1 /******************************************************************************
3 * Copyright(c) 2003 - 2009 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/skbuff.h>
34 #include <linux/netdevice.h>
35 #include <linux/wireless.h>
36 #include <net/mac80211.h>
37 #include <linux/etherdevice.h>
38 #include <asm/unaligned.h>
40 #include "iwl-eeprom.h"
44 #include "iwl-helpers.h"
45 #include "iwl-calib.h"
48 static int iwl4965_send_tx_power(struct iwl_priv
*priv
);
49 static int iwl4965_hw_get_temperature(const struct iwl_priv
*priv
);
51 /* Highest firmware API version supported */
52 #define IWL4965_UCODE_API_MAX 2
54 /* Lowest firmware API version supported */
55 #define IWL4965_UCODE_API_MIN 2
57 #define IWL4965_FW_PRE "iwlwifi-4965-"
58 #define _IWL4965_MODULE_FIRMWARE(api) IWL4965_FW_PRE #api ".ucode"
59 #define IWL4965_MODULE_FIRMWARE(api) _IWL4965_MODULE_FIRMWARE(api)
62 /* module parameters */
63 static struct iwl_mod_params iwl4965_mod_params
= {
64 .num_of_queues
= IWL49_NUM_QUEUES
,
65 .num_of_ampdu_queues
= IWL49_NUM_AMPDU_QUEUES
,
68 /* the rest are 0 by default */
71 /* check contents of special bootstrap uCode SRAM */
72 static int iwl4965_verify_bsm(struct iwl_priv
*priv
)
74 __le32
*image
= priv
->ucode_boot
.v_addr
;
75 u32 len
= priv
->ucode_boot
.len
;
79 IWL_DEBUG_INFO(priv
, "Begin verify bsm\n");
81 /* verify BSM SRAM contents */
82 val
= iwl_read_prph(priv
, BSM_WR_DWCOUNT_REG
);
83 for (reg
= BSM_SRAM_LOWER_BOUND
;
84 reg
< BSM_SRAM_LOWER_BOUND
+ len
;
85 reg
+= sizeof(u32
), image
++) {
86 val
= iwl_read_prph(priv
, reg
);
87 if (val
!= le32_to_cpu(*image
)) {
88 IWL_ERR(priv
, "BSM uCode verification failed at "
89 "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
91 reg
- BSM_SRAM_LOWER_BOUND
, len
,
92 val
, le32_to_cpu(*image
));
97 IWL_DEBUG_INFO(priv
, "BSM bootstrap uCode image OK\n");
103 * iwl4965_load_bsm - Load bootstrap instructions
107 * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
108 * in special SRAM that does not power down during RFKILL. When powering back
109 * up after power-saving sleeps (or during initial uCode load), the BSM loads
110 * the bootstrap program into the on-board processor, and starts it.
112 * The bootstrap program loads (via DMA) instructions and data for a new
113 * program from host DRAM locations indicated by the host driver in the
114 * BSM_DRAM_* registers. Once the new program is loaded, it starts
117 * When initializing the NIC, the host driver points the BSM to the
118 * "initialize" uCode image. This uCode sets up some internal data, then
119 * notifies host via "initialize alive" that it is complete.
121 * The host then replaces the BSM_DRAM_* pointer values to point to the
122 * normal runtime uCode instructions and a backup uCode data cache buffer
123 * (filled initially with starting data values for the on-board processor),
124 * then triggers the "initialize" uCode to load and launch the runtime uCode,
125 * which begins normal operation.
127 * When doing a power-save shutdown, runtime uCode saves data SRAM into
128 * the backup data cache in DRAM before SRAM is powered down.
130 * When powering back up, the BSM loads the bootstrap program. This reloads
131 * the runtime uCode instructions and the backup data cache into SRAM,
132 * and re-launches the runtime uCode from where it left off.
134 static int iwl4965_load_bsm(struct iwl_priv
*priv
)
136 __le32
*image
= priv
->ucode_boot
.v_addr
;
137 u32 len
= priv
->ucode_boot
.len
;
147 IWL_DEBUG_INFO(priv
, "Begin load bsm\n");
149 priv
->ucode_type
= UCODE_RT
;
151 /* make sure bootstrap program is no larger than BSM's SRAM size */
152 if (len
> IWL49_MAX_BSM_SIZE
)
155 /* Tell bootstrap uCode where to find the "Initialize" uCode
156 * in host DRAM ... host DRAM physical address bits 35:4 for 4965.
157 * NOTE: iwl_init_alive_start() will replace these values,
158 * after the "initialize" uCode has run, to point to
159 * runtime/protocol instructions and backup data cache.
161 pinst
= priv
->ucode_init
.p_addr
>> 4;
162 pdata
= priv
->ucode_init_data
.p_addr
>> 4;
163 inst_len
= priv
->ucode_init
.len
;
164 data_len
= priv
->ucode_init_data
.len
;
166 ret
= iwl_grab_nic_access(priv
);
170 iwl_write_prph(priv
, BSM_DRAM_INST_PTR_REG
, pinst
);
171 iwl_write_prph(priv
, BSM_DRAM_DATA_PTR_REG
, pdata
);
172 iwl_write_prph(priv
, BSM_DRAM_INST_BYTECOUNT_REG
, inst_len
);
173 iwl_write_prph(priv
, BSM_DRAM_DATA_BYTECOUNT_REG
, data_len
);
175 /* Fill BSM memory with bootstrap instructions */
176 for (reg_offset
= BSM_SRAM_LOWER_BOUND
;
177 reg_offset
< BSM_SRAM_LOWER_BOUND
+ len
;
178 reg_offset
+= sizeof(u32
), image
++)
179 _iwl_write_prph(priv
, reg_offset
, le32_to_cpu(*image
));
181 ret
= iwl4965_verify_bsm(priv
);
183 iwl_release_nic_access(priv
);
187 /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
188 iwl_write_prph(priv
, BSM_WR_MEM_SRC_REG
, 0x0);
189 iwl_write_prph(priv
, BSM_WR_MEM_DST_REG
, IWL49_RTC_INST_LOWER_BOUND
);
190 iwl_write_prph(priv
, BSM_WR_DWCOUNT_REG
, len
/ sizeof(u32
));
192 /* Load bootstrap code into instruction SRAM now,
193 * to prepare to load "initialize" uCode */
194 iwl_write_prph(priv
, BSM_WR_CTRL_REG
, BSM_WR_CTRL_REG_BIT_START
);
196 /* Wait for load of bootstrap uCode to finish */
197 for (i
= 0; i
< 100; i
++) {
198 done
= iwl_read_prph(priv
, BSM_WR_CTRL_REG
);
199 if (!(done
& BSM_WR_CTRL_REG_BIT_START
))
204 IWL_DEBUG_INFO(priv
, "BSM write complete, poll %d iterations\n", i
);
206 IWL_ERR(priv
, "BSM write did not complete!\n");
210 /* Enable future boot loads whenever power management unit triggers it
211 * (e.g. when powering back up after power-save shutdown) */
212 iwl_write_prph(priv
, BSM_WR_CTRL_REG
, BSM_WR_CTRL_REG_BIT_START_EN
);
214 iwl_release_nic_access(priv
);
220 * iwl4965_set_ucode_ptrs - Set uCode address location
222 * Tell initialization uCode where to find runtime uCode.
224 * BSM registers initially contain pointers to initialization uCode.
225 * We need to replace them to load runtime uCode inst and data,
226 * and to save runtime data when powering down.
228 static int iwl4965_set_ucode_ptrs(struct iwl_priv
*priv
)
235 /* bits 35:4 for 4965 */
236 pinst
= priv
->ucode_code
.p_addr
>> 4;
237 pdata
= priv
->ucode_data_backup
.p_addr
>> 4;
239 spin_lock_irqsave(&priv
->lock
, flags
);
240 ret
= iwl_grab_nic_access(priv
);
242 spin_unlock_irqrestore(&priv
->lock
, flags
);
246 /* Tell bootstrap uCode where to find image to load */
247 iwl_write_prph(priv
, BSM_DRAM_INST_PTR_REG
, pinst
);
248 iwl_write_prph(priv
, BSM_DRAM_DATA_PTR_REG
, pdata
);
249 iwl_write_prph(priv
, BSM_DRAM_DATA_BYTECOUNT_REG
,
250 priv
->ucode_data
.len
);
252 /* Inst byte count must be last to set up, bit 31 signals uCode
253 * that all new ptr/size info is in place */
254 iwl_write_prph(priv
, BSM_DRAM_INST_BYTECOUNT_REG
,
255 priv
->ucode_code
.len
| BSM_DRAM_INST_LOAD
);
256 iwl_release_nic_access(priv
);
258 spin_unlock_irqrestore(&priv
->lock
, flags
);
260 IWL_DEBUG_INFO(priv
, "Runtime uCode pointers are set.\n");
266 * iwl4965_init_alive_start - Called after REPLY_ALIVE notification received
268 * Called after REPLY_ALIVE notification received from "initialize" uCode.
270 * The 4965 "initialize" ALIVE reply contains calibration data for:
271 * Voltage, temperature, and MIMO tx gain correction, now stored in priv
272 * (3945 does not contain this data).
274 * Tell "initialize" uCode to go ahead and load the runtime uCode.
