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1da177e4 LT |
1 | /* |
2 | * ipmi_si.c | |
3 | * | |
4 | * The interface to the IPMI driver for the system interfaces (KCS, SMIC, | |
5 | * BT). | |
6 | * | |
7 | * Author: MontaVista Software, Inc. | |
8 | * Corey Minyard <minyard@mvista.com> | |
9 | * source@mvista.com | |
10 | * | |
11 | * Copyright 2002 MontaVista Software Inc. | |
12 | * | |
13 | * This program is free software; you can redistribute it and/or modify it | |
14 | * under the terms of the GNU General Public License as published by the | |
15 | * Free Software Foundation; either version 2 of the License, or (at your | |
16 | * option) any later version. | |
17 | * | |
18 | * | |
19 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
20 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
21 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. | |
22 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | |
23 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, | |
24 | * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS | |
25 | * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND | |
26 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR | |
27 | * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE | |
28 | * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
29 | * | |
30 | * You should have received a copy of the GNU General Public License along | |
31 | * with this program; if not, write to the Free Software Foundation, Inc., | |
32 | * 675 Mass Ave, Cambridge, MA 02139, USA. | |
33 | */ | |
34 | ||
35 | /* | |
36 | * This file holds the "policy" for the interface to the SMI state | |
37 | * machine. It does the configuration, handles timers and interrupts, | |
38 | * and drives the real SMI state machine. | |
39 | */ | |
40 | ||
1da177e4 LT |
41 | #include <linux/module.h> |
42 | #include <linux/moduleparam.h> | |
43 | #include <asm/system.h> | |
44 | #include <linux/sched.h> | |
45 | #include <linux/timer.h> | |
46 | #include <linux/errno.h> | |
47 | #include <linux/spinlock.h> | |
48 | #include <linux/slab.h> | |
49 | #include <linux/delay.h> | |
50 | #include <linux/list.h> | |
51 | #include <linux/pci.h> | |
52 | #include <linux/ioport.h> | |
ea94027b | 53 | #include <linux/notifier.h> |
b0defcdb | 54 | #include <linux/mutex.h> |
e9a705a0 | 55 | #include <linux/kthread.h> |
1da177e4 | 56 | #include <asm/irq.h> |
1da177e4 LT |
57 | #include <linux/interrupt.h> |
58 | #include <linux/rcupdate.h> | |
59 | #include <linux/ipmi_smi.h> | |
60 | #include <asm/io.h> | |
61 | #include "ipmi_si_sm.h" | |
62 | #include <linux/init.h> | |
b224cd3a | 63 | #include <linux/dmi.h> |
1da177e4 LT |
64 | |
65 | /* Measure times between events in the driver. */ | |
66 | #undef DEBUG_TIMING | |
67 | ||
68 | /* Call every 10 ms. */ | |
69 | #define SI_TIMEOUT_TIME_USEC 10000 | |
70 | #define SI_USEC_PER_JIFFY (1000000/HZ) | |
71 | #define SI_TIMEOUT_JIFFIES (SI_TIMEOUT_TIME_USEC/SI_USEC_PER_JIFFY) | |
72 | #define SI_SHORT_TIMEOUT_USEC 250 /* .25ms when the SM request a | |
73 | short timeout */ | |
74 | ||
75 | enum si_intf_state { | |
76 | SI_NORMAL, | |
77 | SI_GETTING_FLAGS, | |
78 | SI_GETTING_EVENTS, | |
79 | SI_CLEARING_FLAGS, | |
80 | SI_CLEARING_FLAGS_THEN_SET_IRQ, | |
81 | SI_GETTING_MESSAGES, | |
82 | SI_ENABLE_INTERRUPTS1, | |
83 | SI_ENABLE_INTERRUPTS2 | |
84 | /* FIXME - add watchdog stuff. */ | |
85 | }; | |
86 | ||
9dbf68f9 CM |
87 | /* Some BT-specific defines we need here. */ |
88 | #define IPMI_BT_INTMASK_REG 2 | |
89 | #define IPMI_BT_INTMASK_CLEAR_IRQ_BIT 2 | |
90 | #define IPMI_BT_INTMASK_ENABLE_IRQ_BIT 1 | |
91 | ||
1da177e4 LT |
92 | enum si_type { |
93 | SI_KCS, SI_SMIC, SI_BT | |
94 | }; | |
b0defcdb | 95 | static char *si_to_str[] = { "KCS", "SMIC", "BT" }; |
1da177e4 | 96 | |
50c812b2 CM |
97 | #define DEVICE_NAME "ipmi_si" |
98 | ||
99 | static struct device_driver ipmi_driver = | |
100 | { | |
101 | .name = DEVICE_NAME, | |
102 | .bus = &platform_bus_type | |
103 | }; | |
3ae0e0f9 | 104 | |
1da177e4 LT |
105 | struct smi_info |
106 | { | |
a9a2c44f | 107 | int intf_num; |
1da177e4 LT |
108 | ipmi_smi_t intf; |
109 | struct si_sm_data *si_sm; | |
110 | struct si_sm_handlers *handlers; | |
111 | enum si_type si_type; | |
112 | spinlock_t si_lock; | |
113 | spinlock_t msg_lock; | |
114 | struct list_head xmit_msgs; | |
115 | struct list_head hp_xmit_msgs; | |
116 | struct ipmi_smi_msg *curr_msg; | |
117 | enum si_intf_state si_state; | |
118 | ||
119 | /* Used to handle the various types of I/O that can occur with | |
120 | IPMI */ | |
121 | struct si_sm_io io; | |
122 | int (*io_setup)(struct smi_info *info); | |
123 | void (*io_cleanup)(struct smi_info *info); | |
124 | int (*irq_setup)(struct smi_info *info); | |
125 | void (*irq_cleanup)(struct smi_info *info); | |
126 | unsigned int io_size; | |
b0defcdb CM |
127 | char *addr_source; /* ACPI, PCI, SMBIOS, hardcode, default. */ |
128 | void (*addr_source_cleanup)(struct smi_info *info); | |
129 | void *addr_source_data; | |
1da177e4 | 130 | |
3ae0e0f9 CM |
131 | /* Per-OEM handler, called from handle_flags(). |
132 | Returns 1 when handle_flags() needs to be re-run | |
133 | or 0 indicating it set si_state itself. | |
134 | */ | |
135 | int (*oem_data_avail_handler)(struct smi_info *smi_info); | |
136 | ||
1da177e4 LT |
137 | /* Flags from the last GET_MSG_FLAGS command, used when an ATTN |
138 | is set to hold the flags until we are done handling everything | |
139 | from the flags. */ | |
140 | #define RECEIVE_MSG_AVAIL 0x01 | |
141 | #define EVENT_MSG_BUFFER_FULL 0x02 | |
142 | #define WDT_PRE_TIMEOUT_INT 0x08 | |
3ae0e0f9 CM |
143 | #define OEM0_DATA_AVAIL 0x20 |
144 | #define OEM1_DATA_AVAIL 0x40 | |
145 | #define OEM2_DATA_AVAIL 0x80 | |
146 | #define OEM_DATA_AVAIL (OEM0_DATA_AVAIL | \ | |
147 | OEM1_DATA_AVAIL | \ | |
148 | OEM2_DATA_AVAIL) | |
1da177e4 LT |
149 | unsigned char msg_flags; |
150 | ||
151 | /* If set to true, this will request events the next time the | |
152 | state machine is idle. */ | |
153 | atomic_t req_events; | |
154 | ||
155 | /* If true, run the state machine to completion on every send | |
156 | call. Generally used after a panic to make sure stuff goes | |
157 | out. */ | |
158 | int run_to_completion; | |
159 | ||
160 | /* The I/O port of an SI interface. */ | |
161 | int port; | |
162 | ||
163 | /* The space between start addresses of the two ports. For | |
164 | instance, if the first port is 0xca2 and the spacing is 4, then | |
165 | the second port is 0xca6. */ | |
166 | unsigned int spacing; | |
167 | ||
168 | /* zero if no irq; */ | |
169 | int irq; | |
170 | ||
171 | /* The timer for this si. */ | |
172 | struct timer_list si_timer; | |
173 | ||
174 | /* The time (in jiffies) the last timeout occurred at. */ | |
175 | unsigned long last_timeout_jiffies; | |
176 | ||
177 | /* Used to gracefully stop the timer without race conditions. */ | |
a9a2c44f | 178 | atomic_t stop_operation; |
1da177e4 LT |
179 | |
180 | /* The driver will disable interrupts when it gets into a | |
181 | situation where it cannot handle messages due to lack of | |
182 | memory. Once that situation clears up, it will re-enable | |
183 | interrupts. */ | |
184 | int interrupt_disabled; | |
185 | ||
50c812b2 | 186 | /* From the get device id response... */ |
3ae0e0f9 | 187 | struct ipmi_device_id device_id; |
1da177e4 | 188 | |
50c812b2 CM |
189 | /* Driver model stuff. */ |
190 | struct device *dev; | |
191 | struct platform_device *pdev; | |
192 | ||
193 | /* True if we allocated the device, false if it came from | |
194 | * someplace else (like PCI). */ | |
195 | int dev_registered; | |
196 | ||
1da177e4 LT |
197 | /* Slave address, could be reported from DMI. */ |
198 | unsigned char slave_addr; | |
199 | ||
200 | /* Counters and things for the proc filesystem. */ | |
201 | spinlock_t count_lock; | |
202 | unsigned long short_timeouts; | |
203 | unsigned long long_timeouts; | |
204 | unsigned long timeout_restarts; | |
205 | unsigned long idles; | |
206 | unsigned long interrupts; | |
207 | unsigned long attentions; | |
208 | unsigned long flag_fetches; | |
209 | unsigned long hosed_count; | |
210 | unsigned long complete_transactions; | |
211 | unsigned long events; | |
212 | unsigned long watchdog_pretimeouts; | |
213 | unsigned long incoming_messages; | |
a9a2c44f | 214 | |
e9a705a0 | 215 | struct task_struct *thread; |
b0defcdb CM |
216 | |
217 | struct list_head link; | |
1da177e4 LT |
218 | }; |
219 | ||
a51f4a81 CM |
220 | #define SI_MAX_PARMS 4 |
221 | ||
222 | static int force_kipmid[SI_MAX_PARMS]; | |
223 | static int num_force_kipmid; | |
224 | ||
b0defcdb CM |
225 | static int try_smi_init(struct smi_info *smi); |
226 | ||
e041c683 | 227 | static ATOMIC_NOTIFIER_HEAD(xaction_notifier_list); |
ea94027b CM |
228 | static int register_xaction_notifier(struct notifier_block * nb) |
229 | { | |
e041c683 | 230 | return atomic_notifier_chain_register(&xaction_notifier_list, nb); |
ea94027b CM |
231 | } |
232 | ||
1da177e4 LT |
233 | static void deliver_recv_msg(struct smi_info *smi_info, |
234 | struct ipmi_smi_msg *msg) | |
235 | { | |
236 | /* Deliver the message to the upper layer with the lock | |
237 | released. */ | |
238 | spin_unlock(&(smi_info->si_lock)); | |
239 | ipmi_smi_msg_received(smi_info->intf, msg); | |
240 | spin_lock(&(smi_info->si_lock)); | |
241 | } | |
242 | ||
243 | static void return_hosed_msg(struct smi_info *smi_info) | |
244 | { | |
245 | struct ipmi_smi_msg *msg = smi_info->curr_msg; | |
246 | ||
247 | /* Make it a reponse */ | |
248 | msg->rsp[0] = msg->data[0] | 4; | |
249 | msg->rsp[1] = msg->data[1]; | |
250 | msg->rsp[2] = 0xFF; /* Unknown error. */ | |
251 | msg->rsp_size = 3; | |
252 | ||
253 | smi_info->curr_msg = NULL; | |
254 | deliver_recv_msg(smi_info, msg); | |
255 | } | |
256 | ||
257 | static enum si_sm_result start_next_msg(struct smi_info *smi_info) | |
258 | { | |
259 | int rv; | |
260 | struct list_head *entry = NULL; | |
261 | #ifdef DEBUG_TIMING | |
262 | struct timeval t; | |
263 | #endif | |
264 | ||
265 | /* No need to save flags, we aleady have interrupts off and we | |
266 | already hold the SMI lock. */ | |
267 | spin_lock(&(smi_info->msg_lock)); | |
268 | ||
269 | /* Pick the high priority queue first. */ | |
b0defcdb | 270 | if (!list_empty(&(smi_info->hp_xmit_msgs))) { |
1da177e4 | 271 | entry = smi_info->hp_xmit_msgs.next; |
b0defcdb | 272 | } else if (!list_empty(&(smi_info->xmit_msgs))) { |
1da177e4 LT |
273 | entry = smi_info->xmit_msgs.next; |
274 | } | |
275 | ||
b0defcdb | 276 | if (!entry) { |
1da177e4 LT |
277 | smi_info->curr_msg = NULL; |
278 | rv = SI_SM_IDLE; | |
279 | } else { | |
280 | int err; | |
281 | ||
282 | list_del(entry); | |
283 | smi_info->curr_msg = list_entry(entry, | |
284 | struct ipmi_smi_msg, | |
285 | link); | |
286 | #ifdef DEBUG_TIMING | |
287 | do_gettimeofday(&t); | |
288 | printk("**Start2: %d.%9.9d\n", t.tv_sec, t.tv_usec); | |
289 | #endif | |
e041c683 AS |
290 | err = atomic_notifier_call_chain(&xaction_notifier_list, |
291 | 0, smi_info); | |
ea94027b CM |
292 | if (err & NOTIFY_STOP_MASK) { |
293 | rv = SI_SM_CALL_WITHOUT_DELAY; | |
294 | goto out; | |
295 | } | |
1da177e4 LT |
296 | err = smi_info->handlers->start_transaction( |
297 | smi_info->si_sm, | |
298 | smi_info->curr_msg->data, | |
299 | smi_info->curr_msg->data_size); | |
300 | if (err) { | |
301 | return_hosed_msg(smi_info); | |
302 | } | |
303 | ||
304 | rv = SI_SM_CALL_WITHOUT_DELAY; | |
305 | } | |
ea94027b | 306 | out: |
1da177e4 LT |
307 | spin_unlock(&(smi_info->msg_lock)); |
308 | ||
309 | return rv; | |
310 | } | |
311 | ||
312 | static void start_enable_irq(struct smi_info *smi_info) | |
313 | { | |
314 | unsigned char msg[2]; | |
315 | ||
316 | /* If we are enabling interrupts, we have to tell the | |
317 | BMC to use them. */ | |
318 | msg[0] = (IPMI_NETFN_APP_REQUEST << 2); | |
319 | msg[1] = IPMI_GET_BMC_GLOBAL_ENABLES_CMD; | |
