drivers/net/wireless/brcm80211/brcmfmac/chip.c

   1 /*
   2  * Copyright (c) 2014 Broadcom Corporation
   3  *
   4  * Permission to use, copy, modify, and/or distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
  11  * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
  13  * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
  14  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15  */
  16 #include <linux/kernel.h>
  17 #include <linux/delay.h>
  18 #include <linux/list.h>
  19 #include <linux/ssb/ssb_regs.h>
  20 #include <linux/bcma/bcma.h>
  21 #include <linux/bcma/bcma_regs.h>
  22
  23 #include <defs.h>
  24 #include <soc.h>
  25 #include <brcm_hw_ids.h>
  26 #include <brcmu_utils.h>
  27 #include <chipcommon.h>
  28 #include "dhd_dbg.h"
  29 #include "chip.h"
  30
  31 /* SOC Interconnect types (aka chip types) */
  32 #define SOCI_SB         0
  33 #define SOCI_AI         1
  34
  35 /* PL-368 DMP definitions */
  36 #define DMP_DESC_TYPE_MSK       0x0000000F
  37 #define  DMP_DESC_EMPTY         0x00000000
  38 #define  DMP_DESC_VALID         0x00000001
  39 #define  DMP_DESC_COMPONENT     0x00000001
  40 #define  DMP_DESC_MASTER_PORT   0x00000003
  41 #define  DMP_DESC_ADDRESS       0x00000005
  42 #define  DMP_DESC_ADDRSIZE_GT32 0x00000008
  43 #define  DMP_DESC_EOT           0x0000000F
  44
  45 #define DMP_COMP_DESIGNER       0xFFF00000
  46 #define DMP_COMP_DESIGNER_S     20
  47 #define DMP_COMP_PARTNUM        0x000FFF00
  48 #define DMP_COMP_PARTNUM_S      8
  49 #define DMP_COMP_CLASS          0x000000F0
  50 #define DMP_COMP_CLASS_S        4
  51 #define DMP_COMP_REVISION       0xFF000000
  52 #define DMP_COMP_REVISION_S     24
  53 #define DMP_COMP_NUM_SWRAP      0x00F80000
  54 #define DMP_COMP_NUM_SWRAP_S    19
  55 #define DMP_COMP_NUM_MWRAP      0x0007C000
  56 #define DMP_COMP_NUM_MWRAP_S    14
  57 #define DMP_COMP_NUM_SPORT      0x00003E00
  58 #define DMP_COMP_NUM_SPORT_S    9
  59 #define DMP_COMP_NUM_MPORT      0x000001F0
  60 #define DMP_COMP_NUM_MPORT_S    4
  61
  62 #define DMP_MASTER_PORT_UID     0x0000FF00
  63 #define DMP_MASTER_PORT_UID_S   8
  64 #define DMP_MASTER_PORT_NUM     0x000000F0
  65 #define DMP_MASTER_PORT_NUM_S   4
  66
  67 #define DMP_SLAVE_ADDR_BASE     0xFFFFF000
  68 #define DMP_SLAVE_ADDR_BASE_S   12
  69 #define DMP_SLAVE_PORT_NUM      0x00000F00
  70 #define DMP_SLAVE_PORT_NUM_S    8
  71 #define DMP_SLAVE_TYPE          0x000000C0
  72 #define DMP_SLAVE_TYPE_S        6
  73 #define  DMP_SLAVE_TYPE_SLAVE   0
  74 #define  DMP_SLAVE_TYPE_BRIDGE  1
  75 #define  DMP_SLAVE_TYPE_SWRAP   2
  76 #define  DMP_SLAVE_TYPE_MWRAP   3
  77 #define DMP_SLAVE_SIZE_TYPE     0x00000030
  78 #define DMP_SLAVE_SIZE_TYPE_S   4
  79 #define  DMP_SLAVE_SIZE_4K      0
  80 #define  DMP_SLAVE_SIZE_8K      1
  81 #define  DMP_SLAVE_SIZE_16K     2
  82 #define  DMP_SLAVE_SIZE_DESC    3
  83
  84 /* EROM CompIdentB */
  85 #define CIB_REV_MASK            0xff000000
  86 #define CIB_REV_SHIFT           24
  87
  88 /* ARM CR4 core specific control flag bits */
  89 #define ARMCR4_BCMA_IOCTL_CPUHALT       0x0020
  90
  91 /* D11 core specific control flag bits */
  92 #define D11_BCMA_IOCTL_PHYCLOCKEN       0x0004
  93 #define D11_BCMA_IOCTL_PHYRESET         0x0008
  94
  95 /* chip core base & ramsize */
  96 /* bcm4329 */
  97 /* SDIO device core, ID 0x829 */
  98 #define BCM4329_CORE_BUS_BASE           0x18011000
  99 /* internal memory core, ID 0x80e */
 100 #define BCM4329_CORE_SOCRAM_BASE        0x18003000
 101 /* ARM Cortex M3 core, ID 0x82a */
 102 #define BCM4329_CORE_ARM_BASE           0x18002000
 103 #define BCM4329_RAMSIZE                 0x48000
 104
 105 /* bcm43143 */
 106 /* SDIO device core */
 107 #define BCM43143_CORE_BUS_BASE          0x18002000
 108 /* internal memory core */
 109 #define BCM43143_CORE_SOCRAM_BASE       0x18004000
 110 /* ARM Cortex M3 core, ID 0x82a */
 111 #define BCM43143_CORE_ARM_BASE          0x18003000
 112 #define BCM43143_RAMSIZE                0x70000
 113
 114 #define CORE_SB(base, field) \
 115                 (base + SBCONFIGOFF + offsetof(struct sbconfig, field))
 116 #define SBCOREREV(sbidh) \
 117         ((((sbidh) & SSB_IDHIGH_RCHI) >> SSB_IDHIGH_RCHI_SHIFT) | \
 118           ((sbidh) & SSB_IDHIGH_RCLO))
 119
 120 struct sbconfig {
 121         u32 PAD[2];
 122         u32 sbipsflag;  /* initiator port ocp slave flag */
 123         u32 PAD[3];
 124         u32 sbtpsflag;  /* target port ocp slave flag */
 125         u32 PAD[11];
 126         u32 sbtmerrloga;        /* (sonics >= 2.3) */
 127         u32 PAD;
 128         u32 sbtmerrlog; /* (sonics >= 2.3) */
