1 /******************************************************************************
3 * Copyright(c) 2003 - 2009 Intel Corporation. All rights reserved.
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of version 2 of the GNU General Public License as
7 * published by the Free Software Foundation.
9 * This program is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
14 * You should have received a copy of the GNU General Public License along with
15 * this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
18 * The full GNU General Public License is included in this distribution in the
19 * file called LICENSE.
21 * Contact Information:
22 * Intel Linux Wireless <ilw@linux.intel.com>
23 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
25 *****************************************************************************/
27 #include <linux/kernel.h>
28 #include <linux/module.h>
29 #include <linux/init.h>
30 #include <linux/pci.h>
31 #include <linux/dma-mapping.h>
32 #include <linux/delay.h>
33 #include <linux/skbuff.h>
34 #include <linux/netdevice.h>
35 #include <linux/wireless.h>
36 #include <net/mac80211.h>
37 #include <linux/etherdevice.h>
38 #include <asm/unaligned.h>
40 #include "iwl-eeprom.h"
44 #include "iwl-helpers.h"
45 #include "iwl-calib.h"
47 #include "iwl-agn-led.h"
49 static int iwl4965_send_tx_power(struct iwl_priv *priv);
50 static int iwl4965_hw_get_temperature(struct iwl_priv *priv);
52 /* Highest firmware API version supported */
53 #define IWL4965_UCODE_API_MAX 2
55 /* Lowest firmware API version supported */
56 #define IWL4965_UCODE_API_MIN 2
58 #define IWL4965_FW_PRE "iwlwifi-4965-"
59 #define _IWL4965_MODULE_FIRMWARE(api) IWL4965_FW_PRE #api ".ucode"
60 #define IWL4965_MODULE_FIRMWARE(api) _IWL4965_MODULE_FIRMWARE(api)
63 /* module parameters */
64 static struct iwl_mod_params iwl4965_mod_params = {
67 /* the rest are 0 by default */
70 /* check contents of special bootstrap uCode SRAM */
71 static int iwl4965_verify_bsm(struct iwl_priv *priv)
73 __le32 *image = priv->ucode_boot.v_addr;
74 u32 len = priv->ucode_boot.len;
78 IWL_DEBUG_INFO(priv, "Begin verify bsm\n");
80 /* verify BSM SRAM contents */
81 val = iwl_read_prph(priv, BSM_WR_DWCOUNT_REG);
82 for (reg = BSM_SRAM_LOWER_BOUND;
83 reg < BSM_SRAM_LOWER_BOUND + len;
84 reg += sizeof(u32), image++) {
85 val = iwl_read_prph(priv, reg);
86 if (val != le32_to_cpu(*image)) {
87 IWL_ERR(priv, "BSM uCode verification failed at "
88 "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
90 reg - BSM_SRAM_LOWER_BOUND, len,
91 val, le32_to_cpu(*image));
96 IWL_DEBUG_INFO(priv, "BSM bootstrap uCode image OK\n");
102 * iwl4965_load_bsm - Load bootstrap instructions
106 * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
107 * in special SRAM that does not power down during RFKILL. When powering back
108 * up after power-saving sleeps (or during initial uCode load), the BSM loads
109 * the bootstrap program into the on-board processor, and starts it.
111 * The bootstrap program loads (via DMA) instructions and data for a new
112 * program from host DRAM locations indicated by the host driver in the
113 * BSM_DRAM_* registers. Once the new program is loaded, it starts
116 * When initializing the NIC, the host driver points the BSM to the
117 * "initialize" uCode image. This uCode sets up some internal data, then
118 * notifies host via "initialize alive" that it is complete.
120 * The host then replaces the BSM_DRAM_* pointer values to point to the
121 * normal runtime uCode instructions and a backup uCode data cache buffer
122 * (filled initially with starting data values for the on-board processor),
123 * then triggers the "initialize" uCode to load and launch the runtime uCode,
124 * which begins normal operation.
126 * When doing a power-save shutdown, runtime uCode saves data SRAM into
127 * the backup data cache in DRAM before SRAM is powered down.
129 * When powering back up, the BSM loads the bootstrap program. This reloads
130 * the runtime uCode instructions and the backup data cache into SRAM,
131 * and re-launches the runtime uCode from where it left off.
133 static int iwl4965_load_bsm(struct iwl_priv *priv)
135 __le32 *image = priv->ucode_boot.v_addr;
136 u32 len = priv->ucode_boot.len;
146 IWL_DEBUG_INFO(priv, "Begin load bsm\n");
148 priv->ucode_type = UCODE_RT;
150 /* make sure bootstrap program is no larger than BSM's SRAM size */
151 if (len > IWL49_MAX_BSM_SIZE)
154 /* Tell bootstrap uCode where to find the "Initialize" uCode
155 * in host DRAM ... host DRAM physical address bits 35:4 for 4965.
156 * NOTE: iwl_init_alive_start() will replace these values,
157 * after the "initialize" uCode has run, to point to
158 * runtime/protocol instructions and backup data cache.
160 pinst = priv->ucode_init.p_addr >> 4;
161 pdata = priv->ucode_init_data.p_addr >> 4;
162 inst_len = priv->ucode_init.len;
163 data_len = priv->ucode_init_data.len;
165 iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
166 iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
167 iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
168 iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
170 /* Fill BSM memory with bootstrap instructions */
171 for (reg_offset = BSM_SRAM_LOWER_BOUND;
172 reg_offset < BSM_SRAM_LOWER_BOUND + len;
173 reg_offset += sizeof(u32), image++)
174 _iwl_write_prph(priv, reg_offset, le32_to_cpu(*image));
176 ret = iwl4965_verify_bsm(priv);
180 /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
181 iwl_write_prph(priv, BSM_WR_MEM_SRC_REG, 0x0);
182 iwl_write_prph(priv, BSM_WR_MEM_DST_REG, IWL49_RTC_INST_LOWER_BOUND);
183 iwl_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
185 /* Load bootstrap code into instruction SRAM now,
186 * to prepare to load "initialize" uCode */
187 iwl_write_prph(priv, BSM_WR_CTRL_REG, BSM_WR_CTRL_REG_BIT_START);
189 /* Wait for load of bootstrap uCode to finish */
190 for (i = 0; i < 100; i++) {
191 done = iwl_read_prph(priv, BSM_WR_CTRL_REG);
192 if (!(done & BSM_WR_CTRL_REG_BIT_START))
197 IWL_DEBUG_INFO(priv, "BSM write complete, poll %d iterations\n", i);
199 IWL_ERR(priv, "BSM write did not complete!\n");
203 /* Enable future boot loads whenever power management unit triggers it
204 * (e.g. when powering back up after power-save shutdown) */
205 iwl_write_prph(priv, BSM_WR_CTRL_REG, BSM_WR_CTRL_REG_BIT_START_EN);
212 * iwl4965_set_ucode_ptrs - Set uCode address location
214 * Tell initialization uCode where to find runtime uCode.
216 * BSM registers initially contain pointers to initialization uCode.
217 * We need to replace them to load runtime uCode inst and data,
218 * and to save runtime data when powering down.
220 static int iwl4965_set_ucode_ptrs(struct iwl_priv *priv)
226 /* bits 35:4 for 4965 */
227 pinst = priv->ucode_code.p_addr >> 4;
228 pdata = priv->ucode_data_backup.p_addr >> 4;
230 /* Tell bootstrap uCode where to find image to load */
231 iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
232 iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
233 iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
234 priv->ucode_data.len);
236 /* Inst byte count must be last to set up, bit 31 signals uCode
237 * that all new ptr/size info is in place */
238 iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
239 priv->ucode_code.len | BSM_DRAM_INST_LOAD);
240 IWL_DEBUG_INFO(priv, "Runtime uCode pointers are set.\n");
246 * iwl4965_init_alive_start - Called after REPLY_ALIVE notification received
248 * Called after REPLY_ALIVE notification received from "initialize" uCode.
250 * The 4965 "initialize" ALIVE reply contains calibration data for:
251 * Voltage, temperature, and MIMO tx gain correction, now stored in priv
252 * (3945 does not contain this data).
254 * Tell "initialize" uCode to go ahead and load the runtime uCode.
