Wey-Yi Guy | e04ed0a | 2010-03-16 17:47:58 -0700 | [diff] [blame] | 1 | /****************************************************************************** |
| 2 | * |
| 3 | * GPL LICENSE SUMMARY |
| 4 | * |
Wey-Yi Guy | 901069c | 2011-04-05 09:42:00 -0700 | [diff] [blame] | 5 | * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. |
Wey-Yi Guy | e04ed0a | 2010-03-16 17:47:58 -0700 | [diff] [blame] | 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of version 2 of the GNU General Public License as |
| 9 | * published by the Free Software Foundation. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, but |
| 12 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 14 | * General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, |
| 19 | * USA |
| 20 | * |
| 21 | * The full GNU General Public License is included in this distribution |
| 22 | * in the file called LICENSE.GPL. |
| 23 | * |
| 24 | * Contact Information: |
| 25 | * Intel Linux Wireless <ilw@linux.intel.com> |
| 26 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
| 27 | * |
| 28 | *****************************************************************************/ |
Wey-Yi Guy | 8d80108 | 2010-03-17 13:34:36 -0700 | [diff] [blame] | 29 | #include <linux/etherdevice.h> |
Wey-Yi Guy | e04ed0a | 2010-03-16 17:47:58 -0700 | [diff] [blame] | 30 | #include <linux/kernel.h> |
| 31 | #include <linux/module.h> |
| 32 | #include <linux/init.h> |
| 33 | #include <linux/sched.h> |
| 34 | |
| 35 | #include "iwl-dev.h" |
| 36 | #include "iwl-core.h" |
| 37 | #include "iwl-io.h" |
| 38 | #include "iwl-helpers.h" |
| 39 | #include "iwl-agn-hw.h" |
| 40 | #include "iwl-agn.h" |
Johannes Berg | 1fa61b2 | 2010-04-28 08:44:52 -0700 | [diff] [blame] | 41 | #include "iwl-sta.h" |
Emmanuel Grumbach | bdfbf09 | 2011-07-08 08:46:16 -0700 | [diff] [blame] | 42 | #include "iwl-trans.h" |
Wey-Yi Guy | e04ed0a | 2010-03-16 17:47:58 -0700 | [diff] [blame] | 43 | |
Wey-Yi Guy | 898dade | 2010-09-20 09:12:33 -0700 | [diff] [blame] | 44 | static inline u32 iwlagn_get_scd_ssn(struct iwlagn_tx_resp *tx_resp) |
Wey-Yi Guy | e04ed0a | 2010-03-16 17:47:58 -0700 | [diff] [blame] | 45 | { |
| 46 | return le32_to_cpup((__le32 *)&tx_resp->status + |
| 47 | tx_resp->frame_count) & MAX_SN; |
| 48 | } |
| 49 | |
Wey-Yi Guy | 91835ba | 2010-09-05 10:49:41 -0700 | [diff] [blame] | 50 | static void iwlagn_count_tx_err_status(struct iwl_priv *priv, u16 status) |
| 51 | { |
| 52 | status &= TX_STATUS_MSK; |
| 53 | |
| 54 | switch (status) { |
| 55 | case TX_STATUS_POSTPONE_DELAY: |
| 56 | priv->_agn.reply_tx_stats.pp_delay++; |
| 57 | break; |
| 58 | case TX_STATUS_POSTPONE_FEW_BYTES: |
| 59 | priv->_agn.reply_tx_stats.pp_few_bytes++; |
| 60 | break; |
| 61 | case TX_STATUS_POSTPONE_BT_PRIO: |
| 62 | priv->_agn.reply_tx_stats.pp_bt_prio++; |
| 63 | break; |
| 64 | case TX_STATUS_POSTPONE_QUIET_PERIOD: |
| 65 | priv->_agn.reply_tx_stats.pp_quiet_period++; |
| 66 | break; |
| 67 | case TX_STATUS_POSTPONE_CALC_TTAK: |
| 68 | priv->_agn.reply_tx_stats.pp_calc_ttak++; |
| 69 | break; |
| 70 | case TX_STATUS_FAIL_INTERNAL_CROSSED_RETRY: |
| 71 | priv->_agn.reply_tx_stats.int_crossed_retry++; |
| 72 | break; |
| 73 | case TX_STATUS_FAIL_SHORT_LIMIT: |
| 74 | priv->_agn.reply_tx_stats.short_limit++; |
| 75 | break; |
| 76 | case TX_STATUS_FAIL_LONG_LIMIT: |
| 77 | priv->_agn.reply_tx_stats.long_limit++; |
| 78 | break; |
| 79 | case TX_STATUS_FAIL_FIFO_UNDERRUN: |
| 80 | priv->_agn.reply_tx_stats.fifo_underrun++; |
| 81 | break; |
| 82 | case TX_STATUS_FAIL_DRAIN_FLOW: |
| 83 | priv->_agn.reply_tx_stats.drain_flow++; |
| 84 | break; |
| 85 | case TX_STATUS_FAIL_RFKILL_FLUSH: |
| 86 | priv->_agn.reply_tx_stats.rfkill_flush++; |
| 87 | break; |
| 88 | case TX_STATUS_FAIL_LIFE_EXPIRE: |
| 89 | priv->_agn.reply_tx_stats.life_expire++; |
| 90 | break; |
| 91 | case TX_STATUS_FAIL_DEST_PS: |
| 92 | priv->_agn.reply_tx_stats.dest_ps++; |
| 93 | break; |
| 94 | case TX_STATUS_FAIL_HOST_ABORTED: |
| 95 | priv->_agn.reply_tx_stats.host_abort++; |
| 96 | break; |
| 97 | case TX_STATUS_FAIL_BT_RETRY: |
| 98 | priv->_agn.reply_tx_stats.bt_retry++; |
| 99 | break; |
| 100 | case TX_STATUS_FAIL_STA_INVALID: |
| 101 | priv->_agn.reply_tx_stats.sta_invalid++; |
| 102 | break; |
| 103 | case TX_STATUS_FAIL_FRAG_DROPPED: |
| 104 | priv->_agn.reply_tx_stats.frag_drop++; |
| 105 | break; |
| 106 | case TX_STATUS_FAIL_TID_DISABLE: |
| 107 | priv->_agn.reply_tx_stats.tid_disable++; |
| 108 | break; |
| 109 | case TX_STATUS_FAIL_FIFO_FLUSHED: |
| 110 | priv->_agn.reply_tx_stats.fifo_flush++; |
| 111 | break; |
| 112 | case TX_STATUS_FAIL_INSUFFICIENT_CF_POLL: |
| 113 | priv->_agn.reply_tx_stats.insuff_cf_poll++; |
| 114 | break; |
Wey-Yi Guy | 1d27007 | 2010-09-07 12:42:20 -0700 | [diff] [blame] | 115 | case TX_STATUS_FAIL_PASSIVE_NO_RX: |
Wey-Yi Guy | 91835ba | 2010-09-05 10:49:41 -0700 | [diff] [blame] | 116 | priv->_agn.reply_tx_stats.fail_hw_drop++; |
| 117 | break; |
Wey-Yi Guy | 1d27007 | 2010-09-07 12:42:20 -0700 | [diff] [blame] | 118 | case TX_STATUS_FAIL_NO_BEACON_ON_RADAR: |
Wey-Yi Guy | 91835ba | 2010-09-05 10:49:41 -0700 | [diff] [blame] | 119 | priv->_agn.reply_tx_stats.sta_color_mismatch++; |
| 120 | break; |
| 121 | default: |
| 122 | priv->_agn.reply_tx_stats.unknown++; |
| 123 | break; |
| 124 | } |
| 125 | } |
| 126 | |
Wey-Yi Guy | 814665f | 2010-09-05 10:49:44 -0700 | [diff] [blame] | 127 | static void iwlagn_count_agg_tx_err_status(struct iwl_priv *priv, u16 status) |
| 128 | { |
| 129 | status &= AGG_TX_STATUS_MSK; |
| 130 | |
| 131 | switch (status) { |
| 132 | case AGG_TX_STATE_UNDERRUN_MSK: |
| 133 | priv->_agn.reply_agg_tx_stats.underrun++; |
| 134 | break; |
| 135 | case AGG_TX_STATE_BT_PRIO_MSK: |
| 136 | priv->_agn.reply_agg_tx_stats.bt_prio++; |
| 137 | break; |
| 138 | case AGG_TX_STATE_FEW_BYTES_MSK: |
| 139 | priv->_agn.reply_agg_tx_stats.few_bytes++; |
| 140 | break; |
| 141 | case AGG_TX_STATE_ABORT_MSK: |
| 142 | priv->_agn.reply_agg_tx_stats.abort++; |
| 143 | break; |
| 144 | case AGG_TX_STATE_LAST_SENT_TTL_MSK: |
| 145 | priv->_agn.reply_agg_tx_stats.last_sent_ttl++; |
| 146 | break; |
| 147 | case AGG_TX_STATE_LAST_SENT_TRY_CNT_MSK: |
| 148 | priv->_agn.reply_agg_tx_stats.last_sent_try++; |
| 149 | break; |
| 150 | case AGG_TX_STATE_LAST_SENT_BT_KILL_MSK: |
| 151 | priv->_agn.reply_agg_tx_stats.last_sent_bt_kill++; |
| 152 | break; |
| 153 | case AGG_TX_STATE_SCD_QUERY_MSK: |
| 154 | priv->_agn.reply_agg_tx_stats.scd_query++; |
| 155 | break; |
| 156 | case AGG_TX_STATE_TEST_BAD_CRC32_MSK: |
| 157 | priv->_agn.reply_agg_tx_stats.bad_crc32++; |
| 158 | break; |
| 159 | case AGG_TX_STATE_RESPONSE_MSK: |
| 160 | priv->_agn.reply_agg_tx_stats.response++; |
| 161 | break; |
| 162 | case AGG_TX_STATE_DUMP_TX_MSK: |
| 163 | priv->_agn.reply_agg_tx_stats.dump_tx++; |
| 164 | break; |
| 165 | case AGG_TX_STATE_DELAY_TX_MSK: |
| 166 | priv->_agn.reply_agg_tx_stats.delay_tx++; |
| 167 | break; |
| 168 | default: |
| 169 | priv->_agn.reply_agg_tx_stats.unknown++; |
| 170 | break; |
| 171 | } |
| 172 | } |
| 173 | |
Wey-Yi Guy | 743e015 | 2010-09-04 09:00:14 -0700 | [diff] [blame] | 174 | static void iwlagn_set_tx_status(struct iwl_priv *priv, |
| 175 | struct ieee80211_tx_info *info, |
Garen Tamrazian | 68b9931 | 2011-03-30 02:29:32 -0700 | [diff] [blame] | 176 | struct iwl_rxon_context *ctx, |
Wey-Yi Guy | 898dade | 2010-09-20 09:12:33 -0700 | [diff] [blame] | 177 | struct iwlagn_tx_resp *tx_resp, |
Wey-Yi Guy | 743e015 | 2010-09-04 09:00:14 -0700 | [diff] [blame] | 178 | int txq_id, bool is_agg) |
| 179 | { |
| 180 | u16 status = le16_to_cpu(tx_resp->status.status); |
| 181 | |
| 182 | info->status.rates[0].count = tx_resp->failure_frame + 1; |
| 183 | if (is_agg) |
| 184 | info->flags &= ~IEEE80211_TX_CTL_AMPDU; |
| 185 | info->flags |= iwl_tx_status_to_mac80211(status); |
| 186 | iwlagn_hwrate_to_tx_control(priv, le32_to_cpu(tx_resp->rate_n_flags), |
| 187 | info); |
Wey-Yi Guy | 91835ba | 2010-09-05 10:49:41 -0700 | [diff] [blame] | 188 | if (!iwl_is_tx_success(status)) |
| 189 | iwlagn_count_tx_err_status(priv, status); |
Wey-Yi Guy | 743e015 | 2010-09-04 09:00:14 -0700 | [diff] [blame] | 190 | |
Garen Tamrazian | 68b9931 | 2011-03-30 02:29:32 -0700 | [diff] [blame] | 191 | if (status == TX_STATUS_FAIL_PASSIVE_NO_RX && |
| 192 | iwl_is_associated_ctx(ctx) && ctx->vif && |
| 193 | ctx->vif->type == NL80211_IFTYPE_STATION) { |
| 194 | ctx->last_tx_rejected = true; |
| 195 | iwl_stop_queue(priv, &priv->txq[txq_id]); |
| 196 | } |
| 197 | |
Wey-Yi Guy | 743e015 | 2010-09-04 09:00:14 -0700 | [diff] [blame] | 198 | IWL_DEBUG_TX_REPLY(priv, "TXQ %d status %s (0x%08x) rate_n_flags " |
| 199 | "0x%x retries %d\n", |
| 200 | txq_id, |
| 201 | iwl_get_tx_fail_reason(status), status, |
| 202 | le32_to_cpu(tx_resp->rate_n_flags), |
| 203 | tx_resp->failure_frame); |
| 204 | } |
| 205 | |
Wey-Yi Guy | e1b3fa0 | 2010-09-05 10:49:43 -0700 | [diff] [blame] | 206 | #ifdef CONFIG_IWLWIFI_DEBUG |
| 207 | #define AGG_TX_STATE_FAIL(x) case AGG_TX_STATE_ ## x: return #x |
| 208 | |
| 209 | const char *iwl_get_agg_tx_fail_reason(u16 status) |
| 210 | { |
| 211 | status &= AGG_TX_STATUS_MSK; |
| 212 | switch (status) { |
| 213 | case AGG_TX_STATE_TRANSMITTED: |
| 214 | return "SUCCESS"; |
| 215 | AGG_TX_STATE_FAIL(UNDERRUN_MSK); |
| 216 | AGG_TX_STATE_FAIL(BT_PRIO_MSK); |
| 217 | AGG_TX_STATE_FAIL(FEW_BYTES_MSK); |
| 218 | AGG_TX_STATE_FAIL(ABORT_MSK); |
| 219 | AGG_TX_STATE_FAIL(LAST_SENT_TTL_MSK); |
| 220 | AGG_TX_STATE_FAIL(LAST_SENT_TRY_CNT_MSK); |
| 221 | AGG_TX_STATE_FAIL(LAST_SENT_BT_KILL_MSK); |
| 222 | AGG_TX_STATE_FAIL(SCD_QUERY_MSK); |
| 223 | AGG_TX_STATE_FAIL(TEST_BAD_CRC32_MSK); |
| 224 | AGG_TX_STATE_FAIL(RESPONSE_MSK); |
| 225 | AGG_TX_STATE_FAIL(DUMP_TX_MSK); |
| 226 | AGG_TX_STATE_FAIL(DELAY_TX_MSK); |
| 227 | } |
| 228 | |
| 229 | return "UNKNOWN"; |
| 230 | } |
| 231 | #endif /* CONFIG_IWLWIFI_DEBUG */ |
| 232 | |
Wey-Yi Guy | e04ed0a | 2010-03-16 17:47:58 -0700 | [diff] [blame] | 233 | static int iwlagn_tx_status_reply_tx(struct iwl_priv *priv, |
| 234 | struct iwl_ht_agg *agg, |
Wey-Yi Guy | 898dade | 2010-09-20 09:12:33 -0700 | [diff] [blame] | 235 | struct iwlagn_tx_resp *tx_resp, |
Wey-Yi Guy | e04ed0a | 2010-03-16 17:47:58 -0700 | [diff] [blame] | 236 | int txq_id, u16 start_idx) |
| 237 | { |
| 238 | u16 status; |
| 239 | struct agg_tx_status *frame_status = &tx_resp->status; |
Wey-Yi Guy | e04ed0a | 2010-03-16 17:47:58 -0700 | [diff] [blame] | 240 | struct ieee80211_hdr *hdr = NULL; |
Wey-Yi Guy | e04ed0a | 2010-03-16 17:47:58 -0700 | [diff] [blame] | 241 | int i, sh, idx; |
| 242 | u16 seq; |
| 243 | |
| 244 | if (agg->wait_for_ba) |
| 245 | IWL_DEBUG_TX_REPLY(priv, "got tx response w/o block-ack\n"); |
| 246 | |
| 247 | agg->frame_count = tx_resp->frame_count; |
| 248 | agg->start_idx = start_idx; |
Wey-Yi Guy | 743e015 | 2010-09-04 09:00:14 -0700 | [diff] [blame] | 249 | agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags); |
Wey-Yi Guy | e04ed0a | 2010-03-16 17:47:58 -0700 | [diff] [blame] | 250 | agg->bitmap = 0; |
| 251 | |
| 252 | /* # frames attempted by Tx command */ |
| 253 | if (agg->frame_count == 1) { |
Garen Tamrazian | 68b9931 | 2011-03-30 02:29:32 -0700 | [diff] [blame] | 254 | struct iwl_tx_info *txb; |
| 255 | |
Wey-Yi Guy | e04ed0a | 2010-03-16 17:47:58 -0700 | [diff] [blame] | 256 | /* Only one frame was attempted; no block-ack will arrive */ |
Wey-Yi Guy | e04ed0a | 2010-03-16 17:47:58 -0700 | [diff] [blame] | 257 | idx = start_idx; |
| 258 | |
Wey-Yi Guy | e04ed0a | 2010-03-16 17:47:58 -0700 | [diff] [blame] | 259 | IWL_DEBUG_TX_REPLY(priv, "FrameCnt = %d, StartIdx=%d idx=%d\n", |
| 260 | agg->frame_count, agg->start_idx, idx); |
Garen Tamrazian | 68b9931 | 2011-03-30 02:29:32 -0700 | [diff] [blame] | 261 | txb = &priv->txq[txq_id].txb[idx]; |
| 262 | iwlagn_set_tx_status(priv, IEEE80211_SKB_CB(txb->skb), |
| 263 | txb->ctx, tx_resp, txq_id, true); |
Wey-Yi Guy | e04ed0a | 2010-03-16 17:47:58 -0700 | [diff] [blame] | 264 | agg->wait_for_ba = 0; |
| 265 | } else { |
| 266 | /* Two or more frames were attempted; expect block-ack */ |
| 267 | u64 bitmap = 0; |
Daniel Halperin | f668da2 | 2010-05-25 10:22:49 -0700 | [diff] [blame] | 268 | |
| 269 | /* |
| 270 | * Start is the lowest frame sent. It may not be the first |
| 271 | * frame in the batch; we figure this out dynamically during |
| 272 | * the following loop. |
| 273 | */ |
Wey-Yi Guy | e04ed0a | 2010-03-16 17:47:58 -0700 | [diff] [blame] | 274 | int start = agg->start_idx; |
| 275 | |
| 276 | /* Construct bit-map of pending frames within Tx window */ |
| 277 | for (i = 0; i < agg->frame_count; i++) { |
| 278 | u16 sc; |
| 279 | status = le16_to_cpu(frame_status[i].status); |
| 280 | seq = le16_to_cpu(frame_status[i].sequence); |
| 281 | idx = SEQ_TO_INDEX(seq); |
| 282 | txq_id = SEQ_TO_QUEUE(seq); |
| 283 | |
Wey-Yi Guy | 814665f | 2010-09-05 10:49:44 -0700 | [diff] [blame] | 284 | if (status & AGG_TX_STATUS_MSK) |
| 285 | iwlagn_count_agg_tx_err_status(priv, status); |
| 286 | |
Wey-Yi Guy | e04ed0a | 2010-03-16 17:47:58 -0700 | [diff] [blame] | 287 | if (status & (AGG_TX_STATE_FEW_BYTES_MSK | |
| 288 | AGG_TX_STATE_ABORT_MSK)) |
| 289 | continue; |
| 290 | |
| 291 | IWL_DEBUG_TX_REPLY(priv, "FrameCnt = %d, txq_id=%d idx=%d\n", |
| 292 | agg->frame_count, txq_id, idx); |
Wey-Yi Guy | e1b3fa0 | 2010-09-05 10:49:43 -0700 | [diff] [blame] | 293 | IWL_DEBUG_TX_REPLY(priv, "status %s (0x%08x), " |
| 294 | "try-count (0x%08x)\n", |
| 295 | iwl_get_agg_tx_fail_reason(status), |
| 296 | status & AGG_TX_STATUS_MSK, |
| 297 | status & AGG_TX_TRY_MSK); |
Wey-Yi Guy | e04ed0a | 2010-03-16 17:47:58 -0700 | [diff] [blame] | 298 | |
| 299 | hdr = iwl_tx_queue_get_hdr(priv, txq_id, idx); |
| 300 | if (!hdr) { |
| 301 | IWL_ERR(priv, |
| 302 | "BUG_ON idx doesn't point to valid skb" |
| 303 | " idx=%d, txq_id=%d\n", idx, txq_id); |
| 304 | return -1; |
| 305 | } |
| 306 | |
| 307 | sc = le16_to_cpu(hdr->seq_ctrl); |
| 308 | if (idx != (SEQ_TO_SN(sc) & 0xff)) { |
| 309 | IWL_ERR(priv, |
| 310 | "BUG_ON idx doesn't match seq control" |
| 311 | " idx=%d, seq_idx=%d, seq=%d\n", |
| 312 | idx, SEQ_TO_SN(sc), |
| 313 | hdr->seq_ctrl); |
| 314 | return -1; |
| 315 | } |
| 316 | |
| 317 | IWL_DEBUG_TX_REPLY(priv, "AGG Frame i=%d idx %d seq=%d\n", |
| 318 | i, idx, SEQ_TO_SN(sc)); |
| 319 | |
Daniel Halperin | f668da2 | 2010-05-25 10:22:49 -0700 | [diff] [blame] | 320 | /* |
| 321 | * sh -> how many frames ahead of the starting frame is |
| 322 | * the current one? |
| 323 | * |
| 324 | * Note that all frames sent in the batch must be in a |
| 325 | * 64-frame window, so this number should be in [0,63]. |
| 326 | * If outside of this window, then we've found a new |
| 327 | * "first" frame in the batch and need to change start. |
| 328 | */ |
Wey-Yi Guy | e04ed0a | 2010-03-16 17:47:58 -0700 | [diff] [blame] | 329 | sh = idx - start; |
