Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

5 files changed, 618 insertions, 0 deletions

diff --git a/arch/m68k/mvme16x/16xints.c b/arch/m68k/mvme16x/16xints.c
new file mode 100644
index 0000000..793ef73
--- /dev/null
+++ b/arch/m68k/mvme16x/16xints.c
@@ -0,0 +1,149 @@
+/*
+ * arch/m68k/mvme16x/16xints.c
+ *
+ * Copyright (C) 1995 Richard Hirst [richard@sleepie.demon.co.uk]
+ *
+ * based on amiints.c -- Amiga Linux interrupt handling code
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file README.legal in the main directory of this archive
+ * for more details.
+ *
+ */
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/seq_file.h>
+
+#include <asm/system.h>
+#include <asm/ptrace.h>
+#include <asm/irq.h>
+
+static irqreturn_t mvme16x_defhand (int irq, void *dev_id, struct pt_regs *fp);
+
+/*
+ * This should ideally be 4 elements only, for speed.
+ */
+
+static struct {
+	irqreturn_t	(*handler)(int, void *, struct pt_regs *);
+	unsigned long	flags;
+	void		*dev_id;
+	const char	*devname;
+	unsigned	count;
+} irq_tab[192];
+
+/*
+ * void mvme16x_init_IRQ (void)
+ *
+ * Parameters:	None
+ *
+ * Returns:	Nothing
+ *
+ * This function is called during kernel startup to initialize
+ * the mvme16x IRQ handling routines.  Should probably ensure
+ * that the base vectors for the VMEChip2 and PCCChip2 are valid.
+ */
+
+void mvme16x_init_IRQ (void)
+{
+	int i;
+
+	for (i = 0; i < 192; i++) {
+		irq_tab[i].handler = mvme16x_defhand;
+		irq_tab[i].flags = IRQ_FLG_STD;
+		irq_tab[i].dev_id = NULL;
+		irq_tab[i].devname = NULL;
+		irq_tab[i].count = 0;
+	}
+}
+
+int mvme16x_request_irq(unsigned int irq,
+		irqreturn_t (*handler)(int, void *, struct pt_regs *),
+                unsigned long flags, const char *devname, void *dev_id)
+{
+	if (irq < 64 || irq > 255) {
+		printk("%s: Incorrect IRQ %d from %s\n", __FUNCTION__, irq, devname);
+		return -ENXIO;
+	}
+
+	if (!(irq_tab[irq-64].flags & IRQ_FLG_STD)) {
+		if (irq_tab[irq-64].flags & IRQ_FLG_LOCK) {
+			printk("%s: IRQ %d from %s is not replaceable\n",
+			       __FUNCTION__, irq, irq_tab[irq-64].devname);
+			return -EBUSY;
+		}
+		if (flags & IRQ_FLG_REPLACE) {
+			printk("%s: %s can't replace IRQ %d from %s\n",
+			       __FUNCTION__, devname, irq, irq_tab[irq-64].devname);
+			return -EBUSY;
+		}
+	}
+	irq_tab[irq-64].handler = handler;
+	irq_tab[irq-64].flags   = flags;
+	irq_tab[irq-64].dev_id  = dev_id;
+	irq_tab[irq-64].devname = devname;
+	return 0;
+}
+
+void mvme16x_free_irq(unsigned int irq, void *dev_id)
+{
+	if (irq < 64 || irq > 255) {
+		printk("%s: Incorrect IRQ %d\n", __FUNCTION__, irq);
+		return;
+	}
+
+	if (irq_tab[irq-64].dev_id != dev_id)
+		printk("%s: Removing probably wrong IRQ %d from %s\n",
+		       __FUNCTION__, irq, irq_tab[irq-64].devname);
+
+	irq_tab[irq-64].handler = mvme16x_defhand;
+	irq_tab[irq-64].flags   = IRQ_FLG_STD;
+	irq_tab[irq-64].dev_id  = NULL;
+	irq_tab[irq-64].devname = NULL;
+}
+
+irqreturn_t mvme16x_process_int (unsigned long vec, struct pt_regs *fp)
+{
+	if (vec < 64 || vec > 255) {
