Lines Matching +full:bus +full:- +full:range
1 // SPDX-License-Identifier: GPL-2.0
32 while (na--) in of_dump_addr()
40 /* Callbacks for bus specific translators */
47 u64 (*map)(__be32 *addr, const __be32 *range,
54 * Default translator (generic bus)
66 static u64 of_bus_default_map(__be32 *addr, const __be32 *range, in of_bus_default_map() argument
71 cp = of_read_number(range, na); in of_bus_default_map()
72 s = of_read_number(range + na + pna, ns); in of_bus_default_map()
81 return da - cp; in of_bus_default_map()
90 addr[na - 2] = cpu_to_be32(a >> 32); in of_bus_default_translate()
91 addr[na - 1] = cpu_to_be32(a & 0xffffffffu); in of_bus_default_translate()
103 * PCI bus specific translator
110 * "vci" is for the /chaos bridge on 1st-gen PCI powermacs in of_bus_pci_match()
113 return !strcmp(np->type, "pci") || !strcmp(np->type, "pciex") || in of_bus_pci_match()
114 !strcmp(np->type, "vci") || !strcmp(np->type, "ht"); in of_bus_pci_match()
145 static u64 of_bus_pci_map(__be32 *addr, const __be32 *range, int na, int ns, in of_bus_pci_map() argument
152 rf = of_bus_pci_get_flags(range); in of_bus_pci_map()
159 cp = of_read_number(range + 1, na - 1); in of_bus_pci_map()
160 s = of_read_number(range + na + pna, ns); in of_bus_pci_map()
161 da = of_read_number(addr + 1, na - 1); in of_bus_pci_map()
169 return da - cp; in of_bus_pci_map()
174 return of_bus_default_translate(addr + 1, offset, na - 1); in of_bus_pci_translate()
183 struct of_bus *bus; in of_get_pci_address() local
186 /* Get parent & match bus type */ in of_get_pci_address()
190 bus = of_match_bus(parent); in of_get_pci_address()
191 if (strcmp(bus->name, "pci")) { in of_get_pci_address()
195 bus->count_cells(dev, &na, &ns); in of_get_pci_address()
200 /* Get "reg" or "assigned-addresses" property */ in of_get_pci_address()
201 prop = of_get_property(dev, bus->addresses, &psize); in of_get_pci_address()
207 for (i = 0; psize >= onesize; psize -= onesize, prop += onesize, i++) { in of_get_pci_address()
213 *flags = bus->get_flags(prop); in of_get_pci_address()
230 return -EINVAL; in of_pci_address_to_resource()
241 parser->node = node; in parser_init()
242 parser->pna = of_n_addr_cells(node); in parser_init()
243 parser->np = parser->pna + na + ns; in parser_init()
245 parser->range = of_get_property(node, name, &rlen); in parser_init()
246 if (parser->range == NULL) in parser_init()
247 return -ENOENT; in parser_init()
249 parser->end = parser->range + rlen / sizeof(__be32); in parser_init()
264 return parser_init(parser, node, "dma-ranges"); in of_pci_dma_range_parser_init()
269 struct of_pci_range *range) in of_pci_range_parser_one() argument
273 if (!range) in of_pci_range_parser_one()
276 if (!parser->range || parser->range + parser->np > parser->end) in of_pci_range_parser_one()
279 range->pci_space = be32_to_cpup(parser->range); in of_pci_range_parser_one()
280 range->flags = of_bus_pci_get_flags(parser->range); in of_pci_range_parser_one()
281 range->pci_addr = of_read_number(parser->range + 1, ns); in of_pci_range_parser_one()
282 range->cpu_addr = of_translate_address(parser->node, in of_pci_range_parser_one()
283 parser->range + na); in of_pci_range_parser_one()
284 range->size = of_read_number(parser->range + parser->pna + na, ns); in of_pci_range_parser_one()
286 parser->range += parser->np; in of_pci_range_parser_one()
289 while (parser->range + parser->np <= parser->end) { in of_pci_range_parser_one()
293 flags = of_bus_pci_get_flags(parser->range); in of_pci_range_parser_one()
294 pci_addr = of_read_number(parser->range + 1, ns); in of_pci_range_parser_one()
295 cpu_addr = of_translate_address(parser->node, in of_pci_range_parser_one()
296 parser->range + na); in of_pci_range_parser_one()
297 size = of_read_number(parser->range + parser->pna + na, ns); in of_pci_range_parser_one()
299 if (flags != range->flags) in of_pci_range_parser_one()
301 if (pci_addr != range->pci_addr + range->size || in of_pci_range_parser_one()
302 cpu_addr != range->cpu_addr + range->size) in of_pci_range_parser_one()
305 range->size += size; in of_pci_range_parser_one()
306 parser->range += parser->np; in of_pci_range_parser_one()
309 return range; in of_pci_range_parser_one()
314 * of_pci_range_to_resource - Create a resource from an of_pci_range
315 * @range: the PCI range that describes the resource
316 * @np: device node where the range belongs to
318 * reflect the values contained in the range.