 129         u32 PAD[3];
 130         u32 sbadmatch3; /* address match3 */
 131         u32 PAD;
 132         u32 sbadmatch2; /* address match2 */
 133         u32 PAD;
 134         u32 sbadmatch1; /* address match1 */
 135         u32 PAD[7];
 136         u32 sbimstate;  /* initiator agent state */
 137         u32 sbintvec;   /* interrupt mask */
 138         u32 sbtmstatelow;       /* target state */
 139         u32 sbtmstatehigh;      /* target state */
 140         u32 sbbwa0;             /* bandwidth allocation table0 */
 141         u32 PAD;
 142         u32 sbimconfiglow;      /* initiator configuration */
 143         u32 sbimconfighigh;     /* initiator configuration */
 144         u32 sbadmatch0; /* address match0 */
 145         u32 PAD;
 146         u32 sbtmconfiglow;      /* target configuration */
 147         u32 sbtmconfighigh;     /* target configuration */
 148         u32 sbbconfig;  /* broadcast configuration */
 149         u32 PAD;
 150         u32 sbbstate;   /* broadcast state */
 151         u32 PAD[3];
 152         u32 sbactcnfg;  /* activate configuration */
 153         u32 PAD[3];
 154         u32 sbflagst;   /* current sbflags */
 155         u32 PAD[3];
 156         u32 sbidlow;            /* identification */
 157         u32 sbidhigh;   /* identification */
 158 };
 159
 160 struct brcmf_core_priv {
 161         struct brcmf_core pub;
 162         u32 wrapbase;
 163         struct list_head list;
 164         struct brcmf_chip_priv *chip;
 165 };
 166
 167 /* ARM CR4 core specific control flag bits */
 168 #define ARMCR4_BCMA_IOCTL_CPUHALT       0x0020
 169
 170 /* D11 core specific control flag bits */
 171 #define D11_BCMA_IOCTL_PHYCLOCKEN       0x0004
 172 #define D11_BCMA_IOCTL_PHYRESET         0x0008
 173
 174 struct brcmf_chip_priv {
 175         struct brcmf_chip pub;
 176         const struct brcmf_buscore_ops *ops;
 177         void *ctx;
 178         /* assured first core is chipcommon, second core is buscore */
 179         struct list_head cores;
 180         u16 num_cores;
 181
 182         bool (*iscoreup)(struct brcmf_core_priv *core);
 183         void (*coredisable)(struct brcmf_core_priv *core, u32 prereset,
 184                             u32 reset);
 185         void (*resetcore)(struct brcmf_core_priv *core, u32 prereset, u32 reset,
 186                           u32 postreset);
 187 };
 188
 189 static void brcmf_chip_sb_corerev(struct brcmf_chip_priv *ci,
 190                                   struct brcmf_core *core)
 191 {
 192         u32 regdata;
 193
 194         regdata = ci->ops->read32(ci->ctx, CORE_SB(core->base, sbidhigh));
 195         core->rev = SBCOREREV(regdata);
 196 }
 197
 198 static bool brcmf_chip_sb_iscoreup(struct brcmf_core_priv *core)
 199 {
 200         struct brcmf_chip_priv *ci;
 201         u32 regdata;
 202         u32 address;
 203
 204         ci = core->chip;
 205         address = CORE_SB(core->pub.base, sbtmstatelow);
 206         regdata = ci->ops->read32(ci->ctx, address);
 207         regdata &= (SSB_TMSLOW_RESET | SSB_TMSLOW_REJECT |
 208                     SSB_IMSTATE_REJECT | SSB_TMSLOW_CLOCK);
 209         return SSB_TMSLOW_CLOCK == regdata;
 210 }
 211
 212 static bool brcmf_chip_ai_iscoreup(struct brcmf_core_priv *core)
 213 {
 214         struct brcmf_chip_priv *ci;
 215         u32 regdata;
 216         bool ret;
 217
 218         ci = core->chip;
 219         regdata = ci->ops->read32(ci->ctx, core->wrapbase + BCMA_IOCTL);
 220         ret = (regdata & (BCMA_IOCTL_FGC | BCMA_IOCTL_CLK)) == BCMA_IOCTL_CLK;
 221
 222         regdata = ci->ops->read32(ci->ctx, core->wrapbase + BCMA_RESET_CTL);
 223         ret = ret && ((regdata & BCMA_RESET_CTL_RESET) == 0);
 224
 225         return ret;
 226 }
 227
 228 static void brcmf_chip_sb_coredisable(struct brcmf_core_priv *core,
 229                                       u32 prereset, u32 reset)
 230 {
 231         struct brcmf_chip_priv *ci;
 232         u32 val, base;
 233
 234         ci = core->chip;
 235         base = core->pub.base;
 236         val = ci->ops->read32(ci->ctx, CORE_SB(base, sbtmstatelow));
 237         if (val & SSB_TMSLOW_RESET)
 238                 return;
 239
 240         val = ci->ops->read32(ci->ctx, CORE_SB(base, sbtmstatelow));
 241         if ((val & SSB_TMSLOW_CLOCK) != 0) {
 242                 /*
 243                  * set target reject and spin until busy is clear
 244                  * (preserve core-specific bits)
 245                  */
 246                 val = ci->ops->read32(ci->ctx, CORE_SB(base, sbtmstatelow));
 247                 ci->ops->write32(ci->ctx, CORE_SB(base, sbtmstatelow),
