2 * Port for PPC64 David Engebretsen, IBM Corp.
3 * Contains common pci routines for ppc64 platform, pSeries and iSeries brands.
5 * Copyright (C) 2003 Anton Blanchard <anton@au.ibm.com>, IBM
6 * Rework, based on alpha PCI code.
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License
10 * as published by the Free Software Foundation; either version
11 * 2 of the License, or (at your option) any later version.
16 #include <linux/kernel.h>
17 #include <linux/pci.h>
18 #include <linux/string.h>
19 #include <linux/init.h>
20 #include <linux/bootmem.h>
22 #include <linux/list.h>
23 #include <linux/syscalls.h>
24 #include <linux/irq.h>
25 #include <linux/vmalloc.h>
27 #include <asm/processor.h>
30 #include <asm/pci-bridge.h>
31 #include <asm/byteorder.h>
32 #include <asm/machdep.h>
33 #include <asm/ppc-pci.h>
37 #define DBG(fmt...) printk(fmt)
42 unsigned long pci_probe_only = 1;
43 int pci_assign_all_buses = 0;
45 static void fixup_resource(struct resource *res, struct pci_dev *dev);
46 static void do_bus_setup(struct pci_bus *bus);
48 /* pci_io_base -- the base address from which io bars are offsets.
49 * This is the lowest I/O base address (so bar values are always positive),
50 * and it *must* be the start of ISA space if an ISA bus exists because
51 * ISA drivers use hard coded offsets. If no ISA bus exists nothing
52 * is mapped on the first 64K of IO space
54 unsigned long pci_io_base = ISA_IO_BASE;
55 EXPORT_SYMBOL(pci_io_base);
59 static struct dma_mapping_ops *pci_dma_ops;
61 void set_pci_dma_ops(struct dma_mapping_ops *dma_ops)
63 pci_dma_ops = dma_ops;
66 struct dma_mapping_ops *get_pci_dma_ops(void)
70 EXPORT_SYMBOL(get_pci_dma_ops);
72 static void fixup_broken_pcnet32(struct pci_dev* dev)
74 if ((dev->class>>8 == PCI_CLASS_NETWORK_ETHERNET)) {
75 dev->vendor = PCI_VENDOR_ID_AMD;
76 pci_write_config_word(dev, PCI_VENDOR_ID, PCI_VENDOR_ID_AMD);
79 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TRIDENT, PCI_ANY_ID, fixup_broken_pcnet32);
81 void pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region,
84 unsigned long offset = 0;
85 struct pci_controller *hose = pci_bus_to_host(dev->bus);
90 if (res->flags & IORESOURCE_IO)
91 offset = (unsigned long)hose->io_base_virt - _IO_BASE;
93 if (res->flags & IORESOURCE_MEM)
94 offset = hose->pci_mem_offset;
96 region->start = res->start - offset;
97 region->end = res->end - offset;
100 void pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res,
101 struct pci_bus_region *region)
103 unsigned long offset = 0;
104 struct pci_controller *hose = pci_bus_to_host(dev->bus);
109 if (res->flags & IORESOURCE_IO)
110 offset = (unsigned long)hose->io_base_virt - _IO_BASE;
112 if (res->flags & IORESOURCE_MEM)
113 offset = hose->pci_mem_offset;
115 res->start = region->start + offset;
116 res->end = region->end + offset;
119 #ifdef CONFIG_HOTPLUG
120 EXPORT_SYMBOL(pcibios_resource_to_bus);
121 EXPORT_SYMBOL(pcibios_bus_to_resource);
125 * We need to avoid collisions with `mirrored' VGA ports
126 * and other strange ISA hardware, so we always want the
127 * addresses to be allocated in the 0x000-0x0ff region
130 * Why? Because some silly external IO cards only decode
131 * the low 10 bits of the IO address. The 0x00-0xff region
132 * is reserved for motherboard devices that decode all 16
133 * bits, so it's ok to allocate at, say, 0x2800-0x28ff,
134 * but we want to try to avoid allocating at 0x2900-0x2bff
135 * which might have be mirrored at 0x0100-0x03ff..
