2 * Siemens Gigaset 307x driver
3 * Common header file for all connection variants
5 * Written by Stefan Eilers
6 * and Hansjoerg Lipp <hjlipp@web.de>
8 * =====================================================================
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 * =====================================================================
19 /* define global prefix for pr_ macros in linux/kernel.h */
20 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
22 #include <linux/kernel.h>
23 #include <linux/compiler.h>
24 #include <linux/types.h>
25 #include <linux/spinlock.h>
26 #include <linux/usb.h>
27 #include <linux/skbuff.h>
28 #include <linux/netdevice.h>
29 #include <linux/ppp_defs.h>
30 #include <linux/timer.h>
31 #include <linux/interrupt.h>
32 #include <linux/tty.h>
33 #include <linux/tty_driver.h>
34 #include <linux/list.h>
35 #include <asm/atomic.h>
37 #define GIG_VERSION {0, 5, 0, 0}
38 #define GIG_COMPAT {0, 4, 0, 0}
40 #define MAX_REC_PARAMS 10 /* Max. number of params in response string */
41 #define MAX_RESP_SIZE 512 /* Max. size of a response string */
43 #define MAX_EVENTS 64 /* size of event queue */
46 #define SBUFSIZE 4096 /* sk_buff payload size */
48 #define TRANSBUFSIZE 768 /* bytes per skb for transparent receive */
49 #define MAX_BUF_SIZE (SBUFSIZE - 2) /* Max. size of a data packet from LL */
51 /* compile time options */
54 #define GIG_MAYINITONDIAL
58 #define GIG_TICK 100 /* in milliseconds */
60 /* timeout values (unit: 1 sec) */
61 #define INIT_TIMEOUT 1
63 /* timeout values (unit: 0.1 sec) */
64 #define RING_TIMEOUT 3 /* for additional parameters to RING */
65 #define BAS_TIMEOUT 20 /* for response to Base USB ops */
66 #define ATRDY_TIMEOUT 3 /* for HD_READY_SEND_ATDATA */
68 #define BAS_RETRY 3 /* max. retries for base USB ops */
72 extern int gigaset_debuglevel; /* "needs" cast to (enum debuglevel) */
74 /* debug flags, combine by adding/bitwise OR */
76 DEBUG_INTR = 0x00008, /* interrupt processing */
77 DEBUG_CMD = 0x00020, /* sent/received LL commands */
78 DEBUG_STREAM = 0x00040, /* application data stream I/O events */
79 DEBUG_STREAM_DUMP = 0x00080, /* application data stream content */
80 DEBUG_LLDATA = 0x00100, /* sent/received LL data */
81 DEBUG_DRIVER = 0x00400, /* driver structure */
82 DEBUG_HDLC = 0x00800, /* M10x HDLC processing */
83 DEBUG_WRITE = 0x01000, /* M105 data write */
84 DEBUG_TRANSCMD = 0x02000, /* AT-COMMANDS+RESPONSES */
85 DEBUG_MCMD = 0x04000, /* COMMANDS THAT ARE SENT VERY OFTEN */
86 DEBUG_INIT = 0x08000, /* (de)allocation+initialization of data
88 DEBUG_SUSPEND = 0x10000, /* suspend/resume processing */
89 DEBUG_OUTPUT = 0x20000, /* output to device */
90 DEBUG_ISO = 0x40000, /* isochronous transfers */
91 DEBUG_IF = 0x80000, /* character device operations */
92 DEBUG_USBREQ = 0x100000, /* USB communication (except payload
94 DEBUG_LOCKCMD = 0x200000, /* AT commands and responses when
97 DEBUG_ANY = 0x3fffff, /* print message if any of the others is
101 #ifdef CONFIG_GIGASET_DEBUG
103 #define gig_dbg(level, format, arg...) \
105 if (unlikely(((enum debuglevel)gigaset_debuglevel) & (level))) \
