1 /* 2 * Copyright (C) 2008, cozybit Inc. 3 * Copyright (C) 2007, Red Hat, Inc. 4 * Copyright (C) 2003-2006, Marvell International Ltd. 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or (at 9 * your option) any later version. 10 */ 11 #include <linux/spinlock.h> 12 #include <linux/device.h> 13 #include <linux/kthread.h> 14 #include <net/mac80211.h> 15 16 #include "deb_defs.h" 17 18 #ifndef DRV_NAME 19 #define DRV_NAME "libertas_tf" 20 #endif 21 22 #define MRVL_DEFAULT_RETRIES 9 23 #define MRVL_PER_PACKET_RATE 0x10 24 #define MRVL_MAX_BCN_SIZE 440 25 #define CMD_OPTION_WAITFORRSP 0x0002 26 27 /* Return command are almost always the same as the host command, but with 28 * bit 15 set high. There are a few exceptions, though... 29 */ 30 #define CMD_RET(cmd) (0x8000 | cmd) 31 32 /* Command codes */ 33 #define CMD_GET_HW_SPEC 0x0003 34 #define CMD_802_11_RESET 0x0005 35 #define CMD_MAC_MULTICAST_ADR 0x0010 36 #define CMD_802_11_RADIO_CONTROL 0x001c 37 #define CMD_802_11_RF_CHANNEL 0x001d 38 #define CMD_802_11_RF_TX_POWER 0x001e 39 #define CMD_MAC_CONTROL 0x0028 40 #define CMD_802_11_MAC_ADDRESS 0x004d 41 #define CMD_SET_BOOT2_VER 0x00a5 42 #define CMD_802_11_BEACON_CTRL 0x00b0 43 #define CMD_802_11_BEACON_SET 0x00cb 44 #define CMD_802_11_SET_MODE 0x00cc 45 #define CMD_802_11_SET_BSSID 0x00cd 46 47 #define CMD_ACT_GET 0x0000 48 #define CMD_ACT_SET 0x0001 49 50 /* Define action or option for CMD_802_11_RESET */ 51 #define CMD_ACT_HALT 0x0003 52 53 /* Define action or option for CMD_MAC_CONTROL */ 54 #define CMD_ACT_MAC_RX_ON 0x0001 55 #define CMD_ACT_MAC_TX_ON 0x0002 56 #define CMD_ACT_MAC_MULTICAST_ENABLE 0x0020 57 #define CMD_ACT_MAC_BROADCAST_ENABLE 0x0040 58 #define CMD_ACT_MAC_PROMISCUOUS_ENABLE 0x0080 59 #define CMD_ACT_MAC_ALL_MULTICAST_ENABLE 0x0100 60 61 /* Define action or option for CMD_802_11_RADIO_CONTROL */ 62 #define CMD_TYPE_AUTO_PREAMBLE 0x0001 63 #define CMD_TYPE_SHORT_PREAMBLE 0x0002 64 #define CMD_TYPE_LONG_PREAMBLE 0x0003 65 66 #define TURN_ON_RF 0x01 67 #define RADIO_ON 0x01 68 #define RADIO_OFF 0x00 69 70 #define SET_AUTO_PREAMBLE 0x05 71 #define SET_SHORT_PREAMBLE 0x03 72 #define SET_LONG_PREAMBLE 0x01 73 74 /* Define action or option for CMD_802_11_RF_CHANNEL */ 75 #define CMD_OPT_802_11_RF_CHANNEL_GET 0x00 76 #define CMD_OPT_802_11_RF_CHANNEL_SET 0x01 77 78 /* Codes for CMD_802_11_SET_MODE */ 79 enum lbtf_mode { 80 LBTF_PASSIVE_MODE, 81 LBTF_STA_MODE, 82 LBTF_AP_MODE, 83 }; 84 85 /** Card Event definition */ 86 #define MACREG_INT_CODE_FIRMWARE_READY 48 87 /** Buffer Constants */ 88 89 /* The size of SQ memory PPA, DPA are 8 DWORDs, that keep the physical 90 * addresses of TxPD buffers. Station has only 8 TxPD available, Whereas 91 * driver has more local TxPDs. Each TxPD on the host memory is associated 92 * with a Tx control node. The driver maintains 8 RxPD descriptors for 93 * station firmware to store Rx packet information. 94 * 95 * Current version of MAC has a 32x6 multicast address buffer. 96 * 97 * 802.11b can have up to 14 channels, the driver keeps the 98 * BSSID(MAC address) of each APs or Ad hoc stations it has sensed. 