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Tilman Schmidt917f5082006-04-10 22:55:00 -07001/*
2 * Siemens Gigaset 307x driver
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -08003 * Common header file for all connection variants
4 *
Tilman Schmidt70440cf2006-04-10 22:55:14 -07005 * Written by Stefan Eilers
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -08006 * and Hansjoerg Lipp <hjlipp@web.de>
7 *
Tilman Schmidt917f5082006-04-10 22:55:00 -07008 * =====================================================================
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License as
11 * published by the Free Software Foundation; either version 2 of
12 * the License, or (at your option) any later version.
13 * =====================================================================
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -080014 */
15
16#ifndef GIGASET_H
17#define GIGASET_H
18
Tilman Schmidtc8770dc2008-12-26 01:21:29 -080019/* define global prefix for pr_ macros in linux/kernel.h */
20#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
21
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -080022#include <linux/kernel.h>
Linus Torvalds76e506a2010-04-19 11:53:17 -070023#include <linux/sched.h>
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -080024#include <linux/compiler.h>
25#include <linux/types.h>
Tilman Schmidtb91ecb02010-04-16 12:08:58 +000026#include <linux/ctype.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090027#include <linux/slab.h>
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -080028#include <linux/spinlock.h>
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -080029#include <linux/skbuff.h>
30#include <linux/netdevice.h>
31#include <linux/ppp_defs.h>
32#include <linux/timer.h>
33#include <linux/interrupt.h>
34#include <linux/tty.h>
35#include <linux/tty_driver.h>
36#include <linux/list.h>
Arun Sharma600634972011-07-26 16:09:06 -070037#include <linux/atomic.h>
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -080038
Tilman Schmidtd9ba9c92009-10-25 09:30:17 +000039#define GIG_VERSION {0, 5, 0, 0}
40#define GIG_COMPAT {0, 4, 0, 0}
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -080041
Tilman Schmidt917f5082006-04-10 22:55:00 -070042#define MAX_REC_PARAMS 10 /* Max. number of params in response string */
Tilman Schmidt63e055d2010-02-22 13:09:22 +000043#define MAX_RESP_SIZE 511 /* Max. size of a response string */
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -080044
Tilman Schmidt917f5082006-04-10 22:55:00 -070045#define MAX_EVENTS 64 /* size of event queue */
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -080046
47#define RBUFSIZE 8192
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -080048
Tilman Schmidtec81b5e62006-04-10 22:55:03 -070049#define GIG_TICK 100 /* in milliseconds */
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -080050
51/* timeout values (unit: 1 sec) */
52#define INIT_TIMEOUT 1
53
54/* timeout values (unit: 0.1 sec) */
55#define RING_TIMEOUT 3 /* for additional parameters to RING */
56#define BAS_TIMEOUT 20 /* for response to Base USB ops */
57#define ATRDY_TIMEOUT 3 /* for HD_READY_SEND_ATDATA */
58
59#define BAS_RETRY 3 /* max. retries for base USB ops */
60
61#define MAXACT 3
62
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -080063extern int gigaset_debuglevel; /* "needs" cast to (enum debuglevel) */
64
Tilman Schmidtc652cbd2008-02-06 01:38:24 -080065/* debug flags, combine by adding/bitwise OR */
Tilman Schmidt73a88812006-04-22 02:35:30 -070066enum debuglevel {
Tilman Schmidtc652cbd2008-02-06 01:38:24 -080067 DEBUG_INTR = 0x00008, /* interrupt processing */
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -080068 DEBUG_CMD = 0x00020, /* sent/received LL commands */
69 DEBUG_STREAM = 0x00040, /* application data stream I/O events */
70 DEBUG_STREAM_DUMP = 0x00080, /* application data stream content */
71 DEBUG_LLDATA = 0x00100, /* sent/received LL data */
Tilman Schmidt1528b182010-02-22 13:09:52 +000072 DEBUG_EVENT = 0x00200, /* event processing */
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -080073 DEBUG_HDLC = 0x00800, /* M10x HDLC processing */
Tilman Schmidt1528b182010-02-22 13:09:52 +000074 DEBUG_CHANNEL = 0x01000, /* channel allocation/deallocation */
Tilman Schmidt784d5852006-04-10 22:55:04 -070075 DEBUG_TRANSCMD = 0x02000, /* AT-COMMANDS+RESPONSES */
76 DEBUG_MCMD = 0x04000, /* COMMANDS THAT ARE SENT VERY OFTEN */
Tilman Schmidt917f5082006-04-10 22:55:00 -070077 DEBUG_INIT = 0x08000, /* (de)allocation+initialization of data
78 structures */
Tilman Schmidtc652cbd2008-02-06 01:38:24 -080079 DEBUG_SUSPEND = 0x10000, /* suspend/resume processing */
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -080080 DEBUG_OUTPUT = 0x20000, /* output to device */
Tilman Schmidt784d5852006-04-10 22:55:04 -070081 DEBUG_ISO = 0x40000, /* isochronous transfers */
