1 /******************************************************************************
3 * Copyright(c) 2003 - 2010 Intel Corporation. All rights reserved.
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of version 2 of the GNU General Public License as
7 * published by the Free Software Foundation.
9 * This program is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
14 * You should have received a copy of the GNU General Public License along with
15 * this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
18 * The full GNU General Public License is included in this distribution in the
19 * file called LICENSE.
21 * Contact Information:
22 * Intel Linux Wireless <ilw@linux.intel.com>
23 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
25 *****************************************************************************/
27 #include <linux/kernel.h>
28 #include <linux/module.h>
29 #include <linux/init.h>
30 #include <linux/pci.h>
31 #include <linux/dma-mapping.h>
32 #include <linux/delay.h>
33 #include <linux/sched.h>
34 #include <linux/skbuff.h>
35 #include <linux/netdevice.h>
36 #include <linux/wireless.h>
37 #include <net/mac80211.h>
38 #include <linux/etherdevice.h>
39 #include <asm/unaligned.h>
41 #include "iwl-eeprom.h"
45 #include "iwl-helpers.h"
46 #include "iwl-calib.h"
48 #include "iwl-agn-led.h"
50 #include "iwl-agn-debugfs.h"
52 static int iwl4965_send_tx_power(struct iwl_priv
*priv
);
53 static int iwl4965_hw_get_temperature(struct iwl_priv
*priv
);
55 /* Highest firmware API version supported */
56 #define IWL4965_UCODE_API_MAX 2
58 /* Lowest firmware API version supported */
59 #define IWL4965_UCODE_API_MIN 2
61 #define IWL4965_FW_PRE "iwlwifi-4965-"
62 #define _IWL4965_MODULE_FIRMWARE(api) IWL4965_FW_PRE #api ".ucode"
63 #define IWL4965_MODULE_FIRMWARE(api) _IWL4965_MODULE_FIRMWARE(api)
65 /* check contents of special bootstrap uCode SRAM */
66 static int iwl4965_verify_bsm(struct iwl_priv
*priv
)
68 __le32
*image
= priv
->ucode_boot
.v_addr
;
69 u32 len
= priv
->ucode_boot
.len
;
73 IWL_DEBUG_INFO(priv
, "Begin verify bsm\n");
75 /* verify BSM SRAM contents */
76 val
= iwl_read_prph(priv
, BSM_WR_DWCOUNT_REG
);
77 for (reg
= BSM_SRAM_LOWER_BOUND
;
78 reg
< BSM_SRAM_LOWER_BOUND
+ len
;
79 reg
+= sizeof(u32
), image
++) {
80 val
= iwl_read_prph(priv
, reg
);
81 if (val
!= le32_to_cpu(*image
)) {
82 IWL_ERR(priv
, "BSM uCode verification failed at "
83 "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
85 reg
- BSM_SRAM_LOWER_BOUND
, len
,
86 val
, le32_to_cpu(*image
));
91 IWL_DEBUG_INFO(priv
, "BSM bootstrap uCode image OK\n");
97 * iwl4965_load_bsm - Load bootstrap instructions
101 * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
102 * in special SRAM that does not power down during RFKILL. When powering back
103 * up after power-saving sleeps (or during initial uCode load), the BSM loads
104 * the bootstrap program into the on-board processor, and starts it.
106 * The bootstrap program loads (via DMA) instructions and data for a new
107 * program from host DRAM locations indicated by the host driver in the
108 * BSM_DRAM_* registers. Once the new program is loaded, it starts
111 * When initializing the NIC, the host driver points the BSM to the
112 * "initialize" uCode image. This uCode sets up some internal data, then
113 * notifies host via "initialize alive" that it is complete.
115 * The host then replaces the BSM_DRAM_* pointer values to point to the
116 * normal runtime uCode instructions and a backup uCode data cache buffer
117 * (filled initially with starting data values for the on-board processor),
118 * then triggers the "initialize" uCode to load and launch the runtime uCode,
119 * which begins normal operation.
121 * When doing a power-save shutdown, runtime uCode saves data SRAM into
122 * the backup data cache in DRAM before SRAM is powered down.
124 * When powering back up, the BSM loads the bootstrap program. This reloads
125 * the runtime uCode instructions and the backup data cache into SRAM,
126 * and re-launches the runtime uCode from where it left off.
128 static int iwl4965_load_bsm(struct iwl_priv
*priv
)
130 __le32
*image
= priv
->ucode_boot
.v_addr
;
131 u32 len
= priv
->ucode_boot
.len
;
141 IWL_DEBUG_INFO(priv
, "Begin load bsm\n");
143 priv
->ucode_type
= UCODE_RT
;
145 /* make sure bootstrap program is no larger than BSM's SRAM size */
146 if (len
> IWL49_MAX_BSM_SIZE
)
149 /* Tell bootstrap uCode where to find the "Initialize" uCode
150 * in host DRAM ... host DRAM physical address bits 35:4 for 4965.
151 * NOTE: iwl_init_alive_start() will replace these values,
152 * after the "initialize" uCode has run, to point to
153 * runtime/protocol instructions and backup data cache.
155 pinst
= priv
->ucode_init
.p_addr
>> 4;
156 pdata
= priv
->ucode_init_data
.p_addr
>> 4;
157 inst_len
= priv
->ucode_init
.len
;
158 data_len
= priv
->ucode_init_data
.len
;
160 iwl_write_prph(priv
, BSM_DRAM_INST_PTR_REG
, pinst
);
161 iwl_write_prph(priv
, BSM_DRAM_DATA_PTR_REG
, pdata
);
162 iwl_write_prph(priv
, BSM_DRAM_INST_BYTECOUNT_REG
, inst_len
);
163 iwl_write_prph(priv
, BSM_DRAM_DATA_BYTECOUNT_REG
, data_len
);
165 /* Fill BSM memory with bootstrap instructions */
166 for (reg_offset
= BSM_SRAM_LOWER_BOUND
;
167 reg_offset
< BSM_SRAM_LOWER_BOUND
+ len
;
168 reg_offset
+= sizeof(u32
), image
++)
169 _iwl_write_prph(priv
, reg_offset
, le32_to_cpu(*image
));
171 ret
= iwl4965_verify_bsm(priv
);
175 /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
176 iwl_write_prph(priv
, BSM_WR_MEM_SRC_REG
, 0x0);
177 iwl_write_prph(priv
, BSM_WR_MEM_DST_REG
, IWL49_RTC_INST_LOWER_BOUND
);
178 iwl_write_prph(priv
, BSM_WR_DWCOUNT_REG
, len
/ sizeof(u32
));
180 /* Load bootstrap code into instruction SRAM now,
181 * to prepare to load "initialize" uCode */
182 iwl_write_prph(priv
, BSM_WR_CTRL_REG
, BSM_WR_CTRL_REG_BIT_START
);
184 /* Wait for load of bootstrap uCode to finish */
185 for (i
= 0; i
< 100; i
++) {
186 done
= iwl_read_prph(priv
, BSM_WR_CTRL_REG
);
187 if (!(done
& BSM_WR_CTRL_REG_BIT_START
))
192 IWL_DEBUG_INFO(priv
, "BSM write complete, poll %d iterations\n", i
);
194 IWL_ERR(priv
, "BSM write did not complete!\n");
198 /* Enable future boot loads whenever power management unit triggers it
199 * (e.g. when powering back up after power-save shutdown) */
200 iwl_write_prph(priv
, BSM_WR_CTRL_REG
, BSM_WR_CTRL_REG_BIT_START_EN
);
207 * iwl4965_set_ucode_ptrs - Set uCode address location
209 * Tell initialization uCode where to find runtime uCode.
211 * BSM registers initially contain pointers to initialization uCode.
212 * We need to replace them to load runtime uCode inst and data,
213 * and to save runtime data when powering down.
215 static int iwl4965_set_ucode_ptrs(struct iwl_priv
*priv
)
221 /* bits 35:4 for 4965 */
222 pinst
= priv
->ucode_code
.p_addr
>> 4;
223 pdata
= priv
->ucode_data_backup
.p_addr
>> 4;
225 /* Tell bootstrap uCode where to find image to load */
226 iwl_write_prph(priv
, BSM_DRAM_INST_PTR_REG
, pinst
);
227 iwl_write_prph(priv
, BSM_DRAM_DATA_PTR_REG
, pdata
);
228 iwl_write_prph(priv
, BSM_DRAM_DATA_BYTECOUNT_REG
,
229 priv
->ucode_data
.len
);
231 /* Inst byte count must be last to set up, bit 31 signals uCode
232 * that all new ptr/size info is in place */
233 iwl_write_prph(priv
, BSM_DRAM_INST_BYTECOUNT_REG
,
234 priv
->ucode_code
.len
| BSM_DRAM_INST_LOAD
);
235 IWL_DEBUG_INFO(priv
, "Runtime uCode pointers are set.\n");
241 * iwl4965_init_alive_start - Called after REPLY_ALIVE notification received
243 * Called after REPLY_ALIVE notification received from "initialize" uCode.
245 * The 4965 "initialize" ALIVE reply contains calibration data for:
246 * Voltage, temperature, and MIMO tx gain correction, now stored in priv
247 * (3945 does not contain this data).
249 * Tell "initialize" uCode to go ahead and load the runtime uCode.
251 static void iwl4965_init_alive_start(struct iwl_priv
*priv
)
253 /* Check alive response for "valid" sign from uCode */
254 if (priv
->card_alive_init
.is_valid
!= UCODE_VALID_OK
) {
255 /* We had an error bringing up the hardware, so take it
256 * all the way back down so we can try again */
257 IWL_DEBUG_INFO(priv
, "Initialize Alive failed.\n");
261 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
262 * This is a paranoid check, because we would not have gotten the
263 * "initialize" alive if code weren't properly loaded. */
264 if (iwl_verify_ucode(priv
)) {
265 /* Runtime instruction load was bad;
266 * take it all the way back down so we can try again */
267 IWL_DEBUG_INFO(priv
, "Bad \"initialize\" uCode load.\n");
271 /* Calculate temperature */
272 priv
->temperature
= iwl4965_hw_get_temperature(priv
);
274 /* Send pointers to protocol/runtime uCode image ... init code will
275 * load and launch runtime uCode, which will send us another "Alive"
277 IWL_DEBUG_INFO(priv
, "Initialization Alive received.\n");
278 if (iwl4965_set_ucode_ptrs(priv
)) {
279 /* Runtime instruction load won't happen;
280 * take it all the way back down so we can try again */
281 IWL_DEBUG_INFO(priv
, "Couldn't set up uCode pointers.\n");
287 queue_work(priv
->workqueue
, &priv
->restart
);
290 static bool is_ht40_channel(__le32 rxon_flags
)
292 int chan_mod
= le32_to_cpu(rxon_flags
& RXON_FLG_CHANNEL_MODE_MSK
)
293 >> RXON_FLG_CHANNEL_MODE_POS
;
294 return ((chan_mod
== CHANNEL_MODE_PURE_40
) ||
295 (chan_mod
== CHANNEL_MODE_MIXED
));
301 static u16
iwl4965_eeprom_calib_version(struct iwl_priv
*priv
)
303 return iwl_eeprom_query16(priv
, EEPROM_4965_CALIB_VERSION_OFFSET
);
307 * Activate/Deactivate Tx DMA/FIFO channels according tx fifos mask
308 * must be called under priv->lock and mac access
310 static void iwl4965_txq_set_sched(struct iwl_priv
*priv
, u32 mask
)
312 iwl_write_prph(priv
, IWL49_SCD_TXFACT
, mask
);
315 static void iwl4965_nic_config(struct iwl_priv
*priv
)
320 spin_lock_irqsave(&priv
->lock
, flags
);
322 radio_cfg
= iwl_eeprom_query16(priv
, EEPROM_RADIO_CONFIG
);
324 /* write radio config values to register */
325 if (EEPROM_RF_CFG_TYPE_MSK(radio_cfg
) == EEPROM_4965_RF_CFG_TYPE_MAX
)
326 iwl_set_bit(priv
, CSR_HW_IF_CONFIG_REG
,
327 EEPROM_RF_CFG_TYPE_MSK(radio_cfg
) |
328 EEPROM_RF_CFG_STEP_MSK(radio_cfg
) |
329 EEPROM_RF_CFG_DASH_MSK(radio_cfg
));
331 /* set CSR_HW_CONFIG_REG for uCode use */
332 iwl_set_bit(priv
, CSR_HW_IF_CONFIG_REG
,
333 CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI
|
334 CSR_HW_IF_CONFIG_REG_BIT_MAC_SI
);
336 priv
->calib_info
= (struct iwl_eeprom_calib_info
*)
337 iwl_eeprom_query_addr(priv
, EEPROM_4965_CALIB_TXPOWER_OFFSET
);
339 spin_unlock_irqrestore(&priv
->lock
, flags
);
342 /* Reset differential Rx gains in NIC to prepare for chain noise calibration.
