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22#include <linux/slab.h>
23#include <linux/string.h>
24#include <sound/core.h>
25#include <sound/gus.h>
26#include <sound/info.h>
27
28#ifdef CONFIG_SND_DEBUG
29static void snd_gf1_mem_info_read(struct snd_info_entry *entry,
30 struct snd_info_buffer *buffer);
31#endif
32
33void snd_gf1_mem_lock(struct snd_gf1_mem * alloc, int xup)
34{
35 if (!xup) {
36 mutex_lock(&alloc->memory_mutex);
37 } else {
38 mutex_unlock(&alloc->memory_mutex);
39 }
40}
41
42static struct snd_gf1_mem_block *snd_gf1_mem_xalloc(struct snd_gf1_mem * alloc,
43 struct snd_gf1_mem_block * block)
44{
45 struct snd_gf1_mem_block *pblock, *nblock;
46
47 nblock = kmalloc(sizeof(struct snd_gf1_mem_block), 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 mutex_unlock(&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
78int snd_gf1_mem_xfree(struct snd_gf1_mem * alloc, struct snd_gf1_mem_block * block)
79{
80 if (block->share) {
81 block->share--;
82 mutex_unlock(&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
108static struct snd_gf1_mem_block *snd_gf1_mem_look(struct snd_gf1_mem * alloc,
109 unsigned int address)
110{
111 struct snd_gf1_mem_block *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
121static struct snd_gf1_mem_block *snd_gf1_mem_share(struct snd_gf1_mem * alloc,
122 unsigned int *share_id)
123{
124 struct snd_gf1_mem_block *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
135static int snd_gf1_mem_find(struct snd_gf1_mem * alloc,
136 struct snd_gf1_mem_block * block,
137 unsigned int size, int w_16, int align)
138{
139 struct snd_gf1_bank_info *info = w_16 ? alloc->banks_16 : alloc->banks_8;
140 unsigned int idx, boundary;
141 int size1;
142 struct snd_gf1_mem_block *pblock;
143 unsigned int ptr1, ptr2;
144
145 if (w_16 && align < 2)
146 align = 2;
147 block->flags = w_16 ? SNDRV_GF1_MEM_BLOCK_16BIT : 0;
148 block->owner = SNDRV_GF1_MEM_OWNER_DRIVER;
149 block->share = 0;
150 block->share_id[0] = block->share_id[1] =
151 block->share_id[2] = block->share_id[3] = 0;
152 block->name = NULL;
153 block->prev = block->next = NULL;
154 for (pblock = alloc->first, idx = 0; pblock; pblock = pblock->next) {
155 while (pblock->ptr >= (boundary = info[idx].address + info[idx].size))
156 idx++;
157 while (pblock->ptr + pblock->size >= (boundary = info[idx].address + info[idx].size))
158 idx++;
159 ptr2 = boundary;
160 if (pblock->next) {
161 if (pblock->ptr + pblock->size == pblock->next->ptr)
162 continue;
163 if (pblock->next->ptr < boundary)
164 ptr2 = pblock->next->ptr;
165 }
166 ptr1 = ALIGN(pblock->ptr + pblock->size, align);
167 if (ptr1 >= ptr2)
168 continue;
169 size1 = ptr2 - ptr1;
170 if ((int)size <= size1) {
171 block->ptr = ptr1;
172 block->size = size;
173 return 0;
174 }
175 }
176 while (++idx < 4) {
177 if (size <= info[idx].size) {
178
179 block->ptr = info[idx].address;
180 block->size = size;
181 return 0;
182 }
183 }
184 return -ENOMEM;
185}
186
187struct snd_gf1_mem_block *snd_gf1_mem_alloc(struct snd_gf1_mem * alloc, int owner,
188 char *name, int size, int w_16, int align,
189 unsigned int *share_id)
190{
191 struct snd_gf1_mem_block block, *nblock;
192
193 snd_gf1_mem_lock(alloc, 0);
194 if (share_id != NULL) {
195 nblock = snd_gf1_mem_share(alloc, share_id);
196 if (nblock != NULL) {
197 if (size != (int)nblock->size) {
198
199 snd_printk(KERN_ERR "snd_gf1_mem_alloc - share: sizes differ\n");
200 goto __std;
201 }
202 nblock->share++;
203 snd_gf1_mem_lock(alloc, 1);
204 return NULL;
205 }
206 }
207 __std:
208 if (snd_gf1_mem_find(alloc, &block, size, w_16, align) < 0) {
209 snd_gf1_mem_lock(alloc, 1);
210 return NULL;
211 }
212 if (share_id != NULL)
213 memcpy(&block.share_id, share_id, sizeof(block.share_id));
214 block.owner = owner;
215 block.name = kstrdup(name, GFP_KERNEL);
216 nblock = snd_gf1_mem_xalloc(alloc, &block);
217 snd_gf1_mem_lock(alloc, 1);
218 return nblock;
219}
220
221int snd_gf1_mem_free(struct snd_gf1_mem * alloc, unsigned int address)
222{
223 int result;
224 struct snd_gf1_mem_block *block;
