patch-2.3.48 linux/arch/mips64/sgi-ip22/ip22-setup.c

• Lines: 189
• Date: Thu Feb 24 22:53:35 2000
• Orig file: v2.3.47/linux/arch/mips64/sgi-ip22/ip22-setup.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.3.47/linux/arch/mips64/sgi-ip22/ip22-setup.c linux/arch/mips64/sgi-ip22/ip22-setup.c
@@ -0,0 +1,188 @@
+/* $Id: ip22-setup.c,v 1.5 2000/01/27 01:05:24 ralf Exp $
+ *
+ * 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 <linux/tty.h>
+
+#include <asm/addrspace.h>
+#include <asm/bcache.h>
+#include <asm/keyboard.h>
+#include <asm/irq.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;
+extern void ip22_reboot_setup(void);
+extern void ip22_volume_set(unsigned char);
+
+#define sgi_kh ((struct hpc_keyb *) (KSEG1 + 0x1fbd9800 + 64))
+
+#define KBD_STAT_IBF		0x02	/* Keyboard input buffer full */
+
+static void ip22_request_region(void)
+{
+	/* No I/O ports are being used on the Indy.  */
+}
+
+static int ip22_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.  */
+	ip22_reboot_setup();
+
+	return request_irq(SGI_KEYBOARD_IRQ, handler, 0, "keyboard", NULL);
+}
+
+static int ip22_aux_request_irq(void (*handler)(int, void *, struct pt_regs *))
+{
+	/* Nothing to do, interrupt is shared with the keyboard hw  */
+	return 0;
+}
+
+static void ip22_aux_free_irq(void)
+{
+	/* Nothing to do, interrupt is shared with the keyboard hw  */
+}
+
+static unsigned char ip22_read_input(void)
+{
+	return sgi_kh->data;
+}
+
+static void ip22_write_output(unsigned char val)
+{
+	int status;
+
+	do {
+		status = sgi_kh->command;
+	} while (status & KBD_STAT_IBF);
+	sgi_kh->data = val;
+}
+
+static void ip22_write_command(unsigned char val)
+{
+	int status;
+
+	do {
+		status = sgi_kh->command;
+	} while (status & KBD_STAT_IBF);
+	sgi_kh->command = val;
+}
+
+static unsigned char ip22_read_status(void)
+{
+	return sgi_kh->command;
+}
+
+struct kbd_ops sgi_kbd_ops = {
+	ip22_request_region,
+	ip22_request_irq,
+
+	ip22_aux_request_irq,
+	ip22_aux_free_irq,
+
+	ip22_read_input,
+	ip22_write_output,
+	ip22_write_command,
+	ip22_read_status
+};
+
+int __init page_is_ram(unsigned long pagenr)
+{
+	if (pagenr < MAP_NR(PAGE_OFFSET + 0x2000UL))
+		return 1;
+	if (pagenr > MAP_NR(PAGE_OFFSET + 0x08002000))
+		return 1;
+	return 0;
+}
+
+void __init ip22_setup(void)
+{
+#ifdef CONFIG_SERIAL_CONSOLE
+	char *ctype;
+#endif
+
+	/* 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 = ArcArcGetEnvironmentVariable("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
+
+	ip22_volume_set(simple_strtoul(ArcGetEnvironmentVariable("volume"),
+	                              NULL, 10));
+
+#ifdef CONFIG_VT
+#ifdef CONFIG_SGI_NEWPORT_CONSOLE
+	conswitchp = &newport_con;
+
+	screen_info = (struct screen_info) {
+		0, 0,		/* orig-x, orig-y */
+		0,		/* unused */
+		0,		/* orig_video_page */
+		0,		/* orig_video_mode */
+		160,		/* orig_video_cols */
+		0, 0, 0,	/* unused, ega_bx, unused */
+		64,		/* orig_video_lines */
+		0,		/* orig_video_isVGA */
+		16		/* orig_video_points */
+	};
+#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
+}