1 /******************************************************************************
3 * Copyright(c) 2003 - 2008 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>
39 #include <asm/unaligned.h>
41 #include "iwl-eeprom.h"
45 #include "iwl-helpers.h"
47 /* module parameters */
48 static struct iwl_mod_params iwl4965_mod_params
= {
49 .num_of_queues
= IWL4965_MAX_NUM_QUEUES
,
52 /* the rest are 0 by default */
55 static void iwl4965_hw_card_show_info(struct iwl_priv
*priv
);
57 #define IWL_DECLARE_RATE_INFO(r, s, ip, in, rp, rn, pp, np) \
58 [IWL_RATE_##r##M_INDEX] = { IWL_RATE_##r##M_PLCP, \
59 IWL_RATE_SISO_##s##M_PLCP, \
60 IWL_RATE_MIMO_##s##M_PLCP, \
61 IWL_RATE_##r##M_IEEE, \
62 IWL_RATE_##ip##M_INDEX, \
63 IWL_RATE_##in##M_INDEX, \
64 IWL_RATE_##rp##M_INDEX, \
65 IWL_RATE_##rn##M_INDEX, \
66 IWL_RATE_##pp##M_INDEX, \
67 IWL_RATE_##np##M_INDEX }
71 * rate, ht rate, prev rate, next rate, prev tgg rate, next tgg rate
73 * If there isn't a valid next or previous rate then INV is used which
74 * maps to IWL_RATE_INVALID
77 const struct iwl4965_rate_info iwl4965_rates
[IWL_RATE_COUNT
] = {
78 IWL_DECLARE_RATE_INFO(1, INV
, INV
, 2, INV
, 2, INV
, 2), /* 1mbps */
79 IWL_DECLARE_RATE_INFO(2, INV
, 1, 5, 1, 5, 1, 5), /* 2mbps */
80 IWL_DECLARE_RATE_INFO(5, INV
, 2, 6, 2, 11, 2, 11), /*5.5mbps */
81 IWL_DECLARE_RATE_INFO(11, INV
, 9, 12, 9, 12, 5, 18), /* 11mbps */
82 IWL_DECLARE_RATE_INFO(6, 6, 5, 9, 5, 11, 5, 11), /* 6mbps */
83 IWL_DECLARE_RATE_INFO(9, 6, 6, 11, 6, 11, 5, 11), /* 9mbps */
84 IWL_DECLARE_RATE_INFO(12, 12, 11, 18, 11, 18, 11, 18), /* 12mbps */
85 IWL_DECLARE_RATE_INFO(18, 18, 12, 24, 12, 24, 11, 24), /* 18mbps */
86 IWL_DECLARE_RATE_INFO(24, 24, 18, 36, 18, 36, 18, 36), /* 24mbps */
87 IWL_DECLARE_RATE_INFO(36, 36, 24, 48, 24, 48, 24, 48), /* 36mbps */
88 IWL_DECLARE_RATE_INFO(48, 48, 36, 54, 36, 54, 36, 54), /* 48mbps */
89 IWL_DECLARE_RATE_INFO(54, 54, 48, INV
, 48, INV
, 48, INV
),/* 54mbps */
90 IWL_DECLARE_RATE_INFO(60, 60, 48, INV
, 48, INV
, 48, INV
),/* 60mbps */
93 #ifdef CONFIG_IWL4965_HT
95 static const u16 default_tid_to_tx_fifo
[] = {
115 #endif /*CONFIG_IWL4965_HT */
117 /* check contents of special bootstrap uCode SRAM */
118 static int iwl4965_verify_bsm(struct iwl_priv
*priv
)
120 __le32
*image
= priv
->ucode_boot
.v_addr
;
121 u32 len
= priv
->ucode_boot
.len
;
125 IWL_DEBUG_INFO("Begin verify bsm\n");
127 /* verify BSM SRAM contents */
128 val
= iwl_read_prph(priv
, BSM_WR_DWCOUNT_REG
);
129 for (reg
= BSM_SRAM_LOWER_BOUND
;
130 reg
< BSM_SRAM_LOWER_BOUND
+ len
;
131 reg
+= sizeof(u32
), image
++) {
132 val
= iwl_read_prph(priv
, reg
);
133 if (val
!= le32_to_cpu(*image
)) {
134 IWL_ERROR("BSM uCode verification failed at "
135 "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
136 BSM_SRAM_LOWER_BOUND
,
137 reg
- BSM_SRAM_LOWER_BOUND
, len
,
138 val
, le32_to_cpu(*image
));
143 IWL_DEBUG_INFO("BSM bootstrap uCode image OK\n");
149 * iwl4965_load_bsm - Load bootstrap instructions
153 * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
154 * in special SRAM that does not power down during RFKILL. When powering back
155 * up after power-saving sleeps (or during initial uCode load), the BSM loads
156 * the bootstrap program into the on-board processor, and starts it.
158 * The bootstrap program loads (via DMA) instructions and data for a new
159 * program from host DRAM locations indicated by the host driver in the
160 * BSM_DRAM_* registers. Once the new program is loaded, it starts
163 * When initializing the NIC, the host driver points the BSM to the
164 * "initialize" uCode image. This uCode sets up some internal data, then
165 * notifies host via "initialize alive" that it is complete.
167 * The host then replaces the BSM_DRAM_* pointer values to point to the
168 * normal runtime uCode instructions and a backup uCode data cache buffer
169 * (filled initially with starting data values for the on-board processor),
170 * then triggers the "initialize" uCode to load and launch the runtime uCode,
171 * which begins normal operation.
173 * When doing a power-save shutdown, runtime uCode saves data SRAM into
174 * the backup data cache in DRAM before SRAM is powered down.
176 * When powering back up, the BSM loads the bootstrap program. This reloads
177 * the runtime uCode instructions and the backup data cache into SRAM,
178 * and re-launches the runtime uCode from where it left off.
180 static int iwl4965_load_bsm(struct iwl_priv
*priv
)
182 __le32
*image
= priv
->ucode_boot
.v_addr
;
183 u32 len
= priv
->ucode_boot
.len
;
193 IWL_DEBUG_INFO("Begin load bsm\n");
195 /* make sure bootstrap program is no larger than BSM's SRAM size */
196 if (len
> IWL_MAX_BSM_SIZE
)
199 /* Tell bootstrap uCode where to find the "Initialize" uCode
200 * in host DRAM ... host DRAM physical address bits 35:4 for 4965.
201 * NOTE: iwl4965_initialize_alive_start() will replace these values,
202 * after the "initialize" uCode has run, to point to
203 * runtime/protocol instructions and backup data cache. */
204 pinst
= priv
->ucode_init
.p_addr
>> 4;
205 pdata
= priv
->ucode_init_data
.p_addr
>> 4;
206 inst_len
= priv
->ucode_init
.len
;
207 data_len
= priv
->ucode_init_data
.len
;
209 ret
= iwl_grab_nic_access(priv
);
213 iwl_write_prph(priv
, BSM_DRAM_INST_PTR_REG
, pinst
);
214 iwl_write_prph(priv
, BSM_DRAM_DATA_PTR_REG
, pdata
);
215 iwl_write_prph(priv
, BSM_DRAM_INST_BYTECOUNT_REG
, inst_len
);
216 iwl_write_prph(priv
, BSM_DRAM_DATA_BYTECOUNT_REG
, data_len
);
218 /* Fill BSM memory with bootstrap instructions */
219 for (reg_offset
= BSM_SRAM_LOWER_BOUND
;
220 reg_offset
< BSM_SRAM_LOWER_BOUND
+ len
;
221 reg_offset
+= sizeof(u32
), image
++)
222 _iwl_write_prph(priv
, reg_offset
, le32_to_cpu(*image
));
224 ret
= iwl4965_verify_bsm(priv
);
226 iwl_release_nic_access(priv
);
230 /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
231 iwl_write_prph(priv
, BSM_WR_MEM_SRC_REG
, 0x0);
232 iwl_write_prph(priv
, BSM_WR_MEM_DST_REG
, RTC_INST_LOWER_BOUND
);
233 iwl_write_prph(priv
, BSM_WR_DWCOUNT_REG
, len
/ sizeof(u32
));
235 /* Load bootstrap code into instruction SRAM now,
236 * to prepare to load "initialize" uCode */
237 iwl_write_prph(priv
, BSM_WR_CTRL_REG
, BSM_WR_CTRL_REG_BIT_START
);
239 /* Wait for load of bootstrap uCode to finish */
240 for (i
= 0; i
< 100; i
++) {
241 done
= iwl_read_prph(priv
, BSM_WR_CTRL_REG
);
242 if (!(done
& BSM_WR_CTRL_REG_BIT_START
))
247 IWL_DEBUG_INFO("BSM write complete, poll %d iterations\n", i
);
249 IWL_ERROR("BSM write did not complete!\n");
253 /* Enable future boot loads whenever power management unit triggers it
254 * (e.g. when powering back up after power-save shutdown) */
255 iwl_write_prph(priv
, BSM_WR_CTRL_REG
, BSM_WR_CTRL_REG_BIT_START_EN
);
257 iwl_release_nic_access(priv
);
262 static int iwl4965_init_drv(struct iwl_priv
*priv
)
267 priv
->antenna
= (enum iwl4965_antenna
)priv
->cfg
->mod_params
->antenna
;
268 priv
->retry_rate
= 1;
269 priv
->ibss_beacon
= NULL
;
271 spin_lock_init(&priv
->lock
);
272 spin_lock_init(&priv
->power_data
.lock
);
273 spin_lock_init(&priv
->sta_lock
);
274 spin_lock_init(&priv
->hcmd_lock
);
275 spin_lock_init(&priv
->lq_mngr
.lock
);
277 priv
->shared_virt
= pci_alloc_consistent(priv
->pci_dev
,
278 sizeof(struct iwl4965_shared
),
281 if (!priv
->shared_virt
) {
286 memset(priv
->shared_virt
, 0, sizeof(struct iwl4965_shared
));
289 for (i
= 0; i
< IWL_IBSS_MAC_HASH_SIZE
; i
++)
290 INIT_LIST_HEAD(&priv
->ibss_mac_hash
[i
]);
292 INIT_LIST_HEAD(&priv
->free_frames
);
294 mutex_init(&priv
->mutex
);
296 /* Clear the driver's (not device's) station table */
297 iwlcore_clear_stations_table(priv
);
299 priv
->data_retry_limit
= -1;
300 priv
->ieee_channels
= NULL
;
301 priv
->ieee_rates
= NULL
;
302 priv
->band
= IEEE80211_BAND_2GHZ
;
304 priv
->iw_mode
= IEEE80211_IF_TYPE_STA
;
306 priv
->use_ant_b_for_management_frame
= 1; /* start with ant B */
307 priv
->valid_antenna
= 0x7; /* assume all 3 connected */
308 priv
->ps_mode
= IWL_MIMO_PS_NONE
;
310 /* Choose which receivers/antennas to use */
311 iwl4965_set_rxon_chain(priv
);
313 iwlcore_reset_qos(priv
);
315 priv
->qos_data
.qos_active
= 0;
316 priv
->qos_data
.qos_cap
.val
= 0;
318 iwlcore_set_rxon_channel(priv
, IEEE80211_BAND_2GHZ
, 6);
320 priv
->rates_mask
= IWL_RATES_MASK
;
321 /* If power management is turned on, default to AC mode */
322 priv
->power_mode
= IWL_POWER_AC
;
323 priv
->user_txpower_limit
= IWL_DEFAULT_TX_POWER
;
325 ret
= iwl_init_channel_map(priv
);
327 IWL_ERROR("initializing regulatory failed: %d\n", ret
);
331 ret
= iwl4965_init_geos(priv
);
333 IWL_ERROR("initializing geos failed: %d\n", ret
);
334 goto err_free_channel_map
;
337 ret
= ieee80211_register_hw(priv
->hw
);
339 IWL_ERROR("Failed to register network device (error %d)\n",
344 priv
->hw
->conf
.beacon_int
= 100;
345 priv
->mac80211_registered
= 1;
350 iwl4965_free_geos(priv
);
351 err_free_channel_map
:
352 iwl_free_channel_map(priv
);
357 static int is_fat_channel(__le32 rxon_flags
)
359 return (rxon_flags
& RXON_FLG_CHANNEL_MODE_PURE_40_MSK
) ||
360 (rxon_flags
& RXON_FLG_CHANNEL_MODE_MIXED_MSK
);
363 static u8
is_single_stream(struct iwl_priv
*priv
)
365 #ifdef CONFIG_IWL4965_HT
366 if (!priv
->current_ht_config
.is_ht
||
367 (priv
->current_ht_config
.supp_mcs_set
[1] == 0) ||
368 (priv
->ps_mode
== IWL_MIMO_PS_STATIC
))
372 #endif /*CONFIG_IWL4965_HT */
376 int iwl4965_hwrate_to_plcp_idx(u32 rate_n_flags
)
380 /* 4965 HT rate format */
381 if (rate_n_flags
& RATE_MCS_HT_MSK
) {
382 idx
= (rate_n_flags
& 0xff);
384 if (idx
>= IWL_RATE_MIMO_6M_PLCP
)
385 idx
= idx
- IWL_RATE_MIMO_6M_PLCP
;
387 idx
+= IWL_FIRST_OFDM_RATE
;
388 /* skip 9M not supported in ht*/
389 if (idx
>= IWL_RATE_9M_INDEX
)
391 if ((idx
>= IWL_FIRST_OFDM_RATE
) && (idx
<= IWL_LAST_OFDM_RATE
))
394 /* 4965 legacy rate format, search for match in table */
396 for (idx
= 0; idx
< ARRAY_SIZE(iwl4965_rates
); idx
++)
397 if (iwl4965_rates
[idx
].plcp
== (rate_n_flags
& 0xFF))
405 * translate ucode response to mac80211 tx status control values
407 void iwl4965_hwrate_to_tx_control(struct iwl_priv
*priv
, u32 rate_n_flags
,
408 struct ieee80211_tx_control
*control
)
412 control
->antenna_sel_tx
=
413 ((rate_n_flags
& RATE_MCS_ANT_AB_MSK
) >> RATE_MCS_ANT_POS
);
414 if (rate_n_flags
& RATE_MCS_HT_MSK
)
415 control
->flags
|= IEEE80211_TXCTL_OFDM_HT
;
416 if (rate_n_flags
& RATE_MCS_GF_MSK
)
417 control
->flags
|= IEEE80211_TXCTL_GREEN_FIELD
;
418 if (rate_n_flags
& RATE_MCS_FAT_MSK
)
419 control
->flags
|= IEEE80211_TXCTL_40_MHZ_WIDTH
;
420 if (rate_n_flags
& RATE_MCS_DUP_MSK
)
421 control
->flags
|= IEEE80211_TXCTL_DUP_DATA
;
422 if (rate_n_flags
& RATE_MCS_SGI_MSK
)
423 control
->flags
|= IEEE80211_TXCTL_SHORT_GI
;
424 /* since iwl4965_hwrate_to_plcp_idx is band indifferent, we always use
425 * IEEE80211_BAND_2GHZ band as it contains all the rates */
426 rate_index
= iwl4965_hwrate_to_plcp_idx(rate_n_flags
);
427 if (rate_index
== -1)
428 control
->tx_rate
= NULL
;
431 &priv
->bands
[IEEE80211_BAND_2GHZ
].bitrates
[rate_index
];
435 * Determine how many receiver/antenna chains to use.
436 * More provides better reception via diversity. Fewer saves power.
437 * MIMO (dual stream) requires at least 2, but works better with 3.
438 * This does not determine *which* chains to use, just how many.
440 static int iwl4965_get_rx_chain_counter(struct iwl_priv
*priv
,
441 u8
*idle_state
, u8
*rx_state
)
443 u8 is_single
= is_single_stream(priv
);
444 u8 is_cam
= test_bit(STATUS_POWER_PMI
, &priv
->status
) ? 0 : 1;
446 /* # of Rx chains to use when expecting MIMO. */
447 if (is_single
|| (!is_cam
&& (priv
->ps_mode
== IWL_MIMO_PS_STATIC
)))
452 /* # Rx chains when idling and maybe trying to save power */
453 switch (priv
->ps_mode
) {
454 case IWL_MIMO_PS_STATIC
:
455 case IWL_MIMO_PS_DYNAMIC
:
456 *idle_state
= (is_cam
) ? 2 : 1;
458 case IWL_MIMO_PS_NONE
:
459 *idle_state
= (is_cam
) ? *rx_state
: 1;
469 int iwl4965_hw_rxq_stop(struct iwl_priv
*priv
)
474 spin_lock_irqsave(&priv
->lock
, flags
);
475 rc
= iwl_grab_nic_access(priv
);
477 spin_unlock_irqrestore(&priv
->lock
, flags
);
482 iwl_write_direct32(priv
, FH_MEM_RCSR_CHNL0_CONFIG_REG
, 0);
483 rc
= iwl_poll_direct_bit(priv
, FH_MEM_RSSR_RX_STATUS_REG
,
486 IWL_ERROR("Can't stop Rx DMA.\n");
488 iwl_release_nic_access(priv
);
489 spin_unlock_irqrestore(&priv
->lock
, flags
);
494 u8
iwl4965_hw_find_station(struct iwl_priv
*priv
, const u8
*addr
)
498 int ret
= IWL_INVALID_STATION
;
500 DECLARE_MAC_BUF(mac
);
502 if ((priv
->iw_mode
== IEEE80211_IF_TYPE_IBSS
) ||
503 (priv
->iw_mode
== IEEE80211_IF_TYPE_AP
))
506 if (is_broadcast_ether_addr(addr
))
507 return priv
->hw_params
.bcast_sta_id
;
509 spin_lock_irqsave(&priv
->sta_lock
, flags
);
510 for (i
= start
; i
< priv
->hw_params
.max_stations
; i
++)
511 if ((priv
->stations
[i
].used
) &&
513 (priv
->stations
[i
].sta
.sta
.addr
, addr
))) {
518 IWL_DEBUG_ASSOC_LIMIT("can not find STA %s total %d\n",
519 print_mac(mac
, addr
), priv
->num_stations
);
522 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
526 static int iwl4965_nic_set_pwr_src(struct iwl_priv
*priv
, int pwr_max
)
531 spin_lock_irqsave(&priv
->lock
, flags
);
532 ret
= iwl_grab_nic_access(priv
);
534 spin_unlock_irqrestore(&priv
->lock
, flags
);
541 ret
= pci_read_config_dword(priv
->pci_dev
, PCI_POWER_SOURCE
,
544 if (val
& PCI_CFG_PMC_PME_FROM_D3COLD_SUPPORT
)
545 iwl_set_bits_mask_prph(priv
, APMG_PS_CTRL_REG
,
546 APMG_PS_CTRL_VAL_PWR_SRC_VAUX
,
547 ~APMG_PS_CTRL_MSK_PWR_SRC
);
549 iwl_set_bits_mask_prph(priv
, APMG_PS_CTRL_REG
,
550 APMG_PS_CTRL_VAL_PWR_SRC_VMAIN
,
551 ~APMG_PS_CTRL_MSK_PWR_SRC
);
553 iwl_release_nic_access(priv
);
554 spin_unlock_irqrestore(&priv
->lock
, flags
);
559 static int iwl4965_rx_init(struct iwl_priv
*priv
, struct iwl4965_rx_queue
*rxq
)
563 unsigned int rb_size
;
565 spin_lock_irqsave(&priv
->lock
, flags
);
566 ret
= iwl_grab_nic_access(priv
);
568 spin_unlock_irqrestore(&priv
->lock
, flags
);
572 if (priv
->cfg
->mod_params
->amsdu_size_8K
)
573 rb_size
= FH_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_8K
;
575 rb_size
= FH_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_4K
;
578 iwl_write_direct32(priv
, FH_MEM_RCSR_CHNL0_CONFIG_REG
, 0);
580 /* Reset driver's Rx queue write index */
581 iwl_write_direct32(priv
, FH_RSCSR_CHNL0_RBDCB_WPTR_REG
, 0);
583 /* Tell device where to find RBD circular buffer in DRAM */
584 iwl_write_direct32(priv
, FH_RSCSR_CHNL0_RBDCB_BASE_REG
,
587 /* Tell device where in DRAM to update its Rx status */
588 iwl_write_direct32(priv
, FH_RSCSR_CHNL0_STTS_WPTR_REG
,
590 offsetof(struct iwl4965_shared
, rb_closed
)) >> 4);
592 /* Enable Rx DMA, enable host interrupt, Rx buffer size 4k, 256 RBDs */
593 iwl_write_direct32(priv
, FH_MEM_RCSR_CHNL0_CONFIG_REG
,
594 FH_RCSR_RX_CONFIG_CHNL_EN_ENABLE_VAL
|
595 FH_RCSR_CHNL0_RX_CONFIG_IRQ_DEST_INT_HOST_VAL
|
598 (RX_QUEUE_SIZE_LOG
<<
599 FH_RCSR_RX_CONFIG_RBDCB_SIZE_BITSHIFT
));
602 * iwl_write32(priv,CSR_INT_COAL_REG,0);
605 iwl_release_nic_access(priv
);
606 spin_unlock_irqrestore(&priv
->lock
, flags
);
611 /* Tell 4965 where to find the "keep warm" buffer */
612 static int iwl4965_kw_init(struct iwl_priv
*priv
)
617 spin_lock_irqsave(&priv
->lock
, flags
);
618 rc
= iwl_grab_nic_access(priv
);
622 iwl_write_direct32(priv
, IWL_FH_KW_MEM_ADDR_REG
,
623 priv
->kw
.dma_addr
>> 4);
624 iwl_release_nic_access(priv
);
626 spin_unlock_irqrestore(&priv
->lock
, flags
);
630 static int iwl4965_kw_alloc(struct iwl_priv
*priv
)
632 struct pci_dev
*dev
= priv
->pci_dev
;
633 struct iwl4965_kw
*kw
= &priv
->kw
;
635 kw
->size
= IWL4965_KW_SIZE
; /* TBW need set somewhere else */
636 kw
->v_addr
= pci_alloc_consistent(dev
, kw
->size
, &kw
->dma_addr
);
644 * iwl4965_kw_free - Free the "keep warm" buffer
646 static void iwl4965_kw_free(struct iwl_priv
*priv
)
648 struct pci_dev
*dev
= priv
->pci_dev
;
649 struct iwl4965_kw
*kw
= &priv
->kw
;
652 pci_free_consistent(dev
, kw
->size
, kw
->v_addr
, kw
->dma_addr
);
653 memset(kw
, 0, sizeof(*kw
));
658 * iwl4965_txq_ctx_reset - Reset TX queue context
659 * Destroys all DMA structures and initialise them again
664 static int iwl4965_txq_ctx_reset(struct iwl_priv
*priv
)
667 int txq_id
, slots_num
;
670 iwl4965_kw_free(priv
);
672 /* Free all tx/cmd queues and keep-warm buffer */
673 iwl4965_hw_txq_ctx_free(priv
);
675 /* Alloc keep-warm buffer */
676 rc
= iwl4965_kw_alloc(priv
);
678 IWL_ERROR("Keep Warm allocation failed");
682 spin_lock_irqsave(&priv
->lock
, flags
);
684 rc
= iwl_grab_nic_access(priv
);
686 IWL_ERROR("TX reset failed");
687 spin_unlock_irqrestore(&priv
->lock
, flags
);
691 /* Turn off all Tx DMA channels */
692 iwl_write_prph(priv
, IWL49_SCD_TXFACT
, 0);
693 iwl_release_nic_access(priv
);
694 spin_unlock_irqrestore(&priv
->lock
, flags
);
696 /* Tell 4965 where to find the keep-warm buffer */
697 rc
= iwl4965_kw_init(priv
);
699 IWL_ERROR("kw_init failed\n");
703 /* Alloc and init all (default 16) Tx queues,
704 * including the command queue (#4) */
705 for (txq_id
= 0; txq_id
< priv
->hw_params
.max_txq_num
; txq_id
++) {
706 slots_num
= (txq_id
== IWL_CMD_QUEUE_NUM
) ?
