if (acpi_failure)
+ return;
-typedef struct dmi_ipmi_data
+ for (i = 0; ; i++) {
+ status = acpi_get_firmware_table("SPMI", i+1,
+ ACPI_LOGICAL_ADDRESSING,
+ (struct acpi_table_header **)
+ &spmi);
+ if (status != AE_OK)
+ return;
+
+ try_init_acpi(spmi);
+ }
+}
+#endif
+
+#ifdef CONFIG_DMI
+struct dmi_ipmi_data
{
u8 type;
u8 addr_space;
unsigned long base_addr;
u8 irq;
-}dmi_ipmi_data_t;
-
-typedef struct dmi_header
-{
- u8 type;
- u8 length;
- u16 handle;
-}dmi_header_t;
+ u8 offset;
+ u8 slave_addr;
+};
-static int decode_dmi(dmi_header_t *dm, dmi_ipmi_data_t *ipmi_data)
+static int __devinit decode_dmi(struct dmi_header *dm,
+ struct dmi_ipmi_data *dmi)
{
- u8 *data = (u8 *)dm;
+ u8 *data = (u8 *)dm;
unsigned long base_addr;
+ u8 reg_spacing;
+ u8 len = dm->length;
- ipmi_data->type = data[0x04];
+ dmi->type = data[4];
- memcpy(&base_addr,&data[0x08],sizeof(unsigned long));
- if (base_addr & 1) {
- /* I/O */
- base_addr &= 0xFFFE;
- ipmi_data->addr_space = IPMI_IO_ADDR_SPACE;
- }
- else {
- /* Memory */
- ipmi_data->addr_space = IPMI_MEM_ADDR_SPACE;
+ memcpy(&base_addr, data+8, sizeof(unsigned long));
+ if (len >= 0x11) {
+ if (base_addr & 1) {
+ /* I/O */
+ base_addr &= 0xFFFE;
+ dmi->addr_space = IPMI_IO_ADDR_SPACE;
+ }
+ else {
+ /* Memory */
+ dmi->addr_space = IPMI_MEM_ADDR_SPACE;
+ }
+ /* If bit 4 of byte 0x10 is set, then the lsb for the address
+ is odd. */
+ dmi->base_addr = base_addr | ((data[0x10] & 0x10) >> 4);
+
+ dmi->irq = data[0x11];
+
+ /* The top two bits of byte 0x10 hold the register spacing. */
+ reg_spacing = (data[0x10] & 0xC0) >> 6;
+ switch(reg_spacing){
+ case 0x00: /* Byte boundaries */
+ dmi->offset = 1;
+ break;
+ case 0x01: /* 32-bit boundaries */
+ dmi->offset = 4;
+ break;
+ case 0x02: /* 16-byte boundaries */
+ dmi->offset = 16;
+ break;
+ default:
+ /* Some other interface, just ignore it. */
+ return -EIO;
+ }
+ } else {
+ /* Old DMI spec. */
+ /* Note that technically, the lower bit of the base
+ * address should be 1 if the address is I/O and 0 if
+ * the address is in memory. So many systems get that
+ * wrong (and all that I have seen are I/O) so we just
+ * ignore that bit and assume I/O. Systems that use
+ * memory should use the newer spec, anyway. */
+ dmi->base_addr = base_addr & 0xfffe;
+ dmi->addr_space = IPMI_IO_ADDR_SPACE;
+ dmi->offset = 1;
}
- ipmi_data->base_addr = base_addr;
- ipmi_data->irq = data[0x11];
-
- if (is_new_interface(-1, ipmi_data->addr_space,ipmi_data->base_addr))
- return 0;
-
- memset(ipmi_data,0,sizeof(dmi_ipmi_data_t));
+ dmi->slave_addr = data[6];
- return -1;
+ return 0;
}
-static int dmi_table(u32 base, int len, int num,
- dmi_ipmi_data_t *ipmi_data)
+static __devinit void try_init_dmi(struct dmi_ipmi_data *ipmi_data)
{
- u8 *buf;
- struct dmi_header *dm;
- u8 *data;
- int i=1;
- int status=-1;
-
- buf = ioremap(base, len);
- if(buf==NULL)
- return -1;
-
- data = buf;
-
- while(i<num && (data - buf) < len)
- {
- dm=(dmi_header_t *)data;
+ struct smi_info *info;
- if((data-buf+dm->length) >= len)
- break;
+ info = kzalloc(sizeof(*info), GFP_KERNEL);
+ if (!info) {
+ printk(KERN_ERR
+ "ipmi_si: Could not allocate SI data\n");
+ return;
+ }
- if (dm->type == 38) {
- if (decode_dmi(dm, ipmi_data) == 0) {
- status = 0;
- break;
- }
- }
+ info->addr_source = "SMBIOS";
- data+=dm->length;
- while((data-buf) < len && (*data || data[1]))
- data++;
- data+=2;
- i++;
+ switch (ipmi_data->type) {
+ case 0x01: /* KCS */
+ info->si_type = SI_KCS;
+ break;
+ case 0x02: /* SMIC */
+ info->si_type = SI_SMIC;
+ break;
+ case 0x03: /* BT */
+ info->si_type = SI_BT;
+ break;
+ default:
+ return;
}
- iounmap(buf);
-
- return status;
-}
-inline static int dmi_checksum(u8 *buf)
-{
- u8 sum=0;
- int a;
+ switch (ipmi_data->addr_space) {
+ case IPMI_MEM_ADDR_SPACE:
+ info->io_setup = mem_setup;
+ info->io.addr_type = IPMI_MEM_ADDR_SPACE;
+ break;
- for(a=0; a<15; a++)
- sum+=buf[a];
