831 строка
26 KiB
C
831 строка
26 KiB
C
/*
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* Siemens Gigaset 307x driver
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* Common header file for all connection variants
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*
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* Written by Stefan Eilers
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* and Hansjoerg Lipp <hjlipp@web.de>
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*
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* =====================================================================
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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* =====================================================================
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*/
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#ifndef GIGASET_H
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#define GIGASET_H
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/* define global prefix for pr_ macros in linux/kernel.h */
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <linux/kernel.h>
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#include <linux/sched.h>
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#include <linux/compiler.h>
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#include <linux/types.h>
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#include <linux/ctype.h>
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#include <linux/slab.h>
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#include <linux/spinlock.h>
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#include <linux/skbuff.h>
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#include <linux/netdevice.h>
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#include <linux/ppp_defs.h>
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#include <linux/timer.h>
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#include <linux/interrupt.h>
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#include <linux/tty.h>
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#include <linux/tty_driver.h>
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#include <linux/list.h>
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#include <linux/atomic.h>
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#define GIG_VERSION {0, 5, 0, 0}
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#define GIG_COMPAT {0, 4, 0, 0}
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#define MAX_REC_PARAMS 10 /* Max. number of params in response string */
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#define MAX_RESP_SIZE 511 /* Max. size of a response string */
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#define MAX_EVENTS 64 /* size of event queue */
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#define RBUFSIZE 8192
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#define GIG_TICK 100 /* in milliseconds */
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/* timeout values (unit: 1 sec) */
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#define INIT_TIMEOUT 1
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/* timeout values (unit: 0.1 sec) */
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#define RING_TIMEOUT 3 /* for additional parameters to RING */
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#define BAS_TIMEOUT 20 /* for response to Base USB ops */
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#define ATRDY_TIMEOUT 3 /* for HD_READY_SEND_ATDATA */
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#define BAS_RETRY 3 /* max. retries for base USB ops */
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#define MAXACT 3
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extern int gigaset_debuglevel; /* "needs" cast to (enum debuglevel) */
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/* debug flags, combine by adding/bitwise OR */
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enum debuglevel {
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DEBUG_INTR = 0x00008, /* interrupt processing */
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DEBUG_CMD = 0x00020, /* sent/received LL commands */
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DEBUG_STREAM = 0x00040, /* application data stream I/O events */
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DEBUG_STREAM_DUMP = 0x00080, /* application data stream content */
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DEBUG_LLDATA = 0x00100, /* sent/received LL data */
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DEBUG_EVENT = 0x00200, /* event processing */
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DEBUG_HDLC = 0x00800, /* M10x HDLC processing */
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DEBUG_CHANNEL = 0x01000, /* channel allocation/deallocation */
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DEBUG_TRANSCMD = 0x02000, /* AT-COMMANDS+RESPONSES */
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DEBUG_MCMD = 0x04000, /* COMMANDS THAT ARE SENT VERY OFTEN */
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DEBUG_INIT = 0x08000, /* (de)allocation+initialization of data
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structures */
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DEBUG_SUSPEND = 0x10000, /* suspend/resume processing */
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DEBUG_OUTPUT = 0x20000, /* output to device */
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DEBUG_ISO = 0x40000, /* isochronous transfers */
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DEBUG_IF = 0x80000, /* character device operations */
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DEBUG_USBREQ = 0x100000, /* USB communication (except payload
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data) */
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DEBUG_LOCKCMD = 0x200000, /* AT commands and responses when
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MS_LOCKED */
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DEBUG_ANY = 0x3fffff, /* print message if any of the others is
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activated */
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};
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#ifdef CONFIG_GIGASET_DEBUG
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#define gig_dbg(level, format, arg...) \
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do { \
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if (unlikely(((enum debuglevel)gigaset_debuglevel) & (level))) \
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printk(KERN_DEBUG KBUILD_MODNAME ": " format "\n", \
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## arg); \
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} while (0)
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#define DEBUG_DEFAULT (DEBUG_TRANSCMD | DEBUG_CMD | DEBUG_USBREQ)
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#else
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#define gig_dbg(level, format, arg...) do {} while (0)
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#define DEBUG_DEFAULT 0
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#endif
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void gigaset_dbg_buffer(enum debuglevel level, const unsigned char *msg,
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size_t len, const unsigned char *buf);
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/* connection state */
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#define ZSAU_NONE 0
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#define ZSAU_DISCONNECT_IND 4
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#define ZSAU_OUTGOING_CALL_PROCEEDING 1
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#define ZSAU_PROCEEDING 1
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#define ZSAU_CALL_DELIVERED 2
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#define ZSAU_ACTIVE 3
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#define ZSAU_NULL 5
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#define ZSAU_DISCONNECT_REQ 6
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#define ZSAU_UNKNOWN -1
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/* USB control transfer requests */
