blob: b45905fca76be853e5415f9c1350b89e4deb0955 [file] [log] [blame]
Zhu Yib481de92007-09-25 17:54:57 -07001/******************************************************************************
2 *
Wey-Yi Guybe663ab2011-02-21 11:27:26 -08003 * Copyright(c) 2003 - 2011 Intel Corporation. All rights reserved.
Zhu Yib481de92007-09-25 17:54:57 -07004 *
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
12 * more details.
13 *
14 * You should have received a copy of the GNU General Public License along with
15 * this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
17 *
18 * The full GNU General Public License is included in this distribution in the
19 * file called LICENSE.
20 *
21 * Contact Information:
Winkler, Tomas759ef892008-12-09 11:28:58 -080022 * Intel Linux Wireless <ilw@linux.intel.com>
Zhu Yib481de92007-09-25 17:54:57 -070023 * 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>
Zhu Yib481de92007-09-25 17:54:57 -070029#include <linux/init.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090030#include <linux/slab.h>
Zhu Yib481de92007-09-25 17:54:57 -070031#include <linux/pci.h>
32#include <linux/dma-mapping.h>
33#include <linux/delay.h>
Alexey Dobriyand43c36d2009-10-07 17:09:06 +040034#include <linux/sched.h>
Zhu Yib481de92007-09-25 17:54:57 -070035#include <linux/skbuff.h>
36#include <linux/netdevice.h>
Zhu Yib481de92007-09-25 17:54:57 -070037#include <linux/firmware.h>
Zhu Yib481de92007-09-25 17:54:57 -070038#include <linux/etherdevice.h>
Zhu Yi12342c42007-12-20 11:27:32 +080039#include <asm/unaligned.h>
40#include <net/mac80211.h>
Zhu Yib481de92007-09-25 17:54:57 -070041
Winkler, Tomasdbb66542008-12-22 11:31:14 +080042#include "iwl-fh.h"
Tomas Winkler600c0e12008-12-19 10:37:04 +080043#include "iwl-commands.h"
Samuel Ortiz17f841c2009-01-23 13:45:20 -080044#include "iwl-sta.h"
Samuel Ortize6148912009-01-23 13:45:15 -080045#include "iwl-eeprom.h"
Kolekar, Abhijeet5747d472008-12-19 10:37:18 +080046#include "iwl-core.h"
Reinette Chatre4a6547c2010-02-18 22:03:02 -080047#include "iwl-helpers.h"
Johannes Berge932a602009-10-02 13:44:03 -070048#include "iwl-led.h"
Stanislaw Gruszka6bbb1372011-08-30 14:12:12 +020049#include "3945.h"
Zhu Yib481de92007-09-25 17:54:57 -070050
Stanislaw Gruszkaecce1f02011-08-29 17:05:28 +020051/* Send led command */
52static int il3945_send_led_cmd(struct il_priv *il,
53 struct il_led_cmd *led_cmd)
54{
55 struct il_host_cmd cmd = {
Stanislaw Gruszka4d69c752011-08-30 15:26:35 +020056 .id = C_LEDS,
Stanislaw Gruszkaecce1f02011-08-29 17:05:28 +020057 .len = sizeof(struct il_led_cmd),
58 .data = led_cmd,
59 .flags = CMD_ASYNC,
60 .callback = NULL,
61 };
62
63 return il_send_cmd(il, &cmd);
64}
65
66const struct il_led_ops il3945_led_ops = {
67 .cmd = il3945_send_led_cmd,
68};
69
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +020070#define IL_DECLARE_RATE_INFO(r, ip, in, rp, rn, pp, np) \
Stanislaw Gruszka2d09b062011-08-26 16:10:40 +020071 [RATE_##r##M_IDX] = { RATE_##r##M_PLCP, \
Stanislaw Gruszka2eb05812011-08-26 16:07:43 +020072 RATE_##r##M_IEEE, \
Stanislaw Gruszka2d09b062011-08-26 16:10:40 +020073 RATE_##ip##M_IDX, \
74 RATE_##in##M_IDX, \
75 RATE_##rp##M_IDX, \
76 RATE_##rn##M_IDX, \
77 RATE_##pp##M_IDX, \
78 RATE_##np##M_IDX, \
Stanislaw Gruszka3b98c7f2011-08-26 16:29:35 +020079 RATE_##r##M_IDX_TBL, \
80 RATE_##ip##M_IDX_TBL }
Zhu Yib481de92007-09-25 17:54:57 -070081
82/*
83 * Parameter order:
84 * rate, prev rate, next rate, prev tgg rate, next tgg rate
85 *
86 * If there isn't a valid next or previous rate then INV is used which
Stanislaw Gruszka2eb05812011-08-26 16:07:43 +020087 * maps to RATE_INVALID
Zhu Yib481de92007-09-25 17:54:57 -070088 *
89 */
Stanislaw Gruszka2eb05812011-08-26 16:07:43 +020090const struct il3945_rate_info il3945_rates[RATE_COUNT_3945] = {
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +020091 IL_DECLARE_RATE_INFO(1, INV, 2, INV, 2, INV, 2), /* 1mbps */
92 IL_DECLARE_RATE_INFO(2, 1, 5, 1, 5, 1, 5), /* 2mbps */
93 IL_DECLARE_RATE_INFO(5, 2, 6, 2, 11, 2, 11), /*5.5mbps */
94 IL_DECLARE_RATE_INFO(11, 9, 12, 5, 12, 5, 18), /* 11mbps */
95 IL_DECLARE_RATE_INFO(6, 5, 9, 5, 11, 5, 11), /* 6mbps */
96 IL_DECLARE_RATE_INFO(9, 6, 11, 5, 11, 5, 11), /* 9mbps */
97 IL_DECLARE_RATE_INFO(12, 11, 18, 11, 18, 11, 18), /* 12mbps */
98 IL_DECLARE_RATE_INFO(18, 12, 24, 12, 24, 11, 24), /* 18mbps */
99 IL_DECLARE_RATE_INFO(24, 18, 36, 18, 36, 18, 36), /* 24mbps */
100 IL_DECLARE_RATE_INFO(36, 24, 48, 24, 48, 24, 48), /* 36mbps */
101 IL_DECLARE_RATE_INFO(48, 36, 54, 36, 54, 36, 54), /* 48mbps */
102 IL_DECLARE_RATE_INFO(54, 48, INV, 48, INV, 48, INV),/* 54mbps */
Zhu Yib481de92007-09-25 17:54:57 -0700103};
104
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +0100105static inline u8 il3945_get_prev_ieee_rate(u8 rate_idx)
Johannes Berg635b85b2010-09-22 18:02:04 +0200106{
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +0100107 u8 rate = il3945_rates[rate_idx].prev_ieee;
Johannes Berg635b85b2010-09-22 18:02:04 +0200108
Stanislaw Gruszka2eb05812011-08-26 16:07:43 +0200109 if (rate == RATE_INVALID)
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +0100110 rate = rate_idx;
Johannes Berg635b85b2010-09-22 18:02:04 +0200111 return rate;
112}
113
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +0200114/* 1 = enable the il3945_disable_events() function */
115#define IL_EVT_DISABLE (0)
116#define IL_EVT_DISABLE_SIZE (1532/32)
Zhu Yib481de92007-09-25 17:54:57 -0700117
118/**
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +0200119 * il3945_disable_events - Disable selected events in uCode event log
Zhu Yib481de92007-09-25 17:54:57 -0700120 *
121 * Disable an event by writing "1"s into "disable"
122 * bitmap in SRAM. Bit position corresponds to Event # (id/type).
123 * Default values of 0 enable uCode events to be logged.
124 * Use for only special debugging. This function is just a placeholder as-is,
125 * you'll need to provide the special bits! ...
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +0200126 * ... and set IL_EVT_DISABLE to 1. */
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200127void il3945_disable_events(struct il_priv *il)
Zhu Yib481de92007-09-25 17:54:57 -0700128{
Zhu Yib481de92007-09-25 17:54:57 -0700129 int i;
130 u32 base; /* SRAM address of event log header */
131 u32 disable_ptr; /* SRAM address of event-disable bitmap array */
132 u32 array_size; /* # of u32 entries in array */
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +0200133 static const u32 evt_disable[IL_EVT_DISABLE_SIZE] = {
Zhu Yib481de92007-09-25 17:54:57 -0700134 0x00000000, /* 31 - 0 Event id numbers */
135 0x00000000, /* 63 - 32 */
136 0x00000000, /* 95 - 64 */
137 0x00000000, /* 127 - 96 */
138 0x00000000, /* 159 - 128 */
139 0x00000000, /* 191 - 160 */
140 0x00000000, /* 223 - 192 */
141 0x00000000, /* 255 - 224 */
142 0x00000000, /* 287 - 256 */
143 0x00000000, /* 319 - 288 */
144 0x00000000, /* 351 - 320 */
145 0x00000000, /* 383 - 352 */
146 0x00000000, /* 415 - 384 */
147 0x00000000, /* 447 - 416 */
148 0x00000000, /* 479 - 448 */
149 0x00000000, /* 511 - 480 */
150 0x00000000, /* 543 - 512 */
151 0x00000000, /* 575 - 544 */
152 0x00000000, /* 607 - 576 */
153 0x00000000, /* 639 - 608 */
154 0x00000000, /* 671 - 640 */
155 0x00000000, /* 703 - 672 */
156 0x00000000, /* 735 - 704 */
157 0x00000000, /* 767 - 736 */
158 0x00000000, /* 799 - 768 */
159 0x00000000, /* 831 - 800 */
160 0x00000000, /* 863 - 832 */
161 0x00000000, /* 895 - 864 */
162 0x00000000, /* 927 - 896 */
163 0x00000000, /* 959 - 928 */
164 0x00000000, /* 991 - 960 */
165 0x00000000, /* 1023 - 992 */
166 0x00000000, /* 1055 - 1024 */
167 0x00000000, /* 1087 - 1056 */
168 0x00000000, /* 1119 - 1088 */
169 0x00000000, /* 1151 - 1120 */
170 0x00000000, /* 1183 - 1152 */
171 0x00000000, /* 1215 - 1184 */
172 0x00000000, /* 1247 - 1216 */
173 0x00000000, /* 1279 - 1248 */
174 0x00000000, /* 1311 - 1280 */
175 0x00000000, /* 1343 - 1312 */
176 0x00000000, /* 1375 - 1344 */
177 0x00000000, /* 1407 - 1376 */
178 0x00000000, /* 1439 - 1408 */
179 0x00000000, /* 1471 - 1440 */
180 0x00000000, /* 1503 - 1472 */
181 };
182
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200183 base = le32_to_cpu(il->card_alive.log_event_table_ptr);
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +0200184 if (!il3945_hw_valid_rtc_data_addr(base)) {
Stanislaw Gruszka9406f792011-08-18 22:07:57 +0200185 IL_ERR("Invalid event log pointer 0x%08X\n", base);
Zhu Yib481de92007-09-25 17:54:57 -0700186 return;
187 }
188
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200189 disable_ptr = il_read_targ_mem(il, base + (4 * sizeof(u32)));
190 array_size = il_read_targ_mem(il, base + (5 * sizeof(u32)));
Zhu Yib481de92007-09-25 17:54:57 -0700191
Stanislaw Gruszka232913b2011-08-26 10:45:16 +0200192 if (IL_EVT_DISABLE && array_size == IL_EVT_DISABLE_SIZE) {
Stanislaw Gruszka58de00a2011-11-15 11:21:01 +0100193 D_INFO("Disabling selected uCode log events at 0x%x\n",
Zhu Yib481de92007-09-25 17:54:57 -0700194 disable_ptr);
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +0200195 for (i = 0; i < IL_EVT_DISABLE_SIZE; i++)
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200196 il_write_targ_mem(il,
Tomas Winkleraf7cca22007-10-25 17:15:36 +0800197 disable_ptr + (i * sizeof(u32)),
198 evt_disable[i]);
Zhu Yib481de92007-09-25 17:54:57 -0700199
Zhu Yib481de92007-09-25 17:54:57 -0700200 } else {
Stanislaw Gruszka58de00a2011-11-15 11:21:01 +0100201 D_INFO("Selected uCode log events may be disabled\n");
202 D_INFO(" by writing \"1\"s into disable bitmap\n");
203 D_INFO(" in SRAM at 0x%x, size %d u32s\n",
Zhu Yib481de92007-09-25 17:54:57 -0700204 disable_ptr, array_size);
205 }
206
207}
208
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +0200209static int il3945_hwrate_to_plcp_idx(u8 plcp)
Tomas Winkler17744ff2008-03-02 01:52:00 +0200210{
211 int idx;
212
Stanislaw Gruszka2eb05812011-08-26 16:07:43 +0200213 for (idx = 0; idx < RATE_COUNT_3945; idx++)
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +0200214 if (il3945_rates[idx].plcp == plcp)
Tomas Winkler17744ff2008-03-02 01:52:00 +0200215 return idx;
216 return -1;
217}
218
Stanislaw Gruszkad3175162011-11-15 11:25:42 +0100219#ifdef CONFIG_IWLEGACY_DEBUG
Wey-Yi Guy04569cb2010-03-31 17:57:28 -0700220#define TX_STATUS_ENTRY(x) case TX_3945_STATUS_FAIL_ ## x: return #x
Tomas Winkler91c066f2008-03-06 17:36:55 -0800221
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +0200222static const char *il3945_get_tx_fail_reason(u32 status)
Tomas Winkler91c066f2008-03-06 17:36:55 -0800223{
224 switch (status & TX_STATUS_MSK) {
Wey-Yi Guy04569cb2010-03-31 17:57:28 -0700225 case TX_3945_STATUS_SUCCESS:
Tomas Winkler91c066f2008-03-06 17:36:55 -0800226 return "SUCCESS";
227 TX_STATUS_ENTRY(SHORT_LIMIT);
228 TX_STATUS_ENTRY(LONG_LIMIT);
229 TX_STATUS_ENTRY(FIFO_UNDERRUN);
230 TX_STATUS_ENTRY(MGMNT_ABORT);
231 TX_STATUS_ENTRY(NEXT_FRAG);
232 TX_STATUS_ENTRY(LIFE_EXPIRE);
233 TX_STATUS_ENTRY(DEST_PS);
234 TX_STATUS_ENTRY(ABORTED);
235 TX_STATUS_ENTRY(BT_RETRY);
236 TX_STATUS_ENTRY(STA_INVALID);
237 TX_STATUS_ENTRY(FRAG_DROPPED);
238 TX_STATUS_ENTRY(TID_DISABLE);
239 TX_STATUS_ENTRY(FRAME_FLUSHED);
240 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
241 TX_STATUS_ENTRY(TX_LOCKED);
242 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
243 }
244
245 return "UNKNOWN";
246}
247#else
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +0200248static inline const char *il3945_get_tx_fail_reason(u32 status)
Tomas Winkler91c066f2008-03-06 17:36:55 -0800249{
250 return "";
251}
252#endif
253
Johannes Berge6a98542008-10-21 12:40:02 +0200254/*
255 * get ieee prev rate from rate scale table.
256 * for A and B mode we need to overright prev
257 * value
258 */
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200259int il3945_rs_next_rate(struct il_priv *il, int rate)
Johannes Berge6a98542008-10-21 12:40:02 +0200260{
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +0200261 int next_rate = il3945_get_prev_ieee_rate(rate);
Johannes Berge6a98542008-10-21 12:40:02 +0200262
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200263 switch (il->band) {
Johannes Berge6a98542008-10-21 12:40:02 +0200264 case IEEE80211_BAND_5GHZ:
Stanislaw Gruszka2d09b062011-08-26 16:10:40 +0200265 if (rate == RATE_12M_IDX)
266 next_rate = RATE_9M_IDX;
267 else if (rate == RATE_6M_IDX)
268 next_rate = RATE_6M_IDX;
Johannes Berge6a98542008-10-21 12:40:02 +0200269 break;
Abbas, Mohamed72627962008-12-05 07:58:37 -0800270 case IEEE80211_BAND_2GHZ:
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200271 if (!(il->_3945.sta_supp_rates & IL_OFDM_RATES_MASK) &&
Stanislaw Gruszka7c2cde22011-11-15 11:29:04 +0100272 il_is_associated(il)) {
Stanislaw Gruszka2d09b062011-08-26 16:10:40 +0200273 if (rate == RATE_11M_IDX)
274 next_rate = RATE_5M_IDX;
Abbas, Mohamed72627962008-12-05 07:58:37 -0800275 }
Johannes Berge6a98542008-10-21 12:40:02 +0200276 break;
Abbas, Mohamed72627962008-12-05 07:58:37 -0800277
Johannes Berge6a98542008-10-21 12:40:02 +0200278 default:
279 break;
280 }
281
282 return next_rate;
283}
284
Tomas Winkler91c066f2008-03-06 17:36:55 -0800285
286/**
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +0200287 * il3945_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
Tomas Winkler91c066f2008-03-06 17:36:55 -0800288 *
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +0100289 * When FW advances 'R' idx, all entries between old and new 'R' idx
Tomas Winkler91c066f2008-03-06 17:36:55 -0800290 * need to be reclaimed. As result, some free space forms. If there is
291 * enough free space (> low mark), wake the stack that feeds us.
292 */
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200293static void il3945_tx_queue_reclaim(struct il_priv *il,
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +0100294 int txq_id, int idx)
Tomas Winkler91c066f2008-03-06 17:36:55 -0800295{
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200296 struct il_tx_queue *txq = &il->txq[txq_id];
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +0200297 struct il_queue *q = &txq->q;
298 struct il_tx_info *tx_info;
Tomas Winkler91c066f2008-03-06 17:36:55 -0800299
Stanislaw Gruszkad3175162011-11-15 11:25:42 +0100300 BUG_ON(txq_id == IL39_CMD_QUEUE_NUM);
Tomas Winkler91c066f2008-03-06 17:36:55 -0800301
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +0100302 for (idx = il_queue_inc_wrap(idx, q->n_bd);
303 q->read_ptr != idx;
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +0200304 q->read_ptr = il_queue_inc_wrap(q->read_ptr, q->n_bd)) {
Tomas Winkler91c066f2008-03-06 17:36:55 -0800305
306 tx_info = &txq->txb[txq->q.read_ptr];
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200307 ieee80211_tx_status_irqsafe(il->hw, tx_info->skb);
Johannes Bergff0d91c2010-05-17 02:37:34 -0700308 tx_info->skb = NULL;
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200309 il->cfg->ops->lib->txq_free_tfd(il, txq);
Tomas Winkler91c066f2008-03-06 17:36:55 -0800310 }
311
Stanislaw Gruszka232913b2011-08-26 10:45:16 +0200312 if (il_queue_space(q) > q->low_mark && txq_id >= 0 &&
Stanislaw Gruszkad3175162011-11-15 11:25:42 +0100313 txq_id != IL39_CMD_QUEUE_NUM && il->mac80211_registered)
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200314 il_wake_queue(il, txq);
Tomas Winkler91c066f2008-03-06 17:36:55 -0800315}
316
317/**
Stanislaw Gruszka6e9848b42011-08-30 15:45:31 +0200318 * il3945_hdl_tx - Handle Tx response
Tomas Winkler91c066f2008-03-06 17:36:55 -0800319 */
Stanislaw Gruszka6e9848b42011-08-30 15:45:31 +0200320static void il3945_hdl_tx(struct il_priv *il,
Stanislaw Gruszkab73bb5f2011-08-26 14:37:54 +0200321 struct il_rx_buf *rxb)
Tomas Winkler91c066f2008-03-06 17:36:55 -0800322{
Stanislaw Gruszkadcae1c62011-08-26 14:36:21 +0200323 struct il_rx_pkt *pkt = rxb_addr(rxb);
Tomas Winkler91c066f2008-03-06 17:36:55 -0800324 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
325 int txq_id = SEQ_TO_QUEUE(sequence);
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +0100326 int idx = SEQ_TO_IDX(sequence);
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200327 struct il_tx_queue *txq = &il->txq[txq_id];
Johannes Berge039fa42008-05-15 12:55:29 +0200328 struct ieee80211_tx_info *info;
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +0200329 struct il3945_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
Tomas Winkler91c066f2008-03-06 17:36:55 -0800330 u32 status = le32_to_cpu(tx_resp->status);
331 int rate_idx;
Abbas, Mohamed74221d02008-12-02 12:14:03 -0800332 int fail;
Tomas Winkler91c066f2008-03-06 17:36:55 -0800333
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +0100334 if (idx >= txq->q.n_bd || il_queue_used(&txq->q, idx) == 0) {
335 IL_ERR("Read idx for DMA queue txq_id (%d) idx %d "
Tomas Winkler91c066f2008-03-06 17:36:55 -0800336 "is out of range [0-%d] %d %d\n", txq_id,
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +0100337 idx, txq->q.n_bd, txq->q.write_ptr,
Tomas Winkler91c066f2008-03-06 17:36:55 -0800338 txq->q.read_ptr);
339 return;
340 }
341
Stanislaw Gruszka22de94d2010-12-03 15:41:48 +0100342 txq->time_stamp = jiffies;
Johannes Bergff0d91c2010-05-17 02:37:34 -0700343 info = IEEE80211_SKB_CB(txq->txb[txq->q.read_ptr].skb);
Johannes Berge6a98542008-10-21 12:40:02 +0200344 ieee80211_tx_info_clear_status(info);
Tomas Winkler91c066f2008-03-06 17:36:55 -0800345
Johannes Berge6a98542008-10-21 12:40:02 +0200346 /* Fill the MRR chain with some info about on-chip retransmissions */
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +0200347 rate_idx = il3945_hwrate_to_plcp_idx(tx_resp->rate);
Johannes Berge6a98542008-10-21 12:40:02 +0200348 if (info->band == IEEE80211_BAND_5GHZ)
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +0200349 rate_idx -= IL_FIRST_OFDM_RATE;
Johannes Berge6a98542008-10-21 12:40:02 +0200350
351 fail = tx_resp->failure_frame;
Johannes Berge6a98542008-10-21 12:40:02 +0200352
Abbas, Mohamed74221d02008-12-02 12:14:03 -0800353 info->status.rates[0].idx = rate_idx;
354 info->status.rates[0].count = fail + 1; /* add final attempt */
Johannes Berge6a98542008-10-21 12:40:02 +0200355
Tomas Winkler91c066f2008-03-06 17:36:55 -0800356 /* tx_status->rts_retry_count = tx_resp->failure_rts; */
Johannes Berge039fa42008-05-15 12:55:29 +0200357 info->flags |= ((status & TX_STATUS_MSK) == TX_STATUS_SUCCESS) ?