225
226 snd_gf1_mem_lock(alloc, 0);
227 if ((block = snd_gf1_mem_look(alloc, address)) != NULL) {
228 result = snd_gf1_mem_xfree(alloc, block);
229 snd_gf1_mem_lock(alloc, 1);
230 return result;
231 }
232 snd_gf1_mem_lock(alloc, 1);
233 return -EINVAL;
234}
235
236int snd_gf1_mem_init(struct snd_gus_card * gus)
237{
238 struct snd_gf1_mem *alloc;
239 struct snd_gf1_mem_block block;
240#ifdef CONFIG_SND_DEBUG
241 struct snd_info_entry *entry;
242#endif
243
244 alloc = &gus->gf1.mem_alloc;
245 mutex_init(&alloc->memory_mutex);
246 alloc->first = alloc->last = NULL;
247 if (!gus->gf1.memory)
248 return 0;
249
250 memset(&block, 0, sizeof(block));
251 block.owner = SNDRV_GF1_MEM_OWNER_DRIVER;
252 if (gus->gf1.enh_mode) {
253 block.ptr = 0;
254 block.size = 1024;
255 block.name = kstrdup("InterWave LFOs", GFP_KERNEL);
256 if (snd_gf1_mem_xalloc(alloc, &block) == NULL)
257 return -ENOMEM;
258 }
259 block.ptr = gus->gf1.default_voice_address;
260 block.size = 4;
261 block.name = kstrdup("Voice default (NULL's)", GFP_KERNEL);
262 if (snd_gf1_mem_xalloc(alloc, &block) == NULL)
263 return -ENOMEM;
264#ifdef CONFIG_SND_DEBUG
265 if (! snd_card_proc_new(gus->card, "gusmem", &entry))
266 snd_info_set_text_ops(entry, gus, snd_gf1_mem_info_read);
267#endif
268 return 0;
269}
270
271int snd_gf1_mem_done(struct snd_gus_card * gus)
272{
273 struct snd_gf1_mem *alloc;
274 struct snd_gf1_mem_block *block, *nblock;
275
276 alloc = &gus->gf1.mem_alloc;
277 block = alloc->first;
278 while (block) {
279 nblock = block->next;
280 snd_gf1_mem_xfree(alloc, block);
281 block = nblock;
282 }
283 return 0;
284}
285
286#ifdef CONFIG_SND_DEBUG
287static void snd_gf1_mem_info_read(struct snd_info_entry *entry,
288 struct snd_info_buffer *buffer)
289{
290 struct snd_gus_card *gus;
291 struct snd_gf1_mem *alloc;
292 struct snd_gf1_mem_block *block;
293 unsigned int total, used;
294 int i;
295
296 gus = entry->private_data;
297 alloc = &gus->gf1.mem_alloc;
298 mutex_lock(&alloc->memory_mutex);
299 snd_iprintf(buffer, "8-bit banks : \n ");
300 for (i = 0; i < 4; i++)
301 snd_iprintf(buffer, "0x%06x (%04ik)%s", alloc->banks_8[i].address, alloc->banks_8[i].size >> 10, i + 1 < 4 ? "," : "");
302 snd_iprintf(buffer, "\n"
303 "16-bit banks : \n ");
304 for (i = total = 0; i < 4; i++) {
305 snd_iprintf(buffer, "0x%06x (%04ik)%s", alloc->banks_16[i].address, alloc->banks_16[i].size >> 10, i + 1 < 4 ? "," : "");
306 total += alloc->banks_16[i].size;
307 }
308 snd_iprintf(buffer, "\n");
309 used = 0;
310 for (block = alloc->first, i = 0; block; block = block->next, i++) {
311 used += block->size;
312 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);
313 if (block->share ||
314 block->share_id[0] || block->share_id[1] ||
315 block->share_id[2] || block->share_id[3])
316 snd_iprintf(buffer, " Share : %i [id0 0x%x] [id1 0x%x] [id2 0x%x] [id3 0x%x]\n",
317 block->share,
318 block->share_id[0], block->share_id[1],
319 block->share_id[2], block->share_id[3]);
320 snd_iprintf(buffer, " Flags :%s\n",
321 block->flags & SNDRV_GF1_MEM_BLOCK_16BIT ? " 16-bit" : "");
322 snd_iprintf(buffer, " Owner : ");
323 switch (block->owner) {
324 case SNDRV_GF1_MEM_OWNER_DRIVER:
325 snd_iprintf(buffer, "driver - %s\n", block->name);
326 break;
327 case SNDRV_GF1_MEM_OWNER_WAVE_SIMPLE:
328 snd_iprintf(buffer, "SIMPLE wave\n");
329 break;
330 case SNDRV_GF1_MEM_OWNER_WAVE_GF1:
331 snd_iprintf(buffer, "GF1 wave\n");
332 break;
333 case SNDRV_GF1_MEM_OWNER_WAVE_IWFFFF:
334 snd_iprintf(buffer, "IWFFFF wave\n");
335 break;
336 default:
337 snd_iprintf(buffer, "unknown\n");
338 }
339 }
340 snd_iprintf(buffer, " Total: memory = %i, used = %i, free = %i\n",
341 total, used, total - used);
342 mutex_unlock(&alloc->memory_mutex);
343#if 0
344 ultra_iprintf(buffer, " Verify: free = %i, max 8-bit block = %i, max 16-bit block = %i\n",
345 ultra_memory_free_size(card, &card->gf1.mem_alloc),
346 ultra_memory_free_block(card, &card->gf1.mem_alloc, 0),
347 ultra_memory_free_block(card, &card->gf1.mem_alloc, 1));
348#endif
349}
350#endif
351
