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 #include <linux/kernel.h>
20 #include <linux/compiler.h>
21 #include <linux/types.h>
22 #include <linux/spinlock.h>
23 #include <linux/isdnif.h>
24 #include <linux/usb.h>
25 #include <linux/skbuff.h>
26 #include <linux/netdevice.h>
27 #include <linux/ppp_defs.h>
28 #include <linux/timer.h>
29 #include <linux/interrupt.h>
30 #include <linux/tty.h>
31 #include <linux/tty_driver.h>
32 #include <linux/list.h>
33 #include <asm/atomic.h>
35 #define GIG_VERSION {0,5,0,0}
36 #define GIG_COMPAT {0,4,0,0}
38 #define MAX_REC_PARAMS 10 /* Max. number of params in response string */
39 #define MAX_RESP_SIZE 512 /* Max. size of a response string */
40 #define HW_HDR_LEN 2 /* Header size used to store ack info */
42 #define MAX_EVENTS 64 /* size of event queue */
45 #define SBUFSIZE 4096 /* sk_buff payload size */
47 #define TRANSBUFSIZE 768 /* bytes per skb for transparent receive */
48 #define MAX_BUF_SIZE (SBUFSIZE - 2) /* Max. size of a data packet from LL */
50 /* compile time options */
53 #define GIG_MAYINITONDIAL
57 #define GIG_TICK 100 /* in milliseconds */
59 /* timeout values (unit: 1 sec) */
60 #define INIT_TIMEOUT 1
62 /* timeout values (unit: 0.1 sec) */
63 #define RING_TIMEOUT 3 /* for additional parameters to RING */
64 #define BAS_TIMEOUT 20 /* for response to Base USB ops */
65 #define ATRDY_TIMEOUT 3 /* for HD_READY_SEND_ATDATA */
67 #define BAS_RETRY 3 /* max. retries for base USB ops */
71 extern int gigaset_debuglevel; /* "needs" cast to (enum debuglevel) */
73 /* any combination of these can be given with the 'debug=' parameter to insmod,
74 * e.g. 'insmod usb_gigaset.o debug=0x2c' will set DEBUG_OPEN, DEBUG_CMD and
78 DEBUG_REG = 0x0002, /* serial port I/O register operations */
79 DEBUG_OPEN = 0x0004, /* open/close serial port */
80 DEBUG_INTR = 0x0008, /* interrupt processing */
81 DEBUG_INTR_DUMP = 0x0010, /* Activating hexdump debug output on
82 interrupt requests, not available as
84 DEBUG_CMD = 0x00020, /* sent/received LL commands */
85 DEBUG_STREAM = 0x00040, /* application data stream I/O events */
86 DEBUG_STREAM_DUMP = 0x00080, /* application data stream content */
87 DEBUG_LLDATA = 0x00100, /* sent/received LL data */
88 DEBUG_INTR_0 = 0x00200, /* serial port interrupt processing */
89 DEBUG_DRIVER = 0x00400, /* driver structure */
90 DEBUG_HDLC = 0x00800, /* M10x HDLC processing */
91 DEBUG_WRITE = 0x01000, /* M105 data write */
92 DEBUG_TRANSCMD = 0x02000, /* AT-COMMANDS+RESPONSES */
93 DEBUG_MCMD = 0x04000, /* COMMANDS THAT ARE SENT VERY OFTEN */
94 DEBUG_INIT = 0x08000, /* (de)allocation+initialization of data
96 DEBUG_LOCK = 0x10000, /* semaphore operations */
97 DEBUG_OUTPUT = 0x20000, /* output to device */
98 DEBUG_ISO = 0x40000, /* isochronous transfers */
99 DEBUG_IF = 0x80000, /* character device operations */
100 DEBUG_USBREQ = 0x100000, /* USB communication (except payload
102 DEBUG_LOCKCMD = 0x200000, /* AT commands and responses when
105 DEBUG_ANY = 0x3fffff, /* print message if any of the others is
109 /* Kernel message macros for situations where dev_printk and friends cannot be
110 * used for lack of reliable access to a device structure.
111 * linux/usb.h already contains these but in an obsolete form which clutters
112 * the log needlessly, and according to the USB maintainer those should be
113 * removed rather than fixed anyway.