 248                                          val | SSB_TMSLOW_REJECT);
 249
 250                 val = ci->ops->read32(ci->ctx, CORE_SB(base, sbtmstatelow));
 251                 udelay(1);
 252                 SPINWAIT((ci->ops->read32(ci->ctx, CORE_SB(base, sbtmstatehigh))
 253                           & SSB_TMSHIGH_BUSY), 100000);
 254
 255                 val = ci->ops->read32(ci->ctx, CORE_SB(base, sbtmstatehigh));
 256                 if (val & SSB_TMSHIGH_BUSY)
 257                         brcmf_err("core state still busy\n");
 258
 259                 val = ci->ops->read32(ci->ctx, CORE_SB(base, sbidlow));
 260                 if (val & SSB_IDLOW_INITIATOR) {
 261                         val = ci->ops->read32(ci->ctx,
 262                                               CORE_SB(base, sbimstate));
 263                         val |= SSB_IMSTATE_REJECT;
 264                         ci->ops->write32(ci->ctx,
 265                                          CORE_SB(base, sbimstate), val);
 266                         val = ci->ops->read32(ci->ctx,
 267                                               CORE_SB(base, sbimstate));
 268                         udelay(1);
 269                         SPINWAIT((ci->ops->read32(ci->ctx,
 270                                                   CORE_SB(base, sbimstate)) &
 271                                   SSB_IMSTATE_BUSY), 100000);
 272                 }
 273
 274                 /* set reset and reject while enabling the clocks */
 275                 val = SSB_TMSLOW_FGC | SSB_TMSLOW_CLOCK |
 276                       SSB_TMSLOW_REJECT | SSB_TMSLOW_RESET;
 277                 ci->ops->write32(ci->ctx, CORE_SB(base, sbtmstatelow), val);
 278                 val = ci->ops->read32(ci->ctx, CORE_SB(base, sbtmstatelow));
 279                 udelay(10);
 280
 281                 /* clear the initiator reject bit */
 282                 val = ci->ops->read32(ci->ctx, CORE_SB(base, sbidlow));
 283                 if (val & SSB_IDLOW_INITIATOR) {
 284                         val = ci->ops->read32(ci->ctx,
 285                                               CORE_SB(base, sbimstate));
 286                         val &= ~SSB_IMSTATE_REJECT;
 287                         ci->ops->write32(ci->ctx,
 288                                          CORE_SB(base, sbimstate), val);
 289                 }
 290         }
 291
 292         /* leave reset and reject asserted */
 293         ci->ops->write32(ci->ctx, CORE_SB(base, sbtmstatelow),
 294                          (SSB_TMSLOW_REJECT | SSB_TMSLOW_RESET));
 295         udelay(1);
 296 }
 297
 298 static void brcmf_chip_ai_coredisable(struct brcmf_core_priv *core,
 299                                       u32 prereset, u32 reset)
 300 {
 301         struct brcmf_chip_priv *ci;
 302         u32 regdata;
 303
 304         ci = core->chip;
 305
 306         /* if core is already in reset, skip reset */
 307         regdata = ci->ops->read32(ci->ctx, core->wrapbase + BCMA_RESET_CTL);
 308         if ((regdata & BCMA_RESET_CTL_RESET) != 0)
 309                 goto in_reset_configure;
 310
 311         /* configure reset */
 312         ci->ops->write32(ci->ctx, core->wrapbase + BCMA_IOCTL,
 313                          prereset | BCMA_IOCTL_FGC | BCMA_IOCTL_CLK);
 314         ci->ops->read32(ci->ctx, core->wrapbase + BCMA_IOCTL);
 315
 316         /* put in reset */
 317         ci->ops->write32(ci->ctx, core->wrapbase + BCMA_RESET_CTL,
 318                          BCMA_RESET_CTL_RESET);
 319         usleep_range(10, 20);
 320
 321         /* wait till reset is 1 */
 322         SPINWAIT(ci->ops->read32(ci->ctx, core->wrapbase + BCMA_RESET_CTL) !=
 323                  BCMA_RESET_CTL_RESET, 300);
 324
 325 in_reset_configure:
 326         /* in-reset configure */
 327         ci->ops->write32(ci->ctx, core->wrapbase + BCMA_IOCTL,
 328                          reset | BCMA_IOCTL_FGC | BCMA_IOCTL_CLK);
 329         ci->ops->read32(ci->ctx, core->wrapbase + BCMA_IOCTL);
 330 }
 331
 332 static void brcmf_chip_sb_resetcore(struct brcmf_core_priv *core, u32 prereset,
 333                                     u32 reset, u32 postreset)
 334 {
 335         struct brcmf_chip_priv *ci;
 336         u32 regdata;
 337         u32 base;
 338
 339         ci = core->chip;
 340         base = core->pub.base;
 341         /*
 342          * Must do the disable sequence first to work for
 343          * arbitrary current core state.
 344          */
 345         brcmf_chip_sb_coredisable(core, 0, 0);
 346
 347         /*
 348          * Now do the initialization sequence.
