90 _isa_dmaunmask(struct isa_dma_state *ids, int chan)  in _isa_dmaunmask()  argument
94 	ISA_DMA_MASK_CLR(ids, chan);  in _isa_dmaunmask()
100 	if (ids->ids_frozen)  in _isa_dmaunmask()
105 		bus_space_write_1(ids->ids_bst, ids->ids_dma1h,  in _isa_dmaunmask()
108 		bus_space_write_1(ids->ids_bst, ids->ids_dma2h,  in _isa_dmaunmask()
113 _isa_dmamask(struct isa_dma_state *ids, int chan)  in _isa_dmamask()  argument
117 	ISA_DMA_MASK_SET(ids, chan);  in _isa_dmamask()
127 		bus_space_write_1(ids->ids_bst, ids->ids_dma1h,  in _isa_dmamask()
129 		bus_space_write_1(ids->ids_bst, ids->ids_dma1h,  in _isa_dmamask()
132 		bus_space_write_1(ids->ids_bst, ids->ids_dma2h,  in _isa_dmamask()
134 		bus_space_write_1(ids->ids_bst, ids->ids_dma2h,  in _isa_dmamask()
143 _isa_dmainit(struct isa_dma_state *ids, bus_space_tag_t bst, bus_dma_tag_t dmat, device_t dev)  in _isa_dmainit()  argument
147 	ids->ids_dev = dev;  in _isa_dmainit()
149 	if (ids->ids_initialized) {  in _isa_dmainit()
160 		if (!bus_space_is_equal(ids->ids_bst, bst) ||  in _isa_dmainit()
161 		    ids->ids_dmat != dmat)  in _isa_dmainit()
164 		ids->ids_bst = bst;  in _isa_dmainit()
165 		ids->ids_dmat = dmat;  in _isa_dmainit()
170 		if (bus_space_map(ids->ids_bst, IO_DMA1, DMA1_IOSIZE, 0,  in _isa_dmainit()
171 		    &ids->ids_dma1h))  in _isa_dmainit()
173 		if (bus_space_map(ids->ids_bst, IO_DMA2, DMA2_IOSIZE, 0,  in _isa_dmainit()
174 		    &ids->ids_dma2h))  in _isa_dmainit()
176 		if (bus_space_map(ids->ids_bst, IO_DMAPG, DMAPG_IOSIZE, 0,  in _isa_dmainit()
177 		    &ids->ids_dmapgh))  in _isa_dmainit()
183 		ids->ids_masked = 0xff;  in _isa_dmainit()
191 			if (ids->ids_maxsize[chan] == 0)  in _isa_dmainit()
192 				ids->ids_maxsize[chan] =  in _isa_dmainit()
196 		ids->ids_initialized = 1;  in _isa_dmainit()
203 		_isa_dmacascade(ids, 4);  in _isa_dmainit()
208 _isa_dmadestroy(struct isa_dma_state *ids)  in _isa_dmadestroy()  argument
210 	if (!ids->ids_initialized)  in _isa_dmadestroy()
213 	_isa_dmacascade_stop(ids, 4);  in _isa_dmadestroy()
218 	bus_space_unmap(ids->ids_bst, ids->ids_dmapgh, DMAPG_IOSIZE);  in _isa_dmadestroy()
219 	bus_space_unmap(ids->ids_bst, ids->ids_dma2h, DMA2_IOSIZE);  in _isa_dmadestroy()
220 	bus_space_unmap(ids->ids_bst, ids->ids_dma1h, DMA1_IOSIZE);  in _isa_dmadestroy()
222 	ids->ids_initialized = 0;  in _isa_dmadestroy()
230 _isa_dmacascade(struct isa_dma_state *ids, int chan)  in _isa_dmacascade()  argument
235 		printf("%s: bogus drq %d\n", device_xname(ids->ids_dev), chan);  in _isa_dmacascade()
239 	if (!ISA_DMA_DRQ_ISFREE(ids, chan)) {  in _isa_dmacascade()
240 		printf("%s: DRQ %d is not free\n", device_xname(ids->ids_dev),  in _isa_dmacascade()
245 	ISA_DMA_DRQ_ALLOC(ids, chan);  in _isa_dmacascade()
249 		bus_space_write_1(ids->ids_bst, ids->ids_dma1h,  in _isa_dmacascade()
252 		bus_space_write_1(ids->ids_bst, ids->ids_dma2h,  in _isa_dmacascade()
255 	_isa_dmaunmask(ids, chan);  in _isa_dmacascade()
264 _isa_dmacascade_stop(struct isa_dma_state *ids, int chan)  in _isa_dmacascade_stop()  argument
267 		printf("%s: bogus drq %d\n", device_xname(ids->ids_dev), chan);  in _isa_dmacascade_stop()