Daniel Halperin | f668da2 | 2010-05-25 10:22:49 -0700 | [diff] [blame] | 330 | |
| 331 | /* |
| 332 | * If >= 64, out of window. start must be at the front |
| 333 | * of the circular buffer, idx must be near the end of |
| 334 | * the buffer, and idx is the new "first" frame. Shift |
| 335 | * the indices around. |
| 336 | */ |
| 337 | if (sh >= 64) { |
| 338 | /* Shift bitmap by start - idx, wrapped */ |
| 339 | sh = 0x100 - idx + start; |
Wey-Yi Guy | e04ed0a | 2010-03-16 17:47:58 -0700 | [diff] [blame] | 340 | bitmap = bitmap << sh; |
Daniel Halperin | f668da2 | 2010-05-25 10:22:49 -0700 | [diff] [blame] | 341 | /* Now idx is the new start so sh = 0 */ |
Wey-Yi Guy | e04ed0a | 2010-03-16 17:47:58 -0700 | [diff] [blame] | 342 | sh = 0; |
| 343 | start = idx; |
Daniel Halperin | f668da2 | 2010-05-25 10:22:49 -0700 | [diff] [blame] | 344 | /* |
| 345 | * If <= -64 then wraps the 256-pkt circular buffer |
| 346 | * (e.g., start = 255 and idx = 0, sh should be 1) |
| 347 | */ |
| 348 | } else if (sh <= -64) { |
| 349 | sh = 0x100 - start + idx; |
| 350 | /* |
| 351 | * If < 0 but > -64, out of window. idx is before start |
| 352 | * but not wrapped. Shift the indices around. |
| 353 | */ |
| 354 | } else if (sh < 0) { |
| 355 | /* Shift by how far start is ahead of idx */ |
Wey-Yi Guy | e04ed0a | 2010-03-16 17:47:58 -0700 | [diff] [blame] | 356 | sh = start - idx; |
Wey-Yi Guy | e04ed0a | 2010-03-16 17:47:58 -0700 | [diff] [blame] | 357 | bitmap = bitmap << sh; |
Daniel Halperin | f668da2 | 2010-05-25 10:22:49 -0700 | [diff] [blame] | 358 | /* Now idx is the new start so sh = 0 */ |
| 359 | start = idx; |
Wey-Yi Guy | e04ed0a | 2010-03-16 17:47:58 -0700 | [diff] [blame] | 360 | sh = 0; |
| 361 | } |
Daniel Halperin | f668da2 | 2010-05-25 10:22:49 -0700 | [diff] [blame] | 362 | /* Sequence number start + sh was sent in this batch */ |
Wey-Yi Guy | e04ed0a | 2010-03-16 17:47:58 -0700 | [diff] [blame] | 363 | bitmap |= 1ULL << sh; |
| 364 | IWL_DEBUG_TX_REPLY(priv, "start=%d bitmap=0x%llx\n", |
| 365 | start, (unsigned long long)bitmap); |
| 366 | } |
| 367 | |
Daniel Halperin | f668da2 | 2010-05-25 10:22:49 -0700 | [diff] [blame] | 368 | /* |
| 369 | * Store the bitmap and possibly the new start, if we wrapped |
| 370 | * the buffer above |
| 371 | */ |
Wey-Yi Guy | e04ed0a | 2010-03-16 17:47:58 -0700 | [diff] [blame] | 372 | agg->bitmap = bitmap; |
| 373 | agg->start_idx = start; |
| 374 | IWL_DEBUG_TX_REPLY(priv, "Frames %d start_idx=%d bitmap=0x%llx\n", |
| 375 | agg->frame_count, agg->start_idx, |
| 376 | (unsigned long long)agg->bitmap); |
| 377 | |
| 378 | if (bitmap) |
| 379 | agg->wait_for_ba = 1; |
| 380 | } |
| 381 | return 0; |
| 382 | } |
| 383 | |
Wey-Yi Guy | 04569cb | 2010-03-31 17:57:28 -0700 | [diff] [blame] | 384 | void iwl_check_abort_status(struct iwl_priv *priv, |
| 385 | u8 frame_count, u32 status) |
| 386 | { |
| 387 | if (frame_count == 1 && status == TX_STATUS_FAIL_RFKILL_FLUSH) { |
Wey-Yi Guy | 6555063 | 2010-06-24 13:18:35 -0700 | [diff] [blame] | 388 | IWL_ERR(priv, "Tx flush command to flush out all frames\n"); |
| 389 | if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) |
| 390 | queue_work(priv->workqueue, &priv->tx_flush); |
Wey-Yi Guy | 04569cb | 2010-03-31 17:57:28 -0700 | [diff] [blame] | 391 | } |
| 392 | } |
| 393 | |
Wey-Yi Guy | e04ed0a | 2010-03-16 17:47:58 -0700 | [diff] [blame] | 394 | static void iwlagn_rx_reply_tx(struct iwl_priv *priv, |
| 395 | struct iwl_rx_mem_buffer *rxb) |
| 396 | { |
| 397 | struct iwl_rx_packet *pkt = rxb_addr(rxb); |
| 398 | u16 sequence = le16_to_cpu(pkt->hdr.sequence); |
| 399 | int txq_id = SEQ_TO_QUEUE(sequence); |
| 400 | int index = SEQ_TO_INDEX(sequence); |
| 401 | struct iwl_tx_queue *txq = &priv->txq[txq_id]; |
| 402 | struct ieee80211_tx_info *info; |
Wey-Yi Guy | 898dade | 2010-09-20 09:12:33 -0700 | [diff] [blame] | 403 | struct iwlagn_tx_resp *tx_resp = (void *)&pkt->u.raw[0]; |
Garen Tamrazian | 68b9931 | 2011-03-30 02:29:32 -0700 | [diff] [blame] | 404 | struct iwl_tx_info *txb; |
| 405 | u32 status = le16_to_cpu(tx_resp->status.status); |
Wey-Yi Guy | e04ed0a | 2010-03-16 17:47:58 -0700 | [diff] [blame] | 406 | int tid; |
| 407 | int sta_id; |
| 408 | int freed; |
Reinette Chatre | 9c5ac09 | 2010-05-05 02:26:06 -0700 | [diff] [blame] | 409 | unsigned long flags; |
Wey-Yi Guy | e04ed0a | 2010-03-16 17:47:58 -0700 | [diff] [blame] | 410 | |
| 411 | if ((index >= txq->q.n_bd) || (iwl_queue_used(&txq->q, index) == 0)) { |
Daniel Halperin | 2e5d04d | 2011-05-27 08:40:28 -0700 | [diff] [blame] | 412 | IWL_ERR(priv, "%s: Read index for DMA queue txq_id (%d) " |
| 413 | "index %d is out of range [0-%d] %d %d\n", __func__, |
| 414 | txq_id, index, txq->q.n_bd, txq->q.write_ptr, |
Wey-Yi Guy | e04ed0a | 2010-03-16 17:47:58 -0700 | [diff] [blame] | 415 | txq->q.read_ptr); |
| 416 | return; |
| 417 | } |
| 418 | |
Stanislaw Gruszka | 22de94d | 2010-12-03 15:41:48 +0100 | [diff] [blame] | 419 | txq->time_stamp = jiffies; |
Garen Tamrazian | 68b9931 | 2011-03-30 02:29:32 -0700 | [diff] [blame] | 420 | txb = &txq->txb[txq->q.read_ptr]; |
| 421 | info = IEEE80211_SKB_CB(txb->skb); |
Wey-Yi Guy | e04ed0a | 2010-03-16 17:47:58 -0700 | [diff] [blame] | 422 | memset(&info->status, 0, sizeof(info->status)); |
| 423 | |
Wey-Yi Guy | 898dade | 2010-09-20 09:12:33 -0700 | [diff] [blame] | 424 | tid = (tx_resp->ra_tid & IWLAGN_TX_RES_TID_MSK) >> |
| 425 | IWLAGN_TX_RES_TID_POS; |
| 426 | sta_id = (tx_resp->ra_tid & IWLAGN_TX_RES_RA_MSK) >> |
| 427 | IWLAGN_TX_RES_RA_POS; |
Wey-Yi Guy | e04ed0a | 2010-03-16 17:47:58 -0700 | [diff] [blame] | 428 | |
Reinette Chatre | 9c5ac09 | 2010-05-05 02:26:06 -0700 | [diff] [blame] | 429 | spin_lock_irqsave(&priv->sta_lock, flags); |
Wey-Yi Guy | e04ed0a | 2010-03-16 17:47:58 -0700 | [diff] [blame] | 430 | if (txq->sched_retry) { |
| 431 | const u32 scd_ssn = iwlagn_get_scd_ssn(tx_resp); |
Reinette Chatre | 9c5ac09 | 2010-05-05 02:26:06 -0700 | [diff] [blame] | 432 | struct iwl_ht_agg *agg; |
Wey-Yi Guy | e04ed0a | 2010-03-16 17:47:58 -0700 | [diff] [blame] | 433 | |
| 434 | agg = &priv->stations[sta_id].tid[tid].agg; |
Wey-Yi Guy | c6c996b | 2010-08-23 07:57:06 -0700 | [diff] [blame] | 435 | /* |
| 436 | * If the BT kill count is non-zero, we'll get this |
| 437 | * notification again. |
| 438 | */ |
| 439 | if (tx_resp->bt_kill_count && tx_resp->frame_count == 1 && |
Wey-Yi Guy | 7cb1b08 | 2010-10-06 08:10:00 -0700 | [diff] [blame] | 440 | priv->cfg->bt_params && |
| 441 | priv->cfg->bt_params->advanced_bt_coexist) { |
Wey-Yi Guy | fa7f141 | 2011-06-06 12:49:25 -0700 | [diff] [blame] | 442 | IWL_DEBUG_COEX(priv, "receive reply tx with bt_kill\n"); |
Wey-Yi Guy | c6c996b | 2010-08-23 07:57:06 -0700 | [diff] [blame] | 443 | } |
Wey-Yi Guy | e04ed0a | 2010-03-16 17:47:58 -0700 | [diff] [blame] | 444 | iwlagn_tx_status_reply_tx(priv, agg, tx_resp, txq_id, index); |
| 445 | |
| 446 | /* check if BAR is needed */ |
| 447 | if ((tx_resp->frame_count == 1) && !iwl_is_tx_success(status)) |
| 448 | info->flags |= IEEE80211_TX_STAT_AMPDU_NO_BACK; |
| 449 | |
| 450 | if (txq->q.read_ptr != (scd_ssn & 0xff)) { |
| 451 | index = iwl_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd); |
| 452 | IWL_DEBUG_TX_REPLY(priv, "Retry scheduler reclaim " |
| 453 | "scd_ssn=%d idx=%d txq=%d swq=%d\n", |
| 454 | scd_ssn , index, txq_id, txq->swq_id); |
| 455 | |
Wey-Yi Guy | 74bcdb3 | 2010-03-17 13:34:34 -0700 | [diff] [blame] | 456 | freed = iwlagn_tx_queue_reclaim(priv, txq_id, index); |
Wey-Yi Guy | e04ed0a | 2010-03-16 17:47:58 -0700 | [diff] [blame] | 457 | iwl_free_tfds_in_queue(priv, sta_id, tid, freed); |
| 458 | |
| 459 | if (priv->mac80211_registered && |
| 460 | (iwl_queue_space(&txq->q) > txq->q.low_mark) && |
Johannes Berg | 4bea9b9 | 2010-11-10 18:25:43 -0800 | [diff] [blame] | 461 | (agg->state != IWL_EMPTYING_HW_QUEUE_DELBA)) |
Johannes Berg | 549a04e | 2010-11-10 18:25:44 -0800 | [diff] [blame] | 462 | iwl_wake_queue(priv, txq); |
Wey-Yi Guy | e04ed0a | 2010-03-16 17:47:58 -0700 | [diff] [blame] | 463 | } |
| 464 | } else { |
Garen Tamrazian | 68b9931 | 2011-03-30 02:29:32 -0700 | [diff] [blame] | 465 | iwlagn_set_tx_status(priv, info, txb->ctx, tx_resp, |
| 466 | txq_id, false); |
Wey-Yi Guy | 74bcdb3 | 2010-03-17 13:34:34 -0700 | [diff] [blame] | 467 | freed = iwlagn_tx_queue_reclaim(priv, txq_id, index); |
Wey-Yi Guy | e04ed0a | 2010-03-16 17:47:58 -0700 | [diff] [blame] | 468 | iwl_free_tfds_in_queue(priv, sta_id, tid, freed); |
| 469 | |
| 470 | if (priv->mac80211_registered && |
Garen Tamrazian | 68b9931 | 2011-03-30 02:29:32 -0700 | [diff] [blame] | 471 | iwl_queue_space(&txq->q) > txq->q.low_mark && |
| 472 | status != TX_STATUS_FAIL_PASSIVE_NO_RX) |
Johannes Berg | 549a04e | 2010-11-10 18:25:44 -0800 | [diff] [blame] | 473 | iwl_wake_queue(priv, txq); |
Wey-Yi Guy | e04ed0a | 2010-03-16 17:47:58 -0700 | [diff] [blame] | 474 | } |
| 475 | |
Wey-Yi Guy | 74bcdb3 | 2010-03-17 13:34:34 -0700 | [diff] [blame] | 476 | iwlagn_txq_check_empty(priv, sta_id, tid, txq_id); |
Wey-Yi Guy | e04ed0a | 2010-03-16 17:47:58 -0700 | [diff] [blame] | 477 | |
Wey-Yi Guy | 04569cb | 2010-03-31 17:57:28 -0700 | [diff] [blame] | 478 | iwl_check_abort_status(priv, tx_resp->frame_count, status); |
Reinette Chatre | 9c5ac09 | 2010-05-05 02:26:06 -0700 | [diff] [blame] | 479 | spin_unlock_irqrestore(&priv->sta_lock, flags); |
Wey-Yi Guy | e04ed0a | 2010-03-16 17:47:58 -0700 | [diff] [blame] | 480 | } |
| 481 | |
| 482 | void iwlagn_rx_handler_setup(struct iwl_priv *priv) |
| 483 | { |
| 484 | /* init calibration handlers */ |
| 485 | priv->rx_handlers[CALIBRATION_RES_NOTIFICATION] = |
| 486 | iwlagn_rx_calib_result; |
Wey-Yi Guy | e04ed0a | 2010-03-16 17:47:58 -0700 | [diff] [blame] | 487 | priv->rx_handlers[REPLY_TX] = iwlagn_rx_reply_tx; |
Johannes Berg | 7194207c | 2011-01-04 16:22:00 -0800 | [diff] [blame] | 488 | |
| 489 | /* set up notification wait support */ |
| 490 | spin_lock_init(&priv->_agn.notif_wait_lock); |
| 491 | INIT_LIST_HEAD(&priv->_agn.notif_waits); |
| 492 | init_waitqueue_head(&priv->_agn.notif_waitq); |
Wey-Yi Guy | e04ed0a | 2010-03-16 17:47:58 -0700 | [diff] [blame] | 493 | } |
| 494 | |
| 495 | void iwlagn_setup_deferred_work(struct iwl_priv *priv) |
| 496 | { |
Wey-Yi Guy | ae89726 | 2011-04-01 16:29:54 -0700 | [diff] [blame] | 497 | /* |
| 498 | * nothing need to be done here anymore |
| 499 | * still keep for future use if needed |
| 500 | */ |
Wey-Yi Guy | e04ed0a | 2010-03-16 17:47:58 -0700 | [diff] [blame] | 501 | } |
| 502 | |
| 503 | int iwlagn_hw_valid_rtc_data_addr(u32 addr) |
| 504 | { |
| 505 | return (addr >= IWLAGN_RTC_DATA_LOWER_BOUND) && |
| 506 | (addr < IWLAGN_RTC_DATA_UPPER_BOUND); |
| 507 | } |
| 508 | |
| 509 | int iwlagn_send_tx_power(struct iwl_priv *priv) |
| 510 | { |
Wey-Yi Guy | ab63c68 | 2010-09-20 09:12:31 -0700 | [diff] [blame] | 511 | struct iwlagn_tx_power_dbm_cmd tx_power_cmd; |
Wey-Yi Guy | e04ed0a | 2010-03-16 17:47:58 -0700 | [diff] [blame] | 512 | u8 tx_ant_cfg_cmd; |
| 513 | |
Stanislaw Gruszka | 4beeba7 | 2010-10-25 10:34:50 +0200 | [diff] [blame] | 514 | if (WARN_ONCE(test_bit(STATUS_SCAN_HW, &priv->status), |
| 515 | "TX Power requested while scanning!\n")) |
| 516 | return -EAGAIN; |
| 517 | |
Wey-Yi Guy | e04ed0a | 2010-03-16 17:47:58 -0700 | [diff] [blame] | 518 | /* half dBm need to multiply */ |
| 519 | tx_power_cmd.global_lmt = (s8)(2 * priv->tx_power_user_lmt); |
| 520 | |
| 521 | if (priv->tx_power_lmt_in_half_dbm && |
| 522 | priv->tx_power_lmt_in_half_dbm < tx_power_cmd.global_lmt) { |
| 523 | /* |
| 524 | * For the newer devices which using enhanced/extend tx power |
| 525 | * table in EEPROM, the format is in half dBm. driver need to |
| 526 | * convert to dBm format before report to mac80211. |
| 527 | * By doing so, there is a possibility of 1/2 dBm resolution |
| 528 | * lost. driver will perform "round-up" operation before |
| 529 | * reporting, but it will cause 1/2 dBm tx power over the |
| 530 | * regulatory limit. Perform the checking here, if the |
| 531 | * "tx_power_user_lmt" is higher than EEPROM value (in |
| 532 | * half-dBm format), lower the tx power based on EEPROM |
| 533 | */ |
| 534 | tx_power_cmd.global_lmt = priv->tx_power_lmt_in_half_dbm; |
| 535 | } |
Wey-Yi Guy | ab63c68 | 2010-09-20 09:12:31 -0700 | [diff] [blame] | 536 | tx_power_cmd.flags = IWLAGN_TX_POWER_NO_CLOSED; |
| 537 | tx_power_cmd.srv_chan_lmt = IWLAGN_TX_POWER_AUTO; |
Wey-Yi Guy | e04ed0a | 2010-03-16 17:47:58 -0700 | [diff] [blame] | 538 | |
| 539 | if (IWL_UCODE_API(priv->ucode_ver) == 1) |
| 540 | tx_ant_cfg_cmd = REPLY_TX_POWER_DBM_CMD_V1; |
| 541 | else |
| 542 | tx_ant_cfg_cmd = REPLY_TX_POWER_DBM_CMD; |
| 543 | |
Emmanuel Grumbach | bdfbf09 | 2011-07-08 08:46:16 -0700 | [diff] [blame] | 544 | return trans_send_cmd_pdu(priv, tx_ant_cfg_cmd, CMD_SYNC, |
Emmanuel Grumbach | e419d62 | 2011-07-08 08:46:14 -0700 | [diff] [blame] | 545 | sizeof(tx_power_cmd), &tx_power_cmd); |
Wey-Yi Guy | e04ed0a | 2010-03-16 17:47:58 -0700 | [diff] [blame] | 546 | } |
| 547 | |
| 548 | void iwlagn_temperature(struct iwl_priv *priv) |
| 549 | { |
Fry, Donald H | f8f79a5 | 2011-02-25 09:44:48 -0800 | [diff] [blame] | 550 | /* store temperature from correct statistics (in Celsius) */ |
Johannes Berg | 0da0e5b | 2011-04-08 08:14:56 -0700 | [diff] [blame] | 551 | priv->temperature = le32_to_cpu(priv->statistics.common.temperature); |
Wey-Yi Guy | e04ed0a | 2010-03-16 17:47:58 -0700 | [diff] [blame] | 552 | iwl_tt_handler(priv); |
| 553 | } |
| 554 | |
| 555 | u16 iwlagn_eeprom_calib_version(struct iwl_priv *priv) |
| 556 | { |
| 557 | struct iwl_eeprom_calib_hdr { |
| 558 | u8 version; |
| 559 | u8 pa_type; |
| 560 | u16 voltage; |
| 561 | } *hdr; |
| 562 | |
| 563 | hdr = (struct iwl_eeprom_calib_hdr *)iwl_eeprom_query_addr(priv, |
Wey-Yi Guy | 7944f8e | 2010-04-06 21:10:33 -0700 | [diff] [blame] | 564 | EEPROM_CALIB_ALL); |
Wey-Yi Guy | e04ed0a | 2010-03-16 17:47:58 -0700 | [diff] [blame] | 565 | return hdr->version; |
| 566 | |
| 567 | } |
| 568 | |
| 569 | /* |
| 570 | * EEPROM |
| 571 | */ |
| 572 | static u32 eeprom_indirect_address(const struct iwl_priv *priv, u32 address) |
| 573 | { |
| 574 | u16 offset = 0; |
| 575 | |
| 576 | if ((address & INDIRECT_ADDRESS) == 0) |
| 577 | return address; |
| 578 | |
| 579 | switch (address & INDIRECT_TYPE_MSK) { |
| 580 | case INDIRECT_HOST: |
Wey-Yi Guy | 7944f8e | 2010-04-06 21:10:33 -0700 | [diff] [blame] | 581 | offset = iwl_eeprom_query16(priv, EEPROM_LINK_HOST); |
Wey-Yi Guy | e04ed0a | 2010-03-16 17:47:58 -0700 | [diff] [blame] | 582 | break; |
| 583 | case INDIRECT_GENERAL: |
Wey-Yi Guy | 7944f8e | 2010-04-06 21:10:33 -0700 | [diff] [blame] | 584 | offset = iwl_eeprom_query16(priv, EEPROM_LINK_GENERAL); |
Wey-Yi Guy | e04ed0a | 2010-03-16 17:47:58 -0700 | [diff] [blame] | 585 | break; |
| 586 | case INDIRECT_REGULATORY: |
