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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> | |
16f4232c | 60 | #include <linux/ipmi.h> |
1da177e4 LT |
61 | #include <linux/ipmi_smi.h> |
62 | #include <asm/io.h> | |
63 | #include "ipmi_si_sm.h" | |
64 | #include <linux/init.h> | |
b224cd3a | 65 | #include <linux/dmi.h> |
b361e27b CM |
66 | #include <linux/string.h> |
67 | #include <linux/ctype.h> | |
9e368fa0 | 68 | #include <linux/pnp.h> |
b361e27b | 69 | |
dba9b4f6 | 70 | #ifdef CONFIG_PPC_OF |
11c675ce SR |
71 | #include <linux/of_device.h> |
72 | #include <linux/of_platform.h> | |
672d8eaf RH |
73 | #include <linux/of_address.h> |
74 | #include <linux/of_irq.h> | |
dba9b4f6 CM |
75 | #endif |
76 | ||
b361e27b | 77 | #define PFX "ipmi_si: " |
1da177e4 LT |
78 | |
79 | /* Measure times between events in the driver. */ | |
80 | #undef DEBUG_TIMING | |
81 | ||
82 | /* Call every 10 ms. */ | |
83 | #define SI_TIMEOUT_TIME_USEC 10000 | |
84 | #define SI_USEC_PER_JIFFY (1000000/HZ) | |
85 | #define SI_TIMEOUT_JIFFIES (SI_TIMEOUT_TIME_USEC/SI_USEC_PER_JIFFY) | |
86 | #define SI_SHORT_TIMEOUT_USEC 250 /* .25ms when the SM request a | |
c305e3d3 | 87 | short timeout */ |
1da177e4 LT |
88 | |
89 | enum si_intf_state { | |
90 | SI_NORMAL, | |
91 | SI_GETTING_FLAGS, | |
92 | SI_GETTING_EVENTS, | |
93 | SI_CLEARING_FLAGS, | |
94 | SI_CLEARING_FLAGS_THEN_SET_IRQ, | |
95 | SI_GETTING_MESSAGES, | |
96 | SI_ENABLE_INTERRUPTS1, | |
ee6cd5f8 CM |
97 | SI_ENABLE_INTERRUPTS2, |
98 | SI_DISABLE_INTERRUPTS1, | |
99 | SI_DISABLE_INTERRUPTS2 | |
1da177e4 LT |
100 | /* FIXME - add watchdog stuff. */ |
101 | }; | |
102 | ||
9dbf68f9 CM |
103 | /* Some BT-specific defines we need here. */ |
104 | #define IPMI_BT_INTMASK_REG 2 | |
105 | #define IPMI_BT_INTMASK_CLEAR_IRQ_BIT 2 | |
106 | #define IPMI_BT_INTMASK_ENABLE_IRQ_BIT 1 | |
107 | ||
1da177e4 LT |
108 | enum si_type { |
109 | SI_KCS, SI_SMIC, SI_BT | |
110 | }; | |
b361e27b | 111 | static char *si_to_str[] = { "kcs", "smic", "bt" }; |
1da177e4 | 112 | |
5fedc4a2 MG |
113 | static char *ipmi_addr_src_to_str[] = { NULL, "hotmod", "hardcoded", "SPMI", |
114 | "ACPI", "SMBIOS", "PCI", | |
115 | "device-tree", "default" }; | |
116 | ||
50c812b2 CM |
117 | #define DEVICE_NAME "ipmi_si" |
118 | ||
fe2d5ffc DW |
119 | static struct platform_driver ipmi_driver = { |
120 | .driver = { | |
121 | .name = DEVICE_NAME, | |
122 | .bus = &platform_bus_type | |
123 | } | |
50c812b2 | 124 | }; |
3ae0e0f9 | 125 | |
64959e2d CM |
126 | |
127 | /* | |
128 | * Indexes into stats[] in smi_info below. | |
129 | */ | |
ba8ff1c6 CM |
130 | enum si_stat_indexes { |
131 | /* | |
132 | * Number of times the driver requested a timer while an operation | |
133 | * was in progress. | |
134 | */ | |
135 | SI_STAT_short_timeouts = 0, | |
136 | ||
137 | /* | |
138 | * Number of times the driver requested a timer while nothing was in | |
139 | * progress. | |
140 | */ | |
141 | SI_STAT_long_timeouts, | |
142 | ||
143 | /* Number of times the interface was idle while being polled. */ | |
144 | SI_STAT_idles, | |
145 | ||
146 | /* Number of interrupts the driver handled. */ | |
147 | SI_STAT_interrupts, | |
148 | ||
149 | /* Number of time the driver got an ATTN from the hardware. */ | |
150 | SI_STAT_attentions, | |
64959e2d | 151 | |
ba8ff1c6 CM |
152 | /* Number of times the driver requested flags from the hardware. */ |
153 | SI_STAT_flag_fetches, | |
154 | ||
155 | /* Number of times the hardware didn't follow the state machine. */ | |
156 | SI_STAT_hosed_count, | |
157 | ||
158 | /* Number of completed messages. */ | |
159 | SI_STAT_complete_transactions, | |
160 | ||
161 | /* Number of IPMI events received from the hardware. */ | |
162 | SI_STAT_events, | |
163 | ||
164 | /* Number of watchdog pretimeouts. */ | |
165 | SI_STAT_watchdog_pretimeouts, | |
166 | ||
167 | /* Number of asyncronous messages received. */ | |
168 | SI_STAT_incoming_messages, | |
169 | ||
170 | ||
171 | /* This *must* remain last, add new values above this. */ | |
172 | SI_NUM_STATS | |
173 | }; | |
64959e2d | 174 | |
c305e3d3 | 175 | struct smi_info { |
a9a2c44f | 176 | int intf_num; |
1da177e4 LT |
177 | ipmi_smi_t intf; |
178 | struct si_sm_data *si_sm; | |
179 | struct si_sm_handlers *handlers; | |
180 | enum si_type si_type; | |
181 | spinlock_t si_lock; | |
182 | spinlock_t msg_lock; | |
183 | struct list_head xmit_msgs; | |
184 | struct list_head hp_xmit_msgs; | |
185 | struct ipmi_smi_msg *curr_msg; | |
186 | enum si_intf_state si_state; | |
187 | ||
c305e3d3 CM |
188 | /* |
189 | * Used to handle the various types of I/O that can occur with | |
190 | * IPMI | |
191 | */ | |
1da177e4 LT |
192 | struct si_sm_io io; |
193 | int (*io_setup)(struct smi_info *info); | |
194 | void (*io_cleanup)(struct smi_info *info); | |
195 | int (*irq_setup)(struct smi_info *info); | |
196 | void (*irq_cleanup)(struct smi_info *info); | |
197 | unsigned int io_size; | |
5fedc4a2 | 198 | enum ipmi_addr_src addr_source; /* ACPI, PCI, SMBIOS, hardcode, etc. */ |
b0defcdb CM |
199 | void (*addr_source_cleanup)(struct smi_info *info); |
200 | void *addr_source_data; | |
1da177e4 | 201 | |
c305e3d3 CM |
202 | /* |
203 | * Per-OEM handler, called from handle_flags(). Returns 1 | |
204 | * when handle_flags() needs to be re-run or 0 indicating it | |
205 | * set si_state itself. | |
206 | */ | |
3ae0e0f9 CM |
207 | int (*oem_data_avail_handler)(struct smi_info *smi_info); |
208 | ||
c305e3d3 CM |
209 | /* |
210 | * Flags from the last GET_MSG_FLAGS command, used when an ATTN | |
211 | * is set to hold the flags until we are done handling everything | |
212 | * from the flags. | |
213 | */ | |
1da177e4 LT |
214 | #define RECEIVE_MSG_AVAIL 0x01 |
215 | #define EVENT_MSG_BUFFER_FULL 0x02 | |
216 | #define WDT_PRE_TIMEOUT_INT 0x08 | |
3ae0e0f9 CM |
217 | #define OEM0_DATA_AVAIL 0x20 |
218 | #define OEM1_DATA_AVAIL 0x40 | |
219 | #define OEM2_DATA_AVAIL 0x80 | |
220 | #define OEM_DATA_AVAIL (OEM0_DATA_AVAIL | \ | |
c305e3d3 CM |
221 | OEM1_DATA_AVAIL | \ |
222 | OEM2_DATA_AVAIL) | |
1da177e4 LT |
223 | unsigned char msg_flags; |
224 | ||
40112ae7 CM |
225 | /* Does the BMC have an event buffer? */ |
226 | char has_event_buffer; | |
227 | ||
c305e3d3 CM |
228 | /* |
229 | * If set to true, this will request events the next time the | |
230 | * state machine is idle. | |
231 | */ | |
1da177e4 LT |
232 | atomic_t req_events; |
233 | ||
c305e3d3 CM |
234 | /* |
235 | * If true, run the state machine to completion on every send | |
236 | * call. Generally used after a panic to make sure stuff goes | |
237 | * out. | |
238 | */ | |
1da177e4 LT |
239 | int run_to_completion; |
240 | ||
241 | /* The I/O port of an SI interface. */ | |
242 | int port; | |
243 | ||
c305e3d3 CM |
244 | /* |
245 | * The space between start addresses of the two ports. For | |
246 | * instance, if the first port is 0xca2 and the spacing is 4, then | |
247 | * the second port is 0xca6. | |
248 | */ | |
1da177e4 LT |
249 | unsigned int spacing; |
250 | ||
251 | /* zero if no irq; */ | |
252 | int irq; | |
253 | ||
254 | /* The timer for this si. */ | |
255 | struct timer_list si_timer; | |
256 | ||
257 | /* The time (in jiffies) the last timeout occurred at. */ | |
258 | unsigned long last_timeout_jiffies; | |
259 | ||
260 | /* Used to gracefully stop the timer without race conditions. */ | |
a9a2c44f | 261 | atomic_t stop_operation; |
1da177e4 | 262 | |
c305e3d3 CM |
263 | /* |
264 | * The driver will disable interrupts when it gets into a | |
265 | * situation where it cannot handle messages due to lack of | |
266 | * memory. Once that situation clears up, it will re-enable | |
267 | * interrupts. | |
268 | */ | |
1da177e4 LT |
269 | int interrupt_disabled; |
270 | ||
50c812b2 | 271 | /* From the get device id response... */ |
3ae0e0f9 | 272 | struct ipmi_device_id device_id; |
1da177e4 | 273 | |
50c812b2 CM |
274 | /* Driver model stuff. */ |
275 | struct device *dev; | |
276 | struct platform_device *pdev; | |
277 | ||
c305e3d3 CM |
278 | /* |
279 | * True if we allocated the device, false if it came from | |
280 | * someplace else (like PCI). | |
281 | */ | |
50c812b2 CM |
282 | int dev_registered; |
283 | ||
1da177e4 LT |
284 | /* Slave address, could be reported from DMI. */ |
285 | unsigned char slave_addr; | |
286 | ||
287 | /* Counters and things for the proc filesystem. */ | |
64959e2d | 288 | atomic_t stats[SI_NUM_STATS]; |
a9a2c44f | 289 | |
c305e3d3 | 290 | struct task_struct *thread; |
b0defcdb CM |
291 | |
292 | struct list_head link; | |
16f4232c | 293 | union ipmi_smi_info_union addr_info; |
1da177e4 LT |
294 | }; |
295 | ||
64959e2d CM |
296 | #define smi_inc_stat(smi, stat) \ |
297 | atomic_inc(&(smi)->stats[SI_STAT_ ## stat]) | |
298 | #define smi_get_stat(smi, stat) \ | |
299 | ((unsigned int) atomic_read(&(smi)->stats[SI_STAT_ ## stat])) | |
300 | ||
a51f4a81 CM |
301 | #define SI_MAX_PARMS 4 |
302 | ||
303 | static int force_kipmid[SI_MAX_PARMS]; | |
304 | static int num_force_kipmid; | |
56480287 MG |
305 | #ifdef CONFIG_PCI |
306 | static int pci_registered; | |
307 | #endif | |
561f8182 YL |
308 | #ifdef CONFIG_ACPI |
309 | static int pnp_registered; | |
310 | #endif | |
56480287 MG |
311 | #ifdef CONFIG_PPC_OF |
312 | static int of_registered; | |
313 | #endif | |
a51f4a81 | 314 | |
ae74e823 MW |
315 | static unsigned int kipmid_max_busy_us[SI_MAX_PARMS]; |
316 | static int num_max_busy_us; | |
317 | ||
b361e27b CM |
318 | static int unload_when_empty = 1; |
319 | ||
2407d77a | 320 | static int add_smi(struct smi_info *smi); |
b0defcdb | 321 | static int try_smi_init(struct smi_info *smi); |
b361e27b | 322 | static void cleanup_one_si(struct smi_info *to_clean); |
d2478521 | 323 | static void cleanup_ipmi_si(void); |
b0defcdb | 324 | |
e041c683 | 325 | static ATOMIC_NOTIFIER_HEAD(xaction_notifier_list); |
c305e3d3 | 326 | static int register_xaction_notifier(struct notifier_block *nb) |
ea94027b | 327 | { |
e041c683 | 328 | return atomic_notifier_chain_register(&xaction_notifier_list, nb); |
ea94027b CM |
329 | } |
330 | ||
1da177e4 LT |
331 | static void deliver_recv_msg(struct smi_info *smi_info, |
332 | struct ipmi_smi_msg *msg) | |
333 | { | |
334 | /* Deliver the message to the upper layer with the lock | |
c305e3d3 | 335 | released. */ |
a747c5ab JK |
336 | |
337 | if (smi_info->run_to_completion) { | |
338 | ipmi_smi_msg_received(smi_info->intf, msg); | |
339 | } else { | |
340 | spin_unlock(&(smi_info->si_lock)); | |
341 | ipmi_smi_msg_received(smi_info->intf, msg); | |
342 | spin_lock(&(smi_info->si_lock)); | |
343 | } | |
1da177e4 LT |
344 | } |
345 | ||
4d7cbac7 | 346 | static void return_hosed_msg(struct smi_info *smi_info, int cCode) |
1da177e4 LT |
347 | { |
348 | struct ipmi_smi_msg *msg = smi_info->curr_msg; | |
349 | ||
4d7cbac7 CM |
350 | if (cCode < 0 || cCode > IPMI_ERR_UNSPECIFIED) |
351 | cCode = IPMI_ERR_UNSPECIFIED; | |
352 | /* else use it as is */ | |
353 | ||
1da177e4 LT |
354 | /* Make it a reponse */ |
355 | msg->rsp[0] = msg->data[0] | 4; | |
356 | msg->rsp[1] = msg->data[1]; | |
4d7cbac7 | 357 | msg->rsp[2] = cCode; |
1da177e4 LT |
358 | msg->rsp_size = 3; |
359 | ||
360 | smi_info->curr_msg = NULL; | |
361 | deliver_recv_msg(smi_info, msg); | |
362 | } | |
363 | ||
364 | static enum si_sm_result start_next_msg(struct smi_info *smi_info) | |
365 | { | |
366 | int rv; | |
367 | struct list_head *entry = NULL; | |
368 | #ifdef DEBUG_TIMING | |
369 | struct timeval t; | |
370 | #endif | |
371 | ||
c305e3d3 CM |
372 | /* |
373 | * No need to save flags, we aleady have interrupts off and we | |
374 | * already hold the SMI lock. | |
375 | */ | |
5956dce1 KB |
376 | if (!smi_info->run_to_completion) |
377 | spin_lock(&(smi_info->msg_lock)); | |
1da177e4 LT |
378 | |
379 | /* Pick the high priority queue first. */ | |
b0defcdb | 380 | if (!list_empty(&(smi_info->hp_xmit_msgs))) { |
1da177e4 | 381 | entry = smi_info->hp_xmit_msgs.next; |
b0defcdb | 382 | } else if (!list_empty(&(smi_info->xmit_msgs))) { |
1da177e4 LT |
383 | entry = smi_info->xmit_msgs.next; |
384 | } | |
385 | ||
b0defcdb | 386 | if (!entry) { |
1da177e4 LT |
387 | smi_info->curr_msg = NULL; |
388 | rv = SI_SM_IDLE; | |
389 | } else { | |
390 | int err; | |
391 | ||
392 | list_del(entry); | |
393 | smi_info->curr_msg = list_entry(entry, | |
394 | struct ipmi_smi_msg, | |
395 | link); | |
396 | #ifdef DEBUG_TIMING | |
397 | do_gettimeofday(&t); | |
c305e3d3 | 398 | printk(KERN_DEBUG "**Start2: %d.%9.9d\n", t.tv_sec, t.tv_usec); |
1da177e4 | 399 | #endif |
e041c683 AS |
400 | err = atomic_notifier_call_chain(&xaction_notifier_list, |
401 | 0, smi_info); | |
ea94027b CM |
402 | if (err & NOTIFY_STOP_MASK) { |
403 | rv = SI_SM_CALL_WITHOUT_DELAY; | |
404 | goto out; | |
405 | } | |
1da177e4 LT |
406 | err = smi_info->handlers->start_transaction( |
407 | smi_info->si_sm, | |
408 | smi_info->curr_msg->data, | |
409 | smi_info->curr_msg->data_size); | |
c305e3d3 | 410 | if (err) |
4d7cbac7 | 411 | return_hosed_msg(smi_info, err); |
1da177e4 LT |
412 | |
413 | rv = SI_SM_CALL_WITHOUT_DELAY; | |
414 | } | |
c305e3d3 | 415 | out: |
5956dce1 KB |
416 | if (!smi_info->run_to_completion) |
417 | spin_unlock(&(smi_info->msg_lock)); | |
1da177e4 LT |
418 | |
419 | return rv; | |
420 | } | |
421 | ||
422 | static void start_enable_irq(struct smi_info *smi_info) | |
423 | { | |
424 | unsigned char msg[2]; | |
425 | ||
c305e3d3 CM |
426 | /* |
427 | * If we are enabling interrupts, we have to tell the | |
428 | * BMC to use them. | |
429 | */ | |
1da177e4 LT |
430 | msg[0] = (IPMI_NETFN_APP_REQUEST << 2); |
431 | msg[1] = IPMI_GET_BMC_GLOBAL_ENABLES_CMD; | |
432 | ||
433 | smi_info->handlers->start_transaction(smi_info->si_sm, msg, 2); | |
434 | smi_info->si_state = SI_ENABLE_INTERRUPTS1; | |
435 | } | |
436 | ||
ee6cd5f8 CM |
437 | static void start_disable_irq(struct smi_info *smi_info) |
438 | { | |
439 | unsigned char msg[2]; | |
440 | ||
441 | msg[0] = (IPMI_NETFN_APP_REQUEST << 2); | |
442 | msg[1] = IPMI_GET_BMC_GLOBAL_ENABLES_CMD; | |
443 | ||
444 | smi_info->handlers->start_transaction(smi_info->si_sm, msg, 2); | |
445 | smi_info->si_state = SI_DISABLE_INTERRUPTS1; | |
446 | } | |
447 | ||
1da177e4 LT |
448 | static void start_clear_flags(struct smi_info *smi_info) |
449 | { | |
450 | unsigned char msg[3]; | |
451 | ||
452 | /* Make sure the watchdog pre-timeout flag is not set at startup. */ | |
453 | msg[0] = (IPMI_NETFN_APP_REQUEST << 2); | |
454 | msg[1] = IPMI_CLEAR_MSG_FLAGS_CMD; | |
455 | msg[2] = WDT_PRE_TIMEOUT_INT; | |
456 | ||
457 | smi_info->handlers->start_transaction(smi_info->si_sm, msg, 3); | |
458 | smi_info->si_state = SI_CLEARING_FLAGS; | |
459 | } | |
460 | ||
c305e3d3 CM |
461 | /* |
462 | * When we have a situtaion where we run out of memory and cannot | |
463 | * allocate messages, we just leave them in the BMC and run the system | |
464 | * polled until we can allocate some memory. Once we have some | |
465 | * memory, we will re-enable the interrupt. | |
466 | */ | |
1da177e4 LT |
467 | static inline void disable_si_irq(struct smi_info *smi_info) |
468 | { | |
b0defcdb | 469 | if ((smi_info->irq) && (!smi_info->interrupt_disabled)) { |
ee6cd5f8 | 470 | start_disable_irq(smi_info); |
1da177e4 | 471 | smi_info->interrupt_disabled = 1; |
ea4078ca MG |
472 | if (!atomic_read(&smi_info->stop_operation)) |
473 | mod_timer(&smi_info->si_timer, | |
474 | jiffies + SI_TIMEOUT_JIFFIES); | |
1da177e4 LT |
475 | } |
476 | } | |
477 | ||
478 | static inline void enable_si_irq(struct smi_info *smi_info) | |
479 | { | |
480 | if ((smi_info->irq) && (smi_info->interrupt_disabled)) { | |
ee6cd5f8 | 481 | start_enable_irq(smi_info); |
1da177e4 LT |
482 | smi_info->interrupt_disabled = 0; |
483 | } | |
484 | } | |
485 | ||
486 | static void handle_flags(struct smi_info *smi_info) | |
487 | { | |
3ae0e0f9 | 488 | retry: |
1da177e4 LT |
489 | if (smi_info->msg_flags & WDT_PRE_TIMEOUT_INT) { |
490 | /* Watchdog pre-timeout */ | |
64959e2d | 491 | smi_inc_stat(smi_info, watchdog_pretimeouts); |
1da177e4 LT |
492 | |
493 | start_clear_flags(smi_info); | |
494 | smi_info->msg_flags &= ~WDT_PRE_TIMEOUT_INT; | |
495 | spin_unlock(&(smi_info->si_lock)); | |
496 | ipmi_smi_watchdog_pretimeout(smi_info->intf); | |
497 | spin_lock(&(smi_info->si_lock)); | |
498 | } else if (smi_info->msg_flags & RECEIVE_MSG_AVAIL) { | |
499 | /* Messages available. */ | |
500 | smi_info->curr_msg = ipmi_alloc_smi_msg(); | |
