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 /* int-in-events 3070 */
137 #define HD_B1_FLOW_CONTROL 0x80
138 #define HD_B2_FLOW_CONTROL 0x81
139 #define HD_RECEIVEATDATA_ACK (0x35) // 3070
140 // att: HD_RECEIVE>>AT<<DATA_ACK
141 #define HD_READY_SEND_ATDATA (0x36) // 3070
142 #define HD_OPEN_ATCHANNEL_ACK (0x37) // 3070
143 #define HD_CLOSE_ATCHANNEL_ACK (0x38) // 3070
144 #define HD_DEVICE_INIT_OK (0x11) // ISurf USB + 3070
145 #define HD_OPEN_B1CHANNEL_ACK (0x51) // ISurf USB + 3070
146 #define HD_OPEN_B2CHANNEL_ACK (0x52) // ISurf USB + 3070
147 #define HD_CLOSE_B1CHANNEL_ACK (0x53) // ISurf USB + 3070
148 #define HD_CLOSE_B2CHANNEL_ACK (0x54) // ISurf USB + 3070
150 #define HD_SUSPEND_END (0x61) // ISurf USB
152 #define HD_RESET_INTERRUPT_PIPE_ACK (0xFF) // ISurf USB + 3070
154 /* control requests 3070 */
155 #define HD_OPEN_B1CHANNEL (0x23) // ISurf USB + 3070
156 #define HD_CLOSE_B1CHANNEL (0x24) // ISurf USB + 3070
157 #define HD_OPEN_B2CHANNEL (0x25) // ISurf USB + 3070
158 #define HD_CLOSE_B2CHANNEL (0x26) // ISurf USB + 3070
159 #define HD_RESET_INTERRUPT_PIPE (0x27) // ISurf USB + 3070
160 #define HD_DEVICE_INIT_ACK (0x34) // ISurf USB + 3070
161 #define HD_WRITE_ATMESSAGE (0x12) // 3070
162 #define HD_READ_ATMESSAGE (0x13) // 3070
163 #define HD_OPEN_ATCHANNEL (0x28) // 3070
164 #define HD_CLOSE_ATCHANNEL (0x29) // 3070
166 /* number of B channels supported by base driver */
167 #define BAS_CHANNELS 2
169 /* USB frames for isochronous transfer */
170 #define BAS_FRAMETIME 1 /* number of milliseconds between frames */
171 #define BAS_NUMFRAMES 8 /* number of frames per URB */
172 #define BAS_MAXFRAME 16 /* allocated bytes per frame */
173 #define BAS_NORMFRAME 8 /* send size without flow control */
174 #define BAS_HIGHFRAME 10 /* " " with positive flow control */
175 #define BAS_LOWFRAME 5 /* " " with negative flow control */
176 #define BAS_CORRFRAMES 4 /* flow control multiplicator */
178 #define BAS_INBUFSIZE (BAS_MAXFRAME * BAS_NUMFRAMES)
179 /* size of isoc in buf per URB */
180 #define BAS_OUTBUFSIZE 4096 /* size of common isoc out buffer */
181 #define BAS_OUTBUFPAD BAS_MAXFRAME /* size of pad area for isoc out buf */
184 #define BAS_OUTURBS 3
186 /* variable commands in struct bc_state */
198 /* variables in struct at_state_t */
212 #define EV_TIMEOUT -105
213 #define EV_IF_VER -106
214 #define EV_PROC_CIDMODE -107
215 #define EV_SHUTDOWN -108
216 #define EV_START -110
218 #define EV_IF_LOCK -112
219 #define EV_ACCEPT -114
222 #define EV_BC_OPEN -117
223 #define EV_BC_CLOSED -118
226 #define INS_command 0x0001
227 #define INS_DLE_char 0x0002
228 #define INS_byte_stuff 0x0004
229 #define INS_have_data 0x0008
230 #define INS_skip_frame 0x0010
231 #define INS_DLE_command 0x0020
232 #define INS_flag_hunt 0x0040
235 #define CHS_D_UP 0x01
236 #define CHS_B_UP 0x02
237 #define CHS_NOTIFY_LL 0x04
239 #define ICALL_REJECT 0
240 #define ICALL_ACCEPT 1
241 #define ICALL_IGNORE 2
244 #define MS_UNINITIALIZED 0
247 #define MS_SHUTDOWN 3
259 #define SM_ISDN 1 /* default */
261 /* layer 2 protocols (AT^SBPR=...) */
267 struct gigaset_driver;
269 struct usb_cardstate;
270 struct ser_cardstate;
271 struct bas_cardstate;
279 int resp_code; /* RSP_XXXX */
280 int min_ConState; /* <0 => ignore */