358 IEEE80211_TX_STAT_ACK : 0;
Tomas Winkler91c066f2008-03-06 17:36:55 -0800359
Stanislaw Gruszka58de00a2011-11-15 11:21:01 +0100360 D_TX("Tx queue %d Status %s (0x%08x) plcp rate %d retries %d\n",
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +0200361 txq_id, il3945_get_tx_fail_reason(status), status,
Tomas Winkler91c066f2008-03-06 17:36:55 -0800362 tx_resp->rate, tx_resp->failure_frame);
363
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +0100364 D_TX_REPLY("Tx queue reclaim %d\n", idx);
365 il3945_tx_queue_reclaim(il, txq_id, idx);
Tomas Winkler91c066f2008-03-06 17:36:55 -0800366
Johannes Berga313f382010-09-22 18:02:12 +0200367 if (status & TX_ABORT_REQUIRED_MSK)
Stanislaw Gruszka9406f792011-08-18 22:07:57 +0200368 IL_ERR("TODO: Implement Tx ABORT REQUIRED!!!\n");
Tomas Winkler91c066f2008-03-06 17:36:55 -0800369}
370
371
372
Zhu Yib481de92007-09-25 17:54:57 -0700373/*****************************************************************************
374 *
375 * Intel PRO/Wireless 3945ABG/BG Network Connection
376 *
377 * RX handler implementations
378 *
Zhu Yib481de92007-09-25 17:54:57 -0700379 *****************************************************************************/
Stanislaw Gruszkad3175162011-11-15 11:25:42 +0100380#ifdef CONFIG_IWLEGACY_DEBUGFS
Stanislaw Gruszkaebf0d902011-08-26 15:43:47 +0200381static void il3945_accumulative_stats(struct il_priv *il,
Abhijeet Kolekar17f36fc2010-04-16 10:03:54 -0700382 __le32 *stats)
383{
384 int i;
385 __le32 *prev_stats;
386 u32 *accum_stats;
387 u32 *delta, *max_delta;
388
Stanislaw Gruszkaebf0d902011-08-26 15:43:47 +0200389 prev_stats = (__le32 *)&il->_3945.stats;
390 accum_stats = (u32 *)&il->_3945.accum_stats;
391 delta = (u32 *)&il->_3945.delta_stats;
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200392 max_delta = (u32 *)&il->_3945.max_delta;
Abhijeet Kolekar17f36fc2010-04-16 10:03:54 -0700393
Stanislaw Gruszkaebf0d902011-08-26 15:43:47 +0200394 for (i = sizeof(__le32); i < sizeof(struct il3945_notif_stats);
Abhijeet Kolekar17f36fc2010-04-16 10:03:54 -0700395 i += sizeof(__le32), stats++, prev_stats++, delta++,
396 max_delta++, accum_stats++) {
397 if (le32_to_cpu(*stats) > le32_to_cpu(*prev_stats)) {
398 *delta = (le32_to_cpu(*stats) -
399 le32_to_cpu(*prev_stats));
400 *accum_stats += *delta;
401 if (*delta > *max_delta)
402 *max_delta = *delta;
403 }
404 }
405
Stanislaw Gruszkaebf0d902011-08-26 15:43:47 +0200406 /* reset accumulative stats for "no-counter" type stats */
407 il->_3945.accum_stats.general.temperature =
408 il->_3945.stats.general.temperature;
409 il->_3945.accum_stats.general.ttl_timestamp =
410 il->_3945.stats.general.ttl_timestamp;
Abhijeet Kolekar17f36fc2010-04-16 10:03:54 -0700411}
412#endif
Zhu Yib481de92007-09-25 17:54:57 -0700413
Stanislaw Gruszkaebf0d902011-08-26 15:43:47 +0200414void il3945_hw_rx_stats(struct il_priv *il,
Stanislaw Gruszkab73bb5f2011-08-26 14:37:54 +0200415 struct il_rx_buf *rxb)
Zhu Yib481de92007-09-25 17:54:57 -0700416{
Stanislaw Gruszkadcae1c62011-08-26 14:36:21 +0200417 struct il_rx_pkt *pkt = rxb_addr(rxb);
Abhijeet Kolekar17f36fc2010-04-16 10:03:54 -0700418
Stanislaw Gruszka58de00a2011-11-15 11:21:01 +0100419 D_RX("Statistics notification received (%d vs %d).\n",
Stanislaw Gruszkaebf0d902011-08-26 15:43:47 +0200420 (int)sizeof(struct il3945_notif_stats),
Daniel C Halperin396887a2009-08-13 13:31:01 -0700421 le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK);
Stanislaw Gruszkad3175162011-11-15 11:25:42 +0100422#ifdef CONFIG_IWLEGACY_DEBUGFS
Stanislaw Gruszkaebf0d902011-08-26 15:43:47 +0200423 il3945_accumulative_stats(il, (__le32 *)&pkt->u.raw);
Abhijeet Kolekar17f36fc2010-04-16 10:03:54 -0700424#endif
Zhu Yib481de92007-09-25 17:54:57 -0700425
Stanislaw Gruszkaebf0d902011-08-26 15:43:47 +0200426 memcpy(&il->_3945.stats, pkt->u.raw, sizeof(il->_3945.stats));
Zhu Yib481de92007-09-25 17:54:57 -0700427}
428
Stanislaw Gruszkaebf0d902011-08-26 15:43:47 +0200429void il3945_reply_stats(struct il_priv *il,
Stanislaw Gruszkab73bb5f2011-08-26 14:37:54 +0200430 struct il_rx_buf *rxb)
Abhijeet Kolekar17f36fc2010-04-16 10:03:54 -0700431{
Stanislaw Gruszkadcae1c62011-08-26 14:36:21 +0200432 struct il_rx_pkt *pkt = rxb_addr(rxb);
Abhijeet Kolekar17f36fc2010-04-16 10:03:54 -0700433 __le32 *flag = (__le32 *)&pkt->u.raw;
434
Stanislaw Gruszkadb7746f2011-11-15 13:11:50 +0100435 if (le32_to_cpu(*flag) & UCODE_STATS_CLEAR_MSK) {
Stanislaw Gruszkad3175162011-11-15 11:25:42 +0100436#ifdef CONFIG_IWLEGACY_DEBUGFS
Stanislaw Gruszkaebf0d902011-08-26 15:43:47 +0200437 memset(&il->_3945.accum_stats, 0,
438 sizeof(struct il3945_notif_stats));
439 memset(&il->_3945.delta_stats, 0,
440 sizeof(struct il3945_notif_stats));
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200441 memset(&il->_3945.max_delta, 0,
Stanislaw Gruszkaebf0d902011-08-26 15:43:47 +0200442 sizeof(struct il3945_notif_stats));
Abhijeet Kolekar17f36fc2010-04-16 10:03:54 -0700443#endif
Stanislaw Gruszka58de00a2011-11-15 11:21:01 +0100444 D_RX("Statistics have been cleared\n");
Abhijeet Kolekar17f36fc2010-04-16 10:03:54 -0700445 }
Stanislaw Gruszkaebf0d902011-08-26 15:43:47 +0200446 il3945_hw_rx_stats(il, rxb);
Abhijeet Kolekar17f36fc2010-04-16 10:03:54 -0700447}
448
449
Tomas Winkler17744ff2008-03-02 01:52:00 +0200450/******************************************************************************
451 *
452 * Misc. internal state and helper functions
453 *
454 ******************************************************************************/
Tomas Winkler17744ff2008-03-02 01:52:00 +0200455
Stanislaw Gruszkaebf0d902011-08-26 15:43:47 +0200456/* This is necessary only for a number of stats, see the caller. */
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200457static int il3945_is_network_packet(struct il_priv *il,
Adel Gadllah4bd9b4f2008-07-11 11:53:29 +0800458 struct ieee80211_hdr *header)
459{
460 /* Filter incoming packets to determine if they are targeted toward
461 * this network, discarding packets coming from ourselves */
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200462 switch (il->iw_mode) {
Johannes Berg05c914f2008-09-11 00:01:58 +0200463 case NL80211_IFTYPE_ADHOC: /* Header: Dest. | Source | BSSID */
Adel Gadllah4bd9b4f2008-07-11 11:53:29 +0800464 /* packets to our IBSS update information */
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200465 return !compare_ether_addr(header->addr3, il->bssid);
Johannes Berg05c914f2008-09-11 00:01:58 +0200466 case NL80211_IFTYPE_STATION: /* Header: Dest. | AP{BSSID} | Source */
Adel Gadllah4bd9b4f2008-07-11 11:53:29 +0800467 /* packets to our IBSS update information */
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200468 return !compare_ether_addr(header->addr2, il->bssid);
Adel Gadllah4bd9b4f2008-07-11 11:53:29 +0800469 default:
470 return 1;
471 }
472}
Tomas Winkler17744ff2008-03-02 01:52:00 +0200473
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200474static void il3945_pass_packet_to_mac80211(struct il_priv *il,
Stanislaw Gruszkab73bb5f2011-08-26 14:37:54 +0200475 struct il_rx_buf *rxb,
Zhu Yi12342c42007-12-20 11:27:32 +0800476 struct ieee80211_rx_status *stats)
Zhu Yib481de92007-09-25 17:54:57 -0700477{
Stanislaw Gruszkadcae1c62011-08-26 14:36:21 +0200478 struct il_rx_pkt *pkt = rxb_addr(rxb);
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +0200479 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)IL_RX_DATA(pkt);
480 struct il3945_rx_frame_hdr *rx_hdr = IL_RX_HDR(pkt);
481 struct il3945_rx_frame_end *rx_end = IL_RX_END(pkt);
Zhu Yi2f301222009-10-09 17:19:45 +0800482 u16 len = le16_to_cpu(rx_hdr->len);
483 struct sk_buff *skb;
Zhu Yi29b1b262009-10-23 13:42:25 -0700484 __le16 fc = hdr->frame_control;
Zhu Yib481de92007-09-25 17:54:57 -0700485
486 /* We received data from the HW, so stop the watchdog */
Stanislaw Gruszkad3175162011-11-15 11:25:42 +0100487 if (unlikely(len + IL39_RX_FRAME_SIZE >
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200488 PAGE_SIZE << il->hw_params.rx_page_order)) {
Stanislaw Gruszka58de00a2011-11-15 11:21:01 +0100489 D_DROP("Corruption detected!\n");
Zhu Yib481de92007-09-25 17:54:57 -0700490 return;
491 }
492
493 /* We only process data packets if the interface is open */
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200494 if (unlikely(!il->is_open)) {
Stanislaw Gruszka58de00a2011-11-15 11:21:01 +0100495 D_DROP(
Tomas Winklere1623442009-01-27 14:27:56 -0800496 "Dropping packet while interface is not open.\n");
Zhu Yib481de92007-09-25 17:54:57 -0700497 return;
498 }
Zhu Yib481de92007-09-25 17:54:57 -0700499
Zhu Yiecdf94b2010-03-29 16:42:26 +0800500 skb = dev_alloc_skb(128);
Zhu Yi2f301222009-10-09 17:19:45 +0800501 if (!skb) {
Stanislaw Gruszka9406f792011-08-18 22:07:57 +0200502 IL_ERR("dev_alloc_skb failed\n");
Zhu Yi2f301222009-10-09 17:19:45 +0800503 return;
504 }
Zhu Yib481de92007-09-25 17:54:57 -0700505
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +0200506 if (!il3945_mod_params.sw_crypto)
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200507 il_set_decrypted_flag(il,
Zhu Yi2f301222009-10-09 17:19:45 +0800508 (struct ieee80211_hdr *)rxb_addr(rxb),
Zhu Yib481de92007-09-25 17:54:57 -0700509 le32_to_cpu(rx_end->status), stats);
510
Zhu Yi2f301222009-10-09 17:19:45 +0800511 skb_add_rx_frag(skb, 0, rxb->page,
512 (void *)rx_hdr->payload - (void *)pkt, len);
513
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200514 il_update_stats(il, false, fc, len);
Zhu Yi2f301222009-10-09 17:19:45 +0800515 memcpy(IEEE80211_SKB_RXCB(skb), stats, sizeof(*stats));
Zhu Yi2f301222009-10-09 17:19:45 +0800516
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200517 ieee80211_rx(il->hw, skb);
518 il->alloc_rxb_page--;
Zhu Yi2f301222009-10-09 17:19:45 +0800519 rxb->page = NULL;
Zhu Yib481de92007-09-25 17:54:57 -0700520}
521
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +0200522#define IL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
Mohamed Abbas7878a5a2007-11-29 11:10:13 +0800523
Stanislaw Gruszka6e9848b42011-08-30 15:45:31 +0200524static void il3945_hdl_rx(struct il_priv *il,
Stanislaw Gruszkab73bb5f2011-08-26 14:37:54 +0200525 struct il_rx_buf *rxb)
Zhu Yib481de92007-09-25 17:54:57 -0700526{
Tomas Winkler17744ff2008-03-02 01:52:00 +0200527 struct ieee80211_hdr *header;
528 struct ieee80211_rx_status rx_status;
Stanislaw Gruszkadcae1c62011-08-26 14:36:21 +0200529 struct il_rx_pkt *pkt = rxb_addr(rxb);
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +0200530 struct il3945_rx_frame_stats *rx_stats = IL_RX_STATS(pkt);
531 struct il3945_rx_frame_hdr *rx_hdr = IL_RX_HDR(pkt);
532 struct il3945_rx_frame_end *rx_end = IL_RX_END(pkt);
Reinette Chatref875f512010-04-05 10:43:10 -0700533 u16 rx_stats_sig_avg __maybe_unused = le16_to_cpu(rx_stats->sig_avg);
534 u16 rx_stats_noise_diff __maybe_unused = le16_to_cpu(rx_stats->noise_diff);
Zhu Yib481de92007-09-25 17:54:57 -0700535 u8 network_packet;
Tomas Winkler17744ff2008-03-02 01:52:00 +0200536
Tomas Winkler17744ff2008-03-02 01:52:00 +0200537 rx_status.flag = 0;
538 rx_status.mactime = le64_to_cpu(rx_end->timestamp);
Tomas Winkler17744ff2008-03-02 01:52:00 +0200539 rx_status.band = (rx_hdr->phy_flags & RX_RES_PHY_FLAGS_BAND_24_MSK) ?
540 IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ;
Bruno Randolf59eb21a2011-01-17 13:37:28 +0900541 rx_status.freq =
542 ieee80211_channel_to_frequency(le16_to_cpu(rx_hdr->channel),
543 rx_status.band);
Tomas Winkler17744ff2008-03-02 01:52:00 +0200544
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +0200545 rx_status.rate_idx = il3945_hwrate_to_plcp_idx(rx_hdr->rate);
Tomas Winkler17744ff2008-03-02 01:52:00 +0200546 if (rx_status.band == IEEE80211_BAND_5GHZ)
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +0200547 rx_status.rate_idx -= IL_FIRST_OFDM_RATE;
Zhu Yib481de92007-09-25 17:54:57 -0700548
Reinette Chatre9024adf2009-10-02 13:43:57 -0700549 rx_status.antenna = (le16_to_cpu(rx_hdr->phy_flags) &
Bruno Randolf6f0a2c42008-07-30 17:20:14 +0200550 RX_RES_PHY_FLAGS_ANTENNA_MSK) >> 4;
551
552 /* set the preamble flag if appropriate */
553 if (rx_hdr->phy_flags & RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK)
554 rx_status.flag |= RX_FLAG_SHORTPRE;
555
Zhu Yib481de92007-09-25 17:54:57 -0700556 if ((unlikely(rx_stats->phy_count > 20))) {
Stanislaw Gruszka58de00a2011-11-15 11:21:01 +0100557 D_DROP("dsp size out of range [0,20]: %d/n",
Tomas Winklere1623442009-01-27 14:27:56 -0800558 rx_stats->phy_count);
Zhu Yib481de92007-09-25 17:54:57 -0700559 return;
560 }
561
Stanislaw Gruszka232913b2011-08-26 10:45:16 +0200562 if (!(rx_end->status & RX_RES_STATUS_NO_CRC32_ERROR) ||
563 !(rx_end->status & RX_RES_STATUS_NO_RXE_OVERFLOW)) {
Stanislaw Gruszka58de00a2011-11-15 11:21:01 +0100564 D_RX("Bad CRC or FIFO: 0x%08X.\n", rx_end->status);
Zhu Yib481de92007-09-25 17:54:57 -0700565 return;
566 }
567
Maxim Levitsky56decd32008-08-01 12:54:27 +0300568
Zhu Yib481de92007-09-25 17:54:57 -0700569
570 /* Convert 3945's rssi indicator to dBm */
Stanislaw Gruszkad3175162011-11-15 11:25:42 +0100571 rx_status.signal = rx_stats->rssi - IL39_RSSI_OFFSET;
Zhu Yib481de92007-09-25 17:54:57 -0700572
Stanislaw Gruszka58de00a2011-11-15 11:21:01 +0100573 D_STATS("Rssi %d sig_avg %d noise_diff %d\n",
Johannes Berged1b6e92010-03-18 09:58:27 -0700574 rx_status.signal, rx_stats_sig_avg,
575 rx_stats_noise_diff);
Zhu Yib481de92007-09-25 17:54:57 -0700576
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +0200577 header = (struct ieee80211_hdr *)IL_RX_DATA(pkt);
Zhu Yib481de92007-09-25 17:54:57 -0700578
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200579 network_packet = il3945_is_network_packet(il, header);
Zhu Yib481de92007-09-25 17:54:57 -0700580
Stanislaw Gruszka58de00a2011-11-15 11:21:01 +0100581 D_STATS("[%c] %d RSSI:%d Signal:%u, Rate:%u\n",
Tomas Winkler17744ff2008-03-02 01:52:00 +0200582 network_packet ? '*' : ' ',
583 le16_to_cpu(rx_hdr->channel),
Bruno Randolf566bfe52008-05-08 19:15:40 +0200584 rx_status.signal, rx_status.signal,
Johannes Berged1b6e92010-03-18 09:58:27 -0700585 rx_status.rate_idx);
Zhu Yib481de92007-09-25 17:54:57 -0700586
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200587 il_dbg_log_rx_data_frame(il, le16_to_cpu(rx_hdr->len),
Wey-Yi Guybe663ab2011-02-21 11:27:26 -0800588 header);
Zhu Yib481de92007-09-25 17:54:57 -0700589
590 if (network_packet) {
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200591 il->_3945.last_beacon_time =
Johannes Berge99f1682010-01-19 10:04:28 -0800592 le32_to_cpu(rx_end->beacon_timestamp);
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200593 il->_3945.last_tsf = le64_to_cpu(rx_end->timestamp);
594 il->_3945.last_rx_rssi = rx_status.signal;
Zhu Yib481de92007-09-25 17:54:57 -0700595 }
596
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200597 il3945_pass_packet_to_mac80211(il, rxb, &rx_status);
