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-rw-r--r--Documentation/feature-removal-schedule.txt16
-rw-r--r--drivers/s390/cio/device_ops.c250
-rw-r--r--include/asm-s390/ccwdev.h5
3 files changed, 0 insertions, 271 deletions
diff --git a/Documentation/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt
index c175eedadb5f..a43d2878a4ef 100644
--- a/Documentation/feature-removal-schedule.txt
+++ b/Documentation/feature-removal-schedule.txt
@@ -211,22 +211,6 @@ Who: Richard Purdie <rpurdie@rpsys.net>
211 211
212--------------------------- 212---------------------------
213 213
214What: read_dev_chars(), read_conf_data{,_lpm}() (s390 common I/O layer)
215When: December 2007
216Why: These functions are a leftover from 2.4 times. They have several
217 problems:
218 - Duplication of checks that are done in the device driver's
219 interrupt handler
220 - common I/O layer can't do device specific error recovery
221 - device driver can't be notified for conditions happening during
222 execution of the function
223 Device drivers should issue the read device characteristics and read
224 configuration data ccws and do the appropriate error handling
225 themselves.
226Who: Cornelia Huck <cornelia.huck@de.ibm.com>
227
228---------------------------
229
230What: i2c-ixp2000, i2c-ixp4xx and scx200_i2c drivers 214What: i2c-ixp2000, i2c-ixp4xx and scx200_i2c drivers
231When: September 2007 215When: September 2007
232Why: Obsolete. The new i2c-gpio driver replaces all hardware-specific 216Why: Obsolete. The new i2c-gpio driver replaces all hardware-specific
diff --git a/drivers/s390/cio/device_ops.c b/drivers/s390/cio/device_ops.c
index c8cfbf161d44..14eba854b155 100644
--- a/drivers/s390/cio/device_ops.c
+++ b/drivers/s390/cio/device_ops.c
@@ -288,253 +288,6 @@ ccw_device_get_path_mask(struct ccw_device *cdev)
288 return sch->lpm; 288 return sch->lpm;
289} 289}
290 290
291static void
292ccw_device_wake_up(struct ccw_device *cdev, unsigned long ip, struct irb *irb)
293{
294 if (!ip)
295 /* unsolicited interrupt */
296 return;
297
298 /* Abuse intparm for error reporting. */
299 if (IS_ERR(irb))
300 cdev->private->intparm = -EIO;
301 else if (irb->scsw.cc == 1)
302 /* Retry for deferred condition code. */
303 cdev->private->intparm = -EAGAIN;
304 else if ((irb->scsw.dstat !=
305 (DEV_STAT_CHN_END|DEV_STAT_DEV_END)) ||
306 (irb->scsw.cstat != 0)) {
307 /*
308 * We didn't get channel end / device end. Check if path
309 * verification has been started; we can retry after it has
310 * finished. We also retry unit checks except for command reject
311 * or intervention required. Also check for long busy
312 * conditions.
313 */
314 if (cdev->private->flags.doverify ||
315 cdev->private->state == DEV_STATE_VERIFY)
316 cdev->private->intparm = -EAGAIN;
317 else if ((irb->scsw.dstat & DEV_STAT_UNIT_CHECK) &&
318 !(irb->ecw[0] &
319 (SNS0_CMD_REJECT | SNS0_INTERVENTION_REQ)))
320 cdev->private->intparm = -EAGAIN;
321 else if ((irb->scsw.dstat & DEV_STAT_ATTENTION) &&
322 (irb->scsw.dstat & DEV_STAT_DEV_END) &&
323 (irb->scsw.dstat & DEV_STAT_UNIT_EXCEP))
324 cdev->private->intparm = -EAGAIN;
325 else
326 cdev->private->intparm = -EIO;
327
328 } else
329 cdev->private->intparm = 0;
330 wake_up(&cdev->private->wait_q);
331}
332
333static int
334__ccw_device_retry_loop(struct ccw_device *cdev, struct ccw1 *ccw, long magic, __u8 lpm)
335{
336 int ret;
337 struct subchannel *sch;
338
339 sch = to_subchannel(cdev->dev.parent);
340 do {
341 ccw_device_set_timeout(cdev, 60 * HZ);