320 | ||
321 | smi_info->handlers->start_transaction(smi_info->si_sm, msg, 2); | |
322 | smi_info->si_state = SI_ENABLE_INTERRUPTS1; | |
323 | } | |
324 | ||
325 | static void start_clear_flags(struct smi_info *smi_info) | |
326 | { | |
327 | unsigned char msg[3]; | |
328 | ||
329 | /* Make sure the watchdog pre-timeout flag is not set at startup. */ | |
330 | msg[0] = (IPMI_NETFN_APP_REQUEST << 2); | |
331 | msg[1] = IPMI_CLEAR_MSG_FLAGS_CMD; | |
332 | msg[2] = WDT_PRE_TIMEOUT_INT; | |
333 | ||
334 | smi_info->handlers->start_transaction(smi_info->si_sm, msg, 3); | |
335 | smi_info->si_state = SI_CLEARING_FLAGS; | |
336 | } | |
337 | ||
338 | /* When we have a situtaion where we run out of memory and cannot | |
339 | allocate messages, we just leave them in the BMC and run the system | |
340 | polled until we can allocate some memory. Once we have some | |
341 | memory, we will re-enable the interrupt. */ | |
342 | static inline void disable_si_irq(struct smi_info *smi_info) | |
343 | { | |
b0defcdb | 344 | if ((smi_info->irq) && (!smi_info->interrupt_disabled)) { |
1da177e4 LT |
345 | disable_irq_nosync(smi_info->irq); |
346 | smi_info->interrupt_disabled = 1; | |
347 | } | |
348 | } | |
349 | ||
350 | static inline void enable_si_irq(struct smi_info *smi_info) | |
351 | { | |
352 | if ((smi_info->irq) && (smi_info->interrupt_disabled)) { | |
353 | enable_irq(smi_info->irq); | |
354 | smi_info->interrupt_disabled = 0; | |
355 | } | |
356 | } | |
357 | ||
358 | static void handle_flags(struct smi_info *smi_info) | |
359 | { | |
3ae0e0f9 | 360 | retry: |
1da177e4 LT |
361 | if (smi_info->msg_flags & WDT_PRE_TIMEOUT_INT) { |
362 | /* Watchdog pre-timeout */ | |
363 | spin_lock(&smi_info->count_lock); | |
364 | smi_info->watchdog_pretimeouts++; | |
365 | spin_unlock(&smi_info->count_lock); | |
366 | ||
367 | start_clear_flags(smi_info); | |
368 | smi_info->msg_flags &= ~WDT_PRE_TIMEOUT_INT; | |
369 | spin_unlock(&(smi_info->si_lock)); | |
370 | ipmi_smi_watchdog_pretimeout(smi_info->intf); | |
371 | spin_lock(&(smi_info->si_lock)); | |
372 | } else if (smi_info->msg_flags & RECEIVE_MSG_AVAIL) { | |
373 | /* Messages available. */ | |
374 | smi_info->curr_msg = ipmi_alloc_smi_msg(); | |
b0defcdb | 375 | if (!smi_info->curr_msg) { |
1da177e4 LT |
376 | disable_si_irq(smi_info); |
377 | smi_info->si_state = SI_NORMAL; | |
378 | return; | |
379 | } | |
380 | enable_si_irq(smi_info); | |
381 | ||
382 | smi_info->curr_msg->data[0] = (IPMI_NETFN_APP_REQUEST << 2); | |
383 | smi_info->curr_msg->data[1] = IPMI_GET_MSG_CMD; | |
384 | smi_info->curr_msg->data_size = 2; | |
385 | ||
386 | smi_info->handlers->start_transaction( | |
387 | smi_info->si_sm, | |
388 | smi_info->curr_msg->data, | |
389 | smi_info->curr_msg->data_size); | |
390 | smi_info->si_state = SI_GETTING_MESSAGES; | |
391 | } else if (smi_info->msg_flags & EVENT_MSG_BUFFER_FULL) { | |
392 | /* Events available. */ | |
393 | smi_info->curr_msg = ipmi_alloc_smi_msg(); | |
b0defcdb | 394 | if (!smi_info->curr_msg) { |
1da177e4 LT |
395 | disable_si_irq(smi_info); |
396 | smi_info->si_state = SI_NORMAL; | |
397 | return; | |
398 | } | |
399 | enable_si_irq(smi_info); | |
400 | ||
401 | smi_info->curr_msg->data[0] = (IPMI_NETFN_APP_REQUEST << 2); | |
402 | smi_info->curr_msg->data[1] = IPMI_READ_EVENT_MSG_BUFFER_CMD; | |
403 | smi_info->curr_msg->data_size = 2; | |
404 | ||
405 | smi_info->handlers->start_transaction( | |
406 | smi_info->si_sm, | |
407 | smi_info->curr_msg->data, | |
408 | smi_info->curr_msg->data_size); | |
409 | smi_info->si_state = SI_GETTING_EVENTS; | |
4064d5ef CM |
410 | } else if (smi_info->msg_flags & OEM_DATA_AVAIL && |
411 | smi_info->oem_data_avail_handler) { | |
412 | if (smi_info->oem_data_avail_handler(smi_info)) | |
413 | goto retry; | |
1da177e4 LT |
414 | } else { |
415 | smi_info->si_state = SI_NORMAL; | |
416 | } | |
417 | } | |
418 | ||
419 | static void handle_transaction_done(struct smi_info *smi_info) | |
420 | { | |
421 | struct ipmi_smi_msg *msg; | |
422 | #ifdef DEBUG_TIMING | |
423 | struct timeval t; | |
424 | ||
425 | do_gettimeofday(&t); | |
426 | printk("**Done: %d.%9.9d\n", t.tv_sec, t.tv_usec); | |
427 | #endif | |
428 | switch (smi_info->si_state) { | |
429 | case SI_NORMAL: | |
b0defcdb | 430 | if (!smi_info->curr_msg) |
1da177e4 LT |
431 | break; |
432 | ||
433 | smi_info->curr_msg->rsp_size | |
434 | = smi_info->handlers->get_result( | |
435 | smi_info->si_sm, | |
436 | smi_info->curr_msg->rsp, | |
437 | IPMI_MAX_MSG_LENGTH); | |
438 | ||
439 | /* Do this here becase deliver_recv_msg() releases the | |
440 | lock, and a new message can be put in during the | |
441 | time the lock is released. */ | |
442 | msg = smi_info->curr_msg; | |
443 | smi_info->curr_msg = NULL; | |
444 | deliver_recv_msg(smi_info, msg); | |
445 | break; | |
446 | ||
447 | case SI_GETTING_FLAGS: | |
448 | { | |
449 | unsigned char msg[4]; | |
450 | unsigned int len; | |
451 | ||
452 | /* We got the flags from the SMI, now handle them. */ | |
453 | len = smi_info->handlers->get_result(smi_info->si_sm, msg, 4); | |
454 | if (msg[2] != 0) { | |
455 | /* Error fetching flags, just give up for | |
456 | now. */ | |
457 | smi_info->si_state = SI_NORMAL; | |
458 | } else if (len < 4) { | |
459 | /* Hmm, no flags. That's technically illegal, but | |
460 | don't use uninitialized data. */ | |
461 | smi_info->si_state = SI_NORMAL; | |
462 | } else { | |
463 | smi_info->msg_flags = msg[3]; | |
464 | handle_flags(smi_info); | |
465 | } | |
466 | break; | |
467 | } | |
468 | ||
469 | case SI_CLEARING_FLAGS: | |
470 | case SI_CLEARING_FLAGS_THEN_SET_IRQ: | |
471 | { | |
472 | unsigned char msg[3]; | |
473 | ||
474 | /* We cleared the flags. */ | |
475 | smi_info->handlers->get_result(smi_info->si_sm, msg, 3); | |
476 | if (msg[2] != 0) { | |
477 | /* Error clearing flags */ | |
478 | printk(KERN_WARNING | |
479 | "ipmi_si: Error clearing flags: %2.2x\n", | |
480 | msg[2]); | |
481 | } | |
482 | if (smi_info->si_state == SI_CLEARING_FLAGS_THEN_SET_IRQ) | |
483 | start_enable_irq(smi_info); | |
484 | else | |
485 | smi_info->si_state = SI_NORMAL; | |
486 | break; | |
487 | } | |
488 | ||
489 | case SI_GETTING_EVENTS: | |
490 | { | |
491 | smi_info->curr_msg->rsp_size | |
492 | = smi_info->handlers->get_result( | |
493 | smi_info->si_sm, | |
494 | smi_info->curr_msg->rsp, | |
495 | IPMI_MAX_MSG_LENGTH); | |
496 | ||
497 | /* Do this here becase deliver_recv_msg() releases the | |
498 | lock, and a new message can be put in during the | |
499 | time the lock is released. */ | |
500 | msg = smi_info->curr_msg; | |
501 | smi_info->curr_msg = NULL; | |
502 | if (msg->rsp[2] != 0) { | |
503 | /* Error getting event, probably done. */ | |
504 | msg->done(msg); | |
505 | ||
506 | /* Take off the event flag. */ | |
507 | smi_info->msg_flags &= ~EVENT_MSG_BUFFER_FULL; | |
508 | handle_flags(smi_info); | |
509 | } else { | |
510 | spin_lock(&smi_info->count_lock); | |
511 | smi_info->events++; | |
512 | spin_unlock(&smi_info->count_lock); | |
513 | ||
514 | /* Do this before we deliver the message | |
515 | because delivering the message releases the | |
516 | lock and something else can mess with the | |
517 | state. */ | |
518 | handle_flags(smi_info); | |
519 | ||
520 | deliver_recv_msg(smi_info, msg); | |
521 | } | |
522 | break; | |
523 | } | |
524 | ||
525 | case SI_GETTING_MESSAGES: | |
526 | { | |
527 | smi_info->curr_msg->rsp_size | |
528 | = smi_info->handlers->get_result( | |
529 | smi_info->si_sm, | |
530 | smi_info->curr_msg->rsp, | |
531 | IPMI_MAX_MSG_LENGTH); | |
532 | ||
533 | /* Do this here becase deliver_recv_msg() releases the | |
534 | lock, and a new message can be put in during the | |
535 | time the lock is released. */ | |
536 | msg = smi_info->curr_msg; | |
537 | smi_info->curr_msg = NULL; | |
538 | if (msg->rsp[2] != 0) { | |
539 | /* Error getting event, probably done. */ | |
540 | msg->done(msg); | |
541 | ||
542 | /* Take off the msg flag. */ | |
543 | smi_info->msg_flags &= ~RECEIVE_MSG_AVAIL; | |
544 | handle_flags(smi_info); | |
545 | } else { | |
546 | spin_lock(&smi_info->count_lock); | |
547 | smi_info->incoming_messages++; | |
548 | spin_unlock(&smi_info->count_lock); | |
549 | ||
550 | /* Do this before we deliver the message | |
551 | because delivering the message releases the | |
552 | lock and something else can mess with the | |
553 | state. */ | |
554 | handle_flags(smi_info); | |
555 | ||
556 | deliver_recv_msg(smi_info, msg); | |
557 | } | |
558 | break; | |
559 | } | |
560 | ||
561 | case SI_ENABLE_INTERRUPTS1: | |
562 | { | |
563 | unsigned char msg[4]; | |
564 | ||
565 | /* We got the flags from the SMI, now handle them. */ | |
566 | smi_info->handlers->get_result(smi_info->si_sm, msg, 4); | |
567 | if (msg[2] != 0) { | |
568 | printk(KERN_WARNING | |
569 | "ipmi_si: Could not enable interrupts" | |
570 | ", failed get, using polled mode.\n"); | |
571 | smi_info->si_state = SI_NORMAL; | |
572 | } else { | |
573 | msg[0] = (IPMI_NETFN_APP_REQUEST << 2); | |
574 | msg[1] = IPMI_SET_BMC_GLOBAL_ENABLES_CMD; | |
575 | msg[2] = msg[3] | 1; /* enable msg queue int */ | |
576 | smi_info->handlers->start_transaction( | |
577 | smi_info->si_sm, msg, 3); | |
578 | smi_info->si_state = SI_ENABLE_INTERRUPTS2; | |
579 | } | |
580 | break; | |
581 | } | |
582 | ||
583 | case SI_ENABLE_INTERRUPTS2: | |
584 | { | |
585 | unsigned char msg[4]; | |
586 | ||
587 | /* We got the flags from the SMI, now handle them. */ | |
588 | smi_info->handlers->get_result(smi_info->si_sm, msg, 4); | |
589 | if (msg[2] != 0) { | |
590 | printk(KERN_WARNING | |
591 | "ipmi_si: Could not enable interrupts" | |
592 | ", failed set, using polled mode.\n"); | |
593 | } | |
594 | smi_info->si_state = SI_NORMAL; | |
595 | break; | |
596 | } | |
597 | } | |
598 | } | |
599 | ||
600 | /* Called on timeouts and events. Timeouts should pass the elapsed | |
601 | time, interrupts should pass in zero. */ | |
602 | static enum si_sm_result smi_event_handler(struct smi_info *smi_info, | |
603 | int time) | |
604 | { | |
605 | enum si_sm_result si_sm_result; | |
606 | ||
607 | restart: | |
608 | /* There used to be a loop here that waited a little while | |
609 | (around 25us) before giving up. That turned out to be | |
610 | pointless, the minimum delays I was seeing were in the 300us | |
611 | range, which is far too long to wait in an interrupt. So | |
612 | we just run until the state machine tells us something | |
613 | happened or it needs a delay. */ | |
614 | si_sm_result = smi_info->handlers->event(smi_info->si_sm, time); | |
615 | time = 0; | |
616 | while (si_sm_result == SI_SM_CALL_WITHOUT_DELAY) | |
617 | { | |
618 | si_sm_result = smi_info->handlers->event(smi_info->si_sm, 0); | |
619 | } | |
620 | ||
621 | if (si_sm_result == SI_SM_TRANSACTION_COMPLETE) | |
622 | { | |
623 | spin_lock(&smi_info->count_lock); | |
624 | smi_info->complete_transactions++; | |
625 | spin_unlock(&smi_info->count_lock); | |
626 | ||
627 | handle_transaction_done(smi_info); | |
628 | si_sm_result = smi_info->handlers->event(smi_info->si_sm, 0); | |
629 | } | |
630 | else if (si_sm_result == SI_SM_HOSED) | |
631 | { | |
632 | spin_lock(&smi_info->count_lock); | |
633 | smi_info->hosed_count++; | |
634 | spin_unlock(&smi_info->count_lock); | |
635 | ||
636 | /* Do the before return_hosed_msg, because that | |
637 | releases the lock. */ | |
638 | smi_info->si_state = SI_NORMAL; | |
639 | if (smi_info->curr_msg != NULL) { | |
640 | /* If we were handling a user message, format | |
641 | a response to send to the upper layer to | |
642 | tell it about the error. */ | |
643 | return_hosed_msg(smi_info); | |
644 | } | |
645 | si_sm_result = smi_info->handlers->event(smi_info->si_sm, 0); | |
646 | } | |
647 | ||
648 | /* We prefer handling attn over new messages. */ | |
649 | if (si_sm_result == SI_SM_ATTN) | |
650 | { | |
651 | unsigned char msg[2]; | |
652 | ||
653 | spin_lock(&smi_info->count_lock); | |
