iwlwifi: Constify struct iwl_ops
[linux-2.6.git] / drivers / net / wireless / iwlwifi / iwl-4965.c
1 /******************************************************************************
2  *
3  * Copyright(c) 2003 - 2009 Intel Corporation. All rights reserved.
4  *
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.
8  *
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
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15  * this program; if not, write to the Free Software Foundation, Inc.,
16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
17  *
18  * The full GNU General Public License is included in this distribution in the
19  * file called LICENSE.
20  *
21  * Contact Information:
22  *  Intel Linux Wireless <ilw@linux.intel.com>
23  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
24  *
25  *****************************************************************************/
26
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 <linux/wireless.h>
37 #include <net/mac80211.h>
38 #include <linux/etherdevice.h>
39 #include <asm/unaligned.h>
40
41 #include "iwl-eeprom.h"
42 #include "iwl-dev.h"
43 #include "iwl-core.h"
44 #include "iwl-io.h"
45 #include "iwl-helpers.h"
46 #include "iwl-calib.h"
47 #include "iwl-sta.h"
48 #include "iwl-agn-led.h"
49
50 static int iwl4965_send_tx_power(struct iwl_priv *priv);
51 static int iwl4965_hw_get_temperature(struct iwl_priv *priv);
52
53 /* Highest firmware API version supported */
54 #define IWL4965_UCODE_API_MAX 2
55
56 /* Lowest firmware API version supported */
57 #define IWL4965_UCODE_API_MIN 2
58
59 #define IWL4965_FW_PRE "iwlwifi-4965-"
60 #define _IWL4965_MODULE_FIRMWARE(api) IWL4965_FW_PRE #api ".ucode"
61 #define IWL4965_MODULE_FIRMWARE(api) _IWL4965_MODULE_FIRMWARE(api)
62
63
64 /* module parameters */
65 static struct iwl_mod_params iwl4965_mod_params = {
66         .amsdu_size_8K = 1,
67         .restart_fw = 1,
68         /* the rest are 0 by default */
69 };
70
71 /* check contents of special bootstrap uCode SRAM */
72 static int iwl4965_verify_bsm(struct iwl_priv *priv)
73 {
74         __le32 *image = priv->ucode_boot.v_addr;
75         u32 len = priv->ucode_boot.len;
76         u32 reg;
77         u32 val;
78
79         IWL_DEBUG_INFO(priv, "Begin verify bsm\n");
80
81         /* verify BSM SRAM contents */
82         val = iwl_read_prph(priv, BSM_WR_DWCOUNT_REG);
83         for (reg = BSM_SRAM_LOWER_BOUND;
84              reg < BSM_SRAM_LOWER_BOUND + len;
85              reg += sizeof(u32), image++) {
86                 val = iwl_read_prph(priv, reg);
87                 if (val != le32_to_cpu(*image)) {
88                         IWL_ERR(priv, "BSM uCode verification failed at "
89                                   "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
90                                   BSM_SRAM_LOWER_BOUND,
91                                   reg - BSM_SRAM_LOWER_BOUND, len,
92                                   val, le32_to_cpu(*image));
93                         return -EIO;
94                 }
95         }
96
97         IWL_DEBUG_INFO(priv, "BSM bootstrap uCode image OK\n");
98
99         return 0;
100 }
101
102 /**
103  * iwl4965_load_bsm - Load bootstrap instructions
104  *
105  * BSM operation:
106  *
107  * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
108  * in special SRAM that does not power down during RFKILL.  When powering back
109  * up after power-saving sleeps (or during initial uCode load), the BSM loads
110  * the bootstrap program into the on-board processor, and starts it.
111  *
112  * The bootstrap program loads (via DMA) instructions and data for a new
113  * program from host DRAM locations indicated by the host driver in the
114  * BSM_DRAM_* registers.  Once the new program is loaded, it starts
115  * automatically.
116  *
117  * When initializing the NIC, the host driver points the BSM to the
118  * "initialize" uCode image.  This uCode sets up some internal data, then
119  * notifies host via "initialize alive" that it is complete.
120  *
121  * The host then replaces the BSM_DRAM_* pointer values to point to the
122  * normal runtime uCode instructions and a backup uCode data cache buffer
123  * (filled initially with starting data values for the on-board processor),
124  * then triggers the "initialize" uCode to load and launch the runtime uCode,
125  * which begins normal operation.
126  *
127  * When doing a power-save shutdown, runtime uCode saves data SRAM into
128  * the backup data cache in DRAM before SRAM is powered down.
129  *
130  * When powering back up, the BSM loads the bootstrap program.  This reloads
131  * the runtime uCode instructions and the backup data cache into SRAM,
132  * and re-launches the runtime uCode from where it left off.
133  */
134 static int iwl4965_load_bsm(struct iwl_priv *priv)
135 {
136         __le32 *image = priv->ucode_boot.v_addr;
137         u32 len = priv->ucode_boot.len;
138         dma_addr_t pinst;
139         dma_addr_t pdata;
140         u32 inst_len;
141         u32 data_len;
142         int i;
143         u32 done;
144         u32 reg_offset;
145         int ret;
146
147         IWL_DEBUG_INFO(priv, "Begin load bsm\n");
148
149         priv->ucode_type = UCODE_RT;
150
151         /* make sure bootstrap program is no larger than BSM's SRAM size */
152         if (len > IWL49_MAX_BSM_SIZE)
153                 return -EINVAL;
154
155         /* Tell bootstrap uCode where to find the "Initialize" uCode
156          *   in host DRAM ... host DRAM physical address bits 35:4 for 4965.
157          * NOTE:  iwl_init_alive_start() will replace these values,
158          *        after the "initialize" uCode has run, to point to
159          *        runtime/protocol instructions and backup data cache.
160          */
161         pinst = priv->ucode_init.p_addr >> 4;
162         pdata = priv->ucode_init_data.p_addr >> 4;
163         inst_len = priv->ucode_init.len;
164         data_len = priv->ucode_init_data.len;
165
166         iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
167         iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
168         iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
169         iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
170
171         /* Fill BSM memory with bootstrap instructions */
172         for (reg_offset = BSM_SRAM_LOWER_BOUND;
173              reg_offset < BSM_SRAM_LOWER_BOUND + len;
174              reg_offset += sizeof(u32), image++)
175                 _iwl_write_prph(priv, reg_offset, le32_to_cpu(*image));
176
177         ret = iwl4965_verify_bsm(priv);
178         if (ret)
179                 return ret;
180
181         /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
182         iwl_write_prph(priv, BSM_WR_MEM_SRC_REG, 0x0);
183         iwl_write_prph(priv, BSM_WR_MEM_DST_REG, IWL49_RTC_INST_LOWER_BOUND);
184         iwl_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
185
186         /* Load bootstrap code into instruction SRAM now,
187          *   to prepare to load "initialize" uCode */
188         iwl_write_prph(priv, BSM_WR_CTRL_REG, BSM_WR_CTRL_REG_BIT_START);
189
190         /* Wait for load of bootstrap uCode to finish */
191         for (i = 0; i < 100; i++) {
192                 done = iwl_read_prph(priv, BSM_WR_CTRL_REG);
193                 if (!(done & BSM_WR_CTRL_REG_BIT_START))
194                         break;
195                 udelay(10);
196         }
197         if (i < 100)
198                 IWL_DEBUG_INFO(priv, "BSM write complete, poll %d iterations\n", i);
199         else {
200                 IWL_ERR(priv, "BSM write did not complete!\n");
201                 return -EIO;
202         }
203
204         /* Enable future boot loads whenever power management unit triggers it
205          *   (e.g. when powering back up after power-save shutdown) */
206         iwl_write_prph(priv, BSM_WR_CTRL_REG, BSM_WR_CTRL_REG_BIT_START_EN);
207
208
209         return 0;
210 }
211
212 /**
213  * iwl4965_set_ucode_ptrs - Set uCode address location
214  *
215  * Tell initialization uCode where to find runtime uCode.
216  *
217  * BSM registers initially contain pointers to initialization uCode.
218  * We need to replace them to load runtime uCode inst and data,
219  * and to save runtime data when powering down.
220  */
221 static int iwl4965_set_ucode_ptrs(struct iwl_priv *priv)
222 {
223         dma_addr_t pinst;
224         dma_addr_t pdata;
225         int ret = 0;
226
227         /* bits 35:4 for 4965 */
228         pinst = priv->ucode_code.p_addr >> 4;
229         pdata = priv->ucode_data_backup.p_addr >> 4;
230
231         /* Tell bootstrap uCode where to find image to load */
232         iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
233         iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
234         iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
235                                  priv->ucode_data.len);
236
237         /* Inst byte count must be last to set up, bit 31 signals uCode
238          *   that all new ptr/size info is in place */
239         iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
240                                  priv->ucode_code.len | BSM_DRAM_INST_LOAD);
241         IWL_DEBUG_INFO(priv, "Runtime uCode pointers are set.\n");
242
243         return ret;
244 }
245
246 /**
247  * iwl4965_init_alive_start - Called after REPLY_ALIVE notification received
248  *
249  * Called after REPLY_ALIVE notification received from "initialize" uCode.
250  *
251  * The 4965 "initialize" ALIVE reply contains calibration data for:
252  *   Voltage, temperature, and MIMO tx gain correction, now stored in priv
253  *   (3945 does not contain this data).
254  *
255  * Tell "initialize" uCode to go ahead and load the runtime uCode.
256 */
257 static void iwl4965_init_alive_start(struct iwl_priv *priv)
258 {
259         /* Check alive response for "valid" sign from uCode */
260         if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
261                 /* We had an error bringing up the hardware, so take it
262                  * all the way back down so we can try again */
263                 IWL_DEBUG_INFO(priv, "Initialize Alive failed.\n");
264                 goto restart;
265         }
266
267         /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
268          * This is a paranoid check, because we would not have gotten the
269          * "initialize" alive if code weren't properly loaded.  */
270         if (iwl_verify_ucode(priv)) {
271                 /* Runtime instruction load was bad;
272                  * take it all the way back down so we can try again */
273                 IWL_DEBUG_INFO(priv, "Bad \"initialize\" uCode load.\n");
274                 goto restart;
275         }
276
277         /* Calculate temperature */
278         priv->temperature = iwl4965_hw_get_temperature(priv);
279
280         /* Send pointers to protocol/runtime uCode image ... init code will
281          * load and launch runtime uCode, which will send us another "Alive"
282          * notification. */
283         IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
284         if (iwl4965_set_ucode_ptrs(priv)) {
285                 /* Runtime instruction load won't happen;
286                  * take it all the way back down so we can try again */
287                 IWL_DEBUG_INFO(priv, "Couldn't set up uCode pointers.\n");
288                 goto restart;
289         }
290         return;
291
292 restart:
293         queue_work(priv->workqueue, &priv->restart);
294 }
295
296 static bool is_ht40_channel(__le32 rxon_flags)
297 {
298         int chan_mod = le32_to_cpu(rxon_flags & RXON_FLG_CHANNEL_MODE_MSK)
299                                     >> RXON_FLG_CHANNEL_MODE_POS;
300         return ((chan_mod == CHANNEL_MODE_PURE_40) ||
301                   (chan_mod == CHANNEL_MODE_MIXED));
302 }
303
304 /*
305  * EEPROM handlers
306  */
307 static u16 iwl4965_eeprom_calib_version(struct iwl_priv *priv)
308 {
309         return iwl_eeprom_query16(priv, EEPROM_4965_CALIB_VERSION_OFFSET);
310 }
311
312 /*
313  * Activate/Deactivate Tx DMA/FIFO channels according tx fifos mask
314  * must be called under priv->lock and mac access
315  */
316 static void iwl4965_txq_set_sched(struct iwl_priv *priv, u32 mask)
317 {
318         iwl_write_prph(priv, IWL49_SCD_TXFACT, mask);
319 }
320
321 static void iwl4965_nic_config(struct iwl_priv *priv)
322 {
323         unsigned long flags;
324         u16 radio_cfg;
325
326         spin_lock_irqsave(&priv->lock, flags);
327
328         radio_cfg = iwl_eeprom_query16(priv, EEPROM_RADIO_CONFIG);
329
330         /* write radio config values to register */
331         if (EEPROM_RF_CFG_TYPE_MSK(radio_cfg) == EEPROM_4965_RF_CFG_TYPE_MAX)
332                 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
333                             EEPROM_RF_CFG_TYPE_MSK(radio_cfg) |
334                             EEPROM_RF_CFG_STEP_MSK(radio_cfg) |
335                             EEPROM_RF_CFG_DASH_MSK(radio_cfg));
336
337         /* set CSR_HW_CONFIG_REG for uCode use */
338         iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
339                     CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
340                     CSR_HW_IF_CONFIG_REG_BIT_MAC_SI);
341
342         priv->calib_info = (struct iwl_eeprom_calib_info *)
343                 iwl_eeprom_query_addr(priv, EEPROM_4965_CALIB_TXPOWER_OFFSET);
344
345         spin_unlock_irqrestore(&priv->lock, flags);
346 }
347
348 /* Reset differential Rx gains in NIC to prepare for chain noise calibration.
