26 static void verify_start(struct ccw_device *cdev);
31 static void verify_done(struct ccw_device *cdev, int rc)  in verify_done()  argument
33 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in verify_done()
34 	struct ccw_dev_id *id = &cdev->private->dev_id;  in verify_done()
35 	int mpath = cdev->private->flags.mpath;  in verify_done()
36 	int pgroup = cdev->private->flags.pgroup;  in verify_done()
49 	ccw_device_verify_done(cdev, rc);  in verify_done()
55 static void nop_build_cp(struct ccw_device *cdev)  in nop_build_cp()  argument
57 	struct ccw_request *req = &cdev->private->req;  in nop_build_cp()
58 	struct ccw1 *cp = cdev->private->iccws;  in nop_build_cp()
70 static void nop_do(struct ccw_device *cdev)  in nop_do()  argument
72 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in nop_do()
73 	struct ccw_request *req = &cdev->private->req;  in nop_do()
76 			      ~cdev->private->path_noirq_mask);  in nop_do()
79 	nop_build_cp(cdev);  in nop_do()
80 	ccw_request_start(cdev);  in nop_do()
84 	verify_done(cdev, sch->vpm ? 0 : -EACCES);  in nop_do()
90 static enum io_status nop_filter(struct ccw_device *cdev, void *data,  in nop_filter()  argument
102 static void nop_callback(struct ccw_device *cdev, void *data, int rc)  in nop_callback()  argument
104 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in nop_callback()
105 	struct ccw_request *req = &cdev->private->req;  in nop_callback()
112 		cdev->private->path_noirq_mask |= req->lpm;  in nop_callback()
115 		cdev->private->path_notoper_mask |= req->lpm;  in nop_callback()
122 	nop_do(cdev);  in nop_callback()
126 	verify_done(cdev, rc);  in nop_callback()
132 static void spid_build_cp(struct ccw_device *cdev, u8 fn)  in spid_build_cp()  argument
134 	struct ccw_request *req = &cdev->private->req;  in spid_build_cp()
135 	struct ccw1 *cp = cdev->private->iccws;  in spid_build_cp()
137 	struct pgid *pgid = &cdev->private->pgid[i];  in spid_build_cp()
147 static void pgid_wipeout_callback(struct ccw_device *cdev, void *data, int rc)  in pgid_wipeout_callback()  argument
151 		verify_done(cdev, rc);  in pgid_wipeout_callback()
158 	cdev->private->flags.pgid_unknown = 0;  in pgid_wipeout_callback()
159 	verify_start(cdev);  in pgid_wipeout_callback()
165 static void pgid_wipeout_start(struct ccw_device *cdev)  in pgid_wipeout_start()  argument
167 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in pgid_wipeout_start()
168 	struct ccw_dev_id *id = &cdev->private->dev_id;  in pgid_wipeout_start()
169 	struct ccw_request *req = &cdev->private->req;  in pgid_wipeout_start()
173 		      id->ssid, id->devno, cdev->private->pgid_valid_mask,  in pgid_wipeout_start()
174 		      cdev->private->path_noirq_mask);  in pgid_wipeout_start()
183 	if (cdev->private->flags.mpath)  in pgid_wipeout_start()
185 	spid_build_cp(cdev, fn);  in pgid_wipeout_start()
186 	ccw_request_start(cdev);  in pgid_wipeout_start()
192 static void spid_do(struct ccw_device *cdev)  in spid_do()  argument
194 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in spid_do()
195 	struct ccw_request *req = &cdev->private->req;  in spid_do()
199 	req->lpm = lpm_adjust(req->lpm, cdev->private->pgid_todo_mask);  in spid_do()
207 	if (cdev->private->flags.mpath)  in spid_do()
209 	spid_build_cp(cdev, fn);  in spid_do()
210 	ccw_request_start(cdev);  in spid_do()
214 	if (cdev->private->flags.pgid_unknown) {  in spid_do()
216 		pgid_wipeout_start(cdev);  in spid_do()
219 	verify_done(cdev, sch->vpm ? 0 : -EACCES);  in spid_do()
225 static void spid_callback(struct ccw_device *cdev, void *data, int rc)  in spid_callback()  argument
227 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in spid_callback()
