iwlwifi: move tx queue related code to separate file

Multiple iwlagn based devices shared the same tansmit queue functions.
Move tx queue related code from iwl-5000.c to iwl-agn-tx.c file.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>

1 files changed, 12 insertions, 241 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-5000.c b/drivers/net/wireless/iwlwifi/iwl-5000.c
index 8aa382e370f6..7e278956ec37 100644
--- a/drivers/net/wireless/iwlwifi/iwl-5000.c
+++ b/drivers/net/wireless/iwlwifi/iwl-5000.c
@@ -358,34 +358,6 @@ restart:
         queue_work(priv->workqueue, &priv->restart);
 }
 
-static void iwl5000_set_wr_ptrs(struct iwl_priv *priv,
-                                int txq_id, u32 index)
-{
-        iwl_write_direct32(priv, HBUS_TARG_WRPTR,
-                        (index & 0xff) | (txq_id << 8));
-        iwl_write_prph(priv, IWL50_SCD_QUEUE_RDPTR(txq_id), index);
-}
-
-static void iwl5000_tx_queue_set_status(struct iwl_priv *priv,
-                                        struct iwl_tx_queue *txq,
-                                        int tx_fifo_id, int scd_retry)
-{
-        int txq_id = txq->q.id;
-        int active = test_bit(txq_id, &priv->txq_ctx_active_msk) ? 1 : 0;
-
-        iwl_write_prph(priv, IWL50_SCD_QUEUE_STATUS_BITS(txq_id),
-                        (active << IWL50_SCD_QUEUE_STTS_REG_POS_ACTIVE) |
-                        (tx_fifo_id << IWL50_SCD_QUEUE_STTS_REG_POS_TXF) |
-                        (1 << IWL50_SCD_QUEUE_STTS_REG_POS_WSL) |
-                        IWL50_SCD_QUEUE_STTS_REG_MSK);
-
-        txq->sched_retry = scd_retry;
-
-        IWL_DEBUG_INFO(priv, "%s %s Queue %d on FIFO %d\n",
-                       active ? "Activate" : "Deactivate",
-                       scd_retry ? "BA" : "AC/CMD", txq_id, tx_fifo_id);
-}
-
 int iwl5000_alive_notify(struct iwl_priv *priv)
 {
         u32 a;
@@ -448,7 +420,7 @@ int iwl5000_alive_notify(struct iwl_priv *priv)
         /* Activate all Tx DMA/FIFO channels */
         priv->cfg->ops->lib->txq_set_sched(priv, IWL_MASK(0, 7));
 
-        iwl5000_set_wr_ptrs(priv, IWL_CMD_QUEUE_NUM, 0);
+        iwlagn_set_wr_ptrs(priv, IWL_CMD_QUEUE_NUM, 0);
 
         /* make sure all queue are not stopped */
         memset(&priv->queue_stopped[0], 0, sizeof(priv->queue_stopped));
@@ -468,7 +440,7 @@ int iwl5000_alive_notify(struct iwl_priv *priv)
                 if (ac == IWL_TX_FIFO_UNUSED)
                         continue;
 
-                iwl5000_tx_queue_set_status(priv, &priv->txq[i], ac, 0);
+                iwlagn_tx_queue_set_status(priv, &priv->txq[i], ac, 0);
         }
 
         spin_unlock_irqrestore(&priv->lock, flags);
@@ -539,207 +511,6 @@ int iwl5000_hw_set_hw_params(struct iwl_priv *priv)
         return 0;
 }
 