+		printk ("mvme16x_process_int: Illegal vector %ld", vec);
+		return IRQ_NONE;
+	} else {
+		irq_tab[vec-64].count++;
+		irq_tab[vec-64].handler(vec, irq_tab[vec-64].dev_id, fp);
+		return IRQ_HANDLED;
+	}
+}
+
+int show_mvme16x_interrupts (struct seq_file *p, void *v)
+{
+	int i;
+
+	for (i = 0; i < 192; i++) {
+		if (irq_tab[i].count)
+			seq_printf(p, "Vec 0x%02x: %8d  %s\n",
+			    i+64, irq_tab[i].count,
+			    irq_tab[i].devname ? irq_tab[i].devname : "free");
+	}
+	return 0;
+}
+
+
+static irqreturn_t mvme16x_defhand (int irq, void *dev_id, struct pt_regs *fp)
+{
+	printk ("Unknown interrupt 0x%02x\n", irq);
+	return IRQ_NONE;
+}
+
+
+void mvme16x_enable_irq (unsigned int irq)
+{
+}
+
+
+void mvme16x_disable_irq (unsigned int irq)
+{
+}
+
+
diff --git a/arch/m68k/mvme16x/Makefile b/arch/m68k/mvme16x/Makefile
new file mode 100644
index 0000000..5129f56
--- /dev/null
+++ b/arch/m68k/mvme16x/Makefile
@@ -0,0 +1,5 @@
+#
+# Makefile for Linux arch/m68k/mvme16x source directory
+#
+
+obj-y		:= config.o 16xints.o rtc.o mvme16x_ksyms.o
diff --git a/arch/m68k/mvme16x/config.c b/arch/m68k/mvme16x/config.c
new file mode 100644
index 0000000..26ce81c
--- /dev/null
+++ b/arch/m68k/mvme16x/config.c
@@ -0,0 +1,286 @@
+/*
+ *  arch/m68k/mvme16x/config.c
+ *
+ *  Copyright (C) 1995 Richard Hirst [richard@sleepie.demon.co.uk]
+ *
+ * Based on:
+ *
+ *  linux/amiga/config.c
+ *
+ *  Copyright (C) 1993 Hamish Macdonald
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file README.legal in the main directory of this archive
+ * for more details.
+ */
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/tty.h>
+#include <linux/console.h>
+#include <linux/linkage.h>
+#include <linux/init.h>
+#include <linux/major.h>
+#include <linux/genhd.h>
+#include <linux/rtc.h>
+#include <linux/interrupt.h>
+
+#include <asm/bootinfo.h>
+#include <asm/system.h>
+#include <asm/pgtable.h>
+#include <asm/setup.h>
+#include <asm/irq.h>
+#include <asm/traps.h>
+#include <asm/rtc.h>
+#include <asm/machdep.h>
+#include <asm/mvme16xhw.h>
+
+extern t_bdid mvme_bdid;
+
+static MK48T08ptr_t volatile rtc = (MK48T08ptr_t)MVME_RTC_BASE;
+
+extern irqreturn_t mvme16x_process_int (int level, struct pt_regs *regs);
+extern void mvme16x_init_IRQ (void);
+extern void mvme16x_free_irq (unsigned int, void *);
+extern int show_mvme16x_interrupts (struct seq_file *, void *);
+extern void mvme16x_enable_irq (unsigned int);
+extern void mvme16x_disable_irq (unsigned int);
+static void mvme16x_get_model(char *model);
+static int  mvme16x_get_hardware_list(char *buffer);
+extern int  mvme16x_request_irq(unsigned int irq, irqreturn_t (*handler)(int, void *, struct pt_regs *), unsigned long flags, const char *devname, void *dev_id);
+extern void mvme16x_sched_init(irqreturn_t (*handler)(int, void *, struct pt_regs *));
+extern unsigned long mvme16x_gettimeoffset (void);
+extern int mvme16x_hwclk (int, struct rtc_time *);
+extern int mvme16x_set_clock_mmss (unsigned long);
+extern void mvme16x_reset (void);