Zhu Yib481de92007-09-25 17:54:57 -0700598}
599
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200600int il3945_hw_txq_attach_buf_to_tfd(struct il_priv *il,
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +0200601 struct il_tx_queue *txq,
Samuel Ortiz7aaa1d72009-01-19 15:30:26 -0800602 dma_addr_t addr, u16 len, u8 reset, u8 pad)
Zhu Yib481de92007-09-25 17:54:57 -0700603{
604 int count;
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +0200605 struct il_queue *q;
606 struct il3945_tfd *tfd, *tfd_tmp;
Samuel Ortiz7aaa1d72009-01-19 15:30:26 -0800607
608 q = &txq->q;
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +0200609 tfd_tmp = (struct il3945_tfd *)txq->tfds;
Samuel Ortiz59606ff2009-01-23 13:45:13 -0800610 tfd = &tfd_tmp[q->write_ptr];
Samuel Ortiz7aaa1d72009-01-19 15:30:26 -0800611
612 if (reset)
613 memset(tfd, 0, sizeof(*tfd));
Zhu Yib481de92007-09-25 17:54:57 -0700614
615 count = TFD_CTL_COUNT_GET(le32_to_cpu(tfd->control_flags));
Zhu Yib481de92007-09-25 17:54:57 -0700616
Stanislaw Gruszka232913b2011-08-26 10:45:16 +0200617 if (count >= NUM_TFD_CHUNKS || count < 0) {
Stanislaw Gruszka9406f792011-08-18 22:07:57 +0200618 IL_ERR("Error can not send more than %d chunks\n",
Zhu Yib481de92007-09-25 17:54:57 -0700619 NUM_TFD_CHUNKS);
620 return -EINVAL;
621 }
622
Winkler, Tomasdbb66542008-12-22 11:31:14 +0800623 tfd->tbs[count].addr = cpu_to_le32(addr);
624 tfd->tbs[count].len = cpu_to_le32(len);
Zhu Yib481de92007-09-25 17:54:57 -0700625
626 count++;
627
628 tfd->control_flags = cpu_to_le32(TFD_CTL_COUNT_SET(count) |
629 TFD_CTL_PAD_SET(pad));
630
631 return 0;
632}
633
634/**
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +0100635 * il3945_hw_txq_free_tfd - Free one TFD, those at idx [txq->q.read_ptr]
Zhu Yib481de92007-09-25 17:54:57 -0700636 *
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +0100637 * Does NOT advance any idxes
Zhu Yib481de92007-09-25 17:54:57 -0700638 */
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200639void il3945_hw_txq_free_tfd(struct il_priv *il, struct il_tx_queue *txq)
Zhu Yib481de92007-09-25 17:54:57 -0700640{
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +0200641 struct il3945_tfd *tfd_tmp = (struct il3945_tfd *)txq->tfds;
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +0100642 int idx = txq->q.read_ptr;
643 struct il3945_tfd *tfd = &tfd_tmp[idx];
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200644 struct pci_dev *dev = il->pci_dev;
Zhu Yib481de92007-09-25 17:54:57 -0700645 int i;
646 int counter;
647
Zhu Yib481de92007-09-25 17:54:57 -0700648 /* sanity check */
Winkler, Tomasdbb66542008-12-22 11:31:14 +0800649 counter = TFD_CTL_COUNT_GET(le32_to_cpu(tfd->control_flags));
Zhu Yib481de92007-09-25 17:54:57 -0700650 if (counter > NUM_TFD_CHUNKS) {
Stanislaw Gruszka9406f792011-08-18 22:07:57 +0200651 IL_ERR("Too many chunks: %i\n", counter);
Zhu Yib481de92007-09-25 17:54:57 -0700652 /* @todo issue fatal error, it is quite serious situation */
Samuel Ortiz7aaa1d72009-01-19 15:30:26 -0800653 return;
Zhu Yib481de92007-09-25 17:54:57 -0700654 }
655
Reinette Chatrefd9377e2009-03-11 11:17:58 -0700656 /* Unmap tx_cmd */
657 if (counter)
658 pci_unmap_single(dev,
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +0100659 dma_unmap_addr(&txq->meta[idx], mapping),
660 dma_unmap_len(&txq->meta[idx], len),
Reinette Chatrefd9377e2009-03-11 11:17:58 -0700661 PCI_DMA_TODEVICE);
662
Zhu Yib481de92007-09-25 17:54:57 -0700663 /* unmap chunks if any */
664
Johannes Bergff0d91c2010-05-17 02:37:34 -0700665 for (i = 1; i < counter; i++)
Winkler, Tomasdbb66542008-12-22 11:31:14 +0800666 pci_unmap_single(dev, le32_to_cpu(tfd->tbs[i].addr),
667 le32_to_cpu(tfd->tbs[i].len), PCI_DMA_TODEVICE);
Johannes Berg4f5fa232010-05-17 02:37:31 -0700668
Johannes Bergff0d91c2010-05-17 02:37:34 -0700669 /* free SKB */
670 if (txq->txb) {
671 struct sk_buff *skb;
Johannes Berg4f5fa232010-05-17 02:37:31 -0700672
Johannes Bergff0d91c2010-05-17 02:37:34 -0700673 skb = txq->txb[txq->q.read_ptr].skb;
674
675 /* can be called from irqs-disabled context */
676 if (skb) {
677 dev_kfree_skb_any(skb);
678 txq->txb[txq->q.read_ptr].skb = NULL;
Zhu Yib481de92007-09-25 17:54:57 -0700679 }
680 }
Zhu Yib481de92007-09-25 17:54:57 -0700681}
682
Zhu Yib481de92007-09-25 17:54:57 -0700683/**
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +0200684 * il3945_hw_build_tx_cmd_rate - Add rate portion to TX_CMD:
Zhu Yib481de92007-09-25 17:54:57 -0700685 *
686*/
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200687void il3945_hw_build_tx_cmd_rate(struct il_priv *il,
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +0200688 struct il_device_cmd *cmd,
Johannes Bergc2acea82009-07-24 11:13:05 -0700689 struct ieee80211_tx_info *info,
690 struct ieee80211_hdr *hdr,
691 int sta_id, int tx_id)
Zhu Yib481de92007-09-25 17:54:57 -0700692{
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200693 u16 hw_value = ieee80211_get_tx_rate(il->hw, info)->hw_value;
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +0100694 u16 rate_idx = min(hw_value & 0xffff, RATE_COUNT_3945);
Zhu Yib481de92007-09-25 17:54:57 -0700695 u16 rate_mask;
696 int rate;
697 u8 rts_retry_limit;
698 u8 data_retry_limit;
699 __le32 tx_flags;
Harvey Harrisonfd7c8a42008-06-11 14:21:56 -0700700 __le16 fc = hdr->frame_control;
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +0200701 struct il3945_tx_cmd *tx_cmd = (struct il3945_tx_cmd *)cmd->cmd.payload;
Zhu Yib481de92007-09-25 17:54:57 -0700702
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +0100703 rate = il3945_rates[rate_idx].plcp;
Abhijeet Kolekar9744c912009-10-09 13:20:31 -0700704 tx_flags = tx_cmd->tx_flags;
Zhu Yib481de92007-09-25 17:54:57 -0700705
706 /* We need to figure out how to get the sta->supp_rates while
Johannes Berge039fa42008-05-15 12:55:29 +0200707 * in this running context */
Stanislaw Gruszka2eb05812011-08-26 16:07:43 +0200708 rate_mask = RATES_MASK_3945;
Abhijeet Kolekar768db982009-10-09 13:20:33 -0700709
710 /* Set retry limit on DATA packets and Probe Responses*/
711 if (ieee80211_is_probe_resp(fc))
712 data_retry_limit = 3;
713 else
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +0200714 data_retry_limit = IL_DEFAULT_TX_RETRY;
Abhijeet Kolekar768db982009-10-09 13:20:33 -0700715 tx_cmd->data_retry_limit = data_retry_limit;
716
Stanislaw Gruszkad3175162011-11-15 11:25:42 +0100717 if (tx_id >= IL39_CMD_QUEUE_NUM)
Zhu Yib481de92007-09-25 17:54:57 -0700718 rts_retry_limit = 3;
719 else
720 rts_retry_limit = 7;
721
Abhijeet Kolekar768db982009-10-09 13:20:33 -0700722 if (data_retry_limit < rts_retry_limit)
723 rts_retry_limit = data_retry_limit;
724 tx_cmd->rts_retry_limit = rts_retry_limit;
Zhu Yib481de92007-09-25 17:54:57 -0700725
Abhijeet Kolekar9744c912009-10-09 13:20:31 -0700726 tx_cmd->rate = rate;
727 tx_cmd->tx_flags = tx_flags;
Zhu Yib481de92007-09-25 17:54:57 -0700728
729 /* OFDM */
Abhijeet Kolekar9744c912009-10-09 13:20:31 -0700730 tx_cmd->supp_rates[0] =
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +0200731 ((rate_mask & IL_OFDM_RATES_MASK) >> IL_FIRST_OFDM_RATE) & 0xFF;
Zhu Yib481de92007-09-25 17:54:57 -0700732
733 /* CCK */
Abhijeet Kolekar9744c912009-10-09 13:20:31 -0700734 tx_cmd->supp_rates[1] = (rate_mask & 0xF);
Zhu Yib481de92007-09-25 17:54:57 -0700735
Stanislaw Gruszka58de00a2011-11-15 11:21:01 +0100736 D_RATE("Tx sta id: %d, rate: %d (plcp), flags: 0x%4X "
Zhu Yib481de92007-09-25 17:54:57 -0700737 "cck/ofdm mask: 0x%x/0x%x\n", sta_id,
Abhijeet Kolekar9744c912009-10-09 13:20:31 -0700738 tx_cmd->rate, le32_to_cpu(tx_cmd->tx_flags),
739 tx_cmd->supp_rates[1], tx_cmd->supp_rates[0]);
Zhu Yib481de92007-09-25 17:54:57 -0700740}
741
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200742static u8 il3945_sync_sta(struct il_priv *il, int sta_id, u16 tx_rate)
Zhu Yib481de92007-09-25 17:54:57 -0700743{
744 unsigned long flags_spin;
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +0200745 struct il_station_entry *station;
Zhu Yib481de92007-09-25 17:54:57 -0700746
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +0200747 if (sta_id == IL_INVALID_STATION)
748 return IL_INVALID_STATION;
Zhu Yib481de92007-09-25 17:54:57 -0700749
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200750 spin_lock_irqsave(&il->sta_lock, flags_spin);
751 station = &il->stations[sta_id];
Zhu Yib481de92007-09-25 17:54:57 -0700752
753 station->sta.sta.modify_mask = STA_MODIFY_TX_RATE_MSK;
754 station->sta.rate_n_flags = cpu_to_le16(tx_rate);
Zhu Yib481de92007-09-25 17:54:57 -0700755 station->sta.mode = STA_CONTROL_MODIFY_MSK;
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200756 il_send_add_sta(il, &station->sta, CMD_ASYNC);
757 spin_unlock_irqrestore(&il->sta_lock, flags_spin);
Zhu Yib481de92007-09-25 17:54:57 -0700758
Stanislaw Gruszka58de00a2011-11-15 11:21:01 +0100759 D_RATE("SCALE sync station %d to rate %d\n",
Zhu Yib481de92007-09-25 17:54:57 -0700760 sta_id, tx_rate);
761 return sta_id;
762}
763
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200764static void il3945_set_pwr_vmain(struct il_priv *il)
Zhu Yib481de92007-09-25 17:54:57 -0700765{
Johannes Berg9597eba2010-09-22 18:02:09 +0200766/*
767 * (for documentation purposes)
768 * to set power to V_AUX, do
769
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200770 if (pci_pme_capable(il->pci_dev, PCI_D3cold)) {
771 il_set_bits_mask_prph(il, APMG_PS_CTRL_REG,
Zhu Yib481de92007-09-25 17:54:57 -0700772 APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
773 ~APMG_PS_CTRL_MSK_PWR_SRC);
Zhu Yib481de92007-09-25 17:54:57 -0700774
Stanislaw Gruszka142b3432011-08-24 15:22:57 +0200775 _il_poll_bit(il, CSR_GPIO_IN,
Zhu Yib481de92007-09-25 17:54:57 -0700776 CSR_GPIO_IN_VAL_VAUX_PWR_SRC,
777 CSR_GPIO_IN_BIT_AUX_POWER, 5000);
Tomas Winkler3fdb68d2009-02-10 15:19:02 -0800778 }
Johannes Berg9597eba2010-09-22 18:02:09 +0200779 */
Zhu Yib481de92007-09-25 17:54:57 -0700780
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200781 il_set_bits_mask_prph(il, APMG_PS_CTRL_REG,
Johannes Berg9597eba2010-09-22 18:02:09 +0200782 APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
783 ~APMG_PS_CTRL_MSK_PWR_SRC);
Zhu Yib481de92007-09-25 17:54:57 -0700784
Stanislaw Gruszka142b3432011-08-24 15:22:57 +0200785 _il_poll_bit(il, CSR_GPIO_IN, CSR_GPIO_IN_VAL_VMAIN_PWR_SRC,
Johannes Berg9597eba2010-09-22 18:02:09 +0200786 CSR_GPIO_IN_BIT_AUX_POWER, 5000); /* uS */
Zhu Yib481de92007-09-25 17:54:57 -0700787}
788
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200789static int il3945_rx_init(struct il_priv *il, struct il_rx_queue *rxq)
Zhu Yib481de92007-09-25 17:54:57 -0700790{
Stanislaw Gruszka0c1a94e2011-08-24 17:37:16 +0200791 il_wr(il, FH39_RCSR_RBD_BASE(0), rxq->bd_dma);
792 il_wr(il, FH39_RCSR_RPTR_ADDR(0),
Wey-Yi Guybe663ab2011-02-21 11:27:26 -0800793 rxq->rb_stts_dma);
Stanislaw Gruszka0c1a94e2011-08-24 17:37:16 +0200794 il_wr(il, FH39_RCSR_WPTR(0), 0);
795 il_wr(il, FH39_RCSR_CONFIG(0),
Tomas Winklerbddadf82008-12-19 10:37:01 +0800796 FH39_RCSR_RX_CONFIG_REG_VAL_DMA_CHNL_EN_ENABLE |
797 FH39_RCSR_RX_CONFIG_REG_VAL_RDRBD_EN_ENABLE |
798 FH39_RCSR_RX_CONFIG_REG_BIT_WR_STTS_EN |
799 FH39_RCSR_RX_CONFIG_REG_VAL_MAX_FRAG_SIZE_128 |
800 (RX_QUEUE_SIZE_LOG << FH39_RCSR_RX_CONFIG_REG_POS_RBDC_SIZE) |
801 FH39_RCSR_RX_CONFIG_REG_VAL_IRQ_DEST_INT_HOST |
802 (1 << FH39_RCSR_RX_CONFIG_REG_POS_IRQ_RBTH) |
803 FH39_RCSR_RX_CONFIG_REG_VAL_MSG_MODE_FH);
Zhu Yib481de92007-09-25 17:54:57 -0700804
805 /* fake read to flush all prev I/O */
Stanislaw Gruszka0c1a94e2011-08-24 17:37:16 +0200806 il_rd(il, FH39_RSSR_CTRL);
Zhu Yib481de92007-09-25 17:54:57 -0700807
Zhu Yib481de92007-09-25 17:54:57 -0700808 return 0;
809}
810
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200811static int il3945_tx_reset(struct il_priv *il)
Zhu Yib481de92007-09-25 17:54:57 -0700812{
Zhu Yib481de92007-09-25 17:54:57 -0700813
814 /* bypass mode */
Stanislaw Gruszkadb54eb52011-08-24 21:06:33 +0200815 il_wr_prph(il, ALM_SCD_MODE_REG, 0x2);
Zhu Yib481de92007-09-25 17:54:57 -0700816
817 /* RA 0 is active */
Stanislaw Gruszkadb54eb52011-08-24 21:06:33 +0200818 il_wr_prph(il, ALM_SCD_ARASTAT_REG, 0x01);
Zhu Yib481de92007-09-25 17:54:57 -0700819
820 /* all 6 fifo are active */
Stanislaw Gruszkadb54eb52011-08-24 21:06:33 +0200821 il_wr_prph(il, ALM_SCD_TXFACT_REG, 0x3f);
Zhu Yib481de92007-09-25 17:54:57 -0700822
Stanislaw Gruszkadb54eb52011-08-24 21:06:33 +0200823 il_wr_prph(il, ALM_SCD_SBYP_MODE_1_REG, 0x010000);
824 il_wr_prph(il, ALM_SCD_SBYP_MODE_2_REG, 0x030002);
825 il_wr_prph(il, ALM_SCD_TXF4MF_REG, 0x000004);
826 il_wr_prph(il, ALM_SCD_TXF5MF_REG, 0x000005);
Zhu Yib481de92007-09-25 17:54:57 -0700827
Stanislaw Gruszka0c1a94e2011-08-24 17:37:16 +0200828 il_wr(il, FH39_TSSR_CBB_BASE,
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200829 il->_3945.shared_phys);
Zhu Yib481de92007-09-25 17:54:57 -0700830
Stanislaw Gruszka0c1a94e2011-08-24 17:37:16 +0200831 il_wr(il, FH39_TSSR_MSG_CONFIG,
Tomas Winklerbddadf82008-12-19 10:37:01 +0800832 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_SNOOP_RD_TXPD_ON |
833 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RD_TXPD_ON |
834 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_MAX_FRAG_SIZE_128B |
835 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_SNOOP_RD_TFD_ON |
836 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RD_CBB_ON |
837 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RSP_WAIT_TH |
838 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_RSP_WAIT_TH);
Zhu Yib481de92007-09-25 17:54:57 -0700839
Zhu Yib481de92007-09-25 17:54:57 -0700840
841 return 0;
842}
843
844/**
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +0200845 * il3945_txq_ctx_reset - Reset TX queue context
Zhu Yib481de92007-09-25 17:54:57 -0700846 *
847 * Destroys all DMA structures and initialize them again
848 */
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200849static int il3945_txq_ctx_reset(struct il_priv *il)
Zhu Yib481de92007-09-25 17:54:57 -0700850{
851 int rc;
852 int txq_id, slots_num;
853
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200854 il3945_hw_txq_ctx_free(il);
Zhu Yib481de92007-09-25 17:54:57 -0700855
Wey-Yi Guy88804e22009-10-09 13:20:28 -0700856 /* allocate tx queue structure */
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200857 rc = il_alloc_txq_mem(il);
Wey-Yi Guy88804e22009-10-09 13:20:28 -0700858 if (rc)
859 return rc;
860
Zhu Yib481de92007-09-25 17:54:57 -0700861 /* Tx CMD queue */
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200862 rc = il3945_tx_reset(il);
Zhu Yib481de92007-09-25 17:54:57 -0700863 if (rc)
864 goto error;
865
866 /* Tx queue(s) */
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200867 for (txq_id = 0; txq_id < il->hw_params.max_txq_num; txq_id++) {
Stanislaw Gruszkad3175162011-11-15 11:25:42 +0100868 slots_num = (txq_id == IL39_CMD_QUEUE_NUM) ?
