forked from Minki/linux
[PATCH] isdn4linux: Siemens Gigaset drivers - isdn4linux interface
And: Tilman Schmidt <tilman@imap.cc> This patch adds the isdn4linux subsystem interface to the gigaset module. The isdn4linux subsystem interface handles requests from and notifications to the isdn4linux subsystem. Signed-off-by: Hansjoerg Lipp <hjlipp@web.de> Signed-off-by: Tilman Schmidt <tilman@imap.cc> Cc: Karsten Keil <kkeil@suse.de> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Hansjoerg Lipp
Linus Torvalds
parent
14fa73a75d
commit
3c66a22545
567
drivers/isdn/gigaset/i4l.c
Normal file
567
drivers/isdn/gigaset/i4l.c
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@ -0,0 +1,567 @@
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/*
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* Stuff used by all variants of the driver
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*
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* Copyright (c) 2001 by Stefan Eilers (Eilers.Stefan@epost.de),
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* Hansjoerg Lipp (hjlipp@web.de),
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* Tilman Schmidt (tilman@imap.cc).
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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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* ToDo: ...
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* =====================================================================
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* Version: $Id: i4l.c,v 1.3.2.9 2006/02/04 18:28:16 hjlipp Exp $
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* =====================================================================
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*/
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#include "gigaset.h"
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/* == Handling of I4L IO ============================================================================*/
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/* writebuf_from_LL
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* called by LL to transmit data on an open channel
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* inserts the buffer data into the send queue and starts the transmission
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* Note that this operation must not sleep!
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* When the buffer is processed completely, gigaset_skb_sent() should be called.
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* parameters:
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* driverID driver ID as assigned by LL
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* channel channel number
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* ack if != 0 LL wants to be notified on completion via statcallb(ISDN_STAT_BSENT)
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* skb skb containing data to send
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* return value:
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* number of accepted bytes
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* 0 if temporarily unable to accept data (out of buffer space)
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* <0 on error (eg. -EINVAL)
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*/
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static int writebuf_from_LL(int driverID, int channel, int ack, struct sk_buff *skb)
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{
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struct cardstate *cs;
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struct bc_state *bcs;
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unsigned len;
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unsigned skblen;
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if (!(cs = gigaset_get_cs_by_id(driverID))) {
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err("%s: invalid driver ID (%d)", __func__, driverID);
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return -ENODEV;
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}
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if (channel < 0 || channel >= cs->channels) {
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err("%s: invalid channel ID (%d)", __func__, channel);
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return -ENODEV;
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}
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bcs = &cs->bcs[channel];
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len = skb->len;
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dbg(DEBUG_LLDATA,
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"Receiving data from LL (id: %d, channel: %d, ack: %d, size: %d)",
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driverID, channel, ack, len);
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if (!len) {
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if (ack)
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warn("not ACKing empty packet from LL");
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return 0;
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}
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if (len > MAX_BUF_SIZE) {
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err("%s: packet too large (%d bytes)", __func__, channel);
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return -EINVAL;
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}
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if (!atomic_read(&cs->connected))
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return -ENODEV;
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skblen = ack ? len : 0;
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skb->head[0] = skblen & 0xff;
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skb->head[1] = skblen >> 8;
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dbg(DEBUG_MCMD, "skb: len=%u, skblen=%u: %02x %02x", len, skblen,
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(unsigned) skb->head[0], (unsigned) skb->head[1]);
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/* pass to device-specific module */
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return cs->ops->send_skb(bcs, skb);
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}
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void gigaset_skb_sent(struct bc_state *bcs, struct sk_buff *skb)
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{
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unsigned len;
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isdn_ctrl response;
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++bcs->trans_up;
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if (skb->len)
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warn("%s: skb->len==%d", __func__, skb->len);
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len = (unsigned char) skb->head[0] |
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(unsigned) (unsigned char) skb->head[1] << 8;
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if (len) {
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dbg(DEBUG_MCMD,
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"Acknowledge sending to LL (id: %d, channel: %d size: %u)",
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bcs->cs->myid, bcs->channel, len);
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response.driver = bcs->cs->myid;
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response.command = ISDN_STAT_BSENT;
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response.arg = bcs->channel;
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response.parm.length = len;
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bcs->cs->iif.statcallb(&response);
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}
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}
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EXPORT_SYMBOL_GPL(gigaset_skb_sent);
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/* This function will be called by LL to send commands
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* NOTE: LL ignores the returned value, for commands other than ISDN_CMD_IOCTL,
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* so don't put too much effort into it.
