drivers/net/wireless/bcm43xx/bcm43xx_xmit.h

   1 #ifndef BCM43xx_XMIT_H_
   2 #define BCM43xx_XMIT_H_
   3
   4 #include "bcm43xx_main.h"
   5
   6
   7 #define _bcm43xx_declare_plcp_hdr(size) \
   8         struct bcm43xx_plcp_hdr##size {         \
   9                 union {                         \
  10                         __le32 data;            \
  11                         __u8 raw[size];         \
  12                 } __attribute__((__packed__));  \
  13         } __attribute__((__packed__))
  14
  15 /* struct bcm43xx_plcp_hdr4 */
  16 _bcm43xx_declare_plcp_hdr(4);
  17 /* struct bcm43xx_plcp_hdr6 */
  18 _bcm43xx_declare_plcp_hdr(6);
  19
  20 #undef _bcm43xx_declare_plcp_hdr
  21
  22 /* Device specific TX header. To be prepended to TX frames. */
  23 struct bcm43xx_txhdr {
  24         union {
  25                 struct {
  26                         __le16 flags;
  27                         __le16 wsec_rate;
  28                         __le16 frame_control;
  29                         u16 unknown_zeroed_0;
  30                         __le16 control;
  31                         u8 wep_iv[10];
  32                         u8 unknown_wsec_tkip_data[3]; //FIXME
  33                         PAD_BYTES(3);
  34                         u8 mac1[6];
  35                         u16 unknown_zeroed_1;
  36                         struct bcm43xx_plcp_hdr4 rts_cts_fallback_plcp;
  37                         __le16 rts_cts_dur_fallback;
  38                         struct bcm43xx_plcp_hdr4 fallback_plcp;
  39                         __le16 fallback_dur_id;
  40                         PAD_BYTES(2);
  41                         __le16 cookie;
  42                         __le16 unknown_scb_stuff; //FIXME
  43                         struct bcm43xx_plcp_hdr6 rts_cts_plcp;
  44                         __le16 rts_cts_frame_control;
  45                         __le16 rts_cts_dur;
  46                         u8 rts_cts_mac1[6];
  47                         u8 rts_cts_mac2[6];
  48                         PAD_BYTES(2);
  49                         struct bcm43xx_plcp_hdr6 plcp;
  50                 } __attribute__((__packed__));
  51                 u8 raw[82];
  52         } __attribute__((__packed__));
  53 } __attribute__((__packed__));
  54
  55 /* Values/Masks for the device TX header */
  56 #define BCM43xx_TXHDRFLAG_EXPECTACK             0x0001
  57 #define BCM43xx_TXHDRFLAG_RTSCTS                0x0002
  58 #define BCM43xx_TXHDRFLAG_RTS                   0x0004
  59 #define BCM43xx_TXHDRFLAG_FIRSTFRAGMENT         0x0008
  60 #define BCM43xx_TXHDRFLAG_DESTPSMODE            0x0020
  61 #define BCM43xx_TXHDRFLAG_RTSCTS_OFDM           0x0080
  62 #define BCM43xx_TXHDRFLAG_FALLBACKOFDM          0x0100
  63 #define BCM43xx_TXHDRFLAG_RTSCTSFALLBACK_OFDM   0x0200
  64 #define BCM43xx_TXHDRFLAG_CTS                   0x0400
  65 #define BCM43xx_TXHDRFLAG_FRAMEBURST            0x0800
  66
  67 #define BCM43xx_TXHDRCTL_OFDM                   0x0001
  68 #define BCM43xx_TXHDRCTL_SHORT_PREAMBLE         0x0010
  69 #define BCM43xx_TXHDRCTL_ANTENNADIV_MASK        0x0030
  70 #define BCM43xx_TXHDRCTL_ANTENNADIV_SHIFT       8
  71
  72 #define BCM43xx_TXHDR_RATE_MASK                 0x0F00
  73 #define BCM43xx_TXHDR_RATE_SHIFT                8
  74 #define BCM43xx_TXHDR_RTSRATE_MASK              0xF000
  75 #define BCM43xx_TXHDR_RTSRATE_SHIFT             12
  76 #define BCM43xx_TXHDR_WSEC_KEYINDEX_MASK        0x00F0
  77 #define BCM43xx_TXHDR_WSEC_KEYINDEX_SHIFT       4
  78 #define BCM43xx_TXHDR_WSEC_ALGO_MASK            0x0003
  79 #define BCM43xx_TXHDR_WSEC_ALGO_SHIFT           0
  80
  81 void bcm43xx_generate_txhdr(struct bcm43xx_private *bcm,
  82                             struct bcm43xx_txhdr *txhdr,
  83                             const unsigned char *fragment_data,
  84                             const unsigned int fragment_len,
  85                             const int is_first_fragment,
  86                             const u16 cookie);
  87
  88 /* RX header as received from the hardware. */
  89 struct bcm43xx_rxhdr {
  90         /* Frame Length. Must be generated explicitely in PIO mode. */
  91         __le16 frame_length;
  92         PAD_BYTES(2);
  93         /* Flags field 1 */
  94         __le16 flags1;
  95         u8 rssi;
  96         u8 signal_quality;
  97         PAD_BYTES(2);
  98         /* Flags field 3 */
  99         __le16 flags3;
 100         /* Flags field 2 */
 101         __le16 flags2;
 102         /* Lower 16bits of the TSF at the time the frame started. */
 103         __le16 mactime;
 104         PAD_BYTES(14);
 105 } __attribute__((__packed__));
 106
 107 #define BCM43xx_RXHDR_FLAGS1_OFDM               (1 << 0)
 108 /*#define BCM43xx_RXHDR_FLAGS1_SIGNAL???        (1 << 3) FIXME */
 109 #define BCM43xx_RXHDR_FLAGS1_SHORTPREAMBLE      (1 << 7)
 110 #define BCM43xx_RXHDR_FLAGS1_2053RSSIADJ        (1 << 14)
 111
 112 #define BCM43xx_RXHDR_FLAGS2_INVALIDFRAME       (1 << 0)
 113 #define BCM43xx_RXHDR_FLAGS2_TYPE2FRAME         (1 << 2)
 114 /*FIXME: WEP related flags */
 115
 116 #define BCM43xx_RXHDR_FLAGS3_2050RSSIADJ        (1 << 10)
 117
 118 /* Transmit Status as received from the hardware. */
 119 struct bcm43xx_hwxmitstatus {
 120         PAD_BYTES(4);
 121         __le16 cookie;
 122         u8 flags;
 123         u8 cnt1:4,
 124            cnt2:4;
 125         PAD_BYTES(2);
 126         __le16 seq;
 127         __le16 unknown; //FIXME
 128 } __attribute__((__packed__));
 129
 130 /* Transmit Status in CPU byteorder. */
 131 struct bcm43xx_xmitstatus {
 132         u16 cookie;
 133         u8 flags;
 134         u8 cnt1:4,
 135            cnt2:4;
 136         u16 seq;
 137         u16 unknown; //FIXME
 138 };
 139
 140 #define BCM43xx_TXSTAT_FLAG_AMPDU       0x10
 141 #define BCM43xx_TXSTAT_FLAG_INTER       0x20
 142
 143 u8 bcm43xx_plcp_get_ratecode_cck(const u8 bitrate);
 144 u8 bcm43xx_plcp_get_ratecode_ofdm(const u8 bitrate);
 145
 146 int bcm43xx_rx(struct bcm43xx_private *bcm,
 147                struct sk_buff *skb,
 148                struct bcm43xx_rxhdr *rxhdr);
 149
 150 #endif /* BCM43xx_XMIT_H_ */