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   1 /*
   2  * This file is subject to the terms and conditions of the GNU General Public
   3  * License.  See the file "COPYING" in the main directory of this archive
   4  * for more details.
   5  *
   6  * ARC firmware interface defines.
   7  *
   8  * Copyright (C) 1996 David S. Miller (dm@engr.sgi.com)
   9  * Copyright (C) 1999, 2001 Ralf Baechle (ralf@gnu.org)
  10  * Copyright (C) 1999 Silicon Graphics, Inc.
  11  */
  12 #ifndef _ASM_SGIARCS_H
  13 #define _ASM_SGIARCS_H
  14
  15 #include <asm/types.h>
  16 #include <asm/fw/arc/types.h>
  17
  18 /* Various ARCS error codes. */
  19 #define PROM_ESUCCESS                   0x00
  20 #define PROM_E2BIG                      0x01
  21 #define PROM_EACCESS                    0x02
  22 #define PROM_EAGAIN                     0x03
  23 #define PROM_EBADF                      0x04
  24 #define PROM_EBUSY                      0x05
  25 #define PROM_EFAULT                     0x06
  26 #define PROM_EINVAL                     0x07
  27 #define PROM_EIO                        0x08
  28 #define PROM_EISDIR                     0x09
  29 #define PROM_EMFILE                     0x0a
  30 #define PROM_EMLINK                     0x0b
  31 #define PROM_ENAMETOOLONG               0x0c
  32 #define PROM_ENODEV                     0x0d
  33 #define PROM_ENOENT                     0x0e
  34 #define PROM_ENOEXEC                    0x0f
  35 #define PROM_ENOMEM                     0x10
  36 #define PROM_ENOSPC                     0x11
  37 #define PROM_ENOTDIR                    0x12
  38 #define PROM_ENOTTY                     0x13
  39 #define PROM_ENXIO                      0x14
  40 #define PROM_EROFS                      0x15
  41 /* SGI ARCS specific errno's. */
  42 #define PROM_EADDRNOTAVAIL              0x1f
  43 #define PROM_ETIMEDOUT                  0x20
  44 #define PROM_ECONNABORTED               0x21
  45 #define PROM_ENOCONNECT                 0x22
  46
  47 /* Device classes, types, and identifiers for prom
  48  * device inventory queries.
  49  */
  50 enum linux_devclass {
  51         system, processor, cache, adapter, controller, peripheral, memory
  52 };
  53
  54 enum linux_devtypes {
  55         /* Generic stuff. */
  56         Arc, Cpu, Fpu,
  57
  58         /* Primary insn and data caches. */
  59         picache, pdcache,
  60
  61         /* Secondary insn, data, and combined caches. */
  62         sicache, sdcache, sccache,
  63
  64         memdev, eisa_adapter, tc_adapter, scsi_adapter, dti_adapter,
  65         multifunc_adapter, dsk_controller, tp_controller, cdrom_controller,
  66         worm_controller, serial_controller, net_controller, disp_controller,
  67         parallel_controller, ptr_controller, kbd_controller, audio_controller,
  68         misc_controller, disk_peripheral, flpy_peripheral, tp_peripheral,
  69         modem_peripheral, monitor_peripheral, printer_peripheral,
  70         ptr_peripheral, kbd_peripheral, term_peripheral, line_peripheral,
  71         net_peripheral, misc_peripheral, anon
  72 };
  73
  74 enum linux_identifier {
  75         bogus, ronly, removable, consin, consout, input, output
  76 };
  77
  78 /* A prom device tree component. */
  79 struct linux_component {
  80         enum linux_devclass     class;  /* node class */
  81         enum linux_devtypes     type;   /* node type */
  82         enum linux_identifier   iflags; /* node flags */
  83         USHORT                  vers;   /* node version */
  84         USHORT                  rev;    /* node revision */
  85         ULONG                   key;    /* completely magic */
  86         ULONG                   amask;  /* XXX affinity mask??? */
  87         ULONG                   cdsize; /* size of configuration data */
  88         ULONG                   ilen;   /* length of string identifier */
  89         _PULONG                 iname;  /* string identifier */
  90 };
  91 typedef struct linux_component pcomponent;
  92
  93 struct linux_sysid {
  94         char vend[8], prod[8];
  95 };
  96
  97 /* ARCS prom memory descriptors. */
  98 enum arcs_memtypes {
  99         arcs_eblock,  /* exception block */
 100         arcs_rvpage,  /* ARCS romvec page */
 101         arcs_fcontig, /* Contiguous and free */
 102         arcs_free,    /* Generic free memory */
 103         arcs_bmem,    /* Borken memory, don't use */
 104         arcs_prog,    /* A loaded program resides here */
 105         arcs_atmp,    /* ARCS temporary storage area, wish Sparc OpenBoot told this */
