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
;
365 struct at_state_t
*at_state
;
368 /* This buffer holds all information about the used B-Channel */
370 struct sk_buff
*tx_skb
; /* Current transfer buffer to modem */
371 struct sk_buff_head squeue
; /* B-Channel send Queue */
373 /* Variables for debugging .. */
374 int corrupted
; /* Counter for corrupted packages */
375 int trans_down
; /* Counter of packages (downstream) */
376 int trans_up
; /* Counter of packages (upstream) */
378 struct at_state_t at_state
;
382 int inputstate
; /* see INS_XXXX */
386 struct cardstate
*cs
;
388 unsigned chstate
; /* bitmap (CHS_*) */
390 unsigned proto2
; /* layer 2 protocol (L2_*) */
391 char *commands
[AT_NUM
]; /* see AT_XXXX */
393 #ifdef CONFIG_GIGASET_DEBUG
399 /* private data of hardware drivers */
401 struct ser_bc_state
*ser
; /* serial hardware driver */
402 struct usb_bc_state
*usb
; /* usb hardware driver (m105) */
403 struct bas_bc_state
*bas
; /* usb hardware driver (base) */
406 void *ap
; /* LL application structure */
410 struct gigaset_driver
*driver
;
411 unsigned minor_index
;
413 struct device
*tty_dev
;
416 const struct gigaset_ops
*ops
;
418 /* Stuff to handle communication */
419 wait_queue_head_t waitqueue
;
421 int mode
; /* see M_XXXX */
422 int mstate
; /* Modem state: see MS_XXXX */
423 /* only changed by the event layer */
427 struct bc_state
*bcs
; /* Array of struct bc_state */
429 int onechannel
; /* data and commands transmitted in one
433 struct at_state_t at_state
; /* at_state_t for cid == 0 */
434 struct list_head temp_at_states
;/* list of temporary "struct
435 at_state_t"s without B channel */
437 struct inbuf_t
*inbuf
;
439 struct cmdbuf_t
*cmdbuf
, *lastcmdbuf
;
441 unsigned curlen
, cmdbytes
;
444 struct tty_struct
*tty
;
445 struct tasklet_struct if_wake_tasklet
;
446 unsigned control_state
;
451 unsigned running
; /* !=0 if events are handled */
452 unsigned connected
; /* !=0 if hardware is connected */
453 unsigned isdn_up
; /* !=0 after gigaset_isdn_start() */
457 int myid
; /* id for communication with LL */
458 void *iif
; /* LL interface structure */
459 unsigned short hw_hdr_len
; /* headroom needed in data skbs */
461 struct reply_t
*tabnocid
;
462 struct reply_t
*tabcid
;
464 int ignoreframes
; /* frames to ignore after setting up the
466 struct mutex mutex
; /* locks this structure:
467 * connected is not changed,
468 * hardware_up is not changed,
469 * MState is not changed to or from
472 struct timer_list timer
;
474 int dle
; /* !=0 if DLE mode is active
475 (ZDLE=1 received -- M10x only) */
476 int cur_at_seq
; /* sequence of AT commands being
478 int curchannel
; /* channel those commands are meant
480 int commands_pending
; /* flag(s) in xxx.commands_pending have
482 struct tasklet_struct event_tasklet
;
483 /* tasklet for serializing AT commands.
