1 /******************************************************************************
3 * Copyright(c) 2003 - 2007 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 * James P. Ketrenos <ipw2100-admin@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/version.h>
30 #include <linux/init.h>
31 #include <linux/pci.h>
32 #include <linux/dma-mapping.h>
33 #include <linux/delay.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>
44 #include "iwl-helpers.h"
46 #define IWL_DECLARE_RATE_INFO(r, s, ip, in, rp, rn, pp, np) \
47 [IWL_RATE_##r##M_INDEX] = { IWL_RATE_##r##M_PLCP, \
48 IWL_RATE_SISO_##s##M_PLCP, \
49 IWL_RATE_MIMO_##s##M_PLCP, \
50 IWL_RATE_##r##M_IEEE, \
51 IWL_RATE_##ip##M_INDEX, \
52 IWL_RATE_##in##M_INDEX, \
53 IWL_RATE_##rp##M_INDEX, \
54 IWL_RATE_##rn##M_INDEX, \
55 IWL_RATE_##pp##M_INDEX, \
56 IWL_RATE_##np##M_INDEX }
60 * rate, ht rate, prev rate, next rate, prev tgg rate, next tgg rate
62 * If there isn't a valid next or previous rate then INV is used which
63 * maps to IWL_RATE_INVALID
66 const struct iwl_rate_info iwl_rates
[IWL_RATE_COUNT
] = {
67 IWL_DECLARE_RATE_INFO(1, INV
, INV
, 2, INV
, 2, INV
, 2), /* 1mbps */
68 IWL_DECLARE_RATE_INFO(2, INV
, 1, 5, 1, 5, 1, 5), /* 2mbps */
69 IWL_DECLARE_RATE_INFO(5, INV
, 2, 6, 2, 11, 2, 11), /*5.5mbps */
70 IWL_DECLARE_RATE_INFO(11, INV
, 9, 12, 9, 12, 5, 18), /* 11mbps */
71 IWL_DECLARE_RATE_INFO(6, 6, 5, 9, 5, 11, 5, 11), /* 6mbps */
72 IWL_DECLARE_RATE_INFO(9, 6, 6, 11, 6, 11, 5, 11), /* 9mbps */
73 IWL_DECLARE_RATE_INFO(12, 12, 11, 18, 11, 18, 11, 18), /* 12mbps */
74 IWL_DECLARE_RATE_INFO(18, 18, 12, 24, 12, 24, 11, 24), /* 18mbps */
75 IWL_DECLARE_RATE_INFO(24, 24, 18, 36, 18, 36, 18, 36), /* 24mbps */
76 IWL_DECLARE_RATE_INFO(36, 36, 24, 48, 24, 48, 24, 48), /* 36mbps */
77 IWL_DECLARE_RATE_INFO(48, 48, 36, 54, 36, 54, 36, 54), /* 48mbps */
78 IWL_DECLARE_RATE_INFO(54, 54, 48, INV
, 48, INV
, 48, INV
),/* 54mbps */
79 IWL_DECLARE_RATE_INFO(60, 60, 48, INV
, 48, INV
, 48, INV
),/* 60mbps */
82 static int is_fat_channel(__le32 rxon_flags
)
84 return (rxon_flags
& RXON_FLG_CHANNEL_MODE_PURE_40_MSK
) ||
85 (rxon_flags
& RXON_FLG_CHANNEL_MODE_MIXED_MSK
);
88 static u8
is_single_stream(struct iwl_priv
*priv
)
90 #ifdef CONFIG_IWLWIFI_HT
91 if (!priv
->is_ht_enabled
|| !priv
->current_assoc_ht
.is_ht
||
92 (priv
->active_rate_ht
[1] == 0) ||
93 (priv
->ps_mode
== IWL_MIMO_PS_STATIC
))
97 #endif /*CONFIG_IWLWIFI_HT */
102 * Determine how many receiver/antenna chains to use.
103 * More provides better reception via diversity. Fewer saves power.
104 * MIMO (dual stream) requires at least 2, but works better with 3.
105 * This does not determine *which* chains to use, just how many.
107 static int iwl4965_get_rx_chain_counter(struct iwl_priv
*priv
,
108 u8
*idle_state
, u8
*rx_state
)
110 u8 is_single
= is_single_stream(priv
);
111 u8 is_cam
= test_bit(STATUS_POWER_PMI
, &priv
->status
) ? 0 : 1;
113 /* # of Rx chains to use when expecting MIMO. */
114 if (is_single
|| (!is_cam
&& (priv
->ps_mode
== IWL_MIMO_PS_STATIC
)))
119 /* # Rx chains when idling and maybe trying to save power */
120 switch (priv
->ps_mode
) {
121 case IWL_MIMO_PS_STATIC
:
122 case IWL_MIMO_PS_DYNAMIC
:
123 *idle_state
= (is_cam
) ? 2 : 1;
125 case IWL_MIMO_PS_NONE
:
126 *idle_state
= (is_cam
) ? *rx_state
: 1;
136 int iwl_hw_rxq_stop(struct iwl_priv
*priv
)
141 spin_lock_irqsave(&priv
->lock
, flags
);
142 rc
= iwl_grab_restricted_access(priv
);
144 spin_unlock_irqrestore(&priv
->lock
, flags
);
149 iwl_write_restricted(priv
, FH_MEM_RCSR_CHNL0_CONFIG_REG
, 0);
150 rc
= iwl_poll_restricted_bit(priv
, FH_MEM_RSSR_RX_STATUS_REG
,
153 IWL_ERROR("Can't stop Rx DMA.\n");
155 iwl_release_restricted_access(priv
);
156 spin_unlock_irqrestore(&priv
->lock
, flags
);
161 u8
iwl_hw_find_station(struct iwl_priv
*priv
, const u8
*addr
)
165 int ret
= IWL_INVALID_STATION
;
167 DECLARE_MAC_BUF(mac
);
169 if ((priv
->iw_mode
== IEEE80211_IF_TYPE_IBSS
) ||
170 (priv
->iw_mode
== IEEE80211_IF_TYPE_AP
))
173 if (is_broadcast_ether_addr(addr
))
174 return IWL4965_BROADCAST_ID
;
176 spin_lock_irqsave(&priv
->sta_lock
, flags
);
177 for (i
= start
; i
< priv
->hw_setting
.max_stations
; i
++)
178 if ((priv
->stations
[i
].used
) &&
180 (priv
->stations
[i
].sta
.sta
.addr
, addr
))) {
185 IWL_DEBUG_ASSOC_LIMIT("can not find STA %s total %d\n",
186 print_mac(mac
, addr
), priv
->num_stations
);
189 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
193 static int iwl4965_nic_set_pwr_src(struct iwl_priv
*priv
, int pwr_max
)
198 spin_lock_irqsave(&priv
->lock
, flags
);
199 rc
= iwl_grab_restricted_access(priv
);
201 spin_unlock_irqrestore(&priv
->lock
, flags
);
208 rc
= pci_read_config_dword(priv
->pci_dev
, PCI_POWER_SOURCE
,
211 if (val
& PCI_CFG_PMC_PME_FROM_D3COLD_SUPPORT
)
212 iwl_set_bits_mask_restricted_reg(
213 priv
, APMG_PS_CTRL_REG
,
214 APMG_PS_CTRL_VAL_PWR_SRC_VAUX
,
215 ~APMG_PS_CTRL_MSK_PWR_SRC
);
217 iwl_set_bits_mask_restricted_reg(
218 priv
, APMG_PS_CTRL_REG
,
219 APMG_PS_CTRL_VAL_PWR_SRC_VMAIN
,
220 ~APMG_PS_CTRL_MSK_PWR_SRC
);
222 iwl_release_restricted_access(priv
);
223 spin_unlock_irqrestore(&priv
->lock
, flags
);
228 static int iwl4965_rx_init(struct iwl_priv
*priv
, struct iwl_rx_queue
*rxq
)
233 spin_lock_irqsave(&priv
->lock
, flags
);
234 rc
= iwl_grab_restricted_access(priv
);
236 spin_unlock_irqrestore(&priv
->lock
, flags
);
241 iwl_write_restricted(priv
, FH_MEM_RCSR_CHNL0_CONFIG_REG
, 0);
243 iwl_write_restricted(priv
, FH_RSCSR_CHNL0_RBDCB_WPTR_REG
, 0);
244 iwl_write_restricted(priv
, FH_RSCSR_CHNL0_RBDCB_BASE_REG
,
247 iwl_write_restricted(priv
, FH_RSCSR_CHNL0_STTS_WPTR_REG
,
248 (priv
->hw_setting
.shared_phys
+
249 offsetof(struct iwl_shared
, val0
)) >> 4);
251 iwl_write_restricted(priv
, FH_MEM_RCSR_CHNL0_CONFIG_REG
,
252 FH_RCSR_RX_CONFIG_CHNL_EN_ENABLE_VAL
|
253 FH_RCSR_CHNL0_RX_CONFIG_IRQ_DEST_INT_HOST_VAL
|
254 IWL_FH_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_4K
|
256 (RX_QUEUE_SIZE_LOG
<<
257 FH_RCSR_RX_CONFIG_RBDCB_SIZE_BITSHIFT
));
260 * iwl_write32(priv,CSR_INT_COAL_REG,0);
263 iwl_release_restricted_access(priv
);
264 spin_unlock_irqrestore(&priv
->lock
, flags
);
269 static int iwl4965_kw_init(struct iwl_priv
*priv
)
274 spin_lock_irqsave(&priv
->lock
, flags
);
275 rc
= iwl_grab_restricted_access(priv
);
279 iwl_write_restricted(priv
, IWL_FH_KW_MEM_ADDR_REG
,
280 priv
->kw
.dma_addr
>> 4);
281 iwl_release_restricted_access(priv
);
283 spin_unlock_irqrestore(&priv
->lock
, flags
);
287 static int iwl4965_kw_alloc(struct iwl_priv
*priv
)
289 struct pci_dev
*dev
= priv
->pci_dev
;
290 struct iwl_kw
*kw
= &priv
->kw
;
292 kw
->size
= IWL4965_KW_SIZE
; /* TBW need set somewhere else */
293 kw
->v_addr
= pci_alloc_consistent(dev
, kw
->size
, &kw
->dma_addr
);
300 #define CHECK_AND_PRINT(x) ((eeprom_ch->flags & EEPROM_CHANNEL_##x) \
303 int iwl4965_set_fat_chan_info(struct iwl_priv
*priv
, int phymode
, u16 channel
,
304 const struct iwl_eeprom_channel
*eeprom_ch
,
305 u8 fat_extension_channel
)
307 struct iwl_channel_info
*ch_info
;
309 ch_info
= (struct iwl_channel_info
*)
310 iwl_get_channel_info(priv
, phymode
, channel
);
312 if (!is_channel_valid(ch_info
))
315 IWL_DEBUG_INFO("FAT Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x"
316 " %ddBm): Ad-Hoc %ssupported\n",
318 is_channel_a_band(ch_info
) ?
320 CHECK_AND_PRINT(IBSS
),
321 CHECK_AND_PRINT(ACTIVE
),
322 CHECK_AND_PRINT(RADAR
),
323 CHECK_AND_PRINT(WIDE
),
324 CHECK_AND_PRINT(NARROW
),
325 CHECK_AND_PRINT(DFS
),
327 eeprom_ch
->max_power_avg
,
328 ((eeprom_ch
->flags
& EEPROM_CHANNEL_IBSS
)
329 && !(eeprom_ch
->flags
& EEPROM_CHANNEL_RADAR
)) ?
332 ch_info
->fat_eeprom
= *eeprom_ch
;
333 ch_info
->fat_max_power_avg
= eeprom_ch
->max_power_avg
;
334 ch_info
->fat_curr_txpow
= eeprom_ch
->max_power_avg
;
335 ch_info
->fat_min_power
= 0;
336 ch_info
->fat_scan_power
= eeprom_ch
->max_power_avg
;
337 ch_info
->fat_flags
= eeprom_ch
->flags
;
338 ch_info
->fat_extension_channel
= fat_extension_channel
;
343 static void iwl4965_kw_free(struct iwl_priv
*priv
)
345 struct pci_dev
*dev
= priv
->pci_dev
;
346 struct iwl_kw
*kw
= &priv
->kw
;
349 pci_free_consistent(dev
, kw
->size
, kw
->v_addr
, kw
->dma_addr
);
350 memset(kw
, 0, sizeof(*kw
));
355 * iwl4965_txq_ctx_reset - Reset TX queue context
356 * Destroys all DMA structures and initialise them again
361 static int iwl4965_txq_ctx_reset(struct iwl_priv
*priv
)
364 int txq_id
, slots_num
;
367 iwl4965_kw_free(priv
);
369 iwl_hw_txq_ctx_free(priv
);
372 rc
= iwl4965_kw_alloc(priv
);
374 IWL_ERROR("Keep Warm allocation failed");
378 spin_lock_irqsave(&priv
->lock
, flags
);
380 rc
= iwl_grab_restricted_access(priv
);
382 IWL_ERROR("TX reset failed");
383 spin_unlock_irqrestore(&priv
->lock
, flags
);
387 iwl_write_restricted_reg(priv
, SCD_TXFACT
, 0);
388 iwl_release_restricted_access(priv
);
389 spin_unlock_irqrestore(&priv
->lock
, flags
);
391 rc
= iwl4965_kw_init(priv
);
393 IWL_ERROR("kw_init failed\n");
398 for (txq_id
= 0; txq_id
< priv
->hw_setting
.max_txq_num
; txq_id
++) {
399 slots_num
= (txq_id
== IWL_CMD_QUEUE_NUM
) ?
400 TFD_CMD_SLOTS
: TFD_TX_CMD_SLOTS
;
401 rc
= iwl_tx_queue_init(priv
, &priv
->txq
[txq_id
], slots_num
,
404 IWL_ERROR("Tx %d queue init failed\n", txq_id
);
412 iwl_hw_txq_ctx_free(priv
);
414 iwl4965_kw_free(priv
);
419 int iwl_hw_nic_init(struct iwl_priv
*priv
)
423 struct iwl_rx_queue
*rxq
= &priv
->rxq
;
428 iwl_power_init_handle(priv
);
431 spin_lock_irqsave(&priv
->lock
, flags
);
433 iwl_set_bit(priv
, CSR_GIO_CHICKEN_BITS
,
434 CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER
);
436 iwl_set_bit(priv
, CSR_GP_CNTRL
, CSR_GP_CNTRL_REG_FLAG_INIT_DONE
);
437 rc
= iwl_poll_bit(priv
, CSR_GP_CNTRL
,
438 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY
,
439 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY
, 25000);
441 spin_unlock_irqrestore(&priv
->lock
, flags
);
442 IWL_DEBUG_INFO("Failed to init the card\n");
446 rc
= iwl_grab_restricted_access(priv
);
448 spin_unlock_irqrestore(&priv
->lock
, flags
);
452 iwl_read_restricted_reg(priv
, APMG_CLK_CTRL_REG
);
454 iwl_write_restricted_reg(priv
, APMG_CLK_CTRL_REG
,
455 APMG_CLK_VAL_DMA_CLK_RQT
|
456 APMG_CLK_VAL_BSM_CLK_RQT
);
457 iwl_read_restricted_reg(priv
, APMG_CLK_CTRL_REG
);
461 iwl_set_bits_restricted_reg(priv
, APMG_PCIDEV_STT_REG
,
462 APMG_PCIDEV_STT_VAL_L1_ACT_DIS
);
464 iwl_release_restricted_access(priv
);
465 iwl_write32(priv
, CSR_INT_COALESCING
, 512 / 32);
466 spin_unlock_irqrestore(&priv
->lock
, flags
);
468 /* Determine HW type */
469 rc
= pci_read_config_byte(priv
->pci_dev
, PCI_REVISION_ID
, &rev_id
);
473 IWL_DEBUG_INFO("HW Revision ID = 0x%X\n", rev_id
);
475 iwl4965_nic_set_pwr_src(priv
, 1);
476 spin_lock_irqsave(&priv
->lock
, flags
);
478 if ((rev_id
& 0x80) == 0x80 && (rev_id
& 0x7f) < 8) {
479 pci_read_config_dword(priv
->pci_dev
, PCI_REG_WUM8
, &val
);
480 /* Enable No Snoop field */
481 pci_write_config_dword(priv
->pci_dev
, PCI_REG_WUM8
,
485 spin_unlock_irqrestore(&priv
->lock
, flags
);
487 /* Read the EEPROM */
488 rc
= iwl_eeprom_init(priv
);
492 if (priv
->eeprom
.calib_version
< EEPROM_TX_POWER_VERSION_NEW
) {
493 IWL_ERROR("Older EEPROM detected! Aborting.\n");
497 pci_read_config_byte(priv
->pci_dev
, PCI_LINK_CTRL
, &val_link
);
499 /* disable L1 entry -- workaround for pre-B1 */
500 pci_write_config_byte(priv
->pci_dev
, PCI_LINK_CTRL
, val_link
& ~0x02);
502 spin_lock_irqsave(&priv
->lock
, flags
);
504 /* set CSR_HW_CONFIG_REG for uCode use */
506 iwl_set_bit(priv
, CSR_SW_VER
, CSR_HW_IF_CONFIG_REG_BIT_KEDRON_R
|
507 CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI
|
508 CSR_HW_IF_CONFIG_REG_BIT_MAC_SI
);
510 rc
= iwl_grab_restricted_access(priv
);
512 spin_unlock_irqrestore(&priv
->lock
, flags
);
513 IWL_DEBUG_INFO("Failed to init the card\n");
517 iwl_read_restricted_reg(priv
, APMG_PS_CTRL_REG
);
518 iwl_set_bits_restricted_reg(priv
, APMG_PS_CTRL_REG
,
519 APMG_PS_CTRL_VAL_RESET_REQ
);
521 iwl_clear_bits_restricted_reg(priv
, APMG_PS_CTRL_REG
,
522 APMG_PS_CTRL_VAL_RESET_REQ
);
524 iwl_release_restricted_access(priv
);
525 spin_unlock_irqrestore(&priv
->lock
, flags
);
527 iwl_hw_card_show_info(priv
);
531 /* Allocate the RX queue, or reset if it is already allocated */
533 rc
= iwl_rx_queue_alloc(priv
);
535 IWL_ERROR("Unable to initialize Rx queue\n");
539 iwl_rx_queue_reset(priv
, rxq
);
541 iwl_rx_replenish(priv
);
543 iwl4965_rx_init(priv
, rxq
);
545 spin_lock_irqsave(&priv
->lock
, flags
);
547 rxq
->need_update
= 1;
548 iwl_rx_queue_update_write_ptr(priv
, rxq
);
550 spin_unlock_irqrestore(&priv
->lock
, flags
);
551 rc
= iwl4965_txq_ctx_reset(priv
);
555 if (priv
->eeprom
.sku_cap
& EEPROM_SKU_CAP_SW_RF_KILL_ENABLE
)
556 IWL_DEBUG_RF_KILL("SW RF KILL supported in EEPROM.\n");
558 if (priv
->eeprom
.sku_cap
& EEPROM_SKU_CAP_HW_RF_KILL_ENABLE
)
559 IWL_DEBUG_RF_KILL("HW RF KILL supported in EEPROM.\n");
561 set_bit(STATUS_INIT
, &priv
->status
);
566 int iwl_hw_nic_stop_master(struct iwl_priv
*priv
)
572 spin_lock_irqsave(&priv
->lock
, flags
);
574 /* set stop master bit */
575 iwl_set_bit(priv
, CSR_RESET
, CSR_RESET_REG_FLAG_STOP_MASTER
);
577 reg_val
= iwl_read32(priv
, CSR_GP_CNTRL
);
579 if (CSR_GP_CNTRL_REG_FLAG_MAC_POWER_SAVE
==
580 (reg_val
& CSR_GP_CNTRL_REG_MSK_POWER_SAVE_TYPE
))
581 IWL_DEBUG_INFO("Card in power save, master is already "
584 rc
= iwl_poll_bit(priv
, CSR_RESET
,
585 CSR_RESET_REG_FLAG_MASTER_DISABLED
,
586 CSR_RESET_REG_FLAG_MASTER_DISABLED
, 100);
588 spin_unlock_irqrestore(&priv
->lock
, flags
);
593 spin_unlock_irqrestore(&priv
->lock
, flags
);
594 IWL_DEBUG_INFO("stop master\n");
599 void iwl_hw_txq_ctx_stop(struct iwl_priv
*priv
)
605 /* reset TFD queues */
606 for (txq_id
= 0; txq_id
< priv
->hw_setting
.max_txq_num
; txq_id
++) {
607 spin_lock_irqsave(&priv
->lock
, flags
);
608 if (iwl_grab_restricted_access(priv
)) {
609 spin_unlock_irqrestore(&priv
->lock
, flags
);
613 iwl_write_restricted(priv
,
614 IWL_FH_TCSR_CHNL_TX_CONFIG_REG(txq_id
),
616 iwl_poll_restricted_bit(priv
, IWL_FH_TSSR_TX_STATUS_REG
,
617 IWL_FH_TSSR_TX_STATUS_REG_MSK_CHNL_IDLE
619 iwl_release_restricted_access(priv
);
620 spin_unlock_irqrestore(&priv
->lock
, flags
);
623 iwl_hw_txq_ctx_free(priv
);
626 int iwl_hw_nic_reset(struct iwl_priv
*priv
)
631 iwl_hw_nic_stop_master(priv
);
633 spin_lock_irqsave(&priv
->lock
, flags
);
635 iwl_set_bit(priv
, CSR_RESET
, CSR_RESET_REG_FLAG_SW_RESET
);
639 iwl_set_bit(priv
, CSR_GP_CNTRL
, CSR_GP_CNTRL_REG_FLAG_INIT_DONE
);
640 rc
= iwl_poll_bit(priv
, CSR_RESET
,
641 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY
,
642 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY
, 25);
646 rc
= iwl_grab_restricted_access(priv
);
648 iwl_write_restricted_reg(priv
, APMG_CLK_EN_REG
,
649 APMG_CLK_VAL_DMA_CLK_RQT
|
650 APMG_CLK_VAL_BSM_CLK_RQT
);
654 iwl_set_bits_restricted_reg(priv
, APMG_PCIDEV_STT_REG
,
655 APMG_PCIDEV_STT_VAL_L1_ACT_DIS
);
657 iwl_release_restricted_access(priv
);
660 clear_bit(STATUS_HCMD_ACTIVE
, &priv
->status
);
661 wake_up_interruptible(&priv
->wait_command_queue
);
663 spin_unlock_irqrestore(&priv
->lock
, flags
);
669 #define REG_RECALIB_PERIOD (60)
672 * iwl4965_bg_statistics_periodic - Timer callback to queue statistics
674 * This callback is provided in order to queue the statistics_work
675 * in work_queue context (v. softirq)
677 * This timer function is continually reset to execute within
678 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
679 * was received. We need to ensure we receive the statistics in order
680 * to update the temperature used for calibrating the TXPOWER. However,
681 * we can't send the statistics command from softirq context (which
682 * is the context which timers run at) so we have to queue off the
683 * statistics_work to actually send the command to the hardware.
