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
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 - 2011 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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60 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
62 *****************************************************************************/
63 #ifndef __iwl_shared_h__
64 #define __iwl_shared_h__
66 #include <linux/types.h>
67 #include <linux/spinlock.h>
68 #include <linux/mutex.h>
69 #include <linux/gfp.h>
70 #include <linux/mm.h> /* for page_address */
71 #include <net/mac80211.h>
73 #include "iwl-commands.h"
76 * DOC: shared area - role and goal
78 * The shared area contains all the data exported by the upper layer to the
79 * other layers. Since the bus and transport layer shouldn't dereference
80 * iwl_priv, all the data needed by the upper layer and the transport / bus
82 * The shared area also holds pointer to all the other layers. This allows a
83 * layer to call a function from another layer.
85 * NOTE: All the layers hold a pointer to the shared area which must be shrd.
86 * A few macros assume that (_m)->shrd points to the shared area no matter
89 * gets notifications about enumeration, suspend, resume.
90 * For the moment, the bus layer is not a linux kernel module as itself, and
91 * the module_init function of the driver must call the bus specific
92 * registration functions. These functions are listed at the end of this file.
93 * For the moment, there is only one implementation of this interface: PCI-e.
94 * This implementation is iwl-pci.c
100 struct iwl_sensitivity_ranges
;
101 struct iwl_trans_ops
;
103 #define DRV_NAME "iwlwifi"
104 #define IWLWIFI_VERSION "in-tree:"
105 #define DRV_COPYRIGHT "Copyright(c) 2003-2011 Intel Corporation"
106 #define DRV_AUTHOR "<ilw@linux.intel.com>"
108 extern struct iwl_mod_params iwlagn_mod_params
;
111 * struct iwl_mod_params
113 * Holds the module parameters
115 * @sw_crypto: using hardware encryption, default = 0
116 * @num_of_queues: number of tx queue, HW dependent
117 * @disable_11n: 11n capabilities enabled, default = 0
118 * @amsdu_size_8K: enable 8K amsdu size, default = 1
119 * @antenna: both antennas (use diversity), default = 0
120 * @restart_fw: restart firmware, default = 1
121 * @plcp_check: enable plcp health check, default = true
122 * @ack_check: disable ack health check, default = false
123 * @wd_disable: enable stuck queue check, default = false
124 * @bt_coex_active: enable bt coex, default = true
125 * @led_mode: system default, default = 0
126 * @no_sleep_autoadjust: disable autoadjust, default = true
127 * @power_save: disable power save, default = false
128 * @power_level: power level, default = 1
129 * @debug_level: levels are IWL_DL_*
130 * @ant_coupling: antenna coupling in dB, default = 0
131 * @bt_ch_announce: BT channel inhibition, default = enable
132 * @wanted_ucode_alternative: ucode alternative to use, default = 1
133 * @auto_agg: enable agg. without check, default = true
135 struct iwl_mod_params
{
147 bool no_sleep_autoadjust
;
153 int wanted_ucode_alternative
;
158 * struct iwl_hw_params
160 * Holds the module parameters
162 * @max_txq_num: Max # Tx queues supported
163 * @num_ampdu_queues: num of ampdu queues
164 * @tx_chains_num: Number of TX chains
165 * @rx_chains_num: Number of RX chains
166 * @valid_tx_ant: usable antennas for TX
167 * @valid_rx_ant: usable antennas for RX
168 * @ht40_channel: is 40MHz width possible: BIT(IEEE80211_BAND_XXX)
169 * @sku: sku read from EEPROM
170 * @rx_page_order: Rx buffer page order
171 * @max_inst_size: for ucode use
172 * @max_data_size: for ucode use
173 * @ct_kill_threshold: temperature threshold - in hw dependent unit
174 * @ct_kill_exit_threshold: when to reeable the device - in hw dependent unit
175 * relevant for 1000, 6000 and up
176 * @wd_timeout: TX queues watchdog timeout
177 * @calib_rt_cfg: setup runtime calibrations for the hw
178 * @struct iwl_sensitivity_ranges: range of sensitivity values
180 struct iwl_hw_params
{
188 bool shadow_reg_enable
;
193 u32 ct_kill_threshold
;
194 u32 ct_kill_exit_threshold
;
195 unsigned int wd_timeout
;
198 const struct iwl_sensitivity_ranges
*sens
;
204 * The state machine of the BA agreement establishment / tear down.
