drivers/staging/brcm80211/brcmfmac/dhd.h

   1 /*
   2  * Copyright (c) 2010 Broadcom Corporation
   3  *
   4  * Permission to use, copy, modify, and/or distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
  11  * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
  13  * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
  14  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15  */
  16
  17 /****************
  18  * Common types *
  19  */
  20
  21 #ifndef _dhd_h_
  22 #define _dhd_h_
  23
  24 #include <linux/sched.h>
  25 #include <linux/init.h>
  26 #include <linux/kernel.h>
  27 #include <linux/slab.h>
  28 #include <linux/skbuff.h>
  29 #include <linux/netdevice.h>
  30 #include <linux/etherdevice.h>
  31 #include <linux/random.h>
  32 #include <linux/spinlock.h>
  33 #include <linux/ethtool.h>
  34 #include <asm/uaccess.h>
  35 #include <asm/unaligned.h>
  36 /* The kernel threading is sdio-specific */
  37
  38 #include <wlioctl.h>
  39
  40 /* Forward decls */
  41 struct dhd_bus;
  42 struct dhd_prot;
  43 struct dhd_info;
  44
  45 /* The level of bus communication with the dongle */
  46 enum dhd_bus_state {
  47         DHD_BUS_DOWN,           /* Not ready for frame transfers */
  48         DHD_BUS_LOAD,           /* Download access only (CPU reset) */
  49         DHD_BUS_DATA            /* Ready for frame transfers */
  50 };
  51
  52 /* Common structure for module and instance linkage */
  53 typedef struct dhd_pub {
  54         /* Linkage ponters */
  55         struct dhd_bus *bus;    /* Bus module handle */
  56         struct dhd_prot *prot;  /* Protocol module handle */
  57         struct dhd_info *info;  /* Info module handle */
  58
  59         /* Internal dhd items */
  60         bool up;                /* Driver up/down (to OS) */
  61         bool txoff;             /* Transmit flow-controlled */
  62         bool dongle_reset;      /* true = DEVRESET put dongle into reset */
  63         enum dhd_bus_state busstate;
  64         uint hdrlen;            /* Total DHD header length (proto + bus) */
  65         uint maxctl;            /* Max size rxctl request from proto to bus */
  66         uint rxsz;              /* Rx buffer size bus module should use */
  67         u8 wme_dp;              /* wme discard priority */
  68
  69         /* Dongle media info */
  70         bool iswl;              /* Dongle-resident driver is wl */
  71         unsigned long drv_version;      /* Version of dongle-resident driver */
  72         u8 mac[ETH_ALEN];                       /* MAC address obtained from dongle */
  73         dngl_stats_t dstats;            /* Stats for dongle-based data */
  74
  75         /* Additional stats for the bus level */
  76         unsigned long tx_packets;       /* Data packets sent to dongle */
  77         unsigned long tx_multicast;     /* Multicast data packets sent to dongle */
  78         unsigned long tx_errors;        /* Errors in sending data to dongle */
  79         unsigned long tx_ctlpkts;       /* Control packets sent to dongle */
  80         unsigned long tx_ctlerrs;       /* Errors sending control frames to dongle */
  81         unsigned long rx_packets;       /* Packets sent up the network interface */
  82         unsigned long rx_multicast;     /* Multicast packets sent up the network
  83                                          interface */
  84         unsigned long rx_errors;        /* Errors processing rx data packets */
  85         unsigned long rx_ctlpkts;       /* Control frames processed from dongle */
  86         unsigned long rx_ctlerrs;       /* Errors in processing rx control frames */
  87         unsigned long rx_dropped;       /* Packets dropped locally (no memory) */
  88         unsigned long rx_flushed;       /* Packets flushed due to
  89                                 unscheduled sendup thread */
  90         unsigned long wd_dpc_sched;     /* Number of times dhd dpc scheduled by
  91                                          watchdog timer */
  92
  93         unsigned long rx_readahead_cnt; /* Number of packets where header read-ahead
  94                                          was used. */
