LXR linux/drivers/ssb/driver

   1/*
   2 * Sonics Silicon Backplane
   3 * Broadcom PCI-core driver
   4 *
   5 * Copyright 2005, Broadcom Corporation
   6 * Copyright 2006, 2007, Michael Buesch <mb@bu3sch.de>
   7 *
   8 * Licensed under the GNU/GPL. See COPYING for details.
   9 */
  10
  11#include <linux/ssb/ssb.h>
  12#include <linux/pci.h>
  13#include <linux/delay.h>
  14#include <linux/ssb/ssb_embedded.h>
  15
  16#include "ssb_private.h"
  17
  18
  19static inline
  20u32 pcicore_read32(struct ssb_pcicore *pc, u16 offset)
  21{
  22        return ssb_read32(pc->dev, offset);
  23}
  24
  25static inline
  26void pcicore_write32(struct ssb_pcicore *pc, u16 offset, u32 value)
  27{
  28        ssb_write32(pc->dev, offset, value);
  29}
  30
  31static inline
  32u16 pcicore_read16(struct ssb_pcicore *pc, u16 offset)
  33{
  34        return ssb_read16(pc->dev, offset);
  35}
  36
  37static inline
  38void pcicore_write16(struct ssb_pcicore *pc, u16 offset, u16 value)
  39{
  40        ssb_write16(pc->dev, offset, value);
  41}
  42
  43/**************************************************
  44 * Code for hostmode operation.
  45 **************************************************/
  46
  47#ifdef CONFIG_SSB_PCICORE_HOSTMODE
  48
  49#include <asm/paccess.h>
  50/* Probe a 32bit value on the bus and catch bus exceptions.
  51 * Returns nonzero on a bus exception.
  52 * This is MIPS specific */
  53#define mips_busprobe32(val, addr)      get_dbe((val), ((u32 *)(addr)))
  54
  55/* Assume one-hot slot wiring */
  56#define SSB_PCI_SLOT_MAX        16
  57
  58/* Global lock is OK, as we won't have more than one extpci anyway. */
  59static DEFINE_SPINLOCK(cfgspace_lock);
  60/* Core to access the external PCI config space. Can only have one. */
  61static struct ssb_pcicore *extpci_core;
  62
  63
  64static u32 get_cfgspace_addr(struct ssb_pcicore *pc,
  65                             unsigned int bus, unsigned int dev,
  66                             unsigned int func, unsigned int off)
  67{
  68        u32 addr = 0;
  69        u32 tmp;
  70
  71        /* We do only have one cardbus device behind the bridge. */
  72        if (pc->cardbusmode && (dev >= 1))
  73                goto out;
  74
  75        if (bus == 0) {
  76                /* Type 0 transaction */
  77                if (unlikely(dev >= SSB_PCI_SLOT_MAX))
  78                        goto out;
  79                /* Slide the window */
  80                tmp = SSB_PCICORE_SBTOPCI_CFG0;
  81                tmp |= ((1 << (dev + 16)) & SSB_PCICORE_SBTOPCI1_MASK);
  82                pcicore_write32(pc, SSB_PCICORE_SBTOPCI1, tmp);
  83                /* Calculate the address */
  84                addr = SSB_PCI_CFG;
  85                addr |= ((1 << (dev + 16)) & ~SSB_PCICORE_SBTOPCI1_MASK);
  86                addr |= (func << 8);
  87                addr |= (off & ~3);
  88        } else {
  89                /* Type 1 transaction */
  90                pcicore_write32(pc, SSB_PCICORE_SBTOPCI1,
  91                                SSB_PCICORE_SBTOPCI_CFG1);
  92                /* Calculate the address */
  93                addr = SSB_PCI_CFG;
  94                addr |= (bus << 16);
  95                addr |= (dev << 11);
  96                addr |= (func << 8);
  97                addr |= (off & ~3);
  98        }
  99out:
 100        return addr;
 101}
 102
 103static int ssb_extpci_read_config(struct ssb_pcicore *pc,
 104                                  unsigned int bus, unsigned int dev,
 105                                  unsigned int func, unsigned int off,
 106                                  void *buf, int len)
 107{
 108        int err = -EINVAL;
 109        u32 addr, val;
 110        void __iomem *mmio;
 111
 112        SSB_WARN_ON(!pc->hostmode);
 113        if (unlikely(len != 1 && len != 2 && len != 4))
 114                goto out;
 115        addr = get_cfgspace_addr(pc, bus, dev, func, off);
 116        if (unlikely(!addr))
 117                goto out;
 118        err = -ENOMEM;
 119        mmio = ioremap_nocache(addr, len);
 120        if (!mmio)
 121                goto out;
 122
 123        if (mips_busprobe32(val, mmio)) {
 124                val = 0xffffffff;
