int reset(int card)
{
unsigned long flags;
if(!IS_VALID_CARD(card)) {
pr_debug("Invalid param: %d is not a valid card id\n", card);
return -ENODEV;
}
indicate_status(card, ISDN_STAT_STOP, 0, NULL);
if(sc_adapter[card]->EngineUp) {
del_timer(&sc_adapter[card]->stat_timer);
}
sc_adapter[card]->EngineUp = 0;
spin_lock_irqsave(&sc_adapter[card]->lock, flags);
init_timer(&sc_adapter[card]->reset_timer);
sc_adapter[card]->reset_timer.function = sc_check_reset;
sc_adapter[card]->reset_timer.data = card;
sc_adapter[card]->reset_timer.expires = jiffies + CHECKRESET_TIME;
add_timer(&sc_adapter[card]->reset_timer);
spin_unlock_irqrestore(&sc_adapter[card]->lock, flags);
outb(0x1,sc_adapter[card]->ioport[SFT_RESET]);
pr_debug("%s: Adapter Reset\n", sc_adapter[card]->devicename);
return 0;
}
/*
* Answer an incoming call
*/
static int answer(int card, unsigned long channel)
{
if(!IS_VALID_CARD(card)) {
pr_debug("Invalid param: %d is not a valid card id\n", card);
return -ENODEV;
}
if(setup_buffers(card, channel+1)) {
hangup(card, channel+1);
return -ENOBUFS;
}
indicate_status(card, ISDN_STAT_BCONN,channel,NULL);
pr_debug("%s: Answered incoming call on channel %lu\n",
sc_adapter[card]->devicename, channel+1);
return 0;
}
static int acceptb(int card, unsigned long channel)
{
if(!IS_VALID_CARD(card)) {
pr_debug("Invalid param: %d is not a valid card id\n", card);
return -ENODEV;
}
if(setup_buffers(card, channel+1))
{
hangup(card, channel+1);
return -ENOBUFS;
}
pr_debug("%s: B-Channel connection accepted on channel %lu\n",
sc_adapter[card]->devicename, channel+1);
indicate_status(card, ISDN_STAT_BCONN, channel, NULL);
return 0;
}
void interrupt_handler(int interrupt, void * cardptr, struct pt_regs *regs ) {
RspMessage rcvmsg;
int channel;
int card;
card = get_card_from_irq(interrupt);
if(!IS_VALID_CARD(card)) {
pr_debug("Invalid param: %d is not a valid card id\n", card);
return;
}
pr_debug("%s: Entered Interrupt handler\n", adapter[card]->devicename);
/*
* Pull all of the waiting messages off the response queue
*/
while (!receivemessage(card, &rcvmsg)) {
/*
* Push the message to the adapter structure for
* send_and_receive to snoop
*/
if(adapter[card]->want_async_messages)
memcpy(&(adapter[card]->async_msg), &rcvmsg, sizeof(RspMessage));
channel = (unsigned int) rcvmsg.phy_link_no;
/*
* Trap Invalid request messages
*/
if(IS_CM_MESSAGE(rcvmsg, 0, 0, Invalid)) {
pr_debug("%s: Invalid request Message, rsp_status = %d\n",
adapter[card]->devicename, rcvmsg.rsp_status);
break;
}
/*
* Check for a linkRead message
*/
if (IS_CE_MESSAGE(rcvmsg, Lnk, 1, Read))
{
pr_debug("%s: Received packet 0x%x bytes long at 0x%x\n",
adapter[card]->devicename,
rcvmsg.msg_data.response.msg_len,
rcvmsg.msg_data.response.buff_offset);
rcvpkt(card, &rcvmsg);
continue;
}
/*
* Handle a write acknoledgement
*/
if(IS_CE_MESSAGE(rcvmsg, Lnk, 1, Write)) {
pr_debug("%s: Packet Send ACK on channel %d\n", adapter[card]->devicename,
rcvmsg.phy_link_no);
adapter[card]->channel[rcvmsg.phy_link_no-1].free_sendbufs++;
continue;
}
/*
* Handle a connection message
*/
if (IS_CE_MESSAGE(rcvmsg, Phy, 1, Connect))
{
unsigned int callid;
setup_parm setup;