b0defcdb | 501 | if (!smi_info->curr_msg) { |
1da177e4 LT |
502 | disable_si_irq(smi_info); |
503 | smi_info->si_state = SI_NORMAL; | |
504 | return; | |
505 | } | |
506 | enable_si_irq(smi_info); | |
507 | ||
508 | smi_info->curr_msg->data[0] = (IPMI_NETFN_APP_REQUEST << 2); | |
509 | smi_info->curr_msg->data[1] = IPMI_GET_MSG_CMD; | |
510 | smi_info->curr_msg->data_size = 2; | |
511 | ||
512 | smi_info->handlers->start_transaction( | |
513 | smi_info->si_sm, | |
514 | smi_info->curr_msg->data, | |
515 | smi_info->curr_msg->data_size); | |
516 | smi_info->si_state = SI_GETTING_MESSAGES; | |
517 | } else if (smi_info->msg_flags & EVENT_MSG_BUFFER_FULL) { | |
518 | /* Events available. */ | |
519 | smi_info->curr_msg = ipmi_alloc_smi_msg(); | |
b0defcdb | 520 | if (!smi_info->curr_msg) { |
1da177e4 LT |
521 | disable_si_irq(smi_info); |
522 | smi_info->si_state = SI_NORMAL; | |
523 | return; | |
524 | } | |
525 | enable_si_irq(smi_info); | |
526 | ||
527 | smi_info->curr_msg->data[0] = (IPMI_NETFN_APP_REQUEST << 2); | |
528 | smi_info->curr_msg->data[1] = IPMI_READ_EVENT_MSG_BUFFER_CMD; | |
529 | smi_info->curr_msg->data_size = 2; | |
530 | ||
531 | smi_info->handlers->start_transaction( | |
532 | smi_info->si_sm, | |
533 | smi_info->curr_msg->data, | |
534 | smi_info->curr_msg->data_size); | |
535 | smi_info->si_state = SI_GETTING_EVENTS; | |
4064d5ef | 536 | } else if (smi_info->msg_flags & OEM_DATA_AVAIL && |
c305e3d3 | 537 | smi_info->oem_data_avail_handler) { |
4064d5ef CM |
538 | if (smi_info->oem_data_avail_handler(smi_info)) |
539 | goto retry; | |
c305e3d3 | 540 | } else |
1da177e4 | 541 | smi_info->si_state = SI_NORMAL; |
1da177e4 LT |
542 | } |
543 | ||
544 | static void handle_transaction_done(struct smi_info *smi_info) | |
545 | { | |
546 | struct ipmi_smi_msg *msg; | |
547 | #ifdef DEBUG_TIMING | |
548 | struct timeval t; | |
549 | ||
550 | do_gettimeofday(&t); | |
c305e3d3 | 551 | printk(KERN_DEBUG "**Done: %d.%9.9d\n", t.tv_sec, t.tv_usec); |
1da177e4 LT |
552 | #endif |
553 | switch (smi_info->si_state) { | |
554 | case SI_NORMAL: | |
b0defcdb | 555 | if (!smi_info->curr_msg) |
1da177e4 LT |
556 | break; |
557 | ||
558 | smi_info->curr_msg->rsp_size | |
559 | = smi_info->handlers->get_result( | |
560 | smi_info->si_sm, | |
561 | smi_info->curr_msg->rsp, | |
562 | IPMI_MAX_MSG_LENGTH); | |
563 | ||
c305e3d3 CM |
564 | /* |
565 | * Do this here becase deliver_recv_msg() releases the | |
566 | * lock, and a new message can be put in during the | |
567 | * time the lock is released. | |
568 | */ | |
1da177e4 LT |
569 | msg = smi_info->curr_msg; |
570 | smi_info->curr_msg = NULL; | |
571 | deliver_recv_msg(smi_info, msg); | |
572 | break; | |
573 | ||
574 | case SI_GETTING_FLAGS: | |
575 | { | |
576 | unsigned char msg[4]; | |
577 | unsigned int len; | |
578 | ||
579 | /* We got the flags from the SMI, now handle them. */ | |
580 | len = smi_info->handlers->get_result(smi_info->si_sm, msg, 4); | |
581 | if (msg[2] != 0) { | |
c305e3d3 | 582 | /* Error fetching flags, just give up for now. */ |
1da177e4 LT |
583 | smi_info->si_state = SI_NORMAL; |
584 | } else if (len < 4) { | |
c305e3d3 CM |
585 | /* |
586 | * Hmm, no flags. That's technically illegal, but | |
587 | * don't use uninitialized data. | |
588 | */ | |
1da177e4 LT |
589 | smi_info->si_state = SI_NORMAL; |
590 | } else { | |
591 | smi_info->msg_flags = msg[3]; | |
592 | handle_flags(smi_info); | |
593 | } | |
594 | break; | |
595 | } | |
596 | ||
597 | case SI_CLEARING_FLAGS: | |
598 | case SI_CLEARING_FLAGS_THEN_SET_IRQ: | |
599 | { | |
600 | unsigned char msg[3]; | |
601 | ||
602 | /* We cleared the flags. */ | |
603 | smi_info->handlers->get_result(smi_info->si_sm, msg, 3); | |
604 | if (msg[2] != 0) { | |
605 | /* Error clearing flags */ | |
279fbd0c MS |
606 | dev_warn(smi_info->dev, |
607 | "Error clearing flags: %2.2x\n", msg[2]); | |
1da177e4 LT |
608 | } |
609 | if (smi_info->si_state == SI_CLEARING_FLAGS_THEN_SET_IRQ) | |
610 | start_enable_irq(smi_info); | |
611 | else | |
612 | smi_info->si_state = SI_NORMAL; | |
613 | break; | |
614 | } | |
615 | ||
616 | case SI_GETTING_EVENTS: | |
617 | { | |
618 | smi_info->curr_msg->rsp_size | |
619 | = smi_info->handlers->get_result( | |
620 | smi_info->si_sm, | |
621 | smi_info->curr_msg->rsp, | |
622 | IPMI_MAX_MSG_LENGTH); | |
623 | ||
c305e3d3 CM |
624 | /* |
625 | * Do this here becase deliver_recv_msg() releases the | |
626 | * lock, and a new message can be put in during the | |
627 | * time the lock is released. | |
628 | */ | |
1da177e4 LT |
629 | msg = smi_info->curr_msg; |
630 | smi_info->curr_msg = NULL; | |
631 | if (msg->rsp[2] != 0) { | |
632 | /* Error getting event, probably done. */ | |
633 | msg->done(msg); | |
634 | ||
635 | /* Take off the event flag. */ | |
636 | smi_info->msg_flags &= ~EVENT_MSG_BUFFER_FULL; | |
637 | handle_flags(smi_info); | |
638 | } else { | |
64959e2d | 639 | smi_inc_stat(smi_info, events); |
1da177e4 | 640 | |
c305e3d3 CM |
641 | /* |
642 | * Do this before we deliver the message | |
643 | * because delivering the message releases the | |
644 | * lock and something else can mess with the | |
645 | * state. | |
646 | */ | |
1da177e4 LT |
647 | handle_flags(smi_info); |
648 | ||
649 | deliver_recv_msg(smi_info, msg); | |
650 | } | |
651 | break; | |
652 | } | |
653 | ||
654 | case SI_GETTING_MESSAGES: | |
655 | { | |
656 | smi_info->curr_msg->rsp_size | |
657 | = smi_info->handlers->get_result( | |
658 | smi_info->si_sm, | |
659 | smi_info->curr_msg->rsp, | |
660 | IPMI_MAX_MSG_LENGTH); | |
661 | ||
c305e3d3 CM |
662 | /* |
663 | * Do this here becase deliver_recv_msg() releases the | |
664 | * lock, and a new message can be put in during the | |
665 | * time the lock is released. | |
666 | */ | |
1da177e4 LT |
667 | msg = smi_info->curr_msg; |
668 | smi_info->curr_msg = NULL; | |
669 | if (msg->rsp[2] != 0) { | |
670 | /* Error getting event, probably done. */ | |
671 | msg->done(msg); | |
672 | ||
673 | /* Take off the msg flag. */ | |
674 | smi_info->msg_flags &= ~RECEIVE_MSG_AVAIL; | |
675 | handle_flags(smi_info); | |
676 | } else { | |
64959e2d | 677 | smi_inc_stat(smi_info, incoming_messages); |
1da177e4 | 678 | |
c305e3d3 CM |
679 | /* |
680 | * Do this before we deliver the message | |
681 | * because delivering the message releases the | |
682 | * lock and something else can mess with the | |
683 | * state. | |
684 | */ | |
1da177e4 LT |
685 | handle_flags(smi_info); |
686 | ||
687 | deliver_recv_msg(smi_info, msg); | |
688 | } | |
689 | break; | |
690 | } | |
691 | ||
692 | case SI_ENABLE_INTERRUPTS1: | |
693 | { | |
694 | unsigned char msg[4]; | |
695 | ||
696 | /* We got the flags from the SMI, now handle them. */ | |
697 | smi_info->handlers->get_result(smi_info->si_sm, msg, 4); | |
698 | if (msg[2] != 0) { | |
279fbd0c MS |
699 | dev_warn(smi_info->dev, "Could not enable interrupts" |
700 | ", failed get, using polled mode.\n"); | |
1da177e4 LT |
701 | smi_info->si_state = SI_NORMAL; |
702 | } else { | |
703 | msg[0] = (IPMI_NETFN_APP_REQUEST << 2); | |
704 | msg[1] = IPMI_SET_BMC_GLOBAL_ENABLES_CMD; | |
ee6cd5f8 CM |
705 | msg[2] = (msg[3] | |
706 | IPMI_BMC_RCV_MSG_INTR | | |
707 | IPMI_BMC_EVT_MSG_INTR); | |
1da177e4 LT |
708 | smi_info->handlers->start_transaction( |
709 | smi_info->si_sm, msg, 3); | |
710 | smi_info->si_state = SI_ENABLE_INTERRUPTS2; | |
711 | } | |
712 | break; | |
713 | } | |
714 | ||
715 | case SI_ENABLE_INTERRUPTS2: | |
716 | { | |
717 | unsigned char msg[4]; | |
718 | ||
719 | /* We got the flags from the SMI, now handle them. */ | |
720 | smi_info->handlers->get_result(smi_info->si_sm, msg, 4); | |
279fbd0c MS |
721 | if (msg[2] != 0) |
722 | dev_warn(smi_info->dev, "Could not enable interrupts" | |
723 | ", failed set, using polled mode.\n"); | |
724 | else | |
ea4078ca | 725 | smi_info->interrupt_disabled = 0; |
1da177e4 LT |
726 | smi_info->si_state = SI_NORMAL; |
727 | break; | |
728 | } | |
ee6cd5f8 CM |
729 | |
730 | case SI_DISABLE_INTERRUPTS1: | |
731 | { | |
732 | unsigned char msg[4]; | |
733 | ||
734 | /* We got the flags from the SMI, now handle them. */ | |
735 | smi_info->handlers->get_result(smi_info->si_sm, msg, 4); | |
736 | if (msg[2] != 0) { | |
279fbd0c MS |
737 | dev_warn(smi_info->dev, "Could not disable interrupts" |
738 | ", failed get.\n"); | |
ee6cd5f8 CM |
739 | smi_info->si_state = SI_NORMAL; |
740 | } else { | |
741 | msg[0] = (IPMI_NETFN_APP_REQUEST << 2); | |
742 | msg[1] = IPMI_SET_BMC_GLOBAL_ENABLES_CMD; | |
743 | msg[2] = (msg[3] & | |
744 | ~(IPMI_BMC_RCV_MSG_INTR | | |
745 | IPMI_BMC_EVT_MSG_INTR)); | |
746 | smi_info->handlers->start_transaction( | |
747 | smi_info->si_sm, msg, 3); | |
748 | smi_info->si_state = SI_DISABLE_INTERRUPTS2; | |
749 | } | |
750 | break; | |
751 | } | |
752 | ||
753 | case SI_DISABLE_INTERRUPTS2: | |
754 | { | |
755 | unsigned char msg[4]; | |
756 | ||
757 | /* We got the flags from the SMI, now handle them. */ | |
758 | smi_info->handlers->get_result(smi_info->si_sm, msg, 4); | |
759 | if (msg[2] != 0) { | |
279fbd0c MS |
760 | dev_warn(smi_info->dev, "Could not disable interrupts" |
761 | ", failed set.\n"); | |
ee6cd5f8 CM |
762 | } |
763 | smi_info->si_state = SI_NORMAL; | |
764 | break; | |
765 | } | |
1da177e4 LT |
766 | } |
767 | } | |
768 | ||
c305e3d3 CM |
769 | /* |
770 | * Called on timeouts and events. Timeouts should pass the elapsed | |
771 | * time, interrupts should pass in zero. Must be called with | |
772 | * si_lock held and interrupts disabled. | |
773 | */ | |
1da177e4 LT |
774 | static enum si_sm_result smi_event_handler(struct smi_info *smi_info, |
775 | int time) | |
776 | { | |
777 | enum si_sm_result si_sm_result; | |
778 | ||
779 | restart: | |
c305e3d3 CM |
780 | /* |
781 | * There used to be a loop here that waited a little while | |
782 | * (around 25us) before giving up. That turned out to be | |
783 | * pointless, the minimum delays I was seeing were in the 300us | |
784 | * range, which is far too long to wait in an interrupt. So | |
785 | * we just run until the state machine tells us something | |
786 | * happened or it needs a delay. | |
787 | */ | |
1da177e4 LT |
788 | si_sm_result = smi_info->handlers->event(smi_info->si_sm, time); |
789 | time = 0; | |
790 | while (si_sm_result == SI_SM_CALL_WITHOUT_DELAY) | |
1da177e4 | 791 | si_sm_result = smi_info->handlers->event(smi_info->si_sm, 0); |
1da177e4 | 792 | |
c305e3d3 | 793 | if (si_sm_result == SI_SM_TRANSACTION_COMPLETE) { |
64959e2d | 794 | smi_inc_stat(smi_info, complete_transactions); |
1da177e4 LT |
795 | |
796 | handle_transaction_done(smi_info); | |
797 | si_sm_result = smi_info->handlers->event(smi_info->si_sm, 0); | |
c305e3d3 | 798 | } else if (si_sm_result == SI_SM_HOSED) { |
64959e2d | 799 | smi_inc_stat(smi_info, hosed_count); |
1da177e4 | 800 | |
c305e3d3 CM |
801 | /* |
802 | * Do the before return_hosed_msg, because that | |
803 | * releases the lock. | |
804 | */ | |
1da177e4 LT |
805 | smi_info->si_state = SI_NORMAL; |
806 | if (smi_info->curr_msg != NULL) { | |
c305e3d3 CM |
807 | /* |
808 | * If we were handling a user message, format | |
809 | * a response to send to the upper layer to | |
810 | * tell it about the error. | |
811 | */ | |
4d7cbac7 | 812 | return_hosed_msg(smi_info, IPMI_ERR_UNSPECIFIED); |
1da177e4 LT |
813 | } |
814 | si_sm_result = smi_info->handlers->event(smi_info->si_sm, 0); | |
815 | } | |
816 | ||
4ea18425 CM |
817 | /* |
818 | * We prefer handling attn over new messages. But don't do | |
819 | * this if there is not yet an upper layer to handle anything. | |
820 | */ | |
c305e3d3 | 821 | if (likely(smi_info->intf) && si_sm_result == SI_SM_ATTN) { |
1da177e4 LT |
822 | unsigned char msg[2]; |
823 | ||
64959e2d | 824 | smi_inc_stat(smi_info, attentions); |
1da177e4 | 825 | |
c305e3d3 CM |
826 | /* |
827 | * Got a attn, send down a get message flags to see | |
828 | * what's causing it. It would be better to handle | |
829 | * this in the upper layer, but due to the way | |
830 | * interrupts work with the SMI, that's not really | |
831 | * possible. | |
832 | */ | |
1da177e4 LT |
833 | msg[0] = (IPMI_NETFN_APP_REQUEST << 2); |
834 | msg[1] = IPMI_GET_MSG_FLAGS_CMD; | |
835 | ||
836 | smi_info->handlers->start_transaction( | |
837 | smi_info->si_sm, msg, 2); | |
838 | smi_info->si_state = SI_GETTING_FLAGS; | |
839 | goto restart; | |
840 | } | |
841 | ||
842 | /* If we are currently idle, try to start the next message. */ | |
843 | if (si_sm_result == SI_SM_IDLE) { | |
64959e2d | 844 | smi_inc_stat(smi_info, idles); |
1da177e4 LT |
845 | |
846 | si_sm_result = start_next_msg(smi_info); | |
847 | if (si_sm_result != SI_SM_IDLE) | |
848 | goto restart; | |
c305e3d3 | 849 | } |
1da177e4 LT |
850 | |
851 | if ((si_sm_result == SI_SM_IDLE) | |
c305e3d3 CM |
852 | && (atomic_read(&smi_info->req_events))) { |
853 | /* | |
854 | * We are idle and the upper layer requested that I fetch | |
855 | * events, so do so. | |
856 | */ | |
55162fb1 | 857 | atomic_set(&smi_info->req_events, 0); |
1da177e4 | 858 | |
55162fb1 CM |
859 | smi_info->curr_msg = ipmi_alloc_smi_msg(); |
860 | if (!smi_info->curr_msg) | |
861 | goto out; | |
1da177e4 | 862 | |
55162fb1 CM |
863 | smi_info->curr_msg->data[0] = (IPMI_NETFN_APP_REQUEST << 2); |
864 | smi_info->curr_msg->data[1] = IPMI_READ_EVENT_MSG_BUFFER_CMD; | |
865 | smi_info->curr_msg->data_size = 2; | |
1da177e4 LT |
866 | |
867 | smi_info->handlers->start_transaction( | |
55162fb1 CM |
868 | smi_info->si_sm, |
869 | smi_info->curr_msg->data, | |
870 | smi_info->curr_msg->data_size); | |
871 | smi_info->si_state = SI_GETTING_EVENTS; | |
1da177e4 LT |
872 | goto restart; |
873 | } | |
55162fb1 | 874 | out: |
1da177e4 LT |
875 | return si_sm_result; |
876 | } | |
877 | ||
878 | static void sender(void *send_info, | |
879 | struct ipmi_smi_msg *msg, | |
880 | int priority) | |
881 | { | |
882 | struct smi_info *smi_info = send_info; | |
883 | enum si_sm_result result; | |
884 | unsigned long flags; | |
885 | #ifdef DEBUG_TIMING | |
886 | struct timeval t; | |
887 | #endif | |
888 | ||
b361e27b CM |
889 | if (atomic_read(&smi_info->stop_operation)) { |
890 | msg->rsp[0] = msg->data[0] | 4; | |
891 | msg->rsp[1] = msg->data[1]; | |
892 | msg->rsp[2] = IPMI_ERR_UNSPECIFIED; | |
893 | msg->rsp_size = 3; | |
894 | deliver_recv_msg(smi_info, msg); | |
895 | return; | |
896 | } | |
897 | ||
1da177e4 LT |
898 | #ifdef DEBUG_TIMING |
899 | do_gettimeofday(&t); | |
900 | printk("**Enqueue: %d.%9.9d\n", t.tv_sec, t.tv_usec); | |
901 | #endif | |
902 | ||
ea4078ca MG |
903 | mod_timer(&smi_info->si_timer, jiffies + SI_TIMEOUT_JIFFIES); |
904 | ||
3326f4f2 MG |
905 | if (smi_info->thread) |
906 | wake_up_process(smi_info->thread); | |
907 | ||
1da177e4 | 908 | if (smi_info->run_to_completion) { |
bda4c30a CM |
909 | /* |
910 | * If we are running to completion, then throw it in | |
911 | * the list and run transactions until everything is | |
912 | * clear. Priority doesn't matter here. | |
913 | */ | |
914 | ||
915 | /* | |
916 | * Run to completion means we are single-threaded, no | |
917 | * need for locks. | |
918 | */ | |
1da177e4 LT |
919 | list_add_tail(&(msg->link), &(smi_info->xmit_msgs)); |
920 | ||
1da177e4 LT |
921 | result = smi_event_handler(smi_info, 0); |
922 | while (result != SI_SM_IDLE) { | |
923 | udelay(SI_SHORT_TIMEOUT_USEC); | |
924 | result = smi_event_handler(smi_info, | |
925 | SI_SHORT_TIMEOUT_USEC); | |
926 | } | |
1da177e4 | 927 | return; |
1da177e4 | 928 | } |
1da177e4 | 929 | |
bda4c30a CM |
930 | spin_lock_irqsave(&smi_info->msg_lock, flags); |
931 | if (priority > 0) | |
932 | list_add_tail(&msg->link, &smi_info->hp_xmit_msgs); | |
933 | else | |
934 | list_add_tail(&msg->link, &smi_info->xmit_msgs); | |
935 | spin_unlock_irqrestore(&smi_info->msg_lock, flags); | |
936 | ||
937 | spin_lock_irqsave(&smi_info->si_lock, flags); | |
c305e3d3 | 938 | if (smi_info->si_state == SI_NORMAL && smi_info->curr_msg == NULL) |
1da177e4 | 939 | start_next_msg(smi_info); |
bda4c30a | 940 | spin_unlock_irqrestore(&smi_info->si_lock, flags); |
1da177e4 LT |
941 | } |
942 | ||
943 | static void set_run_to_completion(void *send_info, int i_run_to_completion) | |
944 | { | |
945 | struct smi_info *smi_info = send_info; | |
946 | enum si_sm_result result; | |
1da177e4 LT |
947 | |
948 | smi_info->run_to_completion = i_run_to_completion; | |
949 | if (i_run_to_completion) { | |