106 printk(KERN_DEBUG KBUILD_MODNAME ": " format "\n", \
109 #define DEBUG_DEFAULT (DEBUG_TRANSCMD | DEBUG_CMD | DEBUG_USBREQ)
113 #define gig_dbg(level, format, arg...) do {} while (0)
114 #define DEBUG_DEFAULT 0
118 void gigaset_dbg_buffer(enum debuglevel level, const unsigned char *msg,
119 size_t len, const unsigned char *buf);
121 /* connection state */
123 #define ZSAU_DISCONNECT_IND 4
124 #define ZSAU_OUTGOING_CALL_PROCEEDING 1
125 #define ZSAU_PROCEEDING 1
126 #define ZSAU_CALL_DELIVERED 2
127 #define ZSAU_ACTIVE 3
129 #define ZSAU_DISCONNECT_REQ 6
130 #define ZSAU_UNKNOWN -1
132 /* USB control transfer requests */
133 #define OUT_VENDOR_REQ (USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT)
134 #define IN_VENDOR_REQ (USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT)
136 /* interrupt pipe messages */
137 #define HD_B1_FLOW_CONTROL 0x80
138 #define HD_B2_FLOW_CONTROL 0x81
139 #define HD_RECEIVEATDATA_ACK (0x35) /* 3070 */
140 #define HD_READY_SEND_ATDATA (0x36) /* 3070 */
141 #define HD_OPEN_ATCHANNEL_ACK (0x37) /* 3070 */
142 #define HD_CLOSE_ATCHANNEL_ACK (0x38) /* 3070 */
143 #define HD_DEVICE_INIT_OK (0x11) /* ISurf USB + 3070 */
144 #define HD_OPEN_B1CHANNEL_ACK (0x51) /* ISurf USB + 3070 */
145 #define HD_OPEN_B2CHANNEL_ACK (0x52) /* ISurf USB + 3070 */
146 #define HD_CLOSE_B1CHANNEL_ACK (0x53) /* ISurf USB + 3070 */
147 #define HD_CLOSE_B2CHANNEL_ACK (0x54) /* ISurf USB + 3070 */
148 #define HD_SUSPEND_END (0x61) /* ISurf USB */
149 #define HD_RESET_INTERRUPT_PIPE_ACK (0xFF) /* ISurf USB + 3070 */
151 /* control requests */
152 #define HD_OPEN_B1CHANNEL (0x23) /* ISurf USB + 3070 */
153 #define HD_CLOSE_B1CHANNEL (0x24) /* ISurf USB + 3070 */
154 #define HD_OPEN_B2CHANNEL (0x25) /* ISurf USB + 3070 */
155 #define HD_CLOSE_B2CHANNEL (0x26) /* ISurf USB + 3070 */
156 #define HD_RESET_INTERRUPT_PIPE (0x27) /* ISurf USB + 3070 */
157 #define HD_DEVICE_INIT_ACK (0x34) /* ISurf USB + 3070 */
158 #define HD_WRITE_ATMESSAGE (0x12) /* 3070 */
159 #define HD_READ_ATMESSAGE (0x13) /* 3070 */
160 #define HD_OPEN_ATCHANNEL (0x28) /* 3070 */
161 #define HD_CLOSE_ATCHANNEL (0x29) /* 3070 */
163 /* number of B channels supported by base driver */
164 #define BAS_CHANNELS 2
166 /* USB frames for isochronous transfer */
167 #define BAS_FRAMETIME 1 /* number of milliseconds between frames */
168 #define BAS_NUMFRAMES 8 /* number of frames per URB */
169 #define BAS_MAXFRAME 16 /* allocated bytes per frame */
170 #define BAS_NORMFRAME 8 /* send size without flow control */
171 #define BAS_HIGHFRAME 10 /* " " with positive flow control */
172 #define BAS_LOWFRAME 5 /* " " with negative flow control */
173 #define BAS_CORRFRAMES 4 /* flow control multiplicator */
175 #define BAS_INBUFSIZE (BAS_MAXFRAME * BAS_NUMFRAMES)
176 /* size of isoc in buf per URB */
177 #define BAS_OUTBUFSIZE 4096 /* size of common isoc out buffer */
178 #define BAS_OUTBUFPAD BAS_MAXFRAME /* size of pad area for isoc out buf */
181 #define BAS_OUTURBS 3
183 /* variable commands in struct bc_state */
195 /* variables in struct at_state_t */
209 #define EV_TIMEOUT -105
210 #define EV_IF_VER -106
