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> 12fb9aa6f1SThomas Gleixner 13fb9aa6f1SThomas Gleixner #include <asm/acpi.h> 14fb9aa6f1SThomas Gleixner #include <asm/segment.h> 15fb9aa6f1SThomas Gleixner #include <asm/io.h> 16fb9aa6f1SThomas Gleixner #include <asm/smp.h> 1782487711SJaswinder Singh Rajput #include <asm/pci_x86.h> 18fb9aa6f1SThomas Gleixner 19fb9aa6f1SThomas Gleixner unsigned int pci_probe = PCI_PROBE_BIOS | PCI_PROBE_CONF1 | PCI_PROBE_CONF2 | 20fb9aa6f1SThomas Gleixner PCI_PROBE_MMCONF; 21fb9aa6f1SThomas Gleixner 22e3f2baebSYinghai Lu unsigned int pci_early_dump_regs; 23fb9aa6f1SThomas Gleixner static int pci_bf_sort; 24fb9aa6f1SThomas Gleixner int pci_routeirq; 25a9322f64SStefan Assmann int noioapicquirk; 2641b9eb26SStefan Assmann #ifdef CONFIG_X86_REROUTE_FOR_BROKEN_BOOT_IRQS 2741b9eb26SStefan Assmann int noioapicreroute = 0; 2841b9eb26SStefan Assmann #else 299197979bSStefan Assmann int noioapicreroute = 1; 3041b9eb26SStefan Assmann #endif 31fb9aa6f1SThomas Gleixner int pcibios_last_bus = -1; 32fb9aa6f1SThomas Gleixner unsigned long pirq_table_addr; 33fb9aa6f1SThomas Gleixner struct pci_bus *pci_root_bus; 34fb9aa6f1SThomas Gleixner struct pci_raw_ops *raw_pci_ops; 35b6ce068aSMatthew Wilcox struct pci_raw_ops *raw_pci_ext_ops; 36b6ce068aSMatthew Wilcox 37b6ce068aSMatthew Wilcox int raw_pci_read(unsigned int domain, unsigned int bus, unsigned int devfn, 38b6ce068aSMatthew Wilcox int reg, int len, u32 *val) 39b6ce068aSMatthew Wilcox { 40beef3129SMatthew Wilcox if (domain == 0 && reg < 256 && raw_pci_ops) 41b6ce068aSMatthew Wilcox return raw_pci_ops->read(domain, bus, devfn, reg, len, val); 42b6ce068aSMatthew Wilcox if (raw_pci_ext_ops) 43b6ce068aSMatthew Wilcox return raw_pci_ext_ops->read(domain, bus, devfn, reg, len, val); 44b6ce068aSMatthew Wilcox return -EINVAL; 45b6ce068aSMatthew Wilcox } 46b6ce068aSMatthew Wilcox 47b6ce068aSMatthew Wilcox int raw_pci_write(unsigned int domain, unsigned int bus, unsigned int devfn, 48b6ce068aSMatthew Wilcox int reg, int len, u32 val) 49b6ce068aSMatthew Wilcox { 50beef3129SMatthew Wilcox if (domain == 0 && reg < 256 && raw_pci_ops) 51b6ce068aSMatthew Wilcox return raw_pci_ops->write(domain, bus, devfn, reg, len, val); 52b6ce068aSMatthew Wilcox if (raw_pci_ext_ops) 53b6ce068aSMatthew Wilcox return raw_pci_ext_ops->write(domain, bus, devfn, reg, len, val); 54b6ce068aSMatthew Wilcox return -EINVAL; 55b6ce068aSMatthew Wilcox } 56fb9aa6f1SThomas Gleixner 57fb9aa6f1SThomas Gleixner static int pci_read(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *value) 58fb9aa6f1SThomas Gleixner { 59b6ce068aSMatthew Wilcox return raw_pci_read(pci_domain_nr(bus), bus->number, 60a79e4198SJeff Garzik devfn, where, size, value); 61fb9aa6f1SThomas Gleixner } 62fb9aa6f1SThomas Gleixner 63fb9aa6f1SThomas Gleixner static int pci_write(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 value) 64fb9aa6f1SThomas Gleixner { 65b6ce068aSMatthew Wilcox return raw_pci_write(pci_domain_nr(bus), bus->number, 66a79e4198SJeff Garzik devfn, where, size, value); 67fb9aa6f1SThomas Gleixner } 68fb9aa6f1SThomas Gleixner 69fb9aa6f1SThomas Gleixner struct pci_ops pci_root_ops = { 70fb9aa6f1SThomas Gleixner .read = pci_read, 71fb9aa6f1SThomas Gleixner .write = pci_write, 72fb9aa6f1SThomas Gleixner }; 73fb9aa6f1SThomas Gleixner 74fb9aa6f1SThomas Gleixner /* 75fb9aa6f1SThomas Gleixner * legacy, numa, and acpi all want to call pcibios_scan_root 76fb9aa6f1SThomas Gleixner * from their initcalls. This flag prevents that. 77fb9aa6f1SThomas Gleixner */ 78fb9aa6f1SThomas Gleixner int pcibios_scanned; 79fb9aa6f1SThomas Gleixner 80fb9aa6f1SThomas Gleixner /* 81fb9aa6f1SThomas Gleixner * This interrupt-safe spinlock protects all accesses to PCI 82fb9aa6f1SThomas Gleixner * configuration space. 