1 /******************************************************************************
3 * Copyright(c) 2003 - 2011 Intel Corporation. All rights reserved.
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of version 2 of the GNU General Public License as
7 * published by the Free Software Foundation.
9 * This program is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
14 * You should have received a copy of the GNU General Public License along with
15 * this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
18 * The full GNU General Public License is included in this distribution in the
19 * file called LICENSE.
21 * Contact Information:
22 * Intel Linux Wireless <ilw@linux.intel.com>
23 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
25 *****************************************************************************/
27 #include <linux/kernel.h>
28 #include <linux/module.h>
29 #include <linux/init.h>
30 #include <linux/pci.h>
31 #include <linux/dma-mapping.h>
32 #include <linux/delay.h>
33 #include <linux/sched.h>
34 #include <linux/skbuff.h>
35 #include <linux/netdevice.h>
36 #include <net/mac80211.h>
37 #include <linux/etherdevice.h>
38 #include <asm/unaligned.h>
44 * il_verify_inst_sparse - verify runtime uCode image in card vs. host,
45 * using sample data 100 bytes apart. If these sample points are good,
46 * it's a pretty good bet that everything between them is good, too.
49 il4965_verify_inst_sparse(struct il_priv *il, __le32 * image, u32 len)
56 D_INFO("ucode inst image size is %u\n", len);
58 for (i = 0; i < len; i += 100, image += 100 / sizeof(u32)) {
59 /* read data comes through single port, auto-incr addr */
60 /* NOTE: Use the debugless read so we don't flood kernel log
61 * if IL_DL_IO is set */
62 il_wr(il, HBUS_TARG_MEM_RADDR, i + IL4965_RTC_INST_LOWER_BOUND);
63 val = _il_rd(il, HBUS_TARG_MEM_RDAT);
64 if (val != le32_to_cpu(*image)) {
76 * il4965_verify_inst_full - verify runtime uCode image in card vs. host,
77 * looking at all data.
80 il4965_verify_inst_full(struct il_priv *il, __le32 * image, u32 len)
87 D_INFO("ucode inst image size is %u\n", len);
89 il_wr(il, HBUS_TARG_MEM_RADDR, IL4965_RTC_INST_LOWER_BOUND);
92 for (; len > 0; len -= sizeof(u32), image++) {
93 /* read data comes through single port, auto-incr addr */
94 /* NOTE: Use the debugless read so we don't flood kernel log
95 * if IL_DL_IO is set */
96 val = _il_rd(il, HBUS_TARG_MEM_RDAT);
97 if (val != le32_to_cpu(*image)) {
98 IL_ERR("uCode INST section is invalid at "
99 "offset 0x%x, is 0x%x, s/b 0x%x\n",
100 save_len - len, val, le32_to_cpu(*image));
109 D_INFO("ucode image in INSTRUCTION memory is good\n");
115 * il4965_verify_ucode - determine which instruction image is in SRAM,
116 * and verify its contents
119 il4965_verify_ucode(struct il_priv *il)
126 image = (__le32 *) il->ucode_boot.v_addr;
127 len = il->ucode_boot.len;
128 ret = il4965_verify_inst_sparse(il, image, len);
130 D_INFO("Bootstrap uCode is good in inst SRAM\n");
135 image = (__le32 *) il->ucode_init.v_addr;
136 len = il->ucode_init.len;
137 ret = il4965_verify_inst_sparse(il, image, len);
139 D_INFO("Initialize uCode is good in inst SRAM\n");
143 /* Try runtime/protocol */
144 image = (__le32 *) il->ucode_code.v_addr;
145 len = il->ucode_code.len;
146 ret = il4965_verify_inst_sparse(il, image, len);
148 D_INFO("Runtime uCode is good in inst SRAM\n");
152 IL_ERR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
154 /* Since nothing seems to match, show first several data entries in
155 * instruction SRAM, so maybe visual inspection will give a clue.
156 * Selection of bootstrap image (vs. other images) is arbitrary. */
157 image = (__le32 *) il->ucode_boot.v_addr;
158 len = il->ucode_boot.len;
159 ret = il4965_verify_inst_full(il, image, len);
164 /******************************************************************************
166 * EEPROM related functions
168 ******************************************************************************/
171 * The device's EEPROM semaphore prevents conflicts between driver and uCode
172 * when accessing the EEPROM; each access is a series of pulses to/from the
173 * EEPROM chip, not a single event, so even reads could conflict if they
174 * weren't arbitrated by the semaphore.
177 il4965_eeprom_acquire_semaphore(struct il_priv *il)
182 for (count = 0; count < EEPROM_SEM_RETRY_LIMIT; count++) {
183 /* Request semaphore */
184 il_set_bit(il, CSR_HW_IF_CONFIG_REG,
185 CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM);
187 /* See if we got it */
189 _il_poll_bit(il, CSR_HW_IF_CONFIG_REG,
190 CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM,
191 CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM,
201 il4965_eeprom_release_semaphore(struct il_priv *il)
203 il_clear_bit(il, CSR_HW_IF_CONFIG_REG,
204 CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM);
209 il4965_eeprom_check_version(struct il_priv *il)
214 eeprom_ver = il_eeprom_query16(il, EEPROM_VERSION);
215 calib_ver = il_eeprom_query16(il, EEPROM_4965_CALIB_VERSION_OFFSET);
217 if (eeprom_ver < il->cfg->eeprom_ver ||
218 calib_ver < il->cfg->eeprom_calib_ver)
221 IL_INFO("device EEPROM VER=0x%x, CALIB=0x%x\n", eeprom_ver, calib_ver);
225 IL_ERR("Unsupported (too old) EEPROM VER=0x%x < 0x%x "
226 "CALIB=0x%x < 0x%x\n", eeprom_ver, il->cfg->eeprom_ver,
227 calib_ver, il->cfg->eeprom_calib_ver);
233 il4965_eeprom_get_mac(const struct il_priv *il, u8 * mac)
235 const u8 *addr = il_eeprom_query_addr(il,
237 memcpy(mac, addr, ETH_ALEN);
240 /* Send led command */
242 il4965_send_led_cmd(struct il_priv *il, struct il_led_cmd *led_cmd)
244 struct il_host_cmd cmd = {
246 .len = sizeof(struct il_led_cmd),
253 reg = _il_rd(il, CSR_LED_REG);
254 if (reg != (reg & CSR_LED_BSM_CTRL_MSK))
255 _il_wr(il, CSR_LED_REG, reg & CSR_LED_BSM_CTRL_MSK);
257 return il_send_cmd(il, &cmd);
260 /* Set led register off */
262 il4965_led_enable(struct il_priv *il)
264 _il_wr(il, CSR_LED_REG, CSR_LED_REG_TRUN_ON);
267 const struct il_led_ops il4965_led_ops = {
268 .cmd = il4965_send_led_cmd,
271 static int il4965_send_tx_power(struct il_priv *il);
272 static int il4965_hw_get_temperature(struct il_priv *il);
274 /* Highest firmware API version supported */
275 #define IL4965_UCODE_API_MAX 2
277 /* Lowest firmware API version supported */
278 #define IL4965_UCODE_API_MIN 2
280 #define IL4965_FW_PRE "iwlwifi-4965-"
281 #define _IL4965_MODULE_FIRMWARE(api) IL4965_FW_PRE #api ".ucode"
282 #define IL4965_MODULE_FIRMWARE(api) _IL4965_MODULE_FIRMWARE(api)
284 /* check contents of special bootstrap uCode SRAM */
286 il4965_verify_bsm(struct il_priv *il)
288 __le32 *image = il->ucode_boot.v_addr;
289 u32 len = il->ucode_boot.len;
293 D_INFO("Begin verify bsm\n");
295 /* verify BSM SRAM contents */
296 val = il_rd_prph(il, BSM_WR_DWCOUNT_REG);
297 for (reg = BSM_SRAM_LOWER_BOUND; reg < BSM_SRAM_LOWER_BOUND + len;
298 reg += sizeof(u32), image++) {
299 val = il_rd_prph(il, reg);
300 if (val != le32_to_cpu(*image)) {
301 IL_ERR("BSM uCode verification failed at "
302 "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
303 BSM_SRAM_LOWER_BOUND, reg - BSM_SRAM_LOWER_BOUND,
304 len, val, le32_to_cpu(*image));
309 D_INFO("BSM bootstrap uCode image OK\n");
315 * il4965_load_bsm - Load bootstrap instructions
319 * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
320 * in special SRAM that does not power down during RFKILL. When powering back
321 * up after power-saving sleeps (or during initial uCode load), the BSM loads
322 * the bootstrap program into the on-board processor, and starts it.