654 | smi_info->attentions++; | |
655 | spin_unlock(&smi_info->count_lock); | |
656 | ||
657 | /* Got a attn, send down a get message flags to see | |
658 | what's causing it. It would be better to handle | |
659 | this in the upper layer, but due to the way | |
660 | interrupts work with the SMI, that's not really | |
661 | possible. */ | |
662 | msg[0] = (IPMI_NETFN_APP_REQUEST << 2); | |
663 | msg[1] = IPMI_GET_MSG_FLAGS_CMD; | |
664 | ||
665 | smi_info->handlers->start_transaction( | |
666 | smi_info->si_sm, msg, 2); | |
667 | smi_info->si_state = SI_GETTING_FLAGS; | |
668 | goto restart; | |
669 | } | |
670 | ||
671 | /* If we are currently idle, try to start the next message. */ | |
672 | if (si_sm_result == SI_SM_IDLE) { | |
673 | spin_lock(&smi_info->count_lock); | |
674 | smi_info->idles++; | |
675 | spin_unlock(&smi_info->count_lock); | |
676 | ||
677 | si_sm_result = start_next_msg(smi_info); | |
678 | if (si_sm_result != SI_SM_IDLE) | |
679 | goto restart; | |
680 | } | |
681 | ||
682 | if ((si_sm_result == SI_SM_IDLE) | |
683 | && (atomic_read(&smi_info->req_events))) | |
684 | { | |
685 | /* We are idle and the upper layer requested that I fetch | |
686 | events, so do so. */ | |
687 | unsigned char msg[2]; | |
688 | ||
689 | spin_lock(&smi_info->count_lock); | |
690 | smi_info->flag_fetches++; | |
691 | spin_unlock(&smi_info->count_lock); | |
692 | ||
693 | atomic_set(&smi_info->req_events, 0); | |
694 | msg[0] = (IPMI_NETFN_APP_REQUEST << 2); | |
695 | msg[1] = IPMI_GET_MSG_FLAGS_CMD; | |
696 | ||
697 | smi_info->handlers->start_transaction( | |
698 | smi_info->si_sm, msg, 2); | |
699 | smi_info->si_state = SI_GETTING_FLAGS; | |
700 | goto restart; | |
701 | } | |
702 | ||
703 | return si_sm_result; | |
704 | } | |
705 | ||
706 | static void sender(void *send_info, | |
707 | struct ipmi_smi_msg *msg, | |
708 | int priority) | |
709 | { | |
710 | struct smi_info *smi_info = send_info; | |
711 | enum si_sm_result result; | |
712 | unsigned long flags; | |
713 | #ifdef DEBUG_TIMING | |
714 | struct timeval t; | |
715 | #endif | |
716 | ||
717 | spin_lock_irqsave(&(smi_info->msg_lock), flags); | |
718 | #ifdef DEBUG_TIMING | |
719 | do_gettimeofday(&t); | |
720 | printk("**Enqueue: %d.%9.9d\n", t.tv_sec, t.tv_usec); | |
721 | #endif | |
722 | ||
723 | if (smi_info->run_to_completion) { | |
724 | /* If we are running to completion, then throw it in | |
725 | the list and run transactions until everything is | |
726 | clear. Priority doesn't matter here. */ | |
727 | list_add_tail(&(msg->link), &(smi_info->xmit_msgs)); | |
728 | ||
729 | /* We have to release the msg lock and claim the smi | |
730 | lock in this case, because of race conditions. */ | |
731 | spin_unlock_irqrestore(&(smi_info->msg_lock), flags); | |
732 | ||
733 | spin_lock_irqsave(&(smi_info->si_lock), flags); | |
734 | result = smi_event_handler(smi_info, 0); | |
735 | while (result != SI_SM_IDLE) { | |
736 | udelay(SI_SHORT_TIMEOUT_USEC); | |
737 | result = smi_event_handler(smi_info, | |
738 | SI_SHORT_TIMEOUT_USEC); | |
739 | } | |
740 | spin_unlock_irqrestore(&(smi_info->si_lock), flags); | |
741 | return; | |
742 | } else { | |
743 | if (priority > 0) { | |
744 | list_add_tail(&(msg->link), &(smi_info->hp_xmit_msgs)); | |
745 | } else { | |
746 | list_add_tail(&(msg->link), &(smi_info->xmit_msgs)); | |
747 | } | |
748 | } | |
749 | spin_unlock_irqrestore(&(smi_info->msg_lock), flags); | |
750 | ||
751 | spin_lock_irqsave(&(smi_info->si_lock), flags); | |
752 | if ((smi_info->si_state == SI_NORMAL) | |
753 | && (smi_info->curr_msg == NULL)) | |
754 | { | |
755 | start_next_msg(smi_info); | |
1da177e4 LT |
756 | } |
757 | spin_unlock_irqrestore(&(smi_info->si_lock), flags); | |
758 | } | |
759 | ||
760 | static void set_run_to_completion(void *send_info, int i_run_to_completion) | |
761 | { | |
762 | struct smi_info *smi_info = send_info; | |
763 | enum si_sm_result result; | |
764 | unsigned long flags; | |
765 | ||
766 | spin_lock_irqsave(&(smi_info->si_lock), flags); | |
767 | ||
768 | smi_info->run_to_completion = i_run_to_completion; | |
769 | if (i_run_to_completion) { | |
770 | result = smi_event_handler(smi_info, 0); | |
771 | while (result != SI_SM_IDLE) { | |
772 | udelay(SI_SHORT_TIMEOUT_USEC); | |
773 | result = smi_event_handler(smi_info, | |
774 | SI_SHORT_TIMEOUT_USEC); | |
775 | } | |
776 | } | |
777 | ||
778 | spin_unlock_irqrestore(&(smi_info->si_lock), flags); | |
779 | } | |
780 | ||
a9a2c44f CM |
781 | static int ipmi_thread(void *data) |
782 | { | |
783 | struct smi_info *smi_info = data; | |
e9a705a0 | 784 | unsigned long flags; |
a9a2c44f CM |
785 | enum si_sm_result smi_result; |
786 | ||
a9a2c44f | 787 | set_user_nice(current, 19); |
e9a705a0 | 788 | while (!kthread_should_stop()) { |
a9a2c44f | 789 | spin_lock_irqsave(&(smi_info->si_lock), flags); |
8a3628d5 | 790 | smi_result = smi_event_handler(smi_info, 0); |
a9a2c44f | 791 | spin_unlock_irqrestore(&(smi_info->si_lock), flags); |
e9a705a0 MD |
792 | if (smi_result == SI_SM_CALL_WITHOUT_DELAY) { |
793 | /* do nothing */ | |
a9a2c44f | 794 | } |
e9a705a0 | 795 | else if (smi_result == SI_SM_CALL_WITH_DELAY) |
33979734 | 796 | schedule(); |
e9a705a0 MD |
797 | else |
798 | schedule_timeout_interruptible(1); | |
a9a2c44f | 799 | } |
a9a2c44f CM |
800 | return 0; |
801 | } | |
802 | ||
803 | ||
1da177e4 LT |
804 | static void poll(void *send_info) |
805 | { | |
806 | struct smi_info *smi_info = send_info; | |
807 | ||
808 | smi_event_handler(smi_info, 0); | |
809 | } | |
810 | ||
811 | static void request_events(void *send_info) | |
812 | { | |
813 | struct smi_info *smi_info = send_info; | |
814 | ||
815 | atomic_set(&smi_info->req_events, 1); | |
816 | } | |
817 | ||
818 | static int initialized = 0; | |
819 | ||
1da177e4 LT |
820 | static void smi_timeout(unsigned long data) |
821 | { | |
822 | struct smi_info *smi_info = (struct smi_info *) data; | |
823 | enum si_sm_result smi_result; | |
824 | unsigned long flags; | |
825 | unsigned long jiffies_now; | |
c4edff1c | 826 | long time_diff; |
1da177e4 LT |
827 | #ifdef DEBUG_TIMING |
828 | struct timeval t; | |
829 | #endif | |
830 | ||
a9a2c44f | 831 | if (atomic_read(&smi_info->stop_operation)) |
1da177e4 | 832 | return; |
1da177e4 LT |
833 | |
834 | spin_lock_irqsave(&(smi_info->si_lock), flags); | |
835 | #ifdef DEBUG_TIMING | |
836 | do_gettimeofday(&t); | |
837 | printk("**Timer: %d.%9.9d\n", t.tv_sec, t.tv_usec); | |
838 | #endif | |
839 | jiffies_now = jiffies; | |
c4edff1c | 840 | time_diff = (((long)jiffies_now - (long)smi_info->last_timeout_jiffies) |
1da177e4 LT |
841 | * SI_USEC_PER_JIFFY); |
842 | smi_result = smi_event_handler(smi_info, time_diff); | |
843 | ||
844 | spin_unlock_irqrestore(&(smi_info->si_lock), flags); | |
845 | ||
846 | smi_info->last_timeout_jiffies = jiffies_now; | |
847 | ||
b0defcdb | 848 | if ((smi_info->irq) && (!smi_info->interrupt_disabled)) { |
1da177e4 LT |
849 | /* Running with interrupts, only do long timeouts. */ |
850 | smi_info->si_timer.expires = jiffies + SI_TIMEOUT_JIFFIES; | |
851 | spin_lock_irqsave(&smi_info->count_lock, flags); | |
852 | smi_info->long_timeouts++; | |
853 | spin_unlock_irqrestore(&smi_info->count_lock, flags); | |
854 | goto do_add_timer; | |
855 | } | |
856 | ||
857 | /* If the state machine asks for a short delay, then shorten | |
858 | the timer timeout. */ | |
859 | if (smi_result == SI_SM_CALL_WITH_DELAY) { | |
860 | spin_lock_irqsave(&smi_info->count_lock, flags); | |
861 | smi_info->short_timeouts++; | |
862 | spin_unlock_irqrestore(&smi_info->count_lock, flags); | |
1da177e4 | 863 | smi_info->si_timer.expires = jiffies + 1; |
1da177e4 LT |
864 | } else { |
865 | spin_lock_irqsave(&smi_info->count_lock, flags); | |
866 | smi_info->long_timeouts++; | |
867 | spin_unlock_irqrestore(&smi_info->count_lock, flags); | |
868 | smi_info->si_timer.expires = jiffies + SI_TIMEOUT_JIFFIES; | |
1da177e4 LT |
869 | } |
870 | ||
871 | do_add_timer: | |
872 | add_timer(&(smi_info->si_timer)); | |
873 | } | |
874 | ||
7d12e780 | 875 | static irqreturn_t si_irq_handler(int irq, void *data) |
1da177e4 LT |
876 | { |
877 | struct smi_info *smi_info = data; | |
878 | unsigned long flags; | |
879 | #ifdef DEBUG_TIMING | |
880 | struct timeval t; | |
881 | #endif | |
882 | ||
883 | spin_lock_irqsave(&(smi_info->si_lock), flags); | |
884 | ||
885 | spin_lock(&smi_info->count_lock); | |
886 | smi_info->interrupts++; | |
887 | spin_unlock(&smi_info->count_lock); | |
888 | ||
a9a2c44f | 889 | if (atomic_read(&smi_info->stop_operation)) |
1da177e4 LT |
890 | goto out; |
891 | ||
892 | #ifdef DEBUG_TIMING | |
893 | do_gettimeofday(&t); | |
894 | printk("**Interrupt: %d.%9.9d\n", t.tv_sec, t.tv_usec); | |
895 | #endif | |
896 | smi_event_handler(smi_info, 0); | |
897 | out: | |
898 | spin_unlock_irqrestore(&(smi_info->si_lock), flags); | |
899 | return IRQ_HANDLED; | |
900 | } | |
901 | ||
7d12e780 | 902 | static irqreturn_t si_bt_irq_handler(int irq, void *data) |
9dbf68f9 CM |
903 | { |
904 | struct smi_info *smi_info = data; | |
905 | /* We need to clear the IRQ flag for the BT interface. */ | |
906 | smi_info->io.outputb(&smi_info->io, IPMI_BT_INTMASK_REG, | |
907 | IPMI_BT_INTMASK_CLEAR_IRQ_BIT | |
908 | | IPMI_BT_INTMASK_ENABLE_IRQ_BIT); | |
7d12e780 | 909 | return si_irq_handler(irq, data); |
9dbf68f9 CM |
910 | } |
911 | ||
453823ba CM |
912 | static int smi_start_processing(void *send_info, |
913 | ipmi_smi_t intf) | |
914 | { | |
915 | struct smi_info *new_smi = send_info; | |
a51f4a81 | 916 | int enable = 0; |
453823ba CM |
917 | |
918 | new_smi->intf = intf; | |
919 | ||
920 | /* Set up the timer that drives the interface. */ | |
921 | setup_timer(&new_smi->si_timer, smi_timeout, (long)new_smi); | |
922 | new_smi->last_timeout_jiffies = jiffies; | |
923 | mod_timer(&new_smi->si_timer, jiffies + SI_TIMEOUT_JIFFIES); | |
924 | ||
a51f4a81 CM |
925 | /* |
926 | * Check if the user forcefully enabled the daemon. | |
927 | */ | |
928 | if (new_smi->intf_num < num_force_kipmid) | |
929 | enable = force_kipmid[new_smi->intf_num]; | |
df3fe8de CM |
930 | /* |
931 | * The BT interface is efficient enough to not need a thread, | |
932 | * and there is no need for a thread if we have interrupts. | |
933 | */ | |
a51f4a81 CM |
934 | else if ((new_smi->si_type != SI_BT) && (!new_smi->irq)) |
935 | enable = 1; | |
936 | ||
937 | if (enable) { | |
453823ba CM |
938 | new_smi->thread = kthread_run(ipmi_thread, new_smi, |
939 | "kipmi%d", new_smi->intf_num); | |
940 | if (IS_ERR(new_smi->thread)) { | |
941 | printk(KERN_NOTICE "ipmi_si_intf: Could not start" | |
942 | " kernel thread due to error %ld, only using" | |
943 | " timers to drive the interface\n", | |
944 | PTR_ERR(new_smi->thread)); | |
945 | new_smi->thread = NULL; | |
946 | } | |
947 | } | |
948 | ||
949 | return 0; | |
950 | } | |
9dbf68f9 | 951 | |
1da177e4 LT |
952 | static struct ipmi_smi_handlers handlers = |
953 | { | |
954 | .owner = THIS_MODULE, | |
453823ba | 955 | .start_processing = smi_start_processing, |
1da177e4 LT |
956 | .sender = sender, |
957 | .request_events = request_events, | |
958 | .set_run_to_completion = set_run_to_completion, | |
959 | .poll = poll, | |
960 | }; | |
961 | ||
962 | /* There can be 4 IO ports passed in (with or without IRQs), 4 addresses, | |
963 | a default IO port, and 1 ACPI/SPMI address. That sets SI_MAX_DRIVERS */ | |
964 | ||
b0defcdb | 965 | static LIST_HEAD(smi_infos); |
d6dfd131 | 966 | static DEFINE_MUTEX(smi_infos_lock); |
b0defcdb | 967 | static int smi_num; /* Used to sequence the SMIs */ |
1da177e4 | 968 | |
1da177e4 LT |
969 | #define DEFAULT_REGSPACING 1 |
970 | ||
971 | static int si_trydefaults = 1; | |
972 | static char *si_type[SI_MAX_PARMS]; | |
973 | #define MAX_SI_TYPE_STR 30 | |
974 | static char si_type_str[MAX_SI_TYPE_STR]; | |
975 | static unsigned long addrs[SI_MAX_PARMS]; | |
976 | static int num_addrs; | |
977 | static unsigned int ports[SI_MAX_PARMS]; | |
