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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 <linux/config.h>
  16 #include <asm/types.h>
  17 #include <asm/arc/types.h>
  18
  19 /* Various ARCS error codes. */
  20 #define PROM_ESUCCESS                   0x00
  21 #define PROM_E2BIG                      0x01
  22 #define PROM_EACCESS                    0x02
  23 #define PROM_EAGAIN                     0x03
  24 #define PROM_EBADF                      0x04
  25 #define PROM_EBUSY                      0x05
  26 #define PROM_EFAULT                     0x06
  27 #define PROM_EINVAL                     0x07
  28 #define PROM_EIO                        0x08
  29 #define PROM_EISDIR                     0x09
  30 #define PROM_EMFILE                     0x0a
  31 #define PROM_EMLINK                     0x0b
  32 #define PROM_ENAMETOOLONG               0x0c
  33 #define PROM_ENODEV                     0x0d
  34 #define PROM_ENOENT                     0x0e
  35 #define PROM_ENOEXEC                    0x0f
  36 #define PROM_ENOMEM                     0x10
  37 #define PROM_ENOSPC                     0x11
  38 #define PROM_ENOTDIR                    0x12
  39 #define PROM_ENOTTY                     0x13
  40 #define PROM_ENXIO                      0x14
  41 #define PROM_EROFS                      0x15
  42 /* SGI ARCS specific errno's. */
  43 #define PROM_EADDRNOTAVAIL              0x1f
  44 #define PROM_ETIMEDOUT                  0x20
  45 #define PROM_ECONNABORTED               0x21
  46 #define PROM_ENOCONNECT                 0x22
  47
  48 /* Device classes, types, and identifiers for prom
  49  * device inventory queries.
  50  */
  51 enum linux_devclass {
  52         system, processor, cache, adapter, controller, peripheral, memory
  53 };
  54
  55 enum linux_devtypes {
  56         /* Generic stuff. */
  57         Arc, Cpu, Fpu,
  58
  59         /* Primary insn and data caches. */
  60         picache, pdcache,
  61
  62         /* Secondary insn, data, and combined caches. */
  63         sicache, sdcache, sccache,
  64
  65         memdev, eisa_adapter, tc_adapter, scsi_adapter, dti_adapter,
  66         multifunc_adapter, dsk_controller, tp_controller, cdrom_controller,
  67         worm_controller, serial_controller, net_controller, disp_controller,
  68         parallel_controller, ptr_controller, kbd_controller, audio_controller,
  69         misc_controller, disk_peripheral, flpy_peripheral, tp_peripheral,
  70         modem_peripheral, monitor_peripheral, printer_peripheral,
  71         ptr_peripheral, kbd_peripheral, term_peripheral, line_peripheral,
  72         net_peripheral, misc_peripheral, anon
  73 };
  74
  75 enum linux_identifier {
  76         bogus, ronly, removable, consin, consout, input, output
  77 };
  78
  79 /* A prom device tree component. */
  80 struct linux_component {
  81         enum linux_devclass     class;  /* node class */
  82         enum linux_devtypes     type;   /* node type */
  83         enum linux_identifier   iflags; /* node flags */
  84         USHORT                  vers;   /* node version */
  85         USHORT                  rev;    /* node revision */
  86         ULONG                   key;    /* completely magic */
  87         ULONG                   amask;  /* XXX affinity mask??? */
  88         ULONG                   cdsize; /* size of configuration data */
  89         ULONG                   ilen;   /* length of string identifier */
  90         _PULONG                 iname;  /* string identifier */
  91 };
  92 typedef struct linux_component pcomponent;
  93
  94 struct linux_sysid {
  95         char vend[8], prod[8];
  96 };
  97
  98 /* ARCS prom memory descriptors. */
  99 enum arcs_memtypes {
 100         arcs_eblock,  /* exception block */
 101         arcs_rvpage,  /* ARCS romvec page */
 102         arcs_fcontig, /* Contiguous and free */
 103         arcs_free,    /* Generic free memory */
 104         arcs_bmem,    /* Borken memory, don't use */
 105         arcs_prog,    /* A loaded program resides here */
 106         arcs_atmp,    /* ARCS temporary storage area, wish Sparc OpenBoot told this */
 107         arcs_aperm,   /* ARCS permanent storage... */
 108 };
 109
 110 /* ARC has slightly different types than ARCS */
 111 enum arc_memtypes {
 112         arc_eblock,  /* exception block */
