Lines Matching +full:bus +full:- +full:range
1 // SPDX-License-Identifier: GPL-2.0+
3 * PCI <-> OF mapping helpers
21 if (!dev->bus->dev.of_node) in pci_set_of_node()
23 dev->dev.of_node = of_pci_find_child_device(dev->bus->dev.of_node, in pci_set_of_node()
24 dev->devfn); in pci_set_of_node()
25 if (dev->dev.of_node) in pci_set_of_node()
26 dev->dev.fwnode = &dev->dev.of_node->fwnode; in pci_set_of_node()
31 of_node_put(dev->dev.of_node); in pci_release_of_node()
32 dev->dev.of_node = NULL; in pci_release_of_node()
33 dev->dev.fwnode = NULL; in pci_release_of_node()
36 void pci_set_bus_of_node(struct pci_bus *bus) in pci_set_bus_of_node() argument
40 if (bus->self == NULL) { in pci_set_bus_of_node()
41 node = pcibios_get_phb_of_node(bus); in pci_set_bus_of_node()
43 node = of_node_get(bus->self->dev.of_node); in pci_set_bus_of_node()
44 if (node && of_property_read_bool(node, "external-facing")) in pci_set_bus_of_node()
45 bus->self->external_facing = true; in pci_set_bus_of_node()
48 bus->dev.of_node = node; in pci_set_bus_of_node()
50 if (bus->dev.of_node) in pci_set_bus_of_node()
51 bus->dev.fwnode = &bus->dev.of_node->fwnode; in pci_set_bus_of_node()
54 void pci_release_bus_of_node(struct pci_bus *bus) in pci_release_bus_of_node() argument
56 of_node_put(bus->dev.of_node); in pci_release_bus_of_node()
57 bus->dev.of_node = NULL; in pci_release_bus_of_node()
58 bus->dev.fwnode = NULL; in pci_release_bus_of_node()
61 struct device_node * __weak pcibios_get_phb_of_node(struct pci_bus *bus) in pcibios_get_phb_of_node() argument
64 if (WARN_ON(bus->self || bus->parent)) in pcibios_get_phb_of_node()
69 * create above the root bus or its own parent. Normally only in pcibios_get_phb_of_node()
72 if (bus->bridge->of_node) in pcibios_get_phb_of_node()
73 return of_node_get(bus->bridge->of_node); in pcibios_get_phb_of_node()
74 if (bus->bridge->parent && bus->bridge->parent->of_node) in pcibios_get_phb_of_node()
75 return of_node_get(bus->bridge->parent->of_node); in pcibios_get_phb_of_node()
79 struct irq_domain *pci_host_bridge_of_msi_domain(struct pci_bus *bus) in pci_host_bridge_of_msi_domain() argument
84 if (!bus->dev.of_node) in pci_host_bridge_of_msi_domain()
88 d = of_msi_get_domain(&bus->dev, bus->dev.of_node, DOMAIN_BUS_PCI_MSI); in pci_host_bridge_of_msi_domain()
93 * If we don't have an msi-parent property, look for a domain in pci_host_bridge_of_msi_domain()
96 d = irq_find_matching_host(bus->dev.of_node, DOMAIN_BUS_PCI_MSI); in pci_host_bridge_of_msi_domain()
100 return irq_find_host(bus->dev.of_node); in pci_host_bridge_of_msi_domain()
127 * Some OFs create a parent node "multifunc-device" as in of_pci_find_child_device()
128 * a fake root for all functions of a multi-function in of_pci_find_child_device()
131 if (of_node_name_eq(node, "multifunc-device")) { in of_pci_find_child_device()
145 * of_pci_get_devfn() - Get device and function numbers for a device node
148 * Parses a standard 5-cell PCI resource and returns an 8-bit value that can
167 * of_pci_parse_bus_range() - parse the bus-range property of a PCI device
169 * @res: address to a struct resource to return the bus-range
171 * Returns 0 on success or a negative error-code on failure.
178 error = of_property_read_u32_array(node, "bus-range", bus_range, in of_pci_parse_bus_range()
183 res->name = node->name; in of_pci_parse_bus_range()
184 res->start = bus_range[0]; in of_pci_parse_bus_range()
185 res->end = bus_range[1]; in of_pci_parse_bus_range()
186 res->flags = IORESOURCE_BUS; in of_pci_parse_bus_range()
194 * finding a property called "linux,pci-domain" of the given device node.
