diff options
Diffstat (limited to 'drivers/isdn/gigaset/gigaset.h')
| -rw-r--r-- | drivers/isdn/gigaset/gigaset.h | 884 |
1 files changed, 884 insertions, 0 deletions
diff --git a/drivers/isdn/gigaset/gigaset.h b/drivers/isdn/gigaset/gigaset.h new file mode 100644 index 0000000..0037529 --- /dev/null +++ b/drivers/isdn/gigaset/gigaset.h @@ -0,0 +1,884 @@ +/* + * Siemens Gigaset 307x driver + * Common header file for all connection variants + * + * Written by Stefan Eilers + * and Hansjoerg Lipp <hjlipp@web.de> + * + * ===================================================================== + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * ===================================================================== + */ + +#ifndef GIGASET_H +#define GIGASET_H + +#include <linux/kernel.h> +#include <linux/compiler.h> +#include <linux/types.h> +#include <linux/spinlock.h> +#include <linux/isdnif.h> +#include <linux/usb.h> +#include <linux/skbuff.h> +#include <linux/netdevice.h> +#include <linux/ppp_defs.h> +#include <linux/timer.h> +#include <linux/interrupt.h> +#include <linux/tty.h> +#include <linux/tty_driver.h> +#include <linux/list.h> +#include <asm/atomic.h> + +#define GIG_VERSION {0,5,0,0} +#define GIG_COMPAT {0,4,0,0} + +#define MAX_REC_PARAMS 10 /* Max. number of params in response string */ +#define MAX_RESP_SIZE 512 /* Max. size of a response string */ +#define HW_HDR_LEN 2 /* Header size used to store ack info */ + +#define MAX_EVENTS 64 /* size of event queue */ + +#define RBUFSIZE 8192 +#define SBUFSIZE 4096 /* sk_buff payload size */ + +#define TRANSBUFSIZE 768 /* bytes per skb for transparent receive */ +#define MAX_BUF_SIZE (SBUFSIZE - 2) /* Max. size of a data packet from LL */ + +/* compile time options */ +#define GIG_MAJOR 0 + +#define GIG_MAYINITONDIAL +#define GIG_RETRYCID +#define GIG_X75 + +#define GIG_TICK 100 /* in milliseconds */ + +/* timeout values (unit: 1 sec) */ +#define INIT_TIMEOUT 1 + +/* timeout values (unit: 0.1 sec) */ +#define RING_TIMEOUT 3 /* for additional parameters to RING */ +#define BAS_TIMEOUT 20 /* for response to Base USB ops */ +#define ATRDY_TIMEOUT 3 /* for HD_READY_SEND_ATDATA */ + +#define BAS_RETRY 3 /* max. retries for base USB ops */ + +#define MAXACT 3 + +extern int gigaset_debuglevel; /* "needs" cast to (enum debuglevel) */ + +/* debug flags, combine by adding/bitwise OR */ +enum debuglevel { + DEBUG_INTR = 0x00008, /* interrupt processing */ + DEBUG_CMD = 0x00020, /* sent/received LL commands */ + DEBUG_STREAM = 0x00040, /* application data stream I/O events */ + DEBUG_STREAM_DUMP = 0x00080, /* application data stream content */ + DEBUG_LLDATA = 0x00100, /* sent/received LL data */ + DEBUG_DRIVER = 0x00400, /* driver structure */ + DEBUG_HDLC = 0x00800, /* M10x HDLC processing */ + DEBUG_WRITE = 0x01000, /* M105 data write */ + DEBUG_TRANSCMD = 0x02000, /* AT-COMMANDS+RESPONSES */ + DEBUG_MCMD = 0x04000, /* COMMANDS THAT ARE SENT VERY OFTEN */ + DEBUG_INIT = 0x08000, /* (de)allocation+initialization of data + structures */ + DEBUG_SUSPEND = 0x10000, /* suspend/resume processing */ + DEBUG_OUTPUT = 0x20000, /* output to device */ + DEBUG_ISO = 0x40000, /* isochronous transfers */ + DEBUG_IF = 0x80000, /* character device operations */ + DEBUG_USBREQ = 0x100000, /* USB communication (except payload + data) */ + DEBUG_LOCKCMD = 0x200000, /* AT commands and responses when + MS_LOCKED */ + + DEBUG_ANY = 0x3fffff, /* print message if any of the others is + activated */ +}; + +/* Kernel message macros for situations where dev_printk and friends cannot be + * used for lack of reliable access to a device structure. + * linux/usb.h already contains these but in an obsolete form which clutters + * the log needlessly, and according to the USB maintainer those should be + * removed rather than fixed anyway. + */ +#undef err +#undef info +#undef warn + +#define err(format, arg...) printk(KERN_ERR KBUILD_MODNAME ": " \ + format "\n" , ## arg) +#define info(format, arg...) printk(KERN_INFO KBUILD_MODNAME ": " \ + format "\n" , ## arg) +#define warn(format, arg...) printk(KERN_WARNING KBUILD_MODNAME ": " \ + format "\n" , ## arg) + +#ifdef CONFIG_GIGASET_DEBUG + +#define gig_dbg(level, format, arg...) \ + do { \ + if (unlikely(((enum debuglevel)gigaset_debuglevel) & (level))) \ + printk(KERN_DEBUG KBUILD_MODNAME ": " format "\n", \ + ## arg); \ + } while (0) +#define DEBUG_DEFAULT (DEBUG_TRANSCMD | DEBUG_CMD | DEBUG_USBREQ) + +#else + +#define gig_dbg(level, format, arg...) do {} while (0) +#define DEBUG_DEFAULT 0 + +#endif + +void gigaset_dbg_buffer(enum debuglevel level, const unsigned char *msg, + size_t len, const unsigned char *buf); + +/* connection state */ +#define ZSAU_NONE 0 +#define ZSAU_DISCONNECT_IND 4 +#define ZSAU_OUTGOING_CALL_PROCEEDING 1 +#define ZSAU_PROCEEDING 1 +#define ZSAU_CALL_DELIVERED 2 +#define ZSAU_ACTIVE 3 +#define ZSAU_NULL 5 +#define ZSAU_DISCONNECT_REQ 6 +#define ZSAU_UNKNOWN -1 + +/* USB control transfer requests */ +#define OUT_VENDOR_REQ (USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT) +#define IN_VENDOR_REQ (USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT) + +/* int-in-events 3070 */ +#define HD_B1_FLOW_CONTROL 0x80 +#define HD_B2_FLOW_CONTROL 0x81 +#define HD_RECEIVEATDATA_ACK (0x35) // 3070 + // att: HD_RECEIVE>>AT<<DATA_ACK +#define HD_READY_SEND_ATDATA (0x36) // 3070 +#define HD_OPEN_ATCHANNEL_ACK (0x37) // 3070 +#define HD_CLOSE_ATCHANNEL_ACK (0x38) // 3070 +#define HD_DEVICE_INIT_OK (0x11) // ISurf USB + 3070 +#define HD_OPEN_B1CHANNEL_ACK (0x51) // ISurf USB + 3070 +#define HD_OPEN_B2CHANNEL_ACK (0x52) // ISurf USB + 3070 +#define HD_CLOSE_B1CHANNEL_ACK (0x53) // ISurf USB + 3070 +#define HD_CLOSE_B2CHANNEL_ACK (0x54) // ISurf USB + 3070 +// Powermangment +#define HD_SUSPEND_END (0x61) // ISurf USB +// Configuration +#define HD_RESET_INTERRUPT_PIPE_ACK (0xFF) // ISurf USB + 3070 + +/* control requests 3070 */ +#define HD_OPEN_B1CHANNEL (0x23) // ISurf USB + 3070 +#define HD_CLOSE_B1CHANNEL (0x24) // ISurf USB + 3070 +#define HD_OPEN_B2CHANNEL (0x25) // ISurf USB + 3070 +#define HD_CLOSE_B2CHANNEL (0x26) // ISurf USB + 3070 +#define HD_RESET_INTERRUPT_PIPE (0x27) // ISurf USB + 3070 +#define HD_DEVICE_INIT_ACK (0x34) // ISurf USB + 3070 +#define HD_WRITE_ATMESSAGE (0x12) // 3070 +#define HD_READ_ATMESSAGE (0x13) // 3070 +#define HD_OPEN_ATCHANNEL (0x28) // 3070 +#define HD_CLOSE_ATCHANNEL (0x29) // 3070 + +/* number of B channels supported by base driver */ +#define BAS_CHANNELS 2 + +/* USB frames for isochronous transfer */ +#define BAS_FRAMETIME 1 /* number of milliseconds between frames */ +#define BAS_NUMFRAMES 8 /* number of frames per URB */ +#define BAS_MAXFRAME 16 /* allocated bytes per frame */ +#define BAS_NORMFRAME 8 /* send size without flow control */ +#define BAS_HIGHFRAME 10 /* " " with positive flow control */ +#define BAS_LOWFRAME 5 /* " " with negative flow control */ +#define BAS_CORRFRAMES 4 /* flow control multiplicator */ + +#define BAS_INBUFSIZE (BAS_MAXFRAME * BAS_NUMFRAMES) + /* size of isoc in buf per URB */ +#define BAS_OUTBUFSIZE 4096 /* size of common isoc out buffer */ +#define BAS_OUTBUFPAD BAS_MAXFRAME /* size of pad area for isoc out buf */ + +#define BAS_INURBS 3 +#define BAS_OUTURBS 3 + +/* variable commands in struct bc_state */ +#define AT_ISO 0 +#define AT_DIAL 1 +#define AT_MSN 2 +#define AT_BC 3 +#define AT_PROTO 4 +#define AT_TYPE 5 +#define AT_HLC 6 +#define AT_NUM 7 + +/* variables in struct at_state_t */ +#define VAR_ZSAU 0 +#define VAR_ZDLE 1 +#define VAR_ZVLS 2 +#define VAR_ZCTP 3 +#define VAR_NUM 4 + +#define STR_NMBR 0 +#define STR_ZCPN 1 +#define STR_ZCON 2 +#define STR_ZBC 3 +#define STR_ZHLC 4 +#define STR_NUM 5 + +#define EV_TIMEOUT -105 +#define EV_IF_VER -106 +#define EV_PROC_CIDMODE -107 +#define EV_SHUTDOWN -108 +#define EV_START -110 +#define EV_STOP -111 +#define EV_IF_LOCK -112 +#define EV_PROTO_L2 -113 +#define EV_ACCEPT -114 +#define EV_DIAL -115 +#define EV_HUP -116 +#define EV_BC_OPEN -117 +#define EV_BC_CLOSED -118 + +/* input state */ +#define INS_command 0x0001 +#define INS_DLE_char 0x0002 +#define INS_byte_stuff 0x0004 +#define INS_have_data 0x0008 +#define INS_skip_frame 0x0010 +#define INS_DLE_command 0x0020 +#define INS_flag_hunt 0x0040 + +/* channel state */ +#define CHS_D_UP 0x01 +#define CHS_B_UP 0x02 +#define CHS_NOTIFY_LL 0x04 + +#define ICALL_REJECT 0 +#define ICALL_ACCEPT 1 +#define ICALL_IGNORE 2 + +/* device state */ +#define MS_UNINITIALIZED 0 +#define MS_INIT 1 +#define MS_LOCKED 2 +#define MS_SHUTDOWN 3 +#define MS_RECOVER 4 +#define MS_READY 5 + +/* mode */ +#define M_UNKNOWN 0 +#define M_CONFIG 1 +#define M_UNIMODEM 2 +#define M_CID 3 + +/* start mode */ +#define SM_LOCKED 0 +#define SM_ISDN 1 /* default */ + +struct gigaset_ops; +struct gigaset_driver; + +struct usb_cardstate; +struct ser_cardstate; +struct bas_cardstate; + +struct bc_state; +struct usb_bc_state; +struct ser_bc_state; +struct bas_bc_state; + +struct reply_t { + int resp_code; /* RSP_XXXX */ + int min_ConState; /* <0 => ignore */ + int max_ConState; /* <0 => ignore */ + int parameter; /* e.g. ZSAU_XXXX <0: ignore*/ + int new_ConState; /* <0 => ignore */ + int timeout; /* >0 => *HZ; <=0 => TOUT_XXXX*/ + int action[MAXACT]; /* ACT_XXXX */ + char *command; /* NULL==none */ +}; + +extern struct reply_t gigaset_tab_cid_m10x[]; +extern struct reply_t gigaset_tab_nocid_m10x[]; + +struct inbuf_t { + unsigned char *rcvbuf; /* usb-gigaset receive buffer */ + struct bc_state *bcs; + struct cardstate *cs; + int inputstate; + int head, tail; + unsigned char data[RBUFSIZE]; +}; + +/* isochronous write buffer structure + * circular buffer with pad area for extraction of complete USB frames + * - data[read..nextread-1] is valid data already submitted to the USB subsystem + * - data[nextread..write-1] is valid data yet to be sent + * - data[write] is the next byte to write to + * - in byte-oriented L2 procotols, it is completely free + * - in bit-oriented L2 procotols, it may contain a partial byte of valid data + * - data[write+1..read-1] is free + * - wbits is the number of valid data bits in data[write], starting at the LSB + * - writesem is the semaphore for writing to the buffer: + * if writesem <= 0, data[write..read-1] is currently being written to + * - idle contains the byte value to repeat when the end of valid data is + * reached; if nextread==write (buffer contains no data to send), either the + * BAS_OUTBUFPAD bytes