-/**
- * iwl5000_txq_update_byte_cnt_tbl - Set up entry in Tx byte-count array
- */
-void iwl5000_txq_update_byte_cnt_tbl(struct iwl_priv *priv,
-                                            struct iwl_tx_queue *txq,
-                                            u16 byte_cnt)
-{
-        struct iwl5000_scd_bc_tbl *scd_bc_tbl = priv->scd_bc_tbls.addr;
-        int write_ptr = txq->q.write_ptr;
-        int txq_id = txq->q.id;
-        u8 sec_ctl = 0;
-        u8 sta_id = 0;
-        u16 len = byte_cnt + IWL_TX_CRC_SIZE + IWL_TX_DELIMITER_SIZE;
-        __le16 bc_ent;
-
-        WARN_ON(len > 0xFFF || write_ptr >= TFD_QUEUE_SIZE_MAX);
-
-        if (txq_id != IWL_CMD_QUEUE_NUM) {
-                sta_id = txq->cmd[txq->q.write_ptr]->cmd.tx.sta_id;
-                sec_ctl = txq->cmd[txq->q.write_ptr]->cmd.tx.sec_ctl;
-
-                switch (sec_ctl & TX_CMD_SEC_MSK) {
-                case TX_CMD_SEC_CCM:
-                        len += CCMP_MIC_LEN;
-                        break;
-                case TX_CMD_SEC_TKIP:
-                        len += TKIP_ICV_LEN;
-                        break;
-                case TX_CMD_SEC_WEP:
-                        len += WEP_IV_LEN + WEP_ICV_LEN;
-                        break;
-                }
-        }
-
-        bc_ent = cpu_to_le16((len & 0xFFF) | (sta_id << 12));
-
-        scd_bc_tbl[txq_id].tfd_offset[write_ptr] = bc_ent;
-
-        if (write_ptr < TFD_QUEUE_SIZE_BC_DUP)
-                scd_bc_tbl[txq_id].
-                        tfd_offset[TFD_QUEUE_SIZE_MAX + write_ptr] = bc_ent;
-}
-
-void iwl5000_txq_inval_byte_cnt_tbl(struct iwl_priv *priv,
-                                           struct iwl_tx_queue *txq)
-{
-        struct iwl5000_scd_bc_tbl *scd_bc_tbl = priv->scd_bc_tbls.addr;
-        int txq_id = txq->q.id;
-        int read_ptr = txq->q.read_ptr;
-        u8 sta_id = 0;
-        __le16 bc_ent;
-
-        WARN_ON(read_ptr >= TFD_QUEUE_SIZE_MAX);
-
-        if (txq_id != IWL_CMD_QUEUE_NUM)
-                sta_id = txq->cmd[read_ptr]->cmd.tx.sta_id;
-
-        bc_ent = cpu_to_le16(1 | (sta_id << 12));
-        scd_bc_tbl[txq_id].tfd_offset[read_ptr] = bc_ent;
-
-        if (read_ptr < TFD_QUEUE_SIZE_BC_DUP)
-                scd_bc_tbl[txq_id].
-                        tfd_offset[TFD_QUEUE_SIZE_MAX + read_ptr] = bc_ent;
-}
-
-static int iwl5000_tx_queue_set_q2ratid(struct iwl_priv *priv, u16 ra_tid,
-                                        u16 txq_id)
-{
-        u32 tbl_dw_addr;
-        u32 tbl_dw;
-        u16 scd_q2ratid;
-
-        scd_q2ratid = ra_tid & IWL_SCD_QUEUE_RA_TID_MAP_RATID_MSK;
-
-        tbl_dw_addr = priv->scd_base_addr +
-                        IWL50_SCD_TRANSLATE_TBL_OFFSET_QUEUE(txq_id);
-
-        tbl_dw = iwl_read_targ_mem(priv, tbl_dw_addr);
-
-        if (txq_id & 0x1)
-                tbl_dw = (scd_q2ratid << 16) | (tbl_dw & 0x0000FFFF);
-        else
-                tbl_dw = scd_q2ratid | (tbl_dw & 0xFFFF0000);
-
-        iwl_write_targ_mem(priv, tbl_dw_addr, tbl_dw);
-
-        return 0;
-}
-static void iwl5000_tx_queue_stop_scheduler(struct iwl_priv *priv, u16 txq_id)
-{
-        /* Simply stop the queue, but don't change any configuration;
-         * the SCD_ACT_EN bit is the write-enable mask for the ACTIVE bit. */
-        iwl_write_prph(priv,
-                IWL50_SCD_QUEUE_STATUS_BITS(txq_id),
-                (0 << IWL50_SCD_QUEUE_STTS_REG_POS_ACTIVE)|
-                (1 << IWL50_SCD_QUEUE_STTS_REG_POS_SCD_ACT_EN));
-}
-
-int iwl5000_txq_agg_enable(struct iwl_priv *priv, int txq_id,
-                                  int tx_fifo, int sta_id, int tid, u16 ssn_idx)
-{
-        unsigned long flags;
-        u16 ra_tid;
-
-        if ((IWL50_FIRST_AMPDU_QUEUE > txq_id) ||
-            (IWL50_FIRST_AMPDU_QUEUE + priv->cfg->num_of_ampdu_queues
-             <= txq_id)) {
-                IWL_WARN(priv,
