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 - 2012 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
12 * published by the Free Software Foundation.
14 * This program is distributed in the hope that it will be useful, but
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 - 2012 Intel Corporation. All rights reserved.
34 * All rights reserved.
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37 * modification, are permitted provided that the following conditions
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48 * from this software without specific prior written permission.
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51 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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60 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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
78 #define SEQ_TO_SN(seq) (((seq) & IEEE80211_SCTL_SEQ) >> 4)
79 #define SN_TO_SEQ(ssn) (((ssn) << 4) & IEEE80211_SCTL_SEQ)
80 #define MAX_SN ((IEEE80211_SCTL_SEQ) >> 4)
85 CMD_WANT_SKB = BIT(1),
86 CMD_ON_DEMAND = BIT(2),
89 #define DEF_CMD_PAYLOAD_SIZE 320
92 * struct iwl_device_cmd
94 * For allocation of the command and tx queues, this establishes the overall
95 * size of the largest command we send to uCode, except for commands that
96 * aren't fully copied and use other TFD space.
98 struct iwl_device_cmd {
99 struct iwl_cmd_header hdr; /* uCode API */
100 u8 payload[DEF_CMD_PAYLOAD_SIZE];
103 #define TFD_MAX_PAYLOAD_SIZE (sizeof(struct iwl_device_cmd))
105 #define IWL_MAX_CMD_TFDS 2
107 enum iwl_hcmd_dataflag {
108 IWL_HCMD_DFL_NOCOPY = BIT(0),
112 * struct iwl_host_cmd - Host command to the uCode
113 * @data: array of chunks that composes the data of the host command
114 * @reply_page: pointer to the page that holds the response to the host command
115 * @handler_status: return value of the handler of the command
116 * (put in setup_rx_handlers) - valid for SYNC mode only
118 * @flags: can be CMD_* note CMD_WANT_SKB is incompatible withe CMD_ASYNC
119 * @len: array of the lenths of the chunks in data
121 * @id: id of the host command
123 struct iwl_host_cmd {
124 const void *data[IWL_MAX_CMD_TFDS];
125 unsigned long reply_page;
129 u16 len[IWL_MAX_CMD_TFDS];
130 u8 dataflags[IWL_MAX_CMD_TFDS];
134 /* one for each uCode image (inst/data, boot/init/runtime) */
136 dma_addr_t p_addr; /* hardware address */
137 void *v_addr; /* software address */
138 u32 len; /* size in bytes */
142 struct fw_desc code; /* firmware code image */
143 struct fw_desc data; /* firmware data image */
147 * struct iwl_trans_ops - transport specific operations
148 * @start_hw: starts the HW- from that point on, the HW can send interrupts
149 * @stop_hw: stops the HW- from that point on, the HW will be in low power but
150 * will still issue interrupt if the HW RF kill is triggered.
151 * @start_fw: allocates and inits all the resources for the transport
152 * layer. Also kick a fw image. This handler may sleep.
153 * @fw_alive: called when the fw sends alive notification
154 * @wake_any_queue: wake all the queues of a specfic context IWL_RXON_CTX_*
155 * @stop_device:stops the whole device (embedded CPU put to reset)
156 * @send_cmd:send a host command
158 * @reclaim: free packet until ssn. Returns a list of freed packets.
159 * @tx_agg_alloc: allocate resources for a TX BA session
160 * @tx_agg_setup: setup a tx queue for AMPDU - will be called once the HW is
161 * ready and a successful ADDBA response has been received.
162 * @tx_agg_disable: de-configure a Tx queue to send AMPDUs
163 * @free: release all the ressource for the transport layer itself such as
164 * irq, tasklet etc...
165 * @stop_queue: stop a specific queue
166 * @check_stuck_queue: check if a specific queue is stuck
167 * @wait_tx_queue_empty: wait until all tx queues are empty
168 * @dbgfs_register: add the dbgfs files under this directory. Files will be
169 * automatically deleted.
