Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Port for PPC64 David Engebretsen, IBM Corp. |
| 3 | * Contains common pci routines for ppc64 platform, pSeries and iSeries brands. |
| 4 | * |
| 5 | * Copyright (C) 2003 Anton Blanchard <anton@au.ibm.com>, IBM |
| 6 | * Rework, based on alpha PCI code. |
| 7 | * |
| 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. |
| 12 | */ |
| 13 | |
| 14 | #undef DEBUG |
| 15 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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> |
| 21 | #include <linux/mm.h> |
| 22 | #include <linux/list.h> |
Paul Mackerras | b2ad7b5 | 2005-09-09 23:02:36 +1000 | [diff] [blame] | 23 | #include <linux/syscalls.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | |
| 25 | #include <asm/processor.h> |
| 26 | #include <asm/io.h> |
| 27 | #include <asm/prom.h> |
| 28 | #include <asm/pci-bridge.h> |
| 29 | #include <asm/byteorder.h> |
| 30 | #include <asm/irq.h> |
| 31 | #include <asm/machdep.h> |
Stephen Rothwell | d387899 | 2005-09-28 02:50:25 +1000 | [diff] [blame] | 32 | #include <asm/ppc-pci.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | |
| 34 | #ifdef DEBUG |
Michael Ellerman | f9e4ec5 | 2005-11-15 15:16:38 +1100 | [diff] [blame] | 35 | #include <asm/udbg.h> |
Benjamin Herrenschmidt | 1beb6a7 | 2005-12-14 13:10:10 +1100 | [diff] [blame] | 36 | #define DBG(fmt...) printk(fmt) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | #else |
| 38 | #define DBG(fmt...) |
| 39 | #endif |
| 40 | |
| 41 | unsigned long pci_probe_only = 1; |
Paul Mackerras | f8ef270 | 2005-11-19 20:46:04 +1100 | [diff] [blame] | 42 | int pci_assign_all_buses = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | |
Paul Mackerras | 4267292 | 2005-09-12 17:17:36 +1000 | [diff] [blame] | 44 | #ifdef CONFIG_PPC_MULTIPLATFORM |
| 45 | static void fixup_resource(struct resource *res, struct pci_dev *dev); |
| 46 | static void do_bus_setup(struct pci_bus *bus); |
Stephen Rothwell | 9623b5d | 2006-01-12 14:18:28 +1100 | [diff] [blame] | 47 | static void phbs_remap_io(void); |
Paul Mackerras | 4267292 | 2005-09-12 17:17:36 +1000 | [diff] [blame] | 48 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | /* pci_io_base -- the base address from which io bars are offsets. |
| 51 | * This is the lowest I/O base address (so bar values are always positive), |
| 52 | * and it *must* be the start of ISA space if an ISA bus exists because |
| 53 | * ISA drivers use hard coded offsets. If no ISA bus exists a dummy |
| 54 | * page is mapped and isa_io_limit prevents access to it. |
| 55 | */ |
| 56 | unsigned long isa_io_base; /* NULL if no ISA bus */ |
| 57 | EXPORT_SYMBOL(isa_io_base); |
| 58 | unsigned long pci_io_base; |
| 59 | EXPORT_SYMBOL(pci_io_base); |
| 60 | |
| 61 | void iSeries_pcibios_init(void); |
| 62 | |
| 63 | LIST_HEAD(hose_list); |
| 64 | |
| 65 | struct dma_mapping_ops pci_dma_ops; |
| 66 | EXPORT_SYMBOL(pci_dma_ops); |
| 67 | |
| 68 | int global_phb_number; /* Global phb counter */ |
| 69 | |
| 70 | /* Cached ISA bridge dev. */ |
| 71 | struct pci_dev *ppc64_isabridge_dev = NULL; |
Stephen Rothwell | b239cbe | 2006-03-28 14:40:58 +1100 | [diff] [blame] | 72 | EXPORT_SYMBOL_GPL(ppc64_isabridge_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 73 | |
| 74 | static void fixup_broken_pcnet32(struct pci_dev* dev) |
| 75 | { |
| 76 | if ((dev->class>>8 == PCI_CLASS_NETWORK_ETHERNET)) { |
| 77 | dev->vendor = PCI_VENDOR_ID_AMD; |
| 78 | pci_write_config_word(dev, PCI_VENDOR_ID, PCI_VENDOR_ID_AMD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | } |
| 80 | } |
| 81 | DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TRIDENT, PCI_ANY_ID, fixup_broken_pcnet32); |
| 82 | |
| 83 | void pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region, |
| 84 | struct resource *res) |
| 85 | { |
| 86 | unsigned long offset = 0; |
| 87 | struct pci_controller *hose = pci_bus_to_host(dev->bus); |
| 88 | |
| 89 | if (!hose) |
| 90 | return; |
| 91 | |
| 92 | if (res->flags & IORESOURCE_IO) |
| 93 | offset = (unsigned long)hose->io_base_virt - pci_io_base; |
| 94 | |
| 95 | if (res->flags & IORESOURCE_MEM) |
| 96 | offset = hose->pci_mem_offset; |
| 97 | |
| 98 | region->start = res->start - offset; |
| 99 | region->end = res->end - offset; |
| 100 | } |
| 101 | |
Dominik Brodowski | 43c3473 | 2005-08-04 18:06:21 -0700 | [diff] [blame] | 102 | void pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res, |
| 103 | struct pci_bus_region *region) |
| 104 | { |
| 105 | unsigned long offset = 0; |
| 106 | struct pci_controller *hose = pci_bus_to_host(dev->bus); |
| 107 | |
| 108 | if (!hose) |
| 109 | return; |
| 110 | |
| 111 | if (res->flags & IORESOURCE_IO) |
| 112 | offset = (unsigned long)hose->io_base_virt - pci_io_base; |
| 113 | |
| 114 | if (res->flags & IORESOURCE_MEM) |
| 115 | offset = hose->pci_mem_offset; |
| 116 | |
| 117 | res->start = region->start + offset; |
| 118 | res->end = region->end + offset; |
| 119 | } |
| 120 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 121 | #ifdef CONFIG_HOTPLUG |
| 122 | EXPORT_SYMBOL(pcibios_resource_to_bus); |
Dominik Brodowski | 43c3473 | 2005-08-04 18:06:21 -0700 | [diff] [blame] | 123 | EXPORT_SYMBOL(pcibios_bus_to_resource); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | #endif |
| 125 | |
| 126 | /* |
| 127 | * We need to avoid collisions with `mirrored' VGA ports |
| 128 | * and other strange ISA hardware, so we always want the |
| 129 | * addresses to be allocated in the 0x000-0x0ff region |
| 130 | * modulo 0x400. |
| 131 | * |
| 132 | * Why? Because some silly external IO cards only decode |
| 133 | * the low 10 bits of the IO address. The 0x00-0xff region |
| 134 | * is reserved for motherboard devices that decode all 16 |
| 135 | * bits, so it's ok to allocate at, say, 0x2800-0x28ff, |
| 136 | * but we want to try to avoid allocating at 0x2900-0x2bff |
| 137 | * which might have be mirrored at 0x0100-0x03ff.. |
| 138 | */ |
| 139 | void pcibios_align_resource(void *data, struct resource *res, |
Greg Kroah-Hartman | e31dd6e | 2006-06-12 17:06:02 -0700 | [diff] [blame] | 140 | resource_size_t size, resource_size_t align) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 141 | { |
| 142 | struct pci_dev *dev = data; |
| 143 | struct pci_controller *hose = pci_bus_to_host(dev->bus); |
Greg Kroah-Hartman | e31dd6e | 2006-06-12 17:06:02 -0700 | [diff] [blame] | 144 | resource_size_t start = res->start; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 145 | unsigned long alignto; |
| 146 | |
| 147 | if (res->flags & IORESOURCE_IO) { |
| 148 | unsigned long offset = (unsigned long)hose->io_base_virt - |
| 149 | pci_io_base; |
| 150 | /* Make sure we start at our min on all hoses */ |
| 151 | if (start - offset < PCIBIOS_MIN_IO) |
| 152 | start = PCIBIOS_MIN_IO + offset; |
| 153 | |
| 154 | /* |
| 155 | * Put everything into 0x00-0xff region modulo 0x400 |
| 156 | */ |
| 157 | if (start & 0x300) |
| 158 | start = (start + 0x3ff) & ~0x3ff; |
| 159 | |
| 160 | } else if (res->flags & IORESOURCE_MEM) { |
| 161 | /* Make sure we start at our min on all hoses */ |
| 162 | if (start - hose->pci_mem_offset < PCIBIOS_MIN_MEM) |
| 163 | start = PCIBIOS_MIN_MEM + hose->pci_mem_offset; |
| 164 | |
| 165 | /* Align to multiple of size of minimum base. */ |
| 166 | alignto = max(0x1000UL, align); |
| 167 | start = ALIGN(start, alignto); |
| 168 | } |
| 169 | |
| 170 | res->start = start; |
| 171 | } |
| 172 | |
| 173 | static DEFINE_SPINLOCK(hose_spinlock); |
| 174 | |
| 175 | /* |
| 176 | * pci_controller(phb) initialized common variables. |
| 177 | */ |
Benjamin Herrenschmidt | b5166cc | 2005-11-15 16:05:33 +1100 | [diff] [blame] | 178 | static void __devinit pci_setup_pci_controller(struct pci_controller *hose) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 179 | { |
