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c4ca3d5a ORL |
1 | /* |
2 | * dbll.c | |
3 | * | |
4 | * DSP-BIOS Bridge driver support functions for TI OMAP processors. | |
5 | * | |
6 | * Copyright (C) 2005-2006 Texas Instruments, Inc. | |
7 | * | |
8 | * This package is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License version 2 as | |
10 | * published by the Free Software Foundation. | |
11 | * | |
12 | * THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR | |
13 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED | |
14 | * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. | |
15 | */ | |
2094f12d | 16 | #include <linux/types.h> |
c4ca3d5a ORL |
17 | |
18 | /* ----------------------------------- Host OS */ | |
19 | #include <dspbridge/host_os.h> | |
20 | ||
21 | /* ----------------------------------- DSP/BIOS Bridge */ | |
c4ca3d5a ORL |
22 | #include <dspbridge/dbdefs.h> |
23 | ||
24 | /* ----------------------------------- Trace & Debug */ | |
25 | #include <dspbridge/dbc.h> | |
26 | #include <dspbridge/gh.h> | |
27 | ||
28 | /* ----------------------------------- OS Adaptation Layer */ | |
29 | ||
30 | /* Dynamic loader library interface */ | |
31 | #include <dspbridge/dynamic_loader.h> | |
32 | #include <dspbridge/getsection.h> | |
33 | ||
34 | /* ----------------------------------- This */ | |
35 | #include <dspbridge/dbll.h> | |
36 | #include <dspbridge/rmm.h> | |
37 | ||
38 | /* Number of buckets for symbol hash table */ | |
39 | #define MAXBUCKETS 211 | |
40 | ||
41 | /* Max buffer length */ | |
42 | #define MAXEXPR 128 | |
43 | ||
803cd75e | 44 | #define DOFF_ALIGN(x) (((x) + 3) & ~3UL) |
c4ca3d5a ORL |
45 | |
46 | /* | |
47 | * ======== struct dbll_tar_obj* ======== | |
48 | * A target may have one or more libraries of symbols/code/data loaded | |
49 | * onto it, where a library is simply the symbols/code/data contained | |
50 | * in a DOFF file. | |
51 | */ | |
52 | /* | |
53 | * ======== dbll_tar_obj ======== | |
54 | */ | |
55 | struct dbll_tar_obj { | |
56 | struct dbll_attrs attrs; | |
57 | struct dbll_library_obj *head; /* List of all opened libraries */ | |
58 | }; | |
59 | ||
60 | /* | |
61 | * The following 4 typedefs are "super classes" of the dynamic loader | |
62 | * library types used in dynamic loader functions (dynamic_loader.h). | |
63 | */ | |
64 | /* | |
65 | * ======== dbll_stream ======== | |
66 | * Contains dynamic_loader_stream | |
67 | */ | |
68 | struct dbll_stream { | |
69 | struct dynamic_loader_stream dl_stream; | |
70 | struct dbll_library_obj *lib; | |
71 | }; | |
72 | ||
73 | /* | |
74 | * ======== ldr_symbol ======== | |
75 | */ | |
76 | struct ldr_symbol { | |
77 | struct dynamic_loader_sym dl_symbol; | |
78 | struct dbll_library_obj *lib; | |
79 | }; | |
80 | ||
81 | /* | |
82 | * ======== dbll_alloc ======== | |
83 | */ | |
84 | struct dbll_alloc { | |
85 | struct dynamic_loader_allocate dl_alloc; | |
86 | struct dbll_library_obj *lib; | |
87 | }; | |
88 | ||
89 | /* | |
90 | * ======== dbll_init_obj ======== | |
91 | */ | |
92 | struct dbll_init_obj { | |
93 | struct dynamic_loader_initialize dl_init; | |
94 | struct dbll_library_obj *lib; | |
95 | }; | |
96 | ||
97 | /* | |
98 | * ======== DBLL_Library ======== | |
99 | * A library handle is returned by DBLL_Open() and is passed to dbll_load() | |
100 | * to load symbols/code/data, and to dbll_unload(), to remove the | |
101 | * symbols/code/data loaded by dbll_load(). | |
102 | */ | |
103 | ||
104 | /* | |
105 | * ======== dbll_library_obj ======== | |
106 | */ | |
107 | struct dbll_library_obj { | |
108 | struct dbll_library_obj *next; /* Next library in target's list */ | |
109 | struct dbll_library_obj *prev; /* Previous in the list */ | |
110 | struct dbll_tar_obj *target_obj; /* target for this library */ | |
111 | ||
112 | /* Objects needed by dynamic loader */ | |
113 | struct dbll_stream stream; | |
114 | struct ldr_symbol symbol; | |
115 | struct dbll_alloc allocate; | |
116 | struct dbll_init_obj init; | |
117 | void *dload_mod_obj; | |
118 | ||
119 | char *file_name; /* COFF file name */ | |
120 | void *fp; /* Opaque file handle */ | |
121 | u32 entry; /* Entry point */ | |
122 | void *desc; /* desc of DOFF file loaded */ | |
123 | u32 open_ref; /* Number of times opened */ | |
124 | u32 load_ref; /* Number of times loaded */ | |
125 | struct gh_t_hash_tab *sym_tab; /* Hash table of symbols */ | |
126 | u32 ul_pos; | |
127 | }; | |
128 | ||
129 | /* | |
130 | * ======== dbll_symbol ======== | |
131 | */ | |
132 | struct dbll_symbol { | |
133 | struct dbll_sym_val value; | |
134 | char *name; | |
135 | }; | |
136 | ||
137 | static void dof_close(struct dbll_library_obj *zl_lib); | |
138 | static int dof_open(struct dbll_library_obj *zl_lib); | |
139 | static s32 no_op(struct dynamic_loader_initialize *thisptr, void *bufr, | |
c8c1ad8c RS |
140 | ldr_addr locn, struct ldr_section_info *info, |
141 | unsigned bytsize); | |
c4ca3d5a ORL |
142 | |
143 | /* | |
144 | * Functions called by dynamic loader | |
145 | * | |
146 | */ | |
147 | /* dynamic_loader_stream */ | |
148 | static int dbll_read_buffer(struct dynamic_loader_stream *this, void *buffer, | |
149 | unsigned bufsize); | |
150 | static int dbll_set_file_posn(struct dynamic_loader_stream *this, | |
151 | unsigned int pos); | |
152 | /* dynamic_loader_sym */ | |
153 | static struct dynload_symbol *dbll_find_symbol(struct dynamic_loader_sym *this, | |
154 | const char *name); | |
155 | static struct dynload_symbol *dbll_add_to_symbol_table(struct dynamic_loader_sym | |
156 | *this, const char *name, | |
95870a88 | 157 | unsigned module_id); |
c4ca3d5a ORL |
158 | static struct dynload_symbol *find_in_symbol_table(struct dynamic_loader_sym |
159 | *this, const char *name, | |
160 | unsigned moduleid); | |
161 | static void dbll_purge_symbol_table(struct dynamic_loader_sym *this, | |
95870a88 | 162 | unsigned module_id); |
c4ca3d5a | 163 | static void *allocate(struct dynamic_loader_sym *this, unsigned memsize); |
95870a88 | 164 | static void deallocate(struct dynamic_loader_sym *this, void *mem_ptr); |
c4ca3d5a ORL |
165 | static void dbll_err_report(struct dynamic_loader_sym *this, const char *errstr, |
166 | va_list args); | |
167 | /* dynamic_loader_allocate */ | |
168 | static int dbll_rmm_alloc(struct dynamic_loader_allocate *this, | |
169 | struct ldr_section_info *info, unsigned align); | |
170 | static void rmm_dealloc(struct dynamic_loader_allocate *this, | |
171 | struct ldr_section_info *info); | |
172 | ||
173 | /* dynamic_loader_initialize */ | |
174 | static int connect(struct dynamic_loader_initialize *this); | |
175 | static int read_mem(struct dynamic_loader_initialize *this, void *buf, | |
176 | ldr_addr addr, struct ldr_section_info *info, | |
c8c1ad8c | 177 | unsigned bytes); |
c4ca3d5a ORL |