978 | static int num_ports; | |
979 | static int irqs[SI_MAX_PARMS]; | |
980 | static int num_irqs; | |
981 | static int regspacings[SI_MAX_PARMS]; | |
982 | static int num_regspacings = 0; | |
983 | static int regsizes[SI_MAX_PARMS]; | |
984 | static int num_regsizes = 0; | |
985 | static int regshifts[SI_MAX_PARMS]; | |
986 | static int num_regshifts = 0; | |
987 | static int slave_addrs[SI_MAX_PARMS]; | |
988 | static int num_slave_addrs = 0; | |
989 | ||
990 | ||
991 | module_param_named(trydefaults, si_trydefaults, bool, 0); | |
992 | MODULE_PARM_DESC(trydefaults, "Setting this to 'false' will disable the" | |
993 | " default scan of the KCS and SMIC interface at the standard" | |
994 | " address"); | |
995 | module_param_string(type, si_type_str, MAX_SI_TYPE_STR, 0); | |
996 | MODULE_PARM_DESC(type, "Defines the type of each interface, each" | |
997 | " interface separated by commas. The types are 'kcs'," | |
998 | " 'smic', and 'bt'. For example si_type=kcs,bt will set" | |
999 | " the first interface to kcs and the second to bt"); | |
1000 | module_param_array(addrs, long, &num_addrs, 0); | |
1001 | MODULE_PARM_DESC(addrs, "Sets the memory address of each interface, the" | |
1002 | " addresses separated by commas. Only use if an interface" | |
1003 | " is in memory. Otherwise, set it to zero or leave" | |
1004 | " it blank."); | |
1005 | module_param_array(ports, int, &num_ports, 0); | |
1006 | MODULE_PARM_DESC(ports, "Sets the port address of each interface, the" | |
1007 | " addresses separated by commas. Only use if an interface" | |
1008 | " is a port. Otherwise, set it to zero or leave" | |
1009 | " it blank."); | |
1010 | module_param_array(irqs, int, &num_irqs, 0); | |
1011 | MODULE_PARM_DESC(irqs, "Sets the interrupt of each interface, the" | |
1012 | " addresses separated by commas. Only use if an interface" | |
1013 | " has an interrupt. Otherwise, set it to zero or leave" | |
1014 | " it blank."); | |
1015 | module_param_array(regspacings, int, &num_regspacings, 0); | |
1016 | MODULE_PARM_DESC(regspacings, "The number of bytes between the start address" | |
1017 | " and each successive register used by the interface. For" | |
1018 | " instance, if the start address is 0xca2 and the spacing" | |
1019 | " is 2, then the second address is at 0xca4. Defaults" | |
1020 | " to 1."); | |
1021 | module_param_array(regsizes, int, &num_regsizes, 0); | |
1022 | MODULE_PARM_DESC(regsizes, "The size of the specific IPMI register in bytes." | |
1023 | " This should generally be 1, 2, 4, or 8 for an 8-bit," | |
1024 | " 16-bit, 32-bit, or 64-bit register. Use this if you" | |
1025 | " the 8-bit IPMI register has to be read from a larger" | |
1026 | " register."); | |
1027 | module_param_array(regshifts, int, &num_regshifts, 0); | |
1028 | MODULE_PARM_DESC(regshifts, "The amount to shift the data read from the." | |
1029 | " IPMI register, in bits. For instance, if the data" | |
1030 | " is read from a 32-bit word and the IPMI data is in" | |
1031 | " bit 8-15, then the shift would be 8"); | |
1032 | module_param_array(slave_addrs, int, &num_slave_addrs, 0); | |
1033 | MODULE_PARM_DESC(slave_addrs, "Set the default IPMB slave address for" | |
1034 | " the controller. Normally this is 0x20, but can be" | |
1035 | " overridden by this parm. This is an array indexed" | |
1036 | " by interface number."); | |
a51f4a81 CM |
1037 | module_param_array(force_kipmid, int, &num_force_kipmid, 0); |
1038 | MODULE_PARM_DESC(force_kipmid, "Force the kipmi daemon to be enabled (1) or" | |
1039 | " disabled(0). Normally the IPMI driver auto-detects" | |
1040 | " this, but the value may be overridden by this parm."); | |
1da177e4 LT |
1041 | |
1042 | ||
b0defcdb | 1043 | #define IPMI_IO_ADDR_SPACE 0 |
1da177e4 | 1044 | #define IPMI_MEM_ADDR_SPACE 1 |
b0defcdb | 1045 | static char *addr_space_to_str[] = { "I/O", "memory" }; |
1da177e4 | 1046 | |
b0defcdb | 1047 | static void std_irq_cleanup(struct smi_info *info) |
1da177e4 | 1048 | { |
b0defcdb CM |
1049 | if (info->si_type == SI_BT) |
1050 | /* Disable the interrupt in the BT interface. */ | |
1051 | info->io.outputb(&info->io, IPMI_BT_INTMASK_REG, 0); | |
1052 | free_irq(info->irq, info); | |
1da177e4 | 1053 | } |
1da177e4 LT |
1054 | |
1055 | static int std_irq_setup(struct smi_info *info) | |
1056 | { | |
1057 | int rv; | |
1058 | ||
b0defcdb | 1059 | if (!info->irq) |
1da177e4 LT |
1060 | return 0; |
1061 | ||
9dbf68f9 CM |
1062 | if (info->si_type == SI_BT) { |
1063 | rv = request_irq(info->irq, | |
1064 | si_bt_irq_handler, | |
0f2ed4c6 | 1065 | IRQF_DISABLED, |
9dbf68f9 CM |
1066 | DEVICE_NAME, |
1067 | info); | |
b0defcdb | 1068 | if (!rv) |
9dbf68f9 CM |
1069 | /* Enable the interrupt in the BT interface. */ |
1070 | info->io.outputb(&info->io, IPMI_BT_INTMASK_REG, | |
1071 | IPMI_BT_INTMASK_ENABLE_IRQ_BIT); | |
1072 | } else | |
1073 | rv = request_irq(info->irq, | |
1074 | si_irq_handler, | |
0f2ed4c6 | 1075 | IRQF_DISABLED, |
9dbf68f9 CM |
1076 | DEVICE_NAME, |
1077 | info); | |
1da177e4 LT |
1078 | if (rv) { |
1079 | printk(KERN_WARNING | |
1080 | "ipmi_si: %s unable to claim interrupt %d," | |
1081 | " running polled\n", | |
1082 | DEVICE_NAME, info->irq); | |
1083 | info->irq = 0; | |
1084 | } else { | |
b0defcdb | 1085 | info->irq_cleanup = std_irq_cleanup; |
1da177e4 LT |
1086 | printk(" Using irq %d\n", info->irq); |
1087 | } | |
1088 | ||
1089 | return rv; | |
1090 | } | |
1091 | ||
1da177e4 LT |
1092 | static unsigned char port_inb(struct si_sm_io *io, unsigned int offset) |
1093 | { | |
b0defcdb | 1094 | unsigned int addr = io->addr_data; |
1da177e4 | 1095 | |
b0defcdb | 1096 | return inb(addr + (offset * io->regspacing)); |
1da177e4 LT |
1097 | } |
1098 | ||
1099 | static void port_outb(struct si_sm_io *io, unsigned int offset, | |
1100 | unsigned char b) | |
1101 | { | |
b0defcdb | 1102 | unsigned int addr = io->addr_data; |
1da177e4 | 1103 | |
b0defcdb | 1104 | outb(b, addr + (offset * io->regspacing)); |
1da177e4 LT |
1105 | } |
1106 | ||
1107 | static unsigned char port_inw(struct si_sm_io *io, unsigned int offset) | |
1108 | { | |
b0defcdb | 1109 | unsigned int addr = io->addr_data; |
1da177e4 | 1110 | |
b0defcdb | 1111 | return (inw(addr + (offset * io->regspacing)) >> io->regshift) & 0xff; |
1da177e4 LT |
1112 | } |
1113 | ||
1114 | static void port_outw(struct si_sm_io *io, unsigned int offset, | |
1115 | unsigned char b) | |
1116 | { | |
b0defcdb | 1117 | unsigned int addr = io->addr_data; |
1da177e4 | 1118 | |
b0defcdb | 1119 | outw(b << io->regshift, addr + (offset * io->regspacing)); |
1da177e4 LT |
1120 | } |
1121 | ||
1122 | static unsigned char port_inl(struct si_sm_io *io, unsigned int offset) | |
1123 | { | |
b0defcdb | 1124 | unsigned int addr = io->addr_data; |
1da177e4 | 1125 | |
b0defcdb | 1126 | return (inl(addr + (offset * io->regspacing)) >> io->regshift) & 0xff; |
1da177e4 LT |
1127 | } |
1128 | ||
1129 | static void port_outl(struct si_sm_io *io, unsigned int offset, | |
1130 | unsigned char b) | |
1131 | { | |
b0defcdb | 1132 | unsigned int addr = io->addr_data; |
1da177e4 | 1133 | |
b0defcdb | 1134 | outl(b << io->regshift, addr+(offset * io->regspacing)); |
1da177e4 LT |
1135 | } |
1136 | ||
1137 | static void port_cleanup(struct smi_info *info) | |
1138 | { | |
b0defcdb | 1139 | unsigned int addr = info->io.addr_data; |
d61a3ead | 1140 | int idx; |
1da177e4 | 1141 | |
b0defcdb | 1142 | if (addr) { |
d61a3ead CM |
1143 | for (idx = 0; idx < info->io_size; idx++) { |
1144 | release_region(addr + idx * info->io.regspacing, | |
1145 | info->io.regsize); | |
1146 | } | |
1da177e4 | 1147 | } |
1da177e4 LT |
1148 | } |
1149 | ||
1150 | static int port_setup(struct smi_info *info) | |
1151 | { | |
b0defcdb | 1152 | unsigned int addr = info->io.addr_data; |
d61a3ead | 1153 | int idx; |
1da177e4 | 1154 | |
b0defcdb | 1155 | if (!addr) |
1da177e4 LT |
1156 | return -ENODEV; |
1157 | ||
1158 | info->io_cleanup = port_cleanup; | |
1159 | ||
1160 | /* Figure out the actual inb/inw/inl/etc routine to use based | |
1161 | upon the register size. */ | |
1162 | switch (info->io.regsize) { | |
1163 | case 1: | |
1164 | info->io.inputb = port_inb; | |
1165 | info->io.outputb = port_outb; | |
1166 | break; | |
1167 | case 2: | |
1168 | info->io.inputb = port_inw; | |
1169 | info->io.outputb = port_outw; | |
1170 | break; | |
1171 | case 4: | |
1172 | info->io.inputb = port_inl; | |
1173 | info->io.outputb = port_outl; | |
1174 | break; | |
1175 | default: | |
1176 | printk("ipmi_si: Invalid register size: %d\n", | |
1177 | info->io.regsize); | |
1178 | return -EINVAL; | |
1179 | } | |
1180 | ||
d61a3ead CM |
1181 | /* Some BIOSes reserve disjoint I/O regions in their ACPI |
1182 | * tables. This causes problems when trying to register the | |
1183 | * entire I/O region. Therefore we must register each I/O | |
1184 | * port separately. | |
1185 | */ | |
1186 | for (idx = 0; idx < info->io_size; idx++) { | |
1187 | if (request_region(addr + idx * info->io.regspacing, | |
1188 | info->io.regsize, DEVICE_NAME) == NULL) { | |
1189 | /* Undo allocations */ | |
1190 | while (idx--) { | |
1191 | release_region(addr + idx * info->io.regspacing, | |
1192 | info->io.regsize); | |
1193 | } | |
1194 | return -EIO; | |
1195 | } | |
1196 | } | |
1da177e4 LT |
1197 | return 0; |
1198 | } | |
1199 | ||
546cfdf4 | 1200 | static unsigned char intf_mem_inb(struct si_sm_io *io, unsigned int offset) |
1da177e4 LT |
1201 | { |
1202 | return readb((io->addr)+(offset * io->regspacing)); | |
1203 | } | |
1204 | ||
546cfdf4 | 1205 | static void intf_mem_outb(struct si_sm_io *io, unsigned int offset, |
1da177e4 LT |
1206 | unsigned char b) |
1207 | { | |
1208 | writeb(b, (io->addr)+(offset * io->regspacing)); | |
1209 | } | |
1210 | ||
546cfdf4 | 1211 | static unsigned char intf_mem_inw(struct si_sm_io *io, unsigned int offset) |
1da177e4 LT |
1212 | { |
1213 | return (readw((io->addr)+(offset * io->regspacing)) >> io->regshift) | |
1214 | && 0xff; | |
1215 | } | |
1216 | ||
546cfdf4 | 1217 | static void intf_mem_outw(struct si_sm_io *io, unsigned int offset, |
1da177e4 LT |
1218 | unsigned char b) |
1219 | { | |
1220 | writeb(b << io->regshift, (io->addr)+(offset * io->regspacing)); | |
1221 | } | |
1222 | ||
546cfdf4 | 1223 | static unsigned char intf_mem_inl(struct si_sm_io *io, unsigned int offset) |
1da177e4 LT |
1224 | { |
1225 | return (readl((io->addr)+(offset * io->regspacing)) >> io->regshift) | |
1226 | && 0xff; | |
1227 | } | |
1228 | ||
546cfdf4 | 1229 | static void intf_mem_outl(struct si_sm_io *io, unsigned int offset, |
1da177e4 LT |
1230 | unsigned char b) |
1231 | { | |
1232 | writel(b << io->regshift, (io->addr)+(offset * io->regspacing)); | |
1233 | } | |
1234 | ||
1235 | #ifdef readq | |
1236 | static unsigned char mem_inq(struct si_sm_io *io, unsigned int offset) | |
1237 | { | |
1238 | return (readq((io->addr)+(offset * io->regspacing)) >> io->regshift) | |
1239 | && 0xff; | |
1240 | } | |
1241 | ||
1242 | static void mem_outq(struct si_sm_io *io, unsigned int offset, | |
1243 | unsigned char b) | |
1244 | { | |
1245 | writeq(b << io->regshift, (io->addr)+(offset * io->regspacing)); | |
1246 | } | |
1247 | #endif | |
1248 | ||
1249 | static void mem_cleanup(struct smi_info *info) | |
1250 | { | |
b0defcdb | 1251 | unsigned long addr = info->io.addr_data; |
1da177e4 LT |
1252 | int mapsize; |
1253 | ||
1254 | if (info->io.addr) { | |
1255 | iounmap(info->io.addr); | |
1256 | ||
1257 | mapsize = ((info->io_size * info->io.regspacing) | |
1258 | - (info->io.regspacing - info->io.regsize)); | |
1259 | ||
b0defcdb | 1260 | release_mem_region(addr, mapsize); |
1da177e4 | 1261 | } |
1da177e4 LT |
1262 | } |
1263 | ||
1264 | static int mem_setup(struct smi_info *info) | |
1265 | { | |
b0defcdb | 1266 | unsigned long addr = info->io.addr_data; |
1da177e4 LT |
1267 | int mapsize; |
1268 | ||
b0defcdb | 1269 | if (!addr) |
1da177e4 LT |
1270 | return -ENODEV; |
1271 | ||