| 180 | memset(hose, 0, sizeof(struct pci_controller)); |
| 181 | |
| 182 | spin_lock(&hose_spinlock); |
| 183 | hose->global_number = global_phb_number++; |
| 184 | list_add_tail(&hose->list_node, &hose_list); |
| 185 | spin_unlock(&hose_spinlock); |
| 186 | } |
| 187 | |
Benjamin Herrenschmidt | b5166cc | 2005-11-15 16:05:33 +1100 | [diff] [blame] | 188 | static void add_linux_pci_domain(struct device_node *dev, |
| 189 | struct pci_controller *phb) |
| 190 | { |
| 191 | struct property *of_prop; |
| 192 | unsigned int size; |
| 193 | |
| 194 | of_prop = (struct property *) |
| 195 | get_property(dev, "linux,pci-domain", &size); |
| 196 | if (of_prop != NULL) |
| 197 | return; |
| 198 | WARN_ON(of_prop && size < sizeof(int)); |
| 199 | if (of_prop && size < sizeof(int)) |
| 200 | of_prop = NULL; |
| 201 | size = sizeof(struct property) + sizeof(int); |
| 202 | if (of_prop == NULL) { |
| 203 | if (mem_init_done) |
| 204 | of_prop = kmalloc(size, GFP_KERNEL); |
| 205 | else |
| 206 | of_prop = alloc_bootmem(size); |
| 207 | } |
| 208 | memset(of_prop, 0, sizeof(struct property)); |
| 209 | of_prop->name = "linux,pci-domain"; |
| 210 | of_prop->length = sizeof(int); |
| 211 | of_prop->value = (unsigned char *)&of_prop[1]; |
| 212 | *((int *)of_prop->value) = phb->global_number; |
| 213 | prom_add_property(dev, of_prop); |
| 214 | } |
| 215 | |
| 216 | struct pci_controller * pcibios_alloc_controller(struct device_node *dev) |
| 217 | { |
| 218 | struct pci_controller *phb; |
| 219 | |
| 220 | if (mem_init_done) |
| 221 | phb = kmalloc(sizeof(struct pci_controller), GFP_KERNEL); |
| 222 | else |
| 223 | phb = alloc_bootmem(sizeof (struct pci_controller)); |
| 224 | if (phb == NULL) |
| 225 | return NULL; |
| 226 | pci_setup_pci_controller(phb); |
| 227 | phb->arch_data = dev; |
| 228 | phb->is_dynamic = mem_init_done; |
Anton Blanchard | 357518f | 2006-06-10 20:53:06 +1000 | [diff] [blame] | 229 | if (dev) { |
| 230 | PHB_SET_NODE(phb, of_node_to_nid(dev)); |
Benjamin Herrenschmidt | b5166cc | 2005-11-15 16:05:33 +1100 | [diff] [blame] | 231 | add_linux_pci_domain(dev, phb); |
Anton Blanchard | 357518f | 2006-06-10 20:53:06 +1000 | [diff] [blame] | 232 | } |
Benjamin Herrenschmidt | b5166cc | 2005-11-15 16:05:33 +1100 | [diff] [blame] | 233 | return phb; |
| 234 | } |
| 235 | |
| 236 | void pcibios_free_controller(struct pci_controller *phb) |
| 237 | { |
| 238 | if (phb->arch_data) { |
| 239 | struct device_node *np = phb->arch_data; |
| 240 | int *domain = (int *)get_property(np, |
| 241 | "linux,pci-domain", NULL); |
| 242 | if (domain) |
| 243 | *domain = -1; |
| 244 | } |
| 245 | if (phb->is_dynamic) |
| 246 | kfree(phb); |
| 247 | } |
| 248 | |
Stephen Rothwell | 9623b5d | 2006-01-12 14:18:28 +1100 | [diff] [blame] | 249 | #ifndef CONFIG_PPC_ISERIES |
Linas Vepstas | facf078 | 2005-11-03 18:52:01 -0600 | [diff] [blame] | 250 | void __devinit pcibios_claim_one_bus(struct pci_bus *b) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 251 | { |
| 252 | struct pci_dev *dev; |
| 253 | struct pci_bus *child_bus; |
| 254 | |
| 255 | list_for_each_entry(dev, &b->devices, bus_list) { |
| 256 | int i; |
| 257 | |
| 258 | for (i = 0; i < PCI_NUM_RESOURCES; i++) { |
| 259 | struct resource *r = &dev->resource[i]; |
| 260 | |
| 261 | if (r->parent || !r->start || !r->flags) |
| 262 | continue; |
| 263 | pci_claim_resource(dev, i); |
| 264 | } |
| 265 | } |
| 266 | |
| 267 | list_for_each_entry(child_bus, &b->children, node) |
| 268 | pcibios_claim_one_bus(child_bus); |
| 269 | } |
linas | af9deab | 2006-01-10 15:18:16 -0600 | [diff] [blame] | 270 | #ifdef CONFIG_HOTPLUG |
| 271 | EXPORT_SYMBOL_GPL(pcibios_claim_one_bus); |
| 272 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 273 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 274 | static void __init pcibios_claim_of_setup(void) |
| 275 | { |
| 276 | struct pci_bus *b; |
| 277 | |
| 278 | list_for_each_entry(b, &pci_root_buses, node) |
| 279 | pcibios_claim_one_bus(b); |
| 280 | } |
| 281 | #endif |
| 282 | |
Paul Mackerras | 4267292 | 2005-09-12 17:17:36 +1000 | [diff] [blame] | 283 | #ifdef CONFIG_PPC_MULTIPLATFORM |
| 284 | static u32 get_int_prop(struct device_node *np, const char *name, u32 def) |
| 285 | { |
| 286 | u32 *prop; |
| 287 | int len; |
| 288 | |
| 289 | prop = (u32 *) get_property(np, name, &len); |
| 290 | if (prop && len >= 4) |
| 291 | return *prop; |
| 292 | return def; |
| 293 | } |
| 294 | |
| 295 | static unsigned int pci_parse_of_flags(u32 addr0) |
| 296 | { |
| 297 | unsigned int flags = 0; |
| 298 | |
| 299 | if (addr0 & 0x02000000) { |
Paul Mackerras | d79e743 | 2005-09-21 14:14:22 +1000 | [diff] [blame] | 300 | flags = IORESOURCE_MEM | PCI_BASE_ADDRESS_SPACE_MEMORY; |
| 301 | flags |= (addr0 >> 22) & PCI_BASE_ADDRESS_MEM_TYPE_64; |
| 302 | flags |= (addr0 >> 28) & PCI_BASE_ADDRESS_MEM_TYPE_1M; |
Paul Mackerras | 4267292 | 2005-09-12 17:17:36 +1000 | [diff] [blame] | 303 | if (addr0 & 0x40000000) |
Paul Mackerras | d79e743 | 2005-09-21 14:14:22 +1000 | [diff] [blame] | 304 | flags |= IORESOURCE_PREFETCH |
| 305 | | PCI_BASE_ADDRESS_MEM_PREFETCH; |
Paul Mackerras | 4267292 | 2005-09-12 17:17:36 +1000 | [diff] [blame] | 306 | } else if (addr0 & 0x01000000) |
Paul Mackerras | d79e743 | 2005-09-21 14:14:22 +1000 | [diff] [blame] | 307 | flags = IORESOURCE_IO | PCI_BASE_ADDRESS_SPACE_IO; |
Paul Mackerras | 4267292 | 2005-09-12 17:17:36 +1000 | [diff] [blame] | 308 | return flags; |
| 309 | } |
| 310 | |
| 311 | #define GET_64BIT(prop, i) ((((u64) (prop)[(i)]) << 32) | (prop)[(i)+1]) |
| 312 | |
| 313 | static void pci_parse_of_addrs(struct device_node *node, struct pci_dev *dev) |
| 314 | { |
| 315 | u64 base, size; |
| 316 | unsigned int flags; |
| 317 | struct resource *res; |
| 318 | u32 *addrs, i; |
| 319 | int proplen; |
| 320 | |
| 321 | addrs = (u32 *) get_property(node, "assigned-addresses", &proplen); |
| 322 | if (!addrs) |
| 323 | return; |
Benjamin Herrenschmidt | 1beb6a7 | 2005-12-14 13:10:10 +1100 | [diff] [blame] | 324 | DBG(" parse addresses (%d bytes) @ %p\n", proplen, addrs); |
Paul Mackerras | 4267292 | 2005-09-12 17:17:36 +1000 | [diff] [blame] | 325 | for (; proplen >= 20; proplen -= 20, addrs += 5) { |
| 326 | flags = pci_parse_of_flags(addrs[0]); |
| 327 | if (!flags) |
| 328 | continue; |
| 329 | base = GET_64BIT(addrs, 1); |
| 330 | size = GET_64BIT(addrs, 3); |
| 331 | if (!size) |
| 332 | continue; |
| 333 | i = addrs[0] & 0xff; |
Benjamin Herrenschmidt | 1beb6a7 | 2005-12-14 13:10:10 +1100 | [diff] [blame] | 334 | DBG(" base: %llx, size: %llx, i: %x\n", |
| 335 | (unsigned long long)base, (unsigned long long)size, i); |
| 336 | |
Paul Mackerras | 4267292 | 2005-09-12 17:17:36 +1000 | [diff] [blame] | 337 | if (PCI_BASE_ADDRESS_0 <= i && i <= PCI_BASE_ADDRESS_5) { |
| 338 | res = &dev->resource[(i - PCI_BASE_ADDRESS_0) >> 2]; |
| 339 | } else if (i == dev->rom_base_reg) { |
| 340 | res = &dev->resource[PCI_ROM_RESOURCE]; |
| 341 | flags |= IORESOURCE_READONLY | IORESOURCE_CACHEABLE; |
| 342 | } else { |
| 343 | printk(KERN_ERR "PCI: bad cfg reg num 0x%x\n", i); |
| 344 | continue; |
| 345 | } |
| 346 | res->start = base; |
| 347 | res->end = base + size - 1; |
| 348 | res->flags = flags; |
| 349 | res->name = pci_name(dev); |
| 350 | fixup_resource(res, dev); |
| 351 | } |
| 352 | } |
| 353 | |
John Rose | ead8371 | 2005-11-04 15:30:56 -0600 | [diff] [blame] | 354 | struct pci_dev *of_create_pci_dev(struct device_node *node, |
| 355 | struct pci_bus *bus, int devfn) |
Paul Mackerras | 4267292 | 2005-09-12 17:17:36 +1000 | [diff] [blame] | 356 | { |
| 357 | struct pci_dev *dev; |
