arm/arm/busdma_machdep-v6.c

78 	bus_addr_t		boundary;
303  * Return true if the given address does not fall on the alignment boundary.
314  * on a cacheline boundary (which would require a partial cacheline flush).
356  * boundaries, or doesn't begin on an alignment boundary, or falls within the
438     bus_addr_t boundary, bus_addr_t lowaddr, bus_addr_t highaddr,
447 	KASSERT(boundary == 0 || powerof2(boundary),
448 	    ("dma tag boundary %lu, must be a power of 2", boundary));
449 	KASSERT(boundary == 0 || boundary >= maxsegsz,
450 	    ("dma tag boundary %lu is < maxsegsz %lu\n", boundary, maxsegsz));
468 	newtag->boundary = boundary;
494 		if (newtag->boundary == 0)
495 			newtag->boundary = parent->boundary;
496 		else if (parent->boundary != 0)
497 			newtag->boundary = MIN(parent->boundary,
498 					       newtag->boundary);
519 	 * to any alignment or boundary specifications in the tag, so if the
526 		 * there can always be one more boundary crossing than the
618 	 * alignment and boundary constraints, it could still auto-bounce due to
785 	 *  - The alignment constraint isn't larger than a page boundary.
786 	 *  - There are no boundary-crossing constraints.
796 	    (dmat->boundary % PAGE_SIZE) == 0) {
801 		    mflags, 0, dmat->lowaddr, dmat->alignment, dmat->boundary,
862 		CTR5(KTR_BUSDMA, "lowaddr= %d, boundary= %d, alignment= %d"
864 		    dmat->lowaddr, dmat->boundary, dmat->alignment,
894 		CTR5(KTR_BUSDMA, "lowaddr= %d, boundary= %d, alignment= %d"
896 		    dmat->lowaddr, dmat->boundary, dmat->alignment,
960 	bmask = ~(dmat->boundary - 1);
961 	if (dmat->boundary > 0) {
962 		baddr = (curaddr + dmat->boundary) & bmask;
979 		    (dmat->boundary == 0 ||
1656 		 * data and/or assume it starts on a page boundary.