205 * These states relate to a specific RA / TID.
207 * @IWL_AGG_OFF: aggregation is not used
208 * @IWL_AGG_ON: aggregation session is up
209 * @IWL_EMPTYING_HW_QUEUE_ADDBA: establishing a BA session - waiting for the
210 * HW queue to be empty from packets for this RA /TID.
211 * @IWL_EMPTYING_HW_QUEUE_DELBA: tearing down a BA session - waiting for the
212 * HW queue to be empty from packets for this RA /TID.
217 IWL_EMPTYING_HW_QUEUE_ADDBA
,
218 IWL_EMPTYING_HW_QUEUE_DELBA
,
222 * struct iwl_ht_agg - aggregation state machine
224 * This structs holds the states for the BA agreement establishment and tear
225 * down. It also holds the state during the BA session itself. This struct is
226 * duplicated for each RA / TID.
228 * @rate_n_flags: Rate at which Tx was attempted. Holds the data between the
229 * Tx response (REPLY_TX), and the block ack notification
230 * (REPLY_COMPRESSED_BA).
231 * @state: state of the BA agreement establishment / tear down.
232 * @txq_id: Tx queue used by the BA session - used by the transport layer.
233 * Needed by the upper layer for debugfs only.
234 * @wait_for_ba: Expect block-ack before next Tx reply
238 enum iwl_agg_state state
;
244 * struct iwl_tid_data - one for each RA / TID
246 * This structs holds the states for each RA / TID.
248 * @seq_number: the next WiFi sequence number to use
249 * @tfds_in_queue: number of packets sent to the HW queues.
250 * Exported for debugfs only
251 * @agg: aggregation state machine
253 struct iwl_tid_data
{
256 struct iwl_ht_agg agg
;
260 * struct iwl_shared - shared fields for all the layers of the driver
262 * @dbg_level_dev: dbg level set per device. Prevails on
263 * iwlagn_mod_params.debug_level if set (!= 0)
264 * @ucode_owner: IWL_OWNERSHIP_*
265 * @cmd_queue: command queue number
267 * @valid_contexts: microcode/device supports multiple contexts
268 * @bus: pointer to the bus layer data
269 * @priv: pointer to the upper layer data
270 * @hw_params: see struct iwl_hw_params
271 * @workqueue: the workqueue used by all the layers of the driver
272 * @lock: protect general shared data
273 * @sta_lock: protects the station table.
274 * If lock and sta_lock are needed, lock must be acquired first.
278 #ifdef CONFIG_IWLWIFI_DEBUG
280 #endif /* CONFIG_IWLWIFI_DEBUG */
282 #define IWL_OWNERSHIP_DRIVER 0
283 #define IWL_OWNERSHIP_TM 1
286 unsigned long status
;
291 struct iwl_priv
*priv
;
292 struct iwl_trans
*trans
;
293 struct iwl_hw_params hw_params
;
295 struct workqueue_struct
*workqueue
;
300 struct iwl_tid_data tid_data
[IWLAGN_STATION_COUNT
][IWL_MAX_TID_COUNT
];
302 wait_queue_head_t wait_command_queue
;
305 /*Whatever _m is (iwl_trans, iwl_priv, iwl_bus, these macros will work */
306 #define priv(_m) ((_m)->shrd->priv)
307 #define bus(_m) ((_m)->shrd->bus)
308 #define trans(_m) ((_m)->shrd->trans)
309 #define hw_params(_m) ((_m)->shrd->hw_params)
311 #ifdef CONFIG_IWLWIFI_DEBUG
313 * iwl_get_debug_level: Return active debug level for device
315 * Using sysfs it is possible to set per device debug level. This debug
316 * level will be used if set, otherwise the global debug level which can be
317 * set via module parameter is used.