343 * Called after every association, but this runs only once!
344 * ... once chain noise is calibrated the first time, it's good forever. */
345 static void iwl4965_chain_noise_reset(struct iwl_priv
*priv
)
347 struct iwl_chain_noise_data
*data
= &(priv
->chain_noise_data
);
349 if ((data
->state
== IWL_CHAIN_NOISE_ALIVE
) &&
350 iwl_is_associated(priv
)) {
351 struct iwl_calib_diff_gain_cmd cmd
;
353 /* clear data for chain noise calibration algorithm */
354 data
->chain_noise_a
= 0;
355 data
->chain_noise_b
= 0;
356 data
->chain_noise_c
= 0;
357 data
->chain_signal_a
= 0;
358 data
->chain_signal_b
= 0;
359 data
->chain_signal_c
= 0;
360 data
->beacon_count
= 0;
362 memset(&cmd
, 0, sizeof(cmd
));
363 cmd
.hdr
.op_code
= IWL_PHY_CALIBRATE_DIFF_GAIN_CMD
;
367 if (iwl_send_cmd_pdu(priv
, REPLY_PHY_CALIBRATION_CMD
,
370 "Could not send REPLY_PHY_CALIBRATION_CMD\n");
371 data
->state
= IWL_CHAIN_NOISE_ACCUMULATE
;
372 IWL_DEBUG_CALIB(priv
, "Run chain_noise_calibrate\n");
376 static void iwl4965_gain_computation(struct iwl_priv
*priv
,
378 u16 min_average_noise_antenna_i
,
379 u32 min_average_noise
,
383 struct iwl_chain_noise_data
*data
= &priv
->chain_noise_data
;
385 data
->delta_gain_code
[min_average_noise_antenna_i
] = 0;
387 for (i
= default_chain
; i
< NUM_RX_CHAINS
; i
++) {
390 if (!(data
->disconn_array
[i
]) &&
391 (data
->delta_gain_code
[i
] ==
392 CHAIN_NOISE_DELTA_GAIN_INIT_VAL
)) {
393 delta_g
= average_noise
[i
] - min_average_noise
;
394 data
->delta_gain_code
[i
] = (u8
)((delta_g
* 10) / 15);
395 data
->delta_gain_code
[i
] =
396 min(data
->delta_gain_code
[i
],
397 (u8
) CHAIN_NOISE_MAX_DELTA_GAIN_CODE
);
399 data
->delta_gain_code
[i
] =
400 (data
->delta_gain_code
[i
] | (1 << 2));
402 data
->delta_gain_code
[i
] = 0;
405 IWL_DEBUG_CALIB(priv
, "delta_gain_codes: a %d b %d c %d\n",
406 data
->delta_gain_code
[0],
407 data
->delta_gain_code
[1],
408 data
->delta_gain_code
[2]);
410 /* Differential gain gets sent to uCode only once */
411 if (!data
->radio_write
) {
412 struct iwl_calib_diff_gain_cmd cmd
;
413 data
->radio_write
= 1;
415 memset(&cmd
, 0, sizeof(cmd
));
416 cmd
.hdr
.op_code
= IWL_PHY_CALIBRATE_DIFF_GAIN_CMD
;
417 cmd
.diff_gain_a
= data
->delta_gain_code
[0];
418 cmd
.diff_gain_b
= data
->delta_gain_code
[1];
419 cmd
.diff_gain_c
= data
->delta_gain_code
[2];
420 ret
= iwl_send_cmd_pdu(priv
, REPLY_PHY_CALIBRATION_CMD
,
423 IWL_DEBUG_CALIB(priv
, "fail sending cmd "
424 "REPLY_PHY_CALIBRATION_CMD\n");
426 /* TODO we might want recalculate
427 * rx_chain in rxon cmd */
429 /* Mark so we run this algo only once! */
430 data
->state
= IWL_CHAIN_NOISE_CALIBRATED
;
434 static void iwl4965_bg_txpower_work(struct work_struct
*work
)
436 struct iwl_priv
*priv
= container_of(work
, struct iwl_priv
,
439 /* If a scan happened to start before we got here
440 * then just return; the statistics notification will
441 * kick off another scheduled work to compensate for
442 * any temperature delta we missed here. */
443 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
) ||
444 test_bit(STATUS_SCANNING
, &priv
->status
))
447 mutex_lock(&priv
->mutex
);
449 /* Regardless of if we are associated, we must reconfigure the
450 * TX power since frames can be sent on non-radar channels while
452 iwl4965_send_tx_power(priv
);
454 /* Update last_temperature to keep is_calib_needed from running
455 * when it isn't needed... */
456 priv
->last_temperature
= priv
->temperature
;
458 mutex_unlock(&priv
->mutex
);
462 * Acquire priv->lock before calling this function !
464 static void iwl4965_set_wr_ptrs(struct iwl_priv
*priv
, int txq_id
, u32 index
)
466 iwl_write_direct32(priv
, HBUS_TARG_WRPTR
,
467 (index
& 0xff) | (txq_id
<< 8));
468 iwl_write_prph(priv
, IWL49_SCD_QUEUE_RDPTR(txq_id
), index
);
472 * iwl4965_tx_queue_set_status - (optionally) start Tx/Cmd queue
473 * @tx_fifo_id: Tx DMA/FIFO channel (range 0-7) that the queue will feed
474 * @scd_retry: (1) Indicates queue will be used in aggregation mode
476 * NOTE: Acquire priv->lock before calling this function !
478 static void iwl4965_tx_queue_set_status(struct iwl_priv
*priv
,
479 struct iwl_tx_queue
*txq
,
480 int tx_fifo_id
, int scd_retry
)
482 int txq_id
= txq
->q
.id
;
484 /* Find out whether to activate Tx queue */
485 int active
= test_bit(txq_id
, &priv
->txq_ctx_active_msk
) ? 1 : 0;
487 /* Set up and activate */
488 iwl_write_prph(priv
, IWL49_SCD_QUEUE_STATUS_BITS(txq_id
),
489 (active
<< IWL49_SCD_QUEUE_STTS_REG_POS_ACTIVE
) |
490 (tx_fifo_id
<< IWL49_SCD_QUEUE_STTS_REG_POS_TXF
) |
491 (scd_retry
<< IWL49_SCD_QUEUE_STTS_REG_POS_WSL
) |
492 (scd_retry
<< IWL49_SCD_QUEUE_STTS_REG_POS_SCD_ACK
) |
493 IWL49_SCD_QUEUE_STTS_REG_MSK
);
495 txq
->sched_retry
= scd_retry
;
497 IWL_DEBUG_INFO(priv
, "%s %s Queue %d on AC %d\n",
498 active
? "Activate" : "Deactivate",
499 scd_retry
? "BA" : "AC", txq_id
, tx_fifo_id
);
502 static const s8 default_queue_to_tx_fifo
[] = {
512 static int iwl4965_alive_notify(struct iwl_priv
*priv
)
519 spin_lock_irqsave(&priv
->lock
, flags
);
521 /* Clear 4965's internal Tx Scheduler data base */
522 priv
->scd_base_addr
= iwl_read_prph(priv
, IWL49_SCD_SRAM_BASE_ADDR
);
523 a
= priv
->scd_base_addr
+ IWL49_SCD_CONTEXT_DATA_OFFSET
;
524 for (; a
< priv
->scd_base_addr
+ IWL49_SCD_TX_STTS_BITMAP_OFFSET
; a
+= 4)
525 iwl_write_targ_mem(priv
, a
, 0);
526 for (; a
< priv
->scd_base_addr
+ IWL49_SCD_TRANSLATE_TBL_OFFSET
; a
+= 4)
527 iwl_write_targ_mem(priv
, a
, 0);
528 for (; a
< priv
->scd_base_addr
+
529 IWL49_SCD_TRANSLATE_TBL_OFFSET_QUEUE(priv
->hw_params
.max_txq_num
); a
+= 4)
530 iwl_write_targ_mem(priv
, a
, 0);
532 /* Tel 4965 where to find Tx byte count tables */
533 iwl_write_prph(priv
, IWL49_SCD_DRAM_BASE_ADDR
,
534 priv
->scd_bc_tbls
.dma
>> 10);
536 /* Enable DMA channel */
537 for (chan
= 0; chan
< FH49_TCSR_CHNL_NUM
; chan
++)
538 iwl_write_direct32(priv
, FH_TCSR_CHNL_TX_CONFIG_REG(chan
),
539 FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE
|
540 FH_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_ENABLE
);
542 /* Update FH chicken bits */
543 reg_val
= iwl_read_direct32(priv
, FH_TX_CHICKEN_BITS_REG
);
544 iwl_write_direct32(priv
, FH_TX_CHICKEN_BITS_REG
,
545 reg_val
| FH_TX_CHICKEN_BITS_SCD_AUTO_RETRY_EN
);
547 /* Disable chain mode for all queues */
548 iwl_write_prph(priv
, IWL49_SCD_QUEUECHAIN_SEL
, 0);
550 /* Initialize each Tx queue (including the command queue) */
551 for (i
= 0; i
< priv
->hw_params
.max_txq_num
; i
++) {
553 /* TFD circular buffer read/write indexes */
554 iwl_write_prph(priv
, IWL49_SCD_QUEUE_RDPTR(i
), 0);
555 iwl_write_direct32(priv
, HBUS_TARG_WRPTR
, 0 | (i
<< 8));
557 /* Max Tx Window size for Scheduler-ACK mode */
558 iwl_write_targ_mem(priv
, priv
->scd_base_addr
+
559 IWL49_SCD_CONTEXT_QUEUE_OFFSET(i
),
561 IWL49_SCD_QUEUE_CTX_REG1_WIN_SIZE_POS
) &
562 IWL49_SCD_QUEUE_CTX_REG1_WIN_SIZE_MSK
);