Zhu Yib481de92007-09-25 17:54:57 -0700869 TFD_CMD_SLOTS : TFD_TX_CMD_SLOTS;
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200870 rc = il_tx_queue_init(il, &il->txq[txq_id],
Wey-Yi Guybe663ab2011-02-21 11:27:26 -0800871 slots_num, txq_id);
Zhu Yib481de92007-09-25 17:54:57 -0700872 if (rc) {
Stanislaw Gruszka9406f792011-08-18 22:07:57 +0200873 IL_ERR("Tx %d queue init failed\n", txq_id);
Zhu Yib481de92007-09-25 17:54:57 -0700874 goto error;
875 }
876 }
877
878 return rc;
879
880 error:
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200881 il3945_hw_txq_ctx_free(il);
Zhu Yib481de92007-09-25 17:54:57 -0700882 return rc;
883}
884
Ben Cahillfadb3582009-10-23 13:42:21 -0700885
Ben Cahillf33269b2009-10-09 13:20:19 -0700886/*
Ben Cahillfadb3582009-10-23 13:42:21 -0700887 * Start up 3945's basic functionality after it has been reset
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +0200888 * (e.g. after platform boot, or shutdown via il_apm_stop())
Ben Cahillf33269b2009-10-09 13:20:19 -0700889 * NOTE: This does not load uCode nor start the embedded processor
890 */
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200891static int il3945_apm_init(struct il_priv *il)
Zhu Yib481de92007-09-25 17:54:57 -0700892{
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200893 int ret = il_apm_init(il);
Kolekar, Abhijeet01ec6162008-12-19 10:37:38 +0800894
Ben Cahillf33269b2009-10-09 13:20:19 -0700895 /* Clear APMG (NIC's internal power management) interrupts */
Stanislaw Gruszkadb54eb52011-08-24 21:06:33 +0200896 il_wr_prph(il, APMG_RTC_INT_MSK_REG, 0x0);
897 il_wr_prph(il, APMG_RTC_INT_STT_REG, 0xFFFFFFFF);
Ben Cahillf33269b2009-10-09 13:20:19 -0700898
899 /* Reset radio chip */
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200900 il_set_bits_prph(il, APMG_PS_CTRL_REG,
Wey-Yi Guybe663ab2011-02-21 11:27:26 -0800901 APMG_PS_CTRL_VAL_RESET_REQ);
Ben Cahillf33269b2009-10-09 13:20:19 -0700902 udelay(5);
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200903 il_clear_bits_prph(il, APMG_PS_CTRL_REG,
Wey-Yi Guybe663ab2011-02-21 11:27:26 -0800904 APMG_PS_CTRL_VAL_RESET_REQ);
Ben Cahillf33269b2009-10-09 13:20:19 -0700905
Kolekar, Abhijeet01ec6162008-12-19 10:37:38 +0800906 return ret;
907}
Zhu Yib481de92007-09-25 17:54:57 -0700908
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200909static void il3945_nic_config(struct il_priv *il)
Kolekar, Abhijeet01ec6162008-12-19 10:37:38 +0800910{
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200911 struct il3945_eeprom *eeprom = (struct il3945_eeprom *)il->eeprom;
Kolekar, Abhijeet01ec6162008-12-19 10:37:38 +0800912 unsigned long flags;
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200913 u8 rev_id = il->pci_dev->revision;
Zhu Yib481de92007-09-25 17:54:57 -0700914
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200915 spin_lock_irqsave(&il->lock, flags);
Zhu Yib481de92007-09-25 17:54:57 -0700916
Abhijeet Kolekar43121432009-05-08 13:44:41 -0700917 /* Determine HW type */
Stanislaw Gruszka58de00a2011-11-15 11:21:01 +0100918 D_INFO("HW Revision ID = 0x%X\n", rev_id);
Abhijeet Kolekar43121432009-05-08 13:44:41 -0700919
Zhu Yib481de92007-09-25 17:54:57 -0700920 if (rev_id & PCI_CFG_REV_ID_BIT_RTP)
Stanislaw Gruszka58de00a2011-11-15 11:21:01 +0100921 D_INFO("RTP type\n");
Zhu Yib481de92007-09-25 17:54:57 -0700922 else if (rev_id & PCI_CFG_REV_ID_BIT_BASIC_SKU) {
Stanislaw Gruszka58de00a2011-11-15 11:21:01 +0100923 D_INFO("3945 RADIO-MB type\n");
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200924 il_set_bit(il, CSR_HW_IF_CONFIG_REG,
Tomas Winkler6f83eaa2008-03-04 18:09:28 -0800925 CSR39_HW_IF_CONFIG_REG_BIT_3945_MB);
Zhu Yib481de92007-09-25 17:54:57 -0700926 } else {
Stanislaw Gruszka58de00a2011-11-15 11:21:01 +0100927 D_INFO("3945 RADIO-MM type\n");
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200928 il_set_bit(il, CSR_HW_IF_CONFIG_REG,
Tomas Winkler6f83eaa2008-03-04 18:09:28 -0800929 CSR39_HW_IF_CONFIG_REG_BIT_3945_MM);
Zhu Yib481de92007-09-25 17:54:57 -0700930 }
931
Samuel Ortize6148912009-01-23 13:45:15 -0800932 if (EEPROM_SKU_CAP_OP_MODE_MRC == eeprom->sku_cap) {
Stanislaw Gruszka58de00a2011-11-15 11:21:01 +0100933 D_INFO("SKU OP mode is mrc\n");
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200934 il_set_bit(il, CSR_HW_IF_CONFIG_REG,
Tomas Winkler6f83eaa2008-03-04 18:09:28 -0800935 CSR39_HW_IF_CONFIG_REG_BIT_SKU_MRC);
Zhu Yib481de92007-09-25 17:54:57 -0700936 } else
Stanislaw Gruszka58de00a2011-11-15 11:21:01 +0100937 D_INFO("SKU OP mode is basic\n");
Zhu Yib481de92007-09-25 17:54:57 -0700938
Samuel Ortize6148912009-01-23 13:45:15 -0800939 if ((eeprom->board_revision & 0xF0) == 0xD0) {
Stanislaw Gruszka58de00a2011-11-15 11:21:01 +0100940 D_INFO("3945ABG revision is 0x%X\n",
Samuel Ortize6148912009-01-23 13:45:15 -0800941 eeprom->board_revision);
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200942 il_set_bit(il, CSR_HW_IF_CONFIG_REG,
Tomas Winkler6f83eaa2008-03-04 18:09:28 -0800943 CSR39_HW_IF_CONFIG_REG_BIT_BOARD_TYPE);
Zhu Yib481de92007-09-25 17:54:57 -0700944 } else {
Stanislaw Gruszka58de00a2011-11-15 11:21:01 +0100945 D_INFO("3945ABG revision is 0x%X\n",
Samuel Ortize6148912009-01-23 13:45:15 -0800946 eeprom->board_revision);
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200947 il_clear_bit(il, CSR_HW_IF_CONFIG_REG,
Tomas Winkler6f83eaa2008-03-04 18:09:28 -0800948 CSR39_HW_IF_CONFIG_REG_BIT_BOARD_TYPE);
Zhu Yib481de92007-09-25 17:54:57 -0700949 }
950
Samuel Ortize6148912009-01-23 13:45:15 -0800951 if (eeprom->almgor_m_version <= 1) {
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200952 il_set_bit(il, CSR_HW_IF_CONFIG_REG,
Tomas Winkler6f83eaa2008-03-04 18:09:28 -0800953 CSR39_HW_IF_CONFIG_REG_BITS_SILICON_TYPE_A);
Stanislaw Gruszka58de00a2011-11-15 11:21:01 +0100954 D_INFO("Card M type A version is 0x%X\n",
Samuel Ortize6148912009-01-23 13:45:15 -0800955 eeprom->almgor_m_version);
Zhu Yib481de92007-09-25 17:54:57 -0700956 } else {
Stanislaw Gruszka58de00a2011-11-15 11:21:01 +0100957 D_INFO("Card M type B version is 0x%X\n",
Samuel Ortize6148912009-01-23 13:45:15 -0800958 eeprom->almgor_m_version);
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200959 il_set_bit(il, CSR_HW_IF_CONFIG_REG,
Tomas Winkler6f83eaa2008-03-04 18:09:28 -0800960 CSR39_HW_IF_CONFIG_REG_BITS_SILICON_TYPE_B);
Zhu Yib481de92007-09-25 17:54:57 -0700961 }
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200962 spin_unlock_irqrestore(&il->lock, flags);
Zhu Yib481de92007-09-25 17:54:57 -0700963
Samuel Ortize6148912009-01-23 13:45:15 -0800964 if (eeprom->sku_cap & EEPROM_SKU_CAP_SW_RF_KILL_ENABLE)
Stanislaw Gruszka58de00a2011-11-15 11:21:01 +0100965 D_RF_KILL("SW RF KILL supported in EEPROM.\n");
Zhu Yib481de92007-09-25 17:54:57 -0700966
Samuel Ortize6148912009-01-23 13:45:15 -0800967 if (eeprom->sku_cap & EEPROM_SKU_CAP_HW_RF_KILL_ENABLE)
Stanislaw Gruszka58de00a2011-11-15 11:21:01 +0100968 D_RF_KILL("HW RF KILL supported in EEPROM.\n");
Kolekar, Abhijeet01ec6162008-12-19 10:37:38 +0800969}
970
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200971int il3945_hw_nic_init(struct il_priv *il)
Kolekar, Abhijeet01ec6162008-12-19 10:37:38 +0800972{
Kolekar, Abhijeet01ec6162008-12-19 10:37:38 +0800973 int rc;
974 unsigned long flags;
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200975 struct il_rx_queue *rxq = &il->rxq;
Kolekar, Abhijeet01ec6162008-12-19 10:37:38 +0800976
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200977 spin_lock_irqsave(&il->lock, flags);
978 il->cfg->ops->lib->apm_ops.init(il);
979 spin_unlock_irqrestore(&il->lock, flags);
Kolekar, Abhijeet01ec6162008-12-19 10:37:38 +0800980
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200981 il3945_set_pwr_vmain(il);
Kolekar, Abhijeet854682e2008-12-19 10:37:39 +0800982
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200983 il->cfg->ops->lib->apm_ops.config(il);
Zhu Yib481de92007-09-25 17:54:57 -0700984
985 /* Allocate the RX queue, or reset if it is already allocated */
986 if (!rxq->bd) {
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200987 rc = il_rx_queue_alloc(il);
Zhu Yib481de92007-09-25 17:54:57 -0700988 if (rc) {
Stanislaw Gruszka9406f792011-08-18 22:07:57 +0200989 IL_ERR("Unable to initialize Rx queue\n");
Zhu Yib481de92007-09-25 17:54:57 -0700990 return -ENOMEM;
991 }
992 } else
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200993 il3945_rx_queue_reset(il, rxq);
Zhu Yib481de92007-09-25 17:54:57 -0700994
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200995 il3945_rx_replenish(il);
Zhu Yib481de92007-09-25 17:54:57 -0700996
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +0200997 il3945_rx_init(il, rxq);
Zhu Yib481de92007-09-25 17:54:57 -0700998
Zhu Yib481de92007-09-25 17:54:57 -0700999
1000 /* Look at using this instead:
1001 rxq->need_update = 1;
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001002 il_rx_queue_update_write_ptr(il, rxq);
Zhu Yib481de92007-09-25 17:54:57 -07001003 */
1004
Stanislaw Gruszka0c1a94e2011-08-24 17:37:16 +02001005 il_wr(il, FH39_RCSR_WPTR(0), rxq->write & ~7);
Zhu Yib481de92007-09-25 17:54:57 -07001006
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001007 rc = il3945_txq_ctx_reset(il);
Zhu Yib481de92007-09-25 17:54:57 -07001008 if (rc)
1009 return rc;
1010
Stanislaw Gruszkaa6766cc2011-11-15 13:09:01 +01001011 set_bit(S_INIT, &il->status);
Zhu Yib481de92007-09-25 17:54:57 -07001012
1013 return 0;
1014}
1015
1016/**
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02001017 * il3945_hw_txq_ctx_free - Free TXQ Context
Zhu Yib481de92007-09-25 17:54:57 -07001018 *
1019 * Destroy all TX DMA queues and structures
1020 */
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001021void il3945_hw_txq_ctx_free(struct il_priv *il)
Zhu Yib481de92007-09-25 17:54:57 -07001022{
1023 int txq_id;
1024
1025 /* Tx queues */
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001026 if (il->txq)
1027 for (txq_id = 0; txq_id < il->hw_params.max_txq_num;
Wey-Yi Guy88804e22009-10-09 13:20:28 -07001028 txq_id++)
Stanislaw Gruszkad3175162011-11-15 11:25:42 +01001029 if (txq_id == IL39_CMD_QUEUE_NUM)
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001030 il_cmd_queue_free(il);
Wey-Yi Guy88804e22009-10-09 13:20:28 -07001031 else
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001032 il_tx_queue_free(il, txq_id);
Abhijeet Kolekar3e5d2382009-03-17 21:51:49 -07001033
Wey-Yi Guy88804e22009-10-09 13:20:28 -07001034 /* free tx queue structure */
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001035 il_txq_mem(il);
Zhu Yib481de92007-09-25 17:54:57 -07001036}
1037
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001038void il3945_hw_txq_ctx_stop(struct il_priv *il)
Zhu Yib481de92007-09-25 17:54:57 -07001039{
Tomas Winklerbddadf82008-12-19 10:37:01 +08001040 int txq_id;
Zhu Yib481de92007-09-25 17:54:57 -07001041
1042 /* stop SCD */
Stanislaw Gruszkadb54eb52011-08-24 21:06:33 +02001043 il_wr_prph(il, ALM_SCD_MODE_REG, 0);
1044 il_wr_prph(il, ALM_SCD_TXFACT_REG, 0);
Zhu Yib481de92007-09-25 17:54:57 -07001045
1046 /* reset TFD queues */
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001047 for (txq_id = 0; txq_id < il->hw_params.max_txq_num; txq_id++) {
Stanislaw Gruszka0c1a94e2011-08-24 17:37:16 +02001048 il_wr(il, FH39_TCSR_CONFIG(txq_id), 0x0);
1049 il_poll_bit(il, FH39_TSSR_TX_STATUS,
Tomas Winklerbddadf82008-12-19 10:37:01 +08001050 FH39_TSSR_TX_STATUS_REG_MSK_CHNL_IDLE(txq_id),
Zhu Yib481de92007-09-25 17:54:57 -07001051 1000);
1052 }
1053
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001054 il3945_hw_txq_ctx_free(il);
Zhu Yib481de92007-09-25 17:54:57 -07001055}
1056
Zhu Yib481de92007-09-25 17:54:57 -07001057/**
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02001058 * il3945_hw_reg_adjust_power_by_temp
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001059 * return idx delta into power gain settings table
Ian Schrambbc58072007-10-25 17:15:28 +08001060*/
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02001061static int il3945_hw_reg_adjust_power_by_temp(int new_reading, int old_reading)
Zhu Yib481de92007-09-25 17:54:57 -07001062{
1063 return (new_reading - old_reading) * (-11) / 100;
1064}
1065
1066/**
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02001067 * il3945_hw_reg_temp_out_of_range - Keep temperature in sane range
Zhu Yib481de92007-09-25 17:54:57 -07001068 */
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02001069static inline int il3945_hw_reg_temp_out_of_range(int temperature)
Zhu Yib481de92007-09-25 17:54:57 -07001070{
Stanislaw Gruszka232913b2011-08-26 10:45:16 +02001071 return (temperature < -260 || temperature > 25) ? 1 : 0;
Zhu Yib481de92007-09-25 17:54:57 -07001072}
1073
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001074int il3945_hw_get_temperature(struct il_priv *il)
Zhu Yib481de92007-09-25 17:54:57 -07001075{
Stanislaw Gruszka841b2cc2011-08-24 15:14:03 +02001076 return _il_rd(il, CSR_UCODE_DRV_GP2);
Zhu Yib481de92007-09-25 17:54:57 -07001077}
1078
1079/**
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02001080 * il3945_hw_reg_txpower_get_temperature
Ian Schrambbc58072007-10-25 17:15:28 +08001081 * get the current temperature by reading from NIC
1082*/
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001083static int il3945_hw_reg_txpower_get_temperature(struct il_priv *il)
Zhu Yib481de92007-09-25 17:54:57 -07001084{
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001085 struct il3945_eeprom *eeprom = (struct il3945_eeprom *)il->eeprom;
Zhu Yib481de92007-09-25 17:54:57 -07001086 int temperature;
1087
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001088 temperature = il3945_hw_get_temperature(il);
Zhu Yib481de92007-09-25 17:54:57 -07001089
1090 /* driver's okay range is -260 to +25.
1091 * human readable okay range is 0 to +285 */
Stanislaw Gruszka58de00a2011-11-15 11:21:01 +01001092 D_INFO("Temperature: %d\n", temperature + IL_TEMP_CONVERT);
Zhu Yib481de92007-09-25 17:54:57 -07001093
1094 /* handle insane temp reading */
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02001095 if (il3945_hw_reg_temp_out_of_range(temperature)) {
Stanislaw Gruszka9406f792011-08-18 22:07:57 +02001096 IL_ERR("Error bad temperature value %d\n", temperature);
Zhu Yib481de92007-09-25 17:54:57 -07001097
1098 /* if really really hot(?),
1099 * substitute the 3rd band/group's temp measured at factory */
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001100 if (il->last_temperature > 100)
Samuel Ortize6148912009-01-23 13:45:15 -08001101 temperature = eeprom->groups[2].temperature;
Zhu Yib481de92007-09-25 17:54:57 -07001102 else /* else use most recent "sane" value from driver */
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001103 temperature = il->last_temperature;
Zhu Yib481de92007-09-25 17:54:57 -07001104 }
1105
1106 return temperature; /* raw, not "human readable" */
1107}
1108
1109/* Adjust Txpower only if temperature variance is greater than threshold.
1110 *
1111 * Both are lower than older versions' 9 degrees */
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02001112#define IL_TEMPERATURE_LIMIT_TIMER 6
Zhu Yib481de92007-09-25 17:54:57 -07001113
1114/**
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02001115 * il3945_is_temp_calib_needed - determines if new calibration is needed
Zhu Yib481de92007-09-25 17:54:57 -07001116 *
1117 * records new temperature in tx_mgr->temperature.
1118 * replaces tx_mgr->last_temperature *only* if calib needed
1119 * (assumes caller will actually do the calibration!). */
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001120static int il3945_is_temp_calib_needed(struct il_priv *il)
Zhu Yib481de92007-09-25 17:54:57 -07001121{
1122 int temp_diff;
1123
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001124 il->temperature = il3945_hw_reg_txpower_get_temperature(il);
1125 temp_diff = il->temperature - il->last_temperature;
Zhu Yib481de92007-09-25 17:54:57 -07001126
1127 /* get absolute value */
1128 if (temp_diff < 0) {
Stanislaw Gruszka58de00a2011-11-15 11:21:01 +01001129 D_POWER("Getting cooler, delta %d,\n", temp_diff);
Zhu Yib481de92007-09-25 17:54:57 -07001130 temp_diff = -temp_diff;
1131 } else if (temp_diff == 0)
Stanislaw Gruszka58de00a2011-11-15 11:21:01 +01001132 D_POWER("Same temp,\n");
Zhu Yib481de92007-09-25 17:54:57 -07001133 else
Stanislaw Gruszka58de00a2011-11-15 11:21:01 +01001134 D_POWER("Getting warmer, delta %d,\n", temp_diff);
Zhu Yib481de92007-09-25 17:54:57 -07001135
1136 /* if we don't need calibration, *don't* update last_temperature */
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02001137 if (temp_diff < IL_TEMPERATURE_LIMIT_TIMER) {
Stanislaw Gruszka58de00a2011-11-15 11:21:01 +01001138 D_POWER("Timed thermal calib not needed\n");
Zhu Yib481de92007-09-25 17:54:57 -07001139 return 0;
1140 }
1141
Stanislaw Gruszka58de00a2011-11-15 11:21:01 +01001142 D_POWER("Timed thermal calib needed\n");
Zhu Yib481de92007-09-25 17:54:57 -07001143
1144 /* assume that caller will actually do calib ...
1145 * update the "last temperature" value */
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001146 il->last_temperature = il->temperature;
Zhu Yib481de92007-09-25 17:54:57 -07001147 return 1;
1148}
1149
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02001150#define IL_MAX_GAIN_ENTRIES 78
1151#define IL_CCK_FROM_OFDM_POWER_DIFF -5
Stanislaw Gruszka2d09b062011-08-26 16:10:40 +02001152#define IL_CCK_FROM_OFDM_IDX_DIFF (10)
Zhu Yib481de92007-09-25 17:54:57 -07001153
1154/* radio and DSP power table, each step is 1/2 dB.
1155 * 1st number is for RF analog gain, 2nd number is for DSP pre-DAC gain. */
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02001156static struct il3945_tx_power power_gain_table[2][IL_MAX_GAIN_ENTRIES] = {
Zhu Yib481de92007-09-25 17:54:57 -07001157 {
1158 {251, 127}, /* 2.4 GHz, highest power */
1159 {251, 127},
1160 {251, 127},
1161 {251, 127},
1162 {251, 125},
1163 {251, 110},
1164 {251, 105},
1165 {251, 98},
1166 {187, 125},
1167 {187, 115},
1168 {187, 108},
1169 {187, 99},
1170 {243, 119},
1171 {243, 111},
1172 {243, 105},
1173 {243, 97},
1174 {243, 92},
1175 {211, 106},
1176 {211, 100},
1177 {179, 120},
1178 {179, 113},
1179 {179, 107},
1180 {147, 125},
1181 {147, 119},
1182 {147, 112},
1183 {147, 106},
1184 {147, 101},
1185 {147, 97},
1186 {147, 91},
1187 {115, 107},
1188 {235, 121},
1189 {235, 115},
1190 {235, 109},
1191 {203, 127},
1192 {203, 121},
1193 {203, 115},
1194 {203, 108},
1195 {203, 102},
1196 {203, 96},
1197 {203, 92},
1198 {171, 110},
1199 {171, 104},
1200 {171, 98},
1201 {139, 116},
1202 {227, 125},
1203 {227, 119},
1204 {227, 113},
1205 {227, 107},
1206 {227, 101},
1207 {227, 96},
1208 {195, 113},
1209 {195, 106},
1210 {195, 102},
1211 {195, 95},
1212 {163, 113},
1213 {163, 106},
1214 {163, 102},
1215 {163, 95},
1216 {131, 113},
1217 {131, 106},
1218 {131, 102},
1219 {131, 95},
1220 {99, 113},
1221 {99, 106},
1222 {99, 102},
1223 {99, 95},
1224 {67, 113},
1225 {67, 106},
1226 {67, 102},
1227 {67, 95},
1228 {35, 113},
1229 {35, 106},
1230 {35, 102},
1231 {35, 95},
1232 {3, 113},
1233 {3, 106},
1234 {3, 102},
1235 {3, 95} }, /* 2.4 GHz, lowest power */
1236 {
1237 {251, 127}, /* 5.x GHz, highest power */
1238 {251, 120},
1239 {251, 114},
1240 {219, 119},
1241 {219, 101},
1242 {187, 113},
1243 {187, 102},
1244 {155, 114},
1245 {155, 103},
1246 {123, 117},
1247 {123, 107},
1248 {123, 99},
1249 {123, 92},
1250 {91, 108},
1251 {59, 125},
1252 {59, 118},
1253 {59, 109},
1254 {59, 102},
1255 {59, 96},
1256 {59, 90},
1257 {27, 104},
1258 {27, 98},
1259 {27, 92},
1260 {115, 118},
1261 {115, 111},
1262 {115, 104},
1263 {83, 126},
1264 {83, 121},
1265 {83, 113},
1266 {83, 105},
1267 {83, 99},
1268 {51, 118},
1269 {51, 111},
1270 {51, 104},
1271 {51, 98},
1272 {19, 116},
1273 {19, 109},
1274 {19, 102},
1275 {19, 98},
1276 {19, 93},
1277 {171, 113},
1278 {171, 107},
1279 {171, 99},
1280 {139, 120},
1281 {139, 113},
1282 {139, 107},
1283 {139, 99},
1284 {107, 120},
1285 {107, 113},
1286 {107, 107},
1287 {107, 99},
1288 {75, 120},
1289 {75, 113},
1290 {75, 107},
1291 {75, 99},
1292 {43, 120},
1293 {43, 113},
1294 {43, 107},
1295 {43, 99},
1296 {11, 120},
1297 {11, 113},
1298 {11, 107},
1299 {11, 99},
1300 {131, 107},
1301 {131, 99},
1302 {99, 120},
1303 {99, 113},
1304 {99, 107},
1305 {99, 99},
1306 {67, 120},
1307 {67, 113},
1308 {67, 107},
1309 {67, 99},
1310 {35, 120},
1311 {35, 113},
1312 {35, 107},
1313 {35, 99},
1314 {3, 120} } /* 5.x GHz, lowest power */
1315};
1316
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001317static inline u8 il3945_hw_reg_fix_power_idx(int idx)
Zhu Yib481de92007-09-25 17:54:57 -07001318{
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001319 if (idx < 0)
Zhu Yib481de92007-09-25 17:54:57 -07001320 return 0;
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001321 if (idx >= IL_MAX_GAIN_ENTRIES)
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02001322 return IL_MAX_GAIN_ENTRIES - 1;
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001323 return (u8) idx;
Zhu Yib481de92007-09-25 17:54:57 -07001324}
1325
1326/* Kick off thermal recalibration check every 60 seconds */
1327#define REG_RECALIB_PERIOD (60)
1328
1329/**
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02001330 * il3945_hw_reg_set_scan_power - Set Tx power for scan probe requests
Zhu Yib481de92007-09-25 17:54:57 -07001331 *
1332 * Set (in our channel info database) the direct scan Tx power for 1 Mbit (CCK)
1333 * or 6 Mbit (OFDM) rates.
1334 */
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001335static void il3945_hw_reg_set_scan_power(struct il_priv *il, u32 scan_tbl_idx,
1336 s32 rate_idx, const s8 *clip_pwrs,
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02001337 struct il_channel_info *ch_info,
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001338 int band_idx)
Zhu Yib481de92007-09-25 17:54:57 -07001339{
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02001340 struct il3945_scan_power_info *scan_power_info;
Zhu Yib481de92007-09-25 17:54:57 -07001341 s8 power;
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001342 u8 power_idx;
Zhu Yib481de92007-09-25 17:54:57 -07001343
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001344 scan_power_info = &ch_info->scan_pwr_info[scan_tbl_idx];
Zhu Yib481de92007-09-25 17:54:57 -07001345
1346 /* use this channel group's 6Mbit clipping/saturation pwr,
1347 * but cap at regulatory scan power restriction (set during init
1348 * based on eeprom channel data) for this channel. */
Stanislaw Gruszka3b98c7f2011-08-26 16:29:35 +02001349 power = min(ch_info->scan_power, clip_pwrs[RATE_6M_IDX_TBL]);
Zhu Yib481de92007-09-25 17:54:57 -07001350
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001351 power = min(power, il->tx_power_user_lmt);
Zhu Yib481de92007-09-25 17:54:57 -07001352 scan_power_info->requested_power = power;
1353
1354 /* find difference between new scan *power* and current "normal"
1355 * Tx *power* for 6Mb. Use this difference (x2) to adjust the
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001356 * current "normal" temperature-compensated Tx power *idx* for
Zhu Yib481de92007-09-25 17:54:57 -07001357 * this rate (1Mb or 6Mb) to yield new temp-compensated scan power
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001358 * *idx*. */
1359 power_idx = ch_info->power_info[rate_idx].power_table_idx
Zhu Yib481de92007-09-25 17:54:57 -07001360 - (power - ch_info->power_info
Stanislaw Gruszka3b98c7f2011-08-26 16:29:35 +02001361 [RATE_6M_IDX_TBL].requested_power) * 2;
Zhu Yib481de92007-09-25 17:54:57 -07001362
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001363 /* store reference idx that we use when adjusting *all* scan
Zhu Yib481de92007-09-25 17:54:57 -07001364 * powers. So we can accommodate user (all channel) or spectrum
1365 * management (single channel) power changes "between" temperature
1366 * feedback compensation procedures.