| 358 | const char *type; |
| 359 | |
| 360 | dev = kmalloc(sizeof(struct pci_dev), GFP_KERNEL); |
| 361 | if (!dev) |
| 362 | return NULL; |
| 363 | type = get_property(node, "device_type", NULL); |
| 364 | if (type == NULL) |
| 365 | type = ""; |
| 366 | |
Benjamin Herrenschmidt | 1beb6a7 | 2005-12-14 13:10:10 +1100 | [diff] [blame] | 367 | DBG(" create device, devfn: %x, type: %s\n", devfn, type); |
| 368 | |
Paul Mackerras | 4267292 | 2005-09-12 17:17:36 +1000 | [diff] [blame] | 369 | memset(dev, 0, sizeof(struct pci_dev)); |
| 370 | dev->bus = bus; |
| 371 | dev->sysdata = node; |
| 372 | dev->dev.parent = bus->bridge; |
| 373 | dev->dev.bus = &pci_bus_type; |
| 374 | dev->devfn = devfn; |
| 375 | dev->multifunction = 0; /* maybe a lie? */ |
| 376 | |
| 377 | dev->vendor = get_int_prop(node, "vendor-id", 0xffff); |
| 378 | dev->device = get_int_prop(node, "device-id", 0xffff); |
| 379 | dev->subsystem_vendor = get_int_prop(node, "subsystem-vendor-id", 0); |
| 380 | dev->subsystem_device = get_int_prop(node, "subsystem-id", 0); |
| 381 | |
Benjamin Herrenschmidt | 9d17a5c | 2006-01-10 14:50:37 +1100 | [diff] [blame] | 382 | dev->cfg_size = pci_cfg_space_size(dev); |
Paul Mackerras | 4267292 | 2005-09-12 17:17:36 +1000 | [diff] [blame] | 383 | |
| 384 | sprintf(pci_name(dev), "%04x:%02x:%02x.%d", pci_domain_nr(bus), |
| 385 | dev->bus->number, PCI_SLOT(devfn), PCI_FUNC(devfn)); |
| 386 | dev->class = get_int_prop(node, "class-code", 0); |
| 387 | |
Benjamin Herrenschmidt | 1beb6a7 | 2005-12-14 13:10:10 +1100 | [diff] [blame] | 388 | DBG(" class: 0x%x\n", dev->class); |
| 389 | |
Paul Mackerras | 4267292 | 2005-09-12 17:17:36 +1000 | [diff] [blame] | 390 | dev->current_state = 4; /* unknown power state */ |
| 391 | |
Jake Moilanen | bb53bb3 | 2006-06-07 16:05:46 -0500 | [diff] [blame] | 392 | if (!strcmp(type, "pci") || !strcmp(type, "pciex")) { |
Paul Mackerras | 4267292 | 2005-09-12 17:17:36 +1000 | [diff] [blame] | 393 | /* a PCI-PCI bridge */ |
| 394 | dev->hdr_type = PCI_HEADER_TYPE_BRIDGE; |
| 395 | dev->rom_base_reg = PCI_ROM_ADDRESS1; |
| 396 | } else if (!strcmp(type, "cardbus")) { |
| 397 | dev->hdr_type = PCI_HEADER_TYPE_CARDBUS; |
| 398 | } else { |
| 399 | dev->hdr_type = PCI_HEADER_TYPE_NORMAL; |
| 400 | dev->rom_base_reg = PCI_ROM_ADDRESS; |
| 401 | dev->irq = NO_IRQ; |
| 402 | if (node->n_intrs > 0) { |
| 403 | dev->irq = node->intrs[0].line; |
| 404 | pci_write_config_byte(dev, PCI_INTERRUPT_LINE, |
| 405 | dev->irq); |
| 406 | } |
| 407 | } |
| 408 | |
| 409 | pci_parse_of_addrs(node, dev); |
| 410 | |
Benjamin Herrenschmidt | 1beb6a7 | 2005-12-14 13:10:10 +1100 | [diff] [blame] | 411 | DBG(" adding to system ...\n"); |
| 412 | |
Paul Mackerras | 4267292 | 2005-09-12 17:17:36 +1000 | [diff] [blame] | 413 | pci_device_add(dev, bus); |
| 414 | |
| 415 | /* XXX pci_scan_msi_device(dev); */ |
| 416 | |
| 417 | return dev; |
| 418 | } |
John Rose | ead8371 | 2005-11-04 15:30:56 -0600 | [diff] [blame] | 419 | EXPORT_SYMBOL(of_create_pci_dev); |
Paul Mackerras | 4267292 | 2005-09-12 17:17:36 +1000 | [diff] [blame] | 420 | |
John Rose | ead8371 | 2005-11-04 15:30:56 -0600 | [diff] [blame] | 421 | void __devinit of_scan_bus(struct device_node *node, |
Paul Mackerras | 4267292 | 2005-09-12 17:17:36 +1000 | [diff] [blame] | 422 | struct pci_bus *bus) |
| 423 | { |
| 424 | struct device_node *child = NULL; |
| 425 | u32 *reg; |
| 426 | int reglen, devfn; |
| 427 | struct pci_dev *dev; |
| 428 | |
Benjamin Herrenschmidt | 1beb6a7 | 2005-12-14 13:10:10 +1100 | [diff] [blame] | 429 | DBG("of_scan_bus(%s) bus no %d... \n", node->full_name, bus->number); |
| 430 | |
Paul Mackerras | 4267292 | 2005-09-12 17:17:36 +1000 | [diff] [blame] | 431 | while ((child = of_get_next_child(node, child)) != NULL) { |
Benjamin Herrenschmidt | 1beb6a7 | 2005-12-14 13:10:10 +1100 | [diff] [blame] | 432 | DBG(" * %s\n", child->full_name); |
Paul Mackerras | 4267292 | 2005-09-12 17:17:36 +1000 | [diff] [blame] | 433 | reg = (u32 *) get_property(child, "reg", ®len); |
| 434 | if (reg == NULL || reglen < 20) |
| 435 | continue; |
| 436 | devfn = (reg[0] >> 8) & 0xff; |
Benjamin Herrenschmidt | 1beb6a7 | 2005-12-14 13:10:10 +1100 | [diff] [blame] | 437 | |
Paul Mackerras | 4267292 | 2005-09-12 17:17:36 +1000 | [diff] [blame] | 438 | /* create a new pci_dev for this device */ |
| 439 | dev = of_create_pci_dev(child, bus, devfn); |
| 440 | if (!dev) |
| 441 | continue; |
Benjamin Herrenschmidt | 1beb6a7 | 2005-12-14 13:10:10 +1100 | [diff] [blame] | 442 | DBG("dev header type: %x\n", dev->hdr_type); |
| 443 | |
Paul Mackerras | 4267292 | 2005-09-12 17:17:36 +1000 | [diff] [blame] | 444 | if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE || |
| 445 | dev->hdr_type == PCI_HEADER_TYPE_CARDBUS) |
| 446 | of_scan_pci_bridge(child, dev); |
| 447 | } |
| 448 | |
| 449 | do_bus_setup(bus); |
| 450 | } |
John Rose | ead8371 | 2005-11-04 15:30:56 -0600 | [diff] [blame] | 451 | EXPORT_SYMBOL(of_scan_bus); |
Paul Mackerras | 4267292 | 2005-09-12 17:17:36 +1000 | [diff] [blame] | 452 | |
John Rose | ead8371 | 2005-11-04 15:30:56 -0600 | [diff] [blame] | 453 | void __devinit of_scan_pci_bridge(struct device_node *node, |
| 454 | struct pci_dev *dev) |
Paul Mackerras | 4267292 | 2005-09-12 17:17:36 +1000 | [diff] [blame] | 455 | { |
| 456 | struct pci_bus *bus; |
| 457 | u32 *busrange, *ranges; |
| 458 | int len, i, mode; |
| 459 | struct resource *res; |
| 460 | unsigned int flags; |
| 461 | u64 size; |
| 462 | |
Benjamin Herrenschmidt | 1beb6a7 | 2005-12-14 13:10:10 +1100 | [diff] [blame] | 463 | DBG("of_scan_pci_bridge(%s)\n", node->full_name); |
| 464 | |
Paul Mackerras | 4267292 | 2005-09-12 17:17:36 +1000 | [diff] [blame] | 465 | /* parse bus-range property */ |
| 466 | busrange = (u32 *) get_property(node, "bus-range", &len); |
| 467 | if (busrange == NULL || len != 8) { |
Benjamin Herrenschmidt | 1beb6a7 | 2005-12-14 13:10:10 +1100 | [diff] [blame] | 468 | printk(KERN_DEBUG "Can't get bus-range for PCI-PCI bridge %s\n", |
Paul Mackerras | 4267292 | 2005-09-12 17:17:36 +1000 | [diff] [blame] | 469 | node->full_name); |
| 470 | return; |
| 471 | } |
| 472 | ranges = (u32 *) get_property(node, "ranges", &len); |
| 473 | if (ranges == NULL) { |
Benjamin Herrenschmidt | 1beb6a7 | 2005-12-14 13:10:10 +1100 | [diff] [blame] | 474 | printk(KERN_DEBUG "Can't get ranges for PCI-PCI bridge %s\n", |
Paul Mackerras | 4267292 | 2005-09-12 17:17:36 +1000 | [diff] [blame] | 475 | node->full_name); |
| 476 | return; |
| 477 | } |
| 478 | |
| 479 | bus = pci_add_new_bus(dev->bus, dev, busrange[0]); |
| 480 | if (!bus) { |
| 481 | printk(KERN_ERR "Failed to create pci bus for %s\n", |
| 482 | node->full_name); |
| 483 | return; |
| 484 | } |
| 485 | |
| 486 | bus->primary = dev->bus->number; |
| 487 | bus->subordinate = busrange[1]; |
| 488 | bus->bridge_ctl = 0; |
| 489 | bus->sysdata = node; |
| 490 | |
| 491 | /* parse ranges property */ |
| 492 | /* PCI #address-cells == 3 and #size-cells == 2 always */ |
| 493 | res = &dev->resource[PCI_BRIDGE_RESOURCES]; |
| 494 | for (i = 0; i < PCI_NUM_RESOURCES - PCI_BRIDGE_RESOURCES; ++i) { |
| 495 | res->flags = 0; |
| 496 | bus->resource[i] = res; |
| 497 | ++res; |
| 498 | } |
| 499 | i = 1; |
| 500 | for (; len >= 32; len -= 32, ranges += 8) { |
| 501 | flags = pci_parse_of_flags(ranges[0]); |
| 502 | size = GET_64BIT(ranges, 6); |
| 503 | if (flags == 0 || size == 0) |
| 504 | continue; |
| 505 | if (flags & IORESOURCE_IO) { |
| 506 | res = bus->resource[0]; |
| 507 | if (res->flags) { |
| 508 | printk(KERN_ERR "PCI: ignoring extra I/O range" |
| 509 | " for bridge %s\n", node->full_name); |
| 510 | continue; |
| 511 | } |
| 512 | } else { |
| 513 | if (i >= PCI_NUM_RESOURCES - PCI_BRIDGE_RESOURCES) { |
