Commit | Line | Data |
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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. | |
dba9b4f6 | 12 | * Copyright 2006 IBM Corp., Christian Krafft <krafft@de.ibm.com> |
1da177e4 LT |
13 | * |
14 | * This program is free software; you can redistribute it and/or modify it | |
15 | * under the terms of the GNU General Public License as published by the | |
16 | * Free Software Foundation; either version 2 of the License, or (at your | |
17 | * option) any later version. | |
18 | * | |
19 | * | |
20 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
21 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
22 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. | |
23 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | |
24 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, | |
25 | * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS | |
26 | * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND | |
27 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR | |
28 | * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE | |
29 | * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
30 | * | |
31 | * You should have received a copy of the GNU General Public License along | |
32 | * with this program; if not, write to the Free Software Foundation, Inc., | |
33 | * 675 Mass Ave, Cambridge, MA 02139, USA. | |
34 | */ | |
35 | ||
36 | /* | |
37 | * This file holds the "policy" for the interface to the SMI state | |
38 | * machine. It does the configuration, handles timers and interrupts, | |
39 | * and drives the real SMI state machine. | |
40 | */ | |
41 | ||
1da177e4 LT |
42 | #include <linux/module.h> |
43 | #include <linux/moduleparam.h> | |
44 | #include <asm/system.h> | |
45 | #include <linux/sched.h> | |
46 | #include <linux/timer.h> | |
47 | #include <linux/errno.h> | |
48 | #include <linux/spinlock.h> | |
49 | #include <linux/slab.h> | |
50 | #include <linux/delay.h> | |
51 | #include <linux/list.h> | |
52 | #include <linux/pci.h> | |
53 | #include <linux/ioport.h> | |
ea94027b | 54 | #include <linux/notifier.h> |
b0defcdb | 55 | #include <linux/mutex.h> |
e9a705a0 | 56 | #include <linux/kthread.h> |
1da177e4 | 57 | #include <asm/irq.h> |
1da177e4 LT |
58 | #include <linux/interrupt.h> |
59 | #include <linux/rcupdate.h> | |
60 | #include <linux/ipmi_smi.h> | |
61 | #include <asm/io.h> | |
62 | #include "ipmi_si_sm.h" | |
63 | #include <linux/init.h> | |
b224cd3a | 64 | #include <linux/dmi.h> |
b361e27b CM |
65 | #include <linux/string.h> |
66 | #include <linux/ctype.h> | |
67 | ||
dba9b4f6 CM |
68 | #ifdef CONFIG_PPC_OF |
69 | #include <asm/of_device.h> | |
70 | #include <asm/of_platform.h> | |
71 | #endif | |
72 | ||
b361e27b | 73 | #define PFX "ipmi_si: " |
1da177e4 LT |
74 | |
75 | /* Measure times between events in the driver. */ | |
76 | #undef DEBUG_TIMING | |
77 | ||
78 | /* Call every 10 ms. */ | |
79 | #define SI_TIMEOUT_TIME_USEC 10000 | |
80 | #define SI_USEC_PER_JIFFY (1000000/HZ) | |
81 | #define SI_TIMEOUT_JIFFIES (SI_TIMEOUT_TIME_USEC/SI_USEC_PER_JIFFY) | |
82 | #define SI_SHORT_TIMEOUT_USEC 250 /* .25ms when the SM request a | |
83 | short timeout */ | |
84 | ||
ee6cd5f8 CM |
85 | /* Bit for BMC global enables. */ |
86 | #define IPMI_BMC_RCV_MSG_INTR 0x01 | |
87 | #define IPMI_BMC_EVT_MSG_INTR 0x02 | |
88 | #define IPMI_BMC_EVT_MSG_BUFF 0x04 | |
89 | #define IPMI_BMC_SYS_LOG 0x08 | |
90 | ||
1da177e4 LT |
91 | enum si_intf_state { |
92 | SI_NORMAL, | |
93 | SI_GETTING_FLAGS, | |
94 | SI_GETTING_EVENTS, | |
95 | SI_CLEARING_FLAGS, | |
96 | SI_CLEARING_FLAGS_THEN_SET_IRQ, | |
97 | SI_GETTING_MESSAGES, | |
98 | SI_ENABLE_INTERRUPTS1, | |
ee6cd5f8 CM |
99 | SI_ENABLE_INTERRUPTS2, |
100 | SI_DISABLE_INTERRUPTS1, | |
101 | SI_DISABLE_INTERRUPTS2 | |
1da177e4 LT |
102 | /* FIXME - add watchdog stuff. */ |
103 | }; | |
104 | ||
9dbf68f9 CM |
105 | /* Some BT-specific defines we need here. */ |
106 | #define IPMI_BT_INTMASK_REG 2 | |
107 | #define IPMI_BT_INTMASK_CLEAR_IRQ_BIT 2 | |
108 | #define IPMI_BT_INTMASK_ENABLE_IRQ_BIT 1 | |
109 | ||
1da177e4 LT |
110 | enum si_type { |
111 | SI_KCS, SI_SMIC, SI_BT | |
112 | }; | |
b361e27b | 113 | static char *si_to_str[] = { "kcs", "smic", "bt" }; |
1da177e4 | 114 | |
50c812b2 CM |
115 | #define DEVICE_NAME "ipmi_si" |
116 | ||
117 | static struct device_driver ipmi_driver = | |
118 | { | |
119 | .name = DEVICE_NAME, | |
120 | .bus = &platform_bus_type | |
121 | }; | |
3ae0e0f9 | 122 | |
1da177e4 LT |
123 | struct smi_info |
124 | { | |
a9a2c44f | 125 | int intf_num; |
1da177e4 LT |
126 | ipmi_smi_t intf; |
127 | struct si_sm_data *si_sm; | |
128 | struct si_sm_handlers *handlers; | |
129 | enum si_type si_type; | |
130 | spinlock_t si_lock; | |
131 | spinlock_t msg_lock; | |
132 | struct list_head xmit_msgs; | |
133 | struct list_head hp_xmit_msgs; | |
134 | struct ipmi_smi_msg *curr_msg; | |
135 | enum si_intf_state si_state; | |
136 | ||
137 | /* Used to handle the various types of I/O that can occur with | |
138 | IPMI */ | |
139 | struct si_sm_io io; | |
140 | int (*io_setup)(struct smi_info *info); | |
141 | void (*io_cleanup)(struct smi_info *info); | |
142 | int (*irq_setup)(struct smi_info *info); | |
143 | void (*irq_cleanup)(struct smi_info *info); | |
144 | unsigned int io_size; | |
b0defcdb CM |
145 | char *addr_source; /* ACPI, PCI, SMBIOS, hardcode, default. */ |
146 | void (*addr_source_cleanup)(struct smi_info *info); | |
147 | void *addr_source_data; | |
1da177e4 | 148 | |
3ae0e0f9 CM |
149 | /* Per-OEM handler, called from handle_flags(). |
150 | Returns 1 when handle_flags() needs to be re-run | |
151 | or 0 indicating it set si_state itself. | |
152 | */ | |
153 | int (*oem_data_avail_handler)(struct smi_info *smi_info); | |
154 | ||
1da177e4 LT |
155 | /* Flags from the last GET_MSG_FLAGS command, used when an ATTN |
156 | is set to hold the flags until we are done handling everything | |
157 | from the flags. */ | |
158 | #define RECEIVE_MSG_AVAIL 0x01 | |
159 | #define EVENT_MSG_BUFFER_FULL 0x02 | |
160 | #define WDT_PRE_TIMEOUT_INT 0x08 | |
3ae0e0f9 CM |
161 | #define OEM0_DATA_AVAIL 0x20 |
162 | #define OEM1_DATA_AVAIL 0x40 | |
163 | #define OEM2_DATA_AVAIL 0x80 | |
164 | #define OEM_DATA_AVAIL (OEM0_DATA_AVAIL | \ | |
165 | OEM1_DATA_AVAIL | \ | |
166 | OEM2_DATA_AVAIL) | |
1da177e4 LT |
167 | unsigned char msg_flags; |
168 | ||
169 | /* If set to true, this will request events the next time the | |
170 | state machine is idle. */ | |
171 | atomic_t req_events; | |
172 | ||
173 | /* If true, run the state machine to completion on every send | |
174 | call. Generally used after a panic to make sure stuff goes | |
175 | out. */ | |
176 | int run_to_completion; | |
177 | ||
178 | /* The I/O port of an SI interface. */ | |
179 | int port; | |
180 | ||
181 | /* The space between start addresses of the two ports. For | |
182 | instance, if the first port is 0xca2 and the spacing is 4, then | |
183 | the second port is 0xca6. */ | |
184 | unsigned int spacing; | |
185 | ||
186 | /* zero if no irq; */ | |
187 | int irq; | |
188 | ||
189 | /* The timer for this si. */ | |
190 | struct timer_list si_timer; | |
191 | ||
192 | /* The time (in jiffies) the last timeout occurred at. */ | |
193 | unsigned long last_timeout_jiffies; | |
194 | ||
195 | /* Used to gracefully stop the timer without race conditions. */ | |
a9a2c44f | 196 | atomic_t stop_operation; |
1da177e4 LT |
197 | |
198 | /* The driver will disable interrupts when it gets into a | |
199 | situation where it cannot handle messages due to lack of | |
200 | memory. Once that situation clears up, it will re-enable | |
201 | interrupts. */ | |
202 | int interrupt_disabled; | |
203 | ||
50c812b2 | 204 | /* From the get device id response... */ |
3ae0e0f9 | 205 | struct ipmi_device_id device_id; |
1da177e4 | 206 | |
50c812b2 CM |
207 | /* Driver model stuff. */ |
208 | struct device *dev; | |
209 | struct platform_device *pdev; | |
210 | ||
211 | /* True if we allocated the device, false if it came from | |
212 | * someplace else (like PCI). */ | |
213 | int dev_registered; | |
214 | ||
1da177e4 LT |
215 | /* Slave address, could be reported from DMI. */ |
216 | unsigned char slave_addr; | |
217 | ||
218 | /* Counters and things for the proc filesystem. */ | |
219 | spinlock_t count_lock; | |
220 | unsigned long short_timeouts; | |
221 | unsigned long long_timeouts; | |
222 | unsigned long timeout_restarts; | |
223 | unsigned long idles; | |
224 | unsigned long interrupts; | |
225 | unsigned long attentions; | |
226 | unsigned long flag_fetches; | |
227 | unsigned long hosed_count; | |
228 | unsigned long complete_transactions; | |
229 | unsigned long events; | |
230 | unsigned long watchdog_pretimeouts; | |
231 | unsigned long incoming_messages; | |
a9a2c44f | 232 | |
e9a705a0 | 233 | struct task_struct *thread; |
b0defcdb CM |
234 | |
235 | struct list_head link; | |
1da177e4 LT |
236 | }; |
237 | ||
a51f4a81 CM |
238 | #define SI_MAX_PARMS 4 |
239 | ||
240 | static int force_kipmid[SI_MAX_PARMS]; | |
241 | static int num_force_kipmid; | |
242 | ||
b361e27b CM |
243 | static int unload_when_empty = 1; |
244 | ||
b0defcdb | 245 | static int try_smi_init(struct smi_info *smi); |
b361e27b | 246 | static void cleanup_one_si(struct smi_info *to_clean); |
b0defcdb | 247 | |
e041c683 | 248 | static ATOMIC_NOTIFIER_HEAD(xaction_notifier_list); |
ea94027b CM |
249 | static int register_xaction_notifier(struct notifier_block * nb) |
250 | { | |
e041c683 | 251 | return atomic_notifier_chain_register(&xaction_notifier_list, nb); |
ea94027b CM |
252 | } |
253 | ||
1da177e4 LT |
254 | static void deliver_recv_msg(struct smi_info *smi_info, |
255 | struct ipmi_smi_msg *msg) | |
256 | { | |
257 | /* Deliver the message to the upper layer with the lock | |
258 | released. */ | |
259 | spin_unlock(&(smi_info->si_lock)); | |
260 | ipmi_smi_msg_received(smi_info->intf, msg); | |
261 | spin_lock(&(smi_info->si_lock)); | |
262 | } | |
263 | ||
4d7cbac7 | 264 | static void return_hosed_msg(struct smi_info *smi_info, int cCode) |
1da177e4 LT |
265 | { |
266 | struct ipmi_smi_msg *msg = smi_info->curr_msg; | |
267 | ||
4d7cbac7 CM |
268 | if (cCode < 0 || cCode > IPMI_ERR_UNSPECIFIED) |
269 | cCode = IPMI_ERR_UNSPECIFIED; | |
270 | /* else use it as is */ | |
271 | ||
1da177e4 LT |
272 | /* Make it a reponse */ |
273 | msg->rsp[0] = msg->data[0] | 4; | |
274 | msg->rsp[1] = msg->data[1]; | |
4d7cbac7 | 275 | msg->rsp[2] = cCode; |
1da177e4 LT |
276 | msg->rsp_size = 3; |
277 | ||
278 | smi_info->curr_msg = NULL; | |
279 | deliver_recv_msg(smi_info, msg); | |
280 | } | |
281 | ||
282 | static enum si_sm_result start_next_msg(struct smi_info *smi_info) | |
283 | { | |
284 | int rv; | |
285 | struct list_head *entry = NULL; | |
286 | #ifdef DEBUG_TIMING | |
287 | struct timeval t; | |
288 | #endif | |
289 | ||
290 | /* No need to save flags, we aleady have interrupts off and we | |
291 | already hold the SMI lock. */ | |
292 | spin_lock(&(smi_info->msg_lock)); | |
293 | ||
294 | /* Pick the high priority queue first. */ | |
b0defcdb | 295 | if (!list_empty(&(smi_info->hp_xmit_msgs))) { |
1da177e4 | 296 | entry = smi_info->hp_xmit_msgs.next; |
b0defcdb | 297 | } else if (!list_empty(&(smi_info->xmit_msgs))) { |
1da177e4 LT |
298 | entry = smi_info->xmit_msgs.next; |
299 | } | |
300 | ||
b0defcdb | 301 | if (!entry) { |
1da177e4 LT |
302 | smi_info->curr_msg = NULL; |
303 | rv = SI_SM_IDLE; | |
304 | } else { | |
305 | int err; | |
306 | ||
307 | list_del(entry); | |
308 | smi_info->curr_msg = list_entry(entry, | |
309 | struct ipmi_smi_msg, | |
310 | link); | |
311 | #ifdef DEBUG_TIMING | |
312 | do_gettimeofday(&t); | |
313 | printk("**Start2: %d.%9.9d\n", t.tv_sec, t.tv_usec); | |
314 | #endif | |
e041c683 AS |
315 | err = atomic_notifier_call_chain(&xaction_notifier_list, |
316 | 0, smi_info); | |
ea94027b CM |
317 | if (err & NOTIFY_STOP_MASK) { |
318 | rv = SI_SM_CALL_WITHOUT_DELAY; | |
319 | goto out; | |
320 | } | |
1da177e4 LT |
321 | err = smi_info->handlers->start_transaction( |
322 | smi_info->si_sm, | |
323 | smi_info->curr_msg->data, | |
324 | smi_info->curr_msg->data_size); | |
325 | if (err) { | |
4d7cbac7 | 326 | return_hosed_msg(smi_info, err); |
1da177e4 LT |
327 | } |
328 | ||
329 | rv = SI_SM_CALL_WITHOUT_DELAY; | |
330 | } | |
ea94027b | 331 | out: |
1da177e4 LT |
332 | spin_unlock(&(smi_info->msg_lock)); |
333 | ||
334 | return rv; | |
335 | } | |
336 | ||
337 | static void start_enable_irq(struct smi_info *smi_info) | |
338 | { | |
339 | unsigned char msg[2]; | |
340 | ||
341 | /* If we are enabling interrupts, we have to tell the | |
342 | BMC to use them. */ | |
343 | msg[0] = (IPMI_NETFN_APP_REQUEST << 2); | |
344 | msg[1] = IPMI_GET_BMC_GLOBAL_ENABLES_CMD; | |
345 | ||
346 | smi_info->handlers->start_transaction(smi_info->si_sm, msg, 2); | |
347 | smi_info->si_state = SI_ENABLE_INTERRUPTS1; | |
348 | } | |
349 | ||
ee6cd5f8 CM |
350 | static void start_disable_irq(struct smi_info *smi_info) |
351 | { | |
352 | unsigned char msg[2]; | |
353 | ||
354 | msg[0] = (IPMI_NETFN_APP_REQUEST << 2); | |
355 | msg[1] = IPMI_GET_BMC_GLOBAL_ENABLES_CMD; | |
356 | ||
357 | smi_info->handlers->start_transaction(smi_info->si_sm, msg, 2); | |
358 | smi_info->si_state = SI_DISABLE_INTERRUPTS1; | |
359 | } | |
360 | ||
1da177e4 LT |
361 | static void start_clear_flags(struct smi_info *smi_info) |
362 | { | |
363 | unsigned char msg[3]; | |
364 | ||
365 | /* Make sure the watchdog pre-timeout flag is not set at startup. */ | |
366 | msg[0] = (IPMI_NETFN_APP_REQUEST << 2); | |
367 | msg[1] = IPMI_CLEAR_MSG_FLAGS_CMD; | |
368 | msg[2] = WDT_PRE_TIMEOUT_INT; | |
369 | ||
370 | smi_info->handlers->start_transaction(smi_info->si_sm, msg, 3); | |
371 | smi_info->si_state = SI_CLEARING_FLAGS; | |
372 | } | |
373 | ||
374 | /* When we have a situtaion where we run out of memory and cannot | |
375 | allocate messages, we just leave them in the BMC and run the system | |
