URL
https://opencores.org/ocsvn/or1k_soc_on_altera_embedded_dev_kit/or1k_soc_on_altera_embedded_dev_kit/trunk
Subversion Repositories or1k_soc_on_altera_embedded_dev_kit
[/] [or1k_soc_on_altera_embedded_dev_kit/] [trunk/] [linux-2.6/] [linux-2.6.24/] [arch/] [powerpc/] [kernel/] [pci_64.c] - Rev 3
Compare with Previous | Blame | View Log
/* * Port for PPC64 David Engebretsen, IBM Corp. * Contains common pci routines for ppc64 platform, pSeries and iSeries brands. * * Copyright (C) 2003 Anton Blanchard <anton@au.ibm.com>, IBM * Rework, based on alpha PCI code. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. */ #undef DEBUG #include <linux/kernel.h> #include <linux/pci.h> #include <linux/string.h> #include <linux/init.h> #include <linux/bootmem.h> #include <linux/mm.h> #include <linux/list.h> #include <linux/syscalls.h> #include <linux/irq.h> #include <linux/vmalloc.h> #include <asm/processor.h> #include <asm/io.h> #include <asm/prom.h> #include <asm/pci-bridge.h> #include <asm/byteorder.h> #include <asm/machdep.h> #include <asm/ppc-pci.h> #include <asm/firmware.h> #ifdef DEBUG #include <asm/udbg.h> #define DBG(fmt...) printk(fmt) #else #define DBG(fmt...) #endif unsigned long pci_probe_only = 1; int pci_assign_all_buses = 0; static void fixup_resource(struct resource *res, struct pci_dev *dev); static void do_bus_setup(struct pci_bus *bus); /* pci_io_base -- the base address from which io bars are offsets. * This is the lowest I/O base address (so bar values are always positive), * and it *must* be the start of ISA space if an ISA bus exists because * ISA drivers use hard coded offsets. If no ISA bus exists nothing * is mapped on the first 64K of IO space */ unsigned long pci_io_base = ISA_IO_BASE; EXPORT_SYMBOL(pci_io_base); LIST_HEAD(hose_list); static struct dma_mapping_ops *pci_dma_ops; void set_pci_dma_ops(struct dma_mapping_ops *dma_ops) { pci_dma_ops = dma_ops; } struct dma_mapping_ops *get_pci_dma_ops(void) { return pci_dma_ops; } EXPORT_SYMBOL(get_pci_dma_ops); static void fixup_broken_pcnet32(struct pci_dev* dev) { if ((dev->class>>8 == PCI_CLASS_NETWORK_ETHERNET)) { dev->vendor = PCI_VENDOR_ID_AMD; pci_write_config_word(dev, PCI_VENDOR_ID, PCI_VENDOR_ID_AMD); } } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TRIDENT, PCI_ANY_ID, fixup_broken_pcnet32); void pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region, struct resource *res) { unsigned long offset = 0; struct pci_controller *hose = pci_bus_to_host(dev->bus); if (!hose) return; if (res->flags & IORESOURCE_IO) offset = (unsigned long)hose->io_base_virt - _IO_BASE; if (res->flags & IORESOURCE_MEM) offset = hose->pci_mem_offset; region->start = res->start - offset; region->end = res->end - offset; } void pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res, struct pci_bus_region *region) { unsigned long offset = 0; struct pci_controller *hose = pci_bus_to_host(dev->bus); if (!hose) return; if (res->flags & IORESOURCE_IO) offset = (unsigned long)hose->io_base_virt - _IO_BASE; if (res->flags & IORESOURCE_MEM) offset = hose->pci_mem_offset; res->start = region->start + offset; res->end = region->end + offset; } #ifdef CONFIG_HOTPLUG EXPORT_SYMBOL(pcibios_resource_to_bus); EXPORT_SYMBOL(pcibios_bus_to_resource); #endif /* * We need to avoid collisions with `mirrored' VGA ports * and other strange ISA hardware, so we always want the * addresses to be allocated in the 0x000-0x0ff region * modulo 0x400. * * Why? Because some silly external IO cards only decode * the low 10 bits of the IO address. The 0x00-0xff region * is reserved for motherboard devices that decode all 16 * bits, so it's ok to allocate at, say, 0x2800-0x28ff, * but we want to try to avoid allocating at 0x2900-0x2bff * which might have be mirrored at 0x0100-0x03ff.. */ void pcibios_align_resource(void *data, struct resource *res, resource_size_t size, resource_size_t align) { struct pci_dev *dev = data; struct pci_controller *hose = pci_bus_to_host(dev->bus); resource_size_t start = res->start; unsigned long alignto; if (res->flags & IORESOURCE_IO) { unsigned long offset = (unsigned long)hose->io_base_virt - _IO_BASE; /* Make sure we start at our min on all hoses */ if (start - offset < PCIBIOS_MIN_IO) start = PCIBIOS_MIN_IO + offset; /* * Put everything into 0x00-0xff region modulo 0x400 */ if (start & 0x300) start = (start + 0x3ff) & ~0x3ff; } else if (res->flags & IORESOURCE_MEM) { /* Make sure we start at our min on all hoses */ if (start - hose->pci_mem_offset < PCIBIOS_MIN_MEM) start = PCIBIOS_MIN_MEM + hose->pci_mem_offset; /* Align to multiple of size of minimum base. */ alignto = max(0x1000UL, align); start = ALIGN(start, alignto); } res->start = start; } void __devinit pcibios_claim_one_bus(struct pci_bus *b) { struct pci_dev *dev; struct pci_bus *child_bus; list_for_each_entry(dev, &b->devices, bus_list) { int i; for (i = 0; i < PCI_NUM_RESOURCES; i++) { struct resource *r = &dev->resource[i]; if (r->parent || !r->start || !r->flags) continue; pci_claim_resource(dev, i); } } list_for_each_entry(child_bus, &b->children, node) pcibios_claim_one_bus(child_bus); } #ifdef CONFIG_HOTPLUG EXPORT_SYMBOL_GPL(pcibios_claim_one_bus); #endif static void __init pcibios_claim_of_setup(void) { struct pci_bus *b; if (firmware_has_feature(FW_FEATURE_ISERIES)) return; list_for_each_entry(b, &pci_root_buses, node) pcibios_claim_one_bus(b); } static u32 get_int_prop(struct device_node *np, const char *name, u32 def) { const u32 *prop; int len; prop = of_get_property(np, name, &len); if (prop && len >= 4) return *prop; return def; } static unsigned int pci_parse_of_flags(u32 addr0) { unsigned int flags = 0; if (addr0 & 0x02000000) { flags = IORESOURCE_MEM | PCI_BASE_ADDRESS_SPACE_MEMORY; flags |= (addr0 >> 22) & PCI_BASE_ADDRESS_MEM_TYPE_64; flags |= (addr0 >> 28) & PCI_BASE_ADDRESS_MEM_TYPE_1M; if (addr0 & 0x40000000) flags |= IORESOURCE_PREFETCH | PCI_BASE_ADDRESS_MEM_PREFETCH; } else if (addr0 & 0x01000000) flags = IORESOURCE_IO | PCI_BASE_ADDRESS_SPACE_IO; return flags; } static void pci_parse_of_addrs(struct device_node *node, struct pci_dev *dev) { u64 base, size; unsigned int flags; struct resource *res; const u32 *addrs; u32 i; int proplen; addrs = of_get_property(node, "assigned-addresses", &proplen); if (!addrs) return; DBG(" parse addresses (%d bytes) @ %p\n", proplen, addrs); for (; proplen >= 20; proplen -= 20, addrs += 5) { flags = pci_parse_of_flags(addrs[0]); if (!flags) continue; base = of_read_number(&addrs[1], 2); size = of_read_number(&addrs[3], 2); if (!size) continue; i = addrs[0] & 0xff; DBG(" base: %llx, size: %llx, i: %x\n", (unsigned long long)base, (unsigned long long)size, i); if (PCI_BASE_ADDRESS_0 <= i && i <= PCI_BASE_ADDRESS_5) { res = &dev->resource[(i - PCI_BASE_ADDRESS_0) >> 2]; } else if (i == dev->rom_base_reg) { res = &dev->resource[PCI_ROM_RESOURCE]; flags |= IORESOURCE_READONLY | IORESOURCE_CACHEABLE; } else { printk(KERN_ERR "PCI: bad cfg reg num 0x%x\n", i); continue; } res->start = base; res->end = base + size - 1; res->flags = flags; res->name = pci_name(dev); fixup_resource(res, dev); } } struct pci_dev *of_create_pci_dev(struct device_node *node, struct pci_bus *bus, int devfn) { struct pci_dev *dev; const char *type; dev = alloc_pci_dev(); if (!dev) return NULL; type = of_get_property(node, "device_type", NULL); if (type == NULL) type = ""; DBG(" create device, devfn: %x, type: %s\n", devfn, type); dev->bus = bus; dev->sysdata = node; dev->dev.parent = bus->bridge; dev->dev.bus = &pci_bus_type; dev->devfn = devfn; dev->multifunction = 0; /* maybe a lie? */ dev->vendor = get_int_prop(node, "vendor-id", 0xffff); dev->device = get_int_prop(node, "device-id", 0xffff); dev->subsystem_vendor = get_int_prop(node, "subsystem-vendor-id", 0); dev->subsystem_device = get_int_prop(node, "subsystem-id", 0); dev->cfg_size = pci_cfg_space_size(dev); sprintf(pci_name(dev), "%04x:%02x:%02x.%d", pci_domain_nr(bus), dev->bus->number, PCI_SLOT(devfn), PCI_FUNC(devfn)); dev->class = get_int_prop(node, "class-code", 0); dev->revision = get_int_prop(node, "revision-id", 0); DBG(" class: 0x%x\n", dev->class); DBG(" revision: 0x%x\n", dev->revision); dev->current_state = 4; /* unknown power state */ dev->error_state = pci_channel_io_normal; dev->dma_mask = 0xffffffff; if (!strcmp(type, "pci") || !strcmp(type, "pciex")) { /* a PCI-PCI bridge */ dev->hdr_type = PCI_HEADER_TYPE_BRIDGE; dev->rom_base_reg = PCI_ROM_ADDRESS1; } else if (!strcmp(type, "cardbus")) { dev->hdr_type = PCI_HEADER_TYPE_CARDBUS; } else { dev->hdr_type = PCI_HEADER_TYPE_NORMAL; dev->rom_base_reg = PCI_ROM_ADDRESS; /* Maybe do a default OF mapping here */ dev->irq = NO_IRQ; } pci_parse_of_addrs(node, dev); DBG(" adding to system ...\n"); pci_device_add(dev, bus); return dev; } EXPORT_SYMBOL(of_create_pci_dev); void __devinit of_scan_bus(struct device_node *node, struct pci_bus *bus) { struct device_node *child = NULL; const u32 *reg; int reglen, devfn; struct pci_dev *dev; DBG("of_scan_bus(%s) bus no %d... \n", node->full_name, bus->number); while ((child = of_get_next_child(node, child)) != NULL) { DBG(" * %s\n", child->full_name); reg = of_get_property(child, "reg", ®len); if (reg == NULL || reglen < 20) continue; devfn = (reg[0] >> 8) & 0xff; /* create a new pci_dev for this device */ dev = of_create_pci_dev(child, bus, devfn); if (!dev) continue; DBG("dev header type: %x\n", dev->hdr_type); if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE || dev->hdr_type == PCI_HEADER_TYPE_CARDBUS) of_scan_pci_bridge(child, dev); } do_bus_setup(bus); } EXPORT_SYMBOL(of_scan_bus); void __devinit of_scan_pci_bridge(struct device_node *node, struct pci_dev *dev) { struct pci_bus *bus; const u32 *busrange, *ranges; int len, i, mode; struct resource *res; unsigned int flags; u64 size; DBG("of_scan_pci_bridge(%s)\n", node->full_name); /* parse bus-range property */ busrange = of_get_property(node, "bus-range", &len); if (busrange == NULL || len != 8) { printk(KERN_DEBUG "Can't get bus-range for PCI-PCI bridge %s\n", node->full_name); return; } ranges = of_get_property(node, "ranges", &len); if (ranges == NULL) { printk(KERN_DEBUG "Can't get ranges for PCI-PCI bridge %s\n", node->full_name); return; } bus = pci_add_new_bus(dev->bus, dev, busrange[0]); if (!bus) { printk(KERN_ERR "Failed to create pci bus for %s\n", node->full_name); return; } bus->primary = dev->bus->number; bus->subordinate = busrange[1]; bus->bridge_ctl = 0; bus->sysdata = node; /* parse ranges property */ /* PCI #address-cells == 3 and #size-cells == 2 always */ res = &dev->resource[PCI_BRIDGE_RESOURCES]; for (i = 0; i < PCI_NUM_RESOURCES - PCI_BRIDGE_RESOURCES; ++i) { res->flags = 