Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/isdn/pcbit/drv.c b/drivers/isdn/pcbit/drv.c
new file mode 100644
index 0000000..e98f9c4
--- /dev/null
+++ b/drivers/isdn/pcbit/drv.c
@@ -0,0 +1,1088 @@
+/*
+ * PCBIT-D interface with isdn4linux
+ *
+ * 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.
+ */
+
+/*
+ * Fixes:
+ *
+ * Nuno Grilo <l38486@alfa.ist.utl.pt>
+ * fixed msn_list NULL pointer dereference.
+ *
+ */
+
+#include <linux/module.h>
+
+#include <linux/sched.h>
+
+#include <linux/kernel.h>
+
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/mm.h>
+#include <linux/interrupt.h>
+#include <linux/string.h>
+#include <linux/skbuff.h>
+
+#include <linux/isdnif.h>
+#include <asm/string.h>
+#include <asm/io.h>
+#include <linux/ioport.h>
+
+#include "pcbit.h"
+#include "edss1.h"
+#include "layer2.h"
+#include "capi.h"
+
+
+extern ushort last_ref_num;
+
+static int pcbit_ioctl(isdn_ctrl* ctl);
+
+static char* pcbit_devname[MAX_PCBIT_CARDS] = {
+ "pcbit0",
+ "pcbit1",
+ "pcbit2",
+ "pcbit3"
+};
+
+/*
+ * prototypes
+ */
+
+int pcbit_command(isdn_ctrl* ctl);
+int pcbit_stat(u_char __user * buf, int len, int, int);
+int pcbit_xmit(int driver, int chan, int ack, struct sk_buff *skb);
+int pcbit_writecmd(const u_char __user *, int, int, int);
+
+static int set_protocol_running(struct pcbit_dev * dev);
+
+static void pcbit_clear_msn(struct pcbit_dev *dev);
+static void pcbit_set_msn(struct pcbit_dev *dev, char *list);
+static int pcbit_check_msn(struct pcbit_dev *dev, char *msn);
+
+
+extern void pcbit_deliver(void * data);
+
+int pcbit_init_dev(int board, int mem_base, int irq)
+{
+ struct pcbit_dev *dev;
+ isdn_if *dev_if;
+
+ if ((dev=kmalloc(sizeof(struct pcbit_dev), GFP_KERNEL)) == NULL)
+ {
+ printk("pcbit_init: couldn't malloc pcbit_dev struct\n");
+ return -ENOMEM;
+ }
+
+ dev_pcbit[board] = dev;
+ memset(dev, 0, sizeof(struct pcbit_dev));
+ init_waitqueue_head(&dev->set_running_wq);
+ spin_lock_init(&dev->lock);
+
+ if (mem_base >= 0xA0000 && mem_base <= 0xFFFFF ) {
+ dev->ph_mem = mem_base;
+ if (!request_mem_region(dev->ph_mem, 4096, "PCBIT mem")) {
+ printk(KERN_WARNING
+ "PCBIT: memory region %lx-%lx already in use\n",
+ dev->ph_mem, dev->ph_mem + 4096);
+ kfree(dev);
+ dev_pcbit[board] = NULL;
+ return -EACCES;
+ }
+ dev->sh_mem = ioremap(dev->ph_mem, 4096);
+ }
+ else
+ {
+ printk("memory address invalid");
+ kfree(dev);
+ dev_pcbit[board] = NULL;
+ return -EACCES;
+ }
+
+ dev->b1 = kmalloc(sizeof(struct pcbit_chan), GFP_KERNEL);
+ if (!dev->b1) {
+ printk("pcbit_init: couldn't malloc pcbit_chan struct\n");
+ iounmap(dev->sh_mem);
+ release_mem_region(dev->ph_mem, 4096);
+ kfree(dev);
+ return -ENOMEM;
+ }
+
+ dev->b2 = kmalloc(sizeof(struct pcbit_chan), GFP_KERNEL);
+ if (!dev->b2) {
+ printk("pcbit_init: couldn't malloc pcbit_chan struct\n");
+ kfree(dev->b1);
+ iounmap(dev->sh_mem);
+ release_mem_region(dev->ph_mem, 4096);
+ kfree(dev);
+ return -ENOMEM;
+ }
+
+ memset(dev->b1, 0, sizeof(struct pcbit_chan));
+ memset(dev->b2, 0, sizeof(struct pcbit_chan));