707 TFD_CMD_SLOTS
: TFD_TX_CMD_SLOTS
;
708 rc
= iwl4965_tx_queue_init(priv
, &priv
->txq
[txq_id
], slots_num
,
711 IWL_ERROR("Tx %d queue init failed\n", txq_id
);
719 iwl4965_hw_txq_ctx_free(priv
);
721 iwl4965_kw_free(priv
);
726 int iwl4965_hw_nic_init(struct iwl_priv
*priv
)
730 struct iwl4965_rx_queue
*rxq
= &priv
->rxq
;
735 iwl4965_power_init_handle(priv
);
738 spin_lock_irqsave(&priv
->lock
, flags
);
740 iwl_set_bit(priv
, CSR_GIO_CHICKEN_BITS
,
741 CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER
);
743 iwl_set_bit(priv
, CSR_GP_CNTRL
, CSR_GP_CNTRL_REG_FLAG_INIT_DONE
);
744 rc
= iwl_poll_bit(priv
, CSR_GP_CNTRL
,
745 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY
,
746 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY
, 25000);
748 spin_unlock_irqrestore(&priv
->lock
, flags
);
749 IWL_DEBUG_INFO("Failed to init the card\n");
753 rc
= iwl_grab_nic_access(priv
);
755 spin_unlock_irqrestore(&priv
->lock
, flags
);
759 iwl_read_prph(priv
, APMG_CLK_CTRL_REG
);
761 iwl_write_prph(priv
, APMG_CLK_CTRL_REG
,
762 APMG_CLK_VAL_DMA_CLK_RQT
| APMG_CLK_VAL_BSM_CLK_RQT
);
763 iwl_read_prph(priv
, APMG_CLK_CTRL_REG
);
767 iwl_set_bits_prph(priv
, APMG_PCIDEV_STT_REG
,
768 APMG_PCIDEV_STT_VAL_L1_ACT_DIS
);
770 iwl_release_nic_access(priv
);
771 iwl_write32(priv
, CSR_INT_COALESCING
, 512 / 32);
772 spin_unlock_irqrestore(&priv
->lock
, flags
);
774 /* Determine HW type */
775 rc
= pci_read_config_byte(priv
->pci_dev
, PCI_REVISION_ID
, &rev_id
);
779 IWL_DEBUG_INFO("HW Revision ID = 0x%X\n", rev_id
);
781 iwl4965_nic_set_pwr_src(priv
, 1);
782 spin_lock_irqsave(&priv
->lock
, flags
);
784 if ((rev_id
& 0x80) == 0x80 && (rev_id
& 0x7f) < 8) {
785 pci_read_config_dword(priv
->pci_dev
, PCI_REG_WUM8
, &val
);
786 /* Enable No Snoop field */
787 pci_write_config_dword(priv
->pci_dev
, PCI_REG_WUM8
,
791 spin_unlock_irqrestore(&priv
->lock
, flags
);
793 if (priv
->eeprom
.calib_version
< EEPROM_TX_POWER_VERSION_NEW
) {
794 IWL_ERROR("Older EEPROM detected! Aborting.\n");
798 pci_read_config_byte(priv
->pci_dev
, PCI_LINK_CTRL
, &val_link
);
800 /* disable L1 entry -- workaround for pre-B1 */
801 pci_write_config_byte(priv
->pci_dev
, PCI_LINK_CTRL
, val_link
& ~0x02);
803 spin_lock_irqsave(&priv
->lock
, flags
);
805 /* set CSR_HW_CONFIG_REG for uCode use */
807 iwl_set_bit(priv
, CSR_HW_IF_CONFIG_REG
,
808 CSR49_HW_IF_CONFIG_REG_BIT_4965_R
|
809 CSR49_HW_IF_CONFIG_REG_BIT_RADIO_SI
|
810 CSR49_HW_IF_CONFIG_REG_BIT_MAC_SI
);
812 rc
= iwl_grab_nic_access(priv
);
814 spin_unlock_irqrestore(&priv
->lock
, flags
);
815 IWL_DEBUG_INFO("Failed to init the card\n");
819 iwl_read_prph(priv
, APMG_PS_CTRL_REG
);
820 iwl_set_bits_prph(priv
, APMG_PS_CTRL_REG
, APMG_PS_CTRL_VAL_RESET_REQ
);
822 iwl_clear_bits_prph(priv
, APMG_PS_CTRL_REG
, APMG_PS_CTRL_VAL_RESET_REQ
);
824 iwl_release_nic_access(priv
);
825 spin_unlock_irqrestore(&priv
->lock
, flags
);
827 iwl4965_hw_card_show_info(priv
);
831 /* Allocate the RX queue, or reset if it is already allocated */
833 rc
= iwl4965_rx_queue_alloc(priv
);
835 IWL_ERROR("Unable to initialize Rx queue\n");
839 iwl4965_rx_queue_reset(priv
, rxq
);
841 iwl4965_rx_replenish(priv
);
843 iwl4965_rx_init(priv
, rxq
);
845 spin_lock_irqsave(&priv
->lock
, flags
);
847 rxq
->need_update
= 1;
848 iwl4965_rx_queue_update_write_ptr(priv
, rxq
);
850 spin_unlock_irqrestore(&priv
->lock
, flags
);
852 /* Allocate and init all Tx and Command queues */
853 rc
= iwl4965_txq_ctx_reset(priv
);
857 if (priv
->eeprom
.sku_cap
& EEPROM_SKU_CAP_SW_RF_KILL_ENABLE
)
858 IWL_DEBUG_RF_KILL("SW RF KILL supported in EEPROM.\n");
860 if (priv
->eeprom
.sku_cap
& EEPROM_SKU_CAP_HW_RF_KILL_ENABLE
)
861 IWL_DEBUG_RF_KILL("HW RF KILL supported in EEPROM.\n");
863 set_bit(STATUS_INIT
, &priv
->status
);
868 int iwl4965_hw_nic_stop_master(struct iwl_priv
*priv
)
874 spin_lock_irqsave(&priv
->lock
, flags
);
876 /* set stop master bit */
877 iwl_set_bit(priv
, CSR_RESET
, CSR_RESET_REG_FLAG_STOP_MASTER
);
879 reg_val
= iwl_read32(priv
, CSR_GP_CNTRL
);
881 if (CSR_GP_CNTRL_REG_FLAG_MAC_POWER_SAVE
==
882 (reg_val
& CSR_GP_CNTRL_REG_MSK_POWER_SAVE_TYPE
))
883 IWL_DEBUG_INFO("Card in power save, master is already "
886 rc
= iwl_poll_bit(priv
, CSR_RESET
,
887 CSR_RESET_REG_FLAG_MASTER_DISABLED
,
888 CSR_RESET_REG_FLAG_MASTER_DISABLED
, 100);
890 spin_unlock_irqrestore(&priv
->lock
, flags
);
895 spin_unlock_irqrestore(&priv
->lock
, flags
);
896 IWL_DEBUG_INFO("stop master\n");
902 * iwl4965_hw_txq_ctx_stop - Stop all Tx DMA channels, free Tx queue memory
904 void iwl4965_hw_txq_ctx_stop(struct iwl_priv
*priv
)
910 /* Stop each Tx DMA channel, and wait for it to be idle */
911 for (txq_id
= 0; txq_id
< priv
->hw_params
.max_txq_num
; txq_id
++) {
912 spin_lock_irqsave(&priv
->lock
, flags
);
913 if (iwl_grab_nic_access(priv
)) {
914 spin_unlock_irqrestore(&priv
->lock
, flags
);
918 iwl_write_direct32(priv
,
919 IWL_FH_TCSR_CHNL_TX_CONFIG_REG(txq_id
), 0x0);
920 iwl_poll_direct_bit(priv
, IWL_FH_TSSR_TX_STATUS_REG
,
921 IWL_FH_TSSR_TX_STATUS_REG_MSK_CHNL_IDLE
923 iwl_release_nic_access(priv
);
924 spin_unlock_irqrestore(&priv
->lock
, flags
);
927 /* Deallocate memory for all Tx queues */
928 iwl4965_hw_txq_ctx_free(priv
);
931 int iwl4965_hw_nic_reset(struct iwl_priv
*priv
)
936 iwl4965_hw_nic_stop_master(priv
);
938 spin_lock_irqsave(&priv
->lock
, flags
);
940 iwl_set_bit(priv
, CSR_RESET
, CSR_RESET_REG_FLAG_SW_RESET
);
944 iwl_set_bit(priv
, CSR_GP_CNTRL
, CSR_GP_CNTRL_REG_FLAG_INIT_DONE
);
945 rc
= iwl_poll_bit(priv
, CSR_RESET
,
946 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY
,
947 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY
, 25);
951 rc
= iwl_grab_nic_access(priv
);
953 iwl_write_prph(priv
, APMG_CLK_EN_REG
,
954 APMG_CLK_VAL_DMA_CLK_RQT
|
955 APMG_CLK_VAL_BSM_CLK_RQT
);
959 iwl_set_bits_prph(priv
, APMG_PCIDEV_STT_REG
,
960 APMG_PCIDEV_STT_VAL_L1_ACT_DIS
);
962 iwl_release_nic_access(priv
);
965 clear_bit(STATUS_HCMD_ACTIVE
, &priv
->status
);
966 wake_up_interruptible(&priv
->wait_command_queue
);
968 spin_unlock_irqrestore(&priv
->lock
, flags
);
974 #define REG_RECALIB_PERIOD (60)
977 * iwl4965_bg_statistics_periodic - Timer callback to queue statistics
979 * This callback is provided in order to send a statistics request.
981 * This timer function is continually reset to execute within
982 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
983 * was received. We need to ensure we receive the statistics in order
984 * to update the temperature used for calibrating the TXPOWER.
986 static void iwl4965_bg_statistics_periodic(unsigned long data
)
988 struct iwl_priv
*priv
= (struct iwl_priv
*)data
;
990 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
993 iwl_send_statistics_request(priv
, CMD_ASYNC
);
996 #define CT_LIMIT_CONST 259
997 #define TM_CT_KILL_THRESHOLD 110
999 void iwl4965_rf_kill_ct_config(struct iwl_priv
*priv
)
1001 struct iwl4965_ct_kill_config cmd
;
1004 u32 crit_temperature
;
1005 unsigned long flags
;
1008 spin_lock_irqsave(&priv
->lock
, flags
);
1009 iwl_write32(priv
, CSR_UCODE_DRV_GP1_CLR
,
1010 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT
);
1011 spin_unlock_irqrestore(&priv
->lock
, flags
);
1013 if (priv
->statistics
.flag
& STATISTICS_REPLY_FLG_FAT_MODE_MSK
) {
1014 R1
= (s32
)le32_to_cpu(priv
->card_alive_init
.therm_r1
[1]);
1015 R2
= (s32
)le32_to_cpu(priv
->card_alive_init
.therm_r2
[1]);
1016 R3
= (s32
)le32_to_cpu(priv
->card_alive_init
.therm_r3
[1]);
1018 R1
= (s32
)le32_to_cpu(priv
->card_alive_init
.therm_r1
[0]);
1019 R2
= (s32
)le32_to_cpu(priv
->card_alive_init
.therm_r2
[0]);
1020 R3
= (s32
)le32_to_cpu(priv
->card_alive_init
.therm_r3
[0]);
1023 temp_th
= CELSIUS_TO_KELVIN(TM_CT_KILL_THRESHOLD
);
1025 crit_temperature
= ((temp_th
* (R3
-R1
))/CT_LIMIT_CONST
) + R2
;
1026 cmd
.critical_temperature_R
= cpu_to_le32(crit_temperature
);
1027 ret
= iwl_send_cmd_pdu(priv
, REPLY_CT_KILL_CONFIG_CMD
,
1030 IWL_ERROR("REPLY_CT_KILL_CONFIG_CMD failed\n");
1032 IWL_DEBUG_INFO("REPLY_CT_KILL_CONFIG_CMD succeeded\n");
1035 #ifdef CONFIG_IWL4965_SENSITIVITY
1037 /* "false alarms" are signals that our DSP tries to lock onto,
1038 * but then determines that they are either noise, or transmissions
1039 * from a distant wireless network (also "noise", really) that get
1040 * "stepped on" by stronger transmissions within our own network.
1041 * This algorithm attempts to set a sensitivity level that is high
1042 * enough to receive all of our own network traffic, but not so
1043 * high that our DSP gets too busy trying to lock onto non-network
1044 * activity/noise. */
1045 static int iwl4965_sens_energy_cck(struct iwl_priv
*priv
,
1048 struct statistics_general_data
*rx_info
)
1050 u32 max_nrg_cck
= 0;
1052 u8 max_silence_rssi
= 0;
1053 u32 silence_ref
= 0;
1054 u8 silence_rssi_a
= 0;
1055 u8 silence_rssi_b
= 0;
1056 u8 silence_rssi_c
= 0;
1059 /* "false_alarms" values below are cross-multiplications to assess the
1060 * numbers of false alarms within the measured period of actual Rx
1061 * (Rx is off when we're txing), vs the min/max expected false alarms
1062 * (some should be expected if rx is sensitive enough) in a
1063 * hypothetical listening period of 200 time units (TU), 204.8 msec:
1065 * MIN_FA/fixed-time < false_alarms/actual-rx-time < MAX_FA/beacon-time
1068 u32 false_alarms
= norm_fa
* 200 * 1024;
1069 u32 max_false_alarms
= MAX_FA_CCK
* rx_enable_time
;
1070 u32 min_false_alarms
= MIN_FA_CCK
* rx_enable_time
;
1071 struct iwl4965_sensitivity_data
*data
= NULL
;
1073 data
= &(priv
->sensitivity_data
);
1075 data
->nrg_auto_corr_silence_diff
= 0;
1077 /* Find max silence rssi among all 3 receivers.
1078 * This is background noise, which may include transmissions from other
1079 * networks, measured during silence before our network's beacon */
1080 silence_rssi_a
= (u8
)((rx_info
->beacon_silence_rssi_a
&
1081 ALL_BAND_FILTER
) >> 8);
1082 silence_rssi_b
= (u8
)((rx_info
->beacon_silence_rssi_b
&
1083 ALL_BAND_FILTER
) >> 8);
1084 silence_rssi_c
= (u8
)((rx_info
->beacon_silence_rssi_c
&
1085 ALL_BAND_FILTER
) >> 8);
1087 val
= max(silence_rssi_b
, silence_rssi_c
);
1088 max_silence_rssi
= max(silence_rssi_a
, (u8
) val
);
1090 /* Store silence rssi in 20-beacon history table */
1091 data
->nrg_silence_rssi
[data
->nrg_silence_idx
] = max_silence_rssi
;
1092 data
->nrg_silence_idx
++;
1093 if (data
->nrg_silence_idx
>= NRG_NUM_PREV_STAT_L
)
1094 data
->nrg_silence_idx
= 0;
1096 /* Find max silence rssi across 20 beacon history */
1097 for (i
= 0; i
< NRG_NUM_PREV_STAT_L
; i
++) {
1098 val
= data
->nrg_silence_rssi
[i
];
1099 silence_ref
= max(silence_ref
, val
);
1101 IWL_DEBUG_CALIB("silence a %u, b %u, c %u, 20-bcn max %u\n",
1102 silence_rssi_a
, silence_rssi_b
, silence_rssi_c
,
1105 /* Find max rx energy (min value!) among all 3 receivers,
1106 * measured during beacon frame.
1107 * Save it in 10-beacon history table. */
1108 i
= data
->nrg_energy_idx
;
1109 val
= min(rx_info
->beacon_energy_b
, rx_info
->beacon_energy_c
);
1110 data
->nrg_value
[i
] = min(rx_info
->beacon_energy_a
, val
);
1112 data
->nrg_energy_idx
++;
1113 if (data
->nrg_energy_idx
>= 10)
1114 data
->nrg_energy_idx
= 0;
1116 /* Find min rx energy (max value) across 10 beacon history.
1117 * This is the minimum signal level that we want to receive well.
1118 * Add backoff (margin so we don't miss slightly lower energy frames).
1119 * This establishes an upper bound (min value) for energy threshold. */
1120 max_nrg_cck
= data
->nrg_value
[0];
1121 for (i
= 1; i
< 10; i
++)
1122 max_nrg_cck
= (u32
) max(max_nrg_cck
, (data
->nrg_value
[i
]));
1125 IWL_DEBUG_CALIB("rx energy a %u, b %u, c %u, 10-bcn max/min %u\n",
1126 rx_info
->beacon_energy_a
, rx_info
->beacon_energy_b
,
1127 rx_info
->beacon_energy_c
, max_nrg_cck
- 6);
1129 /* Count number of consecutive beacons with fewer-than-desired
1131 if (false_alarms
< min_false_alarms
)
1132 data
->num_in_cck_no_fa
++;
1134 data
->num_in_cck_no_fa
= 0;
1135 IWL_DEBUG_CALIB("consecutive bcns with few false alarms = %u\n",
1136 data
->num_in_cck_no_fa
);
1138 /* If we got too many false alarms this time, reduce sensitivity */
1139 if (false_alarms
> max_false_alarms
) {
1140 IWL_DEBUG_CALIB("norm FA %u > max FA %u\n",
1141 false_alarms
, max_false_alarms
);
1142 IWL_DEBUG_CALIB("... reducing sensitivity\n");
1143 data
->nrg_curr_state
= IWL_FA_TOO_MANY
;
1145 if (data
->auto_corr_cck
> AUTO_CORR_MAX_TH_CCK
) {
1146 /* Store for "fewer than desired" on later beacon */
1147 data
->nrg_silence_ref
= silence_ref
;
1149 /* increase energy threshold (reduce nrg value)
1150 * to decrease sensitivity */
1151 if (data
->nrg_th_cck
> (NRG_MAX_CCK
+ NRG_STEP_CCK
))
1152 data
->nrg_th_cck
= data
->nrg_th_cck
1156 /* increase auto_corr values to decrease sensitivity */
1157 if (data
->auto_corr_cck
< AUTO_CORR_MAX_TH_CCK
)
1158 data
->auto_corr_cck
= AUTO_CORR_MAX_TH_CCK
+ 1;
1160 val
= data
->auto_corr_cck
+ AUTO_CORR_STEP_CCK
;
1161 data
->auto_corr_cck
= min((u32
)AUTO_CORR_MAX_CCK
, val
);
1163 val
= data
->auto_corr_cck_mrc
+ AUTO_CORR_STEP_CCK
;
1164 data
->auto_corr_cck_mrc
= min((u32
)AUTO_CORR_MAX_CCK_MRC
, val
);
1166 /* Else if we got fewer than desired, increase sensitivity */
1167 } else if (false_alarms
< min_false_alarms
) {
1168 data
->nrg_curr_state
= IWL_FA_TOO_FEW
;
1170 /* Compare silence level with silence level for most recent
1171 * healthy number or too many false alarms */
1172 data
->nrg_auto_corr_silence_diff
= (s32
)data
->nrg_silence_ref
-
1175 IWL_DEBUG_CALIB("norm FA %u < min FA %u, silence diff %d\n",
1176 false_alarms
, min_false_alarms
,
1177 data
->nrg_auto_corr_silence_diff
);
1179 /* Increase value to increase sensitivity, but only if:
1180 * 1a) previous beacon did *not* have *too many* false alarms
1181 * 1b) AND there's a significant difference in Rx levels
1182 * from a previous beacon with too many, or healthy # FAs
1183 * OR 2) We've seen a lot of beacons (100) with too few
1185 if ((data
->nrg_prev_state
!= IWL_FA_TOO_MANY
) &&
1186 ((data
->nrg_auto_corr_silence_diff
> NRG_DIFF
) ||
1187 (data
->num_in_cck_no_fa
> MAX_NUMBER_CCK_NO_FA
))) {
1189 IWL_DEBUG_CALIB("... increasing sensitivity\n");
1190 /* Increase nrg value to increase sensitivity */
1191 val
= data
->nrg_th_cck
+ NRG_STEP_CCK
;
1192 data
->nrg_th_cck
= min((u32
)NRG_MIN_CCK
, val
);
1194 /* Decrease auto_corr values to increase sensitivity */
1195 val
= data
->auto_corr_cck
- AUTO_CORR_STEP_CCK
;
1196 data
->auto_corr_cck
= max((u32
)AUTO_CORR_MIN_CCK
, val
);
1198 val
= data
->auto_corr_cck_mrc
- AUTO_CORR_STEP_CCK
;
1199 data
->auto_corr_cck_mrc
=
1200 max((u32
)AUTO_CORR_MIN_CCK_MRC
, val
);
1203 IWL_DEBUG_CALIB("... but not changing sensitivity\n");
1205 /* Else we got a healthy number of false alarms, keep status quo */
1207 IWL_DEBUG_CALIB(" FA in safe zone\n");
1208 data
->nrg_curr_state
= IWL_FA_GOOD_RANGE
;
1210 /* Store for use in "fewer than desired" with later beacon */
1211 data
->nrg_silence_ref
= silence_ref
;
1213 /* If previous beacon had too many false alarms,
1214 * give it some extra margin by reducing sensitivity again
1215 * (but don't go below measured energy of desired Rx) */
1216 if (IWL_FA_TOO_MANY
== data
->nrg_prev_state
) {
1217 IWL_DEBUG_CALIB("... increasing margin\n");
1218 data
->nrg_th_cck
-= NRG_MARGIN
;
1222 /* Make sure the energy threshold does not go above the measured
1223 * energy of the desired Rx signals (reduced by backoff margin),
1224 * or else we might start missing Rx frames.
1225 * Lower value is higher energy, so we use max()!