281 int max_ConState; /* <0 => ignore */
282 int parameter; /* e.g. ZSAU_XXXX <0: ignore*/
283 int new_ConState; /* <0 => ignore */
284 int timeout; /* >0 => *HZ; <=0 => TOUT_XXXX*/
285 int action[MAXACT]; /* ACT_XXXX */
286 char *command; /* NULL==none */
289 extern struct reply_t gigaset_tab_cid[];
290 extern struct reply_t gigaset_tab_nocid[];
293 unsigned char *rcvbuf; /* usb-gigaset receive buffer */
294 struct bc_state *bcs;
295 struct cardstate *cs;
298 unsigned char data[RBUFSIZE];
301 /* isochronous write buffer structure
302 * circular buffer with pad area for extraction of complete USB frames
303 * - data[read..nextread-1] is valid data already submitted to the USB subsystem
304 * - data[nextread..write-1] is valid data yet to be sent
305 * - data[write] is the next byte to write to
306 * - in byte-oriented L2 procotols, it is completely free
307 * - in bit-oriented L2 procotols, it may contain a partial byte of valid data
308 * - data[write+1..read-1] is free
309 * - wbits is the number of valid data bits in data[write], starting at the LSB
310 * - writesem is the semaphore for writing to the buffer:
311 * if writesem <= 0, data[write..read-1] is currently being written to
312 * - idle contains the byte value to repeat when the end of valid data is
313 * reached; if nextread==write (buffer contains no data to send), either the
314 * BAS_OUTBUFPAD bytes immediately before data[write] (if
315 * write>=BAS_OUTBUFPAD) or those of the pad area (if write<BAS_OUTBUFPAD)
316 * are also filled with that value
324 unsigned char data[BAS_OUTBUFSIZE + BAS_OUTBUFPAD];
328 /* isochronous write URB context structure
329 * data to be stored along with the URB and retrieved when it is returned
330 * as completed by the USB subsystem
331 * - urb: pointer to the URB itself
332 * - bcs: pointer to the B Channel control structure
333 * - limit: end of write buffer area covered by this URB
334 * - status: URB completion status
336 struct isow_urbctx_t {
338 struct bc_state *bcs;
343 /* AT state structure
344 * data associated with the state of an ISDN connection, whether or not
345 * it is currently assigned a B channel
348 struct list_head list;
351 unsigned timer_index;
352 unsigned long timer_expires;
354 unsigned int ConState; /* State of connection */
355 struct reply_t *replystruct;
357 int int_var[VAR_NUM]; /* see VAR_XXXX */
358 char *str_var[STR_NUM]; /* see STR_XXXX */
359 unsigned pending_commands; /* see PC_XXXX */
362 struct cardstate *cs;
363 struct bc_state *bcs;
367 unsigned char *response;
368 int resp_code; /* RSP_XXXX */
369 int type; /* RT_XXXX */
377 struct at_state_t *at_state;
380 /* This buffer holds all information about the used B-Channel */
382 struct sk_buff *tx_skb; /* Current transfer buffer to modem */
383 struct sk_buff_head squeue; /* B-Channel send Queue */
385 /* Variables for debugging .. */
386 int corrupted; /* Counter for corrupted packages */
387 int trans_down; /* Counter of packages (downstream) */
388 int trans_up; /* Counter of packages (upstream) */
390 struct at_state_t at_state;
394 int inputstate; /* see INS_XXXX */
398 struct cardstate *cs;
400 unsigned chstate; /* bitmap (CHS_*) */
402 unsigned proto2; /* layer 2 protocol (L2_*) */
403 char *commands[AT_NUM]; /* see AT_XXXX */
405 #ifdef CONFIG_GIGASET_DEBUG