565 iwl_write_targ_mem(priv
, priv
->scd_base_addr
+
566 IWL49_SCD_CONTEXT_QUEUE_OFFSET(i
) +
569 IWL49_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_POS
) &
570 IWL49_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_MSK
);
573 iwl_write_prph(priv
, IWL49_SCD_INTERRUPT_MASK
,
574 (1 << priv
->hw_params
.max_txq_num
) - 1);
576 /* Activate all Tx DMA/FIFO channels */
577 priv
->cfg
->ops
->lib
->txq_set_sched(priv
, IWL_MASK(0, 6));
579 iwl4965_set_wr_ptrs(priv
, IWL_CMD_QUEUE_NUM
, 0);
581 /* make sure all queue are not stopped */
582 memset(&priv
->queue_stopped
[0], 0, sizeof(priv
->queue_stopped
));
583 for (i
= 0; i
< 4; i
++)
584 atomic_set(&priv
->queue_stop_count
[i
], 0);
586 /* reset to 0 to enable all the queue first */
587 priv
->txq_ctx_active_msk
= 0;
588 /* Map each Tx/cmd queue to its corresponding fifo */
589 BUILD_BUG_ON(ARRAY_SIZE(default_queue_to_tx_fifo
) != 7);
590 for (i
= 0; i
< ARRAY_SIZE(default_queue_to_tx_fifo
); i
++) {
591 int ac
= default_queue_to_tx_fifo
[i
];
593 iwl_txq_ctx_activate(priv
, i
);
595 if (ac
== IWL_TX_FIFO_UNUSED
)
598 iwl4965_tx_queue_set_status(priv
, &priv
->txq
[i
], ac
, 0);
601 spin_unlock_irqrestore(&priv
->lock
, flags
);
606 static struct iwl_sensitivity_ranges iwl4965_sensitivity
= {
608 .max_nrg_cck
= 0, /* not used, set to 0 */
610 .auto_corr_min_ofdm
= 85,
611 .auto_corr_min_ofdm_mrc
= 170,
612 .auto_corr_min_ofdm_x1
= 105,
613 .auto_corr_min_ofdm_mrc_x1
= 220,
615 .auto_corr_max_ofdm
= 120,
616 .auto_corr_max_ofdm_mrc
= 210,
617 .auto_corr_max_ofdm_x1
= 140,
618 .auto_corr_max_ofdm_mrc_x1
= 270,
620 .auto_corr_min_cck
= 125,
621 .auto_corr_max_cck
= 200,
622 .auto_corr_min_cck_mrc
= 200,
623 .auto_corr_max_cck_mrc
= 400,
628 .barker_corr_th_min
= 190,
629 .barker_corr_th_min_mrc
= 390,
633 static void iwl4965_set_ct_threshold(struct iwl_priv
*priv
)
636 priv
->hw_params
.ct_kill_threshold
=
637 CELSIUS_TO_KELVIN(CT_KILL_THRESHOLD_LEGACY
);
641 * iwl4965_hw_set_hw_params
643 * Called when initializing driver
645 static int iwl4965_hw_set_hw_params(struct iwl_priv
*priv
)
647 if (priv
->cfg
->mod_params
->num_of_queues
>= IWL_MIN_NUM_QUEUES
&&
648 priv
->cfg
->mod_params
->num_of_queues
<= IWL49_NUM_QUEUES
)
649 priv
->cfg
->num_of_queues
=
650 priv
->cfg
->mod_params
->num_of_queues
;
652 priv
->hw_params
.max_txq_num
= priv
->cfg
->num_of_queues
;
653 priv
->hw_params
.dma_chnl_num
= FH49_TCSR_CHNL_NUM
;
654 priv
->hw_params
.scd_bc_tbls_size
=
655 priv
->cfg
->num_of_queues
*
656 sizeof(struct iwl4965_scd_bc_tbl
);
657 priv
->hw_params
.tfd_size
= sizeof(struct iwl_tfd
);
658 priv
->hw_params
.max_stations
= IWL4965_STATION_COUNT
;
659 priv
->hw_params
.bcast_sta_id
= IWL4965_BROADCAST_ID
;
660 priv
->hw_params
.max_data_size
= IWL49_RTC_DATA_SIZE
;
661 priv
->hw_params
.max_inst_size
= IWL49_RTC_INST_SIZE
;
662 priv
->hw_params
.max_bsm_size
= BSM_SRAM_SIZE
;
663 priv
->hw_params
.ht40_channel
= BIT(IEEE80211_BAND_5GHZ
);
665 priv
->hw_params
.rx_wrt_ptr_reg
= FH_RSCSR_CHNL0_WPTR
;
667 priv
->hw_params
.tx_chains_num
= num_of_ant(priv
->cfg
->valid_tx_ant
);
668 priv
->hw_params
.rx_chains_num
= num_of_ant(priv
->cfg
->valid_rx_ant
);
669 priv
->hw_params
.valid_tx_ant
= priv
->cfg
->valid_tx_ant
;
670 priv
->hw_params
.valid_rx_ant
= priv
->cfg
->valid_rx_ant
;
671 if (priv
->cfg
->ops
->lib
->temp_ops
.set_ct_kill
)
672 priv
->cfg
->ops
->lib
->temp_ops
.set_ct_kill(priv
);
674 priv
->hw_params
.sens
= &iwl4965_sensitivity
;
675 priv
->hw_params
.beacon_time_tsf_bits
= IWLAGN_EXT_BEACON_TIME_POS
;
680 static s32
iwl4965_math_div_round(s32 num
, s32 denom
, s32
*res
)
693 *res
= ((num
* 2 + denom
) / (denom
* 2)) * sign
;
699 * iwl4965_get_voltage_compensation - Power supply voltage comp for txpower
701 * Determines power supply voltage compensation for txpower calculations.
702 * Returns number of 1/2-dB steps to subtract from gain table index,
703 * to compensate for difference between power supply voltage during
704 * factory measurements, vs. current power supply voltage.
706 * Voltage indication is higher for lower voltage.
707 * Lower voltage requires more gain (lower gain table index).
709 static s32
iwl4965_get_voltage_compensation(s32 eeprom_voltage
,
714 if ((TX_POWER_IWL_ILLEGAL_VOLTAGE
== eeprom_voltage
) ||
715 (TX_POWER_IWL_ILLEGAL_VOLTAGE
== current_voltage
))
718 iwl4965_math_div_round(current_voltage
- eeprom_voltage
,
719 TX_POWER_IWL_VOLTAGE_CODES_PER_03V
, &comp
);
721 if (current_voltage
> eeprom_voltage
)
723 if ((comp
< -2) || (comp
> 2))
729 static s32
iwl4965_get_tx_atten_grp(u16 channel
)
731 if (channel
>= CALIB_IWL_TX_ATTEN_GR5_FCH
&&
732 channel
<= CALIB_IWL_TX_ATTEN_GR5_LCH
)
733 return CALIB_CH_GROUP_5
;
735 if (channel
>= CALIB_IWL_TX_ATTEN_GR1_FCH
&&
736 channel
<= CALIB_IWL_TX_ATTEN_GR1_LCH
)
737 return CALIB_CH_GROUP_1
;
739 if (channel
>= CALIB_IWL_TX_ATTEN_GR2_FCH
&&
740 channel
<= CALIB_IWL_TX_ATTEN_GR2_LCH
)
741 return CALIB_CH_GROUP_2
;
743 if (channel
>= CALIB_IWL_TX_ATTEN_GR3_FCH
&&
744 channel
<= CALIB_IWL_TX_ATTEN_GR3_LCH
)
745 return CALIB_CH_GROUP_3
;
747 if (channel
>= CALIB_IWL_TX_ATTEN_GR4_FCH
&&
748 channel
<= CALIB_IWL_TX_ATTEN_GR4_LCH
)
749 return CALIB_CH_GROUP_4
;
754 static u32
iwl4965_get_sub_band(const struct iwl_priv
*priv
, u32 channel
)
758 for (b
= 0; b
< EEPROM_TX_POWER_BANDS
; b
++) {
759 if (priv
->calib_info
->band_info
[b
].ch_from
== 0)
762 if ((channel
>= priv
->calib_info
->band_info
[b
].ch_from
)
763 && (channel
<= priv
->calib_info
->band_info
[b
].ch_to
))
770 static s32
iwl4965_interpolate_value(s32 x
, s32 x1
, s32 y1
, s32 x2
, s32 y2
)
777 iwl4965_math_div_round((x2
- x
) * (y1
- y2
), (x2
- x1
), &val
);
783 * iwl4965_interpolate_chan - Interpolate factory measurements for one channel
785 * Interpolates factory measurements from the two sample channels within a
786 * sub-band, to apply to channel of interest. Interpolation is proportional to
787 * differences in channel frequencies, which is proportional to differences
790 static int iwl4965_interpolate_chan(struct iwl_priv
*priv
, u32 channel
,
791 struct iwl_eeprom_calib_ch_info
*chan_info
)
796 const struct iwl_eeprom_calib_measure
*m1
;
797 const struct iwl_eeprom_calib_measure
*m2
;
798 struct iwl_eeprom_calib_measure
*omeas
;
802 s
= iwl4965_get_sub_band(priv
, channel
);
803 if (s
>= EEPROM_TX_POWER_BANDS
) {
804 IWL_ERR(priv
, "Tx Power can not find channel %d\n", channel
);
808 ch_i1
= priv
->calib_info
->band_info
[s
].ch1
.ch_num
;
809 ch_i2
= priv
->calib_info
->band_info
[s
].ch2
.ch_num
;
810 chan_info
->ch_num
= (u8
) channel
;
812 IWL_DEBUG_TXPOWER(priv
, "channel %d subband %d factory cal ch %d & %d\n",
813 channel
, s
, ch_i1
, ch_i2
);
815 for (c
= 0; c
< EEPROM_TX_POWER_TX_CHAINS
; c
++) {
816 for (m
= 0; m
< EEPROM_TX_POWER_MEASUREMENTS
; m
++) {
817 m1
= &(priv
->calib_info
->band_info
[s
].ch1
.
819 m2
= &(priv
->calib_info
->band_info
[s
].ch2
.
