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/isdnif.h>
27 #include <linux/usb.h>
28 #include <linux/skbuff.h>
29 #include <linux/netdevice.h>
30 #include <linux/ppp_defs.h>
31 #include <linux/timer.h>
32 #include <linux/interrupt.h>
33 #include <linux/tty.h>
34 #include <linux/tty_driver.h>
35 #include <linux/list.h>
36 #include <asm/atomic.h>
38 #define GIG_VERSION {0,5,0,0}
39 #define GIG_COMPAT {0,4,0,0}
41 #define MAX_REC_PARAMS 10 /* Max. number of params in response string */
42 #define MAX_RESP_SIZE 512 /* Max. size of a response string */
43 #define HW_HDR_LEN 2 /* Header size used to store ack info */
45 #define MAX_EVENTS 64 /* size of event queue */
48 #define SBUFSIZE 4096 /* sk_buff payload size */
50 #define TRANSBUFSIZE 768 /* bytes per skb for transparent receive */
51 #define MAX_BUF_SIZE (SBUFSIZE - 2) /* Max. size of a data packet from LL */
53 /* compile time options */
56 #define GIG_MAYINITONDIAL
60 #define GIG_TICK 100 /* in milliseconds */
62 /* timeout values (unit: 1 sec) */
63 #define INIT_TIMEOUT 1
65 /* timeout values (unit: 0.1 sec) */
66 #define RING_TIMEOUT 3 /* for additional parameters to RING */
67 #define BAS_TIMEOUT 20 /* for response to Base USB ops */
68 #define ATRDY_TIMEOUT 3 /* for HD_READY_SEND_ATDATA */
70 #define BAS_RETRY 3 /* max. retries for base USB ops */
74 extern int gigaset_debuglevel
; /* "needs" cast to (enum debuglevel) */
76 /* debug flags, combine by adding/bitwise OR */
78 DEBUG_INTR
= 0x00008, /* interrupt processing */
79 DEBUG_CMD
= 0x00020, /* sent/received LL commands */
80 DEBUG_STREAM
= 0x00040, /* application data stream I/O events */
81 DEBUG_STREAM_DUMP
= 0x00080, /* application data stream content */
82 DEBUG_LLDATA
= 0x00100, /* sent/received LL data */
83 DEBUG_DRIVER
= 0x00400, /* driver structure */
84 DEBUG_HDLC
= 0x00800, /* M10x HDLC processing */
85 DEBUG_WRITE
= 0x01000, /* M105 data write */
86 DEBUG_TRANSCMD
= 0x02000, /* AT-COMMANDS+RESPONSES */
87 DEBUG_MCMD
= 0x04000, /* COMMANDS THAT ARE SENT VERY OFTEN */
88 DEBUG_INIT
= 0x08000, /* (de)allocation+initialization of data
90 DEBUG_SUSPEND
= 0x10000, /* suspend/resume processing */
91 DEBUG_OUTPUT
= 0x20000, /* output to device */
92 DEBUG_ISO
= 0x40000, /* isochronous transfers */
93 DEBUG_IF
= 0x80000, /* character device operations */
94 DEBUG_USBREQ
= 0x100000, /* USB communication (except payload
96 DEBUG_LOCKCMD
= 0x200000, /* AT commands and responses when
99 DEBUG_ANY
= 0x3fffff, /* print message if any of the others is
103 #ifdef CONFIG_GIGASET_DEBUG
105 #define gig_dbg(level, format, arg...) \
107 if (unlikely(((enum debuglevel)gigaset_debuglevel) & (level))) \
108 printk(KERN_DEBUG KBUILD_MODNAME ": " format "\n", \
111 #define DEBUG_DEFAULT (DEBUG_TRANSCMD | DEBUG_CMD | DEBUG_USBREQ)
115 #define gig_dbg(level, format, arg...) do {} while (0)
116 #define DEBUG_DEFAULT 0
120 void gigaset_dbg_buffer(enum debuglevel level
, const unsigned char *msg
,
121 size_t len
, const unsigned char *buf
);
