diff options
Diffstat (limited to 'drivers/isdn/pcbit/drv.c')
| -rw-r--r-- | drivers/isdn/pcbit/drv.c | 1077 |
1 files changed, 0 insertions, 1077 deletions
diff --git a/drivers/isdn/pcbit/drv.c b/drivers/isdn/pcbit/drv.c deleted file mode 100644 index 4172e22ae..000000000 --- a/drivers/isdn/pcbit/drv.c +++ /dev/null @@ -1,1077 +0,0 @@ -/* - * 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/kernel.h> - -#include <linux/types.h> -#include <linux/sched.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 - */ - -static int pcbit_command(isdn_ctrl *ctl); -static int pcbit_stat(u_char __user *buf, int len, int, int); -static int pcbit_xmit(int driver, int chan, int ack, struct sk_buff *skb); -static 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); - - -int pcbit_init_dev(int board, int mem_base, int irq) -{ - struct pcbit_dev *dev; - isdn_if *dev_if; - - if ((dev = kzalloc(sizeof(struct pcbit_dev), GFP_KERNEL)) == NULL) - { - printk("pcbit_init: couldn't malloc pcbit_dev struct\n"); - return -ENOMEM; - } - - dev_pcbit[board] = 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 = kzalloc(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 = kzalloc(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; - } - - dev->b2->id = 1; - - INIT_WORK(&dev->qdelivery, pcbit_deliver); - - /* - * 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 - -static 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 - -static 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; -} - -static 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 = memdup_user(buf, len); - if (IS_ERR(cbuf)) - return PTR_ERR(cbuf); - - 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); - - kfree(cbdata.data.setup.CalledPN); - 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; - -static 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) - { - if (copy_to_user(buf, statbuf + stat_st, len)) - return -EFAULT; - stat_st += len; - } - else - { - if (len > STATBUF_LEN - stat_st) - { - if (copy_to_user(buf, statbuf + stat_st, - STATBUF_LEN - stat_st)) - return -EFAULT; - if (copy_to_user(buf, statbuf, - len - (STATBUF_LEN - stat_st))) - return -EFAULT; - - stat_st = len - (STATBUF_LEN - stat_st); - } - else - { - if (copy_to_user(buf, statbuf + stat_st, len)) - return -EFAULT; - - 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); -} - -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; - - dev->l2_state = L2_DOWN; - 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); - - wait_event(dev->set_running_wq, dev->l2_state == L2_RUNNING || - dev->l2_state == L2_DOWN); - - 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"); - -#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 + 1, GFP_ATOMIC); - if (!ptr->msn) { - printk(KERN_WARNING "kmalloc failed\n"); - kfree(ptr); - return; - } - - memcpy(ptr->msn, sp, len); - 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; -} |