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treewide: remove redundant IS_ERR() before error code check
[linux/fpc-iii.git] / arch / mips / include / asm / sgiarcs.h
blobe1512cab180b4c5dc8141591f796299ccd875b86
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 (davem@davemloft.net)
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/kernel.h>
16
17 #include <asm/types.h>
18 #include <asm/fw/arc/types.h>
19
20 /* Various ARCS error codes. */
21 #define PROM_ESUCCESS 0x00
22 #define PROM_E2BIG 0x01
23 #define PROM_EACCESS 0x02
24 #define PROM_EAGAIN 0x03
25 #define PROM_EBADF 0x04
26 #define PROM_EBUSY 0x05
27 #define PROM_EFAULT 0x06
28 #define PROM_EINVAL 0x07
29 #define PROM_EIO 0x08
30 #define PROM_EISDIR 0x09
31 #define PROM_EMFILE 0x0a
32 #define PROM_EMLINK 0x0b
33 #define PROM_ENAMETOOLONG 0x0c
34 #define PROM_ENODEV 0x0d
35 #define PROM_ENOENT 0x0e
36 #define PROM_ENOEXEC 0x0f
37 #define PROM_ENOMEM 0x10
38 #define PROM_ENOSPC 0x11
39 #define PROM_ENOTDIR 0x12
40 #define PROM_ENOTTY 0x13
41 #define PROM_ENXIO 0x14
42 #define PROM_EROFS 0x15
43 /* SGI ARCS specific errno's. */
44 #define PROM_EADDRNOTAVAIL 0x1f
45 #define PROM_ETIMEDOUT 0x20
46 #define PROM_ECONNABORTED 0x21
47 #define PROM_ENOCONNECT 0x22
48
49 /* Device classes, types, and identifiers for prom
50 * device inventory queries.
51 */
52 enum linux_devclass {
53 system, processor, cache, adapter, controller, peripheral, memory
54 };
55
56 enum linux_devtypes {
57 /* Generic stuff. */
58 Arc, Cpu, Fpu,
59
60 /* Primary insn and data caches. */
61 picache, pdcache,
62
63 /* Secondary insn, data, and combined caches. */
64 sicache, sdcache, sccache,
65
66 memdev, eisa_adapter, tc_adapter, scsi_adapter, dti_adapter,
67 multifunc_adapter, dsk_controller, tp_controller, cdrom_controller,
68 worm_controller, serial_controller, net_controller, disp_controller,
69 parallel_controller, ptr_controller, kbd_controller, audio_controller,
70 misc_controller, disk_peripheral, flpy_peripheral, tp_peripheral,
71 modem_peripheral, monitor_peripheral, printer_peripheral,
72 ptr_peripheral, kbd_peripheral, term_peripheral, line_peripheral,
73 net_peripheral, misc_peripheral, anon
74 };
75
76 enum linux_identifier {
77 bogus, ronly, removable, consin, consout, input, output
78 };
79
80 /* A prom device tree component. */
81 struct linux_component {
82 enum linux_devclass class; /* node class */
83 enum linux_devtypes type; /* node type */
84 enum linux_identifier iflags; /* node flags */
85 USHORT vers; /* node version */
86 USHORT rev; /* node revision */
87 ULONG key; /* completely magic */
88 ULONG amask; /* XXX affinity mask??? */
89 ULONG cdsize; /* size of configuration data */
90 ULONG ilen; /* length of string identifier */
91 _PULONG iname; /* string identifier */
92 };
93 typedef struct linux_component pcomponent;
94
95 struct linux_sysid {
96 char vend[8], prod[8];
97 };
98
99 /* ARCS prom memory descriptors. */
100 enum arcs_memtypes {
101 arcs_eblock, /* exception block */
102 arcs_rvpage, /* ARCS romvec page */
103 arcs_fcontig, /* Contiguous and free */
104 arcs_free, /* Generic free memory */
105 arcs_bmem, /* Borken memory, don't use */
106 arcs_prog, /* A loaded program resides here */
107 arcs_atmp, /* ARCS temporary storage area, wish Sparc OpenBoot told this */
108 arcs_aperm, /* ARCS permanent storage... */
