406 lines
9.3 KiB
C
406 lines
9.3 KiB
C
/*
|
|
*
|
|
* Author Karsten Keil <kkeil@novell.com>
|
|
*
|
|
* Copyright 2008 by Karsten Keil <kkeil@novell.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
*/
|
|
|
|
|
|
#include <linux/slab.h>
|
|
#include <linux/module.h>
|
|
#include <linux/mISDNhw.h>
|
|
#include "core.h"
|
|
#include "layer1.h"
|
|
#include "fsm.h"
|
|
|
|
static u_int *debug;
|
|
|
|
struct layer1 {
|
|
u_long Flags;
|
|
struct FsmInst l1m;
|
|
struct FsmTimer timer;
|
|
int delay;
|
|
struct dchannel *dch;
|
|
dchannel_l1callback *dcb;
|
|
};
|
|
|
|
#define TIMER3_VALUE 7000
|
|
|
|
static
|
|
struct Fsm l1fsm_s = {NULL, 0, 0, NULL, NULL};
|
|
|
|
enum {
|
|
ST_L1_F2,
|
|
ST_L1_F3,
|
|
ST_L1_F4,
|
|
ST_L1_F5,
|
|
ST_L1_F6,
|
|
ST_L1_F7,
|
|
ST_L1_F8,
|
|
};
|
|
|
|
#define L1S_STATE_COUNT (ST_L1_F8+1)
|
|
|
|
static char *strL1SState[] =
|
|
{
|
|
"ST_L1_F2",
|
|
"ST_L1_F3",
|
|
"ST_L1_F4",
|
|
"ST_L1_F5",
|
|
"ST_L1_F6",
|
|
"ST_L1_F7",
|
|
"ST_L1_F8",
|
|
};
|
|
|
|
enum {
|
|
EV_PH_ACTIVATE,
|
|
EV_PH_DEACTIVATE,
|
|
EV_RESET_IND,
|
|
EV_DEACT_CNF,
|
|
EV_DEACT_IND,
|
|
EV_POWER_UP,
|
|
EV_ANYSIG_IND,
|
|
EV_INFO2_IND,
|
|
EV_INFO4_IND,
|
|
EV_TIMER_DEACT,
|
|
EV_TIMER_ACT,
|
|
EV_TIMER3,
|
|
};
|
|
|
|
#define L1_EVENT_COUNT (EV_TIMER3 + 1)
|
|
|
|
static char *strL1Event[] =
|
|
{
|
|
"EV_PH_ACTIVATE",
|
|
"EV_PH_DEACTIVATE",
|
|
"EV_RESET_IND",
|
|
"EV_DEACT_CNF",
|
|
"EV_DEACT_IND",
|
|
"EV_POWER_UP",
|
|
"EV_ANYSIG_IND",
|
|
"EV_INFO2_IND",
|
|
"EV_INFO4_IND",
|
|
"EV_TIMER_DEACT",
|
|
"EV_TIMER_ACT",
|
|
"EV_TIMER3",
|
|
};
|
|
|
|
static void
|
|
l1m_debug(struct FsmInst *fi, char *fmt, ...)
|
|
{
|
|
struct layer1 *l1 = fi->userdata;
|
|
va_list va;
|
|
|
|
va_start(va, fmt);
|
|
printk(KERN_DEBUG "%s: ", dev_name(&l1->dch->dev.dev));
|
|
vprintk(fmt, va);
|
|
printk("\n");
|
|
va_end(va);
|
|
}
|
|
|
|
static void
|
|
l1_reset(struct FsmInst *fi, int event, void *arg)
|
|
{
|
|
mISDN_FsmChangeState(fi, ST_L1_F3);
|
|
}
|
|
|
|
static void
|
|
l1_deact_cnf(struct FsmInst *fi, int event, void *arg)
|
|
{
|
|
struct layer1 *l1 = fi->userdata;
|
|
|
|
mISDN_FsmChangeState(fi, ST_L1_F3);
|
|
if (test_bit(FLG_L1_ACTIVATING, &l1->Flags))
|
|
l1->dcb(l1->dch, HW_POWERUP_REQ);
|
|
}
|
|
|
|
static void
|
|
l1_deact_req_s(struct FsmInst *fi, int event, void *arg)
|
|
{
|
|
struct layer1 *l1 = fi->userdata;
|
|
|
|
mISDN_FsmChangeState(fi, ST_L1_F3);
|
|
mISDN_FsmRestartTimer(&l1->timer, 550, EV_TIMER_DEACT, NULL, 2);
|
|
test_and_set_bit(FLG_L1_DEACTTIMER, &l1->Flags);
|
|
}
|
|
|
|
static void
|
|
