2 * Copyright (c) 2010 Broadcom Corporation
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.
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.
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 */
45 /* The level of bus communication with the dongle */
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 */
52 enum dhd_prealloc_index {
53 DHD_PREALLOC_PROT = 0,
59 /* Common structure for module and instance linkage */
60 typedef struct dhd_pub {
62 struct osl_info *osh; /* OSL handle */
63 struct dhd_bus *bus; /* Bus module handle */
64 struct dhd_prot *prot; /* Protocol module handle */
65 struct dhd_info *info; /* Info module handle */
67 /* Internal dhd items */
68 bool up; /* Driver up/down (to OS) */
69 bool txoff; /* Transmit flow-controlled */
70 bool dongle_reset; /* true = DEVRESET put dongle into reset */
71 enum dhd_bus_state busstate;
72 uint hdrlen; /* Total DHD header length (proto + bus) */
73 uint maxctl; /* Max size rxctl request from proto to bus */
74 uint rxsz; /* Rx buffer size bus module should use */
75 u8 wme_dp; /* wme discard priority */
77 /* Dongle media info */
78 bool iswl; /* Dongle-resident driver is wl */
79 unsigned long drv_version; /* Version of dongle-resident driver */
80 u8 mac[ETH_ALEN]; /* MAC address obtained from dongle */
81 dngl_stats_t dstats; /* Stats for dongle-based data */
83 /* Additional stats for the bus level */
84 unsigned long tx_packets; /* Data packets sent to dongle */
85 unsigned long tx_multicast; /* Multicast data packets sent to dongle */
86 unsigned long tx_errors; /* Errors in sending data to dongle */
87 unsigned long tx_ctlpkts; /* Control packets sent to dongle */
88 unsigned long tx_ctlerrs; /* Errors sending control frames to dongle */
89 unsigned long rx_packets; /* Packets sent up the network interface */
90 unsigned long rx_multicast; /* Multicast packets sent up the network
92 unsigned long rx_errors; /* Errors processing rx data packets */
93 unsigned long rx_ctlpkts; /* Control frames processed from dongle */
94 unsigned long rx_ctlerrs; /* Errors in processing rx control frames */
95 unsigned long rx_dropped; /* Packets dropped locally (no memory) */
96 unsigned long rx_flushed; /* Packets flushed due to
97 unscheduled sendup thread */
98 unsigned long wd_dpc_sched; /* Number of times dhd dpc scheduled by
101 unsigned long rx_readahead_cnt; /* Number of packets where header read-ahead
103 unsigned long tx_realloc; /* Number of tx packets we had to realloc for
105 unsigned long fc_packets; /* Number of flow control pkts recvd */
107 /* Last error return */
111 /* Last error from dongle */
114 /* Suspend disable flag flag */
115 int suspend_disable_flag; /* "1" to disable all extra powersaving
117 int in_suspend; /* flag set to 1 when early suspend called */
119 int pno_enable; /* pno status : "1" is pno enable */
120 #endif /* PNO_SUPPORT */
121 int dtim_skip; /* dtim skip , default 0 means wake each dtim */
123 /* Pkt filter defination */
124 char *pktfilter[100];
127 u8 country_code[WLC_CNTRY_BUF_SZ];
128 char eventmask[WL_EVENTING_MASK_LEN];
132 #if defined(CONFIG_PM_SLEEP)
134 #define DHD_PM_RESUME_WAIT_INIT(a) DECLARE_WAIT_QUEUE_HEAD(a);
135 #define _DHD_PM_RESUME_WAIT(a, b) do {\
137 while (dhd_mmc_suspend && retry++ != b) { \
138 wait_event_timeout(a, false, HZ/100); \
141 #define DHD_PM_RESUME_WAIT(a) _DHD_PM_RESUME_WAIT(a, 30)
142 #define DHD_PM_RESUME_WAIT_FOREVER(a) _DHD_PM_RESUME_WAIT(a, ~0)
143 #define DHD_PM_RESUME_RETURN_ERROR(a) \
144 do { if (dhd_mmc_suspend) return a; } while (0)
145 #define DHD_PM_RESUME_RETURN do { if (dhd_mmc_suspend) return; } while (0)
147 #define DHD_SPINWAIT_SLEEP_INIT(a) DECLARE_WAIT_QUEUE_HEAD(a);
148 #define SPINWAIT_SLEEP(a, exp, us) do { \
149 uint countdown = (us) + 9999; \