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -080082 DEBUG_IF = 0x80000, /* character device operations */
Tilman Schmidt917f5082006-04-10 22:55:00 -070083 DEBUG_USBREQ = 0x100000, /* USB communication (except payload
84 data) */
Tilman Schmidt784d5852006-04-10 22:55:04 -070085 DEBUG_LOCKCMD = 0x200000, /* AT commands and responses when
Tilman Schmidt917f5082006-04-10 22:55:00 -070086 MS_LOCKED */
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -080087
Tilman Schmidt917f5082006-04-10 22:55:00 -070088 DEBUG_ANY = 0x3fffff, /* print message if any of the others is
89 activated */
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -080090};
91
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -080092#ifdef CONFIG_GIGASET_DEBUG
Tilman Schmidt784d5852006-04-10 22:55:04 -070093
Joe Perches475be4d2012-02-19 19:52:38 -080094#define gig_dbg(level, format, arg...) \
95 do { \
Tilman Schmidt917f5082006-04-10 22:55:00 -070096 if (unlikely(((enum debuglevel)gigaset_debuglevel) & (level))) \
Tilman Schmidt784d5852006-04-10 22:55:04 -070097 printk(KERN_DEBUG KBUILD_MODNAME ": " format "\n", \
Joe Perches475be4d2012-02-19 19:52:38 -080098 ## arg); \
Tilman Schmidt917f5082006-04-10 22:55:00 -070099 } while (0)
Tilman Schmidt73a88812006-04-22 02:35:30 -0700100#define DEBUG_DEFAULT (DEBUG_TRANSCMD | DEBUG_CMD | DEBUG_USBREQ)
Tilman Schmidt784d5852006-04-10 22:55:04 -0700101
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800102#else
Tilman Schmidt784d5852006-04-10 22:55:04 -0700103
104#define gig_dbg(level, format, arg...) do {} while (0)
105#define DEBUG_DEFAULT 0
106
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800107#endif
108
109void gigaset_dbg_buffer(enum debuglevel level, const unsigned char *msg,
Tilman Schmidt01371502006-04-10 22:55:11 -0700110 size_t len, const unsigned char *buf);
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800111
112/* connection state */
113#define ZSAU_NONE 0
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800114#define ZSAU_PROCEEDING 1
115#define ZSAU_CALL_DELIVERED 2
116#define ZSAU_ACTIVE 3
Tilman Schmidt63b203b2013-01-21 11:57:21 +0000117#define ZSAU_DISCONNECT_IND 4
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800118#define ZSAU_NULL 5
119#define ZSAU_DISCONNECT_REQ 6
120#define ZSAU_UNKNOWN -1
121
122/* USB control transfer requests */
Tilman Schmidt917f5082006-04-10 22:55:00 -0700123#define OUT_VENDOR_REQ (USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT)
124#define IN_VENDOR_REQ (USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT)
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800125
Tilman Schmidtd9ba9c92009-10-25 09:30:17 +0000126/* interrupt pipe messages */
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800127#define HD_B1_FLOW_CONTROL 0x80
128#define HD_B2_FLOW_CONTROL 0x81
Tilman Schmidtd9ba9c92009-10-25 09:30:17 +0000129#define HD_RECEIVEATDATA_ACK (0x35) /* 3070 */
130#define HD_READY_SEND_ATDATA (0x36) /* 3070 */
131#define HD_OPEN_ATCHANNEL_ACK (0x37) /* 3070 */
132#define HD_CLOSE_ATCHANNEL_ACK (0x38) /* 3070 */
133#define HD_DEVICE_INIT_OK (0x11) /* ISurf USB + 3070 */
134#define HD_OPEN_B1CHANNEL_ACK (0x51) /* ISurf USB + 3070 */
135#define HD_OPEN_B2CHANNEL_ACK (0x52) /* ISurf USB + 3070 */
136#define HD_CLOSE_B1CHANNEL_ACK (0x53) /* ISurf USB + 3070 */
137#define HD_CLOSE_B2CHANNEL_ACK (0x54) /* ISurf USB + 3070 */
138#define HD_SUSPEND_END (0x61) /* ISurf USB */
139#define HD_RESET_INTERRUPT_PIPE_ACK (0xFF) /* ISurf USB + 3070 */
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800140
Tilman Schmidtd9ba9c92009-10-25 09:30:17 +0000141/* control requests */
142#define HD_OPEN_B1CHANNEL (0x23) /* ISurf USB + 3070 */
143#define HD_CLOSE_B1CHANNEL (0x24) /* ISurf USB + 3070 */
144#define HD_OPEN_B2CHANNEL (0x25) /* ISurf USB + 3070 */
145#define HD_CLOSE_B2CHANNEL (0x26) /* ISurf USB + 3070 */
146#define HD_RESET_INTERRUPT_PIPE (0x27) /* ISurf USB + 3070 */
147#define HD_DEVICE_INIT_ACK (0x34) /* ISurf USB + 3070 */
148#define HD_WRITE_ATMESSAGE (0x12) /* 3070 */
149#define HD_READ_ATMESSAGE (0x13) /* 3070 */
150#define HD_OPEN_ATCHANNEL (0x28) /* 3070 */
151#define HD_CLOSE_ATCHANNEL (0x29) /* 3070 */
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800152
Tilman Schmidtc652cbd2008-02-06 01:38:24 -0800153/* number of B channels supported by base driver */
154#define BAS_CHANNELS 2
155
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800156/* USB frames for isochronous transfer */
Tilman Schmidt917f5082006-04-10 22:55:00 -0700157#define BAS_FRAMETIME 1 /* number of milliseconds between frames */
158#define BAS_NUMFRAMES 8 /* number of frames per URB */
159#define BAS_MAXFRAME 16 /* allocated bytes per frame */
160#define BAS_NORMFRAME 8 /* send size without flow control */
161#define BAS_HIGHFRAME 10 /* " " with positive flow control */
162#define BAS_LOWFRAME 5 /* " " with negative flow control */
163#define BAS_CORRFRAMES 4 /* flow control multiplicator */