349  * Called after every association, but this runs only once!
350  *  ... once chain noise is calibrated the first time, it's good forever.  */
351 static void iwl4965_chain_noise_reset(struct iwl_priv *priv)
352 {
353         struct iwl_chain_noise_data *data = &(priv->chain_noise_data);
354
355         if ((data->state == IWL_CHAIN_NOISE_ALIVE) && iwl_is_associated(priv)) {
356                 struct iwl_calib_diff_gain_cmd cmd;
357
358                 memset(&cmd, 0, sizeof(cmd));
359                 cmd.hdr.op_code = IWL_PHY_CALIBRATE_DIFF_GAIN_CMD;
360                 cmd.diff_gain_a = 0;
361                 cmd.diff_gain_b = 0;
362                 cmd.diff_gain_c = 0;
363                 if (iwl_send_cmd_pdu(priv, REPLY_PHY_CALIBRATION_CMD,
364                                  sizeof(cmd), &cmd))
365                         IWL_ERR(priv,
366                                 "Could not send REPLY_PHY_CALIBRATION_CMD\n");
367                 data->state = IWL_CHAIN_NOISE_ACCUMULATE;
368                 IWL_DEBUG_CALIB(priv, "Run chain_noise_calibrate\n");
369         }
370 }
371
372 static void iwl4965_gain_computation(struct iwl_priv *priv,
373                 u32 *average_noise,
374                 u16 min_average_noise_antenna_i,
375                 u32 min_average_noise,
376                 u8 default_chain)
377 {
378         int i, ret;
379         struct iwl_chain_noise_data *data = &priv->chain_noise_data;
380
381         data->delta_gain_code[min_average_noise_antenna_i] = 0;
382
383         for (i = default_chain; i < NUM_RX_CHAINS; i++) {
384                 s32 delta_g = 0;
385
386                 if (!(data->disconn_array[i]) &&
387                     (data->delta_gain_code[i] ==
388                              CHAIN_NOISE_DELTA_GAIN_INIT_VAL)) {
389                         delta_g = average_noise[i] - min_average_noise;
390                         data->delta_gain_code[i] = (u8)((delta_g * 10) / 15);
391                         data->delta_gain_code[i] =
392                                 min(data->delta_gain_code[i],
393                                 (u8) CHAIN_NOISE_MAX_DELTA_GAIN_CODE);
394
395                         data->delta_gain_code[i] =
396                                 (data->delta_gain_code[i] | (1 << 2));
397                 } else {
398                         data->delta_gain_code[i] = 0;
399                 }
400         }
401         IWL_DEBUG_CALIB(priv, "delta_gain_codes: a %d b %d c %d\n",
402                      data->delta_gain_code[0],
403                      data->delta_gain_code[1],
404                      data->delta_gain_code[2]);
405
406         /* Differential gain gets sent to uCode only once */
407         if (!data->radio_write) {
408                 struct iwl_calib_diff_gain_cmd cmd;
409                 data->radio_write = 1;
410
411                 memset(&cmd, 0, sizeof(cmd));
412                 cmd.hdr.op_code = IWL_PHY_CALIBRATE_DIFF_GAIN_CMD;
413                 cmd.diff_gain_a = data->delta_gain_code[0];
414                 cmd.diff_gain_b = data->delta_gain_code[1];
415                 cmd.diff_gain_c = data->delta_gain_code[2];
416                 ret = iwl_send_cmd_pdu(priv, REPLY_PHY_CALIBRATION_CMD,
417                                       sizeof(cmd), &cmd);
418                 if (ret)
419                         IWL_DEBUG_CALIB(priv, "fail sending cmd "
420                                      "REPLY_PHY_CALIBRATION_CMD \n");
421
422                 /* TODO we might want recalculate
423                  * rx_chain in rxon cmd */
424
425                 /* Mark so we run this algo only once! */
426                 data->state = IWL_CHAIN_NOISE_CALIBRATED;
427         }
428         data->chain_noise_a = 0;
429         data->chain_noise_b = 0;
430         data->chain_noise_c = 0;
431         data->chain_signal_a = 0;
432         data->chain_signal_b = 0;
433         data->chain_signal_c = 0;
434         data->beacon_count = 0;
435 }
436
437 static void iwl4965_bg_txpower_work(struct work_struct *work)
438 {
439         struct iwl_priv *priv = container_of(work, struct iwl_priv,
440                         txpower_work);
441
442         /* If a scan happened to start before we got here
443          * then just return; the statistics notification will
444          * kick off another scheduled work to compensate for
445          * any temperature delta we missed here. */
446         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
447             test_bit(STATUS_SCANNING, &priv->status))
448                 return;
449
450         mutex_lock(&priv->mutex);
451
452         /* Regardless of if we are associated, we must reconfigure the
453          * TX power since frames can be sent on non-radar channels while
454          * not associated */
455         iwl4965_send_tx_power(priv);
456
457         /* Update last_temperature to keep is_calib_needed from running
458          * when it isn't needed... */
459         priv->last_temperature = priv->temperature;
460
461         mutex_unlock(&priv->mutex);
462 }
463
464 /*
465  * Acquire priv->lock before calling this function !
466  */
467 static void iwl4965_set_wr_ptrs(struct iwl_priv *priv, int txq_id, u32 index)
468 {
469         iwl_write_direct32(priv, HBUS_TARG_WRPTR,
470                              (index & 0xff) | (txq_id << 8));
471         iwl_write_prph(priv, IWL49_SCD_QUEUE_RDPTR(txq_id), index);
472 }
473
474 /**
475  * iwl4965_tx_queue_set_status - (optionally) start Tx/Cmd queue
476  * @tx_fifo_id: Tx DMA/FIFO channel (range 0-7) that the queue will feed
477  * @scd_retry: (1) Indicates queue will be used in aggregation mode
478  *
479  * NOTE:  Acquire priv->lock before calling this function !
480  */
481 static void iwl4965_tx_queue_set_status(struct iwl_priv *priv,
482                                         struct iwl_tx_queue *txq,
483                                         int tx_fifo_id, int scd_retry)
484 {
485         int txq_id = txq->q.id;
486
487         /* Find out whether to activate Tx queue */
488         int active = test_bit(txq_id, &priv->txq_ctx_active_msk) ? 1 : 0;
489
490         /* Set up and activate */
491         iwl_write_prph(priv, IWL49_SCD_QUEUE_STATUS_BITS(txq_id),
492                          (active << IWL49_SCD_QUEUE_STTS_REG_POS_ACTIVE) |
493                          (tx_fifo_id << IWL49_SCD_QUEUE_STTS_REG_POS_TXF) |
494                          (scd_retry << IWL49_SCD_QUEUE_STTS_REG_POS_WSL) |
495                          (scd_retry << IWL49_SCD_QUEUE_STTS_REG_POS_SCD_ACK) |
496                          IWL49_SCD_QUEUE_STTS_REG_MSK);
497
498         txq->sched_retry = scd_retry;
499
500         IWL_DEBUG_INFO(priv, "%s %s Queue %d on AC %d\n",
501                        active ? "Activate" : "Deactivate",
502                        scd_retry ? "BA" : "AC", txq_id, tx_fifo_id);
503 }
504
505 static const u16 default_queue_to_tx_fifo[] = {
506         IWL_TX_FIFO_AC3,
507         IWL_TX_FIFO_AC2,
508         IWL_TX_FIFO_AC1,
509         IWL_TX_FIFO_AC0,
510         IWL49_CMD_FIFO_NUM,
511         IWL_TX_FIFO_HCCA_1,
512         IWL_TX_FIFO_HCCA_2
513 };
514
515 static int iwl4965_alive_notify(struct iwl_priv *priv)
516 {
517         u32 a;
518         unsigned long flags;
519         int i, chan;
520         u32 reg_val;
521
522         spin_lock_irqsave(&priv->lock, flags);
523
524         /* Clear 4965's internal Tx Scheduler data base */
525         priv->scd_base_addr = iwl_read_prph(priv, IWL49_SCD_SRAM_BASE_ADDR);
526         a = priv->scd_base_addr + IWL49_SCD_CONTEXT_DATA_OFFSET;
527         for (; a < priv->scd_base_addr + IWL49_SCD_TX_STTS_BITMAP_OFFSET; a += 4)
528                 iwl_write_targ_mem(priv, a, 0);
529         for (; a < priv->scd_base_addr + IWL49_SCD_TRANSLATE_TBL_OFFSET; a += 4)
530                 iwl_write_targ_mem(priv, a, 0);
531         for (; a < priv->scd_base_addr +
532                IWL49_SCD_TRANSLATE_TBL_OFFSET_QUEUE(priv->hw_params.max_txq_num); a += 4)
533                 iwl_write_targ_mem(priv, a, 0);
534
535         /* Tel 4965 where to find Tx byte count tables */
536         iwl_write_prph(priv, IWL49_SCD_DRAM_BASE_ADDR,
537                         priv->scd_bc_tbls.dma >> 10);
538
539         /* Enable DMA channel */
540         for (chan = 0; chan < FH49_TCSR_CHNL_NUM ; chan++)
541                 iwl_write_direct32(priv, FH_TCSR_CHNL_TX_CONFIG_REG(chan),
542                                 FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE |
543                                 FH_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_ENABLE);
544
545         /* Update FH chicken bits */
546         reg_val = iwl_read_direct32(priv, FH_TX_CHICKEN_BITS_REG);
547         iwl_write_direct32(priv, FH_TX_CHICKEN_BITS_REG,
548                            reg_val | FH_TX_CHICKEN_BITS_SCD_AUTO_RETRY_EN);
549
550         /* Disable chain mode for all queues */
551         iwl_write_prph(priv, IWL49_SCD_QUEUECHAIN_SEL, 0);
552
553         /* Initialize each Tx queue (including the command queue) */
554         for (i = 0; i < priv->hw_params.max_txq_num; i++) {
555
556                 /* TFD circular buffer read/write indexes */
557                 iwl_write_prph(priv, IWL49_SCD_QUEUE_RDPTR(i), 0);
558                 iwl_write_direct32(priv, HBUS_TARG_WRPTR, 0 | (i << 8));
559
560                 /* Max Tx Window size for Scheduler-ACK mode */
561                 iwl_write_targ_mem(priv, priv->scd_base_addr +
562                                 IWL49_SCD_CONTEXT_QUEUE_OFFSET(i),
563                                 (SCD_WIN_SIZE <<
564                                 IWL49_SCD_QUEUE_CTX_REG1_WIN_SIZE_POS) &
565                                 IWL49_SCD_QUEUE_CTX_REG1_WIN_SIZE_MSK);
566
567                 /* Frame limit */
568                 iwl_write_targ_mem(priv, priv->scd_base_addr +
569                                 IWL49_SCD_CONTEXT_QUEUE_OFFSET(i) +
570                                 sizeof(u32),
571                                 (SCD_FRAME_LIMIT <<
572                                 IWL49_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_POS) &
573                                 IWL49_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_MSK);
574
575         }
576         iwl_write_prph(priv, IWL49_SCD_INTERRUPT_MASK,
577                                  (1 << priv->hw_params.max_txq_num) - 1);
578
579         /* Activate all Tx DMA/FIFO channels */
580         priv->cfg->ops->lib->txq_set_sched(priv, IWL_MASK(0, 6));
581
582         iwl4965_set_wr_ptrs(priv, IWL_CMD_QUEUE_NUM, 0);
583
584         /* Map each Tx/cmd queue to its corresponding fifo */
585         for (i = 0; i < ARRAY_SIZE(default_queue_to_tx_fifo); i++) {
586                 int ac = default_queue_to_tx_fifo[i];
587                 iwl_txq_ctx_activate(priv, i);
588                 iwl4965_tx_queue_set_status(priv, &priv->txq[i], ac, 0);
589         }
590
591         spin_unlock_irqrestore(&priv->lock, flags);
