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>
34 #include <asm/firmware.h>
38 #define DBG(fmt...) printk(fmt)
43 unsigned long pci_probe_only = 1;
44 int pci_assign_all_buses = 0;
46 static void fixup_resource(struct resource *res, struct pci_dev *dev);
47 static void do_bus_setup(struct pci_bus *bus);
49 /* pci_io_base -- the base address from which io bars are offsets.
50 * This is the lowest I/O base address (so bar values are always positive),
51 * and it *must* be the start of ISA space if an ISA bus exists because
52 * ISA drivers use hard coded offsets. If no ISA bus exists nothing
53 * is mapped on the first 64K of IO space
55 unsigned long pci_io_base = ISA_IO_BASE;
56 EXPORT_SYMBOL(pci_io_base);
60 static struct dma_mapping_ops *pci_dma_ops;
62 void set_pci_dma_ops(struct dma_mapping_ops *dma_ops)
64 pci_dma_ops = dma_ops;
67 struct dma_mapping_ops *get_pci_dma_ops(void)
71 EXPORT_SYMBOL(get_pci_dma_ops);
73 static void fixup_broken_pcnet32(struct pci_dev* dev)
75 if ((dev->class>>8 == PCI_CLASS_NETWORK_ETHERNET)) {
76 dev->vendor = PCI_VENDOR_ID_AMD;
77 pci_write_config_word(dev, PCI_VENDOR_ID, PCI_VENDOR_ID_AMD);
80 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TRIDENT, PCI_ANY_ID, fixup_broken_pcnet32);
82 void pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region,
85 unsigned long offset = 0;
86 struct pci_controller *hose = pci_bus_to_host(dev->bus);
91 if (res->flags & IORESOURCE_IO)
92 offset = (unsigned long)hose->io_base_virt - _IO_BASE;
94 if (res->flags & IORESOURCE_MEM)
95 offset = hose->pci_mem_offset;
97 region->start = res->start - offset;
98 region->end = res->end - offset;
101 void pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res,
102 struct pci_bus_region *region)
104 unsigned long offset = 0;
105 struct pci_controller *hose = pci_bus_to_host(dev->bus);
110 if (res->flags & IORESOURCE_IO)
111 offset = (unsigned long)hose->io_base_virt - _IO_BASE;
113 if (res->flags & IORESOURCE_MEM)
114 offset = hose->pci_mem_offset;
116 res->start = region->start + offset;
117 res->end = region->end + offset;
120 #ifdef CONFIG_HOTPLUG
121 EXPORT_SYMBOL(pcibios_resource_to_bus);
122 EXPORT_SYMBOL(pcibios_bus_to_resource);
126 * We need to avoid collisions with `mirrored' VGA ports
127 * and other strange ISA hardware, so we always want the
128 * addresses to be allocated in the 0x000-0x0ff region
131 * Why? Because some silly external IO cards only decode
132 * the low 10 bits of the IO address. The 0x00-0xff region
133 * is reserved for motherboard devices that decode all 16
134 * bits, so it's ok to allocate at, say, 0x2800-0x28ff,
135 * but we want to try to avoid allocating at 0x2900-0x2bff
136 * which might have be mirrored at 0x0100-0x03ff..