+extern void mvme16x_waitbut(void);
+
+int bcd2int (unsigned char b);
+
+/* Save tick handler routine pointer, will point to do_timer() in
+ * kernel/sched.c, called via mvme16x_process_int() */
+
+static irqreturn_t (*tick_handler)(int, void *, struct pt_regs *);
+
+
+unsigned short mvme16x_config;
+
+
+int mvme16x_parse_bootinfo(const struct bi_record *bi)
+{
+	if (bi->tag == BI_VME_TYPE || bi->tag == BI_VME_BRDINFO)
+		return 0;
+	else
+		return 1;
+}
+
+void mvme16x_reset(void)
+{
+	printk ("\r\n\nCalled mvme16x_reset\r\n"
+			"\r\r\r\r\r\r\r\r\r\r\r\r\r\r\r\r\r\r");
+	/* The string of returns is to delay the reset until the whole
+	 * message is output.  Assert reset bit in GCSR */
+	*(volatile char *)0xfff40107 = 0x80;
+}
+
+static void mvme16x_get_model(char *model)
+{
+    p_bdid p = &mvme_bdid;
+    char suf[4];
+
+    suf[1] = p->brdsuffix[0];
+    suf[2] = p->brdsuffix[1];
+    suf[3] = '\0';
+    suf[0] = suf[1] ? '-' : '\0';
+
+    sprintf(model, "Motorola MVME%x%s", p->brdno, suf);
+}
+
+
+static int mvme16x_get_hardware_list(char *buffer)
+{
+    p_bdid p = &mvme_bdid;
+    int len = 0;
+
+    if (p->brdno == 0x0162 || p->brdno == 0x0172)
+    {
+	unsigned char rev = *(unsigned char *)MVME162_VERSION_REG;
+
+	len += sprintf (buffer+len, "VMEchip2        %spresent\n",
+			rev & MVME16x_CONFIG_NO_VMECHIP2 ? "NOT " : "");
+	len += sprintf (buffer+len, "SCSI interface  %spresent\n",
+			rev & MVME16x_CONFIG_NO_SCSICHIP ? "NOT " : "");
+	len += sprintf (buffer+len, "Ethernet i/f    %spresent\n",
+			rev & MVME16x_CONFIG_NO_ETHERNET ? "NOT " : "");
+    }
+    else
+	*buffer = '\0';
+
+    return (len);
+}
+
+
+#define pcc2chip	((volatile u_char *)0xfff42000)
+#define PccSCCMICR	0x1d
+#define PccSCCTICR	0x1e
+#define PccSCCRICR	0x1f
+
+void __init config_mvme16x(void)
+{
+    p_bdid p = &mvme_bdid;
+    char id[40];
+
+    mach_max_dma_address = 0xffffffff;
+    mach_sched_init      = mvme16x_sched_init;
+    mach_init_IRQ        = mvme16x_init_IRQ;
+    mach_gettimeoffset   = mvme16x_gettimeoffset;
+    mach_hwclk           = mvme16x_hwclk;
+    mach_set_clock_mmss	 = mvme16x_set_clock_mmss;
+    mach_reset		 = mvme16x_reset;
+    mach_free_irq	 = mvme16x_free_irq;
+    mach_process_int	 = mvme16x_process_int;
+    mach_get_irq_list	 = show_mvme16x_interrupts;
+    mach_request_irq	 = mvme16x_request_irq;
+    enable_irq           = mvme16x_enable_irq;
+    disable_irq          = mvme16x_disable_irq;
+    mach_get_model       = mvme16x_get_model;
+    mach_get_hardware_list = mvme16x_get_hardware_list;
+
+    /* Report board revision */
+
+    if (strncmp("BDID", p->bdid, 4))
+    {
+	printk ("\n\nBug call .BRD_ID returned garbage - giving up\n\n");
+	while (1)
+		;
+    }
+    /* Board type is only set by newer versions of vmelilo/tftplilo */
+    if (vme_brdtype == 0)
+	vme_brdtype = p->brdno;
+
+    mvme16x_get_model(id);
+    printk ("\nBRD_ID: %s   BUG %x.%x %02x/%02x/%02x\n", id, p->rev>>4,
+					p->rev&0xf, p->yr, p->mth, p->day);
+    if (p->brdno == 0x0162 || p->brdno == 0x172)