| 514 | printk(KERN_ERR "PCI: too many memory ranges" |
| 515 | " for bridge %s\n", node->full_name); |
| 516 | continue; |
| 517 | } |
| 518 | res = bus->resource[i]; |
| 519 | ++i; |
| 520 | } |
| 521 | res->start = GET_64BIT(ranges, 1); |
| 522 | res->end = res->start + size - 1; |
| 523 | res->flags = flags; |
| 524 | fixup_resource(res, dev); |
| 525 | } |
| 526 | sprintf(bus->name, "PCI Bus %04x:%02x", pci_domain_nr(bus), |
| 527 | bus->number); |
Benjamin Herrenschmidt | 1beb6a7 | 2005-12-14 13:10:10 +1100 | [diff] [blame] | 528 | DBG(" bus name: %s\n", bus->name); |
Paul Mackerras | 4267292 | 2005-09-12 17:17:36 +1000 | [diff] [blame] | 529 | |
| 530 | mode = PCI_PROBE_NORMAL; |
| 531 | if (ppc_md.pci_probe_mode) |
| 532 | mode = ppc_md.pci_probe_mode(bus); |
Benjamin Herrenschmidt | 1beb6a7 | 2005-12-14 13:10:10 +1100 | [diff] [blame] | 533 | DBG(" probe mode: %d\n", mode); |
| 534 | |
Paul Mackerras | 4267292 | 2005-09-12 17:17:36 +1000 | [diff] [blame] | 535 | if (mode == PCI_PROBE_DEVTREE) |
| 536 | of_scan_bus(node, bus); |
| 537 | else if (mode == PCI_PROBE_NORMAL) |
| 538 | pci_scan_child_bus(bus); |
| 539 | } |
John Rose | ead8371 | 2005-11-04 15:30:56 -0600 | [diff] [blame] | 540 | EXPORT_SYMBOL(of_scan_pci_bridge); |
Paul Mackerras | 4267292 | 2005-09-12 17:17:36 +1000 | [diff] [blame] | 541 | #endif /* CONFIG_PPC_MULTIPLATFORM */ |
| 542 | |
John Rose | ead8371 | 2005-11-04 15:30:56 -0600 | [diff] [blame] | 543 | void __devinit scan_phb(struct pci_controller *hose) |
Paul Mackerras | 4267292 | 2005-09-12 17:17:36 +1000 | [diff] [blame] | 544 | { |
| 545 | struct pci_bus *bus; |
| 546 | struct device_node *node = hose->arch_data; |
| 547 | int i, mode; |
| 548 | struct resource *res; |
| 549 | |
Benjamin Herrenschmidt | 1beb6a7 | 2005-12-14 13:10:10 +1100 | [diff] [blame] | 550 | DBG("Scanning PHB %s\n", node ? node->full_name : "<NO NAME>"); |
| 551 | |
Paul Mackerras | 4267292 | 2005-09-12 17:17:36 +1000 | [diff] [blame] | 552 | bus = pci_create_bus(NULL, hose->first_busno, hose->ops, node); |
| 553 | if (bus == NULL) { |
| 554 | printk(KERN_ERR "Failed to create bus for PCI domain %04x\n", |
| 555 | hose->global_number); |
| 556 | return; |
| 557 | } |
| 558 | bus->secondary = hose->first_busno; |
| 559 | hose->bus = bus; |
| 560 | |
| 561 | bus->resource[0] = res = &hose->io_resource; |
| 562 | if (res->flags && request_resource(&ioport_resource, res)) |
| 563 | printk(KERN_ERR "Failed to request PCI IO region " |
| 564 | "on PCI domain %04x\n", hose->global_number); |
| 565 | |
| 566 | for (i = 0; i < 3; ++i) { |
| 567 | res = &hose->mem_resources[i]; |
| 568 | bus->resource[i+1] = res; |
| 569 | if (res->flags && request_resource(&iomem_resource, res)) |
| 570 | printk(KERN_ERR "Failed to request PCI memory region " |
| 571 | "on PCI domain %04x\n", hose->global_number); |
| 572 | } |
| 573 | |
| 574 | mode = PCI_PROBE_NORMAL; |
| 575 | #ifdef CONFIG_PPC_MULTIPLATFORM |
Benjamin Herrenschmidt | 1beb6a7 | 2005-12-14 13:10:10 +1100 | [diff] [blame] | 576 | if (node && ppc_md.pci_probe_mode) |
Paul Mackerras | 4267292 | 2005-09-12 17:17:36 +1000 | [diff] [blame] | 577 | mode = ppc_md.pci_probe_mode(bus); |
Benjamin Herrenschmidt | 1beb6a7 | 2005-12-14 13:10:10 +1100 | [diff] [blame] | 578 | DBG(" probe mode: %d\n", mode); |
Paul Mackerras | 4267292 | 2005-09-12 17:17:36 +1000 | [diff] [blame] | 579 | if (mode == PCI_PROBE_DEVTREE) { |
| 580 | bus->subordinate = hose->last_busno; |
| 581 | of_scan_bus(node, bus); |
| 582 | } |
| 583 | #endif /* CONFIG_PPC_MULTIPLATFORM */ |
| 584 | if (mode == PCI_PROBE_NORMAL) |
| 585 | hose->last_busno = bus->subordinate = pci_scan_child_bus(bus); |
Paul Mackerras | 4267292 | 2005-09-12 17:17:36 +1000 | [diff] [blame] | 586 | } |
| 587 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 588 | static int __init pcibios_init(void) |
| 589 | { |
| 590 | struct pci_controller *hose, *tmp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 591 | |
| 592 | /* For now, override phys_mem_access_prot. If we need it, |
| 593 | * later, we may move that initialization to each ppc_md |
| 594 | */ |
| 595 | ppc_md.phys_mem_access_prot = pci_phys_mem_access_prot; |
| 596 | |
| 597 | #ifdef CONFIG_PPC_ISERIES |
| 598 | iSeries_pcibios_init(); |
| 599 | #endif |
| 600 | |
Olof Johansson | e884e9c | 2006-04-12 15:26:59 -0500 | [diff] [blame] | 601 | printk(KERN_DEBUG "PCI: Probing PCI hardware\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 602 | |
| 603 | /* Scan all of the recorded PCI controllers. */ |
John Rose | 92eb460 | 2006-03-14 17:46:45 -0600 | [diff] [blame] | 604 | list_for_each_entry_safe(hose, tmp, &hose_list, list_node) { |
Paul Mackerras | 4267292 | 2005-09-12 17:17:36 +1000 | [diff] [blame] | 605 | scan_phb(hose); |
John Rose | 92eb460 | 2006-03-14 17:46:45 -0600 | [diff] [blame] | 606 | pci_bus_add_devices(hose->bus); |
| 607 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 608 | |
| 609 | #ifndef CONFIG_PPC_ISERIES |
| 610 | if (pci_probe_only) |
| 611 | pcibios_claim_of_setup(); |
| 612 | else |
| 613 | /* FIXME: `else' will be removed when |
| 614 | pci_assign_unassigned_resources() is able to work |
| 615 | correctly with [partially] allocated PCI tree. */ |
| 616 | pci_assign_unassigned_resources(); |
| 617 | #endif /* !CONFIG_PPC_ISERIES */ |
| 618 | |
| 619 | /* Call machine dependent final fixup */ |
| 620 | if (ppc_md.pcibios_fixup) |
| 621 | ppc_md.pcibios_fixup(); |
| 622 | |
| 623 | /* Cache the location of the ISA bridge (if we have one) */ |
| 624 | ppc64_isabridge_dev = pci_get_class(PCI_CLASS_BRIDGE_ISA << 8, NULL); |
| 625 | if (ppc64_isabridge_dev != NULL) |
Olof Johansson | e884e9c | 2006-04-12 15:26:59 -0500 | [diff] [blame] | 626 | printk(KERN_DEBUG "ISA bridge at %s\n", pci_name(ppc64_isabridge_dev)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 627 | |
Stephen Rothwell | fe360cd | 2005-11-10 16:07:12 +1100 | [diff] [blame] | 628 | #ifdef CONFIG_PPC_MULTIPLATFORM |
Benjamin Herrenschmidt | 0f34f49 | 2005-11-10 15:04:24 +1100 | [diff] [blame] | 629 | /* map in PCI I/O space */ |
| 630 | phbs_remap_io(); |
Stephen Rothwell | fe360cd | 2005-11-10 16:07:12 +1100 | [diff] [blame] | 631 | #endif |
Benjamin Herrenschmidt | 0f34f49 | 2005-11-10 15:04:24 +1100 | [diff] [blame] | 632 | |
Olof Johansson | e884e9c | 2006-04-12 15:26:59 -0500 | [diff] [blame] | 633 | printk(KERN_DEBUG "PCI: Probing PCI hardware done\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 634 | |
| 635 | return 0; |
| 636 | } |
| 637 | |
| 638 | subsys_initcall(pcibios_init); |
| 639 | |
| 640 | char __init *pcibios_setup(char *str) |
| 641 | { |
| 642 | return str; |
| 643 | } |
| 644 | |
| 645 | int pcibios_enable_device(struct pci_dev *dev, int mask) |
| 646 | { |
| 647 | u16 cmd, oldcmd; |
| 648 | int i; |
| 649 | |
| 650 | pci_read_config_word(dev, PCI_COMMAND, &cmd); |
| 651 | oldcmd = cmd; |
| 652 | |
| 653 | for (i = 0; i < PCI_NUM_RESOURCES; i++) { |
| 654 | struct resource *res = &dev->resource[i]; |
| 655 | |
| 656 | /* Only set up the requested stuff */ |
| 657 | if (!(mask & (1<<i))) |
| 658 | continue; |
| 659 | |
| 660 | if (res->flags & IORESOURCE_IO) |
| 661 | cmd |= PCI_COMMAND_IO; |
| 662 | if (res->flags & IORESOURCE_MEM) |
| 663 | cmd |= PCI_COMMAND_MEMORY; |
| 664 | } |
| 665 | |
| 666 | if (cmd != oldcmd) { |
| 667 | printk(KERN_DEBUG "PCI: Enabling device: (%s), cmd %x\n", |
| 668 | pci_name(dev), cmd); |
| 669 | /* Enable the appropriate bits in the PCI command register. */ |
| 670 | pci_write_config_word(dev, PCI_COMMAND, cmd); |
| 671 | } |
| 672 | return 0; |
| 673 | } |
| 674 | |
| 675 | /* |
| 676 | * Return the domain number for this bus. |
| 677 | */ |
| 678 | int pci_domain_nr(struct pci_bus *bus) |