83fb9aa6f1SThomas Gleixner */ 84fb9aa6f1SThomas Gleixner DEFINE_SPINLOCK(pci_config_lock); 85fb9aa6f1SThomas Gleixner 8613a6ddb0SYinghai Lu static int __devinit can_skip_ioresource_align(const struct dmi_system_id *d) 8713a6ddb0SYinghai Lu { 8813a6ddb0SYinghai Lu pci_probe |= PCI_CAN_SKIP_ISA_ALIGN; 8913a6ddb0SYinghai Lu printk(KERN_INFO "PCI: %s detected, can skip ISA alignment\n", d->ident); 9013a6ddb0SYinghai Lu return 0; 9113a6ddb0SYinghai Lu } 9213a6ddb0SYinghai Lu 93821508d4SJan Beulich static const struct dmi_system_id can_skip_pciprobe_dmi_table[] __devinitconst = { 9413a6ddb0SYinghai Lu /* 9513a6ddb0SYinghai Lu * Systems where PCI IO resource ISA alignment can be skipped 9613a6ddb0SYinghai Lu * when the ISA enable bit in the bridge control is not set 9713a6ddb0SYinghai Lu */ 9813a6ddb0SYinghai Lu { 9913a6ddb0SYinghai Lu .callback = can_skip_ioresource_align, 10013a6ddb0SYinghai Lu .ident = "IBM System x3800", 10113a6ddb0SYinghai Lu .matches = { 10213a6ddb0SYinghai Lu DMI_MATCH(DMI_SYS_VENDOR, "IBM"), 10313a6ddb0SYinghai Lu DMI_MATCH(DMI_PRODUCT_NAME, "x3800"), 10413a6ddb0SYinghai Lu }, 10513a6ddb0SYinghai Lu }, 10613a6ddb0SYinghai Lu { 10713a6ddb0SYinghai Lu .callback = can_skip_ioresource_align, 10813a6ddb0SYinghai Lu .ident = "IBM System x3850", 10913a6ddb0SYinghai Lu .matches = { 11013a6ddb0SYinghai Lu DMI_MATCH(DMI_SYS_VENDOR, "IBM"), 11113a6ddb0SYinghai Lu DMI_MATCH(DMI_PRODUCT_NAME, "x3850"), 11213a6ddb0SYinghai Lu }, 11313a6ddb0SYinghai Lu }, 11413a6ddb0SYinghai Lu { 11513a6ddb0SYinghai Lu .callback = can_skip_ioresource_align, 11613a6ddb0SYinghai Lu .ident = "IBM System x3950", 11713a6ddb0SYinghai Lu .matches = { 11813a6ddb0SYinghai Lu DMI_MATCH(DMI_SYS_VENDOR, "IBM"), 11913a6ddb0SYinghai Lu DMI_MATCH(DMI_PRODUCT_NAME, "x3950"), 12013a6ddb0SYinghai Lu }, 12113a6ddb0SYinghai Lu }, 12213a6ddb0SYinghai Lu {} 12313a6ddb0SYinghai Lu }; 12413a6ddb0SYinghai Lu 12513a6ddb0SYinghai Lu void __init dmi_check_skip_isa_align(void) 12613a6ddb0SYinghai Lu { 12713a6ddb0SYinghai Lu dmi_check_system(can_skip_pciprobe_dmi_table); 12813a6ddb0SYinghai Lu } 12913a6ddb0SYinghai Lu 130bb71ad88SGary Hade static void __devinit pcibios_fixup_device_resources(struct pci_dev *dev) 131bb71ad88SGary Hade { 132bb71ad88SGary Hade struct resource *rom_r = &dev->resource[PCI_ROM_RESOURCE]; 133bb71ad88SGary Hade 134bb71ad88SGary Hade if (pci_probe & PCI_NOASSIGN_ROMS) { 135bb71ad88SGary Hade if (rom_r->parent) 136bb71ad88SGary Hade return; 137bb71ad88SGary Hade if (rom_r->start) { 138bb71ad88SGary Hade /* we deal with BIOS assigned ROM later */ 139bb71ad88SGary Hade return; 140bb71ad88SGary Hade } 141bb71ad88SGary Hade rom_r->start = rom_r->end = rom_r->flags = 0; 142bb71ad88SGary Hade } 143bb71ad88SGary Hade } 144bb71ad88SGary Hade 145fb9aa6f1SThomas Gleixner /* 146fb9aa6f1SThomas Gleixner * Called after each bus is probed, but before its children 147fb9aa6f1SThomas Gleixner * are examined. 148fb9aa6f1SThomas Gleixner */ 149fb9aa6f1SThomas Gleixner 150fb9aa6f1SThomas Gleixner void __devinit pcibios_fixup_bus(struct pci_bus *b) 151fb9aa6f1SThomas Gleixner { 152bb71ad88SGary Hade struct pci_dev *dev; 153bb71ad88SGary Hade 154fb9aa6f1SThomas Gleixner pci_read_bridge_bases(b); 155bb71ad88SGary Hade list_for_each_entry(dev, &b->devices, bus_list) 156bb71ad88SGary Hade pcibios_fixup_device_resources(dev); 157fb9aa6f1SThomas Gleixner } 158fb9aa6f1SThomas Gleixner 159fb9aa6f1SThomas Gleixner /* 160fb9aa6f1SThomas Gleixner * Only use DMI information to set this if nothing was passed 161fb9aa6f1SThomas Gleixner * on the kernel command line (which was parsed earlier). 