Lines Matching +full:dma +full:- +full:ranges
1 // SPDX-License-Identifier: GPL-2.0
16 #include <linux/dma-direct.h> /* for bus_dma_region */
35 while (na--) in of_dump_addr()
85 return da - cp; in of_bus_default_map()
94 addr[na - 2] = cpu_to_be32(a >> 32); in of_bus_default_translate()
95 addr[na - 1] = cpu_to_be32(a & 0xffffffffu); in of_bus_default_translate()
146 * "vci" is for the /chaos bridge on 1st-gen PCI powermacs in of_bus_pci_match()
180 cp = of_read_number(range + 1, na - 1); in of_bus_pci_map()
182 da = of_read_number(addr + 1, na - 1); in of_bus_pci_map()
190 return da - cp; in of_bus_pci_map()
195 return of_bus_default_translate(addr + 1, offset, na - 1); in of_bus_pci_translate()
212 if (strcmp(bus->name, "pci")) { in of_get_pci_address()
216 bus->count_cells(dev, &na, &ns); in of_get_pci_address()
221 /* Get "reg" or "assigned-addresses" property */ in of_get_pci_address()
222 prop = of_get_property(dev, bus->addresses, &psize); in of_get_pci_address()
228 for (i = 0; psize >= onesize; psize -= onesize, prop += onesize, i++) { in of_get_pci_address()
234 *flags = bus->get_flags(prop); in of_get_pci_address()
251 return -EINVAL; in of_pci_address_to_resource()
257 * of_pci_range_to_resource - Create a resource from an of_pci_range
275 res->flags = range->flags; in of_pci_range_to_resource()
276 res->parent = res->child = res->sibling = NULL; in of_pci_range_to_resource()
277 res->name = np->full_name; in of_pci_range_to_resource()
279 if (res->flags & IORESOURCE_IO) { in of_pci_range_to_resource()
281 err = pci_register_io_range(&np->fwnode, range->cpu_addr, in of_pci_range_to_resource()
282 range->size); in of_pci_range_to_resource()
285 port = pci_address_to_pio(range->cpu_addr); in of_pci_range_to_resource()
286 if (port == (unsigned long)-1) { in of_pci_range_to_resource()
287 err = -EINVAL; in of_pci_range_to_resource()
290 res->start = port; in of_pci_range_to_resource()
293 upper_32_bits(range->cpu_addr)) { in of_pci_range_to_resource()
294 err = -EINVAL; in of_pci_range_to_resource()
298 res->start = range->cpu_addr; in of_pci_range_to_resource()
300 res->end = res->start + range->size - 1; in of_pci_range_to_resource()
304 res->start = (resource_size_t)OF_BAD_ADDR; in of_pci_range_to_resource()
305 res->end = (resource_size_t)OF_BAD_ADDR; in of_pci_range_to_resource()
339 cp = of_read_number(range + 1, na - 1); in of_bus_isa_map()
341 da = of_read_number(addr + 1, na - 1); in of_bus_isa_map()
349 return da - cp; in of_bus_isa_map()
354 return of_bus_default_translate(addr + 1, offset, na - 1); in of_bus_isa_translate()
378 .addresses = "assigned-addresses",
425 static int quirk_state = -1; in of_empty_ranges_quirk()
427 /* PA-SEMI sdc DT bug */ in of_empty_ranges_quirk()
428 if (of_device_is_compatible(np, "1682m-sdc")) in of_empty_ranges_quirk()
445 const __be32 *ranges; in of_translate_one() local
451 * Normally, an absence of a "ranges" property means we are in of_translate_one()
452 * crossing a non-translatable boundary, and thus the addresses in of_translate_one()
455 * what Apple understood, and they do have things like /uni-n or in of_translate_one()
456 * /ht nodes with no "ranges" property and a lot of perfectly in of_translate_one()
458 * "ranges" as equivalent to an empty "ranges" property which means in of_translate_one()
461 * the first place. --BenH. in of_translate_one()
464 * This code is only enabled on powerpc. --gcl in of_translate_one()
466 * This quirk also applies for 'dma-ranges' which frequently exist in in of_translate_one()
467 * child nodes without 'dma-ranges' in the parent nodes. --RobH in of_translate_one()
469 ranges = of_get_property(parent, rprop, &rlen); in of_translate_one()
470 if (ranges == NULL && !of_empty_ranges_quirk(parent) && in of_translate_one()
471 strcmp(rprop, "dma-ranges")) { in of_translate_one()
472 pr_debug("no ranges; cannot translate\n"); in of_translate_one()
