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337 lines
8.9 KiB
337 lines
8.9 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* Copyright (c) by Jaroslav Kysela <[email protected]> |
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* GUS's memory allocation routines / bottom layer |
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*/ |
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#include <linux/slab.h> |
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#include <linux/string.h> |
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#include <sound/core.h> |
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#include <sound/gus.h> |
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#include <sound/info.h> |
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#ifdef CONFIG_SND_DEBUG |
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static void snd_gf1_mem_info_read(struct snd_info_entry *entry, |
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struct snd_info_buffer *buffer); |
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#endif |
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void snd_gf1_mem_lock(struct snd_gf1_mem * alloc, int xup) |
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{ |
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if (!xup) { |
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mutex_lock(&alloc->memory_mutex); |
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} else { |
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mutex_unlock(&alloc->memory_mutex); |
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} |
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} |
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static struct snd_gf1_mem_block * |
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snd_gf1_mem_xalloc(struct snd_gf1_mem *alloc, struct snd_gf1_mem_block *block, |
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const char *name) |
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{ |
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struct snd_gf1_mem_block *pblock, *nblock; |
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nblock = kmalloc(sizeof(struct snd_gf1_mem_block), GFP_KERNEL); |
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if (nblock == NULL) |
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return NULL; |
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*nblock = *block; |
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nblock->name = kstrdup(name, GFP_KERNEL); |
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if (!nblock->name) { |
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kfree(nblock); |
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return NULL; |
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} |
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pblock = alloc->first; |
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while (pblock) { |
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if (pblock->ptr > nblock->ptr) { |
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nblock->prev = pblock->prev; |
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nblock->next = pblock; |
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pblock->prev = nblock; |
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if (pblock == alloc->first) |
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alloc->first = nblock; |
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else |
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nblock->prev->next = nblock; |
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mutex_unlock(&alloc->memory_mutex); |
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return nblock; |
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} |
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pblock = pblock->next; |
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} |
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nblock->next = NULL; |
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if (alloc->last == NULL) { |
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nblock->prev = NULL; |
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alloc->first = alloc->last = nblock; |
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} else { |
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nblock->prev = alloc->last; |
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alloc->last->next = nblock; |
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alloc->last = nblock; |
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} |
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return nblock; |
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} |
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int snd_gf1_mem_xfree(struct snd_gf1_mem * alloc, struct snd_gf1_mem_block * block) |
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{ |
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if (block->share) { /* ok.. shared block */ |
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block->share--; |
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mutex_unlock(&alloc->memory_mutex); |
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return 0; |
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} |
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if (alloc->first == block) { |
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alloc->first = block->next; |
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if (block->next) |
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block->next->prev = NULL; |
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} else { |
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block->prev->next = block->next; |
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if (block->next) |
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block->next->prev = block->prev; |
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} |
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if (alloc->last == block) { |
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alloc->last = block->prev; |
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if (block->prev) |
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block->prev->next = NULL; |
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} else { |
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block->next->prev = block->prev; |
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if (block->prev) |
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block->prev->next = block->next; |
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} |
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kfree(block->name); |
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kfree(block); |
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return 0; |
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} |
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static struct snd_gf1_mem_block *snd_gf1_mem_look(struct snd_gf1_mem * alloc, |
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unsigned int address) |
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{ |
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struct snd_gf1_mem_block *block; |
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for (block = alloc->first; block; block = block->next) { |
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if (block->ptr == address) { |
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return block; |
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} |
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} |
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return NULL; |
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} |
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static struct snd_gf1_mem_block *snd_gf1_mem_share(struct snd_gf1_mem * alloc, |
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unsigned int *share_id) |
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{ |
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struct snd_gf1_mem_block *block; |
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if (!share_id[0] && !share_id[1] && |
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!share_id[2] && !share_id[3]) |
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return NULL; |