- return (sum==0);
-}
+ case IPMI_IO_ADDR_SPACE:
+ info->io_setup = port_setup;
+ info->io.addr_type = IPMI_IO_ADDR_SPACE;
+ break;
-static int dmi_iterator(dmi_ipmi_data_t *ipmi_data)
-{
- u8 buf[15];
- u32 fp=0xF0000;
+ default:
+ kfree(info);
+ printk(KERN_WARNING
+ "ipmi_si: Unknown SMBIOS I/O Address type: %d.\n",
+ ipmi_data->addr_space);
+ return;
+ }
+ info->io.addr_data = ipmi_data->base_addr;
-#ifdef CONFIG_SIMNOW
- return -1;
-#endif
+ info->io.regspacing = ipmi_data->offset;
+ if (!info->io.regspacing)
+ info->io.regspacing = DEFAULT_REGSPACING;
+ info->io.regsize = DEFAULT_REGSPACING;
+ info->io.regshift = 0;
- while(fp < 0xFFFFF)
- {
- isa_memcpy_fromio(buf, fp, 15);
- if(memcmp(buf, "_DMI_", 5)==0 && dmi_checksum(buf))
- {
- u16 num=buf[13]<<8|buf[12];
- u16 len=buf[7]<<8|buf[6];
- u32 base=buf[11]<<24|buf[10]<<16|buf[9]<<8|buf[8];
+ info->slave_addr = ipmi_data->slave_addr;
- if(dmi_table(base, len, num, ipmi_data) == 0)
- return 0;
- }
- fp+=16;
- }
+ info->irq = ipmi_data->irq;
+ if (info->irq)
+ info->irq_setup = std_irq_setup;
- return -1;
+ try_smi_init(info);
}
-static int try_init_smbios(int intf_num, struct smi_info **new_info)
+static void __devinit dmi_find_bmc(void)
{
- struct smi_info *info;
- dmi_ipmi_data_t ipmi_data;
- char *io_type;
- int status;
-
- status = dmi_iterator(&ipmi_data);
-
- if (status < 0)
- return -ENODEV;
-
- switch(ipmi_data.type) {
- case 0x01: /* KCS */
- si_type[intf_num] = "kcs";
- break;
- case 0x02: /* SMIC */
- si_type[intf_num] = "smic";
- break;
- case 0x03: /* BT */
- si_type[intf_num] = "bt";
- break;
- default:
- printk("ipmi_si: Unknown SMBIOS SI type.\n");
- return -EIO;
- }
-
- info = kmalloc(sizeof(*info), GFP_KERNEL);
- if (!info) {
- printk(KERN_ERR "ipmi_si: Could not allocate SI data (4)\n");
- return -ENOMEM;
- }
- memset(info, 0, sizeof(*info));
+ struct dmi_device *dev = NULL;
+ struct dmi_ipmi_data data;
+ int rv;
- if (ipmi_data.addr_space == 1) {
- io_type = "memory";
- info->io_setup = mem_setup;
- info->io_cleanup = mem_cleanup;
- addrs[intf_num] = ipmi_data.base_addr;
- info->io.inputb = mem_inb;
- info->io.outputb = mem_outb;
- info->io.info = &(addrs[intf_num]);
- } else if (ipmi_data.addr_space == 2) {
- io_type = "I/O";
- info->io_setup = port_setup;
- info->io_cleanup = port_cleanup;
- ports[intf_num] = ipmi_data.base_addr;
- info->io.inputb = port_inb;
- info->io.outputb = port_outb;
- info->io.info = &(ports[intf_num]);
- } else {
- kfree(info);
- printk("ipmi_si: Unknown SMBIOS I/O Address type.\n");
- return -EIO;
+ while ((dev = dmi_find_device(DMI_DEV_TYPE_IPMI, NULL, dev))) {
+ memset(&data, 0, sizeof(data));
+ rv = decode_dmi((struct dmi_header *) dev->device_data, &data);
+ if (!rv)
+ try_init_dmi(&data);
}
-
- irqs[intf_num] = ipmi_data.irq;
-
- *new_info = info;
-
- printk("ipmi_si: Found SMBIOS-specified state machine at %s"
- " address 0x%lx\n",
- io_type, (unsigned long)ipmi_data.base_addr);
- return 0;
}
-#endif /* CONFIG_X86 */
+#endif /* CONFIG_DMI */
#ifdef CONFIG_PCI
-#define PCI_ERMC_CLASSCODE 0x0C0700
+#define PCI_ERMC_CLASSCODE 0x0C0700
+#define PCI_ERMC_CLASSCODE_MASK 0xffffff00
+#define PCI_ERMC_CLASSCODE_TYPE_MASK 0xff
+#define PCI_ERMC_CLASSCODE_TYPE_SMIC 0x00
+#define PCI_ERMC_CLASSCODE_TYPE_KCS 0x01
+#define PCI_ERMC_CLASSCODE_TYPE_BT 0x02
+
#define PCI_HP_VENDOR_ID 0x103C
#define PCI_MMC_DEVICE_ID 0x121A
#define PCI_MMC_ADDR_CW 0x10
-/* Avoid more than one attempt to probe pci smic. */
-static int pci_smic_checked = 0;
+static void ipmi_pci_cleanup(struct smi_info *info)
+{
+ struct pci_dev *pdev = info->addr_source_data;
+
+ pci_disable_device(pdev);
+}
-static int find_pci_smic(int intf_num, struct smi_info **new_info)
+static int __devinit ipmi_pci_probe(struct pci_dev *pdev,
+ const struct pci_device_id *ent)
{
- struct smi_info *info;
- int error;
- struct pci_dev *pci_dev = NULL;
- u16 base_addr;
- int fe_rmc = 0;
+ int rv;
