27 static void verify_start(struct ccw_device *cdev);
32 static void verify_done(struct ccw_device *cdev, int rc)  in verify_done()  argument
34 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in verify_done()
35 	struct ccw_dev_id *id = &cdev->private->dev_id;  in verify_done()
36 	int mpath = cdev->private->flags.mpath;  in verify_done()
37 	int pgroup = cdev->private->flags.pgroup;  in verify_done()
50 	ccw_device_verify_done(cdev, rc);  in verify_done()
56 static void nop_build_cp(struct ccw_device *cdev)  in nop_build_cp()  argument
58 	struct ccw_request *req = &cdev->private->req;  in nop_build_cp()
59 	struct ccw1 *cp = cdev->private->iccws;  in nop_build_cp()
71 static void nop_do(struct ccw_device *cdev)  in nop_do()  argument
73 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in nop_do()
74 	struct ccw_request *req = &cdev->private->req;  in nop_do()
77 			      ~cdev->private->path_noirq_mask);  in nop_do()
80 	nop_build_cp(cdev);  in nop_do()
81 	ccw_request_start(cdev);  in nop_do()
85 	verify_done(cdev, sch->vpm ? 0 : -EACCES);  in nop_do()
91 static enum io_status nop_filter(struct ccw_device *cdev, void *data,  in nop_filter()  argument
103 static void nop_callback(struct ccw_device *cdev, void *data, int rc)  in nop_callback()  argument
105 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in nop_callback()
106 	struct ccw_request *req = &cdev->private->req;  in nop_callback()
113 		cdev->private->path_noirq_mask |= req->lpm;  in nop_callback()
116 		cdev->private->path_notoper_mask |= req->lpm;  in nop_callback()
123 	nop_do(cdev);  in nop_callback()
127 	verify_done(cdev, rc);  in nop_callback()
133 static void spid_build_cp(struct ccw_device *cdev, u8 fn)  in spid_build_cp()  argument
135 	struct ccw_request *req = &cdev->private->req;  in spid_build_cp()
136 	struct ccw1 *cp = cdev->private->iccws;  in spid_build_cp()
138 	struct pgid *pgid = &cdev->private->pgid[i];  in spid_build_cp()
148 static void pgid_wipeout_callback(struct ccw_device *cdev, void *data, int rc)  in pgid_wipeout_callback()  argument
152 		verify_done(cdev, rc);  in pgid_wipeout_callback()
159 	cdev->private->flags.pgid_unknown = 0;  in pgid_wipeout_callback()
160 	verify_start(cdev);  in pgid_wipeout_callback()
166 static void pgid_wipeout_start(struct ccw_device *cdev)  in pgid_wipeout_start()  argument
168 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in pgid_wipeout_start()
169 	struct ccw_dev_id *id = &cdev->private->dev_id;  in pgid_wipeout_start()
170 	struct ccw_request *req = &cdev->private->req;  in pgid_wipeout_start()
174 		      id->ssid, id->devno, cdev->private->pgid_valid_mask,  in pgid_wipeout_start()
175 		      cdev->private->path_noirq_mask);  in pgid_wipeout_start()
184 	if (cdev->private->flags.mpath)  in pgid_wipeout_start()
186 	spid_build_cp(cdev, fn);  in pgid_wipeout_start()
187 	ccw_request_start(cdev);  in pgid_wipeout_start()
193 static void spid_do(struct ccw_device *cdev)  in spid_do()  argument
195 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in spid_do()
196 	struct ccw_request *req = &cdev->private->req;  in spid_do()
200 	req->lpm = lpm_adjust(req->lpm, cdev->private->pgid_todo_mask);  in spid_do()
208 	if (cdev->private->flags.mpath)  in spid_do()
210 	spid_build_cp(cdev, fn);  in spid_do()
211 	ccw_request_start(cdev);  in spid_do()
215 	if (cdev->private->flags.pgid_unknown) {  in spid_do()
217 		pgid_wipeout_start(cdev);  in spid_do()
220 	verify_done(cdev, sch->vpm ? 0 : -EACCES);  in spid_do()
226 static void spid_callback(struct ccw_device *cdev, void *data, int rc)  in spid_callback()  argument
228 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in spid_callback()
229 	struct ccw_request *req = &cdev->private->req;  in spid_callback()
236 		cdev->private->flags.pgid_unknown = 1;  in spid_callback()
237 		cdev->private->path_noirq_mask |= req->lpm;  in spid_callback()
