taglinefilesource code
bus85arch/alpha/kernel/apecs.cstatic int mk_conf_addr(unsigned char bus, unsigned char device_fn,
bus92arch/alpha/kernel/apecs.cbus, device_fn, where, pci_addr, type1));
bus94arch/alpha/kernel/apecs.cif (bus == 0) {
bus109arch/alpha/kernel/apecs.caddr = (bus << 16) | (device_fn << 8) | (where);
bus278arch/alpha/kernel/apecs.cint pcibios_read_config_byte (unsigned char bus, unsigned char device_fn,
bus287arch/alpha/kernel/apecs.cif (mk_conf_addr(bus, device_fn, where, &pci_addr, &type1) < 0) {
bus299arch/alpha/kernel/apecs.cint pcibios_read_config_word (unsigned char bus, unsigned char device_fn,
bus312arch/alpha/kernel/apecs.cif (mk_conf_addr(bus, device_fn, where, &pci_addr, &type1)) {
bus323arch/alpha/kernel/apecs.cint pcibios_read_config_dword (unsigned char bus, unsigned char device_fn,
bus335arch/alpha/kernel/apecs.cif (mk_conf_addr(bus, device_fn, where, &pci_addr, &type1)) {
bus344arch/alpha/kernel/apecs.cint pcibios_write_config_byte (unsigned char bus, unsigned char device_fn,
bus351arch/alpha/kernel/apecs.cif (mk_conf_addr(bus, device_fn, where, &pci_addr, &type1) < 0) {
bus360arch/alpha/kernel/apecs.cint pcibios_write_config_word (unsigned char bus, unsigned char device_fn,
bus367arch/alpha/kernel/apecs.cif (mk_conf_addr(bus, device_fn, where, &pci_addr, &type1) < 0) {
bus376arch/alpha/kernel/apecs.cint pcibios_write_config_dword (unsigned char bus, unsigned char device_fn,
bus383arch/alpha/kernel/apecs.cif (mk_conf_addr(bus, device_fn, where, &pci_addr, &type1) < 0) {
bus94arch/alpha/kernel/bios32.cstruct pci_bus *bus;
bus98arch/alpha/kernel/bios32.cbus = dev->bus;
bus99arch/alpha/kernel/bios32.cpcibios_read_config_word(bus->number, dev->devfn, PCI_COMMAND, &cmd);
bus106arch/alpha/kernel/bios32.cpcibios_write_config_dword(bus->number, dev->devfn, reg,
bus108arch/alpha/kernel/bios32.cpcibios_read_config_dword(bus->number, dev->devfn, reg, &base);
bus128arch/alpha/kernel/bios32.cpcibios_write_config_dword(bus->number, dev->devfn, 
bus207arch/alpha/kernel/bios32.cpcibios_write_config_dword(bus->number, dev->devfn,
bus225arch/alpha/kernel/bios32.cpcibios_write_config_word(bus->number, dev->devfn, PCI_COMMAND,
bus230arch/alpha/kernel/bios32.cstatic void layout_bus(struct pci_bus *bus)
bus236arch/alpha/kernel/bios32.cif (!bus->devices && !bus->children)
bus249arch/alpha/kernel/bios32.cfor (dev = bus->devices; dev; dev = dev->sibling) {
bus257arch/alpha/kernel/bios32.cfor (child = bus->children; child; child = child->next) {
bus266arch/alpha/kernel/bios32.cif (bus->self) {
bus267arch/alpha/kernel/bios32.cstruct pci_dev *bridge = bus->self;
bus272arch/alpha/kernel/bios32.cpcibios_read_config_dword(bridge->bus->number, bridge->devfn,
bus275arch/alpha/kernel/bios32.cpcibios_write_config_dword(bridge->bus->number, bridge->devfn,
bus279arch/alpha/kernel/bios32.cpcibios_write_config_dword(bridge->bus->number, bridge->devfn,
bus284arch/alpha/kernel/bios32.cpcibios_write_config_dword(bridge->bus->number, bridge->devfn,
bus289arch/alpha/kernel/bios32.cpcibios_write_config_dword(bridge->bus->number, bridge->devfn,
bus297arch/alpha/kernel/bios32.cpcibios_write_config_dword(bridge->bus->number, bridge->devfn,
bus310arch/alpha/kernel/bios32.cunsigned short index, unsigned char *bus,
bus320arch/alpha/kernel/bios32.c*bus = dev->bus->number;
