patch-2.4.19 linux-2.4.19/arch/mips/sgi/kernel/setup.c

• Lines: 309
• Date: Wed Dec 31 16:00:00 1969
• Orig file: linux-2.4.18/arch/mips/sgi/kernel/setup.c
• Orig date: Sun Sep 9 10:43:02 2001

diff -urN linux-2.4.18/arch/mips/sgi/kernel/setup.c linux-2.4.19/arch/mips/sgi/kernel/setup.c
@@ -1,308 +0,0 @@
-/*
- * 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/sgimc.h>
-#include <asm/sgi/sgihpc.h>
-#include <asm/sgi/sgint23.h>
-#include <asm/time.h>
-#include <asm/gdb-stub.h>
-
-#ifdef CONFIG_REMOTE_DEBUG
-extern void rs_kgdb_hook(int);
-extern void breakpoint(void);
-static int remote_debug = 0;
-#endif
-
-#if defined(CONFIG_SERIAL_CONSOLE) || defined(CONFIG_ARC_CONSOLE)
-extern void console_setup(char *);
-#endif
-
-extern unsigned long r4k_interval; /* Cycle counter ticks per 1/HZ seconds */
-
-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 unsigned long dosample(volatile unsigned char *tcwp,
-                              volatile unsigned char *tc2p)
-{
-        unsigned long ct0, ct1;
-        unsigned char msb, lsb;
-
-        /* Start the counter. */
-        *tcwp = (SGINT_TCWORD_CNT2 | SGINT_TCWORD_CALL | SGINT_TCWORD_MRGEN);
-        *tc2p = (SGINT_TCSAMP_COUNTER & 0xff);
-        *tc2p = (SGINT_TCSAMP_COUNTER >> 8);
-
-        /* Get initial counter invariant */
-        ct0 = read_32bit_cp0_register(CP0_COUNT);
-
-        /* Latch and spin until top byte of counter2 is zero */
-        do {
-                *tcwp = (SGINT_TCWORD_CNT2 | SGINT_TCWORD_CLAT);
-                lsb = *tc2p;
-                msb = *tc2p;
-                ct1 = read_32bit_cp0_register(CP0_COUNT);
-        } while(msb);
-
-	/* Stop the counter. */
-	*tcwp = (SGINT_TCWORD_CNT2 | SGINT_TCWORD_CALL | SGINT_TCWORD_MSWST);
-
-	/*
-	 * Return the difference, this is how far the r4k counter increments
-	 * for every 1/HZ seconds. We round off the nearest 1 MHz of master
-	 * clock (= 1000000 / 100 / 2 = 5000 count).
-	 */
-
-	return ((ct1 - ct0) / 5000) * 5000;
-}
-
-#define ALLINTS (IE_IRQ0 | IE_IRQ1 | IE_IRQ2 | IE_IRQ3 | IE_IRQ4 | IE_IRQ5)
-
-void sgi_time_init (struct irqaction *irq) {
-	/* Here we need to calibrate the cycle counter to at least be close.
-	 * We don't need to actually register the irq handler because that's
-	 * all done in indyIRQ.S.
-	 */
-        struct sgi_ioc_timers *p;
-        volatile unsigned char *tcwp, *tc2p;
-	unsigned long r4k_ticks[3];
-	unsigned long r4k_next;
-
-        /* Figure out the r4k offset, the algorithm is very simple
-         * and works in _all_ cases as long as the 8254 counter
-         * register itself works ok (as an interrupt driving timer
-         * it does not because of bug, this is why we are using
-         * the onchip r4k counter/compare register to serve this
-         * purpose, but for r4k_offset calculation it will work
-         * ok for us).  There are other very complicated ways
-         * of performing this calculation but this one works just
-         * fine so I am not going to futz around. ;-)
-         */
-        p = ioc_timers;
-        tcwp = &p->tcword;
-        tc2p = &p->tcnt2;
-
-        printk("Calibrating system timer... ");
-        dosample(tcwp, tc2p);                   /* Prime cache. */
-        dosample(tcwp, tc2p);                   /* Prime cache. */
-	/* Zero is NOT an option. */
-	do {
-		r4k_ticks[0] = dosample (tcwp, tc2p);
-	} while (!r4k_ticks[0]);
-	do {
-		r4k_ticks[1] = dosample (tcwp, tc2p);
-	} while (!r4k_ticks[1]);
-
-	if (r4k_ticks[0] != r4k_ticks[1]) {
-		printk ("warning: timer counts differ, retrying...");
-		r4k_ticks[2] = dosample (tcwp, tc2p);
-		if (r4k_ticks[2] == r4k_ticks[0] 
-		    || r4k_ticks[2] == r4k_ticks[1])
-			r4k_interval = r4k_ticks[2];
-		else {
-			printk ("disagreement, using average...");
-			r4k_interval = (r4k_ticks[0] + r4k_ticks[1] 
-					+ r4k_ticks[2]) / 3;
-		}
-	} else
-		r4k_interval = r4k_ticks[0];
-
-        printk("%d [%d.%02d MHz CPU]\n", (int) r4k_interval, 
-		(int) (r4k_interval / 5000), (int) (r4k_interval % 5000) / 50);
-
-	/* Set ourselves up for future interrupts */
-        r4k_next = (read_32bit_cp0_register(CP0_COUNT) + r4k_interval);
-        write_32bit_cp0_register(CP0_COMPARE, r4k_next);
-        change_cp0_status(ST0_IM, ALLINTS);
-	sti ();
-}
-
-void __init sgi_setup(void)
-{
-#ifdef CONFIG_SERIAL_CONSOLE
-	char *ctype;
-#endif
-#ifdef CONFIG_REMOTE_DEBUG
-	char *kgdb_ttyd;
-#endif
-
-	board_time_init = sgi_time_init;
-
-	/* 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 = ArcGetEnvironmentVariable("console");
-	if(*ctype == 'd') {
-		if(*(ctype+1)=='2')
-			console_setup ("ttyS1");
-		else
-			console_setup ("ttyS0");
-	}
-#endif
-
-#ifdef CONFIG_REMOTE_DEBUG
-	kgdb_ttyd = prom_getcmdline();
-	if ((kgdb_ttyd = strstr(kgdb_ttyd, "kgdb=ttyd")) != NULL) {
-		int line;
-		kgdb_ttyd += strlen("kgdb=ttyd");
-		if (*kgdb_ttyd != '1' && *kgdb_ttyd != '2')
-			printk("KGDB: Uknown serial line /dev/ttyd%c, "
-			       "falling back to /dev/ttyd1\n", *kgdb_ttyd);
-		line = *kgdb_ttyd == '2' ? 0 : 1;
-		printk("KGDB: Using serial line /dev/ttyd%d for session\n",
-		       line ? 1 : 2);
-		rs_kgdb_hook(line);
-
-		printk("KGDB: Using serial line /dev/ttyd%d for session, "
-			    "please connect your debugger\n", line ? 1 : 2);
-
-		remote_debug = 1;
-		/* Breakpoints and stuff are in sgi_irq_setup() */
-	}
-#endif
-
-#ifdef CONFIG_ARC_CONSOLE
-	console_setup("ttyS0");
-#endif
- 
-	sgi_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
-}