+ dev->b2->id = 1;
+
+ INIT_WORK(&dev->qdelivery, pcbit_deliver, dev);
+
+ /*
+ * interrupts
+ */
+
+ if (request_irq(irq, &pcbit_irq_handler, 0, pcbit_devname[board], dev) != 0)
+ {
+ kfree(dev->b1);
+ kfree(dev->b2);
+ iounmap(dev->sh_mem);
+ release_mem_region(dev->ph_mem, 4096);
+ kfree(dev);
+ dev_pcbit[board] = NULL;
+ return -EIO;
+ }
+
+ dev->irq = irq;
+
+ /* next frame to be received */
+ dev->rcv_seq = 0;
+ dev->send_seq = 0;
+ dev->unack_seq = 0;
+
+ dev->hl_hdrlen = 16;
+
+ dev_if = kmalloc(sizeof(isdn_if), GFP_KERNEL);
+
+ if (!dev_if) {
+ free_irq(irq, dev);
+ kfree(dev->b1);
+ kfree(dev->b2);
+ iounmap(dev->sh_mem);
+ release_mem_region(dev->ph_mem, 4096);
+ kfree(dev);
+ dev_pcbit[board] = NULL;
+ return -EIO;
+ }
+
+ dev->dev_if = dev_if;
+
+ dev_if->owner = THIS_MODULE;
+
+ dev_if->channels = 2;
+
+ dev_if->features = (ISDN_FEATURE_P_EURO | ISDN_FEATURE_L3_TRANS |
+ ISDN_FEATURE_L2_HDLC | ISDN_FEATURE_L2_TRANS );
+
+ dev_if->writebuf_skb = pcbit_xmit;
+ dev_if->hl_hdrlen = 16;
+
+ dev_if->maxbufsize = MAXBUFSIZE;
+ dev_if->command = pcbit_command;
+
+ dev_if->writecmd = pcbit_writecmd;
+ dev_if->readstat = pcbit_stat;
+
+
+ strcpy(dev_if->id, pcbit_devname[board]);
+
+ if (!register_isdn(dev_if)) {
+ free_irq(irq, dev);
+ kfree(dev->b1);
+ kfree(dev->b2);
+ iounmap(dev->sh_mem);
+ release_mem_region(dev->ph_mem, 4096);
+ kfree(dev);
+ dev_pcbit[board] = NULL;
+ return -EIO;
+ }
+
+ dev->id = dev_if->channels;
+
+
+ dev->l2_state = L2_DOWN;
+ dev->free = 511;
+
+ /*
+ * set_protocol_running(dev);
+ */
+
+ return 0;
+}
+
+#ifdef MODULE
+void pcbit_terminate(int board)
+{
+ struct pcbit_dev * dev;
+
+ dev = dev_pcbit[board];
+
+ if (dev) {
+ /* unregister_isdn(dev->dev_if); */
+ free_irq(dev->irq, dev);
+ pcbit_clear_msn(dev);
+ kfree(dev->dev_if);
+ if (dev->b1->fsm_timer.function)
+ del_timer(&dev->b1->fsm_timer);
+ if (dev->b2->fsm_timer.function)
+ del_timer(&dev->b2->fsm_timer);
+ kfree(dev->b1);
+ kfree(dev->b2);
+ iounmap(dev->sh_mem);
+ release_mem_region(dev->ph_mem, 4096);
+ kfree(dev);
+ }
+}
+#endif
+
+int pcbit_command(isdn_ctrl* ctl)
+{
+ struct pcbit_dev *dev;
+ struct pcbit_chan *chan;
+ struct callb_data info;
+
+ dev = finddev(ctl->driver);
+
+ if (!dev)
+ {
+ printk("pcbit_command: unknown device\n");
+ return -1;
+ }
+
+ chan = (ctl->arg & 0x0F) ? dev->b2 : dev->b1;
+
+
+ switch(ctl->command) {
+ case ISDN_CMD_IOCTL:
+ return pcbit_ioctl(ctl);
+ break;
+ case ISDN_CMD_DIAL:
+ info.type = EV_USR_SETUP_REQ;
+ info.data.setup.CalledPN = (char *) &ctl->parm.setup.phone;
+ pcbit_fsm_event(dev, chan, EV_USR_SETUP_REQ, &info);
+ break;
+ case ISDN_CMD_ACCEPTD:
+ pcbit_fsm_event(dev, chan, EV_USR_SETUP_RESP, NULL);
+ break;
+ case ISDN_CMD_ACCEPTB:
+ printk("ISDN_CMD_ACCEPTB - not really needed\n");
+ break;
+ case ISDN_CMD_HANGUP:
+ pcbit_fsm_event(dev, chan, EV_USR_RELEASE_REQ, NULL);
+ break;
+ case ISDN_CMD_SETL2:
+ chan->proto = (ctl->arg >> 8);
+ break;
+ case ISDN_CMD_CLREAZ:
+ pcbit_clear_msn(dev);
+ break;
+ case ISDN_CMD_SETEAZ:
