linux/drivers/bcma/scan.c
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   1/*
   2 * Broadcom specific AMBA
   3 * Bus scanning
   4 *
   5 * Licensed under the GNU/GPL. See COPYING for details.
   6 */
   7
   8#include "scan.h"
   9#include "bcma_private.h"
  10
  11#include <linux/bcma/bcma.h>
  12#include <linux/bcma/bcma_regs.h>
  13#include <linux/pci.h>
  14#include <linux/io.h>
  15#include <linux/dma-mapping.h>
  16#include <linux/slab.h>
  17
  18struct bcma_device_id_name {
  19        u16 id;
  20        const char *name;
  21};
  22
  23static const struct bcma_device_id_name bcma_arm_device_names[] = {
  24        { BCMA_CORE_4706_MAC_GBIT_COMMON, "BCM4706 GBit MAC Common" },
  25        { BCMA_CORE_ARM_1176, "ARM 1176" },
  26        { BCMA_CORE_ARM_7TDMI, "ARM 7TDMI" },
  27        { BCMA_CORE_ARM_CM3, "ARM CM3" },
  28};
  29
  30static const struct bcma_device_id_name bcma_bcm_device_names[] = {
  31        { BCMA_CORE_OOB_ROUTER, "OOB Router" },
  32        { BCMA_CORE_4706_CHIPCOMMON, "BCM4706 ChipCommon" },
  33        { BCMA_CORE_4706_SOC_RAM, "BCM4706 SOC RAM" },
  34        { BCMA_CORE_4706_MAC_GBIT, "BCM4706 GBit MAC" },
  35        { BCMA_CORE_PCIEG2, "PCIe Gen 2" },
  36        { BCMA_CORE_DMA, "DMA" },
  37        { BCMA_CORE_SDIO3, "SDIO3" },
  38        { BCMA_CORE_USB20, "USB 2.0" },
  39        { BCMA_CORE_USB30, "USB 3.0" },
  40        { BCMA_CORE_A9JTAG, "ARM Cortex A9 JTAG" },
  41        { BCMA_CORE_DDR23, "Denali DDR2/DDR3 memory controller" },
  42        { BCMA_CORE_ROM, "ROM" },
  43        { BCMA_CORE_NAND, "NAND flash controller" },
  44        { BCMA_CORE_QSPI, "SPI flash controller" },
  45        { BCMA_CORE_CHIPCOMMON_B, "Chipcommon B" },
  46        { BCMA_CORE_ARMCA9, "ARM Cortex A9 core (ihost)" },
  47        { BCMA_CORE_AMEMC, "AMEMC (DDR)" },
  48        { BCMA_CORE_ALTA, "ALTA (I2S)" },
  49        { BCMA_CORE_INVALID, "Invalid" },
  50        { BCMA_CORE_CHIPCOMMON, "ChipCommon" },
  51        { BCMA_CORE_ILINE20, "ILine 20" },
  52        { BCMA_CORE_SRAM, "SRAM" },
  53        { BCMA_CORE_SDRAM, "SDRAM" },
  54        { BCMA_CORE_PCI, "PCI" },
  55        { BCMA_CORE_ETHERNET, "Fast Ethernet" },
  56        { BCMA_CORE_V90, "V90" },
  57        { BCMA_CORE_USB11_HOSTDEV, "USB 1.1 Hostdev" },
  58        { BCMA_CORE_ADSL, "ADSL" },
  59        { BCMA_CORE_ILINE100, "ILine 100" },
  60        { BCMA_CORE_IPSEC, "IPSEC" },
  61        { BCMA_CORE_UTOPIA, "UTOPIA" },
  62        { BCMA_CORE_PCMCIA, "PCMCIA" },
  63        { BCMA_CORE_INTERNAL_MEM, "Internal Memory" },
  64        { BCMA_CORE_MEMC_SDRAM, "MEMC SDRAM" },
  65        { BCMA_CORE_OFDM, "OFDM" },
  66        { BCMA_CORE_EXTIF, "EXTIF" },
  67        { BCMA_CORE_80211, "IEEE 802.11" },
  68        { BCMA_CORE_PHY_A, "PHY A" },
  69        { BCMA_CORE_PHY_B, "PHY B" },
  70        { BCMA_CORE_PHY_G, "PHY G" },
  71        { BCMA_CORE_USB11_HOST, "USB 1.1 Host" },
  72        { BCMA_CORE_USB11_DEV, "USB 1.1 Device" },
  73        { BCMA_CORE_USB20_HOST, "USB 2.0 Host" },
  74        { BCMA_CORE_USB20_DEV, "USB 2.0 Device" },
  75        { BCMA_CORE_SDIO_HOST, "SDIO Host" },
  76        { BCMA_CORE_ROBOSWITCH, "Roboswitch" },
  77        { BCMA_CORE_PARA_ATA, "PATA" },
