drivers/net/wireless/wl12xx/wl12xx.h

   1 /*
   2  * This file is part of wl1271
   3  *
   4  * Copyright (C) 1998-2009 Texas Instruments. All rights reserved.
   5  * Copyright (C) 2008-2009 Nokia Corporation
   6  *
   7  * Contact: Luciano Coelho <luciano.coelho@nokia.com>
   8  *
   9  * This program is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU General Public License
  11  * version 2 as published by the Free Software Foundation.
  12  *
  13  * This program is distributed in the hope that it will be useful, but
  14  * WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  21  * 02110-1301 USA
  22  *
  23  */
  24
  25 #ifndef __WL12XX_H__
  26 #define __WL12XX_H__
  27
  28 #include <linux/mutex.h>
  29 #include <linux/completion.h>
  30 #include <linux/spinlock.h>
  31 #include <linux/list.h>
  32 #include <linux/bitops.h>
  33 #include <net/mac80211.h>
  34
  35 #include "conf.h"
  36 #include "ini.h"
  37
  38 #define DRIVER_NAME "wl1271"
  39 #define DRIVER_PREFIX DRIVER_NAME ": "
  40
  41 /*
  42  * FW versions support BA 11n
  43  * versions marks x.x.x.50-60.x
  44  */
  45 #define WL12XX_BA_SUPPORT_FW_COST_VER2_START    50
  46 #define WL12XX_BA_SUPPORT_FW_COST_VER2_END      60
  47
  48 enum {
  49         DEBUG_NONE      = 0,
  50         DEBUG_IRQ       = BIT(0),
  51         DEBUG_SPI       = BIT(1),
  52         DEBUG_BOOT      = BIT(2),
  53         DEBUG_MAILBOX   = BIT(3),
  54         DEBUG_TESTMODE  = BIT(4),
  55         DEBUG_EVENT     = BIT(5),
  56         DEBUG_TX        = BIT(6),
  57         DEBUG_RX        = BIT(7),
  58         DEBUG_SCAN      = BIT(8),
  59         DEBUG_CRYPT     = BIT(9),
  60         DEBUG_PSM       = BIT(10),
  61         DEBUG_MAC80211  = BIT(11),
  62         DEBUG_CMD       = BIT(12),
  63         DEBUG_ACX       = BIT(13),
  64         DEBUG_SDIO      = BIT(14),
  65         DEBUG_FILTERS   = BIT(15),
  66         DEBUG_ADHOC     = BIT(16),
  67         DEBUG_AP        = BIT(17),
  68         DEBUG_MASTER    = (DEBUG_ADHOC | DEBUG_AP),
  69         DEBUG_ALL       = ~0,
  70 };
  71
  72 extern u32 wl12xx_debug_level;
  73
  74 #define DEBUG_DUMP_LIMIT 1024
  75
  76 #define wl1271_error(fmt, arg...) \
  77         pr_err(DRIVER_PREFIX "ERROR " fmt "\n", ##arg)
  78
  79 #define wl1271_warning(fmt, arg...) \
  80         pr_warning(DRIVER_PREFIX "WARNING " fmt "\n", ##arg)
  81
  82 #define wl1271_notice(fmt, arg...) \
  83         pr_info(DRIVER_PREFIX fmt "\n", ##arg)
  84
  85 #define wl1271_info(fmt, arg...) \
  86         pr_info(DRIVER_PREFIX fmt "\n", ##arg)
  87
  88 #define wl1271_debug(level, fmt, arg...) \
  89         do { \
  90                 if (level & wl12xx_debug_level) \
  91                         pr_debug(DRIVER_PREFIX fmt "\n", ##arg); \
  92         } while (0)
  93
  94 /* TODO: use pr_debug_hex_dump when it will be available */
  95 #define wl1271_dump(level, prefix, buf, len)    \
  96         do { \
  97                 if (level & wl12xx_debug_level) \
  98                         print_hex_dump(KERN_DEBUG, DRIVER_PREFIX prefix, \
