drivers/net/wireless/zd1211rw/zd_mac.h

   1 /* zd_mac.h
   2  *
   3  * This program is free software; you can redistribute it and/or modify
   4  * it under the terms of the GNU General Public License as published by
   5  * the Free Software Foundation; either version 2 of the License, or
   6  * (at your option) any later version.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License
  14  * along with this program; if not, write to the Free Software
  15  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  16  */
  17
  18 #ifndef _ZD_MAC_H
  19 #define _ZD_MAC_H
  20
  21 #include <linux/wireless.h>
  22 #include <linux/kernel.h>
  23 #include <net/ieee80211.h>
  24 #include <net/ieee80211softmac.h>
  25
  26 #include "zd_chip.h"
  27 #include "zd_netdev.h"
  28
  29 struct zd_ctrlset {
  30         u8     modulation;
  31         __le16 tx_length;
  32         u8     control;
  33         /* stores only the difference to tx_length on ZD1211B */
  34         __le16 packet_length;
  35         __le16 current_length;
  36         u8     service;
  37         __le16  next_frame_length;
  38 } __attribute__((packed));
  39
  40 #define ZD_CS_RESERVED_SIZE     25
  41
  42 /* zd_crtlset field modulation */
  43 #define ZD_CS_RATE_MASK         0x0f
  44 #define ZD_CS_TYPE_MASK         0x10
  45 #define ZD_CS_RATE(modulation) ((modulation) & ZD_CS_RATE_MASK)
  46 #define ZD_CS_TYPE(modulation) ((modulation) & ZD_CS_TYPE_MASK)
  47
  48 #define ZD_CS_CCK               0x00
  49 #define ZD_CS_OFDM              0x10
  50
  51 #define ZD_CS_CCK_RATE_1M       0x00
  52 #define ZD_CS_CCK_RATE_2M       0x01
  53 #define ZD_CS_CCK_RATE_5_5M     0x02
  54 #define ZD_CS_CCK_RATE_11M      0x03
  55 /* The rates for OFDM are encoded as in the PLCP header. Use ZD_OFDM_RATE_*.
  56  */
  57
  58 /* bit 5 is preamble (when in CCK mode), or a/g selection (when in OFDM mode) */
  59 #define ZD_CS_CCK_PREA_LONG     0x00
  60 #define ZD_CS_CCK_PREA_SHORT    0x20
  61 #define ZD_CS_OFDM_MODE_11G     0x00
  62 #define ZD_CS_OFDM_MODE_11A     0x20
  63
  64 /* zd_ctrlset control field */
  65 #define ZD_CS_NEED_RANDOM_BACKOFF       0x01
  66 #define ZD_CS_MULTICAST                 0x02
  67
  68 #define ZD_CS_FRAME_TYPE_MASK           0x0c
  69 #define ZD_CS_DATA_FRAME                0x00
  70 #define ZD_CS_PS_POLL_FRAME             0x04
  71 #define ZD_CS_MANAGEMENT_FRAME          0x08
  72 #define ZD_CS_NO_SEQUENCE_CTL_FRAME     0x0c
  73
  74 #define ZD_CS_WAKE_DESTINATION          0x10
  75 #define ZD_CS_RTS                       0x20
  76 #define ZD_CS_ENCRYPT                   0x40
  77 #define ZD_CS_SELF_CTS                  0x80
  78
  79 /* Incoming frames are prepended by a PLCP header */
  80 #define ZD_PLCP_HEADER_SIZE             5
  81
  82 struct rx_length_info {
  83         __le16 length[3];
  84         __le16 tag;
  85 };
  86
  87 #define RX_LENGTH_INFO_TAG              0x697e
  88
  89 struct rx_status {
  90         u8 signal_quality_cck;
  91         /* rssi */
  92         u8 signal_strength;
  93         u8 signal_quality_ofdm;
  94         u8 decryption_type;
  95         u8 frame_status;
  96 };
  97
  98 /* rx_status field decryption_type */
  99 #define ZD_RX_NO_WEP    0
 100 #define ZD_RX_WEP64     1
