drivers/staging/brcm80211/include/bcmutils.h

   1 /*
   2  * Copyright (c) 2010 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
  17 #ifndef _bcmutils_h_
  18 #define _bcmutils_h_
  19
  20 #ifdef __cplusplus
  21 extern "C" {
  22 #endif
  23
  24 /* ctype replacement */
  25 #define _BCM_U  0x01            /* upper */
  26 #define _BCM_L  0x02            /* lower */
  27 #define _BCM_D  0x04            /* digit */
  28 #define _BCM_C  0x08            /* cntrl */
  29 #define _BCM_P  0x10            /* punct */
  30 #define _BCM_S  0x20            /* white space (space/lf/tab) */
  31 #define _BCM_X  0x40            /* hex digit */
  32 #define _BCM_SP 0x80            /* hard space (0x20) */
  33
  34         extern const unsigned char bcm_ctype[];
  35 #define bcm_ismask(x)   (bcm_ctype[(int)(unsigned char)(x)])
  36
  37 #define bcm_isalnum(c)  ((bcm_ismask(c)&(_BCM_U|_BCM_L|_BCM_D)) != 0)
  38 #define bcm_isalpha(c)  ((bcm_ismask(c)&(_BCM_U|_BCM_L)) != 0)
  39 #define bcm_iscntrl(c)  ((bcm_ismask(c)&(_BCM_C)) != 0)
  40 #define bcm_isdigit(c)  ((bcm_ismask(c)&(_BCM_D)) != 0)
  41 #define bcm_isgraph(c)  ((bcm_ismask(c)&(_BCM_P|_BCM_U|_BCM_L|_BCM_D)) != 0)
  42 #define bcm_islower(c)  ((bcm_ismask(c)&(_BCM_L)) != 0)
  43 #define bcm_isprint(c)  ((bcm_ismask(c)&(_BCM_P|_BCM_U|_BCM_L|_BCM_D|_BCM_SP)) != 0)
  44 #define bcm_ispunct(c)  ((bcm_ismask(c)&(_BCM_P)) != 0)
  45 #define bcm_isspace(c)  ((bcm_ismask(c)&(_BCM_S)) != 0)
  46 #define bcm_isupper(c)  ((bcm_ismask(c)&(_BCM_U)) != 0)
  47 #define bcm_isxdigit(c) ((bcm_ismask(c)&(_BCM_D|_BCM_X)) != 0)
  48 #define bcm_tolower(c)  (bcm_isupper((c)) ? ((c) + 'a' - 'A') : (c))
  49 #define bcm_toupper(c)  (bcm_islower((c)) ? ((c) + 'A' - 'a') : (c))
  50
  51 /* Buffer structure for collecting string-formatted data
  52 * using bcm_bprintf() API.
  53 * Use bcm_binit() to initialize before use
  54 */
  55
  56         struct bcmstrbuf {
  57                 char *buf;      /* pointer to current position in origbuf */
  58                 unsigned int size;      /* current (residual) size in bytes */
  59                 char *origbuf;  /* unmodified pointer to orignal buffer */
  60                 unsigned int origsize;  /* unmodified orignal buffer size in bytes */
  61         };
  62
  63 /* ** driver-only section ** */
  64 #include <osl.h>
  65
  66 #define GPIO_PIN_NOTDEFINED     0x20    /* Pin not defined */
  67
  68 /*
  69  * Spin at most 'us' microseconds while 'exp' is true.
  70  * Caller should explicitly test 'exp' when this completes
  71  * and take appropriate error action if 'exp' is still true.