120 #define err(format, arg...) printk(KERN_ERR KBUILD_MODNAME ": " \
121 format "\n" , ## arg)
122 #define info(format, arg...) printk(KERN_INFO KBUILD_MODNAME ": " \
123 format "\n" , ## arg)
124 #define warn(format, arg...) printk(KERN_WARNING KBUILD_MODNAME ": " \
125 format "\n" , ## arg)
126 #define notice(format, arg...) printk(KERN_NOTICE KBUILD_MODNAME ": " \
127 format "\n" , ## arg)
129 #ifdef CONFIG_GIGASET_DEBUG
131 #define gig_dbg(level, format, arg...) \
133 if (unlikely(((enum debuglevel)gigaset_debuglevel) & (level))) \
134 printk(KERN_DEBUG KBUILD_MODNAME ": " format "\n", \
137 #define DEBUG_DEFAULT (DEBUG_TRANSCMD | DEBUG_CMD | DEBUG_USBREQ)
141 #define gig_dbg(level, format, arg...) do {} while (0)
142 #define DEBUG_DEFAULT 0
146 void gigaset_dbg_buffer(enum debuglevel level, const unsigned char *msg,
147 size_t len, const unsigned char *buf);
149 /* connection state */
151 #define ZSAU_DISCONNECT_IND 4
152 #define ZSAU_OUTGOING_CALL_PROCEEDING 1
153 #define ZSAU_PROCEEDING 1
154 #define ZSAU_CALL_DELIVERED 2
155 #define ZSAU_ACTIVE 3
157 #define ZSAU_DISCONNECT_REQ 6
158 #define ZSAU_UNKNOWN -1
160 /* USB control transfer requests */
161 #define OUT_VENDOR_REQ (USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT)
162 #define IN_VENDOR_REQ (USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT)
164 /* int-in-events 3070 */
165 #define HD_B1_FLOW_CONTROL 0x80
166 #define HD_B2_FLOW_CONTROL 0x81
167 #define HD_RECEIVEATDATA_ACK (0x35) // 3070
168 // att: HD_RECEIVE>>AT<<DATA_ACK
169 #define HD_READY_SEND_ATDATA (0x36) // 3070
170 #define HD_OPEN_ATCHANNEL_ACK (0x37) // 3070
171 #define HD_CLOSE_ATCHANNEL_ACK (0x38) // 3070
172 #define HD_DEVICE_INIT_OK (0x11) // ISurf USB + 3070
173 #define HD_OPEN_B1CHANNEL_ACK (0x51) // ISurf USB + 3070
174 #define HD_OPEN_B2CHANNEL_ACK (0x52) // ISurf USB + 3070
175 #define HD_CLOSE_B1CHANNEL_ACK (0x53) // ISurf USB + 3070
176 #define HD_CLOSE_B2CHANNEL_ACK (0x54) // ISurf USB + 3070
178 #define HD_SUSPEND_END (0x61) // ISurf USB
180 #define HD_RESET_INTERRUPT_PIPE_ACK (0xFF) // ISurf USB + 3070
182 /* control requests 3070 */
183 #define HD_OPEN_B1CHANNEL (0x23) // ISurf USB + 3070
184 #define HD_CLOSE_B1CHANNEL (0x24) // ISurf USB + 3070
185 #define HD_OPEN_B2CHANNEL (0x25) // ISurf USB + 3070
186 #define HD_CLOSE_B2CHANNEL (0x26) // ISurf USB + 3070
187 #define HD_RESET_INTERRUPT_PIPE (0x27) // ISurf USB + 3070
188 #define HD_DEVICE_INIT_ACK (0x34) // ISurf USB + 3070
189 #define HD_WRITE_ATMESSAGE (0x12) // 3070
190 #define HD_READ_ATMESSAGE (0x13) // 3070
191 #define HD_OPEN_ATCHANNEL (0x28) // 3070
192 #define HD_CLOSE_ATCHANNEL (0x29) // 3070
194 /* USB frames for isochronous transfer */
195 #define BAS_FRAMETIME 1 /* number of milliseconds between frames */
196 #define BAS_NUMFRAMES 8 /* number of frames per URB */
197 #define BAS_MAXFRAME 16 /* allocated bytes per frame */
198 #define BAS_NORMFRAME 8 /* send size without flow control */
199 #define BAS_HIGHFRAME 10 /* " " with positive flow control */
200 #define BAS_LOWFRAME 5 /* " " with negative flow control */
201 #define BAS_CORRFRAMES 4 /* flow control multiplicator */
203 #define BAS_INBUFSIZE (BAS_MAXFRAME * BAS_NUMFRAMES)
204 /* size of isoc in buf per URB */