+    {
+	unsigned char rev = *(unsigned char *)MVME162_VERSION_REG;
+
+	mvme16x_config = rev | MVME16x_CONFIG_GOT_SCCA;
+
+	printk ("MVME%x Hardware status:\n", p->brdno);
+	printk ("    CPU Type           68%s040\n",
+			rev & MVME16x_CONFIG_GOT_FPU ? "" : "LC");
+	printk ("    CPU clock          %dMHz\n",
+			rev & MVME16x_CONFIG_SPEED_32 ? 32 : 25);
+	printk ("    VMEchip2           %spresent\n",
+			rev & MVME16x_CONFIG_NO_VMECHIP2 ? "NOT " : "");
+	printk ("    SCSI interface     %spresent\n",
+			rev & MVME16x_CONFIG_NO_SCSICHIP ? "NOT " : "");
+	printk ("    Ethernet interface %spresent\n",
+			rev & MVME16x_CONFIG_NO_ETHERNET ? "NOT " : "");
+    }
+    else
+    {
+	mvme16x_config = MVME16x_CONFIG_GOT_LP | MVME16x_CONFIG_GOT_CD2401;
+
+	/* Dont allow any interrupts from the CD2401 until the interrupt */
+	/* handlers are installed					 */
+
+	pcc2chip[PccSCCMICR] = 0x10;
+	pcc2chip[PccSCCTICR] = 0x10;
+	pcc2chip[PccSCCRICR] = 0x10;
+    }
+}
+
+static irqreturn_t mvme16x_abort_int (int irq, void *dev_id, struct pt_regs *fp)
+{
+	p_bdid p = &mvme_bdid;
+	unsigned long *new = (unsigned long *)vectors;
+	unsigned long *old = (unsigned long *)0xffe00000;
+	volatile unsigned char uc, *ucp;
+
+	if (p->brdno == 0x0162 || p->brdno == 0x172)
+	{
+		ucp = (volatile unsigned char *)0xfff42043;
+		uc = *ucp | 8;
+		*ucp = uc;
+	}
+	else
+	{
+		*(volatile unsigned long *)0xfff40074 = 0x40000000;
+	}
+	*(new+4) = *(old+4);		/* Illegal instruction */
+	*(new+9) = *(old+9);		/* Trace */
+	*(new+47) = *(old+47);		/* Trap #15 */
+
+	if (p->brdno == 0x0162 || p->brdno == 0x172)
+		*(new+0x5e) = *(old+0x5e);	/* ABORT switch */
+	else
+		*(new+0x6e) = *(old+0x6e);	/* ABORT switch */
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t mvme16x_timer_int (int irq, void *dev_id, struct pt_regs *fp)
+{
+    *(volatile unsigned char *)0xfff4201b |= 8;
+    return tick_handler(irq, dev_id, fp);
+}
+
+void mvme16x_sched_init (irqreturn_t (*timer_routine)(int, void *, struct pt_regs *))
+{
+    p_bdid p = &mvme_bdid;
+    int irq;
+
+    tick_handler = timer_routine;
+    /* Using PCCchip2 or MC2 chip tick timer 1 */
+    *(volatile unsigned long *)0xfff42008 = 0;
+    *(volatile unsigned long *)0xfff42004 = 10000;	/* 10ms */
+    *(volatile unsigned char *)0xfff42017 |= 3;
+    *(volatile unsigned char *)0xfff4201b = 0x16;
+    if (request_irq(MVME16x_IRQ_TIMER, mvme16x_timer_int, 0,
+				"timer", mvme16x_timer_int))
+	panic ("Couldn't register timer int");
+
+    if (p->brdno == 0x0162 || p->brdno == 0x172)
+	irq = MVME162_IRQ_ABORT;
+    else
+        irq = MVME167_IRQ_ABORT;
+    if (request_irq(irq, mvme16x_abort_int, 0,
+				"abort", mvme16x_abort_int))
+	panic ("Couldn't register abort int");
+}
+
+
+/* This is always executed with interrupts disabled.  */
+unsigned long mvme16x_gettimeoffset (void)
+{
+    return (*(volatile unsigned long *)0xfff42008);
+}
+
+int bcd2int (unsigned char b)
+{
+	return ((b>>4)*10 + (b&15));
+}
+
+int mvme16x_hwclk(int op, struct rtc_time *t)
+{
+#warning check me!