123 /* connection state */
125 #define ZSAU_DISCONNECT_IND 4
126 #define ZSAU_OUTGOING_CALL_PROCEEDING 1
127 #define ZSAU_PROCEEDING 1
128 #define ZSAU_CALL_DELIVERED 2
129 #define ZSAU_ACTIVE 3
131 #define ZSAU_DISCONNECT_REQ 6
132 #define ZSAU_UNKNOWN -1
134 /* USB control transfer requests */
135 #define OUT_VENDOR_REQ (USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT)
136 #define IN_VENDOR_REQ (USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT)
138 /* int-in-events 3070 */
139 #define HD_B1_FLOW_CONTROL 0x80
140 #define HD_B2_FLOW_CONTROL 0x81
141 #define HD_RECEIVEATDATA_ACK (0x35) // 3070
142 // att: HD_RECEIVE>>AT<<DATA_ACK
143 #define HD_READY_SEND_ATDATA (0x36) // 3070
144 #define HD_OPEN_ATCHANNEL_ACK (0x37) // 3070
145 #define HD_CLOSE_ATCHANNEL_ACK (0x38) // 3070
146 #define HD_DEVICE_INIT_OK (0x11) // ISurf USB + 3070
147 #define HD_OPEN_B1CHANNEL_ACK (0x51) // ISurf USB + 3070
148 #define HD_OPEN_B2CHANNEL_ACK (0x52) // ISurf USB + 3070
149 #define HD_CLOSE_B1CHANNEL_ACK (0x53) // ISurf USB + 3070
150 #define HD_CLOSE_B2CHANNEL_ACK (0x54) // ISurf USB + 3070
152 #define HD_SUSPEND_END (0x61) // ISurf USB
154 #define HD_RESET_INTERRUPT_PIPE_ACK (0xFF) // ISurf USB + 3070
156 /* control requests 3070 */
157 #define HD_OPEN_B1CHANNEL (0x23) // ISurf USB + 3070
158 #define HD_CLOSE_B1CHANNEL (0x24) // ISurf USB + 3070
159 #define HD_OPEN_B2CHANNEL (0x25) // ISurf USB + 3070
160 #define HD_CLOSE_B2CHANNEL (0x26) // ISurf USB + 3070
161 #define HD_RESET_INTERRUPT_PIPE (0x27) // ISurf USB + 3070
162 #define HD_DEVICE_INIT_ACK (0x34) // ISurf USB + 3070
163 #define HD_WRITE_ATMESSAGE (0x12) // 3070
164 #define HD_READ_ATMESSAGE (0x13) // 3070
165 #define HD_OPEN_ATCHANNEL (0x28) // 3070
166 #define HD_CLOSE_ATCHANNEL (0x29) // 3070
168 /* number of B channels supported by base driver */
169 #define BAS_CHANNELS 2
171 /* USB frames for isochronous transfer */
172 #define BAS_FRAMETIME 1 /* number of milliseconds between frames */
173 #define BAS_NUMFRAMES 8 /* number of frames per URB */
174 #define BAS_MAXFRAME 16 /* allocated bytes per frame */
175 #define BAS_NORMFRAME 8 /* send size without flow control */
176 #define BAS_HIGHFRAME 10 /* " " with positive flow control */
177 #define BAS_LOWFRAME 5 /* " " with negative flow control */
178 #define BAS_CORRFRAMES 4 /* flow control multiplicator */
180 #define BAS_INBUFSIZE (BAS_MAXFRAME * BAS_NUMFRAMES)
181 /* size of isoc in buf per URB */
182 #define BAS_OUTBUFSIZE 4096 /* size of common isoc out buffer */
183 #define BAS_OUTBUFPAD BAS_MAXFRAME /* size of pad area for isoc out buf */
186 #define BAS_OUTURBS 3
188 /* 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_PROTO_L2 -113
220 #define EV_ACCEPT -114
223 #define EV_BC_OPEN -117
224 #define EV_BC_CLOSED -118
227 #define INS_command 0x0001
228 #define INS_DLE_char 0x0002
229 #define INS_byte_stuff 0x0004
230 #define INS_have_data 0x0008
231 #define INS_skip_frame 0x0010
232 #define INS_DLE_command 0x0020
233 #define INS_flag_hunt 0x0040