211 #define EV_PROC_CIDMODE -107
212 #define EV_SHUTDOWN -108
213 #define EV_START -110
215 #define EV_IF_LOCK -112
216 #define EV_ACCEPT -114
219 #define EV_BC_OPEN -117
220 #define EV_BC_CLOSED -118
223 #define INS_command 0x0001 /* receiving messages (not payload data) */
224 #define INS_DLE_char 0x0002 /* DLE flag received (in DLE mode) */
225 #define INS_byte_stuff 0x0004
226 #define INS_have_data 0x0008
227 #define INS_DLE_command 0x0020 /* DLE message start (<DLE> X) received */
228 #define INS_flag_hunt 0x0040
231 #define CHS_D_UP 0x01
232 #define CHS_B_UP 0x02
233 #define CHS_NOTIFY_LL 0x04
235 #define ICALL_REJECT 0
236 #define ICALL_ACCEPT 1
237 #define ICALL_IGNORE 2
240 #define MS_UNINITIALIZED 0
243 #define MS_SHUTDOWN 3
255 #define SM_ISDN 1 /* default */
257 /* layer 2 protocols (AT^SBPR=...) */
263 struct gigaset_driver;
265 struct usb_cardstate;
266 struct ser_cardstate;
267 struct bas_cardstate;
275 int resp_code; /* RSP_XXXX */
276 int min_ConState; /* <0 => ignore */
277 int max_ConState; /* <0 => ignore */
278 int parameter; /* e.g. ZSAU_XXXX <0: ignore*/
279 int new_ConState; /* <0 => ignore */
280 int timeout; /* >0 => *HZ; <=0 => TOUT_XXXX*/
281 int action[MAXACT]; /* ACT_XXXX */
282 char *command; /* NULL==none */
285 extern struct reply_t gigaset_tab_cid[];
286 extern struct reply_t gigaset_tab_nocid[];
289 struct cardstate *cs;
292 unsigned char data[RBUFSIZE];
295 /* isochronous write buffer structure
296 * circular buffer with pad area for extraction of complete USB frames
297 * - data[read..nextread-1] is valid data already submitted to the USB subsystem
298 * - data[nextread..write-1] is valid data yet to be sent
299 * - data[write] is the next byte to write to
300 * - in byte-oriented L2 procotols, it is completely free
301 * - in bit-oriented L2 procotols, it may contain a partial byte of valid data
302 * - data[write+1..read-1] is free
303 * - wbits is the number of valid data bits in data[write], starting at the LSB
304 * - writesem is the semaphore for writing to the buffer:
305 * if writesem <= 0, data[write..read-1] is currently being written to
306 * - idle contains the byte value to repeat when the end of valid data is
307 * reached; if nextread==write (buffer contains no data to send), either the
308 * BAS_OUTBUFPAD bytes immediately before data[write] (if
309 * write>=BAS_OUTBUFPAD) or those of the pad area (if write<BAS_OUTBUFPAD)
310 * are also filled with that value
318 unsigned char data[BAS_OUTBUFSIZE + BAS_OUTBUFPAD];
322 /* isochronous write URB context structure
323 * data to be stored along with the URB and retrieved when it is returned
324 * as completed by the USB subsystem
325 * - urb: pointer to the URB itself
326 * - bcs: pointer to the B Channel control structure
327 * - limit: end of write buffer area covered by this URB
328 * - status: URB completion status
330 struct isow_urbctx_t {
332 struct bc_state *bcs;
337 /* AT state structure
338 * data associated with the state of an ISDN connection, whether or not
339 * it is currently assigned a B channel
342 struct list_head list;
345 unsigned timer_index;
346 unsigned long timer_expires;