immediately before data[write] (if + * write>=BAS_OUTBUFPAD) or those of the pad area (if write<BAS_OUTBUFPAD) + * are also filled with that value + */ +struct isowbuf_t { + int read; + int nextread; + int write; + atomic_t writesem; + int wbits; + unsigned char data[BAS_OUTBUFSIZE + BAS_OUTBUFPAD]; + unsigned char idle; +}; + +/* isochronous write URB context structure + * data to be stored along with the URB and retrieved when it is returned + * as completed by the USB subsystem + * - urb: pointer to the URB itself + * - bcs: pointer to the B Channel control structure + * - limit: end of write buffer area covered by this URB + * - status: URB completion status + */ +struct isow_urbctx_t { + struct urb *urb; + struct bc_state *bcs; + int limit; + int status; +}; + +/* AT state structure + * data associated with the state of an ISDN connection, whether or not + * it is currently assigned a B channel + */ +struct at_state_t { + struct list_head list; + int waiting; + int getstring; + unsigned timer_index; + unsigned long timer_expires; + int timer_active; + unsigned int ConState; /* State of connection */ + struct reply_t *replystruct; + int cid; + int int_var[VAR_NUM]; /* see VAR_XXXX */ + char *str_var[STR_NUM]; /* see STR_XXXX */ + unsigned pending_commands; /* see PC_XXXX */ + unsigned seq_index; + + struct cardstate *cs; + struct bc_state *bcs; +}; + +struct resp_type_t { + unsigned char *response; + int resp_code; /* RSP_XXXX */ + int type; /* RT_XXXX */ +}; + +struct event_t { + int type; + void *ptr, *arg; + int parameter; + int cid; + struct at_state_t *at_state; +}; + +/* This buffer holds all information about the used B-Channel */ +struct bc_state { + struct sk_buff *tx_skb; /* Current transfer buffer to modem */ + struct sk_buff_head squeue; /* B-Channel send Queue */ + + /* Variables for debugging .. */ + int corrupted; /* Counter for corrupted packages */ + int trans_down; /* Counter of packages (downstream) */ + int trans_up; /* Counter of packages (upstream) */ + + struct at_state_t at_state; + unsigned long rcvbytes; + + __u16 fcs; + struct sk_buff *skb; + int inputstate; /* see INS_XXXX */ + + int channel; + + struct cardstate *cs; + + unsigned chstate; /* bitmap (CHS_*) */ + int ignore; + unsigned proto2; /* Layer 2 protocol (ISDN_PROTO_L2_*) */ + char *commands[AT_NUM]; /* see AT_XXXX */ + +#ifdef CONFIG_GIGASET_DEBUG + int emptycount; +#endif + int busy; + int use_count; + + /* private data of hardware drivers */ + union { + struct ser_bc_state *ser; /* serial hardware driver */ + struct usb_bc_state *usb; /* usb hardware driver (m105) */ + struct bas_bc_state *bas; /* usb hardware driver (base) */ + } hw; +}; + +struct cardstate { + struct gigaset_driver *driver; + unsigned minor_index; + struct device *dev; + struct device *tty_dev; + unsigned flags; + + const struct gigaset_ops *ops; + + /* Stuff to handle communication */ + wait_queue_head_t waitqueue; + int waiting; + int mode; /* see M_XXXX */ + int mstate; /* Modem state: see MS_XXXX */ + /* only changed by the event layer */ + int cmd_result; + + int channels; + struct bc_state *bcs; /* Array of struct bc_state */ + + int onechannel; /* data and commands transmitted in one + stream (M10x) */ + + spinlock_t lock; + struct at_state_t at_state; /* at_state_t for cid == 0 */ + struct list_head temp_at_states;/* list of temporary "struct + at_state_t"s without B channel */ + + struct inbuf_t *inbuf; + + struct cmdbuf_t *cmdbuf, *lastcmdbuf; + spinlock_t cmdlock; + unsigned curlen, cmdbytes; + + unsigned open_count; + struct tty_struct *tty; + struct tasklet_struct if_wake_tasklet; + unsigned control_state; + + unsigned fwver[4]; + int gotfwver; + + unsigned running; /* !