 113         arc_rvpage,  /* romvec page */
 114         arc_free,    /* Generic free memory */
 115         arc_bmem,    /* Borken memory, don't use */
 116         arc_prog,    /* A loaded program resides here */
 117         arc_atmp,    /* temporary storage area */
 118         arc_aperm,   /* permanent storage */
 119         arc_fcontig, /* Contiguous and free */
 120 };
 121
 122 union linux_memtypes {
 123     enum arcs_memtypes arcs;
 124     enum arc_memtypes arc;
 125 };
 126
 127 struct linux_mdesc {
 128         union linux_memtypes type;
 129         ULONG base;
 130         ULONG pages;
 131 };
 132
 133 /* Time of day descriptor. */
 134 struct linux_tinfo {
 135         unsigned short yr;
 136         unsigned short mnth;
 137         unsigned short day;
 138         unsigned short hr;
 139         unsigned short min;
 140         unsigned short sec;
 141         unsigned short msec;
 142 };
 143
 144 /* ARCS virtual dirents. */
 145 struct linux_vdirent {
 146         ULONG namelen;
 147         unsigned char attr;
 148         char fname[32]; /* XXX imperical, should be a define */
 149 };
 150
 151 /* Other stuff for files. */
 152 enum linux_omode {
 153         rdonly, wronly, rdwr, wronly_creat, rdwr_creat,
 154         wronly_ssede, rdwr_ssede, dirent, dirent_creat
 155 };
 156
 157 enum linux_seekmode {
 158         absolute, relative
 159 };
 160
 161 enum linux_mountops {
 162         media_load, media_unload
 163 };
 164
 165 /* This prom has a bolixed design. */
 166 struct linux_bigint {
 167 #ifdef __MIPSEL__
 168         u32 lo;
 169         s32 hi;
 170 #else /* !(__MIPSEL__) */
 171         s32 hi;
 172         u32 lo;
 173 #endif
 174 };
 175
 176 struct linux_finfo {
 177         struct linux_bigint   begin;
 178         struct linux_bigint   end;
 179         struct linux_bigint   cur;
 180         enum linux_devtypes   dtype;
 181         unsigned long         namelen;
 182         unsigned char         attr;
 183         char                  name[32]; /* XXX imperical, should be define */
 184 };
 185
 186 /* This describes the vector containing function pointers to the ARC
 187    firmware functions.  */
 188 struct linux_romvec {
 189         LONG    load;                   /* Load an executable image. */
 190         LONG    invoke;                 /* Invoke a standalong image. */
 191         LONG    exec;                   /* Load and begin execution of a
 192                                            standalone image. */
 193         LONG    halt;                   /* Halt the machine. */
 194         LONG    pdown;                  /* Power down the machine. */
 195         LONG    restart;                /* XXX soft reset??? */
 196         LONG    reboot;                 /* Reboot the machine. */
 197         LONG    imode;                  /* Enter PROM interactive mode. */
 198         LONG    _unused1;               /* Was ReturnFromMain(). */
 199
 200         /* PROM device tree interface. */
 201         LONG    next_component;
 202         LONG    child_component;
 203         LONG    parent_component;
 204         LONG    component_data;
 205         LONG    child_add;
 206         LONG    comp_del;
 207         LONG    component_by_path;
 208
 209         /* Misc. stuff. */
 210         LONG    cfg_save;
 211         LONG    get_sysid;
 212
 213         /* Probing for memory. */
 214         LONG    get_mdesc;
 215         LONG    _unused2;               /* was Signal() */
 216
 217         LONG    get_tinfo;
 218         LONG    get_rtime;
 219
 220         /* File type operations. */
 221         LONG    get_vdirent;
 222         LONG    open;
 223         LONG    close;
 224         LONG    read;
 225         LONG    get_rstatus;
 226         LONG    write;
 227         LONG    seek;
 228         LONG    mount;
 229
 230         /* Dealing with firmware environment variables. */
 231         LONG    get_evar;
 232         LONG    set_evar;
 233
 234         LONG    get_finfo;
 235         LONG    set_finfo;
 236
 237         /* Miscellaneous. */
 238         LONG    cache_flush;
 239         LONG    TestUnicodeCharacter;           /* ARC; not sure if ARCS too */
 240         LONG    GetDisplayStatus;
 241 };
 242
 243 /* The SGI ARCS parameter block is in a fixed location for standalone
 244  * programs to access PROM facilities easily.