 125                goto unmap;
 126        }
 127
 128        val = readl(mmio);
 129        val >>= (8 * (off & 3));
 130
 131        switch (len) {
 132        case 1:
 133                *((u8 *)buf) = (u8)val;
 134                break;
 135        case 2:
 136                *((u16 *)buf) = (u16)val;
 137                break;
 138        case 4:
 139                *((u32 *)buf) = (u32)val;
 140                break;
 141        }
 142        err = 0;
 143unmap:
 144        iounmap(mmio);
 145out:
 146        return err;
 147}
 148
 149static int ssb_extpci_write_config(struct ssb_pcicore *pc,
 150                                   unsigned int bus, unsigned int dev,
 151                                   unsigned int func, unsigned int off,
 152                                   const void *buf, int len)
 153{
 154        int err = -EINVAL;
 155        u32 addr, val = 0;
 156        void __iomem *mmio;
 157
 158        SSB_WARN_ON(!pc->hostmode);
 159        if (unlikely(len != 1 && len != 2 && len != 4))
 160                goto out;
 161        addr = get_cfgspace_addr(pc, bus, dev, func, off);
 162        if (unlikely(!addr))
 163                goto out;
 164        err = -ENOMEM;
 165        mmio = ioremap_nocache(addr, len);
 166        if (!mmio)
 167                goto out;
 168
 169        if (mips_busprobe32(val, mmio)) {
 170                val = 0xffffffff;
 171                goto unmap;
 172        }
 173
 174        switch (len) {
 175        case 1:
 176                val = readl(mmio);
 177                val &= ~(0xFF << (8 * (off & 3)));
 178                val |= *((const u8 *)buf) << (8 * (off & 3));
 179                break;
 180        case 2:
 181                val = readl(mmio);
 182                val &= ~(0xFFFF << (8 * (off & 3)));
 183                val |= *((const u16 *)buf) << (8 * (off & 3));
 184                break;
 185        case 4:
 186                val = *((const u32 *)buf);
 187                break;
 188        }
 189        writel(val, mmio);
 190
 191        err = 0;
 192unmap:
 193        iounmap(mmio);
 194out:
 195        return err;
 196}
 197
 198static int ssb_pcicore_read_config(struct pci_bus *bus, unsigned int devfn,
 199                                   int reg, int size, u32 *val)
 200{
 201        unsigned long flags;
 202        int err;
 203
 204        spin_lock_irqsave(&cfgspace_lock, flags);
 205        err = ssb_extpci_read_config(extpci_core, bus->number, PCI_SLOT(devfn),
 206                                     PCI_FUNC(devfn), reg, val, size);
 207        spin_unlock_irqrestore(&cfgspace_lock, flags);
 208
 209        return err ? PCIBIOS_DEVICE_NOT_FOUND : PCIBIOS_SUCCESSFUL;
 210}
 211
 212static int ssb_pcicore_write_config(struct pci_bus *bus, unsigned int devfn,
 213                                    int reg, int size, u32 val)
 214{
 215        unsigned long flags;
 216        int err;
 217
 218        spin_lock_irqsave(&cfgspace_lock, flags);
 219        err = ssb_extpci_write_config(extpci_core, bus->number, PCI_SLOT(devfn),
 220                                      PCI_FUNC(devfn), reg, &val, size);
 221        spin_unlock_irqrestore(&cfgspace_lock, flags);
 222
 223        return err ? PCIBIOS_DEVICE_NOT_FOUND : PCIBIOS_SUCCESSFUL;
 224}
 225
 226static struct pci_ops ssb_pcicore_pciops = {
 227        .read   = ssb_pcicore_read_config,
 228        .write  = ssb_pcicore_write_config,
 229};
 230
 231static struct resource ssb_pcicore_mem_resource = {
 232        .name   = "SSB PCIcore external memory",
 233        .start  = SSB_PCI_DMA,
 234        .end    = SSB_PCI_DMA + SSB_PCI_DMA_SZ - 1,
 235        .flags  = IORESOURCE_MEM | IORESOURCE_PCI_FIXED,
 236};
 237
 238static struct resource ssb_pcicore_io_resource = {
 239        .name   = "SSB PCIcore external I/O",
 240        .start  = 0x100,
 241        .end    = 0x7FF,
 242        .flags  = IORESOURCE_IO | IORESOURCE_PCI_FIXED,
 243};
 244
 245static struct pci_controller ssb_pcicore_controller = {
 246        .pci_ops        = &ssb_pcicore_pciops,
 247        .io_resource    = &ssb_pcicore_io_resource,
 248        .mem_resource   = &ssb_pcicore_mem_resource,
 249};
 250
 251/* This function is called when doing a pci_enable_device().
