linux/drivers/bcma/scan.c
<<
>>
Prefs
   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_AMEMC, "AMEMC (DDR)" },
  36        { BCMA_CORE_ALTA, "ALTA (I2S)" },
  37        { BCMA_CORE_INVALID, "Invalid" },
  38        { BCMA_CORE_CHIPCOMMON, "ChipCommon" },
  39        { BCMA_CORE_ILINE20, "ILine 20" },
  40        { BCMA_CORE_SRAM, "SRAM" },
  41        { BCMA_CORE_SDRAM, "SDRAM" },
  42        { BCMA_CORE_PCI, "PCI" },
  43        { BCMA_CORE_ETHERNET, "Fast Ethernet" },
  44        { BCMA_CORE_V90, "V90" },
  45        { BCMA_CORE_USB11_HOSTDEV, "USB 1.1 Hostdev" },
  46        { BCMA_CORE_ADSL, "ADSL" },
  47        { BCMA_CORE_ILINE100, "ILine 100" },
  48        { BCMA_CORE_IPSEC, "IPSEC" },
  49        { BCMA_CORE_UTOPIA, "UTOPIA" },
  50        { BCMA_CORE_PCMCIA, "PCMCIA" },
  51        { BCMA_CORE_INTERNAL_MEM, "Internal Memory" },
  52        { BCMA_CORE_MEMC_SDRAM, "MEMC SDRAM" },
  53        { BCMA_CORE_OFDM, "OFDM" },
  54        { BCMA_CORE_EXTIF, "EXTIF" },
  55        { BCMA_CORE_80211, "IEEE 802.11" },
  56        { BCMA_CORE_PHY_A, "PHY A" },
  57        { BCMA_CORE_PHY_B, "PHY B" },
  58        { BCMA_CORE_PHY_G, "PHY G" },
  59        { BCMA_CORE_USB11_HOST, "USB 1.1 Host" },
  60        { BCMA_CORE_USB11_DEV, "USB 1.1 Device" },
  61        { BCMA_CORE_USB20_HOST, "USB 2.0 Host" },
  62        { BCMA_CORE_USB20_DEV, "USB 2.0 Device" },
  63        { BCMA_CORE_SDIO_HOST, "SDIO Host" },
  64        { BCMA_CORE_ROBOSWITCH, "Roboswitch" },
  65        { BCMA_CORE_PARA_ATA, "PATA" },
  66        { BCMA_CORE_SATA_XORDMA, "SATA XOR-DMA" },
  67        { BCMA_CORE_ETHERNET_GBIT, "GBit Ethernet" },
  68        { BCMA_CORE_PCIE, "PCIe" },
  69        { BCMA_CORE_PHY_N, "PHY N" },
  70        { BCMA_CORE_SRAM_CTL, "SRAM Controller" },
  71        { BCMA_CORE_MINI_MACPHY, "Mini MACPHY" },
  72        { BCMA_CORE_PHY_LP, "PHY LP" },
  73        { BCMA_CORE_PMU, "PMU" },
  74        { BCMA_CORE_PHY_SSN, "PHY SSN" },
  75        { BCMA_CORE_SDIO_DEV, "SDIO Device" },
  76        { BCMA_CORE_PHY_HT, "PHY HT" },
  77        { BCMA_CORE_MAC_GBIT, "GBit MAC" },
  78        { BCMA_CORE_DDR12_MEM_CTL, "DDR1/DDR2 Memory Controller" },
  79        { BCMA_CORE_PCIE_RC, "PCIe Root Complex" },
  80        { BCMA_CORE_OCP_OCP_BRIDGE, "OCP to OCP Bridge" },
  81        { BCMA_CORE_SHARED_COMMON, "Common Shared" },
  82        { BCMA_CORE_OCP_AHB_BRIDGE, "OCP to AHB Bridge" },
  83        { BCMA_CORE_SPI_HOST, "SPI Host" },
  84        { BCMA_CORE_I2S, "I2S" },
  85        { BCMA_CORE_SDR_DDR1_MEM_CTL, "SDR/DDR1 Memory Controller" },
  86        { BCMA_CORE_SHIM, "SHIM" },
  87        { BCMA_CORE_PCIE2, "PCIe Gen2" },
  88        { BCMA_CORE_ARM_CR4, "ARM CR4" },
  89        { BCMA_CORE_DEFAULT, "Default" },
  90};
  91
  92static const struct bcma_device_id_name bcma_mips_device_names[] = {
  93        { BCMA_CORE_MIPS, "MIPS" },
  94        { BCMA_CORE_MIPS_3302, "MIPS 3302" },
  95        { BCMA_CORE_MIPS_74K, "MIPS 74K" },
  96};
  97
  98static const char *bcma_device_name(const struct bcma_device_id *id)
  99{
 100        const struct bcma_device_id_name *names;
 101        int size, i;
 102
 103        /* search manufacturer specific names */
 104        switch (id->manuf) {
 105        case BCMA_MANUF_ARM:
 106                names = bcma_arm_device_names;
 107                size = ARRAY_SIZE(bcma_arm_device_names);
 108                break;
 109        case BCMA_MANUF_BCM:
 110                names = bcma_bcm_device_names;