  99                                        DUMP_PREFIX_OFFSET, 16, 1,       \
 100                                        buf,                             \
 101                                        min_t(size_t, len, DEBUG_DUMP_LIMIT), \
 102                                        0);                              \
 103         } while (0)
 104
 105 #define wl1271_dump_ascii(level, prefix, buf, len)      \
 106         do { \
 107                 if (level & wl12xx_debug_level) \
 108                         print_hex_dump(KERN_DEBUG, DRIVER_PREFIX prefix, \
 109                                        DUMP_PREFIX_OFFSET, 16, 1,       \
 110                                        buf,                             \
 111                                        min_t(size_t, len, DEBUG_DUMP_LIMIT), \
 112                                        true);                           \
 113         } while (0)
 114
 115 #define WL1271_DEFAULT_STA_RX_CONFIG (CFG_UNI_FILTER_EN |       \
 116                                   CFG_BSSID_FILTER_EN | \
 117                                   CFG_MC_FILTER_EN)
 118
 119 #define WL1271_DEFAULT_STA_RX_FILTER (CFG_RX_RCTS_ACK | CFG_RX_PRSP_EN |  \
 120                                   CFG_RX_MGMT_EN | CFG_RX_DATA_EN |   \
 121                                   CFG_RX_CTL_EN | CFG_RX_BCN_EN |     \
 122                                   CFG_RX_AUTH_EN | CFG_RX_ASSOC_EN)
 123
 124 #define WL1271_DEFAULT_AP_RX_CONFIG  0
 125
 126 #define WL1271_DEFAULT_AP_RX_FILTER  (CFG_RX_RCTS_ACK | CFG_RX_PREQ_EN | \
 127                                   CFG_RX_MGMT_EN | CFG_RX_DATA_EN | \
 128                                   CFG_RX_CTL_EN | CFG_RX_AUTH_EN | \
 129                                   CFG_RX_ASSOC_EN)
 130
 131
 132
 133 #define WL1271_FW_NAME "ti-connectivity/wl1271-fw-2.bin"
 134 #define WL1271_AP_FW_NAME "ti-connectivity/wl1271-fw-ap.bin"
 135
 136 #define WL1271_NVS_NAME "ti-connectivity/wl1271-nvs.bin"
 137
 138 #define WL1271_TX_SECURITY_LO16(s) ((u16)((s) & 0xffff))
 139 #define WL1271_TX_SECURITY_HI32(s) ((u32)(((s) >> 16) & 0xffffffff))
 140
 141 #define WL1271_CIPHER_SUITE_GEM 0x00147201
 142
 143 #define WL1271_BUSY_WORD_CNT 1
 144 #define WL1271_BUSY_WORD_LEN (WL1271_BUSY_WORD_CNT * sizeof(u32))
 145
 146 #define WL1271_ELP_HW_STATE_ASLEEP 0
 147 #define WL1271_ELP_HW_STATE_IRQ    1
 148
 149 #define WL1271_DEFAULT_BEACON_INT  100
 150 #define WL1271_DEFAULT_DTIM_PERIOD 1
 151
 152 #define WL1271_AP_GLOBAL_HLID      0
 153 #define WL1271_AP_BROADCAST_HLID   1
 154 #define WL1271_AP_STA_HLID_START   2
 155
 156 /*
 157  * When in AP-mode, we allow (at least) this number of mem-blocks
 158  * to be transmitted to FW for a STA in PS-mode. Only when packets are
 159  * present in the FW buffers it will wake the sleeping STA. We want to put
 160  * enough packets for the driver to transmit all of its buffered data before
 161  * the STA goes to sleep again. But we don't want to take too much mem-blocks
 162  * as it might hurt the throughput of active STAs.
 163  * The number of blocks (18) is enough for 2 large packets.
