1
2
3
4
5
6
7#include <linux/slab.h>
8#include <linux/string.h>
9#include <sound/core.h>
10#include <sound/gus.h>
11#include <sound/info.h>
12
13#ifdef CONFIG_SND_DEBUG
14static void snd_gf1_mem_info_read(struct snd_info_entry *entry,
15 struct snd_info_buffer *buffer);
16#endif
17
18void snd_gf1_mem_lock(struct snd_gf1_mem * alloc, int xup)
19{
20 if (!xup) {
21 mutex_lock(&alloc->memory_mutex);
22 } else {
23 mutex_unlock(&alloc->memory_mutex);
24 }
25}
26
27static struct snd_gf1_mem_block *snd_gf1_mem_xalloc(struct snd_gf1_mem * alloc,
28 struct snd_gf1_mem_block * block)
29{
30 struct snd_gf1_mem_block *pblock, *nblock;
31
32 nblock = kmalloc(sizeof(struct snd_gf1_mem_block), GFP_KERNEL);
33 if (nblock == NULL)
34 return NULL;
35 *nblock = *block;
36 pblock = alloc->first;
37 while (pblock) {
38 if (pblock->ptr > nblock->ptr) {
39 nblock->prev = pblock->prev;
40 nblock->next = pblock;
41 pblock->prev = nblock;
42 if (pblock == alloc->first)
43 alloc->first = nblock;
44 else
45 nblock->prev->next = nblock;
46 mutex_unlock(&alloc->memory_mutex);
47 return NULL;
48 }
49 pblock = pblock->next;
50 }
51 nblock->next = NULL;
52 if (alloc->last == NULL) {
53 nblock->prev = NULL;
54 alloc->first = alloc->last = nblock;
55 } else {
56 nblock->prev = alloc->last;
57 alloc->last->next = nblock;
58 alloc->last = nblock;
59 }
60 return nblock;
61}
62
63int snd_gf1_mem_xfree(struct snd_gf1_mem * alloc, struct snd_gf1_mem_block * block)
64{
65 if (block->share) {
66 block->share--;
67 mutex_unlock(&alloc->memory_mutex);
68 return 0;
69 }
70 if (alloc->first == block) {
71 alloc->first = block->next;
72 if (block->next)
73 block->next->prev = NULL;
74 } else {
75 block->prev->next = block->next;
76 if (block->next)
77 block->next->prev = block->prev;
78 }
79 if (alloc->last == block) {
80 alloc->last = block->prev;
81 if (block->prev)
82 block->prev->next = NULL;
83 } else {
84 block->next->prev = block->prev;
85 if (block->prev)
86 block->prev->next = block->next;
87 }
88 kfree(block->name);
89 kfree(block);
90 return 0;
91}
92
93static struct snd_gf1_mem_block *snd_gf1_mem_look(struct snd_gf1_mem * alloc,
94 unsigned int address)
95{
96 struct snd_gf1_mem_block *block;
97
98 for (block = alloc->first; block; block = block->next) {
99 if (block->ptr == address) {
100 return block;
101 }
102 }
103 return NULL;
104}
105
106static struct snd_gf1_mem_block *snd_gf1_mem_share(struct snd_gf1_mem * alloc,
107 unsigned int *share_id)
108{
109 struct snd_gf1_mem_block *block;
110
111 if (!share_id[0] && !share_id[1] &&
112 !share_id[2] && !share_id[3])
113 return NULL;
114 for (block = alloc->first; block; block = block->next)
115 if (!memcmp(share_id, block->share_id,
116 sizeof(block->share_id)))
117 return block;
118 return NULL;
119}
120
121static int snd_gf1_mem_find(struct snd_gf1_mem * alloc,
122 struct snd_gf1_mem_block * block,
123 unsigned int size, int w_16, int align)
124{
125 struct snd_gf1_bank_info *info = w_16 ? alloc->banks_16 : alloc->banks_8;
126 unsigned int idx, boundary;
127 int size1;
128 struct snd_gf1_mem_block *pblock;
129 unsigned int ptr1, ptr2;
130