376 | polled until we can allocate some memory. Once we have some | |
377 | memory, we will re-enable the interrupt. */ | |
378 | static inline void disable_si_irq(struct smi_info *smi_info) | |
379 | { | |
b0defcdb | 380 | if ((smi_info->irq) && (!smi_info->interrupt_disabled)) { |
ee6cd5f8 | 381 | start_disable_irq(smi_info); |
1da177e4 LT |
382 | smi_info->interrupt_disabled = 1; |
383 | } | |
384 | } | |
385 | ||
386 | static inline void enable_si_irq(struct smi_info *smi_info) | |
387 | { | |
388 | if ((smi_info->irq) && (smi_info->interrupt_disabled)) { | |
ee6cd5f8 | 389 | start_enable_irq(smi_info); |
1da177e4 LT |
390 | smi_info->interrupt_disabled = 0; |
391 | } | |
392 | } | |
393 | ||
394 | static void handle_flags(struct smi_info *smi_info) | |
395 | { | |
3ae0e0f9 | 396 | retry: |
1da177e4 LT |
397 | if (smi_info->msg_flags & WDT_PRE_TIMEOUT_INT) { |
398 | /* Watchdog pre-timeout */ | |
399 | spin_lock(&smi_info->count_lock); | |
400 | smi_info->watchdog_pretimeouts++; | |
401 | spin_unlock(&smi_info->count_lock); | |
402 | ||
403 | start_clear_flags(smi_info); | |
404 | smi_info->msg_flags &= ~WDT_PRE_TIMEOUT_INT; | |
405 | spin_unlock(&(smi_info->si_lock)); | |
406 | ipmi_smi_watchdog_pretimeout(smi_info->intf); | |
407 | spin_lock(&(smi_info->si_lock)); | |
408 | } else if (smi_info->msg_flags & RECEIVE_MSG_AVAIL) { | |
409 | /* Messages available. */ | |
410 | smi_info->curr_msg = ipmi_alloc_smi_msg(); | |
b0defcdb | 411 | if (!smi_info->curr_msg) { |
1da177e4 LT |
412 | disable_si_irq(smi_info); |
413 | smi_info->si_state = SI_NORMAL; | |
414 | return; | |
415 | } | |
416 | enable_si_irq(smi_info); | |
417 | ||
418 | smi_info->curr_msg->data[0] = (IPMI_NETFN_APP_REQUEST << 2); | |
419 | smi_info->curr_msg->data[1] = IPMI_GET_MSG_CMD; | |
420 | smi_info->curr_msg->data_size = 2; | |
421 | ||
422 | smi_info->handlers->start_transaction( | |
423 | smi_info->si_sm, | |
424 | smi_info->curr_msg->data, | |
425 | smi_info->curr_msg->data_size); | |
426 | smi_info->si_state = SI_GETTING_MESSAGES; | |
427 | } else if (smi_info->msg_flags & EVENT_MSG_BUFFER_FULL) { | |
428 | /* Events available. */ | |
429 | smi_info->curr_msg = ipmi_alloc_smi_msg(); | |
b0defcdb | 430 | if (!smi_info->curr_msg) { |
1da177e4 LT |
431 | disable_si_irq(smi_info); |
432 | smi_info->si_state = SI_NORMAL; | |
433 | return; | |
434 | } | |
435 | enable_si_irq(smi_info); | |
436 | ||
437 | smi_info->curr_msg->data[0] = (IPMI_NETFN_APP_REQUEST << 2); | |
438 | smi_info->curr_msg->data[1] = IPMI_READ_EVENT_MSG_BUFFER_CMD; | |
439 | smi_info->curr_msg->data_size = 2; | |
440 | ||
441 | smi_info->handlers->start_transaction( | |
442 | smi_info->si_sm, | |
443 | smi_info->curr_msg->data, | |
444 | smi_info->curr_msg->data_size); | |
445 | smi_info->si_state = SI_GETTING_EVENTS; | |
4064d5ef CM |
446 | } else if (smi_info->msg_flags & OEM_DATA_AVAIL && |
447 | smi_info->oem_data_avail_handler) { | |
448 | if (smi_info->oem_data_avail_handler(smi_info)) | |
449 | goto retry; | |
1da177e4 LT |
450 | } else { |
451 | smi_info->si_state = SI_NORMAL; | |
452 | } | |
453 | } | |
454 | ||
455 | static void handle_transaction_done(struct smi_info *smi_info) | |
456 | { | |
457 | struct ipmi_smi_msg *msg; | |
458 | #ifdef DEBUG_TIMING | |
459 | struct timeval t; | |
460 | ||
461 | do_gettimeofday(&t); | |
462 | printk("**Done: %d.%9.9d\n", t.tv_sec, t.tv_usec); | |
463 | #endif | |
464 | switch (smi_info->si_state) { | |
465 | case SI_NORMAL: | |
b0defcdb | 466 | if (!smi_info->curr_msg) |
1da177e4 LT |
467 | break; |
468 | ||
469 | smi_info->curr_msg->rsp_size | |
470 | = smi_info->handlers->get_result( | |
471 | smi_info->si_sm, | |
472 | smi_info->curr_msg->rsp, | |
473 | IPMI_MAX_MSG_LENGTH); | |
474 | ||
475 | /* Do this here becase deliver_recv_msg() releases the | |
476 | lock, and a new message can be put in during the | |
477 | time the lock is released. */ | |
478 | msg = smi_info->curr_msg; | |
479 | smi_info->curr_msg = NULL; | |
480 | deliver_recv_msg(smi_info, msg); | |
481 | break; | |
482 | ||
483 | case SI_GETTING_FLAGS: | |
484 | { | |
485 | unsigned char msg[4]; | |
486 | unsigned int len; | |
487 | ||
488 | /* We got the flags from the SMI, now handle them. */ | |
489 | len = smi_info->handlers->get_result(smi_info->si_sm, msg, 4); | |
490 | if (msg[2] != 0) { | |
491 | /* Error fetching flags, just give up for | |
492 | now. */ | |
493 | smi_info->si_state = SI_NORMAL; | |
494 | } else if (len < 4) { | |
495 | /* Hmm, no flags. That's technically illegal, but | |
496 | don't use uninitialized data. */ | |
497 | smi_info->si_state = SI_NORMAL; | |
498 | } else { | |
499 | smi_info->msg_flags = msg[3]; | |
500 | handle_flags(smi_info); | |
501 | } | |
502 | break; | |
503 | } | |
504 | ||
505 | case SI_CLEARING_FLAGS: | |
506 | case SI_CLEARING_FLAGS_THEN_SET_IRQ: | |
507 | { | |
508 | unsigned char msg[3]; | |
509 | ||
510 | /* We cleared the flags. */ | |
511 | smi_info->handlers->get_result(smi_info->si_sm, msg, 3); | |
512 | if (msg[2] != 0) { | |
513 | /* Error clearing flags */ | |
514 | printk(KERN_WARNING | |
515 | "ipmi_si: Error clearing flags: %2.2x\n", | |
516 | msg[2]); | |
517 | } | |
518 | if (smi_info->si_state == SI_CLEARING_FLAGS_THEN_SET_IRQ) | |
519 | start_enable_irq(smi_info); | |
520 | else | |
521 | smi_info->si_state = SI_NORMAL; | |
522 | break; | |
523 | } | |
524 | ||
525 | case SI_GETTING_EVENTS: | |
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 event flag. */ | |
543 | smi_info->msg_flags &= ~EVENT_MSG_BUFFER_FULL; | |
544 | handle_flags(smi_info); | |
545 | } else { | |
546 | spin_lock(&smi_info->count_lock); | |
547 | smi_info->events++; | |
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_GETTING_MESSAGES: | |
562 | { | |
563 | smi_info->curr_msg->rsp_size | |
564 | = smi_info->handlers->get_result( | |
565 | smi_info->si_sm, | |
566 | smi_info->curr_msg->rsp, | |
567 | IPMI_MAX_MSG_LENGTH); | |
568 | ||
569 | /* Do this here becase deliver_recv_msg() releases the | |
570 | lock, and a new message can be put in during the | |
571 | time the lock is released. */ | |
572 | msg = smi_info->curr_msg; | |
573 | smi_info->curr_msg = NULL; | |
574 | if (msg->rsp[2] != 0) { | |
575 | /* Error getting event, probably done. */ | |
576 | msg->done(msg); | |
577 | ||
578 | /* Take off the msg flag. */ | |
579 | smi_info->msg_flags &= ~RECEIVE_MSG_AVAIL; | |
580 | handle_flags(smi_info); | |
581 | } else { | |
582 | spin_lock(&smi_info->count_lock); | |
583 | smi_info->incoming_messages++; | |
584 | spin_unlock(&smi_info->count_lock); | |
585 | ||
586 | /* Do this before we deliver the message | |
587 | because delivering the message releases the | |
588 | lock and something else can mess with the | |
589 | state. */ | |
590 | handle_flags(smi_info); | |
591 | ||
592 | deliver_recv_msg(smi_info, msg); | |
593 | } | |
594 | break; | |
595 | } | |
596 | ||
597 | case SI_ENABLE_INTERRUPTS1: | |
598 | { | |
599 | unsigned char msg[4]; | |
600 | ||
601 | /* We got the flags from the SMI, now handle them. */ | |
602 | smi_info->handlers->get_result(smi_info->si_sm, msg, 4); | |
603 | if (msg[2] != 0) { | |
604 | printk(KERN_WARNING | |
605 | "ipmi_si: Could not enable interrupts" | |
606 | ", failed get, using polled mode.\n"); | |
607 | smi_info->si_state = SI_NORMAL; | |
608 | } else { | |
609 | msg[0] = (IPMI_NETFN_APP_REQUEST << 2); | |
610 | msg[1] = IPMI_SET_BMC_GLOBAL_ENABLES_CMD; | |
ee6cd5f8 CM |
611 | msg[2] = (msg[3] | |
612 | IPMI_BMC_RCV_MSG_INTR | | |
613 | IPMI_BMC_EVT_MSG_INTR); | |
1da177e4 LT |
614 | smi_info->handlers->start_transaction( |
615 | smi_info->si_sm, msg, 3); | |
616 | smi_info->si_state = SI_ENABLE_INTERRUPTS2; | |
617 | } | |
618 | break; | |
619 | } | |
620 | ||
621 | case SI_ENABLE_INTERRUPTS2: | |
622 | { | |
623 | unsigned char msg[4]; | |
624 | ||
625 | /* We got the flags from the SMI, now handle them. */ | |
626 | smi_info->handlers->get_result(smi_info->si_sm, msg, 4); | |
627 | if (msg[2] != 0) { | |
628 | printk(KERN_WARNING | |
629 | "ipmi_si: Could not enable interrupts" | |
630 | ", failed set, using polled mode.\n"); | |
631 | } | |
632 | smi_info->si_state = SI_NORMAL; | |
633 | break; | |
634 | } | |
ee6cd5f8 CM |
635 | |
636 | case SI_DISABLE_INTERRUPTS1: | |
637 | { | |
638 | unsigned char msg[4]; | |
639 | ||
640 | /* We got the flags from the SMI, now handle them. */ | |
641 | smi_info->handlers->get_result(smi_info->si_sm, msg, 4); | |
642 | if (msg[2] != 0) { | |
643 | printk(KERN_WARNING | |
644 | "ipmi_si: Could not disable interrupts" | |
645 | ", failed get.\n"); | |
646 | smi_info->si_state = SI_NORMAL; | |
647 | } else { | |
648 | msg[0] = (IPMI_NETFN_APP_REQUEST << 2); | |
649 | msg[1] = IPMI_SET_BMC_GLOBAL_ENABLES_CMD; | |
650 | msg[2] = (msg[3] & | |
651 | ~(IPMI_BMC_RCV_MSG_INTR | | |
652 | IPMI_BMC_EVT_MSG_INTR)); | |
653 | smi_info->handlers->start_transaction( | |
654 | smi_info->si_sm, msg, 3); | |
655 | smi_info->si_state = SI_DISABLE_INTERRUPTS2; | |
656 | } | |
657 | break; | |
658 | } | |
659 | ||
660 | case SI_DISABLE_INTERRUPTS2: | |
661 | { | |
662 | unsigned char msg[4]; | |
663 | ||
664 | /* We got the flags from the SMI, now handle them. */ | |
665 | smi_info->handlers->get_result(smi_info->si_sm, msg, 4); | |
666 | if (msg[2] != 0) { | |
667 | printk(KERN_WARNING | |
668 | "ipmi_si: Could not disable interrupts" | |
669 | ", failed set.\n"); | |
670 | } | |
671 | smi_info->si_state = SI_NORMAL; | |
672 | break; | |
673 | } | |
1da177e4 LT |
674 | } |
675 | } | |
676 | ||
677 | /* Called on timeouts and events. Timeouts should pass the elapsed | |
678 | time, interrupts should pass in zero. */ | |
679 | static enum si_sm_result smi_event_handler(struct smi_info *smi_info, | |
680 | int time) | |
681 | { | |
682 | enum si_sm_result si_sm_result; | |
683 | ||
684 | restart: | |
685 | /* There used to be a loop here that waited a little while | |
686 | (around 25us) before giving up. That turned out to be | |
687 | pointless, the minimum delays I was seeing were in the 300us | |
688 | range, which is far too long to wait in an interrupt. So | |
689 | we just run until the state machine tells us something | |
690 | happened or it needs a delay. */ | |
691 | si_sm_result = smi_info->handlers->event(smi_info->si_sm, time); | |
692 | time = 0; | |
693 | while (si_sm_result == SI_SM_CALL_WITHOUT_DELAY) | |
694 | { | |
695 | si_sm_result = smi_info->handlers->event(smi_info->si_sm, 0); | |
696 | } | |
697 | ||
698 | if (si_sm_result == SI_SM_TRANSACTION_COMPLETE) | |
699 | { | |
700 | spin_lock(&smi_info->count_lock); | |
701 | smi_info->complete_transactions++; | |
702 | spin_unlock(&smi_info->count_lock); | |
703 | ||
704 | handle_transaction_done(smi_info); | |
705 | si_sm_result = smi_info->handlers->event(smi_info->si_sm, 0); | |
706 | } | |
707 | else if (si_sm_result == SI_SM_HOSED) | |
708 | { | |
709 | spin_lock(&smi_info->count_lock); | |
710 | smi_info->hosed_count++; | |
711 | spin_unlock(&smi_info->count_lock); | |
712 | ||
713 | /* Do the before return_hosed_msg, because that | |
714 | releases the lock. */ | |
715 | smi_info->si_state = SI_NORMAL; | |
716 | if (smi_info->curr_msg != NULL) { | |
717 | /* If we were handling a user message, format | |
718 | a response to send to the upper layer to | |
719 | tell it about the error. */ | |
4d7cbac7 | 720 | return_hosed_msg(smi_info, IPMI_ERR_UNSPECIFIED); |
1da177e4 LT |
721 | } |
722 | si_sm_result = smi_info->handlers->event(smi_info->si_sm, 0); | |
723 | } | |
724 | ||
725 | /* We prefer handling attn over new messages. */ | |
726 | if (si_sm_result == SI_SM_ATTN) | |
727 | { | |
728 | unsigned char msg[2]; | |
729 | ||
730 | spin_lock(&smi_info->count_lock); | |
731 | smi_info->attentions++; | |
732 | spin_unlock(&smi_info->count_lock); | |
733 | ||
734 | /* Got a attn, send down a get message flags to see | |
735 | what's causing it. It would be better to handle | |
736 | this in the upper layer, but due to the way | |
737 | interrupts work with the SMI, that's not really | |
738 | possible. */ | |
739 | msg[0] = (IPMI_NETFN_APP_REQUEST << 2); | |
740 | msg[1] = IPMI_GET_MSG_FLAGS_CMD; | |
741 | ||
742 | smi_info->handlers->start_transaction( | |
743 | smi_info->si_sm, msg, 2); | |
744 | smi_info->si_state = SI_GETTING_FLAGS; | |
745 | goto restart; | |
746 | } | |
747 | ||
748 | /* If we are currently idle, try to start the next message. */ | |
749 | if (si_sm_result == SI_SM_IDLE) { | |
750 | spin_lock(&smi_info->count_lock); | |
751 | smi_info->idles++; | |
752 | spin_unlock(&smi_info->count_lock); | |
753 | ||
754 | si_sm_result = start_next_msg(smi_info); | |
755 | if (si_sm_result != SI_SM_IDLE) | |
756 | goto restart; | |
757 | } | |
758 | ||
759 | if ((si_sm_result == SI_SM_IDLE) | |
760 | && (atomic_read(&smi_info->req_events))) | |
761 | { | |
762 | /* We are idle and the upper layer requested that I fetch | |
763 | events, so do so. */ | |
55162fb1 | 764 | atomic_set(&smi_info->req_events, 0); |
1da177e4 | 765 | |
55162fb1 CM |
766 | smi_info->curr_msg = ipmi_alloc_smi_msg(); |
767 | if (!smi_info->curr_msg) | |
768 | goto out; | |
1da177e4 | 769 | |
55162fb1 CM |
770 | smi_info->curr_msg->data[0] = (IPMI_NETFN_APP_REQUEST << 2); |
771 | smi_info->curr_msg->data[1] = IPMI_READ_EVENT_MSG_BUFFER_CMD; | |
772 | smi_info->curr_msg->data_size = 2; | |
1da177e4 LT |
773 | |
774 | smi_info->handlers->start_transaction( | |
55162fb1 CM |
775 | smi_info->si_sm, |
776 | smi_info->curr_msg->data, | |
777 | smi_info->curr_msg->data_size); | |
778 | smi_info->si_state = SI_GETTING_EVENTS; | |
1da177e4 LT |
779 | goto restart; |
780 | } | |
55162fb1 | 781 | out: |
1da177e4 LT |
782 | return si_sm_result; |
783 | } | |
784 | ||
785 | static void sender(void *send_info, | |
786 | struct ipmi_smi_msg *msg, | |
787 | int priority) | |
788 | { | |
789 | struct smi_info *smi_info = send_info; | |
790 | enum si_sm_result result; | |
791 | unsigned long flags; | |
792 | #ifdef DEBUG_TIMING | |
793 | struct timeval t; | |