+ int class_type = pdev->class & PCI_ERMC_CLASSCODE_TYPE_MASK;
+ struct smi_info *info;
+ int first_reg_offset = 0;
- if (pci_smic_checked)
- return -ENODEV;
+ info = kzalloc(sizeof(*info), GFP_KERNEL);
+ if (!info)
+ return -ENOMEM;
- pci_smic_checked = 1;
+ info->addr_source = "PCI";
- if ((pci_dev = pci_find_device(PCI_HP_VENDOR_ID, PCI_MMC_DEVICE_ID,
- NULL)))
- ;
- else if ((pci_dev = pci_find_class(PCI_ERMC_CLASSCODE, NULL)) &&
- pci_dev->subsystem_vendor == PCI_HP_VENDOR_ID)
- fe_rmc = 1;
- else
- return -ENODEV;
+ switch (class_type) {
+ case PCI_ERMC_CLASSCODE_TYPE_SMIC:
+ info->si_type = SI_SMIC;
+ break;
- error = pci_read_config_word(pci_dev, PCI_MMC_ADDR_CW, &base_addr);
- if (error)
- {
- printk(KERN_ERR
- "ipmi_si: pci_read_config_word() failed (%d).\n",
- error);
- return -ENODEV;
+ case PCI_ERMC_CLASSCODE_TYPE_KCS:
+ info->si_type = SI_KCS;
+ break;
+
+ case PCI_ERMC_CLASSCODE_TYPE_BT:
+ info->si_type = SI_BT;
+ break;
+
+ default:
+ kfree(info);
+ printk(KERN_INFO "ipmi_si: %s: Unknown IPMI type: %d\n",
+ pci_name(pdev), class_type);
+ return -ENOMEM;
}
- /* Bit 0: 1 specifies programmed I/O, 0 specifies memory mapped I/O */
- if (!(base_addr & 0x0001))
- {
- printk(KERN_ERR
- "ipmi_si: memory mapped I/O not supported for PCI"
- " smic.\n");
- return -ENODEV;
+ rv = pci_enable_device(pdev);
+ if (rv) {
+ printk(KERN_ERR "ipmi_si: %s: couldn't enable PCI device\n",
+ pci_name(pdev));
+ kfree(info);
+ return rv;
}
- base_addr &= 0xFFFE;
- if (!fe_rmc)
- /* Data register starts at base address + 1 in eRMC */
- ++base_addr;
+ info->addr_source_cleanup = ipmi_pci_cleanup;
+ info->addr_source_data = pdev;
- if (!is_new_interface(-1, IPMI_IO_ADDR_SPACE, base_addr))
- return -ENODEV;
+ if (pdev->subsystem_vendor == PCI_HP_VENDOR_ID)
+ first_reg_offset = 1;
- info = kmalloc(sizeof(*info), GFP_KERNEL);
- if (!info) {
- printk(KERN_ERR "ipmi_si: Could not allocate SI data (5)\n");
- return -ENOMEM;
+ if (pci_resource_flags(pdev, 0) & IORESOURCE_IO) {
+ info->io_setup = port_setup;
+ info->io.addr_type = IPMI_IO_ADDR_SPACE;
+ } else {
+ info->io_setup = mem_setup;
+ info->io.addr_type = IPMI_MEM_ADDR_SPACE;
}
- memset(info, 0, sizeof(*info));
+ info->io.addr_data = pci_resource_start(pdev, 0);
- info->io_setup = port_setup;
- info->io_cleanup = port_cleanup;
- ports[intf_num] = base_addr;
- info->io.inputb = port_inb;
- info->io.outputb = port_outb;
- info->io.info = &(ports[intf_num]);
+ info->io.regspacing = DEFAULT_REGSPACING;
+ info->io.regsize = DEFAULT_REGSPACING;
+ info->io.regshift = 0;
- *new_info = info;
+ info->irq = pdev->irq;
+ if (info->irq)
+ info->irq_setup = std_irq_setup;
- irqs[intf_num] = pci_dev->irq;
- si_type[intf_num] = "smic";
+ info->dev = &pdev->dev;
- printk("ipmi_si: Found PCI SMIC at I/O address 0x%lx\n",
- (long unsigned int) base_addr);
+ return try_smi_init(info);
+}
+
+static void __devexit ipmi_pci_remove(struct pci_dev *pdev)
+{
+}
+#ifdef CONFIG_PM
+static int ipmi_pci_suspend(struct pci_dev *pdev, pm_message_t state)
+{
return 0;
}
-#endif /* CONFIG_PCI */
-static int try_init_plug_and_play(int intf_num, struct smi_info **new_info)
+static int ipmi_pci_resume(struct pci_dev *pdev)
{
-#ifdef CONFIG_PCI
- if (find_pci_smic(intf_num, new_info)==0)
- return 0;
+ return 0;
+}
#endif
- /* Include other methods here. */
- return -ENODEV;
-}
+static struct pci_device_id ipmi_pci_devices[] = {
+ { PCI_DEVICE(PCI_HP_VENDOR_ID, PCI_MMC_DEVICE_ID) },
+ { PCI_DEVICE_CLASS(PCI_ERMC_CLASSCODE, PCI_ERMC_CLASSCODE_MASK) }
+};
+MODULE_DEVICE_TABLE(pci, ipmi_pci_devices);
+
+static struct pci_driver ipmi_pci_driver = {
+ .name = DEVICE_NAME,
+ .id_table = ipmi_pci_devices,
+ .probe = ipmi_pci_probe,
+ .remove = __devexit_p(ipmi_pci_remove),
+#ifdef CONFIG_PM
+ .suspend = ipmi_pci_suspend,
+ .resume = ipmi_pci_resume,
+#endif
+};
+#endif /* CONFIG_PCI */
static int try_get_dev_id(struct smi_info *smi_info)