137 void pcibios_align_resource(void *data, struct resource *res,
138 resource_size_t size, resource_size_t align)
140 struct pci_dev *dev = data;
141 struct pci_controller *hose = pci_bus_to_host(dev->bus);
142 resource_size_t start = res->start;
143 unsigned long alignto;
145 if (res->flags & IORESOURCE_IO) {
146 unsigned long offset = (unsigned long)hose->io_base_virt -
148 /* Make sure we start at our min on all hoses */
149 if (start - offset < PCIBIOS_MIN_IO)
150 start = PCIBIOS_MIN_IO + offset;
153 * Put everything into 0x00-0xff region modulo 0x400
156 start = (start + 0x3ff) & ~0x3ff;
158 } else if (res->flags & IORESOURCE_MEM) {
159 /* Make sure we start at our min on all hoses */
160 if (start - hose->pci_mem_offset < PCIBIOS_MIN_MEM)
161 start = PCIBIOS_MIN_MEM + hose->pci_mem_offset;
163 /* Align to multiple of size of minimum base. */
164 alignto = max(0x1000UL, align);
165 start = ALIGN(start, alignto);
171 void __devinit pcibios_claim_one_bus(struct pci_bus *b)
174 struct pci_bus *child_bus;
176 list_for_each_entry(dev, &b->devices, bus_list) {
179 for (i = 0; i < PCI_NUM_RESOURCES; i++) {
180 struct resource *r = &dev->resource[i];
182 if (r->parent || !r->start || !r->flags)
184 pci_claim_resource(dev, i);
188 list_for_each_entry(child_bus, &b->children, node)
189 pcibios_claim_one_bus(child_bus);
191 #ifdef CONFIG_HOTPLUG
192 EXPORT_SYMBOL_GPL(pcibios_claim_one_bus);
195 static void __init pcibios_claim_of_setup(void)
199 list_for_each_entry(b, &pci_root_buses, node)
200 pcibios_claim_one_bus(b);
203 static u32 get_int_prop(struct device_node *np, const char *name, u32 def)
208 prop = of_get_property(np, name, &len);
209 if (prop && len >= 4)
214 static unsigned int pci_parse_of_flags(u32 addr0)
216 unsigned int flags = 0;
218 if (addr0 & 0x02000000) {
219 flags = IORESOURCE_MEM | PCI_BASE_ADDRESS_SPACE_MEMORY;
220 flags |= (addr0 >> 22) & PCI_BASE_ADDRESS_MEM_TYPE_64;
221 flags |= (addr0 >> 28) & PCI_BASE_ADDRESS_MEM_TYPE_1M;
222 if (addr0 & 0x40000000)
223 flags |= IORESOURCE_PREFETCH
224 | PCI_BASE_ADDRESS_MEM_PREFETCH;
225 } else if (addr0 & 0x01000000)
226 flags = IORESOURCE_IO | PCI_BASE_ADDRESS_SPACE_IO;
231 static void pci_parse_of_addrs(struct device_node *node, struct pci_dev *dev)
235 struct resource *res;
240 addrs = of_get_property(node, "assigned-addresses", &proplen);
243 DBG(" parse addresses (%d bytes) @ %p\n", proplen, addrs);
244 for (; proplen >= 20; proplen -= 20, addrs += 5) {
245 flags = pci_parse_of_flags(addrs[0]);
248 base = of_read_number(&addrs[1], 2);
249 size = of_read_number(&addrs[3], 2);
253 DBG(" base: %llx, size: %llx, i: %x\n",
254 (unsigned long long)base, (unsigned long long)size, i);
256 if (PCI_BASE_ADDRESS_0 <= i && i <= PCI_BASE_ADDRESS_5) {
257 res = &dev->resource[(i - PCI_BASE_ADDRESS_0) >> 2];
258 } else if (i == dev->rom_base_reg) {
259 res = &dev->resource[PCI_ROM_RESOURCE];
260 flags |= IORESOURCE_READONLY | IORESOURCE_CACHEABLE;
262 printk(KERN_ERR "PCI: bad cfg reg num 0x%x\n", i);
266 res->end = base + size - 1;
268 res->name = pci_name(dev);
269 fixup_resource(res, dev);
273 struct pci_dev *of_create_pci_dev(struct device_node *node,
274 struct pci_bus *bus, int devfn)