+ pcbit_set_msn(dev, ctl->parm.num);
+ break;
+ case ISDN_CMD_SETL3:
+ if ((ctl->arg >> 8) != ISDN_PROTO_L3_TRANS)
+ printk(KERN_DEBUG "L3 protocol unknown\n");
+ break;
+ default:
+ printk(KERN_DEBUG "pcbit_command: unknown command\n");
+ break;
+ };
+
+ return 0;
+}
+
+/*
+ * Another Hack :-(
+ * on some conditions the board stops sending TDATA_CONFs
+ * let's see if we can turn around the problem
+ */
+
+#ifdef BLOCK_TIMER
+static void pcbit_block_timer(unsigned long data)
+{
+ struct pcbit_chan *chan;
+ struct pcbit_dev * dev;
+ isdn_ctrl ictl;
+
+ chan = (struct pcbit_chan *) data;
+
+ dev = chan2dev(chan);
+
+ if (dev == NULL) {
+ printk(KERN_DEBUG "pcbit: chan2dev failed\n");
+ return;
+ }
+
+ del_timer(&chan->block_timer);
+ chan->block_timer.function = NULL;
+
+#ifdef DEBUG
+ printk(KERN_DEBUG "pcbit_block_timer\n");
+#endif
+ chan->queued = 0;
+ ictl.driver = dev->id;
+ ictl.command = ISDN_STAT_BSENT;
+ ictl.arg = chan->id;
+ dev->dev_if->statcallb(&ictl);
+}
+#endif
+
+int pcbit_xmit(int driver, int chnum, int ack, struct sk_buff *skb)
+{
+ ushort hdrlen;
+ int refnum, len;
+ struct pcbit_chan * chan;
+ struct pcbit_dev *dev;
+
+ dev = finddev(driver);
+ if (dev == NULL)
+ {
+ printk("finddev returned NULL");
+ return -1;
+ }
+
+ chan = chnum ? dev->b2 : dev->b1;
+
+
+ if (chan->fsm_state != ST_ACTIVE)
+ return -1;
+
+ if (chan->queued >= MAX_QUEUED )
+ {
+#ifdef DEBUG_QUEUE
+ printk(KERN_DEBUG
+ "pcbit: %d packets already in queue - write fails\n",
+ chan->queued);
+#endif
+ /*
+ * packet stays on the head of the device queue
+ * since dev_start_xmit will fail
+ * see net/core/dev.c
+ */
+#ifdef BLOCK_TIMER
+ if (chan->block_timer.function == NULL) {
+ init_timer(&chan->block_timer);
+ chan->block_timer.function = &pcbit_block_timer;
+ chan->block_timer.data = (long) chan;
+ chan->block_timer.expires = jiffies + 1 * HZ;
+ add_timer(&chan->block_timer);
+ }
+#endif
+ return 0;
+ }
+
+
+ chan->queued++;
+
+ len = skb->len;
+
+ hdrlen = capi_tdata_req(chan, skb);
+
+ refnum = last_ref_num++ & 0x7fffU;
+ chan->s_refnum = refnum;
+
+ pcbit_l2_write(dev, MSG_TDATA_REQ, refnum, skb, hdrlen);
+
+ return len;
+}
+
+int pcbit_writecmd(const u_char __user *buf, int len, int driver, int channel)
+{
+ struct pcbit_dev * dev;
+ int i, j;
+ const u_char * loadbuf;
+ u_char * ptr = NULL;
+ u_char *cbuf;
+
+ int errstat;
+
+ dev = finddev(driver);
+
+ if (!dev)
+ {
+ printk("pcbit_writecmd: couldn't find device");
+ return -ENODEV;
+ }
+
+ switch(dev->l2_state) {
+ case L2_LWMODE:
+ /* check (size <= rdp_size); write buf into board */
+ if (len < 0 || len > BANK4 + 1 || len > 1024)
+ {
+ printk("pcbit_writecmd: invalid length %d\n", len);
+ return -EINVAL;
+ }
+
+ cbuf = kmalloc(len, GFP_KERNEL);
+ if (!cbuf)
+ return -ENOMEM;
+
+ if (copy_from_user(cbuf, buf, len)) {
+ kfree(cbuf);
+ return -EFAULT;
+ }
+ memcpy_toio(dev->sh_mem, cbuf, len);
+ kfree(cbuf);
+ return len;
+ case L2_FWMODE:
+ /* this is the hard part */
+ /* dumb board */
+ /* get it into kernel space */
+ if ((ptr = kmalloc(len, GFP_KERNEL))==NULL)
