704 static void dealloc_dmabuf(struct sv_state *s, struct dmabuf *db)  in dealloc_dmabuf()  argument
708 	if (db->rawbuf) {  in dealloc_dmabuf()
710 		pend = virt_to_page(db->rawbuf + (PAGE_SIZE << db->buforder) - 1);  in dealloc_dmabuf()
711 		for (page = virt_to_page(db->rawbuf); page <= pend; page++)  in dealloc_dmabuf()
713 		pci_free_consistent(s->dev, PAGE_SIZE << db->buforder, db->rawbuf, db->dmaaddr);  in dealloc_dmabuf()
715 	db->rawbuf = NULL;  in dealloc_dmabuf()
716 	db->mapped = db->ready = 0;  in dealloc_dmabuf()
724 	struct dmabuf *db = rec ? &s->dma_adc : &s->dma_dac;  in prog_dmabuf()  local
745 	db->hwptr = db->swptr = db->total_bytes = db->count = db->error = db->endcleared = 0;  in prog_dmabuf()
746 	if (!db->rawbuf) {  in prog_dmabuf()
747 		db->ready = db->mapped = 0;  in prog_dmabuf()
749 			if ((db->rawbuf = pci_alloc_consistent(s->dev, PAGE_SIZE << order, &db->dmaaddr)))  in prog_dmabuf()
751 		if (!db->rawbuf)  in prog_dmabuf()
753 		db->buforder = order;  in prog_dmabuf()
754 …if ((virt_to_bus(db->rawbuf) ^ (virt_to_bus(db->rawbuf) + (PAGE_SIZE << db->buforder) - 1)) & ~0xf…  in prog_dmabuf()
756 			       virt_to_bus(db->rawbuf), PAGE_SIZE << db->buforder);  in prog_dmabuf()
757 		if ((virt_to_bus(db->rawbuf) + (PAGE_SIZE << db->buforder) - 1) & ~0xffffff)  in prog_dmabuf()
759 			       virt_to_bus(db->rawbuf), PAGE_SIZE << db->buforder);  in prog_dmabuf()
761 		pend = virt_to_page(db->rawbuf + (PAGE_SIZE << db->buforder) - 1);  in prog_dmabuf()
762 		for (page = virt_to_page(db->rawbuf); page <= pend; page++)  in prog_dmabuf()
766 	bufs = PAGE_SIZE << db->buforder;  in prog_dmabuf()
767 	if (db->ossfragshift) {  in prog_dmabuf()
768 		if ((1000 << db->ossfragshift) < bytepersec)  in prog_dmabuf()
769 			db->fragshift = ld2(bytepersec/1000);  in prog_dmabuf()
771 			db->fragshift = db->ossfragshift;  in prog_dmabuf()
773 		db->fragshift = ld2(bytepersec/100/(db->subdivision ? db->subdivision : 1));  in prog_dmabuf()
774 		if (db->fragshift < 3)  in prog_dmabuf()
775 			db->fragshift = 3;  in prog_dmabuf()
777 	db->numfrag = bufs >> db->fragshift;  in prog_dmabuf()
778 	while (db->numfrag < 4 && db->fragshift > 3) {  in prog_dmabuf()
779 		db->fragshift--;  in prog_dmabuf()
780 		db->numfrag = bufs >> db->fragshift;  in prog_dmabuf()
782 	db->fragsize = 1 << db->fragshift;  in prog_dmabuf()
783 	if (db->ossmaxfrags >= 4 && db->ossmaxfrags < db->numfrag)  in prog_dmabuf()
784 		db->numfrag = db->ossmaxfrags;  in prog_dmabuf()
785 	db->fragsamples = db->fragsize >> sample_shift[fmt];  in prog_dmabuf()
786 	db->dmasize = db->numfrag << db->fragshift;  in prog_dmabuf()
787 	memset(db->rawbuf, (fmt & SV_CFMT_16BIT) ? 0 : 0x80, db->dmasize);  in prog_dmabuf()
790 		set_dmac(s, db->dmaaddr, db->numfrag << db->fragshift);  in prog_dmabuf()
792 		wrindir(s, SV_CIDMACBASECOUNT1, (db->fragsamples-1) >> 8);  in prog_dmabuf()
793 		wrindir(s, SV_CIDMACBASECOUNT0, db->fragsamples-1);  in prog_dmabuf()
795 		set_dmaa(s, db->dmaaddr, db->numfrag << db->fragshift);  in prog_dmabuf()
797 		wrindir(s, SV_CIDMAABASECOUNT1, (db->fragsamples-1) >> 8);  in prog_dmabuf()
798 		wrindir(s, SV_CIDMAABASECOUNT0, db->fragsamples-1);  in prog_dmabuf()
801 	db->enabled = 1;  in prog_dmabuf()
802 	db->ready = 1;  in prog_dmabuf()
1530 	struct dmabuf *db;  in sv_mmap()  local
1539 		db = &s->dma_dac;  in sv_mmap()
1543 		db = &s->dma_adc;  in sv_mmap()
1550 	if (size > (PAGE_SIZE << db->buforder))  in sv_mmap()
1553 	if (remap_page_range(vma->vm_start, virt_to_phys(db->rawbuf), size, vma->vm_page_prot))  in sv_mmap()
1555 	db->mapped = 1;  in sv_mmap()