279 dev = alloc_pci_dev();
282 type = of_get_property(node, "device_type", NULL);
286 DBG(" create device, devfn: %x, type: %s\n", devfn, type);
290 dev->dev.parent = bus->bridge;
291 dev->dev.bus = &pci_bus_type;
293 dev->multifunction = 0; /* maybe a lie? */
295 dev->vendor = get_int_prop(node, "vendor-id", 0xffff);
296 dev->device = get_int_prop(node, "device-id", 0xffff);
297 dev->subsystem_vendor = get_int_prop(node, "subsystem-vendor-id", 0);
298 dev->subsystem_device = get_int_prop(node, "subsystem-id", 0);
300 dev->cfg_size = pci_cfg_space_size(dev);
302 sprintf(pci_name(dev), "%04x:%02x:%02x.%d", pci_domain_nr(bus),
303 dev->bus->number, PCI_SLOT(devfn), PCI_FUNC(devfn));
304 dev->class = get_int_prop(node, "class-code", 0);
305 dev->revision = get_int_prop(node, "revision-id", 0);
307 DBG(" class: 0x%x\n", dev->class);
308 DBG(" revision: 0x%x\n", dev->revision);
310 dev->current_state = 4; /* unknown power state */
311 dev->error_state = pci_channel_io_normal;
312 dev->dma_mask = 0xffffffff;
314 if (!strcmp(type, "pci") || !strcmp(type, "pciex")) {
315 /* a PCI-PCI bridge */
316 dev->hdr_type = PCI_HEADER_TYPE_BRIDGE;
317 dev->rom_base_reg = PCI_ROM_ADDRESS1;
318 } else if (!strcmp(type, "cardbus")) {
319 dev->hdr_type = PCI_HEADER_TYPE_CARDBUS;
321 dev->hdr_type = PCI_HEADER_TYPE_NORMAL;
322 dev->rom_base_reg = PCI_ROM_ADDRESS;
323 /* Maybe do a default OF mapping here */
327 pci_parse_of_addrs(node, dev);
329 DBG(" adding to system ...\n");
331 pci_device_add(dev, bus);
335 EXPORT_SYMBOL(of_create_pci_dev);
337 void __devinit of_scan_bus(struct device_node *node,
340 struct device_node *child = NULL;
345 DBG("of_scan_bus(%s) bus no %d... \n", node->full_name, bus->number);
347 while ((child = of_get_next_child(node, child)) != NULL) {
348 DBG(" * %s\n", child->full_name);
349 reg = of_get_property(child, "reg", ®len);
350 if (reg == NULL || reglen < 20)
352 devfn = (reg[0] >> 8) & 0xff;
354 /* create a new pci_dev for this device */
355 dev = of_create_pci_dev(child, bus, devfn);
358 DBG("dev header type: %x\n", dev->hdr_type);
360 if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE ||
361 dev->hdr_type == PCI_HEADER_TYPE_CARDBUS)
362 of_scan_pci_bridge(child, dev);
367 EXPORT_SYMBOL(of_scan_bus);
369 void __devinit of_scan_pci_bridge(struct device_node *node,
373 const u32 *busrange, *ranges;
375 struct resource *res;
379 DBG("of_scan_pci_bridge(%s)\n", node->full_name);
381 /* parse bus-range property */
382 busrange = of_get_property(node, "bus-range", &len);
383 if (busrange == NULL || len != 8) {
384 printk(KERN_DEBUG "Can't get bus-range for PCI-PCI bridge %s\n",
388 ranges = of_get_property(node, "ranges", &len);
389 if (ranges == NULL) {
390 printk(KERN_DEBUG "Can't get ranges for PCI-PCI bridge %s\n",
395 bus = pci_add_new_bus(dev->bus, dev, busrange[0]);
397 printk(KERN_ERR "Failed to create pci bus for %s\n",
402 bus->primary = dev->bus->number;
403 bus->subordinate = busrange[1];
407 /* parse ranges property */
408 /* PCI #address-cells == 3 and #size-cells == 2 always */
409 res = &dev->resource[PCI_BRIDGE_RESOURCES];
410 for (i = 0; i < PCI_NUM_RESOURCES - PCI_BRIDGE_RESOURCES; ++i) {
412 bus->resource[i] = res;