| 679 | { |
| 680 | #ifdef CONFIG_PPC_ISERIES |
| 681 | return 0; |
| 682 | #else |
| 683 | struct pci_controller *hose = pci_bus_to_host(bus); |
| 684 | |
| 685 | return hose->global_number; |
| 686 | #endif |
| 687 | } |
| 688 | |
| 689 | EXPORT_SYMBOL(pci_domain_nr); |
| 690 | |
| 691 | /* Decide whether to display the domain number in /proc */ |
| 692 | int pci_proc_domain(struct pci_bus *bus) |
| 693 | { |
| 694 | #ifdef CONFIG_PPC_ISERIES |
| 695 | return 0; |
| 696 | #else |
| 697 | struct pci_controller *hose = pci_bus_to_host(bus); |
| 698 | return hose->buid; |
| 699 | #endif |
| 700 | } |
| 701 | |
| 702 | /* |
| 703 | * Platform support for /proc/bus/pci/X/Y mmap()s, |
| 704 | * modelled on the sparc64 implementation by Dave Miller. |
| 705 | * -- paulus. |
| 706 | */ |
| 707 | |
| 708 | /* |
| 709 | * Adjust vm_pgoff of VMA such that it is the physical page offset |
| 710 | * corresponding to the 32-bit pci bus offset for DEV requested by the user. |
| 711 | * |
| 712 | * Basically, the user finds the base address for his device which he wishes |
| 713 | * to mmap. They read the 32-bit value from the config space base register, |
| 714 | * add whatever PAGE_SIZE multiple offset they wish, and feed this into the |
| 715 | * offset parameter of mmap on /proc/bus/pci/XXX for that device. |
| 716 | * |
| 717 | * Returns negative error code on failure, zero on success. |
| 718 | */ |
| 719 | static struct resource *__pci_mmap_make_offset(struct pci_dev *dev, |
| 720 | unsigned long *offset, |
| 721 | enum pci_mmap_state mmap_state) |
| 722 | { |
| 723 | struct pci_controller *hose = pci_bus_to_host(dev->bus); |
| 724 | unsigned long io_offset = 0; |
| 725 | int i, res_bit; |
| 726 | |
| 727 | if (hose == 0) |
| 728 | return NULL; /* should never happen */ |
| 729 | |
| 730 | /* If memory, add on the PCI bridge address offset */ |
| 731 | if (mmap_state == pci_mmap_mem) { |
| 732 | *offset += hose->pci_mem_offset; |
| 733 | res_bit = IORESOURCE_MEM; |
| 734 | } else { |
Michael Ellerman | 2311b1f | 2005-05-13 17:44:10 +1000 | [diff] [blame] | 735 | io_offset = (unsigned long)hose->io_base_virt - pci_io_base; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 736 | *offset += io_offset; |
| 737 | res_bit = IORESOURCE_IO; |
| 738 | } |
| 739 | |
| 740 | /* |
| 741 | * Check that the offset requested corresponds to one of the |
| 742 | * resources of the device. |
| 743 | */ |
| 744 | for (i = 0; i <= PCI_ROM_RESOURCE; i++) { |
| 745 | struct resource *rp = &dev->resource[i]; |
| 746 | int flags = rp->flags; |
| 747 | |
| 748 | /* treat ROM as memory (should be already) */ |
| 749 | if (i == PCI_ROM_RESOURCE) |
| 750 | flags |= IORESOURCE_MEM; |
| 751 | |
| 752 | /* Active and same type? */ |
| 753 | if ((flags & res_bit) == 0) |
| 754 | continue; |
| 755 | |
| 756 | /* In the range of this resource? */ |
| 757 | if (*offset < (rp->start & PAGE_MASK) || *offset > rp->end) |
| 758 | continue; |
| 759 | |
| 760 | /* found it! construct the final physical address */ |
| 761 | if (mmap_state == pci_mmap_io) |
Michael Ellerman | 2311b1f | 2005-05-13 17:44:10 +1000 | [diff] [blame] | 762 | *offset += hose->io_base_phys - io_offset; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 763 | return rp; |
| 764 | } |
| 765 | |
| 766 | return NULL; |
| 767 | } |
| 768 | |
| 769 | /* |
| 770 | * Set vm_page_prot of VMA, as appropriate for this architecture, for a pci |
| 771 | * device mapping. |
| 772 | */ |
| 773 | static pgprot_t __pci_mmap_set_pgprot(struct pci_dev *dev, struct resource *rp, |
| 774 | pgprot_t protection, |
| 775 | enum pci_mmap_state mmap_state, |
| 776 | int write_combine) |
| 777 | { |
| 778 | unsigned long prot = pgprot_val(protection); |
| 779 | |
| 780 | /* Write combine is always 0 on non-memory space mappings. On |
| 781 | * memory space, if the user didn't pass 1, we check for a |
| 782 | * "prefetchable" resource. This is a bit hackish, but we use |
| 783 | * this to workaround the inability of /sysfs to provide a write |
| 784 | * combine bit |
| 785 | */ |
| 786 | if (mmap_state != pci_mmap_mem) |
| 787 | write_combine = 0; |
| 788 | else if (write_combine == 0) { |
| 789 | if (rp->flags & IORESOURCE_PREFETCH) |
| 790 | write_combine = 1; |
| 791 | } |
| 792 | |
| 793 | /* XXX would be nice to have a way to ask for write-through */ |
| 794 | prot |= _PAGE_NO_CACHE; |
| 795 | if (write_combine) |
| 796 | prot &= ~_PAGE_GUARDED; |
| 797 | else |
| 798 | prot |= _PAGE_GUARDED; |
| 799 | |
Olof Johansson | e884e9c | 2006-04-12 15:26:59 -0500 | [diff] [blame] | 800 | printk(KERN_DEBUG "PCI map for %s:%lx, prot: %lx\n", pci_name(dev), rp->start, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 801 | prot); |
| 802 | |
| 803 | return __pgprot(prot); |
| 804 | } |
| 805 | |
| 806 | /* |
| 807 | * This one is used by /dev/mem and fbdev who have no clue about the |
| 808 | * PCI device, it tries to find the PCI device first and calls the |
| 809 | * above routine |
| 810 | */ |
| 811 | pgprot_t pci_phys_mem_access_prot(struct file *file, |
Roland Dreier | 8b15047 | 2005-10-28 17:46:18 -0700 | [diff] [blame] | 812 | unsigned long pfn, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 813 | unsigned long size, |
| 814 | pgprot_t protection) |
| 815 | { |
| 816 | struct pci_dev *pdev = NULL; |
| 817 | struct resource *found = NULL; |
| 818 | unsigned long prot = pgprot_val(protection); |
Roland Dreier | 8b15047 | 2005-10-28 17:46:18 -0700 | [diff] [blame] | 819 | unsigned long offset = pfn << PAGE_SHIFT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 820 | int i; |
| 821 | |
Roland Dreier | 8b15047 | 2005-10-28 17:46:18 -0700 | [diff] [blame] | 822 | if (page_is_ram(pfn)) |
David Gibson | 1f8d419 | 2005-05-05 16:15:13 -0700 | [diff] [blame] | 823 | return __pgprot(prot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 824 | |
| 825 | prot |= _PAGE_NO_CACHE | _PAGE_GUARDED; |
| 826 | |
| 827 | for_each_pci_dev(pdev) { |
| 828 | for (i = 0; i <= PCI_ROM_RESOURCE; i++) { |
| 829 | struct resource *rp = &pdev->resource[i]; |
| 830 | int flags = rp->flags; |
| 831 | |
| 832 | /* Active and same type? */ |
| 833 | if ((flags & IORESOURCE_MEM) == 0) |
| 834 | continue; |
| 835 | /* In the range of this resource? */ |
| 836 | if (offset < (rp->start & PAGE_MASK) || |
| 837 | offset > rp->end) |
| 838 | continue; |
| 839 | found = rp; |
| 840 | break; |
| 841 | } |
| 842 | if (found) |
| 843 | break; |
| 844 | } |
| 845 | if (found) { |
| 846 | if (found->flags & IORESOURCE_PREFETCH) |
| 847 | prot &= ~_PAGE_GUARDED; |
| 848 | pci_dev_put(pdev); |
| 849 | } |
| 850 | |
| 851 | DBG("non-PCI map for %lx, prot: %lx\n", offset, prot); |
| 852 | |
| 853 | return __pgprot(prot); |
| 854 | } |
| 855 | |
| 856 | |
| 857 | /* |
| 858 | * Perform the actual remap of the pages for a PCI device mapping, as |
| 859 | * appropriate for this architecture. The region in the process to map |
| 860 | * is described by vm_start and vm_end members of VMA, the base physical |
| 861 | * address is found in vm_pgoff. |
| 862 | * The pci device structure is provided so that architectures may make mapping |
| 863 | * decisions on a per-device or per-bus basis. |
| 864 | * |
| 865 | * Returns a negative error code on failure, zero on success. |
| 866 | */ |
| 867 | int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma, |
Benjamin Herrenschmidt | 1beb6a7 | 2005-12-14 13:10:10 +1100 | [diff] [blame] | 868 | enum pci_mmap_state mmap_state, int write_combine) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 869 | { |
| 870 | unsigned long offset = vma->vm_pgoff << PAGE_SHIFT; |
| 871 | struct resource *rp; |
| 872 | int ret; |
| 873 | |
| 874 | rp = __pci_mmap_make_offset(dev, &offset, mmap_state); |
