drivers/net/wireless/b43/xmit.h

   1 #ifndef B43_XMIT_H_
   2 #define B43_XMIT_H_
   3
   4 #include "main.h"
   5 #include <net/mac80211.h>
   6
   7
   8 #define _b43_declare_plcp_hdr(size) \
   9         struct b43_plcp_hdr##size {             \
  10                 union {                         \
  11                         __le32 data;            \
  12                         __u8 raw[size];         \
  13                 } __packed;     \
  14         } __packed
  15
  16 /* struct b43_plcp_hdr4 */
  17 _b43_declare_plcp_hdr(4);
  18 /* struct b43_plcp_hdr6 */
  19 _b43_declare_plcp_hdr(6);
  20
  21 #undef _b43_declare_plcp_hdr
  22
  23 /* TX header for v4 firmware */
  24 struct b43_txhdr {
  25         __le32 mac_ctl;                 /* MAC TX control */
  26         __le16 mac_frame_ctl;           /* Copy of the FrameControl field */
  27         __le16 tx_fes_time_norm;        /* TX FES Time Normal */
  28         __le16 phy_ctl;                 /* PHY TX control */
  29         __le16 phy_ctl1;                /* PHY TX control word 1 */
  30         __le16 phy_ctl1_fb;             /* PHY TX control word 1 for fallback rates */
  31         __le16 phy_ctl1_rts;            /* PHY TX control word 1 RTS */
  32         __le16 phy_ctl1_rts_fb;         /* PHY TX control word 1 RTS for fallback rates */
  33         __u8 phy_rate;                  /* PHY rate */
  34         __u8 phy_rate_rts;              /* PHY rate for RTS/CTS */
  35         __u8 extra_ft;                  /* Extra Frame Types */
  36         __u8 chan_radio_code;           /* Channel Radio Code */
  37         __u8 iv[16];                    /* Encryption IV */
  38         __u8 tx_receiver[6];            /* TX Frame Receiver address */
  39         __le16 tx_fes_time_fb;          /* TX FES Time Fallback */
  40         struct b43_plcp_hdr6 rts_plcp_fb; /* RTS fallback PLCP header */
  41         __le16 rts_dur_fb;              /* RTS fallback duration */
  42         struct b43_plcp_hdr6 plcp_fb;   /* Fallback PLCP header */
  43         __le16 dur_fb;                  /* Fallback duration */
  44         __le16 mimo_modelen;            /* MIMO mode length */
  45         __le16 mimo_ratelen_fb;         /* MIMO fallback rate length */
  46         __le32 timeout;                 /* Timeout */
  47
  48         union {
  49                 /* Tested with 598.314, 644.1001 and 666.2 */
  50                 struct {
  51                         __le16 mimo_antenna;            /* MIMO antenna select */
  52                         __le16 preload_size;            /* Preload size */
  53                         PAD_BYTES(2);
  54                         __le16 cookie;                  /* TX frame cookie */
  55                         __le16 tx_status;               /* TX status */
  56                         __le16 max_n_mpdus;
  57                         __le16 max_a_bytes_mrt;
  58                         __le16 max_a_bytes_fbr;
  59                         __le16 min_m_bytes;
  60                         struct b43_plcp_hdr6 rts_plcp;  /* RTS PLCP header */
  61                         __u8 rts_frame[16];             /* The RTS frame (if used) */
  62                         PAD_BYTES(2);
  63                         struct b43_plcp_hdr6 plcp;      /* Main PLCP header */
  64                 } format_598 __packed;
  65
  66                 /* Tested with 410.2160, 478.104 and 508.* */
