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FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
| Current File : //sys/amd64/compile/hs32/modules/usr/src/sys/modules/ata/atapicd/@/dev/ipmi/ipmi.c |
/*-
* Copyright (c) 2006 IronPort Systems Inc. <ambrisko@ironport.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: release/9.1.0/sys/dev/ipmi/ipmi.c 220614 2011-04-14 07:14:22Z ru $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/condvar.h>
#include <sys/conf.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/module.h>
#include <sys/poll.h>
#include <sys/rman.h>
#include <sys/selinfo.h>
#include <sys/sysctl.h>
#include <sys/watchdog.h>
#ifdef LOCAL_MODULE
#include <ipmi.h>
#include <ipmivars.h>
#else
#include <sys/ipmi.h>
#include <dev/ipmi/ipmivars.h>
#endif
#ifdef IPMB
static int ipmi_ipmb_checksum(u_char, int);
static int ipmi_ipmb_send_message(device_t, u_char, u_char, u_char,
u_char, u_char, int)
#endif
static d_ioctl_t ipmi_ioctl;
static d_poll_t ipmi_poll;
static d_open_t ipmi_open;
static void ipmi_dtor(void *arg);
int ipmi_attached = 0;
static int on = 1;
SYSCTL_NODE(_hw, OID_AUTO, ipmi, CTLFLAG_RD, 0, "IPMI driver parameters");
SYSCTL_INT(_hw_ipmi, OID_AUTO, on, CTLFLAG_RW,
&on, 0, "");
static struct cdevsw ipmi_cdevsw = {
.d_version = D_VERSION,
.d_open = ipmi_open,
.d_ioctl = ipmi_ioctl,
.d_poll = ipmi_poll,
.d_name = "ipmi",
};
MALLOC_DEFINE(M_IPMI, "ipmi", "ipmi");
static int
ipmi_open(struct cdev *cdev, int flags, int fmt, struct thread *td)
{
struct ipmi_device *dev;
struct ipmi_softc *sc;
int error;
if (!on)
return (ENOENT);
/* Initialize the per file descriptor data. */
dev = malloc(sizeof(struct ipmi_device), M_IPMI, M_WAITOK | M_ZERO);
error = devfs_set_cdevpriv(dev, ipmi_dtor);
if (error) {
free(dev, M_IPMI);
return (error);
}
sc = cdev->si_drv1;
TAILQ_INIT(&dev->ipmi_completed_requests);
dev->ipmi_address = IPMI_BMC_SLAVE_ADDR;
dev->ipmi_lun = IPMI_BMC_SMS_LUN;
dev->ipmi_softc = sc;
IPMI_LOCK(sc);
sc->ipmi_opened++;
IPMI_UNLOCK(sc);
return (0);
}
static int
ipmi_poll(struct cdev *cdev, int poll_events, struct thread *td)
{
struct ipmi_device *dev;
struct ipmi_softc *sc;
int revents = 0;
if (devfs_get_cdevpriv((void **)&dev))
return (0);
sc = cdev->si_drv1;
IPMI_LOCK(sc);
if (poll_events & (POLLIN | POLLRDNORM)) {
if (!TAILQ_EMPTY(&dev->ipmi_completed_requests))
revents |= poll_events & (POLLIN | POLLRDNORM);
if (dev->ipmi_requests == 0)
revents |= POLLERR;
}
if (revents == 0) {
if (poll_events & (POLLIN | POLLRDNORM))
selrecord(td, &dev->ipmi_select);
}
IPMI_UNLOCK(sc);
return (revents);
}
static void
ipmi_purge_completed_requests(struct ipmi_device *dev)
{
struct ipmi_request *req;
while (!TAILQ_EMPTY(&dev->ipmi_completed_requests)) {
req = TAILQ_FIRST(&dev->ipmi_completed_requests);
TAILQ_REMOVE(&dev->ipmi_completed_requests, req, ir_link);
dev->ipmi_requests--;
ipmi_free_request(req);
}
}
static void
ipmi_dtor(void *arg)
{
struct ipmi_request *req, *nreq;
struct ipmi_device *dev;
struct ipmi_softc *sc;
dev = arg;
sc = dev->ipmi_softc;
IPMI_LOCK(sc);
if (dev->ipmi_requests) {
/* Throw away any pending requests for this device. */
TAILQ_FOREACH_SAFE(req, &sc->ipmi_pending_requests, ir_link,
nreq) {
if (req->ir_owner == dev) {
TAILQ_REMOVE(&sc->ipmi_pending_requests, req,
ir_link);
dev->ipmi_requests--;
ipmi_free_request(req);
}
}
/* Throw away any pending completed requests for this device. */
ipmi_purge_completed_requests(dev);
/*
* If we still have outstanding requests, they must be stuck
* in an interface driver, so wait for those to drain.