 164  */
 165 #define WL1271_PS_STA_MAX_BLOCKS  (2 * 9)
 166
 167 #define WL1271_AP_BSS_INDEX        0
 168 #define WL1271_AP_DEF_INACTIV_SEC  300
 169 #define WL1271_AP_DEF_BEACON_EXP   20
 170
 171 #define ACX_TX_DESCRIPTORS         32
 172
 173 #define WL1271_AGGR_BUFFER_SIZE (4 * PAGE_SIZE)
 174
 175 enum wl1271_state {
 176         WL1271_STATE_OFF,
 177         WL1271_STATE_ON,
 178         WL1271_STATE_PLT,
 179 };
 180
 181 enum wl1271_partition_type {
 182         PART_DOWN,
 183         PART_WORK,
 184         PART_DRPW,
 185
 186         PART_TABLE_LEN
 187 };
 188
 189 struct wl1271_partition {
 190         u32 size;
 191         u32 start;
 192 };
 193
 194 struct wl1271_partition_set {
 195         struct wl1271_partition mem;
 196         struct wl1271_partition reg;
 197         struct wl1271_partition mem2;
 198         struct wl1271_partition mem3;
 199 };
 200
 201 struct wl1271;
 202
 203 #define WL12XX_NUM_FW_VER 5
 204
 205 /* FIXME: I'm not sure about this structure name */
 206 struct wl1271_chip {
 207         u32 id;
 208         char fw_ver_str[ETHTOOL_BUSINFO_LEN];
 209         unsigned int fw_ver[WL12XX_NUM_FW_VER];
 210 };
 211
 212 struct wl1271_stats {
 213         struct acx_statistics *fw_stats;
 214         unsigned long fw_stats_update;
 215
 216         unsigned int retry_count;
 217         unsigned int excessive_retries;
 218 };
 219
 220 #define NUM_TX_QUEUES              4
 221 #define NUM_RX_PKT_DESC            8
 222
 223 #define AP_MAX_STATIONS            5
 224
 225 /* Broadcast and Global links + links to stations */
 226 #define AP_MAX_LINKS               (AP_MAX_STATIONS + 2)
 227
 228 /* FW status registers common for AP/STA */
 229 struct wl1271_fw_common_status {
 230         __le32 intr;
 231         u8  fw_rx_counter;
 232         u8  drv_rx_counter;
 233         u8  reserved;
 234         u8  tx_results_counter;
 235         __le32 rx_pkt_descs[NUM_RX_PKT_DESC];
 236         __le32 tx_released_blks[NUM_TX_QUEUES];
 237         __le32 fw_localtime;
 238 } __packed;
 239
 240 /* FW status registers for AP */
 241 struct wl1271_fw_ap_status {
 242         struct wl1271_fw_common_status common;
 243
 244         /* Next fields valid only in AP FW */
 245
 246         /*
 247          * A bitmap (where each bit represents a single HLID)
 248          * to indicate if the station is in PS mode.
 249          */
 250         __le32 link_ps_bitmap;
 251
 252         /* Number of freed MBs per HLID */
 253         u8 tx_lnk_free_blks[AP_MAX_LINKS];
 254         u8 padding_1[1];
 255 } __packed;
 256
 257 /* FW status registers for STA */
 258 struct wl1271_fw_sta_status {
 259         struct wl1271_fw_common_status common;
 260
 261         u8  tx_total;
 262         u8  reserved1;
 263         __le16 reserved2;
 264 } __packed;
 265
 266 struct wl1271_fw_full_status {
 267         union {
 268                 struct wl1271_fw_common_status common;
 269                 struct wl1271_fw_sta_status sta;
 270                 struct wl1271_fw_ap_status ap;
 271         };
 272 } __packed;
 273
 274
 275 struct wl1271_rx_mem_pool_addr {
 276         u32 addr;
 277         u32 addr_extra;
 278 };
 279
 280 struct wl1271_scan {
 281         struct cfg80211_scan_request *req;
 282         bool *scanned_ch;
 283         bool failed;
 284         u8 state;
 285         u8 ssid[IW_ESSID_MAX_SIZE+1];
 286         size_t ssid_len;
 287 };
 288
 289 struct wl1271_if_operations {
 290         void (*read)(struct wl1271 *wl, int addr, void *buf, size_t len,
 291                      bool fixed);
 292         void (*write)(struct wl1271 *wl, int addr, void *buf, size_t len,
 293                      bool fixed);
 294         void (*reset)(struct wl1271 *wl);
 295         void (*init)(struct wl1271 *wl);
 296         int (*power)(struct wl1271 *wl, bool enable);
 297         struct device* (*dev)(struct wl1271 *wl);
 298         void (*enable_irq)(struct wl1271 *wl);
 299         void (*disable_irq)(struct wl1271 *wl);
 300 };
 301
 302 #define MAX_NUM_KEYS 14
 303 #define MAX_KEY_SIZE 32
 304
 305 struct wl1271_ap_key {
 306         u8 id;
 307         u8 key_type;
 308         u8 key_size;
 309         u8 key[MAX_KEY_SIZE];
 310         u8 hlid;
 311         u32 tx_seq_32;
 312         u16 tx_seq_16;
 313 };
 314
 315 enum wl12xx_flags {
 316         WL1271_FLAG_STA_ASSOCIATED,
 317         WL1271_FLAG_JOINED,