Wey-Yi Guy | 7944f8e | 2010-04-06 21:10:33 -0700 | [diff] [blame] | 587 | offset = iwl_eeprom_query16(priv, EEPROM_LINK_REGULATORY); |
Wey-Yi Guy | e04ed0a | 2010-03-16 17:47:58 -0700 | [diff] [blame] | 588 | break; |
Johannes Berg | 8d6748c | 2010-12-09 09:30:14 -0800 | [diff] [blame] | 589 | case INDIRECT_TXP_LIMIT: |
| 590 | offset = iwl_eeprom_query16(priv, EEPROM_LINK_TXP_LIMIT); |
| 591 | break; |
| 592 | case INDIRECT_TXP_LIMIT_SIZE: |
| 593 | offset = iwl_eeprom_query16(priv, EEPROM_LINK_TXP_LIMIT_SIZE); |
| 594 | break; |
Wey-Yi Guy | e04ed0a | 2010-03-16 17:47:58 -0700 | [diff] [blame] | 595 | case INDIRECT_CALIBRATION: |
Wey-Yi Guy | 7944f8e | 2010-04-06 21:10:33 -0700 | [diff] [blame] | 596 | offset = iwl_eeprom_query16(priv, EEPROM_LINK_CALIBRATION); |
Wey-Yi Guy | e04ed0a | 2010-03-16 17:47:58 -0700 | [diff] [blame] | 597 | break; |
| 598 | case INDIRECT_PROCESS_ADJST: |
Wey-Yi Guy | 7944f8e | 2010-04-06 21:10:33 -0700 | [diff] [blame] | 599 | offset = iwl_eeprom_query16(priv, EEPROM_LINK_PROCESS_ADJST); |
Wey-Yi Guy | e04ed0a | 2010-03-16 17:47:58 -0700 | [diff] [blame] | 600 | break; |
| 601 | case INDIRECT_OTHERS: |
Wey-Yi Guy | 7944f8e | 2010-04-06 21:10:33 -0700 | [diff] [blame] | 602 | offset = iwl_eeprom_query16(priv, EEPROM_LINK_OTHERS); |
Wey-Yi Guy | e04ed0a | 2010-03-16 17:47:58 -0700 | [diff] [blame] | 603 | break; |
| 604 | default: |
| 605 | IWL_ERR(priv, "illegal indirect type: 0x%X\n", |
| 606 | address & INDIRECT_TYPE_MSK); |
| 607 | break; |
| 608 | } |
| 609 | |
| 610 | /* translate the offset from words to byte */ |
| 611 | return (address & ADDRESS_MSK) + (offset << 1); |
| 612 | } |
| 613 | |
| 614 | const u8 *iwlagn_eeprom_query_addr(const struct iwl_priv *priv, |
| 615 | size_t offset) |
| 616 | { |
| 617 | u32 address = eeprom_indirect_address(priv, offset); |
Wey-Yi Guy | 7cb1b08 | 2010-10-06 08:10:00 -0700 | [diff] [blame] | 618 | BUG_ON(address >= priv->cfg->base_params->eeprom_size); |
Wey-Yi Guy | e04ed0a | 2010-03-16 17:47:58 -0700 | [diff] [blame] | 619 | return &priv->eeprom[address]; |
| 620 | } |
Wey-Yi Guy | 348ee7cd | 2010-03-16 12:37:27 -0700 | [diff] [blame] | 621 | |
| 622 | struct iwl_mod_params iwlagn_mod_params = { |
| 623 | .amsdu_size_8K = 1, |
| 624 | .restart_fw = 1, |
Stanislaw Gruszka | b7977ff | 2011-02-28 14:33:15 +0100 | [diff] [blame] | 625 | .plcp_check = true, |
Wey-Yi Guy | b60eec9 | 2011-06-03 13:52:38 -0700 | [diff] [blame] | 626 | .bt_coex_active = true, |
Wey-Yi Guy | 3f1e5f4 | 2011-06-03 13:52:40 -0700 | [diff] [blame] | 627 | .no_sleep_autoadjust = true, |
Wey-Yi Guy | f753816 | 2011-06-11 10:00:06 -0700 | [diff] [blame] | 628 | .power_level = IWL_POWER_INDEX_1, |
Wey-Yi Guy | 348ee7cd | 2010-03-16 12:37:27 -0700 | [diff] [blame] | 629 | /* the rest are 0 by default */ |
| 630 | }; |
Wey-Yi Guy | 74bcdb3 | 2010-03-17 13:34:34 -0700 | [diff] [blame] | 631 | |
Wey-Yi Guy | 74bcdb3 | 2010-03-17 13:34:34 -0700 | [diff] [blame] | 632 | int iwlagn_rx_init(struct iwl_priv *priv, struct iwl_rx_queue *rxq) |
| 633 | { |
| 634 | u32 rb_size; |
| 635 | const u32 rfdnlog = RX_QUEUE_SIZE_LOG; /* 256 RBDs */ |
| 636 | u32 rb_timeout = 0; /* FIXME: RX_RB_TIMEOUT for all devices? */ |
| 637 | |
Wey-Yi Guy | d6b8061 | 2011-03-21 16:53:38 -0700 | [diff] [blame] | 638 | rb_timeout = RX_RB_TIMEOUT; |
Wey-Yi Guy | 74bcdb3 | 2010-03-17 13:34:34 -0700 | [diff] [blame] | 639 | |
Don Fry | 9d143e9 | 2011-04-20 15:23:57 -0700 | [diff] [blame] | 640 | if (iwlagn_mod_params.amsdu_size_8K) |
Wey-Yi Guy | 74bcdb3 | 2010-03-17 13:34:34 -0700 | [diff] [blame] | 641 | rb_size = FH_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_8K; |
| 642 | else |
| 643 | rb_size = FH_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_4K; |
| 644 | |
| 645 | /* Stop Rx DMA */ |
| 646 | iwl_write_direct32(priv, FH_MEM_RCSR_CHNL0_CONFIG_REG, 0); |
| 647 | |
| 648 | /* Reset driver's Rx queue write index */ |
| 649 | iwl_write_direct32(priv, FH_RSCSR_CHNL0_RBDCB_WPTR_REG, 0); |
| 650 | |
| 651 | /* Tell device where to find RBD circular buffer in DRAM */ |
| 652 | iwl_write_direct32(priv, FH_RSCSR_CHNL0_RBDCB_BASE_REG, |
Emmanuel Grumbach | d5b25c9 | 2010-06-07 13:21:46 -0700 | [diff] [blame] | 653 | (u32)(rxq->bd_dma >> 8)); |
Wey-Yi Guy | 74bcdb3 | 2010-03-17 13:34:34 -0700 | [diff] [blame] | 654 | |
| 655 | /* Tell device where in DRAM to update its Rx status */ |
| 656 | iwl_write_direct32(priv, FH_RSCSR_CHNL0_STTS_WPTR_REG, |
| 657 | rxq->rb_stts_dma >> 4); |
| 658 | |
| 659 | /* Enable Rx DMA |
| 660 | * FH_RCSR_CHNL0_RX_IGNORE_RXF_EMPTY is set because of HW bug in |
| 661 | * the credit mechanism in 5000 HW RX FIFO |
| 662 | * Direct rx interrupts to hosts |
| 663 | * Rx buffer size 4 or 8k |
| 664 | * RB timeout 0x10 |
| 665 | * 256 RBDs |
| 666 | */ |
| 667 | iwl_write_direct32(priv, FH_MEM_RCSR_CHNL0_CONFIG_REG, |
| 668 | FH_RCSR_RX_CONFIG_CHNL_EN_ENABLE_VAL | |
| 669 | FH_RCSR_CHNL0_RX_IGNORE_RXF_EMPTY | |
| 670 | FH_RCSR_CHNL0_RX_CONFIG_IRQ_DEST_INT_HOST_VAL | |
| 671 | FH_RCSR_CHNL0_RX_CONFIG_SINGLE_FRAME_MSK | |
| 672 | rb_size| |
| 673 | (rb_timeout << FH_RCSR_RX_CONFIG_REG_IRQ_RBTH_POS)| |
| 674 | (rfdnlog << FH_RCSR_RX_CONFIG_RBDCB_SIZE_POS)); |
| 675 | |
| 676 | /* Set interrupt coalescing timer to default (2048 usecs) */ |
| 677 | iwl_write8(priv, CSR_INT_COALESCING, IWL_HOST_INT_TIMEOUT_DEF); |
| 678 | |
| 679 | return 0; |
| 680 | } |
| 681 | |
Johannes Berg | 9597eba | 2010-09-22 18:02:09 +0200 | [diff] [blame] | 682 | static void iwlagn_set_pwr_vmain(struct iwl_priv *priv) |
| 683 | { |
| 684 | /* |
| 685 | * (for documentation purposes) |
| 686 | * to set power to V_AUX, do: |
| 687 | |
| 688 | if (pci_pme_capable(priv->pci_dev, PCI_D3cold)) |
| 689 | iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG, |
| 690 | APMG_PS_CTRL_VAL_PWR_SRC_VAUX, |
| 691 | ~APMG_PS_CTRL_MSK_PWR_SRC); |
| 692 | */ |
| 693 | |
| 694 | iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG, |
| 695 | APMG_PS_CTRL_VAL_PWR_SRC_VMAIN, |
| 696 | ~APMG_PS_CTRL_MSK_PWR_SRC); |
| 697 | } |
| 698 | |
Wey-Yi Guy | 74bcdb3 | 2010-03-17 13:34:34 -0700 | [diff] [blame] | 699 | int iwlagn_hw_nic_init(struct iwl_priv *priv) |
| 700 | { |
| 701 | unsigned long flags; |
| 702 | struct iwl_rx_queue *rxq = &priv->rxq; |
Wey-Yi Guy | 74bcdb3 | 2010-03-17 13:34:34 -0700 | [diff] [blame] | 703 | |
| 704 | /* nic_init */ |
| 705 | spin_lock_irqsave(&priv->lock, flags); |
| 706 | priv->cfg->ops->lib->apm_ops.init(priv); |
| 707 | |
| 708 | /* Set interrupt coalescing calibration timer to default (512 usecs) */ |
| 709 | iwl_write8(priv, CSR_INT_COALESCING, IWL_HOST_INT_CALIB_TIMEOUT_DEF); |
| 710 | |
| 711 | spin_unlock_irqrestore(&priv->lock, flags); |
| 712 | |
Johannes Berg | 9597eba | 2010-09-22 18:02:09 +0200 | [diff] [blame] | 713 | iwlagn_set_pwr_vmain(priv); |
Wey-Yi Guy | 74bcdb3 | 2010-03-17 13:34:34 -0700 | [diff] [blame] | 714 | |
| 715 | priv->cfg->ops->lib->apm_ops.config(priv); |
| 716 | |
| 717 | /* Allocate the RX queue, or reset if it is already allocated */ |
Emmanuel Grumbach | bdfbf09 | 2011-07-08 08:46:16 -0700 | [diff] [blame] | 718 | trans_rx_init(priv); |
Wey-Yi Guy | 74bcdb3 | 2010-03-17 13:34:34 -0700 | [diff] [blame] | 719 | |
Wey-Yi Guy | 54b8155 | 2010-03-17 13:34:35 -0700 | [diff] [blame] | 720 | iwlagn_rx_replenish(priv); |
Wey-Yi Guy | 74bcdb3 | 2010-03-17 13:34:34 -0700 | [diff] [blame] | 721 | |
| 722 | iwlagn_rx_init(priv, rxq); |
| 723 | |
| 724 | spin_lock_irqsave(&priv->lock, flags); |
| 725 | |
| 726 | rxq->need_update = 1; |
| 727 | iwl_rx_queue_update_write_ptr(priv, rxq); |
| 728 | |
| 729 | spin_unlock_irqrestore(&priv->lock, flags); |
| 730 | |
Zhu Yi | 470058e0 | 2010-04-02 13:38:54 -0700 | [diff] [blame] | 731 | /* Allocate or reset and init all Tx and Command queues */ |
Emmanuel Grumbach | bdfbf09 | 2011-07-08 08:46:16 -0700 | [diff] [blame] | 732 | if (trans_tx_init(priv)) |
Emmanuel Grumbach | 02aca58 | 2011-06-28 08:58:41 -0700 | [diff] [blame] | 733 | return -ENOMEM; |
Wey-Yi Guy | 74bcdb3 | 2010-03-17 13:34:34 -0700 | [diff] [blame] | 734 | |
Wey-Yi Guy | f81c1f4 | 2010-11-10 09:56:50 -0800 | [diff] [blame] | 735 | if (priv->cfg->base_params->shadow_reg_enable) { |
| 736 | /* enable shadow regs in HW */ |
| 737 | iwl_set_bit(priv, CSR_MAC_SHADOW_REG_CTRL, |
| 738 | 0x800FFFFF); |
| 739 | } |
| 740 | |
Wey-Yi Guy | 74bcdb3 | 2010-03-17 13:34:34 -0700 | [diff] [blame] | 741 | set_bit(STATUS_INIT, &priv->status); |
| 742 | |
| 743 | return 0; |
| 744 | } |
Wey-Yi Guy | 54b8155 | 2010-03-17 13:34:35 -0700 | [diff] [blame] | 745 | |
| 746 | /** |
| 747 | * iwlagn_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr |
| 748 | */ |
| 749 | static inline __le32 iwlagn_dma_addr2rbd_ptr(struct iwl_priv *priv, |
| 750 | dma_addr_t dma_addr) |
| 751 | { |
| 752 | return cpu_to_le32((u32)(dma_addr >> 8)); |
| 753 | } |
| 754 | |
| 755 | /** |
| 756 | * iwlagn_rx_queue_restock - refill RX queue from pre-allocated pool |
| 757 | * |
| 758 | * If there are slots in the RX queue that need to be restocked, |
| 759 | * and we have free pre-allocated buffers, fill the ranks as much |
| 760 | * as we can, pulling from rx_free. |
| 761 | * |
| 762 | * This moves the 'write' index forward to catch up with 'processed', and |
| 763 | * also updates the memory address in the firmware to reference the new |
| 764 | * target buffer. |
| 765 | */ |
| 766 | void iwlagn_rx_queue_restock(struct iwl_priv *priv) |
| 767 | { |
| 768 | struct iwl_rx_queue *rxq = &priv->rxq; |
| 769 | struct list_head *element; |
| 770 | struct iwl_rx_mem_buffer *rxb; |
| 771 | unsigned long flags; |
Wey-Yi Guy | 54b8155 | 2010-03-17 13:34:35 -0700 | [diff] [blame] | 772 | |
| 773 | spin_lock_irqsave(&rxq->lock, flags); |
Wey-Yi Guy | 54b8155 | 2010-03-17 13:34:35 -0700 | [diff] [blame] | 774 | while ((iwl_rx_queue_space(rxq) > 0) && (rxq->free_count)) { |
Zhu Yi | 6aac74b | 2010-03-22 19:33:41 -0700 | [diff] [blame] | 775 | /* The overwritten rxb must be a used one */ |
| 776 | rxb = rxq->queue[rxq->write]; |
| 777 | BUG_ON(rxb && rxb->page); |
| 778 | |
Wey-Yi Guy | 54b8155 | 2010-03-17 13:34:35 -0700 | [diff] [blame] | 779 | /* Get next free Rx buffer, remove from free list */ |
| 780 | element = rxq->rx_free.next; |
| 781 | rxb = list_entry(element, struct iwl_rx_mem_buffer, list); |
| 782 | list_del(element); |
| 783 | |
| 784 | /* Point to Rx buffer via next RBD in circular buffer */ |
| 785 | rxq->bd[rxq->write] = iwlagn_dma_addr2rbd_ptr(priv, |
| 786 | rxb->page_dma); |
| 787 | rxq->queue[rxq->write] = rxb; |
| 788 | rxq->write = (rxq->write + 1) & RX_QUEUE_MASK; |
| 789 | rxq->free_count--; |
| 790 | } |
| 791 | spin_unlock_irqrestore(&rxq->lock, flags); |
| 792 | /* If the pre-allocated buffer pool is dropping low, schedule to |
| 793 | * refill it */ |
| 794 | if (rxq->free_count <= RX_LOW_WATERMARK) |
| 795 | queue_work(priv->workqueue, &priv->rx_replenish); |
| 796 | |
| 797 | |
| 798 | /* If we've added more space for the firmware to place data, tell it. |
| 799 | * Increment device's write pointer in multiples of 8. */ |
| 800 | if (rxq->write_actual != (rxq->write & ~0x7)) { |
| 801 | spin_lock_irqsave(&rxq->lock, flags); |
| 802 | rxq->need_update = 1; |
| 803 | spin_unlock_irqrestore(&rxq->lock, flags); |
| 804 | iwl_rx_queue_update_write_ptr(priv, rxq); |
| 805 | } |
| 806 | } |
| 807 | |
| 808 | /** |
| 809 | * iwlagn_rx_replenish - Move all used packet from rx_used to rx_free |
| 810 | * |
| 811 | * When moving to rx_free an SKB is allocated for the slot. |
| 812 | * |
| 813 | * Also restock the Rx queue via iwl_rx_queue_restock. |
| 814 | * This is called as a scheduled work item (except for during initialization) |
| 815 | */ |
| 816 | void iwlagn_rx_allocate(struct iwl_priv *priv, gfp_t priority) |
| 817 | { |
| 818 | struct iwl_rx_queue *rxq = &priv->rxq; |
| 819 | struct list_head *element; |
| 820 | struct iwl_rx_mem_buffer *rxb; |
| 821 | struct page *page; |
| 822 | unsigned long flags; |
| 823 | gfp_t gfp_mask = priority; |
| 824 | |
| 825 | while (1) { |
| 826 | spin_lock_irqsave(&rxq->lock, flags); |
| 827 | if (list_empty(&rxq->rx_used)) { |
| 828 | spin_unlock_irqrestore(&rxq->lock, flags); |
| 829 | return; |
| 830 | } |
| 831 | spin_unlock_irqrestore(&rxq->lock, flags); |
| 832 | |
| 833 | if (rxq->free_count > RX_LOW_WATERMARK) |
| 834 | gfp_mask |= __GFP_NOWARN; |
| 835 | |
| 836 | if (priv->hw_params.rx_page_order > 0) |
| 837 | gfp_mask |= __GFP_COMP; |
| 838 | |
| 839 | /* Alloc a new receive buffer */ |
| 840 | page = alloc_pages(gfp_mask, priv->hw_params.rx_page_order); |
| 841 | if (!page) { |
| 842 | if (net_ratelimit()) |
| 843 | IWL_DEBUG_INFO(priv, "alloc_pages failed, " |
| 844 | "order: %d\n", |
| 845 | priv->hw_params.rx_page_order); |
| 846 | |
| 847 | if ((rxq->free_count <= RX_LOW_WATERMARK) && |
| 848 | net_ratelimit()) |
| 849 | IWL_CRIT(priv, "Failed to alloc_pages with %s. Only %u free buffers remaining.\n", |
| 850 | priority == GFP_ATOMIC ? "GFP_ATOMIC" : "GFP_KERNEL", |
| 851 | rxq->free_count); |
| 852 | /* We don't reschedule replenish work here -- we will |
| 853 | * call the restock method and if it still needs |
| 854 | * more buffers it will schedule replenish */ |
| 855 | return; |
| 856 | } |
| 857 | |
| 858 | spin_lock_irqsave(&rxq->lock, flags); |
| 859 | |
| 860 | if (list_empty(&rxq->rx_used)) { |
| 861 | spin_unlock_irqrestore(&rxq->lock, flags); |
| 862 | __free_pages(page, priv->hw_params.rx_page_order); |
| 863 | return; |
| 864 | } |
| 865 | element = rxq->rx_used.next; |
| 866 | rxb = list_entry(element, struct iwl_rx_mem_buffer, list); |
| 867 | list_del(element); |
| 868 | |
| 869 | spin_unlock_irqrestore(&rxq->lock, flags); |
| 870 | |
Zhu Yi | 6aac74b | 2010-03-22 19:33:41 -0700 | [diff] [blame] | 871 | BUG_ON(rxb->page); |
Wey-Yi Guy | 54b8155 | 2010-03-17 13:34:35 -0700 | [diff] [blame] | 872 | rxb->page = page; |
| 873 | /* Get physical address of the RB */ |
Emmanuel Grumbach | 795414d | 2011-06-18 08:12:57 -0700 | [diff] [blame] | 874 | rxb->page_dma = dma_map_page(priv->bus.dev, page, 0, |
Wey-Yi Guy | 54b8155 | 2010-03-17 13:34:35 -0700 | [diff] [blame] | 875 | PAGE_SIZE << priv->hw_params.rx_page_order, |
Emmanuel Grumbach | 795414d | 2011-06-18 08:12:57 -0700 | [diff] [blame] | 876 | DMA_FROM_DEVICE); |
Wey-Yi Guy | 54b8155 | 2010-03-17 13:34:35 -0700 | [diff] [blame] | 877 | /* dma address must be no more than 36 bits */ |
| 878 | BUG_ON(rxb->page_dma & ~DMA_BIT_MASK(36)); |
| 879 | /* and also 256 byte aligned! */ |
| 880 | BUG_ON(rxb->page_dma & DMA_BIT_MASK(8)); |
| 881 | |
| 882 | spin_lock_irqsave(&rxq->lock, flags); |
| 883 | |
| 884 | list_add_tail(&rxb->list, &rxq->rx_free); |
| 885 | rxq->free_count++; |
Wey-Yi Guy | 54b8155 | 2010-03-17 13:34:35 -0700 | [diff] [blame] | 886 | |
| 887 | spin_unlock_irqrestore(&rxq->lock, flags); |
| 888 | } |
| 889 | } |
| 890 | |
| 891 | void iwlagn_rx_replenish(struct iwl_priv *priv) |
| 892 | { |