950 | result = smi_event_handler(smi_info, 0); | |
951 | while (result != SI_SM_IDLE) { | |
952 | udelay(SI_SHORT_TIMEOUT_USEC); | |
953 | result = smi_event_handler(smi_info, | |
954 | SI_SHORT_TIMEOUT_USEC); | |
955 | } | |
956 | } | |
1da177e4 LT |
957 | } |
958 | ||
ae74e823 MW |
959 | /* |
960 | * Use -1 in the nsec value of the busy waiting timespec to tell that | |
961 | * we are spinning in kipmid looking for something and not delaying | |
962 | * between checks | |
963 | */ | |
964 | static inline void ipmi_si_set_not_busy(struct timespec *ts) | |
965 | { | |
966 | ts->tv_nsec = -1; | |
967 | } | |
968 | static inline int ipmi_si_is_busy(struct timespec *ts) | |
969 | { | |
970 | return ts->tv_nsec != -1; | |
971 | } | |
972 | ||
973 | static int ipmi_thread_busy_wait(enum si_sm_result smi_result, | |
974 | const struct smi_info *smi_info, | |
975 | struct timespec *busy_until) | |
976 | { | |
977 | unsigned int max_busy_us = 0; | |
978 | ||
979 | if (smi_info->intf_num < num_max_busy_us) | |
980 | max_busy_us = kipmid_max_busy_us[smi_info->intf_num]; | |
981 | if (max_busy_us == 0 || smi_result != SI_SM_CALL_WITH_DELAY) | |
982 | ipmi_si_set_not_busy(busy_until); | |
983 | else if (!ipmi_si_is_busy(busy_until)) { | |
984 | getnstimeofday(busy_until); | |
985 | timespec_add_ns(busy_until, max_busy_us*NSEC_PER_USEC); | |
986 | } else { | |
987 | struct timespec now; | |
988 | getnstimeofday(&now); | |
989 | if (unlikely(timespec_compare(&now, busy_until) > 0)) { | |
990 | ipmi_si_set_not_busy(busy_until); | |
991 | return 0; | |
992 | } | |
993 | } | |
994 | return 1; | |
995 | } | |
996 | ||
997 | ||
998 | /* | |
999 | * A busy-waiting loop for speeding up IPMI operation. | |
1000 | * | |
1001 | * Lousy hardware makes this hard. This is only enabled for systems | |
1002 | * that are not BT and do not have interrupts. It starts spinning | |
1003 | * when an operation is complete or until max_busy tells it to stop | |
1004 | * (if that is enabled). See the paragraph on kimid_max_busy_us in | |
1005 | * Documentation/IPMI.txt for details. | |
1006 | */ | |
a9a2c44f CM |
1007 | static int ipmi_thread(void *data) |
1008 | { | |
1009 | struct smi_info *smi_info = data; | |
e9a705a0 | 1010 | unsigned long flags; |
a9a2c44f | 1011 | enum si_sm_result smi_result; |
ae74e823 | 1012 | struct timespec busy_until; |
a9a2c44f | 1013 | |
ae74e823 | 1014 | ipmi_si_set_not_busy(&busy_until); |
a9a2c44f | 1015 | set_user_nice(current, 19); |
e9a705a0 | 1016 | while (!kthread_should_stop()) { |
ae74e823 MW |
1017 | int busy_wait; |
1018 | ||
a9a2c44f | 1019 | spin_lock_irqsave(&(smi_info->si_lock), flags); |
8a3628d5 | 1020 | smi_result = smi_event_handler(smi_info, 0); |
a9a2c44f | 1021 | spin_unlock_irqrestore(&(smi_info->si_lock), flags); |
ae74e823 MW |
1022 | busy_wait = ipmi_thread_busy_wait(smi_result, smi_info, |
1023 | &busy_until); | |
c305e3d3 CM |
1024 | if (smi_result == SI_SM_CALL_WITHOUT_DELAY) |
1025 | ; /* do nothing */ | |
ae74e823 | 1026 | else if (smi_result == SI_SM_CALL_WITH_DELAY && busy_wait) |
33979734 | 1027 | schedule(); |
3326f4f2 MG |
1028 | else if (smi_result == SI_SM_IDLE) |
1029 | schedule_timeout_interruptible(100); | |
e9a705a0 | 1030 | else |
8d1f66dc | 1031 | schedule_timeout_interruptible(1); |
a9a2c44f | 1032 | } |
a9a2c44f CM |
1033 | return 0; |
1034 | } | |
1035 | ||
1036 | ||
1da177e4 LT |
1037 | static void poll(void *send_info) |
1038 | { | |
1039 | struct smi_info *smi_info = send_info; | |
fcfa4724 | 1040 | unsigned long flags; |
1da177e4 | 1041 | |
15c62e10 CM |
1042 | /* |
1043 | * Make sure there is some delay in the poll loop so we can | |
1044 | * drive time forward and timeout things. | |
1045 | */ | |
1046 | udelay(10); | |
fcfa4724 | 1047 | spin_lock_irqsave(&smi_info->si_lock, flags); |
15c62e10 | 1048 | smi_event_handler(smi_info, 10); |
fcfa4724 | 1049 | spin_unlock_irqrestore(&smi_info->si_lock, flags); |
1da177e4 LT |
1050 | } |
1051 | ||
1052 | static void request_events(void *send_info) | |
1053 | { | |
1054 | struct smi_info *smi_info = send_info; | |
1055 | ||
40112ae7 CM |
1056 | if (atomic_read(&smi_info->stop_operation) || |
1057 | !smi_info->has_event_buffer) | |
b361e27b CM |
1058 | return; |
1059 | ||
1da177e4 LT |
1060 | atomic_set(&smi_info->req_events, 1); |
1061 | } | |
1062 | ||
0c8204b3 | 1063 | static int initialized; |
1da177e4 | 1064 | |
1da177e4 LT |
1065 | static void smi_timeout(unsigned long data) |
1066 | { | |
1067 | struct smi_info *smi_info = (struct smi_info *) data; | |
1068 | enum si_sm_result smi_result; | |
1069 | unsigned long flags; | |
1070 | unsigned long jiffies_now; | |
c4edff1c | 1071 | long time_diff; |
3326f4f2 | 1072 | long timeout; |
1da177e4 LT |
1073 | #ifdef DEBUG_TIMING |
1074 | struct timeval t; | |
1075 | #endif | |
1076 | ||
1da177e4 LT |
1077 | spin_lock_irqsave(&(smi_info->si_lock), flags); |
1078 | #ifdef DEBUG_TIMING | |
1079 | do_gettimeofday(&t); | |
c305e3d3 | 1080 | printk(KERN_DEBUG "**Timer: %d.%9.9d\n", t.tv_sec, t.tv_usec); |
1da177e4 LT |
1081 | #endif |
1082 | jiffies_now = jiffies; | |
c4edff1c | 1083 | time_diff = (((long)jiffies_now - (long)smi_info->last_timeout_jiffies) |
1da177e4 LT |
1084 | * SI_USEC_PER_JIFFY); |
1085 | smi_result = smi_event_handler(smi_info, time_diff); | |
1086 | ||
1087 | spin_unlock_irqrestore(&(smi_info->si_lock), flags); | |
1088 | ||
1089 | smi_info->last_timeout_jiffies = jiffies_now; | |
1090 | ||
b0defcdb | 1091 | if ((smi_info->irq) && (!smi_info->interrupt_disabled)) { |
1da177e4 | 1092 | /* Running with interrupts, only do long timeouts. */ |
3326f4f2 | 1093 | timeout = jiffies + SI_TIMEOUT_JIFFIES; |
64959e2d | 1094 | smi_inc_stat(smi_info, long_timeouts); |
3326f4f2 | 1095 | goto do_mod_timer; |
1da177e4 LT |
1096 | } |
1097 | ||
c305e3d3 CM |
1098 | /* |
1099 | * If the state machine asks for a short delay, then shorten | |
1100 | * the timer timeout. | |
1101 | */ | |
1da177e4 | 1102 | if (smi_result == SI_SM_CALL_WITH_DELAY) { |
64959e2d | 1103 | smi_inc_stat(smi_info, short_timeouts); |
3326f4f2 | 1104 | timeout = jiffies + 1; |
1da177e4 | 1105 | } else { |
64959e2d | 1106 | smi_inc_stat(smi_info, long_timeouts); |
3326f4f2 | 1107 | timeout = jiffies + SI_TIMEOUT_JIFFIES; |
1da177e4 LT |
1108 | } |
1109 | ||
3326f4f2 MG |
1110 | do_mod_timer: |
1111 | if (smi_result != SI_SM_IDLE) | |
1112 | mod_timer(&(smi_info->si_timer), timeout); | |
1da177e4 LT |
1113 | } |
1114 | ||
7d12e780 | 1115 | static irqreturn_t si_irq_handler(int irq, void *data) |
1da177e4 LT |
1116 | { |
1117 | struct smi_info *smi_info = data; | |
1118 | unsigned long flags; | |
1119 | #ifdef DEBUG_TIMING | |
1120 | struct timeval t; | |
1121 | #endif | |
1122 | ||
1123 | spin_lock_irqsave(&(smi_info->si_lock), flags); | |
1124 | ||
64959e2d | 1125 | smi_inc_stat(smi_info, interrupts); |
1da177e4 | 1126 | |
1da177e4 LT |
1127 | #ifdef DEBUG_TIMING |
1128 | do_gettimeofday(&t); | |
c305e3d3 | 1129 | printk(KERN_DEBUG "**Interrupt: %d.%9.9d\n", t.tv_sec, t.tv_usec); |
1da177e4 LT |
1130 | #endif |
1131 | smi_event_handler(smi_info, 0); | |
1da177e4 LT |
1132 | spin_unlock_irqrestore(&(smi_info->si_lock), flags); |
1133 | return IRQ_HANDLED; | |
1134 | } | |
1135 | ||
7d12e780 | 1136 | static irqreturn_t si_bt_irq_handler(int irq, void *data) |
9dbf68f9 CM |
1137 | { |
1138 | struct smi_info *smi_info = data; | |
1139 | /* We need to clear the IRQ flag for the BT interface. */ | |
1140 | smi_info->io.outputb(&smi_info->io, IPMI_BT_INTMASK_REG, | |
1141 | IPMI_BT_INTMASK_CLEAR_IRQ_BIT | |
1142 | | IPMI_BT_INTMASK_ENABLE_IRQ_BIT); | |
7d12e780 | 1143 | return si_irq_handler(irq, data); |
9dbf68f9 CM |
1144 | } |
1145 | ||
453823ba CM |
1146 | static int smi_start_processing(void *send_info, |
1147 | ipmi_smi_t intf) | |
1148 | { | |
1149 | struct smi_info *new_smi = send_info; | |
a51f4a81 | 1150 | int enable = 0; |
453823ba CM |
1151 | |
1152 | new_smi->intf = intf; | |
1153 | ||
c45adc39 CM |
1154 | /* Try to claim any interrupts. */ |
1155 | if (new_smi->irq_setup) | |
1156 | new_smi->irq_setup(new_smi); | |
1157 | ||
453823ba CM |
1158 | /* Set up the timer that drives the interface. */ |
1159 | setup_timer(&new_smi->si_timer, smi_timeout, (long)new_smi); | |
1160 | new_smi->last_timeout_jiffies = jiffies; | |
1161 | mod_timer(&new_smi->si_timer, jiffies + SI_TIMEOUT_JIFFIES); | |
1162 | ||
a51f4a81 CM |
1163 | /* |
1164 | * Check if the user forcefully enabled the daemon. | |
1165 | */ | |
1166 | if (new_smi->intf_num < num_force_kipmid) | |
1167 | enable = force_kipmid[new_smi->intf_num]; | |
df3fe8de CM |
1168 | /* |
1169 | * The BT interface is efficient enough to not need a thread, | |
1170 | * and there is no need for a thread if we have interrupts. | |
1171 | */ | |
c305e3d3 | 1172 | else if ((new_smi->si_type != SI_BT) && (!new_smi->irq)) |
a51f4a81 CM |
1173 | enable = 1; |
1174 | ||
1175 | if (enable) { | |
453823ba CM |
1176 | new_smi->thread = kthread_run(ipmi_thread, new_smi, |
1177 | "kipmi%d", new_smi->intf_num); | |
1178 | if (IS_ERR(new_smi->thread)) { | |
279fbd0c MS |
1179 | dev_notice(new_smi->dev, "Could not start" |
1180 | " kernel thread due to error %ld, only using" | |
1181 | " timers to drive the interface\n", | |
1182 | PTR_ERR(new_smi->thread)); | |
453823ba CM |
1183 | new_smi->thread = NULL; |
1184 | } | |
1185 | } | |
1186 | ||
1187 | return 0; | |
1188 | } | |
9dbf68f9 | 1189 | |
16f4232c ZY |
1190 | static int get_smi_info(void *send_info, struct ipmi_smi_info *data) |
1191 | { | |
1192 | struct smi_info *smi = send_info; | |
1193 | ||
1194 | data->addr_src = smi->addr_source; | |
1195 | data->dev = smi->dev; | |
1196 | data->addr_info = smi->addr_info; | |
1197 | get_device(smi->dev); | |
1198 | ||
1199 | return 0; | |
1200 | } | |
1201 | ||
b9675136 CM |
1202 | static void set_maintenance_mode(void *send_info, int enable) |
1203 | { | |
1204 | struct smi_info *smi_info = send_info; | |
1205 | ||
1206 | if (!enable) | |
1207 | atomic_set(&smi_info->req_events, 0); | |
1208 | } | |
1209 | ||
c305e3d3 | 1210 | static struct ipmi_smi_handlers handlers = { |
1da177e4 | 1211 | .owner = THIS_MODULE, |
453823ba | 1212 | .start_processing = smi_start_processing, |
16f4232c | 1213 | .get_smi_info = get_smi_info, |
1da177e4 LT |
1214 | .sender = sender, |
1215 | .request_events = request_events, | |
b9675136 | 1216 | .set_maintenance_mode = set_maintenance_mode, |
1da177e4 LT |
1217 | .set_run_to_completion = set_run_to_completion, |
1218 | .poll = poll, | |
1219 | }; | |
1220 | ||
c305e3d3 CM |
1221 | /* |
1222 | * There can be 4 IO ports passed in (with or without IRQs), 4 addresses, | |
1223 | * a default IO port, and 1 ACPI/SPMI address. That sets SI_MAX_DRIVERS. | |
1224 | */ | |
1da177e4 | 1225 | |
b0defcdb | 1226 | static LIST_HEAD(smi_infos); |
d6dfd131 | 1227 | static DEFINE_MUTEX(smi_infos_lock); |
b0defcdb | 1228 | static int smi_num; /* Used to sequence the SMIs */ |
1da177e4 | 1229 | |
1da177e4 | 1230 | #define DEFAULT_REGSPACING 1 |
dba9b4f6 | 1231 | #define DEFAULT_REGSIZE 1 |
1da177e4 LT |
1232 | |
1233 | static int si_trydefaults = 1; | |
1234 | static char *si_type[SI_MAX_PARMS]; | |
1235 | #define MAX_SI_TYPE_STR 30 | |
1236 | static char si_type_str[MAX_SI_TYPE_STR]; | |
1237 | static unsigned long addrs[SI_MAX_PARMS]; | |
64a6f950 | 1238 | static unsigned int num_addrs; |
1da177e4 | 1239 | static unsigned int ports[SI_MAX_PARMS]; |
64a6f950 | 1240 | static unsigned int num_ports; |
1da177e4 | 1241 | static int irqs[SI_MAX_PARMS]; |
64a6f950 | 1242 | static unsigned int num_irqs; |
1da177e4 | 1243 | static int regspacings[SI_MAX_PARMS]; |
64a6f950 | 1244 | static unsigned int num_regspacings; |
1da177e4 | 1245 | static int regsizes[SI_MAX_PARMS]; |
64a6f950 | 1246 | static unsigned int num_regsizes; |
1da177e4 | 1247 | static int regshifts[SI_MAX_PARMS]; |
64a6f950 | 1248 | static unsigned int num_regshifts; |
2f95d513 | 1249 | static int slave_addrs[SI_MAX_PARMS]; /* Leaving 0 chooses the default value */ |
64a6f950 | 1250 | static unsigned int num_slave_addrs; |
1da177e4 | 1251 | |
b361e27b CM |
1252 | #define IPMI_IO_ADDR_SPACE 0 |
1253 | #define IPMI_MEM_ADDR_SPACE 1 | |
1d5636cc | 1254 | static char *addr_space_to_str[] = { "i/o", "mem" }; |
b361e27b CM |
1255 | |
1256 | static int hotmod_handler(const char *val, struct kernel_param *kp); | |
1257 | ||
1258 | module_param_call(hotmod, hotmod_handler, NULL, NULL, 0200); | |
1259 | MODULE_PARM_DESC(hotmod, "Add and remove interfaces. See" | |
1260 | " Documentation/IPMI.txt in the kernel sources for the" | |
1261 | " gory details."); | |
1da177e4 LT |
1262 | |
1263 | module_param_named(trydefaults, si_trydefaults, bool, 0); | |
1264 | MODULE_PARM_DESC(trydefaults, "Setting this to 'false' will disable the" | |
1265 | " default scan of the KCS and SMIC interface at the standard" | |
1266 | " address"); | |
1267 | module_param_string(type, si_type_str, MAX_SI_TYPE_STR, 0); | |
1268 | MODULE_PARM_DESC(type, "Defines the type of each interface, each" | |
1269 | " interface separated by commas. The types are 'kcs'," | |
1270 | " 'smic', and 'bt'. For example si_type=kcs,bt will set" | |
1271 | " the first interface to kcs and the second to bt"); | |
64a6f950 | 1272 | module_param_array(addrs, ulong, &num_addrs, 0); |
1da177e4 LT |
1273 | MODULE_PARM_DESC(addrs, "Sets the memory address of each interface, the" |
1274 | " addresses separated by commas. Only use if an interface" | |
1275 | " is in memory. Otherwise, set it to zero or leave" | |
1276 | " it blank."); | |
64a6f950 | 1277 | module_param_array(ports, uint, &num_ports, 0); |
1da177e4 LT |
1278 | MODULE_PARM_DESC(ports, "Sets the port address of each interface, the" |
1279 | " addresses separated by commas. Only use if an interface" | |
1280 | " is a port. Otherwise, set it to zero or leave" | |
1281 | " it blank."); | |
1282 | module_param_array(irqs, int, &num_irqs, 0); | |
1283 | MODULE_PARM_DESC(irqs, "Sets the interrupt of each interface, the" | |
1284 | " addresses separated by commas. Only use if an interface" | |
1285 | " has an interrupt. Otherwise, set it to zero or leave" | |
1286 | " it blank."); | |
1287 | module_param_array(regspacings, int, &num_regspacings, 0); | |
1288 | MODULE_PARM_DESC(regspacings, "The number of bytes between the start address" | |
1289 | " and each successive register used by the interface. For" | |
1290 | " instance, if the start address is 0xca2 and the spacing" | |
1291 | " is 2, then the second address is at 0xca4. Defaults" | |
1292 | " to 1."); | |
1293 | module_param_array(regsizes, int, &num_regsizes, 0); | |
1294 | MODULE_PARM_DESC(regsizes, "The size of the specific IPMI register in bytes." | |
1295 | " This should generally be 1, 2, 4, or 8 for an 8-bit," | |
1296 | " 16-bit, 32-bit, or 64-bit register. Use this if you" | |
1297 | " the 8-bit IPMI register has to be read from a larger" | |
1298 | " register."); | |
1299 | module_param_array(regshifts, int, &num_regshifts, 0); | |
1300 | MODULE_PARM_DESC(regshifts, "The amount to shift the data read from the." | |
1301 | " IPMI register, in bits. For instance, if the data" | |
1302 | " is read from a 32-bit word and the IPMI data is in" | |
1303 | " bit 8-15, then the shift would be 8"); | |
1304 | module_param_array(slave_addrs, int, &num_slave_addrs, 0); | |
1305 | MODULE_PARM_DESC(slave_addrs, "Set the default IPMB slave address for" | |
1306 | " the controller. Normally this is 0x20, but can be" | |
1307 | " overridden by this parm. This is an array indexed" | |
1308 | " by interface number."); | |
a51f4a81 CM |
1309 | module_param_array(force_kipmid, int, &num_force_kipmid, 0); |
1310 | MODULE_PARM_DESC(force_kipmid, "Force the kipmi daemon to be enabled (1) or" | |
1311 | " disabled(0). Normally the IPMI driver auto-detects" | |
1312 | " this, but the value may be overridden by this parm."); | |
b361e27b CM |
1313 | module_param(unload_when_empty, int, 0); |
1314 | MODULE_PARM_DESC(unload_when_empty, "Unload the module if no interfaces are" | |
1315 | " specified or found, default is 1. Setting to 0" | |
1316 | " is useful for hot add of devices using hotmod."); | |
ae74e823 MW |
1317 | module_param_array(kipmid_max_busy_us, uint, &num_max_busy_us, 0644); |
1318 | MODULE_PARM_DESC(kipmid_max_busy_us, | |
1319 | "Max time (in microseconds) to busy-wait for IPMI data before" | |
1320 | " sleeping. 0 (default) means to wait forever. Set to 100-500" | |
1321 | " if kipmid is using up a lot of CPU time."); | |