1272 | info->io_cleanup = mem_cleanup; | |
1273 | ||
1274 | /* Figure out the actual readb/readw/readl/etc routine to use based | |
1275 | upon the register size. */ | |
1276 | switch (info->io.regsize) { | |
1277 | case 1: | |
546cfdf4 AD |
1278 | info->io.inputb = intf_mem_inb; |
1279 | info->io.outputb = intf_mem_outb; | |
1da177e4 LT |
1280 | break; |
1281 | case 2: | |
546cfdf4 AD |
1282 | info->io.inputb = intf_mem_inw; |
1283 | info->io.outputb = intf_mem_outw; | |
1da177e4 LT |
1284 | break; |
1285 | case 4: | |
546cfdf4 AD |
1286 | info->io.inputb = intf_mem_inl; |
1287 | info->io.outputb = intf_mem_outl; | |
1da177e4 LT |
1288 | break; |
1289 | #ifdef readq | |
1290 | case 8: | |
1291 | info->io.inputb = mem_inq; | |
1292 | info->io.outputb = mem_outq; | |
1293 | break; | |
1294 | #endif | |
1295 | default: | |
1296 | printk("ipmi_si: Invalid register size: %d\n", | |
1297 | info->io.regsize); | |
1298 | return -EINVAL; | |
1299 | } | |
1300 | ||
1301 | /* Calculate the total amount of memory to claim. This is an | |
1302 | * unusual looking calculation, but it avoids claiming any | |
1303 | * more memory than it has to. It will claim everything | |
1304 | * between the first address to the end of the last full | |
1305 | * register. */ | |
1306 | mapsize = ((info->io_size * info->io.regspacing) | |
1307 | - (info->io.regspacing - info->io.regsize)); | |
1308 | ||
b0defcdb | 1309 | if (request_mem_region(addr, mapsize, DEVICE_NAME) == NULL) |
1da177e4 LT |
1310 | return -EIO; |
1311 | ||
b0defcdb | 1312 | info->io.addr = ioremap(addr, mapsize); |
1da177e4 | 1313 | if (info->io.addr == NULL) { |
b0defcdb | 1314 | release_mem_region(addr, mapsize); |
1da177e4 LT |
1315 | return -EIO; |
1316 | } | |
1317 | return 0; | |
1318 | } | |
1319 | ||
b0defcdb CM |
1320 | |
1321 | static __devinit void hardcode_find_bmc(void) | |
1da177e4 | 1322 | { |
b0defcdb | 1323 | int i; |
1da177e4 LT |
1324 | struct smi_info *info; |
1325 | ||
b0defcdb CM |
1326 | for (i = 0; i < SI_MAX_PARMS; i++) { |
1327 | if (!ports[i] && !addrs[i]) | |
1328 | continue; | |
1da177e4 | 1329 | |
b0defcdb CM |
1330 | info = kzalloc(sizeof(*info), GFP_KERNEL); |
1331 | if (!info) | |
1332 | return; | |
1da177e4 | 1333 | |
b0defcdb | 1334 | info->addr_source = "hardcoded"; |
1da177e4 | 1335 | |
b0defcdb CM |
1336 | if (!si_type[i] || strcmp(si_type[i], "kcs") == 0) { |
1337 | info->si_type = SI_KCS; | |
1338 | } else if (strcmp(si_type[i], "smic") == 0) { | |
1339 | info->si_type = SI_SMIC; | |
1340 | } else if (strcmp(si_type[i], "bt") == 0) { | |
1341 | info->si_type = SI_BT; | |
1342 | } else { | |
1343 | printk(KERN_WARNING | |
1344 | "ipmi_si: Interface type specified " | |
1345 | "for interface %d, was invalid: %s\n", | |
1346 | i, si_type[i]); | |
1347 | kfree(info); | |
1348 | continue; | |
1349 | } | |
1da177e4 | 1350 | |
b0defcdb CM |
1351 | if (ports[i]) { |
1352 | /* An I/O port */ | |
1353 | info->io_setup = port_setup; | |
1354 | info->io.addr_data = ports[i]; | |
1355 | info->io.addr_type = IPMI_IO_ADDR_SPACE; | |
1356 | } else if (addrs[i]) { | |
1357 | /* A memory port */ | |
1358 | info->io_setup = mem_setup; | |
1359 | info->io.addr_data = addrs[i]; | |
1360 | info->io.addr_type = IPMI_MEM_ADDR_SPACE; | |
1361 | } else { | |
1362 | printk(KERN_WARNING | |
1363 | "ipmi_si: Interface type specified " | |
1364 | "for interface %d, " | |
1365 | "but port and address were not set or " | |
1366 | "set to zero.\n", i); | |
1367 | kfree(info); | |
1368 | continue; | |
1369 | } | |
1da177e4 | 1370 | |
b0defcdb CM |
1371 | info->io.addr = NULL; |
1372 | info->io.regspacing = regspacings[i]; | |
1373 | if (!info->io.regspacing) | |
1374 | info->io.regspacing = DEFAULT_REGSPACING; | |
1375 | info->io.regsize = regsizes[i]; | |
1376 | if (!info->io.regsize) | |
1377 | info->io.regsize = DEFAULT_REGSPACING; | |
1378 | info->io.regshift = regshifts[i]; | |
1379 | info->irq = irqs[i]; | |
1380 | if (info->irq) | |
1381 | info->irq_setup = std_irq_setup; | |
1da177e4 | 1382 | |
b0defcdb CM |
1383 | try_smi_init(info); |
1384 | } | |
1385 | } | |
1da177e4 | 1386 | |
8466361a | 1387 | #ifdef CONFIG_ACPI |
1da177e4 LT |
1388 | |
1389 | #include <linux/acpi.h> | |
1390 | ||
1391 | /* Once we get an ACPI failure, we don't try any more, because we go | |
1392 | through the tables sequentially. Once we don't find a table, there | |
1393 | are no more. */ | |
1394 | static int acpi_failure = 0; | |
1395 | ||
1396 | /* For GPE-type interrupts. */ | |
1397 | static u32 ipmi_acpi_gpe(void *context) | |
1398 | { | |
1399 | struct smi_info *smi_info = context; | |
1400 | unsigned long flags; | |
1401 | #ifdef DEBUG_TIMING | |
1402 | struct timeval t; | |
1403 | #endif | |
1404 | ||
1405 | spin_lock_irqsave(&(smi_info->si_lock), flags); | |
1406 | ||
1407 | spin_lock(&smi_info->count_lock); | |
1408 | smi_info->interrupts++; | |
1409 | spin_unlock(&smi_info->count_lock); | |
1410 | ||
a9a2c44f | 1411 | if (atomic_read(&smi_info->stop_operation)) |
1da177e4 LT |
1412 | goto out; |
1413 | ||
1414 | #ifdef DEBUG_TIMING | |
1415 | do_gettimeofday(&t); | |
1416 | printk("**ACPI_GPE: %d.%9.9d\n", t.tv_sec, t.tv_usec); | |
1417 | #endif | |
1418 | smi_event_handler(smi_info, 0); | |
1419 | out: | |
1420 | spin_unlock_irqrestore(&(smi_info->si_lock), flags); | |
1421 | ||
1422 | return ACPI_INTERRUPT_HANDLED; | |
1423 | } | |
1424 | ||
b0defcdb CM |
1425 | static void acpi_gpe_irq_cleanup(struct smi_info *info) |
1426 | { | |
1427 | if (!info->irq) | |
1428 | return; | |
1429 | ||
1430 | acpi_remove_gpe_handler(NULL, info->irq, &ipmi_acpi_gpe); | |
1431 | } | |
1432 | ||
1da177e4 LT |
1433 | static int acpi_gpe_irq_setup(struct smi_info *info) |
1434 | { | |
1435 | acpi_status status; | |
1436 | ||
b0defcdb | 1437 | if (!info->irq) |
1da177e4 LT |
1438 | return 0; |
1439 | ||
1440 | /* FIXME - is level triggered right? */ | |
1441 | status = acpi_install_gpe_handler(NULL, | |
1442 | info->irq, | |
1443 | ACPI_GPE_LEVEL_TRIGGERED, | |
1444 | &ipmi_acpi_gpe, | |
1445 | info); | |
1446 | if (status != AE_OK) { | |
1447 | printk(KERN_WARNING | |
1448 | "ipmi_si: %s unable to claim ACPI GPE %d," | |
1449 | " running polled\n", | |
1450 | DEVICE_NAME, info->irq); | |
1451 | info->irq = 0; | |
1452 | return -EINVAL; | |
1453 | } else { | |
b0defcdb | 1454 | info->irq_cleanup = acpi_gpe_irq_cleanup; |
1da177e4 LT |
1455 | printk(" Using ACPI GPE %d\n", info->irq); |
1456 | return 0; | |
1457 | } | |
1458 | } | |
1459 | ||
1da177e4 LT |
1460 | /* |
1461 | * Defined at | |
1462 | * http://h21007.www2.hp.com/dspp/files/unprotected/devresource/Docs/TechPapers/IA64/hpspmi.pdf | |
1463 | */ | |
1464 | struct SPMITable { | |
1465 | s8 Signature[4]; | |
1466 | u32 Length; | |
1467 | u8 Revision; | |
1468 | u8 Checksum; | |
1469 | s8 OEMID[6]; | |
1470 | s8 OEMTableID[8]; | |
1471 | s8 OEMRevision[4]; | |
1472 | s8 CreatorID[4]; | |
1473 | s8 CreatorRevision[4]; | |
1474 | u8 InterfaceType; | |
1475 | u8 IPMIlegacy; | |
1476 | s16 SpecificationRevision; | |
1477 | ||
1478 | /* | |
1479 | * Bit 0 - SCI interrupt supported | |
1480 | * Bit 1 - I/O APIC/SAPIC | |
1481 | */ | |
1482 | u8 InterruptType; | |
1483 | ||
1484 | /* If bit 0 of InterruptType is set, then this is the SCI | |
1485 | interrupt in the GPEx_STS register. */ | |
1486 | u8 GPE; | |
1487 | ||
1488 | s16 Reserved; | |
1489 | ||
1490 | /* If bit 1 of InterruptType is set, then this is the I/O | |
1491 | APIC/SAPIC interrupt. */ | |
1492 | u32 GlobalSystemInterrupt; | |
1493 | ||
1494 | /* The actual register address. */ | |
1495 | struct acpi_generic_address addr; | |
1496 | ||
1497 | u8 UID[4]; | |
1498 | ||
1499 | s8 spmi_id[1]; /* A '\0' terminated array starts here. */ | |
1500 | }; | |
1501 | ||
b0defcdb | 1502 | static __devinit int try_init_acpi(struct SPMITable *spmi) |
1da177e4 LT |
1503 | { |
1504 | struct smi_info *info; | |
1da177e4 LT |
1505 | char *io_type; |
1506 | u8 addr_space; | |
1507 | ||
1da177e4 LT |
1508 | if (spmi->IPMIlegacy != 1) { |
1509 | printk(KERN_INFO "IPMI: Bad SPMI legacy %d\n", spmi->IPMIlegacy); | |
1510 | return -ENODEV; | |
1511 | } | |
1512 | ||
1513 | if (spmi->addr.address_space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) | |
1514 | addr_space = IPMI_MEM_ADDR_SPACE; | |
1515 | else | |
1516 | addr_space = IPMI_IO_ADDR_SPACE; | |
b0defcdb CM |
1517 | |
1518 | info = kzalloc(sizeof(*info), GFP_KERNEL); | |
1519 | if (!info) { | |
1520 | printk(KERN_ERR "ipmi_si: Could not allocate SI data (3)\n"); | |
1521 | return -ENOMEM; | |
1522 | } | |
1523 | ||
1524 | info->addr_source = "ACPI"; | |
1da177e4 | 1525 | |
1da177e4 LT |
1526 | /* Figure out the interface type. */ |
1527 | switch (spmi->InterfaceType) | |
1528 | { | |
1529 | case 1: /* KCS */ | |
b0defcdb | 1530 | info->si_type = SI_KCS; |
1da177e4 | 1531 | break; |
1da177e4 | 1532 | case 2: /* SMIC */ |
b0defcdb | 1533 | info->si_type = SI_SMIC; |
1da177e4 | 1534 | break; |
1da177e4 | 1535 | case 3: /* BT */ |
b0defcdb | 1536 | info->si_type = SI_BT; |
1da177e4 | 1537 | break; |
1da177e4 LT |
1538 | default: |
1539 | printk(KERN_INFO "ipmi_si: Unknown ACPI/SPMI SI type %d\n", | |
1540 | spmi->InterfaceType); | |
b0defcdb | 1541 | kfree(info); |
1da177e4 LT |
1542 | return -EIO; |
1543 | } | |
1544 | ||
1da177e4 LT |
1545 | if (spmi->InterruptType & 1) { |
1546 | /* We've got a GPE interrupt. */ | |
1547 | info->irq = spmi->GPE; | |
1548 | info->irq_setup = acpi_gpe_irq_setup; | |
1da177e4 LT |
1549 | } else if (spmi->InterruptType & 2) { |
1550 | /* We've got an APIC/SAPIC interrupt. */ | |
1551 | info->irq = spmi->GlobalSystemInterrupt; | |
1552 | info->irq_setup = std_irq_setup; | |
1da177e4 LT |
1553 | } else { |
1554 | /* Use the default interrupt setting. */ | |
1555 | info->irq = 0; | |
1556 | info->irq_setup = NULL; | |
1557 | } | |
1558 | ||
35bc37a0 CM |
1559 | if (spmi->addr.register_bit_width) { |
1560 | /* A (hopefully) properly formed register bit width. */ | |
35bc37a0 CM |
1561 | info->io.regspacing = spmi->addr.register_bit_width / 8; |
1562 | } else { | |
35bc37a0 CM |
1563 | info->io.regspacing = DEFAULT_REGSPACING; |
1564 | } | |
b0defcdb CM |
1565 | info->io.regsize = info->io.regspacing; |
1566 | info->io.regshift = spmi->addr.register_bit_offset; | |
1da177e4 LT |
1567 | |
1568 | if (spmi->addr.address_space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) { | |
1569 | io_type = "memory"; | |
1570 | info->io_setup = mem_setup; | |
b0defcdb | 1571 | info->io.addr_type = IPMI_IO_ADDR_SPACE; |
1da177e4 LT |
1572 | } else if (spmi->addr.address_space_id == ACPI_ADR_SPACE_SYSTEM_IO) { |
1573 | io_type = "I/O"; | |
1574 | info->io_setup = port_setup; | |
b0defcdb | 1575 | info->io.addr_type = IPMI_MEM_ADDR_SPACE; |
1da177e4 LT |
1576 | } else { |
1577 | kfree(info); | |
1578 | printk("ipmi_si: Unknown ACPI I/O Address type\n"); | |
1579 | return -EIO; | |
1580 | } | |
b0defcdb | 1581 | info->io.addr_data = spmi->addr.address; |
1da177e4 | 1582 | |
b0defcdb | 1583 | try_smi_init(info); |
1da177e4 | 1584 | |
1da177e4 LT |
1585 | return 0; |
1586 | } | |
b0defcdb CM |
1587 | |
1588 | static __devinit void acpi_find_bmc(void) | |
1589 | { | |
1590 | acpi_status status; | |
1591 | struct SPMITable *spmi; | |
1592 | int i; | |
1593 | ||
1594 | if (acpi_disabled) | |
1595 | return; | |
1596 | ||
1597 | if (acpi_failure) | |
1598 | return; | |
1599 | ||
1600 | for (i = 0; ; i++) { | |
1601 | status = acpi_get_firmware_table("SPMI", i+1, | |
1602 | ACPI_LOGICAL_ADDRESSING, | |
1603 | (struct acpi_table_header **) | |
1604 | &spmi); | |
1605 | if (status != AE_OK) | |
1606 | return; | |
1607 | ||
1608 | try_init_acpi(spmi); | |
1609 | } | |
1610 | } | |
1da177e4 LT |
1611 | #endif |
1612 | ||
a9fad4cc | 1613 | #ifdef CONFIG_DMI |
b0defcdb | 1614 | struct dmi_ipmi_data |
1da177e4 LT |
1615 | { |
1616 | u8 type; | |
1617 | u8 addr_space; | |
1618 | unsigned long base_addr; | |
1619 | u8 irq; | |
1620 | u8 offset; | |
