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.
19 * You should have received a copy of the GNU General Public License
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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33 * Copyright(c) 2005 - 2011 Intel Corporation. All rights reserved.
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62 *****************************************************************************/
63 #ifndef __iwl_trans_h__
64 #define __iwl_trans_h__
66 #include <linux/debugfs.h>
67 #include <linux/skbuff.h>
69 #include "iwl-shared.h"
70 #include "iwl-commands.h"
72 /*This file includes the declaration that are exported from the transport
76 struct iwl_rxon_context;
79 struct iwl_device_cmd;
82 * struct iwl_trans_ops - transport specific operations
83 * @alloc: allocates the meta data (not the queues themselves)
84 * @request_irq: requests IRQ - will be called before the FW load in probe flow
85 * @start_device: allocates and inits all the resources for the transport
87 * @prepare_card_hw: claim the ownership on the HW. Will be called during
89 * @tx_start: starts and configures all the Tx fifo - usually done once the fw
91 * @stop_device:stops the whole device (embedded CPU put to reset)
92 * @send_cmd:send a host command
93 * @send_cmd_pdu:send a host command: flags can be CMD_*
95 * @reclaim: free packet until ssn. Returns a list of freed packets.
96 * @txq_agg_setup: setup a tx queue for AMPDU - will be called once the HW is
97 * ready and a successful ADDBA response has been received.
98 * @txq_agg_disable: de-configure a Tx queue to send AMPDUs
99 * @kick_nic: remove the RESET from the embedded CPU and let it run
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_trans *trans);
112 int (*prepare_card_hw)(struct iwl_trans *trans);
113 void (*stop_device)(struct iwl_trans *trans);
114 void (*tx_start)(struct iwl_trans *trans);
116 int (*send_cmd)(struct iwl_trans *trans, struct iwl_host_cmd *cmd);
118 int (*send_cmd_pdu)(struct iwl_trans *trans, u8 id, u32 flags, u16 len,
120 int (*tx)(struct iwl_priv *priv, struct sk_buff *skb,
121 struct iwl_device_cmd *dev_cmd,
122 int txq_id, __le16 fc, bool ampdu);
123 void (*reclaim)(struct iwl_trans *trans, int txq_id, int ssn,
124 u32 status, struct sk_buff_head *skbs);
126 int (*txq_agg_disable)(struct iwl_priv *priv, u16 txq_id);
127 void (*txq_agg_setup)(struct iwl_priv *priv,
128 enum iwl_rxon_context_id ctx, int sta_id,
129 int tid, int frame_limit);
131 void (*kick_nic)(struct iwl_trans *trans);
133 void (*free)(struct iwl_trans *trans);
135 int (*dbgfs_register)(struct iwl_trans *trans, struct dentry* dir);
136 int (*suspend)(struct iwl_trans *trans);
137 int (*resume)(struct iwl_trans *trans);
141 * struct iwl_trans - transport common data
142 * @ops - pointer to iwl_trans_ops
143 * @shrd - pointer to iwl_shared which holds shared data from the upper layer
144 * @hcmd_lock: protects HCMD
147 const struct iwl_trans_ops *ops;
148 struct iwl_shared *shrd;
149 spinlock_t hcmd_lock;
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(trans);
166 static inline int iwl_trans_prepare_card_hw(struct iwl_trans *trans)
168 return trans->ops->prepare_card_hw(trans);
171 static inline void iwl_trans_stop_device(struct iwl_trans *trans)
173 trans->ops->stop_device(trans);
176 static inline void iwl_trans_tx_start(struct iwl_trans *trans)
178 trans->ops->tx_start(trans);
181 static inline int iwl_trans_send_cmd(struct iwl_trans *trans,
182 struct iwl_host_cmd *cmd)
184 return trans->ops->send_cmd(trans, cmd);
187 static inline int iwl_trans_send_cmd_pdu(struct iwl_trans *trans, u8 id,
188 u32 flags, u16 len, const void *data)
190 return trans->ops->send_cmd_pdu(trans, id, flags, len, data);
193 static inline int iwl_trans_tx(struct iwl_trans *trans, struct sk_buff *skb,
194 struct iwl_device_cmd *dev_cmd,
195 int txq_id, __le16 fc, bool ampdu)
197 return trans->ops->tx(priv(trans), skb, dev_cmd, txq_id, fc, ampdu);
200 static inline void iwl_trans_reclaim(struct iwl_trans *trans, int txq_id,
202 struct sk_buff_head *skbs)
204 trans->ops->reclaim(trans, txq_id, ssn, status, skbs);
207 static inline int iwl_trans_txq_agg_disable(struct iwl_trans *trans, u16 txq_id)
209 return trans->ops->txq_agg_disable(priv(trans), txq_id);
212 static inline void iwl_trans_txq_agg_setup(struct iwl_trans *trans,
213 enum iwl_rxon_context_id ctx,
217 trans->ops->txq_agg_setup(priv(trans), ctx, sta_id, tid, frame_limit);
220 static inline void iwl_trans_kick_nic(struct iwl_trans *trans)
222 trans->ops->kick_nic(trans);
225 static inline void iwl_trans_free(struct iwl_trans *trans)
227 trans->ops->free(trans);
230 static inline int iwl_trans_dbgfs_register(struct iwl_trans *trans,
233 return trans->ops->dbgfs_register(trans, dir);
236 static inline int iwl_trans_suspend(struct iwl_trans *trans)
238 return trans->ops->suspend(trans);
241 static inline int iwl_trans_resume(struct iwl_trans *trans)
243 return trans->ops->resume(trans);
246 /*****************************************************
247 * Transport layers implementations
248 ******************************************************/
249 extern const struct iwl_trans_ops trans_ops_pcie;
251 #endif /* __iwl_trans_h__ */