 111                size = ARRAY_SIZE(bcma_bcm_device_names);
 112                break;
 113        case BCMA_MANUF_MIPS:
 114                names = bcma_mips_device_names;
 115                size = ARRAY_SIZE(bcma_mips_device_names);
 116                break;
 117        default:
 118                return "UNKNOWN";
 119        }
 120
 121        for (i = 0; i < size; i++) {
 122                if (names[i].id == id->id)
 123                        return names[i].name;
 124        }
 125
 126        return "UNKNOWN";
 127}
 128
 129static u32 bcma_scan_read32(struct bcma_bus *bus, u8 current_coreidx,
 130                       u16 offset)
 131{
 132        return readl(bus->mmio + offset);
 133}
 134
 135static void bcma_scan_switch_core(struct bcma_bus *bus, u32 addr)
 136{
 137        if (bus->hosttype == BCMA_HOSTTYPE_PCI)
 138                pci_write_config_dword(bus->host_pci, BCMA_PCI_BAR0_WIN,
 139                                       addr);
 140}
 141
 142static u32 bcma_erom_get_ent(struct bcma_bus *bus, u32 __iomem **eromptr)
 143{
 144        u32 ent = readl(*eromptr);
 145        (*eromptr)++;
 146        return ent;
 147}
 148
 149static void bcma_erom_push_ent(u32 __iomem **eromptr)
 150{
 151        (*eromptr)--;
 152}
 153
 154static s32 bcma_erom_get_ci(struct bcma_bus *bus, u32 __iomem **eromptr)
 155{
 156        u32 ent = bcma_erom_get_ent(bus, eromptr);
 157        if (!(ent & SCAN_ER_VALID))
 158                return -ENOENT;
 159        if ((ent & SCAN_ER_TAG) != SCAN_ER_TAG_CI)
 160                return -ENOENT;
 161        return ent;
 162}
 163
 164static bool bcma_erom_is_end(struct bcma_bus *bus, u32 __iomem **eromptr)
 165{
 166        u32 ent = bcma_erom_get_ent(bus, eromptr);
 167        bcma_erom_push_ent(eromptr);
 168        return (ent == (SCAN_ER_TAG_END | SCAN_ER_VALID));
 169}
 170
 171static bool bcma_erom_is_bridge(struct bcma_bus *bus, u32 __iomem **eromptr)
 172{
 173        u32 ent = bcma_erom_get_ent(bus, eromptr);
 174        bcma_erom_push_ent(eromptr);
 175        return (((ent & SCAN_ER_VALID)) &&
 176                ((ent & SCAN_ER_TAGX) == SCAN_ER_TAG_ADDR) &&
 177                ((ent & SCAN_ADDR_TYPE) == SCAN_ADDR_TYPE_BRIDGE));
 178}
 179
 180static void bcma_erom_skip_component(struct bcma_bus *bus, u32 __iomem **eromptr)
 181{
 182        u32 ent;
 183        while (1) {
 184                ent = bcma_erom_get_ent(bus, eromptr);
 185                if ((ent & SCAN_ER_VALID) &&
 186                    ((ent & SCAN_ER_TAG) == SCAN_ER_TAG_CI))
 187                        break;
 188                if (ent == (SCAN_ER_TAG_END | SCAN_ER_VALID))
 189                        break;
 190        }
 191        bcma_erom_push_ent(eromptr);
 192}
 193
 194static s32 bcma_erom_get_mst_port(struct bcma_bus *bus, u32 __iomem **eromptr)
 195{
 196        u32 ent = bcma_erom_get_ent(bus, eromptr);
 197        if (!(ent & SCAN_ER_VALID))
 198                return -ENOENT;
 199        if ((ent & SCAN_ER_TAG) != SCAN_ER_TAG_MP)
 200                return -ENOENT;
 201        return ent;
 202}
 203
 204static s32 bcma_erom_get_addr_desc(struct bcma_bus *bus, u32 __iomem **eromptr,
 205                                  u32 type, u8 port)
 206{
 207        u32 addrl, addrh, sizel, sizeh = 0;
 208        u32 size;
 209
 210        u32 ent = bcma_erom_get_ent(bus, eromptr);
 211        if ((!(ent & SCAN_ER_VALID)) ||
 212            ((ent & SCAN_ER_TAGX) != SCAN_ER_TAG_ADDR) ||
 213            ((ent & SCAN_ADDR_TYPE) != type) ||