pr_debug("%s: Connect message: line %d: status %d: cause 0x%x\n",
adapter[card]->devicename,
rcvmsg.phy_link_no,
rcvmsg.rsp_status,
rcvmsg.msg_data.byte_array[2]);
memcpy(&callid,rcvmsg.msg_data.byte_array,sizeof(int));
if(callid>=0x8000 && callid<=0xFFFF)
{
pr_debug("%s: Got Dial-Out Rsp\n", adapter[card]->devicename);
indicate_status(card, ISDN_STAT_DCONN,
(unsigned long)rcvmsg.phy_link_no-1,NULL);
}
else if(callid>=0x0000 && callid<=0x7FFF)
{
pr_debug("%s: Got Incoming Call\n", adapter[card]->devicename);
strcpy(setup.phone,&(rcvmsg.msg_data.byte_array[4]));
strcpy(setup.eazmsn,adapter[card]->channel[rcvmsg.phy_link_no-1].dn);
setup.si1 = 7;
setup.si2 = 0;
setup.plan = 0;
setup.screen = 0;
indicate_status(card, ISDN_STAT_ICALL,(unsigned long)rcvmsg.phy_link_no-1,(char *)&setup);
indicate_status(card, ISDN_STAT_DCONN,(unsigned long)rcvmsg.phy_link_no-1,NULL);
}
continue;
}
/*
* Handle a disconnection message
*/
if (IS_CE_MESSAGE(rcvmsg, Phy, 1, Disconnect))
{
pr_debug("%s: disconnect message: line %d: status %d: cause 0x%x\n",
adapter[card]->devicename,
rcvmsg.phy_link_no,
rcvmsg.rsp_status,
rcvmsg.msg_data.byte_array[2]);
indicate_status(card, ISDN_STAT_BHUP,(unsigned long)rcvmsg.phy_link_no-1,NULL);
indicate_status(card, ISDN_STAT_DHUP,(unsigned long)rcvmsg.phy_link_no-1,NULL);
continue;
}
/*
* Handle a startProc engine up message
*/
if (IS_CM_MESSAGE(rcvmsg, 5, 0, MiscEngineUp)) {
pr_debug("%s: Received EngineUp message\n", adapter[card]->devicename);
adapter[card]->EngineUp = 1;
sendmessage(card, CEPID,ceReqTypeCall,ceReqClass0,ceReqCallGetMyNumber,1,0,NULL);
sendmessage(card, CEPID,ceReqTypeCall,ceReqClass0,ceReqCallGetMyNumber,2,0,NULL);
init_timer(&adapter[card]->stat_timer);
adapter[card]->stat_timer.function = check_phystat;
adapter[card]->stat_timer.data = card;
adapter[card]->stat_timer.expires = jiffies + CHECKSTAT_TIME;
add_timer(&adapter[card]->stat_timer);
continue;
}
/*
* Start proc response
*/
if (IS_CM_MESSAGE(rcvmsg, 2, 0, StartProc)) {
pr_debug("%s: StartProc Response Status %d\n", adapter[card]->devicename,
rcvmsg.rsp_status);
continue;
}
/*
* Handle a GetMyNumber Rsp
*/
if (IS_CE_MESSAGE(rcvmsg,Call,0,GetMyNumber)){
strcpy(adapter[card]->channel[rcvmsg.phy_link_no-1].dn,rcvmsg.msg_data.byte_array);
continue;
}
/*
* PhyStatus response
*/
if(IS_CE_MESSAGE(rcvmsg, Phy, 2, Status)) {
unsigned int b1stat, b2stat;
/*
* Covert the message data to the adapter->phystat code
*/
b1stat = (unsigned int) rcvmsg.msg_data.byte_array[0];
b2stat = (unsigned int) rcvmsg.msg_data.byte_array[1];
adapter[card]->nphystat = (b2stat >> 8) | b1stat; /* endian?? */
pr_debug("%s: PhyStat is 0x%2x\n", adapter[card]->devicename,
adapter[card]->nphystat);
continue;
}
/*
* Handle a GetFramFormat
*/
if(IS_CE_MESSAGE(rcvmsg, Call, 0, GetFrameFormat)) {
if(rcvmsg.msg_data.byte_array[0] != HDLC_PROTO) {
unsigned int proto = HDLC_PROTO;
/*
* Set board format to HDLC if it wasn't already
*/
pr_debug("%s: current frame format: 0x%x, will change to HDLC\n",
adapter[card]->devicename,
rcvmsg.msg_data.byte_array[0]);
sendmessage(card, CEPID, ceReqTypeCall,
ceReqClass0,
ceReqCallSetFrameFormat,
(unsigned char) channel +1,
1,&proto);
}
continue;
}
/*
* Hmm...