236 #define CHS_D_UP 0x01
237 #define CHS_B_UP 0x02
238 #define CHS_NOTIFY_LL 0x04
240 #define ICALL_REJECT 0
241 #define ICALL_ACCEPT 1
242 #define ICALL_IGNORE 2
245 #define MS_UNINITIALIZED 0
248 #define MS_SHUTDOWN 3
260 #define SM_ISDN 1 /* default */
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_m10x
[];
286 extern struct reply_t gigaset_tab_nocid_m10x
[];
289 unsigned char *rcvbuf
; /* usb-gigaset receive buffer */
290 struct bc_state
*bcs
;
291 struct cardstate
*cs
;
294 unsigned char data
[RBUFSIZE
];
297 /* isochronous write buffer structure
298 * circular buffer with pad area for extraction of complete USB frames
299 * - data[read..nextread-1] is valid data already submitted to the USB subsystem
300 * - data[nextread..write-1] is valid data yet to be sent
301 * - data[write] is the next byte to write to
302 * - in byte-oriented L2 procotols, it is completely free
303 * - in bit-oriented L2 procotols, it may contain a partial byte of valid data
304 * - data[write+1..read-1] is free
305 * - wbits is the number of valid data bits in data[write], starting at the LSB
306 * - writesem is the semaphore for writing to the buffer:
307 * if writesem <= 0, data[write..read-1] is currently being written to
308 * - idle contains the byte value to repeat when the end of valid data is
309 * reached; if nextread==write (buffer contains no data to send), either the
310 * BAS_OUTBUFPAD bytes immediately before data[write] (if
311 * write>=BAS_OUTBUFPAD) or those of the pad area (if write<BAS_OUTBUFPAD)
312 * are also filled with that value
320 unsigned char data
[BAS_OUTBUFSIZE
+ BAS_OUTBUFPAD
];
324 /* isochronous write URB context structure
325 * data to be stored along with the URB and retrieved when it is returned
326 * as completed by the USB subsystem
327 * - urb: pointer to the URB itself
328 * - bcs: pointer to the B Channel control structure
329 * - limit: end of write buffer area covered by this URB
330 * - status: URB completion status
332 struct isow_urbctx_t
{
334 struct bc_state
*bcs
;
339 /* AT state structure
340 * data associated with the state of an ISDN connection, whether or not
341 * it is currently assigned a B channel
344 struct list_head list
;
347 unsigned timer_index
;
348 unsigned long timer_expires
;
350 unsigned int ConState
; /* State of connection */
351 struct reply_t
*replystruct
;
353 int int_var
[VAR_NUM
]; /* see VAR_XXXX */
354 char *str_var
[STR_NUM
]; /* see STR_XXXX */
355 unsigned pending_commands
; /* see PC_XXXX */
358 struct cardstate
*cs
;
359 struct bc_state
*bcs
;
363 unsigned char *response
;
364 int resp_code
; /* RSP_XXXX */
365 int type
; /* RT_XXXX */
373 struct at_state_t
*at_state
;
376 /* This buffer holds all information about the used B-Channel */
378 struct sk_buff
*tx_skb
; /* Current transfer buffer to modem */
379 struct sk_buff_head squeue
; /* B-Channel send Queue */
381 /* Variables for debugging .. */
382 int corrupted
; /* Counter for corrupted packages */
383 int trans_down
