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/*
* Utility subroutines.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <syslog.h>
#include <varargs.h>
#include "cardd.h"
void
log_1s(char *msg, char *arg)
{
if (do_log)
syslog(LOG_ERR, msg, arg);
else
{
fprintf(stderr, "cardd: ");
fprintf(stderr, msg, arg);
fprintf(stderr, "\n");
}
}
void
logerr(char *msg)
{
if (do_log)
syslog(LOG_ERR, "%s: %m", msg);
else
perror(msg);
}
/*
* Deliver last will and testament, and die.
*/
void
die(char *msg)
{
if (do_log)
syslog(LOG_CRIT, "fatal error: %s", msg);
else
fprintf(stderr, "cardd fatal error: %s\n", msg);
closelog();
exit(1);
}
void *
xmalloc(int sz)
{
void *p;
p = malloc(sz+8);
if (p)
bzero(p, sz);
else
die("malloc failed");
return(p);
}
char *
newstr(char *p)
{
char *s;
s = strdup(p);
if (s == 0)
die("strdup failed");
return(s);
}
/*
* Find contiguous bit string (all set) of at
* least count number.
*/
int
bit_fns(bitstr_t *nm, int nbits, int count)
{
int i;
int found = 0;
for (i = 0; i < nbits; i++)
if (bit_test(nm, i))
{
if (++found == count)
return(i - count + 1);
}
else
found = 0;
return(-1);
}
/*
* Allocate a block of memory and return the address.
*/
unsigned long
alloc_memory(int size)
{
int i;
i = bit_fns(mem_avail, MEMBLKS, size/MEMUNIT);
if (i < 0)
return(0);
bit_nclear(mem_avail, i, size/MEMUNIT);
return(BIT2MEM(i));
}
/*
* reset_slot - Power has been applied to the card.
* Now reset the card.
*/
void
reset_slot(struct slot *sp)
{
char c;
off_t offs;
struct mem_desc mem;
struct io_desc io;
int rw_flags;
rw_flags = MDF_ATTR;
ioctl(sp->fd, PIOCRWFLAG, &rw_flags);
#ifdef DEBUG
printf("Resetting card, writing 0x80 to offs 0x%x\n",
sp->cis->reg_addr);
#endif
offs = sp->cis->reg_addr;
lseek(sp->fd, offs, SEEK_SET);
c = 0x80;
write(sp->fd, &c, sizeof(c));
usleep(10*1000);
c = 0;
lseek(sp->fd, offs, SEEK_SET);
write(sp->fd, &c, sizeof(c));
/*
* Reset all the memory and I/O windows.
*/
bzero((caddr_t)&mem, sizeof(mem));
bzero((caddr_t)&io, sizeof(io));
for (mem.window = 0; mem.window < NUM_MEM_WINDOWS; mem.window++)
ioctl(sp->fd, PIOCSMEM, &mem);
for (io.window = 0; io.window < NUM_IO_WINDOWS; io.window++)
ioctl(sp->fd, PIOCSIO, &io);
}
/*
* execute - Execute the command strings.
* For the current slot (if any) perform macro
* substitutions.
*/
void
execute(struct cmd *cmdp)
{
char cmd[1024];
char *p, *cp, *lp;
for (;cmdp; cmdp = cmdp->next)
{
cp = cmd;
lp = cmdp->line;
if (*lp == 0)
continue;
while ((p = strchr(lp, '$')) != 0)
{
/*
* copy over preceding string.
*/
while (lp != p)
*cp++ = *lp++;
/*
* stringify ethernet address and place here.
*/
if (strncmp(p, "$ether", 6)==0)
{
sprintf(cp, "%x:%x:%x:%x:%x:%x",
current_slot->eaddr[0],
current_slot->eaddr[1],
current_slot->eaddr[2],
current_slot->eaddr[3],
current_slot->eaddr[4],
current_slot->eaddr[5]);
while (*++cp)
;
lp += 6;
}
/*
* replace device name
*/
else if (strncmp(p, "$device", 7)==0)
{
sprintf(cp, "%s%d",
current_slot->config->driver->kernel,
current_slot->config->driver->unit);
while (*cp)
cp++;
lp += 7;
}
/*
* Copy the `$' and rescan.
*/
else
*cp++ = *lp++;
}
/*
* No more replacements. Copy rest of string.
*/
while ((*cp++ = *lp++) != 0)
;
#ifdef DEBUG
fprintf(stderr, "Executing [%s]\n", cmd);
#endif /* DEBUG */
system(cmd);
}
}
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