| 893 | unsigned long flags; |
| 894 | |
| 895 | iwlagn_rx_allocate(priv, GFP_KERNEL); |
| 896 | |
| 897 | spin_lock_irqsave(&priv->lock, flags); |
| 898 | iwlagn_rx_queue_restock(priv); |
| 899 | spin_unlock_irqrestore(&priv->lock, flags); |
| 900 | } |
| 901 | |
| 902 | void iwlagn_rx_replenish_now(struct iwl_priv *priv) |
| 903 | { |
| 904 | iwlagn_rx_allocate(priv, GFP_ATOMIC); |
| 905 | |
| 906 | iwlagn_rx_queue_restock(priv); |
| 907 | } |
| 908 | |
Wey-Yi Guy | 8d80108 | 2010-03-17 13:34:36 -0700 | [diff] [blame] | 909 | int iwlagn_hwrate_to_mac80211_idx(u32 rate_n_flags, enum ieee80211_band band) |
| 910 | { |
| 911 | int idx = 0; |
| 912 | int band_offset = 0; |
| 913 | |
| 914 | /* HT rate format: mac80211 wants an MCS number, which is just LSB */ |
| 915 | if (rate_n_flags & RATE_MCS_HT_MSK) { |
| 916 | idx = (rate_n_flags & 0xff); |
| 917 | return idx; |
| 918 | /* Legacy rate format, search for match in table */ |
| 919 | } else { |
| 920 | if (band == IEEE80211_BAND_5GHZ) |
| 921 | band_offset = IWL_FIRST_OFDM_RATE; |
| 922 | for (idx = band_offset; idx < IWL_RATE_COUNT_LEGACY; idx++) |
| 923 | if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF)) |
| 924 | return idx - band_offset; |
| 925 | } |
| 926 | |
| 927 | return -1; |
| 928 | } |
| 929 | |
Johannes Berg | b6e4c55 | 2010-04-06 04:12:42 -0700 | [diff] [blame] | 930 | static int iwl_get_single_channel_for_scan(struct iwl_priv *priv, |
Johannes Berg | 1dda6d2 | 2010-04-29 04:43:06 -0700 | [diff] [blame] | 931 | struct ieee80211_vif *vif, |
| 932 | enum ieee80211_band band, |
| 933 | struct iwl_scan_channel *scan_ch) |
Johannes Berg | b6e4c55 | 2010-04-06 04:12:42 -0700 | [diff] [blame] | 934 | { |
| 935 | const struct ieee80211_supported_band *sband; |
Johannes Berg | b6e4c55 | 2010-04-06 04:12:42 -0700 | [diff] [blame] | 936 | u16 passive_dwell = 0; |
| 937 | u16 active_dwell = 0; |
Abhijeet Kolekar | 1402364 | 2010-06-02 21:15:10 -0700 | [diff] [blame] | 938 | int added = 0; |
Johannes Berg | b6e4c55 | 2010-04-06 04:12:42 -0700 | [diff] [blame] | 939 | u16 channel = 0; |
| 940 | |
| 941 | sband = iwl_get_hw_mode(priv, band); |
| 942 | if (!sband) { |
| 943 | IWL_ERR(priv, "invalid band\n"); |
| 944 | return added; |
| 945 | } |
| 946 | |
| 947 | active_dwell = iwl_get_active_dwell_time(priv, band, 0); |
Johannes Berg | 1dda6d2 | 2010-04-29 04:43:06 -0700 | [diff] [blame] | 948 | passive_dwell = iwl_get_passive_dwell_time(priv, band, vif); |
Johannes Berg | b6e4c55 | 2010-04-06 04:12:42 -0700 | [diff] [blame] | 949 | |
| 950 | if (passive_dwell <= active_dwell) |
| 951 | passive_dwell = active_dwell + 1; |
| 952 | |
Abhijeet Kolekar | 1402364 | 2010-06-02 21:15:10 -0700 | [diff] [blame] | 953 | channel = iwl_get_single_channel_number(priv, band); |
Johannes Berg | b6e4c55 | 2010-04-06 04:12:42 -0700 | [diff] [blame] | 954 | if (channel) { |
| 955 | scan_ch->channel = cpu_to_le16(channel); |
| 956 | scan_ch->type = SCAN_CHANNEL_TYPE_PASSIVE; |
| 957 | scan_ch->active_dwell = cpu_to_le16(active_dwell); |
| 958 | scan_ch->passive_dwell = cpu_to_le16(passive_dwell); |
| 959 | /* Set txpower levels to defaults */ |
| 960 | scan_ch->dsp_atten = 110; |
| 961 | if (band == IEEE80211_BAND_5GHZ) |
| 962 | scan_ch->tx_gain = ((1 << 5) | (3 << 3)) | 3; |
| 963 | else |
| 964 | scan_ch->tx_gain = ((1 << 5) | (5 << 3)); |
| 965 | added++; |
| 966 | } else |
| 967 | IWL_ERR(priv, "no valid channel found\n"); |
| 968 | return added; |
| 969 | } |
| 970 | |
| 971 | static int iwl_get_channels_for_scan(struct iwl_priv *priv, |
Johannes Berg | 1dda6d2 | 2010-04-29 04:43:06 -0700 | [diff] [blame] | 972 | struct ieee80211_vif *vif, |
Johannes Berg | b6e4c55 | 2010-04-06 04:12:42 -0700 | [diff] [blame] | 973 | enum ieee80211_band band, |
| 974 | u8 is_active, u8 n_probes, |
| 975 | struct iwl_scan_channel *scan_ch) |
| 976 | { |
| 977 | struct ieee80211_channel *chan; |
| 978 | const struct ieee80211_supported_band *sband; |
| 979 | const struct iwl_channel_info *ch_info; |
| 980 | u16 passive_dwell = 0; |
| 981 | u16 active_dwell = 0; |
| 982 | int added, i; |
| 983 | u16 channel; |
| 984 | |
| 985 | sband = iwl_get_hw_mode(priv, band); |
| 986 | if (!sband) |
| 987 | return 0; |
| 988 | |
| 989 | active_dwell = iwl_get_active_dwell_time(priv, band, n_probes); |
Johannes Berg | 1dda6d2 | 2010-04-29 04:43:06 -0700 | [diff] [blame] | 990 | passive_dwell = iwl_get_passive_dwell_time(priv, band, vif); |
Johannes Berg | b6e4c55 | 2010-04-06 04:12:42 -0700 | [diff] [blame] | 991 | |
| 992 | if (passive_dwell <= active_dwell) |
| 993 | passive_dwell = active_dwell + 1; |
| 994 | |
| 995 | for (i = 0, added = 0; i < priv->scan_request->n_channels; i++) { |
| 996 | chan = priv->scan_request->channels[i]; |
| 997 | |
| 998 | if (chan->band != band) |
| 999 | continue; |
| 1000 | |
Shanyu Zhao | 81e9543 | 2010-07-28 13:40:27 -0700 | [diff] [blame] | 1001 | channel = chan->hw_value; |
Johannes Berg | b6e4c55 | 2010-04-06 04:12:42 -0700 | [diff] [blame] | 1002 | scan_ch->channel = cpu_to_le16(channel); |
| 1003 | |
| 1004 | ch_info = iwl_get_channel_info(priv, band, channel); |
| 1005 | if (!is_channel_valid(ch_info)) { |
| 1006 | IWL_DEBUG_SCAN(priv, "Channel %d is INVALID for this band.\n", |
| 1007 | channel); |
| 1008 | continue; |
| 1009 | } |
| 1010 | |
| 1011 | if (!is_active || is_channel_passive(ch_info) || |
| 1012 | (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)) |
| 1013 | scan_ch->type = SCAN_CHANNEL_TYPE_PASSIVE; |
| 1014 | else |
| 1015 | scan_ch->type = SCAN_CHANNEL_TYPE_ACTIVE; |
| 1016 | |
| 1017 | if (n_probes) |
| 1018 | scan_ch->type |= IWL_SCAN_PROBE_MASK(n_probes); |
| 1019 | |
| 1020 | scan_ch->active_dwell = cpu_to_le16(active_dwell); |
| 1021 | scan_ch->passive_dwell = cpu_to_le16(passive_dwell); |
| 1022 | |
| 1023 | /* Set txpower levels to defaults */ |
| 1024 | scan_ch->dsp_atten = 110; |
| 1025 | |
| 1026 | /* NOTE: if we were doing 6Mb OFDM for scans we'd use |
| 1027 | * power level: |
| 1028 | * scan_ch->tx_gain = ((1 << 5) | (2 << 3)) | 3; |
| 1029 | */ |
| 1030 | if (band == IEEE80211_BAND_5GHZ) |
| 1031 | scan_ch->tx_gain = ((1 << 5) | (3 << 3)) | 3; |
| 1032 | else |
| 1033 | scan_ch->tx_gain = ((1 << 5) | (5 << 3)); |
| 1034 | |
| 1035 | IWL_DEBUG_SCAN(priv, "Scanning ch=%d prob=0x%X [%s %d]\n", |
| 1036 | channel, le32_to_cpu(scan_ch->type), |
| 1037 | (scan_ch->type & SCAN_CHANNEL_TYPE_ACTIVE) ? |
| 1038 | "ACTIVE" : "PASSIVE", |
| 1039 | (scan_ch->type & SCAN_CHANNEL_TYPE_ACTIVE) ? |
| 1040 | active_dwell : passive_dwell); |
| 1041 | |
| 1042 | scan_ch++; |
| 1043 | added++; |
| 1044 | } |
| 1045 | |
| 1046 | IWL_DEBUG_SCAN(priv, "total channels to scan %d\n", added); |
| 1047 | return added; |
| 1048 | } |
| 1049 | |
Johannes Berg | 266af4c7 | 2011-03-10 20:13:26 -0800 | [diff] [blame] | 1050 | static int iwl_fill_offch_tx(struct iwl_priv *priv, void *data, size_t maxlen) |
| 1051 | { |
| 1052 | struct sk_buff *skb = priv->_agn.offchan_tx_skb; |
| 1053 | |
| 1054 | if (skb->len < maxlen) |
| 1055 | maxlen = skb->len; |
| 1056 | |
| 1057 | memcpy(data, skb->data, maxlen); |
| 1058 | |
| 1059 | return maxlen; |
| 1060 | } |
| 1061 | |
Johannes Berg | 3eecce5 | 2010-09-13 14:46:33 +0200 | [diff] [blame] | 1062 | int iwlagn_request_scan(struct iwl_priv *priv, struct ieee80211_vif *vif) |
Johannes Berg | b6e4c55 | 2010-04-06 04:12:42 -0700 | [diff] [blame] | 1063 | { |
| 1064 | struct iwl_host_cmd cmd = { |
| 1065 | .id = REPLY_SCAN_CMD, |
Johannes Berg | 3fa5073 | 2011-05-04 07:50:38 -0700 | [diff] [blame] | 1066 | .len = { sizeof(struct iwl_scan_cmd), }, |
Emmanuel Grumbach | e419d62 | 2011-07-08 08:46:14 -0700 | [diff] [blame] | 1067 | .flags = CMD_SYNC, |
Johannes Berg | b6e4c55 | 2010-04-06 04:12:42 -0700 | [diff] [blame] | 1068 | }; |
| 1069 | struct iwl_scan_cmd *scan; |
Johannes Berg | a194e32 | 2010-08-27 08:53:46 -0700 | [diff] [blame] | 1070 | struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; |
Johannes Berg | b6e4c55 | 2010-04-06 04:12:42 -0700 | [diff] [blame] | 1071 | u32 rate_flags = 0; |
| 1072 | u16 cmd_len; |
| 1073 | u16 rx_chain = 0; |
| 1074 | enum ieee80211_band band; |
| 1075 | u8 n_probes = 0; |
| 1076 | u8 rx_ant = priv->hw_params.valid_rx_ant; |
| 1077 | u8 rate; |
| 1078 | bool is_active = false; |
| 1079 | int chan_mod; |
| 1080 | u8 active_chains; |
Johannes Berg | 0e1654f | 2010-05-18 02:48:36 -0700 | [diff] [blame] | 1081 | u8 scan_tx_antennas = priv->hw_params.valid_tx_ant; |
Johannes Berg | 3eecce5 | 2010-09-13 14:46:33 +0200 | [diff] [blame] | 1082 | int ret; |
| 1083 | |
| 1084 | lockdep_assert_held(&priv->mutex); |
Johannes Berg | b6e4c55 | 2010-04-06 04:12:42 -0700 | [diff] [blame] | 1085 | |
Johannes Berg | a194e32 | 2010-08-27 08:53:46 -0700 | [diff] [blame] | 1086 | if (vif) |
| 1087 | ctx = iwl_rxon_ctx_from_vif(vif); |
| 1088 | |
Johannes Berg | b6e4c55 | 2010-04-06 04:12:42 -0700 | [diff] [blame] | 1089 | if (!priv->scan_cmd) { |
| 1090 | priv->scan_cmd = kmalloc(sizeof(struct iwl_scan_cmd) + |
| 1091 | IWL_MAX_SCAN_SIZE, GFP_KERNEL); |
| 1092 | if (!priv->scan_cmd) { |
| 1093 | IWL_DEBUG_SCAN(priv, |
| 1094 | "fail to allocate memory for scan\n"); |
Johannes Berg | 3eecce5 | 2010-09-13 14:46:33 +0200 | [diff] [blame] | 1095 | return -ENOMEM; |
Johannes Berg | b6e4c55 | 2010-04-06 04:12:42 -0700 | [diff] [blame] | 1096 | } |
| 1097 | } |
| 1098 | scan = priv->scan_cmd; |
| 1099 | memset(scan, 0, sizeof(struct iwl_scan_cmd) + IWL_MAX_SCAN_SIZE); |
| 1100 | |
| 1101 | scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH; |
| 1102 | scan->quiet_time = IWL_ACTIVE_QUIET_TIME; |
| 1103 | |
Johannes Berg | 266af4c7 | 2011-03-10 20:13:26 -0800 | [diff] [blame] | 1104 | if (priv->scan_type != IWL_SCAN_OFFCH_TX && |
| 1105 | iwl_is_any_associated(priv)) { |
Johannes Berg | b6e4c55 | 2010-04-06 04:12:42 -0700 | [diff] [blame] | 1106 | u16 interval = 0; |
| 1107 | u32 extra; |
| 1108 | u32 suspend_time = 100; |
| 1109 | u32 scan_suspend_time = 100; |
Johannes Berg | b6e4c55 | 2010-04-06 04:12:42 -0700 | [diff] [blame] | 1110 | |
| 1111 | IWL_DEBUG_INFO(priv, "Scanning while associated...\n"); |
Johannes Berg | 266af4c7 | 2011-03-10 20:13:26 -0800 | [diff] [blame] | 1112 | switch (priv->scan_type) { |
| 1113 | case IWL_SCAN_OFFCH_TX: |
| 1114 | WARN_ON(1); |
| 1115 | break; |
| 1116 | case IWL_SCAN_RADIO_RESET: |
John W. Linville | a6e492b | 2010-07-22 15:24:56 -0400 | [diff] [blame] | 1117 | interval = 0; |
Johannes Berg | 266af4c7 | 2011-03-10 20:13:26 -0800 | [diff] [blame] | 1118 | break; |
| 1119 | case IWL_SCAN_NORMAL: |
John W. Linville | a6e492b | 2010-07-22 15:24:56 -0400 | [diff] [blame] | 1120 | interval = vif->bss_conf.beacon_int; |
Johannes Berg | 266af4c7 | 2011-03-10 20:13:26 -0800 | [diff] [blame] | 1121 | break; |
| 1122 | } |
Johannes Berg | b6e4c55 | 2010-04-06 04:12:42 -0700 | [diff] [blame] | 1123 | |
| 1124 | scan->suspend_time = 0; |
| 1125 | scan->max_out_time = cpu_to_le32(200 * 1024); |
| 1126 | if (!interval) |
| 1127 | interval = suspend_time; |
| 1128 | |
| 1129 | extra = (suspend_time / interval) << 22; |
| 1130 | scan_suspend_time = (extra | |
| 1131 | ((suspend_time % interval) * 1024)); |
| 1132 | scan->suspend_time = cpu_to_le32(scan_suspend_time); |
| 1133 | IWL_DEBUG_SCAN(priv, "suspend_time 0x%X beacon interval %d\n", |
| 1134 | scan_suspend_time, interval); |
Johannes Berg | 266af4c7 | 2011-03-10 20:13:26 -0800 | [diff] [blame] | 1135 | } else if (priv->scan_type == IWL_SCAN_OFFCH_TX) { |
| 1136 | scan->suspend_time = 0; |
| 1137 | scan->max_out_time = |
| 1138 | cpu_to_le32(1024 * priv->_agn.offchan_tx_timeout); |
Johannes Berg | b6e4c55 | 2010-04-06 04:12:42 -0700 | [diff] [blame] | 1139 | } |
| 1140 | |
Johannes Berg | 266af4c7 | 2011-03-10 20:13:26 -0800 | [diff] [blame] | 1141 | switch (priv->scan_type) { |
| 1142 | case IWL_SCAN_RADIO_RESET: |
Johannes Berg | b6e4c55 | 2010-04-06 04:12:42 -0700 | [diff] [blame] | 1143 | IWL_DEBUG_SCAN(priv, "Start internal passive scan.\n"); |
Johannes Berg | 266af4c7 | 2011-03-10 20:13:26 -0800 | [diff] [blame] | 1144 | break; |
| 1145 | case IWL_SCAN_NORMAL: |
| 1146 | if (priv->scan_request->n_ssids) { |
| 1147 | int i, p = 0; |
| 1148 | IWL_DEBUG_SCAN(priv, "Kicking off active scan\n"); |
| 1149 | for (i = 0; i < priv->scan_request->n_ssids; i++) { |
| 1150 | /* always does wildcard anyway */ |
| 1151 | if (!priv->scan_request->ssids[i].ssid_len) |
| 1152 | continue; |
| 1153 | scan->direct_scan[p].id = WLAN_EID_SSID; |
| 1154 | scan->direct_scan[p].len = |
| 1155 | priv->scan_request->ssids[i].ssid_len; |
| 1156 | memcpy(scan->direct_scan[p].ssid, |
| 1157 | priv->scan_request->ssids[i].ssid, |
| 1158 | priv->scan_request->ssids[i].ssid_len); |
| 1159 | n_probes++; |
| 1160 | p++; |
| 1161 | } |
| 1162 | is_active = true; |
| 1163 | } else |
| 1164 | IWL_DEBUG_SCAN(priv, "Start passive scan.\n"); |
| 1165 | break; |
| 1166 | case IWL_SCAN_OFFCH_TX: |
| 1167 | IWL_DEBUG_SCAN(priv, "Start offchannel TX scan.\n"); |
| 1168 | break; |
| 1169 | } |
Johannes Berg | b6e4c55 | 2010-04-06 04:12:42 -0700 | [diff] [blame] | 1170 | |
| 1171 | scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK; |
Johannes Berg | a194e32 | 2010-08-27 08:53:46 -0700 | [diff] [blame] | 1172 | scan->tx_cmd.sta_id = ctx->bcast_sta_id; |
Johannes Berg | b6e4c55 | 2010-04-06 04:12:42 -0700 | [diff] [blame] | 1173 | scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE; |
| 1174 | |
| 1175 | switch (priv->scan_band) { |
| 1176 | case IEEE80211_BAND_2GHZ: |
| 1177 | scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK; |
Johannes Berg | 246ed35 | 2010-08-23 10:46:32 +0200 | [diff] [blame] | 1178 | chan_mod = le32_to_cpu( |
| 1179 | priv->contexts[IWL_RXON_CTX_BSS].active.flags & |
| 1180 | RXON_FLG_CHANNEL_MODE_MSK) |
Johannes Berg | b6e4c55 | 2010-04-06 04:12:42 -0700 | [diff] [blame] | 1181 | >> RXON_FLG_CHANNEL_MODE_POS; |
| 1182 | if (chan_mod == CHANNEL_MODE_PURE_40) { |
| 1183 | rate = IWL_RATE_6M_PLCP; |
| 1184 | } else { |
| 1185 | rate = IWL_RATE_1M_PLCP; |
| 1186 | rate_flags = RATE_MCS_CCK_MSK; |
| 1187 | } |
Johannes Berg | d44ae69 | 2010-08-23 07:56:56 -0700 | [diff] [blame] | 1188 | /* |
| 1189 | * Internal scans are passive, so we can indiscriminately set |
| 1190 | * the BT ignore flag on 2.4 GHz since it applies to TX only. |
| 1191 | */ |
Wey-Yi Guy | 7cb1b08 | 2010-10-06 08:10:00 -0700 | [diff] [blame] | 1192 | if (priv->cfg->bt_params && |
| 1193 | priv->cfg->bt_params->advanced_bt_coexist) |
Johannes Berg | d44ae69 | 2010-08-23 07:56:56 -0700 | [diff] [blame] | 1194 | scan->tx_cmd.tx_flags |= TX_CMD_FLG_IGNORE_BT; |
Johannes Berg | b6e4c55 | 2010-04-06 04:12:42 -0700 | [diff] [blame] | 1195 | break; |
| 1196 | case IEEE80211_BAND_5GHZ: |
| 1197 | rate = IWL_RATE_6M_PLCP; |
Johannes Berg | b6e4c55 | 2010-04-06 04:12:42 -0700 | [diff] [blame] | 1198 | break; |
| 1199 | default: |