  72  */
  73 #define SPINWAIT(exp, us) { \
  74         uint countdown = (us) + 9; \
  75         while ((exp) && (countdown >= 10)) {\
  76                 OSL_DELAY(10); \
  77                 countdown -= 10; \
  78         } \
  79 }
  80
  81 /* osl multi-precedence packet queue */
  82 #ifndef PKTQ_LEN_DEFAULT
  83 #define PKTQ_LEN_DEFAULT        128     /* Max 128 packets */
  84 #endif
  85 #ifndef PKTQ_MAX_PREC
  86 #define PKTQ_MAX_PREC           16      /* Maximum precedence levels */
  87 #endif
  88
  89         typedef struct pktq_prec {
  90                 void *head;     /* first packet to dequeue */
  91                 void *tail;     /* last packet to dequeue */
  92                 uint16 len;     /* number of queued packets */
  93                 uint16 max;     /* maximum number of queued packets */
  94         } pktq_prec_t;
  95
  96 /* multi-priority pkt queue */
  97         struct pktq {
  98                 uint16 num_prec;        /* number of precedences in use */
  99                 uint16 hi_prec; /* rapid dequeue hint (>= highest non-empty prec) */
 100                 uint16 max;     /* total max packets */
 101                 uint16 len;     /* total number of packets */
 102                 /* q array must be last since # of elements can be either PKTQ_MAX_PREC or 1 */
 103                 struct pktq_prec q[PKTQ_MAX_PREC];
 104         };
 105
 106 /* simple, non-priority pkt queue */
 107         struct spktq {
 108                 uint16 num_prec;        /* number of precedences in use (always 1) */
 109                 uint16 hi_prec; /* rapid dequeue hint (>= highest non-empty prec) */
 110                 uint16 max;     /* total max packets */
 111                 uint16 len;     /* total number of packets */
 112                 /* q array must be last since # of elements can be either PKTQ_MAX_PREC or 1 */
 113                 struct pktq_prec q[1];
 114         };
 115
 116 #define PKTQ_PREC_ITER(pq, prec)        for (prec = (pq)->num_prec - 1; prec >= 0; prec--)
 117
 118 /* fn(pkt, arg).  return true if pkt belongs to if */
 119         typedef bool(*ifpkt_cb_t) (void *, int);
 120
 121 /* forward definition of ether_addr structure used by some function prototypes */
 122
 123         struct ether_addr;
 124
 125         extern int ether_isbcast(const void *ea);
 126         extern int ether_isnulladdr(const void *ea);
 127
 128 /* operations on a specific precedence in packet queue */
 129
 130 #define pktq_psetmax(pq, prec, _max)    ((pq)->q[prec].max = (_max))
 131 #define pktq_plen(pq, prec)             ((pq)->q[prec].len)
 132 #define pktq_pavail(pq, prec)           ((pq)->q[prec].max - (pq)->q[prec].len)
 133 #define pktq_pfull(pq, prec)            ((pq)->q[prec].len >= (pq)->q[prec].max)
 134 #define pktq_pempty(pq, prec)           ((pq)->q[prec].len == 0)
 135
 136 #define pktq_ppeek(pq, prec)            ((pq)->q[prec].head)
 137 #define pktq_ppeek_tail(pq, prec)       ((pq)->q[prec].tail)
 138
 139         extern void *pktq_penq(struct pktq *pq, int prec, void *p);
 140         extern void *pktq_penq_head(struct pktq *pq, int prec, void *p);
 141         extern void *pktq_pdeq(struct pktq *pq, int prec);
 142         extern void *pktq_pdeq_tail(struct pktq *pq, int prec);
 143 /* Empty the queue at particular precedence level */
 144         extern void pktq_pflush(osl_t * osh, struct pktq *pq, int prec,
 145                                 bool dir, ifpkt_cb_t fn, int arg);
 146 /* Remove a specified packet from its queue */
 147         extern bool pktq_pdel(struct pktq *pq, void *p, int prec);
 148
 149 /* operations on a set of precedences in packet queue */
 150
 151         extern int pktq_mlen(struct pktq *pq, uint prec_bmp);
 152         extern void *pktq_mdeq(struct pktq *pq, uint prec_bmp, int *prec_out);
 153
 154 /* operations on packet queue as a whole */
 155
 156 #define pktq_len(pq)                    ((int)(pq)->len)
 157 #define pktq_max(pq)                    ((int)(pq)->max)
 158 #define pktq_avail(pq)                  ((int)((pq)->max - (pq)->len))
