/* * Stuff used by all variants of the driver * * Copyright (c) 2001 by Stefan Eilers (Eilers.Stefan@epost.de), * Hansjoerg Lipp (hjlipp@web.de), * Tilman Schmidt (tilman@imap.cc). * * ===================================================================== * 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. * ===================================================================== * ToDo: ... * ===================================================================== * Version: $Id: i4l.c,v 1.3.2.9 2006/02/04 18:28:16 hjlipp Exp $ * ===================================================================== */ #include "gigaset.h" /* == Handling of I4L IO ============================================================================*/ /* writebuf_from_LL * called by LL to transmit data on an open channel * inserts the buffer data into the send queue and starts the transmission * Note that this operation must not sleep! * When the buffer is processed completely, gigaset_skb_sent() should be called. * parameters: * driverID driver ID as assigned by LL * channel channel number * ack if != 0 LL wants to be notified on completion via statcallb(ISDN_STAT_BSENT) * skb skb containing data to send * return value: * number of accepted bytes * 0 if temporarily unable to accept data (out of buffer space) * <0 on error (eg. -EINVAL) */ static int writebuf_from_LL(int driverID, int channel, int ack, struct sk_buff *skb) { struct cardstate *cs; struct bc_state *bcs; unsigned len; unsigned skblen; if (!(cs = gigaset_get_cs_by_id(driverID))) { err("%s: invalid driver ID (%d)", __func__, driverID); return -ENODEV; } if (channel < 0 || channel >= cs->channels) { err("%s: invalid channel ID (%d)", __func__, channel); return -ENODEV; } bcs = &cs->bcs[channel]; len = skb->len; dbg(DEBUG_LLDATA, "Receiving data from LL (id: %d, channel: %d, ack: %d, size: %d)", driverID, channel, ack, len); if (!len) { if (ack) warn("not ACKing empty packet from LL"); return 0; } if (len > MAX_BUF_SIZE) { err("%s: packet too large (%d bytes)", __func__, channel); return -EINVAL; } if (!atomic_read(&cs->connected)) return -ENODEV; skblen = ack ? len : 0; skb->head[0] = skblen & 0xff; skb->head[1] = skblen >> 8; dbg(DEBUG_MCMD, "skb: len=%u, skblen=%u: %02x %02x", len, skblen, (unsigned) skb->head[0], (unsigned) skb->head[1]); /* pass to device-specific module */ return cs->ops->send_skb(bcs, skb); } void gigaset_skb_sent(struct bc_state *bcs, struct sk_buff *skb) { unsigned len; isdn_ctrl response; ++bcs->trans_up; if (skb->len) warn("%s: skb->len==%d", __func__, skb->len); len = (unsigned char) skb->head[0] | (unsigned) (unsigned char) skb->head[1] << 8; if (len) { dbg(DEBUG_MCMD, "Acknowledge sending to LL (id: %d, channel: %d size: %u)", bcs->cs->myid, bcs->channel, len); response.driver = bcs->cs->myid; response.command = ISDN_STAT_BSENT; response.arg = bcs->channel; response.parm.length = len; bcs->cs->iif.statcallb(&response); } } EXPORT_SYMBOL_GPL(gigaset_skb_sent); /* This