256 static void iwl4965_init_alive_start(struct iwl_priv *priv)
258 /* Check alive response for "valid" sign from uCode */
259 if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
260 /* We had an error bringing up the hardware, so take it
261 * all the way back down so we can try again */
262 IWL_DEBUG_INFO(priv, "Initialize Alive failed.\n");
266 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
267 * This is a paranoid check, because we would not have gotten the
268 * "initialize" alive if code weren't properly loaded. */
269 if (iwl_verify_ucode(priv)) {
270 /* Runtime instruction load was bad;
271 * take it all the way back down so we can try again */
272 IWL_DEBUG_INFO(priv, "Bad \"initialize\" uCode load.\n");
276 /* Calculate temperature */
277 priv->temperature = iwl4965_hw_get_temperature(priv);
279 /* Send pointers to protocol/runtime uCode image ... init code will
280 * load and launch runtime uCode, which will send us another "Alive"
282 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
283 if (iwl4965_set_ucode_ptrs(priv)) {
284 /* Runtime instruction load won't happen;
285 * take it all the way back down so we can try again */
286 IWL_DEBUG_INFO(priv, "Couldn't set up uCode pointers.\n");
292 queue_work(priv->workqueue, &priv->restart);
295 static bool is_ht40_channel(__le32 rxon_flags)
297 int chan_mod = le32_to_cpu(rxon_flags & RXON_FLG_CHANNEL_MODE_MSK)
298 >> RXON_FLG_CHANNEL_MODE_POS;
299 return ((chan_mod == CHANNEL_MODE_PURE_40) ||
300 (chan_mod == CHANNEL_MODE_MIXED));
306 static u16 iwl4965_eeprom_calib_version(struct iwl_priv *priv)
308 return iwl_eeprom_query16(priv, EEPROM_4965_CALIB_VERSION_OFFSET);
312 * Activate/Deactivate Tx DMA/FIFO channels according tx fifos mask
313 * must be called under priv->lock and mac access
315 static void iwl4965_txq_set_sched(struct iwl_priv *priv, u32 mask)
317 iwl_write_prph(priv, IWL49_SCD_TXFACT, mask);
320 static int iwl4965_apm_init(struct iwl_priv *priv)
324 iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS,
325 CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
327 /* disable L0s without affecting L1 :don't wait for ICH L0s bug W/A) */
328 iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS,
329 CSR_GIO_CHICKEN_BITS_REG_BIT_L1A_NO_L0S_RX);
331 /* set "initialization complete" bit to move adapter
332 * D0U* --> D0A* state */
333 iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
335 /* wait for clock stabilization */
336 ret = iwl_poll_bit(priv, CSR_GP_CNTRL,
337 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
338 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
340 IWL_DEBUG_INFO(priv, "Failed to init the card\n");
345 iwl_write_prph(priv, APMG_CLK_CTRL_REG, APMG_CLK_VAL_DMA_CLK_RQT |
346 APMG_CLK_VAL_BSM_CLK_RQT);
350 /* disable L1-Active */
351 iwl_set_bits_prph(priv, APMG_PCIDEV_STT_REG,
352 APMG_PCIDEV_STT_VAL_L1_ACT_DIS);
359 static void iwl4965_nic_config(struct iwl_priv *priv)
365 spin_lock_irqsave(&priv->lock, flags);
367 lctl = iwl_pcie_link_ctl(priv);
369 /* HW bug W/A - negligible power consumption */
370 /* L1-ASPM is enabled by BIOS */
371 if ((lctl & PCI_CFG_LINK_CTRL_VAL_L1_EN) == PCI_CFG_LINK_CTRL_VAL_L1_EN)
372 /* L1-ASPM enabled: disable L0S */
373 iwl_set_bit(priv, CSR_GIO_REG, CSR_GIO_REG_VAL_L0S_ENABLED);
375 /* L1-ASPM disabled: enable L0S */
376 iwl_clear_bit(priv, CSR_GIO_REG, CSR_GIO_REG_VAL_L0S_ENABLED);
378 radio_cfg = iwl_eeprom_query16(priv, EEPROM_RADIO_CONFIG);
380 /* write radio config values to register */
381 if (EEPROM_RF_CFG_TYPE_MSK(radio_cfg) == EEPROM_4965_RF_CFG_TYPE_MAX)
382 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
383 EEPROM_RF_CFG_TYPE_MSK(radio_cfg) |
384 EEPROM_RF_CFG_STEP_MSK(radio_cfg) |
385 EEPROM_RF_CFG_DASH_MSK(radio_cfg));
387 /* set CSR_HW_CONFIG_REG for uCode use */
388 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
389 CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
390 CSR_HW_IF_CONFIG_REG_BIT_MAC_SI);
392 priv->calib_info = (struct iwl_eeprom_calib_info *)
393 iwl_eeprom_query_addr(priv, EEPROM_4965_CALIB_TXPOWER_OFFSET);
395 spin_unlock_irqrestore(&priv->lock, flags);
398 /* Reset differential Rx gains in NIC to prepare for chain noise calibration.
399 * Called after every association, but this runs only once!
400 * ... once chain noise is calibrated the first time, it's good forever. */
401 static void iwl4965_chain_noise_reset(struct iwl_priv *priv)
403 struct iwl_chain_noise_data *data = &(priv->chain_noise_data);
405 if ((data->state == IWL_CHAIN_NOISE_ALIVE) && iwl_is_associated(priv)) {
406 struct iwl_calib_diff_gain_cmd cmd;
408 memset(&cmd, 0, sizeof(cmd));
409 cmd.hdr.op_code = IWL_PHY_CALIBRATE_DIFF_GAIN_CMD;
413 if (iwl_send_cmd_pdu(priv, REPLY_PHY_CALIBRATION_CMD,
416 "Could not send REPLY_PHY_CALIBRATION_CMD\n");
417 data->state = IWL_CHAIN_NOISE_ACCUMULATE;
418 IWL_DEBUG_CALIB(priv, "Run chain_noise_calibrate\n");
422 static void iwl4965_gain_computation(struct iwl_priv *priv,
424 u16 min_average_noise_antenna_i,
425 u32 min_average_noise,
429 struct iwl_chain_noise_data *data = &priv->chain_noise_data;
431 data->delta_gain_code[min_average_noise_antenna_i] = 0;
433 for (i = default_chain; i < NUM_RX_CHAINS; i++) {
436 if (!(data->disconn_array[i]) &&
437 (data->delta_gain_code[i] ==
438 CHAIN_NOISE_DELTA_GAIN_INIT_VAL)) {
439 delta_g = average_noise[i] - min_average_noise;
440 data->delta_gain_code[i] = (u8)((delta_g * 10) / 15);
441 data->delta_gain_code[i] =
442 min(data->delta_gain_code[i],
443 (u8) CHAIN_NOISE_MAX_DELTA_GAIN_CODE);
445 data->delta_gain_code[i] =
446 (data->delta_gain_code[i] | (1 << 2));
448 data->delta_gain_code[i] = 0;
451 IWL_DEBUG_CALIB(priv, "delta_gain_codes: a %d b %d c %d\n",
452 data->delta_gain_code[0],
453 data->delta_gain_code[1],
454 data->delta_gain_code[2]);
456 /* Differential gain gets sent to uCode only once */
457 if (!data->radio_write) {
458 struct iwl_calib_diff_gain_cmd cmd;
459 data->radio_write = 1;
461 memset(&cmd, 0, sizeof(cmd));
462 cmd.hdr.op_code = IWL_PHY_CALIBRATE_DIFF_GAIN_CMD;
463 cmd.diff_gain_a = data->delta_gain_code[0];
464 cmd.diff_gain_b = data->delta_gain_code[1];
465 cmd.diff_gain_c = data->delta_gain_code[2];
466 ret = iwl_send_cmd_pdu(priv, REPLY_PHY_CALIBRATION_CMD,
469 IWL_DEBUG_CALIB(priv, "fail sending cmd "
470 "REPLY_PHY_CALIBRATION_CMD \n");
472 /* TODO we might want recalculate
473 * rx_chain in rxon cmd */
475 /* Mark so we run this algo only once! */
476 data->state = IWL_CHAIN_NOISE_CALIBRATED;
478 data->chain_noise_a = 0;
479 data->chain_noise_b = 0;
480 data->chain_noise_c = 0;
481 data->chain_signal_a = 0;
482 data->chain_signal_b = 0;
483 data->chain_signal_c = 0;
484 data->beacon_count = 0;
487 static void iwl4965_bg_txpower_work(struct work_struct *work)
489 struct iwl_priv *priv = container_of(work, struct iwl_priv,
492 /* If a scan happened to start before we got here
493 * then just return; the statistics notification will
494 * kick off another scheduled work to compensate for
495 * any temperature delta we missed here. */
496 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
497 test_bit(STATUS_SCANNING, &priv->status))
500 mutex_lock(&priv->mutex);
502 /* Regardless of if we are associated, we must reconfigure the
503 * TX power since frames can be sent on non-radar channels while
505 iwl4965_send_tx_power(priv);
507 /* Update last_temperature to keep is_calib_needed from running
508 * when it isn't needed... */
509 priv->last_temperature = priv->temperature;
511 mutex_unlock(&priv->mutex);
515 * Acquire priv->lock before calling this function !
517 static void iwl4965_set_wr_ptrs(struct iwl_priv *priv, int txq_id, u32 index)
519 iwl_write_direct32(priv, HBUS_TARG_WRPTR,
520 (index & 0xff) | (txq_id << 8));
521 iwl_write_prph(priv, IWL49_SCD_QUEUE_RDPTR(txq_id), index);
525 * iwl4965_tx_queue_set_status - (optionally) start Tx/Cmd queue
526 * @tx_fifo_id: Tx DMA/FIFO channel (range 0-7) that the queue will feed
527 * @scd_retry: (1) Indicates queue will be used in aggregation mode
529 * NOTE: Acquire priv->lock before calling this function !
