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 <linux/workqueue.h>
  24 #include <net/ieee80211.h>
  25 #include <net/ieee80211softmac.h>
  26
  27 #include "zd_chip.h"
  28 #include "zd_netdev.h"
  29
  30 struct zd_ctrlset {
  31         u8     modulation;
  32         __le16 tx_length;
  33         u8     control;
  34         /* stores only the difference to tx_length on ZD1211B */
  35         __le16 packet_length;
  36         __le16 current_length;
  37         u8     service;
  38         __le16  next_frame_length;
  39 } __attribute__((packed));
  40
  41 #define ZD_CS_RESERVED_SIZE     25
  42
  43 /* zd_crtlset field modulation */
  44 #define ZD_CS_RATE_MASK         0x0f
  45 #define ZD_CS_TYPE_MASK         0x10
  46 #define ZD_CS_RATE(modulation) ((modulation) & ZD_CS_RATE_MASK)
  47 #define ZD_CS_TYPE(modulation) ((modulation) & ZD_CS_TYPE_MASK)
  48
  49 #define ZD_CS_CCK               0x00
  50 #define ZD_CS_OFDM              0x10
  51
  52 /* These are referred to as zd_rates */
  53 #define ZD_CCK_RATE_1M  0x00
  54 #define ZD_CCK_RATE_2M  0x01
  55 #define ZD_CCK_RATE_5_5M        0x02
  56 #define ZD_CCK_RATE_11M 0x03
  57 /* The rates for OFDM are encoded as in the PLCP header. Use ZD_OFDM_RATE_*.
  58  */
  59
  60 /* bit 5 is preamble (when in CCK mode), or a/g selection (when in OFDM mode) */
  61 #define ZD_CS_CCK_PREA_LONG     0x00
  62 #define ZD_CS_CCK_PREA_SHORT    0x20
  63 #define ZD_CS_OFDM_MODE_11G     0x00
  64 #define ZD_CS_OFDM_MODE_11A     0x20
  65
  66 /* zd_ctrlset control field */
  67 #define ZD_CS_NEED_RANDOM_BACKOFF       0x01
  68 #define ZD_CS_MULTICAST                 0x02
  69
  70 #define ZD_CS_FRAME_TYPE_MASK           0x0c
  71 #define ZD_CS_DATA_FRAME                0x00
  72 #define ZD_CS_PS_POLL_FRAME             0x04
  73 #define ZD_CS_MANAGEMENT_FRAME          0x08
  74 #define ZD_CS_NO_SEQUENCE_CTL_FRAME     0x0c
  75
  76 #define ZD_CS_WAKE_DESTINATION          0x10
  77 #define ZD_CS_RTS                       0x20
  78 #define ZD_CS_ENCRYPT                   0x40
  79 #define ZD_CS_SELF_CTS                  0x80
  80
  81 /* Incoming frames are prepended by a PLCP header */
  82 #define ZD_PLCP_HEADER_SIZE             5
  83
  84 struct rx_length_info {
  85         __le16 length[3];
  86         __le16 tag;
  87 } __attribute__((packed));
  88
  89 #define RX_LENGTH_INFO_TAG              0x697e
  90
  91 struct rx_status {
  92         u8 signal_quality_cck;
  93         /* rssi */
  94         u8 signal_strength;
  95         u8 signal_quality_ofdm;
  96         u8 decryption_type;
  97         u8 frame_status;
  98 } __attribute__((packed));
  99
 100 /* rx_status field decryption_type */
 101 #define ZD_RX_NO_WEP    0
 102 #define ZD_RX_WEP64     1
 103 #define ZD_RX_TKIP      2
 104 #define ZD_RX_AES       4
 105 #define ZD_RX_WEP128    5
 106 #define ZD_RX_WEP256    6
 107
 108 /* rx_status field frame_status */
 109 #define ZD_RX_FRAME_MODULATION_MASK     0x01
 110 #define ZD_RX_CCK                       0x00
 111 #define ZD_RX_OFDM                      0x01
 112
 113 #define ZD_RX_TIMEOUT_ERROR             0x02
 114 #define ZD_RX_FIFO_OVERRUN_ERROR        0x04
 115 #define ZD_RX_DECRYPTION_ERROR          0x08
 116 #define ZD_RX_CRC32_ERROR               0x10
 117 #define ZD_RX_NO_ADDR1_MATCH_ERROR      0x20
 118 #define ZD_RX_CRC16_ERROR               0x40