178 | static int write_mem(struct dynamic_loader_initialize *this, void *buf, |
179 | ldr_addr addr, struct ldr_section_info *info, | |
180 | unsigned nbytes); | |
181 | static int fill_mem(struct dynamic_loader_initialize *this, ldr_addr addr, | |
c8c1ad8c | 182 | struct ldr_section_info *info, unsigned bytes, |
c4ca3d5a ORL |
183 | unsigned val); |
184 | static int execute(struct dynamic_loader_initialize *this, ldr_addr start); | |
185 | static void release(struct dynamic_loader_initialize *this); | |
186 | ||
187 | /* symbol table hash functions */ | |
c8c1ad8c RS |
188 | static u16 name_hash(void *key, u16 max_bucket); |
189 | static bool name_match(void *key, void *sp); | |
190 | static void sym_delete(void *value); | |
c4ca3d5a ORL |
191 | |
192 | static u32 refs; /* module reference count */ | |
193 | ||
194 | /* Symbol Redefinition */ | |
195 | static int redefined_symbol; | |
196 | static int gbl_search = 1; | |
197 | ||
198 | /* | |
199 | * ======== dbll_close ======== | |
200 | */ | |
201 | void dbll_close(struct dbll_library_obj *zl_lib) | |
202 | { | |
203 | struct dbll_tar_obj *zl_target; | |
204 | ||
205 | DBC_REQUIRE(refs > 0); | |
206 | DBC_REQUIRE(zl_lib); | |
207 | DBC_REQUIRE(zl_lib->open_ref > 0); | |
208 | zl_target = zl_lib->target_obj; | |
209 | zl_lib->open_ref--; | |
210 | if (zl_lib->open_ref == 0) { | |
211 | /* Remove library from list */ | |
212 | if (zl_target->head == zl_lib) | |
213 | zl_target->head = zl_lib->next; | |
214 | ||
215 | if (zl_lib->prev) | |
216 | (zl_lib->prev)->next = zl_lib->next; | |
217 | ||
218 | if (zl_lib->next) | |
219 | (zl_lib->next)->prev = zl_lib->prev; | |
220 | ||
221 | /* Free DOF resources */ | |
222 | dof_close(zl_lib); | |
223 | kfree(zl_lib->file_name); | |
224 | ||
225 | /* remove symbols from symbol table */ | |
226 | if (zl_lib->sym_tab) | |
227 | gh_delete(zl_lib->sym_tab); | |
228 | ||
229 | /* remove the library object itself */ | |
230 | kfree(zl_lib); | |
231 | zl_lib = NULL; | |
232 | } | |
233 | } | |
234 | ||
235 | /* | |
236 | * ======== dbll_create ======== | |
237 | */ | |
238 | int dbll_create(struct dbll_tar_obj **target_obj, | |
239 | struct dbll_attrs *pattrs) | |
240 | { | |
241 | struct dbll_tar_obj *pzl_target; | |
242 | int status = 0; | |
243 | ||
244 | DBC_REQUIRE(refs > 0); | |
245 | DBC_REQUIRE(pattrs != NULL); | |
246 | DBC_REQUIRE(target_obj != NULL); | |
247 | ||
248 | /* Allocate DBL target object */ | |
249 | pzl_target = kzalloc(sizeof(struct dbll_tar_obj), GFP_KERNEL); | |
250 | if (target_obj != NULL) { | |
251 | if (pzl_target == NULL) { | |
252 | *target_obj = NULL; | |
253 | status = -ENOMEM; | |
254 | } else { | |
255 | pzl_target->attrs = *pattrs; | |
256 | *target_obj = (struct dbll_tar_obj *)pzl_target; | |
257 | } | |
157990f0 | 258 | DBC_ENSURE((!status && *target_obj) || |
51d5e099 | 259 | (status && *target_obj == NULL)); |
c4ca3d5a ORL |
260 | } |
261 | ||
262 | return status; | |
263 | } | |
264 | ||
265 | /* | |
266 | * ======== dbll_delete ======== | |
267 | */ | |
268 | void dbll_delete(struct dbll_tar_obj *target) | |
269 | { | |
270 | struct dbll_tar_obj *zl_target = (struct dbll_tar_obj *)target; | |
271 | ||
272 | DBC_REQUIRE(refs > 0); | |
273 | DBC_REQUIRE(zl_target); | |
274 | ||
275 | if (zl_target != NULL) | |
276 | kfree(zl_target); | |
277 | ||
278 | } | |
279 | ||
280 | /* | |
281 | * ======== dbll_exit ======== | |
282 | * Discontinue usage of DBL module. | |
283 | */ | |
284 | void dbll_exit(void) | |
285 | { | |
286 | DBC_REQUIRE(refs > 0); | |
287 | ||
288 | refs--; | |
289 | ||
290 | if (refs == 0) | |
291 | gh_exit(); | |
292 | ||
293 | DBC_ENSURE(refs >= 0); | |
294 | } | |
295 | ||
296 | /* | |
297 | * ======== dbll_get_addr ======== | |
298 | * Get address of name in the specified library. | |
299 | */ | |
300 | bool dbll_get_addr(struct dbll_library_obj *zl_lib, char *name, | |
13b18c29 | 301 | struct dbll_sym_val **sym_val) |
c4ca3d5a ORL |
302 | { |
303 | struct dbll_symbol *sym; | |
304 | bool status = false; | |
305 | ||
306 | DBC_REQUIRE(refs > 0); | |
307 | DBC_REQUIRE(zl_lib); | |
308 | DBC_REQUIRE(name != NULL); | |
13b18c29 | 309 | DBC_REQUIRE(sym_val != NULL); |
c4ca3d5a ORL |
310 | DBC_REQUIRE(zl_lib->sym_tab != NULL); |
311 | ||
312 | sym = (struct dbll_symbol *)gh_find(zl_lib->sym_tab, name); | |
313 | if (sym != NULL) { | |
13b18c29 | 314 | *sym_val = &sym->value; |
c4ca3d5a ORL |
315 | status = true; |
316 | } | |
317 | ||
318 | dev_dbg(bridge, "%s: lib: %p name: %s paddr: %p, status 0x%x\n", | |
13b18c29 | 319 | __func__, zl_lib, name, sym_val, status); |
c4ca3d5a ORL |
320 | return status; |
321 | } | |
322 | ||
323 | /* | |
324 | * ======== dbll_get_attrs ======== | |
325 | * Retrieve the attributes of the target. | |
326 | */ | |
327 | void dbll_get_attrs(struct dbll_tar_obj *target, struct dbll_attrs *pattrs) | |
328 | { | |
329 | struct dbll_tar_obj *zl_target = (struct dbll_tar_obj *)target; | |
330 | ||
331 | DBC_REQUIRE(refs > 0); | |
332 | DBC_REQUIRE(zl_target); | |
333 | DBC_REQUIRE(pattrs != NULL); | |
334 | ||
335 | if ((pattrs != NULL) && (zl_target != NULL)) | |
336 | *pattrs = zl_target->attrs; | |
337 | ||
338 | } | |
339 | ||
340 | /* | |
341 | * ======== dbll_get_c_addr ======== | |
342 | * Get address of a "C" name in the specified library. | |
343 | */ | |
344 | bool dbll_get_c_addr(struct dbll_library_obj *zl_lib, char *name, | |
13b18c29 | 345 | struct dbll_sym_val **sym_val) |
c4ca3d5a ORL |
346 | { |
347 | struct dbll_symbol *sym; | |
348 | char cname[MAXEXPR + 1]; | |
349 | bool status = false; | |
350 | ||
351 | DBC_REQUIRE(refs > 0); | |
352 | DBC_REQUIRE(zl_lib); | |
13b18c29 | 353 | DBC_REQUIRE(sym_val != NULL); |
c4ca3d5a ORL |
354 | DBC_REQUIRE(zl_lib->sym_tab != NULL); |
355 | DBC_REQUIRE(name != NULL); | |
356 | ||
357 | cname[0] = '_'; | |
358 | ||
359 | strncpy(cname + 1, name, sizeof(cname) - 2); | |
360 | cname[MAXEXPR] = '\0'; /* insure '\0' string termination */ | |
361 | ||
362 | /* Check for C name, if not found */ | |
363 | sym = (struct dbll_symbol *)gh_find(zl_lib->sym_tab, cname); | |
364 | ||
365 | if (sym != NULL) { | |
13b18c29 | 366 | *sym_val = &sym->value; |
c4ca3d5a ORL |
367 | status = true; |
368 | } | |
369 | ||
370 | return status; | |
371 | } | |
372 | ||
373 | /* | |
374 | * ======== dbll_get_sect ======== | |
375 | * Get the base address and size (in bytes) of a COFF section. | |
376 | */ | |
377 | int dbll_get_sect(struct dbll_library_obj *lib, char *name, u32 *paddr, | |
378 | u32 *psize) | |
379 | { | |
380 | u32 byte_size; | |
381 | bool opened_doff = false; | |
382 | const struct ldr_section_info *sect = NULL; | |
383 | struct dbll_library_obj *zl_lib = (struct dbll_library_obj *)lib; | |
384 | int status = 0; | |
385 | ||
386 | DBC_REQUIRE(refs > 0); | |
387 | DBC_REQUIRE(name != NULL); | |