324 * The bootstrap program loads (via DMA) instructions and data for a new
325 * program from host DRAM locations indicated by the host driver in the
326 * BSM_DRAM_* registers. Once the new program is loaded, it starts
329 * When initializing the NIC, the host driver points the BSM to the
330 * "initialize" uCode image. This uCode sets up some internal data, then
331 * notifies host via "initialize alive" that it is complete.
333 * The host then replaces the BSM_DRAM_* pointer values to point to the
334 * normal runtime uCode instructions and a backup uCode data cache buffer
335 * (filled initially with starting data values for the on-board processor),
336 * then triggers the "initialize" uCode to load and launch the runtime uCode,
337 * which begins normal operation.
339 * When doing a power-save shutdown, runtime uCode saves data SRAM into
340 * the backup data cache in DRAM before SRAM is powered down.
342 * When powering back up, the BSM loads the bootstrap program. This reloads
343 * the runtime uCode instructions and the backup data cache into SRAM,
344 * and re-launches the runtime uCode from where it left off.
347 il4965_load_bsm(struct il_priv *il)
349 __le32 *image = il->ucode_boot.v_addr;
350 u32 len = il->ucode_boot.len;
360 D_INFO("Begin load bsm\n");
362 il->ucode_type = UCODE_RT;
364 /* make sure bootstrap program is no larger than BSM's SRAM size */
365 if (len > IL49_MAX_BSM_SIZE)
368 /* Tell bootstrap uCode where to find the "Initialize" uCode
369 * in host DRAM ... host DRAM physical address bits 35:4 for 4965.
370 * NOTE: il_init_alive_start() will replace these values,
371 * after the "initialize" uCode has run, to point to
372 * runtime/protocol instructions and backup data cache.
374 pinst = il->ucode_init.p_addr >> 4;
375 pdata = il->ucode_init_data.p_addr >> 4;
376 inst_len = il->ucode_init.len;
377 data_len = il->ucode_init_data.len;
379 il_wr_prph(il, BSM_DRAM_INST_PTR_REG, pinst);
380 il_wr_prph(il, BSM_DRAM_DATA_PTR_REG, pdata);
381 il_wr_prph(il, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
382 il_wr_prph(il, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
384 /* Fill BSM memory with bootstrap instructions */
385 for (reg_offset = BSM_SRAM_LOWER_BOUND;
386 reg_offset < BSM_SRAM_LOWER_BOUND + len;
387 reg_offset += sizeof(u32), image++)
388 _il_wr_prph(il, reg_offset, le32_to_cpu(*image));
390 ret = il4965_verify_bsm(il);
394 /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
395 il_wr_prph(il, BSM_WR_MEM_SRC_REG, 0x0);
396 il_wr_prph(il, BSM_WR_MEM_DST_REG, IL49_RTC_INST_LOWER_BOUND);
397 il_wr_prph(il, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
399 /* Load bootstrap code into instruction SRAM now,
400 * to prepare to load "initialize" uCode */
401 il_wr_prph(il, BSM_WR_CTRL_REG, BSM_WR_CTRL_REG_BIT_START);
403 /* Wait for load of bootstrap uCode to finish */
404 for (i = 0; i < 100; i++) {
405 done = il_rd_prph(il, BSM_WR_CTRL_REG);
406 if (!(done & BSM_WR_CTRL_REG_BIT_START))
411 D_INFO("BSM write complete, poll %d iterations\n", i);
413 IL_ERR("BSM write did not complete!\n");
417 /* Enable future boot loads whenever power management unit triggers it
418 * (e.g. when powering back up after power-save shutdown) */
419 il_wr_prph(il, BSM_WR_CTRL_REG, BSM_WR_CTRL_REG_BIT_START_EN);
425 * il4965_set_ucode_ptrs - Set uCode address location
427 * Tell initialization uCode where to find runtime uCode.
429 * BSM registers initially contain pointers to initialization uCode.
430 * We need to replace them to load runtime uCode inst and data,
431 * and to save runtime data when powering down.
434 il4965_set_ucode_ptrs(struct il_priv *il)
440 /* bits 35:4 for 4965 */
441 pinst = il->ucode_code.p_addr >> 4;
442 pdata = il->ucode_data_backup.p_addr >> 4;
444 /* Tell bootstrap uCode where to find image to load */
445 il_wr_prph(il, BSM_DRAM_INST_PTR_REG, pinst);
446 il_wr_prph(il, BSM_DRAM_DATA_PTR_REG, pdata);
447 il_wr_prph(il, BSM_DRAM_DATA_BYTECOUNT_REG, il->ucode_data.len);
449 /* Inst byte count must be last to set up, bit 31 signals uCode
450 * that all new ptr/size info is in place */
451 il_wr_prph(il, BSM_DRAM_INST_BYTECOUNT_REG,
452 il->ucode_code.len | BSM_DRAM_INST_LOAD);
453 D_INFO("Runtime uCode pointers are set.\n");
459 * il4965_init_alive_start - Called after N_ALIVE notification received
461 * Called after N_ALIVE notification received from "initialize" uCode.
463 * The 4965 "initialize" ALIVE reply contains calibration data for:
464 * Voltage, temperature, and MIMO tx gain correction, now stored in il
465 * (3945 does not contain this data).
467 * Tell "initialize" uCode to go ahead and load the runtime uCode.
470 il4965_init_alive_start(struct il_priv *il)
472 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
473 * This is a paranoid check, because we would not have gotten the
474 * "initialize" alive if code weren't properly loaded. */
475 if (il4965_verify_ucode(il)) {
476 /* Runtime instruction load was bad;
477 * take it all the way back down so we can try again */
478 D_INFO("Bad \"initialize\" uCode load.\n");
482 /* Calculate temperature */
483 il->temperature = il4965_hw_get_temperature(il);
485 /* Send pointers to protocol/runtime uCode image ... init code will
486 * load and launch runtime uCode, which will send us another "Alive"
488 D_INFO("Initialization Alive received.\n");
489 if (il4965_set_ucode_ptrs(il)) {
490 /* Runtime instruction load won't happen;
491 * take it all the way back down so we can try again */
492 D_INFO("Couldn't set up uCode pointers.\n");
498 queue_work(il->workqueue, &il->restart);
502 iw4965_is_ht40_channel(__le32 rxon_flags)
505 le32_to_cpu(rxon_flags & RXON_FLG_CHANNEL_MODE_MSK) >>
506 RXON_FLG_CHANNEL_MODE_POS;
507 return (chan_mod == CHANNEL_MODE_PURE_40 ||
508 chan_mod == CHANNEL_MODE_MIXED);
512 il4965_nic_config(struct il_priv *il)
517 spin_lock_irqsave(&il->lock, flags);
519 radio_cfg = il_eeprom_query16(il, EEPROM_RADIO_CONFIG);
521 /* write radio config values to register */
522 if (EEPROM_RF_CFG_TYPE_MSK(radio_cfg) == EEPROM_4965_RF_CFG_TYPE_MAX)
523 il_set_bit(il, CSR_HW_IF_CONFIG_REG,
524 EEPROM_RF_CFG_TYPE_MSK(radio_cfg) |
525 EEPROM_RF_CFG_STEP_MSK(radio_cfg) |
526 EEPROM_RF_CFG_DASH_MSK(radio_cfg));
528 /* set CSR_HW_CONFIG_REG for uCode use */
529 il_set_bit(il, CSR_HW_IF_CONFIG_REG,
530 CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
531 CSR_HW_IF_CONFIG_REG_BIT_MAC_SI);
534 (struct il_eeprom_calib_info *)
535 il_eeprom_query_addr(il, EEPROM_4965_CALIB_TXPOWER_OFFSET);
537 spin_unlock_irqrestore(&il->lock, flags);
540 /* Reset differential Rx gains in NIC to prepare for chain noise calibration.
541 * Called after every association, but this runs only once!
542 * ... once chain noise is calibrated the first time, it's good forever. */
544 il4965_chain_noise_reset(struct il_priv *il)
546 struct il_chain_noise_data *data = &(il->chain_noise_data);
548 if (data->state == IL_CHAIN_NOISE_ALIVE && il_is_any_associated(il)) {
549 struct il_calib_diff_gain_cmd cmd;
551 /* clear data for chain noise calibration algorithm */
552 data->chain_noise_a = 0;
553 data->chain_noise_b = 0;
554 data->chain_noise_c = 0;
555 data->chain_signal_a = 0;
556 data->chain_signal_b = 0;
557 data->chain_signal_c = 0;
558 data->beacon_count = 0;
560 memset(&cmd, 0, sizeof(cmd));
561 cmd.hdr.op_code = IL_PHY_CALIBRATE_DIFF_GAIN_CMD;
565 if (il_send_cmd_pdu(il, C_PHY_CALIBRATION, sizeof(cmd), &cmd))
566 IL_ERR("Could not send C_PHY_CALIBRATION\n");
567 data->state = IL_CHAIN_NOISE_ACCUMULATE;
568 D_CALIB("Run chain_noise_calibrate\n");
573 il4965_math_div_round(s32 num, s32 denom, s32 * res)
586 *res = ((num * 2 + denom) / (denom * 2)) * sign;
592 * il4965_get_voltage_compensation - Power supply voltage comp for txpower
594 * Determines power supply voltage compensation for txpower calculations.