  67                 struct {
  68                         __le16 mimo_antenna;            /* MIMO antenna select */
  69                         __le16 preload_size;            /* Preload size */
  70                         PAD_BYTES(2);
  71                         __le16 cookie;                  /* TX frame cookie */
  72                         __le16 tx_status;               /* TX status */
  73                         struct b43_plcp_hdr6 rts_plcp;  /* RTS PLCP header */
  74                         __u8 rts_frame[16];             /* The RTS frame (if used) */
  75                         PAD_BYTES(2);
  76                         struct b43_plcp_hdr6 plcp;      /* Main PLCP header */
  77                 } format_410 __packed;
  78
  79                 /* Tested with 351.126 */
  80                 struct {
  81                         PAD_BYTES(2);
  82                         __le16 cookie;                  /* TX frame cookie */
  83                         __le16 tx_status;               /* TX status */
  84                         struct b43_plcp_hdr6 rts_plcp;  /* RTS PLCP header */
  85                         __u8 rts_frame[16];             /* The RTS frame (if used) */
  86                         PAD_BYTES(2);
  87                         struct b43_plcp_hdr6 plcp;      /* Main PLCP header */
  88                 } format_351 __packed;
  89
  90         } __packed;
  91 } __packed;
  92
  93 struct b43_tx_legacy_rate_phy_ctl_entry {
  94         u8 bitrate;
  95         u16 coding_rate;
  96         u16 modulation;
  97 };
  98
  99 /* MAC TX control */
 100 #define B43_TXH_MAC_USEFBR              0x10000000 /* Use fallback rate for this AMPDU */
 101 #define B43_TXH_MAC_KEYIDX              0x0FF00000 /* Security key index */
 102 #define B43_TXH_MAC_KEYIDX_SHIFT        20
 103 #define B43_TXH_MAC_KEYALG              0x00070000 /* Security key algorithm */
 104 #define B43_TXH_MAC_KEYALG_SHIFT        16
 105 #define B43_TXH_MAC_AMIC                0x00008000 /* AMIC */
 106 #define B43_TXH_MAC_RIFS                0x00004000 /* Use RIFS */
 107 #define B43_TXH_MAC_LIFETIME            0x00002000 /* Lifetime */
 108 #define B43_TXH_MAC_FRAMEBURST          0x00001000 /* Frameburst */
 109 #define B43_TXH_MAC_SENDCTS             0x00000800 /* Send CTS-to-self */
 110 #define B43_TXH_MAC_AMPDU               0x00000600 /* AMPDU status */
 111 #define  B43_TXH_MAC_AMPDU_MPDU         0x00000000 /* Regular MPDU, not an AMPDU */
 112 #define  B43_TXH_MAC_AMPDU_FIRST        0x00000200 /* First MPDU or AMPDU */
 113 #define  B43_TXH_MAC_AMPDU_INTER        0x00000400 /* Intermediate MPDU or AMPDU */
 114 #define  B43_TXH_MAC_AMPDU_LAST         0x00000600 /* Last (or only) MPDU of AMPDU */
 115 #define B43_TXH_MAC_40MHZ               0x00000100 /* Use 40 MHz bandwidth */
 116 #define B43_TXH_MAC_5GHZ                0x00000080 /* 5GHz band */
 117 #define B43_TXH_MAC_DFCS                0x00000040 /* DFCS */
 118 #define B43_TXH_MAC_IGNPMQ              0x00000020 /* Ignore PMQ */
 119 #define B43_TXH_MAC_HWSEQ               0x00000010 /* Use Hardware Sequence Number */
 120 #define B43_TXH_MAC_STMSDU              0x00000008 /* Start MSDU */
 121 #define B43_TXH_MAC_SENDRTS             0x00000004 /* Send RTS */
 122 #define B43_TXH_MAC_LONGFRAME           0x00000002 /* Long frame */
 123 #define B43_TXH_MAC_ACK                 0x00000001 /* Immediate ACK */
 124
