Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * drivers/s390/cio/device_fsm.c | |
3 | * finite state machine for device handling | |
4 | * | |
c820de39 | 5 | * Copyright IBM Corp. 2002,2008 |
4ce3b30c | 6 | * Author(s): Cornelia Huck (cornelia.huck@de.ibm.com) |
1da177e4 LT |
7 | * Martin Schwidefsky (schwidefsky@de.ibm.com) |
8 | */ | |
9 | ||
10 | #include <linux/module.h> | |
1da177e4 | 11 | #include <linux/init.h> |
4e57b681 TS |
12 | #include <linux/jiffies.h> |
13 | #include <linux/string.h> | |
1da177e4 LT |
14 | |
15 | #include <asm/ccwdev.h> | |
4c24da79 | 16 | #include <asm/cio.h> |
e5854a58 | 17 | #include <asm/chpid.h> |
1da177e4 LT |
18 | |
19 | #include "cio.h" | |
20 | #include "cio_debug.h" | |
21 | #include "css.h" | |
22 | #include "device.h" | |
23 | #include "chsc.h" | |
24 | #include "ioasm.h" | |
e6b6e10a | 25 | #include "chp.h" |
1da177e4 | 26 | |
14ff56bb SO |
27 | static int timeout_log_enabled; |
28 | ||
14ff56bb SO |
29 | static int __init ccw_timeout_log_setup(char *unused) |
30 | { | |
31 | timeout_log_enabled = 1; | |
32 | return 1; | |
33 | } | |
34 | ||
35 | __setup("ccw_timeout_log", ccw_timeout_log_setup); | |
36 | ||
37 | static void ccw_timeout_log(struct ccw_device *cdev) | |
38 | { | |
39 | struct schib schib; | |
40 | struct subchannel *sch; | |
cd6b4f27 | 41 | struct io_subchannel_private *private; |
83262d63 | 42 | union orb *orb; |
14ff56bb SO |
43 | int cc; |
44 | ||
45 | sch = to_subchannel(cdev->dev.parent); | |
cd6b4f27 | 46 | private = to_io_private(sch); |
83262d63 | 47 | orb = &private->orb; |
14ff56bb SO |
48 | cc = stsch(sch->schid, &schib); |
49 | ||
50 | printk(KERN_WARNING "cio: ccw device timeout occurred at %llx, " | |
51 | "device information:\n", get_clock()); | |
52 | printk(KERN_WARNING "cio: orb:\n"); | |
53 | print_hex_dump(KERN_WARNING, "cio: ", DUMP_PREFIX_NONE, 16, 1, | |
83262d63 | 54 | orb, sizeof(*orb), 0); |
2a0217d5 KS |
55 | printk(KERN_WARNING "cio: ccw device bus id: %s\n", |
56 | dev_name(&cdev->dev)); | |
57 | printk(KERN_WARNING "cio: subchannel bus id: %s\n", | |
58 | dev_name(&sch->dev)); | |
14ff56bb SO |
59 | printk(KERN_WARNING "cio: subchannel lpm: %02x, opm: %02x, " |
60 | "vpm: %02x\n", sch->lpm, sch->opm, sch->vpm); | |
61 | ||
83262d63 PO |
62 | if (orb->tm.b) { |
63 | printk(KERN_WARNING "cio: orb indicates transport mode\n"); | |
64 | printk(KERN_WARNING "cio: last tcw:\n"); | |
65 | print_hex_dump(KERN_WARNING, "cio: ", DUMP_PREFIX_NONE, 16, 1, | |
66 | (void *)(addr_t)orb->tm.tcw, | |
67 | sizeof(struct tcw), 0); | |
68 | } else { | |
69 | printk(KERN_WARNING "cio: orb indicates command mode\n"); | |
70 | if ((void *)(addr_t)orb->cmd.cpa == &private->sense_ccw || | |
71 | (void *)(addr_t)orb->cmd.cpa == cdev->private->iccws) | |
72 | printk(KERN_WARNING "cio: last channel program " | |
73 | "(intern):\n"); | |
74 | else | |
75 | printk(KERN_WARNING "cio: last channel program:\n"); | |
76 | ||
77 | print_hex_dump(KERN_WARNING, "cio: ", DUMP_PREFIX_NONE, 16, 1, | |
78 | (void *)(addr_t)orb->cmd.cpa, | |
79 | sizeof(struct ccw1), 0); | |
80 | } | |
14ff56bb SO |
81 | printk(KERN_WARNING "cio: ccw device state: %d\n", |
82 | cdev->private->state); | |
83 | printk(KERN_WARNING "cio: store subchannel returned: cc=%d\n", cc); | |
84 | printk(KERN_WARNING "cio: schib:\n"); | |
85 | print_hex_dump(KERN_WARNING, "cio: ", DUMP_PREFIX_NONE, 16, 1, | |
86 | &schib, sizeof(schib), 0); | |
87 | printk(KERN_WARNING "cio: ccw device flags:\n"); | |
88 | print_hex_dump(KERN_WARNING, "cio: ", DUMP_PREFIX_NONE, 16, 1, | |
89 | &cdev->private->flags, sizeof(cdev->private->flags), 0); | |
90 | } | |
91 | ||
1da177e4 LT |
92 | /* |
93 | * Timeout function. It just triggers a DEV_EVENT_TIMEOUT. | |
94 | */ | |
95 | static void | |
96 | ccw_device_timeout(unsigned long data) | |
97 | { | |
98 | struct ccw_device *cdev; | |
99 | ||
100 | cdev = (struct ccw_device *) data; | |
101 | spin_lock_irq(cdev->ccwlock); | |
14ff56bb SO |
102 | if (timeout_log_enabled) |
103 | ccw_timeout_log(cdev); | |
1da177e4 LT |
104 | dev_fsm_event(cdev, DEV_EVENT_TIMEOUT); |
105 | spin_unlock_irq(cdev->ccwlock); | |
106 | } | |
107 | ||
108 | /* | |
109 | * Set timeout | |
110 | */ | |
111 | void | |
112 | ccw_device_set_timeout(struct ccw_device *cdev, int expires) | |
113 | { | |
114 | if (expires == 0) { | |
115 | del_timer(&cdev->private->timer); | |
116 | return; | |
117 | } | |
118 | if (timer_pending(&cdev->private->timer)) { | |
119 | if (mod_timer(&cdev->private->timer, jiffies + expires)) | |
120 | return; | |
121 | } | |
122 | cdev->private->timer.function = ccw_device_timeout; | |
123 | cdev->private->timer.data = (unsigned long) cdev; | |
124 | cdev->private->timer.expires = jiffies + expires; | |
125 | add_timer(&cdev->private->timer); | |
126 | } | |
127 | ||
1da177e4 LT |
128 | /* |
129 | * Cancel running i/o. This is called repeatedly since halt/clear are | |
130 | * asynchronous operations. We do one try with cio_cancel, two tries | |
131 | * with cio_halt, 255 tries with cio_clear. If everythings fails panic. | |
132 | * Returns 0 if device now idle, -ENODEV for device not operational and | |
133 | * -EBUSY if an interrupt is expected (either from halt/clear or from a | |
134 | * status pending). | |
135 | */ | |
136 | int | |
137 | ccw_device_cancel_halt_clear(struct ccw_device *cdev) | |