794 | #endif | |
795 | ||
b361e27b CM |
796 | if (atomic_read(&smi_info->stop_operation)) { |
797 | msg->rsp[0] = msg->data[0] | 4; | |
798 | msg->rsp[1] = msg->data[1]; | |
799 | msg->rsp[2] = IPMI_ERR_UNSPECIFIED; | |
800 | msg->rsp_size = 3; | |
801 | deliver_recv_msg(smi_info, msg); | |
802 | return; | |
803 | } | |
804 | ||
1da177e4 LT |
805 | spin_lock_irqsave(&(smi_info->msg_lock), flags); |
806 | #ifdef DEBUG_TIMING | |
807 | do_gettimeofday(&t); | |
808 | printk("**Enqueue: %d.%9.9d\n", t.tv_sec, t.tv_usec); | |
809 | #endif | |
810 | ||
811 | if (smi_info->run_to_completion) { | |
812 | /* If we are running to completion, then throw it in | |
813 | the list and run transactions until everything is | |
814 | clear. Priority doesn't matter here. */ | |
815 | list_add_tail(&(msg->link), &(smi_info->xmit_msgs)); | |
816 | ||
817 | /* We have to release the msg lock and claim the smi | |
818 | lock in this case, because of race conditions. */ | |
819 | spin_unlock_irqrestore(&(smi_info->msg_lock), flags); | |
820 | ||
821 | spin_lock_irqsave(&(smi_info->si_lock), flags); | |
822 | result = smi_event_handler(smi_info, 0); | |
823 | while (result != SI_SM_IDLE) { | |
824 | udelay(SI_SHORT_TIMEOUT_USEC); | |
825 | result = smi_event_handler(smi_info, | |
826 | SI_SHORT_TIMEOUT_USEC); | |
827 | } | |
828 | spin_unlock_irqrestore(&(smi_info->si_lock), flags); | |
829 | return; | |
830 | } else { | |
831 | if (priority > 0) { | |
832 | list_add_tail(&(msg->link), &(smi_info->hp_xmit_msgs)); | |
833 | } else { | |
834 | list_add_tail(&(msg->link), &(smi_info->xmit_msgs)); | |
835 | } | |
836 | } | |
837 | spin_unlock_irqrestore(&(smi_info->msg_lock), flags); | |
838 | ||
839 | spin_lock_irqsave(&(smi_info->si_lock), flags); | |
840 | if ((smi_info->si_state == SI_NORMAL) | |
841 | && (smi_info->curr_msg == NULL)) | |
842 | { | |
843 | start_next_msg(smi_info); | |
1da177e4 LT |
844 | } |
845 | spin_unlock_irqrestore(&(smi_info->si_lock), flags); | |
846 | } | |
847 | ||
848 | static void set_run_to_completion(void *send_info, int i_run_to_completion) | |
849 | { | |
850 | struct smi_info *smi_info = send_info; | |
851 | enum si_sm_result result; | |
852 | unsigned long flags; | |
853 | ||
854 | spin_lock_irqsave(&(smi_info->si_lock), flags); | |
855 | ||
856 | smi_info->run_to_completion = i_run_to_completion; | |
857 | if (i_run_to_completion) { | |
858 | result = smi_event_handler(smi_info, 0); | |
859 | while (result != SI_SM_IDLE) { | |
860 | udelay(SI_SHORT_TIMEOUT_USEC); | |
861 | result = smi_event_handler(smi_info, | |
862 | SI_SHORT_TIMEOUT_USEC); | |
863 | } | |
864 | } | |
865 | ||
866 | spin_unlock_irqrestore(&(smi_info->si_lock), flags); | |
867 | } | |
868 | ||
a9a2c44f CM |
869 | static int ipmi_thread(void *data) |
870 | { | |
871 | struct smi_info *smi_info = data; | |
e9a705a0 | 872 | unsigned long flags; |
a9a2c44f CM |
873 | enum si_sm_result smi_result; |
874 | ||
a9a2c44f | 875 | set_user_nice(current, 19); |
e9a705a0 | 876 | while (!kthread_should_stop()) { |
a9a2c44f | 877 | spin_lock_irqsave(&(smi_info->si_lock), flags); |
8a3628d5 | 878 | smi_result = smi_event_handler(smi_info, 0); |
a9a2c44f | 879 | spin_unlock_irqrestore(&(smi_info->si_lock), flags); |
e9a705a0 MD |
880 | if (smi_result == SI_SM_CALL_WITHOUT_DELAY) { |
881 | /* do nothing */ | |
a9a2c44f | 882 | } |
e9a705a0 | 883 | else if (smi_result == SI_SM_CALL_WITH_DELAY) |
33979734 | 884 | schedule(); |
e9a705a0 MD |
885 | else |
886 | schedule_timeout_interruptible(1); | |
a9a2c44f | 887 | } |
a9a2c44f CM |
888 | return 0; |
889 | } | |
890 | ||
891 | ||
1da177e4 LT |
892 | static void poll(void *send_info) |
893 | { | |
894 | struct smi_info *smi_info = send_info; | |
895 | ||
15c62e10 CM |
896 | /* |
897 | * Make sure there is some delay in the poll loop so we can | |
898 | * drive time forward and timeout things. | |
899 | */ | |
900 | udelay(10); | |
901 | smi_event_handler(smi_info, 10); | |
1da177e4 LT |
902 | } |
903 | ||
904 | static void request_events(void *send_info) | |
905 | { | |
906 | struct smi_info *smi_info = send_info; | |
907 | ||
b361e27b CM |
908 | if (atomic_read(&smi_info->stop_operation)) |
909 | return; | |
910 | ||
1da177e4 LT |
911 | atomic_set(&smi_info->req_events, 1); |
912 | } | |
913 | ||
0c8204b3 | 914 | static int initialized; |
1da177e4 | 915 | |
1da177e4 LT |
916 | static void smi_timeout(unsigned long data) |
917 | { | |
918 | struct smi_info *smi_info = (struct smi_info *) data; | |
919 | enum si_sm_result smi_result; | |
920 | unsigned long flags; | |
921 | unsigned long jiffies_now; | |
c4edff1c | 922 | long time_diff; |
1da177e4 LT |
923 | #ifdef DEBUG_TIMING |
924 | struct timeval t; | |
925 | #endif | |
926 | ||
1da177e4 LT |
927 | spin_lock_irqsave(&(smi_info->si_lock), flags); |
928 | #ifdef DEBUG_TIMING | |
929 | do_gettimeofday(&t); | |
930 | printk("**Timer: %d.%9.9d\n", t.tv_sec, t.tv_usec); | |
931 | #endif | |
932 | jiffies_now = jiffies; | |
c4edff1c | 933 | time_diff = (((long)jiffies_now - (long)smi_info->last_timeout_jiffies) |
1da177e4 LT |
934 | * SI_USEC_PER_JIFFY); |
935 | smi_result = smi_event_handler(smi_info, time_diff); | |
936 | ||
937 | spin_unlock_irqrestore(&(smi_info->si_lock), flags); | |
938 | ||
939 | smi_info->last_timeout_jiffies = jiffies_now; | |
940 | ||
b0defcdb | 941 | if ((smi_info->irq) && (!smi_info->interrupt_disabled)) { |
1da177e4 LT |
942 | /* Running with interrupts, only do long timeouts. */ |
943 | smi_info->si_timer.expires = jiffies + SI_TIMEOUT_JIFFIES; | |
944 | spin_lock_irqsave(&smi_info->count_lock, flags); | |
945 | smi_info->long_timeouts++; | |
946 | spin_unlock_irqrestore(&smi_info->count_lock, flags); | |
947 | goto do_add_timer; | |
948 | } | |
949 | ||
950 | /* If the state machine asks for a short delay, then shorten | |
951 | the timer timeout. */ | |
952 | if (smi_result == SI_SM_CALL_WITH_DELAY) { | |
953 | spin_lock_irqsave(&smi_info->count_lock, flags); | |
954 | smi_info->short_timeouts++; | |
955 | spin_unlock_irqrestore(&smi_info->count_lock, flags); | |
1da177e4 | 956 | smi_info->si_timer.expires = jiffies + 1; |
1da177e4 LT |
957 | } else { |
958 | spin_lock_irqsave(&smi_info->count_lock, flags); | |
959 | smi_info->long_timeouts++; | |
960 | spin_unlock_irqrestore(&smi_info->count_lock, flags); | |
961 | smi_info->si_timer.expires = jiffies + SI_TIMEOUT_JIFFIES; | |
1da177e4 LT |
962 | } |
963 | ||
964 | do_add_timer: | |
965 | add_timer(&(smi_info->si_timer)); | |
966 | } | |
967 | ||
7d12e780 | 968 | static irqreturn_t si_irq_handler(int irq, void *data) |
1da177e4 LT |
969 | { |
970 | struct smi_info *smi_info = data; | |
971 | unsigned long flags; | |
972 | #ifdef DEBUG_TIMING | |
973 | struct timeval t; | |
974 | #endif | |
975 | ||
976 | spin_lock_irqsave(&(smi_info->si_lock), flags); | |
977 | ||
978 | spin_lock(&smi_info->count_lock); | |
979 | smi_info->interrupts++; | |
980 | spin_unlock(&smi_info->count_lock); | |
981 | ||
1da177e4 LT |
982 | #ifdef DEBUG_TIMING |
983 | do_gettimeofday(&t); | |
984 | printk("**Interrupt: %d.%9.9d\n", t.tv_sec, t.tv_usec); | |
985 | #endif | |
986 | smi_event_handler(smi_info, 0); | |
1da177e4 LT |
987 | spin_unlock_irqrestore(&(smi_info->si_lock), flags); |
988 | return IRQ_HANDLED; | |
989 | } | |
990 | ||
7d12e780 | 991 | static irqreturn_t si_bt_irq_handler(int irq, void *data) |
9dbf68f9 CM |
992 | { |
993 | struct smi_info *smi_info = data; | |
994 | /* We need to clear the IRQ flag for the BT interface. */ | |
995 | smi_info->io.outputb(&smi_info->io, IPMI_BT_INTMASK_REG, | |
996 | IPMI_BT_INTMASK_CLEAR_IRQ_BIT | |
997 | | IPMI_BT_INTMASK_ENABLE_IRQ_BIT); | |
7d12e780 | 998 | return si_irq_handler(irq, data); |
9dbf68f9 CM |
999 | } |
1000 | ||
453823ba CM |
1001 | static int smi_start_processing(void *send_info, |
1002 | ipmi_smi_t intf) | |
1003 | { | |
1004 | struct smi_info *new_smi = send_info; | |
a51f4a81 | 1005 | int enable = 0; |
453823ba CM |
1006 | |
1007 | new_smi->intf = intf; | |
1008 | ||
1009 | /* Set up the timer that drives the interface. */ | |
1010 | setup_timer(&new_smi->si_timer, smi_timeout, (long)new_smi); | |
1011 | new_smi->last_timeout_jiffies = jiffies; | |
1012 | mod_timer(&new_smi->si_timer, jiffies + SI_TIMEOUT_JIFFIES); | |
1013 | ||
a51f4a81 CM |
1014 | /* |
1015 | * Check if the user forcefully enabled the daemon. | |
1016 | */ | |
1017 | if (new_smi->intf_num < num_force_kipmid) | |
1018 | enable = force_kipmid[new_smi->intf_num]; | |
df3fe8de CM |
1019 | /* |
1020 | * The BT interface is efficient enough to not need a thread, | |
1021 | * and there is no need for a thread if we have interrupts. | |
1022 | */ | |
a51f4a81 CM |
1023 | else if ((new_smi->si_type != SI_BT) && (!new_smi->irq)) |
1024 | enable = 1; | |
1025 | ||
1026 | if (enable) { | |
453823ba CM |
1027 | new_smi->thread = kthread_run(ipmi_thread, new_smi, |
1028 | "kipmi%d", new_smi->intf_num); | |
1029 | if (IS_ERR(new_smi->thread)) { | |
1030 | printk(KERN_NOTICE "ipmi_si_intf: Could not start" | |
1031 | " kernel thread due to error %ld, only using" | |
1032 | " timers to drive the interface\n", | |
1033 | PTR_ERR(new_smi->thread)); | |
1034 | new_smi->thread = NULL; | |
1035 | } | |
1036 | } | |
1037 | ||
1038 | return 0; | |
1039 | } | |
9dbf68f9 | 1040 | |
b9675136 CM |
1041 | static void set_maintenance_mode(void *send_info, int enable) |
1042 | { | |
1043 | struct smi_info *smi_info = send_info; | |
1044 | ||
1045 | if (!enable) | |
1046 | atomic_set(&smi_info->req_events, 0); | |
1047 | } | |
1048 | ||
1da177e4 LT |
1049 | static struct ipmi_smi_handlers handlers = |
1050 | { | |
1051 | .owner = THIS_MODULE, | |
453823ba | 1052 | .start_processing = smi_start_processing, |
1da177e4 LT |
1053 | .sender = sender, |
1054 | .request_events = request_events, | |
b9675136 | 1055 | .set_maintenance_mode = set_maintenance_mode, |
1da177e4 LT |
1056 | .set_run_to_completion = set_run_to_completion, |
1057 | .poll = poll, | |
1058 | }; | |
1059 | ||
1060 | /* There can be 4 IO ports passed in (with or without IRQs), 4 addresses, | |
1061 | a default IO port, and 1 ACPI/SPMI address. That sets SI_MAX_DRIVERS */ | |
1062 | ||
b0defcdb | 1063 | static LIST_HEAD(smi_infos); |
d6dfd131 | 1064 | static DEFINE_MUTEX(smi_infos_lock); |
b0defcdb | 1065 | static int smi_num; /* Used to sequence the SMIs */ |
1da177e4 | 1066 | |
1da177e4 | 1067 | #define DEFAULT_REGSPACING 1 |
dba9b4f6 | 1068 | #define DEFAULT_REGSIZE 1 |
1da177e4 LT |
1069 | |
1070 | static int si_trydefaults = 1; | |
1071 | static char *si_type[SI_MAX_PARMS]; | |
1072 | #define MAX_SI_TYPE_STR 30 | |
1073 | static char si_type_str[MAX_SI_TYPE_STR]; | |
1074 | static unsigned long addrs[SI_MAX_PARMS]; | |
1075 | static int num_addrs; | |
1076 | static unsigned int ports[SI_MAX_PARMS]; | |
1077 | static int num_ports; | |
1078 | static int irqs[SI_MAX_PARMS]; | |
1079 | static int num_irqs; | |
1080 | static int regspacings[SI_MAX_PARMS]; | |
0c8204b3 | 1081 | static int num_regspacings; |
1da177e4 | 1082 | static int regsizes[SI_MAX_PARMS]; |
0c8204b3 | 1083 | static int num_regsizes; |
1da177e4 | 1084 | static int regshifts[SI_MAX_PARMS]; |
0c8204b3 | 1085 | static int num_regshifts; |
1da177e4 | 1086 | static int slave_addrs[SI_MAX_PARMS]; |
0c8204b3 | 1087 | static int num_slave_addrs; |
1da177e4 | 1088 | |
b361e27b CM |
1089 | #define IPMI_IO_ADDR_SPACE 0 |
1090 | #define IPMI_MEM_ADDR_SPACE 1 | |
1d5636cc | 1091 | static char *addr_space_to_str[] = { "i/o", "mem" }; |
b361e27b CM |
1092 | |
1093 | static int hotmod_handler(const char *val, struct kernel_param *kp); | |
1094 | ||
1095 | module_param_call(hotmod, hotmod_handler, NULL, NULL, 0200); | |
1096 | MODULE_PARM_DESC(hotmod, "Add and remove interfaces. See" | |
1097 | " Documentation/IPMI.txt in the kernel sources for the" | |
1098 | " gory details."); | |
1da177e4 LT |
1099 | |
1100 | module_param_named(trydefaults, si_trydefaults, bool, 0); | |
1101 | MODULE_PARM_DESC(trydefaults, "Setting this to 'false' will disable the" | |
1102 | " default scan of the KCS and SMIC interface at the standard" | |
1103 | " address"); | |
1104 | module_param_string(type, si_type_str, MAX_SI_TYPE_STR, 0); | |
1105 | MODULE_PARM_DESC(type, "Defines the type of each interface, each" | |
1106 | " interface separated by commas. The types are 'kcs'," | |
1107 | " 'smic', and 'bt'. For example si_type=kcs,bt will set" | |
1108 | " the first interface to kcs and the second to bt"); | |
1109 | module_param_array(addrs, long, &num_addrs, 0); | |
1110 | MODULE_PARM_DESC(addrs, "Sets the memory address of each interface, the" | |
1111 | " addresses separated by commas. Only use if an interface" | |
1112 | " is in memory. Otherwise, set it to zero or leave" | |
1113 | " it blank."); | |
1114 | module_param_array(ports, int, &num_ports, 0); | |
1115 | MODULE_PARM_DESC(ports, "Sets the port address of each interface, the" | |
1116 | " addresses separated by commas. Only use if an interface" | |
1117 | " is a port. Otherwise, set it to zero or leave" | |
1118 | " it blank."); | |
1119 | module_param_array(irqs, int, &num_irqs, 0); | |
1120 | MODULE_PARM_DESC(irqs, "Sets the interrupt of each interface, the" | |
1121 | " addresses separated by commas. Only use if an interface" | |
1122 | " has an interrupt. Otherwise, set it to zero or leave" | |
1123 | " it blank."); | |
1124 | module_param_array(regspacings, int, &num_regspacings, 0); | |
1125 | MODULE_PARM_DESC(regspacings, "The number of bytes between the start address" | |
1126 | " and each successive register used by the interface. For" | |
1127 | " instance, if the start address is 0xca2 and the spacing" | |
1128 | " is 2, then the second address is at 0xca4. Defaults" | |
1129 | " to 1."); | |
1130 | module_param_array(regsizes, int, &num_regsizes, 0); | |
1131 | MODULE_PARM_DESC(regsizes, "The size of the specific IPMI register in bytes." | |
1132 | " This should generally be 1, 2, 4, or 8 for an 8-bit," | |
1133 | " 16-bit, 32-bit, or 64-bit register. Use this if you" | |