{
- unsigned char msg[2];
- unsigned char *resp;
- unsigned long resp_len;
- enum si_sm_result smi_result;
- int rv = 0;
+ unsigned char msg[2];
+ unsigned char *resp;
+ unsigned long resp_len;
+ enum si_sm_result smi_result;
+ int rv = 0;
resp = kmalloc(IPMI_MAX_MSG_LENGTH, GFP_KERNEL);
if (!resp)
smi_result = smi_info->handlers->event(smi_info->si_sm, 0);
for (;;)
{
- if (smi_result == SI_SM_CALL_WITH_DELAY) {
- set_current_state(TASK_UNINTERRUPTIBLE);
- schedule_timeout(1);
+ if (smi_result == SI_SM_CALL_WITH_DELAY ||
+ smi_result == SI_SM_CALL_WITH_TICK_DELAY) {
+ schedule_timeout_uninterruptible(1);
smi_result = smi_info->handlers->event(
smi_info->si_sm, 100);
}
/* Otherwise, we got some data. */
resp_len = smi_info->handlers->get_result(smi_info->si_sm,
resp, IPMI_MAX_MSG_LENGTH);
- if (resp_len < 6) {
+ if (resp_len < 14) {
/* That's odd, it should be longer. */
rv = -EINVAL;
goto out;
}
/* Record info from the get device id, in case we need it. */
- smi_info->ipmi_si_dev_rev = resp[4] & 0xf;
- smi_info->ipmi_si_fw_rev_major = resp[5] & 0x7f;
- smi_info->ipmi_si_fw_rev_minor = resp[6];
- smi_info->ipmi_version_major = resp[7] & 0xf;
- smi_info->ipmi_version_minor = resp[7] >> 4;
+ ipmi_demangle_device_id(resp+3, resp_len-3, &smi_info->device_id);
out:
kfree(resp);
static int type_file_read_proc(char *page, char **start, off_t off,
int count, int *eof, void *data)
{
- char *out = (char *) page;
struct smi_info *smi = data;
- switch (smi->si_type) {
- case SI_KCS:
- return sprintf(out, "kcs\n");
- case SI_SMIC:
- return sprintf(out, "smic\n");
- case SI_BT:
- return sprintf(out, "bt\n");
- default:
- return 0;
- }
+ return sprintf(page, "%s\n", si_to_str[smi->si_type]);
}
static int stat_file_read_proc(char *page, char **start, off_t off,
out += sprintf(out, "incoming_messages: %ld\n",
smi->incoming_messages);
- return (out - ((char *) page));
+ return out - page;
}
-/* Returns 0 if initialized, or negative on an error. */
-static int init_one_smi(int intf_num, struct smi_info **smi)
+static int param_read_proc(char *page, char **start, off_t off,
+ int count, int *eof, void *data)
{
- int rv;
- struct smi_info *new_smi;
+ struct smi_info *smi = data;
+ return sprintf(page,
+ "%s,%s,0x%lx,rsp=%d,rsi=%d,rsh=%d,irq=%d,ipmb=%d\n",
+ si_to_str[smi->si_type],
+ addr_space_to_str[smi->io.addr_type],
+ smi->io.addr_data,
+ smi->io.regspacing,
+ smi->io.regsize,
+ smi->io.regshift,
+ smi->irq,
+ smi->slave_addr);
+}
- rv = try_init_mem(intf_num, &new_smi);
- if (rv)
- rv = try_init_port(intf_num, &new_smi);
-#ifdef CONFIG_ACPI_INTERPRETER
- if ((rv) && (si_trydefaults)) {
- rv = try_init_acpi(intf_num, &new_smi);
- }
-#endif
-#ifdef CONFIG_X86
- if ((rv) && (si_trydefaults)) {
- rv = try_init_smbios(intf_num, &new_smi);
- }
-#endif
- if ((rv) && (si_trydefaults)) {
- rv = try_init_plug_and_play(intf_num, &new_smi);
+/*
+ * oem_data_avail_to_receive_msg_avail
+ * @info - smi_info structure with msg_flags set
+ *
+ * Converts flags from OEM_DATA_AVAIL to RECEIVE_MSG_AVAIL
+ * Returns 1 indicating need to re-run handle_flags().
+ */
+static int oem_data_avail_to_receive_msg_avail(struct smi_info *smi_info)
+{
+ smi_info->msg_flags = ((smi_info->msg_flags & ~OEM_DATA_AVAIL) |
+ RECEIVE_MSG_AVAIL);
+ return 1;
+}
+
+/*
+ * setup_dell_poweredge_oem_data_handler
+ * @info - smi_info.device_id must be populated
+ *
+ * Systems that match, but have firmware version < 1.40 may assert
+ * OEM0_DATA_AVAIL on their own, without being told via Set Flags that
+ * it's safe to do so. Such systems will de-assert OEM1_DATA_AVAIL
+ * upon receipt of IPMI_GET_MSG_CMD, so we should treat these flags
+ * as RECEIVE_MSG_AVAIL instead.
+ *
+ * As Dell has no plans to release IPMI 1.5 firmware that *ever*
+ * assert the OEM[012] bits, and if it did, the driver would have to
+ * change to handle that properly, we don't actually check for the
+ * firmware version.