485 * -> for modem reponses (and
486 * incoming data for M10x)
488 * -> after setting bits in
489 * xxx.at_state.pending_command
490 * (e.g. command from LL) */
491 struct tasklet_struct write_tasklet
;
492 /* tasklet for serial output
493 * (not used in base driver) */
496 struct event_t events
[MAX_EVENTS
];
497 unsigned ev_tail
, ev_head
;
500 /* current modem response */
501 unsigned char respdata
[MAX_RESP_SIZE
];
504 /* private data of hardware drivers */
506 struct usb_cardstate
*usb
; /* USB hardware driver (m105) */
507 struct ser_cardstate
*ser
; /* serial hardware driver */
508 struct bas_cardstate
*bas
; /* USB hardware driver (base) */
512 struct gigaset_driver
{
513 struct list_head list
;
514 spinlock_t lock
; /* locks minor tables and blocked */
515 struct tty_driver
*tty
;
519 struct cardstate
*cs
;
522 const struct gigaset_ops
*ops
;
523 struct module
*owner
;
527 struct cmdbuf_t
*next
, *prev
;
529 struct tasklet_struct
*wake_tasklet
;
530 unsigned char buf
[0];
533 struct bas_bc_state
{
534 /* isochronous output state */
537 spinlock_t isooutlock
;
538 struct isow_urbctx_t isoouturbs
[BAS_OUTURBS
];
539 struct isow_urbctx_t
*isooutdone
, *isooutfree
, *isooutovfl
;
540 struct isowbuf_t
*isooutbuf
;
541 unsigned numsub
; /* submitted URB counter
542 (for diagnostic messages only) */
543 struct tasklet_struct sent_tasklet
;
545 /* isochronous input state */
546 spinlock_t isoinlock
;
547 struct urb
*isoinurbs
[BAS_INURBS
];
548 unsigned char isoinbuf
[BAS_INBUFSIZE
* BAS_INURBS
];
549 struct urb
*isoindone
; /* completed isoc read URB */
550 int isoinstatus
; /* status of completed URB */
551 int loststatus
; /* status of dropped URB */
552 unsigned isoinlost
; /* number of bytes lost */
553 /* state of bit unstuffing algorithm
554 (in addition to BC_state.inputstate) */
555 unsigned seqlen
; /* number of '1' bits not yet
557 unsigned inbyte
, inbits
; /* collected bits for next byte */
559 unsigned goodbytes
; /* bytes correctly received */
560 unsigned alignerrs
; /* frames with incomplete byte at end */
561 unsigned fcserrs
; /* FCS errors */
562 unsigned frameerrs
; /* framing errors */
563 unsigned giants
; /* long frames */
564 unsigned runts
; /* short frames */
565 unsigned aborts
; /* HDLC aborts */
566 unsigned shared0s
; /* '0' bits shared between flags */
567 unsigned stolen0s
; /* '0' stuff bits also serving as
569 struct tasklet_struct rcvd_tasklet
;
573 /* Called from ev-layer.c/interface.c for sending AT commands to the
575 int (*write_cmd
)(struct cardstate
*cs
,
576 const unsigned char *buf
, int len
,
577 struct tasklet_struct
*wake_tasklet
);
579 /* Called from interface.c for additional device control */
580 int (*write_room
)(struct cardstate
*cs
);
581 int (*chars_in_buffer
)(struct cardstate
*cs
);
582 int (*brkchars
)(struct cardstate
*cs
, const unsigned char buf
[6]);
584 /* Called from ev-layer.c after setting up connection
585 * Should call gigaset_bchannel_up(), when finished. */
586 int (*init_bchannel
)(struct bc_state
*bcs
);
588 /* Called from ev-layer.c after hanging up
589 * Should call gigaset_bchannel_down(), when finished. */
590 int (*close_bchannel
)(struct bc_state
*bcs
);
592 /* Called by gigaset_initcs() for setting up bcs->hw.xxx */
593 int (*initbcshw
)(struct bc_state
*bcs
);
595 /* Called by gigaset_freecs() for freeing bcs->hw.xxx */
596 int (*freebcshw
)(struct bc_state
*bcs
);
598 /* Called by gigaset_bchannel_down() for resetting bcs->hw.xxx */
599 void (*reinitbcshw
)(struct bc_state
*bcs
);
601 /* Called by gigaset_initcs() for setting up cs->hw.xxx */
602 int (*initcshw
)(struct cardstate
*cs
);
604 /* Called by gigaset_freecs() for freeing cs->hw.xxx */
605 void (*freecshw
)(struct cardstate
*cs
);
607 /* Called from common.c/interface.c for additional serial port
609 int (*set_modem_ctrl
)(struct cardstate
*cs
, unsigned old_state
,
611 int (*baud_rate
)(struct cardstate
*cs
, unsigned cflag
);
612 int (*set_line_ctrl
)(struct cardstate
*cs
, unsigned cflag
);
614 /* Called from LL interface to put an skb into the send-queue.
615 * After sending is completed, gigaset_skb_sent() must be called
616 * with the skb's link layer header preserved. */
617 int (*send_skb
)(struct bc_state
*bcs
, struct sk_buff
*skb
);
619 /* Called from ev-layer.c to process a block of data
620 * received through the common/control channel. */
621 void (*handle_input
)(struct inbuf_t
*inbuf
);
625 /* = Common structures and definitions =======================================
628 /* Parser states for DLE-Event:
629 * <DLE-EVENT>: <DLE_FLAG> "X" <EVENT> <DLE_FLAG> "."