109 };
110
111 /* ARC has slightly different types than ARCS */
112 enum arc_memtypes {
113 arc_eblock, /* exception block */
114 arc_rvpage, /* romvec page */
115 arc_free, /* Generic free memory */
116 arc_bmem, /* Borken memory, don't use */
117 arc_prog, /* A loaded program resides here */
118 arc_atmp, /* temporary storage area */
119 arc_aperm, /* permanent storage */
120 arc_fcontig, /* Contiguous and free */
121 };
122
123 union linux_memtypes {
124 enum arcs_memtypes arcs;
125 enum arc_memtypes arc;
126 };
127
128 struct linux_mdesc {
129 union linux_memtypes type;
130 ULONG base;
131 ULONG pages;
132 };
133
134 /* Time of day descriptor. */
135 struct linux_tinfo {
136 unsigned short yr;
137 unsigned short mnth;
138 unsigned short day;
139 unsigned short hr;
140 unsigned short min;
141 unsigned short sec;
142 unsigned short msec;
143 };
144
145 /* ARCS virtual dirents. */
146 struct linux_vdirent {
147 ULONG namelen;
148 unsigned char attr;
149 char fname[32]; /* XXX empirical, should be a define */
150 };
151
152 /* Other stuff for files. */
153 enum linux_omode {
154 rdonly, wronly, rdwr, wronly_creat, rdwr_creat,
155 wronly_ssede, rdwr_ssede, dirent, dirent_creat
156 };
157
158 enum linux_seekmode {
159 absolute, relative
160 };
161
162 enum linux_mountops {
163 media_load, media_unload
164 };
165
166 /* This prom has a bolixed design. */
167 struct linux_bigint {
168 #ifdef __MIPSEL__
169 u32 lo;
170 s32 hi;
171 #else /* !(__MIPSEL__) */
172 s32 hi;
173 u32 lo;
174 #endif
175 };
176
177 struct linux_finfo {
178 struct linux_bigint begin;
179 struct linux_bigint end;
180 struct linux_bigint cur;
181 enum linux_devtypes dtype;
182 unsigned long namelen;
183 unsigned char attr;
184 char name[32]; /* XXX empirical, should be define */
185 };
186
187 /* This describes the vector containing function pointers to the ARC
188 firmware functions. */
189 struct linux_romvec {
190 LONG load; /* Load an executable image. */
191 LONG invoke; /* Invoke a standalong image. */
192 LONG exec; /* Load and begin execution of a
193 standalone image. */
194 LONG halt; /* Halt the machine. */
195 LONG pdown; /* Power down the machine. */
196 LONG restart; /* XXX soft reset??? */
197 LONG reboot; /* Reboot the machine. */
198 LONG imode; /* Enter PROM interactive mode. */
199 LONG _unused1; /* Was ReturnFromMain(). */
200
201 /* PROM device tree interface. */
202 LONG next_component;
203 LONG child_component;
204 LONG parent_component;
205 LONG component_data;
206 LONG child_add;
207 LONG comp_del;
208 LONG component_by_path;
209
210 /* Misc. stuff. */
211 LONG cfg_save;
212 LONG get_sysid;
213
214 /* Probing for memory. */
215 LONG get_mdesc;
216 LONG _unused2; /* was Signal() */
217
218 LONG get_tinfo;
219 LONG get_rtime;
220
221 /* File type operations. */
222 LONG get_vdirent;
223 LONG open;
224 LONG close;
225 LONG read;
226 LONG get_rstatus;
227 LONG write;
228 LONG seek;
229 LONG mount;
230
231 /* Dealing with firmware environment variables. */
232 LONG get_evar;
233 LONG set_evar;
234
235 LONG get_finfo;
236 LONG set_finfo;
237
238 /* Miscellaneous. */
239 LONG cache_flush;
240 LONG TestUnicodeCharacter; /* ARC; not sure if ARCS too */
241 LONG GetDisplayStatus;
242 };
243
244 /* The SGI ARCS parameter block is in a fixed location for standalone
245 * programs to access PROM facilities easily.