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#define OUT_VENDOR_REQ (USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT)
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#define IN_VENDOR_REQ (USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT)
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/* interrupt pipe messages */
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#define HD_B1_FLOW_CONTROL 0x80
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#define HD_B2_FLOW_CONTROL 0x81
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#define HD_RECEIVEATDATA_ACK (0x35) /* 3070 */
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#define HD_READY_SEND_ATDATA (0x36) /* 3070 */
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#define HD_OPEN_ATCHANNEL_ACK (0x37) /* 3070 */
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#define HD_CLOSE_ATCHANNEL_ACK (0x38) /* 3070 */
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#define HD_DEVICE_INIT_OK (0x11) /* ISurf USB + 3070 */
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#define HD_OPEN_B1CHANNEL_ACK (0x51) /* ISurf USB + 3070 */
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#define HD_OPEN_B2CHANNEL_ACK (0x52) /* ISurf USB + 3070 */
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#define HD_CLOSE_B1CHANNEL_ACK (0x53) /* ISurf USB + 3070 */
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#define HD_CLOSE_B2CHANNEL_ACK (0x54) /* ISurf USB + 3070 */
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#define HD_SUSPEND_END (0x61) /* ISurf USB */
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#define HD_RESET_INTERRUPT_PIPE_ACK (0xFF) /* ISurf USB + 3070 */
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/* control requests */
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#define HD_OPEN_B1CHANNEL (0x23) /* ISurf USB + 3070 */
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#define HD_CLOSE_B1CHANNEL (0x24) /* ISurf USB + 3070 */
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#define HD_OPEN_B2CHANNEL (0x25) /* ISurf USB + 3070 */
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#define HD_CLOSE_B2CHANNEL (0x26) /* ISurf USB + 3070 */
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#define HD_RESET_INTERRUPT_PIPE (0x27) /* ISurf USB + 3070 */
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#define HD_DEVICE_INIT_ACK (0x34) /* ISurf USB + 3070 */
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#define HD_WRITE_ATMESSAGE (0x12) /* 3070 */
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#define HD_READ_ATMESSAGE (0x13) /* 3070 */
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#define HD_OPEN_ATCHANNEL (0x28) /* 3070 */
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#define HD_CLOSE_ATCHANNEL (0x29) /* 3070 */
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/* number of B channels supported by base driver */
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#define BAS_CHANNELS 2
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/* USB frames for isochronous transfer */
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#define BAS_FRAMETIME 1 /* number of milliseconds between frames */
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#define BAS_NUMFRAMES 8 /* number of frames per URB */
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#define BAS_MAXFRAME 16 /* allocated bytes per frame */
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#define BAS_NORMFRAME 8 /* send size without flow control */
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#define BAS_HIGHFRAME 10 /* " " with positive flow control */
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#define BAS_LOWFRAME 5 /* " " with negative flow control */
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#define BAS_CORRFRAMES 4 /* flow control multiplicator */
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#define BAS_INBUFSIZE (BAS_MAXFRAME * BAS_NUMFRAMES) /* size of isoc in buf
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* per URB */
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#define BAS_OUTBUFSIZE 4096 /* size of common isoc out buffer */
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#define BAS_OUTBUFPAD BAS_MAXFRAME /* size of pad area for isoc out buf */
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#define BAS_INURBS 3
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#define BAS_OUTURBS 3
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/* variable commands in struct bc_state */
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#define AT_ISO 0
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#define AT_DIAL 1
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#define AT_MSN 2
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#define AT_BC 3
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#define AT_PROTO 4
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#define AT_TYPE 5
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#define AT_CLIP 6
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/* total number */
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#define AT_NUM 7
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/* variables in struct at_state_t */
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#define VAR_ZSAU 0
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#define VAR_ZDLE 1
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#define VAR_ZCTP 2
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#define VAR_NUM 3
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#define STR_NMBR 0
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#define STR_ZCPN 1
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#define STR_ZCON 2
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#define STR_ZBC 3
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#define STR_ZHLC 4
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#define STR_NUM 5
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#define EV_TIMEOUT -105
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#define EV_IF_VER -106
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#define EV_PROC_CIDMODE -107
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#define EV_SHUTDOWN -108
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#define EV_START -110
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#define EV_STOP -111
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#define EV_IF_LOCK -112
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#define EV_ACCEPT -114
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#define EV_DIAL -115
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#define EV_HUP -116
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#define EV_BC_OPEN -117
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#define EV_BC_CLOSED -118
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/* input state */
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#define INS_command 0x0001 /* receiving messages (not payload data) */
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#define INS_DLE_char 0x0002 /* DLE flag received (in DLE mode) */
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#define INS_byte_stuff 0x0004
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#define INS_have_data 0x0008
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#define INS_DLE_command 0x0020 /* DLE message start (<DLE> X) received */
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#define INS_flag_hunt 0x0040
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/* channel state */
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#define CHS_D_UP 0x01
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#define CHS_B_UP 0x02
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#define CHS_NOTIFY_LL 0x04
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#define ICALL_REJECT 0
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#define ICALL_ACCEPT 1
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#define ICALL_IGNORE 2
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/* device state */
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#define MS_UNINITIALIZED 0
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#define MS_INIT 1
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#define MS_LOCKED 2
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#define MS_SHUTDOWN 3