348 unsigned int ConState; /* State of connection */
349 struct reply_t *replystruct;
351 int int_var[VAR_NUM]; /* see VAR_XXXX */
352 char *str_var[STR_NUM]; /* see STR_XXXX */
353 unsigned pending_commands; /* see PC_XXXX */
356 struct cardstate *cs;
357 struct bc_state *bcs;
361 unsigned char *response;
362 int resp_code; /* RSP_XXXX */
363 int type; /* RT_XXXX */
371 struct at_state_t *at_state;
374 /* This buffer holds all information about the used B-Channel */
376 struct sk_buff *tx_skb; /* Current transfer buffer to modem */
377 struct sk_buff_head squeue; /* B-Channel send Queue */
379 /* Variables for debugging .. */
380 int corrupted; /* Counter for corrupted packages */
381 int trans_down; /* Counter of packages (downstream) */
382 int trans_up; /* Counter of packages (upstream) */
384 struct at_state_t at_state;
388 int inputstate; /* see INS_XXXX */
392 struct cardstate *cs;
394 unsigned chstate; /* bitmap (CHS_*) */
396 unsigned proto2; /* layer 2 protocol (L2_*) */
397 char *commands[AT_NUM]; /* see AT_XXXX */
399 #ifdef CONFIG_GIGASET_DEBUG
405 /* private data of hardware drivers */
407 struct ser_bc_state *ser; /* serial hardware driver */
408 struct usb_bc_state *usb; /* usb hardware driver (m105) */
409 struct bas_bc_state *bas; /* usb hardware driver (base) */
412 void *ap; /* LL application structure */
416 struct gigaset_driver *driver;
417 unsigned minor_index;
419 struct device *tty_dev;
422 const struct gigaset_ops *ops;
424 /* Stuff to handle communication */
425 wait_queue_head_t waitqueue;
427 int mode; /* see M_XXXX */
428 int mstate; /* Modem state: see MS_XXXX */
429 /* only changed by the event layer */
433 struct bc_state *bcs; /* Array of struct bc_state */
435 int onechannel; /* data and commands transmitted in one
439 struct at_state_t at_state; /* at_state_t for cid == 0 */
440 struct list_head temp_at_states;/* list of temporary "struct
441 at_state_t"s without B channel */
443 struct inbuf_t *inbuf;
445 struct cmdbuf_t *cmdbuf, *lastcmdbuf;
447 unsigned curlen, cmdbytes;
450 struct tty_struct *tty;
451 struct tasklet_struct if_wake_tasklet;
452 unsigned control_state;
457 unsigned running; /* !=0 if events are handled */
458 unsigned connected; /* !=0 if hardware is connected */
459 unsigned isdn_up; /* !=0 after gigaset_isdn_start() */
463 int myid; /* id for communication with LL */
464 void *iif; /* LL interface structure */
465 unsigned short hw_hdr_len; /* headroom needed in data skbs */
467 struct reply_t *tabnocid;
468 struct reply_t *tabcid;
470 int ignoreframes; /* frames to ignore after setting up the
472 struct mutex mutex; /* locks this structure:
473 * connected is not changed,
474 * hardware_up is not changed,
475 * MState is not changed to or from
478 struct timer_list timer;
480 int dle; /* !=0 if DLE mode is active
481 (ZDLE=1 received -- M10x only) */
482 int cur_at_seq; /* sequence of AT commands being
484 int curchannel; /* channel those commands are meant
486 int commands_pending; /* flag(s) in xxx.commands_pending have
488 struct tasklet_struct event_tasklet;
489 /* tasklet for serializing AT commands.