; /* Counter of packages (downstream) */
384 int trans_up
; /* Counter of packages (upstream) */
386 struct at_state_t at_state
;
387 unsigned long rcvbytes
;
391 int inputstate
; /* see INS_XXXX */
395 struct cardstate
*cs
;
397 unsigned chstate
; /* bitmap (CHS_*) */
399 unsigned proto2
; /* Layer 2 protocol (ISDN_PROTO_L2_*) */
400 char *commands
[AT_NUM
]; /* see AT_XXXX */
402 #ifdef CONFIG_GIGASET_DEBUG
408 /* private data of hardware drivers */
410 struct ser_bc_state
*ser
; /* serial hardware driver */
411 struct usb_bc_state
*usb
; /* usb hardware driver (m105) */
412 struct bas_bc_state
*bas
; /* usb hardware driver (base) */
417 struct gigaset_driver
*driver
;
418 unsigned minor_index
;
420 struct device
*tty_dev
;
423 const struct gigaset_ops
*ops
;
425 /* Stuff to handle communication */
426 wait_queue_head_t waitqueue
;
428 int mode
; /* see M_XXXX */
429 int mstate
; /* Modem state: see MS_XXXX */
430 /* only changed by the event layer */
434 struct bc_state
*bcs
; /* Array of struct bc_state */
436 int onechannel
; /* data and commands transmitted in one
440 struct at_state_t at_state
; /* at_state_t for cid == 0 */
441 struct list_head temp_at_states
;/* list of temporary "struct
442 at_state_t"s without B channel */
444 struct inbuf_t
*inbuf
;
446 struct cmdbuf_t
*cmdbuf
, *lastcmdbuf
;
448 unsigned curlen
, cmdbytes
;
451 struct tty_struct
*tty
;
452 struct tasklet_struct if_wake_tasklet
;
453 unsigned control_state
;
458 unsigned running
; /* !=0 if events are handled */
459 unsigned connected
; /* !=0 if hardware is connected */
460 unsigned isdn_up
; /* !=0 after ISDN_STAT_RUN */
464 int myid
; /* id for communication with LL */
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 modem commands/responses are
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 i4l.c to put an skb into the send-queue. */
621 int (*send_skb
)(struct bc_state
*bcs
, struct sk_buff
*skb
);
623 /* Called from ev-layer.c to process a block of data
624 * received through the common/control channel. */
625 void (*handle_input
)(struct inbuf_t
*inbuf
);
629 /* = Common structures and definitions ======================================= */
631 /* Parser states for DLE-Event:
632 * <DLE-EVENT>: <DLE_FLAG> "X" <EVENT> <DLE_FLAG> "."
634 * <EVENT>: ((a-z)* | (A-Z)* | (0-10)*)+
636 #define DLE_FLAG 0x10
638 /* ===========================================================================
639 * Functions implemented in asyncdata.c
642 /* Called from i4l.c to put an skb into the send-queue.
643 * After sending gigaset_skb_sent() should be called. */
644 int gigaset_m10x_send_skb(struct bc_state
*bcs
, struct sk_buff
*skb
);
646 /* Called from ev-layer.c to process a block of data
647 * received through the common/control channel. */
648 void gigaset_m10x_input(struct inbuf_t
*inbuf
);
650 /* ===========================================================================
651 * Functions implemented in isocdata.c
654 /* Called from i4l.c to put an skb into the send-queue.