138 | { | |
139 | struct subchannel *sch; | |
140 | int ret; | |
141 | ||
142 | sch = to_subchannel(cdev->dev.parent); | |
cdb912a4 | 143 | if (cio_update_schib(sch)) |
1da177e4 | 144 | return -ENODEV; |
2470b648 CH |
145 | if (!sch->schib.pmcw.ena) |
146 | /* Not operational -> done. */ | |
1da177e4 LT |
147 | return 0; |
148 | /* Stage 1: cancel io. */ | |
23d805b6 PO |
149 | if (!(scsw_actl(&sch->schib.scsw) & SCSW_ACTL_HALT_PEND) && |
150 | !(scsw_actl(&sch->schib.scsw) & SCSW_ACTL_CLEAR_PEND)) { | |
83262d63 PO |
151 | if (!scsw_is_tm(&sch->schib.scsw)) { |
152 | ret = cio_cancel(sch); | |
153 | if (ret != -EINVAL) | |
154 | return ret; | |
155 | } | |
156 | /* cancel io unsuccessful or not applicable (transport mode). | |
157 | * Continue with asynchronous instructions. */ | |
1da177e4 LT |
158 | cdev->private->iretry = 3; /* 3 halt retries. */ |
159 | } | |
23d805b6 | 160 | if (!(scsw_actl(&sch->schib.scsw) & SCSW_ACTL_CLEAR_PEND)) { |
1da177e4 LT |
161 | /* Stage 2: halt io. */ |
162 | if (cdev->private->iretry) { | |
163 | cdev->private->iretry--; | |
164 | ret = cio_halt(sch); | |
ba4ba8a6 PO |
165 | if (ret != -EBUSY) |
166 | return (ret == 0) ? -EBUSY : ret; | |
1da177e4 LT |
167 | } |
168 | /* halt io unsuccessful. */ | |
169 | cdev->private->iretry = 255; /* 255 clear retries. */ | |
170 | } | |
171 | /* Stage 3: clear io. */ | |
172 | if (cdev->private->iretry) { | |
173 | cdev->private->iretry--; | |
174 | ret = cio_clear (sch); | |
175 | return (ret == 0) ? -EBUSY : ret; | |
176 | } | |
177 | panic("Can't stop i/o on subchannel.\n"); | |
178 | } | |
179 | ||
823d494a | 180 | void ccw_device_update_sense_data(struct ccw_device *cdev) |
1da177e4 | 181 | { |
823d494a SO |
182 | memset(&cdev->id, 0, sizeof(cdev->id)); |
183 | cdev->id.cu_type = cdev->private->senseid.cu_type; | |
184 | cdev->id.cu_model = cdev->private->senseid.cu_model; | |
185 | cdev->id.dev_type = cdev->private->senseid.dev_type; | |
186 | cdev->id.dev_model = cdev->private->senseid.dev_model; | |
187 | } | |
1da177e4 | 188 | |
823d494a SO |
189 | int ccw_device_test_sense_data(struct ccw_device *cdev) |
190 | { | |
191 | return cdev->id.cu_type == cdev->private->senseid.cu_type && | |
192 | cdev->id.cu_model == cdev->private->senseid.cu_model && | |
193 | cdev->id.dev_type == cdev->private->senseid.dev_type && | |
194 | cdev->id.dev_model == cdev->private->senseid.dev_model; | |
1da177e4 LT |
195 | } |
196 | ||
197 | /* | |
198 | * The machine won't give us any notification by machine check if a chpid has | |
199 | * been varied online on the SE so we have to find out by magic (i. e. driving | |
200 | * the channel subsystem to device selection and updating our path masks). | |
201 | */ | |
4d284cac | 202 | static void |
1da177e4 LT |
203 | __recover_lost_chpids(struct subchannel *sch, int old_lpm) |
204 | { | |
205 | int mask, i; | |
f86635fa | 206 | struct chp_id chpid; |
1da177e4 | 207 | |
f86635fa | 208 | chp_id_init(&chpid); |
1da177e4 LT |
209 | for (i = 0; i<8; i++) { |
210 | mask = 0x80 >> i; | |
211 | if (!(sch->lpm & mask)) | |
212 | continue; | |
213 | if (old_lpm & mask) | |
214 | continue; | |
f86635fa | 215 | chpid.id = sch->schib.pmcw.chpid[i]; |
83b3370c PO |
216 | if (!chp_is_registered(chpid)) |
217 | css_schedule_eval_all(); | |
1da177e4 LT |
218 | } |
219 | } | |
220 | ||
221 | /* | |
222 | * Stop device recognition. | |
223 | */ | |
224 | static void | |
225 | ccw_device_recog_done(struct ccw_device *cdev, int state) | |
226 | { | |
227 | struct subchannel *sch; | |
823d494a | 228 | int old_lpm; |
1da177e4 LT |
229 | |
230 | sch = to_subchannel(cdev->dev.parent); | |
231 | ||
1da177e4 LT |
232 | cio_disable_subchannel(sch); |
233 | /* | |
234 | * Now that we tried recognition, we have performed device selection | |
235 | * through ssch() and the path information is up to date. | |
236 | */ | |
237 | old_lpm = sch->lpm; | |
cdb912a4 | 238 | |
4ffa9234 | 239 | /* Check since device may again have become not operational. */ |
cdb912a4 | 240 | if (cio_update_schib(sch)) |
4ffa9234 | 241 | state = DEV_STATE_NOT_OPER; |
cdb912a4 SO |
242 | else |
243 | sch->lpm = sch->schib.pmcw.pam & sch->opm; | |
244 | ||
1da177e4 LT |
245 | if (cdev->private->state == DEV_STATE_DISCONNECTED_SENSE_ID) |
246 | /* Force reprobe on all chpids. */ | |
247 | old_lpm = 0; | |
248 | if (sch->lpm != old_lpm) | |
249 | __recover_lost_chpids(sch, old_lpm); | |
47593bfa SO |
250 | if (cdev->private->state == DEV_STATE_DISCONNECTED_SENSE_ID && |
251 | (state == DEV_STATE_NOT_OPER || state == DEV_STATE_BOXED)) { | |
252 | cdev->private->flags.recog_done = 1; | |
253 | cdev->private->state = DEV_STATE_DISCONNECTED; | |
254 | wake_up(&cdev->private->wait_q); | |
255 | return; | |
1da177e4 | 256 | } |
823d494a SO |
257 | if (cdev->private->flags.resuming) { |
258 | cdev->private->state = state; | |
259 | cdev->private->flags.recog_done = 1; | |
260 | wake_up(&cdev->private->wait_q); | |
261 | return; | |
262 | } | |
1da177e4 LT |
263 | switch (state) { |
264 | case DEV_STATE_NOT_OPER: | |
1da177e4 LT |
265 | break; |
266 | case DEV_STATE_OFFLINE: | |
823d494a SO |
267 | if (!cdev->online) { |
268 | ccw_device_update_sense_data(cdev); | |
823d494a | 269 | break; |
1da177e4 | 270 | } |
823d494a SO |
271 | cdev->private->state = DEV_STATE_OFFLINE; |