-                        "queue number out of range: %d, must be %d to %d\n",
-                        txq_id, IWL50_FIRST_AMPDU_QUEUE,
-                        IWL50_FIRST_AMPDU_QUEUE +
-                        priv->cfg->num_of_ampdu_queues - 1);
-                return -EINVAL;
-        }
-
-        ra_tid = BUILD_RAxTID(sta_id, tid);
-
-        /* Modify device's station table to Tx this TID */
-        iwl_sta_tx_modify_enable_tid(priv, sta_id, tid);
-
-        spin_lock_irqsave(&priv->lock, flags);
-
-        /* Stop this Tx queue before configuring it */
-        iwl5000_tx_queue_stop_scheduler(priv, txq_id);
-
-        /* Map receiver-address / traffic-ID to this queue */
-        iwl5000_tx_queue_set_q2ratid(priv, ra_tid, txq_id);
-
-        /* Set this queue as a chain-building queue */
-        iwl_set_bits_prph(priv, IWL50_SCD_QUEUECHAIN_SEL, (1<<txq_id));
-
-        /* enable aggregations for the queue */
-        iwl_set_bits_prph(priv, IWL50_SCD_AGGR_SEL, (1<<txq_id));
-
-        /* Place first TFD at index corresponding to start sequence number.
-         * Assumes that ssn_idx is valid (!= 0xFFF) */
-        priv->txq[txq_id].q.read_ptr = (ssn_idx & 0xff);
-        priv->txq[txq_id].q.write_ptr = (ssn_idx & 0xff);
-        iwl5000_set_wr_ptrs(priv, txq_id, ssn_idx);
-
-        /* Set up Tx window size and frame limit for this queue */
-        iwl_write_targ_mem(priv, priv->scd_base_addr +
-                        IWL50_SCD_CONTEXT_QUEUE_OFFSET(txq_id) +
-                        sizeof(u32),
-                        ((SCD_WIN_SIZE <<
-                        IWL50_SCD_QUEUE_CTX_REG2_WIN_SIZE_POS) &
-                        IWL50_SCD_QUEUE_CTX_REG2_WIN_SIZE_MSK) |
-                        ((SCD_FRAME_LIMIT <<
-                        IWL50_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_POS) &
-                        IWL50_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_MSK));
-
-        iwl_set_bits_prph(priv, IWL50_SCD_INTERRUPT_MASK, (1 << txq_id));
-
-        /* Set up Status area in SRAM, map to Tx DMA/FIFO, activate the queue */
-        iwl5000_tx_queue_set_status(priv, &priv->txq[txq_id], tx_fifo, 1);
-
-        spin_unlock_irqrestore(&priv->lock, flags);
-
-        return 0;
-}
-
-int iwl5000_txq_agg_disable(struct iwl_priv *priv, u16 txq_id,
-                                   u16 ssn_idx, u8 tx_fifo)
-{
-        if ((IWL50_FIRST_AMPDU_QUEUE > txq_id) ||
-            (IWL50_FIRST_AMPDU_QUEUE + priv->cfg->num_of_ampdu_queues
-             <= txq_id)) {
-                IWL_ERR(priv,
-                        "queue number out of range: %d, must be %d to %d\n",
-                        txq_id, IWL50_FIRST_AMPDU_QUEUE,
-                        IWL50_FIRST_AMPDU_QUEUE +
-                        priv->cfg->num_of_ampdu_queues - 1);
-                return -EINVAL;
-        }
-
-        iwl5000_tx_queue_stop_scheduler(priv, txq_id);
-
-        iwl_clear_bits_prph(priv, IWL50_SCD_AGGR_SEL, (1 << txq_id));
-
-        priv->txq[txq_id].q.read_ptr = (ssn_idx & 0xff);
-        priv->txq[txq_id].q.write_ptr = (ssn_idx & 0xff);
-        /* supposes that ssn_idx is valid (!= 0xFFF) */
-        iwl5000_set_wr_ptrs(priv, txq_id, ssn_idx);
-
-        iwl_clear_bits_prph(priv, IWL50_SCD_INTERRUPT_MASK, (1 << txq_id));
-        iwl_txq_ctx_deactivate(priv, txq_id);
-        iwl5000_tx_queue_set_status(priv, &priv->txq[txq_id], tx_fifo, 0);
-
-        return 0;
-}
-
-/*
- * Activate/Deactivate Tx DMA/FIFO channels according tx fifos mask
- * must be called under priv->lock and mac access
- */
-void iwl5000_txq_set_sched(struct iwl_priv *priv, u32 mask)
-{
-        iwl_write_prph(priv, IWL50_SCD_TXFACT, mask);
-}
-
-
 static inline u32 iwl5000_get_scd_ssn(struct iwl5000_tx_resp *tx_resp)
 {
         return le32_to_cpup((__le32 *)&tx_resp->status +
@@ -1063,11 +834,11 @@ static int iwl5000_hw_channel_switch(struct iwl_priv *priv, u16 channel)
 
