drivers/net/wireless/wl12xx/wl1271.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 __WL1271_H__
  26 #define __WL1271_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 "wl1271_conf.h"
  36
  37 #define DRIVER_NAME "wl1271"
  38 #define DRIVER_PREFIX DRIVER_NAME ": "
  39
  40 enum {
  41         DEBUG_NONE      = 0,
  42         DEBUG_IRQ       = BIT(0),
  43         DEBUG_SPI       = BIT(1),
  44         DEBUG_BOOT      = BIT(2),
  45         DEBUG_MAILBOX   = BIT(3),
  46         DEBUG_NETLINK   = BIT(4),
  47         DEBUG_EVENT     = BIT(5),
  48         DEBUG_TX        = BIT(6),
  49         DEBUG_RX        = BIT(7),
  50         DEBUG_SCAN      = BIT(8),
  51         DEBUG_CRYPT     = BIT(9),
  52         DEBUG_PSM       = BIT(10),
  53         DEBUG_MAC80211  = BIT(11),
  54         DEBUG_CMD       = BIT(12),
  55         DEBUG_ACX       = BIT(13),
  56         DEBUG_ALL       = ~0,
  57 };
  58
  59 #define DEBUG_LEVEL (DEBUG_NONE)
  60
  61 #define DEBUG_DUMP_LIMIT 1024
  62
  63 #define wl1271_error(fmt, arg...) \
  64         printk(KERN_ERR DRIVER_PREFIX "ERROR " fmt "\n", ##arg)
  65
  66 #define wl1271_warning(fmt, arg...) \
  67         printk(KERN_WARNING DRIVER_PREFIX "WARNING " fmt "\n", ##arg)
  68
  69 #define wl1271_notice(fmt, arg...) \
  70         printk(KERN_INFO DRIVER_PREFIX fmt "\n", ##arg)
  71
  72 #define wl1271_info(fmt, arg...) \
  73         printk(KERN_DEBUG DRIVER_PREFIX fmt "\n", ##arg)
  74
  75 #define wl1271_debug(level, fmt, arg...) \
  76         do { \
  77                 if (level & DEBUG_LEVEL) \
  78                         printk(KERN_DEBUG DRIVER_PREFIX fmt "\n", ##arg); \
  79         } while (0)
  80
  81 #define wl1271_dump(level, prefix, buf, len)    \
  82         do { \
  83                 if (level & DEBUG_LEVEL) \
  84                         print_hex_dump(KERN_DEBUG, DRIVER_PREFIX prefix, \
  85                                        DUMP_PREFIX_OFFSET, 16, 1,       \
  86                                        buf,                             \
  87                                        min_t(size_t, len, DEBUG_DUMP_LIMIT), \
  88                                        0);                              \
  89         } while (0)
  90
  91 #define wl1271_dump_ascii(level, prefix, buf, len)      \
  92         do { \
  93                 if (level & DEBUG_LEVEL) \
  94                         print_hex_dump(KERN_DEBUG, DRIVER_PREFIX prefix, \
  95                                        DUMP_PREFIX_OFFSET, 16, 1,       \
  96                                        buf,                             \
  97                                        min_t(size_t, len, DEBUG_DUMP_LIMIT), \
  98                                        true);                           \
  99         } while (0)
 100
 101 #define WL1271_DEFAULT_RX_CONFIG (CFG_UNI_FILTER_EN |   \
 102                                   CFG_BSSID_FILTER_EN | \
 103                                   CFG_MC_FILTER_EN)
 104
 105 #define WL1271_DEFAULT_RX_FILTER (CFG_RX_RCTS_ACK | CFG_RX_PRSP_EN |  \
 106                                   CFG_RX_MGMT_EN | CFG_RX_DATA_EN |   \
 107                                   CFG_RX_CTL_EN | CFG_RX_BCN_EN |     \
 108                                   CFG_RX_AUTH_EN | CFG_RX_ASSOC_EN)
 109
 110 #define WL1271_DEFAULT_BASIC_RATE_SET (CONF_TX_RATE_MASK_ALL)
 111
 112 #define WL1271_FW_NAME "wl1271-fw.bin"
 113 #define WL1271_NVS_NAME "wl1271-nvs.bin"
 114
 115 /*
 116  * Enable/disable 802.11a support for WL1273
 117  */
 118 #undef WL1271_80211A_ENABLED
 119
 120 /*
 121  * FIXME: for the wl1271, a busy word count of 1 here will result in a more
 122  * optimal SPI interface. There is some SPI bug however, causing RXS time outs
 123  * with this mode occasionally on boot, so lets have three for now. A value of
 124  * three should make sure, that the chipset will always be ready, though this
 125  * will impact throughput and latencies slightly.