320 * Returns EINVAL if the range cannot be converted to resource.
322 * Note that if the range is an IO range, the resource will be converted
324 * if the range cannot be matched to any host bridge IO space (our case here).
325 * To guard against that we try to register the IO range first.
328 int of_pci_range_to_resource(struct of_pci_range *range, in of_pci_range_to_resource() argument
332 res->flags = range->flags; in of_pci_range_to_resource()
333 res->parent = res->child = res->sibling = NULL; in of_pci_range_to_resource()
334 res->name = np->full_name; in of_pci_range_to_resource()
336 if (res->flags & IORESOURCE_IO) { in of_pci_range_to_resource()
338 err = pci_register_io_range(&np->fwnode, range->cpu_addr, in of_pci_range_to_resource()
339 range->size); in of_pci_range_to_resource()
342 port = pci_address_to_pio(range->cpu_addr); in of_pci_range_to_resource()
343 if (port == (unsigned long)-1) { in of_pci_range_to_resource()
344 err = -EINVAL; in of_pci_range_to_resource()
347 res->start = port; in of_pci_range_to_resource()
350 upper_32_bits(range->cpu_addr)) { in of_pci_range_to_resource()
351 err = -EINVAL; in of_pci_range_to_resource()
355 res->start = range->cpu_addr; in of_pci_range_to_resource()
357 res->end = res->start + range->size - 1; in of_pci_range_to_resource()
361 res->start = (resource_size_t)OF_BAD_ADDR; in of_pci_range_to_resource()
362 res->end = (resource_size_t)OF_BAD_ADDR; in of_pci_range_to_resource()
369 * ISA bus specific translator
374 return !strcmp(np->name, "isa"); in of_bus_isa_match()
386 static u64 of_bus_isa_map(__be32 *addr, const __be32 *range, int na, int ns, in of_bus_isa_map() argument
392 if ((addr[0] ^ range[0]) & cpu_to_be32(1)) in of_bus_isa_map()
396 cp = of_read_number(range + 1, na - 1); in of_bus_isa_map()
397 s = of_read_number(range + na + pna, ns); in of_bus_isa_map()
398 da = of_read_number(addr + 1, na - 1); in of_bus_isa_map()
406 return da - cp; in of_bus_isa_map()
411 return of_bus_default_translate(addr + 1, offset, na - 1); in of_bus_isa_translate()
427 * Array of bus specific translators
435 .addresses = "assigned-addresses",
480 static int quirk_state = -1; in of_empty_ranges_quirk()
482 /* PA-SEMI sdc DT bug */ in of_empty_ranges_quirk()
483 if (of_device_is_compatible(np, "1682m-sdc")) in of_empty_ranges_quirk()
496 static int of_translate_one(struct device_node *parent, struct of_bus *bus, in of_translate_one() argument
507 * crossing a non-translatable boundary, and thus the addresses in of_translate_one()
510 * what Apple understood, and they do have things like /uni-n or in of_translate_one()
516 * the first place. --BenH. in of_translate_one()
519 * This code is only enabled on powerpc. --gcl in of_translate_one()
538 for (; rlen >= rone; rlen -= rone, ranges += rone) { in of_translate_one()
539 offset = bus->map(addr, ranges, na, ns, pna); in of_translate_one()
553 /* Translate it into parent bus space */ in of_translate_one()
554 return pbus->translate(addr, offset, pna); in of_translate_one()
558 * Translate an address from the device-tree into a CPU physical address,
559 * this walks up the tree and applies the various bus mappings on the
562 * Note: We consider that crossing any level with #size-cells == 0 to mean
576 struct of_bus *bus, *pbus; in __of_translate_address() local
587 /* Get parent & match bus type */ in __of_translate_address()
591 bus = of_match_bus(parent); in __of_translate_address()
594 bus->count_cells(dev, &na, &ns); in __of_translate_address()
601 pr_debug("bus is %s (na=%d, ns=%d) on %pOF\n", in __of_translate_address()
602 bus->name, na, ns, parent); in __of_translate_address()
609 /* Switch to parent bus */ in __of_translate_address()