l1_power_up_s(struct FsmInst *fi, int event, void *arg)
|
|
{
|
|
struct layer1 *l1 = fi->userdata;
|
|
|
|
if (test_bit(FLG_L1_ACTIVATING, &l1->Flags)) {
|
|
mISDN_FsmChangeState(fi, ST_L1_F4);
|
|
l1->dcb(l1->dch, INFO3_P8);
|
|
} else
|
|
mISDN_FsmChangeState(fi, ST_L1_F3);
|
|
}
|
|
|
|
static void
|
|
l1_go_F5(struct FsmInst *fi, int event, void *arg)
|
|
{
|
|
mISDN_FsmChangeState(fi, ST_L1_F5);
|
|
}
|
|
|
|
static void
|
|
l1_go_F8(struct FsmInst *fi, int event, void *arg)
|
|
{
|
|
mISDN_FsmChangeState(fi, ST_L1_F8);
|
|
}
|
|
|
|
static void
|
|
l1_info2_ind(struct FsmInst *fi, int event, void *arg)
|
|
{
|
|
struct layer1 *l1 = fi->userdata;
|
|
|
|
mISDN_FsmChangeState(fi, ST_L1_F6);
|
|
l1->dcb(l1->dch, INFO3_P8);
|
|
}
|
|
|
|
static void
|
|
l1_info4_ind(struct FsmInst *fi, int event, void *arg)
|
|
{
|
|
struct layer1 *l1 = fi->userdata;
|
|
|
|
mISDN_FsmChangeState(fi, ST_L1_F7);
|
|
l1->dcb(l1->dch, INFO3_P8);
|
|
if (test_and_clear_bit(FLG_L1_DEACTTIMER, &l1->Flags))
|
|
mISDN_FsmDelTimer(&l1->timer, 4);
|
|
if (!test_bit(FLG_L1_ACTIVATED, &l1->Flags)) {
|
|
if (test_and_clear_bit(FLG_L1_T3RUN, &l1->Flags))
|
|
mISDN_FsmDelTimer(&l1->timer, 3);
|
|
mISDN_FsmRestartTimer(&l1->timer, 110, EV_TIMER_ACT, NULL, 2);
|
|
test_and_set_bit(FLG_L1_ACTTIMER, &l1->Flags);
|
|
}
|
|
}
|
|
|
|
static void
|
|
l1_timer3(struct FsmInst *fi, int event, void *arg)
|
|
{
|
|
struct layer1 *l1 = fi->userdata;
|
|
|
|
test_and_clear_bit(FLG_L1_T3RUN, &l1->Flags);
|
|
if (test_and_clear_bit(FLG_L1_ACTIVATING, &l1->Flags)) {
|
|
if (test_and_clear_bit(FLG_L1_DBLOCKED, &l1->Flags))
|
|
l1->dcb(l1->dch, HW_D_NOBLOCKED);
|
|
l1->dcb(l1->dch, PH_DEACTIVATE_IND);
|
|
}
|
|
if (l1->l1m.state != ST_L1_F6) {
|
|
mISDN_FsmChangeState(fi, ST_L1_F3);
|
|
l1->dcb(l1->dch, HW_POWERUP_REQ);
|
|
}
|
|
}
|
|
|
|
static void
|
|
l1_timer_act(struct FsmInst *fi, int event, void *arg)
|
|
{
|
|
struct layer1 *l1 = fi->userdata;
|
|
|
|
test_and_clear_bit(FLG_L1_ACTTIMER, &l1->Flags);
|
|
test_and_set_bit(FLG_L1_ACTIVATED, &l1->Flags);
|
|
l1->dcb(l1->dch, PH_ACTIVATE_IND);
|
|
}
|
|
|
|
static void
|
|
l1_timer_deact(struct FsmInst *fi, int event, void *arg)
|
|
{
|
|
struct layer1 *l1 = fi->userdata;
|
|
|
|
test_and_clear_bit(FLG_L1_DEACTTIMER, &l1->Flags);
|
|
test_and_clear_bit(FLG_L1_ACTIVATED, &l1->Flags);
|
|
if (test_and_clear_bit(FLG_L1_DBLOCKED, &l1->Flags))
|
|
l1->dcb(l1->dch, HW_D_NOBLOCKED);
|
|
l1->dcb(l1->dch, PH_DEACTIVATE_IND);
|
|
l1->dcb(l1->dch, HW_DEACT_REQ);
|
|
}
|
|
|
|
static void
|
|
l1_activate_s(struct FsmInst *fi, int event, void *arg)
|
|
{
|
|
struct layer1 *l1 = fi->userdata;