bus335arch/alpha/kernel/bios32.cunsigned char *bus, unsigned char *devfn)
bus344arch/alpha/kernel/bios32.c*bus = dev->bus->number;
bus417arch/alpha/kernel/bios32.cif (dev->bus->number != 0)
bus421arch/alpha/kernel/bios32.cpcibios_read_config_byte(dev->bus->number, dev->devfn,
bus427arch/alpha/kernel/bios32.cpcibios_write_config_byte(dev->bus->number, dev->devfn,
bus434arch/alpha/kernel/bios32.cpcibios_write_config_dword(dev->bus->number, dev->devfn,
bus610arch/alpha/kernel/bios32.cif (dev->bus->number != 0 ||
bus615arch/alpha/kernel/bios32.cdev->bus->number, PCI_SLOT(dev->devfn));
bus618arch/alpha/kernel/bios32.cpcibios_read_config_byte(dev->bus->number, dev->devfn,
bus628arch/alpha/kernel/bios32.cpcibios_write_config_dword(dev->bus->number, dev->devfn,
bus642arch/alpha/kernel/bios32.cpcibios_write_config_byte(dev->bus->number, dev->devfn,
bus90arch/alpha/kernel/lca.cstatic int mk_conf_addr(unsigned char bus, unsigned char device_fn,
bus95arch/alpha/kernel/lca.cif (bus == 0) {
bus110arch/alpha/kernel/lca.caddr = (bus << 16) | (device_fn << 8) | where;
bus189arch/alpha/kernel/lca.cint pcibios_read_config_byte (unsigned char bus, unsigned char device_fn,
bus197arch/alpha/kernel/lca.cif (mk_conf_addr(bus, device_fn, where, &pci_addr) < 0) {
bus206arch/alpha/kernel/lca.cint pcibios_read_config_word (unsigned char bus, unsigned char device_fn,
bus217arch/alpha/kernel/lca.cif (mk_conf_addr(bus, device_fn, where, &pci_addr)) {
bus226arch/alpha/kernel/lca.cint pcibios_read_config_dword (unsigned char bus, unsigned char device_fn,
bus236arch/alpha/kernel/lca.cif (mk_conf_addr(bus, device_fn, where, &pci_addr)) {
bus245arch/alpha/kernel/lca.cint pcibios_write_config_byte (unsigned char bus, unsigned char device_fn,
bus251arch/alpha/kernel/lca.cif (mk_conf_addr(bus, device_fn, where, &pci_addr) < 0) {
bus260arch/alpha/kernel/lca.cint pcibios_write_config_word (unsigned char bus, unsigned char device_fn,
bus266arch/alpha/kernel/lca.cif (mk_conf_addr(bus, device_fn, where, &pci_addr) < 0) {
bus275arch/alpha/kernel/lca.cint pcibios_write_config_dword (unsigned char bus, unsigned char device_fn,
bus281arch/alpha/kernel/lca.cif (mk_conf_addr(bus, device_fn, where, &pci_addr) < 0) {
bus209arch/i386/kernel/bios32.cunsigned char *bus, unsigned char *device_fn)
bus224arch/i386/kernel/bios32.c*bus = (bx >> 8) & 0xff;
bus231arch/i386/kernel/bios32.cunsigned short index, unsigned char *bus, unsigned char *device_fn)
bus247arch/i386/kernel/bios32.c*bus = (bx >> 8) & 0xff;
bus252arch/i386/kernel/bios32.cint pcibios_read_config_byte(unsigned char bus,
bus256arch/i386/kernel/bios32.cunsigned long bx = (bus << 8) | device_fn;
bus271arch/i386/kernel/bios32.cint pcibios_read_config_word (unsigned char bus,
bus275arch/i386/kernel/bios32.cunsigned long bx = (bus << 8) | device_fn;
bus290arch/i386/kernel/bios32.cint pcibios_read_config_dword (unsigned char bus,
bus294arch/i386/kernel/bios32.cunsigned long bx = (bus << 8) | device_fn;
bus309arch/i386/kernel/bios32.cint pcibios_write_config_byte (unsigned char bus,
bus313arch/i386/kernel/bios32.cunsigned long bx = (bus << 8) | device_fn;
bus328arch/i386/kernel/bios32.cint pcibios_write_config_word (unsigned char bus,
bus332arch/i386/kernel/bios32.cunsigned long bx = (bus << 8) | device_fn;
bus347arch/i386/kernel/bios32.cint pcibios_write_config_dword (unsigned char bus,