  78        { BCMA_CORE_SATA_XORDMA, "SATA XOR-DMA" },
  79        { BCMA_CORE_ETHERNET_GBIT, "GBit Ethernet" },
  80        { BCMA_CORE_PCIE, "PCIe" },
  81        { BCMA_CORE_PHY_N, "PHY N" },
  82        { BCMA_CORE_SRAM_CTL, "SRAM Controller" },
  83        { BCMA_CORE_MINI_MACPHY, "Mini MACPHY" },
  84        { BCMA_CORE_PHY_LP, "PHY LP" },
  85        { BCMA_CORE_PMU, "PMU" },
  86        { BCMA_CORE_PHY_SSN, "PHY SSN" },
  87        { BCMA_CORE_SDIO_DEV, "SDIO Device" },
  88        { BCMA_CORE_PHY_HT, "PHY HT" },
  89        { BCMA_CORE_MAC_GBIT, "GBit MAC" },
  90        { BCMA_CORE_DDR12_MEM_CTL, "DDR1/DDR2 Memory Controller" },
  91        { BCMA_CORE_PCIE_RC, "PCIe Root Complex" },
  92        { BCMA_CORE_OCP_OCP_BRIDGE, "OCP to OCP Bridge" },
  93        { BCMA_CORE_SHARED_COMMON, "Common Shared" },
  94        { BCMA_CORE_OCP_AHB_BRIDGE, "OCP to AHB Bridge" },
  95        { BCMA_CORE_SPI_HOST, "SPI Host" },
  96        { BCMA_CORE_I2S, "I2S" },
  97        { BCMA_CORE_SDR_DDR1_MEM_CTL, "SDR/DDR1 Memory Controller" },
  98        { BCMA_CORE_SHIM, "SHIM" },
  99        { BCMA_CORE_PCIE2, "PCIe Gen2" },
 100        { BCMA_CORE_ARM_CR4, "ARM CR4" },
 101        { BCMA_CORE_DEFAULT, "Default" },
 102};
 103
 104static const struct bcma_device_id_name bcma_mips_device_names[] = {
 105        { BCMA_CORE_MIPS, "MIPS" },
 106        { BCMA_CORE_MIPS_3302, "MIPS 3302" },
 107        { BCMA_CORE_MIPS_74K, "MIPS 74K" },
 108};
 109
 110static const char *bcma_device_name(const struct bcma_device_id *id)
 111{
 112        const struct bcma_device_id_name *names;
 113        int size, i;
 114
 115        /* search manufacturer specific names */
 116        switch (id->manuf) {
 117        case BCMA_MANUF_ARM:
 118                names = bcma_arm_device_names;
 119                size = ARRAY_SIZE(bcma_arm_device_names);
 120                break;
 121        case BCMA_MANUF_BCM:
 122                names = bcma_bcm_device_names;
 123                size = ARRAY_SIZE(bcma_bcm_device_names);
 124                break;
 125        case BCMA_MANUF_MIPS:
 126                names = bcma_mips_device_names;
 127                size = ARRAY_SIZE(bcma_mips_device_names);
 128                break;
 129        default:
 130                return "UNKNOWN";
 131        }
 132
 133        for (i = 0; i < size; i++) {
 134                if (names[i].id == id->id)
 135                        return names[i].name;
 136        }
 137
 138        return "UNKNOWN";
 139}
 140
 141static u32 bcma_scan_read32(struct bcma_bus *bus, u8 current_coreidx,
 142                       u16 offset)
 143{
 144        return readl(bus->mmio + offset);
 145}
 146
 147static void bcma_scan_switch_core(struct bcma_bus *bus, u32 addr)
 148{
 149        if (bus->hosttype == BCMA_HOSTTYPE_PCI)
 150                pci_write_config_dword(bus->host_pci, BCMA_PCI_BAR0_WIN,
 151                                       addr);
 152}
 153
 154static u32 bcma_erom_get_ent(struct bcma_bus *bus, u32 __iomem **eromptr)
 155{
 156        u32 ent = readl(*eromptr);
 157        (*eromptr)++;
 158        return ent;
 159}
 160
 161static void bcma_erom_push_ent(u32 __iomem **eromptr)
 162{
 163        (*eromptr)--;
 164}
 165
 166static s32 bcma_erom_get_ci(struct bcma_bus *bus, u32 __iomem **eromptr)