 126  */
 127 #define WL1271_BUSY_WORD_CNT 3
 128 #define WL1271_BUSY_WORD_LEN (WL1271_BUSY_WORD_CNT * sizeof(u32))
 129
 130 #define WL1271_ELP_HW_STATE_ASLEEP 0
 131 #define WL1271_ELP_HW_STATE_IRQ    1
 132
 133 #define WL1271_DEFAULT_BEACON_INT  100
 134 #define WL1271_DEFAULT_DTIM_PERIOD 1
 135
 136 #define ACX_TX_DESCRIPTORS         32
 137
 138 enum wl1271_state {
 139         WL1271_STATE_OFF,
 140         WL1271_STATE_ON,
 141         WL1271_STATE_PLT,
 142 };
 143
 144 enum wl1271_partition_type {
 145         PART_DOWN,
 146         PART_WORK,
 147         PART_DRPW,
 148
 149         PART_TABLE_LEN
 150 };
 151
 152 struct wl1271_partition {
 153         u32 size;
 154         u32 start;
 155 };
 156
 157 struct wl1271_partition_set {
 158         struct wl1271_partition mem;
 159         struct wl1271_partition reg;
 160         struct wl1271_partition mem2;
 161         struct wl1271_partition mem3;
 162 };
 163
 164 struct wl1271;
 165
 166 /* FIXME: I'm not sure about this structure name */
 167 struct wl1271_chip {
 168         u32 id;
 169         char fw_ver[21];
 170 };
 171
 172 struct wl1271_stats {
 173         struct acx_statistics *fw_stats;
 174         unsigned long fw_stats_update;
 175
 176         unsigned int retry_count;
 177         unsigned int excessive_retries;
 178 };
 179
 180 struct wl1271_debugfs {
 181         struct dentry *rootdir;
 182         struct dentry *fw_statistics;
 183
 184         struct dentry *tx_internal_desc_overflow;
 185
 186         struct dentry *rx_out_of_mem;
 187         struct dentry *rx_hdr_overflow;
 188         struct dentry *rx_hw_stuck;
 189         struct dentry *rx_dropped;
 190         struct dentry *rx_fcs_err;
 191         struct dentry *rx_xfr_hint_trig;
 192         struct dentry *rx_path_reset;
 193         struct dentry *rx_reset_counter;
 194
 195         struct dentry *dma_rx_requested;
 196         struct dentry *dma_rx_errors;
 197         struct dentry *dma_tx_requested;
 198         struct dentry *dma_tx_errors;
 199
 200         struct dentry *isr_cmd_cmplt;
 201         struct dentry *isr_fiqs;
 202         struct dentry *isr_rx_headers;
 203         struct dentry *isr_rx_mem_overflow;
 204         struct dentry *isr_rx_rdys;
 205         struct dentry *isr_irqs;
 206         struct dentry *isr_tx_procs;
 207         struct dentry *isr_decrypt_done;
 208         struct dentry *isr_dma0_done;
 209         struct dentry *isr_dma1_done;
 210         struct dentry *isr_tx_exch_complete;
 211         struct dentry *isr_commands;
 212         struct dentry *isr_rx_procs;
 213         struct dentry *isr_hw_pm_mode_changes;
 214         struct dentry *isr_host_acknowledges;
 215         struct dentry *isr_pci_pm;
 216         struct dentry *isr_wakeups;
 217         struct dentry *isr_low_rssi;
 218
 219         struct dentry *wep_addr_key_count;
 220         struct dentry *wep_default_key_count;
 221         /* skipping wep.reserved */
 222         struct dentry *wep_key_not_found;
 223         struct dentry *wep_decrypt_fail;
 224         struct dentry *wep_packets;
 225         struct dentry *wep_interrupt;
 226
 227         struct dentry *pwr_ps_enter;
 228         struct dentry *pwr_elp_enter;
 229         struct dentry *pwr_missing_bcns;
 230         struct dentry *pwr_wake_on_host;
 231         struct dentry *pwr_wake_on_timer_exp;
 232         struct dentry *pwr_tx_with_ps;
 233         struct dentry *pwr_tx_without_ps;
 234         struct dentry *pwr_rcvd_beacons;
 235         struct dentry *pwr_power_save_off;
 236         struct dentry *pwr_enable_ps;