 252 * We must first check if the device is a device on the PCI-core bridge. */
 253int ssb_pcicore_plat_dev_init(struct pci_dev *d)
 254{
 255        if (d->bus->ops != &ssb_pcicore_pciops) {
 256                /* This is not a device on the PCI-core bridge. */
 257                return -ENODEV;
 258        }
 259
 260        ssb_printk(KERN_INFO "PCI: Fixing up device %s\n",
 261                   pci_name(d));
 262
 263        /* Fix up interrupt lines */
 264        d->irq = ssb_mips_irq(extpci_core->dev) + 2;
 265        pci_write_config_byte(d, PCI_INTERRUPT_LINE, d->irq);
 266
 267        return 0;
 268}
 269
 270/* Early PCI fixup for a device on the PCI-core bridge. */
 271static void ssb_pcicore_fixup_pcibridge(struct pci_dev *dev)
 272{
 273        u8 lat;
 274
 275        if (dev->bus->ops != &ssb_pcicore_pciops) {
 276                /* This is not a device on the PCI-core bridge. */
 277                return;
 278        }
 279        if (dev->bus->number != 0 || PCI_SLOT(dev->devfn) != 0)
 280                return;
 281
 282        ssb_printk(KERN_INFO "PCI: Fixing up bridge %s\n", pci_name(dev));
 283
 284        /* Enable PCI bridge bus mastering and memory space */
 285        pci_set_master(dev);
 286        if (pcibios_enable_device(dev, ~0) < 0) {
 287                ssb_printk(KERN_ERR "PCI: SSB bridge enable failed\n");
 288                return;
 289        }
 290
 291        /* Enable PCI bridge BAR1 prefetch and burst */
 292        pci_write_config_dword(dev, SSB_BAR1_CONTROL, 3);
 293
 294        /* Make sure our latency is high enough to handle the devices behind us */
 295        lat = 168;
 296        ssb_printk(KERN_INFO "PCI: Fixing latency timer of device %s to %u\n",
 297                   pci_name(dev), lat);
 298        pci_write_config_byte(dev, PCI_LATENCY_TIMER, lat);
 299}
 300DECLARE_PCI_FIXUP_EARLY(PCI_ANY_ID, PCI_ANY_ID, ssb_pcicore_fixup_pcibridge);
 301
 302/* PCI device IRQ mapping. */
 303int ssb_pcicore_pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 304{
 305        if (dev->bus->ops != &ssb_pcicore_pciops) {
 306                /* This is not a device on the PCI-core bridge. */
 307                return -ENODEV;
 308        }
 309        return ssb_mips_irq(extpci_core->dev) + 2;
 310}
 311
 312static void ssb_pcicore_init_hostmode(struct ssb_pcicore *pc)
 313{
 314        u32 val;
 315
 316        if (WARN_ON(extpci_core))
 317                return;
 318        extpci_core = pc;
 319
 320        ssb_dprintk(KERN_INFO PFX "PCIcore in host mode found\n");
 321        /* Reset devices on the external PCI bus */
 322        val = SSB_PCICORE_CTL_RST_OE;
 323        val |= SSB_PCICORE_CTL_CLK_OE;
 324        pcicore_write32(pc, SSB_PCICORE_CTL, val);
 325        val |= SSB_PCICORE_CTL_CLK; /* Clock on */
 326        pcicore_write32(pc, SSB_PCICORE_CTL, val);
 327        udelay(150); /* Assertion time demanded by the PCI standard */
 328        val |= SSB_PCICORE_CTL_RST; /* Deassert RST# */
 329        pcicore_write32(pc, SSB_PCICORE_CTL, val);
 330        val = SSB_PCICORE_ARBCTL_INTERN;
 331        pcicore_write32(pc, SSB_PCICORE_ARBCTL, val);
 332        udelay(1); /* Assertion time demanded by the PCI standard */
 333