240 		cdev->private->path_notoper_mask |= req->lpm;  in spid_callback()
243 		if (cdev->private->flags.mpath) {  in spid_callback()
245 			cdev->private->flags.mpath = 0;  in spid_callback()
249 		cdev->private->flags.pgroup = 0;  in spid_callback()
255 	spid_do(cdev);  in spid_callback()
259 	verify_start(cdev);  in spid_callback()
262 	verify_done(cdev, rc);  in spid_callback()
265 static void spid_start(struct ccw_device *cdev)  in spid_start()  argument
267 	struct ccw_request *req = &cdev->private->req;  in spid_start()
276 	spid_do(cdev);  in spid_start()
299 static void pgid_analyze(struct ccw_device *cdev, struct pgid **p,  in pgid_analyze()  argument
302 	struct pgid *pgid = &cdev->private->pgid[0];  in pgid_analyze()
311 		if ((cdev->private->pgid_valid_mask & lpm) == 0)  in pgid_analyze()
331 static u8 pgid_to_donepm(struct ccw_device *cdev)  in pgid_to_donepm()  argument
333 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in pgid_to_donepm()
342 		if ((cdev->private->pgid_valid_mask & lpm) == 0)  in pgid_to_donepm()
344 		pgid = &cdev->private->pgid[i];  in pgid_to_donepm()
352 		if (cdev->private->flags.mpath) {  in pgid_to_donepm()
365 static void pgid_fill(struct ccw_device *cdev, struct pgid *pgid)  in pgid_fill()  argument
370 		memcpy(&cdev->private->pgid[i], pgid, sizeof(struct pgid));  in pgid_fill()
376 static void snid_done(struct ccw_device *cdev, int rc)  in snid_done()  argument
378 	struct ccw_dev_id *id = &cdev->private->dev_id;  in snid_done()
379 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in snid_done()
388 	pgid_analyze(cdev, &pgid, &mismatch, &reserved, &reset);  in snid_done()
389 	if (reserved == cdev->private->pgid_valid_mask)  in snid_done()
394 		donepm = pgid_to_donepm(cdev);  in snid_done()
396 		cdev->private->pgid_reset_mask |= reset;  in snid_done()
397 		cdev->private->pgid_todo_mask &=  in snid_done()
398 			~(donepm | cdev->private->path_noirq_mask);  in snid_done()
399 		pgid_fill(cdev, pgid);  in snid_done()
404 		      id->devno, rc, cdev->private->pgid_valid_mask, sch->vpm,  in snid_done()
405 		      cdev->private->pgid_todo_mask, mismatch, reserved, reset);  in snid_done()
408 		if (cdev->private->flags.pgid_unknown) {  in snid_done()
409 			pgid_wipeout_start(cdev);  in snid_done()
413 		if (cdev->private->pgid_todo_mask == 0) {  in snid_done()
414 			verify_done(cdev, sch->vpm == 0 ? -EACCES : 0);  in snid_done()
418 		spid_start(cdev);  in snid_done()
422 		cdev->private->flags.pgroup = 0;  in snid_done()
423 		cdev->private->flags.mpath = 0;  in snid_done()
424 		verify_start(cdev);  in snid_done()
427 		verify_done(cdev, rc);  in snid_done()
434 static void snid_build_cp(struct ccw_device *cdev)  in snid_build_cp()  argument
436 	struct ccw_request *req = &cdev->private->req;  in snid_build_cp()
437 	struct ccw1 *cp = cdev->private->iccws;  in snid_build_cp()
442 	cp->cda		= (u32) (addr_t) &cdev->private->pgid[i];  in snid_build_cp()
451 static void snid_do(struct ccw_device *cdev)  in snid_do()  argument
453 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in snid_do()
454 	struct ccw_request *req = &cdev->private->req;  in snid_do()
458 			      ~cdev->private->path_noirq_mask);  in snid_do()
461 	snid_build_cp(cdev);  in snid_do()
462 	ccw_request_start(cdev);  in snid_do()
466 	if (cdev->private->pgid_valid_mask)  in snid_do()
468 	else if (cdev->private->path_noirq_mask)  in snid_do()
472 	snid_done(cdev, ret);  in snid_do()
478 static void snid_callback(struct ccw_device *cdev, void *data, int rc)  in snid_callback()  argument
480 	struct ccw_request *req = &cdev->private->req;  in snid_callback()
484 		cdev->private->pgid_valid_mask |= req->lpm;  in snid_callback()
487 		cdev->private->flags.pgid_unknown = 1;  in snid_callback()
488 		cdev->private->path_noirq_mask |= req->lpm;  in snid_callback()