246 */
247 typedef struct _SYSTEM_PARAMETER_BLOCK {
248 ULONG magic; /* magic cookie */
249 #define PROMBLOCK_MAGIC 0x53435241
250
251 ULONG len; /* length of parm block */
252 USHORT ver; /* ARCS firmware version */
253 USHORT rev; /* ARCS firmware revision */
254 _PLONG rs_block; /* Restart block. */
255 _PLONG dbg_block; /* Debug block. */
256 _PLONG gevect; /* XXX General vector??? */
257 _PLONG utlbvect; /* XXX UTLB vector??? */
258 ULONG rveclen; /* Size of romvec struct. */
259 _PVOID romvec; /* Function interface. */
260 ULONG pveclen; /* Length of private vector. */
261 _PVOID pvector; /* Private vector. */
262 ULONG adap_cnt; /* Adapter count. */
263 ULONG adap_typ0; /* First adapter type. */
264 ULONG adap_vcnt0; /* Adapter 0 vector count. */
265 _PVOID adap_vector; /* Adapter 0 vector ptr. */
266 ULONG adap_typ1; /* Second adapter type. */
267 ULONG adap_vcnt1; /* Adapter 1 vector count. */
268 _PVOID adap_vector1; /* Adapter 1 vector ptr. */
269 /* More adapter vectors go here... */
270 } SYSTEM_PARAMETER_BLOCK, *PSYSTEM_PARAMETER_BLOCK;
271
272 #define PROMBLOCK ((PSYSTEM_PARAMETER_BLOCK) (int)0xA0001000)
273 #define ROMVECTOR ((struct linux_romvec *) (long)(PROMBLOCK)->romvec)
274
275 /* Cache layout parameter block. */
276 union linux_cache_key {
277 struct param {
278 #ifdef __MIPSEL__
279 unsigned short size;
280 unsigned char lsize;
281 unsigned char bsize;
282 #else /* !(__MIPSEL__) */
283 unsigned char bsize;
284 unsigned char lsize;
285 unsigned short size;
286 #endif
287 } info;
288 unsigned long allinfo;
289 };
290
291 /* Configuration data. */
292 struct linux_cdata {
293 char *name;
294 int mlen;
295 enum linux_devtypes type;
296 };
297
298 /* Common SGI ARCS firmware file descriptors. */
299 #define SGIPROM_STDIN 0
300 #define SGIPROM_STDOUT 1
301
302 /* Common SGI ARCS firmware file types. */
303 #define SGIPROM_ROFILE 0x01 /* read-only file */
304 #define SGIPROM_HFILE 0x02 /* hidden file */
305 #define SGIPROM_SFILE 0x04 /* System file */
306 #define SGIPROM_AFILE 0x08 /* Archive file */
307 #define SGIPROM_DFILE 0x10 /* Directory file */
308 #define SGIPROM_DELFILE 0x20 /* Deleted file */
309
310 /* SGI ARCS boot record information. */
311 struct sgi_partition {
312 unsigned char flag;
313 #define SGIPART_UNUSED 0x00
314 #define SGIPART_ACTIVE 0x80
315
316 unsigned char shead, ssect, scyl; /* unused */
317 unsigned char systype; /* OS type, Irix or NT */
318 unsigned char ehead, esect, ecyl; /* unused */
319 unsigned char rsect0, rsect1, rsect2, rsect3;
320 unsigned char tsect0, tsect1, tsect2, tsect3;
321 };
322
323 #define SGIBBLOCK_MAGIC 0xaa55
324 #define SGIBBLOCK_MAXPART 0x0004
325
326 struct sgi_bootblock {
327 unsigned char _unused[446];
328 struct sgi_partition partitions[SGIBBLOCK_MAXPART];
329 unsigned short magic;
330 };
331
332 /* BIOS parameter block. */
333 struct sgi_bparm_block {
334 unsigned short bytes_sect; /* bytes per sector */
335 unsigned char sect_clust; /* sectors per cluster */
336 unsigned short sect_resv; /* reserved sectors */
337 unsigned char nfats; /* # of allocation tables */
338 unsigned short nroot_dirents; /* # of root directory entries */
339 unsigned short sect_volume; /* sectors in volume */
340 unsigned char media_type; /* media descriptor */
341 unsigned short sect_fat; /* sectors per allocation table */
342 unsigned short sect_track; /* sectors per track */
343 unsigned short nheads; /* # of heads */
344 unsigned short nhsects; /* # of hidden sectors */
345 };
346
347 struct sgi_bsector {
348 unsigned char jmpinfo[3];
349 unsigned char manuf_name[8];
350 struct sgi_bparm_block info;
351 };
352
353 /* Debugging block used with SGI symmon symbolic debugger. */
354 #define SMB_DEBUG_MAGIC 0xfeeddead
355 struct linux_smonblock {
356 unsigned long magic;
357 void (*handler)(void); /* Breakpoint routine. */
358 unsigned long dtable_base; /* Base addr of dbg table. */
359 int (*printf)(const char *fmt, ...);
360 unsigned long btable_base; /* Breakpoint table. */