1227 data
->nrg_th_cck
= max(max_nrg_cck
, data
->nrg_th_cck
);
1228 IWL_DEBUG_CALIB("new nrg_th_cck %u\n", data
->nrg_th_cck
);
1230 data
->nrg_prev_state
= data
->nrg_curr_state
;
1236 static int iwl4965_sens_auto_corr_ofdm(struct iwl_priv
*priv
,
1241 u32 false_alarms
= norm_fa
* 200 * 1024;
1242 u32 max_false_alarms
= MAX_FA_OFDM
* rx_enable_time
;
1243 u32 min_false_alarms
= MIN_FA_OFDM
* rx_enable_time
;
1244 struct iwl4965_sensitivity_data
*data
= NULL
;
1246 data
= &(priv
->sensitivity_data
);
1248 /* If we got too many false alarms this time, reduce sensitivity */
1249 if (false_alarms
> max_false_alarms
) {
1251 IWL_DEBUG_CALIB("norm FA %u > max FA %u)\n",
1252 false_alarms
, max_false_alarms
);
1254 val
= data
->auto_corr_ofdm
+ AUTO_CORR_STEP_OFDM
;
1255 data
->auto_corr_ofdm
=
1256 min((u32
)AUTO_CORR_MAX_OFDM
, val
);
1258 val
= data
->auto_corr_ofdm_mrc
+ AUTO_CORR_STEP_OFDM
;
1259 data
->auto_corr_ofdm_mrc
=
1260 min((u32
)AUTO_CORR_MAX_OFDM_MRC
, val
);
1262 val
= data
->auto_corr_ofdm_x1
+ AUTO_CORR_STEP_OFDM
;
1263 data
->auto_corr_ofdm_x1
=
1264 min((u32
)AUTO_CORR_MAX_OFDM_X1
, val
);
1266 val
= data
->auto_corr_ofdm_mrc_x1
+ AUTO_CORR_STEP_OFDM
;
1267 data
->auto_corr_ofdm_mrc_x1
=
1268 min((u32
)AUTO_CORR_MAX_OFDM_MRC_X1
, val
);
1271 /* Else if we got fewer than desired, increase sensitivity */
1272 else if (false_alarms
< min_false_alarms
) {
1274 IWL_DEBUG_CALIB("norm FA %u < min FA %u\n",
1275 false_alarms
, min_false_alarms
);
1277 val
= data
->auto_corr_ofdm
- AUTO_CORR_STEP_OFDM
;
1278 data
->auto_corr_ofdm
=
1279 max((u32
)AUTO_CORR_MIN_OFDM
, val
);
1281 val
= data
->auto_corr_ofdm_mrc
- AUTO_CORR_STEP_OFDM
;
1282 data
->auto_corr_ofdm_mrc
=
1283 max((u32
)AUTO_CORR_MIN_OFDM_MRC
, val
);
1285 val
= data
->auto_corr_ofdm_x1
- AUTO_CORR_STEP_OFDM
;
1286 data
->auto_corr_ofdm_x1
=
1287 max((u32
)AUTO_CORR_MIN_OFDM_X1
, val
);
1289 val
= data
->auto_corr_ofdm_mrc_x1
- AUTO_CORR_STEP_OFDM
;
1290 data
->auto_corr_ofdm_mrc_x1
=
1291 max((u32
)AUTO_CORR_MIN_OFDM_MRC_X1
, val
);
1295 IWL_DEBUG_CALIB("min FA %u < norm FA %u < max FA %u OK\n",
1296 min_false_alarms
, false_alarms
, max_false_alarms
);
1301 static int iwl4965_sensitivity_callback(struct iwl_priv
*priv
,
1302 struct iwl_cmd
*cmd
, struct sk_buff
*skb
)
1304 /* We didn't cache the SKB; let the caller free it */
1308 /* Prepare a SENSITIVITY_CMD, send to uCode if values have changed */
1309 static int iwl4965_sensitivity_write(struct iwl_priv
*priv
, u8 flags
)
1311 struct iwl4965_sensitivity_cmd cmd
;
1312 struct iwl4965_sensitivity_data
*data
= NULL
;
1313 struct iwl_host_cmd cmd_out
= {
1314 .id
= SENSITIVITY_CMD
,
1315 .len
= sizeof(struct iwl4965_sensitivity_cmd
),
1316 .meta
.flags
= flags
,
1321 data
= &(priv
->sensitivity_data
);
1323 memset(&cmd
, 0, sizeof(cmd
));
1325 cmd
.table
[HD_AUTO_CORR32_X4_TH_ADD_MIN_INDEX
] =
1326 cpu_to_le16((u16
)data
->auto_corr_ofdm
);
1327 cmd
.table
[HD_AUTO_CORR32_X4_TH_ADD_MIN_MRC_INDEX
] =
1328 cpu_to_le16((u16
)data
->auto_corr_ofdm_mrc
);
1329 cmd
.table
[HD_AUTO_CORR32_X1_TH_ADD_MIN_INDEX
] =
1330 cpu_to_le16((u16
)data
->auto_corr_ofdm_x1
);
1331 cmd
.table
[HD_AUTO_CORR32_X1_TH_ADD_MIN_MRC_INDEX
] =
1332 cpu_to_le16((u16
)data
->auto_corr_ofdm_mrc_x1
);
1334 cmd
.table
[HD_AUTO_CORR40_X4_TH_ADD_MIN_INDEX
] =
1335 cpu_to_le16((u16
)data
->auto_corr_cck
);
1336 cmd
.table
[HD_AUTO_CORR40_X4_TH_ADD_MIN_MRC_INDEX
] =
1337 cpu_to_le16((u16
)data
->auto_corr_cck_mrc
);
1339 cmd
.table
[HD_MIN_ENERGY_CCK_DET_INDEX
] =
1340 cpu_to_le16((u16
)data
->nrg_th_cck
);
1341 cmd
.table
[HD_MIN_ENERGY_OFDM_DET_INDEX
] =
1342 cpu_to_le16((u16
)data
->nrg_th_ofdm
);
1344 cmd
.table
[HD_BARKER_CORR_TH_ADD_MIN_INDEX
] =
1345 __constant_cpu_to_le16(190);
1346 cmd
.table
[HD_BARKER_CORR_TH_ADD_MIN_MRC_INDEX
] =
1347 __constant_cpu_to_le16(390);
1348 cmd
.table
[HD_OFDM_ENERGY_TH_IN_INDEX
] =
1349 __constant_cpu_to_le16(62);
1351 IWL_DEBUG_CALIB("ofdm: ac %u mrc %u x1 %u mrc_x1 %u thresh %u\n",
1352 data
->auto_corr_ofdm
, data
->auto_corr_ofdm_mrc
,
1353 data
->auto_corr_ofdm_x1
, data
->auto_corr_ofdm_mrc_x1
,
1356 IWL_DEBUG_CALIB("cck: ac %u mrc %u thresh %u\n",
1357 data
->auto_corr_cck
, data
->auto_corr_cck_mrc
,
1360 /* Update uCode's "work" table, and copy it to DSP */
1361 cmd
.control
= SENSITIVITY_CMD_CONTROL_WORK_TABLE
;
1363 if (flags
& CMD_ASYNC
)
1364 cmd_out
.meta
.u
.callback
= iwl4965_sensitivity_callback
;
1366 /* Don't send command to uCode if nothing has changed */
1367 if (!memcmp(&cmd
.table
[0], &(priv
->sensitivity_tbl
[0]),
1368 sizeof(u16
)*HD_TABLE_SIZE
)) {
1369 IWL_DEBUG_CALIB("No change in SENSITIVITY_CMD\n");
1373 /* Copy table for comparison next time */
1374 memcpy(&(priv
->sensitivity_tbl
[0]), &(cmd
.table
[0]),
1375 sizeof(u16
)*HD_TABLE_SIZE
);
1377 ret
= iwl_send_cmd(priv
, &cmd_out
);
1379 IWL_ERROR("SENSITIVITY_CMD failed\n");
1384 void iwl4965_init_sensitivity(struct iwl_priv
*priv
, u8 flags
, u8 force
)
1386 struct iwl4965_sensitivity_data
*data
= NULL
;
1390 IWL_DEBUG_CALIB("Start iwl4965_init_sensitivity\n");
1393 memset(&(priv
->sensitivity_tbl
[0]), 0,
1394 sizeof(u16
)*HD_TABLE_SIZE
);
1396 /* Clear driver's sensitivity algo data */
1397 data
= &(priv
->sensitivity_data
);
1398 memset(data
, 0, sizeof(struct iwl4965_sensitivity_data
));
1400 data
->num_in_cck_no_fa
= 0;
1401 data
->nrg_curr_state
= IWL_FA_TOO_MANY
;
1402 data
->nrg_prev_state
= IWL_FA_TOO_MANY
;
1403 data
->nrg_silence_ref
= 0;
1404 data
->nrg_silence_idx
= 0;
1405 data
->nrg_energy_idx
= 0;
1407 for (i
= 0; i
< 10; i
++)
1408 data
->nrg_value
[i
] = 0;
1410 for (i
= 0; i
< NRG_NUM_PREV_STAT_L
; i
++)
1411 data
->nrg_silence_rssi
[i
] = 0;
1413 data
->auto_corr_ofdm
= 90;
1414 data
->auto_corr_ofdm_mrc
= 170;
1415 data
->auto_corr_ofdm_x1
= 105;
1416 data
->auto_corr_ofdm_mrc_x1
= 220;
1417 data
->auto_corr_cck
= AUTO_CORR_CCK_MIN_VAL_DEF
;
1418 data
->auto_corr_cck_mrc
= 200;
1419 data
->nrg_th_cck
= 100;
1420 data
->nrg_th_ofdm
= 100;
1422 data
->last_bad_plcp_cnt_ofdm
= 0;
1423 data
->last_fa_cnt_ofdm
= 0;
1424 data
->last_bad_plcp_cnt_cck
= 0;
1425 data
->last_fa_cnt_cck
= 0;
1427 /* Clear prior Sensitivity command data to force send to uCode */
1429 memset(&(priv
->sensitivity_tbl
[0]), 0,
1430 sizeof(u16
)*HD_TABLE_SIZE
);
1432 ret
|= iwl4965_sensitivity_write(priv
, flags
);
1433 IWL_DEBUG_CALIB("<<return 0x%X\n", ret
);
1439 /* Reset differential Rx gains in NIC to prepare for chain noise calibration.
1440 * Called after every association, but this runs only once!
1441 * ... once chain noise is calibrated the first time, it's good forever. */
1442 void iwl4965_chain_noise_reset(struct iwl_priv
*priv
)
1444 struct iwl4965_chain_noise_data
*data
= NULL
;
1446 data
= &(priv
->chain_noise_data
);
1447 if ((data
->state
== IWL_CHAIN_NOISE_ALIVE
) && iwl_is_associated(priv
)) {
1448 struct iwl4965_calibration_cmd cmd
;
1450 memset(&cmd
, 0, sizeof(cmd
));
1451 cmd
.opCode
= PHY_CALIBRATE_DIFF_GAIN_CMD
;
1452 cmd
.diff_gain_a
= 0;
1453 cmd
.diff_gain_b
= 0;
1454 cmd
.diff_gain_c
= 0;
1455 iwl_send_cmd_pdu_async(priv
, REPLY_PHY_CALIBRATION_CMD
,
1456 sizeof(cmd
), &cmd
, NULL
);
1458 data
->state
= IWL_CHAIN_NOISE_ACCUMULATE
;
1459 IWL_DEBUG_CALIB("Run chain_noise_calibrate\n");
1465 * Accumulate 20 beacons of signal and noise statistics for each of
1466 * 3 receivers/antennas/rx-chains, then figure out:
1467 * 1) Which antennas are connected.
1468 * 2) Differential rx gain settings to balance the 3 receivers.
1470 static void iwl4965_noise_calibration(struct iwl_priv
*priv
,
1471 struct iwl4965_notif_statistics
*stat_resp
)
1473 struct iwl4965_chain_noise_data
*data
= NULL
;
1482 u32 average_sig
[NUM_RX_CHAINS
] = {INITIALIZATION_VALUE
};
1483 u32 average_noise
[NUM_RX_CHAINS
] = {INITIALIZATION_VALUE
};
1484 u32 max_average_sig
;
1485 u16 max_average_sig_antenna_i
;
1486 u32 min_average_noise
= MIN_AVERAGE_NOISE_MAX_VALUE
;
1487 u16 min_average_noise_antenna_i
= INITIALIZATION_VALUE
;
1489 u16 chan_num
= INITIALIZATION_VALUE
;
1490 u32 band
= INITIALIZATION_VALUE
;
1491 u32 active_chains
= 0;
1492 unsigned long flags
;
1493 struct statistics_rx_non_phy
*rx_info
= &(stat_resp
->rx
.general
);
1495 data
= &(priv
->chain_noise_data
);
1497 /* Accumulate just the first 20 beacons after the first association,
1498 * then we're done forever. */
1499 if (data
->state
!= IWL_CHAIN_NOISE_ACCUMULATE
) {
1500 if (data
->state
== IWL_CHAIN_NOISE_ALIVE
)
1501 IWL_DEBUG_CALIB("Wait for noise calib reset\n");
1505 spin_lock_irqsave(&priv
->lock
, flags
);
1506 if (rx_info
->interference_data_flag
!= INTERFERENCE_DATA_AVAILABLE
) {
1507 IWL_DEBUG_CALIB(" << Interference data unavailable\n");
1508 spin_unlock_irqrestore(&priv
->lock
, flags
);
1512 band
= (priv
->staging_rxon
.flags
& RXON_FLG_BAND_24G_MSK
) ? 0 : 1;
1513 chan_num
= le16_to_cpu(priv
->staging_rxon
.channel
);
1515 /* Make sure we accumulate data for just the associated channel
1516 * (even if scanning). */
1517 if ((chan_num
!= (le32_to_cpu(stat_resp
->flag
) >> 16)) ||
1518 ((STATISTICS_REPLY_FLG_BAND_24G_MSK
==
1519 (stat_resp
->flag
& STATISTICS_REPLY_FLG_BAND_24G_MSK
)) && band
)) {
1520 IWL_DEBUG_CALIB("Stats not from chan=%d, band=%d\n",
1522 spin_unlock_irqrestore(&priv
->lock
, flags
);
1526 /* Accumulate beacon statistics values across 20 beacons */
1527 chain_noise_a
= le32_to_cpu(rx_info
->beacon_silence_rssi_a
) &
1529 chain_noise_b
= le32_to_cpu(rx_info
->beacon_silence_rssi_b
) &
1531 chain_noise_c
= le32_to_cpu(rx_info
->beacon_silence_rssi_c
) &
1534 chain_sig_a
= le32_to_cpu(rx_info
->beacon_rssi_a
) & IN_BAND_FILTER
;
1535 chain_sig_b
= le32_to_cpu(rx_info
->beacon_rssi_b
) & IN_BAND_FILTER
;
1536 chain_sig_c
= le32_to_cpu(rx_info
->beacon_rssi_c
) & IN_BAND_FILTER
;
1538 spin_unlock_irqrestore(&priv
->lock
, flags
);
1540 data
->beacon_count
++;
1542 data
->chain_noise_a
= (chain_noise_a
+ data
->chain_noise_a
);
1543 data
->chain_noise_b
= (chain_noise_b
+ data
->chain_noise_b
);
1544 data
->chain_noise_c
= (chain_noise_c
+ data
->chain_noise_c
);
1546 data
->chain_signal_a
= (chain_sig_a
+ data
->chain_signal_a
);
1547 data
->chain_signal_b
= (chain_sig_b
+ data
->chain_signal_b
);
1548 data
->chain_signal_c
= (chain_sig_c
+ data
->chain_signal_c
);
1550 IWL_DEBUG_CALIB("chan=%d, band=%d, beacon=%d\n", chan_num
, band
,
1551 data
->beacon_count
);
1552 IWL_DEBUG_CALIB("chain_sig: a %d b %d c %d\n",
1553 chain_sig_a
, chain_sig_b
, chain_sig_c
);
1554 IWL_DEBUG_CALIB("chain_noise: a %d b %d c %d\n",
1555 chain_noise_a
, chain_noise_b
, chain_noise_c
);
1557 /* If this is the 20th beacon, determine:
1558 * 1) Disconnected antennas (using signal strengths)
1559 * 2) Differential gain (using silence noise) to balance receivers */
1560 if (data
->beacon_count
== CAL_NUM_OF_BEACONS
) {
1562 /* Analyze signal for disconnected antenna */
1563 average_sig
[0] = (data
->chain_signal_a
) / CAL_NUM_OF_BEACONS
;
1564 average_sig
[1] = (data
->chain_signal_b
) / CAL_NUM_OF_BEACONS
;
1565 average_sig
[2] = (data
->chain_signal_c
) / CAL_NUM_OF_BEACONS
;
1567 if (average_sig
[0] >= average_sig
[1]) {
1568 max_average_sig
= average_sig
[0];
1569 max_average_sig_antenna_i
= 0;
1570 active_chains
= (1 << max_average_sig_antenna_i
);
1572 max_average_sig
= average_sig
[1];
1573 max_average_sig_antenna_i
= 1;
1574 active_chains
= (1 << max_average_sig_antenna_i
);
1577 if (average_sig
[2] >= max_average_sig
) {
1578 max_average_sig
= average_sig
[2];
1579 max_average_sig_antenna_i
= 2;
1580 active_chains
= (1 << max_average_sig_antenna_i
);
1583 IWL_DEBUG_CALIB("average_sig: a %d b %d c %d\n",
1584 average_sig
[0], average_sig
[1], average_sig
[2]);
1585 IWL_DEBUG_CALIB("max_average_sig = %d, antenna %d\n",
1586 max_average_sig
, max_average_sig_antenna_i
);
1588 /* Compare signal strengths for all 3 receivers. */
1589 for (i
= 0; i
< NUM_RX_CHAINS
; i
++) {
1590 if (i
!= max_average_sig_antenna_i
) {
1591 s32 rssi_delta
= (max_average_sig
-
1594 /* If signal is very weak, compared with
1595 * strongest, mark it as disconnected. */
1596 if (rssi_delta
> MAXIMUM_ALLOWED_PATHLOSS
)
1597 data
->disconn_array
[i
] = 1;
1599 active_chains
|= (1 << i
);
1600 IWL_DEBUG_CALIB("i = %d rssiDelta = %d "
1601 "disconn_array[i] = %d\n",
1602 i
, rssi_delta
, data
->disconn_array
[i
]);
1606 /*If both chains A & B are disconnected -
1607 * connect B and leave A as is */
1608 if (data
->disconn_array
[CHAIN_A
] &&
1609 data
->disconn_array
[CHAIN_B
]) {
1610 data
->disconn_array
[CHAIN_B
] = 0;
1611 active_chains
|= (1 << CHAIN_B
);
1612 IWL_DEBUG_CALIB("both A & B chains are disconnected! "
1613 "W/A - declare B as connected\n");
1616 IWL_DEBUG_CALIB("active_chains (bitwise) = 0x%x\n",
1619 /* Save for use within RXON, TX, SCAN commands, etc. */
1620 priv
->valid_antenna
= active_chains
;
1622 /* Analyze noise for rx balance */
1623 average_noise
[0] = ((data
->chain_noise_a
)/CAL_NUM_OF_BEACONS
);
1624 average_noise
[1] = ((data
->chain_noise_b
)/CAL_NUM_OF_BEACONS
);
1625 average_noise
[2] = ((data
->chain_noise_c
)/CAL_NUM_OF_BEACONS
);
1627 for (i
= 0; i
< NUM_RX_CHAINS
; i
++) {
1628 if (!(data
->disconn_array
[i
]) &&
1629 (average_noise
[i
] <= min_average_noise
)) {
1630 /* This means that chain i is active and has
1631 * lower noise values so far: */
1632 min_average_noise
= average_noise
[i
];
1633 min_average_noise_antenna_i
= i
;
1637 data
->delta_gain_code
[min_average_noise_antenna_i
] = 0;
1639 IWL_DEBUG_CALIB("average_noise: a %d b %d c %d\n",
1640 average_noise
[0], average_noise
[1],
1643 IWL_DEBUG_CALIB("min_average_noise = %d, antenna %d\n",
1644 min_average_noise
, min_average_noise_antenna_i
);
1646 for (i
= 0; i
< NUM_RX_CHAINS
; i
++) {
1649 if (!(data
->disconn_array
[i
]) &&
1650 (data
->delta_gain_code
[i
] ==
1651 CHAIN_NOISE_DELTA_GAIN_INIT_VAL
)) {
1652 delta_g
= average_noise
[i
] - min_average_noise
;
1653 data
->delta_gain_code
[i
] = (u8
)((delta_g
*
1655 if (CHAIN_NOISE_MAX_DELTA_GAIN_CODE
<
1656 data
->delta_gain_code
[i
])
1657 data
->delta_gain_code
[i
] =
1658 CHAIN_NOISE_MAX_DELTA_GAIN_CODE
;
1660 data
->delta_gain_code
[i
] =
1661 (data
->delta_gain_code
[i
] | (1 << 2));
1663 data
->delta_gain_code
[i
] = 0;
1665 IWL_DEBUG_CALIB("delta_gain_codes: a %d b %d c %d\n",
1666 data
->delta_gain_code
[0],
1667 data
->delta_gain_code
[1],
1668 data
->delta_gain_code
[2]);
1670 /* Differential gain gets sent to uCode only once */
1671 if (!data
->radio_write
) {
1672 struct iwl4965_calibration_cmd cmd
;
1673 data
->radio_write
= 1;
1675 memset(&cmd
, 0, sizeof(cmd
));
1676 cmd
.opCode
= PHY_CALIBRATE_DIFF_GAIN_CMD
;
1677 cmd
.diff_gain_a
= data
->delta_gain_code
[0];
1678 cmd
.diff_gain_b
= data
->delta_gain_code
[1];
1679 cmd
.diff_gain_c
= data
->delta_gain_code
[2];
1680 ret
= iwl_send_cmd_pdu(priv
, REPLY_PHY_CALIBRATION_CMD
,
1683 IWL_DEBUG_CALIB("fail sending cmd "
1684 "REPLY_PHY_CALIBRATION_CMD \n");
1686 /* TODO we might want recalculate
1687 * rx_chain in rxon cmd */
1689 /* Mark so we run this algo only once! */
1690 data
->state
= IWL_CHAIN_NOISE_CALIBRATED
;
1692 data
->chain_noise_a
= 0;
1693 data
->chain_noise_b
= 0;
1694 data
->chain_noise_c
= 0;
1695 data
->chain_signal_a
= 0;
1696 data
->chain_signal_b
= 0;
1697 data
->chain_signal_c
= 0;
1698 data
->beacon_count
= 0;
1703 static void iwl4965_sensitivity_calibration(struct iwl_priv
*priv
,
1704 struct iwl4965_notif_statistics
*resp
)
1713 struct iwl4965_sensitivity_data
*data
= NULL
;
1714 struct statistics_rx_non_phy
*rx_info
= &(resp
->rx
.general
);
1715 struct statistics_rx
*statistics
= &(resp
->rx
);
1716 unsigned long flags
;
1717 struct statistics_general_data statis
;
1720 data
= &(priv
->sensitivity_data
);
1722 if (!iwl_is_associated(priv
)) {
1723 IWL_DEBUG_CALIB("<< - not associated\n");
1727 spin_lock_irqsave(&priv
->lock
, flags
);
1728 if (rx_info
->interference_data_flag
!= INTERFERENCE_DATA_AVAILABLE
) {
1729 IWL_DEBUG_CALIB("<< invalid data.\n");
1730 spin_unlock_irqrestore(&priv
->lock
, flags
);
1734 /* Extract Statistics: */
1735 rx_enable_time
= le32_to_cpu(rx_info
->channel_load
);
1736 fa_cck
= le32_to_cpu(statistics
->cck
.false_alarm_cnt
);
1737 fa_ofdm
= le32_to_cpu(statistics
->ofdm
.false_alarm_cnt
);
1738 bad_plcp_cck
= le32_to_cpu(statistics
->cck
.plcp_err
);
1739 bad_plcp_ofdm
= le32_to_cpu(statistics
->ofdm
.plcp_err
);
1741 statis
.beacon_silence_rssi_a
=
1742 le32_to_cpu(statistics
->general
.beacon_silence_rssi_a
);
1743 statis
.beacon_silence_rssi_b
=
1744 le32_to_cpu(statistics
->general
.beacon_silence_rssi_b
);
1745 statis
.beacon_silence_rssi_c
=
1746 le32_to_cpu(statistics
->general
.beacon_silence_rssi_c
);
1747 statis
.beacon_energy_a
=
1748 le32_to_cpu(statistics
->general
.beacon_energy_a
);
1749 statis
.beacon_energy_b
=
1750 le32_to_cpu(statistics
->general
.beacon_energy_b
);
1751 statis
.beacon_energy_c
=
1752 le32_to_cpu(statistics
->general
.beacon_energy_c
);
1754 spin_unlock_irqrestore(&priv
->lock
, flags
);
1756 IWL_DEBUG_CALIB("rx_enable_time = %u usecs\n", rx_enable_time
);
1758 if (!rx_enable_time
) {
1759 IWL_DEBUG_CALIB("<< RX Enable Time == 0! \n");
1763 /* These statistics increase monotonically, and do not reset
1764 * at each beacon. Calculate difference from last value, or just
1765 * use the new statistics value if it has reset or wrapped around. */
1766 if (data
->last_bad_plcp_cnt_cck
> bad_plcp_cck
)
1767 data
->last_bad_plcp_cnt_cck
= bad_plcp_cck
;
1769 bad_plcp_cck
-= data
->last_bad_plcp_cnt_cck
;
1770 data
->last_bad_plcp_cnt_cck
+= bad_plcp_cck
;
1773 if (data
->last_bad_plcp_cnt_ofdm
> bad_plcp_ofdm
)
1774 data
->last_bad_plcp_cnt_ofdm
= bad_plcp_ofdm
;
1776 bad_plcp_ofdm
-= data
->last_bad_plcp_cnt_ofdm
;
1777 data
->last_bad_plcp_cnt_ofdm
+= bad_plcp_ofdm
;
1780 if (data
->last_fa_cnt_ofdm
> fa_ofdm
)
1781 data
->last_fa_cnt_ofdm
= fa_ofdm
;
1783 fa_ofdm
-= data
->last_fa_cnt_ofdm
;
1784 data
->last_fa_cnt_ofdm
+= fa_ofdm
;
1787 if (data
->last_fa_cnt_cck
> fa_cck
)
1788 data
->last_fa_cnt_cck
= fa_cck
;
1790 fa_cck
-= data
->last_fa_cnt_cck
;
1791 data
->last_fa_cnt_cck
+= fa_cck
;
1794 /* Total aborted signal locks */
1795 norm_fa_ofdm
= fa_ofdm
+ bad_plcp_ofdm
;
1796 norm_fa_cck
= fa_cck
+ bad_plcp_cck
;
1798 IWL_DEBUG_CALIB("cck: fa %u badp %u ofdm: fa %u badp %u\n", fa_cck
,
1799 bad_plcp_cck
, fa_ofdm
, bad_plcp_ofdm
);
1801 iwl4965_sens_auto_corr_ofdm(priv
, norm_fa_ofdm
, rx_enable_time
);
1802 iwl4965_sens_energy_cck(priv
, norm_fa_cck
, rx_enable_time
, &statis
);
1803 ret
= iwl4965_sensitivity_write(priv
, CMD_ASYNC
);
1808 static void iwl4965_bg_sensitivity_work(struct work_struct
*work
)
1810 struct iwl_priv
*priv
= container_of(work
, struct iwl_priv
,
1813 mutex_lock(&priv
->mutex
);
1815 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
) ||
1816 test_bit(STATUS_SCANNING
, &priv
->status
)) {
1817 mutex_unlock(&priv
->mutex
);
1821 if (priv
->start_calib
) {
1822 iwl4965_noise_calibration(priv
, &priv
->statistics
);
1824 if (priv
->sensitivity_data
.state
==
1825 IWL_SENS_CALIB_NEED_REINIT
) {
1826 iwl4965_init_sensitivity(priv
, CMD_ASYNC
, 0);
1827 priv
->sensitivity_data
.state
= IWL_SENS_CALIB_ALLOWED
;
1829 iwl4965_sensitivity_calibration(priv
,
1833 mutex_unlock(&priv
->mutex
);
1836 #endif /*CONFIG_IWL4965_SENSITIVITY*/
1838 static void iwl4965_bg_txpower_work(struct work_struct
*work
)
1840 struct iwl_priv
*priv
= container_of(work
, struct iwl_priv
,
1843 /* If a scan happened to start before we got here
1844 * then just return; the statistics notification will
1845 * kick off another scheduled work to compensate for
1846 * any temperature delta we missed here. */
1847 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
) ||
1848 test_bit(STATUS_SCANNING
, &priv
->status
))
1851 mutex_lock(&priv
->mutex
);
1853 /* Regardless of if we are assocaited, we must reconfigure the
1854 * TX power since frames can be sent on non-radar channels while
1856 iwl4965_hw_reg_send_txpower(priv
);
1858 /* Update last_temperature to keep is_calib_needed from running
1859 * when it isn't needed... */
1860 priv
->last_temperature
= priv
->temperature
;
1862 mutex_unlock(&priv
->mutex
);
1866 * Acquire priv->lock before calling this function !