 349          * set reset while enabling the clock and
 350          * forcing them on throughout the core
 351          */
 352         ci->ops->write32(ci->ctx, CORE_SB(base, sbtmstatelow),
 353                          SSB_TMSLOW_FGC | SSB_TMSLOW_CLOCK |
 354                          SSB_TMSLOW_RESET);
 355         regdata = ci->ops->read32(ci->ctx, CORE_SB(base, sbtmstatelow));
 356         udelay(1);
 357
 358         /* clear any serror */
 359         regdata = ci->ops->read32(ci->ctx, CORE_SB(base, sbtmstatehigh));
 360         if (regdata & SSB_TMSHIGH_SERR)
 361                 ci->ops->write32(ci->ctx, CORE_SB(base, sbtmstatehigh), 0);
 362
 363         regdata = ci->ops->read32(ci->ctx, CORE_SB(base, sbimstate));
 364         if (regdata & (SSB_IMSTATE_IBE | SSB_IMSTATE_TO)) {
 365                 regdata &= ~(SSB_IMSTATE_IBE | SSB_IMSTATE_TO);
 366                 ci->ops->write32(ci->ctx, CORE_SB(base, sbimstate), regdata);
 367         }
 368
 369         /* clear reset and allow it to propagate throughout the core */
 370         ci->ops->write32(ci->ctx, CORE_SB(base, sbtmstatelow),
 371                          SSB_TMSLOW_FGC | SSB_TMSLOW_CLOCK);
 372         regdata = ci->ops->read32(ci->ctx, CORE_SB(base, sbtmstatelow));
 373         udelay(1);
 374
 375         /* leave clock enabled */
 376         ci->ops->write32(ci->ctx, CORE_SB(base, sbtmstatelow),
 377                          SSB_TMSLOW_CLOCK);
 378         regdata = ci->ops->read32(ci->ctx, CORE_SB(base, sbtmstatelow));
 379         udelay(1);
 380 }
 381
 382 static void brcmf_chip_ai_resetcore(struct brcmf_core_priv *core, u32 prereset,
 383                                     u32 reset, u32 postreset)
 384 {
 385         struct brcmf_chip_priv *ci;
 386         int count;
 387
 388         ci = core->chip;
 389
 390         /* must disable first to work for arbitrary current core state */
 391         brcmf_chip_ai_coredisable(core, prereset, reset);
 392
 393         count = 0;
 394         while (ci->ops->read32(ci->ctx, core->wrapbase + BCMA_RESET_CTL) &
 395                BCMA_RESET_CTL_RESET) {
 396                 ci->ops->write32(ci->ctx, core->wrapbase + BCMA_RESET_CTL, 0);
 397                 count++;
 398                 if (count > 50)
 399                         break;
 400                 usleep_range(40, 60);
 401         }
 402
 403         ci->ops->write32(ci->ctx, core->wrapbase + BCMA_IOCTL,
 404                          postreset | BCMA_IOCTL_CLK);
 405         ci->ops->read32(ci->ctx, core->wrapbase + BCMA_IOCTL);
 406 }
 407
 408 static char *brcmf_chip_name(uint chipid, char *buf, uint len)
 409 {
 410         const char *fmt;
 411
 412         fmt = ((chipid > 0xa000) || (chipid < 0x4000)) ? "%d" : "%x";
 413         snprintf(buf, len, fmt, chipid);
 414         return buf;
 415 }
 416
 417 static struct brcmf_core *brcmf_chip_add_core(struct brcmf_chip_priv *ci,
 418                                               u16 coreid, u32 base,
 419                                               u32 wrapbase)
 420 {
 421         struct brcmf_core_priv *core;
 422
 423         core = kzalloc(sizeof(*core), GFP_KERNEL);
 424         if (!core)
 425                 return ERR_PTR(-ENOMEM);
 426
 427         core->pub.id = coreid;
 428         core->pub.base = base;
 429         core->chip = ci;
 430         core->wrapbase = wrapbase;
 431
 432         list_add_tail(&core->list, &ci->cores);
 433         return &core->pub;
 434 }
 435
 436 #ifdef DEBUG
 437 /* safety check for chipinfo */
 438 static int brcmf_chip_cores_check(struct brcmf_chip_priv *ci)
 439 {
 440         struct brcmf_core_priv *core;
 441         bool need_socram = false;
 442         bool has_socram = false;
 443         int idx = 1;
 444
 445         list_for_each_entry(core, &ci->cores, list) {
 446                 brcmf_dbg(INFO, " [%-2d] core 0x%x:%-2d base 0x%08x wrap 0x%08x\n",
 447                           idx++, core->pub.id, core->pub.rev, core->pub.base,
 448                           core->wrapbase);
 449
 450                 switch (core->pub.id) {
 451                 case BCMA_CORE_ARM_CM3:
 452                         need_socram = true;
 453                         break;
 454                 case BCMA_CORE_INTERNAL_MEM:
 455                         has_socram = true;
 456                         break;
 457                 case BCMA_CORE_ARM_CR4:
 458                         if (ci->pub.rambase == 0) {
 459                                 brcmf_err("RAM base not provided with ARM CR4 core\n");
 460                                 return -ENOMEM;
 461                         }
 462                         break;
 463                 default:
 464                         break;
 465                 }
 466         }
 467
 468         /* check RAM core presence for ARM CM3 core */
 469         if (need_socram && !has_socram) {
 470                 brcmf_err("RAM core not provided with ARM CM3 core\n");
 471                 return -ENODEV;
 472         }
 473         return 0;
 474 }
 475 #else   /* DEBUG */
 476 static inline int brcmf_chip_cores_check(struct brcmf_chip_priv *ci)
 477 {
 478         return 0;
 479 }
 480 #endif
 481
 482 static void brcmf_chip_get_raminfo(struct brcmf_chip_priv *ci)
 483 {
 484         switch (ci->pub.chip) {
 485         case BCM4329_CHIP_ID:
 486                 ci->pub.ramsize = BCM4329_RAMSIZE;
 487                 break;
 488         case BCM43143_CHIP_ID:
 489                 ci->pub.ramsize = BCM43143_RAMSIZE;
 490                 break;
 491         case BCM43241_CHIP_ID:
 492                 ci->pub.ramsize = 0x90000;
 493                 break;
 494         case BCM4330_CHIP_ID:
 495                 ci->pub.ramsize = 0x48000;
 496                 break;
 497         case BCM4334_CHIP_ID:
 498                 ci->pub.ramsize = 0x80000;
 499                 break;
 500         case BCM4335_CHIP_ID:
 501                 ci->pub.ramsize = 0xc0000;
 502                 ci->pub.rambase = 0x180000;
 503                 break;
 504         case BCM43362_CHIP_ID:
 505                 ci->pub.ramsize = 0x3c000;
 506                 break;
 507         case BCM4339_CHIP_ID:
 508         case BCM4354_CHIP_ID:
 509                 ci->pub.ramsize = 0xc0000;
 510                 ci->pub.rambase = 0x180000;