411 /* private data of hardware drivers */
413 struct ser_bc_state *ser; /* serial hardware driver */
414 struct usb_bc_state *usb; /* usb hardware driver (m105) */
415 struct bas_bc_state *bas; /* usb hardware driver (base) */
418 void *ap; /* LL application structure */
422 struct gigaset_driver *driver;
423 unsigned minor_index;
425 struct device *tty_dev;
428 const struct gigaset_ops *ops;
430 /* Stuff to handle communication */
431 wait_queue_head_t waitqueue;
433 int mode; /* see M_XXXX */
434 int mstate; /* Modem state: see MS_XXXX */
435 /* only changed by the event layer */
439 struct bc_state *bcs; /* Array of struct bc_state */
441 int onechannel; /* data and commands transmitted in one
445 struct at_state_t at_state; /* at_state_t for cid == 0 */
446 struct list_head temp_at_states;/* list of temporary "struct
447 at_state_t"s without B channel */
449 struct inbuf_t *inbuf;
451 struct cmdbuf_t *cmdbuf, *lastcmdbuf;
453 unsigned curlen, cmdbytes;
456 struct tty_struct *tty;
457 struct tasklet_struct if_wake_tasklet;
458 unsigned control_state;
463 unsigned running; /* !=0 if events are handled */
464 unsigned connected; /* !=0 if hardware is connected */
465 unsigned isdn_up; /* !=0 after gigaset_isdn_start() */
469 int myid; /* id for communication with LL */
470 void *iif; /* LL interface structure */
471 unsigned short hw_hdr_len; /* headroom needed in data skbs */
473 struct reply_t *tabnocid;
474 struct reply_t *tabcid;
476 int ignoreframes; /* frames to ignore after setting up the
478 struct mutex mutex; /* locks this structure:
479 * connected is not changed,
480 * hardware_up is not changed,
481 * MState is not changed to or from
484 struct timer_list timer;
486 int dle; /* !=0 if modem commands/responses are
488 int cur_at_seq; /* sequence of AT commands being
490 int curchannel; /* channel those commands are meant
492 int commands_pending; /* flag(s) in xxx.commands_pending have
494 struct tasklet_struct event_tasklet;
495 /* tasklet for serializing AT commands.
497 * -> for modem reponses (and
498 * incoming data for M10x)
500 * -> after setting bits in
501 * xxx.at_state.pending_command
502 * (e.g. command from LL) */
503 struct tasklet_struct write_tasklet;
504 /* tasklet for serial output
505 * (not used in base driver) */
508 struct event_t events[MAX_EVENTS];
509 unsigned ev_tail, ev_head;
512 /* current modem response */
513 unsigned char respdata[MAX_RESP_SIZE];
516 /* private data of hardware drivers */
518 struct usb_cardstate *usb; /* USB hardware driver (m105) */
519 struct ser_cardstate *ser; /* serial hardware driver */
520 struct bas_cardstate *bas; /* USB hardware driver (base) */
524 struct gigaset_driver {
525 struct list_head list;
526 spinlock_t lock; /* locks minor tables and blocked */
527 struct tty_driver *tty;
531 struct cardstate *cs;
534 const struct gigaset_ops *ops;
535 struct module *owner;
539 struct cmdbuf_t *next, *prev;
541 struct tasklet_struct *wake_tasklet;
542 unsigned char buf[0];
545 struct bas_bc_state {
546 /* isochronous output state */
549 spinlock_t isooutlock;
550 struct isow_urbctx_t isoouturbs[BAS_OUTURBS];
551 struct isow_urbctx_t *isooutdone, *isooutfree, *isooutovfl;
552 struct isowbuf_t *isooutbuf;
553 unsigned numsub; /* submitted URB counter