276 static void iwl4965_init_alive_start(struct iwl_priv
*priv
)
278 /* Check alive response for "valid" sign from uCode */
279 if (priv
->card_alive_init
.is_valid
!= UCODE_VALID_OK
) {
280 /* We had an error bringing up the hardware, so take it
281 * all the way back down so we can try again */
282 IWL_DEBUG_INFO(priv
, "Initialize Alive failed.\n");
286 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
287 * This is a paranoid check, because we would not have gotten the
288 * "initialize" alive if code weren't properly loaded. */
289 if (iwl_verify_ucode(priv
)) {
290 /* Runtime instruction load was bad;
291 * take it all the way back down so we can try again */
292 IWL_DEBUG_INFO(priv
, "Bad \"initialize\" uCode load.\n");
296 /* Calculate temperature */
297 priv
->temperature
= iwl4965_hw_get_temperature(priv
);
299 /* Send pointers to protocol/runtime uCode image ... init code will
300 * load and launch runtime uCode, which will send us another "Alive"
302 IWL_DEBUG_INFO(priv
, "Initialization Alive received.\n");
303 if (iwl4965_set_ucode_ptrs(priv
)) {
304 /* Runtime instruction load won't happen;
305 * take it all the way back down so we can try again */
306 IWL_DEBUG_INFO(priv
, "Couldn't set up uCode pointers.\n");
312 queue_work(priv
->workqueue
, &priv
->restart
);
315 static int is_fat_channel(__le32 rxon_flags
)
317 return (rxon_flags
& RXON_FLG_CHANNEL_MODE_PURE_40_MSK
) ||
318 (rxon_flags
& RXON_FLG_CHANNEL_MODE_MIXED_MSK
);
324 static u16
iwl4965_eeprom_calib_version(struct iwl_priv
*priv
)
326 return iwl_eeprom_query16(priv
, EEPROM_4965_CALIB_VERSION_OFFSET
);
330 * Activate/Deactivate Tx DMA/FIFO channels according tx fifos mask
331 * must be called under priv->lock and mac access
333 static void iwl4965_txq_set_sched(struct iwl_priv
*priv
, u32 mask
)
335 iwl_write_prph(priv
, IWL49_SCD_TXFACT
, mask
);
338 static int iwl4965_apm_init(struct iwl_priv
*priv
)
342 iwl_set_bit(priv
, CSR_GIO_CHICKEN_BITS
,
343 CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER
);
345 /* disable L0s without affecting L1 :don't wait for ICH L0s bug W/A) */
346 iwl_set_bit(priv
, CSR_GIO_CHICKEN_BITS
,
347 CSR_GIO_CHICKEN_BITS_REG_BIT_L1A_NO_L0S_RX
);
349 /* set "initialization complete" bit to move adapter
350 * D0U* --> D0A* state */
351 iwl_set_bit(priv
, CSR_GP_CNTRL
, CSR_GP_CNTRL_REG_FLAG_INIT_DONE
);
353 /* wait for clock stabilization */
354 ret
= iwl_poll_direct_bit(priv
, CSR_GP_CNTRL
,
355 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY
, 25000);
357 IWL_DEBUG_INFO(priv
, "Failed to init the card\n");
361 ret
= iwl_grab_nic_access(priv
);
366 iwl_write_prph(priv
, APMG_CLK_CTRL_REG
, APMG_CLK_VAL_DMA_CLK_RQT
|
367 APMG_CLK_VAL_BSM_CLK_RQT
);
371 /* disable L1-Active */
372 iwl_set_bits_prph(priv
, APMG_PCIDEV_STT_REG
,
373 APMG_PCIDEV_STT_VAL_L1_ACT_DIS
);
375 iwl_release_nic_access(priv
);
381 static void iwl4965_nic_config(struct iwl_priv
*priv
)
387 spin_lock_irqsave(&priv
->lock
, flags
);
389 lctl
= iwl_pcie_link_ctl(priv
);
391 /* HW bug W/A - negligible power consumption */
392 /* L1-ASPM is enabled by BIOS */
393 if ((lctl
& PCI_CFG_LINK_CTRL_VAL_L1_EN
) == PCI_CFG_LINK_CTRL_VAL_L1_EN
)
394 /* L1-ASPM enabled: disable L0S */
395 iwl_set_bit(priv
, CSR_GIO_REG
, CSR_GIO_REG_VAL_L0S_ENABLED
);
397 /* L1-ASPM disabled: enable L0S */
398 iwl_clear_bit(priv
, CSR_GIO_REG
, CSR_GIO_REG_VAL_L0S_ENABLED
);
400 radio_cfg
= iwl_eeprom_query16(priv
, EEPROM_RADIO_CONFIG
);
402 /* write radio config values to register */
403 if (EEPROM_RF_CFG_TYPE_MSK(radio_cfg
) == EEPROM_4965_RF_CFG_TYPE_MAX
)
404 iwl_set_bit(priv
, CSR_HW_IF_CONFIG_REG
,
405 EEPROM_RF_CFG_TYPE_MSK(radio_cfg
) |
406 EEPROM_RF_CFG_STEP_MSK(radio_cfg
) |
407 EEPROM_RF_CFG_DASH_MSK(radio_cfg
));
409 /* set CSR_HW_CONFIG_REG for uCode use */
410 iwl_set_bit(priv
, CSR_HW_IF_CONFIG_REG
,
411 CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI
|
412 CSR_HW_IF_CONFIG_REG_BIT_MAC_SI
);
414 priv
->calib_info
= (struct iwl_eeprom_calib_info
*)
415 iwl_eeprom_query_addr(priv
, EEPROM_4965_CALIB_TXPOWER_OFFSET
);
417 spin_unlock_irqrestore(&priv
->lock
, flags
);
420 static int iwl4965_apm_stop_master(struct iwl_priv
*priv
)
424 spin_lock_irqsave(&priv
->lock
, flags
);
426 /* set stop master bit */
427 iwl_set_bit(priv
, CSR_RESET
, CSR_RESET_REG_FLAG_STOP_MASTER
);
429 iwl_poll_direct_bit(priv
, CSR_RESET
,
430 CSR_RESET_REG_FLAG_MASTER_DISABLED
, 100);
432 spin_unlock_irqrestore(&priv
->lock
, flags
);
433 IWL_DEBUG_INFO(priv
, "stop master\n");
438 static void iwl4965_apm_stop(struct iwl_priv
*priv
)
442 iwl4965_apm_stop_master(priv
);
444 spin_lock_irqsave(&priv
->lock
, flags
);
446 iwl_set_bit(priv
, CSR_RESET
, CSR_RESET_REG_FLAG_SW_RESET
);
449 /* clear "init complete" move adapter D0A* --> D0U state */
450 iwl_clear_bit(priv
, CSR_GP_CNTRL
, CSR_GP_CNTRL_REG_FLAG_INIT_DONE
);
451 spin_unlock_irqrestore(&priv
->lock
, flags
);
454 static int iwl4965_apm_reset(struct iwl_priv
*priv
)
459 iwl4965_apm_stop_master(priv
);
461 spin_lock_irqsave(&priv
->lock
, flags
);
463 iwl_set_bit(priv
, CSR_RESET
, CSR_RESET_REG_FLAG_SW_RESET
);
467 /* FIXME: put here L1A -L0S w/a */
469 iwl_set_bit(priv
, CSR_GP_CNTRL
, CSR_GP_CNTRL_REG_FLAG_INIT_DONE
);
471 ret
= iwl_poll_direct_bit(priv
, CSR_GP_CNTRL
,
472 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY
, 25000);
478 ret
= iwl_grab_nic_access(priv
);
481 /* Enable DMA and BSM Clock */
482 iwl_write_prph(priv
, APMG_CLK_EN_REG
, APMG_CLK_VAL_DMA_CLK_RQT
|
483 APMG_CLK_VAL_BSM_CLK_RQT
);
488 iwl_set_bits_prph(priv
, APMG_PCIDEV_STT_REG
,
489 APMG_PCIDEV_STT_VAL_L1_ACT_DIS
);
491 iwl_release_nic_access(priv
);
493 clear_bit(STATUS_HCMD_ACTIVE
, &priv
->status
);
494 wake_up_interruptible(&priv
->wait_command_queue
);
497 spin_unlock_irqrestore(&priv
->lock
, flags
);
502 /* Reset differential Rx gains in NIC to prepare for chain noise calibration.
503 * Called after every association, but this runs only once!
504 * ... once chain noise is calibrated the first time, it's good forever. */
505 static void iwl4965_chain_noise_reset(struct iwl_priv
*priv
)
507 struct iwl_chain_noise_data
*data
= &(priv
->chain_noise_data
);
509 if ((data
->state
== IWL_CHAIN_NOISE_ALIVE
) && iwl_is_associated(priv
)) {
510 struct iwl_calib_diff_gain_cmd cmd
;
512 memset(&cmd
, 0, sizeof(cmd
));
513 cmd
.hdr
.op_code
= IWL_PHY_CALIBRATE_DIFF_GAIN_CMD
;
517 if (iwl_send_cmd_pdu(priv
, REPLY_PHY_CALIBRATION_CMD
,
520 "Could not send REPLY_PHY_CALIBRATION_CMD\n");
521 data
->state
= IWL_CHAIN_NOISE_ACCUMULATE
;
522 IWL_DEBUG_CALIB(priv
, "Run chain_noise_calibrate\n");
526 static void iwl4965_gain_computation(struct iwl_priv
*priv
,
528 u16 min_average_noise_antenna_i
,
529 u32 min_average_noise
)
532 struct iwl_chain_noise_data
*data
= &priv
->chain_noise_data
;
534 data
->delta_gain_code
[min_average_noise_antenna_i
] = 0;
536 for (i
= 0; i
< NUM_RX_CHAINS
; i
++) {
539 if (!(data
->disconn_array
[i
]) &&
540 (data
->delta_gain_code
[i
] ==
541 CHAIN_NOISE_DELTA_GAIN_INIT_VAL
)) {
542 delta_g
= average_noise
[i
] - min_average_noise
;
543 data
->delta_gain_code
[i
] = (u8
)((delta_g
* 10) / 15);
544 data
->delta_gain_code
[i
] =
545 min(data
->delta_gain_code
[i
],
546 (u8
) CHAIN_NOISE_MAX_DELTA_GAIN_CODE
);
548 data
->delta_gain_code
[i
] =
549 (data
->delta_gain_code
[i
] | (1 << 2));
551 data
->delta_gain_code
[i
] = 0;
554 IWL_DEBUG_CALIB(priv
, "delta_gain_codes: a %d b %d c %d\n",
555 data
->delta_gain_code
[0],
556 data
->delta_gain_code
[1],
557 data
->delta_gain_code
[2]);
559 /* Differential gain gets sent to uCode only once */
560 if (!data
->radio_write
) {
561 struct iwl_calib_diff_gain_cmd cmd
;
562 data
->radio_write
= 1;
564 memset(&cmd
, 0, sizeof(cmd
));
565 cmd
.hdr
.op_code
= IWL_PHY_CALIBRATE_DIFF_GAIN_CMD
;
566 cmd
.diff_gain_a
= data
->delta_gain_code
[0];
567 cmd
.diff_gain_b
= data
->delta_gain_code
[1];
568 cmd
.diff_gain_c
= data
->delta_gain_code
[2];
569 ret
= iwl_send_cmd_pdu(priv
, REPLY_PHY_CALIBRATION_CMD
,
572 IWL_DEBUG_CALIB(priv
, "fail sending cmd "
573 "REPLY_PHY_CALIBRATION_CMD \n");
575 /* TODO we might want recalculate
576 * rx_chain in rxon cmd */
578 /* Mark so we run this algo only once! */
579 data
->state
= IWL_CHAIN_NOISE_CALIBRATED
;
581 data
->chain_noise_a
= 0;
582 data
->chain_noise_b
= 0;
583 data
->chain_noise_c
= 0;
584 data
->chain_signal_a
= 0;
585 data
->chain_signal_b
= 0;
586 data
->chain_signal_c
= 0;
587 data
->beacon_count
= 0;
590 static void iwl4965_rts_tx_cmd_flag(struct ieee80211_tx_info
*info
,
593 if (info
->control
.rates
[0].flags
& IEEE80211_TX_RC_USE_RTS_CTS
) {
594 *tx_flags
|= TX_CMD_FLG_RTS_MSK
;
595 *tx_flags
&= ~TX_CMD_FLG_CTS_MSK
;
596 } else if (info
->control
.rates
[0].flags
& IEEE80211_TX_RC_USE_CTS_PROTECT
) {
597 *tx_flags
&= ~TX_CMD_FLG_RTS_MSK
;
598 *tx_flags
|= TX_CMD_FLG_CTS_MSK
;
602 static void iwl4965_bg_txpower_work(struct work_struct
*work
)
604 struct iwl_priv
*priv
= container_of(work
, struct iwl_priv
,
607 /* If a scan happened to start before we got here
608 * then just return; the statistics notification will
609 * kick off another scheduled work to compensate for
610 * any temperature delta we missed here. */
611 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
) ||
612 test_bit(STATUS_SCANNING
, &priv
->status
))
615 mutex_lock(&priv
->mutex
);
617 /* Regardless of if we are associated, we must reconfigure the
618 * TX power since frames can be sent on non-radar channels while
620 iwl4965_send_tx_power(priv
);
622 /* Update last_temperature to keep is_calib_needed from running
623 * when it isn't needed... */
624 priv
->last_temperature
= priv
->temperature
;
626 mutex_unlock(&priv
->mutex
);
630 * Acquire priv->lock before calling this function !