 119 #define ZD_RX_ERROR                     0x80
 120
 121 struct housekeeping {
 122         struct delayed_work link_led_work;
 123 };
 124
 125 #define ZD_MAC_STATS_BUFFER_SIZE 16
 126
 127 struct zd_mac {
 128         struct zd_chip chip;
 129         spinlock_t lock;
 130         struct net_device *netdev;
 131
 132         /* Unlocked reading possible */
 133         struct iw_statistics iw_stats;
 134
 135         struct housekeeping housekeeping;
 136         struct work_struct set_multicast_hash_work;
 137         struct zd_mc_hash multicast_hash;
 138         struct delayed_work set_rts_cts_work;
 139         struct delayed_work set_basic_rates_work;
 140
 141         struct tasklet_struct rx_tasklet;
 142         struct sk_buff_head rx_queue;
 143
 144         unsigned int stats_count;
 145         u8 qual_buffer[ZD_MAC_STATS_BUFFER_SIZE];
 146         u8 rssi_buffer[ZD_MAC_STATS_BUFFER_SIZE];
 147         u8 regdomain;
 148         u8 default_regdomain;
 149         u8 requested_channel;
 150
 151         /* A bitpattern of cr_rates */
 152         u16 basic_rates;
 153
 154         /* A zd_rate */
 155         u8 rts_rate;
 156
 157         /* Short preamble (used for RTS/CTS) */
 158         unsigned int short_preamble:1;
 159
 160         /* flags to indicate update in progress */
 161         unsigned int updating_rts_rate:1;
 162         unsigned int updating_basic_rates:1;
 163 };
 164
 165 static inline struct ieee80211_device *zd_mac_to_ieee80211(struct zd_mac *mac)
 166 {
 167         return zd_netdev_ieee80211(mac->netdev);
 168 }
 169
 170 static inline struct zd_mac *zd_netdev_mac(struct net_device *netdev)
 171 {
 172         return ieee80211softmac_priv(netdev);
 173 }
 174
 175 static inline struct zd_mac *zd_chip_to_mac(struct zd_chip *chip)
 176 {
 177         return container_of(chip, struct zd_mac, chip);
 178 }
 179
 180 static inline struct zd_mac *zd_usb_to_mac(struct zd_usb *usb)
 181 {
 182         return zd_chip_to_mac(zd_usb_to_chip(usb));
 183 }
 184
 185 #define zd_mac_dev(mac) (zd_chip_dev(&(mac)->chip))
 186
 187 int zd_mac_init(struct zd_mac *mac,
 188                 struct net_device *netdev,
 189                 struct usb_interface *intf);
 190 void zd_mac_clear(struct zd_mac *mac);
 191
 192 int zd_mac_init_hw(struct zd_mac *mac, u8 device_type);
 193
 194 int zd_mac_open(struct net_device *netdev);
 195 int zd_mac_stop(struct net_device *netdev);
 196 int zd_mac_set_mac_address(struct net_device *dev, void *p);
 197 void zd_mac_set_multicast_list(struct net_device *netdev);
 198
 199 int zd_mac_rx_irq(struct zd_mac *mac, const u8 *buffer, unsigned int length);
 200
 201 int zd_mac_set_regdomain(struct zd_mac *zd_mac, u8 regdomain);
 202 u8 zd_mac_get_regdomain(struct zd_mac *zd_mac);
 203
 204 int zd_mac_request_channel(struct zd_mac *mac, u8 channel);
 205 u8 zd_mac_get_channel(struct zd_mac *mac);
 206
 207 int zd_mac_set_mode(struct zd_mac *mac, u32 mode);
 208 int zd_mac_get_mode(struct zd_mac *mac, u32 *mode);
 209
 210 int zd_mac_get_range(struct zd_mac *mac, struct iw_range *range);
 211
 212 struct iw_statistics *zd_mac_get_wireless_stats(struct net_device *ndev);
 213
 214 #ifdef DEBUG
 215 void zd_dump_rx_status(const struct rx_status *status);
 216 #else
 217 #define zd_dump_rx_status(status)
 218 #endif /* DEBUG */
 219
 220 #endif /* _ZD_MAC_H */