+ * Device ID = 0x20 BMC on PowerEdge 8G servers
+ * Device Revision = 0x80
+ * Firmware Revision1 = 0x01 BMC version 1.40
+ * Firmware Revision2 = 0x40 BCD encoded
+ * IPMI Version = 0x51 IPMI 1.5
+ * Manufacturer ID = A2 02 00 Dell IANA
+ *
+ * Additionally, PowerEdge systems with IPMI < 1.5 may also assert
+ * OEM0_DATA_AVAIL and needs to be treated as RECEIVE_MSG_AVAIL.
+ *
+ */
+#define DELL_POWEREDGE_8G_BMC_DEVICE_ID 0x20
+#define DELL_POWEREDGE_8G_BMC_DEVICE_REV 0x80
+#define DELL_POWEREDGE_8G_BMC_IPMI_VERSION 0x51
+#define DELL_IANA_MFR_ID 0x0002a2
+static void setup_dell_poweredge_oem_data_handler(struct smi_info *smi_info)
+{
+ struct ipmi_device_id *id = &smi_info->device_id;
+ if (id->manufacturer_id == DELL_IANA_MFR_ID) {
+ if (id->device_id == DELL_POWEREDGE_8G_BMC_DEVICE_ID &&
+ id->device_revision == DELL_POWEREDGE_8G_BMC_DEVICE_REV &&
+ id->ipmi_version == DELL_POWEREDGE_8G_BMC_IPMI_VERSION) {
+ smi_info->oem_data_avail_handler =
+ oem_data_avail_to_receive_msg_avail;
+ }
+ else if (ipmi_version_major(id) < 1 ||
+ (ipmi_version_major(id) == 1 &&
+ ipmi_version_minor(id) < 5)) {
+ smi_info->oem_data_avail_handler =
+ oem_data_avail_to_receive_msg_avail;
+ }
}
+}
+#define CANNOT_RETURN_REQUESTED_LENGTH 0xCA
+static void return_hosed_msg_badsize(struct smi_info *smi_info)
+{
+ struct ipmi_smi_msg *msg = smi_info->curr_msg;
- if (rv)
- return rv;
+ /* Make it a reponse */
+ msg->rsp[0] = msg->data[0] | 4;
+ msg->rsp[1] = msg->data[1];
+ msg->rsp[2] = CANNOT_RETURN_REQUESTED_LENGTH;
+ msg->rsp_size = 3;
+ smi_info->curr_msg = NULL;
+ deliver_recv_msg(smi_info, msg);
+}
- /* So we know not to free it unless we have allocated one. */
- new_smi->intf = NULL;
- new_smi->si_sm = NULL;
- new_smi->handlers = 0;
+/*
+ * dell_poweredge_bt_xaction_handler
+ * @info - smi_info.device_id must be populated
+ *
+ * Dell PowerEdge servers with the BT interface (x6xx and 1750) will
+ * not respond to a Get SDR command if the length of the data
+ * requested is exactly 0x3A, which leads to command timeouts and no
+ * data returned. This intercepts such commands, and causes userspace
+ * callers to try again with a different-sized buffer, which succeeds.
+ */
+
+#define STORAGE_NETFN 0x0A
+#define STORAGE_CMD_GET_SDR 0x23
+static int dell_poweredge_bt_xaction_handler(struct notifier_block *self,
+ unsigned long unused,
+ void *in)
+{
+ struct smi_info *smi_info = in;
+ unsigned char *data = smi_info->curr_msg->data;
+ unsigned int size = smi_info->curr_msg->data_size;
+ if (size >= 8 &&
+ (data[0]>>2) == STORAGE_NETFN &&
+ data[1] == STORAGE_CMD_GET_SDR &&
+ data[7] == 0x3A) {
+ return_hosed_msg_badsize(smi_info);
+ return NOTIFY_STOP;
+ }
+ return NOTIFY_DONE;
+}
- if (!new_smi->irq_setup) {
- new_smi->irq = irqs[intf_num];
- new_smi->irq_setup = std_irq_setup;
- new_smi->irq_cleanup = std_irq_cleanup;
+static struct notifier_block dell_poweredge_bt_xaction_notifier = {
+ .notifier_call = dell_poweredge_bt_xaction_handler,
+};
+
+/*
+ * setup_dell_poweredge_bt_xaction_handler
+ * @info - smi_info.device_id must be filled in already
+ *
+ * Fills in smi_info.device_id.start_transaction_pre_hook
+ * when we know what function to use there.
+ */
+static void
+setup_dell_poweredge_bt_xaction_handler(struct smi_info *smi_info)
+{
+ struct ipmi_device_id *id = &smi_info->device_id;
+ if (id->manufacturer_id == DELL_IANA_MFR_ID &&
+ smi_info->si_type == SI_BT)
+ register_xaction_notifier(&dell_poweredge_bt_xaction_notifier);
+}
+
+/*
+ * setup_oem_data_handler
+ * @info - smi_info.device_id must be filled in already
+ *
+ * Fills in smi_info.device_id.oem_data_available_handler
+ * when we know what function to use there.
