drivers/net/wireless/atmel/at76c50x-usb.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * Copyright (c) 2002,2003 Oliver Kurth
   4  *           (c) 2003,2004 Joerg Albert <joerg.albert@gmx.de>
   5  *           (c) 2007 Guido Guenther <agx@sigxcpu.org>
   6  *
   7  * This driver was based on information from the Sourceforge driver
   8  * released and maintained by Atmel:
   9  *
  10  *  http://sourceforge.net/projects/atmelwlandriver/
  11  *
  12  * Although the code was completely re-written,
  13  * it would have been impossible without Atmel's decision to
  14  * release an Open Source driver (unfortunately the firmware was
  15  * kept binary only). Thanks for that decision to Atmel!
  16  */
  17
  18 #ifndef _AT76_USB_H
  19 #define _AT76_USB_H
  20
  21 /* Board types */
  22 enum board_type {
  23         BOARD_503_ISL3861 = 1,
  24         BOARD_503_ISL3863 = 2,
  25         BOARD_503 = 3,
  26         BOARD_503_ACC = 4,
  27         BOARD_505 = 5,
  28         BOARD_505_2958 = 6,
  29         BOARD_505A = 7,
  30         BOARD_505AMX = 8
  31 };
  32
  33 #define CMD_STATUS_IDLE                         0x00
  34 #define CMD_STATUS_COMPLETE                     0x01
  35 #define CMD_STATUS_UNKNOWN                      0x02
  36 #define CMD_STATUS_INVALID_PARAMETER            0x03
  37 #define CMD_STATUS_FUNCTION_NOT_SUPPORTED       0x04
  38 #define CMD_STATUS_TIME_OUT                     0x07
  39 #define CMD_STATUS_IN_PROGRESS                  0x08
  40 #define CMD_STATUS_HOST_FAILURE                 0xff
  41 #define CMD_STATUS_SCAN_FAILED                  0xf0
  42
  43 /* answers to get op mode */
  44 #define OPMODE_NONE                             0x00
  45 #define OPMODE_NORMAL_NIC_WITH_FLASH            0x01
  46 #define OPMODE_HW_CONFIG_MODE                   0x02
  47 #define OPMODE_DFU_MODE_WITH_FLASH              0x03
  48 #define OPMODE_NORMAL_NIC_WITHOUT_FLASH         0x04
  49
  50 #define CMD_SET_MIB             0x01
  51 #define CMD_GET_MIB             0x02
  52 #define CMD_SCAN                0x03
  53 #define CMD_JOIN                0x04
  54 #define CMD_START_IBSS          0x05
  55 #define CMD_RADIO_ON            0x06
  56 #define CMD_RADIO_OFF           0x07
  57 #define CMD_STARTUP             0x0B
  58
  59 #define MIB_LOCAL               0x01
  60 #define MIB_MAC_ADDR            0x02
  61 #define MIB_MAC                 0x03
  62 #define MIB_MAC_MGMT            0x05
  63 #define MIB_MAC_WEP             0x06
  64 #define MIB_PHY                 0x07
  65 #define MIB_FW_VERSION          0x08
  66 #define MIB_MDOMAIN             0x09
  67
  68 #define ADHOC_MODE              1
  69 #define INFRASTRUCTURE_MODE     2
  70
  71 /* values for struct mib_local, field preamble_type */
  72 #define PREAMBLE_TYPE_LONG      0
  73 #define PREAMBLE_TYPE_SHORT     1
  74 #define PREAMBLE_TYPE_AUTO      2
  75
  76 /* values for tx_rate */
  77 #define TX_RATE_1MBIT           0
  78 #define TX_RATE_2MBIT           1
  79 #define TX_RATE_5_5MBIT         2
  80 #define TX_RATE_11MBIT          3
  81 #define TX_RATE_AUTO            4
  82
  83 /* power management modes */
  84 #define AT76_PM_OFF             1
  85 #define AT76_PM_ON              2
  86 #define AT76_PM_SMART           3
  87
  88 struct hwcfg_r505 {
  89         u8 cr39_values[14];
  90         u8 reserved1[14];
  91         u8 bb_cr[14];
  92         u8 pidvid[4];
  93         u8 mac_addr[ETH_ALEN];
  94         u8 regulatory_domain;
  95         u8 reserved2[14];
  96         u8 cr15_values[14];
  97         u8 reserved3[3];
  98 } __packed;
  99
 100 struct hwcfg_rfmd {
 101         u8 cr20_values[14];
 102         u8 cr21_values[14];
 103         u8 bb_cr[14];
 104         u8 pidvid[4];
 105         u8 mac_addr[ETH_ALEN];
 106         u8 regulatory_domain;
 107         u8 low_power_values[14];
 108         u8 normal_power_values[14];
 109         u8 reserved1[3];
 110 } __packed;
 111
 112 struct hwcfg_intersil {
 113         u8 mac_addr[ETH_ALEN];
 114         u8 cr31_values[14];
