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c906108c SS |
1 | /* This file is part of the program psim. |
2 | ||
3 | Copyright (C) 1994-1996, Andrew Cagney <cagney@highland.com.au> | |
4 | ||
5 | This program is free software; you can redistribute it and/or modify | |
6 | it under the terms of the GNU General Public License as published by | |
3fd725ef | 7 | the Free Software Foundation; either version 3 of the License, or |
c906108c SS |
8 | (at your option) any later version. |
9 | ||
10 | This program is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | GNU General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License | |
51b318de | 16 | along with this program; if not, see <http://www.gnu.org/licenses/>. |
c906108c SS |
17 | |
18 | */ | |
19 | ||
20 | ||
21 | #ifndef _CORE_C_ | |
22 | #define _CORE_C_ | |
23 | ||
24 | #include "basics.h" | |
25 | #include "device_table.h" | |
26 | #include "corefile.h" | |
27 | ||
28 | typedef struct _core_mapping core_mapping; | |
29 | struct _core_mapping { | |
30 | /* common */ | |
31 | int level; | |
32 | int space; | |
33 | unsigned_word base; | |
34 | unsigned_word bound; | |
35 | unsigned nr_bytes; | |
36 | /* memory map */ | |
37 | void *free_buffer; | |
38 | void *buffer; | |
39 | /* callback map */ | |
40 | device *device; | |
41 | /* growth */ | |
42 | core_mapping *next; | |
43 | }; | |
44 | ||
45 | struct _core_map { | |
46 | core_mapping *first; | |
47 | }; | |
48 | ||
49 | typedef enum { | |
50 | core_read_map, | |
51 | core_write_map, | |
52 | core_execute_map, | |
53 | nr_core_map_types, | |
54 | } core_map_types; | |
55 | ||
56 | struct _core { | |
57 | core_map map[nr_core_map_types]; | |
58 | }; | |
59 | ||
60 | ||
61 | INLINE_CORE\ | |
62 | (core *) | |
63 | core_create(void) | |
64 | { | |
65 | return ZALLOC(core); | |
66 | } | |
67 | ||
68 | ||
69 | INLINE_CORE\ | |
70 | (core *) | |
71 | core_from_device(device *root) | |
72 | { | |
73 | root = device_root(root); | |
74 | ASSERT(strcmp(device_name(root), "core") == 0); | |
75 | return device_data(root); | |
76 | } | |
77 | ||
78 | ||
79 | INLINE_CORE\ | |
80 | (void) | |
81 | core_init(core *memory) | |
82 | { | |
83 | core_map_types access_type; | |
84 | for (access_type = 0; | |
85 | access_type < nr_core_map_types; | |
86 | access_type++) { | |
87 | core_map *map = memory->map + access_type; | |
88 | /* blow away old mappings */ | |
89 | core_mapping *curr = map->first; | |
90 | while (curr != NULL) { | |
91 | core_mapping *tbd = curr; | |
92 | curr = curr->next; | |
93 | if (tbd->free_buffer != NULL) { | |
94 | ASSERT(tbd->buffer != NULL); | |
d79fe0d6 | 95 | free(tbd->free_buffer); |
c906108c | 96 | } |
d79fe0d6 | 97 | free(tbd); |
c906108c SS |
98 | } |
99 | map->first = NULL; | |
100 | } | |
101 | } | |
102 | ||
103 | ||
104 | ||
105 | /* the core has three sub mappings that the more efficient | |
106 | read/write fixed quantity functions use */ | |
107 | ||
108 | INLINE_CORE\ | |
109 | (core_map *) | |
110 | core_readable(core *memory) | |
111 | { | |
112 | return memory->map + core_read_map; | |
113 | } | |
114 | ||
115 | INLINE_CORE\ | |
116 | (core_map *) | |
117 | core_writeable(core *memory) | |
118 | { | |
119 | return memory->map + core_write_map; | |
120 | } | |
121 | ||
122 | INLINE_CORE\ | |
123 | (core_map *) | |
124 | core_executable(core *memory) | |
125 | { | |
126 | return memory->map + core_execute_map; | |
127 | } | |
128 | ||
129 | ||
130 | ||
131 | STATIC_INLINE_CORE\ | |
132 | (core_mapping *) | |
133 | new_core_mapping(attach_type attach, | |
134 | int space, | |
135 | unsigned_word addr, | |
136 | unsigned nr_bytes, | |
137 | device *device, | |
138 | void *buffer, | |
139 | void *free_buffer) | |
140 | { | |
141 | core_mapping *new_mapping = ZALLOC(core_mapping); | |
142 | /* common */ | |
143 | new_mapping->level = attach; | |
144 | new_mapping->space = space; | |
145 | new_mapping->base = addr; | |
146 | new_mapping->nr_bytes = nr_bytes; | |
147 | new_mapping->bound = addr + (nr_bytes - 1); | |
148 | if (attach == attach_raw_memory) { | |
149 | new_mapping->buffer = buffer; | |
150 | new_mapping->free_buffer = free_buffer; | |
