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1da177e4 LT |
1 | /* |
2 | * Copyright (c) by Jaroslav Kysela <perex@suse.cz> | |
3 | * GUS's memory allocation routines / bottom layer | |
4 | * | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
19 | * | |
20 | */ | |
21 | ||
22 | #include <sound/driver.h> | |
23 | #include <linux/slab.h> | |
24 | #include <sound/core.h> | |
25 | #include <sound/gus.h> | |
26 | #include <sound/info.h> | |
27 | ||
28 | #ifdef CONFIG_SND_DEBUG | |
29 | static void snd_gf1_mem_info_read(snd_info_entry_t *entry, | |
30 | snd_info_buffer_t * buffer); | |
31 | #endif | |
32 | ||
33 | void snd_gf1_mem_lock(snd_gf1_mem_t * alloc, int xup) | |
34 | { | |
35 | if (!xup) { | |
36 | down(&alloc->memory_mutex); | |
37 | } else { | |
38 | up(&alloc->memory_mutex); | |
39 | } | |
40 | } | |
41 | ||
209ac85d AB |
42 | static snd_gf1_mem_block_t *snd_gf1_mem_xalloc(snd_gf1_mem_t * alloc, |
43 | snd_gf1_mem_block_t * block) | |
1da177e4 LT |
44 | { |
45 | snd_gf1_mem_block_t *pblock, *nblock; | |
46 | ||
47 | nblock = (snd_gf1_mem_block_t *) kmalloc(sizeof(snd_gf1_mem_block_t), GFP_KERNEL); | |
48 | if (nblock == NULL) | |
49 | return NULL; | |
50 | *nblock = *block; | |
51 | pblock = alloc->first; | |
52 | while (pblock) { | |
53 | if (pblock->ptr > nblock->ptr) { | |
54 | nblock->prev = pblock->prev; | |
55 | nblock->next = pblock; | |
56 | pblock->prev = nblock; | |
57 | if (pblock == alloc->first) | |
58 | alloc->first = nblock; | |
59 | else | |
60 | nblock->prev->next = nblock; | |
61 | up(&alloc->memory_mutex); | |
62 | return NULL; | |
63 | } | |
64 | pblock = pblock->next; | |
65 | } | |
66 | nblock->next = NULL; | |
67 | if (alloc->last == NULL) { | |
68 | nblock->prev = NULL; | |
69 | alloc->first = alloc->last = nblock; | |
70 | } else { | |
71 | nblock->prev = alloc->last; | |
72 | alloc->last->next = nblock; | |
73 | alloc->last = nblock; | |
74 | } | |
75 | return nblock; | |
76 | } | |
77 | ||
78 | int snd_gf1_mem_xfree(snd_gf1_mem_t * alloc, snd_gf1_mem_block_t * block) | |
79 | { | |
80 | if (block->share) { /* ok.. shared block */ | |
81 | block->share--; | |
82 | up(&alloc->memory_mutex); | |
83 | return 0; | |
84 | } | |
85 | if (alloc->first == block) { | |
86 | alloc->first = block->next; | |
87 | if (block->next) | |
88 | block->next->prev = NULL; | |
89 | } else { | |
90 | block->prev->next = block->next; | |
91 | if (block->next) | |
92 | block->next->prev = block->prev; | |
93 | } | |
94 | if (alloc->last == block) { | |
95 | alloc->last = block->prev; | |
96 | if (block->prev) | |
97 | block->prev->next = NULL; | |
98 | } else { | |
99 | block->next->prev = block->prev; | |
100 | if (block->prev) | |
101 | block->prev->next = block->next; | |
102 | } | |
103 | kfree(block->name); | |
104 | kfree(block); | |
105 | return 0; | |
106 | } | |
107 | ||
209ac85d AB |
108 | static snd_gf1_mem_block_t *snd_gf1_mem_look(snd_gf1_mem_t * alloc, |
109 | unsigned int address) | |