150 while ((exp) && (countdown >= 10000)) { \
151 wait_event_timeout(a, false, HZ/100); \
152 countdown -= 10000; \
158 #define DHD_PM_RESUME_WAIT_INIT(a)
159 #define DHD_PM_RESUME_WAIT(a)
160 #define DHD_PM_RESUME_WAIT_FOREVER(a)
161 #define DHD_PM_RESUME_RETURN_ERROR(a)
162 #define DHD_PM_RESUME_RETURN
164 #define DHD_SPINWAIT_SLEEP_INIT(a)
165 #define SPINWAIT_SLEEP(a, exp, us) do { \
166 uint countdown = (us) + 9; \
167 while ((exp) && (countdown >= 10)) { \
173 #endif /* defined(CONFIG_PM_SLEEP) */
174 #define DHD_IF_VIF 0x01 /* Virtual IF (Hidden from user) */
176 static inline void MUTEX_LOCK_INIT(dhd_pub_t *dhdp)
180 static inline void MUTEX_LOCK(dhd_pub_t *dhdp)
184 static inline void MUTEX_UNLOCK(dhd_pub_t *dhdp)
188 static inline void MUTEX_LOCK_SOFTAP_SET_INIT(dhd_pub_t *dhdp)
192 static inline void MUTEX_LOCK_SOFTAP_SET(dhd_pub_t *dhdp)
196 static inline void MUTEX_UNLOCK_SOFTAP_SET(dhd_pub_t *dhdp)
200 static inline void MUTEX_LOCK_WL_SCAN_SET_INIT(void)
204 static inline void MUTEX_LOCK_WL_SCAN_SET(void)
208 static inline void MUTEX_UNLOCK_WL_SCAN_SET(void)
212 typedef struct dhd_if_event {
220 * Exported from dhd OS modules (dhd_linux/dhd_ndis)
223 /* To allow osl_attach/detach calls from os-independent modules */
224 struct osl_info *dhd_osl_attach(void *pdev, uint bustype);
225 void dhd_osl_detach(struct osl_info *osh);
227 /* Indication from bus module regarding presence/insertion of dongle.
228 * Return dhd_pub_t pointer, used as handle to OS module in later calls.
229 * Returned structure should have bus and prot pointers filled in.
230 * bus_hdrlen specifies required headroom for bus module header.
232 extern dhd_pub_t *dhd_attach(struct osl_info *osh, struct dhd_bus *bus,
234 extern int dhd_net_attach(dhd_pub_t *dhdp, int idx);
236 /* Indication from bus module regarding removal/absence of dongle */
237 extern void dhd_detach(dhd_pub_t *dhdp);
239 /* Indication from bus module to change flow-control state */
240 extern void dhd_txflowcontrol(dhd_pub_t *dhdp, int ifidx, bool on);
242 extern bool dhd_prec_enq(dhd_pub_t *dhdp, struct pktq *q,
243 struct sk_buff *pkt, int prec);
245 /* Receive frame for delivery to OS. Callee disposes of rxp. */
246 extern void dhd_rx_frame(dhd_pub_t *dhdp, int ifidx,
247 struct sk_buff *rxp, int numpkt);
249 /* Return pointer to interface name */
250 extern char *dhd_ifname(dhd_pub_t *dhdp, int idx);
252 /* Request scheduling of the bus dpc */
253 extern void dhd_sched_dpc(dhd_pub_t *dhdp);
255 /* Notify tx completion */
256 extern void dhd_txcomplete(dhd_pub_t *dhdp, struct sk_buff *txp, bool success);
259 extern int dhdcdc_query_ioctl(dhd_pub_t *dhd, int ifidx, uint cmd, void *buf,
262 /* OS independent layer functions */
263 extern int dhd_os_proto_block(dhd_pub_t *pub);
264 extern int dhd_os_proto_unblock(dhd_pub_t *pub);
265 extern int dhd_os_ioctl_resp_wait(dhd_pub_t *pub, uint *condition,
267 extern int dhd_os_ioctl_resp_wake(dhd_pub_t *pub);
268 extern unsigned int dhd_os_get_ioctl_resp_timeout(void);
269 extern void dhd_os_set_ioctl_resp_timeout(unsigned int timeout_msec);
270 extern void *dhd_os_open_image(char *filename);
271 extern int dhd_os_get_image_block(char *buf, int len, void *image);
272 extern void dhd_os_close_image(void *image);
273 extern void dhd_os_wd_timer(void *bus, uint wdtick);
274 extern void dhd_os_sdlock(dhd_pub_t *pub);
275 extern void dhd_os_sdunlock(dhd_pub_t *pub);
276 extern void dhd_os_sdlock_txq(dhd_pub_t *pub);
277 extern void dhd_os_sdunlock_txq(dhd_pub_t *pub);
278 extern void dhd_os_sdlock_rxq(dhd_pub_t *pub);
279 extern void dhd_os_sdunlock_rxq(dhd_pub_t *pub);
280 extern void dhd_os_sdlock_sndup_rxq(dhd_pub_t *pub);
281 extern void dhd_customer_gpio_wlan_ctrl(int onoff);
282 extern int dhd_custom_get_mac_address(unsigned char *buf);