205 #define BAS_OUTBUFSIZE 4096 /* size of common isoc out buffer */
206 #define BAS_OUTBUFPAD BAS_MAXFRAME /* size of pad area for isoc out buf */
209 #define BAS_OUTURBS 3
211 /* variable commands in struct bc_state */
221 /* variables in struct at_state_t */
235 #define EV_TIMEOUT -105
236 #define EV_IF_VER -106
237 #define EV_PROC_CIDMODE -107
238 #define EV_SHUTDOWN -108
239 #define EV_START -110
241 #define EV_IF_LOCK -112
242 #define EV_PROTO_L2 -113
243 #define EV_ACCEPT -114
246 #define EV_BC_OPEN -117
247 #define EV_BC_CLOSED -118
250 #define INS_command 0x0001
251 #define INS_DLE_char 0x0002
252 #define INS_byte_stuff 0x0004
253 #define INS_have_data 0x0008
254 #define INS_skip_frame 0x0010
255 #define INS_DLE_command 0x0020
256 #define INS_flag_hunt 0x0040
259 #define CHS_D_UP 0x01
260 #define CHS_B_UP 0x02
261 #define CHS_NOTIFY_LL 0x04
263 #define ICALL_REJECT 0
264 #define ICALL_ACCEPT 1
265 #define ICALL_IGNORE 2
268 #define MS_UNINITIALIZED 0
271 #define MS_SHUTDOWN 3
283 #define SM_ISDN 1 /* default */
286 struct gigaset_driver;
288 struct usb_cardstate;
289 struct ser_cardstate;
290 struct bas_cardstate;
298 int resp_code; /* RSP_XXXX */
299 int min_ConState; /* <0 => ignore */
300 int max_ConState; /* <0 => ignore */
301 int parameter; /* e.g. ZSAU_XXXX <0: ignore*/
302 int new_ConState; /* <0 => ignore */
303 int timeout; /* >0 => *HZ; <=0 => TOUT_XXXX*/
304 int action[MAXACT]; /* ACT_XXXX */
305 char *command; /* NULL==none */
308 extern struct reply_t gigaset_tab_cid_m10x[];
309 extern struct reply_t gigaset_tab_nocid_m10x[];
312 unsigned char *rcvbuf; /* usb-gigaset receive buffer */
313 struct bc_state *bcs;
314 struct cardstate *cs;
317 unsigned char data[RBUFSIZE];
320 /* isochronous write buffer structure
321 * circular buffer with pad area for extraction of complete USB frames
322 * - data[read..nextread-1] is valid data already submitted to the USB subsystem
323 * - data[nextread..write-1] is valid data yet to be sent
324 * - data[write] is the next byte to write to
325 * - in byte-oriented L2 procotols, it is completely free
326 * - in bit-oriented L2 procotols, it may contain a partial byte of valid data
327 * - data[write+1..read-1] is free
328 * - wbits is the number of valid data bits in data[write], starting at the LSB
329 * - writesem is the semaphore for writing to the buffer:
330 * if writesem <= 0, data[write..read-1] is currently being written to
331 * - idle contains the byte value to repeat when the end of valid data is
332 * reached; if nextread==write (buffer contains no data to send), either the
333 * BAS_OUTBUFPAD bytes immediately before data[write] (if
334 * write>=BAS_OUTBUFPAD) or those of the pad area (if write<BAS_OUTBUFPAD)
335 * are also filled with that value
343 unsigned char data[BAS_OUTBUFSIZE + BAS_OUTBUFPAD];
347 /* isochronous write URB context structure
348 * data to be stored along with the URB and retrieved when it is returned
349 * as completed by the USB subsystem
350 * - urb: pointer to the URB itself
351 * - bcs: pointer to the B Channel control structure
352 * - limit: end of write buffer area covered by this URB
353 * - status: URB completion status
355 struct isow_urbctx_t {