632 static void iwl4965_set_wr_ptrs(struct iwl_priv
*priv
, int txq_id
, u32 index
)
634 iwl_write_direct32(priv
, HBUS_TARG_WRPTR
,
635 (index
& 0xff) | (txq_id
<< 8));
636 iwl_write_prph(priv
, IWL49_SCD_QUEUE_RDPTR(txq_id
), index
);
640 * iwl4965_tx_queue_set_status - (optionally) start Tx/Cmd queue
641 * @tx_fifo_id: Tx DMA/FIFO channel (range 0-7) that the queue will feed
642 * @scd_retry: (1) Indicates queue will be used in aggregation mode
644 * NOTE: Acquire priv->lock before calling this function !
646 static void iwl4965_tx_queue_set_status(struct iwl_priv
*priv
,
647 struct iwl_tx_queue
*txq
,
648 int tx_fifo_id
, int scd_retry
)
650 int txq_id
= txq
->q
.id
;
652 /* Find out whether to activate Tx queue */
653 int active
= test_bit(txq_id
, &priv
->txq_ctx_active_msk
) ? 1 : 0;
655 /* Set up and activate */
656 iwl_write_prph(priv
, IWL49_SCD_QUEUE_STATUS_BITS(txq_id
),
657 (active
<< IWL49_SCD_QUEUE_STTS_REG_POS_ACTIVE
) |
658 (tx_fifo_id
<< IWL49_SCD_QUEUE_STTS_REG_POS_TXF
) |
659 (scd_retry
<< IWL49_SCD_QUEUE_STTS_REG_POS_WSL
) |
660 (scd_retry
<< IWL49_SCD_QUEUE_STTS_REG_POS_SCD_ACK
) |
661 IWL49_SCD_QUEUE_STTS_REG_MSK
);
663 txq
->sched_retry
= scd_retry
;
665 IWL_DEBUG_INFO(priv
, "%s %s Queue %d on AC %d\n",
666 active
? "Activate" : "Deactivate",
667 scd_retry
? "BA" : "AC", txq_id
, tx_fifo_id
);
670 static const u16 default_queue_to_tx_fifo
[] = {
680 static int iwl4965_alive_notify(struct iwl_priv
*priv
)
688 spin_lock_irqsave(&priv
->lock
, flags
);
690 ret
= iwl_grab_nic_access(priv
);
692 spin_unlock_irqrestore(&priv
->lock
, flags
);
696 /* Clear 4965's internal Tx Scheduler data base */
697 priv
->scd_base_addr
= iwl_read_prph(priv
, IWL49_SCD_SRAM_BASE_ADDR
);
698 a
= priv
->scd_base_addr
+ IWL49_SCD_CONTEXT_DATA_OFFSET
;
699 for (; a
< priv
->scd_base_addr
+ IWL49_SCD_TX_STTS_BITMAP_OFFSET
; a
+= 4)
700 iwl_write_targ_mem(priv
, a
, 0);
701 for (; a
< priv
->scd_base_addr
+ IWL49_SCD_TRANSLATE_TBL_OFFSET
; a
+= 4)
702 iwl_write_targ_mem(priv
, a
, 0);
703 for (; a
< sizeof(u16
) * priv
->hw_params
.max_txq_num
; a
+= 4)
704 iwl_write_targ_mem(priv
, a
, 0);
706 /* Tel 4965 where to find Tx byte count tables */
707 iwl_write_prph(priv
, IWL49_SCD_DRAM_BASE_ADDR
,
708 priv
->scd_bc_tbls
.dma
>> 10);
710 /* Enable DMA channel */
711 for (chan
= 0; chan
< FH49_TCSR_CHNL_NUM
; chan
++)
712 iwl_write_direct32(priv
, FH_TCSR_CHNL_TX_CONFIG_REG(chan
),
713 FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE
|
714 FH_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_ENABLE
);
716 /* Update FH chicken bits */
717 reg_val
= iwl_read_direct32(priv
, FH_TX_CHICKEN_BITS_REG
);
718 iwl_write_direct32(priv
, FH_TX_CHICKEN_BITS_REG
,
719 reg_val
| FH_TX_CHICKEN_BITS_SCD_AUTO_RETRY_EN
);
721 /* Disable chain mode for all queues */
722 iwl_write_prph(priv
, IWL49_SCD_QUEUECHAIN_SEL
, 0);
724 /* Initialize each Tx queue (including the command queue) */
725 for (i
= 0; i
< priv
->hw_params
.max_txq_num
; i
++) {
727 /* TFD circular buffer read/write indexes */
728 iwl_write_prph(priv
, IWL49_SCD_QUEUE_RDPTR(i
), 0);
729 iwl_write_direct32(priv
, HBUS_TARG_WRPTR
, 0 | (i
<< 8));
731 /* Max Tx Window size for Scheduler-ACK mode */
732 iwl_write_targ_mem(priv
, priv
->scd_base_addr
+
733 IWL49_SCD_CONTEXT_QUEUE_OFFSET(i
),
735 IWL49_SCD_QUEUE_CTX_REG1_WIN_SIZE_POS
) &
736 IWL49_SCD_QUEUE_CTX_REG1_WIN_SIZE_MSK
);
739 iwl_write_targ_mem(priv
, priv
->scd_base_addr
+
740 IWL49_SCD_CONTEXT_QUEUE_OFFSET(i
) +
743 IWL49_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_POS
) &
744 IWL49_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_MSK
);
747 iwl_write_prph(priv
, IWL49_SCD_INTERRUPT_MASK
,
748 (1 << priv
->hw_params
.max_txq_num
) - 1);
750 /* Activate all Tx DMA/FIFO channels */
751 priv
->cfg
->ops
->lib
->txq_set_sched(priv
, IWL_MASK(0, 6));
753 iwl4965_set_wr_ptrs(priv
, IWL_CMD_QUEUE_NUM
, 0);
755 /* Map each Tx/cmd queue to its corresponding fifo */
756 for (i
= 0; i
< ARRAY_SIZE(default_queue_to_tx_fifo
); i
++) {
757 int ac
= default_queue_to_tx_fifo
[i
];
758 iwl_txq_ctx_activate(priv
, i
);
759 iwl4965_tx_queue_set_status(priv
, &priv
->txq
[i
], ac
, 0);
762 iwl_release_nic_access(priv
);
763 spin_unlock_irqrestore(&priv
->lock
, flags
);
768 static struct iwl_sensitivity_ranges iwl4965_sensitivity
= {
772 .auto_corr_min_ofdm
= 85,
773 .auto_corr_min_ofdm_mrc
= 170,
774 .auto_corr_min_ofdm_x1
= 105,
775 .auto_corr_min_ofdm_mrc_x1
= 220,
777 .auto_corr_max_ofdm
= 120,
778 .auto_corr_max_ofdm_mrc
= 210,
779 .auto_corr_max_ofdm_x1
= 140,
780 .auto_corr_max_ofdm_mrc_x1
= 270,
782 .auto_corr_min_cck
= 125,
783 .auto_corr_max_cck
= 200,
784 .auto_corr_min_cck_mrc
= 200,
785 .auto_corr_max_cck_mrc
= 400,
792 * iwl4965_hw_set_hw_params
794 * Called when initializing driver
796 static int iwl4965_hw_set_hw_params(struct iwl_priv
*priv
)
799 if ((priv
->cfg
->mod_params
->num_of_queues
> IWL49_NUM_QUEUES
) ||
800 (priv
->cfg
->mod_params
->num_of_queues
< IWL_MIN_NUM_QUEUES
)) {
802 "invalid queues_num, should be between %d and %d\n",
803 IWL_MIN_NUM_QUEUES
, IWL49_NUM_QUEUES
);
807 priv
->hw_params
.max_txq_num
= priv
->cfg
->mod_params
->num_of_queues
;
808 priv
->hw_params
.dma_chnl_num
= FH49_TCSR_CHNL_NUM
;
809 priv
->hw_params
.scd_bc_tbls_size
=
810 IWL49_NUM_QUEUES
* sizeof(struct iwl4965_scd_bc_tbl
);
811 priv
->hw_params
.tfd_size
= sizeof(struct iwl_tfd
);
812 priv
->hw_params
.max_stations
= IWL4965_STATION_COUNT
;
813 priv
->hw_params
.bcast_sta_id
= IWL4965_BROADCAST_ID
;
814 priv
->hw_params
.max_data_size
= IWL49_RTC_DATA_SIZE
;
815 priv
->hw_params
.max_inst_size
= IWL49_RTC_INST_SIZE
;
816 priv
->hw_params
.max_bsm_size
= BSM_SRAM_SIZE
;
817 priv
->hw_params
.fat_channel
= BIT(IEEE80211_BAND_5GHZ
);
819 priv
->hw_params
.rx_wrt_ptr_reg
= FH_RSCSR_CHNL0_WPTR
;
821 priv
->hw_params
.tx_chains_num
= 2;
822 priv
->hw_params
.rx_chains_num
= 2;
823 priv
->hw_params
.valid_tx_ant
= ANT_A
| ANT_B
;
824 priv
->hw_params
.valid_rx_ant
= ANT_A
| ANT_B
;
825 priv
->hw_params
.ct_kill_threshold
= CELSIUS_TO_KELVIN(CT_KILL_THRESHOLD
);
827 priv
->hw_params
.sens
= &iwl4965_sensitivity
;
832 static s32
iwl4965_math_div_round(s32 num
, s32 denom
, s32
*res
)
845 *res
= ((num
* 2 + denom
) / (denom
* 2)) * sign
;
851 * iwl4965_get_voltage_compensation - Power supply voltage comp for txpower
853 * Determines power supply voltage compensation for txpower calculations.
854 * Returns number of 1/2-dB steps to subtract from gain table index,
855 * to compensate for difference between power supply voltage during
856 * factory measurements, vs. current power supply voltage.
858 * Voltage indication is higher for lower voltage.
859 * Lower voltage requires more gain (lower gain table index).