 106         arcs_aperm,   /* ARCS permanent storage... */
 107 };
 108
 109 /* ARC has slightly different types than ARCS */
 110 enum arc_memtypes {
 111         arc_eblock,  /* exception block */
 112         arc_rvpage,  /* romvec page */
 113         arc_free,    /* Generic free memory */
 114         arc_bmem,    /* Borken memory, don't use */
 115         arc_prog,    /* A loaded program resides here */
 116         arc_atmp,    /* temporary storage area */
 117         arc_aperm,   /* permanent storage */
 118         arc_fcontig, /* Contiguous and free */
 119 };
 120
 121 union linux_memtypes {
 122     enum arcs_memtypes arcs;
 123     enum arc_memtypes arc;
 124 };
 125
 126 struct linux_mdesc {
 127         union linux_memtypes type;
 128         ULONG base;
 129         ULONG pages;
 130 };
 131
 132 /* Time of day descriptor. */
 133 struct linux_tinfo {
 134         unsigned short yr;
 135         unsigned short mnth;
 136         unsigned short day;
 137         unsigned short hr;
 138         unsigned short min;
 139         unsigned short sec;
 140         unsigned short msec;
 141 };
 142
 143 /* ARCS virtual dirents. */
 144 struct linux_vdirent {
 145         ULONG namelen;
 146         unsigned char attr;
 147         char fname[32]; /* XXX imperical, should be a define */
 148 };
 149
 150 /* Other stuff for files. */
 151 enum linux_omode {
 152         rdonly, wronly, rdwr, wronly_creat, rdwr_creat,
 153         wronly_ssede, rdwr_ssede, dirent, dirent_creat
 154 };
 155
 156 enum linux_seekmode {
 157         absolute, relative
 158 };
 159
 160 enum linux_mountops {
 161         media_load, media_unload
 162 };
 163
 164 /* This prom has a bolixed design. */
 165 struct linux_bigint {
 166 #ifdef __MIPSEL__
 167         u32 lo;
 168         s32 hi;
 169 #else /* !(__MIPSEL__) */
 170         s32 hi;
 171         u32 lo;
 172 #endif
 173 };
 174
 175 struct linux_finfo {
 176         struct linux_bigint   begin;
 177         struct linux_bigint   end;
 178         struct linux_bigint   cur;
 179         enum linux_devtypes   dtype;
 180         unsigned long         namelen;
 181         unsigned char         attr;
 182         char                  name[32]; /* XXX imperical, should be define */
 183 };
 184
 185 /* This describes the vector containing function pointers to the ARC
 186    firmware functions.  */
 187 struct linux_romvec {
 188         LONG    load;                   /* Load an executable image. */
 189         LONG    invoke;                 /* Invoke a standalong image. */
 190         LONG    exec;                   /* Load and begin execution of a
 191                                            standalone image. */
 192         LONG    halt;                   /* Halt the machine. */
 193         LONG    pdown;                  /* Power down the machine. */
 194         LONG    restart;                /* XXX soft reset??? */
 195         LONG    reboot;                 /* Reboot the machine. */
 196         LONG    imode;                  /* Enter PROM interactive mode. */
 197         LONG    _unused1;               /* Was ReturnFromMain(). */
 198
 199         /* PROM device tree interface. */
 200         LONG    next_component;
 201         LONG    child_component;
 202         LONG    parent_component;
 203         LONG    component_data;
 204         LONG    child_add;
 205         LONG    comp_del;
 206         LONG    component_by_path;
 207
 208         /* Misc. stuff. */
 209         LONG    cfg_save;
 210         LONG    get_sysid;
 211
 212         /* Probing for memory. */
 213         LONG    get_mdesc;
 214         LONG    _unused2;               /* was Signal() */
 215
 216         LONG    get_tinfo;
 217         LONG    get_rtime;
 218
 219         /* File type operations. */
 220         LONG    get_vdirent;
 221         LONG    open;
 222         LONG    close;
 223         LONG    read;
 224         LONG    get_rstatus;
 225         LONG    write;
 226         LONG    seek;
 227         LONG    mount;
 228
 229         /* Dealing with firmware environment variables. */
 230         LONG    get_evar;
 231         LONG    set_evar;
 232
 233         LONG    get_finfo;
 234         LONG    set_finfo;
 235
 236         /* Miscellaneous. */
 237         LONG    cache_flush;
 238         LONG    TestUnicodeCharacter;           /* ARC; not sure if ARCS too */
 239         LONG    GetDisplayStatus;
 240 };
 241
 242 /* The SGI ARCS parameter block is in a fixed location for standalone
 243  * programs to access PROM facilities easily.