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*/
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static int command_from_LL(isdn_ctrl *cntrl)
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{
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struct cardstate *cs = gigaset_get_cs_by_id(cntrl->driver);
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//isdn_ctrl response;
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//unsigned long flags;
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struct bc_state *bcs;
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int retval = 0;
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struct setup_parm *sp;
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//dbg(DEBUG_ANY, "Gigaset_HW: Receiving command");
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gigaset_debugdrivers();
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/* Terminate this call if no device is present. Bt if the command is "ISDN_CMD_LOCK" or
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* "ISDN_CMD_UNLOCK" then execute it due to the fact that they are device independent !
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*/
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//FIXME "remove test for &connected"
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if ((!cs || !atomic_read(&cs->connected))) {
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warn("LL tried to access unknown device with nr. %d",
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cntrl->driver);
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return -ENODEV;
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}
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switch (cntrl->command) {
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case ISDN_CMD_IOCTL:
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dbg(DEBUG_ANY, "ISDN_CMD_IOCTL (driver:%d,arg: %ld)",
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cntrl->driver, cntrl->arg);
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warn("ISDN_CMD_IOCTL is not supported.");
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return -EINVAL;
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case ISDN_CMD_DIAL:
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dbg(DEBUG_ANY, "ISDN_CMD_DIAL (driver: %d, channel: %ld, "
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"phone: %s,ownmsn: %s, si1: %d, si2: %d)",
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cntrl->driver, cntrl->arg,
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cntrl->parm.setup.phone, cntrl->parm.setup.eazmsn,
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cntrl->parm.setup.si1, cntrl->parm.setup.si2);
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if (cntrl->arg >= cs->channels) {
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err("invalid channel (%d)", (int) cntrl->arg);
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return -EINVAL;
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}
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bcs = cs->bcs + cntrl->arg;
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if (!gigaset_get_channel(bcs)) {
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err("channel not free");
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return -EBUSY;
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}
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sp = kmalloc(sizeof *sp, GFP_ATOMIC);
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if (!sp) {
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gigaset_free_channel(bcs);
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err("ISDN_CMD_DIAL: out of memory");
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return -ENOMEM;
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}
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*sp = cntrl->parm.setup;
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if (!gigaset_add_event(cs, &bcs->at_state, EV_DIAL, sp,
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atomic_read(&bcs->at_state.seq_index),
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NULL)) {
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//FIXME what should we do?
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kfree(sp);
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gigaset_free_channel(bcs);
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return -ENOMEM;
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}
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dbg(DEBUG_CMD, "scheduling DIAL");
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gigaset_schedule_event(cs);
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break;
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case ISDN_CMD_ACCEPTD: //FIXME
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dbg(DEBUG_ANY, "ISDN_CMD_ACCEPTD");
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if (cntrl->arg >= cs->channels) {
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err("invalid channel (%d)", (int) cntrl->arg);
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return -EINVAL;
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}
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if (!gigaset_add_event(cs, &cs->bcs[cntrl->arg].at_state,
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EV_ACCEPT, NULL, 0, NULL)) {
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//FIXME what should we do?
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return -ENOMEM;
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}
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dbg(DEBUG_CMD, "scheduling ACCEPT");
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gigaset_schedule_event(cs);
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break;
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case ISDN_CMD_ACCEPTB:
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dbg(DEBUG_ANY, "ISDN_CMD_ACCEPTB");
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break;
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case ISDN_CMD_HANGUP:
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dbg(DEBUG_ANY,
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"ISDN_CMD_HANGUP (channel: %d)", (int) cntrl->arg);
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if (cntrl->arg >= cs->channels) {
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err("ISDN_CMD_HANGUP: invalid channel (%u)",
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(unsigned) cntrl->arg);
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return -EINVAL;
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}
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if (!gigaset_add_event(cs, &cs->bcs[cntrl->arg].at_state,
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EV_HUP, NULL, 0, NULL)) {
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//FIXME what should we do?