 115         u8 cr58_values[14];
 116         u8 pidvid[4];
 117         u8 regulatory_domain;
 118         u8 reserved[1];
 119 } __packed;
 120
 121 union at76_hwcfg {
 122         struct hwcfg_intersil i;
 123         struct hwcfg_rfmd r3;
 124         struct hwcfg_r505 r5;
 125 };
 126
 127 #define WEP_SMALL_KEY_LEN       (40 / 8)
 128 #define WEP_LARGE_KEY_LEN       (104 / 8)
 129 #define WEP_KEYS                (4)
 130
 131 struct at76_card_config {
 132         u8 exclude_unencrypted;
 133         u8 promiscuous_mode;
 134         u8 short_retry_limit;
 135         u8 encryption_type;
 136         __le16 rts_threshold;
 137         __le16 fragmentation_threshold; /* 256..2346 */
 138         u8 basic_rate_set[4];
 139         u8 auto_rate_fallback;  /* 0,1 */
 140         u8 channel;
 141         u8 privacy_invoked;
 142         u8 wep_default_key_id;  /* 0..3 */
 143         u8 current_ssid[32];
 144         u8 wep_default_key_value[4][WEP_LARGE_KEY_LEN];
 145         u8 ssid_len;
 146         u8 short_preamble;
 147         __le16 beacon_period;
 148 } __packed;
 149
 150 struct at76_command {
 151         u8 cmd;
 152         u8 reserved;
 153         __le16 size;
 154         u8 data[];
 155 } __packed;
 156
 157 /* Length of Atmel-specific Rx header before 802.11 frame */
 158 #define AT76_RX_HDRLEN offsetof(struct at76_rx_buffer, packet)
 159
 160 struct at76_rx_buffer {
 161         __le16 wlength;
 162         u8 rx_rate;
 163         u8 newbss;
 164         u8 fragmentation;
 165         u8 rssi;
 166         u8 link_quality;
 167         u8 noise_level;
 168         __le32 rx_time;
 169         u8 packet[IEEE80211_MAX_FRAG_THRESHOLD];
 170 } __packed;
 171
 172 /* Length of Atmel-specific Tx header before 802.11 frame */
 173 #define AT76_TX_HDRLEN offsetof(struct at76_tx_buffer, packet)
 174
 175 struct at76_tx_buffer {
 176         __le16 wlength;
 177         u8 tx_rate;
 178         u8 padding;
 179         u8 reserved[4];
 180         u8 packet[IEEE80211_MAX_FRAG_THRESHOLD];
 181 } __packed;
 182
 183 /* defines for scan_type below */
 184 #define SCAN_TYPE_ACTIVE        0
 185 #define SCAN_TYPE_PASSIVE       1
 186
 187 struct at76_req_scan {
 188         u8 bssid[ETH_ALEN];
 189         u8 essid[32];
 190         u8 scan_type;
 191         u8 channel;
 192         __le16 probe_delay;
 193         __le16 min_channel_time;
 194         __le16 max_channel_time;
 195         u8 essid_size;
 196         u8 international_scan;
 197 } __packed;
 198
 199 struct at76_req_ibss {
 200         u8 bssid[ETH_ALEN];
 201         u8 essid[32];
 202         u8 bss_type;
 203         u8 channel;
 204         u8 essid_size;
 205         u8 reserved[3];
 206 } __packed;
 207
 208 struct at76_req_join {
 209         u8 bssid[ETH_ALEN];
 210         u8 essid[32];
 211         u8 bss_type;
 212         u8 channel;
 213         __le16 timeout;
 214         u8 essid_size;
 215         u8 reserved;
 216 } __packed;
 217
 218 struct mib_local {
 219         u16 reserved0;
 220         u8 beacon_enable;
 221         u8 txautorate_fallback;
 222         u8 reserved1;
 223         u8 ssid_size;
 224         u8 promiscuous_mode;
 225         u16 reserved2;
 226         u8 preamble_type;
 227         u16 reserved3;
 228 } __packed;
 229
 230 struct mib_mac_addr {
 231         u8 mac_addr[ETH_ALEN];
 232         u8 res[2];              /* ??? */
 233         u8 group_addr[4][ETH_ALEN];
 234         u8 group_addr_status[4];
 235 } __packed;
 236
 237 struct mib_mac {
 238         __le32 max_tx_msdu_lifetime;
 239         __le32 max_rx_lifetime;
 240         __le16 frag_threshold;
 241         __le16 rts_threshold;
 242         __le16 cwmin;
 243         __le16 cwmax;
 244         u8 short_retry_time;
 245         u8 long_retry_time;
 246         u8 scan_type;           /* active or passive */
 247         u8 scan_channel;
 248         __le16 probe_delay;     /* delay before ProbeReq in active scan, RO */
 249         __le16 min_channel_time;
 250         __le16 max_channel_time;