151 | } | |
152 | else if (attach >= attach_callback) { | |
153 | new_mapping->device = device; | |
154 | } | |
155 | else { | |
156 | error("new_core_mapping() - internal error - unknown attach type %d\n", | |
157 | attach); | |
158 | } | |
159 | return new_mapping; | |
160 | } | |
161 | ||
162 | ||
163 | STATIC_INLINE_CORE\ | |
164 | (void) | |
165 | core_map_attach(core_map *access_map, | |
166 | attach_type attach, | |
167 | int space, | |
168 | unsigned_word addr, | |
169 | unsigned nr_bytes, /* host limited */ | |
170 | device *client, /*callback/default*/ | |
171 | void *buffer, /*raw_memory*/ | |
172 | void *free_buffer) /*raw_memory*/ | |
173 | { | |
174 | /* find the insertion point for this additional mapping and insert */ | |
175 | core_mapping *next_mapping; | |
176 | core_mapping **last_mapping; | |
177 | ||
178 | /* actually do occasionally get a zero size map */ | |
179 | if (nr_bytes == 0) { | |
180 | device_error(client, "called on core_map_attach() with size zero"); | |
181 | } | |
182 | ||
183 | /* find the insertion point (between last/next) */ | |
184 | next_mapping = access_map->first; | |
185 | last_mapping = &access_map->first; | |
186 | while(next_mapping != NULL | |
187 | && (next_mapping->level < attach | |
188 | || (next_mapping->level == attach | |
189 | && next_mapping->bound < addr))) { | |
190 | /* provided levels are the same */ | |
191 | /* assert: next_mapping->base > all bases before next_mapping */ | |
192 | /* assert: next_mapping->bound >= all bounds before next_mapping */ | |
193 | last_mapping = &next_mapping->next; | |
194 | next_mapping = next_mapping->next; | |
195 | } | |
196 | ||
197 | /* check insertion point correct */ | |
198 | ASSERT(next_mapping == NULL || next_mapping->level >= attach); | |
199 | if (next_mapping != NULL && next_mapping->level == attach | |
200 | && next_mapping->base < (addr + (nr_bytes - 1))) { | |
201 | device_error(client, "map overlap when attaching %d:0x%lx (%ld)", | |
202 | space, (long)addr, (long)nr_bytes); | |
203 | } | |
204 | ||
205 | /* create/insert the new mapping */ | |
206 | *last_mapping = new_core_mapping(attach, | |
207 | space, addr, nr_bytes, | |
208 | client, buffer, free_buffer); | |
209 | (*last_mapping)->next = next_mapping; | |
210 | } | |
211 | ||
212 | ||
213 | INLINE_CORE\ | |
214 | (void) | |
215 | core_attach(core *memory, | |
216 | attach_type attach, | |
217 | int space, | |
218 | access_type access, | |
219 | unsigned_word addr, | |
220 | unsigned nr_bytes, /* host limited */ | |
221 | device *client) /*callback/default*/ | |
222 | { | |
223 | core_map_types access_map; | |
224 | void *buffer; | |
225 | void *free_buffer; | |
226 | if (attach == attach_raw_memory) { | |
227 | /* Padd out the raw buffer to ensure that ADDR starts on a | |
228 | correctly aligned boundary */ | |
229 | int padding = (addr % sizeof (unsigned64)); | |
230 | free_buffer = zalloc(nr_bytes + padding); | |
231 | buffer = (char*)free_buffer + padding; | |
232 | } | |
233 | else { | |
234 | buffer = NULL; | |
235 | free_buffer = &buffer; /* marker for assertion */ | |
236 | } | |
237 | for (access_map = 0; | |
238 | access_map < nr_core_map_types; | |
239 | access_map++) { | |
240 | switch (access_map) { | |
241 | case core_read_map: | |
242 | if (access & access_read) | |
243 | core_map_attach(memory->map + access_map, | |
244 | attach, | |
245 | space, addr, nr_bytes, | |
246 | client, buffer, free_buffer); | |
247 | free_buffer = NULL; | |
248 | break; | |
249 | case core_write_map: | |
250 | if (access & access_write) | |
251 | core_map_attach(memory->map + access_map, | |
252 | attach, | |
253 | space, addr, nr_bytes, | |
254 | client, buffer, free_buffer); | |
255 | free_buffer = NULL; | |
256 | break; | |
257 | case core_execute_map: | |
258 | if (access & access_exec) | |
259 | core_map_attach(memory->map + access_map, | |
260 | attach, | |
261 | space, addr, nr_bytes, | |
262 | client, buffer, free_buffer); | |
263 | free_buffer = NULL; | |
264 | break; | |
265 | default: | |
266 | error("core_attach() internal error\n"); | |
267 | break; | |
268 | } | |
269 | } | |
270 | /* allocated buffer must attach to at least one thing */ | |