1621 | u8 slave_addr; | |
b0defcdb | 1622 | }; |
1da177e4 | 1623 | |
b0defcdb CM |
1624 | static int __devinit decode_dmi(struct dmi_header *dm, |
1625 | struct dmi_ipmi_data *dmi) | |
1da177e4 | 1626 | { |
e8b33617 | 1627 | u8 *data = (u8 *)dm; |
1da177e4 LT |
1628 | unsigned long base_addr; |
1629 | u8 reg_spacing; | |
b224cd3a | 1630 | u8 len = dm->length; |
1da177e4 | 1631 | |
b0defcdb | 1632 | dmi->type = data[4]; |
1da177e4 LT |
1633 | |
1634 | memcpy(&base_addr, data+8, sizeof(unsigned long)); | |
1635 | if (len >= 0x11) { | |
1636 | if (base_addr & 1) { | |
1637 | /* I/O */ | |
1638 | base_addr &= 0xFFFE; | |
b0defcdb | 1639 | dmi->addr_space = IPMI_IO_ADDR_SPACE; |
1da177e4 LT |
1640 | } |
1641 | else { | |
1642 | /* Memory */ | |
b0defcdb | 1643 | dmi->addr_space = IPMI_MEM_ADDR_SPACE; |
1da177e4 LT |
1644 | } |
1645 | /* If bit 4 of byte 0x10 is set, then the lsb for the address | |
1646 | is odd. */ | |
b0defcdb | 1647 | dmi->base_addr = base_addr | ((data[0x10] & 0x10) >> 4); |
1da177e4 | 1648 | |
b0defcdb | 1649 | dmi->irq = data[0x11]; |
1da177e4 LT |
1650 | |
1651 | /* The top two bits of byte 0x10 hold the register spacing. */ | |
b224cd3a | 1652 | reg_spacing = (data[0x10] & 0xC0) >> 6; |
1da177e4 LT |
1653 | switch(reg_spacing){ |
1654 | case 0x00: /* Byte boundaries */ | |
b0defcdb | 1655 | dmi->offset = 1; |
1da177e4 LT |
1656 | break; |
1657 | case 0x01: /* 32-bit boundaries */ | |
b0defcdb | 1658 | dmi->offset = 4; |
1da177e4 LT |
1659 | break; |
1660 | case 0x02: /* 16-byte boundaries */ | |
b0defcdb | 1661 | dmi->offset = 16; |
1da177e4 LT |
1662 | break; |
1663 | default: | |
1664 | /* Some other interface, just ignore it. */ | |
1665 | return -EIO; | |
1666 | } | |
1667 | } else { | |
1668 | /* Old DMI spec. */ | |
92068801 CM |
1669 | /* Note that technically, the lower bit of the base |
1670 | * address should be 1 if the address is I/O and 0 if | |
1671 | * the address is in memory. So many systems get that | |
1672 | * wrong (and all that I have seen are I/O) so we just | |
1673 | * ignore that bit and assume I/O. Systems that use | |
1674 | * memory should use the newer spec, anyway. */ | |
b0defcdb CM |
1675 | dmi->base_addr = base_addr & 0xfffe; |
1676 | dmi->addr_space = IPMI_IO_ADDR_SPACE; | |
1677 | dmi->offset = 1; | |
1da177e4 LT |
1678 | } |
1679 | ||
b0defcdb | 1680 | dmi->slave_addr = data[6]; |
1da177e4 | 1681 | |
b0defcdb | 1682 | return 0; |
1da177e4 LT |
1683 | } |
1684 | ||
b0defcdb | 1685 | static __devinit void try_init_dmi(struct dmi_ipmi_data *ipmi_data) |
1da177e4 | 1686 | { |
b0defcdb | 1687 | struct smi_info *info; |
1da177e4 | 1688 | |
b0defcdb CM |
1689 | info = kzalloc(sizeof(*info), GFP_KERNEL); |
1690 | if (!info) { | |
1691 | printk(KERN_ERR | |
1692 | "ipmi_si: Could not allocate SI data\n"); | |
1693 | return; | |
1da177e4 | 1694 | } |
1da177e4 | 1695 | |
b0defcdb | 1696 | info->addr_source = "SMBIOS"; |
1da177e4 | 1697 | |
e8b33617 | 1698 | switch (ipmi_data->type) { |
b0defcdb CM |
1699 | case 0x01: /* KCS */ |
1700 | info->si_type = SI_KCS; | |
1701 | break; | |
1702 | case 0x02: /* SMIC */ | |
1703 | info->si_type = SI_SMIC; | |
1704 | break; | |
1705 | case 0x03: /* BT */ | |
1706 | info->si_type = SI_BT; | |
1707 | break; | |
1708 | default: | |
1709 | return; | |
1da177e4 | 1710 | } |
1da177e4 | 1711 | |
b0defcdb CM |
1712 | switch (ipmi_data->addr_space) { |
1713 | case IPMI_MEM_ADDR_SPACE: | |
1da177e4 | 1714 | info->io_setup = mem_setup; |
b0defcdb CM |
1715 | info->io.addr_type = IPMI_MEM_ADDR_SPACE; |
1716 | break; | |
1717 | ||
1718 | case IPMI_IO_ADDR_SPACE: | |
1da177e4 | 1719 | info->io_setup = port_setup; |
b0defcdb CM |
1720 | info->io.addr_type = IPMI_IO_ADDR_SPACE; |
1721 | break; | |
1722 | ||
1723 | default: | |
1da177e4 | 1724 | kfree(info); |
b0defcdb CM |
1725 | printk(KERN_WARNING |
1726 | "ipmi_si: Unknown SMBIOS I/O Address type: %d.\n", | |
1727 | ipmi_data->addr_space); | |
1728 | return; | |
1da177e4 | 1729 | } |
b0defcdb | 1730 | info->io.addr_data = ipmi_data->base_addr; |
1da177e4 | 1731 | |
b0defcdb CM |
1732 | info->io.regspacing = ipmi_data->offset; |
1733 | if (!info->io.regspacing) | |
1da177e4 LT |
1734 | info->io.regspacing = DEFAULT_REGSPACING; |
1735 | info->io.regsize = DEFAULT_REGSPACING; | |
b0defcdb | 1736 | info->io.regshift = 0; |
1da177e4 LT |
1737 | |
1738 | info->slave_addr = ipmi_data->slave_addr; | |
1739 | ||
b0defcdb CM |
1740 | info->irq = ipmi_data->irq; |
1741 | if (info->irq) | |
1742 | info->irq_setup = std_irq_setup; | |
1da177e4 | 1743 | |
b0defcdb CM |
1744 | try_smi_init(info); |
1745 | } | |
1da177e4 | 1746 | |
b0defcdb CM |
1747 | static void __devinit dmi_find_bmc(void) |
1748 | { | |
1749 | struct dmi_device *dev = NULL; | |
1750 | struct dmi_ipmi_data data; | |
1751 | int rv; | |
1752 | ||
1753 | while ((dev = dmi_find_device(DMI_DEV_TYPE_IPMI, NULL, dev))) { | |
397f4ebf | 1754 | memset(&data, 0, sizeof(data)); |
b0defcdb CM |
1755 | rv = decode_dmi((struct dmi_header *) dev->device_data, &data); |
1756 | if (!rv) | |
1757 | try_init_dmi(&data); | |
1758 | } | |
1da177e4 | 1759 | } |
a9fad4cc | 1760 | #endif /* CONFIG_DMI */ |
1da177e4 LT |
1761 | |
1762 | #ifdef CONFIG_PCI | |
1763 | ||
b0defcdb CM |
1764 | #define PCI_ERMC_CLASSCODE 0x0C0700 |
1765 | #define PCI_ERMC_CLASSCODE_MASK 0xffffff00 | |
1766 | #define PCI_ERMC_CLASSCODE_TYPE_MASK 0xff | |
1767 | #define PCI_ERMC_CLASSCODE_TYPE_SMIC 0x00 | |
1768 | #define PCI_ERMC_CLASSCODE_TYPE_KCS 0x01 | |
1769 | #define PCI_ERMC_CLASSCODE_TYPE_BT 0x02 | |
1770 | ||
1da177e4 LT |
1771 | #define PCI_HP_VENDOR_ID 0x103C |
1772 | #define PCI_MMC_DEVICE_ID 0x121A | |
1773 | #define PCI_MMC_ADDR_CW 0x10 | |
1774 | ||
b0defcdb CM |
1775 | static void ipmi_pci_cleanup(struct smi_info *info) |
1776 | { | |
1777 | struct pci_dev *pdev = info->addr_source_data; | |
1778 | ||
1779 | pci_disable_device(pdev); | |
1780 | } | |
1da177e4 | 1781 | |
b0defcdb CM |
1782 | static int __devinit ipmi_pci_probe(struct pci_dev *pdev, |
1783 | const struct pci_device_id *ent) | |
1da177e4 | 1784 | { |
b0defcdb CM |
1785 | int rv; |
1786 | int class_type = pdev->class & PCI_ERMC_CLASSCODE_TYPE_MASK; | |
1787 | struct smi_info *info; | |
1788 | int first_reg_offset = 0; | |
1da177e4 | 1789 | |
b0defcdb CM |
1790 | info = kzalloc(sizeof(*info), GFP_KERNEL); |
1791 | if (!info) | |
1792 | return ENOMEM; | |
1da177e4 | 1793 | |
b0defcdb | 1794 | info->addr_source = "PCI"; |
1da177e4 | 1795 | |
b0defcdb CM |
1796 | switch (class_type) { |
1797 | case PCI_ERMC_CLASSCODE_TYPE_SMIC: | |
1798 | info->si_type = SI_SMIC; | |
1799 | break; | |
1da177e4 | 1800 | |
b0defcdb CM |
1801 | case PCI_ERMC_CLASSCODE_TYPE_KCS: |
1802 | info->si_type = SI_KCS; | |
1803 | break; | |
1804 | ||
1805 | case PCI_ERMC_CLASSCODE_TYPE_BT: | |
1806 | info->si_type = SI_BT; | |
1807 | break; | |
1808 | ||
1809 | default: | |
1810 | kfree(info); | |
1811 | printk(KERN_INFO "ipmi_si: %s: Unknown IPMI type: %d\n", | |
1812 | pci_name(pdev), class_type); | |
1813 | return ENOMEM; | |
1da177e4 LT |
1814 | } |
1815 | ||
b0defcdb CM |
1816 | rv = pci_enable_device(pdev); |
1817 | if (rv) { | |
1818 | printk(KERN_ERR "ipmi_si: %s: couldn't enable PCI device\n", | |
1819 | pci_name(pdev)); | |
1820 | kfree(info); | |
1821 | return rv; | |
1da177e4 LT |
1822 | } |
1823 | ||
b0defcdb CM |
1824 | info->addr_source_cleanup = ipmi_pci_cleanup; |
1825 | info->addr_source_data = pdev; | |
1da177e4 | 1826 | |
b0defcdb CM |
1827 | if (pdev->subsystem_vendor == PCI_HP_VENDOR_ID) |
1828 | first_reg_offset = 1; | |
1da177e4 | 1829 | |
b0defcdb CM |
1830 | if (pci_resource_flags(pdev, 0) & IORESOURCE_IO) { |
1831 | info->io_setup = port_setup; | |
1832 | info->io.addr_type = IPMI_IO_ADDR_SPACE; | |
1833 | } else { | |
1834 | info->io_setup = mem_setup; | |
1835 | info->io.addr_type = IPMI_MEM_ADDR_SPACE; | |
1da177e4 | 1836 | } |
b0defcdb | 1837 | info->io.addr_data = pci_resource_start(pdev, 0); |
1da177e4 | 1838 | |
b0defcdb | 1839 | info->io.regspacing = DEFAULT_REGSPACING; |
1da177e4 | 1840 | info->io.regsize = DEFAULT_REGSPACING; |
b0defcdb | 1841 | info->io.regshift = 0; |
1da177e4 | 1842 | |
b0defcdb CM |
1843 | info->irq = pdev->irq; |
1844 | if (info->irq) | |
1845 | info->irq_setup = std_irq_setup; | |
1da177e4 | 1846 | |
50c812b2 CM |
1847 | info->dev = &pdev->dev; |
1848 | ||
b0defcdb CM |
1849 | return try_smi_init(info); |
1850 | } | |
1da177e4 | 1851 | |
b0defcdb CM |
1852 | static void __devexit ipmi_pci_remove(struct pci_dev *pdev) |
1853 | { | |
1854 | } | |
1da177e4 | 1855 | |
b0defcdb CM |
1856 | #ifdef CONFIG_PM |
1857 | static int ipmi_pci_suspend(struct pci_dev *pdev, pm_message_t state) | |
1858 | { | |
1da177e4 LT |
1859 | return 0; |
1860 | } | |
1da177e4 | 1861 | |
b0defcdb | 1862 | static int ipmi_pci_resume(struct pci_dev *pdev) |
1da177e4 | 1863 | { |
b0defcdb CM |
1864 | return 0; |
1865 | } | |
1da177e4 | 1866 | #endif |
1da177e4 | 1867 | |
b0defcdb CM |
1868 | static struct pci_device_id ipmi_pci_devices[] = { |
1869 | { PCI_DEVICE(PCI_HP_VENDOR_ID, PCI_MMC_DEVICE_ID) }, | |
1870 | { PCI_DEVICE_CLASS(PCI_ERMC_CLASSCODE, PCI_ERMC_CLASSCODE) } | |
1871 | }; | |
1872 | MODULE_DEVICE_TABLE(pci, ipmi_pci_devices); | |
1873 | ||
1874 | static struct pci_driver ipmi_pci_driver = { | |
1875 | .name = DEVICE_NAME, | |
1876 | .id_table = ipmi_pci_devices, | |
1877 | .probe = ipmi_pci_probe, | |
1878 | .remove = __devexit_p(ipmi_pci_remove), | |
1879 | #ifdef CONFIG_PM | |
1880 | .suspend = ipmi_pci_suspend, | |
1881 | .resume = ipmi_pci_resume, | |
1882 | #endif | |
1883 | }; | |
1884 | #endif /* CONFIG_PCI */ | |
1da177e4 LT |
1885 | |
1886 | ||
1887 | static int try_get_dev_id(struct smi_info *smi_info) | |
1888 | { | |
50c812b2 CM |
1889 | unsigned char msg[2]; |
1890 | unsigned char *resp; | |
1891 | unsigned long resp_len; | |
1892 | enum si_sm_result smi_result; | |
1893 | int rv = 0; | |
1da177e4 LT |
1894 | |
1895 | resp = kmalloc(IPMI_MAX_MSG_LENGTH, GFP_KERNEL); | |
b0defcdb | 1896 | if (!resp) |
1da177e4 LT |
1897 | return -ENOMEM; |
1898 | ||
1899 | /* Do a Get Device ID command, since it comes back with some | |
1900 | useful info. */ | |
1901 | msg[0] = IPMI_NETFN_APP_REQUEST << 2; | |
1902 | msg[1] = IPMI_GET_DEVICE_ID_CMD; | |
1903 | smi_info->handlers->start_transaction(smi_info->si_sm, msg, 2); | |
1904 | ||
1905 | smi_result = smi_info->handlers->event(smi_info->si_sm, 0); | |
1906 | for (;;) | |
1907 | { | |
c3e7e791 CM |
1908 | if (smi_result == SI_SM_CALL_WITH_DELAY || |
1909 | smi_result == SI_SM_CALL_WITH_TICK_DELAY) { | |
da4cd8df | 1910 | schedule_timeout_uninterruptible(1); |
1da177e4 LT |
1911 | smi_result = smi_info->handlers->event( |
1912 | smi_info->si_sm, 100); | |
1913 | } | |
1914 | else if (smi_result == SI_SM_CALL_WITHOUT_DELAY) | |
1915 | { | |
1916 | smi_result = smi_info->handlers->event( | |
1917 | smi_info->si_sm, 0); | |
1918 | } | |
1919 | else | |
1920 | break; | |
1921 | } | |
1922 | if (smi_result == SI_SM_HOSED) { | |
1923 | /* We couldn't get the state machine to run, so whatever's at | |
1924 | the port is probably not an IPMI SMI interface. */ | |
1925 | rv = -ENODEV; | |
1926 | goto out; | |
1927 | } | |
1928 | ||
1929 | /* Otherwise, we got some data. */ | |
1930 | resp_len = smi_info->handlers->get_result(smi_info->si_sm, | |
1931 | resp, IPMI_MAX_MSG_LENGTH); | |
50c812b2 | 1932 | if (resp_len < 14) { |
1da177e4 LT |
1933 | /* That's odd, it should be longer. */ |
1934 | rv = -EINVAL; | |
1935 | goto out; | |
1936 | } | |
1937 | ||
1938 | if ((resp[1] != IPMI_GET_DEVICE_ID_CMD) || (resp[2] != 0)) { | |
1939 | /* That's odd, it shouldn't be able to fail. */ | |
1940 | rv = -EINVAL; | |
1941 | goto out; | |
1942 | } | |
1943 | ||
1944 | /* Record info from the get device id, in case we need it. */ | |
50c812b2 | 1945 | ipmi_demangle_device_id(resp+3, resp_len-3, &smi_info->device_id); |
1da177e4 LT |
1946 | |
1947 | out: | |
1948 | kfree(resp); | |
1949 | return rv; | |