 159 #define pktq_full(pq)                   ((pq)->len >= (pq)->max)
 160 #define pktq_empty(pq)                  ((pq)->len == 0)
 161
 162 /* operations for single precedence queues */
 163 #define pktenq(pq, p)           pktq_penq(((struct pktq *)pq), 0, (p))
 164 #define pktenq_head(pq, p)      pktq_penq_head(((struct pktq *)pq), 0, (p))
 165 #define pktdeq(pq)              pktq_pdeq(((struct pktq *)pq), 0)
 166 #define pktdeq_tail(pq)         pktq_pdeq_tail(((struct pktq *)pq), 0)
 167 #define pktqinit(pq, len) pktq_init(((struct pktq *)pq), 1, len)
 168
 169         extern void pktq_init(struct pktq *pq, int num_prec, int max_len);
 170 /* prec_out may be NULL if caller is not interested in return value */
 171         extern void *pktq_deq(struct pktq *pq, int *prec_out);
 172         extern void *pktq_deq_tail(struct pktq *pq, int *prec_out);
 173         extern void *pktq_peek(struct pktq *pq, int *prec_out);
 174         extern void *pktq_peek_tail(struct pktq *pq, int *prec_out);
 175         extern void pktq_flush(osl_t * osh, struct pktq *pq, bool dir,
 176                                ifpkt_cb_t fn, int arg);
 177
 178 /* externs */
 179 /* packet */
 180         extern uint pktcopy(osl_t * osh, void *p, uint offset, int len,
 181                             uchar * buf);
 182         extern uint pktfrombuf(osl_t * osh, void *p, uint offset, int len,
 183                                uchar * buf);
 184         extern uint pkttotlen(osl_t * osh, void *p);
 185         extern void *pktlast(osl_t * osh, void *p);
 186         extern uint pktsegcnt(osl_t * osh, void *p);
 187
 188 /* Get priority from a packet and pass it back in scb (or equiv) */
 189         extern uint pktsetprio(void *pkt, bool update_vtag);
 190 #define PKTPRIO_VDSCP   0x100   /* DSCP prio found after VLAN tag */
 191 #define PKTPRIO_VLAN    0x200   /* VLAN prio found */
 192 #define PKTPRIO_UPD     0x400   /* DSCP used to update VLAN prio */
 193 #define PKTPRIO_DSCP    0x800   /* DSCP prio found */
 194
 195 /* string */
 196         extern int BCMROMFN(bcm_atoi) (char *s);
 197         extern ulong BCMROMFN(bcm_strtoul) (char *cp, char **endp, uint base);
 198         extern char *BCMROMFN(bcmstrstr) (char *haystack, char *needle);
 199         extern char *BCMROMFN(bcmstrcat) (char *dest, const char *src);
 200         extern char *BCMROMFN(bcmstrncat) (char *dest, const char *src,
 201                                            uint size);
 202         extern ulong wchar2ascii(char *abuf, ushort * wbuf, ushort wbuflen,
 203                                  ulong abuflen);
 204         char *bcmstrtok(char **string, const char *delimiters, char *tokdelim);
 205         int bcmstricmp(const char *s1, const char *s2);
 206         int bcmstrnicmp(const char *s1, const char *s2, int cnt);
 207
 208 /* ethernet address */
 209         extern char *bcm_ether_ntoa(const struct ether_addr *ea, char *buf);
 210         extern int BCMROMFN(bcm_ether_atoe) (char *p, struct ether_addr * ea);
 211
 212 /* ip address */
 213         struct ipv4_addr;
 214         extern char *bcm_ip_ntoa(struct ipv4_addr *ia, char *buf);
 215
 216 /* delay */
 217         extern void bcm_mdelay(uint ms);
 218 /* variable access */
 219         extern char *getvar(char *vars, const char *name);
 220         extern int getintvar(char *vars, const char *name);
 221         extern int getintvararray(char *vars, const char *name, uint8 index);
 222         extern uint getgpiopin(char *vars, char *pin_name, uint def_pin);
 223 #ifdef BCMDBG
 224         extern void prpkt(const char *msg, osl_t * osh, void *p0);
 225 #endif                          /* BCMDBG */
 226 #define bcm_perf_enable()
 227 #define bcmstats(fmt)
 228 #define bcmlog(fmt, a1, a2)
 229 #define bcmdumplog(buf, size)   *buf = '\0'
 230 #define bcmdumplogent(buf, idx) -1
 231
 232 #define bcmtslog(tstamp, fmt, a1, a2)
 233 #define bcmprinttslogs()
 234 #define bcmprinttstamp(us)
 235
 236         extern char *bcm_nvram_vars(uint * length);
 237         extern int bcm_nvram_cache(void *sih);
 238
 239 /* Support for sharing code across in-driver iovar implementations.
