iwlwifi: implement txq invalidate byte count table

This is required to overcome a bug in 5000 HW byte count table.

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 21 insertions, 0 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-5000.c b/drivers/net/wireless/iwlwifi/iwl-5000.c
index dc9f3b683795..6a10526d939b 100644
--- a/drivers/net/wireless/iwlwifi/iwl-5000.c
+++ b/drivers/net/wireless/iwlwifi/iwl-5000.c
@@ -955,6 +955,26 @@ static void iwl5000_txq_update_byte_cnt_tbl(struct iwl_priv *priv,
         }
 }
 
+static void iwl5000_txq_inval_byte_cnt_tbl(struct iwl_priv *priv,
+                                           struct iwl_tx_queue *txq)
+{
+        int txq_id = txq->q.id;
+        struct iwl5000_shared *shared_data = priv->shared_virt;
+        u8 sta = 0;
+
+        if (txq_id != IWL_CMD_QUEUE_NUM)
+                sta = txq->cmd[txq->q.read_ptr].cmd.tx.sta_id;
+
+        shared_data->queues_byte_cnt_tbls[txq_id].tfd_offset[txq->q.read_ptr].
+                                        val = cpu_to_le16(1 | (sta << 12));
+
+        if (txq->q.write_ptr < IWL50_MAX_WIN_SIZE) {
+                shared_data->queues_byte_cnt_tbls[txq_id].
+                        tfd_offset[IWL50_QUEUE_SIZE + txq->q.read_ptr].
+                                val = cpu_to_le16(1 | (sta << 12));
+        }
+}
+
 static u16 iwl5000_build_addsta_hcmd(const struct iwl_addsta_cmd *cmd, u8 *data)
 {
         u16 size = (u16)sizeof(struct iwl_addsta_cmd);
@@ -1248,6 +1268,7 @@ static struct iwl_lib_ops iwl5000_lib = {
         .free_shared_mem = iwl5000_free_shared_mem,
         .shared_mem_rx_idx = iwl5000_shared_mem_rx_idx,
         .txq_update_byte_cnt_tbl = iwl5000_txq_update_byte_cnt_tbl,
+        .txq_inval_byte_cnt_tbl = iwl5000_txq_inval_byte_cnt_tbl,
         .txq_set_sched = iwl5000_txq_set_sched,
         .rx_handler_setup = iwl5000_rx_handler_setup,
         .is_valid_rtc_data_addr = iwl5000_hw_valid_rtc_data_addr,