138 void pcibios_align_resource(void *data, struct resource *res,
139 resource_size_t size, resource_size_t align)
141 struct pci_dev *dev = data;
142 struct pci_controller *hose = pci_bus_to_host(dev->bus);
143 resource_size_t start = res->start;
144 unsigned long alignto;
146 if (res->flags & IORESOURCE_IO) {
147 unsigned long offset = (unsigned long)hose->io_base_virt -
149 /* Make sure we start at our min on all hoses */
150 if (start - offset < PCIBIOS_MIN_IO)
151 start = PCIBIOS_MIN_IO + offset;
154 * Put everything into 0x00-0xff region modulo 0x400
157 start = (start + 0x3ff) & ~0x3ff;
159 } else if (res->flags & IORESOURCE_MEM) {
160 /* Make sure we start at our min on all hoses */
161 if (start - hose->pci_mem_offset < PCIBIOS_MIN_MEM)
162 start = PCIBIOS_MIN_MEM + hose->pci_mem_offset;
164 /* Align to multiple of size of minimum base. */
165 alignto = max(0x1000UL, align);
166 start = ALIGN(start, alignto);
172 void __devinit pcibios_claim_one_bus(struct pci_bus *b)
175 struct pci_bus *child_bus;
177 list_for_each_entry(dev, &b->devices, bus_list) {
180 for (i = 0; i < PCI_NUM_RESOURCES; i++) {
181 struct resource *r = &dev->resource[i];
183 if (r->parent || !r->start || !r->flags)
185 pci_claim_resource(dev, i);
189 list_for_each_entry(child_bus, &b->children, node)
190 pcibios_claim_one_bus(child_bus);
192 #ifdef CONFIG_HOTPLUG
193 EXPORT_SYMBOL_GPL(pcibios_claim_one_bus);
196 static void __init pcibios_claim_of_setup(void)
200 if (firmware_has_feature(FW_FEATURE_ISERIES))
203 list_for_each_entry(b, &pci_root_buses, node)
204 pcibios_claim_one_bus(b);
207 static u32 get_int_prop(struct device_node *np, const char *name, u32 def)
212 prop = of_get_property(np, name, &len);
213 if (prop && len >= 4)
218 static unsigned int pci_parse_of_flags(u32 addr0)
220 unsigned int flags = 0;
222 if (addr0 & 0x02000000) {
223 flags = IORESOURCE_MEM | PCI_BASE_ADDRESS_SPACE_MEMORY;
224 flags |= (addr0 >> 22) & PCI_BASE_ADDRESS_MEM_TYPE_64;
225 flags |= (addr0 >> 28) & PCI_BASE_ADDRESS_MEM_TYPE_1M;
226 if (addr0 & 0x40000000)
227 flags |= IORESOURCE_PREFETCH
228 | PCI_BASE_ADDRESS_MEM_PREFETCH;
229 } else if (addr0 & 0x01000000)
230 flags = IORESOURCE_IO | PCI_BASE_ADDRESS_SPACE_IO;
235 static void pci_parse_of_addrs(struct device_node *node, struct pci_dev *dev)
239 struct resource *res;
244 addrs = of_get_property(node, "assigned-addresses", &proplen);
247 DBG(" parse addresses (%d bytes) @ %p\n", proplen, addrs);
248 for (; proplen >= 20; proplen -= 20, addrs += 5) {
249 flags = pci_parse_of_flags(addrs[0]);
252 base = of_read_number(&addrs[1], 2);
253 size = of_read_number(&addrs[3], 2);
257 DBG(" base: %llx, size: %llx, i: %x\n",
258 (unsigned long long)base, (unsigned long long)size, i);
260 if (PCI_BASE_ADDRESS_0 <= i && i <= PCI_BASE_ADDRESS_5) {
261 res = &dev->resource[(i - PCI_BASE_ADDRESS_0) >> 2];
262 } else if (i == dev->rom_base_reg) {
263 res = &dev->resource[PCI_ROM_RESOURCE];
264 flags |= IORESOURCE_READONLY | IORESOURCE_CACHEABLE;
266 printk(KERN_ERR "PCI: bad cfg reg num 0x%x\n", i);
270 res->end = base + size - 1;
272 res->name = pci_name(dev);
273 fixup_resource(res, dev);
277 struct pci_dev *of_create_pci_dev(struct device_node *node,
278 struct pci_bus *bus, int devfn)
283 dev = alloc_pci_dev();
286 type = of_get_property(node, "device_type", NULL);
290 DBG(" create device, devfn: %x, type: %s\n", devfn, type);