1868 static void iwl4965_set_wr_ptrs(struct iwl_priv
*priv
, int txq_id
, u32 index
)
1870 iwl_write_direct32(priv
, HBUS_TARG_WRPTR
,
1871 (index
& 0xff) | (txq_id
<< 8));
1872 iwl_write_prph(priv
, IWL49_SCD_QUEUE_RDPTR(txq_id
), index
);
1876 * iwl4965_tx_queue_set_status - (optionally) start Tx/Cmd queue
1877 * @tx_fifo_id: Tx DMA/FIFO channel (range 0-7) that the queue will feed
1878 * @scd_retry: (1) Indicates queue will be used in aggregation mode
1880 * NOTE: Acquire priv->lock before calling this function !
1882 static void iwl4965_tx_queue_set_status(struct iwl_priv
*priv
,
1883 struct iwl4965_tx_queue
*txq
,
1884 int tx_fifo_id
, int scd_retry
)
1886 int txq_id
= txq
->q
.id
;
1888 /* Find out whether to activate Tx queue */
1889 int active
= test_bit(txq_id
, &priv
->txq_ctx_active_msk
)?1:0;
1891 /* Set up and activate */
1892 iwl_write_prph(priv
, IWL49_SCD_QUEUE_STATUS_BITS(txq_id
),
1893 (active
<< SCD_QUEUE_STTS_REG_POS_ACTIVE
) |
1894 (tx_fifo_id
<< SCD_QUEUE_STTS_REG_POS_TXF
) |
1895 (scd_retry
<< SCD_QUEUE_STTS_REG_POS_WSL
) |
1896 (scd_retry
<< SCD_QUEUE_STTS_REG_POS_SCD_ACK
) |
1897 SCD_QUEUE_STTS_REG_MSK
);
1899 txq
->sched_retry
= scd_retry
;
1901 IWL_DEBUG_INFO("%s %s Queue %d on AC %d\n",
1902 active
? "Activate" : "Deactivate",
1903 scd_retry
? "BA" : "AC", txq_id
, tx_fifo_id
);
1906 static const u16 default_queue_to_tx_fifo
[] = {
1916 static inline void iwl4965_txq_ctx_activate(struct iwl_priv
*priv
, int txq_id
)
1918 set_bit(txq_id
, &priv
->txq_ctx_active_msk
);
1921 static inline void iwl4965_txq_ctx_deactivate(struct iwl_priv
*priv
, int txq_id
)
1923 clear_bit(txq_id
, &priv
->txq_ctx_active_msk
);
1926 int iwl4965_alive_notify(struct iwl_priv
*priv
)
1930 unsigned long flags
;
1933 spin_lock_irqsave(&priv
->lock
, flags
);
1935 #ifdef CONFIG_IWL4965_SENSITIVITY
1936 memset(&(priv
->sensitivity_data
), 0,
1937 sizeof(struct iwl4965_sensitivity_data
));
1938 memset(&(priv
->chain_noise_data
), 0,
1939 sizeof(struct iwl4965_chain_noise_data
));
1940 for (i
= 0; i
< NUM_RX_CHAINS
; i
++)
1941 priv
->chain_noise_data
.delta_gain_code
[i
] =
1942 CHAIN_NOISE_DELTA_GAIN_INIT_VAL
;
1943 #endif /* CONFIG_IWL4965_SENSITIVITY*/
1944 ret
= iwl_grab_nic_access(priv
);
1946 spin_unlock_irqrestore(&priv
->lock
, flags
);
1950 /* Clear 4965's internal Tx Scheduler data base */
1951 priv
->scd_base_addr
= iwl_read_prph(priv
, IWL49_SCD_SRAM_BASE_ADDR
);
1952 a
= priv
->scd_base_addr
+ SCD_CONTEXT_DATA_OFFSET
;
1953 for (; a
< priv
->scd_base_addr
+ SCD_TX_STTS_BITMAP_OFFSET
; a
+= 4)
1954 iwl_write_targ_mem(priv
, a
, 0);
1955 for (; a
< priv
->scd_base_addr
+ SCD_TRANSLATE_TBL_OFFSET
; a
+= 4)
1956 iwl_write_targ_mem(priv
, a
, 0);
1957 for (; a
< sizeof(u16
) * priv
->hw_params
.max_txq_num
; a
+= 4)
1958 iwl_write_targ_mem(priv
, a
, 0);
1960 /* Tel 4965 where to find Tx byte count tables */
1961 iwl_write_prph(priv
, IWL49_SCD_DRAM_BASE_ADDR
,
1962 (priv
->shared_phys
+
1963 offsetof(struct iwl4965_shared
, queues_byte_cnt_tbls
)) >> 10);
1965 /* Disable chain mode for all queues */
1966 iwl_write_prph(priv
, IWL49_SCD_QUEUECHAIN_SEL
, 0);
1968 /* Initialize each Tx queue (including the command queue) */
1969 for (i
= 0; i
< priv
->hw_params
.max_txq_num
; i
++) {
1971 /* TFD circular buffer read/write indexes */
1972 iwl_write_prph(priv
, IWL49_SCD_QUEUE_RDPTR(i
), 0);
1973 iwl_write_direct32(priv
, HBUS_TARG_WRPTR
, 0 | (i
<< 8));
1975 /* Max Tx Window size for Scheduler-ACK mode */
1976 iwl_write_targ_mem(priv
, priv
->scd_base_addr
+
1977 SCD_CONTEXT_QUEUE_OFFSET(i
),
1979 SCD_QUEUE_CTX_REG1_WIN_SIZE_POS
) &
1980 SCD_QUEUE_CTX_REG1_WIN_SIZE_MSK
);
1983 iwl_write_targ_mem(priv
, priv
->scd_base_addr
+
1984 SCD_CONTEXT_QUEUE_OFFSET(i
) +
1987 SCD_QUEUE_CTX_REG2_FRAME_LIMIT_POS
) &
1988 SCD_QUEUE_CTX_REG2_FRAME_LIMIT_MSK
);
1991 iwl_write_prph(priv
, IWL49_SCD_INTERRUPT_MASK
,
1992 (1 << priv
->hw_params
.max_txq_num
) - 1);
1994 /* Activate all Tx DMA/FIFO channels */
1995 iwl_write_prph(priv
, IWL49_SCD_TXFACT
,
1996 SCD_TXFACT_REG_TXFIFO_MASK(0, 7));
1998 iwl4965_set_wr_ptrs(priv
, IWL_CMD_QUEUE_NUM
, 0);
2000 /* Map each Tx/cmd queue to its corresponding fifo */
2001 for (i
= 0; i
< ARRAY_SIZE(default_queue_to_tx_fifo
); i
++) {
2002 int ac
= default_queue_to_tx_fifo
[i
];
2003 iwl4965_txq_ctx_activate(priv
, i
);
2004 iwl4965_tx_queue_set_status(priv
, &priv
->txq
[i
], ac
, 0);
2007 iwl_release_nic_access(priv
);
2008 spin_unlock_irqrestore(&priv
->lock
, flags
);
2010 /* Ask for statistics now, the uCode will send statistics notification
2011 * periodically after association */
2012 iwl_send_statistics_request(priv
, CMD_ASYNC
);
2017 * iwl4965_hw_set_hw_params
2019 * Called when initializing driver
2021 int iwl4965_hw_set_hw_params(struct iwl_priv
*priv
)
2024 if ((priv
->cfg
->mod_params
->num_of_queues
> IWL4965_MAX_NUM_QUEUES
) ||
2025 (priv
->cfg
->mod_params
->num_of_queues
< IWL_MIN_NUM_QUEUES
)) {
2026 IWL_ERROR("invalid queues_num, should be between %d and %d\n",
2027 IWL_MIN_NUM_QUEUES
, IWL4965_MAX_NUM_QUEUES
);
2031 priv
->hw_params
.max_txq_num
= priv
->cfg
->mod_params
->num_of_queues
;
2032 priv
->hw_params
.tx_cmd_len
= sizeof(struct iwl4965_tx_cmd
);
2033 priv
->hw_params
.max_rxq_size
= RX_QUEUE_SIZE
;
2034 priv
->hw_params
.max_rxq_log
= RX_QUEUE_SIZE_LOG
;
2035 if (priv
->cfg
->mod_params
->amsdu_size_8K
)
2036 priv
->hw_params
.rx_buf_size
= IWL_RX_BUF_SIZE_8K
;
2038 priv
->hw_params
.rx_buf_size
= IWL_RX_BUF_SIZE_4K
;
2039 priv
->hw_params
.max_pkt_size
= priv
->hw_params
.rx_buf_size
- 256;
2040 priv
->hw_params
.max_stations
= IWL4965_STATION_COUNT
;
2041 priv
->hw_params
.bcast_sta_id
= IWL4965_BROADCAST_ID
;
2043 priv
->hw_params
.tx_chains_num
= 2;
2044 priv
->hw_params
.rx_chains_num
= 2;
2045 priv
->hw_params
.valid_tx_ant
= (IWL_ANTENNA_MAIN
| IWL_ANTENNA_AUX
);
2046 priv
->hw_params
.valid_rx_ant
= (IWL_ANTENNA_MAIN
| IWL_ANTENNA_AUX
);
2052 * iwl4965_hw_txq_ctx_free - Free TXQ Context
2054 * Destroy all TX DMA queues and structures
2056 void iwl4965_hw_txq_ctx_free(struct iwl_priv
*priv
)
2061 for (txq_id
= 0; txq_id
< priv
->hw_params
.max_txq_num
; txq_id
++)
2062 iwl4965_tx_queue_free(priv
, &priv
->txq
[txq_id
]);
2064 /* Keep-warm buffer */
2065 iwl4965_kw_free(priv
);
2069 * iwl4965_hw_txq_free_tfd - Free all chunks referenced by TFD [txq->q.read_ptr]
2071 * Does NOT advance any TFD circular buffer read/write indexes
2072 * Does NOT free the TFD itself (which is within circular buffer)
2074 int iwl4965_hw_txq_free_tfd(struct iwl_priv
*priv
, struct iwl4965_tx_queue
*txq
)
2076 struct iwl4965_tfd_frame
*bd_tmp
= (struct iwl4965_tfd_frame
*)&txq
->bd
[0];
2077 struct iwl4965_tfd_frame
*bd
= &bd_tmp
[txq
->q
.read_ptr
];
2078 struct pci_dev
*dev
= priv
->pci_dev
;
2083 /* Host command buffers stay mapped in memory, nothing to clean */
2084 if (txq
->q
.id
== IWL_CMD_QUEUE_NUM
)
2087 /* Sanity check on number of chunks */
2088 counter
= IWL_GET_BITS(*bd
, num_tbs
);
2089 if (counter
> MAX_NUM_OF_TBS
) {
2090 IWL_ERROR("Too many chunks: %i\n", counter
);
2091 /* @todo issue fatal error, it is quite serious situation */
2095 /* Unmap chunks, if any.
2096 * TFD info for odd chunks is different format than for even chunks. */
2097 for (i
= 0; i
< counter
; i
++) {
2104 IWL_GET_BITS(bd
->pa
[index
], tb2_addr_lo16
) |
2105 (IWL_GET_BITS(bd
->pa
[index
],
2106 tb2_addr_hi20
) << 16),
2107 IWL_GET_BITS(bd
->pa
[index
], tb2_len
),
2111 pci_unmap_single(dev
,
2112 le32_to_cpu(bd
->pa
[index
].tb1_addr
),
2113 IWL_GET_BITS(bd
->pa
[index
], tb1_len
),
2116 /* Free SKB, if any, for this chunk */
2117 if (txq
->txb
[txq
->q
.read_ptr
].skb
[i
]) {
2118 struct sk_buff
*skb
= txq
->txb
[txq
->q
.read_ptr
].skb
[i
];
2121 txq
->txb
[txq
->q
.read_ptr
].skb
[i
] = NULL
;
2127 int iwl4965_hw_reg_set_txpower(struct iwl_priv
*priv
, s8 power
)
2129 IWL_ERROR("TODO: Implement iwl4965_hw_reg_set_txpower!\n");
2133 static s32
iwl4965_math_div_round(s32 num
, s32 denom
, s32
*res
)
2146 *res
= ((num
* 2 + denom
) / (denom
* 2)) * sign
;
2152 * iwl4965_get_voltage_compensation - Power supply voltage comp for txpower
2154 * Determines power supply voltage compensation for txpower calculations.
2155 * Returns number of 1/2-dB steps to subtract from gain table index,
2156 * to compensate for difference between power supply voltage during
2157 * factory measurements, vs. current power supply voltage.
2159 * Voltage indication is higher for lower voltage.
2160 * Lower voltage requires more gain (lower gain table index).
2162 static s32
iwl4965_get_voltage_compensation(s32 eeprom_voltage
,
2163 s32 current_voltage
)
2167 if ((TX_POWER_IWL_ILLEGAL_VOLTAGE
== eeprom_voltage
) ||
2168 (TX_POWER_IWL_ILLEGAL_VOLTAGE
== current_voltage
))
2171 iwl4965_math_div_round(current_voltage
- eeprom_voltage
,
2172 TX_POWER_IWL_VOLTAGE_CODES_PER_03V
, &comp
);
2174 if (current_voltage
> eeprom_voltage
)
2176 if ((comp
< -2) || (comp
> 2))
2182 static const struct iwl_channel_info
*
2183 iwl4965_get_channel_txpower_info(struct iwl_priv
*priv
,
2184 enum ieee80211_band band
, u16 channel
)
2186 const struct iwl_channel_info
*ch_info
;
2188 ch_info
= iwl_get_channel_info(priv
, band
, channel
);
2190 if (!is_channel_valid(ch_info
))
2196 static s32
iwl4965_get_tx_atten_grp(u16 channel
)
2198 if (channel
>= CALIB_IWL_TX_ATTEN_GR5_FCH
&&
2199 channel
<= CALIB_IWL_TX_ATTEN_GR5_LCH
)
2200 return CALIB_CH_GROUP_5
;
2202 if (channel
>= CALIB_IWL_TX_ATTEN_GR1_FCH
&&
2203 channel
<= CALIB_IWL_TX_ATTEN_GR1_LCH
)
2204 return CALIB_CH_GROUP_1
;
2206 if (channel
>= CALIB_IWL_TX_ATTEN_GR2_FCH
&&
2207 channel
<= CALIB_IWL_TX_ATTEN_GR2_LCH
)
2208 return CALIB_CH_GROUP_2
;
2210 if (channel
>= CALIB_IWL_TX_ATTEN_GR3_FCH
&&
2211 channel
<= CALIB_IWL_TX_ATTEN_GR3_LCH
)
2212 return CALIB_CH_GROUP_3
;
2214 if (channel
>= CALIB_IWL_TX_ATTEN_GR4_FCH
&&
2215 channel
<= CALIB_IWL_TX_ATTEN_GR4_LCH
)
2216 return CALIB_CH_GROUP_4
;
2218 IWL_ERROR("Can't find txatten group for channel %d.\n", channel
);
2222 static u32
iwl4965_get_sub_band(const struct iwl_priv
*priv
, u32 channel
)
2226 for (b
= 0; b
< EEPROM_TX_POWER_BANDS
; b
++) {
2227 if (priv
->eeprom
.calib_info
.band_info
[b
].ch_from
== 0)
2230 if ((channel
>= priv
->eeprom
.calib_info
.band_info
[b
].ch_from
)
2231 && (channel
<= priv
->eeprom
.calib_info
.band_info
[b
].ch_to
))
2238 static s32
iwl4965_interpolate_value(s32 x
, s32 x1
, s32 y1
, s32 x2
, s32 y2
)
2245 iwl4965_math_div_round((x2
- x
) * (y1
- y2
), (x2
- x1
), &val
);
2251 * iwl4965_interpolate_chan - Interpolate factory measurements for one channel
2253 * Interpolates factory measurements from the two sample channels within a
2254 * sub-band, to apply to channel of interest. Interpolation is proportional to
2255 * differences in channel frequencies, which is proportional to differences
2256 * in channel number.
2258 static int iwl4965_interpolate_chan(struct iwl_priv
*priv
, u32 channel
,
2259 struct iwl4965_eeprom_calib_ch_info
*chan_info
)
2264 const struct iwl4965_eeprom_calib_measure
*m1
;
2265 const struct iwl4965_eeprom_calib_measure
*m2
;
2266 struct iwl4965_eeprom_calib_measure
*omeas
;
2270 s
= iwl4965_get_sub_band(priv
, channel
);
2271 if (s
>= EEPROM_TX_POWER_BANDS
) {
2272 IWL_ERROR("Tx Power can not find channel %d ", channel
);
2276 ch_i1
= priv
->eeprom
.calib_info
.band_info
[s
].ch1
.ch_num
;
2277 ch_i2
= priv
->eeprom
.calib_info
.band_info
[s
].ch2
.ch_num
;
2278 chan_info
->ch_num
= (u8
) channel
;
2280 IWL_DEBUG_TXPOWER("channel %d subband %d factory cal ch %d & %d\n",
2281 channel
, s
, ch_i1
, ch_i2
);
2283 for (c
= 0; c
< EEPROM_TX_POWER_TX_CHAINS
; c
++) {
2284 for (m
= 0; m
< EEPROM_TX_POWER_MEASUREMENTS
; m
++) {
2285 m1
= &(priv
->eeprom
.calib_info
.band_info
[s
].ch1
.
2286 measurements
[c
][m
]);
2287 m2
= &(priv
->eeprom
.calib_info
.band_info
[s
].ch2
.
2288 measurements
[c
][m
]);
2289 omeas
= &(chan_info
->measurements
[c
][m
]);
2292 (u8
) iwl4965_interpolate_value(channel
, ch_i1
,
2297 (u8
) iwl4965_interpolate_value(channel
, ch_i1
,
2298 m1
->gain_idx
, ch_i2
,
2300 omeas
->temperature
=
2301 (u8
) iwl4965_interpolate_value(channel
, ch_i1
,
2306 (s8
) iwl4965_interpolate_value(channel
, ch_i1
,
2311 ("chain %d meas %d AP1=%d AP2=%d AP=%d\n", c
, m
,
2312 m1
->actual_pow
, m2
->actual_pow
, omeas
->actual_pow
);
2314 ("chain %d meas %d NI1=%d NI2=%d NI=%d\n", c
, m
,
2315 m1
->gain_idx
, m2
->gain_idx
, omeas
->gain_idx
);
2317 ("chain %d meas %d PA1=%d PA2=%d PA=%d\n", c
, m
,
2318 m1
->pa_det
, m2
->pa_det
, omeas
->pa_det
);
2320 ("chain %d meas %d T1=%d T2=%d T=%d\n", c
, m
,
2321 m1
->temperature
, m2
->temperature
,
2322 omeas
->temperature
);
2329 /* bit-rate-dependent table to prevent Tx distortion, in half-dB units,
2330 * for OFDM 6, 12, 18, 24, 36, 48, 54, 60 MBit, and CCK all rates. */
2331 static s32 back_off_table
[] = {
2332 10, 10, 10, 10, 10, 15, 17, 20, /* OFDM SISO 20 MHz */
2333 10, 10, 10, 10, 10, 15, 17, 20, /* OFDM MIMO 20 MHz */
2334 10, 10, 10, 10, 10, 15, 17, 20, /* OFDM SISO 40 MHz */
2335 10, 10, 10, 10, 10, 15, 17, 20, /* OFDM MIMO 40 MHz */
2339 /* Thermal compensation values for txpower for various frequency ranges ...
2340 * ratios from 3:1 to 4.5:1 of degrees (Celsius) per half-dB gain adjust */
2341 static struct iwl4965_txpower_comp_entry
{
2342 s32 degrees_per_05db_a
;
2343 s32 degrees_per_05db_a_denom
;
2344 } tx_power_cmp_tble
[CALIB_CH_GROUP_MAX
] = {
2345 {9, 2}, /* group 0 5.2, ch 34-43 */
2346 {4, 1}, /* group 1 5.2, ch 44-70 */
2347 {4, 1}, /* group 2 5.2, ch 71-124 */
2348 {4, 1}, /* group 3 5.2, ch 125-200 */
2349 {3, 1} /* group 4 2.4, ch all */
2352 static s32
get_min_power_index(s32 rate_power_index
, u32 band
)
2355 if ((rate_power_index
& 7) <= 4)
2356 return MIN_TX_GAIN_INDEX_52GHZ_EXT
;
2358 return MIN_TX_GAIN_INDEX
;
2366 static const struct gain_entry gain_table
[2][108] = {
2367 /* 5.2GHz power gain index table */
2369 {123, 0x3F}, /* highest txpower */
2478 /* 2.4GHz power gain index table */
2480 {110, 0x3f}, /* highest txpower */
2591 static int iwl4965_fill_txpower_tbl(struct iwl_priv
*priv
, u8 band
, u16 channel
,
2592 u8 is_fat
, u8 ctrl_chan_high
,
2593 struct iwl4965_tx_power_db
*tx_power_tbl
)
2595 u8 saturation_power
;
2597 s32 user_target_power
;
2601 s32 current_regulatory
;
2602 s32 txatten_grp
= CALIB_CH_GROUP_MAX
;
2605 const struct iwl_channel_info
*ch_info
= NULL
;
2606 struct iwl4965_eeprom_calib_ch_info ch_eeprom_info
;
2607 const struct iwl4965_eeprom_calib_measure
*measurement
;
2610 s32 voltage_compensation
;
2611 s32 degrees_per_05db_num
;
2612 s32 degrees_per_05db_denom
;
2614 s32 temperature_comp
[2];
2615 s32 factory_gain_index
[2];
2616 s32 factory_actual_pwr
[2];
2619 /* Sanity check requested level (dBm) */
2620 if (priv
->user_txpower_limit
< IWL_TX_POWER_TARGET_POWER_MIN
) {
2621 IWL_WARNING("Requested user TXPOWER %d below limit.\n",
2622 priv
->user_txpower_limit
);
2625 if (priv
->user_txpower_limit
> IWL_TX_POWER_TARGET_POWER_MAX
) {
2626 IWL_WARNING("Requested user TXPOWER %d above limit.\n",
2627 priv
->user_txpower_limit
);
2631 /* user_txpower_limit is in dBm, convert to half-dBm (half-dB units
2632 * are used for indexing into txpower table) */
2633 user_target_power
= 2 * priv
->user_txpower_limit
;
2635 /* Get current (RXON) channel, band, width */
2637 iwl4965_get_channel_txpower_info(priv
, priv
->band
, channel
);
2639 IWL_DEBUG_TXPOWER("chan %d band %d is_fat %d\n", channel
, band
,
2645 /* get txatten group, used to select 1) thermal txpower adjustment
2646 * and 2) mimo txpower balance between Tx chains. */
2647 txatten_grp
= iwl4965_get_tx_atten_grp(channel
);
2648 if (txatten_grp
< 0)
2651 IWL_DEBUG_TXPOWER("channel %d belongs to txatten group %d\n",
2652 channel
, txatten_grp
);
2661 /* hardware txpower limits ...
