diff options
Diffstat (limited to 'arch/mips64/sgi-ip22/ip22-setup.c')
| -rw-r--r-- | arch/mips64/sgi-ip22/ip22-setup.c | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/arch/mips64/sgi-ip22/ip22-setup.c b/arch/mips64/sgi-ip22/ip22-setup.c new file mode 100644 index 000000000..d6051f166 --- /dev/null +++ b/arch/mips64/sgi-ip22/ip22-setup.c @@ -0,0 +1,173 @@ +/* $Id$ + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * SGI IP22 specific setup. + * + * Copyright (C) 1996 David S. Miller (dm@engr.sgi.com) + * Copyright (C) 1997, 1998, 1999 Ralf Baechle (ralf@gnu.org) + * Copyright (C) 1999 Silcon Graphics, Inc. + */ +#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/sgi.h> +#include <asm/sgi/sgimc.h> +#include <asm/sgi/sgihpc.h> +#include <asm/sgi/sgint23.h> + +extern struct rtc_ops indy_rtc_ops; +void indy_reboot_setup(void); +void sgi_volume_set(unsigned char); + +#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 +}; + +static void __init sgi_irq_setup(void) +{ + sgint_init(); +} + +void __init 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_SGI_PROM_CONSOLE + console_setup("ttyS0"); +#endif + + sgi_volume_set(simple_strtoul(prom_getenv("volume"), NULL, 10)); + +#ifdef CONFIG_VT +#ifdef CONFIG_SGI_NEWPORT_CONSOLE + conswitchp = &newport_con; +#else + conswitchp = &dummy_con; +#endif +#endif + rtc_ops = &indy_rtc_ops; + kbd_ops = &sgi_kbd_ops; +#ifdef CONFIG_PSMOUSE + aux_device_present = 0xaa; +#endif +#ifdef CONFIG_VIDEO_VINO + init_vino(); +#endif +} |