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800164
Tilman Schmidtf86936f2012-04-25 13:02:20 +0000165#define BAS_INBUFSIZE (BAS_MAXFRAME * BAS_NUMFRAMES) /* size of isoc in buf
166 * per URB */
Tilman Schmidt917f5082006-04-10 22:55:00 -0700167#define BAS_OUTBUFSIZE 4096 /* size of common isoc out buffer */
168#define BAS_OUTBUFPAD BAS_MAXFRAME /* size of pad area for isoc out buf */
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800169
170#define BAS_INURBS 3
171#define BAS_OUTURBS 3
172
173/* variable commands in struct bc_state */
174#define AT_ISO 0
175#define AT_DIAL 1
176#define AT_MSN 2
177#define AT_BC 3
178#define AT_PROTO 4
179#define AT_TYPE 5
Tilman Schmidt1ce368f2010-06-21 13:55:05 +0000180#define AT_CLIP 6
Tilman Schmidt7bb5fdc2009-10-06 12:19:17 +0000181/* total number */
Tilman Schmidt1ce368f2010-06-21 13:55:05 +0000182#define AT_NUM 7
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800183
184/* variables in struct at_state_t */
Tilman Schmidt63b203b2013-01-21 11:57:21 +0000185/* - numeric */
Tilman Schmidt917f5082006-04-10 22:55:00 -0700186#define VAR_ZSAU 0
187#define VAR_ZDLE 1
Tilman Schmidt2ed5e4f2010-07-05 14:18:48 +0000188#define VAR_ZCTP 2
Tilman Schmidt63b203b2013-01-21 11:57:21 +0000189/* total number */
Tilman Schmidt2ed5e4f2010-07-05 14:18:48 +0000190#define VAR_NUM 3
Tilman Schmidt63b203b2013-01-21 11:57:21 +0000191/* - string */
Tilman Schmidt917f5082006-04-10 22:55:00 -0700192#define STR_NMBR 0
193#define STR_ZCPN 1
194#define STR_ZCON 2
195#define STR_ZBC 3
196#define STR_ZHLC 4
Tilman Schmidt63b203b2013-01-21 11:57:21 +0000197/* total number */
Tilman Schmidt917f5082006-04-10 22:55:00 -0700198#define STR_NUM 5
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800199
Tilman Schmidt63b203b2013-01-21 11:57:21 +0000200/* event types */
Tilman Schmidt917f5082006-04-10 22:55:00 -0700201#define EV_TIMEOUT -105
202#define EV_IF_VER -106
203#define EV_PROC_CIDMODE -107
204#define EV_SHUTDOWN -108
205#define EV_START -110
206#define EV_STOP -111
207#define EV_IF_LOCK -112
Tilman Schmidt917f5082006-04-10 22:55:00 -0700208#define EV_ACCEPT -114
209#define EV_DIAL -115
210#define EV_HUP -116
211#define EV_BC_OPEN -117
212#define EV_BC_CLOSED -118
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800213
214/* input state */
Tilman Schmidt2032e2c2009-10-25 09:30:07 +0000215#define INS_command 0x0001 /* receiving messages (not payload data) */
216#define INS_DLE_char 0x0002 /* DLE flag received (in DLE mode) */
Tilman Schmidt917f5082006-04-10 22:55:00 -0700217#define INS_byte_stuff 0x0004
218#define INS_have_data 0x0008
Tilman Schmidt2032e2c2009-10-25 09:30:07 +0000219#define INS_DLE_command 0x0020 /* DLE message start (<DLE> X) received */
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800220#define INS_flag_hunt 0x0040
221
222/* channel state */
223#define CHS_D_UP 0x01
224#define CHS_B_UP 0x02
225#define CHS_NOTIFY_LL 0x04
226
Tilman Schmidt917f5082006-04-10 22:55:00 -0700227#define ICALL_REJECT 0
228#define ICALL_ACCEPT 1
229#define ICALL_IGNORE 2
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800230
231/* device state */
Tilman Schmidt917f5082006-04-10 22:55:00 -0700232#define MS_UNINITIALIZED 0
233#define MS_INIT 1
234#define MS_LOCKED 2
235#define MS_SHUTDOWN 3
236#define MS_RECOVER 4
237#define MS_READY 5
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800238
239/* mode */
Tilman Schmidt917f5082006-04-10 22:55:00 -0700240#define M_UNKNOWN 0
241#define M_CONFIG 1
242#define M_UNIMODEM 2
243#define M_CID 3
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800244
245/* start mode */
Tilman Schmidt917f5082006-04-10 22:55:00 -0700246#define SM_LOCKED 0
247#define SM_ISDN 1 /* default */
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800248
Tilman Schmidt088ec0c2009-10-06 12:19:07 +0000249/* layer 2 protocols (AT^SBPR=...) */
250#define L2_BITSYNC 0
251#define L2_HDLC 1
252#define L2_VOICE 2
253
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800254struct gigaset_ops;
255struct gigaset_driver;
256
257struct usb_cardstate;
258struct ser_cardstate;
259struct bas_cardstate;
260
261struct bc_state;
262struct usb_bc_state;
263struct ser_bc_state;
264struct bas_bc_state;
265
266struct reply_t {
Tilman Schmidt917f5082006-04-10 22:55:00 -0700267 int resp_code; /* RSP_XXXX */
268 int min_ConState; /* <0 => ignore */
269 int max_ConState; /* <0 => ignore */
270 int parameter; /* e.g. ZSAU_XXXX <0: ignore*/
271 int new_ConState; /* <0 => ignore */
272 int timeout; /* >0 => *HZ; <=0 => TOUT_XXXX*/
273 int action[MAXACT]; /* ACT_XXXX */
274 char *command; /* NULL==none */
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800275};
276
Tilman Schmidt528efc62009-05-13 12:44:17 +0000277extern struct reply_t gigaset_tab_cid[];
278extern struct reply_t gigaset_tab_nocid[];
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800279
280struct inbuf_t {
Tilman Schmidt917f5082006-04-10 22:55:00 -0700281 struct cardstate *cs;