+ */
+
+static void setup_oem_data_handler(struct smi_info *smi_info)
+{
+ setup_dell_poweredge_oem_data_handler(smi_info);
+}
+
+static void setup_xaction_handlers(struct smi_info *smi_info)
+{
+ setup_dell_poweredge_bt_xaction_handler(smi_info);
+}
+
+static inline void wait_for_timer_and_thread(struct smi_info *smi_info)
+{
+ if (smi_info->intf) {
+ /* The timer and thread are only running if the
+ interface has been started up and registered. */
+ if (smi_info->thread != NULL)
+ kthread_stop(smi_info->thread);
+ del_timer_sync(&smi_info->si_timer);
}
+}
- /* Default to KCS if no type is specified. */
- if (si_type[intf_num] == NULL) {
- if (si_trydefaults)
- si_type[intf_num] = "kcs";
- else {
- rv = -EINVAL;
- goto out_err;
+static __devinitdata struct ipmi_default_vals
+{
+ int type;
+ int port;
+} ipmi_defaults[] =
+{
+ { .type = SI_KCS, .port = 0xca2 },
+ { .type = SI_SMIC, .port = 0xca9 },
+ { .type = SI_BT, .port = 0xe4 },
+ { .port = 0 }
+};
+
+static __devinit void default_find_bmc(void)
+{
+ struct smi_info *info;
+ int i;
+
+ for (i = 0; ; i++) {
+ if (!ipmi_defaults[i].port)
+ break;
+
+ info = kzalloc(sizeof(*info), GFP_KERNEL);
+ if (!info)
+ return;
+
+ info->addr_source = NULL;
+
+ info->si_type = ipmi_defaults[i].type;
+ info->io_setup = port_setup;
+ info->io.addr_data = ipmi_defaults[i].port;
+ info->io.addr_type = IPMI_IO_ADDR_SPACE;
+
+ info->io.addr = NULL;
+ info->io.regspacing = DEFAULT_REGSPACING;
+ info->io.regsize = DEFAULT_REGSPACING;
+ info->io.regshift = 0;
+
+ if (try_smi_init(info) == 0) {
+ /* Found one... */
+ printk(KERN_INFO "ipmi_si: Found default %s state"
+ " machine at %s address 0x%lx\n",
+ si_to_str[info->si_type],
+ addr_space_to_str[info->io.addr_type],
+ info->io.addr_data);
+ return;
}
}
+}
+
+static int is_new_interface(struct smi_info *info)
+{
+ struct smi_info *e;
+
+ list_for_each_entry(e, &smi_infos, link) {
+ if (e->io.addr_type != info->io.addr_type)
+ continue;
+ if (e->io.addr_data == info->io.addr_data)
+ return 0;
+ }
- /* Set up the state machine to use. */
- if (strcmp(si_type[intf_num], "kcs") == 0) {
+ return 1;
+}
+
+static int try_smi_init(struct smi_info *new_smi)
+{
+ int rv;
+
+ if (new_smi->addr_source) {
+ printk(KERN_INFO "ipmi_si: Trying %s-specified %s state"
+ " machine at %s address 0x%lx, slave address 0x%x,"
+ " irq %d\n",
+ new_smi->addr_source,
+ si_to_str[new_smi->si_type],
+ addr_space_to_str[new_smi->io.addr_type],
+ new_smi->io.addr_data,
+ new_smi->slave_addr, new_smi->irq);
+ }
+
+ mutex_lock(&smi_infos_lock);
+ if (!is_new_interface(new_smi)) {
+ printk(KERN_WARNING "ipmi_si: duplicate interface\n");
+ rv = -EBUSY;
+ goto out_err;
+ }
+
+ /* So we know not to free it unless we have allocated one. */
+ new_smi->intf = NULL;
+ new_smi->si_sm = NULL;
+ new_smi->handlers = NULL;
+
+ switch (new_smi->si_type) {
+ case SI_KCS:
new_smi->handlers = &kcs_smi_handlers;
- new_smi->si_type = SI_KCS;
- } else if (strcmp(si_type[intf_num], "smic") == 0) {
+ break;
+
+ case SI_SMIC:
new_smi->handlers = &smic_smi_handlers;
- new_smi->si_type = SI_SMIC;
- } else if (strcmp(si_type[intf_num], "bt") == 0) {
+ break;
+
+ case SI_BT:
new_smi->handlers = &bt_smi_handlers;
- new_smi->si_type = SI_BT;
- } else {
+ break;
+
+ default:
/* No support for anything else yet. */
rv = -EIO;
goto out_err;
/* Do low-level detection first. */
if (new_smi->handlers->detect(new_smi->si_sm)) {
+ if (new_smi->addr_source)
+ printk(KERN_INFO "ipmi_si: Interface detection"
+ " failed\n");
rv = -ENODEV;
goto out_err;
}
/* Attempt a get device id command. If it fails, we probably
- don't have a SMI here. */
+ don't have a BMC here. */
rv = try_get_dev_id(new_smi);
- if (rv)
+ if (rv) {
+ if (new_smi->addr_source)
+ printk(KERN_INFO "ipmi_si: There appears to be no BMC"
+ " at this location\n");
goto out_err;
+ }
+
+ setup_oem_data_handler(new_smi);
+ setup_xaction_handlers(new_smi);
/* Try to claim any interrupts. */
- new_smi->irq_setup(new_smi);
+ if (new_smi->irq_setup)
+ new_smi->irq_setup(new_smi);
INIT_LIST_HEAD(&(new_smi->xmit_msgs));
INIT_LIST_HEAD(&(new_smi->hp_xmit_msgs));
atomic_set(&new_smi->req_events, 0);
new_smi->run_to_completion = 0;
+ new_smi->interrupt_disabled = 0;
