drivers/net/wireless/iwmc3200wifi/iwm.h

   1 /*
   2  * Intel Wireless Multicomm 3200 WiFi driver
   3  *
   4  * Copyright (C) 2009 Intel Corporation. All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  *   * Redistributions of source code must retain the above copyright
  11  *     notice, this list of conditions and the following disclaimer.
  12  *   * Redistributions in binary form must reproduce the above copyright
  13  *     notice, this list of conditions and the following disclaimer in
  14  *     the documentation and/or other materials provided with the
  15  *     distribution.
  16  *   * Neither the name of Intel Corporation nor the names of its
  17  *     contributors may be used to endorse or promote products derived
  18  *     from this software without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  21  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  22  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  23  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  24  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  25  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  26  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  30  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  *
  32  *
  33  * Intel Corporation <ilw@linux.intel.com>
  34  * Samuel Ortiz <samuel.ortiz@intel.com>
  35  * Zhu Yi <yi.zhu@intel.com>
  36  *
  37  */
  38
  39 #ifndef __IWM_H__
  40 #define __IWM_H__
  41
  42 #include <linux/netdevice.h>
  43 #include <linux/wireless.h>
  44 #include <net/cfg80211.h>
  45
  46 #include "debug.h"
  47 #include "hal.h"
  48 #include "umac.h"
  49 #include "lmac.h"
  50 #include "eeprom.h"
  51 #include "trace.h"
  52
  53 #define IWM_COPYRIGHT "Copyright(c) 2009 Intel Corporation"
  54 #define IWM_AUTHOR "<ilw@linux.intel.com>"
  55
  56 #define IWM_SRC_LMAC    UMAC_HDI_IN_SOURCE_FHRX
  57 #define IWM_SRC_UDMA    UMAC_HDI_IN_SOURCE_UDMA
  58 #define IWM_SRC_UMAC    UMAC_HDI_IN_SOURCE_FW
  59 #define IWM_SRC_NUM     3
  60
  61 #define IWM_POWER_INDEX_MIN     0
  62 #define IWM_POWER_INDEX_MAX     5
  63 #define IWM_POWER_INDEX_DEFAULT 3
  64
  65 struct iwm_conf {
  66         u32 sdio_ior_timeout;
  67         unsigned long calib_map;
  68         unsigned long expected_calib_map;
  69         u8 ct_kill_entry;
  70         u8 ct_kill_exit;
  71         bool reset_on_fatal_err;
  72         bool auto_connect;
  73         bool wimax_not_present;
  74         bool enable_qos;
  75         u32 mode;
  76
  77         u32 power_index;
  78         u32 frag_threshold;
  79         u32 rts_threshold;
  80         bool cts_to_self;
  81
  82         u32 assoc_timeout;
  83         u32 roam_timeout;
  84         u32 wireless_mode;
  85
  86         u8 ibss_band;
  87         u8 ibss_channel;
  88
  89         u8 mac_addr[ETH_ALEN];
  90 };
  91
  92 enum {
  93         COEX_MODE_SA = 1,
  94         COEX_MODE_XOR,
  95         COEX_MODE_CM,
  96         COEX_MODE_MAX,
  97 };
  98
  99 struct iwm_if_ops;
 100 struct iwm_wifi_cmd;
 101
 102 struct pool_entry {
 103         int id;         /* group id */
 104         int sid;        /* super group id */
 105         int min_pages;  /* min capacity in pages */
 106         int max_pages;  /* max capacity in pages */
 107         int alloc_pages;        /* allocated # of pages. incresed by driver */
 108         int total_freed_pages;  /* total freed # of pages. incresed by UMAC */
 109 };
 110
 111 struct spool_entry {
 112         int id;
 113         int max_pages;
 114         int alloc_pages;
 115 };
 116
 117 struct iwm_tx_credit {
 118         spinlock_t lock;
 119         int pool_nr;
 120         unsigned long full_pools_map; /* bitmap for # of filled tx pools */
 121         struct pool_entry pools[IWM_MACS_OUT_GROUPS];
 122         struct spool_entry spools[IWM_MACS_OUT_SGROUPS];
 123 };
 124
 125 struct iwm_notif {
 126         struct list_head pending;
 127         u32 cmd_id;
 128         void *cmd;
 129         u8 src;
 130         void *buf;