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#define MS_RECOVER 4
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#define MS_READY 5
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/* mode */
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#define M_UNKNOWN 0
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#define M_CONFIG 1
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#define M_UNIMODEM 2
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#define M_CID 3
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/* start mode */
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#define SM_LOCKED 0
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#define SM_ISDN 1 /* default */
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/* layer 2 protocols (AT^SBPR=...) */
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#define L2_BITSYNC 0
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#define L2_HDLC 1
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#define L2_VOICE 2
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struct gigaset_ops;
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struct gigaset_driver;
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struct usb_cardstate;
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struct ser_cardstate;
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struct bas_cardstate;
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struct bc_state;
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struct usb_bc_state;
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struct ser_bc_state;
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struct bas_bc_state;
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struct reply_t {
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int resp_code; /* RSP_XXXX */
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int min_ConState; /* <0 => ignore */
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int max_ConState; /* <0 => ignore */
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int parameter; /* e.g. ZSAU_XXXX <0: ignore*/
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int new_ConState; /* <0 => ignore */
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int timeout; /* >0 => *HZ; <=0 => TOUT_XXXX*/
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int action[MAXACT]; /* ACT_XXXX */
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char *command; /* NULL==none */
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};
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extern struct reply_t gigaset_tab_cid[];
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extern struct reply_t gigaset_tab_nocid[];
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struct inbuf_t {
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struct cardstate *cs;
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int inputstate;
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int head, tail;
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unsigned char data[RBUFSIZE];
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};
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/* isochronous write buffer structure
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* circular buffer with pad area for extraction of complete USB frames
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* - data[read..nextread-1] is valid data already submitted to the USB subsystem
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* - data[nextread..write-1] is valid data yet to be sent
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* - data[write] is the next byte to write to
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* - in byte-oriented L2 procotols, it is completely free
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* - in bit-oriented L2 procotols, it may contain a partial byte of valid data
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* - data[write+1..read-1] is free
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* - wbits is the number of valid data bits in data[write], starting at the LSB
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* - writesem is the semaphore for writing to the buffer:
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* if writesem <= 0, data[write..read-1] is currently being written to
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* - idle contains the byte value to repeat when the end of valid data is
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* reached; if nextread==write (buffer contains no data to send), either the
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* BAS_OUTBUFPAD bytes immediately before data[write] (if
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* write>=BAS_OUTBUFPAD) or those of the pad area (if write<BAS_OUTBUFPAD)
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* are also filled with that value
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*/
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struct isowbuf_t {
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int read;
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int nextread;
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int write;
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atomic_t writesem;
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int wbits;
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unsigned char data[BAS_OUTBUFSIZE + BAS_OUTBUFPAD];
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unsigned char idle;
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};
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/* isochronous write URB context structure
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* data to be stored along with the URB and retrieved when it is returned
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* as completed by the USB subsystem
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* - urb: pointer to the URB itself
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* - bcs: pointer to the B Channel control structure
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* - limit: end of write buffer area covered by this URB
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* - status: URB completion status
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*/
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struct isow_urbctx_t {
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struct urb *urb;
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struct bc_state *bcs;
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int limit;
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int status;
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};
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/* AT state structure
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* data associated with the state of an ISDN connection, whether or not
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* it is currently assigned a B channel
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*/
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struct at_state_t {
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struct list_head list;
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int waiting;
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int getstring;
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unsigned timer_index;
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unsigned long timer_expires;
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int timer_active;
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unsigned int ConState; /* State of connection */
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struct reply_t *replystruct;
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int cid;
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int int_var[VAR_NUM]; /* see VAR_XXXX */
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char *str_var[STR_NUM]; /* see STR_XXXX */
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unsigned pending_commands; /* see PC_XXXX */
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unsigned seq_index;
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struct cardstate *cs;
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struct bc_state *bcs;
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};
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struct event_t {