388 | DBC_REQUIRE(paddr != NULL); | |
389 | DBC_REQUIRE(psize != NULL); | |
390 | DBC_REQUIRE(zl_lib); | |
391 | ||
392 | /* If DOFF file is not open, we open it. */ | |
393 | if (zl_lib != NULL) { | |
394 | if (zl_lib->fp == NULL) { | |
395 | status = dof_open(zl_lib); | |
157990f0 | 396 | if (!status) |
c4ca3d5a ORL |
397 | opened_doff = true; |
398 | ||
399 | } else { | |
400 | (*(zl_lib->target_obj->attrs.fseek)) (zl_lib->fp, | |
401 | zl_lib->ul_pos, | |
402 | SEEK_SET); | |
403 | } | |
404 | } else { | |
405 | status = -EFAULT; | |
406 | } | |
157990f0 | 407 | if (!status) { |
c4ca3d5a ORL |
408 | byte_size = 1; |
409 | if (dload_get_section_info(zl_lib->desc, name, §)) { | |
410 | *paddr = sect->load_addr; | |
411 | *psize = sect->size * byte_size; | |
412 | /* Make sure size is even for good swap */ | |
413 | if (*psize % 2) | |
414 | (*psize)++; | |
415 | ||
416 | /* Align size */ | |
417 | *psize = DOFF_ALIGN(*psize); | |
418 | } else { | |
419 | status = -ENXIO; | |
420 | } | |
421 | } | |
422 | if (opened_doff) { | |
423 | dof_close(zl_lib); | |
424 | opened_doff = false; | |
425 | } | |
426 | ||
427 | dev_dbg(bridge, "%s: lib: %p name: %s paddr: %p psize: %p, " | |
428 | "status 0x%x\n", __func__, lib, name, paddr, psize, status); | |
429 | ||
430 | return status; | |
431 | } | |
432 | ||
433 | /* | |
434 | * ======== dbll_init ======== | |
435 | */ | |
436 | bool dbll_init(void) | |
437 | { | |
438 | DBC_REQUIRE(refs >= 0); | |
439 | ||
440 | if (refs == 0) | |
441 | gh_init(); | |
442 | ||
443 | refs++; | |
444 | ||
445 | return true; | |
446 | } | |
447 | ||
448 | /* | |
449 | * ======== dbll_load ======== | |
450 | */ | |
451 | int dbll_load(struct dbll_library_obj *lib, dbll_flags flags, | |
a5120278 | 452 | struct dbll_attrs *attrs, u32 *entry) |
c4ca3d5a ORL |
453 | { |
454 | struct dbll_library_obj *zl_lib = (struct dbll_library_obj *)lib; | |
455 | struct dbll_tar_obj *dbzl; | |
456 | bool got_symbols = true; | |
457 | s32 err; | |
458 | int status = 0; | |
459 | bool opened_doff = false; | |
460 | DBC_REQUIRE(refs > 0); | |
461 | DBC_REQUIRE(zl_lib); | |
a5120278 | 462 | DBC_REQUIRE(entry != NULL); |
c4ca3d5a ORL |
463 | DBC_REQUIRE(attrs != NULL); |
464 | ||
465 | /* | |
466 | * Load if not already loaded. | |
467 | */ | |
468 | if (zl_lib->load_ref == 0 || !(flags & DBLL_DYNAMIC)) { | |
469 | dbzl = zl_lib->target_obj; | |
470 | dbzl->attrs = *attrs; | |
471 | /* Create a hash table for symbols if not already created */ | |
472 | if (zl_lib->sym_tab == NULL) { | |
473 | got_symbols = false; | |
474 | zl_lib->sym_tab = gh_create(MAXBUCKETS, | |
475 | sizeof(struct dbll_symbol), | |
476 | name_hash, | |
477 | name_match, sym_delete); | |
478 | if (zl_lib->sym_tab == NULL) | |
479 | status = -ENOMEM; | |
480 | ||
481 | } | |
482 | /* | |
483 | * Set up objects needed by the dynamic loader | |
484 | */ | |
485 | /* Stream */ | |
486 | zl_lib->stream.dl_stream.read_buffer = dbll_read_buffer; | |
487 | zl_lib->stream.dl_stream.set_file_posn = dbll_set_file_posn; | |
488 | zl_lib->stream.lib = zl_lib; | |
489 | /* Symbol */ | |
490 | zl_lib->symbol.dl_symbol.find_matching_symbol = | |
491 | dbll_find_symbol; | |
492 | if (got_symbols) { | |
493 | zl_lib->symbol.dl_symbol.add_to_symbol_table = | |
494 | find_in_symbol_table; | |
495 | } else { | |
496 | zl_lib->symbol.dl_symbol.add_to_symbol_table = | |
497 | dbll_add_to_symbol_table; | |
498 | } | |
499 | zl_lib->symbol.dl_symbol.purge_symbol_table = | |
500 | dbll_purge_symbol_table; | |
501 | zl_lib->symbol.dl_symbol.dload_allocate = allocate; | |
502 | zl_lib->symbol.dl_symbol.dload_deallocate = deallocate; | |
503 | zl_lib->symbol.dl_symbol.error_report = dbll_err_report; | |
504 | zl_lib->symbol.lib = zl_lib; | |
505 | /* Allocate */ | |
506 | zl_lib->allocate.dl_alloc.dload_allocate = dbll_rmm_alloc; | |
507 | zl_lib->allocate.dl_alloc.dload_deallocate = rmm_dealloc; | |
508 | zl_lib->allocate.lib = zl_lib; | |
509 | /* Init */ | |
510 | zl_lib->init.dl_init.connect = connect; | |
511 | zl_lib->init.dl_init.readmem = read_mem; | |
512 | zl_lib->init.dl_init.writemem = write_mem; | |
513 | zl_lib->init.dl_init.fillmem = fill_mem; | |
514 | zl_lib->init.dl_init.execute = execute; | |
515 | zl_lib->init.dl_init.release = release; | |
516 | zl_lib->init.lib = zl_lib; | |
517 | /* If COFF file is not open, we open it. */ | |
518 | if (zl_lib->fp == NULL) { | |
519 | status = dof_open(zl_lib); | |
157990f0 | 520 | if (!status) |
c4ca3d5a ORL |
521 | opened_doff = true; |
522 | ||
523 | } | |
157990f0 | 524 | if (!status) { |
c4ca3d5a ORL |
525 | zl_lib->ul_pos = (*(zl_lib->target_obj->attrs.ftell)) |
526 | (zl_lib->fp); | |
527 | /* Reset file cursor */ | |
528 | (*(zl_lib->target_obj->attrs.fseek)) (zl_lib->fp, | |
529 | (long)0, | |
530 | SEEK_SET); | |
531 | symbols_reloaded = true; | |
532 | /* The 5th argument, DLOAD_INITBSS, tells the DLL | |
533 | * module to zero-init all BSS sections. In general, | |
534 | * this is not necessary and also increases load time. | |
535 | * We may want to make this configurable by the user */ | |
536 | err = dynamic_load_module(&zl_lib->stream.dl_stream, | |
537 | &zl_lib->symbol.dl_symbol, | |
538 | &zl_lib->allocate.dl_alloc, | |
539 | &zl_lib->init.dl_init, | |
540 | DLOAD_INITBSS, | |
541 | &zl_lib->dload_mod_obj); | |
542 | ||
543 | if (err != 0) { | |
544 | status = -EILSEQ; | |
545 | } else if (redefined_symbol) { | |
546 | zl_lib->load_ref++; | |
547 | dbll_unload(zl_lib, (struct dbll_attrs *)attrs); | |
548 | redefined_symbol = false; | |
549 | status = -EILSEQ; | |
550 | } else { | |
a5120278 | 551 | *entry = zl_lib->entry; |
c4ca3d5a ORL |
552 | } |
553 | } | |
554 | } | |
157990f0 | 555 | if (!status) |
c4ca3d5a ORL |
556 | zl_lib->load_ref++; |
557 | ||
558 | /* Clean up DOFF resources */ | |
559 | if (opened_doff) | |
560 | dof_close(zl_lib); | |
561 | ||
51d5e099 | 562 | DBC_ENSURE(status || zl_lib->load_ref > 0); |
c4ca3d5a | 563 | |
a5120278 RS |
564 | dev_dbg(bridge, "%s: lib: %p flags: 0x%x entry: %p, status 0x%x\n", |
565 | __func__, lib, flags, entry, status); | |
c4ca3d5a ORL |
566 | |
567 | return status; | |
568 | } | |
569 | ||
570 | /* | |
571 | * ======== dbll_load_sect ======== | |
572 | * Not supported for COFF. | |
573 | */ | |
318b5df9 | 574 | int dbll_load_sect(struct dbll_library_obj *zl_lib, char *sec_name, |
c4ca3d5a ORL |
575 | struct dbll_attrs *attrs) |
576 | { | |
577 | DBC_REQUIRE(zl_lib); | |
578 | ||
579 | return -ENOSYS; | |
580 | } | |
581 | ||
582 | /* | |
583 | * ======== dbll_open ======== | |
584 | */ | |
585 | int dbll_open(struct dbll_tar_obj *target, char *file, dbll_flags flags, | |
daa89e6c | 586 | struct dbll_library_obj **lib_obj) |
c4ca3d5a ORL |
587 | { |
588 | struct dbll_tar_obj *zl_target = (struct dbll_tar_obj *)target; | |
589 | struct dbll_library_obj *zl_lib = NULL; | |