+ return -ENOMEM;
+ if (copy_from_user(ptr, buf, len)) {
+ kfree(ptr);
+ return -EFAULT;
+ }
+ loadbuf = ptr;
+
+ errstat = 0;
+
+ for (i=0; i < len; i++)
+ {
+ for(j=0; j < LOAD_RETRY; j++)
+ if (!(readb(dev->sh_mem + dev->loadptr)))
+ break;
+
+ if (j == LOAD_RETRY)
+ {
+ errstat = -ETIME;
+ printk("TIMEOUT i=%d\n", i);
+ break;
+ }
+ writeb(loadbuf[i], dev->sh_mem + dev->loadptr + 1);
+ writeb(0x01, dev->sh_mem + dev->loadptr);
+
+ dev->loadptr += 2;
+ if (dev->loadptr > LOAD_ZONE_END)
+ dev->loadptr = LOAD_ZONE_START;
+ }
+ kfree(ptr);
+
+ return errstat ? errstat : len;
+ default:
+ return -EBUSY;
+ }
+}
+
+/*
+ * demultiplexing of messages
+ *
+ */
+
+void pcbit_l3_receive(struct pcbit_dev * dev, ulong msg,
+ struct sk_buff * skb,
+ ushort hdr_len, ushort refnum)
+{
+ struct pcbit_chan *chan;
+ struct sk_buff *skb2;
+ unsigned short len;
+ struct callb_data cbdata;
+ int complete, err;
+ isdn_ctrl ictl;
+
+ switch(msg) {
+
+ case MSG_TDATA_IND:
+ if (!(chan = capi_channel(dev, skb))) {
+ printk(KERN_WARNING
+ "CAPI header: unknown channel id\n");
+ break;
+ }
+ chan->r_refnum = skb->data[7];
+ skb_pull(skb, 8);
+
+ dev->dev_if->rcvcallb_skb(dev->id, chan->id, skb);
+
+ if (capi_tdata_resp(chan, &skb2) > 0)
+ pcbit_l2_write(dev, MSG_TDATA_RESP, refnum,
+ skb2, skb2->len);
+ return;
+ break;
+ case MSG_TDATA_CONF:
+ if (!(chan = capi_channel(dev, skb))) {
+ printk(KERN_WARNING
+ "CAPI header: unknown channel id\n");
+ break;
+ }
+
+#ifdef DEBUG
+ if ( (*((ushort *) (skb->data + 2) )) != 0) {
+ printk(KERN_DEBUG "TDATA_CONF error\n");
+ }
+#endif
+#ifdef BLOCK_TIMER
+ if (chan->queued == MAX_QUEUED) {
+ del_timer(&chan->block_timer);
+ chan->block_timer.function = NULL;
+ }
+
+#endif
+ chan->queued--;
+
+ ictl.driver = dev->id;
+ ictl.command = ISDN_STAT_BSENT;
+ ictl.arg = chan->id;
+ dev->dev_if->statcallb(&ictl);
+ break;
+
+ case MSG_CONN_IND:
+ /*
+ * channel: 1st not used will do
+ * if both are used we're in trouble
+ */
+
+ if (!dev->b1->fsm_state)
+ chan = dev->b1;
+ else if (!dev->b2->fsm_state)
+ chan = dev->b2;
+ else {
+ printk(KERN_INFO
+ "Incoming connection: no channels available");
+
+ if ((len = capi_disc_req(*(ushort*)(skb->data), &skb2, CAUSE_NOCHAN)) > 0)
+ pcbit_l2_write(dev, MSG_DISC_REQ, refnum, skb2, len);
+ break;
+ }
+
+ cbdata.data.setup.CalledPN = NULL;
+ cbdata.data.setup.CallingPN = NULL;
+
+ capi_decode_conn_ind(chan, skb, &cbdata);
+ cbdata.type = EV_NET_SETUP;
+
+ pcbit_fsm_event(dev, chan, EV_NET_SETUP, NULL);
+
+ if (pcbit_check_msn(dev, cbdata.data.setup.CallingPN))
+ pcbit_fsm_event(dev, chan, EV_USR_PROCED_REQ, &cbdata);
+ else
+ pcbit_fsm_event(dev, chan, EV_USR_RELEASE_REQ, NULL);
+
+ if (cbdata.data.setup.CalledPN)
+ kfree(cbdata.data.setup.CalledPN);
+ if (cbdata.data.setup.CallingPN)
+ kfree(cbdata.data.setup.CallingPN);
+ break;
+
+ case MSG_CONN_CONF:
+ /*
+ * We should be able to find the channel by the message
+ * reference number. The current version of the firmware
+ * doesn't sent the ref number correctly.