342 ret = cio_start (sch, ccw, lpm);
343 if (ret != 0)
344 ccw_device_set_timeout(cdev, 0);
345 if (ret == -EBUSY) {
346 /* Try again later. */
347 spin_unlock_irq(sch->lock);
348 msleep(10);
349 spin_lock_irq(sch->lock);
350 continue;
351 }
352 if (ret != 0)
353 /* Non-retryable error. */
354 break;
355 /* Wait for end of request. */
356 cdev->private->intparm = magic;
357 spin_unlock_irq(sch->lock);
358 wait_event(cdev->private->wait_q,
359 (cdev->private->intparm == -EIO) ||
360 (cdev->private->intparm == -EAGAIN) ||
361 (cdev->private->intparm == 0));
362 spin_lock_irq(sch->lock);
363 /* Check at least for channel end / device end */
364 if (cdev->private->intparm == -EIO) {
365 /* Non-retryable error. */
366 ret = -EIO;
367 break;
368 }
369 if (cdev->private->intparm == 0)
370 /* Success. */
371 break;
372 /* Try again later. */
373 spin_unlock_irq(sch->lock);
374 msleep(10);
375 spin_lock_irq(sch->lock);
376 } while (1);
377
378 return ret;
379}
380
381/**
382 * read_dev_chars() - read device characteristics
383 * @param cdev target ccw device
384 * @param buffer pointer to buffer for rdc data
385 * @param length size of rdc data
386 * @returns 0 for success, negative error value on failure
387 *
388 * Context:
389 * called for online device, lock not held
390 **/
391int
392read_dev_chars (struct ccw_device *cdev, void **buffer, int length)
393{
394 void (*handler)(struct ccw_device *, unsigned long, struct irb *);
395 struct subchannel *sch;
396 int ret;
397 struct ccw1 *rdc_ccw;
398
399 if (!cdev)
400 return -ENODEV;
401 if (!buffer || !length)
402 return -EINVAL;
403 sch = to_subchannel(cdev->dev.parent);
404
405 CIO_TRACE_EVENT (4, "rddevch");
406 CIO_TRACE_EVENT (4, sch->dev.bus_id);
407
408 rdc_ccw = kzalloc(sizeof(struct ccw1), GFP_KERNEL | GFP_DMA);
409 if (!rdc_ccw)
410 return -ENOMEM;
411 rdc_ccw->cmd_code = CCW_CMD_RDC;
412 rdc_ccw->count = length;
413 rdc_ccw->flags = CCW_FLAG_SLI;
414 ret = set_normalized_cda (rdc_ccw, (*buffer));
415 if (ret != 0) {
416 kfree(rdc_ccw);
417 return ret;
418 }
419
420 spin_lock_irq(sch->lock);
421 /* Save interrupt handler. */
422 handler = cdev->handler;
423 /* Temporarily install own handler. */
424 cdev->handler = ccw_device_wake_up;
425 if (cdev->private->state != DEV_STATE_ONLINE)
426 ret = -ENODEV;
427 else if (((sch->schib.scsw.stctl & SCSW_STCTL_PRIM_STATUS) &&
428 !(sch->schib.scsw.stctl & SCSW_STCTL_SEC_STATUS)) ||
429 cdev->private->flags.doverify)
430 ret = -EBUSY;
431 else
432 /* 0x00D9C4C3 == ebcdic "RDC" */
433 ret = __ccw_device_retry_loop(cdev, rdc_ccw, 0x00D9C4C3, 0);
434
435 /* Restore interrupt handler. */
436 cdev->handler = handler;
437 spin_unlock_irq(sch->lock);
438
439 clear_normalized_cda (rdc_ccw);
440 kfree(rdc_ccw);
441
442 return ret;
443}
444
445/*
446 * Read Configuration data using path mask
447 */
448int
449read_conf_data_lpm (struct ccw_device *cdev, void **buffer, int *length, __u8 lpm)
450{
451 void (*handler)(struct ccw_device *, unsigned long, struct irb *);
452 struct subchannel *sch;
453 struct ciw *ciw;
454 char *rcd_buf;
455 int ret;
456 struct ccw1 *rcd_ccw;
457
458 if (!cdev)
459 return -ENODEV;
460 if (!buffer || !length)
461 return -EINVAL;
462 sch = to_subchannel(cdev->dev.parent);
463
464 CIO_TRACE_EVENT (4, "rdconf");
465 CIO_TRACE_EVENT (4, sch->dev.bus_id);
466
467 /*
468 * scan for RCD command in extended SenseID data
469 */
470 ciw = ccw_device_get_ciw(cdev, CIW_TYPE_RCD);
471 if (!ciw || ciw->cmd == 0)
472 return -EOPNOTSUPP;