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001367 * don't force fit this reference idx into gain table; it may be a
Zhu Yib481de92007-09-25 17:54:57 -07001368 * negative number. This will help avoid errors when we're at
1369 * the lower bounds (highest gains, for warmest temperatures)
1370 * of the table. */
1371
1372 /* don't exceed table bounds for "real" setting */
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001373 power_idx = il3945_hw_reg_fix_power_idx(power_idx);
Zhu Yib481de92007-09-25 17:54:57 -07001374
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001375 scan_power_info->power_table_idx = power_idx;
Zhu Yib481de92007-09-25 17:54:57 -07001376 scan_power_info->tpc.tx_gain =
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001377 power_gain_table[band_idx][power_idx].tx_gain;
Zhu Yib481de92007-09-25 17:54:57 -07001378 scan_power_info->tpc.dsp_atten =
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001379 power_gain_table[band_idx][power_idx].dsp_atten;
Zhu Yib481de92007-09-25 17:54:57 -07001380}
1381
1382/**
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02001383 * il3945_send_tx_power - fill in Tx Power command with gain settings
Zhu Yib481de92007-09-25 17:54:57 -07001384 *
1385 * Configures power settings for all rates for the current channel,
1386 * using values from channel info struct, and send to NIC
1387 */
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001388static int il3945_send_tx_power(struct il_priv *il)
Zhu Yib481de92007-09-25 17:54:57 -07001389{
Mohamed Abbas14577f22007-11-12 11:37:42 +08001390 int rate_idx, i;
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02001391 const struct il_channel_info *ch_info = NULL;
1392 struct il3945_txpowertable_cmd txpower = {
Stanislaw Gruszka7c2cde22011-11-15 11:29:04 +01001393 .channel = il->ctx.active.channel,
Zhu Yib481de92007-09-25 17:54:57 -07001394 };
Johannes Berg246ed352010-08-23 10:46:32 +02001395 u16 chan;
1396
Stanislaw Gruszkaa6766cc2011-11-15 13:09:01 +01001397 if (WARN_ONCE(test_bit(S_SCAN_HW, &il->status),
Stanislaw Gruszka4beeba72010-10-25 10:34:50 +02001398 "TX Power requested while scanning!\n"))
1399 return -EAGAIN;
1400
Stanislaw Gruszka7c2cde22011-11-15 11:29:04 +01001401 chan = le16_to_cpu(il->ctx.active.channel);
Zhu Yib481de92007-09-25 17:54:57 -07001402
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001403 txpower.band = (il->band == IEEE80211_BAND_5GHZ) ? 0 : 1;
1404 ch_info = il_get_channel_info(il, il->band, chan);
Zhu Yib481de92007-09-25 17:54:57 -07001405 if (!ch_info) {
Stanislaw Gruszka9406f792011-08-18 22:07:57 +02001406 IL_ERR(
Winkler, Tomas15b16872008-12-19 10:37:33 +08001407 "Failed to get channel info for channel %d [%d]\n",
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001408 chan, il->band);
Zhu Yib481de92007-09-25 17:54:57 -07001409 return -EINVAL;
1410 }
1411
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02001412 if (!il_is_channel_valid(ch_info)) {
Stanislaw Gruszka3b98c7f2011-08-26 16:29:35 +02001413 D_POWER("Not calling TX_PWR_TBL_CMD on "
Zhu Yib481de92007-09-25 17:54:57 -07001414 "non-Tx channel.\n");
1415 return 0;
1416 }
1417
1418 /* fill cmd with power settings for all rates for current channel */
Mohamed Abbas14577f22007-11-12 11:37:42 +08001419 /* Fill OFDM rate */
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02001420 for (rate_idx = IL_FIRST_OFDM_RATE, i = 0;
Stanislaw Gruszkad3175162011-11-15 11:25:42 +01001421 rate_idx <= IL39_LAST_OFDM_RATE; rate_idx++, i++) {
Mohamed Abbas14577f22007-11-12 11:37:42 +08001422
1423 txpower.power[i].tpc = ch_info->power_info[i].tpc;
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02001424 txpower.power[i].rate = il3945_rates[rate_idx].plcp;
Zhu Yib481de92007-09-25 17:54:57 -07001425
Stanislaw Gruszka58de00a2011-11-15 11:21:01 +01001426 D_POWER("ch %d:%d rf %d dsp %3d rate code 0x%02x\n",
Zhu Yib481de92007-09-25 17:54:57 -07001427 le16_to_cpu(txpower.channel),
1428 txpower.band,
Mohamed Abbas14577f22007-11-12 11:37:42 +08001429 txpower.power[i].tpc.tx_gain,
1430 txpower.power[i].tpc.dsp_atten,
1431 txpower.power[i].rate);
1432 }
1433 /* Fill CCK rates */
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02001434 for (rate_idx = IL_FIRST_CCK_RATE;
1435 rate_idx <= IL_LAST_CCK_RATE; rate_idx++, i++) {
Mohamed Abbas14577f22007-11-12 11:37:42 +08001436 txpower.power[i].tpc = ch_info->power_info[i].tpc;
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02001437 txpower.power[i].rate = il3945_rates[rate_idx].plcp;
Mohamed Abbas14577f22007-11-12 11:37:42 +08001438
Stanislaw Gruszka58de00a2011-11-15 11:21:01 +01001439 D_POWER("ch %d:%d rf %d dsp %3d rate code 0x%02x\n",
Mohamed Abbas14577f22007-11-12 11:37:42 +08001440 le16_to_cpu(txpower.channel),
1441 txpower.band,
1442 txpower.power[i].tpc.tx_gain,
1443 txpower.power[i].tpc.dsp_atten,
1444 txpower.power[i].rate);
Zhu Yib481de92007-09-25 17:54:57 -07001445 }
1446
Stanislaw Gruszka4d69c752011-08-30 15:26:35 +02001447 return il_send_cmd_pdu(il, C_TX_PWR_TBL,
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02001448 sizeof(struct il3945_txpowertable_cmd),
Samuel Ortiz518099a2009-01-19 15:30:27 -08001449 &txpower);
Zhu Yib481de92007-09-25 17:54:57 -07001450
1451}
1452
1453/**
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02001454 * il3945_hw_reg_set_new_power - Configures power tables at new levels
Zhu Yib481de92007-09-25 17:54:57 -07001455 * @ch_info: Channel to update. Uses power_info.requested_power.
1456 *
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001457 * Replace requested_power and base_power_idx ch_info fields for
Zhu Yib481de92007-09-25 17:54:57 -07001458 * one channel.
1459 *
1460 * Called if user or spectrum management changes power preferences.
1461 * Takes into account h/w and modulation limitations (clip power).
1462 *
1463 * This does *not* send anything to NIC, just sets up ch_info for one channel.
1464 *
1465 * NOTE: reg_compensate_for_temperature_dif() *must* be run after this to
1466 * properly fill out the scan powers, and actual h/w gain settings,
1467 * and send changes to NIC
1468 */
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001469static int il3945_hw_reg_set_new_power(struct il_priv *il,
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02001470 struct il_channel_info *ch_info)
Zhu Yib481de92007-09-25 17:54:57 -07001471{
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02001472 struct il3945_channel_power_info *power_info;
Zhu Yib481de92007-09-25 17:54:57 -07001473 int power_changed = 0;
1474 int i;
1475 const s8 *clip_pwrs;
1476 int power;
1477
1478 /* Get this chnlgrp's rate-to-max/clip-powers table */
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001479 clip_pwrs = il->_3945.clip_groups[ch_info->group_idx].clip_powers;
Zhu Yib481de92007-09-25 17:54:57 -07001480
1481 /* Get this channel's rate-to-current-power settings table */
1482 power_info = ch_info->power_info;
1483
1484 /* update OFDM Txpower settings */
Stanislaw Gruszka3b98c7f2011-08-26 16:29:35 +02001485 for (i = RATE_6M_IDX_TBL; i <= RATE_54M_IDX_TBL;
Zhu Yib481de92007-09-25 17:54:57 -07001486 i++, ++power_info) {
1487 int delta_idx;
1488
1489 /* limit new power to be no more than h/w capability */
1490 power = min(ch_info->curr_txpow, clip_pwrs[i]);
1491 if (power == power_info->requested_power)
1492 continue;
1493
1494 /* find difference between old and new requested powers,
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001495 * update base (non-temp-compensated) power idx */
Zhu Yib481de92007-09-25 17:54:57 -07001496 delta_idx = (power - power_info->requested_power) * 2;
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001497 power_info->base_power_idx -= delta_idx;
Zhu Yib481de92007-09-25 17:54:57 -07001498
1499 /* save new requested power value */
1500 power_info->requested_power = power;
1501
1502 power_changed = 1;
1503 }
1504
1505 /* update CCK Txpower settings, based on OFDM 12M setting ...
1506 * ... all CCK power settings for a given channel are the *same*. */
1507 if (power_changed) {
1508 power =
Stanislaw Gruszka3b98c7f2011-08-26 16:29:35 +02001509 ch_info->power_info[RATE_12M_IDX_TBL].
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02001510 requested_power + IL_CCK_FROM_OFDM_POWER_DIFF;
Zhu Yib481de92007-09-25 17:54:57 -07001511
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02001512 /* do all CCK rates' il3945_channel_power_info structures */
Stanislaw Gruszka3b98c7f2011-08-26 16:29:35 +02001513 for (i = RATE_1M_IDX_TBL; i <= RATE_11M_IDX_TBL; i++) {
Zhu Yib481de92007-09-25 17:54:57 -07001514 power_info->requested_power = power;
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001515 power_info->base_power_idx =
Stanislaw Gruszka3b98c7f2011-08-26 16:29:35 +02001516 ch_info->power_info[RATE_12M_IDX_TBL].
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001517 base_power_idx + IL_CCK_FROM_OFDM_IDX_DIFF;
Zhu Yib481de92007-09-25 17:54:57 -07001518 ++power_info;
1519 }
1520 }
1521
1522 return 0;
1523}
1524
1525/**
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02001526 * il3945_hw_reg_get_ch_txpower_limit - returns new power limit for channel
Zhu Yib481de92007-09-25 17:54:57 -07001527 *
1528 * NOTE: Returned power limit may be less (but not more) than requested,
1529 * based strictly on regulatory (eeprom and spectrum mgt) limitations
1530 * (no consideration for h/w clipping limitations).
1531 */
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02001532static int il3945_hw_reg_get_ch_txpower_limit(struct il_channel_info *ch_info)
Zhu Yib481de92007-09-25 17:54:57 -07001533{
1534 s8 max_power;
1535
1536#if 0
1537 /* if we're using TGd limits, use lower of TGd or EEPROM */
1538 if (ch_info->tgd_data.max_power != 0)
1539 max_power = min(ch_info->tgd_data.max_power,
1540 ch_info->eeprom.max_power_avg);
1541
1542 /* else just use EEPROM limits */
1543 else
1544#endif
1545 max_power = ch_info->eeprom.max_power_avg;
1546
1547 return min(max_power, ch_info->max_power_avg);
1548}
1549
1550/**
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02001551 * il3945_hw_reg_comp_txpower_temp - Compensate for temperature
Zhu Yib481de92007-09-25 17:54:57 -07001552 *
1553 * Compensate txpower settings of *all* channels for temperature.
1554 * This only accounts for the difference between current temperature
1555 * and the factory calibration temperatures, and bases the new settings
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001556 * on the channel's base_power_idx.
Zhu Yib481de92007-09-25 17:54:57 -07001557 *
1558 * If RxOn is "associated", this sends the new Txpower to NIC!
1559 */
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001560static int il3945_hw_reg_comp_txpower_temp(struct il_priv *il)
Zhu Yib481de92007-09-25 17:54:57 -07001561{
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02001562 struct il_channel_info *ch_info = NULL;
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001563 struct il3945_eeprom *eeprom = (struct il3945_eeprom *)il->eeprom;
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001564 int delta_idx;
Zhu Yib481de92007-09-25 17:54:57 -07001565 const s8 *clip_pwrs; /* array of h/w max power levels for each rate */
1566 u8 a_band;
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001567 u8 rate_idx;
1568 u8 scan_tbl_idx;
Zhu Yib481de92007-09-25 17:54:57 -07001569 u8 i;
1570 int ref_temp;
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001571 int temperature = il->temperature;
Zhu Yib481de92007-09-25 17:54:57 -07001572
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001573 if (il->disable_tx_power_cal ||
Stanislaw Gruszkaa6766cc2011-11-15 13:09:01 +01001574 test_bit(S_SCANNING, &il->status)) {
Wey-Yi Guy4e7033e2010-04-27 14:33:33 -07001575 /* do not perform tx power calibration */
1576 return 0;
1577 }
Zhu Yib481de92007-09-25 17:54:57 -07001578 /* set up new Tx power info for each and every channel, 2.4 and 5.x */
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001579 for (i = 0; i < il->channel_count; i++) {
1580 ch_info = &il->channel_info[i];
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02001581 a_band = il_is_channel_a_band(ch_info);
Zhu Yib481de92007-09-25 17:54:57 -07001582
1583 /* Get this chnlgrp's factory calibration temperature */
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001584 ref_temp = (s16)eeprom->groups[ch_info->group_idx].
Zhu Yib481de92007-09-25 17:54:57 -07001585 temperature;
1586
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001587 /* get power idx adjustment based on current and factory
Zhu Yib481de92007-09-25 17:54:57 -07001588 * temps */
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001589 delta_idx = il3945_hw_reg_adjust_power_by_temp(temperature,
Zhu Yib481de92007-09-25 17:54:57 -07001590 ref_temp);
1591
1592 /* set tx power value for all rates, OFDM and CCK */
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001593 for (rate_idx = 0; rate_idx < RATE_COUNT_3945;
1594 rate_idx++) {
Zhu Yib481de92007-09-25 17:54:57 -07001595 int power_idx =
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001596 ch_info->power_info[rate_idx].base_power_idx;
Zhu Yib481de92007-09-25 17:54:57 -07001597
1598 /* temperature compensate */
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001599 power_idx += delta_idx;
Zhu Yib481de92007-09-25 17:54:57 -07001600
1601 /* stay within table range */
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001602 power_idx = il3945_hw_reg_fix_power_idx(power_idx);
1603 ch_info->power_info[rate_idx].
1604 power_table_idx = (u8) power_idx;
1605 ch_info->power_info[rate_idx].tpc =
Zhu Yib481de92007-09-25 17:54:57 -07001606 power_gain_table[a_band][power_idx];
1607 }
1608
1609 /* Get this chnlgrp's rate-to-max/clip-powers table */
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001610 clip_pwrs = il->_3945.clip_groups[ch_info->group_idx].clip_powers;
Zhu Yib481de92007-09-25 17:54:57 -07001611
1612 /* set scan tx power, 1Mbit for CCK, 6Mbit for OFDM */
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001613 for (scan_tbl_idx = 0;
1614 scan_tbl_idx < IL_NUM_SCAN_RATES; scan_tbl_idx++) {
1615 s32 actual_idx = (scan_tbl_idx == 0) ?
Stanislaw Gruszka3b98c7f2011-08-26 16:29:35 +02001616 RATE_1M_IDX_TBL : RATE_6M_IDX_TBL;
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001617 il3945_hw_reg_set_scan_power(il, scan_tbl_idx,
1618 actual_idx, clip_pwrs,
Zhu Yib481de92007-09-25 17:54:57 -07001619 ch_info, a_band);
1620 }
1621 }
1622
1623 /* send Txpower command for current channel to ucode */
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001624 return il->cfg->ops->lib->send_tx_power(il);
Zhu Yib481de92007-09-25 17:54:57 -07001625}
1626
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001627int il3945_hw_reg_set_txpower(struct il_priv *il, s8 power)
Zhu Yib481de92007-09-25 17:54:57 -07001628{
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02001629 struct il_channel_info *ch_info;
Zhu Yib481de92007-09-25 17:54:57 -07001630 s8 max_power;
1631 u8 a_band;
1632 u8 i;
1633
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001634 if (il->tx_power_user_lmt == power) {
Stanislaw Gruszka58de00a2011-11-15 11:21:01 +01001635 D_POWER("Requested Tx power same as current "
Zhu Yib481de92007-09-25 17:54:57 -07001636 "limit: %ddBm.\n", power);
1637 return 0;
1638 }
1639
Stanislaw Gruszka58de00a2011-11-15 11:21:01 +01001640 D_POWER("Setting upper limit clamp to %ddBm.\n", power);
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001641 il->tx_power_user_lmt = power;
Zhu Yib481de92007-09-25 17:54:57 -07001642
1643 /* set up new Tx powers for each and every channel, 2.4 and 5.x */
1644
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001645 for (i = 0; i < il->channel_count; i++) {
1646 ch_info = &il->channel_info[i];
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02001647 a_band = il_is_channel_a_band(ch_info);
Zhu Yib481de92007-09-25 17:54:57 -07001648
1649 /* find minimum power of all user and regulatory constraints
1650 * (does not consider h/w clipping limitations) */
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02001651 max_power = il3945_hw_reg_get_ch_txpower_limit(ch_info);
Zhu Yib481de92007-09-25 17:54:57 -07001652 max_power = min(power, max_power);
1653 if (max_power != ch_info->curr_txpow) {
1654 ch_info->curr_txpow = max_power;
1655
1656 /* this considers the h/w clipping limitations */
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001657 il3945_hw_reg_set_new_power(il, ch_info);
Zhu Yib481de92007-09-25 17:54:57 -07001658 }
1659 }
1660
1661 /* update txpower settings for all channels,
1662 * send to NIC if associated. */
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001663 il3945_is_temp_calib_needed(il);
1664 il3945_hw_reg_comp_txpower_temp(il);
Zhu Yib481de92007-09-25 17:54:57 -07001665
1666 return 0;
1667}
1668
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001669static int il3945_send_rxon_assoc(struct il_priv *il,
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02001670 struct il_rxon_context *ctx)
Abhijeet Kolekar5bbe2332009-04-08 11:26:35 -07001671{
1672 int rc = 0;
Stanislaw Gruszkadcae1c62011-08-26 14:36:21 +02001673 struct il_rx_pkt *pkt;
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02001674 struct il3945_rxon_assoc_cmd rxon_assoc;
1675 struct il_host_cmd cmd = {
Stanislaw Gruszka4d69c752011-08-30 15:26:35 +02001676 .id = C_RXON_ASSOC,
Abhijeet Kolekar5bbe2332009-04-08 11:26:35 -07001677 .len = sizeof(rxon_assoc),
Johannes Bergc2acea82009-07-24 11:13:05 -07001678 .flags = CMD_WANT_SKB,
Abhijeet Kolekar5bbe2332009-04-08 11:26:35 -07001679 .data = &rxon_assoc,
1680 };
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02001681 const struct il_rxon_cmd *rxon1 = &ctx->staging;
1682 const struct il_rxon_cmd *rxon2 = &ctx->active;
Abhijeet Kolekar5bbe2332009-04-08 11:26:35 -07001683
Stanislaw Gruszka232913b2011-08-26 10:45:16 +02001684 if (rxon1->flags == rxon2->flags &&
1685 rxon1->filter_flags == rxon2->filter_flags &&
1686 rxon1->cck_basic_rates == rxon2->cck_basic_rates &&
1687 rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates) {
Stanislaw Gruszka58de00a2011-11-15 11:21:01 +01001688 D_INFO("Using current RXON_ASSOC. Not resending.\n");
Abhijeet Kolekar5bbe2332009-04-08 11:26:35 -07001689 return 0;
1690 }
1691
Johannes Berg246ed352010-08-23 10:46:32 +02001692 rxon_assoc.flags = ctx->staging.flags;
1693 rxon_assoc.filter_flags = ctx->staging.filter_flags;
1694 rxon_assoc.ofdm_basic_rates = ctx->staging.ofdm_basic_rates;
1695 rxon_assoc.cck_basic_rates = ctx->staging.cck_basic_rates;
Abhijeet Kolekar5bbe2332009-04-08 11:26:35 -07001696 rxon_assoc.reserved = 0;
1697
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001698 rc = il_send_cmd_sync(il, &cmd);
Abhijeet Kolekar5bbe2332009-04-08 11:26:35 -07001699 if (rc)
1700 return rc;
1701
Stanislaw Gruszkadcae1c62011-08-26 14:36:21 +02001702 pkt = (struct il_rx_pkt *)cmd.reply_page;
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02001703 if (pkt->hdr.flags & IL_CMD_FAILED_MSK) {
Stanislaw Gruszka4d69c752011-08-30 15:26:35 +02001704 IL_ERR("Bad return from C_RXON_ASSOC command\n");
Abhijeet Kolekar5bbe2332009-04-08 11:26:35 -07001705 rc = -EIO;
1706 }
1707
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001708 il_free_pages(il, cmd.reply_page);
Abhijeet Kolekar5bbe2332009-04-08 11:26:35 -07001709
1710 return rc;
1711}
1712
Abhijeet Kolekare0158e62009-04-08 11:26:37 -07001713/**
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02001714 * il3945_commit_rxon - commit staging_rxon to hardware
Abhijeet Kolekare0158e62009-04-08 11:26:37 -07001715 *
1716 * The RXON command in staging_rxon is committed to the hardware and
1717 * the active_rxon structure is updated with the new data. This
1718 * function correctly transitions out of the RXON_ASSOC_MSK state if
1719 * a HW tune is required based on the RXON structure changes.
