int dmabounce_register_dev(struct device *dev, unsigned long small_buffer_size,
unsigned long large_buffer_size,
int (*needs_bounce_fn)(struct device *, dma_addr_t, size_t))
{
struct dmabounce_device_info *device_info;
int ret;
device_info = kmalloc(sizeof(struct dmabounce_device_info), GFP_ATOMIC);
if (!device_info) {
dev_err(dev,
"Could not allocated dmabounce_device_info\n");
return -ENOMEM;
}
ret = dmabounce_init_pool(&device_info->small, dev,
"small_dmabounce_pool", small_buffer_size);
if (ret) {
dev_err(dev,
"dmabounce: could not allocate DMA pool for %ld byte objects\n",
small_buffer_size);
goto err_free;
}
if (large_buffer_size) {
ret = dmabounce_init_pool(&device_info->large, dev,
"large_dmabounce_pool",
large_buffer_size);
if (ret) {
dev_err(dev,
"dmabounce: could not allocate DMA pool for %ld byte objects\n",
large_buffer_size);
goto err_destroy;
}
}
device_info->dev = dev;
INIT_LIST_HEAD(&device_info->safe_buffers);
rwlock_init(&device_info->lock);
device_info->needs_bounce = needs_bounce_fn;
#ifdef STATS
device_info->total_allocs = 0;
device_info->map_op_count = 0;
device_info->bounce_count = 0;
device_info->attr_res = device_create_file(dev, &dev_attr_dmabounce_stats);
#endif
dev->archdata.dmabounce = device_info;
set_dma_ops(dev, &dmabounce_ops);
dev_info(dev, "dmabounce: registered device\n");
return 0;
err_destroy:
dma_pool_destroy(device_info->small.pool);
err_free:
kfree(device_info);
return ret;
}
int
dmabounce_register_dev(struct device *dev, unsigned long small_buffer_size,
unsigned long large_buffer_size)
{
struct dmabounce_device_info *device_info;
int ret;
device_info = kmalloc(sizeof(struct dmabounce_device_info), GFP_ATOMIC);
if (!device_info) {
printk(KERN_ERR
"Could not allocated dmabounce_device_info for %s",
dev->bus_id);
return -ENOMEM;
}
ret = dmabounce_init_pool(&device_info->small, dev,
"small_dmabounce_pool", small_buffer_size);
if (ret) {
dev_err(dev,
"dmabounce: could not allocate DMA pool for %ld byte objects\n",
small_buffer_size);
goto err_free;
}
if (large_buffer_size) {
ret = dmabounce_init_pool(&device_info->large, dev,
"large_dmabounce_pool",
large_buffer_size);
if (ret) {
dev_err(dev,
"dmabounce: could not allocate DMA pool for %ld byte objects\n",
large_buffer_size);
goto err_destroy;
}
}
device_info->dev = dev;
INIT_LIST_HEAD(&device_info->safe_buffers);
rwlock_init(&device_info->lock);
#ifdef STATS
device_info->total_allocs = 0;
device_info->map_op_count = 0;
device_info->bounce_count = 0;
device_info->attr_res = device_create_file(dev, &dev_attr_dmabounce_stats);
#endif
dev->archdata.dmabounce = device_info;
printk(KERN_INFO "dmabounce: registered device %s on %s bus\n",
dev->bus_id, dev->bus->name);
return 0;
err_destroy:
dma_pool_destroy(device_info->small.pool);
err_free:
kfree(device_info);
return ret;
}