473
474 /* Adjust requested path mask to excluded varied off paths. */
475 if (lpm) {
476 lpm &= sch->opm;
477 if (lpm == 0)
478 return -EACCES;
479 }
480
481 rcd_ccw = kzalloc(sizeof(struct ccw1), GFP_KERNEL | GFP_DMA);
482 if (!rcd_ccw)
483 return -ENOMEM;
484 rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
485 if (!rcd_buf) {
486 kfree(rcd_ccw);
487 return -ENOMEM;
488 }
489 rcd_ccw->cmd_code = ciw->cmd;
490 rcd_ccw->cda = (__u32) __pa (rcd_buf);
491 rcd_ccw->count = ciw->count;
492 rcd_ccw->flags = CCW_FLAG_SLI;
493
494 spin_lock_irq(sch->lock);
495 /* Save interrupt handler. */
496 handler = cdev->handler;
497 /* Temporarily install own handler. */
498 cdev->handler = ccw_device_wake_up;
499 if (cdev->private->state != DEV_STATE_ONLINE)
500 ret = -ENODEV;
501 else if (((sch->schib.scsw.stctl & SCSW_STCTL_PRIM_STATUS) &&
502 !(sch->schib.scsw.stctl & SCSW_STCTL_SEC_STATUS)) ||
503 cdev->private->flags.doverify)
504 ret = -EBUSY;
505 else
506 /* 0x00D9C3C4 == ebcdic "RCD" */
507 ret = __ccw_device_retry_loop(cdev, rcd_ccw, 0x00D9C3C4, lpm);
508
509 /* Restore interrupt handler. */
510 cdev->handler = handler;
511 spin_unlock_irq(sch->lock);
512
513 /*
514 * on success we update the user input parms
515 */
516 if (ret) {
517 kfree (rcd_buf);
518 *buffer = NULL;
519 *length = 0;
520 } else {
521 *length = ciw->count;
522 *buffer = rcd_buf;
523 }
524 kfree(rcd_ccw);
525
526 return ret;
527}
528
529/*
530 * Read Configuration data
531 */
532int
533read_conf_data (struct ccw_device *cdev, void **buffer, int *length)
534{
535 return read_conf_data_lpm (cdev, buffer, length, 0);
536}
537
538/* 291/*
539 * Try to break the lock on a boxed device. 292 * Try to break the lock on a boxed device.
540 */ 293 */
@@ -649,8 +402,5 @@ EXPORT_SYMBOL(ccw_device_start_timeout_key);
649EXPORT_SYMBOL(ccw_device_start_key); 402EXPORT_SYMBOL(ccw_device_start_key);
650EXPORT_SYMBOL(ccw_device_get_ciw); 403EXPORT_SYMBOL(ccw_device_get_ciw);
651EXPORT_SYMBOL(ccw_device_get_path_mask); 404EXPORT_SYMBOL(ccw_device_get_path_mask);
652EXPORT_SYMBOL(read_conf_data);
653EXPORT_SYMBOL(read_dev_chars);
654EXPORT_SYMBOL(_ccw_device_get_subchannel_number); 405EXPORT_SYMBOL(_ccw_device_get_subchannel_number);
655EXPORT_SYMBOL_GPL(ccw_device_get_chp_desc); 406EXPORT_SYMBOL_GPL(ccw_device_get_chp_desc);
656EXPORT_SYMBOL_GPL(read_conf_data_lpm);
diff --git a/include/asm-s390/ccwdev.h b/include/asm-s390/ccwdev.h
index 4c2e1710f157..1aeda27d5a8b 100644
--- a/include/asm-s390/ccwdev.h
+++ b/include/asm-s390/ccwdev.h
@@ -165,11 +165,6 @@ extern int ccw_device_resume(struct ccw_device *);
165extern int ccw_device_halt(struct ccw_device *, unsigned long); 165extern int ccw_device_halt(struct ccw_device *, unsigned long);
166extern int ccw_device_clear(struct ccw_device *, unsigned long); 166extern int ccw_device_clear(struct ccw_device *, unsigned long);
167 167
168extern int __deprecated read_dev_chars(struct ccw_device *cdev, void **buffer, int length);
169extern int __deprecated read_conf_data(struct ccw_device *cdev, void **buffer, int *length);
170extern int __deprecated read_conf_data_lpm(struct ccw_device *cdev, void **buffer,
171 int *length, __u8 lpm);
172
173extern int ccw_device_set_online(struct ccw_device *cdev); 168extern int ccw_device_set_online(struct ccw_device *cdev);
174extern int ccw_device_set_offline(struct ccw_device *cdev); 169extern int ccw_device_set_offline(struct ccw_device *cdev);
175 170
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