*
*/
-#include <linux/config.h>
#include <linux/module.h>
#include <linux/proc_fs.h>
#include <linux/init.h>
#include <asm/uaccess.h>
#include <linux/dma-mapping.h>
#include <linux/moduleparam.h>
-#include <asm/semaphore.h>
+#include <linux/mutex.h>
#include <sound/memalloc.h>
#ifdef CONFIG_SBUS
#include <asm/sbus.h>
MODULE_LICENSE("GPL");
-#ifndef SNDRV_CARDS
-#define SNDRV_CARDS 8
-#endif
-
/*
*/
/*
*/
-static DECLARE_MUTEX(list_mutex);
+static DEFINE_MUTEX(list_mutex);
static LIST_HEAD(mem_list_head);
/* buffer preservation list */
* Hacks
*/
-#if defined(__i386__) || defined(__ppc__) || defined(__x86_64__)
+#if defined(__i386__)
/*
* A hack to allocate large buffers via dma_alloc_coherent()
*
static void *snd_dma_hack_alloc_coherent(struct device *dev, size_t size,
dma_addr_t *dma_handle,
- unsigned int __nocast flags)
+ gfp_t flags)
{
void *ret;
u64 dma_mask, coherent_dma_mask;
#endif /* arch */
-#if ! defined(__arm__)
-#define NEED_RESERVE_PAGES
-#endif
-
/*
*
* Generic memory allocators
snd_allocated_pages -= 1 << order;
}
-static void mark_pages(struct page *page, int order)
-{
- struct page *last_page = page + (1 << order);
- while (page < last_page)
- SetPageReserved(page++);
-}
-
-static void unmark_pages(struct page *page, int order)
-{
- struct page *last_page = page + (1 << order);
- while (page < last_page)
- ClearPageReserved(page++);
-}
-
/**
* snd_malloc_pages - allocate pages with the given size
* @size: the size to allocate in bytes
*
* Returns the pointer of the buffer, or NULL if no enoguh memory.
*/
-void *snd_malloc_pages(size_t size, unsigned int gfp_flags)
+void *snd_malloc_pages(size_t size, gfp_t gfp_flags)
{
int pg;
void *res;
snd_assert(size > 0, return NULL);
snd_assert(gfp_flags != 0, return NULL);
+ gfp_flags |= __GFP_COMP; /* compound page lets parts be mapped */
pg = get_order(size);
- if ((res = (void *) __get_free_pages(gfp_flags, pg)) != NULL) {
- mark_pages(virt_to_page(res), pg);
+ if ((res = (void *) __get_free_pages(gfp_flags, pg)) != NULL)
inc_snd_pages(pg);
- }
return res;
}
return;
pg = get_order(size);
dec_snd_pages(pg);
- unmark_pages(virt_to_page(ptr), pg);
free_pages((unsigned long) ptr, pg);
}
{
int pg;
void *res;
- unsigned int gfp_flags;
+ gfp_t gfp_flags;
snd_assert(size > 0, return NULL);
snd_assert(dma != NULL, return NULL);
pg = get_order(size);
gfp_flags = GFP_KERNEL
+ | __GFP_COMP /* compound page lets parts be mapped */
| __GFP_NORETRY /* don't trigger OOM-killer */
| __GFP_NOWARN; /* no stack trace print - this call is non-critical */
res = dma_alloc_coherent(dev, PAGE_SIZE << pg, dma, gfp_flags);
- if (res != NULL) {
-#ifdef NEED_RESERVE_PAGES
- mark_pages(virt_to_page(res), pg); /* should be dma_to_page() */
-#endif
+ if (res != NULL)
inc_snd_pages(pg);
- }
return res;
}
return;
pg = get_order(size);
dec_snd_pages(pg);
-#ifdef NEED_RESERVE_PAGES
- unmark_pages(virt_to_page(ptr), pg); /* should be dma_to_page() */
-#endif
dma_free_coherent(dev, PAGE_SIZE << pg, ptr, dma);
}
snd_assert(dmab, return 0);
- down(&list_mutex);
+ mutex_lock(&list_mutex);
list_for_each(p, &mem_list_head) {
mem = list_entry(p, struct snd_mem_list, list);
if (mem->id == id &&
if (dmab->dev.dev == NULL)
dmab->dev.dev = dev;
kfree(mem);
- up(&list_mutex);
+ mutex_unlock(&list_mutex);
return dmab->bytes;
}
}
- up(&list_mutex);
+ mutex_unlock(&list_mutex);
return 0;
}
mem = kmalloc(sizeof(*mem), GFP_KERNEL);
if (! mem)
return -ENOMEM;
- down(&list_mutex);
+ mutex_lock(&list_mutex);
mem->buffer = *dmab;
mem->id = id;
list_add_tail(&mem->list, &mem_list_head);
- up(&list_mutex);
+ mutex_unlock(&list_mutex);
return 0;
}
struct list_head *p;
struct snd_mem_list *mem;
- down(&list_mutex);
+ mutex_lock(&list_mutex);
while (! list_empty(&mem_list_head)) {
p = mem_list_head.next;
mem = list_entry(p, struct snd_mem_list, list);
snd_dma_free_pages(&mem->buffer);
kfree(mem);
}
- up(&list_mutex);
+ mutex_unlock(&list_mutex);
}
* proc file interface
*/
#define SND_MEM_PROC_FILE "driver/snd-page-alloc"
-struct proc_dir_entry *snd_mem_proc;
+static struct proc_dir_entry *snd_mem_proc;
static int snd_mem_proc_read(char *page, char **start, off_t off,
int count, int *eof, void *data)
int devno;
static char *types[] = { "UNKNOWN", "CONT", "DEV", "DEV-SG", "SBUS" };
- down(&list_mutex);
+ mutex_lock(&list_mutex);
len += snprintf(page + len, count - len,
"pages : %li bytes (%li pages per %likB)\n",
pages * PAGE_SIZE, pages, PAGE_SIZE / 1024);
" addr = 0x%lx, size = %d bytes\n",
(unsigned long)mem->buffer.addr, (int)mem->buffer.bytes);
}
- up(&list_mutex);
+ mutex_unlock(&list_mutex);
return len;
}
alloced = 0;
pci = NULL;
- while ((pci = pci_find_device(vendor, device, pci)) != NULL) {
+ while ((pci = pci_get_device(vendor, device, pci)) != NULL) {
if (mask > 0 && mask < 0xffffffff) {
if (pci_set_dma_mask(pci, mask) < 0 ||
pci_set_consistent_dma_mask(pci, mask) < 0) {
if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(pci),
size, &dmab) < 0) {
printk(KERN_ERR "snd-page-alloc: cannot allocate buffer pages (size = %d)\n", size);
+ pci_dev_put(pci);
return (int)count;
}
snd_dma_reserve_buf(&dmab, snd_dma_pci_buf_id(pci));
static void __exit snd_mem_exit(void)
{
- if (snd_mem_proc)
- remove_proc_entry(SND_MEM_PROC_FILE, NULL);
+ remove_proc_entry(SND_MEM_PROC_FILE, NULL);
free_all_reserved_pages();
if (snd_allocated_pages > 0)
printk(KERN_ERR "snd-malloc: Memory leak? pages not freed = %li\n", snd_allocated_pages);
git.openpandora.org / pandora-kernel.git / blobdiff