294 dev->dev.parent = bus->bridge;
295 dev->dev.bus = &pci_bus_type;
297 dev->multifunction = 0; /* maybe a lie? */
299 dev->vendor = get_int_prop(node, "vendor-id", 0xffff);
300 dev->device = get_int_prop(node, "device-id", 0xffff);
301 dev->subsystem_vendor = get_int_prop(node, "subsystem-vendor-id", 0);
302 dev->subsystem_device = get_int_prop(node, "subsystem-id", 0);
304 dev->cfg_size = pci_cfg_space_size(dev);
306 sprintf(pci_name(dev), "%04x:%02x:%02x.%d", pci_domain_nr(bus),
307 dev->bus->number, PCI_SLOT(devfn), PCI_FUNC(devfn));
308 dev->class = get_int_prop(node, "class-code", 0);
309 dev->revision = get_int_prop(node, "revision-id", 0);
311 DBG(" class: 0x%x\n", dev->class);
312 DBG(" revision: 0x%x\n", dev->revision);
314 dev->current_state = 4; /* unknown power state */
315 dev->error_state = pci_channel_io_normal;
317 if (!strcmp(type, "pci") || !strcmp(type, "pciex")) {
318 /* a PCI-PCI bridge */
319 dev->hdr_type = PCI_HEADER_TYPE_BRIDGE;
320 dev->rom_base_reg = PCI_ROM_ADDRESS1;
321 } else if (!strcmp(type, "cardbus")) {
322 dev->hdr_type = PCI_HEADER_TYPE_CARDBUS;
324 dev->hdr_type = PCI_HEADER_TYPE_NORMAL;
325 dev->rom_base_reg = PCI_ROM_ADDRESS;
326 /* Maybe do a default OF mapping here */
330 pci_parse_of_addrs(node, dev);
332 DBG(" adding to system ...\n");
334 pci_device_add(dev, bus);
338 EXPORT_SYMBOL(of_create_pci_dev);
340 void __devinit of_scan_bus(struct device_node *node,
343 struct device_node *child = NULL;
348 DBG("of_scan_bus(%s) bus no %d... \n", node->full_name, bus->number);
350 while ((child = of_get_next_child(node, child)) != NULL) {
351 DBG(" * %s\n", child->full_name);
352 reg = of_get_property(child, "reg", ®len);
353 if (reg == NULL || reglen < 20)
355 devfn = (reg[0] >> 8) & 0xff;
357 /* create a new pci_dev for this device */
358 dev = of_create_pci_dev(child, bus, devfn);
361 DBG("dev header type: %x\n", dev->hdr_type);
363 if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE ||
364 dev->hdr_type == PCI_HEADER_TYPE_CARDBUS)
365 of_scan_pci_bridge(child, dev);
370 EXPORT_SYMBOL(of_scan_bus);
372 void __devinit of_scan_pci_bridge(struct device_node *node,
376 const u32 *busrange, *ranges;
378 struct resource *res;
382 DBG("of_scan_pci_bridge(%s)\n", node->full_name);
384 /* parse bus-range property */
385 busrange = of_get_property(node, "bus-range", &len);
386 if (busrange == NULL || len != 8) {
387 printk(KERN_DEBUG "Can't get bus-range for PCI-PCI bridge %s\n",
391 ranges = of_get_property(node, "ranges", &len);
392 if (ranges == NULL) {
393 printk(KERN_DEBUG "Can't get ranges for PCI-PCI bridge %s\n",
398 bus = pci_add_new_bus(dev->bus, dev, busrange[0]);
400 printk(KERN_ERR "Failed to create pci bus for %s\n",
405 bus->primary = dev->bus->number;
406 bus->subordinate = busrange[1];
410 /* parse ranges property */
411 /* PCI #address-cells == 3 and #size-cells == 2 always */
412 res = &dev->resource[PCI_BRIDGE_RESOURCES];
413 for (i = 0; i < PCI_NUM_RESOURCES - PCI_BRIDGE_RESOURCES; ++i) {
415 bus->resource[i] = res;
419 for (; len >= 32; len -= 32, ranges += 8) {
420 flags = pci_parse_of_flags(ranges[0]);
421 size = of_read_number(&ranges[6], 2);
422 if (flags == 0 || size == 0)
424 if (flags & IORESOURCE_IO) {
425 res = bus->resource[0];
427 printk(KERN_ERR "PCI: ignoring extra I/O range"
428 " for bridge %s\n", node->full_name);
432 if (i >= PCI_NUM_RESOURCES - PCI_BRIDGE_RESOURCES) {