272 | cdev->private->flags.recog_done = 1; | |
273 | if (ccw_device_test_sense_data(cdev)) { | |
274 | cdev->private->flags.donotify = 1; | |
275 | ccw_device_online(cdev); | |
276 | wake_up(&cdev->private->wait_q); | |
277 | } else { | |
278 | ccw_device_update_sense_data(cdev); | |
37de53bb | 279 | ccw_device_sched_todo(cdev, CDEV_TODO_REBIND); |
1da177e4 | 280 | } |
823d494a | 281 | return; |
1da177e4 | 282 | case DEV_STATE_BOXED: |
47593bfa SO |
283 | if (cdev->id.cu_type != 0) { /* device was recognized before */ |
284 | cdev->private->flags.recog_done = 1; | |
285 | cdev->private->state = DEV_STATE_BOXED; | |
286 | wake_up(&cdev->private->wait_q); | |
287 | return; | |
288 | } | |
1da177e4 LT |
289 | break; |
290 | } | |
291 | cdev->private->state = state; | |
292 | io_subchannel_recog_done(cdev); | |
156013ff | 293 | wake_up(&cdev->private->wait_q); |
1da177e4 LT |
294 | } |
295 | ||
296 | /* | |
297 | * Function called from device_id.c after sense id has completed. | |
298 | */ | |
299 | void | |
300 | ccw_device_sense_id_done(struct ccw_device *cdev, int err) | |
301 | { | |
302 | switch (err) { | |
303 | case 0: | |
304 | ccw_device_recog_done(cdev, DEV_STATE_OFFLINE); | |
305 | break; | |
306 | case -ETIME: /* Sense id stopped by timeout. */ | |
307 | ccw_device_recog_done(cdev, DEV_STATE_BOXED); | |
308 | break; | |
309 | default: | |
310 | ccw_device_recog_done(cdev, DEV_STATE_NOT_OPER); | |
311 | break; | |
312 | } | |
313 | } | |
314 | ||
c820de39 CH |
315 | int ccw_device_notify(struct ccw_device *cdev, int event) |
316 | { | |
317 | if (!cdev->drv) | |
318 | return 0; | |
319 | if (!cdev->online) | |
320 | return 0; | |
91c36919 PO |
321 | CIO_MSG_EVENT(2, "notify called for 0.%x.%04x, event=%d\n", |
322 | cdev->private->dev_id.ssid, cdev->private->dev_id.devno, | |
323 | event); | |
c820de39 CH |
324 | return cdev->drv->notify ? cdev->drv->notify(cdev, event) : 0; |
325 | } | |
326 | ||
91c36919 PO |
327 | static void ccw_device_oper_notify(struct ccw_device *cdev) |
328 | { | |
329 | if (ccw_device_notify(cdev, CIO_OPER)) { | |
94bb0633 | 330 | /* Reenable channel measurements, if needed. */ |
37de53bb | 331 | ccw_device_sched_todo(cdev, CDEV_TODO_ENABLE_CMF); |
91c36919 PO |
332 | return; |
333 | } | |
334 | /* Driver doesn't want device back. */ | |
335 | ccw_device_set_notoper(cdev); | |
37de53bb | 336 | ccw_device_sched_todo(cdev, CDEV_TODO_REBIND); |
1da177e4 LT |
337 | } |
338 | ||
339 | /* | |
340 | * Finished with online/offline processing. | |
341 | */ | |
342 | static void | |
343 | ccw_device_done(struct ccw_device *cdev, int state) | |
344 | { | |
345 | struct subchannel *sch; | |
346 | ||
347 | sch = to_subchannel(cdev->dev.parent); | |
348 | ||
f1ee3281 CH |
349 | ccw_device_set_timeout(cdev, 0); |
350 | ||
1da177e4 LT |
351 | if (state != DEV_STATE_ONLINE) |
352 | cio_disable_subchannel(sch); | |
353 | ||
354 | /* Reset device status. */ | |
355 | memset(&cdev->private->irb, 0, sizeof(struct irb)); | |
356 | ||
357 | cdev->private->state = state; | |
358 | ||
9a332116 PO |
359 | switch (state) { |
360 | case DEV_STATE_BOXED: | |
139b83dd ME |
361 | CIO_MSG_EVENT(0, "Boxed device %04x on subchannel %04x\n", |
362 | cdev->private->dev_id.devno, sch->schid.sch_no); | |
47593bfa | 363 | if (cdev->online && !ccw_device_notify(cdev, CIO_BOXED)) |
37de53bb | 364 | ccw_device_sched_todo(cdev, CDEV_TODO_UNREG); |
47593bfa | 365 | cdev->private->flags.donotify = 0; |
9a332116 PO |
366 | break; |
367 | case DEV_STATE_NOT_OPER: | |
626e476a SO |
368 | CIO_MSG_EVENT(0, "Device %04x gone on subchannel %04x\n", |
369 | cdev->private->dev_id.devno, sch->schid.sch_no); | |
370 | if (!ccw_device_notify(cdev, CIO_GONE)) | |
37de53bb | 371 | ccw_device_sched_todo(cdev, CDEV_TODO_UNREG); |
6afcc775 PO |
372 | else |
373 | ccw_device_set_disconnected(cdev); | |
626e476a | 374 | cdev->private->flags.donotify = 0; |
9a332116 PO |
375 | break; |
376 | case DEV_STATE_DISCONNECTED: | |
377 | CIO_MSG_EVENT(0, "Disconnected device %04x on subchannel " | |
378 | "%04x\n", cdev->private->dev_id.devno, | |
379 | sch->schid.sch_no); | |
380 | if (!ccw_device_notify(cdev, CIO_NO_PATH)) | |
37de53bb | 381 | ccw_device_sched_todo(cdev, CDEV_TODO_UNREG); |
9a332116 PO |
382 | else |
383 | ccw_device_set_disconnected(cdev); | |
384 | cdev->private->flags.donotify = 0; | |
385 | break; | |
386 | default: | |
387 | break; | |
626e476a | 388 | } |
1da177e4 LT |
389 | |
390 | if (cdev->private->flags.donotify) { | |
391 | cdev->private->flags.donotify = 0; | |
91c36919 | 392 | ccw_device_oper_notify(cdev); |
1da177e4 LT |
393 | } |
394 | wake_up(&cdev->private->wait_q); | |
1da177e4 LT |
395 | } |
396 | ||
397 | /* | |
398 | * Function called from device_pgid.c after sense path ground has completed. | |
399 | */ | |
400 | void | |
401 | ccw_device_sense_pgid_done(struct ccw_device *cdev, int err) | |
402 | { | |
403 | struct subchannel *sch; | |
404 | ||
405 | sch = to_subchannel(cdev->dev.parent); | |
406 | switch (err) { | |
7e560814 | 407 | case -EOPNOTSUPP: /* path grouping not supported, use nop instead. */ |
7e560814 CH |
408 | case 0: /* success */ |
409 | case -EACCES: /* partial success, some paths not operational */ | |
1da177e4 LT |
410 | break; |
411 | case -ETIME: /* Sense path group id stopped by timeout. */ | |