*/
pr_debug("%s: Received unhandled message (%d,%d,%d) link %d\n",
adapter[card]->devicename, rcvmsg.type, rcvmsg.class, rcvmsg.code,
rcvmsg.phy_link_no);
} /* while */
int sndpkt(int devId, int channel, struct sk_buff *data)
{
LLData ReqLnkWrite;
int status;
int card;
unsigned long len;
card = get_card_from_id(devId);
if(!IS_VALID_CARD(card)) {
pr_debug("invalid param: %d is not a valid card id\n", card);
return -ENODEV;
}
pr_debug("%s: sndpkt: frst = 0x%x nxt = %d f = %d n = %d\n",
adapter[card]->devicename,
adapter[card]->channel[channel].first_sendbuf,
adapter[card]->channel[channel].next_sendbuf,
adapter[card]->channel[channel].free_sendbufs,
adapter[card]->channel[channel].num_sendbufs);
if(!adapter[card]->channel[channel].free_sendbufs) {
pr_debug("%s: out of TX buffers\n", adapter[card]->devicename);
return -EINVAL;
}
if(data->len > BUFFER_SIZE) {
pr_debug("%s: data overflows buffer size (data > buffer)\n", adapter[card]->devicename);
return -EINVAL;
}
ReqLnkWrite.buff_offset = adapter[card]->channel[channel].next_sendbuf *
BUFFER_SIZE + adapter[card]->channel[channel].first_sendbuf;
ReqLnkWrite.msg_len = data->len; /* sk_buff size */
pr_debug("%s: writing %d bytes to buffer offset 0x%x\n", adapter[card]->devicename,
ReqLnkWrite.msg_len, ReqLnkWrite.buff_offset);
memcpy_toshmem(card, (char *)ReqLnkWrite.buff_offset, data->data, ReqLnkWrite.msg_len);
/*
* sendmessage
*/
pr_debug("%s: sndpkt size=%d, buf_offset=0x%x buf_indx=%d\n",
adapter[card]->devicename,
ReqLnkWrite.msg_len, ReqLnkWrite.buff_offset,
adapter[card]->channel[channel].next_sendbuf);
status = sendmessage(card, CEPID, ceReqTypeLnk, ceReqClass1, ceReqLnkWrite,
channel+1, sizeof(LLData), (unsigned int*)&ReqLnkWrite);
len = data->len;
if(status) {
pr_debug("%s: failed to send packet, status = %d\n", adapter[card]->devicename, status);
return -1;
}
else {
adapter[card]->channel[channel].free_sendbufs--;
adapter[card]->channel[channel].next_sendbuf =
++adapter[card]->channel[channel].next_sendbuf ==
adapter[card]->channel[channel].num_sendbufs ? 0 :
adapter[card]->channel[channel].next_sendbuf;
pr_debug("%s: packet sent successfully\n", adapter[card]->devicename);
dev_kfree_skb(data);
indicate_status(card,ISDN_STAT_BSENT,channel, (char *)&len);
}
return len;
}