+ */
+#ifdef DEBUG
+ printk(KERN_DEBUG "refnum=%04x b1=%04x b2=%04x\n", refnum,
+ dev->b1->s_refnum,
+ dev->b2->s_refnum);
+#endif
+ /* We just try to find a channel in the right state */
+
+ if (dev->b1->fsm_state == ST_CALL_INIT)
+ chan = dev->b1;
+ else {
+ if (dev->b2->s_refnum == ST_CALL_INIT)
+ chan = dev->b2;
+ else {
+ chan = NULL;
+ printk(KERN_WARNING "Connection Confirm - no channel in Call Init state\n");
+ break;
+ }
+ }
+ if (capi_decode_conn_conf(chan, skb, &complete)) {
+ printk(KERN_DEBUG "conn_conf indicates error\n");
+ pcbit_fsm_event(dev, chan, EV_ERROR, NULL);
+ }
+ else
+ if (complete)
+ pcbit_fsm_event(dev, chan, EV_NET_CALL_PROC, NULL);
+ else
+ pcbit_fsm_event(dev, chan, EV_NET_SETUP_ACK, NULL);
+ break;
+ case MSG_CONN_ACTV_IND:
+
+ if (!(chan = capi_channel(dev, skb))) {
+ printk(KERN_WARNING
+ "CAPI header: unknown channel id\n");
+ break;
+ }
+
+ if (capi_decode_conn_actv_ind(chan, skb)) {
+ printk("error in capi_decode_conn_actv_ind\n");
+ /* pcbit_fsm_event(dev, chan, EV_ERROR, NULL); */
+ break;
+ }
+ chan->r_refnum = refnum;
+ pcbit_fsm_event(dev, chan, EV_NET_CONN, NULL);
+ break;
+ case MSG_CONN_ACTV_CONF:
+
+ if (!(chan = capi_channel(dev, skb))) {
+ printk(KERN_WARNING
+ "CAPI header: unknown channel id\n");
+ break;
+ }
+
+ if (capi_decode_conn_actv_conf(chan, skb) == 0)
+ pcbit_fsm_event(dev, chan, EV_NET_CONN_ACK, NULL);
+
+ else
+ printk(KERN_DEBUG "decode_conn_actv_conf failed\n");
+ break;
+
+ case MSG_SELP_CONF:
+
+ if (!(chan = capi_channel(dev, skb))) {
+ printk(KERN_WARNING
+ "CAPI header: unknown channel id\n");
+ break;
+ }
+
+ if (!(err = capi_decode_sel_proto_conf(chan, skb)))
+ pcbit_fsm_event(dev, chan, EV_NET_SELP_RESP, NULL);
+ else {
+ /* Error */
+ printk("error %d - capi_decode_sel_proto_conf\n", err);
+ }
+ break;
+ case MSG_ACT_TRANSP_CONF:
+ if (!(chan = capi_channel(dev, skb))) {
+ printk(KERN_WARNING
+ "CAPI header: unknown channel id\n");
+ break;
+ }
+
+ if (!capi_decode_actv_trans_conf(chan, skb))
+ pcbit_fsm_event(dev, chan, EV_NET_ACTV_RESP, NULL);
+ break;
+
+ case MSG_DISC_IND:
+
+ if (!(chan = capi_channel(dev, skb))) {
+ printk(KERN_WARNING
+ "CAPI header: unknown channel id\n");
+ break;
+ }
+
+ if (!capi_decode_disc_ind(chan, skb))
+ pcbit_fsm_event(dev, chan, EV_NET_DISC, NULL);
+ else
+ printk(KERN_WARNING "capi_decode_disc_ind - error\n");
+ break;
+ case MSG_DISC_CONF:
+ if (!(chan = capi_channel(dev, skb))) {
+ printk(KERN_WARNING
+ "CAPI header: unknown channel id\n");
+ break;
+ }
+
+ if (!capi_decode_disc_ind(chan, skb))
+ pcbit_fsm_event(dev, chan, EV_NET_RELEASE, NULL);
+ else
+ printk(KERN_WARNING "capi_decode_disc_conf - error\n");