412 | case -EUSERS: /* device is reserved for someone else. */ | |
413 | ccw_device_done(cdev, DEV_STATE_BOXED); | |
7e560814 | 414 | return; |
1da177e4 LT |
415 | default: |
416 | ccw_device_done(cdev, DEV_STATE_NOT_OPER); | |
7e560814 | 417 | return; |
1da177e4 | 418 | } |
7e560814 | 419 | /* Start Path Group verification. */ |
7e560814 CH |
420 | cdev->private->state = DEV_STATE_VERIFY; |
421 | ccw_device_verify_start(cdev); | |
1da177e4 LT |
422 | } |
423 | ||
424 | /* | |
425 | * Start device recognition. | |
426 | */ | |
736b5db8 | 427 | void ccw_device_recognition(struct ccw_device *cdev) |
1da177e4 | 428 | { |
736b5db8 | 429 | struct subchannel *sch = to_subchannel(cdev->dev.parent); |
1da177e4 LT |
430 | |
431 | /* | |
432 | * We used to start here with a sense pgid to find out whether a device | |
433 | * is locked by someone else. Unfortunately, the sense pgid command | |
434 | * code has other meanings on devices predating the path grouping | |
435 | * algorithm, so we start with sense id and box the device after an | |
436 | * timeout (or if sense pgid during path verification detects the device | |
437 | * is locked, as may happen on newer devices). | |
438 | */ | |
439 | cdev->private->flags.recog_done = 0; | |
440 | cdev->private->state = DEV_STATE_SENSE_ID; | |
736b5db8 PO |
441 | if (cio_enable_subchannel(sch, (u32) (addr_t) sch)) { |
442 | ccw_device_recog_done(cdev, DEV_STATE_NOT_OPER); | |
443 | return; | |
444 | } | |
1da177e4 | 445 | ccw_device_sense_id_start(cdev); |
1da177e4 LT |
446 | } |
447 | ||
448 | /* | |
39f5360b | 449 | * Handle events for states that use the ccw request infrastructure. |
1da177e4 | 450 | */ |
39f5360b | 451 | static void ccw_device_request_event(struct ccw_device *cdev, enum dev_event e) |
1da177e4 | 452 | { |
39f5360b PO |
453 | switch (e) { |
454 | case DEV_EVENT_NOTOPER: | |
455 | ccw_request_notoper(cdev); | |
1da177e4 | 456 | break; |
39f5360b PO |
457 | case DEV_EVENT_INTERRUPT: |
458 | ccw_request_handler(cdev); | |
459 | break; | |
460 | case DEV_EVENT_TIMEOUT: | |
461 | ccw_request_timeout(cdev); | |
1da177e4 LT |
462 | break; |
463 | default: | |
39f5360b | 464 | break; |
1da177e4 LT |
465 | } |
466 | } | |
467 | ||
1da177e4 LT |
468 | void |
469 | ccw_device_verify_done(struct ccw_device *cdev, int err) | |
470 | { | |
28bdc6f6 PO |
471 | struct subchannel *sch; |
472 | ||
473 | sch = to_subchannel(cdev->dev.parent); | |
474 | /* Update schib - pom may have changed. */ | |
cdb912a4 | 475 | if (cio_update_schib(sch)) { |
7c4d964f PO |
476 | err = -ENODEV; |
477 | goto callback; | |
cdb912a4 | 478 | } |
28bdc6f6 PO |
479 | /* Update lpm with verified path mask. */ |
480 | sch->lpm = sch->vpm; | |
481 | /* Repeat path verification? */ | |
482 | if (cdev->private->flags.doverify) { | |
28bdc6f6 PO |
483 | ccw_device_verify_start(cdev); |
484 | return; | |
485 | } | |
7c4d964f | 486 | callback: |
1da177e4 | 487 | switch (err) { |
1da177e4 LT |
488 | case 0: |
489 | ccw_device_done(cdev, DEV_STATE_ONLINE); | |
490 | /* Deliver fake irb to device driver, if needed. */ | |
491 | if (cdev->private->flags.fake_irb) { | |
492 | memset(&cdev->private->irb, 0, sizeof(struct irb)); | |
23d805b6 PO |
493 | cdev->private->irb.scsw.cmd.cc = 1; |
494 | cdev->private->irb.scsw.cmd.fctl = SCSW_FCTL_START_FUNC; | |
495 | cdev->private->irb.scsw.cmd.actl = SCSW_ACTL_START_PEND; | |
496 | cdev->private->irb.scsw.cmd.stctl = | |
497 | SCSW_STCTL_STATUS_PEND; | |
1da177e4 LT |
498 | cdev->private->flags.fake_irb = 0; |
499 | if (cdev->handler) | |
500 | cdev->handler(cdev, cdev->private->intparm, | |
501 | &cdev->private->irb); | |
502 | memset(&cdev->private->irb, 0, sizeof(struct irb)); | |
503 | } | |
504 | break; | |
505 | case -ETIME: | |
8b42f5c2 PO |
506 | /* Reset oper notify indication after verify error. */ |
507 | cdev->private->flags.donotify = 0; | |
1da177e4 LT |
508 | ccw_device_done(cdev, DEV_STATE_BOXED); |
509 | break; | |
7c4d964f PO |
510 | case -EACCES: |
511 | /* Reset oper notify indication after verify error. */ | |
512 | cdev->private->flags.donotify = 0; | |
513 | ccw_device_done(cdev, DEV_STATE_DISCONNECTED); | |
514 | break; | |
1da177e4 | 515 | default: |
8b42f5c2 PO |
516 | /* Reset oper notify indication after verify error. */ |
517 | cdev->private->flags.donotify = 0; | |
7c4d964f | 518 | ccw_device_done(cdev, DEV_STATE_NOT_OPER); |
1da177e4 LT |
519 | break; |
520 | } | |
521 | } | |
522 | ||
523 | /* | |
524 | * Get device online. | |
525 | */ | |
526 | int | |
527 | ccw_device_online(struct ccw_device *cdev) | |
528 | { | |
529 | struct subchannel *sch; | |
530 | int ret; | |
531 | ||
532 | if ((cdev->private->state != DEV_STATE_OFFLINE) && | |
533 | (cdev->private->state != DEV_STATE_BOXED)) | |
534 | return -EINVAL; | |
535 | sch = to_subchannel(cdev->dev.parent); | |
edf22096 | 536 | ret = cio_enable_subchannel(sch, (u32)(addr_t)sch); |
1da177e4 LT |
537 | if (ret != 0) { |
538 | /* Couldn't enable the subchannel for i/o. Sick device. */ | |
539 | if (ret == -ENODEV) | |
540 | dev_fsm_event(cdev, DEV_EVENT_NOTOPER); | |
541 | return ret; | |
542 | } | |
543 | /* Do we want to do path grouping? */ | |
544 | if (!cdev->private->options.pgroup) { | |
7e560814 CH |
545 | /* Start initial path verification. */ |
546 | cdev->private->state = DEV_STATE_VERIFY; | |
547 | ccw_device_verify_start(cdev); | |