531 static void iwl4965_tx_queue_set_status(struct iwl_priv *priv,
532 struct iwl_tx_queue *txq,
533 int tx_fifo_id, int scd_retry)
535 int txq_id = txq->q.id;
537 /* Find out whether to activate Tx queue */
538 int active = test_bit(txq_id, &priv->txq_ctx_active_msk) ? 1 : 0;
540 /* Set up and activate */
541 iwl_write_prph(priv, IWL49_SCD_QUEUE_STATUS_BITS(txq_id),
542 (active << IWL49_SCD_QUEUE_STTS_REG_POS_ACTIVE) |
543 (tx_fifo_id << IWL49_SCD_QUEUE_STTS_REG_POS_TXF) |
544 (scd_retry << IWL49_SCD_QUEUE_STTS_REG_POS_WSL) |
545 (scd_retry << IWL49_SCD_QUEUE_STTS_REG_POS_SCD_ACK) |
546 IWL49_SCD_QUEUE_STTS_REG_MSK);
548 txq->sched_retry = scd_retry;
550 IWL_DEBUG_INFO(priv, "%s %s Queue %d on AC %d\n",
551 active ? "Activate" : "Deactivate",
552 scd_retry ? "BA" : "AC", txq_id, tx_fifo_id);
555 static const u16 default_queue_to_tx_fifo[] = {
565 static int iwl4965_alive_notify(struct iwl_priv *priv)
572 spin_lock_irqsave(&priv->lock, flags);
574 /* Clear 4965's internal Tx Scheduler data base */
575 priv->scd_base_addr = iwl_read_prph(priv, IWL49_SCD_SRAM_BASE_ADDR);
576 a = priv->scd_base_addr + IWL49_SCD_CONTEXT_DATA_OFFSET;
577 for (; a < priv->scd_base_addr + IWL49_SCD_TX_STTS_BITMAP_OFFSET; a += 4)
578 iwl_write_targ_mem(priv, a, 0);
579 for (; a < priv->scd_base_addr + IWL49_SCD_TRANSLATE_TBL_OFFSET; a += 4)
580 iwl_write_targ_mem(priv, a, 0);
581 for (; a < priv->scd_base_addr +
582 IWL49_SCD_TRANSLATE_TBL_OFFSET_QUEUE(priv->hw_params.max_txq_num); a += 4)
583 iwl_write_targ_mem(priv, a, 0);
585 /* Tel 4965 where to find Tx byte count tables */
586 iwl_write_prph(priv, IWL49_SCD_DRAM_BASE_ADDR,
587 priv->scd_bc_tbls.dma >> 10);
589 /* Enable DMA channel */
590 for (chan = 0; chan < FH49_TCSR_CHNL_NUM ; chan++)
591 iwl_write_direct32(priv, FH_TCSR_CHNL_TX_CONFIG_REG(chan),
592 FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE |
593 FH_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_ENABLE);
595 /* Update FH chicken bits */
596 reg_val = iwl_read_direct32(priv, FH_TX_CHICKEN_BITS_REG);
597 iwl_write_direct32(priv, FH_TX_CHICKEN_BITS_REG,
598 reg_val | FH_TX_CHICKEN_BITS_SCD_AUTO_RETRY_EN);
600 /* Disable chain mode for all queues */
601 iwl_write_prph(priv, IWL49_SCD_QUEUECHAIN_SEL, 0);
603 /* Initialize each Tx queue (including the command queue) */
604 for (i = 0; i < priv->hw_params.max_txq_num; i++) {
606 /* TFD circular buffer read/write indexes */
607 iwl_write_prph(priv, IWL49_SCD_QUEUE_RDPTR(i), 0);
608 iwl_write_direct32(priv, HBUS_TARG_WRPTR, 0 | (i << 8));
610 /* Max Tx Window size for Scheduler-ACK mode */
611 iwl_write_targ_mem(priv, priv->scd_base_addr +
612 IWL49_SCD_CONTEXT_QUEUE_OFFSET(i),
614 IWL49_SCD_QUEUE_CTX_REG1_WIN_SIZE_POS) &
615 IWL49_SCD_QUEUE_CTX_REG1_WIN_SIZE_MSK);
618 iwl_write_targ_mem(priv, priv->scd_base_addr +
619 IWL49_SCD_CONTEXT_QUEUE_OFFSET(i) +
622 IWL49_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_POS) &
623 IWL49_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_MSK);
626 iwl_write_prph(priv, IWL49_SCD_INTERRUPT_MASK,
627 (1 << priv->hw_params.max_txq_num) - 1);
629 /* Activate all Tx DMA/FIFO channels */
630 priv->cfg->ops->lib->txq_set_sched(priv, IWL_MASK(0, 6));
632 iwl4965_set_wr_ptrs(priv, IWL_CMD_QUEUE_NUM, 0);
634 /* Map each Tx/cmd queue to its corresponding fifo */
635 for (i = 0; i < ARRAY_SIZE(default_queue_to_tx_fifo); i++) {
636 int ac = default_queue_to_tx_fifo[i];
637 iwl_txq_ctx_activate(priv, i);
638 iwl4965_tx_queue_set_status(priv, &priv->txq[i], ac, 0);
641 spin_unlock_irqrestore(&priv->lock, flags);
646 static struct iwl_sensitivity_ranges iwl4965_sensitivity = {
648 .max_nrg_cck = 0, /* not used, set to 0 */
650 .auto_corr_min_ofdm = 85,
651 .auto_corr_min_ofdm_mrc = 170,
652 .auto_corr_min_ofdm_x1 = 105,
653 .auto_corr_min_ofdm_mrc_x1 = 220,
655 .auto_corr_max_ofdm = 120,
656 .auto_corr_max_ofdm_mrc = 210,
657 .auto_corr_max_ofdm_x1 = 140,
658 .auto_corr_max_ofdm_mrc_x1 = 270,
660 .auto_corr_min_cck = 125,
661 .auto_corr_max_cck = 200,
662 .auto_corr_min_cck_mrc = 200,
663 .auto_corr_max_cck_mrc = 400,
668 .barker_corr_th_min = 190,
669 .barker_corr_th_min_mrc = 390,
673 static void iwl4965_set_ct_threshold(struct iwl_priv *priv)
676 priv->hw_params.ct_kill_threshold =
677 CELSIUS_TO_KELVIN(CT_KILL_THRESHOLD_LEGACY);
681 * iwl4965_hw_set_hw_params
683 * Called when initializing driver
685 static int iwl4965_hw_set_hw_params(struct iwl_priv *priv)
687 if (priv->cfg->mod_params->num_of_queues >= IWL_MIN_NUM_QUEUES &&
688 priv->cfg->mod_params->num_of_queues <= IWL49_NUM_QUEUES)
689 priv->cfg->num_of_queues =
690 priv->cfg->mod_params->num_of_queues;
692 priv->hw_params.max_txq_num = priv->cfg->num_of_queues;
693 priv->hw_params.dma_chnl_num = FH49_TCSR_CHNL_NUM;
694 priv->hw_params.scd_bc_tbls_size =
695 priv->cfg->num_of_queues *
696 sizeof(struct iwl4965_scd_bc_tbl);
697 priv->hw_params.tfd_size = sizeof(struct iwl_tfd);
698 priv->hw_params.max_stations = IWL4965_STATION_COUNT;
699 priv->hw_params.bcast_sta_id = IWL4965_BROADCAST_ID;
700 priv->hw_params.max_data_size = IWL49_RTC_DATA_SIZE;
701 priv->hw_params.max_inst_size = IWL49_RTC_INST_SIZE;
702 priv->hw_params.max_bsm_size = BSM_SRAM_SIZE;
703 priv->hw_params.ht40_channel = BIT(IEEE80211_BAND_5GHZ);
705 priv->hw_params.rx_wrt_ptr_reg = FH_RSCSR_CHNL0_WPTR;
707 priv->hw_params.tx_chains_num = 2;
708 priv->hw_params.rx_chains_num = 2;
709 priv->hw_params.valid_tx_ant = ANT_A | ANT_B;
710 priv->hw_params.valid_rx_ant = ANT_A | ANT_B;
711 if (priv->cfg->ops->lib->temp_ops.set_ct_kill)
712 priv->cfg->ops->lib->temp_ops.set_ct_kill(priv);
714 priv->hw_params.sens = &iwl4965_sensitivity;
719 static s32 iwl4965_math_div_round(s32 num, s32 denom, s32 *res)
732 *res = ((num * 2 + denom) / (denom * 2)) * sign;
738 * iwl4965_get_voltage_compensation - Power supply voltage comp for txpower
740 * Determines power supply voltage compensation for txpower calculations.
741 * Returns number of 1/2-dB steps to subtract from gain table index,
742 * to compensate for difference between power supply voltage during
743 * factory measurements, vs. current power supply voltage.
745 * Voltage indication is higher for lower voltage.
746 * Lower voltage requires more gain (lower gain table index).
748 static s32 iwl4965_get_voltage_compensation(s32 eeprom_voltage,
753 if ((TX_POWER_IWL_ILLEGAL_VOLTAGE == eeprom_voltage) ||
754 (TX_POWER_IWL_ILLEGAL_VOLTAGE == current_voltage))
757 iwl4965_math_div_round(current_voltage - eeprom_voltage,
758 TX_POWER_IWL_VOLTAGE_CODES_PER_03V, &comp);
760 if (current_voltage > eeprom_voltage)
762 if ((comp < -2) || (comp > 2))
768 static s32 iwl4965_get_tx_atten_grp(u16 channel)
770 if (channel >= CALIB_IWL_TX_ATTEN_GR5_FCH &&
771 channel <= CALIB_IWL_TX_ATTEN_GR5_LCH)
772 return CALIB_CH_GROUP_5;
774 if (channel >= CALIB_IWL_TX_ATTEN_GR1_FCH &&
775 channel <= CALIB_IWL_TX_ATTEN_GR1_LCH)
776 return CALIB_CH_GROUP_1;
778 if (channel >= CALIB_IWL_TX_ATTEN_GR2_FCH &&
779 channel <= CALIB_IWL_TX_ATTEN_GR2_LCH)
780 return CALIB_CH_GROUP_2;
782 if (channel >= CALIB_IWL_TX_ATTEN_GR3_FCH &&
783 channel <= CALIB_IWL_TX_ATTEN_GR3_LCH)
784 return CALIB_CH_GROUP_3;
786 if (channel >= CALIB_IWL_TX_ATTEN_GR4_FCH &&
787 channel <= CALIB_IWL_TX_ATTEN_GR4_LCH)
788 return CALIB_CH_GROUP_4;
793 static u32 iwl4965_get_sub_band(const struct iwl_priv *priv, u32 channel)
797 for (b = 0; b < EEPROM_TX_POWER_BANDS; b++) {
798 if (priv->calib_info->band_info[b].ch_from == 0)
801 if ((channel >= priv->calib_info->band_info[b].ch_from)
802 && (channel <= priv->calib_info->band_info[b].ch_to))
809 static s32 iwl4965_interpolate_value(s32 x, s32 x1, s32 y1, s32 x2, s32 y2)
816 iwl4965_math_div_round((x2 - x) * (y1 - y2), (x2 - x1), &val);
822 * iwl4965_interpolate_chan - Interpolate factory measurements for one channel
824 * Interpolates factory measurements from the two sample channels within a
825 * sub-band, to apply to channel of interest. Interpolation is proportional to
826 * differences in channel frequencies, which is proportional to differences
829 static int iwl4965_interpolate_chan(struct iwl_priv *priv, u32 channel,
830 struct iwl_eeprom_calib_ch_info *chan_info)
835 const struct iwl_eeprom_calib_measure *m1;
836 const struct iwl_eeprom_calib_measure *m2;
837 struct iwl_eeprom_calib_measure *omeas;
841 s = iwl4965_get_sub_band(priv, channel);
842 if (s >= EEPROM_TX_POWER_BANDS) {
843 IWL_ERR(priv, "Tx Power can not find channel %d\n", channel);
847 ch_i1 = priv->calib_info->band_info[s].ch1.ch_num;
848 ch_i2 = priv->calib_info->band_info[s].ch2.ch_num;
849 chan_info->ch_num = (u8) channel;
851 IWL_DEBUG_TXPOWER(priv, "channel %d subband %d factory cal ch %d & %d\n",
852 channel, s, ch_i1, ch_i2);
854 for (c = 0; c < EEPROM_TX_POWER_TX_CHAINS; c++) {
855 for (m = 0; m < EEPROM_TX_POWER_MEASUREMENTS; m++) {
856 m1 = &(priv->calib_info->band_info[s].ch1.