 237         struct dentry *pwr_disable_ps;
 238         struct dentry *pwr_fix_tsf_ps;
 239         /* skipping cont_miss_bcns_spread for now */
 240         struct dentry *pwr_rcvd_awake_beacons;
 241
 242         struct dentry *mic_rx_pkts;
 243         struct dentry *mic_calc_failure;
 244
 245         struct dentry *aes_encrypt_fail;
 246         struct dentry *aes_decrypt_fail;
 247         struct dentry *aes_encrypt_packets;
 248         struct dentry *aes_decrypt_packets;
 249         struct dentry *aes_encrypt_interrupt;
 250         struct dentry *aes_decrypt_interrupt;
 251
 252         struct dentry *event_heart_beat;
 253         struct dentry *event_calibration;
 254         struct dentry *event_rx_mismatch;
 255         struct dentry *event_rx_mem_empty;
 256         struct dentry *event_rx_pool;
 257         struct dentry *event_oom_late;
 258         struct dentry *event_phy_transmit_error;
 259         struct dentry *event_tx_stuck;
 260
 261         struct dentry *ps_pspoll_timeouts;
 262         struct dentry *ps_upsd_timeouts;
 263         struct dentry *ps_upsd_max_sptime;
 264         struct dentry *ps_upsd_max_apturn;
 265         struct dentry *ps_pspoll_max_apturn;
 266         struct dentry *ps_pspoll_utilization;
 267         struct dentry *ps_upsd_utilization;
 268
 269         struct dentry *rxpipe_rx_prep_beacon_drop;
 270         struct dentry *rxpipe_descr_host_int_trig_rx_data;
 271         struct dentry *rxpipe_beacon_buffer_thres_host_int_trig_rx_data;
 272         struct dentry *rxpipe_missed_beacon_host_int_trig_rx_data;
 273         struct dentry *rxpipe_tx_xfr_host_int_trig_rx_data;
 274
 275         struct dentry *tx_queue_len;
 276
 277         struct dentry *retry_count;
 278         struct dentry *excessive_retries;
 279 };
 280
 281 #define NUM_TX_QUEUES              4
 282 #define NUM_RX_PKT_DESC            8
 283
 284 /* FW status registers */
 285 struct wl1271_fw_status {
 286         u32 intr;
 287         u8  fw_rx_counter;
 288         u8  drv_rx_counter;
 289         u8  reserved;
 290         u8  tx_results_counter;
 291         u32 rx_pkt_descs[NUM_RX_PKT_DESC];
 292         u32 tx_released_blks[NUM_TX_QUEUES];
 293         u32 fw_localtime;
 294         u32 padding[2];
 295 } __attribute__ ((packed));
 296
 297 struct wl1271_rx_mem_pool_addr {
 298         u32 addr;
 299         u32 addr_extra;
 300 };
 301
 302 struct wl1271_scan {
 303         u8 state;
 304         u8 ssid[IW_ESSID_MAX_SIZE+1];
 305         size_t ssid_len;
 306         u8 active;
 307         u8 high_prio;
 308         u8 probe_requests;
 309 };
 310
 311 struct wl1271 {
 312         struct ieee80211_hw *hw;
 313         bool mac80211_registered;
 314
 315         struct spi_device *spi;
 316
 317         void (*set_power)(bool enable);
 318         int irq;
 319
 320         spinlock_t wl_lock;
 321
 322         enum wl1271_state state;
 323         struct mutex mutex;
 324
 325         struct wl1271_partition_set part;
 326
 327         struct wl1271_chip chip;
 328
 329         int cmd_box_addr;
 330         int event_box_addr;
 331
 332         u8 *fw;
 333         size_t fw_len;
 334         u8 *nvs;
 335         size_t nvs_len;
 336
 337         u8 bssid[ETH_ALEN];
 338         u8 mac_addr[ETH_ALEN];
 339         u8 bss_type;
 340         u8 ssid[IW_ESSID_MAX_SIZE + 1];
 341         u8 ssid_len;
 342         int channel;
 343
 344         struct wl1271_acx_mem_map *target_mem_map;
 345
 346         /* Accounting for allocated / available TX blocks on HW */
 347         u32 tx_blocks_freed[NUM_TX_QUEUES];