228 	struct ccw_request *req = &cdev->private->req;  in spid_callback()
235 		cdev->private->flags.pgid_unknown = 1;  in spid_callback()
236 		cdev->private->path_noirq_mask |= req->lpm;  in spid_callback()
239 		cdev->private->path_notoper_mask |= req->lpm;  in spid_callback()
242 		if (cdev->private->flags.mpath) {  in spid_callback()
244 			cdev->private->flags.mpath = 0;  in spid_callback()
248 		cdev->private->flags.pgroup = 0;  in spid_callback()
254 	spid_do(cdev);  in spid_callback()
258 	verify_start(cdev);  in spid_callback()
261 	verify_done(cdev, rc);  in spid_callback()
264 static void spid_start(struct ccw_device *cdev)  in spid_start()  argument
266 	struct ccw_request *req = &cdev->private->req;  in spid_start()
275 	spid_do(cdev);  in spid_start()
298 static void pgid_analyze(struct ccw_device *cdev, struct pgid **p,  in pgid_analyze()  argument
301 	struct pgid *pgid = &cdev->private->pgid[0];  in pgid_analyze()
310 		if ((cdev->private->pgid_valid_mask & lpm) == 0)  in pgid_analyze()
330 static u8 pgid_to_donepm(struct ccw_device *cdev)  in pgid_to_donepm()  argument
332 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in pgid_to_donepm()
341 		if ((cdev->private->pgid_valid_mask & lpm) == 0)  in pgid_to_donepm()
343 		pgid = &cdev->private->pgid[i];  in pgid_to_donepm()
351 		if (cdev->private->flags.mpath) {  in pgid_to_donepm()
364 static void pgid_fill(struct ccw_device *cdev, struct pgid *pgid)  in pgid_fill()  argument
369 		memcpy(&cdev->private->pgid[i], pgid, sizeof(struct pgid));  in pgid_fill()
375 static void snid_done(struct ccw_device *cdev, int rc)  in snid_done()  argument
377 	struct ccw_dev_id *id = &cdev->private->dev_id;  in snid_done()
378 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in snid_done()
387 	pgid_analyze(cdev, &pgid, &mismatch, &reserved, &reset);  in snid_done()
388 	if (reserved == cdev->private->pgid_valid_mask)  in snid_done()
393 		donepm = pgid_to_donepm(cdev);  in snid_done()
395 		cdev->private->pgid_reset_mask |= reset;  in snid_done()
396 		cdev->private->pgid_todo_mask &=  in snid_done()
397 			~(donepm | cdev->private->path_noirq_mask);  in snid_done()
398 		pgid_fill(cdev, pgid);  in snid_done()
403 		      id->devno, rc, cdev->private->pgid_valid_mask, sch->vpm,  in snid_done()
404 		      cdev->private->pgid_todo_mask, mismatch, reserved, reset);  in snid_done()
407 		if (cdev->private->flags.pgid_unknown) {  in snid_done()
408 			pgid_wipeout_start(cdev);  in snid_done()
412 		if (cdev->private->pgid_todo_mask == 0) {  in snid_done()
413 			verify_done(cdev, sch->vpm == 0 ? -EACCES : 0);  in snid_done()
417 		spid_start(cdev);  in snid_done()
421 		cdev->private->flags.pgroup = 0;  in snid_done()
422 		cdev->private->flags.mpath = 0;  in snid_done()
423 		verify_start(cdev);  in snid_done()
426 		verify_done(cdev, rc);  in snid_done()
433 static void snid_build_cp(struct ccw_device *cdev)  in snid_build_cp()  argument
435 	struct ccw_request *req = &cdev->private->req;  in snid_build_cp()
436 	struct ccw1 *cp = cdev->private->iccws;  in snid_build_cp()
441 	cp->cda		= (u32) (addr_t) &cdev->private->pgid[i];  in snid_build_cp()
450 static void snid_do(struct ccw_device *cdev)  in snid_do()  argument
452 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in snid_do()
453 	struct ccw_request *req = &cdev->private->req;  in snid_do()
457 			      ~cdev->private->path_noirq_mask);  in snid_do()
460 	snid_build_cp(cdev);  in snid_do()
461 	ccw_request_start(cdev);  in snid_do()
465 	if (cdev->private->pgid_valid_mask)  in snid_do()
467 	else if (cdev->private->path_noirq_mask)  in snid_do()
471 	snid_done(cdev, ret);  in snid_do()