+ break;
+ case MSG_INFO_IND:
+#ifdef DEBUG
+ printk(KERN_DEBUG "received Info Indication - discarded\n");
+#endif
+ break;
+#ifdef DEBUG
+ case MSG_DEBUG_188:
+ capi_decode_debug_188(skb->data, skb->len);
+ break;
+
+ default:
+ printk(KERN_DEBUG "pcbit_l3_receive: unknown message %08lx\n",
+ msg);
+ break;
+#endif
+ }
+
+ kfree_skb(skb);
+
+}
+
+/*
+ * Single statbuf
+ * should be a statbuf per device
+ */
+
+static char statbuf[STATBUF_LEN];
+static int stat_st = 0;
+static int stat_end = 0;
+
+int pcbit_stat(u_char __user *buf, int len, int driver, int channel)
+{
+ int stat_count;
+ stat_count = stat_end - stat_st;
+
+ if (stat_count < 0)
+ stat_count = STATBUF_LEN - stat_st + stat_end;
+
+ /* FIXME: should we sleep and wait for more cookies ? */
+ if (len > stat_count)
+ len = stat_count;
+
+ if (stat_st < stat_end)
+ {
+ copy_to_user(buf, statbuf + stat_st, len);
+ stat_st += len;
+ }
+ else
+ {
+ if (len > STATBUF_LEN - stat_st)
+ {
+ copy_to_user(buf, statbuf + stat_st,
+ STATBUF_LEN - stat_st);
+ copy_to_user(buf, statbuf,
+ len - (STATBUF_LEN - stat_st));
+
+ stat_st = len - (STATBUF_LEN - stat_st);
+ }
+ else
+ {
+ copy_to_user(buf, statbuf + stat_st, len);
+
+ stat_st += len;
+
+ if (stat_st == STATBUF_LEN)
+ stat_st = 0;
+ }
+ }
+
+ if (stat_st == stat_end)
+ stat_st = stat_end = 0;
+
+ return len;
+}
+
+static void pcbit_logstat(struct pcbit_dev *dev, char *str)
+{
+ int i;
+ isdn_ctrl ictl;
+
+ for (i=stat_end; i<strlen(str); i++)
+ {
+ statbuf[i]=str[i];
+ stat_end = (stat_end + 1) % STATBUF_LEN;
+ if (stat_end == stat_st)
+ stat_st = (stat_st + 1) % STATBUF_LEN;
+ }
+
+ ictl.command=ISDN_STAT_STAVAIL;
+ ictl.driver=dev->id;
+ ictl.arg=strlen(str);
+ dev->dev_if->statcallb(&ictl);
+}
+
+extern char * isdn_state_table[];
+extern char * strisdnevent(unsigned short);
+
+
+void pcbit_state_change(struct pcbit_dev * dev, struct pcbit_chan * chan,
+ unsigned short i, unsigned short ev, unsigned short f)
+{
+ char buf[256];
+
+ sprintf(buf, "change on device: %d channel:%d\n%s -> %s -> %s\n",
+ dev->id, chan->id,
+ isdn_state_table[i], strisdnevent(ev), isdn_state_table[f]
+ );
+
+#ifdef DEBUG
+ printk("%s", buf);
+#endif
+
+ pcbit_logstat(dev, buf);
+}
+
+static void set_running_timeout(unsigned long ptr)
+{
+ struct pcbit_dev * dev;
+
+#ifdef DEBUG
+ printk(KERN_DEBUG "set_running_timeout\n");
+#endif
+ dev = (struct pcbit_dev *) ptr;
+
+ wake_up_interruptible(&dev->set_running_wq);
+}
+
+static int set_protocol_running(struct pcbit_dev * dev)
+{
+ isdn_ctrl ctl;
+
+ init_timer(&dev->set_running_timer);
+
+ dev->set_running_timer.function = &set_running_timeout;
