29 static void verify_start(struct ccw_device *cdev);
34 static void verify_done(struct ccw_device *cdev, int rc)  in verify_done()  argument
36 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in verify_done()
37 	struct ccw_dev_id *id = &cdev->private->dev_id;  in verify_done()
38 	int mpath = cdev->private->flags.mpath;  in verify_done()
39 	int pgroup = cdev->private->flags.pgroup;  in verify_done()
52 	ccw_device_verify_done(cdev, rc);  in verify_done()
58 static void nop_build_cp(struct ccw_device *cdev)  in nop_build_cp()  argument
60 	struct ccw_request *req = &cdev->private->req;  in nop_build_cp()
61 	struct ccw1 *cp = cdev->private->dma_area->iccws;  in nop_build_cp()
73 static void nop_do(struct ccw_device *cdev)  in nop_do()  argument
75 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in nop_do()
76 	struct ccw_request *req = &cdev->private->req;  in nop_do()
79 			      ~cdev->private->path_noirq_mask);  in nop_do()
82 	nop_build_cp(cdev);  in nop_do()
83 	ccw_request_start(cdev);  in nop_do()
87 	verify_done(cdev, sch->vpm ? 0 : -EACCES);  in nop_do()
93 static enum io_status nop_filter(struct ccw_device *cdev, void *data,  in nop_filter()  argument
105 static void nop_callback(struct ccw_device *cdev, void *data, int rc)  in nop_callback()  argument
107 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in nop_callback()
108 	struct ccw_request *req = &cdev->private->req;  in nop_callback()
115 		cdev->private->path_noirq_mask |= req->lpm;  in nop_callback()
118 		cdev->private->path_notoper_mask |= req->lpm;  in nop_callback()
125 	nop_do(cdev);  in nop_callback()
129 	verify_done(cdev, rc);  in nop_callback()
135 static void spid_build_cp(struct ccw_device *cdev, u8 fn)  in spid_build_cp()  argument
137 	struct ccw_request *req = &cdev->private->req;  in spid_build_cp()
138 	struct ccw1 *cp = cdev->private->dma_area->iccws;  in spid_build_cp()
140 	struct pgid *pgid = &cdev->private->dma_area->pgid[i];  in spid_build_cp()
150 static void pgid_wipeout_callback(struct ccw_device *cdev, void *data, int rc)  in pgid_wipeout_callback()  argument
154 		verify_done(cdev, rc);  in pgid_wipeout_callback()
161 	cdev->private->flags.pgid_unknown = 0;  in pgid_wipeout_callback()
162 	verify_start(cdev);  in pgid_wipeout_callback()
168 static void pgid_wipeout_start(struct ccw_device *cdev)  in pgid_wipeout_start()  argument
170 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in pgid_wipeout_start()
171 	struct ccw_dev_id *id = &cdev->private->dev_id;  in pgid_wipeout_start()
172 	struct ccw_request *req = &cdev->private->req;  in pgid_wipeout_start()
176 		      id->ssid, id->devno, cdev->private->pgid_valid_mask,  in pgid_wipeout_start()
177 		      cdev->private->path_noirq_mask);  in pgid_wipeout_start()
186 	if (cdev->private->flags.mpath)  in pgid_wipeout_start()
188 	spid_build_cp(cdev, fn);  in pgid_wipeout_start()
189 	ccw_request_start(cdev);  in pgid_wipeout_start()
195 static void spid_do(struct ccw_device *cdev)  in spid_do()  argument
197 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in spid_do()
198 	struct ccw_request *req = &cdev->private->req;  in spid_do()
202 	req->lpm = lpm_adjust(req->lpm, cdev->private->pgid_todo_mask);  in spid_do()
210 	if (cdev->private->flags.mpath)  in spid_do()
212 	spid_build_cp(cdev, fn);  in spid_do()
213 	ccw_request_start(cdev);  in spid_do()
217 	if (cdev->private->flags.pgid_unknown) {  in spid_do()
219 		pgid_wipeout_start(cdev);  in spid_do()
222 	verify_done(cdev, sch->vpm ? 0 : -EACCES);  in spid_do()
228 static void spid_callback(struct ccw_device *cdev, void *data, int rc)  in spid_callback()  argument
230 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in spid_callback()
231 	struct ccw_request *req = &cdev->private->req;  in spid_callback()
238 		cdev->private->flags.pgid_unknown = 1;  in spid_callback()
239 		cdev->private->path_noirq_mask |= req->lpm;  in spid_callback()