590 | s32 err; | |
591 | int status = 0; | |
592 | ||
593 | DBC_REQUIRE(refs > 0); | |
594 | DBC_REQUIRE(zl_target); | |
595 | DBC_REQUIRE(zl_target->attrs.fopen != NULL); | |
596 | DBC_REQUIRE(file != NULL); | |
daa89e6c | 597 | DBC_REQUIRE(lib_obj != NULL); |
c4ca3d5a ORL |
598 | |
599 | zl_lib = zl_target->head; | |
600 | while (zl_lib != NULL) { | |
601 | if (strcmp(zl_lib->file_name, file) == 0) { | |
602 | /* Library is already opened */ | |
603 | zl_lib->open_ref++; | |
604 | break; | |
605 | } | |
606 | zl_lib = zl_lib->next; | |
607 | } | |
608 | if (zl_lib == NULL) { | |
609 | /* Allocate DBL library object */ | |
610 | zl_lib = kzalloc(sizeof(struct dbll_library_obj), GFP_KERNEL); | |
611 | if (zl_lib == NULL) { | |
612 | status = -ENOMEM; | |
613 | } else { | |
614 | zl_lib->ul_pos = 0; | |
615 | /* Increment ref count to allow close on failure | |
616 | * later on */ | |
617 | zl_lib->open_ref++; | |
618 | zl_lib->target_obj = zl_target; | |
619 | /* Keep a copy of the file name */ | |
620 | zl_lib->file_name = kzalloc(strlen(file) + 1, | |
621 | GFP_KERNEL); | |
622 | if (zl_lib->file_name == NULL) { | |
623 | status = -ENOMEM; | |
624 | } else { | |
625 | strncpy(zl_lib->file_name, file, | |
626 | strlen(file) + 1); | |
627 | } | |
628 | zl_lib->sym_tab = NULL; | |
629 | } | |
630 | } | |
631 | /* | |
632 | * Set up objects needed by the dynamic loader | |
633 | */ | |
51d5e099 | 634 | if (status) |
c4ca3d5a ORL |
635 | goto func_cont; |
636 | ||
637 | /* Stream */ | |
638 | zl_lib->stream.dl_stream.read_buffer = dbll_read_buffer; | |
639 | zl_lib->stream.dl_stream.set_file_posn = dbll_set_file_posn; | |
640 | zl_lib->stream.lib = zl_lib; | |
641 | /* Symbol */ | |
642 | zl_lib->symbol.dl_symbol.add_to_symbol_table = dbll_add_to_symbol_table; | |
643 | zl_lib->symbol.dl_symbol.find_matching_symbol = dbll_find_symbol; | |
644 | zl_lib->symbol.dl_symbol.purge_symbol_table = dbll_purge_symbol_table; | |
645 | zl_lib->symbol.dl_symbol.dload_allocate = allocate; | |
646 | zl_lib->symbol.dl_symbol.dload_deallocate = deallocate; | |
647 | zl_lib->symbol.dl_symbol.error_report = dbll_err_report; | |
648 | zl_lib->symbol.lib = zl_lib; | |
649 | /* Allocate */ | |
650 | zl_lib->allocate.dl_alloc.dload_allocate = dbll_rmm_alloc; | |
651 | zl_lib->allocate.dl_alloc.dload_deallocate = rmm_dealloc; | |
652 | zl_lib->allocate.lib = zl_lib; | |
653 | /* Init */ | |
654 | zl_lib->init.dl_init.connect = connect; | |
655 | zl_lib->init.dl_init.readmem = read_mem; | |
656 | zl_lib->init.dl_init.writemem = write_mem; | |
657 | zl_lib->init.dl_init.fillmem = fill_mem; | |
658 | zl_lib->init.dl_init.execute = execute; | |
659 | zl_lib->init.dl_init.release = release; | |
660 | zl_lib->init.lib = zl_lib; | |
157990f0 | 661 | if (!status && zl_lib->fp == NULL) |
c4ca3d5a ORL |
662 | status = dof_open(zl_lib); |
663 | ||
664 | zl_lib->ul_pos = (*(zl_lib->target_obj->attrs.ftell)) (zl_lib->fp); | |
665 | (*(zl_lib->target_obj->attrs.fseek)) (zl_lib->fp, (long)0, SEEK_SET); | |
666 | /* Create a hash table for symbols if flag is set */ | |
667 | if (zl_lib->sym_tab != NULL || !(flags & DBLL_SYMB)) | |
668 | goto func_cont; | |
669 | ||
670 | zl_lib->sym_tab = | |
671 | gh_create(MAXBUCKETS, sizeof(struct dbll_symbol), name_hash, | |
672 | name_match, sym_delete); | |
673 | if (zl_lib->sym_tab == NULL) { | |
674 | status = -ENOMEM; | |
675 | } else { | |
676 | /* Do a fake load to get symbols - set write func to no_op */ | |
677 | zl_lib->init.dl_init.writemem = no_op; | |
678 | err = dynamic_open_module(&zl_lib->stream.dl_stream, | |
679 | &zl_lib->symbol.dl_symbol, | |
680 | &zl_lib->allocate.dl_alloc, | |
681 | &zl_lib->init.dl_init, 0, | |
682 | &zl_lib->dload_mod_obj); | |
683 | if (err != 0) { | |
684 | status = -EILSEQ; | |
685 | } else { | |
686 | /* Now that we have the symbol table, we can unload */ | |
687 | err = dynamic_unload_module(zl_lib->dload_mod_obj, | |
688 | &zl_lib->symbol.dl_symbol, | |
689 | &zl_lib->allocate.dl_alloc, | |
690 | &zl_lib->init.dl_init); | |
691 | if (err != 0) | |
692 | status = -EILSEQ; | |
693 | ||
694 | zl_lib->dload_mod_obj = NULL; | |
695 | } | |
696 | } | |
697 | func_cont: | |
157990f0 | 698 | if (!status) { |
c4ca3d5a ORL |
699 | if (zl_lib->open_ref == 1) { |
700 | /* First time opened - insert in list */ | |
701 | if (zl_target->head) | |
702 | (zl_target->head)->prev = zl_lib; | |
703 | ||
704 | zl_lib->prev = NULL; | |
705 | zl_lib->next = zl_target->head; | |
706 | zl_target->head = zl_lib; | |
707 | } | |
daa89e6c | 708 | *lib_obj = (struct dbll_library_obj *)zl_lib; |
c4ca3d5a | 709 | } else { |
daa89e6c | 710 | *lib_obj = NULL; |
c4ca3d5a ORL |
711 | if (zl_lib != NULL) |
712 | dbll_close((struct dbll_library_obj *)zl_lib); | |
713 | ||
714 | } | |
157990f0 | 715 | DBC_ENSURE((!status && (zl_lib->open_ref > 0) && *lib_obj) |
51d5e099 | 716 | || (status && *lib_obj == NULL)); |
c4ca3d5a | 717 | |
daa89e6c RS |
718 | dev_dbg(bridge, "%s: target: %p file: %s lib_obj: %p, status 0x%x\n", |
719 | __func__, target, file, lib_obj, status); | |
c4ca3d5a ORL |
720 | |
721 | return status; | |
722 | } | |
723 | ||
724 | /* | |
725 | * ======== dbll_read_sect ======== | |
726 | * Get the content of a COFF section. | |
727 | */ | |
728 | int dbll_read_sect(struct dbll_library_obj *lib, char *name, | |
c8c1ad8c | 729 | char *buf, u32 size) |
c4ca3d5a ORL |
730 | { |
731 | struct dbll_library_obj *zl_lib = (struct dbll_library_obj *)lib; | |
732 | bool opened_doff = false; | |
733 | u32 byte_size; /* size of bytes */ | |
734 | u32 ul_sect_size; /* size of section */ | |
735 | const struct ldr_section_info *sect = NULL; | |
736 | int status = 0; | |
737 | ||
738 | DBC_REQUIRE(refs > 0); | |
739 | DBC_REQUIRE(zl_lib); | |
740 | DBC_REQUIRE(name != NULL); | |
c8c1ad8c | 741 | DBC_REQUIRE(buf != NULL); |
c4ca3d5a ORL |
742 | DBC_REQUIRE(size != 0); |
743 | ||
744 | /* If DOFF file is not open, we open it. */ | |
745 | if (zl_lib != NULL) { | |
746 | if (zl_lib->fp == NULL) { | |
747 | status = dof_open(zl_lib); | |
157990f0 | 748 | if (!status) |
c4ca3d5a ORL |
749 | opened_doff = true; |
750 | ||
751 | } else { | |
752 | (*(zl_lib->target_obj->attrs.fseek)) (zl_lib->fp, | |
753 | zl_lib->ul_pos, | |
754 | SEEK_SET); | |
755 | } | |
756 | } else { | |
757 | status = -EFAULT; | |
758 | } | |
51d5e099 | 759 | if (status) |
c4ca3d5a ORL |
760 | goto func_cont; |
761 | ||
762 | byte_size = 1; | |
763 | if (!dload_get_section_info(zl_lib->desc, name, §)) { | |
764 | status = -ENXIO; | |
765 | goto func_cont; | |
766 | } | |
767 | /* | |
768 | * Ensure the supplied buffer size is sufficient to store | |
c8c1ad8c | 769 | * the section buf to be read. |
c4ca3d5a ORL |
770 | */ |
771 | ul_sect_size = sect->size * byte_size; | |
772 | /* Make sure size is even for good swap */ | |