861 static s32
iwl4965_get_voltage_compensation(s32 eeprom_voltage
,
866 if ((TX_POWER_IWL_ILLEGAL_VOLTAGE
== eeprom_voltage
) ||
867 (TX_POWER_IWL_ILLEGAL_VOLTAGE
== current_voltage
))
870 iwl4965_math_div_round(current_voltage
- eeprom_voltage
,
871 TX_POWER_IWL_VOLTAGE_CODES_PER_03V
, &comp
);
873 if (current_voltage
> eeprom_voltage
)
875 if ((comp
< -2) || (comp
> 2))
881 static s32
iwl4965_get_tx_atten_grp(u16 channel
)
883 if (channel
>= CALIB_IWL_TX_ATTEN_GR5_FCH
&&
884 channel
<= CALIB_IWL_TX_ATTEN_GR5_LCH
)
885 return CALIB_CH_GROUP_5
;
887 if (channel
>= CALIB_IWL_TX_ATTEN_GR1_FCH
&&
888 channel
<= CALIB_IWL_TX_ATTEN_GR1_LCH
)
889 return CALIB_CH_GROUP_1
;
891 if (channel
>= CALIB_IWL_TX_ATTEN_GR2_FCH
&&
892 channel
<= CALIB_IWL_TX_ATTEN_GR2_LCH
)
893 return CALIB_CH_GROUP_2
;
895 if (channel
>= CALIB_IWL_TX_ATTEN_GR3_FCH
&&
896 channel
<= CALIB_IWL_TX_ATTEN_GR3_LCH
)
897 return CALIB_CH_GROUP_3
;
899 if (channel
>= CALIB_IWL_TX_ATTEN_GR4_FCH
&&
900 channel
<= CALIB_IWL_TX_ATTEN_GR4_LCH
)
901 return CALIB_CH_GROUP_4
;
906 static u32
iwl4965_get_sub_band(const struct iwl_priv
*priv
, u32 channel
)
910 for (b
= 0; b
< EEPROM_TX_POWER_BANDS
; b
++) {
911 if (priv
->calib_info
->band_info
[b
].ch_from
== 0)
914 if ((channel
>= priv
->calib_info
->band_info
[b
].ch_from
)
915 && (channel
<= priv
->calib_info
->band_info
[b
].ch_to
))
922 static s32
iwl4965_interpolate_value(s32 x
, s32 x1
, s32 y1
, s32 x2
, s32 y2
)
929 iwl4965_math_div_round((x2
- x
) * (y1
- y2
), (x2
- x1
), &val
);
935 * iwl4965_interpolate_chan - Interpolate factory measurements for one channel
937 * Interpolates factory measurements from the two sample channels within a
938 * sub-band, to apply to channel of interest. Interpolation is proportional to
939 * differences in channel frequencies, which is proportional to differences
942 static int iwl4965_interpolate_chan(struct iwl_priv
*priv
, u32 channel
,
943 struct iwl_eeprom_calib_ch_info
*chan_info
)
948 const struct iwl_eeprom_calib_measure
*m1
;
949 const struct iwl_eeprom_calib_measure
*m2
;
950 struct iwl_eeprom_calib_measure
*omeas
;
954 s
= iwl4965_get_sub_band(priv
, channel
);
955 if (s
>= EEPROM_TX_POWER_BANDS
) {
956 IWL_ERR(priv
, "Tx Power can not find channel %d\n", channel
);
960 ch_i1
= priv
->calib_info
->band_info
[s
].ch1
.ch_num
;
961 ch_i2
= priv
->calib_info
->band_info
[s
].ch2
.ch_num
;
962 chan_info
->ch_num
= (u8
) channel
;
964 IWL_DEBUG_TXPOWER(priv
, "channel %d subband %d factory cal ch %d & %d\n",
965 channel
, s
, ch_i1
, ch_i2
);
967 for (c
= 0; c
< EEPROM_TX_POWER_TX_CHAINS
; c
++) {
968 for (m
= 0; m
< EEPROM_TX_POWER_MEASUREMENTS
; m
++) {
969 m1
= &(priv
->calib_info
->band_info
[s
].ch1
.
971 m2
= &(priv
->calib_info
->band_info
[s
].ch2
.
973 omeas
= &(chan_info
->measurements
[c
][m
]);
976 (u8
) iwl4965_interpolate_value(channel
, ch_i1
,
981 (u8
) iwl4965_interpolate_value(channel
, ch_i1
,
985 (u8
) iwl4965_interpolate_value(channel
, ch_i1
,
990 (s8
) iwl4965_interpolate_value(channel
, ch_i1
,
994 IWL_DEBUG_TXPOWER(priv
,
995 "chain %d meas %d AP1=%d AP2=%d AP=%d\n", c
, m
,
996 m1
->actual_pow
, m2
->actual_pow
, omeas
->actual_pow
);
997 IWL_DEBUG_TXPOWER(priv
,
998 "chain %d meas %d NI1=%d NI2=%d NI=%d\n", c
, m
,
999 m1
->gain_idx
, m2
->gain_idx
, omeas
->gain_idx
);
1000 IWL_DEBUG_TXPOWER(priv
,
1001 "chain %d meas %d PA1=%d PA2=%d PA=%d\n", c
, m
,
1002 m1
->pa_det
, m2
->pa_det
, omeas
->pa_det
);
1003 IWL_DEBUG_TXPOWER(priv
,
1004 "chain %d meas %d T1=%d T2=%d T=%d\n", c
, m
,
1005 m1
->temperature
, m2
->temperature
,
1006 omeas
->temperature
);
1013 /* bit-rate-dependent table to prevent Tx distortion, in half-dB units,
1014 * for OFDM 6, 12, 18, 24, 36, 48, 54, 60 MBit, and CCK all rates. */
1015 static s32 back_off_table
[] = {
1016 10, 10, 10, 10, 10, 15, 17, 20, /* OFDM SISO 20 MHz */
1017 10, 10, 10, 10, 10, 15, 17, 20, /* OFDM MIMO 20 MHz */
1018 10, 10, 10, 10, 10, 15, 17, 20, /* OFDM SISO 40 MHz */
1019 10, 10, 10, 10, 10, 15, 17, 20, /* OFDM MIMO 40 MHz */
1023 /* Thermal compensation values for txpower for various frequency ranges ...
1024 * ratios from 3:1 to 4.5:1 of degrees (Celsius) per half-dB gain adjust */
1025 static struct iwl4965_txpower_comp_entry
{
1026 s32 degrees_per_05db_a
;
1027 s32 degrees_per_05db_a_denom
;
1028 } tx_power_cmp_tble
[CALIB_CH_GROUP_MAX
] = {
1029 {9, 2}, /* group 0 5.2, ch 34-43 */
1030 {4, 1}, /* group 1 5.2, ch 44-70 */
1031 {4, 1}, /* group 2 5.2, ch 71-124 */
1032 {4, 1}, /* group 3 5.2, ch 125-200 */
1033 {3, 1} /* group 4 2.4, ch all */
1036 static s32
get_min_power_index(s32 rate_power_index
, u32 band
)
1039 if ((rate_power_index
& 7) <= 4)
1040 return MIN_TX_GAIN_INDEX_52GHZ_EXT
;
1042 return MIN_TX_GAIN_INDEX
;
1050 static const struct gain_entry gain_table
[2][108] = {
1051 /* 5.2GHz power gain index table */
1053 {123, 0x3F}, /* highest txpower */
1162 /* 2.4GHz power gain index table */
1164 {110, 0x3f}, /* highest txpower */
1275 static int iwl4965_fill_txpower_tbl(struct iwl_priv
*priv
, u8 band
, u16 channel
,
1276 u8 is_fat
, u8 ctrl_chan_high
,
1277 struct iwl4965_tx_power_db
*tx_power_tbl
)
1279 u8 saturation_power
;
1281 s32 user_target_power
;
1285 s32 current_regulatory
;
1286 s32 txatten_grp
= CALIB_CH_GROUP_MAX
;
1289 const struct iwl_channel_info
*ch_info
= NULL
;
1290 struct iwl_eeprom_calib_ch_info ch_eeprom_info
;
1291 const struct iwl_eeprom_calib_measure
*measurement
;
1294 s32 voltage_compensation
;
1295 s32 degrees_per_05db_num
;
1296 s32 degrees_per_05db_denom
;
1298 s32 temperature_comp
[2];
1299 s32 factory_gain_index
[2];
1300 s32 factory_actual_pwr
[2];
1303 /* tx_power_user_lmt is in dBm, convert to half-dBm (half-dB units
1304 * are used for indexing into txpower table) */
1305 user_target_power
= 2 * priv
->tx_power_user_lmt
;
1307 /* Get current (RXON) channel, band, width */
1308 IWL_DEBUG_TXPOWER(priv
, "chan %d band %d is_fat %d\n", channel
, band
,
1311 ch_info
= iwl_get_channel_info(priv
, priv
->band
, channel
);
1313 if (!is_channel_valid(ch_info
))
1316 /* get txatten group, used to select 1) thermal txpower adjustment
1317 * and 2) mimo txpower balance between Tx chains. */
1318 txatten_grp
= iwl4965_get_tx_atten_grp(channel
);
1319 if (txatten_grp
< 0) {
1320 IWL_ERR(priv
, "Can't find txatten group for channel %d.\n",
1325 IWL_DEBUG_TXPOWER(priv
, "channel %d belongs to txatten group %d\n",
1326 channel
, txatten_grp
);
1335 /* hardware txpower limits ...
