arch/mips/fw/cfe/cfe_api.c

   1 /*
   2  * Copyright (C) 2000, 2001, 2002 Broadcom Corporation
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License
   6  * as published by the Free Software Foundation; either version 2
   7  * of the License, or (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  17  */
  18
  19 /*  *********************************************************************
  20     *
  21     *  Broadcom Common Firmware Environment (CFE)
  22     *
  23     *  Device Function stubs                    File: cfe_api.c
  24     *
  25     *  This module contains device function stubs (small routines to
  26     *  call the standard "iocb" interface entry point to CFE).
  27     *  There should be one routine here per iocb function call.
  28     *
  29     *  Authors:  Mitch Lichtenberg, Chris Demetriou
  30     *
  31     ********************************************************************* */
  32
  33 #include <asm/fw/cfe/cfe_api.h>
  34 #include "cfe_api_int.h"
  35
  36 /* Cast from a native pointer to a cfe_xptr_t and back.  */
  37 #define XPTR_FROM_NATIVE(n)     ((cfe_xptr_t) (intptr_t) (n))
  38 #define NATIVE_FROM_XPTR(x)     ((void *) (intptr_t) (x))
  39
  40 #ifdef CFE_API_IMPL_NAMESPACE
  41 #define cfe_iocb_dispatch(a)            __cfe_iocb_dispatch(a)
  42 #endif
  43 int cfe_iocb_dispatch(cfe_xiocb_t * xiocb);
  44
  45 #if defined(CFE_API_common) || defined(CFE_API_ALL)
  46 /*
  47  * Declare the dispatch function with args of "intptr_t".
  48  * This makes sure whatever model we're compiling in
  49  * puts the pointers in a single register.  For example,
  50  * combining -mlong64 and -mips1 or -mips2 would lead to
  51  * trouble, since the handle and IOCB pointer will be
  52  * passed in two registers each, and CFE expects one.
  53  */
  54
  55 static int (*cfe_dispfunc) (intptr_t handle, intptr_t xiocb) = 0;
  56 static cfe_xuint_t cfe_handle = 0;
  57
  58 int cfe_init(cfe_xuint_t handle, cfe_xuint_t ept)
  59 {
  60         cfe_dispfunc = NATIVE_FROM_XPTR(ept);
  61         cfe_handle = handle;
  62         return 0;
  63 }
  64
  65 int cfe_iocb_dispatch(cfe_xiocb_t * xiocb)
  66 {
  67         if (!cfe_dispfunc)
  68                 return -1;
  69         return (*cfe_dispfunc) ((intptr_t) cfe_handle, (intptr_t) xiocb);
  70 }
  71 #endif                          /* CFE_API_common || CFE_API_ALL */
  72
  73 #if defined(CFE_API_close) || defined(CFE_API_ALL)
  74 int cfe_close(int handle)
  75 {
  76         cfe_xiocb_t xiocb;
  77
  78         xiocb.xiocb_fcode = CFE_CMD_DEV_CLOSE;
  79         xiocb.xiocb_status = 0;
  80         xiocb.xiocb_handle = handle;
  81         xiocb.xiocb_flags = 0;
  82         xiocb.xiocb_psize = 0;
  83
  84         cfe_iocb_dispatch(&xiocb);
  85
  86         return xiocb.xiocb_status;
  87
  88 }
  89 #endif                          /* CFE_API_close || CFE_API_ALL */
  90
  91 #if defined(CFE_API_cpu_start) || defined(CFE_API_ALL)