625 iorange = find_io_range_by_fwnode(&dev->fwnode); in __of_translate_address()
626 if (iorange && (iorange->flags != LOGIC_PIO_CPU_MMIO)) { in __of_translate_address()
627 result = of_read_number(addr + 1, na - 1); in __of_translate_address()
634 /* Get new parent bus and counts */ in __of_translate_address()
636 pbus->count_cells(dev, &pna, &pns); in __of_translate_address()
642 pr_debug("parent bus is %s (na=%d, ns=%d) on %pOF\n", in __of_translate_address()
643 pbus->name, pna, pns, parent); in __of_translate_address()
645 /* Apply bus translation */ in __of_translate_address()
646 if (of_translate_one(dev, bus, pbus, addr, na, ns, pna, rprop)) in __of_translate_address()
652 bus = pbus; in __of_translate_address()
683 ret = __of_translate_address(dev, in_addr, "dma-ranges", &host); in of_translate_dma_address()
700 struct of_bus *bus; in of_get_address() local
703 /* Get parent & match bus type */ in of_get_address()
707 bus = of_match_bus(parent); in of_get_address()
708 bus->count_cells(dev, &na, &ns); in of_get_address()
713 /* Get "reg" or "assigned-addresses" property */ in of_get_address()
714 prop = of_get_property(dev, bus->addresses, &psize); in of_get_address()
720 for (i = 0; psize >= onesize; psize -= onesize, prop += onesize, i++) in of_get_address()
725 *flags = bus->get_flags(prop); in of_get_address()
741 /* host-specific port access */ in of_translate_ioport()
742 port = logic_pio_trans_hwaddr(&host->fwnode, taddr, size); in of_translate_ioport()
745 /* memory-mapped I/O range */ in of_translate_ioport()
749 if (port == (unsigned long)-1) in of_translate_ioport()
766 return -EINVAL; in __of_address_to_resource()
769 return -EINVAL; in __of_address_to_resource()
772 r->start = taddr; in __of_address_to_resource()
773 r->end = taddr + size - 1; in __of_address_to_resource()
774 r->flags = flags; in __of_address_to_resource()
775 r->name = name ? name : dev->full_name; in __of_address_to_resource()
781 * of_address_to_resource - Translate device tree address and return as resource
798 return -EINVAL; in of_address_to_resource()
800 /* Get optional "reg-names" property to add a name to a resource */ in of_address_to_resource()
801 of_property_read_string_index(dev, "reg-names", index, &name); in of_address_to_resource()
827 * of_iomap - Maps the memory mapped IO for a given device_node
828 * @device: the device whose io range will be mapped
829 * @index: index of the io range
845 * of_io_request_and_map - Requests a resource and maps the memory mapped IO
847 * @device: the device whose io range will be mapped
848 * @index: index of the io range
865 return IOMEM_ERR_PTR(-EINVAL); in of_io_request_and_map()
870 return IOMEM_ERR_PTR(-EBUSY); in of_io_request_and_map()
875 return IOMEM_ERR_PTR(-ENOMEM); in of_io_request_and_map()
883 * of_dma_get_range - Get DMA range info
884 * @np: device node to get DMA range info
885 * @dma_addr: pointer to store initial DMA address of DMA range
886 * @paddr: pointer to store initial CPU address of DMA range
887 * @size: pointer to store size of DMA range
889 * Look in bottom up direction for the first "dma-ranges" property
891 * dma-ranges format:
896 * It returns -ENODEV if "dma-ranges" property was not found
908 return -EINVAL; in of_dma_get_range()
917 ranges = of_get_property(node, "dma-ranges", &len); in of_dma_get_range()
932 pr_debug("no dma-ranges found for node(%pOF)\n", np); in of_dma_get_range()
933 ret = -ENODEV; in of_dma_get_range()
941 /* dma-ranges format: in of_dma_get_range()
951 ret = -EINVAL; in of_dma_get_range()
969 * of_dma_is_coherent - Check if device is coherent
972 * It returns true if "dma-coherent" property was found
984 if (of_property_read_bool(node, "dma-coherent")) { in of_dma_is_coherent()