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rt2x00: add queue_init callback to rt2x00_ops 

The driver uses static data structures for initializing
specific fields of a given data queue. These static
queue data descriptor structures are containing values
which related to a given chipset.

Even though the values are chip specific, the actual
selection of the used structure is based on device
specific vendor/product identifiers. This approach works,
but it is not always reliable. Sometimes the vendor and/or
device IDs of the PCI and USB devices contains improper
values which makes it impossible to select the correct
structure for such devices.

The patch adds a new callback to tr2x00_ops which
is called after the chipset detection is finished.
This allows the drivers to do dynamic initialization
of the data_queue structure for a given queue based
on the actual chipset.

After each driver implements the queue_init callback,
the data_queue_desc structure will be removed.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Acked-by: Stanislaw Gruszka <sgruszka@redhat.com>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Gabor Juhos 2013-06-04 13:40:42 +02:00 committed by John W. Linville
parent 04453e9bda
commit 25bf6ce41d
2 changed files with 14 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/net/wireless/rt2x00/rt2x00.h
View File

@ -653,6 +653,7 @@ struct rt2x00_ops {
const struct data_queue_desc *tx;
const struct data_queue_desc *bcn;
const struct data_queue_desc *atim;
void (*queue_init)(struct data_queue *queue);
const struct rt2x00lib_ops *lib;
const void *drv;
const struct ieee80211_ops *hw;

22
drivers/net/wireless/rt2x00/rt2x00queue.c
View File

@ -1306,8 +1306,6 @@ rt2x00queue_get_qdesc_by_qid(struct rt2x00_dev *rt2x00dev,
static void rt2x00queue_init(struct rt2x00_dev *rt2x00dev,
struct data_queue *queue, enum data_queue_qid qid)
{
const struct data_queue_desc *qdesc;
mutex_init(&queue->status_lock);
spin_lock_init(&queue->tx_lock);
spin_lock_init(&queue->index_lock);
@ -1319,14 +1317,20 @@ static void rt2x00queue_init(struct rt2x00_dev *rt2x00dev,
queue->cw_min = 5;
queue->cw_max = 10;
qdesc = rt2x00queue_get_qdesc_by_qid(rt2x00dev, qid);
BUG_ON(!qdesc);
if (rt2x00dev->ops->queue_init) {
rt2x00dev->ops->queue_init(queue);
} else {
const struct data_queue_desc *qdesc;
queue->limit = qdesc->entry_num;
queue->data_size = qdesc->data_size;
queue->desc_size = qdesc->desc_size;
queue->winfo_size = qdesc->winfo_size;
queue->priv_size = qdesc->priv_size;
qdesc = rt2x00queue_get_qdesc_by_qid(rt2x00dev, qid);
BUG_ON(!qdesc);
queue->limit = qdesc->entry_num;
queue->data_size = qdesc->data_size;
queue->desc_size = qdesc->desc_size;
queue->winfo_size = qdesc->winfo_size;
queue->priv_size = qdesc->priv_size;
}
queue->threshold = DIV_ROUND_UP(queue->limit, 10);
}