1da177e4 LT |
1322 | |
1323 | ||
b0defcdb | 1324 | static void std_irq_cleanup(struct smi_info *info) |
1da177e4 | 1325 | { |
b0defcdb CM |
1326 | if (info->si_type == SI_BT) |
1327 | /* Disable the interrupt in the BT interface. */ | |
1328 | info->io.outputb(&info->io, IPMI_BT_INTMASK_REG, 0); | |
1329 | free_irq(info->irq, info); | |
1da177e4 | 1330 | } |
1da177e4 LT |
1331 | |
1332 | static int std_irq_setup(struct smi_info *info) | |
1333 | { | |
1334 | int rv; | |
1335 | ||
b0defcdb | 1336 | if (!info->irq) |
1da177e4 LT |
1337 | return 0; |
1338 | ||
9dbf68f9 CM |
1339 | if (info->si_type == SI_BT) { |
1340 | rv = request_irq(info->irq, | |
1341 | si_bt_irq_handler, | |
ee6cd5f8 | 1342 | IRQF_SHARED | IRQF_DISABLED, |
9dbf68f9 CM |
1343 | DEVICE_NAME, |
1344 | info); | |
b0defcdb | 1345 | if (!rv) |
9dbf68f9 CM |
1346 | /* Enable the interrupt in the BT interface. */ |
1347 | info->io.outputb(&info->io, IPMI_BT_INTMASK_REG, | |
1348 | IPMI_BT_INTMASK_ENABLE_IRQ_BIT); | |
1349 | } else | |
1350 | rv = request_irq(info->irq, | |
1351 | si_irq_handler, | |
ee6cd5f8 | 1352 | IRQF_SHARED | IRQF_DISABLED, |
9dbf68f9 CM |
1353 | DEVICE_NAME, |
1354 | info); | |
1da177e4 | 1355 | if (rv) { |
279fbd0c MS |
1356 | dev_warn(info->dev, "%s unable to claim interrupt %d," |
1357 | " running polled\n", | |
1358 | DEVICE_NAME, info->irq); | |
1da177e4 LT |
1359 | info->irq = 0; |
1360 | } else { | |
b0defcdb | 1361 | info->irq_cleanup = std_irq_cleanup; |
279fbd0c | 1362 | dev_info(info->dev, "Using irq %d\n", info->irq); |
1da177e4 LT |
1363 | } |
1364 | ||
1365 | return rv; | |
1366 | } | |
1367 | ||
1da177e4 LT |
1368 | static unsigned char port_inb(struct si_sm_io *io, unsigned int offset) |
1369 | { | |
b0defcdb | 1370 | unsigned int addr = io->addr_data; |
1da177e4 | 1371 | |
b0defcdb | 1372 | return inb(addr + (offset * io->regspacing)); |
1da177e4 LT |
1373 | } |
1374 | ||
1375 | static void port_outb(struct si_sm_io *io, unsigned int offset, | |
1376 | unsigned char b) | |
1377 | { | |
b0defcdb | 1378 | unsigned int addr = io->addr_data; |
1da177e4 | 1379 | |
b0defcdb | 1380 | outb(b, addr + (offset * io->regspacing)); |
1da177e4 LT |
1381 | } |
1382 | ||
1383 | static unsigned char port_inw(struct si_sm_io *io, unsigned int offset) | |
1384 | { | |
b0defcdb | 1385 | unsigned int addr = io->addr_data; |
1da177e4 | 1386 | |
b0defcdb | 1387 | return (inw(addr + (offset * io->regspacing)) >> io->regshift) & 0xff; |
1da177e4 LT |
1388 | } |
1389 | ||
1390 | static void port_outw(struct si_sm_io *io, unsigned int offset, | |
1391 | unsigned char b) | |
1392 | { | |
b0defcdb | 1393 | unsigned int addr = io->addr_data; |
1da177e4 | 1394 | |
b0defcdb | 1395 | outw(b << io->regshift, addr + (offset * io->regspacing)); |
1da177e4 LT |
1396 | } |
1397 | ||
1398 | static unsigned char port_inl(struct si_sm_io *io, unsigned int offset) | |
1399 | { | |
b0defcdb | 1400 | unsigned int addr = io->addr_data; |
1da177e4 | 1401 | |
b0defcdb | 1402 | return (inl(addr + (offset * io->regspacing)) >> io->regshift) & 0xff; |
1da177e4 LT |
1403 | } |
1404 | ||
1405 | static void port_outl(struct si_sm_io *io, unsigned int offset, | |
1406 | unsigned char b) | |
1407 | { | |
b0defcdb | 1408 | unsigned int addr = io->addr_data; |
1da177e4 | 1409 | |
b0defcdb | 1410 | outl(b << io->regshift, addr+(offset * io->regspacing)); |
1da177e4 LT |
1411 | } |
1412 | ||
1413 | static void port_cleanup(struct smi_info *info) | |
1414 | { | |
b0defcdb | 1415 | unsigned int addr = info->io.addr_data; |
d61a3ead | 1416 | int idx; |
1da177e4 | 1417 | |
b0defcdb | 1418 | if (addr) { |
c305e3d3 | 1419 | for (idx = 0; idx < info->io_size; idx++) |
d61a3ead CM |
1420 | release_region(addr + idx * info->io.regspacing, |
1421 | info->io.regsize); | |
1da177e4 | 1422 | } |
1da177e4 LT |
1423 | } |
1424 | ||
1425 | static int port_setup(struct smi_info *info) | |
1426 | { | |
b0defcdb | 1427 | unsigned int addr = info->io.addr_data; |
d61a3ead | 1428 | int idx; |
1da177e4 | 1429 | |
b0defcdb | 1430 | if (!addr) |
1da177e4 LT |
1431 | return -ENODEV; |
1432 | ||
1433 | info->io_cleanup = port_cleanup; | |
1434 | ||
c305e3d3 CM |
1435 | /* |
1436 | * Figure out the actual inb/inw/inl/etc routine to use based | |
1437 | * upon the register size. | |
1438 | */ | |
1da177e4 LT |
1439 | switch (info->io.regsize) { |
1440 | case 1: | |
1441 | info->io.inputb = port_inb; | |
1442 | info->io.outputb = port_outb; | |
1443 | break; | |
1444 | case 2: | |
1445 | info->io.inputb = port_inw; | |
1446 | info->io.outputb = port_outw; | |
1447 | break; | |
1448 | case 4: | |
1449 | info->io.inputb = port_inl; | |
1450 | info->io.outputb = port_outl; | |
1451 | break; | |
1452 | default: | |
279fbd0c MS |
1453 | dev_warn(info->dev, "Invalid register size: %d\n", |
1454 | info->io.regsize); | |
1da177e4 LT |
1455 | return -EINVAL; |
1456 | } | |
1457 | ||
c305e3d3 CM |
1458 | /* |
1459 | * Some BIOSes reserve disjoint I/O regions in their ACPI | |
d61a3ead CM |
1460 | * tables. This causes problems when trying to register the |
1461 | * entire I/O region. Therefore we must register each I/O | |
1462 | * port separately. | |
1463 | */ | |
c305e3d3 | 1464 | for (idx = 0; idx < info->io_size; idx++) { |
d61a3ead CM |
1465 | if (request_region(addr + idx * info->io.regspacing, |
1466 | info->io.regsize, DEVICE_NAME) == NULL) { | |
1467 | /* Undo allocations */ | |
1468 | while (idx--) { | |
1469 | release_region(addr + idx * info->io.regspacing, | |
1470 | info->io.regsize); | |
1471 | } | |
1472 | return -EIO; | |
1473 | } | |
1474 | } | |
1da177e4 LT |
1475 | return 0; |
1476 | } | |
1477 | ||
546cfdf4 | 1478 | static unsigned char intf_mem_inb(struct si_sm_io *io, unsigned int offset) |
1da177e4 LT |
1479 | { |
1480 | return readb((io->addr)+(offset * io->regspacing)); | |
1481 | } | |
1482 | ||
546cfdf4 | 1483 | static void intf_mem_outb(struct si_sm_io *io, unsigned int offset, |
1da177e4 LT |
1484 | unsigned char b) |
1485 | { | |
1486 | writeb(b, (io->addr)+(offset * io->regspacing)); | |
1487 | } | |
1488 | ||
546cfdf4 | 1489 | static unsigned char intf_mem_inw(struct si_sm_io *io, unsigned int offset) |
1da177e4 LT |
1490 | { |
1491 | return (readw((io->addr)+(offset * io->regspacing)) >> io->regshift) | |
64d9fe69 | 1492 | & 0xff; |
1da177e4 LT |
1493 | } |
1494 | ||
546cfdf4 | 1495 | static void intf_mem_outw(struct si_sm_io *io, unsigned int offset, |
1da177e4 LT |
1496 | unsigned char b) |
1497 | { | |
1498 | writeb(b << io->regshift, (io->addr)+(offset * io->regspacing)); | |
1499 | } | |
1500 | ||
546cfdf4 | 1501 | static unsigned char intf_mem_inl(struct si_sm_io *io, unsigned int offset) |
1da177e4 LT |
1502 | { |
1503 | return (readl((io->addr)+(offset * io->regspacing)) >> io->regshift) | |
64d9fe69 | 1504 | & 0xff; |
1da177e4 LT |
1505 | } |
1506 | ||
546cfdf4 | 1507 | static void intf_mem_outl(struct si_sm_io *io, unsigned int offset, |
1da177e4 LT |
1508 | unsigned char b) |
1509 | { | |
1510 | writel(b << io->regshift, (io->addr)+(offset * io->regspacing)); | |
1511 | } | |
1512 | ||
1513 | #ifdef readq | |
1514 | static unsigned char mem_inq(struct si_sm_io *io, unsigned int offset) | |
1515 | { | |
1516 | return (readq((io->addr)+(offset * io->regspacing)) >> io->regshift) | |
64d9fe69 | 1517 | & 0xff; |
1da177e4 LT |
1518 | } |
1519 | ||
1520 | static void mem_outq(struct si_sm_io *io, unsigned int offset, | |
1521 | unsigned char b) | |
1522 | { | |
1523 | writeq(b << io->regshift, (io->addr)+(offset * io->regspacing)); | |
1524 | } | |
1525 | #endif | |
1526 | ||
1527 | static void mem_cleanup(struct smi_info *info) | |
1528 | { | |
b0defcdb | 1529 | unsigned long addr = info->io.addr_data; |
1da177e4 LT |
1530 | int mapsize; |
1531 | ||
1532 | if (info->io.addr) { | |
1533 | iounmap(info->io.addr); | |
1534 | ||
1535 | mapsize = ((info->io_size * info->io.regspacing) | |
1536 | - (info->io.regspacing - info->io.regsize)); | |
1537 | ||
b0defcdb | 1538 | release_mem_region(addr, mapsize); |
1da177e4 | 1539 | } |
1da177e4 LT |
1540 | } |
1541 | ||
1542 | static int mem_setup(struct smi_info *info) | |
1543 | { | |
b0defcdb | 1544 | unsigned long addr = info->io.addr_data; |
1da177e4 LT |
1545 | int mapsize; |
1546 | ||
b0defcdb | 1547 | if (!addr) |
1da177e4 LT |
1548 | return -ENODEV; |
1549 | ||
1550 | info->io_cleanup = mem_cleanup; | |
1551 | ||
c305e3d3 CM |
1552 | /* |
1553 | * Figure out the actual readb/readw/readl/etc routine to use based | |
1554 | * upon the register size. | |
1555 | */ | |
1da177e4 LT |
1556 | switch (info->io.regsize) { |
1557 | case 1: | |
546cfdf4 AD |
1558 | info->io.inputb = intf_mem_inb; |
1559 | info->io.outputb = intf_mem_outb; | |
1da177e4 LT |
1560 | break; |
1561 | case 2: | |
546cfdf4 AD |
1562 | info->io.inputb = intf_mem_inw; |
1563 | info->io.outputb = intf_mem_outw; | |
1da177e4 LT |
1564 | break; |
1565 | case 4: | |
546cfdf4 AD |
1566 | info->io.inputb = intf_mem_inl; |
1567 | info->io.outputb = intf_mem_outl; | |
1da177e4 LT |
1568 | break; |
1569 | #ifdef readq | |
1570 | case 8: | |
1571 | info->io.inputb = mem_inq; | |
1572 | info->io.outputb = mem_outq; | |
1573 | break; | |
1574 | #endif | |
1575 | default: | |
279fbd0c MS |
1576 | dev_warn(info->dev, "Invalid register size: %d\n", |
1577 | info->io.regsize); | |
1da177e4 LT |
1578 | return -EINVAL; |
1579 | } | |
1580 | ||
c305e3d3 CM |
1581 | /* |
1582 | * Calculate the total amount of memory to claim. This is an | |
1da177e4 LT |
1583 | * unusual looking calculation, but it avoids claiming any |
1584 | * more memory than it has to. It will claim everything | |
1585 | * between the first address to the end of the last full | |
c305e3d3 CM |
1586 | * register. |
1587 | */ | |
1da177e4 LT |
1588 | mapsize = ((info->io_size * info->io.regspacing) |
1589 | - (info->io.regspacing - info->io.regsize)); | |
1590 | ||
b0defcdb | 1591 | if (request_mem_region(addr, mapsize, DEVICE_NAME) == NULL) |
1da177e4 LT |
1592 | return -EIO; |
1593 | ||
b0defcdb | 1594 | info->io.addr = ioremap(addr, mapsize); |
1da177e4 | 1595 | if (info->io.addr == NULL) { |
b0defcdb | 1596 | release_mem_region(addr, mapsize); |
1da177e4 LT |
1597 | return -EIO; |
1598 | } | |
1599 | return 0; | |
1600 | } | |
1601 | ||
b361e27b CM |
1602 | /* |
1603 | * Parms come in as <op1>[:op2[:op3...]]. ops are: | |
1604 | * add|remove,kcs|bt|smic,mem|i/o,<address>[,<opt1>[,<opt2>[,...]]] | |
1605 | * Options are: | |
1606 | * rsp=<regspacing> | |
1607 | * rsi=<regsize> | |
1608 | * rsh=<regshift> | |
1609 | * irq=<irq> | |
1610 | * ipmb=<ipmb addr> | |
1611 | */ | |
1612 | enum hotmod_op { HM_ADD, HM_REMOVE }; | |
1613 | struct hotmod_vals { | |
1614 | char *name; | |
1615 | int val; | |
1616 | }; | |
1617 | static struct hotmod_vals hotmod_ops[] = { | |
1618 | { "add", HM_ADD }, | |
1619 | { "remove", HM_REMOVE }, | |
1620 | { NULL } | |
1621 | }; | |
1622 | static struct hotmod_vals hotmod_si[] = { | |
1623 | { "kcs", SI_KCS }, | |
1624 | { "smic", SI_SMIC }, | |
1625 | { "bt", SI_BT }, | |
1626 | { NULL } | |
1627 | }; | |
1628 | static struct hotmod_vals hotmod_as[] = { | |
1629 | { "mem", IPMI_MEM_ADDR_SPACE }, | |
1630 | { "i/o", IPMI_IO_ADDR_SPACE }, | |
1631 | { NULL } | |
1632 | }; | |
1d5636cc | 1633 | |
b361e27b CM |
1634 | static int parse_str(struct hotmod_vals *v, int *val, char *name, char **curr) |
1635 | { | |
1636 | char *s; | |
1637 | int i; | |
1638 | ||
1639 | s = strchr(*curr, ','); | |
1640 | if (!s) { | |
1641 | printk(KERN_WARNING PFX "No hotmod %s given.\n", name); | |
1642 | return -EINVAL; | |
1643 | } | |
1644 | *s = '\0'; | |
1645 | s++; | |
1646 | for (i = 0; hotmod_ops[i].name; i++) { | |
1d5636cc | 1647 | if (strcmp(*curr, v[i].name) == 0) { |
b361e27b CM |
1648 | *val = v[i].val; |
1649 | *curr = s; | |
1650 | return 0; | |
1651 | } | |
1652 | } | |
1653 | ||
1654 | printk(KERN_WARNING PFX "Invalid hotmod %s '%s'\n", name, *curr); | |
1655 | return -EINVAL; | |
1656 | } | |
1657 | ||
1d5636cc CM |
1658 | static int check_hotmod_int_op(const char *curr, const char *option, |
1659 | const char *name, int *val) | |
1660 | { | |
1661 | char *n; | |
1662 | ||
1663 | if (strcmp(curr, name) == 0) { | |
1664 | if (!option) { | |
1665 | printk(KERN_WARNING PFX | |
1666 | "No option given for '%s'\n", | |
1667 | curr); | |
1668 | return -EINVAL; | |
1669 | } | |
1670 | *val = simple_strtoul(option, &n, 0); | |
1671 | if ((*n != '\0') || (*option == '\0')) { | |
1672 | printk(KERN_WARNING PFX | |
1673 | "Bad option given for '%s'\n", | |
1674 | curr); | |
1675 | return -EINVAL; | |
1676 | } | |
1677 | return 1; | |
1678 | } | |
1679 | return 0; | |
1680 | } | |
1681 | ||
de5e2ddf ED |
1682 | static struct smi_info *smi_info_alloc(void) |
1683 | { | |
1684 | struct smi_info *info = kzalloc(sizeof(*info), GFP_KERNEL); | |
1685 | ||
1686 | if (info) { | |
1687 | spin_lock_init(&info->si_lock); | |
1688 | spin_lock_init(&info->msg_lock); | |
1689 | } | |
1690 | return info; | |
1691 | } | |
1692 | ||
b361e27b CM |
1693 | static int hotmod_handler(const char *val, struct kernel_param *kp) |
1694 | { | |
1695 | char *str = kstrdup(val, GFP_KERNEL); | |
1d5636cc | 1696 | int rv; |
b361e27b CM |
1697 | char *next, *curr, *s, *n, *o; |
1698 | enum hotmod_op op; | |
1699 | enum si_type si_type; | |
1700 | int addr_space; | |
1701 | unsigned long addr; | |
1702 | int regspacing; | |
1703 | int regsize; | |
1704 | int regshift; | |
1705 | int irq; | |
1706 | int ipmb; | |
1707 | int ival; | |
1d5636cc | 1708 | int len; |
b361e27b CM |
1709 | struct smi_info *info; |
1710 | ||
1711 | if (!str) | |
1712 | return -ENOMEM; | |
1713 | ||
1714 | /* Kill any trailing spaces, as we can get a "\n" from echo. */ | |
1d5636cc CM |
1715 | len = strlen(str); |
1716 | ival = len - 1; | |
b361e27b CM |
1717 | while ((ival >= 0) && isspace(str[ival])) { |
1718 | str[ival] = '\0'; | |
1719 | ival--; | |
1720 | } | |
1721 | ||
1722 | for (curr = str; curr; curr = next) { | |
1723 | regspacing = 1; | |
1724 | regsize = 1; | |
1725 | regshift = 0; | |
1726 | irq = 0; | |
2f95d513 | 1727 | ipmb = 0; /* Choose the default if not specified */ |
b361e27b CM |
1728 | |
1729 | next = strchr(curr, ':'); | |
1730 | if (next) { | |
1731 | *next = '\0'; | |
1732 | next++; | |
1733 | } | |
1734 | ||
1735 | rv = parse_str(hotmod_ops, &ival, "operation", &curr); | |
1736 | if (rv) | |
1737 | break; | |
1738 | op = ival; | |
1739 | ||
1740 | rv = parse_str(hotmod_si, &ival, "interface type", &curr); | |
1741 | if (rv) | |
1742 | break; | |
1743 | si_type = ival; | |
1744 | ||
1745 | rv = parse_str(hotmod_as, &addr_space, "address space", &curr); | |
1746 | if (rv) | |
1747 | break; | |
1748 | ||
1749 | s = strchr(curr, ','); | |
1750 | if (s) { | |
1751 | *s = '\0'; | |
1752 | s++; | |
1753 | } | |
1754 | addr = simple_strtoul(curr, &n, 0); | |
1755 | if ((*n != '\0') || (*curr == '\0')) { | |
1756 | printk(KERN_WARNING PFX "Invalid hotmod address" | |
1757 | " '%s'\n", curr); | |
1758 | break; | |
1759 | } | |
1760 | ||
1761 | while (s) { | |
1762 | curr = s; | |
1763 | s = strchr(curr, ','); | |
1764 | if (s) { | |
1765 | *s = '\0'; | |
1766 | s++; | |
1767 | } | |
1768 | o = strchr(curr, '='); | |
1769 | if (o) { | |
1770 | *o = '\0'; | |
1771 | o++; | |
1772 | } | |
1d5636cc CM |
1773 | rv = check_hotmod_int_op(curr, o, "rsp", ®spacing); |
1774 | if (rv < 0) | |
b361e27b | 1775 | goto out; |
1d5636cc CM |
1776 | else if (rv) |
1777 | continue; | |
1778 | rv = check_hotmod_int_op(curr, o, "rsi", ®size); | |
1779 | if (rv < 0) | |
1780 | goto out; | |
1781 | else if (rv) | |
1782 | continue; | |
1783 | rv = check_hotmod_int_op(curr, o, "rsh", ®shift); | |
1784 | if (rv < 0) | |
1785 | goto out; | |
1786 | else if (rv) | |
1787 | continue; | |
1788 | rv = check_hotmod_int_op(curr, o, "irq", &irq); | |
1789 | if (rv < 0) | |
1790 | goto out; | |
1791 | else if (rv) | |
1792 | continue; | |
1793 | rv = check_hotmod_int_op(curr, o, "ipmb", &ipmb); | |
1794 | if (rv < 0) | |
1795 | goto out; | |
1796 | else if (rv) | |
1797 | continue; | |
1798 | ||
1799 | rv = -EINVAL; | |
1800 | printk(KERN_WARNING PFX | |
1801 | "Invalid hotmod option '%s'\n", | |
1802 | curr); | |
1803 | goto out; | |
b361e27b CM |
1804 | } |
1805 | ||
1806 | if (op == HM_ADD) { | |
de5e2ddf | 1807 | info = smi_info_alloc(); |
b361e27b CM |
1808 | if (!info) { |
1809 | rv = -ENOMEM; | |
1810 | goto out; | |
1811 | } | |
1812 | ||