685 static void iwl4965_bg_statistics_periodic(unsigned long data
)
687 struct iwl_priv
*priv
= (struct iwl_priv
*)data
;
689 queue_work(priv
->workqueue
, &priv
->statistics_work
);
693 * iwl4965_bg_statistics_work - Send the statistics request to the hardware.
695 * This is queued by iwl_bg_statistics_periodic.
697 static void iwl4965_bg_statistics_work(struct work_struct
*work
)
699 struct iwl_priv
*priv
= container_of(work
, struct iwl_priv
,
702 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
705 mutex_lock(&priv
->mutex
);
706 iwl_send_statistics_request(priv
);
707 mutex_unlock(&priv
->mutex
);
710 #define CT_LIMIT_CONST 259
711 #define TM_CT_KILL_THRESHOLD 110
713 void iwl4965_rf_kill_ct_config(struct iwl_priv
*priv
)
715 struct iwl_ct_kill_config cmd
;
718 u32 crit_temperature
;
722 spin_lock_irqsave(&priv
->lock
, flags
);
723 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
,
724 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT
);
725 spin_unlock_irqrestore(&priv
->lock
, flags
);
727 if (priv
->statistics
.flag
& STATISTICS_REPLY_FLG_FAT_MODE_MSK
) {
728 R1
= (s32
)le32_to_cpu(priv
->card_alive_init
.therm_r1
[1]);
729 R2
= (s32
)le32_to_cpu(priv
->card_alive_init
.therm_r2
[1]);
730 R3
= (s32
)le32_to_cpu(priv
->card_alive_init
.therm_r3
[1]);
732 R1
= (s32
)le32_to_cpu(priv
->card_alive_init
.therm_r1
[0]);
733 R2
= (s32
)le32_to_cpu(priv
->card_alive_init
.therm_r2
[0]);
734 R3
= (s32
)le32_to_cpu(priv
->card_alive_init
.therm_r3
[0]);
737 temp_th
= CELSIUS_TO_KELVIN(TM_CT_KILL_THRESHOLD
);
739 crit_temperature
= ((temp_th
* (R3
-R1
))/CT_LIMIT_CONST
) + R2
;
740 cmd
.critical_temperature_R
= cpu_to_le32(crit_temperature
);
741 rc
= iwl_send_cmd_pdu(priv
,
742 REPLY_CT_KILL_CONFIG_CMD
, sizeof(cmd
), &cmd
);
744 IWL_ERROR("REPLY_CT_KILL_CONFIG_CMD failed\n");
746 IWL_DEBUG_INFO("REPLY_CT_KILL_CONFIG_CMD succeeded\n");
749 #ifdef CONFIG_IWLWIFI_SENSITIVITY
751 /* "false alarms" are signals that our DSP tries to lock onto,
752 * but then determines that they are either noise, or transmissions
753 * from a distant wireless network (also "noise", really) that get
754 * "stepped on" by stronger transmissions within our own network.
755 * This algorithm attempts to set a sensitivity level that is high
756 * enough to receive all of our own network traffic, but not so
757 * high that our DSP gets too busy trying to lock onto non-network
759 static int iwl4965_sens_energy_cck(struct iwl_priv
*priv
,
762 struct statistics_general_data
*rx_info
)
766 u8 max_silence_rssi
= 0;
768 u8 silence_rssi_a
= 0;
769 u8 silence_rssi_b
= 0;
770 u8 silence_rssi_c
= 0;
773 /* "false_alarms" values below are cross-multiplications to assess the
774 * numbers of false alarms within the measured period of actual Rx
775 * (Rx is off when we're txing), vs the min/max expected false alarms
776 * (some should be expected if rx is sensitive enough) in a
777 * hypothetical listening period of 200 time units (TU), 204.8 msec:
779 * MIN_FA/fixed-time < false_alarms/actual-rx-time < MAX_FA/beacon-time
782 u32 false_alarms
= norm_fa
* 200 * 1024;
783 u32 max_false_alarms
= MAX_FA_CCK
* rx_enable_time
;
784 u32 min_false_alarms
= MIN_FA_CCK
* rx_enable_time
;
785 struct iwl_sensitivity_data
*data
= NULL
;
787 data
= &(priv
->sensitivity_data
);
789 data
->nrg_auto_corr_silence_diff
= 0;
791 /* Find max silence rssi among all 3 receivers.
792 * This is background noise, which may include transmissions from other
793 * networks, measured during silence before our network's beacon */
794 silence_rssi_a
= (u8
)((rx_info
->beacon_silence_rssi_a
&
795 ALL_BAND_FILTER
)>>8);
796 silence_rssi_b
= (u8
)((rx_info
->beacon_silence_rssi_b
&
797 ALL_BAND_FILTER
)>>8);
798 silence_rssi_c
= (u8
)((rx_info
->beacon_silence_rssi_c
&
799 ALL_BAND_FILTER
)>>8);
801 val
= max(silence_rssi_b
, silence_rssi_c
);
802 max_silence_rssi
= max(silence_rssi_a
, (u8
) val
);
804 /* Store silence rssi in 20-beacon history table */
805 data
->nrg_silence_rssi
[data
->nrg_silence_idx
] = max_silence_rssi
;
806 data
->nrg_silence_idx
++;
807 if (data
->nrg_silence_idx
>= NRG_NUM_PREV_STAT_L
)
808 data
->nrg_silence_idx
= 0;
810 /* Find max silence rssi across 20 beacon history */
811 for (i
= 0; i
< NRG_NUM_PREV_STAT_L
; i
++) {
812 val
= data
->nrg_silence_rssi
[i
];
813 silence_ref
= max(silence_ref
, val
);
815 IWL_DEBUG_CALIB("silence a %u, b %u, c %u, 20-bcn max %u\n",
816 silence_rssi_a
, silence_rssi_b
, silence_rssi_c
,
819 /* Find max rx energy (min value!) among all 3 receivers,
820 * measured during beacon frame.
821 * Save it in 10-beacon history table. */
822 i
= data
->nrg_energy_idx
;
823 val
= min(rx_info
->beacon_energy_b
, rx_info
->beacon_energy_c
);
824 data
->nrg_value
[i
] = min(rx_info
->beacon_energy_a
, val
);
826 data
->nrg_energy_idx
++;
827 if (data
->nrg_energy_idx
>= 10)
828 data
->nrg_energy_idx
= 0;
830 /* Find min rx energy (max value) across 10 beacon history.
831 * This is the minimum signal level that we want to receive well.
832 * Add backoff (margin so we don't miss slightly lower energy frames).
833 * This establishes an upper bound (min value) for energy threshold. */
834 max_nrg_cck
= data
->nrg_value
[0];
835 for (i
= 1; i
< 10; i
++)
836 max_nrg_cck
= (u32
) max(max_nrg_cck
, (data
->nrg_value
[i
]));
839 IWL_DEBUG_CALIB("rx energy a %u, b %u, c %u, 10-bcn max/min %u\n",
840 rx_info
->beacon_energy_a
, rx_info
->beacon_energy_b
,
841 rx_info
->beacon_energy_c
, max_nrg_cck
- 6);
843 /* Count number of consecutive beacons with fewer-than-desired
845 if (false_alarms
< min_false_alarms
)
846 data
->num_in_cck_no_fa
++;
848 data
->num_in_cck_no_fa
= 0;
849 IWL_DEBUG_CALIB("consecutive bcns with few false alarms = %u\n",
850 data
->num_in_cck_no_fa
);
852 /* If we got too many false alarms this time, reduce sensitivity */
853 if (false_alarms
> max_false_alarms
) {
854 IWL_DEBUG_CALIB("norm FA %u > max FA %u\n",
855 false_alarms
, max_false_alarms
);
856 IWL_DEBUG_CALIB("... reducing sensitivity\n");
857 data
->nrg_curr_state
= IWL_FA_TOO_MANY
;
859 if (data
->auto_corr_cck
> AUTO_CORR_MAX_TH_CCK
) {
860 /* Store for "fewer than desired" on later beacon */
861 data
->nrg_silence_ref
= silence_ref
;
863 /* increase energy threshold (reduce nrg value)
864 * to decrease sensitivity */
865 if (data
->nrg_th_cck
> (NRG_MAX_CCK
+ NRG_STEP_CCK
))
866 data
->nrg_th_cck
= data
->nrg_th_cck
870 /* increase auto_corr values to decrease sensitivity */
871 if (data
->auto_corr_cck
< AUTO_CORR_MAX_TH_CCK
)
872 data
->auto_corr_cck
= AUTO_CORR_MAX_TH_CCK
+ 1;
874 val
= data
->auto_corr_cck
+ AUTO_CORR_STEP_CCK
;
875 data
->auto_corr_cck
= min((u32
)AUTO_CORR_MAX_CCK
, val
);
877 val
= data
->auto_corr_cck_mrc
+ AUTO_CORR_STEP_CCK
;
878 data
->auto_corr_cck_mrc
= min((u32
)AUTO_CORR_MAX_CCK_MRC
, val
);
880 /* Else if we got fewer than desired, increase sensitivity */
881 } else if (false_alarms
< min_false_alarms
) {
882 data
->nrg_curr_state
= IWL_FA_TOO_FEW
;
884 /* Compare silence level with silence level for most recent
885 * healthy number or too many false alarms */
886 data
->nrg_auto_corr_silence_diff
= (s32
)data
->nrg_silence_ref
-
889 IWL_DEBUG_CALIB("norm FA %u < min FA %u, silence diff %d\n",
890 false_alarms
, min_false_alarms
,
891 data
->nrg_auto_corr_silence_diff
);
893 /* Increase value to increase sensitivity, but only if:
894 * 1a) previous beacon did *not* have *too many* false alarms
895 * 1b) AND there's a significant difference in Rx levels
896 * from a previous beacon with too many, or healthy # FAs
897 * OR 2) We've seen a lot of beacons (100) with too few
899 if ((data
->nrg_prev_state
!= IWL_FA_TOO_MANY
) &&
900 ((data
->nrg_auto_corr_silence_diff
> NRG_DIFF
) ||
901 (data
->num_in_cck_no_fa
> MAX_NUMBER_CCK_NO_FA
))) {
903 IWL_DEBUG_CALIB("... increasing sensitivity\n");
904 /* Increase nrg value to increase sensitivity */
905 val
= data
->nrg_th_cck
+ NRG_STEP_CCK
;
906 data
->nrg_th_cck
= min((u32
)NRG_MIN_CCK
, val
);
908 /* Decrease auto_corr values to increase sensitivity */
909 val
= data
->auto_corr_cck
- AUTO_CORR_STEP_CCK
;
910 data
->auto_corr_cck
= max((u32
)AUTO_CORR_MIN_CCK
, val
);
912 val
= data
->auto_corr_cck_mrc
- AUTO_CORR_STEP_CCK
;
913 data
->auto_corr_cck_mrc
=
914 max((u32
)AUTO_CORR_MIN_CCK_MRC
, val
);
917 IWL_DEBUG_CALIB("... but not changing sensitivity\n");
919 /* Else we got a healthy number of false alarms, keep status quo */
921 IWL_DEBUG_CALIB(" FA in safe zone\n");
922 data
->nrg_curr_state
= IWL_FA_GOOD_RANGE
;
924 /* Store for use in "fewer than desired" with later beacon */
925 data
->nrg_silence_ref
= silence_ref
;
927 /* If previous beacon had too many false alarms,
928 * give it some extra margin by reducing sensitivity again
929 * (but don't go below measured energy of desired Rx) */
930 if (IWL_FA_TOO_MANY
== data
->nrg_prev_state
) {
931 IWL_DEBUG_CALIB("... increasing margin\n");
932 data
->nrg_th_cck
-= NRG_MARGIN
;
936 /* Make sure the energy threshold does not go above the measured
937 * energy of the desired Rx signals (reduced by backoff margin),
938 * or else we might start missing Rx frames.
939 * Lower value is higher energy, so we use max()!
941 data
->nrg_th_cck
= max(max_nrg_cck
, data
->nrg_th_cck
);
942 IWL_DEBUG_CALIB("new nrg_th_cck %u\n", data
->nrg_th_cck
);
944 data
->nrg_prev_state
= data
->nrg_curr_state
;
950 static int iwl4965_sens_auto_corr_ofdm(struct iwl_priv
*priv
,
955 u32 false_alarms
= norm_fa
* 200 * 1024;
956 u32 max_false_alarms
= MAX_FA_OFDM
* rx_enable_time
;
957 u32 min_false_alarms
= MIN_FA_OFDM
* rx_enable_time
;
958 struct iwl_sensitivity_data
*data
= NULL
;
960 data
= &(priv
->sensitivity_data
);
962 /* If we got too many false alarms this time, reduce sensitivity */
963 if (false_alarms
> max_false_alarms
) {
965 IWL_DEBUG_CALIB("norm FA %u > max FA %u)\n",
966 false_alarms
, max_false_alarms
);
968 val
= data
->auto_corr_ofdm
+ AUTO_CORR_STEP_OFDM
;
969 data
->auto_corr_ofdm
=
970 min((u32
)AUTO_CORR_MAX_OFDM
, val
);
972 val
= data
->auto_corr_ofdm_mrc
+ AUTO_CORR_STEP_OFDM
;
973 data
->auto_corr_ofdm_mrc
=
974 min((u32
)AUTO_CORR_MAX_OFDM_MRC
, val
);
976 val
= data
->auto_corr_ofdm_x1
+ AUTO_CORR_STEP_OFDM
;
977 data
->auto_corr_ofdm_x1
=
978 min((u32
)AUTO_CORR_MAX_OFDM_X1
, val
);
980 val
= data
->auto_corr_ofdm_mrc_x1
+ AUTO_CORR_STEP_OFDM
;
981 data
->auto_corr_ofdm_mrc_x1
=
982 min((u32
)AUTO_CORR_MAX_OFDM_MRC_X1
, val
);
985 /* Else if we got fewer than desired, increase sensitivity */
986 else if (false_alarms
< min_false_alarms
) {
988 IWL_DEBUG_CALIB("norm FA %u < min FA %u\n",
989 false_alarms
, min_false_alarms
);
991 val
= data
->auto_corr_ofdm
- AUTO_CORR_STEP_OFDM
;
992 data
->auto_corr_ofdm
=
993 max((u32
)AUTO_CORR_MIN_OFDM
, val
);
995 val
= data
->auto_corr_ofdm_mrc
- AUTO_CORR_STEP_OFDM
;
996 data
->auto_corr_ofdm_mrc
=
997 max((u32
)AUTO_CORR_MIN_OFDM_MRC
, val
);
999 val
= data
->auto_corr_ofdm_x1
- AUTO_CORR_STEP_OFDM
;
1000 data
->auto_corr_ofdm_x1
=
1001 max((u32
)AUTO_CORR_MIN_OFDM_X1
, val
);
1003 val
= data
->auto_corr_ofdm_mrc_x1
- AUTO_CORR_STEP_OFDM
;
1004 data
->auto_corr_ofdm_mrc_x1
=
1005 max((u32
)AUTO_CORR_MIN_OFDM_MRC_X1
, val
);
1009 IWL_DEBUG_CALIB("min FA %u < norm FA %u < max FA %u OK\n",
1010 min_false_alarms
, false_alarms
, max_false_alarms
);
1015 static int iwl_sensitivity_callback(struct iwl_priv
*priv
,
1016 struct iwl_cmd
*cmd
, struct sk_buff
*skb
)
1018 /* We didn't cache the SKB; let the caller free it */
1022 /* Prepare a SENSITIVITY_CMD, send to uCode if values have changed */
1023 static int iwl4965_sensitivity_write(struct iwl_priv
*priv
, u8 flags
)
1026 struct iwl_sensitivity_cmd cmd
;
1027 struct iwl_sensitivity_data
*data
= NULL
;
1028 struct iwl_host_cmd cmd_out
= {
1029 .id
= SENSITIVITY_CMD
,
1030 .len
= sizeof(struct iwl_sensitivity_cmd
),
1031 .meta
.flags
= flags
,
1035 data
= &(priv
->sensitivity_data
);
1037 memset(&cmd
, 0, sizeof(cmd
));
1039 cmd
.table
[HD_AUTO_CORR32_X4_TH_ADD_MIN_INDEX
] =
1040 cpu_to_le16((u16
)data
->auto_corr_ofdm
);
1041 cmd
.table
[HD_AUTO_CORR32_X4_TH_ADD_MIN_MRC_INDEX
] =
1042 cpu_to_le16((u16
)data
->auto_corr_ofdm_mrc
);
1043 cmd
.table
[HD_AUTO_CORR32_X1_TH_ADD_MIN_INDEX
] =
1044 cpu_to_le16((u16
)data
->auto_corr_ofdm_x1
);
1045 cmd
.table
[HD_AUTO_CORR32_X1_TH_ADD_MIN_MRC_INDEX
] =
1046 cpu_to_le16((u16
)data
->auto_corr_ofdm_mrc_x1
);
1048 cmd
.table
[HD_AUTO_CORR40_X4_TH_ADD_MIN_INDEX
] =
1049 cpu_to_le16((u16
)data
->auto_corr_cck
);
1050 cmd
.table
[HD_AUTO_CORR40_X4_TH_ADD_MIN_MRC_INDEX
] =
1051 cpu_to_le16((u16
)data
->auto_corr_cck_mrc
);
1053 cmd
.table
[HD_MIN_ENERGY_CCK_DET_INDEX
] =
1054 cpu_to_le16((u16
)data
->nrg_th_cck
);
1055 cmd
.table
[HD_MIN_ENERGY_OFDM_DET_INDEX
] =
1056 cpu_to_le16((u16
)data
->nrg_th_ofdm
);
1058 cmd
.table
[HD_BARKER_CORR_TH_ADD_MIN_INDEX
] =
1059 __constant_cpu_to_le16(190);
1060 cmd
.table
[HD_BARKER_CORR_TH_ADD_MIN_MRC_INDEX
] =
1061 __constant_cpu_to_le16(390);
1062 cmd
.table
[HD_OFDM_ENERGY_TH_IN_INDEX
] =
1063 __constant_cpu_to_le16(62);
1065 IWL_DEBUG_CALIB("ofdm: ac %u mrc %u x1 %u mrc_x1 %u thresh %u\n",
1066 data
->auto_corr_ofdm
, data
->auto_corr_ofdm_mrc
,
1067 data
->auto_corr_ofdm_x1
, data
->auto_corr_ofdm_mrc_x1
,
1070 IWL_DEBUG_CALIB("cck: ac %u mrc %u thresh %u\n",
1071 data
->auto_corr_cck
, data
->auto_corr_cck_mrc
,
1074 cmd
.control
= SENSITIVITY_CMD_CONTROL_WORK_TABLE
;
1076 if (flags
& CMD_ASYNC
)
1077 cmd_out
.meta
.u
.callback
= iwl_sensitivity_callback
;
1079 /* Don't send command to uCode if nothing has changed */
1080 if (!memcmp(&cmd
.table
[0], &(priv
->sensitivity_tbl
[0]),
1081 sizeof(u16
)*HD_TABLE_SIZE
)) {
1082 IWL_DEBUG_CALIB("No change in SENSITIVITY_CMD\n");
1086 /* Copy table for comparison next time */
1087 memcpy(&(priv
->sensitivity_tbl
[0]), &(cmd
.table
[0]),
1088 sizeof(u16
)*HD_TABLE_SIZE
);
1090 rc
= iwl_send_cmd(priv
, &cmd_out
);
1092 IWL_DEBUG_CALIB("SENSITIVITY_CMD succeeded\n");
1099 void iwl4965_init_sensitivity(struct iwl_priv
*priv
, u8 flags
, u8 force
)
1103 struct iwl_sensitivity_data
*data
= NULL
;
1105 IWL_DEBUG_CALIB("Start iwl4965_init_sensitivity\n");
1108 memset(&(priv
->sensitivity_tbl
[0]), 0,
1109 sizeof(u16
)*HD_TABLE_SIZE
);
1111 /* Clear driver's sensitivity algo data */
1112 data
= &(priv
->sensitivity_data
);
1113 memset(data
, 0, sizeof(struct iwl_sensitivity_data
));
1115 data
->num_in_cck_no_fa
= 0;
1116 data
->nrg_curr_state
= IWL_FA_TOO_MANY
;
1117 data
->nrg_prev_state
= IWL_FA_TOO_MANY
;
1118 data
->nrg_silence_ref
= 0;
1119 data
->nrg_silence_idx
= 0;
1120 data
->nrg_energy_idx
= 0;
1122 for (i
= 0; i
< 10; i
++)
1123 data
->nrg_value
[i
] = 0;
1125 for (i
= 0; i
< NRG_NUM_PREV_STAT_L
; i
++)
1126 data
->nrg_silence_rssi
[i
] = 0;
1128 data
->auto_corr_ofdm
= 90;
1129 data
->auto_corr_ofdm_mrc
= 170;
1130 data
->auto_corr_ofdm_x1
= 105;
1131 data
->auto_corr_ofdm_mrc_x1
= 220;
1132 data
->auto_corr_cck
= AUTO_CORR_CCK_MIN_VAL_DEF
;
1133 data
->auto_corr_cck_mrc
= 200;
1134 data
->nrg_th_cck
= 100;
1135 data
->nrg_th_ofdm
= 100;
1137 data
->last_bad_plcp_cnt_ofdm
= 0;
1138 data
->last_fa_cnt_ofdm
= 0;
1139 data
->last_bad_plcp_cnt_cck
= 0;
1140 data
->last_fa_cnt_cck
= 0;
1142 /* Clear prior Sensitivity command data to force send to uCode */
1144 memset(&(priv
->sensitivity_tbl
[0]), 0,
1145 sizeof(u16
)*HD_TABLE_SIZE
);
1147 rc
|= iwl4965_sensitivity_write(priv
, flags
);
1148 IWL_DEBUG_CALIB("<<return 0x%X\n", rc
);
1154 /* Reset differential Rx gains in NIC to prepare for chain noise calibration.
1155 * Called after every association, but this runs only once!
1156 * ... once chain noise is calibrated the first time, it's good forever. */
1157 void iwl4965_chain_noise_reset(struct iwl_priv
*priv
)
1159 struct iwl_chain_noise_data
*data
= NULL
;
1162 data
= &(priv
->chain_noise_data
);
1163 if ((data
->state
== IWL_CHAIN_NOISE_ALIVE
) && iwl_is_associated(priv
)) {
1164 struct iwl_calibration_cmd cmd
;
1166 memset(&cmd
, 0, sizeof(cmd
));
1167 cmd
.opCode
= PHY_CALIBRATE_DIFF_GAIN_CMD
;
1168 cmd
.diff_gain_a
= 0;
1169 cmd
.diff_gain_b
= 0;
1170 cmd
.diff_gain_c
= 0;
1171 rc
= iwl_send_cmd_pdu(priv
, REPLY_PHY_CALIBRATION_CMD
,
1174 data
->state
= IWL_CHAIN_NOISE_ACCUMULATE
;
1175 IWL_DEBUG_CALIB("Run chain_noise_calibrate\n");
1181 * Accumulate 20 beacons of signal and noise statistics for each of
1182 * 3 receivers/antennas/rx-chains, then figure out:
1183 * 1) Which antennas are connected.