1336 * saturation (clipping distortion) txpowers are in half-dBm */
1338 saturation_power
= priv
->calib_info
->saturation_power24
;
1340 saturation_power
= priv
->calib_info
->saturation_power52
;
1342 if (saturation_power
< IWL_TX_POWER_SATURATION_MIN
||
1343 saturation_power
> IWL_TX_POWER_SATURATION_MAX
) {
1345 saturation_power
= IWL_TX_POWER_DEFAULT_SATURATION_24
;
1347 saturation_power
= IWL_TX_POWER_DEFAULT_SATURATION_52
;
1350 /* regulatory txpower limits ... reg_limit values are in half-dBm,
1351 * max_power_avg values are in dBm, convert * 2 */
1353 reg_limit
= ch_info
->fat_max_power_avg
* 2;
1355 reg_limit
= ch_info
->max_power_avg
* 2;
1357 if ((reg_limit
< IWL_TX_POWER_REGULATORY_MIN
) ||
1358 (reg_limit
> IWL_TX_POWER_REGULATORY_MAX
)) {
1360 reg_limit
= IWL_TX_POWER_DEFAULT_REGULATORY_24
;
1362 reg_limit
= IWL_TX_POWER_DEFAULT_REGULATORY_52
;
1365 /* Interpolate txpower calibration values for this channel,
1366 * based on factory calibration tests on spaced channels. */
1367 iwl4965_interpolate_chan(priv
, channel
, &ch_eeprom_info
);
1369 /* calculate tx gain adjustment based on power supply voltage */
1370 voltage
= priv
->calib_info
->voltage
;
1371 init_voltage
= (s32
)le32_to_cpu(priv
->card_alive_init
.voltage
);
1372 voltage_compensation
=
1373 iwl4965_get_voltage_compensation(voltage
, init_voltage
);
1375 IWL_DEBUG_TXPOWER(priv
, "curr volt %d eeprom volt %d volt comp %d\n",
1377 voltage
, voltage_compensation
);
1379 /* get current temperature (Celsius) */
1380 current_temp
= max(priv
->temperature
, IWL_TX_POWER_TEMPERATURE_MIN
);
1381 current_temp
= min(priv
->temperature
, IWL_TX_POWER_TEMPERATURE_MAX
);
1382 current_temp
= KELVIN_TO_CELSIUS(current_temp
);
1384 /* select thermal txpower adjustment params, based on channel group
1385 * (same frequency group used for mimo txatten adjustment) */
1386 degrees_per_05db_num
=
1387 tx_power_cmp_tble
[txatten_grp
].degrees_per_05db_a
;
1388 degrees_per_05db_denom
=
1389 tx_power_cmp_tble
[txatten_grp
].degrees_per_05db_a_denom
;
1391 /* get per-chain txpower values from factory measurements */
1392 for (c
= 0; c
< 2; c
++) {
1393 measurement
= &ch_eeprom_info
.measurements
[c
][1];
1395 /* txgain adjustment (in half-dB steps) based on difference
1396 * between factory and current temperature */
1397 factory_temp
= measurement
->temperature
;
1398 iwl4965_math_div_round((current_temp
- factory_temp
) *
1399 degrees_per_05db_denom
,
1400 degrees_per_05db_num
,
1401 &temperature_comp
[c
]);
1403 factory_gain_index
[c
] = measurement
->gain_idx
;
1404 factory_actual_pwr
[c
] = measurement
->actual_pow
;
1406 IWL_DEBUG_TXPOWER(priv
, "chain = %d\n", c
);
1407 IWL_DEBUG_TXPOWER(priv
, "fctry tmp %d, "
1408 "curr tmp %d, comp %d steps\n",
1409 factory_temp
, current_temp
,
1410 temperature_comp
[c
]);
1412 IWL_DEBUG_TXPOWER(priv
, "fctry idx %d, fctry pwr %d\n",
1413 factory_gain_index
[c
],
1414 factory_actual_pwr
[c
]);
1417 /* for each of 33 bit-rates (including 1 for CCK) */
1418 for (i
= 0; i
< POWER_TABLE_NUM_ENTRIES
; i
++) {
1420 union iwl4965_tx_power_dual_stream tx_power
;
1422 /* for mimo, reduce each chain's txpower by half
1423 * (3dB, 6 steps), so total output power is regulatory
1426 current_regulatory
= reg_limit
-
1427 IWL_TX_POWER_MIMO_REGULATORY_COMPENSATION
;
1430 current_regulatory
= reg_limit
;
1434 /* find txpower limit, either hardware or regulatory */
1435 power_limit
= saturation_power
- back_off_table
[i
];
1436 if (power_limit
> current_regulatory
)
1437 power_limit
= current_regulatory
;
1439 /* reduce user's txpower request if necessary
1440 * for this rate on this channel */
1441 target_power
= user_target_power
;
1442 if (target_power
> power_limit
)
1443 target_power
= power_limit
;
1445 IWL_DEBUG_TXPOWER(priv
, "rate %d sat %d reg %d usr %d tgt %d\n",
1446 i
, saturation_power
- back_off_table
[i
],
1447 current_regulatory
, user_target_power
,
1450 /* for each of 2 Tx chains (radio transmitters) */
1451 for (c
= 0; c
< 2; c
++) {
1456 (s32
)le32_to_cpu(priv
->card_alive_init
.
1457 tx_atten
[txatten_grp
][c
]);
1461 /* calculate index; higher index means lower txpower */
1462 power_index
= (u8
) (factory_gain_index
[c
] -
1464 factory_actual_pwr
[c
]) -
1465 temperature_comp
[c
] -
1466 voltage_compensation
+
1469 /* IWL_DEBUG_TXPOWER(priv, "calculated txpower index %d\n",
1472 if (power_index
< get_min_power_index(i
, band
))
1473 power_index
= get_min_power_index(i
, band
);
1475 /* adjust 5 GHz index to support negative indexes */
1479 /* CCK, rate 32, reduce txpower for CCK */
1480 if (i
== POWER_TABLE_CCK_ENTRY
)
1482 IWL_TX_POWER_CCK_COMPENSATION_C_STEP
;
1484 /* stay within the table! */
1485 if (power_index
> 107) {
1486 IWL_WARN(priv
, "txpower index %d > 107\n",
1490 if (power_index
< 0) {
1491 IWL_WARN(priv
, "txpower index %d < 0\n",
1496 /* fill txpower command for this rate/chain */
1497 tx_power
.s
.radio_tx_gain
[c
] =
1498 gain_table
[band
][power_index
].radio
;
1499 tx_power
.s
.dsp_predis_atten
[c
] =
1500 gain_table
[band
][power_index
].dsp
;
1502 IWL_DEBUG_TXPOWER(priv
, "chain %d mimo %d index %d "
1503 "gain 0x%02x dsp %d\n",
1504 c
, atten_value
, power_index
,
1505 tx_power
.s
.radio_tx_gain
[c
],
1506 tx_power
.s
.dsp_predis_atten
[c
]);
1507 } /* for each chain */
1509 tx_power_tbl
->power_tbl
[i
].dw
= cpu_to_le32(tx_power
.dw
);
1511 } /* for each rate */
1517 * iwl4965_send_tx_power - Configure the TXPOWER level user limit
1519 * Uses the active RXON for channel, band, and characteristics (fat, high)
1520 * The power limit is taken from priv->tx_power_user_lmt.
1522 static int iwl4965_send_tx_power(struct iwl_priv
*priv
)
1524 struct iwl4965_txpowertable_cmd cmd
= { 0 };
1528 u8 ctrl_chan_high
= 0;
1530 if (test_bit(STATUS_SCANNING
, &priv
->status
)) {
1531 /* If this gets hit a lot, switch it to a BUG() and catch
1532 * the stack trace to find out who is calling this during
1534 IWL_WARN(priv
, "TX Power requested while scanning!\n");
1538 band
= priv
->band
== IEEE80211_BAND_2GHZ
;
1540 is_fat
= is_fat_channel(priv
->active_rxon
.flags
);
1543 (priv
->active_rxon
.flags
& RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK
))
1547 cmd
.channel
= priv
->active_rxon
.channel
;
1549 ret
= iwl4965_fill_txpower_tbl(priv
, band
,
1550 le16_to_cpu(priv
->active_rxon
.channel
),
1551 is_fat
, ctrl_chan_high
, &cmd
.tx_power
);
1555 ret
= iwl_send_cmd_pdu(priv
, REPLY_TX_PWR_TABLE_CMD
, sizeof(cmd
), &cmd
);
1561 static int iwl4965_send_rxon_assoc(struct iwl_priv
*priv
)
1564 struct iwl4965_rxon_assoc_cmd rxon_assoc
;
1565 const struct iwl_rxon_cmd
*rxon1
= &priv
->staging_rxon
;
1566 const struct iwl_rxon_cmd
*rxon2
= &priv
->active_rxon
;
1568 if ((rxon1
->flags
== rxon2
->flags
) &&
1569 (rxon1
->filter_flags
== rxon2
->filter_flags
) &&
1570 (rxon1
->cck_basic_rates
== rxon2
->cck_basic_rates
) &&
1571 (rxon1
->ofdm_ht_single_stream_basic_rates
==
1572 rxon2
->ofdm_ht_single_stream_basic_rates
) &&
1573 (rxon1
->ofdm_ht_dual_stream_basic_rates
==
1574 rxon2
->ofdm_ht_dual_stream_basic_rates
) &&
1575 (rxon1
->rx_chain
== rxon2
->rx_chain
) &&
1576 (rxon1
->ofdm_basic_rates
== rxon2
->ofdm_basic_rates
)) {
1577 IWL_DEBUG_INFO(priv
, "Using current RXON_ASSOC. Not resending.\n");
1581 rxon_assoc
.flags
= priv
->staging_rxon
.flags
;
1582 rxon_assoc
.filter_flags
= priv
->staging_rxon
.filter_flags
;
1583 rxon_assoc
.ofdm_basic_rates
= priv
->staging_rxon
.ofdm_basic_rates
;
1584 rxon_assoc
.cck_basic_rates
= priv
->staging_rxon
.cck_basic_rates
;
1585 rxon_assoc
.reserved
= 0;
1586 rxon_assoc
.ofdm_ht_single_stream_basic_rates
=
1587 priv
->staging_rxon
.ofdm_ht_single_stream_basic_rates
;
1588 rxon_assoc
.ofdm_ht_dual_stream_basic_rates
=
1589 priv
->staging_rxon
.ofdm_ht_dual_stream_basic_rates
;
1590 rxon_assoc
.rx_chain_select_flags
= priv
->staging_rxon
.rx_chain
;
1592 ret
= iwl_send_cmd_pdu_async(priv
, REPLY_RXON_ASSOC
,
1593 sizeof(rxon_assoc
), &rxon_assoc
, NULL
);
1600 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
1601 static int iwl4965_hw_channel_switch(struct iwl_priv
*priv
, u16 channel
)
1606 u8 ctrl_chan_high
= 0;
1607 struct iwl4965_channel_switch_cmd cmd
= { 0 };
1608 const struct iwl_channel_info
*ch_info
;
1610 band
= priv
->band
== IEEE80211_BAND_2GHZ
;
1612 ch_info
= iwl_get_channel_info(priv
, priv
->band
, channel
);
1614 is_fat
= is_fat_channel(priv
->staging_rxon
.flags
);
1617 (priv
->active_rxon
.flags
& RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK
))
1621 cmd
.expect_beacon
= 0;
1622 cmd
.channel
= cpu_to_le16(channel
);
1623 cmd
.rxon_flags
= priv
->active_rxon
.flags
;
1624 cmd
.rxon_filter_flags
= priv
->active_rxon
.filter_flags
;
1625 cmd
.switch_time
= cpu_to_le32(priv
->ucode_beacon_time
);
1627 cmd
.expect_beacon
= is_channel_radar(ch_info
);
1629 cmd
.expect_beacon
= 1;
1631 rc
= iwl4965_fill_txpower_tbl(priv
, band
, channel
, is_fat
,
1632 ctrl_chan_high
, &cmd
.tx_power
);
1634 IWL_DEBUG_11H(priv
, "error:%d fill txpower_tbl\n", rc
);
1638 rc
= iwl_send_cmd_pdu(priv
, REPLY_CHANNEL_SWITCH
, sizeof(cmd
), &cmd
);
1644 * iwl4965_txq_update_byte_cnt_tbl - Set up entry in Tx byte-count array
1646 static void iwl4965_txq_update_byte_cnt_tbl(struct iwl_priv
*priv
,
1647 struct iwl_tx_queue
*txq
,
1650 struct iwl4965_scd_bc_tbl
*scd_bc_tbl
= priv
->scd_bc_tbls
.addr
;
1651 int txq_id
= txq
->q
.id
;
1652 int write_ptr
= txq
->q
.write_ptr
;
1653 int len
= byte_cnt
+ IWL_TX_CRC_SIZE
+ IWL_TX_DELIMITER_SIZE
;
1656 WARN_ON(len
> 0xFFF || write_ptr
>= TFD_QUEUE_SIZE_MAX
);
1658 bc_ent
= cpu_to_le16(len
& 0xFFF);
1659 /* Set up byte count within first 256 entries */
1660 scd_bc_tbl
[txq_id
].tfd_offset
[write_ptr
] = bc_ent
;
1662 /* If within first 64 entries, duplicate at end */
1663 if (write_ptr
< TFD_QUEUE_SIZE_BC_DUP
)
1665 tfd_offset
[TFD_QUEUE_SIZE_MAX
+ write_ptr
] = bc_ent
;
1669 * sign_extend - Sign extend a value using specified bit as sign-bit
1671 * Example: sign_extend(9, 3) would return -7 as bit3 of 1001b is 1
1672 * and bit0..2 is 001b which when sign extended to 1111111111111001b is -7.
