list_for_each (pos, &emu->mapped_link_head) {
struct snd_emu10k1_memblk *blk = get_emu10k1_memblk(pos, mapped_link);
- snd_assert(blk->mapped_page >= 0, continue);
+ if (blk->mapped_page < 0)
+ continue;
size = blk->mapped_page - page;
if (size == npages) {
*nextp = pos;
snd_emu10k1_alloc_pages(struct snd_emu10k1 *emu, struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
- struct snd_sg_buf *sgbuf = snd_pcm_substream_sgbuf(substream);
struct snd_util_memhdr *hdr;
struct snd_emu10k1_memblk *blk;
int page, err, idx;
- snd_assert(emu, return NULL);
- snd_assert(runtime->dma_bytes > 0 && runtime->dma_bytes < MAXPAGES * EMUPAGESIZE, return NULL);
+ if (snd_BUG_ON(!emu))
+ return NULL;
+ if (snd_BUG_ON(runtime->dma_bytes <= 0 ||
+ runtime->dma_bytes >= MAXPAGES * EMUPAGESIZE))
+ return NULL;
hdr = emu->memhdr;
- snd_assert(hdr, return NULL);
+ if (snd_BUG_ON(!hdr))
+ return NULL;
mutex_lock(&hdr->block_mutex);
blk = search_empty(emu, runtime->dma_bytes);
*/
idx = 0;
for (page = blk->first_page; page <= blk->last_page; page++, idx++) {
+ unsigned long ofs = idx << PAGE_SHIFT;
dma_addr_t addr;
-#ifdef CONFIG_SND_DEBUG
- if (idx >= sgbuf->pages) {
- printk(KERN_ERR "emu: pages overflow! (%d-%d) for %d\n",
- blk->first_page, blk->last_page, sgbuf->pages);
- mutex_unlock(&hdr->block_mutex);
- return NULL;
- }
-#endif
- addr = sgbuf->table[idx].addr;
+ addr = snd_pcm_sgbuf_get_addr(substream, ofs);
if (! is_valid_page(emu, addr)) {
printk(KERN_ERR "emu: failure page = %d\n", idx);
mutex_unlock(&hdr->block_mutex);
*/
int snd_emu10k1_free_pages(struct snd_emu10k1 *emu, struct snd_util_memblk *blk)
{
- snd_assert(emu && blk, return -EINVAL);
+ if (snd_BUG_ON(!emu || !blk))
+ return -EINVAL;
return snd_emu10k1_synth_free(emu, blk);
}
*last_page_ret = last_page;
}
+/* release allocated pages */
+static void __synth_free_pages(struct snd_emu10k1 *emu, int first_page,
+ int last_page)
+{
+ int page;
+
+ for (page = first_page; page <= last_page; page++) {
+ free_page((unsigned long)emu->page_ptr_table[page]);
+ emu->page_addr_table[page] = 0;
+ emu->page_ptr_table[page] = NULL;
+ }
+}
+
/*
* allocate kernel pages
*/
static int synth_alloc_pages(struct snd_emu10k1 *emu, struct snd_emu10k1_memblk *blk)
{
int page, first_page, last_page;
- struct snd_dma_buffer dmab;
emu10k1_memblk_init(blk);
get_single_page_range(emu->memhdr, blk, &first_page, &last_page);
/* allocate kernel pages */
for (page = first_page; page <= last_page; page++) {
- if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(emu->pci),
- PAGE_SIZE, &dmab) < 0)
- goto __fail;
- if (! is_valid_page(emu, dmab.addr)) {
- snd_dma_free_pages(&dmab);
- goto __fail;
+ /* first try to allocate from <4GB zone */
+ struct page *p = alloc_page(GFP_KERNEL | GFP_DMA32 |
+ __GFP_NOWARN);
+ if (!p || (page_to_pfn(p) & ~(emu->dma_mask >> PAGE_SHIFT))) {
+ if (p)
+ __free_page(p);
+ /* try to allocate from <16MB zone */
+ p = alloc_page(GFP_ATOMIC | GFP_DMA |
+ __GFP_NORETRY | /* no OOM-killer */
+ __GFP_NOWARN);
+ }
+ if (!p) {
+ __synth_free_pages(emu, first_page, page - 1);
+ return -ENOMEM;
}
- emu->page_addr_table[page] = dmab.addr;
- emu->page_ptr_table[page] = dmab.area;
+ emu->page_addr_table[page] = page_to_phys(p);
+ emu->page_ptr_table[page] = page_address(p);
}
return 0;
-
-__fail:
- /* release allocated pages */
- last_page = page - 1;
- for (page = first_page; page <= last_page; page++) {
- dmab.area = emu->page_ptr_table[page];
- dmab.addr = emu->page_addr_table[page];
- dmab.bytes = PAGE_SIZE;
- snd_dma_free_pages(&dmab);
- emu->page_addr_table[page] = 0;
- emu->page_ptr_table[page] = NULL;
- }
-
- return -ENOMEM;
}
/*
*/
static int synth_free_pages(struct snd_emu10k1 *emu, struct snd_emu10k1_memblk *blk)
{
- int page, first_page, last_page;
- struct snd_dma_buffer dmab;
+ int first_page, last_page;
get_single_page_range(emu->memhdr, blk, &first_page, &last_page);
- dmab.dev.type = SNDRV_DMA_TYPE_DEV;
- dmab.dev.dev = snd_dma_pci_data(emu->pci);
- for (page = first_page; page <= last_page; page++) {
- if (emu->page_ptr_table[page] == NULL)
- continue;
- dmab.area = emu->page_ptr_table[page];
- dmab.addr = emu->page_addr_table[page];
- dmab.bytes = PAGE_SIZE;
- snd_dma_free_pages(&dmab);
- emu->page_addr_table[page] = 0;
- emu->page_ptr_table[page] = NULL;
- }
-
+ __synth_free_pages(emu, first_page, last_page);
return 0;
}
static inline void *offset_ptr(struct snd_emu10k1 *emu, int page, int offset)
{
char *ptr;
- snd_assert(page >= 0 && page < emu->max_cache_pages, return NULL);
+ if (snd_BUG_ON(page < 0 || page >= emu->max_cache_pages))
+ return NULL;
ptr = emu->page_ptr_table[page];
if (! ptr) {
printk(KERN_ERR "emu10k1: access to NULL ptr: page = %d\n", page);