5fedc4a2 | 1813 | info->addr_source = SI_HOTMOD; |
b361e27b CM |
1814 | info->si_type = si_type; |
1815 | info->io.addr_data = addr; | |
1816 | info->io.addr_type = addr_space; | |
1817 | if (addr_space == IPMI_MEM_ADDR_SPACE) | |
1818 | info->io_setup = mem_setup; | |
1819 | else | |
1820 | info->io_setup = port_setup; | |
1821 | ||
1822 | info->io.addr = NULL; | |
1823 | info->io.regspacing = regspacing; | |
1824 | if (!info->io.regspacing) | |
1825 | info->io.regspacing = DEFAULT_REGSPACING; | |
1826 | info->io.regsize = regsize; | |
1827 | if (!info->io.regsize) | |
1828 | info->io.regsize = DEFAULT_REGSPACING; | |
1829 | info->io.regshift = regshift; | |
1830 | info->irq = irq; | |
1831 | if (info->irq) | |
1832 | info->irq_setup = std_irq_setup; | |
1833 | info->slave_addr = ipmb; | |
1834 | ||
7faefea6 | 1835 | if (!add_smi(info)) { |
2407d77a MG |
1836 | if (try_smi_init(info)) |
1837 | cleanup_one_si(info); | |
7faefea6 YL |
1838 | } else { |
1839 | kfree(info); | |
1840 | } | |
b361e27b CM |
1841 | } else { |
1842 | /* remove */ | |
1843 | struct smi_info *e, *tmp_e; | |
1844 | ||
1845 | mutex_lock(&smi_infos_lock); | |
1846 | list_for_each_entry_safe(e, tmp_e, &smi_infos, link) { | |
1847 | if (e->io.addr_type != addr_space) | |
1848 | continue; | |
1849 | if (e->si_type != si_type) | |
1850 | continue; | |
1851 | if (e->io.addr_data == addr) | |
1852 | cleanup_one_si(e); | |
1853 | } | |
1854 | mutex_unlock(&smi_infos_lock); | |
1855 | } | |
1856 | } | |
1d5636cc | 1857 | rv = len; |
b361e27b CM |
1858 | out: |
1859 | kfree(str); | |
1860 | return rv; | |
1861 | } | |
b0defcdb | 1862 | |
60ee6d5f | 1863 | static void __devinit hardcode_find_bmc(void) |
1da177e4 | 1864 | { |
b0defcdb | 1865 | int i; |
1da177e4 LT |
1866 | struct smi_info *info; |
1867 | ||
b0defcdb CM |
1868 | for (i = 0; i < SI_MAX_PARMS; i++) { |
1869 | if (!ports[i] && !addrs[i]) | |
1870 | continue; | |
1da177e4 | 1871 | |
de5e2ddf | 1872 | info = smi_info_alloc(); |
b0defcdb CM |
1873 | if (!info) |
1874 | return; | |
1da177e4 | 1875 | |
5fedc4a2 | 1876 | info->addr_source = SI_HARDCODED; |
279fbd0c | 1877 | printk(KERN_INFO PFX "probing via hardcoded address\n"); |
1da177e4 | 1878 | |
1d5636cc | 1879 | if (!si_type[i] || strcmp(si_type[i], "kcs") == 0) { |
b0defcdb | 1880 | info->si_type = SI_KCS; |
1d5636cc | 1881 | } else if (strcmp(si_type[i], "smic") == 0) { |
b0defcdb | 1882 | info->si_type = SI_SMIC; |
1d5636cc | 1883 | } else if (strcmp(si_type[i], "bt") == 0) { |
b0defcdb CM |
1884 | info->si_type = SI_BT; |
1885 | } else { | |
279fbd0c | 1886 | printk(KERN_WARNING PFX "Interface type specified " |
b0defcdb CM |
1887 | "for interface %d, was invalid: %s\n", |
1888 | i, si_type[i]); | |
1889 | kfree(info); | |
1890 | continue; | |
1891 | } | |
1da177e4 | 1892 | |
b0defcdb CM |
1893 | if (ports[i]) { |
1894 | /* An I/O port */ | |
1895 | info->io_setup = port_setup; | |
1896 | info->io.addr_data = ports[i]; | |
1897 | info->io.addr_type = IPMI_IO_ADDR_SPACE; | |
1898 | } else if (addrs[i]) { | |
1899 | /* A memory port */ | |
1900 | info->io_setup = mem_setup; | |
1901 | info->io.addr_data = addrs[i]; | |
1902 | info->io.addr_type = IPMI_MEM_ADDR_SPACE; | |
1903 | } else { | |
279fbd0c MS |
1904 | printk(KERN_WARNING PFX "Interface type specified " |
1905 | "for interface %d, but port and address were " | |
1906 | "not set or set to zero.\n", i); | |
b0defcdb CM |
1907 | kfree(info); |
1908 | continue; | |
1909 | } | |
1da177e4 | 1910 | |
b0defcdb CM |
1911 | info->io.addr = NULL; |
1912 | info->io.regspacing = regspacings[i]; | |
1913 | if (!info->io.regspacing) | |
1914 | info->io.regspacing = DEFAULT_REGSPACING; | |
1915 | info->io.regsize = regsizes[i]; | |
1916 | if (!info->io.regsize) | |
1917 | info->io.regsize = DEFAULT_REGSPACING; | |
1918 | info->io.regshift = regshifts[i]; | |
1919 | info->irq = irqs[i]; | |
1920 | if (info->irq) | |
1921 | info->irq_setup = std_irq_setup; | |
2f95d513 | 1922 | info->slave_addr = slave_addrs[i]; |
1da177e4 | 1923 | |
7faefea6 | 1924 | if (!add_smi(info)) { |
2407d77a MG |
1925 | if (try_smi_init(info)) |
1926 | cleanup_one_si(info); | |
7faefea6 YL |
1927 | } else { |
1928 | kfree(info); | |
1929 | } | |
b0defcdb CM |
1930 | } |
1931 | } | |
1da177e4 | 1932 | |
8466361a | 1933 | #ifdef CONFIG_ACPI |
1da177e4 LT |
1934 | |
1935 | #include <linux/acpi.h> | |
1936 | ||
c305e3d3 CM |
1937 | /* |
1938 | * Once we get an ACPI failure, we don't try any more, because we go | |
1939 | * through the tables sequentially. Once we don't find a table, there | |
1940 | * are no more. | |
1941 | */ | |
0c8204b3 | 1942 | static int acpi_failure; |
1da177e4 LT |
1943 | |
1944 | /* For GPE-type interrupts. */ | |
8b6cd8ad LM |
1945 | static u32 ipmi_acpi_gpe(acpi_handle gpe_device, |
1946 | u32 gpe_number, void *context) | |
1da177e4 LT |
1947 | { |
1948 | struct smi_info *smi_info = context; | |
1949 | unsigned long flags; | |
1950 | #ifdef DEBUG_TIMING | |
1951 | struct timeval t; | |
1952 | #endif | |
1953 | ||
1954 | spin_lock_irqsave(&(smi_info->si_lock), flags); | |
1955 | ||
64959e2d | 1956 | smi_inc_stat(smi_info, interrupts); |
1da177e4 | 1957 | |
1da177e4 LT |
1958 | #ifdef DEBUG_TIMING |
1959 | do_gettimeofday(&t); | |
1960 | printk("**ACPI_GPE: %d.%9.9d\n", t.tv_sec, t.tv_usec); | |
1961 | #endif | |
1962 | smi_event_handler(smi_info, 0); | |
1da177e4 LT |
1963 | spin_unlock_irqrestore(&(smi_info->si_lock), flags); |
1964 | ||
1965 | return ACPI_INTERRUPT_HANDLED; | |
1966 | } | |
1967 | ||
b0defcdb CM |
1968 | static void acpi_gpe_irq_cleanup(struct smi_info *info) |
1969 | { | |
1970 | if (!info->irq) | |
1971 | return; | |
1972 | ||
1973 | acpi_remove_gpe_handler(NULL, info->irq, &ipmi_acpi_gpe); | |
1974 | } | |
1975 | ||
1da177e4 LT |
1976 | static int acpi_gpe_irq_setup(struct smi_info *info) |
1977 | { | |
1978 | acpi_status status; | |
1979 | ||
b0defcdb | 1980 | if (!info->irq) |
1da177e4 LT |
1981 | return 0; |
1982 | ||
1983 | /* FIXME - is level triggered right? */ | |
1984 | status = acpi_install_gpe_handler(NULL, | |
1985 | info->irq, | |
1986 | ACPI_GPE_LEVEL_TRIGGERED, | |
1987 | &ipmi_acpi_gpe, | |
1988 | info); | |
1989 | if (status != AE_OK) { | |
279fbd0c MS |
1990 | dev_warn(info->dev, "%s unable to claim ACPI GPE %d," |
1991 | " running polled\n", DEVICE_NAME, info->irq); | |
1da177e4 LT |
1992 | info->irq = 0; |
1993 | return -EINVAL; | |
1994 | } else { | |
b0defcdb | 1995 | info->irq_cleanup = acpi_gpe_irq_cleanup; |
279fbd0c | 1996 | dev_info(info->dev, "Using ACPI GPE %d\n", info->irq); |
1da177e4 LT |
1997 | return 0; |
1998 | } | |
1999 | } | |
2000 | ||
1da177e4 LT |
2001 | /* |
2002 | * Defined at | |
631dd1a8 | 2003 | * http://h21007.www2.hp.com/portal/download/files/unprot/hpspmi.pdf |
1da177e4 LT |
2004 | */ |
2005 | struct SPMITable { | |
2006 | s8 Signature[4]; | |
2007 | u32 Length; | |
2008 | u8 Revision; | |
2009 | u8 Checksum; | |
2010 | s8 OEMID[6]; | |
2011 | s8 OEMTableID[8]; | |
2012 | s8 OEMRevision[4]; | |
2013 | s8 CreatorID[4]; | |
2014 | s8 CreatorRevision[4]; | |
2015 | u8 InterfaceType; | |
2016 | u8 IPMIlegacy; | |
2017 | s16 SpecificationRevision; | |
2018 | ||
2019 | /* | |
2020 | * Bit 0 - SCI interrupt supported | |
2021 | * Bit 1 - I/O APIC/SAPIC | |
2022 | */ | |
2023 | u8 InterruptType; | |
2024 | ||
c305e3d3 CM |
2025 | /* |
2026 | * If bit 0 of InterruptType is set, then this is the SCI | |
2027 | * interrupt in the GPEx_STS register. | |
2028 | */ | |
1da177e4 LT |
2029 | u8 GPE; |
2030 | ||
2031 | s16 Reserved; | |
2032 | ||
c305e3d3 CM |
2033 | /* |
2034 | * If bit 1 of InterruptType is set, then this is the I/O | |
2035 | * APIC/SAPIC interrupt. | |
2036 | */ | |
1da177e4 LT |
2037 | u32 GlobalSystemInterrupt; |
2038 | ||
2039 | /* The actual register address. */ | |
2040 | struct acpi_generic_address addr; | |
2041 | ||
2042 | u8 UID[4]; | |
2043 | ||
2044 | s8 spmi_id[1]; /* A '\0' terminated array starts here. */ | |
2045 | }; | |
2046 | ||
60ee6d5f | 2047 | static int __devinit try_init_spmi(struct SPMITable *spmi) |
1da177e4 LT |
2048 | { |
2049 | struct smi_info *info; | |
1da177e4 | 2050 | |
1da177e4 | 2051 | if (spmi->IPMIlegacy != 1) { |
279fbd0c MS |
2052 | printk(KERN_INFO PFX "Bad SPMI legacy %d\n", spmi->IPMIlegacy); |
2053 | return -ENODEV; | |
1da177e4 LT |
2054 | } |
2055 | ||
de5e2ddf | 2056 | info = smi_info_alloc(); |
b0defcdb | 2057 | if (!info) { |
279fbd0c | 2058 | printk(KERN_ERR PFX "Could not allocate SI data (3)\n"); |
b0defcdb CM |
2059 | return -ENOMEM; |
2060 | } | |
2061 | ||
5fedc4a2 | 2062 | info->addr_source = SI_SPMI; |
279fbd0c | 2063 | printk(KERN_INFO PFX "probing via SPMI\n"); |
1da177e4 | 2064 | |
1da177e4 | 2065 | /* Figure out the interface type. */ |
c305e3d3 | 2066 | switch (spmi->InterfaceType) { |
1da177e4 | 2067 | case 1: /* KCS */ |
b0defcdb | 2068 | info->si_type = SI_KCS; |
1da177e4 | 2069 | break; |
1da177e4 | 2070 | case 2: /* SMIC */ |
b0defcdb | 2071 | info->si_type = SI_SMIC; |
1da177e4 | 2072 | break; |
1da177e4 | 2073 | case 3: /* BT */ |
b0defcdb | 2074 | info->si_type = SI_BT; |
1da177e4 | 2075 | break; |
1da177e4 | 2076 | default: |
279fbd0c MS |
2077 | printk(KERN_INFO PFX "Unknown ACPI/SPMI SI type %d\n", |
2078 | spmi->InterfaceType); | |
b0defcdb | 2079 | kfree(info); |
1da177e4 LT |
2080 | return -EIO; |
2081 | } | |
2082 | ||
1da177e4 LT |
2083 | if (spmi->InterruptType & 1) { |
2084 | /* We've got a GPE interrupt. */ | |
2085 | info->irq = spmi->GPE; | |
2086 | info->irq_setup = acpi_gpe_irq_setup; | |
1da177e4 LT |
2087 | } else if (spmi->InterruptType & 2) { |
2088 | /* We've got an APIC/SAPIC interrupt. */ | |
2089 | info->irq = spmi->GlobalSystemInterrupt; | |
2090 | info->irq_setup = std_irq_setup; | |
1da177e4 LT |
2091 | } else { |
2092 | /* Use the default interrupt setting. */ | |
2093 | info->irq = 0; | |
2094 | info->irq_setup = NULL; | |
2095 | } | |
2096 | ||
15a58ed1 | 2097 | if (spmi->addr.bit_width) { |
35bc37a0 | 2098 | /* A (hopefully) properly formed register bit width. */ |
15a58ed1 | 2099 | info->io.regspacing = spmi->addr.bit_width / 8; |
35bc37a0 | 2100 | } else { |
35bc37a0 CM |
2101 | info->io.regspacing = DEFAULT_REGSPACING; |
2102 | } | |
b0defcdb | 2103 | info->io.regsize = info->io.regspacing; |
15a58ed1 | 2104 | info->io.regshift = spmi->addr.bit_offset; |
1da177e4 | 2105 | |
15a58ed1 | 2106 | if (spmi->addr.space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) { |
1da177e4 | 2107 | info->io_setup = mem_setup; |
8fe1425a | 2108 | info->io.addr_type = IPMI_MEM_ADDR_SPACE; |
15a58ed1 | 2109 | } else if (spmi->addr.space_id == ACPI_ADR_SPACE_SYSTEM_IO) { |
1da177e4 | 2110 | info->io_setup = port_setup; |
8fe1425a | 2111 | info->io.addr_type = IPMI_IO_ADDR_SPACE; |
1da177e4 LT |
2112 | } else { |
2113 | kfree(info); | |
279fbd0c | 2114 | printk(KERN_WARNING PFX "Unknown ACPI I/O Address type\n"); |
1da177e4 LT |
2115 | return -EIO; |
2116 | } | |
b0defcdb | 2117 | info->io.addr_data = spmi->addr.address; |
1da177e4 | 2118 | |
7bb671e3 YL |
2119 | pr_info("ipmi_si: SPMI: %s %#lx regsize %d spacing %d irq %d\n", |
2120 | (info->io.addr_type == IPMI_IO_ADDR_SPACE) ? "io" : "mem", | |
2121 | info->io.addr_data, info->io.regsize, info->io.regspacing, | |
2122 | info->irq); | |
2123 | ||
7faefea6 YL |
2124 | if (add_smi(info)) |
2125 | kfree(info); | |
1da177e4 | 2126 | |
1da177e4 LT |
2127 | return 0; |
2128 | } | |
b0defcdb | 2129 | |
60ee6d5f | 2130 | static void __devinit spmi_find_bmc(void) |
b0defcdb CM |
2131 | { |
2132 | acpi_status status; | |
2133 | struct SPMITable *spmi; | |
2134 | int i; | |
2135 | ||
2136 | if (acpi_disabled) | |
2137 | return; | |
2138 | ||
2139 | if (acpi_failure) | |
2140 | return; | |
2141 | ||
2142 | for (i = 0; ; i++) { | |
15a58ed1 AS |
2143 | status = acpi_get_table(ACPI_SIG_SPMI, i+1, |
2144 | (struct acpi_table_header **)&spmi); | |
b0defcdb CM |
2145 | if (status != AE_OK) |
2146 | return; | |
2147 | ||
18a3e0bf | 2148 | try_init_spmi(spmi); |
b0defcdb CM |
2149 | } |
2150 | } | |
9e368fa0 BH |
2151 | |
2152 | static int __devinit ipmi_pnp_probe(struct pnp_dev *dev, | |
2153 | const struct pnp_device_id *dev_id) | |
2154 | { | |
2155 | struct acpi_device *acpi_dev; | |
2156 | struct smi_info *info; | |
a9e31765 | 2157 | struct resource *res, *res_second; |
9e368fa0 BH |
2158 | acpi_handle handle; |
2159 | acpi_status status; | |
2160 | unsigned long long tmp; | |
2161 | ||
2162 | acpi_dev = pnp_acpi_device(dev); | |
2163 | if (!acpi_dev) | |
2164 | return -ENODEV; | |
2165 | ||
de5e2ddf | 2166 | info = smi_info_alloc(); |
9e368fa0 BH |
2167 | if (!info) |
2168 | return -ENOMEM; | |
2169 | ||
5fedc4a2 | 2170 | info->addr_source = SI_ACPI; |
279fbd0c | 2171 | printk(KERN_INFO PFX "probing via ACPI\n"); |
9e368fa0 BH |
2172 | |
2173 | handle = acpi_dev->handle; | |
16f4232c | 2174 | info->addr_info.acpi_info.acpi_handle = handle; |
9e368fa0 BH |
2175 | |
2176 | /* _IFT tells us the interface type: KCS, BT, etc */ | |
2177 | status = acpi_evaluate_integer(handle, "_IFT", NULL, &tmp); | |
2178 | if (ACPI_FAILURE(status)) | |
2179 | goto err_free; | |
2180 | ||
2181 | switch (tmp) { | |
2182 | case 1: | |
2183 | info->si_type = SI_KCS; | |
2184 | break; | |
2185 | case 2: | |
2186 | info->si_type = SI_SMIC; | |
2187 | break; | |
2188 | case 3: | |
2189 | info->si_type = SI_BT; | |
2190 | break; | |
2191 | default: | |
279fbd0c | 2192 | dev_info(&dev->dev, "unknown IPMI type %lld\n", tmp); |
9e368fa0 BH |
2193 | goto err_free; |
2194 | } | |
2195 | ||
279fbd0c MS |
2196 | res = pnp_get_resource(dev, IORESOURCE_IO, 0); |
2197 | if (res) { | |
9e368fa0 BH |
2198 | info->io_setup = port_setup; |
2199 | info->io.addr_type = IPMI_IO_ADDR_SPACE; | |
9e368fa0 | 2200 | } else { |
279fbd0c MS |
2201 | res = pnp_get_resource(dev, IORESOURCE_MEM, 0); |
2202 | if (res) { | |
2203 | info->io_setup = mem_setup; | |
2204 | info->io.addr_type = IPMI_MEM_ADDR_SPACE; | |
2205 | } | |
2206 | } | |
2207 | if (!res) { | |
9e368fa0 BH |
2208 | dev_err(&dev->dev, "no I/O or memory address\n"); |
2209 | goto err_free; | |
2210 | } | |
279fbd0c | 2211 | info->io.addr_data = res->start; |
9e368fa0 BH |
2212 | |
2213 | info->io.regspacing = DEFAULT_REGSPACING; | |
a9e31765 | 2214 | res_second = pnp_get_resource(dev, |
d9e1b6c4 YL |
2215 | (info->io.addr_type == IPMI_IO_ADDR_SPACE) ? |
2216 | IORESOURCE_IO : IORESOURCE_MEM, | |
2217 | 1); | |
a9e31765 YL |
2218 | if (res_second) { |
2219 | if (res_second->start > info->io.addr_data) | |
2220 | info->io.regspacing = res_second->start - info->io.addr_data; | |
d9e1b6c4 | 2221 | } |
9e368fa0 BH |
2222 | info->io.regsize = DEFAULT_REGSPACING; |
2223 | info->io.regshift = 0; | |
2224 | ||
2225 | /* If _GPE exists, use it; otherwise use standard interrupts */ | |
2226 | status = acpi_evaluate_integer(handle, "_GPE", NULL, &tmp); | |
2227 | if (ACPI_SUCCESS(status)) { | |
2228 | info->irq = tmp; | |
2229 | info->irq_setup = acpi_gpe_irq_setup; | |
2230 | } else if (pnp_irq_valid(dev, 0)) { | |
2231 | info->irq = pnp_irq(dev, 0); | |
2232 | info->irq_setup = std_irq_setup; | |
2233 | } | |
2234 | ||
8c8eae27 | 2235 | info->dev = &dev->dev; |
9e368fa0 BH |
2236 | pnp_set_drvdata(dev, info); |
2237 | ||
279fbd0c MS |
2238 | dev_info(info->dev, "%pR regsize %d spacing %d irq %d\n", |
2239 | res, info->io.regsize, info->io.regspacing, | |
2240 | info->irq); | |
2241 | ||
7faefea6 YL |
2242 | if (add_smi(info)) |
2243 | goto err_free; | |
2244 | ||
2245 | return 0; | |
9e368fa0 BH |
2246 | |
2247 | err_free: | |
2248 | kfree(info); | |
2249 | return -EINVAL; | |
2250 | } | |
2251 | ||
2252 | static void __devexit ipmi_pnp_remove(struct pnp_dev *dev) | |
2253 | { | |
2254 | struct smi_info *info = pnp_get_drvdata(dev); | |
2255 | ||
2256 | cleanup_one_si(info); | |
2257 | } | |
2258 | ||
2259 | static const struct pnp_device_id pnp_dev_table[] = { | |
2260 | {"IPI0001", 0}, | |
2261 | {"", 0}, | |
2262 | }; | |
2263 | ||
2264 | static struct pnp_driver ipmi_pnp_driver = { | |
2265 | .name = DEVICE_NAME, | |
2266 | .probe = ipmi_pnp_probe, | |
2267 | .remove = __devexit_p(ipmi_pnp_remove), | |
2268 | .id_table = pnp_dev_table, | |
2269 | }; | |
1da177e4 LT |
2270 | #endif |
2271 | ||
a9fad4cc | 2272 | #ifdef CONFIG_DMI |
c305e3d3 | 2273 | struct dmi_ipmi_data { |
1da177e4 LT |
2274 | u8 type; |
2275 | u8 addr_space; | |
2276 | unsigned long base_addr; | |
2277 | u8 irq; | |
2278 | u8 offset; | |
2279 | u8 slave_addr; | |