+	if (!op) {
+		rtc->ctrl = RTC_READ;
+		t->tm_year = bcd2int (rtc->bcd_year);
+		t->tm_mon  = bcd2int (rtc->bcd_mth);
+		t->tm_mday = bcd2int (rtc->bcd_dom);
+		t->tm_hour = bcd2int (rtc->bcd_hr);
+		t->tm_min  = bcd2int (rtc->bcd_min);
+		t->tm_sec  = bcd2int (rtc->bcd_sec);
+		rtc->ctrl = 0;
+	}
+	return 0;
+}
+
+int mvme16x_set_clock_mmss (unsigned long nowtime)
+{
+	return 0;
+}
+
diff --git a/arch/m68k/mvme16x/mvme16x_ksyms.c b/arch/m68k/mvme16x/mvme16x_ksyms.c
new file mode 100644
index 0000000..4a8a363
--- /dev/null
+++ b/arch/m68k/mvme16x/mvme16x_ksyms.c
@@ -0,0 +1,6 @@
+#include <linux/module.h>
+#include <linux/types.h>
+#include <asm/ptrace.h>
+#include <asm/mvme16xhw.h>
+
+EXPORT_SYMBOL(mvme16x_config);
diff --git a/arch/m68k/mvme16x/rtc.c b/arch/m68k/mvme16x/rtc.c
new file mode 100644
index 0000000..8a24250
--- /dev/null
+++ b/arch/m68k/mvme16x/rtc.c
@@ -0,0 +1,172 @@
+/*
+ *	Real Time Clock interface for Linux on the MVME16x
+ *
+ * Based on the PC driver by Paul Gortmaker.
+ */
+
+#define RTC_VERSION		"1.00"
+
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/miscdevice.h>
+#include <linux/slab.h>
+#include <linux/ioport.h>
+#include <linux/fcntl.h>
+#include <linux/init.h>
+#include <linux/poll.h>
+#include <linux/mc146818rtc.h>	/* For struct rtc_time and ioctls, etc */
+#include <linux/smp_lock.h>
+#include <asm/mvme16xhw.h>
+
+#include <asm/io.h>
+#include <asm/uaccess.h>
+#include <asm/system.h>
+#include <asm/setup.h>
+
+/*
+ *	We sponge a minor off of the misc major. No need slurping
+ *	up another valuable major dev number for this. If you add
+ *	an ioctl, make sure you don't conflict with SPARC's RTC
+ *	ioctls.
+ */
+
+#define BCD2BIN(val) (((val)&15) + ((val)>>4)*10)
+#define BIN2BCD(val) ((((val)/10)<<4) + (val)%10)
+
+static const unsigned char days_in_mo[] =
+{0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
+
+static atomic_t rtc_ready = ATOMIC_INIT(1);
+
+static int rtc_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
+		     unsigned long arg)
+{
+	volatile MK48T08ptr_t rtc = (MK48T08ptr_t)MVME_RTC_BASE;
+	unsigned long flags;
+	struct rtc_time wtime;
+
+	switch (cmd) {
+	case RTC_RD_TIME:	/* Read the time/date from RTC	*/
+	{
+		local_irq_save(flags);
+		/* Ensure clock and real-time-mode-register are accessible */
+		rtc->ctrl = RTC_READ;
+		memset(&wtime, 0, sizeof(struct rtc_time));
+		wtime.tm_sec =  BCD2BIN(rtc->bcd_sec);
+		wtime.tm_min =  BCD2BIN(rtc->bcd_min);
+		wtime.tm_hour = BCD2BIN(rtc->bcd_hr);
+		wtime.tm_mday =  BCD2BIN(rtc->bcd_dom);
+		wtime.tm_mon =  BCD2BIN(rtc->bcd_mth)-1;
+		wtime.tm_year = BCD2BIN(rtc->bcd_year);
+		if (wtime.tm_year < 70)
+			wtime.tm_year += 100;
+		wtime.tm_wday = BCD2BIN(rtc->bcd_dow)-1;
+		rtc->ctrl = 0;
+		local_irq_restore(flags);
+		return copy_to_user((void *)arg, &wtime, sizeof wtime) ?