|
|
|
|
mISDN_FsmRestartTimer(&l1->timer, TIMER3_VALUE, EV_TIMER3, NULL, 2);
|
|
test_and_set_bit(FLG_L1_T3RUN, &l1->Flags);
|
|
l1->dcb(l1->dch, HW_RESET_REQ);
|
|
}
|
|
|
|
static void
|
|
l1_activate_no(struct FsmInst *fi, int event, void *arg)
|
|
{
|
|
struct layer1 *l1 = fi->userdata;
|
|
|
|
if ((!test_bit(FLG_L1_DEACTTIMER, &l1->Flags)) &&
|
|
(!test_bit(FLG_L1_T3RUN, &l1->Flags))) {
|
|
test_and_clear_bit(FLG_L1_ACTIVATING, &l1->Flags);
|
|
if (test_and_clear_bit(FLG_L1_DBLOCKED, &l1->Flags))
|
|
l1->dcb(l1->dch, HW_D_NOBLOCKED);
|
|
l1->dcb(l1->dch, PH_DEACTIVATE_IND);
|
|
}
|
|
}
|
|
|
|
static struct FsmNode L1SFnList[] =
|
|
{
|
|
{ST_L1_F3, EV_PH_ACTIVATE, l1_activate_s},
|
|
{ST_L1_F6, EV_PH_ACTIVATE, l1_activate_no},
|
|
{ST_L1_F8, EV_PH_ACTIVATE, l1_activate_no},
|
|
{ST_L1_F3, EV_RESET_IND, l1_reset},
|
|
{ST_L1_F4, EV_RESET_IND, l1_reset},
|
|
{ST_L1_F5, EV_RESET_IND, l1_reset},
|
|
{ST_L1_F6, EV_RESET_IND, l1_reset},
|
|
{ST_L1_F7, EV_RESET_IND, l1_reset},
|
|
{ST_L1_F8, EV_RESET_IND, l1_reset},
|
|
{ST_L1_F3, EV_DEACT_CNF, l1_deact_cnf},
|
|
{ST_L1_F4, EV_DEACT_CNF, l1_deact_cnf},
|
|
{ST_L1_F5, EV_DEACT_CNF, l1_deact_cnf},
|
|
{ST_L1_F6, EV_DEACT_CNF, l1_deact_cnf},
|
|
{ST_L1_F7, EV_DEACT_CNF, l1_deact_cnf},
|
|
{ST_L1_F8, EV_DEACT_CNF, l1_deact_cnf},
|
|
{ST_L1_F6, EV_DEACT_IND, l1_deact_req_s},
|
|
{ST_L1_F7, EV_DEACT_IND, l1_deact_req_s},
|
|
{ST_L1_F8, EV_DEACT_IND, l1_deact_req_s},
|
|
{ST_L1_F3, EV_POWER_UP, l1_power_up_s},
|
|
{ST_L1_F4, EV_ANYSIG_IND, l1_go_F5},
|
|
{ST_L1_F6, EV_ANYSIG_IND, l1_go_F8},
|
|
{ST_L1_F7, EV_ANYSIG_IND, l1_go_F8},
|
|
{ST_L1_F3, EV_INFO2_IND, l1_info2_ind},
|
|
{ST_L1_F4, EV_INFO2_IND, l1_info2_ind},
|
|
{ST_L1_F5, EV_INFO2_IND, l1_info2_ind},
|
|
{ST_L1_F7, EV_INFO2_IND, l1_info2_ind},
|
|
{ST_L1_F8, EV_INFO2_IND, l1_info2_ind},
|
|
{ST_L1_F3, EV_INFO4_IND, l1_info4_ind},
|
|
{ST_L1_F4, EV_INFO4_IND, l1_info4_ind},
|
|
{ST_L1_F5, EV_INFO4_IND, l1_info4_ind},
|
|
{ST_L1_F6, EV_INFO4_IND, l1_info4_ind},
|
|
{ST_L1_F8, EV_INFO4_IND, l1_info4_ind},
|
|
{ST_L1_F3, EV_TIMER3, l1_timer3},
|
|
{ST_L1_F4, EV_TIMER3, l1_timer3},
|
|
{ST_L1_F5, EV_TIMER3, l1_timer3},
|
|
{ST_L1_F6, EV_TIMER3, l1_timer3},
|
|
{ST_L1_F8, EV_TIMER3, l1_timer3},
|
|
{ST_L1_F7, EV_TIMER_ACT, l1_timer_act},
|
|
{ST_L1_F3, EV_TIMER_DEACT, l1_timer_deact},
|
|
{ST_L1_F4, EV_TIMER_DEACT, l1_timer_deact},
|
|
{ST_L1_F5, EV_TIMER_DEACT, l1_timer_deact},
|
|
{ST_L1_F6, EV_TIMER_DEACT, l1_timer_deact},
|
|
{ST_L1_F7, EV_TIMER_DEACT, l1_timer_deact},
|
|
{ST_L1_F8, EV_TIMER_DEACT, l1_timer_deact},
|
|
};
|
|
|
|
static void