+ dev->set_running_timer.data = (ulong) dev;
+ dev->set_running_timer.expires = jiffies + SET_RUN_TIMEOUT;
+
+ /* kick it */
+
+ dev->l2_state = L2_STARTING;
+
+ writeb((0x80U | ((dev->rcv_seq & 0x07) << 3) | (dev->send_seq & 0x07)),
+ dev->sh_mem + BANK4);
+
+ add_timer(&dev->set_running_timer);
+
+ interruptible_sleep_on(&dev->set_running_wq);
+
+ del_timer(&dev->set_running_timer);
+
+ if (dev->l2_state == L2_RUNNING)
+ {
+ printk(KERN_DEBUG "pcbit: running\n");
+
+ dev->unack_seq = dev->send_seq;
+
+ dev->writeptr = dev->sh_mem;
+ dev->readptr = dev->sh_mem + BANK2;
+
+ /* tell the good news to the upper layer */
+ ctl.driver = dev->id;
+ ctl.command = ISDN_STAT_RUN;
+
+ dev->dev_if->statcallb(&ctl);
+ }
+ else
+ {
+ printk(KERN_DEBUG "pcbit: initialization failed\n");
+ printk(KERN_DEBUG "pcbit: firmware not loaded\n");
+
+ dev->l2_state = L2_DOWN;
+
+#ifdef DEBUG
+ printk(KERN_DEBUG "Bank3 = %02x\n",
+ readb(dev->sh_mem + BANK3));
+#endif
+ writeb(0x40, dev->sh_mem + BANK4);
+
+ /* warn the upper layer */
+ ctl.driver = dev->id;
+ ctl.command = ISDN_STAT_STOP;
+
+ dev->dev_if->statcallb(&ctl);
+
+ return -EL2HLT; /* Level 2 halted */
+ }
+
+ return 0;
+}
+
+static int pcbit_ioctl(isdn_ctrl* ctl)
+{
+ struct pcbit_dev * dev;
+ struct pcbit_ioctl *cmd;
+
+ dev = finddev(ctl->driver);
+
+ if (!dev)
+ {
+ printk(KERN_DEBUG "pcbit_ioctl: unknown device\n");
+ return -ENODEV;
+ }
+
+ cmd = (struct pcbit_ioctl *) ctl->parm.num;
+
+ switch(ctl->arg) {
+ case PCBIT_IOCTL_GETSTAT:
+ cmd->info.l2_status = dev->l2_state;
+ break;
+
+ case PCBIT_IOCTL_STRLOAD:
+ if (dev->l2_state == L2_RUNNING)
+ return -EBUSY;
+
+ dev->unack_seq = dev->send_seq = dev->rcv_seq = 0;
+
+ dev->writeptr = dev->sh_mem;
+ dev->readptr = dev->sh_mem + BANK2;
+
+ dev->l2_state = L2_LOADING;
+ break;
+
+ case PCBIT_IOCTL_LWMODE:
+ if (dev->l2_state != L2_LOADING)
+ return -EINVAL;
+
+ dev->l2_state = L2_LWMODE;
+ break;
+
+ case PCBIT_IOCTL_FWMODE:
+ if (dev->l2_state == L2_RUNNING)
+ return -EBUSY;
+ dev->loadptr = LOAD_ZONE_START;
+ dev->l2_state = L2_FWMODE;
+
+ break;
+ case PCBIT_IOCTL_ENDLOAD:
+ if (dev->l2_state == L2_RUNNING)
+ return -EBUSY;
+ dev->l2_state = L2_DOWN;
+ break;
+
+ case PCBIT_IOCTL_SETBYTE:
+ if (dev->l2_state == L2_RUNNING)
+ return -EBUSY;
+
+ /* check addr */
+ if (cmd->info.rdp_byte.addr > BANK4)
+ return -EFAULT;
+
+ writeb(cmd->info.rdp_byte.value, dev->sh_mem + cmd->info.rdp_byte.addr);
+ break;
+ case PCBIT_IOCTL_GETBYTE:
+ if (dev->l2_state == L2_RUNNING)
+ return -EBUSY;
+
+ /* check addr */
+
+ if (cmd->info.rdp_byte.addr > BANK4)
+ {
+ printk("getbyte: invalid addr %04x\n", cmd->info.rdp_byte.addr);