1da177e4 LT |
548 | return 0; |
549 | } | |
550 | /* Do a SensePGID first. */ | |
551 | cdev->private->state = DEV_STATE_SENSE_PGID; | |
552 | ccw_device_sense_pgid_start(cdev); | |
553 | return 0; | |
554 | } | |
555 | ||
556 | void | |
557 | ccw_device_disband_done(struct ccw_device *cdev, int err) | |
558 | { | |
559 | switch (err) { | |
560 | case 0: | |
561 | ccw_device_done(cdev, DEV_STATE_OFFLINE); | |
562 | break; | |
563 | case -ETIME: | |
564 | ccw_device_done(cdev, DEV_STATE_BOXED); | |
565 | break; | |
566 | default: | |
3ecb0a5a | 567 | cdev->private->flags.donotify = 0; |
1da177e4 LT |
568 | ccw_device_done(cdev, DEV_STATE_NOT_OPER); |
569 | break; | |
570 | } | |
571 | } | |
572 | ||
573 | /* | |
574 | * Shutdown device. | |
575 | */ | |
576 | int | |
577 | ccw_device_offline(struct ccw_device *cdev) | |
578 | { | |
579 | struct subchannel *sch; | |
580 | ||
b301ea8c PO |
581 | /* Allow ccw_device_offline while disconnected. */ |
582 | if (cdev->private->state == DEV_STATE_DISCONNECTED || | |
583 | cdev->private->state == DEV_STATE_NOT_OPER) { | |
584 | cdev->private->flags.donotify = 0; | |
585 | ccw_device_done(cdev, DEV_STATE_NOT_OPER); | |
586 | return 0; | |
587 | } | |
102e835d PO |
588 | if (cdev->private->state == DEV_STATE_BOXED) { |
589 | ccw_device_done(cdev, DEV_STATE_BOXED); | |
590 | return 0; | |
591 | } | |
d7b5a4c9 CH |
592 | if (ccw_device_is_orphan(cdev)) { |
593 | ccw_device_done(cdev, DEV_STATE_OFFLINE); | |
594 | return 0; | |
595 | } | |
1da177e4 | 596 | sch = to_subchannel(cdev->dev.parent); |
cdb912a4 | 597 | if (cio_update_schib(sch)) |
1da177e4 | 598 | return -ENODEV; |
23d805b6 | 599 | if (scsw_actl(&sch->schib.scsw) != 0) |
1da177e4 | 600 | return -EBUSY; |
23d805b6 PO |
601 | if (cdev->private->state != DEV_STATE_ONLINE) |
602 | return -EINVAL; | |
1da177e4 LT |
603 | /* Are we doing path grouping? */ |
604 | if (!cdev->private->options.pgroup) { | |
605 | /* No, set state offline immediately. */ | |
606 | ccw_device_done(cdev, DEV_STATE_OFFLINE); | |
607 | return 0; | |
608 | } | |
609 | /* Start Set Path Group commands. */ | |
610 | cdev->private->state = DEV_STATE_DISBAND_PGID; | |
611 | ccw_device_disband_start(cdev); | |
612 | return 0; | |
613 | } | |
614 | ||
1da177e4 | 615 | /* |
3f4cf6e7 | 616 | * Handle not operational event in non-special state. |
1da177e4 | 617 | */ |
3f4cf6e7 CH |
618 | static void ccw_device_generic_notoper(struct ccw_device *cdev, |
619 | enum dev_event dev_event) | |
1da177e4 | 620 | { |
6afcc775 | 621 | if (!ccw_device_notify(cdev, CIO_GONE)) |
37de53bb | 622 | ccw_device_sched_todo(cdev, CDEV_TODO_UNREG); |
6afcc775 PO |
623 | else |
624 | ccw_device_set_disconnected(cdev); | |
1da177e4 LT |
625 | } |
626 | ||
1f1148c8 PO |
627 | /* |
628 | * Handle path verification event in offline state. | |
629 | */ | |
630 | static void ccw_device_offline_verify(struct ccw_device *cdev, | |
631 | enum dev_event dev_event) | |
632 | { | |
633 | struct subchannel *sch = to_subchannel(cdev->dev.parent); | |
634 | ||
635 | css_schedule_eval(sch->schid); | |
636 | } | |
637 | ||
1da177e4 LT |
638 | /* |
639 | * Handle path verification event. | |
640 | */ | |
641 | static void | |
642 | ccw_device_online_verify(struct ccw_device *cdev, enum dev_event dev_event) | |
643 | { | |
644 | struct subchannel *sch; | |
645 | ||
1da177e4 LT |
646 | if (cdev->private->state == DEV_STATE_W4SENSE) { |
647 | cdev->private->flags.doverify = 1; | |
648 | return; | |
649 | } | |
650 | sch = to_subchannel(cdev->dev.parent); | |
651 | /* | |
652 | * Since we might not just be coming from an interrupt from the | |
653 | * subchannel we have to update the schib. | |
654 | */ | |
cdb912a4 SO |
655 | if (cio_update_schib(sch)) { |
656 | ccw_device_verify_done(cdev, -ENODEV); | |
657 | return; | |
658 | } | |
1da177e4 | 659 | |
23d805b6 PO |
660 | if (scsw_actl(&sch->schib.scsw) != 0 || |
661 | (scsw_stctl(&sch->schib.scsw) & SCSW_STCTL_STATUS_PEND) || | |
662 | (scsw_stctl(&cdev->private->irb.scsw) & SCSW_STCTL_STATUS_PEND)) { | |
1da177e4 LT |
663 | /* |
664 | * No final status yet or final status not yet delivered | |
665 | * to the device driver. Can't do path verfication now, | |
666 | * delay until final status was delivered. | |
667 | */ | |
668 | cdev->private->flags.doverify = 1; | |
669 | return; | |
670 | } | |
671 | /* Device is idle, we can do the path verification. */ | |
672 | cdev->private->state = DEV_STATE_VERIFY; | |
673 | ccw_device_verify_start(cdev); | |
674 | } | |
675 | ||
676 | /* | |
677 | * Got an interrupt for a normal io (state online). | |
678 | */ | |
679 | static void | |
680 | ccw_device_irq(struct ccw_device *cdev, enum dev_event dev_event) | |
681 | { | |
682 | struct irb *irb; | |
83262d63 | 683 | int is_cmd; |
1da177e4 LT |
684 | |
685 | irb = (struct irb *) __LC_IRB; | |
83262d63 | 686 | is_cmd = !scsw_is_tm(&irb->scsw); |
1da177e4 | 687 | /* Check for unsolicited interrupt. */ |
23d805b6 | 688 | if (!scsw_is_solicited(&irb->scsw)) { |
83262d63 | 689 | if (is_cmd && (irb->scsw.cmd.dstat & DEV_STAT_UNIT_CHECK) && |
1da177e4 LT |
690 | !irb->esw.esw0.erw.cons) { |
691 | /* Unit check but no sense data. Need basic sense. */ | |
692 | if (ccw_device_do_sense(cdev, irb) != 0) | |
693 | goto call_handler_unsol; | |
e0ec5749 | 694 | memcpy(&cdev->private->irb, irb, sizeof(struct irb)); |
