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
  52 #define IWM_COPYRIGHT "Copyright(c) 2009 Intel Corporation"
  53 #define IWM_AUTHOR "<ilw@linux.intel.com>"
  54
  55 #define IWM_SRC_LMAC    UMAC_HDI_IN_SOURCE_FHRX
  56 #define IWM_SRC_UDMA    UMAC_HDI_IN_SOURCE_UDMA
  57 #define IWM_SRC_UMAC    UMAC_HDI_IN_SOURCE_FW
  58 #define IWM_SRC_NUM     3
  59
  60 #define IWM_POWER_INDEX_MIN     0
  61 #define IWM_POWER_INDEX_MAX     5
  62 #define IWM_POWER_INDEX_DEFAULT 3
  63
  64 struct iwm_conf {
  65         u32 sdio_ior_timeout;
  66         unsigned long calib_map;
  67         unsigned long expected_calib_map;
  68         u8 ct_kill_entry;
  69         u8 ct_kill_exit;
  70         bool reset_on_fatal_err;
  71         bool auto_connect;
  72         bool wimax_not_present;
  73         bool enable_qos;
  74         u32 mode;
  75
  76         u32 power_index;
  77         u32 frag_threshold;
  78         u32 rts_threshold;
  79         bool cts_to_self;
  80
  81         u32 assoc_timeout;
  82         u32 roam_timeout;
  83         u32 wireless_mode;
  84
  85         u8 ibss_band;
  86         u8 ibss_channel;
  87
  88         u8 mac_addr[ETH_ALEN];
  89 };
  90
  91 enum {
  92         COEX_MODE_SA = 1,
  93         COEX_MODE_XOR,
  94         COEX_MODE_CM,
  95         COEX_MODE_MAX,
  96 };
  97
  98 struct iwm_if_ops;
  99 struct iwm_wifi_cmd;
 100
 101 struct pool_entry {
 102         int id;         /* group id */
 103         int sid;        /* super group id */
 104         int min_pages;  /* min capacity in pages */
 105         int max_pages;  /* max capacity in pages */
 106         int alloc_pages;        /* allocated # of pages. incresed by driver */
 107         int total_freed_pages;  /* total freed # of pages. incresed by UMAC */
 108 };
 109
 110 struct spool_entry {
 111         int id;
 112         int max_pages;
 113         int alloc_pages;
 114 };
 115
 116 struct iwm_tx_credit {
 117         spinlock_t lock;
 118         int pool_nr;
 119         unsigned long full_pools_map; /* bitmap for # of filled tx pools */
 120         struct pool_entry pools[IWM_MACS_OUT_GROUPS];
 121         struct spool_entry spools[IWM_MACS_OUT_SGROUPS];
 122 };
 123
 124 struct iwm_notif {
 125         struct list_head pending;
 126         u32 cmd_id;
 127         void *cmd;
 128         u8 src;
 129         void *buf;
 130         unsigned long buf_size;
 131 };
 132
 133 struct iwm_tid_info {
 134         __le16 last_seq_num;
 135         bool stopped;
 136         struct mutex mutex;
 137 };
 138
 139 struct iwm_sta_info {
 140         u8 addr[ETH_ALEN];
 141         bool valid;
 142         bool qos;
 143         u8 color;
 144         struct iwm_tid_info tid_info[IWM_UMAC_TID_NR];
 145 };
 146
 147 struct iwm_tx_info {
 148         u8 sta;
 149         u8 color;
 150         u8 tid;
 151 };
 152
 153 struct iwm_rx_info {
 154         unsigned long rx_size;
 155         unsigned long rx_buf_size;
 156 };
 157
 158 #define IWM_NUM_KEYS 4
 159
 160 struct iwm_umac_key_hdr {
 161         u8 mac[ETH_ALEN];
 162         u8 key_idx;
 163         u8 multicast; /* BCast encrypt & BCast decrypt of frames FROM mac */
 164 } __attribute__ ((packed));
 165
 166 struct iwm_key {
 167         struct iwm_umac_key_hdr hdr;
 168         u32 cipher;
 169         u8 key[WLAN_MAX_KEY_LEN];
 170         u8 seq[IW_ENCODE_SEQ_MAX_SIZE];
 171         int key_len;
 172         int seq_len;
 173 };