554 (for diagnostic messages only) */
555 struct tasklet_struct sent_tasklet;
557 /* isochronous input state */
558 spinlock_t isoinlock;
559 struct urb *isoinurbs[BAS_INURBS];
560 unsigned char isoinbuf[BAS_INBUFSIZE * BAS_INURBS];
561 struct urb *isoindone; /* completed isoc read URB */
562 int isoinstatus; /* status of completed URB */
563 int loststatus; /* status of dropped URB */
564 unsigned isoinlost; /* number of bytes lost */
565 /* state of bit unstuffing algorithm
566 (in addition to BC_state.inputstate) */
567 unsigned seqlen; /* number of '1' bits not yet
569 unsigned inbyte, inbits; /* collected bits for next byte */
571 unsigned goodbytes; /* bytes correctly received */
572 unsigned alignerrs; /* frames with incomplete byte at end */
573 unsigned fcserrs; /* FCS errors */
574 unsigned frameerrs; /* framing errors */
575 unsigned giants; /* long frames */
576 unsigned runts; /* short frames */
577 unsigned aborts; /* HDLC aborts */
578 unsigned shared0s; /* '0' bits shared between flags */
579 unsigned stolen0s; /* '0' stuff bits also serving as
581 struct tasklet_struct rcvd_tasklet;
585 /* Called from ev-layer.c/interface.c for sending AT commands to the
587 int (*write_cmd)(struct cardstate *cs,
588 const unsigned char *buf, int len,
589 struct tasklet_struct *wake_tasklet);
591 /* Called from interface.c for additional device control */
592 int (*write_room)(struct cardstate *cs);
593 int (*chars_in_buffer)(struct cardstate *cs);
594 int (*brkchars)(struct cardstate *cs, const unsigned char buf[6]);
596 /* Called from ev-layer.c after setting up connection
597 * Should call gigaset_bchannel_up(), when finished. */
598 int (*init_bchannel)(struct bc_state *bcs);
600 /* Called from ev-layer.c after hanging up
601 * Should call gigaset_bchannel_down(), when finished. */
602 int (*close_bchannel)(struct bc_state *bcs);
604 /* Called by gigaset_initcs() for setting up bcs->hw.xxx */
605 int (*initbcshw)(struct bc_state *bcs);
607 /* Called by gigaset_freecs() for freeing bcs->hw.xxx */
608 int (*freebcshw)(struct bc_state *bcs);
610 /* Called by gigaset_bchannel_down() for resetting bcs->hw.xxx */
611 void (*reinitbcshw)(struct bc_state *bcs);
613 /* Called by gigaset_initcs() for setting up cs->hw.xxx */
614 int (*initcshw)(struct cardstate *cs);
616 /* Called by gigaset_freecs() for freeing cs->hw.xxx */
617 void (*freecshw)(struct cardstate *cs);
619 /* Called from common.c/interface.c for additional serial port
621 int (*set_modem_ctrl)(struct cardstate *cs, unsigned old_state,
623 int (*baud_rate)(struct cardstate *cs, unsigned cflag);
624 int (*set_line_ctrl)(struct cardstate *cs, unsigned cflag);
626 /* Called from LL interface to put an skb into the send-queue.
627 * After sending is completed, gigaset_skb_sent() must be called
628 * with the first cs->hw_hdr_len bytes of skb->head preserved. */
629 int (*send_skb)(struct bc_state *bcs, struct sk_buff *skb);
631 /* Called from ev-layer.c to process a block of data
632 * received through the common/control channel. */
633 void (*handle_input)(struct inbuf_t *inbuf);
637 /* = Common structures and definitions ======================================= */
639 /* Parser states for DLE-Event:
640 * <DLE-EVENT>: <DLE_FLAG> "X" <EVENT> <DLE_FLAG> "."