1134 | " the 8-bit IPMI register has to be read from a larger" | |
1135 | " register."); | |
1136 | module_param_array(regshifts, int, &num_regshifts, 0); | |
1137 | MODULE_PARM_DESC(regshifts, "The amount to shift the data read from the." | |
1138 | " IPMI register, in bits. For instance, if the data" | |
1139 | " is read from a 32-bit word and the IPMI data is in" | |
1140 | " bit 8-15, then the shift would be 8"); | |
1141 | module_param_array(slave_addrs, int, &num_slave_addrs, 0); | |
1142 | MODULE_PARM_DESC(slave_addrs, "Set the default IPMB slave address for" | |
1143 | " the controller. Normally this is 0x20, but can be" | |
1144 | " overridden by this parm. This is an array indexed" | |
1145 | " by interface number."); | |
a51f4a81 CM |
1146 | module_param_array(force_kipmid, int, &num_force_kipmid, 0); |
1147 | MODULE_PARM_DESC(force_kipmid, "Force the kipmi daemon to be enabled (1) or" | |
1148 | " disabled(0). Normally the IPMI driver auto-detects" | |
1149 | " this, but the value may be overridden by this parm."); | |
b361e27b CM |
1150 | module_param(unload_when_empty, int, 0); |
1151 | MODULE_PARM_DESC(unload_when_empty, "Unload the module if no interfaces are" | |
1152 | " specified or found, default is 1. Setting to 0" | |
1153 | " is useful for hot add of devices using hotmod."); | |
1da177e4 LT |
1154 | |
1155 | ||
b0defcdb | 1156 | static void std_irq_cleanup(struct smi_info *info) |
1da177e4 | 1157 | { |
b0defcdb CM |
1158 | if (info->si_type == SI_BT) |
1159 | /* Disable the interrupt in the BT interface. */ | |
1160 | info->io.outputb(&info->io, IPMI_BT_INTMASK_REG, 0); | |
1161 | free_irq(info->irq, info); | |
1da177e4 | 1162 | } |
1da177e4 LT |
1163 | |
1164 | static int std_irq_setup(struct smi_info *info) | |
1165 | { | |
1166 | int rv; | |
1167 | ||
b0defcdb | 1168 | if (!info->irq) |
1da177e4 LT |
1169 | return 0; |
1170 | ||
9dbf68f9 CM |
1171 | if (info->si_type == SI_BT) { |
1172 | rv = request_irq(info->irq, | |
1173 | si_bt_irq_handler, | |
ee6cd5f8 | 1174 | IRQF_SHARED | IRQF_DISABLED, |
9dbf68f9 CM |
1175 | DEVICE_NAME, |
1176 | info); | |
b0defcdb | 1177 | if (!rv) |
9dbf68f9 CM |
1178 | /* Enable the interrupt in the BT interface. */ |
1179 | info->io.outputb(&info->io, IPMI_BT_INTMASK_REG, | |
1180 | IPMI_BT_INTMASK_ENABLE_IRQ_BIT); | |
1181 | } else | |
1182 | rv = request_irq(info->irq, | |
1183 | si_irq_handler, | |
ee6cd5f8 | 1184 | IRQF_SHARED | IRQF_DISABLED, |
9dbf68f9 CM |
1185 | DEVICE_NAME, |
1186 | info); | |
1da177e4 LT |
1187 | if (rv) { |
1188 | printk(KERN_WARNING | |
1189 | "ipmi_si: %s unable to claim interrupt %d," | |
1190 | " running polled\n", | |
1191 | DEVICE_NAME, info->irq); | |
1192 | info->irq = 0; | |
1193 | } else { | |
b0defcdb | 1194 | info->irq_cleanup = std_irq_cleanup; |
1da177e4 LT |
1195 | printk(" Using irq %d\n", info->irq); |
1196 | } | |
1197 | ||
1198 | return rv; | |
1199 | } | |
1200 | ||
1da177e4 LT |
1201 | static unsigned char port_inb(struct si_sm_io *io, unsigned int offset) |
1202 | { | |
b0defcdb | 1203 | unsigned int addr = io->addr_data; |
1da177e4 | 1204 | |
b0defcdb | 1205 | return inb(addr + (offset * io->regspacing)); |
1da177e4 LT |
1206 | } |
1207 | ||
1208 | static void port_outb(struct si_sm_io *io, unsigned int offset, | |
1209 | unsigned char b) | |
1210 | { | |
b0defcdb | 1211 | unsigned int addr = io->addr_data; |
1da177e4 | 1212 | |
b0defcdb | 1213 | outb(b, addr + (offset * io->regspacing)); |
1da177e4 LT |
1214 | } |
1215 | ||
1216 | static unsigned char port_inw(struct si_sm_io *io, unsigned int offset) | |
1217 | { | |
b0defcdb | 1218 | unsigned int addr = io->addr_data; |
1da177e4 | 1219 | |
b0defcdb | 1220 | return (inw(addr + (offset * io->regspacing)) >> io->regshift) & 0xff; |
1da177e4 LT |
1221 | } |
1222 | ||
1223 | static void port_outw(struct si_sm_io *io, unsigned int offset, | |
1224 | unsigned char b) | |
1225 | { | |
b0defcdb | 1226 | unsigned int addr = io->addr_data; |
1da177e4 | 1227 | |
b0defcdb | 1228 | outw(b << io->regshift, addr + (offset * io->regspacing)); |
1da177e4 LT |
1229 | } |
1230 | ||
1231 | static unsigned char port_inl(struct si_sm_io *io, unsigned int offset) | |
1232 | { | |
b0defcdb | 1233 | unsigned int addr = io->addr_data; |
1da177e4 | 1234 | |
b0defcdb | 1235 | return (inl(addr + (offset * io->regspacing)) >> io->regshift) & 0xff; |
1da177e4 LT |
1236 | } |
1237 | ||
1238 | static void port_outl(struct si_sm_io *io, unsigned int offset, | |
1239 | unsigned char b) | |
1240 | { | |
b0defcdb | 1241 | unsigned int addr = io->addr_data; |
1da177e4 | 1242 | |
b0defcdb | 1243 | outl(b << io->regshift, addr+(offset * io->regspacing)); |
1da177e4 LT |
1244 | } |
1245 | ||
1246 | static void port_cleanup(struct smi_info *info) | |
1247 | { | |
b0defcdb | 1248 | unsigned int addr = info->io.addr_data; |
d61a3ead | 1249 | int idx; |
1da177e4 | 1250 | |
b0defcdb | 1251 | if (addr) { |
d61a3ead CM |
1252 | for (idx = 0; idx < info->io_size; idx++) { |
1253 | release_region(addr + idx * info->io.regspacing, | |
1254 | info->io.regsize); | |
1255 | } | |
1da177e4 | 1256 | } |
1da177e4 LT |
1257 | } |
1258 | ||
1259 | static int port_setup(struct smi_info *info) | |
1260 | { | |
b0defcdb | 1261 | unsigned int addr = info->io.addr_data; |
d61a3ead | 1262 | int idx; |
1da177e4 | 1263 | |
b0defcdb | 1264 | if (!addr) |
1da177e4 LT |
1265 | return -ENODEV; |
1266 | ||
1267 | info->io_cleanup = port_cleanup; | |
1268 | ||
1269 | /* Figure out the actual inb/inw/inl/etc routine to use based | |
1270 | upon the register size. */ | |
1271 | switch (info->io.regsize) { | |
1272 | case 1: | |
1273 | info->io.inputb = port_inb; | |
1274 | info->io.outputb = port_outb; | |
1275 | break; | |
1276 | case 2: | |
1277 | info->io.inputb = port_inw; | |
1278 | info->io.outputb = port_outw; | |
1279 | break; | |
1280 | case 4: | |
1281 | info->io.inputb = port_inl; | |
1282 | info->io.outputb = port_outl; | |
1283 | break; | |
1284 | default: | |
1285 | printk("ipmi_si: Invalid register size: %d\n", | |
1286 | info->io.regsize); | |
1287 | return -EINVAL; | |
1288 | } | |
1289 | ||
d61a3ead CM |
1290 | /* Some BIOSes reserve disjoint I/O regions in their ACPI |
1291 | * tables. This causes problems when trying to register the | |
1292 | * entire I/O region. Therefore we must register each I/O | |
1293 | * port separately. | |
1294 | */ | |
1295 | for (idx = 0; idx < info->io_size; idx++) { | |
1296 | if (request_region(addr + idx * info->io.regspacing, | |
1297 | info->io.regsize, DEVICE_NAME) == NULL) { | |
1298 | /* Undo allocations */ | |
1299 | while (idx--) { | |
1300 | release_region(addr + idx * info->io.regspacing, | |
1301 | info->io.regsize); | |
1302 | } | |
1303 | return -EIO; | |
1304 | } | |
1305 | } | |
1da177e4 LT |
1306 | return 0; |
1307 | } | |
1308 | ||
546cfdf4 | 1309 | static unsigned char intf_mem_inb(struct si_sm_io *io, unsigned int offset) |
1da177e4 LT |
1310 | { |
1311 | return readb((io->addr)+(offset * io->regspacing)); | |
1312 | } | |
1313 | ||
546cfdf4 | 1314 | static void intf_mem_outb(struct si_sm_io *io, unsigned int offset, |
1da177e4 LT |
1315 | unsigned char b) |
1316 | { | |
1317 | writeb(b, (io->addr)+(offset * io->regspacing)); | |
1318 | } | |
1319 | ||
546cfdf4 | 1320 | static unsigned char intf_mem_inw(struct si_sm_io *io, unsigned int offset) |
1da177e4 LT |
1321 | { |
1322 | return (readw((io->addr)+(offset * io->regspacing)) >> io->regshift) | |
64d9fe69 | 1323 | & 0xff; |
1da177e4 LT |
1324 | } |
1325 | ||
546cfdf4 | 1326 | static void intf_mem_outw(struct si_sm_io *io, unsigned int offset, |
1da177e4 LT |
1327 | unsigned char b) |
1328 | { | |
1329 | writeb(b << io->regshift, (io->addr)+(offset * io->regspacing)); | |
1330 | } | |
1331 | ||
546cfdf4 | 1332 | static unsigned char intf_mem_inl(struct si_sm_io *io, unsigned int offset) |
1da177e4 LT |
1333 | { |
1334 | return (readl((io->addr)+(offset * io->regspacing)) >> io->regshift) | |
64d9fe69 | 1335 | & 0xff; |
1da177e4 LT |
1336 | } |
1337 | ||
546cfdf4 | 1338 | static void intf_mem_outl(struct si_sm_io *io, unsigned int offset, |
1da177e4 LT |
1339 | unsigned char b) |
1340 | { | |
1341 | writel(b << io->regshift, (io->addr)+(offset * io->regspacing)); | |
1342 | } | |
1343 | ||
1344 | #ifdef readq | |
1345 | static unsigned char mem_inq(struct si_sm_io *io, unsigned int offset) | |
1346 | { | |
1347 | return (readq((io->addr)+(offset * io->regspacing)) >> io->regshift) | |
64d9fe69 | 1348 | & 0xff; |
1da177e4 LT |
1349 | } |
1350 | ||
1351 | static void mem_outq(struct si_sm_io *io, unsigned int offset, | |
1352 | unsigned char b) | |
1353 | { | |
1354 | writeq(b << io->regshift, (io->addr)+(offset * io->regspacing)); | |
1355 | } | |
1356 | #endif | |
1357 | ||
1358 | static void mem_cleanup(struct smi_info *info) | |
1359 | { | |
b0defcdb | 1360 | unsigned long addr = info->io.addr_data; |
1da177e4 LT |
1361 | int mapsize; |
1362 | ||
1363 | if (info->io.addr) { | |
1364 | iounmap(info->io.addr); | |
1365 | ||
1366 | mapsize = ((info->io_size * info->io.regspacing) | |
1367 | - (info->io.regspacing - info->io.regsize)); | |
1368 | ||
b0defcdb | 1369 | release_mem_region(addr, mapsize); |
1da177e4 | 1370 | } |
1da177e4 LT |
1371 | } |
1372 | ||
1373 | static int mem_setup(struct smi_info *info) | |
1374 | { | |
b0defcdb | 1375 | unsigned long addr = info->io.addr_data; |
1da177e4 LT |
1376 | int mapsize; |
1377 | ||
b0defcdb | 1378 | if (!addr) |
1da177e4 LT |
1379 | return -ENODEV; |
1380 | ||
1381 | info->io_cleanup = mem_cleanup; | |
1382 | ||
1383 | /* Figure out the actual readb/readw/readl/etc routine to use based | |
1384 | upon the register size. */ | |
1385 | switch (info->io.regsize) { | |
1386 | case 1: | |
546cfdf4 AD |
1387 | info->io.inputb = intf_mem_inb; |
1388 | info->io.outputb = intf_mem_outb; | |
1da177e4 LT |
1389 | break; |
1390 | case 2: | |
546cfdf4 AD |
1391 | info->io.inputb = intf_mem_inw; |
1392 | info->io.outputb = intf_mem_outw; | |
1da177e4 LT |
1393 | break; |
1394 | case 4: | |
546cfdf4 AD |
1395 | info->io.inputb = intf_mem_inl; |
1396 | info->io.outputb = intf_mem_outl; | |
1da177e4 LT |
1397 | break; |
1398 | #ifdef readq | |
1399 | case 8: | |
1400 | info->io.inputb = mem_inq; | |
1401 | info->io.outputb = mem_outq; | |
1402 | break; | |
1403 | #endif | |
1404 | default: | |
1405 | printk("ipmi_si: Invalid register size: %d\n", | |
1406 | info->io.regsize); | |
1407 | return -EINVAL; | |
1408 | } | |
1409 | ||
1410 | /* Calculate the total amount of memory to claim. This is an | |
1411 | * unusual looking calculation, but it avoids claiming any | |
1412 | * more memory than it has to. It will claim everything | |
1413 | * between the first address to the end of the last full | |
1414 | * register. */ | |
1415 | mapsize = ((info->io_size * info->io.regspacing) | |
1416 | - (info->io.regspacing - info->io.regsize)); | |
1417 | ||
b0defcdb | 1418 | if (request_mem_region(addr, mapsize, DEVICE_NAME) == NULL) |
1da177e4 LT |
1419 | return -EIO; |
1420 | ||
b0defcdb | 1421 | info->io.addr = ioremap(addr, mapsize); |
1da177e4 | 1422 | if (info->io.addr == NULL) { |
b0defcdb | 1423 | release_mem_region(addr, mapsize); |
1da177e4 LT |
1424 | return -EIO; |
1425 | } | |
1426 | return 0; | |
1427 | } | |
1428 | ||
b361e27b CM |
1429 | /* |
1430 | * Parms come in as <op1>[:op2[:op3...]]. ops are: | |
1431 | * add|remove,kcs|bt|smic,mem|i/o,<address>[,<opt1>[,<opt2>[,...]]] | |
1432 | * Options are: | |
1433 | * rsp=<regspacing> | |
1434 | * rsi=<regsize> | |
1435 | * rsh=<regshift> | |
1436 | * irq=<irq> | |
1437 | * ipmb=<ipmb addr> | |
1438 | */ | |
1439 | enum hotmod_op { HM_ADD, HM_REMOVE }; | |
1440 | struct hotmod_vals { | |
1441 | char *name; | |
1442 | int val; | |
1443 | }; | |
1444 | static struct hotmod_vals hotmod_ops[] = { | |
1445 | { "add", HM_ADD }, | |
1446 | { "remove", HM_REMOVE }, | |
1447 | { NULL } | |
1448 | }; | |
1449 | static struct hotmod_vals hotmod_si[] = { | |
1450 | { "kcs", SI_KCS }, | |
1451 | { "smic", SI_SMIC }, | |
1452 | { "bt", SI_BT }, | |
1453 | { NULL } | |
1454 | }; | |
1455 | static struct hotmod_vals hotmod_as[] = { | |
1456 | { "mem", IPMI_MEM_ADDR_SPACE }, | |
1457 | { "i/o", IPMI_IO_ADDR_SPACE }, | |
1458 | { NULL } | |
1459 | }; | |
1d5636cc | 1460 | |
b361e27b CM |
1461 | static int parse_str(struct hotmod_vals *v, int *val, char *name, char **curr) |
1462 | { | |
1463 | char *s; | |
1464 | int i; | |
1465 | ||
1466 | s = strchr(*curr, ','); | |
1467 | if (!s) { | |
1468 | printk(KERN_WARNING PFX "No hotmod %s given.\n", name); | |
1469 | return -EINVAL; | |
1470 | } | |
1471 | *s = '\0'; | |
1472 | s++; | |
1473 | for (i = 0; hotmod_ops[i].name; i++) { | |
1d5636cc | 1474 | if (strcmp(*curr, v[i].name) == 0) { |
b361e27b CM |
1475 | *val = v[i].val; |
1476 | *curr = s; | |
1477 | return 0; | |
1478 | } | |
1479 | } | |
1480 | ||
1481 | printk(KERN_WARNING PFX "Invalid hotmod %s '%s'\n", name, *curr); | |
1482 | return -EINVAL; | |
1483 | } | |
1484 | ||
1d5636cc CM |
1485 | static int check_hotmod_int_op(const char *curr, const char *option, |
1486 | const char *name, int *val) | |
1487 | { | |
1488 | char *n; | |
1489 | ||
1490 | if (strcmp(curr, name) == 0) { | |
1491 | if (!option) { | |
1492 | printk(KERN_WARNING PFX | |
1493 | "No option given for '%s'\n", | |
1494 | curr); | |
1495 | return -EINVAL; | |
1496 | } | |
1497 | *val = simple_strtoul(option, &n, 0); | |
1498 | if ((*n != '\0') || (*option == '\0')) { | |
1499 | printk(KERN_WARNING PFX | |
1500 | "Bad option given for '%s'\n", | |
1501 | curr); | |
1502 | return -EINVAL; | |
1503 | } | |
1504 | return 1; | |
1505 | } | |
1506 | return 0; | |
1507 | } | |
1508 | ||
b361e27b CM |
1509 | static int hotmod_handler(const char *val, struct kernel_param *kp) |
1510 | { | |
1511 | char *str = kstrdup(val, GFP_KERNEL); | |
1d5636cc | 1512 | int rv; |
b361e27b CM |
1513 | char *next, *curr, *s, *n, *o; |
1514 | enum hotmod_op op; | |
1515 | enum si_type si_type; | |