319 static inline u32
iwl_get_debug_level(struct iwl_shared
*shrd
)
321 if (shrd
->dbg_level_dev
)
322 return shrd
->dbg_level_dev
;
324 return iwlagn_mod_params
.debug_level
;
327 static inline u32
iwl_get_debug_level(struct iwl_shared
*shrd
)
329 return iwlagn_mod_params
.debug_level
;
333 static inline void iwl_free_pages(struct iwl_shared
*shrd
, unsigned long page
)
335 free_pages(page
, shrd
->hw_params
.rx_page_order
);
339 * iwl_queue_inc_wrap - increment queue index, wrap back to beginning
340 * @index -- current index
341 * @n_bd -- total number of entries in queue (must be power of 2)
343 static inline int iwl_queue_inc_wrap(int index
, int n_bd
)
345 return ++index
& (n_bd
- 1);
349 * iwl_queue_dec_wrap - decrement queue index, wrap back to end
350 * @index -- current index
351 * @n_bd -- total number of entries in queue (must be power of 2)
353 static inline int iwl_queue_dec_wrap(int index
, int n_bd
)
355 return --index
& (n_bd
- 1);
358 struct iwl_rx_mem_buffer
{
361 struct list_head list
;
364 #define rxb_addr(r) page_address(r->page)
367 * mac80211 queues, ACs, hardware queues, FIFOs.
369 * Cf. http://wireless.kernel.org/en/developers/Documentation/mac80211/queues
371 * Mac80211 uses the following numbers, which we get as from it
372 * by way of skb_get_queue_mapping(skb):
380 * Regular (not A-MPDU) frames are put into hardware queues corresponding
381 * to the FIFOs, see comments in iwl-prph.h. Aggregated frames get their
382 * own queue per aggregation session (RA/TID combination), such queues are
383 * set up to map into FIFOs too, for which we need an AC->FIFO mapping. In
384 * order to map frames to the right queue, we also need an AC->hw queue
385 * mapping. This is implemented here.
387 * Due to the way hw queues are set up (by the hw specific modules like
388 * iwl-4965.c, iwl-5000.c etc.), the AC->hw queue mapping is the identity
392 static const u8 tid_to_ac
[] = {
403 static inline int get_ac_from_tid(u16 tid
)
405 if (likely(tid
< ARRAY_SIZE(tid_to_ac
)))
406 return tid_to_ac
[tid
];
408 /* no support for TIDs 8-15 yet */
412 enum iwl_rxon_context_id
{
419 int iwl_probe(struct iwl_bus
*bus
, const struct iwl_trans_ops
*trans_ops
,
420 struct iwl_cfg
*cfg
);
421 void __devexit
iwl_remove(struct iwl_priv
* priv
);
422 struct iwl_device_cmd
;
423 int __must_check
iwl_rx_dispatch(struct iwl_priv
*priv
,
424 struct iwl_rx_mem_buffer
*rxb
,
425 struct iwl_device_cmd
*cmd
);
427 int iwlagn_hw_valid_rtc_data_addr(u32 addr
);
428 void iwl_start_tx_ba_trans_ready(struct iwl_priv
*priv
,
429 enum iwl_rxon_context_id ctx
,
431 void iwl_stop_tx_ba_trans_ready(struct iwl_priv
*priv
,
432 enum iwl_rxon_context_id ctx
,
434 void iwl_set_hw_rfkill_state(struct iwl_priv
*priv
, bool state
);
435 void iwl_nic_config(struct iwl_priv
*priv
);
436 void iwl_free_skb(struct iwl_priv
*priv
, struct sk_buff