475 if (ranges == NULL || rlen == 0) { in of_translate_one()
478 pr_debug("empty ranges; 1:1 translation\n"); in of_translate_one()
482 pr_debug("walking ranges...\n"); in of_translate_one()
484 /* Now walk through the ranges */ in of_translate_one()
487 for (; rlen >= rone; rlen -= rone, ranges += rone) { in of_translate_one()
488 offset = bus->map(addr, ranges, na, ns, pna); in of_translate_one()
496 memcpy(addr, ranges + na, 4 * pna); in of_translate_one()
503 return pbus->translate(addr, offset, pna); in of_translate_one()
507 * Translate an address from the device-tree into a CPU physical address,
511 * Note: We consider that crossing any level with #size-cells == 0 to mean
544 bus->count_cells(dev, &na, &ns); in __of_translate_address()
552 bus->name, na, ns, parent); in __of_translate_address()
572 * For indirectIO device which has no ranges property, get in __of_translate_address()
575 iorange = find_io_range_by_fwnode(&dev->fwnode); in __of_translate_address()
576 if (iorange && (iorange->flags != LOGIC_PIO_CPU_MMIO)) { in __of_translate_address()
577 result = of_read_number(addr + 1, na - 1); in __of_translate_address()
586 pbus->count_cells(dev, &pna, &pns); in __of_translate_address()
593 pbus->name, pna, pns, parent); in __of_translate_address()
619 in_addr, "ranges", &host); in of_translate_address()
634 index = of_property_match_string(np, "interconnect-names", "dma-mem"); in __of_get_dma_parent()
639 "#interconnect-cells", in __of_get_dma_parent()
663 in_addr, "dma-ranges", &host); in of_translate_dma_address()
688 bus->count_cells(dev, &na, &ns); in of_get_address()
693 /* Get "reg" or "assigned-addresses" property */ in of_get_address()
694 prop = of_get_property(dev, bus->addresses, &psize); in of_get_address()
700 for (i = 0; psize >= onesize; psize -= onesize, prop += onesize, i++) in of_get_address()
705 *flags = bus->get_flags(prop); in of_get_address()
717 parser->node = node; in parser_init()
718 parser->pna = of_n_addr_cells(node); in parser_init()
719 parser->na = of_bus_n_addr_cells(node); in parser_init()
720 parser->ns = of_bus_n_size_cells(node); in parser_init()
721 parser->dma = !strcmp(name, "dma-ranges"); in parser_init()
722 parser->bus = of_match_bus(node); in parser_init()
724 parser->range = of_get_property(node, name, &rlen); in parser_init()
725 if (parser->range == NULL) in parser_init()
726 return -ENOENT; in parser_init()
728 parser->end = parser->range + rlen / sizeof(__be32); in parser_init()
736 return parser_init(parser, node, "ranges"); in of_pci_range_parser_init()
743 return parser_init(parser, node, "dma-ranges"); in of_pci_dma_range_parser_init()
751 int na = parser->na; in of_pci_range_parser_one()
752 int ns = parser->ns; in of_pci_range_parser_one()
753 int np = parser->pna + na + ns; in of_pci_range_parser_one()
759 if (!parser->range || parser->range + np > parser->end) in of_pci_range_parser_one()
762 range->flags = parser->bus->get_flags(parser->range); in of_pci_range_parser_one()
765 if (parser->bus->has_flags) in of_pci_range_parser_one()
768 range->bus_addr = of_read_number(parser->range + busflag_na, na - busflag_na); in of_pci_range_parser_one()
770 if (parser->dma) in of_pci_range_parser_one()
771 range->cpu_addr = of_translate_dma_address(parser->node, in of_pci_range_parser_one()
772 parser->range + na); in of_pci_range_parser_one()
774 range->cpu_addr = of_translate_address(parser->node, in of_pci_range_parser_one()
775 parser->range + na); in of_pci_range_parser_one()
776 range->size = of_read_number(parser->range + parser->pna + na, ns); in of_pci_range_parser_one()
778 parser->range += np; in of_pci_range_parser_one()
781 while (parser->range + np <= parser->end) { in of_pci_range_parser_one()
785 flags = parser->bus->get_flags(parser->range); in of_pci_range_parser_one()
786 bus_addr = of_read_number(parser->range + busflag_na, na - busflag_na); in of_pci_range_parser_one()
