drivers/net/wireless/ath/carl9170/wlan.h

   1 /*
   2  * Shared Atheros AR9170 Header
   3  *
   4  * RX/TX meta descriptor format
   5  *
   6  * Copyright 2008, Johannes Berg <johannes@sipsolutions.net>
   7  * Copyright 2009-2011 Christian Lamparter <chunkeey@googlemail.com>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; see the file COPYING.  If not, see
  20  * http://www.gnu.org/licenses/.
  21  *
  22  * This file incorporates work covered by the following copyright and
  23  * permission notice:
  24  *    Copyright (c) 2007-2008 Atheros Communications, Inc.
  25  *
  26  *    Permission to use, copy, modify, and/or distribute this software for any
  27  *    purpose with or without fee is hereby granted, provided that the above
  28  *    copyright notice and this permission notice appear in all copies.
  29  *
  30  *    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  31  *    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  32  *    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  33  *    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  34  *    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  35  *    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  36  *    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  37  */
  38
  39 #ifndef __CARL9170_SHARED_WLAN_H
  40 #define __CARL9170_SHARED_WLAN_H
  41
  42 #include "fwcmd.h"
  43
  44 #define AR9170_RX_PHY_RATE_CCK_1M               0x0a
  45 #define AR9170_RX_PHY_RATE_CCK_2M               0x14
  46 #define AR9170_RX_PHY_RATE_CCK_5M               0x37
  47 #define AR9170_RX_PHY_RATE_CCK_11M              0x6e
  48
  49 #define AR9170_ENC_ALG_NONE                     0x0
  50 #define AR9170_ENC_ALG_WEP64                    0x1
  51 #define AR9170_ENC_ALG_TKIP                     0x2
  52 #define AR9170_ENC_ALG_AESCCMP                  0x4
  53 #define AR9170_ENC_ALG_WEP128                   0x5
  54 #define AR9170_ENC_ALG_WEP256                   0x6
  55 #define AR9170_ENC_ALG_CENC                     0x7
  56
  57 #define AR9170_RX_ENC_SOFTWARE                  0x8
  58
  59 #define AR9170_RX_STATUS_MODULATION             0x03
  60 #define AR9170_RX_STATUS_MODULATION_S           0
  61 #define AR9170_RX_STATUS_MODULATION_CCK         0x00
  62 #define AR9170_RX_STATUS_MODULATION_OFDM        0x01
  63 #define AR9170_RX_STATUS_MODULATION_HT          0x02
  64 #define AR9170_RX_STATUS_MODULATION_DUPOFDM     0x03
  65
  66 /* depends on modulation */
  67 #define AR9170_RX_STATUS_SHORT_PREAMBLE         0x08
  68 #define AR9170_RX_STATUS_GREENFIELD             0x08
  69
  70 #define AR9170_RX_STATUS_MPDU                   0x30
  71 #define AR9170_RX_STATUS_MPDU_S                 4
  72 #define AR9170_RX_STATUS_MPDU_SINGLE            0x00
  73 #define AR9170_RX_STATUS_MPDU_FIRST             0x20
  74 #define AR9170_RX_STATUS_MPDU_MIDDLE            0x30
  75 #define AR9170_RX_STATUS_MPDU_LAST              0x10
  76
  77 #define AR9170_RX_STATUS_CONT_AGGR              0x40
  78 #define AR9170_RX_STATUS_TOTAL_ERROR            0x80
  79