 214            (((ent & SCAN_ADDR_PORT) >> SCAN_ADDR_PORT_SHIFT) != port)) {
 215                bcma_erom_push_ent(eromptr);
 216                return -EINVAL;
 217        }
 218
 219        addrl = ent & SCAN_ADDR_ADDR;
 220        if (ent & SCAN_ADDR_AG32)
 221                addrh = bcma_erom_get_ent(bus, eromptr);
 222        else
 223                addrh = 0;
 224
 225        if ((ent & SCAN_ADDR_SZ) == SCAN_ADDR_SZ_SZD) {
 226                size = bcma_erom_get_ent(bus, eromptr);
 227                sizel = size & SCAN_SIZE_SZ;
 228                if (size & SCAN_SIZE_SG32)
 229                        sizeh = bcma_erom_get_ent(bus, eromptr);
 230        } else
 231                sizel = SCAN_ADDR_SZ_BASE <<
 232                                ((ent & SCAN_ADDR_SZ) >> SCAN_ADDR_SZ_SHIFT);
 233
 234        return addrl;
 235}
 236
 237static struct bcma_device *bcma_find_core_by_index(struct bcma_bus *bus,
 238                                                   u16 index)
 239{
 240        struct bcma_device *core;
 241
 242        list_for_each_entry(core, &bus->cores, list) {
 243                if (core->core_index == index)
 244                        return core;
 245        }
 246        return NULL;
 247}
 248
 249static struct bcma_device *bcma_find_core_reverse(struct bcma_bus *bus, u16 coreid)
 250{
 251        struct bcma_device *core;
 252
 253        list_for_each_entry_reverse(core, &bus->cores, list) {
 254                if (core->id.id == coreid)
 255                        return core;
 256        }
 257        return NULL;
 258}
 259
 260static int bcma_get_next_core(struct bcma_bus *bus, u32 __iomem **eromptr,
 261                              struct bcma_device_id *match, int core_num,
 262                              struct bcma_device *core)
 263{
 264        s32 tmp;
 265        u8 i, j;
 266        s32 cia, cib;
 267        u8 ports[2], wrappers[2];
 268
 269        /* get CIs */
 270        cia = bcma_erom_get_ci(bus, eromptr);
 271        if (cia < 0) {
 272                bcma_erom_push_ent(eromptr);
 273                if (bcma_erom_is_end(bus, eromptr))
 274                        return -ESPIPE;
 275                return -EILSEQ;
 276        }
 277        cib = bcma_erom_get_ci(bus, eromptr);
 278        if (cib < 0)
 279                return -EILSEQ;
 280
 281        /* parse CIs */
 282        core->id.class = (cia & SCAN_CIA_CLASS) >> SCAN_CIA_CLASS_SHIFT;
 283        core->id.id = (cia & SCAN_CIA_ID) >> SCAN_CIA_ID_SHIFT;
 284        core->id.manuf = (cia & SCAN_CIA_MANUF) >> SCAN_CIA_MANUF_SHIFT;
 285        ports[0] = (cib & SCAN_CIB_NMP) >> SCAN_CIB_NMP_SHIFT;
 286        ports[1] = (cib & SCAN_CIB_NSP) >> SCAN_CIB_NSP_SHIFT;
 287        wrappers[0] = (cib & SCAN_CIB_NMW) >> SCAN_CIB_NMW_SHIFT;
 288        wrappers[1] = (cib & SCAN_CIB_NSW) >> SCAN_CIB_NSW_SHIFT;
 289        core->id.rev = (cib & SCAN_CIB_REV) >> SCAN_CIB_REV_SHIFT;
 290
 291        if (((core->id.manuf == BCMA_MANUF_ARM) &&
 292             (core->id.id == 0xFFF)) ||
 293            (ports[1] == 0)) {
 294                bcma_erom_skip_component(bus, eromptr);
 295                return -ENXIO;
 296        }
 297
 298        /* check if component is a core at all */
 299        if (wrappers[0] + wrappers[1] == 0) {
 300                /* Some specific cores don't need wrappers */
 301                switch (core->id.id) {
 302                case BCMA_CORE_4706_MAC_GBIT_COMMON:
 303                /* Not used yet: case BCMA_CORE_OOB_ROUTER: */