242 		cdev->private->path_notoper_mask |= req->lpm;  in spid_callback()
245 		if (cdev->private->flags.mpath) {  in spid_callback()
247 			cdev->private->flags.mpath = 0;  in spid_callback()
251 		cdev->private->flags.pgroup = 0;  in spid_callback()
257 	spid_do(cdev);  in spid_callback()
261 	verify_start(cdev);  in spid_callback()
264 	verify_done(cdev, rc);  in spid_callback()
267 static void spid_start(struct ccw_device *cdev)  in spid_start()  argument
269 	struct ccw_request *req = &cdev->private->req;  in spid_start()
278 	spid_do(cdev);  in spid_start()
301 static void pgid_analyze(struct ccw_device *cdev, struct pgid **p,  in pgid_analyze()  argument
304 	struct pgid *pgid = &cdev->private->dma_area->pgid[0];  in pgid_analyze()
313 		if ((cdev->private->pgid_valid_mask & lpm) == 0)  in pgid_analyze()
333 static u8 pgid_to_donepm(struct ccw_device *cdev)  in pgid_to_donepm()  argument
335 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in pgid_to_donepm()
344 		if ((cdev->private->pgid_valid_mask & lpm) == 0)  in pgid_to_donepm()
346 		pgid = &cdev->private->dma_area->pgid[i];  in pgid_to_donepm()
354 		if (cdev->private->flags.mpath) {  in pgid_to_donepm()
367 static void pgid_fill(struct ccw_device *cdev, struct pgid *pgid)  in pgid_fill()  argument
372 		memcpy(&cdev->private->dma_area->pgid[i], pgid,  in pgid_fill()
379 static void snid_done(struct ccw_device *cdev, int rc)  in snid_done()  argument
381 	struct ccw_dev_id *id = &cdev->private->dev_id;  in snid_done()
382 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in snid_done()
391 	pgid_analyze(cdev, &pgid, &mismatch, &reserved, &reset);  in snid_done()
392 	if (reserved == cdev->private->pgid_valid_mask)  in snid_done()
397 		donepm = pgid_to_donepm(cdev);  in snid_done()
399 		cdev->private->pgid_reset_mask |= reset;  in snid_done()
400 		cdev->private->pgid_todo_mask &=  in snid_done()
401 			~(donepm | cdev->private->path_noirq_mask);  in snid_done()
402 		pgid_fill(cdev, pgid);  in snid_done()
407 		      id->devno, rc, cdev->private->pgid_valid_mask, sch->vpm,  in snid_done()
408 		      cdev->private->pgid_todo_mask, mismatch, reserved, reset);  in snid_done()
411 		if (cdev->private->flags.pgid_unknown) {  in snid_done()
412 			pgid_wipeout_start(cdev);  in snid_done()
416 		if (cdev->private->pgid_todo_mask == 0) {  in snid_done()
417 			verify_done(cdev, sch->vpm == 0 ? -EACCES : 0);  in snid_done()
421 		spid_start(cdev);  in snid_done()
425 		cdev->private->flags.pgroup = 0;  in snid_done()
426 		cdev->private->flags.mpath = 0;  in snid_done()
427 		verify_start(cdev);  in snid_done()
430 		verify_done(cdev, rc);  in snid_done()
437 static void snid_build_cp(struct ccw_device *cdev)  in snid_build_cp()  argument
439 	struct ccw_request *req = &cdev->private->req;  in snid_build_cp()
440 	struct ccw1 *cp = cdev->private->dma_area->iccws;  in snid_build_cp()
445 	cp->cda		= virt_to_dma32(&cdev->private->dma_area->pgid[i]);  in snid_build_cp()
454 static void snid_do(struct ccw_device *cdev)  in snid_do()  argument
456 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in snid_do()
457 	struct ccw_request *req = &cdev->private->req;  in snid_do()
461 			      ~cdev->private->path_noirq_mask);  in snid_do()
464 	snid_build_cp(cdev);  in snid_do()
465 	ccw_request_start(cdev);  in snid_do()
469 	if (cdev->private->pgid_valid_mask)  in snid_do()
471 	else if (cdev->private->path_noirq_mask)  in snid_do()
475 	snid_done(cdev, ret);  in snid_do()
481 static void snid_callback(struct ccw_device *cdev, void *data, int rc)  in snid_callback()  argument
483 	struct ccw_request *req = &cdev->private->req;  in snid_callback()
487 		cdev->private->pgid_valid_mask |= req->lpm;  in snid_callback()
490 		cdev->private->flags.pgid_unknown = 1;  in snid_callback()
491 		cdev->private->path_noirq_mask |= req->lpm;  in snid_callback()