0; bus->resource[i] = res; ++res; } i = 1; for (; len >= 32; len -= 32, ranges += 8) { flags = pci_parse_of_flags(ranges[0]); size = of_read_number(&ranges[6], 2); if (flags == 0 || size == 0) continue; if (flags & IORESOURCE_IO) { res = bus->resource[0]; if (res->flags) { printk(KERN_ERR "PCI: ignoring extra I/O range" " for bridge %s\n", node->full_name); continue; } } else { if (i >= PCI_NUM_RESOURCES - PCI_BRIDGE_RESOURCES) { printk(KERN_ERR "PCI: too many memory ranges" " for bridge %s\n", node->full_name); continue; } res = bus->resource[i]; ++i; } res->start = of_read_number(&ranges[1], 2); res->end = res->start + size - 1; res->flags = flags; fixup_resource(res, dev); } sprintf(bus->name, "PCI Bus %04x:%02x", pci_domain_nr(bus), bus->number); DBG(" bus name: %s\n", bus->name); mode = PCI_PROBE_NORMAL; if (ppc_md.pci_probe_mode) mode = ppc_md.pci_probe_mode(bus); DBG(" probe mode: %d\n", mode); if (mode == PCI_PROBE_DEVTREE) of_scan_bus(node, bus); else if (mode == PCI_PROBE_NORMAL) pci_scan_child_bus(bus); } EXPORT_SYMBOL(of_scan_pci_bridge); void __devinit scan_phb(struct pci_controller *hose) { struct pci_bus *bus; struct device_node *node = hose->arch_data; int i, mode; struct resource *res; DBG("Scanning PHB %s\n", node ? node->full_name : "<NO NAME>"); bus = pci_create_bus(hose->parent, hose->first_busno, hose->ops, node); if (bus == NULL) { printk(KERN_ERR "Failed to create bus for PCI domain %04x\n", hose->global_number); return; } bus->secondary = hose->first_busno; hose->bus = bus; if (!firmware_has_feature(FW_FEATURE_ISERIES)) pcibios_map_io_space(bus); bus->resource[0] = res = &hose->io_resource; if (res->flags && request_resource(&ioport_resource, res)) { printk(KERN_ERR "Failed to request PCI IO region " "on PCI domain %04x\n", hose->global_number); DBG("res->start = 0x%016lx, res->end = 0x%016lx\n", res->start, res->end); } for (i = 0; i < 3; ++i) { res = &hose->mem_resources[i]; bus->resource[i+1] = res; if (res->flags && request_resource(&iomem_resource, res)) printk(KERN_ERR "Failed to request PCI memory region " "on PCI domain %04x\n", hose->global_number); } mode = PCI_PROBE_NORMAL; if (node && ppc_md.pci_probe_mode) mode = ppc_md.pci_probe_mode(bus); DBG(" probe mode: %d\n", mode); if (mode == PCI_PROBE_DEVTREE) { bus->subordinate = hose->last_busno; of_scan_bus(node, bus); } if (mode == PCI_PROBE_NORMAL) hose->last_busno = bus->subordinate = pci_scan_child_bus(bus); } static int __init pcibios_init(void) { struct pci_controller *hose, *tmp; /* For now, override phys_mem_access_prot. If we need it, * later, we may move that initialization to each ppc_md */ ppc_md.phys_mem_access_prot = pci_phys_mem_access_prot; if (firmware_has_feature(FW_FEATURE_ISERIES)) iSeries_pcibios_init(); printk(KERN_DEBUG "PCI: Probing PCI hardware\n"); /* Scan all of the recorded PCI controllers. */ list_for_each_entry_safe(hose, tmp, &hose_list, list_node) { scan_phb(hose); pci_bus_add_devices(hose->bus); } if (!firmware_has_feature(FW_FEATURE_ISERIES)) { if (pci_probe_only) pcibios_claim_of_setup(); else /* FIXME: `else' will be removed when pci_assign_unassigned_resources() is able to work correctly with [partially] allocated PCI tree. */ pci_assign_unassigned_resources(); } /* Call machine dependent final fixup */ if (ppc_md.pcibios_fixup) ppc_md.pcibios_fixup(); printk(KERN_DEBUG "PCI: Probing PCI hardware done\n"); return 0; } subsys_initcall(pcibios_init); int pcibios_enable_device(struct pci_dev *dev, int mask) { u16 cmd, oldcmd; int i; pci_read_config_word(dev, PCI_COMMAND, &cmd); oldcmd = cmd; for (i = 0; i < PCI_NUM_RESOURCES; i++) { struct resource *res = &dev->resource[i]; /* Only set up the requested stuff */ if (!