1fb9aa6f1SThomas Gleixner /* 2fb9aa6f1SThomas Gleixner * Low-Level PCI Support for PC 3fb9aa6f1SThomas Gleixner * 4fb9aa6f1SThomas Gleixner * (c) 1999--2000 Martin Mares <mj@ucw.cz> 5fb9aa6f1SThomas Gleixner */ 6fb9aa6f1SThomas Gleixner 7fb9aa6f1SThomas Gleixner #include <linux/sched.h> 8fb9aa6f1SThomas Gleixner #include <linux/pci.h> 9fb9aa6f1SThomas Gleixner #include <linux/ioport.h> 10fb9aa6f1SThomas Gleixner #include <linux/init.h> 11fb9aa6f1SThomas Gleixner #include <linux/dmi.h> 125a0e3ad6STejun Heo #include <linux/slab.h> 13fb9aa6f1SThomas Gleixner 14284f5f9dSBjorn Helgaas #include <asm-generic/pci-bridge.h> 15fb9aa6f1SThomas Gleixner #include <asm/acpi.h> 16fb9aa6f1SThomas Gleixner #include <asm/segment.h> 17fb9aa6f1SThomas Gleixner #include <asm/io.h> 18fb9aa6f1SThomas Gleixner #include <asm/smp.h> 1982487711SJaswinder Singh Rajput #include <asm/pci_x86.h> 20fb9aa6f1SThomas Gleixner 21fb9aa6f1SThomas Gleixner unsigned int pci_probe = PCI_PROBE_BIOS | PCI_PROBE_CONF1 | PCI_PROBE_CONF2 | 22fb9aa6f1SThomas Gleixner PCI_PROBE_MMCONF; 23fb9aa6f1SThomas Gleixner 24e3f2baebSYinghai Lu unsigned int pci_early_dump_regs; 25fb9aa6f1SThomas Gleixner static int pci_bf_sort; 266e8af08dSNarendra_K@Dell.com static int smbios_type_b1_flag; 27fb9aa6f1SThomas Gleixner int pci_routeirq; 28a9322f64SStefan Assmann int noioapicquirk; 2941b9eb26SStefan Assmann #ifdef CONFIG_X86_REROUTE_FOR_BROKEN_BOOT_IRQS 3041b9eb26SStefan Assmann int noioapicreroute = 0; 3141b9eb26SStefan Assmann #else 329197979bSStefan Assmann int noioapicreroute = 1; 3341b9eb26SStefan Assmann #endif 34fb9aa6f1SThomas Gleixner int pcibios_last_bus = -1; 35fb9aa6f1SThomas Gleixner unsigned long pirq_table_addr; 36fb9aa6f1SThomas Gleixner struct pci_bus *pci_root_bus; 3772da0b07SJan Beulich const struct pci_raw_ops *__read_mostly raw_pci_ops; 3872da0b07SJan Beulich const struct pci_raw_ops *__read_mostly raw_pci_ext_ops; 39b6ce068aSMatthew Wilcox 40b6ce068aSMatthew Wilcox int raw_pci_read(unsigned int domain, unsigned int bus, unsigned int devfn, 41b6ce068aSMatthew Wilcox int reg, int len, u32 *val) 42b6ce068aSMatthew Wilcox { 43beef3129SMatthew Wilcox if (domain == 0 && reg < 256 && raw_pci_ops) 44b6ce068aSMatthew Wilcox return raw_pci_ops->read(domain, bus, devfn, reg, len, val); 45b6ce068aSMatthew Wilcox if (raw_pci_ext_ops) 46b6ce068aSMatthew Wilcox return raw_pci_ext_ops->read(domain, bus, devfn, reg, len, val); 47b6ce068aSMatthew Wilcox return -EINVAL; 48b6ce068aSMatthew Wilcox } 49b6ce068aSMatthew Wilcox 50b6ce068aSMatthew Wilcox int raw_pci_write(unsigned int domain, unsigned int bus, unsigned int devfn, 51b6ce068aSMatthew Wilcox int reg, int len, u32 val) 52b6ce068aSMatthew Wilcox { 53beef3129SMatthew Wilcox if (domain == 0 && reg < 256 && raw_pci_ops) 54b6ce068aSMatthew Wilcox return raw_pci_ops->write(domain, bus, devfn, reg, len, val); 55b6ce068aSMatthew Wilcox if (raw_pci_ext_ops) 56b6ce068aSMatthew Wilcox return raw_pci_ext_ops->write(domain, bus, devfn, reg, len, val); 57b6ce068aSMatthew Wilcox return -EINVAL; 58b6ce068aSMatthew Wilcox } 59fb9aa6f1SThomas Gleixner 60fb9aa6f1SThomas Gleixner static int pci_read(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *value) 61fb9aa6f1SThomas Gleixner { 62b6ce068aSMatthew Wilcox return raw_pci_read(pci_domain_nr(bus), bus->number, 63a79e4198SJeff Garzik devfn, where, size, value); 64fb9aa6f1SThomas Gleixner } 65fb9aa6f1SThomas Gleixner 66fb9aa6f1SThomas Gleixner static int pci_write(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 value) 67fb9aa6f1SThomas Gleixner { 68b6ce068aSMatthew Wilcox return raw_pci_write(pci_domain_nr(bus), bus->number, 69a79e4198SJeff Garzik devfn, where, size, value); 70fb9aa6f1SThomas Gleixner } 71fb9aa6f1SThomas Gleixner 72fb9aa6f1SThomas Gleixner struct pci_ops pci_root_ops = { 73fb9aa6f1SThomas Gleixner .read = pci_read, 74fb9aa6f1SThomas Gleixner .write = pci_write, 75fb9aa6f1SThomas Gleixner }; 76fb9aa6f1SThomas Gleixner 77fb9aa6f1SThomas Gleixner /* 78fb9aa6f1SThomas Gleixner * This interrupt-safe spinlock protects all accesses to PCI 79fb9aa6f1SThomas Gleixner * configuration space. 