  80 #define AR9170_RX_ERROR_RXTO                    0x01
  81 #define AR9170_RX_ERROR_OVERRUN                 0x02
  82 #define AR9170_RX_ERROR_DECRYPT                 0x04
  83 #define AR9170_RX_ERROR_FCS                     0x08
  84 #define AR9170_RX_ERROR_WRONG_RA                0x10
  85 #define AR9170_RX_ERROR_PLCP                    0x20
  86 #define AR9170_RX_ERROR_MMIC                    0x40
  87
  88 /* these are either-or */
  89 #define AR9170_TX_MAC_PROT_RTS                  0x0001
  90 #define AR9170_TX_MAC_PROT_CTS                  0x0002
  91 #define AR9170_TX_MAC_PROT                      0x0003
  92
  93 #define AR9170_TX_MAC_NO_ACK                    0x0004
  94 /* if unset, MAC will only do SIFS space before frame */
  95 #define AR9170_TX_MAC_BACKOFF                   0x0008
  96 #define AR9170_TX_MAC_BURST                     0x0010
  97 #define AR9170_TX_MAC_AGGR                      0x0020
  98
  99 /* encryption is a two-bit field */
 100 #define AR9170_TX_MAC_ENCR_NONE                 0x0000
 101 #define AR9170_TX_MAC_ENCR_RC4                  0x0040
 102 #define AR9170_TX_MAC_ENCR_CENC                 0x0080
 103 #define AR9170_TX_MAC_ENCR_AES                  0x00c0
 104
 105 #define AR9170_TX_MAC_MMIC                      0x0100
 106 #define AR9170_TX_MAC_HW_DURATION               0x0200
 107 #define AR9170_TX_MAC_QOS_S                     10
 108 #define AR9170_TX_MAC_QOS                       0x0c00
 109 #define AR9170_TX_MAC_DISABLE_TXOP              0x1000
 110 #define AR9170_TX_MAC_TXOP_RIFS                 0x2000
 111 #define AR9170_TX_MAC_IMM_BA                    0x4000
 112
 113 /* either-or */
 114 #define AR9170_TX_PHY_MOD_CCK                   0x00000000
 115 #define AR9170_TX_PHY_MOD_OFDM                  0x00000001
 116 #define AR9170_TX_PHY_MOD_HT                    0x00000002
 117
 118 /* depends on modulation */
 119 #define AR9170_TX_PHY_SHORT_PREAMBLE            0x00000004
 120 #define AR9170_TX_PHY_GREENFIELD                0x00000004
 121
 122 #define AR9170_TX_PHY_BW_S                      3
 123 #define AR9170_TX_PHY_BW                        (3 << AR9170_TX_PHY_BW_SHIFT)
 124 #define AR9170_TX_PHY_BW_20MHZ                  0
 125 #define AR9170_TX_PHY_BW_40MHZ                  2
 126 #define AR9170_TX_PHY_BW_40MHZ_DUP              3
 127
 128 #define AR9170_TX_PHY_TX_HEAVY_CLIP_S           6
 129 #define AR9170_TX_PHY_TX_HEAVY_CLIP             (7 << \
 130                                                  AR9170_TX_PHY_TX_HEAVY_CLIP_S)
 131
 132 #define AR9170_TX_PHY_TX_PWR_S                  9
 133 #define AR9170_TX_PHY_TX_PWR                    (0x3f << \
 134                                                  AR9170_TX_PHY_TX_PWR_S)
 135
 136 #define AR9170_TX_PHY_TXCHAIN_S                 15
 137 #define AR9170_TX_PHY_TXCHAIN                   (7 << \
 138                                                  AR9170_TX_PHY_TXCHAIN_S)
 139 #define AR9170_TX_PHY_TXCHAIN_1                 1
 140 /* use for cck, ofdm 6/9/12/18/24 and HT if capable */
 141 #define AR9170_TX_PHY_TXCHAIN_2                 5