(mask & (1<<i))) continue; if (res->flags & IORESOURCE_IO) cmd |= PCI_COMMAND_IO; if (res->flags & IORESOURCE_MEM) cmd |= PCI_COMMAND_MEMORY; } if (cmd != oldcmd) { printk(KERN_DEBUG "PCI: Enabling device: (%s), cmd %x\n", pci_name(dev), cmd); /* Enable the appropriate bits in the PCI command register. */ pci_write_config_word(dev, PCI_COMMAND, cmd); } return 0; } /* Decide whether to display the domain number in /proc */ int pci_proc_domain(struct pci_bus *bus) { if (firmware_has_feature(FW_FEATURE_ISERIES)) return 0; else { struct pci_controller *hose = pci_bus_to_host(bus); return hose->buid != 0; } } void __devinit pci_process_bridge_OF_ranges(struct pci_controller *hose, struct device_node *dev, int prim) { const unsigned int *ranges; unsigned int pci_space; unsigned long size; int rlen = 0; int memno = 0; struct resource *res; int np, na = of_n_addr_cells(dev); unsigned long pci_addr, cpu_phys_addr; np = na + 5; /* From "PCI Binding to 1275" * The ranges property is laid out as an array of elements, * each of which comprises: * cells 0 - 2: a PCI address * cells 3 or 3+4: a CPU physical address * (size depending on dev->n_addr_cells) * cells 4+5 or 5+6: the size of the range */ ranges = of_get_property(dev, "ranges", &rlen); if (ranges == NULL) return; hose->io_base_phys = 0; while ((rlen -= np * sizeof(unsigned int)) >= 0) { res = NULL; pci_space = ranges[0]; pci_addr = ((unsigned long)ranges[1] << 32) | ranges[2]; cpu_phys_addr = of_translate_address(dev, &ranges[3]); size = ((unsigned long)ranges[na+3] << 32) | ranges[na+4]; ranges += np; if (size == 0) continue; /* Now consume following elements while they are contiguous */ while (rlen >= np * sizeof(unsigned int)) { unsigned long addr, phys; if (ranges[0] != pci_space) break; addr = ((unsigned long)ranges[1] << 32) | ranges[2]; phys = ranges[3]; if (na >= 2) phys = (phys << 32) | ranges[4]; if (addr != pci_addr + size || phys != cpu_phys_addr + size) break; size += ((unsigned long)ranges[na+3] << 32) | ranges[na+4]; ranges += np; rlen -= np * sizeof(unsigned int); } switch ((pci_space >> 24) & 0x3) { case 1: /* I/O space */ hose->io_base_phys = cpu_phys_addr - pci_addr; /* handle from 0 to top of I/O window */ hose->pci_io_size = pci_addr + size; res = &hose->io_resource; res->flags = IORESOURCE_IO; res->start = pci_addr; DBG("phb%d: IO 0x%lx -> 0x%lx\n", hose->global_number, res->start, res->start + size - 1); break; case 2: /* memory space */ memno = 0; while (memno < 3 && hose->mem_resources[memno].flags) ++memno; if (memno == 0) hose->pci_mem_offset = cpu_phys_addr - pci_addr; if (memno < 3) { res = &hose->mem_resources[memno]; res->flags = IORESOURCE_MEM; res->start = cpu_phys_addr; DBG("phb%d: MEM 0x%lx -> 0x%lx\n", hose->global_number, res->start, res->start + size - 1); } break; } if (res != NULL) { res->name = dev->full_name; res->end = res->start + size - 1; res->parent = NULL; res->sibling = NULL; res->child = NULL; } } } #ifdef CONFIG_HOTPLUG int pcibios_unmap_io_space(struct pci_bus *bus) { struct pci_controller *hose; WARN_ON(bus == NULL); /* If this is not a PHB, we only flush the hash table over * the area mapped by this bridge. We don't play with the PTE * mappings since we might have to deal with sub-page alignemnts * so flushing the hash table is the only sane way to make sure * that no hash entries are covering that removed bridge area * while still allowing other busses overlapping those