1674 * @param oper value to sign extend
1675 * @param index 0 based bit index (0<=index<32) to sign bit
1677 static s32
sign_extend(u32 oper
, int index
)
1679 u8 shift
= 31 - index
;
1681 return (s32
)(oper
<< shift
) >> shift
;
1685 * iwl4965_hw_get_temperature - return the calibrated temperature (in Kelvin)
1686 * @statistics: Provides the temperature reading from the uCode
1688 * A return of <0 indicates bogus data in the statistics
1690 static int iwl4965_hw_get_temperature(const struct iwl_priv
*priv
)
1697 if (test_bit(STATUS_TEMPERATURE
, &priv
->status
) &&
1698 (priv
->statistics
.flag
& STATISTICS_REPLY_FLG_FAT_MODE_MSK
)) {
1699 IWL_DEBUG_TEMP(priv
, "Running FAT temperature calibration\n");
1700 R1
= (s32
)le32_to_cpu(priv
->card_alive_init
.therm_r1
[1]);
1701 R2
= (s32
)le32_to_cpu(priv
->card_alive_init
.therm_r2
[1]);
1702 R3
= (s32
)le32_to_cpu(priv
->card_alive_init
.therm_r3
[1]);
1703 R4
= le32_to_cpu(priv
->card_alive_init
.therm_r4
[1]);
1705 IWL_DEBUG_TEMP(priv
, "Running temperature calibration\n");
1706 R1
= (s32
)le32_to_cpu(priv
->card_alive_init
.therm_r1
[0]);
1707 R2
= (s32
)le32_to_cpu(priv
->card_alive_init
.therm_r2
[0]);
1708 R3
= (s32
)le32_to_cpu(priv
->card_alive_init
.therm_r3
[0]);
1709 R4
= le32_to_cpu(priv
->card_alive_init
.therm_r4
[0]);
1713 * Temperature is only 23 bits, so sign extend out to 32.
1715 * NOTE If we haven't received a statistics notification yet
1716 * with an updated temperature, use R4 provided to us in the
1717 * "initialize" ALIVE response.
1719 if (!test_bit(STATUS_TEMPERATURE
, &priv
->status
))
1720 vt
= sign_extend(R4
, 23);
1723 le32_to_cpu(priv
->statistics
.general
.temperature
), 23);
1725 IWL_DEBUG_TEMP(priv
, "Calib values R[1-3]: %d %d %d R4: %d\n", R1
, R2
, R3
, vt
);
1728 IWL_ERR(priv
, "Calibration conflict R1 == R3\n");
1732 /* Calculate temperature in degrees Kelvin, adjust by 97%.
1733 * Add offset to center the adjustment around 0 degrees Centigrade. */
1734 temperature
= TEMPERATURE_CALIB_A_VAL
* (vt
- R2
);
1735 temperature
/= (R3
- R1
);
1736 temperature
= (temperature
* 97) / 100 + TEMPERATURE_CALIB_KELVIN_OFFSET
;
1738 IWL_DEBUG_TEMP(priv
, "Calibrated temperature: %dK, %dC\n",
1739 temperature
, KELVIN_TO_CELSIUS(temperature
));
1744 /* Adjust Txpower only if temperature variance is greater than threshold. */
1745 #define IWL_TEMPERATURE_THRESHOLD 3
1748 * iwl4965_is_temp_calib_needed - determines if new calibration is needed
1750 * If the temperature changed has changed sufficiently, then a recalibration
1753 * Assumes caller will replace priv->last_temperature once calibration
1756 static int iwl4965_is_temp_calib_needed(struct iwl_priv
*priv
)
1760 if (!test_bit(STATUS_STATISTICS
, &priv
->status
)) {
1761 IWL_DEBUG_TEMP(priv
, "Temperature not updated -- no statistics.\n");
1765 temp_diff
= priv
->temperature
- priv
->last_temperature
;
1767 /* get absolute value */
1768 if (temp_diff
< 0) {
1769 IWL_DEBUG_POWER(priv
, "Getting cooler, delta %d, \n", temp_diff
);
1770 temp_diff
= -temp_diff
;
1771 } else if (temp_diff
== 0)
1772 IWL_DEBUG_POWER(priv
, "Same temp, \n");
1774 IWL_DEBUG_POWER(priv
, "Getting warmer, delta %d, \n", temp_diff
);
1776 if (temp_diff
< IWL_TEMPERATURE_THRESHOLD
) {
1777 IWL_DEBUG_POWER(priv
, "Thermal txpower calib not needed\n");
1781 IWL_DEBUG_POWER(priv
, "Thermal txpower calib needed\n");
1786 static void iwl4965_temperature_calib(struct iwl_priv
*priv
)
1790 temp
= iwl4965_hw_get_temperature(priv
);
1794 if (priv
->temperature
!= temp
) {
1795 if (priv
->temperature
)
1796 IWL_DEBUG_TEMP(priv
, "Temperature changed "
1797 "from %dC to %dC\n",
1798 KELVIN_TO_CELSIUS(priv
->temperature
),
1799 KELVIN_TO_CELSIUS(temp
));
1801 IWL_DEBUG_TEMP(priv
, "Temperature "
1802 "initialized to %dC\n",
1803 KELVIN_TO_CELSIUS(temp
));
1806 priv
->temperature
= temp
;
1807 set_bit(STATUS_TEMPERATURE
, &priv
->status
);
1809 if (!priv
->disable_tx_power_cal
&&
1810 unlikely(!test_bit(STATUS_SCANNING
, &priv
->status
)) &&
1811 iwl4965_is_temp_calib_needed(priv
))
1812 queue_work(priv
->workqueue
, &priv
->txpower_work
);
1816 * iwl4965_tx_queue_stop_scheduler - Stop queue, but keep configuration
1818 static void iwl4965_tx_queue_stop_scheduler(struct iwl_priv
*priv
,
1821 /* Simply stop the queue, but don't change any configuration;
1822 * the SCD_ACT_EN bit is the write-enable mask for the ACTIVE bit. */
1823 iwl_write_prph(priv
,
1824 IWL49_SCD_QUEUE_STATUS_BITS(txq_id
),
1825 (0 << IWL49_SCD_QUEUE_STTS_REG_POS_ACTIVE
)|
1826 (1 << IWL49_SCD_QUEUE_STTS_REG_POS_SCD_ACT_EN
));
1830 * txq_id must be greater than IWL49_FIRST_AMPDU_QUEUE
1831 * priv->lock must be held by the caller
1833 static int iwl4965_txq_agg_disable(struct iwl_priv
*priv
, u16 txq_id
,
1834 u16 ssn_idx
, u8 tx_fifo
)
1838 if ((IWL49_FIRST_AMPDU_QUEUE
> txq_id
) ||
1839 (IWL49_FIRST_AMPDU_QUEUE
+ IWL49_NUM_AMPDU_QUEUES
<= txq_id
)) {
1841 "queue number out of range: %d, must be %d to %d\n",
1842 txq_id
, IWL49_FIRST_AMPDU_QUEUE
,
1843 IWL49_FIRST_AMPDU_QUEUE
+ IWL49_NUM_AMPDU_QUEUES
- 1);
1847 ret
= iwl_grab_nic_access(priv
);
1851 iwl4965_tx_queue_stop_scheduler(priv
, txq_id
);
1853 iwl_clear_bits_prph(priv
, IWL49_SCD_QUEUECHAIN_SEL
, (1 << txq_id
));
1855 priv
->txq
[txq_id
].q
.read_ptr
= (ssn_idx
& 0xff);
1856 priv
->txq
[txq_id
].q
.write_ptr
= (ssn_idx
& 0xff);
1857 /* supposes that ssn_idx is valid (!= 0xFFF) */
1858 iwl4965_set_wr_ptrs(priv
, txq_id
, ssn_idx
);
1860 iwl_clear_bits_prph(priv
, IWL49_SCD_INTERRUPT_MASK
, (1 << txq_id
));
1861 iwl_txq_ctx_deactivate(priv
, txq_id
);
1862 iwl4965_tx_queue_set_status(priv
, &priv
->txq
[txq_id
], tx_fifo
, 0);
1864 iwl_release_nic_access(priv
);
1870 * iwl4965_tx_queue_set_q2ratid - Map unique receiver/tid combination to a queue
1872 static int iwl4965_tx_queue_set_q2ratid(struct iwl_priv
*priv
, u16 ra_tid
,
1879 scd_q2ratid
= ra_tid
& IWL_SCD_QUEUE_RA_TID_MAP_RATID_MSK
;
1881 tbl_dw_addr
= priv
->scd_base_addr
+
1882 IWL49_SCD_TRANSLATE_TBL_OFFSET_QUEUE(txq_id
);
1884 tbl_dw
= iwl_read_targ_mem(priv
, tbl_dw_addr
);
1887 tbl_dw
= (scd_q2ratid
<< 16) | (tbl_dw
& 0x0000FFFF);
1889 tbl_dw
= scd_q2ratid
| (tbl_dw
& 0xFFFF0000);
1891 iwl_write_targ_mem(priv
, tbl_dw_addr
, tbl_dw
);
1898 * iwl4965_tx_queue_agg_enable - Set up & enable aggregation for selected queue
1900 * NOTE: txq_id must be greater than IWL49_FIRST_AMPDU_QUEUE,
1901 * i.e. it must be one of the higher queues used for aggregation
1903 static int iwl4965_txq_agg_enable(struct iwl_priv
*priv
, int txq_id
,
1904 int tx_fifo
, int sta_id
, int tid
, u16 ssn_idx
)
1906 unsigned long flags
;
1910 if ((IWL49_FIRST_AMPDU_QUEUE
> txq_id
) ||
1911 (IWL49_FIRST_AMPDU_QUEUE
+ IWL49_NUM_AMPDU_QUEUES
<= txq_id
)) {
1913 "queue number out of range: %d, must be %d to %d\n",
1914 txq_id
, IWL49_FIRST_AMPDU_QUEUE
,
1915 IWL49_FIRST_AMPDU_QUEUE
+ IWL49_NUM_AMPDU_QUEUES
- 1);
1919 ra_tid
= BUILD_RAxTID(sta_id
, tid
);
1921 /* Modify device's station table to Tx this TID */
1922 iwl_sta_tx_modify_enable_tid(priv
, sta_id
, tid
);
1924 spin_lock_irqsave(&priv
->lock
, flags
);
1925 ret
= iwl_grab_nic_access(priv
);
1927 spin_unlock_irqrestore(&priv
->lock
, flags
);
1931 /* Stop this Tx queue before configuring it */
1932 iwl4965_tx_queue_stop_scheduler(priv
, txq_id
);
1934 /* Map receiver-address / traffic-ID to this queue */
1935 iwl4965_tx_queue_set_q2ratid(priv
, ra_tid
, txq_id
);
1937 /* Set this queue as a chain-building queue */
1938 iwl_set_bits_prph(priv
, IWL49_SCD_QUEUECHAIN_SEL
, (1 << txq_id
));
1940 /* Place first TFD at index corresponding to start sequence number.