 240  * The intent is that a driver use this structure to map iovar names
 241  * to its (private) iovar identifiers, and the lookup function to
 242  * find the entry.  Macros are provided to map ids and get/set actions
 243  * into a single number space for a switch statement.
 244  */
 245
 246 /* iovar structure */
 247         typedef struct bcm_iovar {
 248                 const char *name;       /* name for lookup and display */
 249                 uint16 varid;   /* id for switch */
 250                 uint16 flags;   /* driver-specific flag bits */
 251                 uint16 type;    /* base type of argument */
 252                 uint16 minlen;  /* min length for buffer vars */
 253         } bcm_iovar_t;
 254
 255 /* varid definitions are per-driver, may use these get/set bits */
 256
 257 /* IOVar action bits for id mapping */
 258 #define IOV_GET 0               /* Get an iovar */
 259 #define IOV_SET 1               /* Set an iovar */
 260
 261 /* Varid to actionid mapping */
 262 #define IOV_GVAL(id)            ((id)*2)
 263 #define IOV_SVAL(id)            (((id)*2)+IOV_SET)
 264 #define IOV_ISSET(actionid)     ((actionid & IOV_SET) == IOV_SET)
 265 #define IOV_ID(actionid)        (actionid >> 1)
 266
 267 /* flags are per-driver based on driver attributes */
 268
 269         extern const bcm_iovar_t *bcm_iovar_lookup(const bcm_iovar_t * table,
 270                                                    const char *name);
 271         extern int bcm_iovar_lencheck(const bcm_iovar_t * table, void *arg,
 272                                       int len, bool set);
 273 #if defined(BCMDBG)
 274         extern int bcm_format_ssid(char *buf, const uchar ssid[],
 275                                    uint ssid_len);
 276 #endif
 277
 278 /* Base type definitions */
 279 #define IOVT_VOID       0       /* no value (implictly set only) */
 280 #define IOVT_BOOL       1       /* any value ok (zero/nonzero) */
 281 #define IOVT_INT8       2       /* integer values are range-checked */
 282 #define IOVT_UINT8      3       /* unsigned int 8 bits */
 283 #define IOVT_INT16      4       /* int 16 bits */
 284 #define IOVT_UINT16     5       /* unsigned int 16 bits */
 285 #define IOVT_INT32      6       /* int 32 bits */
 286 #define IOVT_UINT32     7       /* unsigned int 32 bits */
 287 #define IOVT_BUFFER     8       /* buffer is size-checked as per minlen */
 288 #define BCM_IOVT_VALID(type) (((unsigned int)(type)) <= IOVT_BUFFER)
 289
 290 /* Initializer for IOV type strings */
 291 #define BCM_IOV_TYPE_INIT { \
 292         "void", \
 293         "bool", \
 294         "int8", \
 295         "uint8", \
 296         "int16", \
 297         "uint16", \
 298         "int32", \
 299         "uint32", \
 300         "buffer", \
 301         "" }
 302
 303 #define BCM_IOVT_IS_INT(type) (\
 304         (type == IOVT_BOOL) || \
 305         (type == IOVT_INT8) || \
 306         (type == IOVT_UINT8) || \
 307         (type == IOVT_INT16) || \
 308         (type == IOVT_UINT16) || \
 309         (type == IOVT_INT32) || \
 310         (type == IOVT_UINT32))
 311
 312 /* ** driver/apps-shared section ** */
 313
 314 #define BCME_STRLEN             64      /* Max string length for BCM errors */
 315 #define VALID_BCMERROR(e)  ((e <= 0) && (e >= BCME_LAST))
 316
 317 /*
 318  * error codes could be added but the defined ones shouldn't be changed/deleted
 319  * these error codes are exposed to the user code
 320  * when ever a new error code is added to this list
 321  * please update errorstring table with the related error string and
 322  * update osl files with os specific errorcode map
