/**
* pdc_iodc_putc - Console character print using IODC.
* @c: the character to output.
*
* Note that only these special chars are architected for console IODC io:
* BEL, BS, CR, and LF. Others are passed through.
* Since the HP console requires CR+LF to perform a 'newline', we translate
* "\n" to "\r\n".
*/
void pdc_iodc_putc(unsigned char c)
{
/* XXX Should we spinlock posx usage */
static int posx; /* for simple TAB-Simulation... */
static int __attribute__((aligned(8))) iodc_retbuf[32];
static char __attribute__((aligned(64))) iodc_dbuf[4096];
unsigned int n;
unsigned int flags;
switch (c) {
case '\n':
iodc_dbuf[0] = '\r';
iodc_dbuf[1] = '\n';
n = 2;
posx = 0;
break;
case '\t':
pdc_iodc_putc(' ');
while (posx & 7) /* expand TAB */
pdc_iodc_putc(' ');
return; /* return since IODC can't handle this */
case '\b':
posx-=2; /* BS */
default:
iodc_dbuf[0] = c;
n = 1;
posx++;
break;
}
spin_lock_irqsave(&pdc_lock, flags);
real32_call(PAGE0->mem_cons.iodc_io,
(unsigned long)PAGE0->mem_cons.hpa, ENTRY_IO_COUT,
PAGE0->mem_cons.spa, __pa(PAGE0->mem_cons.dp.layers),
__pa(iodc_retbuf), 0, __pa(iodc_dbuf), n, 0);
spin_unlock_irqrestore(&pdc_lock, flags);
}
static void pdc_console_write(struct console *co, const char *s, unsigned count)
{
while(count--)
pdc_iodc_putc(*s++);
}