1941 * Assumes that ssn_idx is valid (!= 0xFFF) */
1942 priv
->txq
[txq_id
].q
.read_ptr
= (ssn_idx
& 0xff);
1943 priv
->txq
[txq_id
].q
.write_ptr
= (ssn_idx
& 0xff);
1944 iwl4965_set_wr_ptrs(priv
, txq_id
, ssn_idx
);
1946 /* Set up Tx window size and frame limit for this queue */
1947 iwl_write_targ_mem(priv
,
1948 priv
->scd_base_addr
+ IWL49_SCD_CONTEXT_QUEUE_OFFSET(txq_id
),
1949 (SCD_WIN_SIZE
<< IWL49_SCD_QUEUE_CTX_REG1_WIN_SIZE_POS
) &
1950 IWL49_SCD_QUEUE_CTX_REG1_WIN_SIZE_MSK
);
1952 iwl_write_targ_mem(priv
, priv
->scd_base_addr
+
1953 IWL49_SCD_CONTEXT_QUEUE_OFFSET(txq_id
) + sizeof(u32
),
1954 (SCD_FRAME_LIMIT
<< IWL49_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_POS
)
1955 & IWL49_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_MSK
);
1957 iwl_set_bits_prph(priv
, IWL49_SCD_INTERRUPT_MASK
, (1 << txq_id
));
1959 /* Set up Status area in SRAM, map to Tx DMA/FIFO, activate the queue */
1960 iwl4965_tx_queue_set_status(priv
, &priv
->txq
[txq_id
], tx_fifo
, 1);
1962 iwl_release_nic_access(priv
);
1963 spin_unlock_irqrestore(&priv
->lock
, flags
);
1969 static u16
iwl4965_get_hcmd_size(u8 cmd_id
, u16 len
)
1973 return (u16
) sizeof(struct iwl4965_rxon_cmd
);
1979 static u16
iwl4965_build_addsta_hcmd(const struct iwl_addsta_cmd
*cmd
, u8
*data
)
1981 struct iwl4965_addsta_cmd
*addsta
= (struct iwl4965_addsta_cmd
*)data
;
1982 addsta
->mode
= cmd
->mode
;
1983 memcpy(&addsta
->sta
, &cmd
->sta
, sizeof(struct sta_id_modify
));
1984 memcpy(&addsta
->key
, &cmd
->key
, sizeof(struct iwl4965_keyinfo
));
1985 addsta
->station_flags
= cmd
->station_flags
;
1986 addsta
->station_flags_msk
= cmd
->station_flags_msk
;
1987 addsta
->tid_disable_tx
= cmd
->tid_disable_tx
;
1988 addsta
->add_immediate_ba_tid
= cmd
->add_immediate_ba_tid
;
1989 addsta
->remove_immediate_ba_tid
= cmd
->remove_immediate_ba_tid
;
1990 addsta
->add_immediate_ba_ssn
= cmd
->add_immediate_ba_ssn
;
1991 addsta
->reserved1
= cpu_to_le16(0);
1992 addsta
->reserved2
= cpu_to_le32(0);
1994 return (u16
)sizeof(struct iwl4965_addsta_cmd
);
1997 static inline u32
iwl4965_get_scd_ssn(struct iwl4965_tx_resp
*tx_resp
)
1999 return le32_to_cpup(&tx_resp
->u
.status
+ tx_resp
->frame_count
) & MAX_SN
;
2003 * iwl4965_tx_status_reply_tx - Handle Tx response for frames in aggregation queue
2005 static int iwl4965_tx_status_reply_tx(struct iwl_priv
*priv
,
2006 struct iwl_ht_agg
*agg
,
2007 struct iwl4965_tx_resp
*tx_resp
,
2008 int txq_id
, u16 start_idx
)
2011 struct agg_tx_status
*frame_status
= tx_resp
->u
.agg_status
;
2012 struct ieee80211_tx_info
*info
= NULL
;
2013 struct ieee80211_hdr
*hdr
= NULL
;
2014 u32 rate_n_flags
= le32_to_cpu(tx_resp
->rate_n_flags
);
2017 if (agg
->wait_for_ba
)
2018 IWL_DEBUG_TX_REPLY(priv
, "got tx response w/o block-ack\n");
2020 agg
->frame_count
= tx_resp
->frame_count
;
2021 agg
->start_idx
= start_idx
;
2022 agg
->rate_n_flags
= rate_n_flags
;
2025 /* num frames attempted by Tx command */
2026 if (agg
->frame_count
== 1) {
2027 /* Only one frame was attempted; no block-ack will arrive */
2028 status
= le16_to_cpu(frame_status
[0].status
);
2031 /* FIXME: code repetition */
2032 IWL_DEBUG_TX_REPLY(priv
, "FrameCnt = %d, StartIdx=%d idx=%d\n",
2033 agg
->frame_count
, agg
->start_idx
, idx
);
2035 info
= IEEE80211_SKB_CB(priv
->txq
[txq_id
].txb
[idx
].skb
[0]);
2036 info
->status
.rates
[0].count
= tx_resp
->failure_frame
+ 1;
2037 info
->flags
&= ~IEEE80211_TX_CTL_AMPDU
;
2038 info
->flags
|= iwl_is_tx_success(status
) ?
2039 IEEE80211_TX_STAT_ACK
: 0;
2040 iwl_hwrate_to_tx_control(priv
, rate_n_flags
, info
);
2041 /* FIXME: code repetition end */
2043 IWL_DEBUG_TX_REPLY(priv
, "1 Frame 0x%x failure :%d\n",
2044 status
& 0xff, tx_resp
->failure_frame
);
2045 IWL_DEBUG_TX_REPLY(priv
, "Rate Info rate_n_flags=%x\n", rate_n_flags
);
2047 agg
->wait_for_ba
= 0;
2049 /* Two or more frames were attempted; expect block-ack */
2051 int start
= agg
->start_idx
;
2053 /* Construct bit-map of pending frames within Tx window */
2054 for (i
= 0; i
< agg
->frame_count
; i
++) {
2056 status
= le16_to_cpu(frame_status
[i
].status
);
2057 seq
= le16_to_cpu(frame_status
[i
].sequence
);
2058 idx
= SEQ_TO_INDEX(seq
);
2059 txq_id
= SEQ_TO_QUEUE(seq
);
2061 if (status
& (AGG_TX_STATE_FEW_BYTES_MSK
|
2062 AGG_TX_STATE_ABORT_MSK
))
2065 IWL_DEBUG_TX_REPLY(priv
, "FrameCnt = %d, txq_id=%d idx=%d\n",
2066 agg
->frame_count
, txq_id
, idx
);
2068 hdr
= iwl_tx_queue_get_hdr(priv
, txq_id
, idx
);
2070 sc
= le16_to_cpu(hdr
->seq_ctrl
);
2071 if (idx
!= (SEQ_TO_SN(sc
) & 0xff)) {
2073 "BUG_ON idx doesn't match seq control"
2074 " idx=%d, seq_idx=%d, seq=%d\n",
2075 idx
, SEQ_TO_SN(sc
), hdr
->seq_ctrl
);
2079 IWL_DEBUG_TX_REPLY(priv
, "AGG Frame i=%d idx %d seq=%d\n",
2080 i
, idx
, SEQ_TO_SN(sc
));
2084 sh
= (start
- idx
) + 0xff;
2085 bitmap
= bitmap
<< sh
;
2088 } else if (sh
< -64)
2089 sh
= 0xff - (start
- idx
);
2093 bitmap
= bitmap
<< sh
;
2096 bitmap
|= 1ULL << sh
;
2097 IWL_DEBUG_TX_REPLY(priv
, "start=%d bitmap=0x%llx\n",
2098 start
, (unsigned long long)bitmap
);
2101 agg
->bitmap
= bitmap
;
2102 agg
->start_idx
= start
;
2103 IWL_DEBUG_TX_REPLY(priv
, "Frames %d start_idx=%d bitmap=0x%llx\n",
2104 agg
->frame_count
, agg
->start_idx
,
2105 (unsigned long long)agg
->bitmap
);
2108 agg
->wait_for_ba
= 1;
2114 * iwl4965_rx_reply_tx - Handle standard (non-aggregation) Tx response
2116 static void iwl4965_rx_reply_tx(struct iwl_priv
*priv
,
2117 struct iwl_rx_mem_buffer
*rxb
)
2119 struct iwl_rx_packet
*pkt
= (struct iwl_rx_packet
*)rxb
->skb
->data
;
2120 u16 sequence
= le16_to_cpu(pkt
->hdr
.sequence
);
2121 int txq_id
= SEQ_TO_QUEUE(sequence
);
2122 int index
= SEQ_TO_INDEX(sequence
);
2123 struct iwl_tx_queue
*txq
= &priv
->txq
[txq_id
];
2124 struct ieee80211_hdr
*hdr
;
2125 struct ieee80211_tx_info
*info
;
2126 struct iwl4965_tx_resp
*tx_resp
= (void *)&pkt
->u
.raw
[0];
2127 u32 status
= le32_to_cpu(tx_resp
->u
.status
);
2128 int tid
= MAX_TID_COUNT
;
2133 if ((index
>= txq
->q
.n_bd
) || (iwl_queue_used(&txq
->q
, index
) == 0)) {
2134 IWL_ERR(priv
, "Read index for DMA queue txq_id (%d) index %d "
2135 "is out of range [0-%d] %d %d\n", txq_id
,
2136 index
, txq
->q
.n_bd
, txq
->q
.write_ptr
,
2141 info
= IEEE80211_SKB_CB(txq
->txb
[txq
->q
.read_ptr
].skb
[0]);
2142 memset(&info
->status
, 0, sizeof(info
->status
));
2144 hdr
= iwl_tx_queue_get_hdr(priv
, txq_id
, index
);
2145 if (ieee80211_is_data_qos(hdr
->frame_control
)) {
2146 qc
= ieee80211_get_qos_ctl(hdr
);
2150 sta_id
= iwl_get_ra_sta_id(priv
, hdr
);
2151 if (txq
->sched_retry
&& unlikely(sta_id
== IWL_INVALID_STATION
)) {
2152 IWL_ERR(priv
, "Station not known\n");
2156 if (txq
->sched_retry
) {
2157 const u32 scd_ssn
= iwl4965_get_scd_ssn(tx_resp
);
2158 struct iwl_ht_agg
*agg
= NULL
;
2162 agg
= &priv
->stations
[sta_id
].tid
[tid
].agg
;
2164 iwl4965_tx_status_reply_tx(priv
, agg
, tx_resp
, txq_id
, index
);
2166 /* check if BAR is needed */
2167 if ((tx_resp
->frame_count
== 1) && !iwl_is_tx_success(status
))
2168 info
->flags
|= IEEE80211_TX_STAT_AMPDU_NO_BACK
;
2170 if (txq
->q
.read_ptr
!= (scd_ssn
& 0xff)) {
2171 index
= iwl_queue_dec_wrap(scd_ssn
& 0xff, txq
->q
.n_bd
);
2172 IWL_DEBUG_TX_REPLY(priv
, "Retry scheduler reclaim scd_ssn "
2173 "%d index %d\n", scd_ssn
, index
);
2174 freed
= iwl_tx_queue_reclaim(priv
, txq_id
, index
);
2175 priv
->stations
[sta_id
].tid
[tid
].tfds_in_queue
-= freed
;
2177 if (priv
->mac80211_registered
&&
2178 (iwl_queue_space(&txq
->q
) > txq
->q
.low_mark
) &&
2179 (agg
->state
!= IWL_EMPTYING_HW_QUEUE_DELBA
)) {
2180 if (agg
->state
== IWL_AGG_OFF
)
2181 iwl_wake_queue(priv
, txq_id
);
2183 iwl_wake_queue(priv
, txq
->swq_id
);
2187 info
->status
.rates
[0].count
= tx_resp
->failure_frame
+ 1;
2188 info
->flags
|= iwl_is_tx_success(status
) ?
