| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Hansjoerg Lipp | 2328 | 85.03% | 2 | 5.00% |
| Tilman Schmidt | 397 | 14.50% | 31 | 77.50% |
| Linus Torvalds | 3 | 0.11% | 1 | 2.50% |
| Jiri Slaby | 2 | 0.07% | 1 | 2.50% |
| Thomas Gleixner | 2 | 0.07% | 1 | 2.50% |
| Tejun Heo | 2 | 0.07% | 1 | 2.50% |
| Greg Kroah-Hartman | 2 | 0.07% | 1 | 2.50% |
| Arun Sharma | 1 | 0.04% | 1 | 2.50% |
| Joe Perches | 1 | 0.04% | 1 | 2.50% |
| Total | 2738 | 40 |
/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * Siemens Gigaset 307x driver * Common header file for all connection variants * * Written by Stefan Eilers * and Hansjoerg Lipp <hjlipp@web.de> * * ===================================================================== * ===================================================================== */ #ifndef GIGASET_H #define GIGASET_H /* define global prefix for pr_ macros in linux/kernel.h */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/kernel.h> #include <linux/sched.h> #include <linux/compiler.h> #include <linux/types.h> #include <linux/ctype.h> #include <linux/slab.h> #include <linux/spinlock.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 <linux/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 511 /* Max. size of a response string */ #define MAX_EVENTS 64 /* size of event queue */ #define RBUFSIZE 8192 #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_EVENT = 0x00200, /* event processing */ DEBUG_HDLC = 0x00800, /* M10x HDLC processing */ DEBUG_CHANNEL = 0x01000, /* channel allocation/deallocation */ 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 */ }; #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_PROCEEDING 1 #define ZSAU_CALL_DELIVERED 2 #define ZSAU_ACTIVE 3 #define ZSAU_DISCONNECT_IND 4 #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) /* interrupt pipe messages */ #define HD_B1_FLOW_CONTROL 0x80 #define HD_B2_FLOW_CONTROL 0x81 #define HD_RECEIVEATDATA_ACK (0x35) /* 3070 */ #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 */ #define HD_SUSPEND_END (0x61) /* ISurf USB */ #define HD_RESET_INTERRUPT_PIPE_ACK (0xFF) /* ISurf USB + 3070 */ /* control requests */ #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_CLIP 6 /* total number */ #define AT_NUM 7 /* variables in struct at_state_t */ /* - numeric */ #define VAR_ZSAU 0 #define VAR_ZDLE 1 #define VAR_ZCTP 2 /* total number */ #define VAR_NUM 3 /* - string */ #define STR_NMBR 0 #define STR_ZCPN 1 #define STR_ZCON 2 #define STR_ZBC 3 #define STR_ZHLC 4 /* total number */ #define STR_NUM 5 /* event types */ #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_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 /* receiving messages (not payload data) */ #define INS_DLE_char 0x0002 /* DLE flag received (in DLE mode) */ #define INS_byte_stuff 0x0004 #define INS_have_data 0x0008 #define INS_DLE_command 0x0020 /* DLE message start (<DLE> X) received */ #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 */ /* layer 2 protocols (AT^SBPR=...) */ #define L2_BITSYNC 0 #define L2_HDLC 1 #define L2_VOICE 2 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[]; extern struct reply_t gigaset_tab_nocid[]; struct inbuf_t { 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 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; /* receive buffer */ unsigned rx_bufsize; /* max size accepted by application */ struct sk_buff *rx_skb; __u16 rx_fcs; int inputstate; /* see INS_XXXX */ int channel; struct cardstate *cs; unsigned chstate; /* bitmap (CHS_*) */ int ignore; unsigned proto2; /* layer 2 protocol (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; void *ap; /* associated LL application */ int apconnstate; /* LL application connection state */ spinlock_t aplock; }; 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; struct tty_port port; 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 gigaset_isdn_start() */ unsigned cidmode; int myid; /* id for communication with LL */ void *iif; /* LL interface structure */ unsigned short hw_hdr_len; /* headroom needed in data skbs */ 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 DLE mode is active (ZDLE=1 received -- M10x only) */ 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 + 1]; 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, 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); /* 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
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