 511                 break;
 512         default:
 513                 brcmf_err("unknown chip: %s\n", ci->pub.name);
 514                 break;
 515         }
 516 }
 517
 518 static u32 brcmf_chip_dmp_get_desc(struct brcmf_chip_priv *ci, u32 *eromaddr,
 519                                    u8 *type)
 520 {
 521         u32 val;
 522
 523         /* read next descriptor */
 524         val = ci->ops->read32(ci->ctx, *eromaddr);
 525         *eromaddr += 4;
 526
 527         if (!type)
 528                 return val;
 529
 530         /* determine descriptor type */
 531         *type = (val & DMP_DESC_TYPE_MSK);
 532         if ((*type & ~DMP_DESC_ADDRSIZE_GT32) == DMP_DESC_ADDRESS)
 533                 *type = DMP_DESC_ADDRESS;
 534
 535         return val;
 536 }
 537
 538 static int brcmf_chip_dmp_get_regaddr(struct brcmf_chip_priv *ci, u32 *eromaddr,
 539                                       u32 *regbase, u32 *wrapbase)
 540 {
 541         u8 desc;
 542         u32 val;
 543         u8 mpnum = 0;
 544         u8 stype, sztype, wraptype;
 545
 546         *regbase = 0;
 547         *wrapbase = 0;
 548
 549         val = brcmf_chip_dmp_get_desc(ci, eromaddr, &desc);
 550         if (desc == DMP_DESC_MASTER_PORT) {
 551                 mpnum = (val & DMP_MASTER_PORT_NUM) >> DMP_MASTER_PORT_NUM_S;
 552                 wraptype = DMP_SLAVE_TYPE_MWRAP;
 553         } else if (desc == DMP_DESC_ADDRESS) {
 554                 /* revert erom address */
 555                 *eromaddr -= 4;
 556                 wraptype = DMP_SLAVE_TYPE_SWRAP;
 557         } else {
 558                 *eromaddr -= 4;
 559                 return -EILSEQ;
 560         }
 561
 562         do {
 563                 /* locate address descriptor */
 564                 do {
 565                         val = brcmf_chip_dmp_get_desc(ci, eromaddr, &desc);
 566                         /* unexpected table end */
 567                         if (desc == DMP_DESC_EOT) {
 568                                 *eromaddr -= 4;
 569                                 return -EFAULT;
 570                         }
 571                 } while (desc != DMP_DESC_ADDRESS);
 572
 573                 /* skip upper 32-bit address descriptor */
 574                 if (val & DMP_DESC_ADDRSIZE_GT32)
 575                         brcmf_chip_dmp_get_desc(ci, eromaddr, NULL);
 576
 577                 sztype = (val & DMP_SLAVE_SIZE_TYPE) >> DMP_SLAVE_SIZE_TYPE_S;
 578
 579                 /* next size descriptor can be skipped */
 580                 if (sztype == DMP_SLAVE_SIZE_DESC) {
 581                         val = brcmf_chip_dmp_get_desc(ci, eromaddr, NULL);
 582                         /* skip upper size descriptor if present */
 583                         if (val & DMP_DESC_ADDRSIZE_GT32)
 584                                 brcmf_chip_dmp_get_desc(ci, eromaddr, NULL);
 585                 }
 586
 587                 /* only look for 4K register regions */
 588                 if (sztype != DMP_SLAVE_SIZE_4K)
 589                         continue;
 590
 591                 stype = (val & DMP_SLAVE_TYPE) >> DMP_SLAVE_TYPE_S;
 592
 593                 /* only regular slave and wrapper */
 594                 if (*regbase == 0 && stype == DMP_SLAVE_TYPE_SLAVE)
 595                         *regbase = val & DMP_SLAVE_ADDR_BASE;
 596                 if (*wrapbase == 0 && stype == wraptype)
 597                         *wrapbase = val & DMP_SLAVE_ADDR_BASE;
 598         } while (*regbase == 0 || *wrapbase == 0);
 599
 600         return 0;
 601 }
 602
 603 static
 604 int brcmf_chip_dmp_erom_scan(struct brcmf_chip_priv *ci)
 605 {
 606         struct brcmf_core *core;
 607         u32 eromaddr;
 608         u8 desc_type = 0;
 609         u32 val;
 610         u16 id;
 611         u8 nmp, nsp, nmw, nsw, rev;
 612         u32 base, wrap;
 613         int err;
 614
 615         eromaddr = ci->ops->read32(ci->ctx, CORE_CC_REG(SI_ENUM_BASE, eromptr));
 616
 617         while (desc_type != DMP_DESC_EOT) {
 618                 val = brcmf_chip_dmp_get_desc(ci, &eromaddr, &desc_type);
 619                 if (!(val & DMP_DESC_VALID))
 620                         continue;
 621
 622                 if (desc_type == DMP_DESC_EMPTY)
 623                         continue;
 624
 625                 /* need a component descriptor */
 626                 if (desc_type != DMP_DESC_COMPONENT)
 627                         continue;
 628
 629                 id = (val & DMP_COMP_PARTNUM) >> DMP_COMP_PARTNUM_S;
 630
 631                 /* next descriptor must be component as well */
 632                 val = brcmf_chip_dmp_get_desc(ci, &eromaddr, &desc_type);
 633                 if (WARN_ON((val & DMP_DESC_TYPE_MSK) != DMP_DESC_COMPONENT))
 634                         return -EFAULT;
 635
 636                 /* only look at cores with master port(s) */
 637                 nmp = (val & DMP_COMP_NUM_MPORT) >> DMP_COMP_NUM_MPORT_S;
 638                 nsp = (val & DMP_COMP_NUM_SPORT) >> DMP_COMP_NUM_SPORT_S;
 639                 nmw = (val & DMP_COMP_NUM_MWRAP) >> DMP_COMP_NUM_MWRAP_S;
 640                 nsw = (val & DMP_COMP_NUM_SWRAP) >> DMP_COMP_NUM_SWRAP_S;
 641                 rev = (val & DMP_COMP_REVISION) >> DMP_COMP_REVISION_S;
 642
 643                 /* need core with ports */
 644                 if (nmw + nsw == 0)
 645                         continue;
 646
 647                 /* try to obtain register address info */
 648                 err = brcmf_chip_dmp_get_regaddr(ci, &eromaddr, &base, &wrap);
 649                 if (err)
 650                         continue;
 651
 652                 /* finally a core to be added */
 653                 core = brcmf_chip_add_core(ci, id, base, wrap);
 654                 if (IS_ERR(core))
 655                         return PTR_ERR(core);
 656
 657                 core->rev = rev;
 658         }
 659
 660         return 0;
 661 }
 662
 663 static int brcmf_chip_recognition(struct brcmf_chip_priv *ci)
 664 {
 665         struct brcmf_core *core;
 666         u32 regdata;
 667         u32 socitype;
 668
 669         /* Get CC core rev
 670          * Chipid is assume to be at offset 0 from SI_ENUM_BASE
 671          * For different chiptypes or old sdio hosts w/o chipcommon,
 672          * other ways of recognition should be added here.