 174
 175 #define IWM_RX_ID_HASH  0xff
 176 #define IWM_RX_ID_GET_HASH(id) ((id) % IWM_RX_ID_HASH)
 177
 178 #define IWM_STA_TABLE_NUM       16
 179 #define IWM_TX_LIST_SIZE        64
 180 #define IWM_RX_LIST_SIZE        256
 181
 182 #define IWM_SCAN_ID_MAX 0xff
 183
 184 #define IWM_STATUS_READY                0
 185 #define IWM_STATUS_SCANNING             1
 186 #define IWM_STATUS_SCAN_ABORTING        2
 187 #define IWM_STATUS_SME_CONNECTING       3
 188 #define IWM_STATUS_ASSOCIATED           4
 189 #define IWM_STATUS_RESETTING            5
 190
 191 struct iwm_tx_queue {
 192         int id;
 193         struct sk_buff_head queue;
 194         struct sk_buff_head stopped_queue;
 195         spinlock_t lock;
 196         struct workqueue_struct *wq;
 197         struct work_struct worker;
 198         u8 concat_buf[IWM_HAL_CONCATENATE_BUF_SIZE];
 199         int concat_count;
 200         u8 *concat_ptr;
 201 };
 202
 203 /* Queues 0 ~ 3 for AC data, 5 for iPAN */
 204 #define IWM_TX_QUEUES           5
 205 #define IWM_TX_DATA_QUEUES      4
 206 #define IWM_TX_CMD_QUEUE        4
 207
 208 struct iwm_bss_info {
 209         struct list_head node;
 210         struct cfg80211_bss *cfg_bss;
 211         struct iwm_umac_notif_bss_info *bss;
 212 };
 213
 214 typedef int (*iwm_handler)(struct iwm_priv *priv, u8 *buf,
 215                            unsigned long buf_size, struct iwm_wifi_cmd *cmd);
 216
 217 #define IWM_WATCHDOG_PERIOD     (6 * HZ)
 218
 219 struct iwm_priv {
 220         struct wireless_dev *wdev;
 221         struct iwm_if_ops *bus_ops;
 222
 223         struct iwm_conf conf;
 224
 225         unsigned long status;
 226
 227         struct list_head pending_notif;
 228         wait_queue_head_t notif_queue;
 229
 230         wait_queue_head_t nonwifi_queue;
 231
 232         unsigned long calib_done_map;
 233         struct {
 234                 u8 *buf;
 235                 u32 size;
 236         } calib_res[CALIBRATION_CMD_NUM];
 237
 238         struct iwm_umac_profile *umac_profile;
 239         bool umac_profile_active;
 240
 241         u8 bssid[ETH_ALEN];
 242         u8 channel;
 243         u16 rate;
 244         u32 txpower;
 245
 246         struct iwm_sta_info sta_table[IWM_STA_TABLE_NUM];
 247         struct list_head bss_list;
 248
 249         void (*nonwifi_rx_handlers[UMAC_HDI_IN_OPCODE_NONWIFI_MAX])
 250         (struct iwm_priv *priv, u8 *buf, unsigned long buf_size);
 251
 252         const iwm_handler *umac_handlers;
 253         const iwm_handler *lmac_handlers;
 254         DECLARE_BITMAP(lmac_handler_map, LMAC_COMMAND_ID_NUM);
 255         DECLARE_BITMAP(umac_handler_map, LMAC_COMMAND_ID_NUM);
 256         DECLARE_BITMAP(udma_handler_map, LMAC_COMMAND_ID_NUM);
 257
 258         struct list_head wifi_pending_cmd;
 259         struct list_head nonwifi_pending_cmd;
 260         u16 wifi_seq_num;
 261         u8 nonwifi_seq_num;
 262         spinlock_t cmd_lock;
 263
 264         u32 core_enabled;
 265
 266         u8 scan_id;
 267         struct cfg80211_scan_request *scan_request;
 268
 269         struct sk_buff_head rx_list;
 270         struct list_head rx_tickets;
 271         struct list_head rx_packets[IWM_RX_ID_HASH];
 272         struct workqueue_struct *rx_wq;
 273         struct work_struct rx_worker;
 274
 275         struct iwm_tx_credit tx_credit;
 276         struct iwm_tx_queue txq[IWM_TX_QUEUES];
 277
 278         struct iwm_key keys[IWM_NUM_KEYS];