1516 | int addr_space; | |
1517 | unsigned long addr; | |
1518 | int regspacing; | |
1519 | int regsize; | |
1520 | int regshift; | |
1521 | int irq; | |
1522 | int ipmb; | |
1523 | int ival; | |
1d5636cc | 1524 | int len; |
b361e27b CM |
1525 | struct smi_info *info; |
1526 | ||
1527 | if (!str) | |
1528 | return -ENOMEM; | |
1529 | ||
1530 | /* Kill any trailing spaces, as we can get a "\n" from echo. */ | |
1d5636cc CM |
1531 | len = strlen(str); |
1532 | ival = len - 1; | |
b361e27b CM |
1533 | while ((ival >= 0) && isspace(str[ival])) { |
1534 | str[ival] = '\0'; | |
1535 | ival--; | |
1536 | } | |
1537 | ||
1538 | for (curr = str; curr; curr = next) { | |
1539 | regspacing = 1; | |
1540 | regsize = 1; | |
1541 | regshift = 0; | |
1542 | irq = 0; | |
1543 | ipmb = 0x20; | |
1544 | ||
1545 | next = strchr(curr, ':'); | |
1546 | if (next) { | |
1547 | *next = '\0'; | |
1548 | next++; | |
1549 | } | |
1550 | ||
1551 | rv = parse_str(hotmod_ops, &ival, "operation", &curr); | |
1552 | if (rv) | |
1553 | break; | |
1554 | op = ival; | |
1555 | ||
1556 | rv = parse_str(hotmod_si, &ival, "interface type", &curr); | |
1557 | if (rv) | |
1558 | break; | |
1559 | si_type = ival; | |
1560 | ||
1561 | rv = parse_str(hotmod_as, &addr_space, "address space", &curr); | |
1562 | if (rv) | |
1563 | break; | |
1564 | ||
1565 | s = strchr(curr, ','); | |
1566 | if (s) { | |
1567 | *s = '\0'; | |
1568 | s++; | |
1569 | } | |
1570 | addr = simple_strtoul(curr, &n, 0); | |
1571 | if ((*n != '\0') || (*curr == '\0')) { | |
1572 | printk(KERN_WARNING PFX "Invalid hotmod address" | |
1573 | " '%s'\n", curr); | |
1574 | break; | |
1575 | } | |
1576 | ||
1577 | while (s) { | |
1578 | curr = s; | |
1579 | s = strchr(curr, ','); | |
1580 | if (s) { | |
1581 | *s = '\0'; | |
1582 | s++; | |
1583 | } | |
1584 | o = strchr(curr, '='); | |
1585 | if (o) { | |
1586 | *o = '\0'; | |
1587 | o++; | |
1588 | } | |
1d5636cc CM |
1589 | rv = check_hotmod_int_op(curr, o, "rsp", ®spacing); |
1590 | if (rv < 0) | |
b361e27b | 1591 | goto out; |
1d5636cc CM |
1592 | else if (rv) |
1593 | continue; | |
1594 | rv = check_hotmod_int_op(curr, o, "rsi", ®size); | |
1595 | if (rv < 0) | |
1596 | goto out; | |
1597 | else if (rv) | |
1598 | continue; | |
1599 | rv = check_hotmod_int_op(curr, o, "rsh", ®shift); | |
1600 | if (rv < 0) | |
1601 | goto out; | |
1602 | else if (rv) | |
1603 | continue; | |
1604 | rv = check_hotmod_int_op(curr, o, "irq", &irq); | |
1605 | if (rv < 0) | |
1606 | goto out; | |
1607 | else if (rv) | |
1608 | continue; | |
1609 | rv = check_hotmod_int_op(curr, o, "ipmb", &ipmb); | |
1610 | if (rv < 0) | |
1611 | goto out; | |
1612 | else if (rv) | |
1613 | continue; | |
1614 | ||
1615 | rv = -EINVAL; | |
1616 | printk(KERN_WARNING PFX | |
1617 | "Invalid hotmod option '%s'\n", | |
1618 | curr); | |
1619 | goto out; | |
b361e27b CM |
1620 | } |
1621 | ||
1622 | if (op == HM_ADD) { | |
1623 | info = kzalloc(sizeof(*info), GFP_KERNEL); | |
1624 | if (!info) { | |
1625 | rv = -ENOMEM; | |
1626 | goto out; | |
1627 | } | |
1628 | ||
1629 | info->addr_source = "hotmod"; | |
1630 | info->si_type = si_type; | |
1631 | info->io.addr_data = addr; | |
1632 | info->io.addr_type = addr_space; | |
1633 | if (addr_space == IPMI_MEM_ADDR_SPACE) | |
1634 | info->io_setup = mem_setup; | |
1635 | else | |
1636 | info->io_setup = port_setup; | |
1637 | ||
1638 | info->io.addr = NULL; | |
1639 | info->io.regspacing = regspacing; | |
1640 | if (!info->io.regspacing) | |
1641 | info->io.regspacing = DEFAULT_REGSPACING; | |
1642 | info->io.regsize = regsize; | |
1643 | if (!info->io.regsize) | |
1644 | info->io.regsize = DEFAULT_REGSPACING; | |
1645 | info->io.regshift = regshift; | |
1646 | info->irq = irq; | |
1647 | if (info->irq) | |
1648 | info->irq_setup = std_irq_setup; | |
1649 | info->slave_addr = ipmb; | |
1650 | ||
1651 | try_smi_init(info); | |
1652 | } else { | |
1653 | /* remove */ | |
1654 | struct smi_info *e, *tmp_e; | |
1655 | ||
1656 | mutex_lock(&smi_infos_lock); | |
1657 | list_for_each_entry_safe(e, tmp_e, &smi_infos, link) { | |
1658 | if (e->io.addr_type != addr_space) | |
1659 | continue; | |
1660 | if (e->si_type != si_type) | |
1661 | continue; | |
1662 | if (e->io.addr_data == addr) | |
1663 | cleanup_one_si(e); | |
1664 | } | |
1665 | mutex_unlock(&smi_infos_lock); | |
1666 | } | |
1667 | } | |
1d5636cc | 1668 | rv = len; |
b361e27b CM |
1669 | out: |
1670 | kfree(str); | |
1671 | return rv; | |
1672 | } | |
b0defcdb CM |
1673 | |
1674 | static __devinit void hardcode_find_bmc(void) | |
1da177e4 | 1675 | { |
b0defcdb | 1676 | int i; |
1da177e4 LT |
1677 | struct smi_info *info; |
1678 | ||
b0defcdb CM |
1679 | for (i = 0; i < SI_MAX_PARMS; i++) { |
1680 | if (!ports[i] && !addrs[i]) | |
1681 | continue; | |
1da177e4 | 1682 | |
b0defcdb CM |
1683 | info = kzalloc(sizeof(*info), GFP_KERNEL); |
1684 | if (!info) | |
1685 | return; | |
1da177e4 | 1686 | |
b0defcdb | 1687 | info->addr_source = "hardcoded"; |
1da177e4 | 1688 | |
1d5636cc | 1689 | if (!si_type[i] || strcmp(si_type[i], "kcs") == 0) { |
b0defcdb | 1690 | info->si_type = SI_KCS; |
1d5636cc | 1691 | } else if (strcmp(si_type[i], "smic") == 0) { |
b0defcdb | 1692 | info->si_type = SI_SMIC; |
1d5636cc | 1693 | } else if (strcmp(si_type[i], "bt") == 0) { |
b0defcdb CM |
1694 | info->si_type = SI_BT; |
1695 | } else { | |
1696 | printk(KERN_WARNING | |
1697 | "ipmi_si: Interface type specified " | |
1698 | "for interface %d, was invalid: %s\n", | |
1699 | i, si_type[i]); | |
1700 | kfree(info); | |
1701 | continue; | |
1702 | } | |
1da177e4 | 1703 | |
b0defcdb CM |
1704 | if (ports[i]) { |
1705 | /* An I/O port */ | |
1706 | info->io_setup = port_setup; | |
1707 | info->io.addr_data = ports[i]; | |
1708 | info->io.addr_type = IPMI_IO_ADDR_SPACE; | |
1709 | } else if (addrs[i]) { | |
1710 | /* A memory port */ | |
1711 | info->io_setup = mem_setup; | |
1712 | info->io.addr_data = addrs[i]; | |
1713 | info->io.addr_type = IPMI_MEM_ADDR_SPACE; | |
1714 | } else { | |
1715 | printk(KERN_WARNING | |
1716 | "ipmi_si: Interface type specified " | |
1717 | "for interface %d, " | |
1718 | "but port and address were not set or " | |
1719 | "set to zero.\n", i); | |
1720 | kfree(info); | |
1721 | continue; | |
1722 | } | |
1da177e4 | 1723 | |
b0defcdb CM |
1724 | info->io.addr = NULL; |
1725 | info->io.regspacing = regspacings[i]; | |
1726 | if (!info->io.regspacing) | |
1727 | info->io.regspacing = DEFAULT_REGSPACING; | |
1728 | info->io.regsize = regsizes[i]; | |
1729 | if (!info->io.regsize) | |
1730 | info->io.regsize = DEFAULT_REGSPACING; | |
1731 | info->io.regshift = regshifts[i]; | |
1732 | info->irq = irqs[i]; | |
1733 | if (info->irq) | |
1734 | info->irq_setup = std_irq_setup; | |
1da177e4 | 1735 | |
b0defcdb CM |
1736 | try_smi_init(info); |
1737 | } | |
1738 | } | |
1da177e4 | 1739 | |
8466361a | 1740 | #ifdef CONFIG_ACPI |
1da177e4 LT |
1741 | |
1742 | #include <linux/acpi.h> | |
1743 | ||
1744 | /* Once we get an ACPI failure, we don't try any more, because we go | |
1745 | through the tables sequentially. Once we don't find a table, there | |
1746 | are no more. */ | |
0c8204b3 | 1747 | static int acpi_failure; |
1da177e4 LT |
1748 | |
1749 | /* For GPE-type interrupts. */ | |
1750 | static u32 ipmi_acpi_gpe(void *context) | |
1751 | { | |
1752 | struct smi_info *smi_info = context; | |
1753 | unsigned long flags; | |
1754 | #ifdef DEBUG_TIMING | |
1755 | struct timeval t; | |
1756 | #endif | |
1757 | ||
1758 | spin_lock_irqsave(&(smi_info->si_lock), flags); | |
1759 | ||
1760 | spin_lock(&smi_info->count_lock); | |
1761 | smi_info->interrupts++; | |
1762 | spin_unlock(&smi_info->count_lock); | |
1763 | ||
1da177e4 LT |
1764 | #ifdef DEBUG_TIMING |
1765 | do_gettimeofday(&t); | |
1766 | printk("**ACPI_GPE: %d.%9.9d\n", t.tv_sec, t.tv_usec); | |
1767 | #endif | |
1768 | smi_event_handler(smi_info, 0); | |
1da177e4 LT |
1769 | spin_unlock_irqrestore(&(smi_info->si_lock), flags); |
1770 | ||
1771 | return ACPI_INTERRUPT_HANDLED; | |
1772 | } | |
1773 | ||
b0defcdb CM |
1774 | static void acpi_gpe_irq_cleanup(struct smi_info *info) |
1775 | { | |
1776 | if (!info->irq) | |
1777 | return; | |
1778 | ||
1779 | acpi_remove_gpe_handler(NULL, info->irq, &ipmi_acpi_gpe); | |
1780 | } | |
1781 | ||
1da177e4 LT |
1782 | static int acpi_gpe_irq_setup(struct smi_info *info) |
1783 | { | |
1784 | acpi_status status; | |
1785 | ||
b0defcdb | 1786 | if (!info->irq) |
1da177e4 LT |
1787 | return 0; |
1788 | ||
1789 | /* FIXME - is level triggered right? */ | |
1790 | status = acpi_install_gpe_handler(NULL, | |
1791 | info->irq, | |
1792 | ACPI_GPE_LEVEL_TRIGGERED, | |
1793 | &ipmi_acpi_gpe, | |
1794 | info); | |
1795 | if (status != AE_OK) { | |
1796 | printk(KERN_WARNING | |
1797 | "ipmi_si: %s unable to claim ACPI GPE %d," | |
1798 | " running polled\n", | |
1799 | DEVICE_NAME, info->irq); | |
1800 | info->irq = 0; | |
1801 | return -EINVAL; | |
1802 | } else { | |
b0defcdb | 1803 | info->irq_cleanup = acpi_gpe_irq_cleanup; |
1da177e4 LT |
1804 | printk(" Using ACPI GPE %d\n", info->irq); |
1805 | return 0; | |
1806 | } | |
1807 | } | |
1808 | ||
1da177e4 LT |
1809 | /* |
1810 | * Defined at | |
1811 | * http://h21007.www2.hp.com/dspp/files/unprotected/devresource/Docs/TechPapers/IA64/hpspmi.pdf | |
1812 | */ | |
1813 | struct SPMITable { | |
1814 | s8 Signature[4]; | |
1815 | u32 Length; | |
1816 | u8 Revision; | |
1817 | u8 Checksum; | |
1818 | s8 OEMID[6]; | |
1819 | s8 OEMTableID[8]; | |
1820 | s8 OEMRevision[4]; | |
1821 | s8 CreatorID[4]; | |
1822 | s8 CreatorRevision[4]; | |
1823 | u8 InterfaceType; | |
1824 | u8 IPMIlegacy; | |
1825 | s16 SpecificationRevision; | |
1826 | ||
1827 | /* | |
1828 | * Bit 0 - SCI interrupt supported | |
1829 | * Bit 1 - I/O APIC/SAPIC | |
1830 | */ | |
1831 | u8 InterruptType; | |
1832 | ||
1833 | /* If bit 0 of InterruptType is set, then this is the SCI | |
1834 | interrupt in the GPEx_STS register. */ | |
1835 | u8 GPE; | |
1836 | ||
1837 | s16 Reserved; | |
1838 | ||
1839 | /* If bit 1 of InterruptType is set, then this is the I/O | |
1840 | APIC/SAPIC interrupt. */ | |
1841 | u32 GlobalSystemInterrupt; | |
1842 | ||
1843 | /* The actual register address. */ | |
1844 | struct acpi_generic_address addr; | |
1845 | ||
1846 | u8 UID[4]; | |
1847 | ||
1848 | s8 spmi_id[1]; /* A '\0' terminated array starts here. */ | |
1849 | }; | |
1850 | ||
b0defcdb | 1851 | static __devinit int try_init_acpi(struct SPMITable *spmi) |
1da177e4 LT |
1852 | { |
1853 | struct smi_info *info; | |
1da177e4 LT |
1854 | u8 addr_space; |
1855 | ||
1da177e4 LT |
1856 | if (spmi->IPMIlegacy != 1) { |
1857 | printk(KERN_INFO "IPMI: Bad SPMI legacy %d\n", spmi->IPMIlegacy); | |
1858 | return -ENODEV; | |
1859 | } | |
1860 | ||
15a58ed1 | 1861 | if (spmi->addr.space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) |
1da177e4 LT |
1862 | addr_space = IPMI_MEM_ADDR_SPACE; |
1863 | else | |
1864 | addr_space = IPMI_IO_ADDR_SPACE; | |
b0defcdb CM |
1865 | |
1866 | info = kzalloc(sizeof(*info), GFP_KERNEL); | |
1867 | if (!info) { | |
1868 | printk(KERN_ERR "ipmi_si: Could not allocate SI data (3)\n"); | |
1869 | return -ENOMEM; | |
1870 | } | |
1871 | ||
1872 | info->addr_source = "ACPI"; | |
1da177e4 | 1873 | |
1da177e4 LT |
1874 | /* Figure out the interface type. */ |
1875 | switch (spmi->InterfaceType) | |
1876 | { | |
1877 | case 1: /* KCS */ | |
b0defcdb | 1878 | info->si_type = SI_KCS; |
1da177e4 | 1879 | break; |
1da177e4 | 1880 | case 2: /* SMIC */ |
b0defcdb | 1881 | info->si_type = SI_SMIC; |
1da177e4 | 1882 | break; |
1da177e4 | 1883 | case 3: /* BT */ |
b0defcdb | 1884 | info->si_type = SI_BT; |
1da177e4 | 1885 | break; |
1da177e4 LT |
1886 | default: |
1887 | printk(KERN_INFO "ipmi_si: Unknown ACPI/SPMI SI type %d\n", | |
1888 | spmi->InterfaceType); | |
b0defcdb | 1889 | kfree(info); |
1da177e4 LT |
1890 | return -EIO; |
1891 | } | |
1892 | ||
1da177e4 LT |
1893 | if (spmi->InterruptType & 1) { |
1894 | /* We've got a GPE interrupt. */ | |
1895 | info->irq = spmi->GPE; | |
1896 | info->irq_setup = acpi_gpe_irq_setup; | |
1da177e4 LT |
1897 | } else if (spmi->InterruptType & 2) { |
1898 | /* We've got an APIC/SAPIC interrupt. */ | |
1899 | info->irq = spmi->GlobalSystemInterrupt; | |
1900 | info->irq_setup = std_irq_setup; | |
1da177e4 LT |
1901 | } else { |
1902 | /* Use the default interrupt setting. */ | |
1903 | info->irq = 0; | |
1904 | info->irq_setup = NULL; | |
1905 | } | |
1906 | ||
15a58ed1 | 1907 | if (spmi->addr.bit_width) { |
35bc37a0 | 1908 | /* A (hopefully) properly formed register bit width. */ |
15a58ed1 | 1909 | info->io.regspacing = spmi->addr.bit_width / 8; |
35bc37a0 | 1910 | } else { |
35bc37a0 CM |
1911 | info->io.regspacing = DEFAULT_REGSPACING; |
1912 | } | |
b0defcdb | 1913 | info->io.regsize = info->io.regspacing; |
15a58ed1 | 1914 | info->io.regshift = spmi->addr.bit_offset; |
1da177e4 | 1915 | |
15a58ed1 | 1916 | if (spmi->addr.space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) { |
1da177e4 | 1917 | info->io_setup = mem_setup; |
8fe1425a | 1918 | info->io.addr_type = IPMI_MEM_ADDR_SPACE; |
15a58ed1 | 1919 | } else if (spmi->addr.space_id == ACPI_ADR_SPACE_SYSTEM_IO) { |
1da177e4 | 1920 | info->io_setup = port_setup; |
8fe1425a | 1921 | info->io.addr_type = IPMI_IO_ADDR_SPACE; |
1da177e4 LT |
1922 | } else { |
1923 | kfree(info); | |
1924 | printk("ipmi_si: Unknown ACPI I/O Address type\n"); | |
1925 | return -EIO; | |
1926 | } | |
b0defcdb | 1927 | info->io.addr_data = spmi->addr.address; |
1da177e4 | 1928 | |
b0defcdb | 1929 | try_smi_init(info); |
1da177e4 | 1930 | |
1da177e4 LT |
1931 | return 0; |
1932 | } | |
b0defcdb CM |
1933 | |
1934 | static __devinit void acpi_find_bmc(void) | |
1935 | { | |
1936 | acpi_status status; | |
1937 | struct SPMITable *spmi; | |
1938 | int i; | |
1939 | ||
1940 | if (acpi_disabled) | |
1941 | return; | |
1942 | ||
1943 | if (acpi_failure) | |
1944 | return; | |
1945 | ||
1946 | for (i = 0; ; i++) { | |
15a58ed1 AS |
