diff options
Diffstat (limited to 'drivers/staging/i4l/pcbit/edss1.c')
| -rw-r--r-- | drivers/staging/i4l/pcbit/edss1.c | 310 |
1 files changed, 0 insertions, 310 deletions
diff --git a/drivers/staging/i4l/pcbit/edss1.c b/drivers/staging/i4l/pcbit/edss1.c deleted file mode 100644 index 5980d1b5da95..000000000000 --- a/drivers/staging/i4l/pcbit/edss1.c +++ /dev/null @@ -1,310 +0,0 @@ -/* - * DSS.1 Finite State Machine - * base: ITU-T Rec Q.931 - * - * Copyright (C) 1996 Universidade de Lisboa - * - * Written by Pedro Roque Marques (roque@di.fc.ul.pt) - * - * This software may be used and distributed according to the terms of - * the GNU General Public License, incorporated herein by reference. - */ - -/* - * TODO: complete the FSM - * move state/event descriptions to a user space logger - */ - -#include <linux/string.h> -#include <linux/kernel.h> - -#include <linux/types.h> -#include <linux/mm.h> -#include <linux/skbuff.h> - -#include <linux/timer.h> -#include <linux/io.h> - -#include <linux/isdnif.h> - -#include "pcbit.h" -#include "edss1.h" -#include "layer2.h" -#include "callbacks.h" - - -const char * const isdn_state_table[] = { - "Closed", - "Call initiated", - "Overlap sending", - "Outgoing call proceeding", - "NOT DEFINED", - "Call delivered", - "Call present", - "Call received", - "Connect request", - "Incoming call proceeding", - "Active", - "Disconnect request", - "Disconnect indication", - "NOT DEFINED", - "NOT DEFINED", - "Suspend request", - "NOT DEFINED", - "Resume request", - "NOT DEFINED", - "Release Request", - "NOT DEFINED", - "NOT DEFINED", - "NOT DEFINED", - "NOT DEFINED", - "NOT DEFINED", - "Overlap receiving", - "Select protocol on B-Channel", - "Activate B-channel protocol" -}; - -#ifdef DEBUG_ERRS -static -struct CauseValue { - byte nr; - char *descr; -} cvlist[] = { - {0x01, "Unallocated (unassigned) number"}, - {0x02, "No route to specified transit network"}, - {0x03, "No route to destination"}, - {0x04, "Send special information tone"}, - {0x05, "Misdialled trunk prefix"}, - {0x06, "Channel unacceptable"}, - {0x07, "Channel awarded and being delivered in an established channel"}, - {0x08, "Preemption"}, - {0x09, "Preemption - circuit reserved for reuse"}, - {0x10, "Normal call clearing"}, - {0x11, "User busy"}, - {0x12, "No user responding"}, - {0x13, "No answer from user (user alerted)"}, - {0x14, "Subscriber absent"}, - {0x15, "Call rejected"}, - {0x16, "Number changed"}, - {0x1a, "non-selected user clearing"}, - {0x1b, "Destination out of order"}, - {0x1c, "Invalid number format (address incomplete)"}, - {0x1d, "Facility rejected"}, - {0x1e, "Response to Status enquiry"}, - {0x1f, "Normal, unspecified"}, - {0x22, "No circuit/channel available"}, - {0x26, "Network out of order"}, - {0x27, "Permanent frame mode connection out-of-service"}, - {0x28, "Permanent frame mode connection operational"}, - {0x29, "Temporary failure"}, - {0x2a, "Switching equipment congestion"}, - {0x2b, "Access information discarded"}, - {0x2c, "Requested circuit/channel not available"}, - {0x2e, "Precedence call blocked"}, - {0x2f, "Resource unavailable, unspecified"}, - {0x31, "Quality of service unavailable"}, - {0x32, "Requested