357 struct bc_state *bcs;
362 /* AT state structure
363 * data associated with the state of an ISDN connection, whether or not
364 * it is currently assigned a B channel
367 struct list_head list;
370 unsigned timer_index;
371 unsigned long timer_expires;
373 unsigned int ConState; /* State of connection */
374 struct reply_t *replystruct;
376 int int_var[VAR_NUM]; /* see VAR_XXXX */
377 char *str_var[STR_NUM]; /* see STR_XXXX */
378 unsigned pending_commands; /* see PC_XXXX */
381 struct cardstate *cs;
382 struct bc_state *bcs;
386 unsigned char *response;
387 int resp_code; /* RSP_XXXX */
388 int type; /* RT_XXXX */
396 struct at_state_t *at_state;
399 /* This buffer holds all information about the used B-Channel */
401 struct sk_buff *tx_skb; /* Current transfer buffer to modem */
402 struct sk_buff_head squeue; /* B-Channel send Queue */
404 /* Variables for debugging .. */
405 int corrupted; /* Counter for corrupted packages */
406 int trans_down; /* Counter of packages (downstream) */
407 int trans_up; /* Counter of packages (upstream) */
409 struct at_state_t at_state;
410 unsigned long rcvbytes;
414 int inputstate; /* see INS_XXXX */
418 struct cardstate *cs;
420 unsigned chstate; /* bitmap (CHS_*) */
422 unsigned proto2; /* Layer 2 protocol (ISDN_PROTO_L2_*) */
423 char *commands[AT_NUM]; /* see AT_XXXX */
425 #ifdef CONFIG_GIGASET_DEBUG
431 /* private data of hardware drivers */
433 struct ser_bc_state *ser; /* serial hardware driver */
434 struct usb_bc_state *usb; /* usb hardware driver (m105) */
435 struct bas_bc_state *bas; /* usb hardware driver (base) */
440 struct gigaset_driver *driver;
441 unsigned minor_index;
443 struct device *tty_dev;
445 const struct gigaset_ops *ops;
447 /* Stuff to handle communication */
448 wait_queue_head_t waitqueue;
450 atomic_t mode; /* see M_XXXX */
451 atomic_t mstate; /* Modem state: see MS_XXXX */
452 /* only changed by the event layer */
456 struct bc_state *bcs; /* Array of struct bc_state */
458 int onechannel; /* data and commands transmitted in one
462 struct at_state_t at_state; /* at_state_t for cid == 0 */
463 struct list_head temp_at_states;/* list of temporary "struct
464 at_state_t"s without B channel */
466 struct inbuf_t *inbuf;
468 struct cmdbuf_t *cmdbuf, *lastcmdbuf;
470 unsigned curlen, cmdbytes;
473 struct tty_struct *tty;
474 struct tasklet_struct if_wake_tasklet;
475 unsigned control_state;
480 unsigned running; /* !=0 if events are handled */
481 unsigned connected; /* !=0 if hardware is connected */
482 unsigned isdn_up; /* !=0 after ISDN_STAT_RUN */
486 int myid; /* id for communication with LL */
489 struct reply_t *tabnocid;
490 struct reply_t *tabcid;
492 int ignoreframes; /* frames to ignore after setting up the
494 struct mutex mutex; /* locks this structure:
495 * connected is not changed,
496 * hardware_up is not changed,
497 * MState is not changed to or from
500 struct timer_list timer;
502 int dle; /* !=0 if modem commands/responses are
504 int cur_at_seq; /* sequence of AT commands being
506 int curchannel; /* channel those commands are meant
508 atomic_t commands_pending; /* flag(s) in xxx.commands_pending have
510 struct tasklet_struct event_tasklet;
511 /* tasklet for serializing AT commands.
