Lines Matching +full:bus +full:- +full:range
1 // SPDX-License-Identifier: GPL-2.0
16 #include <linux/dma-direct.h> /* for bus_dma_region */
35 while (na--) in of_dump_addr()
43 /* Callbacks for bus specific translators */
50 u64 (*map)(__be32 *addr, const __be32 *range,
58 * Default translator (generic bus)
70 static u64 of_bus_default_map(__be32 *addr, const __be32 *range, in of_bus_default_map() argument
75 cp = of_read_number(range, na); in of_bus_default_map()
76 s = of_read_number(range + na + pna, ns); in of_bus_default_map()
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()
129 * PCI bus specific translator
146 * "vci" is for the /chaos bridge on 1st-gen PCI powermacs in of_bus_pci_match()
166 static u64 of_bus_pci_map(__be32 *addr, const __be32 *range, int na, int ns, in of_bus_pci_map() argument
173 rf = of_bus_pci_get_flags(range); in of_bus_pci_map()
180 cp = of_read_number(range + 1, na - 1); in of_bus_pci_map()
181 s = of_read_number(range + na + pna, ns); 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()
204 struct of_bus *bus; in of_get_pci_address() local
207 /* Get parent & match bus type */ in of_get_pci_address()
211 bus = of_match_bus(parent); in of_get_pci_address()
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
258 * @range: the PCI range that describes the resource
259 * @np: device node where the range belongs to
261 * reflect the values contained in the range.
263 * Returns EINVAL if the range cannot be converted to resource.
265 * Note that if the range is an IO range, the resource will be converted
267 * if the range cannot be matched to any host bridge IO space (our case here).
268 * To guard against that we try to register the IO range first.
271 int of_pci_range_to_resource(struct of_pci_range *range, in of_pci_range_to_resource() argument
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()
312 * ISA bus specific translator
329 static u64 of_bus_isa_map(__be32 *addr, const __be32 *range, int na, int ns, in of_bus_isa_map() argument
335 if ((addr[0] ^ range[0]) & cpu_to_be32(1)) in of_bus_isa_map()
339 cp = of_read_number(range + 1, na - 1); in of_bus_isa_map()
340 s = of_read_number(range + na + pna, ns); 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()
370 * Array of bus specific translators
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()
441 static int of_translate_one(struct device_node *parent, struct of_bus *bus, in of_translate_one() argument
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()
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()
471 strcmp(rprop, "dma-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()
502 /* Translate it into parent bus space */ 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,
508 * this walks up the tree and applies the various bus mappings on the
511 * Note: We consider that crossing any level with #size-cells == 0 to mean
526 struct of_bus *bus, *pbus; in __of_translate_address() local
537 /* Get parent & match bus type */ in __of_translate_address()
541 bus = of_match_bus(parent); in __of_translate_address()
544 bus->count_cells(dev, &na, &ns); in __of_translate_address()
551 pr_debug("bus is %s (na=%d, ns=%d) on %pOF\n", in __of_translate_address()
552 bus->name, na, ns, parent); in __of_translate_address()
559 /* Switch to parent bus */ 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()
584 /* Get new parent bus and counts */ in __of_translate_address()
586 pbus->count_cells(dev, &pna, &pns); in __of_translate_address()
592 pr_debug("parent bus is %s (na=%d, ns=%d) on %pOF\n", in __of_translate_address()
593 pbus->name, pna, pns, parent); in __of_translate_address()
595 /* Apply bus translation */ in __of_translate_address()
596 if (of_translate_one(dev, bus, pbus, addr, na, ns, pna, rprop)) in __of_translate_address()
602 bus = pbus; 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()
680 struct of_bus *bus; in of_get_address() local
683 /* Get parent & match bus type */ in of_get_address()
687 bus = of_match_bus(parent); in of_get_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()
743 return parser_init(parser, node, "dma-ranges"); in of_pci_dma_range_parser_init()
749 struct of_pci_range *range) in of_pci_range_parser_one() argument
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()
756 if (!range) 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()
805 return range; in of_pci_range_parser_one()
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
887 * @np: the device whose io range will be mapped
888 * @index: index of the io range
904 * of_io_request_and_map - Requests a resource and maps the memory mapped IO
906 * @device: the device whose io range will be mapped
907 * @index: index of the io range
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
950 * dma-ranges format:
955 * It returns -ENODEV if "dma-ranges" property was not found for this
964 struct of_range range; in of_dma_get_range() local
970 ranges = of_get_property(node, "dma-ranges", &len); in of_dma_get_range()
976 /* Once we find 'dma-ranges', then a missing one is an error */ in of_dma_get_range()
978 ret = -ENODEV; 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()
993 for_each_of_range(&parser, &range) in of_dma_get_range()
998 ret = -ENOMEM; in of_dma_get_range()
1007 for_each_of_range(&parser, &range) { in of_dma_get_range()
1009 range.bus_addr, range.cpu_addr, range.size); in of_dma_get_range()
1010 if (range.cpu_addr == OF_BAD_ADDR) { in of_dma_get_range()
1012 range.bus_addr, node); 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
1045 if (of_property_read_bool(node, "dma-coherent")) { in of_dma_is_coherent()