=0 if events are handled */ + unsigned connected; /* !=0 if hardware is connected */ + unsigned isdn_up; /* !=0 after ISDN_STAT_RUN */ + + unsigned cidmode; + + int myid; /* id for communication with LL */ + isdn_if iif; + + struct reply_t *tabnocid; + struct reply_t *tabcid; + int cs_init; + int ignoreframes; /* frames to ignore after setting up the + B channel */ + struct mutex mutex; /* locks this structure: + * connected is not changed, + * hardware_up is not changed, + * MState is not changed to or from + * MS_LOCKED */ + + struct timer_list timer; + int retry_count; + int dle; /* !=0 if modem commands/responses are + dle encoded */ + int cur_at_seq; /* sequence of AT commands being + processed */ + int curchannel; /* channel those commands are meant + for */ + int commands_pending; /* flag(s) in xxx.commands_pending have + been set */ + struct tasklet_struct event_tasklet; + /* tasklet for serializing AT commands. + * Scheduled + * -> for modem reponses (and + * incoming data for M10x) + * -> on timeout + * -> after setting bits in + * xxx.at_state.pending_command + * (e.g. command from LL) */ + struct tasklet_struct write_tasklet; + /* tasklet for serial output + * (not used in base driver) */ + + /* event queue */ + struct event_t events[MAX_EVENTS]; + unsigned ev_tail, ev_head; + spinlock_t ev_lock; + + /* current modem response */ + unsigned char respdata[MAX_RESP_SIZE]; + unsigned cbytes; + + /* private data of hardware drivers */ + union { + struct usb_cardstate *usb; /* USB hardware driver (m105) */ + struct ser_cardstate *ser; /* serial hardware driver */ + struct bas_cardstate *bas; /* USB hardware driver (base) */ + } hw; +}; + +struct gigaset_driver { + struct list_head list; + spinlock_t lock; /* locks minor tables and blocked */ + struct tty_driver *tty; + unsigned have_tty; + unsigned minor; + unsigned minors; + struct cardstate *cs; + int blocked; + + const struct gigaset_ops *ops; + struct module *owner; +}; + +struct cmdbuf_t { + struct cmdbuf_t *next, *prev; + int len, offset; + struct tasklet_struct *wake_tasklet; + unsigned char buf[0]; +}; + +struct bas_bc_state { + /* isochronous output state */ + int running; + atomic_t corrbytes; + spinlock_t isooutlock; + struct isow_urbctx_t isoouturbs[BAS_OUTURBS]; + struct isow_urbctx_t *isooutdone, *isooutfree, *isooutovfl; + struct isowbuf_t *isooutbuf; + unsigned numsub; /* submitted URB counter + (for diagnostic messages only) */ + struct tasklet_struct sent_tasklet; + + /* isochronous input state */ + spinlock_t isoinlock; + struct urb *isoinurbs[BAS_INURBS]; + unsigned char isoinbuf[BAS_INBUFSIZE * BAS_INURBS]; + struct urb *isoindone; /* completed isoc read URB */ + int isoinstatus; /* status of completed URB */ + int loststatus; /* status of dropped URB */ + unsigned isoinlost; /* number of bytes lost */ + /* state of bit unstuffing algorithm + (in addition to BC_state.inputstate) */ + unsigned seqlen; /* number of '1' bits not yet + unstuffed */ + unsigned inbyte, inbits; /* collected bits for next byte */ + /* statistics */ + unsigned goodbytes; /* bytes correctly received */ + unsigned alignerrs; /* frames with incomplete byte at end */ + unsigned fcserrs; /* FCS errors */ + unsigned frameerrs; /* framing errors */ + unsigned