631 * <EVENT>: ((a-z)* | (A-Z)* | (0-10)*)+
633 #define DLE_FLAG 0x10
635 /* ===========================================================================
636 * Functions implemented in asyncdata.c
639 /* Called from LL interface to put an skb into the send queue. */
640 int gigaset_m10x_send_skb(struct bc_state
*bcs
, struct sk_buff
*skb
);
642 /* Called from ev-layer.c to process a block of data
643 * received through the common/control channel. */
644 void gigaset_m10x_input(struct inbuf_t
*inbuf
);
646 /* ===========================================================================
647 * Functions implemented in isocdata.c
650 /* Called from LL interface to put an skb into the send queue. */
651 int gigaset_isoc_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_isoc_input(struct inbuf_t
*inbuf
);
657 /* Called from bas-gigaset.c to process a block of data
658 * received through the isochronous channel */
659 void gigaset_isoc_receive(unsigned char *src
, unsigned count
,
660 struct bc_state
*bcs
);
662 /* Called from bas-gigaset.c to put a block of data
663 * into the isochronous output buffer */
664 int gigaset_isoc_buildframe(struct bc_state
*bcs
, unsigned char *in
, int len
);
666 /* Called from bas-gigaset.c to initialize the isochronous output buffer */
667 void gigaset_isowbuf_init(struct isowbuf_t
*iwb
, unsigned char idle
);
669 /* Called from bas-gigaset.c to retrieve a block of bytes for sending */
670 int gigaset_isowbuf_getbytes(struct isowbuf_t
*iwb
, int size
);
672 /* ===========================================================================
673 * Functions implemented in LL interface
676 /* Called from common.c for setting up/shutting down with the ISDN subsystem */
677 int gigaset_isdn_register(struct cardstate
*cs
, const char *isdnid
);
678 void gigaset_isdn_unregister(struct cardstate
*cs
);
680 /* Called from hardware module to indicate completion of an skb */
681 void gigaset_skb_sent(struct bc_state
*bcs
, struct sk_buff
*skb
);
682 void gigaset_skb_rcvd(struct bc_state
*bcs
, struct sk_buff
*skb
);
683 void gigaset_isdn_rcv_err(struct bc_state
*bcs
);
685 /* Called from common.c/ev-layer.c to indicate events relevant to the LL */
686 void gigaset_isdn_start(struct cardstate
*cs
);
687 void gigaset_isdn_stop(struct cardstate
*cs
);
688 int gigaset_isdn_icall(struct at_state_t
*at_state
);
689 void gigaset_isdn_connD(struct bc_state
*bcs
);
690 void gigaset_isdn_hupD(struct bc_state
*bcs
);
691 void gigaset_isdn_connB(struct bc_state
*bcs
);
692 void gigaset_isdn_hupB(struct bc_state
*bcs
);
694 /* ===========================================================================
695 * Functions implemented in ev-layer.c
698 /* tasklet called from common.c to process queued events */
699 void gigaset_handle_event(unsigned long data
);
701 /* called from isocdata.c / asyncdata.c
702 * when a complete modem response line has been received */
703 void gigaset_handle_modem_response(struct cardstate
*cs
);
705 /* ===========================================================================
706 * Functions implemented in proc.c
709 /* initialize sysfs for device */
710 void gigaset_init_dev_sysfs(struct cardstate
*cs
);
711 void gigaset_free_dev_sysfs(struct cardstate
*cs
);
713 /* ===========================================================================
714 * Functions implemented in common.c/gigaset.h
717 void gigaset_bcs_reinit(struct bc_state
*bcs
);
718 void gigaset_at_init(struct at_state_t
*at_state
, struct bc_state
*bcs
,
719 struct cardstate
*cs
, int cid
);
720 int gigaset_get_channel(struct bc_state
*bcs
);
721 struct bc_state
*gigaset_get_free_channel(struct cardstate
*cs
);