bus351arch/i386/kernel/bios32.cunsigned long bx = (bus << 8) | device_fn;
bus53arch/ppc/kernel/pci.cpcibios_read_config_dword (unsigned char bus,
bus60arch/ppc/kernel/pci.c_printk("PCI Read config dword[%d.%d.%x] = ", bus, dev, offset);
bus62arch/ppc/kernel/pci.cif ((bus != 0) || (dev < 11) || (dev > 16))
bus82arch/ppc/kernel/pci.cpcibios_read_config_word (unsigned char bus,
bus89arch/ppc/kernel/pci.c_printk("PCI Read config word[%d.%d.%x] = ", bus, dev, offset);
bus91arch/ppc/kernel/pci.cif ((bus != 0) || (dev < 11) || (dev > 16))
bus111arch/ppc/kernel/pci.cpcibios_read_config_byte (unsigned char bus,
bus118arch/ppc/kernel/pci.c_printk("PCI Read config byte[%d.%d.%x] = ", bus, dev, offset);
bus120arch/ppc/kernel/pci.cif ((bus != 0) || (dev < 11) || (dev > 16))
bus140arch/ppc/kernel/pci.cpcibios_write_config_dword (unsigned char bus,
bus148arch/ppc/kernel/pci.c_printk("PCI Write config dword[%d.%d.%x] = %x\n", bus, dev, offset, _val);
bus150arch/ppc/kernel/pci.cif ((bus != 0) || (dev < 11) || (dev > 16))
bus162arch/ppc/kernel/pci.cpcibios_write_config_word (unsigned char bus,
bus170arch/ppc/kernel/pci.c_printk("PCI Write config word[%d.%d.%x] = %x\n", bus, dev, offset, _val);
bus172arch/ppc/kernel/pci.cif ((bus != 0) || (dev < 11) || (dev > 16))
bus184arch/ppc/kernel/pci.cpcibios_write_config_byte (unsigned char bus,
bus192arch/ppc/kernel/pci.c_printk("PCI Write config byte[%d.%d.%x] = %x\n", bus, dev, offset, _val);
bus194arch/ppc/kernel/pci.cif ((bus != 0) || (dev < 11) || (dev > 16))
bus207arch/ppc/kernel/pci.cunsigned short index, unsigned char *bus,
bus222arch/ppc/kernel/pci.c*bus = 0;
bus234arch/ppc/kernel/pci.cunsigned char *bus, unsigned char *dev)
bus2959drivers/block/ide.cvoid init_rz1000 (byte bus, byte fn)
bus2965drivers/block/ide.cif ((rc = pcibios_read_config_word (bus, fn, PCI_COMMAND, &reg))) {
bus2970drivers/block/ide.cif ((rc = pcibios_read_config_word(bus, fn, 0x40, &reg))
bus2971drivers/block/ide.c|| (rc =  pcibios_write_config_word(bus, fn, 0x40, reg & 0xdfff)))
bus2989drivers/block/ide.cbyte fn, bus;
bus2993drivers/block/ide.cfor (index = 0; !pcibios_find_device (vendor, device, index, &bus, &fn); ++index) {
bus2994drivers/block/ide.cinit (bus, fn + func_adj);
bus324drivers/block/triton.cvoid ide_init_triton (byte bus, byte fn)
bus335drivers/block/triton.cif ((rc = pcibios_read_config_word(bus, fn, 0x04, &pcicmd)))
bus345drivers/block/triton.c(void) pcibios_write_config_word(bus, fn, 0x42, 0x8037); /* for my MC2112A */
bus350drivers/block/triton.cif ((rc = pcibios_read_config_dword(bus, fn, 0x40, &timings)))
bus356drivers/block/triton.cprintk("ide: Triton BM-IDE on PCI bus %d function %d\n", bus, fn);
bus361drivers/block/triton.cif ((rc = pcibios_read_config_word(bus, fn, 0x20, &bmiba)))
bus369drivers/net/de4x5.cint  bus;                                /* EISA or PCI */
bus467drivers/net/de4x5.cint bus;
bus473drivers/net/de4x5.c} bus;
bus525drivers/net/de4x5.cstruct bus_type *lp = &bus;
bus541drivers/net/de4x5.cif (lp->bus == PCI) {
bus557drivers/net/de4x5.cif (lp->bus == EISA) {
bus572drivers/net/de4x5.ctmpbus = lp->bus;
bus592drivers/net/de4x5.clp->bus = tmpbus;
bus615drivers/net/de4x5.crequest_region(iobase, (lp->bus == PCI ? DE4X5_PCI_TOTAL_SIZE :
bus695drivers/net/de4x5.cif (status) release_region(iobase, (lp->bus == PCI ? 