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int type;
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void *ptr, *arg;
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int parameter;
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int cid;
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struct at_state_t *at_state;
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};
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/* This buffer holds all information about the used B-Channel */
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struct bc_state {
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struct sk_buff *tx_skb; /* Current transfer buffer to modem */
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struct sk_buff_head squeue; /* B-Channel send Queue */
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/* Variables for debugging .. */
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int corrupted; /* Counter for corrupted packages */
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int trans_down; /* Counter of packages (downstream) */
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int trans_up; /* Counter of packages (upstream) */
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struct at_state_t at_state;
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/* receive buffer */
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unsigned rx_bufsize; /* max size accepted by application */
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struct sk_buff *rx_skb;
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__u16 rx_fcs;
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int inputstate; /* see INS_XXXX */
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int channel;
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struct cardstate *cs;
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unsigned chstate; /* bitmap (CHS_*) */
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int ignore;
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unsigned proto2; /* layer 2 protocol (L2_*) */
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char *commands[AT_NUM]; /* see AT_XXXX */
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#ifdef CONFIG_GIGASET_DEBUG
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int emptycount;
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#endif
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int busy;
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int use_count;
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/* private data of hardware drivers */
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union {
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struct ser_bc_state *ser; /* serial hardware driver */
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struct usb_bc_state *usb; /* usb hardware driver (m105) */
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struct bas_bc_state *bas; /* usb hardware driver (base) */
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} hw;
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void *ap; /* associated LL application */
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int apconnstate; /* LL application connection state */
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spinlock_t aplock;
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};
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struct cardstate {
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struct gigaset_driver *driver;
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unsigned minor_index;
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struct device *dev;
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struct device *tty_dev;
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unsigned flags;
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const struct gigaset_ops *ops;
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/* Stuff to handle communication */
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wait_queue_head_t waitqueue;
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int waiting;
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int mode; /* see M_XXXX */
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int mstate; /* Modem state: see MS_XXXX */
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/* only changed by the event layer */
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int cmd_result;
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int channels;
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struct bc_state *bcs; /* Array of struct bc_state */
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int onechannel; /* data and commands transmitted in one
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stream (M10x) */
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spinlock_t lock;
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struct at_state_t at_state; /* at_state_t for cid == 0 */
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struct list_head temp_at_states;/* list of temporary "struct
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at_state_t"s without B channel */
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struct inbuf_t *inbuf;
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struct cmdbuf_t *cmdbuf, *lastcmdbuf;
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spinlock_t cmdlock;
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unsigned curlen, cmdbytes;
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struct tty_port port;
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struct tasklet_struct if_wake_tasklet;
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unsigned control_state;
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unsigned fwver[4];
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int gotfwver;
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unsigned running; /* !=0 if events are handled */
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unsigned connected; /* !=0 if hardware is connected */
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unsigned isdn_up; /* !=0 after gigaset_isdn_start() */
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unsigned cidmode;
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int myid; /* id for communication with LL */
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void *iif; /* LL interface structure */
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unsigned short hw_hdr_len; /* headroom needed in data skbs */
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struct reply_t *tabnocid;
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struct reply_t *tabcid;
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int cs_init;
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int ignoreframes; /* frames to ignore after setting up the
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B channel */
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struct mutex mutex; /* locks this structure:
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* connected is not changed,
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* hardware_up is not changed,
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* MState is not changed to or from
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* MS_LOCKED */
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struct timer_list timer;
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int retry_count;
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int dle; /* !=0 if DLE mode is active
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(ZDLE=1 received -- M10x only) */
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int cur_at_seq; /* sequence of AT commands being
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processed */
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int curchannel; /* channel those commands are meant
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for */
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int commands_pending; /* flag(s) in xxx.commands_pending have
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been set */
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struct tasklet_struct
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event_tasklet; /* tasklet for serializing AT commands.