821 omeas
= &(chan_info
->measurements
[c
][m
]);
824 (u8
) iwl4965_interpolate_value(channel
, ch_i1
,
829 (u8
) iwl4965_interpolate_value(channel
, ch_i1
,
833 (u8
) iwl4965_interpolate_value(channel
, ch_i1
,
838 (s8
) iwl4965_interpolate_value(channel
, ch_i1
,
842 IWL_DEBUG_TXPOWER(priv
,
843 "chain %d meas %d AP1=%d AP2=%d AP=%d\n", c
, m
,
844 m1
->actual_pow
, m2
->actual_pow
, omeas
->actual_pow
);
845 IWL_DEBUG_TXPOWER(priv
,
846 "chain %d meas %d NI1=%d NI2=%d NI=%d\n", c
, m
,
847 m1
->gain_idx
, m2
->gain_idx
, omeas
->gain_idx
);
848 IWL_DEBUG_TXPOWER(priv
,
849 "chain %d meas %d PA1=%d PA2=%d PA=%d\n", c
, m
,
850 m1
->pa_det
, m2
->pa_det
, omeas
->pa_det
);
851 IWL_DEBUG_TXPOWER(priv
,
852 "chain %d meas %d T1=%d T2=%d T=%d\n", c
, m
,
853 m1
->temperature
, m2
->temperature
,
861 /* bit-rate-dependent table to prevent Tx distortion, in half-dB units,
862 * for OFDM 6, 12, 18, 24, 36, 48, 54, 60 MBit, and CCK all rates. */
863 static s32 back_off_table
[] = {
864 10, 10, 10, 10, 10, 15, 17, 20, /* OFDM SISO 20 MHz */
865 10, 10, 10, 10, 10, 15, 17, 20, /* OFDM MIMO 20 MHz */
866 10, 10, 10, 10, 10, 15, 17, 20, /* OFDM SISO 40 MHz */
867 10, 10, 10, 10, 10, 15, 17, 20, /* OFDM MIMO 40 MHz */
871 /* Thermal compensation values for txpower for various frequency ranges ...
872 * ratios from 3:1 to 4.5:1 of degrees (Celsius) per half-dB gain adjust */
873 static struct iwl4965_txpower_comp_entry
{
874 s32 degrees_per_05db_a
;
875 s32 degrees_per_05db_a_denom
;
876 } tx_power_cmp_tble
[CALIB_CH_GROUP_MAX
] = {
877 {9, 2}, /* group 0 5.2, ch 34-43 */
878 {4, 1}, /* group 1 5.2, ch 44-70 */
879 {4, 1}, /* group 2 5.2, ch 71-124 */
880 {4, 1}, /* group 3 5.2, ch 125-200 */
881 {3, 1} /* group 4 2.4, ch all */
884 static s32
get_min_power_index(s32 rate_power_index
, u32 band
)
887 if ((rate_power_index
& 7) <= 4)
888 return MIN_TX_GAIN_INDEX_52GHZ_EXT
;
890 return MIN_TX_GAIN_INDEX
;
898 static const struct gain_entry gain_table
[2][108] = {
899 /* 5.2GHz power gain index table */
901 {123, 0x3F}, /* highest txpower */
1010 /* 2.4GHz power gain index table */
1012 {110, 0x3f}, /* highest txpower */
1123 static int iwl4965_fill_txpower_tbl(struct iwl_priv
*priv
, u8 band
, u16 channel
,
1124 u8 is_ht40
, u8 ctrl_chan_high
,
1125 struct iwl4965_tx_power_db
*tx_power_tbl
)
1127 u8 saturation_power
;
1129 s32 user_target_power
;
1133 s32 current_regulatory
;
1134 s32 txatten_grp
= CALIB_CH_GROUP_MAX
;
1137 const struct iwl_channel_info
*ch_info
= NULL
;
1138 struct iwl_eeprom_calib_ch_info ch_eeprom_info
;
1139 const struct iwl_eeprom_calib_measure
*measurement
;
1142 s32 voltage_compensation
;
1143 s32 degrees_per_05db_num
;
1144 s32 degrees_per_05db_denom
;
1146 s32 temperature_comp
[2];
1147 s32 factory_gain_index
[2];
1148 s32 factory_actual_pwr
[2];
1151 /* tx_power_user_lmt is in dBm, convert to half-dBm (half-dB units
1152 * are used for indexing into txpower table) */
1153 user_target_power
= 2 * priv
->tx_power_user_lmt
;
1155 /* Get current (RXON) channel, band, width */
1156 IWL_DEBUG_TXPOWER(priv
, "chan %d band %d is_ht40 %d\n", channel
, band
,
1159 ch_info
= iwl_get_channel_info(priv
, priv
->band
, channel
);
1161 if (!is_channel_valid(ch_info
))
1164 /* get txatten group, used to select 1) thermal txpower adjustment
1165 * and 2) mimo txpower balance between Tx chains. */
1166 txatten_grp
= iwl4965_get_tx_atten_grp(channel
);
1167 if (txatten_grp
< 0) {
1168 IWL_ERR(priv
, "Can't find txatten group for channel %d.\n",
1173 IWL_DEBUG_TXPOWER(priv
, "channel %d belongs to txatten group %d\n",
1174 channel
, txatten_grp
);
1183 /* hardware txpower limits ...
1184 * saturation (clipping distortion) txpowers are in half-dBm */
1186 saturation_power
= priv
->calib_info
->saturation_power24
;
1188 saturation_power
= priv
->calib_info
->saturation_power52
;
1190 if (saturation_power
< IWL_TX_POWER_SATURATION_MIN
||
1191 saturation_power
> IWL_TX_POWER_SATURATION_MAX
) {
1193 saturation_power
= IWL_TX_POWER_DEFAULT_SATURATION_24
;
1195 saturation_power
= IWL_TX_POWER_DEFAULT_SATURATION_52
;
1198 /* regulatory txpower limits ... reg_limit values are in half-dBm,
1199 * max_power_avg values are in dBm, convert * 2 */
1201 reg_limit
= ch_info
->ht40_max_power_avg
* 2;
1203 reg_limit
= ch_info
->max_power_avg
* 2;
1205 if ((reg_limit
< IWL_TX_POWER_REGULATORY_MIN
) ||
1206 (reg_limit
> IWL_TX_POWER_REGULATORY_MAX
)) {
1208 reg_limit
= IWL_TX_POWER_DEFAULT_REGULATORY_24
;
1210 reg_limit
= IWL_TX_POWER_DEFAULT_REGULATORY_52
;
1213 /* Interpolate txpower calibration values for this channel,
1214 * based on factory calibration tests on spaced channels. */
1215 iwl4965_interpolate_chan(priv
, channel
, &ch_eeprom_info
);
1217 /* calculate tx gain adjustment based on power supply voltage */
1218 voltage
= le16_to_cpu(priv
->calib_info
->voltage
);
1219 init_voltage
= (s32
)le32_to_cpu(priv
->card_alive_init
.voltage
);
1220 voltage_compensation
=
1221 iwl4965_get_voltage_compensation(voltage
, init_voltage
);
1223 IWL_DEBUG_TXPOWER(priv
, "curr volt %d eeprom volt %d volt comp %d\n",
1225 voltage
, voltage_compensation
);
1227 /* get current temperature (Celsius) */
1228 current_temp
= max(priv
->temperature
, IWL_TX_POWER_TEMPERATURE_MIN
);
1229 current_temp
= min(priv
->temperature
, IWL_TX_POWER_TEMPERATURE_MAX
);
1230 current_temp
= KELVIN_TO_CELSIUS(current_temp
);
1232 /* select thermal txpower adjustment params, based on channel group
1233 * (same frequency group used for mimo txatten adjustment) */
1234 degrees_per_05db_num
=
1235 tx_power_cmp_tble
[txatten_grp
].degrees_per_05db_a
;
1236 degrees_per_05db_denom
=
1237 tx_power_cmp_tble
[txatten_grp
].degrees_per_05db_a_denom
;
1239 /* get per-chain txpower values from factory measurements */
1240 for (c
= 0; c
< 2; c
++) {
1241 measurement
= &ch_eeprom_info
.measurements
[c
][1];
1243 /* txgain adjustment (in half-dB steps) based on difference
1244 * between factory and current temperature */
1245 factory_temp
= measurement
->temperature
;
1246 iwl4965_math_div_round((current_temp
- factory_temp
) *
1247 degrees_per_05db_denom
,
1248 degrees_per_05db_num
,
1249 &temperature_comp
[c
]);
1251 factory_gain_index
[c
] = measurement
->gain_idx
;
1252 factory_actual_pwr
[c
] = measurement
->actual_pow
;
1254 IWL_DEBUG_TXPOWER(priv
, "chain = %d\n", c
);
1255 IWL_DEBUG_TXPOWER(priv
, "fctry tmp %d, "
1256 "curr tmp %d, comp %d steps\n",
1257 factory_temp
, current_temp
,
1258 temperature_comp
[c
]);
1260 IWL_DEBUG_TXPOWER(priv
, "fctry idx %d, fctry pwr %d\n",
1261 factory_gain_index
[c
],
1262 factory_actual_pwr
[c
]);
1265 /* for each of 33 bit-rates (including 1 for CCK) */
1266 for (i
= 0; i
< POWER_TABLE_NUM_ENTRIES
; i
++) {
1268 union iwl4965_tx_power_dual_stream tx_power
;
1270 /* for mimo, reduce each chain's txpower by half
1271 * (3dB, 6 steps), so total output power is regulatory
1274 current_regulatory
= reg_limit
-
1275 IWL_TX_POWER_MIMO_REGULATORY_COMPENSATION
;
1278 current_regulatory
= reg_limit
;
1282 /* find txpower limit, either hardware or regulatory */
1283 power_limit
= saturation_power
- back_off_table
[i
];
1284 if (power_limit
> current_regulatory
)
1285 power_limit
= current_regulatory
;
1287 /* reduce user's txpower request if necessary
1288 * for this rate on this channel */
1289 target_power
= user_target_power
;
1290 if (target_power
> power_limit
)
1291 target_power
= power_limit
;
1293 IWL_DEBUG_TXPOWER(priv
, "rate %d sat %d reg %d usr %d tgt %d\n",
1294 i
, saturation_power
- back_off_table
[i
],
1295 current_regulatory
, user_target_power
,
1298 /* for each of 2 Tx chains (radio transmitters) */
1299 for (c
= 0; c
< 2; c
++) {
1304 (s32
)le32_to_cpu(priv
->card_alive_init
.
1305 tx_atten
[txatten_grp
][c
]);
1309 /* calculate index; higher index means lower txpower */
1310 power_index
= (u8
) (factory_gain_index
[c
] -
1312 factory_actual_pwr
[c
]) -
1313 temperature_comp
[c
] -
1314 voltage_compensation
+
1317 /* IWL_DEBUG_TXPOWER(priv, "calculated txpower index %d\n",
1320 if (power_index
< get_min_power_index(i
, band
))
1321 power_index
= get_min_power_index(i
, band
);
1323 /* adjust 5 GHz index to support negative indexes */
1327 /* CCK, rate 32, reduce txpower for CCK */
1328 if (i
== POWER_TABLE_CCK_ENTRY
)
1330 IWL_TX_POWER_CCK_COMPENSATION_C_STEP
;
1332 /* stay within the table! */
1333 if (power_index
> 107) {
1334 IWL_WARN(priv
, "txpower index %d > 107\n",
1338 if (power_index
< 0) {
1339 IWL_WARN(priv
, "txpower index %d < 0\n",
1344 /* fill txpower command for this rate/chain */
1345 tx_power
.s
.radio_tx_gain
[c
] =
1346 gain_table
[band
][power_index
].radio
;
1347 tx_power
.s
.dsp_predis_atten
[c
] =
1348 gain_table
[band
][power_index
].dsp
;
1350 IWL_DEBUG_TXPOWER(priv
, "chain %d mimo %d index %d "
1351 "gain 0x%02x dsp %d\n",
1352 c
, atten_value
, power_index
,
1353 tx_power
.s
.radio_tx_gain
[c
],
1354 tx_power
.s
.dsp_predis_atten
[c
]);
1355 } /* for each chain */
1357 tx_power_tbl
->power_tbl
[i
].dw
= cpu_to_le32(tx_power
.dw
);
1359 } /* for each rate */
1365 * iwl4965_send_tx_power - Configure the TXPOWER level user limit
1367 * Uses the active RXON for channel, band, and characteristics (ht40, high)
1368 * The power limit is taken from priv->tx_power_user_lmt.
