iwl3945: sync tx queue data structure with iwlagn

We are now using the iwl_tx_queue for iwl3945. To reach that goal, we
included the 3945 specific tfd frame structure to iwl_tx_queue. This
has no effect on the current iwlagn code.
Signed-off-by: Samuel Ortiz <samuel.ortiz@intel.com>
Signed-off-by: Abhijeet Kolekar <abhijeet.kolekar@intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/iwlwifi/iwl-3945-hw.h

@@ -240,7 +240,6 @@ struct iwl3945_eeprom {
 
 #define TFD_QUEUE_MIN           0
 #define TFD_QUEUE_MAX           6
-#define TFD_QUEUE_SIZE_MAX      (256)
 
 #define IWL_NUM_SCAN_RATES         (2)
 
@@ -262,9 +261,6 @@ struct iwl3945_eeprom {
 #define TFD_CTL_PAD_SET(n)         (n << 28)
 #define TFD_CTL_PAD_GET(ctl)       (ctl >> 28)
 
-#define TFD_TX_CMD_SLOTS 256
-#define TFD_CMD_SLOTS 32
-
 /*
  * RX related structures and functions
  */

drivers/net/wireless/iwlwifi/iwl-3945.c

@@ -306,7 +306,7 @@ int iwl3945_rs_next_rate(struct iwl_priv *priv, int rate)
 static void iwl3945_tx_queue_reclaim(struct iwl_priv *priv,
 				     int txq_id, int index)
 {
-	struct iwl3945_tx_queue *txq = &priv->txq39[txq_id];
+	struct iwl_tx_queue *txq = &priv->txq[txq_id];
 	struct iwl_queue *q = &txq->q;
 	struct iwl_tx_info *tx_info;
 
@@ -337,7 +337,7 @@ static void iwl3945_rx_reply_tx(struct iwl_priv *priv,
 	u16 sequence = le16_to_cpu(pkt->hdr.sequence);
 	int txq_id = SEQ_TO_QUEUE(sequence);
 	int index = SEQ_TO_INDEX(sequence);
-	struct iwl3945_tx_queue *txq = &priv->txq39[txq_id];
+	struct iwl_tx_queue *txq = &priv->txq[txq_id];
 	struct ieee80211_tx_info *info;
 	struct iwl3945_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
 	u32  status = le32_to_cpu(tx_resp->status);
@@ -756,9 +756,9 @@ int iwl3945_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv, void *ptr,
  *
  * Does NOT advance any indexes
  */
-int iwl3945_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl3945_tx_queue *txq)
+int iwl3945_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq)
 {
-	struct iwl3945_tfd *tfd_tmp = (struct iwl3945_tfd *)&txq->tfds[0];
+	struct iwl3945_tfd *tfd_tmp = (struct iwl3945_tfd *)&txq->tfds39[0];
 	struct iwl3945_tfd *tfd = &tfd_tmp[txq->q.read_ptr];
 	struct pci_dev *dev = priv->pci_dev;
 	int i;
@@ -1061,7 +1061,7 @@ static int iwl3945_txq_ctx_reset(struct iwl_priv *priv)
 	for (txq_id = 0; txq_id < TFD_QUEUE_MAX; txq_id++) {
 		slots_num = (txq_id == IWL_CMD_QUEUE_NUM) ?
 				TFD_CMD_SLOTS : TFD_TX_CMD_SLOTS;
-		rc = iwl3945_tx_queue_init(priv, &priv->txq39[txq_id], slots_num,
+		rc = iwl3945_tx_queue_init(priv, &priv->txq[txq_id], slots_num,
 				txq_id);
 		if (rc) {
 			IWL_ERR(priv, "Tx %d queue init failed\n", txq_id);
@@ -1251,7 +1251,7 @@ void iwl3945_hw_txq_ctx_free(struct iwl_priv *priv)
 
 	/* Tx queues */
 	for (txq_id = 0; txq_id < TFD_QUEUE_MAX; txq_id++)
-		iwl3945_tx_queue_free(priv, &priv->txq39[txq_id]);
+		iwl3945_tx_queue_free(priv, &priv->txq[txq_id]);
 }
 
 void iwl3945_hw_txq_ctx_stop(struct iwl_priv *priv)
@@ -2342,7 +2342,7 @@ int iwl3945_hw_rxq_stop(struct iwl_priv *priv)
 	return 0;
 }
 