858 m2 = &(priv->calib_info->band_info[s].ch2.
860 omeas = &(chan_info->measurements[c][m]);
863 (u8) iwl4965_interpolate_value(channel, ch_i1,
868 (u8) iwl4965_interpolate_value(channel, ch_i1,
872 (u8) iwl4965_interpolate_value(channel, ch_i1,
877 (s8) iwl4965_interpolate_value(channel, ch_i1,
881 IWL_DEBUG_TXPOWER(priv,
882 "chain %d meas %d AP1=%d AP2=%d AP=%d\n", c, m,
883 m1->actual_pow, m2->actual_pow, omeas->actual_pow);
884 IWL_DEBUG_TXPOWER(priv,
885 "chain %d meas %d NI1=%d NI2=%d NI=%d\n", c, m,
886 m1->gain_idx, m2->gain_idx, omeas->gain_idx);
887 IWL_DEBUG_TXPOWER(priv,
888 "chain %d meas %d PA1=%d PA2=%d PA=%d\n", c, m,
889 m1->pa_det, m2->pa_det, omeas->pa_det);
890 IWL_DEBUG_TXPOWER(priv,
891 "chain %d meas %d T1=%d T2=%d T=%d\n", c, m,
892 m1->temperature, m2->temperature,
900 /* bit-rate-dependent table to prevent Tx distortion, in half-dB units,
901 * for OFDM 6, 12, 18, 24, 36, 48, 54, 60 MBit, and CCK all rates. */
902 static s32 back_off_table[] = {
903 10, 10, 10, 10, 10, 15, 17, 20, /* OFDM SISO 20 MHz */
904 10, 10, 10, 10, 10, 15, 17, 20, /* OFDM MIMO 20 MHz */
905 10, 10, 10, 10, 10, 15, 17, 20, /* OFDM SISO 40 MHz */
906 10, 10, 10, 10, 10, 15, 17, 20, /* OFDM MIMO 40 MHz */
910 /* Thermal compensation values for txpower for various frequency ranges ...
911 * ratios from 3:1 to 4.5:1 of degrees (Celsius) per half-dB gain adjust */
912 static struct iwl4965_txpower_comp_entry {
913 s32 degrees_per_05db_a;
914 s32 degrees_per_05db_a_denom;
915 } tx_power_cmp_tble[CALIB_CH_GROUP_MAX] = {
916 {9, 2}, /* group 0 5.2, ch 34-43 */
917 {4, 1}, /* group 1 5.2, ch 44-70 */
918 {4, 1}, /* group 2 5.2, ch 71-124 */
919 {4, 1}, /* group 3 5.2, ch 125-200 */
920 {3, 1} /* group 4 2.4, ch all */
923 static s32 get_min_power_index(s32 rate_power_index, u32 band)
926 if ((rate_power_index & 7) <= 4)
927 return MIN_TX_GAIN_INDEX_52GHZ_EXT;
929 return MIN_TX_GAIN_INDEX;
937 static const struct gain_entry gain_table[2][108] = {
938 /* 5.2GHz power gain index table */
940 {123, 0x3F}, /* highest txpower */
1049 /* 2.4GHz power gain index table */
1051 {110, 0x3f}, /* highest txpower */
1162 static int iwl4965_fill_txpower_tbl(struct iwl_priv *priv, u8 band, u16 channel,
1163 u8 is_ht40, u8 ctrl_chan_high,
1164 struct iwl4965_tx_power_db *tx_power_tbl)
1166 u8 saturation_power;
1168 s32 user_target_power;
1172 s32 current_regulatory;
1173 s32 txatten_grp = CALIB_CH_GROUP_MAX;
1176 const struct iwl_channel_info *ch_info = NULL;
1177 struct iwl_eeprom_calib_ch_info ch_eeprom_info;
1178 const struct iwl_eeprom_calib_measure *measurement;
1181 s32 voltage_compensation;
1182 s32 degrees_per_05db_num;
1183 s32 degrees_per_05db_denom;
1185 s32 temperature_comp[2];
1186 s32 factory_gain_index[2];
1187 s32 factory_actual_pwr[2];
1190 /* tx_power_user_lmt is in dBm, convert to half-dBm (half-dB units
1191 * are used for indexing into txpower table) */
1192 user_target_power = 2 * priv->tx_power_user_lmt;
1194 /* Get current (RXON) channel, band, width */
1195 IWL_DEBUG_TXPOWER(priv, "chan %d band %d is_ht40 %d\n", channel, band,
1198 ch_info = iwl_get_channel_info(priv, priv->band, channel);
1200 if (!is_channel_valid(ch_info))
1203 /* get txatten group, used to select 1) thermal txpower adjustment
1204 * and 2) mimo txpower balance between Tx chains. */
1205 txatten_grp = iwl4965_get_tx_atten_grp(channel);
1206 if (txatten_grp < 0) {
1207 IWL_ERR(priv, "Can't find txatten group for channel %d.\n",
1212 IWL_DEBUG_TXPOWER(priv, "channel %d belongs to txatten group %d\n",
1213 channel, txatten_grp);
1222 /* hardware txpower limits ...
1223 * saturation (clipping distortion) txpowers are in half-dBm */
1225 saturation_power = priv->calib_info->saturation_power24;
1227 saturation_power = priv->calib_info->saturation_power52;
1229 if (saturation_power < IWL_TX_POWER_SATURATION_MIN ||
1230 saturation_power > IWL_TX_POWER_SATURATION_MAX) {
1232 saturation_power = IWL_TX_POWER_DEFAULT_SATURATION_24;
1234 saturation_power = IWL_TX_POWER_DEFAULT_SATURATION_52;
1237 /* regulatory txpower limits ... reg_limit values are in half-dBm,
1238 * max_power_avg values are in dBm, convert * 2 */
1240 reg_limit = ch_info->ht40_max_power_avg * 2;
1242 reg_limit = ch_info->max_power_avg * 2;
1244 if ((reg_limit < IWL_TX_POWER_REGULATORY_MIN) ||
1245 (reg_limit > IWL_TX_POWER_REGULATORY_MAX)) {
1247 reg_limit = IWL_TX_POWER_DEFAULT_REGULATORY_24;
1249 reg_limit = IWL_TX_POWER_DEFAULT_REGULATORY_52;
1252 /* Interpolate txpower calibration values for this channel,
1253 * based on factory calibration tests on spaced channels. */
1254 iwl4965_interpolate_chan(priv, channel, &ch_eeprom_info);
1256 /* calculate tx gain adjustment based on power supply voltage */
1257 voltage = priv->calib_info->voltage;
1258 init_voltage = (s32)le32_to_cpu(priv->card_alive_init.voltage);
1259 voltage_compensation =
1260 iwl4965_get_voltage_compensation(voltage, init_voltage);
1262 IWL_DEBUG_TXPOWER(priv, "curr volt %d eeprom volt %d volt comp %d\n",
1264 voltage, voltage_compensation);
1266 /* get current temperature (Celsius) */
1267 current_temp = max(priv->temperature, IWL_TX_POWER_TEMPERATURE_MIN);
1268 current_temp = min(priv->temperature, IWL_TX_POWER_TEMPERATURE_MAX);
1269 current_temp = KELVIN_TO_CELSIUS(current_temp);
1271 /* select thermal txpower adjustment params, based on channel group
1272 * (same frequency group used for mimo txatten adjustment) */
1273 degrees_per_05db_num =
1274 tx_power_cmp_tble[txatten_grp].degrees_per_05db_a;
1275 degrees_per_05db_denom =
1276 tx_power_cmp_tble[txatten_grp].degrees_per_05db_a_denom;
1278 /* get per-chain txpower values from factory measurements */
1279 for (c = 0; c < 2; c++) {
1280 measurement = &ch_eeprom_info.measurements[c][1];
1282 /* txgain adjustment (in half-dB steps) based on difference
1283 * between factory and current temperature */
1284 factory_temp = measurement->temperature;
1285 iwl4965_math_div_round((current_temp - factory_temp) *
1286 degrees_per_05db_denom,
1287 degrees_per_05db_num,
1288 &temperature_comp[c]);
1290 factory_gain_index[c] = measurement->gain_idx;
1291 factory_actual_pwr[c] = measurement->actual_pow;
1293 IWL_DEBUG_TXPOWER(priv, "chain = %d\n", c);
1294 IWL_DEBUG_TXPOWER(priv, "fctry tmp %d, "
1295 "curr tmp %d, comp %d steps\n",
1296 factory_temp, current_temp,
1297 temperature_comp[c]);
1299 IWL_DEBUG_TXPOWER(priv, "fctry idx %d, fctry pwr %d\n",
1300 factory_gain_index[c],
1301 factory_actual_pwr[c]);
1304 /* for each of 33 bit-rates (including 1 for CCK) */
1305 for (i = 0; i < POWER_TABLE_NUM_ENTRIES; i++) {
1307 union iwl4965_tx_power_dual_stream tx_power;
1309 /* for mimo, reduce each chain's txpower by half
1310 * (3dB, 6 steps), so total output power is regulatory
1313 current_regulatory = reg_limit -
1314 IWL_TX_POWER_MIMO_REGULATORY_COMPENSATION;
1317 current_regulatory = reg_limit;
1321 /* find txpower limit, either hardware or regulatory */
1322 power_limit = saturation_power - back_off_table[i];
1323 if (power_limit > current_regulatory)
1324 power_limit = current_regulatory;
1326 /* reduce user's txpower request if necessary
1327 * for this rate on this channel */
1328 target_power = user_target_power;
1329 if (target_power > power_limit)
1330 target_power = power_limit;
1332 IWL_DEBUG_TXPOWER(priv, "rate %d sat %d reg %d usr %d tgt %d\n",
1333 i, saturation_power - back_off_table[i],
1334 current_regulatory, user_target_power,
1337 /* for each of 2 Tx chains (radio transmitters) */
1338 for (c = 0; c < 2; c++) {
1343 (s32)le32_to_cpu(priv->card_alive_init.