198 * Returns the associated domain number from DT in the range [0-0xffff], or
206 error = of_property_read_u32(node, "linux,pci-domain", &domain); in of_get_pci_domain_nr()
215 * of_pci_check_probe_only - Setup probe only mode if linux,pci-probe-only
223 ret = of_property_read_u32(of_chosen, "linux,pci-probe-only", &val); in of_pci_check_probe_only()
225 if (ret == -ENODATA || ret == -EOVERFLOW) in of_pci_check_probe_only()
226 pr_warn("linux,pci-probe-only without valid value, ignoring\n"); in of_pci_check_probe_only()
240 * devm_of_pci_get_host_bridge_resources() - Resource-managed parsing of PCI
243 * @busno: bus number associated with the bridge root bus
245 * @resources: list where the range of resources will be added after DT parsing
246 * @ib_resources: list where the range of inbound resources (with addresses
247 * from 'dma-ranges') will be added after DT parsing
249 * address for the start of the I/O range. Can be NULL if the caller doesn't
256 * It returns zero if the range parsing has been successful or a standard error
265 struct device_node *dev_node = dev->of_node; in devm_of_pci_get_host_bridge_resources()
268 struct of_pci_range range; in devm_of_pci_get_host_bridge_resources() local
278 return -ENOMEM; in devm_of_pci_get_host_bridge_resources()
284 bus_range->start = busno; in devm_of_pci_get_host_bridge_resources()
285 bus_range->end = bus_max; in devm_of_pci_get_host_bridge_resources()
286 bus_range->flags = IORESOURCE_BUS; in devm_of_pci_get_host_bridge_resources()
287 dev_info(dev, " No bus range found for %pOF, using %pR\n", in devm_of_pci_get_host_bridge_resources()
290 if (bus_range->end > bus_range->start + bus_max) in devm_of_pci_get_host_bridge_resources()
291 bus_range->end = bus_range->start + bus_max; in devm_of_pci_get_host_bridge_resources()
301 for_each_of_pci_range(&parser, &range) { in devm_of_pci_get_host_bridge_resources()
303 if ((range.flags & IORESOURCE_TYPE_BITS) == IORESOURCE_IO) in devm_of_pci_get_host_bridge_resources()
305 else if ((range.flags & IORESOURCE_TYPE_BITS) == IORESOURCE_MEM) in devm_of_pci_get_host_bridge_resources()
309 dev_info(dev, " %6s %#012llx..%#012llx -> %#012llx\n", in devm_of_pci_get_host_bridge_resources()
310 range_type, range.cpu_addr, in devm_of_pci_get_host_bridge_resources()
311 range.cpu_addr + range.size - 1, range.pci_addr); in devm_of_pci_get_host_bridge_resources()
314 * If we failed translation or got a zero-sized region in devm_of_pci_get_host_bridge_resources()
315 * then skip this range in devm_of_pci_get_host_bridge_resources()
317 if (range.cpu_addr == OF_BAD_ADDR || range.size == 0) in devm_of_pci_get_host_bridge_resources()
320 err = of_pci_range_to_resource(&range, dev_node, &tmp_res); in devm_of_pci_get_host_bridge_resources()
326 err = -ENOMEM; in devm_of_pci_get_host_bridge_resources()
332 …dev_err(dev, "I/O range found for %pOF. Please provide an io_base pointer to save CPU base address… in devm_of_pci_get_host_bridge_resources()
334 err = -EINVAL; in devm_of_pci_get_host_bridge_resources()
338 …dev_warn(dev, "More than one I/O resource converted for %pOF. CPU base address for old range lost!… in devm_of_pci_get_host_bridge_resources()
340 *io_base = range.cpu_addr; in devm_of_pci_get_host_bridge_resources()
343 pci_add_resource_offset(resources, res, res->start - range.pci_addr); in devm_of_pci_get_host_bridge_resources()
346 /* Check for dma-ranges property */ in devm_of_pci_get_host_bridge_resources()
353 dev_dbg(dev, "Parsing dma-ranges property...\n"); in devm_of_pci_get_host_bridge_resources()
354 for_each_of_pci_range(&parser, &range) { in devm_of_pci_get_host_bridge_resources()
357 * If we failed translation or got a zero-sized region in devm_of_pci_get_host_bridge_resources()
