226 lines
7.8 KiB
C
226 lines
7.8 KiB
C
/******************************************************************************
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*
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* This file is provided under a dual BSD/GPLv2 license. When using or
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* redistributing this file, you may do so under either license.
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*
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* GPL LICENSE SUMMARY
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*
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* Copyright(c) 2007 - 2011 Intel Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
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* USA
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*
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* The full GNU General Public License is included in this distribution
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* in the file called LICENSE.GPL.
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*
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* Contact Information:
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* Intel Linux Wireless <ilw@linux.intel.com>
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* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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*
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* BSD LICENSE
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*
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* Copyright(c) 2005 - 2011 Intel Corporation. All rights reserved.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*****************************************************************************/
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#ifndef __iwl_trans_h__
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#define __iwl_trans_h__
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/*This file includes the declaration that are exported from the transport
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* layer */
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struct iwl_priv;
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struct iwl_rxon_context;
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struct iwl_host_cmd;
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/**
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* struct iwl_trans_ops - transport specific operations
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* @start_device: allocates and inits all the resources for the transport
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* layer.
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* @prepare_card_hw: claim the ownership on the HW. Will be called during
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* probe.
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* @tx_start: starts and configures all the Tx fifo - usually done once the fw
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* is alive.
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* @stop_device:stops the whole device (embedded CPU put to reset)
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* @rx_free: frees the rx memory
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* @tx_free: frees the tx memory
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* @send_cmd:send a host command
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* @send_cmd_pdu:send a host command: flags can be CMD_*
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* @get_tx_cmd: returns a pointer to a new Tx cmd for the upper layer use
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* @tx: send an skb
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* @txq_agg_setup: setup a tx queue for AMPDU - will be called once the HW is
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* ready and a successful ADDBA response has been received.
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* @txq_agg_disable: de-configure a Tx queue to send AMPDUs
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* @kick_nic: remove the RESET from the embedded CPU and let it run
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* @sync_irq: the upper layer will typically disable interrupt and call this
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* handler. After this handler returns, it is guaranteed that all
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* the ISR / tasklet etc... have finished running and the transport
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* layer shall not pass any Rx.
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* @free: release all the ressource for the transport layer itself such as
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* irq, tasklet etc...
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*/
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struct iwl_trans_ops {
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int (*start_device)(struct iwl_priv *priv);
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int (*prepare_card_hw)(struct iwl_priv *priv);
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void (*stop_device)(struct iwl_priv *priv);
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void (*tx_start)(struct iwl_priv *priv);
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void (*tx_free)(struct iwl_priv *priv);
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void (*rx_free)(struct iwl_priv *priv);
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int (*send_cmd)(struct iwl_priv *priv, struct iwl_host_cmd *cmd);
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int (*send_cmd_pdu)(struct iwl_priv *priv, u8 id, u32 flags, u16 len,
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const void *data);
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struct iwl_tx_cmd * (*get_tx_cmd)(struct iwl_priv *priv, int txq_id);
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int (*tx)(struct iwl_priv *priv, struct sk_buff *skb,
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struct iwl_tx_cmd *tx_cmd, int txq_id, __le16 fc, bool ampdu,
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struct iwl_rxon_context *ctx);
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int (*txq_agg_disable)(struct iwl_priv *priv, u16 txq_id,
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u16 ssn_idx, u8 tx_fifo);
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void (*txq_agg_setup)(struct iwl_priv *priv, int sta_id, int tid,
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int frame_limit);
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void (*kick_nic)(struct iwl_priv *priv);
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void (*sync_irq)(struct iwl_priv *priv);
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void (*free)(struct iwl_priv *priv);
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};
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struct iwl_trans {
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const struct iwl_trans_ops *ops;
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struct iwl_priv *priv;
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};
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static inline int trans_start_device(struct iwl_trans *trans)
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{
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return trans->ops->start_device(trans->priv);
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}
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static inline int trans_prepare_card_hw(struct iwl_trans *trans)
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{
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return trans->ops->prepare_card_hw(trans->priv);
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}
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static inline void trans_stop_device(struct iwl_trans *trans)
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{
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trans->ops->stop_device(trans->priv);
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}
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static inline void trans_tx_start(struct iwl_trans *trans)
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{
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trans->ops->tx_start(trans->priv);
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}
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static inline void trans_rx_free(struct iwl_trans *trans)
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{
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trans->ops->rx_free(trans->priv);
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}
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static inline void trans_tx_free(struct iwl_trans *trans)
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{
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trans->ops->tx_free(trans->priv);
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}
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static inline int trans_send_cmd(struct iwl_trans *trans,
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struct iwl_host_cmd *cmd)
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{
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return trans->ops->send_cmd(trans->priv, cmd);
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}
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static inline int trans_send_cmd_pdu(struct iwl_trans *trans, u8 id, u32 flags,
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u16 len, const void *data)
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{
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return trans->ops->send_cmd_pdu(trans->priv, id, flags, len, data);
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}
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static inline struct iwl_tx_cmd *trans_get_tx_cmd(struct iwl_trans *trans,
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int txq_id)
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{
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return trans->ops->get_tx_cmd(trans->priv, txq_id);
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}
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static inline int trans_tx(struct iwl_trans *trans, struct sk_buff *skb,
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struct iwl_tx_cmd *tx_cmd, int txq_id, __le16 fc, bool ampdu,
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struct iwl_rxon_context *ctx)
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{
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return trans->ops->tx(trans->priv, skb, tx_cmd, txq_id, fc, ampdu, ctx);
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}
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static inline int trans_txq_agg_disable(struct iwl_trans *trans, u16 txq_id,
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u16 ssn_idx, u8 tx_fifo)
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{
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return trans->ops->txq_agg_disable(trans->priv, txq_id,
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ssn_idx, tx_fifo);
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}
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static inline void trans_txq_agg_setup(struct iwl_trans *trans, int sta_id,
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int tid, int frame_limit)
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{
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trans->ops->txq_agg_setup(trans->priv, sta_id, tid, frame_limit);
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}
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static inline void trans_kick_nic(struct iwl_trans *trans)
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{
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trans->ops->kick_nic(trans->priv);
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}
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static inline void trans_sync_irq(struct iwl_trans *trans)
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{
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trans->ops->sync_irq(trans->priv);
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}
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static inline void trans_free(struct iwl_trans *trans)
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{
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trans->ops->free(trans->priv);
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}
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int iwl_trans_register(struct iwl_trans *trans, struct iwl_priv *priv);
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/*TODO: this functions should NOT be exported from trans module - export it
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* until the reclaim flow will be brought to the transport module too */
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struct iwl_tx_queue;
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void iwlagn_txq_inval_byte_cnt_tbl(struct iwl_priv *priv,
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struct iwl_tx_queue *txq);
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#endif /* __iwl_trans_h__ */
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