2189 IEEE80211_TX_STAT_ACK
: 0;
2190 iwl_hwrate_to_tx_control(priv
,
2191 le32_to_cpu(tx_resp
->rate_n_flags
),
2194 IWL_DEBUG_TX_REPLY(priv
, "TXQ %d status %s (0x%08x) "
2195 "rate_n_flags 0x%x retries %d\n",
2197 iwl_get_tx_fail_reason(status
), status
,
2198 le32_to_cpu(tx_resp
->rate_n_flags
),
2199 tx_resp
->failure_frame
);
2201 freed
= iwl_tx_queue_reclaim(priv
, txq_id
, index
);
2202 if (qc
&& likely(sta_id
!= IWL_INVALID_STATION
))
2203 priv
->stations
[sta_id
].tid
[tid
].tfds_in_queue
-= freed
;
2205 if (priv
->mac80211_registered
&&
2206 (iwl_queue_space(&txq
->q
) > txq
->q
.low_mark
))
2207 iwl_wake_queue(priv
, txq_id
);
2210 if (qc
&& likely(sta_id
!= IWL_INVALID_STATION
))
2211 iwl_txq_check_empty(priv
, sta_id
, tid
, txq_id
);
2213 if (iwl_check_bits(status
, TX_ABORT_REQUIRED_MSK
))
2214 IWL_ERR(priv
, "TODO: Implement Tx ABORT REQUIRED!!!\n");
2217 static int iwl4965_calc_rssi(struct iwl_priv
*priv
,
2218 struct iwl_rx_phy_res
*rx_resp
)
2220 /* data from PHY/DSP regarding signal strength, etc.,
2221 * contents are always there, not configurable by host. */
2222 struct iwl4965_rx_non_cfg_phy
*ncphy
=
2223 (struct iwl4965_rx_non_cfg_phy
*)rx_resp
->non_cfg_phy_buf
;
2224 u32 agc
= (le16_to_cpu(ncphy
->agc_info
) & IWL49_AGC_DB_MASK
)
2225 >> IWL49_AGC_DB_POS
;
2227 u32 valid_antennae
=
2228 (le16_to_cpu(rx_resp
->phy_flags
) & IWL49_RX_PHY_FLAGS_ANTENNAE_MASK
)
2229 >> IWL49_RX_PHY_FLAGS_ANTENNAE_OFFSET
;
2233 /* Find max rssi among 3 possible receivers.
2234 * These values are measured by the digital signal processor (DSP).
2235 * They should stay fairly constant even as the signal strength varies,
2236 * if the radio's automatic gain control (AGC) is working right.
2237 * AGC value (see below) will provide the "interesting" info. */
2238 for (i
= 0; i
< 3; i
++)
2239 if (valid_antennae
& (1 << i
))
2240 max_rssi
= max(ncphy
->rssi_info
[i
<< 1], max_rssi
);
2242 IWL_DEBUG_STATS(priv
, "Rssi In A %d B %d C %d Max %d AGC dB %d\n",
2243 ncphy
->rssi_info
[0], ncphy
->rssi_info
[2], ncphy
->rssi_info
[4],
2246 /* dBm = max_rssi dB - agc dB - constant.
2247 * Higher AGC (higher radio gain) means lower signal. */
2248 return max_rssi
- agc
- IWL49_RSSI_OFFSET
;
2252 /* Set up 4965-specific Rx frame reply handlers */
2253 static void iwl4965_rx_handler_setup(struct iwl_priv
*priv
)
2255 /* Legacy Rx frames */
2256 priv
->rx_handlers
[REPLY_RX
] = iwl_rx_reply_rx
;
2258 priv
->rx_handlers
[REPLY_TX
] = iwl4965_rx_reply_tx
;
2261 static void iwl4965_setup_deferred_work(struct iwl_priv
*priv
)
2263 INIT_WORK(&priv
->txpower_work
, iwl4965_bg_txpower_work
);
2266 static void iwl4965_cancel_deferred_work(struct iwl_priv
*priv
)
2268 cancel_work_sync(&priv
->txpower_work
);
2272 static struct iwl_hcmd_ops iwl4965_hcmd
= {
2273 .rxon_assoc
= iwl4965_send_rxon_assoc
,
2276 static struct iwl_hcmd_utils_ops iwl4965_hcmd_utils
= {
2277 .get_hcmd_size
= iwl4965_get_hcmd_size
,
2278 .build_addsta_hcmd
= iwl4965_build_addsta_hcmd
,
2279 .chain_noise_reset
= iwl4965_chain_noise_reset
,
2280 .gain_computation
= iwl4965_gain_computation
,
2281 .rts_tx_cmd_flag
= iwl4965_rts_tx_cmd_flag
,
2282 .calc_rssi
= iwl4965_calc_rssi
,
2285 static struct iwl_lib_ops iwl4965_lib
= {
2286 .set_hw_params
= iwl4965_hw_set_hw_params
,
2287 .txq_update_byte_cnt_tbl
= iwl4965_txq_update_byte_cnt_tbl
,
2288 .txq_set_sched
= iwl4965_txq_set_sched
,
2289 .txq_agg_enable
= iwl4965_txq_agg_enable
,
2290 .txq_agg_disable
= iwl4965_txq_agg_disable
,
2291 .txq_attach_buf_to_tfd
= iwl_hw_txq_attach_buf_to_tfd
,
2292 .txq_free_tfd
= iwl_hw_txq_free_tfd
,
2293 .txq_init
= iwl_hw_tx_queue_init
,
2294 .rx_handler_setup
= iwl4965_rx_handler_setup
,
2295 .setup_deferred_work
= iwl4965_setup_deferred_work
,
2296 .cancel_deferred_work
= iwl4965_cancel_deferred_work
,
2297 .is_valid_rtc_data_addr
= iwl4965_hw_valid_rtc_data_addr
,
2298 .alive_notify
= iwl4965_alive_notify
,
2299 .init_alive_start
= iwl4965_init_alive_start
,
2300 .load_ucode
= iwl4965_load_bsm
,
2302 .init
= iwl4965_apm_init
,
2303 .reset
= iwl4965_apm_reset
,
2304 .stop
= iwl4965_apm_stop
,
2305 .config
= iwl4965_nic_config
,
2306 .set_pwr_src
= iwl_set_pwr_src
,
2309 .regulatory_bands
= {
2310 EEPROM_REGULATORY_BAND_1_CHANNELS
,
2311 EEPROM_REGULATORY_BAND_2_CHANNELS
,
2312 EEPROM_REGULATORY_BAND_3_CHANNELS
,
2313 EEPROM_REGULATORY_BAND_4_CHANNELS
,
2314 EEPROM_REGULATORY_BAND_5_CHANNELS
,
2315 EEPROM_4965_REGULATORY_BAND_24_FAT_CHANNELS
,
2316 EEPROM_4965_REGULATORY_BAND_52_FAT_CHANNELS
2318 .verify_signature
= iwlcore_eeprom_verify_signature
,
2319 .acquire_semaphore
= iwlcore_eeprom_acquire_semaphore
,
2320 .release_semaphore
= iwlcore_eeprom_release_semaphore
,
2321 .calib_version
= iwl4965_eeprom_calib_version
,
2322 .query_addr
= iwlcore_eeprom_query_addr
,
2324 .send_tx_power
= iwl4965_send_tx_power
,
2325 .update_chain_flags
= iwl_update_chain_flags
,
2326 .temperature
= iwl4965_temperature_calib
,
2329 static struct iwl_ops iwl4965_ops
= {
2330 .lib
= &iwl4965_lib
,
2331 .hcmd
= &iwl4965_hcmd
,
2332 .utils
= &iwl4965_hcmd_utils
,
2335 struct iwl_cfg iwl4965_agn_cfg
= {
2337 .fw_name_pre
= IWL4965_FW_PRE
,
2338 .ucode_api_max
= IWL4965_UCODE_API_MAX
,
2339 .ucode_api_min
= IWL4965_UCODE_API_MIN
,
2340 .sku
= IWL_SKU_A
|IWL_SKU_G
|IWL_SKU_N
,
2341 .eeprom_size
= IWL4965_EEPROM_IMG_SIZE
,
2342 .eeprom_ver
= EEPROM_4965_EEPROM_VERSION
,
2343 .eeprom_calib_ver
= EEPROM_4965_TX_POWER_VERSION
,
2344 .ops
= &iwl4965_ops
,
2345 .mod_params
= &iwl4965_mod_params
,
2348 /* Module firmware */
2349 MODULE_FIRMWARE(IWL4965_MODULE_FIRMWARE(IWL4965_UCODE_API_MAX
));
2351 module_param_named(antenna
, iwl4965_mod_params
.antenna
, int, 0444);
2352 MODULE_PARM_DESC(antenna
, "select antenna (1=Main, 2=Aux, default 0 [both])");
2353 module_param_named(disable
, iwl4965_mod_params
.disable
, int, 0444);
2354 MODULE_PARM_DESC(disable
, "manually disable the radio (default 0 [radio on])");
2355 module_param_named(swcrypto
, iwl4965_mod_params
.sw_crypto
, int, 0444);
2356 MODULE_PARM_DESC(swcrypto
, "using crypto in software (default 0 [hardware])");
2357 module_param_named(debug
, iwl4965_mod_params
.debug
, uint
, 0444);
2358 MODULE_PARM_DESC(debug
, "debug output mask");
2360 disable_hw_scan
, iwl4965_mod_params
.disable_hw_scan
, int, 0444);
2361 MODULE_PARM_DESC(disable_hw_scan
, "disable hardware scanning (default 0)");
2363 module_param_named(queues_num
, iwl4965_mod_params
.num_of_queues
, int, 0444);
2364 MODULE_PARM_DESC(queues_num
, "number of hw queues.");
2366 module_param_named(11n_disable
, iwl4965_mod_params
.disable_11n
, int, 0444);
2367 MODULE_PARM_DESC(11n_disable
, "disable 11n functionality");
2368 module_param_named(amsdu_size_8K
, iwl4965_mod_params
.amsdu_size_8K
, int, 0444);
2369 MODULE_PARM_DESC(amsdu_size_8K
, "enable 8K amsdu size");
2371 module_param_named(fw_restart4965
, iwl4965_mod_params
.restart_fw
, int, 0444);
2372 MODULE_PARM_DESC(fw_restart4965
, "restart firmware in case of error");