592
593         return 0;
594 }
595
596 static struct iwl_sensitivity_ranges iwl4965_sensitivity = {
597         .min_nrg_cck = 97,
598         .max_nrg_cck = 0, /* not used, set to 0 */
599
600         .auto_corr_min_ofdm = 85,
601         .auto_corr_min_ofdm_mrc = 170,
602         .auto_corr_min_ofdm_x1 = 105,
603         .auto_corr_min_ofdm_mrc_x1 = 220,
604
605         .auto_corr_max_ofdm = 120,
606         .auto_corr_max_ofdm_mrc = 210,
607         .auto_corr_max_ofdm_x1 = 140,
608         .auto_corr_max_ofdm_mrc_x1 = 270,
609
610         .auto_corr_min_cck = 125,
611         .auto_corr_max_cck = 200,
612         .auto_corr_min_cck_mrc = 200,
613         .auto_corr_max_cck_mrc = 400,
614
615         .nrg_th_cck = 100,
616         .nrg_th_ofdm = 100,
617
618         .barker_corr_th_min = 190,
619         .barker_corr_th_min_mrc = 390,
620         .nrg_th_cca = 62,
621 };
622
623 static void iwl4965_set_ct_threshold(struct iwl_priv *priv)
624 {
625         /* want Kelvin */
626         priv->hw_params.ct_kill_threshold =
627                 CELSIUS_TO_KELVIN(CT_KILL_THRESHOLD_LEGACY);
628 }
629
630 /**
631  * iwl4965_hw_set_hw_params
632  *
633  * Called when initializing driver
634  */
635 static int iwl4965_hw_set_hw_params(struct iwl_priv *priv)
636 {
637         if (priv->cfg->mod_params->num_of_queues >= IWL_MIN_NUM_QUEUES &&
638             priv->cfg->mod_params->num_of_queues <= IWL49_NUM_QUEUES)
639                 priv->cfg->num_of_queues =
640                         priv->cfg->mod_params->num_of_queues;
641
642         priv->hw_params.max_txq_num = priv->cfg->num_of_queues;
643         priv->hw_params.dma_chnl_num = FH49_TCSR_CHNL_NUM;
644         priv->hw_params.scd_bc_tbls_size =
645                         priv->cfg->num_of_queues *
646                         sizeof(struct iwl4965_scd_bc_tbl);
647         priv->hw_params.tfd_size = sizeof(struct iwl_tfd);
648         priv->hw_params.max_stations = IWL4965_STATION_COUNT;
649         priv->hw_params.bcast_sta_id = IWL4965_BROADCAST_ID;
650         priv->hw_params.max_data_size = IWL49_RTC_DATA_SIZE;
651         priv->hw_params.max_inst_size = IWL49_RTC_INST_SIZE;
652         priv->hw_params.max_bsm_size = BSM_SRAM_SIZE;
653         priv->hw_params.ht40_channel = BIT(IEEE80211_BAND_5GHZ);
654
655         priv->hw_params.rx_wrt_ptr_reg = FH_RSCSR_CHNL0_WPTR;
656
657         priv->hw_params.tx_chains_num = num_of_ant(priv->cfg->valid_tx_ant);
658         priv->hw_params.rx_chains_num = num_of_ant(priv->cfg->valid_rx_ant);
659         priv->hw_params.valid_tx_ant = priv->cfg->valid_tx_ant;
660         priv->hw_params.valid_rx_ant = priv->cfg->valid_rx_ant;
661         if (priv->cfg->ops->lib->temp_ops.set_ct_kill)
662                 priv->cfg->ops->lib->temp_ops.set_ct_kill(priv);
663
664         priv->hw_params.sens = &iwl4965_sensitivity;
665
666         return 0;
667 }
668
669 static s32 iwl4965_math_div_round(s32 num, s32 denom, s32 *res)
670 {
671         s32 sign = 1;
672
673         if (num < 0) {
674                 sign = -sign;
675                 num = -num;
676         }
677         if (denom < 0) {
678                 sign = -sign;
679                 denom = -denom;
680         }
681         *res = 1;
682         *res = ((num * 2 + denom) / (denom * 2)) * sign;
683
684         return 1;
685 }
686
687 /**
688  * iwl4965_get_voltage_compensation - Power supply voltage comp for txpower
689  *
690  * Determines power supply voltage compensation for txpower calculations.
691  * Returns number of 1/2-dB steps to subtract from gain table index,
692  * to compensate for difference between power supply voltage during
693  * factory measurements, vs. current power supply voltage.
694  *
695  * Voltage indication is higher for lower voltage.
696  * Lower voltage requires more gain (lower gain table index).
697  */
698 static s32 iwl4965_get_voltage_compensation(s32 eeprom_voltage,
699                                             s32 current_voltage)
700 {
701         s32 comp = 0;
702
703         if ((TX_POWER_IWL_ILLEGAL_VOLTAGE == eeprom_voltage) ||
704             (TX_POWER_IWL_ILLEGAL_VOLTAGE == current_voltage))
705                 return 0;
706
707         iwl4965_math_div_round(current_voltage - eeprom_voltage,
708                                TX_POWER_IWL_VOLTAGE_CODES_PER_03V, &comp);
709
710         if (current_voltage > eeprom_voltage)
711                 comp *= 2;
712         if ((comp < -2) || (comp > 2))
713                 comp = 0;
714
715         return comp;
716 }
717
718 static s32 iwl4965_get_tx_atten_grp(u16 channel)
719 {
720         if (channel >= CALIB_IWL_TX_ATTEN_GR5_FCH &&
721             channel <= CALIB_IWL_TX_ATTEN_GR5_LCH)
722                 return CALIB_CH_GROUP_5;
723
724         if (channel >= CALIB_IWL_TX_ATTEN_GR1_FCH &&
725             channel <= CALIB_IWL_TX_ATTEN_GR1_LCH)
726                 return CALIB_CH_GROUP_1;
727
728         if (channel >= CALIB_IWL_TX_ATTEN_GR2_FCH &&
729             channel <= CALIB_IWL_TX_ATTEN_GR2_LCH)
730                 return CALIB_CH_GROUP_2;
731
732         if (channel >= CALIB_IWL_TX_ATTEN_GR3_FCH &&
733             channel <= CALIB_IWL_TX_ATTEN_GR3_LCH)
734                 return CALIB_CH_GROUP_3;
735
736         if (channel >= CALIB_IWL_TX_ATTEN_GR4_FCH &&
737             channel <= CALIB_IWL_TX_ATTEN_GR4_LCH)
738                 return CALIB_CH_GROUP_4;
739
740         return -1;
741 }
742
743 static u32 iwl4965_get_sub_band(const struct iwl_priv *priv, u32 channel)
744 {
745         s32 b = -1;
746
747         for (b = 0; b < EEPROM_TX_POWER_BANDS; b++) {
748                 if (priv->calib_info->band_info[b].ch_from == 0)
749                         continue;
750
751                 if ((channel >= priv->calib_info->band_info[b].ch_from)
752                     && (channel <= priv->calib_info->band_info[b].ch_to))
753                         break;
754         }
755
756         return b;
757 }
758
759 static s32 iwl4965_interpolate_value(s32 x, s32 x1, s32 y1, s32 x2, s32 y2)
760 {
761         s32 val;
762
763         if (x2 == x1)
764                 return y1;
765         else {
766                 iwl4965_math_div_round((x2 - x) * (y1 - y2), (x2 - x1), &val);
767                 return val + y2;
768         }
769 }
770
771 /**
772  * iwl4965_interpolate_chan - Interpolate factory measurements for one channel
773  *
774  * Interpolates factory measurements from the two sample channels within a
775  * sub-band, to apply to channel of interest.  Interpolation is proportional to
776  * differences in channel frequencies, which is proportional to differences
777  * in channel number.
778  */
779 static int iwl4965_interpolate_chan(struct iwl_priv *priv, u32 channel,
780                                     struct iwl_eeprom_calib_ch_info *chan_info)
781 {
782         s32 s = -1;
783         u32 c;
784         u32 m;
785         const struct iwl_eeprom_calib_measure *m1;
786         const struct iwl_eeprom_calib_measure *m2;
787         struct iwl_eeprom_calib_measure *omeas;
788         u32 ch_i1;
789         u32 ch_i2;
790
791         s = iwl4965_get_sub_band(priv, channel);
792         if (s >= EEPROM_TX_POWER_BANDS) {
793                 IWL_ERR(priv, "Tx Power can not find channel %d\n", channel);
794                 return -1;
795         }
796
797         ch_i1 = priv->calib_info->band_info[s].ch1.ch_num;
798         ch_i2 = priv->calib_info->band_info[s].ch2.ch_num;
799         chan_info->ch_num = (u8) channel;
800
801         IWL_DEBUG_TXPOWER(priv, "channel %d subband %d factory cal ch %d & %d\n",
802                           channel, s, ch_i1, ch_i2);
803
804         for (c = 0; c < EEPROM_TX_POWER_TX_CHAINS; c++) {
805                 for (m = 0; m < EEPROM_TX_POWER_MEASUREMENTS; m++) {
806                         m1 = &(priv->calib_info->band_info[s].ch1.
807                                measurements[c][m]);
808                         m2 = &(priv->calib_info->band_info[s].ch2.
809                                measurements[c][m]);
810                         omeas = &(chan_info->measurements[c][m]);
811
812                         omeas->actual_pow =
813                             (u8) iwl4965_interpolate_value(channel, ch_i1,
814                                                            m1->actual_pow,
815                                                            ch_i2,
816                                                            m2->actual_pow);
817                         omeas->gain_idx =
818                             (u8) iwl4965_interpolate_value(channel, ch_i1,
819                                                            m1->gain_idx, ch_i2,
820                                                            m2->gain_idx);
821                         omeas->temperature =
822                             (u8) iwl4965_interpolate_value(channel, ch_i1,
823                                                            m1->temperature,
824                                                            ch_i2,
825                                                            m2->temperature);
826                         omeas->pa_det =
827                             (s8) iwl4965_interpolate_value(channel, ch_i1,
828                                                            m1->pa_det, ch_i2,
829                                                            m2->pa_det);
830
831                         IWL_DEBUG_TXPOWER(priv,
832                                 "chain %d meas %d AP1=%d AP2=%d AP=%d\n", c, m,
833                                 m1->actual_pow, m2->actual_pow, omeas->actual_pow);
834                         IWL_DEBUG_TXPOWER(priv,
835                                 "chain %d meas %d NI1=%d NI2=%d NI=%d\n", c, m,
836                                 m1->gain_idx, m2->gain_idx, omeas->gain_idx);
837                         IWL_DEBUG_TXPOWER(priv,
838                                 "chain %d meas %d PA1=%d PA2=%d PA=%d\n", c, m,
839                                 m1->pa_det, m2->pa_det, omeas->pa_det);
840                         IWL_DEBUG_TXPOWER(priv,
841                                 "chain %d meas %d  T1=%d  T2=%d  T=%d\n", c, m,
842                                 m1->temperature, m2->temperature,
843                                 omeas->temperature);
844                 }
845         }
846
847         return 0;
848 }
849
850 /* bit-rate-dependent table to prevent Tx distortion, in half-dB units,
851  * for OFDM 6, 12, 18, 24, 36, 48, 54, 60 MBit, and CCK all rates. */
852 static s32 back_off_table[] = {
853         10, 10, 10, 10, 10, 15, 17, 20, /* OFDM SISO 20 MHz */
854         10, 10, 10, 10, 10, 15, 17, 20, /* OFDM MIMO 20 MHz */
855         10, 10, 10, 10, 10, 15, 17, 20, /* OFDM SISO 40 MHz */
856         10, 10, 10, 10, 10, 15, 17, 20, /* OFDM MIMO 40 MHz */
857         10                      /* CCK */
858 };
859
860 /* Thermal compensation values for txpower for various frequency ranges ...
