v4.19.13 snapshot.
diff --git a/arch/m68k/sun3/sun3ints.c b/arch/m68k/sun3/sun3ints.c
new file mode 100644
index 0000000..6bbca30
--- /dev/null
+++ b/arch/m68k/sun3/sun3ints.c
@@ -0,0 +1,99 @@
+ /*
+ * linux/arch/m68k/sun3/sun3ints.c -- Sun-3(x) Linux interrupt handling code
+ *
+ * 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.
+ */
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/kernel_stat.h>
+#include <linux/interrupt.h>
+#include <asm/segment.h>
+#include <asm/intersil.h>
+#include <asm/oplib.h>
+#include <asm/sun3ints.h>
+#include <asm/irq_regs.h>
+#include <linux/seq_file.h>
+
+extern void sun3_leds (unsigned char);
+
+void sun3_disable_interrupts(void)
+{
+ sun3_disable_irq(0);
+}
+
+void sun3_enable_interrupts(void)
+{
+ sun3_enable_irq(0);
+}
+
+static int led_pattern[8] = {
+ ~(0x80), ~(0x01),
+ ~(0x40), ~(0x02),
+ ~(0x20), ~(0x04),
+ ~(0x10), ~(0x08)
+};
+
+volatile unsigned char* sun3_intreg;
+
+void sun3_enable_irq(unsigned int irq)
+{
+ *sun3_intreg |= (1 << irq);
+}
+
+void sun3_disable_irq(unsigned int irq)
+{
+ *sun3_intreg &= ~(1 << irq);
+}
+
+static irqreturn_t sun3_int7(int irq, void *dev_id)
+{
+ unsigned int cnt;
+
+ cnt = kstat_irqs_cpu(irq, 0);
+ if (!(cnt % 2000))
+ sun3_leds(led_pattern[cnt % 16000 / 2000]);
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t sun3_int5(int irq, void *dev_id)
+{
+ unsigned int cnt;
+
+#ifdef CONFIG_SUN3
+ intersil_clear();
+#endif
+ sun3_disable_irq(5);
+ sun3_enable_irq(5);
+#ifdef CONFIG_SUN3
+ intersil_clear();
+#endif
+ xtime_update(1);
+ update_process_times(user_mode(get_irq_regs()));
+ cnt = kstat_irqs_cpu(irq, 0);
+ if (!(cnt % 20))
+ sun3_leds(led_pattern[cnt % 160 / 20]);
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t sun3_vec255(int irq, void *dev_id)
+{
+ return IRQ_HANDLED;
+}
+
+void __init sun3_init_IRQ(void)
+{
+ *sun3_intreg = 1;
+
+ m68k_setup_user_interrupt(VEC_USER, 128);
+
+ if (request_irq(IRQ_AUTO_5, sun3_int5, 0, "clock", NULL))
+ pr_err("Couldn't register %s interrupt\n", "int5");
+ if (request_irq(IRQ_AUTO_7, sun3_int7, 0, "nmi", NULL))
+ pr_err("Couldn't register %s interrupt\n", "int7");
+ if (request_irq(IRQ_USER+127, sun3_vec255, 0, "vec255", NULL))
+ pr_err("Couldn't register %s interrupt\n", "vec255");
+}