 244  */
 245 typedef struct _SYSTEM_PARAMETER_BLOCK {
 246         ULONG                   magic;          /* magic cookie */
 247 #define PROMBLOCK_MAGIC      0x53435241
 248
 249         ULONG                   len;            /* length of parm block */
 250         USHORT                  ver;            /* ARCS firmware version */
 251         USHORT                  rev;            /* ARCS firmware revision */
 252         _PLONG                  rs_block;       /* Restart block. */
 253         _PLONG                  dbg_block;      /* Debug block. */
 254         _PLONG                  gevect;         /* XXX General vector??? */
 255         _PLONG                  utlbvect;       /* XXX UTLB vector??? */
 256         ULONG                   rveclen;        /* Size of romvec struct. */
 257         _PVOID                  romvec;         /* Function interface. */
 258         ULONG                   pveclen;        /* Length of private vector. */
 259         _PVOID                  pvector;        /* Private vector. */
 260         ULONG                   adap_cnt;       /* Adapter count. */
 261         ULONG                   adap_typ0;      /* First adapter type. */
 262         ULONG                   adap_vcnt0;     /* Adapter 0 vector count. */
 263         _PVOID                  adap_vector;    /* Adapter 0 vector ptr. */
 264         ULONG                   adap_typ1;      /* Second adapter type. */
 265         ULONG                   adap_vcnt1;     /* Adapter 1 vector count. */
 266         _PVOID                  adap_vector1;   /* Adapter 1 vector ptr. */
 267         /* More adapter vectors go here... */
 268 } SYSTEM_PARAMETER_BLOCK, *PSYSTEM_PARAMETER_BLOCK;
 269
 270 #define PROMBLOCK ((PSYSTEM_PARAMETER_BLOCK) (int)0xA0001000)
 271 #define ROMVECTOR ((struct linux_romvec *) (long)(PROMBLOCK)->romvec)
 272
 273 /* Cache layout parameter block. */
 274 union linux_cache_key {
 275         struct param {
 276 #ifdef __MIPSEL__
 277                 unsigned short size;
 278                 unsigned char lsize;
 279                 unsigned char bsize;
 280 #else /* !(__MIPSEL__) */
 281                 unsigned char bsize;
 282                 unsigned char lsize;
 283                 unsigned short size;
 284 #endif
 285         } info;
 286         unsigned long allinfo;
 287 };
 288
 289 /* Configuration data. */
 290 struct linux_cdata {
 291         char *name;
 292         int mlen;
 293         enum linux_devtypes type;
 294 };
 295
 296 /* Common SGI ARCS firmware file descriptors. */
 297 #define SGIPROM_STDIN     0
 298 #define SGIPROM_STDOUT    1
 299
 300 /* Common SGI ARCS firmware file types. */
 301 #define SGIPROM_ROFILE    0x01  /* read-only file */
 302 #define SGIPROM_HFILE     0x02  /* hidden file */
 303 #define SGIPROM_SFILE     0x04  /* System file */
 304 #define SGIPROM_AFILE     0x08  /* Archive file */
 305 #define SGIPROM_DFILE     0x10  /* Directory file */
 306 #define SGIPROM_DELFILE   0x20  /* Deleted file */
 307
 308 /* SGI ARCS boot record information. */
 309 struct sgi_partition {
 310         unsigned char flag;
 311 #define SGIPART_UNUSED 0x00
 312 #define SGIPART_ACTIVE 0x80
 313
 314         unsigned char shead, ssect, scyl; /* unused */
 315         unsigned char systype; /* OS type, Irix or NT */
 316         unsigned char ehead, esect, ecyl; /* unused */
 317         unsigned char rsect0, rsect1, rsect2, rsect3;
 318         unsigned char tsect0, tsect1, tsect2, tsect3;
 319 };
 320
 321 #define SGIBBLOCK_MAGIC   0xaa55
 322 #define SGIBBLOCK_MAXPART 0x0004
 323
 324 struct sgi_bootblock {
 325         unsigned char _unused[446];
 326         struct sgi_partition partitions[SGIBBLOCK_MAXPART];
 327         unsigned short magic;
 328 };
 329
 330 /* BIOS parameter block. */
 331 struct sgi_bparm_block {
 332         unsigned short bytes_sect;    /* bytes per sector */
 333         unsigned char  sect_clust;    /* sectors per cluster */
 334         unsigned short sect_resv;     /* reserved sectors */
 335         unsigned char  nfats;         /* # of allocation tables */
 336         unsigned short nroot_dirents; /* # of root directory entries */
 337         unsigned short sect_volume;   /* sectors in volume */
 338         unsigned char  media_type;    /* media descriptor */
 339         unsigned short sect_fat;      /* sectors per allocation table */