1344 tx_atten[txatten_grp][c]);
1348 /* calculate index; higher index means lower txpower */
1349 power_index = (u8) (factory_gain_index[c] -
1351 factory_actual_pwr[c]) -
1352 temperature_comp[c] -
1353 voltage_compensation +
1356 /* IWL_DEBUG_TXPOWER(priv, "calculated txpower index %d\n",
1359 if (power_index < get_min_power_index(i, band))
1360 power_index = get_min_power_index(i, band);
1362 /* adjust 5 GHz index to support negative indexes */
1366 /* CCK, rate 32, reduce txpower for CCK */
1367 if (i == POWER_TABLE_CCK_ENTRY)
1369 IWL_TX_POWER_CCK_COMPENSATION_C_STEP;
1371 /* stay within the table! */
1372 if (power_index > 107) {
1373 IWL_WARN(priv, "txpower index %d > 107\n",
1377 if (power_index < 0) {
1378 IWL_WARN(priv, "txpower index %d < 0\n",
1383 /* fill txpower command for this rate/chain */
1384 tx_power.s.radio_tx_gain[c] =
1385 gain_table[band][power_index].radio;
1386 tx_power.s.dsp_predis_atten[c] =
1387 gain_table[band][power_index].dsp;
1389 IWL_DEBUG_TXPOWER(priv, "chain %d mimo %d index %d "
1390 "gain 0x%02x dsp %d\n",
1391 c, atten_value, power_index,
1392 tx_power.s.radio_tx_gain[c],
1393 tx_power.s.dsp_predis_atten[c]);
1394 } /* for each chain */
1396 tx_power_tbl->power_tbl[i].dw = cpu_to_le32(tx_power.dw);
1398 } /* for each rate */
1404 * iwl4965_send_tx_power - Configure the TXPOWER level user limit
1406 * Uses the active RXON for channel, band, and characteristics (ht40, high)
1407 * The power limit is taken from priv->tx_power_user_lmt.
1409 static int iwl4965_send_tx_power(struct iwl_priv *priv)
1411 struct iwl4965_txpowertable_cmd cmd = { 0 };
1414 bool is_ht40 = false;
1415 u8 ctrl_chan_high = 0;
1417 if (test_bit(STATUS_SCANNING, &priv->status)) {
1418 /* If this gets hit a lot, switch it to a BUG() and catch
1419 * the stack trace to find out who is calling this during
1421 IWL_WARN(priv, "TX Power requested while scanning!\n");
1425 band = priv->band == IEEE80211_BAND_2GHZ;
1427 is_ht40 = is_ht40_channel(priv->active_rxon.flags);
1430 (priv->active_rxon.flags & RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK))
1434 cmd.channel = priv->active_rxon.channel;
1436 ret = iwl4965_fill_txpower_tbl(priv, band,
1437 le16_to_cpu(priv->active_rxon.channel),
1438 is_ht40, ctrl_chan_high, &cmd.tx_power);
1442 ret = iwl_send_cmd_pdu(priv, REPLY_TX_PWR_TABLE_CMD, sizeof(cmd), &cmd);
1448 static int iwl4965_send_rxon_assoc(struct iwl_priv *priv)
1451 struct iwl4965_rxon_assoc_cmd rxon_assoc;
1452 const struct iwl_rxon_cmd *rxon1 = &priv->staging_rxon;
1453 const struct iwl_rxon_cmd *rxon2 = &priv->active_rxon;
1455 if ((rxon1->flags == rxon2->flags) &&
1456 (rxon1->filter_flags == rxon2->filter_flags) &&
1457 (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
1458 (rxon1->ofdm_ht_single_stream_basic_rates ==
1459 rxon2->ofdm_ht_single_stream_basic_rates) &&
1460 (rxon1->ofdm_ht_dual_stream_basic_rates ==
1461 rxon2->ofdm_ht_dual_stream_basic_rates) &&
1462 (rxon1->rx_chain == rxon2->rx_chain) &&
1463 (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
1464 IWL_DEBUG_INFO(priv, "Using current RXON_ASSOC. Not resending.\n");
1468 rxon_assoc.flags = priv->staging_rxon.flags;
1469 rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
1470 rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
1471 rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
1472 rxon_assoc.reserved = 0;
1473 rxon_assoc.ofdm_ht_single_stream_basic_rates =
1474 priv->staging_rxon.ofdm_ht_single_stream_basic_rates;
1475 rxon_assoc.ofdm_ht_dual_stream_basic_rates =
1476 priv->staging_rxon.ofdm_ht_dual_stream_basic_rates;
1477 rxon_assoc.rx_chain_select_flags = priv->staging_rxon.rx_chain;
1479 ret = iwl_send_cmd_pdu_async(priv, REPLY_RXON_ASSOC,
1480 sizeof(rxon_assoc), &rxon_assoc, NULL);
1487 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
1488 static int iwl4965_hw_channel_switch(struct iwl_priv *priv, u16 channel)
1492 bool is_ht40 = false;
1493 u8 ctrl_chan_high = 0;
1494 struct iwl4965_channel_switch_cmd cmd = { 0 };
1495 const struct iwl_channel_info *ch_info;
1497 band = priv->band == IEEE80211_BAND_2GHZ;
1499 ch_info = iwl_get_channel_info(priv, priv->band, channel);
1501 is_ht40 = is_ht40_channel(priv->staging_rxon.flags);
1504 (priv->active_rxon.flags & RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK))
1508 cmd.expect_beacon = 0;
1509 cmd.channel = cpu_to_le16(channel);
1510 cmd.rxon_flags = priv->active_rxon.flags;
1511 cmd.rxon_filter_flags = priv->active_rxon.filter_flags;
1512 cmd.switch_time = cpu_to_le32(priv->ucode_beacon_time);
1514 cmd.expect_beacon = is_channel_radar(ch_info);
1516 cmd.expect_beacon = 1;
1518 rc = iwl4965_fill_txpower_tbl(priv, band, channel, is_ht40,
1519 ctrl_chan_high, &cmd.tx_power);
1521 IWL_DEBUG_11H(priv, "error:%d fill txpower_tbl\n", rc);
1525 rc = iwl_send_cmd_pdu(priv, REPLY_CHANNEL_SWITCH, sizeof(cmd), &cmd);
1531 * iwl4965_txq_update_byte_cnt_tbl - Set up entry in Tx byte-count array
1533 static void iwl4965_txq_update_byte_cnt_tbl(struct iwl_priv *priv,
1534 struct iwl_tx_queue *txq,
1537 struct iwl4965_scd_bc_tbl *scd_bc_tbl = priv->scd_bc_tbls.addr;
1538 int txq_id = txq->q.id;
1539 int write_ptr = txq->q.write_ptr;
1540 int len = byte_cnt + IWL_TX_CRC_SIZE + IWL_TX_DELIMITER_SIZE;
1543 WARN_ON(len > 0xFFF || write_ptr >= TFD_QUEUE_SIZE_MAX);
1545 bc_ent = cpu_to_le16(len & 0xFFF);
1546 /* Set up byte count within first 256 entries */
1547 scd_bc_tbl[txq_id].tfd_offset[write_ptr] = bc_ent;
1549 /* If within first 64 entries, duplicate at end */
1550 if (write_ptr < TFD_QUEUE_SIZE_BC_DUP)
1552 tfd_offset[TFD_QUEUE_SIZE_MAX + write_ptr] = bc_ent;
1556 * sign_extend - Sign extend a value using specified bit as sign-bit
1558 * Example: sign_extend(9, 3) would return -7 as bit3 of 1001b is 1
1559 * and bit0..2 is 001b which when sign extended to 1111111111111001b is -7.
1561 * @param oper value to sign extend
1562 * @param index 0 based bit index (0<=index<32) to sign bit
1564 static s32 sign_extend(u32 oper, int index)
1566 u8 shift = 31 - index;
1568 return (s32)(oper << shift) >> shift;
1572 * iwl4965_hw_get_temperature - return the calibrated temperature (in Kelvin)
1573 * @statistics: Provides the temperature reading from the uCode
1575 * A return of <0 indicates bogus data in the statistics
1577 static int iwl4965_hw_get_temperature(struct iwl_priv *priv)
1584 if (test_bit(STATUS_TEMPERATURE, &priv->status) &&
1585 (priv->statistics.flag & STATISTICS_REPLY_FLG_HT40_MODE_MSK)) {
1586 IWL_DEBUG_TEMP(priv, "Running HT40 temperature calibration\n");
1587 R1 = (s32)le32_to_cpu(priv->card_alive_init.therm_r1[1]);
1588 R2 = (s32)le32_to_cpu(priv->card_alive_init.therm_r2[1]);
1589 R3 = (s32)le32_to_cpu(priv->card_alive_init.therm_r3[1]);
1590 R4 = le32_to_cpu(priv->card_alive_init.therm_r4[1]);
1592 IWL_DEBUG_TEMP(priv, "Running temperature calibration\n");
1593 R1 = (s32)le32_to_cpu(priv->card_alive_init.therm_r1[0]);
1594 R2 = (s32)le32_to_cpu(priv->card_alive_init.therm_r2[0]);
1595 R3 = (s32)le32_to_cpu(priv->card_alive_init.therm_r3[0]);
1596 R4 = le32_to_cpu(priv->card_alive_init.therm_r4[0]);
1600 * Temperature is only 23 bits, so sign extend out to 32.
1602 * NOTE If we haven't received a statistics notification yet
1603 * with an updated temperature, use R4 provided to us in the
1604 * "initialize" ALIVE response.