 334        if (pc->dev->bus->has_cardbus_slot) {
 335                ssb_dprintk(KERN_INFO PFX "CardBus slot detected\n");
 336                pc->cardbusmode = 1;
 337                /* GPIO 1 resets the bridge */
 338                ssb_gpio_out(pc->dev->bus, 1, 1);
 339                ssb_gpio_outen(pc->dev->bus, 1, 1);
 340                pcicore_write16(pc, SSB_PCICORE_SPROM(0),
 341                                pcicore_read16(pc, SSB_PCICORE_SPROM(0))
 342                                | 0x0400);
 343        }
 344
 345        /* 64MB I/O window */
 346        pcicore_write32(pc, SSB_PCICORE_SBTOPCI0,
 347                        SSB_PCICORE_SBTOPCI_IO);
 348        /* 64MB config space */
 349        pcicore_write32(pc, SSB_PCICORE_SBTOPCI1,
 350                        SSB_PCICORE_SBTOPCI_CFG0);
 351        /* 1GB memory window */
 352        pcicore_write32(pc, SSB_PCICORE_SBTOPCI2,
 353                        SSB_PCICORE_SBTOPCI_MEM | SSB_PCI_DMA);
 354
 355        /* Enable PCI bridge BAR0 prefetch and burst */
 356        val = PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;
 357        ssb_extpci_write_config(pc, 0, 0, 0, PCI_COMMAND, &val, 2);
 358        /* Clear error conditions */
 359        val = 0;
 360        ssb_extpci_write_config(pc, 0, 0, 0, PCI_STATUS, &val, 2);
 361
 362        /* Enable PCI interrupts */
 363        pcicore_write32(pc, SSB_PCICORE_IMASK,
 364                        SSB_PCICORE_IMASK_INTA);
 365
 366        /* Ok, ready to run, register it to the system.
 367         * The following needs change, if we want to port hostmode
 368         * to non-MIPS platform. */
 369        ssb_pcicore_controller.io_map_base = (unsigned long)ioremap_nocache(SSB_PCI_MEM, 0x04000000);
 370        set_io_port_base(ssb_pcicore_controller.io_map_base);
 371        /* Give some time to the PCI controller to configure itself with the new
 372         * values. Not waiting at this point causes crashes of the machine. */
 373        mdelay(10);
 374        register_pci_controller(&ssb_pcicore_controller);
 375}
 376
 377static int pcicore_is_in_hostmode(struct ssb_pcicore *pc)
 378{
 379        struct ssb_bus *bus = pc->dev->bus;
 380        u16 chipid_top;
 381        u32 tmp;
 382
 383        chipid_top = (bus->chip_id & 0xFF00);
 384        if (chipid_top != 0x4700 &&
 385            chipid_top != 0x5300)
 386                return 0;
 387
 388        if (bus->sprom.boardflags_lo & SSB_PCICORE_BFL_NOPCI)
 389                return 0;
 390
 391        /* The 200-pin BCM4712 package does not bond out PCI. Even when
 392         * PCI is bonded out, some boards may leave the pins floating. */
 393        if (bus->chip_id == 0x4712) {
 394                if (bus->chip_package == SSB_CHIPPACK_BCM4712S)
 395                        return 0;
 396                if (bus->chip_package == SSB_CHIPPACK_BCM4712M)
 397                        return 0;
 398        }
 399        if (bus->chip_id == 0x5350)
 400                return 0;
 401
 402        return !mips_busprobe32(tmp, (bus->mmio + (pc->dev->core_index * SSB_CORE_SIZE)));
 403}
 404#endif /* CONFIG_SSB_PCICORE_HOSTMODE */
 405
 406
 407/**************************************************
 408 * Generic and Clientmode operation code.