433 printk(KERN_ERR "PCI: too many memory ranges"
434 " for bridge %s\n", node->full_name);
437 res = bus->resource[i];
440 res->start = of_read_number(&ranges[1], 2);
441 res->end = res->start + size - 1;
443 fixup_resource(res, dev);
445 sprintf(bus->name, "PCI Bus %04x:%02x", pci_domain_nr(bus),
447 DBG(" bus name: %s\n", bus->name);
449 mode = PCI_PROBE_NORMAL;
450 if (ppc_md.pci_probe_mode)
451 mode = ppc_md.pci_probe_mode(bus);
452 DBG(" probe mode: %d\n", mode);
454 if (mode == PCI_PROBE_DEVTREE)
455 of_scan_bus(node, bus);
456 else if (mode == PCI_PROBE_NORMAL)
457 pci_scan_child_bus(bus);
459 EXPORT_SYMBOL(of_scan_pci_bridge);
461 void __devinit scan_phb(struct pci_controller *hose)
464 struct device_node *node = hose->arch_data;
466 struct resource *res;
468 DBG("Scanning PHB %s\n", node ? node->full_name : "<NO NAME>");
470 bus = pci_create_bus(hose->parent, hose->first_busno, hose->ops, node);
472 printk(KERN_ERR "Failed to create bus for PCI domain %04x\n",
473 hose->global_number);
476 bus->secondary = hose->first_busno;
479 if (!firmware_has_feature(FW_FEATURE_ISERIES))
480 pcibios_map_io_space(bus);
482 bus->resource[0] = res = &hose->io_resource;
483 if (res->flags && request_resource(&ioport_resource, res)) {
484 printk(KERN_ERR "Failed to request PCI IO region "
485 "on PCI domain %04x\n", hose->global_number);
486 DBG("res->start = 0x%016lx, res->end = 0x%016lx\n",
487 res->start, res->end);
490 for (i = 0; i < 3; ++i) {
491 res = &hose->mem_resources[i];
492 bus->resource[i+1] = res;
493 if (res->flags && request_resource(&iomem_resource, res))
494 printk(KERN_ERR "Failed to request PCI memory region "
495 "on PCI domain %04x\n", hose->global_number);
498 mode = PCI_PROBE_NORMAL;
500 if (node && ppc_md.pci_probe_mode)
501 mode = ppc_md.pci_probe_mode(bus);
502 DBG(" probe mode: %d\n", mode);
503 if (mode == PCI_PROBE_DEVTREE) {
504 bus->subordinate = hose->last_busno;
505 of_scan_bus(node, bus);
508 if (mode == PCI_PROBE_NORMAL)
509 hose->last_busno = bus->subordinate = pci_scan_child_bus(bus);
512 static int __init pcibios_init(void)
514 struct pci_controller *hose, *tmp;
516 /* For now, override phys_mem_access_prot. If we need it,
517 * later, we may move that initialization to each ppc_md
519 ppc_md.phys_mem_access_prot = pci_phys_mem_access_prot;
521 if (firmware_has_feature(FW_FEATURE_ISERIES))
522 iSeries_pcibios_init();
524 printk(KERN_DEBUG "PCI: Probing PCI hardware\n");
526 /* Scan all of the recorded PCI controllers. */
527 list_for_each_entry_safe(hose, tmp, &hose_list, list_node) {
529 pci_bus_add_devices(hose->bus);
532 if (!firmware_has_feature(FW_FEATURE_ISERIES)) {
534 pcibios_claim_of_setup();
536 /* FIXME: `else' will be removed when
537 pci_assign_unassigned_resources() is able to work
538 correctly with [partially] allocated PCI tree. */
539 pci_assign_unassigned_resources();
542 /* Call machine dependent final fixup */
543 if (ppc_md.pcibios_fixup)
544 ppc_md.pcibios_fixup();
546 printk(KERN_DEBUG "PCI: Probing PCI hardware done\n");
551 subsys_initcall(pcibios_init);
553 int pcibios_enable_device(struct pci_dev *dev, int mask)
558 pci_read_config_word(dev, PCI_COMMAND, &cmd);
561 for (i = 0; i < PCI_NUM_RESOURCES; i++) {
562 struct resource *res = &dev->resource[i];
564 /* Only set up the requested stuff */
565 if (!(mask & (1<<i)))
568 if (res->flags & IORESOURCE_IO)
569 cmd |= PCI_COMMAND_IO;