1370 static int iwl4965_send_tx_power(struct iwl_priv
*priv
)
1372 struct iwl4965_txpowertable_cmd cmd
= { 0 };
1375 bool is_ht40
= false;
1376 u8 ctrl_chan_high
= 0;
1378 if (test_bit(STATUS_SCANNING
, &priv
->status
)) {
1379 /* If this gets hit a lot, switch it to a BUG() and catch
1380 * the stack trace to find out who is calling this during
1382 IWL_WARN(priv
, "TX Power requested while scanning!\n");
1386 band
= priv
->band
== IEEE80211_BAND_2GHZ
;
1388 is_ht40
= is_ht40_channel(priv
->active_rxon
.flags
);
1391 (priv
->active_rxon
.flags
& RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK
))
1395 cmd
.channel
= priv
->active_rxon
.channel
;
1397 ret
= iwl4965_fill_txpower_tbl(priv
, band
,
1398 le16_to_cpu(priv
->active_rxon
.channel
),
1399 is_ht40
, ctrl_chan_high
, &cmd
.tx_power
);
1403 ret
= iwl_send_cmd_pdu(priv
, REPLY_TX_PWR_TABLE_CMD
, sizeof(cmd
), &cmd
);
1409 static int iwl4965_send_rxon_assoc(struct iwl_priv
*priv
)
1412 struct iwl4965_rxon_assoc_cmd rxon_assoc
;
1413 const struct iwl_rxon_cmd
*rxon1
= &priv
->staging_rxon
;
1414 const struct iwl_rxon_cmd
*rxon2
= &priv
->active_rxon
;
1416 if ((rxon1
->flags
== rxon2
->flags
) &&
1417 (rxon1
->filter_flags
== rxon2
->filter_flags
) &&
1418 (rxon1
->cck_basic_rates
== rxon2
->cck_basic_rates
) &&
1419 (rxon1
->ofdm_ht_single_stream_basic_rates
==
1420 rxon2
->ofdm_ht_single_stream_basic_rates
) &&
1421 (rxon1
->ofdm_ht_dual_stream_basic_rates
==
1422 rxon2
->ofdm_ht_dual_stream_basic_rates
) &&
1423 (rxon1
->rx_chain
== rxon2
->rx_chain
) &&
1424 (rxon1
->ofdm_basic_rates
== rxon2
->ofdm_basic_rates
)) {
1425 IWL_DEBUG_INFO(priv
, "Using current RXON_ASSOC. Not resending.\n");
1429 rxon_assoc
.flags
= priv
->staging_rxon
.flags
;
1430 rxon_assoc
.filter_flags
= priv
->staging_rxon
.filter_flags
;
1431 rxon_assoc
.ofdm_basic_rates
= priv
->staging_rxon
.ofdm_basic_rates
;
1432 rxon_assoc
.cck_basic_rates
= priv
->staging_rxon
.cck_basic_rates
;
1433 rxon_assoc
.reserved
= 0;
1434 rxon_assoc
.ofdm_ht_single_stream_basic_rates
=
1435 priv
->staging_rxon
.ofdm_ht_single_stream_basic_rates
;
1436 rxon_assoc
.ofdm_ht_dual_stream_basic_rates
=
1437 priv
->staging_rxon
.ofdm_ht_dual_stream_basic_rates
;
1438 rxon_assoc
.rx_chain_select_flags
= priv
->staging_rxon
.rx_chain
;
1440 ret
= iwl_send_cmd_pdu_async(priv
, REPLY_RXON_ASSOC
,
1441 sizeof(rxon_assoc
), &rxon_assoc
, NULL
);
1448 static int iwl4965_hw_channel_switch(struct iwl_priv
*priv
,
1449 struct ieee80211_channel_switch
*ch_switch
)
1453 bool is_ht40
= false;
1454 u8 ctrl_chan_high
= 0;
1455 struct iwl4965_channel_switch_cmd cmd
;
1456 const struct iwl_channel_info
*ch_info
;
1457 u32 switch_time_in_usec
, ucode_switch_time
;
1461 u16 beacon_interval
= le16_to_cpu(priv
->rxon_timing
.beacon_interval
);
1462 struct ieee80211_vif
*vif
= priv
->vif
;
1463 band
= priv
->band
== IEEE80211_BAND_2GHZ
;
1465 is_ht40
= is_ht40_channel(priv
->staging_rxon
.flags
);
1468 (priv
->staging_rxon
.flags
& RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK
))
1472 cmd
.expect_beacon
= 0;
1473 ch
= ieee80211_frequency_to_channel(ch_switch
->channel
->center_freq
);
1474 cmd
.channel
= cpu_to_le16(ch
);
1475 cmd
.rxon_flags
= priv
->staging_rxon
.flags
;
1476 cmd
.rxon_filter_flags
= priv
->staging_rxon
.filter_flags
;
1477 switch_count
= ch_switch
->count
;
1478 tsf_low
= ch_switch
->timestamp
& 0x0ffffffff;
1480 * calculate the ucode channel switch time
1481 * adding TSF as one of the factor for when to switch
1483 if ((priv
->ucode_beacon_time
> tsf_low
) && beacon_interval
) {
1484 if (switch_count
> ((priv
->ucode_beacon_time
- tsf_low
) /
1486 switch_count
-= (priv
->ucode_beacon_time
-
1487 tsf_low
) / beacon_interval
;
1491 if (switch_count
<= 1)
1492 cmd
.switch_time
= cpu_to_le32(priv
->ucode_beacon_time
);
1494 switch_time_in_usec
=
1495 vif
->bss_conf
.beacon_int
* switch_count
* TIME_UNIT
;
1496 ucode_switch_time
= iwl_usecs_to_beacons(priv
,
1497 switch_time_in_usec
,
1499 cmd
.switch_time
= iwl_add_beacon_time(priv
,
1500 priv
->ucode_beacon_time
,
1504 IWL_DEBUG_11H(priv
, "uCode time for the switch is 0x%x\n",
1506 ch_info
= iwl_get_channel_info(priv
, priv
->band
, ch
);
1508 cmd
.expect_beacon
= is_channel_radar(ch_info
);
1510 IWL_ERR(priv
, "invalid channel switch from %u to %u\n",
1511 priv
->active_rxon
.channel
, ch
);
1515 rc
= iwl4965_fill_txpower_tbl(priv
, band
, ch
, is_ht40
,
1516 ctrl_chan_high
, &cmd
.tx_power
);
1518 IWL_DEBUG_11H(priv
, "error:%d fill txpower_tbl\n", rc
);
1522 priv
->switch_rxon
.channel
= cmd
.channel
;
1523 priv
->switch_rxon
.switch_in_progress
= true;
1525 return iwl_send_cmd_pdu(priv
, REPLY_CHANNEL_SWITCH
, sizeof(cmd
), &cmd
);
1529 * iwl4965_txq_update_byte_cnt_tbl - Set up entry in Tx byte-count array
1531 static void iwl4965_txq_update_byte_cnt_tbl(struct iwl_priv
*priv
,
1532 struct iwl_tx_queue
*txq
,
1535 struct iwl4965_scd_bc_tbl
*scd_bc_tbl
= priv
->scd_bc_tbls
.addr
;
1536 int txq_id
= txq
->q
.id
;
1537 int write_ptr
= txq
->q
.write_ptr
;
1538 int len
= byte_cnt
+ IWL_TX_CRC_SIZE
+ IWL_TX_DELIMITER_SIZE
;
1541 WARN_ON(len
> 0xFFF || write_ptr
>= TFD_QUEUE_SIZE_MAX
);
1543 bc_ent
= cpu_to_le16(len
& 0xFFF);
1544 /* Set up byte count within first 256 entries */
1545 scd_bc_tbl
[txq_id
].tfd_offset
[write_ptr
] = bc_ent
;
1547 /* If within first 64 entries, duplicate at end */
1548 if (write_ptr
< TFD_QUEUE_SIZE_BC_DUP
)
1550 tfd_offset
[TFD_QUEUE_SIZE_MAX
+ write_ptr
] = bc_ent
;
1554 * sign_extend - Sign extend a value using specified bit as sign-bit
1556 * Example: sign_extend(9, 3) would return -7 as bit3 of 1001b is 1
1557 * and bit0..2 is 001b which when sign extended to 1111111111111001b is -7.
1559 * @param oper value to sign extend
1560 * @param index 0 based bit index (0<=index<32) to sign bit
1562 static s32
sign_extend(u32 oper
, int index
)
1564 u8 shift
= 31 - index
;
1566 return (s32
)(oper
<< shift
) >> shift
;
1570 * iwl4965_hw_get_temperature - return the calibrated temperature (in Kelvin)
1571 * @statistics: Provides the temperature reading from the uCode
1573 * A return of <0 indicates bogus data in the statistics
1575 static int iwl4965_hw_get_temperature(struct iwl_priv
*priv
)
1582 if (test_bit(STATUS_TEMPERATURE
, &priv
->status
) &&
1583 (priv
->_agn
.statistics
.flag
&
1584 STATISTICS_REPLY_FLG_HT40_MODE_MSK
)) {
1585 IWL_DEBUG_TEMP(priv
, "Running HT40 temperature calibration\n");
1586 R1
= (s32
)le32_to_cpu(priv
->card_alive_init
.therm_r1
[1]);
1587 R2
= (s32
)le32_to_cpu(priv
->card_alive_init
.therm_r2
[1]);
1588 R3
= (s32
)le32_to_cpu(priv
->card_alive_init
.therm_r3
[1]);
1589 R4
= le32_to_cpu(priv
->card_alive_init
.therm_r4
[1]);
1591 IWL_DEBUG_TEMP(priv
, "Running temperature calibration\n");
1592 R1
= (s32
)le32_to_cpu(priv
->card_alive_init
.therm_r1
[0]);
1593 R2
= (s32
)le32_to_cpu(priv
->card_alive_init
.therm_r2
[0]);
1594 R3
= (s32
)le32_to_cpu(priv
->card_alive_init
.therm_r3
[0]);
1595 R4
= le32_to_cpu(priv
->card_alive_init
.therm_r4
[0]);
1599 * Temperature is only 23 bits, so sign extend out to 32.
1601 * NOTE If we haven't received a statistics notification yet
1602 * with an updated temperature, use R4 provided to us in the
1603 * "initialize" ALIVE response.
