1 /******************************************************************************
3 * This file is provided under a dual BSD/GPLv2 license. When using or
4 * redistributing this file, you may do so under either license.
8 * Copyright(c) 2007 - 2011 Intel Corporation. All rights reserved.
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of version 2 of the GNU General Public License as
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15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
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20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
24 * The full GNU General Public License is included in this distribution
25 * in the file called LICENSE.GPL.
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28 * Intel Linux Wireless <ilw@linux.intel.com>
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62 *****************************************************************************/
63 #ifndef __iwl_trans_h__
64 #define __iwl_trans_h__
66 #include <linux/debugfs.h>
68 /*This file includes the declaration that are exported from the transport
72 struct iwl_rxon_context;
77 * struct iwl_trans_ops - transport specific operations
78 * @alloc: allocates the meta data (not the queues themselves)
79 * @request_irq: requests IRQ - will be called before the FW load in probe flow
80 * @start_device: allocates and inits all the resources for the transport
82 * @prepare_card_hw: claim the ownership on the HW. Will be called during
84 * @tx_start: starts and configures all the Tx fifo - usually done once the fw
86 * @stop_device:stops the whole device (embedded CPU put to reset)
87 * @rx_free: frees the rx memory
88 * @tx_free: frees the tx memory
89 * @send_cmd:send a host command
90 * @send_cmd_pdu:send a host command: flags can be CMD_*
91 * @get_tx_cmd: returns a pointer to a new Tx cmd for the upper layer use
93 * @txq_agg_setup: setup a tx queue for AMPDU - will be called once the HW is
94 * ready and a successful ADDBA response has been received.
95 * @txq_agg_disable: de-configure a Tx queue to send AMPDUs
96 * @kick_nic: remove the RESET from the embedded CPU and let it run
97 * @disable_sync_irq: Disable and sync: after this handler returns, it is
98 * guaranteed that all the ISR / tasklet etc... have finished running
99 * and the transport layer shall not pass any Rx.
100 * @free: release all the ressource for the transport layer itself such as
101 * irq, tasklet etc...
102 * @dbgfs_register: add the dbgfs files under this directory. Files will be
103 * automatically deleted.
104 * @suspend: stop the device unless WoWLAN is configured
105 * @resume: resume activity of the device
107 struct iwl_trans_ops {
109 struct iwl_trans *(*alloc)(struct iwl_shared *shrd);
110 int (*request_irq)(struct iwl_trans *iwl_trans);
111 int (*start_device)(struct iwl_priv *priv);
112 int (*prepare_card_hw)(struct iwl_priv *priv);
113 void (*stop_device)(struct iwl_priv *priv);
114 void (*tx_start)(struct iwl_priv *priv);
115 void (*tx_free)(struct iwl_priv *priv);
116 void (*rx_free)(struct iwl_trans *trans);
118 int (*send_cmd)(struct iwl_priv *priv, struct iwl_host_cmd *cmd);
120 int (*send_cmd_pdu)(struct iwl_priv *priv, u8 id, u32 flags, u16 len,
122 struct iwl_tx_cmd * (*get_tx_cmd)(struct iwl_priv *priv, int txq_id);
123 int (*tx)(struct iwl_priv *priv, struct sk_buff *skb,
124 struct iwl_tx_cmd *tx_cmd, int txq_id, __le16 fc, bool ampdu,
125 struct iwl_rxon_context *ctx);
127 int (*txq_agg_disable)(struct iwl_priv *priv, u16 txq_id,
128 u16 ssn_idx, u8 tx_fifo);
129 void (*txq_agg_setup)(struct iwl_priv *priv, int sta_id, int tid,
132 void (*kick_nic)(struct iwl_priv *priv);
