iwlwifi: move to TVQM mode

In TVQM firmware returns the value of the queue ID and code
should accept it.
The TX queue config API was changed. Move to new API.
This has to be done in parallel in mvm and pcie.
Do not move yet to 512 queues since there are some opens
with enabling it.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>

1 files changed, 42 insertions, 28 deletions

diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/tx-gen2.c b/drivers/net/wireless/intel/iwlwifi/pcie/tx-gen2.c
index 0bc9522cf364..9fb46a6f47cf 100644
--- a/drivers/net/wireless/intel/iwlwifi/pcie/tx-gen2.c
+++ b/drivers/net/wireless/intel/iwlwifi/pcie/tx-gen2.c
@@ -862,15 +862,15 @@ int iwl_trans_pcie_dyn_txq_alloc(struct iwl_trans *trans,
 				 unsigned int timeout)
 {
 	struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
+	struct iwl_tx_queue_cfg_rsp *rsp;
 	struct iwl_txq *txq;
 	struct iwl_host_cmd hcmd = {
 		.id = cmd_id,
 		.len = { sizeof(*cmd) },
 		.data = { cmd, },
-		.flags = 0,
+		.flags = CMD_WANT_SKB,
 	};
-	int ret, qid = cmd->scd_queue;
-	u16 ssn = le16_to_cpu(cmd->ssn);
+	int ret, qid;
 
 	txq = kzalloc(sizeof(*txq), GFP_KERNEL);
 	if (!txq)
@@ -883,48 +883,62 @@ int iwl_trans_pcie_dyn_txq_alloc(struct iwl_trans *trans,
 		return -ENOMEM;
 	}
 
-	if (test_and_set_bit(cmd->scd_queue, trans_pcie->queue_used)) {
-		WARN_ONCE(1, "queue %d already used", cmd->scd_queue);
-		return -EINVAL;
-	}
-
-	trans_pcie->txq[qid] = txq;
-	trans_pcie->txq[qid]->id = qid;
-
 	ret = iwl_pcie_txq_alloc(trans, txq, TFD_TX_CMD_SLOTS, false);
 	if (ret) {
-		IWL_ERR(trans, "Tx %d queue init failed\n", qid);
+		IWL_ERR(trans, "Tx queue alloc failed\n");
 		goto error;
 	}
 	ret = iwl_pcie_txq_init(trans, txq, TFD_TX_CMD_SLOTS, false);
 	if (ret) {
-		IWL_ERR(trans, "Tx %d queue alloc failed\n", qid);
+		IWL_ERR(trans, "Tx queue init failed\n");
 		goto error;
 	}
 
 	txq->wd_timeout = msecs_to_jiffies(timeout);
 
-	/*
-	 * Place first TFD at index corresponding to start sequence number.
-	 * Assumes that ssn_idx is valid (!= 0xFFF)
-	 */
-	txq->read_ptr = (ssn & 0xff);
-	txq->write_ptr = (ssn & 0xff);
-	iwl_write_direct32(trans, HBUS_TARG_WRPTR,
-			   (ssn & 0xff) | (cmd->scd_queue << 16));
-
-	IWL_DEBUG_TX_QUEUES(trans, "Activate queue %d WrPtr: %d\n",
-			    cmd->scd_queue, ssn & 0xff);
-
 	cmd->tfdq_addr = cpu_to_le64(txq->dma_addr);
 	cmd->byte_cnt_addr = cpu_to_le64(txq->bc_tbl.dma);
 	cmd->cb_size = cpu_to_le32(TFD_QUEUE_CB_SIZE(TFD_QUEUE_SIZE_MAX));
 
-	return iwl_trans_send_cmd(trans, &hcmd);
+	ret = iwl_trans_send_cmd(trans, &hcmd);
+	if (ret)
+		goto error;
+
+	if (WARN_ON(iwl_rx_packet_payload_len(hcmd.resp_pkt) != sizeof(*rsp))) {
+		ret = -EINVAL;
+		goto error;
+	}
+
+	rsp = (void *)hcmd.resp_pkt->data;
+	qid = le16_to_cpu(rsp->queue_number);
+
+	if (qid > ARRAY_SIZE(trans_pcie->txq)) {
+		WARN_ONCE(1, "queue index %d unsupported", qid);
+		ret = -EIO;
+		goto error;
+	}
+
+	if (test_and_set_bit(qid, trans_pcie->queue_used)) {
+		WARN_ONCE(1, "queue %d already used", qid);
+		ret = -EIO;
+		goto error;
+	}
+
+	txq->id = qid;
+	trans_pcie->txq[qid] = txq;
+
+	/* Place first TFD at index corresponding to start sequence number */
+	txq->read_ptr = le16_to_cpu(rsp->write_pointer);
+	txq->write_ptr = le16_to_cpu(rsp->write_pointer);
+	iwl_write_direct32(trans, HBUS_TARG_WRPTR,
+			   (txq->write_ptr) | (qid << 16));
+	IWL_DEBUG_TX_QUEUES(trans, "Activate queue %d\n", qid);
+
+	return qid;
 
 error:
-	iwl_pcie_gen2_txq_free(trans, cmd->scd_queue);
-	return -ENOMEM;
+	iwl_pcie_gen2_txq_free_memory(trans, txq);
+	return ret;
 }
 
 void iwl_trans_pcie_dyn_txq_free(struct iwl_trans *trans, int queue)