861  *   ratios from 3:1 to 4.5:1 of degrees (Celsius) per half-dB gain adjust */
862 static struct iwl4965_txpower_comp_entry {
863         s32 degrees_per_05db_a;
864         s32 degrees_per_05db_a_denom;
865 } tx_power_cmp_tble[CALIB_CH_GROUP_MAX] = {
866         {9, 2},                 /* group 0 5.2, ch  34-43 */
867         {4, 1},                 /* group 1 5.2, ch  44-70 */
868         {4, 1},                 /* group 2 5.2, ch  71-124 */
869         {4, 1},                 /* group 3 5.2, ch 125-200 */
870         {3, 1}                  /* group 4 2.4, ch   all */
871 };
872
873 static s32 get_min_power_index(s32 rate_power_index, u32 band)
874 {
875         if (!band) {
876                 if ((rate_power_index & 7) <= 4)
877                         return MIN_TX_GAIN_INDEX_52GHZ_EXT;
878         }
879         return MIN_TX_GAIN_INDEX;
880 }
881
882 struct gain_entry {
883         u8 dsp;
884         u8 radio;
885 };
886
887 static const struct gain_entry gain_table[2][108] = {
888         /* 5.2GHz power gain index table */
889         {
890          {123, 0x3F},           /* highest txpower */
891          {117, 0x3F},
892          {110, 0x3F},
893          {104, 0x3F},
894          {98, 0x3F},
895          {110, 0x3E},
896          {104, 0x3E},
897          {98, 0x3E},
898          {110, 0x3D},
899          {104, 0x3D},
900          {98, 0x3D},
901          {110, 0x3C},
902          {104, 0x3C},
903          {98, 0x3C},
904          {110, 0x3B},
905          {104, 0x3B},
906          {98, 0x3B},
907          {110, 0x3A},
908          {104, 0x3A},
909          {98, 0x3A},
910          {110, 0x39},
911          {104, 0x39},
912          {98, 0x39},
913          {110, 0x38},
914          {104, 0x38},
915          {98, 0x38},
916          {110, 0x37},
917          {104, 0x37},
918          {98, 0x37},
919          {110, 0x36},
920          {104, 0x36},
921          {98, 0x36},
922          {110, 0x35},
923          {104, 0x35},
924          {98, 0x35},
925          {110, 0x34},
926          {104, 0x34},
927          {98, 0x34},
928          {110, 0x33},
929          {104, 0x33},
930          {98, 0x33},
931          {110, 0x32},
932          {104, 0x32},
933          {98, 0x32},
934          {110, 0x31},
935          {104, 0x31},
936          {98, 0x31},
937          {110, 0x30},
938          {104, 0x30},
939          {98, 0x30},
940          {110, 0x25},
941          {104, 0x25},
942          {98, 0x25},
943          {110, 0x24},
944          {104, 0x24},
945          {98, 0x24},
946          {110, 0x23},
947          {104, 0x23},
948          {98, 0x23},
949          {110, 0x22},
950          {104, 0x18},
951          {98, 0x18},
952          {110, 0x17},
953          {104, 0x17},
954          {98, 0x17},
955          {110, 0x16},
956          {104, 0x16},
957          {98, 0x16},
958          {110, 0x15},
959          {104, 0x15},
960          {98, 0x15},
961          {110, 0x14},
962          {104, 0x14},
963          {98, 0x14},
964          {110, 0x13},
965          {104, 0x13},
966          {98, 0x13},
967          {110, 0x12},
968          {104, 0x08},
969          {98, 0x08},
970          {110, 0x07},
971          {104, 0x07},
972          {98, 0x07},
973          {110, 0x06},
974          {104, 0x06},
975          {98, 0x06},
976          {110, 0x05},
977          {104, 0x05},
978          {98, 0x05},
979          {110, 0x04},
980          {104, 0x04},
981          {98, 0x04},
982          {110, 0x03},
983          {104, 0x03},
984          {98, 0x03},
985          {110, 0x02},
986          {104, 0x02},
987          {98, 0x02},
988          {110, 0x01},
989          {104, 0x01},
990          {98, 0x01},
991          {110, 0x00},
992          {104, 0x00},
993          {98, 0x00},
994          {93, 0x00},
995          {88, 0x00},
996          {83, 0x00},
997          {78, 0x00},
998          },
999         /* 2.4GHz power gain index table */
1000         {
1001          {110, 0x3f},           /* highest txpower */
1002          {104, 0x3f},
1003          {98, 0x3f},
1004          {110, 0x3e},
1005          {104, 0x3e},
1006          {98, 0x3e},
1007          {110, 0x3d},
1008          {104, 0x3d},
1009          {98, 0x3d},
1010          {110, 0x3c},
1011          {104, 0x3c},
1012          {98, 0x3c},
1013          {110, 0x3b},
1014          {104, 0x3b},
1015          {98, 0x3b},
1016          {110, 0x3a},
1017          {104, 0x3a},
1018          {98, 0x3a},
1019          {110, 0x39},
1020          {104, 0x39},
1021          {98, 0x39},
1022          {110, 0x38},
1023          {104, 0x38},
1024          {98, 0x38},
1025          {110, 0x37},
1026          {104, 0x37},
1027          {98, 0x37},
1028          {110, 0x36},
1029          {104, 0x36},
1030          {98, 0x36},
1031          {110, 0x35},
1032          {104, 0x35},
1033          {98, 0x35},
1034          {110, 0x34},
1035          {104, 0x34},
1036          {98, 0x34},
1037          {110, 0x33},
1038          {104, 0x33},
1039          {98, 0x33},
1040          {110, 0x32},
1041          {104, 0x32},
1042          {98, 0x32},
1043          {110, 0x31},
1044          {104, 0x31},
1045          {98, 0x31},
1046          {110, 0x30},
1047          {104, 0x30},
1048          {98, 0x30},
1049          {110, 0x6},
1050          {104, 0x6},
1051          {98, 0x6},
1052          {110, 0x5},
1053          {104, 0x5},
1054          {98, 0x5},
1055          {110, 0x4},
1056          {104, 0x4},
1057          {98, 0x4},
1058          {110, 0x3},
1059          {104, 0x3},
1060          {98, 0x3},
1061          {110, 0x2},
1062          {104, 0x2},
1063          {98, 0x2},
1064          {110, 0x1},
1065          {104, 0x1},
1066          {98, 0x1},
1067          {110, 0x0},
1068          {104, 0x0},
1069          {98, 0x0},
1070          {97, 0},
1071          {96, 0},
1072          {95, 0},
1073          {94, 0},
1074          {93, 0},
1075          {92, 0},
1076          {91, 0},
1077          {90, 0},
1078          {89, 0},
1079          {88, 0},
1080          {87, 0},
1081          {86, 0},
1082          {85, 0},
1083          {84, 0},
1084          {83, 0},
1085          {82, 0},
1086          {81, 0},
1087          {80, 0},
1088          {79, 0},
1089          {78, 0},
1090          {77, 0},
1091          {76, 0},
1092          {75, 0},
1093          {74, 0},
1094          {73, 0},
1095          {72, 0},
1096          {71, 0},
1097          {70, 0},
1098          {69, 0},
1099          {68, 0},
1100          {67, 0},
1101          {66, 0},
1102          {65, 0},
1103          {64, 0},
1104          {63, 0},
1105          {62, 0},
1106          {61, 0},
1107          {60, 0},
1108          {59, 0},
1109          }
1110 };
1111
1112 static int iwl4965_fill_txpower_tbl(struct iwl_priv *priv, u8 band, u16 channel,
1113                                     u8 is_ht40, u8 ctrl_chan_high,
1114                                     struct iwl4965_tx_power_db *tx_power_tbl)
1115 {
1116         u8 saturation_power;
1117         s32 target_power;
1118         s32 user_target_power;
1119         s32 power_limit;
1120         s32 current_temp;
1121         s32 reg_limit;
1122         s32 current_regulatory;
1123         s32 txatten_grp = CALIB_CH_GROUP_MAX;
1124         int i;
1125         int c;
1126         const struct iwl_channel_info *ch_info = NULL;
1127         struct iwl_eeprom_calib_ch_info ch_eeprom_info;
1128         const struct iwl_eeprom_calib_measure *measurement;
1129         s16 voltage;
1130         s32 init_voltage;
1131         s32 voltage_compensation;
1132         s32 degrees_per_05db_num;
1133         s32 degrees_per_05db_denom;
1134         s32 factory_temp;
1135         s32 temperature_comp[2];
1136         s32 factory_gain_index[2];
1137         s32 factory_actual_pwr[2];
1138         s32 power_index;
1139
1140         /* tx_power_user_lmt is in dBm, convert to half-dBm (half-dB units
1141          *   are used for indexing into txpower table) */
1142         user_target_power = 2 * priv->tx_power_user_lmt;
1143
1144         /* Get current (RXON) channel, band, width */
1145         IWL_DEBUG_TXPOWER(priv, "chan %d band %d is_ht40 %d\n", channel, band,
1146                           is_ht40);
1147
1148         ch_info = iwl_get_channel_info(priv, priv->band, channel);
1149
1150         if (!is_channel_valid(ch_info))
1151                 return -EINVAL;
1152
1153         /* get txatten group, used to select 1) thermal txpower adjustment
1154          *   and 2) mimo txpower balance between Tx chains. */
1155         txatten_grp = iwl4965_get_tx_atten_grp(channel);
1156         if (txatten_grp < 0) {
1157                 IWL_ERR(priv, "Can't find txatten group for channel %d.\n",
1158                           channel);
1159                 return -EINVAL;
1160         }
1161
1162         IWL_DEBUG_TXPOWER(priv, "channel %d belongs to txatten group %d\n",
1163                           channel, txatten_grp);
1164
1165         if (is_ht40) {
1166                 if (ctrl_chan_high)
1167                         channel -= 2;
1168                 else
1169                         channel += 2;
1170         }
1171
1172         /* hardware txpower limits ...
1173          * saturation (clipping distortion) txpowers are in half-dBm */
1174         if (band)
1175                 saturation_power = priv->calib_info->saturation_power24;
1176         else
1177                 saturation_power = priv->calib_info->saturation_power52;
1178
1179         if (saturation_power < IWL_TX_POWER_SATURATION_MIN ||
1180             saturation_power > IWL_TX_POWER_SATURATION_MAX) {
1181                 if (band)
1182                         saturation_power = IWL_TX_POWER_DEFAULT_SATURATION_24;
1183                 else
1184                         saturation_power = IWL_TX_POWER_DEFAULT_SATURATION_52;
1185         }
1186
1187         /* regulatory txpower limits ... reg_limit values are in half-dBm,
1188          *   max_power_avg values are in dBm, convert * 2 */
1189         if (is_ht40)
1190                 reg_limit = ch_info->ht40_max_power_avg * 2;
1191         else
1192                 reg_limit = ch_info->max_power_avg * 2;
1193
1194         if ((reg_limit < IWL_TX_POWER_REGULATORY_MIN) ||
1195             (reg_limit > IWL_TX_POWER_REGULATORY_MAX)) {
1196                 if (band)
1197                         reg_limit = IWL_TX_POWER_DEFAULT_REGULATORY_24;
1198                 else
1199                         reg_limit = IWL_TX_POWER_DEFAULT_REGULATORY_52;
1200         }
1201
1202         /* Interpolate txpower calibration values for this channel,
1203          *   based on factory calibration tests on spaced channels. */
1204         iwl4965_interpolate_chan(priv, channel, &ch_eeprom_info);
1205
1206         /* calculate tx gain adjustment based on power supply voltage */
1207         voltage = priv->calib_info->voltage;
1208         init_voltage = (s32)le32_to_cpu(priv->card_alive_init.voltage);
1209         voltage_compensation =
1210             iwl4965_get_voltage_compensation(voltage, init_voltage);
1211
1212         IWL_DEBUG_TXPOWER(priv, "curr volt %d eeprom volt %d volt comp %d\n",
1213                           init_voltage,
1214                           voltage, voltage_compensation);
1215
1216         /* get current temperature (Celsius) */
1217         current_temp = max(priv->temperature, IWL_TX_POWER_TEMPERATURE_MIN);
1218         current_temp = min(priv->temperature, IWL_TX_POWER_TEMPERATURE_MAX);
1219         current_temp = KELVIN_TO_CELSIUS(current_temp);
1220
1221         /* select thermal txpower adjustment params, based on channel group
1222          *   (same frequency group used for mimo txatten adjustment) */
1223         degrees_per_05db_num =
1224             tx_power_cmp_tble[txatten_grp].degrees_per_05db_a;
1225         degrees_per_05db_denom =
1226             tx_power_cmp_tble[txatten_grp].degrees_per_05db_a_denom;
1227
1228         /* get per-chain txpower values from factory measurements */
1229         for (c = 0; c < 2; c++) {
1230                 measurement = &ch_eeprom_info.measurements[c][1];
1231
1232                 /* txgain adjustment (in half-dB steps) based on difference
1233                  *   between factory and current temperature */
1234                 factory_temp = measurement->temperature;
1235                 iwl4965_math_div_round((current_temp - factory_temp) *
1236                                        degrees_per_05db_denom,
1237                                        degrees_per_05db_num,
1238                                        &temperature_comp[c]);
1239
1240                 factory_gain_index[c] = measurement->gain_idx;
1241                 factory_actual_pwr[c] = measurement->actual_pow;
1242
1243                 IWL_DEBUG_TXPOWER(priv, "chain = %d\n", c);
1244                 IWL_DEBUG_TXPOWER(priv, "fctry tmp %d, "
1245                                   "curr tmp %d, comp %d steps\n",
1246                                   factory_temp, current_temp,
1247                                   temperature_comp[c]);
1248
1249                 IWL_DEBUG_TXPOWER(priv, "fctry idx %d, fctry pwr %d\n",
1250                                   factory_gain_index[c],
1251                                   factory_actual_pwr[c]);
1252         }
1253
1254         /* for each of 33 bit-rates (including 1 for CCK) */
1255         for (i = 0; i < POWER_TABLE_NUM_ENTRIES; i++) {
1256                 u8 is_mimo_rate;
1257                 union iwl4965_tx_power_dual_stream tx_power;
1258
1259                 /* for mimo, reduce each chain's txpower by half
1260                  * (3dB, 6 steps), so total output power is regulatory
1261                  * compliant. */
1262                 if (i & 0x8) {
1263                         current_regulatory = reg_limit -
1264                             IWL_TX_POWER_MIMO_REGULATORY_COMPENSATION;
1265                         is_mimo_rate = 1;
1266                 } else {
1267                         current_regulatory = reg_limit;
1268                         is_mimo_rate = 0;
1269                 }
1270
1271                 /* find txpower limit, either hardware or regulatory */
1272                 power_limit = saturation_power - back_off_table[i];
1273                 if (power_limit > current_regulatory)
1274                         power_limit = current_regulatory;
1275
1276                 /* reduce user's txpower request if necessary
1277                  * for this rate on this channel */
1278                 target_power = user_target_power;
1279                 if (target_power > power_limit)
1280                         target_power = power_limit;
1281
1282                 IWL_DEBUG_TXPOWER(priv, "rate %d sat %d reg %d usr %d tgt %d\n",
1283                                   i, saturation_power - back_off_table[i],
1284                                   current_regulatory, user_target_power,
1285                                   target_power);
1286
1287                 /* for each of 2 Tx chains (radio transmitters) */
1288                 for (c = 0; c < 2; c++) {
1289                         s32 atten_value;
1290
1291                         if (is_mimo_rate)
1292                                 atten_value =
1293                                     (s32)le32_to_cpu(priv->card_alive_init.