pages */ if (bus->self) { struct resource *res = bus->resource[0]; DBG("IO unmapping for PCI-PCI bridge %s\n", pci_name(bus->self)); __flush_hash_table_range(&init_mm, res->start + _IO_BASE, res->end - res->start + 1); return 0; } /* Get the host bridge */ hose = pci_bus_to_host(bus); /* Check if we have IOs allocated */ if (hose->io_base_alloc == 0) return 0; DBG("IO unmapping for PHB %s\n", ((struct device_node *)hose->arch_data)->full_name); DBG(" alloc=0x%p\n", hose->io_base_alloc); /* This is a PHB, we fully unmap the IO area */ vunmap(hose->io_base_alloc); return 0; } EXPORT_SYMBOL_GPL(pcibios_unmap_io_space); #endif /* CONFIG_HOTPLUG */ int __devinit pcibios_map_io_space(struct pci_bus *bus) { struct vm_struct *area; unsigned long phys_page; unsigned long size_page; unsigned long io_virt_offset; struct pci_controller *hose; WARN_ON(bus == NULL); /* If this not a PHB, nothing to do, page tables still exist and * thus HPTEs will be faulted in when needed */ if (bus->self) { DBG("IO mapping for PCI-PCI bridge %s\n", pci_name(bus->self)); DBG(" virt=0x%016lx...0x%016lx\n", bus->resource[0]->start + _IO_BASE, bus->resource[0]->end + _IO_BASE); return 0; } /* Get the host bridge */ hose = pci_bus_to_host(bus); phys_page = _ALIGN_DOWN(hose->io_base_phys, PAGE_SIZE); size_page = _ALIGN_UP(hose->pci_io_size, PAGE_SIZE); /* Make sure IO area address is clear */ hose->io_base_alloc = NULL; /* If there's no IO to map on that bus, get away too */ if (hose->pci_io_size == 0 || hose->io_base_phys == 0) return 0; /* Let's allocate some IO space for that guy. We don't pass * VM_IOREMAP because we don't care about alignment tricks that * the core does in that case. Maybe we should due to stupid card * with incomplete address decoding but I'd rather not deal with * those outside of the reserved 64K legacy region. */ area = __get_vm_area(size_page, 0, PHB_IO_BASE, PHB_IO_END); if (area == NULL) return -ENOMEM; hose->io_base_alloc = area->addr; hose->io_base_virt = (void __iomem *)(area->addr + hose->io_base_phys - phys_page); DBG("IO mapping for PHB %s\n", ((struct device_node *)hose->arch_data)->full_name); DBG(" phys=0x%016lx, virt=0x%p (alloc=0x%p)\n", hose->io_base_phys, hose->io_base_virt, hose->io_base_alloc); DBG(" size=0x%016lx (alloc=0x%016lx)\n", hose->pci_io_size, size_page); /* Establish the mapping */ if (__ioremap_at(phys_page, area->addr, size_page, _PAGE_NO_CACHE | _PAGE_GUARDED) == NULL) return -ENOMEM; /* Fixup hose IO resource */ io_virt_offset = (unsigned long)hose->io_base_virt - _IO_BASE; hose->io_resource.start += io_virt_offset; hose->io_resource.end += io_virt_offset; DBG(" hose->io_resource=0x%016lx...0x%016lx\n", hose->io_resource.start, hose->io_resource.end); return 0; } EXPORT_SYMBOL_GPL(pcibios_map_io_space); static void __devinit fixup_resource(struct resource *res, struct pci_dev *dev) { struct pci_controller *hose = pci_bus_to_host(dev->bus); unsigned long offset; if (res->flags & IORESOURCE_IO) { offset = (unsigned long)hose->io_base_virt - _IO_BASE; res->start += offset; res->end += offset; } else if (res->flags & IORESOURCE_MEM) { res->start += hose->pci_mem_offset; res->end += hose->pci_mem_offset; } } void __devinit pcibios_fixup_device_resources(struct pci_dev *dev, struct pci_bus *bus) { /* Update device resources. */ int i; DBG("%s: Fixup resources:\n", pci_name(dev)); for (i = 0; i < PCI_NUM_RESOURCES; i++) { struct resource *res = &dev->resource[i]; if (!res->flags) continue; DBG(" 0x%02x < %08lx:0x%016lx...0x%016lx\n", i, res->flags, res->start, res->end); fixup_resource(res, dev); DBG(" > %08lx:0x%016lx...0x%016lx\n", res->flags, res->start, res->end); } } EXPORT_SYMBOL(pcibios_fixup_device_resources); void __devinit pcibios_setup_new_device(struct pci_dev *dev) { struct dev_archdata *sd = &dev->dev.archdata; sd->of_node = pci_device_to_OF_node(dev); DBG("PCI device %s OF node: %s\n", pci_name(dev), sd->of_node ? sd->of_node->full_name : "<none>"); sd->dma_ops = pci_dma_ops; #ifdef CONFIG_NUMA sd->numa_node = pcibus_to_node(dev->bus); #else sd->numa_node = -1; #endif if (ppc_md.pci_dma_dev_setup) ppc_md.pci_dma_dev_setup(dev); } EXPORT_SYMBOL(pcibios_setup_new_device); static void __devinit do_bus_setup(struct pci_bus *bus) { struct pci_dev *dev; if (ppc_md.pci_dma_bus_setup) ppc_md.pci_dma_bus_setup(bus); list_for_each_entry(dev, &bus->devices, bus_list) pcibios_setup_new_device(dev); /* Read default IRQs and fixup if necessary */ list_for_each_entry(dev, &bus->devices, bus_list) { pci_read_irq_line(dev); if (ppc_md.pci_irq_fixup) ppc_md.pci_irq_fixup(dev); } } void __devinit pcibios_fixup_bus(struct pci_bus *bus) { struct pci_dev *dev = bus->self; struct device_node *np; np = pci_bus_to_OF_node(bus); DBG("pcibios_fixup_bus(%s)\n", np ? np->full_name : "<???>"); if (dev && pci_probe_only && (dev->class >> 8) == PCI_CLASS_BRIDGE_PCI) { /* This is a subordinate bridge */ pci_read_bridge_bases(bus); pcibios_fixup_device_resources(dev, bus); } do_bus_setup(bus); if (!pci_probe_only) return; list_for_each_entry(dev, &bus->devices, bus_list) if ((dev->class >> 8) != PCI_CLASS_BRIDGE_PCI) pcibios_fixup_device_resources(dev, bus); } EXPORT_SYMBOL(pcibios_fixup_bus); unsigned long pci_address_to_pio(phys_addr_t address) { struct pci_controller *hose, *tmp; list_for_each_entry_safe(hose, tmp, &hose_list, list_node) { if (address >= hose->io_base_phys && address < (hose->io_base_phys + hose->pci_io_size)) { unsigned long base = (unsigned long)hose->io_base_virt - _IO_BASE; return base + (address - hose->io_base_phys); } } return (unsigned int)-1; } EXPORT_SYMBOL_GPL(pci_address_to_pio); #define IOBASE_BRIDGE_NUMBER 0 #define IOBASE_MEMORY 1 #define IOBASE_IO 2 #define IOBASE_ISA_IO 3 #define IOBASE_ISA_MEM 4 long sys_pciconfig_iobase(long which, unsigned long in_bus, unsigned long in_devfn) { struct pci_controller* hose; struct list_head *ln; struct pci_bus *bus = NULL; struct device_node *hose_node; /* Argh ! Please forgive me for that hack, but that's the * simplest way to get existing XFree to not lockup on some * G5 machines... So when something asks for bus 0 io base * (bus 0 is HT root), we return the AGP one instead. */ if (machine_is_compatible("MacRISC4")) if (in_bus == 0) in_bus = 0xf0; /* That syscall isn't quite compatible with PCI domains, but it's * used on pre-domains setup. We return the first match */ for (ln = pci_root_buses.next; ln != &pci_root_buses; ln = ln->next) { bus = pci_bus_b(ln); if (in_bus >= bus->number && in_bus <= bus->subordinate) break; bus = NULL; } if (bus == NULL || bus->sysdata == NULL) return -ENODEV; hose_node = (struct device_node *)bus->sysdata; hose = PCI_DN(hose_node)->phb; switch (which) { case IOBASE_BRIDGE_NUMBER: return (long)hose->first_busno; case IOBASE_MEMORY: return (long)hose->pci_mem_offset; case IOBASE_IO: return (long)hose->io_base_phys; case IOBASE_ISA_IO: return (long)isa_io_base; case IOBASE_ISA_MEM: return -EINVAL; } return -EOPNOTSUPP; } #ifdef CONFIG_NUMA int pcibus_to_node(struct pci_bus *bus) { struct pci_controller *phb = pci_bus_to_host(bus); return phb->node; } EXPORT_SYMBOL(pcibus_to_node); #endif