summaryrefslogtreecommitdiffstats
path: root/sound/isa/gus/gus_mem.c
blob: 2e23f2a8c62780a98801bac23fd64b48465a6f70 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
/*
 *  Copyright (c) by Jaroslav Kysela <perex@suse.cz>
 *  GUS's memory allocation routines / bottom layer
 *
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program; if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 *
 */

#include <sound/driver.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <sound/core.h>
#include <sound/gus.h>
#include <sound/info.h>

#ifdef CONFIG_SND_DEBUG
static void snd_gf1_mem_info_read(snd_info_entry_t *entry, 
				  snd_info_buffer_t * buffer);
#endif

void snd_gf1_mem_lock(snd_gf1_mem_t * alloc, int xup)
{
	if (!xup) {
		down(&alloc->memory_mutex);
	} else {
		up(&alloc->memory_mutex);
	}
}

static snd_gf1_mem_block_t *snd_gf1_mem_xalloc(snd_gf1_mem_t * alloc,
					       snd_gf1_mem_block_t * block)
{
	snd_gf1_mem_block_t *pblock, *nblock;

	nblock = (snd_gf1_mem_block_t *) kmalloc(sizeof(snd_gf1_mem_block_t), GFP_KERNEL);
	if (nblock == NULL)
		return NULL;
	*nblock = *block;
	pblock = alloc->first;
	while (pblock) {
		if (pblock->ptr > nblock->ptr) {
			nblock->prev = pblock->prev;
			nblock->next = pblock;
			pblock->prev = nblock;
			if (pblock == alloc->first)
				alloc->first = nblock;
			else
				nblock->prev->next = nblock;
			up(&alloc->memory_mutex);
			return NULL;
		}
		pblock = pblock->next;
	}
	nblock->next = NULL;
	if (alloc->last == NULL) {
		nblock->prev = NULL;
		alloc->first = alloc->last = nblock;
	} else {
		nblock->prev = alloc->last;
		alloc->last->next = nblock;
		alloc->last = nblock;
	}
	return nblock;
}

int snd_gf1_mem_xfree(snd_gf1_mem_t * alloc, snd_gf1_mem_block_t * block)
{
	if (block->share) {	/* ok.. shared block */
		block->share--;
		up(&alloc->memory_mutex);
		return 0;
	}
	if (alloc->first == block) {
		alloc->first = block->next;
		if (block->next)
			block->next->prev = NULL;
	} else {
		block->prev->next = block->next;
		if (block->next)
			block->next->prev = block->prev;
	}
	if (alloc->last == block) {
		alloc->last = block->prev;
		if (block->prev)
			block->prev->next = NULL;
	} else {
		block->next->prev = block->prev;
		if (block->prev)
			block->prev->next = block->next;
	}
	kfree(block->name);
	kfree(block);
	return 0;
}

static snd_gf1_mem_block_t *snd_gf1_mem_look(snd_gf1_mem_t * alloc,
					     unsigned int address)
{
	snd_gf1_mem_block_t *block;

	for (block = alloc->first; block; block = block->next) {
		if (block->ptr == address) {
			return block;
		}
	}
	return NULL;
}

static snd_gf1_mem_block_t *snd_gf1_mem_share(snd_gf1_mem_t * alloc,
					      unsigned int *share_id)
{
	snd_gf1_mem_block_t *block;

	if (!share_id[0] && !share_id[1] &&
	    !share_id[2] && !share_id[3])
		return NULL;
	for (block = alloc->first; block; block = block->next)
		if (!memcmp(share_id, block->share_id, sizeof(share_id)))
			return block;
	return NULL;
}

static int snd_gf1_mem_find(snd_gf1_mem_t * alloc,
			    snd_gf1_mem_block_t * block,
			    unsigned int size, int w_16, int align)
{
	snd_gf1_bank_info_t *info = w_16 ? alloc->banks_16 : alloc->banks_8;
	unsigned int idx, boundary;
	int size1;
	snd_gf1_mem_block_t *pblock;
	unsigned int ptr1, ptr2;

