cam/scsi/scsi_sg.c

123 static void		sgdone(struct cam_periph *periph, union ccb *done_ccb);
124 static int		sgsendccb(struct cam_periph *periph, union ccb *ccb);
125 static int		sgsendrdwr(struct cam_periph *periph, union ccb *ccb);
173 	struct cam_periph *periph;
178 	periph = (struct cam_periph *)arg;
179 	mtx = cam_periph_mtx(periph);
182 	softc = (struct sg_softc *)periph->softc;
192 		cam_periph_release_locked(periph);
199 	cam_periph_release_locked(periph);
204 	 * cam_periph_release_locked() above could result in the periph
205 	 * getting freed.  If that is the case, dereferencing the periph
213 sgoninvalidate(struct cam_periph *periph)
217 	softc = (struct sg_softc *)periph->softc;
222 	xpt_register_async(0, sgasync, periph, periph->path);
230 	destroy_dev_sched_cb(softc->dev, sgdevgonecb, periph);
241 sgcleanup(struct cam_periph *periph)
245 	softc = (struct sg_softc *)periph->softc;
255 	struct cam_periph *periph;
257 	periph = (struct cam_periph *)callback_arg;
291 		cam_periph_async(periph, code, path, arg);
297 sgregister(struct cam_periph *periph, void *arg)
321 	periph->softc = softc;
324 	xpt_setup_ccb(&cpi.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
332 	cam_periph_unlock(periph);
335 			periph->unit_number, 0,
344 	 * Acquire a reference to the periph before we create the devfs
348 	if (cam_periph_acquire(periph) != CAM_REQ_CMP) {
349 		xpt_print(periph->path, "%s: lost periph during "
351 		cam_periph_lock(periph);
356 	softc->dev = make_dev(&sg_cdevsw, periph->unit_number,
358 			      periph->periph_name, periph->unit_number);
359 	if (periph->unit_number < 26) {
361 		    periph->unit_number + 'a');
364 		    ((periph->unit_number / 26) - 1) + 'a',
365 		    (periph->unit_number % 26) + 'a');
367 	cam_periph_lock(periph);
368 	softc->dev->si_drv1 = periph;
374 	xpt_register_async(AC_LOST_DEVICE, sgasync, periph, periph->path);
377 		xpt_announce_periph(periph, NULL);
383 sgdone(struct cam_periph *periph, union ccb *done_ccb)
388 	softc = (struct sg_softc *)periph->softc;
419 	struct cam_periph *periph;
423 	periph = (struct cam_periph *)dev->si_drv1;
424 	if (periph == NULL)
427 	if (cam_periph_acquire(periph) != CAM_REQ_CMP)
435 		cam_periph_release(periph);
439 	cam_periph_lock(periph);
441 	softc = (struct sg_softc *)periph->softc;
443 		cam_periph_release_locked(periph);
444 		cam_periph_unlock(periph);
450 	cam_periph_unlock(periph);
458 	struct cam_periph *periph;
462 	periph = (struct cam_periph *)dev->si_drv1;
463 	if (periph == NULL)
465 	mtx = cam_periph_mtx(periph);
468 	softc = periph->softc;
471 	cam_periph_release_locked(periph);
476 	 * cam_periph_release_locked() above could result in the periph
477 	 * getting freed.  If that is the case, dereferencing the periph
495 	struct cam_periph *periph;
500 	periph = (struct cam_periph *)dev->si_drv1;
501 	if (periph == NULL)
504 	cam_periph_lock(periph);
506 	softc = (struct sg_softc *)periph->softc;
545 		ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
582 		error = sgsendccb(periph, ccb);
618 		id->host_no = cam_sim_path(xpt_path_sim(periph->path));
619 		id->channel = xpt_path_path_id(periph->path);
620 		id->scsi_id = xpt_path_target_id(periph->path);
621 		id->lun = xpt_path_lun_id(periph->path);
663 	cam_periph_unlock(periph);
671 	struct cam_periph *periph;
680 	periph = dev->si_drv1;
750 	cam_periph_lock(periph);
751 	sc = periph->softc;
752 	xpt_setup_ccb(&ccb->ccb_h, periph->path, CAM_PRIORITY_NORMAL);
776 	error = sgsendrdwr(periph, ccb);
777 	cam_periph_unlock(periph);
793 	struct cam_periph *periph;
800 	periph = dev->si_drv1;
814 	cam_periph_lock(periph);
815 	sc = periph->softc;
822 		if (cam_periph_sleep(periph, rdwr, PCATCH, "sgread", 0) == ERESTART)
827 	cam_periph_unlock(periph);
871 	cam_periph_lock(periph);
873 	cam_periph_unlock(periph);
880 sgsendccb(struct cam_periph *periph, union ccb *ccb)
886 	softc = periph->softc;
896 	cam_periph_unlock(periph);
898 	cam_periph_lock(periph);
914 sgsendrdwr(struct cam_periph *periph, union ccb *ccb)
918 	softc = periph->softc;
927 	struct cam_periph *periph;
930 	periph = xpt_path_periph(ccb->ccb_h.path);
931 	softc = (struct sg_softc *)periph->softc;