162fb9aa6f1SThomas Gleixner */ 163fb9aa6f1SThomas Gleixner 16419ad7ae4SLinus Torvalds static int __devinit set_bf_sort(const struct dmi_system_id *d) 165fb9aa6f1SThomas Gleixner { 166fb9aa6f1SThomas Gleixner if (pci_bf_sort == pci_bf_sort_default) { 167fb9aa6f1SThomas Gleixner pci_bf_sort = pci_dmi_bf; 168fb9aa6f1SThomas Gleixner printk(KERN_INFO "PCI: %s detected, enabling pci=bfsort.\n", d->ident); 169fb9aa6f1SThomas Gleixner } 170fb9aa6f1SThomas Gleixner return 0; 171fb9aa6f1SThomas Gleixner } 172fb9aa6f1SThomas Gleixner 173fb9aa6f1SThomas Gleixner /* 174fb9aa6f1SThomas Gleixner * Enable renumbering of PCI bus# ranges to reach all PCI busses (Cardbus) 175fb9aa6f1SThomas Gleixner */ 176fb9aa6f1SThomas Gleixner #ifdef __i386__ 17719ad7ae4SLinus Torvalds static int __devinit assign_all_busses(const struct dmi_system_id *d) 178fb9aa6f1SThomas Gleixner { 179fb9aa6f1SThomas Gleixner pci_probe |= PCI_ASSIGN_ALL_BUSSES; 180fb9aa6f1SThomas Gleixner printk(KERN_INFO "%s detected: enabling PCI bus# renumbering" 181fb9aa6f1SThomas Gleixner " (pci=assign-busses)\n", d->ident); 182fb9aa6f1SThomas Gleixner return 0; 183fb9aa6f1SThomas Gleixner } 184fb9aa6f1SThomas Gleixner #endif 185fb9aa6f1SThomas Gleixner 186821508d4SJan Beulich static const struct dmi_system_id __devinitconst pciprobe_dmi_table[] = { 187fb9aa6f1SThomas Gleixner #ifdef __i386__ 188fb9aa6f1SThomas Gleixner /* 189fb9aa6f1SThomas Gleixner * Laptops which need pci=assign-busses to see Cardbus cards 190fb9aa6f1SThomas Gleixner */ 191fb9aa6f1SThomas Gleixner { 192fb9aa6f1SThomas Gleixner .callback = assign_all_busses, 193fb9aa6f1SThomas Gleixner .ident = "Samsung X20 Laptop", 194fb9aa6f1SThomas Gleixner .matches = { 195fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_SYS_VENDOR, "Samsung Electronics"), 196fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_PRODUCT_NAME, "SX20S"), 197fb9aa6f1SThomas Gleixner }, 198fb9aa6f1SThomas Gleixner }, 199fb9aa6f1SThomas Gleixner #endif /* __i386__ */ 200fb9aa6f1SThomas Gleixner { 201fb9aa6f1SThomas Gleixner .callback = set_bf_sort, 202fb9aa6f1SThomas Gleixner .ident = "Dell PowerEdge 1950", 203fb9aa6f1SThomas Gleixner .matches = { 204fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_SYS_VENDOR, "Dell"), 205fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge 1950"), 206fb9aa6f1SThomas Gleixner }, 207fb9aa6f1SThomas Gleixner }, 208fb9aa6f1SThomas Gleixner { 209fb9aa6f1SThomas Gleixner .callback = set_bf_sort, 210fb9aa6f1SThomas Gleixner .ident = "Dell PowerEdge 1955", 211fb9aa6f1SThomas Gleixner .matches = { 212fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_SYS_VENDOR, "Dell"), 213fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge 1955"), 214fb9aa6f1SThomas Gleixner }, 215fb9aa6f1SThomas Gleixner }, 216fb9aa6f1SThomas Gleixner { 217fb9aa6f1SThomas Gleixner .callback = set_bf_sort, 218fb9aa6f1SThomas Gleixner .ident = "Dell PowerEdge 2900", 219fb9aa6f1SThomas Gleixner .matches = { 220fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_SYS_VENDOR, "Dell"), 221fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge 2900"), 222fb9aa6f1SThomas Gleixner }, 223fb9aa6f1SThomas Gleixner }, 224fb9aa6f1SThomas Gleixner { 225fb9aa6f1SThomas Gleixner .callback = set_bf_sort, 226fb9aa6f1SThomas Gleixner .ident = "Dell PowerEdge 2950", 227fb9aa6f1SThomas Gleixner .matches = { 228fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_SYS_VENDOR, "Dell"), 229fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge 2950"), 230fb9aa6f1SThomas