491 * -> for modem reponses (and
492 * incoming data for M10x)
494 * -> after setting bits in
495 * xxx.at_state.pending_command
496 * (e.g. command from LL) */
497 struct tasklet_struct write_tasklet;
498 /* tasklet for serial output
499 * (not used in base driver) */
502 struct event_t events[MAX_EVENTS];
503 unsigned ev_tail, ev_head;
506 /* current modem response */
507 unsigned char respdata[MAX_RESP_SIZE];
510 /* private data of hardware drivers */
512 struct usb_cardstate *usb; /* USB hardware driver (m105) */
513 struct ser_cardstate *ser; /* serial hardware driver */
514 struct bas_cardstate *bas; /* USB hardware driver (base) */
518 struct gigaset_driver {
519 struct list_head list;
520 spinlock_t lock; /* locks minor tables and blocked */
521 struct tty_driver *tty;
525 struct cardstate *cs;
528 const struct gigaset_ops *ops;
529 struct module *owner;
533 struct cmdbuf_t *next, *prev;
535 struct tasklet_struct *wake_tasklet;
536 unsigned char buf[0];
539 struct bas_bc_state {
540 /* isochronous output state */
543 spinlock_t isooutlock;
544 struct isow_urbctx_t isoouturbs[BAS_OUTURBS];
545 struct isow_urbctx_t *isooutdone, *isooutfree, *isooutovfl;
546 struct isowbuf_t *isooutbuf;
547 unsigned numsub; /* submitted URB counter
548 (for diagnostic messages only) */
549 struct tasklet_struct sent_tasklet;
551 /* isochronous input state */
552 spinlock_t isoinlock;
553 struct urb *isoinurbs[BAS_INURBS];
554 unsigned char isoinbuf[BAS_INBUFSIZE * BAS_INURBS];
555 struct urb *isoindone; /* completed isoc read URB */
556 int isoinstatus; /* status of completed URB */
557 int loststatus; /* status of dropped URB */
558 unsigned isoinlost; /* number of bytes lost */
559 /* state of bit unstuffing algorithm
560 (in addition to BC_state.inputstate) */
561 unsigned seqlen; /* number of '1' bits not yet
563 unsigned inbyte, inbits; /* collected bits for next byte */
565 unsigned goodbytes; /* bytes correctly received */
566 unsigned alignerrs; /* frames with incomplete byte at end */
567 unsigned fcserrs; /* FCS errors */
568 unsigned frameerrs; /* framing errors */
569 unsigned giants; /* long frames */
570 unsigned runts; /* short frames */
571 unsigned aborts; /* HDLC aborts */
572 unsigned shared0s; /* '0' bits shared between flags */
573 unsigned stolen0s; /* '0' stuff bits also serving as
575 struct tasklet_struct rcvd_tasklet;
579 /* Called from ev-layer.c/interface.c for sending AT commands to the
581 int (*write_cmd)(struct cardstate *cs,
582 const unsigned char *buf, int len,
583 struct tasklet_struct *wake_tasklet);
585 /* Called from interface.c for additional device control */
586 int (*write_room)(struct cardstate *cs);
587 int (*chars_in_buffer)(struct cardstate *cs);
588 int (*brkchars)(struct cardstate *cs, const unsigned char buf[6]);
590 /* Called from ev-layer.c after setting up connection
591 * Should call gigaset_bchannel_up(), when finished. */
592 int (*init_bchannel)(struct bc_state *bcs);
594 /* Called from ev-layer.c after hanging up
595 * Should call gigaset_bchannel_down(), when finished. */
596 int (*close_bchannel)(struct bc_state *bcs);
598 /* Called by gigaset_initcs() for setting up bcs->hw.xxx */
599 int (*initbcshw)(struct bc_state *bcs);
601 /* Called by gigaset_freecs() for freeing bcs->hw.xxx */
602 int (*freebcshw)(struct bc_state *bcs);
604 /* Called by gigaset_bchannel_down() for resetting bcs->hw.xxx */
605 void (*reinitbcshw)(struct bc_state *bcs);
607 /* Called by gigaset_initcs() for setting up cs->hw.xxx */
608 int (*initcshw)(struct cardstate *cs);
610 /* Called by gigaset_freecs() for freeing cs->hw.xxx */
611 void (*freecshw)(struct cardstate *cs);
613 /* Called from common.c/interface.c for additional serial port
615 int (*set_modem_ctrl)(struct cardstate *cs, unsigned old_state,
617 int (*baud_rate)(struct cardstate *cs, unsigned cflag);
618 int (*set_line_ctrl)(struct cardstate *cs, unsigned cflag);
620 /* Called from LL interface to put an skb into the send-queue.
621 * After sending is completed, gigaset_skb_sent() must be called
622 * with the skb's link layer header preserved. */
623 int (*send_skb)(struct bc_state *bcs, struct sk_buff *skb);
625 /* Called from ev-layer.c to process a block of data
626 * received through the common/control channel. */
627 void (*handle_input)(struct inbuf_t *inbuf);
631 /* = Common structures and definitions =======================================
634 /* Parser states for DLE-Event:
635 * <DLE-EVENT>: <DLE_FLAG> "X" <EVENT> <DLE_FLAG> "."