*/
dev->ipmi_closing = 1;
while (dev->ipmi_requests > 0) {
msleep(&dev->ipmi_requests, &sc->ipmi_lock, PWAIT,
"ipmidrain", 0);
ipmi_purge_completed_requests(dev);
}
}
sc->ipmi_opened--;
IPMI_UNLOCK(sc);
/* Cleanup. */
free(dev, M_IPMI);
}
#ifdef IPMB
static int
ipmi_ipmb_checksum(u_char *data, int len)
{
u_char sum = 0;
for (; len; len--) {
sum += *data++;
}
return (-sum);
}
/* XXX: Needs work */
static int
ipmi_ipmb_send_message(device_t dev, u_char channel, u_char netfn,
u_char command, u_char seq, u_char *data, int data_len)
{
struct ipmi_softc *sc = device_get_softc(dev);
struct ipmi_request *req;
u_char slave_addr = 0x52;
int error;
req = ipmi_alloc_driver_request(IPMI_ADDR(IPMI_APP_REQUEST, 0),
IPMI_SEND_MSG, data_len + 8, 0);
req->ir_request[0] = channel;
req->ir_request[1] = slave_addr;
req->ir_request[2] = IPMI_ADDR(netfn, 0);
req->ir_request[3] = ipmi_ipmb_checksum(&req->ir_request[1], 2);
req->ir_request[4] = sc->ipmi_address;
req->ir_request[5] = IPMI_ADDR(seq, sc->ipmi_lun);
req->ir_request[6] = command;
bcopy(data, &req->ir_request[7], data_len);
temp[data_len + 7] = ipmi_ipmb_checksum(&req->ir_request[4],
data_len + 3);
ipmi_submit_driver_request(sc, req);
error = req->ir_error;
ipmi_free_request(req);
return (error);
}
static int
ipmi_handle_attn(struct ipmi_softc *sc)
{
struct ipmi_request *req;
int error;
device_printf(sc->ipmi_dev, "BMC has a message\n");
req = ipmi_alloc_driver_request(IPMI_ADDR(IPMI_APP_REQUEST, 0),
IPMI_GET_MSG_FLAGS, 0, 1);
ipmi_submit_driver_request(sc, req);
if (req->ir_error == 0 && req->ir_compcode == 0) {
if (req->ir_reply[0] & IPMI_MSG_BUFFER_FULL) {
device_printf(sc->ipmi_dev, "message buffer full");
}
if (req->ir_reply[0] & IPMI_WDT_PRE_TIMEOUT) {
device_printf(sc->ipmi_dev,
"watchdog about to go off");
}
if (req->ir_reply[0] & IPMI_MSG_AVAILABLE) {
ipmi_free_request(req);
req = ipmi_alloc_driver_request(
IPMI_ADDR(IPMI_APP_REQUEST, 0), IPMI_GET_MSG, 0,
16);
device_printf(sc->ipmi_dev, "throw out message ");
dump_buf(temp, 16);
}
}
error = req->ir_error;
ipmi_free_request(req);
return (error);
}
#endif
#ifdef IPMICTL_SEND_COMMAND_32
#define PTRIN(p) ((void *)(uintptr_t)(p))
#define PTROUT(p) ((uintptr_t)(p))
#endif
static int
ipmi_ioctl(struct cdev *cdev, u_long cmd, caddr_t data,
int flags, struct thread *td)
{
struct ipmi_softc *sc;
struct ipmi_device *dev;
struct ipmi_request *kreq;
struct ipmi_req *req = (struct ipmi_req *)data;
struct ipmi_recv *recv = (struct ipmi_recv *)data;
struct ipmi_addr addr;
#ifdef IPMICTL_SEND_COMMAND_32
struct ipmi_req32 *req32 = (struct ipmi_req32 *)data;