416 for (; len >= 32; len -= 32, ranges += 8) {
417 flags = pci_parse_of_flags(ranges[0]);
418 size = of_read_number(&ranges[6], 2);
419 if (flags == 0 || size == 0)
421 if (flags & IORESOURCE_IO) {
422 res = bus->resource[0];
424 printk(KERN_ERR "PCI: ignoring extra I/O range"
425 " for bridge %s\n", node->full_name);
429 if (i >= PCI_NUM_RESOURCES - PCI_BRIDGE_RESOURCES) {
430 printk(KERN_ERR "PCI: too many memory ranges"
431 " for bridge %s\n", node->full_name);
434 res = bus->resource[i];
437 res->start = of_read_number(&ranges[1], 2);
438 res->end = res->start + size - 1;
440 fixup_resource(res, dev);
442 sprintf(bus->name, "PCI Bus %04x:%02x", pci_domain_nr(bus),
444 DBG(" bus name: %s\n", bus->name);
446 mode = PCI_PROBE_NORMAL;
447 if (ppc_md.pci_probe_mode)
448 mode = ppc_md.pci_probe_mode(bus);
449 DBG(" probe mode: %d\n", mode);
451 if (mode == PCI_PROBE_DEVTREE)
452 of_scan_bus(node, bus);
453 else if (mode == PCI_PROBE_NORMAL)
454 pci_scan_child_bus(bus);
456 EXPORT_SYMBOL(of_scan_pci_bridge);
458 void __devinit scan_phb(struct pci_controller *hose)
461 struct device_node *node = hose->dn;
463 struct resource *res;
465 DBG("Scanning PHB %s\n", node ? node->full_name : "<NO NAME>");
467 bus = pci_create_bus(hose->parent, hose->first_busno, hose->ops, node);
469 printk(KERN_ERR "Failed to create bus for PCI domain %04x\n",
470 hose->global_number);
473 bus->secondary = hose->first_busno;
476 pcibios_map_io_space(bus);
478 bus->resource[0] = res = &hose->io_resource;
479 if (res->flags && request_resource(&ioport_resource, res)) {
480 printk(KERN_ERR "Failed to request PCI IO region "
481 "on PCI domain %04x\n", hose->global_number);
482 DBG("res->start = 0x%016lx, res->end = 0x%016lx\n",
483 res->start, res->end);
486 for (i = 0; i < 3; ++i) {
487 res = &hose->mem_resources[i];
488 bus->resource[i+1] = res;
489 if (res->flags && request_resource(&iomem_resource, res))
490 printk(KERN_ERR "Failed to request PCI memory region "
491 "on PCI domain %04x\n", hose->global_number);
494 mode = PCI_PROBE_NORMAL;
496 if (node && ppc_md.pci_probe_mode)
497 mode = ppc_md.pci_probe_mode(bus);
498 DBG(" probe mode: %d\n", mode);
499 if (mode == PCI_PROBE_DEVTREE) {
500 bus->subordinate = hose->last_busno;
501 of_scan_bus(node, bus);
504 if (mode == PCI_PROBE_NORMAL)
505 hose->last_busno = bus->subordinate = pci_scan_child_bus(bus);
508 static int __init pcibios_init(void)
510 struct pci_controller *hose, *tmp;
512 /* For now, override phys_mem_access_prot. If we need it,
513 * later, we may move that initialization to each ppc_md
515 ppc_md.phys_mem_access_prot = pci_phys_mem_access_prot;
517 printk(KERN_DEBUG "PCI: Probing PCI hardware\n");
519 /* Scan all of the recorded PCI controllers. */
520 list_for_each_entry_safe(hose, tmp, &hose_list, list_node) {
522 pci_bus_add_devices(hose->bus);
526 pcibios_claim_of_setup();
528 /* FIXME: `else' will be removed when
529 pci_assign_unassigned_resources() is able to work
530 correctly with [partially] allocated PCI tree. */
531 pci_assign_unassigned_resources();
533 /* Call machine dependent final fixup */
534 if (ppc_md.pcibios_fixup)
535 ppc_md.pcibios_fixup();
537 printk(KERN_DEBUG "PCI: Probing PCI hardware done\n");