637 * <EVENT>: ((a-z)* | (A-Z)* | (0-10)*)+
639 #define DLE_FLAG 0x10
641 /* ===========================================================================
642 * Functions implemented in asyncdata.c
645 /* Called from LL interface to put an skb into the send queue. */
646 int gigaset_m10x_send_skb(struct bc_state *bcs, struct sk_buff *skb);
648 /* Called from ev-layer.c to process a block of data
649 * received through the common/control channel. */
650 void gigaset_m10x_input(struct inbuf_t *inbuf);
652 /* ===========================================================================
653 * Functions implemented in isocdata.c
656 /* Called from LL interface to put an skb into the send queue. */
657 int gigaset_isoc_send_skb(struct bc_state *bcs, struct sk_buff *skb);
659 /* Called from ev-layer.c to process a block of data
660 * received through the common/control channel. */
661 void gigaset_isoc_input(struct inbuf_t *inbuf);
663 /* Called from bas-gigaset.c to process a block of data
664 * received through the isochronous channel */
665 void gigaset_isoc_receive(unsigned char *src, unsigned count,
666 struct bc_state *bcs);
668 /* Called from bas-gigaset.c to put a block of data
669 * into the isochronous output buffer */
670 int gigaset_isoc_buildframe(struct bc_state *bcs, unsigned char *in, int len);
672 /* Called from bas-gigaset.c to initialize the isochronous output buffer */
673 void gigaset_isowbuf_init(struct isowbuf_t *iwb, unsigned char idle);
675 /* Called from bas-gigaset.c to retrieve a block of bytes for sending */
676 int gigaset_isowbuf_getbytes(struct isowbuf_t *iwb, int size);
678 /* ===========================================================================
679 * Functions implemented in LL interface
682 /* Called from common.c for setting up/shutting down with the ISDN subsystem */
683 int gigaset_isdn_register(struct cardstate *cs, const char *isdnid);
684 void gigaset_isdn_unregister(struct cardstate *cs);
686 /* Called from hardware module to indicate completion of an skb */
687 void gigaset_skb_sent(struct bc_state *bcs, struct sk_buff *skb);
688 void gigaset_skb_rcvd(struct bc_state *bcs, struct sk_buff *skb);
689 void gigaset_isdn_rcv_err(struct bc_state *bcs);
691 /* Called from common.c/ev-layer.c to indicate events relevant to the LL */
692 void gigaset_isdn_start(struct cardstate *cs);
693 void gigaset_isdn_stop(struct cardstate *cs);
694 int gigaset_isdn_icall(struct at_state_t *at_state);
695 void gigaset_isdn_connD(struct bc_state *bcs);
696 void gigaset_isdn_hupD(struct bc_state *bcs);
697 void gigaset_isdn_connB(struct bc_state *bcs);
698 void gigaset_isdn_hupB(struct bc_state *bcs);
700 /* ===========================================================================
701 * Functions implemented in ev-layer.c
704 /* tasklet called from common.c to process queued events */
705 void gigaset_handle_event(unsigned long data);
707 /* called from isocdata.c / asyncdata.c
708 * when a complete modem response line has been received */
709 void gigaset_handle_modem_response(struct cardstate *cs);
711 /* ===========================================================================
712 * Functions implemented in proc.c
715 /* initialize sysfs for device */
716 void gigaset_init_dev_sysfs(struct cardstate *cs);
717 void gigaset_free_dev_sysfs(struct cardstate *cs);
719 /* ===========================================================================
720 * Functions implemented in common.c/gigaset.h
723 void gigaset_bcs_reinit(struct bc_state *bcs);
724 void gigaset_at_init(struct at_state_t *at_state, struct bc_state *bcs,
725 struct cardstate *cs, int cid);
726 int gigaset_get_channel(struct bc_state *bcs);