1950 | } | |
1951 | ||
1952 | static int type_file_read_proc(char *page, char **start, off_t off, | |
1953 | int count, int *eof, void *data) | |
1954 | { | |
1955 | char *out = (char *) page; | |
1956 | struct smi_info *smi = data; | |
1957 | ||
1958 | switch (smi->si_type) { | |
1959 | case SI_KCS: | |
1960 | return sprintf(out, "kcs\n"); | |
1961 | case SI_SMIC: | |
1962 | return sprintf(out, "smic\n"); | |
1963 | case SI_BT: | |
1964 | return sprintf(out, "bt\n"); | |
1965 | default: | |
1966 | return 0; | |
1967 | } | |
1968 | } | |
1969 | ||
1970 | static int stat_file_read_proc(char *page, char **start, off_t off, | |
1971 | int count, int *eof, void *data) | |
1972 | { | |
1973 | char *out = (char *) page; | |
1974 | struct smi_info *smi = data; | |
1975 | ||
1976 | out += sprintf(out, "interrupts_enabled: %d\n", | |
b0defcdb | 1977 | smi->irq && !smi->interrupt_disabled); |
1da177e4 LT |
1978 | out += sprintf(out, "short_timeouts: %ld\n", |
1979 | smi->short_timeouts); | |
1980 | out += sprintf(out, "long_timeouts: %ld\n", | |
1981 | smi->long_timeouts); | |
1982 | out += sprintf(out, "timeout_restarts: %ld\n", | |
1983 | smi->timeout_restarts); | |
1984 | out += sprintf(out, "idles: %ld\n", | |
1985 | smi->idles); | |
1986 | out += sprintf(out, "interrupts: %ld\n", | |
1987 | smi->interrupts); | |
1988 | out += sprintf(out, "attentions: %ld\n", | |
1989 | smi->attentions); | |
1990 | out += sprintf(out, "flag_fetches: %ld\n", | |
1991 | smi->flag_fetches); | |
1992 | out += sprintf(out, "hosed_count: %ld\n", | |
1993 | smi->hosed_count); | |
1994 | out += sprintf(out, "complete_transactions: %ld\n", | |
1995 | smi->complete_transactions); | |
1996 | out += sprintf(out, "events: %ld\n", | |
1997 | smi->events); | |
1998 | out += sprintf(out, "watchdog_pretimeouts: %ld\n", | |
1999 | smi->watchdog_pretimeouts); | |
2000 | out += sprintf(out, "incoming_messages: %ld\n", | |
2001 | smi->incoming_messages); | |
2002 | ||
2003 | return (out - ((char *) page)); | |
2004 | } | |
2005 | ||
3ae0e0f9 CM |
2006 | /* |
2007 | * oem_data_avail_to_receive_msg_avail | |
2008 | * @info - smi_info structure with msg_flags set | |
2009 | * | |
2010 | * Converts flags from OEM_DATA_AVAIL to RECEIVE_MSG_AVAIL | |
2011 | * Returns 1 indicating need to re-run handle_flags(). | |
2012 | */ | |
2013 | static int oem_data_avail_to_receive_msg_avail(struct smi_info *smi_info) | |
2014 | { | |
e8b33617 CM |
2015 | smi_info->msg_flags = ((smi_info->msg_flags & ~OEM_DATA_AVAIL) | |
2016 | RECEIVE_MSG_AVAIL); | |
3ae0e0f9 CM |
2017 | return 1; |
2018 | } | |
2019 | ||
2020 | /* | |
2021 | * setup_dell_poweredge_oem_data_handler | |
2022 | * @info - smi_info.device_id must be populated | |
2023 | * | |
2024 | * Systems that match, but have firmware version < 1.40 may assert | |
2025 | * OEM0_DATA_AVAIL on their own, without being told via Set Flags that | |
2026 | * it's safe to do so. Such systems will de-assert OEM1_DATA_AVAIL | |
2027 | * upon receipt of IPMI_GET_MSG_CMD, so we should treat these flags | |
2028 | * as RECEIVE_MSG_AVAIL instead. | |
2029 | * | |
2030 | * As Dell has no plans to release IPMI 1.5 firmware that *ever* | |
2031 | * assert the OEM[012] bits, and if it did, the driver would have to | |
2032 | * change to handle that properly, we don't actually check for the | |
2033 | * firmware version. | |
2034 | * Device ID = 0x20 BMC on PowerEdge 8G servers | |
2035 | * Device Revision = 0x80 | |
2036 | * Firmware Revision1 = 0x01 BMC version 1.40 | |
2037 | * Firmware Revision2 = 0x40 BCD encoded | |
2038 | * IPMI Version = 0x51 IPMI 1.5 | |
2039 | * Manufacturer ID = A2 02 00 Dell IANA | |
2040 | * | |
d5a2b89a CM |
2041 | * Additionally, PowerEdge systems with IPMI < 1.5 may also assert |
2042 | * OEM0_DATA_AVAIL and needs to be treated as RECEIVE_MSG_AVAIL. | |
2043 | * | |
3ae0e0f9 CM |
2044 | */ |
2045 | #define DELL_POWEREDGE_8G_BMC_DEVICE_ID 0x20 | |
2046 | #define DELL_POWEREDGE_8G_BMC_DEVICE_REV 0x80 | |
2047 | #define DELL_POWEREDGE_8G_BMC_IPMI_VERSION 0x51 | |
50c812b2 | 2048 | #define DELL_IANA_MFR_ID 0x0002a2 |
3ae0e0f9 CM |
2049 | static void setup_dell_poweredge_oem_data_handler(struct smi_info *smi_info) |
2050 | { | |
2051 | struct ipmi_device_id *id = &smi_info->device_id; | |
50c812b2 | 2052 | if (id->manufacturer_id == DELL_IANA_MFR_ID) { |
d5a2b89a CM |
2053 | if (id->device_id == DELL_POWEREDGE_8G_BMC_DEVICE_ID && |
2054 | id->device_revision == DELL_POWEREDGE_8G_BMC_DEVICE_REV && | |
50c812b2 | 2055 | id->ipmi_version == DELL_POWEREDGE_8G_BMC_IPMI_VERSION) { |
d5a2b89a CM |
2056 | smi_info->oem_data_avail_handler = |
2057 | oem_data_avail_to_receive_msg_avail; | |
2058 | } | |
2059 | else if (ipmi_version_major(id) < 1 || | |
2060 | (ipmi_version_major(id) == 1 && | |
2061 | ipmi_version_minor(id) < 5)) { | |
2062 | smi_info->oem_data_avail_handler = | |
2063 | oem_data_avail_to_receive_msg_avail; | |
2064 | } | |
3ae0e0f9 CM |
2065 | } |
2066 | } | |
2067 | ||
ea94027b CM |
2068 | #define CANNOT_RETURN_REQUESTED_LENGTH 0xCA |
2069 | static void return_hosed_msg_badsize(struct smi_info *smi_info) | |
2070 | { | |
2071 | struct ipmi_smi_msg *msg = smi_info->curr_msg; | |
2072 | ||
2073 | /* Make it a reponse */ | |
2074 | msg->rsp[0] = msg->data[0] | 4; | |
2075 | msg->rsp[1] = msg->data[1]; | |
2076 | msg->rsp[2] = CANNOT_RETURN_REQUESTED_LENGTH; | |
2077 | msg->rsp_size = 3; | |
2078 | smi_info->curr_msg = NULL; | |
2079 | deliver_recv_msg(smi_info, msg); | |
2080 | } | |
2081 | ||
2082 | /* | |
2083 | * dell_poweredge_bt_xaction_handler | |
2084 | * @info - smi_info.device_id must be populated | |
2085 | * | |
2086 | * Dell PowerEdge servers with the BT interface (x6xx and 1750) will | |
2087 | * not respond to a Get SDR command if the length of the data | |
2088 | * requested is exactly 0x3A, which leads to command timeouts and no | |
2089 | * data returned. This intercepts such commands, and causes userspace | |
2090 | * callers to try again with a different-sized buffer, which succeeds. | |
2091 | */ | |
2092 | ||
2093 | #define STORAGE_NETFN 0x0A | |
2094 | #define STORAGE_CMD_GET_SDR 0x23 | |
2095 | static int dell_poweredge_bt_xaction_handler(struct notifier_block *self, | |
2096 | unsigned long unused, | |
2097 | void *in) | |
2098 | { | |
2099 | struct smi_info *smi_info = in; | |
2100 | unsigned char *data = smi_info->curr_msg->data; | |
2101 | unsigned int size = smi_info->curr_msg->data_size; | |
2102 | if (size >= 8 && | |
2103 | (data[0]>>2) == STORAGE_NETFN && | |
2104 | data[1] == STORAGE_CMD_GET_SDR && | |
2105 | data[7] == 0x3A) { | |
2106 | return_hosed_msg_badsize(smi_info); | |
2107 | return NOTIFY_STOP; | |
2108 | } | |
2109 | return NOTIFY_DONE; | |
2110 | } | |
2111 | ||
2112 | static struct notifier_block dell_poweredge_bt_xaction_notifier = { | |
2113 | .notifier_call = dell_poweredge_bt_xaction_handler, | |
2114 | }; | |
2115 | ||
2116 | /* | |
2117 | * setup_dell_poweredge_bt_xaction_handler | |
2118 | * @info - smi_info.device_id must be filled in already | |
2119 | * | |
2120 | * Fills in smi_info.device_id.start_transaction_pre_hook | |
2121 | * when we know what function to use there. | |
2122 | */ | |
2123 | static void | |
2124 | setup_dell_poweredge_bt_xaction_handler(struct smi_info *smi_info) | |
2125 | { | |
2126 | struct ipmi_device_id *id = &smi_info->device_id; | |
50c812b2 | 2127 | if (id->manufacturer_id == DELL_IANA_MFR_ID && |
ea94027b CM |
2128 | smi_info->si_type == SI_BT) |
2129 | register_xaction_notifier(&dell_poweredge_bt_xaction_notifier); | |
2130 | } | |
2131 | ||
3ae0e0f9 CM |
2132 | /* |
2133 | * setup_oem_data_handler | |
2134 | * @info - smi_info.device_id must be filled in already | |
2135 | * | |
2136 | * Fills in smi_info.device_id.oem_data_available_handler | |
2137 | * when we know what function to use there. | |
2138 | */ | |
2139 | ||
2140 | static void setup_oem_data_handler(struct smi_info *smi_info) | |
2141 | { | |
2142 | setup_dell_poweredge_oem_data_handler(smi_info); | |
2143 | } | |
2144 | ||
ea94027b CM |
2145 | static void setup_xaction_handlers(struct smi_info *smi_info) |
2146 | { | |
2147 | setup_dell_poweredge_bt_xaction_handler(smi_info); | |
2148 | } | |
2149 | ||
a9a2c44f CM |
2150 | static inline void wait_for_timer_and_thread(struct smi_info *smi_info) |
2151 | { | |
453823ba CM |
2152 | if (smi_info->intf) { |
2153 | /* The timer and thread are only running if the | |
2154 | interface has been started up and registered. */ | |
2155 | if (smi_info->thread != NULL) | |
2156 | kthread_stop(smi_info->thread); | |
2157 | del_timer_sync(&smi_info->si_timer); | |
2158 | } | |
a9a2c44f CM |
2159 | } |
2160 | ||
7420884c | 2161 | static __devinitdata struct ipmi_default_vals |
b0defcdb CM |
2162 | { |
2163 | int type; | |
2164 | int port; | |
7420884c | 2165 | } ipmi_defaults[] = |
b0defcdb CM |
2166 | { |
2167 | { .type = SI_KCS, .port = 0xca2 }, | |
2168 | { .type = SI_SMIC, .port = 0xca9 }, | |
2169 | { .type = SI_BT, .port = 0xe4 }, | |
2170 | { .port = 0 } | |
2171 | }; | |
2172 | ||
2173 | static __devinit void default_find_bmc(void) | |
2174 | { | |
2175 | struct smi_info *info; | |
2176 | int i; | |
2177 | ||
2178 | for (i = 0; ; i++) { | |
2179 | if (!ipmi_defaults[i].port) | |
2180 | break; | |
2181 | ||
2182 | info = kzalloc(sizeof(*info), GFP_KERNEL); | |
2183 | if (!info) | |
2184 | return; | |
2185 | ||
2186 | info->addr_source = NULL; | |
2187 | ||
2188 | info->si_type = ipmi_defaults[i].type; | |
2189 | info->io_setup = port_setup; | |
2190 | info->io.addr_data = ipmi_defaults[i].port; | |
2191 | info->io.addr_type = IPMI_IO_ADDR_SPACE; | |
2192 | ||
2193 | info->io.addr = NULL; | |
2194 | info->io.regspacing = DEFAULT_REGSPACING; | |
2195 | info->io.regsize = DEFAULT_REGSPACING; | |
2196 | info->io.regshift = 0; | |
2197 | ||
2198 | if (try_smi_init(info) == 0) { | |
2199 | /* Found one... */ | |
2200 | printk(KERN_INFO "ipmi_si: Found default %s state" | |
2201 | " machine at %s address 0x%lx\n", | |
2202 | si_to_str[info->si_type], | |
2203 | addr_space_to_str[info->io.addr_type], | |
2204 | info->io.addr_data); | |
2205 | return; | |
2206 | } | |
2207 | } | |
2208 | } | |
2209 | ||
2210 | static int is_new_interface(struct smi_info *info) | |
1da177e4 | 2211 | { |
b0defcdb | 2212 | struct smi_info *e; |
1da177e4 | 2213 | |
b0defcdb CM |
2214 | list_for_each_entry(e, &smi_infos, link) { |
2215 | if (e->io.addr_type != info->io.addr_type) | |
2216 | continue; | |
2217 | if (e->io.addr_data == info->io.addr_data) | |
2218 | return 0; | |
2219 | } | |
1da177e4 | 2220 | |
b0defcdb CM |
2221 | return 1; |
2222 | } | |
1da177e4 | 2223 | |
b0defcdb CM |
2224 | static int try_smi_init(struct smi_info *new_smi) |
2225 | { | |
2226 | int rv; | |
2227 | ||
2228 | if (new_smi->addr_source) { | |
2229 | printk(KERN_INFO "ipmi_si: Trying %s-specified %s state" | |
2230 | " machine at %s address 0x%lx, slave address 0x%x," | |
2231 | " irq %d\n", | |
2232 | new_smi->addr_source, | |
2233 | si_to_str[new_smi->si_type], | |
2234 | addr_space_to_str[new_smi->io.addr_type], | |
2235 | new_smi->io.addr_data, | |
2236 | new_smi->slave_addr, new_smi->irq); | |
2237 | } | |
2238 | ||
d6dfd131 | 2239 | mutex_lock(&smi_infos_lock); |
b0defcdb CM |
2240 | if (!is_new_interface(new_smi)) { |
2241 | printk(KERN_WARNING "ipmi_si: duplicate interface\n"); | |
2242 | rv = -EBUSY; | |
2243 | goto out_err; | |
2244 | } | |
1da177e4 LT |
2245 | |
2246 | /* So we know not to free it unless we have allocated one. */ | |
2247 | new_smi->intf = NULL; | |
2248 | new_smi->si_sm = NULL; | |
2249 | new_smi->handlers = NULL; | |
2250 | ||
b0defcdb CM |
2251 | switch (new_smi->si_type) { |
2252 | case SI_KCS: | |
1da177e4 | 2253 | new_smi->handlers = &kcs_smi_handlers; |
b0defcdb CM |
2254 | break; |
2255 | ||
2256 | case SI_SMIC: | |
1da177e4 | 2257 | new_smi->handlers = &smic_smi_handlers; |
b0defcdb CM |
2258 | break; |
2259 | ||
2260 | case SI_BT: | |