giants; /* long frames */ + unsigned runts; /* short frames */ + unsigned aborts; /* HDLC aborts */ + unsigned shared0s; /* '0' bits shared between flags */ + unsigned stolen0s; /* '0' stuff bits also serving as + leading flag bits */ + struct tasklet_struct rcvd_tasklet; +}; + +struct gigaset_ops { + /* Called from ev-layer.c/interface.c for sending AT commands to the + device */ + int (*write_cmd)(struct cardstate *cs, + const unsigned char *buf, int len, + struct tasklet_struct *wake_tasklet); + + /* Called from interface.c for additional device control */ + int (*write_room)(struct cardstate *cs); + int (*chars_in_buffer)(struct cardstate *cs); + int (*brkchars)(struct cardstate *cs, const unsigned char buf[6]); + + /* Called from ev-layer.c after setting up connection + * Should call gigaset_bchannel_up(), when finished. */ + int (*init_bchannel)(struct bc_state *bcs); + + /* Called from ev-layer.c after hanging up + * Should call gigaset_bchannel_down(), when finished. */ + int (*close_bchannel)(struct bc_state *bcs); + + /* Called by gigaset_initcs() for setting up bcs->hw.xxx */ + int (*initbcshw)(struct bc_state *bcs); + + /* Called by gigaset_freecs() for freeing bcs->hw.xxx */ + int (*freebcshw)(struct bc_state *bcs); + + /* Called by gigaset_bchannel_down() for resetting bcs->hw.xxx */ + void (*reinitbcshw)(struct bc_state *bcs); + + /* Called by gigaset_initcs() for setting up cs->hw.xxx */ + int (*initcshw)(struct cardstate *cs); + + /* Called by gigaset_freecs() for freeing cs->hw.xxx */ + void (*freecshw)(struct cardstate *cs); + + /* Called from common.c/interface.c for additional serial port + control */ + int (*set_modem_ctrl)(struct cardstate *cs, unsigned old_state, + unsigned new_state); + int (*baud_rate)(struct cardstate *cs, unsigned cflag); + int (*set_line_ctrl)(struct cardstate *cs, unsigned cflag); + + /* Called from i4l.c to put an skb into the send-queue. */ + int (*send_skb)(struct bc_state *bcs, struct sk_buff *skb); + + /* Called from ev-layer.c to process a block of data + * received through the common/control channel. */ + void (*handle_input)(struct inbuf_t *inbuf); + +}; + +/* = Common structures and definitions ======================================= */ + +/* Parser states for DLE-Event: + * <DLE-EVENT>: <DLE_FLAG> "X" <EVENT> <DLE_FLAG> "." + * <DLE_FLAG>: 0x10 + * <EVENT>: ((a-z)* | (A-Z)* | (0-10)*)+ + */ +#define DLE_FLAG 0x10 + +/* =========================================================================== + * Functions implemented in asyncdata.c + */ + +/* Called from i4l.c to put an skb into the send-queue. + * After sending gigaset_skb_sent() should be called. */ +int gigaset_m10x_send_skb(struct bc_state *bcs, struct sk_buff *skb); + +/* Called from ev-layer.c to process a block of data + * received through the common/control channel. */ +void gigaset_m10x_input(struct inbuf_t *inbuf); + +/* =========================================================================== + * Functions implemented in isocdata.c + */ + +/* Called from i4l.c to put an skb into the send-queue. + * After sending gigaset_skb_sent() should be called. */ +int gigaset_isoc_send_skb(struct bc_state *bcs, struct sk_buff *skb); + +/* Called from ev-layer.c to process a block of data + * received through the common/control channel. */ +void gigaset_isoc_input(struct inbuf_t *inbuf); + +/* Called from bas-gigaset.c to process a block of data + * received through the isochronous channel */ +void