 251         __le16 listen_interval;
 252         u8 desired_ssid[32];
 253         u8 desired_bssid[ETH_ALEN];
 254         u8 desired_bsstype;     /* ad-hoc or infrastructure */
 255         u8 reserved2;
 256 } __packed;
 257
 258 struct mib_mac_mgmt {
 259         __le16 beacon_period;
 260         __le16 CFP_max_duration;
 261         __le16 medium_occupancy_limit;
 262         __le16 station_id;      /* assoc id */
 263         __le16 ATIM_window;
 264         u8 CFP_mode;
 265         u8 privacy_option_implemented;
 266         u8 DTIM_period;
 267         u8 CFP_period;
 268         u8 current_bssid[ETH_ALEN];
 269         u8 current_essid[32];
 270         u8 current_bss_type;
 271         u8 power_mgmt_mode;
 272         /* rfmd and 505 */
 273         u8 ibss_change;
 274         u8 res;
 275         u8 multi_domain_capability_implemented;
 276         u8 multi_domain_capability_enabled;
 277         u8 country_string[IEEE80211_COUNTRY_STRING_LEN];
 278         u8 reserved[3];
 279 } __packed;
 280
 281 struct mib_mac_wep {
 282         u8 privacy_invoked;     /* 0 disable encr., 1 enable encr */
 283         u8 wep_default_key_id;
 284         u8 wep_key_mapping_len;
 285         u8 exclude_unencrypted;
 286         __le32 wep_icv_error_count;
 287         __le32 wep_excluded_count;
 288         u8 wep_default_keyvalue[WEP_KEYS][WEP_LARGE_KEY_LEN];
 289         u8 encryption_level;    /* 1 for 40bit, 2 for 104bit encryption */
 290 } __packed;
 291
 292 struct mib_phy {
 293         __le32 ed_threshold;
 294
 295         __le16 slot_time;
 296         __le16 sifs_time;
 297         __le16 preamble_length;
 298         __le16 plcp_header_length;
 299         __le16 mpdu_max_length;
 300         __le16 cca_mode_supported;
 301
 302         u8 operation_rate_set[4];
 303         u8 channel_id;
 304         u8 current_cca_mode;
 305         u8 phy_type;
 306         u8 current_reg_domain;
 307 } __packed;
 308
 309 struct mib_fw_version {
 310         u8 major;
 311         u8 minor;
 312         u8 patch;
 313         u8 build;
 314 } __packed;
 315
 316 struct mib_mdomain {
 317         u8 tx_powerlevel[14];
 318         u8 channel_list[14];    /* 0 for invalid channels */
 319 } __packed;
 320
 321 struct set_mib_buffer {
 322         u8 type;
 323         u8 size;
 324         u8 index;
 325         u8 reserved;
 326         union {
 327                 u8 byte;
 328                 __le16 word;
 329                 u8 addr[ETH_ALEN];
 330                 struct mib_mac_wep wep_mib;
 331         } data;
 332 } __packed;
 333
 334 struct at76_fw_header {
 335         __le32 crc;             /* CRC32 of the whole image */
 336         __le32 board_type;      /* firmware compatibility code */
 337         u8 build;               /* firmware build number */
 338         u8 patch;               /* firmware patch level */
 339         u8 minor;               /* firmware minor version */
 340         u8 major;               /* firmware major version */
 341         __le32 str_offset;      /* offset of the copyright string */
 342         __le32 int_fw_offset;   /* internal firmware image offset */
 343         __le32 int_fw_len;      /* internal firmware image length */
 344         __le32 ext_fw_offset;   /* external firmware image offset */
 345         __le32 ext_fw_len;      /* external firmware image length */
 346 } __packed;
 347
 348 /* a description of a regulatory domain and the allowed channels */
 349 struct reg_domain {
 350         u16 code;
 351         char const *name;
 352         u32 channel_map;        /* if bit N is set, channel (N+1) is allowed */
 353 };
 354
 355 /* Data for one loaded firmware file */
 356 struct fwentry {
 357         const char *const fwname;
 358         const struct firmware *fw;
 359         int extfw_size;
 360         int intfw_size;
 361         /* pointer to loaded firmware, no need to free */
 362         u8 *extfw;              /* external firmware, extfw_size bytes long */
 363         u8 *intfw;              /* internal firmware, intfw_size bytes long */