595 * Returns number of 1/2-dB steps to subtract from gain table idx,
596 * to compensate for difference between power supply voltage during
597 * factory measurements, vs. current power supply voltage.
599 * Voltage indication is higher for lower voltage.
600 * Lower voltage requires more gain (lower gain table idx).
603 il4965_get_voltage_compensation(s32 eeprom_voltage, s32 current_voltage)
607 if (TX_POWER_IL_ILLEGAL_VOLTAGE == eeprom_voltage ||
608 TX_POWER_IL_ILLEGAL_VOLTAGE == current_voltage)
611 il4965_math_div_round(current_voltage - eeprom_voltage,
612 TX_POWER_IL_VOLTAGE_CODES_PER_03V, &comp);
614 if (current_voltage > eeprom_voltage)
616 if ((comp < -2) || (comp > 2))
623 il4965_get_tx_atten_grp(u16 channel)
625 if (channel >= CALIB_IL_TX_ATTEN_GR5_FCH &&
626 channel <= CALIB_IL_TX_ATTEN_GR5_LCH)
627 return CALIB_CH_GROUP_5;
629 if (channel >= CALIB_IL_TX_ATTEN_GR1_FCH &&
630 channel <= CALIB_IL_TX_ATTEN_GR1_LCH)
631 return CALIB_CH_GROUP_1;
633 if (channel >= CALIB_IL_TX_ATTEN_GR2_FCH &&
634 channel <= CALIB_IL_TX_ATTEN_GR2_LCH)
635 return CALIB_CH_GROUP_2;
637 if (channel >= CALIB_IL_TX_ATTEN_GR3_FCH &&
638 channel <= CALIB_IL_TX_ATTEN_GR3_LCH)
639 return CALIB_CH_GROUP_3;
641 if (channel >= CALIB_IL_TX_ATTEN_GR4_FCH &&
642 channel <= CALIB_IL_TX_ATTEN_GR4_LCH)
643 return CALIB_CH_GROUP_4;
649 il4965_get_sub_band(const struct il_priv *il, u32 channel)
653 for (b = 0; b < EEPROM_TX_POWER_BANDS; b++) {
654 if (il->calib_info->band_info[b].ch_from == 0)
657 if (channel >= il->calib_info->band_info[b].ch_from &&
658 channel <= il->calib_info->band_info[b].ch_to)
666 il4965_interpolate_value(s32 x, s32 x1, s32 y1, s32 x2, s32 y2)
673 il4965_math_div_round((x2 - x) * (y1 - y2), (x2 - x1), &val);
679 * il4965_interpolate_chan - Interpolate factory measurements for one channel
681 * Interpolates factory measurements from the two sample channels within a
682 * sub-band, to apply to channel of interest. Interpolation is proportional to
683 * differences in channel frequencies, which is proportional to differences
687 il4965_interpolate_chan(struct il_priv *il, u32 channel,
688 struct il_eeprom_calib_ch_info *chan_info)
693 const struct il_eeprom_calib_measure *m1;
694 const struct il_eeprom_calib_measure *m2;
695 struct il_eeprom_calib_measure *omeas;
699 s = il4965_get_sub_band(il, channel);
700 if (s >= EEPROM_TX_POWER_BANDS) {
701 IL_ERR("Tx Power can not find channel %d\n", channel);
705 ch_i1 = il->calib_info->band_info[s].ch1.ch_num;
706 ch_i2 = il->calib_info->band_info[s].ch2.ch_num;
707 chan_info->ch_num = (u8) channel;
709 D_TXPOWER("channel %d subband %d factory cal ch %d & %d\n", channel, s,
712 for (c = 0; c < EEPROM_TX_POWER_TX_CHAINS; c++) {
713 for (m = 0; m < EEPROM_TX_POWER_MEASUREMENTS; m++) {
714 m1 = &(il->calib_info->band_info[s].ch1.
716 m2 = &(il->calib_info->band_info[s].ch2.
718 omeas = &(chan_info->measurements[c][m]);
721 (u8) il4965_interpolate_value(channel, ch_i1,
722 m1->actual_pow, ch_i2,
725 (u8) il4965_interpolate_value(channel, ch_i1,
729 (u8) il4965_interpolate_value(channel, ch_i1,
734 (s8) il4965_interpolate_value(channel, ch_i1,
738 D_TXPOWER("chain %d meas %d AP1=%d AP2=%d AP=%d\n", c,
739 m, m1->actual_pow, m2->actual_pow,
741 D_TXPOWER("chain %d meas %d NI1=%d NI2=%d NI=%d\n", c,
742 m, m1->gain_idx, m2->gain_idx,
744 D_TXPOWER("chain %d meas %d PA1=%d PA2=%d PA=%d\n", c,
745 m, m1->pa_det, m2->pa_det, omeas->pa_det);
746 D_TXPOWER("chain %d meas %d T1=%d T2=%d T=%d\n", c,
747 m, m1->temperature, m2->temperature,
755 /* bit-rate-dependent table to prevent Tx distortion, in half-dB units,
756 * for OFDM 6, 12, 18, 24, 36, 48, 54, 60 MBit, and CCK all rates. */
757 static s32 back_off_table[] = {
758 10, 10, 10, 10, 10, 15, 17, 20, /* OFDM SISO 20 MHz */
759 10, 10, 10, 10, 10, 15, 17, 20, /* OFDM MIMO 20 MHz */
760 10, 10, 10, 10, 10, 15, 17, 20, /* OFDM SISO 40 MHz */
761 10, 10, 10, 10, 10, 15, 17, 20, /* OFDM MIMO 40 MHz */
765 /* Thermal compensation values for txpower for various frequency ranges ...
766 * ratios from 3:1 to 4.5:1 of degrees (Celsius) per half-dB gain adjust */
767 static struct il4965_txpower_comp_entry {
768 s32 degrees_per_05db_a;
769 s32 degrees_per_05db_a_denom;
770 } tx_power_cmp_tble[CALIB_CH_GROUP_MAX] = {
772 9, 2}, /* group 0 5.2, ch 34-43 */
774 4, 1}, /* group 1 5.2, ch 44-70 */
776 4, 1}, /* group 2 5.2, ch 71-124 */
778 4, 1}, /* group 3 5.2, ch 125-200 */
780 3, 1} /* group 4 2.4, ch all */
784 get_min_power_idx(s32 rate_power_idx, u32 band)
787 if ((rate_power_idx & 7) <= 4)
788 return MIN_TX_GAIN_IDX_52GHZ_EXT;
790 return MIN_TX_GAIN_IDX;
798 static const struct gain_entry gain_table[2][108] = {
799 /* 5.2GHz power gain idx table */
801 {123, 0x3F}, /* highest txpower */
910 /* 2.4GHz power gain idx table */
912 {110, 0x3f}, /* highest txpower */
1024 il4965_fill_txpower_tbl(struct il_priv *il, u8 band, u16 channel, u8 is_ht40,
1026 struct il4965_tx_power_db *tx_power_tbl)
1028 u8 saturation_power;
1030 s32 user_target_power;
1034 s32 current_regulatory;
1035 s32 txatten_grp = CALIB_CH_GROUP_MAX;
1038 const struct il_channel_info *ch_info = NULL;
1039 struct il_eeprom_calib_ch_info ch_eeprom_info;
1040 const struct il_eeprom_calib_measure *measurement;
1043 s32 voltage_compensation;
1044 s32 degrees_per_05db_num;
1045 s32 degrees_per_05db_denom;
1047 s32 temperature_comp[2];
1048 s32 factory_gain_idx[2];
1049 s32 factory_actual_pwr[2];
1052 /* tx_power_user_lmt is in dBm, convert to half-dBm (half-dB units
1053 * are used for idxing into txpower table) */
1054 user_target_power = 2 * il->tx_power_user_lmt;
1056 /* Get current (RXON) channel, band, width */
1057 D_TXPOWER("chan %d band %d is_ht40 %d\n", channel, band, is_ht40);
1059 ch_info = il_get_channel_info(il, il->band, channel);
1061 if (!il_is_channel_valid(ch_info))
1064 /* get txatten group, used to select 1) thermal txpower adjustment
1065 * and 2) mimo txpower balance between Tx chains. */
1066 txatten_grp = il4965_get_tx_atten_grp(channel);
1067 if (txatten_grp < 0) {
1068 IL_ERR("Can't find txatten group for channel %d.\n", channel);
1072 D_TXPOWER("channel %d belongs to txatten group %d\n", channel,
1082 /* hardware txpower limits ...