80fb9aa6f1SThomas Gleixner */ 81d19f61f0SThomas Gleixner DEFINE_RAW_SPINLOCK(pci_config_lock); 82fb9aa6f1SThomas Gleixner 8313a6ddb0SYinghai Lu static int __devinit can_skip_ioresource_align(const struct dmi_system_id *d) 8413a6ddb0SYinghai Lu { 8513a6ddb0SYinghai Lu pci_probe |= PCI_CAN_SKIP_ISA_ALIGN; 8613a6ddb0SYinghai Lu printk(KERN_INFO "PCI: %s detected, can skip ISA alignment\n", d->ident); 8713a6ddb0SYinghai Lu return 0; 8813a6ddb0SYinghai Lu } 8913a6ddb0SYinghai Lu 90821508d4SJan Beulich static const struct dmi_system_id can_skip_pciprobe_dmi_table[] __devinitconst = { 9113a6ddb0SYinghai Lu /* 9213a6ddb0SYinghai Lu * Systems where PCI IO resource ISA alignment can be skipped 9313a6ddb0SYinghai Lu * when the ISA enable bit in the bridge control is not set 9413a6ddb0SYinghai Lu */ 9513a6ddb0SYinghai Lu { 9613a6ddb0SYinghai Lu .callback = can_skip_ioresource_align, 9713a6ddb0SYinghai Lu .ident = "IBM System x3800", 9813a6ddb0SYinghai Lu .matches = { 9913a6ddb0SYinghai Lu DMI_MATCH(DMI_SYS_VENDOR, "IBM"), 10013a6ddb0SYinghai Lu DMI_MATCH(DMI_PRODUCT_NAME, "x3800"), 10113a6ddb0SYinghai Lu }, 10213a6ddb0SYinghai Lu }, 10313a6ddb0SYinghai Lu { 10413a6ddb0SYinghai Lu .callback = can_skip_ioresource_align, 10513a6ddb0SYinghai Lu .ident = "IBM System x3850", 10613a6ddb0SYinghai Lu .matches = { 10713a6ddb0SYinghai Lu DMI_MATCH(DMI_SYS_VENDOR, "IBM"), 10813a6ddb0SYinghai Lu DMI_MATCH(DMI_PRODUCT_NAME, "x3850"), 10913a6ddb0SYinghai Lu }, 11013a6ddb0SYinghai Lu }, 11113a6ddb0SYinghai Lu { 11213a6ddb0SYinghai Lu .callback = can_skip_ioresource_align, 11313a6ddb0SYinghai Lu .ident = "IBM System x3950", 11413a6ddb0SYinghai Lu .matches = { 11513a6ddb0SYinghai Lu DMI_MATCH(DMI_SYS_VENDOR, "IBM"), 11613a6ddb0SYinghai Lu DMI_MATCH(DMI_PRODUCT_NAME, "x3950"), 11713a6ddb0SYinghai Lu }, 11813a6ddb0SYinghai Lu }, 11913a6ddb0SYinghai Lu {} 12013a6ddb0SYinghai Lu }; 12113a6ddb0SYinghai Lu 12213a6ddb0SYinghai Lu void __init dmi_check_skip_isa_align(void) 12313a6ddb0SYinghai Lu { 12413a6ddb0SYinghai Lu dmi_check_system(can_skip_pciprobe_dmi_table); 12513a6ddb0SYinghai Lu } 12613a6ddb0SYinghai Lu 127bb71ad88SGary Hade static void __devinit pcibios_fixup_device_resources(struct pci_dev *dev) 128bb71ad88SGary Hade { 129bb71ad88SGary Hade struct resource *rom_r = &dev->resource[PCI_ROM_RESOURCE]; 1307bd1c365SMike Habeck struct resource *bar_r; 1317bd1c365SMike Habeck int bar; 1327bd1c365SMike Habeck 1337bd1c365SMike Habeck if (pci_probe & PCI_NOASSIGN_BARS) { 1347bd1c365SMike Habeck /* 1357bd1c365SMike Habeck * If the BIOS did not assign the BAR, zero out the 1367bd1c365SMike Habeck * resource so the kernel doesn't attmept to assign 1377bd1c365SMike Habeck * it later on in pci_assign_unassigned_resources 1387bd1c365SMike Habeck */ 1397bd1c365SMike Habeck for (bar = 0; bar <= PCI_STD_RESOURCE_END; bar++) { 1407bd1c365SMike Habeck bar_r = &dev->resource[bar]; 1417bd1c365SMike Habeck if (bar_r->start == 0 && bar_r->end != 0) { 1427bd1c365SMike Habeck bar_r->flags = 0; 1437bd1c365SMike Habeck bar_r->end = 0; 1447bd1c365SMike Habeck } 1457bd1c365SMike Habeck } 1467bd1c365SMike Habeck } 147bb71ad88SGary Hade 148bb71ad88SGary Hade if (pci_probe & PCI_NOASSIGN_ROMS) { 149bb71ad88SGary Hade if (rom_r->parent) 150bb71ad88SGary Hade return; 151bb71ad88SGary Hade if (rom_r->start) { 152bb71ad88SGary Hade /* we deal with BIOS assigned ROM later */ 153bb71ad88SGary Hade return; 154bb71ad88SGary Hade } 155bb71ad88SGary Hade rom_r->start = rom_r->end = rom_r->flags = 0; 156bb71ad88SGary Hade } 157bb71ad88SGary Hade } 158bb71ad88SGary Hade 159fb9aa6f1SThomas Gleixner /* 160fb9aa6f1SThomas Gleixner * Called after each bus is probed, but before its children 161fb9aa6f1SThomas Gleixner * are examined. 162fb9aa6f1SThomas Gleixner */ 163fb9aa6f1SThomas Gleixner 164fb9aa6f1SThomas Gleixner void __devinit pcibios_fixup_bus(struct pci_bus *b) 165fb9aa6f1SThomas Gleixner { 166bb71ad88SGary Hade struct pci_dev *dev; 167bb71ad88SGary Hade 168fb9aa6f1SThomas Gleixner pci_read_bridge_bases(b); 169bb71ad88SGary Hade list_for_each_entry(dev, &b->devices, bus_list) 170bb71ad88SGary Hade pcibios_fixup_device_resources(dev); 171fb9aa6f1SThomas Gleixner } 172fb9aa6f1SThomas Gleixner 173fb9aa6f1SThomas Gleixner /* 174fb9aa6f1SThomas Gleixner * Only use DMI information to set this if nothing was passed 175fb9aa6f1SThomas Gleixner * on the kernel command line (which was parsed earlier). 176fb9aa6f1SThomas Gleixner */ 177fb9aa6f1SThomas Gleixner 17819ad7ae4SLinus Torvalds static int __devinit set_bf_sort(const struct dmi_system_id *d) 179fb9aa6f1SThomas Gleixner { 180fb9aa6f1SThomas Gleixner if (pci_bf_sort == pci_bf_sort_default) { 181fb9aa6f1SThomas Gleixner pci_bf_sort = pci_dmi_bf; 182fb9aa6f1SThomas Gleixner printk(KERN_INFO "PCI: %s detected, enabling pci=bfsort.