 304                        break;
 305                default:
 306                        bcma_erom_skip_component(bus, eromptr);
 307                        return -ENXIO;
 308                }
 309        }
 310
 311        if (bcma_erom_is_bridge(bus, eromptr)) {
 312                bcma_erom_skip_component(bus, eromptr);
 313                return -ENXIO;
 314        }
 315
 316        if (bcma_find_core_by_index(bus, core_num)) {
 317                bcma_erom_skip_component(bus, eromptr);
 318                return -ENODEV;
 319        }
 320
 321        if (match && ((match->manuf != BCMA_ANY_MANUF &&
 322              match->manuf != core->id.manuf) ||
 323             (match->id != BCMA_ANY_ID && match->id != core->id.id) ||
 324             (match->rev != BCMA_ANY_REV && match->rev != core->id.rev) ||
 325             (match->class != BCMA_ANY_CLASS && match->class != core->id.class)
 326            )) {
 327                bcma_erom_skip_component(bus, eromptr);
 328                return -ENODEV;
 329        }
 330
 331        /* get & parse master ports */
 332        for (i = 0; i < ports[0]; i++) {
 333                s32 mst_port_d = bcma_erom_get_mst_port(bus, eromptr);
 334                if (mst_port_d < 0)
 335                        return -EILSEQ;
 336        }
 337
 338        /* First Slave Address Descriptor should be port 0:
 339         * the main register space for the core
 340         */
 341        tmp = bcma_erom_get_addr_desc(bus, eromptr, SCAN_ADDR_TYPE_SLAVE, 0);
 342        if (tmp <= 0) {
 343                /* Try again to see if it is a bridge */
 344                tmp = bcma_erom_get_addr_desc(bus, eromptr,
 345                                              SCAN_ADDR_TYPE_BRIDGE, 0);
 346                if (tmp <= 0) {
 347                        return -EILSEQ;
 348                } else {
 349                        bcma_info(bus, "Bridge found\n");
 350                        return -ENXIO;
 351                }
 352        }
 353        core->addr = tmp;
 354
 355        /* get & parse slave ports */
 356        for (i = 0; i < ports[1]; i++) {
 357                for (j = 0; ; j++) {
 358                        tmp = bcma_erom_get_addr_desc(bus, eromptr,
 359                                SCAN_ADDR_TYPE_SLAVE, i);
 360                        if (tmp < 0) {
 361                                /* no more entries for port _i_ */
 362                                /* pr_debug("erom: slave port %d "
 363                                 * "has %d descriptors\n", i, j); */
 364                                break;
 365                        } else {
 366                                if (i == 0 && j == 0)
 367                                        core->addr1 = tmp;
 368                        }
 369                }
 370        }
 371
 372        /* get & parse master wrappers */
 373        for (i = 0; i < wrappers[0]; i++) {
 374                for (j = 0; ; j++) {
 375                        tmp = bcma_erom_get_addr_desc(bus, eromptr,
 376                                SCAN_ADDR_TYPE_MWRAP, i);
 377                        if (tmp < 0) {
 378                                /* no more entries for port _i_ */
 379                                /* pr_debug("erom: master wrapper %d "
 380                                 * "has %d descriptors\n", i, j); */
 381                                break;
 382                        } else {
 383                                if (i == 0 && j == 0)