 167{
 168        u32 ent = bcma_erom_get_ent(bus, eromptr);
 169        if (!(ent & SCAN_ER_VALID))
 170                return -ENOENT;
 171        if ((ent & SCAN_ER_TAG) != SCAN_ER_TAG_CI)
 172                return -ENOENT;
 173        return ent;
 174}
 175
 176static bool bcma_erom_is_end(struct bcma_bus *bus, u32 __iomem **eromptr)
 177{
 178        u32 ent = bcma_erom_get_ent(bus, eromptr);
 179        bcma_erom_push_ent(eromptr);
 180        return (ent == (SCAN_ER_TAG_END | SCAN_ER_VALID));
 181}
 182
 183static bool bcma_erom_is_bridge(struct bcma_bus *bus, u32 __iomem **eromptr)
 184{
 185        u32 ent = bcma_erom_get_ent(bus, eromptr);
 186        bcma_erom_push_ent(eromptr);
 187        return (((ent & SCAN_ER_VALID)) &&
 188                ((ent & SCAN_ER_TAGX) == SCAN_ER_TAG_ADDR) &&
 189                ((ent & SCAN_ADDR_TYPE) == SCAN_ADDR_TYPE_BRIDGE));
 190}
 191
 192static void bcma_erom_skip_component(struct bcma_bus *bus, u32 __iomem **eromptr)
 193{
 194        u32 ent;
 195        while (1) {
 196                ent = bcma_erom_get_ent(bus, eromptr);
 197                if ((ent & SCAN_ER_VALID) &&
 198                    ((ent & SCAN_ER_TAG) == SCAN_ER_TAG_CI))
 199                        break;
 200                if (ent == (SCAN_ER_TAG_END | SCAN_ER_VALID))
 201                        break;
 202        }
 203        bcma_erom_push_ent(eromptr);
 204}
 205
 206static s32 bcma_erom_get_mst_port(struct bcma_bus *bus, u32 __iomem **eromptr)
 207{
 208        u32 ent = bcma_erom_get_ent(bus, eromptr);
 209        if (!(ent & SCAN_ER_VALID))
 210                return -ENOENT;
 211        if ((ent & SCAN_ER_TAG) != SCAN_ER_TAG_MP)
 212                return -ENOENT;
 213        return ent;
 214}
 215
 216static u32 bcma_erom_get_addr_desc(struct bcma_bus *bus, u32 __iomem **eromptr,
 217                                  u32 type, u8 port)
 218{
 219        u32 addrl, addrh, sizel, sizeh = 0;
 220        u32 size;
 221
 222        u32 ent = bcma_erom_get_ent(bus, eromptr);
 223        if ((!(ent & SCAN_ER_VALID)) ||
 224            ((ent & SCAN_ER_TAGX) != SCAN_ER_TAG_ADDR) ||
 225            ((ent & SCAN_ADDR_TYPE) != type) ||
 226            (((ent & SCAN_ADDR_PORT) >> SCAN_ADDR_PORT_SHIFT) != port)) {
 227                bcma_erom_push_ent(eromptr);
 228                return (u32)-EINVAL;
 229        }
 230
 231        addrl = ent & SCAN_ADDR_ADDR;
 232        if (ent & SCAN_ADDR_AG32)
 233                addrh = bcma_erom_get_ent(bus, eromptr);
 234        else
 235                addrh = 0;
 236
 237        if ((ent & SCAN_ADDR_SZ) == SCAN_ADDR_SZ_SZD) {
 238                size = bcma_erom_get_ent(bus, eromptr);
 239                sizel = size & SCAN_SIZE_SZ;
 240                if (size & SCAN_SIZE_SG32)
 241                        sizeh = bcma_erom_get_ent(bus, eromptr);
 242        } else
 243                sizel = SCAN_ADDR_SZ_BASE <<
 244                                ((ent & SCAN_ADDR_SZ) >> SCAN_ADDR_SZ_SHIFT);
 245
 246        return addrl;
 247}
 248
 249static struct bcma_device *bcma_find_core_by_index(struct bcma_bus *bus,
 250                                                   u16 index)
 251{
 252        struct bcma_device *core;
 253