 131         unsigned long buf_size;
 132 };
 133
 134 struct iwm_tid_info {
 135         __le16 last_seq_num;
 136         bool stopped;
 137         struct mutex mutex;
 138 };
 139
 140 struct iwm_sta_info {
 141         u8 addr[ETH_ALEN];
 142         bool valid;
 143         bool qos;
 144         u8 color;
 145         struct iwm_tid_info tid_info[IWM_UMAC_TID_NR];
 146 };
 147
 148 struct iwm_tx_info {
 149         u8 sta;
 150         u8 color;
 151         u8 tid;
 152 };
 153
 154 struct iwm_rx_info {
 155         unsigned long rx_size;
 156         unsigned long rx_buf_size;
 157 };
 158
 159 #define IWM_NUM_KEYS 4
 160
 161 struct iwm_umac_key_hdr {
 162         u8 mac[ETH_ALEN];
 163         u8 key_idx;
 164         u8 multicast; /* BCast encrypt & BCast decrypt of frames FROM mac */
 165 } __packed;
 166
 167 struct iwm_key {
 168         struct iwm_umac_key_hdr hdr;
 169         u32 cipher;
 170         u8 key[WLAN_MAX_KEY_LEN];
 171         u8 seq[IW_ENCODE_SEQ_MAX_SIZE];
 172         int key_len;
 173         int seq_len;
 174 };
 175
 176 #define IWM_RX_ID_HASH  0xff
 177 #define IWM_RX_ID_GET_HASH(id) ((id) % IWM_RX_ID_HASH)
 178
 179 #define IWM_STA_TABLE_NUM       16
 180 #define IWM_TX_LIST_SIZE        64
 181 #define IWM_RX_LIST_SIZE        256
 182
 183 #define IWM_SCAN_ID_MAX 0xff
 184
 185 #define IWM_STATUS_READY                0
 186 #define IWM_STATUS_SCANNING             1
 187 #define IWM_STATUS_SCAN_ABORTING        2
 188 #define IWM_STATUS_SME_CONNECTING       3
 189 #define IWM_STATUS_ASSOCIATED           4
 190 #define IWM_STATUS_RESETTING            5
 191
 192 struct iwm_tx_queue {
 193         int id;
 194         struct sk_buff_head queue;
 195         struct sk_buff_head stopped_queue;
 196         spinlock_t lock;
 197         struct workqueue_struct *wq;
 198         struct work_struct worker;
 199         u8 concat_buf[IWM_HAL_CONCATENATE_BUF_SIZE];
 200         int concat_count;
 201         u8 *concat_ptr;
 202 };
 203
 204 /* Queues 0 ~ 3 for AC data, 5 for iPAN */
 205 #define IWM_TX_QUEUES           5
 206 #define IWM_TX_DATA_QUEUES      4
 207 #define IWM_TX_CMD_QUEUE        4
 208
 209 struct iwm_bss_info {
 210         struct list_head node;
 211         struct cfg80211_bss *cfg_bss;
 212         struct iwm_umac_notif_bss_info *bss;
 213 };
 214
 215 typedef int (*iwm_handler)(struct iwm_priv *priv, u8 *buf,
 216                            unsigned long buf_size, struct iwm_wifi_cmd *cmd);
 217
 218 #define IWM_WATCHDOG_PERIOD     (6 * HZ)
 219
 220 struct iwm_priv {
 221         struct wireless_dev *wdev;
 222         struct iwm_if_ops *bus_ops;
 223
 224         struct iwm_conf conf;
 225
 226         unsigned long status;
 227
 228         struct list_head pending_notif;
 229         wait_queue_head_t notif_queue;
 230
 231         wait_queue_head_t nonwifi_queue;
 232
 233         unsigned long calib_done_map;
 234         struct {
 235                 u8 *buf;
 236                 u32 size;
 237         } calib_res[CALIBRATION_CMD_NUM];
 238
 239         struct iwm_umac_profile *umac_profile;
 240         bool umac_profile_active;
 241
 242         u8 bssid[ETH_ALEN];
 243         u8 channel;
 244         u16 rate;
 245         u32 txpower;
 246
 247         struct iwm_sta_info sta_table[IWM_STA_TABLE_NUM];
 248         struct list_head bss_list;
 249
 250         void (*nonwifi_rx_handlers[UMAC_HDI_IN_OPCODE_NONWIFI_MAX])
 251         (struct iwm_priv *priv, u8 *buf, unsigned long buf_size);
 252
 253         const iwm_handler *umac_handlers;
 254         const iwm_handler *lmac_handlers;
 255         DECLARE_BITMAP(lmac_handler_map, LMAC_COMMAND_ID_NUM);
 256         DECLARE_BITMAP(umac_handler_map, LMAC_COMMAND_ID_NUM);
 257         DECLARE_BITMAP(udma_handler_map, LMAC_COMMAND_ID_NUM);
 258
 259         struct list_head wifi_pending_cmd;
 260         struct list_head nonwifi_pending_cmd;
 261         u16 wifi_seq_num;
 262         u8 nonwifi_seq_num;
 263         spinlock_t cmd_lock;
 264