655 * After sending gigaset_skb_sent() should be called. */
656 int gigaset_isoc_send_skb(struct bc_state
*bcs
, struct sk_buff
*skb
);
658 /* Called from ev-layer.c to process a block of data
659 * received through the common/control channel. */
660 void gigaset_isoc_input(struct inbuf_t
*inbuf
);
662 /* Called from bas-gigaset.c to process a block of data
663 * received through the isochronous channel */
664 void gigaset_isoc_receive(unsigned char *src
, unsigned count
,
665 struct bc_state
*bcs
);
667 /* Called from bas-gigaset.c to put a block of data
668 * into the isochronous output buffer */
669 int gigaset_isoc_buildframe(struct bc_state
*bcs
, unsigned char *in
, int len
);
671 /* Called from bas-gigaset.c to initialize the isochronous output buffer */
672 void gigaset_isowbuf_init(struct isowbuf_t
*iwb
, unsigned char idle
);
674 /* Called from bas-gigaset.c to retrieve a block of bytes for sending */
675 int gigaset_isowbuf_getbytes(struct isowbuf_t
*iwb
, int size
);
677 /* ===========================================================================
678 * Functions implemented in i4l.c/gigaset.h
681 /* Called by gigaset_initcs() for setting up with the isdn4linux subsystem */
682 int gigaset_register_to_LL(struct cardstate
*cs
, const char *isdnid
);
684 /* Called from xxx-gigaset.c to indicate completion of sending an skb */
685 void gigaset_skb_sent(struct bc_state
*bcs
, struct sk_buff
*skb
);
687 /* Called from common.c/ev-layer.c to indicate events relevant to the LL */
688 int gigaset_isdn_icall(struct at_state_t
*at_state
);
689 int gigaset_isdn_setup_accept(struct at_state_t
*at_state
);
690 int gigaset_isdn_setup_dial(struct at_state_t
*at_state
, void *data
);
692 void gigaset_i4l_cmd(struct cardstate
*cs
, int cmd
);
693 void gigaset_i4l_channel_cmd(struct bc_state
*bcs
, int cmd
);
696 static inline void gigaset_isdn_rcv_err(struct bc_state
*bcs
)
701 gig_dbg(DEBUG_CMD
, "sending L1ERR");
702 response
.driver
= bcs
->cs
->myid
;
703 response
.command
= ISDN_STAT_L1ERR
;
704 response
.arg
= bcs
->channel
;
705 response
.parm
.errcode
= ISDN_STAT_L1ERR_RECV
;
706 bcs
->cs
->iif
.statcallb(&response
);
709 /* ===========================================================================
710 * Functions implemented in ev-layer.c
713 /* tasklet called from common.c to process queued events */
714 void gigaset_handle_event(unsigned long data
);
716 /* called from isocdata.c / asyncdata.c
717 * when a complete modem response line has been received */
718 void gigaset_handle_modem_response(struct cardstate
*cs
);
720 /* ===========================================================================
721 * Functions implemented in proc.c
724 /* initialize sysfs for device */
725 void gigaset_init_dev_sysfs(struct cardstate
*cs
);
726 void gigaset_free_dev_sysfs(struct cardstate
*cs
);
728 /* ===========================================================================
729 * Functions implemented in common.c/gigaset.h
732 void gigaset_bcs_reinit(struct bc_state
*bcs
);
733 void gigaset_at_init(struct at_state_t
*at_state
, struct bc_state
*bcs
,
734 struct cardstate
*cs
, int cid
);
735 int gigaset_get_channel(struct bc_state
*bcs
);
736 void gigaset_free_channel(struct bc_state
*bcs
);
737 int gigaset_get_channels(struct cardstate
*cs
);
738 void gigaset_free_channels(struct cardstate
*cs
);
739 void gigaset_block_channels(struct cardstate
*cs
);
741 /* Allocate and initialize driver structure. */
742 struct gigaset_driver
*gigaset_initdriver(unsigned minor
, unsigned minors
,
743 const char *procname
,
745 const struct gigaset_ops
*ops
,
746 struct module
*owner
);
748 /* Deallocate driver structure. */
749 void gigaset_freedriver(struct gigaset_driver
*drv
);
750 void gigaset_debugdrivers(void);
751 struct cardstate
*gigaset_get_cs_by_tty(struct tty_struct
*tty
);
752 struct cardstate
*gigaset_get_cs_by_id(int id
);
753 void gigaset_blockdriver(struct gigaset_driver
*drv
);
755 /* Allocate and initialize card state. Calls hardware dependent
756 gigaset_init[b]cs(). */
757 struct cardstate
*gigaset_initcs(struct gigaset_driver
*drv
, int channels
,
758 int onechannel
, int ignoreframes
,
759 int cidmode
, const char *modulename
);
761 /* Free card state. Calls hardware dependent gigaset_free[b]cs(). */
762 void gigaset_freecs(struct cardstate
*cs
);
764 /* Tell common.c that hardware and driver are ready. */
765 int gigaset_start(struct cardstate
*cs
);
767 /* Tell common.c that the device is not present any more. */
768 void gigaset_stop(struct cardstate
*cs
);
770 /* Tell common.c that the driver is being unloaded. */
771 int gigaset_shutdown(struct cardstate
*cs
);
773 /* Tell common.c that an skb has been sent. */
774 void gigaset_skb_sent(struct bc_state
*bcs
, struct sk_buff
*skb
);
776 /* Append event to the queue.