 254        list_for_each_entry(core, &bus->cores, list) {
 255                if (core->core_index == index)
 256                        return core;
 257        }
 258        return NULL;
 259}
 260
 261static struct bcma_device *bcma_find_core_reverse(struct bcma_bus *bus, u16 coreid)
 262{
 263        struct bcma_device *core;
 264
 265        list_for_each_entry_reverse(core, &bus->cores, list) {
 266                if (core->id.id == coreid)
 267                        return core;
 268        }
 269        return NULL;
 270}
 271
 272#define IS_ERR_VALUE_U32(x) ((x) >= (u32)-MAX_ERRNO)
 273
 274static int bcma_get_next_core(struct bcma_bus *bus, u32 __iomem **eromptr,
 275                              struct bcma_device_id *match, int core_num,
 276                              struct bcma_device *core)
 277{
 278        u32 tmp;
 279        u8 i, j;
 280        s32 cia, cib;
 281        u8 ports[2], wrappers[2];
 282
 283        /* get CIs */
 284        cia = bcma_erom_get_ci(bus, eromptr);
 285        if (cia < 0) {
 286                bcma_erom_push_ent(eromptr);
 287                if (bcma_erom_is_end(bus, eromptr))
 288                        return -ESPIPE;
 289                return -EILSEQ;
 290        }
 291        cib = bcma_erom_get_ci(bus, eromptr);
 292        if (cib < 0)
 293                return -EILSEQ;
 294
 295        /* parse CIs */
 296        core->id.class = (cia & SCAN_CIA_CLASS) >> SCAN_CIA_CLASS_SHIFT;
 297        core->id.id = (cia & SCAN_CIA_ID) >> SCAN_CIA_ID_SHIFT;
 298        core->id.manuf = (cia & SCAN_CIA_MANUF) >> SCAN_CIA_MANUF_SHIFT;
 299        ports[0] = (cib & SCAN_CIB_NMP) >> SCAN_CIB_NMP_SHIFT;
 300        ports[1] = (cib & SCAN_CIB_NSP) >> SCAN_CIB_NSP_SHIFT;
 301        wrappers[0] = (cib & SCAN_CIB_NMW) >> SCAN_CIB_NMW_SHIFT;
 302        wrappers[1] = (cib & SCAN_CIB_NSW) >> SCAN_CIB_NSW_SHIFT;
 303        core->id.rev = (cib & SCAN_CIB_REV) >> SCAN_CIB_REV_SHIFT;
 304
 305        if (((core->id.manuf == BCMA_MANUF_ARM) &&
 306             (core->id.id == 0xFFF)) ||
 307            (ports[1] == 0)) {
 308                bcma_erom_skip_component(bus, eromptr);
 309                return -ENXIO;
 310        }
 311
 312        /* check if component is a core at all */
 313        if (wrappers[0] + wrappers[1] == 0) {
 314                /* Some specific cores don't need wrappers */
 315                switch (core->id.id) {
 316                case BCMA_CORE_4706_MAC_GBIT_COMMON:
 317                /* Not used yet: case BCMA_CORE_OOB_ROUTER: */
 318                        break;
 319                default:
 320                        bcma_erom_skip_component(bus, eromptr);
 321                        return -ENXIO;
 322                }
 323        }
 324
 325        if (bcma_erom_is_bridge(bus, eromptr)) {
 326                bcma_erom_skip_component(bus, eromptr);
 327                return -ENXIO;
 328        }
 329
 330        if (bcma_find_core_by_index(bus, core_num)) {
 331                bcma_erom_skip_component(bus, eromptr);
 332                return -ENODEV;
 333        }
 334
 335        if (match && ((match->manuf != BCMA_ANY_MANUF &&
 336              match->manuf != core->id.manuf) ||
 337             (match->id != BCMA_ANY_ID && match->id != core->id.id) ||