722 void gigaset_free_channel(struct bc_state
*bcs
);
723 int gigaset_get_channels(struct cardstate
*cs
);
724 void gigaset_free_channels(struct cardstate
*cs
);
725 void gigaset_block_channels(struct cardstate
*cs
);
727 /* Allocate and initialize driver structure. */
728 struct gigaset_driver
*gigaset_initdriver(unsigned minor
, unsigned minors
,
729 const char *procname
,
731 const struct gigaset_ops
*ops
,
732 struct module
*owner
);
734 /* Deallocate driver structure. */
735 void gigaset_freedriver(struct gigaset_driver
*drv
);
736 void gigaset_debugdrivers(void);
737 struct cardstate
*gigaset_get_cs_by_tty(struct tty_struct
*tty
);
738 struct cardstate
*gigaset_get_cs_by_id(int id
);
739 void gigaset_blockdriver(struct gigaset_driver
*drv
);
741 /* Allocate and initialize card state. Calls hardware dependent
742 gigaset_init[b]cs(). */
743 struct cardstate
*gigaset_initcs(struct gigaset_driver
*drv
, int channels
,
744 int onechannel
, int ignoreframes
,
745 int cidmode
, const char *modulename
);
747 /* Free card state. Calls hardware dependent gigaset_free[b]cs(). */
748 void gigaset_freecs(struct cardstate
*cs
);
750 /* Tell common.c that hardware and driver are ready. */
751 int gigaset_start(struct cardstate
*cs
);
753 /* Tell common.c that the device is not present any more. */
754 void gigaset_stop(struct cardstate
*cs
);
756 /* Tell common.c that the driver is being unloaded. */
757 int gigaset_shutdown(struct cardstate
*cs
);
759 /* Tell common.c that an skb has been sent. */
760 void gigaset_skb_sent(struct bc_state
*bcs
, struct sk_buff
*skb
);
762 /* Append event to the queue.
763 * Returns NULL on failure or a pointer to the event on success.
764 * ptr must be kmalloc()ed (and not be freed by the caller).
766 struct event_t
*gigaset_add_event(struct cardstate
*cs
,
767 struct at_state_t
*at_state
, int type
,
768 void *ptr
, int parameter
, void *arg
);
770 /* Called on CONFIG1 command from frontend. */
771 int gigaset_enterconfigmode(struct cardstate
*cs
);
773 /* cs->lock must not be locked */
774 static inline void gigaset_schedule_event(struct cardstate
*cs
)
777 spin_lock_irqsave(&cs
->lock
, flags
);
779 tasklet_schedule(&cs
->event_tasklet
);
780 spin_unlock_irqrestore(&cs
->lock
, flags
);
783 /* Tell common.c that B channel has been closed. */
784 /* cs->lock must not be locked */
785 static inline void gigaset_bchannel_down(struct bc_state
*bcs
)
787 gigaset_add_event(bcs
->cs
, &bcs
->at_state
, EV_BC_CLOSED
, NULL
, 0, NULL
);
789 gig_dbg(DEBUG_CMD
, "scheduling BC_CLOSED");
790 gigaset_schedule_event(bcs
->cs
);
793 /* Tell common.c that B channel has been opened. */
794 /* cs->lock must not be locked */
795 static inline void gigaset_bchannel_up(struct bc_state
*bcs
)
797 gigaset_add_event(bcs
->cs
, &bcs
->at_state
, EV_BC_OPEN
, NULL
, 0, NULL
);
799 gig_dbg(DEBUG_CMD
, "scheduling BC_OPEN");
800 gigaset_schedule_event(bcs
->cs
);
803 /* handling routines for sk_buff */
804 /* ============================= */
806 /* append received bytes to inbuf */
807 int gigaset_fill_inbuf(struct inbuf_t
*inbuf
, const unsigned char *src
,
810 /* ===========================================================================
811 * Functions implemented in interface.c
814 /* initialize interface */
815 void gigaset_if_initdriver(struct gigaset_driver
*drv
, const char *procname
,
816 const char *devname
);
817 /* release interface */
818 void gigaset_if_freedriver(struct gigaset_driver
*drv
);
820 void gigaset_if_init(struct cardstate
*cs
);
822 void gigaset_if_free(struct cardstate
*cs
);
823 /* device received data */
824 void gigaset_if_receive(struct cardstate
*cs
,
825 unsigned char *buffer
, size_t len
);