1605 if (!test_bit(STATUS_TEMPERATURE
, &priv
->status
))
1606 vt
= sign_extend(R4
, 23);
1608 vt
= sign_extend(le32_to_cpu(
1609 priv
->_agn
.statistics
.general
.temperature
), 23);
1611 IWL_DEBUG_TEMP(priv
, "Calib values R[1-3]: %d %d %d R4: %d\n", R1
, R2
, R3
, vt
);
1614 IWL_ERR(priv
, "Calibration conflict R1 == R3\n");
1618 /* Calculate temperature in degrees Kelvin, adjust by 97%.
1619 * Add offset to center the adjustment around 0 degrees Centigrade. */
1620 temperature
= TEMPERATURE_CALIB_A_VAL
* (vt
- R2
);
1621 temperature
/= (R3
- R1
);
1622 temperature
= (temperature
* 97) / 100 + TEMPERATURE_CALIB_KELVIN_OFFSET
;
1624 IWL_DEBUG_TEMP(priv
, "Calibrated temperature: %dK, %dC\n",
1625 temperature
, KELVIN_TO_CELSIUS(temperature
));
1630 /* Adjust Txpower only if temperature variance is greater than threshold. */
1631 #define IWL_TEMPERATURE_THRESHOLD 3
1634 * iwl4965_is_temp_calib_needed - determines if new calibration is needed
1636 * If the temperature changed has changed sufficiently, then a recalibration
1639 * Assumes caller will replace priv->last_temperature once calibration
1642 static int iwl4965_is_temp_calib_needed(struct iwl_priv
*priv
)
1646 if (!test_bit(STATUS_STATISTICS
, &priv
->status
)) {
1647 IWL_DEBUG_TEMP(priv
, "Temperature not updated -- no statistics.\n");
1651 temp_diff
= priv
->temperature
- priv
->last_temperature
;
1653 /* get absolute value */
1654 if (temp_diff
< 0) {
1655 IWL_DEBUG_POWER(priv
, "Getting cooler, delta %d\n", temp_diff
);
1656 temp_diff
= -temp_diff
;
1657 } else if (temp_diff
== 0)
1658 IWL_DEBUG_POWER(priv
, "Temperature unchanged\n");
1660 IWL_DEBUG_POWER(priv
, "Getting warmer, delta %d\n", temp_diff
);
1662 if (temp_diff
< IWL_TEMPERATURE_THRESHOLD
) {
1663 IWL_DEBUG_POWER(priv
, " => thermal txpower calib not needed\n");
1667 IWL_DEBUG_POWER(priv
, " => thermal txpower calib needed\n");
1672 static void iwl4965_temperature_calib(struct iwl_priv
*priv
)
1676 temp
= iwl4965_hw_get_temperature(priv
);
1680 if (priv
->temperature
!= temp
) {
1681 if (priv
->temperature
)
1682 IWL_DEBUG_TEMP(priv
, "Temperature changed "
1683 "from %dC to %dC\n",
1684 KELVIN_TO_CELSIUS(priv
->temperature
),
1685 KELVIN_TO_CELSIUS(temp
));
1687 IWL_DEBUG_TEMP(priv
, "Temperature "
1688 "initialized to %dC\n",
1689 KELVIN_TO_CELSIUS(temp
));
1692 priv
->temperature
= temp
;
1693 iwl_tt_handler(priv
);
1694 set_bit(STATUS_TEMPERATURE
, &priv
->status
);
1696 if (!priv
->disable_tx_power_cal
&&
1697 unlikely(!test_bit(STATUS_SCANNING
, &priv
->status
)) &&
1698 iwl4965_is_temp_calib_needed(priv
))
1699 queue_work(priv
->workqueue
, &priv
->txpower_work
);
1703 * iwl4965_tx_queue_stop_scheduler - Stop queue, but keep configuration
1705 static void iwl4965_tx_queue_stop_scheduler(struct iwl_priv
*priv
,
1708 /* Simply stop the queue, but don't change any configuration;
1709 * the SCD_ACT_EN bit is the write-enable mask for the ACTIVE bit. */
1710 iwl_write_prph(priv
,
1711 IWL49_SCD_QUEUE_STATUS_BITS(txq_id
),
1712 (0 << IWL49_SCD_QUEUE_STTS_REG_POS_ACTIVE
)|
1713 (1 << IWL49_SCD_QUEUE_STTS_REG_POS_SCD_ACT_EN
));
1717 * txq_id must be greater than IWL49_FIRST_AMPDU_QUEUE
1718 * priv->lock must be held by the caller
1720 static int iwl4965_txq_agg_disable(struct iwl_priv
*priv
, u16 txq_id
,
1721 u16 ssn_idx
, u8 tx_fifo
)
1723 if ((IWL49_FIRST_AMPDU_QUEUE
> txq_id
) ||
1724 (IWL49_FIRST_AMPDU_QUEUE
+ priv
->cfg
->num_of_ampdu_queues
1727 "queue number out of range: %d, must be %d to %d\n",
1728 txq_id
, IWL49_FIRST_AMPDU_QUEUE
,
1729 IWL49_FIRST_AMPDU_QUEUE
+
1730 priv
->cfg
->num_of_ampdu_queues
- 1);
1734 iwl4965_tx_queue_stop_scheduler(priv
, txq_id
);
1736 iwl_clear_bits_prph(priv
, IWL49_SCD_QUEUECHAIN_SEL
, (1 << txq_id
));
1738 priv
->txq
[txq_id
].q
.read_ptr
= (ssn_idx
& 0xff);
1739 priv
->txq
[txq_id
].q
.write_ptr
= (ssn_idx
& 0xff);
1740 /* supposes that ssn_idx is valid (!= 0xFFF) */
1741 iwl4965_set_wr_ptrs(priv
, txq_id
, ssn_idx
);
1743 iwl_clear_bits_prph(priv
, IWL49_SCD_INTERRUPT_MASK
, (1 << txq_id
));
1744 iwl_txq_ctx_deactivate(priv
, txq_id
);
1745 iwl4965_tx_queue_set_status(priv
, &priv
->txq
[txq_id
], tx_fifo
, 0);
1751 * iwl4965_tx_queue_set_q2ratid - Map unique receiver/tid combination to a queue
1753 static int iwl4965_tx_queue_set_q2ratid(struct iwl_priv
*priv
, u16 ra_tid
,
1760 scd_q2ratid
= ra_tid
& IWL_SCD_QUEUE_RA_TID_MAP_RATID_MSK
;
1762 tbl_dw_addr
= priv
->scd_base_addr
+
1763 IWL49_SCD_TRANSLATE_TBL_OFFSET_QUEUE(txq_id
);
1765 tbl_dw
= iwl_read_targ_mem(priv
, tbl_dw_addr
);
1768 tbl_dw
= (scd_q2ratid
<< 16) | (tbl_dw
& 0x0000FFFF);
1770 tbl_dw
= scd_q2ratid
| (tbl_dw
& 0xFFFF0000);
1772 iwl_write_targ_mem(priv
, tbl_dw_addr
, tbl_dw
);
1779 * iwl4965_tx_queue_agg_enable - Set up & enable aggregation for selected queue
1781 * NOTE: txq_id must be greater than IWL49_FIRST_AMPDU_QUEUE,
1782 * i.e. it must be one of the higher queues used for aggregation
1784 static int iwl4965_txq_agg_enable(struct iwl_priv
*priv
, int txq_id
,
1785 int tx_fifo
, int sta_id
, int tid
, u16 ssn_idx
)
1787 unsigned long flags
;
1791 if ((IWL49_FIRST_AMPDU_QUEUE
> txq_id
) ||
1792 (IWL49_FIRST_AMPDU_QUEUE
+ priv
->cfg
->num_of_ampdu_queues
1795 "queue number out of range: %d, must be %d to %d\n",
1796 txq_id
, IWL49_FIRST_AMPDU_QUEUE
,
1797 IWL49_FIRST_AMPDU_QUEUE
+
1798 priv
->cfg
->num_of_ampdu_queues
- 1);
1802 ra_tid
= BUILD_RAxTID(sta_id
, tid
);
1804 /* Modify device's station table to Tx this TID */
1805 ret
= iwl_sta_tx_modify_enable_tid(priv
, sta_id
, tid
);
1809 spin_lock_irqsave(&priv
->lock
, flags
);
1811 /* Stop this Tx queue before configuring it */
1812 iwl4965_tx_queue_stop_scheduler(priv
, txq_id
);
1814 /* Map receiver-address / traffic-ID to this queue */
1815 iwl4965_tx_queue_set_q2ratid(priv
, ra_tid
, txq_id
);
1817 /* Set this queue as a chain-building queue */
1818 iwl_set_bits_prph(priv
, IWL49_SCD_QUEUECHAIN_SEL
, (1 << txq_id
));
1820 /* Place first TFD at index corresponding to start sequence number.