Johannes Berg | 3eecce5 | 2010-09-13 14:46:33 +0200 | [diff] [blame] | 1200 | IWL_WARN(priv, "Invalid scan band\n"); |
| 1201 | return -EIO; |
Johannes Berg | b6e4c55 | 2010-04-06 04:12:42 -0700 | [diff] [blame] | 1202 | } |
| 1203 | |
Johannes Berg | 085fbca | 2010-10-04 05:47:23 -0700 | [diff] [blame] | 1204 | /* |
| 1205 | * If active scanning is requested but a certain channel is |
| 1206 | * marked passive, we can do active scanning if we detect |
| 1207 | * transmissions. |
| 1208 | * |
| 1209 | * There is an issue with some firmware versions that triggers |
| 1210 | * a sysassert on a "good CRC threshold" of zero (== disabled), |
| 1211 | * on a radar channel even though this means that we should NOT |
| 1212 | * send probes. |
| 1213 | * |
| 1214 | * The "good CRC threshold" is the number of frames that we |
| 1215 | * need to receive during our dwell time on a channel before |
| 1216 | * sending out probes -- setting this to a huge value will |
| 1217 | * mean we never reach it, but at the same time work around |
| 1218 | * the aforementioned issue. Thus use IWL_GOOD_CRC_TH_NEVER |
| 1219 | * here instead of IWL_GOOD_CRC_TH_DISABLED. |
Johannes Berg | d2690c0 | 2011-04-20 09:10:39 -0700 | [diff] [blame] | 1220 | * |
| 1221 | * This was fixed in later versions along with some other |
| 1222 | * scan changes, and the threshold behaves as a flag in those |
| 1223 | * versions. |
Johannes Berg | 085fbca | 2010-10-04 05:47:23 -0700 | [diff] [blame] | 1224 | */ |
Johannes Berg | d2690c0 | 2011-04-20 09:10:39 -0700 | [diff] [blame] | 1225 | if (priv->new_scan_threshold_behaviour) |
| 1226 | scan->good_CRC_th = is_active ? IWL_GOOD_CRC_TH_DEFAULT : |
| 1227 | IWL_GOOD_CRC_TH_DISABLED; |
| 1228 | else |
| 1229 | scan->good_CRC_th = is_active ? IWL_GOOD_CRC_TH_DEFAULT : |
| 1230 | IWL_GOOD_CRC_TH_NEVER; |
Johannes Berg | 085fbca | 2010-10-04 05:47:23 -0700 | [diff] [blame] | 1231 | |
Johannes Berg | b6e4c55 | 2010-04-06 04:12:42 -0700 | [diff] [blame] | 1232 | band = priv->scan_band; |
| 1233 | |
Johannes Berg | 0e1654f | 2010-05-18 02:48:36 -0700 | [diff] [blame] | 1234 | if (priv->cfg->scan_rx_antennas[band]) |
| 1235 | rx_ant = priv->cfg->scan_rx_antennas[band]; |
Johannes Berg | e7cb495 | 2010-04-13 01:04:35 -0700 | [diff] [blame] | 1236 | |
Stanislaw Gruszka | cd017f2 | 2010-12-23 15:12:30 +0100 | [diff] [blame] | 1237 | if (band == IEEE80211_BAND_2GHZ && |
| 1238 | priv->cfg->bt_params && |
| 1239 | priv->cfg->bt_params->advanced_bt_coexist) { |
| 1240 | /* transmit 2.4 GHz probes only on first antenna */ |
| 1241 | scan_tx_antennas = first_antenna(scan_tx_antennas); |
Wey-Yi Guy | bee008b | 2010-08-23 07:57:04 -0700 | [diff] [blame] | 1242 | } |
| 1243 | |
Johannes Berg | 0e1654f | 2010-05-18 02:48:36 -0700 | [diff] [blame] | 1244 | priv->scan_tx_ant[band] = iwl_toggle_tx_ant(priv, priv->scan_tx_ant[band], |
| 1245 | scan_tx_antennas); |
Johannes Berg | b6e4c55 | 2010-04-06 04:12:42 -0700 | [diff] [blame] | 1246 | rate_flags |= iwl_ant_idx_to_flags(priv->scan_tx_ant[band]); |
| 1247 | scan->tx_cmd.rate_n_flags = iwl_hw_set_rate_n_flags(rate, rate_flags); |
| 1248 | |
| 1249 | /* In power save mode use one chain, otherwise use all chains */ |
| 1250 | if (test_bit(STATUS_POWER_PMI, &priv->status)) { |
| 1251 | /* rx_ant has been set to all valid chains previously */ |
| 1252 | active_chains = rx_ant & |
| 1253 | ((u8)(priv->chain_noise_data.active_chains)); |
| 1254 | if (!active_chains) |
| 1255 | active_chains = rx_ant; |
| 1256 | |
| 1257 | IWL_DEBUG_SCAN(priv, "chain_noise_data.active_chains: %u\n", |
| 1258 | priv->chain_noise_data.active_chains); |
| 1259 | |
| 1260 | rx_ant = first_antenna(active_chains); |
| 1261 | } |
Wey-Yi Guy | 7cb1b08 | 2010-10-06 08:10:00 -0700 | [diff] [blame] | 1262 | if (priv->cfg->bt_params && |
| 1263 | priv->cfg->bt_params->advanced_bt_coexist && |
| 1264 | priv->bt_full_concurrent) { |
Wey-Yi Guy | bee008b | 2010-08-23 07:57:04 -0700 | [diff] [blame] | 1265 | /* operated as 1x1 in full concurrency mode */ |
| 1266 | rx_ant = first_antenna(rx_ant); |
| 1267 | } |
| 1268 | |
Johannes Berg | b6e4c55 | 2010-04-06 04:12:42 -0700 | [diff] [blame] | 1269 | /* MIMO is not used here, but value is required */ |
| 1270 | rx_chain |= priv->hw_params.valid_rx_ant << RXON_RX_CHAIN_VALID_POS; |
| 1271 | rx_chain |= rx_ant << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS; |
| 1272 | rx_chain |= rx_ant << RXON_RX_CHAIN_FORCE_SEL_POS; |
| 1273 | rx_chain |= 0x1 << RXON_RX_CHAIN_DRIVER_FORCE_POS; |
| 1274 | scan->rx_chain = cpu_to_le16(rx_chain); |
Johannes Berg | 266af4c7 | 2011-03-10 20:13:26 -0800 | [diff] [blame] | 1275 | switch (priv->scan_type) { |
| 1276 | case IWL_SCAN_NORMAL: |
Johannes Berg | b6e4c55 | 2010-04-06 04:12:42 -0700 | [diff] [blame] | 1277 | cmd_len = iwl_fill_probe_req(priv, |
| 1278 | (struct ieee80211_mgmt *)scan->data, |
Johannes Berg | 3a0b9aa | 2010-05-12 03:33:12 -0700 | [diff] [blame] | 1279 | vif->addr, |
Johannes Berg | b6e4c55 | 2010-04-06 04:12:42 -0700 | [diff] [blame] | 1280 | priv->scan_request->ie, |
| 1281 | priv->scan_request->ie_len, |
| 1282 | IWL_MAX_SCAN_SIZE - sizeof(*scan)); |
Johannes Berg | 266af4c7 | 2011-03-10 20:13:26 -0800 | [diff] [blame] | 1283 | break; |
| 1284 | case IWL_SCAN_RADIO_RESET: |
Johannes Berg | 3a0b9aa | 2010-05-12 03:33:12 -0700 | [diff] [blame] | 1285 | /* use bcast addr, will not be transmitted but must be valid */ |
Johannes Berg | b6e4c55 | 2010-04-06 04:12:42 -0700 | [diff] [blame] | 1286 | cmd_len = iwl_fill_probe_req(priv, |
| 1287 | (struct ieee80211_mgmt *)scan->data, |
Johannes Berg | 3a0b9aa | 2010-05-12 03:33:12 -0700 | [diff] [blame] | 1288 | iwl_bcast_addr, NULL, 0, |
Johannes Berg | b6e4c55 | 2010-04-06 04:12:42 -0700 | [diff] [blame] | 1289 | IWL_MAX_SCAN_SIZE - sizeof(*scan)); |
Johannes Berg | 266af4c7 | 2011-03-10 20:13:26 -0800 | [diff] [blame] | 1290 | break; |
| 1291 | case IWL_SCAN_OFFCH_TX: |
| 1292 | cmd_len = iwl_fill_offch_tx(priv, scan->data, |
| 1293 | IWL_MAX_SCAN_SIZE |
| 1294 | - sizeof(*scan) |
| 1295 | - sizeof(struct iwl_scan_channel)); |
| 1296 | scan->scan_flags |= IWL_SCAN_FLAGS_ACTION_FRAME_TX; |
| 1297 | break; |
| 1298 | default: |
| 1299 | BUG(); |
Johannes Berg | b6e4c55 | 2010-04-06 04:12:42 -0700 | [diff] [blame] | 1300 | } |
| 1301 | scan->tx_cmd.len = cpu_to_le16(cmd_len); |
Johannes Berg | b6e4c55 | 2010-04-06 04:12:42 -0700 | [diff] [blame] | 1302 | |
| 1303 | scan->filter_flags |= (RXON_FILTER_ACCEPT_GRP_MSK | |
| 1304 | RXON_FILTER_BCON_AWARE_MSK); |
| 1305 | |
Johannes Berg | 266af4c7 | 2011-03-10 20:13:26 -0800 | [diff] [blame] | 1306 | switch (priv->scan_type) { |
| 1307 | case IWL_SCAN_RADIO_RESET: |
Johannes Berg | b6e4c55 | 2010-04-06 04:12:42 -0700 | [diff] [blame] | 1308 | scan->channel_count = |
Johannes Berg | 1dda6d2 | 2010-04-29 04:43:06 -0700 | [diff] [blame] | 1309 | iwl_get_single_channel_for_scan(priv, vif, band, |
Johannes Berg | 266af4c7 | 2011-03-10 20:13:26 -0800 | [diff] [blame] | 1310 | (void *)&scan->data[cmd_len]); |
| 1311 | break; |
| 1312 | case IWL_SCAN_NORMAL: |
Johannes Berg | b6e4c55 | 2010-04-06 04:12:42 -0700 | [diff] [blame] | 1313 | scan->channel_count = |
Johannes Berg | 1dda6d2 | 2010-04-29 04:43:06 -0700 | [diff] [blame] | 1314 | iwl_get_channels_for_scan(priv, vif, band, |
Johannes Berg | b6e4c55 | 2010-04-06 04:12:42 -0700 | [diff] [blame] | 1315 | is_active, n_probes, |
Johannes Berg | 266af4c7 | 2011-03-10 20:13:26 -0800 | [diff] [blame] | 1316 | (void *)&scan->data[cmd_len]); |
| 1317 | break; |
| 1318 | case IWL_SCAN_OFFCH_TX: { |
| 1319 | struct iwl_scan_channel *scan_ch; |
| 1320 | |
| 1321 | scan->channel_count = 1; |
| 1322 | |
| 1323 | scan_ch = (void *)&scan->data[cmd_len]; |
| 1324 | scan_ch->type = SCAN_CHANNEL_TYPE_ACTIVE; |
| 1325 | scan_ch->channel = |
| 1326 | cpu_to_le16(priv->_agn.offchan_tx_chan->hw_value); |
| 1327 | scan_ch->active_dwell = |
| 1328 | cpu_to_le16(priv->_agn.offchan_tx_timeout); |
| 1329 | scan_ch->passive_dwell = 0; |
| 1330 | |
| 1331 | /* Set txpower levels to defaults */ |
| 1332 | scan_ch->dsp_atten = 110; |
| 1333 | |
| 1334 | /* NOTE: if we were doing 6Mb OFDM for scans we'd use |
| 1335 | * power level: |
| 1336 | * scan_ch->tx_gain = ((1 << 5) | (2 << 3)) | 3; |
| 1337 | */ |
| 1338 | if (priv->_agn.offchan_tx_chan->band == IEEE80211_BAND_5GHZ) |
| 1339 | scan_ch->tx_gain = ((1 << 5) | (3 << 3)) | 3; |
| 1340 | else |
| 1341 | scan_ch->tx_gain = ((1 << 5) | (5 << 3)); |
| 1342 | } |
| 1343 | break; |
Johannes Berg | b6e4c55 | 2010-04-06 04:12:42 -0700 | [diff] [blame] | 1344 | } |
Johannes Berg | 266af4c7 | 2011-03-10 20:13:26 -0800 | [diff] [blame] | 1345 | |
Johannes Berg | b6e4c55 | 2010-04-06 04:12:42 -0700 | [diff] [blame] | 1346 | if (scan->channel_count == 0) { |
| 1347 | IWL_DEBUG_SCAN(priv, "channel count %d\n", scan->channel_count); |
Johannes Berg | 3eecce5 | 2010-09-13 14:46:33 +0200 | [diff] [blame] | 1348 | return -EIO; |
Johannes Berg | b6e4c55 | 2010-04-06 04:12:42 -0700 | [diff] [blame] | 1349 | } |
| 1350 | |
Johannes Berg | 3fa5073 | 2011-05-04 07:50:38 -0700 | [diff] [blame] | 1351 | cmd.len[0] += le16_to_cpu(scan->tx_cmd.len) + |
Johannes Berg | b6e4c55 | 2010-04-06 04:12:42 -0700 | [diff] [blame] | 1352 | scan->channel_count * sizeof(struct iwl_scan_channel); |
Johannes Berg | 3fa5073 | 2011-05-04 07:50:38 -0700 | [diff] [blame] | 1353 | cmd.data[0] = scan; |
Johannes Berg | 4ce7cc2 | 2011-05-13 11:57:40 -0700 | [diff] [blame] | 1354 | cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY; |
Johannes Berg | 3fa5073 | 2011-05-04 07:50:38 -0700 | [diff] [blame] | 1355 | scan->len = cpu_to_le16(cmd.len[0]); |
Johannes Berg | b6e4c55 | 2010-04-06 04:12:42 -0700 | [diff] [blame] | 1356 | |
Johannes Berg | 1cf2637 | 2010-09-22 07:32:13 -0700 | [diff] [blame] | 1357 | /* set scan bit here for PAN params */ |
| 1358 | set_bit(STATUS_SCAN_HW, &priv->status); |
| 1359 | |
Wey-Yi Guy | e3f10ce | 2011-07-01 07:59:26 -0700 | [diff] [blame] | 1360 | ret = iwlagn_set_pan_params(priv); |
| 1361 | if (ret) |
| 1362 | return ret; |
Johannes Berg | 3eecce5 | 2010-09-13 14:46:33 +0200 | [diff] [blame] | 1363 | |
Emmanuel Grumbach | bdfbf09 | 2011-07-08 08:46:16 -0700 | [diff] [blame] | 1364 | ret = trans_send_cmd(priv, &cmd); |
Johannes Berg | 3eecce5 | 2010-09-13 14:46:33 +0200 | [diff] [blame] | 1365 | if (ret) { |
| 1366 | clear_bit(STATUS_SCAN_HW, &priv->status); |
Wey-Yi Guy | e3f10ce | 2011-07-01 07:59:26 -0700 | [diff] [blame] | 1367 | iwlagn_set_pan_params(priv); |
Johannes Berg | 3eecce5 | 2010-09-13 14:46:33 +0200 | [diff] [blame] | 1368 | } |
Johannes Berg | 52a02d1 | 2010-08-27 09:44:50 -0700 | [diff] [blame] | 1369 | |
Johannes Berg | 3eecce5 | 2010-09-13 14:46:33 +0200 | [diff] [blame] | 1370 | return ret; |
Johannes Berg | b6e4c55 | 2010-04-06 04:12:42 -0700 | [diff] [blame] | 1371 | } |
Johannes Berg | 1fa61b2 | 2010-04-28 08:44:52 -0700 | [diff] [blame] | 1372 | |
| 1373 | int iwlagn_manage_ibss_station(struct iwl_priv *priv, |
| 1374 | struct ieee80211_vif *vif, bool add) |
| 1375 | { |
Johannes Berg | fd1af15 | 2010-04-30 11:30:43 -0700 | [diff] [blame] | 1376 | struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv; |
| 1377 | |
Johannes Berg | 1fa61b2 | 2010-04-28 08:44:52 -0700 | [diff] [blame] | 1378 | if (add) |
Johannes Berg | a30e311 | 2010-09-22 18:02:01 +0200 | [diff] [blame] | 1379 | return iwlagn_add_bssid_station(priv, vif_priv->ctx, |
| 1380 | vif->bss_conf.bssid, |
| 1381 | &vif_priv->ibss_bssid_sta_id); |
Johannes Berg | fd1af15 | 2010-04-30 11:30:43 -0700 | [diff] [blame] | 1382 | return iwl_remove_station(priv, vif_priv->ibss_bssid_sta_id, |
| 1383 | vif->bss_conf.bssid); |
Johannes Berg | 1fa61b2 | 2010-04-28 08:44:52 -0700 | [diff] [blame] | 1384 | } |
Johannes Berg | 1ff504e | 2010-05-03 01:22:42 -0700 | [diff] [blame] | 1385 | |
| 1386 | void iwl_free_tfds_in_queue(struct iwl_priv *priv, |
| 1387 | int sta_id, int tid, int freed) |
| 1388 | { |
Johannes Berg | a24d52f | 2010-08-06 16:17:53 +0200 | [diff] [blame] | 1389 | lockdep_assert_held(&priv->sta_lock); |
Reinette Chatre | 9c5ac09 | 2010-05-05 02:26:06 -0700 | [diff] [blame] | 1390 | |
Johannes Berg | 1ff504e | 2010-05-03 01:22:42 -0700 | [diff] [blame] | 1391 | if (priv->stations[sta_id].tid[tid].tfds_in_queue >= freed) |
| 1392 | priv->stations[sta_id].tid[tid].tfds_in_queue -= freed; |
| 1393 | else { |
| 1394 | IWL_DEBUG_TX(priv, "free more than tfds_in_queue (%u:%d)\n", |
| 1395 | priv->stations[sta_id].tid[tid].tfds_in_queue, |
| 1396 | freed); |
| 1397 | priv->stations[sta_id].tid[tid].tfds_in_queue = 0; |
| 1398 | } |
| 1399 | } |
Wey-Yi Guy | 716c74b | 2010-06-24 13:22:36 -0700 | [diff] [blame] | 1400 | |
| 1401 | #define IWL_FLUSH_WAIT_MS 2000 |
| 1402 | |
| 1403 | int iwlagn_wait_tx_queue_empty(struct iwl_priv *priv) |
| 1404 | { |
| 1405 | struct iwl_tx_queue *txq; |
| 1406 | struct iwl_queue *q; |
| 1407 | int cnt; |
| 1408 | unsigned long now = jiffies; |
| 1409 | int ret = 0; |
| 1410 | |
| 1411 | /* waiting for all the tx frames complete might take a while */ |
| 1412 | for (cnt = 0; cnt < priv->hw_params.max_txq_num; cnt++) { |
Johannes Berg | 13bb948 | 2010-08-23 10:46:33 +0200 | [diff] [blame] | 1413 | if (cnt == priv->cmd_queue) |
Wey-Yi Guy | 716c74b | 2010-06-24 13:22:36 -0700 | [diff] [blame] | 1414 | continue; |
| 1415 | txq = &priv->txq[cnt]; |
| 1416 | q = &txq->q; |
| 1417 | while (q->read_ptr != q->write_ptr && !time_after(jiffies, |
| 1418 | now + msecs_to_jiffies(IWL_FLUSH_WAIT_MS))) |
| 1419 | msleep(1); |
| 1420 | |
| 1421 | if (q->read_ptr != q->write_ptr) { |
| 1422 | IWL_ERR(priv, "fail to flush all tx fifo queues\n"); |
| 1423 | ret = -ETIMEDOUT; |
| 1424 | break; |
| 1425 | } |
| 1426 | } |
| 1427 | return ret; |
| 1428 | } |
| 1429 | |
| 1430 | #define IWL_TX_QUEUE_MSK 0xfffff |
| 1431 | |
| 1432 | /** |
| 1433 | * iwlagn_txfifo_flush: send REPLY_TXFIFO_FLUSH command to uCode |
| 1434 | * |
| 1435 | * pre-requirements: |
| 1436 | * 1. acquire mutex before calling |
| 1437 | * 2. make sure rf is on and not in exit state |
| 1438 | */ |
| 1439 | int iwlagn_txfifo_flush(struct iwl_priv *priv, u16 flush_control) |
| 1440 | { |
| 1441 | struct iwl_txfifo_flush_cmd flush_cmd; |
| 1442 | struct iwl_host_cmd cmd = { |
| 1443 | .id = REPLY_TXFIFO_FLUSH, |
Johannes Berg | 3fa5073 | 2011-05-04 07:50:38 -0700 | [diff] [blame] | 1444 | .len = { sizeof(struct iwl_txfifo_flush_cmd), }, |
Wey-Yi Guy | 716c74b | 2010-06-24 13:22:36 -0700 | [diff] [blame] | 1445 | .flags = CMD_SYNC, |
Johannes Berg | 3fa5073 | 2011-05-04 07:50:38 -0700 | [diff] [blame] | 1446 | .data = { &flush_cmd, }, |
Wey-Yi Guy | 716c74b | 2010-06-24 13:22:36 -0700 | [diff] [blame] | 1447 | }; |
| 1448 | |
| 1449 | might_sleep(); |
| 1450 | |
| 1451 | memset(&flush_cmd, 0, sizeof(flush_cmd)); |
Wey-Yi Guy | ecdbe86 | 2011-06-08 09:57:26 -0700 | [diff] [blame] | 1452 | if (flush_control & BIT(IWL_RXON_CTX_BSS)) |