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* Scheduled
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* -> for modem reponses (and
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* incoming data for M10x)
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* -> on timeout
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* -> after setting bits in
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* xxx.at_state.pending_command
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* (e.g. command from LL) */
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struct tasklet_struct
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write_tasklet; /* tasklet for serial output
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* (not used in base driver) */
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/* event queue */
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struct event_t events[MAX_EVENTS];
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unsigned ev_tail, ev_head;
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spinlock_t ev_lock;
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/* current modem response */
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unsigned char respdata[MAX_RESP_SIZE + 1];
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unsigned cbytes;
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/* private data of hardware drivers */
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union {
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struct usb_cardstate *usb; /* USB hardware driver (m105) */
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struct ser_cardstate *ser; /* serial hardware driver */
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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, struct cmdbuf_t *cb);
|
|
|
|
/* 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 */
|
|
void (*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 LL interface to put an skb into the send-queue.
|
|
* After sending is completed, gigaset_skb_sent() must be called
|
|
* with the skb's link layer header preserved. */
|
|
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 LL interface to put an skb into the send queue. */
|
|
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 LL interface to put an skb into the send queue. */
|
|
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 LL interface
|
|
*/
|
|
|
|
/* Called from common.c for setting up/shutting down with the ISDN subsystem */
|
|
void gigaset_isdn_regdrv(void);
|
|
void gigaset_isdn_unregdrv(void);
|
|
int gigaset_isdn_regdev(struct cardstate *cs, const char *isdnid);
|
|
void gigaset_isdn_unregdev(struct cardstate *cs);
|
|
|
|
/* Called from hardware module to indicate completion of an skb */
|
|
void gigaset_skb_sent(struct bc_state *bcs, struct sk_buff *skb);
|
|
void gigaset_skb_rcvd(struct bc_state *bcs, struct sk_buff *skb);
|
|
void gigaset_isdn_rcv_err(struct bc_state *bcs);
|
|
|
|
/* Called from common.c/ev-layer.c to indicate events relevant to the LL */
|
|
void gigaset_isdn_start(struct cardstate *cs);
|
|
void gigaset_isdn_stop(struct cardstate *cs);
|
|
int gigaset_isdn_icall(struct at_state_t *at_state);
|
|
void gigaset_isdn_connD(struct bc_state *bcs);
|
|
void gigaset_isdn_hupD(struct bc_state *bcs);
|
|
void gigaset_isdn_connB(struct bc_state *bcs);
|
|
void gigaset_isdn_hupB(struct bc_state *bcs);
|
|
|
|
/* ===========================================================================
|
|
* 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);
|
|
struct bc_state *gigaset_get_free_channel(struct cardstate *cs);
|
|
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);
|
|
|
|
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);
|
|
|
|
/* 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);
|
|
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);
|
|
gigaset_schedule_event(bcs->cs);
|
|
}
|
|
|
|
/* set up next receive skb for data mode */
|
|
static inline struct sk_buff *gigaset_new_rx_skb(struct bc_state *bcs)
|
|
{
|
|
struct cardstate *cs = bcs->cs;
|
|
unsigned short hw_hdr_len = cs->hw_hdr_len;
|
|
|
|
if (bcs->ignore) {
|
|
bcs->rx_skb = NULL;
|
|
} else {
|
|
bcs->rx_skb = dev_alloc_skb(bcs->rx_bufsize + hw_hdr_len);
|
|
if (bcs->rx_skb == NULL)
|
|
dev_warn(cs->dev, "could not allocate skb\n");
|
|
else
|
|
skb_reserve(bcs->rx_skb, hw_hdr_len);
|
|
}
|
|
return bcs->rx_skb;
|
|
}
|
|
|
|
/* 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
|