 142
 143 #define AR9170_TX_PHY_MCS_S                     18
 144 #define AR9170_TX_PHY_MCS                       (0x7f << \
 145                                                  AR9170_TX_PHY_MCS_S)
 146
 147 #define AR9170_TX_PHY_RATE_CCK_1M               0x0
 148 #define AR9170_TX_PHY_RATE_CCK_2M               0x1
 149 #define AR9170_TX_PHY_RATE_CCK_5M               0x2
 150 #define AR9170_TX_PHY_RATE_CCK_11M              0x3
 151
 152 /* same as AR9170_RX_PHY_RATE */
 153 #define AR9170_TXRX_PHY_RATE_OFDM_6M            0xb
 154 #define AR9170_TXRX_PHY_RATE_OFDM_9M            0xf
 155 #define AR9170_TXRX_PHY_RATE_OFDM_12M           0xa
 156 #define AR9170_TXRX_PHY_RATE_OFDM_18M           0xe
 157 #define AR9170_TXRX_PHY_RATE_OFDM_24M           0x9
 158 #define AR9170_TXRX_PHY_RATE_OFDM_36M           0xd
 159 #define AR9170_TXRX_PHY_RATE_OFDM_48M           0x8
 160 #define AR9170_TXRX_PHY_RATE_OFDM_54M           0xc
 161
 162 #define AR9170_TXRX_PHY_RATE_HT_MCS0            0x0
 163 #define AR9170_TXRX_PHY_RATE_HT_MCS1            0x1
 164 #define AR9170_TXRX_PHY_RATE_HT_MCS2            0x2
 165 #define AR9170_TXRX_PHY_RATE_HT_MCS3            0x3
 166 #define AR9170_TXRX_PHY_RATE_HT_MCS4            0x4
 167 #define AR9170_TXRX_PHY_RATE_HT_MCS5            0x5
 168 #define AR9170_TXRX_PHY_RATE_HT_MCS6            0x6
 169 #define AR9170_TXRX_PHY_RATE_HT_MCS7            0x7
 170 #define AR9170_TXRX_PHY_RATE_HT_MCS8            0x8
 171 #define AR9170_TXRX_PHY_RATE_HT_MCS9            0x9
 172 #define AR9170_TXRX_PHY_RATE_HT_MCS10           0xa
 173 #define AR9170_TXRX_PHY_RATE_HT_MCS11           0xb
 174 #define AR9170_TXRX_PHY_RATE_HT_MCS12           0xc
 175 #define AR9170_TXRX_PHY_RATE_HT_MCS13           0xd
 176 #define AR9170_TXRX_PHY_RATE_HT_MCS14           0xe
 177 #define AR9170_TXRX_PHY_RATE_HT_MCS15           0xf
 178
 179 #define AR9170_TX_PHY_SHORT_GI                  0x80000000
 180
 181 #ifdef __CARL9170FW__
 182 struct ar9170_tx_hw_mac_control {
 183         union {
 184                 struct {
 185                         /*
 186                          * Beware of compiler bugs in all gcc pre 4.4!
 187                          */
 188
 189                         u8 erp_prot:2;
 190                         u8 no_ack:1;
 191                         u8 backoff:1;
 192                         u8 burst:1;
 193                         u8 ampdu:1;
 194
 195                         u8 enc_mode:2;
 196
 197                         u8 hw_mmic:1;
 198                         u8 hw_duration:1;
 199
 200                         u8 qos_queue:2;
 201
 202                         u8 disable_txop:1;
 203                         u8 txop_rifs:1;
 204
 205                         u8 ba_end:1;
 206                         u8 probe:1;
 207                 } __packed;
 208
 209                 __le16 set;
 210         } __packed;
 211 } __packed;
 212
 213 struct ar9170_tx_hw_phy_control {
 214         union {
 215                 struct {
 216                         /*
 217                          * Beware of compiler bugs in all gcc pre 4.4!