542 subsys_initcall(pcibios_init);
544 int pcibios_enable_device(struct pci_dev *dev, int mask)
549 pci_read_config_word(dev, PCI_COMMAND, &cmd);
552 for (i = 0; i < PCI_NUM_RESOURCES; i++) {
553 struct resource *res = &dev->resource[i];
555 /* Only set up the requested stuff */
556 if (!(mask & (1<<i)))
559 if (res->flags & IORESOURCE_IO)
560 cmd |= PCI_COMMAND_IO;
561 if (res->flags & IORESOURCE_MEM)
562 cmd |= PCI_COMMAND_MEMORY;
566 printk(KERN_DEBUG "PCI: Enabling device: (%s), cmd %x\n",
568 /* Enable the appropriate bits in the PCI command register. */
569 pci_write_config_word(dev, PCI_COMMAND, cmd);
574 /* Decide whether to display the domain number in /proc */
575 int pci_proc_domain(struct pci_bus *bus)
577 struct pci_controller *hose = pci_bus_to_host(bus);
578 return hose->buid != 0;
582 #ifdef CONFIG_HOTPLUG
584 int pcibios_unmap_io_space(struct pci_bus *bus)
586 struct pci_controller *hose;
588 WARN_ON(bus == NULL);
590 /* If this is not a PHB, we only flush the hash table over
591 * the area mapped by this bridge. We don't play with the PTE
592 * mappings since we might have to deal with sub-page alignemnts
593 * so flushing the hash table is the only sane way to make sure
594 * that no hash entries are covering that removed bridge area
595 * while still allowing other busses overlapping those pages
598 struct resource *res = bus->resource[0];
600 DBG("IO unmapping for PCI-PCI bridge %s\n",
601 pci_name(bus->self));
603 __flush_hash_table_range(&init_mm, res->start + _IO_BASE,
604 res->end - res->start + 1);
608 /* Get the host bridge */
609 hose = pci_bus_to_host(bus);
611 /* Check if we have IOs allocated */
612 if (hose->io_base_alloc == 0)
615 DBG("IO unmapping for PHB %s\n", hose->dn->full_name);
616 DBG(" alloc=0x%p\n", hose->io_base_alloc);
618 /* This is a PHB, we fully unmap the IO area */
619 vunmap(hose->io_base_alloc);
623 EXPORT_SYMBOL_GPL(pcibios_unmap_io_space);
625 #endif /* CONFIG_HOTPLUG */
627 int __devinit pcibios_map_io_space(struct pci_bus *bus)
629 struct vm_struct *area;
630 unsigned long phys_page;
631 unsigned long size_page;
632 unsigned long io_virt_offset;
633 struct pci_controller *hose;
635 WARN_ON(bus == NULL);
637 /* If this not a PHB, nothing to do, page tables still exist and
638 * thus HPTEs will be faulted in when needed
641 DBG("IO mapping for PCI-PCI bridge %s\n",
642 pci_name(bus->self));
643 DBG(" virt=0x%016lx...0x%016lx\n",
644 bus->resource[0]->start + _IO_BASE,
645 bus->resource[0]->end + _IO_BASE);
649 /* Get the host bridge */
650 hose = pci_bus_to_host(bus);
651 phys_page = _ALIGN_DOWN(hose->io_base_phys, PAGE_SIZE);
652 size_page = _ALIGN_UP(hose->pci_io_size, PAGE_SIZE);
654 /* Make sure IO area address is clear */
655 hose->io_base_alloc = NULL;
657 /* If there's no IO to map on that bus, get away too */
658 if (hose->pci_io_size == 0 || hose->io_base_phys == 0)
661 /* Let's allocate some IO space for that guy. We don't pass
662 * VM_IOREMAP because we don't care about alignment tricks that
663 * the core does in that case. Maybe we should due to stupid card
664 * with incomplete address decoding but I'd rather not deal with
665 * those outside of the reserved 64K legacy region.