271 	if (ISA_DMA_DRQ_ISFREE(ids, chan))  in _isa_dmacascade_stop()
274 	_isa_dmamask(ids, chan);  in _isa_dmacascade_stop()
276 	ISA_DMA_DRQ_FREE(ids, chan);  in _isa_dmacascade_stop()
282 _isa_drq_alloc(struct isa_dma_state *ids, int chan)  in _isa_drq_alloc()  argument
284 	if (!ISA_DMA_DRQ_ISFREE(ids, chan))  in _isa_drq_alloc()
286 	ISA_DMA_DRQ_ALLOC(ids, chan);  in _isa_drq_alloc()
291 _isa_drq_free(struct isa_dma_state *ids, int chan)  in _isa_drq_free()  argument
293 	if (ISA_DMA_DRQ_ISFREE(ids, chan))  in _isa_drq_free()
295 	ISA_DMA_DRQ_FREE(ids, chan);  in _isa_drq_free()
300 _isa_dmamaxsize(struct isa_dma_state *ids, int chan)  in _isa_dmamaxsize()  argument
304 		printf("%s: bogus drq %d\n", device_xname(ids->ids_dev), chan);  in _isa_dmamaxsize()
308 	return (ids->ids_maxsize[chan]);  in _isa_dmamaxsize()
312 _isa_dmamap_create(struct isa_dma_state *ids, int chan, bus_size_t size, int flags)  in _isa_dmamap_create()  argument
317 		printf("%s: bogus drq %d\n", device_xname(ids->ids_dev), chan);  in _isa_dmamap_create()
321 	if (size > ids->ids_maxsize[chan])  in _isa_dmamap_create()
324 	error = bus_dmamap_create(ids->ids_dmat, size, 1, size,  in _isa_dmamap_create()
325 	    ids->ids_maxsize[chan], flags, &ids->ids_dmamaps[chan]);  in _isa_dmamap_create()
331 _isa_dmamap_destroy(struct isa_dma_state *ids, int chan)  in _isa_dmamap_destroy()  argument
335 		printf("%s: bogus drq %d\n", device_xname(ids->ids_dev), chan);  in _isa_dmamap_destroy()
339 	bus_dmamap_destroy(ids->ids_dmat, ids->ids_dmamaps[chan]);  in _isa_dmamap_destroy()
351 _isa_dmastart(struct isa_dma_state *ids, int chan, void *addr, bus_size_t nbytes, struct proc *p, i…  in _isa_dmastart()  argument
360 		printf("%s: bogus drq %d\n", device_xname(ids->ids_dev), chan);  in _isa_dmastart()
370 	if (ISA_DMA_DRQ_ISFREE(ids, chan)) {  in _isa_dmastart()
372 		    device_xname(ids->ids_dev), chan);  in _isa_dmastart()
379 			    device_xname(ids->ids_dev), chan,  in _isa_dmastart()
386 			    device_xname(ids->ids_dev), chan,  in _isa_dmastart()
392 	dmam = ids->ids_dmamaps[chan];  in _isa_dmastart()
396 	error = bus_dmamap_load(ids->ids_dmat, dmam, addr, nbytes,  in _isa_dmastart()
407 		bus_dmamap_sync(ids->ids_dmat, dmam, 0, dmam->dm_mapsize,  in _isa_dmastart()
409 		ids->ids_dmareads |= (1 << chan);  in _isa_dmastart()
411 		bus_dmamap_sync(ids->ids_dmat, dmam, 0, dmam->dm_mapsize,  in _isa_dmastart()
413 		ids->ids_dmareads &= ~(1 << chan);  in _isa_dmastart()
424 	ids->ids_dmalength[chan] = nbytes;  in _isa_dmastart()
426 	_isa_dmamask(ids, chan);  in _isa_dmastart()
427 	ids->ids_dmafinished &= ~(1 << chan);  in _isa_dmastart()
431 		bus_space_write_1(ids->ids_bst, ids->ids_dma1h, DMA1_MODE,  in _isa_dmastart()
436 		bus_space_write_1(ids->ids_bst, ids->ids_dmapgh,  in _isa_dmastart()
438 		bus_space_write_1(ids->ids_bst, ids->ids_dma1h, waport,  in _isa_dmastart()
440 		bus_space_write_1(ids->ids_bst, ids->ids_dma1h, waport,  in _isa_dmastart()
444 		bus_space_write_1(ids->ids_bst, ids->ids_dma1h, waport + 1,  in _isa_dmastart()
446 		bus_space_write_1(ids->ids_bst, ids->ids_dma1h, waport + 1,  in _isa_dmastart()