477 static void snid_callback(struct ccw_device *cdev, void *data, int rc)  in snid_callback()  argument
479 	struct ccw_request *req = &cdev->private->req;  in snid_callback()
483 		cdev->private->pgid_valid_mask |= req->lpm;  in snid_callback()
486 		cdev->private->flags.pgid_unknown = 1;  in snid_callback()
487 		cdev->private->path_noirq_mask |= req->lpm;  in snid_callback()
490 		cdev->private->path_notoper_mask |= req->lpm;  in snid_callback()
497 	snid_do(cdev);  in snid_callback()
501 	snid_done(cdev, rc);  in snid_callback()
507 static void verify_start(struct ccw_device *cdev)  in verify_start()  argument
509 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in verify_start()
510 	struct ccw_request *req = &cdev->private->req;  in verify_start()
511 	struct ccw_dev_id *devid = &cdev->private->dev_id;  in verify_start()
517 	memset(cdev->private->pgid, 0, sizeof(cdev->private->pgid));  in verify_start()
518 	cdev->private->pgid_valid_mask = 0;  in verify_start()
519 	cdev->private->pgid_todo_mask = sch->schib.pmcw.pam;  in verify_start()
520 	cdev->private->path_notoper_mask = 0;  in verify_start()
528 	if (cdev->private->flags.pgroup) {  in verify_start()
532 		snid_do(cdev);  in verify_start()
538 		nop_do(cdev);  in verify_start()
552 void ccw_device_verify_start(struct ccw_device *cdev)  in ccw_device_verify_start()  argument
555 	CIO_HEX_EVENT(4, &cdev->private->dev_id, sizeof(cdev->private->dev_id));  in ccw_device_verify_start()
560 	cdev->private->flags.pgroup = cdev->private->options.pgroup;  in ccw_device_verify_start()
561 	cdev->private->flags.mpath = cdev->private->options.mpath;  in ccw_device_verify_start()
562 	cdev->private->flags.doverify = 0;  in ccw_device_verify_start()
563 	cdev->private->path_noirq_mask = 0;  in ccw_device_verify_start()
564 	verify_start(cdev);  in ccw_device_verify_start()
570 static void disband_callback(struct ccw_device *cdev, void *data, int rc)  in disband_callback()  argument
572 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in disband_callback()
573 	struct ccw_dev_id *id = &cdev->private->dev_id;  in disband_callback()
578 	cdev->private->flags.mpath = 0;  in disband_callback()
586 	ccw_device_disband_done(cdev, rc);  in disband_callback()
597 void ccw_device_disband_start(struct ccw_device *cdev)  in ccw_device_disband_start()  argument
599 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in ccw_device_disband_start()
600 	struct ccw_request *req = &cdev->private->req;  in ccw_device_disband_start()
604 	CIO_HEX_EVENT(4, &cdev->private->dev_id, sizeof(cdev->private->dev_id));  in ccw_device_disband_start()
613 	if (cdev->private->flags.mpath)  in ccw_device_disband_start()
615 	spid_build_cp(cdev, fn);  in ccw_device_disband_start()
616 	ccw_request_start(cdev);  in ccw_device_disband_start()
619 static void stlck_build_cp(struct ccw_device *cdev, void *buf1, void *buf2)  in stlck_build_cp()  argument
621 	struct ccw_request *req = &cdev->private->req;  in stlck_build_cp()
622 	struct ccw1 *cp = cdev->private->iccws;  in stlck_build_cp()
635 static void stlck_callback(struct ccw_device *cdev, void *data, int rc)  in stlck_callback()  argument
637 	ccw_device_stlck_done(cdev, data, rc);  in stlck_callback()
651 void ccw_device_stlck_start(struct ccw_device *cdev, void *data, void *buf1,  in ccw_device_stlck_start()  argument
654 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in ccw_device_stlck_start()
655 	struct ccw_request *req = &cdev->private->req;  in ccw_device_stlck_start()
658 	CIO_HEX_EVENT(4, &cdev->private->dev_id, sizeof(cdev->private->dev_id));  in ccw_device_stlck_start()
666 	stlck_build_cp(cdev, buf1, buf2);  in ccw_device_stlck_start()
667 	ccw_request_start(cdev);  in ccw_device_stlck_start()