 218                          */
 219
 220                         u8 modulation:2;
 221                         u8 preamble:1;
 222                         u8 bandwidth:2;
 223                         u8:1;
 224                         u8 heavy_clip:3;
 225                         u8 tx_power:6;
 226                         u8 chains:3;
 227                         u8 mcs:7;
 228                         u8:6;
 229                         u8 short_gi:1;
 230                 } __packed;
 231
 232                 __le32 set;
 233         } __packed;
 234 } __packed;
 235
 236 struct ar9170_tx_rate_info {
 237         u8 tries:3;
 238         u8 erp_prot:2;
 239         u8 ampdu:1;
 240         u8 free:2; /* free for use (e.g.:RIFS/TXOP/AMPDU) */
 241 } __packed;
 242
 243 struct carl9170_tx_superdesc {
 244         __le16 len;
 245         u8 rix;
 246         u8 cnt;
 247         u8 cookie;
 248         u8 ampdu_density:3;
 249         u8 ampdu_factor:2;
 250         u8 ampdu_commit_density:1;
 251         u8 ampdu_commit_factor:1;
 252         u8 ampdu_unused_bit:1;
 253         u8 queue:2;
 254         u8 assign_seq:1;
 255         u8 vif_id:3;
 256         u8 fill_in_tsf:1;
 257         u8 cab:1;
 258         u8 padding2;
 259         struct ar9170_tx_rate_info ri[CARL9170_TX_MAX_RATES];
 260         struct ar9170_tx_hw_phy_control rr[CARL9170_TX_MAX_RETRY_RATES];
 261 } __packed;
 262
 263 struct ar9170_tx_hwdesc {
 264         __le16 length;
 265         struct ar9170_tx_hw_mac_control mac;
 266         struct ar9170_tx_hw_phy_control phy;
 267 } __packed;
 268
 269 struct ar9170_tx_frame {
 270         struct ar9170_tx_hwdesc hdr;
 271
 272         union {
 273                 struct ieee80211_hdr i3e;
 274                 u8 payload[0];
 275         } data;
 276 } __packed;
 277
 278 struct carl9170_tx_superframe {
 279         struct carl9170_tx_superdesc s;
 280         struct ar9170_tx_frame f;
 281 } __packed __aligned(4);
 282
 283 #endif /* __CARL9170FW__ */
 284
 285 struct _ar9170_tx_hwdesc {
 286         __le16 length;
 287         __le16 mac_control;
 288         __le32 phy_control;
 289 } __packed;
 290
 291 #define CARL9170_TX_SUPER_AMPDU_DENSITY_S               0
 292 #define CARL9170_TX_SUPER_AMPDU_DENSITY                 0x7
 293 #define CARL9170_TX_SUPER_AMPDU_FACTOR                  0x18
 294 #define CARL9170_TX_SUPER_AMPDU_FACTOR_S                3
 295 #define CARL9170_TX_SUPER_AMPDU_COMMIT_DENSITY          0x20
 296 #define CARL9170_TX_SUPER_AMPDU_COMMIT_DENSITY_S        5
 297 #define CARL9170_TX_SUPER_AMPDU_COMMIT_FACTOR           0x40
 298 #define CARL9170_TX_SUPER_AMPDU_COMMIT_FACTOR_S         6
 299
 300 #define CARL9170_TX_SUPER_MISC_QUEUE                    0x3
 301 #define CARL9170_TX_SUPER_MISC_QUEUE_S                  0
 302 #define CARL9170_TX_SUPER_MISC_ASSIGN_SEQ               0x4
 303 #define CARL9170_TX_SUPER_MISC_VIF_ID                   0x38
 304 #define CARL9170_TX_SUPER_MISC_VIF_ID_S                 3
 305 #define CARL9170_TX_SUPER_MISC_FILL_IN_TSF              0x40
 306 #define CARL9170_TX_SUPER_MISC_CAB                      0x80
 307
 308 #define CARL9170_TX_SUPER_RI_TRIES                      0x7
 309 #define CARL9170_TX_SUPER_RI_TRIES_S                    0
 310 #define CARL9170_TX_SUPER_RI_ERP_PROT                   0x18
 311 #define CARL9170_TX_SUPER_RI_ERP_PROT_S                 3
 312 #define CARL9170_TX_SUPER_RI_AMPDU                      0x20
 313 #define CARL9170_TX_SUPER_RI_AMPDU_S                    5
 314
 315 struct _carl9170_tx_superdesc {
 316         __le16 len;
 317         u8 rix;
 318         u8 cnt;
 319         u8 cookie;
 320         u8 ampdu_settings;
 321         u8 misc;
 322         u8 padding;
 323         u8 ri[CARL9170_TX_MAX_RATES];