| 1453 | flush_cmd.fifo_control = IWL_SCD_VO_MSK | IWL_SCD_VI_MSK | |
Wey-Yi Guy | f88e0ec | 2011-06-08 09:57:25 -0700 | [diff] [blame] | 1454 | IWL_SCD_BE_MSK | IWL_SCD_BK_MSK | |
| 1455 | IWL_SCD_MGMT_MSK; |
Wey-Yi Guy | ecdbe86 | 2011-06-08 09:57:26 -0700 | [diff] [blame] | 1456 | if ((flush_control & BIT(IWL_RXON_CTX_PAN)) && |
| 1457 | (priv->valid_contexts != BIT(IWL_RXON_CTX_BSS))) |
Wey-Yi Guy | f88e0ec | 2011-06-08 09:57:25 -0700 | [diff] [blame] | 1458 | flush_cmd.fifo_control |= IWL_PAN_SCD_VO_MSK | |
| 1459 | IWL_PAN_SCD_VI_MSK | IWL_PAN_SCD_BE_MSK | |
| 1460 | IWL_PAN_SCD_BK_MSK | IWL_PAN_SCD_MGMT_MSK | |
| 1461 | IWL_PAN_SCD_MULTICAST_MSK; |
| 1462 | |
Wey-Yi Guy | 8895075 | 2011-06-06 12:05:46 -0700 | [diff] [blame] | 1463 | if (priv->cfg->sku & EEPROM_SKU_CAP_11N_ENABLE) |
Wey-Yi Guy | 716c74b | 2010-06-24 13:22:36 -0700 | [diff] [blame] | 1464 | flush_cmd.fifo_control |= IWL_AGG_TX_QUEUE_MSK; |
| 1465 | |
| 1466 | IWL_DEBUG_INFO(priv, "fifo queue control: 0X%x\n", |
| 1467 | flush_cmd.fifo_control); |
| 1468 | flush_cmd.flush_control = cpu_to_le16(flush_control); |
| 1469 | |
Emmanuel Grumbach | bdfbf09 | 2011-07-08 08:46:16 -0700 | [diff] [blame] | 1470 | return trans_send_cmd(priv, &cmd); |
Wey-Yi Guy | 716c74b | 2010-06-24 13:22:36 -0700 | [diff] [blame] | 1471 | } |
Wey-Yi Guy | 6555063 | 2010-06-24 13:18:35 -0700 | [diff] [blame] | 1472 | |
| 1473 | void iwlagn_dev_txfifo_flush(struct iwl_priv *priv, u16 flush_control) |
| 1474 | { |
| 1475 | mutex_lock(&priv->mutex); |
| 1476 | ieee80211_stop_queues(priv->hw); |
Wey-Yi Guy | c68744f | 2011-06-18 08:03:18 -0700 | [diff] [blame] | 1477 | if (iwlagn_txfifo_flush(priv, IWL_DROP_ALL)) { |
Wey-Yi Guy | 6555063 | 2010-06-24 13:18:35 -0700 | [diff] [blame] | 1478 | IWL_ERR(priv, "flush request fail\n"); |
| 1479 | goto done; |
| 1480 | } |
| 1481 | IWL_DEBUG_INFO(priv, "wait transmit/flush all frames\n"); |
| 1482 | iwlagn_wait_tx_queue_empty(priv); |
| 1483 | done: |
| 1484 | ieee80211_wake_queues(priv->hw); |
| 1485 | mutex_unlock(&priv->mutex); |
| 1486 | } |
Wey-Yi Guy | b6e116e | 2010-08-23 07:57:14 -0700 | [diff] [blame] | 1487 | |
| 1488 | /* |
| 1489 | * BT coex |
| 1490 | */ |
| 1491 | /* |
| 1492 | * Macros to access the lookup table. |
| 1493 | * |
| 1494 | * The lookup table has 7 inputs: bt3_prio, bt3_txrx, bt_rf_act, wifi_req, |
| 1495 | * wifi_prio, wifi_txrx and wifi_sh_ant_req. |
| 1496 | * |
| 1497 | * It has three outputs: WLAN_ACTIVE, WLAN_KILL and ANT_SWITCH |
| 1498 | * |
| 1499 | * The format is that "registers" 8 through 11 contain the WLAN_ACTIVE bits |
| 1500 | * one after another in 32-bit registers, and "registers" 0 through 7 contain |
| 1501 | * the WLAN_KILL and ANT_SWITCH bits interleaved (in that order). |
| 1502 | * |
| 1503 | * These macros encode that format. |
| 1504 | */ |
| 1505 | #define LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, wifi_req, wifi_prio, \ |
| 1506 | wifi_txrx, wifi_sh_ant_req) \ |
| 1507 | (bt3_prio | (bt3_txrx << 1) | (bt_rf_act << 2) | (wifi_req << 3) | \ |
| 1508 | (wifi_prio << 4) | (wifi_txrx << 5) | (wifi_sh_ant_req << 6)) |
| 1509 | |
| 1510 | #define LUT_PTA_WLAN_ACTIVE_OP(lut, op, val) \ |
| 1511 | lut[8 + ((val) >> 5)] op (cpu_to_le32(BIT((val) & 0x1f))) |
| 1512 | #define LUT_TEST_PTA_WLAN_ACTIVE(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \ |
| 1513 | wifi_prio, wifi_txrx, wifi_sh_ant_req) \ |
| 1514 | (!!(LUT_PTA_WLAN_ACTIVE_OP(lut, &, LUT_VALUE(bt3_prio, bt3_txrx, \ |
| 1515 | bt_rf_act, wifi_req, wifi_prio, wifi_txrx, \ |
| 1516 | wifi_sh_ant_req)))) |
| 1517 | #define LUT_SET_PTA_WLAN_ACTIVE(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \ |
| 1518 | wifi_prio, wifi_txrx, wifi_sh_ant_req) \ |
| 1519 | LUT_PTA_WLAN_ACTIVE_OP(lut, |=, LUT_VALUE(bt3_prio, bt3_txrx, \ |
| 1520 | bt_rf_act, wifi_req, wifi_prio, wifi_txrx, \ |
| 1521 | wifi_sh_ant_req)) |
| 1522 | #define LUT_CLEAR_PTA_WLAN_ACTIVE(lut, bt3_prio, bt3_txrx, bt_rf_act, \ |
| 1523 | wifi_req, wifi_prio, wifi_txrx, \ |
| 1524 | wifi_sh_ant_req) \ |
| 1525 | LUT_PTA_WLAN_ACTIVE_OP(lut, &= ~, LUT_VALUE(bt3_prio, bt3_txrx, \ |
| 1526 | bt_rf_act, wifi_req, wifi_prio, wifi_txrx, \ |
| 1527 | wifi_sh_ant_req)) |
| 1528 | |
| 1529 | #define LUT_WLAN_KILL_OP(lut, op, val) \ |
| 1530 | lut[(val) >> 4] op (cpu_to_le32(BIT(((val) << 1) & 0x1e))) |
| 1531 | #define LUT_TEST_WLAN_KILL(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \ |
| 1532 | wifi_prio, wifi_txrx, wifi_sh_ant_req) \ |
| 1533 | (!!(LUT_WLAN_KILL_OP(lut, &, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \ |
| 1534 | wifi_req, wifi_prio, wifi_txrx, wifi_sh_ant_req)))) |
| 1535 | #define LUT_SET_WLAN_KILL(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \ |
| 1536 | wifi_prio, wifi_txrx, wifi_sh_ant_req) \ |
| 1537 | LUT_WLAN_KILL_OP(lut, |=, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \ |
| 1538 | wifi_req, wifi_prio, wifi_txrx, wifi_sh_ant_req)) |
| 1539 | #define LUT_CLEAR_WLAN_KILL(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \ |
| 1540 | wifi_prio, wifi_txrx, wifi_sh_ant_req) \ |
| 1541 | LUT_WLAN_KILL_OP(lut, &= ~, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \ |
| 1542 | wifi_req, wifi_prio, wifi_txrx, wifi_sh_ant_req)) |
| 1543 | |
| 1544 | #define LUT_ANT_SWITCH_OP(lut, op, val) \ |
| 1545 | lut[(val) >> 4] op (cpu_to_le32(BIT((((val) << 1) & 0x1e) + 1))) |
| 1546 | #define LUT_TEST_ANT_SWITCH(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \ |
| 1547 | wifi_prio, wifi_txrx, wifi_sh_ant_req) \ |
| 1548 | (!!(LUT_ANT_SWITCH_OP(lut, &, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \ |
| 1549 | wifi_req, wifi_prio, wifi_txrx, \ |
| 1550 | wifi_sh_ant_req)))) |
| 1551 | #define LUT_SET_ANT_SWITCH(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \ |
| 1552 | wifi_prio, wifi_txrx, wifi_sh_ant_req) \ |
| 1553 | LUT_ANT_SWITCH_OP(lut, |=, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \ |
| 1554 | wifi_req, wifi_prio, wifi_txrx, wifi_sh_ant_req)) |
| 1555 | #define LUT_CLEAR_ANT_SWITCH(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \ |
| 1556 | wifi_prio, wifi_txrx, wifi_sh_ant_req) \ |
| 1557 | LUT_ANT_SWITCH_OP(lut, &= ~, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \ |
| 1558 | wifi_req, wifi_prio, wifi_txrx, wifi_sh_ant_req)) |
| 1559 | |
| 1560 | static const __le32 iwlagn_def_3w_lookup[12] = { |
| 1561 | cpu_to_le32(0xaaaaaaaa), |
| 1562 | cpu_to_le32(0xaaaaaaaa), |
| 1563 | cpu_to_le32(0xaeaaaaaa), |
| 1564 | cpu_to_le32(0xaaaaaaaa), |
| 1565 | cpu_to_le32(0xcc00ff28), |
| 1566 | cpu_to_le32(0x0000aaaa), |
| 1567 | cpu_to_le32(0xcc00aaaa), |
| 1568 | cpu_to_le32(0x0000aaaa), |
| 1569 | cpu_to_le32(0xc0004000), |
| 1570 | cpu_to_le32(0x00004000), |
| 1571 | cpu_to_le32(0xf0005000), |
Wey-Yi Guy | 9a67d76 | 2010-11-18 10:40:03 -0800 | [diff] [blame] | 1572 | cpu_to_le32(0xf0005000), |
Wey-Yi Guy | b6e116e | 2010-08-23 07:57:14 -0700 | [diff] [blame] | 1573 | }; |
| 1574 | |
| 1575 | static const __le32 iwlagn_concurrent_lookup[12] = { |
| 1576 | cpu_to_le32(0xaaaaaaaa), |
| 1577 | cpu_to_le32(0xaaaaaaaa), |
| 1578 | cpu_to_le32(0xaaaaaaaa), |
| 1579 | cpu_to_le32(0xaaaaaaaa), |
| 1580 | cpu_to_le32(0xaaaaaaaa), |
| 1581 | cpu_to_le32(0xaaaaaaaa), |
| 1582 | cpu_to_le32(0xaaaaaaaa), |
| 1583 | cpu_to_le32(0xaaaaaaaa), |
| 1584 | cpu_to_le32(0x00000000), |
| 1585 | cpu_to_le32(0x00000000), |
| 1586 | cpu_to_le32(0x00000000), |
| 1587 | cpu_to_le32(0x00000000), |
| 1588 | }; |
| 1589 | |
| 1590 | void iwlagn_send_advance_bt_config(struct iwl_priv *priv) |
| 1591 | { |
Wey-Yi Guy | 6013270 | 2011-02-18 17:23:54 -0800 | [diff] [blame] | 1592 | struct iwl_basic_bt_cmd basic = { |
Wey-Yi Guy | b6e116e | 2010-08-23 07:57:14 -0700 | [diff] [blame] | 1593 | .max_kill = IWLAGN_BT_MAX_KILL_DEFAULT, |
| 1594 | .bt3_timer_t7_value = IWLAGN_BT3_T7_DEFAULT, |
| 1595 | .bt3_prio_sample_time = IWLAGN_BT3_PRIO_SAMPLE_DEFAULT, |
| 1596 | .bt3_timer_t2_value = IWLAGN_BT3_T2_DEFAULT, |
| 1597 | }; |
Wey-Yi Guy | 6013270 | 2011-02-18 17:23:54 -0800 | [diff] [blame] | 1598 | struct iwl6000_bt_cmd bt_cmd_6000; |
| 1599 | struct iwl2000_bt_cmd bt_cmd_2000; |
| 1600 | int ret; |
Wey-Yi Guy | b6e116e | 2010-08-23 07:57:14 -0700 | [diff] [blame] | 1601 | |
| 1602 | BUILD_BUG_ON(sizeof(iwlagn_def_3w_lookup) != |
Wey-Yi Guy | 6013270 | 2011-02-18 17:23:54 -0800 | [diff] [blame] | 1603 | sizeof(basic.bt3_lookup_table)); |
Wey-Yi Guy | b6e116e | 2010-08-23 07:57:14 -0700 | [diff] [blame] | 1604 | |
Wey-Yi Guy | 6013270 | 2011-02-18 17:23:54 -0800 | [diff] [blame] | 1605 | if (priv->cfg->bt_params) { |
| 1606 | if (priv->cfg->bt_params->bt_session_2) { |
| 1607 | bt_cmd_2000.prio_boost = cpu_to_le32( |
| 1608 | priv->cfg->bt_params->bt_prio_boost); |
| 1609 | bt_cmd_2000.tx_prio_boost = 0; |
| 1610 | bt_cmd_2000.rx_prio_boost = 0; |
| 1611 | } else { |
| 1612 | bt_cmd_6000.prio_boost = |
| 1613 | priv->cfg->bt_params->bt_prio_boost; |
| 1614 | bt_cmd_6000.tx_prio_boost = 0; |
| 1615 | bt_cmd_6000.rx_prio_boost = 0; |
| 1616 | } |
| 1617 | } else { |
| 1618 | IWL_ERR(priv, "failed to construct BT Coex Config\n"); |
| 1619 | return; |
| 1620 | } |
Wey-Yi Guy | 506aa15 | 2010-11-24 17:25:03 -0800 | [diff] [blame] | 1621 | |
Wey-Yi Guy | 6013270 | 2011-02-18 17:23:54 -0800 | [diff] [blame] | 1622 | basic.kill_ack_mask = priv->kill_ack_mask; |
| 1623 | basic.kill_cts_mask = priv->kill_cts_mask; |
| 1624 | basic.valid = priv->bt_valid; |
Wey-Yi Guy | b6e116e | 2010-08-23 07:57:14 -0700 | [diff] [blame] | 1625 | |
| 1626 | /* |
| 1627 | * Configure BT coex mode to "no coexistence" when the |
| 1628 | * user disabled BT coexistence, we have no interface |
| 1629 | * (might be in monitor mode), or the interface is in |
| 1630 | * IBSS mode (no proper uCode support for coex then). |
| 1631 | */ |
Wey-Yi Guy | b60eec9 | 2011-06-03 13:52:38 -0700 | [diff] [blame] | 1632 | if (!iwlagn_mod_params.bt_coex_active || |
| 1633 | priv->iw_mode == NL80211_IFTYPE_ADHOC) { |
Wey-Yi Guy | 6013270 | 2011-02-18 17:23:54 -0800 | [diff] [blame] | 1634 | basic.flags = IWLAGN_BT_FLAG_COEX_MODE_DISABLED; |
Wey-Yi Guy | b6e116e | 2010-08-23 07:57:14 -0700 | [diff] [blame] | 1635 | } else { |
Wey-Yi Guy | 6013270 | 2011-02-18 17:23:54 -0800 | [diff] [blame] | 1636 | basic.flags = IWLAGN_BT_FLAG_COEX_MODE_3W << |
Wey-Yi Guy | b6e116e | 2010-08-23 07:57:14 -0700 | [diff] [blame] | 1637 | IWLAGN_BT_FLAG_COEX_MODE_SHIFT; |
Wey-Yi Guy | e366176 | 2010-11-23 10:58:54 -0800 | [diff] [blame] | 1638 | if (priv->cfg->bt_params && |
| 1639 | priv->cfg->bt_params->bt_sco_disable) |
Wey-Yi Guy | 6013270 | 2011-02-18 17:23:54 -0800 | [diff] [blame] | 1640 | basic.flags |= IWLAGN_BT_FLAG_SYNC_2_BT_DISABLE; |
Wey-Yi Guy | e366176 | 2010-11-23 10:58:54 -0800 | [diff] [blame] | 1641 | |
Wey-Yi Guy | b6e116e | 2010-08-23 07:57:14 -0700 | [diff] [blame] | 1642 | if (priv->bt_ch_announce) |
Wey-Yi Guy | 6013270 | 2011-02-18 17:23:54 -0800 | [diff] [blame] | 1643 | basic.flags |= IWLAGN_BT_FLAG_CHANNEL_INHIBITION; |
Wey-Yi Guy | fa7f141 | 2011-06-06 12:49:25 -0700 | [diff] [blame] | 1644 | IWL_DEBUG_COEX(priv, "BT coex flag: 0X%x\n", basic.flags); |
Wey-Yi Guy | b6e116e | 2010-08-23 07:57:14 -0700 | [diff] [blame] | 1645 | } |
Wey-Yi Guy | 6013270 | 2011-02-18 17:23:54 -0800 | [diff] [blame] | 1646 | priv->bt_enable_flag = basic.flags; |
Wey-Yi Guy | b6e116e | 2010-08-23 07:57:14 -0700 | [diff] [blame] | 1647 | if (priv->bt_full_concurrent) |
Wey-Yi Guy | 6013270 | 2011-02-18 17:23:54 -0800 | [diff] [blame] | 1648 | memcpy(basic.bt3_lookup_table, iwlagn_concurrent_lookup, |
Wey-Yi Guy | b6e116e | 2010-08-23 07:57:14 -0700 | [diff] [blame] | 1649 | sizeof(iwlagn_concurrent_lookup)); |
| 1650 | else |
Wey-Yi Guy | 6013270 | 2011-02-18 17:23:54 -0800 | [diff] [blame] | 1651 | memcpy(basic.bt3_lookup_table, iwlagn_def_3w_lookup, |
Wey-Yi Guy | b6e116e | 2010-08-23 07:57:14 -0700 | [diff] [blame] | 1652 | sizeof(iwlagn_def_3w_lookup)); |
| 1653 | |
Wey-Yi Guy | fa7f141 | 2011-06-06 12:49:25 -0700 | [diff] [blame] | 1654 | IWL_DEBUG_COEX(priv, "BT coex %s in %s mode\n", |
Wey-Yi Guy | 6013270 | 2011-02-18 17:23:54 -0800 | [diff] [blame] | 1655 | basic.flags ? "active" : "disabled", |
Wey-Yi Guy | b6e116e | 2010-08-23 07:57:14 -0700 | [diff] [blame] | 1656 | priv->bt_full_concurrent ? |
| 1657 | "full concurrency" : "3-wire"); |
| 1658 | |
Wey-Yi Guy | 6013270 | 2011-02-18 17:23:54 -0800 | [diff] [blame] | 1659 | if (priv->cfg->bt_params->bt_session_2) { |
| 1660 | memcpy(&bt_cmd_2000.basic, &basic, |
| 1661 | sizeof(basic)); |
Emmanuel Grumbach | bdfbf09 | 2011-07-08 08:46:16 -0700 | [diff] [blame] | 1662 | ret = trans_send_cmd_pdu(priv, REPLY_BT_CONFIG, |
Emmanuel Grumbach | e419d62 | 2011-07-08 08:46:14 -0700 | [diff] [blame] | 1663 | CMD_SYNC, sizeof(bt_cmd_2000), &bt_cmd_2000); |
Wey-Yi Guy | 6013270 | 2011-02-18 17:23:54 -0800 | [diff] [blame] | 1664 | } else { |
| 1665 | memcpy(&bt_cmd_6000.basic, &basic, |
| 1666 | sizeof(basic)); |
Emmanuel Grumbach | bdfbf09 | 2011-07-08 08:46:16 -0700 | [diff] [blame] | 1667 | ret = trans_send_cmd_pdu(priv, REPLY_BT_CONFIG, |
Emmanuel Grumbach | e419d62 | 2011-07-08 08:46:14 -0700 | [diff] [blame] | 1668 | CMD_SYNC, sizeof(bt_cmd_6000), &bt_cmd_6000); |
Wey-Yi Guy | 6013270 | 2011-02-18 17:23:54 -0800 | [diff] [blame] | 1669 | } |
| 1670 | if (ret) |
Wey-Yi Guy | b6e116e | 2010-08-23 07:57:14 -0700 | [diff] [blame] | 1671 | IWL_ERR(priv, "failed to send BT Coex Config\n"); |
| 1672 | |
Wey-Yi Guy | b6e116e | 2010-08-23 07:57:14 -0700 | [diff] [blame] | 1673 | } |
| 1674 | |
| 1675 | static void iwlagn_bt_traffic_change_work(struct work_struct *work) |
| 1676 | { |
| 1677 | struct iwl_priv *priv = |
| 1678 | container_of(work, struct iwl_priv, bt_traffic_change_work); |
Johannes Berg | 8bd413e | 2010-08-23 10:46:40 +0200 | [diff] [blame] | 1679 | struct iwl_rxon_context *ctx; |
Wey-Yi Guy | b6e116e | 2010-08-23 07:57:14 -0700 | [diff] [blame] | 1680 | int smps_request = -1; |
| 1681 | |
Wey-Yi Guy | c4197c6 | 2011-02-06 08:56:35 -0800 | [diff] [blame] | 1682 | if (priv->bt_enable_flag == IWLAGN_BT_FLAG_COEX_MODE_DISABLED) { |
| 1683 | /* bt coex disabled */ |
| 1684 | return; |
| 1685 | } |
| 1686 | |
Stanislaw Gruszka | 5eda74a | 2010-10-22 17:04:28 +0200 | [diff] [blame] | 1687 | /* |
| 1688 | * Note: bt_traffic_load can be overridden by scan complete and |
| 1689 | * coex profile notifications. Ignore that since only bad consequence |
| 1690 | * can be not matching debug print with actual state. |
| 1691 | */ |
Wey-Yi Guy | fa7f141 | 2011-06-06 12:49:25 -0700 | [diff] [blame] | 1692 | IWL_DEBUG_COEX(priv, "BT traffic load changes: %d\n", |
Wey-Yi Guy | b6e116e | 2010-08-23 07:57:14 -0700 | [diff] [blame] | 1693 | priv->bt_traffic_load); |
| 1694 | |
| 1695 | switch (priv->bt_traffic_load) { |
| 1696 | case IWL_BT_COEX_TRAFFIC_LOAD_NONE: |
Wey-Yi Guy | f5682c0 | 2010-10-23 09:15:44 -0700 | [diff] [blame] | 1697 | if (priv->bt_status) |
