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/*
* Source file for diva log facility
*
* Copyright (C) Eicon Technology Corporation, 2000.
*
* Eicon File Revision : 1.5
*
* This software may be used and distributed according to the terms
* of the GNU General Public License, incorporated herein by reference.
*
*/
#include "sys.h"
#include "idi.h"
#include "divas.h"
#include "adapter.h"
#include "divalog.h"
#include "uxio.h"
/*Counter to monitor number of messages */
static int m_count;
#define MAX_BUFFERED_MSGS (1000)
/* Our Linked List Structure to hold message */
typedef struct klog_link{
klog_t klog;
struct klog_link *next;
}KNODE;
/* First & Last structures in list*/
KNODE *head;
KNODE *tail;
/*
* retrieve message from FIFO buffer
* returns NULL if buffer empty
* otherwise returns pointer to entry
*/
char *DivasLogFifoRead(void)
{
KNODE *old_head;
if(head==NULL)
{
/* Buffer Empty - No Messages */
return NULL;
}
m_count--;
/* Keep track of message to be read & increment to next message*/
old_head = head;
head = head->next;
/*Return ptr to Msg */
return((char *)old_head);
}
/*
* write message into FIFO buffer
*/
void DivasLogFifoWrite(char *entry, int length)
{
KNODE *new_klog;
if(head == NULL)
{
/* No Entries in Log */
tail=NULL;
m_count=0;
new_klog=UxAlloc(sizeof(KNODE));
if(new_klog==NULL)
{
return;
}
m_count++;
memset(new_klog, 0, sizeof(KNODE));
/* Set head & tail to point to the new Msg Struct */
head=tail=new_klog;
tail->next=NULL;
}
else
{
new_klog=UxAlloc(sizeof(KNODE));
if(new_klog==NULL)
{
return;
}
m_count++;
memset(new_klog, 0, sizeof(KNODE));
/* Let last Msg Struct point to new Msg Struct & inc tail */
tail->next=new_klog;
tail=new_klog;
tail->next=NULL;
}
if (length > sizeof(klog_t))
{
length = sizeof(klog_t);
}
memcpy(&tail->klog, entry, length);
return;
}
/*
* DivaslogFifoEmpty:return TRUE if FIFO buffer is empty,otherwise FALSE
*/
int DivasLogFifoEmpty(void)
{
return (m_count == 0);
}
/*
*DivasLogFifoFull:return TRUE if FIFO buffer is full,otherwise FALSE
*/
int DivasLogFifoFull(void)
{
return (m_count == MAX_BUFFERED_MSGS);
}
/*
* generate an IDI log entry
*/
void DivasLogIdi(card_t *card, ENTITY *e, int request)
{
klog_t klog;
memset(&klog, 0, sizeof(klog));
klog.time_stamp = UxTimeGet();
klog.length = sizeof(ENTITY) > sizeof(klog.buffer) ?
sizeof(klog.buffer) : sizeof(ENTITY);
klog.card = (int) (card - DivasCards);
klog.type = request ? KLOG_IDI_REQ : KLOG_IDI_CALLBACK;
klog.code = 0;
memcpy(klog.buffer, e, klog.length);
/* send to the log driver and return */
DivasLogAdd(&klog, sizeof(klog));
return;
}
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