iwlwifi: move queue mapping out of transport

The queue mapping is not only dynamic, it
is also dependent on the uCode, as we can
already see today with the dual-mode and
non-dual-mode being different.

Move the queue mapping out of the transport
layer and let the higher layer manage it.
Part of the transport configuration is how
to set up the queues.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 19 insertions, 127 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-trans-pcie-int.h b/drivers/net/wireless/iwlwifi/iwl-trans-pcie-int.h
index 1c2fe87..5325ff7 100644
--- a/drivers/net/wireless/iwlwifi/iwl-trans-pcie-int.h
+++ b/drivers/net/wireless/iwlwifi/iwl-trans-pcie-int.h
@@ -136,13 +136,6 @@ static inline int iwl_queue_dec_wrap(int index, int n_bd)
 	return --index & (n_bd - 1);
 }
 
-/*
- * This queue number is required for proper operation
- * because the ucode will stop/start the scheduler as
- * required.
- */
-#define IWL_IPAN_MCAST_QUEUE		8
-
 struct iwl_cmd_meta {
 	/* only for SYNC commands, iff the reply skb is wanted */
 	struct iwl_host_cmd *source;
@@ -199,9 +192,6 @@ struct iwl_queue {
  * lock: queue lock
  * @time_stamp: time (in jiffies) of last read_ptr change
  * @need_update: indicates need to update read/write index
- * @sched_retry: indicates queue is high-throughput aggregation (HT AGG) enabled
- * @sta_id: valid if sched_retry is set
- * @tid: valid if sched_retry is set
  *
  * A Tx queue consists of circular buffer of BDs (a.k.a. TFDs, transmit frame
  * descriptors) and required locking structures.
@@ -218,12 +208,7 @@ struct iwl_tx_queue {
 	spinlock_t lock;
 	unsigned long time_stamp;
 	u8 need_update;
-	u8 sched_retry;
 	u8 active;
-	u8 swq_id;
-
-	u16 sta_id;
-	u16 tid;
 };
 
 /**
@@ -236,13 +221,6 @@ struct iwl_tx_queue {
  * @scd_base_addr: scheduler sram base address in SRAM
  * @scd_bc_tbls: pointer to the byte count table of the scheduler
  * @kw: keep warm address
- * @ac_to_fifo: to what fifo is a specifc AC mapped ?
- * @ac_to_queue: to what tx queue  is a specifc AC mapped ?
- * @mcast_queue:
- * @txq: Tx DMA processing queues
- * @txq_ctx_active_msk: what queue is active
- * queue_stopped: tracks what queue is stopped
- * queue_stop_count: tracks what SW queue is stopped
  * @pci_dev: basic pci-network driver stuff
  * @hw_base: pci hardware address support
  * @ucode_write_complete: indicates that the ucode has been copied.
@@ -272,16 +250,9 @@ struct iwl_trans_pcie {
 	struct iwl_dma_ptr scd_bc_tbls;
 	struct iwl_dma_ptr kw;
 
-	const u8 *ac_to_fifo[NUM_IWL_RXON_CTX];
-	const u8 *ac_to_queue[NUM_IWL_RXON_CTX];
-	u8 mcast_queue[NUM_IWL_RXON_CTX];
-	u8 agg_txq[IWLAGN_STATION_COUNT][IWL_MAX_TID_COUNT];
-
 	struct iwl_tx_queue *txq;
-	unsigned long txq_ctx_active_msk;
-#define IWL_MAX_HW_QUEUES	32
+	unsigned long queue_used[BITS_TO_LONGS(IWL_MAX_HW_QUEUES)];
 	unsigned long queue_stopped[BITS_TO_LONGS(IWL_MAX_HW_QUEUES)];
-	atomic_t queue_stop_count[4];
 
 	/* PCI bus related data */
 	struct pci_dev *pci_dev;
@@ -293,6 +264,8 @@ struct iwl_trans_pcie {
 	u8 cmd_queue;
 	u8 n_no_reclaim_cmds;
 	u8 no_reclaim_cmds[MAX_NO_RECLAIM_CMDS];
+	u8 setup_q_to_fifo[IWL_MAX_HW_QUEUES];
+	u8 n_q_to_fifo;
 };
 
 #define IWL_TRANS_GET_PCIE_TRANS(_iwl_trans) \
@@ -331,15 +304,12 @@ void iwl_tx_cmd_complete(struct iwl_trans *trans,
 void iwl_trans_txq_update_byte_cnt_tbl(struct iwl_trans *trans,
 					   struct iwl_tx_queue *txq,
 					   u16 byte_cnt);
-int iwl_trans_pcie_tx_agg_disable(struct iwl_trans *trans,
-				  int sta_id, int tid);
+void iwl_trans_pcie_tx_agg_disable(struct iwl_trans *trans, int queue);
 void iwl_trans_set_wr_ptrs(struct iwl_trans *trans, int txq_id, u32 index);
 void iwl_trans_tx_queue_set_status(struct iwl_trans *trans,
-			     struct iwl_tx_queue *txq,
-			     int tx_fifo_id, int scd_retry);
-int iwl_trans_pcie_tx_agg_alloc(struct iwl_trans *trans, int sta_id, int tid);
-void iwl_trans_pcie_tx_agg_setup(struct iwl_trans *trans,
-				 enum iwl_rxon_context_id ctx,
+				   struct iwl_tx_queue *txq,
+				   int tx_fifo_id, bool active);
+void iwl_trans_pcie_tx_agg_setup(struct iwl_trans *trans, int queue, int fifo,
 				 int sta_id, int tid, int frame_limit, u16 ssn);
 void iwlagn_txq_free_tfd(struct iwl_trans *trans, struct iwl_tx_queue *txq,
 	int index, enum dma_data_direction dma_dir);
@@ -388,91 +358,28 @@ static inline void iwl_enable_rfkill_int(struct iwl_trans *trans)
 	iwl_write32(trans, CSR_INT_MASK, CSR_INT_BIT_RF_KILL);
 }
 