777 * Returns NULL on failure or a pointer to the event on success.
778 * ptr must be kmalloc()ed (and not be freed by the caller).
780 struct event_t
*gigaset_add_event(struct cardstate
*cs
,
781 struct at_state_t
*at_state
, int type
,
782 void *ptr
, int parameter
, void *arg
);
784 /* Called on CONFIG1 command from frontend. */
785 int gigaset_enterconfigmode(struct cardstate
*cs
); //0: success <0: errorcode
787 /* cs->lock must not be locked */
788 static inline void gigaset_schedule_event(struct cardstate
*cs
)
791 spin_lock_irqsave(&cs
->lock
, flags
);
793 tasklet_schedule(&cs
->event_tasklet
);
794 spin_unlock_irqrestore(&cs
->lock
, flags
);
797 /* Tell common.c that B channel has been closed. */
798 /* cs->lock must not be locked */
799 static inline void gigaset_bchannel_down(struct bc_state
*bcs
)
801 gigaset_add_event(bcs
->cs
, &bcs
->at_state
, EV_BC_CLOSED
, NULL
, 0, NULL
);
803 gig_dbg(DEBUG_CMD
, "scheduling BC_CLOSED");
804 gigaset_schedule_event(bcs
->cs
);
807 /* Tell common.c that B channel has been opened. */
808 /* cs->lock must not be locked */
809 static inline void gigaset_bchannel_up(struct bc_state
*bcs
)
811 gigaset_add_event(bcs
->cs
, &bcs
->at_state
, EV_BC_OPEN
, NULL
, 0, NULL
);
813 gig_dbg(DEBUG_CMD
, "scheduling BC_OPEN");
814 gigaset_schedule_event(bcs
->cs
);
817 /* handling routines for sk_buff */
818 /* ============================= */
820 /* pass received skb to LL
821 * Warning: skb must not be accessed anymore!
823 static inline void gigaset_rcv_skb(struct sk_buff
*skb
,
824 struct cardstate
*cs
,
825 struct bc_state
*bcs
)
827 cs
->iif
.rcvcallb_skb(cs
->myid
, bcs
->channel
, skb
);
831 /* handle reception of corrupted skb
832 * Warning: skb must not be accessed anymore!
834 static inline void gigaset_rcv_error(struct sk_buff
*procskb
,
835 struct cardstate
*cs
,
836 struct bc_state
*bcs
)
839 dev_kfree_skb(procskb
);
845 gigaset_isdn_rcv_err(bcs
);
849 /* append received bytes to inbuf */
850 int gigaset_fill_inbuf(struct inbuf_t
*inbuf
, const unsigned char *src
,
853 /* ===========================================================================
854 * Functions implemented in interface.c
857 /* initialize interface */
858 void gigaset_if_initdriver(struct gigaset_driver
*drv
, const char *procname
,
859 const char *devname
);
860 /* release interface */
861 void gigaset_if_freedriver(struct gigaset_driver
*drv
);
863 void gigaset_if_init(struct cardstate
*cs
);
865 void gigaset_if_free(struct cardstate
*cs
);
866 /* device received data */
867 void gigaset_if_receive(struct cardstate
*cs
,
868 unsigned char *buffer
, size_t len
);