131 if (w_16 && align < 2)
132 align = 2;
133 block->flags = w_16 ? SNDRV_GF1_MEM_BLOCK_16BIT : 0;
134 block->owner = SNDRV_GF1_MEM_OWNER_DRIVER;
135 block->share = 0;
136 block->share_id[0] = block->share_id[1] =
137 block->share_id[2] = block->share_id[3] = 0;
138 block->name = NULL;
139 block->prev = block->next = NULL;
140 for (pblock = alloc->first, idx = 0; pblock; pblock = pblock->next) {
141 while (pblock->ptr >= (boundary = info[idx].address + info[idx].size))
142 idx++;
143 while (pblock->ptr + pblock->size >= (boundary = info[idx].address + info[idx].size))
144 idx++;
145 ptr2 = boundary;
146 if (pblock->next) {
147 if (pblock->ptr + pblock->size == pblock->next->ptr)
148 continue;
149 if (pblock->next->ptr < boundary)
150 ptr2 = pblock->next->ptr;
151 }
152 ptr1 = ALIGN(pblock->ptr + pblock->size, align);
153 if (ptr1 >= ptr2)
154 continue;
155 size1 = ptr2 - ptr1;
156 if ((int)size <= size1) {
157 block->ptr = ptr1;
158 block->size = size;
159 return 0;
160 }
161 }
162 while (++idx < 4) {
163 if (size <= info[idx].size) {
164
165 block->ptr = info[idx].address;
166 block->size = size;
167 return 0;
168 }
169 }
170 return -ENOMEM;
171}
172
173struct snd_gf1_mem_block *snd_gf1_mem_alloc(struct snd_gf1_mem * alloc, int owner,
174 char *name, int size, int w_16, int align,
175 unsigned int *share_id)
176{
177 struct snd_gf1_mem_block block, *nblock;
178
179 snd_gf1_mem_lock(alloc, 0);
180 if (share_id != NULL) {
181 nblock = snd_gf1_mem_share(alloc, share_id);
182 if (nblock != NULL) {
183 if (size != (int)nblock->size) {
184
185 snd_printk(KERN_ERR "snd_gf1_mem_alloc - share: sizes differ\n");
186 goto __std;
187 }
188 nblock->share++;
189 snd_gf1_mem_lock(alloc, 1);
190 return NULL;
191 }
192 }
193 __std:
194 if (snd_gf1_mem_find(alloc, &block, size, w_16, align) < 0) {
195 snd_gf1_mem_lock(alloc, 1);
196 return NULL;
197 }
198 if (share_id != NULL)
199 memcpy(&block.share_id, share_id, sizeof(block.share_id));
200 block.owner = owner;
201 block.name = kstrdup(name, GFP_KERNEL);
202 nblock = snd_gf1_mem_xalloc(alloc, &block);
203 snd_gf1_mem_lock(alloc, 1);
204 return nblock;
205}
206
207int snd_gf1_mem_free(struct snd_gf1_mem * alloc, unsigned int address)
208{
209 int result;
210 struct snd_gf1_mem_block *block;
211
212 snd_gf1_mem_lock(alloc, 0);
213 block = snd_gf1_mem_look(alloc, address);
214 if (block) {
215 result = snd_gf1_mem_xfree(alloc, block);
216 snd_gf1_mem_lock(alloc, 1);
217 return result;
218 }
219 snd_gf1_mem_lock(alloc, 1);
220 return -EINVAL;
221}
222
223int snd_gf1_mem_init(struct snd_gus_card * gus)
224{
225 struct snd_gf1_mem *alloc;
226 struct snd_gf1_mem_block block;
227
228 alloc = &gus->gf1.mem_alloc;
229 mutex_init(&alloc->memory_mutex);
230 alloc->first = alloc->last = NULL;
231 if (!gus->gf1.memory)
232 return 0;
233
234 memset(&block, 0, sizeof(block));
235 block.owner = SNDRV_GF1_MEM_OWNER_DRIVER;
236 if (gus->gf1.enh_mode) {
237 block.ptr = 0;
238 block.size = 1024;
239 block.name = kstrdup("InterWave LFOs", GFP_KERNEL);
240 if (snd_gf1_mem_xalloc(alloc, &block) == NULL)
241 return -ENOMEM;
242 }