2662 * saturation (clipping distortion) txpowers are in half-dBm */
2664 saturation_power
= priv
->eeprom
.calib_info
.saturation_power24
;
2666 saturation_power
= priv
->eeprom
.calib_info
.saturation_power52
;
2668 if (saturation_power
< IWL_TX_POWER_SATURATION_MIN
||
2669 saturation_power
> IWL_TX_POWER_SATURATION_MAX
) {
2671 saturation_power
= IWL_TX_POWER_DEFAULT_SATURATION_24
;
2673 saturation_power
= IWL_TX_POWER_DEFAULT_SATURATION_52
;
2676 /* regulatory txpower limits ... reg_limit values are in half-dBm,
2677 * max_power_avg values are in dBm, convert * 2 */
2679 reg_limit
= ch_info
->fat_max_power_avg
* 2;
2681 reg_limit
= ch_info
->max_power_avg
* 2;
2683 if ((reg_limit
< IWL_TX_POWER_REGULATORY_MIN
) ||
2684 (reg_limit
> IWL_TX_POWER_REGULATORY_MAX
)) {
2686 reg_limit
= IWL_TX_POWER_DEFAULT_REGULATORY_24
;
2688 reg_limit
= IWL_TX_POWER_DEFAULT_REGULATORY_52
;
2691 /* Interpolate txpower calibration values for this channel,
2692 * based on factory calibration tests on spaced channels. */
2693 iwl4965_interpolate_chan(priv
, channel
, &ch_eeprom_info
);
2695 /* calculate tx gain adjustment based on power supply voltage */
2696 voltage
= priv
->eeprom
.calib_info
.voltage
;
2697 init_voltage
= (s32
)le32_to_cpu(priv
->card_alive_init
.voltage
);
2698 voltage_compensation
=
2699 iwl4965_get_voltage_compensation(voltage
, init_voltage
);
2701 IWL_DEBUG_TXPOWER("curr volt %d eeprom volt %d volt comp %d\n",
2703 voltage
, voltage_compensation
);
2705 /* get current temperature (Celsius) */
2706 current_temp
= max(priv
->temperature
, IWL_TX_POWER_TEMPERATURE_MIN
);
2707 current_temp
= min(priv
->temperature
, IWL_TX_POWER_TEMPERATURE_MAX
);
2708 current_temp
= KELVIN_TO_CELSIUS(current_temp
);
2710 /* select thermal txpower adjustment params, based on channel group
2711 * (same frequency group used for mimo txatten adjustment) */
2712 degrees_per_05db_num
=
2713 tx_power_cmp_tble
[txatten_grp
].degrees_per_05db_a
;
2714 degrees_per_05db_denom
=
2715 tx_power_cmp_tble
[txatten_grp
].degrees_per_05db_a_denom
;
2717 /* get per-chain txpower values from factory measurements */
2718 for (c
= 0; c
< 2; c
++) {
2719 measurement
= &ch_eeprom_info
.measurements
[c
][1];
2721 /* txgain adjustment (in half-dB steps) based on difference
2722 * between factory and current temperature */
2723 factory_temp
= measurement
->temperature
;
2724 iwl4965_math_div_round((current_temp
- factory_temp
) *
2725 degrees_per_05db_denom
,
2726 degrees_per_05db_num
,
2727 &temperature_comp
[c
]);
2729 factory_gain_index
[c
] = measurement
->gain_idx
;
2730 factory_actual_pwr
[c
] = measurement
->actual_pow
;
2732 IWL_DEBUG_TXPOWER("chain = %d\n", c
);
2733 IWL_DEBUG_TXPOWER("fctry tmp %d, "
2734 "curr tmp %d, comp %d steps\n",
2735 factory_temp
, current_temp
,
2736 temperature_comp
[c
]);
2738 IWL_DEBUG_TXPOWER("fctry idx %d, fctry pwr %d\n",
2739 factory_gain_index
[c
],
2740 factory_actual_pwr
[c
]);
2743 /* for each of 33 bit-rates (including 1 for CCK) */
2744 for (i
= 0; i
< POWER_TABLE_NUM_ENTRIES
; i
++) {
2746 union iwl4965_tx_power_dual_stream tx_power
;
2748 /* for mimo, reduce each chain's txpower by half
2749 * (3dB, 6 steps), so total output power is regulatory
2752 current_regulatory
= reg_limit
-
2753 IWL_TX_POWER_MIMO_REGULATORY_COMPENSATION
;
2756 current_regulatory
= reg_limit
;
2760 /* find txpower limit, either hardware or regulatory */
2761 power_limit
= saturation_power
- back_off_table
[i
];
2762 if (power_limit
> current_regulatory
)
2763 power_limit
= current_regulatory
;
2765 /* reduce user's txpower request if necessary
2766 * for this rate on this channel */
2767 target_power
= user_target_power
;
2768 if (target_power
> power_limit
)
2769 target_power
= power_limit
;
2771 IWL_DEBUG_TXPOWER("rate %d sat %d reg %d usr %d tgt %d\n",
2772 i
, saturation_power
- back_off_table
[i
],
2773 current_regulatory
, user_target_power
,
2776 /* for each of 2 Tx chains (radio transmitters) */
2777 for (c
= 0; c
< 2; c
++) {
2782 (s32
)le32_to_cpu(priv
->card_alive_init
.
2783 tx_atten
[txatten_grp
][c
]);
2787 /* calculate index; higher index means lower txpower */
2788 power_index
= (u8
) (factory_gain_index
[c
] -
2790 factory_actual_pwr
[c
]) -
2791 temperature_comp
[c
] -
2792 voltage_compensation
+
2795 /* IWL_DEBUG_TXPOWER("calculated txpower index %d\n",
2798 if (power_index
< get_min_power_index(i
, band
))
2799 power_index
= get_min_power_index(i
, band
);
2801 /* adjust 5 GHz index to support negative indexes */
2805 /* CCK, rate 32, reduce txpower for CCK */
2806 if (i
== POWER_TABLE_CCK_ENTRY
)
2808 IWL_TX_POWER_CCK_COMPENSATION_C_STEP
;
2810 /* stay within the table! */
2811 if (power_index
> 107) {
2812 IWL_WARNING("txpower index %d > 107\n",
2816 if (power_index
< 0) {
2817 IWL_WARNING("txpower index %d < 0\n",
2822 /* fill txpower command for this rate/chain */
2823 tx_power
.s
.radio_tx_gain
[c
] =
2824 gain_table
[band
][power_index
].radio
;
2825 tx_power
.s
.dsp_predis_atten
[c
] =
2826 gain_table
[band
][power_index
].dsp
;
2828 IWL_DEBUG_TXPOWER("chain %d mimo %d index %d "
2829 "gain 0x%02x dsp %d\n",
2830 c
, atten_value
, power_index
,
2831 tx_power
.s
.radio_tx_gain
[c
],
2832 tx_power
.s
.dsp_predis_atten
[c
]);
2833 }/* for each chain */
2835 tx_power_tbl
->power_tbl
[i
].dw
= cpu_to_le32(tx_power
.dw
);
2837 }/* for each rate */
2843 * iwl4965_hw_reg_send_txpower - Configure the TXPOWER level user limit
2845 * Uses the active RXON for channel, band, and characteristics (fat, high)
2846 * The power limit is taken from priv->user_txpower_limit.
2848 int iwl4965_hw_reg_send_txpower(struct iwl_priv
*priv
)
2850 struct iwl4965_txpowertable_cmd cmd
= { 0 };
2854 u8 ctrl_chan_high
= 0;
2856 if (test_bit(STATUS_SCANNING
, &priv
->status
)) {
2857 /* If this gets hit a lot, switch it to a BUG() and catch
2858 * the stack trace to find out who is calling this during
2860 IWL_WARNING("TX Power requested while scanning!\n");
2864 band
= priv
->band
== IEEE80211_BAND_2GHZ
;
2866 is_fat
= is_fat_channel(priv
->active_rxon
.flags
);
2869 (priv
->active_rxon
.flags
& RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK
))
2873 cmd
.channel
= priv
->active_rxon
.channel
;
2875 ret
= iwl4965_fill_txpower_tbl(priv
, band
,
2876 le16_to_cpu(priv
->active_rxon
.channel
),
2877 is_fat
, ctrl_chan_high
, &cmd
.tx_power
);
2881 ret
= iwl_send_cmd_pdu(priv
, REPLY_TX_PWR_TABLE_CMD
, sizeof(cmd
), &cmd
);
2887 static int iwl4965_send_rxon_assoc(struct iwl_priv
*priv
)
2890 struct iwl4965_rxon_assoc_cmd rxon_assoc
;
2891 const struct iwl4965_rxon_cmd
*rxon1
= &priv
->staging_rxon
;
2892 const struct iwl4965_rxon_cmd
*rxon2
= &priv
->active_rxon
;
2894 if ((rxon1
->flags
== rxon2
->flags
) &&
2895 (rxon1
->filter_flags
== rxon2
->filter_flags
) &&
2896 (rxon1
->cck_basic_rates
== rxon2
->cck_basic_rates
) &&
2897 (rxon1
->ofdm_ht_single_stream_basic_rates
==
2898 rxon2
->ofdm_ht_single_stream_basic_rates
) &&
2899 (rxon1
->ofdm_ht_dual_stream_basic_rates
==
2900 rxon2
->ofdm_ht_dual_stream_basic_rates
) &&
2901 (rxon1
->rx_chain
== rxon2
->rx_chain
) &&
2902 (rxon1
->ofdm_basic_rates
== rxon2
->ofdm_basic_rates
)) {
2903 IWL_DEBUG_INFO("Using current RXON_ASSOC. Not resending.\n");
2907 rxon_assoc
.flags
= priv
->staging_rxon
.flags
;
2908 rxon_assoc
.filter_flags
= priv
->staging_rxon
.filter_flags
;
2909 rxon_assoc
.ofdm_basic_rates
= priv
->staging_rxon
.ofdm_basic_rates
;
2910 rxon_assoc
.cck_basic_rates
= priv
->staging_rxon
.cck_basic_rates
;
2911 rxon_assoc
.reserved
= 0;
2912 rxon_assoc
.ofdm_ht_single_stream_basic_rates
=
2913 priv
->staging_rxon
.ofdm_ht_single_stream_basic_rates
;
2914 rxon_assoc
.ofdm_ht_dual_stream_basic_rates
=
2915 priv
->staging_rxon
.ofdm_ht_dual_stream_basic_rates
;
2916 rxon_assoc
.rx_chain_select_flags
= priv
->staging_rxon
.rx_chain
;
2918 ret
= iwl_send_cmd_pdu_async(priv
, REPLY_RXON_ASSOC
,
2919 sizeof(rxon_assoc
), &rxon_assoc
, NULL
);
2927 int iwl4965_hw_channel_switch(struct iwl_priv
*priv
, u16 channel
)
2932 u8 ctrl_chan_high
= 0;
2933 struct iwl4965_channel_switch_cmd cmd
= { 0 };
2934 const struct iwl_channel_info
*ch_info
;
2936 band
= priv
->band
== IEEE80211_BAND_2GHZ
;
2938 ch_info
= iwl_get_channel_info(priv
, priv
->band
, channel
);
2940 is_fat
= is_fat_channel(priv
->staging_rxon
.flags
);
2943 (priv
->active_rxon
.flags
& RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK
))
2947 cmd
.expect_beacon
= 0;
2948 cmd
.channel
= cpu_to_le16(channel
);
2949 cmd
.rxon_flags
= priv
->active_rxon
.flags
;
2950 cmd
.rxon_filter_flags
= priv
->active_rxon
.filter_flags
;
2951 cmd
.switch_time
= cpu_to_le32(priv
->ucode_beacon_time
);
2953 cmd
.expect_beacon
= is_channel_radar(ch_info
);
2955 cmd
.expect_beacon
= 1;
2957 rc
= iwl4965_fill_txpower_tbl(priv
, band
, channel
, is_fat
,
2958 ctrl_chan_high
, &cmd
.tx_power
);
2960 IWL_DEBUG_11H("error:%d fill txpower_tbl\n", rc
);
2964 rc
= iwl_send_cmd_pdu(priv
, REPLY_CHANNEL_SWITCH
, sizeof(cmd
), &cmd
);
2968 #define RTS_HCCA_RETRY_LIMIT 3
2969 #define RTS_DFAULT_RETRY_LIMIT 60
2971 void iwl4965_hw_build_tx_cmd_rate(struct iwl_priv
*priv
,
2972 struct iwl_cmd
*cmd
,
2973 struct ieee80211_tx_control
*ctrl
,
2974 struct ieee80211_hdr
*hdr
, int sta_id
,
2977 struct iwl4965_tx_cmd
*tx
= &cmd
->cmd
.tx
;
2978 u8 rts_retry_limit
= 0;
2979 u8 data_retry_limit
= 0;
2980 u16 fc
= le16_to_cpu(hdr
->frame_control
);
2983 int rate_idx
= min(ctrl
->tx_rate
->hw_value
& 0xffff, IWL_RATE_COUNT
- 1);
2985 rate_plcp
= iwl4965_rates
[rate_idx
].plcp
;
2987 rts_retry_limit
= (is_hcca
) ?
2988 RTS_HCCA_RETRY_LIMIT
: RTS_DFAULT_RETRY_LIMIT
;
2990 if ((rate_idx
>= IWL_FIRST_CCK_RATE
) && (rate_idx
<= IWL_LAST_CCK_RATE
))
2991 rate_flags
|= RATE_MCS_CCK_MSK
;
2994 if (ieee80211_is_probe_response(fc
)) {
2995 data_retry_limit
= 3;
2996 if (data_retry_limit
< rts_retry_limit
)
2997 rts_retry_limit
= data_retry_limit
;
2999 data_retry_limit
= IWL_DEFAULT_TX_RETRY
;
3001 if (priv
->data_retry_limit
!= -1)
3002 data_retry_limit
= priv
->data_retry_limit
;
3005 if (ieee80211_is_data(fc
)) {
3006 tx
->initial_rate_index
= 0;
3007 tx
->tx_flags
|= TX_CMD_FLG_STA_RATE_MSK
;
3009 switch (fc
& IEEE80211_FCTL_STYPE
) {
3010 case IEEE80211_STYPE_AUTH
:
3011 case IEEE80211_STYPE_DEAUTH
:
3012 case IEEE80211_STYPE_ASSOC_REQ
:
3013 case IEEE80211_STYPE_REASSOC_REQ
:
3014 if (tx
->tx_flags
& TX_CMD_FLG_RTS_MSK
) {
3015 tx
->tx_flags
&= ~TX_CMD_FLG_RTS_MSK
;
3016 tx
->tx_flags
|= TX_CMD_FLG_CTS_MSK
;
3023 /* Alternate between antenna A and B for successive frames */
3024 if (priv
->use_ant_b_for_management_frame
) {
3025 priv
->use_ant_b_for_management_frame
= 0;
3026 rate_flags
|= RATE_MCS_ANT_B_MSK
;
3028 priv
->use_ant_b_for_management_frame
= 1;
3029 rate_flags
|= RATE_MCS_ANT_A_MSK
;
3033 tx
->rts_retry_limit
= rts_retry_limit
;
3034 tx
->data_retry_limit
= data_retry_limit
;
3035 tx
->rate_n_flags
= iwl4965_hw_set_rate_n_flags(rate_plcp
, rate_flags
);
3038 int iwl4965_hw_get_rx_read(struct iwl_priv
*priv
)
3040 struct iwl4965_shared
*s
= priv
->shared_virt
;
3041 return le32_to_cpu(s
->rb_closed
) & 0xFFF;
3044 int iwl4965_hw_get_temperature(struct iwl_priv
*priv
)
3046 return priv
->temperature
;
3049 unsigned int iwl4965_hw_get_beacon_cmd(struct iwl_priv
*priv
,
3050 struct iwl4965_frame
*frame
, u8 rate
)
3052 struct iwl4965_tx_beacon_cmd
*tx_beacon_cmd
;
3053 unsigned int frame_size
;
3055 tx_beacon_cmd
= &frame
->u
.beacon
;
3056 memset(tx_beacon_cmd
, 0, sizeof(*tx_beacon_cmd
));
3058 tx_beacon_cmd
->tx
.sta_id
= priv
->hw_params
.bcast_sta_id
;
3059 tx_beacon_cmd
->tx
.stop_time
.life_time
= TX_CMD_LIFE_TIME_INFINITE
;
3061 frame_size
= iwl4965_fill_beacon_frame(priv
,
3062 tx_beacon_cmd
->frame
,
3063 iwl4965_broadcast_addr
,
3064 sizeof(frame
->u
) - sizeof(*tx_beacon_cmd
));
3066 BUG_ON(frame_size
> MAX_MPDU_SIZE
);
3067 tx_beacon_cmd
->tx
.len
= cpu_to_le16((u16
)frame_size
);
3069 if ((rate
== IWL_RATE_1M_PLCP
) || (rate
>= IWL_RATE_2M_PLCP
))
3070 tx_beacon_cmd
->tx
.rate_n_flags
=
3071 iwl4965_hw_set_rate_n_flags(rate
, RATE_MCS_CCK_MSK
);
3073 tx_beacon_cmd
->tx
.rate_n_flags
=
3074 iwl4965_hw_set_rate_n_flags(rate
, 0);
3076 tx_beacon_cmd
->tx
.tx_flags
= (TX_CMD_FLG_SEQ_CTL_MSK
|
3077 TX_CMD_FLG_TSF_MSK
| TX_CMD_FLG_STA_RATE_MSK
);
3078 return (sizeof(*tx_beacon_cmd
) + frame_size
);
3082 * Tell 4965 where to find circular buffer of Tx Frame Descriptors for
3083 * given Tx queue, and enable the DMA channel used for that queue.
3085 * 4965 supports up to 16 Tx queues in DRAM, mapped to up to 8 Tx DMA
3086 * channels supported in hardware.
3088 int iwl4965_hw_tx_queue_init(struct iwl_priv
*priv
, struct iwl4965_tx_queue
*txq
)
3091 unsigned long flags
;
3092 int txq_id
= txq
->q
.id
;
3094 spin_lock_irqsave(&priv
->lock
, flags
);
3095 rc
= iwl_grab_nic_access(priv
);
3097 spin_unlock_irqrestore(&priv
->lock
, flags
);
3101 /* Circular buffer (TFD queue in DRAM) physical base address */
3102 iwl_write_direct32(priv
, FH_MEM_CBBC_QUEUE(txq_id
),
3103 txq
->q
.dma_addr
>> 8);
3105 /* Enable DMA channel, using same id as for TFD queue */
3107 priv
, IWL_FH_TCSR_CHNL_TX_CONFIG_REG(txq_id
),
3108 IWL_FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE
|
3109 IWL_FH_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_ENABLE_VAL
);
3110 iwl_release_nic_access(priv
);
3111 spin_unlock_irqrestore(&priv
->lock
, flags
);
3116 int iwl4965_hw_txq_attach_buf_to_tfd(struct iwl_priv
*priv
, void *ptr
,
3117 dma_addr_t addr
, u16 len
)
3120 struct iwl4965_tfd_frame
*tfd
= ptr
;
3121 u32 num_tbs
= IWL_GET_BITS(*tfd
, num_tbs
);
3123 /* Each TFD can point to a maximum 20 Tx buffers */
3124 if ((num_tbs
>= MAX_NUM_OF_TBS
) || (num_tbs
< 0)) {
3125 IWL_ERROR("Error can not send more than %d chunks\n",
3130 index
= num_tbs
/ 2;
3131 is_odd
= num_tbs
& 0x1;
3134 tfd
->pa
[index
].tb1_addr
= cpu_to_le32(addr
);
3135 IWL_SET_BITS(tfd
->pa
[index
], tb1_addr_hi
,
3136 iwl_get_dma_hi_address(addr
));
3137 IWL_SET_BITS(tfd
->pa
[index
], tb1_len
, len
);
3139 IWL_SET_BITS(tfd
->pa
[index
], tb2_addr_lo16
,
3140 (u32
) (addr
& 0xffff));
3141 IWL_SET_BITS(tfd
->pa
[index
], tb2_addr_hi20
, addr
>> 16);
3142 IWL_SET_BITS(tfd
->pa
[index
], tb2_len
, len
);
3145 IWL_SET_BITS(*tfd
, num_tbs
, num_tbs
+ 1);
3150 static void iwl4965_hw_card_show_info(struct iwl_priv
*priv
)
3152 u16 hw_version
= priv
->eeprom
.board_revision_4965
;
3154 IWL_DEBUG_INFO("4965ABGN HW Version %u.%u.%u\n",
3155 ((hw_version
>> 8) & 0x0F),
3156 ((hw_version
>> 8) >> 4), (hw_version
& 0x00FF));
3158 IWL_DEBUG_INFO("4965ABGN PBA Number %.16s\n",
3159 priv
->eeprom
.board_pba_number_4965
);
3162 #define IWL_TX_CRC_SIZE 4
3163 #define IWL_TX_DELIMITER_SIZE 4
3166 * iwl4965_txq_update_byte_cnt_tbl - Set up entry in Tx byte-count array
3168 static void iwl4965_txq_update_byte_cnt_tbl(struct iwl_priv
*priv
,
3169 struct iwl4965_tx_queue
*txq
,
3173 int txq_id
= txq
->q
.id
;
3174 struct iwl4965_shared
*shared_data
= priv
->shared_virt
;
3176 len
= byte_cnt
+ IWL_TX_CRC_SIZE
+ IWL_TX_DELIMITER_SIZE
;
3178 /* Set up byte count within first 256 entries */
3179 IWL_SET_BITS16(shared_data
->queues_byte_cnt_tbls
[txq_id
].
3180 tfd_offset
[txq
->q
.write_ptr
], byte_cnt
, len
);
3182 /* If within first 64 entries, duplicate at end */
3183 if (txq
->q
.write_ptr
< IWL4965_MAX_WIN_SIZE
)
3184 IWL_SET_BITS16(shared_data
->queues_byte_cnt_tbls
[txq_id
].
3185 tfd_offset
[IWL4965_QUEUE_SIZE
+ txq
->q
.write_ptr
],
3190 * iwl4965_set_rxon_chain - Set up Rx chain usage in "staging" RXON image
3192 * Selects how many and which Rx receivers/antennas/chains to use.
3193 * This should not be used for scan command ... it puts data in wrong place.
3195 void iwl4965_set_rxon_chain(struct iwl_priv
*priv
)
3197 u8 is_single
= is_single_stream(priv
);
3198 u8 idle_state
, rx_state
;
3200 priv
->staging_rxon
.rx_chain
= 0;
3201 rx_state
= idle_state
= 3;
3203 /* Tell uCode which antennas are actually connected.
3204 * Before first association, we assume all antennas are connected.
3205 * Just after first association, iwl4965_noise_calibration()
3206 * checks which antennas actually *are* connected. */
3207 priv
->staging_rxon
.rx_chain
|=
3208 cpu_to_le16(priv
->valid_antenna
<< RXON_RX_CHAIN_VALID_POS
);
3210 /* How many receivers should we use? */
3211 iwl4965_get_rx_chain_counter(priv
, &idle_state
, &rx_state
);
3212 priv
->staging_rxon
.rx_chain
|=
3213 cpu_to_le16(rx_state
<< RXON_RX_CHAIN_MIMO_CNT_POS
);
3214 priv
->staging_rxon
.rx_chain
|=
3215 cpu_to_le16(idle_state
<< RXON_RX_CHAIN_CNT_POS
);
3217 if (!is_single
&& (rx_state
>= 2) &&
3218 !test_bit(STATUS_POWER_PMI
, &priv
->status
))
3219 priv
->staging_rxon
.rx_chain
|= RXON_RX_CHAIN_MIMO_FORCE_MSK
;
3221 priv
->staging_rxon
.rx_chain
&= ~RXON_RX_CHAIN_MIMO_FORCE_MSK
;
3223 IWL_DEBUG_ASSOC("rx chain %X\n", priv
->staging_rxon
.rx_chain
);
3227 * sign_extend - Sign extend a value using specified bit as sign-bit
3229 * Example: sign_extend(9, 3) would return -7 as bit3 of 1001b is 1
3230 * and bit0..2 is 001b which when sign extended to 1111111111111001b is -7.
3232 * @param oper value to sign extend
3233 * @param index 0 based bit index (0<=index<32) to sign bit
3235 static s32
sign_extend(u32 oper
, int index
)
3237 u8 shift
= 31 - index
;
3239 return (s32
)(oper
<< shift
) >> shift
;
3243 * iwl4965_get_temperature - return the calibrated temperature (in Kelvin)
3244 * @statistics: Provides the temperature reading from the uCode
3246 * A return of <0 indicates bogus data in the statistics
3248 int iwl4965_get_temperature(const struct iwl_priv
*priv
)
3255 if (test_bit(STATUS_TEMPERATURE
, &priv
->status
) &&
3256 (priv
->statistics
.flag
& STATISTICS_REPLY_FLG_FAT_MODE_MSK
)) {
3257 IWL_DEBUG_TEMP("Running FAT temperature calibration\n");
3258 R1
= (s32
)le32_to_cpu(priv
->card_alive_init
.therm_r1
[1]);
3259 R2
= (s32
)le32_to_cpu(priv
->card_alive_init
.therm_r2
[1]);
3260 R3
= (s32
)le32_to_cpu(priv
->card_alive_init
.therm_r3
[1]);
3261 R4
= le32_to_cpu(priv
->card_alive_init
.therm_r4
[1]);
3263 IWL_DEBUG_TEMP("Running temperature calibration\n");
3264 R1
= (s32
)le32_to_cpu(priv
->card_alive_init
.therm_r1
[0]);
3265 R2
= (s32
)le32_to_cpu(priv
->card_alive_init
.therm_r2
[0]);
3266 R3
= (s32
)le32_to_cpu(priv
->card_alive_init
.therm_r3
[0]);
3267 R4
= le32_to_cpu(priv
->card_alive_init
.therm_r4
[0]);
3271 * Temperature is only 23 bits, so sign extend out to 32.
3273 * NOTE If we haven't received a statistics notification yet
3274 * with an updated temperature, use R4 provided to us in the
3275 * "initialize" ALIVE response.
3277 if (!test_bit(STATUS_TEMPERATURE
, &priv
->status
))
3278 vt
= sign_extend(R4
, 23);
3281 le32_to_cpu(priv
->statistics
.general
.temperature
), 23);
3283 IWL_DEBUG_TEMP("Calib values R[1-3]: %d %d %d R4: %d\n",
3287 IWL_ERROR("Calibration conflict R1 == R3\n");
3291 /* Calculate temperature in degrees Kelvin, adjust by 97%.