667 area = __get_vm_area(size_page, 0, PHB_IO_BASE, PHB_IO_END);
670 hose->io_base_alloc = area->addr;
671 hose->io_base_virt = (void __iomem *)(area->addr +
672 hose->io_base_phys - phys_page);
674 DBG("IO mapping for PHB %s\n", hose->dn->full_name);
675 DBG(" phys=0x%016lx, virt=0x%p (alloc=0x%p)\n",
676 hose->io_base_phys, hose->io_base_virt, hose->io_base_alloc);
677 DBG(" size=0x%016lx (alloc=0x%016lx)\n",
678 hose->pci_io_size, size_page);
680 /* Establish the mapping */
681 if (__ioremap_at(phys_page, area->addr, size_page,
682 _PAGE_NO_CACHE | _PAGE_GUARDED) == NULL)
685 /* Fixup hose IO resource */
686 io_virt_offset = (unsigned long)hose->io_base_virt - _IO_BASE;
687 hose->io_resource.start += io_virt_offset;
688 hose->io_resource.end += io_virt_offset;
690 DBG(" hose->io_resource=0x%016lx...0x%016lx\n",
691 hose->io_resource.start, hose->io_resource.end);
695 EXPORT_SYMBOL_GPL(pcibios_map_io_space);
697 static void __devinit fixup_resource(struct resource *res, struct pci_dev *dev)
699 struct pci_controller *hose = pci_bus_to_host(dev->bus);
700 unsigned long offset;
702 if (res->flags & IORESOURCE_IO) {
703 offset = (unsigned long)hose->io_base_virt - _IO_BASE;
704 res->start += offset;
706 } else if (res->flags & IORESOURCE_MEM) {
707 res->start += hose->pci_mem_offset;
708 res->end += hose->pci_mem_offset;
712 void __devinit pcibios_fixup_device_resources(struct pci_dev *dev,
715 /* Update device resources. */
718 DBG("%s: Fixup resources:\n", pci_name(dev));
719 for (i = 0; i < PCI_NUM_RESOURCES; i++) {
720 struct resource *res = &dev->resource[i];
724 DBG(" 0x%02x < %08lx:0x%016lx...0x%016lx\n",
725 i, res->flags, res->start, res->end);
727 fixup_resource(res, dev);
729 DBG(" > %08lx:0x%016lx...0x%016lx\n",
730 res->flags, res->start, res->end);
733 EXPORT_SYMBOL(pcibios_fixup_device_resources);
735 void __devinit pcibios_setup_new_device(struct pci_dev *dev)
737 struct dev_archdata *sd = &dev->dev.archdata;
739 sd->of_node = pci_device_to_OF_node(dev);
741 DBG("PCI device %s OF node: %s\n", pci_name(dev),
742 sd->of_node ? sd->of_node->full_name : "<none>");
744 sd->dma_ops = pci_dma_ops;
746 sd->numa_node = pcibus_to_node(dev->bus);
750 if (ppc_md.pci_dma_dev_setup)
751 ppc_md.pci_dma_dev_setup(dev);
753 EXPORT_SYMBOL(pcibios_setup_new_device);
755 static void __devinit do_bus_setup(struct pci_bus *bus)
759 if (ppc_md.pci_dma_bus_setup)
760 ppc_md.pci_dma_bus_setup(bus);
762 list_for_each_entry(dev, &bus->devices, bus_list)
763 pcibios_setup_new_device(dev);
