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 000000000000..793ef735b59c
--- /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 000000000000..5129f56b64a3
--- /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 000000000000..26ce81c1337d
--- /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 000000000000..4a8a3634bb47
--- /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 000000000000..8a2425069088
--- /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);
+}
+