	align--;
	if (w_16 && align < 1)
		align = 1;
	block->flags = w_16 ? SNDRV_GF1_MEM_BLOCK_16BIT : 0;
	block->owner = SNDRV_GF1_MEM_OWNER_DRIVER;
	block->share = 0;
	block->share_id[0] = block->share_id[1] =
	block->share_id[2] = block->share_id[3] = 0;
	block->name = NULL;
	block->prev = block->next = NULL;
	for (pblock = alloc->first, idx = 0; pblock; pblock = pblock->next) {
		while (pblock->ptr >= (boundary = info[idx].address + info[idx].size))
			idx++;
		while (pblock->ptr + pblock->size >= (boundary = info[idx].address + info[idx].size))
			idx++;
		ptr2 = boundary;
		if (pblock->next) {
			if (pblock->ptr + pblock->size == pblock->next->ptr)
				continue;
			if (pblock->next->ptr < boundary)
				ptr2 = pblock->next->ptr;
		}
		ptr1 = (pblock->ptr + pblock->size + align) & ~align;
		if (ptr1 >= ptr2)
			continue;
		size1 = ptr2 - ptr1;
		if ((int)size <= size1) {
			block->ptr = ptr1;
			block->size = size;
			return 0;
		}
	}
	while (++idx < 4) {
		if (size <= info[idx].size) {
			/* I assume that bank address is already aligned.. */
			block->ptr = info[idx].address;
			block->size = size;
			return 0;
		}
	}
	return -ENOMEM;
}

snd_gf1_mem_block_t *snd_gf1_mem_alloc(snd_gf1_mem_t * alloc, int owner,
				       char *name, int size, int w_16, int align,
				       unsigned int *share_id)
{
	snd_gf1_mem_block_t block, *nblock;

	snd_gf1_mem_lock(alloc, 0);
	if (share_id != NULL) {
		nblock = snd_gf1_mem_share(alloc, share_id);
		if (nblock != NULL) {
			if (size != (int)nblock->size) {
				/* TODO: remove in the future */
				snd_printk(KERN_ERR "snd_gf1_mem_alloc - share: sizes differ\n");
				goto __std;
			}
			nblock->share++;
			snd_gf1_mem_lock(alloc, 1);
			return NULL;
		}
	}
      __std:
	if (snd_gf1_mem_find(alloc, &block, size, w_16, align) < 0) {
		snd_gf1_mem_lock(alloc, 1);
		return NULL;
	}
	if (share_id != NULL)
		memcpy(&block.share_id, share_id, sizeof(block.share_id));
	block.owner = owner;
	block.name = kstrdup(name, GFP_KERNEL);
	nblock = snd_gf1_mem_xalloc(alloc, &block);
	snd_gf1_mem_lock(alloc, 1);
	return nblock;
}

int snd_gf1_mem_free(snd_gf1_mem_t * alloc, unsigned int address)
{
	int result;
	snd_gf1_mem_block_t *block;

	snd_gf1_mem_lock(alloc, 0);
	if ((block = snd_gf1_mem_look(alloc, address)) != NULL) {
		result = snd_gf1_mem_xfree(alloc, block);
		snd_gf1_mem_lock(alloc, 1);
		return result;
	}
	snd_gf1_mem_lock(alloc, 1);
	return -EINVAL;
}

int snd_gf1_mem_init(snd_gus_card_t * gus)
{
	snd_gf1_mem_t *alloc;
	snd_gf1_mem_block_t block;
#ifdef CONFIG_SND_DEBUG
	snd_info_entry_t *entry;
#endif

	alloc = &gus->gf1.mem_alloc;
	init_MUTEX(&alloc->memory_mutex);
	alloc->first = alloc->last = NULL;
	if (!gus->gf1.memory)
		return 0;