struct ipmi_recv32 *recv32 = (struct ipmi_recv32 *)data;
union {
struct ipmi_req req;
struct ipmi_recv recv;
} thunk32;
#endif
int error, len;
error = devfs_get_cdevpriv((void **)&dev);
if (error)
return (error);
sc = cdev->si_drv1;
#ifdef IPMICTL_SEND_COMMAND_32
/* Convert 32-bit structures to native. */
switch (cmd) {
case IPMICTL_SEND_COMMAND_32:
req = &thunk32.req;
req->addr = PTRIN(req32->addr);
req->addr_len = req32->addr_len;
req->msgid = req32->msgid;
req->msg.netfn = req32->msg.netfn;
req->msg.cmd = req32->msg.cmd;
req->msg.data_len = req32->msg.data_len;
req->msg.data = PTRIN(req32->msg.data);
break;
case IPMICTL_RECEIVE_MSG_TRUNC_32:
case IPMICTL_RECEIVE_MSG_32:
recv = &thunk32.recv;
recv->addr = PTRIN(recv32->addr);
recv->addr_len = recv32->addr_len;
recv->msg.data_len = recv32->msg.data_len;
recv->msg.data = PTRIN(recv32->msg.data);
break;
}
#endif
switch (cmd) {
#ifdef IPMICTL_SEND_COMMAND_32
case IPMICTL_SEND_COMMAND_32:
#endif
case IPMICTL_SEND_COMMAND:
/*
* XXX: Need to add proper handling of this.
*/
error = copyin(req->addr, &addr, sizeof(addr));
if (error)
return (error);
IPMI_LOCK(sc);
/* clear out old stuff in queue of stuff done */
/* XXX: This seems odd. */
while ((kreq = TAILQ_FIRST(&dev->ipmi_completed_requests))) {
TAILQ_REMOVE(&dev->ipmi_completed_requests, kreq,
ir_link);
dev->ipmi_requests--;
ipmi_free_request(kreq);
}
IPMI_UNLOCK(sc);
kreq = ipmi_alloc_request(dev, req->msgid,
IPMI_ADDR(req->msg.netfn, 0), req->msg.cmd,
req->msg.data_len, IPMI_MAX_RX);
error = copyin(req->msg.data, kreq->ir_request,
req->msg.data_len);
if (error) {
ipmi_free_request(kreq);
return (error);
}
IPMI_LOCK(sc);
dev->ipmi_requests++;
error = sc->ipmi_enqueue_request(sc, kreq);
IPMI_UNLOCK(sc);
if (error)
return (error);
break;
#ifdef IPMICTL_SEND_COMMAND_32
case IPMICTL_RECEIVE_MSG_TRUNC_32:
case IPMICTL_RECEIVE_MSG_32:
#endif
case IPMICTL_RECEIVE_MSG_TRUNC:
case IPMICTL_RECEIVE_MSG:
error = copyin(recv->addr, &addr, sizeof(addr));
if (error)
return (error);
IPMI_LOCK(sc);
kreq = TAILQ_FIRST(&dev->ipmi_completed_requests);
if (kreq == NULL) {
IPMI_UNLOCK(sc);
return (EAGAIN);
}
addr.channel = IPMI_BMC_CHANNEL;
/* XXX */
recv->recv_type = IPMI_RESPONSE_RECV_TYPE;
recv->msgid = kreq->ir_msgid;
recv->msg.netfn = IPMI_REPLY_ADDR(kreq->ir_addr) >> 2;
recv->msg.cmd = kreq->ir_command;
error = kreq->ir_error;
if (error) {
TAILQ_REMOVE(&dev->ipmi_completed_requests, kreq,
ir_link);
dev->ipmi_requests--;
IPMI_UNLOCK(sc);
ipmi_free_request(kreq);
return (error);
}
len = kreq->ir_replylen + 1;
if (recv->msg.data_len < len &&
(cmd == IPMICTL_RECEIVE_MSG
#ifdef IPMICTL_RECEIVE_MSG_32