 409 **************************************************/
 410
 411static void ssb_pcicore_init_clientmode(struct ssb_pcicore *pc)
 412{
 413        /* Disable PCI interrupts. */
 414        ssb_write32(pc->dev, SSB_INTVEC, 0);
 415}
 416
 417void ssb_pcicore_init(struct ssb_pcicore *pc)
 418{
 419        struct ssb_device *dev = pc->dev;
 420        struct ssb_bus *bus;
 421
 422        if (!dev)
 423                return;
 424        bus = dev->bus;
 425        if (!ssb_device_is_enabled(dev))
 426                ssb_device_enable(dev, 0);
 427
 428#ifdef CONFIG_SSB_PCICORE_HOSTMODE
 429        pc->hostmode = pcicore_is_in_hostmode(pc);
 430        if (pc->hostmode)
 431                ssb_pcicore_init_hostmode(pc);
 432#endif /* CONFIG_SSB_PCICORE_HOSTMODE */
 433        if (!pc->hostmode)
 434                ssb_pcicore_init_clientmode(pc);
 435}
 436
 437static u32 ssb_pcie_read(struct ssb_pcicore *pc, u32 address)
 438{
 439        pcicore_write32(pc, 0x130, address);
 440        return pcicore_read32(pc, 0x134);
 441}
 442
 443static void ssb_pcie_write(struct ssb_pcicore *pc, u32 address, u32 data)
 444{
 445        pcicore_write32(pc, 0x130, address);
 446        pcicore_write32(pc, 0x134, data);
 447}
 448
 449static void ssb_pcie_mdio_write(struct ssb_pcicore *pc, u8 device,
 450                                u8 address, u16 data)
 451{
 452        const u16 mdio_control = 0x128;
 453        const u16 mdio_data = 0x12C;
 454        u32 v;
 455        int i;
 456
 457        v = 0x80; /* Enable Preamble Sequence */
 458        v |= 0x2; /* MDIO Clock Divisor */
 459        pcicore_write32(pc, mdio_control, v);
 460
 461        v = (1 << 30); /* Start of Transaction */
 462        v |= (1 << 28); /* Write Transaction */
 463        v |= (1 << 17); /* Turnaround */
 464        v |= (u32)device << 22;
 465        v |= (u32)address << 18;
 466        v |= data;
 467        pcicore_write32(pc, mdio_data, v);
 468        /* Wait for the device to complete the transaction */
 469        udelay(10);
 470        for (i = 0; i < 10; i++) {
 471                v = pcicore_read32(pc, mdio_control);
 472                if (v & 0x100 /* Trans complete */)
 473                        break;
 474                msleep(1);
 475        }
 476        pcicore_write32(pc, mdio_control, 0);
 477}
 478
 479static void ssb_broadcast_value(struct ssb_device *dev,
 480                                u32 address, u32 data)
 481{
 482        /* This is used for both, PCI and ChipCommon core, so be careful. */
 483        BUILD_BUG_ON(SSB_PCICORE_BCAST_ADDR != SSB_CHIPCO_BCAST_ADDR);
 484        BUILD_BUG_ON(SSB_PCICORE_BCAST_DATA != SSB_CHIPCO_BCAST_DATA);
 485
 486        ssb_write32(dev, SSB_PCICORE_BCAST_ADDR, address);
 487        ssb_read32(dev, SSB_PCICORE_BCAST_ADDR); /* flush */
 488        ssb_write32(dev, SSB_PCICORE_BCAST_DATA, data);
 489        ssb_read32(dev, SSB_PCICORE_BCAST_DATA); /* flush */
 490}
 491
 492static void ssb_commit_settings(struct ssb_bus *bus)
 493{
 494        struct ssb_device *dev;
 495
 496        dev = bus->chipco.dev ? bus->chipco.dev : bus->pcicore.dev;
 497        if (WARN_ON(!dev))
 498                return;
 499        /* This forces an update of the cached registers. */
 500        ssb_broadcast_value(dev, 0xFD8, 0);
 501}
 502
 503int ssb_pcicore_dev_irqvecs_enable(struct ssb_pcicore *pc,
 504                                   struct ssb_device *dev)
 505{
 506        struct ssb_device *pdev = pc->dev;
 507        struct ssb_bus *bus;
 508        int err = 0;
 509        u32 tmp;
 510
 511        if (dev->bus->bustype != SSB_BUSTYPE_PCI) {
 512                /* This SSB device is not on a PCI host-bus. So the IRQs are
 513                 * not routed through the PCI core.