283 extern void dhd_os_sdunlock_sndup_rxq(dhd_pub_t *pub);
284 extern void dhd_os_sdlock_eventq(dhd_pub_t *pub);
285 extern void dhd_os_sdunlock_eventq(dhd_pub_t *pub);
287 extern int write_to_file(dhd_pub_t *dhd, u8 *buf, int size);
288 #endif /* DHD_DEBUG */
289 #if defined(OOB_INTR_ONLY)
290 extern int dhd_customer_oob_irq_map(unsigned long *irq_flags_ptr);
291 #endif /* defined(OOB_INTR_ONLY) */
292 extern void dhd_os_sdtxlock(dhd_pub_t *pub);
293 extern void dhd_os_sdtxunlock(dhd_pub_t *pub);
295 int setScheduler(struct task_struct *p, int policy, struct sched_param *param);
298 u32 limit; /* Expiration time (usec) */
299 u32 increment; /* Current expiration increment (usec) */
300 u32 elapsed; /* Current elapsed time (usec) */
301 u32 tick; /* O/S tick time (usec) */
304 extern void dhd_timeout_start(dhd_timeout_t *tmo, uint usec);
305 extern int dhd_timeout_expired(dhd_timeout_t *tmo);
307 extern int dhd_ifname2idx(struct dhd_info *dhd, char *name);
308 extern u8 *dhd_bssidx2bssid(dhd_pub_t *dhd, int idx);
309 extern int wl_host_event(struct dhd_info *dhd, int *idx, void *pktdata,
310 wl_event_msg_t *, void **data_ptr);
312 extern void dhd_common_init(void);
314 extern int dhd_add_if(struct dhd_info *dhd, int ifidx, void *handle,
315 char *name, u8 *mac_addr, u32 flags, u8 bssidx);
316 extern void dhd_del_if(struct dhd_info *dhd, int ifidx);
318 extern void dhd_vif_add(struct dhd_info *dhd, int ifidx, char *name);
319 extern void dhd_vif_del(struct dhd_info *dhd, int ifidx);
321 extern void dhd_event(struct dhd_info *dhd, char *evpkt, int evlen, int ifidx);
322 extern void dhd_vif_sendup(struct dhd_info *dhd, int ifidx, unsigned char * cp,
325 /* Send packet to dongle via data channel */
326 extern int dhd_sendpkt(dhd_pub_t *dhdp, int ifidx, struct sk_buff *pkt);
328 /* Send event to host */
329 extern void dhd_sendup_event(dhd_pub_t *dhdp, wl_event_msg_t *event,
331 extern int dhd_bus_devreset(dhd_pub_t *dhdp, u8 flag);
332 extern uint dhd_bus_status(dhd_pub_t *dhdp);
333 extern int dhd_bus_start(dhd_pub_t *dhdp);
335 typedef enum cust_gpio_modes {
342 * Insmod parameters for debug/test
345 /* Watchdog timer interval */
346 extern uint dhd_watchdog_ms;
348 #if defined(DHD_DEBUG)
349 /* Console output poll interval */
350 extern uint dhd_console_ms;
351 #endif /* defined(DHD_DEBUG) */
354 extern uint dhd_intr;
357 extern uint dhd_poll;
359 /* ARP offload agent mode */
360 extern uint dhd_arp_mode;
362 /* ARP offload enable */
363 extern uint dhd_arp_enable;
365 /* Pkt filte enable control */
366 extern uint dhd_pkt_filter_enable;
368 /* Pkt filter init setup */
369 extern uint dhd_pkt_filter_init;
371 /* Pkt filter mode control */
372 extern uint dhd_master_mode;
374 /* Roaming mode control */
375 extern uint dhd_roam;
377 /* Roaming mode control */
378 extern uint dhd_radio_up;
380 /* Initial idletime ticks (may be -1 for immediate idle, 0 for no idle) */
381 extern int dhd_idletime;
382 #define DHD_IDLETIME_TICKS 1
384 /* SDIO Drive Strength */
385 extern uint dhd_sdiod_drive_strength;
387 /* Override to force tx queueing all the time */
388 extern uint dhd_force_tx_queueing;
391 /* Echo packet generator (SDIO), pkts/s */
392 extern uint dhd_pktgen;
394 /* Echo packet len (0 => sawtooth, max 1800) */
395 extern uint dhd_pktgen_len;
396 #define MAX_PKTGEN_LEN 1800
399 /* optionally set by a module_param_string() */
400 #define MOD_PARAM_PATHLEN 2048
401 extern char fw_path[MOD_PARAM_PATHLEN];
402 extern char nv_path[MOD_PARAM_PATHLEN];
404 /* For supporting multiple interfaces */
405 #define DHD_MAX_IFS 16
406 #define DHD_DEL_IF -0xe
407 #define DHD_BAD_IF -0xf
409 extern void dhd_wait_for_event(dhd_pub_t *dhd, bool * lockvar);
410 extern void dhd_wait_event_wakeup(dhd_pub_t *dhd);