765 /* Read default IRQs and fixup if necessary */
766 list_for_each_entry(dev, &bus->devices, bus_list) {
767 pci_read_irq_line(dev);
768 if (ppc_md.pci_irq_fixup)
769 ppc_md.pci_irq_fixup(dev);
773 void __devinit pcibios_fixup_bus(struct pci_bus *bus)
775 struct pci_dev *dev = bus->self;
776 struct device_node *np;
778 np = pci_bus_to_OF_node(bus);
780 DBG("pcibios_fixup_bus(%s)\n", np ? np->full_name : "<???>");
782 if (dev && pci_probe_only &&
783 (dev->class >> 8) == PCI_CLASS_BRIDGE_PCI) {
784 /* This is a subordinate bridge */
786 pci_read_bridge_bases(bus);
787 pcibios_fixup_device_resources(dev, bus);
795 list_for_each_entry(dev, &bus->devices, bus_list)
796 if ((dev->class >> 8) != PCI_CLASS_BRIDGE_PCI)
797 pcibios_fixup_device_resources(dev, bus);
799 EXPORT_SYMBOL(pcibios_fixup_bus);
801 unsigned long pci_address_to_pio(phys_addr_t address)
803 struct pci_controller *hose, *tmp;
805 list_for_each_entry_safe(hose, tmp, &hose_list, list_node) {
806 if (address >= hose->io_base_phys &&
807 address < (hose->io_base_phys + hose->pci_io_size)) {
809 (unsigned long)hose->io_base_virt - _IO_BASE;
810 return base + (address - hose->io_base_phys);
813 return (unsigned int)-1;
815 EXPORT_SYMBOL_GPL(pci_address_to_pio);
818 #define IOBASE_BRIDGE_NUMBER 0
819 #define IOBASE_MEMORY 1
821 #define IOBASE_ISA_IO 3
822 #define IOBASE_ISA_MEM 4
824 long sys_pciconfig_iobase(long which, unsigned long in_bus,
825 unsigned long in_devfn)
827 struct pci_controller* hose;
828 struct list_head *ln;
829 struct pci_bus *bus = NULL;
830 struct device_node *hose_node;
832 /* Argh ! Please forgive me for that hack, but that's the
833 * simplest way to get existing XFree to not lockup on some
834 * G5 machines... So when something asks for bus 0 io base
835 * (bus 0 is HT root), we return the AGP one instead.
837 if (machine_is_compatible("MacRISC4"))
841 /* That syscall isn't quite compatible with PCI domains, but it's
842 * used on pre-domains setup. We return the first match
845 for (ln = pci_root_buses.next; ln != &pci_root_buses; ln = ln->next) {
847 if (in_bus >= bus->number && in_bus <= bus->subordinate)
851 if (bus == NULL || bus->sysdata == NULL)
854 hose_node = (struct device_node *)bus->sysdata;
855 hose = PCI_DN(hose_node)->phb;
858 case IOBASE_BRIDGE_NUMBER:
859 return (long)hose->first_busno;
861 return (long)hose->pci_mem_offset;
863 return (long)hose->io_base_phys;
865 return (long)isa_io_base;
874 int pcibus_to_node(struct pci_bus *bus)
876 struct pci_controller *phb = pci_bus_to_host(bus);
879 EXPORT_SYMBOL(pcibus_to_node);