1947 | status = acpi_get_table(ACPI_SIG_SPMI, i+1, |
1948 | (struct acpi_table_header **)&spmi); | |
b0defcdb CM |
1949 | if (status != AE_OK) |
1950 | return; | |
1951 | ||
1952 | try_init_acpi(spmi); | |
1953 | } | |
1954 | } | |
1da177e4 LT |
1955 | #endif |
1956 | ||
a9fad4cc | 1957 | #ifdef CONFIG_DMI |
b0defcdb | 1958 | struct dmi_ipmi_data |
1da177e4 LT |
1959 | { |
1960 | u8 type; | |
1961 | u8 addr_space; | |
1962 | unsigned long base_addr; | |
1963 | u8 irq; | |
1964 | u8 offset; | |
1965 | u8 slave_addr; | |
b0defcdb | 1966 | }; |
1da177e4 | 1967 | |
1855256c | 1968 | static int __devinit decode_dmi(const struct dmi_header *dm, |
b0defcdb | 1969 | struct dmi_ipmi_data *dmi) |
1da177e4 | 1970 | { |
1855256c | 1971 | const u8 *data = (const u8 *)dm; |
1da177e4 LT |
1972 | unsigned long base_addr; |
1973 | u8 reg_spacing; | |
b224cd3a | 1974 | u8 len = dm->length; |
1da177e4 | 1975 | |
b0defcdb | 1976 | dmi->type = data[4]; |
1da177e4 LT |
1977 | |
1978 | memcpy(&base_addr, data+8, sizeof(unsigned long)); | |
1979 | if (len >= 0x11) { | |
1980 | if (base_addr & 1) { | |
1981 | /* I/O */ | |
1982 | base_addr &= 0xFFFE; | |
b0defcdb | 1983 | dmi->addr_space = IPMI_IO_ADDR_SPACE; |
1da177e4 LT |
1984 | } |
1985 | else { | |
1986 | /* Memory */ | |
b0defcdb | 1987 | dmi->addr_space = IPMI_MEM_ADDR_SPACE; |
1da177e4 LT |
1988 | } |
1989 | /* If bit 4 of byte 0x10 is set, then the lsb for the address | |
1990 | is odd. */ | |
b0defcdb | 1991 | dmi->base_addr = base_addr | ((data[0x10] & 0x10) >> 4); |
1da177e4 | 1992 | |
b0defcdb | 1993 | dmi->irq = data[0x11]; |
1da177e4 LT |
1994 | |
1995 | /* The top two bits of byte 0x10 hold the register spacing. */ | |
b224cd3a | 1996 | reg_spacing = (data[0x10] & 0xC0) >> 6; |
1da177e4 LT |
1997 | switch(reg_spacing){ |
1998 | case 0x00: /* Byte boundaries */ | |
b0defcdb | 1999 | dmi->offset = 1; |
1da177e4 LT |
2000 | break; |
2001 | case 0x01: /* 32-bit boundaries */ | |
b0defcdb | 2002 | dmi->offset = 4; |
1da177e4 LT |
2003 | break; |
2004 | case 0x02: /* 16-byte boundaries */ | |
b0defcdb | 2005 | dmi->offset = 16; |
1da177e4 LT |
2006 | break; |
2007 | default: | |
2008 | /* Some other interface, just ignore it. */ | |
2009 | return -EIO; | |
2010 | } | |
2011 | } else { | |
2012 | /* Old DMI spec. */ | |
92068801 CM |
2013 | /* Note that technically, the lower bit of the base |
2014 | * address should be 1 if the address is I/O and 0 if | |
2015 | * the address is in memory. So many systems get that | |
2016 | * wrong (and all that I have seen are I/O) so we just | |
2017 | * ignore that bit and assume I/O. Systems that use | |
2018 | * memory should use the newer spec, anyway. */ | |
b0defcdb CM |
2019 | dmi->base_addr = base_addr & 0xfffe; |
2020 | dmi->addr_space = IPMI_IO_ADDR_SPACE; | |
2021 | dmi->offset = 1; | |
1da177e4 LT |
2022 | } |
2023 | ||
b0defcdb | 2024 | dmi->slave_addr = data[6]; |
1da177e4 | 2025 | |
b0defcdb | 2026 | return 0; |
1da177e4 LT |
2027 | } |
2028 | ||
b0defcdb | 2029 | static __devinit void try_init_dmi(struct dmi_ipmi_data *ipmi_data) |
1da177e4 | 2030 | { |
b0defcdb | 2031 | struct smi_info *info; |
1da177e4 | 2032 | |
b0defcdb CM |
2033 | info = kzalloc(sizeof(*info), GFP_KERNEL); |
2034 | if (!info) { | |
2035 | printk(KERN_ERR | |
2036 | "ipmi_si: Could not allocate SI data\n"); | |
2037 | return; | |
1da177e4 | 2038 | } |
1da177e4 | 2039 | |
b0defcdb | 2040 | info->addr_source = "SMBIOS"; |
1da177e4 | 2041 | |
e8b33617 | 2042 | switch (ipmi_data->type) { |
b0defcdb CM |
2043 | case 0x01: /* KCS */ |
2044 | info->si_type = SI_KCS; | |
2045 | break; | |
2046 | case 0x02: /* SMIC */ | |
2047 | info->si_type = SI_SMIC; | |
2048 | break; | |
2049 | case 0x03: /* BT */ | |
2050 | info->si_type = SI_BT; | |
2051 | break; | |
2052 | default: | |
80cd6920 | 2053 | kfree(info); |
b0defcdb | 2054 | return; |
1da177e4 | 2055 | } |
1da177e4 | 2056 | |
b0defcdb CM |
2057 | switch (ipmi_data->addr_space) { |
2058 | case IPMI_MEM_ADDR_SPACE: | |
1da177e4 | 2059 | info->io_setup = mem_setup; |
b0defcdb CM |
2060 | info->io.addr_type = IPMI_MEM_ADDR_SPACE; |
2061 | break; | |
2062 | ||
2063 | case IPMI_IO_ADDR_SPACE: | |
1da177e4 | 2064 | info->io_setup = port_setup; |
b0defcdb CM |
2065 | info->io.addr_type = IPMI_IO_ADDR_SPACE; |
2066 | break; | |
2067 | ||
2068 | default: | |
1da177e4 | 2069 | kfree(info); |
b0defcdb CM |
2070 | printk(KERN_WARNING |
2071 | "ipmi_si: Unknown SMBIOS I/O Address type: %d.\n", | |
2072 | ipmi_data->addr_space); | |
2073 | return; | |
1da177e4 | 2074 | } |
b0defcdb | 2075 | info->io.addr_data = ipmi_data->base_addr; |
1da177e4 | 2076 | |
b0defcdb CM |
2077 | info->io.regspacing = ipmi_data->offset; |
2078 | if (!info->io.regspacing) | |
1da177e4 LT |
2079 | info->io.regspacing = DEFAULT_REGSPACING; |
2080 | info->io.regsize = DEFAULT_REGSPACING; | |
b0defcdb | 2081 | info->io.regshift = 0; |
1da177e4 LT |
2082 | |
2083 | info->slave_addr = ipmi_data->slave_addr; | |
2084 | ||
b0defcdb CM |
2085 | info->irq = ipmi_data->irq; |
2086 | if (info->irq) | |
2087 | info->irq_setup = std_irq_setup; | |
1da177e4 | 2088 | |
b0defcdb CM |
2089 | try_smi_init(info); |
2090 | } | |
1da177e4 | 2091 | |
b0defcdb CM |
2092 | static void __devinit dmi_find_bmc(void) |
2093 | { | |
1855256c | 2094 | const struct dmi_device *dev = NULL; |
b0defcdb CM |
2095 | struct dmi_ipmi_data data; |
2096 | int rv; | |
2097 | ||
2098 | while ((dev = dmi_find_device(DMI_DEV_TYPE_IPMI, NULL, dev))) { | |
397f4ebf | 2099 | memset(&data, 0, sizeof(data)); |
1855256c JG |
2100 | rv = decode_dmi((const struct dmi_header *) dev->device_data, |
2101 | &data); | |
b0defcdb CM |
2102 | if (!rv) |
2103 | try_init_dmi(&data); | |
2104 | } | |
1da177e4 | 2105 | } |
a9fad4cc | 2106 | #endif /* CONFIG_DMI */ |
1da177e4 LT |
2107 | |
2108 | #ifdef CONFIG_PCI | |
2109 | ||
b0defcdb CM |
2110 | #define PCI_ERMC_CLASSCODE 0x0C0700 |
2111 | #define PCI_ERMC_CLASSCODE_MASK 0xffffff00 | |
2112 | #define PCI_ERMC_CLASSCODE_TYPE_MASK 0xff | |
2113 | #define PCI_ERMC_CLASSCODE_TYPE_SMIC 0x00 | |
2114 | #define PCI_ERMC_CLASSCODE_TYPE_KCS 0x01 | |
2115 | #define PCI_ERMC_CLASSCODE_TYPE_BT 0x02 | |
2116 | ||
1da177e4 LT |
2117 | #define PCI_HP_VENDOR_ID 0x103C |
2118 | #define PCI_MMC_DEVICE_ID 0x121A | |
2119 | #define PCI_MMC_ADDR_CW 0x10 | |
2120 | ||
b0defcdb CM |
2121 | static void ipmi_pci_cleanup(struct smi_info *info) |
2122 | { | |
2123 | struct pci_dev *pdev = info->addr_source_data; | |
2124 | ||
2125 | pci_disable_device(pdev); | |
2126 | } | |
1da177e4 | 2127 | |
b0defcdb CM |
2128 | static int __devinit ipmi_pci_probe(struct pci_dev *pdev, |
2129 | const struct pci_device_id *ent) | |
1da177e4 | 2130 | { |
b0defcdb CM |
2131 | int rv; |
2132 | int class_type = pdev->class & PCI_ERMC_CLASSCODE_TYPE_MASK; | |
2133 | struct smi_info *info; | |
2134 | int first_reg_offset = 0; | |
1da177e4 | 2135 | |
b0defcdb CM |
2136 | info = kzalloc(sizeof(*info), GFP_KERNEL); |
2137 | if (!info) | |
1cd441f9 | 2138 | return -ENOMEM; |
1da177e4 | 2139 | |
b0defcdb | 2140 | info->addr_source = "PCI"; |
1da177e4 | 2141 | |
b0defcdb CM |
2142 | switch (class_type) { |
2143 | case PCI_ERMC_CLASSCODE_TYPE_SMIC: | |
2144 | info->si_type = SI_SMIC; | |
2145 | break; | |
1da177e4 | 2146 | |
b0defcdb CM |
2147 | case PCI_ERMC_CLASSCODE_TYPE_KCS: |
2148 | info->si_type = SI_KCS; | |
2149 | break; | |
2150 | ||
2151 | case PCI_ERMC_CLASSCODE_TYPE_BT: | |
2152 | info->si_type = SI_BT; | |
2153 | break; | |
2154 | ||
2155 | default: | |
2156 | kfree(info); | |
2157 | printk(KERN_INFO "ipmi_si: %s: Unknown IPMI type: %d\n", | |
2158 | pci_name(pdev), class_type); | |
1cd441f9 | 2159 | return -ENOMEM; |
1da177e4 LT |
2160 | } |
2161 | ||
b0defcdb CM |
2162 | rv = pci_enable_device(pdev); |
2163 | if (rv) { | |
2164 | printk(KERN_ERR "ipmi_si: %s: couldn't enable PCI device\n", | |
2165 | pci_name(pdev)); | |
2166 | kfree(info); | |
2167 | return rv; | |
1da177e4 LT |
2168 | } |
2169 | ||
b0defcdb CM |
2170 | info->addr_source_cleanup = ipmi_pci_cleanup; |
2171 | info->addr_source_data = pdev; | |
1da177e4 | 2172 | |
b0defcdb CM |
2173 | if (pdev->subsystem_vendor == PCI_HP_VENDOR_ID) |
2174 | first_reg_offset = 1; | |
1da177e4 | 2175 | |
b0defcdb CM |
2176 | if (pci_resource_flags(pdev, 0) & IORESOURCE_IO) { |
2177 | info->io_setup = port_setup; | |
2178 | info->io.addr_type = IPMI_IO_ADDR_SPACE; | |
2179 | } else { | |
2180 | info->io_setup = mem_setup; | |
2181 | info->io.addr_type = IPMI_MEM_ADDR_SPACE; | |
1da177e4 | 2182 | } |
b0defcdb | 2183 | info->io.addr_data = pci_resource_start(pdev, 0); |
1da177e4 | 2184 | |
b0defcdb | 2185 | info->io.regspacing = DEFAULT_REGSPACING; |
1da177e4 | 2186 | info->io.regsize = DEFAULT_REGSPACING; |
b0defcdb | 2187 | info->io.regshift = 0; |
1da177e4 | 2188 | |
b0defcdb CM |
2189 | info->irq = pdev->irq; |
2190 | if (info->irq) | |
2191 | info->irq_setup = std_irq_setup; | |
1da177e4 | 2192 | |
50c812b2 | 2193 | info->dev = &pdev->dev; |
fca3b747 | 2194 | pci_set_drvdata(pdev, info); |
50c812b2 | 2195 | |
b0defcdb CM |
2196 | return try_smi_init(info); |
2197 | } | |
1da177e4 | 2198 | |
b0defcdb CM |
2199 | static void __devexit ipmi_pci_remove(struct pci_dev *pdev) |
2200 | { | |
fca3b747 CM |
2201 | struct smi_info *info = pci_get_drvdata(pdev); |
2202 | cleanup_one_si(info); | |
b0defcdb | 2203 | } |
1da177e4 | 2204 | |
b0defcdb CM |
2205 | #ifdef CONFIG_PM |
2206 | static int ipmi_pci_suspend(struct pci_dev *pdev, pm_message_t state) | |
2207 | { | |
1da177e4 LT |
2208 | return 0; |
2209 | } | |
1da177e4 | 2210 | |
b0defcdb | 2211 | static int ipmi_pci_resume(struct pci_dev *pdev) |
1da177e4 | 2212 | { |
b0defcdb CM |
2213 | return 0; |
2214 | } | |
1da177e4 | 2215 | #endif |
1da177e4 | 2216 | |
b0defcdb CM |
2217 | static struct pci_device_id ipmi_pci_devices[] = { |
2218 | { PCI_DEVICE(PCI_HP_VENDOR_ID, PCI_MMC_DEVICE_ID) }, | |
248bdd5e KC |
2219 | { PCI_DEVICE_CLASS(PCI_ERMC_CLASSCODE, PCI_ERMC_CLASSCODE_MASK) }, |
2220 | { 0, } | |
b0defcdb CM |
2221 | }; |
2222 | MODULE_DEVICE_TABLE(pci, ipmi_pci_devices); | |
2223 | ||
2224 | static struct pci_driver ipmi_pci_driver = { | |
2225 | .name = DEVICE_NAME, | |
2226 | .id_table = ipmi_pci_devices, | |
2227 | .probe = ipmi_pci_probe, | |
2228 | .remove = __devexit_p(ipmi_pci_remove), | |
2229 | #ifdef CONFIG_PM | |
2230 | .suspend = ipmi_pci_suspend, | |
2231 | .resume = ipmi_pci_resume, | |
2232 | #endif | |
2233 | }; | |
2234 | #endif /* CONFIG_PCI */ | |
1da177e4 LT |
2235 | |
2236 | ||
dba9b4f6 CM |
2237 | #ifdef CONFIG_PPC_OF |
2238 | static int __devinit ipmi_of_probe(struct of_device *dev, | |
2239 | const struct of_device_id *match) | |
2240 | { | |
2241 | struct smi_info *info; | |
2242 | struct resource resource; | |
2243 | const int *regsize, *regspacing, *regshift; | |
2244 | struct device_node *np = dev->node; | |
2245 | int ret; | |
2246 | int proplen; | |
2247 | ||
2248 | dev_info(&dev->dev, PFX "probing via device tree\n"); | |
2249 | ||
2250 | ret = of_address_to_resource(np, 0, &resource); | |
2251 | if (ret) { | |
2252 | dev_warn(&dev->dev, PFX "invalid address from OF\n"); | |
2253 | return ret; | |
2254 | } | |
2255 | ||
9c25099d | 2256 | regsize = of_get_property(np, "reg-size", &proplen); |
dba9b4f6 CM |
2257 | if (regsize && proplen != 4) { |
2258 | dev_warn(&dev->dev, PFX "invalid regsize from OF\n"); | |
2259 | return -EINVAL; | |
2260 | } | |
2261 | ||
9c25099d | 2262 | regspacing = of_get_property(np, "reg-spacing", &proplen); |
dba9b4f6 CM |
2263 | if (regspacing && proplen != 4) { |
2264 | dev_warn(&dev->dev, PFX "invalid regspacing from OF\n"); | |
2265 | return -EINVAL; | |
2266 | } | |
2267 | ||
9c25099d | 2268 | regshift = of_get_property(np, "reg-shift", &proplen); |
dba9b4f6 CM |
2269 | if (regshift && proplen != 4) { |
2270 | dev_warn(&dev->dev, PFX "invalid regshift from OF\n"); | |
2271 | return -EINVAL; | |
2272 | } | |
2273 | ||
2274 | info = kzalloc(sizeof(*info), GFP_KERNEL); | |
2275 | ||
2276 | if (!info) { | |
2277 | dev_err(&dev->dev, | |
2278 | PFX "could not allocate memory for OF probe\n"); | |
2279 | return -ENOMEM; | |
2280 | } | |
2281 | ||
2282 | info->si_type = (enum si_type) match->data; | |
2283 | info->addr_source = "device-tree"; | |
2284 | info->io_setup = mem_setup; | |
2285 | info->irq_setup = std_irq_setup; | |
2286 | ||
2287 | info->io.addr_type = IPMI_MEM_ADDR_SPACE; | |
2288 | info->io.addr_data = resource.start; | |
2289 | ||
2290 | info->io.regsize = regsize ? *regsize : DEFAULT_REGSIZE; | |
2291 | info->io.regspacing = regspacing ? *regspacing : DEFAULT_REGSPACING; | |
2292 | info->io.regshift = regshift ? *regshift : 0; | |
2293 | ||
2294 | info->irq = irq_of_parse_and_map(dev->node, 0); | |
2295 | info->dev = &dev->dev; | |
2296 | ||
32d21985 | 2297 | dev_dbg(&dev->dev, "addr 0x%lx regsize %d spacing %d irq %x\n", |
dba9b4f6 CM |
2298 | info->io.addr_data, info->io.regsize, info->io.regspacing, |
2299 | info->irq); | |
2300 | ||
2301 | dev->dev.driver_data = (void*) info; | |
2302 | ||
2303 | return try_smi_init(info); | |
2304 | } | |
2305 | ||
2306 | static int __devexit ipmi_of_remove(struct of_device *dev) | |
2307 | { | |
2308 | cleanup_one_si(dev->dev.driver_data); | |
2309 | return 0; | |
2310 | } | |
2311 | ||
2312 | static struct of_device_id ipmi_match[] = | |
2313 | { | |
2314 | { .type = "ipmi", .compatible = "ipmi-kcs", .data = (void *)(unsigned long) SI_KCS }, | |
2315 | { .type = "ipmi", .compatible = "ipmi-smic", .data = (void *)(unsigned long) SI_SMIC }, | |
2316 | { .type = "ipmi", .compatible = "ipmi-bt", .data = (void *)(unsigned long) SI_BT }, | |
2317 | {}, | |
2318 | }; | |
2319 | ||
2320 | static struct of_platform_driver ipmi_of_platform_driver = | |
2321 | { | |
2322 | .name = "ipmi", | |
2323 | .match_table = ipmi_match, | |
2324 | .probe = ipmi_of_probe, | |
2325 | .remove = __devexit_p(ipmi_of_remove), | |
2326 | }; | |
2327 | #endif /* CONFIG_PPC_OF */ | |
2328 | ||
2329 | ||
1da177e4 LT |
2330 | static int try_get_dev_id(struct smi_info *smi_info) |