bus1488drivers/net/de4x5.cstruct bus_type *lp = &bus;
bus1494drivers/net/de4x5.clp->bus = EISA;
bus1512drivers/net/de4x5.clp->bus = EISA;
bus1559drivers/net/de4x5.cstruct bus_type *lp = &bus;
bus1564drivers/net/de4x5.clp->bus = PCI;
bus2226drivers/net/de4x5.cstruct bus_type *lp = &bus;
bus2234drivers/net/de4x5.cif (lp->bus == PCI) {
bus2270drivers/net/de4x5.cstruct bus_type *lp = &bus;
bus2276drivers/net/de4x5.cif (lp->bus == PCI) {
bus2299drivers/net/de4x5.cif (lp->bus == PCI) {
bus2768drivers/net/de4x5.crelease_region(thisDE4X5.base_addr, (lp->bus == PCI ? 
bus16drivers/net/de4x5.h#define DE4X5_BMR    iobase+(0x000 << lp->bus)  /* Bus Mode Register */
bus17drivers/net/de4x5.h#define DE4X5_TPD    iobase+(0x008 << lp->bus)  /* Transmit Poll Demand Reg */
bus18drivers/net/de4x5.h#define DE4X5_RPD    iobase+(0x010 << lp->bus)  /* Receive Poll Demand Reg */
bus19drivers/net/de4x5.h#define DE4X5_RRBA   iobase+(0x018 << lp->bus)  /* RX Ring Base Address Reg */
bus20drivers/net/de4x5.h#define DE4X5_TRBA   iobase+(0x020 << lp->bus)  /* TX Ring Base Address Reg */
bus21drivers/net/de4x5.h#define DE4X5_STS    iobase+(0x028 << lp->bus)  /* Status Register */
bus22drivers/net/de4x5.h#define DE4X5_OMR    iobase+(0x030 << lp->bus)  /* Operation Mode Register */
bus23drivers/net/de4x5.h#define DE4X5_IMR    iobase+(0x038 << lp->bus)  /* Interrupt Mask Register */
bus24drivers/net/de4x5.h#define DE4X5_MFC    iobase+(0x040 << lp->bus)  /* Missed Frame Counter */
bus25drivers/net/de4x5.h#define DE4X5_APROM  iobase+(0x048 << lp->bus)  /* Ethernet Address PROM */
bus26drivers/net/de4x5.h#define DE4X5_BROM   iobase+(0x048 << lp->bus)  /* Boot ROM Register */
bus27drivers/net/de4x5.h#define DE4X5_SROM   iobase+(0x048 << lp->bus)  /* Serial ROM Register */
bus28drivers/net/de4x5.h#define DE4X5_DDR    iobase+(0x050 << lp->bus)  /* Data Diagnostic Register */
bus29drivers/net/de4x5.h#define DE4X5_FDR    iobase+(0x058 << lp->bus)  /* Full Duplex Register */
bus30drivers/net/de4x5.h#define DE4X5_GPT    iobase+(0x058 << lp->bus)  /* General Purpose Timer Reg.*/
bus31drivers/net/de4x5.h#define DE4X5_GEP    iobase+(0x060 << lp->bus)  /* General Purpose Register */
bus32drivers/net/de4x5.h#define DE4X5_SISR   iobase+(0x060 << lp->bus)  /* SIA Status Register */
bus33drivers/net/de4x5.h#define DE4X5_SICR   iobase+(0x068 << lp->bus)  /* SIA Connectivity Register */
bus34drivers/net/de4x5.h#define DE4X5_STRR   iobase+(0x070 << lp->bus)  /* SIA TX/RX Register */
bus35drivers/net/de4x5.h#define DE4X5_SIGR   iobase+(0x078 << lp->bus)  /* SIA General Register */
bus138drivers/net/hp100.cu_char bus;
bus190drivers/net/hp100.cstatic int hp100_probe1( struct device *dev, int ioaddr, int bus );
bus300drivers/net/hp100.cstatic int hp100_probe1( struct device *dev, int ioaddr, int bus )
bus318drivers/net/hp100.cif ( bus != HP100_BUS_PCI )    /* don't check PCI cards again */