773 | if (ul_sect_size % 2) | |
774 | ul_sect_size++; | |
775 | ||
776 | /* Align size */ | |
777 | ul_sect_size = DOFF_ALIGN(ul_sect_size); | |
778 | if (ul_sect_size > size) { | |
779 | status = -EPERM; | |
780 | } else { | |
c8c1ad8c | 781 | if (!dload_get_section(zl_lib->desc, sect, buf)) |
c4ca3d5a ORL |
782 | status = -EBADF; |
783 | ||
784 | } | |
785 | func_cont: | |
786 | if (opened_doff) { | |
787 | dof_close(zl_lib); | |
788 | opened_doff = false; | |
789 | } | |
790 | ||
c8c1ad8c RS |
791 | dev_dbg(bridge, "%s: lib: %p name: %s buf: %p size: 0x%x, " |
792 | "status 0x%x\n", __func__, lib, name, buf, size, status); | |
c4ca3d5a ORL |
793 | return status; |
794 | } | |
795 | ||
796 | /* | |
797 | * ======== dbll_set_attrs ======== | |
798 | * Set the attributes of the target. | |
799 | */ | |
800 | void dbll_set_attrs(struct dbll_tar_obj *target, struct dbll_attrs *pattrs) | |
801 | { | |
802 | struct dbll_tar_obj *zl_target = (struct dbll_tar_obj *)target; | |
803 | DBC_REQUIRE(refs > 0); | |
804 | DBC_REQUIRE(zl_target); | |
805 | DBC_REQUIRE(pattrs != NULL); | |
806 | ||
807 | if ((pattrs != NULL) && (zl_target != NULL)) | |
808 | zl_target->attrs = *pattrs; | |
809 | ||
810 | } | |
811 | ||
812 | /* | |
813 | * ======== dbll_unload ======== | |
814 | */ | |
815 | void dbll_unload(struct dbll_library_obj *lib, struct dbll_attrs *attrs) | |
816 | { | |
817 | struct dbll_library_obj *zl_lib = (struct dbll_library_obj *)lib; | |
818 | s32 err = 0; | |
819 | ||
820 | DBC_REQUIRE(refs > 0); | |
821 | DBC_REQUIRE(zl_lib); | |
822 | DBC_REQUIRE(zl_lib->load_ref > 0); | |
823 | dev_dbg(bridge, "%s: lib: %p\n", __func__, lib); | |
824 | zl_lib->load_ref--; | |
825 | /* Unload only if reference count is 0 */ | |
826 | if (zl_lib->load_ref != 0) | |
827 | goto func_end; | |
828 | ||
829 | zl_lib->target_obj->attrs = *attrs; | |
830 | if (zl_lib->dload_mod_obj) { | |
831 | err = dynamic_unload_module(zl_lib->dload_mod_obj, | |
832 | &zl_lib->symbol.dl_symbol, | |
833 | &zl_lib->allocate.dl_alloc, | |
834 | &zl_lib->init.dl_init); | |
835 | if (err != 0) | |
836 | dev_dbg(bridge, "%s: failed: 0x%x\n", __func__, err); | |
837 | } | |
838 | /* remove symbols from symbol table */ | |
839 | if (zl_lib->sym_tab != NULL) { | |
840 | gh_delete(zl_lib->sym_tab); | |
841 | zl_lib->sym_tab = NULL; | |
842 | } | |
843 | /* delete DOFF desc since it holds *lots* of host OS | |
844 | * resources */ | |
845 | dof_close(zl_lib); | |
846 | func_end: | |
847 | DBC_ENSURE(zl_lib->load_ref >= 0); | |
848 | } | |
849 | ||
850 | /* | |
851 | * ======== dbll_unload_sect ======== | |
852 | * Not supported for COFF. | |
853 | */ | |
318b5df9 | 854 | int dbll_unload_sect(struct dbll_library_obj *lib, char *sec_name, |
c4ca3d5a ORL |
855 | struct dbll_attrs *attrs) |
856 | { | |
857 | DBC_REQUIRE(refs > 0); | |
318b5df9 | 858 | DBC_REQUIRE(sec_name != NULL); |
c4ca3d5a ORL |
859 | |
860 | return -ENOSYS; | |
861 | } | |
862 | ||
863 | /* | |
864 | * ======== dof_close ======== | |
865 | */ | |
866 | static void dof_close(struct dbll_library_obj *zl_lib) | |
867 | { | |
868 | if (zl_lib->desc) { | |
869 | dload_module_close(zl_lib->desc); | |
870 | zl_lib->desc = NULL; | |
871 | } | |
872 | /* close file */ | |
873 | if (zl_lib->fp) { | |
874 | (zl_lib->target_obj->attrs.fclose) (zl_lib->fp); | |
875 | zl_lib->fp = NULL; | |
876 | } | |
877 | } | |
878 | ||
879 | /* | |
880 | * ======== dof_open ======== | |
881 | */ | |
882 | static int dof_open(struct dbll_library_obj *zl_lib) | |
883 | { | |
884 | void *open = *(zl_lib->target_obj->attrs.fopen); | |
885 | int status = 0; | |
886 | ||
887 | /* First open the file for the dynamic loader, then open COF */ | |
888 | zl_lib->fp = | |
889 | (void *)((dbll_f_open_fxn) (open)) (zl_lib->file_name, "rb"); | |
890 | ||
891 | /* Open DOFF module */ | |
892 | if (zl_lib->fp && zl_lib->desc == NULL) { | |
893 | (*(zl_lib->target_obj->attrs.fseek)) (zl_lib->fp, (long)0, | |
894 | SEEK_SET); | |
895 | zl_lib->desc = | |
896 | dload_module_open(&zl_lib->stream.dl_stream, | |
897 | &zl_lib->symbol.dl_symbol); | |
898 | if (zl_lib->desc == NULL) { | |
899 | (zl_lib->target_obj->attrs.fclose) (zl_lib->fp); | |
900 | zl_lib->fp = NULL; | |
901 | status = -EBADF; | |
902 | } | |
903 | } else { | |
904 | status = -EBADF; | |
905 | } | |
906 | ||
907 | return status; | |
908 | } | |
909 | ||
910 | /* | |
911 | * ======== name_hash ======== | |
912 | */ | |
913 | static u16 name_hash(void *key, u16 max_bucket) | |
914 | { | |
915 | u16 ret; | |
916 | u16 hash; | |
917 | char *name = (char *)key; | |
918 | ||
919 | DBC_REQUIRE(name != NULL); | |
920 | ||
921 | hash = 0; | |
922 | ||
923 | while (*name) { | |
924 | hash <<= 1; | |
925 | hash ^= *name++; | |
926 | } | |
927 | ||
928 | ret = hash % max_bucket; | |
929 | ||
930 | return ret; | |
931 | } | |
932 | ||
933 | /* | |
934 | * ======== name_match ======== | |
935 | */ | |
c8c1ad8c | 936 | static bool name_match(void *key, void *sp) |
c4ca3d5a ORL |
937 | { |
938 | DBC_REQUIRE(key != NULL); | |
c8c1ad8c | 939 | DBC_REQUIRE(sp != NULL); |
c4ca3d5a | 940 | |
c8c1ad8c RS |
941 | if ((key != NULL) && (sp != NULL)) { |
942 | if (strcmp((char *)key, ((struct dbll_symbol *)sp)->name) == | |
c4ca3d5a ORL |
943 | 0) |
944 | return true; | |
945 | } | |
946 | return false; | |
947 | } | |
948 | ||
949 | /* | |
950 | * ======== no_op ======== | |
951 | */ | |
952 | static int no_op(struct dynamic_loader_initialize *thisptr, void *bufr, | |
953 | ldr_addr locn, struct ldr_section_info *info, unsigned bytsize) | |
954 | { | |
955 | return 1; | |
956 | } | |
957 | ||
958 | /* | |
959 | * ======== sym_delete ======== | |
960 | */ | |
961 | static void sym_delete(void *value) | |
962 | { | |
963 | struct dbll_symbol *sp = (struct dbll_symbol *)value; | |
964 | ||
965 | kfree(sp->name); | |
966 | } | |
967 | ||
968 | /* | |
969 | * Dynamic Loader Functions | |
970 | */ | |
971 | ||
972 | /* dynamic_loader_stream */ | |
973 | /* | |
974 | * ======== dbll_read_buffer ======== | |
975 | */ | |
976 | static int dbll_read_buffer(struct dynamic_loader_stream *this, void *buffer, | |
977 | unsigned bufsize) | |
978 | { | |
979 | struct dbll_stream *pstream = (struct dbll_stream *)this; | |
980 | struct dbll_library_obj *lib; | |
981 | int bytes_read = 0; | |
982 | ||
983 | DBC_REQUIRE(this != NULL); | |
984 | lib = pstream->lib; | |
985 | DBC_REQUIRE(lib); | |
986 | ||
987 | if (lib != NULL) { | |
988 | bytes_read = | |
989 | (*(lib->target_obj->attrs.fread)) (buffer, 1, bufsize, | |
990 | lib->fp); | |
991 | } | |
992 | return bytes_read; | |
993 | } | |
994 | ||
995 | /* | |
996 | * ======== dbll_set_file_posn ======== | |
997 | */ | |
998 | static int dbll_set_file_posn(struct dynamic_loader_stream *this, | |
999 | unsigned int pos) | |
1000 | { | |
1001 | struct dbll_stream *pstream = (struct dbll_stream *)this; | |