 673          */
 674         regdata = ci->ops->read32(ci->ctx, CORE_CC_REG(SI_ENUM_BASE, chipid));
 675         ci->pub.chip = regdata & CID_ID_MASK;
 676         ci->pub.chiprev = (regdata & CID_REV_MASK) >> CID_REV_SHIFT;
 677         socitype = (regdata & CID_TYPE_MASK) >> CID_TYPE_SHIFT;
 678
 679         brcmf_chip_name(ci->pub.chip, ci->pub.name, sizeof(ci->pub.name));
 680         brcmf_dbg(INFO, "found %s chip: BCM%s, rev=%d\n",
 681                   socitype == SOCI_SB ? "SB" : "AXI", ci->pub.name,
 682                   ci->pub.chiprev);
 683
 684         if (socitype == SOCI_SB) {
 685                 if (ci->pub.chip != BCM4329_CHIP_ID) {
 686                         brcmf_err("SB chip is not supported\n");
 687                         return -ENODEV;
 688                 }
 689                 ci->iscoreup = brcmf_chip_sb_iscoreup;
 690                 ci->coredisable = brcmf_chip_sb_coredisable;
 691                 ci->resetcore = brcmf_chip_sb_resetcore;
 692
 693                 core = brcmf_chip_add_core(ci, BCMA_CORE_CHIPCOMMON,
 694                                            SI_ENUM_BASE, 0);
 695                 brcmf_chip_sb_corerev(ci, core);
 696                 core = brcmf_chip_add_core(ci, BCMA_CORE_SDIO_DEV,
 697                                            BCM4329_CORE_BUS_BASE, 0);
 698                 brcmf_chip_sb_corerev(ci, core);
 699                 core = brcmf_chip_add_core(ci, BCMA_CORE_INTERNAL_MEM,
 700                                            BCM4329_CORE_SOCRAM_BASE, 0);
 701                 brcmf_chip_sb_corerev(ci, core);
 702                 core = brcmf_chip_add_core(ci, BCMA_CORE_ARM_CM3,
 703                                            BCM4329_CORE_ARM_BASE, 0);
 704                 brcmf_chip_sb_corerev(ci, core);
 705
 706                 core = brcmf_chip_add_core(ci, BCMA_CORE_80211, 0x18001000, 0);
 707                 brcmf_chip_sb_corerev(ci, core);
 708         } else if (socitype == SOCI_AI) {
 709                 ci->iscoreup = brcmf_chip_ai_iscoreup;
 710                 ci->coredisable = brcmf_chip_ai_coredisable;
 711                 ci->resetcore = brcmf_chip_ai_resetcore;
 712
 713                 brcmf_chip_dmp_erom_scan(ci);
 714         } else {
 715                 brcmf_err("chip backplane type %u is not supported\n",
 716                           socitype);
 717                 return -ENODEV;
 718         }
 719
 720         brcmf_chip_get_raminfo(ci);
 721
 722         return brcmf_chip_cores_check(ci);
 723 }
 724
 725 static void brcmf_chip_disable_arm(struct brcmf_chip_priv *chip, u16 id)
 726 {
 727         struct brcmf_core *core;
 728         struct brcmf_core_priv *cr4;
 729         u32 val;
 730
 731
 732         core = brcmf_chip_get_core(&chip->pub, id);
 733         if (!core)
 734                 return;
 735
 736         switch (id) {
 737         case BCMA_CORE_ARM_CM3:
 738                 brcmf_chip_coredisable(core, 0, 0);
 739                 break;
 740         case BCMA_CORE_ARM_CR4:
 741                 cr4 = container_of(core, struct brcmf_core_priv, pub);
 742
 743                 /* clear all IOCTL bits except HALT bit */
 744                 val = chip->ops->read32(chip->ctx, cr4->wrapbase + BCMA_IOCTL);
 745                 val &= ARMCR4_BCMA_IOCTL_CPUHALT;
 746                 brcmf_chip_resetcore(core, val, ARMCR4_BCMA_IOCTL_CPUHALT,
 747                                      ARMCR4_BCMA_IOCTL_CPUHALT);
 748                 break;
 749         default:
 750                 brcmf_err("unknown id: %u\n", id);
 751                 break;
 752         }
 753 }
 754
 755 static int brcmf_chip_setup(struct brcmf_chip_priv *chip)
 756 {
 757         struct brcmf_chip *pub;
 758         struct brcmf_core_priv *cc;
 759         u32 base;
 760         u32 val;
 761         int ret = 0;
 762
 763         pub = &chip->pub;
 764         cc = list_first_entry(&chip->cores, struct brcmf_core_priv, list);
 765         base = cc->pub.base;
 766
 767         /* get chipcommon capabilites */
 768         pub->cc_caps = chip->ops->read32(chip->ctx,
 769                                          CORE_CC_REG(base, capabilities));
 770
 771         /* get pmu caps & rev */
 772         if (pub->cc_caps & CC_CAP_PMU) {
 773                 val = chip->ops->read32(chip->ctx,
 774                                         CORE_CC_REG(base, pmucapabilities));
 775                 pub->pmurev = val & PCAP_REV_MASK;
 776                 pub->pmucaps = val;
 777         }
 778
 779         brcmf_dbg(INFO, "ccrev=%d, pmurev=%d, pmucaps=0x%x\n",
 780                   cc->pub.rev, pub->pmurev, pub->pmucaps);
 781
 782         /* execute bus core specific setup */
 783         if (chip->ops->setup)
 784                 ret = chip->ops->setup(chip->ctx, pub);
 785
 786         /*
 787          * Make sure any on-chip ARM is off (in case strapping is wrong),
 788          * or downloaded code was already running.