1294                                     tx_atten[txatten_grp][c]);
1295                         else
1296                                 atten_value = 0;
1297
1298                         /* calculate index; higher index means lower txpower */
1299                         power_index = (u8) (factory_gain_index[c] -
1300                                             (target_power -
1301                                              factory_actual_pwr[c]) -
1302                                             temperature_comp[c] -
1303                                             voltage_compensation +
1304                                             atten_value);
1305
1306 /*                      IWL_DEBUG_TXPOWER(priv, "calculated txpower index %d\n",
1307                                                 power_index); */
1308
1309                         if (power_index < get_min_power_index(i, band))
1310                                 power_index = get_min_power_index(i, band);
1311
1312                         /* adjust 5 GHz index to support negative indexes */
1313                         if (!band)
1314                                 power_index += 9;
1315
1316                         /* CCK, rate 32, reduce txpower for CCK */
1317                         if (i == POWER_TABLE_CCK_ENTRY)
1318                                 power_index +=
1319                                     IWL_TX_POWER_CCK_COMPENSATION_C_STEP;
1320
1321                         /* stay within the table! */
1322                         if (power_index > 107) {
1323                                 IWL_WARN(priv, "txpower index %d > 107\n",
1324                                             power_index);
1325                                 power_index = 107;
1326                         }
1327                         if (power_index < 0) {
1328                                 IWL_WARN(priv, "txpower index %d < 0\n",
1329                                             power_index);
1330                                 power_index = 0;
1331                         }
1332
1333                         /* fill txpower command for this rate/chain */
1334                         tx_power.s.radio_tx_gain[c] =
1335                                 gain_table[band][power_index].radio;
1336                         tx_power.s.dsp_predis_atten[c] =
1337                                 gain_table[band][power_index].dsp;
1338
1339                         IWL_DEBUG_TXPOWER(priv, "chain %d mimo %d index %d "
1340                                           "gain 0x%02x dsp %d\n",
1341                                           c, atten_value, power_index,
1342                                         tx_power.s.radio_tx_gain[c],
1343                                         tx_power.s.dsp_predis_atten[c]);
1344                 } /* for each chain */
1345
1346                 tx_power_tbl->power_tbl[i].dw = cpu_to_le32(tx_power.dw);
1347
1348         } /* for each rate */
1349
1350         return 0;
1351 }
1352
1353 /**
1354  * iwl4965_send_tx_power - Configure the TXPOWER level user limit
1355  *
1356  * Uses the active RXON for channel, band, and characteristics (ht40, high)
1357  * The power limit is taken from priv->tx_power_user_lmt.
1358  */
1359 static int iwl4965_send_tx_power(struct iwl_priv *priv)
1360 {
1361         struct iwl4965_txpowertable_cmd cmd = { 0 };
1362         int ret;
1363         u8 band = 0;
1364         bool is_ht40 = false;
1365         u8 ctrl_chan_high = 0;
1366
1367         if (test_bit(STATUS_SCANNING, &priv->status)) {
1368                 /* If this gets hit a lot, switch it to a BUG() and catch
1369                  * the stack trace to find out who is calling this during
1370                  * a scan. */
1371                 IWL_WARN(priv, "TX Power requested while scanning!\n");
1372                 return -EAGAIN;
1373         }
1374
1375         band = priv->band == IEEE80211_BAND_2GHZ;
1376
1377         is_ht40 =  is_ht40_channel(priv->active_rxon.flags);
1378
1379         if (is_ht40 &&
1380             (priv->active_rxon.flags & RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK))
1381                 ctrl_chan_high = 1;
1382
1383         cmd.band = band;
1384         cmd.channel = priv->active_rxon.channel;
1385
1386         ret = iwl4965_fill_txpower_tbl(priv, band,
1387                                 le16_to_cpu(priv->active_rxon.channel),
1388                                 is_ht40, ctrl_chan_high, &cmd.tx_power);
1389         if (ret)
1390                 goto out;
1391
1392         ret = iwl_send_cmd_pdu(priv, REPLY_TX_PWR_TABLE_CMD, sizeof(cmd), &cmd);
1393
1394 out:
1395         return ret;
1396 }
1397
1398 static int iwl4965_send_rxon_assoc(struct iwl_priv *priv)
1399 {
1400         int ret = 0;
1401         struct iwl4965_rxon_assoc_cmd rxon_assoc;
1402         const struct iwl_rxon_cmd *rxon1 = &priv->staging_rxon;
1403         const struct iwl_rxon_cmd *rxon2 = &priv->active_rxon;
1404
1405         if ((rxon1->flags == rxon2->flags) &&
1406             (rxon1->filter_flags == rxon2->filter_flags) &&
1407             (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
1408             (rxon1->ofdm_ht_single_stream_basic_rates ==
1409              rxon2->ofdm_ht_single_stream_basic_rates) &&
1410             (rxon1->ofdm_ht_dual_stream_basic_rates ==
1411              rxon2->ofdm_ht_dual_stream_basic_rates) &&
1412             (rxon1->rx_chain == rxon2->rx_chain) &&
1413             (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
1414                 IWL_DEBUG_INFO(priv, "Using current RXON_ASSOC.  Not resending.\n");
1415                 return 0;
1416         }
1417
1418         rxon_assoc.flags = priv->staging_rxon.flags;
1419         rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
1420         rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
1421         rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
1422         rxon_assoc.reserved = 0;
1423         rxon_assoc.ofdm_ht_single_stream_basic_rates =
1424             priv->staging_rxon.ofdm_ht_single_stream_basic_rates;
1425         rxon_assoc.ofdm_ht_dual_stream_basic_rates =
1426             priv->staging_rxon.ofdm_ht_dual_stream_basic_rates;
1427         rxon_assoc.rx_chain_select_flags = priv->staging_rxon.rx_chain;
1428
1429         ret = iwl_send_cmd_pdu_async(priv, REPLY_RXON_ASSOC,
1430                                      sizeof(rxon_assoc), &rxon_assoc, NULL);
1431         if (ret)
1432                 return ret;
1433
1434         return ret;
1435 }
1436
1437 static int iwl4965_hw_channel_switch(struct iwl_priv *priv, u16 channel)
1438 {
1439         int rc;
1440         u8 band = 0;
1441         bool is_ht40 = false;
1442         u8 ctrl_chan_high = 0;
1443         struct iwl4965_channel_switch_cmd cmd;
1444         const struct iwl_channel_info *ch_info;
1445
1446         band = priv->band == IEEE80211_BAND_2GHZ;
1447
1448         ch_info = iwl_get_channel_info(priv, priv->band, channel);
1449
1450         is_ht40 = is_ht40_channel(priv->staging_rxon.flags);
1451
1452         if (is_ht40 &&
1453             (priv->staging_rxon.flags & RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK))
1454                 ctrl_chan_high = 1;
1455
1456         cmd.band = band;
1457         cmd.expect_beacon = 0;
1458         cmd.channel = cpu_to_le16(channel);
1459         cmd.rxon_flags = priv->staging_rxon.flags;
1460         cmd.rxon_filter_flags = priv->staging_rxon.filter_flags;
1461         cmd.switch_time = cpu_to_le32(priv->ucode_beacon_time);
1462         if (ch_info)
1463                 cmd.expect_beacon = is_channel_radar(ch_info);
1464         else {
1465                 IWL_ERR(priv, "invalid channel switch from %u to %u\n",
1466                         priv->active_rxon.channel, channel);
1467                 return -EFAULT;
1468         }
1469
1470         rc = iwl4965_fill_txpower_tbl(priv, band, channel, is_ht40,
1471                                       ctrl_chan_high, &cmd.tx_power);
1472         if (rc) {
1473                 IWL_DEBUG_11H(priv, "error:%d  fill txpower_tbl\n", rc);
1474                 return rc;
1475         }
1476
1477         priv->switch_rxon.channel = cpu_to_le16(channel);
1478         priv->switch_rxon.switch_in_progress = true;
1479
1480         return iwl_send_cmd_pdu(priv, REPLY_CHANNEL_SWITCH, sizeof(cmd), &cmd);
1481 }
1482
1483 /**
1484  * iwl4965_txq_update_byte_cnt_tbl - Set up entry in Tx byte-count array
1485  */
1486 static void iwl4965_txq_update_byte_cnt_tbl(struct iwl_priv *priv,
1487                                             struct iwl_tx_queue *txq,
1488                                             u16 byte_cnt)
1489 {
1490         struct iwl4965_scd_bc_tbl *scd_bc_tbl = priv->scd_bc_tbls.addr;
1491         int txq_id = txq->q.id;
1492         int write_ptr = txq->q.write_ptr;
1493         int len = byte_cnt + IWL_TX_CRC_SIZE + IWL_TX_DELIMITER_SIZE;
1494         __le16 bc_ent;
1495
1496         WARN_ON(len > 0xFFF || write_ptr >= TFD_QUEUE_SIZE_MAX);
1497
1498         bc_ent = cpu_to_le16(len & 0xFFF);
1499         /* Set up byte count within first 256 entries */
1500         scd_bc_tbl[txq_id].tfd_offset[write_ptr] = bc_ent;
1501
1502         /* If within first 64 entries, duplicate at end */
1503         if (write_ptr < TFD_QUEUE_SIZE_BC_DUP)
1504                 scd_bc_tbl[txq_id].
1505                         tfd_offset[TFD_QUEUE_SIZE_MAX + write_ptr] = bc_ent;
1506 }
1507
1508 /**
1509  * sign_extend - Sign extend a value using specified bit as sign-bit
1510  *
1511  * Example: sign_extend(9, 3) would return -7 as bit3 of 1001b is 1
1512  * and bit0..2 is 001b which when sign extended to 1111111111111001b is -7.