 318         WL1271_FLAG_GPIO_POWER,
 319         WL1271_FLAG_TX_QUEUE_STOPPED,
 320         WL1271_FLAG_TX_PENDING,
 321         WL1271_FLAG_IN_ELP,
 322         WL1271_FLAG_PSM,
 323         WL1271_FLAG_PSM_REQUESTED,
 324         WL1271_FLAG_IRQ_RUNNING,
 325         WL1271_FLAG_IDLE,
 326         WL1271_FLAG_IDLE_REQUESTED,
 327         WL1271_FLAG_PSPOLL_FAILURE,
 328         WL1271_FLAG_STA_STATE_SENT,
 329         WL1271_FLAG_FW_TX_BUSY,
 330         WL1271_FLAG_AP_STARTED
 331 };
 332
 333 struct wl1271_link {
 334         /* AP-mode - TX queue per AC in link */
 335         struct sk_buff_head tx_queue[NUM_TX_QUEUES];
 336
 337         /* accounting for allocated / available TX blocks in FW */
 338         u8 allocated_blks;
 339         u8 prev_freed_blks;
 340
 341         u8 addr[ETH_ALEN];
 342 };
 343
 344 struct wl1271 {
 345         struct platform_device *plat_dev;
 346         struct ieee80211_hw *hw;
 347         bool mac80211_registered;
 348
 349         void *if_priv;
 350
 351         struct wl1271_if_operations *if_ops;
 352
 353         void (*set_power)(bool enable);
 354         int irq;
 355         int ref_clock;
 356
 357         spinlock_t wl_lock;
 358
 359         enum wl1271_state state;
 360         struct mutex mutex;
 361
 362         unsigned long flags;
 363
 364         struct wl1271_partition_set part;
 365
 366         struct wl1271_chip chip;
 367
 368         int cmd_box_addr;
 369         int event_box_addr;
 370
 371         u8 *fw;
 372         size_t fw_len;
 373         u8 fw_bss_type;
 374         struct wl1271_nvs_file *nvs;
 375         size_t nvs_len;
 376
 377         s8 hw_pg_ver;
 378
 379         u8 bssid[ETH_ALEN];
 380         u8 mac_addr[ETH_ALEN];
 381         u8 bss_type;
 382         u8 set_bss_type;
 383         u8 ssid[IW_ESSID_MAX_SIZE + 1];
 384         u8 ssid_len;
 385         int channel;
 386
 387         struct wl1271_acx_mem_map *target_mem_map;
 388
 389         /* Accounting for allocated / available TX blocks on HW */
 390         u32 tx_blocks_freed[NUM_TX_QUEUES];
 391         u32 tx_blocks_available;
 392         u32 tx_results_count;
 393
 394         /* Transmitted TX packets counter for chipset interface */
 395         u32 tx_packets_count;
 396
 397         /* Time-offset between host and chipset clocks */
 398         s64 time_offset;
 399
 400         /* Session counter for the chipset */
 401         int session_counter;
 402
 403         /* Frames scheduled for transmission, not handled yet */
 404         struct sk_buff_head tx_queue[NUM_TX_QUEUES];
 405         int tx_queue_count;
 406
 407         /* Frames received, not handled yet by mac80211 */
 408         struct sk_buff_head deferred_rx_queue;
 409
 410         /* Frames sent, not returned yet to mac80211 */
 411         struct sk_buff_head deferred_tx_queue;
 412
 413         struct work_struct tx_work;
 414
 415         /* Pending TX frames */
 416         unsigned long tx_frames_map[BITS_TO_LONGS(ACX_TX_DESCRIPTORS)];
 417         struct sk_buff *tx_frames[ACX_TX_DESCRIPTORS];
 418         int tx_frames_cnt;
 419
 420         /* Security sequence number counters */
 421         u8 tx_security_last_seq;
 422         s64 tx_security_seq;
 423
 424         /* FW Rx counter */
 425         u32 rx_counter;
 426
 427         /* Rx memory pool address */
 428         struct wl1271_rx_mem_pool_addr rx_mem_pool_addr;
 429
 430         /* Intermediate buffer, used for packet aggregation */
 431         u8 *aggr_buf;
 432
 433         /* Network stack work  */
 434         struct work_struct netstack_work;
 435
 436         /* Hardware recovery work */
 437         struct work_struct recovery_work;
 438
 439         /* The mbox event mask */
 440         u32 event_mask;
 441
 442         /* Mailbox pointers */
 443         u32 mbox_ptr[2];
 444
 445         /* Are we currently scanning */
 446         struct wl1271_scan scan;
 447         struct delayed_work scan_complete_work;
 448
 449         /* probe-req template for the current AP */
 450         struct sk_buff *probereq;
 451
 452         /* Our association ID */
 453         u16 aid;
 454
 455         /*
 456          * currently configured rate set:
 457          *      bits  0-15 - 802.11abg rates
 458          *      bits 16-23 - 802.11n   MCS index mask
 459          * support only 1 stream, thus only 8 bits for the MCS rates (0-7).