|| cmd == IPMICTL_RECEIVE_MSG_32
#endif
)) {
IPMI_UNLOCK(sc);
return (EMSGSIZE);
}
TAILQ_REMOVE(&dev->ipmi_completed_requests, kreq, ir_link);
dev->ipmi_requests--;
IPMI_UNLOCK(sc);
len = min(recv->msg.data_len, len);
recv->msg.data_len = len;
error = copyout(&addr, recv->addr,sizeof(addr));
if (error == 0)
error = copyout(&kreq->ir_compcode, recv->msg.data, 1);
if (error == 0)
error = copyout(kreq->ir_reply, recv->msg.data + 1,
len - 1);
ipmi_free_request(kreq);
if (error)
return (error);
break;
case IPMICTL_SET_MY_ADDRESS_CMD:
IPMI_LOCK(sc);
dev->ipmi_address = *(int*)data;
IPMI_UNLOCK(sc);
break;
case IPMICTL_GET_MY_ADDRESS_CMD:
IPMI_LOCK(sc);
*(int*)data = dev->ipmi_address;
IPMI_UNLOCK(sc);
break;
case IPMICTL_SET_MY_LUN_CMD:
IPMI_LOCK(sc);
dev->ipmi_lun = *(int*)data & 0x3;
IPMI_UNLOCK(sc);
break;
case IPMICTL_GET_MY_LUN_CMD:
IPMI_LOCK(sc);
*(int*)data = dev->ipmi_lun;
IPMI_UNLOCK(sc);
break;
case IPMICTL_SET_GETS_EVENTS_CMD:
/*
device_printf(sc->ipmi_dev,
"IPMICTL_SET_GETS_EVENTS_CMD NA\n");
*/
break;
case IPMICTL_REGISTER_FOR_CMD:
case IPMICTL_UNREGISTER_FOR_CMD:
return (EOPNOTSUPP);
default:
device_printf(sc->ipmi_dev, "Unknown IOCTL %lX\n", cmd);
return (ENOIOCTL);
}
#ifdef IPMICTL_SEND_COMMAND_32
/* Update changed fields in 32-bit structures. */
switch (cmd) {
case IPMICTL_RECEIVE_MSG_TRUNC_32:
case IPMICTL_RECEIVE_MSG_32:
recv32->recv_type = recv->recv_type;
recv32->msgid = recv->msgid;
recv32->msg.netfn = recv->msg.netfn;
recv32->msg.cmd = recv->msg.cmd;
recv32->msg.data_len = recv->msg.data_len;
break;
}
#endif
return (0);
}
/*
* Request management.
*/
/* Allocate a new request with request and reply buffers. */
struct ipmi_request *
ipmi_alloc_request(struct ipmi_device *dev, long msgid, uint8_t addr,
uint8_t command, size_t requestlen, size_t replylen)
{
struct ipmi_request *req;
req = malloc(sizeof(struct ipmi_request) + requestlen + replylen,
M_IPMI, M_WAITOK | M_ZERO);
req->ir_owner = dev;
req->ir_msgid = msgid;
req->ir_addr = addr;
req->ir_command = command;
if (requestlen) {
req->ir_request = (char *)&req[1];
req->ir_requestlen = requestlen;
}
if (replylen) {
req->ir_reply = (char *)&req[1] + requestlen;
req->ir_replybuflen = replylen;
}
return (req);
}
/* Free a request no longer in use. */
void
ipmi_free_request(struct ipmi_request *req)
{
free(req, M_IPMI);
}
/* Store a processed request on the appropriate completion queue. */
void
ipmi_complete_request(struct ipmi_softc *sc, struct ipmi_request *req)
{
struct ipmi_device *dev;
IPMI_LOCK_ASSERT(sc);
/*
* Anonymous requests (from inside the driver) always have a
* waiter that we awaken.