1513  *
1514  * @param oper value to sign extend
1515  * @param index 0 based bit index (0<=index<32) to sign bit
1516  */
1517 static s32 sign_extend(u32 oper, int index)
1518 {
1519         u8 shift = 31 - index;
1520
1521         return (s32)(oper << shift) >> shift;
1522 }
1523
1524 /**
1525  * iwl4965_hw_get_temperature - return the calibrated temperature (in Kelvin)
1526  * @statistics: Provides the temperature reading from the uCode
1527  *
1528  * A return of <0 indicates bogus data in the statistics
1529  */
1530 static int iwl4965_hw_get_temperature(struct iwl_priv *priv)
1531 {
1532         s32 temperature;
1533         s32 vt;
1534         s32 R1, R2, R3;
1535         u32 R4;
1536
1537         if (test_bit(STATUS_TEMPERATURE, &priv->status) &&
1538                 (priv->statistics.flag & STATISTICS_REPLY_FLG_HT40_MODE_MSK)) {
1539                 IWL_DEBUG_TEMP(priv, "Running HT40 temperature calibration\n");
1540                 R1 = (s32)le32_to_cpu(priv->card_alive_init.therm_r1[1]);
1541                 R2 = (s32)le32_to_cpu(priv->card_alive_init.therm_r2[1]);
1542                 R3 = (s32)le32_to_cpu(priv->card_alive_init.therm_r3[1]);
1543                 R4 = le32_to_cpu(priv->card_alive_init.therm_r4[1]);
1544         } else {
1545                 IWL_DEBUG_TEMP(priv, "Running temperature calibration\n");
1546                 R1 = (s32)le32_to_cpu(priv->card_alive_init.therm_r1[0]);
1547                 R2 = (s32)le32_to_cpu(priv->card_alive_init.therm_r2[0]);
1548                 R3 = (s32)le32_to_cpu(priv->card_alive_init.therm_r3[0]);
1549                 R4 = le32_to_cpu(priv->card_alive_init.therm_r4[0]);
1550         }
1551
1552         /*
1553          * Temperature is only 23 bits, so sign extend out to 32.
1554          *
1555          * NOTE If we haven't received a statistics notification yet
1556          * with an updated temperature, use R4 provided to us in the
1557          * "initialize" ALIVE response.
1558          */
1559         if (!test_bit(STATUS_TEMPERATURE, &priv->status))
1560                 vt = sign_extend(R4, 23);
1561         else
1562                 vt = sign_extend(
1563                         le32_to_cpu(priv->statistics.general.temperature), 23);
1564
1565         IWL_DEBUG_TEMP(priv, "Calib values R[1-3]: %d %d %d R4: %d\n", R1, R2, R3, vt);
1566
1567         if (R3 == R1) {
1568                 IWL_ERR(priv, "Calibration conflict R1 == R3\n");
1569                 return -1;
1570         }
1571
1572         /* Calculate temperature in degrees Kelvin, adjust by 97%.
1573          * Add offset to center the adjustment around 0 degrees Centigrade. */
1574         temperature = TEMPERATURE_CALIB_A_VAL * (vt - R2);
1575         temperature /= (R3 - R1);
1576         temperature = (temperature * 97) / 100 + TEMPERATURE_CALIB_KELVIN_OFFSET;
1577
1578         IWL_DEBUG_TEMP(priv, "Calibrated temperature: %dK, %dC\n",
1579                         temperature, KELVIN_TO_CELSIUS(temperature));
1580
1581         return temperature;
1582 }
1583
1584 /* Adjust Txpower only if temperature variance is greater than threshold. */
1585 #define IWL_TEMPERATURE_THRESHOLD   3
1586
1587 /**
1588  * iwl4965_is_temp_calib_needed - determines if new calibration is needed
1589  *
1590  * If the temperature changed has changed sufficiently, then a recalibration
1591  * is needed.
1592  *
1593  * Assumes caller will replace priv->last_temperature once calibration
1594  * executed.
1595  */
1596 static int iwl4965_is_temp_calib_needed(struct iwl_priv *priv)
1597 {
1598         int temp_diff;
1599
1600         if (!test_bit(STATUS_STATISTICS, &priv->status)) {
1601                 IWL_DEBUG_TEMP(priv, "Temperature not updated -- no statistics.\n");
1602                 return 0;
1603         }
1604
1605         temp_diff = priv->temperature - priv->last_temperature;
1606
1607         /* get absolute value */
1608         if (temp_diff < 0) {
1609                 IWL_DEBUG_POWER(priv, "Getting cooler, delta %d, \n", temp_diff);
1610                 temp_diff = -temp_diff;
1611         } else if (temp_diff == 0)
1612                 IWL_DEBUG_POWER(priv, "Same temp, \n");
1613         else
1614                 IWL_DEBUG_POWER(priv, "Getting warmer, delta %d, \n", temp_diff);
1615
1616         if (temp_diff < IWL_TEMPERATURE_THRESHOLD) {
1617                 IWL_DEBUG_POWER(priv, "Thermal txpower calib not needed\n");
1618                 return 0;
1619         }
1620
1621         IWL_DEBUG_POWER(priv, "Thermal txpower calib needed\n");
1622
1623         return 1;
1624 }
1625
1626 static void iwl4965_temperature_calib(struct iwl_priv *priv)
1627 {
1628         s32 temp;
1629
1630         temp = iwl4965_hw_get_temperature(priv);
1631         if (temp < 0)
1632                 return;
1633
1634         if (priv->temperature != temp) {
1635                 if (priv->temperature)
1636                         IWL_DEBUG_TEMP(priv, "Temperature changed "
1637                                        "from %dC to %dC\n",
1638                                        KELVIN_TO_CELSIUS(priv->temperature),
1639                                        KELVIN_TO_CELSIUS(temp));
1640                 else
1641                         IWL_DEBUG_TEMP(priv, "Temperature "
1642                                        "initialized to %dC\n",
1643                                        KELVIN_TO_CELSIUS(temp));
1644         }
1645
1646         priv->temperature = temp;
1647         iwl_tt_handler(priv);
1648         set_bit(STATUS_TEMPERATURE, &priv->status);
1649
1650         if (!priv->disable_tx_power_cal &&
1651              unlikely(!test_bit(STATUS_SCANNING, &priv->status)) &&
1652              iwl4965_is_temp_calib_needed(priv))
1653                 queue_work(priv->workqueue, &priv->txpower_work);
1654 }
1655
1656 /**
1657  * iwl4965_tx_queue_stop_scheduler - Stop queue, but keep configuration
1658  */
1659 static void iwl4965_tx_queue_stop_scheduler(struct iwl_priv *priv,
1660                                             u16 txq_id)
1661 {
1662         /* Simply stop the queue, but don't change any configuration;
1663          * the SCD_ACT_EN bit is the write-enable mask for the ACTIVE bit. */
1664         iwl_write_prph(priv,
1665                 IWL49_SCD_QUEUE_STATUS_BITS(txq_id),
1666                 (0 << IWL49_SCD_QUEUE_STTS_REG_POS_ACTIVE)|
1667                 (1 << IWL49_SCD_QUEUE_STTS_REG_POS_SCD_ACT_EN));
1668 }
1669
1670 /**
1671  * txq_id must be greater than IWL49_FIRST_AMPDU_QUEUE
1672  * priv->lock must be held by the caller
1673  */
1674 static int iwl4965_txq_agg_disable(struct iwl_priv *priv, u16 txq_id,
1675                                    u16 ssn_idx, u8 tx_fifo)
1676 {
1677         if ((IWL49_FIRST_AMPDU_QUEUE > txq_id) ||
1678             (IWL49_FIRST_AMPDU_QUEUE + priv->cfg->num_of_ampdu_queues
1679              <= txq_id)) {
1680                 IWL_WARN(priv,
1681                         "queue number out of range: %d, must be %d to %d\n",
1682                         txq_id, IWL49_FIRST_AMPDU_QUEUE,
1683                         IWL49_FIRST_AMPDU_QUEUE +
1684                         priv->cfg->num_of_ampdu_queues - 1);
1685                 return -EINVAL;
1686         }
1687
1688         iwl4965_tx_queue_stop_scheduler(priv, txq_id);
1689
1690         iwl_clear_bits_prph(priv, IWL49_SCD_QUEUECHAIN_SEL, (1 << txq_id));
1691
1692         priv->txq[txq_id].q.read_ptr = (ssn_idx & 0xff);
1693         priv->txq[txq_id].q.write_ptr = (ssn_idx & 0xff);
1694         /* supposes that ssn_idx is valid (!= 0xFFF) */
1695         iwl4965_set_wr_ptrs(priv, txq_id, ssn_idx);
1696
1697         iwl_clear_bits_prph(priv, IWL49_SCD_INTERRUPT_MASK, (1 << txq_id));
1698         iwl_txq_ctx_deactivate(priv, txq_id);
1699         iwl4965_tx_queue_set_status(priv, &priv->txq[txq_id], tx_fifo, 0);
1700
1701         return 0;
1702 }
1703
1704 /**
1705  * iwl4965_tx_queue_set_q2ratid - Map unique receiver/tid combination to a queue
1706  */
1707 static int iwl4965_tx_queue_set_q2ratid(struct iwl_priv *priv, u16 ra_tid,
1708                                         u16 txq_id)
1709 {
1710         u32 tbl_dw_addr;
1711         u32 tbl_dw;
1712         u16 scd_q2ratid;
1713
1714         scd_q2ratid = ra_tid & IWL_SCD_QUEUE_RA_TID_MAP_RATID_MSK;
1715
1716         tbl_dw_addr = priv->scd_base_addr +
1717                         IWL49_SCD_TRANSLATE_TBL_OFFSET_QUEUE(txq_id);
1718
1719         tbl_dw = iwl_read_targ_mem(priv, tbl_dw_addr);
1720
1721         if (txq_id & 0x1)
1722                 tbl_dw = (scd_q2ratid << 16) | (tbl_dw & 0x0000FFFF);
1723         else
1724                 tbl_dw = scd_q2ratid | (tbl_dw & 0xFFFF0000);
1725
1726         iwl_write_targ_mem(priv, tbl_dw_addr, tbl_dw);
1727
1728         return 0;
1729 }
1730
1731
1732 /**
1733  * iwl4965_tx_queue_agg_enable - Set up & enable aggregation for selected queue
1734  *
1735  * NOTE:  txq_id must be greater than IWL49_FIRST_AMPDU_QUEUE,
1736  *        i.e. it must be one of the higher queues used for aggregation
1737  */
1738 static int iwl4965_txq_agg_enable(struct iwl_priv *priv, int txq_id,
1739                                   int tx_fifo, int sta_id, int tid, u16 ssn_idx)
1740 {
1741         unsigned long flags;
1742         u16 ra_tid;
1743
1744         if ((IWL49_FIRST_AMPDU_QUEUE > txq_id) ||
1745             (IWL49_FIRST_AMPDU_QUEUE + priv->cfg->num_of_ampdu_queues
1746              <= txq_id)) {
1747                 IWL_WARN(priv,
1748                         "queue number out of range: %d, must be %d to %d\n",
1749                         txq_id, IWL49_FIRST_AMPDU_QUEUE,
1750                         IWL49_FIRST_AMPDU_QUEUE +
1751                         priv->cfg->num_of_ampdu_queues - 1);
1752                 return -EINVAL;
1753         }
1754
1755         ra_tid = BUILD_RAxTID(sta_id, tid);
1756
1757         /* Modify device's station table to Tx this TID */
1758         iwl_sta_tx_modify_enable_tid(priv, sta_id, tid);
1759
1760         spin_lock_irqsave(&priv->lock, flags);
1761
1762         /* Stop this Tx queue before configuring it */
1763         iwl4965_tx_queue_stop_scheduler(priv, txq_id);
1764
1765         /* Map receiver-address / traffic-ID to this queue */
1766         iwl4965_tx_queue_set_q2ratid(priv, ra_tid, txq_id);
1767
1768         /* Set this queue as a chain-building queue */
1769         iwl_set_bits_prph(priv, IWL49_SCD_QUEUECHAIN_SEL, (1 << txq_id));
1770
1771         /* Place first TFD at index corresponding to start sequence number.