Gleixner }, 231fb9aa6f1SThomas Gleixner }, 232fb9aa6f1SThomas Gleixner { 233fb9aa6f1SThomas Gleixner .callback = set_bf_sort, 234fb9aa6f1SThomas Gleixner .ident = "Dell PowerEdge R900", 235fb9aa6f1SThomas Gleixner .matches = { 236fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_SYS_VENDOR, "Dell"), 237fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge R900"), 238fb9aa6f1SThomas Gleixner }, 239fb9aa6f1SThomas Gleixner }, 240fb9aa6f1SThomas Gleixner { 241fb9aa6f1SThomas Gleixner .callback = set_bf_sort, 242fb9aa6f1SThomas Gleixner .ident = "HP ProLiant BL20p G3", 243fb9aa6f1SThomas Gleixner .matches = { 244fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_SYS_VENDOR, "HP"), 245fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL20p G3"), 246fb9aa6f1SThomas Gleixner }, 247fb9aa6f1SThomas Gleixner }, 248fb9aa6f1SThomas Gleixner { 249fb9aa6f1SThomas Gleixner .callback = set_bf_sort, 250fb9aa6f1SThomas Gleixner .ident = "HP ProLiant BL20p G4", 251fb9aa6f1SThomas Gleixner .matches = { 252fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_SYS_VENDOR, "HP"), 253fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL20p G4"), 254fb9aa6f1SThomas Gleixner }, 255fb9aa6f1SThomas Gleixner }, 256fb9aa6f1SThomas Gleixner { 257fb9aa6f1SThomas Gleixner .callback = set_bf_sort, 258fb9aa6f1SThomas Gleixner .ident = "HP ProLiant BL30p G1", 259fb9aa6f1SThomas Gleixner .matches = { 260fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_SYS_VENDOR, "HP"), 261fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL30p G1"), 262fb9aa6f1SThomas Gleixner }, 263fb9aa6f1SThomas Gleixner }, 264fb9aa6f1SThomas Gleixner { 265fb9aa6f1SThomas Gleixner .callback = set_bf_sort, 266fb9aa6f1SThomas Gleixner .ident = "HP ProLiant BL25p G1", 267fb9aa6f1SThomas Gleixner .matches = { 268fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_SYS_VENDOR, "HP"), 269fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL25p G1"), 270fb9aa6f1SThomas Gleixner }, 271fb9aa6f1SThomas Gleixner }, 272fb9aa6f1SThomas Gleixner { 273fb9aa6f1SThomas Gleixner .callback = set_bf_sort, 274fb9aa6f1SThomas Gleixner .ident = "HP ProLiant BL35p G1", 275fb9aa6f1SThomas Gleixner .matches = { 276fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_SYS_VENDOR, "HP"), 277fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL35p G1"), 278fb9aa6f1SThomas Gleixner }, 279fb9aa6f1SThomas Gleixner }, 280fb9aa6f1SThomas Gleixner { 281fb9aa6f1SThomas Gleixner .callback = set_bf_sort, 282fb9aa6f1SThomas Gleixner .ident = "HP ProLiant BL45p G1", 283fb9aa6f1SThomas Gleixner .matches = { 284fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_SYS_VENDOR, "HP"), 285fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL45p G1"), 286fb9aa6f1SThomas Gleixner }, 287fb9aa6f1SThomas Gleixner }, 288fb9aa6f1SThomas Gleixner { 289fb9aa6f1SThomas Gleixner .callback = set_bf_sort, 290fb9aa6f1SThomas Gleixner .ident = "HP ProLiant BL45p G2", 291fb9aa6f1SThomas Gleixner .matches = { 292fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_SYS_VENDOR, "HP"), 293fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL45p G2"), 294fb9aa6f1SThomas Gleixner }, 295fb9aa6f1SThomas Gleixner }, 296fb9aa6f1SThomas Gleixner { 297fb9aa6f1SThomas Gleixner .callback = set_bf_sort, 298fb9aa6f1SThomas Gleixner .ident = "HP ProLiant BL460c G1", 299fb9aa6f1SThomas Gleixner .matches = { 300fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_SYS_VENDOR, "HP"), 301fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL460c G1"), 302fb9aa6f1SThomas Gleixner }, 303fb9aa6f1SThomas Gleixner }, 304fb9aa6f1SThomas Gleixner { 305fb9aa6f1SThomas Gleixner .callback = set_bf_sort, 306fb9aa6f1SThomas Gleixner .ident = "HP ProLiant BL465c G1", 307fb9aa6f1SThomas Gleixner .matches = { 308fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_SYS_VENDOR, "HP"), 309fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL465c G1"), 310fb9aa6f1SThomas Gleixner }, 311fb9aa6f1SThomas Gleixner }, 312fb9aa6f1SThomas Gleixner { 313fb9aa6f1SThomas Gleixner .callback = set_bf_sort, 314fb9aa6f1SThomas Gleixner .ident = "HP ProLiant BL480c G1", 315fb9aa6f1SThomas Gleixner .matches = { 316fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_SYS_VENDOR, "HP"), 317fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL480c G1"), 318fb9aa6f1SThomas Gleixner }, 319fb9aa6f1SThomas Gleixner }, 320fb9aa6f1SThomas Gleixner { 321fb9aa6f1SThomas Gleixner .callback = set_bf_sort, 322fb9aa6f1SThomas Gleixner .ident = "HP ProLiant BL685c G1", 323fb9aa6f1SThomas Gleixner .matches = { 324fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_SYS_VENDOR, "HP"), 325fb9aa6f1SThomas Gleixner DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL685c G1"), 326fb9aa6f1SThomas Gleixner }, 327fb9aa6f1SThomas Gleixner }, 3288f8ae1a7SMichal Schmidt { 3298f8ae1a7SMichal Schmidt .callback = set_bf_sort, 3308d64c781STony Camuso .ident = "HP ProLiant DL360", 3318f8ae1a7SMichal Schmidt .matches = { 3328f8ae1a7SMichal Schmidt DMI_MATCH(DMI_SYS_VENDOR, "HP"), 3338d64c781STony Camuso DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant DL360"), 3348f8ae1a7SMichal Schmidt }, 3358f8ae1a7SMichal Schmidt }, 3368f8ae1a7SMichal Schmidt { 3378f8ae1a7SMichal Schmidt .callback = set_bf_sort, 3388d64c781STony Camuso .ident = "HP ProLiant DL380", 3398f8ae1a7SMichal Schmidt .matches = { 3408f8ae1a7SMichal Schmidt DMI_MATCH(DMI_SYS_VENDOR, "HP"), 3418d64c781STony Camuso DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant DL380"), 3428f8ae1a7SMichal Schmidt }, 3438f8ae1a7SMichal Schmidt }, 3445b1ea82fSJuha Laiho #ifdef __i386__ 3455b1ea82fSJuha Laiho { 3465b1ea82fSJuha Laiho .callback = assign_all_busses, 3475b1ea82fSJuha Laiho .ident = "Compaq EVO N800c", 3485b1ea82fSJuha Laiho .matches = { 3495b1ea82fSJuha Laiho DMI_MATCH(DMI_SYS_VENDOR, "Compaq"), 3505b1ea82fSJuha Laiho DMI_MATCH(DMI_PRODUCT_NAME, "EVO N800c"), 3515b1ea82fSJuha Laiho }, 3525b1ea82fSJuha Laiho }, 3535b1ea82fSJuha Laiho #endif 354c82bc5adSMichal Schmidt { 355c82bc5adSMichal Schmidt .callback = set_bf_sort, 356739db07fSJesse Barnes .ident = "HP ProLiant DL385 G2", 357c82bc5adSMichal Schmidt .matches = { 358c82bc5adSMichal Schmidt DMI_MATCH(DMI_SYS_VENDOR, "HP"), 359739db07fSJesse Barnes DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant DL385 G2"), 360c82bc5adSMichal Schmidt }, 361c82bc5adSMichal Schmidt }, 362c82bc5adSMichal Schmidt { 363c82bc5adSMichal Schmidt .callback = set_bf_sort, 364739db07fSJesse Barnes .ident = "HP ProLiant DL585 G2", 365c82bc5adSMichal Schmidt .matches = { 366c82bc5adSMichal Schmidt DMI_MATCH(DMI_SYS_VENDOR, "HP"), 367739db07fSJesse Barnes DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant DL585 G2"), 368c82bc5adSMichal Schmidt }, 369c82bc5adSMichal Schmidt }, 370fb9aa6f1SThomas Gleixner {} 371fb9aa6f1SThomas Gleixner }; 372fb9aa6f1SThomas Gleixner 3730df18ff3SYinghai Lu void __init dmi_check_pciprobe(void) 3740df18ff3SYinghai Lu { 3750df18ff3SYinghai Lu dmi_check_system(pciprobe_dmi_table); 3760df18ff3SYinghai Lu } 3770df18ff3SYinghai Lu 378fb9aa6f1SThomas Gleixner struct pci_bus * __devinit pcibios_scan_root(int busnum) 379fb9aa6f1SThomas Gleixner { 380fb9aa6f1SThomas Gleixner struct pci_bus *bus = NULL; 381fb9aa6f1SThomas Gleixner struct pci_sysdata *sd; 382fb9aa6f1SThomas Gleixner 383fb9aa6f1SThomas Gleixner while ((bus = pci_find_next_bus(bus)) != NULL) { 384fb9aa6f1SThomas Gleixner if (bus->number == busnum) { 385fb9aa6f1SThomas Gleixner /* Already scanned */ 386fb9aa6f1SThomas Gleixner return bus; 387fb9aa6f1SThomas Gleixner } 388fb9aa6f1SThomas Gleixner } 389fb9aa6f1SThomas Gleixner 390fb9aa6f1SThomas Gleixner /* Allocate per-root-bus (not per bus) arch-specific data. 391fb9aa6f1SThomas Gleixner * TODO: leak; this memory is never freed. 