 338             (match->rev != BCMA_ANY_REV && match->rev != core->id.rev) ||
 339             (match->class != BCMA_ANY_CLASS && match->class != core->id.class)
 340            )) {
 341                bcma_erom_skip_component(bus, eromptr);
 342                return -ENODEV;
 343        }
 344
 345        /* get & parse master ports */
 346        for (i = 0; i < ports[0]; i++) {
 347                s32 mst_port_d = bcma_erom_get_mst_port(bus, eromptr);
 348                if (mst_port_d < 0)
 349                        return -EILSEQ;
 350        }
 351
 352        /* First Slave Address Descriptor should be port 0:
 353         * the main register space for the core
 354         */
 355        tmp = bcma_erom_get_addr_desc(bus, eromptr, SCAN_ADDR_TYPE_SLAVE, 0);
 356        if (tmp == 0 || IS_ERR_VALUE_U32(tmp)) {
 357                /* Try again to see if it is a bridge */
 358                tmp = bcma_erom_get_addr_desc(bus, eromptr,
 359                                              SCAN_ADDR_TYPE_BRIDGE, 0);
 360                if (tmp == 0 || IS_ERR_VALUE_U32(tmp)) {
 361                        return -EILSEQ;
 362                } else {
 363                        bcma_info(bus, "Bridge found\n");
 364                        return -ENXIO;
 365                }
 366        }
 367        core->addr = tmp;
 368
 369        /* get & parse slave ports */
 370        for (i = 0; i < ports[1]; i++) {
 371                for (j = 0; ; j++) {
 372                        tmp = bcma_erom_get_addr_desc(bus, eromptr,
 373                                SCAN_ADDR_TYPE_SLAVE, i);
 374                        if (IS_ERR_VALUE_U32(tmp)) {
 375                                /* no more entries for port _i_ */
 376                                /* pr_debug("erom: slave port %d "
 377                                 * "has %d descriptors\n", i, j); */
 378                                break;
 379                        } else {
 380                                if (i == 0 && j == 0)
 381                                        core->addr1 = tmp;
 382                        }
 383                }
 384        }
 385
 386        /* get & parse master wrappers */
 387        for (i = 0; i < wrappers[0]; i++) {
 388                for (j = 0; ; j++) {
 389                        tmp = bcma_erom_get_addr_desc(bus, eromptr,
 390                                SCAN_ADDR_TYPE_MWRAP, i);
 391                        if (IS_ERR_VALUE_U32(tmp)) {
 392                                /* no more entries for port _i_ */
 393                                /* pr_debug("erom: master wrapper %d "
 394                                 * "has %d descriptors\n", i, j); */
 395                                break;
 396                        } else {
 397                                if (i == 0 && j == 0)
 398                                        core->wrap = tmp;
 399                        }
 400                }
 401        }
 402
 403        /* get & parse slave wrappers */
 404        for (i = 0; i < wrappers[1]; i++) {
 405                u8 hack = (ports[1] == 1) ? 0 : 1;
 406                for (j = 0; ; j++) {
 407                        tmp = bcma_erom_get_addr_desc(bus, eromptr,
 408                                SCAN_ADDR_TYPE_SWRAP, i + hack);