1184 * 2) Differential rx gain settings to balance the 3 receivers.
1186 static void iwl4965_noise_calibration(struct iwl_priv
*priv
,
1187 struct iwl_notif_statistics
*stat_resp
)
1189 struct iwl_chain_noise_data
*data
= NULL
;
1198 u32 average_sig
[NUM_RX_CHAINS
] = {INITIALIZATION_VALUE
};
1199 u32 average_noise
[NUM_RX_CHAINS
] = {INITIALIZATION_VALUE
};
1200 u32 max_average_sig
;
1201 u16 max_average_sig_antenna_i
;
1202 u32 min_average_noise
= MIN_AVERAGE_NOISE_MAX_VALUE
;
1203 u16 min_average_noise_antenna_i
= INITIALIZATION_VALUE
;
1205 u16 chan_num
= INITIALIZATION_VALUE
;
1206 u32 band
= INITIALIZATION_VALUE
;
1207 u32 active_chains
= 0;
1208 unsigned long flags
;
1209 struct statistics_rx_non_phy
*rx_info
= &(stat_resp
->rx
.general
);
1211 data
= &(priv
->chain_noise_data
);
1213 /* Accumulate just the first 20 beacons after the first association,
1214 * then we're done forever. */
1215 if (data
->state
!= IWL_CHAIN_NOISE_ACCUMULATE
) {
1216 if (data
->state
== IWL_CHAIN_NOISE_ALIVE
)
1217 IWL_DEBUG_CALIB("Wait for noise calib reset\n");
1221 spin_lock_irqsave(&priv
->lock
, flags
);
1222 if (rx_info
->interference_data_flag
!= INTERFERENCE_DATA_AVAILABLE
) {
1223 IWL_DEBUG_CALIB(" << Interference data unavailable\n");
1224 spin_unlock_irqrestore(&priv
->lock
, flags
);
1228 band
= (priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
) ? 0 : 1;
1229 chan_num
= le16_to_cpu(priv
->staging_rxon
.channel
);
1231 /* Make sure we accumulate data for just the associated channel
1232 * (even if scanning). */
1233 if ((chan_num
!= (le32_to_cpu(stat_resp
->flag
) >> 16)) ||
1234 ((STATISTICS_REPLY_FLG_BAND_24G_MSK
==
1235 (stat_resp
->flag
& STATISTICS_REPLY_FLG_BAND_24G_MSK
)) && band
)) {
1236 IWL_DEBUG_CALIB("Stats not from chan=%d, band=%d\n",
1238 spin_unlock_irqrestore(&priv
->lock
, flags
);
1242 /* Accumulate beacon statistics values across 20 beacons */
1243 chain_noise_a
= le32_to_cpu(rx_info
->beacon_silence_rssi_a
) &
1245 chain_noise_b
= le32_to_cpu(rx_info
->beacon_silence_rssi_b
) &
1247 chain_noise_c
= le32_to_cpu(rx_info
->beacon_silence_rssi_c
) &
1250 chain_sig_a
= le32_to_cpu(rx_info
->beacon_rssi_a
) & IN_BAND_FILTER
;
1251 chain_sig_b
= le32_to_cpu(rx_info
->beacon_rssi_b
) & IN_BAND_FILTER
;
1252 chain_sig_c
= le32_to_cpu(rx_info
->beacon_rssi_c
) & IN_BAND_FILTER
;
1254 spin_unlock_irqrestore(&priv
->lock
, flags
);
1256 data
->beacon_count
++;
1258 data
->chain_noise_a
= (chain_noise_a
+ data
->chain_noise_a
);
1259 data
->chain_noise_b
= (chain_noise_b
+ data
->chain_noise_b
);
1260 data
->chain_noise_c
= (chain_noise_c
+ data
->chain_noise_c
);
1262 data
->chain_signal_a
= (chain_sig_a
+ data
->chain_signal_a
);
1263 data
->chain_signal_b
= (chain_sig_b
+ data
->chain_signal_b
);
1264 data
->chain_signal_c
= (chain_sig_c
+ data
->chain_signal_c
);
1266 IWL_DEBUG_CALIB("chan=%d, band=%d, beacon=%d\n", chan_num
, band
,
1267 data
->beacon_count
);
1268 IWL_DEBUG_CALIB("chain_sig: a %d b %d c %d\n",
1269 chain_sig_a
, chain_sig_b
, chain_sig_c
);
1270 IWL_DEBUG_CALIB("chain_noise: a %d b %d c %d\n",
1271 chain_noise_a
, chain_noise_b
, chain_noise_c
);
1273 /* If this is the 20th beacon, determine:
1274 * 1) Disconnected antennas (using signal strengths)
1275 * 2) Differential gain (using silence noise) to balance receivers */
1276 if (data
->beacon_count
== CAL_NUM_OF_BEACONS
) {
1278 /* Analyze signal for disconnected antenna */
1279 average_sig
[0] = (data
->chain_signal_a
) / CAL_NUM_OF_BEACONS
;
1280 average_sig
[1] = (data
->chain_signal_b
) / CAL_NUM_OF_BEACONS
;
1281 average_sig
[2] = (data
->chain_signal_c
) / CAL_NUM_OF_BEACONS
;
1283 if (average_sig
[0] >= average_sig
[1]) {
1284 max_average_sig
= average_sig
[0];
1285 max_average_sig_antenna_i
= 0;
1286 active_chains
= (1 << max_average_sig_antenna_i
);
1288 max_average_sig
= average_sig
[1];
1289 max_average_sig_antenna_i
= 1;
1290 active_chains
= (1 << max_average_sig_antenna_i
);
1293 if (average_sig
[2] >= max_average_sig
) {
1294 max_average_sig
= average_sig
[2];
1295 max_average_sig_antenna_i
= 2;
1296 active_chains
= (1 << max_average_sig_antenna_i
);
1299 IWL_DEBUG_CALIB("average_sig: a %d b %d c %d\n",
1300 average_sig
[0], average_sig
[1], average_sig
[2]);
1301 IWL_DEBUG_CALIB("max_average_sig = %d, antenna %d\n",
1302 max_average_sig
, max_average_sig_antenna_i
);
1304 /* Compare signal strengths for all 3 receivers. */
1305 for (i
= 0; i
< NUM_RX_CHAINS
; i
++) {
1306 if (i
!= max_average_sig_antenna_i
) {
1307 s32 rssi_delta
= (max_average_sig
-
1310 /* If signal is very weak, compared with
1311 * strongest, mark it as disconnected. */
1312 if (rssi_delta
> MAXIMUM_ALLOWED_PATHLOSS
)
1313 data
->disconn_array
[i
] = 1;
1315 active_chains
|= (1 << i
);
1316 IWL_DEBUG_CALIB("i = %d rssiDelta = %d "
1317 "disconn_array[i] = %d\n",
1318 i
, rssi_delta
, data
->disconn_array
[i
]);
1322 /*If both chains A & B are disconnected -
1323 * connect B and leave A as is */
1324 if (data
->disconn_array
[CHAIN_A
] &&
1325 data
->disconn_array
[CHAIN_B
]) {
1326 data
->disconn_array
[CHAIN_B
] = 0;
1327 active_chains
|= (1 << CHAIN_B
);
1328 IWL_DEBUG_CALIB("both A & B chains are disconnected! "
1329 "W/A - declare B as connected\n");
1332 IWL_DEBUG_CALIB("active_chains (bitwise) = 0x%x\n",
1335 /* Save for use within RXON, TX, SCAN commands, etc. */
1336 priv
->valid_antenna
= active_chains
;
1338 /* Analyze noise for rx balance */
1339 average_noise
[0] = ((data
->chain_noise_a
)/CAL_NUM_OF_BEACONS
);
1340 average_noise
[1] = ((data
->chain_noise_b
)/CAL_NUM_OF_BEACONS
);
1341 average_noise
[2] = ((data
->chain_noise_c
)/CAL_NUM_OF_BEACONS
);
1343 for (i
= 0; i
< NUM_RX_CHAINS
; i
++) {
1344 if (!(data
->disconn_array
[i
]) &&
1345 (average_noise
[i
] <= min_average_noise
)) {
1346 /* This means that chain i is active and has
1347 * lower noise values so far: */
1348 min_average_noise
= average_noise
[i
];
1349 min_average_noise_antenna_i
= i
;
1353 data
->delta_gain_code
[min_average_noise_antenna_i
] = 0;
1355 IWL_DEBUG_CALIB("average_noise: a %d b %d c %d\n",
1356 average_noise
[0], average_noise
[1],
1359 IWL_DEBUG_CALIB("min_average_noise = %d, antenna %d\n",
1360 min_average_noise
, min_average_noise_antenna_i
);
1362 for (i
= 0; i
< NUM_RX_CHAINS
; i
++) {
1365 if (!(data
->disconn_array
[i
]) &&
1366 (data
->delta_gain_code
[i
] ==
1367 CHAIN_NOISE_DELTA_GAIN_INIT_VAL
)) {
1368 delta_g
= average_noise
[i
] - min_average_noise
;
1369 data
->delta_gain_code
[i
] = (u8
)((delta_g
*
1371 if (CHAIN_NOISE_MAX_DELTA_GAIN_CODE
<
1372 data
->delta_gain_code
[i
])
1373 data
->delta_gain_code
[i
] =
1374 CHAIN_NOISE_MAX_DELTA_GAIN_CODE
;
1376 data
->delta_gain_code
[i
] =
1377 (data
->delta_gain_code
[i
] | (1 << 2));
1379 data
->delta_gain_code
[i
] = 0;
1381 IWL_DEBUG_CALIB("delta_gain_codes: a %d b %d c %d\n",
1382 data
->delta_gain_code
[0],
1383 data
->delta_gain_code
[1],
1384 data
->delta_gain_code
[2]);
1386 /* Differential gain gets sent to uCode only once */
1387 if (!data
->radio_write
) {
1388 struct iwl_calibration_cmd cmd
;
1389 data
->radio_write
= 1;
1391 memset(&cmd
, 0, sizeof(cmd
));
1392 cmd
.opCode
= PHY_CALIBRATE_DIFF_GAIN_CMD
;
1393 cmd
.diff_gain_a
= data
->delta_gain_code
[0];
1394 cmd
.diff_gain_b
= data
->delta_gain_code
[1];
1395 cmd
.diff_gain_c
= data
->delta_gain_code
[2];
1396 rc
= iwl_send_cmd_pdu(priv
, REPLY_PHY_CALIBRATION_CMD
,
1399 IWL_DEBUG_CALIB("fail sending cmd "
1400 "REPLY_PHY_CALIBRATION_CMD \n");
1402 /* TODO we might want recalculate
1403 * rx_chain in rxon cmd */
1405 /* Mark so we run this algo only once! */
1406 data
->state
= IWL_CHAIN_NOISE_CALIBRATED
;
1408 data
->chain_noise_a
= 0;
1409 data
->chain_noise_b
= 0;
1410 data
->chain_noise_c
= 0;
1411 data
->chain_signal_a
= 0;
1412 data
->chain_signal_b
= 0;
1413 data
->chain_signal_c
= 0;
1414 data
->beacon_count
= 0;
1419 static void iwl4965_sensitivity_calibration(struct iwl_priv
*priv
,
1420 struct iwl_notif_statistics
*resp
)
1430 struct iwl_sensitivity_data
*data
= NULL
;
1431 struct statistics_rx_non_phy
*rx_info
= &(resp
->rx
.general
);
1432 struct statistics_rx
*statistics
= &(resp
->rx
);
1433 unsigned long flags
;
1434 struct statistics_general_data statis
;
1436 data
= &(priv
->sensitivity_data
);
1438 if (!iwl_is_associated(priv
)) {
1439 IWL_DEBUG_CALIB("<< - not associated\n");
1443 spin_lock_irqsave(&priv
->lock
, flags
);
1444 if (rx_info
->interference_data_flag
!= INTERFERENCE_DATA_AVAILABLE
) {
1445 IWL_DEBUG_CALIB("<< invalid data.\n");
1446 spin_unlock_irqrestore(&priv
->lock
, flags
);
1450 /* Extract Statistics: */
1451 rx_enable_time
= le32_to_cpu(rx_info
->channel_load
);
1452 fa_cck
= le32_to_cpu(statistics
->cck
.false_alarm_cnt
);
1453 fa_ofdm
= le32_to_cpu(statistics
->ofdm
.false_alarm_cnt
);
1454 bad_plcp_cck
= le32_to_cpu(statistics
->cck
.plcp_err
);
1455 bad_plcp_ofdm
= le32_to_cpu(statistics
->ofdm
.plcp_err
);
1457 statis
.beacon_silence_rssi_a
=
1458 le32_to_cpu(statistics
->general
.beacon_silence_rssi_a
);
1459 statis
.beacon_silence_rssi_b
=
1460 le32_to_cpu(statistics
->general
.beacon_silence_rssi_b
);
1461 statis
.beacon_silence_rssi_c
=
1462 le32_to_cpu(statistics
->general
.beacon_silence_rssi_c
);
1463 statis
.beacon_energy_a
=
1464 le32_to_cpu(statistics
->general
.beacon_energy_a
);
1465 statis
.beacon_energy_b
=
1466 le32_to_cpu(statistics
->general
.beacon_energy_b
);
1467 statis
.beacon_energy_c
=
1468 le32_to_cpu(statistics
->general
.beacon_energy_c
);
1470 spin_unlock_irqrestore(&priv
->lock
, flags
);
1472 IWL_DEBUG_CALIB("rx_enable_time = %u usecs\n", rx_enable_time
);
1474 if (!rx_enable_time
) {
1475 IWL_DEBUG_CALIB("<< RX Enable Time == 0! \n");
1479 /* These statistics increase monotonically, and do not reset
1480 * at each beacon. Calculate difference from last value, or just
1481 * use the new statistics value if it has reset or wrapped around. */
1482 if (data
->last_bad_plcp_cnt_cck
> bad_plcp_cck
)
1483 data
->last_bad_plcp_cnt_cck
= bad_plcp_cck
;
1485 bad_plcp_cck
-= data
->last_bad_plcp_cnt_cck
;
1486 data
->last_bad_plcp_cnt_cck
+= bad_plcp_cck
;
1489 if (data
->last_bad_plcp_cnt_ofdm
> bad_plcp_ofdm
)
1490 data
->last_bad_plcp_cnt_ofdm
= bad_plcp_ofdm
;
1492 bad_plcp_ofdm
-= data
->last_bad_plcp_cnt_ofdm
;
1493 data
->last_bad_plcp_cnt_ofdm
+= bad_plcp_ofdm
;
1496 if (data
->last_fa_cnt_ofdm
> fa_ofdm
)
1497 data
->last_fa_cnt_ofdm
= fa_ofdm
;
1499 fa_ofdm
-= data
->last_fa_cnt_ofdm
;
1500 data
->last_fa_cnt_ofdm
+= fa_ofdm
;
1503 if (data
->last_fa_cnt_cck
> fa_cck
)
1504 data
->last_fa_cnt_cck
= fa_cck
;
1506 fa_cck
-= data
->last_fa_cnt_cck
;
1507 data
->last_fa_cnt_cck
+= fa_cck
;
1510 /* Total aborted signal locks */
1511 norm_fa_ofdm
= fa_ofdm
+ bad_plcp_ofdm
;
1512 norm_fa_cck
= fa_cck
+ bad_plcp_cck
;
1514 IWL_DEBUG_CALIB("cck: fa %u badp %u ofdm: fa %u badp %u\n", fa_cck
,
1515 bad_plcp_cck
, fa_ofdm
, bad_plcp_ofdm
);
1517 iwl4965_sens_auto_corr_ofdm(priv
, norm_fa_ofdm
, rx_enable_time
);
1518 iwl4965_sens_energy_cck(priv
, norm_fa_cck
, rx_enable_time
, &statis
);
1519 rc
|= iwl4965_sensitivity_write(priv
, CMD_ASYNC
);
1524 static void iwl4965_bg_sensitivity_work(struct work_struct
*work
)
1526 struct iwl_priv
*priv
= container_of(work
, struct iwl_priv
,
1529 mutex_lock(&priv
->mutex
);
1531 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
) ||
1532 test_bit(STATUS_SCANNING
, &priv
->status
)) {
1533 mutex_unlock(&priv
->mutex
);
1537 if (priv
->start_calib
) {
1538 iwl4965_noise_calibration(priv
, &priv
->statistics
);
1540 if (priv
->sensitivity_data
.state
==
1541 IWL_SENS_CALIB_NEED_REINIT
) {
1542 iwl4965_init_sensitivity(priv
, CMD_ASYNC
, 0);
1543 priv
->sensitivity_data
.state
= IWL_SENS_CALIB_ALLOWED
;
1545 iwl4965_sensitivity_calibration(priv
,
1549 mutex_unlock(&priv
->mutex
);
1552 #endif /*CONFIG_IWLWIFI_SENSITIVITY*/
1554 static void iwl4965_bg_txpower_work(struct work_struct
*work
)
1556 struct iwl_priv
*priv
= container_of(work
, struct iwl_priv
,
1559 /* If a scan happened to start before we got here
1560 * then just return; the statistics notification will
1561 * kick off another scheduled work to compensate for
1562 * any temperature delta we missed here. */
1563 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
) ||
1564 test_bit(STATUS_SCANNING
, &priv
->status
))
1567 mutex_lock(&priv
->mutex
);
1569 /* Regardless of if we are assocaited, we must reconfigure the
1570 * TX power since frames can be sent on non-radar channels while
1572 iwl_hw_reg_send_txpower(priv
);
1574 /* Update last_temperature to keep is_calib_needed from running
1575 * when it isn't needed... */
1576 priv
->last_temperature
= priv
->temperature
;
1578 mutex_unlock(&priv
->mutex
);
1582 * Acquire priv->lock before calling this function !
1584 static void iwl4965_set_wr_ptrs(struct iwl_priv
*priv
, int txq_id
, u32 index
)
1586 iwl_write_restricted(priv
, HBUS_TARG_WRPTR
,
1587 (index
& 0xff) | (txq_id
<< 8));
1588 iwl_write_restricted_reg(priv
, SCD_QUEUE_RDPTR(txq_id
), index
);
1592 * Acquire priv->lock before calling this function !