170 * @suspend: stop the device unless WoWLAN is configured
171 * @resume: resume activity of the device
172 * @write8: write a u8 to a register at offset ofs from the BAR
173 * @write32: write a u32 to a register at offset ofs from the BAR
174 * @read32: read a u32 register at offset ofs from the BAR
176 struct iwl_trans_ops {
178 int (*start_hw)(struct iwl_trans *iwl_trans);
179 void (*stop_hw)(struct iwl_trans *iwl_trans);
180 int (*start_fw)(struct iwl_trans *trans, struct fw_img *fw);
181 void (*fw_alive)(struct iwl_trans *trans);
182 void (*stop_device)(struct iwl_trans *trans);
184 void (*wake_any_queue)(struct iwl_trans *trans,
185 enum iwl_rxon_context_id ctx,
188 int (*send_cmd)(struct iwl_trans *trans, struct iwl_host_cmd *cmd);
190 int (*tx)(struct iwl_trans *trans, struct sk_buff *skb,
191 struct iwl_device_cmd *dev_cmd, enum iwl_rxon_context_id ctx,
193 int (*reclaim)(struct iwl_trans *trans, int sta_id, int tid,
194 int txq_id, int ssn, u32 status,
195 struct sk_buff_head *skbs);
197 int (*tx_agg_disable)(struct iwl_trans *trans,
198 int sta_id, int tid);
199 int (*tx_agg_alloc)(struct iwl_trans *trans,
200 int sta_id, int tid);
201 void (*tx_agg_setup)(struct iwl_trans *trans,
202 enum iwl_rxon_context_id ctx, int sta_id, int tid,
203 int frame_limit, u16 ssn);
205 void (*free)(struct iwl_trans *trans);
207 void (*stop_queue)(struct iwl_trans *trans, int q, const char *msg);
209 int (*dbgfs_register)(struct iwl_trans *trans, struct dentry* dir);
210 int (*check_stuck_queue)(struct iwl_trans *trans, int q);
211 int (*wait_tx_queue_empty)(struct iwl_trans *trans);
212 #ifdef CONFIG_PM_SLEEP
213 int (*suspend)(struct iwl_trans *trans);
214 int (*resume)(struct iwl_trans *trans);
216 void (*write8)(struct iwl_trans *trans, u32 ofs, u8 val);
217 void (*write32)(struct iwl_trans *trans, u32 ofs, u32 val);
218 u32 (*read32)(struct iwl_trans *trans, u32 ofs);
221 /* Opaque calibration results */
222 struct iwl_calib_result {
223 struct list_head list;
225 struct iwl_calib_hdr hdr;
230 * struct iwl_trans - transport common data
231 * @ops - pointer to iwl_trans_ops
232 * @shrd - pointer to iwl_shared which holds shared data from the upper layer
233 * @hcmd_lock: protects HCMD
234 * @reg_lock - protect hw register access
235 * @dev - pointer to struct device * that represents the device
236 * @irq - the irq number for the device
237 * @ucode_write_complete: indicates that the ucode has been copied.
238 * @ucode_rt: run time ucode image
239 * @ucode_init: init ucode image
240 * @ucode_wowlan: wake on wireless ucode image (optional)
241 * @nvm_device_type: indicates OTP or eeprom
242 * @pm_support: set to true in start_hw if link pm is supported
243 * @calib_results: list head for init calibration results
246 const struct iwl_trans_ops *ops;
247 struct iwl_shared *shrd;
248 spinlock_t hcmd_lock;
254 u8 ucode_write_complete; /* the image write is complete */
255 struct fw_img ucode_rt;
256 struct fw_img ucode_init;
257 struct fw_img ucode_wowlan;
259 /* eeprom related variables */
263 /* init calibration results */
264 struct list_head calib_results;
266 /* pointer to trans specific struct */
267 /*Ensure that this pointer will always be aligned to sizeof pointer */
268 char trans_specific[0] __attribute__((__aligned__(sizeof(void *))));
271 static inline int iwl_trans_start_hw(struct iwl_trans *trans)
273 return trans->ops->start_hw(trans);
276 static inline void iwl_trans_stop_hw(struct iwl_trans *trans)
278 trans->ops->stop_hw(trans);
281 static inline void iwl_trans_fw_alive(struct iwl_trans *trans)
283 trans->ops->fw_alive(trans);
286 static inline int iwl_trans_start_fw(struct iwl_trans *trans, struct fw_img *fw)