 384                                        core->wrap = tmp;
 385                        }
 386                }
 387        }
 388
 389        /* get & parse slave wrappers */
 390        for (i = 0; i < wrappers[1]; i++) {
 391                u8 hack = (ports[1] == 1) ? 0 : 1;
 392                for (j = 0; ; j++) {
 393                        tmp = bcma_erom_get_addr_desc(bus, eromptr,
 394                                SCAN_ADDR_TYPE_SWRAP, i + hack);
 395                        if (tmp < 0) {
 396                                /* no more entries for port _i_ */
 397                                /* pr_debug("erom: master wrapper %d "
 398                                 * has %d descriptors\n", i, j); */
 399                                break;
 400                        } else {
 401                                if (wrappers[0] == 0 && !i && !j)
 402                                        core->wrap = tmp;
 403                        }
 404                }
 405        }
 406        if (bus->hosttype == BCMA_HOSTTYPE_SOC) {
 407                core->io_addr = ioremap_nocache(core->addr, BCMA_CORE_SIZE);
 408                if (!core->io_addr)
 409                        return -ENOMEM;
 410                core->io_wrap = ioremap_nocache(core->wrap, BCMA_CORE_SIZE);
 411                if (!core->io_wrap) {
 412                        iounmap(core->io_addr);
 413                        return -ENOMEM;
 414                }
 415        }
 416        return 0;
 417}
 418
 419void bcma_init_bus(struct bcma_bus *bus)
 420{
 421        s32 tmp;
 422        struct bcma_chipinfo *chipinfo = &(bus->chipinfo);
 423
 424        if (bus->init_done)
 425                return;
 426
 427        INIT_LIST_HEAD(&bus->cores);
 428        bus->nr_cores = 0;
 429
 430        bcma_scan_switch_core(bus, BCMA_ADDR_BASE);
 431
 432        tmp = bcma_scan_read32(bus, 0, BCMA_CC_ID);
 433        chipinfo->id = (tmp & BCMA_CC_ID_ID) >> BCMA_CC_ID_ID_SHIFT;
 434        chipinfo->rev = (tmp & BCMA_CC_ID_REV) >> BCMA_CC_ID_REV_SHIFT;
 435        chipinfo->pkg = (tmp & BCMA_CC_ID_PKG) >> BCMA_CC_ID_PKG_SHIFT;
 436        bcma_info(bus, "Found chip with id 0x%04X, rev 0x%02X and package 0x%02X\n",
 437                  chipinfo->id, chipinfo->rev, chipinfo->pkg);
 438
 439        bus->init_done = true;
 440}
 441
 442int bcma_bus_scan(struct bcma_bus *bus)
 443{
 444        u32 erombase;
 445        u32 __iomem *eromptr, *eromend;
 446
 447        int err, core_num = 0;
 448
 449        bcma_init_bus(bus);
 450
 451        erombase = bcma_scan_read32(bus, 0, BCMA_CC_EROM);
 452        if (bus->hosttype == BCMA_HOSTTYPE_SOC) {
 453                eromptr = ioremap_nocache(erombase, BCMA_CORE_SIZE);
 454                if (!eromptr)
 455                        return -ENOMEM;
 456        } else {
 457                eromptr = bus->mmio;
 458        }
 459
 460        eromend = eromptr + BCMA_CORE_SIZE / sizeof(u32);
 461
 462        bcma_scan_switch_core(bus, erombase);
 463
 464        while (eromptr < eromend) {
 465                struct bcma_device *other_core;
 466                struct bcma_device *core = kzalloc(sizeof(*core), GFP_KERNEL);
 467                if (!core) {
 468                        err = -ENOMEM;
 469                        goto out;
 470                }
 471                INIT_LIST_HEAD(&core->list);
 472                core->bus = bus;
 473
 474                err = bcma_get_next_core(bus, &eromptr, NULL, core_num, core);
 475                if (err < 0) {