1083 * saturation (clipping distortion) txpowers are in half-dBm */
1085 saturation_power = il->calib_info->saturation_power24;
1087 saturation_power = il->calib_info->saturation_power52;
1089 if (saturation_power < IL_TX_POWER_SATURATION_MIN ||
1090 saturation_power > IL_TX_POWER_SATURATION_MAX) {
1092 saturation_power = IL_TX_POWER_DEFAULT_SATURATION_24;
1094 saturation_power = IL_TX_POWER_DEFAULT_SATURATION_52;
1097 /* regulatory txpower limits ... reg_limit values are in half-dBm,
1098 * max_power_avg values are in dBm, convert * 2 */
1100 reg_limit = ch_info->ht40_max_power_avg * 2;
1102 reg_limit = ch_info->max_power_avg * 2;
1104 if ((reg_limit < IL_TX_POWER_REGULATORY_MIN) ||
1105 (reg_limit > IL_TX_POWER_REGULATORY_MAX)) {
1107 reg_limit = IL_TX_POWER_DEFAULT_REGULATORY_24;
1109 reg_limit = IL_TX_POWER_DEFAULT_REGULATORY_52;
1112 /* Interpolate txpower calibration values for this channel,
1113 * based on factory calibration tests on spaced channels. */
1114 il4965_interpolate_chan(il, channel, &ch_eeprom_info);
1116 /* calculate tx gain adjustment based on power supply voltage */
1117 voltage = le16_to_cpu(il->calib_info->voltage);
1118 init_voltage = (s32) le32_to_cpu(il->card_alive_init.voltage);
1119 voltage_compensation =
1120 il4965_get_voltage_compensation(voltage, init_voltage);
1122 D_TXPOWER("curr volt %d eeprom volt %d volt comp %d\n", init_voltage,
1123 voltage, voltage_compensation);
1125 /* get current temperature (Celsius) */
1126 current_temp = max(il->temperature, IL_TX_POWER_TEMPERATURE_MIN);
1127 current_temp = min(il->temperature, IL_TX_POWER_TEMPERATURE_MAX);
1128 current_temp = KELVIN_TO_CELSIUS(current_temp);
1130 /* select thermal txpower adjustment params, based on channel group
1131 * (same frequency group used for mimo txatten adjustment) */
1132 degrees_per_05db_num =
1133 tx_power_cmp_tble[txatten_grp].degrees_per_05db_a;
1134 degrees_per_05db_denom =
1135 tx_power_cmp_tble[txatten_grp].degrees_per_05db_a_denom;
1137 /* get per-chain txpower values from factory measurements */
1138 for (c = 0; c < 2; c++) {
1139 measurement = &ch_eeprom_info.measurements[c][1];
1141 /* txgain adjustment (in half-dB steps) based on difference
1142 * between factory and current temperature */
1143 factory_temp = measurement->temperature;
1144 il4965_math_div_round((current_temp -
1145 factory_temp) * degrees_per_05db_denom,
1146 degrees_per_05db_num,
1147 &temperature_comp[c]);
1149 factory_gain_idx[c] = measurement->gain_idx;
1150 factory_actual_pwr[c] = measurement->actual_pow;
1152 D_TXPOWER("chain = %d\n", c);
1153 D_TXPOWER("fctry tmp %d, " "curr tmp %d, comp %d steps\n",
1154 factory_temp, current_temp, temperature_comp[c]);
1156 D_TXPOWER("fctry idx %d, fctry pwr %d\n", factory_gain_idx[c],
1157 factory_actual_pwr[c]);
1160 /* for each of 33 bit-rates (including 1 for CCK) */
1161 for (i = 0; i < POWER_TBL_NUM_ENTRIES; i++) {
1163 union il4965_tx_power_dual_stream tx_power;
1165 /* for mimo, reduce each chain's txpower by half
1166 * (3dB, 6 steps), so total output power is regulatory
1169 current_regulatory =
1171 IL_TX_POWER_MIMO_REGULATORY_COMPENSATION;
1174 current_regulatory = reg_limit;
1178 /* find txpower limit, either hardware or regulatory */
1179 power_limit = saturation_power - back_off_table[i];
1180 if (power_limit > current_regulatory)
1181 power_limit = current_regulatory;
1183 /* reduce user's txpower request if necessary
1184 * for this rate on this channel */
1185 target_power = user_target_power;
1186 if (target_power > power_limit)
1187 target_power = power_limit;
1189 D_TXPOWER("rate %d sat %d reg %d usr %d tgt %d\n", i,
1190 saturation_power - back_off_table[i],
1191 current_regulatory, user_target_power, target_power);
1193 /* for each of 2 Tx chains (radio transmitters) */
1194 for (c = 0; c < 2; c++) {
1199 (s32) le32_to_cpu(il->card_alive_init.
1200 tx_atten[txatten_grp][c]);
1204 /* calculate idx; higher idx means lower txpower */
1206 (u8) (factory_gain_idx[c] -
1207 (target_power - factory_actual_pwr[c]) -
1208 temperature_comp[c] - voltage_compensation +
1211 /* D_TXPOWER("calculated txpower idx %d\n",
1214 if (power_idx < get_min_power_idx(i, band))
1215 power_idx = get_min_power_idx(i, band);
1217 /* adjust 5 GHz idx to support negative idxes */
1221 /* CCK, rate 32, reduce txpower for CCK */
1222 if (i == POWER_TBL_CCK_ENTRY)
1224 IL_TX_POWER_CCK_COMPENSATION_C_STEP;
1226 /* stay within the table! */
1227 if (power_idx > 107) {
1228 IL_WARN("txpower idx %d > 107\n", power_idx);
1231 if (power_idx < 0) {
1232 IL_WARN("txpower idx %d < 0\n", power_idx);
1236 /* fill txpower command for this rate/chain */
1237 tx_power.s.radio_tx_gain[c] =
1238 gain_table[band][power_idx].radio;
1239 tx_power.s.dsp_predis_atten[c] =
1240 gain_table[band][power_idx].dsp;
1242 D_TXPOWER("chain %d mimo %d idx %d "
1243 "gain 0x%02x dsp %d\n", c, atten_value,
1244 power_idx, tx_power.s.radio_tx_gain[c],
1245 tx_power.s.dsp_predis_atten[c]);
1246 } /* for each chain */
1248 tx_power_tbl->power_tbl[i].dw = cpu_to_le32(tx_power.dw);
1250 } /* for each rate */
1256 * il4965_send_tx_power - Configure the TXPOWER level user limit
1258 * Uses the active RXON for channel, band, and characteristics (ht40, high)
1259 * The power limit is taken from il->tx_power_user_lmt.