290 return trans->ops->start_fw(trans, fw);
293 static inline void iwl_trans_stop_device(struct iwl_trans *trans)
295 trans->ops->stop_device(trans);
298 static inline void iwl_trans_wake_any_queue(struct iwl_trans *trans,
299 enum iwl_rxon_context_id ctx,
302 trans->ops->wake_any_queue(trans, ctx, msg);
306 static inline int iwl_trans_send_cmd(struct iwl_trans *trans,
307 struct iwl_host_cmd *cmd)
309 return trans->ops->send_cmd(trans, cmd);
312 int iwl_trans_send_cmd_pdu(struct iwl_trans *trans, u8 id,
313 u32 flags, u16 len, const void *data);
315 static inline int iwl_trans_tx(struct iwl_trans *trans, struct sk_buff *skb,
316 struct iwl_device_cmd *dev_cmd, enum iwl_rxon_context_id ctx,
319 return trans->ops->tx(trans, skb, dev_cmd, ctx, sta_id, tid);
322 static inline int iwl_trans_reclaim(struct iwl_trans *trans, int sta_id,
323 int tid, int txq_id, int ssn, u32 status,
324 struct sk_buff_head *skbs)
326 return trans->ops->reclaim(trans, sta_id, tid, txq_id, ssn,
330 static inline int iwl_trans_tx_agg_disable(struct iwl_trans *trans,
333 return trans->ops->tx_agg_disable(trans, sta_id, tid);
336 static inline int iwl_trans_tx_agg_alloc(struct iwl_trans *trans,
339 return trans->ops->tx_agg_alloc(trans, sta_id, tid);
343 static inline void iwl_trans_tx_agg_setup(struct iwl_trans *trans,
344 enum iwl_rxon_context_id ctx,
346 int frame_limit, u16 ssn)
348 trans->ops->tx_agg_setup(trans, ctx, sta_id, tid, frame_limit, ssn);
351 static inline void iwl_trans_free(struct iwl_trans *trans)
353 trans->ops->free(trans);
356 static inline void iwl_trans_stop_queue(struct iwl_trans *trans, int q,
359 trans->ops->stop_queue(trans, q, msg);
362 static inline int iwl_trans_wait_tx_queue_empty(struct iwl_trans *trans)
364 return trans->ops->wait_tx_queue_empty(trans);
367 static inline int iwl_trans_check_stuck_queue(struct iwl_trans *trans, int q)
369 return trans->ops->check_stuck_queue(trans, q);
371 static inline int iwl_trans_dbgfs_register(struct iwl_trans *trans,
374 return trans->ops->dbgfs_register(trans, dir);
377 #ifdef CONFIG_PM_SLEEP
378 static inline int iwl_trans_suspend(struct iwl_trans *trans)
380 return trans->ops->suspend(trans);
383 static inline int iwl_trans_resume(struct iwl_trans *trans)
385 return trans->ops->resume(trans);
389 static inline void iwl_trans_write8(struct iwl_trans *trans, u32 ofs, u8 val)
391 trans->ops->write8(trans, ofs, val);
394 static inline void iwl_trans_write32(struct iwl_trans *trans, u32 ofs, u32 val)
396 trans->ops->write32(trans, ofs, val);
399 static inline u32 iwl_trans_read32(struct iwl_trans *trans, u32 ofs)
401 return trans->ops->read32(trans, ofs);
404 /*****************************************************
406 ******************************************************/
407 int iwl_alloc_fw_desc(struct iwl_trans *trans, struct fw_desc *desc,
408 const void *data, size_t len);
409 void iwl_dealloc_ucode(struct iwl_trans *trans);
411 int iwl_send_calib_results(struct iwl_trans *trans);
412 int iwl_calib_set(struct iwl_trans *trans,
413 const struct iwl_calib_hdr *cmd, int len);
414 void iwl_calib_free_results(struct iwl_trans *trans);
416 /*****************************************************
417 * Transport layers implementations + their allocation function
418 ******************************************************/
420 struct pci_device_id;
421 extern const struct iwl_trans_ops trans_ops_pcie;
422 struct iwl_trans *iwl_trans_pcie_alloc(struct iwl_shared *shrd,
423 struct pci_dev *pdev,
424 const struct pci_device_id *ent);
426 extern const struct iwl_trans_ops trans_ops_idi;
427 struct iwl_trans *iwl_trans_idi_alloc(struct iwl_shared *shrd,
429 const void *ent_void);
430 #endif /* __iwl_trans_h__ */