 348         u32 tx_blocks_available;
 349         u8 tx_results_count;
 350
 351         /* Transmitted TX packets counter for chipset interface */
 352         int tx_packets_count;
 353
 354         /* Time-offset between host and chipset clocks */
 355         int time_offset;
 356
 357         /* Session counter for the chipset */
 358         int session_counter;
 359
 360         /* Frames scheduled for transmission, not handled yet */
 361         struct sk_buff_head tx_queue;
 362         bool tx_queue_stopped;
 363
 364         struct work_struct tx_work;
 365
 366         struct work_struct filter_work;
 367         struct wl1271_filter_params *filter_params;
 368
 369         /* Pending TX frames */
 370         struct sk_buff *tx_frames[ACX_TX_DESCRIPTORS];
 371
 372         /* Security sequence number counters */
 373         u8 tx_security_last_seq;
 374         u16 tx_security_seq_16;
 375         u32 tx_security_seq_32;
 376
 377         /* FW Rx counter */
 378         u32 rx_counter;
 379
 380         /* Rx memory pool address */
 381         struct wl1271_rx_mem_pool_addr rx_mem_pool_addr;
 382
 383         /* The target interrupt mask */
 384         struct work_struct irq_work;
 385
 386         /* The mbox event mask */
 387         u32 event_mask;
 388
 389         /* Mailbox pointers */
 390         u32 mbox_ptr[2];
 391
 392         /* Are we currently scanning */
 393         bool scanning;
 394         struct wl1271_scan scan;
 395
 396         /* Our association ID */
 397         u16 aid;
 398
 399         /* currently configured rate set */
 400         u32 basic_rate_set;
 401
 402         /* The current band */
 403         enum ieee80211_band band;
 404
 405         /* Default key (for WEP) */
 406         u32 default_key;
 407
 408         unsigned int rx_config;
 409         unsigned int rx_filter;
 410
 411         /* is firmware in elp mode */
 412         bool elp;
 413
 414         struct completion *elp_compl;
 415         struct delayed_work elp_work;
 416
 417         /* we can be in psm, but not in elp, we have to differentiate */
 418         bool psm;
 419
 420         /* PSM mode requested */
 421         bool psm_requested;
 422
 423         /* in dBm */
 424         int power_level;
 425
 426         struct wl1271_stats stats;
 427         struct wl1271_debugfs debugfs;
 428
 429         u32 buffer_32;
 430         u32 buffer_cmd;
 431         u32 buffer_busyword[WL1271_BUSY_WORD_CNT];
 432         struct wl1271_rx_descriptor *rx_descriptor;
 433
 434         struct wl1271_fw_status *fw_status;
 435         struct wl1271_tx_hw_res_if *tx_res_if;
 436
 437         struct ieee80211_vif *vif;
 438
 439         /* Used for a workaround to send disconnect before rejoining */
 440         bool joined;
 441
 442         /* Current chipset configuration */
 443         struct conf_drv_settings conf;
 444
 445         struct list_head list;
 446 };
 447
 448 int wl1271_plt_start(struct wl1271 *wl);
 449 int wl1271_plt_stop(struct wl1271 *wl);
 450
 451 #define JOIN_TIMEOUT 5000 /* 5000 milliseconds to join */
 452
 453 #define SESSION_COUNTER_MAX 7 /* maximum value for the session counter */
 454
 455 #define WL1271_DEFAULT_POWER_LEVEL 0
 456
 457 #define WL1271_TX_QUEUE_MAX_LENGTH 20
 458
 459 /* WL1271 needs a 200ms sleep after power on */
 460 #define WL1271_POWER_ON_SLEEP 200 /* in miliseconds */
 461
 462 static inline bool wl1271_11a_enabled(void)
 463 {
 464 #ifdef WL1271_80211A_ENABLED
 465         return true;
 466 #else
 467         return false;
 468 #endif
 469 }
 470
 471 #endif