new file mode 100644
@@ -0,0 +1,112 @@
+/******************************************************************************
+ *
+ * This file is provided under a dual BSD/GPLv2 license. When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2014 Intel Mobile Communications GmbH
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
+ * USA
+ *
+ * The full GNU General Public License is included in this distribution
+ * in the file called COPYING.
+ *
+ * Contact Information:
+ * Intel Linux Wireless <ilw@linux.intel.com>
+ * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2014 Intel Mobile Communications GmbH
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name Intel Corporation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *****************************************************************************/
+
+#ifndef __iwl_scd_h__
+#define __iwl_scd_h__
+
+#include "iwl-trans.h"
+#include "iwl-io.h"
+#include "iwl-prph.h"
+
+
+static inline void iwl_scd_txq_set_inactive(struct iwl_trans *trans,
+ u16 txq_id)
+{
+ iwl_write_prph(trans, SCD_QUEUE_STATUS_BITS(txq_id),
+ (0 << SCD_QUEUE_STTS_REG_POS_ACTIVE)|
+ (1 << SCD_QUEUE_STTS_REG_POS_SCD_ACT_EN));
+}
+
+static inline void iwl_scd_txq_set_chain(struct iwl_trans *trans,
+ u16 txq_id)
+{
+ iwl_set_bits_prph(trans, SCD_QUEUECHAIN_SEL, BIT(txq_id));
+}
+
+static inline void iwl_scd_txq_enable_agg(struct iwl_trans *trans,
+ u16 txq_id)
+{
+ iwl_set_bits_prph(trans, SCD_AGGR_SEL, BIT(txq_id));
+}
+
+static inline void iwl_scd_txq_disable_agg(struct iwl_trans *trans,
+ u16 txq_id)
+{
+ iwl_clear_bits_prph(trans, SCD_AGGR_SEL, BIT(txq_id));
+}
+
+static inline void iwl_scd_disable_agg(struct iwl_trans *trans)
+{
+ iwl_set_bits_prph(trans, SCD_AGGR_SEL, 0);
+}
+
+static inline void iwl_scd_activate_fifos(struct iwl_trans *trans)
+{
+ iwl_write_prph(trans, SCD_TXFACT, IWL_MASK(0, 7));
+}
+
+static inline void iwl_scd_deactivate_fifos(struct iwl_trans *trans)
+{
+ iwl_write_prph(trans, SCD_TXFACT, 0);
+}
+#endif
@@ -34,6 +34,7 @@
#include "iwl-csr.h"
#include "iwl-prph.h"
#include "iwl-io.h"
+#include "iwl-scd.h"
#include "iwl-op-mode.h"
#include "internal.h"
/* FIXME: need to abstract out TX command (once we know what it looks like) */
@@ -644,17 +645,6 @@ static void iwl_pcie_txq_free(struct iwl_trans *trans, int txq_id)
memset(txq, 0, sizeof(*txq));
}
-/*
- * Activate/Deactivate Tx DMA/FIFO channels according tx fifos mask
- */
-static void iwl_pcie_txq_set_sched(struct iwl_trans *trans, u32 mask)
-{
- struct iwl_trans_pcie __maybe_unused *trans_pcie =
- IWL_TRANS_GET_PCIE_TRANS(trans);
-
- iwl_write_prph(trans, SCD_TXFACT, mask);
-}
-
void iwl_pcie_tx_start(struct iwl_trans *trans, u32 scd_base_addr)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
@@ -692,7 +682,7 @@ void iwl_pcie_tx_start(struct iwl_trans *trans, u32 scd_base_addr)
trans_pcie->cmd_fifo);
/* Activate all Tx DMA/FIFO channels */