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return -ENOMEM;
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}
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dbg(DEBUG_CMD, "scheduling HUP");
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gigaset_schedule_event(cs);
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break;
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case ISDN_CMD_CLREAZ: /* Do not signal incoming signals */ //FIXME
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dbg(DEBUG_ANY, "ISDN_CMD_CLREAZ");
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break;
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case ISDN_CMD_SETEAZ: /* Signal incoming calls for given MSN */ //FIXME
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dbg(DEBUG_ANY,
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"ISDN_CMD_SETEAZ (id:%d, channel: %ld, number: %s)",
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cntrl->driver, cntrl->arg, cntrl->parm.num);
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break;
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case ISDN_CMD_SETL2: /* Set L2 to given protocol */
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dbg(DEBUG_ANY, "ISDN_CMD_SETL2 (Channel: %ld, Proto: %lx)",
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cntrl->arg & 0xff, (cntrl->arg >> 8));
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if ((cntrl->arg & 0xff) >= cs->channels) {
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err("invalid channel (%u)",
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(unsigned) cntrl->arg & 0xff);
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return -EINVAL;
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}
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if (!gigaset_add_event(cs, &cs->bcs[cntrl->arg & 0xff].at_state,
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EV_PROTO_L2, NULL, cntrl->arg >> 8,
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NULL)) {
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//FIXME what should we do?
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return -ENOMEM;
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}
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dbg(DEBUG_CMD, "scheduling PROTO_L2");
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gigaset_schedule_event(cs);
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break;
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case ISDN_CMD_SETL3: /* Set L3 to given protocol */
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dbg(DEBUG_ANY, "ISDN_CMD_SETL3 (Channel: %ld, Proto: %lx)",
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cntrl->arg & 0xff, (cntrl->arg >> 8));
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if ((cntrl->arg & 0xff) >= cs->channels) {
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err("invalid channel (%u)",
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(unsigned) cntrl->arg & 0xff);
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return -EINVAL;
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}
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if (cntrl->arg >> 8 != ISDN_PROTO_L3_TRANS) {
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err("invalid protocol %lu", cntrl->arg >> 8);
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return -EINVAL;
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}
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break;
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case ISDN_CMD_PROCEED:
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dbg(DEBUG_ANY, "ISDN_CMD_PROCEED"); //FIXME
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break;
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case ISDN_CMD_ALERT:
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dbg(DEBUG_ANY, "ISDN_CMD_ALERT"); //FIXME
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if (cntrl->arg >= cs->channels) {
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err("invalid channel (%d)", (int) cntrl->arg);
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return -EINVAL;
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}
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//bcs = cs->bcs + cntrl->arg;
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//bcs->proto2 = -1;
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// FIXME
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break;
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case ISDN_CMD_REDIR:
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dbg(DEBUG_ANY, "ISDN_CMD_REDIR"); //FIXME
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break;
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case ISDN_CMD_PROT_IO:
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dbg(DEBUG_ANY, "ISDN_CMD_PROT_IO");
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break;
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case ISDN_CMD_FAXCMD:
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dbg(DEBUG_ANY, "ISDN_CMD_FAXCMD");
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break;
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case ISDN_CMD_GETL2:
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dbg(DEBUG_ANY, "ISDN_CMD_GETL2");
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break;
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case ISDN_CMD_GETL3:
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dbg(DEBUG_ANY, "ISDN_CMD_GETL3");
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break;
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case ISDN_CMD_GETEAZ:
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dbg(DEBUG_ANY, "ISDN_CMD_GETEAZ");
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break;
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case ISDN_CMD_SETSIL:
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dbg(DEBUG_ANY, "ISDN_CMD_SETSIL");
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break;
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case ISDN_CMD_GETSIL:
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dbg(DEBUG_ANY, "ISDN_CMD_GETSIL");
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break;
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default:
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err("unknown command %d from LL",
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cntrl->command);
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return -EINVAL;
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}
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return retval;
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}
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void gigaset_i4l_cmd(struct cardstate *cs, int cmd)
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{
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isdn_ctrl command;
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command.driver = cs->myid;
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command.command = cmd;
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command.arg = 0;
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cs->iif.statcallb(&command);
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}
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void gigaset_i4l_channel_cmd(struct bc_state *bcs, int cmd)
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{
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isdn_ctrl command;
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command.driver = bcs->cs->myid;
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command.command = cmd;
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command.arg = bcs->channel;
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bcs->cs->iif.statcallb(&command);
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}
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int gigaset_isdn_setup_dial(struct at_state_t *at_state, void *data)