243 block.ptr = gus->gf1.default_voice_address;
244 block.size = 4;
245 block.name = kstrdup("Voice default (NULL's)", GFP_KERNEL);
246 if (snd_gf1_mem_xalloc(alloc, &block) == NULL)
247 return -ENOMEM;
248#ifdef CONFIG_SND_DEBUG
249 snd_card_ro_proc_new(gus->card, "gusmem", gus, snd_gf1_mem_info_read);
250#endif
251 return 0;
252}
253
254int snd_gf1_mem_done(struct snd_gus_card * gus)
255{
256 struct snd_gf1_mem *alloc;
257 struct snd_gf1_mem_block *block, *nblock;
258
259 alloc = &gus->gf1.mem_alloc;
260 block = alloc->first;
261 while (block) {
262 nblock = block->next;
263 snd_gf1_mem_xfree(alloc, block);
264 block = nblock;
265 }
266 return 0;
267}
268
269#ifdef CONFIG_SND_DEBUG
270static void snd_gf1_mem_info_read(struct snd_info_entry *entry,
271 struct snd_info_buffer *buffer)
272{
273 struct snd_gus_card *gus;
274 struct snd_gf1_mem *alloc;
275 struct snd_gf1_mem_block *block;
276 unsigned int total, used;
277 int i;
278
279 gus = entry->private_data;
280 alloc = &gus->gf1.mem_alloc;
281 mutex_lock(&alloc->memory_mutex);
282 snd_iprintf(buffer, "8-bit banks : \n ");
283 for (i = 0; i < 4; i++)
284 snd_iprintf(buffer, "0x%06x (%04ik)%s", alloc->banks_8[i].address, alloc->banks_8[i].size >> 10, i + 1 < 4 ? "," : "");
285 snd_iprintf(buffer, "\n"
286 "16-bit banks : \n ");
287 for (i = total = 0; i < 4; i++) {
288 snd_iprintf(buffer, "0x%06x (%04ik)%s", alloc->banks_16[i].address, alloc->banks_16[i].size >> 10, i + 1 < 4 ? "," : "");
289 total += alloc->banks_16[i].size;
290 }
291 snd_iprintf(buffer, "\n");
292 used = 0;
293 for (block = alloc->first, i = 0; block; block = block->next, i++) {
294 used += block->size;
295 snd_iprintf(buffer, "Block %i onboard 0x%x size %i (0x%x):\n", i, block->ptr, block->size, block->size);
296 if (block->share ||
297 block->share_id[0] || block->share_id[1] ||
298 block->share_id[2] || block->share_id[3])
299 snd_iprintf(buffer, " Share : %i [id0 0x%x] [id1 0x%x] [id2 0x%x] [id3 0x%x]\n",
300 block->share,
301 block->share_id[0], block->share_id[1],
302 block->share_id[2], block->share_id[3]);
303 snd_iprintf(buffer, " Flags :%s\n",
304 block->flags & SNDRV_GF1_MEM_BLOCK_16BIT ? " 16-bit" : "");
305 snd_iprintf(buffer, " Owner : ");
306 switch (block->owner) {
307 case SNDRV_GF1_MEM_OWNER_DRIVER:
308 snd_iprintf(buffer, "driver - %s\n", block->name);
309 break;
310 case SNDRV_GF1_MEM_OWNER_WAVE_SIMPLE:
311 snd_iprintf(buffer, "SIMPLE wave\n");
312 break;
313 case SNDRV_GF1_MEM_OWNER_WAVE_GF1:
314 snd_iprintf(buffer, "GF1 wave\n");
315 break;
316 case SNDRV_GF1_MEM_OWNER_WAVE_IWFFFF:
317 snd_iprintf(buffer, "IWFFFF wave\n");
318 break;
319 default:
320 snd_iprintf(buffer, "unknown\n");
321 }
322 }
323 snd_iprintf(buffer, " Total: memory = %i, used = %i, free = %i\n",
324 total, used, total - used);
325 mutex_unlock(&alloc->memory_mutex);
326#if 0
327 ultra_iprintf(buffer, " Verify: free = %i, max 8-bit block = %i, max 16-bit block = %i\n",
328 ultra_memory_free_size(card, &card->gf1.mem_alloc),
329 ultra_memory_free_block(card, &card->gf1.mem_alloc, 0),
330 ultra_memory_free_block(card, &card->gf1.mem_alloc, 1));
331#endif
332}
333#endif
334