  92 int cfe_cpu_start(int cpu, void (*fn) (void), long sp, long gp, long a1)
  93 {
  94         cfe_xiocb_t xiocb;
  95
  96         xiocb.xiocb_fcode = CFE_CMD_FW_CPUCTL;
  97         xiocb.xiocb_status = 0;
  98         xiocb.xiocb_handle = 0;
  99         xiocb.xiocb_flags = 0;
 100         xiocb.xiocb_psize = sizeof(xiocb_cpuctl_t);
 101         xiocb.plist.xiocb_cpuctl.cpu_number = cpu;
 102         xiocb.plist.xiocb_cpuctl.cpu_command = CFE_CPU_CMD_START;
 103         xiocb.plist.xiocb_cpuctl.gp_val = gp;
 104         xiocb.plist.xiocb_cpuctl.sp_val = sp;
 105         xiocb.plist.xiocb_cpuctl.a1_val = a1;
 106         xiocb.plist.xiocb_cpuctl.start_addr = (long) fn;
 107
 108         cfe_iocb_dispatch(&xiocb);
 109
 110         return xiocb.xiocb_status;
 111 }
 112 #endif                          /* CFE_API_cpu_start || CFE_API_ALL */
 113
 114 #if defined(CFE_API_cpu_stop) || defined(CFE_API_ALL)
 115 int cfe_cpu_stop(int cpu)
 116 {
 117         cfe_xiocb_t xiocb;
 118
 119         xiocb.xiocb_fcode = CFE_CMD_FW_CPUCTL;
 120         xiocb.xiocb_status = 0;
 121         xiocb.xiocb_handle = 0;
 122         xiocb.xiocb_flags = 0;
 123         xiocb.xiocb_psize = sizeof(xiocb_cpuctl_t);
 124         xiocb.plist.xiocb_cpuctl.cpu_number = cpu;
 125         xiocb.plist.xiocb_cpuctl.cpu_command = CFE_CPU_CMD_STOP;
 126
 127         cfe_iocb_dispatch(&xiocb);
 128
 129         return xiocb.xiocb_status;
 130 }
 131 #endif                          /* CFE_API_cpu_stop || CFE_API_ALL */
 132
 133 #if defined(CFE_API_enumenv) || defined(CFE_API_ALL)
 134 int cfe_enumenv(int idx, char *name, int namelen, char *val, int vallen)
 135 {
 136         cfe_xiocb_t xiocb;
 137
 138         xiocb.xiocb_fcode = CFE_CMD_ENV_SET;
 139         xiocb.xiocb_status = 0;
 140         xiocb.xiocb_handle = 0;
 141         xiocb.xiocb_flags = 0;
 142         xiocb.xiocb_psize = sizeof(xiocb_envbuf_t);
 143         xiocb.plist.xiocb_envbuf.enum_idx = idx;
 144         xiocb.plist.xiocb_envbuf.name_ptr = XPTR_FROM_NATIVE(name);
 145         xiocb.plist.xiocb_envbuf.name_length = namelen;
 146         xiocb.plist.xiocb_envbuf.val_ptr = XPTR_FROM_NATIVE(val);
 147         xiocb.plist.xiocb_envbuf.val_length = vallen;
 148
 149         cfe_iocb_dispatch(&xiocb);
 150
 151         return xiocb.xiocb_status;
 152 }
 153 #endif                          /* CFE_API_enumenv || CFE_API_ALL */
 154
 155 #if defined(CFE_API_enummem) || defined(CFE_API_ALL)
 156 int
 157 cfe_enummem(int idx, int flags, cfe_xuint_t * start, cfe_xuint_t * length,
 158             cfe_xuint_t * type)
 159 {
 160         cfe_xiocb_t xiocb;
 161
 162         xiocb.xiocb_fcode = CFE_CMD_FW_MEMENUM;
 163         xiocb.xiocb_status = 0;
 164         xiocb.xiocb_handle = 0;
 165         xiocb.xiocb_flags = flags;
 166         xiocb.xiocb_psize = sizeof(xiocb_meminfo_t);
 167         xiocb.plist.xiocb_meminfo.mi_idx = idx;
 168
 169         cfe_iocb_dispatch(&xiocb);
 170
 171         if (xiocb.xiocb_status < 0)