bus386drivers/net/hp100.cif ( bus == HP100_BUS_ISA && ( (u_long)mem_ptr_phys & ~0xfffff ) != 0 )
bus391drivers/net/hp100.cif ( mem_mapped && bus == HP100_BUS_PCI )
bus447drivers/net/hp100.cswitch ( bus ) {
bus722drivers/net/sunlance.cstruct linux_sbus *bus;
bus730drivers/net/sunlance.cfor_each_sbus (bus){
bus731drivers/net/sunlance.cfor_each_sbusdev (sdev, bus){
bus469drivers/pci/pci.cstatic void burst_bridge(unsigned char bus, unsigned char devfn,
bus485drivers/pci/pci.cpcibios_read_config_byte(bus, devfn, bmap->addr, &val);
bus489drivers/pci/pci.cpcibios_write_config_byte(bus, devfn,
bus498drivers/pci/pci.cpcibios_write_config_byte(bus, devfn,
bus521drivers/pci/pci.cunsigned int l, class_rev, bus, devfn;
bus527drivers/pci/pci.cbus   = dev->bus->number;
bus530drivers/pci/pci.cpcibios_read_config_dword(bus, devfn, PCI_CLASS_REVISION, &class_rev);
bus531drivers/pci/pci.cpcibios_read_config_word (bus, devfn, PCI_VENDOR_ID, &vendor);
bus532drivers/pci/pci.cpcibios_read_config_word (bus, devfn, PCI_DEVICE_ID, &device);
bus533drivers/pci/pci.cpcibios_read_config_word (bus, devfn, PCI_STATUS, &status);
bus534drivers/pci/pci.cpcibios_read_config_byte (bus, devfn, PCI_BIST, &bist);
bus535drivers/pci/pci.cpcibios_read_config_byte (bus, devfn, PCI_LATENCY_TIMER, &latency);
bus536drivers/pci/pci.cpcibios_read_config_byte (bus, devfn, PCI_MIN_GNT, &min_gnt);
bus537drivers/pci/pci.cpcibios_read_config_byte (bus, devfn, PCI_MAX_LAT, &max_lat);
bus542drivers/pci/pci.cbus, PCI_SLOT(devfn), PCI_FUNC(devfn));
bus612drivers/pci/pci.cpcibios_read_config_dword(bus, devfn, reg, &l);
bus639drivers/pci/pci.cpcibios_read_config_dword(bus, devfn, reg, &l);
bus698drivers/pci/pci.cstatic unsigned int scan_bus(struct pci_bus *bus, unsigned long *mem_startp)
bus707drivers/pci/pci.cprintk("...scan_bus(busno=%d,mem=%p)\n", bus->number, *mem_startp);
bus710drivers/pci/pci.cmax = bus->secondary;
bus713drivers/pci/pci.cpcibios_read_config_byte(bus->number, devfn,
bus720drivers/pci/pci.cpcibios_read_config_dword(bus->number, devfn, PCI_VENDOR_ID,
bus729drivers/pci/pci.cdev->bus = bus;
bus754drivers/pci/pci.cburst_bridge(bus->number, devfn,
bus760drivers/pci/pci.cpcibios_read_config_byte(bus->number, devfn, PCI_COMMAND,
bus762drivers/pci/pci.cpcibios_write_config_byte(bus->number, devfn, PCI_COMMAND,
bus764drivers/pci/pci.cpcibios_read_config_byte(bus->number, devfn, PCI_COMMAND,
bus767drivers/pci/pci.cpcibios_write_config_byte(bus->number, devfn, PCI_COMMAND,
bus771drivers/pci/pci.cpcibios_read_config_byte(bus->number, devfn,
bus775drivers/pci/pci.cpcibios_read_config_dword(bus->number, devfn,
bus783drivers/pci/pci.cdev->sibling = bus->devices;
bus784drivers/pci/pci.cbus->devices = dev;
bus794drivers/pci/pci.cchild->next   = bus->children;
bus795drivers/pci/pci.cbus->children = child;
bus797drivers/pci/pci.cchild->parent = bus;
bus804drivers/pci/pci.cchild->primary = bus->secondary;
bus810drivers/pci/pci.cpcibios_read_config_word(bus->number, devfn,