 323 */
 324
 325 #define BCME_OK                         0       /* Success */
 326 #define BCME_ERROR                      -1      /* Error generic */
 327 #define BCME_BADARG                     -2      /* Bad Argument */
 328 #define BCME_BADOPTION                  -3      /* Bad option */
 329 #define BCME_NOTUP                      -4      /* Not up */
 330 #define BCME_NOTDOWN                    -5      /* Not down */
 331 #define BCME_NOTAP                      -6      /* Not AP */
 332 #define BCME_NOTSTA                     -7      /* Not STA  */
 333 #define BCME_BADKEYIDX                  -8      /* BAD Key Index */
 334 #define BCME_RADIOOFF                   -9      /* Radio Off */
 335 #define BCME_NOTBANDLOCKED              -10     /* Not  band locked */
 336 #define BCME_NOCLK                      -11     /* No Clock */
 337 #define BCME_BADRATESET                 -12     /* BAD Rate valueset */
 338 #define BCME_BADBAND                    -13     /* BAD Band */
 339 #define BCME_BUFTOOSHORT                -14     /* Buffer too short */
 340 #define BCME_BUFTOOLONG                 -15     /* Buffer too long */
 341 #define BCME_BUSY                       -16     /* Busy */
 342 #define BCME_NOTASSOCIATED              -17     /* Not Associated */
 343 #define BCME_BADSSIDLEN                 -18     /* Bad SSID len */
 344 #define BCME_OUTOFRANGECHAN             -19     /* Out of Range Channel */
 345 #define BCME_BADCHAN                    -20     /* Bad Channel */
 346 #define BCME_BADADDR                    -21     /* Bad Address */
 347 #define BCME_NORESOURCE                 -22     /* Not Enough Resources */
 348 #define BCME_UNSUPPORTED                -23     /* Unsupported */
 349 #define BCME_BADLEN                     -24     /* Bad length */
 350 #define BCME_NOTREADY                   -25     /* Not Ready */
 351 #define BCME_EPERM                      -26     /* Not Permitted */
 352 #define BCME_NOMEM                      -27     /* No Memory */
 353 #define BCME_ASSOCIATED                 -28     /* Associated */
 354 #define BCME_RANGE                      -29     /* Not In Range */
 355 #define BCME_NOTFOUND                   -30     /* Not Found */
 356 #define BCME_WME_NOT_ENABLED            -31     /* WME Not Enabled */
 357 #define BCME_TSPEC_NOTFOUND             -32     /* TSPEC Not Found */
 358 #define BCME_ACM_NOTSUPPORTED           -33     /* ACM Not Supported */
 359 #define BCME_NOT_WME_ASSOCIATION        -34     /* Not WME Association */
 360 #define BCME_SDIO_ERROR                 -35     /* SDIO Bus Error */
 361 #define BCME_DONGLE_DOWN                -36     /* Dongle Not Accessible */
 362 #define BCME_VERSION                    -37     /* Incorrect version */
 363 #define BCME_TXFAIL                     -38     /* TX failure */
 364 #define BCME_RXFAIL                     -39     /* RX failure */
 365 #define BCME_NODEVICE                   -40     /* Device not present */
 366 #define BCME_NMODE_DISABLED             -41     /* NMODE disabled */
 367 #define BCME_NONRESIDENT                -42     /* access to nonresident overlay */
 368 #define BCME_LAST                       BCME_NONRESIDENT
 369
 370 /* These are collection of BCME Error strings */
 371 #define BCMERRSTRINGTABLE {             \
 372         "OK",                           \
 373         "Undefined error",              \
 374         "Bad Argument",                 \
 375         "Bad Option",                   \
 376         "Not up",                       \
 377         "Not down",                     \
