Lines Matching defs:busmem

134 shmif_lockbus(struct shmif_mem *busmem)
138 	while (__predict_false(atomic_cas_32(&busmem->shm_lock,
152 shmif_unlockbus(struct shmif_mem *busmem)
157 	old = atomic_swap_32(&busmem->shm_lock, LOCK_UNLOCKED);
627 	struct shmif_mem *busmem = sc->sc_busmem;
657 	shmif_lockbus(busmem);
658 	KASSERT(busmem->shm_magic == SHMIF_MAGIC);
659 	busmem->shm_last = shmif_nextpktoff(busmem, busmem->shm_last);
663 	    shmif_buswrite(busmem, busmem->shm_last, &sp, sizeof(sp), &wrap);
667 		dataoff = shmif_buswrite(busmem, dataoff, mtod(m, void *),
672 		busmem->shm_gen++;
673 		DPRINTF(("bus generation now %" PRIu64 "\n", busmem->shm_gen));
675 	shmif_unlockbus(busmem);
682 	    busmem->shm_last));
712 	struct shmif_mem *busmem = sc->sc_busmem;
713 	unsigned gendiff = busmem->shm_gen - sc->sc_devgen;
716 	KASSERT(busmem->shm_first != busmem->shm_last);
718 	/* normalize onto a 2x busmem chunk */
720 	lastoff = shmif_nextpktoff(busmem, busmem->shm_last);
727 	/* Normalize onto 2x busmem chunk */
728 	if (busmem->shm_first >= lastoff) {
737 	return devoff >= busmem->shm_first && devoff <= lastoff;
745 	struct shmif_mem *busmem;
760 	busmem = sc->sc_busmem;
775 		shmif_lockbus(busmem);
776 		KASSERT(busmem->shm_magic == SHMIF_MAGIC);
777 		KASSERT(busmem->shm_gen >= sc->sc_devgen);
780 		if (sc->sc_devgen == busmem->shm_gen && 
781 		    shmif_nextpktoff(busmem, busmem->shm_last)
783 			shmif_unlockbus(busmem);
794 			KASSERT(busmem->shm_gen > 0);
795 			nextpkt = busmem->shm_first;
796 			if (busmem->shm_first > busmem->shm_last)
797 				sc->sc_devgen = busmem->shm_gen - 1;
799 				sc->sc_devgen = busmem->shm_gen;
808 		KASSERT(!(nextpkt > busmem->shm_last
809 		    && sc->sc_devgen == busmem->shm_gen));
812 		nextpkt = shmif_busread(busmem, &sp,
815 		nextpkt = shmif_busread(busmem, mtod(m, void *),