1772          * Assumes that ssn_idx is valid (!= 0xFFF) */
1773         priv->txq[txq_id].q.read_ptr = (ssn_idx & 0xff);
1774         priv->txq[txq_id].q.write_ptr = (ssn_idx & 0xff);
1775         iwl4965_set_wr_ptrs(priv, txq_id, ssn_idx);
1776
1777         /* Set up Tx window size and frame limit for this queue */
1778         iwl_write_targ_mem(priv,
1779                 priv->scd_base_addr + IWL49_SCD_CONTEXT_QUEUE_OFFSET(txq_id),
1780                 (SCD_WIN_SIZE << IWL49_SCD_QUEUE_CTX_REG1_WIN_SIZE_POS) &
1781                 IWL49_SCD_QUEUE_CTX_REG1_WIN_SIZE_MSK);
1782
1783         iwl_write_targ_mem(priv, priv->scd_base_addr +
1784                 IWL49_SCD_CONTEXT_QUEUE_OFFSET(txq_id) + sizeof(u32),
1785                 (SCD_FRAME_LIMIT << IWL49_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_POS)
1786                 & IWL49_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_MSK);
1787
1788         iwl_set_bits_prph(priv, IWL49_SCD_INTERRUPT_MASK, (1 << txq_id));
1789
1790         /* Set up Status area in SRAM, map to Tx DMA/FIFO, activate the queue */
1791         iwl4965_tx_queue_set_status(priv, &priv->txq[txq_id], tx_fifo, 1);
1792
1793         spin_unlock_irqrestore(&priv->lock, flags);
1794
1795         return 0;
1796 }
1797
1798
1799 static u16 iwl4965_get_hcmd_size(u8 cmd_id, u16 len)
1800 {
1801         switch (cmd_id) {
1802         case REPLY_RXON:
1803                 return (u16) sizeof(struct iwl4965_rxon_cmd);
1804         default:
1805                 return len;
1806         }
1807 }
1808
1809 static u16 iwl4965_build_addsta_hcmd(const struct iwl_addsta_cmd *cmd, u8 *data)
1810 {
1811         struct iwl4965_addsta_cmd *addsta = (struct iwl4965_addsta_cmd *)data;
1812         addsta->mode = cmd->mode;
1813         memcpy(&addsta->sta, &cmd->sta, sizeof(struct sta_id_modify));
1814         memcpy(&addsta->key, &cmd->key, sizeof(struct iwl4965_keyinfo));
1815         addsta->station_flags = cmd->station_flags;
1816         addsta->station_flags_msk = cmd->station_flags_msk;
1817         addsta->tid_disable_tx = cmd->tid_disable_tx;
1818         addsta->add_immediate_ba_tid = cmd->add_immediate_ba_tid;
1819         addsta->remove_immediate_ba_tid = cmd->remove_immediate_ba_tid;
1820         addsta->add_immediate_ba_ssn = cmd->add_immediate_ba_ssn;
1821         addsta->sleep_tx_count = cmd->sleep_tx_count;
1822         addsta->reserved1 = cpu_to_le16(0);
1823         addsta->reserved2 = cpu_to_le16(0);
1824
1825         return (u16)sizeof(struct iwl4965_addsta_cmd);
1826 }
1827
1828 static inline u32 iwl4965_get_scd_ssn(struct iwl4965_tx_resp *tx_resp)
1829 {
1830         return le32_to_cpup(&tx_resp->u.status + tx_resp->frame_count) & MAX_SN;
1831 }
1832
1833 /**
1834  * iwl4965_tx_status_reply_tx - Handle Tx response for frames in aggregation queue
1835  */
1836 static int iwl4965_tx_status_reply_tx(struct iwl_priv *priv,
1837                                       struct iwl_ht_agg *agg,
1838                                       struct iwl4965_tx_resp *tx_resp,
1839                                       int txq_id, u16 start_idx)
1840 {
1841         u16 status;
1842         struct agg_tx_status *frame_status = tx_resp->u.agg_status;
1843         struct ieee80211_tx_info *info = NULL;
1844         struct ieee80211_hdr *hdr = NULL;
1845         u32 rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
1846         int i, sh, idx;
1847         u16 seq;
1848         if (agg->wait_for_ba)
1849                 IWL_DEBUG_TX_REPLY(priv, "got tx response w/o block-ack\n");
1850
1851         agg->frame_count = tx_resp->frame_count;
1852         agg->start_idx = start_idx;
1853         agg->rate_n_flags = rate_n_flags;
1854         agg->bitmap = 0;
1855
1856         /* num frames attempted by Tx command */
1857         if (agg->frame_count == 1) {
1858                 /* Only one frame was attempted; no block-ack will arrive */
1859                 status = le16_to_cpu(frame_status[0].status);
1860                 idx = start_idx;
1861
1862                 /* FIXME: code repetition */
1863                 IWL_DEBUG_TX_REPLY(priv, "FrameCnt = %d, StartIdx=%d idx=%d\n",
1864                                    agg->frame_count, agg->start_idx, idx);
1865
1866                 info = IEEE80211_SKB_CB(priv->txq[txq_id].txb[idx].skb[0]);
1867                 info->status.rates[0].count = tx_resp->failure_frame + 1;
1868                 info->flags &= ~IEEE80211_TX_CTL_AMPDU;
1869                 info->flags |= iwl_tx_status_to_mac80211(status);
1870                 iwl_hwrate_to_tx_control(priv, rate_n_flags, info);
1871                 /* FIXME: code repetition end */
1872
1873                 IWL_DEBUG_TX_REPLY(priv, "1 Frame 0x%x failure :%d\n",
1874                                     status & 0xff, tx_resp->failure_frame);
1875                 IWL_DEBUG_TX_REPLY(priv, "Rate Info rate_n_flags=%x\n", rate_n_flags);
1876
1877                 agg->wait_for_ba = 0;
1878         } else {
1879                 /* Two or more frames were attempted; expect block-ack */
1880                 u64 bitmap = 0;
1881                 int start = agg->start_idx;
1882
1883                 /* Construct bit-map of pending frames within Tx window */
1884                 for (i = 0; i < agg->frame_count; i++) {
1885                         u16 sc;
1886                         status = le16_to_cpu(frame_status[i].status);
1887                         seq  = le16_to_cpu(frame_status[i].sequence);
1888                         idx = SEQ_TO_INDEX(seq);
1889                         txq_id = SEQ_TO_QUEUE(seq);
1890
1891                         if (status & (AGG_TX_STATE_FEW_BYTES_MSK |
1892                                       AGG_TX_STATE_ABORT_MSK))
1893                                 continue;
1894
1895                         IWL_DEBUG_TX_REPLY(priv, "FrameCnt = %d, txq_id=%d idx=%d\n",
1896                                            agg->frame_count, txq_id, idx);
1897
1898                         hdr = iwl_tx_queue_get_hdr(priv, txq_id, idx);
1899                         if (!hdr) {
1900                                 IWL_ERR(priv,
1901                                         "BUG_ON idx doesn't point to valid skb"
1902                                         " idx=%d, txq_id=%d\n", idx, txq_id);
1903                                 return -1;
1904                         }
1905
1906                         sc = le16_to_cpu(hdr->seq_ctrl);
1907                         if (idx != (SEQ_TO_SN(sc) & 0xff)) {
1908                                 IWL_ERR(priv,
1909                                         "BUG_ON idx doesn't match seq control"
1910                                         " idx=%d, seq_idx=%d, seq=%d\n",
1911                                         idx, SEQ_TO_SN(sc), hdr->seq_ctrl);
1912                                 return -1;
1913                         }
1914
1915                         IWL_DEBUG_TX_REPLY(priv, "AGG Frame i=%d idx %d seq=%d\n",
1916                                            i, idx, SEQ_TO_SN(sc));
1917
1918                         sh = idx - start;
1919                         if (sh > 64) {
1920                                 sh = (start - idx) + 0xff;
1921                                 bitmap = bitmap << sh;
1922                                 sh = 0;
1923                                 start = idx;
1924                         } else if (sh < -64)
1925                                 sh  = 0xff - (start - idx);
1926                         else if (sh < 0) {
1927                                 sh = start - idx;
1928                                 start = idx;
1929                                 bitmap = bitmap << sh;
1930                                 sh = 0;
1931                         }
1932                         bitmap |= 1ULL << sh;
1933                         IWL_DEBUG_TX_REPLY(priv, "start=%d bitmap=0x%llx\n",
1934                                            start, (unsigned long long)bitmap);
1935                 }
1936
1937                 agg->bitmap = bitmap;
1938                 agg->start_idx = start;
1939                 IWL_DEBUG_TX_REPLY(priv, "Frames %d start_idx=%d bitmap=0x%llx\n",
1940                                    agg->frame_count, agg->start_idx,
1941                                    (unsigned long long)agg->bitmap);
1942
1943                 if (bitmap)
1944                         agg->wait_for_ba = 1;
1945         }
1946         return 0;
1947 }
1948
1949 /**
1950  * iwl4965_rx_reply_tx - Handle standard (non-aggregation) Tx response
1951  */
1952 static void iwl4965_rx_reply_tx(struct iwl_priv *priv,
1953                                 struct iwl_rx_mem_buffer *rxb)
1954 {
1955         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1956         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
1957         int txq_id = SEQ_TO_QUEUE(sequence);
1958         int index = SEQ_TO_INDEX(sequence);
1959         struct iwl_tx_queue *txq = &priv->txq[txq_id];
1960         struct ieee80211_hdr *hdr;
1961         struct ieee80211_tx_info *info;
1962         struct iwl4965_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
1963         u32  status = le32_to_cpu(tx_resp->u.status);
1964         int tid = MAX_TID_COUNT;
1965         int sta_id;
1966         int freed;
1967         u8 *qc = NULL;
1968
1969         if ((index >= txq->q.n_bd) || (iwl_queue_used(&txq->q, index) == 0)) {
1970                 IWL_ERR(priv, "Read index for DMA queue txq_id (%d) index %d "
1971                           "is out of range [0-%d] %d %d\n", txq_id,
1972                           index, txq->q.n_bd, txq->q.write_ptr,
1973                           txq->q.read_ptr);
1974                 return;
1975         }
1976
1977         info = IEEE80211_SKB_CB(txq->txb[txq->q.read_ptr].skb[0]);
1978         memset(&info->status, 0, sizeof(info->status));
1979
1980         hdr = iwl_tx_queue_get_hdr(priv, txq_id, index);
1981         if (ieee80211_is_data_qos(hdr->frame_control)) {
1982                 qc = ieee80211_get_qos_ctl(hdr);
1983                 tid = qc[0] & 0xf;
1984         }
1985
1986         sta_id = iwl_get_ra_sta_id(priv, hdr);
1987         if (txq->sched_retry && unlikely(sta_id == IWL_INVALID_STATION)) {
1988                 IWL_ERR(priv, "Station not known\n");
1989                 return;
1990         }
1991
1992         if (txq->sched_retry) {
1993                 const u32 scd_ssn = iwl4965_get_scd_ssn(tx_resp);
1994                 struct iwl_ht_agg *agg = NULL;
1995
1996                 WARN_ON(!qc);
1997
1998                 agg = &priv->stations[sta_id].tid[tid].agg;
1999
2000                 iwl4965_tx_status_reply_tx(priv, agg, tx_resp, txq_id, index);
2001
2002                 /* check if BAR is needed */
2003                 if ((tx_resp->frame_count == 1) && !iwl_is_tx_success(status))
2004                         info->flags |= IEEE80211_TX_STAT_AMPDU_NO_BACK;
2005
2006                 if (txq->q.read_ptr != (scd_ssn & 0xff)) {
2007                         index = iwl_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd);
2008                         IWL_DEBUG_TX_REPLY(priv, "Retry scheduler reclaim scd_ssn "
2009                                            "%d index %d\n", scd_ssn , index);
2010                         freed = iwl_tx_queue_reclaim(priv, txq_id, index);
2011                         priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
2012
2013                         if (priv->mac80211_registered &&
2014                             (iwl_queue_space(&txq->q) > txq->q.low_mark) &&
2015                             (agg->state != IWL_EMPTYING_HW_QUEUE_DELBA)) {
2016                                 if (agg->state == IWL_AGG_OFF)
2017                                         iwl_wake_queue(priv, txq_id);
2018                                 else
2019                                         iwl_wake_queue(priv, txq->swq_id);
2020                         }
2021                 }
2022         } else {
2023                 info->status.rates[0].count = tx_resp->failure_frame + 1;
2024                 info->flags |= iwl_tx_status_to_mac80211(status);
2025                 iwl_hwrate_to_tx_control(priv,
2026                                         le32_to_cpu(tx_resp->rate_n_flags),
2027                                         info);
2028
2029                 IWL_DEBUG_TX_REPLY(priv, "TXQ %d status %s (0x%08x) "
2030                                    "rate_n_flags 0x%x retries %d\n",
2031                                    txq_id,
2032                                    iwl_get_tx_fail_reason(status), status,
2033                                    le32_to_cpu(tx_resp->rate_n_flags),
2034                                    tx_resp->failure_frame);
2035
2036                 freed = iwl_tx_queue_reclaim(priv, txq_id, index);
2037                 if (qc && likely(sta_id != IWL_INVALID_STATION))
2038                         priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
2039
2040                 if (priv->mac80211_registered &&
2041                     (iwl_queue_space(&txq->q) > txq->q.low_mark))
2042                         iwl_wake_queue(priv, txq_id);
2043         }
2044
2045         if (qc && likely(sta_id != IWL_INVALID_STATION))
2046                 iwl_txq_check_empty(priv, sta_id, tid, txq_id);
2047
2048         if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
2049                 IWL_ERR(priv, "TODO:  Implement Tx ABORT REQUIRED!!!\n");
2050 }
2051
2052 static int iwl4965_calc_rssi(struct iwl_priv *priv,
2053                              struct iwl_rx_phy_res *rx_resp)
2054 {
2055         /* data from PHY/DSP regarding signal strength, etc.,
2056          *   contents are always there, not configurable by host.  */
2057         struct iwl4965_rx_non_cfg_phy *ncphy =
2058             (struct iwl4965_rx_non_cfg_phy *)rx_resp->non_cfg_phy_buf;
2059         u32 agc = (le16_to_cpu(ncphy->agc_info) & IWL49_AGC_DB_MASK)
2060                         >> IWL49_AGC_DB_POS;
2061
2062         u32 valid_antennae =
2063             (le16_to_cpu(rx_resp->phy_flags) & IWL49_RX_PHY_FLAGS_ANTENNAE_MASK)
2064                         >> IWL49_RX_PHY_FLAGS_ANTENNAE_OFFSET;
2065         u8 max_rssi = 0;
2066         u32 i;
2067
2068         /* Find max rssi among 3 possible receivers.