1606 if (!test_bit(STATUS_TEMPERATURE, &priv->status))
1607 vt = sign_extend(R4, 23);
1610 le32_to_cpu(priv->statistics.general.temperature), 23);
1612 IWL_DEBUG_TEMP(priv, "Calib values R[1-3]: %d %d %d R4: %d\n", R1, R2, R3, vt);
1615 IWL_ERR(priv, "Calibration conflict R1 == R3\n");
1619 /* Calculate temperature in degrees Kelvin, adjust by 97%.
1620 * Add offset to center the adjustment around 0 degrees Centigrade. */
1621 temperature = TEMPERATURE_CALIB_A_VAL * (vt - R2);
1622 temperature /= (R3 - R1);
1623 temperature = (temperature * 97) / 100 + TEMPERATURE_CALIB_KELVIN_OFFSET;
1625 IWL_DEBUG_TEMP(priv, "Calibrated temperature: %dK, %dC\n",
1626 temperature, KELVIN_TO_CELSIUS(temperature));
1631 /* Adjust Txpower only if temperature variance is greater than threshold. */
1632 #define IWL_TEMPERATURE_THRESHOLD 3
1635 * iwl4965_is_temp_calib_needed - determines if new calibration is needed
1637 * If the temperature changed has changed sufficiently, then a recalibration
1640 * Assumes caller will replace priv->last_temperature once calibration
1643 static int iwl4965_is_temp_calib_needed(struct iwl_priv *priv)
1647 if (!test_bit(STATUS_STATISTICS, &priv->status)) {
1648 IWL_DEBUG_TEMP(priv, "Temperature not updated -- no statistics.\n");
1652 temp_diff = priv->temperature - priv->last_temperature;
1654 /* get absolute value */
1655 if (temp_diff < 0) {
1656 IWL_DEBUG_POWER(priv, "Getting cooler, delta %d, \n", temp_diff);
1657 temp_diff = -temp_diff;
1658 } else if (temp_diff == 0)
1659 IWL_DEBUG_POWER(priv, "Same temp, \n");
1661 IWL_DEBUG_POWER(priv, "Getting warmer, delta %d, \n", temp_diff);
1663 if (temp_diff < IWL_TEMPERATURE_THRESHOLD) {
1664 IWL_DEBUG_POWER(priv, "Thermal txpower calib not needed\n");
1668 IWL_DEBUG_POWER(priv, "Thermal txpower calib needed\n");
1673 static void iwl4965_temperature_calib(struct iwl_priv *priv)
1677 temp = iwl4965_hw_get_temperature(priv);
1681 if (priv->temperature != temp) {
1682 if (priv->temperature)
1683 IWL_DEBUG_TEMP(priv, "Temperature changed "
1684 "from %dC to %dC\n",
1685 KELVIN_TO_CELSIUS(priv->temperature),
1686 KELVIN_TO_CELSIUS(temp));
1688 IWL_DEBUG_TEMP(priv, "Temperature "
1689 "initialized to %dC\n",
1690 KELVIN_TO_CELSIUS(temp));
1693 priv->temperature = temp;
1694 iwl_tt_handler(priv);
1695 set_bit(STATUS_TEMPERATURE, &priv->status);
1697 if (!priv->disable_tx_power_cal &&
1698 unlikely(!test_bit(STATUS_SCANNING, &priv->status)) &&
1699 iwl4965_is_temp_calib_needed(priv))
1700 queue_work(priv->workqueue, &priv->txpower_work);
1704 * iwl4965_tx_queue_stop_scheduler - Stop queue, but keep configuration
1706 static void iwl4965_tx_queue_stop_scheduler(struct iwl_priv *priv,
1709 /* Simply stop the queue, but don't change any configuration;
1710 * the SCD_ACT_EN bit is the write-enable mask for the ACTIVE bit. */
1711 iwl_write_prph(priv,
1712 IWL49_SCD_QUEUE_STATUS_BITS(txq_id),
1713 (0 << IWL49_SCD_QUEUE_STTS_REG_POS_ACTIVE)|
1714 (1 << IWL49_SCD_QUEUE_STTS_REG_POS_SCD_ACT_EN));
1718 * txq_id must be greater than IWL49_FIRST_AMPDU_QUEUE
1719 * priv->lock must be held by the caller
1721 static int iwl4965_txq_agg_disable(struct iwl_priv *priv, u16 txq_id,
1722 u16 ssn_idx, u8 tx_fifo)
1724 if ((IWL49_FIRST_AMPDU_QUEUE > txq_id) ||
1725 (IWL49_FIRST_AMPDU_QUEUE + priv->cfg->num_of_ampdu_queues
1728 "queue number out of range: %d, must be %d to %d\n",
1729 txq_id, IWL49_FIRST_AMPDU_QUEUE,
1730 IWL49_FIRST_AMPDU_QUEUE +
1731 priv->cfg->num_of_ampdu_queues - 1);
1735 iwl4965_tx_queue_stop_scheduler(priv, txq_id);
1737 iwl_clear_bits_prph(priv, IWL49_SCD_QUEUECHAIN_SEL, (1 << txq_id));
1739 priv->txq[txq_id].q.read_ptr = (ssn_idx & 0xff);
1740 priv->txq[txq_id].q.write_ptr = (ssn_idx & 0xff);
1741 /* supposes that ssn_idx is valid (!= 0xFFF) */
1742 iwl4965_set_wr_ptrs(priv, txq_id, ssn_idx);
1744 iwl_clear_bits_prph(priv, IWL49_SCD_INTERRUPT_MASK, (1 << txq_id));
1745 iwl_txq_ctx_deactivate(priv, txq_id);
1746 iwl4965_tx_queue_set_status(priv, &priv->txq[txq_id], tx_fifo, 0);
1752 * iwl4965_tx_queue_set_q2ratid - Map unique receiver/tid combination to a queue
1754 static int iwl4965_tx_queue_set_q2ratid(struct iwl_priv *priv, u16 ra_tid,
1761 scd_q2ratid = ra_tid & IWL_SCD_QUEUE_RA_TID_MAP_RATID_MSK;
1763 tbl_dw_addr = priv->scd_base_addr +
1764 IWL49_SCD_TRANSLATE_TBL_OFFSET_QUEUE(txq_id);
1766 tbl_dw = iwl_read_targ_mem(priv, tbl_dw_addr);
1769 tbl_dw = (scd_q2ratid << 16) | (tbl_dw & 0x0000FFFF);
1771 tbl_dw = scd_q2ratid | (tbl_dw & 0xFFFF0000);
1773 iwl_write_targ_mem(priv, tbl_dw_addr, tbl_dw);
1780 * iwl4965_tx_queue_agg_enable - Set up & enable aggregation for selected queue
1782 * NOTE: txq_id must be greater than IWL49_FIRST_AMPDU_QUEUE,
1783 * i.e. it must be one of the higher queues used for aggregation
1785 static int iwl4965_txq_agg_enable(struct iwl_priv *priv, int txq_id,
1786 int tx_fifo, int sta_id, int tid, u16 ssn_idx)
1788 unsigned long flags;
1791 if ((IWL49_FIRST_AMPDU_QUEUE > txq_id) ||
1792 (IWL49_FIRST_AMPDU_QUEUE + priv->cfg->num_of_ampdu_queues
1795 "queue number out of range: %d, must be %d to %d\n",
1796 txq_id, IWL49_FIRST_AMPDU_QUEUE,
1797 IWL49_FIRST_AMPDU_QUEUE +
1798 priv->cfg->num_of_ampdu_queues - 1);
1802 ra_tid = BUILD_RAxTID(sta_id, tid);
1804 /* Modify device's station table to Tx this TID */
1805 iwl_sta_tx_modify_enable_tid(priv, sta_id, tid);
1807 spin_lock_irqsave(&priv->lock, flags);
1809 /* Stop this Tx queue before configuring it */
1810 iwl4965_tx_queue_stop_scheduler(priv, txq_id);
1812 /* Map receiver-address / traffic-ID to this queue */
1813 iwl4965_tx_queue_set_q2ratid(priv, ra_tid, txq_id);
1815 /* Set this queue as a chain-building queue */
1816 iwl_set_bits_prph(priv, IWL49_SCD_QUEUECHAIN_SEL, (1 << txq_id));
1818 /* Place first TFD at index corresponding to start sequence number.