+ return -EFAULT;
+ }
+
+ cmd->info.rdp_byte.value = readb(dev->sh_mem + cmd->info.rdp_byte.addr);
+ break;
+ case PCBIT_IOCTL_RUNNING:
+ if (dev->l2_state == L2_RUNNING)
+ return -EBUSY;
+ return set_protocol_running(dev);
+ break;
+ case PCBIT_IOCTL_WATCH188:
+ if (dev->l2_state != L2_LOADING)
+ return -EINVAL;
+ pcbit_l2_write(dev, MSG_WATCH188, 0x0001, NULL, 0);
+ break;
+ case PCBIT_IOCTL_PING188:
+ if (dev->l2_state != L2_LOADING)
+ return -EINVAL;
+ pcbit_l2_write(dev, MSG_PING188_REQ, 0x0001, NULL, 0);
+ break;
+ case PCBIT_IOCTL_APION:
+ if (dev->l2_state != L2_LOADING)
+ return -EINVAL;
+ pcbit_l2_write(dev, MSG_API_ON, 0x0001, NULL, 0);
+ break;
+ case PCBIT_IOCTL_STOP:
+ dev->l2_state = L2_DOWN;
+ writeb(0x40, dev->sh_mem + BANK4);
+ dev->rcv_seq = 0;
+ dev->send_seq = 0;
+ dev->unack_seq = 0;
+ break;
+ default:
+ printk("error: unknown ioctl\n");
+ break;
+ };
+ return 0;
+}
+
+/*
+ * MSN list handling
+ *
+ * if null reject all calls
+ * if first entry has null MSN accept all calls
+ */
+
+static void pcbit_clear_msn(struct pcbit_dev *dev)
+{
+ struct msn_entry *ptr, *back;
+
+ for (ptr=dev->msn_list; ptr; )
+ {
+ back = ptr->next;
+ kfree(ptr);
+ ptr = back;
+ }
+
+ dev->msn_list = NULL;
+}
+
+static void pcbit_set_msn(struct pcbit_dev *dev, char *list)
+{
+ struct msn_entry *ptr;
+ struct msn_entry *back = NULL;
+ char *cp, *sp;
+ int len;
+
+ if (strlen(list) == 0) {
+ ptr = kmalloc(sizeof(struct msn_entry), GFP_ATOMIC);
+ if (!ptr) {
+ printk(KERN_WARNING "kmalloc failed\n");
+ return;
+ }
+
+ ptr->msn = NULL;
+
+ ptr->next = dev->msn_list;
+ dev->msn_list = ptr;
+
+ return;
+ }
+
+ if (dev->msn_list)
+ for (back=dev->msn_list; back->next; back=back->next);
+
+ sp = list;
+
+ do {
+ cp=strchr(sp, ',');
+ if (cp)
+ len = cp - sp;
+ else
+ len = strlen(sp);
+
+ ptr = kmalloc(sizeof(struct msn_entry), GFP_ATOMIC);
+
+ if (!ptr) {
+ printk(KERN_WARNING "kmalloc failed\n");
+ return;
+ }
+ ptr->next = NULL;
+
+ ptr->msn = kmalloc(len, GFP_ATOMIC);
+ if (!ptr->msn) {
+ printk(KERN_WARNING "kmalloc failed\n");
+ kfree(ptr);
+ return;
+ }
+
+ memcpy(ptr->msn, sp, len - 1);
+ ptr->msn[len] = 0;
+
+#ifdef DEBUG
+ printk(KERN_DEBUG "msn: %s\n", ptr->msn);
+#endif
+ if (dev->msn_list == NULL)
+ dev->msn_list = ptr;
+ else
+ back->next = ptr;
+ back = ptr;
+ sp += len;
+ } while(cp);
+}
+
+/*
+ * check if we do signal or reject an incoming call
+ */
+static int pcbit_check_msn(struct pcbit_dev *dev, char *msn)
+{
+ struct msn_entry *ptr;
+
+ for (ptr=dev->msn_list; ptr; ptr=ptr->next) {
+
+ if (ptr->msn == NULL)
+ return 1;
+
+ if (strcmp(ptr->msn, msn) == 0)
+ return 1;
+ }
+
+ return 0;
+}
