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-rw-r--r--arch/m68k/mvme16x/16xints.c149
-rw-r--r--arch/m68k/mvme16x/Makefile5
-rw-r--r--arch/m68k/mvme16x/config.c286
-rw-r--r--arch/m68k/mvme16x/mvme16x_ksyms.c6
-rw-r--r--arch/m68k/mvme16x/rtc.c172
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);
+}
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-17 17:10:29 +0100