 378         "Not AP",                       \
 379         "Not STA",                      \
 380         "Bad Key Index",                \
 381         "Radio Off",                    \
 382         "Not band locked",              \
 383         "No clock",                     \
 384         "Bad Rate valueset",            \
 385         "Bad Band",                     \
 386         "Buffer too short",             \
 387         "Buffer too long",              \
 388         "Busy",                         \
 389         "Not Associated",               \
 390         "Bad SSID len",                 \
 391         "Out of Range Channel",         \
 392         "Bad Channel",                  \
 393         "Bad Address",                  \
 394         "Not Enough Resources",         \
 395         "Unsupported",                  \
 396         "Bad length",                   \
 397         "Not Ready",                    \
 398         "Not Permitted",                \
 399         "No Memory",                    \
 400         "Associated",                   \
 401         "Not In Range",                 \
 402         "Not Found",                    \
 403         "WME Not Enabled",              \
 404         "TSPEC Not Found",              \
 405         "ACM Not Supported",            \
 406         "Not WME Association",          \
 407         "SDIO Bus Error",               \
 408         "Dongle Not Accessible",        \
 409         "Incorrect version",            \
 410         "TX Failure",                   \
 411         "RX Failure",                   \
 412         "Device Not Present",           \
 413         "NMODE Disabled",               \
 414         "Nonresident overlay access", \
 415 }
 416
 417 #ifndef ABS
 418 #define ABS(a)                  (((a) < 0)?-(a):(a))
 419 #endif                          /* ABS */
 420
 421 #ifndef MIN
 422 #define MIN(a, b)               (((a) < (b))?(a):(b))
 423 #endif                          /* MIN */
 424
 425 #ifndef MAX
 426 #define MAX(a, b)               (((a) > (b))?(a):(b))
 427 #endif                          /* MAX */
 428
 429 #define CEIL(x, y)              (((x) + ((y)-1)) / (y))
 430 #define ROUNDUP(x, y)           ((((x)+((y)-1))/(y))*(y))
 431 #define ISALIGNED(a, x)         (((a) & ((x)-1)) == 0)
 432 #define ALIGN_ADDR(addr, boundary) (void *)(((uintptr)(addr) + (boundary) - 1) \
 433         & ~((boundary) - 1))
 434 #define ISPOWEROF2(x)           ((((x)-1)&(x)) == 0)
 435 #define VALID_MASK(mask)        !((mask) & ((mask) + 1))
 436 #ifndef OFFSETOF
 437 #define OFFSETOF(type, member)  ((uint)(uintptr)&((type *)0)->member)
 438 #endif                          /* OFFSETOF */
 439 #ifndef ARRAYSIZE
 440 #define ARRAYSIZE(a)            (sizeof(a)/sizeof(a[0]))
 441 #endif
 442
 443 /* bit map related macros */
 444 #ifndef setbit
 445 #ifndef NBBY                    /* the BSD family defines NBBY */
 446 #define NBBY    8               /* 8 bits per byte */
 447 #endif                          /* #ifndef NBBY */
 448 #define setbit(a, i)    (((uint8 *)a)[(i)/NBBY] |= 1<<((i)%NBBY))
 449 #define clrbit(a, i)    (((uint8 *)a)[(i)/NBBY] &= ~(1<<((i)%NBBY)))
 450 #define isset(a, i)     (((const uint8 *)a)[(i)/NBBY] & (1<<((i)%NBBY)))
 451 #define isclr(a, i)     ((((const uint8 *)a)[(i)/NBBY] & (1<<((i)%NBBY))) == 0)
 452 #endif                          /* setbit */
 453
 454 #define NBITS(type)     (sizeof(type) * 8)
 455 #define NBITVAL(nbits)  (1 << (nbits))
 456 #define MAXBITVAL(nbits)        ((1 << (nbits)) - 1)
 457 #define NBITMASK(nbits) MAXBITVAL(nbits)
 458 #define MAXNBVAL(nbyte) MAXBITVAL((nbyte) * 8)