513 * -> for modem reponses (and
514 * incoming data for M10x)
516 * -> after setting bits in
517 * xxx.at_state.pending_command
518 * (e.g. command from LL) */
519 struct tasklet_struct write_tasklet;
520 /* tasklet for serial output
521 * (not used in base driver) */
524 struct event_t events[MAX_EVENTS];
525 unsigned ev_tail, ev_head;
528 /* current modem response */
529 unsigned char respdata[MAX_RESP_SIZE];
532 /* private data of hardware drivers */
534 struct usb_cardstate *usb; /* USB hardware driver (m105) */
535 struct ser_cardstate *ser; /* serial hardware driver */
536 struct bas_cardstate *bas; /* USB hardware driver (base) */
540 struct gigaset_driver {
541 struct list_head list;
542 spinlock_t lock; /* locks minor tables and blocked */
543 struct tty_driver *tty;
547 struct cardstate *cs;
551 const struct gigaset_ops *ops;
552 struct module *owner;
556 struct cmdbuf_t *next, *prev;
558 struct tasklet_struct *wake_tasklet;
559 unsigned char buf[0];
562 struct bas_bc_state {
563 /* isochronous output state */
566 spinlock_t isooutlock;
567 struct isow_urbctx_t isoouturbs[BAS_OUTURBS];
568 struct isow_urbctx_t *isooutdone, *isooutfree, *isooutovfl;
569 struct isowbuf_t *isooutbuf;
570 unsigned numsub; /* submitted URB counter
571 (for diagnostic messages only) */
572 struct tasklet_struct sent_tasklet;
574 /* isochronous input state */
575 spinlock_t isoinlock;
576 struct urb *isoinurbs[BAS_INURBS];
577 unsigned char isoinbuf[BAS_INBUFSIZE * BAS_INURBS];
578 struct urb *isoindone; /* completed isoc read URB */
579 int isoinstatus; /* status of completed URB */
580 int loststatus; /* status of dropped URB */
581 unsigned isoinlost; /* number of bytes lost */
582 /* state of bit unstuffing algorithm
583 (in addition to BC_state.inputstate) */
584 unsigned seqlen; /* number of '1' bits not yet
586 unsigned inbyte, inbits; /* collected bits for next byte */
588 unsigned goodbytes; /* bytes correctly received */
589 unsigned alignerrs; /* frames with incomplete byte at end */
590 unsigned fcserrs; /* FCS errors */
591 unsigned frameerrs; /* framing errors */
592 unsigned giants; /* long frames */
593 unsigned runts; /* short frames */
594 unsigned aborts; /* HDLC aborts */
595 unsigned shared0s; /* '0' bits shared between flags */
596 unsigned stolen0s; /* '0' stuff bits also serving as
598 struct tasklet_struct rcvd_tasklet;
602 /* Called from ev-layer.c/interface.c for sending AT commands to the
604 int (*write_cmd)(struct cardstate *cs,
605 const unsigned char *buf, int len,
606 struct tasklet_struct *wake_tasklet);
608 /* Called from interface.c for additional device control */
609 int (*write_room)(struct cardstate *cs);
610 int (*chars_in_buffer)(struct cardstate *cs);
611 int (*brkchars)(struct cardstate *cs, const unsigned char buf[6]);
613 /* Called from ev-layer.c after setting up connection
614 * Should call gigaset_bchannel_up(), when finished. */
615 int (*init_bchannel)(struct bc_state *bcs);
617 /* Called from ev-layer.c after hanging up
618 * Should call gigaset_bchannel_down(), when finished. */
619 int (*close_bchannel)(struct bc_state *bcs);
621 /* Called by gigaset_initcs() for setting up bcs->hw.xxx */
622 int (*initbcshw)(struct bc_state *bcs);
624 /* Called by gigaset_freecs() for freeing bcs->hw.xxx */
625 int (*freebcshw)(struct bc_state *bcs);
627 /* Called by gigaset_bchannel_down() for resetting bcs->hw.xxx */
628 void (*reinitbcshw)(struct bc_state *bcs);
630 /* Called by gigaset_initcs() for setting up cs->hw.xxx */
631 int (*initcshw)(struct cardstate *cs);
633 /* Called by gigaset_freecs() for freeing cs->hw.xxx */
634 void (*freecshw)(struct cardstate *cs);
636 /* Called from common.c/interface.c for additional serial port
638 int (*set_modem_ctrl)(struct cardstate *cs, unsigned old_state,
640 int (*baud_rate)(struct cardstate *cs, unsigned cflag);
641 int (*set_line_ctrl)(struct cardstate *cs, unsigned cflag);
643 /* Called from i4l.c to put an skb into the send-queue. */
644 int (*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 (*handle_input)(struct inbuf_t *inbuf);
652 /* = Common structures and definitions ======================================= */
654 /* Parser states for DLE-Event:
655 * <DLE-EVENT>: <DLE_FLAG> "X" <EVENT> <DLE_FLAG> "."
657 * <EVENT>: ((a-z)* | (A-Z)* | (0-10)*)+
659 #define DLE_FLAG 0x10
661 /* ===========================================================================
662 * Functions implemented in asyncdata.c
665 /* Called from i4l.c to put an skb into the send-queue.