 279         s8 default_key;
 280
 281         DECLARE_BITMAP(wifi_ntfy, WIFI_IF_NTFY_MAX);
 282         wait_queue_head_t wifi_ntfy_queue;
 283
 284         wait_queue_head_t mlme_queue;
 285
 286         struct iw_statistics wstats;
 287         struct delayed_work stats_request;
 288         struct delayed_work disconnect;
 289         struct delayed_work ct_kill_delay;
 290
 291         struct iwm_debugfs dbg;
 292
 293         u8 *eeprom;
 294         struct timer_list watchdog;
 295         struct work_struct reset_worker;
 296         struct work_struct auth_retry_worker;
 297         struct mutex mutex;
 298
 299         u8 *req_ie;
 300         int req_ie_len;
 301         u8 *resp_ie;
 302         int resp_ie_len;
 303
 304         struct iwm_fw_error_hdr *last_fw_err;
 305         char umac_version[8];
 306         char lmac_version[8];
 307
 308         char private[0] __attribute__((__aligned__(NETDEV_ALIGN)));
 309 };
 310
 311 static inline void *iwm_private(struct iwm_priv *iwm)
 312 {
 313         BUG_ON(!iwm);
 314         return &iwm->private;
 315 }
 316
 317 #define hw_to_iwm(h) (h->iwm)
 318 #define iwm_to_dev(i) (wiphy_dev(i->wdev->wiphy))
 319 #define iwm_to_wiphy(i) (i->wdev->wiphy)
 320 #define wiphy_to_iwm(w) (struct iwm_priv *)(wiphy_priv(w))
 321 #define iwm_to_wdev(i) (i->wdev)
 322 #define wdev_to_iwm(w) (struct iwm_priv *)(wdev_priv(w))
 323 #define iwm_to_ndev(i) (i->wdev->netdev)
 324 #define ndev_to_iwm(n) (wdev_to_iwm(n->ieee80211_ptr))
 325 #define skb_to_rx_info(s) ((struct iwm_rx_info *)(s->cb))
 326 #define skb_to_tx_info(s) ((struct iwm_tx_info *)s->cb)
 327
 328 void *iwm_if_alloc(int sizeof_bus, struct device *dev,
 329                    struct iwm_if_ops *if_ops);
 330 void iwm_if_free(struct iwm_priv *iwm);
 331 int iwm_if_add(struct iwm_priv *iwm);
 332 void iwm_if_remove(struct iwm_priv *iwm);
 333 int iwm_mode_to_nl80211_iftype(int mode);
 334 int iwm_priv_init(struct iwm_priv *iwm);
 335 void iwm_priv_deinit(struct iwm_priv *iwm);
 336 void iwm_reset(struct iwm_priv *iwm);
 337 void iwm_resetting(struct iwm_priv *iwm);
 338 void iwm_tx_credit_init_pools(struct iwm_priv *iwm,
 339                               struct iwm_umac_notif_alive *alive);
 340 int iwm_tx_credit_alloc(struct iwm_priv *iwm, int id, int nb);
 341 int iwm_notif_send(struct iwm_priv *iwm, struct iwm_wifi_cmd *cmd,
 342                    u8 cmd_id, u8 source, u8 *buf, unsigned long buf_size);
 343 int iwm_notif_handle(struct iwm_priv *iwm, u32 cmd, u8 source, long timeout);
 344 void iwm_init_default_profile(struct iwm_priv *iwm,
 345                               struct iwm_umac_profile *profile);
 346 void iwm_link_on(struct iwm_priv *iwm);
 347 void iwm_link_off(struct iwm_priv *iwm);
 348 int iwm_up(struct iwm_priv *iwm);
 349 int iwm_down(struct iwm_priv *iwm);
 350
 351 /* TX API */
 352 u16 iwm_tid_to_queue(u16 tid);
 353 void iwm_tx_credit_inc(struct iwm_priv *iwm, int id, int total_freed_pages);
 354 void iwm_tx_worker(struct work_struct *work);
 355 int iwm_xmit_frame(struct sk_buff *skb, struct net_device *netdev);
 356
 357 /* RX API */
 358 void iwm_rx_setup_handlers(struct iwm_priv *iwm);
 359 int iwm_rx_handle(struct iwm_priv *iwm, u8 *buf, unsigned long buf_size);
 360 int iwm_rx_handle_resp(struct iwm_priv *iwm, u8 *buf, unsigned long buf_size,
 361                        struct iwm_wifi_cmd *cmd);
 362 void iwm_rx_free(struct iwm_priv *iwm);
 363
 364 #endif