1262 il4965_send_tx_power(struct il_priv *il)
1264 struct il4965_txpowertable_cmd cmd = { 0 };
1267 bool is_ht40 = false;
1268 u8 ctrl_chan_high = 0;
1271 (test_bit(S_SCAN_HW, &il->status),
1272 "TX Power requested while scanning!\n"))
1275 band = il->band == IEEE80211_BAND_2GHZ;
1277 is_ht40 = iw4965_is_ht40_channel(il->active.flags);
1279 if (is_ht40 && (il->active.flags & RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK))
1283 cmd.channel = il->active.channel;
1286 il4965_fill_txpower_tbl(il, band, le16_to_cpu(il->active.channel),
1287 is_ht40, ctrl_chan_high, &cmd.tx_power);
1291 ret = il_send_cmd_pdu(il, C_TX_PWR_TBL, sizeof(cmd), &cmd);
1298 il4965_send_rxon_assoc(struct il_priv *il)
1301 struct il4965_rxon_assoc_cmd rxon_assoc;
1302 const struct il_rxon_cmd *rxon1 = &il->staging;
1303 const struct il_rxon_cmd *rxon2 = &il->active;
1305 if (rxon1->flags == rxon2->flags &&
1306 rxon1->filter_flags == rxon2->filter_flags &&
1307 rxon1->cck_basic_rates == rxon2->cck_basic_rates &&
1308 rxon1->ofdm_ht_single_stream_basic_rates ==
1309 rxon2->ofdm_ht_single_stream_basic_rates &&
1310 rxon1->ofdm_ht_dual_stream_basic_rates ==
1311 rxon2->ofdm_ht_dual_stream_basic_rates &&
1312 rxon1->rx_chain == rxon2->rx_chain &&
1313 rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates) {
1314 D_INFO("Using current RXON_ASSOC. Not resending.\n");
1318 rxon_assoc.flags = il->staging.flags;
1319 rxon_assoc.filter_flags = il->staging.filter_flags;
1320 rxon_assoc.ofdm_basic_rates = il->staging.ofdm_basic_rates;
1321 rxon_assoc.cck_basic_rates = il->staging.cck_basic_rates;
1322 rxon_assoc.reserved = 0;
1323 rxon_assoc.ofdm_ht_single_stream_basic_rates =
1324 il->staging.ofdm_ht_single_stream_basic_rates;
1325 rxon_assoc.ofdm_ht_dual_stream_basic_rates =
1326 il->staging.ofdm_ht_dual_stream_basic_rates;
1327 rxon_assoc.rx_chain_select_flags = il->staging.rx_chain;
1330 il_send_cmd_pdu_async(il, C_RXON_ASSOC, sizeof(rxon_assoc),
1337 il4965_commit_rxon(struct il_priv *il)
1339 /* cast away the const for active_rxon in this function */
1340 struct il_rxon_cmd *active_rxon = (void *)&il->active;
1342 bool new_assoc = !!(il->staging.filter_flags & RXON_FILTER_ASSOC_MSK);
1344 if (!il_is_alive(il))
1347 /* always get timestamp with Rx frame */
1348 il->staging.flags |= RXON_FLG_TSF2HOST_MSK;
1350 ret = il_check_rxon_cmd(il);
1352 IL_ERR("Invalid RXON configuration. Not committing.\n");
1357 * receive commit_rxon request
1358 * abort any previous channel switch if still in process
1360 if (test_bit(S_CHANNEL_SWITCH_PENDING, &il->status) &&
1361 il->switch_channel != il->staging.channel) {
1362 D_11H("abort channel switch on %d\n",
1363 le16_to_cpu(il->switch_channel));
1364 il_chswitch_done(il, false);
1367 /* If we don't need to send a full RXON, we can use
1368 * il_rxon_assoc_cmd which is used to reconfigure filter
1369 * and other flags for the current radio configuration. */
1370 if (!il_full_rxon_required(il)) {
1371 ret = il_send_rxon_assoc(il);
1373 IL_ERR("Error setting RXON_ASSOC (%d)\n", ret);
1377 memcpy(active_rxon, &il->staging, sizeof(*active_rxon));
1378 il_print_rx_config_cmd(il);
1380 * We do not commit tx power settings while channel changing,
1381 * do it now if tx power changed.
1383 il_set_tx_power(il, il->tx_power_next, false);
1387 /* If we are currently associated and the new config requires
1388 * an RXON_ASSOC and the new config wants the associated mask enabled,
1389 * we must clear the associated from the active configuration
1390 * before we apply the new config */
1391 if (il_is_associated(il) && new_assoc) {
1392 D_INFO("Toggling associated bit on current RXON\n");
1393 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1396 il_send_cmd_pdu(il, C_RXON,
1397 sizeof(struct il_rxon_cmd), active_rxon);
1399 /* If the mask clearing failed then we set
1400 * active_rxon back to what it was previously */
1402 active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
1403 IL_ERR("Error clearing ASSOC_MSK (%d)\n", ret);
1406 il_clear_ucode_stations(il);
1407 il_restore_stations(il);
1408 ret = il4965_restore_default_wep_keys(il);
1410 IL_ERR("Failed to restore WEP keys (%d)\n", ret);
1415 D_INFO("Sending RXON\n" "* with%s RXON_FILTER_ASSOC_MSK\n"
1416 "* channel = %d\n" "* bssid = %pM\n", (new_assoc ? "" : "out"),
1417 le16_to_cpu(il->staging.channel), il->staging.bssid_addr);
1419 il_set_rxon_hwcrypto(il, !il->cfg->mod_params->sw_crypto);
1421 /* Apply the new configuration
1422 * RXON unassoc clears the station table in uCode so restoration of
1423 * stations is needed after it (the RXON command) completes
1427 il_send_cmd_pdu(il, C_RXON,
1428 sizeof(struct il_rxon_cmd), &il->staging);
1430 IL_ERR("Error setting new RXON (%d)\n", ret);
1433 D_INFO("Return from !new_assoc RXON.\n");
1434 memcpy(active_rxon, &il->staging, sizeof(*active_rxon));
1435 il_clear_ucode_stations(il);
1436 il_restore_stations(il);
1437 ret = il4965_restore_default_wep_keys(il);
1439 IL_ERR("Failed to restore WEP keys (%d)\n", ret);
1444 il->start_calib = 0;
1445 /* Apply the new configuration
1446 * RXON assoc doesn't clear the station table in uCode,
1449 il_send_cmd_pdu(il, C_RXON,
1450 sizeof(struct il_rxon_cmd), &il->staging);
1452 IL_ERR("Error setting new RXON (%d)\n", ret);
1455 memcpy(active_rxon, &il->staging, sizeof(*active_rxon));
1457 il_print_rx_config_cmd(il);
1459 il4965_init_sensitivity(il);
1461 /* If we issue a new RXON command which required a tune then we must
1462 * send a new TXPOWER command or we won't be able to Tx any frames */
1463 ret = il_set_tx_power(il, il->tx_power_next, true);
1465 IL_ERR("Error sending TX power (%d)\n", ret);
1473 il4965_hw_channel_switch(struct il_priv *il,
1474 struct ieee80211_channel_switch *ch_switch)
1478 bool is_ht40 = false;
1479 u8 ctrl_chan_high = 0;
1480 struct il4965_channel_switch_cmd cmd;
1481 const struct il_channel_info *ch_info;
1482 u32 switch_time_in_usec, ucode_switch_time;
1486 u16 beacon_interval = le16_to_cpu(il->timing.beacon_interval);
1487 struct ieee80211_vif *vif = il->vif;
1488 band = (il->band == IEEE80211_BAND_2GHZ);
1490 if (WARN_ON_ONCE(vif == NULL))
1493 is_ht40 = iw4965_is_ht40_channel(il->staging.flags);
1495 if (is_ht40 && (il->staging.flags & RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK))
1499 cmd.expect_beacon = 0;
1500 ch = ch_switch->channel->hw_value;
1501 cmd.channel = cpu_to_le16(ch);
1502 cmd.rxon_flags = il->staging.flags;
1503 cmd.rxon_filter_flags = il->staging.filter_flags;
1504 switch_count = ch_switch->count;
1505 tsf_low = ch_switch->timestamp & 0x0ffffffff;
1507 * calculate the ucode channel switch time
1508 * adding TSF as one of the factor for when to switch
1510 if (il->ucode_beacon_time > tsf_low && beacon_interval) {
1512 ((il->ucode_beacon_time - tsf_low) / beacon_interval)) {
1514 (il->ucode_beacon_time - tsf_low) / beacon_interval;
1518 if (switch_count <= 1)
1519 cmd.switch_time = cpu_to_le32(il->ucode_beacon_time);
1521 switch_time_in_usec =
1522 vif->bss_conf.beacon_int * switch_count * TIME_UNIT;
1524 il_usecs_to_beacons(il, switch_time_in_usec,
1527 il_add_beacon_time(il, il->ucode_beacon_time,
1528 ucode_switch_time, beacon_interval);
1530 D_11H("uCode time for the switch is 0x%x\n", cmd.switch_time);
1531 ch_info = il_get_channel_info(il, il->band, ch);
1533 cmd.expect_beacon = il_is_channel_radar(ch_info);
1535 IL_ERR("invalid channel switch from %u to %u\n",
1536 il->active.channel, ch);
1540 rc = il4965_fill_txpower_tbl(il, band, ch, is_ht40, ctrl_chan_high,
1543 D_11H("error:%d fill txpower_tbl\n", rc);
1547 return il_send_cmd_pdu(il, C_CHANNEL_SWITCH, sizeof(cmd), &cmd);
1551 * il4965_txq_update_byte_cnt_tbl - Set up entry in Tx byte-count array
1554 il4965_txq_update_byte_cnt_tbl(struct il_priv *il, struct il_tx_queue *txq,
1557 struct il4965_scd_bc_tbl *scd_bc_tbl = il->scd_bc_tbls.addr;
1558 int txq_id = txq->q.id;
1559 int write_ptr = txq->q.write_ptr;
1560 int len = byte_cnt + IL_TX_CRC_SIZE + IL_TX_DELIMITER_SIZE;
1563 WARN_ON(len > 0xFFF || write_ptr >= TFD_QUEUE_SIZE_MAX);
1565 bc_ent = cpu_to_le16(len & 0xFFF);
1566 /* Set up byte count within first 256 entries */
1567 scd_bc_tbl[txq_id].tfd_offset[write_ptr] = bc_ent;
1569 /* If within first 64 entries, duplicate at end */
1570 if (write_ptr < TFD_QUEUE_SIZE_BC_DUP)
1571 scd_bc_tbl[txq_id].tfd_offset[TFD_QUEUE_SIZE_MAX + write_ptr] =
1576 * il4965_hw_get_temperature - return the calibrated temperature (in Kelvin)
1577 * @stats: Provides the temperature reading from the uCode
1579 * A return of <0 indicates bogus data in the stats
1582 il4965_hw_get_temperature(struct il_priv *il)
1589 if (test_bit(S_TEMPERATURE, &il->status) &&
1590 (il->_4965.stats.flag & STATS_REPLY_FLG_HT40_MODE_MSK)) {
1591 D_TEMP("Running HT40 temperature calibration\n");
1592 R1 = (s32) le32_to_cpu(il->card_alive_init.therm_r1[1]);
1593 R2 = (s32) le32_to_cpu(il->card_alive_init.therm_r2[1]);
1594 R3 = (s32) le32_to_cpu(il->card_alive_init.therm_r3[1]);
1595 R4 = le32_to_cpu(il->card_alive_init.therm_r4[1]);
1597 D_TEMP("Running temperature calibration\n");
1598 R1 = (s32) le32_to_cpu(il->card_alive_init.therm_r1[0]);
1599 R2 = (s32) le32_to_cpu(il->card_alive_init.therm_r2[0]);
1600 R3 = (s32) le32_to_cpu(il->card_alive_init.therm_r3[0]);
1601 R4 = le32_to_cpu(il->card_alive_init.therm_r4[0]);
1605 * Temperature is only 23 bits, so sign extend out to 32.