2331 | { | |
50c812b2 CM |
2332 | unsigned char msg[2]; |
2333 | unsigned char *resp; | |
2334 | unsigned long resp_len; | |
2335 | enum si_sm_result smi_result; | |
2336 | int rv = 0; | |
1da177e4 LT |
2337 | |
2338 | resp = kmalloc(IPMI_MAX_MSG_LENGTH, GFP_KERNEL); | |
b0defcdb | 2339 | if (!resp) |
1da177e4 LT |
2340 | return -ENOMEM; |
2341 | ||
2342 | /* Do a Get Device ID command, since it comes back with some | |
2343 | useful info. */ | |
2344 | msg[0] = IPMI_NETFN_APP_REQUEST << 2; | |
2345 | msg[1] = IPMI_GET_DEVICE_ID_CMD; | |
2346 | smi_info->handlers->start_transaction(smi_info->si_sm, msg, 2); | |
2347 | ||
2348 | smi_result = smi_info->handlers->event(smi_info->si_sm, 0); | |
2349 | for (;;) | |
2350 | { | |
c3e7e791 CM |
2351 | if (smi_result == SI_SM_CALL_WITH_DELAY || |
2352 | smi_result == SI_SM_CALL_WITH_TICK_DELAY) { | |
da4cd8df | 2353 | schedule_timeout_uninterruptible(1); |
1da177e4 LT |
2354 | smi_result = smi_info->handlers->event( |
2355 | smi_info->si_sm, 100); | |
2356 | } | |
2357 | else if (smi_result == SI_SM_CALL_WITHOUT_DELAY) | |
2358 | { | |
2359 | smi_result = smi_info->handlers->event( | |
2360 | smi_info->si_sm, 0); | |
2361 | } | |
2362 | else | |
2363 | break; | |
2364 | } | |
2365 | if (smi_result == SI_SM_HOSED) { | |
2366 | /* We couldn't get the state machine to run, so whatever's at | |
2367 | the port is probably not an IPMI SMI interface. */ | |
2368 | rv = -ENODEV; | |
2369 | goto out; | |
2370 | } | |
2371 | ||
2372 | /* Otherwise, we got some data. */ | |
2373 | resp_len = smi_info->handlers->get_result(smi_info->si_sm, | |
2374 | resp, IPMI_MAX_MSG_LENGTH); | |
50c812b2 | 2375 | if (resp_len < 14) { |
1da177e4 LT |
2376 | /* That's odd, it should be longer. */ |
2377 | rv = -EINVAL; | |
2378 | goto out; | |
2379 | } | |
2380 | ||
2381 | if ((resp[1] != IPMI_GET_DEVICE_ID_CMD) || (resp[2] != 0)) { | |
2382 | /* That's odd, it shouldn't be able to fail. */ | |
2383 | rv = -EINVAL; | |
2384 | goto out; | |
2385 | } | |
2386 | ||
2387 | /* Record info from the get device id, in case we need it. */ | |
50c812b2 | 2388 | ipmi_demangle_device_id(resp+3, resp_len-3, &smi_info->device_id); |
1da177e4 LT |
2389 | |
2390 | out: | |
2391 | kfree(resp); | |
2392 | return rv; | |
2393 | } | |
2394 | ||
2395 | static int type_file_read_proc(char *page, char **start, off_t off, | |
2396 | int count, int *eof, void *data) | |
2397 | { | |
1da177e4 LT |
2398 | struct smi_info *smi = data; |
2399 | ||
b361e27b | 2400 | return sprintf(page, "%s\n", si_to_str[smi->si_type]); |
1da177e4 LT |
2401 | } |
2402 | ||
2403 | static int stat_file_read_proc(char *page, char **start, off_t off, | |
2404 | int count, int *eof, void *data) | |
2405 | { | |
2406 | char *out = (char *) page; | |
2407 | struct smi_info *smi = data; | |
2408 | ||
2409 | out += sprintf(out, "interrupts_enabled: %d\n", | |
b0defcdb | 2410 | smi->irq && !smi->interrupt_disabled); |
1da177e4 LT |
2411 | out += sprintf(out, "short_timeouts: %ld\n", |
2412 | smi->short_timeouts); | |
2413 | out += sprintf(out, "long_timeouts: %ld\n", | |
2414 | smi->long_timeouts); | |
2415 | out += sprintf(out, "timeout_restarts: %ld\n", | |
2416 | smi->timeout_restarts); | |
2417 | out += sprintf(out, "idles: %ld\n", | |
2418 | smi->idles); | |
2419 | out += sprintf(out, "interrupts: %ld\n", | |
2420 | smi->interrupts); | |
2421 | out += sprintf(out, "attentions: %ld\n", | |
2422 | smi->attentions); | |
2423 | out += sprintf(out, "flag_fetches: %ld\n", | |
2424 | smi->flag_fetches); | |
2425 | out += sprintf(out, "hosed_count: %ld\n", | |
2426 | smi->hosed_count); | |
2427 | out += sprintf(out, "complete_transactions: %ld\n", | |
2428 | smi->complete_transactions); | |
2429 | out += sprintf(out, "events: %ld\n", | |
2430 | smi->events); | |
2431 | out += sprintf(out, "watchdog_pretimeouts: %ld\n", | |
2432 | smi->watchdog_pretimeouts); | |
2433 | out += sprintf(out, "incoming_messages: %ld\n", | |
2434 | smi->incoming_messages); | |
2435 | ||
b361e27b CM |
2436 | return out - page; |
2437 | } | |
2438 | ||
2439 | static int param_read_proc(char *page, char **start, off_t off, | |
2440 | int count, int *eof, void *data) | |
2441 | { | |
2442 | struct smi_info *smi = data; | |
2443 | ||
2444 | return sprintf(page, | |
2445 | "%s,%s,0x%lx,rsp=%d,rsi=%d,rsh=%d,irq=%d,ipmb=%d\n", | |
2446 | si_to_str[smi->si_type], | |
2447 | addr_space_to_str[smi->io.addr_type], | |
2448 | smi->io.addr_data, | |
2449 | smi->io.regspacing, | |
2450 | smi->io.regsize, | |
2451 | smi->io.regshift, | |
2452 | smi->irq, | |
2453 | smi->slave_addr); | |
1da177e4 LT |
2454 | } |
2455 | ||
3ae0e0f9 CM |
2456 | /* |
2457 | * oem_data_avail_to_receive_msg_avail | |
2458 | * @info - smi_info structure with msg_flags set | |
2459 | * | |
2460 | * Converts flags from OEM_DATA_AVAIL to RECEIVE_MSG_AVAIL | |
2461 | * Returns 1 indicating need to re-run handle_flags(). | |
2462 | */ | |
2463 | static int oem_data_avail_to_receive_msg_avail(struct smi_info *smi_info) | |
2464 | { | |
e8b33617 CM |
2465 | smi_info->msg_flags = ((smi_info->msg_flags & ~OEM_DATA_AVAIL) | |
2466 | RECEIVE_MSG_AVAIL); | |
3ae0e0f9 CM |
2467 | return 1; |
2468 | } | |
2469 | ||
2470 | /* | |
2471 | * setup_dell_poweredge_oem_data_handler | |
2472 | * @info - smi_info.device_id must be populated | |
2473 | * | |
2474 | * Systems that match, but have firmware version < 1.40 may assert | |
2475 | * OEM0_DATA_AVAIL on their own, without being told via Set Flags that | |
2476 | * it's safe to do so. Such systems will de-assert OEM1_DATA_AVAIL | |
2477 | * upon receipt of IPMI_GET_MSG_CMD, so we should treat these flags | |
2478 | * as RECEIVE_MSG_AVAIL instead. | |
2479 | * | |
2480 | * As Dell has no plans to release IPMI 1.5 firmware that *ever* | |
2481 | * assert the OEM[012] bits, and if it did, the driver would have to | |
2482 | * change to handle that properly, we don't actually check for the | |
2483 | * firmware version. | |
2484 | * Device ID = 0x20 BMC on PowerEdge 8G servers | |
2485 | * Device Revision = 0x80 | |
2486 | * Firmware Revision1 = 0x01 BMC version 1.40 | |
2487 | * Firmware Revision2 = 0x40 BCD encoded | |
2488 | * IPMI Version = 0x51 IPMI 1.5 | |
2489 | * Manufacturer ID = A2 02 00 Dell IANA | |
2490 | * | |
d5a2b89a CM |
2491 | * Additionally, PowerEdge systems with IPMI < 1.5 may also assert |
2492 | * OEM0_DATA_AVAIL and needs to be treated as RECEIVE_MSG_AVAIL. | |
2493 | * | |
3ae0e0f9 CM |
2494 | */ |
2495 | #define DELL_POWEREDGE_8G_BMC_DEVICE_ID 0x20 | |
2496 | #define DELL_POWEREDGE_8G_BMC_DEVICE_REV 0x80 | |
2497 | #define DELL_POWEREDGE_8G_BMC_IPMI_VERSION 0x51 | |
50c812b2 | 2498 | #define DELL_IANA_MFR_ID 0x0002a2 |
3ae0e0f9 CM |
2499 | static void setup_dell_poweredge_oem_data_handler(struct smi_info *smi_info) |
2500 | { | |
2501 | struct ipmi_device_id *id = &smi_info->device_id; | |
50c812b2 | 2502 | if (id->manufacturer_id == DELL_IANA_MFR_ID) { |
d5a2b89a CM |
2503 | if (id->device_id == DELL_POWEREDGE_8G_BMC_DEVICE_ID && |
2504 | id->device_revision == DELL_POWEREDGE_8G_BMC_DEVICE_REV && | |
50c812b2 | 2505 | id->ipmi_version == DELL_POWEREDGE_8G_BMC_IPMI_VERSION) { |
d5a2b89a CM |
2506 | smi_info->oem_data_avail_handler = |
2507 | oem_data_avail_to_receive_msg_avail; | |
2508 | } | |
2509 | else if (ipmi_version_major(id) < 1 || | |
2510 | (ipmi_version_major(id) == 1 && | |
2511 | ipmi_version_minor(id) < 5)) { | |
2512 | smi_info->oem_data_avail_handler = | |
2513 | oem_data_avail_to_receive_msg_avail; | |
2514 | } | |
3ae0e0f9 CM |
2515 | } |
2516 | } | |
2517 | ||
ea94027b CM |
2518 | #define CANNOT_RETURN_REQUESTED_LENGTH 0xCA |
2519 | static void return_hosed_msg_badsize(struct smi_info *smi_info) | |
2520 | { | |
2521 | struct ipmi_smi_msg *msg = smi_info->curr_msg; | |
2522 | ||
2523 | /* Make it a reponse */ | |
2524 | msg->rsp[0] = msg->data[0] | 4; | |
2525 | msg->rsp[1] = msg->data[1]; | |
2526 | msg->rsp[2] = CANNOT_RETURN_REQUESTED_LENGTH; | |
2527 | msg->rsp_size = 3; | |
2528 | smi_info->curr_msg = NULL; | |
2529 | deliver_recv_msg(smi_info, msg); | |
2530 | } | |
2531 | ||
2532 | /* | |
2533 | * dell_poweredge_bt_xaction_handler | |
2534 | * @info - smi_info.device_id must be populated | |
2535 | * | |
2536 | * Dell PowerEdge servers with the BT interface (x6xx and 1750) will | |
2537 | * not respond to a Get SDR command if the length of the data | |
2538 | * requested is exactly 0x3A, which leads to command timeouts and no | |
2539 | * data returned. This intercepts such commands, and causes userspace | |
2540 | * callers to try again with a different-sized buffer, which succeeds. | |
2541 | */ | |
2542 | ||
2543 | #define STORAGE_NETFN 0x0A | |
2544 | #define STORAGE_CMD_GET_SDR 0x23 | |
2545 | static int dell_poweredge_bt_xaction_handler(struct notifier_block *self, | |
2546 | unsigned long unused, | |
2547 | void *in) | |
2548 | { | |
2549 | struct smi_info *smi_info = in; | |
2550 | unsigned char *data = smi_info->curr_msg->data; | |
2551 | unsigned int size = smi_info->curr_msg->data_size; | |
2552 | if (size >= 8 && | |
2553 | (data[0]>>2) == STORAGE_NETFN && | |
2554 | data[1] == STORAGE_CMD_GET_SDR && | |
2555 | data[7] == 0x3A) { | |
2556 | return_hosed_msg_badsize(smi_info); | |
2557 | return NOTIFY_STOP; | |
2558 | } | |
2559 | return NOTIFY_DONE; | |
2560 | } | |
2561 | ||
2562 | static struct notifier_block dell_poweredge_bt_xaction_notifier = { | |
2563 | .notifier_call = dell_poweredge_bt_xaction_handler, | |
2564 | }; | |
2565 | ||
2566 | /* | |
2567 | * setup_dell_poweredge_bt_xaction_handler | |
2568 | * @info - smi_info.device_id must be filled in already | |
2569 | * | |
2570 | * Fills in smi_info.device_id.start_transaction_pre_hook | |
2571 | * when we know what function to use there. | |
2572 | */ | |
2573 | static void | |
2574 | setup_dell_poweredge_bt_xaction_handler(struct smi_info *smi_info) | |
2575 | { | |
2576 | struct ipmi_device_id *id = &smi_info->device_id; | |
50c812b2 | 2577 | if (id->manufacturer_id == DELL_IANA_MFR_ID && |
ea94027b CM |
2578 | smi_info->si_type == SI_BT) |
2579 | register_xaction_notifier(&dell_poweredge_bt_xaction_notifier); | |
2580 | } | |
2581 | ||
3ae0e0f9 CM |
2582 | /* |
2583 | * setup_oem_data_handler | |
2584 | * @info - smi_info.device_id must be filled in already | |
2585 | * | |
2586 | * Fills in smi_info.device_id.oem_data_available_handler | |
2587 | * when we know what function to use there. | |
2588 | */ | |
2589 | ||
2590 | static void setup_oem_data_handler(struct smi_info *smi_info) | |
2591 | { | |
2592 | setup_dell_poweredge_oem_data_handler(smi_info); | |
2593 | } | |
2594 | ||
ea94027b CM |
2595 | static void setup_xaction_handlers(struct smi_info *smi_info) |
2596 | { | |
2597 | setup_dell_poweredge_bt_xaction_handler(smi_info); | |
2598 | } | |
2599 | ||
a9a2c44f CM |
2600 | static inline void wait_for_timer_and_thread(struct smi_info *smi_info) |
2601 | { | |
453823ba CM |
2602 | if (smi_info->intf) { |
2603 | /* The timer and thread are only running if the | |
2604 | interface has been started up and registered. */ | |
2605 | if (smi_info->thread != NULL) | |
2606 | kthread_stop(smi_info->thread); | |
2607 | del_timer_sync(&smi_info->si_timer); | |
2608 | } | |
a9a2c44f CM |
2609 | } |
2610 | ||
7420884c | 2611 | static __devinitdata struct ipmi_default_vals |
b0defcdb CM |
2612 | { |
2613 | int type; | |
2614 | int port; | |
7420884c | 2615 | } ipmi_defaults[] = |
b0defcdb CM |
2616 | { |
2617 | { .type = SI_KCS, .port = 0xca2 }, | |
2618 | { .type = SI_SMIC, .port = 0xca9 }, | |
2619 | { .type = SI_BT, .port = 0xe4 }, | |
2620 | { .port = 0 } | |
2621 | }; | |
2622 | ||
2623 | static __devinit void default_find_bmc(void) | |
2624 | { | |
2625 | struct smi_info *info; | |
2626 | int i; | |
2627 | ||
2628 | for (i = 0; ; i++) { | |
2629 | if (!ipmi_defaults[i].port) | |
2630 | break; | |
2631 | ||
2632 | info = kzalloc(sizeof(*info), GFP_KERNEL); | |
2633 | if (!info) | |
2634 | return; | |
2635 | ||
4ff31d77 CK |
2636 | #ifdef CONFIG_PPC_MERGE |
2637 | if (check_legacy_ioport(ipmi_defaults[i].port)) | |
2638 | continue; | |
2639 | #endif | |
2640 | ||
b0defcdb CM |
2641 | info->addr_source = NULL; |
2642 | ||
2643 | info->si_type = ipmi_defaults[i].type; | |
2644 | info->io_setup = port_setup; | |
2645 | info->io.addr_data = ipmi_defaults[i].port; | |
2646 | info->io.addr_type = IPMI_IO_ADDR_SPACE; | |
2647 | ||
2648 | info->io.addr = NULL; | |
2649 | info->io.regspacing = DEFAULT_REGSPACING; | |
2650 | info->io.regsize = DEFAULT_REGSPACING; | |
2651 | info->io.regshift = 0; | |
2652 | ||
2653 | if (try_smi_init(info) == 0) { | |
2654 | /* Found one... */ | |
2655 | printk(KERN_INFO "ipmi_si: Found default %s state" | |
2656 | " machine at %s address 0x%lx\n", | |
2657 | si_to_str[info->si_type], | |
2658 | addr_space_to_str[info->io.addr_type], | |
2659 | info->io.addr_data); | |
2660 | return; | |
2661 | } | |
2662 | } | |
2663 | } | |
2664 | ||
2665 | static int is_new_interface(struct smi_info *info) | |
1da177e4 | 2666 | { |
b0defcdb | 2667 | struct smi_info *e; |
1da177e4 | 2668 | |
b0defcdb CM |
2669 | list_for_each_entry(e, &smi_infos, link) { |
2670 | if (e->io.addr_type != info->io.addr_type) | |
2671 | continue; | |
2672 | if (e->io.addr_data == info->io.addr_data) | |
2673 | return 0; | |
2674 | } | |
1da177e4 | 2675 | |
b0defcdb CM |
2676 | return 1; |
2677 | } | |
1da177e4 | 2678 | |
b0defcdb CM |
2679 | static int try_smi_init(struct smi_info *new_smi) |
2680 | { | |
2681 | int rv; | |
2682 | ||
2683 | if (new_smi->addr_source) { | |
2684 | printk(KERN_INFO "ipmi_si: Trying %s-specified %s state" | |
2685 | " machine at %s address 0x%lx, slave address 0x%x," | |
2686 | " irq %d\n", | |
2687 | new_smi->addr_source, | |
2688 | si_to_str[new_smi->si_type], | |
2689 | addr_space_to_str[new_smi->io.addr_type], | |
2690 | new_smi->io.addr_data, | |
2691 | new_smi->slave_addr, new_smi->irq); | |
2692 | } | |
2693 | ||
d6dfd131 | 2694 | mutex_lock(&smi_infos_lock); |