 340         unsigned short sect_track;    /* sectors per track */
 341         unsigned short nheads;        /* # of heads */
 342         unsigned short nhsects;       /* # of hidden sectors */
 343 };
 344
 345 struct sgi_bsector {
 346         unsigned char   jmpinfo[3];
 347         unsigned char   manuf_name[8];
 348         struct sgi_bparm_block info;
 349 };
 350
 351 /* Debugging block used with SGI symmon symbolic debugger. */
 352 #define SMB_DEBUG_MAGIC   0xfeeddead
 353 struct linux_smonblock {
 354         unsigned long   magic;
 355         void            (*handler)(void);  /* Breakpoint routine. */
 356         unsigned long   dtable_base;       /* Base addr of dbg table. */
 357         int             (*printf)(const char *fmt, ...);
 358         unsigned long   btable_base;       /* Breakpoint table. */
 359         unsigned long   mpflushreqs;       /* SMP cache flush request list. */
 360         unsigned long   ntab;              /* Name table. */
 361         unsigned long   stab;              /* Symbol table. */
 362         int             smax;              /* Max # of symbols. */
 363 };
 364
 365 /*
 366  * Macros for calling a 32-bit ARC implementation from 64-bit code
 367  */
 368
 369 #if defined(CONFIG_64BIT) && defined(CONFIG_ARC32)
 370
 371 #define __arc_clobbers                                                  \
 372         "$2", "$3" /* ... */, "$8", "$9", "$10", "$11",                         \
 373         "$12", "$13", "$14", "$15", "$16", "$24", "$25", "$31"
 374
 375 #define ARC_CALL0(dest)                                                 \
 376 ({      long __res;                                                     \
 377         long __vec = (long) romvec->dest;                               \
 378         __asm__ __volatile__(                                           \
 379         "dsubu\t$29, 32\n\t"                                            \
 380         "jalr\t%1\n\t"                                                  \
 381         "daddu\t$29, 32\n\t"                                            \
 382         "move\t%0, $2"                                                  \
 383         : "=r" (__res), "=r" (__vec)                                    \
 384         : "1" (__vec)                                                   \
 385         : __arc_clobbers, "$4", "$5", "$6", "$7");                      \
 386         (unsigned long) __res;                                          \
 387 })
 388
 389 #define ARC_CALL1(dest, a1)                                             \
 390 ({      long __res;                                                     \
 391         register signed int __a1 __asm__("$4") = (int) (long) (a1);     \
 392         long __vec = (long) romvec->dest;                               \
 393         __asm__ __volatile__(                                           \
 394         "dsubu\t$29, 32\n\t"                                            \
 395         "jalr\t%1\n\t"                                                  \
 396         "daddu\t$29, 32\n\t"                                            \
 397         "move\t%0, $2"                                                  \
 398         : "=r" (__res), "=r" (__vec)                                    \
 399         : "1" (__vec), "r" (__a1)                                       \
 400         : __arc_clobbers, "$5", "$6", "$7");                            \
 401         (unsigned long) __res;                                          \
 402 })
 403
 404 #define ARC_CALL2(dest, a1, a2)                                         \
 405 ({      long __res;                                                     \
 406         register signed int __a1 __asm__("$4") = (int) (long) (a1);     \
 407         register signed int __a2 __asm__("$5") = (int) (long) (a2);     \
 408         long __vec = (long) romvec->dest;                               \
 409         __asm__ __volatile__(                                           \
 410         "dsubu\t$29, 32\n\t"                                            \
 411         "jalr\t%1\n\t"                                                  \
 412         "daddu\t$29, 32\n\t"                                            \
 413         "move\t%0, $2"                                                  \
 414         : "=r" (__res), "=r" (__vec)                                    \
 415         : "1" (__vec), "r" (__a1), "r" (__a2)                           \