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for (block = alloc->first; block; block = block->next) |
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if (!memcmp(share_id, block->share_id, |
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sizeof(block->share_id))) |
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return block; |
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return NULL; |
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} |
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static int snd_gf1_mem_find(struct snd_gf1_mem * alloc, |
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struct snd_gf1_mem_block * block, |
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unsigned int size, int w_16, int align) |
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{ |
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struct snd_gf1_bank_info *info = w_16 ? alloc->banks_16 : alloc->banks_8; |
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unsigned int idx, boundary; |
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int size1; |
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struct snd_gf1_mem_block *pblock; |
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unsigned int ptr1, ptr2; |
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if (w_16 && align < 2) |
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align = 2; |
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block->flags = w_16 ? SNDRV_GF1_MEM_BLOCK_16BIT : 0; |
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block->owner = SNDRV_GF1_MEM_OWNER_DRIVER; |
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block->share = 0; |
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block->share_id[0] = block->share_id[1] = |
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block->share_id[2] = block->share_id[3] = 0; |
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block->name = NULL; |
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block->prev = block->next = NULL; |
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for (pblock = alloc->first, idx = 0; pblock; pblock = pblock->next) { |
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while (pblock->ptr >= (boundary = info[idx].address + info[idx].size)) |
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idx++; |
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while (pblock->ptr + pblock->size >= (boundary = info[idx].address + info[idx].size)) |
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idx++; |
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ptr2 = boundary; |
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if (pblock->next) { |
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if (pblock->ptr + pblock->size == pblock->next->ptr) |
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continue; |
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if (pblock->next->ptr < boundary) |
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ptr2 = pblock->next->ptr; |
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} |
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ptr1 = ALIGN(pblock->ptr + pblock->size, align); |
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if (ptr1 >= ptr2) |
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continue; |
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size1 = ptr2 - ptr1; |
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if ((int)size <= size1) { |
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block->ptr = ptr1; |
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block->size = size; |
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return 0; |
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} |
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} |
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while (++idx < 4) { |
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if (size <= info[idx].size) { |
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/* I assume that bank address is already aligned.. */ |
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block->ptr = info[idx].address; |
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block->size = size; |
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return 0; |
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} |
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} |
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return -ENOMEM; |
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} |
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struct snd_gf1_mem_block *snd_gf1_mem_alloc(struct snd_gf1_mem * alloc, int owner, |
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char *name, int size, int w_16, int align, |
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unsigned int *share_id) |
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{ |
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struct snd_gf1_mem_block block, *nblock; |
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snd_gf1_mem_lock(alloc, 0); |
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if (share_id != NULL) { |
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nblock = snd_gf1_mem_share(alloc, share_id); |
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if (nblock != NULL) { |
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if (size != (int)nblock->size) { |
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/* TODO: remove in the future */ |
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snd_printk(KERN_ERR "snd_gf1_mem_alloc - share: sizes differ\n"); |
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goto __std; |
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} |
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nblock->share++; |
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snd_gf1_mem_lock(alloc, 1); |
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return NULL; |
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} |
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} |
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__std: |
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if (snd_gf1_mem_find(alloc, &block, size, w_16, align) < 0) { |
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snd_gf1_mem_lock(alloc, 1); |
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return NULL; |
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} |
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if (share_id != NULL) |
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memcpy(&block.share_id, share_id, sizeof(block.share_id)); |
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block.owner = owner; |
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nblock = snd_gf1_mem_xalloc(alloc, &block, name); |
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snd_gf1_mem_lock(alloc, 1); |
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return nblock; |
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} |
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int snd_gf1_mem_free(struct snd_gf1_mem * alloc, unsigned int address) |
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{ |
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int result; |
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struct snd_gf1_mem_block *block; |
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snd_gf1_mem_lock(alloc, 0); |
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block = snd_gf1_mem_look(alloc, address); |
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if (block) { |
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result = snd_gf1_mem_xfree(alloc, block); |
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snd_gf1_mem_lock(alloc, 1); |
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return result; |
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} |
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snd_gf1_mem_lock(alloc, 1); |
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return -EINVAL; |
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} |
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int snd_gf1_mem_init(struct snd_gus_card * gus) |
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{ |
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struct snd_gf1_mem *alloc; |
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struct snd_gf1_mem_block block; |