 324         __le32 rr[CARL9170_TX_MAX_RETRY_RATES];
 325 } __packed;
 326
 327 struct _carl9170_tx_superframe {
 328         struct _carl9170_tx_superdesc s;
 329         struct _ar9170_tx_hwdesc f;
 330         u8 frame_data[0];
 331 } __packed __aligned(4);
 332
 333 #define CARL9170_TX_SUPERDESC_LEN               24
 334 #define AR9170_TX_HWDESC_LEN                    8
 335 #define CARL9170_TX_SUPERFRAME_LEN              (CARL9170_TX_SUPERDESC_LEN + \
 336                                                  AR9170_TX_HWDESC_LEN)
 337
 338 struct ar9170_rx_head {
 339         u8 plcp[12];
 340 } __packed;
 341
 342 #define AR9170_RX_HEAD_LEN                      12
 343
 344 struct ar9170_rx_phystatus {
 345         union {
 346                 struct {
 347                         u8 rssi_ant0, rssi_ant1, rssi_ant2,
 348                                 rssi_ant0x, rssi_ant1x, rssi_ant2x,
 349                                 rssi_combined;
 350                 } __packed;
 351                 u8 rssi[7];
 352         } __packed;
 353
 354         u8 evm_stream0[6], evm_stream1[6];
 355         u8 phy_err;
 356 } __packed;
 357
 358 #define AR9170_RX_PHYSTATUS_LEN                 20
 359
 360 struct ar9170_rx_macstatus {
 361         u8 SAidx, DAidx;
 362         u8 error;
 363         u8 status;
 364 } __packed;
 365
 366 #define AR9170_RX_MACSTATUS_LEN                 4
 367
 368 struct ar9170_rx_frame_single {
 369         struct ar9170_rx_head phy_head;
 370         struct ieee80211_hdr i3e;
 371         struct ar9170_rx_phystatus phy_tail;
 372         struct ar9170_rx_macstatus macstatus;
 373 } __packed;
 374
 375 struct ar9170_rx_frame_head {
 376         struct ar9170_rx_head phy_head;
 377         struct ieee80211_hdr i3e;
 378         struct ar9170_rx_macstatus macstatus;
 379 } __packed;
 380
 381 struct ar9170_rx_frame_middle {
 382         struct ieee80211_hdr i3e;
 383         struct ar9170_rx_macstatus macstatus;
 384 } __packed;
 385
 386 struct ar9170_rx_frame_tail {
 387         struct ieee80211_hdr i3e;
 388         struct ar9170_rx_phystatus phy_tail;
 389         struct ar9170_rx_macstatus macstatus;
 390 } __packed;
 391
 392 struct ar9170_rx_frame {
 393         union {
 394                 struct ar9170_rx_frame_single single;
 395                 struct ar9170_rx_frame_head head;
 396                 struct ar9170_rx_frame_middle middle;
 397                 struct ar9170_rx_frame_tail tail;
 398         } __packed;
 399 } __packed;
 400
 401 static inline u8 ar9170_get_decrypt_type(struct ar9170_rx_macstatus *t)
 402 {
 403         return (t->SAidx & 0xc0) >> 4 |
 404                (t->DAidx & 0xc0) >> 6;
 405 }
 406
 407 /*
 408  * This is an workaround for several undocumented bugs.
 409  * Don't mess with the QoS/AC <-> HW Queue map, if you don't
 410  * know what you are doing.
 411  *
 412  * Known problems [hardware]:
 413  *  * The MAC does not aggregate frames on anything other
 414  *    than the first HW queue.
 415  *  * when an AMPDU is placed [in the first hw queue] and
 416  *    additional frames are already queued on a different
 417  *    hw queue, the MAC will ALWAYS freeze.
 418  *
 419  * In a nutshell: The hardware can either do QoS or
 420  * Aggregation but not both at the same time. As a
 421  * result, this makes the device pretty much useless
 422  * for any serious 802.11n setup.
 423  */
 424 enum ar9170_txq {
 425         AR9170_TXQ_BK = 0,      /* TXQ0 */
 426         AR9170_TXQ_BE,          /* TXQ1 */
 427         AR9170_TXQ_VI,          /* TXQ2 */
 428         AR9170_TXQ_VO,          /* TXQ3 */
 429
 430         __AR9170_NUM_TXQ,
 431 };
 432
 433 #define AR9170_TXQ_DEPTH                        32
 434
 435 #endif /* __CARL9170_SHARED_WLAN_H */