gigaset_isoc_receive(unsigned char *src, unsigned count, + struct bc_state *bcs); + +/* Called from bas-gigaset.c to put a block of data + * into the isochronous output buffer */ +int gigaset_isoc_buildframe(struct bc_state *bcs, unsigned char *in, int len); + +/* Called from bas-gigaset.c to initialize the isochronous output buffer */ +void gigaset_isowbuf_init(struct isowbuf_t *iwb, unsigned char idle); + +/* Called from bas-gigaset.c to retrieve a block of bytes for sending */ +int gigaset_isowbuf_getbytes(struct isowbuf_t *iwb, int size); + +/* =========================================================================== + * Functions implemented in i4l.c/gigaset.h + */ + +/* Called by gigaset_initcs() for setting up with the isdn4linux subsystem */ +int gigaset_register_to_LL(struct cardstate *cs, const char *isdnid); + +/* Called from xxx-gigaset.c to indicate completion of sending an skb */ +void gigaset_skb_sent(struct bc_state *bcs, struct sk_buff *skb); + +/* Called from common.c/ev-layer.c to indicate events relevant to the LL */ +int gigaset_isdn_icall(struct at_state_t *at_state); +int gigaset_isdn_setup_accept(struct at_state_t *at_state); +int gigaset_isdn_setup_dial(struct at_state_t *at_state, void *data); + +void gigaset_i4l_cmd(struct cardstate *cs, int cmd); +void gigaset_i4l_channel_cmd(struct bc_state *bcs, int cmd); + + +static inline void gigaset_isdn_rcv_err(struct bc_state *bcs) +{ + isdn_ctrl response; + + /* error -> LL */ + gig_dbg(DEBUG_CMD, "sending L1ERR"); + response.driver = bcs->cs->myid; + response.command = ISDN_STAT_L1ERR; + response.arg = bcs->channel; + response.parm.errcode = ISDN_STAT_L1ERR_RECV; + bcs->cs->iif.statcallb(&response); +} + +/* =========================================================================== + * Functions implemented in ev-layer.c + */ + +/* tasklet called from common.c to process queued events */ +void gigaset_handle_event(unsigned long data); + +/* called from isocdata.c / asyncdata.c + * when a complete modem response line has been received */ +void gigaset_handle_modem_response(struct cardstate *cs); + +/* =========================================================================== + * Functions implemented in proc.c + */ + +/* initialize sysfs for device */ +void gigaset_init_dev_sysfs(struct cardstate *cs); +void gigaset_free_dev_sysfs(struct cardstate *cs); + +/* =========================================================================== + * Functions implemented in common.c/gigaset.h + */ + +void gigaset_bcs_reinit(struct bc_state *bcs); +void gigaset_at_init(struct at_state_t *at_state, struct bc_state *bcs, + struct cardstate *cs, int cid); +int gigaset_get_channel(struct bc_state *bcs); +void gigaset_free_channel(struct bc_state *bcs); +int gigaset_get_channels(struct cardstate *cs); +void gigaset_free_channels(struct cardstate *cs); +void gigaset_block_channels(struct cardstate *cs); + +/* Allocate and initialize driver structure. */ +struct gigaset_driver *gigaset_initdriver(unsigned minor, unsigned minors, + const char *procname, + const char *devname, + const struct gigaset_ops *ops, + struct module *owner); + +/* Deallocate driver structure. */ +void gigaset_freedriver(struct gigaset_driver *drv); +void gigaset_debugdrivers(void); +struct cardstate *gigaset_get_cs_by_tty(struct tty_struct *tty); +struct cardstate *gigaset_get_cs_by_id(int id); +void gigaset_blockdriver(struct gigaset_driver *drv); + +/* Allocate and initialize card state. Calls hardware