1002 | struct dbll_library_obj *lib; | |
1003 | int status = 0; /* Success */ | |
1004 | ||
1005 | DBC_REQUIRE(this != NULL); | |
1006 | lib = pstream->lib; | |
1007 | DBC_REQUIRE(lib); | |
1008 | ||
1009 | if (lib != NULL) { | |
1010 | status = (*(lib->target_obj->attrs.fseek)) (lib->fp, (long)pos, | |
1011 | SEEK_SET); | |
1012 | } | |
1013 | ||
1014 | return status; | |
1015 | } | |
1016 | ||
1017 | /* dynamic_loader_sym */ | |
1018 | ||
1019 | /* | |
1020 | * ======== dbll_find_symbol ======== | |
1021 | */ | |
1022 | static struct dynload_symbol *dbll_find_symbol(struct dynamic_loader_sym *this, | |
1023 | const char *name) | |
1024 | { | |
1025 | struct dynload_symbol *ret_sym; | |
1026 | struct ldr_symbol *ldr_sym = (struct ldr_symbol *)this; | |
1027 | struct dbll_library_obj *lib; | |
1028 | struct dbll_sym_val *dbll_sym = NULL; | |
1029 | bool status = false; /* Symbol not found yet */ | |
1030 | ||
1031 | DBC_REQUIRE(this != NULL); | |
1032 | lib = ldr_sym->lib; | |
1033 | DBC_REQUIRE(lib); | |
1034 | ||
1035 | if (lib != NULL) { | |
1036 | if (lib->target_obj->attrs.sym_lookup) { | |
1037 | /* Check current lib + base lib + dep lib + | |
1038 | * persistent lib */ | |
1039 | status = (*(lib->target_obj->attrs.sym_lookup)) | |
1040 | (lib->target_obj->attrs.sym_handle, | |
1041 | lib->target_obj->attrs.sym_arg, | |
1042 | lib->target_obj->attrs.rmm_handle, name, | |
1043 | &dbll_sym); | |
1044 | } else { | |
1045 | /* Just check current lib for symbol */ | |
1046 | status = dbll_get_addr((struct dbll_library_obj *)lib, | |
1047 | (char *)name, &dbll_sym); | |
1048 | if (!status) { | |
1049 | status = | |
1050 | dbll_get_c_addr((struct dbll_library_obj *) | |
1051 | lib, (char *)name, | |
1052 | &dbll_sym); | |
1053 | } | |
1054 | } | |
1055 | } | |
1056 | ||
1057 | if (!status && gbl_search) | |
1058 | dev_dbg(bridge, "%s: Symbol not found: %s\n", __func__, name); | |
1059 | ||
1060 | DBC_ASSERT((status && (dbll_sym != NULL)) | |
1061 | || (!status && (dbll_sym == NULL))); | |
1062 | ||
1063 | ret_sym = (struct dynload_symbol *)dbll_sym; | |
1064 | return ret_sym; | |
1065 | } | |
1066 | ||
1067 | /* | |
1068 | * ======== find_in_symbol_table ======== | |
1069 | */ | |
1070 | static struct dynload_symbol *find_in_symbol_table(struct dynamic_loader_sym | |
1071 | *this, const char *name, | |
1072 | unsigned moduleid) | |
1073 | { | |
1074 | struct dynload_symbol *ret_sym; | |
1075 | struct ldr_symbol *ldr_sym = (struct ldr_symbol *)this; | |
1076 | struct dbll_library_obj *lib; | |
1077 | struct dbll_symbol *sym; | |
1078 | ||
1079 | DBC_REQUIRE(this != NULL); | |
1080 | lib = ldr_sym->lib; | |
1081 | DBC_REQUIRE(lib); | |
1082 | DBC_REQUIRE(lib->sym_tab != NULL); | |
1083 | ||
1084 | sym = (struct dbll_symbol *)gh_find(lib->sym_tab, (char *)name); | |
1085 | ||
1086 | ret_sym = (struct dynload_symbol *)&sym->value; | |
1087 | return ret_sym; | |
1088 | } | |
1089 | ||
1090 | /* | |
1091 | * ======== dbll_add_to_symbol_table ======== | |
1092 | */ | |
1093 | static struct dynload_symbol *dbll_add_to_symbol_table(struct dynamic_loader_sym | |
1094 | *this, const char *name, | |
95870a88 | 1095 | unsigned module_id) |
c4ca3d5a ORL |
1096 | { |
1097 | struct dbll_symbol *sym_ptr = NULL; | |
1098 | struct dbll_symbol symbol; | |
1099 | struct dynload_symbol *dbll_sym = NULL; | |
1100 | struct ldr_symbol *ldr_sym = (struct ldr_symbol *)this; | |
1101 | struct dbll_library_obj *lib; | |
1102 | struct dynload_symbol *ret; | |
1103 | ||
1104 | DBC_REQUIRE(this != NULL); | |
1105 | DBC_REQUIRE(name); | |
1106 | lib = ldr_sym->lib; | |
1107 | DBC_REQUIRE(lib); | |
1108 | ||
1109 | /* Check to see if symbol is already defined in symbol table */ | |
1110 | if (!(lib->target_obj->attrs.base_image)) { | |
1111 | gbl_search = false; | |
1112 | dbll_sym = dbll_find_symbol(this, name); | |
1113 | gbl_search = true; | |
1114 | if (dbll_sym) { | |
1115 | redefined_symbol = true; | |
1116 | dev_dbg(bridge, "%s already defined in symbol table\n", | |
1117 | name); | |
1118 | return NULL; | |
1119 | } | |
1120 | } | |
1121 | /* Allocate string to copy symbol name */ | |
1122 | symbol.name = kzalloc(strlen((char *const)name) + 1, GFP_KERNEL); | |
1123 | if (symbol.name == NULL) | |
1124 | return NULL; | |
1125 | ||
1126 | if (symbol.name != NULL) { | |
1127 | /* Just copy name (value will be filled in by dynamic loader) */ | |
1128 | strncpy(symbol.name, (char *const)name, | |
1129 | strlen((char *const)name) + 1); | |
1130 | ||
1131 | /* Add symbol to symbol table */ | |
1132 | sym_ptr = | |
1133 | (struct dbll_symbol *)gh_insert(lib->sym_tab, (void *)name, | |
1134 | (void *)&symbol); | |
1135 | if (sym_ptr == NULL) | |
1136 | kfree(symbol.name); | |
1137 | ||
1138 | } | |
1139 | if (sym_ptr != NULL) | |
1140 | ret = (struct dynload_symbol *)&sym_ptr->value; | |
1141 | else | |
1142 | ret = NULL; | |
1143 | ||
1144 | return ret; | |
1145 | } | |
1146 | ||
1147 | /* | |
1148 | * ======== dbll_purge_symbol_table ======== | |
1149 | */ | |
1150 | static void dbll_purge_symbol_table(struct dynamic_loader_sym *this, | |
95870a88 | 1151 | unsigned module_id) |
c4ca3d5a ORL |
1152 | { |
1153 | struct ldr_symbol *ldr_sym = (struct ldr_symbol *)this; | |
1154 | struct dbll_library_obj *lib; | |
1155 | ||
1156 | DBC_REQUIRE(this != NULL); | |
1157 | lib = ldr_sym->lib; | |
1158 | DBC_REQUIRE(lib); | |
1159 | ||
1160 | /* May not need to do anything */ | |
1161 | } | |
1162 | ||
1163 | /* | |
1164 | * ======== allocate ======== | |
1165 | */ | |
1166 | static void *allocate(struct dynamic_loader_sym *this, unsigned memsize) | |
1167 | { | |
1168 | struct ldr_symbol *ldr_sym = (struct ldr_symbol *)this; | |
1169 | struct dbll_library_obj *lib; | |
1170 | void *buf; | |
1171 | ||
1172 | DBC_REQUIRE(this != NULL); | |
1173 | lib = ldr_sym->lib; | |
1174 | DBC_REQUIRE(lib); | |
1175 | ||
1176 | buf = kzalloc(memsize, GFP_KERNEL); | |
1177 | ||
1178 | return buf; | |
1179 | } | |
1180 | ||
1181 | /* | |
1182 | * ======== deallocate ======== | |
1183 | */ | |
95870a88 | 1184 | static void deallocate(struct dynamic_loader_sym *this, void *mem_ptr) |
c4ca3d5a ORL |
1185 | { |
1186 | struct ldr_symbol *ldr_sym = (struct ldr_symbol *)this; | |
1187 | struct dbll_library_obj *lib; | |
1188 | ||
1189 | DBC_REQUIRE(this != NULL); | |
1190 | lib = ldr_sym->lib; | |
1191 | DBC_REQUIRE(lib); | |
1192 | ||
95870a88 | 1193 | kfree(mem_ptr); |
c4ca3d5a ORL |
1194 | } |
1195 | ||
1196 | /* | |
1197 | * ======== dbll_err_report ======== | |
1198 | */ | |
1199 | static void dbll_err_report(struct dynamic_loader_sym *this, const char *errstr, | |
1200 | va_list args) | |
1201 | { | |
1202 | struct ldr_symbol *ldr_sym = (struct ldr_symbol *)this; | |
1203 | struct dbll_library_obj *lib; | |
1204 | char temp_buf[MAXEXPR]; | |
1205 | ||