 125 /* Extra Frame Types */
 126 #define B43_TXH_EFT_FB                  0x03 /* Data frame fallback encoding */
 127 #define  B43_TXH_EFT_FB_CCK             0x00 /* CCK */
 128 #define  B43_TXH_EFT_FB_OFDM            0x01 /* OFDM */
 129 #define  B43_TXH_EFT_FB_EWC             0x02 /* EWC */
 130 #define  B43_TXH_EFT_FB_N               0x03 /* N */
 131 #define B43_TXH_EFT_RTS                 0x0C /* RTS/CTS encoding */
 132 #define  B43_TXH_EFT_RTS_CCK            0x00 /* CCK */
 133 #define  B43_TXH_EFT_RTS_OFDM           0x04 /* OFDM */
 134 #define  B43_TXH_EFT_RTS_EWC            0x08 /* EWC */
 135 #define  B43_TXH_EFT_RTS_N              0x0C /* N */
 136 #define B43_TXH_EFT_RTSFB               0x30 /* RTS/CTS fallback encoding */
 137 #define  B43_TXH_EFT_RTSFB_CCK          0x00 /* CCK */
 138 #define  B43_TXH_EFT_RTSFB_OFDM         0x10 /* OFDM */
 139 #define  B43_TXH_EFT_RTSFB_EWC          0x20 /* EWC */
 140 #define  B43_TXH_EFT_RTSFB_N            0x30 /* N */
 141
 142 /* PHY TX control word */
 143 #define B43_TXH_PHY_ENC                 0x0003 /* Data frame encoding */
 144 #define  B43_TXH_PHY_ENC_CCK            0x0000 /* CCK */
 145 #define  B43_TXH_PHY_ENC_OFDM           0x0001 /* OFDM */
 146 #define  B43_TXH_PHY_ENC_EWC            0x0002 /* EWC */
 147 #define  B43_TXH_PHY_ENC_N              0x0003 /* N */
 148 #define B43_TXH_PHY_SHORTPRMBL          0x0010 /* Use short preamble */
 149 #define B43_TXH_PHY_ANT                 0x03C0 /* Antenna selection */
 150 #define  B43_TXH_PHY_ANT0               0x0000 /* Use antenna 0 */
 151 #define  B43_TXH_PHY_ANT1               0x0040 /* Use antenna 1 */
 152 #define  B43_TXH_PHY_ANT01AUTO          0x00C0 /* Use antenna 0/1 auto */
 153 #define  B43_TXH_PHY_ANT2               0x0100 /* Use antenna 2 */
 154 #define  B43_TXH_PHY_ANT3               0x0200 /* Use antenna 3 */
 155 #define B43_TXH_PHY_TXPWR               0xFC00 /* TX power */
 156 #define B43_TXH_PHY_TXPWR_SHIFT         10
 157
 158 /* PHY TX control word 1 */
 159 #define B43_TXH_PHY1_BW                 0x0007 /* Bandwidth */
 160 #define  B43_TXH_PHY1_BW_10             0x0000 /* 10 MHz */
 161 #define  B43_TXH_PHY1_BW_10U            0x0001 /* 10 MHz upper */
 162 #define  B43_TXH_PHY1_BW_20             0x0002 /* 20 MHz */
 163 #define  B43_TXH_PHY1_BW_20U            0x0003 /* 20 MHz upper */
 164 #define  B43_TXH_PHY1_BW_40             0x0004 /* 40 MHz */
 165 #define  B43_TXH_PHY1_BW_40DUP          0x0005 /* 50 MHz duplicate */
 166 #define B43_TXH_PHY1_MODE               0x0038 /* Mode */
 167 #define  B43_TXH_PHY1_MODE_SISO         0x0000 /* SISO */
 168 #define  B43_TXH_PHY1_MODE_CDD          0x0008 /* CDD */
 169 #define  B43_TXH_PHY1_MODE_STBC         0x0010 /* STBC */
 170 #define  B43_TXH_PHY1_MODE_SDM          0x0018 /* SDM */
 171 #define B43_TXH_PHY1_CRATE              0x0700 /* Coding rate */
 172 #define  B43_TXH_PHY1_CRATE_1_2         0x0000 /* 1/2 */
 173 #define  B43_TXH_PHY1_CRATE_2_3         0x0100 /* 2/3 */
 174 #define  B43_TXH_PHY1_CRATE_3_4         0x0200 /* 3/4 */
 175 #define  B43_TXH_PHY1_CRATE_4_5         0x0300 /* 4/5 */
 176 #define  B43_TXH_PHY1_CRATE_5_6         0x0400 /* 5/6 */
 177 #define  B43_TXH_PHY1_CRATE_7_8         0x0600 /* 7/8 */
 178 #define B43_TXH_PHY1_MODUL              0x3800 /* Modulation scheme */
 179 #define  B43_TXH_PHY1_MODUL_BPSK        0x0000 /* BPSK */
 180 #define  B43_TXH_PHY1_MODUL_QPSK        0x0800 /* QPSK */