| 875 | if (rp == NULL) |
| 876 | return -EINVAL; |
| 877 | |
| 878 | vma->vm_pgoff = offset >> PAGE_SHIFT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 879 | vma->vm_page_prot = __pci_mmap_set_pgprot(dev, rp, |
| 880 | vma->vm_page_prot, |
| 881 | mmap_state, write_combine); |
| 882 | |
| 883 | ret = remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff, |
| 884 | vma->vm_end - vma->vm_start, vma->vm_page_prot); |
| 885 | |
| 886 | return ret; |
| 887 | } |
| 888 | |
Stephen Rothwell | efbd386 | 2006-05-19 16:53:11 +1000 | [diff] [blame] | 889 | static ssize_t pci_show_devspec(struct device *dev, |
| 890 | struct device_attribute *attr, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 891 | { |
| 892 | struct pci_dev *pdev; |
| 893 | struct device_node *np; |
| 894 | |
| 895 | pdev = to_pci_dev (dev); |
| 896 | np = pci_device_to_OF_node(pdev); |
| 897 | if (np == NULL || np->full_name == NULL) |
| 898 | return 0; |
| 899 | return sprintf(buf, "%s", np->full_name); |
| 900 | } |
| 901 | static DEVICE_ATTR(devspec, S_IRUGO, pci_show_devspec, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 902 | |
| 903 | void pcibios_add_platform_entries(struct pci_dev *pdev) |
| 904 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 905 | device_create_file(&pdev->dev, &dev_attr_devspec); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 906 | } |
| 907 | |
| 908 | #ifdef CONFIG_PPC_MULTIPLATFORM |
| 909 | |
| 910 | #define ISA_SPACE_MASK 0x1 |
| 911 | #define ISA_SPACE_IO 0x1 |
| 912 | |
| 913 | static void __devinit pci_process_ISA_OF_ranges(struct device_node *isa_node, |
| 914 | unsigned long phb_io_base_phys, |
| 915 | void __iomem * phb_io_base_virt) |
| 916 | { |
Benjamin Herrenschmidt | cc5d018 | 2005-12-13 18:01:21 +1100 | [diff] [blame] | 917 | /* Remove these asap */ |
| 918 | |
| 919 | struct pci_address { |
| 920 | u32 a_hi; |
| 921 | u32 a_mid; |
| 922 | u32 a_lo; |
| 923 | }; |
| 924 | |
| 925 | struct isa_address { |
| 926 | u32 a_hi; |
| 927 | u32 a_lo; |
| 928 | }; |
| 929 | |
| 930 | struct isa_range { |
| 931 | struct isa_address isa_addr; |
| 932 | struct pci_address pci_addr; |
| 933 | unsigned int size; |
| 934 | }; |
| 935 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 936 | struct isa_range *range; |
| 937 | unsigned long pci_addr; |
| 938 | unsigned int isa_addr; |
| 939 | unsigned int size; |
| 940 | int rlen = 0; |
| 941 | |
| 942 | range = (struct isa_range *) get_property(isa_node, "ranges", &rlen); |
| 943 | if (range == NULL || (rlen < sizeof(struct isa_range))) { |
| 944 | printk(KERN_ERR "no ISA ranges or unexpected isa range size," |
| 945 | "mapping 64k\n"); |
Benjamin Herrenschmidt | dfbacdc | 2005-04-16 15:24:33 -0700 | [diff] [blame] | 946 | __ioremap_explicit(phb_io_base_phys, |
| 947 | (unsigned long)phb_io_base_virt, |
| 948 | 0x10000, _PAGE_NO_CACHE | _PAGE_GUARDED); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 949 | return; |
| 950 | } |
| 951 | |
| 952 | /* From "ISA Binding to 1275" |
| 953 | * The ranges property is laid out as an array of elements, |
| 954 | * each of which comprises: |
| 955 | * cells 0 - 1: an ISA address |
| 956 | * cells 2 - 4: a PCI address |
| 957 | * (size depending on dev->n_addr_cells) |
| 958 | * cell 5: the size of the range |
| 959 | */ |
| 960 | if ((range->isa_addr.a_hi && ISA_SPACE_MASK) == ISA_SPACE_IO) { |
| 961 | isa_addr = range->isa_addr.a_lo; |
| 962 | pci_addr = (unsigned long) range->pci_addr.a_mid << 32 | |
| 963 | range->pci_addr.a_lo; |
| 964 | |
| 965 | /* Assume these are both zero */ |
| 966 | if ((pci_addr != 0) || (isa_addr != 0)) { |
| 967 | printk(KERN_ERR "unexpected isa to pci mapping: %s\n", |
| 968 | __FUNCTION__); |
| 969 | return; |
| 970 | } |
| 971 | |
| 972 | size = PAGE_ALIGN(range->size); |
| 973 | |
| 974 | __ioremap_explicit(phb_io_base_phys, |
| 975 | (unsigned long) phb_io_base_virt, |
Benjamin Herrenschmidt | dfbacdc | 2005-04-16 15:24:33 -0700 | [diff] [blame] | 976 | size, _PAGE_NO_CACHE | _PAGE_GUARDED); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 977 | } |
| 978 | } |
| 979 | |
| 980 | void __devinit pci_process_bridge_OF_ranges(struct pci_controller *hose, |
Paul Mackerras | f7abbc1 | 2005-10-22 15:03:21 +1000 | [diff] [blame] | 981 | struct device_node *dev, int prim) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 982 | { |
Paul Mackerras | f7abbc1 | 2005-10-22 15:03:21 +1000 | [diff] [blame] | 983 | unsigned int *ranges, pci_space; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 984 | unsigned long size; |
| 985 | int rlen = 0; |
| 986 | int memno = 0; |
| 987 | struct resource *res; |
| 988 | int np, na = prom_n_addr_cells(dev); |
| 989 | unsigned long pci_addr, cpu_phys_addr; |
| 990 | |
| 991 | np = na + 5; |
| 992 | |
| 993 | /* From "PCI Binding to 1275" |
| 994 | * The ranges property is laid out as an array of elements, |
| 995 | * each of which comprises: |
| 996 | * cells 0 - 2: a PCI address |
| 997 | * cells 3 or 3+4: a CPU physical address |
| 998 | * (size depending on dev->n_addr_cells) |
| 999 | * cells 4+5 or 5+6: the size of the range |
| 1000 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1001 | ranges = (unsigned int *) get_property(dev, "ranges", &rlen); |
Benjamin Herrenschmidt | b5166cc | 2005-11-15 16:05:33 +1100 | [diff] [blame] | 1002 | if (ranges == NULL) |
| 1003 | return; |
| 1004 | hose->io_base_phys = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1005 | while ((rlen -= np * sizeof(unsigned int)) >= 0) { |
| 1006 | res = NULL; |
Paul Mackerras | f7abbc1 | 2005-10-22 15:03:21 +1000 | [diff] [blame] | 1007 | pci_space = ranges[0]; |
| 1008 | pci_addr = ((unsigned long)ranges[1] << 32) | ranges[2]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1009 | |
| 1010 | cpu_phys_addr = ranges[3]; |
Paul Mackerras | f7abbc1 | 2005-10-22 15:03:21 +1000 | [diff] [blame] | 1011 | if (na >= 2) |
| 1012 | cpu_phys_addr = (cpu_phys_addr << 32) | ranges[4]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1013 | |
Paul Mackerras | f7abbc1 | 2005-10-22 15:03:21 +1000 | [diff] [blame] | 1014 | size = ((unsigned long)ranges[na+3] << 32) | ranges[na+4]; |
| 1015 | ranges += np; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1016 | if (size == 0) |
| 1017 | continue; |
Paul Mackerras | f7abbc1 | 2005-10-22 15:03:21 +1000 | [diff] [blame] | 1018 | |
| 1019 | /* Now consume following elements while they are contiguous */ |
| 1020 | while (rlen >= np * sizeof(unsigned int)) { |
| 1021 | unsigned long addr, phys; |
| 1022 | |
| 1023 | if (ranges[0] != pci_space) |
| 1024 | break; |
| 1025 | addr = ((unsigned long)ranges[1] << 32) | ranges[2]; |
| 1026 | phys = ranges[3]; |
| 1027 | if (na >= 2) |
| 1028 | phys = (phys << 32) | ranges[4]; |
| 1029 | if (addr != pci_addr + size || |
| 1030 | phys != cpu_phys_addr + size) |
| 1031 | break; |
| 1032 | |
| 1033 | size += ((unsigned long)ranges[na+3] << 32) |
| 1034 | | ranges[na+4]; |
| 1035 | ranges += np; |
| 1036 | rlen -= np * sizeof(unsigned int); |
| 1037 | } |
| 1038 | |
| 1039 | switch ((pci_space >> 24) & 0x3) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1040 | case 1: /* I/O space */ |
| 1041 | hose->io_base_phys = cpu_phys_addr; |
| 1042 | hose->pci_io_size = size; |
| 1043 | |
| 1044 | res = &hose->io_resource; |
| 1045 | res->flags = IORESOURCE_IO; |
| 1046 | res->start = pci_addr; |
| 1047 | DBG("phb%d: IO 0x%lx -> 0x%lx\n", hose->global_number, |
| 1048 | res->start, res->start + size - 1); |
| 1049 | break; |
| 1050 | case 2: /* memory space */ |
| 1051 | memno = 0; |
| 1052 | while (memno < 3 && hose->mem_resources[memno].flags) |
| 1053 | ++memno; |
| 1054 | |
| 1055 | if (memno == 0) |