282 int inputstate;
Tilman Schmidt9d4bee22008-02-06 01:38:28 -0800283 int head, tail;
Tilman Schmidt917f5082006-04-10 22:55:00 -0700284 unsigned char data[RBUFSIZE];
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800285};
286
287/* isochronous write buffer structure
288 * circular buffer with pad area for extraction of complete USB frames
289 * - data[read..nextread-1] is valid data already submitted to the USB subsystem
290 * - data[nextread..write-1] is valid data yet to be sent
291 * - data[write] is the next byte to write to
292 * - in byte-oriented L2 procotols, it is completely free
293 * - in bit-oriented L2 procotols, it may contain a partial byte of valid data
294 * - data[write+1..read-1] is free
295 * - wbits is the number of valid data bits in data[write], starting at the LSB
296 * - writesem is the semaphore for writing to the buffer:
297 * if writesem <= 0, data[write..read-1] is currently being written to
298 * - idle contains the byte value to repeat when the end of valid data is
299 * reached; if nextread==write (buffer contains no data to send), either the
Tilman Schmidt917f5082006-04-10 22:55:00 -0700300 * BAS_OUTBUFPAD bytes immediately before data[write] (if
301 * write>=BAS_OUTBUFPAD) or those of the pad area (if write<BAS_OUTBUFPAD)
302 * are also filled with that value
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800303 */
304struct isowbuf_t {
Tilman Schmidt9d4bee22008-02-06 01:38:28 -0800305 int read;
306 int nextread;
307 int write;
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800308 atomic_t writesem;
309 int wbits;
310 unsigned char data[BAS_OUTBUFSIZE + BAS_OUTBUFPAD];
311 unsigned char idle;
312};
313
314/* isochronous write URB context structure
315 * data to be stored along with the URB and retrieved when it is returned
316 * as completed by the USB subsystem
317 * - urb: pointer to the URB itself
318 * - bcs: pointer to the B Channel control structure
319 * - limit: end of write buffer area covered by this URB
Tilman Schmidtdbd98232008-02-06 01:38:23 -0800320 * - status: URB completion status
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800321 */
322struct isow_urbctx_t {
323 struct urb *urb;
324 struct bc_state *bcs;
325 int limit;
Tilman Schmidtdbd98232008-02-06 01:38:23 -0800326 int status;
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800327};
328
329/* AT state structure
330 * data associated with the state of an ISDN connection, whether or not
331 * it is currently assigned a B channel
332 */
333struct at_state_t {
Tilman Schmidt917f5082006-04-10 22:55:00 -0700334 struct list_head list;
335 int waiting;
336 int getstring;
Tilman Schmidt69049cc2006-04-10 22:55:16 -0700337 unsigned timer_index;
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800338 unsigned long timer_expires;
339 int timer_active;
Tilman Schmidt917f5082006-04-10 22:55:00 -0700340 unsigned int ConState; /* State of connection */
341 struct reply_t *replystruct;
342 int cid;
343 int int_var[VAR_NUM]; /* see VAR_XXXX */
344 char *str_var[STR_NUM]; /* see STR_XXXX */
345 unsigned pending_commands; /* see PC_XXXX */
Tilman Schmidt69049cc2006-04-10 22:55:16 -0700346 unsigned seq_index;
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800347
Tilman Schmidt917f5082006-04-10 22:55:00 -0700348 struct cardstate *cs;
349 struct bc_state *bcs;
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800350};
351
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800352struct event_t {
353 int type;
354 void *ptr, *arg;
355 int parameter;
356 int cid;
357 struct at_state_t *at_state;
358};
359
360/* This buffer holds all information about the used B-Channel */
361struct bc_state {
Tilman Schmidt917f5082006-04-10 22:55:00 -0700362 struct sk_buff *tx_skb; /* Current transfer buffer to modem */
363 struct sk_buff_head squeue; /* B-Channel send Queue */
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800364
365 /* Variables for debugging .. */
Tilman Schmidt917f5082006-04-10 22:55:00 -0700366 int corrupted; /* Counter for corrupted packages */
367 int trans_down; /* Counter of packages (downstream) */
368 int trans_up; /* Counter of packages (upstream) */
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800369
370 struct at_state_t at_state;
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800371
Tilman Schmidte7752ee2010-06-21 13:54:19 +0000372 /* receive buffer */
373 unsigned rx_bufsize; /* max size accepted by application */
374 struct sk_buff *rx_skb;
375 __u16 rx_fcs;
Tilman Schmidt917f5082006-04-10 22:55:00 -0700376 int inputstate; /* see INS_XXXX */
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800377
378 int channel;
379
380 struct cardstate *cs;
381
Tilman Schmidt917f5082006-04-10 22:55:00 -0700382 unsigned chstate; /* bitmap (CHS_*) */
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800383 int ignore;
Tilman Schmidt088ec0c2009-10-06 12:19:07 +0000384 unsigned proto2; /* layer 2 protocol (L2_*) */