facility not subscribed"}, - {0x35, "Outgoing calls barred within CUG"}, - {0x37, "Incoming calls barred within CUG"}, - {0x39, "Bearer capability not authorized"}, - {0x3a, "Bearer capability not presently available"}, - {0x3e, "Inconsistency in designated outgoing access information and subscriber class"}, - {0x3f, "Service or option not available, unspecified"}, - {0x41, "Bearer capability not implemented"}, - {0x42, "Channel type not implemented"}, - {0x43, "Requested facility not implemented"}, - {0x44, "Only restricted digital information bearer capability is available"}, - {0x4f, "Service or option not implemented"}, - {0x51, "Invalid call reference value"}, - {0x52, "Identified channel does not exist"}, - {0x53, "A suspended call exists, but this call identity does not"}, - {0x54, "Call identity in use"}, - {0x55, "No call suspended"}, - {0x56, "Call having the requested call identity has been cleared"}, - {0x57, "User not member of CUG"}, - {0x58, "Incompatible destination"}, - {0x5a, "Non-existent CUG"}, - {0x5b, "Invalid transit network selection"}, - {0x5f, "Invalid message, unspecified"}, - {0x60, "Mandatory information element is missing"}, - {0x61, "Message type non-existent or not implemented"}, - {0x62, "Message not compatible with call state or message type non-existent or not implemented"}, - {0x63, "Information element/parameter non-existent or not implemented"}, - {0x64, "Invalid information element contents"}, - {0x65, "Message not compatible with call state"}, - {0x66, "Recovery on timer expiry"}, - {0x67, "Parameter non-existent or not implemented - passed on"}, - {0x6e, "Message with unrecognized parameter discarded"}, - {0x6f, "Protocol error, unspecified"}, - {0x7f, "Interworking, unspecified"} -}; - -#endif - -static struct isdn_event_desc { - unsigned short ev; - char *desc; -} isdn_event_table[] = { - {EV_USR_SETUP_REQ, "CC->L3: Setup Request"}, - {EV_USR_SETUP_RESP, "CC->L3: Setup Response"}, - {EV_USR_PROCED_REQ, "CC->L3: Proceeding Request"}, - {EV_USR_RELEASE_REQ, "CC->L3: Release Request"}, - - {EV_NET_SETUP, "NET->TE: setup "}, - {EV_NET_CALL_PROC, "NET->TE: call proceeding"}, - {EV_NET_SETUP_ACK, "NET->TE: setup acknowledge (more info needed)"}, - {EV_NET_CONN, "NET->TE: connect"}, - {EV_NET_CONN_ACK, "NET->TE: connect acknowledge"}, - {EV_NET_DISC, "NET->TE: disconnect indication"}, - {EV_NET_RELEASE, "NET->TE: release"}, - {EV_NET_RELEASE_COMP, "NET->TE: release complete"}, - {EV_NET_SELP_RESP, "Board: Select B-channel protocol ack"}, - {EV_NET_ACTV_RESP, "Board: Activate B-channel protocol ack"}, - {EV_TIMER, "Timeout"}, - {0, "NULL"} -}; - -char *strisdnevent(ushort ev) -{ - struct isdn_event_desc *entry; - - for (entry = isdn_event_table; entry->ev; entry++) - if (entry->ev == ev) - break; - - return entry->desc; -} - -/* - * Euro ISDN finite state machine - */ - -static struct fsm_timer_entry fsm_timers[] = { - {ST_CALL_PROC, 10}, - {ST_DISC_REQ, 2}, - {ST_ACTIVE_SELP, 5}, - {ST_ACTIVE_ACTV, 5}, - {ST_INCM_PROC, 10}, - {ST_CONN_REQ, 2}, - {0xff, 0} -}; - -static struct fsm_entry fsm_table[] = { -/* Connect Phase */ - /* Outgoing */ - {ST_NULL, ST_CALL_INIT, EV_USR_SETUP_REQ, cb_out_1}, - - {ST_CALL_INIT, ST_OVER_SEND, EV_NET_SETUP_ACK, cb_notdone}, - {ST_CALL_INIT, ST_CALL_PROC, EV_NET_CALL_PROC, NULL}, - {ST_CALL_INIT, ST_NULL, EV_NET_DISC, cb_out_2}, - - {ST_CALL_PROC, ST_ACTIVE_SELP, EV_NET_CONN, cb_out_2}, - {ST_CALL_PROC, ST_NULL, EV_NET_DISC, cb_disc_1}, - {ST_CALL_PROC, ST_DISC_REQ, EV_USR_RELEASE_REQ, cb_disc_2}, - - /* Incoming */ - {ST_NULL, ST_CALL_PRES, EV_NET_SETUP, NULL}, - - {ST_CALL_PRES, ST_INCM_PROC, EV_USR_PROCED_REQ, cb_in_1}, - {ST_CALL_PRES, ST_DISC_REQ, EV_USR_RELEASE_REQ, cb_disc_2}, - - {ST_INCM_PROC, ST_CONN_REQ, EV_USR_SETUP_RESP, cb_in_2}, - {ST_INCM_PROC, ST_DISC_REQ, EV_USR_RELEASE_REQ, cb_disc_2}, - - {ST_CONN_REQ, ST_ACTIVE_SELP, EV_NET_CONN_ACK, cb_in_3}, - - /* Active */ - {ST_ACTIVE, ST_NULL, EV_NET_DISC, cb_disc_1}, - {ST_ACTIVE, ST_DISC_REQ, EV_USR_RELEASE_REQ, cb_disc_2}, - {ST_ACTIVE, ST_NULL, EV_NET_RELEASE, cb_disc_3}, - - /* Disconnect */ - - {ST_DISC_REQ, ST_NULL, EV_NET_DISC, cb_disc_1}, - {ST_DISC_REQ, ST_NULL, EV_NET_RELEASE, cb_disc_3}, - - /* protocol selection */ - {ST_ACTIVE_SELP, ST_ACTIVE_ACTV, EV_NET_SELP_RESP, cb_selp_1}, - {ST_ACTIVE_SELP, ST_DISC_REQ, EV_USR_RELEASE_REQ, cb_disc_2}, - - {ST_ACTIVE_ACTV, ST_ACTIVE, EV_NET_ACTV_RESP, cb_open}, - {ST_ACTIVE_ACTV, ST_DISC_REQ, EV_USR_RELEASE_REQ, cb_disc_2}, - - /* Timers */ - {ST_CALL_PROC, ST_DISC_REQ, EV_TIMER, cb_disc_2}, - {ST_DISC_REQ, ST_NULL, EV_TIMER, cb_disc_3}, - {ST_ACTIVE_SELP, ST_DISC_REQ, EV_TIMER, cb_disc_2}, - {ST_ACTIVE_ACTV, ST_DISC_REQ, EV_TIMER, cb_disc_2}, - {ST_INCM_PROC, ST_DISC_REQ, EV_TIMER, cb_disc_2}, - {ST_CONN_REQ, ST_CONN_REQ, EV_TIMER, cb_in_2}, - - {0xff, 0, 0, NULL} -}; - - -static void pcbit_fsm_timer(unsigned long data) -{ - struct pcbit_dev *dev; - struct pcbit_chan *chan; - - chan = (struct pcbit_chan *) data; - - del_timer(&chan->fsm_timer); - chan->fsm_timer.function = NULL; - - dev = chan2dev(chan); - - if (!dev) { - printk(KERN_WARNING "pcbit: timer for unknown device\n"); - return; - } - - pcbit_fsm_event(dev, chan, EV_TIMER, NULL); -} - - -void pcbit_fsm_event(struct pcbit_dev *dev, struct pcbit_chan *chan, - unsigned short event, struct callb_data *data) -{ - struct fsm_entry *action; - struct fsm_timer_entry *tentry; - unsigned long flags; - - spin_lock_irqsave(&dev->lock, flags); - - for (action = fsm_table; action->init != 0xff; action++) - if (action->init == chan->fsm_state && action->event == event) - break; - - if (action->init == 0xff) { - - spin_unlock_irqrestore(&dev->lock, flags); - printk(KERN_DEBUG "fsm error: event %x on state %x\n", - event, chan->fsm_state); - return; - } - - if (chan->fsm_timer.function) { - del_timer(&chan->fsm_timer); - chan->fsm_timer.function = NULL; - } - - chan->fsm_state = action->final; - - pcbit_state_change(dev, chan, action->init, event, action->final); - - for (tentry = fsm_timers; tentry->init != 0xff; tentry++) - if (tentry->init == chan->fsm_state) - break; - - if (tentry->init != 0xff) { - setup_timer(&chan->fsm_timer, &pcbit_fsm_timer, (ulong)chan); - mod_timer(&chan->fsm_timer, jiffies + tentry->timeout * HZ); - } - - spin_unlock_irqrestore(&dev->lock, flags); - - if (action->callb) - action->callb(dev, chan, data); - -} |