 172                 return xiocb.xiocb_status;
 173
 174         *start = xiocb.plist.xiocb_meminfo.mi_addr;
 175         *length = xiocb.plist.xiocb_meminfo.mi_size;
 176         *type = xiocb.plist.xiocb_meminfo.mi_type;
 177
 178         return 0;
 179 }
 180 #endif                          /* CFE_API_enummem || CFE_API_ALL */
 181
 182 #if defined(CFE_API_exit) || defined(CFE_API_ALL)
 183 int cfe_exit(int warm, int status)
 184 {
 185         cfe_xiocb_t xiocb;
 186
 187         xiocb.xiocb_fcode = CFE_CMD_FW_RESTART;
 188         xiocb.xiocb_status = 0;
 189         xiocb.xiocb_handle = 0;
 190         xiocb.xiocb_flags = warm ? CFE_FLG_WARMSTART : 0;
 191         xiocb.xiocb_psize = sizeof(xiocb_exitstat_t);
 192         xiocb.plist.xiocb_exitstat.status = status;
 193
 194         cfe_iocb_dispatch(&xiocb);
 195
 196         return xiocb.xiocb_status;
 197 }
 198 #endif                          /* CFE_API_exit || CFE_API_ALL */
 199
 200 #if defined(CFE_API_flushcache) || defined(CFE_API_ALL)
 201 int cfe_flushcache(int flg)
 202 {
 203         cfe_xiocb_t xiocb;
 204
 205         xiocb.xiocb_fcode = CFE_CMD_FW_FLUSHCACHE;
 206         xiocb.xiocb_status = 0;
 207         xiocb.xiocb_handle = 0;
 208         xiocb.xiocb_flags = flg;
 209         xiocb.xiocb_psize = 0;
 210
 211         cfe_iocb_dispatch(&xiocb);
 212
 213         return xiocb.xiocb_status;
 214 }
 215 #endif                          /* CFE_API_flushcache || CFE_API_ALL */
 216
 217 #if defined(CFE_API_getdevinfo) || defined(CFE_API_ALL)
 218 int cfe_getdevinfo(char *name)
 219 {
 220         cfe_xiocb_t xiocb;
 221
 222         xiocb.xiocb_fcode = CFE_CMD_DEV_GETINFO;
 223         xiocb.xiocb_status = 0;
 224         xiocb.xiocb_handle = 0;
 225         xiocb.xiocb_flags = 0;
 226         xiocb.xiocb_psize = sizeof(xiocb_buffer_t);
 227         xiocb.plist.xiocb_buffer.buf_offset = 0;
 228         xiocb.plist.xiocb_buffer.buf_ptr = XPTR_FROM_NATIVE(name);
 229         xiocb.plist.xiocb_buffer.buf_length = cfe_strlen(name);
 230
 231         cfe_iocb_dispatch(&xiocb);
 232
 233         if (xiocb.xiocb_status < 0)
 234                 return xiocb.xiocb_status;
 235         return xiocb.plist.xiocb_buffer.buf_devflags;
 236 }
 237 #endif                          /* CFE_API_getdevinfo || CFE_API_ALL */
 238
 239 #if defined(CFE_API_getenv) || defined(CFE_API_ALL)
 240 int cfe_getenv(char *name, char *dest, int destlen)
 241 {
 242         cfe_xiocb_t xiocb;
 243
 244         *dest = 0;
 245
 246         xiocb.xiocb_fcode = CFE_CMD_ENV_GET;
 247         xiocb.xiocb_status = 0;
 248         xiocb.xiocb_handle = 0;
 249         xiocb.xiocb_flags = 0;
 250         xiocb.xiocb_psize = sizeof(xiocb_envbuf_t);
 251         xiocb.plist.xiocb_envbuf.enum_idx = 0;
 252         xiocb.plist.xiocb_envbuf.name_ptr = XPTR_FROM_NATIVE(name);
 253         xiocb.plist.xiocb_envbuf.name_length = cfe_strlen(name);
 254         xiocb.plist.xiocb_envbuf.val_ptr = XPTR_FROM_NATIVE(dest);
