drivers/net/wireless/b43/xmit.h

   1 #ifndef B43_XMIT_H_
   2 #define B43_XMIT_H_
   3
   4 #include "main.h"
   5
   6 #define _b43_declare_plcp_hdr(size) \
   7         struct b43_plcp_hdr##size {             \
   8                 union {                         \
   9                         __le32 data;            \
  10                         __u8 raw[size];         \
  11                 } __attribute__((__packed__));  \
  12         } __attribute__((__packed__))
  13
  14 /* struct b43_plcp_hdr4 */
  15 _b43_declare_plcp_hdr(4);
  16 /* struct b43_plcp_hdr6 */
  17 _b43_declare_plcp_hdr(6);
  18
  19 #undef _b43_declare_plcp_hdr
  20
  21 /* TX header for v4 firmware */
  22 struct b43_txhdr_fw4 {
  23         __le32 mac_ctl;         /* MAC TX control */
  24         __le16 mac_frame_ctl;   /* Copy of the FrameControl field */
  25         __le16 tx_fes_time_norm;        /* TX FES Time Normal */
  26         __le16 phy_ctl;         /* PHY TX control */
  27         __le16 phy_ctl_0;       /* Unused */
  28         __le16 phy_ctl_1;       /* Unused */
  29         __le16 phy_ctl_rts_0;   /* Unused */
  30         __le16 phy_ctl_rts_1;   /* Unused */
  31         __u8 phy_rate;          /* PHY rate */
  32         __u8 phy_rate_rts;      /* PHY rate for RTS/CTS */
  33         __u8 extra_ft;          /* Extra Frame Types */
  34         __u8 chan_radio_code;   /* Channel Radio Code */
  35         __u8 iv[16];            /* Encryption IV */
  36         __u8 tx_receiver[6];    /* TX Frame Receiver address */
  37         __le16 tx_fes_time_fb;  /* TX FES Time Fallback */
  38         struct b43_plcp_hdr6 rts_plcp_fb;       /* RTS fallback PLCP */
  39         __le16 rts_dur_fb;      /* RTS fallback duration */
  40         struct b43_plcp_hdr6 plcp_fb;   /* Fallback PLCP */
  41         __le16 dur_fb;          /* Fallback duration */
  42         __le16 mm_dur_time;     /* Unused */
  43         __le16 mm_dur_time_fb;  /* Unused */
  44         __le32 time_stamp;      /* Timestamp */
  45          PAD_BYTES(2);
  46         __le16 cookie;          /* TX frame cookie */
  47         __le16 tx_status;       /* TX status */
  48         struct b43_plcp_hdr6 rts_plcp;  /* RTS PLCP */
  49         __u8 rts_frame[16];     /* The RTS frame (if used) */
  50          PAD_BYTES(2);
  51         struct b43_plcp_hdr6 plcp;      /* Main PLCP */
  52 } __attribute__ ((__packed__));
  53
  54 /* MAC TX control */
  55 #define B43_TX4_MAC_KEYIDX              0x0FF00000      /* Security key index */
  56 #define B43_TX4_MAC_KEYIDX_SHIFT        20
  57 #define B43_TX4_MAC_KEYALG              0x00070000      /* Security key algorithm */
  58 #define B43_TX4_MAC_KEYALG_SHIFT        16
  59 #define B43_TX4_MAC_LIFETIME    0x00001000
  60 #define B43_TX4_MAC_FRAMEBURST  0x00000800
  61 #define B43_TX4_MAC_SENDCTS             0x00000400
  62 #define B43_TX4_MAC_AMPDU               0x00000300
  63 #define B43_TX4_MAC_AMPDU_SHIFT 8
  64 #define B43_TX4_MAC_5GHZ                0x00000080
  65 #define B43_TX4_MAC_IGNPMQ              0x00000020
  66 #define B43_TX4_MAC_HWSEQ               0x00000010      /* Use Hardware Sequence Number */
  67 #define B43_TX4_MAC_STMSDU              0x00000008      /* Start MSDU */
  68 #define B43_TX4_MAC_SENDRTS             0x00000004
  69 #define B43_TX4_MAC_LONGFRAME   0x00000002
  70 #define B43_TX4_MAC_ACK         0x00000001
  71
  72 /* Extra Frame Types */
  73 #define B43_TX4_EFT_FBOFDM              0x0001  /* Data frame fallback rate type */
  74 #define B43_TX4_EFT_RTSOFDM             0x0004  /* RTS/CTS rate type */
  75 #define B43_TX4_EFT_RTSFBOFDM   0x0010  /* RTS/CTS fallback rate type */
  76
  77 /* PHY TX control word */
  78 #define B43_TX4_PHY_OFDM                0x0001  /* Data frame rate type */