 789          */
 790         brcmf_chip_disable_arm(chip, BCMA_CORE_ARM_CM3);
 791         brcmf_chip_disable_arm(chip, BCMA_CORE_ARM_CR4);
 792         return ret;
 793 }
 794
 795 struct brcmf_chip *brcmf_chip_attach(void *ctx,
 796                                      const struct brcmf_buscore_ops *ops)
 797 {
 798         struct brcmf_chip_priv *chip;
 799         int err = 0;
 800
 801         if (WARN_ON(!ops->read32))
 802                 err = -EINVAL;
 803         if (WARN_ON(!ops->write32))
 804                 err = -EINVAL;
 805         if (WARN_ON(!ops->prepare))
 806                 err = -EINVAL;
 807         if (WARN_ON(!ops->exit_dl))
 808                 err = -EINVAL;
 809         if (err < 0)
 810                 return ERR_PTR(-EINVAL);
 811
 812         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
 813         if (!chip)
 814                 return ERR_PTR(-ENOMEM);
 815
 816         INIT_LIST_HEAD(&chip->cores);
 817         chip->num_cores = 0;
 818         chip->ops = ops;
 819         chip->ctx = ctx;
 820
 821         err = ops->prepare(ctx);
 822         if (err < 0)
 823                 goto fail;
 824
 825         err = brcmf_chip_recognition(chip);
 826         if (err < 0)
 827                 goto fail;
 828
 829         err = brcmf_chip_setup(chip);
 830         if (err < 0)
 831                 goto fail;
 832
 833         return &chip->pub;
 834
 835 fail:
 836         brcmf_chip_detach(&chip->pub);
 837         return ERR_PTR(err);
 838 }
 839
 840 void brcmf_chip_detach(struct brcmf_chip *pub)
 841 {
 842         struct brcmf_chip_priv *chip;
 843         struct brcmf_core_priv *core;
 844         struct brcmf_core_priv *tmp;
 845
 846         chip = container_of(pub, struct brcmf_chip_priv, pub);
 847         list_for_each_entry_safe(core, tmp, &chip->cores, list) {
 848                 list_del(&core->list);
 849                 kfree(core);
 850         }
 851         kfree(chip);
 852 }
 853
 854 struct brcmf_core *brcmf_chip_get_core(struct brcmf_chip *pub, u16 coreid)
 855 {
 856         struct brcmf_chip_priv *chip;
 857         struct brcmf_core_priv *core;
 858
 859         chip = container_of(pub, struct brcmf_chip_priv, pub);
 860         list_for_each_entry(core, &chip->cores, list)
 861                 if (core->pub.id == coreid)
 862                         return &core->pub;
 863
 864         return NULL;
 865 }
 866
 867 struct brcmf_core *brcmf_chip_get_chipcommon(struct brcmf_chip *pub)
 868 {
 869         struct brcmf_chip_priv *chip;
 870         struct brcmf_core_priv *cc;
 871
 872         chip = container_of(pub, struct brcmf_chip_priv, pub);
 873         cc = list_first_entry(&chip->cores, struct brcmf_core_priv, list);
 874         if (WARN_ON(!cc || cc->pub.id != BCMA_CORE_CHIPCOMMON))
 875                 return brcmf_chip_get_core(pub, BCMA_CORE_CHIPCOMMON);
 876         return &cc->pub;
 877 }
 878
 879 bool brcmf_chip_iscoreup(struct brcmf_core *pub)
 880 {
 881         struct brcmf_core_priv *core;
 882
 883         core = container_of(pub, struct brcmf_core_priv, pub);
 884         return core->chip->iscoreup(core);
 885 }
 886
 887 void brcmf_chip_coredisable(struct brcmf_core *pub, u32 prereset, u32 reset)
 888 {
 889         struct brcmf_core_priv *core;
 890
 891         core = container_of(pub, struct brcmf_core_priv, pub);
 892         core->chip->coredisable(core, prereset, reset);
 893 }
 894
 895 void brcmf_chip_resetcore(struct brcmf_core *pub, u32 prereset, u32 reset,
 896                           u32 postreset)
 897 {
 898         struct brcmf_core_priv *core;
 899
 900         core = container_of(pub, struct brcmf_core_priv, pub);
 901         core->chip->resetcore(core, prereset, reset, postreset);
 902 }
 903
 904 static void
 905 brcmf_chip_cm3_enterdl(struct brcmf_chip_priv *chip)
 906 {
 907         struct brcmf_core *core;
 908
 909         brcmf_chip_disable_arm(chip, BCMA_CORE_ARM_CM3);
 910         core = brcmf_chip_get_core(&chip->pub, BCMA_CORE_80211);
 911         brcmf_chip_resetcore(core, D11_BCMA_IOCTL_PHYRESET |
 912                                    D11_BCMA_IOCTL_PHYCLOCKEN,
 913                              D11_BCMA_IOCTL_PHYCLOCKEN,
 914                              D11_BCMA_IOCTL_PHYCLOCKEN);
 915         core = brcmf_chip_get_core(&chip->pub, BCMA_CORE_INTERNAL_MEM);