+ atomic_set(&new_smi->stop_operation, 0);
+ new_smi->intf_num = smi_num;
+ smi_num++;
+
+ /* Start clearing the flags before we enable interrupts or the
+ timer to avoid racing with the timer. */
+ start_clear_flags(new_smi);
+ /* IRQ is defined to be set when non-zero. */
+ if (new_smi->irq)
+ new_smi->si_state = SI_CLEARING_FLAGS_THEN_SET_IRQ;
+
+ if (!new_smi->dev) {
+ /* If we don't already have a device from something
+ * else (like PCI), then register a new one. */
+ new_smi->pdev = platform_device_alloc("ipmi_si",
+ new_smi->intf_num);
+ if (rv) {
+ printk(KERN_ERR
+ "ipmi_si_intf:"
+ " Unable to allocate platform device\n");
+ goto out_err;
+ }
+ new_smi->dev = &new_smi->pdev->dev;
+ new_smi->dev->driver = &ipmi_driver;
+
+ rv = platform_device_add(new_smi->pdev);
+ if (rv) {
+ printk(KERN_ERR
+ "ipmi_si_intf:"
+ " Unable to register system interface device:"
+ " %d\n",
+ rv);
+ goto out_err;
+ }
+ new_smi->dev_registered = 1;
+ }
+
rv = ipmi_register_smi(&handlers,
new_smi,
- new_smi->ipmi_version_major,
- new_smi->ipmi_version_minor,
- &(new_smi->intf));
+ &new_smi->device_id,
+ new_smi->dev,
+ "bmc",
+ new_smi->slave_addr);
if (rv) {
printk(KERN_ERR
"ipmi_si: Unable to register device: error %d\n",
rv);
- goto out_err;
+ goto out_err_stop_timer;
}
rv = ipmi_smi_add_proc_entry(new_smi->intf, "type",
printk(KERN_ERR
"ipmi_si: Unable to create proc entry: %d\n",
rv);
- goto out_err;
+ goto out_err_stop_timer;
}
rv = ipmi_smi_add_proc_entry(new_smi->intf, "si_stats",
printk(KERN_ERR
"ipmi_si: Unable to create proc entry: %d\n",
rv);
- goto out_err;
+ goto out_err_stop_timer;
}
- start_clear_flags(new_smi);
-
- /* IRQ is defined to be set when non-zero. */
- if (new_smi->irq)
- new_smi->si_state = SI_CLEARING_FLAGS_THEN_SET_IRQ;
-
- new_smi->interrupt_disabled = 0;
- new_smi->timer_stopped = 0;
- new_smi->stop_operation = 0;
+ rv = ipmi_smi_add_proc_entry(new_smi->intf, "params",
+ param_read_proc, NULL,
+ new_smi, THIS_MODULE);
+ if (rv) {
+ printk(KERN_ERR
+ "ipmi_si: Unable to create proc entry: %d\n",
+ rv);
+ goto out_err_stop_timer;
+ }
- init_timer(&(new_smi->si_timer));
- new_smi->si_timer.data = (long) new_smi;
- new_smi->si_timer.function = smi_timeout;
- new_smi->last_timeout_jiffies = jiffies;
- new_smi->si_timer.expires = jiffies + SI_TIMEOUT_JIFFIES;
- add_timer(&(new_smi->si_timer));
+ list_add_tail(&new_smi->link, &smi_infos);
- *smi = new_smi;
+ mutex_unlock(&smi_infos_lock);
- printk(" IPMI %s interface initialized\n", si_type[intf_num]);
+ printk(" IPMI %s interface initialized\n",si_to_str[new_smi->si_type]);
return 0;
+ out_err_stop_timer:
+ atomic_inc(&new_smi->stop_operation);
+ wait_for_timer_and_thread(new_smi);
+
out_err:
if (new_smi->intf)
ipmi_unregister_smi(new_smi->intf);
- new_smi->irq_cleanup(new_smi);
+ if (new_smi->irq_cleanup)
+ new_smi->irq_cleanup(new_smi);
+
+ /* Wait until we know that we are out of any interrupt
+ handlers might have been running before we freed the
+ interrupt. */
+ synchronize_sched();
+
if (new_smi->si_sm) {
if (new_smi->handlers)
new_smi->handlers->cleanup(new_smi->si_sm);
kfree(new_smi->si_sm);
}
- new_smi->io_cleanup(new_smi);
+ if (new_smi->addr_source_cleanup)
+ new_smi->addr_source_cleanup(new_smi);
+ if (new_smi->io_cleanup)
+ new_smi->io_cleanup(new_smi);
+
+ if (new_smi->dev_registered)
+ platform_device_unregister(new_smi->pdev);
+
+ kfree(new_smi);
+
+ mutex_unlock(&smi_infos_lock);
+
return rv;
}
-static __init int init_ipmi_si(void)
+static __devinit int init_ipmi_si(void)
{
- int rv = 0;
- int pos = 0;
int i;
char *str;
+ int rv;
if (initialized)
return 0;
initialized = 1;
+ /* Register the device drivers. */
+ rv = driver_register(&ipmi_driver);
+ if (rv) {
+ printk(KERN_ERR
+ "init_ipmi_si: Unable to register driver: %d\n",
+ rv);
+ return rv;
+ }
+
+
/* Parse out the si_type string into its components. */
str = si_type_str;
if (*str != '\0') {
- for (i=0; (i<SI_MAX_PARMS) && (*str != '\0'); i++) {
+ for (i = 0; (i < SI_MAX_PARMS) && (*str != '\0'); i++) {
si_type[i] = str;
str = strchr(str, ',');
if (str) {
}
}
- printk(KERN_INFO "IPMI System Interface driver version "
- IPMI_SI_VERSION);
- if (kcs_smi_handlers.version)
- printk(", KCS version %s", kcs_smi_handlers.version);