  79 #define B43_TX4_PHY_SHORTPRMBL  0x0010  /* Use short preamble */
  80 #define B43_TX4_PHY_ANT         0x03C0  /* Antenna selection */
  81 #define  B43_TX4_PHY_ANT0               0x0000  /* Use antenna 0 */
  82 #define  B43_TX4_PHY_ANT1               0x0100  /* Use antenna 1 */
  83 #define  B43_TX4_PHY_ANTLAST    0x0300  /* Use last used antenna */
  84
  85 void b43_generate_txhdr(struct b43_wldev *dev,
  86                         u8 * txhdr,
  87                         const unsigned char *fragment_data,
  88                         unsigned int fragment_len,
  89                         const struct ieee80211_tx_control *txctl, u16 cookie);
  90
  91 /* Transmit Status */
  92 struct b43_txstatus {
  93         u16 cookie;             /* The cookie from the txhdr */
  94         u16 seq;                /* Sequence number */
  95         u8 phy_stat;            /* PHY TX status */
  96         u8 frame_count;         /* Frame transmit count */
  97         u8 rts_count;           /* RTS transmit count */
  98         u8 supp_reason;         /* Suppression reason */
  99         /* flags */
 100         u8 pm_indicated;        /* PM mode indicated to AP */
 101         u8 intermediate;        /* Intermediate status notification (not final) */
 102         u8 for_ampdu;           /* Status is for an AMPDU (afterburner) */
 103         u8 acked;               /* Wireless ACK received */
 104 };
 105
 106 /* txstatus supp_reason values */
 107 enum {
 108         B43_TXST_SUPP_NONE,     /* Not suppressed */
 109         B43_TXST_SUPP_PMQ,      /* Suppressed due to PMQ entry */
 110         B43_TXST_SUPP_FLUSH,    /* Suppressed due to flush request */
 111         B43_TXST_SUPP_PREV,     /* Previous fragment failed */
 112         B43_TXST_SUPP_CHAN,     /* Channel mismatch */
 113         B43_TXST_SUPP_LIFE,     /* Lifetime expired */
 114         B43_TXST_SUPP_UNDER,    /* Buffer underflow */
 115         B43_TXST_SUPP_ABNACK,   /* Afterburner NACK */
 116 };
 117
 118 /* Transmit Status as received through DMA/PIO on old chips */
 119 struct b43_hwtxstatus {
 120         PAD_BYTES(4);
 121         __le16 cookie;
 122         u8 flags;
 123         u8 count;
 124          PAD_BYTES(2);
 125         __le16 seq;
 126         u8 phy_stat;
 127          PAD_BYTES(1);
 128 } __attribute__ ((__packed__));
 129
 130 /* Receive header for v4 firmware. */
 131 struct b43_rxhdr_fw4 {
 132         __le16 frame_len;       /* Frame length */
 133          PAD_BYTES(2);
 134         __le16 phy_status0;     /* PHY RX Status 0 */
 135         __u8 jssi;              /* PHY RX Status 1: JSSI */
 136         __u8 sig_qual;          /* PHY RX Status 1: Signal Quality */
 137         __le16 phy_status2;     /* PHY RX Status 2 */
 138         __le16 phy_status3;     /* PHY RX Status 3 */
 139         __le32 mac_status;      /* MAC RX status */
 140         __le16 mac_time;
 141         __le16 channel;
 142 } __attribute__ ((__packed__));
 143
 144 /* PHY RX Status 0 */
 145 #define B43_RX_PHYST0_GAINCTL   0x4000  /* Gain Control */
 146 #define B43_RX_PHYST0_PLCPHCF   0x0200
 147 #define B43_RX_PHYST0_PLCPFV    0x0100
 148 #define B43_RX_PHYST0_SHORTPRMBL        0x0080  /* Received with Short Preamble */
 149 #define B43_RX_PHYST0_LCRS              0x0040
 150 #define B43_RX_PHYST0_ANT               0x0020  /* Antenna */
 151 #define B43_RX_PHYST0_UNSRATE   0x0010
 152 #define B43_RX_PHYST0_CLIP              0x000C
 153 #define B43_RX_PHYST0_CLIP_SHIFT        2
 154 #define B43_RX_PHYST0_FTYPE             0x0003  /* Frame type */
 155 #define  B43_RX_PHYST0_CCK              0x0000  /* Frame type: CCK */
 156 #define  B43_RX_PHYST0_OFDM             0x0001  /* Frame type: OFDM */
 157 #define  B43_RX_PHYST0_PRE_N    0x0002  /* Pre-standard N-PHY frame */
 158 #define  B43_RX_PHYST0_STD_N    0x0003  /* Standard N-PHY frame */