1594 static void iwl4965_tx_queue_set_status(struct iwl_priv
*priv
,
1595 struct iwl_tx_queue
*txq
,
1596 int tx_fifo_id
, int scd_retry
)
1598 int txq_id
= txq
->q
.id
;
1599 int active
= test_bit(txq_id
, &priv
->txq_ctx_active_msk
)?1:0;
1601 iwl_write_restricted_reg(priv
, SCD_QUEUE_STATUS_BITS(txq_id
),
1602 (active
<< SCD_QUEUE_STTS_REG_POS_ACTIVE
) |
1603 (tx_fifo_id
<< SCD_QUEUE_STTS_REG_POS_TXF
) |
1604 (scd_retry
<< SCD_QUEUE_STTS_REG_POS_WSL
) |
1605 (scd_retry
<< SCD_QUEUE_STTS_REG_POS_SCD_ACK
) |
1606 SCD_QUEUE_STTS_REG_MSK
);
1608 txq
->sched_retry
= scd_retry
;
1610 IWL_DEBUG_INFO("%s %s Queue %d on AC %d\n",
1611 active
? "Activete" : "Deactivate",
1612 scd_retry
? "BA" : "AC", txq_id
, tx_fifo_id
);
1615 static const u16 default_queue_to_tx_fifo
[] = {
1625 static inline void iwl4965_txq_ctx_activate(struct iwl_priv
*priv
, int txq_id
)
1627 set_bit(txq_id
, &priv
->txq_ctx_active_msk
);
1630 static inline void iwl4965_txq_ctx_deactivate(struct iwl_priv
*priv
, int txq_id
)
1632 clear_bit(txq_id
, &priv
->txq_ctx_active_msk
);
1635 int iwl4965_alive_notify(struct iwl_priv
*priv
)
1639 unsigned long flags
;
1642 spin_lock_irqsave(&priv
->lock
, flags
);
1644 #ifdef CONFIG_IWLWIFI_SENSITIVITY
1645 memset(&(priv
->sensitivity_data
), 0,
1646 sizeof(struct iwl_sensitivity_data
));
1647 memset(&(priv
->chain_noise_data
), 0,
1648 sizeof(struct iwl_chain_noise_data
));
1649 for (i
= 0; i
< NUM_RX_CHAINS
; i
++)
1650 priv
->chain_noise_data
.delta_gain_code
[i
] =
1651 CHAIN_NOISE_DELTA_GAIN_INIT_VAL
;
1652 #endif /* CONFIG_IWLWIFI_SENSITIVITY*/
1653 rc
= iwl_grab_restricted_access(priv
);
1655 spin_unlock_irqrestore(&priv
->lock
, flags
);
1659 priv
->scd_base_addr
= iwl_read_restricted_reg(priv
, SCD_SRAM_BASE_ADDR
);
1660 a
= priv
->scd_base_addr
+ SCD_CONTEXT_DATA_OFFSET
;
1661 for (; a
< priv
->scd_base_addr
+ SCD_TX_STTS_BITMAP_OFFSET
; a
+= 4)
1662 iwl_write_restricted_mem(priv
, a
, 0);
1663 for (; a
< priv
->scd_base_addr
+ SCD_TRANSLATE_TBL_OFFSET
; a
+= 4)
1664 iwl_write_restricted_mem(priv
, a
, 0);
1665 for (; a
< sizeof(u16
) * priv
->hw_setting
.max_txq_num
; a
+= 4)
1666 iwl_write_restricted_mem(priv
, a
, 0);
1668 iwl_write_restricted_reg(priv
, SCD_DRAM_BASE_ADDR
,
1669 (priv
->hw_setting
.shared_phys
+
1670 offsetof(struct iwl_shared
, queues_byte_cnt_tbls
)) >> 10);
1671 iwl_write_restricted_reg(priv
, SCD_QUEUECHAIN_SEL
, 0);
1673 /* initiate the queues */
1674 for (i
= 0; i
< priv
->hw_setting
.max_txq_num
; i
++) {
1675 iwl_write_restricted_reg(priv
, SCD_QUEUE_RDPTR(i
), 0);
1676 iwl_write_restricted(priv
, HBUS_TARG_WRPTR
, 0 | (i
<< 8));
1677 iwl_write_restricted_mem(priv
, priv
->scd_base_addr
+
1678 SCD_CONTEXT_QUEUE_OFFSET(i
),
1680 SCD_QUEUE_CTX_REG1_WIN_SIZE_POS
) &
1681 SCD_QUEUE_CTX_REG1_WIN_SIZE_MSK
);
1682 iwl_write_restricted_mem(priv
, priv
->scd_base_addr
+
1683 SCD_CONTEXT_QUEUE_OFFSET(i
) +
1686 SCD_QUEUE_CTX_REG2_FRAME_LIMIT_POS
) &
1687 SCD_QUEUE_CTX_REG2_FRAME_LIMIT_MSK
);
1690 iwl_write_restricted_reg(priv
, SCD_INTERRUPT_MASK
,
1691 (1 << priv
->hw_setting
.max_txq_num
) - 1);
1693 iwl_write_restricted_reg(priv
, SCD_TXFACT
,
1694 SCD_TXFACT_REG_TXFIFO_MASK(0, 7));
1696 iwl4965_set_wr_ptrs(priv
, IWL_CMD_QUEUE_NUM
, 0);
1697 /* map qos queues to fifos one-to-one */
1698 for (i
= 0; i
< ARRAY_SIZE(default_queue_to_tx_fifo
); i
++) {
1699 int ac
= default_queue_to_tx_fifo
[i
];
1700 iwl4965_txq_ctx_activate(priv
, i
);
1701 iwl4965_tx_queue_set_status(priv
, &priv
->txq
[i
], ac
, 0);
1704 iwl_release_restricted_access(priv
);
1705 spin_unlock_irqrestore(&priv
->lock
, flags
);
1710 int iwl_hw_set_hw_setting(struct iwl_priv
*priv
)
1712 priv
->hw_setting
.shared_virt
=
1713 pci_alloc_consistent(priv
->pci_dev
,
1714 sizeof(struct iwl_shared
),
1715 &priv
->hw_setting
.shared_phys
);
1717 if (!priv
->hw_setting
.shared_virt
)
1720 memset(priv
->hw_setting
.shared_virt
, 0, sizeof(struct iwl_shared
));
1722 priv
->hw_setting
.max_txq_num
= iwl_param_queues_num
;
1723 priv
->hw_setting
.ac_queue_count
= AC_NUM
;
1724 priv
->hw_setting
.tx_cmd_len
= sizeof(struct iwl_tx_cmd
);
1725 priv
->hw_setting
.max_rxq_size
= RX_QUEUE_SIZE
;
1726 priv
->hw_setting
.max_rxq_log
= RX_QUEUE_SIZE_LOG
;
1728 priv
->hw_setting
.max_stations
= IWL4965_STATION_COUNT
;
1729 priv
->hw_setting
.bcast_sta_id
= IWL4965_BROADCAST_ID
;
1734 * iwl_hw_txq_ctx_free - Free TXQ Context
1736 * Destroy all TX DMA queues and structures
1738 void iwl_hw_txq_ctx_free(struct iwl_priv
*priv
)
1743 for (txq_id
= 0; txq_id
< priv
->hw_setting
.max_txq_num
; txq_id
++)
1744 iwl_tx_queue_free(priv
, &priv
->txq
[txq_id
]);
1746 iwl4965_kw_free(priv
);
1750 * iwl_hw_txq_free_tfd - Free one TFD, those at index [txq->q.read_ptr]
1752 * Does NOT advance any indexes
1754 int iwl_hw_txq_free_tfd(struct iwl_priv
*priv
, struct iwl_tx_queue
*txq
)
1756 struct iwl_tfd_frame
*bd_tmp
= (struct iwl_tfd_frame
*)&txq
->bd
[0];
1757 struct iwl_tfd_frame
*bd
= &bd_tmp
[txq
->q
.read_ptr
];
1758 struct pci_dev
*dev
= priv
->pci_dev
;
1764 if (txq
->q
.id
== IWL_CMD_QUEUE_NUM
)
1765 /* nothing to cleanup after for host commands */
1769 counter
= IWL_GET_BITS(*bd
, num_tbs
);
1770 if (counter
> MAX_NUM_OF_TBS
) {
1771 IWL_ERROR("Too many chunks: %i\n", counter
);
1772 /* @todo issue fatal error, it is quite serious situation */
1776 /* unmap chunks if any */
1778 for (i
= 0; i
< counter
; i
++) {
1785 IWL_GET_BITS(bd
->pa
[index
], tb2_addr_lo16
) |
1786 (IWL_GET_BITS(bd
->pa
[index
],
1787 tb2_addr_hi20
) << 16),
1788 IWL_GET_BITS(bd
->pa
[index
], tb2_len
),
1792 pci_unmap_single(dev
,
1793 le32_to_cpu(bd
->pa
[index
].tb1_addr
),
1794 IWL_GET_BITS(bd
->pa
[index
], tb1_len
),
1797 if (txq
->txb
[txq
->q
.read_ptr
].skb
[i
]) {
1798 struct sk_buff
*skb
= txq
->txb
[txq
->q
.read_ptr
].skb
[i
];
1801 txq
->txb
[txq
->q
.read_ptr
].skb
[i
] = NULL
;
1807 int iwl_hw_reg_set_txpower(struct iwl_priv
*priv
, s8 power
)
1809 IWL_ERROR("TODO: Implement iwl_hw_reg_set_txpower!\n");
1813 static s32
iwl4965_math_div_round(s32 num
, s32 denom
, s32
*res
)
1826 *res
= ((num
* 2 + denom
) / (denom
* 2)) * sign
;
1831 static s32
iwl4965_get_voltage_compensation(s32 eeprom_voltage
,
1832 s32 current_voltage
)
1836 if ((TX_POWER_IWL_ILLEGAL_VOLTAGE
== eeprom_voltage
) ||
1837 (TX_POWER_IWL_ILLEGAL_VOLTAGE
== current_voltage
))
1840 iwl4965_math_div_round(current_voltage
- eeprom_voltage
,
1841 TX_POWER_IWL_VOLTAGE_CODES_PER_03V
, &comp
);
1843 if (current_voltage
> eeprom_voltage
)
1845 if ((comp
< -2) || (comp
> 2))
1851 static const struct iwl_channel_info
*
1852 iwl4965_get_channel_txpower_info(struct iwl_priv
*priv
, u8 phymode
, u16 channel
)
1854 const struct iwl_channel_info
*ch_info
;
1856 ch_info
= iwl_get_channel_info(priv
, phymode
, channel
);
1858 if (!is_channel_valid(ch_info
))
1864 static s32
iwl4965_get_tx_atten_grp(u16 channel
)
1866 if (channel
>= CALIB_IWL_TX_ATTEN_GR5_FCH
&&
1867 channel
<= CALIB_IWL_TX_ATTEN_GR5_LCH
)
1868 return CALIB_CH_GROUP_5
;
1870 if (channel
>= CALIB_IWL_TX_ATTEN_GR1_FCH
&&
1871 channel
<= CALIB_IWL_TX_ATTEN_GR1_LCH
)
1872 return CALIB_CH_GROUP_1
;
1874 if (channel
>= CALIB_IWL_TX_ATTEN_GR2_FCH
&&
1875 channel
<= CALIB_IWL_TX_ATTEN_GR2_LCH
)
1876 return CALIB_CH_GROUP_2
;
1878 if (channel
>= CALIB_IWL_TX_ATTEN_GR3_FCH
&&
1879 channel
<= CALIB_IWL_TX_ATTEN_GR3_LCH
)
1880 return CALIB_CH_GROUP_3
;
1882 if (channel
>= CALIB_IWL_TX_ATTEN_GR4_FCH
&&
1883 channel
<= CALIB_IWL_TX_ATTEN_GR4_LCH
)
1884 return CALIB_CH_GROUP_4
;
1886 IWL_ERROR("Can't find txatten group for channel %d.\n", channel
);
1890 static u32
iwl4965_get_sub_band(const struct iwl_priv
*priv
, u32 channel
)
1894 for (b
= 0; b
< EEPROM_TX_POWER_BANDS
; b
++) {
1895 if (priv
->eeprom
.calib_info
.band_info
[b
].ch_from
== 0)
1898 if ((channel
>= priv
->eeprom
.calib_info
.band_info
[b
].ch_from
)
1899 && (channel
<= priv
->eeprom
.calib_info
.band_info
[b
].ch_to
))
1906 static s32
iwl4965_interpolate_value(s32 x
, s32 x1
, s32 y1
, s32 x2
, s32 y2
)
1913 iwl4965_math_div_round((x2
- x
) * (y1
- y2
), (x2
- x1
), &val
);
1918 static int iwl4965_interpolate_chan(struct iwl_priv
*priv
, u32 channel
,
1919 struct iwl_eeprom_calib_ch_info
*chan_info
)
1924 const struct iwl_eeprom_calib_measure
*m1
;
1925 const struct iwl_eeprom_calib_measure
*m2
;
1926 struct iwl_eeprom_calib_measure
*omeas
;
1930 s
= iwl4965_get_sub_band(priv
, channel
);
1931 if (s
>= EEPROM_TX_POWER_BANDS
) {
1932 IWL_ERROR("Tx Power can not find channel %d ", channel
);
1936 ch_i1
= priv
->eeprom
.calib_info
.band_info
[s
].ch1
.ch_num
;
1937 ch_i2
= priv
->eeprom
.calib_info
.band_info
[s
].ch2
.ch_num
;
1938 chan_info
->ch_num
= (u8
) channel
;
1940 IWL_DEBUG_TXPOWER("channel %d subband %d factory cal ch %d & %d\n",
1941 channel
, s
, ch_i1
, ch_i2
);
1943 for (c
= 0; c
< EEPROM_TX_POWER_TX_CHAINS
; c
++) {
1944 for (m
= 0; m
< EEPROM_TX_POWER_MEASUREMENTS
; m
++) {
1945 m1
= &(priv
->eeprom
.calib_info
.band_info
[s
].ch1
.
1946 measurements
[c
][m
]);
1947 m2
= &(priv
->eeprom
.calib_info
.band_info
[s
].ch2
.
1948 measurements
[c
][m
]);
1949 omeas
= &(chan_info
->measurements
[c
][m
]);
1952 (u8
) iwl4965_interpolate_value(channel
, ch_i1
,
1957 (u8
) iwl4965_interpolate_value(channel
, ch_i1
,
1958 m1
->gain_idx
, ch_i2
,
1960 omeas
->temperature
=
1961 (u8
) iwl4965_interpolate_value(channel
, ch_i1
,
1966 (s8
) iwl4965_interpolate_value(channel
, ch_i1
,
1971 ("chain %d meas %d AP1=%d AP2=%d AP=%d\n", c
, m
,
1972 m1
->actual_pow
, m2
->actual_pow
, omeas
->actual_pow
);
1974 ("chain %d meas %d NI1=%d NI2=%d NI=%d\n", c
, m
,
1975 m1
->gain_idx
, m2
->gain_idx
, omeas
->gain_idx
);
1977 ("chain %d meas %d PA1=%d PA2=%d PA=%d\n", c
, m
,
1978 m1
->pa_det
, m2
->pa_det
, omeas
->pa_det
);
1980 ("chain %d meas %d T1=%d T2=%d T=%d\n", c
, m
,
1981 m1
->temperature
, m2
->temperature
,
1982 omeas
->temperature
);
1989 /* bit-rate-dependent table to prevent Tx distortion, in half-dB units,
1990 * for OFDM 6, 12, 18, 24, 36, 48, 54, 60 MBit, and CCK all rates. */
1991 static s32 back_off_table
[] = {
1992 10, 10, 10, 10, 10, 15, 17, 20, /* OFDM SISO 20 MHz */
1993 10, 10, 10, 10, 10, 15, 17, 20, /* OFDM MIMO 20 MHz */
1994 10, 10, 10, 10, 10, 15, 17, 20, /* OFDM SISO 40 MHz */
1995 10, 10, 10, 10, 10, 15, 17, 20, /* OFDM MIMO 40 MHz */
1999 /* Thermal compensation values for txpower for various frequency ranges ...
2000 * ratios from 3:1 to 4.5:1 of degrees (Celsius) per half-dB gain adjust */
2001 static struct iwl_txpower_comp_entry
{
2002 s32 degrees_per_05db_a
;
2003 s32 degrees_per_05db_a_denom
;
2004 } tx_power_cmp_tble
[CALIB_CH_GROUP_MAX
] = {
2005 {9, 2}, /* group 0 5.2, ch 34-43 */
2006 {4, 1}, /* group 1 5.2, ch 44-70 */
2007 {4, 1}, /* group 2 5.2, ch 71-124 */
2008 {4, 1}, /* group 3 5.2, ch 125-200 */
2009 {3, 1} /* group 4 2.4, ch all */
2012 static s32
get_min_power_index(s32 rate_power_index
, u32 band
)
2015 if ((rate_power_index
& 7) <= 4)
2016 return MIN_TX_GAIN_INDEX_52GHZ_EXT
;
2018 return MIN_TX_GAIN_INDEX
;
2026 static const struct gain_entry gain_table
[2][108] = {
2027 /* 5.2GHz power gain index table */
2029 {123, 0x3F}, /* highest txpower */
2138 /* 2.4GHz power gain index table */
2140 {110, 0x3f}, /* highest txpower */
2251 static int iwl4965_fill_txpower_tbl(struct iwl_priv
*priv
, u8 band
, u16 channel
,
2252 u8 is_fat
, u8 ctrl_chan_high
,
2253 struct iwl_tx_power_db
*tx_power_tbl
)
2255 u8 saturation_power
;
2257 s32 user_target_power
;
2261 s32 current_regulatory
;
2262 s32 txatten_grp
= CALIB_CH_GROUP_MAX
;
2265 const struct iwl_channel_info
*ch_info
= NULL
;
2266 struct iwl_eeprom_calib_ch_info ch_eeprom_info
;
2267 const struct iwl_eeprom_calib_measure
*measurement
;
2270 s32 voltage_compensation
;
2271 s32 degrees_per_05db_num
;
2272 s32 degrees_per_05db_denom
;
2274 s32 temperature_comp
[2];
2275 s32 factory_gain_index
[2];
2276 s32 factory_actual_pwr
[2];
2279 /* Sanity check requested level (dBm) */
2280 if (priv
->user_txpower_limit
< IWL_TX_POWER_TARGET_POWER_MIN
) {
2281 IWL_WARNING("Requested user TXPOWER %d below limit.\n",
2282 priv
->user_txpower_limit
);
2285 if (priv
->user_txpower_limit
> IWL_TX_POWER_TARGET_POWER_MAX
) {
2286 IWL_WARNING("Requested user TXPOWER %d above limit.\n",
2287 priv
->user_txpower_limit
);
2291 /* user_txpower_limit is in dBm, convert to half-dBm (half-dB units
2292 * are used for indexing into txpower table) */
2293 user_target_power
= 2 * priv
->user_txpower_limit
;
2295 /* Get current (RXON) channel, band, width */
2297 iwl4965_get_channel_txpower_info(priv
, priv
->phymode
, channel
);
2299 IWL_DEBUG_TXPOWER("chan %d band %d is_fat %d\n", channel
, band
,
2305 /* get txatten group, used to select 1) thermal txpower adjustment
2306 * and 2) mimo txpower balance between Tx chains. */
2307 txatten_grp
= iwl4965_get_tx_atten_grp(channel
);
2308 if (txatten_grp
< 0)
2311 IWL_DEBUG_TXPOWER("channel %d belongs to txatten group %d\n",
2312 channel
, txatten_grp
);
2321 /* hardware txpower limits ...
2322 * saturation (clipping distortion) txpowers are in half-dBm */
2324 saturation_power
= priv
->eeprom
.calib_info
.saturation_power24
;
2326 saturation_power
= priv
->eeprom
.calib_info
.saturation_power52
;
2328 if (saturation_power
< IWL_TX_POWER_SATURATION_MIN
||
2329 saturation_power
> IWL_TX_POWER_SATURATION_MAX
) {
2331 saturation_power
= IWL_TX_POWER_DEFAULT_SATURATION_24
;
2333 saturation_power
= IWL_TX_POWER_DEFAULT_SATURATION_52
;
2336 /* regulatory txpower limits ... reg_limit values are in half-dBm,
2337 * max_power_avg values are in dBm, convert * 2 */
2339 reg_limit
= ch_info
->fat_max_power_avg
* 2;
2341 reg_limit
= ch_info
->max_power_avg
* 2;
2343 if ((reg_limit
< IWL_TX_POWER_REGULATORY_MIN
) ||
2344 (reg_limit
> IWL_TX_POWER_REGULATORY_MAX
)) {
2346 reg_limit
= IWL_TX_POWER_DEFAULT_REGULATORY_24
;
2348 reg_limit
= IWL_TX_POWER_DEFAULT_REGULATORY_52
;
2351 /* Interpolate txpower calibration values for this channel,
2352 * based on factory calibration tests on spaced channels. */
2353 iwl4965_interpolate_chan(priv
, channel
, &ch_eeprom_info
);
2355 /* calculate tx gain adjustment based on power supply voltage */
2356 voltage
= priv
->eeprom
.calib_info
.voltage
;
2357 init_voltage
= (s32
)le32_to_cpu(priv
->card_alive_init
.voltage
);
2358 voltage_compensation
=
2359 iwl4965_get_voltage_compensation(voltage
, init_voltage
);
2361 IWL_DEBUG_TXPOWER("curr volt %d eeprom volt %d volt comp %d\n",
2363 voltage
, voltage_compensation
);
2365 /* get current temperature (Celsius) */
2366 current_temp
= max(priv
->temperature
, IWL_TX_POWER_TEMPERATURE_MIN
);
2367 current_temp
= min(priv
->temperature
, IWL_TX_POWER_TEMPERATURE_MAX
);
2368 current_temp
= KELVIN_TO_CELSIUS(current_temp
);
2370 /* select thermal txpower adjustment params, based on channel group
2371 * (same frequency group used for mimo txatten adjustment) */
2372 degrees_per_05db_num
=
2373 tx_power_cmp_tble
[txatten_grp
].degrees_per_05db_a
;
2374 degrees_per_05db_denom
=
2375 tx_power_cmp_tble
[txatten_grp
].degrees_per_05db_a_denom
;
2377 /* get per-chain txpower values from factory measurements */
2378 for (c
= 0; c
< 2; c
++) {
2379 measurement
= &ch_eeprom_info
.measurements
[c
][1];
2381 /* txgain adjustment (in half-dB steps) based on difference
2382 * between factory and current temperature */
2383 factory_temp
= measurement
->temperature
;
2384 iwl4965_math_div_round((current_temp
- factory_temp
) *
2385 degrees_per_05db_denom
,
2386 degrees_per_05db_num
,
2387 &temperature_comp
[c
]);
2389 factory_gain_index
[c
] = measurement
->gain_idx
;
2390 factory_actual_pwr
[c
] = measurement
->actual_pow
;
2392 IWL_DEBUG_TXPOWER("chain = %d\n", c
);
2393 IWL_DEBUG_TXPOWER("fctry tmp %d, "
2394 "curr tmp %d, comp %d steps\n",
2395 factory_temp
, current_temp
,
2396 temperature_comp
[c
]);
2398 IWL_DEBUG_TXPOWER("fctry idx %d, fctry pwr %d\n",
2399 factory_gain_index
[c
],
2400 factory_actual_pwr
[c
]);
2403 /* for each of 33 bit-rates (including 1 for CCK) */
2404 for (i
= 0; i
< POWER_TABLE_NUM_ENTRIES
; i
++) {
2406 union iwl_tx_power_dual_stream tx_power
;
2408 /* for mimo, reduce each chain's txpower by half
2409 * (3dB, 6 steps), so total output power is regulatory
2412 current_regulatory
= reg_limit
-
2413 IWL_TX_POWER_MIMO_REGULATORY_COMPENSATION
;
2416 current_regulatory
= reg_limit
;
2420 /* find txpower limit, either hardware or regulatory */
2421 power_limit
= saturation_power
- back_off_table
[i
];
2422 if (power_limit
> current_regulatory
)
2423 power_limit
= current_regulatory
;
2425 /* reduce user's txpower request if necessary
2426 * for this rate on this channel */
2427 target_power
= user_target_power
;
2428 if (target_power
> power_limit
)
2429 target_power
= power_limit
;
2431 IWL_DEBUG_TXPOWER("rate %d sat %d reg %d usr %d tgt %d\n",
2432 i
, saturation_power
- back_off_table
[i
],
2433 current_regulatory
, user_target_power
,
2436 /* for each of 2 Tx chains (radio transmitters) */
2437 for (c
= 0; c
< 2; c
++) {
2442 (s32
)le32_to_cpu(priv
->card_alive_init
.
2443 tx_atten
[txatten_grp
][c
]);
2447 /* calculate index; higher index means lower txpower */
2448 power_index
= (u8
) (factory_gain_index
[c
] -
2450 factory_actual_pwr
[c
]) -
2451 temperature_comp
[c
] -
2452 voltage_compensation
+
2455 /* IWL_DEBUG_TXPOWER("calculated txpower index %d\n",
2458 if (power_index
< get_min_power_index(i
, band
))
2459 power_index
= get_min_power_index(i
, band
);
2461 /* adjust 5 GHz index to support negative indexes */
2465 /* CCK, rate 32, reduce txpower for CCK */
2466 if (i
== POWER_TABLE_CCK_ENTRY
)
2468 IWL_TX_POWER_CCK_COMPENSATION_C_STEP
;
2470 /* stay within the table! */
2471 if (power_index
> 107) {
2472 IWL_WARNING("txpower index %d > 107\n",
2476 if (power_index
< 0) {
2477 IWL_WARNING("txpower index %d < 0\n",
2482 /* fill txpower command for this rate/chain */
2483 tx_power
.s
.radio_tx_gain
[c
] =
2484 gain_table
[band
][power_index
].radio
;
2485 tx_power
.s
.dsp_predis_atten
[c
] =
2486 gain_table
[band
][power_index
].dsp
;
2488 IWL_DEBUG_TXPOWER("chain %d mimo %d index %d "
2489 "gain 0x%02x dsp %d\n",
2490 c
, atten_value
, power_index
,
2491 tx_power
.s
.radio_tx_gain
[c
],
2492 tx_power
.s
.dsp_predis_atten
[c
]);
2493 }/* for each chain */
2495 tx_power_tbl
->power_tbl
[i
].dw
= cpu_to_le32(tx_power
.dw
);
2497 }/* for each rate */
2503 * iwl_hw_reg_send_txpower - Configure the TXPOWER level user limit
2505 * Uses the active RXON for channel, band, and characteristics (fat, high)
2506 * The power limit is taken from priv->user_txpower_limit.