1da177e4 LT |
110 | { |
111 | snd_gf1_mem_block_t *block; | |
112 | ||
113 | for (block = alloc->first; block; block = block->next) { | |
114 | if (block->ptr == address) { | |
115 | return block; | |
116 | } | |
117 | } | |
118 | return NULL; | |
119 | } | |
120 | ||
209ac85d AB |
121 | static snd_gf1_mem_block_t *snd_gf1_mem_share(snd_gf1_mem_t * alloc, |
122 | unsigned int *share_id) | |
1da177e4 LT |
123 | { |
124 | snd_gf1_mem_block_t *block; | |
125 | ||
126 | if (!share_id[0] && !share_id[1] && | |
127 | !share_id[2] && !share_id[3]) | |
128 | return NULL; | |
129 | for (block = alloc->first; block; block = block->next) | |
130 | if (!memcmp(share_id, block->share_id, sizeof(share_id))) | |
131 | return block; | |
132 | return NULL; | |
133 | } | |
134 | ||
135 | static int snd_gf1_mem_find(snd_gf1_mem_t * alloc, | |
136 | snd_gf1_mem_block_t * block, | |
137 | unsigned int size, int w_16, int align) | |
138 | { | |
139 | snd_gf1_bank_info_t *info = w_16 ? alloc->banks_16 : alloc->banks_8; | |
140 | unsigned int idx, boundary; | |
141 | int size1; | |
142 | snd_gf1_mem_block_t *pblock; | |
143 | unsigned int ptr1, ptr2; | |
144 | ||
145 | align--; | |
146 | if (w_16 && align < 1) | |
147 | align = 1; | |
148 | block->flags = w_16 ? SNDRV_GF1_MEM_BLOCK_16BIT : 0; | |
149 | block->owner = SNDRV_GF1_MEM_OWNER_DRIVER; | |
150 | block->share = 0; | |
151 | block->share_id[0] = block->share_id[1] = | |
152 | block->share_id[2] = block->share_id[3] = 0; | |
153 | block->name = NULL; | |
154 | block->prev = block->next = NULL; | |
155 | for (pblock = alloc->first, idx = 0; pblock; pblock = pblock->next) { | |
156 | while (pblock->ptr >= (boundary = info[idx].address + info[idx].size)) | |
157 | idx++; | |
158 | while (pblock->ptr + pblock->size >= (boundary = info[idx].address + info[idx].size)) | |
159 | idx++; | |
160 | ptr2 = boundary; | |
161 | if (pblock->next) { | |
162 | if (pblock->ptr + pblock->size == pblock->next->ptr) | |
163 | continue; | |
164 | if (pblock->next->ptr < boundary) | |
165 | ptr2 = pblock->next->ptr; | |
166 | } | |
167 | ptr1 = (pblock->ptr + pblock->size + align) & ~align; | |
168 | if (ptr1 >= ptr2) | |
169 | continue; | |
170 | size1 = ptr2 - ptr1; | |
171 | if ((int)size <= size1) { | |
172 | block->ptr = ptr1; | |
173 | block->size = size; | |
174 | return 0; | |
175 | } | |
176 | } | |
177 | while (++idx < 4) { | |
178 | if (size <= info[idx].size) { | |
179 | /* I assume that bank address is already aligned.. */ | |
180 | block->ptr = info[idx].address; | |
181 | block->size = size; | |
182 | return 0; | |
183 | } | |
184 | } | |
185 | return -ENOMEM; | |
186 | } | |
187 | ||
188 | snd_gf1_mem_block_t *snd_gf1_mem_alloc(snd_gf1_mem_t * alloc, int owner, | |
189 | char *name, int size, int w_16, int align, | |
190 | unsigned int *share_id) | |
191 | { | |
192 | snd_gf1_mem_block_t block, *nblock; | |
193 | ||
194 | snd_gf1_mem_lock(alloc, 0); | |
195 | if (share_id != NULL) { | |