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alloc = &gus->gf1.mem_alloc; |
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mutex_init(&alloc->memory_mutex); |
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alloc->first = alloc->last = NULL; |
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if (!gus->gf1.memory) |
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return 0; |
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memset(&block, 0, sizeof(block)); |
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block.owner = SNDRV_GF1_MEM_OWNER_DRIVER; |
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if (gus->gf1.enh_mode) { |
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block.ptr = 0; |
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block.size = 1024; |
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if (!snd_gf1_mem_xalloc(alloc, &block, "InterWave LFOs")) |
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return -ENOMEM; |
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} |
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block.ptr = gus->gf1.default_voice_address; |
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block.size = 4; |
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if (!snd_gf1_mem_xalloc(alloc, &block, "Voice default (NULL's)")) |
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return -ENOMEM; |
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#ifdef CONFIG_SND_DEBUG |
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snd_card_ro_proc_new(gus->card, "gusmem", gus, snd_gf1_mem_info_read); |
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#endif |
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return 0; |
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} |
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int snd_gf1_mem_done(struct snd_gus_card * gus) |
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{ |
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struct snd_gf1_mem *alloc; |
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struct snd_gf1_mem_block *block, *nblock; |
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alloc = &gus->gf1.mem_alloc; |
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block = alloc->first; |
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while (block) { |
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nblock = block->next; |
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snd_gf1_mem_xfree(alloc, block); |
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block = nblock; |
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} |
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return 0; |
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} |
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#ifdef CONFIG_SND_DEBUG |
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static void snd_gf1_mem_info_read(struct snd_info_entry *entry, |
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struct snd_info_buffer *buffer) |
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{ |
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struct snd_gus_card *gus; |
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struct snd_gf1_mem *alloc; |
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struct snd_gf1_mem_block *block; |
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unsigned int total, used; |
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int i; |
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gus = entry->private_data; |
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alloc = &gus->gf1.mem_alloc; |
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mutex_lock(&alloc->memory_mutex); |
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snd_iprintf(buffer, "8-bit banks : \n "); |
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for (i = 0; i < 4; i++) |
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snd_iprintf(buffer, "0x%06x (%04ik)%s", alloc->banks_8[i].address, alloc->banks_8[i].size >> 10, i + 1 < 4 ? "," : ""); |
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snd_iprintf(buffer, "\n" |
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"16-bit banks : \n "); |
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for (i = total = 0; i < 4; i++) { |
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snd_iprintf(buffer, "0x%06x (%04ik)%s", alloc->banks_16[i].address, alloc->banks_16[i].size >> 10, i + 1 < 4 ? "," : ""); |
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total += alloc->banks_16[i].size; |
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} |
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snd_iprintf(buffer, "\n"); |
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used = 0; |
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for (block = alloc->first, i = 0; block; block = block->next, i++) { |
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used += block->size; |
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snd_iprintf(buffer, "Block %i onboard 0x%x size %i (0x%x):\n", i, block->ptr, block->size, block->size); |
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if (block->share || |
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block->share_id[0] || block->share_id[1] || |
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block->share_id[2] || block->share_id[3]) |
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snd_iprintf(buffer, " Share : %i [id0 0x%x] [id1 0x%x] [id2 0x%x] [id3 0x%x]\n", |
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block->share, |
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block->share_id[0], block->share_id[1], |
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block->share_id[2], block->share_id[3]); |
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snd_iprintf(buffer, " Flags :%s\n", |
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block->flags & SNDRV_GF1_MEM_BLOCK_16BIT ? " 16-bit" : ""); |
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snd_iprintf(buffer, " Owner : "); |
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switch (block->owner) { |
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case SNDRV_GF1_MEM_OWNER_DRIVER: |
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snd_iprintf(buffer, "driver - %s\n", block->name); |
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break; |
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case SNDRV_GF1_MEM_OWNER_WAVE_SIMPLE: |
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snd_iprintf(buffer, "SIMPLE wave\n"); |
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break; |
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case SNDRV_GF1_MEM_OWNER_WAVE_GF1: |
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snd_iprintf(buffer, "GF1 wave\n"); |
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break; |
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case SNDRV_GF1_MEM_OWNER_WAVE_IWFFFF: |
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snd_iprintf(buffer, "IWFFFF wave\n"); |
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break; |
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default: |
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snd_iprintf(buffer, "unknown\n"); |
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} |
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} |
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snd_iprintf(buffer, " Total: memory = %i, used = %i, free = %i\n", |
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total, used, total - used); |
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mutex_unlock(&alloc->memory_mutex); |
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#if 0 |
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ultra_iprintf(buffer, " Verify: free = %i, max 8-bit block = %i, max 16-bit block = %i\n", |
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ultra_memory_free_size(card, &card->gf1.mem_alloc), |
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ultra_memory_free_block(card, &card->gf1.mem_alloc, 0), |
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ultra_memory_free_block(card, &card->gf1.mem_alloc, 1)); |
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#endif |
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} |
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#endif
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