*/
if (req->ir_owner == NULL)
wakeup(req);
else {
dev = req->ir_owner;
TAILQ_INSERT_TAIL(&dev->ipmi_completed_requests, req, ir_link);
selwakeup(&dev->ipmi_select);
if (dev->ipmi_closing)
wakeup(&dev->ipmi_requests);
}
}
/* Enqueue an internal driver request and wait until it is completed. */
int
ipmi_submit_driver_request(struct ipmi_softc *sc, struct ipmi_request *req,
int timo)
{
int error;
IPMI_LOCK(sc);
error = sc->ipmi_enqueue_request(sc, req);
if (error == 0)
error = msleep(req, &sc->ipmi_lock, 0, "ipmireq", timo);
if (error == 0)
error = req->ir_error;
IPMI_UNLOCK(sc);
return (error);
}
/*
* Helper routine for polled system interfaces that use
* ipmi_polled_enqueue_request() to queue requests. This request
* waits until there is a pending request and then returns the first
* request. If the driver is shutting down, it returns NULL.
*/
struct ipmi_request *
ipmi_dequeue_request(struct ipmi_softc *sc)
{
struct ipmi_request *req;
IPMI_LOCK_ASSERT(sc);
while (!sc->ipmi_detaching && TAILQ_EMPTY(&sc->ipmi_pending_requests))
cv_wait(&sc->ipmi_request_added, &sc->ipmi_lock);
if (sc->ipmi_detaching)
return (NULL);
req = TAILQ_FIRST(&sc->ipmi_pending_requests);
TAILQ_REMOVE(&sc->ipmi_pending_requests, req, ir_link);
return (req);
}
/* Default implementation of ipmi_enqueue_request() for polled interfaces. */
int
ipmi_polled_enqueue_request(struct ipmi_softc *sc, struct ipmi_request *req)
{
IPMI_LOCK_ASSERT(sc);
TAILQ_INSERT_TAIL(&sc->ipmi_pending_requests, req, ir_link);
cv_signal(&sc->ipmi_request_added);
return (0);
}
/*
* Watchdog event handler.
*/
static int
ipmi_set_watchdog(struct ipmi_softc *sc, unsigned int sec)
{
struct ipmi_request *req;
int error;
if (sec > 0xffff / 10)
return (EINVAL);
req = ipmi_alloc_driver_request(IPMI_ADDR(IPMI_APP_REQUEST, 0),
IPMI_SET_WDOG, 6, 0);
if (sec) {
req->ir_request[0] = IPMI_SET_WD_TIMER_DONT_STOP
| IPMI_SET_WD_TIMER_SMS_OS;
req->ir_request[1] = IPMI_SET_WD_ACTION_RESET;
req->ir_request[2] = 0;
req->ir_request[3] = 0; /* Timer use */
req->ir_request[4] = (sec * 10) & 0xff;
req->ir_request[5] = (sec * 10) >> 8;
} else {
req->ir_request[0] = IPMI_SET_WD_TIMER_SMS_OS;
req->ir_request[1] = 0;
req->ir_request[2] = 0;
req->ir_request[3] = 0; /* Timer use */
req->ir_request[4] = 0;
req->ir_request[5] = 0;
}
error = ipmi_submit_driver_request(sc, req, 0);
if (error)
device_printf(sc->ipmi_dev, "Failed to set watchdog\n");
else if (sec) {
ipmi_free_request(req);
req = ipmi_alloc_driver_request(IPMI_ADDR(IPMI_APP_REQUEST, 0),
IPMI_RESET_WDOG, 0, 0);
error = ipmi_submit_driver_request(sc, req, 0);
if (error)
device_printf(sc->ipmi_dev,
"Failed to reset watchdog\n");
}
ipmi_free_request(req);
return (error);
/*
dump_watchdog(sc);
*/
}
static void
ipmi_wd_event(void *arg, unsigned int cmd, int *error)
{
struct ipmi_softc *sc = arg;
unsigned int timeout;
int e;
cmd &= WD_INTERVAL;
if (cmd > 0 && cmd <= 63) {
timeout = ((uint64_t)1 << cmd) / 1000000000;
if (timeout == 0)
timeout = 1;