99 */ 100 101 #define MRVDRV_MAX_MULTICAST_LIST_SIZE 32 102 #define LBS_NUM_CMD_BUFFERS 10 103 #define LBS_CMD_BUFFER_SIZE (2 * 1024) 104 #define MRVDRV_MAX_CHANNEL_SIZE 14 105 #define MRVDRV_SNAP_HEADER_LEN 8 106 107 #define LBS_UPLD_SIZE 2312 108 #define DEV_NAME_LEN 32 109 110 /** Misc constants */ 111 /* This section defines 802.11 specific contants */ 112 113 #define MRVDRV_MAX_REGION_CODE 6 114 /** 115 * the table to keep region code 116 */ 117 #define LBTF_REGDOMAIN_US 0x10 118 #define LBTF_REGDOMAIN_CA 0x20 119 #define LBTF_REGDOMAIN_EU 0x30 120 #define LBTF_REGDOMAIN_SP 0x31 121 #define LBTF_REGDOMAIN_FR 0x32 122 #define LBTF_REGDOMAIN_JP 0x40 123 124 #define SBI_EVENT_CAUSE_SHIFT 3 125 126 /** RxPD status */ 127 128 #define MRVDRV_RXPD_STATUS_OK 0x0001 129 130 131 /* This is for firmware specific length */ 132 #define EXTRA_LEN 36 133 134 #define MRVDRV_ETH_TX_PACKET_BUFFER_SIZE \ 135 (ETH_FRAME_LEN + sizeof(struct txpd) + EXTRA_LEN) 136 137 #define MRVDRV_ETH_RX_PACKET_BUFFER_SIZE \ 138 (ETH_FRAME_LEN + sizeof(struct rxpd) \ 139 + MRVDRV_SNAP_HEADER_LEN + EXTRA_LEN) 140 141 #define CMD_F_HOSTCMD (1 << 0) 142 #define FW_CAPINFO_WPA (1 << 0) 143 144 #define RF_ANTENNA_1 0x1 145 #define RF_ANTENNA_2 0x2 146 #define RF_ANTENNA_AUTO 0xFFFF 147 148 #define LBTF_EVENT_BCN_SENT 55 149 150 /** Global Variable Declaration */ 151 /** mv_ms_type */ 152 enum mv_ms_type { 153 MVMS_DAT = 0, 154 MVMS_CMD = 1, 155 MVMS_TXDONE = 2, 156 MVMS_EVENT 157 }; 158 159 extern struct workqueue_struct *lbtf_wq; 160 161 struct lbtf_private; 162 163 struct lbtf_offset_value { 164 u32 offset; 165 u32 value; 166 }; 167 168 struct channel_range { 169 u8 regdomain; 170 u8 start; 171 u8 end; /* exclusive (channel must be less than end) */ 172 }; 173 174 struct if_usb_card; 175 176 /** Private structure for the MV device */ 177 struct lbtf_private { 178 void *card; 179 struct ieee80211_hw *hw; 180 181 /* Command response buffer */ 182 u8 cmd_resp_buff[LBS_UPLD_SIZE]; 183 /* Download sent: 184 bit0 1/0=data_sent/data_tx_done, 185 bit1 1/0=cmd_sent/cmd_tx_done, 186 all other bits reserved 0 */ 187 struct ieee80211_vif *vif; 188 189 struct work_struct cmd_work; 190 struct work_struct tx_work; 191 /** Hardware access */ 192 int (*hw_host_to_card) (struct lbtf_private *priv, u8 type, u8 *payload, u16 nb); 193 int (*hw_prog_firmware) (struct if_usb_card *cardp); 194 int (*hw_reset_device) (struct if_usb_card *cardp); 195 196 197 /** Wlan adapter data structure*/ 198 /** STATUS variables */ 199 u32 fwrelease; 200 u32 fwcapinfo; 201 /* protected with big lock */ 202 203 struct mutex lock; 204 205 /** command-related variables */ 206 u16 seqnum; 207 /* protected by big lock */ 208 209 struct cmd_ctrl_node *cmd_array; 210 /** Current command */ 211 struct cmd_ctrl_node *cur_cmd; 212 /** command Queues */ 213 /** Free command buffers */ 214 struct list_head cmdfreeq; 215 /** Pending command buffers */ 216 struct list_head cmdpendingq; 217 218 /** spin locks */ 219 spinlock_t driver_lock; 220 221 /** Timers */ 222 struct timer_list command_timer; 223 int nr_retries; 224 int cmd_timed_out; 225 226 u8 cmd_response_rxed; 227 228 /** capability Info used in Association, start, join */ 229 u16 capability; 230 231 /** MAC address information */ 232 u8 current_addr[ETH_ALEN]; 233 u8 multicastlist[MRVDRV_MAX_MULTICAST_LIST_SIZE][ETH_ALEN]; 234 u32 nr_of_multicastmacaddr; 235 int cur_freq; 236 237 struct sk_buff *skb_to_tx; 238 struct sk_buff *tx_skb; 239 240 /** NIC Operation characteristics */ 241 u16 mac_control; 242 u16 regioncode; 243 struct channel_range range; 244 245 u8 radioon; 246 u32 preamble; 247 248 struct ieee80211_channel channels[14]; 249 struct ieee80211_rate rates[12]; 250 struct ieee80211_supported_band band; 251 struct lbtf_offset_value offsetvalue; 252 253 u8 fw_ready; 