\n", d->ident); 183fb9aa6f1SThomas Gleixner } 184fb9aa6f1SThomas Gleixner return 0; 185fb9aa6f1SThomas Gleixner } 186fb9aa6f1SThomas Gleixner 1876e8af08dSNarendra_K@Dell.com static void __devinit read_dmi_type_b1(const struct dmi_header *dm, 1886e8af08dSNarendra_K@Dell.com void *private_data) 1896e8af08dSNarendra_K@Dell.com { 1906e8af08dSNarendra_K@Dell.com u8 *d = (u8 *)dm + 4; 1916e8af08dSNarendra_K@Dell.com 1926e8af08dSNarendra_K@Dell.com if (dm->type != 0xB1) 1936e8af08dSNarendra_K@Dell.com return; 1946e8af08dSNarendra_K@Dell.com switch (((*(u32 *)d) >> 9) & 0x03) { 1956e8af08dSNarendra_K@Dell.com case 0x00: 1966e8af08dSNarendra_K@Dell.com printk(KERN_INFO "dmi type 0xB1 record - unknown flag\n"); 1976e8af08dSNarendra_K@Dell.com break; 1986e8af08dSNarendra_K@Dell.com case 0x01: /* set pci=bfsort */ 1996e8af08dSNarendra_K@Dell.com smbios_type_b1_flag = 1; 2006e8af08dSNarendra_K@Dell.com break; 2016e8af08dSNarendra_K@Dell.com case 0x02: /* do not set pci=bfsort */ 2026e8af08dSNarendra_K@Dell.com smbios_type_b1_flag = 2; 2036e8af08dSNarendra_K@Dell.com break; 2046e8af08dSNarendra_K@Dell.com default: 2056e8af08dSNarendra_K@Dell.com break; 2066e8af08dSNarendra_K@Dell.com } 2076e8af08dSNarendra_K@Dell.com } 2086e8af08dSNarendra_K@Dell.com 2096e8af08dSNarendra_K@Dell.com static int __devinit find_sort_method(const struct dmi_system_id *d) 2106e8af08dSNarendra_K@Dell.com { 2116e8af08dSNarendra_K@Dell.com dmi_walk(read_dmi_type_b1, NULL); 2126e8af08dSNarendra_K@Dell.com 2136e8af08dSNarendra_K@Dell.com if (smbios_type_b1_flag == 1) { 2146e8af08dSNarendra_K@Dell.com set_bf_sort(d); 2156e8af08dSNarendra_K@Dell.com return 0; 2166e8af08dSNarendra_K@Dell.com } 2176e8af08dSNarendra_K@Dell.com return -1; 2186e8af08dSNarendra_K@Dell.com } 2196e8af08dSNarendra_K@Dell.com 220fb9aa6f1SThomas Gleixner /* 221fb9aa6f1SThomas Gleixner * Enable renumbering of PCI bus# ranges to reach all PCI busses (Cardbus) 222fb9aa6f1SThomas Gleixner */ 223fb9aa6f1SThomas Gleixner #ifdef __i386__ 22419ad7ae4SLinus Torvalds static int __devinit assign_all_busses(const struct dmi_system_id *d) 225fb9aa6f1SThomas Gleixner { 226fb9aa6f1SThomas Gleixner pci_probe |= PCI_ASSIGN_ALL_BUSSES; 227fb9aa6f1SThomas Gleixner printk(KERN_INFO "%s detected: enabling PCI bus# renumbering" 228fb9aa6f1SThomas Gleixner " (pci=assign-busses)\n", d->ident); 229fb9aa6f1SThomas Gleixner return 0; 230fb9aa6f1SThomas Gleixner } 231fb9aa6f1SThomas Gleixner #endif 232fb9aa6f1SThomas Gleixner 233284f5f9dSBjorn Helgaas static int __devinit set_scan_all(const struct dmi_system_id *d) 234284f5f9dSBjorn Helgaas { 235284f5f9dSBjorn Helgaas printk(KERN_INFO "PCI: %s detected, enabling pci=pcie_scan_all\n", 236284f5f9dSBjorn Helgaas d->ident); 237284f5f9dSBjorn Helgaas pci_add_flags(PCI_SCAN_ALL_PCIE_DEVS); 238284f5f9dSBjorn Helgaas return 0; 239284f5f9dSBjorn Helgaas } 240284f5f9dSBjorn Helgaas 241821508d4SJan Beulich static const struct dmi_system_id __devinitconst pciprobe_dmi_table[] = { 242fb9aa6f1SThomas Gleixner #ifdef __i386__ 243fb9aa6f1SThomas Gleixner /* 244fb9aa6f1SThomas Gleixner * Laptops which need pci=assign-busses to see Cardbus cards 245fb9aa6f1SThomas Gleixner */ 246fb9aa6f1SThomas Gleixner { 247fb9aa6f1SThomas Gleixner .callback = assign_all_busses, 248fb9aa6f1SThomas Gleixner .ident = "Samsung X20 Laptop", 249fb9aa6f1SThomas Gleixner .matches = { 250fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_SYS_VENDOR, "Samsung Electronics"), 251fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_PRODUCT_NAME, "SX20S"), 252fb9aa6f1SThomas Gleixner }, 253fb9aa6f1SThomas Gleixner }, 254fb9aa6f1SThomas Gleixner #endif /* __i386__ */ 255fb9aa6f1SThomas Gleixner { 256fb9aa6f1SThomas Gleixner .callback = set_bf_sort, 257fb9aa6f1SThomas Gleixner .ident = "Dell PowerEdge 1950", 258fb9aa6f1SThomas Gleixner .matches = { 259fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_SYS_VENDOR, "Dell"), 260fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge 1950"), 261fb9aa6f1SThomas Gleixner }, 262fb9aa6f1SThomas Gleixner }, 263fb9aa6f1SThomas Gleixner { 264fb9aa6f1SThomas Gleixner .callback = set_bf_sort, 265fb9aa6f1SThomas Gleixner .ident = "Dell PowerEdge 1955", 266fb9aa6f1SThomas Gleixner .matches = { 267fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_SYS_VENDOR, "Dell"), 268fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge 1955"), 269fb9aa6f1SThomas Gleixner }, 270fb9aa6f1SThomas Gleixner }, 271fb9aa6f1SThomas Gleixner { 272fb9aa6f1SThomas Gleixner .callback = set_bf_sort, 273fb9aa6f1SThomas