 476                        kfree(core);
 477                        if (err == -ENODEV) {
 478                                core_num++;
 479                                continue;
 480                        } else if (err == -ENXIO) {
 481                                continue;
 482                        } else if (err == -ESPIPE) {
 483                                break;
 484                        }
 485                        goto out;
 486                }
 487
 488                core->core_index = core_num++;
 489                bus->nr_cores++;
 490                other_core = bcma_find_core_reverse(bus, core->id.id);
 491                core->core_unit = (other_core == NULL) ? 0 : other_core->core_unit + 1;
 492
 493                bcma_info(bus, "Core %d found: %s (manuf 0x%03X, id 0x%03X, rev 0x%02X, class 0x%X)\n",
 494                          core->core_index, bcma_device_name(&core->id),
 495                          core->id.manuf, core->id.id, core->id.rev,
 496                          core->id.class);
 497
 498                list_add_tail(&core->list, &bus->cores);
 499        }
 500
 501        err = 0;
 502out:
 503        if (bus->hosttype == BCMA_HOSTTYPE_SOC)
 504                iounmap(eromptr);
 505
 506        return err;
 507}
 508
 509int __init bcma_bus_scan_early(struct bcma_bus *bus,
 510                               struct bcma_device_id *match,
 511                               struct bcma_device *core)
 512{
 513        u32 erombase;
 514        u32 __iomem *eromptr, *eromend;
 515
 516        int err = -ENODEV;
 517        int core_num = 0;
 518
 519        erombase = bcma_scan_read32(bus, 0, BCMA_CC_EROM);
 520        if (bus->hosttype == BCMA_HOSTTYPE_SOC) {
 521                eromptr = ioremap_nocache(erombase, BCMA_CORE_SIZE);
 522                if (!eromptr)
 523                        return -ENOMEM;
 524        } else {
 525                eromptr = bus->mmio;
 526        }
 527
 528        eromend = eromptr + BCMA_CORE_SIZE / sizeof(u32);
 529
 530        bcma_scan_switch_core(bus, erombase);
 531
 532        while (eromptr < eromend) {
 533                memset(core, 0, sizeof(*core));
 534                INIT_LIST_HEAD(&core->list);
 535                core->bus = bus;
 536
 537                err = bcma_get_next_core(bus, &eromptr, match, core_num, core);
 538                if (err == -ENODEV) {
 539                        core_num++;
 540                        continue;
 541                } else if (err == -ENXIO)
 542                        continue;
 543                else if (err == -ESPIPE)
 544                        break;
 545                else if (err < 0)
 546                        goto out;
 547
 548                core->core_index = core_num++;
 549                bus->nr_cores++;
 550                bcma_info(bus, "Core %d found: %s (manuf 0x%03X, id 0x%03X, rev 0x%02X, class 0x%X)\n",
 551                          core->core_index, bcma_device_name(&core->id),
 552                          core->id.manuf, core->id.id, core->id.rev,
 553                          core->id.class);
 554
 555                list_add_tail(&core->list, &bus->cores);
 556                err = 0;
 557                break;
 558        }
 559
 560out:
 561        if (bus->hosttype == BCMA_HOSTTYPE_SOC)
 562                iounmap(eromptr);
 563
 564        return err;
 565}
 566
lxr.linux.no kindly hosted by Redpill Linpro AS, provider of Linux consulting and operations services since 1995.