-int iwl3945_hw_tx_queue_init(struct iwl_priv *priv, struct iwl3945_tx_queue *txq)
+int iwl3945_hw_tx_queue_init(struct iwl_priv *priv, struct iwl_tx_queue *txq)
 {
 	int rc;
 	unsigned long flags;

drivers/net/wireless/iwlwifi/iwl-3945.h

@@ -219,9 +219,9 @@ extern void iwl3945_rx_queue_reset(struct iwl_priv *priv,
 extern int iwl3945_calc_db_from_ratio(int sig_ratio);
 extern int iwl3945_calc_sig_qual(int rssi_dbm, int noise_dbm);
 extern int iwl3945_tx_queue_init(struct iwl_priv *priv,
-			     struct iwl3945_tx_queue *txq, int count, u32 id);
+			     struct iwl_tx_queue *txq, int count, u32 id);
 extern void iwl3945_rx_replenish(void *data);
-extern void iwl3945_tx_queue_free(struct iwl_priv *priv, struct iwl3945_tx_queue *txq);
+extern void iwl3945_tx_queue_free(struct iwl_priv *priv, struct iwl_tx_queue *txq);
 extern int iwl3945_send_cmd_pdu(struct iwl_priv *priv, u8 id, u16 len,
 			    const void *data);
 extern int __must_check iwl3945_send_cmd(struct iwl_priv *priv,
@@ -270,10 +270,10 @@ extern void iwl3945_hw_txq_ctx_stop(struct iwl_priv *priv);
 extern int iwl3945_hw_nic_reset(struct iwl_priv *priv);
 extern int iwl3945_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv, void *tfd,
 					dma_addr_t addr, u16 len);
-extern int iwl3945_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl3945_tx_queue *txq);
+extern int iwl3945_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq);
 extern int iwl3945_hw_get_temperature(struct iwl_priv *priv);
 extern int iwl3945_hw_tx_queue_init(struct iwl_priv *priv,
-				struct iwl3945_tx_queue *txq);
+				struct iwl_tx_queue *txq);
 extern unsigned int iwl3945_hw_get_beacon_cmd(struct iwl_priv *priv,
 				 struct iwl3945_frame *frame, u8 rate);
 void iwl3945_hw_build_tx_cmd_rate(struct iwl_priv *priv, struct iwl_cmd *cmd,

drivers/net/wireless/iwlwifi/iwl-4965-hw.h

@@ -114,9 +114,6 @@
 #define RX_QUEUE_MASK                         255
 #define RX_QUEUE_SIZE_LOG                     8
 
-#define TFD_TX_CMD_SLOTS 256
-#define TFD_CMD_SLOTS 32
-
 /*
  * RX related structures and functions
  */

drivers/net/wireless/iwlwifi/iwl-dev.h

@@ -134,9 +134,13 @@ struct iwl_tx_info {
  * A Tx queue consists of circular buffer of BDs (a.k.a. TFDs, transmit frame
  * descriptors) and required locking structures.
  */
+#define TFD_TX_CMD_SLOTS 256
+#define TFD_CMD_SLOTS 32
+
 struct iwl_tx_queue {
 	struct iwl_queue q;
 	struct iwl_tfd *tfds;
+	struct iwl3945_tfd *tfds39;
 	struct iwl_cmd *cmd[TFD_TX_CMD_SLOTS];
 	struct iwl_tx_info *txb;
 	u8 need_update;
@@ -226,28 +230,6 @@ struct iwl_channel_info {
 	struct iwl3945_scan_power_info scan_pwr_info[IWL_NUM_SCAN_RATES];
 };
 
-/**
- * struct iwl3945_tx_queue - Tx Queue for DMA
- * @q: generic Rx/Tx queue descriptor
- * @bd: base of circular buffer of TFDs
- * @cmd: array of command/Tx buffers
- * @dma_addr_cmd: physical address of cmd/tx buffer array
- * @txb: array of per-TFD driver data
- * @need_update: indicates need to update read/write index
- *
- * A Tx queue consists of circular buffer of BDs (a.k.a. TFDs, transmit frame
- * descriptors) and required locking structures.
- */
-struct iwl3945_tx_queue {
-	struct iwl_queue q;
-	struct iwl3945_tfd *tfds;
-	struct iwl_cmd *cmd;
-	dma_addr_t dma_addr_cmd;
-	struct iwl_tx_info *txb;
-	int need_update;
-	int active;
-};
-
 #define IWL_TX_FIFO_AC0	0
 #define IWL_TX_FIFO_AC1	1
 #define IWL_TX_FIFO_AC2	2
@@ -1099,8 +1081,6 @@ struct iwl_priv {
 	struct iwl3945_rxon_cmd staging39_rxon;
 	struct iwl3945_rxon_cmd recovery39_rxon;
 
-	struct iwl3945_tx_queue txq39[IWL39_MAX_NUM_QUEUES];
-
 	struct iwl3945_power_mgr power_data_39;
 	struct iwl3945_notif_statistics statistics_39;
 

drivers/net/wireless/iwlwifi/iwl-fh.h

@@ -478,6 +478,17 @@ struct iwl_tfd {
 	__le32 __pad;
 } __attribute__ ((packed));
 
+struct iwl3945_tfd_frame_data {
+	__le32 addr;
+	__le32 len;
+} __attribute__ ((packed));
+
+struct iwl3945_tfd_frame {
+	__le32 control_flags;
+	struct iwl3945_tfd_frame_data pa[4];
+	u8 reserved[28];
+} __attribute__ ((packed));
+
 
 /* Keep Warm Size */
 #define IWL_KW_SIZE 0x1000	/* 4k */