 255         xiocb.plist.xiocb_envbuf.val_length = destlen;
 256
 257         cfe_iocb_dispatch(&xiocb);
 258
 259         return xiocb.xiocb_status;
 260 }
 261 #endif                          /* CFE_API_getenv || CFE_API_ALL */
 262
 263 #if defined(CFE_API_getfwinfo) || defined(CFE_API_ALL)
 264 int cfe_getfwinfo(cfe_fwinfo_t * info)
 265 {
 266         cfe_xiocb_t xiocb;
 267
 268         xiocb.xiocb_fcode = CFE_CMD_FW_GETINFO;
 269         xiocb.xiocb_status = 0;
 270         xiocb.xiocb_handle = 0;
 271         xiocb.xiocb_flags = 0;
 272         xiocb.xiocb_psize = sizeof(xiocb_fwinfo_t);
 273
 274         cfe_iocb_dispatch(&xiocb);
 275
 276         if (xiocb.xiocb_status < 0)
 277                 return xiocb.xiocb_status;
 278
 279         info->fwi_version = xiocb.plist.xiocb_fwinfo.fwi_version;
 280         info->fwi_totalmem = xiocb.plist.xiocb_fwinfo.fwi_totalmem;
 281         info->fwi_flags = xiocb.plist.xiocb_fwinfo.fwi_flags;
 282         info->fwi_boardid = xiocb.plist.xiocb_fwinfo.fwi_boardid;
 283         info->fwi_bootarea_va = xiocb.plist.xiocb_fwinfo.fwi_bootarea_va;
 284         info->fwi_bootarea_pa = xiocb.plist.xiocb_fwinfo.fwi_bootarea_pa;
 285         info->fwi_bootarea_size =
 286             xiocb.plist.xiocb_fwinfo.fwi_bootarea_size;
 287 #if 0
 288         info->fwi_reserved1 = xiocb.plist.xiocb_fwinfo.fwi_reserved1;
 289         info->fwi_reserved2 = xiocb.plist.xiocb_fwinfo.fwi_reserved2;
 290         info->fwi_reserved3 = xiocb.plist.xiocb_fwinfo.fwi_reserved3;
 291 #endif
 292
 293         return 0;
 294 }
 295 #endif                          /* CFE_API_getfwinfo || CFE_API_ALL */
 296
 297 #if defined(CFE_API_getstdhandle) || defined(CFE_API_ALL)
 298 int cfe_getstdhandle(int flg)
 299 {
 300         cfe_xiocb_t xiocb;
 301
 302         xiocb.xiocb_fcode = CFE_CMD_DEV_GETHANDLE;
 303         xiocb.xiocb_status = 0;
 304         xiocb.xiocb_handle = 0;
 305         xiocb.xiocb_flags = flg;
 306         xiocb.xiocb_psize = 0;
 307
 308         cfe_iocb_dispatch(&xiocb);
 309
 310         if (xiocb.xiocb_status < 0)
 311                 return xiocb.xiocb_status;
 312         return xiocb.xiocb_handle;
 313 }
 314 #endif                          /* CFE_API_getstdhandle || CFE_API_ALL */
 315
 316 #if defined(CFE_API_getticks) || defined(CFE_API_ALL)
 317 int64_t
 318 #ifdef CFE_API_IMPL_NAMESPACE
 319 __cfe_getticks(void)
 320 #else
 321 cfe_getticks(void)
 322 #endif
 323 {
 324         cfe_xiocb_t xiocb;
 325
 326         xiocb.xiocb_fcode = CFE_CMD_FW_GETTIME;
 327         xiocb.xiocb_status = 0;
 328         xiocb.xiocb_handle = 0;
 329         xiocb.xiocb_flags = 0;
 330         xiocb.xiocb_psize = sizeof(xiocb_time_t);
 331         xiocb.plist.xiocb_time.ticks = 0;
 332
 333         cfe_iocb_dispatch(&xiocb);
 334
 335         return xiocb.plist.xiocb_time.ticks;
 336
 337 }
 338 #endif                          /* CFE_API_getticks || CFE_API_ALL */
 339
 340 #if defined(CFE_API_inpstat) || defined(CFE_API_ALL)
 341 int cfe_inpstat(int handle)