 159
 160 /* PHY RX Status 2 */
 161 #define B43_RX_PHYST2_LNAG              0xC000  /* LNA Gain */
 162 #define B43_RX_PHYST2_LNAG_SHIFT        14
 163 #define B43_RX_PHYST2_PNAG              0x3C00  /* PNA Gain */
 164 #define B43_RX_PHYST2_PNAG_SHIFT        10
 165 #define B43_RX_PHYST2_FOFF              0x03FF  /* F offset */
 166
 167 /* PHY RX Status 3 */
 168 #define B43_RX_PHYST3_DIGG              0x1800  /* DIG Gain */
 169 #define B43_RX_PHYST3_DIGG_SHIFT        11
 170 #define B43_RX_PHYST3_TRSTATE   0x0400  /* TR state */
 171
 172 /* MAC RX Status */
 173 #define B43_RX_MAC_BEACONSENT   0x00008000      /* Beacon send flag */
 174 #define B43_RX_MAC_KEYIDX               0x000007E0      /* Key index */
 175 #define B43_RX_MAC_KEYIDX_SHIFT 5
 176 #define B43_RX_MAC_DECERR               0x00000010      /* Decrypt error */
 177 #define B43_RX_MAC_DEC          0x00000008      /* Decryption attempted */
 178 #define B43_RX_MAC_PADDING              0x00000004      /* Pad bytes present */
 179 #define B43_RX_MAC_RESP         0x00000002      /* Response frame transmitted */
 180 #define B43_RX_MAC_FCSERR               0x00000001      /* FCS error */
 181
 182 /* RX channel */
 183 #define B43_RX_CHAN_GAIN                0xFC00  /* Gain */
 184 #define B43_RX_CHAN_GAIN_SHIFT  10
 185 #define B43_RX_CHAN_ID          0x03FC  /* Channel ID */
 186 #define B43_RX_CHAN_ID_SHIFT    2
 187 #define B43_RX_CHAN_PHYTYPE             0x0003  /* PHY type */
 188
 189 u8 b43_plcp_get_ratecode_cck(const u8 bitrate);
 190 u8 b43_plcp_get_ratecode_ofdm(const u8 bitrate);
 191
 192 void b43_generate_plcp_hdr(struct b43_plcp_hdr4 *plcp,
 193                            const u16 octets, const u8 bitrate);
 194
 195 void b43_rx(struct b43_wldev *dev, struct sk_buff *skb, const void *_rxhdr);
 196
 197 void b43_handle_txstatus(struct b43_wldev *dev,
 198                          const struct b43_txstatus *status);
 199
 200 void b43_handle_hwtxstatus(struct b43_wldev *dev,
 201                            const struct b43_hwtxstatus *hw);
 202
 203 void b43_tx_suspend(struct b43_wldev *dev);
 204 void b43_tx_resume(struct b43_wldev *dev);
 205
 206 #define B43_NR_QOSPARMS         22
 207 enum {
 208         B43_QOSPARM_TXOP = 0,
 209         B43_QOSPARM_CWMIN,
 210         B43_QOSPARM_CWMAX,
 211         B43_QOSPARM_CWCUR,
 212         B43_QOSPARM_AIFS,
 213         B43_QOSPARM_BSLOTS,
 214         B43_QOSPARM_REGGAP,
 215         B43_QOSPARM_STATUS,
 216 };
 217 void b43_qos_init(struct b43_wldev *dev);
 218
 219 /* Helper functions for converting the key-table index from "firmware-format"
 220  * to "raw-format" and back. The firmware API changed for this at some revision.
 221  * We need to account for that here. */
 222 static inline int b43_new_kidx_api(struct b43_wldev *dev)
 223 {
 224         /* FIXME: Not sure the change was at rev 351 */
 225         return (dev->fw.rev >= 351);
 226 }
 227 static inline u8 b43_kidx_to_fw(struct b43_wldev *dev, u8 raw_kidx)
 228 {
 229         u8 firmware_kidx;
 230         if (b43_new_kidx_api(dev)) {
 231                 firmware_kidx = raw_kidx;
 232         } else {
 233                 if (raw_kidx >= 4)      /* Is per STA key? */
 234                         firmware_kidx = raw_kidx - 4;
 235                 else
 236                         firmware_kidx = raw_kidx;       /* TX default key */
 237         }
 238         return firmware_kidx;
 239 }
 240 static inline u8 b43_kidx_to_raw(struct b43_wldev *dev, u8 firmware_kidx)
 241 {
 242         u8 raw_kidx;
 243         if (b43_new_kidx_api(dev))
 244                 raw_kidx = firmware_kidx;
 245         else
 246                 raw_kidx = firmware_kidx + 4;   /* RX default keys or per STA keys */
 247         return raw_kidx;
 248 }
 249
 250 #endif /* B43_XMIT_H_ */