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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 | // SPDX-License-Identifier: GPL-2.0-or-later /* * Copyright (c) by Jaroslav Kysela <perex@perex.cz> * GUS's memory allocation routines / bottom layer */ #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(struct snd_info_entry *entry, struct snd_info_buffer *buffer); #endif void snd_gf1_mem_lock(struct snd_gf1_mem * alloc, int xup) { if (!xup) { mutex_lock(&alloc->memory_mutex); } else { mutex_unlock(&alloc->memory_mutex); } } static struct snd_gf1_mem_block * snd_gf1_mem_xalloc(struct snd_gf1_mem *alloc, struct snd_gf1_mem_block *block, const char *name) { struct snd_gf1_mem_block *pblock, *nblock; nblock = kmalloc(sizeof(struct snd_gf1_mem_block), GFP_KERNEL); if (nblock == NULL) return NULL; *nblock = *block; nblock->name = kstrdup(name, GFP_KERNEL); if (!nblock->name) { kfree(nblock); return NULL; } 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; mutex_unlock(&alloc->memory_mutex); return nblock; } 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(struct snd_gf1_mem * alloc, struct snd_gf1_mem_block * block) { if (block->share) { /* ok.. shared block */ block->share--; mutex_unlock(&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 struct snd_gf1_mem_block *snd_gf1_mem_look(struct snd_gf1_mem * alloc, unsigned int address) { struct snd_gf1_mem_block *block; for (block = alloc->first; block; block = block->next) { if (block->ptr == address) { return block; } } return NULL; } static struct snd_gf1_mem_block *snd_gf1_mem_share(struct snd_gf1_mem * alloc, unsigned int *share_id) { struct snd_gf1_mem_block *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(block->share_id))) return block; return NULL; } static int snd_gf1_mem_find(struct snd_gf1_mem * alloc, struct snd_gf1_mem_block * block, unsigned int size, int w_16, int align) { struct snd_gf1_bank_info *info = w_16 ? alloc->banks_16 : alloc->banks_8; unsigned int idx, boundary; int size1; struct snd_gf1_mem_block *pblock; unsigned int ptr1, ptr2; if (w_16 && align < 2) align = 2; 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 = ALIGN(pblock->ptr + pblock->size, 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; } struct snd_gf1_mem_block *snd_gf1_mem_alloc(struct snd_gf1_mem * alloc, int owner, char *name, int size, int w_16, int align, unsigned int *share_id) { struct snd_gf1_mem_block 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; nblock = snd_gf1_mem_xalloc(alloc, &block, name); snd_gf1_mem_lock(alloc, 1); return nblock; } int snd_gf1_mem_free(struct snd_gf1_mem * alloc, unsigned int address) { int result; struct snd_gf1_mem_block *block; snd_gf1_mem_lock(alloc, 0); block = snd_gf1_mem_look(alloc, address); if (block) { 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(struct snd_gus_card * gus) { struct snd_gf1_mem *alloc; struct snd_gf1_mem_block block; alloc = &gus->gf1.mem_alloc; mutex_init(&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; if (!snd_gf1_mem_xalloc(alloc, &block, "InterWave LFOs")) return -ENOMEM; } block.ptr = gus->gf1.default_voice_address; block.size = 4; if (!snd_gf1_mem_xalloc(alloc, &block, "Voice default (NULL's)")) return -ENOMEM; #ifdef CONFIG_SND_DEBUG snd_card_ro_proc_new(gus->card, "gusmem", gus, snd_gf1_mem_info_read); #endif return 0; } int snd_gf1_mem_done(struct snd_gus_card * gus) { struct snd_gf1_mem *alloc; struct snd_gf1_mem_block *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(struct snd_info_entry *entry, struct snd_info_buffer *buffer) { struct snd_gus_card *gus; struct snd_gf1_mem *alloc; struct snd_gf1_mem_block *block; unsigned int total, used; int i; gus = entry->private_data; alloc = &gus->gf1.mem_alloc; mutex_lock(&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 onboard 0x%x size %i (0x%x):\n", i, 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); mutex_unlock(&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 |