1da177e4 LT |
695 | cdev->private->state = DEV_STATE_W4SENSE; |
696 | cdev->private->intparm = 0; | |
697 | return; | |
698 | } | |
699 | call_handler_unsol: | |
700 | if (cdev->handler) | |
701 | cdev->handler (cdev, 0, irb); | |
18374d37 CH |
702 | if (cdev->private->flags.doverify) |
703 | ccw_device_online_verify(cdev, 0); | |
1da177e4 LT |
704 | return; |
705 | } | |
706 | /* Accumulate status and find out if a basic sense is needed. */ | |
707 | ccw_device_accumulate_irb(cdev, irb); | |
83262d63 | 708 | if (is_cmd && cdev->private->flags.dosense) { |
1da177e4 LT |
709 | if (ccw_device_do_sense(cdev, irb) == 0) { |
710 | cdev->private->state = DEV_STATE_W4SENSE; | |
711 | } | |
712 | return; | |
713 | } | |
714 | /* Call the handler. */ | |
715 | if (ccw_device_call_handler(cdev) && cdev->private->flags.doverify) | |
716 | /* Start delayed path verification. */ | |
717 | ccw_device_online_verify(cdev, 0); | |
718 | } | |
719 | ||
720 | /* | |
721 | * Got an timeout in online state. | |
722 | */ | |
723 | static void | |
724 | ccw_device_online_timeout(struct ccw_device *cdev, enum dev_event dev_event) | |
725 | { | |
726 | int ret; | |
727 | ||
728 | ccw_device_set_timeout(cdev, 0); | |
729 | ret = ccw_device_cancel_halt_clear(cdev); | |
730 | if (ret == -EBUSY) { | |
731 | ccw_device_set_timeout(cdev, 3*HZ); | |
732 | cdev->private->state = DEV_STATE_TIMEOUT_KILL; | |
733 | return; | |
734 | } | |
3f4cf6e7 CH |
735 | if (ret == -ENODEV) |
736 | dev_fsm_event(cdev, DEV_EVENT_NOTOPER); | |
737 | else if (cdev->handler) | |
1da177e4 LT |
738 | cdev->handler(cdev, cdev->private->intparm, |
739 | ERR_PTR(-ETIMEDOUT)); | |
740 | } | |
741 | ||
742 | /* | |
743 | * Got an interrupt for a basic sense. | |
744 | */ | |
2b67fc46 | 745 | static void |
1da177e4 LT |
746 | ccw_device_w4sense(struct ccw_device *cdev, enum dev_event dev_event) |
747 | { | |
748 | struct irb *irb; | |
749 | ||
750 | irb = (struct irb *) __LC_IRB; | |
751 | /* Check for unsolicited interrupt. */ | |
23d805b6 PO |
752 | if (scsw_stctl(&irb->scsw) == |
753 | (SCSW_STCTL_STATUS_PEND | SCSW_STCTL_ALERT_STATUS)) { | |
754 | if (scsw_cc(&irb->scsw) == 1) | |
1da177e4 LT |
755 | /* Basic sense hasn't started. Try again. */ |
756 | ccw_device_do_sense(cdev, irb); | |
757 | else { | |
139b83dd | 758 | CIO_MSG_EVENT(0, "0.%x.%04x: unsolicited " |
e556bbbd CH |
759 | "interrupt during w4sense...\n", |
760 | cdev->private->dev_id.ssid, | |
761 | cdev->private->dev_id.devno); | |
1da177e4 LT |
762 | if (cdev->handler) |
763 | cdev->handler (cdev, 0, irb); | |
764 | } | |
765 | return; | |
766 | } | |
3ba1998e CH |
767 | /* |
768 | * Check if a halt or clear has been issued in the meanwhile. If yes, | |
769 | * only deliver the halt/clear interrupt to the device driver as if it | |
770 | * had killed the original request. | |
771 | */ | |
23d805b6 PO |
772 | if (scsw_fctl(&irb->scsw) & |
773 | (SCSW_FCTL_CLEAR_FUNC | SCSW_FCTL_HALT_FUNC)) { | |
3ba1998e CH |
774 | cdev->private->flags.dosense = 0; |
775 | memset(&cdev->private->irb, 0, sizeof(struct irb)); | |
776 | ccw_device_accumulate_irb(cdev, irb); | |
777 | goto call_handler; | |
778 | } | |
1da177e4 LT |
779 | /* Add basic sense info to irb. */ |
780 | ccw_device_accumulate_basic_sense(cdev, irb); | |
781 | if (cdev->private->flags.dosense) { | |
782 | /* Another basic sense is needed. */ | |
783 | ccw_device_do_sense(cdev, irb); | |
784 | return; | |
785 | } | |
3ba1998e | 786 | call_handler: |
1da177e4 | 787 | cdev->private->state = DEV_STATE_ONLINE; |
217ee6c6 ME |
788 | /* In case sensing interfered with setting the device online */ |
789 | wake_up(&cdev->private->wait_q); | |
1da177e4 LT |
790 | /* Call the handler. */ |
791 | if (ccw_device_call_handler(cdev) && cdev->private->flags.doverify) | |
792 | /* Start delayed path verification. */ | |
793 | ccw_device_online_verify(cdev, 0); | |
794 | } | |
795 | ||
1da177e4 LT |
796 | static void |
797 | ccw_device_killing_irq(struct ccw_device *cdev, enum dev_event dev_event) | |
798 | { | |
799 | struct subchannel *sch; | |
800 | ||
801 | sch = to_subchannel(cdev->dev.parent); | |
802 | ccw_device_set_timeout(cdev, 0); | |
7c8427c3 CH |
803 | /* Start delayed path verification. */ |
804 | ccw_device_online_verify(cdev, 0); | |
1da177e4 | 805 | /* OK, i/o is dead now. Call interrupt handler. */ |
1da177e4 LT |
806 | if (cdev->handler) |
807 | cdev->handler(cdev, cdev->private->intparm, | |
e7769b48 | 808 | ERR_PTR(-EIO)); |
1da177e4 LT |
809 | } |
810 | ||
811 | static void | |
812 | ccw_device_killing_timeout(struct ccw_device *cdev, enum dev_event dev_event) | |
813 | { | |
814 | int ret; | |
815 | ||
816 | ret = ccw_device_cancel_halt_clear(cdev); | |
817 | if (ret == -EBUSY) { | |
818 | ccw_device_set_timeout(cdev, 3*HZ); | |
819 | return; | |
820 | } | |
7c8427c3 CH |
821 | /* Start delayed path verification. */ |
822 | ccw_device_online_verify(cdev, 0); | |
1da177e4 LT |
823 | if (cdev->handler) |
824 | cdev->handler(cdev, cdev->private->intparm, | |
e7769b48 | 825 | ERR_PTR(-EIO)); |
1da177e4 LT |
826 | } |
827 | ||
c820de39 | 828 | void ccw_device_kill_io(struct ccw_device *cdev) |
1da177e4 LT |
829 | { |
830 | int ret; | |
1da177e4 | 831 | |
1da177e4 LT |
832 | ret = ccw_device_cancel_halt_clear(cdev); |
833 | if (ret == -EBUSY) { | |