  95         unsigned long tx_realloc;       /* Number of tx packets we had to realloc for
  96                                          headroom */
  97         unsigned long fc_packets;       /* Number of flow control pkts recvd */
  98
  99         /* Last error return */
 100         int bcmerror;
 101         uint tickcnt;
 102
 103         /* Last error from dongle */
 104         int dongle_error;
 105
 106         /* Suspend disable flag  flag */
 107         int suspend_disable_flag;       /* "1" to disable all extra powersaving
 108                                          during suspend */
 109         int in_suspend;         /* flag set to 1 when early suspend called */
 110 #ifdef PNO_SUPPORT
 111         int pno_enable;         /* pno status : "1" is pno enable */
 112 #endif                          /* PNO_SUPPORT */
 113         int dtim_skip;          /* dtim skip , default 0 means wake each dtim */
 114
 115         /* Pkt filter defination */
 116         char *pktfilter[100];
 117         int pktfilter_count;
 118
 119         u8 country_code[WLC_CNTRY_BUF_SZ];
 120         char eventmask[WL_EVENTING_MASK_LEN];
 121
 122 } dhd_pub_t;
 123
 124 #if defined(CONFIG_PM_SLEEP)
 125
 126 #define DHD_PM_RESUME_WAIT_INIT(a) DECLARE_WAIT_QUEUE_HEAD(a);
 127 #define _DHD_PM_RESUME_WAIT(a, b) do {\
 128                         int retry = 0; \
 129                         while (dhd_mmc_suspend && retry++ != b) { \
 130                                 wait_event_timeout(a, false, HZ/100); \
 131                         } \
 132                 }       while (0)
 133 #define DHD_PM_RESUME_WAIT(a)   _DHD_PM_RESUME_WAIT(a, 30)
 134 #define DHD_PM_RESUME_WAIT_FOREVER(a)   _DHD_PM_RESUME_WAIT(a, ~0)
 135 #define DHD_PM_RESUME_RETURN_ERROR(a)   \
 136         do { if (dhd_mmc_suspend) return a; } while (0)
 137 #define DHD_PM_RESUME_RETURN    do { if (dhd_mmc_suspend) return; } while (0)
 138
 139 #define DHD_SPINWAIT_SLEEP_INIT(a) DECLARE_WAIT_QUEUE_HEAD(a);
 140 #define SPINWAIT_SLEEP(a, exp, us) do { \
 141                 uint countdown = (us) + 9999; \
 142                 while ((exp) && (countdown >= 10000)) { \
 143                         wait_event_timeout(a, false, HZ/100); \
 144                         countdown -= 10000; \
 145                 } \
 146         } while (0)
 147
 148 #else
 149
 150 #define DHD_PM_RESUME_WAIT_INIT(a)
 151 #define DHD_PM_RESUME_WAIT(a)
 152 #define DHD_PM_RESUME_WAIT_FOREVER(a)
 153 #define DHD_PM_RESUME_RETURN_ERROR(a)
 154 #define DHD_PM_RESUME_RETURN
 155
 156 #define DHD_SPINWAIT_SLEEP_INIT(a)
 157 #define SPINWAIT_SLEEP(a, exp, us)  do { \
 158                 uint countdown = (us) + 9; \
 159                 while ((exp) && (countdown >= 10)) { \
 160                         udelay(10);  \
 161                         countdown -= 10;  \
 162                 } \
 163         } while (0)
 164
 165 #endif  /* defined(CONFIG_PM_SLEEP) */
 166 #define DHD_IF_VIF      0x01    /* Virtual IF (Hidden from user) */
 167
 168 static inline void MUTEX_LOCK_INIT(dhd_pub_t *dhdp)
 169 {
 170 }
 171
 172 static inline void MUTEX_LOCK(dhd_pub_t *dhdp)
 173 {
 174 }
 175
 176 static inline void MUTEX_UNLOCK(dhd_pub_t *dhdp)
 177 {
 178 }
 179
 180 static inline void MUTEX_LOCK_SOFTAP_SET_INIT(dhd_pub_t *dhdp)
 181 {
 182 }
 183
 184 static inline void MUTEX_LOCK_SOFTAP_SET(dhd_pub_t *dhdp)
 185 {
 186 }
 187
 188 static inline void MUTEX_UNLOCK_SOFTAP_SET(dhd_pub_t *dhdp)
 189 {
 190 }
 191
 192 static inline void MUTEX_LOCK_WL_SCAN_SET_INIT(void)
 193 {
 194 }
 195
 196 static inline void MUTEX_LOCK_WL_SCAN_SET(void)
 197 {
 198 }
 199
 200 static inline void MUTEX_UNLOCK_WL_SCAN_SET(void)
 201 {
 202 }
 203
 204 typedef struct dhd_if_event {
 205         u8 ifidx;
 206         u8 action;
 207         u8 flags;
 208         u8 bssidx;
 209 } dhd_if_event_t;
 210
 211 /*
 212  * Exported from dhd OS modules (dhd_linux/dhd_ndis)
 213  */
 214
 215 /* Indication from bus module regarding presence/insertion of dongle.
 216  * Return dhd_pub_t pointer, used as handle to OS module in later calls.
 217  * Returned structure should have bus and prot pointers filled in.