2069          * These values are measured by the digital signal processor (DSP).
2070          * They should stay fairly constant even as the signal strength varies,
2071          *   if the radio's automatic gain control (AGC) is working right.
2072          * AGC value (see below) will provide the "interesting" info. */
2073         for (i = 0; i < 3; i++)
2074                 if (valid_antennae & (1 << i))
2075                         max_rssi = max(ncphy->rssi_info[i << 1], max_rssi);
2076
2077         IWL_DEBUG_STATS(priv, "Rssi In A %d B %d C %d Max %d AGC dB %d\n",
2078                 ncphy->rssi_info[0], ncphy->rssi_info[2], ncphy->rssi_info[4],
2079                 max_rssi, agc);
2080
2081         /* dBm = max_rssi dB - agc dB - constant.
2082          * Higher AGC (higher radio gain) means lower signal. */
2083         return max_rssi - agc - IWL49_RSSI_OFFSET;
2084 }
2085
2086
2087 /* Set up 4965-specific Rx frame reply handlers */
2088 static void iwl4965_rx_handler_setup(struct iwl_priv *priv)
2089 {
2090         /* Legacy Rx frames */
2091         priv->rx_handlers[REPLY_RX] = iwl_rx_reply_rx;
2092         /* Tx response */
2093         priv->rx_handlers[REPLY_TX] = iwl4965_rx_reply_tx;
2094 }
2095
2096 static void iwl4965_setup_deferred_work(struct iwl_priv *priv)
2097 {
2098         INIT_WORK(&priv->txpower_work, iwl4965_bg_txpower_work);
2099 }
2100
2101 static void iwl4965_cancel_deferred_work(struct iwl_priv *priv)
2102 {
2103         cancel_work_sync(&priv->txpower_work);
2104 }
2105
2106 #define IWL4965_UCODE_GET(item)                                         \
2107 static u32 iwl4965_ucode_get_##item(const struct iwl_ucode_header *ucode,\
2108                                     u32 api_ver)                        \
2109 {                                                                       \
2110         return le32_to_cpu(ucode->u.v1.item);                           \
2111 }
2112
2113 static u32 iwl4965_ucode_get_header_size(u32 api_ver)
2114 {
2115         return UCODE_HEADER_SIZE(1);
2116 }
2117 static u32 iwl4965_ucode_get_build(const struct iwl_ucode_header *ucode,
2118                                    u32 api_ver)
2119 {
2120         return 0;
2121 }
2122 static u8 *iwl4965_ucode_get_data(const struct iwl_ucode_header *ucode,
2123                                   u32 api_ver)
2124 {
2125         return (u8 *) ucode->u.v1.data;
2126 }
2127
2128 IWL4965_UCODE_GET(inst_size);
2129 IWL4965_UCODE_GET(data_size);
2130 IWL4965_UCODE_GET(init_size);
2131 IWL4965_UCODE_GET(init_data_size);
2132 IWL4965_UCODE_GET(boot_size);
2133
2134 static struct iwl_hcmd_ops iwl4965_hcmd = {
2135         .rxon_assoc = iwl4965_send_rxon_assoc,
2136         .commit_rxon = iwl_commit_rxon,
2137         .set_rxon_chain = iwl_set_rxon_chain,
2138 };
2139
2140 static struct iwl_ucode_ops iwl4965_ucode = {
2141         .get_header_size = iwl4965_ucode_get_header_size,
2142         .get_build = iwl4965_ucode_get_build,
2143         .get_inst_size = iwl4965_ucode_get_inst_size,
2144         .get_data_size = iwl4965_ucode_get_data_size,
2145         .get_init_size = iwl4965_ucode_get_init_size,
2146         .get_init_data_size = iwl4965_ucode_get_init_data_size,
2147         .get_boot_size = iwl4965_ucode_get_boot_size,
2148         .get_data = iwl4965_ucode_get_data,
2149 };
2150 static struct iwl_hcmd_utils_ops iwl4965_hcmd_utils = {
2151         .get_hcmd_size = iwl4965_get_hcmd_size,
2152         .build_addsta_hcmd = iwl4965_build_addsta_hcmd,
2153         .chain_noise_reset = iwl4965_chain_noise_reset,
2154         .gain_computation = iwl4965_gain_computation,
2155         .rts_tx_cmd_flag = iwlcore_rts_tx_cmd_flag,
2156         .calc_rssi = iwl4965_calc_rssi,
2157 };
2158
2159 static struct iwl_lib_ops iwl4965_lib = {
2160         .set_hw_params = iwl4965_hw_set_hw_params,
2161         .txq_update_byte_cnt_tbl = iwl4965_txq_update_byte_cnt_tbl,
2162         .txq_set_sched = iwl4965_txq_set_sched,
2163         .txq_agg_enable = iwl4965_txq_agg_enable,
2164         .txq_agg_disable = iwl4965_txq_agg_disable,
2165         .txq_attach_buf_to_tfd = iwl_hw_txq_attach_buf_to_tfd,
2166         .txq_free_tfd = iwl_hw_txq_free_tfd,
2167         .txq_init = iwl_hw_tx_queue_init,
2168         .rx_handler_setup = iwl4965_rx_handler_setup,
2169         .setup_deferred_work = iwl4965_setup_deferred_work,
2170         .cancel_deferred_work = iwl4965_cancel_deferred_work,
2171         .is_valid_rtc_data_addr = iwl4965_hw_valid_rtc_data_addr,
2172         .alive_notify = iwl4965_alive_notify,
2173         .init_alive_start = iwl4965_init_alive_start,
2174         .load_ucode = iwl4965_load_bsm,
2175         .dump_nic_event_log = iwl_dump_nic_event_log,
2176         .dump_nic_error_log = iwl_dump_nic_error_log,
2177         .set_channel_switch = iwl4965_hw_channel_switch,
2178         .apm_ops = {
2179                 .init = iwl_apm_init,
2180                 .stop = iwl_apm_stop,
2181                 .config = iwl4965_nic_config,
2182                 .set_pwr_src = iwl_set_pwr_src,
2183         },
2184         .eeprom_ops = {
2185                 .regulatory_bands = {
2186                         EEPROM_REGULATORY_BAND_1_CHANNELS,
2187                         EEPROM_REGULATORY_BAND_2_CHANNELS,
2188                         EEPROM_REGULATORY_BAND_3_CHANNELS,
2189                         EEPROM_REGULATORY_BAND_4_CHANNELS,
2190                         EEPROM_REGULATORY_BAND_5_CHANNELS,
2191                         EEPROM_4965_REGULATORY_BAND_24_HT40_CHANNELS,
2192                         EEPROM_4965_REGULATORY_BAND_52_HT40_CHANNELS
2193                 },
2194                 .verify_signature  = iwlcore_eeprom_verify_signature,
2195                 .acquire_semaphore = iwlcore_eeprom_acquire_semaphore,
2196                 .release_semaphore = iwlcore_eeprom_release_semaphore,
2197                 .calib_version = iwl4965_eeprom_calib_version,
2198                 .query_addr = iwlcore_eeprom_query_addr,
2199         },
2200         .send_tx_power  = iwl4965_send_tx_power,
2201         .update_chain_flags = iwl_update_chain_flags,
2202         .post_associate = iwl_post_associate,
2203         .config_ap = iwl_config_ap,
2204         .isr = iwl_isr_legacy,
2205         .temp_ops = {
2206                 .temperature = iwl4965_temperature_calib,
2207                 .set_ct_kill = iwl4965_set_ct_threshold,
2208         },
2209 };
2210
2211 static const struct iwl_ops iwl4965_ops = {
2212         .ucode = &iwl4965_ucode,
2213         .lib = &iwl4965_lib,
2214         .hcmd = &iwl4965_hcmd,
2215         .utils = &iwl4965_hcmd_utils,
2216         .led = &iwlagn_led_ops,
2217 };
2218
2219 struct iwl_cfg iwl4965_agn_cfg = {
2220         .name = "4965AGN",
2221         .fw_name_pre = IWL4965_FW_PRE,
2222         .ucode_api_max = IWL4965_UCODE_API_MAX,
2223         .ucode_api_min = IWL4965_UCODE_API_MIN,
2224         .sku = IWL_SKU_A|IWL_SKU_G|IWL_SKU_N,
2225         .eeprom_size = IWL4965_EEPROM_IMG_SIZE,
2226         .eeprom_ver = EEPROM_4965_EEPROM_VERSION,
2227         .eeprom_calib_ver = EEPROM_4965_TX_POWER_VERSION,
2228         .ops = &iwl4965_ops,
2229         .num_of_queues = IWL49_NUM_QUEUES,
2230         .num_of_ampdu_queues = IWL49_NUM_AMPDU_QUEUES,
2231         .mod_params = &iwl4965_mod_params,
2232         .valid_tx_ant = ANT_AB,
2233         .valid_rx_ant = ANT_ABC,
2234         .pll_cfg_val = 0,
2235         .set_l0s = true,
2236         .use_bsm = true,
2237         .use_isr_legacy = true,
2238         .ht_greenfield_support = false,
2239         .broken_powersave = true,
2240         .led_compensation = 61,
2241         .chain_noise_num_beacons = IWL4965_CAL_NUM_BEACONS,
2242 };
2243
2244 /* Module firmware */
2245 MODULE_FIRMWARE(IWL4965_MODULE_FIRMWARE(IWL4965_UCODE_API_MAX));
2246
2247 module_param_named(antenna, iwl4965_mod_params.antenna, int, S_IRUGO);
2248 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
2249 module_param_named(swcrypto, iwl4965_mod_params.sw_crypto, int, S_IRUGO);
2250 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
2251 module_param_named(
2252         disable_hw_scan, iwl4965_mod_params.disable_hw_scan, int, S_IRUGO);
2253 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
2254
2255 module_param_named(queues_num, iwl4965_mod_params.num_of_queues, int, S_IRUGO);
2256 MODULE_PARM_DESC(queues_num, "number of hw queues.");
2257 /* 11n */
2258 module_param_named(11n_disable, iwl4965_mod_params.disable_11n, int, S_IRUGO);
2259 MODULE_PARM_DESC(11n_disable, "disable 11n functionality");
2260 module_param_named(amsdu_size_8K, iwl4965_mod_params.amsdu_size_8K,
2261                    int, S_IRUGO);
2262 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
2263
2264 module_param_named(fw_restart4965, iwl4965_mod_params.restart_fw, int, S_IRUGO);
2265 MODULE_PARM_DESC(fw_restart4965, "restart firmware in case of error");