+								-EFAULT : 0;
+	}
+	case RTC_SET_TIME:	/* Set the RTC */
+	{
+		struct rtc_time rtc_tm;
+		unsigned char mon, day, hrs, min, sec, leap_yr;
+		unsigned int yrs;
+
+		if (!capable(CAP_SYS_ADMIN))
+			return -EACCES;
+
+		if (copy_from_user(&rtc_tm, (struct rtc_time*)arg,
+				   sizeof(struct rtc_time)))
+			return -EFAULT;
+
+		yrs = rtc_tm.tm_year;
+		if (yrs < 1900)
+			yrs += 1900;
+		mon = rtc_tm.tm_mon + 1;   /* tm_mon starts at zero */
+		day = rtc_tm.tm_mday;
+		hrs = rtc_tm.tm_hour;
+		min = rtc_tm.tm_min;
+		sec = rtc_tm.tm_sec;
+
+		leap_yr = ((!(yrs % 4) && (yrs % 100)) || !(yrs % 400));
+
+		if ((mon > 12) || (day == 0))
+			return -EINVAL;
+
+		if (day > (days_in_mo[mon] + ((mon == 2) && leap_yr)))
+			return -EINVAL;
+
+		if ((hrs >= 24) || (min >= 60) || (sec >= 60))
+			return -EINVAL;
+
+		if (yrs >= 2070)
+			return -EINVAL;
+
+		local_irq_save(flags);
+		rtc->ctrl     = RTC_WRITE;
+
+		rtc->bcd_sec  = BIN2BCD(sec);
+		rtc->bcd_min  = BIN2BCD(min);
+		rtc->bcd_hr   = BIN2BCD(hrs);
+		rtc->bcd_dom  = BIN2BCD(day);
+		rtc->bcd_mth  = BIN2BCD(mon);
+		rtc->bcd_year = BIN2BCD(yrs%100);
+
+		rtc->ctrl     = 0;
+		local_irq_restore(flags);
+		return 0;
+	}
+	default:
+		return -EINVAL;
+	}
+}
+
+/*
+ *	We enforce only one user at a time here with the open/close.
+ *	Also clear the previous interrupt data on an open, and clean
+ *	up things on a close.
+ */
+
+static int rtc_open(struct inode *inode, struct file *file)
+{
+	if( !atomic_dec_and_test(&rtc_ready) )
+	{
+		atomic_inc( &rtc_ready );
+		return -EBUSY;
+	}
+
+	return 0;
+}
+
+static int rtc_release(struct inode *inode, struct file *file)
+{
+	atomic_inc( &rtc_ready );
+	return 0;
+}
+
+/*
+ *	The various file operations we support.
+ */
+
+static struct file_operations rtc_fops = {
+	.ioctl =	rtc_ioctl,
+	.open =		rtc_open,
+	.release =	rtc_release,
+};
+
+static struct miscdevice rtc_dev=
+{
+	.minor =	RTC_MINOR,
+	.name =		"rtc",
+	.fops =		&rtc_fops
+};
+
+int __init rtc_MK48T08_init(void)
+{
+	if (!MACH_IS_MVME16x)
+		return -ENODEV;
+
+	printk(KERN_INFO "MK48T08 Real Time Clock Driver v%s\n", RTC_VERSION);
+	return misc_register(&rtc_dev);
+}
+