254 u8 surpriseremoved; 255 struct sk_buff_head bc_ps_buf; 256 257 /* Most recently reported noise in dBm */ 258 s8 noise; 259 }; 260 261 /* 802.11-related definitions */ 262 263 /* TxPD descriptor */ 264 struct txpd { 265 /* Current Tx packet status */ 266 __le32 tx_status; 267 /* Tx control */ 268 __le32 tx_control; 269 __le32 tx_packet_location; 270 /* Tx packet length */ 271 __le16 tx_packet_length; 272 /* First 2 byte of destination MAC address */ 273 u8 tx_dest_addr_high[2]; 274 /* Last 4 byte of destination MAC address */ 275 u8 tx_dest_addr_low[4]; 276 /* Pkt Priority */ 277 u8 priority; 278 /* Pkt Trasnit Power control */ 279 u8 powermgmt; 280 /* Time the packet has been queued in the driver (units = 2ms) */ 281 u8 pktdelay_2ms; 282 /* reserved */ 283 u8 reserved1; 284 }; 285 286 /* RxPD Descriptor */ 287 struct rxpd { 288 /* Current Rx packet status */ 289 __le16 status; 290 291 /* SNR */ 292 u8 snr; 293 294 /* Tx control */ 295 u8 rx_control; 296 297 /* Pkt length */ 298 __le16 pkt_len; 299 300 /* Noise Floor */ 301 u8 nf; 302 303 /* Rx Packet Rate */ 304 u8 rx_rate; 305 306 /* Pkt addr */ 307 __le32 pkt_ptr; 308 309 /* Next Rx RxPD addr */ 310 __le32 next_rxpd_ptr; 311 312 /* Pkt Priority */ 313 u8 priority; 314 u8 reserved[3]; 315 }; 316 317 struct cmd_header { 318 __le16 command; 319 __le16 size; 320 __le16 seqnum; 321 __le16 result; 322 } __packed; 323 324 struct cmd_ctrl_node { 325 struct list_head list; 326 int result; 327 /* command response */ 328 int (*callback)(struct lbtf_private *, 329 unsigned long, struct cmd_header *); 330 unsigned long callback_arg; 331 /* command data */ 332 struct cmd_header *cmdbuf; 333 /* wait queue */ 334 u16 cmdwaitqwoken; 335 wait_queue_head_t cmdwait_q; 336 }; 337 338 /* 339 * Define data structure for CMD_GET_HW_SPEC 340 * This structure defines the response for the GET_HW_SPEC command 341 */ 342 struct cmd_ds_get_hw_spec { 343 struct cmd_header hdr; 344 345 /* HW Interface version number */ 346 __le16 hwifversion; 347 /* HW version number */ 348 __le16 version; 349 /* Max number of TxPD FW can handle */ 350 __le16 nr_txpd; 351 /* Max no of Multicast address */ 352 __le16 nr_mcast_adr; 353 /* MAC address */ 354 u8 permanentaddr[6]; 355 356 /* region Code */ 357 __le16 regioncode; 358 359 /* Number of antenna used */ 360 __le16 nr_antenna; 361 362 /* FW release number, example 0x01030304 = 2.3.4p1 */ 363 __le32 fwrelease; 364 365 /* Base Address of TxPD queue */ 366 __le32 wcb_base; 367 /* Read Pointer of RxPd queue */ 368 __le32 rxpd_rdptr; 369 370 /* Write Pointer of RxPd queue */ 371 __le32 rxpd_wrptr; 372 373 /*FW/HW capability */ 374 __le32 fwcapinfo; 375 } __packed; 376 377 struct cmd_ds_mac_control { 378 struct cmd_header hdr; 379 __le16 action; 380 u16 reserved; 381 }; 382 383 struct cmd_ds_802_11_mac_address { 384 struct cmd_header hdr; 385 386 __le16 action; 387 uint8_t macadd[ETH_ALEN]; 388 }; 389 390 struct cmd_ds_mac_multicast_addr { 391 struct cmd_header hdr; 392 393 __le16 action; 394 __le16 nr_of_adrs; 395 u8 maclist[ETH_ALEN * MRVDRV_MAX_MULTICAST_LIST_SIZE]; 396 }; 397 398 struct cmd_ds_set_mode { 399 struct cmd_header hdr; 400 401 __le16 mode; 402 }; 403 404 struct cmd_ds_set_bssid { 405 struct cmd_header hdr; 406 407 u8 bssid[6]; 408 u8 activate; 409 }; 410 411 struct cmd_ds_802_11_radio_control { 412 struct cmd_header hdr; 413 414 __le16 action; 415 __le16 control; 416 }; 417 418 419 struct cmd_ds_802_11_rf_channel { 420 struct