| 1698 | smps_request = IEEE80211_SMPS_DYNAMIC; |
| 1699 | else |
| 1700 | smps_request = IEEE80211_SMPS_AUTOMATIC; |
Wey-Yi Guy | b6e116e | 2010-08-23 07:57:14 -0700 | [diff] [blame] | 1701 | break; |
| 1702 | case IWL_BT_COEX_TRAFFIC_LOAD_LOW: |
| 1703 | smps_request = IEEE80211_SMPS_DYNAMIC; |
| 1704 | break; |
| 1705 | case IWL_BT_COEX_TRAFFIC_LOAD_HIGH: |
| 1706 | case IWL_BT_COEX_TRAFFIC_LOAD_CONTINUOUS: |
| 1707 | smps_request = IEEE80211_SMPS_STATIC; |
| 1708 | break; |
| 1709 | default: |
| 1710 | IWL_ERR(priv, "Invalid BT traffic load: %d\n", |
| 1711 | priv->bt_traffic_load); |
| 1712 | break; |
| 1713 | } |
| 1714 | |
| 1715 | mutex_lock(&priv->mutex); |
| 1716 | |
Stanislaw Gruszka | 5eda74a | 2010-10-22 17:04:28 +0200 | [diff] [blame] | 1717 | /* |
| 1718 | * We can not send command to firmware while scanning. When the scan |
| 1719 | * complete we will schedule this work again. We do check with mutex |
| 1720 | * locked to prevent new scan request to arrive. We do not check |
| 1721 | * STATUS_SCANNING to avoid race when queue_work two times from |
| 1722 | * different notifications, but quit and not perform any work at all. |
| 1723 | */ |
| 1724 | if (test_bit(STATUS_SCAN_HW, &priv->status)) |
| 1725 | goto out; |
| 1726 | |
Fry, Donald H | 6b6db91 | 2011-07-08 08:46:17 -0700 | [diff] [blame^] | 1727 | iwl_update_chain_flags(priv); |
Wey-Yi Guy | b6e116e | 2010-08-23 07:57:14 -0700 | [diff] [blame] | 1728 | |
Johannes Berg | 8bd413e | 2010-08-23 10:46:40 +0200 | [diff] [blame] | 1729 | if (smps_request != -1) { |
Wey-Yi Guy | 88e9ba7 | 2011-06-03 07:54:12 -0700 | [diff] [blame] | 1730 | priv->current_ht_config.smps = smps_request; |
Johannes Berg | 8bd413e | 2010-08-23 10:46:40 +0200 | [diff] [blame] | 1731 | for_each_context(priv, ctx) { |
| 1732 | if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_STATION) |
| 1733 | ieee80211_request_smps(ctx->vif, smps_request); |
| 1734 | } |
| 1735 | } |
Stanislaw Gruszka | 5eda74a | 2010-10-22 17:04:28 +0200 | [diff] [blame] | 1736 | out: |
Wey-Yi Guy | b6e116e | 2010-08-23 07:57:14 -0700 | [diff] [blame] | 1737 | mutex_unlock(&priv->mutex); |
| 1738 | } |
| 1739 | |
| 1740 | static void iwlagn_print_uartmsg(struct iwl_priv *priv, |
| 1741 | struct iwl_bt_uart_msg *uart_msg) |
| 1742 | { |
Wey-Yi Guy | fa7f141 | 2011-06-06 12:49:25 -0700 | [diff] [blame] | 1743 | IWL_DEBUG_COEX(priv, "Message Type = 0x%X, SSN = 0x%X, " |
Wey-Yi Guy | b6e116e | 2010-08-23 07:57:14 -0700 | [diff] [blame] | 1744 | "Update Req = 0x%X", |
| 1745 | (BT_UART_MSG_FRAME1MSGTYPE_MSK & uart_msg->frame1) >> |
| 1746 | BT_UART_MSG_FRAME1MSGTYPE_POS, |
| 1747 | (BT_UART_MSG_FRAME1SSN_MSK & uart_msg->frame1) >> |
| 1748 | BT_UART_MSG_FRAME1SSN_POS, |
| 1749 | (BT_UART_MSG_FRAME1UPDATEREQ_MSK & uart_msg->frame1) >> |
| 1750 | BT_UART_MSG_FRAME1UPDATEREQ_POS); |
| 1751 | |
Wey-Yi Guy | fa7f141 | 2011-06-06 12:49:25 -0700 | [diff] [blame] | 1752 | IWL_DEBUG_COEX(priv, "Open connections = 0x%X, Traffic load = 0x%X, " |
Wey-Yi Guy | b6e116e | 2010-08-23 07:57:14 -0700 | [diff] [blame] | 1753 | "Chl_SeqN = 0x%X, In band = 0x%X", |
| 1754 | (BT_UART_MSG_FRAME2OPENCONNECTIONS_MSK & uart_msg->frame2) >> |
| 1755 | BT_UART_MSG_FRAME2OPENCONNECTIONS_POS, |
| 1756 | (BT_UART_MSG_FRAME2TRAFFICLOAD_MSK & uart_msg->frame2) >> |
| 1757 | BT_UART_MSG_FRAME2TRAFFICLOAD_POS, |
| 1758 | (BT_UART_MSG_FRAME2CHLSEQN_MSK & uart_msg->frame2) >> |
| 1759 | BT_UART_MSG_FRAME2CHLSEQN_POS, |
| 1760 | (BT_UART_MSG_FRAME2INBAND_MSK & uart_msg->frame2) >> |
| 1761 | BT_UART_MSG_FRAME2INBAND_POS); |
| 1762 | |
Wey-Yi Guy | fa7f141 | 2011-06-06 12:49:25 -0700 | [diff] [blame] | 1763 | IWL_DEBUG_COEX(priv, "SCO/eSCO = 0x%X, Sniff = 0x%X, A2DP = 0x%X, " |
Wey-Yi Guy | b6e116e | 2010-08-23 07:57:14 -0700 | [diff] [blame] | 1764 | "ACL = 0x%X, Master = 0x%X, OBEX = 0x%X", |
| 1765 | (BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3) >> |
| 1766 | BT_UART_MSG_FRAME3SCOESCO_POS, |
| 1767 | (BT_UART_MSG_FRAME3SNIFF_MSK & uart_msg->frame3) >> |
| 1768 | BT_UART_MSG_FRAME3SNIFF_POS, |
| 1769 | (BT_UART_MSG_FRAME3A2DP_MSK & uart_msg->frame3) >> |
| 1770 | BT_UART_MSG_FRAME3A2DP_POS, |
| 1771 | (BT_UART_MSG_FRAME3ACL_MSK & uart_msg->frame3) >> |
| 1772 | BT_UART_MSG_FRAME3ACL_POS, |
| 1773 | (BT_UART_MSG_FRAME3MASTER_MSK & uart_msg->frame3) >> |
| 1774 | BT_UART_MSG_FRAME3MASTER_POS, |
| 1775 | (BT_UART_MSG_FRAME3OBEX_MSK & uart_msg->frame3) >> |
| 1776 | BT_UART_MSG_FRAME3OBEX_POS); |
| 1777 | |
Wey-Yi Guy | fa7f141 | 2011-06-06 12:49:25 -0700 | [diff] [blame] | 1778 | IWL_DEBUG_COEX(priv, "Idle duration = 0x%X", |
Wey-Yi Guy | b6e116e | 2010-08-23 07:57:14 -0700 | [diff] [blame] | 1779 | (BT_UART_MSG_FRAME4IDLEDURATION_MSK & uart_msg->frame4) >> |
| 1780 | BT_UART_MSG_FRAME4IDLEDURATION_POS); |
| 1781 | |
Wey-Yi Guy | fa7f141 | 2011-06-06 12:49:25 -0700 | [diff] [blame] | 1782 | IWL_DEBUG_COEX(priv, "Tx Activity = 0x%X, Rx Activity = 0x%X, " |
Wey-Yi Guy | b6e116e | 2010-08-23 07:57:14 -0700 | [diff] [blame] | 1783 | "eSCO Retransmissions = 0x%X", |
| 1784 | (BT_UART_MSG_FRAME5TXACTIVITY_MSK & uart_msg->frame5) >> |
| 1785 | BT_UART_MSG_FRAME5TXACTIVITY_POS, |
| 1786 | (BT_UART_MSG_FRAME5RXACTIVITY_MSK & uart_msg->frame5) >> |
| 1787 | BT_UART_MSG_FRAME5RXACTIVITY_POS, |
| 1788 | (BT_UART_MSG_FRAME5ESCORETRANSMIT_MSK & uart_msg->frame5) >> |
| 1789 | BT_UART_MSG_FRAME5ESCORETRANSMIT_POS); |
| 1790 | |
Wey-Yi Guy | fa7f141 | 2011-06-06 12:49:25 -0700 | [diff] [blame] | 1791 | IWL_DEBUG_COEX(priv, "Sniff Interval = 0x%X, Discoverable = 0x%X", |
Wey-Yi Guy | b6e116e | 2010-08-23 07:57:14 -0700 | [diff] [blame] | 1792 | (BT_UART_MSG_FRAME6SNIFFINTERVAL_MSK & uart_msg->frame6) >> |
| 1793 | BT_UART_MSG_FRAME6SNIFFINTERVAL_POS, |
| 1794 | (BT_UART_MSG_FRAME6DISCOVERABLE_MSK & uart_msg->frame6) >> |
| 1795 | BT_UART_MSG_FRAME6DISCOVERABLE_POS); |
| 1796 | |
Wey-Yi Guy | fa7f141 | 2011-06-06 12:49:25 -0700 | [diff] [blame] | 1797 | IWL_DEBUG_COEX(priv, "Sniff Activity = 0x%X, Page = " |
Wey-Yi Guy | 399f66f | 2011-02-22 08:24:22 -0800 | [diff] [blame] | 1798 | "0x%X, Inquiry = 0x%X, Connectable = 0x%X", |
Wey-Yi Guy | b6e116e | 2010-08-23 07:57:14 -0700 | [diff] [blame] | 1799 | (BT_UART_MSG_FRAME7SNIFFACTIVITY_MSK & uart_msg->frame7) >> |
| 1800 | BT_UART_MSG_FRAME7SNIFFACTIVITY_POS, |
Wey-Yi Guy | 399f66f | 2011-02-22 08:24:22 -0800 | [diff] [blame] | 1801 | (BT_UART_MSG_FRAME7PAGE_MSK & uart_msg->frame7) >> |
| 1802 | BT_UART_MSG_FRAME7PAGE_POS, |
| 1803 | (BT_UART_MSG_FRAME7INQUIRY_MSK & uart_msg->frame7) >> |
| 1804 | BT_UART_MSG_FRAME7INQUIRY_POS, |
Wey-Yi Guy | b6e116e | 2010-08-23 07:57:14 -0700 | [diff] [blame] | 1805 | (BT_UART_MSG_FRAME7CONNECTABLE_MSK & uart_msg->frame7) >> |
| 1806 | BT_UART_MSG_FRAME7CONNECTABLE_POS); |
| 1807 | } |
| 1808 | |
Wey-Yi Guy | 506aa15 | 2010-11-24 17:25:03 -0800 | [diff] [blame] | 1809 | static void iwlagn_set_kill_msk(struct iwl_priv *priv, |
| 1810 | struct iwl_bt_uart_msg *uart_msg) |
Wey-Yi Guy | b6e116e | 2010-08-23 07:57:14 -0700 | [diff] [blame] | 1811 | { |
Wey-Yi Guy | 506aa15 | 2010-11-24 17:25:03 -0800 | [diff] [blame] | 1812 | u8 kill_msk; |
Joe Perches | 20407ed | 2010-11-20 18:38:57 -0800 | [diff] [blame] | 1813 | static const __le32 bt_kill_ack_msg[2] = { |
Wey-Yi Guy | 506aa15 | 2010-11-24 17:25:03 -0800 | [diff] [blame] | 1814 | IWLAGN_BT_KILL_ACK_MASK_DEFAULT, |
| 1815 | IWLAGN_BT_KILL_ACK_CTS_MASK_SCO }; |
| 1816 | static const __le32 bt_kill_cts_msg[2] = { |
| 1817 | IWLAGN_BT_KILL_CTS_MASK_DEFAULT, |
| 1818 | IWLAGN_BT_KILL_ACK_CTS_MASK_SCO }; |
Wey-Yi Guy | b6e116e | 2010-08-23 07:57:14 -0700 | [diff] [blame] | 1819 | |
Wey-Yi Guy | 506aa15 | 2010-11-24 17:25:03 -0800 | [diff] [blame] | 1820 | kill_msk = (BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3) |
| 1821 | ? 1 : 0; |
| 1822 | if (priv->kill_ack_mask != bt_kill_ack_msg[kill_msk] || |
| 1823 | priv->kill_cts_mask != bt_kill_cts_msg[kill_msk]) { |
Wey-Yi Guy | b6e116e | 2010-08-23 07:57:14 -0700 | [diff] [blame] | 1824 | priv->bt_valid |= IWLAGN_BT_VALID_KILL_ACK_MASK; |
Wey-Yi Guy | 506aa15 | 2010-11-24 17:25:03 -0800 | [diff] [blame] | 1825 | priv->kill_ack_mask = bt_kill_ack_msg[kill_msk]; |
| 1826 | priv->bt_valid |= IWLAGN_BT_VALID_KILL_CTS_MASK; |
| 1827 | priv->kill_cts_mask = bt_kill_cts_msg[kill_msk]; |
| 1828 | |
Wey-Yi Guy | b6e116e | 2010-08-23 07:57:14 -0700 | [diff] [blame] | 1829 | /* schedule to send runtime bt_config */ |
| 1830 | queue_work(priv->workqueue, &priv->bt_runtime_config); |
| 1831 | } |
Wey-Yi Guy | b6e116e | 2010-08-23 07:57:14 -0700 | [diff] [blame] | 1832 | } |
| 1833 | |
| 1834 | void iwlagn_bt_coex_profile_notif(struct iwl_priv *priv, |
| 1835 | struct iwl_rx_mem_buffer *rxb) |
| 1836 | { |
| 1837 | unsigned long flags; |
| 1838 | struct iwl_rx_packet *pkt = rxb_addr(rxb); |
| 1839 | struct iwl_bt_coex_profile_notif *coex = &pkt->u.bt_coex_profile_notif; |
Wey-Yi Guy | b6e116e | 2010-08-23 07:57:14 -0700 | [diff] [blame] | 1840 | struct iwl_bt_uart_msg *uart_msg = &coex->last_bt_uart_msg; |
Wey-Yi Guy | b6e116e | 2010-08-23 07:57:14 -0700 | [diff] [blame] | 1841 | |
Wey-Yi Guy | c4197c6 | 2011-02-06 08:56:35 -0800 | [diff] [blame] | 1842 | if (priv->bt_enable_flag == IWLAGN_BT_FLAG_COEX_MODE_DISABLED) { |
| 1843 | /* bt coex disabled */ |
| 1844 | return; |
| 1845 | } |
| 1846 | |
Wey-Yi Guy | fa7f141 | 2011-06-06 12:49:25 -0700 | [diff] [blame] | 1847 | IWL_DEBUG_COEX(priv, "BT Coex notification:\n"); |
| 1848 | IWL_DEBUG_COEX(priv, " status: %d\n", coex->bt_status); |
| 1849 | IWL_DEBUG_COEX(priv, " traffic load: %d\n", coex->bt_traffic_load); |
| 1850 | IWL_DEBUG_COEX(priv, " CI compliance: %d\n", |
Wey-Yi Guy | b6e116e | 2010-08-23 07:57:14 -0700 | [diff] [blame] | 1851 | coex->bt_ci_compliance); |
| 1852 | iwlagn_print_uartmsg(priv, uart_msg); |
| 1853 | |
Wey-Yi Guy | 66e863a5 | 2010-11-08 14:54:37 -0800 | [diff] [blame] | 1854 | priv->last_bt_traffic_load = priv->bt_traffic_load; |
Wey-Yi Guy | b6e116e | 2010-08-23 07:57:14 -0700 | [diff] [blame] | 1855 | if (priv->iw_mode != NL80211_IFTYPE_ADHOC) { |
| 1856 | if (priv->bt_status != coex->bt_status || |
Wey-Yi Guy | 66e863a5 | 2010-11-08 14:54:37 -0800 | [diff] [blame] | 1857 | priv->last_bt_traffic_load != coex->bt_traffic_load) { |
Wey-Yi Guy | b6e116e | 2010-08-23 07:57:14 -0700 | [diff] [blame] | 1858 | if (coex->bt_status) { |
| 1859 | /* BT on */ |
| 1860 | if (!priv->bt_ch_announce) |
| 1861 | priv->bt_traffic_load = |
| 1862 | IWL_BT_COEX_TRAFFIC_LOAD_HIGH; |
| 1863 | else |
| 1864 | priv->bt_traffic_load = |
| 1865 | coex->bt_traffic_load; |
| 1866 | } else { |
| 1867 | /* BT off */ |
| 1868 | priv->bt_traffic_load = |
| 1869 | IWL_BT_COEX_TRAFFIC_LOAD_NONE; |
| 1870 | } |
| 1871 | priv->bt_status = coex->bt_status; |
| 1872 | queue_work(priv->workqueue, |
| 1873 | &priv->bt_traffic_change_work); |
| 1874 | } |
Wey-Yi Guy | b6e116e | 2010-08-23 07:57:14 -0700 | [diff] [blame] | 1875 | } |
| 1876 | |
Wey-Yi Guy | 506aa15 | 2010-11-24 17:25:03 -0800 | [diff] [blame] | 1877 | iwlagn_set_kill_msk(priv, uart_msg); |
Wey-Yi Guy | b6e116e | 2010-08-23 07:57:14 -0700 | [diff] [blame] | 1878 | |
| 1879 | /* FIXME: based on notification, adjust the prio_boost */ |
| 1880 | |
| 1881 | spin_lock_irqsave(&priv->lock, flags); |
| 1882 | priv->bt_ci_compliance = coex->bt_ci_compliance; |
| 1883 | spin_unlock_irqrestore(&priv->lock, flags); |
| 1884 | } |
| 1885 | |
| 1886 | void iwlagn_bt_rx_handler_setup(struct iwl_priv *priv) |
| 1887 | { |
| 1888 | iwlagn_rx_handler_setup(priv); |
| 1889 | priv->rx_handlers[REPLY_BT_COEX_PROFILE_NOTIF] = |
| 1890 | iwlagn_bt_coex_profile_notif; |
| 1891 | } |
| 1892 | |
| 1893 | void iwlagn_bt_setup_deferred_work(struct iwl_priv *priv) |
| 1894 | { |
| 1895 | iwlagn_setup_deferred_work(priv); |
| 1896 | |
| 1897 | INIT_WORK(&priv->bt_traffic_change_work, |
| 1898 | iwlagn_bt_traffic_change_work); |
| 1899 | } |
| 1900 | |
| 1901 | void iwlagn_bt_cancel_deferred_work(struct iwl_priv *priv) |
| 1902 | { |
| 1903 | cancel_work_sync(&priv->bt_traffic_change_work); |
| 1904 | } |
Johannes Berg | 5de3306 | 2010-09-22 18:01:58 +0200 | [diff] [blame] | 1905 | |
| 1906 | static bool is_single_rx_stream(struct iwl_priv *priv) |
| 1907 | { |
| 1908 | return priv->current_ht_config.smps == IEEE80211_SMPS_STATIC || |
| 1909 | priv->current_ht_config.single_chain_sufficient; |
| 1910 | } |
| 1911 | |
| 1912 | #define IWL_NUM_RX_CHAINS_MULTIPLE 3 |
| 1913 | #define IWL_NUM_RX_CHAINS_SINGLE 2 |
| 1914 | #define IWL_NUM_IDLE_CHAINS_DUAL 2 |
| 1915 | #define IWL_NUM_IDLE_CHAINS_SINGLE 1 |
| 1916 | |
| 1917 | /* |
| 1918 | * Determine how many receiver/antenna chains to use. |
| 1919 | * |
| 1920 | * More provides better reception via diversity. Fewer saves power |
| 1921 | * at the expense of throughput, but only when not in powersave to |
| 1922 | * start with. |
| 1923 | * |
| 1924 | * MIMO (dual stream) requires at least 2, but works better with 3. |
| 1925 | * This does not determine *which* chains to use, just how many. |
| 1926 | */ |
| 1927 | static int iwl_get_active_rx_chain_count(struct iwl_priv *priv) |
| 1928 | { |
| 1929 | if (priv->cfg->bt_params && |
| 1930 | priv->cfg->bt_params->advanced_bt_coexist && |
| 1931 | (priv->bt_full_concurrent || |
| 1932 | priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)) { |
| 1933 | /* |
| 1934 | * only use chain 'A' in bt high traffic load or |
| 1935 | * full concurrency mode |
| 1936 | */ |
| 1937 | return IWL_NUM_RX_CHAINS_SINGLE; |
| 1938 | } |
| 1939 | /* # of Rx chains to use when expecting MIMO. */ |
| 1940 | if (is_single_rx_stream(priv)) |
| 1941 | return IWL_NUM_RX_CHAINS_SINGLE; |
| 1942 | else |
| 1943 | return IWL_NUM_RX_CHAINS_MULTIPLE; |
| 1944 | } |
| 1945 | |
| 1946 | /* |
| 1947 | * When we are in power saving mode, unless device support spatial |
| 1948 | * multiplexing power save, use the active count for rx chain count. |
| 1949 | */ |
| 1950 | static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt) |
| 1951 | { |
| 1952 | /* # Rx chains when idling, depending on SMPS mode */ |
| 1953 | switch (priv->current_ht_config.smps) { |
| 1954 | case IEEE80211_SMPS_STATIC: |
| 1955 | case IEEE80211_SMPS_DYNAMIC: |
| 1956 | return IWL_NUM_IDLE_CHAINS_SINGLE; |
| 1957 | case IEEE80211_SMPS_OFF: |
| 1958 | return active_cnt; |
| 1959 | default: |
| 1960 | WARN(1, "invalid SMPS mode %d", |
| 1961 | priv->current_ht_config.smps); |
| 1962 | return active_cnt; |
| 1963 | } |
| 1964 | } |
| 1965 | |
| 1966 | /* up to 4 chains */ |
| 1967 | static u8 iwl_count_chain_bitmap(u32 chain_bitmap) |
| 1968 | { |
| 1969 | u8 res; |
| 1970 | res = (chain_bitmap & BIT(0)) >> 0; |
| 1971 | res += (chain_bitmap & BIT(1)) >> 1; |
| 1972 | res += (chain_bitmap & BIT(2)) >> 2; |
| 1973 | res += (chain_bitmap & BIT(3)) >> 3; |
| 1974 | return res; |
| 1975 | } |
| 1976 | |
| 1977 | /** |
| 1978 | * iwlagn_set_rxon_chain - Set up Rx chain usage in "staging" RXON image |
| 1979 | * |