271 | ASSERT(free_buffer == NULL); | |
272 | } | |
273 | ||
274 | ||
275 | STATIC_INLINE_CORE\ | |
276 | (core_mapping *) | |
277 | core_map_find_mapping(core_map *map, | |
278 | unsigned_word addr, | |
279 | unsigned nr_bytes, | |
280 | cpu *processor, | |
281 | unsigned_word cia, | |
282 | int abort) /*either 0 or 1 - helps inline */ | |
283 | { | |
284 | core_mapping *mapping = map->first; | |
285 | ASSERT((addr & (nr_bytes - 1)) == 0); /* must be aligned */ | |
286 | ASSERT((addr + (nr_bytes - 1)) >= addr); /* must not wrap */ | |
287 | while (mapping != NULL) { | |
288 | if (addr >= mapping->base | |
289 | && (addr + (nr_bytes - 1)) <= mapping->bound) | |
290 | return mapping; | |
291 | mapping = mapping->next; | |
292 | } | |
293 | if (abort) | |
294 | error("core_find_mapping() - access to unmaped address, attach a default map to handle this - addr=0x%x nr_bytes=0x%x processor=0x%x cia=0x%x\n", | |
295 | addr, nr_bytes, processor, cia); | |
296 | return NULL; | |
297 | } | |
298 | ||
299 | ||
300 | STATIC_INLINE_CORE\ | |
301 | (void *) | |
302 | core_translate(core_mapping *mapping, | |
303 | unsigned_word addr) | |
304 | { | |
305 | return (void *)(((char *)mapping->buffer) + addr - mapping->base); | |
306 | } | |
307 | ||
308 | ||
309 | INLINE_CORE\ | |
310 | (unsigned) | |
311 | core_map_read_buffer(core_map *map, | |
312 | void *buffer, | |
313 | unsigned_word addr, | |
314 | unsigned len) | |
315 | { | |
316 | unsigned count = 0; | |
317 | while (count < len) { | |
318 | unsigned_word raddr = addr + count; | |
319 | core_mapping *mapping = | |
320 | core_map_find_mapping(map, | |
321 | raddr, 1, | |
322 | NULL, /*processor*/ | |
323 | 0, /*cia*/ | |
324 | 0); /*dont-abort*/ | |
325 | if (mapping == NULL) | |
326 | break; | |
327 | if (mapping->device != NULL) { | |
328 | int nr_bytes = len - count; | |
329 | if (raddr + nr_bytes - 1> mapping->bound) | |
330 | nr_bytes = mapping->bound - raddr + 1; | |
331 | if (device_io_read_buffer(mapping->device, | |
332 | (unsigned_1*)buffer + count, | |
333 | mapping->space, | |
334 | raddr, | |
335 | nr_bytes, | |
336 | 0, /*processor*/ | |
337 | 0 /*cpu*/) != nr_bytes) | |
338 | break; | |
339 | count += nr_bytes; | |
340 | } | |
341 | else { | |
342 | ((unsigned_1*)buffer)[count] = | |
343 | *(unsigned_1*)core_translate(mapping, raddr); | |
344 | count += 1; | |
345 | } | |
346 | } | |
347 | return count; | |
348 | } | |
349 | ||
350 | ||
351 | INLINE_CORE\ | |
352 | (unsigned) | |
353 | core_map_write_buffer(core_map *map, | |
354 | const void *buffer, | |
355 | unsigned_word addr, | |
356 | unsigned len) | |
357 | { | |
358 | unsigned count = 0; | |
359 | while (count < len) { | |
360 | unsigned_word raddr = addr + count; | |
361 | core_mapping *mapping = core_map_find_mapping(map, | |
362 | raddr, 1, | |
363 | NULL, /*processor*/ | |
364 | 0, /*cia*/ | |
365 | 0); /*dont-abort*/ | |
366 | if (mapping == NULL) | |
367 | break; | |
368 | if (mapping->device != NULL) { | |
369 | int nr_bytes = len - count; | |
370 | if (raddr + nr_bytes - 1 > mapping->bound) | |
371 | nr_bytes = mapping->bound - raddr + 1; | |
372 | if (device_io_write_buffer(mapping->device, | |
373 | (unsigned_1*)buffer + count, | |
374 | mapping->space, | |
375 | raddr, | |
376 | nr_bytes, | |
377 | 0, /*processor*/ | |
378 | 0 /*cpu*/) != nr_bytes) | |
379 | break; | |
380 | count += nr_bytes; | |
381 | } | |
382 | else { | |
383 | *(unsigned_1*)core_translate(mapping, raddr) = | |
384 | ((unsigned_1*)buffer)[count]; | |
385 | count += 1; | |
386 | } | |
387 | } | |
388 | return count; | |
389 | } | |
390 | ||
391 | ||
392 | /* define the read/write 1/2/4/8/word functions */ | |
393 | ||
394 | #define N 1 | |
395 | #include "corefile-n.h" | |
396 | #undef N | |
397 | ||
398 | #define N 2 | |
399 | #include "corefile-n.h" | |
400 | #undef N | |
401 | ||
402 | #define N 4 | |
403 | #include "corefile-n.h" | |
404 | #undef N | |
405 | ||
406 | #define N 8 | |
407 | #include "corefile-n.h" | |
408 | #undef N | |
409 | ||
410 | #define N word | |
411 | #include "corefile-n.h" | |
412 | #undef N | |
413 | ||
414 | #endif /* _CORE_C_ */ |