1720 */
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001721int il3945_commit_rxon(struct il_priv *il, struct il_rxon_context *ctx)
Abhijeet Kolekare0158e62009-04-08 11:26:37 -07001722{
1723 /* cast away the const for active_rxon in this function */
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02001724 struct il3945_rxon_cmd *active_rxon = (void *)&ctx->active;
1725 struct il3945_rxon_cmd *staging_rxon = (void *)&ctx->staging;
Abhijeet Kolekare0158e62009-04-08 11:26:37 -07001726 int rc = 0;
Johannes Berg246ed352010-08-23 10:46:32 +02001727 bool new_assoc = !!(staging_rxon->filter_flags & RXON_FILTER_ASSOC_MSK);
Abhijeet Kolekare0158e62009-04-08 11:26:37 -07001728
Stanislaw Gruszkaa6766cc2011-11-15 13:09:01 +01001729 if (test_bit(S_EXIT_PENDING, &il->status))
Wey-Yi Guyadb90a02010-11-26 11:09:42 -08001730 return -EINVAL;
1731
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001732 if (!il_is_alive(il))
Abhijeet Kolekare0158e62009-04-08 11:26:37 -07001733 return -1;
1734
1735 /* always get timestamp with Rx frame */
1736 staging_rxon->flags |= RXON_FLG_TSF2HOST_MSK;
1737
1738 /* select antenna */
1739 staging_rxon->flags &=
1740 ~(RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_SEL_MSK);
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001741 staging_rxon->flags |= il3945_get_antenna_flags(il);
Abhijeet Kolekare0158e62009-04-08 11:26:37 -07001742
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001743 rc = il_check_rxon_cmd(il, ctx);
Abhijeet Kolekare0158e62009-04-08 11:26:37 -07001744 if (rc) {
Stanislaw Gruszka9406f792011-08-18 22:07:57 +02001745 IL_ERR("Invalid RXON configuration. Not committing.\n");
Abhijeet Kolekare0158e62009-04-08 11:26:37 -07001746 return -EINVAL;
1747 }
1748
1749 /* If we don't need to send a full RXON, we can use
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02001750 * il3945_rxon_assoc_cmd which is used to reconfigure filter
Abhijeet Kolekare0158e62009-04-08 11:26:37 -07001751 * and other flags for the current radio configuration. */
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001752 if (!il_full_rxon_required(il,
Stanislaw Gruszka7c2cde22011-11-15 11:29:04 +01001753 &il->ctx)) {
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001754 rc = il_send_rxon_assoc(il,
Stanislaw Gruszka7c2cde22011-11-15 11:29:04 +01001755 &il->ctx);
Abhijeet Kolekare0158e62009-04-08 11:26:37 -07001756 if (rc) {
Stanislaw Gruszka9406f792011-08-18 22:07:57 +02001757 IL_ERR("Error setting RXON_ASSOC "
Abhijeet Kolekare0158e62009-04-08 11:26:37 -07001758 "configuration (%d).\n", rc);
1759 return rc;
1760 }
1761
1762 memcpy(active_rxon, staging_rxon, sizeof(*active_rxon));
Stanislaw Gruszka17e859a2011-07-27 15:37:43 +02001763 /*
1764 * We do not commit tx power settings while channel changing,
1765 * do it now if tx power changed.
1766 */
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001767 il_set_tx_power(il, il->tx_power_next, false);
Abhijeet Kolekare0158e62009-04-08 11:26:37 -07001768 return 0;
1769 }
1770
1771 /* If we are currently associated and the new config requires
1772 * an RXON_ASSOC and the new config wants the associated mask enabled,
1773 * we must clear the associated from the active configuration
1774 * before we apply the new config */
Stanislaw Gruszka7c2cde22011-11-15 11:29:04 +01001775 if (il_is_associated(il) && new_assoc) {
Stanislaw Gruszka58de00a2011-11-15 11:21:01 +01001776 D_INFO("Toggling associated bit on current RXON\n");
Abhijeet Kolekare0158e62009-04-08 11:26:37 -07001777 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1778
1779 /*
1780 * reserved4 and 5 could have been filled by the iwlcore code.
1781 * Let's clear them before pushing to the 3945.
1782 */
1783 active_rxon->reserved4 = 0;
1784 active_rxon->reserved5 = 0;
Stanislaw Gruszka4d69c752011-08-30 15:26:35 +02001785 rc = il_send_cmd_pdu(il, C_RXON,
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02001786 sizeof(struct il3945_rxon_cmd),
Stanislaw Gruszka7c2cde22011-11-15 11:29:04 +01001787 &il->ctx.active);
Abhijeet Kolekare0158e62009-04-08 11:26:37 -07001788
1789 /* If the mask clearing failed then we set
1790 * active_rxon back to what it was previously */
1791 if (rc) {
1792 active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
Stanislaw Gruszka9406f792011-08-18 22:07:57 +02001793 IL_ERR("Error clearing ASSOC_MSK on current "
Abhijeet Kolekare0158e62009-04-08 11:26:37 -07001794 "configuration (%d).\n", rc);
1795 return rc;
1796 }
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001797 il_clear_ucode_stations(il,
Stanislaw Gruszka7c2cde22011-11-15 11:29:04 +01001798 &il->ctx);
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001799 il_restore_stations(il,
Stanislaw Gruszka7c2cde22011-11-15 11:29:04 +01001800 &il->ctx);
Abhijeet Kolekare0158e62009-04-08 11:26:37 -07001801 }
1802
Stanislaw Gruszka58de00a2011-11-15 11:21:01 +01001803 D_INFO("Sending RXON\n"
Abhijeet Kolekare0158e62009-04-08 11:26:37 -07001804 "* with%s RXON_FILTER_ASSOC_MSK\n"
1805 "* channel = %d\n"
1806 "* bssid = %pM\n",
1807 (new_assoc ? "" : "out"),
1808 le16_to_cpu(staging_rxon->channel),
1809 staging_rxon->bssid_addr);
1810
1811 /*
1812 * reserved4 and 5 could have been filled by the iwlcore code.
1813 * Let's clear them before pushing to the 3945.
1814 */
1815 staging_rxon->reserved4 = 0;
1816 staging_rxon->reserved5 = 0;
1817
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001818 il_set_rxon_hwcrypto(il, ctx, !il3945_mod_params.sw_crypto);
Abhijeet Kolekare0158e62009-04-08 11:26:37 -07001819
1820 /* Apply the new configuration */
Stanislaw Gruszka4d69c752011-08-30 15:26:35 +02001821 rc = il_send_cmd_pdu(il, C_RXON,
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02001822 sizeof(struct il3945_rxon_cmd),
Abhijeet Kolekare0158e62009-04-08 11:26:37 -07001823 staging_rxon);
1824 if (rc) {
Stanislaw Gruszka9406f792011-08-18 22:07:57 +02001825 IL_ERR("Error setting new configuration (%d).\n", rc);
Abhijeet Kolekare0158e62009-04-08 11:26:37 -07001826 return rc;
1827 }
1828
1829 memcpy(active_rxon, staging_rxon, sizeof(*active_rxon));
1830
Reinette Chatre7e246192010-02-18 22:58:32 -08001831 if (!new_assoc) {
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001832 il_clear_ucode_stations(il,
Stanislaw Gruszka7c2cde22011-11-15 11:29:04 +01001833 &il->ctx);
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001834 il_restore_stations(il,
Stanislaw Gruszka7c2cde22011-11-15 11:29:04 +01001835 &il->ctx);
Reinette Chatre7e246192010-02-18 22:58:32 -08001836 }
Abhijeet Kolekare0158e62009-04-08 11:26:37 -07001837
1838 /* If we issue a new RXON command which required a tune then we must
1839 * send a new TXPOWER command or we won't be able to Tx any frames */
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001840 rc = il_set_tx_power(il, il->tx_power_next, true);
Abhijeet Kolekare0158e62009-04-08 11:26:37 -07001841 if (rc) {
Stanislaw Gruszka9406f792011-08-18 22:07:57 +02001842 IL_ERR("Error setting Tx power (%d).\n", rc);
Abhijeet Kolekare0158e62009-04-08 11:26:37 -07001843 return rc;
1844 }
1845
Abhijeet Kolekare0158e62009-04-08 11:26:37 -07001846 /* Init the hardware's rate fallback order based on the band */
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001847 rc = il3945_init_hw_rate_table(il);
Abhijeet Kolekare0158e62009-04-08 11:26:37 -07001848 if (rc) {
Stanislaw Gruszka9406f792011-08-18 22:07:57 +02001849 IL_ERR("Error setting HW rate table: %02X\n", rc);
Abhijeet Kolekare0158e62009-04-08 11:26:37 -07001850 return -EIO;
1851 }
1852
1853 return 0;
1854}
1855
Zhu Yib481de92007-09-25 17:54:57 -07001856/**
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02001857 * il3945_reg_txpower_periodic - called when time to check our temperature.
Zhu Yib481de92007-09-25 17:54:57 -07001858 *
1859 * -- reset periodic timer
1860 * -- see if temp has changed enough to warrant re-calibration ... if so:
1861 * -- correct coeffs for temp (can reset temp timer)
1862 * -- save this temp as "last",
1863 * -- send new set of gain settings to NIC
1864 * NOTE: This should continue working, even when we're not associated,
1865 * so we can keep our internal table of scan powers current. */
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001866void il3945_reg_txpower_periodic(struct il_priv *il)
Zhu Yib481de92007-09-25 17:54:57 -07001867{
1868 /* This will kick in the "brute force"
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02001869 * il3945_hw_reg_comp_txpower_temp() below */
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001870 if (!il3945_is_temp_calib_needed(il))
Zhu Yib481de92007-09-25 17:54:57 -07001871 goto reschedule;
1872
1873 /* Set up a new set of temp-adjusted TxPowers, send to NIC.
1874 * This is based *only* on current temperature,
1875 * ignoring any previous power measurements */
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001876 il3945_hw_reg_comp_txpower_temp(il);
Zhu Yib481de92007-09-25 17:54:57 -07001877
1878 reschedule:
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001879 queue_delayed_work(il->workqueue,
1880 &il->_3945.thermal_periodic, REG_RECALIB_PERIOD * HZ);
Zhu Yib481de92007-09-25 17:54:57 -07001881}
1882
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02001883static void il3945_bg_reg_txpower_periodic(struct work_struct *work)
Zhu Yib481de92007-09-25 17:54:57 -07001884{
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001885 struct il_priv *il = container_of(work, struct il_priv,
Johannes Bergee525d12010-01-21 06:09:28 -08001886 _3945.thermal_periodic.work);
Zhu Yib481de92007-09-25 17:54:57 -07001887
Stanislaw Gruszkaa6766cc2011-11-15 13:09:01 +01001888 if (test_bit(S_EXIT_PENDING, &il->status))
Zhu Yib481de92007-09-25 17:54:57 -07001889 return;
1890
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001891 mutex_lock(&il->mutex);
1892 il3945_reg_txpower_periodic(il);
1893 mutex_unlock(&il->mutex);
Zhu Yib481de92007-09-25 17:54:57 -07001894}
1895
1896/**
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001897 * il3945_hw_reg_get_ch_grp_idx - find the channel-group idx (0-4)
Zhu Yib481de92007-09-25 17:54:57 -07001898 * for the channel.
1899 *
1900 * This function is used when initializing channel-info structs.
1901 *
1902 * NOTE: These channel groups do *NOT* match the bands above!
1903 * These channel groups are based on factory-tested channels;
1904 * on A-band, EEPROM's "group frequency" entries represent the top
1905 * channel in each group 1-4. Group 5 All B/G channels are in group 0.
1906 */
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001907static u16 il3945_hw_reg_get_ch_grp_idx(struct il_priv *il,
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02001908 const struct il_channel_info *ch_info)
Zhu Yib481de92007-09-25 17:54:57 -07001909{
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001910 struct il3945_eeprom *eeprom = (struct il3945_eeprom *)il->eeprom;
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02001911 struct il3945_eeprom_txpower_group *ch_grp = &eeprom->groups[0];
Zhu Yib481de92007-09-25 17:54:57 -07001912 u8 group;
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001913 u16 group_idx = 0; /* based on factory calib frequencies */
Zhu Yib481de92007-09-25 17:54:57 -07001914 u8 grp_channel;
1915
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001916 /* Find the group idx for the channel ... don't use idx 1(?) */
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02001917 if (il_is_channel_a_band(ch_info)) {
Zhu Yib481de92007-09-25 17:54:57 -07001918 for (group = 1; group < 5; group++) {
1919 grp_channel = ch_grp[group].group_channel;
1920 if (ch_info->channel <= grp_channel) {
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001921 group_idx = group;
Zhu Yib481de92007-09-25 17:54:57 -07001922 break;
1923 }
1924 }
1925 /* group 4 has a few channels *above* its factory cal freq */
1926 if (group == 5)
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001927 group_idx = 4;
Zhu Yib481de92007-09-25 17:54:57 -07001928 } else
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001929 group_idx = 0; /* 2.4 GHz, group 0 */
Zhu Yib481de92007-09-25 17:54:57 -07001930
Stanislaw Gruszka58de00a2011-11-15 11:21:01 +01001931 D_POWER("Chnl %d mapped to grp %d\n", ch_info->channel,
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001932 group_idx);
1933 return group_idx;
Zhu Yib481de92007-09-25 17:54:57 -07001934}
1935
1936/**
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001937 * il3945_hw_reg_get_matched_power_idx - Interpolate to get nominal idx
Zhu Yib481de92007-09-25 17:54:57 -07001938 *
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001939 * Interpolate to get nominal (i.e. at factory calibration temperature) idx
Zhu Yib481de92007-09-25 17:54:57 -07001940 * into radio/DSP gain settings table for requested power.
1941 */
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001942static int il3945_hw_reg_get_matched_power_idx(struct il_priv *il,
Zhu Yib481de92007-09-25 17:54:57 -07001943 s8 requested_power,
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001944 s32 setting_idx, s32 *new_idx)
Zhu Yib481de92007-09-25 17:54:57 -07001945{
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02001946 const struct il3945_eeprom_txpower_group *chnl_grp = NULL;
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001947 struct il3945_eeprom *eeprom = (struct il3945_eeprom *)il->eeprom;
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001948 s32 idx0, idx1;
Zhu Yib481de92007-09-25 17:54:57 -07001949 s32 power = 2 * requested_power;
1950 s32 i;
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02001951 const struct il3945_eeprom_txpower_sample *samples;
Zhu Yib481de92007-09-25 17:54:57 -07001952 s32 gains0, gains1;
1953 s32 res;
1954 s32 denominator;
1955
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001956 chnl_grp = &eeprom->groups[setting_idx];
Zhu Yib481de92007-09-25 17:54:57 -07001957 samples = chnl_grp->samples;
1958 for (i = 0; i < 5; i++) {
1959 if (power == samples[i].power) {
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001960 *new_idx = samples[i].gain_idx;
Zhu Yib481de92007-09-25 17:54:57 -07001961 return 0;
1962 }
1963 }
1964
1965 if (power > samples[1].power) {
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001966 idx0 = 0;
1967 idx1 = 1;
Zhu Yib481de92007-09-25 17:54:57 -07001968 } else if (power > samples[2].power) {
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001969 idx0 = 1;
1970 idx1 = 2;
Zhu Yib481de92007-09-25 17:54:57 -07001971 } else if (power > samples[3].power) {
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001972 idx0 = 2;
1973 idx1 = 3;
Zhu Yib481de92007-09-25 17:54:57 -07001974 } else {
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001975 idx0 = 3;
1976 idx1 = 4;
Zhu Yib481de92007-09-25 17:54:57 -07001977 }
1978
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001979 denominator = (s32) samples[idx1].power - (s32) samples[idx0].power;
Zhu Yib481de92007-09-25 17:54:57 -07001980 if (denominator == 0)
1981 return -EINVAL;
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001982 gains0 = (s32) samples[idx0].gain_idx * (1 << 19);
1983 gains1 = (s32) samples[idx1].gain_idx * (1 << 19);
Zhu Yib481de92007-09-25 17:54:57 -07001984 res = gains0 + (gains1 - gains0) *
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001985 ((s32) power - (s32) samples[idx0].power) / denominator +
Zhu Yib481de92007-09-25 17:54:57 -07001986 (1 << 18);
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001987 *new_idx = res >> 19;
Zhu Yib481de92007-09-25 17:54:57 -07001988 return 0;
1989}
1990
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001991static void il3945_hw_reg_init_channel_groups(struct il_priv *il)
Zhu Yib481de92007-09-25 17:54:57 -07001992{
1993 u32 i;
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01001994 s32 rate_idx;
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02001995 struct il3945_eeprom *eeprom = (struct il3945_eeprom *)il->eeprom;
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02001996 const struct il3945_eeprom_txpower_group *group;
Zhu Yib481de92007-09-25 17:54:57 -07001997
Stanislaw Gruszka58de00a2011-11-15 11:21:01 +01001998 D_POWER("Initializing factory calib info from EEPROM\n");
Zhu Yib481de92007-09-25 17:54:57 -07001999
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02002000 for (i = 0; i < IL_NUM_TX_CALIB_GROUPS; i++) {
Zhu Yib481de92007-09-25 17:54:57 -07002001 s8 *clip_pwrs; /* table of power levels for each rate */
2002 s8 satur_pwr; /* saturation power for each chnl group */
Samuel Ortize6148912009-01-23 13:45:15 -08002003 group = &eeprom->groups[i];
Zhu Yib481de92007-09-25 17:54:57 -07002004
2005 /* sanity check on factory saturation power value */
2006 if (group->saturation_power < 40) {
Stanislaw Gruszka9406f792011-08-18 22:07:57 +02002007 IL_WARN("Error: saturation power is %d, "
Zhu Yib481de92007-09-25 17:54:57 -07002008 "less than minimum expected 40\n",
2009 group->saturation_power);
2010 return;
2011 }
2012
2013 /*
2014 * Derive requested power levels for each rate, based on
2015 * hardware capabilities (saturation power for band).
2016 * Basic value is 3dB down from saturation, with further
2017 * power reductions for highest 3 data rates. These
2018 * backoffs provide headroom for high rate modulation
2019 * power peaks, without too much distortion (clipping).
2020 */
2021 /* we'll fill in this array with h/w max power levels */
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02002022 clip_pwrs = (s8 *) il->_3945.clip_groups[i].clip_powers;
Zhu Yib481de92007-09-25 17:54:57 -07002023
2024 /* divide factory saturation power by 2 to find -3dB level */
2025 satur_pwr = (s8) (group->saturation_power >> 1);
2026
2027 /* fill in channel group's nominal powers for each rate */
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01002028 for (rate_idx = 0;
2029 rate_idx < RATE_COUNT_3945; rate_idx++, clip_pwrs++) {
2030 switch (rate_idx) {
Stanislaw Gruszka3b98c7f2011-08-26 16:29:35 +02002031 case RATE_36M_IDX_TBL:
Zhu Yib481de92007-09-25 17:54:57 -07002032 if (i == 0) /* B/G */
2033 *clip_pwrs = satur_pwr;
2034 else /* A */
2035 *clip_pwrs = satur_pwr - 5;
2036 break;
Stanislaw Gruszka3b98c7f2011-08-26 16:29:35 +02002037 case RATE_48M_IDX_TBL:
Zhu Yib481de92007-09-25 17:54:57 -07002038 if (i == 0)
2039 *clip_pwrs = satur_pwr - 7;
2040 else
2041 *clip_pwrs = satur_pwr - 10;
2042 break;
Stanislaw Gruszka3b98c7f2011-08-26 16:29:35 +02002043 case RATE_54M_IDX_TBL:
Zhu Yib481de92007-09-25 17:54:57 -07002044 if (i == 0)
2045 *clip_pwrs = satur_pwr - 9;
2046 else
2047 *clip_pwrs = satur_pwr - 12;
2048 break;
2049 default:
2050 *clip_pwrs = satur_pwr;
2051 break;
2052 }
2053 }
2054 }
2055}
2056
2057/**
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02002058 * il3945_txpower_set_from_eeprom - Set channel power info based on EEPROM
Zhu Yib481de92007-09-25 17:54:57 -07002059 *
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02002060 * Second pass (during init) to set up il->channel_info
Zhu Yib481de92007-09-25 17:54:57 -07002061 *
2062 * Set up Tx-power settings in our channel info database for each VALID
2063 * (for this geo/SKU) channel, at all Tx data rates, based on eeprom values
2064 * and current temperature.
2065 *
2066 * Since this is based on current temperature (at init time), these values may
2067 * not be valid for very long, but it gives us a starting/default point,
2068 * and allows us to active (i.e. using Tx) scan.
2069 *
2070 * This does *not* write values to NIC, just sets up our internal table.
2071 */
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02002072int il3945_txpower_set_from_eeprom(struct il_priv *il)
Zhu Yib481de92007-09-25 17:54:57 -07002073{
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02002074 struct il_channel_info *ch_info = NULL;
2075 struct il3945_channel_power_info *pwr_info;
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02002076 struct il3945_eeprom *eeprom = (struct il3945_eeprom *)il->eeprom;
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01002077 int delta_idx;
2078 u8 rate_idx;
2079 u8 scan_tbl_idx;
Zhu Yib481de92007-09-25 17:54:57 -07002080 const s8 *clip_pwrs; /* array of power levels for each rate */
2081 u8 gain, dsp_atten;
2082 s8 power;
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01002083 u8 pwr_idx, base_pwr_idx, a_band;
Zhu Yib481de92007-09-25 17:54:57 -07002084 u8 i;
2085 int temperature;
2086
2087 /* save temperature reference,
2088 * so we can determine next time to calibrate */
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02002089 temperature = il3945_hw_reg_txpower_get_temperature(il);
2090 il->last_temperature = temperature;
Zhu Yib481de92007-09-25 17:54:57 -07002091
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02002092 il3945_hw_reg_init_channel_groups(il);
Zhu Yib481de92007-09-25 17:54:57 -07002093
2094 /* initialize Tx power info for each and every channel, 2.4 and 5.x */
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02002095 for (i = 0, ch_info = il->channel_info; i < il->channel_count;
Zhu Yib481de92007-09-25 17:54:57 -07002096 i++, ch_info++) {
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02002097 a_band = il_is_channel_a_band(ch_info);
2098 if (!il_is_channel_valid(ch_info))
Zhu Yib481de92007-09-25 17:54:57 -07002099 continue;
2100
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01002101 /* find this channel's channel group (*not* "band") idx */
2102 ch_info->group_idx =
2103 il3945_hw_reg_get_ch_grp_idx(il, ch_info);
Zhu Yib481de92007-09-25 17:54:57 -07002104
2105 /* Get this chnlgrp's rate->max/clip-powers table */
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01002106 clip_pwrs = il->_3945.clip_groups[ch_info->group_idx].clip_powers;
Zhu Yib481de92007-09-25 17:54:57 -07002107
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01002108 /* calculate power idx *adjustment* value according to
Zhu Yib481de92007-09-25 17:54:57 -07002109 * diff between current temperature and factory temperature */
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01002110 delta_idx = il3945_hw_reg_adjust_power_by_temp(temperature,
2111 eeprom->groups[ch_info->group_idx].