b0defcdb | 2280 | }; |
1da177e4 | 2281 | |
1855256c | 2282 | static int __devinit decode_dmi(const struct dmi_header *dm, |
b0defcdb | 2283 | struct dmi_ipmi_data *dmi) |
1da177e4 | 2284 | { |
1855256c | 2285 | const u8 *data = (const u8 *)dm; |
1da177e4 LT |
2286 | unsigned long base_addr; |
2287 | u8 reg_spacing; | |
b224cd3a | 2288 | u8 len = dm->length; |
1da177e4 | 2289 | |
b0defcdb | 2290 | dmi->type = data[4]; |
1da177e4 LT |
2291 | |
2292 | memcpy(&base_addr, data+8, sizeof(unsigned long)); | |
2293 | if (len >= 0x11) { | |
2294 | if (base_addr & 1) { | |
2295 | /* I/O */ | |
2296 | base_addr &= 0xFFFE; | |
b0defcdb | 2297 | dmi->addr_space = IPMI_IO_ADDR_SPACE; |
c305e3d3 | 2298 | } else |
1da177e4 | 2299 | /* Memory */ |
b0defcdb | 2300 | dmi->addr_space = IPMI_MEM_ADDR_SPACE; |
c305e3d3 | 2301 | |
1da177e4 LT |
2302 | /* If bit 4 of byte 0x10 is set, then the lsb for the address |
2303 | is odd. */ | |
b0defcdb | 2304 | dmi->base_addr = base_addr | ((data[0x10] & 0x10) >> 4); |
1da177e4 | 2305 | |
b0defcdb | 2306 | dmi->irq = data[0x11]; |
1da177e4 LT |
2307 | |
2308 | /* The top two bits of byte 0x10 hold the register spacing. */ | |
b224cd3a | 2309 | reg_spacing = (data[0x10] & 0xC0) >> 6; |
c305e3d3 | 2310 | switch (reg_spacing) { |
1da177e4 | 2311 | case 0x00: /* Byte boundaries */ |
b0defcdb | 2312 | dmi->offset = 1; |
1da177e4 LT |
2313 | break; |
2314 | case 0x01: /* 32-bit boundaries */ | |
b0defcdb | 2315 | dmi->offset = 4; |
1da177e4 LT |
2316 | break; |
2317 | case 0x02: /* 16-byte boundaries */ | |
b0defcdb | 2318 | dmi->offset = 16; |
1da177e4 LT |
2319 | break; |
2320 | default: | |
2321 | /* Some other interface, just ignore it. */ | |
2322 | return -EIO; | |
2323 | } | |
2324 | } else { | |
2325 | /* Old DMI spec. */ | |
c305e3d3 CM |
2326 | /* |
2327 | * Note that technically, the lower bit of the base | |
92068801 CM |
2328 | * address should be 1 if the address is I/O and 0 if |
2329 | * the address is in memory. So many systems get that | |
2330 | * wrong (and all that I have seen are I/O) so we just | |
2331 | * ignore that bit and assume I/O. Systems that use | |
c305e3d3 CM |
2332 | * memory should use the newer spec, anyway. |
2333 | */ | |
b0defcdb CM |
2334 | dmi->base_addr = base_addr & 0xfffe; |
2335 | dmi->addr_space = IPMI_IO_ADDR_SPACE; | |
2336 | dmi->offset = 1; | |
1da177e4 LT |
2337 | } |
2338 | ||
b0defcdb | 2339 | dmi->slave_addr = data[6]; |
1da177e4 | 2340 | |
b0defcdb | 2341 | return 0; |
1da177e4 LT |
2342 | } |
2343 | ||
60ee6d5f | 2344 | static void __devinit try_init_dmi(struct dmi_ipmi_data *ipmi_data) |
1da177e4 | 2345 | { |
b0defcdb | 2346 | struct smi_info *info; |
1da177e4 | 2347 | |
de5e2ddf | 2348 | info = smi_info_alloc(); |
b0defcdb | 2349 | if (!info) { |
279fbd0c | 2350 | printk(KERN_ERR PFX "Could not allocate SI data\n"); |
b0defcdb | 2351 | return; |
1da177e4 | 2352 | } |
1da177e4 | 2353 | |
5fedc4a2 | 2354 | info->addr_source = SI_SMBIOS; |
279fbd0c | 2355 | printk(KERN_INFO PFX "probing via SMBIOS\n"); |
1da177e4 | 2356 | |
e8b33617 | 2357 | switch (ipmi_data->type) { |
b0defcdb CM |
2358 | case 0x01: /* KCS */ |
2359 | info->si_type = SI_KCS; | |
2360 | break; | |
2361 | case 0x02: /* SMIC */ | |
2362 | info->si_type = SI_SMIC; | |
2363 | break; | |
2364 | case 0x03: /* BT */ | |
2365 | info->si_type = SI_BT; | |
2366 | break; | |
2367 | default: | |
80cd6920 | 2368 | kfree(info); |
b0defcdb | 2369 | return; |
1da177e4 | 2370 | } |
1da177e4 | 2371 | |
b0defcdb CM |
2372 | switch (ipmi_data->addr_space) { |
2373 | case IPMI_MEM_ADDR_SPACE: | |
1da177e4 | 2374 | info->io_setup = mem_setup; |
b0defcdb CM |
2375 | info->io.addr_type = IPMI_MEM_ADDR_SPACE; |
2376 | break; | |
2377 | ||
2378 | case IPMI_IO_ADDR_SPACE: | |
1da177e4 | 2379 | info->io_setup = port_setup; |
b0defcdb CM |
2380 | info->io.addr_type = IPMI_IO_ADDR_SPACE; |
2381 | break; | |
2382 | ||
2383 | default: | |
1da177e4 | 2384 | kfree(info); |
279fbd0c | 2385 | printk(KERN_WARNING PFX "Unknown SMBIOS I/O Address type: %d\n", |
b0defcdb CM |
2386 | ipmi_data->addr_space); |
2387 | return; | |
1da177e4 | 2388 | } |
b0defcdb | 2389 | info->io.addr_data = ipmi_data->base_addr; |
1da177e4 | 2390 | |
b0defcdb CM |
2391 | info->io.regspacing = ipmi_data->offset; |
2392 | if (!info->io.regspacing) | |
1da177e4 LT |
2393 | info->io.regspacing = DEFAULT_REGSPACING; |
2394 | info->io.regsize = DEFAULT_REGSPACING; | |
b0defcdb | 2395 | info->io.regshift = 0; |
1da177e4 LT |
2396 | |
2397 | info->slave_addr = ipmi_data->slave_addr; | |
2398 | ||
b0defcdb CM |
2399 | info->irq = ipmi_data->irq; |
2400 | if (info->irq) | |
2401 | info->irq_setup = std_irq_setup; | |
1da177e4 | 2402 | |
7bb671e3 YL |
2403 | pr_info("ipmi_si: SMBIOS: %s %#lx regsize %d spacing %d irq %d\n", |
2404 | (info->io.addr_type == IPMI_IO_ADDR_SPACE) ? "io" : "mem", | |
2405 | info->io.addr_data, info->io.regsize, info->io.regspacing, | |
2406 | info->irq); | |
2407 | ||
7faefea6 YL |
2408 | if (add_smi(info)) |
2409 | kfree(info); | |
b0defcdb | 2410 | } |
1da177e4 | 2411 | |
b0defcdb CM |
2412 | static void __devinit dmi_find_bmc(void) |
2413 | { | |
1855256c | 2414 | const struct dmi_device *dev = NULL; |
b0defcdb CM |
2415 | struct dmi_ipmi_data data; |
2416 | int rv; | |
2417 | ||
2418 | while ((dev = dmi_find_device(DMI_DEV_TYPE_IPMI, NULL, dev))) { | |
397f4ebf | 2419 | memset(&data, 0, sizeof(data)); |
1855256c JG |
2420 | rv = decode_dmi((const struct dmi_header *) dev->device_data, |
2421 | &data); | |
b0defcdb CM |
2422 | if (!rv) |
2423 | try_init_dmi(&data); | |
2424 | } | |
1da177e4 | 2425 | } |
a9fad4cc | 2426 | #endif /* CONFIG_DMI */ |
1da177e4 LT |
2427 | |
2428 | #ifdef CONFIG_PCI | |
2429 | ||
b0defcdb CM |
2430 | #define PCI_ERMC_CLASSCODE 0x0C0700 |
2431 | #define PCI_ERMC_CLASSCODE_MASK 0xffffff00 | |
2432 | #define PCI_ERMC_CLASSCODE_TYPE_MASK 0xff | |
2433 | #define PCI_ERMC_CLASSCODE_TYPE_SMIC 0x00 | |
2434 | #define PCI_ERMC_CLASSCODE_TYPE_KCS 0x01 | |
2435 | #define PCI_ERMC_CLASSCODE_TYPE_BT 0x02 | |
2436 | ||
1da177e4 LT |
2437 | #define PCI_HP_VENDOR_ID 0x103C |
2438 | #define PCI_MMC_DEVICE_ID 0x121A | |
2439 | #define PCI_MMC_ADDR_CW 0x10 | |
2440 | ||
b0defcdb CM |
2441 | static void ipmi_pci_cleanup(struct smi_info *info) |
2442 | { | |
2443 | struct pci_dev *pdev = info->addr_source_data; | |
2444 | ||
2445 | pci_disable_device(pdev); | |
2446 | } | |
1da177e4 | 2447 | |
b0defcdb CM |
2448 | static int __devinit ipmi_pci_probe(struct pci_dev *pdev, |
2449 | const struct pci_device_id *ent) | |
1da177e4 | 2450 | { |
b0defcdb CM |
2451 | int rv; |
2452 | int class_type = pdev->class & PCI_ERMC_CLASSCODE_TYPE_MASK; | |
2453 | struct smi_info *info; | |
1da177e4 | 2454 | |
de5e2ddf | 2455 | info = smi_info_alloc(); |
b0defcdb | 2456 | if (!info) |
1cd441f9 | 2457 | return -ENOMEM; |
1da177e4 | 2458 | |
5fedc4a2 | 2459 | info->addr_source = SI_PCI; |
279fbd0c | 2460 | dev_info(&pdev->dev, "probing via PCI"); |
1da177e4 | 2461 | |
b0defcdb CM |
2462 | switch (class_type) { |
2463 | case PCI_ERMC_CLASSCODE_TYPE_SMIC: | |
2464 | info->si_type = SI_SMIC; | |
2465 | break; | |
1da177e4 | 2466 | |
b0defcdb CM |
2467 | case PCI_ERMC_CLASSCODE_TYPE_KCS: |
2468 | info->si_type = SI_KCS; | |
2469 | break; | |
2470 | ||
2471 | case PCI_ERMC_CLASSCODE_TYPE_BT: | |
2472 | info->si_type = SI_BT; | |
2473 | break; | |
2474 | ||
2475 | default: | |
2476 | kfree(info); | |
279fbd0c | 2477 | dev_info(&pdev->dev, "Unknown IPMI type: %d\n", class_type); |
1cd441f9 | 2478 | return -ENOMEM; |
1da177e4 LT |
2479 | } |
2480 | ||
b0defcdb CM |
2481 | rv = pci_enable_device(pdev); |
2482 | if (rv) { | |
279fbd0c | 2483 | dev_err(&pdev->dev, "couldn't enable PCI device\n"); |
b0defcdb CM |
2484 | kfree(info); |
2485 | return rv; | |
1da177e4 LT |
2486 | } |
2487 | ||
b0defcdb CM |
2488 | info->addr_source_cleanup = ipmi_pci_cleanup; |
2489 | info->addr_source_data = pdev; | |
1da177e4 | 2490 | |
b0defcdb CM |
2491 | if (pci_resource_flags(pdev, 0) & IORESOURCE_IO) { |
2492 | info->io_setup = port_setup; | |
2493 | info->io.addr_type = IPMI_IO_ADDR_SPACE; | |
2494 | } else { | |
2495 | info->io_setup = mem_setup; | |
2496 | info->io.addr_type = IPMI_MEM_ADDR_SPACE; | |
1da177e4 | 2497 | } |
b0defcdb | 2498 | info->io.addr_data = pci_resource_start(pdev, 0); |
1da177e4 | 2499 | |
b0defcdb | 2500 | info->io.regspacing = DEFAULT_REGSPACING; |
1da177e4 | 2501 | info->io.regsize = DEFAULT_REGSPACING; |
b0defcdb | 2502 | info->io.regshift = 0; |
1da177e4 | 2503 | |
b0defcdb CM |
2504 | info->irq = pdev->irq; |
2505 | if (info->irq) | |
2506 | info->irq_setup = std_irq_setup; | |
1da177e4 | 2507 | |
50c812b2 | 2508 | info->dev = &pdev->dev; |
fca3b747 | 2509 | pci_set_drvdata(pdev, info); |
50c812b2 | 2510 | |
279fbd0c MS |
2511 | dev_info(&pdev->dev, "%pR regsize %d spacing %d irq %d\n", |
2512 | &pdev->resource[0], info->io.regsize, info->io.regspacing, | |
2513 | info->irq); | |
2514 | ||
7faefea6 YL |
2515 | if (add_smi(info)) |
2516 | kfree(info); | |
2517 | ||
2518 | return 0; | |
b0defcdb | 2519 | } |
1da177e4 | 2520 | |
b0defcdb CM |
2521 | static void __devexit ipmi_pci_remove(struct pci_dev *pdev) |
2522 | { | |
fca3b747 CM |
2523 | struct smi_info *info = pci_get_drvdata(pdev); |
2524 | cleanup_one_si(info); | |
b0defcdb | 2525 | } |
1da177e4 | 2526 | |
b0defcdb CM |
2527 | #ifdef CONFIG_PM |
2528 | static int ipmi_pci_suspend(struct pci_dev *pdev, pm_message_t state) | |
2529 | { | |
1da177e4 LT |
2530 | return 0; |
2531 | } | |
1da177e4 | 2532 | |
b0defcdb | 2533 | static int ipmi_pci_resume(struct pci_dev *pdev) |
1da177e4 | 2534 | { |
b0defcdb CM |
2535 | return 0; |
2536 | } | |
1da177e4 | 2537 | #endif |
1da177e4 | 2538 | |
b0defcdb CM |
2539 | static struct pci_device_id ipmi_pci_devices[] = { |
2540 | { PCI_DEVICE(PCI_HP_VENDOR_ID, PCI_MMC_DEVICE_ID) }, | |
248bdd5e KC |
2541 | { PCI_DEVICE_CLASS(PCI_ERMC_CLASSCODE, PCI_ERMC_CLASSCODE_MASK) }, |
2542 | { 0, } | |
b0defcdb CM |
2543 | }; |
2544 | MODULE_DEVICE_TABLE(pci, ipmi_pci_devices); | |
2545 | ||
2546 | static struct pci_driver ipmi_pci_driver = { | |
c305e3d3 CM |
2547 | .name = DEVICE_NAME, |
2548 | .id_table = ipmi_pci_devices, | |
2549 | .probe = ipmi_pci_probe, | |
2550 | .remove = __devexit_p(ipmi_pci_remove), | |
b0defcdb | 2551 | #ifdef CONFIG_PM |
c305e3d3 CM |
2552 | .suspend = ipmi_pci_suspend, |
2553 | .resume = ipmi_pci_resume, | |
b0defcdb CM |
2554 | #endif |
2555 | }; | |
2556 | #endif /* CONFIG_PCI */ | |
1da177e4 LT |
2557 | |
2558 | ||
dba9b4f6 | 2559 | #ifdef CONFIG_PPC_OF |
2dc11581 | 2560 | static int __devinit ipmi_of_probe(struct platform_device *dev, |
dba9b4f6 CM |
2561 | const struct of_device_id *match) |
2562 | { | |
2563 | struct smi_info *info; | |
2564 | struct resource resource; | |
da81c3b9 | 2565 | const __be32 *regsize, *regspacing, *regshift; |
61c7a080 | 2566 | struct device_node *np = dev->dev.of_node; |
dba9b4f6 CM |
2567 | int ret; |
2568 | int proplen; | |
2569 | ||
279fbd0c | 2570 | dev_info(&dev->dev, "probing via device tree\n"); |
dba9b4f6 CM |
2571 | |
2572 | ret = of_address_to_resource(np, 0, &resource); | |
2573 | if (ret) { | |
2574 | dev_warn(&dev->dev, PFX "invalid address from OF\n"); | |
2575 | return ret; | |
2576 | } | |
2577 | ||
9c25099d | 2578 | regsize = of_get_property(np, "reg-size", &proplen); |
dba9b4f6 CM |
2579 | if (regsize && proplen != 4) { |
2580 | dev_warn(&dev->dev, PFX "invalid regsize from OF\n"); | |
2581 | return -EINVAL; | |
2582 | } | |
2583 | ||
9c25099d | 2584 | regspacing = of_get_property(np, "reg-spacing", &proplen); |
dba9b4f6 CM |
2585 | if (regspacing && proplen != 4) { |
2586 | dev_warn(&dev->dev, PFX "invalid regspacing from OF\n"); | |
2587 | return -EINVAL; | |
2588 | } | |
2589 | ||
9c25099d | 2590 | regshift = of_get_property(np, "reg-shift", &proplen); |
dba9b4f6 CM |
2591 | if (regshift && proplen != 4) { |
2592 | dev_warn(&dev->dev, PFX "invalid regshift from OF\n"); | |
2593 | return -EINVAL; | |
2594 | } | |
2595 | ||
de5e2ddf | 2596 | info = smi_info_alloc(); |
dba9b4f6 CM |
2597 | |
2598 | if (!info) { | |
2599 | dev_err(&dev->dev, | |
279fbd0c | 2600 | "could not allocate memory for OF probe\n"); |
dba9b4f6 CM |
2601 | return -ENOMEM; |
2602 | } | |
2603 | ||
2604 | info->si_type = (enum si_type) match->data; | |
5fedc4a2 | 2605 | info->addr_source = SI_DEVICETREE; |
dba9b4f6 CM |
2606 | info->irq_setup = std_irq_setup; |
2607 | ||
3b7ec117 NC |
2608 | if (resource.flags & IORESOURCE_IO) { |
2609 | info->io_setup = port_setup; | |
2610 | info->io.addr_type = IPMI_IO_ADDR_SPACE; | |
2611 | } else { | |
2612 | info->io_setup = mem_setup; | |
2613 | info->io.addr_type = IPMI_MEM_ADDR_SPACE; | |
2614 | } | |
2615 | ||
dba9b4f6 CM |
2616 | info->io.addr_data = resource.start; |
2617 | ||
da81c3b9 RH |
2618 | info->io.regsize = regsize ? be32_to_cpup(regsize) : DEFAULT_REGSIZE; |
2619 | info->io.regspacing = regspacing ? be32_to_cpup(regspacing) : DEFAULT_REGSPACING; | |
2620 | info->io.regshift = regshift ? be32_to_cpup(regshift) : 0; | |
dba9b4f6 | 2621 | |
61c7a080 | 2622 | info->irq = irq_of_parse_and_map(dev->dev.of_node, 0); |
dba9b4f6 CM |
2623 | info->dev = &dev->dev; |
2624 | ||
279fbd0c | 2625 | dev_dbg(&dev->dev, "addr 0x%lx regsize %d spacing %d irq %d\n", |
dba9b4f6 CM |
2626 | info->io.addr_data, info->io.regsize, info->io.regspacing, |
2627 | info->irq); | |
2628 | ||
9de33df4 | 2629 | dev_set_drvdata(&dev->dev, info); |
dba9b4f6 | 2630 | |
7faefea6 YL |
2631 | if (add_smi(info)) { |
2632 | kfree(info); | |
2633 | return -EBUSY; | |
2634 | } | |
2635 | ||
2636 | return 0; | |
dba9b4f6 CM |
2637 | } |
2638 | ||
2dc11581 | 2639 | static int __devexit ipmi_of_remove(struct platform_device *dev) |
dba9b4f6 | 2640 | { |
9de33df4 | 2641 | cleanup_one_si(dev_get_drvdata(&dev->dev)); |
dba9b4f6 CM |
2642 | return 0; |
2643 | } | |
2644 | ||
2645 | static struct of_device_id ipmi_match[] = | |
2646 | { | |
c305e3d3 CM |
2647 | { .type = "ipmi", .compatible = "ipmi-kcs", |
2648 | .data = (void *)(unsigned long) SI_KCS }, | |
2649 | { .type = "ipmi", .compatible = "ipmi-smic", | |
2650 | .data = (void *)(unsigned long) SI_SMIC }, | |
2651 | { .type = "ipmi", .compatible = "ipmi-bt", | |
2652 | .data = (void *)(unsigned long) SI_BT }, | |
dba9b4f6 CM |
2653 | {}, |
2654 | }; | |
2655 | ||
c305e3d3 | 2656 | static struct of_platform_driver ipmi_of_platform_driver = { |
4018294b GL |
2657 | .driver = { |
2658 | .name = "ipmi", | |
2659 | .owner = THIS_MODULE, | |
2660 | .of_match_table = ipmi_match, | |
2661 | }, | |
dba9b4f6 CM |
2662 | .probe = ipmi_of_probe, |
2663 | .remove = __devexit_p(ipmi_of_remove), | |
2664 | }; | |
2665 | #endif /* CONFIG_PPC_OF */ | |
2666 | ||
40112ae7 | 2667 | static int wait_for_msg_done(struct smi_info *smi_info) |
1da177e4 | 2668 | { |
50c812b2 | 2669 | enum si_sm_result smi_result; |
1da177e4 LT |
2670 | |
2671 | smi_result = smi_info->handlers->event(smi_info->si_sm, 0); | |
c305e3d3 | 2672 | for (;;) { |
c3e7e791 CM |
2673 | if (smi_result == SI_SM_CALL_WITH_DELAY || |
2674 | smi_result == SI_SM_CALL_WITH_TICK_DELAY) { | |
da4cd8df | 2675 | schedule_timeout_uninterruptible(1); |
1da177e4 LT |
2676 | smi_result = smi_info->handlers->event( |
2677 | smi_info->si_sm, 100); | |
c305e3d3 | 2678 | } else if (smi_result == SI_SM_CALL_WITHOUT_DELAY) { |
1da177e4 LT |
2679 | smi_result = smi_info->handlers->event( |
2680 | smi_info->si_sm, 0); | |
c305e3d3 | 2681 | } else |
1da177e4 LT |
2682 | break; |
2683 | } | |
40112ae7 | 2684 | if (smi_result == SI_SM_HOSED) |
c305e3d3 CM |
2685 | /* |
2686 | * We couldn't get the state machine to run, so whatever's at | |
2687 | * the port is probably not an IPMI SMI interface. | |
2688 | */ | |
40112ae7 CM |
2689 | return -ENODEV; |
2690 | ||
2691 | return 0; | |
2692 | } | |
2693 | ||
2694 | static int try_get_dev_id(struct smi_info *smi_info) | |
2695 | { | |
2696 | unsigned char msg[2]; | |
2697 | unsigned char *resp; | |
2698 | unsigned long resp_len; | |
2699 | int rv = 0; | |
2700 | ||
2701 | resp = kmalloc(IPMI_MAX_MSG_LENGTH, GFP_KERNEL); | |
2702 | if (!resp) | |
2703 | return -ENOMEM; | |
2704 | ||
2705 | /* | |
2706 | * Do a Get Device ID command, since it comes back with some | |
2707 | * useful info. | |
2708 | */ | |
2709 | msg[0] = IPMI_NETFN_APP_REQUEST << 2; | |
2710 | msg[1] = IPMI_GET_DEVICE_ID_CMD; | |
2711 | smi_info->handlers->start_transaction(smi_info->si_sm, msg, 2); | |
2712 | ||