 245  */
 246 typedef struct _SYSTEM_PARAMETER_BLOCK {
 247         ULONG                   magic;          /* magic cookie */
 248 #define PROMBLOCK_MAGIC      0x53435241
 249
 250         ULONG                   len;            /* length of parm block */
 251         USHORT                  ver;            /* ARCS firmware version */
 252         USHORT                  rev;            /* ARCS firmware revision */
 253         _PLONG                  rs_block;       /* Restart block. */
 254         _PLONG                  dbg_block;      /* Debug block. */
 255         _PLONG                  gevect;         /* XXX General vector??? */
 256         _PLONG                  utlbvect;       /* XXX UTLB vector??? */
 257         ULONG                   rveclen;        /* Size of romvec struct. */
 258         _PVOID                  romvec;         /* Function interface. */
 259         ULONG                   pveclen;        /* Length of private vector. */
 260         _PVOID                  pvector;        /* Private vector. */
 261         ULONG                   adap_cnt;       /* Adapter count. */
 262         ULONG                   adap_typ0;      /* First adapter type. */
 263         ULONG                   adap_vcnt0;     /* Adapter 0 vector count. */
 264         _PVOID                  adap_vector;    /* Adapter 0 vector ptr. */
 265         ULONG                   adap_typ1;      /* Second adapter type. */
 266         ULONG                   adap_vcnt1;     /* Adapter 1 vector count. */
 267         _PVOID                  adap_vector1;   /* Adapter 1 vector ptr. */
 268         /* More adapter vectors go here... */
 269 } SYSTEM_PARAMETER_BLOCK, *PSYSTEM_PARAMETER_BLOCK;
 270
 271 #define PROMBLOCK ((PSYSTEM_PARAMETER_BLOCK) (int)0xA0001000)
 272 #define ROMVECTOR ((struct linux_romvec *) (long)(PROMBLOCK)->romvec)
 273
 274 /* Cache layout parameter block. */
 275 union linux_cache_key {
 276         struct param {
 277 #ifdef __MIPSEL__
 278                 unsigned short size;
 279                 unsigned char lsize;
 280                 unsigned char bsize;
 281 #else /* !(__MIPSEL__) */
 282                 unsigned char bsize;
 283                 unsigned char lsize;
 284                 unsigned short size;
 285 #endif
 286         } info;
 287         unsigned long allinfo;
 288 };
 289
 290 /* Configuration data. */
 291 struct linux_cdata {
 292         char *name;
 293         int mlen;
 294         enum linux_devtypes type;
 295 };
 296
 297 /* Common SGI ARCS firmware file descriptors. */
 298 #define SGIPROM_STDIN     0
 299 #define SGIPROM_STDOUT    1
 300
 301 /* Common SGI ARCS firmware file types. */
 302 #define SGIPROM_ROFILE    0x01  /* read-only file */
 303 #define SGIPROM_HFILE     0x02  /* hidden file */
 304 #define SGIPROM_SFILE     0x04  /* System file */
 305 #define SGIPROM_AFILE     0x08  /* Archive file */
 306 #define SGIPROM_DFILE     0x10  /* Directory file */
 307 #define SGIPROM_DELFILE   0x20  /* Deleted file */
 308
 309 /* SGI ARCS boot record information. */
 310 struct sgi_partition {
 311         unsigned char flag;
 312 #define SGIPART_UNUSED 0x00
 313 #define SGIPART_ACTIVE 0x80
 314
 315         unsigned char shead, ssect, scyl; /* unused */
 316         unsigned char systype; /* OS type, Irix or NT */
 317         unsigned char ehead, esect, ecyl; /* unused */
 318         unsigned char rsect0, rsect1, rsect2, rsect3;
 319         unsigned char tsect0, tsect1, tsect2, tsect3;
 320 };
 321
 322 #define SGIBBLOCK_MAGIC   0xaa55
 323 #define SGIBBLOCK_MAXPART 0x0004
 324
 325 struct sgi_bootblock {
 326         unsigned char _unused[446];
 327         struct sgi_partition partitions[SGIBBLOCK_MAXPART];
 328         unsigned short magic;
 329 };
 330
 331 /* BIOS parameter block. */
 332 struct sgi_bparm_block {
 333         unsigned short bytes_sect;    /* bytes per sector */
 334         unsigned char  sect_clust;    /* sectors per cluster */
 335         unsigned short sect_resv;     /* reserved sectors */
 336         unsigned char  nfats;         /* # of allocation tables */
 337         unsigned short nroot_dirents; /* # of root directory entries */
 338         unsigned short sect_volume;   /* sectors in volume */
 339         unsigned char  media_type;    /* media descriptor */
 340         unsigned short sect_fat;      /* sectors per allocation table */