570 if (res->flags & IORESOURCE_MEM)
571 cmd |= PCI_COMMAND_MEMORY;
575 printk(KERN_DEBUG "PCI: Enabling device: (%s), cmd %x\n",
577 /* Enable the appropriate bits in the PCI command register. */
578 pci_write_config_word(dev, PCI_COMMAND, cmd);
583 /* Decide whether to display the domain number in /proc */
584 int pci_proc_domain(struct pci_bus *bus)
586 if (firmware_has_feature(FW_FEATURE_ISERIES))
589 struct pci_controller *hose = pci_bus_to_host(bus);
594 void __devinit pci_process_bridge_OF_ranges(struct pci_controller *hose,
595 struct device_node *dev, int prim)
597 const unsigned int *ranges;
598 unsigned int pci_space;
602 struct resource *res;
603 int np, na = of_n_addr_cells(dev);
604 unsigned long pci_addr, cpu_phys_addr;
608 /* From "PCI Binding to 1275"
609 * The ranges property is laid out as an array of elements,
610 * each of which comprises:
611 * cells 0 - 2: a PCI address
612 * cells 3 or 3+4: a CPU physical address
613 * (size depending on dev->n_addr_cells)
614 * cells 4+5 or 5+6: the size of the range
616 ranges = of_get_property(dev, "ranges", &rlen);
619 hose->io_base_phys = 0;
620 while ((rlen -= np * sizeof(unsigned int)) >= 0) {
622 pci_space = ranges[0];
623 pci_addr = ((unsigned long)ranges[1] << 32) | ranges[2];
624 cpu_phys_addr = of_translate_address(dev, &ranges[3]);
625 size = ((unsigned long)ranges[na+3] << 32) | ranges[na+4];
630 /* Now consume following elements while they are contiguous */
631 while (rlen >= np * sizeof(unsigned int)) {
632 unsigned long addr, phys;
634 if (ranges[0] != pci_space)
636 addr = ((unsigned long)ranges[1] << 32) | ranges[2];
639 phys = (phys << 32) | ranges[4];
640 if (addr != pci_addr + size ||
641 phys != cpu_phys_addr + size)
644 size += ((unsigned long)ranges[na+3] << 32)
647 rlen -= np * sizeof(unsigned int);
650 switch ((pci_space >> 24) & 0x3) {
651 case 1: /* I/O space */
652 hose->io_base_phys = cpu_phys_addr - pci_addr;
653 /* handle from 0 to top of I/O window */
654 hose->pci_io_size = pci_addr + size;
656 res = &hose->io_resource;
657 res->flags = IORESOURCE_IO;
658 res->start = pci_addr;
659 DBG("phb%d: IO 0x%lx -> 0x%lx\n", hose->global_number,
660 res->start, res->start + size - 1);
662 case 2: /* memory space */
664 while (memno < 3 && hose->mem_resources[memno].flags)
668 hose->pci_mem_offset = cpu_phys_addr - pci_addr;
670 res = &hose->mem_resources[memno];
671 res->flags = IORESOURCE_MEM;
672 res->start = cpu_phys_addr;
673 DBG("phb%d: MEM 0x%lx -> 0x%lx\n", hose->global_number,
674 res->start, res->start + size - 1);
679 res->name = dev->full_name;
680 res->end = res->start + size - 1;
688 #ifdef CONFIG_HOTPLUG
690 int pcibios_unmap_io_space(struct pci_bus *bus)
692 struct pci_controller *hose;
694 WARN_ON(bus == NULL);
696 /* If this is not a PHB, we only flush the hash table over
697 * the area mapped by this bridge. We don't play with the PTE
698 * mappings since we might have to deal with sub-page alignemnts
699 * so flushing the hash table is the only sane way to make sure
700 * that no hash entries are covering that removed bridge area
701 * while still allowing other busses overlapping those pages
704 struct resource *res = bus->resource[0];
706 DBG("IO unmapping for PCI-PCI bridge %s\n",
707 pci_name(bus->self));
709 __flush_hash_table_range(&init_mm, res->start + _IO_BASE,
710 res->end - res->start + 1);
714 /* Get the host bridge */