666 * After sending gigaset_skb_sent() should be called. */
667 int gigaset_m10x_send_skb(struct bc_state *bcs, struct sk_buff *skb);
669 /* Called from ev-layer.c to process a block of data
670 * received through the common/control channel. */
671 void gigaset_m10x_input(struct inbuf_t *inbuf);
673 /* ===========================================================================
674 * Functions implemented in isocdata.c
677 /* Called from i4l.c to put an skb into the send-queue.
678 * After sending gigaset_skb_sent() should be called. */
679 int gigaset_isoc_send_skb(struct bc_state *bcs, struct sk_buff *skb);
681 /* Called from ev-layer.c to process a block of data
682 * received through the common/control channel. */
683 void gigaset_isoc_input(struct inbuf_t *inbuf);
685 /* Called from bas-gigaset.c to process a block of data
686 * received through the isochronous channel */
687 void gigaset_isoc_receive(unsigned char *src, unsigned count,
688 struct bc_state *bcs);
690 /* Called from bas-gigaset.c to put a block of data
691 * into the isochronous output buffer */
692 int gigaset_isoc_buildframe(struct bc_state *bcs, unsigned char *in, int len);
694 /* Called from bas-gigaset.c to initialize the isochronous output buffer */
695 void gigaset_isowbuf_init(struct isowbuf_t *iwb, unsigned char idle);
697 /* Called from bas-gigaset.c to retrieve a block of bytes for sending */
698 int gigaset_isowbuf_getbytes(struct isowbuf_t *iwb, int size);
700 /* ===========================================================================
701 * Functions implemented in i4l.c/gigaset.h
704 /* Called by gigaset_initcs() for setting up with the isdn4linux subsystem */
705 int gigaset_register_to_LL(struct cardstate *cs, const char *isdnid);
707 /* Called from xxx-gigaset.c to indicate completion of sending an skb */
708 void gigaset_skb_sent(struct bc_state *bcs, struct sk_buff *skb);
710 /* Called from common.c/ev-layer.c to indicate events relevant to the LL */
711 int gigaset_isdn_icall(struct at_state_t *at_state);
712 int gigaset_isdn_setup_accept(struct at_state_t *at_state);
713 int gigaset_isdn_setup_dial(struct at_state_t *at_state, void *data);
715 void gigaset_i4l_cmd(struct cardstate *cs, int cmd);
716 void gigaset_i4l_channel_cmd(struct bc_state *bcs, int cmd);
719 static inline void gigaset_isdn_rcv_err(struct bc_state *bcs)
724 gig_dbg(DEBUG_CMD, "sending L1ERR");
725 response.driver = bcs->cs->myid;
726 response.command = ISDN_STAT_L1ERR;
727 response.arg = bcs->channel;
728 response.parm.errcode = ISDN_STAT_L1ERR_RECV;
729 bcs->cs->iif.statcallb(&response);
732 /* ===========================================================================
733 * Functions implemented in ev-layer.c
736 /* tasklet called from common.c to process queued events */
737 void gigaset_handle_event(unsigned long data);
739 /* called from isocdata.c / asyncdata.c
740 * when a complete modem response line has been received */
741 void gigaset_handle_modem_response(struct cardstate *cs);
743 /* ===========================================================================
744 * Functions implemented in proc.c
747 /* initialize sysfs for device */
748 void gigaset_init_dev_sysfs(struct cardstate *cs);
749 void gigaset_free_dev_sysfs(struct cardstate *cs);
751 /* ===========================================================================
752 * Functions implemented in common.c/gigaset.h
755 void gigaset_bcs_reinit(struct bc_state *bcs);
756 void gigaset_at_init(struct at_state_t *at_state, struct bc_state *bcs,
757 struct cardstate *cs, int cid);
758 int gigaset_get_channel(struct bc_state *bcs);
759 void gigaset_free_channel(struct bc_state *bcs);
760 int gigaset_get_channels(struct cardstate *cs);
761 void gigaset_free_channels(struct cardstate *cs);
762 void gigaset_block_channels(struct cardstate *cs);
764 /* Allocate and initialize driver structure. */
765 struct gigaset_driver *gigaset_initdriver(unsigned minor, unsigned minors,
766 const char *procname,