Gleixner .ident = "Dell PowerEdge 2900", 274fb9aa6f1SThomas Gleixner .matches = { 275fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_SYS_VENDOR, "Dell"), 276fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge 2900"), 277fb9aa6f1SThomas Gleixner }, 278fb9aa6f1SThomas Gleixner }, 279fb9aa6f1SThomas Gleixner { 280fb9aa6f1SThomas Gleixner .callback = set_bf_sort, 281fb9aa6f1SThomas Gleixner .ident = "Dell PowerEdge 2950", 282fb9aa6f1SThomas Gleixner .matches = { 283fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_SYS_VENDOR, "Dell"), 284fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge 2950"), 285fb9aa6f1SThomas Gleixner }, 286fb9aa6f1SThomas Gleixner }, 287fb9aa6f1SThomas Gleixner { 288fb9aa6f1SThomas Gleixner .callback = set_bf_sort, 289fb9aa6f1SThomas Gleixner .ident = "Dell PowerEdge R900", 290fb9aa6f1SThomas Gleixner .matches = { 291fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_SYS_VENDOR, "Dell"), 292fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge R900"), 293fb9aa6f1SThomas Gleixner }, 294fb9aa6f1SThomas Gleixner }, 295fb9aa6f1SThomas Gleixner { 2969b373ed1SNarendra_K@Dell.com .callback = find_sort_method, 2979b373ed1SNarendra_K@Dell.com .ident = "Dell System", 2989b373ed1SNarendra_K@Dell.com .matches = { 2999b373ed1SNarendra_K@Dell.com DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc"), 3009b373ed1SNarendra_K@Dell.com }, 3019b373ed1SNarendra_K@Dell.com }, 3029b373ed1SNarendra_K@Dell.com { 303fb9aa6f1SThomas Gleixner .callback = set_bf_sort, 304fb9aa6f1SThomas Gleixner .ident = "HP ProLiant BL20p G3", 305fb9aa6f1SThomas Gleixner .matches = { 306fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_SYS_VENDOR, "HP"), 307fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL20p G3"), 308fb9aa6f1SThomas Gleixner }, 309fb9aa6f1SThomas Gleixner }, 310fb9aa6f1SThomas Gleixner { 311fb9aa6f1SThomas Gleixner .callback = set_bf_sort, 312fb9aa6f1SThomas Gleixner .ident = "HP ProLiant BL20p G4", 313fb9aa6f1SThomas Gleixner .matches = { 314fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_SYS_VENDOR, "HP"), 315fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL20p G4"), 316fb9aa6f1SThomas Gleixner }, 317fb9aa6f1SThomas Gleixner }, 318fb9aa6f1SThomas Gleixner { 319fb9aa6f1SThomas Gleixner .callback = set_bf_sort, 320fb9aa6f1SThomas Gleixner .ident = "HP ProLiant BL30p G1", 321fb9aa6f1SThomas Gleixner .matches = { 322fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_SYS_VENDOR, "HP"), 323fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL30p G1"), 324fb9aa6f1SThomas Gleixner }, 325fb9aa6f1SThomas Gleixner }, 326fb9aa6f1SThomas Gleixner { 327fb9aa6f1SThomas Gleixner .callback = set_bf_sort, 328fb9aa6f1SThomas Gleixner .ident = "HP ProLiant BL25p G1", 329fb9aa6f1SThomas Gleixner .matches = { 330fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_SYS_VENDOR, "HP"), 331fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL25p G1"), 332fb9aa6f1SThomas Gleixner }, 333fb9aa6f1SThomas Gleixner }, 334fb9aa6f1SThomas Gleixner { 335fb9aa6f1SThomas Gleixner .callback = set_bf_sort, 336fb9aa6f1SThomas Gleixner .ident = "HP ProLiant BL35p G1", 337fb9aa6f1SThomas Gleixner .matches = { 338fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_SYS_VENDOR, "HP"), 339fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL35p G1"), 340fb9aa6f1SThomas Gleixner }, 341fb9aa6f1SThomas Gleixner }, 342fb9aa6f1SThomas Gleixner { 343fb9aa6f1SThomas Gleixner .callback = set_bf_sort, 344fb9aa6f1SThomas Gleixner .ident = "HP ProLiant BL45p G1", 345fb9aa6f1SThomas Gleixner .matches = { 346fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_SYS_VENDOR, "HP"), 347fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL45p G1"), 348fb9aa6f1SThomas Gleixner }, 349fb9aa6f1SThomas Gleixner }, 350fb9aa6f1SThomas Gleixner { 351fb9aa6f1SThomas Gleixner .callback = set_bf_sort, 352fb9aa6f1SThomas Gleixner .ident = "HP ProLiant BL45p G2", 353fb9aa6f1SThomas Gleixner .matches = { 354fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_SYS_VENDOR, "HP"), 355fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL45p G2"), 356fb9aa6f1SThomas Gleixner }, 357fb9aa6f1SThomas Gleixner }, 358fb9aa6f1SThomas Gleixner { 359fb9aa6f1SThomas Gleixner .callback = set_bf_sort, 360fb9aa6f1SThomas Gleixner .ident = "HP ProLiant BL460c G1", 361fb9aa6f1SThomas Gleixner .matches = { 362fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_SYS_VENDOR, "HP"), 363fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL460c