Tilman Schmidt917f5082006-04-10 22:55:00 -0700385 char *commands[AT_NUM]; /* see AT_XXXX */
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800386
387#ifdef CONFIG_GIGASET_DEBUG
388 int emptycount;
389#endif
390 int busy;
391 int use_count;
392
Tilman Schmidt784d5852006-04-10 22:55:04 -0700393 /* private data of hardware drivers */
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800394 union {
Tilman Schmidt917f5082006-04-10 22:55:00 -0700395 struct ser_bc_state *ser; /* serial hardware driver */
396 struct usb_bc_state *usb; /* usb hardware driver (m105) */
397 struct bas_bc_state *bas; /* usb hardware driver (base) */
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800398 } hw;
Tilman Schmidt7bb5fdc2009-10-06 12:19:17 +0000399
Tilman Schmidt1b4843c2010-06-21 13:55:20 +0000400 void *ap; /* associated LL application */
401 int apconnstate; /* LL application connection state */
402 spinlock_t aplock;
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800403};
404
405struct cardstate {
406 struct gigaset_driver *driver;
407 unsigned minor_index;
Tilman Schmidt784d5852006-04-10 22:55:04 -0700408 struct device *dev;
Greg Kroah-Hartman01107d32006-08-07 22:19:37 -0700409 struct device *tty_dev;
Tilman Schmidte468c042008-02-06 01:38:29 -0800410 unsigned flags;
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800411
412 const struct gigaset_ops *ops;
413
414 /* Stuff to handle communication */
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800415 wait_queue_head_t waitqueue;
416 int waiting;
Tilman Schmidt9d4bee22008-02-06 01:38:28 -0800417 int mode; /* see M_XXXX */
418 int mstate; /* Modem state: see MS_XXXX */
Tilman Schmidt917f5082006-04-10 22:55:00 -0700419 /* only changed by the event layer */
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800420 int cmd_result;
421
422 int channels;
Tilman Schmidt917f5082006-04-10 22:55:00 -0700423 struct bc_state *bcs; /* Array of struct bc_state */
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800424
Tilman Schmidt917f5082006-04-10 22:55:00 -0700425 int onechannel; /* data and commands transmitted in one
426 stream (M10x) */
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800427
428 spinlock_t lock;
Tilman Schmidt917f5082006-04-10 22:55:00 -0700429 struct at_state_t at_state; /* at_state_t for cid == 0 */
430 struct list_head temp_at_states;/* list of temporary "struct
431 at_state_t"s without B channel */
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800432
433 struct inbuf_t *inbuf;
434
435 struct cmdbuf_t *cmdbuf, *lastcmdbuf;
436 spinlock_t cmdlock;
437 unsigned curlen, cmdbytes;
438
Jiri Slaby48a74662012-03-05 14:52:55 +0100439 struct tty_port port;
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800440 struct tasklet_struct if_wake_tasklet;
441 unsigned control_state;
442
443 unsigned fwver[4];
444 int gotfwver;
445
Tilman Schmidt69049cc2006-04-10 22:55:16 -0700446 unsigned running; /* !=0 if events are handled */
447 unsigned connected; /* !=0 if hardware is connected */
Tilman Schmidt088ec0c2009-10-06 12:19:07 +0000448 unsigned isdn_up; /* !=0 after gigaset_isdn_start() */
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800449
Tilman Schmidt69049cc2006-04-10 22:55:16 -0700450 unsigned cidmode;
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800451
Tilman Schmidt917f5082006-04-10 22:55:00 -0700452 int myid; /* id for communication with LL */
Tilman Schmidt088ec0c2009-10-06 12:19:07 +0000453 void *iif; /* LL interface structure */
454 unsigned short hw_hdr_len; /* headroom needed in data skbs */
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800455
456 struct reply_t *tabnocid;
457 struct reply_t *tabcid;
458 int cs_init;
Tilman Schmidt917f5082006-04-10 22:55:00 -0700459 int ignoreframes; /* frames to ignore after setting up the
460 B channel */
Tilman Schmidtabfd1dc2006-04-10 22:55:12 -0700461 struct mutex mutex; /* locks this structure:
Tilman Schmidt784d5852006-04-10 22:55:04 -0700462 * connected is not changed,
463 * hardware_up is not changed,
464 * MState is not changed to or from
465 * MS_LOCKED */
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800466
467 struct timer_list timer;
468 int retry_count;
Tilman Schmidt2032e2c2009-10-25 09:30:07 +0000469 int dle; /* !=0 if DLE mode is active
470 (ZDLE=1 received -- M10x only) */
Tilman Schmidt917f5082006-04-10 22:55:00 -0700471 int cur_at_seq; /* sequence of AT commands being
472 processed */
Tilman Schmidt784d5852006-04-10 22:55:04 -0700473 int curchannel; /* channel those commands are meant
Tilman Schmidt917f5082006-04-10 22:55:00 -0700474 for */
Tilman Schmidt9d4bee22008-02-06 01:38:28 -0800475 int commands_pending; /* flag(s) in xxx.commands_pending have
Tilman Schmidt917f5082006-04-10 22:55:00 -0700476 been set */
Tilman Schmidtf86936f2012-04-25 13:02:20 +0000477 struct tasklet_struct
478 event_tasklet; /* tasklet for serializing AT commands.