 218  * bus_hdrlen specifies required headroom for bus module header.
 219  */
 220 extern dhd_pub_t *dhd_attach(struct dhd_bus *bus,
 221                                 uint bus_hdrlen);
 222 extern int dhd_net_attach(dhd_pub_t *dhdp, int idx);
 223
 224 /* Indication from bus module regarding removal/absence of dongle */
 225 extern void dhd_detach(dhd_pub_t *dhdp);
 226
 227 /* Indication from bus module to change flow-control state */
 228 extern void dhd_txflowcontrol(dhd_pub_t *dhdp, int ifidx, bool on);
 229
 230 extern bool dhd_prec_enq(dhd_pub_t *dhdp, struct pktq *q,
 231                          struct sk_buff *pkt, int prec);
 232
 233 /* Receive frame for delivery to OS.  Callee disposes of rxp. */
 234 extern void dhd_rx_frame(dhd_pub_t *dhdp, int ifidx,
 235                          struct sk_buff *rxp, int numpkt);
 236
 237 /* Return pointer to interface name */
 238 extern char *dhd_ifname(dhd_pub_t *dhdp, int idx);
 239
 240 /* Request scheduling of the bus dpc */
 241 extern void dhd_sched_dpc(dhd_pub_t *dhdp);
 242
 243 /* Notify tx completion */
 244 extern void dhd_txcomplete(dhd_pub_t *dhdp, struct sk_buff *txp, bool success);
 245
 246 /* Query ioctl */
 247 extern int dhdcdc_query_ioctl(dhd_pub_t *dhd, int ifidx, uint cmd, void *buf,
 248                               uint len);
 249
 250 /* OS independent layer functions */
 251 extern int dhd_os_proto_block(dhd_pub_t *pub);
 252 extern int dhd_os_proto_unblock(dhd_pub_t *pub);
 253 extern int dhd_os_ioctl_resp_wait(dhd_pub_t *pub, uint *condition,
 254                                   bool *pending);
 255 extern int dhd_os_ioctl_resp_wake(dhd_pub_t *pub);
 256 extern unsigned int dhd_os_get_ioctl_resp_timeout(void);
 257 extern void dhd_os_set_ioctl_resp_timeout(unsigned int timeout_msec);
 258 extern void *dhd_os_open_image(char *filename);
 259 extern int dhd_os_get_image_block(char *buf, int len, void *image);
 260 extern void dhd_os_close_image(void *image);
 261 extern void dhd_os_wd_timer(void *bus, uint wdtick);
 262 extern void dhd_os_sdlock(dhd_pub_t *pub);
 263 extern void dhd_os_sdunlock(dhd_pub_t *pub);
 264 extern void dhd_os_sdlock_txq(dhd_pub_t *pub);
 265 extern void dhd_os_sdunlock_txq(dhd_pub_t *pub);
 266 extern void dhd_os_sdlock_rxq(dhd_pub_t *pub);
 267 extern void dhd_os_sdunlock_rxq(dhd_pub_t *pub);
 268 extern void dhd_os_sdlock_sndup_rxq(dhd_pub_t *pub);
 269 extern void dhd_customer_gpio_wlan_ctrl(int onoff);
 270 extern int dhd_custom_get_mac_address(unsigned char *buf);
 271 extern void dhd_os_sdunlock_sndup_rxq(dhd_pub_t *pub);
 272 extern void dhd_os_sdlock_eventq(dhd_pub_t *pub);
 273 extern void dhd_os_sdunlock_eventq(dhd_pub_t *pub);
 274 #ifdef DHD_DEBUG
 275 extern int write_to_file(dhd_pub_t *dhd, u8 *buf, int size);
 276 #endif                          /* DHD_DEBUG */
 277 #if defined(OOB_INTR_ONLY)
 278 extern int dhd_customer_oob_irq_map(unsigned long *irq_flags_ptr);
 279 #endif                          /* defined(OOB_INTR_ONLY) */
 280 extern void dhd_os_sdtxlock(dhd_pub_t *pub);
 281 extern void dhd_os_sdtxunlock(dhd_pub_t *pub);
 282
 283 int setScheduler(struct task_struct *p, int policy, struct sched_param *param);
 284
 285 typedef struct {
 286         u32 limit;              /* Expiration time (usec) */
 287         u32 increment;  /* Current expiration increment (usec) */
 288         u32 elapsed;            /* Current elapsed time (usec) */
 289         u32 tick;               /* O/S tick time (usec) */
 290 } dhd_timeout_t;
 291
 292 extern void dhd_timeout_start(dhd_timeout_t *tmo, uint usec);