 364         enum board_type board_type;     /* board type */
 365         struct mib_fw_version fw_version;
 366         int loaded;             /* Loaded and parsed successfully */
 367 };
 368
 369 struct at76_priv {
 370         struct usb_device *udev;        /* USB device pointer */
 371
 372         struct sk_buff *rx_skb; /* skbuff for receiving data */
 373         struct sk_buff *tx_skb; /* skbuff for transmitting data */
 374         void *bulk_out_buffer;  /* buffer for sending data */
 375
 376         struct urb *tx_urb;     /* URB for sending data */
 377         struct urb *rx_urb;     /* URB for receiving data */
 378
 379         unsigned int tx_pipe;   /* bulk out pipe */
 380         unsigned int rx_pipe;   /* bulk in pipe */
 381
 382         struct mutex mtx;       /* locks this structure */
 383
 384         /* work queues */
 385         struct work_struct work_set_promisc;
 386         struct work_struct work_submit_rx;
 387         struct work_struct work_join_bssid;
 388         struct delayed_work dwork_hw_scan;
 389
 390         struct tasklet_struct rx_tasklet;
 391
 392         /* the WEP stuff */
 393         int wep_enabled;        /* 1 if WEP is enabled */
 394         int wep_key_id;         /* key id to be used */
 395         u8 wep_keys[WEP_KEYS][WEP_LARGE_KEY_LEN];       /* WEP keys */
 396         u8 wep_keys_len[WEP_KEYS];      /* length of WEP keys */
 397
 398         int channel;
 399         int iw_mode;
 400         u8 bssid[ETH_ALEN];
 401         u8 essid[IW_ESSID_MAX_SIZE];
 402         int essid_size;
 403         int radio_on;
 404         int promisc;
 405
 406         int preamble_type;      /* 0 - long, 1 - short, 2 - auto */
 407         int auth_mode;          /* authentication type: 0 open, 1 shared key */
 408         int txrate;             /* 0,1,2,3 = 1,2,5.5,11 Mbps, 4 is auto */
 409         int frag_threshold;     /* threshold for fragmentation of tx packets */
 410         int rts_threshold;      /* threshold for RTS mechanism */
 411         int short_retry_limit;
 412
 413         int scan_min_time;      /* scan min channel time */
 414         int scan_max_time;      /* scan max channel time */
 415         int scan_mode;          /* SCAN_TYPE_ACTIVE, SCAN_TYPE_PASSIVE */
 416         int scan_need_any;      /* if set, need to scan for any ESSID */
 417         bool scanning;          /* if set, the scan is running */
 418
 419         u16 assoc_id;           /* current association ID, if associated */
 420
 421         u8 pm_mode;             /* power management mode */
 422         u32 pm_period;          /* power management period in microseconds */
 423
 424         struct reg_domain const *domain;        /* reg domain description */
 425
 426         /* These fields contain HW config provided by the device (not all of
 427          * these fields are used by all board types) */
 428         u8 mac_addr[ETH_ALEN];
 429         u8 regulatory_domain;
 430
 431         struct at76_card_config card_config;
 432
 433         enum board_type board_type;
 434         struct mib_fw_version fw_version;
 435
 436         unsigned int device_unplugged:1;
 437         unsigned int netdev_registered:1;
 438         struct set_mib_buffer mib_buf;  /* global buffer for set_mib calls */
 439
 440         int beacon_period;      /* period of mgmt beacons, Kus */
 441
 442         struct ieee80211_hw *hw;
 443         int mac80211_registered;
 444 };
 445
 446 #define AT76_SUPPORTED_FILTERS 0
 447
 448 #define SCAN_POLL_INTERVAL      (HZ / 4)
 449
 450 #define CMD_COMPLETION_TIMEOUT  (5 * HZ)
 451
 452 #define DEF_RTS_THRESHOLD       1536
 453 #define DEF_FRAG_THRESHOLD      1536
 454 #define DEF_SHORT_RETRY_LIMIT   8
 455 #define DEF_CHANNEL             10
 456 #define DEF_SCAN_MIN_TIME       10
 457 #define DEF_SCAN_MAX_TIME       120
 458
 459 /* the max padding size for tx in bytes (see calc_padding) */
 460 #define MAX_PADDING_SIZE        53
 461
 462 #endif                          /* _AT76_USB_H */