| 1056 | hose->pci_mem_offset = cpu_phys_addr - pci_addr; |
| 1057 | if (memno < 3) { |
| 1058 | res = &hose->mem_resources[memno]; |
| 1059 | res->flags = IORESOURCE_MEM; |
| 1060 | res->start = cpu_phys_addr; |
| 1061 | DBG("phb%d: MEM 0x%lx -> 0x%lx\n", hose->global_number, |
| 1062 | res->start, res->start + size - 1); |
| 1063 | } |
| 1064 | break; |
| 1065 | } |
| 1066 | if (res != NULL) { |
| 1067 | res->name = dev->full_name; |
| 1068 | res->end = res->start + size - 1; |
| 1069 | res->parent = NULL; |
| 1070 | res->sibling = NULL; |
| 1071 | res->child = NULL; |
| 1072 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1073 | } |
| 1074 | } |
| 1075 | |
| 1076 | void __init pci_setup_phb_io(struct pci_controller *hose, int primary) |
| 1077 | { |
| 1078 | unsigned long size = hose->pci_io_size; |
| 1079 | unsigned long io_virt_offset; |
| 1080 | struct resource *res; |
| 1081 | struct device_node *isa_dn; |
| 1082 | |
| 1083 | hose->io_base_virt = reserve_phb_iospace(size); |
| 1084 | DBG("phb%d io_base_phys 0x%lx io_base_virt 0x%lx\n", |
| 1085 | hose->global_number, hose->io_base_phys, |
| 1086 | (unsigned long) hose->io_base_virt); |
| 1087 | |
| 1088 | if (primary) { |
| 1089 | pci_io_base = (unsigned long)hose->io_base_virt; |
| 1090 | isa_dn = of_find_node_by_type(NULL, "isa"); |
| 1091 | if (isa_dn) { |
| 1092 | isa_io_base = pci_io_base; |
| 1093 | pci_process_ISA_OF_ranges(isa_dn, hose->io_base_phys, |
| 1094 | hose->io_base_virt); |
| 1095 | of_node_put(isa_dn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1096 | } |
| 1097 | } |
| 1098 | |
| 1099 | io_virt_offset = (unsigned long)hose->io_base_virt - pci_io_base; |
| 1100 | res = &hose->io_resource; |
| 1101 | res->start += io_virt_offset; |
| 1102 | res->end += io_virt_offset; |
| 1103 | } |
| 1104 | |
| 1105 | void __devinit pci_setup_phb_io_dynamic(struct pci_controller *hose, |
| 1106 | int primary) |
| 1107 | { |
| 1108 | unsigned long size = hose->pci_io_size; |
| 1109 | unsigned long io_virt_offset; |
| 1110 | struct resource *res; |
| 1111 | |
| 1112 | hose->io_base_virt = __ioremap(hose->io_base_phys, size, |
Benjamin Herrenschmidt | dfbacdc | 2005-04-16 15:24:33 -0700 | [diff] [blame] | 1113 | _PAGE_NO_CACHE | _PAGE_GUARDED); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1114 | DBG("phb%d io_base_phys 0x%lx io_base_virt 0x%lx\n", |
| 1115 | hose->global_number, hose->io_base_phys, |
| 1116 | (unsigned long) hose->io_base_virt); |
| 1117 | |
| 1118 | if (primary) |
| 1119 | pci_io_base = (unsigned long)hose->io_base_virt; |
| 1120 | |
| 1121 | io_virt_offset = (unsigned long)hose->io_base_virt - pci_io_base; |
| 1122 | res = &hose->io_resource; |
| 1123 | res->start += io_virt_offset; |
| 1124 | res->end += io_virt_offset; |
| 1125 | } |
| 1126 | |
| 1127 | |
| 1128 | static int get_bus_io_range(struct pci_bus *bus, unsigned long *start_phys, |
| 1129 | unsigned long *start_virt, unsigned long *size) |
| 1130 | { |
| 1131 | struct pci_controller *hose = pci_bus_to_host(bus); |
| 1132 | struct pci_bus_region region; |
| 1133 | struct resource *res; |
| 1134 | |
| 1135 | if (bus->self) { |
| 1136 | res = bus->resource[0]; |
| 1137 | pcibios_resource_to_bus(bus->self, ®ion, res); |
| 1138 | *start_phys = hose->io_base_phys + region.start; |
| 1139 | *start_virt = (unsigned long) hose->io_base_virt + |
| 1140 | region.start; |
| 1141 | if (region.end > region.start) |
| 1142 | *size = region.end - region.start + 1; |
| 1143 | else { |
| 1144 | printk("%s(): unexpected region 0x%lx->0x%lx\n", |
| 1145 | __FUNCTION__, region.start, region.end); |
| 1146 | return 1; |
| 1147 | } |
| 1148 | |
| 1149 | } else { |
| 1150 | /* Root Bus */ |
| 1151 | res = &hose->io_resource; |
| 1152 | *start_phys = hose->io_base_phys; |
| 1153 | *start_virt = (unsigned long) hose->io_base_virt; |
| 1154 | if (res->end > res->start) |
| 1155 | *size = res->end - res->start + 1; |
| 1156 | else { |
| 1157 | printk("%s(): unexpected region 0x%lx->0x%lx\n", |
| 1158 | __FUNCTION__, res->start, res->end); |
| 1159 | return 1; |
| 1160 | } |
| 1161 | } |
| 1162 | |
| 1163 | return 0; |
| 1164 | } |
| 1165 | |
| 1166 | int unmap_bus_range(struct pci_bus *bus) |
| 1167 | { |
| 1168 | unsigned long start_phys; |
| 1169 | unsigned long start_virt; |
| 1170 | unsigned long size; |
| 1171 | |
| 1172 | if (!bus) { |
| 1173 | printk(KERN_ERR "%s() expected bus\n", __FUNCTION__); |
| 1174 | return 1; |
| 1175 | } |
| 1176 | |
| 1177 | if (get_bus_io_range(bus, &start_phys, &start_virt, &size)) |
| 1178 | return 1; |
| 1179 | if (iounmap_explicit((void __iomem *) start_virt, size)) |
| 1180 | return 1; |
| 1181 | |
| 1182 | return 0; |
| 1183 | } |
| 1184 | EXPORT_SYMBOL(unmap_bus_range); |
| 1185 | |
| 1186 | int remap_bus_range(struct pci_bus *bus) |
| 1187 | { |
| 1188 | unsigned long start_phys; |
| 1189 | unsigned long start_virt; |
| 1190 | unsigned long size; |
| 1191 | |
| 1192 | if (!bus) { |
| 1193 | printk(KERN_ERR "%s() expected bus\n", __FUNCTION__); |
| 1194 | return 1; |
| 1195 | } |
| 1196 | |
| 1197 | |
| 1198 | if (get_bus_io_range(bus, &start_phys, &start_virt, &size)) |
| 1199 | return 1; |
Benjamin Herrenschmidt | b5166cc | 2005-11-15 16:05:33 +1100 | [diff] [blame] | 1200 | if (start_phys == 0) |
| 1201 | return 1; |
Olof Johansson | e884e9c | 2006-04-12 15:26:59 -0500 | [diff] [blame] | 1202 | printk(KERN_DEBUG "mapping IO %lx -> %lx, size: %lx\n", start_phys, start_virt, size); |
Benjamin Herrenschmidt | dfbacdc | 2005-04-16 15:24:33 -0700 | [diff] [blame] | 1203 | if (__ioremap_explicit(start_phys, start_virt, size, |
| 1204 | _PAGE_NO_CACHE | _PAGE_GUARDED)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1205 | return 1; |
| 1206 | |
| 1207 | return 0; |
| 1208 | } |
| 1209 | EXPORT_SYMBOL(remap_bus_range); |
| 1210 | |
Stephen Rothwell | 9623b5d | 2006-01-12 14:18:28 +1100 | [diff] [blame] | 1211 | static void phbs_remap_io(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1212 | { |
| 1213 | struct pci_controller *hose, *tmp; |
| 1214 | |
| 1215 | list_for_each_entry_safe(hose, tmp, &hose_list, list_node) |
| 1216 | remap_bus_range(hose->bus); |
| 1217 | } |
| 1218 | |
Paul Mackerras | 4267292 | 2005-09-12 17:17:36 +1000 | [diff] [blame] | 1219 | static void __devinit fixup_resource(struct resource *res, struct pci_dev *dev) |
| 1220 | { |
| 1221 | struct pci_controller *hose = pci_bus_to_host(dev->bus); |
Anton Blanchard | c256f4b | 2006-04-07 15:23:03 +1000 | [diff] [blame] | 1222 | unsigned long offset; |
Paul Mackerras | 4267292 | 2005-09-12 17:17:36 +1000 | [diff] [blame] | 1223 | |
| 1224 | if (res->flags & IORESOURCE_IO) { |
| 1225 | offset = (unsigned long)hose->io_base_virt - pci_io_base; |
| 1226 | |
Anton Blanchard | c256f4b | 2006-04-07 15:23:03 +1000 | [diff] [blame] | 1227 | res->start += offset; |
| 1228 | res->end += offset; |
Paul Mackerras | 4267292 | 2005-09-12 17:17:36 +1000 | [diff] [blame] | 1229 | } else if (res->flags & IORESOURCE_MEM) { |
| 1230 | res->start += hose->pci_mem_offset; |
| 1231 | res->end += hose->pci_mem_offset; |
| 1232 | } |
| 1233 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1234 | |
| 1235 | void __devinit pcibios_fixup_device_resources(struct pci_dev *dev, |
Paul Mackerras | 4267292 | 2005-09-12 17:17:36 +1000 | [diff] [blame] | 1236 | struct pci_bus *bus) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1237 | { |
| 1238 | /* Update device resources. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1239 | int i; |
| 1240 | |
Paul Mackerras | 4267292 | 2005-09-12 17:17:36 +1000 | [diff] [blame] | 1241 | for (i = 0; i < PCI_NUM_RESOURCES; i++) |
| 1242 | if (dev->resource[i].flags) |
| 1243 | fixup_resource(&dev->resource[i], dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1244 | } |