1819 * Assumes that ssn_idx is valid (!= 0xFFF) */
1820 priv->txq[txq_id].q.read_ptr = (ssn_idx & 0xff);
1821 priv->txq[txq_id].q.write_ptr = (ssn_idx & 0xff);
1822 iwl4965_set_wr_ptrs(priv, txq_id, ssn_idx);
1824 /* Set up Tx window size and frame limit for this queue */
1825 iwl_write_targ_mem(priv,
1826 priv->scd_base_addr + IWL49_SCD_CONTEXT_QUEUE_OFFSET(txq_id),
1827 (SCD_WIN_SIZE << IWL49_SCD_QUEUE_CTX_REG1_WIN_SIZE_POS) &
1828 IWL49_SCD_QUEUE_CTX_REG1_WIN_SIZE_MSK);
1830 iwl_write_targ_mem(priv, priv->scd_base_addr +
1831 IWL49_SCD_CONTEXT_QUEUE_OFFSET(txq_id) + sizeof(u32),
1832 (SCD_FRAME_LIMIT << IWL49_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_POS)
1833 & IWL49_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_MSK);
1835 iwl_set_bits_prph(priv, IWL49_SCD_INTERRUPT_MASK, (1 << txq_id));
1837 /* Set up Status area in SRAM, map to Tx DMA/FIFO, activate the queue */
1838 iwl4965_tx_queue_set_status(priv, &priv->txq[txq_id], tx_fifo, 1);
1840 spin_unlock_irqrestore(&priv->lock, flags);
1846 static u16 iwl4965_get_hcmd_size(u8 cmd_id, u16 len)
1850 return (u16) sizeof(struct iwl4965_rxon_cmd);
1856 static u16 iwl4965_build_addsta_hcmd(const struct iwl_addsta_cmd *cmd, u8 *data)
1858 struct iwl4965_addsta_cmd *addsta = (struct iwl4965_addsta_cmd *)data;
1859 addsta->mode = cmd->mode;
1860 memcpy(&addsta->sta, &cmd->sta, sizeof(struct sta_id_modify));
1861 memcpy(&addsta->key, &cmd->key, sizeof(struct iwl4965_keyinfo));
1862 addsta->station_flags = cmd->station_flags;
1863 addsta->station_flags_msk = cmd->station_flags_msk;
1864 addsta->tid_disable_tx = cmd->tid_disable_tx;
1865 addsta->add_immediate_ba_tid = cmd->add_immediate_ba_tid;
1866 addsta->remove_immediate_ba_tid = cmd->remove_immediate_ba_tid;
1867 addsta->add_immediate_ba_ssn = cmd->add_immediate_ba_ssn;
1868 addsta->reserved1 = cpu_to_le16(0);
1869 addsta->reserved2 = cpu_to_le32(0);
1871 return (u16)sizeof(struct iwl4965_addsta_cmd);
1874 static inline u32 iwl4965_get_scd_ssn(struct iwl4965_tx_resp *tx_resp)
1876 return le32_to_cpup(&tx_resp->u.status + tx_resp->frame_count) & MAX_SN;
1880 * iwl4965_tx_status_reply_tx - Handle Tx response for frames in aggregation queue
1882 static int iwl4965_tx_status_reply_tx(struct iwl_priv *priv,
1883 struct iwl_ht_agg *agg,
1884 struct iwl4965_tx_resp *tx_resp,
1885 int txq_id, u16 start_idx)
1888 struct agg_tx_status *frame_status = tx_resp->u.agg_status;
1889 struct ieee80211_tx_info *info = NULL;
1890 struct ieee80211_hdr *hdr = NULL;
1891 u32 rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
1894 if (agg->wait_for_ba)
1895 IWL_DEBUG_TX_REPLY(priv, "got tx response w/o block-ack\n");
1897 agg->frame_count = tx_resp->frame_count;
1898 agg->start_idx = start_idx;
1899 agg->rate_n_flags = rate_n_flags;
1902 /* num frames attempted by Tx command */
1903 if (agg->frame_count == 1) {
1904 /* Only one frame was attempted; no block-ack will arrive */
1905 status = le16_to_cpu(frame_status[0].status);
1908 /* FIXME: code repetition */
1909 IWL_DEBUG_TX_REPLY(priv, "FrameCnt = %d, StartIdx=%d idx=%d\n",
1910 agg->frame_count, agg->start_idx, idx);
1912 info = IEEE80211_SKB_CB(priv->txq[txq_id].txb[idx].skb[0]);
1913 info->status.rates[0].count = tx_resp->failure_frame + 1;
1914 info->flags &= ~IEEE80211_TX_CTL_AMPDU;
1915 info->flags |= iwl_is_tx_success(status) ?
1916 IEEE80211_TX_STAT_ACK : 0;
1917 iwl_hwrate_to_tx_control(priv, rate_n_flags, info);
1918 /* FIXME: code repetition end */
1920 IWL_DEBUG_TX_REPLY(priv, "1 Frame 0x%x failure :%d\n",
1921 status & 0xff, tx_resp->failure_frame);
1922 IWL_DEBUG_TX_REPLY(priv, "Rate Info rate_n_flags=%x\n", rate_n_flags);
1924 agg->wait_for_ba = 0;
1926 /* Two or more frames were attempted; expect block-ack */
1928 int start = agg->start_idx;
1930 /* Construct bit-map of pending frames within Tx window */
1931 for (i = 0; i < agg->frame_count; i++) {
1933 status = le16_to_cpu(frame_status[i].status);
1934 seq = le16_to_cpu(frame_status[i].sequence);
1935 idx = SEQ_TO_INDEX(seq);
1936 txq_id = SEQ_TO_QUEUE(seq);
1938 if (status & (AGG_TX_STATE_FEW_BYTES_MSK |
1939 AGG_TX_STATE_ABORT_MSK))
1942 IWL_DEBUG_TX_REPLY(priv, "FrameCnt = %d, txq_id=%d idx=%d\n",
1943 agg->frame_count, txq_id, idx);
1945 hdr = iwl_tx_queue_get_hdr(priv, txq_id, idx);
1948 "BUG_ON idx doesn't point to valid skb"
1949 " idx=%d, txq_id=%d\n", idx, txq_id);
1953 sc = le16_to_cpu(hdr->seq_ctrl);
1954 if (idx != (SEQ_TO_SN(sc) & 0xff)) {
1956 "BUG_ON idx doesn't match seq control"
1957 " idx=%d, seq_idx=%d, seq=%d\n",
1958 idx, SEQ_TO_SN(sc), hdr->seq_ctrl);
1962 IWL_DEBUG_TX_REPLY(priv, "AGG Frame i=%d idx %d seq=%d\n",
1963 i, idx, SEQ_TO_SN(sc));
1967 sh = (start - idx) + 0xff;
1968 bitmap = bitmap << sh;
1971 } else if (sh < -64)
1972 sh = 0xff - (start - idx);
1976 bitmap = bitmap << sh;
1979 bitmap |= 1ULL << sh;
1980 IWL_DEBUG_TX_REPLY(priv, "start=%d bitmap=0x%llx\n",
1981 start, (unsigned long long)bitmap);
1984 agg->bitmap = bitmap;
1985 agg->start_idx = start;
1986 IWL_DEBUG_TX_REPLY(priv, "Frames %d start_idx=%d bitmap=0x%llx\n",
1987 agg->frame_count, agg->start_idx,
1988 (unsigned long long)agg->bitmap);
1991 agg->wait_for_ba = 1;
1997 * iwl4965_rx_reply_tx - Handle standard (non-aggregation) Tx response
1999 static void iwl4965_rx_reply_tx(struct iwl_priv *priv,
2000 struct iwl_rx_mem_buffer *rxb)
2002 struct iwl_rx_packet *pkt = rxb_addr(rxb);
2003 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
2004 int txq_id = SEQ_TO_QUEUE(sequence);
2005 int index = SEQ_TO_INDEX(sequence);
2006 struct iwl_tx_queue *txq = &priv->txq[txq_id];
2007 struct ieee80211_hdr *hdr;
2008 struct ieee80211_tx_info *info;
2009 struct iwl4965_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
2010 u32 status = le32_to_cpu(tx_resp->u.status);
2011 int tid = MAX_TID_COUNT;
2016 if ((index >= txq->q.n_bd) || (iwl_queue_used(&txq->q, index) == 0)) {
2017 IWL_ERR(priv, "Read index for DMA queue txq_id (%d) index %d "
2018 "is out of range [0-%d] %d %d\n", txq_id,
2019 index, txq->q.n_bd, txq->q.write_ptr,
2024 info = IEEE80211_SKB_CB(txq->txb[txq->q.read_ptr].skb[0]);
2025 memset(&info->status, 0, sizeof(info->status));
2027 hdr = iwl_tx_queue_get_hdr(priv, txq_id, index);
2028 if (ieee80211_is_data_qos(hdr->frame_control)) {
2029 qc = ieee80211_get_qos_ctl(hdr);
2033 sta_id = iwl_get_ra_sta_id(priv, hdr);
2034 if (txq->sched_retry && unlikely(sta_id == IWL_INVALID_STATION)) {
2035 IWL_ERR(priv, "Station not known\n");
2039 if (txq->sched_retry) {
2040 const u32 scd_ssn = iwl4965_get_scd_ssn(tx_resp);
2041 struct iwl_ht_agg *agg = NULL;
2045 agg = &priv->stations[sta_id].tid[tid].agg;
2047 iwl4965_tx_status_reply_tx(priv, agg, tx_resp, txq_id, index);
2049 /* check if BAR is needed */
2050 if ((tx_resp->frame_count == 1) && !iwl_is_tx_success(status))
2051 info->flags |= IEEE80211_TX_STAT_AMPDU_NO_BACK;
2053 if (txq->q.read_ptr != (scd_ssn & 0xff)) {
2054 index = iwl_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd);
2055 IWL_DEBUG_TX_REPLY(priv, "Retry scheduler reclaim scd_ssn "
2056 "%d index %d\n", scd_ssn , index);
2057 freed = iwl_tx_queue_reclaim(priv, txq_id, index);
2058 priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
2060 if (priv->mac80211_registered &&
2061 (iwl_queue_space(&txq->q) > txq->q.low_mark) &&
2062 (agg->state != IWL_EMPTYING_HW_QUEUE_DELBA)) {
2063 if (agg->state == IWL_AGG_OFF)
2064 iwl_wake_queue(priv, txq_id);
2066 iwl_wake_queue(priv, txq->swq_id);
2070 info->status.rates[0].count = tx_resp->failure_frame + 1;
2071 info->flags |= iwl_is_tx_success(status) ?
2072 IEEE80211_TX_STAT_ACK : 0;
2073 iwl_hwrate_to_tx_control(priv,
2074 le32_to_cpu(tx_resp->rate_n_flags),
2077 IWL_DEBUG_TX_REPLY(priv, "TXQ %d status %s (0x%08x) "
2078 "rate_n_flags 0x%x retries %d\n",
2080 iwl_get_tx_fail_reason(status), status,
2081 le32_to_cpu(tx_resp->rate_n_flags),
2082 tx_resp->failure_frame);
2084 freed = iwl_tx_queue_reclaim(priv, txq_id, index);
2085 if (qc && likely(sta_id != IWL_INVALID_STATION))
2086 priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
2088 if (priv->mac80211_registered &&
2089 (iwl_queue_space(&txq->q) > txq->q.low_mark))
2090 iwl_wake_queue(priv, txq_id);
2093 if (qc && likely(sta_id != IWL_INVALID_STATION))
2094 iwl_txq_check_empty(priv, sta_id, tid, txq_id);
2096 if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
2097 IWL_ERR(priv, "TODO: Implement Tx ABORT REQUIRED!!!\n");
2100 static int iwl4965_calc_rssi(struct iwl_priv *priv,
2101 struct iwl_rx_phy_res *rx_resp)
2103 /* data from PHY/DSP regarding signal strength, etc.,
2104 * contents are always there, not configurable by host. */
2105 struct iwl4965_rx_non_cfg_phy *ncphy =
2106 (struct iwl4965_rx_non_cfg_phy *)rx_resp->non_cfg_phy_buf;
2107 u32 agc = (le16_to_cpu(ncphy->agc_info) & IWL49_AGC_DB_MASK)
2108 >> IWL49_AGC_DB_POS;
2110 u32 valid_antennae =
2111 (le16_to_cpu(rx_resp->phy_flags) & IWL49_RX_PHY_FLAGS_ANTENNAE_MASK)
2112 >> IWL49_RX_PHY_FLAGS_ANTENNAE_OFFSET;
2116 /* Find max rssi among 3 possible receivers.