196 | nblock = snd_gf1_mem_share(alloc, share_id); | |
197 | if (nblock != NULL) { | |
198 | if (size != (int)nblock->size) { | |
199 | /* TODO: remove in the future */ | |
200 | snd_printk("snd_gf1_mem_alloc - share: sizes differ\n"); | |
201 | goto __std; | |
202 | } | |
203 | nblock->share++; | |
204 | snd_gf1_mem_lock(alloc, 1); | |
205 | return NULL; | |
206 | } | |
207 | } | |
208 | __std: | |
209 | if (snd_gf1_mem_find(alloc, &block, size, w_16, align) < 0) { | |
210 | snd_gf1_mem_lock(alloc, 1); | |
211 | return NULL; | |
212 | } | |
213 | if (share_id != NULL) | |
214 | memcpy(&block.share_id, share_id, sizeof(block.share_id)); | |
215 | block.owner = owner; | |
216 | block.name = snd_kmalloc_strdup(name, GFP_KERNEL); | |
217 | nblock = snd_gf1_mem_xalloc(alloc, &block); | |
218 | snd_gf1_mem_lock(alloc, 1); | |
219 | return nblock; | |
220 | } | |
221 | ||
222 | int snd_gf1_mem_free(snd_gf1_mem_t * alloc, unsigned int address) | |
223 | { | |
224 | int result; | |
225 | snd_gf1_mem_block_t *block; | |
226 | ||
227 | snd_gf1_mem_lock(alloc, 0); | |
228 | if ((block = snd_gf1_mem_look(alloc, address)) != NULL) { | |
229 | result = snd_gf1_mem_xfree(alloc, block); | |
230 | snd_gf1_mem_lock(alloc, 1); | |
231 | return result; | |
232 | } | |
233 | snd_gf1_mem_lock(alloc, 1); | |
234 | return -EINVAL; | |
235 | } | |
236 | ||
237 | int snd_gf1_mem_init(snd_gus_card_t * gus) | |
238 | { | |
239 | snd_gf1_mem_t *alloc; | |
240 | snd_gf1_mem_block_t block; | |
241 | #ifdef CONFIG_SND_DEBUG | |
242 | snd_info_entry_t *entry; | |
243 | #endif | |
244 | ||
245 | alloc = &gus->gf1.mem_alloc; | |
246 | init_MUTEX(&alloc->memory_mutex); | |
247 | alloc->first = alloc->last = NULL; | |
248 | if (!gus->gf1.memory) | |
249 | return 0; | |
250 | ||
251 | memset(&block, 0, sizeof(block)); | |
252 | block.owner = SNDRV_GF1_MEM_OWNER_DRIVER; | |
253 | if (gus->gf1.enh_mode) { | |
254 | block.ptr = 0; | |
255 | block.size = 1024; | |
256 | block.name = snd_kmalloc_strdup("InterWave LFOs", GFP_KERNEL); | |
257 | if (snd_gf1_mem_xalloc(alloc, &block) == NULL) | |
258 | return -ENOMEM; | |
259 | } | |
260 | block.ptr = gus->gf1.default_voice_address; | |
261 | block.size = 4; | |
262 | block.name = snd_kmalloc_strdup("Voice default (NULL's)", GFP_KERNEL); | |
263 | if (snd_gf1_mem_xalloc(alloc, &block) == NULL) | |
264 | return -ENOMEM; | |
265 | #ifdef CONFIG_SND_DEBUG | |
266 | if (! snd_card_proc_new(gus->card, "gusmem", &entry)) { | |
267 | snd_info_set_text_ops(entry, gus, 1024, snd_gf1_mem_info_read); | |
268 | entry->c.text.read_size = 256 * 1024; | |
269 | } | |
270 | #endif | |
271 | return 0; | |
272 | } | |
273 | ||
274 | int snd_gf1_mem_done(snd_gus_card_t * gus) | |
275 | { | |
276 | snd_gf1_mem_t *alloc; | |
277 | snd_gf1_mem_block_t *block, *nblock; | |
278 | ||
279 | alloc = &gus->gf1.mem_alloc; | |
280 | block = alloc->first; | |
281 | while (block) { | |
282 | nblock = block->next; | |