642 * <EVENT>: ((a-z)* | (A-Z)* | (0-10)*)+
644 #define DLE_FLAG 0x10
646 /* ===========================================================================
647 * Functions implemented in asyncdata.c
650 /* Called from LL interface to put an skb into the send queue. */
651 int gigaset_m10x_send_skb(struct bc_state *bcs, struct sk_buff *skb);
653 /* Called from ev-layer.c to process a block of data
654 * received through the common/control channel. */
655 void gigaset_m10x_input(struct inbuf_t *inbuf);
657 /* ===========================================================================
658 * Functions implemented in isocdata.c
661 /* Called from LL interface to put an skb into the send queue. */
662 int gigaset_isoc_send_skb(struct bc_state *bcs, struct sk_buff *skb);
664 /* Called from ev-layer.c to process a block of data
665 * received through the common/control channel. */
666 void gigaset_isoc_input(struct inbuf_t *inbuf);
668 /* Called from bas-gigaset.c to process a block of data
669 * received through the isochronous channel */
670 void gigaset_isoc_receive(unsigned char *src, unsigned count,
671 struct bc_state *bcs);
673 /* Called from bas-gigaset.c to put a block of data
674 * into the isochronous output buffer */
675 int gigaset_isoc_buildframe(struct bc_state *bcs, unsigned char *in, int len);
677 /* Called from bas-gigaset.c to initialize the isochronous output buffer */
678 void gigaset_isowbuf_init(struct isowbuf_t *iwb, unsigned char idle);
680 /* Called from bas-gigaset.c to retrieve a block of bytes for sending */
681 int gigaset_isowbuf_getbytes(struct isowbuf_t *iwb, int size);
683 /* ===========================================================================
684 * Functions implemented in LL interface
687 /* Called from common.c for setting up/shutting down with the ISDN subsystem */
688 int gigaset_isdn_register(struct cardstate *cs, const char *isdnid);
689 void gigaset_isdn_unregister(struct cardstate *cs);
691 /* Called from hardware module to indicate completion of an skb */
692 void gigaset_skb_sent(struct bc_state *bcs, struct sk_buff *skb);
693 void gigaset_skb_rcvd(struct bc_state *bcs, struct sk_buff *skb);
694 void gigaset_isdn_rcv_err(struct bc_state *bcs);
696 /* Called from common.c/ev-layer.c to indicate events relevant to the LL */
697 void gigaset_isdn_start(struct cardstate *cs);
698 void gigaset_isdn_stop(struct cardstate *cs);
699 int gigaset_isdn_icall(struct at_state_t *at_state);
700 void gigaset_isdn_connD(struct bc_state *bcs);
701 void gigaset_isdn_hupD(struct bc_state *bcs);
702 void gigaset_isdn_connB(struct bc_state *bcs);
703 void gigaset_isdn_hupB(struct bc_state *bcs);
705 /* ===========================================================================
706 * Functions implemented in ev-layer.c
709 /* tasklet called from common.c to process queued events */
710 void gigaset_handle_event(unsigned long data);
712 /* called from isocdata.c / asyncdata.c
713 * when a complete modem response line has been received */
714 void gigaset_handle_modem_response(struct cardstate *cs);
716 /* ===========================================================================
717 * Functions implemented in proc.c
720 /* initialize sysfs for device */
721 void gigaset_init_dev_sysfs(struct cardstate *cs);
722 void gigaset_free_dev_sysfs(struct cardstate *cs);
724 /* ===========================================================================
725 * Functions implemented in common.c/gigaset.h
728 void gigaset_bcs_reinit(struct bc_state *bcs);
729 void gigaset_at_init(struct at_state_t *at_state, struct bc_state *bcs,
730 struct cardstate *cs, int cid);
731 int gigaset_get_channel(struct bc_state *bcs);