G1"), 364fb9aa6f1SThomas Gleixner }, 365fb9aa6f1SThomas Gleixner }, 366fb9aa6f1SThomas Gleixner { 367fb9aa6f1SThomas Gleixner .callback = set_bf_sort, 368fb9aa6f1SThomas Gleixner .ident = "HP ProLiant BL465c G1", 369fb9aa6f1SThomas Gleixner .matches = { 370fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_SYS_VENDOR, "HP"), 371fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL465c G1"), 372fb9aa6f1SThomas Gleixner }, 373fb9aa6f1SThomas Gleixner }, 374fb9aa6f1SThomas Gleixner { 375fb9aa6f1SThomas Gleixner .callback = set_bf_sort, 376fb9aa6f1SThomas Gleixner .ident = "HP ProLiant BL480c G1", 377fb9aa6f1SThomas Gleixner .matches = { 378fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_SYS_VENDOR, "HP"), 379fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL480c G1"), 380fb9aa6f1SThomas Gleixner }, 381fb9aa6f1SThomas Gleixner }, 382fb9aa6f1SThomas Gleixner { 383fb9aa6f1SThomas Gleixner .callback = set_bf_sort, 384fb9aa6f1SThomas Gleixner .ident = "HP ProLiant BL685c G1", 385fb9aa6f1SThomas Gleixner .matches = { 386fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_SYS_VENDOR, "HP"), 387fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL685c G1"), 388fb9aa6f1SThomas Gleixner }, 389fb9aa6f1SThomas Gleixner }, 3908f8ae1a7SMichal Schmidt { 3918f8ae1a7SMichal Schmidt .callback = set_bf_sort, 3928d64c781STony Camuso .ident = "HP ProLiant DL360", 3938f8ae1a7SMichal Schmidt .matches = { 3948f8ae1a7SMichal Schmidt DMI_MATCH(DMI_SYS_VENDOR, "HP"), 3958d64c781STony Camuso DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant DL360"), 3968f8ae1a7SMichal Schmidt }, 3978f8ae1a7SMichal Schmidt }, 3988f8ae1a7SMichal Schmidt { 3998f8ae1a7SMichal Schmidt .callback = set_bf_sort, 4008d64c781STony Camuso .ident = "HP ProLiant DL380", 4018f8ae1a7SMichal Schmidt .matches = { 4028f8ae1a7SMichal Schmidt DMI_MATCH(DMI_SYS_VENDOR, "HP"), 4038d64c781STony Camuso DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant DL380"), 4048f8ae1a7SMichal Schmidt }, 4058f8ae1a7SMichal Schmidt }, 4065b1ea82fSJuha Laiho #ifdef __i386__ 4075b1ea82fSJuha Laiho { 4085b1ea82fSJuha Laiho .callback = assign_all_busses, 4095b1ea82fSJuha Laiho .ident = "Compaq EVO N800c", 4105b1ea82fSJuha Laiho .matches = { 4115b1ea82fSJuha Laiho DMI_MATCH(DMI_SYS_VENDOR, "Compaq"), 4125b1ea82fSJuha Laiho DMI_MATCH(DMI_PRODUCT_NAME, "EVO N800c"), 4135b1ea82fSJuha Laiho }, 4145b1ea82fSJuha Laiho }, 4155b1ea82fSJuha Laiho #endif 416c82bc5adSMichal Schmidt { 417c82bc5adSMichal Schmidt .callback = set_bf_sort, 418739db07fSJesse Barnes .ident = "HP ProLiant DL385 G2", 419c82bc5adSMichal Schmidt .matches = { 420c82bc5adSMichal Schmidt DMI_MATCH(DMI_SYS_VENDOR, "HP"), 421739db07fSJesse Barnes DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant DL385 G2"), 422c82bc5adSMichal Schmidt }, 423c82bc5adSMichal Schmidt }, 424c82bc5adSMichal Schmidt { 425c82bc5adSMichal Schmidt .callback = set_bf_sort, 426739db07fSJesse Barnes .ident = "HP ProLiant DL585 G2", 427c82bc5adSMichal Schmidt .matches = { 428c82bc5adSMichal Schmidt DMI_MATCH(DMI_SYS_VENDOR, "HP"), 429739db07fSJesse Barnes DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant DL585 G2"), 430c82bc5adSMichal Schmidt }, 431c82bc5adSMichal Schmidt }, 432284f5f9dSBjorn Helgaas { 433284f5f9dSBjorn Helgaas .callback = set_scan_all, 434284f5f9dSBjorn Helgaas .ident = "Stratus/NEC ftServer", 435284f5f9dSBjorn Helgaas .matches = { 436284f5f9dSBjorn Helgaas DMI_MATCH(DMI_SYS_VENDOR, "ftServer"), 437284f5f9dSBjorn Helgaas }, 438284f5f9dSBjorn Helgaas }, 439fb9aa6f1SThomas Gleixner {} 440fb9aa6f1SThomas Gleixner }; 441fb9aa6f1SThomas Gleixner 4420df18ff3SYinghai Lu void __init dmi_check_pciprobe(void) 4430df18ff3SYinghai Lu { 4440df18ff3SYinghai Lu dmi_check_system(pciprobe_dmi_table); 4450df18ff3SYinghai Lu } 4460df18ff3SYinghai Lu 447fb9aa6f1SThomas Gleixner struct pci_bus * __devinit pcibios_scan_root(int busnum) 448fb9aa6f1SThomas Gleixner { 449fb9aa6f1SThomas Gleixner struct pci_bus *bus = NULL; 450fb9aa6f1SThomas Gleixner 451fb9aa6f1SThomas Gleixner while ((bus = pci_find_next_bus(bus)) != NULL) { 452fb9aa6f1SThomas Gleixner if (bus->number == busnum) { 453fb9aa6f1SThomas Gleixner /* Already scanned */ 454fb9aa6f1SThomas Gleixner return bus; 455fb9aa6f1SThomas Gleixner } 456fb9aa6f1SThomas Gleixner } 457fb9aa6f1SThomas Gleixner 458c57ca65aSYinghai Lu return pci_scan_bus_on_node(busnum, &pci_root_ops, 459c57ca65aSYinghai Lu get_mp_bus_to_node(busnum)); 460fb9aa6f1SThomas Gleixner } 461fb9aa6f1SThomas Gleixner 46244de3395SAlex Nixon void __init pcibios_set_cache_line_size(void) 463fb9aa6f1SThomas Gleixner { 464fb9aa6f1SThomas Gleixner struct cpuinfo_x86 *c = &boot_cpu_data; 465fb9aa6f1SThomas Gleixner 466fb9aa6f1SThomas Gleixner /* 46776b1a87bSDave Jones * Set PCI cacheline size to that of the CPU if the CPU has reported it. 46876b1a87bSDave Jones * (For older CPUs that don't support cpuid, we se it to 32 bytes 46976b1a87bSDave Jones * It's also good for 386/486s (which actually have 16) 470fb9aa6f1SThomas Gleixner * as quite a few PCI devices do not support smaller values. 