 459
 460 /* basic mux operation - can be optimized on several architectures */
 461 #define MUX(pred, true, false) ((pred) ? (true) : (false))
 462
 463 /* modulo inc/dec - assumes x E [0, bound - 1] */
 464 #define MODDEC(x, bound) MUX((x) == 0, (bound) - 1, (x) - 1)
 465 #define MODINC(x, bound) MUX((x) == (bound) - 1, 0, (x) + 1)
 466
 467 /* modulo inc/dec, bound = 2^k */
 468 #define MODDEC_POW2(x, bound) (((x) - 1) & ((bound) - 1))
 469 #define MODINC_POW2(x, bound) (((x) + 1) & ((bound) - 1))
 470
 471 /* modulo add/sub - assumes x, y E [0, bound - 1] */
 472 #define MODADD(x, y, bound) \
 473     MUX((x) + (y) >= (bound), (x) + (y) - (bound), (x) + (y))
 474 #define MODSUB(x, y, bound) \
 475     MUX(((int)(x)) - ((int)(y)) < 0, (x) - (y) + (bound), (x) - (y))
 476
 477 /* module add/sub, bound = 2^k */
 478 #define MODADD_POW2(x, y, bound) (((x) + (y)) & ((bound) - 1))
 479 #define MODSUB_POW2(x, y, bound) (((x) - (y)) & ((bound) - 1))
 480
 481 /* crc defines */
 482 #define CRC8_INIT_VALUE  0xff   /* Initial CRC8 checksum value */
 483 #define CRC8_GOOD_VALUE  0x9f   /* Good final CRC8 checksum value */
 484 #define CRC16_INIT_VALUE 0xffff /* Initial CRC16 checksum value */
 485 #define CRC16_GOOD_VALUE 0xf0b8 /* Good final CRC16 checksum value */
 486
 487 /* bcm_format_flags() bit description structure */
 488         typedef struct bcm_bit_desc {
 489                 uint32 bit;
 490                 const char *name;
 491         } bcm_bit_desc_t;
 492
 493 /* tag_ID/length/value_buffer tuple */
 494         typedef struct bcm_tlv {
 495                 uint8 id;
 496                 uint8 len;
 497                 uint8 data[1];
 498         } bcm_tlv_t;
 499
 500 /* Check that bcm_tlv_t fits into the given buflen */
 501 #define bcm_valid_tlv(elt, buflen) ((buflen) >= 2 && (int)(buflen) >= (int)(2 + (elt)->len))
 502
 503 /* buffer length for ethernet address from bcm_ether_ntoa() */
 504 #define ETHER_ADDR_STR_LEN      18      /* 18-bytes of Ethernet address buffer length */
 505
 506 /* crypto utility function */
 507 /* 128-bit xor: *dst = *src1 xor *src2. dst1, src1 and src2 may have any alignment */
 508         static INLINE void
 509          xor_128bit_block(const uint8 * src1, const uint8 * src2, uint8 * dst) {
 510                 if (
 511 #ifdef __i386__
 512                            1 ||
 513 #endif
 514                            (((uintptr) src1 | (uintptr) src2 | (uintptr) dst) &
 515                             3) == 0) {
 516                         /* ARM CM3 rel time: 1229 (727 if alignment check could be omitted) */
 517                         /* x86 supports unaligned.  This version runs 6x-9x faster on x86. */
 518                         ((uint32 *) dst)[0] =
 519                             ((const uint32 *)src1)[0] ^ ((const uint32 *)
 520                                                          src2)[0];
 521                         ((uint32 *) dst)[1] =
 522                             ((const uint32 *)src1)[1] ^ ((const uint32 *)
 523                                                          src2)[1];
 524                         ((uint32 *) dst)[2] =
 525                             ((const uint32 *)src1)[2] ^ ((const uint32 *)
 526                                                          src2)[2];
 527                         ((uint32 *) dst)[3] =
 528                             ((const uint32 *)src1)[3] ^ ((const uint32 *)
 529                                                          src2)[3];
 530                 } else {
 531                         /* ARM CM3 rel time: 4668 (4191 if alignment check could be omitted) */