3292 * Add offset to center the adjustment around 0 degrees Centigrade. */
3293 temperature
= TEMPERATURE_CALIB_A_VAL
* (vt
- R2
);
3294 temperature
/= (R3
- R1
);
3295 temperature
= (temperature
* 97) / 100 +
3296 TEMPERATURE_CALIB_KELVIN_OFFSET
;
3298 IWL_DEBUG_TEMP("Calibrated temperature: %dK, %dC\n", temperature
,
3299 KELVIN_TO_CELSIUS(temperature
));
3304 /* Adjust Txpower only if temperature variance is greater than threshold. */
3305 #define IWL_TEMPERATURE_THRESHOLD 3
3308 * iwl4965_is_temp_calib_needed - determines if new calibration is needed
3310 * If the temperature changed has changed sufficiently, then a recalibration
3313 * Assumes caller will replace priv->last_temperature once calibration
3316 static int iwl4965_is_temp_calib_needed(struct iwl_priv
*priv
)
3320 if (!test_bit(STATUS_STATISTICS
, &priv
->status
)) {
3321 IWL_DEBUG_TEMP("Temperature not updated -- no statistics.\n");
3325 temp_diff
= priv
->temperature
- priv
->last_temperature
;
3327 /* get absolute value */
3328 if (temp_diff
< 0) {
3329 IWL_DEBUG_POWER("Getting cooler, delta %d, \n", temp_diff
);
3330 temp_diff
= -temp_diff
;
3331 } else if (temp_diff
== 0)
3332 IWL_DEBUG_POWER("Same temp, \n");
3334 IWL_DEBUG_POWER("Getting warmer, delta %d, \n", temp_diff
);
3336 if (temp_diff
< IWL_TEMPERATURE_THRESHOLD
) {
3337 IWL_DEBUG_POWER("Thermal txpower calib not needed\n");
3341 IWL_DEBUG_POWER("Thermal txpower calib needed\n");
3346 /* Calculate noise level, based on measurements during network silence just
3347 * before arriving beacon. This measurement can be done only if we know
3348 * exactly when to expect beacons, therefore only when we're associated. */
3349 static void iwl4965_rx_calc_noise(struct iwl_priv
*priv
)
3351 struct statistics_rx_non_phy
*rx_info
3352 = &(priv
->statistics
.rx
.general
);
3353 int num_active_rx
= 0;
3354 int total_silence
= 0;
3356 le32_to_cpu(rx_info
->beacon_silence_rssi_a
) & IN_BAND_FILTER
;
3358 le32_to_cpu(rx_info
->beacon_silence_rssi_b
) & IN_BAND_FILTER
;
3360 le32_to_cpu(rx_info
->beacon_silence_rssi_c
) & IN_BAND_FILTER
;
3362 if (bcn_silence_a
) {
3363 total_silence
+= bcn_silence_a
;
3366 if (bcn_silence_b
) {
3367 total_silence
+= bcn_silence_b
;
3370 if (bcn_silence_c
) {
3371 total_silence
+= bcn_silence_c
;
3375 /* Average among active antennas */
3377 priv
->last_rx_noise
= (total_silence
/ num_active_rx
) - 107;
3379 priv
->last_rx_noise
= IWL_NOISE_MEAS_NOT_AVAILABLE
;
3381 IWL_DEBUG_CALIB("inband silence a %u, b %u, c %u, dBm %d\n",
3382 bcn_silence_a
, bcn_silence_b
, bcn_silence_c
,
3383 priv
->last_rx_noise
);
3386 void iwl4965_hw_rx_statistics(struct iwl_priv
*priv
, struct iwl4965_rx_mem_buffer
*rxb
)
3388 struct iwl4965_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3392 IWL_DEBUG_RX("Statistics notification received (%d vs %d).\n",
3393 (int)sizeof(priv
->statistics
), pkt
->len
);
3395 change
= ((priv
->statistics
.general
.temperature
!=
3396 pkt
->u
.stats
.general
.temperature
) ||
3397 ((priv
->statistics
.flag
&
3398 STATISTICS_REPLY_FLG_FAT_MODE_MSK
) !=
3399 (pkt
->u
.stats
.flag
& STATISTICS_REPLY_FLG_FAT_MODE_MSK
)));
3401 memcpy(&priv
->statistics
, &pkt
->u
.stats
, sizeof(priv
->statistics
));
3403 set_bit(STATUS_STATISTICS
, &priv
->status
);
3405 /* Reschedule the statistics timer to occur in
3406 * REG_RECALIB_PERIOD seconds to ensure we get a
3407 * thermal update even if the uCode doesn't give
3409 mod_timer(&priv
->statistics_periodic
, jiffies
+
3410 msecs_to_jiffies(REG_RECALIB_PERIOD
* 1000));
3412 if (unlikely(!test_bit(STATUS_SCANNING
, &priv
->status
)) &&
3413 (pkt
->hdr
.cmd
== STATISTICS_NOTIFICATION
)) {
3414 iwl4965_rx_calc_noise(priv
);
3415 #ifdef CONFIG_IWL4965_SENSITIVITY
3416 queue_work(priv
->workqueue
, &priv
->sensitivity_work
);
3420 iwl_leds_background(priv
);
3422 /* If the hardware hasn't reported a change in
3423 * temperature then don't bother computing a
3424 * calibrated temperature value */
3428 temp
= iwl4965_get_temperature(priv
);
3432 if (priv
->temperature
!= temp
) {
3433 if (priv
->temperature
)
3434 IWL_DEBUG_TEMP("Temperature changed "
3435 "from %dC to %dC\n",
3436 KELVIN_TO_CELSIUS(priv
->temperature
),
3437 KELVIN_TO_CELSIUS(temp
));
3439 IWL_DEBUG_TEMP("Temperature "
3440 "initialized to %dC\n",
3441 KELVIN_TO_CELSIUS(temp
));
3444 priv
->temperature
= temp
;
3445 set_bit(STATUS_TEMPERATURE
, &priv
->status
);
3447 if (unlikely(!test_bit(STATUS_SCANNING
, &priv
->status
)) &&
3448 iwl4965_is_temp_calib_needed(priv
))
3449 queue_work(priv
->workqueue
, &priv
->txpower_work
);
3452 static void iwl4965_add_radiotap(struct iwl_priv
*priv
,
3453 struct sk_buff
*skb
,
3454 struct iwl4965_rx_phy_res
*rx_start
,
3455 struct ieee80211_rx_status
*stats
,
3458 s8 signal
= stats
->ssi
;
3460 int rate
= stats
->rate_idx
;
3461 u64 tsf
= stats
->mactime
;
3463 __le16 phy_flags_hw
= rx_start
->phy_flags
;
3464 struct iwl4965_rt_rx_hdr
{
3465 struct ieee80211_radiotap_header rt_hdr
;
3466 __le64 rt_tsf
; /* TSF */
3467 u8 rt_flags
; /* radiotap packet flags */
3468 u8 rt_rate
; /* rate in 500kb/s */
3469 __le16 rt_channelMHz
; /* channel in MHz */
3470 __le16 rt_chbitmask
; /* channel bitfield */
3471 s8 rt_dbmsignal
; /* signal in dBm, kluged to signed */
3473 u8 rt_antenna
; /* antenna number */
3474 } __attribute__ ((packed
)) *iwl4965_rt
;
3476 /* TODO: We won't have enough headroom for HT frames. Fix it later. */
3477 if (skb_headroom(skb
) < sizeof(*iwl4965_rt
)) {
3478 if (net_ratelimit())
3479 printk(KERN_ERR
"not enough headroom [%d] for "
3480 "radiotap head [%zd]\n",
3481 skb_headroom(skb
), sizeof(*iwl4965_rt
));
3485 /* put radiotap header in front of 802.11 header and data */
3486 iwl4965_rt
= (void *)skb_push(skb
, sizeof(*iwl4965_rt
));
3488 /* initialise radiotap header */
3489 iwl4965_rt
->rt_hdr
.it_version
= PKTHDR_RADIOTAP_VERSION
;
3490 iwl4965_rt
->rt_hdr
.it_pad
= 0;
3492 /* total header + data */
3493 put_unaligned(cpu_to_le16(sizeof(*iwl4965_rt
)),
3494 &iwl4965_rt
->rt_hdr
.it_len
);
3496 /* Indicate all the fields we add to the radiotap header */
3497 put_unaligned(cpu_to_le32((1 << IEEE80211_RADIOTAP_TSFT
) |
3498 (1 << IEEE80211_RADIOTAP_FLAGS
) |
3499 (1 << IEEE80211_RADIOTAP_RATE
) |
3500 (1 << IEEE80211_RADIOTAP_CHANNEL
) |
3501 (1 << IEEE80211_RADIOTAP_DBM_ANTSIGNAL
) |
3502 (1 << IEEE80211_RADIOTAP_DBM_ANTNOISE
) |
3503 (1 << IEEE80211_RADIOTAP_ANTENNA
)),
3504 &iwl4965_rt
->rt_hdr
.it_present
);
3506 /* Zero the flags, we'll add to them as we go */
3507 iwl4965_rt
->rt_flags
= 0;
3509 put_unaligned(cpu_to_le64(tsf
), &iwl4965_rt
->rt_tsf
);
3511 iwl4965_rt
->rt_dbmsignal
= signal
;
3512 iwl4965_rt
->rt_dbmnoise
= noise
;
3514 /* Convert the channel frequency and set the flags */
3515 put_unaligned(cpu_to_le16(stats
->freq
), &iwl4965_rt
->rt_channelMHz
);
3516 if (!(phy_flags_hw
& RX_RES_PHY_FLAGS_BAND_24_MSK
))
3517 put_unaligned(cpu_to_le16(IEEE80211_CHAN_OFDM
|
3518 IEEE80211_CHAN_5GHZ
),
3519 &iwl4965_rt
->rt_chbitmask
);
3520 else if (phy_flags_hw
& RX_RES_PHY_FLAGS_MOD_CCK_MSK
)
3521 put_unaligned(cpu_to_le16(IEEE80211_CHAN_CCK
|
3522 IEEE80211_CHAN_2GHZ
),
3523 &iwl4965_rt
->rt_chbitmask
);
3525 put_unaligned(cpu_to_le16(IEEE80211_CHAN_OFDM
|
3526 IEEE80211_CHAN_2GHZ
),
3527 &iwl4965_rt
->rt_chbitmask
);
3530 iwl4965_rt
->rt_rate
= 0;
3532 iwl4965_rt
->rt_rate
= iwl4965_rates
[rate
].ieee
;
3537 * It seems that the antenna field in the phy flags value
3538 * is actually a bitfield. This is undefined by radiotap,
3539 * it wants an actual antenna number but I always get "7"
3540 * for most legacy frames I receive indicating that the
3541 * same frame was received on all three RX chains.
3543 * I think this field should be removed in favour of a
3544 * new 802.11n radiotap field "RX chains" that is defined
3547 antenna
= phy_flags_hw
& RX_RES_PHY_FLAGS_ANTENNA_MSK
;
3548 iwl4965_rt
->rt_antenna
= le16_to_cpu(antenna
) >> 4;
3550 /* set the preamble flag if appropriate */
3551 if (phy_flags_hw
& RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK
)
3552 iwl4965_rt
->rt_flags
|= IEEE80211_RADIOTAP_F_SHORTPRE
;
3554 stats
->flag
|= RX_FLAG_RADIOTAP
;
3557 static void iwl_update_rx_stats(struct iwl_priv
*priv
, u16 fc
, u16 len
)
3559 /* 0 - mgmt, 1 - cnt, 2 - data */
3560 int idx
= (fc
& IEEE80211_FCTL_FTYPE
) >> 2;
3561 priv
->rx_stats
[idx
].cnt
++;
3562 priv
->rx_stats
[idx
].bytes
+= len
;
3565 static u32
iwl4965_translate_rx_status(u32 decrypt_in
)
3567 u32 decrypt_out
= 0;
3569 if ((decrypt_in
& RX_RES_STATUS_STATION_FOUND
) ==
3570 RX_RES_STATUS_STATION_FOUND
)
3571 decrypt_out
|= (RX_RES_STATUS_STATION_FOUND
|
3572 RX_RES_STATUS_NO_STATION_INFO_MISMATCH
);
3574 decrypt_out
|= (decrypt_in
& RX_RES_STATUS_SEC_TYPE_MSK
);
3576 /* packet was not encrypted */
3577 if ((decrypt_in
& RX_RES_STATUS_SEC_TYPE_MSK
) ==
3578 RX_RES_STATUS_SEC_TYPE_NONE
)
3581 /* packet was encrypted with unknown alg */
3582 if ((decrypt_in
& RX_RES_STATUS_SEC_TYPE_MSK
) ==
3583 RX_RES_STATUS_SEC_TYPE_ERR
)
3586 /* decryption was not done in HW */
3587 if ((decrypt_in
& RX_MPDU_RES_STATUS_DEC_DONE_MSK
) !=
3588 RX_MPDU_RES_STATUS_DEC_DONE_MSK
)
3591 switch (decrypt_in
& RX_RES_STATUS_SEC_TYPE_MSK
) {
3593 case RX_RES_STATUS_SEC_TYPE_CCMP
:
3594 /* alg is CCM: check MIC only */
3595 if (!(decrypt_in
& RX_MPDU_RES_STATUS_MIC_OK
))
3597 decrypt_out
|= RX_RES_STATUS_BAD_ICV_MIC
;
3599 decrypt_out
|= RX_RES_STATUS_DECRYPT_OK
;
3603 case RX_RES_STATUS_SEC_TYPE_TKIP
:
3604 if (!(decrypt_in
& RX_MPDU_RES_STATUS_TTAK_OK
)) {
3606 decrypt_out
|= RX_RES_STATUS_BAD_KEY_TTAK
;
3609 /* fall through if TTAK OK */
3611 if (!(decrypt_in
& RX_MPDU_RES_STATUS_ICV_OK
))
3612 decrypt_out
|= RX_RES_STATUS_BAD_ICV_MIC
;
3614 decrypt_out
|= RX_RES_STATUS_DECRYPT_OK
;
3618 IWL_DEBUG_RX("decrypt_in:0x%x decrypt_out = 0x%x\n",
3619 decrypt_in
, decrypt_out
);
3624 static void iwl4965_handle_data_packet(struct iwl_priv
*priv
, int is_data
,
3626 struct iwl4965_rx_mem_buffer
*rxb
,
3627 struct ieee80211_rx_status
*stats
)
3629 struct iwl4965_rx_packet
*pkt
= (struct iwl4965_rx_packet
*)rxb
->skb
->data
;
3630 struct iwl4965_rx_phy_res
*rx_start
= (include_phy
) ?
3631 (struct iwl4965_rx_phy_res
*)&(pkt
->u
.raw
[0]) : NULL
;
3632 struct ieee80211_hdr
*hdr
;
3635 unsigned int skblen
;
3637 u32 ampdu_status_legacy
;
3639 if (!include_phy
&& priv
->last_phy_res
[0])
3640 rx_start
= (struct iwl4965_rx_phy_res
*)&priv
->last_phy_res
[1];
3643 IWL_ERROR("MPDU frame without a PHY data\n");
3647 hdr
= (struct ieee80211_hdr
*)((u8
*) & rx_start
[1] +
3648 rx_start
->cfg_phy_cnt
);
3650 len
= le16_to_cpu(rx_start
->byte_count
);
3652 rx_end
= (__le32
*) ((u8
*) & pkt
->u
.raw
[0] +
3653 sizeof(struct iwl4965_rx_phy_res
) +
3654 rx_start
->cfg_phy_cnt
+ len
);
3657 struct iwl4965_rx_mpdu_res_start
*amsdu
=
3658 (struct iwl4965_rx_mpdu_res_start
*)pkt
->u
.raw
;
3660 hdr
= (struct ieee80211_hdr
*)(pkt
->u
.raw
+
3661 sizeof(struct iwl4965_rx_mpdu_res_start
));
3662 len
= le16_to_cpu(amsdu
->byte_count
);
3663 rx_start
->byte_count
= amsdu
->byte_count
;
3664 rx_end
= (__le32
*) (((u8
*) hdr
) + len
);
3666 if (len
> priv
->hw_params
.max_pkt_size
|| len
< 16) {
3667 IWL_WARNING("byte count out of range [16,4K] : %d\n", len
);
3671 ampdu_status
= le32_to_cpu(*rx_end
);
3672 skblen
= ((u8
*) rx_end
- (u8
*) & pkt
->u
.raw
[0]) + sizeof(u32
);
3675 /* New status scheme, need to translate */
3676 ampdu_status_legacy
= ampdu_status
;
3677 ampdu_status
= iwl4965_translate_rx_status(ampdu_status
);
3680 /* start from MAC */
3681 skb_reserve(rxb
->skb
, (void *)hdr
- (void *)pkt
);
3682 skb_put(rxb
->skb
, len
); /* end where data ends */
3684 /* We only process data packets if the interface is open */
3685 if (unlikely(!priv
->is_open
)) {
3686 IWL_DEBUG_DROP_LIMIT
3687 ("Dropping packet while interface is not open.\n");
3692 hdr
= (struct ieee80211_hdr
*)rxb
->skb
->data
;
3694 if (!priv
->cfg
->mod_params
->sw_crypto
)
3695 iwl4965_set_decrypted_flag(priv
, rxb
->skb
, ampdu_status
, stats
);
3697 if (priv
->add_radiotap
)
3698 iwl4965_add_radiotap(priv
, rxb
->skb
, rx_start
, stats
, ampdu_status
);
3700 iwl_update_rx_stats(priv
, le16_to_cpu(hdr
->frame_control
), len
);
3701 ieee80211_rx_irqsafe(priv
->hw
, rxb
->skb
, stats
);
3702 priv
->alloc_rxb_skb
--;
3706 /* Calc max signal level (dBm) among 3 possible receivers */
3707 static int iwl4965_calc_rssi(struct iwl4965_rx_phy_res
*rx_resp
)
3709 /* data from PHY/DSP regarding signal strength, etc.,
3710 * contents are always there, not configurable by host. */
3711 struct iwl4965_rx_non_cfg_phy
*ncphy
=
3712 (struct iwl4965_rx_non_cfg_phy
*)rx_resp
->non_cfg_phy
;
3713 u32 agc
= (le16_to_cpu(ncphy
->agc_info
) & IWL_AGC_DB_MASK
)
3716 u32 valid_antennae
=
3717 (le16_to_cpu(rx_resp
->phy_flags
) & RX_PHY_FLAGS_ANTENNAE_MASK
)
3718 >> RX_PHY_FLAGS_ANTENNAE_OFFSET
;
3722 /* Find max rssi among 3 possible receivers.
3723 * These values are measured by the digital signal processor (DSP).
3724 * They should stay fairly constant even as the signal strength varies,
3725 * if the radio's automatic gain control (AGC) is working right.
3726 * AGC value (see below) will provide the "interesting" info. */
3727 for (i
= 0; i
< 3; i
++)
3728 if (valid_antennae
& (1 << i
))
3729 max_rssi
= max(ncphy
->rssi_info
[i
<< 1], max_rssi
);
3731 IWL_DEBUG_STATS("Rssi In A %d B %d C %d Max %d AGC dB %d\n",
3732 ncphy
->rssi_info
[0], ncphy
->rssi_info
[2], ncphy
->rssi_info
[4],
3735 /* dBm = max_rssi dB - agc dB - constant.
3736 * Higher AGC (higher radio gain) means lower signal. */
3737 return (max_rssi
- agc
- IWL_RSSI_OFFSET
);
3740 #ifdef CONFIG_IWL4965_HT
3742 void iwl4965_init_ht_hw_capab(struct iwl_priv
*priv
,
3743 struct ieee80211_ht_info
*ht_info
,
3744 enum ieee80211_band band
)
3747 memset(ht_info
->supp_mcs_set
, 0, 16);
3749 ht_info
->ht_supported
= 1;
3751 if (band
== IEEE80211_BAND_5GHZ
) {
3752 ht_info
->cap
|= (u16
)IEEE80211_HT_CAP_SUP_WIDTH
;
3753 ht_info
->cap
|= (u16
)IEEE80211_HT_CAP_SGI_40
;
3754 ht_info
->supp_mcs_set
[4] = 0x01;
3756 ht_info
->cap
|= (u16
)IEEE80211_HT_CAP_GRN_FLD
;
3757 ht_info
->cap
|= (u16
)IEEE80211_HT_CAP_SGI_20
;
3758 ht_info
->cap
|= (u16
)(IEEE80211_HT_CAP_MIMO_PS
&
3759 (IWL_MIMO_PS_NONE
<< 2));
3761 if (priv
->cfg
->mod_params
->amsdu_size_8K
)
3762 ht_info
->cap
|= (u16
)IEEE80211_HT_CAP_MAX_AMSDU
;
3764 ht_info
->ampdu_factor
= CFG_HT_RX_AMPDU_FACTOR_DEF
;
3765 ht_info
->ampdu_density
= CFG_HT_MPDU_DENSITY_DEF
;
3767 ht_info
->supp_mcs_set
[0] = 0xFF;
3768 ht_info
->supp_mcs_set
[1] = 0xFF;
3770 #endif /* CONFIG_IWL4965_HT */
3772 static void iwl4965_sta_modify_ps_wake(struct iwl_priv
*priv
, int sta_id
)
3774 unsigned long flags
;
3776 spin_lock_irqsave(&priv
->sta_lock
, flags
);
3777 priv
->stations
[sta_id
].sta
.station_flags
&= ~STA_FLG_PWR_SAVE_MSK
;
3778 priv
->stations
[sta_id
].sta
.station_flags_msk
= STA_FLG_PWR_SAVE_MSK
;
3779 priv
->stations
[sta_id
].sta
.sta
.modify_mask
= 0;
3780 priv
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
3781 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
3783 iwl4965_send_add_station(priv
, &priv
->stations
[sta_id
].sta
, CMD_ASYNC
);
3786 static void iwl4965_update_ps_mode(struct iwl_priv
*priv
, u16 ps_bit
, u8
*addr
)
3788 /* FIXME: need locking over ps_status ??? */
3789 u8 sta_id
= iwl4965_hw_find_station(priv
, addr
);
3791 if (sta_id
!= IWL_INVALID_STATION
) {
3792 u8 sta_awake
= priv
->stations
[sta_id
].
3793 ps_status
== STA_PS_STATUS_WAKE
;
3795 if (sta_awake
&& ps_bit
)
3796 priv
->stations
[sta_id
].ps_status
= STA_PS_STATUS_SLEEP
;
3797 else if (!sta_awake
&& !ps_bit
) {
3798 iwl4965_sta_modify_ps_wake(priv
, sta_id
);
3799 priv
->stations
[sta_id
].ps_status
= STA_PS_STATUS_WAKE
;
3803 #ifdef CONFIG_IWLWIFI_DEBUG
3806 * iwl4965_dbg_report_frame - dump frame to syslog during debug sessions
3808 * You may hack this function to show different aspects of received frames,
3809 * including selective frame dumps.
3810 * group100 parameter selects whether to show 1 out of 100 good frames.
3812 * TODO: This was originally written for 3945, need to audit for
3813 * proper operation with 4965.
3815 static void iwl4965_dbg_report_frame(struct iwl_priv
*priv
,
3816 struct iwl4965_rx_packet
*pkt
,
3817 struct ieee80211_hdr
*header
, int group100
)
3820 u32 print_summary
= 0;
3821 u32 print_dump
= 0; /* set to 1 to dump all frames' contents */
3838 struct iwl4965_rx_frame_stats
*rx_stats
= IWL_RX_STATS(pkt
);
3839 struct iwl4965_rx_frame_hdr
*rx_hdr
= IWL_RX_HDR(pkt
);
3840 struct iwl4965_rx_frame_end
*rx_end
= IWL_RX_END(pkt
);
3841 u8
*data
= IWL_RX_DATA(pkt
);
3843 if (likely(!(iwl_debug_level
& IWL_DL_RX
)))
3847 fc
= le16_to_cpu(header
->frame_control
);
3848 seq_ctl
= le16_to_cpu(header
->seq_ctrl
);
3851 channel
= le16_to_cpu(rx_hdr
->channel
);
3852 phy_flags
= le16_to_cpu(rx_hdr
->phy_flags
);
3853 rate_sym
= rx_hdr
->rate
;
3854 length
= le16_to_cpu(rx_hdr
->len
);
3856 /* end-of-frame status and timestamp */
3857 status
= le32_to_cpu(rx_end
->status
);
3858 bcn_tmr
= le32_to_cpu(rx_end
->beacon_timestamp
);
3859 tsf_low
= le64_to_cpu(rx_end
->timestamp
) & 0x0ffffffff;
3860 tsf
= le64_to_cpu(rx_end
->timestamp
);
3862 /* signal statistics */
3863 rssi
= rx_stats
->rssi
;
3864 agc
= rx_stats
->agc
;
3865 sig_avg
= le16_to_cpu(rx_stats
->sig_avg
);
3866 noise_diff
= le16_to_cpu(rx_stats
->noise_diff
);
3868 to_us
= !compare_ether_addr(header
->addr1
, priv
->mac_addr
);
3870 /* if data frame is to us and all is good,
3871 * (optionally) print summary for only 1 out of every 100 */
3872 if (to_us
&& (fc
& ~IEEE80211_FCTL_PROTECTED
) ==
3873 (IEEE80211_FCTL_FROMDS
| IEEE80211_FTYPE_DATA
)) {
3876 print_summary
= 1; /* print each frame */
3877 else if (priv
->framecnt_to_us
< 100) {
3878 priv
->framecnt_to_us
++;
3881 priv
->framecnt_to_us
= 0;
3886 /* print summary for all other frames */
3890 if (print_summary
) {
3896 title
= "100Frames";
3897 else if (fc
& IEEE80211_FCTL_RETRY
)
3899 else if (ieee80211_is_assoc_response(fc
))
3901 else if (ieee80211_is_reassoc_response(fc
))
3903 else if (ieee80211_is_probe_response(fc
)) {
3905 print_dump
= 1; /* dump frame contents */
3906 } else if (ieee80211_is_beacon(fc
)) {
3908 print_dump
= 1; /* dump frame contents */
3909 } else if (ieee80211_is_atim(fc
))
3911 else if (ieee80211_is_auth(fc
))
3913 else if (ieee80211_is_deauth(fc
))
3915 else if (ieee80211_is_disassoc(fc
))
3920 rate_idx
= iwl4965_hwrate_to_plcp_idx(rate_sym
);
3921 if (unlikely(rate_idx
== -1))
3924 bitrate
= iwl4965_rates
[rate_idx
].ieee
/ 2;
3926 /* print frame summary.