1607 * NOTE If we haven't received a stats notification yet
1608 * with an updated temperature, use R4 provided to us in the
1609 * "initialize" ALIVE response.
1611 if (!test_bit(S_TEMPERATURE, &il->status))
1612 vt = sign_extend32(R4, 23);
1614 vt = sign_extend32(le32_to_cpu
1615 (il->_4965.stats.general.common.temperature),
1618 D_TEMP("Calib values R[1-3]: %d %d %d R4: %d\n", R1, R2, R3, vt);
1621 IL_ERR("Calibration conflict R1 == R3\n");
1625 /* Calculate temperature in degrees Kelvin, adjust by 97%.
1626 * Add offset to center the adjustment around 0 degrees Centigrade. */
1627 temperature = TEMPERATURE_CALIB_A_VAL * (vt - R2);
1628 temperature /= (R3 - R1);
1630 (temperature * 97) / 100 + TEMPERATURE_CALIB_KELVIN_OFFSET;
1632 D_TEMP("Calibrated temperature: %dK, %dC\n", temperature,
1633 KELVIN_TO_CELSIUS(temperature));
1638 /* Adjust Txpower only if temperature variance is greater than threshold. */
1639 #define IL_TEMPERATURE_THRESHOLD 3
1642 * il4965_is_temp_calib_needed - determines if new calibration is needed
1644 * If the temperature changed has changed sufficiently, then a recalibration
1647 * Assumes caller will replace il->last_temperature once calibration
1651 il4965_is_temp_calib_needed(struct il_priv *il)
1655 if (!test_bit(S_STATS, &il->status)) {
1656 D_TEMP("Temperature not updated -- no stats.\n");
1660 temp_diff = il->temperature - il->last_temperature;
1662 /* get absolute value */
1663 if (temp_diff < 0) {
1664 D_POWER("Getting cooler, delta %d\n", temp_diff);
1665 temp_diff = -temp_diff;
1666 } else if (temp_diff == 0)
1667 D_POWER("Temperature unchanged\n");
1669 D_POWER("Getting warmer, delta %d\n", temp_diff);
1671 if (temp_diff < IL_TEMPERATURE_THRESHOLD) {
1672 D_POWER(" => thermal txpower calib not needed\n");
1676 D_POWER(" => thermal txpower calib needed\n");
1682 il4965_temperature_calib(struct il_priv *il)
1686 temp = il4965_hw_get_temperature(il);
1687 if (IL_TX_POWER_TEMPERATURE_OUT_OF_RANGE(temp))
1690 if (il->temperature != temp) {
1691 if (il->temperature)
1692 D_TEMP("Temperature changed " "from %dC to %dC\n",
1693 KELVIN_TO_CELSIUS(il->temperature),
1694 KELVIN_TO_CELSIUS(temp));
1696 D_TEMP("Temperature " "initialized to %dC\n",
1697 KELVIN_TO_CELSIUS(temp));
1700 il->temperature = temp;
1701 set_bit(S_TEMPERATURE, &il->status);
1703 if (!il->disable_tx_power_cal &&
1704 unlikely(!test_bit(S_SCANNING, &il->status)) &&
1705 il4965_is_temp_calib_needed(il))
1706 queue_work(il->workqueue, &il->txpower_work);
1710 il4965_get_hcmd_size(u8 cmd_id, u16 len)
1714 return (u16) sizeof(struct il4965_rxon_cmd);
1721 il4965_build_addsta_hcmd(const struct il_addsta_cmd *cmd, u8 * data)
1723 struct il4965_addsta_cmd *addsta = (struct il4965_addsta_cmd *)data;
1724 addsta->mode = cmd->mode;
1725 memcpy(&addsta->sta, &cmd->sta, sizeof(struct sta_id_modify));
1726 memcpy(&addsta->key, &cmd->key, sizeof(struct il4965_keyinfo));
1727 addsta->station_flags = cmd->station_flags;
1728 addsta->station_flags_msk = cmd->station_flags_msk;
1729 addsta->tid_disable_tx = cmd->tid_disable_tx;
1730 addsta->add_immediate_ba_tid = cmd->add_immediate_ba_tid;
1731 addsta->remove_immediate_ba_tid = cmd->remove_immediate_ba_tid;
1732 addsta->add_immediate_ba_ssn = cmd->add_immediate_ba_ssn;
1733 addsta->sleep_tx_count = cmd->sleep_tx_count;
1734 addsta->reserved1 = cpu_to_le16(0);
1735 addsta->reserved2 = cpu_to_le16(0);
1737 return (u16) sizeof(struct il4965_addsta_cmd);
1741 il4965_get_scd_ssn(struct il4965_tx_resp *tx_resp)
1743 return le32_to_cpup(&tx_resp->u.status + tx_resp->frame_count) & MAX_SN;
1747 il4965_tx_status_to_mac80211(u32 status)
1749 status &= TX_STATUS_MSK;
1752 case TX_STATUS_SUCCESS:
1753 case TX_STATUS_DIRECT_DONE:
1754 return IEEE80211_TX_STAT_ACK;
1755 case TX_STATUS_FAIL_DEST_PS:
1756 return IEEE80211_TX_STAT_TX_FILTERED;
1763 il4965_is_tx_success(u32 status)
1765 status &= TX_STATUS_MSK;
1766 return (status == TX_STATUS_SUCCESS || status == TX_STATUS_DIRECT_DONE);
1770 * il4965_tx_status_reply_tx - Handle Tx response for frames in aggregation queue
1773 il4965_tx_status_reply_tx(struct il_priv *il, struct il_ht_agg *agg,
1774 struct il4965_tx_resp *tx_resp, int txq_id,
1778 struct agg_tx_status *frame_status = tx_resp->u.agg_status;
1779 struct ieee80211_tx_info *info = NULL;
1780 struct ieee80211_hdr *hdr = NULL;
1781 u32 rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
1784 if (agg->wait_for_ba)
1785 D_TX_REPLY("got tx response w/o block-ack\n");
1787 agg->frame_count = tx_resp->frame_count;
1788 agg->start_idx = start_idx;
1789 agg->rate_n_flags = rate_n_flags;
1792 /* num frames attempted by Tx command */
1793 if (agg->frame_count == 1) {
1794 /* Only one frame was attempted; no block-ack will arrive */
1795 status = le16_to_cpu(frame_status[0].status);
1798 D_TX_REPLY("FrameCnt = %d, StartIdx=%d idx=%d\n",
1799 agg->frame_count, agg->start_idx, idx);
1801 info = IEEE80211_SKB_CB(il->txq[txq_id].skbs[idx]);
1802 info->status.rates[0].count = tx_resp->failure_frame + 1;
1803 info->flags &= ~IEEE80211_TX_CTL_AMPDU;
1804 info->flags |= il4965_tx_status_to_mac80211(status);
1805 il4965_hwrate_to_tx_control(il, rate_n_flags, info);
1807 D_TX_REPLY("1 Frame 0x%x failure :%d\n", status & 0xff,
1808 tx_resp->failure_frame);
1809 D_TX_REPLY("Rate Info rate_n_flags=%x\n", rate_n_flags);
1811 agg->wait_for_ba = 0;
1813 /* Two or more frames were attempted; expect block-ack */
1815 int start = agg->start_idx;
1816 struct sk_buff *skb;
1818 /* Construct bit-map of pending frames within Tx win */
1819 for (i = 0; i < agg->frame_count; i++) {
1821 status = le16_to_cpu(frame_status[i].status);
1822 seq = le16_to_cpu(frame_status[i].sequence);
1823 idx = SEQ_TO_IDX(seq);
1824 txq_id = SEQ_TO_QUEUE(seq);
1827 (AGG_TX_STATE_FEW_BYTES_MSK |
1828 AGG_TX_STATE_ABORT_MSK))
1831 D_TX_REPLY("FrameCnt = %d, txq_id=%d idx=%d\n",
1832 agg->frame_count, txq_id, idx);
1834 skb = il->txq[txq_id].skbs[idx];
1835 if (WARN_ON_ONCE(skb == NULL))
1837 hdr = (struct ieee80211_hdr *) skb->data;
1839 sc = le16_to_cpu(hdr->seq_ctrl);
1840 if (idx != (SEQ_TO_SN(sc) & 0xff)) {