 460          */
 461         u32 basic_rate_set;
 462         u32 basic_rate;
 463         u32 rate_set;
 464
 465         /* The current band */
 466         enum ieee80211_band band;
 467
 468         /* Beaconing interval (needed for ad-hoc) */
 469         u32 beacon_int;
 470
 471         /* Default key (for WEP) */
 472         u32 default_key;
 473
 474         unsigned int filters;
 475         unsigned int rx_config;
 476         unsigned int rx_filter;
 477
 478         struct completion *elp_compl;
 479         struct delayed_work elp_work;
 480         struct delayed_work pspoll_work;
 481
 482         /* counter for ps-poll delivery failures */
 483         int ps_poll_failures;
 484
 485         /* retry counter for PSM entries */
 486         u8 psm_entry_retry;
 487
 488         /* in dBm */
 489         int power_level;
 490
 491         int rssi_thold;
 492         int last_rssi_event;
 493
 494         struct wl1271_stats stats;
 495
 496         __le32 buffer_32;
 497         u32 buffer_cmd;
 498         u32 buffer_busyword[WL1271_BUSY_WORD_CNT];
 499
 500         struct wl1271_fw_full_status *fw_status;
 501         struct wl1271_tx_hw_res_if *tx_res_if;
 502
 503         struct ieee80211_vif *vif;
 504
 505         /* Current chipset configuration */
 506         struct conf_drv_settings conf;
 507
 508         bool sg_enabled;
 509
 510         bool enable_11a;
 511
 512         struct list_head list;
 513
 514         /* Most recently reported noise in dBm */
 515         s8 noise;
 516
 517         /* map for HLIDs of associated stations - when operating in AP mode */
 518         unsigned long ap_hlid_map[BITS_TO_LONGS(AP_MAX_STATIONS)];
 519
 520         /* recoreded keys for AP-mode - set here before AP startup */
 521         struct wl1271_ap_key *recorded_ap_keys[MAX_NUM_KEYS];
 522
 523         /* bands supported by this instance of wl12xx */
 524         struct ieee80211_supported_band bands[IEEE80211_NUM_BANDS];
 525
 526         /* RX BA constraint value */
 527         bool ba_support;
 528         u8 ba_rx_bitmap;
 529
 530         /*
 531          * AP-mode - links indexed by HLID. The global and broadcast links
 532          * are always active.
 533          */
 534         struct wl1271_link links[AP_MAX_LINKS];
 535
 536         /* the hlid of the link where the last transmitted skb came from */
 537         int last_tx_hlid;
 538
 539         /* AP-mode - a bitmap of links currently in PS mode according to FW */
 540         u32 ap_fw_ps_map;
 541
 542         /* AP-mode - a bitmap of links currently in PS mode in mac80211 */
 543         unsigned long ap_ps_map;
 544
 545         /* Quirks of specific hardware revisions */
 546         unsigned int quirks;
 547 };
 548
 549 struct wl1271_station {
 550         u8 hlid;
 551 };
 552
 553 int wl1271_plt_start(struct wl1271 *wl);
 554 int wl1271_plt_stop(struct wl1271 *wl);
 555
 556 #define JOIN_TIMEOUT 5000 /* 5000 milliseconds to join */
 557
 558 #define SESSION_COUNTER_MAX 7 /* maximum value for the session counter */
 559
 560 #define WL1271_DEFAULT_POWER_LEVEL 0
 561
 562 #define WL1271_TX_QUEUE_LOW_WATERMARK  10
 563 #define WL1271_TX_QUEUE_HIGH_WATERMARK 25
 564
 565 #define WL1271_DEFERRED_QUEUE_LIMIT    64
 566
 567 /* WL1271 needs a 200ms sleep after power on, and a 20ms sleep before power
 568    on in case is has been shut down shortly before */
 569 #define WL1271_PRE_POWER_ON_SLEEP 20 /* in milliseconds */
 570 #define WL1271_POWER_ON_SLEEP 200 /* in milliseconds */
 571
 572 /* Macros to handle wl1271.sta_rate_set */
 573 #define HW_BG_RATES_MASK        0xffff
 574 #define HW_HT_RATES_OFFSET      16
 575
 576 /* Quirks */
 577
 578 /* Each RX/TX transaction requires an end-of-transaction transfer */
 579 #define WL12XX_QUIRK_END_OF_TRANSACTION BIT(0)
 580
 581 #endif