 181 #define  B43_TXH_PHY1_MODUL_QAM16       0x1000 /* QAM16 */
 182 #define  B43_TXH_PHY1_MODUL_QAM64       0x1800 /* QAM64 */
 183 #define  B43_TXH_PHY1_MODUL_QAM256      0x2000 /* QAM256 */
 184
 185
 186 static inline
 187 size_t b43_txhdr_size(struct b43_wldev *dev)
 188 {
 189         switch (dev->fw.hdr_format) {
 190         case B43_FW_HDR_598:
 191                 return 112 + sizeof(struct b43_plcp_hdr6);
 192         case B43_FW_HDR_410:
 193                 return 104 + sizeof(struct b43_plcp_hdr6);
 194         case B43_FW_HDR_351:
 195                 return 100 + sizeof(struct b43_plcp_hdr6);
 196         }
 197         return 0;
 198 }
 199
 200
 201 int b43_generate_txhdr(struct b43_wldev *dev,
 202                        u8 * txhdr,
 203                        struct sk_buff *skb_frag,
 204                        struct ieee80211_tx_info *txctl, u16 cookie);
 205
 206 /* Transmit Status */
 207 struct b43_txstatus {
 208         u16 cookie;             /* The cookie from the txhdr */
 209         u16 seq;                /* Sequence number */
 210         u8 phy_stat;            /* PHY TX status */
 211         u8 frame_count;         /* Frame transmit count */
 212         u8 rts_count;           /* RTS transmit count */
 213         u8 supp_reason;         /* Suppression reason */
 214         /* flags */
 215         u8 pm_indicated;        /* PM mode indicated to AP */
 216         u8 intermediate;        /* Intermediate status notification (not final) */
 217         u8 for_ampdu;           /* Status is for an AMPDU (afterburner) */
 218         u8 acked;               /* Wireless ACK received */
 219 };
 220
 221 /* txstatus supp_reason values */
 222 enum {
 223         B43_TXST_SUPP_NONE,     /* Not suppressed */
 224         B43_TXST_SUPP_PMQ,      /* Suppressed due to PMQ entry */
 225         B43_TXST_SUPP_FLUSH,    /* Suppressed due to flush request */
 226         B43_TXST_SUPP_PREV,     /* Previous fragment failed */
 227         B43_TXST_SUPP_CHAN,     /* Channel mismatch */
 228         B43_TXST_SUPP_LIFE,     /* Lifetime expired */
 229         B43_TXST_SUPP_UNDER,    /* Buffer underflow */
 230         B43_TXST_SUPP_ABNACK,   /* Afterburner NACK */
 231 };
 232
 233 /* Receive header for v4 firmware. */
 234 struct b43_rxhdr_fw4 {
 235         __le16 frame_len;       /* Frame length */
 236          PAD_BYTES(2);
 237         __le16 phy_status0;     /* PHY RX Status 0 */
 238         union {
 239                 /* RSSI for A/B/G-PHYs */
 240                 struct {
 241                         __u8 jssi;      /* PHY RX Status 1: JSSI */
 242                         __u8 sig_qual;  /* PHY RX Status 1: Signal Quality */
 243                 } __packed;
 244
 245                 /* RSSI for N-PHYs */
 246                 struct {
 247                         __s8 power0;    /* PHY RX Status 1: Power 0 */
 248                         __s8 power1;    /* PHY RX Status 1: Power 1 */
 249                 } __packed;
 250         } __packed;
 251         union {
 252                 /* HT-PHY */
 253                 struct {
 254                         PAD_BYTES(1);
 255                         __s8 phy_ht_power0;
 256                 } __packed;
 257
 258                 /* RSSI for N-PHYs */
 259                 struct {
 260                         __s8 power2;
 261                         PAD_BYTES(1);