*skb
);
437 void iwl_apm_stop(struct iwl_priv
*priv
);
438 int iwl_apm_init(struct iwl_priv
*priv
);
439 void iwlagn_fw_error(struct iwl_priv
*priv
, bool ondemand
);
440 const char *get_cmd_string(u8 cmd
);
441 bool iwl_check_for_ct_kill(struct iwl_priv
*priv
);
443 void iwl_stop_sw_queue(struct iwl_priv
*priv
, u8 ac
);
444 void iwl_wake_sw_queue(struct iwl_priv
*priv
, u8 ac
);
446 #ifdef CONFIG_IWLWIFI_DEBUGFS
447 void iwl_reset_traffic_log(struct iwl_priv
*priv
);
448 #endif /* CONFIG_IWLWIFI_DEBUGFS */
450 #ifdef CONFIG_IWLWIFI_DEBUG
451 void iwl_print_rx_config_cmd(struct iwl_priv
*priv
,
452 enum iwl_rxon_context_id ctxid
);
454 static inline void iwl_print_rx_config_cmd(struct iwl_priv
*priv
,
455 enum iwl_rxon_context_id ctxid
)
460 #define IWL_CMD(x) case x: return #x
461 #define IWL_MASK(lo, hi) ((1 << (hi)) | ((1 << (hi)) - (1 << (lo))))
463 #define IWL_TRAFFIC_ENTRIES (256)
464 #define IWL_TRAFFIC_ENTRY_SIZE (64)
466 /*****************************************************
467 * DRIVER STATUS FUNCTIONS
468 ******************************************************/
469 #define STATUS_HCMD_ACTIVE 0 /* host command in progress */
470 /* 1 is unused (used to be STATUS_HCMD_SYNC_ACTIVE) */
471 #define STATUS_INT_ENABLED 2
472 #define STATUS_RF_KILL_HW 3
473 #define STATUS_CT_KILL 4
474 #define STATUS_INIT 5
475 #define STATUS_ALIVE 6
476 #define STATUS_READY 7
477 #define STATUS_TEMPERATURE 8
478 #define STATUS_GEO_CONFIGURED 9
479 #define STATUS_EXIT_PENDING 10
480 #define STATUS_STATISTICS 12
481 #define STATUS_SCANNING 13
482 #define STATUS_SCAN_ABORTING 14
483 #define STATUS_SCAN_HW 15
484 #define STATUS_POWER_PMI 16
485 #define STATUS_FW_ERROR 17
486 #define STATUS_DEVICE_ENABLED 18
487 #define STATUS_CHANNEL_SWITCH_PENDING 19
488 #define STATUS_SCAN_COMPLETE 20
490 static inline int iwl_is_ready(struct iwl_shared
*shrd
)
492 /* The adapter is 'ready' if READY and GEO_CONFIGURED bits are
493 * set but EXIT_PENDING is not */
494 return test_bit(STATUS_READY
, &shrd
->status
) &&
495 test_bit(STATUS_GEO_CONFIGURED
, &shrd
->status
) &&
496 !test_bit(STATUS_EXIT_PENDING
, &shrd
->status
);
499 static inline int iwl_is_alive(struct iwl_shared
*shrd
)
501 return test_bit(STATUS_ALIVE
, &shrd
->status
);
504 static inline int iwl_is_init(struct iwl_shared
*shrd
)
506 return test_bit(STATUS_INIT
, &shrd
->status
);
509 static inline int iwl_is_rfkill_hw(struct iwl_shared
*shrd
)
511 return test_bit(STATUS_RF_KILL_HW
, &shrd
->status
);
514 static inline int iwl_is_rfkill(struct iwl_shared
*shrd
)
516 return iwl_is_rfkill_hw(shrd
);
519 static inline int iwl_is_ctkill(struct iwl_shared
*shrd
)
521 return test_bit(STATUS_CT_KILL
, &shrd
->status
);
524 static inline int iwl_is_ready_rf(struct iwl_shared
*shrd
)
526 if (iwl_is_rfkill(shrd
))
529 return iwl_is_ready(shrd
);
532 #endif /* #__iwl_shared_h__ */