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{
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struct bc_state *bcs = at_state->bcs;
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unsigned proto;
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const char *bc;
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size_t length[AT_NUM];
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size_t l;
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int i;
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struct setup_parm *sp = data;
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switch (bcs->proto2) {
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case ISDN_PROTO_L2_HDLC:
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proto = 1; /* 0: Bitsynchron, 1: HDLC, 2: voice */
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break;
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case ISDN_PROTO_L2_TRANS:
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proto = 2; /* 0: Bitsynchron, 1: HDLC, 2: voice */
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break;
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default:
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err("invalid protocol: %u", bcs->proto2);
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return -EINVAL;
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}
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switch (sp->si1) {
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case 1: /* audio */
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bc = "9090A3"; /* 3.1 kHz audio, A-law */
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break;
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case 7: /* data */
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default: /* hope the app knows what it is doing */
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bc = "8890"; /* unrestricted digital information */
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}
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//FIXME add missing si1 values from 1TR6, inspect si2, set HLC/LLC
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length[AT_DIAL ] = 1 + strlen(sp->phone) + 1 + 1;
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l = strlen(sp->eazmsn);
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length[AT_MSN ] = l ? 6 + l + 1 + 1 : 0;
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length[AT_BC ] = 5 + strlen(bc) + 1 + 1;
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length[AT_PROTO] = 6 + 1 + 1 + 1; /* proto: 1 character */
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length[AT_ISO ] = 6 + 1 + 1 + 1; /* channel: 1 character */
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length[AT_TYPE ] = 6 + 1 + 1 + 1; /* call type: 1 character */
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length[AT_HLC ] = 0;
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for (i = 0; i < AT_NUM; ++i) {
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kfree(bcs->commands[i]);
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bcs->commands[i] = NULL;
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if (length[i] &&
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!(bcs->commands[i] = kmalloc(length[i], GFP_ATOMIC))) {
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err("out of memory");
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return -ENOMEM;
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}
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}
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/* type = 1: extern, 0: intern, 2: recall, 3: door, 4: centrex */
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if (sp->phone[0] == '*' && sp->phone[1] == '*') {
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/* internal call: translate ** prefix to CTP value */
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snprintf(bcs->commands[AT_DIAL], length[AT_DIAL],
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"D%s\r", sp->phone+2);
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strncpy(bcs->commands[AT_TYPE], "^SCTP=0\r", length[AT_TYPE]);
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} else {
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snprintf(bcs->commands[AT_DIAL], length[AT_DIAL],
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"D%s\r", sp->phone);
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strncpy(bcs->commands[AT_TYPE], "^SCTP=1\r", length[AT_TYPE]);
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}
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if (bcs->commands[AT_MSN])
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snprintf(bcs->commands[AT_MSN], length[AT_MSN], "^SMSN=%s\r", sp->eazmsn);
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snprintf(bcs->commands[AT_BC ], length[AT_BC ], "^SBC=%s\r", bc);
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snprintf(bcs->commands[AT_PROTO], length[AT_PROTO], "^SBPR=%u\r", proto);
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snprintf(bcs->commands[AT_ISO ], length[AT_ISO ], "^SISO=%u\r", (unsigned)bcs->channel + 1);
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return 0;
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}
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int gigaset_isdn_setup_accept(struct at_state_t *at_state)
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{
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unsigned proto;
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size_t length[AT_NUM];
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int i;
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struct bc_state *bcs = at_state->bcs;
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switch (bcs->proto2) {
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case ISDN_PROTO_L2_HDLC:
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proto = 1; /* 0: Bitsynchron, 1: HDLC, 2: voice */
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break;
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case ISDN_PROTO_L2_TRANS:
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proto = 2; /* 0: Bitsynchron, 1: HDLC, 2: voice */
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break;
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default:
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err("invalid protocol: %u", bcs->proto2);
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return -EINVAL;
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||||
}
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length[AT_DIAL ] = 0;
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length[AT_MSN ] = 0;
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length[AT_BC ] = 0;
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length[AT_PROTO] = 6 + 1 + 1 + 1; /* proto: 1 character */
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length[AT_ISO ] = 6 + 1 + 1 + 1; /* channel: 1 character */
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length[AT_TYPE ] = 0;
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length[AT_HLC ] = 0;
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for (i = 0; i < AT_NUM; ++i) {
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kfree(bcs->commands[i]);
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bcs->commands[i] = NULL;
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if (length[i] &&
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!(bcs->commands[i] = kmalloc(length[i], GFP_ATOMIC))) {
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err("out of memory");
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||||
return -ENOMEM;
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||||
}
|
||||
}
|
||||
|
||||
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;
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user