1da177e4 | 2261 | new_smi->handlers = &bt_smi_handlers; |
b0defcdb CM |
2262 | break; |
2263 | ||
2264 | default: | |
1da177e4 LT |
2265 | /* No support for anything else yet. */ |
2266 | rv = -EIO; | |
2267 | goto out_err; | |
2268 | } | |
2269 | ||
2270 | /* Allocate the state machine's data and initialize it. */ | |
2271 | new_smi->si_sm = kmalloc(new_smi->handlers->size(), GFP_KERNEL); | |
b0defcdb | 2272 | if (!new_smi->si_sm) { |
1da177e4 LT |
2273 | printk(" Could not allocate state machine memory\n"); |
2274 | rv = -ENOMEM; | |
2275 | goto out_err; | |
2276 | } | |
2277 | new_smi->io_size = new_smi->handlers->init_data(new_smi->si_sm, | |
2278 | &new_smi->io); | |
2279 | ||
2280 | /* Now that we know the I/O size, we can set up the I/O. */ | |
2281 | rv = new_smi->io_setup(new_smi); | |
2282 | if (rv) { | |
2283 | printk(" Could not set up I/O space\n"); | |
2284 | goto out_err; | |
2285 | } | |
2286 | ||
2287 | spin_lock_init(&(new_smi->si_lock)); | |
2288 | spin_lock_init(&(new_smi->msg_lock)); | |
2289 | spin_lock_init(&(new_smi->count_lock)); | |
2290 | ||
2291 | /* Do low-level detection first. */ | |
2292 | if (new_smi->handlers->detect(new_smi->si_sm)) { | |
b0defcdb CM |
2293 | if (new_smi->addr_source) |
2294 | printk(KERN_INFO "ipmi_si: Interface detection" | |
2295 | " failed\n"); | |
1da177e4 LT |
2296 | rv = -ENODEV; |
2297 | goto out_err; | |
2298 | } | |
2299 | ||
2300 | /* Attempt a get device id command. If it fails, we probably | |
b0defcdb | 2301 | don't have a BMC here. */ |
1da177e4 | 2302 | rv = try_get_dev_id(new_smi); |
b0defcdb CM |
2303 | if (rv) { |
2304 | if (new_smi->addr_source) | |
2305 | printk(KERN_INFO "ipmi_si: There appears to be no BMC" | |
2306 | " at this location\n"); | |
1da177e4 | 2307 | goto out_err; |
b0defcdb | 2308 | } |
1da177e4 | 2309 | |
3ae0e0f9 | 2310 | setup_oem_data_handler(new_smi); |
ea94027b | 2311 | setup_xaction_handlers(new_smi); |
3ae0e0f9 | 2312 | |
1da177e4 | 2313 | /* Try to claim any interrupts. */ |
b0defcdb CM |
2314 | if (new_smi->irq_setup) |
2315 | new_smi->irq_setup(new_smi); | |
1da177e4 LT |
2316 | |
2317 | INIT_LIST_HEAD(&(new_smi->xmit_msgs)); | |
2318 | INIT_LIST_HEAD(&(new_smi->hp_xmit_msgs)); | |
2319 | new_smi->curr_msg = NULL; | |
2320 | atomic_set(&new_smi->req_events, 0); | |
2321 | new_smi->run_to_completion = 0; | |
2322 | ||
2323 | new_smi->interrupt_disabled = 0; | |
a9a2c44f | 2324 | atomic_set(&new_smi->stop_operation, 0); |
b0defcdb CM |
2325 | new_smi->intf_num = smi_num; |
2326 | smi_num++; | |
1da177e4 LT |
2327 | |
2328 | /* Start clearing the flags before we enable interrupts or the | |
2329 | timer to avoid racing with the timer. */ | |
2330 | start_clear_flags(new_smi); | |
2331 | /* IRQ is defined to be set when non-zero. */ | |
2332 | if (new_smi->irq) | |
2333 | new_smi->si_state = SI_CLEARING_FLAGS_THEN_SET_IRQ; | |
2334 | ||
50c812b2 CM |
2335 | if (!new_smi->dev) { |
2336 | /* If we don't already have a device from something | |
2337 | * else (like PCI), then register a new one. */ | |
2338 | new_smi->pdev = platform_device_alloc("ipmi_si", | |
2339 | new_smi->intf_num); | |
2340 | if (rv) { | |
2341 | printk(KERN_ERR | |
2342 | "ipmi_si_intf:" | |
2343 | " Unable to allocate platform device\n"); | |
453823ba | 2344 | goto out_err; |
50c812b2 CM |
2345 | } |
2346 | new_smi->dev = &new_smi->pdev->dev; | |
2347 | new_smi->dev->driver = &ipmi_driver; | |
2348 | ||
2349 | rv = platform_device_register(new_smi->pdev); | |
2350 | if (rv) { | |
2351 | printk(KERN_ERR | |
2352 | "ipmi_si_intf:" | |
2353 | " Unable to register system interface device:" | |
2354 | " %d\n", | |
2355 | rv); | |
453823ba | 2356 | goto out_err; |
50c812b2 CM |
2357 | } |
2358 | new_smi->dev_registered = 1; | |
2359 | } | |
2360 | ||
1da177e4 LT |
2361 | rv = ipmi_register_smi(&handlers, |
2362 | new_smi, | |
50c812b2 CM |
2363 | &new_smi->device_id, |
2364 | new_smi->dev, | |
453823ba | 2365 | new_smi->slave_addr); |
1da177e4 LT |
2366 | if (rv) { |
2367 | printk(KERN_ERR | |
2368 | "ipmi_si: Unable to register device: error %d\n", | |
2369 | rv); | |
2370 | goto out_err_stop_timer; | |
2371 | } | |
2372 | ||
2373 | rv = ipmi_smi_add_proc_entry(new_smi->intf, "type", | |
2374 | type_file_read_proc, NULL, | |
2375 | new_smi, THIS_MODULE); | |
2376 | if (rv) { | |
2377 | printk(KERN_ERR | |
2378 | "ipmi_si: Unable to create proc entry: %d\n", | |
2379 | rv); | |
2380 | goto out_err_stop_timer; | |
2381 | } | |
2382 | ||
2383 | rv = ipmi_smi_add_proc_entry(new_smi->intf, "si_stats", | |
2384 | stat_file_read_proc, NULL, | |
2385 | new_smi, THIS_MODULE); | |
2386 | if (rv) { | |
2387 | printk(KERN_ERR | |
2388 | "ipmi_si: Unable to create proc entry: %d\n", | |
2389 | rv); | |
2390 | goto out_err_stop_timer; | |
2391 | } | |
2392 | ||
b0defcdb CM |
2393 | list_add_tail(&new_smi->link, &smi_infos); |
2394 | ||
d6dfd131 | 2395 | mutex_unlock(&smi_infos_lock); |
1da177e4 | 2396 | |
b0defcdb | 2397 | printk(" IPMI %s interface initialized\n",si_to_str[new_smi->si_type]); |
1da177e4 LT |
2398 | |
2399 | return 0; | |
2400 | ||
2401 | out_err_stop_timer: | |
a9a2c44f CM |
2402 | atomic_inc(&new_smi->stop_operation); |
2403 | wait_for_timer_and_thread(new_smi); | |
1da177e4 LT |
2404 | |
2405 | out_err: | |
2406 | if (new_smi->intf) | |
2407 | ipmi_unregister_smi(new_smi->intf); | |
2408 | ||
b0defcdb CM |
2409 | if (new_smi->irq_cleanup) |
2410 | new_smi->irq_cleanup(new_smi); | |
1da177e4 LT |
2411 | |
2412 | /* Wait until we know that we are out of any interrupt | |
2413 | handlers might have been running before we freed the | |
2414 | interrupt. */ | |
fbd568a3 | 2415 | synchronize_sched(); |
1da177e4 LT |
2416 | |
2417 | if (new_smi->si_sm) { | |
2418 | if (new_smi->handlers) | |
2419 | new_smi->handlers->cleanup(new_smi->si_sm); | |
2420 | kfree(new_smi->si_sm); | |
2421 | } | |
b0defcdb CM |
2422 | if (new_smi->addr_source_cleanup) |
2423 | new_smi->addr_source_cleanup(new_smi); | |
7767e126 PG |
2424 | if (new_smi->io_cleanup) |
2425 | new_smi->io_cleanup(new_smi); | |
1da177e4 | 2426 | |
50c812b2 CM |
2427 | if (new_smi->dev_registered) |
2428 | platform_device_unregister(new_smi->pdev); | |
2429 | ||
2430 | kfree(new_smi); | |
2431 | ||
d6dfd131 | 2432 | mutex_unlock(&smi_infos_lock); |
b0defcdb | 2433 | |
1da177e4 LT |
2434 | return rv; |
2435 | } | |
2436 | ||
b0defcdb | 2437 | static __devinit int init_ipmi_si(void) |
1da177e4 | 2438 | { |
1da177e4 LT |
2439 | int i; |
2440 | char *str; | |
50c812b2 | 2441 | int rv; |
1da177e4 LT |
2442 | |
2443 | if (initialized) | |
2444 | return 0; | |
2445 | initialized = 1; | |
2446 | ||
50c812b2 CM |
2447 | /* Register the device drivers. */ |
2448 | rv = driver_register(&ipmi_driver); | |
2449 | if (rv) { | |
2450 | printk(KERN_ERR | |
2451 | "init_ipmi_si: Unable to register driver: %d\n", | |
2452 | rv); | |
2453 | return rv; | |
2454 | } | |
2455 | ||
2456 | ||
1da177e4 LT |
2457 | /* Parse out the si_type string into its components. */ |
2458 | str = si_type_str; | |
2459 | if (*str != '\0') { | |
e8b33617 | 2460 | for (i = 0; (i < SI_MAX_PARMS) && (*str != '\0'); i++) { |
1da177e4 LT |
2461 | si_type[i] = str; |
2462 | str = strchr(str, ','); | |
2463 | if (str) { | |
2464 | *str = '\0'; | |
2465 | str++; | |
2466 | } else { | |
2467 | break; | |
2468 | } | |
2469 | } | |
2470 | } | |
2471 | ||
1fdd75bd | 2472 | printk(KERN_INFO "IPMI System Interface driver.\n"); |
1da177e4 | 2473 | |
b0defcdb CM |
2474 | hardcode_find_bmc(); |
2475 | ||
a9fad4cc | 2476 | #ifdef CONFIG_DMI |
b224cd3a | 2477 | dmi_find_bmc(); |
1da177e4 LT |
2478 | #endif |
2479 | ||
b0defcdb CM |
2480 | #ifdef CONFIG_ACPI |
2481 | if (si_trydefaults) | |
2482 | acpi_find_bmc(); | |
2483 | #endif | |
1da177e4 | 2484 | |
b0defcdb CM |
2485 | #ifdef CONFIG_PCI |
2486 | pci_module_init(&ipmi_pci_driver); | |
2487 | #endif | |
2488 | ||
2489 | if (si_trydefaults) { | |
d6dfd131 | 2490 | mutex_lock(&smi_infos_lock); |
b0defcdb CM |
2491 | if (list_empty(&smi_infos)) { |
2492 | /* No BMC was found, try defaults. */ | |
d6dfd131 | 2493 | mutex_unlock(&smi_infos_lock); |
b0defcdb CM |
2494 | default_find_bmc(); |
2495 | } else { | |
d6dfd131 | 2496 | mutex_unlock(&smi_infos_lock); |
b0defcdb | 2497 | } |
1da177e4 LT |
2498 | } |
2499 | ||
d6dfd131 | 2500 | mutex_lock(&smi_infos_lock); |
b0defcdb | 2501 | if (list_empty(&smi_infos)) { |
d6dfd131 | 2502 | mutex_unlock(&smi_infos_lock); |
b0defcdb CM |
2503 | #ifdef CONFIG_PCI |
2504 | pci_unregister_driver(&ipmi_pci_driver); | |
2505 | #endif | |
55ebcc38 | 2506 | driver_unregister(&ipmi_driver); |
1da177e4 LT |
2507 | printk("ipmi_si: Unable to find any System Interface(s)\n"); |
2508 | return -ENODEV; | |
b0defcdb | 2509 | } else { |
d6dfd131 | 2510 | mutex_unlock(&smi_infos_lock); |
b0defcdb | 2511 | return 0; |
1da177e4 | 2512 | } |
1da177e4 LT |
2513 | } |
2514 | module_init(init_ipmi_si); | |
2515 | ||
b0defcdb | 2516 | static void __devexit cleanup_one_si(struct smi_info *to_clean) |
1da177e4 LT |
2517 | { |
2518 | int rv; | |
2519 | unsigned long flags; | |
2520 | ||
b0defcdb | 2521 | if (!to_clean) |
1da177e4 LT |
2522 | return; |
2523 | ||
b0defcdb CM |
2524 | list_del(&to_clean->link); |
2525 | ||
1da177e4 LT |
2526 | /* Tell the timer and interrupt handlers that we are shutting |
2527 | down. */ | |
2528 | spin_lock_irqsave(&(to_clean->si_lock), flags); | |
2529 | spin_lock(&(to_clean->msg_lock)); | |
2530 | ||
a9a2c44f | 2531 | atomic_inc(&to_clean->stop_operation); |
b0defcdb CM |
2532 | |
2533 | if (to_clean->irq_cleanup) | |
2534 | to_clean->irq_cleanup(to_clean); | |
1da177e4 LT |
2535 | |
2536 | spin_unlock(&(to_clean->msg_lock)); | |
2537 | spin_unlock_irqrestore(&(to_clean->si_lock), flags); | |
2538 | ||
2539 | /* Wait until we know that we are out of any interrupt | |
2540 | handlers might have been running before we freed the | |
2541 | interrupt. */ | |
fbd568a3 | 2542 | synchronize_sched(); |
1da177e4 | 2543 | |
a9a2c44f | 2544 | wait_for_timer_and_thread(to_clean); |
1da177e4 LT |
2545 | |
2546 | /* Interrupts and timeouts are stopped, now make sure the | |
2547 | interface is in a clean state. */ | |
e8b33617 | 2548 | while (to_clean->curr_msg || (to_clean->si_state != SI_NORMAL)) { |
1da177e4 | 2549 | poll(to_clean); |
da4cd8df | 2550 | schedule_timeout_uninterruptible(1); |
1da177e4 LT |
2551 | } |
2552 | ||
2553 | rv = ipmi_unregister_smi(to_clean->intf); | |
2554 | if (rv) { | |
2555 | printk(KERN_ERR | |
2556 | "ipmi_si: Unable to unregister device: errno=%d\n", | |
2557 | rv); | |
2558 | } | |
2559 | ||
2560 | to_clean->handlers->cleanup(to_clean->si_sm); | |
2561 | ||
2562 | kfree(to_clean->si_sm); | |
2563 | ||
b0defcdb CM |
2564 | if (to_clean->addr_source_cleanup) |
2565 | to_clean->addr_source_cleanup(to_clean); | |
7767e126 PG |
2566 | if (to_clean->io_cleanup) |
2567 | to_clean->io_cleanup(to_clean); | |
50c812b2 CM |
2568 | |
2569 | if (to_clean->dev_registered) | |
2570 | platform_device_unregister(to_clean->pdev); | |
2571 | ||
2572 | kfree(to_clean); | |
1da177e4 LT |
2573 | } |
2574 | ||
2575 | static __exit void cleanup_ipmi_si(void) | |
2576 | { | |
b0defcdb | 2577 | struct smi_info *e, *tmp_e; |
1da177e4 | 2578 | |
b0defcdb | 2579 | if (!initialized) |
1da177e4 LT |
2580 | return; |
2581 | ||
b0defcdb CM |
2582 | #ifdef CONFIG_PCI |
2583 | pci_unregister_driver(&ipmi_pci_driver); | |
2584 | #endif | |
2585 | ||
d6dfd131 | 2586 | mutex_lock(&smi_infos_lock); |
b0defcdb CM |
2587 | list_for_each_entry_safe(e, tmp_e, &smi_infos, link) |
2588 | cleanup_one_si(e); | |
d6dfd131 | 2589 | mutex_unlock(&smi_infos_lock); |
50c812b2 CM |
2590 | |
2591 | driver_unregister(&ipmi_driver); | |
1da177e4 LT |
2592 | } |
2593 | module_exit(cleanup_ipmi_si); | |
2594 | ||
2595 | MODULE_LICENSE("GPL"); | |
1fdd75bd CM |
2596 | MODULE_AUTHOR("Corey Minyard <minyard@mvista.com>"); |
2597 | MODULE_DESCRIPTION("Interface to the IPMI driver for the KCS, SMIC, and BT system interfaces."); |