 532                         int k;
 533                         for (k = 0; k < 16; k++)
 534                                 dst[k] = src1[k] ^ src2[k];
 535                 }
 536         }
 537
 538 /* externs */
 539 /* crc */
 540         extern uint8 BCMROMFN(hndcrc8) (uint8 * p, uint nbytes, uint8 crc);
 541         extern uint16 BCMROMFN(hndcrc16) (uint8 * p, uint nbytes, uint16 crc);
 542 /* format/print */
 543 #if defined(BCMDBG)
 544         extern int bcm_format_flags(const bcm_bit_desc_t * bd, uint32 flags,
 545                                     char *buf, int len);
 546         extern int bcm_format_hex(char *str, const void *bytes, int len);
 547 #endif
 548 #ifdef BCMDBG
 549         extern void deadbeef(void *p, uint len);
 550 #endif
 551         extern const char *bcm_crypto_algo_name(uint algo);
 552         extern char *bcm_chipname(uint chipid, char *buf, uint len);
 553         extern char *bcm_brev_str(uint32 brev, char *buf);
 554         extern void printbig(char *buf);
 555         extern void prhex(const char *msg, uchar * buf, uint len);
 556
 557 /* IE parsing */
 558         extern bcm_tlv_t *BCMROMFN(bcm_next_tlv) (bcm_tlv_t * elt, int *buflen);
 559         extern bcm_tlv_t *BCMROMFN(bcm_parse_tlvs) (void *buf, int buflen,
 560                                                     uint key);
 561         extern bcm_tlv_t *BCMROMFN(bcm_parse_ordered_tlvs) (void *buf,
 562                                                             int buflen,
 563                                                             uint key);
 564
 565 /* bcmerror */
 566         extern const char *bcmerrorstr(int bcmerror);
 567
 568 /* multi-bool data type: set of bools, mbool is true if any is set */
 569         typedef uint32 mbool;
 570 #define mboolset(mb, bit)               ((mb) |= (bit)) /* set one bool */
 571 #define mboolclr(mb, bit)               ((mb) &= ~(bit))        /* clear one bool */
 572 #define mboolisset(mb, bit)             (((mb) & (bit)) != 0)   /* TRUE if one bool is set */
 573 #define mboolmaskset(mb, mask, val)     ((mb) = (((mb) & ~(mask)) | (val)))
 574
 575 /* power conversion */
 576         extern uint16 BCMROMFN(bcm_qdbm_to_mw) (uint8 qdbm);
 577         extern uint8 BCMROMFN(bcm_mw_to_qdbm) (uint16 mw);
 578
 579 /* generic datastruct to help dump routines */
 580         struct fielddesc {
 581                 const char *nameandfmt;
 582                 uint32 offset;
 583                 uint32 len;
 584         };
 585
 586         extern void bcm_binit(struct bcmstrbuf *b, char *buf, uint size);
 587         extern int bcm_bprintf(struct bcmstrbuf *b, const char *fmt, ...);
 588         extern void bcm_inc_bytes(uchar * num, int num_bytes, uint8 amount);
 589         extern int bcm_cmp_bytes(uchar * arg1, uchar * arg2, uint8 nbytes);
 590         extern void bcm_print_bytes(char *name, const uchar * cdata, int len);
 591
 592         typedef uint32(*bcmutl_rdreg_rtn) (void *arg0, uint arg1,
 593                                            uint32 offset);
 594         extern uint bcmdumpfields(bcmutl_rdreg_rtn func_ptr, void *arg0,
 595                                   uint arg1, struct fielddesc *str, char *buf,
 596                                   uint32 bufsize);
 597
 598         extern uint bcm_mkiovar(char *name, char *data, uint datalen, char *buf,
 599                                 uint len);
 600         extern uint BCMROMFN(bcm_bitcount) (uint8 * bitmap, uint bytelength);
 601
 602 #ifdef __cplusplus
 603 }
 604 #endif
 605
 606 #endif                          /* _bcmutils_h_ */