e = ipmi_set_watchdog(sc, timeout);
if (e == 0)
*error = 0;
else
(void)ipmi_set_watchdog(sc, 0);
} else {
e = ipmi_set_watchdog(sc, 0);
if (e != 0 && cmd == 0)
*error = EOPNOTSUPP;
}
}
static void
ipmi_startup(void *arg)
{
struct ipmi_softc *sc = arg;
struct ipmi_request *req;
device_t dev;
int error, i;
config_intrhook_disestablish(&sc->ipmi_ich);
dev = sc->ipmi_dev;
/* Initialize interface-independent state. */
mtx_init(&sc->ipmi_lock, device_get_nameunit(dev), "ipmi", MTX_DEF);
cv_init(&sc->ipmi_request_added, "ipmireq");
TAILQ_INIT(&sc->ipmi_pending_requests);
/* Initialize interface-dependent state. */
error = sc->ipmi_startup(sc);
if (error) {
device_printf(dev, "Failed to initialize interface: %d\n",
error);
return;
}
/* Send a GET_DEVICE_ID request. */
req = ipmi_alloc_driver_request(IPMI_ADDR(IPMI_APP_REQUEST, 0),
IPMI_GET_DEVICE_ID, 0, 15);
error = ipmi_submit_driver_request(sc, req, MAX_TIMEOUT);
if (error == EWOULDBLOCK) {
device_printf(dev, "Timed out waiting for GET_DEVICE_ID\n");
ipmi_free_request(req);
return;
} else if (error) {
device_printf(dev, "Failed GET_DEVICE_ID: %d\n", error);
ipmi_free_request(req);
return;
} else if (req->ir_compcode != 0) {
device_printf(dev,
"Bad completion code for GET_DEVICE_ID: %d\n",
req->ir_compcode);
ipmi_free_request(req);
return;
} else if (req->ir_replylen < 5) {
device_printf(dev, "Short reply for GET_DEVICE_ID: %d\n",
req->ir_replylen);
ipmi_free_request(req);
return;
}
device_printf(dev, "IPMI device rev. %d, firmware rev. %d.%d%d, "
"version %d.%d\n",
req->ir_reply[1] & 0x0f,
req->ir_reply[2] & 0x7f, req->ir_reply[3] >> 4, req->ir_reply[3] & 0x0f,
req->ir_reply[4] & 0x0f, req->ir_reply[4] >> 4);
ipmi_free_request(req);
req = ipmi_alloc_driver_request(IPMI_ADDR(IPMI_APP_REQUEST, 0),
IPMI_CLEAR_FLAGS, 1, 0);
ipmi_submit_driver_request(sc, req, 0);
/* XXX: Magic numbers */
if (req->ir_compcode == 0xc0) {
device_printf(dev, "Clear flags is busy\n");
}
if (req->ir_compcode == 0xc1) {
device_printf(dev, "Clear flags illegal\n");
}
ipmi_free_request(req);
for (i = 0; i < 8; i++) {
req = ipmi_alloc_driver_request(IPMI_ADDR(IPMI_APP_REQUEST, 0),
IPMI_GET_CHANNEL_INFO, 1, 0);
req->ir_request[0] = i;
ipmi_submit_driver_request(sc, req, 0);
if (req->ir_compcode != 0) {
ipmi_free_request(req);
break;
}
ipmi_free_request(req);
}
device_printf(dev, "Number of channels %d\n", i);
/* probe for watchdog */
req = ipmi_alloc_driver_request(IPMI_ADDR(IPMI_APP_REQUEST, 0),
IPMI_GET_WDOG, 0, 0);
ipmi_submit_driver_request(sc, req, 0);
if (req->ir_compcode == 0x00) {
device_printf(dev, "Attached watchdog\n");
/* register the watchdog event handler */
sc->ipmi_watchdog_tag = EVENTHANDLER_REGISTER(watchdog_list,
ipmi_wd_event, sc, 0);
}
ipmi_free_request(req);
sc->ipmi_cdev = make_dev(&ipmi_cdevsw, device_get_unit(dev),
UID_ROOT, GID_OPERATOR, 0660, "ipmi%d", device_get_unit(dev));
if (sc->ipmi_cdev == NULL) {
device_printf(dev, "Failed to create cdev\n");
return;
}