 514                 * So we must not enable routing through the PCI core. */
 515                goto out;
 516        }
 517
 518        if (!pdev)
 519                goto out;
 520        bus = pdev->bus;
 521
 522        might_sleep_if(pdev->id.coreid != SSB_DEV_PCI);
 523
 524        /* Enable interrupts for this device. */
 525        if ((pdev->id.revision >= 6) || (pdev->id.coreid == SSB_DEV_PCIE)) {
 526                u32 coremask;
 527
 528                /* Calculate the "coremask" for the device. */
 529                coremask = (1 << dev->core_index);
 530
 531                SSB_WARN_ON(bus->bustype != SSB_BUSTYPE_PCI);
 532                err = pci_read_config_dword(bus->host_pci, SSB_PCI_IRQMASK, &tmp);
 533                if (err)
 534                        goto out;
 535                tmp |= coremask << 8;
 536                err = pci_write_config_dword(bus->host_pci, SSB_PCI_IRQMASK, tmp);
 537                if (err)
 538                        goto out;
 539        } else {
 540                u32 intvec;
 541
 542                intvec = ssb_read32(pdev, SSB_INTVEC);
 543                tmp = ssb_read32(dev, SSB_TPSFLAG);
 544                tmp &= SSB_TPSFLAG_BPFLAG;
 545                intvec |= (1 << tmp);
 546                ssb_write32(pdev, SSB_INTVEC, intvec);
 547        }
 548
 549        /* Setup PCIcore operation. */
 550        if (pc->setup_done)
 551                goto out;
 552        if (pdev->id.coreid == SSB_DEV_PCI) {
 553                tmp = pcicore_read32(pc, SSB_PCICORE_SBTOPCI2);
 554                tmp |= SSB_PCICORE_SBTOPCI_PREF;
 555                tmp |= SSB_PCICORE_SBTOPCI_BURST;
 556                pcicore_write32(pc, SSB_PCICORE_SBTOPCI2, tmp);
 557
 558                if (pdev->id.revision < 5) {
 559                        tmp = ssb_read32(pdev, SSB_IMCFGLO);
 560                        tmp &= ~SSB_IMCFGLO_SERTO;
 561                        tmp |= 2;
 562                        tmp &= ~SSB_IMCFGLO_REQTO;
 563                        tmp |= 3 << SSB_IMCFGLO_REQTO_SHIFT;
 564                        ssb_write32(pdev, SSB_IMCFGLO, tmp);
 565                        ssb_commit_settings(bus);
 566                } else if (pdev->id.revision >= 11) {
 567                        tmp = pcicore_read32(pc, SSB_PCICORE_SBTOPCI2);
 568                        tmp |= SSB_PCICORE_SBTOPCI_MRM;
 569                        pcicore_write32(pc, SSB_PCICORE_SBTOPCI2, tmp);
 570                }
 571        } else {
 572                WARN_ON(pdev->id.coreid != SSB_DEV_PCIE);
 573                //TODO: Better make defines for all these magic PCIE values.
 574                if ((pdev->id.revision == 0) || (pdev->id.revision == 1)) {
 575                        /* TLP Workaround register. */
 576                        tmp = ssb_pcie_read(pc, 0x4);
 577                        tmp |= 0x8;
 578                        ssb_pcie_write(pc, 0x4, tmp);
 579                }
 580                if (pdev->id.revision == 0) {
 581                        const u8 serdes_rx_device = 0x1F;
 582
 583                        ssb_pcie_mdio_write(pc, serdes_rx_device,
 584                                            2 /* Timer */, 0x8128);
 585                        ssb_pcie_mdio_write(pc, serdes_rx_device,
 586                                            6 /* CDR */, 0x0100);
 587                        ssb_pcie_mdio_write(pc, serdes_rx_device,
 588                                            7 /* CDR BW */, 0x1466);
 589                } else if (pdev->id.revision == 1) {
 590                        /* DLLP Link Control register. */
 591                        tmp = ssb_pcie_read(pc, 0x100);
 592                        tmp |= 0x40;
 593                        ssb_pcie_write(pc, 0x100, tmp);
 594                }
 595        }
 596        pc->setup_done = 1;
 597out:
 598        return err;
 599}
 600EXPORT_SYMBOL(ssb_pcicore_dev_irqvecs_enable);
 601