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/* $Id: setup.c,v 1.16 1998/10/02 22:06:11 tsbogend Exp $
*
* setup.c: SGI specific setup, including init of the feature struct.
*
* Copyright (C) 1996 David S. Miller (dm@engr.sgi.com)
* Copyright (C) 1997, 1998 Ralf Baechle (ralf@gnu.org)
*/
#include <linux/config.h>
#include <linux/init.h>
#include <linux/kbd_ll.h>
#include <linux/kernel.h>
#include <linux/kdev_t.h>
#include <linux/types.h>
#include <linux/console.h>
#include <linux/sched.h>
#include <linux/mc146818rtc.h>
#include <linux/pc_keyb.h>
#include <asm/addrspace.h>
#include <asm/bcache.h>
#include <asm/keyboard.h>
#include <asm/irq.h>
#include <asm/reboot.h>
#include <asm/sgialib.h>
#include <asm/sgi.h>
#include <asm/sgimc.h>
#include <asm/sgihpc.h>
#include <asm/sgint23.h>
extern struct rtc_ops indy_rtc_ops;
void indy_reboot_setup(void);
#define sgi_kh ((struct hpc_keyb *) (KSEG1 + 0x1fbd9800 + 64))
#define KBD_STAT_IBF 0x02 /* Keyboard input buffer full */
static void sgi_request_region(void)
{
/* No I/O ports are being used on the Indy. */
}
static int sgi_request_irq(void (*handler)(int, void *, struct pt_regs *))
{
/* Dirty hack, this get's called as a callback from the keyboard
driver. We piggyback the initialization of the front panel
button handling on it even though they're technically not
related with the keyboard driver in any way. Doing it from
indy_setup wouldn't work since kmalloc isn't initialized yet. */
indy_reboot_setup();
return request_irq(SGI_KEYBOARD_IRQ, handler, 0, "keyboard", NULL);
}
static int sgi_aux_request_irq(void (*handler)(int, void *, struct pt_regs *))
{
/* Nothing to do, interrupt is shared with the keyboard hw */
return 0;
}
static void sgi_aux_free_irq(void)
{
/* Nothing to do, interrupt is shared with the keyboard hw */
}
static unsigned char sgi_read_input(void)
{
return sgi_kh->data;
}
static void sgi_write_output(unsigned char val)
{
int status;
do {
status = sgi_kh->command;
} while (status & KBD_STAT_IBF);
sgi_kh->data = val;
}
static void sgi_write_command(unsigned char val)
{
int status;
do {
status = sgi_kh->command;
} while (status & KBD_STAT_IBF);
sgi_kh->command = val;
}
static unsigned char sgi_read_status(void)
{
return sgi_kh->command;
}
struct kbd_ops sgi_kbd_ops = {
sgi_request_region,
sgi_request_irq,
sgi_aux_request_irq,
sgi_aux_free_irq,
sgi_read_input,
sgi_write_output,
sgi_write_command,
sgi_read_status
};
__initfunc(static void sgi_irq_setup(void))
{
sgint_init();
}
__initfunc(void sgi_setup(void))
{
#ifdef CONFIG_SERIAL_CONSOLE
char *ctype;
#endif
irq_setup = sgi_irq_setup;
/* Init the INDY HPC I/O controller. Need to call this before
* fucking with the memory controller because it needs to know the
* boardID and whether this is a Guiness or a FullHouse machine.
*/
sgihpc_init();
/* Init INDY memory controller. */
sgimc_init();
/* Now enable boardcaches, if any. */
indy_sc_init();
#ifdef CONFIG_SERIAL_CONSOLE
/* ARCS console environment variable is set to "g?" for
* graphics console, it is set to "d" for the first serial
* line and "d2" for the second serial line.
*/
ctype = prom_getenv("console");
if(*ctype == 'd') {
if(*(ctype+1)=='2')
console_setup ("ttyS1");
else
console_setup ("ttyS0");
}
#endif
#ifdef CONFIG_VT
conswitchp = &newport_con;
#endif
rtc_ops = &indy_rtc_ops;
kbd_ops = &sgi_kbd_ops;
#ifdef CONFIG_PSMOUSE
aux_device_present = 0xaa;
#endif
}
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