1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
|
/* $Id: timer.c,v 1.3.6.1 2001/09/23 22:24:59 kai Exp $
*
* Copyright (C) 1996 SpellCaster Telecommunications Inc.
*
* This software may be used and distributed according to the terms
* of the GNU General Public License, incorporated herein by reference.
*
* For more information, please contact gpl-info@spellcast.com or write:
*
* SpellCaster Telecommunications Inc.
* 5621 Finch Avenue East, Unit #3
* Scarborough, Ontario Canada
* M1B 2T9
* +1 (416) 297-8565
* +1 (416) 297-6433 Facsimile
*/
#include "includes.h"
#include "hardware.h"
#include "message.h"
#include "card.h"
/*
* Write the proper values into the I/O ports following a reset
*/
static void setup_ports(int card)
{
outb((sc_adapter[card]->rambase >> 12), sc_adapter[card]->ioport[EXP_BASE]);
/* And the IRQ */
outb((sc_adapter[card]->interrupt | 0x80),
sc_adapter[card]->ioport[IRQ_SELECT]);
}
/*
* Timed function to check the status of a previous reset
* Must be very fast as this function runs in the context of
* an interrupt handler.
*
* Setup the ioports for the board that were cleared by the reset.
* Then, check to see if the signate has been set. Next, set the
* signature to a known value and issue a startproc if needed.
*/
void sc_check_reset(unsigned long data)
{
unsigned long flags;
unsigned long sig;
int card = (unsigned int) data;
pr_debug("%s: check_timer timer called\n",
sc_adapter[card]->devicename);
/* Setup the io ports */
setup_ports(card);
spin_lock_irqsave(&sc_adapter[card]->lock, flags);
outb(sc_adapter[card]->ioport[sc_adapter[card]->shmem_pgport],
(sc_adapter[card]->shmem_magic>>14) | 0x80);
sig = (unsigned long) *((unsigned long *)(sc_adapter[card]->rambase + SIG_OFFSET));
/* check the signature */
if(sig == SIGNATURE) {
flushreadfifo(card);
spin_unlock_irqrestore(&sc_adapter[card]->lock, flags);
/* See if we need to do a startproc */
if (sc_adapter[card]->StartOnReset)
startproc(card);
} else {
pr_debug("%s: No signature yet, waiting another %lu jiffies.\n",
sc_adapter[card]->devicename, CHECKRESET_TIME);
mod_timer(&sc_adapter[card]->reset_timer, jiffies+CHECKRESET_TIME);
spin_unlock_irqrestore(&sc_adapter[card]->lock, flags);
}
}
/*
* Timed function to check the status of a previous reset
* Must be very fast as this function runs in the context of
* an interrupt handler.
*
* Send check sc_adapter->phystat to see if the channels are up
* If they are, tell ISDN4Linux that the board is up. If not,
* tell IADN4Linux that it is up. Always reset the timer to
* fire again (endless loop).
*/
void check_phystat(unsigned long data)
{
unsigned long flags;
int card = (unsigned int) data;
pr_debug("%s: Checking status...\n", sc_adapter[card]->devicename);
/*
* check the results of the last PhyStat and change only if
* has changed drastically
*/
if (sc_adapter[card]->nphystat && !sc_adapter[card]->phystat) { /* All is well */
pr_debug("PhyStat transition to RUN\n");
pr_info("%s: Switch contacted, transmitter enabled\n",
sc_adapter[card]->devicename);
indicate_status(card, ISDN_STAT_RUN, 0, NULL);
}
else if (!sc_adapter[card]->nphystat && sc_adapter[card]->phystat) { /* All is not well */
pr_debug("PhyStat transition to STOP\n");
pr_info("%s: Switch connection lost, transmitter disabled\n",
sc_adapter[card]->devicename);
indicate_status(card, ISDN_STAT_STOP, 0, NULL);
}
sc_adapter[card]->phystat = sc_adapter[card]->nphystat;
/* Reinitialize the timer */
spin_lock_irqsave(&sc_adapter[card]->lock, flags);
mod_timer(&sc_adapter[card]->stat_timer, jiffies+CHECKSTAT_TIME);
spin_unlock_irqrestore(&sc_adapter[card]->lock, flags);
/* Send a new cePhyStatus message */
sendmessage(card, CEPID,ceReqTypePhy,ceReqClass2,
ceReqPhyStatus,0,0,NULL);
}
|
