diff options
Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/pcie/tx.c')
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/pcie/tx.c | 75 |
1 files changed, 63 insertions, 12 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/tx.c b/drivers/net/wireless/intel/iwlwifi/pcie/tx.c index ee990a7a5411..9fbd37d23e85 100644 --- a/drivers/net/wireless/intel/iwlwifi/pcie/tx.c +++ b/drivers/net/wireless/intel/iwlwifi/pcie/tx.c @@ -1,12 +1,14 @@ /****************************************************************************** * + * 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) 2003 - 2014 Intel Corporation. All rights reserved. * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH * Copyright(c) 2016 - 2017 Intel Deutschland GmbH - * Copyright(c) 2018 Intel Corporation - * - * Portions of this file are derived from the ipw3945 project, as well - * as portions of the ieee80211 subsystem header files. + * Copyright(c) 2018 - 2019 Intel Corporation * * 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 @@ -18,12 +20,46 @@ * more details. * * The full GNU General Public License is included in this distribution in the - * file called LICENSE. + * file called COPYING. * * Contact Information: * Intel Linux Wireless <linuxwifi@intel.com> * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 * + * BSD LICENSE + * + * Copyright(c) 2003 - 2014 Intel Corporation. All rights reserved. + * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH + * Copyright(c) 2016 - 2017 Intel Deutschland GmbH + * Copyright(c) 2018 - 2019 Intel Corporation + * 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. + * *****************************************************************************/ #include <linux/etherdevice.h> #include <linux/ieee80211.h> @@ -959,7 +995,11 @@ static int iwl_pcie_tx_alloc(struct iwl_trans *trans) txq_id++) { bool cmd_queue = (txq_id == trans_pcie->cmd_queue); - slots_num = cmd_queue ? TFD_CMD_SLOTS : TFD_TX_CMD_SLOTS; + if (cmd_queue) + slots_num = max_t(u32, TFD_CMD_SLOTS, + trans->cfg->min_txq_size); + else + slots_num = TFD_TX_CMD_SLOTS; trans_pcie->txq[txq_id] = &trans_pcie->txq_memory[txq_id]; ret = iwl_pcie_txq_alloc(trans, trans_pcie->txq[txq_id], slots_num, cmd_queue); @@ -1008,7 +1048,11 @@ int iwl_pcie_tx_init(struct iwl_trans *trans) txq_id++) { bool cmd_queue = (txq_id == trans_pcie->cmd_queue); - slots_num = cmd_queue ? TFD_CMD_SLOTS : TFD_TX_CMD_SLOTS; + if (cmd_queue) + slots_num = max_t(u32, TFD_CMD_SLOTS, + trans->cfg->min_txq_size); + else + slots_num = TFD_TX_CMD_SLOTS; ret = iwl_pcie_txq_init(trans, trans_pcie->txq[txq_id], slots_num, cmd_queue); if (ret) { @@ -1138,6 +1182,15 @@ void iwl_trans_pcie_reclaim(struct iwl_trans *trans, int txq_id, int ssn, skb_queue_splice_init(&txq->overflow_q, &overflow_skbs); /* + * We are going to transmit from the overflow queue. + * Remember this state so that wait_for_txq_empty will know we + * are adding more packets to the TFD queue. It cannot rely on + * the state of &txq->overflow_q, as we just emptied it, but + * haven't TXed the content yet. + */ + txq->overflow_tx = true; + + /* * This is tricky: we are in reclaim path which is non * re-entrant, so noone will try to take the access the * txq data from that path. We stopped tx, so we can't @@ -1165,6 +1218,7 @@ void iwl_trans_pcie_reclaim(struct iwl_trans *trans, int txq_id, int ssn, iwl_wake_queue(trans, txq); spin_lock_bh(&txq->lock); + txq->overflow_tx = false; } if (txq->read_ptr == txq->write_ptr) { @@ -1906,9 +1960,7 @@ static int iwl_pcie_send_hcmd_sync(struct iwl_trans *trans, iwl_get_cmd_string(trans, cmd->id)); ret = -ETIMEDOUT; - iwl_force_nmi(trans); - iwl_trans_fw_error(trans); - + iwl_trans_sync_nmi(trans); goto cancel; } @@ -2438,8 +2490,7 @@ int iwl_trans_pcie_tx(struct iwl_trans *trans, struct sk_buff *skb, } /* building the A-MSDU might have changed this data, so memcpy it now */ - memcpy(&txq->first_tb_bufs[txq->write_ptr], &dev_cmd->hdr, - IWL_FIRST_TB_SIZE); + memcpy(&txq->first_tb_bufs[txq->write_ptr], dev_cmd, IWL_FIRST_TB_SIZE); tfd = iwl_pcie_get_tfd(trans, txq, txq->write_ptr); /* Set up entry for this TFD in Tx byte-count array */ |