 293 extern int dhd_timeout_expired(dhd_timeout_t *tmo);
 294
 295 extern int dhd_ifname2idx(struct dhd_info *dhd, char *name);
 296 extern u8 *dhd_bssidx2bssid(dhd_pub_t *dhd, int idx);
 297 extern int wl_host_event(struct dhd_info *dhd, int *idx, void *pktdata,
 298                          wl_event_msg_t *, void **data_ptr);
 299
 300 extern void dhd_common_init(void);
 301
 302 extern int dhd_add_if(struct dhd_info *dhd, int ifidx, void *handle,
 303                       char *name, u8 *mac_addr, u32 flags, u8 bssidx);
 304 extern void dhd_del_if(struct dhd_info *dhd, int ifidx);
 305
 306 extern void dhd_vif_add(struct dhd_info *dhd, int ifidx, char *name);
 307 extern void dhd_vif_del(struct dhd_info *dhd, int ifidx);
 308
 309 extern void dhd_event(struct dhd_info *dhd, char *evpkt, int evlen, int ifidx);
 310 extern void dhd_vif_sendup(struct dhd_info *dhd, int ifidx, unsigned char * cp,
 311                            int len);
 312
 313 /* Send packet to dongle via data channel */
 314 extern int dhd_sendpkt(dhd_pub_t *dhdp, int ifidx, struct sk_buff *pkt);
 315
 316 /* Send event to host */
 317 extern void dhd_sendup_event(dhd_pub_t *dhdp, wl_event_msg_t *event,
 318                              void *data);
 319 extern int dhd_bus_devreset(dhd_pub_t *dhdp, u8 flag);
 320 extern uint dhd_bus_status(dhd_pub_t *dhdp);
 321 extern int dhd_bus_start(dhd_pub_t *dhdp);
 322
 323 enum cust_gpio_modes {
 324         WLAN_RESET_ON,
 325         WLAN_RESET_OFF,
 326         WLAN_POWER_ON,
 327         WLAN_POWER_OFF
 328 };
 329 /*
 330  * Insmod parameters for debug/test
 331  */
 332
 333 /* Watchdog timer interval */
 334 extern uint dhd_watchdog_ms;
 335
 336 #if defined(DHD_DEBUG)
 337 /* Console output poll interval */
 338 extern uint dhd_console_ms;
 339 #endif                          /* defined(DHD_DEBUG) */
 340
 341 /* Use interrupts */
 342 extern uint dhd_intr;
 343
 344 /* Use polling */
 345 extern uint dhd_poll;
 346
 347 /* ARP offload agent mode */
 348 extern uint dhd_arp_mode;
 349
 350 /* ARP offload enable */
 351 extern uint dhd_arp_enable;
 352
 353 /* Pkt filte enable control */
 354 extern uint dhd_pkt_filter_enable;
 355
 356 /*  Pkt filter init setup */
 357 extern uint dhd_pkt_filter_init;
 358
 359 /* Pkt filter mode control */
 360 extern uint dhd_master_mode;
 361
 362 /* Roaming mode control */
 363 extern uint dhd_roam;
 364
 365 /* Roaming mode control */
 366 extern uint dhd_radio_up;
 367
 368 /* Initial idletime ticks (may be -1 for immediate idle, 0 for no idle) */
 369 extern int dhd_idletime;
 370 #define DHD_IDLETIME_TICKS 1
 371
 372 /* SDIO Drive Strength */
 373 extern uint dhd_sdiod_drive_strength;
 374
 375 /* Override to force tx queueing all the time */
 376 extern uint dhd_force_tx_queueing;
 377
 378 #ifdef SDTEST
 379 /* Echo packet generator (SDIO), pkts/s */
 380 extern uint dhd_pktgen;
 381
 382 /* Echo packet len (0 => sawtooth, max 1800) */
 383 extern uint dhd_pktgen_len;
 384 #define MAX_PKTGEN_LEN 1800
 385 #endif
 386
 387 /* optionally set by a module_param_string() */
 388 #define MOD_PARAM_PATHLEN       2048
 389 extern char fw_path[MOD_PARAM_PATHLEN];
 390 extern char nv_path[MOD_PARAM_PATHLEN];
 391
 392 /* For supporting multiple interfaces */
 393 #define DHD_MAX_IFS     16
 394 #define DHD_DEL_IF      -0xe
 395 #define DHD_BAD_IF      -0xf
 396
 397 extern void dhd_wait_for_event(dhd_pub_t *dhd, bool * lockvar);
 398 extern void dhd_wait_event_wakeup(dhd_pub_t *dhd);
 399
 400 #endif                          /* _dhd_h_ */