 341         unsigned short sect_track;    /* sectors per track */
 342         unsigned short nheads;        /* # of heads */
 343         unsigned short nhsects;       /* # of hidden sectors */
 344 };
 345
 346 struct sgi_bsector {
 347         unsigned char   jmpinfo[3];
 348         unsigned char   manuf_name[8];
 349         struct sgi_bparm_block info;
 350 };
 351
 352 /* Debugging block used with SGI symmon symbolic debugger. */
 353 #define SMB_DEBUG_MAGIC   0xfeeddead
 354 struct linux_smonblock {
 355         unsigned long   magic;
 356         void            (*handler)(void);  /* Breakpoint routine. */
 357         unsigned long   dtable_base;       /* Base addr of dbg table. */
 358         int             (*printf)(const char *fmt, ...);
 359         unsigned long   btable_base;       /* Breakpoint table. */
 360         unsigned long   mpflushreqs;       /* SMP cache flush request list. */
 361         unsigned long   ntab;              /* Name table. */
 362         unsigned long   stab;              /* Symbol table. */
 363         int             smax;              /* Max # of symbols. */
 364 };
 365
 366 /*
 367  * Macros for calling a 32-bit ARC implementation from 64-bit code
 368  */
 369
 370 #if defined(CONFIG_MIPS64) && defined(CONFIG_ARC32)
 371
 372 #define __arc_clobbers                                                  \
 373         "$2","$3" /* ... */, "$8","$9","$10","$11",                     \
 374         "$12","$13","$14","$15","$16","$24","$25","$31"
 375
 376 #define ARC_CALL0(dest)                                                 \
 377 ({      long __res;                                                     \
 378         long __vec = (long) romvec->dest;                               \
 379         __asm__ __volatile__(                                           \
 380         "dsubu\t$29, 32\n\t"                                            \
 381         "jalr\t%1\n\t"                                                  \
 382         "daddu\t$29, 32\n\t"                                            \
 383         "move\t%0, $2"                                                  \
 384         : "=r" (__res), "=r" (__vec)                                    \
 385         : "1" (__vec)                                                   \
 386         : __arc_clobbers, "$4","$5","$6","$7");                         \
 387         (unsigned long) __res;                                          \
 388 })
 389
 390 #define ARC_CALL1(dest,a1)                                              \
 391 ({      long __res;                                                     \
 392         register signed int __a1 __asm__("$4") = (int) (long) (a1);     \
 393         long __vec = (long) romvec->dest;                               \
 394         __asm__ __volatile__(                                           \
 395         "dsubu\t$29, 32\n\t"                                            \
 396         "jalr\t%1\n\t"                                                  \
 397         "daddu\t$29, 32\n\t"                                            \
 398         "move\t%0, $2"                                                  \
 399         : "=r" (__res), "=r" (__vec)                                    \
 400         : "1" (__vec), "r" (__a1)                                       \
 401         : __arc_clobbers, "$5","$6","$7");                              \
 402         (unsigned long) __res;                                          \
 403 })
 404
 405 #define ARC_CALL2(dest,a1,a2)                                           \
 406 ({      long __res;                                                     \
 407         register signed int __a1 __asm__("$4") = (int) (long) (a1);     \
 408         register signed int __a2 __asm__("$5") = (int) (long) (a2);     \
 409         long __vec = (long) romvec->dest;                               \
 410         __asm__ __volatile__(                                           \
 411         "dsubu\t$29, 32\n\t"                                            \
 412         "jalr\t%1\n\t"                                                  \
 413         "daddu\t$29, 32\n\t"                                            \
 414         "move\t%0, $2"                                                  \
 415         : "=r" (__res), "=r" (__vec)                                    \
 416         : "1" (__vec), "r" (__a1), "r" (__a2)                           \