| 1245 | EXPORT_SYMBOL(pcibios_fixup_device_resources); |
| 1246 | |
Benjamin Herrenschmidt | 463ce0e | 2005-11-23 17:56:06 +1100 | [diff] [blame] | 1247 | |
Paul Mackerras | 4267292 | 2005-09-12 17:17:36 +1000 | [diff] [blame] | 1248 | static void __devinit do_bus_setup(struct pci_bus *bus) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1249 | { |
Paul Mackerras | 4267292 | 2005-09-12 17:17:36 +1000 | [diff] [blame] | 1250 | struct pci_dev *dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1251 | |
| 1252 | ppc_md.iommu_bus_setup(bus); |
| 1253 | |
| 1254 | list_for_each_entry(dev, &bus->devices, bus_list) |
| 1255 | ppc_md.iommu_dev_setup(dev); |
| 1256 | |
John Rose | dad32bb | 2005-06-23 17:09:54 +1000 | [diff] [blame] | 1257 | if (ppc_md.irq_bus_setup) |
| 1258 | ppc_md.irq_bus_setup(bus); |
Paul Mackerras | 4267292 | 2005-09-12 17:17:36 +1000 | [diff] [blame] | 1259 | } |
| 1260 | |
| 1261 | void __devinit pcibios_fixup_bus(struct pci_bus *bus) |
| 1262 | { |
| 1263 | struct pci_dev *dev = bus->self; |
| 1264 | |
| 1265 | if (dev && pci_probe_only && |
| 1266 | (dev->class >> 8) == PCI_CLASS_BRIDGE_PCI) { |
| 1267 | /* This is a subordinate bridge */ |
| 1268 | |
| 1269 | pci_read_bridge_bases(bus); |
| 1270 | pcibios_fixup_device_resources(dev, bus); |
| 1271 | } |
| 1272 | |
| 1273 | do_bus_setup(bus); |
John Rose | dad32bb | 2005-06-23 17:09:54 +1000 | [diff] [blame] | 1274 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1275 | if (!pci_probe_only) |
| 1276 | return; |
| 1277 | |
Paul Mackerras | 4267292 | 2005-09-12 17:17:36 +1000 | [diff] [blame] | 1278 | list_for_each_entry(dev, &bus->devices, bus_list) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1279 | if ((dev->class >> 8) != PCI_CLASS_BRIDGE_PCI) |
| 1280 | pcibios_fixup_device_resources(dev, bus); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1281 | } |
| 1282 | EXPORT_SYMBOL(pcibios_fixup_bus); |
| 1283 | |
| 1284 | /* |
| 1285 | * Reads the interrupt pin to determine if interrupt is use by card. |
| 1286 | * If the interrupt is used, then gets the interrupt line from the |
| 1287 | * openfirmware and sets it in the pci_dev and pci_config line. |
| 1288 | */ |
| 1289 | int pci_read_irq_line(struct pci_dev *pci_dev) |
| 1290 | { |
| 1291 | u8 intpin; |
| 1292 | struct device_node *node; |
| 1293 | |
| 1294 | pci_read_config_byte(pci_dev, PCI_INTERRUPT_PIN, &intpin); |
| 1295 | if (intpin == 0) |
| 1296 | return 0; |
| 1297 | |
| 1298 | node = pci_device_to_OF_node(pci_dev); |
| 1299 | if (node == NULL) |
| 1300 | return -1; |
| 1301 | |
| 1302 | if (node->n_intrs == 0) |
| 1303 | return -1; |
| 1304 | |
| 1305 | pci_dev->irq = node->intrs[0].line; |
| 1306 | |
| 1307 | pci_write_config_byte(pci_dev, PCI_INTERRUPT_LINE, pci_dev->irq); |
| 1308 | |
| 1309 | return 0; |
| 1310 | } |
| 1311 | EXPORT_SYMBOL(pci_read_irq_line); |
| 1312 | |
Michael Ellerman | 2311b1f | 2005-05-13 17:44:10 +1000 | [diff] [blame] | 1313 | void pci_resource_to_user(const struct pci_dev *dev, int bar, |
| 1314 | const struct resource *rsrc, |
| 1315 | u64 *start, u64 *end) |
| 1316 | { |
| 1317 | struct pci_controller *hose = pci_bus_to_host(dev->bus); |
| 1318 | unsigned long offset = 0; |
| 1319 | |
| 1320 | if (hose == NULL) |
| 1321 | return; |
| 1322 | |
| 1323 | if (rsrc->flags & IORESOURCE_IO) |
| 1324 | offset = pci_io_base - (unsigned long)hose->io_base_virt + |
| 1325 | hose->io_base_phys; |
| 1326 | |
| 1327 | *start = rsrc->start + offset; |
| 1328 | *end = rsrc->end + offset; |
| 1329 | } |
| 1330 | |
Benjamin Herrenschmidt | 463ce0e | 2005-11-23 17:56:06 +1100 | [diff] [blame] | 1331 | struct pci_controller* pci_find_hose_for_OF_device(struct device_node* node) |
| 1332 | { |
| 1333 | if (!have_of) |
| 1334 | return NULL; |
| 1335 | while(node) { |
| 1336 | struct pci_controller *hose, *tmp; |
| 1337 | list_for_each_entry_safe(hose, tmp, &hose_list, list_node) |
| 1338 | if (hose->arch_data == node) |
| 1339 | return hose; |
| 1340 | node = node->parent; |
| 1341 | } |
| 1342 | return NULL; |
| 1343 | } |
| 1344 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1345 | #endif /* CONFIG_PPC_MULTIPLATFORM */ |
Paul Mackerras | b2ad7b5 | 2005-09-09 23:02:36 +1000 | [diff] [blame] | 1346 | |
Benjamin Herrenschmidt | f2c4583 | 2005-12-15 15:00:57 +1100 | [diff] [blame] | 1347 | unsigned long pci_address_to_pio(phys_addr_t address) |
Stephen Rothwell | d4e4b35 | 2005-12-07 13:01:05 +1100 | [diff] [blame] | 1348 | { |
| 1349 | struct pci_controller *hose, *tmp; |
| 1350 | |
| 1351 | list_for_each_entry_safe(hose, tmp, &hose_list, list_node) { |
| 1352 | if (address >= hose->io_base_phys && |
Benjamin Herrenschmidt | f2c4583 | 2005-12-15 15:00:57 +1100 | [diff] [blame] | 1353 | address < (hose->io_base_phys + hose->pci_io_size)) { |
| 1354 | unsigned long base = |
| 1355 | (unsigned long)hose->io_base_virt - pci_io_base; |
| 1356 | return base + (address - hose->io_base_phys); |
| 1357 | } |
Stephen Rothwell | d4e4b35 | 2005-12-07 13:01:05 +1100 | [diff] [blame] | 1358 | } |
| 1359 | return (unsigned int)-1; |
| 1360 | } |
| 1361 | EXPORT_SYMBOL_GPL(pci_address_to_pio); |
| 1362 | |
Paul Mackerras | b2ad7b5 | 2005-09-09 23:02:36 +1000 | [diff] [blame] | 1363 | |
| 1364 | #define IOBASE_BRIDGE_NUMBER 0 |
| 1365 | #define IOBASE_MEMORY 1 |
| 1366 | #define IOBASE_IO 2 |
| 1367 | #define IOBASE_ISA_IO 3 |
| 1368 | #define IOBASE_ISA_MEM 4 |
| 1369 | |
| 1370 | long sys_pciconfig_iobase(long which, unsigned long in_bus, |
| 1371 | unsigned long in_devfn) |
| 1372 | { |
| 1373 | struct pci_controller* hose; |
| 1374 | struct list_head *ln; |
| 1375 | struct pci_bus *bus = NULL; |
| 1376 | struct device_node *hose_node; |
| 1377 | |
| 1378 | /* Argh ! Please forgive me for that hack, but that's the |
| 1379 | * simplest way to get existing XFree to not lockup on some |
| 1380 | * G5 machines... So when something asks for bus 0 io base |
| 1381 | * (bus 0 is HT root), we return the AGP one instead. |
| 1382 | */ |
Paul Mackerras | 799d604 | 2005-11-10 13:37:51 +1100 | [diff] [blame] | 1383 | if (machine_is_compatible("MacRISC4")) |
Paul Mackerras | b2ad7b5 | 2005-09-09 23:02:36 +1000 | [diff] [blame] | 1384 | if (in_bus == 0) |
| 1385 | in_bus = 0xf0; |
Paul Mackerras | b2ad7b5 | 2005-09-09 23:02:36 +1000 | [diff] [blame] | 1386 | |
| 1387 | /* That syscall isn't quite compatible with PCI domains, but it's |
| 1388 | * used on pre-domains setup. We return the first match |
| 1389 | */ |
| 1390 | |
| 1391 | for (ln = pci_root_buses.next; ln != &pci_root_buses; ln = ln->next) { |
| 1392 | bus = pci_bus_b(ln); |
| 1393 | if (in_bus >= bus->number && in_bus < (bus->number + bus->subordinate)) |
| 1394 | break; |
| 1395 | bus = NULL; |
| 1396 | } |
| 1397 | if (bus == NULL || bus->sysdata == NULL) |
| 1398 | return -ENODEV; |
| 1399 | |
| 1400 | hose_node = (struct device_node *)bus->sysdata; |
| 1401 | hose = PCI_DN(hose_node)->phb; |
| 1402 | |
| 1403 | switch (which) { |
| 1404 | case IOBASE_BRIDGE_NUMBER: |
| 1405 | return (long)hose->first_busno; |
| 1406 | case IOBASE_MEMORY: |
| 1407 | return (long)hose->pci_mem_offset; |
| 1408 | case IOBASE_IO: |
| 1409 | return (long)hose->io_base_phys; |
| 1410 | case IOBASE_ISA_IO: |
| 1411 | return (long)isa_io_base; |
| 1412 | case IOBASE_ISA_MEM: |
| 1413 | return -EINVAL; |
| 1414 | } |
| 1415 | |
| 1416 | return -EOPNOTSUPP; |
| 1417 | } |
Anton Blanchard | 357518f | 2006-06-10 20:53:06 +1000 | [diff] [blame] | 1418 | |
| 1419 | #ifdef CONFIG_NUMA |
| 1420 | int pcibus_to_node(struct pci_bus *bus) |
| 1421 | { |
| 1422 | struct pci_controller *phb = pci_bus_to_host(bus); |
| 1423 | return phb->node; |
| 1424 | } |
| 1425 | EXPORT_SYMBOL(pcibus_to_node); |
| 1426 | #endif |