2508 int iwl_hw_reg_send_txpower(struct iwl_priv
*priv
)
2510 struct iwl_txpowertable_cmd cmd
= { 0 };
2514 u8 ctrl_chan_high
= 0;
2516 if (test_bit(STATUS_SCANNING
, &priv
->status
)) {
2517 /* If this gets hit a lot, switch it to a BUG() and catch
2518 * the stack trace to find out who is calling this during
2520 IWL_WARNING("TX Power requested while scanning!\n");
2524 band
= ((priv
->phymode
== MODE_IEEE80211B
) ||
2525 (priv
->phymode
== MODE_IEEE80211G
));
2527 is_fat
= is_fat_channel(priv
->active_rxon
.flags
);
2530 (priv
->active_rxon
.flags
& RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK
))
2534 cmd
.channel
= priv
->active_rxon
.channel
;
2536 rc
= iwl4965_fill_txpower_tbl(priv
, band
,
2537 le16_to_cpu(priv
->active_rxon
.channel
),
2538 is_fat
, ctrl_chan_high
, &cmd
.tx_power
);
2542 rc
= iwl_send_cmd_pdu(priv
, REPLY_TX_PWR_TABLE_CMD
, sizeof(cmd
), &cmd
);
2546 int iwl_hw_channel_switch(struct iwl_priv
*priv
, u16 channel
)
2551 u8 ctrl_chan_high
= 0;
2552 struct iwl_channel_switch_cmd cmd
= { 0 };
2553 const struct iwl_channel_info
*ch_info
;
2555 band
= ((priv
->phymode
== MODE_IEEE80211B
) ||
2556 (priv
->phymode
== MODE_IEEE80211G
));
2558 ch_info
= iwl_get_channel_info(priv
, priv
->phymode
, channel
);
2560 is_fat
= is_fat_channel(priv
->staging_rxon
.flags
);
2563 (priv
->active_rxon
.flags
& RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK
))
2567 cmd
.expect_beacon
= 0;
2568 cmd
.channel
= cpu_to_le16(channel
);
2569 cmd
.rxon_flags
= priv
->active_rxon
.flags
;
2570 cmd
.rxon_filter_flags
= priv
->active_rxon
.filter_flags
;
2571 cmd
.switch_time
= cpu_to_le32(priv
->ucode_beacon_time
);
2573 cmd
.expect_beacon
= is_channel_radar(ch_info
);
2575 cmd
.expect_beacon
= 1;
2577 rc
= iwl4965_fill_txpower_tbl(priv
, band
, channel
, is_fat
,
2578 ctrl_chan_high
, &cmd
.tx_power
);
2580 IWL_DEBUG_11H("error:%d fill txpower_tbl\n", rc
);
2584 rc
= iwl_send_cmd_pdu(priv
, REPLY_CHANNEL_SWITCH
, sizeof(cmd
), &cmd
);
2588 #define RTS_HCCA_RETRY_LIMIT 3
2589 #define RTS_DFAULT_RETRY_LIMIT 60
2591 void iwl_hw_build_tx_cmd_rate(struct iwl_priv
*priv
,
2592 struct iwl_cmd
*cmd
,
2593 struct ieee80211_tx_control
*ctrl
,
2594 struct ieee80211_hdr
*hdr
, int sta_id
,
2598 u8 rts_retry_limit
= 0;
2599 u8 data_retry_limit
= 0;
2601 u16 fc
= le16_to_cpu(hdr
->frame_control
);
2603 tx_flags
= cmd
->cmd
.tx
.tx_flags
;
2605 rate
= iwl_rates
[ctrl
->tx_rate
].plcp
;
2607 rts_retry_limit
= (is_hcca
) ?
2608 RTS_HCCA_RETRY_LIMIT
: RTS_DFAULT_RETRY_LIMIT
;
2610 if (ieee80211_is_probe_response(fc
)) {
2611 data_retry_limit
= 3;
2612 if (data_retry_limit
< rts_retry_limit
)
2613 rts_retry_limit
= data_retry_limit
;
2615 data_retry_limit
= IWL_DEFAULT_TX_RETRY
;
2617 if (priv
->data_retry_limit
!= -1)
2618 data_retry_limit
= priv
->data_retry_limit
;
2620 if ((fc
& IEEE80211_FCTL_FTYPE
) == IEEE80211_FTYPE_MGMT
) {
2621 switch (fc
& IEEE80211_FCTL_STYPE
) {
2622 case IEEE80211_STYPE_AUTH
:
2623 case IEEE80211_STYPE_DEAUTH
:
2624 case IEEE80211_STYPE_ASSOC_REQ
:
2625 case IEEE80211_STYPE_REASSOC_REQ
:
2626 if (tx_flags
& TX_CMD_FLG_RTS_MSK
) {
2627 tx_flags
&= ~TX_CMD_FLG_RTS_MSK
;
2628 tx_flags
|= TX_CMD_FLG_CTS_MSK
;
2636 cmd
->cmd
.tx
.rts_retry_limit
= rts_retry_limit
;
2637 cmd
->cmd
.tx
.data_retry_limit
= data_retry_limit
;
2638 cmd
->cmd
.tx
.rate_n_flags
= iwl_hw_set_rate_n_flags(rate
, 0);
2639 cmd
->cmd
.tx
.tx_flags
= tx_flags
;
2642 int iwl_hw_get_rx_read(struct iwl_priv
*priv
)
2644 struct iwl_shared
*shared_data
= priv
->hw_setting
.shared_virt
;
2646 return IWL_GET_BITS(*shared_data
, rb_closed_stts_rb_num
);
2649 int iwl_hw_get_temperature(struct iwl_priv
*priv
)
2651 return priv
->temperature
;
2654 unsigned int iwl_hw_get_beacon_cmd(struct iwl_priv
*priv
,
2655 struct iwl_frame
*frame
, u8 rate
)
2657 struct iwl_tx_beacon_cmd
*tx_beacon_cmd
;
2658 unsigned int frame_size
;
2660 tx_beacon_cmd
= &frame
->u
.beacon
;
2661 memset(tx_beacon_cmd
, 0, sizeof(*tx_beacon_cmd
));
2663 tx_beacon_cmd
->tx
.sta_id
= IWL4965_BROADCAST_ID
;
2664 tx_beacon_cmd
->tx
.stop_time
.life_time
= TX_CMD_LIFE_TIME_INFINITE
;
2666 frame_size
= iwl_fill_beacon_frame(priv
,
2667 tx_beacon_cmd
->frame
,
2669 sizeof(frame
->u
) - sizeof(*tx_beacon_cmd
));
2671 BUG_ON(frame_size
> MAX_MPDU_SIZE
);
2672 tx_beacon_cmd
->tx
.len
= cpu_to_le16((u16
)frame_size
);
2674 if ((rate
== IWL_RATE_1M_PLCP
) || (rate
>= IWL_RATE_2M_PLCP
))
2675 tx_beacon_cmd
->tx
.rate_n_flags
=
2676 iwl_hw_set_rate_n_flags(rate
, RATE_MCS_CCK_MSK
);
2678 tx_beacon_cmd
->tx
.rate_n_flags
=
2679 iwl_hw_set_rate_n_flags(rate
, 0);
2681 tx_beacon_cmd
->tx
.tx_flags
= (TX_CMD_FLG_SEQ_CTL_MSK
|
2682 TX_CMD_FLG_TSF_MSK
| TX_CMD_FLG_STA_RATE_MSK
);
2683 return (sizeof(*tx_beacon_cmd
) + frame_size
);
2686 int iwl_hw_tx_queue_init(struct iwl_priv
*priv
, struct iwl_tx_queue
*txq
)
2689 unsigned long flags
;
2690 int txq_id
= txq
->q
.id
;
2692 spin_lock_irqsave(&priv
->lock
, flags
);
2693 rc
= iwl_grab_restricted_access(priv
);
2695 spin_unlock_irqrestore(&priv
->lock
, flags
);
2699 iwl_write_restricted(priv
, FH_MEM_CBBC_QUEUE(txq_id
),
2700 txq
->q
.dma_addr
>> 8);
2701 iwl_write_restricted(
2702 priv
, IWL_FH_TCSR_CHNL_TX_CONFIG_REG(txq_id
),
2703 IWL_FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE
|
2704 IWL_FH_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_ENABLE_VAL
);
2705 iwl_release_restricted_access(priv
);
2706 spin_unlock_irqrestore(&priv
->lock
, flags
);
2711 static inline u8
iwl4965_get_dma_hi_address(dma_addr_t addr
)
2713 return sizeof(addr
) > sizeof(u32
) ? (addr
>> 16) >> 16 : 0;
2716 int iwl_hw_txq_attach_buf_to_tfd(struct iwl_priv
*priv
, void *ptr
,
2717 dma_addr_t addr
, u16 len
)
2720 struct iwl_tfd_frame
*tfd
= ptr
;
2721 u32 num_tbs
= IWL_GET_BITS(*tfd
, num_tbs
);
2723 if ((num_tbs
>= MAX_NUM_OF_TBS
) || (num_tbs
< 0)) {
2724 IWL_ERROR("Error can not send more than %d chunks\n",
2729 index
= num_tbs
/ 2;
2730 is_odd
= num_tbs
& 0x1;
2733 tfd
->pa
[index
].tb1_addr
= cpu_to_le32(addr
);
2734 IWL_SET_BITS(tfd
->pa
[index
], tb1_addr_hi
,
2735 iwl4965_get_dma_hi_address(addr
));
2736 IWL_SET_BITS(tfd
->pa
[index
], tb1_len
, len
);
2738 IWL_SET_BITS(tfd
->pa
[index
], tb2_addr_lo16
,
2739 (u32
) (addr
& 0xffff));
2740 IWL_SET_BITS(tfd
->pa
[index
], tb2_addr_hi20
, addr
>> 16);
2741 IWL_SET_BITS(tfd
->pa
[index
], tb2_len
, len
);
2744 IWL_SET_BITS(*tfd
, num_tbs
, num_tbs
+ 1);
2749 void iwl_hw_card_show_info(struct iwl_priv
*priv
)
2751 u16 hw_version
= priv
->eeprom
.board_revision_4965
;
2753 IWL_DEBUG_INFO("4965ABGN HW Version %u.%u.%u\n",
2754 ((hw_version
>> 8) & 0x0F),
2755 ((hw_version
>> 8) >> 4), (hw_version
& 0x00FF));
2757 IWL_DEBUG_INFO("4965ABGN PBA Number %.16s\n",
2758 priv
->eeprom
.board_pba_number_4965
);
2761 #define IWL_TX_CRC_SIZE 4
2762 #define IWL_TX_DELIMITER_SIZE 4
2764 int iwl4965_tx_queue_update_wr_ptr(struct iwl_priv
*priv
,
2765 struct iwl_tx_queue
*txq
, u16 byte_cnt
)
2768 int txq_id
= txq
->q
.id
;
2769 struct iwl_shared
*shared_data
= priv
->hw_setting
.shared_virt
;
2771 if (txq
->need_update
== 0)
2774 len
= byte_cnt
+ IWL_TX_CRC_SIZE
+ IWL_TX_DELIMITER_SIZE
;
2776 IWL_SET_BITS16(shared_data
->queues_byte_cnt_tbls
[txq_id
].
2777 tfd_offset
[txq
->q
.write_ptr
], byte_cnt
, len
);
2779 if (txq
->q
.write_ptr
< IWL4965_MAX_WIN_SIZE
)
2780 IWL_SET_BITS16(shared_data
->queues_byte_cnt_tbls
[txq_id
].
2781 tfd_offset
[IWL4965_QUEUE_SIZE
+ txq
->q
.write_ptr
],
2787 /* Set up Rx receiver/antenna/chain usage in "staging" RXON image.
2788 * This should not be used for scan command ... it puts data in wrong place. */
2789 void iwl4965_set_rxon_chain(struct iwl_priv
*priv
)
2791 u8 is_single
= is_single_stream(priv
);
2792 u8 idle_state
, rx_state
;
2794 priv
->staging_rxon
.rx_chain
= 0;
2795 rx_state
= idle_state
= 3;
2797 /* Tell uCode which antennas are actually connected.
2798 * Before first association, we assume all antennas are connected.
2799 * Just after first association, iwl4965_noise_calibration()
2800 * checks which antennas actually *are* connected. */
2801 priv
->staging_rxon
.rx_chain
|=
2802 cpu_to_le16(priv
->valid_antenna
<< RXON_RX_CHAIN_VALID_POS
);
2804 /* How many receivers should we use? */
2805 iwl4965_get_rx_chain_counter(priv
, &idle_state
, &rx_state
);
2806 priv
->staging_rxon
.rx_chain
|=
2807 cpu_to_le16(rx_state
<< RXON_RX_CHAIN_MIMO_CNT_POS
);
2808 priv
->staging_rxon
.rx_chain
|=
2809 cpu_to_le16(idle_state
<< RXON_RX_CHAIN_CNT_POS
);
2811 if (!is_single
&& (rx_state
>= 2) &&
2812 !test_bit(STATUS_POWER_PMI
, &priv
->status
))
2813 priv
->staging_rxon
.rx_chain
|= RXON_RX_CHAIN_MIMO_FORCE_MSK
;
2815 priv
->staging_rxon
.rx_chain
&= ~RXON_RX_CHAIN_MIMO_FORCE_MSK
;
2817 IWL_DEBUG_ASSOC("rx chain %X\n", priv
->staging_rxon
.rx_chain
);
2820 #ifdef CONFIG_IWLWIFI_HT
2821 #ifdef CONFIG_IWLWIFI_HT_AGG
2823 get the traffic load value for tid
2825 static u32
iwl4965_tl_get_load(struct iwl_priv
*priv
, u8 tid
)
2828 u32 current_time
= jiffies_to_msecs(jiffies
);
2831 unsigned long flags
;
2832 struct iwl_traffic_load
*tid_ptr
= NULL
;
2834 if (tid
>= TID_MAX_LOAD_COUNT
)
2837 tid_ptr
= &(priv
->lq_mngr
.agg_ctrl
.traffic_load
[tid
]);
2839 current_time
-= current_time
% TID_ROUND_VALUE
;
2841 spin_lock_irqsave(&priv
->lq_mngr
.lock
, flags
);
2842 if (!(tid_ptr
->queue_count
))
2845 time_diff
= TIME_WRAP_AROUND(tid_ptr
->time_stamp
, current_time
);
2846 index
= time_diff
/ TID_QUEUE_CELL_SPACING
;
2848 if (index
>= TID_QUEUE_MAX_SIZE
) {
2849 u32 oldest_time
= current_time
- TID_MAX_TIME_DIFF
;
2851 while (tid_ptr
->queue_count
&&
2852 (tid_ptr
->time_stamp
< oldest_time
)) {
2853 tid_ptr
->total
-= tid_ptr
->packet_count
[tid_ptr
->head
];
2854 tid_ptr
->packet_count
[tid_ptr
->head
] = 0;
2855 tid_ptr
->time_stamp
+= TID_QUEUE_CELL_SPACING
;
2856 tid_ptr
->queue_count
--;
2858 if (tid_ptr
->head
>= TID_QUEUE_MAX_SIZE
)
2862 load
= tid_ptr
->total
;
2865 spin_unlock_irqrestore(&priv
->lq_mngr
.lock
, flags
);
2870 increment traffic load value for tid and also remove
2871 any old values if passed the certian time period
2873 static void iwl4965_tl_add_packet(struct iwl_priv
*priv
, u8 tid
)
2875 u32 current_time
= jiffies_to_msecs(jiffies
);
2878 unsigned long flags
;
2879 struct iwl_traffic_load
*tid_ptr
= NULL
;
2881 if (tid
>= TID_MAX_LOAD_COUNT
)
2884 tid_ptr
= &(priv
->lq_mngr
.agg_ctrl
.traffic_load
[tid
]);
2886 current_time
-= current_time
% TID_ROUND_VALUE
;
2888 spin_lock_irqsave(&priv
->lq_mngr
.lock
, flags
);
2889 if (!(tid_ptr
->queue_count
)) {
2891 tid_ptr
->time_stamp
= current_time
;
2892 tid_ptr
->queue_count
= 1;
2894 tid_ptr
->packet_count
[0] = 1;
2898 time_diff
= TIME_WRAP_AROUND(tid_ptr
->time_stamp
, current_time
);
2899 index
= time_diff
/ TID_QUEUE_CELL_SPACING
;
2901 if (index
>= TID_QUEUE_MAX_SIZE
) {
2902 u32 oldest_time
= current_time
- TID_MAX_TIME_DIFF
;
2904 while (tid_ptr
->queue_count
&&
2905 (tid_ptr
->time_stamp
< oldest_time
)) {
2906 tid_ptr
->total
-= tid_ptr
->packet_count
[tid_ptr
->head
];
2907 tid_ptr
->packet_count
[tid_ptr
->head
] = 0;
2908 tid_ptr
->time_stamp
+= TID_QUEUE_CELL_SPACING
;
2909 tid_ptr
->queue_count
--;
2911 if (tid_ptr
->head
>= TID_QUEUE_MAX_SIZE
)
2916 index
= (tid_ptr
->head
+ index
) % TID_QUEUE_MAX_SIZE
;
2917 tid_ptr
->packet_count
[index
] = tid_ptr
->packet_count
[index
] + 1;
2918 tid_ptr
->total
= tid_ptr
->total
+ 1;
2920 if ((index
+ 1) > tid_ptr
->queue_count
)
2921 tid_ptr
->queue_count
= index
+ 1;
2923 spin_unlock_irqrestore(&priv
->lq_mngr
.lock
, flags
);
2927 #define MMAC_SCHED_MAX_NUMBER_OF_HT_BACK_FLOWS 7
2929 BA_STATUS_FAILURE
= 0,
2930 BA_STATUS_INITIATOR_DELBA
,
2931 BA_STATUS_RECIPIENT_DELBA
,
2932 BA_STATUS_RENEW_ADDBA_REQUEST
,
2936 static u8
iwl4964_tl_ba_avail(struct iwl_priv
*priv
)
2939 struct iwl_lq_mngr
*lq
;
2943 lq
= (struct iwl_lq_mngr
*)&(priv
->lq_mngr
);
2944 for (i
= 0; i
< TID_MAX_LOAD_COUNT
; i
++) {
2946 if ((lq
->agg_ctrl
.granted_ba
& msk
) ||
2947 (lq
->agg_ctrl
.wait_for_agg_status
& msk
))
2951 if (count
< MMAC_SCHED_MAX_NUMBER_OF_HT_BACK_FLOWS
)
2957 static void iwl4965_ba_status(struct iwl_priv
*priv
,
2958 u8 tid
, enum HT_STATUS status
);
2960 static int iwl4965_perform_addba(struct iwl_priv
*priv
, u8 tid
, u32 length
,
2965 rc
= ieee80211_start_BA_session(priv
->hw
, priv
->bssid
, tid
);
2967 iwl4965_ba_status(priv
, tid
, BA_STATUS_FAILURE
);
2972 static int iwl4965_perform_delba(struct iwl_priv
*priv
, u8 tid
)
2976 rc
= ieee80211_stop_BA_session(priv
->hw
, priv
->bssid
, tid
);
2978 iwl4965_ba_status(priv
, tid
, BA_STATUS_FAILURE
);
2983 static void iwl4965_turn_on_agg_for_tid(struct iwl_priv
*priv
,
2984 struct iwl_lq_mngr
*lq
,
2985 u8 auto_agg
, u8 tid
)
2987 u32 tid_msk
= (1 << tid
);
2988 unsigned long flags
;
2990 spin_lock_irqsave(&priv
->lq_mngr
.lock
, flags
);
2992 if ((auto_agg) && (!lq->enable_counter)){
2993 lq->agg_ctrl.next_retry = 0;
2994 lq->agg_ctrl.tid_retry = 0;
2995 spin_unlock_irqrestore(&priv->lq_mngr.lock, flags);
2999 if (!(lq
->agg_ctrl
.granted_ba
& tid_msk
) &&
3000 (lq
->agg_ctrl
.requested_ba
& tid_msk
)) {
3001 u8 available_queues
;
3004 spin_unlock_irqrestore(&priv
->lq_mngr
.lock
, flags
);
3005 available_queues
= iwl4964_tl_ba_avail(priv
);
3006 load
= iwl4965_tl_get_load(priv
, tid
);
3008 spin_lock_irqsave(&priv
->lq_mngr
.lock
, flags
);
3009 if (!available_queues
) {
3011 lq
->agg_ctrl
.tid_retry
|= tid_msk
;
3013 lq
->agg_ctrl
.requested_ba
&= ~tid_msk
;
3014 lq
->agg_ctrl
.wait_for_agg_status
&= ~tid_msk
;
3016 } else if ((auto_agg
) &&
3017 ((load
<= lq
->agg_ctrl
.tid_traffic_load_threshold
) ||
3018 ((lq
->agg_ctrl
.wait_for_agg_status
& tid_msk
))))
3019 lq
->agg_ctrl
.tid_retry
|= tid_msk
;
3021 lq
->agg_ctrl
.wait_for_agg_status
|= tid_msk
;
3022 spin_unlock_irqrestore(&priv
->lq_mngr
.lock
, flags
);
3023 iwl4965_perform_addba(priv
, tid
, 0x40,
3024 lq
->agg_ctrl
.ba_timeout
);
3025 spin_lock_irqsave(&priv
->lq_mngr
.lock
, flags
);
3028 spin_unlock_irqrestore(&priv
->lq_mngr
.lock
, flags
);
3031 static void iwl4965_turn_on_agg(struct iwl_priv
*priv
, u8 tid
)
3033 struct iwl_lq_mngr
*lq
;
3034 unsigned long flags
;
3036 lq
= (struct iwl_lq_mngr
*)&(priv
->lq_mngr
);
3038 if ((tid
< TID_MAX_LOAD_COUNT
))
3039 iwl4965_turn_on_agg_for_tid(priv
, lq
, lq
->agg_ctrl
.auto_agg
,
3041 else if (tid
== TID_ALL_SPECIFIED
) {
3042 if (lq
->agg_ctrl
.requested_ba
) {
3043 for (tid
= 0; tid
< TID_MAX_LOAD_COUNT
; tid
++)
3044 iwl4965_turn_on_agg_for_tid(priv
, lq
,
3045 lq
->agg_ctrl
.auto_agg
, tid
);
3047 spin_lock_irqsave(&priv
->lq_mngr
.lock
, flags
);
3048 lq
->agg_ctrl
.tid_retry
= 0;
3049 lq
->agg_ctrl
.next_retry
= 0;
3050 spin_unlock_irqrestore(&priv
->lq_mngr
.lock
, flags
);
3056 void iwl4965_turn_off_agg(struct iwl_priv
*priv
, u8 tid
)
3059 struct iwl_lq_mngr
*lq
;
3060 unsigned long flags
;
3062 lq
= (struct iwl_lq_mngr
*)&(priv
->lq_mngr
);
3064 if ((tid
< TID_MAX_LOAD_COUNT
)) {
3066 spin_lock_irqsave(&priv
->lq_mngr
.lock
, flags
);
3067 lq
->agg_ctrl
.wait_for_agg_status
|= tid_msk
;
3068 lq
->agg_ctrl
.requested_ba
&= ~tid_msk
;
3069 spin_unlock_irqrestore(&priv
->lq_mngr
.lock
, flags
);
3070 iwl4965_perform_delba(priv
, tid
);
3071 } else if (tid
== TID_ALL_SPECIFIED
) {
3072 spin_lock_irqsave(&priv
->lq_mngr
.lock
, flags
);
3073 for (tid
= 0; tid
< TID_MAX_LOAD_COUNT
; tid
++) {
3075 lq
->agg_ctrl
.wait_for_agg_status
|= tid_msk
;
3076 spin_unlock_irqrestore(&priv