| 1980 | * Selects how many and which Rx receivers/antennas/chains to use. |
| 1981 | * This should not be used for scan command ... it puts data in wrong place. |
| 1982 | */ |
| 1983 | void iwlagn_set_rxon_chain(struct iwl_priv *priv, struct iwl_rxon_context *ctx) |
| 1984 | { |
| 1985 | bool is_single = is_single_rx_stream(priv); |
| 1986 | bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status); |
| 1987 | u8 idle_rx_cnt, active_rx_cnt, valid_rx_cnt; |
| 1988 | u32 active_chains; |
| 1989 | u16 rx_chain; |
| 1990 | |
| 1991 | /* Tell uCode which antennas are actually connected. |
| 1992 | * Before first association, we assume all antennas are connected. |
| 1993 | * Just after first association, iwl_chain_noise_calibration() |
| 1994 | * checks which antennas actually *are* connected. */ |
| 1995 | if (priv->chain_noise_data.active_chains) |
| 1996 | active_chains = priv->chain_noise_data.active_chains; |
| 1997 | else |
| 1998 | active_chains = priv->hw_params.valid_rx_ant; |
| 1999 | |
| 2000 | if (priv->cfg->bt_params && |
| 2001 | priv->cfg->bt_params->advanced_bt_coexist && |
| 2002 | (priv->bt_full_concurrent || |
| 2003 | priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)) { |
| 2004 | /* |
| 2005 | * only use chain 'A' in bt high traffic load or |
| 2006 | * full concurrency mode |
| 2007 | */ |
| 2008 | active_chains = first_antenna(active_chains); |
| 2009 | } |
| 2010 | |
| 2011 | rx_chain = active_chains << RXON_RX_CHAIN_VALID_POS; |
| 2012 | |
| 2013 | /* How many receivers should we use? */ |
| 2014 | active_rx_cnt = iwl_get_active_rx_chain_count(priv); |
| 2015 | idle_rx_cnt = iwl_get_idle_rx_chain_count(priv, active_rx_cnt); |
| 2016 | |
| 2017 | |
| 2018 | /* correct rx chain count according hw settings |
| 2019 | * and chain noise calibration |
| 2020 | */ |
| 2021 | valid_rx_cnt = iwl_count_chain_bitmap(active_chains); |
| 2022 | if (valid_rx_cnt < active_rx_cnt) |
| 2023 | active_rx_cnt = valid_rx_cnt; |
| 2024 | |
| 2025 | if (valid_rx_cnt < idle_rx_cnt) |
| 2026 | idle_rx_cnt = valid_rx_cnt; |
| 2027 | |
| 2028 | rx_chain |= active_rx_cnt << RXON_RX_CHAIN_MIMO_CNT_POS; |
| 2029 | rx_chain |= idle_rx_cnt << RXON_RX_CHAIN_CNT_POS; |
| 2030 | |
| 2031 | ctx->staging.rx_chain = cpu_to_le16(rx_chain); |
| 2032 | |
| 2033 | if (!is_single && (active_rx_cnt >= IWL_NUM_RX_CHAINS_SINGLE) && is_cam) |
| 2034 | ctx->staging.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK; |
| 2035 | else |
| 2036 | ctx->staging.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK; |
| 2037 | |
| 2038 | IWL_DEBUG_ASSOC(priv, "rx_chain=0x%X active=%d idle=%d\n", |
| 2039 | ctx->staging.rx_chain, |
| 2040 | active_rx_cnt, idle_rx_cnt); |
| 2041 | |
| 2042 | WARN_ON(active_rx_cnt == 0 || idle_rx_cnt == 0 || |
| 2043 | active_rx_cnt < idle_rx_cnt); |
| 2044 | } |
Johannes Berg | facd982 | 2010-09-22 18:02:05 +0200 | [diff] [blame] | 2045 | |
| 2046 | u8 iwl_toggle_tx_ant(struct iwl_priv *priv, u8 ant, u8 valid) |
| 2047 | { |
| 2048 | int i; |
| 2049 | u8 ind = ant; |
| 2050 | |
| 2051 | if (priv->band == IEEE80211_BAND_2GHZ && |
| 2052 | priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH) |
| 2053 | return 0; |
| 2054 | |
| 2055 | for (i = 0; i < RATE_ANT_NUM - 1; i++) { |
| 2056 | ind = (ind + 1) < RATE_ANT_NUM ? ind + 1 : 0; |
| 2057 | if (valid & BIT(ind)) |
| 2058 | return ind; |
| 2059 | } |
| 2060 | return ant; |
| 2061 | } |
Johannes Berg | fed7329 | 2010-09-22 18:02:06 +0200 | [diff] [blame] | 2062 | |
| 2063 | static const char *get_csr_string(int cmd) |
| 2064 | { |
| 2065 | switch (cmd) { |
| 2066 | IWL_CMD(CSR_HW_IF_CONFIG_REG); |
| 2067 | IWL_CMD(CSR_INT_COALESCING); |
| 2068 | IWL_CMD(CSR_INT); |
| 2069 | IWL_CMD(CSR_INT_MASK); |
| 2070 | IWL_CMD(CSR_FH_INT_STATUS); |
| 2071 | IWL_CMD(CSR_GPIO_IN); |
| 2072 | IWL_CMD(CSR_RESET); |
| 2073 | IWL_CMD(CSR_GP_CNTRL); |
| 2074 | IWL_CMD(CSR_HW_REV); |
| 2075 | IWL_CMD(CSR_EEPROM_REG); |
| 2076 | IWL_CMD(CSR_EEPROM_GP); |
| 2077 | IWL_CMD(CSR_OTP_GP_REG); |
| 2078 | IWL_CMD(CSR_GIO_REG); |
| 2079 | IWL_CMD(CSR_GP_UCODE_REG); |
| 2080 | IWL_CMD(CSR_GP_DRIVER_REG); |
| 2081 | IWL_CMD(CSR_UCODE_DRV_GP1); |
| 2082 | IWL_CMD(CSR_UCODE_DRV_GP2); |
| 2083 | IWL_CMD(CSR_LED_REG); |
| 2084 | IWL_CMD(CSR_DRAM_INT_TBL_REG); |
| 2085 | IWL_CMD(CSR_GIO_CHICKEN_BITS); |
| 2086 | IWL_CMD(CSR_ANA_PLL_CFG); |
| 2087 | IWL_CMD(CSR_HW_REV_WA_REG); |
| 2088 | IWL_CMD(CSR_DBG_HPET_MEM_REG); |
| 2089 | default: |
| 2090 | return "UNKNOWN"; |
| 2091 | } |
| 2092 | } |
| 2093 | |
| 2094 | void iwl_dump_csr(struct iwl_priv *priv) |
| 2095 | { |
| 2096 | int i; |
Joe Perches | 20407ed | 2010-11-20 18:38:57 -0800 | [diff] [blame] | 2097 | static const u32 csr_tbl[] = { |
Johannes Berg | fed7329 | 2010-09-22 18:02:06 +0200 | [diff] [blame] | 2098 | CSR_HW_IF_CONFIG_REG, |
| 2099 | CSR_INT_COALESCING, |
| 2100 | CSR_INT, |
| 2101 | CSR_INT_MASK, |
| 2102 | CSR_FH_INT_STATUS, |
| 2103 | CSR_GPIO_IN, |
| 2104 | CSR_RESET, |
| 2105 | CSR_GP_CNTRL, |
| 2106 | CSR_HW_REV, |
| 2107 | CSR_EEPROM_REG, |
| 2108 | CSR_EEPROM_GP, |
| 2109 | CSR_OTP_GP_REG, |
| 2110 | CSR_GIO_REG, |
| 2111 | CSR_GP_UCODE_REG, |
| 2112 | CSR_GP_DRIVER_REG, |
| 2113 | CSR_UCODE_DRV_GP1, |
| 2114 | CSR_UCODE_DRV_GP2, |
| 2115 | CSR_LED_REG, |
| 2116 | CSR_DRAM_INT_TBL_REG, |
| 2117 | CSR_GIO_CHICKEN_BITS, |
| 2118 | CSR_ANA_PLL_CFG, |
| 2119 | CSR_HW_REV_WA_REG, |
| 2120 | CSR_DBG_HPET_MEM_REG |
| 2121 | }; |
| 2122 | IWL_ERR(priv, "CSR values:\n"); |
| 2123 | IWL_ERR(priv, "(2nd byte of CSR_INT_COALESCING is " |
| 2124 | "CSR_INT_PERIODIC_REG)\n"); |
| 2125 | for (i = 0; i < ARRAY_SIZE(csr_tbl); i++) { |
| 2126 | IWL_ERR(priv, " %25s: 0X%08x\n", |
| 2127 | get_csr_string(csr_tbl[i]), |
| 2128 | iwl_read32(priv, csr_tbl[i])); |
| 2129 | } |
| 2130 | } |
Johannes Berg | 84fac3d | 2010-09-22 18:02:07 +0200 | [diff] [blame] | 2131 | |
| 2132 | static const char *get_fh_string(int cmd) |
| 2133 | { |
| 2134 | switch (cmd) { |
| 2135 | IWL_CMD(FH_RSCSR_CHNL0_STTS_WPTR_REG); |
| 2136 | IWL_CMD(FH_RSCSR_CHNL0_RBDCB_BASE_REG); |
| 2137 | IWL_CMD(FH_RSCSR_CHNL0_WPTR); |
| 2138 | IWL_CMD(FH_MEM_RCSR_CHNL0_CONFIG_REG); |
| 2139 | IWL_CMD(FH_MEM_RSSR_SHARED_CTRL_REG); |
| 2140 | IWL_CMD(FH_MEM_RSSR_RX_STATUS_REG); |
| 2141 | IWL_CMD(FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV); |
| 2142 | IWL_CMD(FH_TSSR_TX_STATUS_REG); |
| 2143 | IWL_CMD(FH_TSSR_TX_ERROR_REG); |
| 2144 | default: |
| 2145 | return "UNKNOWN"; |
| 2146 | } |
| 2147 | } |
| 2148 | |
| 2149 | int iwl_dump_fh(struct iwl_priv *priv, char **buf, bool display) |
| 2150 | { |
| 2151 | int i; |
| 2152 | #ifdef CONFIG_IWLWIFI_DEBUG |
| 2153 | int pos = 0; |
| 2154 | size_t bufsz = 0; |
| 2155 | #endif |
Joe Perches | 20407ed | 2010-11-20 18:38:57 -0800 | [diff] [blame] | 2156 | static const u32 fh_tbl[] = { |
Johannes Berg | 84fac3d | 2010-09-22 18:02:07 +0200 | [diff] [blame] | 2157 | FH_RSCSR_CHNL0_STTS_WPTR_REG, |
| 2158 | FH_RSCSR_CHNL0_RBDCB_BASE_REG, |
| 2159 | FH_RSCSR_CHNL0_WPTR, |
| 2160 | FH_MEM_RCSR_CHNL0_CONFIG_REG, |
| 2161 | FH_MEM_RSSR_SHARED_CTRL_REG, |
| 2162 | FH_MEM_RSSR_RX_STATUS_REG, |
| 2163 | FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV, |
| 2164 | FH_TSSR_TX_STATUS_REG, |
| 2165 | FH_TSSR_TX_ERROR_REG |
| 2166 | }; |
| 2167 | #ifdef CONFIG_IWLWIFI_DEBUG |
| 2168 | if (display) { |
| 2169 | bufsz = ARRAY_SIZE(fh_tbl) * 48 + 40; |
| 2170 | *buf = kmalloc(bufsz, GFP_KERNEL); |
| 2171 | if (!*buf) |
| 2172 | return -ENOMEM; |
| 2173 | pos += scnprintf(*buf + pos, bufsz - pos, |
| 2174 | "FH register values:\n"); |
| 2175 | for (i = 0; i < ARRAY_SIZE(fh_tbl); i++) { |
| 2176 | pos += scnprintf(*buf + pos, bufsz - pos, |
| 2177 | " %34s: 0X%08x\n", |
| 2178 | get_fh_string(fh_tbl[i]), |
| 2179 | iwl_read_direct32(priv, fh_tbl[i])); |
| 2180 | } |
| 2181 | return pos; |
| 2182 | } |
| 2183 | #endif |
| 2184 | IWL_ERR(priv, "FH register values:\n"); |
| 2185 | for (i = 0; i < ARRAY_SIZE(fh_tbl); i++) { |
| 2186 | IWL_ERR(priv, " %34s: 0X%08x\n", |
| 2187 | get_fh_string(fh_tbl[i]), |
| 2188 | iwl_read_direct32(priv, fh_tbl[i])); |
| 2189 | } |
| 2190 | return 0; |
| 2191 | } |
Johannes Berg | 7194207c | 2011-01-04 16:22:00 -0800 | [diff] [blame] | 2192 | |
| 2193 | /* notification wait support */ |
| 2194 | void iwlagn_init_notification_wait(struct iwl_priv *priv, |
| 2195 | struct iwl_notification_wait *wait_entry, |
Johannes Berg | 09f18af | 2011-04-13 03:14:47 -0700 | [diff] [blame] | 2196 | u8 cmd, |
Johannes Berg | 7194207c | 2011-01-04 16:22:00 -0800 | [diff] [blame] | 2197 | void (*fn)(struct iwl_priv *priv, |
Johannes Berg | 09f18af | 2011-04-13 03:14:47 -0700 | [diff] [blame] | 2198 | struct iwl_rx_packet *pkt, |
| 2199 | void *data), |
| 2200 | void *fn_data) |
Johannes Berg | 7194207c | 2011-01-04 16:22:00 -0800 | [diff] [blame] | 2201 | { |
| 2202 | wait_entry->fn = fn; |
Johannes Berg | 09f18af | 2011-04-13 03:14:47 -0700 | [diff] [blame] | 2203 | wait_entry->fn_data = fn_data; |
Johannes Berg | 7194207c | 2011-01-04 16:22:00 -0800 | [diff] [blame] | 2204 | wait_entry->cmd = cmd; |
| 2205 | wait_entry->triggered = false; |
Johannes Berg | e74fe23 | 2011-04-13 03:14:49 -0700 | [diff] [blame] | 2206 | wait_entry->aborted = false; |
Johannes Berg | 7194207c | 2011-01-04 16:22:00 -0800 | [diff] [blame] | 2207 | |
| 2208 | spin_lock_bh(&priv->_agn.notif_wait_lock); |
| 2209 | list_add(&wait_entry->list, &priv->_agn.notif_waits); |
| 2210 | spin_unlock_bh(&priv->_agn.notif_wait_lock); |
| 2211 | } |
| 2212 | |
Johannes Berg | a8674a1 | 2011-04-13 03:14:48 -0700 | [diff] [blame] | 2213 | int iwlagn_wait_notification(struct iwl_priv *priv, |
| 2214 | struct iwl_notification_wait *wait_entry, |
| 2215 | unsigned long timeout) |
Johannes Berg | 7194207c | 2011-01-04 16:22:00 -0800 | [diff] [blame] | 2216 | { |
| 2217 | int ret; |
| 2218 | |
| 2219 | ret = wait_event_timeout(priv->_agn.notif_waitq, |
Johannes Berg | e74fe23 | 2011-04-13 03:14:49 -0700 | [diff] [blame] | 2220 | wait_entry->triggered || wait_entry->aborted, |
Johannes Berg | 7194207c | 2011-01-04 16:22:00 -0800 | [diff] [blame] | 2221 | timeout); |
| 2222 | |
| 2223 | spin_lock_bh(&priv->_agn.notif_wait_lock); |
| 2224 | list_del(&wait_entry->list); |
| 2225 | spin_unlock_bh(&priv->_agn.notif_wait_lock); |
| 2226 | |
Johannes Berg | e74fe23 | 2011-04-13 03:14:49 -0700 | [diff] [blame] | 2227 | if (wait_entry->aborted) |
| 2228 | return -EIO; |
| 2229 | |
Johannes Berg | a8674a1 | 2011-04-13 03:14:48 -0700 | [diff] [blame] | 2230 | /* return value is always >= 0 */ |
| 2231 | if (ret <= 0) |
| 2232 | return -ETIMEDOUT; |
| 2233 | return 0; |
Johannes Berg | 7194207c | 2011-01-04 16:22:00 -0800 | [diff] [blame] | 2234 | } |
| 2235 | |
| 2236 | void iwlagn_remove_notification(struct iwl_priv *priv, |
| 2237 | struct iwl_notification_wait *wait_entry) |
| 2238 | { |
| 2239 | spin_lock_bh(&priv->_agn.notif_wait_lock); |
| 2240 | list_del(&wait_entry->list); |
| 2241 | spin_unlock_bh(&priv->_agn.notif_wait_lock); |
| 2242 | } |
Johannes Berg | bc4f8ad | 2011-04-13 03:14:45 -0700 | [diff] [blame] | 2243 | |
Johannes Berg | 3e14c1f | 2011-04-13 03:14:46 -0700 | [diff] [blame] | 2244 | int iwlagn_start_device(struct iwl_priv *priv) |
| 2245 | { |
| 2246 | int ret; |
| 2247 | |
Wey-Yi Guy | 8895075 | 2011-06-06 12:05:46 -0700 | [diff] [blame] | 2248 | if ((priv->cfg->sku & EEPROM_SKU_CAP_AMT_ENABLE) && |
| 2249 | iwl_prepare_card_hw(priv)) { |
Johannes Berg | 3e14c1f | 2011-04-13 03:14:46 -0700 | [diff] [blame] | 2250 | IWL_WARN(priv, "Exit HW not ready\n"); |
| 2251 | return -EIO; |
| 2252 | } |
| 2253 | |
| 2254 | /* If platform's RF_KILL switch is NOT set to KILL */ |
| 2255 | if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW) |
| 2256 | clear_bit(STATUS_RF_KILL_HW, &priv->status); |
| 2257 | else |
| 2258 | set_bit(STATUS_RF_KILL_HW, &priv->status); |
| 2259 | |
| 2260 | if (iwl_is_rfkill(priv)) { |
| 2261 | wiphy_rfkill_set_hw_state(priv->hw->wiphy, true); |
| 2262 | iwl_enable_interrupts(priv); |
| 2263 | return -ERFKILL; |
| 2264 | } |
| 2265 | |
| 2266 | iwl_write32(priv, CSR_INT, 0xFFFFFFFF); |
| 2267 | |
| 2268 | ret = iwlagn_hw_nic_init(priv); |
| 2269 | if (ret) { |
| 2270 | IWL_ERR(priv, "Unable to init nic\n"); |
| 2271 | return ret; |
| 2272 | } |
| 2273 | |
| 2274 | /* make sure rfkill handshake bits are cleared */ |
| 2275 | iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL); |
| 2276 | iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, |
| 2277 | CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED); |
| 2278 | |
| 2279 | /* clear (again), then enable host interrupts */ |
| 2280 | iwl_write32(priv, CSR_INT, 0xFFFFFFFF); |
| 2281 | iwl_enable_interrupts(priv); |
| 2282 | |
| 2283 | /* really make sure rfkill handshake bits are cleared */ |
| 2284 | iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL); |
| 2285 | iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL); |
| 2286 | |
| 2287 | return 0; |
| 2288 | } |
| 2289 | |
Johannes Berg | bc4f8ad | 2011-04-13 03:14:45 -0700 | [diff] [blame] | 2290 | void iwlagn_stop_device(struct iwl_priv *priv) |
| 2291 | { |
| 2292 | unsigned long flags; |
| 2293 | |
| 2294 | /* stop and reset the on-board processor */ |
| 2295 | iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET); |
| 2296 | |
| 2297 | /* tell the device to stop sending interrupts */ |
| 2298 | spin_lock_irqsave(&priv->lock, flags); |
| 2299 | iwl_disable_interrupts(priv); |
| 2300 | spin_unlock_irqrestore(&priv->lock, flags); |
| 2301 | iwl_synchronize_irq(priv); |
| 2302 | |
| 2303 | /* device going down, Stop using ICT table */ |
| 2304 | iwl_disable_ict(priv); |
| 2305 | |
Johannes Berg | 9d39e5b | 2011-04-19 07:38:23 -0700 | [diff] [blame] | 2306 | /* |
| 2307 | * If a HW restart happens during firmware loading, |
| 2308 | * then the firmware loading might call this function |
| 2309 | * and later it might be called again due to the |
| 2310 | * restart. So don't process again if the device is |
| 2311 | * already dead. |
| 2312 | */ |
| 2313 | if (test_bit(STATUS_DEVICE_ENABLED, &priv->status)) { |
Emmanuel Grumbach | bdfbf09 | 2011-07-08 08:46:16 -0700 | [diff] [blame] | 2314 | trans_tx_stop(priv); |
| 2315 | trans_rx_stop(priv); |
Johannes Berg | bc4f8ad | 2011-04-13 03:14:45 -0700 | [diff] [blame] | 2316 | |
Emmanuel Grumbach | c2c52e8 | 2011-07-08 08:46:11 -0700 | [diff] [blame] | 2317 | /* Power-down device's busmaster DMA clocks */ |
| 2318 | iwl_write_prph(priv, APMG_CLK_DIS_REG, |
| 2319 | APMG_CLK_VAL_DMA_CLK_RQT); |
| 2320 | udelay(5); |
| 2321 | } |
Johannes Berg | bc4f8ad | 2011-04-13 03:14:45 -0700 | [diff] [blame] | 2322 | |
| 2323 | /* Make sure (redundant) we've released our request to stay awake */ |
| 2324 | iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); |
| 2325 | |
| 2326 | /* Stop the device, and put it in low power state */ |
| 2327 | iwl_apm_stop(priv); |
| 2328 | } |