1821 * Assumes that ssn_idx is valid (!= 0xFFF) */
1822 priv
->txq
[txq_id
].q
.read_ptr
= (ssn_idx
& 0xff);
1823 priv
->txq
[txq_id
].q
.write_ptr
= (ssn_idx
& 0xff);
1824 iwl4965_set_wr_ptrs(priv
, txq_id
, ssn_idx
);
1826 /* Set up Tx window size and frame limit for this queue */
1827 iwl_write_targ_mem(priv
,
1828 priv
->scd_base_addr
+ IWL49_SCD_CONTEXT_QUEUE_OFFSET(txq_id
),
1829 (SCD_WIN_SIZE
<< IWL49_SCD_QUEUE_CTX_REG1_WIN_SIZE_POS
) &
1830 IWL49_SCD_QUEUE_CTX_REG1_WIN_SIZE_MSK
);
1832 iwl_write_targ_mem(priv
, priv
->scd_base_addr
+
1833 IWL49_SCD_CONTEXT_QUEUE_OFFSET(txq_id
) + sizeof(u32
),
1834 (SCD_FRAME_LIMIT
<< IWL49_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_POS
)
1835 & IWL49_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_MSK
);
1837 iwl_set_bits_prph(priv
, IWL49_SCD_INTERRUPT_MASK
, (1 << txq_id
));
1839 /* Set up Status area in SRAM, map to Tx DMA/FIFO, activate the queue */
1840 iwl4965_tx_queue_set_status(priv
, &priv
->txq
[txq_id
], tx_fifo
, 1);
1842 spin_unlock_irqrestore(&priv
->lock
, flags
);
1848 static u16
iwl4965_get_hcmd_size(u8 cmd_id
, u16 len
)
1852 return (u16
) sizeof(struct iwl4965_rxon_cmd
);
1858 static u16
iwl4965_build_addsta_hcmd(const struct iwl_addsta_cmd
*cmd
, u8
*data
)
1860 struct iwl4965_addsta_cmd
*addsta
= (struct iwl4965_addsta_cmd
*)data
;
1861 addsta
->mode
= cmd
->mode
;
1862 memcpy(&addsta
->sta
, &cmd
->sta
, sizeof(struct sta_id_modify
));
1863 memcpy(&addsta
->key
, &cmd
->key
, sizeof(struct iwl4965_keyinfo
));
1864 addsta
->station_flags
= cmd
->station_flags
;
1865 addsta
->station_flags_msk
= cmd
->station_flags_msk
;
1866 addsta
->tid_disable_tx
= cmd
->tid_disable_tx
;
1867 addsta
->add_immediate_ba_tid
= cmd
->add_immediate_ba_tid
;
1868 addsta
->remove_immediate_ba_tid
= cmd
->remove_immediate_ba_tid
;
1869 addsta
->add_immediate_ba_ssn
= cmd
->add_immediate_ba_ssn
;
1870 addsta
->sleep_tx_count
= cmd
->sleep_tx_count
;
1871 addsta
->reserved1
= cpu_to_le16(0);
1872 addsta
->reserved2
= cpu_to_le16(0);
1874 return (u16
)sizeof(struct iwl4965_addsta_cmd
);
1877 static inline u32
iwl4965_get_scd_ssn(struct iwl4965_tx_resp
*tx_resp
)
1879 return le32_to_cpup(&tx_resp
->u
.status
+ tx_resp
->frame_count
) & MAX_SN
;
1883 * iwl4965_tx_status_reply_tx - Handle Tx response for frames in aggregation queue
1885 static int iwl4965_tx_status_reply_tx(struct iwl_priv
*priv
,
1886 struct iwl_ht_agg
*agg
,
1887 struct iwl4965_tx_resp
*tx_resp
,
1888 int txq_id
, u16 start_idx
)
1891 struct agg_tx_status
*frame_status
= tx_resp
->u
.agg_status
;
1892 struct ieee80211_tx_info
*info
= NULL
;
1893 struct ieee80211_hdr
*hdr
= NULL
;
1894 u32 rate_n_flags
= le32_to_cpu(tx_resp
->rate_n_flags
);
1897 if (agg
->wait_for_ba
)
1898 IWL_DEBUG_TX_REPLY(priv
, "got tx response w/o block-ack\n");
1900 agg
->frame_count
= tx_resp
->frame_count
;
1901 agg
->start_idx
= start_idx
;
1902 agg
->rate_n_flags
= rate_n_flags
;
1905 /* num frames attempted by Tx command */
1906 if (agg
->frame_count
== 1) {
1907 /* Only one frame was attempted; no block-ack will arrive */
1908 status
= le16_to_cpu(frame_status
[0].status
);
1911 /* FIXME: code repetition */
1912 IWL_DEBUG_TX_REPLY(priv
, "FrameCnt = %d, StartIdx=%d idx=%d\n",
1913 agg
->frame_count
, agg
->start_idx
, idx
);
1915 info
= IEEE80211_SKB_CB(priv
->txq
[txq_id
].txb
[idx
].skb
);
1916 info
->status
.rates
[0].count
= tx_resp
->failure_frame
+ 1;
1917 info
->flags
&= ~IEEE80211_TX_CTL_AMPDU
;
1918 info
->flags
|= iwl_tx_status_to_mac80211(status
);
1919 iwlagn_hwrate_to_tx_control(priv
, rate_n_flags
, info
);
1920 /* FIXME: code repetition end */
1922 IWL_DEBUG_TX_REPLY(priv
, "1 Frame 0x%x failure :%d\n",
1923 status
& 0xff, tx_resp
->failure_frame
);
1924 IWL_DEBUG_TX_REPLY(priv
, "Rate Info rate_n_flags=%x\n", rate_n_flags
);
1926 agg
->wait_for_ba
= 0;
1928 /* Two or more frames were attempted; expect block-ack */
1930 int start
= agg
->start_idx
;
1932 /* Construct bit-map of pending frames within Tx window */
1933 for (i
= 0; i
< agg
->frame_count
; i
++) {
1935 status
= le16_to_cpu(frame_status
[i
].status
);
1936 seq
= le16_to_cpu(frame_status
[i
].sequence
);
1937 idx
= SEQ_TO_INDEX(seq
);
1938 txq_id
= SEQ_TO_QUEUE(seq
);
1940 if (status
& (AGG_TX_STATE_FEW_BYTES_MSK
|
1941 AGG_TX_STATE_ABORT_MSK
))
1944 IWL_DEBUG_TX_REPLY(priv
, "FrameCnt = %d, txq_id=%d idx=%d\n",
1945 agg
->frame_count
, txq_id
, idx
);
1947 hdr
= iwl_tx_queue_get_hdr(priv
, txq_id
, idx
);
1950 "BUG_ON idx doesn't point to valid skb"
1951 " idx=%d, txq_id=%d\n", idx
, txq_id
);
1955 sc
= le16_to_cpu(hdr
->seq_ctrl
);
1956 if (idx
!= (SEQ_TO_SN(sc
) & 0xff)) {
1958 "BUG_ON idx doesn't match seq control"
1959 " idx=%d, seq_idx=%d, seq=%d\n",
1960 idx
, SEQ_TO_SN(sc
), hdr
->seq_ctrl
);
1964 IWL_DEBUG_TX_REPLY(priv
, "AGG Frame i=%d idx %d seq=%d\n",
1965 i
, idx
, SEQ_TO_SN(sc
));
1969 sh
= (start
- idx
) + 0xff;
1970 bitmap
= bitmap
<< sh
;
1973 } else if (sh
< -64)
1974 sh
= 0xff - (start
- idx
);
1978 bitmap
= bitmap
<< sh
;
1981 bitmap
|= 1ULL << sh
;
1982 IWL_DEBUG_TX_REPLY(priv
, "start=%d bitmap=0x%llx\n",
1983 start
, (unsigned long long)bitmap
);
1986 agg
->bitmap
= bitmap
;
1987 agg
->start_idx
= start
;
1988 IWL_DEBUG_TX_REPLY(priv
, "Frames %d start_idx=%d bitmap=0x%llx\n",
1989 agg
->frame_count
, agg
->start_idx
,
1990 (unsigned long long)agg
->bitmap
);
1993 agg
->wait_for_ba
= 1;
1998 static u8
iwl_find_station(struct iwl_priv
*priv
, const u8
*addr
)
2002 int ret
= IWL_INVALID_STATION
;
2003 unsigned long flags
;
2005 if ((priv
->iw_mode
== NL80211_IFTYPE_ADHOC
) ||
2006 (priv
->iw_mode
== NL80211_IFTYPE_AP
))
2009 if (is_broadcast_ether_addr(addr
))
2010 return priv
->hw_params
.bcast_sta_id
;
2012 spin_lock_irqsave(&priv
->sta_lock
, flags
);
2013 for (i
= start
; i
< priv
->hw_params
.max_stations
; i
++)
2014 if (priv
->stations
[i
].used
&&
2015 (!compare_ether_addr(priv
->stations
[i
].sta
.sta
.addr
,
2021 IWL_DEBUG_ASSOC_LIMIT(priv
, "can not find STA %pM total %d\n",
2022 addr
, priv
->num_stations
);
2026 * It may be possible that more commands interacting with stations
2027 * arrive before we completed processing the adding of
2030 if (ret
!= IWL_INVALID_STATION
&&
2031 (!(priv
->stations
[ret
].used
& IWL_STA_UCODE_ACTIVE
) ||
2032 ((priv
->stations
[ret
].used
& IWL_STA_UCODE_ACTIVE
) &&
2033 (priv
->stations
[ret
].used
& IWL_STA_UCODE_INPROGRESS
)))) {
2034 IWL_ERR(priv
, "Requested station info for sta %d before ready.\n",
2036 ret
= IWL_INVALID_STATION
;
2038 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
2042 static int iwl_get_ra_sta_id(struct iwl_priv
*priv
, struct ieee80211_hdr
*hdr
)
2044 if (priv
->iw_mode
== NL80211_IFTYPE_STATION
) {
2047 u8
*da
= ieee80211_get_DA(hdr
);
2048 return iwl_find_station(priv
, da
);
2053 * iwl4965_rx_reply_tx - Handle standard (non-aggregation) Tx response
2055 static void iwl4965_rx_reply_tx(struct iwl_priv
*priv
,
2056 struct iwl_rx_mem_buffer
*rxb
)
2058 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
2059 u16 sequence
= le16_to_cpu(pkt
->hdr
.sequence
);
2060 int txq_id
= SEQ_TO_QUEUE(sequence
);
2061 int index
= SEQ_TO_INDEX(sequence
);
2062 struct iwl_tx_queue
*txq
= &priv
->txq
[txq_id
];
2063 struct ieee80211_hdr
*hdr
;
2064 struct ieee80211_tx_info
*info
;
2065 struct iwl4965_tx_resp
*tx_resp
= (void *)&pkt
->u
.raw
[0];
2066 u32 status
= le32_to_cpu(tx_resp
->u
.status
);
2067 int uninitialized_var(tid
);
2071 unsigned long flags
;
2073 if ((index
>= txq
->q
.n_bd
) || (iwl_queue_used(&txq
->q
, index
) == 0)) {
2074 IWL_ERR(priv
, "Read index for DMA queue txq_id (%d) index %d "
2075 "is out of range [0-%d] %d %d\n", txq_id
,
2076 index
, txq
->q
.n_bd
, txq
->q
.write_ptr
,
2081 info
= IEEE80211_SKB_CB(txq
->txb
[txq
->q
.read_ptr
].skb
);
2082 memset(&info
->status
, 0, sizeof(info
->status
));
2084 hdr
= iwl_tx_queue_get_hdr(priv
, txq_id
, index
);
2085 if (ieee80211_is_data_qos(hdr
->frame_control
)) {
2086 qc
= ieee80211_get_qos_ctl(hdr
);
2090 sta_id
= iwl_get_ra_sta_id(priv
, hdr
);
2091 if (txq
->sched_retry
&& unlikely(sta_id
== IWL_INVALID_STATION
)) {
2092 IWL_ERR(priv
, "Station not known\n");
2096 spin_lock_irqsave(&priv
->sta_lock
, flags
);
2097 if (txq
->sched_retry
) {
2098 const u32 scd_ssn
= iwl4965_get_scd_ssn(tx_resp
);
2099 struct iwl_ht_agg
*agg
= NULL
;
2102 agg
= &priv
->stations
[sta_id
].tid
[tid
].agg
;
2104 iwl4965_tx_status_reply_tx(priv
, agg
, tx_resp
, txq_id
, index
);
2106 /* check if BAR is needed */
2107 if ((tx_resp
->frame_count
== 1) && !iwl_is_tx_success(status
))
2108 info
->flags
|= IEEE80211_TX_STAT_AMPDU_NO_BACK
;
2110 if (txq
->q
.read_ptr
!= (scd_ssn
& 0xff)) {
2111 index
= iwl_queue_dec_wrap(scd_ssn
& 0xff, txq
->q
.n_bd
);
2112 IWL_DEBUG_TX_REPLY(priv
, "Retry scheduler reclaim scd_ssn "
2113 "%d index %d\n", scd_ssn
, index
);
2114 freed
= iwlagn_tx_queue_reclaim(priv
, txq_id
, index
);
2116 iwl_free_tfds_in_queue(priv
, sta_id
,
2119 if (priv
->mac80211_registered
&&
2120 (iwl_queue_space(&txq
->q
) > txq
->q
.low_mark
) &&
2121 (agg
->state
!= IWL_EMPTYING_HW_QUEUE_DELBA
)) {
2122 if (agg
->state
== IWL_AGG_OFF
)
2123 iwl_wake_queue(priv
, txq_id
);
2125 iwl_wake_queue(priv
, txq
->swq_id
);
2129 info
->status
.rates
[0].count
= tx_resp
->failure_frame
+ 1;
2130 info
->flags
|= iwl_tx_status_to_mac80211(status
);
2131 iwlagn_hwrate_to_tx_control(priv
,
2132 le32_to_cpu(tx_resp
->rate_n_flags
),
2135 IWL_DEBUG_TX_REPLY(priv
, "TXQ %d status %s (0x%08x) "
2136 "rate_n_flags 0x%x retries %d\n",
2138 iwl_get_tx_fail_reason(status
), status
,
2139 le32_to_cpu(tx_resp
->rate_n_flags
),
2140 tx_resp
->failure_frame
);
2142 freed
= iwlagn_tx_queue_reclaim(priv
, txq_id
, index
);
2143 if (qc
&& likely(sta_id
!= IWL_INVALID_STATION
))
2144 iwl_free_tfds_in_queue(priv
, sta_id
, tid
, freed
);
2145 else if (sta_id
== IWL_INVALID_STATION
)
2146 IWL_DEBUG_TX_REPLY(priv
, "Station not known\n");
2148 if (priv
->mac80211_registered
&&
2149 (iwl_queue_space(&txq
->q
) > txq
->q
.low_mark
))
2150 iwl_wake_queue(priv
, txq_id
);
2152 if (qc
&& likely(sta_id
!= IWL_INVALID_STATION
))
2153 iwlagn_txq_check_empty(priv
, sta_id
, tid
, txq_id
);
2155 iwl_check_abort_status(priv
, tx_resp
->frame_count
, status
);
2157 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
2160 static int iwl4965_calc_rssi(struct iwl_priv
*priv
,
2161 struct iwl_rx_phy_res
*rx_resp
)
2163 /* data from PHY/DSP regarding signal strength, etc.,
2164 * contents are always there, not configurable by host. */
2165 struct iwl4965_rx_non_cfg_phy
*ncphy
=
2166 (struct iwl4965_rx_non_cfg_phy
*)rx_resp
->non_cfg_phy_buf
;
2167 u32 agc
= (le16_to_cpu(ncphy
->agc_info
) & IWL49_AGC_DB_MASK
)
2168 >> IWL49_AGC_DB_POS
;
2170 u32 valid_antennae
=
2171 (le16_to_cpu(rx_resp
->phy_flags
) & IWL49_RX_PHY_FLAGS_ANTENNAE_MASK
)
2172 >> IWL49_RX_PHY_FLAGS_ANTENNAE_OFFSET
;
2176 /* Find max rssi among 3 possible receivers.