1841 IL_ERR("BUG_ON idx doesn't match seq control"
1842 " idx=%d, seq_idx=%d, seq=%d\n", idx,
1843 SEQ_TO_SN(sc), hdr->seq_ctrl);
1847 D_TX_REPLY("AGG Frame i=%d idx %d seq=%d\n", i, idx,
1852 sh = (start - idx) + 0xff;
1853 bitmap = bitmap << sh;
1856 } else if (sh < -64)
1857 sh = 0xff - (start - idx);
1861 bitmap = bitmap << sh;
1864 bitmap |= 1ULL << sh;
1865 D_TX_REPLY("start=%d bitmap=0x%llx\n", start,
1866 (unsigned long long)bitmap);
1869 agg->bitmap = bitmap;
1870 agg->start_idx = start;
1871 D_TX_REPLY("Frames %d start_idx=%d bitmap=0x%llx\n",
1872 agg->frame_count, agg->start_idx,
1873 (unsigned long long)agg->bitmap);
1876 agg->wait_for_ba = 1;
1882 il4965_find_station(struct il_priv *il, const u8 * addr)
1886 int ret = IL_INVALID_STATION;
1887 unsigned long flags;
1889 if ((il->iw_mode == NL80211_IFTYPE_ADHOC))
1892 if (is_broadcast_ether_addr(addr))
1893 return il->hw_params.bcast_id;
1895 spin_lock_irqsave(&il->sta_lock, flags);
1896 for (i = start; i < il->hw_params.max_stations; i++)
1897 if (il->stations[i].used &&
1898 (!compare_ether_addr(il->stations[i].sta.sta.addr, addr))) {
1903 D_ASSOC("can not find STA %pM total %d\n", addr, il->num_stations);
1907 * It may be possible that more commands interacting with stations
1908 * arrive before we completed processing the adding of
1911 if (ret != IL_INVALID_STATION &&
1912 (!(il->stations[ret].used & IL_STA_UCODE_ACTIVE) ||
1913 ((il->stations[ret].used & IL_STA_UCODE_ACTIVE) &&
1914 (il->stations[ret].used & IL_STA_UCODE_INPROGRESS)))) {
1915 IL_ERR("Requested station info for sta %d before ready.\n",
1917 ret = IL_INVALID_STATION;
1919 spin_unlock_irqrestore(&il->sta_lock, flags);
1924 il4965_get_ra_sta_id(struct il_priv *il, struct ieee80211_hdr *hdr)
1926 if (il->iw_mode == NL80211_IFTYPE_STATION) {
1929 u8 *da = ieee80211_get_DA(hdr);
1930 return il4965_find_station(il, da);
1935 * il4965_hdl_tx - Handle standard (non-aggregation) Tx response
1938 il4965_hdl_tx(struct il_priv *il, struct il_rx_buf *rxb)
1940 struct il_rx_pkt *pkt = rxb_addr(rxb);
1941 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
1942 int txq_id = SEQ_TO_QUEUE(sequence);
1943 int idx = SEQ_TO_IDX(sequence);
1944 struct il_tx_queue *txq = &il->txq[txq_id];
1945 struct sk_buff *skb;
1946 struct ieee80211_hdr *hdr;
1947 struct ieee80211_tx_info *info;
1948 struct il4965_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
1949 u32 status = le32_to_cpu(tx_resp->u.status);
1950 int uninitialized_var(tid);
1954 unsigned long flags;
1956 if (idx >= txq->q.n_bd || il_queue_used(&txq->q, idx) == 0) {
1957 IL_ERR("Read idx for DMA queue txq_id (%d) idx %d "
1958 "is out of range [0-%d] %d %d\n", txq_id, idx,
1959 txq->q.n_bd, txq->q.write_ptr, txq->q.read_ptr);
1963 txq->time_stamp = jiffies;
1965 skb = txq->skbs[txq->q.read_ptr];
1966 info = IEEE80211_SKB_CB(skb);
1967 memset(&info->status, 0, sizeof(info->status));
1969 hdr = (struct ieee80211_hdr *) skb->data;
1970 if (ieee80211_is_data_qos(hdr->frame_control)) {
1971 qc = ieee80211_get_qos_ctl(hdr);
1975 sta_id = il4965_get_ra_sta_id(il, hdr);
1976 if (txq->sched_retry && unlikely(sta_id == IL_INVALID_STATION)) {
1977 IL_ERR("Station not known\n");
1981 spin_lock_irqsave(&il->sta_lock, flags);
1982 if (txq->sched_retry) {
1983 const u32 scd_ssn = il4965_get_scd_ssn(tx_resp);
1984 struct il_ht_agg *agg = NULL;
1987 agg = &il->stations[sta_id].tid[tid].agg;
1989 il4965_tx_status_reply_tx(il, agg, tx_resp, txq_id, idx);
1991 /* check if BAR is needed */
1992 if ((tx_resp->frame_count == 1) &&
1993 !il4965_is_tx_success(status))
1994 info->flags |= IEEE80211_TX_STAT_AMPDU_NO_BACK;
1996 if (txq->q.read_ptr != (scd_ssn & 0xff)) {
1997 idx = il_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd);
1998 D_TX_REPLY("Retry scheduler reclaim scd_ssn "
1999 "%d idx %d\n", scd_ssn, idx);
2000 freed = il4965_tx_queue_reclaim(il, txq_id, idx);
2002 il4965_free_tfds_in_queue(il, sta_id, tid,
2005 if (il->mac80211_registered &&
2006 il_queue_space(&txq->q) > txq->q.low_mark &&
2007 agg->state != IL_EMPTYING_HW_QUEUE_DELBA)
2008 il_wake_queue(il, txq);
2011 info->status.rates[0].count = tx_resp->failure_frame + 1;
2012 info->flags |= il4965_tx_status_to_mac80211(status);
2013 il4965_hwrate_to_tx_control(il,
2014 le32_to_cpu(tx_resp->rate_n_flags),
2017 D_TX_REPLY("TXQ %d status %s (0x%08x) "
2018 "rate_n_flags 0x%x retries %d\n", txq_id,
2019 il4965_get_tx_fail_reason(status), status,
2020 le32_to_cpu(tx_resp->rate_n_flags),
2021 tx_resp->failure_frame);
2023 freed = il4965_tx_queue_reclaim(il, txq_id, idx);
2024 if (qc && likely(sta_id != IL_INVALID_STATION))
2025 il4965_free_tfds_in_queue(il, sta_id, tid, freed);
2026 else if (sta_id == IL_INVALID_STATION)
2027 D_TX_REPLY("Station not known\n");
2029 if (il->mac80211_registered &&
2030 il_queue_space(&txq->q) > txq->q.low_mark)
2031 il_wake_queue(il, txq);
2033 if (qc && likely(sta_id != IL_INVALID_STATION))
2034 il4965_txq_check_empty(il, sta_id, tid, txq_id);
2036 il4965_check_abort_status(il, tx_resp->frame_count, status);
2038 spin_unlock_irqrestore(&il->sta_lock, flags);
2041 /* Set up 4965-specific Rx frame reply handlers */
2043 il4965_handler_setup(struct il_priv *il)
2045 /* Legacy Rx frames */
2046 il->handlers[N_RX] = il4965_hdl_rx;
2048 il->handlers[C_TX] = il4965_hdl_tx;
2051 static struct il_hcmd_ops il4965_hcmd = {
2052 .rxon_assoc = il4965_send_rxon_assoc,
2053 .commit_rxon = il4965_commit_rxon,
2054 .set_rxon_chain = il4965_set_rxon_chain,
2058 il4965_post_scan(struct il_priv *il)
2061 * Since setting the RXON may have been deferred while
2062 * performing the scan, fire one off if needed
2064 if (memcmp(&il->staging, &il->active, sizeof(il->staging)))
2069 il4965_post_associate(struct il_priv *il)
2071 struct ieee80211_vif *vif = il->vif;
2072 struct ieee80211_conf *conf = NULL;
2075 if (!vif || !il->is_open)
2078 if (test_bit(S_EXIT_PENDING, &il->status))
2081 il_scan_cancel_timeout(il, 200);
2083 conf = &il->hw->conf;
2085 il->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2088 ret = il_send_rxon_timing(il);
