diff options
Diffstat (limited to 'sound/isa/gus/gus_mem.c')
| -rw-r--r-- | sound/isa/gus/gus_mem.c | 353 |
1 files changed, 353 insertions, 0 deletions
diff --git a/sound/isa/gus/gus_mem.c b/sound/isa/gus/gus_mem.c new file mode 100644 index 00000000000..bfc2b91001d --- /dev/null +++ b/sound/isa/gus/gus_mem.c @@ -0,0 +1,353 @@ +/* + * 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 <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); + } +} + +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; +} + +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; +} + +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("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 = snd_kmalloc_strdup(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 = snd_kmalloc_strdup("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 = snd_kmalloc_strdup("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 |