	memset(&block, 0, sizeof(block));
	block.owner = SNDRV_GF1_MEM_OWNER_DRIVER;
	if (gus->gf1.enh_mode) {
		block.ptr = 0;
		block.size = 1024;
		block.name = kstrdup("InterWave LFOs", GFP_KERNEL);
		if (snd_gf1_mem_xalloc(alloc, &block) == NULL)
			return -ENOMEM;
	}
	block.ptr = gus->gf1.default_voice_address;
	block.size = 4;
	block.name = kstrdup("Voice default (NULL's)", GFP_KERNEL);
	if (snd_gf1_mem_xalloc(alloc, &block) == NULL)
		return -ENOMEM;
#ifdef CONFIG_SND_DEBUG
	if (! snd_card_proc_new(gus->card, "gusmem", &entry)) {
		snd_info_set_text_ops(entry, gus, 1024, snd_gf1_mem_info_read);
		entry->c.text.read_size = 256 * 1024;
	}
#endif
	return 0;
}

int snd_gf1_mem_done(snd_gus_card_t * gus)
{
	snd_gf1_mem_t *alloc;
	snd_gf1_mem_block_t *block, *nblock;

	alloc = &gus->gf1.mem_alloc;
	block = alloc->first;
	while (block) {
		nblock = block->next;
		snd_gf1_mem_xfree(alloc, block);
		block = nblock;
	}
	return 0;
}

#ifdef CONFIG_SND_DEBUG
static void snd_gf1_mem_info_read(snd_info_entry_t *entry, 
				  snd_info_buffer_t * buffer)
{
	snd_gus_card_t *gus;
	snd_gf1_mem_t *alloc;
	snd_gf1_mem_block_t *block;
	unsigned int total, used;
	int i;

	gus = entry->private_data;
	alloc = &gus->gf1.mem_alloc;
	down(&alloc->memory_mutex);
	snd_iprintf(buffer, "8-bit banks       : \n    ");
	for (i = 0; i < 4; i++)
		snd_iprintf(buffer, "0x%06x (%04ik)%s", alloc->banks_8[i].address, alloc->banks_8[i].size >> 10, i + 1 < 4 ? "," : "");
	snd_iprintf(buffer, "\n"
		    "16-bit banks      : \n    ");
	for (i = total = 0; i < 4; i++) {
		snd_iprintf(buffer, "0x%06x (%04ik)%s", alloc->banks_16[i].address, alloc->banks_16[i].size >> 10, i + 1 < 4 ? "," : "");
		total += alloc->banks_16[i].size;
	}
	snd_iprintf(buffer, "\n");
	used = 0;
	for (block = alloc->first, i = 0; block; block = block->next, i++) {
		used += block->size;
		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);
		if (block->share ||
		    block->share_id[0] || block->share_id[1] ||
		    block->share_id[2] || block->share_id[3])
			snd_iprintf(buffer, "  Share           : %i [id0 0x%x] [id1 0x%x] [id2 0x%x] [id3 0x%x]\n",
				block->share,
				block->share_id[0], block->share_id[1],
				block->share_id[2], block->share_id[3]);
		snd_iprintf(buffer, "  Flags           :%s\n",
		block->flags & SNDRV_GF1_MEM_BLOCK_16BIT ? " 16-bit" : "");
		snd_iprintf(buffer, "  Owner           : ");
		switch (block->owner) {
		case SNDRV_GF1_MEM_OWNER_DRIVER:
			snd_iprintf(buffer, "driver - %s\n", block->name);
			break;
		case SNDRV_GF1_MEM_OWNER_WAVE_SIMPLE:
			snd_iprintf(buffer, "SIMPLE wave\n");
			break;
		case SNDRV_GF1_MEM_OWNER_WAVE_GF1:
			snd_iprintf(buffer, "GF1 wave\n");
			break;
		case SNDRV_GF1_MEM_OWNER_WAVE_IWFFFF:
			snd_iprintf(buffer, "IWFFFF wave\n");
			break;
		default:
			snd_iprintf(buffer, "unknown\n");
		}
	}
	snd_iprintf(buffer, "  Total: memory = %i, used = %i, free = %i\n",
		    total, used, total - used);
	up(&alloc->memory_mutex);
#if 0
	ultra_iprintf(buffer, "  Verify: free = %i, max 8-bit block = %i, max 16-bit block = %i\n",
		      ultra_memory_free_size(card, &card->gf1.mem_alloc),
		  ultra_memory_free_block(card, &card->gf1.mem_alloc, 0),
		 ultra_memory_free_block(card, &card->gf1.mem_alloc, 1));
#endif
}
#endif