sc->ipmi_cdev->si_drv1 = sc;
}
int
ipmi_attach(device_t dev)
{
struct ipmi_softc *sc = device_get_softc(dev);
int error;
if (sc->ipmi_irq_res != NULL && sc->ipmi_intr != NULL) {
error = bus_setup_intr(dev, sc->ipmi_irq_res, INTR_TYPE_MISC,
NULL, sc->ipmi_intr, sc, &sc->ipmi_irq);
if (error) {
device_printf(dev, "can't set up interrupt\n");
return (error);
}
}
bzero(&sc->ipmi_ich, sizeof(struct intr_config_hook));
sc->ipmi_ich.ich_func = ipmi_startup;
sc->ipmi_ich.ich_arg = sc;
if (config_intrhook_establish(&sc->ipmi_ich) != 0) {
device_printf(dev, "can't establish configuration hook\n");
return (ENOMEM);
}
ipmi_attached = 1;
return (0);
}
int
ipmi_detach(device_t dev)
{
struct ipmi_softc *sc;
sc = device_get_softc(dev);
/* Fail if there are any open handles. */
IPMI_LOCK(sc);
if (sc->ipmi_opened) {
IPMI_UNLOCK(sc);
return (EBUSY);
}
IPMI_UNLOCK(sc);
if (sc->ipmi_cdev)
destroy_dev(sc->ipmi_cdev);
/* Detach from watchdog handling and turn off watchdog. */
if (sc->ipmi_watchdog_tag) {
EVENTHANDLER_DEREGISTER(watchdog_list, sc->ipmi_watchdog_tag);
ipmi_set_watchdog(sc, 0);
}
/* XXX: should use shutdown callout I think. */
/* If the backend uses a kthread, shut it down. */
IPMI_LOCK(sc);
sc->ipmi_detaching = 1;
if (sc->ipmi_kthread) {
cv_broadcast(&sc->ipmi_request_added);
msleep(sc->ipmi_kthread, &sc->ipmi_lock, 0, "ipmi_wait", 0);
}
IPMI_UNLOCK(sc);
if (sc->ipmi_irq)
bus_teardown_intr(dev, sc->ipmi_irq_res, sc->ipmi_irq);
ipmi_release_resources(dev);
mtx_destroy(&sc->ipmi_lock);
return (0);
}
void
ipmi_release_resources(device_t dev)
{
struct ipmi_softc *sc;
int i;
sc = device_get_softc(dev);
if (sc->ipmi_irq)
bus_teardown_intr(dev, sc->ipmi_irq_res, sc->ipmi_irq);
if (sc->ipmi_irq_res)
bus_release_resource(dev, SYS_RES_IRQ, sc->ipmi_irq_rid,
sc->ipmi_irq_res);
for (i = 0; i < MAX_RES; i++)
if (sc->ipmi_io_res[i])
bus_release_resource(dev, sc->ipmi_io_type,
sc->ipmi_io_rid + i, sc->ipmi_io_res[i]);
}
devclass_t ipmi_devclass;
/* XXX: Why? */
static void
ipmi_unload(void *arg)
{
device_t * devs;
int count;
int i;
if (devclass_get_devices(ipmi_devclass, &devs, &count) != 0)
return;
for (i = 0; i < count; i++)
device_delete_child(device_get_parent(devs[i]), devs[i]);
free(devs, M_TEMP);
}
SYSUNINIT(ipmi_unload, SI_SUB_DRIVERS, SI_ORDER_FIRST, ipmi_unload, NULL);
#ifdef IMPI_DEBUG
static void
dump_buf(u_char *data, int len)
{
char buf[20];
char line[1024];
char temp[30];
int count = 0;
int i=0;
printf("Address %p len %d\n", data, len);
if (len > 256)
len = 256;
line[0] = '\000';
for (; len > 0; len--, data++) {
sprintf(temp, "%02x ", *data);
strcat(line, temp);
if (*data >= ' ' && *data <= '~')
buf[count] = *data;
else if (*data >= 'A' && *data <= 'Z')
buf[count] = *data;
else
buf[count] = '.';
if (++count == 16) {
buf[count] = '\000';
count = 0;
printf(" %3x %s %s\n", i, line, buf);
i+=16;
line[0] = '\000';
}
}
buf[count] = '\000';
for (; count != 16; count++) {
strcat(line, " ");
}
printf(" %3x %s %s\n", i, line, buf);
}
#endif