 262                 } __packed;
 263
 264                 __le16 phy_status2;     /* PHY RX Status 2 */
 265         } __packed;
 266         union {
 267                 /* HT-PHY */
 268                 struct {
 269                         __s8 phy_ht_power1;
 270                         __s8 phy_ht_power2;
 271                 } __packed;
 272
 273                 __le16 phy_status3;     /* PHY RX Status 3 */
 274         } __packed;
 275         union {
 276                 /* Tested with 598.314, 644.1001 and 666.2 */
 277                 struct {
 278                         __le16 phy_status4;     /* PHY RX Status 4 */
 279                         __le16 phy_status5;     /* PHY RX Status 5 */
 280                         __le32 mac_status;      /* MAC RX status */
 281                         __le16 mac_time;
 282                         __le16 channel;
 283                 } format_598 __packed;
 284
 285                 /* Tested with 351.126, 410.2160, 478.104 and 508.* */
 286                 struct {
 287                         __le32 mac_status;      /* MAC RX status */
 288                         __le16 mac_time;
 289                         __le16 channel;
 290                 } format_351 __packed;
 291         } __packed;
 292 } __packed;
 293
 294 /* PHY RX Status 0 */
 295 #define B43_RX_PHYST0_GAINCTL           0x4000 /* Gain Control */
 296 #define B43_RX_PHYST0_PLCPHCF           0x0200
 297 #define B43_RX_PHYST0_PLCPFV            0x0100
 298 #define B43_RX_PHYST0_SHORTPRMBL        0x0080 /* Received with Short Preamble */
 299 #define B43_RX_PHYST0_LCRS              0x0040
 300 #define B43_RX_PHYST0_ANT               0x0020 /* Antenna */
 301 #define B43_RX_PHYST0_UNSRATE           0x0010
 302 #define B43_RX_PHYST0_CLIP              0x000C
 303 #define B43_RX_PHYST0_CLIP_SHIFT        2
 304 #define B43_RX_PHYST0_FTYPE             0x0003 /* Frame type */
 305 #define  B43_RX_PHYST0_CCK              0x0000 /* Frame type: CCK */
 306 #define  B43_RX_PHYST0_OFDM             0x0001 /* Frame type: OFDM */
 307 #define  B43_RX_PHYST0_PRE_N            0x0002 /* Pre-standard N-PHY frame */
 308 #define  B43_RX_PHYST0_STD_N            0x0003 /* Standard N-PHY frame */
 309
 310 /* PHY RX Status 2 */
 311 #define B43_RX_PHYST2_LNAG              0xC000 /* LNA Gain */
 312 #define B43_RX_PHYST2_LNAG_SHIFT        14
 313 #define B43_RX_PHYST2_PNAG              0x3C00 /* PNA Gain */
 314 #define B43_RX_PHYST2_PNAG_SHIFT        10
 315 #define B43_RX_PHYST2_FOFF              0x03FF /* F offset */
 316
 317 /* PHY RX Status 3 */
 318 #define B43_RX_PHYST3_DIGG              0x1800 /* DIG Gain */
 319 #define B43_RX_PHYST3_DIGG_SHIFT        11
 320 #define B43_RX_PHYST3_TRSTATE           0x0400 /* TR state */
 321
 322 /* MAC RX Status */
 323 #define B43_RX_MAC_RXST_VALID           0x01000000 /* PHY RXST valid */
 324 #define B43_RX_MAC_TKIP_MICERR          0x00100000 /* TKIP MIC error */
 325 #define B43_RX_MAC_TKIP_MICATT          0x00080000 /* TKIP MIC attempted */
 326 #define B43_RX_MAC_AGGTYPE              0x00060000 /* Aggregation type */
 327 #define B43_RX_MAC_AGGTYPE_SHIFT        17
 328 #define B43_RX_MAC_AMSDU                0x00010000 /* A-MSDU mask */
 329 #define B43_RX_MAC_BEACONSENT           0x00008000 /* Beacon sent flag */
 330 #define B43_RX_MAC_KEYIDX               0x000007E0 /* Key index */
 331 #define B43_RX_MAC_KEYIDX_SHIFT         5