834 | ccw_device_set_timeout(cdev, 3*HZ); | |
835 | cdev->private->state = DEV_STATE_TIMEOUT_KILL; | |
836 | return; | |
837 | } | |
7c8427c3 CH |
838 | /* Start delayed path verification. */ |
839 | ccw_device_online_verify(cdev, 0); | |
1da177e4 LT |
840 | if (cdev->handler) |
841 | cdev->handler(cdev, cdev->private->intparm, | |
e7769b48 | 842 | ERR_PTR(-EIO)); |
1da177e4 LT |
843 | } |
844 | ||
845 | static void | |
28bdc6f6 | 846 | ccw_device_delay_verify(struct ccw_device *cdev, enum dev_event dev_event) |
1da177e4 | 847 | { |
28bdc6f6 | 848 | /* Start verification after current task finished. */ |
7e560814 | 849 | cdev->private->flags.doverify = 1; |
1da177e4 LT |
850 | } |
851 | ||
852 | static void | |
853 | ccw_device_stlck_done(struct ccw_device *cdev, enum dev_event dev_event) | |
854 | { | |
855 | struct irb *irb; | |
856 | ||
857 | switch (dev_event) { | |
858 | case DEV_EVENT_INTERRUPT: | |
859 | irb = (struct irb *) __LC_IRB; | |
860 | /* Check for unsolicited interrupt. */ | |
23d805b6 | 861 | if ((scsw_stctl(&irb->scsw) == |
1da177e4 | 862 | (SCSW_STCTL_STATUS_PEND | SCSW_STCTL_ALERT_STATUS)) && |
23d805b6 | 863 | (!scsw_cc(&irb->scsw))) |
1da177e4 LT |
864 | /* FIXME: we should restart stlck here, but this |
865 | * is extremely unlikely ... */ | |
866 | goto out_wakeup; | |
867 | ||
868 | ccw_device_accumulate_irb(cdev, irb); | |
869 | /* We don't care about basic sense etc. */ | |
870 | break; | |
871 | default: /* timeout */ | |
872 | break; | |
873 | } | |
874 | out_wakeup: | |
875 | wake_up(&cdev->private->wait_q); | |
876 | } | |
877 | ||
878 | static void | |
879 | ccw_device_start_id(struct ccw_device *cdev, enum dev_event dev_event) | |
880 | { | |
881 | struct subchannel *sch; | |
882 | ||
883 | sch = to_subchannel(cdev->dev.parent); | |
edf22096 | 884 | if (cio_enable_subchannel(sch, (u32)(addr_t)sch) != 0) |
1da177e4 LT |
885 | /* Couldn't enable the subchannel for i/o. Sick device. */ |
886 | return; | |
1da177e4 LT |
887 | cdev->private->state = DEV_STATE_DISCONNECTED_SENSE_ID; |
888 | ccw_device_sense_id_start(cdev); | |
889 | } | |
890 | ||
c820de39 | 891 | void ccw_device_trigger_reprobe(struct ccw_device *cdev) |
1da177e4 | 892 | { |
c820de39 | 893 | struct subchannel *sch; |
1da177e4 | 894 | |
1da177e4 LT |
895 | if (cdev->private->state != DEV_STATE_DISCONNECTED) |
896 | return; | |
897 | ||
c820de39 | 898 | sch = to_subchannel(cdev->dev.parent); |
1da177e4 | 899 | /* Update some values. */ |
cdb912a4 | 900 | if (cio_update_schib(sch)) |
7674da77 | 901 | return; |
1da177e4 LT |
902 | /* |
903 | * The pim, pam, pom values may not be accurate, but they are the best | |
904 | * we have before performing device selection :/ | |
905 | */ | |
28bdc6f6 | 906 | sch->lpm = sch->schib.pmcw.pam & sch->opm; |
13952ec1 SO |
907 | /* |
908 | * Use the initial configuration since we can't be shure that the old | |
909 | * paths are valid. | |
910 | */ | |
911 | io_subchannel_init_config(sch); | |
f444cc0e SO |
912 | if (cio_commit_config(sch)) |
913 | return; | |
13952ec1 | 914 | |
1da177e4 | 915 | /* We should also udate ssd info, but this has to wait. */ |
d7b5a4c9 | 916 | /* Check if this is another device which appeared on the same sch. */ |
5d6e6b6f PO |
917 | if (sch->schib.pmcw.dev != cdev->private->dev_id.devno) |
918 | css_schedule_eval(sch->schid); | |
919 | else | |
d7b5a4c9 | 920 | ccw_device_start_id(cdev, 0); |
1da177e4 LT |
921 | } |
922 | ||
16b9a057 PO |
923 | static void ccw_device_disabled_irq(struct ccw_device *cdev, |
924 | enum dev_event dev_event) | |
1da177e4 LT |
925 | { |
926 | struct subchannel *sch; | |
927 | ||
928 | sch = to_subchannel(cdev->dev.parent); | |
929 | /* | |
16b9a057 | 930 | * An interrupt in a disabled state means a previous disable was not |
ed04b892 | 931 | * successful - should not happen, but we try to disable again. |
1da177e4 LT |
932 | */ |
933 | cio_disable_subchannel(sch); | |
934 | } | |
935 | ||
936 | static void | |
937 | ccw_device_change_cmfstate(struct ccw_device *cdev, enum dev_event dev_event) | |
938 | { | |
939 | retry_set_schib(cdev); | |
940 | cdev->private->state = DEV_STATE_ONLINE; | |
941 | dev_fsm_event(cdev, dev_event); | |
942 | } | |
943 | ||
94bb0633 CH |
944 | static void ccw_device_update_cmfblock(struct ccw_device *cdev, |
945 | enum dev_event dev_event) | |
946 | { | |
947 | cmf_retry_copy_block(cdev); | |
948 | cdev->private->state = DEV_STATE_ONLINE; | |
949 | dev_fsm_event(cdev, dev_event); | |
950 | } | |
1da177e4 LT |
951 | |
952 | static void | |
953 | ccw_device_quiesce_done(struct ccw_device *cdev, enum dev_event dev_event) | |
954 | { | |
955 | ccw_device_set_timeout(cdev, 0); | |
956 | if (dev_event == DEV_EVENT_NOTOPER) | |
957 | cdev->private->state = DEV_STATE_NOT_OPER; | |
958 | else | |
959 | cdev->private->state = DEV_STATE_OFFLINE; | |
960 | wake_up(&cdev->private->wait_q); | |
961 | } | |
962 | ||
963 | static void | |
964 | ccw_device_quiesce_timeout(struct ccw_device *cdev, enum dev_event dev_event) | |
965 | { | |
966 | int ret; | |
967 | ||
968 | ret = ccw_device_cancel_halt_clear(cdev); | |
969 | switch (ret) { | |
970 | case 0: | |
971 | cdev->private->state = DEV_STATE_OFFLINE; | |
972 | wake_up(&cdev->private->wait_q); | |
973 | break; | |
974 | case -ENODEV: | |
975 | cdev->private->state = DEV_STATE_NOT_OPER; | |