cmd_header hdr; 421 422 __le16 action; 423 __le16 channel; 424 __le16 rftype; /* unused */ 425 __le16 reserved; /* unused */ 426 u8 channellist[32]; /* unused */ 427 }; 428 429 struct cmd_ds_set_boot2_ver { 430 struct cmd_header hdr; 431 432 __le16 action; 433 __le16 version; 434 }; 435 436 struct cmd_ds_802_11_reset { 437 struct cmd_header hdr; 438 439 __le16 action; 440 }; 441 442 struct cmd_ds_802_11_beacon_control { 443 struct cmd_header hdr; 444 445 __le16 action; 446 __le16 beacon_enable; 447 __le16 beacon_period; 448 }; 449 450 struct cmd_ds_802_11_beacon_set { 451 struct cmd_header hdr; 452 453 __le16 len; 454 u8 beacon[MRVL_MAX_BCN_SIZE]; 455 }; 456 457 struct lbtf_private; 458 struct cmd_ctrl_node; 459 460 /** Function Prototype Declaration */ 461 void lbtf_set_mac_control(struct lbtf_private *priv); 462 463 int lbtf_free_cmd_buffer(struct lbtf_private *priv); 464 465 int lbtf_allocate_cmd_buffer(struct lbtf_private *priv); 466 int lbtf_execute_next_command(struct lbtf_private *priv); 467 int lbtf_set_radio_control(struct lbtf_private *priv); 468 int lbtf_update_hw_spec(struct lbtf_private *priv); 469 int lbtf_cmd_set_mac_multicast_addr(struct lbtf_private *priv); 470 void lbtf_set_mode(struct lbtf_private *priv, enum lbtf_mode mode); 471 void lbtf_set_bssid(struct lbtf_private *priv, bool activate, const u8 *bssid); 472 int lbtf_set_mac_address(struct lbtf_private *priv, uint8_t *mac_addr); 473 474 int lbtf_set_channel(struct lbtf_private *priv, u8 channel); 475 476 int lbtf_beacon_set(struct lbtf_private *priv, struct sk_buff *beacon); 477 int lbtf_beacon_ctrl(struct lbtf_private *priv, bool beacon_enable, 478 int beacon_int); 479 480 481 int lbtf_process_rx_command(struct lbtf_private *priv); 482 void lbtf_complete_command(struct lbtf_private *priv, struct cmd_ctrl_node *cmd, 483 int result); 484 void lbtf_cmd_response_rx(struct lbtf_private *priv); 485 486 /* main.c */ 487 struct chan_freq_power *lbtf_get_region_cfp_table(u8 region, 488 int *cfp_no); 489 struct lbtf_private *lbtf_add_card(void *card, struct device *dmdev); 490 int lbtf_remove_card(struct lbtf_private *priv); 491 int lbtf_start_card(struct lbtf_private *priv); 492 int lbtf_rx(struct lbtf_private *priv, struct sk_buff *skb); 493 void lbtf_send_tx_feedback(struct lbtf_private *priv, u8 retrycnt, u8 fail); 494 void lbtf_bcn_sent(struct lbtf_private *priv); 495 496 /* support functions for cmd.c */ 497 /* lbtf_cmd() infers the size of the buffer to copy data back into, from 498 the size of the target of the pointer. Since the command to be sent 499 may often be smaller, that size is set in cmd->size by the caller.*/ 500 #define lbtf_cmd(priv, cmdnr, cmd, cb, cb_arg) ({ \ 501 uint16_t __sz = le16_to_cpu((cmd)->hdr.size); \ 502 (cmd)->hdr.size = cpu_to_le16(sizeof(*(cmd))); \ 503 __lbtf_cmd(priv, cmdnr, &(cmd)->hdr, __sz, cb, cb_arg); \ 504 }) 505 506 #define lbtf_cmd_with_response(priv, cmdnr, cmd) \ 507 lbtf_cmd(priv, cmdnr, cmd, lbtf_cmd_copyback, (unsigned long) (cmd)) 508 509 void lbtf_cmd_async(struct lbtf_private *priv, uint16_t command, 510 struct cmd_header *in_cmd, int in_cmd_size); 511 512 int __lbtf_cmd(struct lbtf_private *priv, uint16_t command, 513 struct cmd_header *in_cmd, int in_cmd_size, 514 int (*callback)(struct lbtf_private *, unsigned long, 515 struct cmd_header *), 516 unsigned long callback_arg); 517 518 int lbtf_cmd_copyback(struct lbtf_private *priv, unsigned long extra, 519 struct cmd_header *resp); 520