2177 * These values are measured by the digital signal processor (DSP).
2178 * They should stay fairly constant even as the signal strength varies,
2179 * if the radio's automatic gain control (AGC) is working right.
2180 * AGC value (see below) will provide the "interesting" info. */
2181 for (i
= 0; i
< 3; i
++)
2182 if (valid_antennae
& (1 << i
))
2183 max_rssi
= max(ncphy
->rssi_info
[i
<< 1], max_rssi
);
2185 IWL_DEBUG_STATS(priv
, "Rssi In A %d B %d C %d Max %d AGC dB %d\n",
2186 ncphy
->rssi_info
[0], ncphy
->rssi_info
[2], ncphy
->rssi_info
[4],
2189 /* dBm = max_rssi dB - agc dB - constant.
2190 * Higher AGC (higher radio gain) means lower signal. */
2191 return max_rssi
- agc
- IWLAGN_RSSI_OFFSET
;
2195 /* Set up 4965-specific Rx frame reply handlers */
2196 static void iwl4965_rx_handler_setup(struct iwl_priv
*priv
)
2198 /* Legacy Rx frames */
2199 priv
->rx_handlers
[REPLY_RX
] = iwlagn_rx_reply_rx
;
2201 priv
->rx_handlers
[REPLY_TX
] = iwl4965_rx_reply_tx
;
2204 static void iwl4965_setup_deferred_work(struct iwl_priv
*priv
)
2206 INIT_WORK(&priv
->txpower_work
, iwl4965_bg_txpower_work
);
2209 static void iwl4965_cancel_deferred_work(struct iwl_priv
*priv
)
2211 cancel_work_sync(&priv
->txpower_work
);
2214 static struct iwl_hcmd_ops iwl4965_hcmd
= {
2215 .rxon_assoc
= iwl4965_send_rxon_assoc
,
2216 .commit_rxon
= iwl_commit_rxon
,
2217 .set_rxon_chain
= iwl_set_rxon_chain
,
2218 .send_bt_config
= iwl_send_bt_config
,
2221 static struct iwl_hcmd_utils_ops iwl4965_hcmd_utils
= {
2222 .get_hcmd_size
= iwl4965_get_hcmd_size
,
2223 .build_addsta_hcmd
= iwl4965_build_addsta_hcmd
,
2224 .chain_noise_reset
= iwl4965_chain_noise_reset
,
2225 .gain_computation
= iwl4965_gain_computation
,
2226 .rts_tx_cmd_flag
= iwlcore_rts_tx_cmd_flag
,
2227 .calc_rssi
= iwl4965_calc_rssi
,
2228 .request_scan
= iwlagn_request_scan
,
2231 static struct iwl_lib_ops iwl4965_lib
= {
2232 .set_hw_params
= iwl4965_hw_set_hw_params
,
2233 .txq_update_byte_cnt_tbl
= iwl4965_txq_update_byte_cnt_tbl
,
2234 .txq_set_sched
= iwl4965_txq_set_sched
,
2235 .txq_agg_enable
= iwl4965_txq_agg_enable
,
2236 .txq_agg_disable
= iwl4965_txq_agg_disable
,
2237 .txq_attach_buf_to_tfd
= iwl_hw_txq_attach_buf_to_tfd
,
2238 .txq_free_tfd
= iwl_hw_txq_free_tfd
,
2239 .txq_init
= iwl_hw_tx_queue_init
,
2240 .rx_handler_setup
= iwl4965_rx_handler_setup
,
2241 .setup_deferred_work
= iwl4965_setup_deferred_work
,
2242 .cancel_deferred_work
= iwl4965_cancel_deferred_work
,
2243 .is_valid_rtc_data_addr
= iwl4965_hw_valid_rtc_data_addr
,
2244 .alive_notify
= iwl4965_alive_notify
,
2245 .init_alive_start
= iwl4965_init_alive_start
,
2246 .load_ucode
= iwl4965_load_bsm
,
2247 .dump_nic_event_log
= iwl_dump_nic_event_log
,
2248 .dump_nic_error_log
= iwl_dump_nic_error_log
,
2249 .dump_fh
= iwl_dump_fh
,
2250 .set_channel_switch
= iwl4965_hw_channel_switch
,
2252 .init
= iwl_apm_init
,
2253 .stop
= iwl_apm_stop
,
2254 .config
= iwl4965_nic_config
,
2255 .set_pwr_src
= iwl_set_pwr_src
,
2258 .regulatory_bands
= {
2259 EEPROM_REGULATORY_BAND_1_CHANNELS
,
2260 EEPROM_REGULATORY_BAND_2_CHANNELS
,
2261 EEPROM_REGULATORY_BAND_3_CHANNELS
,
2262 EEPROM_REGULATORY_BAND_4_CHANNELS
,
2263 EEPROM_REGULATORY_BAND_5_CHANNELS
,
2264 EEPROM_4965_REGULATORY_BAND_24_HT40_CHANNELS
,
2265 EEPROM_4965_REGULATORY_BAND_52_HT40_CHANNELS
2267 .verify_signature
= iwlcore_eeprom_verify_signature
,
2268 .acquire_semaphore
= iwlcore_eeprom_acquire_semaphore
,
2269 .release_semaphore
= iwlcore_eeprom_release_semaphore
,
2270 .calib_version
= iwl4965_eeprom_calib_version
,
2271 .query_addr
= iwlcore_eeprom_query_addr
,
2273 .send_tx_power
= iwl4965_send_tx_power
,
2274 .update_chain_flags
= iwl_update_chain_flags
,
2275 .post_associate
= iwl_post_associate
,
2276 .config_ap
= iwl_config_ap
,
2277 .isr
= iwl_isr_legacy
,
2279 .temperature
= iwl4965_temperature_calib
,
2280 .set_ct_kill
= iwl4965_set_ct_threshold
,
2282 .manage_ibss_station
= iwlagn_manage_ibss_station
,
2283 .update_bcast_station
= iwl_update_bcast_station
,
2285 .rx_stats_read
= iwl_ucode_rx_stats_read
,
2286 .tx_stats_read
= iwl_ucode_tx_stats_read
,
2287 .general_stats_read
= iwl_ucode_general_stats_read
,
2289 .check_plcp_health
= iwl_good_plcp_health
,
2292 static const struct iwl_ops iwl4965_ops
= {
2293 .lib
= &iwl4965_lib
,
2294 .hcmd
= &iwl4965_hcmd
,
2295 .utils
= &iwl4965_hcmd_utils
,
2296 .led
= &iwlagn_led_ops
,
2299 struct iwl_cfg iwl4965_agn_cfg
= {
2300 .name
= "Intel(R) Wireless WiFi Link 4965AGN",
2301 .fw_name_pre
= IWL4965_FW_PRE
,
2302 .ucode_api_max
= IWL4965_UCODE_API_MAX
,
2303 .ucode_api_min
= IWL4965_UCODE_API_MIN
,
2304 .sku
= IWL_SKU_A
|IWL_SKU_G
|IWL_SKU_N
,
2305 .eeprom_size
= IWL4965_EEPROM_IMG_SIZE
,
2306 .eeprom_ver
= EEPROM_4965_EEPROM_VERSION
,
2307 .eeprom_calib_ver
= EEPROM_4965_TX_POWER_VERSION
,
2308 .ops
= &iwl4965_ops
,
2309 .num_of_queues
= IWL49_NUM_QUEUES
,
2310 .num_of_ampdu_queues
= IWL49_NUM_AMPDU_QUEUES
,
2311 .mod_params
= &iwlagn_mod_params
,
2312 .valid_tx_ant
= ANT_AB
,
2313 .valid_rx_ant
= ANT_ABC
,
2317 .use_isr_legacy
= true,
2318 .ht_greenfield_support
= false,
2319 .broken_powersave
= true,
2320 .led_compensation
= 61,
2321 .chain_noise_num_beacons
= IWL4965_CAL_NUM_BEACONS
,
2322 .plcp_delta_threshold
= IWL_MAX_PLCP_ERR_THRESHOLD_DEF
,
2323 .monitor_recover_period
= IWL_MONITORING_PERIOD
,
2324 .temperature_kelvin
= true,
2325 .max_event_log_size
= 512,
2326 .tx_power_by_driver
= true,
2327 .ucode_tracing
= true,
2328 .sensitivity_calib_by_driver
= true,
2329 .chain_noise_calib_by_driver
= true,
2331 * Force use of chains B and C for scan RX on 5 GHz band
2332 * because the device has off-channel reception on chain A.
2334 .scan_rx_antennas
[IEEE80211_BAND_5GHZ
] = ANT_BC
,
2337 /* Module firmware */
2338 MODULE_FIRMWARE(IWL4965_MODULE_FIRMWARE(IWL4965_UCODE_API_MAX
));