134 void (*disable_sync_irq)(struct iwl_trans *trans);
135 void (*free)(struct iwl_priv *priv);
137 int (*dbgfs_register)(struct iwl_trans *trans, struct dentry* dir);
138 int (*suspend)(struct iwl_trans *trans);
139 int (*resume)(struct iwl_trans *trans);
143 * struct iwl_trans - transport common data
144 * @ops - pointer to iwl_trans_ops
145 * @shrd - pointer to iwl_shared which holds shared data from the upper layer
148 const struct iwl_trans_ops *ops;
149 struct iwl_shared *shrd;
151 /* pointer to trans specific struct */
152 /*Ensure that this pointer will always be aligned to sizeof pointer */
153 char trans_specific[0] __attribute__((__aligned__(sizeof(void *))));
156 static inline int iwl_trans_request_irq(struct iwl_trans *trans)
158 return trans->ops->request_irq(trans);
161 static inline int iwl_trans_start_device(struct iwl_trans *trans)
163 return trans->ops->start_device(priv(trans));
166 static inline int iwl_trans_prepare_card_hw(struct iwl_trans *trans)
168 return trans->ops->prepare_card_hw(priv(trans));
171 static inline void iwl_trans_stop_device(struct iwl_trans *trans)
173 trans->ops->stop_device(priv(trans));
176 static inline void iwl_trans_tx_start(struct iwl_trans *trans)
178 trans->ops->tx_start(priv(trans));
181 static inline void iwl_trans_rx_free(struct iwl_trans *trans)
183 trans->ops->rx_free(trans);
186 static inline void iwl_trans_tx_free(struct iwl_trans *trans)
188 trans->ops->tx_free(priv(trans));
191 static inline int iwl_trans_send_cmd(struct iwl_trans *trans,
192 struct iwl_host_cmd *cmd)
194 return trans->ops->send_cmd(priv(trans), cmd);
197 static inline int iwl_trans_send_cmd_pdu(struct iwl_trans *trans, u8 id,
198 u32 flags, u16 len, const void *data)
200 return trans->ops->send_cmd_pdu(priv(trans), id, flags, len, data);
203 static inline struct iwl_tx_cmd *iwl_trans_get_tx_cmd(struct iwl_trans *trans,
206 return trans->ops->get_tx_cmd(priv(trans), txq_id);
209 static inline int iwl_trans_tx(struct iwl_trans *trans, struct sk_buff *skb,
210 struct iwl_tx_cmd *tx_cmd, int txq_id, __le16 fc, bool ampdu,
211 struct iwl_rxon_context *ctx)
213 return trans->ops->tx(priv(trans), skb, tx_cmd, txq_id, fc, ampdu, ctx);
216 static inline int iwl_trans_txq_agg_disable(struct iwl_trans *trans, u16 txq_id,
217 u16 ssn_idx, u8 tx_fifo)
219 return trans->ops->txq_agg_disable(priv(trans), txq_id,
223 static inline void iwl_trans_txq_agg_setup(struct iwl_trans *trans, int sta_id,
224 int tid, int frame_limit)
226 trans->ops->txq_agg_setup(priv(trans), sta_id, tid, frame_limit);
229 static inline void iwl_trans_kick_nic(struct iwl_trans *trans)
231 trans->ops->kick_nic(priv(trans));
234 static inline void iwl_trans_disable_sync_irq(struct iwl_trans *trans)
236 trans->ops->disable_sync_irq(trans);
239 static inline void iwl_trans_free(struct iwl_trans *trans)
241 trans->ops->free(priv(trans));
244 static inline int iwl_trans_dbgfs_register(struct iwl_trans *trans,
247 return trans->ops->dbgfs_register(trans, dir);
250 static inline int iwl_trans_suspend(struct iwl_trans *trans)
252 return trans->ops->suspend(trans);
255 static inline int iwl_trans_resume(struct iwl_trans *trans)
257 return trans->ops->resume(trans);
260 /*****************************************************
261 * Transport layers implementations
262 ******************************************************/
263 extern const struct iwl_trans_ops trans_ops_pcie;
265 /*TODO: this functions should NOT be exported from trans module - export it
266 * until the reclaim flow will be brought to the transport module too */
269 void iwlagn_txq_inval_byte_cnt_tbl(struct iwl_priv *priv,
270 struct iwl_tx_queue *txq);
272 #endif /* __iwl_trans_h__ */