727 struct bc_state *gigaset_get_free_channel(struct cardstate *cs);
728 void gigaset_free_channel(struct bc_state *bcs);
729 int gigaset_get_channels(struct cardstate *cs);
730 void gigaset_free_channels(struct cardstate *cs);
731 void gigaset_block_channels(struct cardstate *cs);
733 /* Allocate and initialize driver structure. */
734 struct gigaset_driver *gigaset_initdriver(unsigned minor, unsigned minors,
735 const char *procname,
737 const struct gigaset_ops *ops,
738 struct module *owner);
740 /* Deallocate driver structure. */
741 void gigaset_freedriver(struct gigaset_driver *drv);
742 void gigaset_debugdrivers(void);
743 struct cardstate *gigaset_get_cs_by_tty(struct tty_struct *tty);
744 struct cardstate *gigaset_get_cs_by_id(int id);
745 void gigaset_blockdriver(struct gigaset_driver *drv);
747 /* Allocate and initialize card state. Calls hardware dependent
748 gigaset_init[b]cs(). */
749 struct cardstate *gigaset_initcs(struct gigaset_driver *drv, int channels,
750 int onechannel, int ignoreframes,
751 int cidmode, const char *modulename);
753 /* Free card state. Calls hardware dependent gigaset_free[b]cs(). */
754 void gigaset_freecs(struct cardstate *cs);
756 /* Tell common.c that hardware and driver are ready. */
757 int gigaset_start(struct cardstate *cs);
759 /* Tell common.c that the device is not present any more. */
760 void gigaset_stop(struct cardstate *cs);
762 /* Tell common.c that the driver is being unloaded. */
763 int gigaset_shutdown(struct cardstate *cs);
765 /* Tell common.c that an skb has been sent. */
766 void gigaset_skb_sent(struct bc_state *bcs, struct sk_buff *skb);
768 /* Append event to the queue.
769 * Returns NULL on failure or a pointer to the event on success.
770 * ptr must be kmalloc()ed (and not be freed by the caller).
772 struct event_t *gigaset_add_event(struct cardstate *cs,
773 struct at_state_t *at_state, int type,
774 void *ptr, int parameter, void *arg);
776 /* Called on CONFIG1 command from frontend. */
777 int gigaset_enterconfigmode(struct cardstate *cs);
779 /* cs->lock must not be locked */
780 static inline void gigaset_schedule_event(struct cardstate *cs)
783 spin_lock_irqsave(&cs->lock, flags);
785 tasklet_schedule(&cs->event_tasklet);
786 spin_unlock_irqrestore(&cs->lock, flags);
789 /* Tell common.c that B channel has been closed. */
790 /* cs->lock must not be locked */
791 static inline void gigaset_bchannel_down(struct bc_state *bcs)
793 gigaset_add_event(bcs->cs, &bcs->at_state, EV_BC_CLOSED, NULL, 0, NULL);
795 gig_dbg(DEBUG_CMD, "scheduling BC_CLOSED");
796 gigaset_schedule_event(bcs->cs);
799 /* Tell common.c that B channel has been opened. */
800 /* cs->lock must not be locked */
801 static inline void gigaset_bchannel_up(struct bc_state *bcs)
803 gigaset_add_event(bcs->cs, &bcs->at_state, EV_BC_OPEN, NULL, 0, NULL);
805 gig_dbg(DEBUG_CMD, "scheduling BC_OPEN");
806 gigaset_schedule_event(bcs->cs);
809 /* handling routines for sk_buff */
810 /* ============================= */
812 /* append received bytes to inbuf */
813 int gigaset_fill_inbuf(struct inbuf_t *inbuf, const unsigned char *src,
816 /* ===========================================================================
817 * Functions implemented in interface.c
820 /* initialize interface */
821 void gigaset_if_initdriver(struct gigaset_driver *drv, const char *procname,
822 const char *devname);
823 /* release interface */
824 void gigaset_if_freedriver(struct gigaset_driver *drv);
826 void gigaset_if_init(struct cardstate *cs);
828 void gigaset_if_free(struct cardstate *cs);
829 /* device received data */
830 void gigaset_if_receive(struct cardstate *cs,
831 unsigned char *buffer, size_t len);