715 hose = pci_bus_to_host(bus);
717 /* Check if we have IOs allocated */
718 if (hose->io_base_alloc == 0)
721 DBG("IO unmapping for PHB %s\n",
722 ((struct device_node *)hose->arch_data)->full_name);
723 DBG(" alloc=0x%p\n", hose->io_base_alloc);
725 /* This is a PHB, we fully unmap the IO area */
726 vunmap(hose->io_base_alloc);
730 EXPORT_SYMBOL_GPL(pcibios_unmap_io_space);
732 #endif /* CONFIG_HOTPLUG */
734 int __devinit pcibios_map_io_space(struct pci_bus *bus)
736 struct vm_struct *area;
737 unsigned long phys_page;
738 unsigned long size_page;
739 unsigned long io_virt_offset;
740 struct pci_controller *hose;
742 WARN_ON(bus == NULL);
744 /* If this not a PHB, nothing to do, page tables still exist and
745 * thus HPTEs will be faulted in when needed
748 DBG("IO mapping for PCI-PCI bridge %s\n",
749 pci_name(bus->self));
750 DBG(" virt=0x%016lx...0x%016lx\n",
751 bus->resource[0]->start + _IO_BASE,
752 bus->resource[0]->end + _IO_BASE);
756 /* Get the host bridge */
757 hose = pci_bus_to_host(bus);
758 phys_page = _ALIGN_DOWN(hose->io_base_phys, PAGE_SIZE);
759 size_page = _ALIGN_UP(hose->pci_io_size, PAGE_SIZE);
761 /* Make sure IO area address is clear */
762 hose->io_base_alloc = NULL;
764 /* If there's no IO to map on that bus, get away too */
765 if (hose->pci_io_size == 0 || hose->io_base_phys == 0)
768 /* Let's allocate some IO space for that guy. We don't pass
769 * VM_IOREMAP because we don't care about alignment tricks that
770 * the core does in that case. Maybe we should due to stupid card
771 * with incomplete address decoding but I'd rather not deal with
772 * those outside of the reserved 64K legacy region.
774 area = __get_vm_area(size_page, 0, PHB_IO_BASE, PHB_IO_END);
777 hose->io_base_alloc = area->addr;
778 hose->io_base_virt = (void __iomem *)(area->addr +
779 hose->io_base_phys - phys_page);
781 DBG("IO mapping for PHB %s\n",
782 ((struct device_node *)hose->arch_data)->full_name);
783 DBG(" phys=0x%016lx, virt=0x%p (alloc=0x%p)\n",
784 hose->io_base_phys, hose->io_base_virt, hose->io_base_alloc);
785 DBG(" size=0x%016lx (alloc=0x%016lx)\n",
786 hose->pci_io_size, size_page);
788 /* Establish the mapping */
789 if (__ioremap_at(phys_page, area->addr, size_page,
790 _PAGE_NO_CACHE | _PAGE_GUARDED) == NULL)
793 /* Fixup hose IO resource */
794 io_virt_offset = (unsigned long)hose->io_base_virt - _IO_BASE;
795 hose->io_resource.start += io_virt_offset;
796 hose->io_resource.end += io_virt_offset;
798 DBG(" hose->io_resource=0x%016lx...0x%016lx\n",
799 hose->io_resource.start, hose->io_resource.end);
803 EXPORT_SYMBOL_GPL(pcibios_map_io_space);
805 static void __devinit fixup_resource(struct resource *res, struct pci_dev *dev)
807 struct pci_controller *hose = pci_bus_to_host(dev->bus);
808 unsigned long offset;
810 if (res->flags & IORESOURCE_IO) {
811 offset = (unsigned long)hose->io_base_virt - _IO_BASE;
812 res->start += offset;
814 } else if (res->flags & IORESOURCE_MEM) {
815 res->start += hose->pci_mem_offset;
816 res->end += hose->pci_mem_offset;
820 void __devinit pcibios_fixup_device_resources(struct pci_dev *dev,
823 /* Update device resources. */
826 DBG("%s: Fixup resources:\n", pci_name(dev));
827 for (i = 0; i < PCI_NUM_RESOURCES; i++) {
828 struct resource *res = &dev->resource[i];
832 DBG(" 0x%02x < %08lx:0x%016lx...0x%016lx\n",
833 i, res->flags, res->start, res->end);