1206 | DBC_REQUIRE(this != NULL); | |
1207 | lib = ldr_sym->lib; | |
1208 | DBC_REQUIRE(lib); | |
1209 | vsnprintf((char *)temp_buf, MAXEXPR, (char *)errstr, args); | |
1210 | dev_dbg(bridge, "%s\n", temp_buf); | |
1211 | } | |
1212 | ||
1213 | /* dynamic_loader_allocate */ | |
1214 | ||
1215 | /* | |
1216 | * ======== dbll_rmm_alloc ======== | |
1217 | */ | |
1218 | static int dbll_rmm_alloc(struct dynamic_loader_allocate *this, | |
1219 | struct ldr_section_info *info, unsigned align) | |
1220 | { | |
1221 | struct dbll_alloc *dbll_alloc_obj = (struct dbll_alloc *)this; | |
1222 | struct dbll_library_obj *lib; | |
1223 | int status = 0; | |
1224 | u32 mem_sect_type; | |
1225 | struct rmm_addr rmm_addr_obj; | |
5e768067 | 1226 | s32 ret = true; |
c4ca3d5a ORL |
1227 | unsigned stype = DLOAD_SECTION_TYPE(info->type); |
1228 | char *token = NULL; | |
1229 | char *sz_sec_last_token = NULL; | |
1230 | char *sz_last_token = NULL; | |
1231 | char *sz_sect_name = NULL; | |
1232 | char *psz_cur; | |
1233 | s32 token_len = 0; | |
1234 | s32 seg_id = -1; | |
1235 | s32 req = -1; | |
1236 | s32 count = 0; | |
1237 | u32 alloc_size = 0; | |
1238 | u32 run_addr_flag = 0; | |
1239 | ||
1240 | DBC_REQUIRE(this != NULL); | |
1241 | lib = dbll_alloc_obj->lib; | |
1242 | DBC_REQUIRE(lib); | |
1243 | ||
1244 | mem_sect_type = | |
1245 | (stype == DLOAD_TEXT) ? DBLL_CODE : (stype == | |
1246 | DLOAD_BSS) ? DBLL_BSS : | |
1247 | DBLL_DATA; | |
1248 | ||
1249 | /* Attempt to extract the segment ID and requirement information from | |
1250 | the name of the section */ | |
1251 | DBC_REQUIRE(info->name); | |
1252 | token_len = strlen((char *)(info->name)) + 1; | |
1253 | ||
1254 | sz_sect_name = kzalloc(token_len, GFP_KERNEL); | |
1255 | sz_last_token = kzalloc(token_len, GFP_KERNEL); | |
1256 | sz_sec_last_token = kzalloc(token_len, GFP_KERNEL); | |
1257 | ||
1258 | if (sz_sect_name == NULL || sz_sec_last_token == NULL || | |
1259 | sz_last_token == NULL) { | |
1260 | status = -ENOMEM; | |
1261 | goto func_cont; | |
1262 | } | |
1263 | strncpy(sz_sect_name, (char *)(info->name), token_len); | |
1264 | psz_cur = sz_sect_name; | |
1265 | while ((token = strsep(&psz_cur, ":")) && *token != '\0') { | |
1266 | strncpy(sz_sec_last_token, sz_last_token, | |
1267 | strlen(sz_last_token) + 1); | |
1268 | strncpy(sz_last_token, token, strlen(token) + 1); | |
1269 | token = strsep(&psz_cur, ":"); | |
1270 | count++; /* optimizes processing */ | |
1271 | } | |
1272 | /* If token is 0 or 1, and sz_sec_last_token is DYN_DARAM or DYN_SARAM, | |
1273 | or DYN_EXTERNAL, then mem granularity information is present | |
1274 | within the section name - only process if there are at least three | |
1275 | tokens within the section name (just a minor optimization) */ | |
1276 | if (count >= 3) | |
1277 | strict_strtol(sz_last_token, 10, (long *)&req); | |
1278 | ||
1279 | if ((req == 0) || (req == 1)) { | |
1280 | if (strcmp(sz_sec_last_token, "DYN_DARAM") == 0) { | |
1281 | seg_id = 0; | |
1282 | } else { | |
1283 | if (strcmp(sz_sec_last_token, "DYN_SARAM") == 0) { | |
1284 | seg_id = 1; | |
1285 | } else { | |
1286 | if (strcmp(sz_sec_last_token, | |
1287 | "DYN_EXTERNAL") == 0) | |
1288 | seg_id = 2; | |
1289 | } | |
1290 | } | |
1291 | } | |
1292 | func_cont: | |
1293 | kfree(sz_sect_name); | |
1294 | sz_sect_name = NULL; | |
1295 | kfree(sz_last_token); | |
1296 | sz_last_token = NULL; | |
1297 | kfree(sz_sec_last_token); | |
1298 | sz_sec_last_token = NULL; | |
1299 | ||
1300 | if (mem_sect_type == DBLL_CODE) | |
1301 | alloc_size = info->size + GEM_L1P_PREFETCH_SIZE; | |
1302 | else | |
1303 | alloc_size = info->size; | |
1304 | ||
1305 | if (info->load_addr != info->run_addr) | |
1306 | run_addr_flag = 1; | |
1307 | /* TODO - ideally, we can pass the alignment requirement also | |
1308 | * from here */ | |
1309 | if (lib != NULL) { | |
1310 | status = | |
1311 | (lib->target_obj->attrs.alloc) (lib->target_obj->attrs. | |
1312 | rmm_handle, mem_sect_type, | |
1313 | alloc_size, align, | |
1314 | (u32 *) &rmm_addr_obj, | |
5e768067 | 1315 | seg_id, req, false); |
c4ca3d5a | 1316 | } |
51d5e099 | 1317 | if (status) { |
c4ca3d5a ORL |
1318 | ret = false; |
1319 | } else { | |
1320 | /* RMM gives word address. Need to convert to byte address */ | |
1321 | info->load_addr = rmm_addr_obj.addr * DSPWORDSIZE; | |
1322 | if (!run_addr_flag) | |
1323 | info->run_addr = info->load_addr; | |
1324 | info->context = (u32) rmm_addr_obj.segid; | |
1325 | dev_dbg(bridge, "%s: %s base = 0x%x len = 0x%x, " | |
1326 | "info->run_addr 0x%x, info->load_addr 0x%x\n", | |
1327 | __func__, info->name, info->load_addr / DSPWORDSIZE, | |
1328 | info->size / DSPWORDSIZE, info->run_addr, | |
1329 | info->load_addr); | |
1330 | } | |
1331 | return ret; | |
1332 | } | |
1333 | ||
1334 | /* | |
1335 | * ======== rmm_dealloc ======== | |
1336 | */ | |
1337 | static void rmm_dealloc(struct dynamic_loader_allocate *this, | |
1338 | struct ldr_section_info *info) | |
1339 | { | |
1340 | struct dbll_alloc *dbll_alloc_obj = (struct dbll_alloc *)this; | |
1341 | struct dbll_library_obj *lib; | |
1342 | u32 segid; | |
1343 | int status = 0; | |
1344 | unsigned stype = DLOAD_SECTION_TYPE(info->type); | |
1345 | u32 mem_sect_type; | |
1346 | u32 free_size = 0; | |
1347 | ||
1348 | mem_sect_type = | |
1349 | (stype == DLOAD_TEXT) ? DBLL_CODE : (stype == | |
1350 | DLOAD_BSS) ? DBLL_BSS : | |
1351 | DBLL_DATA; | |
1352 | DBC_REQUIRE(this != NULL); | |
1353 | lib = dbll_alloc_obj->lib; | |
1354 | DBC_REQUIRE(lib); | |
1355 | /* segid was set by alloc function */ | |
1356 | segid = (u32) info->context; | |
1357 | if (mem_sect_type == DBLL_CODE) | |
1358 | free_size = info->size + GEM_L1P_PREFETCH_SIZE; | |
1359 | else | |
1360 | free_size = info->size; | |
1361 | if (lib != NULL) { | |
1362 | status = | |
1363 | (lib->target_obj->attrs.free) (lib->target_obj->attrs. | |
1364 | sym_handle, segid, | |
1365 | info->load_addr / | |
1366 | DSPWORDSIZE, free_size, | |
1367 | false); | |
1368 | } | |
1369 | } | |
1370 | ||
1371 | /* dynamic_loader_initialize */ | |
1372 | /* | |
1373 | * ======== connect ======== | |
1374 | */ | |
1375 | static int connect(struct dynamic_loader_initialize *this) | |
1376 | { | |
1377 | return true; | |
1378 | } | |
1379 | ||
1380 | /* | |
1381 | * ======== read_mem ======== | |
1382 | * This function does not need to be implemented. | |
1383 | */ | |
1384 | static int read_mem(struct dynamic_loader_initialize *this, void *buf, | |
1385 | ldr_addr addr, struct ldr_section_info *info, | |
1386 | unsigned nbytes) | |
1387 | { | |
1388 | struct dbll_init_obj *init_obj = (struct dbll_init_obj *)this; | |
1389 | struct dbll_library_obj *lib; | |
1390 | int bytes_read = 0; | |
1391 | ||
1392 | DBC_REQUIRE(this != NULL); | |
1393 | lib = init_obj->lib; | |
1394 | DBC_REQUIRE(lib); | |