450 		bus_space_write_1(ids->ids_bst, ids->ids_dma2h, DMA2_MODE,  in _isa_dmastart()
455 		bus_space_write_1(ids->ids_bst, ids->ids_dmapgh,  in _isa_dmastart()
458 		bus_space_write_1(ids->ids_bst, ids->ids_dma2h, waport,  in _isa_dmastart()
460 		bus_space_write_1(ids->ids_bst, ids->ids_dma2h, waport,  in _isa_dmastart()
465 		bus_space_write_1(ids->ids_bst, ids->ids_dma2h, waport + 2,  in _isa_dmastart()
467 		bus_space_write_1(ids->ids_bst, ids->ids_dma2h, waport + 2,  in _isa_dmastart()
471 	_isa_dmaunmask(ids, chan);  in _isa_dmastart()
479 _isa_dmaabort(struct isa_dma_state *ids, int chan)  in _isa_dmaabort()  argument
483 		printf("%s: bogus drq %d\n", device_xname(ids->ids_dev), chan);  in _isa_dmaabort()
487 	_isa_dmamask(ids, chan);  in _isa_dmaabort()
488 	bus_dmamap_unload(ids->ids_dmat, ids->ids_dmamaps[chan]);  in _isa_dmaabort()
489 	ids->ids_dmareads &= ~(1 << chan);  in _isa_dmaabort()
493 _isa_dmacount(struct isa_dma_state *ids, int chan)  in _isa_dmacount()  argument
500 		printf("%s: bogus drq %d\n", device_xname(ids->ids_dev), chan);  in _isa_dmacount()
504 	_isa_dmamask(ids, chan);  in _isa_dmacount()
516 		nbytes = bus_space_read_1(ids->ids_bst, ids->ids_dma1h,  in _isa_dmacount()
518 		nbytes += bus_space_read_1(ids->ids_bst, ids->ids_dma1h,  in _isa_dmacount()
523 		nbytes = bus_space_read_1(ids->ids_bst, ids->ids_dma2h,  in _isa_dmacount()
525 		nbytes += bus_space_read_1(ids->ids_bst, ids->ids_dma2h,  in _isa_dmacount()
531 	if (nbytes == ids->ids_dmalength[chan])  in _isa_dmacount()
534 	_isa_dmaunmask(ids, chan);  in _isa_dmacount()
539 _isa_dmafinished(struct isa_dma_state *ids, int chan)  in _isa_dmafinished()  argument
543 		printf("%s: bogus drq %d\n", device_xname(ids->ids_dev), chan);  in _isa_dmafinished()
549 		ids->ids_dmafinished |= bus_space_read_1(ids->ids_bst,  in _isa_dmafinished()
550 		    ids->ids_dma1h, DMA1_SR) & 0x0f;  in _isa_dmafinished()
552 		ids->ids_dmafinished |= (bus_space_read_1(ids->ids_bst,  in _isa_dmafinished()
553 		    ids->ids_dma2h, DMA2_SR) & 0x0f) << 4;  in _isa_dmafinished()
555 	return ((ids->ids_dmafinished & (1 << chan)) != 0);  in _isa_dmafinished()
559 _isa_dmadone(struct isa_dma_state *ids, int chan)  in _isa_dmadone()  argument
564 		printf("%s: bogus drq %d\n", device_xname(ids->ids_dev), chan);  in _isa_dmadone()
568 	dmam = ids->ids_dmamaps[chan];  in _isa_dmadone()
570 	_isa_dmamask(ids, chan);  in _isa_dmadone()
572 	if (_isa_dmafinished(ids, chan) == 0)  in _isa_dmadone()
574 		    device_xname(ids->ids_dev), chan);  in _isa_dmadone()
576 	bus_dmamap_sync(ids->ids_dmat, dmam, 0, dmam->dm_mapsize,  in _isa_dmadone()
577 	    (ids->ids_dmareads & (1 << chan)) ? BUS_DMASYNC_POSTREAD :  in _isa_dmadone()
580 	bus_dmamap_unload(ids->ids_dmat, dmam);  in _isa_dmadone()
581 	ids->ids_dmareads &= ~(1 << chan);  in _isa_dmadone()
585 _isa_dmafreeze(struct isa_dma_state *ids)  in _isa_dmafreeze()  argument
591 	if (ids->ids_frozen == 0) {  in _isa_dmafreeze()
592 		bus_space_write_1(ids->ids_bst, ids->ids_dma1h,  in _isa_dmafreeze()
594 		bus_space_write_1(ids->ids_bst, ids->ids_dma2h,  in _isa_dmafreeze()