function will be called by LL to send commands * NOTE: LL ignores the returned value, for commands other than ISDN_CMD_IOCTL, * so don't put too much effort into it. */ static int command_from_LL(isdn_ctrl *cntrl) { struct cardstate *cs = gigaset_get_cs_by_id(cntrl->driver); //isdn_ctrl response; //unsigned long flags; struct bc_state *bcs; int retval = 0; struct setup_parm *sp; //dbg(DEBUG_ANY, "Gigaset_HW: Receiving command"); gigaset_debugdrivers(); /* Terminate this call if no device is present. Bt if the command is "ISDN_CMD_LOCK" or * "ISDN_CMD_UNLOCK" then execute it due to the fact that they are device independent ! */ //FIXME "remove test for &connected" if ((!cs || !atomic_read(&cs->connected))) { warn("LL tried to access unknown device with nr. %d", cntrl->driver); return -ENODEV; } switch (cntrl->command) { case ISDN_CMD_IOCTL: dbg(DEBUG_ANY, "ISDN_CMD_IOCTL (driver:%d,arg: %ld)", cntrl->driver, cntrl->arg); warn("ISDN_CMD_IOCTL is not supported."); return -EINVAL; case ISDN_CMD_DIAL: dbg(DEBUG_ANY, "ISDN_CMD_DIAL (driver: %d, channel: %ld, " "phone: %s,ownmsn: %s, si1: %d, si2: %d)", cntrl->driver, cntrl->arg, cntrl->parm.setup.phone, cntrl->parm.setup.eazmsn, cntrl->parm.setup.si1, cntrl->parm.setup.si2); if (cntrl->arg >= cs->channels) { err("invalid channel (%d)", (int) cntrl->arg); return -EINVAL; } bcs = cs->bcs + cntrl->arg; if (!gigaset_get_channel(bcs)) { err("channel not free"); return -EBUSY; } sp = kmalloc(sizeof *sp, GFP_ATOMIC); if (!sp) { gigaset_free_channel(bcs); err("ISDN_CMD_DIAL: out of memory"); return -ENOMEM; } *sp = cntrl->parm.setup; if (!gigaset_add_event(cs, &bcs->at_state, EV_DIAL, sp, atomic_read(&bcs->at_state.seq_index), NULL)) { //FIXME what should we do? kfree(sp); gigaset_free_channel(bcs); return -ENOMEM; } dbg(DEBUG_CMD, "scheduling DIAL"); gigaset_schedule_event(cs); break; case ISDN_CMD_ACCEPTD: //FIXME dbg(DEBUG_ANY, "ISDN_CMD_ACCEPTD"); if (cntrl->arg >= cs->channels) { err("invalid channel (%d)", (int) cntrl->arg); return -EINVAL; } if (!gigaset_add_event(cs, &cs->bcs[cntrl->arg].at_state, EV_ACCEPT, NULL, 0, NULL)) { //FIXME what should we do? return -ENOMEM; } dbg(DEBUG_CMD, "scheduling ACCEPT"); gigaset_schedule_event(cs); break; case ISDN_CMD_ACCEPTB: dbg(DEBUG_ANY, "ISDN_CMD_ACCEPTB"); break; case ISDN_CMD_HANGUP: dbg(DEBUG_ANY, "ISDN_CMD_HANGUP (channel: %d)", (int) cntrl->arg); if (cntrl->arg >= cs->channels) { err("ISDN_CMD_HANGUP: invalid channel (%u)", (unsigned) cntrl->arg); return -EINVAL; } if (!gigaset_add_event(cs, &cs->bcs[cntrl->arg].at_state, EV_HUP, NULL, 0, NULL)) { //FIXME what should we do? return -ENOMEM; } dbg(DEBUG_CMD, "scheduling HUP"); gigaset_schedule_event(cs); break; case ISDN_CMD_CLREAZ: /* Do not signal incoming signals */ //FIXME dbg(DEBUG_ANY, "ISDN_CMD_CLREAZ"); break; case ISDN_CMD_SETEAZ: /* Signal incoming calls for given MSN */ //FIXME dbg(DEBUG_ANY, "ISDN_CMD_SETEAZ (id:%d, channel: %ld, number: %s)", cntrl->driver, cntrl->arg, cntrl->parm.num); break; case ISDN_CMD_SETL2: /* Set L2 to given protocol */ dbg(DEBUG_ANY, "ISDN_CMD_SETL2 (Channel: %ld, Proto: %lx)", cntrl->arg & 0xff, (cntrl->arg >> 8)); if ((cntrl->arg & 0xff) >= cs->channels) { err("invalid channel (%u)", (unsigned) cntrl->arg & 0xff); return -EINVAL; } if (!gigaset_add_event(cs, &cs->bcs[cntrl->arg & 0xff].at_state, EV_PROTO_L2, NULL, cntrl->arg >> 8, NULL)) { //FIXME what should we do? return -ENOMEM; } dbg(DEBUG_CMD, "scheduling PROTO_L2"); gigaset_schedule_event(cs); break; case ISDN_CMD_SETL3: /* Set L3 to given protocol */ dbg(DEBUG_ANY, "ISDN_CMD_SETL3 (Channel: %ld, Proto: %lx)", cntrl->arg & 0xff, (cntrl->arg >> 8)); if ((cntrl->arg & 0xff) >= cs->channels) { err("invalid channel (%u)", (unsigned) cntrl->arg & 0xff); return -EINVAL; } if (cntrl->arg >> 8 != ISDN_PROTO_L3_TRANS) { err("invalid protocol %lu", cntrl->arg >> 8); return -EINVAL; } break; case ISDN_CMD_PROCEED: dbg(DEBUG_ANY, "ISDN_CMD_PROCEED"); //FIXME break; case ISDN_CMD_ALERT: dbg(DEBUG_ANY, "ISDN_CMD_ALERT"); //FIXME if (cntrl->arg >= cs->channels) { err("invalid channel (%d)", (int) cntrl->arg); return -EINVAL; } //bcs = cs->bcs + cntrl->arg; //bcs->proto2 = -1; // FIXME break; case ISDN_CMD_REDIR: dbg(DEBUG_ANY, "ISDN_CMD_REDIR"); //FIXME break; case ISDN_CMD_PROT_IO: dbg(DEBUG_ANY, "ISDN_CMD_PROT_IO"); break; case ISDN_CMD_FAXCMD: dbg(DEBUG_ANY, "ISDN_CMD_FAXCMD"); break; case ISDN_CMD_GETL2: dbg(DEBUG_ANY, "ISDN_CMD_GETL2"); break; case ISDN_CMD_GETL3: dbg(DEBUG_ANY, "ISDN_CMD_GETL3"); break; case ISDN_CMD_GETEAZ: dbg(DEBUG_ANY, "ISDN_CMD_GETEAZ"); break; case ISDN_CMD_SETSIL: dbg(DEBUG_ANY, "ISDN_CMD_SETSIL"); break; case ISDN_CMD_GETSIL: dbg(DEBUG_ANY, "ISDN_CMD_GETSIL"); break; default: err("unknown command %d from LL", cntrl->command); return -EINVAL; } return retval; } void gigaset_i4l_cmd(struct cardstate *cs, int cmd) { isdn_ctrl command; command.driver = cs->myid; command.command = cmd; command.arg = 0; cs->iif.statcallb(&command); } void gigaset_i4l_channel_cmd(struct bc_state *bcs, int cmd) { isdn_ctrl command; command.driver = bcs->cs->myid; command.command = cmd; command.arg = bcs->channel; bcs->cs->iif.statcallb(&command); } int gigaset_isdn_setup_dial(struct at_state_t *at_state, void *data) { struct bc_state *bcs = at_state->bcs; unsigned proto; const char *bc; size_t length[AT_NUM]; size_t l; int i; struct setup_parm *sp = data; switch (bcs->proto2) { case ISDN_PROTO_L2_HDLC: proto = 1; /* 0: Bitsynchron, 1: HDLC, 2: voice */ break; case ISDN_PROTO_L2_TRANS: proto = 2; /* 0: Bitsynchron, 1: HDLC, 2: voice */ break; default: err("invalid protocol: %u", bcs->proto2); return -EINVAL; } switch (sp->si1) { case 1: /* audio */ bc = "9090A3"; /* 3.1 kHz audio, A-law */ break; case 7: /* data */ default: /* hope the app knows what it is doing */ bc = "8890"; /* unrestricted digital information */ } //FIXME add missing si1 values from 1TR6, inspect si2, set HLC/LLC length[AT_DIAL ] = 1 + strlen(sp->phone) + 1 + 1; l = strlen(sp->eazmsn); length[AT_MSN ] = l ? 