1395 | /* Need bridge_brd_read function */ | |
1396 | return bytes_read; | |
1397 | } | |
1398 | ||
1399 | /* | |
1400 | * ======== write_mem ======== | |
1401 | */ | |
1402 | static int write_mem(struct dynamic_loader_initialize *this, void *buf, | |
1403 | ldr_addr addr, struct ldr_section_info *info, | |
1404 | unsigned bytes) | |
1405 | { | |
1406 | struct dbll_init_obj *init_obj = (struct dbll_init_obj *)this; | |
1407 | struct dbll_library_obj *lib; | |
1408 | struct dbll_tar_obj *target_obj; | |
1409 | struct dbll_sect_info sect_info; | |
1410 | u32 mem_sect_type; | |
1411 | bool ret = true; | |
1412 | ||
1413 | DBC_REQUIRE(this != NULL); | |
1414 | lib = init_obj->lib; | |
1415 | if (!lib) | |
1416 | return false; | |
1417 | ||
1418 | target_obj = lib->target_obj; | |
1419 | ||
1420 | mem_sect_type = | |
1421 | (DLOAD_SECTION_TYPE(info->type) == | |
1422 | DLOAD_TEXT) ? DBLL_CODE : DBLL_DATA; | |
1423 | if (target_obj && target_obj->attrs.write) { | |
1424 | ret = | |
1425 | (*target_obj->attrs.write) (target_obj->attrs.input_params, | |
1426 | addr, buf, bytes, | |
1427 | mem_sect_type); | |
1428 | ||
1429 | if (target_obj->attrs.log_write) { | |
1430 | sect_info.name = info->name; | |
1431 | sect_info.sect_run_addr = info->run_addr; | |
1432 | sect_info.sect_load_addr = info->load_addr; | |
1433 | sect_info.size = info->size; | |
1434 | sect_info.type = mem_sect_type; | |
1435 | /* Pass the information about what we've written to | |
1436 | * another module */ | |
1437 | (*target_obj->attrs.log_write) (target_obj->attrs. | |
1438 | log_write_handle, | |
1439 | §_info, addr, | |
1440 | bytes); | |
1441 | } | |
1442 | } | |
1443 | return ret; | |
1444 | } | |
1445 | ||
1446 | /* | |
1447 | * ======== fill_mem ======== | |
1448 | * Fill bytes of memory at a given address with a given value by | |
1449 | * writing from a buffer containing the given value. Write in | |
1450 | * sets of MAXEXPR (128) bytes to avoid large stack buffer issues. | |
1451 | */ | |
1452 | static int fill_mem(struct dynamic_loader_initialize *this, ldr_addr addr, | |
1453 | struct ldr_section_info *info, unsigned bytes, unsigned val) | |
1454 | { | |
1455 | bool ret = true; | |
1456 | char *pbuf; | |
1457 | struct dbll_library_obj *lib; | |
1458 | struct dbll_init_obj *init_obj = (struct dbll_init_obj *)this; | |
1459 | ||
1460 | DBC_REQUIRE(this != NULL); | |
1461 | lib = init_obj->lib; | |
1462 | pbuf = NULL; | |
1463 | /* Pass the NULL pointer to write_mem to get the start address of Shared | |
1464 | memory. This is a trick to just get the start address, there is no | |
1465 | writing taking place with this Writemem | |
1466 | */ | |
1467 | if ((lib->target_obj->attrs.write) != (dbll_write_fxn) no_op) | |
1468 | write_mem(this, &pbuf, addr, info, 0); | |
1469 | if (pbuf) | |
1470 | memset(pbuf, val, bytes); | |
1471 | ||
1472 | return ret; | |
1473 | } | |
1474 | ||
1475 | /* | |
1476 | * ======== execute ======== | |
1477 | */ | |
1478 | static int execute(struct dynamic_loader_initialize *this, ldr_addr start) | |
1479 | { | |
1480 | struct dbll_init_obj *init_obj = (struct dbll_init_obj *)this; | |
1481 | struct dbll_library_obj *lib; | |
1482 | bool ret = true; | |
1483 | ||
1484 | DBC_REQUIRE(this != NULL); | |
1485 | lib = init_obj->lib; | |
1486 | DBC_REQUIRE(lib); | |
1487 | /* Save entry point */ | |
1488 | if (lib != NULL) | |
1489 | lib->entry = (u32) start; | |
1490 | ||
1491 | return ret; | |
1492 | } | |
1493 | ||
1494 | /* | |
1495 | * ======== release ======== | |
1496 | */ | |
1497 | static void release(struct dynamic_loader_initialize *this) | |
1498 | { | |
1499 | } | |
1500 | ||
4f551c8f | 1501 | #ifdef CONFIG_TIDSPBRIDGE_BACKTRACE |
c4ca3d5a ORL |
1502 | /** |
1503 | * find_symbol_context - Basic symbol context structure | |
25a606c3 | 1504 | * @address: Symbol Address |
c4ca3d5a ORL |
1505 | * @offset_range: Offset range where the search for the DSP symbol |
1506 | * started. | |
1507 | * @cur_best_offset: Best offset to start looking for the DSP symbol | |
1508 | * @sym_addr: Address of the DSP symbol | |
1509 | * @name: Symbol name | |
1510 | * | |
1511 | */ | |
1512 | struct find_symbol_context { | |
1513 | /* input */ | |
1514 | u32 address; | |
1515 | u32 offset_range; | |
1516 | /* state */ | |
1517 | u32 cur_best_offset; | |
1518 | /* output */ | |
1519 | u32 sym_addr; | |
1520 | char name[120]; | |
1521 | }; | |
1522 | ||
1523 | /** | |
1524 | * find_symbol_callback() - Validates symbol address and copies the symbol name | |
1525 | * to the user data. | |
1526 | * @elem: dsp library context | |
1527 | * @user_data: Find symbol context | |
1528 | * | |
1529 | */ | |
1530 | void find_symbol_callback(void *elem, void *user_data) | |
1531 | { | |
1532 | struct dbll_symbol *symbol = elem; | |
1533 | struct find_symbol_context *context = user_data; | |
1534 | u32 symbol_addr = symbol->value.value; | |
1535 | u32 offset = context->address - symbol_addr; | |
1536 | ||
1537 | /* | |
1538 | * Address given should be greater than symbol address, | |
1539 | * symbol address should be within specified range | |
1540 | * and the offset should be better than previous one | |
1541 | */ | |
1542 | if (context->address >= symbol_addr && symbol_addr < (u32)-1 && | |
1543 | offset < context->cur_best_offset) { | |
1544 | context->cur_best_offset = offset; | |
1545 | context->sym_addr = symbol_addr; | |
1546 | strncpy(context->name, symbol->name, sizeof(context->name)); | |
1547 | } | |
1548 | ||
1549 | return; | |
1550 | } | |
1551 | ||
1552 | /** | |
1553 | * dbll_find_dsp_symbol() - This function retrieves the dsp symbol from the dsp binary. | |
1554 | * @zl_lib: DSP binary obj library pointer | |
1555 | * @address: Given address to find the dsp symbol | |
1556 | * @offset_range: offset range to look for dsp symbol | |
1557 | * @sym_addr_output: Symbol Output address | |
1558 | * @name_output: String with the dsp symbol | |
1559 | * | |
1560 | * This function retrieves the dsp symbol from the dsp binary. | |
1561 | */ | |
1562 | bool dbll_find_dsp_symbol(struct dbll_library_obj *zl_lib, u32 address, | |
1563 | u32 offset_range, u32 *sym_addr_output, | |
1564 | char *name_output) | |
1565 | { | |
1566 | bool status = false; | |
1567 | struct find_symbol_context context; | |
1568 | ||
1569 | context.address = address; | |
1570 | context.offset_range = offset_range; | |
1571 | context.cur_best_offset = offset_range; | |
1572 | context.sym_addr = 0; | |
1573 | context.name[0] = '\0'; | |
1574 | ||
1575 | gh_iterate(zl_lib->sym_tab, find_symbol_callback, &context); | |
1576 | ||
1577 | if (context.name[0]) { | |
1578 | status = true; | |
1579 | strcpy(name_output, context.name); | |
1580 | *sym_addr_output = context.sym_addr; | |
1581 | } | |
1582 | ||
1583 | return status; | |
1584 | } | |
4f551c8f | 1585 | #endif |