283 | snd_gf1_mem_xfree(alloc, block); | |
284 | block = nblock; | |
285 | } | |
286 | return 0; | |
287 | } | |
288 | ||
289 | #ifdef CONFIG_SND_DEBUG | |
290 | static void snd_gf1_mem_info_read(snd_info_entry_t *entry, | |
291 | snd_info_buffer_t * buffer) | |
292 | { | |
293 | snd_gus_card_t *gus; | |
294 | snd_gf1_mem_t *alloc; | |
295 | snd_gf1_mem_block_t *block; | |
296 | unsigned int total, used; | |
297 | int i; | |
298 | ||
299 | gus = entry->private_data; | |
300 | alloc = &gus->gf1.mem_alloc; | |
301 | down(&alloc->memory_mutex); | |
302 | snd_iprintf(buffer, "8-bit banks : \n "); | |
303 | for (i = 0; i < 4; i++) | |
304 | snd_iprintf(buffer, "0x%06x (%04ik)%s", alloc->banks_8[i].address, alloc->banks_8[i].size >> 10, i + 1 < 4 ? "," : ""); | |
305 | snd_iprintf(buffer, "\n" | |
306 | "16-bit banks : \n "); | |
307 | for (i = total = 0; i < 4; i++) { | |
308 | snd_iprintf(buffer, "0x%06x (%04ik)%s", alloc->banks_16[i].address, alloc->banks_16[i].size >> 10, i + 1 < 4 ? "," : ""); | |
309 | total += alloc->banks_16[i].size; | |
310 | } | |
311 | snd_iprintf(buffer, "\n"); | |
312 | used = 0; | |
313 | for (block = alloc->first, i = 0; block; block = block->next, i++) { | |
314 | used += block->size; | |
315 | snd_iprintf(buffer, "Block %i at 0x%lx onboard 0x%x size %i (0x%x):\n", i, (long) block, block->ptr, block->size, block->size); | |
316 | if (block->share || | |
317 | block->share_id[0] || block->share_id[1] || | |
318 | block->share_id[2] || block->share_id[3]) | |
319 | snd_iprintf(buffer, " Share : %i [id0 0x%x] [id1 0x%x] [id2 0x%x] [id3 0x%x]\n", | |
320 | block->share, | |
321 | block->share_id[0], block->share_id[1], | |
322 | block->share_id[2], block->share_id[3]); | |
323 | snd_iprintf(buffer, " Flags :%s\n", | |
324 | block->flags & SNDRV_GF1_MEM_BLOCK_16BIT ? " 16-bit" : ""); | |
325 | snd_iprintf(buffer, " Owner : "); | |
326 | switch (block->owner) { | |
327 | case SNDRV_GF1_MEM_OWNER_DRIVER: | |
328 | snd_iprintf(buffer, "driver - %s\n", block->name); | |
329 | break; | |
330 | case SNDRV_GF1_MEM_OWNER_WAVE_SIMPLE: | |
331 | snd_iprintf(buffer, "SIMPLE wave\n"); | |
332 | break; | |
333 | case SNDRV_GF1_MEM_OWNER_WAVE_GF1: | |
334 | snd_iprintf(buffer, "GF1 wave\n"); | |
335 | break; | |
336 | case SNDRV_GF1_MEM_OWNER_WAVE_IWFFFF: | |
337 | snd_iprintf(buffer, "IWFFFF wave\n"); | |
338 | break; | |
339 | default: | |
340 | snd_iprintf(buffer, "unknown\n"); | |
341 | } | |
342 | } | |
343 | snd_iprintf(buffer, " Total: memory = %i, used = %i, free = %i\n", | |
344 | total, used, total - used); | |
345 | up(&alloc->memory_mutex); | |
346 | #if 0 | |
347 | ultra_iprintf(buffer, " Verify: free = %i, max 8-bit block = %i, max 16-bit block = %i\n", | |
348 | ultra_memory_free_size(card, &card->gf1.mem_alloc), | |
349 | ultra_memory_free_block(card, &card->gf1.mem_alloc, 0), | |
350 | ultra_memory_free_block(card, &card->gf1.mem_alloc, 1)); | |
351 | #endif | |
352 | } | |
353 | #endif |