-/*
- * we have 8 bits used like this:
- *
- * 7 6 5 4 3 2 1 0
- * | | | | | | | |
- * | | | | | | +-+-------- AC queue (0-3)
- * | | | | | |
- * | +-+-+-+-+------------ HW queue ID
- * |
- * +---------------------- unused
- */
-static inline void iwl_set_swq_id(struct iwl_tx_queue *txq, u8 ac, u8 hwq)
-{
-	BUG_ON(ac > 3);   /* only have 2 bits */
-	BUG_ON(hwq > 31); /* only use 5 bits */
-
-	txq->swq_id = (hwq << 2) | ac;
-}
-
-static inline u8 iwl_get_queue_ac(struct iwl_tx_queue *txq)
-{
-	return txq->swq_id & 0x3;
-}
-
 static inline void iwl_wake_queue(struct iwl_trans *trans,
 				  struct iwl_tx_queue *txq)
 {
-	u8 queue = txq->swq_id;
-	u8 ac = queue & 3;
-	u8 hwq = (queue >> 2) & 0x1f;
-	struct iwl_trans_pcie *trans_pcie =
-		IWL_TRANS_GET_PCIE_TRANS(trans);
-
-	if (test_and_clear_bit(hwq, trans_pcie->queue_stopped)) {
-		if (atomic_dec_return(&trans_pcie->queue_stop_count[ac]) <= 0) {
-			iwl_op_mode_queue_not_full(trans->op_mode, ac);
-			IWL_DEBUG_TX_QUEUES(trans, "Wake hwq %d ac %d",
-					    hwq, ac);
-		} else {
-			IWL_DEBUG_TX_QUEUES(trans,
-				"Don't wake hwq %d ac %d stop count %d",
-				hwq, ac,
-				atomic_read(&trans_pcie->queue_stop_count[ac]));
-		}
+	struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
+
+	if (test_and_clear_bit(txq->q.id, trans_pcie->queue_stopped)) {
+		IWL_DEBUG_TX_QUEUES(trans, "Wake hwq %d\n", txq->q.id);
+		iwl_op_mode_queue_not_full(trans->op_mode, txq->q.id);
 	}
 }
 
 static inline void iwl_stop_queue(struct iwl_trans *trans,
 				  struct iwl_tx_queue *txq)
 {
-	u8 queue = txq->swq_id;
-	u8 ac = queue & 3;
-	u8 hwq = (queue >> 2) & 0x1f;
-	struct iwl_trans_pcie *trans_pcie =
-		IWL_TRANS_GET_PCIE_TRANS(trans);
-
-	if (!test_and_set_bit(hwq, trans_pcie->queue_stopped)) {
-		if (atomic_inc_return(&trans_pcie->queue_stop_count[ac]) > 0) {
-			iwl_op_mode_queue_full(trans->op_mode, ac);
-			IWL_DEBUG_TX_QUEUES(trans,
-				"Stop hwq %d ac %d stop count %d",
-				hwq, ac,
-				atomic_read(&trans_pcie->queue_stop_count[ac]));
-		} else {
-			IWL_DEBUG_TX_QUEUES(trans,
-				"Don't stop hwq %d ac %d stop count %d",
-				hwq, ac,
-				atomic_read(&trans_pcie->queue_stop_count[ac]));
-		}
-	} else {
-		IWL_DEBUG_TX_QUEUES(trans, "stop hwq %d, but it is stopped",
-				    hwq);
-	}
-}
-
-static inline void iwl_txq_ctx_activate(struct iwl_trans_pcie *trans_pcie,
-					int txq_id)
-{
-	set_bit(txq_id, &trans_pcie->txq_ctx_active_msk);
-}
+	struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
 
-static inline void iwl_txq_ctx_deactivate(struct iwl_trans_pcie *trans_pcie,
-					  int txq_id)
-{
-	clear_bit(txq_id, &trans_pcie->txq_ctx_active_msk);
+	if (!test_and_set_bit(txq->q.id, trans_pcie->queue_stopped)) {
+		iwl_op_mode_queue_full(trans->op_mode, txq->q.id);
+		IWL_DEBUG_TX_QUEUES(trans, "Stop hwq %d\n", txq->q.id);
+	} else
+		IWL_DEBUG_TX_QUEUES(trans, "hwq %d already stopped\n",
+				    txq->q.id);
 }
 
 static inline int iwl_queue_used(const struct iwl_queue *q, int i)
@@ -487,19 +394,4 @@ static inline u8 get_cmd_index(struct iwl_queue *q, u32 index)
 	return index & (q->n_window - 1);
 }
 
-#define IWL_TX_FIFO_BK		0	/* shared */
-#define IWL_TX_FIFO_BE		1
-#define IWL_TX_FIFO_VI		2	/* shared */
-#define IWL_TX_FIFO_VO		3
-#define IWL_TX_FIFO_BK_IPAN	IWL_TX_FIFO_BK
-#define IWL_TX_FIFO_BE_IPAN	4
-#define IWL_TX_FIFO_VI_IPAN	IWL_TX_FIFO_VI
-#define IWL_TX_FIFO_VO_IPAN	5
-/* re-uses the VO FIFO, uCode will properly flush/schedule */
-#define IWL_TX_FIFO_AUX		5
-#define IWL_TX_FIFO_UNUSED	-1
-
-/* AUX (TX during scan dwell) queue */
-#define IWL_AUX_QUEUE		10
-
 #endif /* __iwl_trans_int_pcie_h__ */