 101 #define ZD_RX_TKIP      2
 102 #define ZD_RX_AES       4
 103 #define ZD_RX_WEP128    5
 104 #define ZD_RX_WEP256    6
 105
 106 /* rx_status field frame_status */
 107 #define ZD_RX_FRAME_MODULATION_MASK     0x01
 108 #define ZD_RX_CCK                       0x00
 109 #define ZD_RX_OFDM                      0x01
 110
 111 #define ZD_RX_TIMEOUT_ERROR             0x02
 112 #define ZD_RX_FIFO_OVERRUN_ERROR        0x04
 113 #define ZD_RX_DECRYPTION_ERROR          0x08
 114 #define ZD_RX_CRC32_ERROR               0x10
 115 #define ZD_RX_NO_ADDR1_MATCH_ERROR      0x20
 116 #define ZD_RX_CRC16_ERROR               0x40
 117 #define ZD_RX_ERROR                     0x80
 118
 119 enum mac_flags {
 120         MAC_FIXED_CHANNEL = 0x01,
 121 };
 122
 123 struct housekeeping {
 124         struct delayed_work link_led_work;
 125 };
 126
 127 #define ZD_MAC_STATS_BUFFER_SIZE 16
 128
 129 struct zd_mac {
 130         struct zd_chip chip;
 131         spinlock_t lock;
 132         struct net_device *netdev;
 133         /* Unlocked reading possible */
 134         struct iw_statistics iw_stats;
 135         struct housekeeping housekeeping;
 136         unsigned int stats_count;
 137         u8 qual_buffer[ZD_MAC_STATS_BUFFER_SIZE];
 138         u8 rssi_buffer[ZD_MAC_STATS_BUFFER_SIZE];
 139         u8 regdomain;
 140         u8 default_regdomain;
 141         u8 requested_channel;
 142 };
 143
 144 static inline struct ieee80211_device *zd_mac_to_ieee80211(struct zd_mac *mac)
 145 {
 146         return zd_netdev_ieee80211(mac->netdev);
 147 }
 148
 149 static inline struct zd_mac *zd_netdev_mac(struct net_device *netdev)
 150 {
 151         return ieee80211softmac_priv(netdev);
 152 }
 153
 154 static inline struct zd_mac *zd_chip_to_mac(struct zd_chip *chip)
 155 {
 156         return container_of(chip, struct zd_mac, chip);
 157 }
 158
 159 static inline struct zd_mac *zd_usb_to_mac(struct zd_usb *usb)
 160 {
 161         return zd_chip_to_mac(zd_usb_to_chip(usb));
 162 }
 163
 164 #define zd_mac_dev(mac) (zd_chip_dev(&(mac)->chip))
 165
 166 int zd_mac_init(struct zd_mac *mac,
 167                 struct net_device *netdev,
 168                 struct usb_interface *intf);
 169 void zd_mac_clear(struct zd_mac *mac);
 170
 171 int zd_mac_init_hw(struct zd_mac *mac, u8 device_type);
 172
 173 int zd_mac_open(struct net_device *netdev);
 174 int zd_mac_stop(struct net_device *netdev);
 175 int zd_mac_set_mac_address(struct net_device *dev, void *p);
 176
 177 int zd_mac_rx(struct zd_mac *mac, const u8 *buffer, unsigned int length);
 178
 179 int zd_mac_set_regdomain(struct zd_mac *zd_mac, u8 regdomain);
 180 u8 zd_mac_get_regdomain(struct zd_mac *zd_mac);
 181
 182 int zd_mac_request_channel(struct zd_mac *mac, u8 channel);
 183 int zd_mac_get_channel(struct zd_mac *mac, u8 *channel, u8 *flags);
 184
 185 int zd_mac_set_mode(struct zd_mac *mac, u32 mode);
 186 int zd_mac_get_mode(struct zd_mac *mac, u32 *mode);
 187
 188 int zd_mac_get_range(struct zd_mac *mac, struct iw_range *range);
 189
 190 struct iw_statistics *zd_mac_get_wireless_stats(struct net_device *ndev);
 191
 192 #ifdef DEBUG
 193 void zd_dump_rx_status(const struct rx_status *status);
 194 #else
 195 #define zd_dump_rx_status(status)
 196 #endif /* DEBUG */
 197
 198 #endif /* _ZD_MAC_H */