976 | wake_up(&cdev->private->wait_q); | |
977 | break; | |
978 | default: | |
979 | ccw_device_set_timeout(cdev, HZ/10); | |
980 | } | |
981 | } | |
982 | ||
983 | /* | |
984 | * No operation action. This is used e.g. to ignore a timeout event in | |
985 | * state offline. | |
986 | */ | |
987 | static void | |
988 | ccw_device_nop(struct ccw_device *cdev, enum dev_event dev_event) | |
989 | { | |
990 | } | |
991 | ||
1da177e4 LT |
992 | /* |
993 | * device statemachine | |
994 | */ | |
995 | fsm_func_t *dev_jumptable[NR_DEV_STATES][NR_DEV_EVENTS] = { | |
996 | [DEV_STATE_NOT_OPER] = { | |
997 | [DEV_EVENT_NOTOPER] = ccw_device_nop, | |
16b9a057 | 998 | [DEV_EVENT_INTERRUPT] = ccw_device_disabled_irq, |
1da177e4 LT |
999 | [DEV_EVENT_TIMEOUT] = ccw_device_nop, |
1000 | [DEV_EVENT_VERIFY] = ccw_device_nop, | |
1001 | }, | |
1002 | [DEV_STATE_SENSE_PGID] = { | |
9679baaf PO |
1003 | [DEV_EVENT_NOTOPER] = ccw_device_request_event, |
1004 | [DEV_EVENT_INTERRUPT] = ccw_device_request_event, | |
1005 | [DEV_EVENT_TIMEOUT] = ccw_device_request_event, | |
1da177e4 LT |
1006 | [DEV_EVENT_VERIFY] = ccw_device_nop, |
1007 | }, | |
1008 | [DEV_STATE_SENSE_ID] = { | |
39f5360b PO |
1009 | [DEV_EVENT_NOTOPER] = ccw_device_request_event, |
1010 | [DEV_EVENT_INTERRUPT] = ccw_device_request_event, | |
1011 | [DEV_EVENT_TIMEOUT] = ccw_device_request_event, | |
1da177e4 LT |
1012 | [DEV_EVENT_VERIFY] = ccw_device_nop, |
1013 | }, | |
1014 | [DEV_STATE_OFFLINE] = { | |
3f4cf6e7 | 1015 | [DEV_EVENT_NOTOPER] = ccw_device_generic_notoper, |
16b9a057 | 1016 | [DEV_EVENT_INTERRUPT] = ccw_device_disabled_irq, |
1da177e4 | 1017 | [DEV_EVENT_TIMEOUT] = ccw_device_nop, |
1f1148c8 | 1018 | [DEV_EVENT_VERIFY] = ccw_device_offline_verify, |
1da177e4 LT |
1019 | }, |
1020 | [DEV_STATE_VERIFY] = { | |
9679baaf PO |
1021 | [DEV_EVENT_NOTOPER] = ccw_device_request_event, |
1022 | [DEV_EVENT_INTERRUPT] = ccw_device_request_event, | |
1023 | [DEV_EVENT_TIMEOUT] = ccw_device_request_event, | |
28bdc6f6 | 1024 | [DEV_EVENT_VERIFY] = ccw_device_delay_verify, |
1da177e4 LT |
1025 | }, |
1026 | [DEV_STATE_ONLINE] = { | |
3f4cf6e7 | 1027 | [DEV_EVENT_NOTOPER] = ccw_device_generic_notoper, |
1da177e4 LT |
1028 | [DEV_EVENT_INTERRUPT] = ccw_device_irq, |
1029 | [DEV_EVENT_TIMEOUT] = ccw_device_online_timeout, | |
1030 | [DEV_EVENT_VERIFY] = ccw_device_online_verify, | |
1031 | }, | |
1032 | [DEV_STATE_W4SENSE] = { | |
3f4cf6e7 | 1033 | [DEV_EVENT_NOTOPER] = ccw_device_generic_notoper, |
1da177e4 LT |
1034 | [DEV_EVENT_INTERRUPT] = ccw_device_w4sense, |
1035 | [DEV_EVENT_TIMEOUT] = ccw_device_nop, | |
1036 | [DEV_EVENT_VERIFY] = ccw_device_online_verify, | |
1037 | }, | |
1038 | [DEV_STATE_DISBAND_PGID] = { | |
9679baaf PO |
1039 | [DEV_EVENT_NOTOPER] = ccw_device_request_event, |
1040 | [DEV_EVENT_INTERRUPT] = ccw_device_request_event, | |
1041 | [DEV_EVENT_TIMEOUT] = ccw_device_request_event, | |
1da177e4 LT |
1042 | [DEV_EVENT_VERIFY] = ccw_device_nop, |
1043 | }, | |
1044 | [DEV_STATE_BOXED] = { | |
3f4cf6e7 | 1045 | [DEV_EVENT_NOTOPER] = ccw_device_generic_notoper, |
1da177e4 LT |
1046 | [DEV_EVENT_INTERRUPT] = ccw_device_stlck_done, |
1047 | [DEV_EVENT_TIMEOUT] = ccw_device_stlck_done, | |
1048 | [DEV_EVENT_VERIFY] = ccw_device_nop, | |
1049 | }, | |
1050 | /* states to wait for i/o completion before doing something */ | |
1da177e4 | 1051 | [DEV_STATE_TIMEOUT_KILL] = { |
3f4cf6e7 | 1052 | [DEV_EVENT_NOTOPER] = ccw_device_generic_notoper, |
1da177e4 LT |
1053 | [DEV_EVENT_INTERRUPT] = ccw_device_killing_irq, |
1054 | [DEV_EVENT_TIMEOUT] = ccw_device_killing_timeout, | |
1055 | [DEV_EVENT_VERIFY] = ccw_device_nop, //FIXME | |
1056 | }, | |
1da177e4 LT |
1057 | [DEV_STATE_QUIESCE] = { |
1058 | [DEV_EVENT_NOTOPER] = ccw_device_quiesce_done, | |
1059 | [DEV_EVENT_INTERRUPT] = ccw_device_quiesce_done, | |
1060 | [DEV_EVENT_TIMEOUT] = ccw_device_quiesce_timeout, | |
1061 | [DEV_EVENT_VERIFY] = ccw_device_nop, | |
1062 | }, | |
1063 | /* special states for devices gone not operational */ | |
1064 | [DEV_STATE_DISCONNECTED] = { | |
1065 | [DEV_EVENT_NOTOPER] = ccw_device_nop, | |
1066 | [DEV_EVENT_INTERRUPT] = ccw_device_start_id, | |
16b9a057 | 1067 | [DEV_EVENT_TIMEOUT] = ccw_device_nop, |
28bdc6f6 | 1068 | [DEV_EVENT_VERIFY] = ccw_device_start_id, |
1da177e4 LT |
1069 | }, |
1070 | [DEV_STATE_DISCONNECTED_SENSE_ID] = { | |
39f5360b PO |
1071 | [DEV_EVENT_NOTOPER] = ccw_device_request_event, |
1072 | [DEV_EVENT_INTERRUPT] = ccw_device_request_event, | |
1073 | [DEV_EVENT_TIMEOUT] = ccw_device_request_event, | |
1da177e4 LT |
1074 | [DEV_EVENT_VERIFY] = ccw_device_nop, |
1075 | }, | |
1076 | [DEV_STATE_CMFCHANGE] = { | |
1077 | [DEV_EVENT_NOTOPER] = ccw_device_change_cmfstate, | |
1078 | [DEV_EVENT_INTERRUPT] = ccw_device_change_cmfstate, | |
1079 | [DEV_EVENT_TIMEOUT] = ccw_device_change_cmfstate, | |
1080 | [DEV_EVENT_VERIFY] = ccw_device_change_cmfstate, | |
1081 | }, | |
94bb0633 CH |
1082 | [DEV_STATE_CMFUPDATE] = { |
1083 | [DEV_EVENT_NOTOPER] = ccw_device_update_cmfblock, | |
1084 | [DEV_EVENT_INTERRUPT] = ccw_device_update_cmfblock, | |
1085 | [DEV_EVENT_TIMEOUT] = ccw_device_update_cmfblock, | |
1086 | [DEV_EVENT_VERIFY] = ccw_device_update_cmfblock, | |
1087 | }, | |
1da177e4 LT |
1088 | }; |
1089 | ||
1da177e4 | 1090 | EXPORT_SYMBOL_GPL(ccw_device_set_timeout); |