 409                        if (IS_ERR_VALUE_U32(tmp)) {
 410                                /* no more entries for port _i_ */
 411                                /* pr_debug("erom: master wrapper %d "
 412                                 * has %d descriptors\n", i, j); */
 413                                break;
 414                        } else {
 415                                if (wrappers[0] == 0 && !i && !j)
 416                                        core->wrap = tmp;
 417                        }
 418                }
 419        }
 420        if (bus->hosttype == BCMA_HOSTTYPE_SOC) {
 421                core->io_addr = ioremap_nocache(core->addr, BCMA_CORE_SIZE);
 422                if (!core->io_addr)
 423                        return -ENOMEM;
 424                core->io_wrap = ioremap_nocache(core->wrap, BCMA_CORE_SIZE);
 425                if (!core->io_wrap) {
 426                        iounmap(core->io_addr);
 427                        return -ENOMEM;
 428                }
 429        }
 430        return 0;
 431}
 432
 433void bcma_init_bus(struct bcma_bus *bus)
 434{
 435        s32 tmp;
 436        struct bcma_chipinfo *chipinfo = &(bus->chipinfo);
 437
 438        if (bus->init_done)
 439                return;
 440
 441        INIT_LIST_HEAD(&bus->cores);
 442        bus->nr_cores = 0;
 443
 444        bcma_scan_switch_core(bus, BCMA_ADDR_BASE);
 445
 446        tmp = bcma_scan_read32(bus, 0, BCMA_CC_ID);
 447        chipinfo->id = (tmp & BCMA_CC_ID_ID) >> BCMA_CC_ID_ID_SHIFT;
 448        chipinfo->rev = (tmp & BCMA_CC_ID_REV) >> BCMA_CC_ID_REV_SHIFT;
 449        chipinfo->pkg = (tmp & BCMA_CC_ID_PKG) >> BCMA_CC_ID_PKG_SHIFT;
 450        bcma_info(bus, "Found chip with id 0x%04X, rev 0x%02X and package 0x%02X\n",
 451                  chipinfo->id, chipinfo->rev, chipinfo->pkg);
 452
 453        bus->init_done = true;
 454}
 455
 456int bcma_bus_scan(struct bcma_bus *bus)
 457{
 458        u32 erombase;
 459        u32 __iomem *eromptr, *eromend;
 460
 461        int err, core_num = 0;
 462
 463        bcma_init_bus(bus);
 464
 465        erombase = bcma_scan_read32(bus, 0, BCMA_CC_EROM);
 466        if (bus->hosttype == BCMA_HOSTTYPE_SOC) {
 467                eromptr = ioremap_nocache(erombase, BCMA_CORE_SIZE);
 468                if (!eromptr)
 469                        return -ENOMEM;
 470        } else {
 471                eromptr = bus->mmio;
 472        }
 473
 474        eromend = eromptr + BCMA_CORE_SIZE / sizeof(u32);
 475
 476        bcma_scan_switch_core(bus, erombase);
 477
 478        while (eromptr < eromend) {
 479                struct bcma_device *other_core;
 480                struct bcma_device *core = kzalloc(sizeof(*core), GFP_KERNEL);
 481                if (!core) {
 482                        err = -ENOMEM;
 483                        goto out;
 484                }
 485                INIT_LIST_HEAD(&core->list);
 486                core->bus = bus;
 487
 488                err = bcma_get_next_core(bus, &eromptr, NULL, core_num, core);
 489                if (err < 0) {
 490                        kfree(core);
 491                        if (err == -ENODEV) {
 492                                core_num++;
 493                                continue;
