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.
27 * Contact Information:
28 * Intel Linux Wireless <ilw@linux.intel.com>
29 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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 * @wake_any_queue: wake all the queues of a specfic context IWL_RXON_CTX_*
92 * @stop_device:stops the whole device (embedded CPU put to reset)
93 * @send_cmd:send a host command
94 * @send_cmd_pdu:send a host command: flags can be CMD_*
96 * @reclaim: free packet until ssn. Returns a list of freed packets.
97 * @tx_agg_alloc: allocate resources for a TX BA session
98 * @tx_agg_setup: setup a tx queue for AMPDU - will be called once the HW is
99 * ready and a successful ADDBA response has been received.
100 * @tx_agg_disable: de-configure a Tx queue to send AMPDUs
101 * @kick_nic: remove the RESET from the embedded CPU and let it run
102 * @free: release all the ressource for the transport layer itself such as
103 * irq, tasklet etc...
104 * @check_stuck_queue: check if a specific queue is stuck
105 * @wait_tx_queue_empty: wait until all tx queues are empty
106 * @dbgfs_register: add the dbgfs files under this directory. Files will be
107 * automatically deleted.
108 * @suspend: stop the device unless WoWLAN is configured
109 * @resume: resume activity of the device
111 struct iwl_trans_ops {
113 struct iwl_trans *(*alloc)(struct iwl_shared *shrd);
114 int (*request_irq)(struct iwl_trans *iwl_trans);
115 int (*start_device)(struct iwl_trans *trans);
116 int (*prepare_card_hw)(struct iwl_trans *trans);
117 void (*stop_device)(struct iwl_trans *trans);
118 void (*tx_start)(struct iwl_trans *trans);
120 void (*wake_any_queue)(struct iwl_trans *trans, u8 ctx);
122 int (*send_cmd)(struct iwl_trans *trans, struct iwl_host_cmd *cmd);
124 int (*send_cmd_pdu)(struct iwl_trans *trans, u8 id, u32 flags, u16 len,
126 int (*tx)(struct iwl_trans *trans, struct sk_buff *skb,
127 struct iwl_device_cmd *dev_cmd, u8 ctx, u8 sta_id);
128 void (*reclaim)(struct iwl_trans *trans, int sta_id, int tid,
129 int txq_id, int ssn, u32 status,
130 struct sk_buff_head *skbs);
132 int (*tx_agg_disable)(struct iwl_trans *trans,
133 enum iwl_rxon_context_id ctx, int sta_id,
135 int (*tx_agg_alloc)(struct iwl_trans *trans,
136 enum iwl_rxon_context_id ctx, int sta_id, int tid,
138 void (*tx_agg_setup)(struct iwl_trans *trans,
139 enum iwl_rxon_context_id ctx, int sta_id, int tid,
142 void (*kick_nic)(struct iwl_trans *trans);
144 void (*free)(struct iwl_trans *trans);
146 int (*dbgfs_register)(struct iwl_trans *trans, struct dentry* dir);
147 int (*check_stuck_queue)(struct iwl_trans *trans, int q);
148 int (*wait_tx_queue_empty)(struct iwl_trans *trans);
150 int (*suspend)(struct iwl_trans *trans);
151 int (*resume)(struct iwl_trans *trans);
155 * struct iwl_trans - transport common data
156 * @ops - pointer to iwl_trans_ops
157 * @shrd - pointer to iwl_shared which holds shared data from the upper layer
158 * @hcmd_lock: protects HCMD
161 const struct iwl_trans_ops *ops;
162 struct iwl_shared *shrd;
163 spinlock_t hcmd_lock;
165 /* pointer to trans specific struct */
166 /*Ensure that this pointer will always be aligned to sizeof pointer */
167 char trans_specific[0] __attribute__((__aligned__(sizeof(void *))));
170 static inline int iwl_trans_request_irq(struct iwl_trans *trans)
172 return trans->ops->request_irq(trans);
175 static inline int iwl_trans_start_device(struct iwl_trans *trans)
177 return trans->ops->start_device(trans);
180 static inline int iwl_trans_prepare_card_hw(struct iwl_trans *trans)
182 return trans->ops->prepare_card_hw(trans);
185 static inline void iwl_trans_stop_device(struct iwl_trans *trans)
187 trans->ops->stop_device(trans);
190 static inline void iwl_trans_tx_start(struct iwl_trans *trans)
192 trans->ops->tx_start(trans);
195 static inline void iwl_trans_wake_any_queue(struct iwl_trans *trans, u8 ctx)
197 trans->ops->wake_any_queue(trans, ctx);
201 static inline int iwl_trans_send_cmd(struct iwl_trans *trans,
202 struct iwl_host_cmd *cmd)
204 return trans->ops->send_cmd(trans, cmd);
207 static inline int iwl_trans_send_cmd_pdu(struct iwl_trans *trans, u8 id,
208 u32 flags, u16 len, const void *data)
210 return trans->ops->send_cmd_pdu(trans, id, flags, len, data);
213 static inline int iwl_trans_tx(struct iwl_trans *trans, struct sk_buff *skb,
214 struct iwl_device_cmd *dev_cmd, u8 ctx, u8 sta_id)
216 return trans->ops->tx(trans, skb, dev_cmd, ctx, sta_id);
219 static inline void iwl_trans_reclaim(struct iwl_trans *trans, int sta_id,
220 int tid, int txq_id, int ssn, u32 status,
221 struct sk_buff_head *skbs)
223 trans->ops->reclaim(trans, sta_id, tid, txq_id, ssn, status, skbs);
226 static inline int iwl_trans_tx_agg_disable(struct iwl_trans *trans,
227 enum iwl_rxon_context_id ctx,
230 return trans->ops->tx_agg_disable(trans, ctx, sta_id, tid);
233 static inline int iwl_trans_tx_agg_alloc(struct iwl_trans *trans,
234 enum iwl_rxon_context_id ctx,
235 int sta_id, int tid, u16 *ssn)
237 return trans->ops->tx_agg_alloc(trans, ctx, sta_id, tid, ssn);
241 static inline void iwl_trans_tx_agg_setup(struct iwl_trans *trans,
242 enum iwl_rxon_context_id ctx,
246 trans->ops->tx_agg_setup(trans, ctx, sta_id, tid, frame_limit);
249 static inline void iwl_trans_kick_nic(struct iwl_trans *trans)
251 trans->ops->kick_nic(trans);
254 static inline void iwl_trans_free(struct iwl_trans *trans)
256 trans->ops->free(trans);
259 static inline int iwl_trans_wait_tx_queue_empty(struct iwl_trans *trans)
261 return trans->ops->wait_tx_queue_empty(trans);
264 static inline int iwl_trans_check_stuck_queue(struct iwl_trans *trans, int q)
266 return trans->ops->check_stuck_queue(trans, q);
268 static inline int iwl_trans_dbgfs_register(struct iwl_trans *trans,
271 return trans->ops->dbgfs_register(trans, dir);
274 static inline int iwl_trans_suspend(struct iwl_trans *trans)
276 return trans->ops->suspend(trans);
279 static inline int iwl_trans_resume(struct iwl_trans *trans)
281 return trans->ops->resume(trans);
284 /*****************************************************
285 * Transport layers implementations
286 ******************************************************/
287 extern const struct iwl_trans_ops trans_ops_pcie;
289 #endif /* __iwl_trans_h__ */