479 * Scheduled
480 * -> for modem reponses (and
481 * incoming data for M10x)
482 * -> on timeout
483 * -> after setting bits in
484 * xxx.at_state.pending_command
485 * (e.g. command from LL) */
486 struct tasklet_struct
487 write_tasklet; /* tasklet for serial output
488 * (not used in base driver) */
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800489
490 /* event queue */
491 struct event_t events[MAX_EVENTS];
Tilman Schmidt69049cc2006-04-10 22:55:16 -0700492 unsigned ev_tail, ev_head;
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800493 spinlock_t ev_lock;
494
495 /* current modem response */
Joe Perches475be4d2012-02-19 19:52:38 -0800496 unsigned char respdata[MAX_RESP_SIZE + 1];
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800497 unsigned cbytes;
498
Tilman Schmidt784d5852006-04-10 22:55:04 -0700499 /* private data of hardware drivers */
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800500 union {
Tilman Schmidt917f5082006-04-10 22:55:00 -0700501 struct usb_cardstate *usb; /* USB hardware driver (m105) */
502 struct ser_cardstate *ser; /* serial hardware driver */
503 struct bas_cardstate *bas; /* USB hardware driver (base) */
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800504 } hw;
505};
506
507struct gigaset_driver {
508 struct list_head list;
Tilman Schmidt917f5082006-04-10 22:55:00 -0700509 spinlock_t lock; /* locks minor tables and blocked */
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800510 struct tty_driver *tty;
511 unsigned have_tty;
512 unsigned minor;
513 unsigned minors;
514 struct cardstate *cs;
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800515 int blocked;
516
517 const struct gigaset_ops *ops;
518 struct module *owner;
519};
520
521struct cmdbuf_t {
522 struct cmdbuf_t *next, *prev;
523 int len, offset;
524 struct tasklet_struct *wake_tasklet;
525 unsigned char buf[0];
526};
527
528struct bas_bc_state {
529 /* isochronous output state */
Tilman Schmidt9d4bee22008-02-06 01:38:28 -0800530 int running;
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800531 atomic_t corrbytes;
532 spinlock_t isooutlock;
533 struct isow_urbctx_t isoouturbs[BAS_OUTURBS];
534 struct isow_urbctx_t *isooutdone, *isooutfree, *isooutovfl;
535 struct isowbuf_t *isooutbuf;
Tilman Schmidt784d5852006-04-10 22:55:04 -0700536 unsigned numsub; /* submitted URB counter
537 (for diagnostic messages only) */
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800538 struct tasklet_struct sent_tasklet;
539
540 /* isochronous input state */
541 spinlock_t isoinlock;
542 struct urb *isoinurbs[BAS_INURBS];
543 unsigned char isoinbuf[BAS_INBUFSIZE * BAS_INURBS];
Tilman Schmidt784d5852006-04-10 22:55:04 -0700544 struct urb *isoindone; /* completed isoc read URB */
Tilman Schmidtdbd98232008-02-06 01:38:23 -0800545 int isoinstatus; /* status of completed URB */
Tilman Schmidt784d5852006-04-10 22:55:04 -0700546 int loststatus; /* status of dropped URB */
547 unsigned isoinlost; /* number of bytes lost */
548 /* state of bit unstuffing algorithm
549 (in addition to BC_state.inputstate) */
550 unsigned seqlen; /* number of '1' bits not yet
551 unstuffed */
552 unsigned inbyte, inbits; /* collected bits for next byte */
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800553 /* statistics */
Tilman Schmidt784d5852006-04-10 22:55:04 -0700554 unsigned goodbytes; /* bytes correctly received */
555 unsigned alignerrs; /* frames with incomplete byte at end */
556 unsigned fcserrs; /* FCS errors */
557 unsigned frameerrs; /* framing errors */
558 unsigned giants; /* long frames */
559 unsigned runts; /* short frames */
560 unsigned aborts; /* HDLC aborts */
561 unsigned shared0s; /* '0' bits shared between flags */
562 unsigned stolen0s; /* '0' stuff bits also serving as
563 leading flag bits */
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800564 struct tasklet_struct rcvd_tasklet;
565};
566
567struct gigaset_ops {
Tilman Schmidt917f5082006-04-10 22:55:00 -0700568 /* Called from ev-layer.c/interface.c for sending AT commands to the
569 device */
Tilman Schmidte3628dd2010-07-05 14:18:43 +0000570 int (*write_cmd)(struct cardstate *cs, struct cmdbuf_t *cb);
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800571
572 /* Called from interface.c for additional device control */
573 int (*write_room)(struct cardstate *cs);
574 int (*chars_in_buffer)(struct cardstate *cs);
575 int (*brkchars)(struct cardstate *cs, const unsigned char buf[6]);
576
577 /* Called from ev-layer.c after setting up connection
578 * Should call gigaset_bchannel_up(), when finished. */
579 int (*init_bchannel)(struct bc_state *bcs);
580
581 /* Called from ev-layer.c after hanging up
582 * Should call gigaset_bchannel_down(), when finished. */
583 int (*close_bchannel)(struct bc_state *bcs);
584
585 /* Called by gigaset_initcs() for setting up bcs->hw.xxx */
586 int (*initbcshw)(struct bc_state *bcs);
587
588 /* Called by gigaset_freecs() for freeing bcs->hw.xxx */
Tilman Schmidt81fa7b82012-04-25 13:02:20 +0000589 void (*freebcshw)(struct bc_state *bcs);
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800590
Tilman Schmidt73a88812006-04-22 02:35:30 -0700591 /* Called by gigaset_bchannel_down() for resetting bcs->hw.xxx */
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800592 void (*reinitbcshw)(struct bc_state *bcs);
593
594 /* Called by gigaset_initcs() for setting up cs->hw.xxx */
595 int (*initcshw)(struct cardstate *cs);
596
597 /* Called by gigaset_freecs() for freeing cs->hw.xxx */
598 void (*freecshw)(struct cardstate *cs);
599
Tilman Schmidt917f5082006-04-10 22:55:00 -0700600 /* Called from common.c/interface.c for additional serial port
601 control */
602 int (*set_modem_ctrl)(struct cardstate *cs, unsigned old_state,
603 unsigned new_state);
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800604 int (*baud_rate)(struct cardstate *cs, unsigned cflag);
605 int (*set_line_ctrl)(struct cardstate *cs, unsigned cflag);
606
Tilman Schmidt088ec0c2009-10-06 12:19:07 +0000607 /* Called from LL interface to put an skb into the send-queue.