 342 {
 343         cfe_xiocb_t xiocb;
 344
 345         xiocb.xiocb_fcode = CFE_CMD_DEV_INPSTAT;
 346         xiocb.xiocb_status = 0;
 347         xiocb.xiocb_handle = handle;
 348         xiocb.xiocb_flags = 0;
 349         xiocb.xiocb_psize = sizeof(xiocb_inpstat_t);
 350         xiocb.plist.xiocb_inpstat.inp_status = 0;
 351
 352         cfe_iocb_dispatch(&xiocb);
 353
 354         if (xiocb.xiocb_status < 0)
 355                 return xiocb.xiocb_status;
 356         return xiocb.plist.xiocb_inpstat.inp_status;
 357 }
 358 #endif                          /* CFE_API_inpstat || CFE_API_ALL */
 359
 360 #if defined(CFE_API_ioctl) || defined(CFE_API_ALL)
 361 int
 362 cfe_ioctl(int handle, unsigned int ioctlnum, unsigned char *buffer,
 363           int length, int *retlen, cfe_xuint_t offset)
 364 {
 365         cfe_xiocb_t xiocb;
 366
 367         xiocb.xiocb_fcode = CFE_CMD_DEV_IOCTL;
 368         xiocb.xiocb_status = 0;
 369         xiocb.xiocb_handle = handle;
 370         xiocb.xiocb_flags = 0;
 371         xiocb.xiocb_psize = sizeof(xiocb_buffer_t);
 372         xiocb.plist.xiocb_buffer.buf_offset = offset;
 373         xiocb.plist.xiocb_buffer.buf_ioctlcmd = ioctlnum;
 374         xiocb.plist.xiocb_buffer.buf_ptr = XPTR_FROM_NATIVE(buffer);
 375         xiocb.plist.xiocb_buffer.buf_length = length;
 376
 377         cfe_iocb_dispatch(&xiocb);
 378
 379         if (retlen)
 380                 *retlen = xiocb.plist.xiocb_buffer.buf_retlen;
 381         return xiocb.xiocb_status;
 382 }
 383 #endif                          /* CFE_API_ioctl || CFE_API_ALL */
 384
 385 #if defined(CFE_API_open) || defined(CFE_API_ALL)
 386 int cfe_open(char *name)
 387 {
 388         cfe_xiocb_t xiocb;
 389
 390         xiocb.xiocb_fcode = CFE_CMD_DEV_OPEN;
 391         xiocb.xiocb_status = 0;
 392         xiocb.xiocb_handle = 0;
 393         xiocb.xiocb_flags = 0;
 394         xiocb.xiocb_psize = sizeof(xiocb_buffer_t);
 395         xiocb.plist.xiocb_buffer.buf_offset = 0;
 396         xiocb.plist.xiocb_buffer.buf_ptr = XPTR_FROM_NATIVE(name);
 397         xiocb.plist.xiocb_buffer.buf_length = cfe_strlen(name);
 398
 399         cfe_iocb_dispatch(&xiocb);
 400
 401         if (xiocb.xiocb_status < 0)
 402                 return xiocb.xiocb_status;
 403         return xiocb.xiocb_handle;
 404 }
 405 #endif                          /* CFE_API_open || CFE_API_ALL */
 406
 407 #if defined(CFE_API_read) || defined(CFE_API_ALL)
 408 int cfe_read(int handle, unsigned char *buffer, int length)
 409 {
 410         return cfe_readblk(handle, 0, buffer, length);
 411 }
 412 #endif                          /* CFE_API_read || CFE_API_ALL */
 413
 414 #if defined(CFE_API_readblk) || defined(CFE_API_ALL)
 415 int
 416 cfe_readblk(int handle, cfe_xint_t offset, unsigned char *buffer,
 417             int length)
 418 {
 419         cfe_xiocb_t xiocb;
 420
 421         xiocb.xiocb_fcode = CFE_CMD_DEV_READ;
 422         xiocb.xiocb_status = 0;