->lq_mngr
.lock
, flags
);
3077 iwl4965_perform_delba(priv
, tid
);
3078 spin_lock_irqsave(&priv
->lq_mngr
.lock
, flags
);
3080 lq
->agg_ctrl
.requested_ba
= 0;
3081 spin_unlock_irqrestore(&priv
->lq_mngr
.lock
, flags
);
3085 static void iwl4965_ba_status(struct iwl_priv
*priv
,
3086 u8 tid
, enum HT_STATUS status
)
3088 struct iwl_lq_mngr
*lq
;
3089 u32 tid_msk
= (1 << tid
);
3090 unsigned long flags
;
3092 lq
= (struct iwl_lq_mngr
*)&(priv
->lq_mngr
);
3094 if ((tid
>= TID_MAX_LOAD_COUNT
))
3097 spin_lock_irqsave(&priv
->lq_mngr
.lock
, flags
);
3099 case BA_STATUS_ACTIVE
:
3100 if (!(lq
->agg_ctrl
.granted_ba
& tid_msk
))
3101 lq
->agg_ctrl
.granted_ba
|= tid_msk
;
3104 if ((lq
->agg_ctrl
.granted_ba
& tid_msk
))
3105 lq
->agg_ctrl
.granted_ba
&= ~tid_msk
;
3109 lq
->agg_ctrl
.wait_for_agg_status
&= ~tid_msk
;
3110 if (status
!= BA_STATUS_ACTIVE
) {
3111 if (lq
->agg_ctrl
.auto_agg
) {
3112 lq
->agg_ctrl
.tid_retry
|= tid_msk
;
3113 lq
->agg_ctrl
.next_retry
=
3114 jiffies
+ msecs_to_jiffies(500);
3116 lq
->agg_ctrl
.requested_ba
&= ~tid_msk
;
3118 spin_unlock_irqrestore(&priv
->lq_mngr
.lock
, flags
);
3123 static void iwl4965_bg_agg_work(struct work_struct
*work
)
3125 struct iwl_priv
*priv
= container_of(work
, struct iwl_priv
,
3131 unsigned long flags
;
3132 struct iwl_lq_mngr
*lq
= (struct iwl_lq_mngr
*)&(priv
->lq_mngr
);
3134 spin_lock_irqsave(&priv
->lq_mngr
.lock
, flags
);
3135 retry_tid
= lq
->agg_ctrl
.tid_retry
;
3136 lq
->agg_ctrl
.tid_retry
= 0;
3137 spin_unlock_irqrestore(&priv
->lq_mngr
.lock
, flags
);
3139 if (retry_tid
== TID_ALL_SPECIFIED
)
3140 iwl4965_turn_on_agg(priv
, TID_ALL_SPECIFIED
);
3142 for (tid
= 0; tid
< TID_MAX_LOAD_COUNT
; tid
++) {
3143 tid_msk
= (1 << tid
);
3144 if (retry_tid
& tid_msk
)
3145 iwl4965_turn_on_agg(priv
, tid
);
3149 spin_lock_irqsave(&priv
->lq_mngr
.lock
, flags
);
3150 if (lq
->agg_ctrl
.tid_retry
)
3151 lq
->agg_ctrl
.next_retry
= jiffies
+ msecs_to_jiffies(500);
3152 spin_unlock_irqrestore(&priv
->lq_mngr
.lock
, flags
);
3155 #endif /*CONFIG_IWLWIFI_HT_AGG */
3156 #endif /* CONFIG_IWLWIFI_HT */
3158 int iwl4965_tx_cmd(struct iwl_priv
*priv
, struct iwl_cmd
*out_cmd
,
3159 u8 sta_id
, dma_addr_t txcmd_phys
,
3160 struct ieee80211_hdr
*hdr
, u8 hdr_len
,
3161 struct ieee80211_tx_control
*ctrl
, void *sta_in
)
3163 struct iwl_tx_cmd cmd
;
3164 struct iwl_tx_cmd
*tx
= (struct iwl_tx_cmd
*)&out_cmd
->cmd
.payload
[0];
3165 dma_addr_t scratch_phys
;
3170 int rate_index
= min(ctrl
->tx_rate
& 0xffff, IWL_RATE_COUNT
- 1);
3171 #ifdef CONFIG_IWLWIFI_HT
3172 #ifdef CONFIG_IWLWIFI_HT_AGG
3174 #endif /*CONFIG_IWLWIFI_HT_AGG */
3175 #endif /* CONFIG_IWLWIFI_HT */
3177 unicast
= !is_multicast_ether_addr(hdr
->addr1
);
3179 fc
= le16_to_cpu(hdr
->frame_control
);
3180 if ((fc
& IEEE80211_FCTL_FTYPE
) != IEEE80211_FTYPE_DATA
)
3183 memcpy(&cmd
, &(out_cmd
->cmd
.tx
), sizeof(struct iwl_tx_cmd
));
3184 memset(tx
, 0, sizeof(struct iwl_tx_cmd
));
3185 memcpy(tx
->hdr
, hdr
, hdr_len
);
3188 tx
->driver_txop
= cmd
.driver_txop
;
3189 tx
->stop_time
.life_time
= cmd
.stop_time
.life_time
;
3190 tx
->tx_flags
= cmd
.tx_flags
;
3191 tx
->sta_id
= cmd
.sta_id
;
3192 tx
->tid_tspec
= cmd
.tid_tspec
;
3193 tx
->timeout
.pm_frame_timeout
= cmd
.timeout
.pm_frame_timeout
;
3194 tx
->next_frame_len
= cmd
.next_frame_len
;
3196 tx
->sec_ctl
= cmd
.sec_ctl
;
3197 memcpy(&(tx
->key
[0]), &(cmd
.key
[0]), 16);
3198 tx
->tx_flags
= cmd
.tx_flags
;
3200 tx
->rts_retry_limit
= cmd
.rts_retry_limit
;
3201 tx
->data_retry_limit
= cmd
.data_retry_limit
;
3203 scratch_phys
= txcmd_phys
+ sizeof(struct iwl_cmd_header
) +
3204 offsetof(struct iwl_tx_cmd
, scratch
);
3205 tx
->dram_lsb_ptr
= cpu_to_le32(scratch_phys
);
3206 tx
->dram_msb_ptr
= iwl4965_get_dma_hi_address(scratch_phys
);
3208 /* Hard coded to start at the highest retry fallback position
3209 * until the 4965 specific rate control algorithm is tied in */
3210 tx
->initial_rate_index
= LINK_QUAL_MAX_RETRY_NUM
- 1;
3212 /* Alternate between antenna A and B for successive frames */
3213 if (priv
->use_ant_b_for_management_frame
) {
3214 priv
->use_ant_b_for_management_frame
= 0;
3215 rate_flags
= RATE_MCS_ANT_B_MSK
;
3217 priv
->use_ant_b_for_management_frame
= 1;
3218 rate_flags
= RATE_MCS_ANT_A_MSK
;
3221 if (!unicast
|| !is_data
) {
3222 if ((rate_index
>= IWL_FIRST_CCK_RATE
) &&
3223 (rate_index
<= IWL_LAST_CCK_RATE
))
3224 rate_flags
|= RATE_MCS_CCK_MSK
;
3226 tx
->initial_rate_index
= 0;
3227 tx
->tx_flags
|= TX_CMD_FLG_STA_RATE_MSK
;
3230 tx
->rate_n_flags
= iwl_hw_set_rate_n_flags(iwl_rates
[rate_index
].plcp
,
3233 if (ieee80211_is_back_request(fc
))
3234 tx
->tx_flags
|= TX_CMD_FLG_ACK_MSK
|
3235 TX_CMD_FLG_IMM_BA_RSP_MASK
;
3236 #ifdef CONFIG_IWLWIFI_HT
3237 #ifdef CONFIG_IWLWIFI_HT_AGG
3238 qc
= ieee80211_get_qos_ctrl(hdr
);
3240 (priv
->iw_mode
!= IEEE80211_IF_TYPE_IBSS
)) {
3242 tid
= (u8
) (le16_to_cpu(*qc
) & 0xF);
3243 if (tid
< TID_MAX_LOAD_COUNT
)
3244 iwl4965_tl_add_packet(priv
, tid
);
3247 if (priv
->lq_mngr
.agg_ctrl
.next_retry
&&
3248 (time_after(priv
->lq_mngr
.agg_ctrl
.next_retry
, jiffies
))) {
3249 unsigned long flags
;
3251 spin_lock_irqsave(&priv
->lq_mngr
.lock
, flags
);
3252 priv
->lq_mngr
.agg_ctrl
.next_retry
= 0;
3253 spin_unlock_irqrestore(&priv
->lq_mngr
.lock
, flags
);
3254 schedule_work(&priv
->agg_work
);
3262 * sign_extend - Sign extend a value using specified bit as sign-bit
3264 * Example: sign_extend(9, 3) would return -7 as bit3 of 1001b is 1
3265 * and bit0..2 is 001b which when sign extended to 1111111111111001b is -7.
3267 * @param oper value to sign extend
3268 * @param index 0 based bit index (0<=index<32) to sign bit
3270 static s32
sign_extend(u32 oper
, int index
)
3272 u8 shift
= 31 - index
;
3274 return (s32
)(oper
<< shift
) >> shift
;
3278 * iwl4965_get_temperature - return the calibrated temperature (in Kelvin)
3279 * @statistics: Provides the temperature reading from the uCode
3281 * A return of <0 indicates bogus data in the statistics
3283 int iwl4965_get_temperature(const struct iwl_priv
*priv
)
3290 if (test_bit(STATUS_TEMPERATURE
, &priv
->status
) &&
3291 (priv
->statistics
.flag
& STATISTICS_REPLY_FLG_FAT_MODE_MSK
)) {
3292 IWL_DEBUG_TEMP("Running FAT temperature calibration\n");
3293 R1
= (s32
)le32_to_cpu(priv
->card_alive_init
.therm_r1
[1]);
3294 R2
= (s32
)le32_to_cpu(priv
->card_alive_init
.therm_r2
[1]);
3295 R3
= (s32
)le32_to_cpu(priv
->card_alive_init
.therm_r3
[1]);
3296 R4
= le32_to_cpu(priv
->card_alive_init
.therm_r4
[1]);
3298 IWL_DEBUG_TEMP("Running temperature calibration\n");
3299 R1
= (s32
)le32_to_cpu(priv
->card_alive_init
.therm_r1
[0]);
3300 R2
= (s32
)le32_to_cpu(priv
->card_alive_init
.therm_r2
[0]);
3301 R3
= (s32
)le32_to_cpu(priv
->card_alive_init
.therm_r3
[0]);
3302 R4
= le32_to_cpu(priv
->card_alive_init
.therm_r4
[0]);
3306 * Temperature is only 23 bits so sign extend out to 32
3308 * NOTE If we haven't received a statistics notification yet
3309 * with an updated temperature, use R4 provided to us in the
3310 * ALIVE response. */
3311 if (!test_bit(STATUS_TEMPERATURE
, &priv
->status
))
3312 vt
= sign_extend(R4
, 23);
3315 le32_to_cpu(priv
->statistics
.general
.temperature
), 23);
3317 IWL_DEBUG_TEMP("Calib values R[1-3]: %d %d %d R4: %d\n",
3321 IWL_ERROR("Calibration conflict R1 == R3\n");
3325 /* Calculate temperature in degrees Kelvin, adjust by 97%.
3326 * Add offset to center the adjustment around 0 degrees Centigrade. */
3327 temperature
= TEMPERATURE_CALIB_A_VAL
* (vt
- R2
);
3328 temperature
/= (R3
- R1
);
3329 temperature
= (temperature
* 97) / 100 +
3330 TEMPERATURE_CALIB_KELVIN_OFFSET
;
3332 IWL_DEBUG_TEMP("Calibrated temperature: %dK, %dC\n", temperature
,
3333 KELVIN_TO_CELSIUS(temperature
));
3338 /* Adjust Txpower only if temperature variance is greater than threshold. */
3339 #define IWL_TEMPERATURE_THRESHOLD 3
3342 * iwl4965_is_temp_calib_needed - determines if new calibration is needed
3344 * If the temperature changed has changed sufficiently, then a recalibration
3347 * Assumes caller will replace priv->last_temperature once calibration
3350 static int iwl4965_is_temp_calib_needed(struct iwl_priv
*priv
)
3354 if (!test_bit(STATUS_STATISTICS
, &priv
->status
)) {
3355 IWL_DEBUG_TEMP("Temperature not updated -- no statistics.\n");
3359 temp_diff
= priv
->temperature
- priv
->last_temperature
;
3361 /* get absolute value */
3362 if (temp_diff
< 0) {
3363 IWL_DEBUG_POWER("Getting cooler, delta %d, \n", temp_diff
);
3364 temp_diff
= -temp_diff
;
3365 } else if (temp_diff
== 0)
3366 IWL_DEBUG_POWER("Same temp, \n");
3368 IWL_DEBUG_POWER("Getting warmer, delta %d, \n", temp_diff
);
3370 if (temp_diff
< IWL_TEMPERATURE_THRESHOLD
) {
3371 IWL_DEBUG_POWER("Thermal txpower calib not needed\n");
3375 IWL_DEBUG_POWER("Thermal txpower calib needed\n");
3380 /* Calculate noise level, based on measurements during network silence just
3381 * before arriving beacon. This measurement can be done only if we know
3382 * exactly when to expect beacons, therefore only when we're associated. */
3383 static void iwl4965_rx_calc_noise(struct iwl_priv
*priv
)
3385 struct statistics_rx_non_phy
*rx_info
3386 = &(priv
->statistics
.rx
.general
);
3387 int num_active_rx
= 0;
3388 int total_silence
= 0;
3390 le32_to_cpu(rx_info
->beacon_silence_rssi_a
) & IN_BAND_FILTER
;
3392 le32_to_cpu(rx_info
->beacon_silence_rssi_b
) & IN_BAND_FILTER
;
3394 le32_to_cpu(rx_info
->beacon_silence_rssi_c
) & IN_BAND_FILTER
;
3396 if (bcn_silence_a
) {
3397 total_silence
+= bcn_silence_a
;
3400 if (bcn_silence_b
) {
3401 total_silence
+= bcn_silence_b
;
3404 if (bcn_silence_c
) {
3405 total_silence
+= bcn_silence_c
;
3409 /* Average among active antennas */
3411 priv
->last_rx_noise
= (total_silence
/ num_active_rx
) - 107;
3413 priv
->last_rx_noise
= IWL_NOISE_MEAS_NOT_AVAILABLE
;
3415 IWL_DEBUG_CALIB("inband silence a %u, b %u, c %u, dBm %d\n",
3416 bcn_silence_a
, bcn_silence_b
, bcn_silence_c
,
3417 priv
->last_rx_noise
);
3420 void iwl_hw_rx_statistics(struct iwl_priv
*priv
, struct iwl_rx_mem_buffer
*rxb
)
3422 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3426 IWL_DEBUG_RX("Statistics notification received (%d vs %d).\n",
3427 (int)sizeof(priv
->statistics
), pkt
->len
);
3429 change
= ((priv
->statistics
.general
.temperature
!=
3430 pkt
->u
.stats
.general
.temperature
) ||
3431 ((priv
->statistics
.flag
&
3432 STATISTICS_REPLY_FLG_FAT_MODE_MSK
) !=
3433 (pkt
->u
.stats
.flag
& STATISTICS_REPLY_FLG_FAT_MODE_MSK
)));
3435 memcpy(&priv
->statistics
, &pkt
->u
.stats
, sizeof(priv
->statistics
));
3437 set_bit(STATUS_STATISTICS
, &priv
->status
);
3439 /* Reschedule the statistics timer to occur in
3440 * REG_RECALIB_PERIOD seconds to ensure we get a
3441 * thermal update even if the uCode doesn't give
3443 mod_timer(&priv
->statistics_periodic
, jiffies
+
3444 msecs_to_jiffies(REG_RECALIB_PERIOD
* 1000));
3446 if (unlikely(!test_bit(STATUS_SCANNING
, &priv
->status
)) &&
3447 (pkt
->hdr
.cmd
== STATISTICS_NOTIFICATION
)) {
3448 iwl4965_rx_calc_noise(priv
);
3449 #ifdef CONFIG_IWLWIFI_SENSITIVITY
3450 queue_work(priv
->workqueue
, &priv
->sensitivity_work
);
3454 /* If the hardware hasn't reported a change in
3455 * temperature then don't bother computing a
3456 * calibrated temperature value */
3460 temp
= iwl4965_get_temperature(priv
);
3464 if (priv
->temperature
!= temp
) {
3465 if (priv
->temperature
)
3466 IWL_DEBUG_TEMP("Temperature changed "
3467 "from %dC to %dC\n",
3468 KELVIN_TO_CELSIUS(priv
->temperature
),
3469 KELVIN_TO_CELSIUS(temp
));
3471 IWL_DEBUG_TEMP("Temperature "
3472 "initialized to %dC\n",
3473 KELVIN_TO_CELSIUS(temp
));
3476 priv
->temperature
= temp
;
3477 set_bit(STATUS_TEMPERATURE
, &priv
->status
);
3479 if (unlikely(!test_bit(STATUS_SCANNING
, &priv
->status
)) &&
3480 iwl4965_is_temp_calib_needed(priv
))
3481 queue_work(priv
->workqueue
, &priv
->txpower_work
);
3484 static void iwl4965_handle_data_packet(struct iwl_priv
*priv
, int is_data
,
3486 struct iwl_rx_mem_buffer
*rxb
,
3487 struct ieee80211_rx_status
*stats
)
3489 struct iwl_rx_packet
*pkt
= (struct iwl_rx_packet
*)rxb
->skb
->data
;
3490 struct iwl4965_rx_phy_res
*rx_start
= (include_phy
) ?
3491 (struct iwl4965_rx_phy_res
*)&(pkt
->u
.raw
[0]) : NULL
;
3492 struct ieee80211_hdr
*hdr
;
3495 unsigned int skblen
;
3498 if (!include_phy
&& priv
->last_phy_res
[0])
3499 rx_start
= (struct iwl4965_rx_phy_res
*)&priv
->last_phy_res
[1];
3502 IWL_ERROR("MPDU frame without a PHY data\n");
3506 hdr
= (struct ieee80211_hdr
*)((u8
*) & rx_start
[1] +
3507 rx_start
->cfg_phy_cnt
);
3509 len
= le16_to_cpu(rx_start
->byte_count
);
3511 rx_end
= (__le32
*) ((u8
*) & pkt
->u
.raw
[0] +
3512 sizeof(struct iwl4965_rx_phy_res
) +
3513 rx_start
->cfg_phy_cnt
+ len
);
3516 struct iwl4965_rx_mpdu_res_start
*amsdu
=
3517 (struct iwl4965_rx_mpdu_res_start
*)pkt
->u
.raw
;
3519 hdr
= (struct ieee80211_hdr
*)(pkt
->u
.raw
+
3520 sizeof(struct iwl4965_rx_mpdu_res_start
));
3521 len
= le16_to_cpu(amsdu
->byte_count
);
3522 rx_start
->byte_count
= amsdu
->byte_count
;
3523 rx_end
= (__le32
*) (((u8
*) hdr
) + len
);
3525 if (len
> 2342 || len
< 16) {
3526 IWL_DEBUG_DROP("byte count out of range [16,2342]"
3531 ampdu_status
= le32_to_cpu(*rx_end
);
3532 skblen
= ((u8
*) rx_end
- (u8
*) & pkt
->u
.raw
[0]) + sizeof(u32
);
3534 /* start from MAC */
3535 skb_reserve(rxb
->skb
, (void *)hdr
- (void *)pkt
);
3536 skb_put(rxb
->skb
, len
); /* end where data ends */
3538 /* We only process data packets if the interface is open */
3539 if (unlikely(!priv
->is_open
)) {
3540 IWL_DEBUG_DROP_LIMIT
3541 ("Dropping packet while interface is not open.\n");
3545 if (priv
->iw_mode
== IEEE80211_IF_TYPE_MNTR
) {
3546 if (iwl_param_hwcrypto
)
3547 iwl_set_decrypted_flag(priv
, rxb
->skb
,
3548 ampdu_status
, stats
);
3549 iwl_handle_data_packet_monitor(priv
, rxb
, hdr
, len
, stats
, 0);
3554 hdr
= (struct ieee80211_hdr
*)rxb
->skb
->data
;
3556 if (iwl_param_hwcrypto
)
3557 iwl_set_decrypted_flag(priv
, rxb
->skb
, ampdu_status
, stats
);
3559 ieee80211_rx_irqsafe(priv
->hw
, rxb
->skb
, stats
);
3560 priv
->alloc_rxb_skb
--;
3563 priv
->led_packets
+= len
;
3564 iwl_setup_activity_timer(priv
);
3568 /* Calc max signal level (dBm) among 3 possible receivers */
3569 static int iwl4965_calc_rssi(struct iwl4965_rx_phy_res
*rx_resp
)
3571 /* data from PHY/DSP regarding signal strength, etc.,
3572 * contents are always there, not configurable by host. */
3573 struct iwl4965_rx_non_cfg_phy
*ncphy
=
3574 (struct iwl4965_rx_non_cfg_phy
*)rx_resp
->non_cfg_phy
;
3575 u32 agc
= (le16_to_cpu(ncphy
->agc_info
) & IWL_AGC_DB_MASK
)
3578 u32 valid_antennae
=
3579 (le16_to_cpu(rx_resp
->phy_flags
) & RX_PHY_FLAGS_ANTENNAE_MASK
)
3580 >> RX_PHY_FLAGS_ANTENNAE_OFFSET
;
3584 /* Find max rssi among 3 possible receivers.
3585 * These values are measured by the digital signal processor (DSP).
3586 * They should stay fairly constant even as the signal strength varies,
3587 * if the radio's automatic gain control (AGC) is working right.
3588 * AGC value (see below) will provide the "interesting" info. */
3589 for (i
= 0; i
< 3; i
++)
3590 if (valid_antennae
& (1 << i
))
3591 max_rssi
= max(ncphy
->rssi_info
[i
<< 1], max_rssi
);
3593 IWL_DEBUG_STATS("Rssi In A %d B %d C %d Max %d AGC dB %d\n",
3594 ncphy
->rssi_info
[0], ncphy
->rssi_info
[2], ncphy
->rssi_info
[4],
3597 /* dBm = max_rssi dB - agc dB - constant.