471fb9aa6f1SThomas Gleixner */ 47276b1a87bSDave Jones if (c->x86_clflush_size > 0) { 47376b1a87bSDave Jones pci_dfl_cache_line_size = c->x86_clflush_size >> 2; 47476b1a87bSDave Jones printk(KERN_DEBUG "PCI: pci_cache_line_size set to %d bytes\n", 47576b1a87bSDave Jones pci_dfl_cache_line_size << 2); 47676b1a87bSDave Jones } else { 477ac1aa47bSJesse Barnes pci_dfl_cache_line_size = 32 >> 2; 47876b1a87bSDave Jones printk(KERN_DEBUG "PCI: Unknown cacheline size. Setting to 32 bytes\n"); 47976b1a87bSDave Jones } 48044de3395SAlex Nixon } 481fb9aa6f1SThomas Gleixner 48244de3395SAlex Nixon int __init pcibios_init(void) 48344de3395SAlex Nixon { 48444de3395SAlex Nixon if (!raw_pci_ops) { 48544de3395SAlex Nixon printk(KERN_WARNING "PCI: System does not support PCI\n"); 48644de3395SAlex Nixon return 0; 48744de3395SAlex Nixon } 48844de3395SAlex Nixon 48944de3395SAlex Nixon pcibios_set_cache_line_size(); 490fb9aa6f1SThomas Gleixner pcibios_resource_survey(); 491fb9aa6f1SThomas Gleixner 492fb9aa6f1SThomas Gleixner if (pci_bf_sort >= pci_force_bf) 493fb9aa6f1SThomas Gleixner pci_sort_breadthfirst(); 494fb9aa6f1SThomas Gleixner return 0; 495fb9aa6f1SThomas Gleixner } 496fb9aa6f1SThomas Gleixner 49715fa325bSMyron Stowe char * __init pcibios_setup(char *str) 498fb9aa6f1SThomas Gleixner { 499fb9aa6f1SThomas Gleixner if (!strcmp(str, "off")) { 500fb9aa6f1SThomas Gleixner pci_probe = 0; 501fb9aa6f1SThomas Gleixner return NULL; 502fb9aa6f1SThomas Gleixner } else if (!strcmp(str, "bfsort")) { 503fb9aa6f1SThomas Gleixner pci_bf_sort = pci_force_bf; 504fb9aa6f1SThomas Gleixner return NULL; 505fb9aa6f1SThomas Gleixner } else if (!strcmp(str, "nobfsort")) { 506fb9aa6f1SThomas Gleixner pci_bf_sort = pci_force_nobf; 507fb9aa6f1SThomas Gleixner return NULL; 508fb9aa6f1SThomas Gleixner } 509fb9aa6f1SThomas Gleixner #ifdef CONFIG_PCI_BIOS 510fb9aa6f1SThomas Gleixner else if (!strcmp(str, "bios")) { 511fb9aa6f1SThomas Gleixner pci_probe = PCI_PROBE_BIOS; 512fb9aa6f1SThomas Gleixner return NULL; 513fb9aa6f1SThomas Gleixner } else if (!strcmp(str, "nobios")) { 514fb9aa6f1SThomas Gleixner pci_probe &= ~PCI_PROBE_BIOS; 515fb9aa6f1SThomas Gleixner return NULL; 516fb9aa6f1SThomas Gleixner } else if (!strcmp(str, "biosirq")) { 517fb9aa6f1SThomas Gleixner pci_probe |= PCI_BIOS_IRQ_SCAN; 518fb9aa6f1SThomas Gleixner return NULL; 519fb9aa6f1SThomas Gleixner } else if (!strncmp(str, "pirqaddr=", 9)) { 520fb9aa6f1SThomas Gleixner pirq_table_addr = simple_strtoul(str+9, NULL, 0); 521fb9aa6f1SThomas Gleixner return NULL; 522fb9aa6f1SThomas Gleixner } 523fb9aa6f1SThomas Gleixner #endif 524fb9aa6f1SThomas Gleixner #ifdef CONFIG_PCI_DIRECT 525fb9aa6f1SThomas Gleixner else if (!strcmp(str, "conf1")) { 526fb9aa6f1SThomas Gleixner pci_probe = PCI_PROBE_CONF1 | PCI_NO_CHECKS; 527fb9aa6f1SThomas Gleixner return NULL; 528fb9aa6f1SThomas Gleixner } 529fb9aa6f1SThomas Gleixner else if (!strcmp(str, "conf2")) { 530fb9aa6f1SThomas Gleixner pci_probe = PCI_PROBE_CONF2 | PCI_NO_CHECKS; 531fb9aa6f1SThomas Gleixner return NULL; 532fb9aa6f1SThomas Gleixner } 533fb9aa6f1SThomas Gleixner #endif 534fb9aa6f1SThomas Gleixner #ifdef CONFIG_PCI_MMCONFIG 535fb9aa6f1SThomas Gleixner else if (!strcmp(str, "nommconf")) { 536fb9aa6f1SThomas Gleixner pci_probe &= ~PCI_PROBE_MMCONF; 537fb9aa6f1SThomas Gleixner return NULL; 538fb9aa6f1SThomas Gleixner } 5395f0b2976SYinghai Lu else if (!strcmp(str, "check_enable_amd_mmconf")) { 5405f0b2976SYinghai Lu pci_probe |= PCI_CHECK_ENABLE_AMD_MMCONF; 5415f0b2976SYinghai Lu return NULL; 5425f0b2976SYinghai Lu } 543fb9aa6f1SThomas Gleixner #endif 544fb9aa6f1SThomas Gleixner else if (!strcmp(str, "noacpi")) { 545fb9aa6f1SThomas Gleixner acpi_noirq_set(); 546fb9aa6f1SThomas Gleixner return NULL; 547fb9aa6f1SThomas Gleixner } 548fb9aa6f1SThomas Gleixner else if (!strcmp(str, "noearly")) { 549fb9aa6f1SThomas Gleixner pci_probe |= PCI_PROBE_NOEARLY; 550fb9aa6f1SThomas Gleixner return NULL; 551fb9aa6f1SThomas Gleixner } 552fb9aa6f1SThomas Gleixner #ifndef CONFIG_X86_VISWS 553fb9aa6f1SThomas Gleixner else if (!strcmp(str, "usepirqmask")) { 554fb9aa6f1SThomas Gleixner pci_probe |= PCI_USE_PIRQ_MASK; 555fb9aa6f1SThomas Gleixner return NULL; 556fb9aa6f1SThomas Gleixner } else if (!strncmp(str, "irqmask=", 8)) { 557fb9aa6f1SThomas Gleixner pcibios_irq_mask = simple_strtol(str+8, NULL, 0); 558fb9aa6f1SThomas Gleixner return NULL; 559fb9aa6f1SThomas Gleixner } else if (!strncmp(str, "lastbus=", 8)) { 560fb9aa6f1SThomas Gleixner pcibios_last_bus = simple_strtol(str+8, NULL, 0); 561fb9aa6f1SThomas Gleixner return NULL; 562fb9aa6f1SThomas Gleixner } 563fb9aa6f1SThomas Gleixner #endif 564fb9aa6f1SThomas Gleixner else if (!strcmp(str, "rom")) { 565fb9aa6f1SThomas Gleixner pci_probe |= PCI_ASSIGN_ROMS; 566fb9aa6f1SThomas Gleixner return NULL; 567bb71ad88SGary Hade } else if (!strcmp(str, "norom")) { 568bb71ad88SGary Hade pci_probe |= PCI_NOASSIGN_ROMS; 569bb71ad88SGary Hade return NULL; 5707bd1c365SMike Habeck } else if (!strcmp(str, "nobar")) { 5717bd1c365SMike Habeck pci_probe |= PCI_NOASSIGN_BARS; 5727bd1c365SMike Habeck return NULL; 573fb9aa6f1SThomas Gleixner } else if (!strcmp(str, "assign-busses")) { 574fb9aa6f1SThomas Gleixner pci_probe |= PCI_ASSIGN_ALL_BUSSES; 575fb9aa6f1SThomas Gleixner return NULL; 576236e946bSLinus Torvalds } else if (!strcmp(str, "use_crs")) { 577236e946bSLinus Torvalds pci_probe |= PCI_USE__CRS; 57862f420f8SGary Hade return NULL; 5797bc5e3f2SBjorn Helgaas } else if (!strcmp(str, "nocrs")) { 5807bc5e3f2SBjorn Helgaas pci_probe |= PCI_ROOT_NO_CRS; 5817bc5e3f2SBjorn Helgaas return NULL; 582e3f2baebSYinghai Lu } else if (!strcmp(str, "earlydump")) { 583e3f2baebSYinghai Lu pci_early_dump_regs = 1; 584e3f2baebSYinghai Lu return NULL; 585fb9aa6f1SThomas Gleixner } else if (!strcmp(str, "routeirq")) { 586fb9aa6f1SThomas Gleixner pci_routeirq = 1; 587fb9aa6f1SThomas Gleixner return NULL; 58813a6ddb0SYinghai Lu } else if (!strcmp(str, "skip_isa_align")) { 58913a6ddb0SYinghai Lu pci_probe |= PCI_CAN_SKIP_ISA_ALIGN; 59013a6ddb0SYinghai Lu return NULL; 591a9322f64SStefan Assmann } else if (!strcmp(str, "noioapicquirk")) { 592a9322f64SStefan Assmann noioapicquirk = 1; 593a9322f64SStefan Assmann return NULL; 5949197979bSStefan Assmann } else if (!strcmp(str, "ioapicreroute")) { 5959197979bSStefan Assmann if (noioapicreroute != -1) 5969197979bSStefan Assmann noioapicreroute = 0; 5979197979bSStefan Assmann return NULL; 59841b9eb26SStefan Assmann } else if (!strcmp(str, "noioapicreroute")) { 59941b9eb26SStefan Assmann if (noioapicreroute != -1) 60041b9eb26SStefan Assmann noioapicreroute = 1; 60141b9eb26SStefan Assmann return NULL; 602fb9aa6f1SThomas Gleixner } 603fb9aa6f1SThomas Gleixner return str; 604fb9aa6f1SThomas Gleixner } 605fb9aa6f1SThomas Gleixner 606fb9aa6f1SThomas Gleixner unsigned int pcibios_assign_all_busses(void) 607fb9aa6f1SThomas Gleixner { 608fb9aa6f1SThomas Gleixner return (pci_probe & PCI_ASSIGN_ALL_BUSSES) ? 1 : 0; 609fb9aa6f1SThomas Gleixner } 610fb9aa6f1SThomas Gleixner 611fb9aa6f1SThomas Gleixner int pcibios_enable_device(struct pci_dev *dev, int mask) 612fb9aa6f1SThomas Gleixner { 613fb9aa6f1SThomas Gleixner int err; 614fb9aa6f1SThomas Gleixner 615b81d988cSBjorn Helgaas if ((err = pci_enable_resources(dev, mask)) < 0) 616fb9aa6f1SThomas Gleixner return err; 617fb9aa6f1SThomas Gleixner 61816cf0ebcSRafael J. Wysocki if (!pci_dev_msi_enabled(dev)) 619fb9aa6f1SThomas Gleixner return pcibios_enable_irq(dev); 620fb9aa6f1SThomas Gleixner return 0; 621fb9aa6f1SThomas Gleixner } 622fb9aa6f1SThomas Gleixner 623fb9aa6f1SThomas Gleixner void pcibios_disable_device (struct pci_dev *dev) 624fb9aa6f1SThomas Gleixner { 62516cf0ebcSRafael J. Wysocki if (!pci_dev_msi_enabled(dev) && pcibios_disable_irq) 626fb9aa6f1SThomas Gleixner pcibios_disable_irq(dev); 627fb9aa6f1SThomas Gleixner } 628fb9aa6f1SThomas Gleixner 629642c92daSTaku Izumi int pci_ext_cfg_avail(void) 6300ef5f8f6SAndrew Patterson { 6310ef5f8f6SAndrew Patterson if (raw_pci_ext_ops) 6320ef5f8f6SAndrew Patterson return 1; 6330ef5f8f6SAndrew Patterson else 6340ef5f8f6SAndrew Patterson return 0; 6350ef5f8f6SAndrew Patterson } 6360ef5f8f6SAndrew Patterson 63798db6f19SSam Ravnborg struct pci_bus * __devinit pci_scan_bus_on_node(int busno, struct pci_ops *ops, int node) 638fb9aa6f1SThomas Gleixner { 6392cd6975aSBjorn Helgaas LIST_HEAD(resources); 640fb9aa6f1SThomas Gleixner struct pci_bus *bus = NULL; 641fb9aa6f1SThomas Gleixner struct pci_sysdata *sd; 642fb9aa6f1SThomas Gleixner 643fb9aa6f1SThomas Gleixner /* 644fb9aa6f1SThomas Gleixner * Allocate per-root-bus (not per bus) arch-specific data. 645fb9aa6f1SThomas Gleixner * TODO: leak; this memory is never freed. 