 417         : __arc_clobbers, "$6","$7");                                   \
 418         __res;                                                          \
 419 })
 420
 421 #define ARC_CALL3(dest,a1,a2,a3)                                        \
 422 ({      long __res;                                                     \
 423         register signed int __a1 __asm__("$4") = (int) (long) (a1);     \
 424         register signed int __a2 __asm__("$5") = (int) (long) (a2);     \
 425         register signed int __a3 __asm__("$6") = (int) (long) (a3);     \
 426         long __vec = (long) romvec->dest;                               \
 427         __asm__ __volatile__(                                           \
 428         "dsubu\t$29, 32\n\t"                                            \
 429         "jalr\t%1\n\t"                                                  \
 430         "daddu\t$29, 32\n\t"                                            \
 431         "move\t%0, $2"                                                  \
 432         : "=r" (__res), "=r" (__vec)                                    \
 433         : "1" (__vec), "r" (__a1), "r" (__a2), "r" (__a3)               \
 434         : __arc_clobbers, "$7");                                        \
 435         __res;                                                          \
 436 })
 437
 438 #define ARC_CALL4(dest,a1,a2,a3,a4)                                     \
 439 ({      long __res;                                                     \
 440         register signed int __a1 __asm__("$4") = (int) (long) (a1);     \
 441         register signed int __a2 __asm__("$5") = (int) (long) (a2);     \
 442         register signed int __a3 __asm__("$6") = (int) (long) (a3);     \
 443         register signed int __a4 __asm__("$7") = (int) (long) (a4);     \
 444         long __vec = (long) romvec->dest;                               \
 445         __asm__ __volatile__(                                           \
 446         "dsubu\t$29, 32\n\t"                                            \
 447         "jalr\t%1\n\t"                                                  \
 448         "daddu\t$29, 32\n\t"                                            \
 449         "move\t%0, $2"                                                  \
 450         : "=r" (__res), "=r" (__vec)                                    \
 451         : "1" (__vec), "r" (__a1), "r" (__a2), "r" (__a3),              \
 452           "r" (__a4)                                                    \
 453         : __arc_clobbers);                                              \
 454         __res;                                                          \
 455 })
 456
 457 #define ARC_CALL5(dest,a1,a2,a3,a4,a5)                                  \
 458 ({      long __res;                                                     \
 459         register signed int __a1 __asm__("$4") = (int) (long) (a1);     \
 460         register signed int __a2 __asm__("$5") = (int) (long) (a2);     \
 461         register signed int __a3 __asm__("$6") = (int) (long) (a3);     \
 462         register signed int __a4 __asm__("$7") = (int) (long) (a4);     \
 463         register signed int __a5 = (a5);                                \
 464         long __vec = (long) romvec->dest;                               \
 465         __asm__ __volatile__(                                           \
 466         "dsubu\t$29, 32\n\t"                                            \
 467         "sw\t%7, 16($29)\n\t"                                           \
 468         "jalr\t%1\n\t"                                                  \
 469         "daddu\t$29, 32\n\t"                                            \
 470         "move\t%0, $2"                                                  \
 471         : "=r" (__res), "=r" (__vec)                                    \
 472         : "1" (__vec),                                                  \
 473           "r" (__a1), "r" (__a2), "r" (__a3), "r" (__a4),               \
 474           "r" (__a5)                                                    \
 475         : __arc_clobbers);                                              \
 476         __res;                                                          \
 477 })
 478
 479 #endif /* defined(CONFIG_MIPS64) && defined(CONFIG_ARC32) */
 480