3598 * Higher AGC (higher radio gain) means lower signal. */
3599 return (max_rssi
- agc
- IWL_RSSI_OFFSET
);
3602 #ifdef CONFIG_IWLWIFI_HT
3604 /* Parsed Information Elements */
3605 struct ieee802_11_elems
{
3615 u8 ht_cap_param_len
;
3617 u8 ht_extra_param_len
;
3620 static int parse_elems(u8
*start
, size_t len
, struct ieee802_11_elems
*elems
)
3626 memset(elems
, 0, sizeof(*elems
));
3639 case WLAN_EID_DS_PARAMS
:
3640 elems
->ds_params
= pos
;
3641 elems
->ds_params_len
= elen
;
3645 elems
->tim_len
= elen
;
3647 case WLAN_EID_IBSS_PARAMS
:
3648 elems
->ibss_params
= pos
;
3649 elems
->ibss_params_len
= elen
;
3651 case WLAN_EID_ERP_INFO
:
3652 elems
->erp_info
= pos
;
3653 elems
->erp_info_len
= elen
;
3655 case WLAN_EID_HT_CAPABILITY
:
3656 elems
->ht_cap_param
= pos
;
3657 elems
->ht_cap_param_len
= elen
;
3659 case WLAN_EID_HT_EXTRA_INFO
:
3660 elems
->ht_extra_param
= pos
;
3661 elems
->ht_extra_param_len
= elen
;
3674 #endif /* CONFIG_IWLWIFI_HT */
3676 static void iwl4965_sta_modify_ps_wake(struct iwl_priv
*priv
, int sta_id
)
3678 unsigned long flags
;
3680 spin_lock_irqsave(&priv
->sta_lock
, flags
);
3681 priv
->stations
[sta_id
].sta
.station_flags
&= ~STA_FLG_PWR_SAVE_MSK
;
3682 priv
->stations
[sta_id
].sta
.station_flags_msk
= STA_FLG_PWR_SAVE_MSK
;
3683 priv
->stations
[sta_id
].sta
.sta
.modify_mask
= 0;
3684 priv
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
3685 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
3687 iwl_send_add_station(priv
, &priv
->stations
[sta_id
].sta
, CMD_ASYNC
);
3690 static void iwl4965_update_ps_mode(struct iwl_priv
*priv
, u16 ps_bit
, u8
*addr
)
3692 /* FIXME: need locking over ps_status ??? */
3693 u8 sta_id
= iwl_hw_find_station(priv
, addr
);
3695 if (sta_id
!= IWL_INVALID_STATION
) {
3696 u8 sta_awake
= priv
->stations
[sta_id
].
3697 ps_status
== STA_PS_STATUS_WAKE
;
3699 if (sta_awake
&& ps_bit
)
3700 priv
->stations
[sta_id
].ps_status
= STA_PS_STATUS_SLEEP
;
3701 else if (!sta_awake
&& !ps_bit
) {
3702 iwl4965_sta_modify_ps_wake(priv
, sta_id
);
3703 priv
->stations
[sta_id
].ps_status
= STA_PS_STATUS_WAKE
;
3708 /* Called for REPLY_4965_RX (legacy ABG frames), or
3709 * REPLY_RX_MPDU_CMD (HT high-throughput N frames). */
3710 static void iwl4965_rx_reply_rx(struct iwl_priv
*priv
,
3711 struct iwl_rx_mem_buffer
*rxb
)
3713 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3714 /* Use phy data (Rx signal strength, etc.) contained within
3715 * this rx packet for legacy frames,
3716 * or phy data cached from REPLY_RX_PHY_CMD for HT frames. */
3717 int include_phy
= (pkt
->hdr
.cmd
== REPLY_4965_RX
);
3718 struct iwl4965_rx_phy_res
*rx_start
= (include_phy
) ?
3719 (struct iwl4965_rx_phy_res
*)&(pkt
->u
.raw
[0]) :
3720 (struct iwl4965_rx_phy_res
*)&priv
->last_phy_res
[1];
3722 unsigned int len
= 0;
3723 struct ieee80211_hdr
*header
;
3725 struct ieee80211_rx_status stats
= {
3726 .mactime
= le64_to_cpu(rx_start
->timestamp
),
3727 .channel
= le16_to_cpu(rx_start
->channel
),
3729 (rx_start
->phy_flags
& RX_RES_PHY_FLAGS_BAND_24_MSK
) ?
3730 MODE_IEEE80211G
: MODE_IEEE80211A
,
3732 .rate
= iwl_hw_get_rate(rx_start
->rate_n_flags
),
3734 #ifdef CONFIG_IWLWIFI_HT_AGG
3736 #endif /* CONFIG_IWLWIFI_HT_AGG */
3740 if ((unlikely(rx_start
->cfg_phy_cnt
> 20))) {
3742 ("dsp size out of range [0,20]: "
3743 "%d/n", rx_start
->cfg_phy_cnt
);
3747 if (priv
->last_phy_res
[0])
3748 rx_start
= (struct iwl4965_rx_phy_res
*)
3749 &priv
->last_phy_res
[1];
3755 IWL_ERROR("MPDU frame without a PHY data\n");
3760 header
= (struct ieee80211_hdr
*)((u8
*) & rx_start
[1]
3761 + rx_start
->cfg_phy_cnt
);
3763 len
= le16_to_cpu(rx_start
->byte_count
);
3764 rx_end
= (__le32
*) (pkt
->u
.raw
+ rx_start
->cfg_phy_cnt
+
3765 sizeof(struct iwl4965_rx_phy_res
) + len
);
3767 struct iwl4965_rx_mpdu_res_start
*amsdu
=
3768 (struct iwl4965_rx_mpdu_res_start
*)pkt
->u
.raw
;
3770 header
= (void *)(pkt
->u
.raw
+
3771 sizeof(struct iwl4965_rx_mpdu_res_start
));
3772 len
= le16_to_cpu(amsdu
->byte_count
);
3773 rx_end
= (__le32
*) (pkt
->u
.raw
+
3774 sizeof(struct iwl4965_rx_mpdu_res_start
) + len
);
3777 if (!(*rx_end
& RX_RES_STATUS_NO_CRC32_ERROR
) ||
3778 !(*rx_end
& RX_RES_STATUS_NO_RXE_OVERFLOW
)) {
3779 IWL_DEBUG_RX("Bad CRC or FIFO: 0x%08X.\n",
3780 le32_to_cpu(*rx_end
));
3784 priv
->ucode_beacon_time
= le32_to_cpu(rx_start
->beacon_time_stamp
);
3786 stats
.freq
= ieee80211chan2mhz(stats
.channel
);
3788 /* Find max signal strength (dBm) among 3 antenna/receiver chains */
3789 stats
.ssi
= iwl4965_calc_rssi(rx_start
);
3791 /* Meaningful noise values are available only from beacon statistics,
3792 * which are gathered only when associated, and indicate noise
3793 * only for the associated network channel ...
3794 * Ignore these noise values while scanning (other channels) */
3795 if (iwl_is_associated(priv
) &&
3796 !test_bit(STATUS_SCANNING
, &priv
->status
)) {
3797 stats
.noise
= priv
->last_rx_noise
;
3798 stats
.signal
= iwl_calc_sig_qual(stats
.ssi
, stats
.noise
);
3800 stats
.noise
= IWL_NOISE_MEAS_NOT_AVAILABLE
;
3801 stats
.signal
= iwl_calc_sig_qual(stats
.ssi
, 0);
3804 /* Reset beacon noise level if not associated. */
3805 if (!iwl_is_associated(priv
))
3806 priv
->last_rx_noise
= IWL_NOISE_MEAS_NOT_AVAILABLE
;
3808 #ifdef CONFIG_IWLWIFI_DEBUG
3809 /* TODO: Parts of iwl_report_frame are broken for 4965 */
3810 if (iwl_debug_level
& (IWL_DL_RX
))
3811 /* Set "1" to report good data frames in groups of 100 */
3812 iwl_report_frame(priv
, pkt
, header
, 1);
3814 if (iwl_debug_level
& (IWL_DL_RX
| IWL_DL_STATS
))
3815 IWL_DEBUG_RX("Rssi %d, noise %d, qual %d, TSF %lu\n",
3816 stats
.ssi
, stats
.noise
, stats
.signal
,
3817 (long unsigned int)le64_to_cpu(rx_start
->timestamp
));
3820 network_packet
= iwl_is_network_packet(priv
, header
);
3821 if (network_packet
) {
3822 priv
->last_rx_rssi
= stats
.ssi
;
3823 priv
->last_beacon_time
= priv
->ucode_beacon_time
;
3824 priv
->last_tsf
= le64_to_cpu(rx_start
->timestamp
);
3827 fc
= le16_to_cpu(header
->frame_control
);
3828 switch (fc
& IEEE80211_FCTL_FTYPE
) {
3829 case IEEE80211_FTYPE_MGMT
:
3831 if (priv
->iw_mode
== IEEE80211_IF_TYPE_AP
)
3832 iwl4965_update_ps_mode(priv
, fc
& IEEE80211_FCTL_PM
,
3834 switch (fc
& IEEE80211_FCTL_STYPE
) {
3835 case IEEE80211_STYPE_PROBE_RESP
:
3836 case IEEE80211_STYPE_BEACON
:
3837 if ((priv
->iw_mode
== IEEE80211_IF_TYPE_STA
&&
3838 !compare_ether_addr(header
->addr2
, priv
->bssid
)) ||
3839 (priv
->iw_mode
== IEEE80211_IF_TYPE_IBSS
&&
3840 !compare_ether_addr(header
->addr3
, priv
->bssid
))) {
3841 struct ieee80211_mgmt
*mgmt
=
3842 (struct ieee80211_mgmt
*)header
;
3844 le64_to_cpu(mgmt
->u
.beacon
.timestamp
);
3846 priv
->timestamp0
= timestamp
& 0xFFFFFFFF;
3848 (timestamp
>> 32) & 0xFFFFFFFF;
3849 priv
->beacon_int
= le16_to_cpu(
3850 mgmt
->u
.beacon
.beacon_int
);
3851 if (priv
->call_post_assoc_from_beacon
&&
3852 (priv
->iw_mode
== IEEE80211_IF_TYPE_STA
)) {
3853 priv
->call_post_assoc_from_beacon
= 0;
3854 queue_work(priv
->workqueue
,
3855 &priv
->post_associate
.work
);
3860 case IEEE80211_STYPE_ACTION
:
3864 * TODO: There is no callback function from upper
3865 * stack to inform us when associated status. this
3866 * work around to sniff assoc_resp management frame
3867 * and finish the association process.
3869 case IEEE80211_STYPE_ASSOC_RESP
:
3870 case IEEE80211_STYPE_REASSOC_RESP
:
3871 if (network_packet
) {
3872 #ifdef CONFIG_IWLWIFI_HT
3874 struct ieee802_11_elems elems
;
3875 #endif /*CONFIG_IWLWIFI_HT */
3876 struct ieee80211_mgmt
*mgnt
=
3877 (struct ieee80211_mgmt
*)header
;
3879 priv
->assoc_id
= (~((1 << 15) | (1 << 14))
3880 & le16_to_cpu(mgnt
->u
.assoc_resp
.aid
));
3881 priv
->assoc_capability
=
3883 mgnt
->u
.assoc_resp
.capab_info
);
3884 #ifdef CONFIG_IWLWIFI_HT
3885 pos
= mgnt
->u
.assoc_resp
.variable
;
3886 if (!parse_elems(pos
,
3887 len
- (pos
- (u8
*) mgnt
),
3889 if (elems
.ht_extra_param
&&
3893 #endif /*CONFIG_IWLWIFI_HT */
3894 /* assoc_id is 0 no association */
3895 if (!priv
->assoc_id
)
3897 if (priv
->beacon_int
)
3898 queue_work(priv
->workqueue
,
3899 &priv
->post_associate
.work
);
3901 priv
->call_post_assoc_from_beacon
= 1;
3906 case IEEE80211_STYPE_PROBE_REQ
:
3907 if ((priv
->iw_mode
== IEEE80211_IF_TYPE_IBSS
) &&
3908 !iwl_is_associated(priv
)) {
3909 DECLARE_MAC_BUF(mac1
);
3910 DECLARE_MAC_BUF(mac2
);
3911 DECLARE_MAC_BUF(mac3
);
3913 IWL_DEBUG_DROP("Dropping (non network): "
3915 print_mac(mac1
, header
->addr1
),
3916 print_mac(mac2
, header
->addr2
),
3917 print_mac(mac3
, header
->addr3
));
3921 iwl4965_handle_data_packet(priv
, 0, include_phy
, rxb
, &stats
);
3924 case IEEE80211_FTYPE_CTL
:
3925 #ifdef CONFIG_IWLWIFI_HT_AGG
3926 switch (fc
& IEEE80211_FCTL_STYPE
) {
3927 case IEEE80211_STYPE_BACK_REQ
:
3928 IWL_DEBUG_HT("IEEE80211_STYPE_BACK_REQ arrived\n");
3929 iwl4965_handle_data_packet(priv
, 0, include_phy
,
3939 case IEEE80211_FTYPE_DATA
: {
3940 DECLARE_MAC_BUF(mac1
);
3941 DECLARE_MAC_BUF(mac2
);
3942 DECLARE_MAC_BUF(mac3
);
3944 if (priv
->iw_mode
== IEEE80211_IF_TYPE_AP
)
3945 iwl4965_update_ps_mode(priv
, fc
& IEEE80211_FCTL_PM
,
3948 if (unlikely(!network_packet
))
3949 IWL_DEBUG_DROP("Dropping (non network): "
3951 print_mac(mac1
, header
->addr1
),
3952 print_mac(mac2
, header
->addr2
),
3953 print_mac(mac3
, header
->addr3
));
3954 else if (unlikely(is_duplicate_packet(priv
, header
)))
3955 IWL_DEBUG_DROP("Dropping (dup): %s, %s, %s\n",
3956 print_mac(mac1
, header
->addr1
),
3957 print_mac(mac2
, header
->addr2
),
3958 print_mac(mac3
, header
->addr3
));
3960 iwl4965_handle_data_packet(priv
, 1, include_phy
, rxb
,
3970 /* Cache phy data (Rx signal strength, etc) for HT frame (REPLY_RX_PHY_CMD).
3971 * This will be used later in iwl4965_rx_reply_rx() for REPLY_RX_MPDU_CMD. */
3972 static void iwl4965_rx_reply_rx_phy(struct iwl_priv
*priv
,
3973 struct iwl_rx_mem_buffer
*rxb
)
3975 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3976 priv
->last_phy_res
[0] = 1;
3977 memcpy(&priv
->last_phy_res
[1], &(pkt
->u
.raw
[0]),
3978 sizeof(struct iwl4965_rx_phy_res
));
3981 static void iwl4965_rx_missed_beacon_notif(struct iwl_priv
*priv
,
3982 struct iwl_rx_mem_buffer
*rxb
)
3985 #ifdef CONFIG_IWLWIFI_SENSITIVITY
3986 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3987 struct iwl_missed_beacon_notif
*missed_beacon
;
3989 missed_beacon
= &pkt
->u
.missed_beacon
;
3990 if (le32_to_cpu(missed_beacon
->consequtive_missed_beacons
) > 5) {
3991 IWL_DEBUG_CALIB("missed bcn cnsq %d totl %d rcd %d expctd %d\n",
3992 le32_to_cpu(missed_beacon
->consequtive_missed_beacons
),
3993 le32_to_cpu(missed_beacon
->total_missed_becons
),
3994 le32_to_cpu(missed_beacon
->num_recvd_beacons
),
3995 le32_to_cpu(missed_beacon
->num_expected_beacons
));
3996 priv
->sensitivity_data
.state
= IWL_SENS_CALIB_NEED_REINIT
;
3997 if (unlikely(!test_bit(STATUS_SCANNING
, &priv
->status
)))
3998 queue_work(priv
->workqueue
, &priv
->sensitivity_work
);
4000 #endif /*CONFIG_IWLWIFI_SENSITIVITY*/
4003 #ifdef CONFIG_IWLWIFI_HT
4004 #ifdef CONFIG_IWLWIFI_HT_AGG
4006 static void iwl4965_set_tx_status(struct iwl_priv
*priv
, int txq_id
, int idx
,
4007 u32 status
, u32 retry_count
, u32 rate
)
4009 struct ieee80211_tx_status
*tx_status
=
4010 &(priv
->txq
[txq_id
].txb
[idx
].status
);
4012 tx_status
->flags
= status
? IEEE80211_TX_STATUS_ACK
: 0;
4013 tx_status
->retry_count
+= retry_count
;
4014 tx_status
->control
.tx_rate
= rate
;
4018 static void iwl_sta_modify_enable_tid_tx(struct iwl_priv
*priv
,
4019 int sta_id
, int tid
)
4021 unsigned long flags
;
4023 spin_lock_irqsave(&priv
->sta_lock
, flags
);
4024 priv
->stations
[sta_id
].sta
.sta
.modify_mask
= STA_MODIFY_TID_DISABLE_TX
;
4025 priv
->stations
[sta_id
].sta
.tid_disable_tx
&= cpu_to_le16(~(1 << tid
));
4026 priv
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
4027 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
4029 iwl_send_add_station(priv
, &priv
->stations
[sta_id
].sta
, CMD_ASYNC
);
4033 static int iwl4965_tx_status_reply_compressed_ba(struct iwl_priv
*priv
,
4034 struct iwl_ht_agg
*agg
,
4035 struct iwl_compressed_ba_resp
*
4040 u16 ba_seq_ctl
= le16_to_cpu(ba_resp
->ba_seq_ctl
);
4041 u32 bitmap0
, bitmap1
;
4042 u32 resp_bitmap0
= le32_to_cpu(ba_resp
->ba_bitmap0
);
4043 u32 resp_bitmap1
= le32_to_cpu(ba_resp
->ba_bitmap1
);
4045 if (unlikely(!agg
->wait_for_ba
)) {
4046 IWL_ERROR("Received BA when not expected\n");
4049 agg
->wait_for_ba
= 0;
4050 IWL_DEBUG_TX_REPLY("BA %d %d\n", agg
->start_idx
, ba_resp
->ba_seq_ctl
);
4051 sh
= agg
->start_idx
- SEQ_TO_INDEX(ba_seq_ctl
>>4);
4052 if (sh
< 0) /* tbw something is wrong with indices */
4055 /* don't use 64 bits for now */
4056 bitmap0
= resp_bitmap0
>> sh
;
4057 bitmap1
= resp_bitmap1
>> sh
;
4058 bitmap0
|= (resp_bitmap1
& ((1<<sh
)|((1<<sh
)-1))) << (32 - sh
);
4060 if (agg
->frame_count
> (64 - sh
)) {
4061 IWL_DEBUG_TX_REPLY("more frames than bitmap size");
4065 /* check for success or failure according to the
4066 * transmitted bitmap and back bitmap */
4067 bitmap0
&= agg
->bitmap0
;
4068 bitmap1
&= agg
->bitmap1
;
4070 for (i
= 0; i
< agg
->frame_count
; i
++) {
4071 int idx
= (agg
->start_idx
+ i
) & 0xff;
4072 ack
= bitmap0
& (1 << i
);
4073 IWL_DEBUG_TX_REPLY("%s ON i=%d idx=%d raw=%d\n",
4074 ack
? "ACK":"NACK", i
, idx
, agg
->start_idx
+ i
);
4075 iwl4965_set_tx_status(priv
, agg
->txq_id
, idx
, ack
, 0,
4080 IWL_DEBUG_TX_REPLY("Bitmap %x%x\n", bitmap0
, bitmap1
);
4085 static inline int iwl_queue_dec_wrap(int index
, int n_bd
)
4087 return (index
== 0) ? n_bd
- 1 : index
- 1;
4090 static void iwl4965_rx_reply_compressed_ba(struct iwl_priv
*priv
,
4091 struct iwl_rx_mem_buffer
*rxb
)
4093 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
4094 struct iwl_compressed_ba_resp
*ba_resp
= &pkt
->u
.compressed_ba
;
4096 struct iwl_tx_queue
*txq
= NULL
;
4097 struct iwl_ht_agg
*agg
;
4098 u16 ba_resp_scd_flow
= le16_to_cpu(ba_resp
->scd_flow
);
4099 u16 ba_resp_scd_ssn
= le16_to_cpu(ba_resp
->scd_ssn
);
4101 if (ba_resp_scd_flow
>= ARRAY_SIZE(priv
->txq
)) {
4102 IWL_ERROR("BUG_ON scd_flow is bigger than number of queues");
4106 txq
= &priv
->txq
[ba_resp_scd_flow
];
4107 agg
= &priv
->stations
[ba_resp
->sta_id
].tid
[ba_resp
->tid
].agg
;
4108 index
= iwl_queue_dec_wrap(ba_resp_scd_ssn
& 0xff, txq
->q
.n_bd
);
4110 /* TODO: Need to get this copy more safely - now good for debug */
4113 DECLARE_MAC_BUF(mac);
4114 IWL_DEBUG_TX_REPLY("REPLY_COMPRESSED_BA [%d]Received from %s, "
4117 print_mac(mac, (u8*) &ba_resp->sta_addr_lo32),
4119 IWL_DEBUG_TX_REPLY("TID = %d, SeqCtl = %d, bitmap = 0x%X%X, scd_flow = "
4120 "%d, scd_ssn = %d\n",
4122 ba_resp->ba_seq_ctl,
4123 ba_resp->ba_bitmap1,
4124 ba_resp->ba_bitmap0,
4127 IWL_DEBUG_TX_REPLY("DAT start_idx = %d, bitmap = 0x%X%X \n",
4133 iwl4965_tx_status_reply_compressed_ba(priv
, agg
, ba_resp
);
4134 /* releases all the TFDs until the SSN */
4135 if (txq
->q
.read_ptr
!= (ba_resp_scd_ssn
& 0xff))
4136 iwl_tx_queue_reclaim(priv
, ba_resp_scd_flow
, index
);
4141 static void iwl4965_tx_queue_stop_scheduler(struct iwl_priv
*priv
, u16 txq_id
)
4143 iwl_write_restricted_reg(priv
,
4144 SCD_QUEUE_STATUS_BITS(txq_id
),
4145 (0 << SCD_QUEUE_STTS_REG_POS_ACTIVE
)|
4146 (1 << SCD_QUEUE_STTS_REG_POS_SCD_ACT_EN
));
4149 static int iwl4965_tx_queue_set_q2ratid(struct iwl_priv
*priv
, u16 ra_tid
,
4156 scd_q2ratid
= ra_tid
& SCD_QUEUE_RA_TID_MAP_RATID_MSK
;
4158 tbl_dw_addr
= priv
->scd_base_addr
+
4159 SCD_TRANSLATE_TBL_OFFSET_QUEUE(txq_id
);
4161 tbl_dw
= iwl_read_restricted_mem(priv
, tbl_dw_addr
);
4164 tbl_dw
= (scd_q2ratid
<< 16) | (tbl_dw
& 0x0000FFFF);
4166 tbl_dw
= scd_q2ratid
| (tbl_dw
& 0xFFFF0000);
4168 iwl_write_restricted_mem(priv
, tbl_dw_addr
, tbl_dw
);
4174 * txq_id must be greater than IWL_BACK_QUEUE_FIRST_ID
4176 static int iwl4965_tx_queue_agg_enable(struct iwl_priv
*priv
, int txq_id
,
4177 int tx_fifo
, int sta_id
, int tid
,
4180 unsigned long flags
;
4184 if (IWL_BACK_QUEUE_FIRST_ID
> txq_id
)
4185 IWL_WARNING("queue number too small: %d, must be > %d\n",
4186 txq_id
, IWL_BACK_QUEUE_FIRST_ID
);
4188 ra_tid
= BUILD_RAxTID(sta_id
, tid
);
4190 iwl_sta_modify_enable_tid_tx(priv
, sta_id
, tid
);
4192 spin_lock_irqsave(&priv
->lock
, flags
);
4193 rc
= iwl_grab_restricted_access(priv
);
4195 spin_unlock_irqrestore(&priv
->lock
, flags
);
4199 iwl4965_tx_queue_stop_scheduler(priv
, txq_id
);
4201 iwl4965_tx_queue_set_q2ratid(priv
, ra_tid
, txq_id
);
4204 iwl_set_bits_restricted_reg(priv
, SCD_QUEUECHAIN_SEL
, (1<<txq_id
));
4206 priv
->txq
[txq_id
].q
.read_ptr
= (ssn_idx
& 0xff);
4207 priv
->txq
[txq_id
].q
.write_ptr
= (ssn_idx
& 0xff);
4209 /* supposes that ssn_idx is valid (!= 0xFFF) */
4210 iwl4965_set_wr_ptrs(priv
, txq_id
, ssn_idx
);
4212 iwl_write_restricted_mem(priv
,
4213 priv
->scd_base_addr
+ SCD_CONTEXT_QUEUE_OFFSET(txq_id
),
4214 (SCD_WIN_SIZE
<< SCD_QUEUE_CTX_REG1_WIN_SIZE_POS
) &
4215 SCD_QUEUE_CTX_REG1_WIN_SIZE_MSK
);
4217 iwl_write_restricted_mem(priv
, priv
->scd_base_addr
+
4218 SCD_CONTEXT_QUEUE_OFFSET(txq_id
) + sizeof(u32
),
4219 (SCD_FRAME_LIMIT
<< SCD_QUEUE_CTX_REG2_FRAME_LIMIT_POS
)
4220 & SCD_QUEUE_CTX_REG2_FRAME_LIMIT_MSK
);
4222 iwl_set_bits_restricted_reg(priv
, SCD_INTERRUPT_MASK
, (1 << txq_id
));
4224 iwl4965_tx_queue_set_status(priv
, &priv
->txq
[txq_id
], tx_fifo
, 1);
4226 iwl_release_restricted_access(priv
);
4227 spin_unlock_irqrestore(&priv
->lock
, flags
);
4233 * txq_id must be greater than IWL_BACK_QUEUE_FIRST_ID
4235 static int iwl4965_tx_queue_agg_disable(struct iwl_priv
*priv
, u16 txq_id
,
4236 u16 ssn_idx
, u8 tx_fifo
)
4238 unsigned long flags
;
4241 if (IWL_BACK_QUEUE_FIRST_ID
> txq_id
) {
4242 IWL_WARNING("queue number too small: %d, must be > %d\n",
4243 txq_id
, IWL_BACK_QUEUE_FIRST_ID
);
4247 spin_lock_irqsave(&priv
->lock
, flags
);
4248 rc
= iwl_grab_restricted_access(priv
);
4250 spin_unlock_irqrestore(&priv
->lock
, flags
);
4254 iwl4965_tx_queue_stop_scheduler(priv
, txq_id
);
4256 iwl_clear_bits_restricted_reg(priv
, SCD_QUEUECHAIN_SEL
, (1 << txq_id
));
4258 priv
->txq
[txq_id
].q
.read_ptr
= (ssn_idx
& 0xff);
4259 priv
->txq
[txq_id
].q
.write_ptr
= (ssn_idx
& 0xff);
4260 /* supposes that ssn_idx is valid (!= 0xFFF) */
4261 iwl4965_set_wr_ptrs(priv
, txq_id
, ssn_idx
);
4263 iwl_clear_bits_restricted_reg(priv
, SCD_INTERRUPT_MASK
, (1 << txq_id
));
4264 iwl4965_txq_ctx_deactivate(priv
, txq_id
);
4265 iwl4965_tx_queue_set_status(priv
, &priv
->txq
[txq_id
], tx_fifo
, 0);
4267 iwl_release_restricted_access(priv
);
4268 spin_unlock_irqrestore(&priv
->lock
, flags
);
4273 #endif/* CONFIG_IWLWIFI_HT_AGG */
4274 #endif /* CONFIG_IWLWIFI_HT */
4278 int iwl4965_init_hw_rates(struct iwl_priv
*priv
, struct ieee80211_rate
*rates
)
4285 * iwl4965_add_station - Initialize a station's hardware rate table
4287 * The uCode contains a table of fallback rates and retries per rate
4288 * for automatic fallback during transmission.