Zhu Yib481de92007-09-25 17:54:57 -07002112 temperature);
2113
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01002114 D_POWER("Delta idx for channel %d: %d [%d]\n",
2115 ch_info->channel, delta_idx, temperature +
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02002116 IL_TEMP_CONVERT);
Zhu Yib481de92007-09-25 17:54:57 -07002117
2118 /* set tx power value for all OFDM rates */
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01002119 for (rate_idx = 0; rate_idx < IL_OFDM_RATES;
2120 rate_idx++) {
John W. Linville25a4cce2009-01-12 14:44:52 -05002121 s32 uninitialized_var(power_idx);
Zhu Yib481de92007-09-25 17:54:57 -07002122 int rc;
2123
2124 /* use channel group's clip-power table,
2125 * but don't exceed channel's max power */
2126 s8 pwr = min(ch_info->max_power_avg,
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01002127 clip_pwrs[rate_idx]);
Zhu Yib481de92007-09-25 17:54:57 -07002128
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01002129 pwr_info = &ch_info->power_info[rate_idx];
Zhu Yib481de92007-09-25 17:54:57 -07002130
2131 /* get base (i.e. at factory-measured temperature)
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01002132 * power table idx for this rate's power */
2133 rc = il3945_hw_reg_get_matched_power_idx(il, pwr,
2134 ch_info->group_idx,
Zhu Yib481de92007-09-25 17:54:57 -07002135 &power_idx);
2136 if (rc) {
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01002137 IL_ERR("Invalid power idx\n");
Zhu Yib481de92007-09-25 17:54:57 -07002138 return rc;
2139 }
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01002140 pwr_info->base_power_idx = (u8) power_idx;
Zhu Yib481de92007-09-25 17:54:57 -07002141
2142 /* temperature compensate */
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01002143 power_idx += delta_idx;
Zhu Yib481de92007-09-25 17:54:57 -07002144
2145 /* stay within range of gain table */
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01002146 power_idx = il3945_hw_reg_fix_power_idx(power_idx);
Zhu Yib481de92007-09-25 17:54:57 -07002147
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02002148 /* fill 1 OFDM rate's il3945_channel_power_info struct */
Zhu Yib481de92007-09-25 17:54:57 -07002149 pwr_info->requested_power = pwr;
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01002150 pwr_info->power_table_idx = (u8) power_idx;
Zhu Yib481de92007-09-25 17:54:57 -07002151 pwr_info->tpc.tx_gain =
2152 power_gain_table[a_band][power_idx].tx_gain;
2153 pwr_info->tpc.dsp_atten =
2154 power_gain_table[a_band][power_idx].dsp_atten;
2155 }
2156
2157 /* set tx power for CCK rates, based on OFDM 12 Mbit settings*/
Stanislaw Gruszka3b98c7f2011-08-26 16:29:35 +02002158 pwr_info = &ch_info->power_info[RATE_12M_IDX_TBL];
Zhu Yib481de92007-09-25 17:54:57 -07002159 power = pwr_info->requested_power +
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02002160 IL_CCK_FROM_OFDM_POWER_DIFF;
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01002161 pwr_idx = pwr_info->power_table_idx +
Stanislaw Gruszka2d09b062011-08-26 16:10:40 +02002162 IL_CCK_FROM_OFDM_IDX_DIFF;
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01002163 base_pwr_idx = pwr_info->base_power_idx +
Stanislaw Gruszka2d09b062011-08-26 16:10:40 +02002164 IL_CCK_FROM_OFDM_IDX_DIFF;
Zhu Yib481de92007-09-25 17:54:57 -07002165
2166 /* stay within table range */
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01002167 pwr_idx = il3945_hw_reg_fix_power_idx(pwr_idx);
2168 gain = power_gain_table[a_band][pwr_idx].tx_gain;
2169 dsp_atten = power_gain_table[a_band][pwr_idx].dsp_atten;
Zhu Yib481de92007-09-25 17:54:57 -07002170
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02002171 /* fill each CCK rate's il3945_channel_power_info structure
Zhu Yib481de92007-09-25 17:54:57 -07002172 * NOTE: All CCK-rate Txpwrs are the same for a given chnl!
2173 * NOTE: CCK rates start at end of OFDM rates! */
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01002174 for (rate_idx = 0;
2175 rate_idx < IL_CCK_RATES; rate_idx++) {
2176 pwr_info = &ch_info->power_info[rate_idx+IL_OFDM_RATES];
Zhu Yib481de92007-09-25 17:54:57 -07002177 pwr_info->requested_power = power;
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01002178 pwr_info->power_table_idx = pwr_idx;
2179 pwr_info->base_power_idx = base_pwr_idx;
Zhu Yib481de92007-09-25 17:54:57 -07002180 pwr_info->tpc.tx_gain = gain;
2181 pwr_info->tpc.dsp_atten = dsp_atten;
2182 }
2183
2184 /* set scan tx power, 1Mbit for CCK, 6Mbit for OFDM */
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01002185 for (scan_tbl_idx = 0;
2186 scan_tbl_idx < IL_NUM_SCAN_RATES; scan_tbl_idx++) {
2187 s32 actual_idx = (scan_tbl_idx == 0) ?
Stanislaw Gruszka3b98c7f2011-08-26 16:29:35 +02002188 RATE_1M_IDX_TBL : RATE_6M_IDX_TBL;
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01002189 il3945_hw_reg_set_scan_power(il, scan_tbl_idx,
2190 actual_idx, clip_pwrs, ch_info, a_band);
Zhu Yib481de92007-09-25 17:54:57 -07002191 }
2192 }
2193
2194 return 0;
2195}
2196
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02002197int il3945_hw_rxq_stop(struct il_priv *il)
Zhu Yib481de92007-09-25 17:54:57 -07002198{
2199 int rc;
Zhu Yib481de92007-09-25 17:54:57 -07002200
Stanislaw Gruszka0c1a94e2011-08-24 17:37:16 +02002201 il_wr(il, FH39_RCSR_CONFIG(0), 0);
2202 rc = il_poll_bit(il, FH39_RSSR_STATUS,
Tomas Winklerbddadf82008-12-19 10:37:01 +08002203 FH39_RSSR_CHNL0_RX_STATUS_CHNL_IDLE, 1000);
Zhu Yib481de92007-09-25 17:54:57 -07002204 if (rc < 0)
Stanislaw Gruszka9406f792011-08-18 22:07:57 +02002205 IL_ERR("Can't stop Rx DMA.\n");
Zhu Yib481de92007-09-25 17:54:57 -07002206
Zhu Yib481de92007-09-25 17:54:57 -07002207 return 0;
2208}
2209
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02002210int il3945_hw_tx_queue_init(struct il_priv *il, struct il_tx_queue *txq)
Zhu Yib481de92007-09-25 17:54:57 -07002211{
Zhu Yib481de92007-09-25 17:54:57 -07002212 int txq_id = txq->q.id;
2213
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02002214 struct il3945_shared *shared_data = il->_3945.shared_virt;
Zhu Yib481de92007-09-25 17:54:57 -07002215
2216 shared_data->tx_base_ptr[txq_id] = cpu_to_le32((u32)txq->q.dma_addr);
2217
Stanislaw Gruszka0c1a94e2011-08-24 17:37:16 +02002218 il_wr(il, FH39_CBCC_CTRL(txq_id), 0);
2219 il_wr(il, FH39_CBCC_BASE(txq_id), 0);
Zhu Yib481de92007-09-25 17:54:57 -07002220
Stanislaw Gruszka0c1a94e2011-08-24 17:37:16 +02002221 il_wr(il, FH39_TCSR_CONFIG(txq_id),
Tomas Winklerbddadf82008-12-19 10:37:01 +08002222 FH39_TCSR_TX_CONFIG_REG_VAL_CIRQ_RTC_NOINT |
2223 FH39_TCSR_TX_CONFIG_REG_VAL_MSG_MODE_TXF |
2224 FH39_TCSR_TX_CONFIG_REG_VAL_CIRQ_HOST_IFTFD |
2225 FH39_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_ENABLE_VAL |
2226 FH39_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE);
Zhu Yib481de92007-09-25 17:54:57 -07002227
2228 /* fake read to flush all prev. writes */
Stanislaw Gruszka841b2cc2011-08-24 15:14:03 +02002229 _il_rd(il, FH39_TSSR_CBB_BASE);
Zhu Yib481de92007-09-25 17:54:57 -07002230
2231 return 0;
2232}
2233
Kolekar, Abhijeet42427b42008-12-22 11:31:15 +08002234/*
2235 * HCMD utils
2236 */
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02002237static u16 il3945_get_hcmd_size(u8 cmd_id, u16 len)
Kolekar, Abhijeet42427b42008-12-22 11:31:15 +08002238{
2239 switch (cmd_id) {
Stanislaw Gruszka4d69c752011-08-30 15:26:35 +02002240 case C_RXON:
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02002241 return sizeof(struct il3945_rxon_cmd);
Stanislaw Gruszka4d69c752011-08-30 15:26:35 +02002242 case C_POWER_TBL:
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02002243 return sizeof(struct il3945_powertable_cmd);
Kolekar, Abhijeet42427b42008-12-22 11:31:15 +08002244 default:
2245 return len;
2246 }
2247}
2248
Tomas Winklerc587de02009-06-03 11:44:07 -07002249
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02002250static u16 il3945_build_addsta_hcmd(const struct il_addsta_cmd *cmd,
Wey-Yi Guybe663ab2011-02-21 11:27:26 -08002251 u8 *data)
Samuel Ortiz17f841c2009-01-23 13:45:20 -08002252{
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02002253 struct il3945_addsta_cmd *addsta = (struct il3945_addsta_cmd *)data;
Tomas Winklerc587de02009-06-03 11:44:07 -07002254 addsta->mode = cmd->mode;
2255 memcpy(&addsta->sta, &cmd->sta, sizeof(struct sta_id_modify));
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02002256 memcpy(&addsta->key, &cmd->key, sizeof(struct il4965_keyinfo));
Tomas Winklerc587de02009-06-03 11:44:07 -07002257 addsta->station_flags = cmd->station_flags;
2258 addsta->station_flags_msk = cmd->station_flags_msk;
2259 addsta->tid_disable_tx = cpu_to_le16(0);
2260 addsta->rate_n_flags = cmd->rate_n_flags;
2261 addsta->add_immediate_ba_tid = cmd->add_immediate_ba_tid;
2262 addsta->remove_immediate_ba_tid = cmd->remove_immediate_ba_tid;
2263 addsta->add_immediate_ba_ssn = cmd->add_immediate_ba_ssn;
2264
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02002265 return (u16)sizeof(struct il3945_addsta_cmd);
Samuel Ortiz17f841c2009-01-23 13:45:20 -08002266}
2267
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02002268static int il3945_add_bssid_station(struct il_priv *il,
Johannes Berga30e3112010-09-22 18:02:01 +02002269 const u8 *addr, u8 *sta_id_r)
2270{
Stanislaw Gruszka7c2cde22011-11-15 11:29:04 +01002271 struct il_rxon_context *ctx = &il->ctx;
Johannes Berga30e3112010-09-22 18:02:01 +02002272 int ret;
2273 u8 sta_id;
2274 unsigned long flags;
2275
2276 if (sta_id_r)
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02002277 *sta_id_r = IL_INVALID_STATION;
Johannes Berga30e3112010-09-22 18:02:01 +02002278
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02002279 ret = il_add_station_common(il, ctx, addr, 0, NULL, &sta_id);
Johannes Berga30e3112010-09-22 18:02:01 +02002280 if (ret) {
Stanislaw Gruszka9406f792011-08-18 22:07:57 +02002281 IL_ERR("Unable to add station %pM\n", addr);
Johannes Berga30e3112010-09-22 18:02:01 +02002282 return ret;
2283 }
2284
2285 if (sta_id_r)
2286 *sta_id_r = sta_id;
2287
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02002288 spin_lock_irqsave(&il->sta_lock, flags);
2289 il->stations[sta_id].used |= IL_STA_LOCAL;
2290 spin_unlock_irqrestore(&il->sta_lock, flags);
Johannes Berga30e3112010-09-22 18:02:01 +02002291
2292 return 0;
2293}
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02002294static int il3945_manage_ibss_station(struct il_priv *il,
Johannes Berg1fa61b22010-04-28 08:44:52 -07002295 struct ieee80211_vif *vif, bool add)
2296{
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02002297 struct il_vif_priv *vif_priv = (void *)vif->drv_priv;
Johannes Berg1fa61b22010-04-28 08:44:52 -07002298 int ret;
2299
Johannes Berg1fa61b22010-04-28 08:44:52 -07002300 if (add) {
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02002301 ret = il3945_add_bssid_station(il, vif->bss_conf.bssid,
Johannes Berga30e3112010-09-22 18:02:01 +02002302 &vif_priv->ibss_bssid_sta_id);
Johannes Berg1fa61b22010-04-28 08:44:52 -07002303 if (ret)
2304 return ret;
2305
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02002306 il3945_sync_sta(il, vif_priv->ibss_bssid_sta_id,
2307 (il->band == IEEE80211_BAND_5GHZ) ?
Stanislaw Gruszka2eb05812011-08-26 16:07:43 +02002308 RATE_6M_PLCP : RATE_1M_PLCP);
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02002309 il3945_rate_scale_init(il->hw, vif_priv->ibss_bssid_sta_id);
Johannes Berg1fa61b22010-04-28 08:44:52 -07002310
2311 return 0;
2312 }
2313
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02002314 return il_remove_station(il, vif_priv->ibss_bssid_sta_id,
Johannes Bergfd1af152010-04-30 11:30:43 -07002315 vif->bss_conf.bssid);
Johannes Berg1fa61b22010-04-28 08:44:52 -07002316}
Tomas Winklerc587de02009-06-03 11:44:07 -07002317
Zhu Yib481de92007-09-25 17:54:57 -07002318/**
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02002319 * il3945_init_hw_rate_table - Initialize the hardware rate fallback table
Zhu Yib481de92007-09-25 17:54:57 -07002320 */
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02002321int il3945_init_hw_rate_table(struct il_priv *il)
Zhu Yib481de92007-09-25 17:54:57 -07002322{
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01002323 int rc, i, idx, prev_idx;
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02002324 struct il3945_rate_scaling_cmd rate_cmd = {
Zhu Yib481de92007-09-25 17:54:57 -07002325 .reserved = {0, 0, 0},
2326 };
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02002327 struct il3945_rate_scaling_info *table = rate_cmd.table;
Zhu Yib481de92007-09-25 17:54:57 -07002328
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02002329 for (i = 0; i < ARRAY_SIZE(il3945_rates); i++) {
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01002330 idx = il3945_rates[i].table_rs_idx;
Mohamed Abbas14577f22007-11-12 11:37:42 +08002331
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01002332 table[idx].rate_n_flags =
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02002333 il3945_hw_set_rate_n_flags(il3945_rates[i].plcp, 0);
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01002334 table[idx].try_cnt = il->retry_rate;
2335 prev_idx = il3945_get_prev_ieee_rate(i);
2336 table[idx].next_rate_idx =
2337 il3945_rates[prev_idx].table_rs_idx;
Zhu Yib481de92007-09-25 17:54:57 -07002338 }
2339
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02002340 switch (il->band) {
Johannes Berg8318d782008-01-24 19:38:38 +01002341 case IEEE80211_BAND_5GHZ:
Stanislaw Gruszka58de00a2011-11-15 11:21:01 +01002342 D_RATE("Select A mode rate scale\n");
Zhu Yib481de92007-09-25 17:54:57 -07002343 /* If one of the following CCK rates is used,
2344 * have it fall back to the 6M OFDM rate */
Stanislaw Gruszka3b98c7f2011-08-26 16:29:35 +02002345 for (i = RATE_1M_IDX_TBL;
2346 i <= RATE_11M_IDX_TBL; i++)
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01002347 table[i].next_rate_idx =
2348 il3945_rates[IL_FIRST_OFDM_RATE].table_rs_idx;
Zhu Yib481de92007-09-25 17:54:57 -07002349
2350 /* Don't fall back to CCK rates */
Stanislaw Gruszka3b98c7f2011-08-26 16:29:35 +02002351 table[RATE_12M_IDX_TBL].next_rate_idx =
2352 RATE_9M_IDX_TBL;
Zhu Yib481de92007-09-25 17:54:57 -07002353
2354 /* Don't drop out of OFDM rates */
Stanislaw Gruszka3b98c7f2011-08-26 16:29:35 +02002355 table[RATE_6M_IDX_TBL].next_rate_idx =
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01002356 il3945_rates[IL_FIRST_OFDM_RATE].table_rs_idx;
Zhu Yib481de92007-09-25 17:54:57 -07002357 break;
2358
Johannes Berg8318d782008-01-24 19:38:38 +01002359 case IEEE80211_BAND_2GHZ:
Stanislaw Gruszka58de00a2011-11-15 11:21:01 +01002360 D_RATE("Select B/G mode rate scale\n");
Zhu Yib481de92007-09-25 17:54:57 -07002361 /* If an OFDM rate is used, have it fall back to the
2362 * 1M CCK rates */
Zhu Yib481de92007-09-25 17:54:57 -07002363
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02002364 if (!(il->_3945.sta_supp_rates & IL_OFDM_RATES_MASK) &&
Stanislaw Gruszka7c2cde22011-11-15 11:29:04 +01002365 il_is_associated(il)) {
Abbas, Mohamed72627962008-12-05 07:58:37 -08002366
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01002367 idx = IL_FIRST_CCK_RATE;
Stanislaw Gruszka3b98c7f2011-08-26 16:29:35 +02002368 for (i = RATE_6M_IDX_TBL;
2369 i <= RATE_54M_IDX_TBL; i++)
Stanislaw Gruszka0c2c8852011-11-15 12:30:17 +01002370 table[i].next_rate_idx =
2371 il3945_rates[idx].table_rs_idx;
Abbas, Mohamed72627962008-12-05 07:58:37 -08002372
Stanislaw Gruszka3b98c7f2011-08-26 16:29:35 +02002373 idx = RATE_11M_IDX_TBL;
Abbas, Mohamed72627962008-12-05 07:58:37 -08002374 /* CCK shouldn't fall back to OFDM... */
Stanislaw Gruszka3b98c7f2011-08-26 16:29:35 +02002375 table[idx].next_rate_idx = RATE_5M_IDX_TBL;
Abbas, Mohamed72627962008-12-05 07:58:37 -08002376 }
Zhu Yib481de92007-09-25 17:54:57 -07002377 break;
2378
2379 default:
Johannes Berg8318d782008-01-24 19:38:38 +01002380 WARN_ON(1);
Zhu Yib481de92007-09-25 17:54:57 -07002381 break;
2382 }
2383
2384 /* Update the rate scaling for control frame Tx */
2385 rate_cmd.table_id = 0;
Stanislaw Gruszka4d69c752011-08-30 15:26:35 +02002386 rc = il_send_cmd_pdu(il, C_RATE_SCALE, sizeof(rate_cmd),
Zhu Yib481de92007-09-25 17:54:57 -07002387 &rate_cmd);
2388 if (rc)
2389 return rc;
2390
2391 /* Update the rate scaling for data frame Tx */
2392 rate_cmd.table_id = 1;
Stanislaw Gruszka4d69c752011-08-30 15:26:35 +02002393 return il_send_cmd_pdu(il, C_RATE_SCALE, sizeof(rate_cmd),
Zhu Yib481de92007-09-25 17:54:57 -07002394 &rate_cmd);
2395}
2396
Ben Cahill796083c2007-11-29 11:09:45 +08002397/* Called when initializing driver */
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02002398int il3945_hw_set_hw_params(struct il_priv *il)
Zhu Yib481de92007-09-25 17:54:57 -07002399{
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02002400 memset((void *)&il->hw_params, 0,
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02002401 sizeof(struct il_hw_params));
Zhu Yib481de92007-09-25 17:54:57 -07002402
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02002403 il->_3945.shared_virt =
2404 dma_alloc_coherent(&il->pci_dev->dev,
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02002405 sizeof(struct il3945_shared),
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02002406 &il->_3945.shared_phys, GFP_KERNEL);
2407 if (!il->_3945.shared_virt) {
Stanislaw Gruszka9406f792011-08-18 22:07:57 +02002408 IL_ERR("failed to allocate pci memory\n");
Zhu Yib481de92007-09-25 17:54:57 -07002409 return -ENOMEM;
2410 }
2411
Abhijeet Kolekar21c02a12009-03-17 21:51:48 -07002412 /* Assign number of Usable TX queues */
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02002413 il->hw_params.max_txq_num = il->cfg->base_params->num_of_queues;
Abhijeet Kolekar21c02a12009-03-17 21:51:48 -07002414
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02002415 il->hw_params.tfd_size = sizeof(struct il3945_tfd);
2416 il->hw_params.rx_page_order = get_order(IL_RX_BUF_SIZE_3K);
2417 il->hw_params.max_rxq_size = RX_QUEUE_SIZE;
2418 il->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG;
Stanislaw Gruszkad3175162011-11-15 11:25:42 +01002419 il->hw_params.max_stations = IL3945_STATION_COUNT;
Stanislaw Gruszka7c2cde22011-11-15 11:29:04 +01002420 il->ctx.bcast_sta_id = IL3945_BROADCAST_ID;
Tomas Winkler3e82a822008-02-13 11:32:31 -08002421
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02002422 il->sta_key_max_num = STA_KEY_MAX_NUM;
Johannes Bergc10afb62010-08-23 10:46:43 +02002423