 481 #if (defined(CONFIG_MIPS32) && defined(CONFIG_ARC32)) ||                \
 482     (defined(CONFIG_MIPS64) && defined(CONFIG_ARC64))
 483
 484 #define ARC_CALL0(dest)                                                 \
 485 ({      long __res;                                                     \
 486         long (*__vec)(void) = (void *) romvec->dest;                    \
 487                                                                         \
 488         __res = __vec();                                                \
 489         __res;                                                          \
 490 })
 491
 492 #define ARC_CALL1(dest,a1)                                              \
 493 ({      long __res;                                                     \
 494         long __a1 = (long) (a1);                                        \
 495         long (*__vec)(long) = (void *) romvec->dest;                    \
 496                                                                         \
 497         __res = __vec(__a1);                                            \
 498         __res;                                                          \
 499 })
 500
 501 #define ARC_CALL2(dest,a1,a2)                                           \
 502 ({      long __res;                                                     \
 503         long __a1 = (long) (a1);                                        \
 504         long __a2 = (long) (a2);                                        \
 505         long (*__vec)(long, long) = (void *) romvec->dest;              \
 506                                                                         \
 507         __res = __vec(__a1, __a2);                                      \
 508         __res;                                                          \
 509 })
 510
 511 #define ARC_CALL3(dest,a1,a2,a3)                                        \
 512 ({      long __res;                                                     \
 513         long __a1 = (long) (a1);                                        \
 514         long __a2 = (long) (a2);                                        \
 515         long __a3 = (long) (a3);                                        \
 516         long (*__vec)(long, long, long) = (void *) romvec->dest;        \
 517                                                                         \
 518         __res = __vec(__a1, __a2, __a3);                                \
 519         __res;                                                          \
 520 })
 521
 522 #define ARC_CALL4(dest,a1,a2,a3,a4)                                     \
 523 ({      long __res;                                                     \
 524         long __a1 = (long) (a1);                                        \
 525         long __a2 = (long) (a2);                                        \
 526         long __a3 = (long) (a3);                                        \
 527         long __a4 = (long) (a4);                                        \
 528         long (*__vec)(long, long, long, long) = (void *) romvec->dest;  \
 529                                                                         \
 530         __res = __vec(__a1, __a2, __a3, __a4);                          \
 531         __res;                                                          \
 532 })
 533
 534 #define ARC_CALL5(dest,a1,a2,a3,a4,a5)                                  \
 535 ({      long __res;                                                     \
 536         long __a1 = (long) (a1);                                        \
 537         long __a2 = (long) (a2);                                        \
 538         long __a3 = (long) (a3);                                        \
 539         long __a4 = (long) (a4);                                        \
 540         long __a5 = (long) (a5);                                        \
 541         long (*__vec)(long, long, long, long, long);                    \
 542         __vec = (void *) romvec->dest;                                  \
 543                                                                         \
 544         __res = __vec(__a1, __a2, __a3, __a4, __a5);                    \
 545         __res;                                                          \
 546 })
 547 #endif /* both kernel and ARC either 32-bit or 64-bit */
 548
 549 #endif /* _ASM_SGIARCS_H */