 494                        } else if (err == -ENXIO) {
 495                                continue;
 496                        } else if (err == -ESPIPE) {
 497                                break;
 498                        }
 499                        goto out;
 500                }
 501
 502                core->core_index = core_num++;
 503                bus->nr_cores++;
 504                other_core = bcma_find_core_reverse(bus, core->id.id);
 505                core->core_unit = (other_core == NULL) ? 0 : other_core->core_unit + 1;
 506
 507                bcma_info(bus, "Core %d found: %s (manuf 0x%03X, id 0x%03X, rev 0x%02X, class 0x%X)\n",
 508                          core->core_index, bcma_device_name(&core->id),
 509                          core->id.manuf, core->id.id, core->id.rev,
 510                          core->id.class);
 511
 512                list_add_tail(&core->list, &bus->cores);
 513        }
 514
 515        err = 0;
 516out:
 517        if (bus->hosttype == BCMA_HOSTTYPE_SOC)
 518                iounmap(eromptr);
 519
 520        return err;
 521}
 522
 523int __init bcma_bus_scan_early(struct bcma_bus *bus,
 524                               struct bcma_device_id *match,
 525                               struct bcma_device *core)
 526{
 527        u32 erombase;
 528        u32 __iomem *eromptr, *eromend;
 529
 530        int err = -ENODEV;
 531        int core_num = 0;
 532
 533        erombase = bcma_scan_read32(bus, 0, BCMA_CC_EROM);
 534        if (bus->hosttype == BCMA_HOSTTYPE_SOC) {
 535                eromptr = ioremap_nocache(erombase, BCMA_CORE_SIZE);
 536                if (!eromptr)
 537                        return -ENOMEM;
 538        } else {
 539                eromptr = bus->mmio;
 540        }
 541
 542        eromend = eromptr + BCMA_CORE_SIZE / sizeof(u32);
 543
 544        bcma_scan_switch_core(bus, erombase);
 545
 546        while (eromptr < eromend) {
 547                memset(core, 0, sizeof(*core));
 548                INIT_LIST_HEAD(&core->list);
 549                core->bus = bus;
 550
 551                err = bcma_get_next_core(bus, &eromptr, match, core_num, core);
 552                if (err == -ENODEV) {
 553                        core_num++;
 554                        continue;
 555                } else if (err == -ENXIO)
 556                        continue;
 557                else if (err == -ESPIPE)
 558                        break;
 559                else if (err < 0)
 560                        goto out;
 561
 562                core->core_index = core_num++;
 563                bus->nr_cores++;
 564                bcma_info(bus, "Core %d found: %s (manuf 0x%03X, id 0x%03X, rev 0x%02X, class 0x%X)\n",
 565                          core->core_index, bcma_device_name(&core->id),
 566                          core->id.manuf, core->id.id, core->id.rev,
 567                          core->id.class);
 568
 569                list_add_tail(&core->list, &bus->cores);
 570                err = 0;
 571                break;
 572        }
 573
 574out:
 575        if (bus->hosttype == BCMA_HOSTTYPE_SOC)
 576                iounmap(eromptr);
 577
 578        return err;
 579}
 580
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