768 const struct gigaset_ops *ops,
769 struct module *owner);
771 /* Deallocate driver structure. */
772 void gigaset_freedriver(struct gigaset_driver *drv);
773 void gigaset_debugdrivers(void);
774 struct cardstate *gigaset_get_cs_by_tty(struct tty_struct *tty);
775 struct cardstate *gigaset_get_cs_by_id(int id);
777 /* For drivers without fixed assignment device<->cardstate (usb) */
778 struct cardstate *gigaset_getunassignedcs(struct gigaset_driver *drv);
779 void gigaset_unassign(struct cardstate *cs);
780 void gigaset_blockdriver(struct gigaset_driver *drv);
782 /* Allocate and initialize card state. Calls hardware dependent
783 gigaset_init[b]cs(). */
784 struct cardstate *gigaset_initcs(struct gigaset_driver *drv, int channels,
785 int onechannel, int ignoreframes,
786 int cidmode, const char *modulename);
788 /* Free card state. Calls hardware dependent gigaset_free[b]cs(). */
789 void gigaset_freecs(struct cardstate *cs);
791 /* Tell common.c that hardware and driver are ready. */
792 int gigaset_start(struct cardstate *cs);
794 /* Tell common.c that the device is not present any more. */
795 void gigaset_stop(struct cardstate *cs);
797 /* Tell common.c that the driver is being unloaded. */
798 void gigaset_shutdown(struct cardstate *cs);
800 /* Tell common.c that an skb has been sent. */
801 void gigaset_skb_sent(struct bc_state *bcs, struct sk_buff *skb);
803 /* Append event to the queue.
804 * Returns NULL on failure or a pointer to the event on success.
805 * ptr must be kmalloc()ed (and not be freed by the caller).
807 struct event_t *gigaset_add_event(struct cardstate *cs,
808 struct at_state_t *at_state, int type,
809 void *ptr, int parameter, void *arg);
811 /* Called on CONFIG1 command from frontend. */
812 int gigaset_enterconfigmode(struct cardstate *cs); //0: success <0: errorcode
814 /* cs->lock must not be locked */
815 static inline void gigaset_schedule_event(struct cardstate *cs)
818 spin_lock_irqsave(&cs->lock, flags);
820 tasklet_schedule(&cs->event_tasklet);
821 spin_unlock_irqrestore(&cs->lock, flags);
824 /* Tell common.c that B channel has been closed. */
825 /* cs->lock must not be locked */
826 static inline void gigaset_bchannel_down(struct bc_state *bcs)
828 gigaset_add_event(bcs->cs, &bcs->at_state, EV_BC_CLOSED, NULL, 0, NULL);
830 gig_dbg(DEBUG_CMD, "scheduling BC_CLOSED");
831 gigaset_schedule_event(bcs->cs);
834 /* Tell common.c that B channel has been opened. */
835 /* cs->lock must not be locked */
836 static inline void gigaset_bchannel_up(struct bc_state *bcs)
838 gigaset_add_event(bcs->cs, &bcs->at_state, EV_BC_OPEN, NULL, 0, NULL);
840 gig_dbg(DEBUG_CMD, "scheduling BC_OPEN");
841 gigaset_schedule_event(bcs->cs);
844 /* handling routines for sk_buff */
845 /* ============================= */
847 /* pass received skb to LL
848 * Warning: skb must not be accessed anymore!
850 static inline void gigaset_rcv_skb(struct sk_buff *skb,
851 struct cardstate *cs,
852 struct bc_state *bcs)
854 cs->iif.rcvcallb_skb(cs->myid, bcs->channel, skb);
858 /* handle reception of corrupted skb
859 * Warning: skb must not be accessed anymore!
861 static inline void gigaset_rcv_error(struct sk_buff *procskb,
862 struct cardstate *cs,
863 struct bc_state *bcs)
866 dev_kfree_skb(procskb);
872 gigaset_isdn_rcv_err(bcs);
876 /* append received bytes to inbuf */
877 int gigaset_fill_inbuf(struct inbuf_t *inbuf, const unsigned char *src,
880 /* ===========================================================================
881 * Functions implemented in interface.c
884 /* initialize interface */
885 void gigaset_if_initdriver(struct gigaset_driver *drv, const char *procname,
886 const char *devname);
887 /* release interface */
888 void gigaset_if_freedriver(struct gigaset_driver *drv);
890 void gigaset_if_init(struct cardstate *cs);
892 void gigaset_if_free(struct cardstate *cs);
893 /* device received data */
894 void gigaset_if_receive(struct cardstate *cs,
895 unsigned char *buffer, size_t len);