2713 | rv = wait_for_msg_done(smi_info); | |
2714 | if (rv) | |
1da177e4 | 2715 | goto out; |
1da177e4 | 2716 | |
1da177e4 LT |
2717 | resp_len = smi_info->handlers->get_result(smi_info->si_sm, |
2718 | resp, IPMI_MAX_MSG_LENGTH); | |
1da177e4 | 2719 | |
d8c98618 CM |
2720 | /* Check and record info from the get device id, in case we need it. */ |
2721 | rv = ipmi_demangle_device_id(resp, resp_len, &smi_info->device_id); | |
1da177e4 LT |
2722 | |
2723 | out: | |
2724 | kfree(resp); | |
2725 | return rv; | |
2726 | } | |
2727 | ||
40112ae7 CM |
2728 | static int try_enable_event_buffer(struct smi_info *smi_info) |
2729 | { | |
2730 | unsigned char msg[3]; | |
2731 | unsigned char *resp; | |
2732 | unsigned long resp_len; | |
2733 | int rv = 0; | |
2734 | ||
2735 | resp = kmalloc(IPMI_MAX_MSG_LENGTH, GFP_KERNEL); | |
2736 | if (!resp) | |
2737 | return -ENOMEM; | |
2738 | ||
2739 | msg[0] = IPMI_NETFN_APP_REQUEST << 2; | |
2740 | msg[1] = IPMI_GET_BMC_GLOBAL_ENABLES_CMD; | |
2741 | smi_info->handlers->start_transaction(smi_info->si_sm, msg, 2); | |
2742 | ||
2743 | rv = wait_for_msg_done(smi_info); | |
2744 | if (rv) { | |
279fbd0c MS |
2745 | printk(KERN_WARNING PFX "Error getting response from get" |
2746 | " global enables command, the event buffer is not" | |
40112ae7 CM |
2747 | " enabled.\n"); |
2748 | goto out; | |
2749 | } | |
2750 | ||
2751 | resp_len = smi_info->handlers->get_result(smi_info->si_sm, | |
2752 | resp, IPMI_MAX_MSG_LENGTH); | |
2753 | ||
2754 | if (resp_len < 4 || | |
2755 | resp[0] != (IPMI_NETFN_APP_REQUEST | 1) << 2 || | |
2756 | resp[1] != IPMI_GET_BMC_GLOBAL_ENABLES_CMD || | |
2757 | resp[2] != 0) { | |
279fbd0c MS |
2758 | printk(KERN_WARNING PFX "Invalid return from get global" |
2759 | " enables command, cannot enable the event buffer.\n"); | |
40112ae7 CM |
2760 | rv = -EINVAL; |
2761 | goto out; | |
2762 | } | |
2763 | ||
2764 | if (resp[3] & IPMI_BMC_EVT_MSG_BUFF) | |
2765 | /* buffer is already enabled, nothing to do. */ | |
2766 | goto out; | |
2767 | ||
2768 | msg[0] = IPMI_NETFN_APP_REQUEST << 2; | |
2769 | msg[1] = IPMI_SET_BMC_GLOBAL_ENABLES_CMD; | |
2770 | msg[2] = resp[3] | IPMI_BMC_EVT_MSG_BUFF; | |
2771 | smi_info->handlers->start_transaction(smi_info->si_sm, msg, 3); | |
2772 | ||
2773 | rv = wait_for_msg_done(smi_info); | |
2774 | if (rv) { | |
279fbd0c MS |
2775 | printk(KERN_WARNING PFX "Error getting response from set" |
2776 | " global, enables command, the event buffer is not" | |
40112ae7 CM |
2777 | " enabled.\n"); |
2778 | goto out; | |
2779 | } | |
2780 | ||
2781 | resp_len = smi_info->handlers->get_result(smi_info->si_sm, | |
2782 | resp, IPMI_MAX_MSG_LENGTH); | |
2783 | ||
2784 | if (resp_len < 3 || | |
2785 | resp[0] != (IPMI_NETFN_APP_REQUEST | 1) << 2 || | |
2786 | resp[1] != IPMI_SET_BMC_GLOBAL_ENABLES_CMD) { | |
279fbd0c MS |
2787 | printk(KERN_WARNING PFX "Invalid return from get global," |
2788 | "enables command, not enable the event buffer.\n"); | |
40112ae7 CM |
2789 | rv = -EINVAL; |
2790 | goto out; | |
2791 | } | |
2792 | ||
2793 | if (resp[2] != 0) | |
2794 | /* | |
2795 | * An error when setting the event buffer bit means | |
2796 | * that the event buffer is not supported. | |
2797 | */ | |
2798 | rv = -ENOENT; | |
2799 | out: | |
2800 | kfree(resp); | |
2801 | return rv; | |
2802 | } | |
2803 | ||
1da177e4 LT |
2804 | static int type_file_read_proc(char *page, char **start, off_t off, |
2805 | int count, int *eof, void *data) | |
2806 | { | |
1da177e4 LT |
2807 | struct smi_info *smi = data; |
2808 | ||
b361e27b | 2809 | return sprintf(page, "%s\n", si_to_str[smi->si_type]); |
1da177e4 LT |
2810 | } |
2811 | ||
2812 | static int stat_file_read_proc(char *page, char **start, off_t off, | |
2813 | int count, int *eof, void *data) | |
2814 | { | |
2815 | char *out = (char *) page; | |
2816 | struct smi_info *smi = data; | |
2817 | ||
2818 | out += sprintf(out, "interrupts_enabled: %d\n", | |
b0defcdb | 2819 | smi->irq && !smi->interrupt_disabled); |
64959e2d CM |
2820 | out += sprintf(out, "short_timeouts: %u\n", |
2821 | smi_get_stat(smi, short_timeouts)); | |
2822 | out += sprintf(out, "long_timeouts: %u\n", | |
2823 | smi_get_stat(smi, long_timeouts)); | |
64959e2d CM |
2824 | out += sprintf(out, "idles: %u\n", |
2825 | smi_get_stat(smi, idles)); | |
2826 | out += sprintf(out, "interrupts: %u\n", | |
2827 | smi_get_stat(smi, interrupts)); | |
2828 | out += sprintf(out, "attentions: %u\n", | |
2829 | smi_get_stat(smi, attentions)); | |
2830 | out += sprintf(out, "flag_fetches: %u\n", | |
2831 | smi_get_stat(smi, flag_fetches)); | |
2832 | out += sprintf(out, "hosed_count: %u\n", | |
2833 | smi_get_stat(smi, hosed_count)); | |
2834 | out += sprintf(out, "complete_transactions: %u\n", | |
2835 | smi_get_stat(smi, complete_transactions)); | |
2836 | out += sprintf(out, "events: %u\n", | |
2837 | smi_get_stat(smi, events)); | |
2838 | out += sprintf(out, "watchdog_pretimeouts: %u\n", | |
2839 | smi_get_stat(smi, watchdog_pretimeouts)); | |
2840 | out += sprintf(out, "incoming_messages: %u\n", | |
2841 | smi_get_stat(smi, incoming_messages)); | |
1da177e4 | 2842 | |
b361e27b CM |
2843 | return out - page; |
2844 | } | |
2845 | ||
2846 | static int param_read_proc(char *page, char **start, off_t off, | |
2847 | int count, int *eof, void *data) | |
2848 | { | |
2849 | struct smi_info *smi = data; | |
2850 | ||
2851 | return sprintf(page, | |
2852 | "%s,%s,0x%lx,rsp=%d,rsi=%d,rsh=%d,irq=%d,ipmb=%d\n", | |
2853 | si_to_str[smi->si_type], | |
2854 | addr_space_to_str[smi->io.addr_type], | |
2855 | smi->io.addr_data, | |
2856 | smi->io.regspacing, | |
2857 | smi->io.regsize, | |
2858 | smi->io.regshift, | |
2859 | smi->irq, | |
2860 | smi->slave_addr); | |
1da177e4 LT |
2861 | } |
2862 | ||
3ae0e0f9 CM |
2863 | /* |
2864 | * oem_data_avail_to_receive_msg_avail | |
2865 | * @info - smi_info structure with msg_flags set | |
2866 | * | |
2867 | * Converts flags from OEM_DATA_AVAIL to RECEIVE_MSG_AVAIL | |
2868 | * Returns 1 indicating need to re-run handle_flags(). | |
2869 | */ | |
2870 | static int oem_data_avail_to_receive_msg_avail(struct smi_info *smi_info) | |
2871 | { | |
e8b33617 | 2872 | smi_info->msg_flags = ((smi_info->msg_flags & ~OEM_DATA_AVAIL) | |
c305e3d3 | 2873 | RECEIVE_MSG_AVAIL); |
3ae0e0f9 CM |
2874 | return 1; |
2875 | } | |
2876 | ||
2877 | /* | |
2878 | * setup_dell_poweredge_oem_data_handler | |
2879 | * @info - smi_info.device_id must be populated | |
2880 | * | |
2881 | * Systems that match, but have firmware version < 1.40 may assert | |
2882 | * OEM0_DATA_AVAIL on their own, without being told via Set Flags that | |
2883 | * it's safe to do so. Such systems will de-assert OEM1_DATA_AVAIL | |
2884 | * upon receipt of IPMI_GET_MSG_CMD, so we should treat these flags | |
2885 | * as RECEIVE_MSG_AVAIL instead. | |
2886 | * | |
2887 | * As Dell has no plans to release IPMI 1.5 firmware that *ever* | |
2888 | * assert the OEM[012] bits, and if it did, the driver would have to | |
2889 | * change to handle that properly, we don't actually check for the | |
2890 | * firmware version. | |
2891 | * Device ID = 0x20 BMC on PowerEdge 8G servers | |
2892 | * Device Revision = 0x80 | |
2893 | * Firmware Revision1 = 0x01 BMC version 1.40 | |
2894 | * Firmware Revision2 = 0x40 BCD encoded | |
2895 | * IPMI Version = 0x51 IPMI 1.5 | |
2896 | * Manufacturer ID = A2 02 00 Dell IANA | |
2897 | * | |
d5a2b89a CM |
2898 | * Additionally, PowerEdge systems with IPMI < 1.5 may also assert |
2899 | * OEM0_DATA_AVAIL and needs to be treated as RECEIVE_MSG_AVAIL. | |
2900 | * | |
3ae0e0f9 CM |
2901 | */ |
2902 | #define DELL_POWEREDGE_8G_BMC_DEVICE_ID 0x20 | |
2903 | #define DELL_POWEREDGE_8G_BMC_DEVICE_REV 0x80 | |
2904 | #define DELL_POWEREDGE_8G_BMC_IPMI_VERSION 0x51 | |
50c812b2 | 2905 | #define DELL_IANA_MFR_ID 0x0002a2 |
3ae0e0f9 CM |
2906 | static void setup_dell_poweredge_oem_data_handler(struct smi_info *smi_info) |
2907 | { | |
2908 | struct ipmi_device_id *id = &smi_info->device_id; | |
50c812b2 | 2909 | if (id->manufacturer_id == DELL_IANA_MFR_ID) { |
d5a2b89a CM |
2910 | if (id->device_id == DELL_POWEREDGE_8G_BMC_DEVICE_ID && |
2911 | id->device_revision == DELL_POWEREDGE_8G_BMC_DEVICE_REV && | |
50c812b2 | 2912 | id->ipmi_version == DELL_POWEREDGE_8G_BMC_IPMI_VERSION) { |
d5a2b89a CM |
2913 | smi_info->oem_data_avail_handler = |
2914 | oem_data_avail_to_receive_msg_avail; | |
c305e3d3 CM |
2915 | } else if (ipmi_version_major(id) < 1 || |
2916 | (ipmi_version_major(id) == 1 && | |
2917 | ipmi_version_minor(id) < 5)) { | |
d5a2b89a CM |
2918 | smi_info->oem_data_avail_handler = |
2919 | oem_data_avail_to_receive_msg_avail; | |
2920 | } | |
3ae0e0f9 CM |
2921 | } |
2922 | } | |
2923 | ||
ea94027b CM |
2924 | #define CANNOT_RETURN_REQUESTED_LENGTH 0xCA |
2925 | static void return_hosed_msg_badsize(struct smi_info *smi_info) | |
2926 | { | |
2927 | struct ipmi_smi_msg *msg = smi_info->curr_msg; | |
2928 | ||
2929 | /* Make it a reponse */ | |
2930 | msg->rsp[0] = msg->data[0] | 4; | |
2931 | msg->rsp[1] = msg->data[1]; | |
2932 | msg->rsp[2] = CANNOT_RETURN_REQUESTED_LENGTH; | |
2933 | msg->rsp_size = 3; | |
2934 | smi_info->curr_msg = NULL; | |
2935 | deliver_recv_msg(smi_info, msg); | |
2936 | } | |
2937 | ||
2938 | /* | |
2939 | * dell_poweredge_bt_xaction_handler | |
2940 | * @info - smi_info.device_id must be populated | |
2941 | * | |
2942 | * Dell PowerEdge servers with the BT interface (x6xx and 1750) will | |
2943 | * not respond to a Get SDR command if the length of the data | |
2944 | * requested is exactly 0x3A, which leads to command timeouts and no | |
2945 | * data returned. This intercepts such commands, and causes userspace | |
2946 | * callers to try again with a different-sized buffer, which succeeds. | |
2947 | */ | |
2948 | ||
2949 | #define STORAGE_NETFN 0x0A | |
2950 | #define STORAGE_CMD_GET_SDR 0x23 | |
2951 | static int dell_poweredge_bt_xaction_handler(struct notifier_block *self, | |
2952 | unsigned long unused, | |
2953 | void *in) | |
2954 | { | |
2955 | struct smi_info *smi_info = in; | |
2956 | unsigned char *data = smi_info->curr_msg->data; | |
2957 | unsigned int size = smi_info->curr_msg->data_size; | |
2958 | if (size >= 8 && | |
2959 | (data[0]>>2) == STORAGE_NETFN && | |
2960 | data[1] == STORAGE_CMD_GET_SDR && | |
2961 | data[7] == 0x3A) { | |
2962 | return_hosed_msg_badsize(smi_info); | |
2963 | return NOTIFY_STOP; | |
2964 | } | |
2965 | return NOTIFY_DONE; | |
2966 | } | |
2967 | ||
2968 | static struct notifier_block dell_poweredge_bt_xaction_notifier = { | |
2969 | .notifier_call = dell_poweredge_bt_xaction_handler, | |
2970 | }; | |
2971 | ||
2972 | /* | |
2973 | * setup_dell_poweredge_bt_xaction_handler | |
2974 | * @info - smi_info.device_id must be filled in already | |
2975 | * | |
2976 | * Fills in smi_info.device_id.start_transaction_pre_hook | |
2977 | * when we know what function to use there. | |
2978 | */ | |
2979 | static void | |
2980 | setup_dell_poweredge_bt_xaction_handler(struct smi_info *smi_info) | |
2981 | { | |
2982 | struct ipmi_device_id *id = &smi_info->device_id; | |
50c812b2 | 2983 | if (id->manufacturer_id == DELL_IANA_MFR_ID && |
ea94027b CM |
2984 | smi_info->si_type == SI_BT) |
2985 | register_xaction_notifier(&dell_poweredge_bt_xaction_notifier); | |
2986 | } | |
2987 | ||
3ae0e0f9 CM |
2988 | /* |
2989 | * setup_oem_data_handler | |
2990 | * @info - smi_info.device_id must be filled in already | |
2991 | * | |
2992 | * Fills in smi_info.device_id.oem_data_available_handler | |
2993 | * when we know what function to use there. | |
2994 | */ | |
2995 | ||
2996 | static void setup_oem_data_handler(struct smi_info *smi_info) | |
2997 | { | |
2998 | setup_dell_poweredge_oem_data_handler(smi_info); | |
2999 | } | |
3000 | ||
ea94027b CM |
3001 | static void setup_xaction_handlers(struct smi_info *smi_info) |
3002 | { | |
3003 | setup_dell_poweredge_bt_xaction_handler(smi_info); | |
3004 | } | |
3005 | ||
a9a2c44f CM |
3006 | static inline void wait_for_timer_and_thread(struct smi_info *smi_info) |
3007 | { | |
453823ba | 3008 | if (smi_info->intf) { |
c305e3d3 CM |
3009 | /* |
3010 | * The timer and thread are only running if the | |
3011 | * interface has been started up and registered. | |
3012 | */ | |
453823ba CM |
3013 | if (smi_info->thread != NULL) |
3014 | kthread_stop(smi_info->thread); | |
3015 | del_timer_sync(&smi_info->si_timer); | |
3016 | } | |
a9a2c44f CM |
3017 | } |
3018 | ||
7420884c | 3019 | static __devinitdata struct ipmi_default_vals |
b0defcdb CM |
3020 | { |
3021 | int type; | |
3022 | int port; | |
7420884c | 3023 | } ipmi_defaults[] = |
b0defcdb CM |
3024 | { |
3025 | { .type = SI_KCS, .port = 0xca2 }, | |
3026 | { .type = SI_SMIC, .port = 0xca9 }, | |
3027 | { .type = SI_BT, .port = 0xe4 }, | |
3028 | { .port = 0 } | |
3029 | }; | |
3030 | ||
60ee6d5f | 3031 | static void __devinit default_find_bmc(void) |
b0defcdb CM |
3032 | { |
3033 | struct smi_info *info; | |
3034 | int i; | |
3035 | ||
3036 | for (i = 0; ; i++) { | |
3037 | if (!ipmi_defaults[i].port) | |
3038 | break; | |
68e1ee62 | 3039 | #ifdef CONFIG_PPC |
4ff31d77 CK |
3040 | if (check_legacy_ioport(ipmi_defaults[i].port)) |
3041 | continue; | |
3042 | #endif | |
de5e2ddf | 3043 | info = smi_info_alloc(); |
a09f4855 AM |
3044 | if (!info) |
3045 | return; | |
4ff31d77 | 3046 | |
5fedc4a2 | 3047 | info->addr_source = SI_DEFAULT; |
b0defcdb CM |
3048 | |
3049 | info->si_type = ipmi_defaults[i].type; | |
3050 | info->io_setup = port_setup; | |
3051 | info->io.addr_data = ipmi_defaults[i].port; | |
3052 | info->io.addr_type = IPMI_IO_ADDR_SPACE; | |
3053 | ||
3054 | info->io.addr = NULL; | |
3055 | info->io.regspacing = DEFAULT_REGSPACING; | |
3056 | info->io.regsize = DEFAULT_REGSPACING; | |
3057 | info->io.regshift = 0; | |
3058 | ||
2407d77a MG |
3059 | if (add_smi(info) == 0) { |
3060 | if ((try_smi_init(info)) == 0) { | |
3061 | /* Found one... */ | |
279fbd0c | 3062 | printk(KERN_INFO PFX "Found default %s" |
2407d77a MG |
3063 | " state machine at %s address 0x%lx\n", |
3064 | si_to_str[info->si_type], | |
3065 | addr_space_to_str[info->io.addr_type], | |
3066 | info->io.addr_data); | |
3067 | } else | |
3068 | cleanup_one_si(info); | |
7faefea6 YL |
3069 | } else { |
3070 | kfree(info); | |
b0defcdb CM |
3071 | } |
3072 | } | |
3073 | } | |
3074 | ||
3075 | static int is_new_interface(struct smi_info *info) | |
1da177e4 | 3076 | { |
b0defcdb | 3077 | struct smi_info *e; |
1da177e4 | 3078 | |
b0defcdb CM |
3079 | list_for_each_entry(e, &smi_infos, link) { |
3080 | if (e->io.addr_type != info->io.addr_type) | |
3081 | continue; | |
3082 | if (e->io.addr_data == info->io.addr_data) | |
3083 | return 0; | |
3084 | } | |
1da177e4 | 3085 | |
b0defcdb CM |
3086 | return 1; |
3087 | } | |
1da177e4 | 3088 | |
2407d77a | 3089 | static int add_smi(struct smi_info *new_smi) |
b0defcdb | 3090 | { |
2407d77a | 3091 | int rv = 0; |
b0defcdb | 3092 | |
279fbd0c | 3093 | printk(KERN_INFO PFX "Adding %s-specified %s state machine", |
2407d77a MG |
3094 | ipmi_addr_src_to_str[new_smi->addr_source], |
3095 | si_to_str[new_smi->si_type]); | |
d6dfd131 | 3096 | mutex_lock(&smi_infos_lock); |
b0defcdb | 3097 | if (!is_new_interface(new_smi)) { |
7bb671e3 | 3098 | printk(KERN_CONT " duplicate interface\n"); |
b0defcdb CM |
3099 | rv = -EBUSY; |
3100 | goto out_err; | |
3101 | } | |
1da177e4 | 3102 | |
2407d77a MG |
3103 | printk(KERN_CONT "\n"); |
3104 | ||
1da177e4 LT |
3105 | /* So we know not to free it unless we have allocated one. */ |
3106 | new_smi->intf = NULL; | |
3107 | new_smi->si_sm = NULL; | |
3108 | new_smi->handlers = NULL; | |
3109 | ||
2407d77a MG |
3110 | list_add_tail(&new_smi->link, &smi_infos); |
3111 | ||
3112 | out_err: | |
3113 | mutex_unlock(&smi_infos_lock); | |
3114 | return rv; | |
3115 | } | |
3116 | ||
3117 | static int try_smi_init(struct smi_info *new_smi) | |
3118 | { | |
3119 | int rv = 0; | |
3120 | int i; | |
3121 | ||
279fbd0c | 3122 | printk(KERN_INFO PFX "Trying %s-specified %s state" |
2407d77a MG |
3123 | " machine at %s address 0x%lx, slave address 0x%x," |
3124 | " irq %d\n", | |
3125 | ipmi_addr_src_to_str[new_smi->addr_source], | |
3126 | si_to_str[new_smi->si_type], | |
3127 | addr_space_to_str[new_smi->io.addr_type], | |
3128 | new_smi->io.addr_data, | |
3129 | new_smi->slave_addr, new_smi->irq); | |
3130 | ||
b0defcdb CM |
3131 | switch (new_smi->si_type) { |
3132 | case SI_KCS: | |