b0defcdb CM |
2695 | if (!is_new_interface(new_smi)) { |
2696 | printk(KERN_WARNING "ipmi_si: duplicate interface\n"); | |
2697 | rv = -EBUSY; | |
2698 | goto out_err; | |
2699 | } | |
1da177e4 LT |
2700 | |
2701 | /* So we know not to free it unless we have allocated one. */ | |
2702 | new_smi->intf = NULL; | |
2703 | new_smi->si_sm = NULL; | |
2704 | new_smi->handlers = NULL; | |
2705 | ||
b0defcdb CM |
2706 | switch (new_smi->si_type) { |
2707 | case SI_KCS: | |
1da177e4 | 2708 | new_smi->handlers = &kcs_smi_handlers; |
b0defcdb CM |
2709 | break; |
2710 | ||
2711 | case SI_SMIC: | |
1da177e4 | 2712 | new_smi->handlers = &smic_smi_handlers; |
b0defcdb CM |
2713 | break; |
2714 | ||
2715 | case SI_BT: | |
1da177e4 | 2716 | new_smi->handlers = &bt_smi_handlers; |
b0defcdb CM |
2717 | break; |
2718 | ||
2719 | default: | |
1da177e4 LT |
2720 | /* No support for anything else yet. */ |
2721 | rv = -EIO; | |
2722 | goto out_err; | |
2723 | } | |
2724 | ||
2725 | /* Allocate the state machine's data and initialize it. */ | |
2726 | new_smi->si_sm = kmalloc(new_smi->handlers->size(), GFP_KERNEL); | |
b0defcdb | 2727 | if (!new_smi->si_sm) { |
1da177e4 LT |
2728 | printk(" Could not allocate state machine memory\n"); |
2729 | rv = -ENOMEM; | |
2730 | goto out_err; | |
2731 | } | |
2732 | new_smi->io_size = new_smi->handlers->init_data(new_smi->si_sm, | |
2733 | &new_smi->io); | |
2734 | ||
2735 | /* Now that we know the I/O size, we can set up the I/O. */ | |
2736 | rv = new_smi->io_setup(new_smi); | |
2737 | if (rv) { | |
2738 | printk(" Could not set up I/O space\n"); | |
2739 | goto out_err; | |
2740 | } | |
2741 | ||
2742 | spin_lock_init(&(new_smi->si_lock)); | |
2743 | spin_lock_init(&(new_smi->msg_lock)); | |
2744 | spin_lock_init(&(new_smi->count_lock)); | |
2745 | ||
2746 | /* Do low-level detection first. */ | |
2747 | if (new_smi->handlers->detect(new_smi->si_sm)) { | |
b0defcdb CM |
2748 | if (new_smi->addr_source) |
2749 | printk(KERN_INFO "ipmi_si: Interface detection" | |
2750 | " failed\n"); | |
1da177e4 LT |
2751 | rv = -ENODEV; |
2752 | goto out_err; | |
2753 | } | |
2754 | ||
2755 | /* Attempt a get device id command. If it fails, we probably | |
b0defcdb | 2756 | don't have a BMC here. */ |
1da177e4 | 2757 | rv = try_get_dev_id(new_smi); |
b0defcdb CM |
2758 | if (rv) { |
2759 | if (new_smi->addr_source) | |
2760 | printk(KERN_INFO "ipmi_si: There appears to be no BMC" | |
2761 | " at this location\n"); | |
1da177e4 | 2762 | goto out_err; |
b0defcdb | 2763 | } |
1da177e4 | 2764 | |
3ae0e0f9 | 2765 | setup_oem_data_handler(new_smi); |
ea94027b | 2766 | setup_xaction_handlers(new_smi); |
3ae0e0f9 | 2767 | |
1da177e4 | 2768 | /* Try to claim any interrupts. */ |
b0defcdb CM |
2769 | if (new_smi->irq_setup) |
2770 | new_smi->irq_setup(new_smi); | |
1da177e4 LT |
2771 | |
2772 | INIT_LIST_HEAD(&(new_smi->xmit_msgs)); | |
2773 | INIT_LIST_HEAD(&(new_smi->hp_xmit_msgs)); | |
2774 | new_smi->curr_msg = NULL; | |
2775 | atomic_set(&new_smi->req_events, 0); | |
2776 | new_smi->run_to_completion = 0; | |
2777 | ||
2778 | new_smi->interrupt_disabled = 0; | |
a9a2c44f | 2779 | atomic_set(&new_smi->stop_operation, 0); |
b0defcdb CM |
2780 | new_smi->intf_num = smi_num; |
2781 | smi_num++; | |
1da177e4 LT |
2782 | |
2783 | /* Start clearing the flags before we enable interrupts or the | |
2784 | timer to avoid racing with the timer. */ | |
2785 | start_clear_flags(new_smi); | |
2786 | /* IRQ is defined to be set when non-zero. */ | |
2787 | if (new_smi->irq) | |
2788 | new_smi->si_state = SI_CLEARING_FLAGS_THEN_SET_IRQ; | |
2789 | ||
50c812b2 CM |
2790 | if (!new_smi->dev) { |
2791 | /* If we don't already have a device from something | |
2792 | * else (like PCI), then register a new one. */ | |
2793 | new_smi->pdev = platform_device_alloc("ipmi_si", | |
2794 | new_smi->intf_num); | |
2795 | if (rv) { | |
2796 | printk(KERN_ERR | |
2797 | "ipmi_si_intf:" | |
2798 | " Unable to allocate platform device\n"); | |
453823ba | 2799 | goto out_err; |
50c812b2 CM |
2800 | } |
2801 | new_smi->dev = &new_smi->pdev->dev; | |
2802 | new_smi->dev->driver = &ipmi_driver; | |
2803 | ||
b48f5457 | 2804 | rv = platform_device_add(new_smi->pdev); |
50c812b2 CM |
2805 | if (rv) { |
2806 | printk(KERN_ERR | |
2807 | "ipmi_si_intf:" | |
2808 | " Unable to register system interface device:" | |
2809 | " %d\n", | |
2810 | rv); | |
453823ba | 2811 | goto out_err; |
50c812b2 CM |
2812 | } |
2813 | new_smi->dev_registered = 1; | |
2814 | } | |
2815 | ||
1da177e4 LT |
2816 | rv = ipmi_register_smi(&handlers, |
2817 | new_smi, | |
50c812b2 CM |
2818 | &new_smi->device_id, |
2819 | new_smi->dev, | |
759643b8 | 2820 | "bmc", |
453823ba | 2821 | new_smi->slave_addr); |
1da177e4 LT |
2822 | if (rv) { |
2823 | printk(KERN_ERR | |
2824 | "ipmi_si: Unable to register device: error %d\n", | |
2825 | rv); | |
2826 | goto out_err_stop_timer; | |
2827 | } | |
2828 | ||
2829 | rv = ipmi_smi_add_proc_entry(new_smi->intf, "type", | |
2830 | type_file_read_proc, NULL, | |
2831 | new_smi, THIS_MODULE); | |
2832 | if (rv) { | |
2833 | printk(KERN_ERR | |
2834 | "ipmi_si: Unable to create proc entry: %d\n", | |
2835 | rv); | |
2836 | goto out_err_stop_timer; | |
2837 | } | |
2838 | ||
2839 | rv = ipmi_smi_add_proc_entry(new_smi->intf, "si_stats", | |
2840 | stat_file_read_proc, NULL, | |
2841 | new_smi, THIS_MODULE); | |
2842 | if (rv) { | |
2843 | printk(KERN_ERR | |
2844 | "ipmi_si: Unable to create proc entry: %d\n", | |
2845 | rv); | |
2846 | goto out_err_stop_timer; | |
2847 | } | |
2848 | ||
b361e27b CM |
2849 | rv = ipmi_smi_add_proc_entry(new_smi->intf, "params", |
2850 | param_read_proc, NULL, | |
2851 | new_smi, THIS_MODULE); | |
2852 | if (rv) { | |
2853 | printk(KERN_ERR | |
2854 | "ipmi_si: Unable to create proc entry: %d\n", | |
2855 | rv); | |
2856 | goto out_err_stop_timer; | |
2857 | } | |
2858 | ||
b0defcdb CM |
2859 | list_add_tail(&new_smi->link, &smi_infos); |
2860 | ||
d6dfd131 | 2861 | mutex_unlock(&smi_infos_lock); |
1da177e4 | 2862 | |
8f14137e | 2863 | printk(KERN_INFO "IPMI %s interface initialized\n",si_to_str[new_smi->si_type]); |
1da177e4 LT |
2864 | |
2865 | return 0; | |
2866 | ||
2867 | out_err_stop_timer: | |
a9a2c44f CM |
2868 | atomic_inc(&new_smi->stop_operation); |
2869 | wait_for_timer_and_thread(new_smi); | |
1da177e4 LT |
2870 | |
2871 | out_err: | |
2872 | if (new_smi->intf) | |
2873 | ipmi_unregister_smi(new_smi->intf); | |
2874 | ||
b0defcdb CM |
2875 | if (new_smi->irq_cleanup) |
2876 | new_smi->irq_cleanup(new_smi); | |
1da177e4 LT |
2877 | |
2878 | /* Wait until we know that we are out of any interrupt | |
2879 | handlers might have been running before we freed the | |
2880 | interrupt. */ | |
fbd568a3 | 2881 | synchronize_sched(); |
1da177e4 LT |
2882 | |
2883 | if (new_smi->si_sm) { | |
2884 | if (new_smi->handlers) | |
2885 | new_smi->handlers->cleanup(new_smi->si_sm); | |
2886 | kfree(new_smi->si_sm); | |
2887 | } | |
b0defcdb CM |
2888 | if (new_smi->addr_source_cleanup) |
2889 | new_smi->addr_source_cleanup(new_smi); | |
7767e126 PG |
2890 | if (new_smi->io_cleanup) |
2891 | new_smi->io_cleanup(new_smi); | |
1da177e4 | 2892 | |
50c812b2 CM |
2893 | if (new_smi->dev_registered) |
2894 | platform_device_unregister(new_smi->pdev); | |
2895 | ||
2896 | kfree(new_smi); | |
2897 | ||
d6dfd131 | 2898 | mutex_unlock(&smi_infos_lock); |
b0defcdb | 2899 | |
1da177e4 LT |
2900 | return rv; |
2901 | } | |
2902 | ||
b0defcdb | 2903 | static __devinit int init_ipmi_si(void) |
1da177e4 | 2904 | { |
1da177e4 LT |
2905 | int i; |
2906 | char *str; | |
50c812b2 | 2907 | int rv; |
1da177e4 LT |
2908 | |
2909 | if (initialized) | |
2910 | return 0; | |
2911 | initialized = 1; | |
2912 | ||
50c812b2 CM |
2913 | /* Register the device drivers. */ |
2914 | rv = driver_register(&ipmi_driver); | |
2915 | if (rv) { | |
2916 | printk(KERN_ERR | |
2917 | "init_ipmi_si: Unable to register driver: %d\n", | |
2918 | rv); | |
2919 | return rv; | |
2920 | } | |
2921 | ||
2922 | ||
1da177e4 LT |
2923 | /* Parse out the si_type string into its components. */ |
2924 | str = si_type_str; | |
2925 | if (*str != '\0') { | |
e8b33617 | 2926 | for (i = 0; (i < SI_MAX_PARMS) && (*str != '\0'); i++) { |
1da177e4 LT |
2927 | si_type[i] = str; |
2928 | str = strchr(str, ','); | |
2929 | if (str) { | |
2930 | *str = '\0'; | |
2931 | str++; | |
2932 | } else { | |
2933 | break; | |
2934 | } | |
2935 | } | |
2936 | } | |
2937 | ||
1fdd75bd | 2938 | printk(KERN_INFO "IPMI System Interface driver.\n"); |
1da177e4 | 2939 | |
b0defcdb CM |
2940 | hardcode_find_bmc(); |
2941 | ||
a9fad4cc | 2942 | #ifdef CONFIG_DMI |
b224cd3a | 2943 | dmi_find_bmc(); |
1da177e4 LT |
2944 | #endif |
2945 | ||
b0defcdb | 2946 | #ifdef CONFIG_ACPI |
1d5636cc | 2947 | acpi_find_bmc(); |
b0defcdb | 2948 | #endif |
1da177e4 | 2949 | |
b0defcdb | 2950 | #ifdef CONFIG_PCI |
168b35a7 CM |
2951 | rv = pci_register_driver(&ipmi_pci_driver); |
2952 | if (rv){ | |
2953 | printk(KERN_ERR | |
2954 | "init_ipmi_si: Unable to register PCI driver: %d\n", | |
2955 | rv); | |
2956 | } | |
b0defcdb CM |
2957 | #endif |
2958 | ||
dba9b4f6 CM |
2959 | #ifdef CONFIG_PPC_OF |
2960 | of_register_platform_driver(&ipmi_of_platform_driver); | |
2961 | #endif | |
2962 | ||
b0defcdb | 2963 | if (si_trydefaults) { |
d6dfd131 | 2964 | mutex_lock(&smi_infos_lock); |
b0defcdb CM |
2965 | if (list_empty(&smi_infos)) { |
2966 | /* No BMC was found, try defaults. */ | |
d6dfd131 | 2967 | mutex_unlock(&smi_infos_lock); |
b0defcdb CM |
2968 | default_find_bmc(); |
2969 | } else { | |
d6dfd131 | 2970 | mutex_unlock(&smi_infos_lock); |
b0defcdb | 2971 | } |
1da177e4 LT |
2972 | } |
2973 | ||
d6dfd131 | 2974 | mutex_lock(&smi_infos_lock); |
b361e27b | 2975 | if (unload_when_empty && list_empty(&smi_infos)) { |
d6dfd131 | 2976 | mutex_unlock(&smi_infos_lock); |
b0defcdb CM |
2977 | #ifdef CONFIG_PCI |
2978 | pci_unregister_driver(&ipmi_pci_driver); | |
2979 | #endif | |
10fb62e5 CK |
2980 | |
2981 | #ifdef CONFIG_PPC_OF | |
2982 | of_unregister_platform_driver(&ipmi_of_platform_driver); | |
2983 | #endif | |
55ebcc38 | 2984 | driver_unregister(&ipmi_driver); |
1da177e4 LT |
2985 | printk("ipmi_si: Unable to find any System Interface(s)\n"); |
2986 | return -ENODEV; | |
b0defcdb | 2987 | } else { |
d6dfd131 | 2988 | mutex_unlock(&smi_infos_lock); |
b0defcdb | 2989 | return 0; |
1da177e4 | 2990 | } |
1da177e4 LT |
2991 | } |
2992 | module_init(init_ipmi_si); | |
2993 | ||
b361e27b | 2994 | static void cleanup_one_si(struct smi_info *to_clean) |
1da177e4 LT |
2995 | { |
2996 | int rv; | |
2997 | unsigned long flags; | |
2998 | ||
b0defcdb | 2999 | if (!to_clean) |
1da177e4 LT |
3000 | return; |
3001 | ||
b0defcdb CM |
3002 | list_del(&to_clean->link); |
3003 | ||
ee6cd5f8 | 3004 | /* Tell the driver that we are shutting down. */ |
a9a2c44f | 3005 | atomic_inc(&to_clean->stop_operation); |
b0defcdb | 3006 | |
ee6cd5f8 CM |
3007 | /* Make sure the timer and thread are stopped and will not run |
3008 | again. */ | |
a9a2c44f | 3009 | wait_for_timer_and_thread(to_clean); |
1da177e4 | 3010 | |
ee6cd5f8 CM |
3011 | /* Timeouts are stopped, now make sure the interrupts are off |
3012 | for the device. A little tricky with locks to make sure | |
3013 | there are no races. */ | |
3014 | spin_lock_irqsave(&to_clean->si_lock, flags); | |
3015 | while (to_clean->curr_msg || (to_clean->si_state != SI_NORMAL)) { | |
3016 | spin_unlock_irqrestore(&to_clean->si_lock, flags); | |
3017 | poll(to_clean); | |
3018 | schedule_timeout_uninterruptible(1); | |
3019 | spin_lock_irqsave(&to_clean->si_lock, flags); | |
3020 | } | |
3021 | disable_si_irq(to_clean); | |
3022 | spin_unlock_irqrestore(&to_clean->si_lock, flags); | |
3023 | while (to_clean->curr_msg || (to_clean->si_state != SI_NORMAL)) { | |
3024 | poll(to_clean); | |
3025 | schedule_timeout_uninterruptible(1); | |
3026 | } | |
3027 | ||
3028 | /* Clean up interrupts and make sure that everything is done. */ | |
3029 | if (to_clean->irq_cleanup) | |
3030 | to_clean->irq_cleanup(to_clean); | |
e8b33617 | 3031 | while (to_clean->curr_msg || (to_clean->si_state != SI_NORMAL)) { |
1da177e4 | 3032 | poll(to_clean); |
da4cd8df | 3033 | schedule_timeout_uninterruptible(1); |
1da177e4 LT |
3034 | } |
3035 | ||
3036 | rv = ipmi_unregister_smi(to_clean->intf); | |
3037 | if (rv) { | |
3038 | printk(KERN_ERR | |
3039 | "ipmi_si: Unable to unregister device: errno=%d\n", | |
3040 | rv); | |
3041 | } | |
3042 | ||
3043 | to_clean->handlers->cleanup(to_clean->si_sm); | |
3044 | ||
3045 | kfree(to_clean->si_sm); | |
3046 | ||
b0defcdb CM |
3047 | if (to_clean->addr_source_cleanup) |
3048 | to_clean->addr_source_cleanup(to_clean); | |
7767e126 PG |
3049 | if (to_clean->io_cleanup) |
3050 | to_clean->io_cleanup(to_clean); | |
50c812b2 CM |
3051 | |
3052 | if (to_clean->dev_registered) | |
3053 | platform_device_unregister(to_clean->pdev); | |
3054 | ||
3055 | kfree(to_clean); | |
1da177e4 LT |
3056 | } |
3057 | ||
3058 | static __exit void cleanup_ipmi_si(void) | |
3059 | { | |
b0defcdb | 3060 | struct smi_info *e, *tmp_e; |
1da177e4 | 3061 | |
b0defcdb | 3062 | if (!initialized) |
1da177e4 LT |
3063 | return; |
3064 | ||
b0defcdb CM |
3065 | #ifdef CONFIG_PCI |
3066 | pci_unregister_driver(&ipmi_pci_driver); | |
3067 | #endif | |
3068 | ||
dba9b4f6 CM |
3069 | #ifdef CONFIG_PPC_OF |
3070 | of_unregister_platform_driver(&ipmi_of_platform_driver); | |
3071 | #endif | |
3072 | ||
d6dfd131 | 3073 | mutex_lock(&smi_infos_lock); |
b0defcdb CM |
3074 | list_for_each_entry_safe(e, tmp_e, &smi_infos, link) |
3075 | cleanup_one_si(e); | |
d6dfd131 | 3076 | mutex_unlock(&smi_infos_lock); |
50c812b2 CM |
3077 | |
3078 | driver_unregister(&ipmi_driver); | |
1da177e4 LT |
3079 | } |
3080 | module_exit(cleanup_ipmi_si); | |
3081 | ||
3082 | MODULE_LICENSE("GPL"); | |
1fdd75bd CM |
3083 | MODULE_AUTHOR("Corey Minyard <minyard@mvista.com>"); |
3084 | MODULE_DESCRIPTION("Interface to the IPMI driver for the KCS, SMIC, and BT system interfaces."); |