361 unsigned long mpflushreqs; /* SMP cache flush request list. */
362 unsigned long ntab; /* Name table. */
363 unsigned long stab; /* Symbol table. */
364 int smax; /* Max # of symbols. */
365 };
366
367 /*
368 * Macros for calling a 32-bit ARC implementation from 64-bit code
369 */
370
371 #if defined(CONFIG_64BIT) && defined(CONFIG_FW_ARC32)
372
373 extern long call_o32(long vec, void *stack, ...);
374
375 extern u64 o32_stk[4096];
376 #define O32_STK (&o32_stk[ARRAY_SIZE(o32_stk)])
377
378 #define ARC_CALL0(dest) \
379 ({ long __res; \
380 long __vec = (long) romvec->dest; \
381 __res = call_o32(__vec, O32_STK); \
382 __res; \
383 })
384
385 #define ARC_CALL1(dest, a1) \
386 ({ long __res; \
387 int __a1 = (int) (long) (a1); \
388 long __vec = (long) romvec->dest; \
389 __res = call_o32(__vec, O32_STK, __a1); \
390 __res; \
391 })
392
393 #define ARC_CALL2(dest, a1, a2) \
394 ({ long __res; \
395 int __a1 = (int) (long) (a1); \
396 int __a2 = (int) (long) (a2); \
397 long __vec = (long) romvec->dest; \
398 __res = call_o32(__vec, O32_STK, __a1, __a2); \
399 __res; \
400 })
401
402 #define ARC_CALL3(dest, a1, a2, a3) \
403 ({ long __res; \
404 int __a1 = (int) (long) (a1); \
405 int __a2 = (int) (long) (a2); \
406 int __a3 = (int) (long) (a3); \
407 long __vec = (long) romvec->dest; \
408 __res = call_o32(__vec, O32_STK, __a1, __a2, __a3); \
409 __res; \
410 })
411
412 #define ARC_CALL4(dest, a1, a2, a3, a4) \
413 ({ long __res; \
414 int __a1 = (int) (long) (a1); \
415 int __a2 = (int) (long) (a2); \
416 int __a3 = (int) (long) (a3); \
417 int __a4 = (int) (long) (a4); \
418 long __vec = (long) romvec->dest; \
419 __res = call_o32(__vec, O32_STK, __a1, __a2, __a3, __a4); \
420 __res; \
421 })
422
423 #define ARC_CALL5(dest, a1, a2, a3, a4, a5) \
424 ({ long __res; \
425 int __a1 = (int) (long) (a1); \
426 int __a2 = (int) (long) (a2); \
427 int __a3 = (int) (long) (a3); \
428 int __a4 = (int) (long) (a4); \
429 int __a5 = (int) (long) (a5); \
430 long __vec = (long) romvec->dest; \
431 __res = call_o32(__vec, O32_STK, __a1, __a2, __a3, __a4, __a5); \
432 __res; \
433 })
434
435 #endif /* defined(CONFIG_64BIT) && defined(CONFIG_FW_ARC32) */
436
437 #if (defined(CONFIG_32BIT) && defined(CONFIG_FW_ARC32)) || \
438 (defined(CONFIG_64BIT) && defined(CONFIG_FW_ARC64))
439
440 #define ARC_CALL0(dest) \
441 ({ long __res; \
442 long (*__vec)(void) = (void *) romvec->dest; \
443 \
444 __res = __vec(); \
445 __res; \
446 })
447
448 #define ARC_CALL1(dest, a1) \
449 ({ long __res; \
450 long __a1 = (long) (a1); \
451 long (*__vec)(long) = (void *) romvec->dest; \
452 \
453 __res = __vec(__a1); \
454 __res; \
455 })
456
457 #define ARC_CALL2(dest, a1, a2) \
458 ({ long __res; \
459 long __a1 = (long) (a1); \
460 long __a2 = (long) (a2); \
461 long (*__vec)(long, long) = (void *) romvec->dest; \
462 \
463 __res = __vec(__a1, __a2); \
464 __res; \
465 })
466
467 #define ARC_CALL3(dest, a1, a2, a3) \
468 ({ long __res; \
469 long __a1 = (long) (a1); \
470 long __a2 = (long) (a2); \
471 long __a3 = (long) (a3); \
472 long (*__vec)(long, long, long) = (void *) romvec->dest; \
473 \
474 __res = __vec(__a1, __a2, __a3); \
475 __res; \
476 })
477
478 #define ARC_CALL4(dest, a1, a2, a3, a4) \
479 ({ long __res; \
480 long __a1 = (long) (a1); \
481 long __a2 = (long) (a2); \
482 long __a3 = (long) (a3); \
483 long __a4 = (long) (a4); \
484 long (*__vec)(long, long, long, long) = (void *) romvec->dest; \
485 \
486 __res = __vec(__a1, __a2, __a3, __a4); \
487 __res; \
488 })
489
490 #define ARC_CALL5(dest, a1, a2, a3, a4, a5) \
491 ({ long __res; \
492 long __a1 = (long) (a1); \
493 long __a2 = (long) (a2); \
494 long __a3 = (long) (a3); \
495 long __a4 = (long) (a4); \
496 long __a5 = (long) (a5); \
497 long (*__vec)(long, long, long, long, long); \
498 __vec = (void *) romvec->dest; \
499 \
500 __res = __vec(__a1, __a2, __a3, __a4, __a5); \
501 __res; \
502 })
503 #endif /* both kernel and ARC either 32-bit or 64-bit */
504
505 #endif /* _ASM_SGIARCS_H */
Linux with added FPC-III support