 265         u32 core_enabled;
 266
 267         u8 scan_id;
 268         struct cfg80211_scan_request *scan_request;
 269
 270         struct sk_buff_head rx_list;
 271         struct list_head rx_tickets;
 272         spinlock_t ticket_lock;
 273         struct list_head rx_packets[IWM_RX_ID_HASH];
 274         spinlock_t packet_lock[IWM_RX_ID_HASH];
 275         struct workqueue_struct *rx_wq;
 276         struct work_struct rx_worker;
 277
 278         struct iwm_tx_credit tx_credit;
 279         struct iwm_tx_queue txq[IWM_TX_QUEUES];
 280
 281         struct iwm_key keys[IWM_NUM_KEYS];
 282         s8 default_key;
 283
 284         DECLARE_BITMAP(wifi_ntfy, WIFI_IF_NTFY_MAX);
 285         wait_queue_head_t wifi_ntfy_queue;
 286
 287         wait_queue_head_t mlme_queue;
 288
 289         struct iw_statistics wstats;
 290         struct delayed_work stats_request;
 291         struct delayed_work disconnect;
 292         struct delayed_work ct_kill_delay;
 293
 294         struct iwm_debugfs dbg;
 295
 296         u8 *eeprom;
 297         struct timer_list watchdog;
 298         struct work_struct reset_worker;
 299         struct work_struct auth_retry_worker;
 300         struct mutex mutex;
 301
 302         u8 *req_ie;
 303         int req_ie_len;
 304         u8 *resp_ie;
 305         int resp_ie_len;
 306
 307         struct iwm_fw_error_hdr *last_fw_err;
 308         char umac_version[8];
 309         char lmac_version[8];
 310
 311         char private[0] __attribute__((__aligned__(NETDEV_ALIGN)));
 312 };
 313
 314 static inline void *iwm_private(struct iwm_priv *iwm)
 315 {
 316         BUG_ON(!iwm);
 317         return &iwm->private;
 318 }
 319
 320 #define hw_to_iwm(h) (h->iwm)
 321 #define iwm_to_dev(i) (wiphy_dev(i->wdev->wiphy))
 322 #define iwm_to_wiphy(i) (i->wdev->wiphy)
 323 #define wiphy_to_iwm(w) (struct iwm_priv *)(wiphy_priv(w))
 324 #define iwm_to_wdev(i) (i->wdev)
 325 #define wdev_to_iwm(w) (struct iwm_priv *)(wdev_priv(w))
 326 #define iwm_to_ndev(i) (i->wdev->netdev)
 327 #define ndev_to_iwm(n) (wdev_to_iwm(n->ieee80211_ptr))
 328 #define skb_to_rx_info(s) ((struct iwm_rx_info *)(s->cb))
 329 #define skb_to_tx_info(s) ((struct iwm_tx_info *)s->cb)
 330
 331 void *iwm_if_alloc(int sizeof_bus, struct device *dev,
 332                    struct iwm_if_ops *if_ops);
 333 void iwm_if_free(struct iwm_priv *iwm);
 334 int iwm_if_add(struct iwm_priv *iwm);
 335 void iwm_if_remove(struct iwm_priv *iwm);
 336 int iwm_mode_to_nl80211_iftype(int mode);
 337 int iwm_priv_init(struct iwm_priv *iwm);
 338 void iwm_priv_deinit(struct iwm_priv *iwm);
 339 void iwm_reset(struct iwm_priv *iwm);
 340 void iwm_resetting(struct iwm_priv *iwm);
 341 void iwm_tx_credit_init_pools(struct iwm_priv *iwm,
 342                               struct iwm_umac_notif_alive *alive);
 343 int iwm_tx_credit_alloc(struct iwm_priv *iwm, int id, int nb);
 344 int iwm_notif_send(struct iwm_priv *iwm, struct iwm_wifi_cmd *cmd,
 345                    u8 cmd_id, u8 source, u8 *buf, unsigned long buf_size);
 346 int iwm_notif_handle(struct iwm_priv *iwm, u32 cmd, u8 source, long timeout);
 347 void iwm_init_default_profile(struct iwm_priv *iwm,
 348                               struct iwm_umac_profile *profile);
 349 void iwm_link_on(struct iwm_priv *iwm);
 350 void iwm_link_off(struct iwm_priv *iwm);
 351 int iwm_up(struct iwm_priv *iwm);
 352 int iwm_down(struct iwm_priv *iwm);
 353
 354 /* TX API */
 355 int iwm_tid_to_queue(u16 tid);
 356 void iwm_tx_credit_inc(struct iwm_priv *iwm, int id, int total_freed_pages);
 357 void iwm_tx_worker(struct work_struct *work);
 358 int iwm_xmit_frame(struct sk_buff *skb, struct net_device *netdev);
 359
 360 /* RX API */
 361 void iwm_rx_setup_handlers(struct iwm_priv *iwm);
 362 int iwm_rx_handle(struct iwm_priv *iwm, u8 *buf, unsigned long buf_size);
 363 int iwm_rx_handle_resp(struct iwm_priv *iwm, u8 *buf, unsigned long buf_size,
 364                        struct iwm_wifi_cmd *cmd);
 365 void iwm_rx_free(struct iwm_priv *iwm);
 366
 367 #endif