6 + l + 1 + 1 : 0; length[AT_BC ] = 5 + strlen(bc) + 1 + 1; length[AT_PROTO] = 6 + 1 + 1 + 1; /* proto: 1 character */ length[AT_ISO ] = 6 + 1 + 1 + 1; /* channel: 1 character */ length[AT_TYPE ] = 6 + 1 + 1 + 1; /* call type: 1 character */ length[AT_HLC ] = 0; for (i = 0; i < AT_NUM; ++i) { kfree(bcs->commands[i]); bcs->commands[i] = NULL; if (length[i] && !(bcs->commands[i] = kmalloc(length[i], GFP_ATOMIC))) { err("out of memory"); return -ENOMEM; } } /* type = 1: extern, 0: intern, 2: recall, 3: door, 4: centrex */ if (sp->phone[0] == '*' && sp->phone[1] == '*') { /* internal call: translate ** prefix to CTP value */ snprintf(bcs->commands[AT_DIAL], length[AT_DIAL], "D%s\r", sp->phone+2); strncpy(bcs->commands[AT_TYPE], "^SCTP=0\r", length[AT_TYPE]); } else { snprintf(bcs->commands[AT_DIAL], length[AT_DIAL], "D%s\r", sp->phone); strncpy(bcs->commands[AT_TYPE], "^SCTP=1\r", length[AT_TYPE]); } if (bcs->commands[AT_MSN]) snprintf(bcs->commands[AT_MSN], length[AT_MSN], "^SMSN=%s\r", sp->eazmsn); snprintf(bcs->commands[AT_BC ], length[AT_BC ], "^SBC=%s\r", bc); snprintf(bcs->commands[AT_PROTO], length[AT_PROTO], "^SBPR=%u\r", proto); snprintf(bcs->commands[AT_ISO ], length[AT_ISO ], "^SISO=%u\r", (unsigned)bcs->channel + 1); return 0; } int gigaset_isdn_setup_accept(struct at_state_t *at_state) { unsigned proto; size_t length[AT_NUM]; int i; struct bc_state *bcs = at_state->bcs; switch (bcs->proto2) { case ISDN_PROTO_L2_HDLC: proto = 1; /* 0: Bitsynchron, 1: HDLC, 2: voice */ break; case ISDN_PROTO_L2_TRANS: proto = 2; /* 0: Bitsynchron, 1: HDLC, 2: voice */ break; default: err("invalid protocol: %u", bcs->proto2); return -EINVAL; } length[AT_DIAL ] = 0; length[AT_MSN ] = 0; length[AT_BC ] = 0; length[AT_PROTO] = 6 + 1 + 1 + 1; /* proto: 1 character */ length[AT_ISO ] = 6 + 1 + 1 + 1; /* channel: 1 character */ length[AT_TYPE ] = 0; length[AT_HLC ] = 0; for (i = 0; i < AT_NUM; ++i) { kfree(bcs->commands[i]); bcs->commands[i] = NULL; if (length[i] && !(bcs->commands[i] = kmalloc(length[i], GFP_ATOMIC))) { err("out of memory"); return -ENOMEM; } } snprintf(bcs->commands[AT_PROTO], length[AT_PROTO], "^SBPR=%u\r", proto); snprintf(bcs->commands[AT_ISO ], length[AT_ISO ], "^SISO=%u\r", (unsigned) bcs->channel + 1); return 0; } int gigaset_isdn_icall(struct at_state_t *at_state) { struct cardstate *cs = at_state->cs; struct bc_state *bcs = at_state->bcs; isdn_ctrl response; int retval; /* fill ICALL structure */ response.parm.setup.si1 = 0; /* default: unknown */ response.parm.setup.si2 = 0; response.parm.setup.screen = 0; //FIXME how to set these? response.parm.setup.plan = 0; if (!at_state->str_var[STR_ZBC]) { /* no BC (internal call): assume speech, A-law */ response.parm.setup.si1 = 1; } else if (!strcmp(at_state->str_var[STR_ZBC], "8890")) { /* unrestricted digital information */ response.parm.setup.si1 = 7; } else if (!strcmp(at_state->str_var[STR_ZBC], "8090A3")) { /* speech, A-law */ response.parm.setup.si1 = 1; } else if (!strcmp(at_state->str_var[STR_ZBC], "9090A3")) { /* 3,1 kHz audio, A-law */ response.parm.setup.si1 = 1; response.parm.setup.si2 = 2; } else { warn("RING ignored - unsupported BC %s", at_state->str_var[STR_ZBC]); return ICALL_IGNORE; } if (at_state->str_var[STR_NMBR]) { strncpy(response.parm.setup.phone, at_state->str_var[STR_NMBR], sizeof response.parm.setup.phone - 1); response.parm.setup.phone[sizeof response.parm.setup.phone - 1] = 0; } else response.parm.setup.phone[0] = 0; if (at_state->str_var[STR_ZCPN]) { strncpy(response.parm.setup.eazmsn, at_state->str_var[STR_ZCPN], sizeof response.parm.setup.eazmsn - 1); response.parm.setup.eazmsn[sizeof response.parm.setup.eazmsn - 1] = 0; } else response.parm.setup.eazmsn[0] = 0; if (!bcs) { notice("no channel for incoming call"); dbg(DEBUG_CMD, "Sending ICALLW"); response.command = ISDN_STAT_ICALLW; response.arg = 0; //FIXME } else { dbg(DEBUG_CMD, "Sending ICALL"); response.command = ISDN_STAT_ICALL; response.arg = bcs->channel; //FIXME } response.driver = cs->myid; retval = cs->iif.statcallb(&response); dbg(DEBUG_CMD, "Response: %d", retval); switch (retval) { case 0: /* no takers */ return ICALL_IGNORE; case 1: /* alerting */ bcs->chstate |= CHS_NOTIFY_LL; return ICALL_ACCEPT; case 2: /* reject */ return ICALL_REJECT; case 3: /* incomplete */ warn("LL requested unsupported feature: Incomplete Number"); return ICALL_IGNORE; case 4: /* proceeding */ /* Gigaset will send ALERTING anyway. * There doesn't seem to be a way to avoid this. */ return ICALL_ACCEPT; case 5: /* deflect */ warn("LL requested unsupported feature: Call Deflection"); return ICALL_IGNORE; default: err("LL error %d on ICALL", retval); return ICALL_IGNORE; } } /* Set Callback function pointer */ int gigaset_register_to_LL(struct cardstate *cs, const char *isdnid) { isdn_if *iif = &cs->iif; dbg(DEBUG_ANY, "Register driver capabilities to LL"); //iif->id[sizeof(iif->id) - 1]=0; //strncpy(iif->id, isdnid, sizeof(iif->id) - 1); if (snprintf(iif->id, sizeof iif->id, "%s_%u", isdnid, cs->minor_index) >= sizeof iif->id) return -ENOMEM; //FIXME EINVAL/...?? iif->owner = THIS_MODULE; iif->channels = cs->channels; /* I am supporting just one channel *//* I was supporting...*/ iif->maxbufsize = MAX_BUF_SIZE; iif->features = ISDN_FEATURE_L2_TRANS | /* Our device is very advanced, therefore */ ISDN_FEATURE_L2_HDLC | #ifdef GIG_X75 ISDN_FEATURE_L2_X75I | #endif ISDN_FEATURE_L3_TRANS | ISDN_FEATURE_P_EURO; iif->hl_hdrlen = HW_HDR_LEN; /* Area for storing ack */ iif->command = command_from_LL; iif->writebuf_skb = writebuf_from_LL; iif->writecmd = NULL; /* Don't support isdnctrl */ iif->readstat = NULL; /* Don't support isdnctrl */ iif->rcvcallb_skb = NULL; /* Will be set by LL */ iif->statcallb = NULL; /* Will be set by LL */ if (!register_isdn(iif)) return 0; cs->myid = iif->channels; /* Set my device id */ return 1; }