 416         : __arc_clobbers, "$6", "$7");                                  \
 417         __res;                                                          \
 418 })
 419
 420 #define ARC_CALL3(dest, a1, a2, a3)                                     \
 421 ({      long __res;                                                     \
 422         register signed int __a1 __asm__("$4") = (int) (long) (a1);     \
 423         register signed int __a2 __asm__("$5") = (int) (long) (a2);     \
 424         register signed int __a3 __asm__("$6") = (int) (long) (a3);     \
 425         long __vec = (long) romvec->dest;                               \
 426         __asm__ __volatile__(                                           \
 427         "dsubu\t$29, 32\n\t"                                            \
 428         "jalr\t%1\n\t"                                                  \
 429         "daddu\t$29, 32\n\t"                                            \
 430         "move\t%0, $2"                                                  \
 431         : "=r" (__res), "=r" (__vec)                                    \
 432         : "1" (__vec), "r" (__a1), "r" (__a2), "r" (__a3)               \
 433         : __arc_clobbers, "$7");                                        \
 434         __res;                                                          \
 435 })
 436
 437 #define ARC_CALL4(dest, a1, a2, a3, a4)                                 \
 438 ({      long __res;                                                     \
 439         register signed int __a1 __asm__("$4") = (int) (long) (a1);     \
 440         register signed int __a2 __asm__("$5") = (int) (long) (a2);     \
 441         register signed int __a3 __asm__("$6") = (int) (long) (a3);     \
 442         register signed int __a4 __asm__("$7") = (int) (long) (a4);     \
 443         long __vec = (long) romvec->dest;                               \
 444         __asm__ __volatile__(                                           \
 445         "dsubu\t$29, 32\n\t"                                            \
 446         "jalr\t%1\n\t"                                                  \
 447         "daddu\t$29, 32\n\t"                                            \
 448         "move\t%0, $2"                                                  \
 449         : "=r" (__res), "=r" (__vec)                                    \
 450         : "1" (__vec), "r" (__a1), "r" (__a2), "r" (__a3),              \
 451           "r" (__a4)                                                    \
 452         : __arc_clobbers);                                              \
 453         __res;                                                          \
 454 })
 455
 456 #define ARC_CALL5(dest, a1, a2, a3, a4, a5)                                     \
 457 ({      long __res;                                                     \
 458         register signed int __a1 __asm__("$4") = (int) (long) (a1);     \
 459         register signed int __a2 __asm__("$5") = (int) (long) (a2);     \
 460         register signed int __a3 __asm__("$6") = (int) (long) (a3);     \
 461         register signed int __a4 __asm__("$7") = (int) (long) (a4);     \
 462         register signed int __a5 = (int) (long) (a5);                   \
 463         long __vec = (long) romvec->dest;                               \
 464         __asm__ __volatile__(                                           \
 465         "dsubu\t$29, 32\n\t"                                            \
 466         "sw\t%7, 16($29)\n\t"                                           \
 467         "jalr\t%1\n\t"                                                  \
 468         "daddu\t$29, 32\n\t"                                            \
 469         "move\t%0, $2"                                                  \
 470         : "=r" (__res), "=r" (__vec)                                    \
 471         : "1" (__vec),                                                  \
 472           "r" (__a1), "r" (__a2), "r" (__a3), "r" (__a4),               \
 473           "r" (__a5)                                                    \
 474         : __arc_clobbers);                                              \
 475         __res;                                                          \
 476 })
 477
 478 #endif /* defined(CONFIG_64BIT) && defined(CONFIG_ARC32) */