2117 * These values are measured by the digital signal processor (DSP).
2118 * They should stay fairly constant even as the signal strength varies,
2119 * if the radio's automatic gain control (AGC) is working right.
2120 * AGC value (see below) will provide the "interesting" info. */
2121 for (i = 0; i < 3; i++)
2122 if (valid_antennae & (1 << i))
2123 max_rssi = max(ncphy->rssi_info[i << 1], max_rssi);
2125 IWL_DEBUG_STATS(priv, "Rssi In A %d B %d C %d Max %d AGC dB %d\n",
2126 ncphy->rssi_info[0], ncphy->rssi_info[2], ncphy->rssi_info[4],
2129 /* dBm = max_rssi dB - agc dB - constant.
2130 * Higher AGC (higher radio gain) means lower signal. */
2131 return max_rssi - agc - IWL49_RSSI_OFFSET;
2135 /* Set up 4965-specific Rx frame reply handlers */
2136 static void iwl4965_rx_handler_setup(struct iwl_priv *priv)
2138 /* Legacy Rx frames */
2139 priv->rx_handlers[REPLY_RX] = iwl_rx_reply_rx;
2141 priv->rx_handlers[REPLY_TX] = iwl4965_rx_reply_tx;
2144 static void iwl4965_setup_deferred_work(struct iwl_priv *priv)
2146 INIT_WORK(&priv->txpower_work, iwl4965_bg_txpower_work);
2149 static void iwl4965_cancel_deferred_work(struct iwl_priv *priv)
2151 cancel_work_sync(&priv->txpower_work);
2154 #define IWL4965_UCODE_GET(item) \
2155 static u32 iwl4965_ucode_get_##item(const struct iwl_ucode_header *ucode,\
2158 return le32_to_cpu(ucode->u.v1.item); \
2161 static u32 iwl4965_ucode_get_header_size(u32 api_ver)
2163 return UCODE_HEADER_SIZE(1);
2165 static u32 iwl4965_ucode_get_build(const struct iwl_ucode_header *ucode,
2170 static u8 *iwl4965_ucode_get_data(const struct iwl_ucode_header *ucode,
2173 return (u8 *) ucode->u.v1.data;
2176 IWL4965_UCODE_GET(inst_size);
2177 IWL4965_UCODE_GET(data_size);
2178 IWL4965_UCODE_GET(init_size);
2179 IWL4965_UCODE_GET(init_data_size);
2180 IWL4965_UCODE_GET(boot_size);
2182 static struct iwl_hcmd_ops iwl4965_hcmd = {
2183 .rxon_assoc = iwl4965_send_rxon_assoc,
2184 .commit_rxon = iwl_commit_rxon,
2185 .set_rxon_chain = iwl_set_rxon_chain,
2188 static struct iwl_ucode_ops iwl4965_ucode = {
2189 .get_header_size = iwl4965_ucode_get_header_size,
2190 .get_build = iwl4965_ucode_get_build,
2191 .get_inst_size = iwl4965_ucode_get_inst_size,
2192 .get_data_size = iwl4965_ucode_get_data_size,
2193 .get_init_size = iwl4965_ucode_get_init_size,
2194 .get_init_data_size = iwl4965_ucode_get_init_data_size,
2195 .get_boot_size = iwl4965_ucode_get_boot_size,
2196 .get_data = iwl4965_ucode_get_data,
2198 static struct iwl_hcmd_utils_ops iwl4965_hcmd_utils = {
2199 .get_hcmd_size = iwl4965_get_hcmd_size,
2200 .build_addsta_hcmd = iwl4965_build_addsta_hcmd,
2201 .chain_noise_reset = iwl4965_chain_noise_reset,
2202 .gain_computation = iwl4965_gain_computation,
2203 .rts_tx_cmd_flag = iwlcore_rts_tx_cmd_flag,
2204 .calc_rssi = iwl4965_calc_rssi,
2207 static struct iwl_lib_ops iwl4965_lib = {
2208 .set_hw_params = iwl4965_hw_set_hw_params,
2209 .txq_update_byte_cnt_tbl = iwl4965_txq_update_byte_cnt_tbl,
2210 .txq_set_sched = iwl4965_txq_set_sched,
2211 .txq_agg_enable = iwl4965_txq_agg_enable,
2212 .txq_agg_disable = iwl4965_txq_agg_disable,
2213 .txq_attach_buf_to_tfd = iwl_hw_txq_attach_buf_to_tfd,
2214 .txq_free_tfd = iwl_hw_txq_free_tfd,
2215 .txq_init = iwl_hw_tx_queue_init,
2216 .rx_handler_setup = iwl4965_rx_handler_setup,
2217 .setup_deferred_work = iwl4965_setup_deferred_work,
2218 .cancel_deferred_work = iwl4965_cancel_deferred_work,
2219 .is_valid_rtc_data_addr = iwl4965_hw_valid_rtc_data_addr,
2220 .alive_notify = iwl4965_alive_notify,
2221 .init_alive_start = iwl4965_init_alive_start,
2222 .load_ucode = iwl4965_load_bsm,
2223 .dump_nic_event_log = iwl_dump_nic_event_log,
2224 .dump_nic_error_log = iwl_dump_nic_error_log,
2226 .init = iwl4965_apm_init,
2227 .stop = iwl_apm_stop,
2228 .config = iwl4965_nic_config,
2229 .set_pwr_src = iwl_set_pwr_src,
2232 .regulatory_bands = {
2233 EEPROM_REGULATORY_BAND_1_CHANNELS,
2234 EEPROM_REGULATORY_BAND_2_CHANNELS,
2235 EEPROM_REGULATORY_BAND_3_CHANNELS,
2236 EEPROM_REGULATORY_BAND_4_CHANNELS,
2237 EEPROM_REGULATORY_BAND_5_CHANNELS,
2238 EEPROM_4965_REGULATORY_BAND_24_HT40_CHANNELS,
2239 EEPROM_4965_REGULATORY_BAND_52_HT40_CHANNELS
2241 .verify_signature = iwlcore_eeprom_verify_signature,
2242 .acquire_semaphore = iwlcore_eeprom_acquire_semaphore,
2243 .release_semaphore = iwlcore_eeprom_release_semaphore,
2244 .calib_version = iwl4965_eeprom_calib_version,
2245 .query_addr = iwlcore_eeprom_query_addr,
2247 .send_tx_power = iwl4965_send_tx_power,
2248 .update_chain_flags = iwl_update_chain_flags,
2249 .post_associate = iwl_post_associate,
2250 .config_ap = iwl_config_ap,
2251 .isr = iwl_isr_legacy,
2253 .temperature = iwl4965_temperature_calib,
2254 .set_ct_kill = iwl4965_set_ct_threshold,
2258 static struct iwl_ops iwl4965_ops = {
2259 .ucode = &iwl4965_ucode,
2260 .lib = &iwl4965_lib,
2261 .hcmd = &iwl4965_hcmd,
2262 .utils = &iwl4965_hcmd_utils,
2263 .led = &iwlagn_led_ops,
2266 struct iwl_cfg iwl4965_agn_cfg = {
2268 .fw_name_pre = IWL4965_FW_PRE,
2269 .ucode_api_max = IWL4965_UCODE_API_MAX,
2270 .ucode_api_min = IWL4965_UCODE_API_MIN,
2271 .sku = IWL_SKU_A|IWL_SKU_G|IWL_SKU_N,
2272 .eeprom_size = IWL4965_EEPROM_IMG_SIZE,
2273 .eeprom_ver = EEPROM_4965_EEPROM_VERSION,
2274 .eeprom_calib_ver = EEPROM_4965_TX_POWER_VERSION,
2275 .ops = &iwl4965_ops,
2276 .num_of_queues = IWL49_NUM_QUEUES,
2277 .num_of_ampdu_queues = IWL49_NUM_AMPDU_QUEUES,
2278 .mod_params = &iwl4965_mod_params,
2279 .use_isr_legacy = true,
2280 .ht_greenfield_support = false,
2281 .broken_powersave = true,
2282 .led_compensation = 61,
2283 .chain_noise_num_beacons = IWL4965_CAL_NUM_BEACONS,
2286 /* Module firmware */
2287 MODULE_FIRMWARE(IWL4965_MODULE_FIRMWARE(IWL4965_UCODE_API_MAX));
2289 module_param_named(antenna, iwl4965_mod_params.antenna, int, S_IRUGO);
2290 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
2291 module_param_named(swcrypto, iwl4965_mod_params.sw_crypto, int, S_IRUGO);
2292 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
2294 disable_hw_scan, iwl4965_mod_params.disable_hw_scan, int, S_IRUGO);
2295 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
2297 module_param_named(queues_num, iwl4965_mod_params.num_of_queues, int, S_IRUGO);
2298 MODULE_PARM_DESC(queues_num, "number of hw queues.");
2300 module_param_named(11n_disable, iwl4965_mod_params.disable_11n, int, S_IRUGO);
2301 MODULE_PARM_DESC(11n_disable, "disable 11n functionality");
2302 module_param_named(amsdu_size_8K, iwl4965_mod_params.amsdu_size_8K,
2304 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
2306 module_param_named(fw_restart4965, iwl4965_mod_params.restart_fw, int, S_IRUGO);
2307 MODULE_PARM_DESC(fw_restart4965, "restart firmware in case of error");