787 if (parser->dma) in of_pci_range_parser_one()
788 cpu_addr = of_translate_dma_address(parser->node, in of_pci_range_parser_one()
789 parser->range + na); in of_pci_range_parser_one()
791 cpu_addr = of_translate_address(parser->node, in of_pci_range_parser_one()
792 parser->range + na); in of_pci_range_parser_one()
793 size = of_read_number(parser->range + parser->pna + na, ns); in of_pci_range_parser_one()
795 if (flags != range->flags) in of_pci_range_parser_one()
797 if (bus_addr != range->bus_addr + range->size || in of_pci_range_parser_one()
798 cpu_addr != range->cpu_addr + range->size) in of_pci_range_parser_one()
801 range->size += size; in of_pci_range_parser_one()
802 parser->range += np; in of_pci_range_parser_one()
817 in_addr, "ranges", &host); in of_translate_ioport()
819 /* host-specific port access */ in of_translate_ioport()
820 port = logic_pio_trans_hwaddr(&host->fwnode, taddr, size); in of_translate_ioport()
823 /* memory-mapped I/O range */ in of_translate_ioport()
827 if (port == (unsigned long)-1) in of_translate_ioport()
844 return -EINVAL; in __of_address_to_resource()
847 return -EINVAL; in __of_address_to_resource()
850 r->start = taddr; in __of_address_to_resource()
851 r->end = taddr + size - 1; in __of_address_to_resource()
852 r->flags = flags; in __of_address_to_resource()
853 r->name = name ? name : dev->full_name; in __of_address_to_resource()
859 * of_address_to_resource - Translate device tree address and return as resource
876 return -EINVAL; in of_address_to_resource()
878 /* Get optional "reg-names" property to add a name to a resource */ in of_address_to_resource()
879 of_property_read_string_index(dev, "reg-names", index, &name); in of_address_to_resource()
886 * of_iomap - Maps the memory mapped IO for a given device_node
904 * of_io_request_and_map - Requests a resource and maps the memory mapped IO
924 return IOMEM_ERR_PTR(-EINVAL); in of_io_request_and_map()
929 return IOMEM_ERR_PTR(-EBUSY); in of_io_request_and_map()
934 return IOMEM_ERR_PTR(-ENOMEM); in of_io_request_and_map()
943 * of_dma_get_range - Get DMA range info and put it into a map array
944 * @np: device node to get DMA range info
945 * @map: dma range structure to return
947 * Look in bottom up direction for the first "dma-ranges" property
948 * and parse it. Put the information into a DMA offset map array.
950 * dma-ranges format:
951 * DMA addr (dma_addr) : naddr cells
955 * It returns -ENODEV if "dma-ranges" property was not found for this
961 const __be32 *ranges = NULL; in of_dma_get_range() local
970 ranges = of_get_property(node, "dma-ranges", &len); in of_dma_get_range()
972 /* Ignore empty ranges, they imply no translation required */ in of_dma_get_range()
973 if (ranges && len > 0) in of_dma_get_range()
976 /* Once we find 'dma-ranges', then a missing one is an error */ in of_dma_get_range()
977 if (found_dma_ranges && !ranges) { in of_dma_get_range()
978 ret = -ENODEV; in of_dma_get_range()
986 if (!node || !ranges) { in of_dma_get_range()
987 pr_debug("no dma-ranges found for node(%pOF)\n", np); in of_dma_get_range()
988 ret = -ENODEV; in of_dma_get_range()
998 ret = -ENOMEM; in of_dma_get_range()
1003 * Record all info in the generic DMA ranges array for struct device. in of_dma_get_range()
1011 pr_err("translation of DMA address(%llx) to CPU address failed node(%pOF)\n", in of_dma_get_range()
1015 r->cpu_start = range.cpu_addr; in of_dma_get_range()
1016 r->dma_start = range.bus_addr; in of_dma_get_range()
1017 r->size = range.size; in of_dma_get_range()
1018 r->offset = range.cpu_addr - range.bus_addr; in of_dma_get_range()
1028 * of_dma_is_coherent - Check if device is coherent
1031 * It returns true if "dma-coherent" property was found
1032 * for this device in the DT, or if DMA is coherent by
1045 if (of_property_read_bool(node, "dma-coherent")) { in of_dma_is_coherent()