 479
 480 #if (defined(CONFIG_32BIT) && defined(CONFIG_ARC32)) ||         \
 481     (defined(CONFIG_64BIT) && defined(CONFIG_ARC64))
 482
 483 #define ARC_CALL0(dest)                                                 \
 484 ({      long __res;                                                     \
 485         long (*__vec)(void) = (void *) romvec->dest;                    \
 486                                                                         \
 487         __res = __vec();                                                \
 488         __res;                                                          \
 489 })
 490
 491 #define ARC_CALL1(dest, a1)                                             \
 492 ({      long __res;                                                     \
 493         long __a1 = (long) (a1);                                        \
 494         long (*__vec)(long) = (void *) romvec->dest;                    \
 495                                                                         \
 496         __res = __vec(__a1);                                            \
 497         __res;                                                          \
 498 })
 499
 500 #define ARC_CALL2(dest, a1, a2)                                         \
 501 ({      long __res;                                                     \
 502         long __a1 = (long) (a1);                                        \
 503         long __a2 = (long) (a2);                                        \
 504         long (*__vec)(long, long) = (void *) romvec->dest;              \
 505                                                                         \
 506         __res = __vec(__a1, __a2);                                      \
 507         __res;                                                          \
 508 })
 509
 510 #define ARC_CALL3(dest, a1, a2, a3)                                     \
 511 ({      long __res;                                                     \
 512         long __a1 = (long) (a1);                                        \
 513         long __a2 = (long) (a2);                                        \
 514         long __a3 = (long) (a3);                                        \
 515         long (*__vec)(long, long, long) = (void *) romvec->dest;        \
 516                                                                         \
 517         __res = __vec(__a1, __a2, __a3);                                \
 518         __res;                                                          \
 519 })
 520
 521 #define ARC_CALL4(dest, a1, a2, a3, a4)                                 \
 522 ({      long __res;                                                     \
 523         long __a1 = (long) (a1);                                        \
 524         long __a2 = (long) (a2);                                        \
 525         long __a3 = (long) (a3);                                        \
 526         long __a4 = (long) (a4);                                        \
 527         long (*__vec)(long, long, long, long) = (void *) romvec->dest;  \
 528                                                                         \
 529         __res = __vec(__a1, __a2, __a3, __a4);                          \
 530         __res;                                                          \
 531 })
 532
 533 #define ARC_CALL5(dest, a1, a2, a3, a4, a5)                             \
 534 ({      long __res;                                                     \
 535         long __a1 = (long) (a1);                                        \
 536         long __a2 = (long) (a2);                                        \
 537         long __a3 = (long) (a3);                                        \
 538         long __a4 = (long) (a4);                                        \
 539         long __a5 = (long) (a5);                                        \
 540         long (*__vec)(long, long, long, long, long);                    \
 541         __vec = (void *) romvec->dest;                                  \
 542                                                                         \
 543         __res = __vec(__a1, __a2, __a3, __a4, __a5);                    \
 544         __res;                                                          \
 545 })
 546 #endif /* both kernel and ARC either 32-bit or 64-bit */
 547
 548 #endif /* _ASM_SGIARCS_H */