- if (smic_smi_handlers.version)
- printk(", SMIC version %s", smic_smi_handlers.version);
- if (bt_smi_handlers.version)
- printk(", BT version %s", bt_smi_handlers.version);
- printk("\n");
-
- rv = init_one_smi(0, &(smi_infos[pos]));
- if (rv && !ports[0] && si_trydefaults) {
- /* If we are trying defaults and the initial port is
- not set, then set it. */
- si_type[0] = "kcs";
- ports[0] = DEFAULT_KCS_IO_PORT;
- rv = init_one_smi(0, &(smi_infos[pos]));
- if (rv) {
- /* No KCS - try SMIC */
- si_type[0] = "smic";
- ports[0] = DEFAULT_SMIC_IO_PORT;
- rv = init_one_smi(0, &(smi_infos[pos]));
- }
- if (rv) {
- /* No SMIC - try BT */
- si_type[0] = "bt";
- ports[0] = DEFAULT_BT_IO_PORT;
- rv = init_one_smi(0, &(smi_infos[pos]));
- }
+ printk(KERN_INFO "IPMI System Interface driver.\n");
+
+ hardcode_find_bmc();
+
+#ifdef CONFIG_DMI
+ dmi_find_bmc();
+#endif
+
+#ifdef CONFIG_ACPI
+ acpi_find_bmc();
+#endif
+
+#ifdef CONFIG_PCI
+ rv = pci_register_driver(&ipmi_pci_driver);
+ if (rv){
+ printk(KERN_ERR
+ "init_ipmi_si: Unable to register PCI driver: %d\n",
+ rv);
}
- if (rv == 0)
- pos++;
+#endif
- for (i=1; i < SI_MAX_PARMS; i++) {
- rv = init_one_smi(i, &(smi_infos[pos]));
- if (rv == 0)
- pos++;
+ if (si_trydefaults) {
+ mutex_lock(&smi_infos_lock);
+ if (list_empty(&smi_infos)) {
+ /* No BMC was found, try defaults. */
+ mutex_unlock(&smi_infos_lock);
+ default_find_bmc();
+ } else {
+ mutex_unlock(&smi_infos_lock);
+ }
}
- if (smi_infos[0] == NULL) {
+ mutex_lock(&smi_infos_lock);
+ if (unload_when_empty && list_empty(&smi_infos)) {
+ mutex_unlock(&smi_infos_lock);
+#ifdef CONFIG_PCI
+ pci_unregister_driver(&ipmi_pci_driver);
+#endif
+ driver_unregister(&ipmi_driver);
printk("ipmi_si: Unable to find any System Interface(s)\n");
return -ENODEV;
+ } else {
+ mutex_unlock(&smi_infos_lock);
+ return 0;
}
-
- return 0;
}
module_init(init_ipmi_si);
-void __exit cleanup_one_si(struct smi_info *to_clean)
+static void cleanup_one_si(struct smi_info *to_clean)
{
int rv;
unsigned long flags;
- if (! to_clean)
+ if (!to_clean)
return;
+ list_del(&to_clean->link);
+
/* Tell the timer and interrupt handlers that we are shutting
down. */
spin_lock_irqsave(&(to_clean->si_lock), flags);
spin_lock(&(to_clean->msg_lock));
- to_clean->stop_operation = 1;
+ atomic_inc(&to_clean->stop_operation);
- to_clean->irq_cleanup(to_clean);
+ if (to_clean->irq_cleanup)
+ to_clean->irq_cleanup(to_clean);
spin_unlock(&(to_clean->msg_lock));
spin_unlock_irqrestore(&(to_clean->si_lock), flags);
/* Wait until we know that we are out of any interrupt
handlers might have been running before we freed the
interrupt. */
- synchronize_kernel();
+ synchronize_sched();
+
+ wait_for_timer_and_thread(to_clean);
- /* Wait for the timer to stop. This avoids problems with race
- conditions removing the timer here. */
- while (!to_clean->timer_stopped) {
- set_current_state(TASK_UNINTERRUPTIBLE);
- schedule_timeout(1);
+ /* Interrupts and timeouts are stopped, now make sure the
+ interface is in a clean state. */
+ while (to_clean->curr_msg || (to_clean->si_state != SI_NORMAL)) {
+ poll(to_clean);
+ schedule_timeout_uninterruptible(1);
}
rv = ipmi_unregister_smi(to_clean->intf);
kfree(to_clean->si_sm);
- to_clean->io_cleanup(to_clean);
+ if (to_clean->addr_source_cleanup)
+ to_clean->addr_source_cleanup(to_clean);
+ if (to_clean->io_cleanup)
+ to_clean->io_cleanup(to_clean);
+
+ if (to_clean->dev_registered)
+ platform_device_unregister(to_clean->pdev);
+
+ kfree(to_clean);
}
static __exit void cleanup_ipmi_si(void)
{
- int i;
+ struct smi_info *e, *tmp_e;
if (!initialized)
return;
- for (i=0; i<SI_MAX_DRIVERS; i++) {
- cleanup_one_si(smi_infos[i]);
- }
+#ifdef CONFIG_PCI
+ pci_unregister_driver(&ipmi_pci_driver);
+#endif
+
+ mutex_lock(&smi_infos_lock);
+ list_for_each_entry_safe(e, tmp_e, &smi_infos, link)
+ cleanup_one_si(e);
+ mutex_unlock(&smi_infos_lock);
+
+ driver_unregister(&ipmi_driver);
}
module_exit(cleanup_ipmi_si);
MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Corey Minyard <minyard@mvista.com>");
+MODULE_DESCRIPTION("Interface to the IPMI driver for the KCS, SMIC, and BT system interfaces.");
git://git.onelab.eu / linux-2.6.git / blobdiff