bus812drivers/pci/pci.cpcibios_write_config_word(bus->number, devfn,
bus814drivers/pci/pci.cpcibios_write_config_word(bus->number, devfn,
bus819drivers/pci/pci.cpcibios_read_config_dword(bus->number, devfn, 0x18,
bus825drivers/pci/pci.cpcibios_write_config_dword(bus->number, devfn, 0x18,
bus838drivers/pci/pci.cpcibios_write_config_dword(bus->number, devfn, 0x18,
bus840drivers/pci/pci.cpcibios_write_config_word(bus->number, devfn,
bus505drivers/scsi/53c7,8xx.cint bus;
bus594drivers/scsi/53c7,8xx.coverrides[commandline_current].data.pci.bus = ints[1];
bus1392drivers/scsi/53c7,8xx.cunsigned char bus, unsigned char device_fn, long long options) {
bus1406drivers/scsi/53c7,8xx.cbus, (int) (device_fn & 0xf8) >> 3, 
bus1415drivers/scsi/53c7,8xx.cif ((error = pcibios_read_config_word (bus, device_fn, PCI_VENDOR_ID, 
bus1417drivers/scsi/53c7,8xx.c(error = pcibios_read_config_word (bus, device_fn, PCI_DEVICE_ID, 
bus1419drivers/scsi/53c7,8xx.c(error = pcibios_read_config_word (bus, device_fn, PCI_COMMAND, 
bus1421drivers/scsi/53c7,8xx.c(error = pcibios_read_config_dword (bus, device_fn, 
bus1423drivers/scsi/53c7,8xx.c(error = pcibios_read_config_dword (bus, device_fn, 
bus1425drivers/scsi/53c7,8xx.c(error = pcibios_read_config_byte (bus, device_fn, PCI_CLASS_REVISION,
bus1427drivers/scsi/53c7,8xx.c(error = pcibios_read_config_byte (bus, device_fn, PCI_INTERRUPT_LINE,
bus1512drivers/scsi/53c7,8xx.c(int) irq, DMA_NONE, 1, bus, device_fn, options);
bus1546drivers/scsi/53c7,8xx.c(unsigned char) overrides[current_override].data.pci.bus,
bus97include/asm-sparc/io.hint bus, int rdonly)
bus101include/asm-sparc/io.hsun4c_mapioaddr(physaddr, virt_addr, bus, rdonly);
bus106include/asm-sparc/io.hsrmmu_mapioaddr(physaddr, virt_addr, bus, rdonly);
bus84include/asm-sparc/sbus.h#define for_each_sbus(bus) \
bus85include/asm-sparc/sbus.hfor((bus) = SBus_chain; (bus); (bus)=(bus)->next)
bus87include/asm-sparc/sbus.h#define for_each_sbusdev(device, bus) \
bus88include/asm-sparc/sbus.hfor((device) = (bus)->devices; (device); (device)=(device)->next)
bus43include/linux/bios32.hunsigned char *bus, unsigned char *dev_fn);
bus45include/linux/bios32.hunsigned short index, unsigned char *bus,
bus47include/linux/bios32.hextern int pcibios_read_config_byte (unsigned char bus, unsigned char dev_fn,
bus49include/linux/bios32.hextern int pcibios_read_config_word (unsigned char bus, unsigned char dev_fn,
bus51include/linux/bios32.hextern int pcibios_read_config_dword (unsigned char bus, unsigned char dev_fn,
bus53include/linux/bios32.hextern int pcibios_write_config_byte (unsigned char bus, unsigned char dev_fn,
bus55include/linux/bios32.hextern int pcibios_write_config_word (unsigned char bus, unsigned char dev_fn,
bus57include/linux/bios32.hextern pcibios_write_config_dword (unsigned char bus, unsigned char dev_fn,
bus511include/linux/pci.hstruct pci_bus  *bus;    /* bus this device is on */