598 	ids->ids_frozen++;  in _isa_dmafreeze()
599 	if (ids->ids_frozen < 1)  in _isa_dmafreeze()
606 _isa_dmathaw(struct isa_dma_state *ids)  in _isa_dmathaw()  argument
612 	ids->ids_frozen--;  in _isa_dmathaw()
613 	if (ids->ids_frozen < 0)  in _isa_dmathaw()
616 	if (ids->ids_frozen == 0) {  in _isa_dmathaw()
617 		bus_space_write_1(ids->ids_bst, ids->ids_dma1h,  in _isa_dmathaw()
618 		    DMA1_MASK, ids->ids_masked & 0x0f);  in _isa_dmathaw()
619 		bus_space_write_1(ids->ids_bst, ids->ids_dma2h,  in _isa_dmathaw()
620 		    DMA2_MASK, (ids->ids_masked >> 4) & 0x0f);  in _isa_dmathaw()
627 _isa_dmamem_alloc(struct isa_dma_state *ids, int chan, bus_size_t size, bus_addr_t *addrp, int flag…  in _isa_dmamem_alloc()  argument
633 		printf("%s: bogus drq %d\n", device_xname(ids->ids_dev), chan);  in _isa_dmamem_alloc()
641 	error = bus_dmamem_alloc(ids->ids_dmat, size, PAGE_SIZE, boundary,  in _isa_dmamem_alloc()
651 _isa_dmamem_free(struct isa_dma_state *ids, int chan, bus_addr_t addr, bus_size_t size)  in _isa_dmamem_free()  argument
656 		printf("%s: bogus drq %d\n", device_xname(ids->ids_dev), chan);  in _isa_dmamem_free()
663 	bus_dmamem_free(ids->ids_dmat, &seg, 1);  in _isa_dmamem_free()
667 _isa_dmamem_map(struct isa_dma_state *ids, int chan, bus_addr_t addr, bus_size_t size, void **kvap,…  in _isa_dmamem_map()  argument
672 		printf("%s: bogus drq %d\n", device_xname(ids->ids_dev), chan);  in _isa_dmamem_map()
679 	return (bus_dmamem_map(ids->ids_dmat, &seg, 1, size, kvap, flags));  in _isa_dmamem_map()
683 _isa_dmamem_unmap(struct isa_dma_state *ids, int chan, void *kva, size_t size)  in _isa_dmamem_unmap()  argument
687 		printf("%s: bogus drq %d\n", device_xname(ids->ids_dev), chan);  in _isa_dmamem_unmap()
691 	bus_dmamem_unmap(ids->ids_dmat, kva, size);  in _isa_dmamem_unmap()
695 _isa_dmamem_mmap(struct isa_dma_state *ids, int chan, bus_addr_t addr, bus_size_t size, off_t off, …  in _isa_dmamem_mmap()  argument
700 		printf("%s: bogus drq %d\n", device_xname(ids->ids_dev), chan);  in _isa_dmamem_mmap()
710 	return (bus_dmamem_mmap(ids->ids_dmat, &seg, 1, off, prot, flags));  in _isa_dmamem_mmap()
714 _isa_drq_isfree(struct isa_dma_state *ids, int chan)  in _isa_drq_isfree()  argument
718 		printf("%s: bogus drq %d\n", device_xname(ids->ids_dev), chan);  in _isa_drq_isfree()
722 	return ISA_DMA_DRQ_ISFREE(ids, chan);  in _isa_drq_isfree()
726 _isa_malloc(struct isa_dma_state *ids, int chan, size_t size, struct malloc_type *pool, int flags)  in _isa_malloc()  argument
735 	if (_isa_dmamem_alloc(ids, chan, size, &addr, bflags))  in _isa_malloc()
737 	if (_isa_dmamem_map(ids, chan, addr, size, &kva, bflags)) {  in _isa_malloc()
738 		_isa_dmamem_free(ids, chan, addr, size);  in _isa_malloc()
743 		_isa_dmamem_unmap(ids, chan, kva, size);  in _isa_malloc()
744 		_isa_dmamem_free(ids, chan, addr, size);  in _isa_malloc()
747 	m->ids = ids;  in _isa_malloc()
772 	_isa_dmamem_unmap(m->ids, m->chan, kva, m->size);  in _isa_free()
773 	_isa_dmamem_free(m->ids, m->chan, m->addr, m->size);  in _isa_free()
788 	return _isa_dmamem_mmap(m->ids, m->chan, m->addr,  in _isa_mappage()