 423         xiocb.xiocb_handle = handle;
 424         xiocb.xiocb_flags = 0;
 425         xiocb.xiocb_psize = sizeof(xiocb_buffer_t);
 426         xiocb.plist.xiocb_buffer.buf_offset = offset;
 427         xiocb.plist.xiocb_buffer.buf_ptr = XPTR_FROM_NATIVE(buffer);
 428         xiocb.plist.xiocb_buffer.buf_length = length;
 429
 430         cfe_iocb_dispatch(&xiocb);
 431
 432         if (xiocb.xiocb_status < 0)
 433                 return xiocb.xiocb_status;
 434         return xiocb.plist.xiocb_buffer.buf_retlen;
 435 }
 436 #endif                          /* CFE_API_readblk || CFE_API_ALL */
 437
 438 #if defined(CFE_API_setenv) || defined(CFE_API_ALL)
 439 int cfe_setenv(char *name, char *val)
 440 {
 441         cfe_xiocb_t xiocb;
 442
 443         xiocb.xiocb_fcode = CFE_CMD_ENV_SET;
 444         xiocb.xiocb_status = 0;
 445         xiocb.xiocb_handle = 0;
 446         xiocb.xiocb_flags = 0;
 447         xiocb.xiocb_psize = sizeof(xiocb_envbuf_t);
 448         xiocb.plist.xiocb_envbuf.enum_idx = 0;
 449         xiocb.plist.xiocb_envbuf.name_ptr = XPTR_FROM_NATIVE(name);
 450         xiocb.plist.xiocb_envbuf.name_length = cfe_strlen(name);
 451         xiocb.plist.xiocb_envbuf.val_ptr = XPTR_FROM_NATIVE(val);
 452         xiocb.plist.xiocb_envbuf.val_length = cfe_strlen(val);
 453
 454         cfe_iocb_dispatch(&xiocb);
 455
 456         return xiocb.xiocb_status;
 457 }
 458 #endif                          /* CFE_API_setenv || CFE_API_ALL */
 459
 460 #if (defined(CFE_API_strlen) || defined(CFE_API_ALL)) \
 461     && !defined(CFE_API_STRLEN_CUSTOM)
 462 int cfe_strlen(char *name)
 463 {
 464         int count = 0;
 465
 466         while (*name++)
 467                 count++;
 468
 469         return count;
 470 }
 471 #endif                          /* CFE_API_strlen || CFE_API_ALL */
 472
 473 #if defined(CFE_API_write) || defined(CFE_API_ALL)
 474 int cfe_write(int handle, unsigned char *buffer, int length)
 475 {
 476         return cfe_writeblk(handle, 0, buffer, length);
 477 }
 478 #endif                          /* CFE_API_write || CFE_API_ALL */
 479
 480 #if defined(CFE_API_writeblk) || defined(CFE_API_ALL)
 481 int
 482 cfe_writeblk(int handle, cfe_xint_t offset, unsigned char *buffer,
 483              int length)
 484 {
 485         cfe_xiocb_t xiocb;
 486
 487         xiocb.xiocb_fcode = CFE_CMD_DEV_WRITE;
 488         xiocb.xiocb_status = 0;
 489         xiocb.xiocb_handle = handle;
 490         xiocb.xiocb_flags = 0;
 491         xiocb.xiocb_psize = sizeof(xiocb_buffer_t);
 492         xiocb.plist.xiocb_buffer.buf_offset = offset;
 493         xiocb.plist.xiocb_buffer.buf_ptr = XPTR_FROM_NATIVE(buffer);
 494         xiocb.plist.xiocb_buffer.buf_length = length;
 495
 496         cfe_iocb_dispatch(&xiocb);
 497
 498         if (xiocb.xiocb_status < 0)
 499                 return xiocb.xiocb_status;
 500         return xiocb.plist.xiocb_buffer.buf_retlen;
 501 }
 502 #endif                          /* CFE_API_writeblk || CFE_API_ALL */