4290 * NOTE: This initializes the table for a single retry per data rate
4291 * which is not optimal. Setting up an intelligent retry per rate
4292 * requires feedback from transmission, which isn't exposed through
4293 * rc80211_simple which is what this driver is currently using.
4296 void iwl4965_add_station(struct iwl_priv
*priv
, const u8
*addr
, int is_ap
)
4299 struct iwl_link_quality_cmd link_cmd
= {
4304 /* Set up the rate scaling to start at 54M and fallback
4305 * all the way to 1M in IEEE order and then spin on IEEE */
4307 r
= IWL_RATE_54M_INDEX
;
4308 else if (priv
->phymode
== MODE_IEEE80211A
)
4309 r
= IWL_RATE_6M_INDEX
;
4311 r
= IWL_RATE_1M_INDEX
;
4313 for (i
= 0; i
< LINK_QUAL_MAX_RETRY_NUM
; i
++) {
4315 if (r
>= IWL_FIRST_CCK_RATE
&& r
<= IWL_LAST_CCK_RATE
)
4316 rate_flags
|= RATE_MCS_CCK_MSK
;
4318 rate_flags
|= RATE_MCS_ANT_B_MSK
;
4319 rate_flags
&= ~RATE_MCS_ANT_A_MSK
;
4320 link_cmd
.rs_table
[i
].rate_n_flags
=
4321 iwl_hw_set_rate_n_flags(iwl_rates
[r
].plcp
, rate_flags
);
4322 r
= iwl_get_prev_ieee_rate(r
);
4325 link_cmd
.general_params
.single_stream_ant_msk
= 2;
4326 link_cmd
.general_params
.dual_stream_ant_msk
= 3;
4327 link_cmd
.agg_params
.agg_dis_start_th
= 3;
4328 link_cmd
.agg_params
.agg_time_limit
= cpu_to_le16(4000);
4330 /* Update the rate scaling for control frame Tx to AP */
4331 link_cmd
.sta_id
= is_ap
? IWL_AP_ID
: IWL4965_BROADCAST_ID
;
4333 iwl_send_cmd_pdu(priv
, REPLY_TX_LINK_QUALITY_CMD
, sizeof(link_cmd
),
4337 #ifdef CONFIG_IWLWIFI_HT
4339 static u8
iwl_is_channel_extension(struct iwl_priv
*priv
, int phymode
,
4340 u16 channel
, u8 extension_chan_offset
)
4342 const struct iwl_channel_info
*ch_info
;
4344 ch_info
= iwl_get_channel_info(priv
, phymode
, channel
);
4345 if (!is_channel_valid(ch_info
))
4348 if (extension_chan_offset
== IWL_EXT_CHANNEL_OFFSET_AUTO
)
4351 if ((ch_info
->fat_extension_channel
== extension_chan_offset
) ||
4352 (ch_info
->fat_extension_channel
== HT_IE_EXT_CHANNEL_MAX
))
4358 static u8
iwl_is_fat_tx_allowed(struct iwl_priv
*priv
,
4359 const struct sta_ht_info
*ht_info
)
4362 if (priv
->channel_width
!= IWL_CHANNEL_WIDTH_40MHZ
)
4365 if (ht_info
->supported_chan_width
!= IWL_CHANNEL_WIDTH_40MHZ
)
4368 if (ht_info
->extension_chan_offset
== IWL_EXT_CHANNEL_OFFSET_AUTO
)
4371 /* no fat tx allowed on 2.4GHZ */
4372 if (priv
->phymode
!= MODE_IEEE80211A
)
4374 return (iwl_is_channel_extension(priv
, priv
->phymode
,
4375 ht_info
->control_channel
,
4376 ht_info
->extension_chan_offset
));
4379 void iwl4965_set_rxon_ht(struct iwl_priv
*priv
, struct sta_ht_info
*ht_info
)
4381 struct iwl_rxon_cmd
*rxon
= &priv
->staging_rxon
;
4384 if (!ht_info
->is_ht
)
4387 if (iwl_is_fat_tx_allowed(priv
, ht_info
))
4388 rxon
->flags
|= RXON_FLG_CHANNEL_MODE_MIXED_MSK
;
4390 rxon
->flags
&= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK
|
4391 RXON_FLG_CHANNEL_MODE_PURE_40_MSK
);
4393 if (le16_to_cpu(rxon
->channel
) != ht_info
->control_channel
) {
4394 IWL_DEBUG_ASSOC("control diff than current %d %d\n",
4395 le16_to_cpu(rxon
->channel
),
4396 ht_info
->control_channel
);
4397 rxon
->channel
= cpu_to_le16(ht_info
->control_channel
);
4401 /* Note: control channel is oposit to extension channel */
4402 switch (ht_info
->extension_chan_offset
) {
4403 case IWL_EXT_CHANNEL_OFFSET_ABOVE
:
4404 rxon
->flags
&= ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK
);
4406 case IWL_EXT_CHANNEL_OFFSET_BELOW
:
4407 rxon
->flags
|= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK
;
4409 case IWL_EXT_CHANNEL_OFFSET_AUTO
:
4410 rxon
->flags
&= ~RXON_FLG_CHANNEL_MODE_MIXED_MSK
;
4413 rxon
->flags
&= ~RXON_FLG_CHANNEL_MODE_MIXED_MSK
;
4417 val
= ht_info
->operating_mode
;
4419 rxon
->flags
|= cpu_to_le32(val
<< RXON_FLG_HT_OPERATING_MODE_POS
);
4421 priv
->active_rate_ht
[0] = ht_info
->supp_rates
[0];
4422 priv
->active_rate_ht
[1] = ht_info
->supp_rates
[1];
4423 iwl4965_set_rxon_chain(priv
);
4425 IWL_DEBUG_ASSOC("supported HT rate 0x%X %X "
4426 "rxon flags 0x%X operation mode :0x%X "
4427 "extension channel offset 0x%x "
4428 "control chan %d\n",
4429 priv
->active_rate_ht
[0], priv
->active_rate_ht
[1],
4430 le32_to_cpu(rxon
->flags
), ht_info
->operating_mode
,
4431 ht_info
->extension_chan_offset
,
4432 ht_info
->control_channel
);
4436 void iwl4965_set_ht_add_station(struct iwl_priv
*priv
, u8 index
)
4439 struct sta_ht_info
*ht_info
= &priv
->current_assoc_ht
;
4441 priv
->current_channel_width
= IWL_CHANNEL_WIDTH_20MHZ
;
4442 if (!ht_info
->is_ht
)
4445 sta_flags
= priv
->stations
[index
].sta
.station_flags
;
4447 if (ht_info
->tx_mimo_ps_mode
== IWL_MIMO_PS_DYNAMIC
)
4448 sta_flags
|= STA_FLG_RTS_MIMO_PROT_MSK
;
4450 sta_flags
&= ~STA_FLG_RTS_MIMO_PROT_MSK
;
4452 sta_flags
|= cpu_to_le32(
4453 (u32
)ht_info
->ampdu_factor
<< STA_FLG_MAX_AGG_SIZE_POS
);
4455 sta_flags
|= cpu_to_le32(
4456 (u32
)ht_info
->mpdu_density
<< STA_FLG_AGG_MPDU_DENSITY_POS
);
4458 sta_flags
&= (~STA_FLG_FAT_EN_MSK
);
4459 ht_info
->tx_chan_width
= IWL_CHANNEL_WIDTH_20MHZ
;
4460 ht_info
->chan_width_cap
= IWL_CHANNEL_WIDTH_20MHZ
;
4462 if (iwl_is_fat_tx_allowed(priv
, ht_info
)) {
4463 sta_flags
|= STA_FLG_FAT_EN_MSK
;
4464 ht_info
->chan_width_cap
= IWL_CHANNEL_WIDTH_40MHZ
;
4465 if (ht_info
->supported_chan_width
== IWL_CHANNEL_WIDTH_40MHZ
)
4466 ht_info
->tx_chan_width
= IWL_CHANNEL_WIDTH_40MHZ
;
4468 priv
->current_channel_width
= ht_info
->tx_chan_width
;
4469 priv
->stations
[index
].sta
.station_flags
= sta_flags
;
4474 #ifdef CONFIG_IWLWIFI_HT_AGG
4476 static void iwl4965_sta_modify_add_ba_tid(struct iwl_priv
*priv
,
4477 int sta_id
, int tid
, u16 ssn
)
4479 unsigned long flags
;
4481 spin_lock_irqsave(&priv
->sta_lock
, flags
);
4482 priv
->stations
[sta_id
].sta
.station_flags_msk
= 0;
4483 priv
->stations
[sta_id
].sta
.sta
.modify_mask
= STA_MODIFY_ADDBA_TID_MSK
;
4484 priv
->stations
[sta_id
].sta
.add_immediate_ba_tid
= (u8
)tid
;
4485 priv
->stations
[sta_id
].sta
.add_immediate_ba_ssn
= cpu_to_le16(ssn
);
4486 priv
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
4487 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
4489 iwl_send_add_station(priv
, &priv
->stations
[sta_id
].sta
, CMD_ASYNC
);
4492 static void iwl4965_sta_modify_del_ba_tid(struct iwl_priv
*priv
,
4493 int sta_id
, int tid
)
4495 unsigned long flags
;
4497 spin_lock_irqsave(&priv
->sta_lock
, flags
);
4498 priv
->stations
[sta_id
].sta
.station_flags_msk
= 0;
4499 priv
->stations
[sta_id
].sta
.sta
.modify_mask
= STA_MODIFY_DELBA_TID_MSK
;
4500 priv
->stations
[sta_id
].sta
.remove_immediate_ba_tid
= (u8
)tid
;
4501 priv
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
4502 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
4504 iwl_send_add_station(priv
, &priv
->stations
[sta_id
].sta
, CMD_ASYNC
);
4507 static const u16 default_tid_to_tx_fifo
[] = {
4527 static int iwl_txq_ctx_activate_free(struct iwl_priv
*priv
)
4531 for (txq_id
= 0; txq_id
< priv
->hw_setting
.max_txq_num
; txq_id
++)
4532 if (!test_and_set_bit(txq_id
, &priv
->txq_ctx_active_msk
))
4537 int iwl_mac_ht_tx_agg_start(struct ieee80211_hw
*hw
, u8
*da
, u16 tid
,
4541 struct iwl_priv
*priv
= hw
->priv
;
4546 unsigned long flags
;
4547 struct iwl_tid_data
*tid_data
;
4548 DECLARE_MAC_BUF(mac
);
4550 if (likely(tid
< ARRAY_SIZE(default_tid_to_tx_fifo
)))
4551 tx_fifo
= default_tid_to_tx_fifo
[tid
];
4555 IWL_WARNING("iwl-AGG iwl_mac_ht_tx_agg_start on da=%s"
4556 " tid=%d\n", print_mac(mac
, da
), tid
);
4558 sta_id
= iwl_hw_find_station(priv
, da
);
4559 if (sta_id
== IWL_INVALID_STATION
)
4562 txq_id
= iwl_txq_ctx_activate_free(priv
);
4566 spin_lock_irqsave(&priv
->sta_lock
, flags
);
4567 tid_data
= &priv
->stations
[sta_id
].tid
[tid
];
4568 ssn
= SEQ_TO_SN(tid_data
->seq_number
);
4569 tid_data
->agg
.txq_id
= txq_id
;
4570 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
4572 *start_seq_num
= ssn
;
4573 iwl4965_ba_status(priv
, tid
, BA_STATUS_ACTIVE
);
4574 return iwl4965_tx_queue_agg_enable(priv
, txq_id
, tx_fifo
,
4579 int iwl_mac_ht_tx_agg_stop(struct ieee80211_hw
*hw
, u8
*da
, u16 tid
,
4583 struct iwl_priv
*priv
= hw
->priv
;
4584 int tx_fifo_id
, txq_id
, sta_id
, ssn
= -1;
4585 struct iwl_tid_data
*tid_data
;
4587 DECLARE_MAC_BUF(mac
);
4590 IWL_ERROR("%s: da = NULL\n", __func__
);
4594 if (likely(tid
< ARRAY_SIZE(default_tid_to_tx_fifo
)))
4595 tx_fifo_id
= default_tid_to_tx_fifo
[tid
];
4599 sta_id
= iwl_hw_find_station(priv
, da
);
4601 if (sta_id
== IWL_INVALID_STATION
)
4604 tid_data
= &priv
->stations
[sta_id
].tid
[tid
];
4605 ssn
= (tid_data
->seq_number
& IEEE80211_SCTL_SEQ
) >> 4;
4606 txq_id
= tid_data
->agg
.txq_id
;
4608 rc
= iwl4965_tx_queue_agg_disable(priv
, txq_id
, ssn
, tx_fifo_id
);
4609 /* FIXME: need more safe way to handle error condition */
4613 iwl4965_ba_status(priv
, tid
, BA_STATUS_INITIATOR_DELBA
);
4614 IWL_DEBUG_INFO("iwl_mac_ht_tx_agg_stop on da=%s tid=%d\n",
4615 print_mac(mac
, da
), tid
);
4620 int iwl_mac_ht_rx_agg_start(struct ieee80211_hw
*hw
, u8
*da
,
4621 u16 tid
, u16 start_seq_num
)
4623 struct iwl_priv
*priv
= hw
->priv
;
4625 DECLARE_MAC_BUF(mac
);
4627 IWL_WARNING("iwl-AGG iwl_mac_ht_rx_agg_start on da=%s"
4628 " tid=%d\n", print_mac(mac
, da
), tid
);
4629 sta_id
= iwl_hw_find_station(priv
, da
);
4630 iwl4965_sta_modify_add_ba_tid(priv
, sta_id
, tid
, start_seq_num
);
4634 int iwl_mac_ht_rx_agg_stop(struct ieee80211_hw
*hw
, u8
*da
,
4635 u16 tid
, int generator
)
4637 struct iwl_priv
*priv
= hw
->priv
;
4639 DECLARE_MAC_BUF(mac
);
4641 IWL_WARNING("iwl-AGG iwl_mac_ht_rx_agg_stop on da=%s tid=%d\n",
4642 print_mac(mac
, da
), tid
);
4643 sta_id
= iwl_hw_find_station(priv
, da
);
4644 iwl4965_sta_modify_del_ba_tid(priv
, sta_id
, tid
);
4648 #endif /* CONFIG_IWLWIFI_HT_AGG */
4649 #endif /* CONFIG_IWLWIFI_HT */
4651 /* Set up 4965-specific Rx frame reply handlers */
4652 void iwl_hw_rx_handler_setup(struct iwl_priv
*priv
)
4654 /* Legacy Rx frames */
4655 priv
->rx_handlers
[REPLY_4965_RX
] = iwl4965_rx_reply_rx
;
4657 /* High-throughput (HT) Rx frames */
4658 priv
->rx_handlers
[REPLY_RX_PHY_CMD
] = iwl4965_rx_reply_rx_phy
;
4659 priv
->rx_handlers
[REPLY_RX_MPDU_CMD
] = iwl4965_rx_reply_rx
;
4661 priv
->rx_handlers
[MISSED_BEACONS_NOTIFICATION
] =
4662 iwl4965_rx_missed_beacon_notif
;
4664 #ifdef CONFIG_IWLWIFI_HT
4665 #ifdef CONFIG_IWLWIFI_HT_AGG
4666 priv
->rx_handlers
[REPLY_COMPRESSED_BA
] = iwl4965_rx_reply_compressed_ba
;
4667 #endif /* CONFIG_IWLWIFI_AGG */
4668 #endif /* CONFIG_IWLWIFI */
4671 void iwl_hw_setup_deferred_work(struct iwl_priv
*priv
)
4673 INIT_WORK(&priv
->txpower_work
, iwl4965_bg_txpower_work
);
4674 INIT_WORK(&priv
->statistics_work
, iwl4965_bg_statistics_work
);
4675 #ifdef CONFIG_IWLWIFI_SENSITIVITY
4676 INIT_WORK(&priv
->sensitivity_work
, iwl4965_bg_sensitivity_work
);
4678 #ifdef CONFIG_IWLWIFI_HT
4679 #ifdef CONFIG_IWLWIFI_HT_AGG
4680 INIT_WORK(&priv
->agg_work
, iwl4965_bg_agg_work
);
4681 #endif /* CONFIG_IWLWIFI_AGG */
4682 #endif /* CONFIG_IWLWIFI_HT */
4683 init_timer(&priv
->statistics_periodic
);
4684 priv
->statistics_periodic
.data
= (unsigned long)priv
;
4685 priv
->statistics_periodic
.function
= iwl4965_bg_statistics_periodic
;
4688 void iwl_hw_cancel_deferred_work(struct iwl_priv
*priv
)
4690 del_timer_sync(&priv
->statistics_periodic
);
4692 cancel_delayed_work(&priv
->init_alive_start
);
4695 struct pci_device_id iwl_hw_card_ids
[] = {
4696 {0x8086, 0x4229, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0},
4697 {0x8086, 0x4230, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0},
4701 int iwl_eeprom_acquire_semaphore(struct iwl_priv
*priv
)
4706 for (count
= 0; count
< EEPROM_SEM_RETRY_LIMIT
; count
++) {
4707 iwl_set_bit(priv
, CSR_HW_IF_CONFIG_REG
,
4708 CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM
);
4709 rc
= iwl_poll_bit(priv
, CSR_HW_IF_CONFIG_REG
,
4710 CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM
,
4711 CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM
,
4712 EEPROM_SEM_TIMEOUT
);
4714 IWL_DEBUG_IO("Acquired semaphore after %d tries.\n",
4723 inline void iwl_eeprom_release_semaphore(struct iwl_priv
*priv
)
4725 iwl_clear_bit(priv
, CSR_HW_IF_CONFIG_REG
,
4726 CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM
);
4730 MODULE_DEVICE_TABLE(pci
, iwl_hw_card_ids
);