732 struct bc_state *gigaset_get_free_channel(struct cardstate *cs);
733 void gigaset_free_channel(struct bc_state *bcs);
734 int gigaset_get_channels(struct cardstate *cs);
735 void gigaset_free_channels(struct cardstate *cs);
736 void gigaset_block_channels(struct cardstate *cs);
738 /* Allocate and initialize driver structure. */
739 struct gigaset_driver *gigaset_initdriver(unsigned minor, unsigned minors,
740 const char *procname,
742 const struct gigaset_ops *ops,
743 struct module *owner);
745 /* Deallocate driver structure. */
746 void gigaset_freedriver(struct gigaset_driver *drv);
747 void gigaset_debugdrivers(void);
748 struct cardstate *gigaset_get_cs_by_tty(struct tty_struct *tty);
749 struct cardstate *gigaset_get_cs_by_id(int id);
750 void gigaset_blockdriver(struct gigaset_driver *drv);
752 /* Allocate and initialize card state. Calls hardware dependent
753 gigaset_init[b]cs(). */
754 struct cardstate *gigaset_initcs(struct gigaset_driver *drv, int channels,
755 int onechannel, int ignoreframes,
756 int cidmode, const char *modulename);
758 /* Free card state. Calls hardware dependent gigaset_free[b]cs(). */
759 void gigaset_freecs(struct cardstate *cs);
761 /* Tell common.c that hardware and driver are ready. */
762 int gigaset_start(struct cardstate *cs);
764 /* Tell common.c that the device is not present any more. */
765 void gigaset_stop(struct cardstate *cs);
767 /* Tell common.c that the driver is being unloaded. */
768 int gigaset_shutdown(struct cardstate *cs);
770 /* Tell common.c that an skb has been sent. */
771 void gigaset_skb_sent(struct bc_state *bcs, struct sk_buff *skb);
773 /* Append event to the queue.
774 * Returns NULL on failure or a pointer to the event on success.
775 * ptr must be kmalloc()ed (and not be freed by the caller).
777 struct event_t *gigaset_add_event(struct cardstate *cs,
778 struct at_state_t *at_state, int type,
779 void *ptr, int parameter, void *arg);
781 /* Called on CONFIG1 command from frontend. */
782 int gigaset_enterconfigmode(struct cardstate *cs); //0: success <0: errorcode
784 /* cs->lock must not be locked */
785 static inline void gigaset_schedule_event(struct cardstate *cs)
788 spin_lock_irqsave(&cs->lock, flags);
790 tasklet_schedule(&cs->event_tasklet);
791 spin_unlock_irqrestore(&cs->lock, flags);
794 /* Tell common.c that B channel has been closed. */
795 /* cs->lock must not be locked */
796 static inline void gigaset_bchannel_down(struct bc_state *bcs)
798 gigaset_add_event(bcs->cs, &bcs->at_state, EV_BC_CLOSED, NULL, 0, NULL);
800 gig_dbg(DEBUG_CMD, "scheduling BC_CLOSED");
801 gigaset_schedule_event(bcs->cs);
804 /* Tell common.c that B channel has been opened. */
805 /* cs->lock must not be locked */
806 static inline void gigaset_bchannel_up(struct bc_state *bcs)
808 gigaset_add_event(bcs->cs, &bcs->at_state, EV_BC_OPEN, NULL, 0, NULL);
810 gig_dbg(DEBUG_CMD, "scheduling BC_OPEN");
811 gigaset_schedule_event(bcs->cs);
814 /* handling routines for sk_buff */
815 /* ============================= */
817 /* append received bytes to inbuf */
818 int gigaset_fill_inbuf(struct inbuf_t *inbuf, const unsigned char *src,
821 /* ===========================================================================
822 * Functions implemented in interface.c
825 /* initialize interface */
826 void gigaset_if_initdriver(struct gigaset_driver *drv, const char *procname,
827 const char *devname);
828 /* release interface */
829 void gigaset_if_freedriver(struct gigaset_driver *drv);
831 void gigaset_if_init(struct cardstate *cs);
833 void gigaset_if_free(struct cardstate *cs);
834 /* device received data */
835 void gigaset_if_receive(struct cardstate *cs,
836 unsigned char *buffer, size_t len);