358 * then skip this range in devm_of_pci_get_host_bridge_resources()
360 if (((range.flags & IORESOURCE_TYPE_BITS) != IORESOURCE_MEM) || in devm_of_pci_get_host_bridge_resources()
361 range.cpu_addr == OF_BAD_ADDR || range.size == 0) in devm_of_pci_get_host_bridge_resources()
364 dev_info(dev, " %6s %#012llx..%#012llx -> %#012llx\n", in devm_of_pci_get_host_bridge_resources()
365 "IB MEM", range.cpu_addr, in devm_of_pci_get_host_bridge_resources()
366 range.cpu_addr + range.size - 1, range.pci_addr); in devm_of_pci_get_host_bridge_resources()
369 err = of_pci_range_to_resource(&range, dev_node, &tmp_res); in devm_of_pci_get_host_bridge_resources()
375 err = -ENOMEM; in devm_of_pci_get_host_bridge_resources()
381 if (entry->res->start > res->start) in devm_of_pci_get_host_bridge_resources()
384 pci_add_resource_offset(&entry->node, res, in devm_of_pci_get_host_bridge_resources()
385 res->start - range.pci_addr); in devm_of_pci_get_host_bridge_resources()
397 * of_irq_parse_pci - Resolve the interrupt for a PCI device
402 * device-node exists for a given pci_dev, it will use normal OF tree
404 * PCI tree until an device-node is found, at which point it will finish
428 * interrupt spec. we assume #interrupt-cells is 1, which is standard in of_irq_parse_pci()
436 return -ENODEV; in of_irq_parse_pci()
441 ppdev = pdev->bus->self; in of_irq_parse_pci()
445 ppnode = pci_bus_to_OF_node(pdev->bus); in of_irq_parse_pci()
449 rc = -EINVAL; in of_irq_parse_pci()
458 * Ok, we have found a parent with a device-node, hand over to in of_irq_parse_pci()
461 * resolution. Note that we use the linux bus number which may in of_irq_parse_pci()
462 * not match your firmware bus numbering. in of_irq_parse_pci()
463 * Fortunately, in most cases, interrupt-map-mask doesn't in of_irq_parse_pci()
464 * include the bus number as part of the matching. in of_irq_parse_pci()
480 out_irq->np = ppnode; in of_irq_parse_pci()
481 out_irq->args_count = 1; in of_irq_parse_pci()
482 out_irq->args[0] = pin; in of_irq_parse_pci()
483 laddr[0] = cpu_to_be32((pdev->bus->number << 16) | (pdev->devfn << 8)); in of_irq_parse_pci()
490 if (rc == -ENOENT) { in of_irq_parse_pci()
491 dev_warn(&pdev->dev, in of_irq_parse_pci()
492 "%s: no interrupt-map found, INTx interrupts not available\n", in of_irq_parse_pci()
497 dev_err(&pdev->dev, "%s: failed with rc=%d\n", __func__, rc); in of_irq_parse_pci()
503 * of_irq_parse_and_map_pci() - Decode a PCI IRQ from the device tree and map to a VIRQ
533 INIT_LIST_HEAD(&bridge->windows); in pci_parse_request_of_pci_ranges()
534 INIT_LIST_HEAD(&bridge->dma_ranges); in pci_parse_request_of_pci_ranges()
536 err = devm_of_pci_get_host_bridge_resources(dev, 0, 0xff, &bridge->windows, in pci_parse_request_of_pci_ranges()
537 &bridge->dma_ranges, &iobase); in pci_parse_request_of_pci_ranges()
541 err = devm_request_pci_bus_resources(dev, &bridge->windows); in pci_parse_request_of_pci_ranges()
545 resource_list_for_each_entry_safe(win, tmp, &bridge->windows) { in pci_parse_request_of_pci_ranges()
546 struct resource *res = win->res; in pci_parse_request_of_pci_ranges()
558 res_valid |= !(res->flags & IORESOURCE_PREFETCH); in pci_parse_request_of_pci_ranges()
564 dev_warn(dev, "non-prefetchable memory resource required\n"); in pci_parse_request_of_pci_ranges()
571 if (!dev->of_node) in devm_of_pci_bridge_init()
574 bridge->swizzle_irq = pci_common_swizzle; in devm_of_pci_bridge_init()
575 bridge->map_irq = of_irq_parse_and_map_pci; in devm_of_pci_bridge_init()
584 * a property called "max-link-speed" of the given device node.
595 if (of_property_read_u32(node, "max-link-speed", &max_link_speed) || in of_pci_get_max_link_speed()
597 return -EINVAL; in of_pci_get_max_link_speed()