491 		cdev->private->path_notoper_mask |= req->lpm;  in snid_callback()
498 	snid_do(cdev);  in snid_callback()
502 	snid_done(cdev, rc);  in snid_callback()
508 static void verify_start(struct ccw_device *cdev)  in verify_start()  argument
510 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in verify_start()
511 	struct ccw_request *req = &cdev->private->req;  in verify_start()
512 	struct ccw_dev_id *devid = &cdev->private->dev_id;  in verify_start()
518 	memset(cdev->private->pgid, 0, sizeof(cdev->private->pgid));  in verify_start()
519 	cdev->private->pgid_valid_mask = 0;  in verify_start()
520 	cdev->private->pgid_todo_mask = sch->schib.pmcw.pam;  in verify_start()
521 	cdev->private->path_notoper_mask = 0;  in verify_start()
529 	if (cdev->private->flags.pgroup) {  in verify_start()
533 		snid_do(cdev);  in verify_start()
539 		nop_do(cdev);  in verify_start()
553 void ccw_device_verify_start(struct ccw_device *cdev)  in ccw_device_verify_start()  argument
556 	CIO_HEX_EVENT(4, &cdev->private->dev_id, sizeof(cdev->private->dev_id));  in ccw_device_verify_start()
561 	cdev->private->flags.pgroup = cdev->private->options.pgroup;  in ccw_device_verify_start()
562 	cdev->private->flags.mpath = cdev->private->options.mpath;  in ccw_device_verify_start()
563 	cdev->private->flags.doverify = 0;  in ccw_device_verify_start()
564 	cdev->private->path_noirq_mask = 0;  in ccw_device_verify_start()
565 	verify_start(cdev);  in ccw_device_verify_start()
571 static void disband_callback(struct ccw_device *cdev, void *data, int rc)  in disband_callback()  argument
573 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in disband_callback()
574 	struct ccw_dev_id *id = &cdev->private->dev_id;  in disband_callback()
579 	cdev->private->flags.mpath = 0;  in disband_callback()
587 	ccw_device_disband_done(cdev, rc);  in disband_callback()
598 void ccw_device_disband_start(struct ccw_device *cdev)  in ccw_device_disband_start()  argument
600 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in ccw_device_disband_start()
601 	struct ccw_request *req = &cdev->private->req;  in ccw_device_disband_start()
605 	CIO_HEX_EVENT(4, &cdev->private->dev_id, sizeof(cdev->private->dev_id));  in ccw_device_disband_start()
614 	if (cdev->private->flags.mpath)  in ccw_device_disband_start()
616 	spid_build_cp(cdev, fn);  in ccw_device_disband_start()
617 	ccw_request_start(cdev);  in ccw_device_disband_start()
625 static void stlck_build_cp(struct ccw_device *cdev, void *buf1, void *buf2)  in stlck_build_cp()  argument
627 	struct ccw_request *req = &cdev->private->req;  in stlck_build_cp()
628 	struct ccw1 *cp = cdev->private->iccws;  in stlck_build_cp()
641 static void stlck_callback(struct ccw_device *cdev, void *data, int rc)  in stlck_callback()  argument
658 static void ccw_device_stlck_start(struct ccw_device *cdev, void *data,  in ccw_device_stlck_start()  argument
661 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in ccw_device_stlck_start()
662 	struct ccw_request *req = &cdev->private->req;  in ccw_device_stlck_start()
665 	CIO_HEX_EVENT(4, &cdev->private->dev_id, sizeof(cdev->private->dev_id));  in ccw_device_stlck_start()
673 	stlck_build_cp(cdev, buf1, buf2);  in ccw_device_stlck_start()
674 	ccw_request_start(cdev);  in ccw_device_stlck_start()
680 int ccw_device_stlck(struct ccw_device *cdev)  in ccw_device_stlck()  argument
682 	struct subchannel *sch = to_subchannel(cdev->dev.parent);  in ccw_device_stlck()
688 	if (cdev->drv) {  in ccw_device_stlck()
689 		if (!cdev->private->options.force)  in ccw_device_stlck()
702 	cdev->private->state = DEV_STATE_STEAL_LOCK;  in ccw_device_stlck()
703 	ccw_device_stlck_start(cdev, &data, &buffer[0], &buffer[32]);  in ccw_device_stlck()
709 		ccw_request_cancel(cdev);  in ccw_device_stlck()
717 	cdev->private->state = DEV_STATE_BOXED;  in ccw_device_stlck()