608 * After sending is completed, gigaset_skb_sent() must be called
Tilman Schmidt4dd82302009-10-25 09:29:57 +0000609 * with the skb's link layer header preserved. */
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800610 int (*send_skb)(struct bc_state *bcs, struct sk_buff *skb);
611
612 /* Called from ev-layer.c to process a block of data
613 * received through the common/control channel. */
614 void (*handle_input)(struct inbuf_t *inbuf);
615
616};
617
Tilman Schmidtd9ba9c92009-10-25 09:30:17 +0000618/* = Common structures and definitions =======================================
619 */
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800620
621/* Parser states for DLE-Event:
622 * <DLE-EVENT>: <DLE_FLAG> "X" <EVENT> <DLE_FLAG> "."
623 * <DLE_FLAG>: 0x10
624 * <EVENT>: ((a-z)* | (A-Z)* | (0-10)*)+
625 */
Tilman Schmidt784d5852006-04-10 22:55:04 -0700626#define DLE_FLAG 0x10
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800627
628/* ===========================================================================
629 * Functions implemented in asyncdata.c
630 */
631
Tilman Schmidt088ec0c2009-10-06 12:19:07 +0000632/* Called from LL interface to put an skb into the send queue. */
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800633int gigaset_m10x_send_skb(struct bc_state *bcs, struct sk_buff *skb);
634
635/* Called from ev-layer.c to process a block of data
636 * received through the common/control channel. */
637void gigaset_m10x_input(struct inbuf_t *inbuf);
638
639/* ===========================================================================
640 * Functions implemented in isocdata.c
641 */
642
Tilman Schmidt088ec0c2009-10-06 12:19:07 +0000643/* Called from LL interface to put an skb into the send queue. */
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800644int gigaset_isoc_send_skb(struct bc_state *bcs, struct sk_buff *skb);
645
646/* Called from ev-layer.c to process a block of data
647 * received through the common/control channel. */
648void gigaset_isoc_input(struct inbuf_t *inbuf);
649
650/* Called from bas-gigaset.c to process a block of data
651 * received through the isochronous channel */
Tilman Schmidt917f5082006-04-10 22:55:00 -0700652void gigaset_isoc_receive(unsigned char *src, unsigned count,
653 struct bc_state *bcs);
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800654
655/* Called from bas-gigaset.c to put a block of data
656 * into the isochronous output buffer */
657int gigaset_isoc_buildframe(struct bc_state *bcs, unsigned char *in, int len);
658
659/* Called from bas-gigaset.c to initialize the isochronous output buffer */
660void gigaset_isowbuf_init(struct isowbuf_t *iwb, unsigned char idle);
661
662/* Called from bas-gigaset.c to retrieve a block of bytes for sending */
663int gigaset_isowbuf_getbytes(struct isowbuf_t *iwb, int size);
664
665/* ===========================================================================
Tilman Schmidt088ec0c2009-10-06 12:19:07 +0000666 * Functions implemented in LL interface
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800667 */
668
Tilman Schmidt088ec0c2009-10-06 12:19:07 +0000669/* Called from common.c for setting up/shutting down with the ISDN subsystem */
Tilman Schmidtbc35b4e2010-03-14 12:58:05 +0000670void gigaset_isdn_regdrv(void);
671void gigaset_isdn_unregdrv(void);
672int gigaset_isdn_regdev(struct cardstate *cs, const char *isdnid);
673void gigaset_isdn_unregdev(struct cardstate *cs);
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800674
Tilman Schmidt088ec0c2009-10-06 12:19:07 +0000675/* Called from hardware module to indicate completion of an skb */
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800676void gigaset_skb_sent(struct bc_state *bcs, struct sk_buff *skb);
Tilman Schmidt088ec0c2009-10-06 12:19:07 +0000677void gigaset_skb_rcvd(struct bc_state *bcs, struct sk_buff *skb);
678void gigaset_isdn_rcv_err(struct bc_state *bcs);
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800679
680/* Called from common.c/ev-layer.c to indicate events relevant to the LL */
Tilman Schmidt088ec0c2009-10-06 12:19:07 +0000681void gigaset_isdn_start(struct cardstate *cs);
682void gigaset_isdn_stop(struct cardstate *cs);
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800683int gigaset_isdn_icall(struct at_state_t *at_state);
Tilman Schmidt088ec0c2009-10-06 12:19:07 +0000684void gigaset_isdn_connD(struct bc_state *bcs);
685void gigaset_isdn_hupD(struct bc_state *bcs);
686void gigaset_isdn_connB(struct bc_state *bcs);
687void gigaset_isdn_hupB(struct bc_state *bcs);
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800688
689/* ===========================================================================
690 * Functions implemented in ev-layer.c
691 */
692
693/* tasklet called from common.c to process queued events */
694void gigaset_handle_event(unsigned long data);
695
696/* called from isocdata.c / asyncdata.c
697 * when a complete modem response line has been received */
698void gigaset_handle_modem_response(struct cardstate *cs);
699
700/* ===========================================================================
701 * Functions implemented in proc.c
702 */
703
704/* initialize sysfs for device */
Tilman Schmidtb1d47462006-04-10 22:55:07 -0700705void gigaset_init_dev_sysfs(struct cardstate *cs);
706void gigaset_free_dev_sysfs(struct cardstate *cs);
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800707
708/* ===========================================================================
709 * Functions implemented in common.c/gigaset.h
710 */
711
712void gigaset_bcs_reinit(struct bc_state *bcs);
713void gigaset_at_init(struct at_state_t *at_state, struct bc_state *bcs,
Tilman Schmidt784d5852006-04-10 22:55:04 -0700714 struct cardstate *cs, int cid);