3927 * MAC addresses show just the last byte (for brevity),
3928 * but you can hack it to show more, if you'd like to. */
3930 IWL_DEBUG_RX("%s: mhd=0x%04x, dst=0x%02x, "
3931 "len=%u, rssi=%d, chnl=%d, rate=%u, \n",
3932 title
, fc
, header
->addr1
[5],
3933 length
, rssi
, channel
, bitrate
);
3935 /* src/dst addresses assume managed mode */
3936 IWL_DEBUG_RX("%s: 0x%04x, dst=0x%02x, "
3937 "src=0x%02x, rssi=%u, tim=%lu usec, "
3938 "phy=0x%02x, chnl=%d\n",
3939 title
, fc
, header
->addr1
[5],
3940 header
->addr3
[5], rssi
,
3941 tsf_low
- priv
->scan_start_tsf
,
3942 phy_flags
, channel
);
3946 iwl_print_hex_dump(IWL_DL_RX
, data
, length
);
3949 static inline void iwl4965_dbg_report_frame(struct iwl_priv
*priv
,
3950 struct iwl4965_rx_packet
*pkt
,
3951 struct ieee80211_hdr
*header
,
3959 /* Called for REPLY_RX (legacy ABG frames), or
3960 * REPLY_RX_MPDU_CMD (HT high-throughput N frames). */
3961 static void iwl4965_rx_reply_rx(struct iwl_priv
*priv
,
3962 struct iwl4965_rx_mem_buffer
*rxb
)
3964 struct ieee80211_hdr
*header
;
3965 struct ieee80211_rx_status rx_status
;
3966 struct iwl4965_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
3967 /* Use phy data (Rx signal strength, etc.) contained within
3968 * this rx packet for legacy frames,
3969 * or phy data cached from REPLY_RX_PHY_CMD for HT frames. */
3970 int include_phy
= (pkt
->hdr
.cmd
== REPLY_RX
);
3971 struct iwl4965_rx_phy_res
*rx_start
= (include_phy
) ?
3972 (struct iwl4965_rx_phy_res
*)&(pkt
->u
.raw
[0]) :
3973 (struct iwl4965_rx_phy_res
*)&priv
->last_phy_res
[1];
3975 unsigned int len
= 0;
3979 rx_status
.mactime
= le64_to_cpu(rx_start
->timestamp
);
3981 ieee80211_frequency_to_channel(le16_to_cpu(rx_start
->channel
));
3982 rx_status
.band
= (rx_start
->phy_flags
& RX_RES_PHY_FLAGS_BAND_24_MSK
) ?
3983 IEEE80211_BAND_2GHZ
: IEEE80211_BAND_5GHZ
;
3984 rx_status
.rate_idx
=
3985 iwl4965_hwrate_to_plcp_idx(le32_to_cpu(rx_start
->rate_n_flags
));
3986 if (rx_status
.band
== IEEE80211_BAND_5GHZ
)
3987 rx_status
.rate_idx
-= IWL_FIRST_OFDM_RATE
;
3989 rx_status
.antenna
= 0;
3992 if ((unlikely(rx_start
->cfg_phy_cnt
> 20))) {
3993 IWL_DEBUG_DROP("dsp size out of range [0,20]: %d/n",
3994 rx_start
->cfg_phy_cnt
);
3999 if (priv
->last_phy_res
[0])
4000 rx_start
= (struct iwl4965_rx_phy_res
*)
4001 &priv
->last_phy_res
[1];
4007 IWL_ERROR("MPDU frame without a PHY data\n");
4012 header
= (struct ieee80211_hdr
*)((u8
*) & rx_start
[1]
4013 + rx_start
->cfg_phy_cnt
);
4015 len
= le16_to_cpu(rx_start
->byte_count
);
4016 rx_end
= (__le32
*)(pkt
->u
.raw
+ rx_start
->cfg_phy_cnt
+
4017 sizeof(struct iwl4965_rx_phy_res
) + len
);
4019 struct iwl4965_rx_mpdu_res_start
*amsdu
=
4020 (struct iwl4965_rx_mpdu_res_start
*)pkt
->u
.raw
;
4022 header
= (void *)(pkt
->u
.raw
+
4023 sizeof(struct iwl4965_rx_mpdu_res_start
));
4024 len
= le16_to_cpu(amsdu
->byte_count
);
4025 rx_end
= (__le32
*) (pkt
->u
.raw
+
4026 sizeof(struct iwl4965_rx_mpdu_res_start
) + len
);
4029 if (!(*rx_end
& RX_RES_STATUS_NO_CRC32_ERROR
) ||
4030 !(*rx_end
& RX_RES_STATUS_NO_RXE_OVERFLOW
)) {
4031 IWL_DEBUG_RX("Bad CRC or FIFO: 0x%08X.\n",
4032 le32_to_cpu(*rx_end
));
4036 priv
->ucode_beacon_time
= le32_to_cpu(rx_start
->beacon_time_stamp
);
4038 /* Find max signal strength (dBm) among 3 antenna/receiver chains */
4039 rx_status
.ssi
= iwl4965_calc_rssi(rx_start
);
4041 /* Meaningful noise values are available only from beacon statistics,
4042 * which are gathered only when associated, and indicate noise
4043 * only for the associated network channel ...
4044 * Ignore these noise values while scanning (other channels) */
4045 if (iwl_is_associated(priv
) &&
4046 !test_bit(STATUS_SCANNING
, &priv
->status
)) {
4047 rx_status
.noise
= priv
->last_rx_noise
;
4048 rx_status
.signal
= iwl4965_calc_sig_qual(rx_status
.ssi
,
4051 rx_status
.noise
= IWL_NOISE_MEAS_NOT_AVAILABLE
;
4052 rx_status
.signal
= iwl4965_calc_sig_qual(rx_status
.ssi
, 0);
4055 /* Reset beacon noise level if not associated. */
4056 if (!iwl_is_associated(priv
))
4057 priv
->last_rx_noise
= IWL_NOISE_MEAS_NOT_AVAILABLE
;
4059 /* Set "1" to report good data frames in groups of 100 */
4060 /* FIXME: need to optimze the call: */
4061 iwl4965_dbg_report_frame(priv
, pkt
, header
, 1);
4063 IWL_DEBUG_STATS_LIMIT("Rssi %d, noise %d, qual %d, TSF %llu\n",
4064 rx_status
.ssi
, rx_status
.noise
, rx_status
.signal
,
4065 (unsigned long long)rx_status
.mactime
);
4067 network_packet
= iwl4965_is_network_packet(priv
, header
);
4068 if (network_packet
) {
4069 priv
->last_rx_rssi
= rx_status
.ssi
;
4070 priv
->last_beacon_time
= priv
->ucode_beacon_time
;
4071 priv
->last_tsf
= le64_to_cpu(rx_start
->timestamp
);
4074 fc
= le16_to_cpu(header
->frame_control
);
4075 switch (fc
& IEEE80211_FCTL_FTYPE
) {
4076 case IEEE80211_FTYPE_MGMT
:
4077 if (priv
->iw_mode
== IEEE80211_IF_TYPE_AP
)
4078 iwl4965_update_ps_mode(priv
, fc
& IEEE80211_FCTL_PM
,
4080 iwl4965_handle_data_packet(priv
, 0, include_phy
, rxb
, &rx_status
);
4083 case IEEE80211_FTYPE_CTL
:
4084 #ifdef CONFIG_IWL4965_HT
4085 switch (fc
& IEEE80211_FCTL_STYPE
) {
4086 case IEEE80211_STYPE_BACK_REQ
:
4087 IWL_DEBUG_HT("IEEE80211_STYPE_BACK_REQ arrived\n");
4088 iwl4965_handle_data_packet(priv
, 0, include_phy
,
4097 case IEEE80211_FTYPE_DATA
: {
4098 DECLARE_MAC_BUF(mac1
);
4099 DECLARE_MAC_BUF(mac2
);
4100 DECLARE_MAC_BUF(mac3
);
4102 if (priv
->iw_mode
== IEEE80211_IF_TYPE_AP
)
4103 iwl4965_update_ps_mode(priv
, fc
& IEEE80211_FCTL_PM
,
4106 if (unlikely(!network_packet
))
4107 IWL_DEBUG_DROP("Dropping (non network): "
4109 print_mac(mac1
, header
->addr1
),
4110 print_mac(mac2
, header
->addr2
),
4111 print_mac(mac3
, header
->addr3
));
4112 else if (unlikely(iwl4965_is_duplicate_packet(priv
, header
)))
4113 IWL_DEBUG_DROP("Dropping (dup): %s, %s, %s\n",
4114 print_mac(mac1
, header
->addr1
),
4115 print_mac(mac2
, header
->addr2
),
4116 print_mac(mac3
, header
->addr3
));
4118 iwl4965_handle_data_packet(priv
, 1, include_phy
, rxb
,
4128 /* Cache phy data (Rx signal strength, etc) for HT frame (REPLY_RX_PHY_CMD).
4129 * This will be used later in iwl4965_rx_reply_rx() for REPLY_RX_MPDU_CMD. */
4130 static void iwl4965_rx_reply_rx_phy(struct iwl_priv
*priv
,
4131 struct iwl4965_rx_mem_buffer
*rxb
)
4133 struct iwl4965_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
4134 priv
->last_phy_res
[0] = 1;
4135 memcpy(&priv
->last_phy_res
[1], &(pkt
->u
.raw
[0]),
4136 sizeof(struct iwl4965_rx_phy_res
));
4138 static void iwl4965_rx_missed_beacon_notif(struct iwl_priv
*priv
,
4139 struct iwl4965_rx_mem_buffer
*rxb
)
4142 #ifdef CONFIG_IWL4965_SENSITIVITY
4143 struct iwl4965_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
4144 struct iwl4965_missed_beacon_notif
*missed_beacon
;
4146 missed_beacon
= &pkt
->u
.missed_beacon
;
4147 if (le32_to_cpu(missed_beacon
->consequtive_missed_beacons
) > 5) {
4148 IWL_DEBUG_CALIB("missed bcn cnsq %d totl %d rcd %d expctd %d\n",
4149 le32_to_cpu(missed_beacon
->consequtive_missed_beacons
),
4150 le32_to_cpu(missed_beacon
->total_missed_becons
),
4151 le32_to_cpu(missed_beacon
->num_recvd_beacons
),
4152 le32_to_cpu(missed_beacon
->num_expected_beacons
));
4153 priv
->sensitivity_data
.state
= IWL_SENS_CALIB_NEED_REINIT
;
4154 if (unlikely(!test_bit(STATUS_SCANNING
, &priv
->status
)))
4155 queue_work(priv
->workqueue
, &priv
->sensitivity_work
);
4157 #endif /*CONFIG_IWL4965_SENSITIVITY*/
4159 #ifdef CONFIG_IWL4965_HT
4162 * iwl4965_sta_modify_enable_tid_tx - Enable Tx for this TID in station table
4164 static void iwl4965_sta_modify_enable_tid_tx(struct iwl_priv
*priv
,
4165 int sta_id
, int tid
)
4167 unsigned long flags
;
4169 /* Remove "disable" flag, to enable Tx for this TID */
4170 spin_lock_irqsave(&priv
->sta_lock
, flags
);
4171 priv
->stations
[sta_id
].sta
.sta
.modify_mask
= STA_MODIFY_TID_DISABLE_TX
;
4172 priv
->stations
[sta_id
].sta
.tid_disable_tx
&= cpu_to_le16(~(1 << tid
));
4173 priv
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
4174 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
4176 iwl4965_send_add_station(priv
, &priv
->stations
[sta_id
].sta
, CMD_ASYNC
);
4180 * iwl4965_tx_status_reply_compressed_ba - Update tx status from block-ack
4182 * Go through block-ack's bitmap of ACK'd frames, update driver's record of
4183 * ACK vs. not. This gets sent to mac80211, then to rate scaling algo.
4185 static int iwl4965_tx_status_reply_compressed_ba(struct iwl_priv
*priv
,
4186 struct iwl4965_ht_agg
*agg
,
4187 struct iwl4965_compressed_ba_resp
*
4192 u16 seq_ctl
= le16_to_cpu(ba_resp
->seq_ctl
);
4193 u16 scd_flow
= le16_to_cpu(ba_resp
->scd_flow
);
4196 struct ieee80211_tx_status
*tx_status
;
4198 if (unlikely(!agg
->wait_for_ba
)) {
4199 IWL_ERROR("Received BA when not expected\n");
4203 /* Mark that the expected block-ack response arrived */
4204 agg
->wait_for_ba
= 0;
4205 IWL_DEBUG_TX_REPLY("BA %d %d\n", agg
->start_idx
, ba_resp
->seq_ctl
);
4207 /* Calculate shift to align block-ack bits with our Tx window bits */
4208 sh
= agg
->start_idx
- SEQ_TO_INDEX(seq_ctl
>>4);
4209 if (sh
< 0) /* tbw something is wrong with indices */
4212 /* don't use 64-bit values for now */
4213 bitmap
= le64_to_cpu(ba_resp
->bitmap
) >> sh
;
4215 if (agg
->frame_count
> (64 - sh
)) {
4216 IWL_DEBUG_TX_REPLY("more frames than bitmap size");
4220 /* check for success or failure according to the
4221 * transmitted bitmap and block-ack bitmap */
4222 bitmap
&= agg
->bitmap
;
4224 /* For each frame attempted in aggregation,
4225 * update driver's record of tx frame's status. */
4226 for (i
= 0; i
< agg
->frame_count
; i
++) {
4227 ack
= bitmap
& (1 << i
);
4229 IWL_DEBUG_TX_REPLY("%s ON i=%d idx=%d raw=%d\n",
4230 ack
? "ACK":"NACK", i
, (agg
->start_idx
+ i
) & 0xff,
4231 agg
->start_idx
+ i
);
4234 tx_status
= &priv
->txq
[scd_flow
].txb
[agg
->start_idx
].status
;
4235 tx_status
->flags
= IEEE80211_TX_STATUS_ACK
;
4236 tx_status
->flags
|= IEEE80211_TX_STATUS_AMPDU
;
4237 tx_status
->ampdu_ack_map
= successes
;
4238 tx_status
->ampdu_ack_len
= agg
->frame_count
;
4239 iwl4965_hwrate_to_tx_control(priv
, agg
->rate_n_flags
,
4240 &tx_status
->control
);
4242 IWL_DEBUG_TX_REPLY("Bitmap %llx\n", (unsigned long long)bitmap
);
4248 * iwl4965_tx_queue_stop_scheduler - Stop queue, but keep configuration
4250 static void iwl4965_tx_queue_stop_scheduler(struct iwl_priv
*priv
,
4253 /* Simply stop the queue, but don't change any configuration;
4254 * the SCD_ACT_EN bit is the write-enable mask for the ACTIVE bit. */
4255 iwl_write_prph(priv
,
4256 IWL49_SCD_QUEUE_STATUS_BITS(txq_id
),
4257 (0 << SCD_QUEUE_STTS_REG_POS_ACTIVE
)|
4258 (1 << SCD_QUEUE_STTS_REG_POS_SCD_ACT_EN
));
4262 * txq_id must be greater than IWL_BACK_QUEUE_FIRST_ID
4263 * priv->lock must be held by the caller
4265 static int iwl4965_tx_queue_agg_disable(struct iwl_priv
*priv
, u16 txq_id
,
4266 u16 ssn_idx
, u8 tx_fifo
)
4270 if (IWL_BACK_QUEUE_FIRST_ID
> txq_id
) {
4271 IWL_WARNING("queue number too small: %d, must be > %d\n",
4272 txq_id
, IWL_BACK_QUEUE_FIRST_ID
);
4276 ret
= iwl_grab_nic_access(priv
);
4280 iwl4965_tx_queue_stop_scheduler(priv
, txq_id
);
4282 iwl_clear_bits_prph(priv
, IWL49_SCD_QUEUECHAIN_SEL
, (1 << txq_id
));
4284 priv
->txq
[txq_id
].q
.read_ptr
= (ssn_idx
& 0xff);
4285 priv
->txq
[txq_id
].q
.write_ptr
= (ssn_idx
& 0xff);
4286 /* supposes that ssn_idx is valid (!= 0xFFF) */
4287 iwl4965_set_wr_ptrs(priv
, txq_id
, ssn_idx
);
4289 iwl_clear_bits_prph(priv
, IWL49_SCD_INTERRUPT_MASK
, (1 << txq_id
));
4290 iwl4965_txq_ctx_deactivate(priv
, txq_id
);
4291 iwl4965_tx_queue_set_status(priv
, &priv
->txq
[txq_id
], tx_fifo
, 0);
4293 iwl_release_nic_access(priv
);
4298 int iwl4965_check_empty_hw_queue(struct iwl_priv
*priv
, int sta_id
,
4301 struct iwl4965_queue
*q
= &priv
->txq
[txq_id
].q
;
4302 u8
*addr
= priv
->stations
[sta_id
].sta
.sta
.addr
;
4303 struct iwl4965_tid_data
*tid_data
= &priv
->stations
[sta_id
].tid
[tid
];
4305 switch (priv
->stations
[sta_id
].tid
[tid
].agg
.state
) {
4306 case IWL_EMPTYING_HW_QUEUE_DELBA
:
4307 /* We are reclaiming the last packet of the */
4308 /* aggregated HW queue */
4309 if (txq_id
== tid_data
->agg
.txq_id
&&
4310 q
->read_ptr
== q
->write_ptr
) {
4311 u16 ssn
= SEQ_TO_SN(tid_data
->seq_number
);
4312 int tx_fifo
= default_tid_to_tx_fifo
[tid
];
4313 IWL_DEBUG_HT("HW queue empty: continue DELBA flow\n");
4314 iwl4965_tx_queue_agg_disable(priv
, txq_id
,
4316 tid_data
->agg
.state
= IWL_AGG_OFF
;
4317 ieee80211_stop_tx_ba_cb_irqsafe(priv
->hw
, addr
, tid
);
4320 case IWL_EMPTYING_HW_QUEUE_ADDBA
:
4321 /* We are reclaiming the last packet of the queue */
4322 if (tid_data
->tfds_in_queue
== 0) {
4323 IWL_DEBUG_HT("HW queue empty: continue ADDBA flow\n");
4324 tid_data
->agg
.state
= IWL_AGG_ON
;
4325 ieee80211_start_tx_ba_cb_irqsafe(priv
->hw
, addr
, tid
);
4333 * iwl4965_queue_dec_wrap - Decrement queue index, wrap back to end if needed
4334 * @index -- current index
4335 * @n_bd -- total number of entries in queue (s/b power of 2)
4337 static inline int iwl4965_queue_dec_wrap(int index
, int n_bd
)
4339 return (index
== 0) ? n_bd
- 1 : index
- 1;
4343 * iwl4965_rx_reply_compressed_ba - Handler for REPLY_COMPRESSED_BA
4345 * Handles block-acknowledge notification from device, which reports success
4346 * of frames sent via aggregation.
4348 static void iwl4965_rx_reply_compressed_ba(struct iwl_priv
*priv
,
4349 struct iwl4965_rx_mem_buffer
*rxb
)
4351 struct iwl4965_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
4352 struct iwl4965_compressed_ba_resp
*ba_resp
= &pkt
->u
.compressed_ba
;
4354 struct iwl4965_tx_queue
*txq
= NULL
;
4355 struct iwl4965_ht_agg
*agg
;
4356 DECLARE_MAC_BUF(mac
);
4358 /* "flow" corresponds to Tx queue */
4359 u16 scd_flow
= le16_to_cpu(ba_resp
->scd_flow
);
4361 /* "ssn" is start of block-ack Tx window, corresponds to index
4362 * (in Tx queue's circular buffer) of first TFD/frame in window */
4363 u16 ba_resp_scd_ssn
= le16_to_cpu(ba_resp
->scd_ssn
);
4365 if (scd_flow
>= priv
->hw_params
.max_txq_num
) {
4366 IWL_ERROR("BUG_ON scd_flow is bigger than number of queues");
4370 txq
= &priv
->txq
[scd_flow
];
4371 agg
= &priv
->stations
[ba_resp
->sta_id
].tid
[ba_resp
->tid
].agg
;
4373 /* Find index just before block-ack window */
4374 index
= iwl4965_queue_dec_wrap(ba_resp_scd_ssn
& 0xff, txq
->q
.n_bd
);
4376 /* TODO: Need to get this copy more safely - now good for debug */
4378 IWL_DEBUG_TX_REPLY("REPLY_COMPRESSED_BA [%d]Received from %s, "
4381 print_mac(mac
, (u8
*) &ba_resp
->sta_addr_lo32
),
4383 IWL_DEBUG_TX_REPLY("TID = %d, SeqCtl = %d, bitmap = 0x%llx, scd_flow = "
4384 "%d, scd_ssn = %d\n",
4387 (unsigned long long)le64_to_cpu(ba_resp
->bitmap
),
4390 IWL_DEBUG_TX_REPLY("DAT start_idx = %d, bitmap = 0x%llx \n",
4392 (unsigned long long)agg
->bitmap
);
4394 /* Update driver's record of ACK vs. not for each frame in window */
4395 iwl4965_tx_status_reply_compressed_ba(priv
, agg
, ba_resp
);
4397 /* Release all TFDs before the SSN, i.e. all TFDs in front of
4398 * block-ack window (we assume that they've been successfully
4399 * transmitted ... if not, it's too late anyway). */
4400 if (txq
->q
.read_ptr
!= (ba_resp_scd_ssn
& 0xff)) {
4401 int freed
= iwl4965_tx_queue_reclaim(priv
, scd_flow
, index
);
4402 priv
->stations
[ba_resp
->sta_id
].
4403 tid
[ba_resp
->tid
].tfds_in_queue
-= freed
;
4404 if (iwl4965_queue_space(&txq
->q
) > txq
->q
.low_mark
&&
4405 priv
->mac80211_registered
&&
4406 agg
->state
!= IWL_EMPTYING_HW_QUEUE_DELBA
)
4407 ieee80211_wake_queue(priv
->hw
, scd_flow
);
4408 iwl4965_check_empty_hw_queue(priv
, ba_resp
->sta_id
,
4409 ba_resp
->tid
, scd_flow
);
4414 * iwl4965_tx_queue_set_q2ratid - Map unique receiver/tid combination to a queue
4416 static int iwl4965_tx_queue_set_q2ratid(struct iwl_priv
*priv
, u16 ra_tid
,
4423 scd_q2ratid
= ra_tid
& SCD_QUEUE_RA_TID_MAP_RATID_MSK
;
4425 tbl_dw_addr
= priv
->scd_base_addr
+
4426 SCD_TRANSLATE_TBL_OFFSET_QUEUE(txq_id
);
4428 tbl_dw
= iwl_read_targ_mem(priv
, tbl_dw_addr
);
4431 tbl_dw
= (scd_q2ratid
<< 16) | (tbl_dw
& 0x0000FFFF);
4433 tbl_dw
= scd_q2ratid
| (tbl_dw
& 0xFFFF0000);
4435 iwl_write_targ_mem(priv
, tbl_dw_addr
, tbl_dw
);
4442 * iwl4965_tx_queue_agg_enable - Set up & enable aggregation for selected queue
4444 * NOTE: txq_id must be greater than IWL_BACK_QUEUE_FIRST_ID,
4445 * i.e. it must be one of the higher queues used for aggregation
4447 static int iwl4965_tx_queue_agg_enable(struct iwl_priv
*priv
, int txq_id
,
4448 int tx_fifo
, int sta_id
, int tid
,
4451 unsigned long flags
;
4455 if (IWL_BACK_QUEUE_FIRST_ID
> txq_id
)
4456 IWL_WARNING("queue number too small: %d, must be > %d\n",
4457 txq_id
, IWL_BACK_QUEUE_FIRST_ID
);
4459 ra_tid
= BUILD_RAxTID(sta_id
, tid
);
4461 /* Modify device's station table to Tx this TID */
4462 iwl4965_sta_modify_enable_tid_tx(priv
, sta_id
, tid
);
4464 spin_lock_irqsave(&priv
->lock
, flags
);
4465 rc
= iwl_grab_nic_access(priv
);
4467 spin_unlock_irqrestore(&priv
->lock
, flags
);
4471 /* Stop this Tx queue before configuring it */
4472 iwl4965_tx_queue_stop_scheduler(priv
, txq_id
);
4474 /* Map receiver-address / traffic-ID to this queue */
4475 iwl4965_tx_queue_set_q2ratid(priv
, ra_tid
, txq_id
);
4477 /* Set this queue as a chain-building queue */
4478 iwl_set_bits_prph(priv
, IWL49_SCD_QUEUECHAIN_SEL
, (1 << txq_id
));
4480 /* Place first TFD at index corresponding to start sequence number.