1da177e4 | 3133 | new_smi->handlers = &kcs_smi_handlers; |
b0defcdb CM |
3134 | break; |
3135 | ||
3136 | case SI_SMIC: | |
1da177e4 | 3137 | new_smi->handlers = &smic_smi_handlers; |
b0defcdb CM |
3138 | break; |
3139 | ||
3140 | case SI_BT: | |
1da177e4 | 3141 | new_smi->handlers = &bt_smi_handlers; |
b0defcdb CM |
3142 | break; |
3143 | ||
3144 | default: | |
1da177e4 LT |
3145 | /* No support for anything else yet. */ |
3146 | rv = -EIO; | |
3147 | goto out_err; | |
3148 | } | |
3149 | ||
3150 | /* Allocate the state machine's data and initialize it. */ | |
3151 | new_smi->si_sm = kmalloc(new_smi->handlers->size(), GFP_KERNEL); | |
b0defcdb | 3152 | if (!new_smi->si_sm) { |
279fbd0c MS |
3153 | printk(KERN_ERR PFX |
3154 | "Could not allocate state machine memory\n"); | |
1da177e4 LT |
3155 | rv = -ENOMEM; |
3156 | goto out_err; | |
3157 | } | |
3158 | new_smi->io_size = new_smi->handlers->init_data(new_smi->si_sm, | |
3159 | &new_smi->io); | |
3160 | ||
3161 | /* Now that we know the I/O size, we can set up the I/O. */ | |
3162 | rv = new_smi->io_setup(new_smi); | |
3163 | if (rv) { | |
279fbd0c | 3164 | printk(KERN_ERR PFX "Could not set up I/O space\n"); |
1da177e4 LT |
3165 | goto out_err; |
3166 | } | |
3167 | ||
1da177e4 LT |
3168 | /* Do low-level detection first. */ |
3169 | if (new_smi->handlers->detect(new_smi->si_sm)) { | |
b0defcdb | 3170 | if (new_smi->addr_source) |
279fbd0c | 3171 | printk(KERN_INFO PFX "Interface detection failed\n"); |
1da177e4 LT |
3172 | rv = -ENODEV; |
3173 | goto out_err; | |
3174 | } | |
3175 | ||
c305e3d3 CM |
3176 | /* |
3177 | * Attempt a get device id command. If it fails, we probably | |
3178 | * don't have a BMC here. | |
3179 | */ | |
1da177e4 | 3180 | rv = try_get_dev_id(new_smi); |
b0defcdb CM |
3181 | if (rv) { |
3182 | if (new_smi->addr_source) | |
279fbd0c | 3183 | printk(KERN_INFO PFX "There appears to be no BMC" |
b0defcdb | 3184 | " at this location\n"); |
1da177e4 | 3185 | goto out_err; |
b0defcdb | 3186 | } |
1da177e4 | 3187 | |
3ae0e0f9 | 3188 | setup_oem_data_handler(new_smi); |
ea94027b | 3189 | setup_xaction_handlers(new_smi); |
3ae0e0f9 | 3190 | |
1da177e4 LT |
3191 | INIT_LIST_HEAD(&(new_smi->xmit_msgs)); |
3192 | INIT_LIST_HEAD(&(new_smi->hp_xmit_msgs)); | |
3193 | new_smi->curr_msg = NULL; | |
3194 | atomic_set(&new_smi->req_events, 0); | |
3195 | new_smi->run_to_completion = 0; | |
64959e2d CM |
3196 | for (i = 0; i < SI_NUM_STATS; i++) |
3197 | atomic_set(&new_smi->stats[i], 0); | |
1da177e4 | 3198 | |
ea4078ca | 3199 | new_smi->interrupt_disabled = 1; |
a9a2c44f | 3200 | atomic_set(&new_smi->stop_operation, 0); |
b0defcdb CM |
3201 | new_smi->intf_num = smi_num; |
3202 | smi_num++; | |
1da177e4 | 3203 | |
40112ae7 CM |
3204 | rv = try_enable_event_buffer(new_smi); |
3205 | if (rv == 0) | |
3206 | new_smi->has_event_buffer = 1; | |
3207 | ||
c305e3d3 CM |
3208 | /* |
3209 | * Start clearing the flags before we enable interrupts or the | |
3210 | * timer to avoid racing with the timer. | |
3211 | */ | |
1da177e4 LT |
3212 | start_clear_flags(new_smi); |
3213 | /* IRQ is defined to be set when non-zero. */ | |
3214 | if (new_smi->irq) | |
3215 | new_smi->si_state = SI_CLEARING_FLAGS_THEN_SET_IRQ; | |
3216 | ||
50c812b2 | 3217 | if (!new_smi->dev) { |
c305e3d3 CM |
3218 | /* |
3219 | * If we don't already have a device from something | |
3220 | * else (like PCI), then register a new one. | |
3221 | */ | |
50c812b2 CM |
3222 | new_smi->pdev = platform_device_alloc("ipmi_si", |
3223 | new_smi->intf_num); | |
8b32b5d0 | 3224 | if (!new_smi->pdev) { |
279fbd0c MS |
3225 | printk(KERN_ERR PFX |
3226 | "Unable to allocate platform device\n"); | |
453823ba | 3227 | goto out_err; |
50c812b2 CM |
3228 | } |
3229 | new_smi->dev = &new_smi->pdev->dev; | |
fe2d5ffc | 3230 | new_smi->dev->driver = &ipmi_driver.driver; |
50c812b2 | 3231 | |
b48f5457 | 3232 | rv = platform_device_add(new_smi->pdev); |
50c812b2 | 3233 | if (rv) { |
279fbd0c MS |
3234 | printk(KERN_ERR PFX |
3235 | "Unable to register system interface device:" | |
50c812b2 CM |
3236 | " %d\n", |
3237 | rv); | |
453823ba | 3238 | goto out_err; |
50c812b2 CM |
3239 | } |
3240 | new_smi->dev_registered = 1; | |
3241 | } | |
3242 | ||
1da177e4 LT |
3243 | rv = ipmi_register_smi(&handlers, |
3244 | new_smi, | |
50c812b2 CM |
3245 | &new_smi->device_id, |
3246 | new_smi->dev, | |
759643b8 | 3247 | "bmc", |
453823ba | 3248 | new_smi->slave_addr); |
1da177e4 | 3249 | if (rv) { |
279fbd0c MS |
3250 | dev_err(new_smi->dev, "Unable to register device: error %d\n", |
3251 | rv); | |
1da177e4 LT |
3252 | goto out_err_stop_timer; |
3253 | } | |
3254 | ||
3255 | rv = ipmi_smi_add_proc_entry(new_smi->intf, "type", | |
fa68be0d | 3256 | type_file_read_proc, |
99b76233 | 3257 | new_smi); |
1da177e4 | 3258 | if (rv) { |
279fbd0c | 3259 | dev_err(new_smi->dev, "Unable to create proc entry: %d\n", rv); |
1da177e4 LT |
3260 | goto out_err_stop_timer; |
3261 | } | |
3262 | ||
3263 | rv = ipmi_smi_add_proc_entry(new_smi->intf, "si_stats", | |
fa68be0d | 3264 | stat_file_read_proc, |
99b76233 | 3265 | new_smi); |
1da177e4 | 3266 | if (rv) { |
279fbd0c | 3267 | dev_err(new_smi->dev, "Unable to create proc entry: %d\n", rv); |
1da177e4 LT |
3268 | goto out_err_stop_timer; |
3269 | } | |
3270 | ||
b361e27b | 3271 | rv = ipmi_smi_add_proc_entry(new_smi->intf, "params", |
fa68be0d | 3272 | param_read_proc, |
99b76233 | 3273 | new_smi); |
b361e27b | 3274 | if (rv) { |
279fbd0c | 3275 | dev_err(new_smi->dev, "Unable to create proc entry: %d\n", rv); |
b361e27b CM |
3276 | goto out_err_stop_timer; |
3277 | } | |
3278 | ||
279fbd0c MS |
3279 | dev_info(new_smi->dev, "IPMI %s interface initialized\n", |
3280 | si_to_str[new_smi->si_type]); | |
1da177e4 LT |
3281 | |
3282 | return 0; | |
3283 | ||
3284 | out_err_stop_timer: | |
a9a2c44f CM |
3285 | atomic_inc(&new_smi->stop_operation); |
3286 | wait_for_timer_and_thread(new_smi); | |
1da177e4 LT |
3287 | |
3288 | out_err: | |
2407d77a MG |
3289 | new_smi->interrupt_disabled = 1; |
3290 | ||
3291 | if (new_smi->intf) { | |
1da177e4 | 3292 | ipmi_unregister_smi(new_smi->intf); |
2407d77a MG |
3293 | new_smi->intf = NULL; |
3294 | } | |
1da177e4 | 3295 | |
2407d77a | 3296 | if (new_smi->irq_cleanup) { |
b0defcdb | 3297 | new_smi->irq_cleanup(new_smi); |
2407d77a MG |
3298 | new_smi->irq_cleanup = NULL; |
3299 | } | |
1da177e4 | 3300 | |
c305e3d3 CM |
3301 | /* |
3302 | * Wait until we know that we are out of any interrupt | |
3303 | * handlers might have been running before we freed the | |
3304 | * interrupt. | |
3305 | */ | |
fbd568a3 | 3306 | synchronize_sched(); |
1da177e4 LT |
3307 | |
3308 | if (new_smi->si_sm) { | |
3309 | if (new_smi->handlers) | |
3310 | new_smi->handlers->cleanup(new_smi->si_sm); | |
3311 | kfree(new_smi->si_sm); | |
2407d77a | 3312 | new_smi->si_sm = NULL; |
1da177e4 | 3313 | } |
2407d77a | 3314 | if (new_smi->addr_source_cleanup) { |
b0defcdb | 3315 | new_smi->addr_source_cleanup(new_smi); |
2407d77a MG |
3316 | new_smi->addr_source_cleanup = NULL; |
3317 | } | |
3318 | if (new_smi->io_cleanup) { | |
7767e126 | 3319 | new_smi->io_cleanup(new_smi); |
2407d77a MG |
3320 | new_smi->io_cleanup = NULL; |
3321 | } | |
1da177e4 | 3322 | |
2407d77a | 3323 | if (new_smi->dev_registered) { |
50c812b2 | 3324 | platform_device_unregister(new_smi->pdev); |
2407d77a MG |
3325 | new_smi->dev_registered = 0; |
3326 | } | |
b0defcdb | 3327 | |
1da177e4 LT |
3328 | return rv; |
3329 | } | |
3330 | ||
60ee6d5f | 3331 | static int __devinit init_ipmi_si(void) |
1da177e4 | 3332 | { |
1da177e4 LT |
3333 | int i; |
3334 | char *str; | |
50c812b2 | 3335 | int rv; |
2407d77a | 3336 | struct smi_info *e; |
06ee4594 | 3337 | enum ipmi_addr_src type = SI_INVALID; |
1da177e4 LT |
3338 | |
3339 | if (initialized) | |
3340 | return 0; | |
3341 | initialized = 1; | |
3342 | ||
50c812b2 | 3343 | /* Register the device drivers. */ |
fe2d5ffc | 3344 | rv = driver_register(&ipmi_driver.driver); |
50c812b2 | 3345 | if (rv) { |
279fbd0c | 3346 | printk(KERN_ERR PFX "Unable to register driver: %d\n", rv); |
50c812b2 CM |
3347 | return rv; |
3348 | } | |
3349 | ||
3350 | ||
1da177e4 LT |
3351 | /* Parse out the si_type string into its components. */ |
3352 | str = si_type_str; | |
3353 | if (*str != '\0') { | |
e8b33617 | 3354 | for (i = 0; (i < SI_MAX_PARMS) && (*str != '\0'); i++) { |
1da177e4 LT |
3355 | si_type[i] = str; |
3356 | str = strchr(str, ','); | |
3357 | if (str) { | |
3358 | *str = '\0'; | |
3359 | str++; | |
3360 | } else { | |
3361 | break; | |
3362 | } | |
3363 | } | |
3364 | } | |
3365 | ||
1fdd75bd | 3366 | printk(KERN_INFO "IPMI System Interface driver.\n"); |
1da177e4 | 3367 | |
b0defcdb CM |
3368 | hardcode_find_bmc(); |
3369 | ||
d8cc5267 MG |
3370 | /* If the user gave us a device, they presumably want us to use it */ |
3371 | mutex_lock(&smi_infos_lock); | |
3372 | if (!list_empty(&smi_infos)) { | |
3373 | mutex_unlock(&smi_infos_lock); | |
3374 | return 0; | |
3375 | } | |
3376 | mutex_unlock(&smi_infos_lock); | |
3377 | ||
b0defcdb | 3378 | #ifdef CONFIG_PCI |
168b35a7 | 3379 | rv = pci_register_driver(&ipmi_pci_driver); |
c305e3d3 | 3380 | if (rv) |
279fbd0c | 3381 | printk(KERN_ERR PFX "Unable to register PCI driver: %d\n", rv); |
56480287 MG |
3382 | else |
3383 | pci_registered = 1; | |
b0defcdb CM |
3384 | #endif |
3385 | ||
754d4531 MG |
3386 | #ifdef CONFIG_ACPI |
3387 | pnp_register_driver(&ipmi_pnp_driver); | |
561f8182 | 3388 | pnp_registered = 1; |
754d4531 MG |
3389 | #endif |
3390 | ||
3391 | #ifdef CONFIG_DMI | |
3392 | dmi_find_bmc(); | |
3393 | #endif | |
3394 | ||
3395 | #ifdef CONFIG_ACPI | |
3396 | spmi_find_bmc(); | |
3397 | #endif | |
3398 | ||
dba9b4f6 CM |
3399 | #ifdef CONFIG_PPC_OF |
3400 | of_register_platform_driver(&ipmi_of_platform_driver); | |
56480287 | 3401 | of_registered = 1; |
dba9b4f6 CM |
3402 | #endif |
3403 | ||
06ee4594 MG |
3404 | /* We prefer devices with interrupts, but in the case of a machine |
3405 | with multiple BMCs we assume that there will be several instances | |
3406 | of a given type so if we succeed in registering a type then also | |
3407 | try to register everything else of the same type */ | |
d8cc5267 | 3408 | |
2407d77a MG |
3409 | mutex_lock(&smi_infos_lock); |
3410 | list_for_each_entry(e, &smi_infos, link) { | |
06ee4594 MG |
3411 | /* Try to register a device if it has an IRQ and we either |
3412 | haven't successfully registered a device yet or this | |
3413 | device has the same type as one we successfully registered */ | |
3414 | if (e->irq && (!type || e->addr_source == type)) { | |
d8cc5267 | 3415 | if (!try_smi_init(e)) { |
06ee4594 | 3416 | type = e->addr_source; |
d8cc5267 MG |
3417 | } |
3418 | } | |
3419 | } | |
3420 | ||
06ee4594 MG |
3421 | /* type will only have been set if we successfully registered an si */ |
3422 | if (type) { | |
3423 | mutex_unlock(&smi_infos_lock); | |
3424 | return 0; | |
3425 | } | |
3426 | ||
d8cc5267 MG |
3427 | /* Fall back to the preferred device */ |
3428 | ||
3429 | list_for_each_entry(e, &smi_infos, link) { | |
06ee4594 | 3430 | if (!e->irq && (!type || e->addr_source == type)) { |
d8cc5267 | 3431 | if (!try_smi_init(e)) { |
06ee4594 | 3432 | type = e->addr_source; |
d8cc5267 MG |
3433 | } |
3434 | } | |
2407d77a MG |
3435 | } |
3436 | mutex_unlock(&smi_infos_lock); | |
3437 | ||
06ee4594 MG |
3438 | if (type) |
3439 | return 0; | |
3440 | ||
b0defcdb | 3441 | if (si_trydefaults) { |
d6dfd131 | 3442 | mutex_lock(&smi_infos_lock); |
b0defcdb CM |
3443 | if (list_empty(&smi_infos)) { |
3444 | /* No BMC was found, try defaults. */ | |
d6dfd131 | 3445 | mutex_unlock(&smi_infos_lock); |
b0defcdb | 3446 | default_find_bmc(); |
2407d77a | 3447 | } else |
d6dfd131 | 3448 | mutex_unlock(&smi_infos_lock); |
1da177e4 LT |
3449 | } |
3450 | ||
d6dfd131 | 3451 | mutex_lock(&smi_infos_lock); |
b361e27b | 3452 | if (unload_when_empty && list_empty(&smi_infos)) { |
d6dfd131 | 3453 | mutex_unlock(&smi_infos_lock); |
d2478521 | 3454 | cleanup_ipmi_si(); |
279fbd0c MS |
3455 | printk(KERN_WARNING PFX |
3456 | "Unable to find any System Interface(s)\n"); | |
1da177e4 | 3457 | return -ENODEV; |
b0defcdb | 3458 | } else { |
d6dfd131 | 3459 | mutex_unlock(&smi_infos_lock); |
b0defcdb | 3460 | return 0; |
1da177e4 | 3461 | } |
1da177e4 LT |
3462 | } |
3463 | module_init(init_ipmi_si); | |
3464 | ||
b361e27b | 3465 | static void cleanup_one_si(struct smi_info *to_clean) |
1da177e4 | 3466 | { |
2407d77a | 3467 | int rv = 0; |
1da177e4 LT |
3468 | unsigned long flags; |
3469 | ||
b0defcdb | 3470 | if (!to_clean) |
1da177e4 LT |
3471 | return; |
3472 | ||
b0defcdb CM |
3473 | list_del(&to_clean->link); |
3474 | ||
ee6cd5f8 | 3475 | /* Tell the driver that we are shutting down. */ |
a9a2c44f | 3476 | atomic_inc(&to_clean->stop_operation); |
b0defcdb | 3477 | |
c305e3d3 CM |
3478 | /* |
3479 | * Make sure the timer and thread are stopped and will not run | |
3480 | * again. | |
3481 | */ | |
a9a2c44f | 3482 | wait_for_timer_and_thread(to_clean); |
1da177e4 | 3483 | |
c305e3d3 CM |
3484 | /* |
3485 | * Timeouts are stopped, now make sure the interrupts are off | |
3486 | * for the device. A little tricky with locks to make sure | |
3487 | * there are no races. | |
3488 | */ | |
ee6cd5f8 CM |
3489 | spin_lock_irqsave(&to_clean->si_lock, flags); |
3490 | while (to_clean->curr_msg || (to_clean->si_state != SI_NORMAL)) { | |
3491 | spin_unlock_irqrestore(&to_clean->si_lock, flags); | |
3492 | poll(to_clean); | |
3493 | schedule_timeout_uninterruptible(1); | |
3494 | spin_lock_irqsave(&to_clean->si_lock, flags); | |
3495 | } | |
3496 | disable_si_irq(to_clean); | |
3497 | spin_unlock_irqrestore(&to_clean->si_lock, flags); | |
3498 | while (to_clean->curr_msg || (to_clean->si_state != SI_NORMAL)) { | |
3499 | poll(to_clean); | |
3500 | schedule_timeout_uninterruptible(1); | |
3501 | } | |
3502 | ||
3503 | /* Clean up interrupts and make sure that everything is done. */ | |
3504 | if (to_clean->irq_cleanup) | |
3505 | to_clean->irq_cleanup(to_clean); | |
e8b33617 | 3506 | while (to_clean->curr_msg || (to_clean->si_state != SI_NORMAL)) { |
1da177e4 | 3507 | poll(to_clean); |
da4cd8df | 3508 | schedule_timeout_uninterruptible(1); |
1da177e4 LT |
3509 | } |
3510 | ||
2407d77a MG |
3511 | if (to_clean->intf) |
3512 | rv = ipmi_unregister_smi(to_clean->intf); | |
3513 | ||
1da177e4 | 3514 | if (rv) { |
279fbd0c | 3515 | printk(KERN_ERR PFX "Unable to unregister device: errno=%d\n", |
1da177e4 LT |
3516 | rv); |
3517 | } | |
3518 | ||
2407d77a MG |
3519 | if (to_clean->handlers) |
3520 | to_clean->handlers->cleanup(to_clean->si_sm); | |
1da177e4 LT |
3521 | |
3522 | kfree(to_clean->si_sm); | |
3523 | ||
b0defcdb CM |
3524 | if (to_clean->addr_source_cleanup) |
3525 | to_clean->addr_source_cleanup(to_clean); | |
7767e126 PG |
3526 | if (to_clean->io_cleanup) |
3527 | to_clean->io_cleanup(to_clean); | |
50c812b2 CM |
3528 | |
3529 | if (to_clean->dev_registered) | |
3530 | platform_device_unregister(to_clean->pdev); | |
3531 | ||
3532 | kfree(to_clean); | |
1da177e4 LT |
3533 | } |
3534 | ||
60ee6d5f | 3535 | static void __exit cleanup_ipmi_si(void) |
1da177e4 | 3536 | { |
b0defcdb | 3537 | struct smi_info *e, *tmp_e; |
1da177e4 | 3538 | |
b0defcdb | 3539 | if (!initialized) |
1da177e4 LT |
3540 | return; |
3541 | ||
b0defcdb | 3542 | #ifdef CONFIG_PCI |
56480287 MG |
3543 | if (pci_registered) |
3544 | pci_unregister_driver(&ipmi_pci_driver); | |
b0defcdb | 3545 | #endif |
27d0567a | 3546 | #ifdef CONFIG_ACPI |
561f8182 YL |
3547 | if (pnp_registered) |
3548 | pnp_unregister_driver(&ipmi_pnp_driver); | |
9e368fa0 | 3549 | #endif |
b0defcdb | 3550 | |
dba9b4f6 | 3551 | #ifdef CONFIG_PPC_OF |
56480287 MG |
3552 | if (of_registered) |
3553 | of_unregister_platform_driver(&ipmi_of_platform_driver); | |
dba9b4f6 CM |
3554 | #endif |
3555 | ||
d6dfd131 | 3556 | mutex_lock(&smi_infos_lock); |
b0defcdb CM |
3557 | list_for_each_entry_safe(e, tmp_e, &smi_infos, link) |
3558 | cleanup_one_si(e); | |
d6dfd131 | 3559 | mutex_unlock(&smi_infos_lock); |
50c812b2 | 3560 | |
fe2d5ffc | 3561 | driver_unregister(&ipmi_driver.driver); |
1da177e4 LT |
3562 | } |
3563 | module_exit(cleanup_ipmi_si); | |
3564 | ||
3565 | MODULE_LICENSE("GPL"); | |
1fdd75bd | 3566 | MODULE_AUTHOR("Corey Minyard <minyard@mvista.com>"); |
c305e3d3 CM |
3567 | MODULE_DESCRIPTION("Interface to the IPMI driver for the KCS, SMIC, and BT" |
3568 | " system interfaces."); |