392fb9aa6f1SThomas Gleixner * It's arguable whether it's worth the trouble to care. 393fb9aa6f1SThomas Gleixner */ 394fb9aa6f1SThomas Gleixner sd = kzalloc(sizeof(*sd), GFP_KERNEL); 395fb9aa6f1SThomas Gleixner if (!sd) { 396fb9aa6f1SThomas Gleixner printk(KERN_ERR "PCI: OOM, not probing PCI bus %02x\n", busnum); 397fb9aa6f1SThomas Gleixner return NULL; 398fb9aa6f1SThomas Gleixner } 399fb9aa6f1SThomas Gleixner 400871d5f8dSYinghai Lu sd->node = get_mp_bus_to_node(busnum); 401fb9aa6f1SThomas Gleixner 402871d5f8dSYinghai Lu printk(KERN_DEBUG "PCI: Probing PCI hardware (bus %02x)\n", busnum); 403871d5f8dSYinghai Lu bus = pci_scan_bus_parented(NULL, busnum, &pci_root_ops, sd); 404871d5f8dSYinghai Lu if (!bus) 405871d5f8dSYinghai Lu kfree(sd); 406871d5f8dSYinghai Lu 407871d5f8dSYinghai Lu return bus; 408fb9aa6f1SThomas Gleixner } 409fb9aa6f1SThomas Gleixner 410fb9aa6f1SThomas Gleixner extern u8 pci_cache_line_size; 411fb9aa6f1SThomas Gleixner 4128dd779b1SRobert Richter int __init pcibios_init(void) 413fb9aa6f1SThomas Gleixner { 414fb9aa6f1SThomas Gleixner struct cpuinfo_x86 *c = &boot_cpu_data; 415fb9aa6f1SThomas Gleixner 416fb9aa6f1SThomas Gleixner if (!raw_pci_ops) { 417fb9aa6f1SThomas Gleixner printk(KERN_WARNING "PCI: System does not support PCI\n"); 418fb9aa6f1SThomas Gleixner return 0; 419fb9aa6f1SThomas Gleixner } 420fb9aa6f1SThomas Gleixner 421fb9aa6f1SThomas Gleixner /* 422fb9aa6f1SThomas Gleixner * Assume PCI cacheline size of 32 bytes for all x86s except K7/K8 423fb9aa6f1SThomas Gleixner * and P4. It's also good for 386/486s (which actually have 16) 424fb9aa6f1SThomas Gleixner * as quite a few PCI devices do not support smaller values. 425fb9aa6f1SThomas Gleixner */ 426fb9aa6f1SThomas Gleixner pci_cache_line_size = 32 >> 2; 427fb9aa6f1SThomas Gleixner if (c->x86 >= 6 && c->x86_vendor == X86_VENDOR_AMD) 428fb9aa6f1SThomas Gleixner pci_cache_line_size = 64 >> 2; /* K7 & K8 */ 429fb9aa6f1SThomas Gleixner else if (c->x86 > 6 && c->x86_vendor == X86_VENDOR_INTEL) 430fb9aa6f1SThomas Gleixner pci_cache_line_size = 128 >> 2; /* P4 */ 431fb9aa6f1SThomas Gleixner 432fb9aa6f1SThomas Gleixner pcibios_resource_survey(); 433fb9aa6f1SThomas Gleixner 434fb9aa6f1SThomas Gleixner if (pci_bf_sort >= pci_force_bf) 435fb9aa6f1SThomas Gleixner pci_sort_breadthfirst(); 436fb9aa6f1SThomas Gleixner return 0; 437fb9aa6f1SThomas Gleixner } 438fb9aa6f1SThomas Gleixner 439fb9aa6f1SThomas Gleixner char * __devinit pcibios_setup(char *str) 440fb9aa6f1SThomas Gleixner { 441fb9aa6f1SThomas Gleixner if (!strcmp(str, "off")) { 442fb9aa6f1SThomas Gleixner pci_probe = 0; 443fb9aa6f1SThomas Gleixner return NULL; 444fb9aa6f1SThomas Gleixner } else if (!strcmp(str, "bfsort")) { 445fb9aa6f1SThomas Gleixner pci_bf_sort = pci_force_bf; 446fb9aa6f1SThomas Gleixner return NULL; 447fb9aa6f1SThomas Gleixner } else if (!strcmp(str, "nobfsort")) { 448fb9aa6f1SThomas Gleixner pci_bf_sort = pci_force_nobf; 449fb9aa6f1SThomas Gleixner return NULL; 450fb9aa6f1SThomas Gleixner } 451fb9aa6f1SThomas Gleixner #ifdef CONFIG_PCI_BIOS 452fb9aa6f1SThomas Gleixner else if (!strcmp(str, "bios")) { 453fb9aa6f1SThomas Gleixner pci_probe = PCI_PROBE_BIOS; 454fb9aa6f1SThomas Gleixner return NULL; 455fb9aa6f1SThomas Gleixner } else if (!strcmp(str, "nobios")) { 456fb9aa6f1SThomas Gleixner pci_probe &= ~PCI_PROBE_BIOS; 457fb9aa6f1SThomas Gleixner return NULL; 458fb9aa6f1SThomas Gleixner } else if (!strcmp(str, "biosirq")) { 459fb9aa6f1SThomas Gleixner pci_probe |= PCI_BIOS_IRQ_SCAN; 460fb9aa6f1SThomas Gleixner return NULL; 461fb9aa6f1SThomas Gleixner } else if (!strncmp(str, "pirqaddr=", 9)) { 462fb9aa6f1SThomas Gleixner pirq_table_addr = simple_strtoul(str+9, NULL, 0); 463fb9aa6f1SThomas Gleixner return NULL; 464fb9aa6f1SThomas Gleixner } 465fb9aa6f1SThomas Gleixner #endif 466fb9aa6f1SThomas Gleixner #ifdef CONFIG_PCI_DIRECT 467fb9aa6f1SThomas Gleixner else if (!strcmp(str, "conf1")) { 468fb9aa6f1SThomas Gleixner pci_probe = PCI_PROBE_CONF1 | PCI_NO_CHECKS; 469fb9aa6f1SThomas Gleixner return NULL; 470fb9aa6f1SThomas Gleixner } 471fb9aa6f1SThomas Gleixner else if (!strcmp(str, "conf2")) { 472fb9aa6f1SThomas Gleixner pci_probe = PCI_PROBE_CONF2 | PCI_NO_CHECKS; 473fb9aa6f1SThomas Gleixner return NULL; 474fb9aa6f1SThomas Gleixner } 475fb9aa6f1SThomas Gleixner #endif 476fb9aa6f1SThomas Gleixner #ifdef CONFIG_PCI_MMCONFIG 477fb9aa6f1SThomas Gleixner else if (!strcmp(str, "nommconf")) { 478fb9aa6f1SThomas Gleixner pci_probe &= ~PCI_PROBE_MMCONF; 479fb9aa6f1SThomas Gleixner return NULL; 480fb9aa6f1SThomas Gleixner } 4815f0b2976SYinghai Lu else if (!strcmp(str, "check_enable_amd_mmconf")) { 4825f0b2976SYinghai Lu pci_probe |= PCI_CHECK_ENABLE_AMD_MMCONF; 4835f0b2976SYinghai Lu return NULL; 4845f0b2976SYinghai Lu } 485fb9aa6f1SThomas Gleixner #endif 486fb9aa6f1SThomas Gleixner else if (!strcmp(str, "noacpi")) { 487fb9aa6f1SThomas Gleixner acpi_noirq_set(); 488fb9aa6f1SThomas Gleixner return NULL; 489fb9aa6f1SThomas Gleixner } 490fb9aa6f1SThomas Gleixner else if (!strcmp(str, "noearly")) { 491fb9aa6f1SThomas Gleixner pci_probe |= PCI_PROBE_NOEARLY; 492fb9aa6f1SThomas Gleixner return NULL; 493fb9aa6f1SThomas Gleixner } 494fb9aa6f1SThomas Gleixner #ifndef CONFIG_X86_VISWS 495fb9aa6f1SThomas Gleixner else if (!strcmp(str, "usepirqmask")) { 496fb9aa6f1SThomas Gleixner pci_probe |= PCI_USE_PIRQ_MASK; 497fb9aa6f1SThomas Gleixner return NULL; 498fb9aa6f1SThomas Gleixner } else if (!strncmp(str, "irqmask=", 8)) { 499fb9aa6f1SThomas Gleixner pcibios_irq_mask = simple_strtol(str+8, NULL, 0); 500fb9aa6f1SThomas Gleixner return NULL; 501fb9aa6f1SThomas Gleixner } else if (!strncmp(str, "lastbus=", 8)) { 502fb9aa6f1SThomas Gleixner pcibios_last_bus = simple_strtol(str+8, NULL, 0); 503fb9aa6f1SThomas Gleixner return NULL; 504fb9aa6f1SThomas Gleixner } 505fb9aa6f1SThomas Gleixner #endif 506fb9aa6f1SThomas Gleixner else if (!strcmp(str, "rom")) { 507fb9aa6f1SThomas Gleixner pci_probe |= PCI_ASSIGN_ROMS; 508fb9aa6f1SThomas Gleixner return NULL; 509bb71ad88SGary Hade } else if (!strcmp(str, "norom")) { 510bb71ad88SGary Hade pci_probe |= PCI_NOASSIGN_ROMS; 511bb71ad88SGary Hade return NULL; 512fb9aa6f1SThomas Gleixner } else if (!strcmp(str, "assign-busses")) { 513fb9aa6f1SThomas Gleixner pci_probe |= PCI_ASSIGN_ALL_BUSSES; 514fb9aa6f1SThomas Gleixner return NULL; 51562f420f8SGary Hade } else if (!strcmp(str, "use_crs")) { 51662f420f8SGary Hade pci_probe |= PCI_USE__CRS; 51762f420f8SGary Hade return NULL; 518e3f2baebSYinghai Lu } else if (!strcmp(str, "earlydump")) { 519e3f2baebSYinghai Lu pci_early_dump_regs = 1; 520e3f2baebSYinghai Lu return NULL; 521fb9aa6f1SThomas Gleixner } else if (!strcmp(str, "routeirq")) { 522fb9aa6f1SThomas Gleixner pci_routeirq = 1; 523fb9aa6f1SThomas Gleixner return NULL; 52413a6ddb0SYinghai Lu } else if (!strcmp(str, "skip_isa_align")) { 52513a6ddb0SYinghai Lu pci_probe |= PCI_CAN_SKIP_ISA_ALIGN; 52613a6ddb0SYinghai Lu return NULL; 527a9322f64SStefan Assmann } else if (!strcmp(str, "noioapicquirk")) { 528a9322f64SStefan Assmann noioapicquirk = 1; 529a9322f64SStefan Assmann return NULL; 5309197979bSStefan Assmann } else if (!strcmp(str, "ioapicreroute")) { 5319197979bSStefan Assmann if (noioapicreroute != -1) 5329197979bSStefan Assmann noioapicreroute = 0; 5339197979bSStefan Assmann return NULL; 53441b9eb26SStefan Assmann } else if (!strcmp(str, "noioapicreroute")) { 53541b9eb26SStefan Assmann if (noioapicreroute != -1) 53641b9eb26SStefan Assmann noioapicreroute = 1; 53741b9eb26SStefan Assmann return NULL; 538fb9aa6f1SThomas Gleixner } 539fb9aa6f1SThomas Gleixner return str; 540fb9aa6f1SThomas Gleixner } 541fb9aa6f1SThomas Gleixner 542fb9aa6f1SThomas Gleixner unsigned int pcibios_assign_all_busses(void) 543fb9aa6f1SThomas Gleixner { 544fb9aa6f1SThomas Gleixner return (pci_probe & PCI_ASSIGN_ALL_BUSSES) ? 1 : 0; 545fb9aa6f1SThomas Gleixner } 546fb9aa6f1SThomas Gleixner 547fb9aa6f1SThomas Gleixner int pcibios_enable_device(struct pci_dev *dev, int mask) 548fb9aa6f1SThomas Gleixner { 549fb9aa6f1SThomas Gleixner int err; 550fb9aa6f1SThomas Gleixner 551b81d988cSBjorn Helgaas if ((err = pci_enable_resources(dev, mask)) < 0) 552fb9aa6f1SThomas Gleixner return err; 553fb9aa6f1SThomas Gleixner 55416cf0ebcSRafael J. Wysocki if (!pci_dev_msi_enabled(dev)) 555fb9aa6f1SThomas Gleixner return pcibios_enable_irq(dev); 556fb9aa6f1SThomas Gleixner return 0; 557fb9aa6f1SThomas Gleixner } 558fb9aa6f1SThomas Gleixner 559fb9aa6f1SThomas Gleixner void pcibios_disable_device (struct pci_dev *dev) 560fb9aa6f1SThomas Gleixner { 56116cf0ebcSRafael J. Wysocki if (!pci_dev_msi_enabled(dev) && pcibios_disable_irq) 562fb9aa6f1SThomas Gleixner pcibios_disable_irq(dev); 563fb9aa6f1SThomas Gleixner } 564fb9aa6f1SThomas Gleixner 5650ef5f8f6SAndrew Patterson int pci_ext_cfg_avail(struct pci_dev *dev) 5660ef5f8f6SAndrew Patterson { 5670ef5f8f6SAndrew Patterson if (raw_pci_ext_ops) 5680ef5f8f6SAndrew Patterson return 1; 5690ef5f8f6SAndrew Patterson else 5700ef5f8f6SAndrew Patterson return 0; 5710ef5f8f6SAndrew Patterson } 5720ef5f8f6SAndrew Patterson 57398db6f19SSam Ravnborg struct pci_bus * __devinit pci_scan_bus_on_node(int busno, struct pci_ops *ops, int node) 574fb9aa6f1SThomas Gleixner { 575fb9aa6f1SThomas Gleixner struct pci_bus *bus = NULL; 576fb9aa6f1SThomas Gleixner struct pci_sysdata *sd; 577fb9aa6f1SThomas Gleixner 578fb9aa6f1SThomas Gleixner /* 579fb9aa6f1SThomas Gleixner * Allocate per-root-bus (not per bus) arch-specific data. 580fb9aa6f1SThomas Gleixner * TODO: leak; this memory is never freed. 581fb9aa6f1SThomas Gleixner * It's arguable whether it's worth the trouble to care. 582fb9aa6f1SThomas Gleixner */ 583fb9aa6f1SThomas Gleixner sd = kzalloc(sizeof(*sd), GFP_KERNEL); 584fb9aa6f1SThomas Gleixner if (!sd) { 585fb9aa6f1SThomas Gleixner printk(KERN_ERR "PCI: OOM, skipping PCI bus %02x\n", busno); 586fb9aa6f1SThomas Gleixner return NULL; 587fb9aa6f1SThomas Gleixner } 588871d5f8dSYinghai Lu sd->node = node; 589871d5f8dSYinghai Lu bus = pci_scan_bus(busno, ops, sd); 590fb9aa6f1SThomas Gleixner if (!bus) 591fb9aa6f1SThomas Gleixner kfree(sd); 592fb9aa6f1SThomas Gleixner 593fb9aa6f1SThomas Gleixner return bus; 594fb9aa6f1SThomas Gleixner } 595871d5f8dSYinghai Lu 59698db6f19SSam Ravnborg struct pci_bus * __devinit pci_scan_bus_with_sysdata(int busno) 597871d5f8dSYinghai Lu { 598871d5f8dSYinghai Lu return pci_scan_bus_on_node(busno, &pci_root_ops, -1); 599871d5f8dSYinghai Lu } 600