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800715int gigaset_get_channel(struct bc_state *bcs);
Tilman Schmidt7bb5fdc2009-10-06 12:19:17 +0000716struct bc_state *gigaset_get_free_channel(struct cardstate *cs);
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800717void gigaset_free_channel(struct bc_state *bcs);
718int gigaset_get_channels(struct cardstate *cs);
719void gigaset_free_channels(struct cardstate *cs);
720void gigaset_block_channels(struct cardstate *cs);
721
722/* Allocate and initialize driver structure. */
723struct gigaset_driver *gigaset_initdriver(unsigned minor, unsigned minors,
Tilman Schmidt784d5852006-04-10 22:55:04 -0700724 const char *procname,
725 const char *devname,
Tilman Schmidt784d5852006-04-10 22:55:04 -0700726 const struct gigaset_ops *ops,
727 struct module *owner);
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800728
729/* Deallocate driver structure. */
730void gigaset_freedriver(struct gigaset_driver *drv);
Tilman Schmidtbefba362010-09-30 13:35:01 +0000731
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800732struct cardstate *gigaset_get_cs_by_tty(struct tty_struct *tty);
733struct cardstate *gigaset_get_cs_by_id(int id);
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800734void gigaset_blockdriver(struct gigaset_driver *drv);
735
Tilman Schmidt917f5082006-04-10 22:55:00 -0700736/* Allocate and initialize card state. Calls hardware dependent
737 gigaset_init[b]cs(). */
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800738struct cardstate *gigaset_initcs(struct gigaset_driver *drv, int channels,
739 int onechannel, int ignoreframes,
740 int cidmode, const char *modulename);
741
742/* Free card state. Calls hardware dependent gigaset_free[b]cs(). */
743void gigaset_freecs(struct cardstate *cs);
744
745/* Tell common.c that hardware and driver are ready. */
746int gigaset_start(struct cardstate *cs);
747
748/* Tell common.c that the device is not present any more. */
749void gigaset_stop(struct cardstate *cs);
750
751/* Tell common.c that the driver is being unloaded. */
Tilman Schmidte468c042008-02-06 01:38:29 -0800752int gigaset_shutdown(struct cardstate *cs);
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800753
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800754/* Append event to the queue.
755 * Returns NULL on failure or a pointer to the event on success.
756 * ptr must be kmalloc()ed (and not be freed by the caller).
757 */
758struct event_t *gigaset_add_event(struct cardstate *cs,
Tilman Schmidt784d5852006-04-10 22:55:04 -0700759 struct at_state_t *at_state, int type,
760 void *ptr, int parameter, void *arg);
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800761
762/* Called on CONFIG1 command from frontend. */
Tilman Schmidtd9ba9c92009-10-25 09:30:17 +0000763int gigaset_enterconfigmode(struct cardstate *cs);
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800764
765/* cs->lock must not be locked */
766static inline void gigaset_schedule_event(struct cardstate *cs)
767{
768 unsigned long flags;
769 spin_lock_irqsave(&cs->lock, flags);
Tilman Schmidt69049cc2006-04-10 22:55:16 -0700770 if (cs->running)
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800771 tasklet_schedule(&cs->event_tasklet);
772 spin_unlock_irqrestore(&cs->lock, flags);
773}
774
775/* Tell common.c that B channel has been closed. */
776/* cs->lock must not be locked */
777static inline void gigaset_bchannel_down(struct bc_state *bcs)
778{
779 gigaset_add_event(bcs->cs, &bcs->at_state, EV_BC_CLOSED, NULL, 0, NULL);
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800780 gigaset_schedule_event(bcs->cs);
781}
782
783/* Tell common.c that B channel has been opened. */
784/* cs->lock must not be locked */
785static inline void gigaset_bchannel_up(struct bc_state *bcs)
786{
787 gigaset_add_event(bcs->cs, &bcs->at_state, EV_BC_OPEN, NULL, 0, NULL);
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800788 gigaset_schedule_event(bcs->cs);
789}
790
Tilman Schmidte7752ee2010-06-21 13:54:19 +0000791/* set up next receive skb for data mode */
792static inline struct sk_buff *gigaset_new_rx_skb(struct bc_state *bcs)
793{
794 struct cardstate *cs = bcs->cs;
795 unsigned short hw_hdr_len = cs->hw_hdr_len;
796
797 if (bcs->ignore) {
798 bcs->rx_skb = NULL;
799 } else {
800 bcs->rx_skb = dev_alloc_skb(bcs->rx_bufsize + hw_hdr_len);
801 if (bcs->rx_skb == NULL)
802 dev_warn(cs->dev, "could not allocate skb\n");
803 else
804 skb_reserve(bcs->rx_skb, hw_hdr_len);
805 }
806 return bcs->rx_skb;
807}
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800808
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800809/* append received bytes to inbuf */
Tilman Schmidt714e8232006-04-10 22:55:09 -0700810int gigaset_fill_inbuf(struct inbuf_t *inbuf, const unsigned char *src,
811 unsigned numbytes);
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800812
813/* ===========================================================================
814 * Functions implemented in interface.c
815 */
816
817/* initialize interface */
818void gigaset_if_initdriver(struct gigaset_driver *drv, const char *procname,
Greg Kroah-Hartmanf4eaa372005-06-20 21:15:16 -0700819 const char *devname);
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800820/* release interface */
821void gigaset_if_freedriver(struct gigaset_driver *drv);
822/* add minor */
823void gigaset_if_init(struct cardstate *cs);
824/* remove minor */
825void gigaset_if_free(struct cardstate *cs);
826/* device received data */
827void gigaset_if_receive(struct cardstate *cs,
Tilman Schmidt784d5852006-04-10 22:55:04 -0700828 unsigned char *buffer, size_t len);
Hansjoerg Lipp6fd5ea62006-03-26 01:38:29 -0800829
830#endif