835 fixup_resource(res, dev);
837 DBG(" > %08lx:0x%016lx...0x%016lx\n",
838 res->flags, res->start, res->end);
841 EXPORT_SYMBOL(pcibios_fixup_device_resources);
843 void __devinit pcibios_setup_new_device(struct pci_dev *dev)
845 struct dev_archdata *sd = &dev->dev.archdata;
847 sd->of_node = pci_device_to_OF_node(dev);
849 DBG("PCI device %s OF node: %s\n", pci_name(dev),
850 sd->of_node ? sd->of_node->full_name : "<none>");
852 sd->dma_ops = pci_dma_ops;
854 sd->numa_node = pcibus_to_node(dev->bus);
858 if (ppc_md.pci_dma_dev_setup)
859 ppc_md.pci_dma_dev_setup(dev);
861 EXPORT_SYMBOL(pcibios_setup_new_device);
863 static void __devinit do_bus_setup(struct pci_bus *bus)
867 if (ppc_md.pci_dma_bus_setup)
868 ppc_md.pci_dma_bus_setup(bus);
870 list_for_each_entry(dev, &bus->devices, bus_list)
871 pcibios_setup_new_device(dev);
873 /* Read default IRQs and fixup if necessary */
874 list_for_each_entry(dev, &bus->devices, bus_list) {
875 pci_read_irq_line(dev);
876 if (ppc_md.pci_irq_fixup)
877 ppc_md.pci_irq_fixup(dev);
881 void __devinit pcibios_fixup_bus(struct pci_bus *bus)
883 struct pci_dev *dev = bus->self;
884 struct device_node *np;
886 np = pci_bus_to_OF_node(bus);
888 DBG("pcibios_fixup_bus(%s)\n", np ? np->full_name : "<???>");
890 if (dev && pci_probe_only &&
891 (dev->class >> 8) == PCI_CLASS_BRIDGE_PCI) {
892 /* This is a subordinate bridge */
894 pci_read_bridge_bases(bus);
895 pcibios_fixup_device_resources(dev, bus);
903 list_for_each_entry(dev, &bus->devices, bus_list)
904 if ((dev->class >> 8) != PCI_CLASS_BRIDGE_PCI)
905 pcibios_fixup_device_resources(dev, bus);
907 EXPORT_SYMBOL(pcibios_fixup_bus);
909 unsigned long pci_address_to_pio(phys_addr_t address)
911 struct pci_controller *hose, *tmp;
913 list_for_each_entry_safe(hose, tmp, &hose_list, list_node) {
914 if (address >= hose->io_base_phys &&
915 address < (hose->io_base_phys + hose->pci_io_size)) {
917 (unsigned long)hose->io_base_virt - _IO_BASE;
918 return base + (address - hose->io_base_phys);
921 return (unsigned int)-1;
923 EXPORT_SYMBOL_GPL(pci_address_to_pio);
926 #define IOBASE_BRIDGE_NUMBER 0
927 #define IOBASE_MEMORY 1
929 #define IOBASE_ISA_IO 3
930 #define IOBASE_ISA_MEM 4
932 long sys_pciconfig_iobase(long which, unsigned long in_bus,
933 unsigned long in_devfn)
935 struct pci_controller* hose;
936 struct list_head *ln;
937 struct pci_bus *bus = NULL;
938 struct device_node *hose_node;
940 /* Argh ! Please forgive me for that hack, but that's the
941 * simplest way to get existing XFree to not lockup on some
942 * G5 machines... So when something asks for bus 0 io base
943 * (bus 0 is HT root), we return the AGP one instead.
945 if (machine_is_compatible("MacRISC4"))
949 /* That syscall isn't quite compatible with PCI domains, but it's
950 * used on pre-domains setup. We return the first match
953 for (ln = pci_root_buses.next; ln != &pci_root_buses; ln = ln->next) {
955 if (in_bus >= bus->number && in_bus <= bus->subordinate)
959 if (bus == NULL || bus->sysdata == NULL)
962 hose_node = (struct device_node *)bus->sysdata;
963 hose = PCI_DN(hose_node)->phb;
966 case IOBASE_BRIDGE_NUMBER:
967 return (long)hose->first_busno;
969 return (long)hose->pci_mem_offset;
971 return (long)hose->io_base_phys;
973 return (long)isa_io_base;
982 int pcibus_to_node(struct pci_bus *bus)
984 struct pci_controller *phb = pci_bus_to_host(bus);
987 EXPORT_SYMBOL(pcibus_to_node);