4481 * Assumes that ssn_idx is valid (!= 0xFFF) */
4482 priv
->txq
[txq_id
].q
.read_ptr
= (ssn_idx
& 0xff);
4483 priv
->txq
[txq_id
].q
.write_ptr
= (ssn_idx
& 0xff);
4484 iwl4965_set_wr_ptrs(priv
, txq_id
, ssn_idx
);
4486 /* Set up Tx window size and frame limit for this queue */
4487 iwl_write_targ_mem(priv
,
4488 priv
->scd_base_addr
+ SCD_CONTEXT_QUEUE_OFFSET(txq_id
),
4489 (SCD_WIN_SIZE
<< SCD_QUEUE_CTX_REG1_WIN_SIZE_POS
) &
4490 SCD_QUEUE_CTX_REG1_WIN_SIZE_MSK
);
4492 iwl_write_targ_mem(priv
, priv
->scd_base_addr
+
4493 SCD_CONTEXT_QUEUE_OFFSET(txq_id
) + sizeof(u32
),
4494 (SCD_FRAME_LIMIT
<< SCD_QUEUE_CTX_REG2_FRAME_LIMIT_POS
)
4495 & SCD_QUEUE_CTX_REG2_FRAME_LIMIT_MSK
);
4497 iwl_set_bits_prph(priv
, IWL49_SCD_INTERRUPT_MASK
, (1 << txq_id
));
4499 /* Set up Status area in SRAM, map to Tx DMA/FIFO, activate the queue */
4500 iwl4965_tx_queue_set_status(priv
, &priv
->txq
[txq_id
], tx_fifo
, 1);
4502 iwl_release_nic_access(priv
);
4503 spin_unlock_irqrestore(&priv
->lock
, flags
);
4508 #endif /* CONFIG_IWL4965_HT */
4511 * iwl4965_add_station - Initialize a station's hardware rate table
4513 * The uCode's station table contains a table of fallback rates
4514 * for automatic fallback during transmission.
4516 * NOTE: This sets up a default set of values. These will be replaced later
4517 * if the driver's iwl-4965-rs rate scaling algorithm is used, instead of
4520 * NOTE: Run REPLY_ADD_STA command to set up station table entry, before
4521 * calling this function (which runs REPLY_TX_LINK_QUALITY_CMD,
4522 * which requires station table entry to exist).
4524 void iwl4965_add_station(struct iwl_priv
*priv
, const u8
*addr
, int is_ap
)
4527 struct iwl_link_quality_cmd link_cmd
= {
4532 /* Set up the rate scaling to start at selected rate, fall back
4533 * all the way down to 1M in IEEE order, and then spin on 1M */
4535 r
= IWL_RATE_54M_INDEX
;
4536 else if (priv
->band
== IEEE80211_BAND_5GHZ
)
4537 r
= IWL_RATE_6M_INDEX
;
4539 r
= IWL_RATE_1M_INDEX
;
4541 for (i
= 0; i
< LINK_QUAL_MAX_RETRY_NUM
; i
++) {
4543 if (r
>= IWL_FIRST_CCK_RATE
&& r
<= IWL_LAST_CCK_RATE
)
4544 rate_flags
|= RATE_MCS_CCK_MSK
;
4546 /* Use Tx antenna B only */
4547 rate_flags
|= RATE_MCS_ANT_B_MSK
;
4548 rate_flags
&= ~RATE_MCS_ANT_A_MSK
;
4550 link_cmd
.rs_table
[i
].rate_n_flags
=
4551 iwl4965_hw_set_rate_n_flags(iwl4965_rates
[r
].plcp
, rate_flags
);
4552 r
= iwl4965_get_prev_ieee_rate(r
);
4555 link_cmd
.general_params
.single_stream_ant_msk
= 2;
4556 link_cmd
.general_params
.dual_stream_ant_msk
= 3;
4557 link_cmd
.agg_params
.agg_dis_start_th
= 3;
4558 link_cmd
.agg_params
.agg_time_limit
= cpu_to_le16(4000);
4560 /* Update the rate scaling for control frame Tx to AP */
4561 link_cmd
.sta_id
= is_ap
? IWL_AP_ID
: priv
->hw_params
.bcast_sta_id
;
4563 iwl_send_cmd_pdu_async(priv
, REPLY_TX_LINK_QUALITY_CMD
,
4564 sizeof(link_cmd
), &link_cmd
, NULL
);
4567 #ifdef CONFIG_IWL4965_HT
4569 static u8
iwl4965_is_channel_extension(struct iwl_priv
*priv
,
4570 enum ieee80211_band band
,
4571 u16 channel
, u8 extension_chan_offset
)
4573 const struct iwl_channel_info
*ch_info
;
4575 ch_info
= iwl_get_channel_info(priv
, band
, channel
);
4576 if (!is_channel_valid(ch_info
))
4579 if (extension_chan_offset
== IWL_EXT_CHANNEL_OFFSET_NONE
)
4582 if ((ch_info
->fat_extension_channel
== extension_chan_offset
) ||
4583 (ch_info
->fat_extension_channel
== HT_IE_EXT_CHANNEL_MAX
))
4589 static u8
iwl4965_is_fat_tx_allowed(struct iwl_priv
*priv
,
4590 struct ieee80211_ht_info
*sta_ht_inf
)
4592 struct iwl_ht_info
*iwl_ht_conf
= &priv
->current_ht_config
;
4594 if ((!iwl_ht_conf
->is_ht
) ||
4595 (iwl_ht_conf
->supported_chan_width
!= IWL_CHANNEL_WIDTH_40MHZ
) ||
4596 (iwl_ht_conf
->extension_chan_offset
== IWL_EXT_CHANNEL_OFFSET_NONE
))
4600 if ((!sta_ht_inf
->ht_supported
) ||
4601 (!(sta_ht_inf
->cap
& IEEE80211_HT_CAP_SUP_WIDTH
)))
4605 return (iwl4965_is_channel_extension(priv
, priv
->band
,
4606 iwl_ht_conf
->control_channel
,
4607 iwl_ht_conf
->extension_chan_offset
));
4610 void iwl4965_set_rxon_ht(struct iwl_priv
*priv
, struct iwl_ht_info
*ht_info
)
4612 struct iwl4965_rxon_cmd
*rxon
= &priv
->staging_rxon
;
4615 if (!ht_info
->is_ht
)
4618 /* Set up channel bandwidth: 20 MHz only, or 20/40 mixed if fat ok */
4619 if (iwl4965_is_fat_tx_allowed(priv
, NULL
))
4620 rxon
->flags
|= RXON_FLG_CHANNEL_MODE_MIXED_MSK
;
4622 rxon
->flags
&= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK
|
4623 RXON_FLG_CHANNEL_MODE_PURE_40_MSK
);
4625 if (le16_to_cpu(rxon
->channel
) != ht_info
->control_channel
) {
4626 IWL_DEBUG_ASSOC("control diff than current %d %d\n",
4627 le16_to_cpu(rxon
->channel
),
4628 ht_info
->control_channel
);
4629 rxon
->channel
= cpu_to_le16(ht_info
->control_channel
);
4633 /* Note: control channel is opposite of extension channel */
4634 switch (ht_info
->extension_chan_offset
) {
4635 case IWL_EXT_CHANNEL_OFFSET_ABOVE
:
4636 rxon
->flags
&= ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK
);
4638 case IWL_EXT_CHANNEL_OFFSET_BELOW
:
4639 rxon
->flags
|= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK
;
4641 case IWL_EXT_CHANNEL_OFFSET_NONE
:
4643 rxon
->flags
&= ~RXON_FLG_CHANNEL_MODE_MIXED_MSK
;
4647 val
= ht_info
->ht_protection
;
4649 rxon
->flags
|= cpu_to_le32(val
<< RXON_FLG_HT_OPERATING_MODE_POS
);
4651 iwl4965_set_rxon_chain(priv
);
4653 IWL_DEBUG_ASSOC("supported HT rate 0x%X %X "
4654 "rxon flags 0x%X operation mode :0x%X "
4655 "extension channel offset 0x%x "
4656 "control chan %d\n",
4657 ht_info
->supp_mcs_set
[0], ht_info
->supp_mcs_set
[1],
4658 le32_to_cpu(rxon
->flags
), ht_info
->ht_protection
,
4659 ht_info
->extension_chan_offset
,
4660 ht_info
->control_channel
);
4664 void iwl4965_set_ht_add_station(struct iwl_priv
*priv
, u8 index
,
4665 struct ieee80211_ht_info
*sta_ht_inf
)
4670 if (!sta_ht_inf
|| !sta_ht_inf
->ht_supported
)
4673 mimo_ps_mode
= (sta_ht_inf
->cap
& IEEE80211_HT_CAP_MIMO_PS
) >> 2;
4675 sta_flags
= priv
->stations
[index
].sta
.station_flags
;
4677 sta_flags
&= ~(STA_FLG_RTS_MIMO_PROT_MSK
| STA_FLG_MIMO_DIS_MSK
);
4679 switch (mimo_ps_mode
) {
4680 case WLAN_HT_CAP_MIMO_PS_STATIC
:
4681 sta_flags
|= STA_FLG_MIMO_DIS_MSK
;
4683 case WLAN_HT_CAP_MIMO_PS_DYNAMIC
:
4684 sta_flags
|= STA_FLG_RTS_MIMO_PROT_MSK
;
4686 case WLAN_HT_CAP_MIMO_PS_DISABLED
:
4689 IWL_WARNING("Invalid MIMO PS mode %d", mimo_ps_mode
);
4693 sta_flags
|= cpu_to_le32(
4694 (u32
)sta_ht_inf
->ampdu_factor
<< STA_FLG_MAX_AGG_SIZE_POS
);
4696 sta_flags
|= cpu_to_le32(
4697 (u32
)sta_ht_inf
->ampdu_density
<< STA_FLG_AGG_MPDU_DENSITY_POS
);
4699 if (iwl4965_is_fat_tx_allowed(priv
, sta_ht_inf
))
4700 sta_flags
|= STA_FLG_FAT_EN_MSK
;
4702 sta_flags
&= ~STA_FLG_FAT_EN_MSK
;
4704 priv
->stations
[index
].sta
.station_flags
= sta_flags
;
4709 static void iwl4965_sta_modify_add_ba_tid(struct iwl_priv
*priv
,
4710 int sta_id
, int tid
, u16 ssn
)
4712 unsigned long flags
;
4714 spin_lock_irqsave(&priv
->sta_lock
, flags
);
4715 priv
->stations
[sta_id
].sta
.station_flags_msk
= 0;
4716 priv
->stations
[sta_id
].sta
.sta
.modify_mask
= STA_MODIFY_ADDBA_TID_MSK
;
4717 priv
->stations
[sta_id
].sta
.add_immediate_ba_tid
= (u8
)tid
;
4718 priv
->stations
[sta_id
].sta
.add_immediate_ba_ssn
= cpu_to_le16(ssn
);
4719 priv
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
4720 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
4722 iwl4965_send_add_station(priv
, &priv
->stations
[sta_id
].sta
, CMD_ASYNC
);
4725 static void iwl4965_sta_modify_del_ba_tid(struct iwl_priv
*priv
,
4726 int sta_id
, int tid
)
4728 unsigned long flags
;
4730 spin_lock_irqsave(&priv
->sta_lock
, flags
);
4731 priv
->stations
[sta_id
].sta
.station_flags_msk
= 0;
4732 priv
->stations
[sta_id
].sta
.sta
.modify_mask
= STA_MODIFY_DELBA_TID_MSK
;
4733 priv
->stations
[sta_id
].sta
.remove_immediate_ba_tid
= (u8
)tid
;
4734 priv
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
4735 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
4737 iwl4965_send_add_station(priv
, &priv
->stations
[sta_id
].sta
, CMD_ASYNC
);
4741 * Find first available (lowest unused) Tx Queue, mark it "active".
4742 * Called only when finding queue for aggregation.
4743 * Should never return anything < 7, because they should already
4744 * be in use as EDCA AC (0-3), Command (4), HCCA (5, 6).
4746 static int iwl4965_txq_ctx_activate_free(struct iwl_priv
*priv
)
4750 for (txq_id
= 0; txq_id
< priv
->hw_params
.max_txq_num
; txq_id
++)
4751 if (!test_and_set_bit(txq_id
, &priv
->txq_ctx_active_msk
))
4756 static int iwl4965_mac_ht_tx_agg_start(struct ieee80211_hw
*hw
, const u8
*da
,
4757 u16 tid
, u16
*start_seq_num
)
4759 struct iwl_priv
*priv
= hw
->priv
;
4765 unsigned long flags
;
4766 struct iwl4965_tid_data
*tid_data
;
4767 DECLARE_MAC_BUF(mac
);
4769 if (likely(tid
< ARRAY_SIZE(default_tid_to_tx_fifo
)))
4770 tx_fifo
= default_tid_to_tx_fifo
[tid
];
4774 IWL_WARNING("%s on da = %s tid = %d\n",
4775 __func__
, print_mac(mac
, da
), tid
);
4777 sta_id
= iwl4965_hw_find_station(priv
, da
);
4778 if (sta_id
== IWL_INVALID_STATION
)
4781 if (priv
->stations
[sta_id
].tid
[tid
].agg
.state
!= IWL_AGG_OFF
) {
4782 IWL_ERROR("Start AGG when state is not IWL_AGG_OFF !\n");
4786 txq_id
= iwl4965_txq_ctx_activate_free(priv
);
4790 spin_lock_irqsave(&priv
->sta_lock
, flags
);
4791 tid_data
= &priv
->stations
[sta_id
].tid
[tid
];
4792 ssn
= SEQ_TO_SN(tid_data
->seq_number
);
4793 tid_data
->agg
.txq_id
= txq_id
;
4794 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
4796 *start_seq_num
= ssn
;
4797 ret
= iwl4965_tx_queue_agg_enable(priv
, txq_id
, tx_fifo
,
4803 if (tid_data
->tfds_in_queue
== 0) {
4804 printk(KERN_ERR
"HW queue is empty\n");
4805 tid_data
->agg
.state
= IWL_AGG_ON
;
4806 ieee80211_start_tx_ba_cb_irqsafe(hw
, da
, tid
);
4808 IWL_DEBUG_HT("HW queue is NOT empty: %d packets in HW queue\n",
4809 tid_data
->tfds_in_queue
);
4810 tid_data
->agg
.state
= IWL_EMPTYING_HW_QUEUE_ADDBA
;
4815 static int iwl4965_mac_ht_tx_agg_stop(struct ieee80211_hw
*hw
, const u8
*da
,
4819 struct iwl_priv
*priv
= hw
->priv
;
4820 int tx_fifo_id
, txq_id
, sta_id
, ssn
= -1;
4821 struct iwl4965_tid_data
*tid_data
;
4822 int ret
, write_ptr
, read_ptr
;
4823 unsigned long flags
;
4824 DECLARE_MAC_BUF(mac
);
4827 IWL_ERROR("da = NULL\n");
4831 if (likely(tid
< ARRAY_SIZE(default_tid_to_tx_fifo
)))
4832 tx_fifo_id
= default_tid_to_tx_fifo
[tid
];
4836 sta_id
= iwl4965_hw_find_station(priv
, da
);
4838 if (sta_id
== IWL_INVALID_STATION
)
4841 if (priv
->stations
[sta_id
].tid
[tid
].agg
.state
!= IWL_AGG_ON
)
4842 IWL_WARNING("Stopping AGG while state not IWL_AGG_ON\n");
4844 tid_data
= &priv
->stations
[sta_id
].tid
[tid
];
4845 ssn
= (tid_data
->seq_number
& IEEE80211_SCTL_SEQ
) >> 4;
4846 txq_id
= tid_data
->agg
.txq_id
;
4847 write_ptr
= priv
->txq
[txq_id
].q
.write_ptr
;
4848 read_ptr
= priv
->txq
[txq_id
].q
.read_ptr
;
4850 /* The queue is not empty */
4851 if (write_ptr
!= read_ptr
) {
4852 IWL_DEBUG_HT("Stopping a non empty AGG HW QUEUE\n");
4853 priv
->stations
[sta_id
].tid
[tid
].agg
.state
=
4854 IWL_EMPTYING_HW_QUEUE_DELBA
;
4858 IWL_DEBUG_HT("HW queue empty\n");;
4859 priv
->stations
[sta_id
].tid
[tid
].agg
.state
= IWL_AGG_OFF
;
4861 spin_lock_irqsave(&priv
->lock
, flags
);
4862 ret
= iwl4965_tx_queue_agg_disable(priv
, txq_id
, ssn
, tx_fifo_id
);
4863 spin_unlock_irqrestore(&priv
->lock
, flags
);
4868 ieee80211_stop_tx_ba_cb_irqsafe(priv
->hw
, da
, tid
);
4870 IWL_DEBUG_INFO("iwl4965_mac_ht_tx_agg_stop on da=%s tid=%d\n",
4871 print_mac(mac
, da
), tid
);
4876 int iwl4965_mac_ampdu_action(struct ieee80211_hw
*hw
,
4877 enum ieee80211_ampdu_mlme_action action
,
4878 const u8
*addr
, u16 tid
, u16
*ssn
)
4880 struct iwl_priv
*priv
= hw
->priv
;
4882 DECLARE_MAC_BUF(mac
);
4884 IWL_DEBUG_HT("A-MPDU action on da=%s tid=%d ",
4885 print_mac(mac
, addr
), tid
);
4886 sta_id
= iwl4965_hw_find_station(priv
, addr
);
4888 case IEEE80211_AMPDU_RX_START
:
4889 IWL_DEBUG_HT("start Rx\n");
4890 iwl4965_sta_modify_add_ba_tid(priv
, sta_id
, tid
, *ssn
);
4892 case IEEE80211_AMPDU_RX_STOP
:
4893 IWL_DEBUG_HT("stop Rx\n");
4894 iwl4965_sta_modify_del_ba_tid(priv
, sta_id
, tid
);
4896 case IEEE80211_AMPDU_TX_START
:
4897 IWL_DEBUG_HT("start Tx\n");
4898 return iwl4965_mac_ht_tx_agg_start(hw
, addr
, tid
, ssn
);
4899 case IEEE80211_AMPDU_TX_STOP
:
4900 IWL_DEBUG_HT("stop Tx\n");
4901 return iwl4965_mac_ht_tx_agg_stop(hw
, addr
, tid
);
4903 IWL_DEBUG_HT("unknown\n");
4910 #endif /* CONFIG_IWL4965_HT */
4912 /* Set up 4965-specific Rx frame reply handlers */
4913 void iwl4965_hw_rx_handler_setup(struct iwl_priv
*priv
)
4915 /* Legacy Rx frames */
4916 priv
->rx_handlers
[REPLY_RX
] = iwl4965_rx_reply_rx
;
4918 /* High-throughput (HT) Rx frames */
4919 priv
->rx_handlers
[REPLY_RX_PHY_CMD
] = iwl4965_rx_reply_rx_phy
;
4920 priv
->rx_handlers
[REPLY_RX_MPDU_CMD
] = iwl4965_rx_reply_rx
;
4922 priv
->rx_handlers
[MISSED_BEACONS_NOTIFICATION
] =
4923 iwl4965_rx_missed_beacon_notif
;
4925 #ifdef CONFIG_IWL4965_HT
4926 priv
->rx_handlers
[REPLY_COMPRESSED_BA
] = iwl4965_rx_reply_compressed_ba
;
4927 #endif /* CONFIG_IWL4965_HT */
4930 void iwl4965_hw_setup_deferred_work(struct iwl_priv
*priv
)
4932 INIT_WORK(&priv
->txpower_work
, iwl4965_bg_txpower_work
);
4933 #ifdef CONFIG_IWL4965_SENSITIVITY
4934 INIT_WORK(&priv
->sensitivity_work
, iwl4965_bg_sensitivity_work
);
4936 init_timer(&priv
->statistics_periodic
);
4937 priv
->statistics_periodic
.data
= (unsigned long)priv
;
4938 priv
->statistics_periodic
.function
= iwl4965_bg_statistics_periodic
;
4941 void iwl4965_hw_cancel_deferred_work(struct iwl_priv
*priv
)
4943 del_timer_sync(&priv
->statistics_periodic
);
4945 cancel_delayed_work(&priv
->init_alive_start
);
4949 static struct iwl_hcmd_ops iwl4965_hcmd
= {
4950 .rxon_assoc
= iwl4965_send_rxon_assoc
,
4953 static struct iwl_hcmd_utils_ops iwl4965_hcmd_utils
= {
4954 .enqueue_hcmd
= iwl4965_enqueue_hcmd
,
4957 static struct iwl_lib_ops iwl4965_lib
= {
4958 .init_drv
= iwl4965_init_drv
,
4959 .set_hw_params
= iwl4965_hw_set_hw_params
,
4960 .txq_update_byte_cnt_tbl
= iwl4965_txq_update_byte_cnt_tbl
,
4961 .hw_nic_init
= iwl4965_hw_nic_init
,
4962 .is_valid_rtc_data_addr
= iwl4965_hw_valid_rtc_data_addr
,
4963 .alive_notify
= iwl4965_alive_notify
,
4964 .load_ucode
= iwl4965_load_bsm
,
4966 .verify_signature
= iwlcore_eeprom_verify_signature
,
4967 .acquire_semaphore
= iwlcore_eeprom_acquire_semaphore
,
4968 .release_semaphore
= iwlcore_eeprom_release_semaphore
,
4970 .radio_kill_sw
= iwl4965_radio_kill_sw
,
4973 static struct iwl_ops iwl4965_ops
= {
4974 .lib
= &iwl4965_lib
,
4975 .hcmd
= &iwl4965_hcmd
,
4976 .utils
= &iwl4965_hcmd_utils
,
4979 struct iwl_cfg iwl4965_agn_cfg
= {
4981 .fw_name
= "iwlwifi-4965" IWL4965_UCODE_API
".ucode",
4982 .sku
= IWL_SKU_A
|IWL_SKU_G
|IWL_SKU_N
,
4983 .ops
= &iwl4965_ops
,
4984 .mod_params
= &iwl4965_mod_params
,
4987 module_param_named(antenna
, iwl4965_mod_params
.antenna
, int, 0444);
4988 MODULE_PARM_DESC(antenna
, "select antenna (1=Main, 2=Aux, default 0 [both])");
4989 module_param_named(disable
, iwl4965_mod_params
.disable
, int, 0444);
4990 MODULE_PARM_DESC(disable
, "manually disable the radio (default 0 [radio on])");
4991 module_param_named(swcrypto
, iwl4965_mod_params
.sw_crypto
, int, 0444);
4992 MODULE_PARM_DESC(swcrypto
, "using crypto in software (default 0 [hardware])\n");
4993 module_param_named(debug
, iwl4965_mod_params
.debug
, int, 0444);
4994 MODULE_PARM_DESC(debug
, "debug output mask");
4996 disable_hw_scan
, iwl4965_mod_params
.disable_hw_scan
, int, 0444);
4997 MODULE_PARM_DESC(disable_hw_scan
, "disable hardware scanning (default 0)");
4999 module_param_named(queues_num
, iwl4965_mod_params
.num_of_queues
, int, 0444);
5000 MODULE_PARM_DESC(queues_num
, "number of hw queues.");
5003 module_param_named(qos_enable
, iwl4965_mod_params
.enable_qos
, int, 0444);
5004 MODULE_PARM_DESC(qos_enable
, "enable all QoS functionality");
5005 module_param_named(amsdu_size_8K
, iwl4965_mod_params
.amsdu_size_8K
, int, 0444);
5006 MODULE_PARM_DESC(amsdu_size_8K
, "enable 8K amsdu size");