|
|
release_l1(struct layer1 *l1) {
|
|
mISDN_FsmDelTimer(&l1->timer, 0);
|
|
if (l1->dch)
|
|
l1->dch->l1 = NULL;
|
|
module_put(THIS_MODULE);
|
|
kfree(l1);
|
|
}
|
|
|
|
int
|
|
l1_event(struct layer1 *l1, u_int event)
|
|
{
|
|
int err = 0;
|
|
|
|
if (!l1)
|
|
return -EINVAL;
|
|
switch (event) {
|
|
case HW_RESET_IND:
|
|
mISDN_FsmEvent(&l1->l1m, EV_RESET_IND, NULL);
|
|
break;
|
|
case HW_DEACT_IND:
|
|
mISDN_FsmEvent(&l1->l1m, EV_DEACT_IND, NULL);
|
|
break;
|
|
case HW_POWERUP_IND:
|
|
mISDN_FsmEvent(&l1->l1m, EV_POWER_UP, NULL);
|
|
break;
|
|
case HW_DEACT_CNF:
|
|
mISDN_FsmEvent(&l1->l1m, EV_DEACT_CNF, NULL);
|
|
break;
|
|
case ANYSIGNAL:
|
|
mISDN_FsmEvent(&l1->l1m, EV_ANYSIG_IND, NULL);
|
|
break;
|
|
case LOSTFRAMING:
|
|
mISDN_FsmEvent(&l1->l1m, EV_ANYSIG_IND, NULL);
|
|
break;
|
|
case INFO2:
|
|
mISDN_FsmEvent(&l1->l1m, EV_INFO2_IND, NULL);
|
|
break;
|
|
case INFO4_P8:
|
|
mISDN_FsmEvent(&l1->l1m, EV_INFO4_IND, NULL);
|
|
break;
|
|
case INFO4_P10:
|
|
mISDN_FsmEvent(&l1->l1m, EV_INFO4_IND, NULL);
|
|
break;
|
|
case PH_ACTIVATE_REQ:
|
|
if (test_bit(FLG_L1_ACTIVATED, &l1->Flags))
|
|
l1->dcb(l1->dch, PH_ACTIVATE_IND);
|
|
else {
|
|
test_and_set_bit(FLG_L1_ACTIVATING, &l1->Flags);
|
|
mISDN_FsmEvent(&l1->l1m, EV_PH_ACTIVATE, NULL);
|
|
}
|
|
break;
|
|
case CLOSE_CHANNEL:
|
|
release_l1(l1);
|
|
break;
|
|
default:
|
|
if (*debug & DEBUG_L1)
|
|
printk(KERN_DEBUG "%s %x unhandled\n",
|
|
__func__, event);
|
|
err = -EINVAL;
|
|
}
|
|
return err;
|
|
}
|
|
EXPORT_SYMBOL(l1_event);
|
|
|
|
int
|
|
create_l1(struct dchannel *dch, dchannel_l1callback *dcb) {
|
|
struct layer1 *nl1;
|
|
|
|
nl1 = kzalloc(sizeof(struct layer1), GFP_ATOMIC);
|
|
if (!nl1) {
|
|
printk(KERN_ERR "kmalloc struct layer1 failed\n");
|
|
return -ENOMEM;
|
|
}
|
|
nl1->l1m.fsm = &l1fsm_s;
|
|
nl1->l1m.state = ST_L1_F3;
|
|
nl1->Flags = 0;
|
|
nl1->l1m.debug = *debug & DEBUG_L1_FSM;
|
|
nl1->l1m.userdata = nl1;
|
|
nl1->l1m.userint = 0;
|
|
nl1->l1m.printdebug = l1m_debug;
|
|
nl1->dch = dch;
|
|
nl1->dcb = dcb;
|
|
mISDN_FsmInitTimer(&nl1->l1m, &nl1->timer);
|
|
__module_get(THIS_MODULE);
|
|
dch->l1 = nl1;
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(create_l1);
|
|
|
|
int
|
|
l1_init(u_int *deb)
|
|
{
|
|
debug = deb;
|
|
l1fsm_s.state_count = L1S_STATE_COUNT;
|
|
l1fsm_s.event_count = L1_EVENT_COUNT;
|
|
l1fsm_s.strEvent = strL1Event;
|
|
l1fsm_s.strState = strL1SState;
|
|
mISDN_FsmNew(&l1fsm_s, L1SFnList, ARRAY_SIZE(L1SFnList));
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
l1_cleanup(void)
|
|
{
|
|
mISDN_FsmFree(&l1fsm_s);
|
|
}
|