 916         brcmf_chip_resetcore(core, 0, 0, 0);
 917 }
 918
 919 static bool brcmf_chip_cm3_exitdl(struct brcmf_chip_priv *chip)
 920 {
 921         struct brcmf_core *core;
 922
 923         core = brcmf_chip_get_core(&chip->pub, BCMA_CORE_INTERNAL_MEM);
 924         if (!brcmf_chip_iscoreup(core)) {
 925                 brcmf_err("SOCRAM core is down after reset?\n");
 926                 return false;
 927         }
 928
 929         chip->ops->exit_dl(chip->ctx, &chip->pub, 0);
 930
 931         core = brcmf_chip_get_core(&chip->pub, BCMA_CORE_ARM_CM3);
 932         brcmf_chip_resetcore(core, 0, 0, 0);
 933
 934         return true;
 935 }
 936
 937 static inline void
 938 brcmf_chip_cr4_enterdl(struct brcmf_chip_priv *chip)
 939 {
 940         struct brcmf_core *core;
 941
 942         brcmf_chip_disable_arm(chip, BCMA_CORE_ARM_CR4);
 943
 944         core = brcmf_chip_get_core(&chip->pub, BCMA_CORE_80211);
 945         brcmf_chip_resetcore(core, D11_BCMA_IOCTL_PHYRESET |
 946                                    D11_BCMA_IOCTL_PHYCLOCKEN,
 947                              D11_BCMA_IOCTL_PHYCLOCKEN,
 948                              D11_BCMA_IOCTL_PHYCLOCKEN);
 949 }
 950
 951 static bool brcmf_chip_cr4_exitdl(struct brcmf_chip_priv *chip, u32 rstvec)
 952 {
 953         struct brcmf_core *core;
 954
 955         chip->ops->exit_dl(chip->ctx, &chip->pub, rstvec);
 956
 957         /* restore ARM */
 958         core = brcmf_chip_get_core(&chip->pub, BCMA_CORE_ARM_CR4);
 959         brcmf_chip_resetcore(core, ARMCR4_BCMA_IOCTL_CPUHALT, 0, 0);
 960
 961         return true;
 962 }
 963
 964 void brcmf_chip_enter_download(struct brcmf_chip *pub)
 965 {
 966         struct brcmf_chip_priv *chip;
 967         struct brcmf_core *arm;
 968
 969         brcmf_dbg(TRACE, "Enter\n");
 970
 971         chip = container_of(pub, struct brcmf_chip_priv, pub);
 972         arm = brcmf_chip_get_core(pub, BCMA_CORE_ARM_CR4);
 973         if (arm) {
 974                 brcmf_chip_cr4_enterdl(chip);
 975                 return;
 976         }
 977
 978         brcmf_chip_cm3_enterdl(chip);
 979 }
 980
 981 bool brcmf_chip_exit_download(struct brcmf_chip *pub, u32 rstvec)
 982 {
 983         struct brcmf_chip_priv *chip;
 984         struct brcmf_core *arm;
 985
 986         brcmf_dbg(TRACE, "Enter\n");
 987
 988         chip = container_of(pub, struct brcmf_chip_priv, pub);
 989         arm = brcmf_chip_get_core(pub, BCMA_CORE_ARM_CR4);
 990         if (arm)
 991                 return brcmf_chip_cr4_exitdl(chip, rstvec);
 992
 993         return brcmf_chip_cm3_exitdl(chip);
 994 }
 995
 996 bool brcmf_chip_sr_capable(struct brcmf_chip *pub)
 997 {
 998         u32 base, addr, reg, pmu_cc3_mask = ~0;
 999         struct brcmf_chip_priv *chip;
1000
1001         brcmf_dbg(TRACE, "Enter\n");
1002
1003         /* old chips with PMU version less than 17 don't support save restore */
1004         if (pub->pmurev < 17)
1005                 return false;
1006
1007         base = brcmf_chip_get_chipcommon(pub)->base;
1008         chip = container_of(pub, struct brcmf_chip_priv, pub);
1009
1010         switch (pub->chip) {
1011         case BCM4354_CHIP_ID:
1012                 /* explicitly check SR engine enable bit */
1013                 pmu_cc3_mask = BIT(2);
1014                 /* fall-through */
1015         case BCM43241_CHIP_ID:
1016         case BCM4335_CHIP_ID:
1017         case BCM4339_CHIP_ID:
1018                 /* read PMU chipcontrol register 3 */
1019                 addr = CORE_CC_REG(base, chipcontrol_addr);
1020                 chip->ops->write32(chip->ctx, addr, 3);
1021                 addr = CORE_CC_REG(base, chipcontrol_data);
1022                 reg = chip->ops->read32(chip->ctx, addr);
1023                 return (reg & pmu_cc3_mask) != 0;
1024         default:
1025                 addr = CORE_CC_REG(base, pmucapabilities_ext);
1026                 reg = chip->ops->read32(chip->ctx, addr);
1027                 if ((reg & PCAPEXT_SR_SUPPORTED_MASK) == 0)
1028                         return false;
1029
1030                 addr = CORE_CC_REG(base, retention_ctl);
1031                 reg = chip->ops->read32(chip->ctx, addr);
1032                 return (reg & (PMU_RCTL_MACPHY_DISABLE_MASK |
1033                                PMU_RCTL_LOGIC_DISABLE_MASK)) == 0;
1034         }
1035 }