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02002424 il->hw_params.rx_wrt_ptr_reg = FH39_RSCSR_CHNL0_WPTR;
Stanislaw Gruszkad3175162011-11-15 11:25:42 +01002425 il->hw_params.max_beacon_itrvl = IL39_MAX_UCODE_BEACON_INTERVAL;
2426 il->hw_params.beacon_time_tsf_bits = IL3945_EXT_BEACON_TIME_POS;
Winkler, Tomas141c43a2009-01-08 10:19:53 -08002427
Zhu Yib481de92007-09-25 17:54:57 -07002428 return 0;
2429}
2430
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02002431unsigned int il3945_hw_get_beacon_cmd(struct il_priv *il,
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02002432 struct il3945_frame *frame, u8 rate)
Zhu Yib481de92007-09-25 17:54:57 -07002433{
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02002434 struct il3945_tx_beacon_cmd *tx_beacon_cmd;
Zhu Yib481de92007-09-25 17:54:57 -07002435 unsigned int frame_size;
2436
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02002437 tx_beacon_cmd = (struct il3945_tx_beacon_cmd *)&frame->u;
Zhu Yib481de92007-09-25 17:54:57 -07002438 memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));
2439
Johannes Berga194e322010-08-27 08:53:46 -07002440 tx_beacon_cmd->tx.sta_id =
Stanislaw Gruszka7c2cde22011-11-15 11:29:04 +01002441 il->ctx.bcast_sta_id;
Zhu Yib481de92007-09-25 17:54:57 -07002442 tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2443
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02002444 frame_size = il3945_fill_beacon_frame(il,
Zhu Yib481de92007-09-25 17:54:57 -07002445 tx_beacon_cmd->frame,
Zhu Yib481de92007-09-25 17:54:57 -07002446 sizeof(frame->u) - sizeof(*tx_beacon_cmd));
2447
2448 BUG_ON(frame_size > MAX_MPDU_SIZE);
2449 tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
2450
2451 tx_beacon_cmd->tx.rate = rate;
2452 tx_beacon_cmd->tx.tx_flags = (TX_CMD_FLG_SEQ_CTL_MSK |
2453 TX_CMD_FLG_TSF_MSK);
2454
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02002455 /* supp_rates[0] == OFDM start at IL_FIRST_OFDM_RATE*/
Mohamed Abbas14577f22007-11-12 11:37:42 +08002456 tx_beacon_cmd->tx.supp_rates[0] =
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02002457 (IL_OFDM_BASIC_RATES_MASK >> IL_FIRST_OFDM_RATE) & 0xFF;
Zhu Yib481de92007-09-25 17:54:57 -07002458
Zhu Yib481de92007-09-25 17:54:57 -07002459 tx_beacon_cmd->tx.supp_rates[1] =
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02002460 (IL_CCK_BASIC_RATES_MASK & 0xF);
Zhu Yib481de92007-09-25 17:54:57 -07002461
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02002462 return sizeof(struct il3945_tx_beacon_cmd) + frame_size;
Zhu Yib481de92007-09-25 17:54:57 -07002463}
2464
Stanislaw Gruszkad0c72342011-08-30 15:39:42 +02002465void il3945_hw_handler_setup(struct il_priv *il)
Zhu Yib481de92007-09-25 17:54:57 -07002466{
Stanislaw Gruszka6e9848b42011-08-30 15:45:31 +02002467 il->handlers[C_TX] = il3945_hdl_tx;
2468 il->handlers[N_3945_RX] = il3945_hdl_rx;
Zhu Yib481de92007-09-25 17:54:57 -07002469}
2470
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02002471void il3945_hw_setup_deferred_work(struct il_priv *il)
Zhu Yib481de92007-09-25 17:54:57 -07002472{
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02002473 INIT_DELAYED_WORK(&il->_3945.thermal_periodic,
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02002474 il3945_bg_reg_txpower_periodic);
Zhu Yib481de92007-09-25 17:54:57 -07002475}
2476
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02002477void il3945_hw_cancel_deferred_work(struct il_priv *il)
Zhu Yib481de92007-09-25 17:54:57 -07002478{
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02002479 cancel_delayed_work(&il->_3945.thermal_periodic);
Zhu Yib481de92007-09-25 17:54:57 -07002480}
2481
Kolekar, Abhijeet0164b9b2008-12-19 10:37:37 +08002482/* check contents of special bootstrap uCode SRAM */
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02002483static int il3945_verify_bsm(struct il_priv *il)
Kolekar, Abhijeet0164b9b2008-12-19 10:37:37 +08002484 {
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02002485 __le32 *image = il->ucode_boot.v_addr;
2486 u32 len = il->ucode_boot.len;
Kolekar, Abhijeet0164b9b2008-12-19 10:37:37 +08002487 u32 reg;
2488 u32 val;
2489
Stanislaw Gruszka58de00a2011-11-15 11:21:01 +01002490 D_INFO("Begin verify bsm\n");
Kolekar, Abhijeet0164b9b2008-12-19 10:37:37 +08002491
2492 /* verify BSM SRAM contents */
Stanislaw Gruszkadb54eb52011-08-24 21:06:33 +02002493 val = il_rd_prph(il, BSM_WR_DWCOUNT_REG);
Kolekar, Abhijeet0164b9b2008-12-19 10:37:37 +08002494 for (reg = BSM_SRAM_LOWER_BOUND;
2495 reg < BSM_SRAM_LOWER_BOUND + len;
2496 reg += sizeof(u32), image++) {
Stanislaw Gruszkadb54eb52011-08-24 21:06:33 +02002497 val = il_rd_prph(il, reg);
Kolekar, Abhijeet0164b9b2008-12-19 10:37:37 +08002498 if (val != le32_to_cpu(*image)) {
Stanislaw Gruszka9406f792011-08-18 22:07:57 +02002499 IL_ERR("BSM uCode verification failed at "
Kolekar, Abhijeet0164b9b2008-12-19 10:37:37 +08002500 "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
2501 BSM_SRAM_LOWER_BOUND,
2502 reg - BSM_SRAM_LOWER_BOUND, len,
2503 val, le32_to_cpu(*image));
2504 return -EIO;
2505 }
2506 }
2507
Stanislaw Gruszka58de00a2011-11-15 11:21:01 +01002508 D_INFO("BSM bootstrap uCode image OK\n");
Kolekar, Abhijeet0164b9b2008-12-19 10:37:37 +08002509
2510 return 0;
2511}
2512
Samuel Ortize6148912009-01-23 13:45:15 -08002513
2514/******************************************************************************
2515 *
2516 * EEPROM related functions
2517 *
2518 ******************************************************************************/
2519
2520/*
2521 * Clear the OWNER_MSK, to establish driver (instead of uCode running on
2522 * embedded controller) as EEPROM reader; each read is a series of pulses
2523 * to/from the EEPROM chip, not a single event, so even reads could conflict
2524 * if they weren't arbitrated by some ownership mechanism. Here, the driver
2525 * simply claims ownership, which should be safe when this function is called
2526 * (i.e. before loading uCode!).
2527 */
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02002528static int il3945_eeprom_acquire_semaphore(struct il_priv *il)
Samuel Ortize6148912009-01-23 13:45:15 -08002529{
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02002530 _il_clear_bit(il, CSR_EEPROM_GP, CSR_EEPROM_GP_IF_OWNER_MSK);
Samuel Ortize6148912009-01-23 13:45:15 -08002531 return 0;
2532}
2533
2534
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02002535static void il3945_eeprom_release_semaphore(struct il_priv *il)
Samuel Ortize6148912009-01-23 13:45:15 -08002536{
2537 return;
2538}
2539
Kolekar, Abhijeet0164b9b2008-12-19 10:37:37 +08002540 /**
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02002541 * il3945_load_bsm - Load bootstrap instructions
Kolekar, Abhijeet0164b9b2008-12-19 10:37:37 +08002542 *
2543 * BSM operation:
2544 *
2545 * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
2546 * in special SRAM that does not power down during RFKILL. When powering back
2547 * up after power-saving sleeps (or during initial uCode load), the BSM loads
2548 * the bootstrap program into the on-board processor, and starts it.
2549 *
2550 * The bootstrap program loads (via DMA) instructions and data for a new
2551 * program from host DRAM locations indicated by the host driver in the
2552 * BSM_DRAM_* registers. Once the new program is loaded, it starts
2553 * automatically.
2554 *
2555 * When initializing the NIC, the host driver points the BSM to the
2556 * "initialize" uCode image. This uCode sets up some internal data, then
2557 * notifies host via "initialize alive" that it is complete.
2558 *
2559 * The host then replaces the BSM_DRAM_* pointer values to point to the
2560 * normal runtime uCode instructions and a backup uCode data cache buffer
2561 * (filled initially with starting data values for the on-board processor),
2562 * then triggers the "initialize" uCode to load and launch the runtime uCode,
2563 * which begins normal operation.
2564 *
2565 * When doing a power-save shutdown, runtime uCode saves data SRAM into
2566 * the backup data cache in DRAM before SRAM is powered down.
2567 *
2568 * When powering back up, the BSM loads the bootstrap program. This reloads
2569 * the runtime uCode instructions and the backup data cache into SRAM,
2570 * and re-launches the runtime uCode from where it left off.
2571 */
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02002572static int il3945_load_bsm(struct il_priv *il)
Kolekar, Abhijeet0164b9b2008-12-19 10:37:37 +08002573{
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02002574 __le32 *image = il->ucode_boot.v_addr;
2575 u32 len = il->ucode_boot.len;
Kolekar, Abhijeet0164b9b2008-12-19 10:37:37 +08002576 dma_addr_t pinst;
2577 dma_addr_t pdata;
2578 u32 inst_len;
2579 u32 data_len;
2580 int rc;
2581 int i;
2582 u32 done;
2583 u32 reg_offset;
2584
Stanislaw Gruszka58de00a2011-11-15 11:21:01 +01002585 D_INFO("Begin load bsm\n");
Kolekar, Abhijeet0164b9b2008-12-19 10:37:37 +08002586
2587 /* make sure bootstrap program is no larger than BSM's SRAM size */
Stanislaw Gruszkad3175162011-11-15 11:25:42 +01002588 if (len > IL39_MAX_BSM_SIZE)
Kolekar, Abhijeet0164b9b2008-12-19 10:37:37 +08002589 return -EINVAL;
2590
2591 /* Tell bootstrap uCode where to find the "Initialize" uCode
2592 * in host DRAM ... host DRAM physical address bits 31:0 for 3945.
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02002593 * NOTE: il3945_initialize_alive_start() will replace these values,
Kolekar, Abhijeet0164b9b2008-12-19 10:37:37 +08002594 * after the "initialize" uCode has run, to point to
2595 * runtime/protocol instructions and backup data cache. */
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02002596 pinst = il->ucode_init.p_addr;
2597 pdata = il->ucode_init_data.p_addr;
2598 inst_len = il->ucode_init.len;
2599 data_len = il->ucode_init_data.len;
Kolekar, Abhijeet0164b9b2008-12-19 10:37:37 +08002600
Stanislaw Gruszkadb54eb52011-08-24 21:06:33 +02002601 il_wr_prph(il, BSM_DRAM_INST_PTR_REG, pinst);
2602 il_wr_prph(il, BSM_DRAM_DATA_PTR_REG, pdata);
2603 il_wr_prph(il, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
2604 il_wr_prph(il, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
Kolekar, Abhijeet0164b9b2008-12-19 10:37:37 +08002605
2606 /* Fill BSM memory with bootstrap instructions */
2607 for (reg_offset = BSM_SRAM_LOWER_BOUND;
2608 reg_offset < BSM_SRAM_LOWER_BOUND + len;
2609 reg_offset += sizeof(u32), image++)
Stanislaw Gruszkadb54eb52011-08-24 21:06:33 +02002610 _il_wr_prph(il, reg_offset,
Kolekar, Abhijeet0164b9b2008-12-19 10:37:37 +08002611 le32_to_cpu(*image));
2612
Stanislaw Gruszka46bc8d42011-10-24 16:49:25 +02002613 rc = il3945_verify_bsm(il);
Mohamed Abbasa8b50a02009-05-22 11:01:47 -07002614 if (rc)
Kolekar, Abhijeet0164b9b2008-12-19 10:37:37 +08002615 return rc;
Kolekar, Abhijeet0164b9b2008-12-19 10:37:37 +08002616
2617 /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
Stanislaw Gruszkadb54eb52011-08-24 21:06:33 +02002618 il_wr_prph(il, BSM_WR_MEM_SRC_REG, 0x0);
2619 il_wr_prph(il, BSM_WR_MEM_DST_REG,
Stanislaw Gruszkad3175162011-11-15 11:25:42 +01002620 IL39_RTC_INST_LOWER_BOUND);
Stanislaw Gruszkadb54eb52011-08-24 21:06:33 +02002621 il_wr_prph(il, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
Kolekar, Abhijeet0164b9b2008-12-19 10:37:37 +08002622
2623 /* Load bootstrap code into instruction SRAM now,
2624 * to prepare to load "initialize" uCode */
Stanislaw Gruszkadb54eb52011-08-24 21:06:33 +02002625 il_wr_prph(il, BSM_WR_CTRL_REG,
Kolekar, Abhijeet0164b9b2008-12-19 10:37:37 +08002626 BSM_WR_CTRL_REG_BIT_START);
2627
2628 /* Wait for load of bootstrap uCode to finish */
2629 for (i = 0; i < 100; i++) {
Stanislaw Gruszkadb54eb52011-08-24 21:06:33 +02002630 done = il_rd_prph(il, BSM_WR_CTRL_REG);
Kolekar, Abhijeet0164b9b2008-12-19 10:37:37 +08002631 if (!(done & BSM_WR_CTRL_REG_BIT_START))
2632 break;
2633 udelay(10);
2634 }
2635 if (i < 100)
Stanislaw Gruszka58de00a2011-11-15 11:21:01 +01002636 D_INFO("BSM write complete, poll %d iterations\n", i);
Kolekar, Abhijeet0164b9b2008-12-19 10:37:37 +08002637 else {
Stanislaw Gruszka9406f792011-08-18 22:07:57 +02002638 IL_ERR("BSM write did not complete!\n");
Kolekar, Abhijeet0164b9b2008-12-19 10:37:37 +08002639 return -EIO;
2640 }
2641
2642 /* Enable future boot loads whenever power management unit triggers it
2643 * (e.g. when powering back up after power-save shutdown) */
Stanislaw Gruszkadb54eb52011-08-24 21:06:33 +02002644 il_wr_prph(il, BSM_WR_CTRL_REG,
Kolekar, Abhijeet0164b9b2008-12-19 10:37:37 +08002645 BSM_WR_CTRL_REG_BIT_START_EN);
2646
Kolekar, Abhijeet0164b9b2008-12-19 10:37:37 +08002647 return 0;
2648}
2649
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02002650static struct il_hcmd_ops il3945_hcmd = {
2651 .rxon_assoc = il3945_send_rxon_assoc,
2652 .commit_rxon = il3945_commit_rxon,
Abhijeet Kolekar5bbe2332009-04-08 11:26:35 -07002653};
2654
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02002655static struct il_lib_ops il3945_lib = {
2656 .txq_attach_buf_to_tfd = il3945_hw_txq_attach_buf_to_tfd,
2657 .txq_free_tfd = il3945_hw_txq_free_tfd,
2658 .txq_init = il3945_hw_tx_queue_init,
2659 .load_ucode = il3945_load_bsm,
2660 .dump_nic_error_log = il3945_dump_nic_error_log,
Kolekar, Abhijeet01ec6162008-12-19 10:37:38 +08002661 .apm_ops = {
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02002662 .init = il3945_apm_init,
2663 .config = il3945_nic_config,
Kolekar, Abhijeet01ec6162008-12-19 10:37:38 +08002664 },
Samuel Ortize6148912009-01-23 13:45:15 -08002665 .eeprom_ops = {
2666 .regulatory_bands = {
2667 EEPROM_REGULATORY_BAND_1_CHANNELS,
2668 EEPROM_REGULATORY_BAND_2_CHANNELS,
2669 EEPROM_REGULATORY_BAND_3_CHANNELS,
2670 EEPROM_REGULATORY_BAND_4_CHANNELS,
2671 EEPROM_REGULATORY_BAND_5_CHANNELS,
Wey-Yi Guy7aafef12009-08-07 15:41:38 -07002672 EEPROM_REGULATORY_BAND_NO_HT40,
2673 EEPROM_REGULATORY_BAND_NO_HT40,
Samuel Ortize6148912009-01-23 13:45:15 -08002674 },
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02002675 .acquire_semaphore = il3945_eeprom_acquire_semaphore,
2676 .release_semaphore = il3945_eeprom_release_semaphore,
Samuel Ortize6148912009-01-23 13:45:15 -08002677 },
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02002678 .send_tx_power = il3945_send_tx_power,
2679 .is_valid_rtc_data_addr = il3945_hw_valid_rtc_data_addr,
Abhijeet Kolekar17f36fc2010-04-16 10:03:54 -07002680
2681 .debugfs_ops = {
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02002682 .rx_stats_read = il3945_ucode_rx_stats_read,
2683 .tx_stats_read = il3945_ucode_tx_stats_read,
2684 .general_stats_read = il3945_ucode_general_stats_read,
Abhijeet Kolekar17f36fc2010-04-16 10:03:54 -07002685 },
Kolekar, Abhijeet0164b9b2008-12-19 10:37:37 +08002686};
2687
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02002688static const struct il_legacy_ops il3945_legacy_ops = {
2689 .post_associate = il3945_post_associate,
2690 .config_ap = il3945_config_ap,
2691 .manage_ibss_station = il3945_manage_ibss_station,
Johannes Berg2295c662010-10-23 09:15:41 -07002692};
2693
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02002694static struct il_hcmd_utils_ops il3945_hcmd_utils = {
2695 .get_hcmd_size = il3945_get_hcmd_size,
2696 .build_addsta_hcmd = il3945_build_addsta_hcmd,
2697 .request_scan = il3945_request_scan,
2698 .post_scan = il3945_post_scan,
Kolekar, Abhijeet42427b42008-12-22 11:31:15 +08002699};
2700
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02002701static const struct il_ops il3945_ops = {
2702 .lib = &il3945_lib,
2703 .hcmd = &il3945_hcmd,
2704 .utils = &il3945_hcmd_utils,
2705 .led = &il3945_led_ops,
2706 .legacy = &il3945_legacy_ops,
2707 .ieee80211_ops = &il3945_hw_ops,
Kolekar, Abhijeet0164b9b2008-12-19 10:37:37 +08002708};
2709
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02002710static struct il_base_params il3945_base_params = {
Stanislaw Gruszkad3175162011-11-15 11:25:42 +01002711 .eeprom_size = IL3945_EEPROM_IMG_SIZE,
2712 .num_of_queues = IL39_NUM_QUEUES,
Ben Cahillfadb3582009-10-23 13:42:21 -07002713 .pll_cfg_val = CSR39_ANA_PLL_CFG_VAL,
2714 .set_l0s = false,
2715 .use_bsm = true,
Wey-Yi Guyf2d0d0e2009-09-11 10:38:14 -07002716 .led_compensation = 64,
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02002717 .wd_timeout = IL_DEF_WD_TIMEOUT,
Tomas Winkler82b9a122008-03-04 18:09:30 -08002718};
2719
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02002720static struct il_cfg il3945_bg_cfg = {
Wey-Yi Guy7cb1b082010-10-06 08:10:00 -07002721 .name = "3945BG",
Stanislaw Gruszkad3175162011-11-15 11:25:42 +01002722 .fw_name_pre = IL3945_FW_PRE,
2723 .ucode_api_max = IL3945_UCODE_API_MAX,
2724 .ucode_api_min = IL3945_UCODE_API_MIN,
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02002725 .sku = IL_SKU_G,
Wey-Yi Guy7cb1b082010-10-06 08:10:00 -07002726 .eeprom_ver = EEPROM_3945_EEPROM_VERSION,
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02002727 .ops = &il3945_ops,
2728 .mod_params = &il3945_mod_params,
2729 .base_params = &il3945_base_params,
2730 .led_mode = IL_LED_BLINK,
Wey-Yi Guy7cb1b082010-10-06 08:10:00 -07002731};
2732
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02002733static struct il_cfg il3945_abg_cfg = {
Tomas Winkler82b9a122008-03-04 18:09:30 -08002734 .name = "3945ABG",
Stanislaw Gruszkad3175162011-11-15 11:25:42 +01002735 .fw_name_pre = IL3945_FW_PRE,
2736 .ucode_api_max = IL3945_UCODE_API_MAX,
2737 .ucode_api_min = IL3945_UCODE_API_MIN,
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02002738 .sku = IL_SKU_A|IL_SKU_G,
Samuel Ortize6148912009-01-23 13:45:15 -08002739 .eeprom_ver = EEPROM_3945_EEPROM_VERSION,
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02002740 .ops = &il3945_ops,
2741 .mod_params = &il3945_mod_params,
2742 .base_params = &il3945_base_params,
2743 .led_mode = IL_LED_BLINK,
Tomas Winkler82b9a122008-03-04 18:09:30 -08002744};
2745
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02002746DEFINE_PCI_DEVICE_TABLE(il3945_hw_card_ids) = {
2747 {IL_PCI_DEVICE(0x4222, 0x1005, il3945_bg_cfg)},
2748 {IL_PCI_DEVICE(0x4222, 0x1034, il3945_bg_cfg)},
2749 {IL_PCI_DEVICE(0x4222, 0x1044, il3945_bg_cfg)},
2750 {IL_PCI_DEVICE(0x4227, 0x1014, il3945_bg_cfg)},
2751 {IL_PCI_DEVICE(0x4222, PCI_ANY_ID, il3945_abg_cfg)},
2752 {IL_PCI_DEVICE(0x4227, PCI_ANY_ID, il3945_abg_cfg)},
Zhu Yib481de92007-09-25 17:54:57 -07002753 {0}
2754};
2755
Stanislaw Gruszkae2ebc832011-10-24 15:41:30 +02002756MODULE_DEVICE_TABLE(pci, il3945_hw_card_ids);