494 		cdev->private->path_notoper_mask |= req->lpm;  in snid_callback()
501 	snid_do(cdev);  in snid_callback()
505 	snid_done(cdev, rc);  in snid_callback()
511 static void verify_start(struct ccw_device *cdev)  in verify_start()  argument
513 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in verify_start()
514 	struct ccw_request *req = &cdev->private->req;  in verify_start()
515 	struct ccw_dev_id *devid = &cdev->private->dev_id;  in verify_start()
521 	memset(cdev->private->dma_area->pgid, 0,  in verify_start()
522 	       sizeof(cdev->private->dma_area->pgid));  in verify_start()
523 	cdev->private->pgid_valid_mask = 0;  in verify_start()
524 	cdev->private->pgid_todo_mask = sch->schib.pmcw.pam;  in verify_start()
525 	cdev->private->path_notoper_mask = 0;  in verify_start()
533 	if (cdev->private->flags.pgroup) {  in verify_start()
537 		snid_do(cdev);  in verify_start()
543 		nop_do(cdev);  in verify_start()
557 void ccw_device_verify_start(struct ccw_device *cdev)  in ccw_device_verify_start()  argument
560 	CIO_HEX_EVENT(4, &cdev->private->dev_id, sizeof(cdev->private->dev_id));  in ccw_device_verify_start()
565 	cdev->private->flags.pgroup = cdev->private->options.pgroup;  in ccw_device_verify_start()
566 	cdev->private->flags.mpath = cdev->private->options.mpath;  in ccw_device_verify_start()
567 	cdev->private->flags.doverify = 0;  in ccw_device_verify_start()
568 	cdev->private->path_noirq_mask = 0;  in ccw_device_verify_start()
569 	verify_start(cdev);  in ccw_device_verify_start()
575 static void disband_callback(struct ccw_device *cdev, void *data, int rc)  in disband_callback()  argument
577 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in disband_callback()
578 	struct ccw_dev_id *id = &cdev->private->dev_id;  in disband_callback()
583 	cdev->private->flags.mpath = 0;  in disband_callback()
591 	ccw_device_disband_done(cdev, rc);  in disband_callback()
602 void ccw_device_disband_start(struct ccw_device *cdev)  in ccw_device_disband_start()  argument
604 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in ccw_device_disband_start()
605 	struct ccw_request *req = &cdev->private->req;  in ccw_device_disband_start()
609 	CIO_HEX_EVENT(4, &cdev->private->dev_id, sizeof(cdev->private->dev_id));  in ccw_device_disband_start()
618 	if (cdev->private->flags.mpath)  in ccw_device_disband_start()
620 	spid_build_cp(cdev, fn);  in ccw_device_disband_start()
621 	ccw_request_start(cdev);  in ccw_device_disband_start()
629 static void stlck_build_cp(struct ccw_device *cdev, void *buf1, void *buf2)  in stlck_build_cp()  argument
631 	struct ccw_request *req = &cdev->private->req;  in stlck_build_cp()
632 	struct ccw1 *cp = cdev->private->dma_area->iccws;  in stlck_build_cp()
645 static void stlck_callback(struct ccw_device *cdev, void *data, int rc)  in stlck_callback()  argument
662 static void ccw_device_stlck_start(struct ccw_device *cdev, void *data,  in ccw_device_stlck_start()  argument
665 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in ccw_device_stlck_start()
666 	struct ccw_request *req = &cdev->private->req;  in ccw_device_stlck_start()
669 	CIO_HEX_EVENT(4, &cdev->private->dev_id, sizeof(cdev->private->dev_id));  in ccw_device_stlck_start()
677 	stlck_build_cp(cdev, buf1, buf2);  in ccw_device_stlck_start()
678 	ccw_request_start(cdev);  in ccw_device_stlck_start()
684 int ccw_device_stlck(struct ccw_device *cdev)  in ccw_device_stlck()  argument
686 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in ccw_device_stlck()
692 	if (cdev->drv) {  in ccw_device_stlck()
693 		if (!cdev->private->options.force)  in ccw_device_stlck()
706 	cdev->private->state = DEV_STATE_STEAL_LOCK;  in ccw_device_stlck()
707 	ccw_device_stlck_start(cdev, &data, &buffer[0], &buffer[32]);  in ccw_device_stlck()
713 		ccw_request_cancel(cdev);  in ccw_device_stlck()
721 	cdev->private->state = DEV_STATE_BOXED;  in ccw_device_stlck()