- iwl_pcie_txq_set_sched(trans, IWL_MASK(0, 7));
+ iwl_scd_activate_fifos(trans);
/* Enable DMA channel */
for (chan = 0; chan < FH_TCSR_CHNL_NUM; chan++)
@@ -745,7 +735,7 @@ int iwl_pcie_tx_stop(struct iwl_trans *trans)
/* Turn off all Tx DMA fifos */
spin_lock(&trans_pcie->irq_lock);
- iwl_pcie_txq_set_sched(trans, 0);
+ iwl_scd_deactivate_fifos(trans);
/* Stop each Tx DMA channel, and wait for it to be idle */
for (ch = 0; ch < FH_TCSR_CHNL_NUM; ch++) {
@@ -886,7 +876,7 @@ int iwl_pcie_tx_init(struct iwl_trans *trans)
spin_lock(&trans_pcie->irq_lock);
/* Turn off all Tx DMA fifos */
- iwl_write_prph(trans, SCD_TXFACT, 0);
+ iwl_scd_deactivate_fifos(trans);
/* Tell NIC where to find the "keep warm" buffer */
iwl_write_direct32(trans, FH_KW_MEM_ADDR_REG,
@@ -1072,17 +1062,6 @@ static int iwl_pcie_txq_set_ratid_map(struct iwl_trans *trans, u16 ra_tid,
return 0;
}
-static inline void iwl_pcie_txq_set_inactive(struct iwl_trans *trans,
- 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(trans,
- SCD_QUEUE_STATUS_BITS(txq_id),
- (0 << SCD_QUEUE_STTS_REG_POS_ACTIVE)|
- (1 << SCD_QUEUE_STTS_REG_POS_SCD_ACT_EN));
-}
-
/* Receiver address (actually, Rx station's index into station table),
* combined with Traffic ID (QOS priority), in format used by Tx Scheduler */
#define BUILD_RAxTID(sta_id, tid) (((sta_id) << 4) + (tid))
@@ -1096,11 +1075,11 @@ void iwl_trans_pcie_txq_enable(struct iwl_trans *trans, int txq_id, int fifo,
WARN_ONCE(1, "queue %d already used - expect issues", txq_id);
/* Stop this Tx queue before configuring it */
- iwl_pcie_txq_set_inactive(trans, txq_id);
+ iwl_scd_txq_set_inactive(trans, txq_id);
/* Set this queue as a chain-building queue unless it is CMD queue */
if (txq_id != trans_pcie->cmd_queue)
- iwl_set_bits_prph(trans, SCD_QUEUECHAIN_SEL, BIT(txq_id));
+ iwl_scd_txq_set_chain(trans, txq_id);
/* If this queue is mapped to a certain station: it is an AGG queue */
if (sta_id >= 0) {
@@ -1110,7 +1089,7 @@ void iwl_trans_pcie_txq_enable(struct iwl_trans *trans, int txq_id, int fifo,
iwl_pcie_txq_set_ratid_map(trans, ra_tid, txq_id);
/* enable aggregations for the queue */
- iwl_set_bits_prph(trans, SCD_AGGR_SEL, BIT(txq_id));
+ iwl_scd_txq_enable_agg(trans, txq_id);
trans_pcie->txq[txq_id].ampdu = true;
} else {
/*
@@ -1118,7 +1097,7 @@ void iwl_trans_pcie_txq_enable(struct iwl_trans *trans, int txq_id, int fifo,
* ra_tid mapping configuration irrelevant since it is now a
* non-AGG queue.
*/
- iwl_clear_bits_prph(trans, SCD_AGGR_SEL, BIT(txq_id));
+ iwl_scd_txq_disable_agg(trans, txq_id);
ssn = trans_pcie->txq[txq_id].q.read_ptr;
}
@@ -1172,7 +1151,7 @@ void iwl_trans_pcie_txq_disable(struct iwl_trans *trans, int txq_id)
return;
}
- iwl_pcie_txq_set_inactive(trans, txq_id);
+ iwl_scd_txq_set_inactive(trans, txq_id);
iwl_trans_write_mem(trans, stts_addr, (void *)zero_val,
ARRAY_SIZE(zero_val));