646fb9aa6f1SThomas Gleixner * It's arguable whether it's worth the trouble to care. 647fb9aa6f1SThomas Gleixner */ 648fb9aa6f1SThomas Gleixner sd = kzalloc(sizeof(*sd), GFP_KERNEL); 649fb9aa6f1SThomas Gleixner if (!sd) { 650fb9aa6f1SThomas Gleixner printk(KERN_ERR "PCI: OOM, skipping PCI bus %02x\n", busno); 651fb9aa6f1SThomas Gleixner return NULL; 652fb9aa6f1SThomas Gleixner } 653871d5f8dSYinghai Lu sd->node = node; 6542cd6975aSBjorn Helgaas x86_pci_root_bus_resources(busno, &resources); 655c57ca65aSYinghai Lu printk(KERN_DEBUG "PCI: Probing PCI hardware (bus %02x)\n", busno); 6562cd6975aSBjorn Helgaas bus = pci_scan_root_bus(NULL, busno, ops, sd, &resources); 6572cd6975aSBjorn Helgaas if (!bus) { 6582cd6975aSBjorn Helgaas pci_free_resource_list(&resources); 659fb9aa6f1SThomas Gleixner kfree(sd); 6602cd6975aSBjorn Helgaas } 661fb9aa6f1SThomas Gleixner 662fb9aa6f1SThomas Gleixner return bus; 663fb9aa6f1SThomas Gleixner } 664871d5f8dSYinghai Lu 66598db6f19SSam Ravnborg struct pci_bus * __devinit pci_scan_bus_with_sysdata(int busno) 666871d5f8dSYinghai Lu { 667871d5f8dSYinghai Lu return pci_scan_bus_on_node(busno, &pci_root_ops, -1); 668871d5f8dSYinghai Lu } 6692547089cSJesse Barnes 6702547089cSJesse Barnes /* 6712547089cSJesse Barnes * NUMA info for PCI busses 6722547089cSJesse Barnes * 6732547089cSJesse Barnes * Early arch code is responsible for filling in reasonable values here. 6742547089cSJesse Barnes * A node id of "-1" means "use current node". In other words, if a bus 6752547089cSJesse Barnes * has a -1 node id, it's not tightly coupled to any particular chunk 6762547089cSJesse Barnes * of memory (as is the case on some Nehalem systems). 6772547089cSJesse Barnes */ 6782547089cSJesse Barnes #ifdef CONFIG_NUMA 6792547089cSJesse Barnes 6802547089cSJesse Barnes #define BUS_NR 256 6812547089cSJesse Barnes 6822547089cSJesse Barnes #ifdef CONFIG_X86_64 6832547089cSJesse Barnes 6842547089cSJesse Barnes static int mp_bus_to_node[BUS_NR] = { 6852547089cSJesse Barnes [0 ... BUS_NR - 1] = -1 6862547089cSJesse Barnes }; 6872547089cSJesse Barnes 6882547089cSJesse Barnes void set_mp_bus_to_node(int busnum, int node) 6892547089cSJesse Barnes { 6902547089cSJesse Barnes if (busnum >= 0 && busnum < BUS_NR) 6912547089cSJesse Barnes mp_bus_to_node[busnum] = node; 6922547089cSJesse Barnes } 6932547089cSJesse Barnes 6942547089cSJesse Barnes int get_mp_bus_to_node(int busnum) 6952547089cSJesse Barnes { 6962547089cSJesse Barnes int node = -1; 6972547089cSJesse Barnes 6982547089cSJesse Barnes if (busnum < 0 || busnum > (BUS_NR - 1)) 6992547089cSJesse Barnes return node; 7002547089cSJesse Barnes 7012547089cSJesse Barnes node = mp_bus_to_node[busnum]; 7022547089cSJesse Barnes 7032547089cSJesse Barnes /* 7042547089cSJesse Barnes * let numa_node_id to decide it later in dma_alloc_pages 7052547089cSJesse Barnes * if there is no ram on that node 7062547089cSJesse Barnes */ 7072547089cSJesse Barnes if (node != -1 && !node_online(node)) 7082547089cSJesse Barnes node = -1; 7092547089cSJesse Barnes 7102547089cSJesse Barnes return node; 7112547089cSJesse Barnes } 7122547089cSJesse Barnes 7132547089cSJesse Barnes #else /* CONFIG_X86_32 */ 7142547089cSJesse Barnes 71576baeebfSJesse Barnes static int mp_bus_to_node[BUS_NR] = { 7162547089cSJesse Barnes [0 ... BUS_NR - 1] = -1 7172547089cSJesse Barnes }; 7182547089cSJesse Barnes 7192547089cSJesse Barnes void set_mp_bus_to_node(int busnum, int node) 7202547089cSJesse Barnes { 7212547089cSJesse Barnes if (busnum >= 0 && busnum < BUS_NR) 7222547089cSJesse Barnes mp_bus_to_node[busnum] = (unsigned char) node; 7232547089cSJesse Barnes } 7242547089cSJesse Barnes 7252547089cSJesse Barnes int get_mp_bus_to_node(int busnum) 7262547089cSJesse Barnes { 7272547089cSJesse Barnes int node; 7282547089cSJesse Barnes 7292547089cSJesse Barnes if (busnum < 0 || busnum > (BUS_NR - 1)) 7302547089cSJesse Barnes return 0; 7312547089cSJesse Barnes node = mp_bus_to_node[busnum]; 7322547089cSJesse Barnes return node; 7332547089cSJesse Barnes } 7342547089cSJesse Barnes 7352547089cSJesse Barnes #endif /* CONFIG_X86_32 */ 7362547089cSJesse Barnes 7372547089cSJesse Barnes #endif /* CONFIG_NUMA */ 738