2090 IL_WARN("RXON timing - " "Attempting to continue.\n");
2092 il->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
2094 il_set_rxon_ht(il, &il->current_ht_config);
2096 if (il->ops->hcmd->set_rxon_chain)
2097 il->ops->hcmd->set_rxon_chain(il);
2099 il->staging.assoc_id = cpu_to_le16(vif->bss_conf.aid);
2101 D_ASSOC("assoc id %d beacon interval %d\n", vif->bss_conf.aid,
2102 vif->bss_conf.beacon_int);
2104 if (vif->bss_conf.use_short_preamble)
2105 il->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2107 il->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2109 if (il->staging.flags & RXON_FLG_BAND_24G_MSK) {
2110 if (vif->bss_conf.use_short_slot)
2111 il->staging.flags |= RXON_FLG_SHORT_SLOT_MSK;
2113 il->staging.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2118 D_ASSOC("Associated as %d to: %pM\n", vif->bss_conf.aid,
2119 il->active.bssid_addr);
2121 switch (vif->type) {
2122 case NL80211_IFTYPE_STATION:
2124 case NL80211_IFTYPE_ADHOC:
2125 il4965_send_beacon_cmd(il);
2128 IL_ERR("%s Should not be called in %d mode\n", __func__,
2133 /* the chain noise calibration will enabled PM upon completion
2134 * If chain noise has already been run, then we need to enable
2135 * power management here */
2136 if (il->chain_noise_data.state == IL_CHAIN_NOISE_DONE)
2137 il_power_update_mode(il, false);
2139 /* Enable Rx differential gain and sensitivity calibrations */
2140 il4965_chain_noise_reset(il);
2141 il->start_calib = 1;
2145 il4965_config_ap(struct il_priv *il)
2147 struct ieee80211_vif *vif = il->vif;
2150 lockdep_assert_held(&il->mutex);
2152 if (test_bit(S_EXIT_PENDING, &il->status))
2155 /* The following should be done only at AP bring up */
2156 if (!il_is_associated(il)) {
2158 /* RXON - unassoc (to set timing command) */
2159 il->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2163 ret = il_send_rxon_timing(il);
2165 IL_WARN("RXON timing failed - "
2166 "Attempting to continue.\n");
2168 /* AP has all antennas */
2169 il->chain_noise_data.active_chains = il->hw_params.valid_rx_ant;
2170 il_set_rxon_ht(il, &il->current_ht_config);
2171 if (il->ops->hcmd->set_rxon_chain)
2172 il->ops->hcmd->set_rxon_chain(il);
2174 il->staging.assoc_id = 0;
2176 if (vif->bss_conf.use_short_preamble)
2177 il->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2179 il->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2181 if (il->staging.flags & RXON_FLG_BAND_24G_MSK) {
2182 if (vif->bss_conf.use_short_slot)
2183 il->staging.flags |= RXON_FLG_SHORT_SLOT_MSK;
2185 il->staging.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2187 /* need to send beacon cmd before committing assoc RXON! */
2188 il4965_send_beacon_cmd(il);
2189 /* restore RXON assoc */
2190 il->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
2193 il4965_send_beacon_cmd(il);
2196 static struct il_hcmd_utils_ops il4965_hcmd_utils = {
2197 .get_hcmd_size = il4965_get_hcmd_size,
2198 .build_addsta_hcmd = il4965_build_addsta_hcmd,
2199 .request_scan = il4965_request_scan,
2200 .post_scan = il4965_post_scan,
2203 static struct il_lib_ops il4965_lib = {
2204 .txq_update_byte_cnt_tbl = il4965_txq_update_byte_cnt_tbl,
2205 .txq_attach_buf_to_tfd = il4965_hw_txq_attach_buf_to_tfd,
2206 .txq_free_tfd = il4965_hw_txq_free_tfd,
2207 .txq_init = il4965_hw_tx_queue_init,
2208 .handler_setup = il4965_handler_setup,
2209 .is_valid_rtc_data_addr = il4965_hw_valid_rtc_data_addr,
2210 .init_alive_start = il4965_init_alive_start,
2211 .load_ucode = il4965_load_bsm,
2212 .dump_nic_error_log = il4965_dump_nic_error_log,
2213 .dump_fh = il4965_dump_fh,
2214 .set_channel_switch = il4965_hw_channel_switch,
2216 .init = il_apm_init,
2217 .config = il4965_nic_config,
2220 .acquire_semaphore = il4965_eeprom_acquire_semaphore,
2221 .release_semaphore = il4965_eeprom_release_semaphore,
2223 .send_tx_power = il4965_send_tx_power,
2224 .update_chain_flags = il4965_update_chain_flags,
2226 .temperature = il4965_temperature_calib,
2228 #ifdef CONFIG_IWLEGACY_DEBUGFS
2230 .rx_stats_read = il4965_ucode_rx_stats_read,
2231 .tx_stats_read = il4965_ucode_tx_stats_read,
2232 .general_stats_read = il4965_ucode_general_stats_read,
2237 static const struct il_legacy_ops il4965_legacy_ops = {
2238 .post_associate = il4965_post_associate,
2239 .config_ap = il4965_config_ap,
2240 .manage_ibss_station = il4965_manage_ibss_station,
2241 .update_bcast_stations = il4965_update_bcast_stations,
2244 const struct il_ops il4965_ops = {
2246 .hcmd = &il4965_hcmd,
2247 .utils = &il4965_hcmd_utils,
2248 .led = &il4965_led_ops,
2249 .legacy = &il4965_legacy_ops,
2252 struct il_cfg il4965_cfg = {
2253 .name = "Intel(R) Wireless WiFi Link 4965AGN",
2254 .fw_name_pre = IL4965_FW_PRE,
2255 .ucode_api_max = IL4965_UCODE_API_MAX,
2256 .ucode_api_min = IL4965_UCODE_API_MIN,
2257 .sku = IL_SKU_A | IL_SKU_G | IL_SKU_N,
2258 .valid_tx_ant = ANT_AB,
2259 .valid_rx_ant = ANT_ABC,
2260 .eeprom_ver = EEPROM_4965_EEPROM_VERSION,
2261 .eeprom_calib_ver = EEPROM_4965_TX_POWER_VERSION,
2262 .mod_params = &il4965_mod_params,
2263 .led_mode = IL_LED_BLINK,
2265 * Force use of chains B and C for scan RX on 5 GHz band
2266 * because the device has off-channel reception on chain A.
2268 .scan_rx_antennas[IEEE80211_BAND_5GHZ] = ANT_BC,
2270 .eeprom_size = IL4965_EEPROM_IMG_SIZE,
2271 .num_of_queues = IL49_NUM_QUEUES,
2272 .num_of_ampdu_queues = IL49_NUM_AMPDU_QUEUES,
2276 .led_compensation = 61,
2277 .chain_noise_num_beacons = IL4965_CAL_NUM_BEACONS,
2278 .wd_timeout = IL_DEF_WD_TIMEOUT,
2279 .temperature_kelvin = true,
2280 .ucode_tracing = true,
2281 .sensitivity_calib_by_driver = true,
2282 .chain_noise_calib_by_driver = true,
2284 .regulatory_bands = {
2285 EEPROM_REGULATORY_BAND_1_CHANNELS,
2286 EEPROM_REGULATORY_BAND_2_CHANNELS,
2287 EEPROM_REGULATORY_BAND_3_CHANNELS,
2288 EEPROM_REGULATORY_BAND_4_CHANNELS,
2289 EEPROM_REGULATORY_BAND_5_CHANNELS,
2290 EEPROM_4965_REGULATORY_BAND_24_HT40_CHANNELS,
2291 EEPROM_4965_REGULATORY_BAND_52_HT40_CHANNELS
2296 /* Module firmware */
2297 MODULE_FIRMWARE(IL4965_MODULE_FIRMWARE(IL4965_UCODE_API_MAX));