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authorTomas Winkler <tomas.winkler@intel.com>2008-03-06 17:36:53 -0800
committerJohn W. Linville <linville@tuxdriver.com>2008-03-07 16:03:01 -0500
commitc54b679ddcd91604fd0d144cd793a0ddbd0ae03d (patch)
tree3ebbedc13d2a64a1c6491ac29c5c3a18e934bc6b /drivers/net/wireless/iwlwifi/iwl3945-base.c
parent34cf6ff6dd42cbc61fd652f893dcf71eed6052a5 (diff)
downloadblackbird-op-linux-c54b679ddcd91604fd0d144cd793a0ddbd0ae03d.tar.gz
blackbird-op-linux-c54b679ddcd91604fd0d144cd793a0ddbd0ae03d.zip
iwlwifi: queue functions cleanup
This patch moves 1. iwl_queue_inc_wrap and int iwl_queue_dec_wrap into iwl-helpers.h these two functions are identical to common for both iwl3956 and iwl4965 2. renames x2_queue_used to iwl3945_x2_queue_used 3. exports iwl3945_queue_space out of iwl3964-base.c Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl3945-base.c')
-rw-r--r--drivers/net/wireless/iwlwifi/iwl3945-base.c45
1 files changed, 13 insertions, 32 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl3945-base.c b/drivers/net/wireless/iwlwifi/iwl3945-base.c
index 4aaced0b9f26..39fd5440a248 100644
--- a/drivers/net/wireless/iwlwifi/iwl3945-base.c
+++ b/drivers/net/wireless/iwlwifi/iwl3945-base.c
@@ -183,7 +183,7 @@ static const char *iwl3945_escape_essid(const char *essid, u8 essid_len)
* (#0-3) for data tx via EDCA. An additional 2 HCCA queues are unused.
***************************************************/
-static int iwl3945_queue_space(const struct iwl3945_queue *q)
+int iwl3945_queue_space(const struct iwl3945_queue *q)
{
int s = q->read_ptr - q->write_ptr;
@@ -199,33 +199,14 @@ static int iwl3945_queue_space(const struct iwl3945_queue *q)
return s;
}
-/**
- * iwl3945_queue_inc_wrap - increment queue index, wrap back to beginning
- * @index -- current index
- * @n_bd -- total number of entries in queue (must be power of 2)
- */
-static inline int iwl3945_queue_inc_wrap(int index, int n_bd)
-{
- return ++index & (n_bd - 1);
-}
-
-/**
- * iwl3945_queue_dec_wrap - increment queue index, wrap back to end
- * @index -- current index
- * @n_bd -- total number of entries in queue (must be power of 2)
- */
-static inline int iwl3945_queue_dec_wrap(int index, int n_bd)
-{
- return --index & (n_bd - 1);
-}
-
-static inline int x2_queue_used(const struct iwl3945_queue *q, int i)
+int iwl3945_x2_queue_used(const struct iwl3945_queue *q, int i)
{
return q->write_ptr > q->read_ptr ?
(i >= q->read_ptr && i < q->write_ptr) :
!(i < q->read_ptr && i >= q->write_ptr);
}
+
static inline u8 get_cmd_index(struct iwl3945_queue *q, u32 index, int is_huge)
{
/* This is for scan command, the big buffer at end of command array */
@@ -246,8 +227,8 @@ static int iwl3945_queue_init(struct iwl3945_priv *priv, struct iwl3945_queue *q
q->n_window = slots_num;
q->id = id;
- /* count must be power-of-two size, otherwise iwl3945_queue_inc_wrap
- * and iwl3945_queue_dec_wrap are broken. */
+ /* count must be power-of-two size, otherwise iwl_queue_inc_wrap
+ * and iwl_queue_dec_wrap are broken. */
BUG_ON(!is_power_of_2(count));
/* slots_num must be power-of-two size, otherwise
@@ -347,7 +328,7 @@ int iwl3945_tx_queue_init(struct iwl3945_priv *priv,
txq->need_update = 0;
/* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
- * iwl3945_queue_inc_wrap and iwl3945_queue_dec_wrap are broken. */
+ * iwl_queue_inc_wrap and iwl_queue_dec_wrap are broken. */
BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
/* Initialize queue high/low-water, head/tail indexes */
@@ -378,7 +359,7 @@ void iwl3945_tx_queue_free(struct iwl3945_priv *priv, struct iwl3945_tx_queue *t
/* first, empty all BD's */
for (; q->write_ptr != q->read_ptr;
- q->read_ptr = iwl3945_queue_inc_wrap(q->read_ptr, q->n_bd))
+ q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd))
iwl3945_hw_txq_free_tfd(priv, txq);
len = sizeof(struct iwl3945_cmd) * q->n_window;
@@ -717,7 +698,7 @@ static int iwl3945_enqueue_hcmd(struct iwl3945_priv *priv, struct iwl3945_host_c
txq->need_update = 1;
/* Increment and update queue's write index */
- q->write_ptr = iwl3945_queue_inc_wrap(q->write_ptr, q->n_bd);
+ q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
ret = iwl3945_tx_queue_update_write_ptr(priv, txq);
spin_unlock_irqrestore(&priv->hcmd_lock, flags);
@@ -2797,7 +2778,7 @@ static int iwl3945_tx_skb(struct iwl3945_priv *priv,
ieee80211_get_hdrlen(fc));
/* Tell device the write index *just past* this latest filled TFD */
- q->write_ptr = iwl3945_queue_inc_wrap(q->write_ptr, q->n_bd);
+ q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
rc = iwl3945_tx_queue_update_write_ptr(priv, txq);
spin_unlock_irqrestore(&priv->lock, flags);
@@ -3189,16 +3170,16 @@ static int iwl3945_tx_queue_reclaim(struct iwl3945_priv *priv, int txq_id, int i
struct iwl3945_queue *q = &txq->q;
int nfreed = 0;
- if ((index >= q->n_bd) || (x2_queue_used(q, index) == 0)) {
+ if ((index >= q->n_bd) || (iwl3945_x2_queue_used(q, index) == 0)) {
IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
"is out of range [0-%d] %d %d.\n", txq_id,
index, q->n_bd, q->write_ptr, q->read_ptr);
return 0;
}
- for (index = iwl3945_queue_inc_wrap(index, q->n_bd);
+ for (index = iwl_queue_inc_wrap(index, q->n_bd);
q->read_ptr != index;
- q->read_ptr = iwl3945_queue_inc_wrap(q->read_ptr, q->n_bd)) {
+ q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
if (txq_id != IWL_CMD_QUEUE_NUM) {
iwl3945_txstatus_to_ieee(priv,
&(txq->txb[txq->q.read_ptr]));
@@ -3245,7 +3226,7 @@ static void iwl3945_rx_reply_tx(struct iwl3945_priv *priv,
struct iwl3945_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
u32 status = le32_to_cpu(tx_resp->status);
- if ((index >= txq->q.n_bd) || (x2_queue_used(&txq->q, index) == 0)) {
+ if ((index >= txq->q.n_bd) || (iwl3945_x2_queue_used(&txq->q, index) == 0)) {
IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
"is out of range [0-%d] %d %d\n", txq_id,
index, txq->q.n_bd, txq->q.write_ptr,
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