270 	   assume it doesn't support sg mapping, and, since we tried to  in pci_map_single_1()
273 		printk_once(KERN_WARNING "pci_map_single: no HW sg\n");  in pci_map_single_1()
300 	DBGA2("pci_map_single: [%p,%zx] np %ld -> sg %llx from %ps\n",  in pci_map_single_1()
406 	DBGA2("pci_unmap_single: sg [%llx,%zx] np %ld from %ps\n",  in alpha_pci_unmap_page()
432 		   with vmalloc and sg if we can't find contiguous memory.  */  in alpha_pci_alloc_coherent()
481 #define SG_ENT_VIRT_ADDRESS(SG) (sg_virt((SG)))  argument
482 #define SG_ENT_PHYS_ADDRESS(SG) __pa(SG_ENT_VIRT_ADDRESS(SG))  argument
485 sg_classify(struct device *dev, struct scatterlist *sg, struct scatterlist *end,  in sg_classify()  argument
493 	leader = sg;  in sg_classify()
498 	/* we will not marge sg without device. */  in sg_classify()
500 	for (++sg; sg < end; ++sg) {  in sg_classify()
502 		addr = SG_ENT_PHYS_ADDRESS(sg);  in sg_classify()
503 		len = sg->length;  in sg_classify()
509 			sg->dma_address = -1;  in sg_classify()
512 			sg->dma_address = -2;  in sg_classify()
519 			leader = sg;  in sg_classify()
541 	struct scatterlist *sg;  in sg_fill()  local
592 	DBGA("    sg_fill: [%p,%lx] -> sg %llx np %ld\n",  in sg_fill()
598 	sg = leader;  in sg_fill()
601 		struct scatterlist *last_sg = sg;  in sg_fill()
604 		size = sg->length;  in sg_fill()
605 		paddr = SG_ENT_PHYS_ADDRESS(sg);  in sg_fill()
607 		while (sg+1 < end && (int) sg[1].dma_address == -1) {  in sg_fill()
608 			size += sg[1].length;  in sg_fill()
609 			sg = sg_next(sg);  in sg_fill()
622 		while (++last_sg <= sg) {  in sg_fill()
628 	} while (++sg < end && (int) sg->dma_address < 0);  in sg_fill()
633 static int alpha_pci_map_sg(struct device *dev, struct scatterlist *sg,  in alpha_pci_map_sg()  argument
650 		sg->dma_length = sg->length;  in alpha_pci_map_sg()
651 		sg->dma_address  in alpha_pci_map_sg()
652 		  = pci_map_single_1(pdev, SG_ENT_VIRT_ADDRESS(sg),  in alpha_pci_map_sg()
653 				     sg->length, dac_allowed);  in alpha_pci_map_sg()
654 		if (sg->dma_address == DMA_MAPPING_ERROR)  in alpha_pci_map_sg()
659 	start = sg;  in alpha_pci_map_sg()
660 	end = sg + nents;  in alpha_pci_map_sg()
663 	sg_classify(dev, sg, end, alpha_mv.mv_pci_tbi != 0);  in alpha_pci_map_sg()
680 	for (out = sg; sg < end; ++sg) {  in alpha_pci_map_sg()
681 		if ((int) sg->dma_address < 0)  in alpha_pci_map_sg()
683 		if (sg_fill(dev, sg, end, out, arena, max_dma, dac_allowed) < 0)  in alpha_pci_map_sg()
715 static void alpha_pci_unmap_sg(struct device *dev, struct scatterlist *sg,  in alpha_pci_unmap_sg()  argument
742 	for (end = sg + nents; sg < end; ++sg) {  in alpha_pci_unmap_sg()
748 		addr = sg->dma_address;  in alpha_pci_unmap_sg()
749 		size = sg->dma_length;  in alpha_pci_unmap_sg()
756 			      sg - end + nents, addr, size);  in alpha_pci_unmap_sg()
764 			      sg - end + nents, addr, size);  in alpha_pci_unmap_sg()
768 		DBGA("    (%ld) sg [%llx,%zx]\n",  in alpha_pci_unmap_sg()
769 		     sg - end + nents, addr, size);  in alpha_pci_unmap_sg()
788 	DBGA("pci_unmap_sg: %ld entries\n", nents - (end - sg));  in alpha_pci_unmap_sg()