 struct iwl_lib_ops iwl5000_lib = {
         .set_hw_params = iwl5000_hw_set_hw_params,
-        .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,
-        .txq_agg_enable = iwl5000_txq_agg_enable,
-        .txq_agg_disable = iwl5000_txq_agg_disable,
+        .txq_update_byte_cnt_tbl = iwlagn_txq_update_byte_cnt_tbl,
+        .txq_inval_byte_cnt_tbl = iwlagn_txq_inval_byte_cnt_tbl,
+        .txq_set_sched = iwlagn_txq_set_sched,
+        .txq_agg_enable = iwlagn_txq_agg_enable,
+        .txq_agg_disable = iwlagn_txq_agg_disable,
         .txq_attach_buf_to_tfd = iwl_hw_txq_attach_buf_to_tfd,
         .txq_free_tfd = iwl_hw_txq_free_tfd,
         .txq_init = iwl_hw_tx_queue_init,
@@ -1121,11 +892,11 @@ struct iwl_lib_ops iwl5000_lib = {
 
 static struct iwl_lib_ops iwl5150_lib = {
         .set_hw_params = iwl5000_hw_set_hw_params,
-        .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,
-        .txq_agg_enable = iwl5000_txq_agg_enable,
-        .txq_agg_disable = iwl5000_txq_agg_disable,
+        .txq_update_byte_cnt_tbl = iwlagn_txq_update_byte_cnt_tbl,
+        .txq_inval_byte_cnt_tbl = iwlagn_txq_inval_byte_cnt_tbl,
+        .txq_set_sched = iwlagn_txq_set_sched,
+        .txq_agg_enable = iwlagn_txq_agg_enable,
+        .txq_agg_disable = iwlagn_txq_agg_disable,
         .txq_attach_buf_to_tfd = iwl_hw_txq_attach_buf_to_tfd,
         .txq_free_tfd = iwl_hw_txq_free_tfd,
         .txq_init = iwl_hw_tx_queue_init,