 332 #define B43_RX_MAC_DECERR               0x00000010 /* Decrypt error */
 333 #define B43_RX_MAC_DEC                  0x00000008 /* Decryption attempted */
 334 #define B43_RX_MAC_PADDING              0x00000004 /* Pad bytes present */
 335 #define B43_RX_MAC_RESP                 0x00000002 /* Response frame transmitted */
 336 #define B43_RX_MAC_FCSERR               0x00000001 /* FCS error */
 337
 338 /* RX channel */
 339 #define B43_RX_CHAN_40MHZ               0x1000 /* 40 Mhz channel width */
 340 #define B43_RX_CHAN_5GHZ                0x0800 /* 5 Ghz band */
 341 #define B43_RX_CHAN_ID                  0x07F8 /* Channel ID */
 342 #define B43_RX_CHAN_ID_SHIFT            3
 343 #define B43_RX_CHAN_PHYTYPE             0x0007 /* PHY type */
 344
 345
 346 u8 b43_plcp_get_ratecode_cck(const u8 bitrate);
 347 u8 b43_plcp_get_ratecode_ofdm(const u8 bitrate);
 348
 349 void b43_generate_plcp_hdr(struct b43_plcp_hdr4 *plcp,
 350                            const u16 octets, const u8 bitrate);
 351
 352 void b43_rx(struct b43_wldev *dev, struct sk_buff *skb, const void *_rxhdr);
 353
 354 void b43_handle_txstatus(struct b43_wldev *dev,
 355                          const struct b43_txstatus *status);
 356 bool b43_fill_txstatus_report(struct b43_wldev *dev,
 357                               struct ieee80211_tx_info *report,
 358                               const struct b43_txstatus *status);
 359
 360 void b43_tx_suspend(struct b43_wldev *dev);
 361 void b43_tx_resume(struct b43_wldev *dev);
 362
 363
 364 /* Helper functions for converting the key-table index from "firmware-format"
 365  * to "raw-format" and back. The firmware API changed for this at some revision.
 366  * We need to account for that here. */
 367 static inline int b43_new_kidx_api(struct b43_wldev *dev)
 368 {
 369         /* FIXME: Not sure the change was at rev 351 */
 370         return (dev->fw.rev >= 351);
 371 }
 372 static inline u8 b43_kidx_to_fw(struct b43_wldev *dev, u8 raw_kidx)
 373 {
 374         u8 firmware_kidx;
 375         if (b43_new_kidx_api(dev)) {
 376                 firmware_kidx = raw_kidx;
 377         } else {
 378                 if (raw_kidx >= 4)      /* Is per STA key? */
 379                         firmware_kidx = raw_kidx - 4;
 380                 else
 381                         firmware_kidx = raw_kidx;       /* TX default key */
 382         }
 383         return firmware_kidx;
 384 }
 385 static inline u8 b43_kidx_to_raw(struct b43_wldev *dev, u8 firmware_kidx)
 386 {
 387         u8 raw_kidx;
 388         if (b43_new_kidx_api(dev))
 389                 raw_kidx = firmware_kidx;
 390         else
 391                 raw_kidx = firmware_kidx + 4;   /* RX default keys or per STA keys */
 392         return raw_kidx;
 393 }
 394
 395 /* struct b43_private_tx_info - TX info private to b43.
 396  * The structure is placed in (struct ieee80211_tx_info *)->rate_driver_data
 397  *
 398  * @bouncebuffer: DMA Bouncebuffer (if used)
 399  */
 400 struct b43_private_tx_info {
 401         void *bouncebuffer;
 402 };
 403
 404 static inline struct b43_private_tx_info *
 405 b43_get_priv_tx_info(struct ieee80211_tx_info *info)
 406 {
 407         BUILD_BUG_ON(sizeof(struct b43_private_tx_info) >
 408                      sizeof(info->rate_driver_data));
 409         return (struct b43_private_tx_info *)info->rate_driver_data;
 410 }
 411
 412 #endif /* B43_XMIT_H_ */