dependent + gigaset_init[b]cs(). */ +struct cardstate *gigaset_initcs(struct gigaset_driver *drv, int channels, + int onechannel, int ignoreframes, + int cidmode, const char *modulename); + +/* Free card state. Calls hardware dependent gigaset_free[b]cs(). */ +void gigaset_freecs(struct cardstate *cs); + +/* Tell common.c that hardware and driver are ready. */ +int gigaset_start(struct cardstate *cs); + +/* Tell common.c that the device is not present any more. */ +void gigaset_stop(struct cardstate *cs); + +/* Tell common.c that the driver is being unloaded. */ +int gigaset_shutdown(struct cardstate *cs); + +/* Tell common.c that an skb has been sent. */ +void gigaset_skb_sent(struct bc_state *bcs, struct sk_buff *skb); + +/* Append event to the queue. + * Returns NULL on failure or a pointer to the event on success. + * ptr must be kmalloc()ed (and not be freed by the caller). + */ +struct event_t *gigaset_add_event(struct cardstate *cs, + struct at_state_t *at_state, int type, + void *ptr, int parameter, void *arg); + +/* Called on CONFIG1 command from frontend. */ +int gigaset_enterconfigmode(struct cardstate *cs); //0: success <0: errorcode + +/* cs->lock must not be locked */ +static inline void gigaset_schedule_event(struct cardstate *cs) +{ + unsigned long flags; + spin_lock_irqsave(&cs->lock, flags); + if (cs->running) + tasklet_schedule(&cs->event_tasklet); + spin_unlock_irqrestore(&cs->lock, flags); +} + +/* Tell common.c that B channel has been closed. */ +/* cs->lock must not be locked */ +static inline void gigaset_bchannel_down(struct bc_state *bcs) +{ + gigaset_add_event(bcs->cs, &bcs->at_state, EV_BC_CLOSED, NULL, 0, NULL); + + gig_dbg(DEBUG_CMD, "scheduling BC_CLOSED"); + gigaset_schedule_event(bcs->cs); +} + +/* Tell common.c that B channel has been opened. */ +/* cs->lock must not be locked */ +static inline void gigaset_bchannel_up(struct bc_state *bcs) +{ + gigaset_add_event(bcs->cs, &bcs->at_state, EV_BC_OPEN, NULL, 0, NULL); + + gig_dbg(DEBUG_CMD, "scheduling BC_OPEN"); + gigaset_schedule_event(bcs->cs); +} + +/* handling routines for sk_buff */ +/* ============================= */ + +/* pass received skb to LL + * Warning: skb must not be accessed anymore! + */ +static inline void gigaset_rcv_skb(struct sk_buff *skb, + struct cardstate *cs, + struct bc_state *bcs) +{ + cs->iif.rcvcallb_skb(cs->myid, bcs->channel, skb); + bcs->trans_down++; +} + +/* handle reception of corrupted skb + * Warning: skb must not be accessed anymore! + */ +static inline void gigaset_rcv_error(struct sk_buff *procskb, + struct cardstate *cs, + struct bc_state *bcs) +{ + if (procskb) + dev_kfree_skb(procskb); + + if (bcs->ignore) + --bcs->ignore; + else { + ++bcs->corrupted; + gigaset_isdn_rcv_err(bcs); + } +} + +/* append received bytes to inbuf */ +int gigaset_fill_inbuf(struct inbuf_t *inbuf, const unsigned char *src, + unsigned numbytes); + +/* =========================================================================== + * Functions implemented in interface.c + */ + +/* initialize interface */ +void gigaset_if_initdriver(struct gigaset_driver *drv, const char *procname, + const char *devname); +/* release interface */ +void gigaset_if_freedriver(struct gigaset_driver *drv); +/* add minor */ +void gigaset_if_init(struct cardstate *cs); +/* remove minor */ +void gigaset_if_free(struct cardstate *cs); +/* device received data */ +void gigaset_if_receive(struct cardstate *cs, + unsigned char *buffer, size_t len); + +#endif |
