v4.19.13 snapshot.
diff --git a/arch/sparc/kernel/irq.h b/arch/sparc/kernel/irq.h
new file mode 100644
index 0000000..b02026a
--- /dev/null
+++ b/arch/sparc/kernel/irq.h
@@ -0,0 +1,102 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#include <linux/platform_device.h>
+
+#include <asm/cpu_type.h>
+
+struct irq_bucket {
+ struct irq_bucket *next;
+ unsigned int real_irq;
+ unsigned int irq;
+ unsigned int pil;
+};
+
+#define SUN4M_HARD_INT(x) (0x000000001 << (x))
+#define SUN4M_SOFT_INT(x) (0x000010000 << (x))
+
+#define SUN4D_MAX_BOARD 10
+#define SUN4D_MAX_IRQ ((SUN4D_MAX_BOARD + 2) << 5)
+
+/* Map between the irq identifier used in hw to the
+ * irq_bucket. The map is sufficient large to hold
+ * the sun4d hw identifiers.
+ */
+extern struct irq_bucket *irq_map[SUN4D_MAX_IRQ];
+
+
+/* sun4m specific type definitions */
+
+/* This maps direct to CPU specific interrupt registers */
+struct sun4m_irq_percpu {
+ u32 pending;
+ u32 clear;
+ u32 set;
+};
+
+/* This maps direct to global interrupt registers */
+struct sun4m_irq_global {
+ u32 pending;
+ u32 mask;
+ u32 mask_clear;
+ u32 mask_set;
+ u32 interrupt_target;
+};
+
+extern struct sun4m_irq_percpu __iomem *sun4m_irq_percpu[SUN4M_NCPUS];
+extern struct sun4m_irq_global __iomem *sun4m_irq_global;
+
+/* The following definitions describe the individual platform features: */
+#define FEAT_L10_CLOCKSOURCE (1 << 0) /* L10 timer is used as a clocksource */
+#define FEAT_L10_CLOCKEVENT (1 << 1) /* L10 timer is used as a clockevent */
+#define FEAT_L14_ONESHOT (1 << 2) /* L14 timer clockevent can oneshot */
+
+/*
+ * Platform specific configuration
+ * The individual platforms assign their platform
+ * specifics in their init functions.
+ */
+struct sparc_config {
+ void (*init_timers)(void);
+ unsigned int (*build_device_irq)(struct platform_device *op,
+ unsigned int real_irq);
+
+ /* generic clockevent features - see FEAT_* above */
+ int features;
+
+ /* clock rate used for clock event timer */
+ int clock_rate;
+
+ /* one period for clock source timer */
+ unsigned int cs_period;
+
+ /* function to obtain offsett for cs period */
+ unsigned int (*get_cycles_offset)(void);
+
+ void (*clear_clock_irq)(void);
+ void (*load_profile_irq)(int cpu, unsigned int limit);
+};
+extern struct sparc_config sparc_config;
+
+unsigned int irq_alloc(unsigned int real_irq, unsigned int pil);
+void irq_link(unsigned int irq);
+void irq_unlink(unsigned int irq);
+void handler_irq(unsigned int pil, struct pt_regs *regs);
+
+unsigned long leon_get_irqmask(unsigned int irq);
+
+/* irq_32.c */
+void sparc_floppy_irq(int irq, void *dev_id, struct pt_regs *regs);
+
+/* sun4m_irq.c */
+void sun4m_nmi(struct pt_regs *regs);
+
+/* sun4d_irq.c */
+void sun4d_handler_irq(unsigned int pil, struct pt_regs *regs);
+
+#ifdef CONFIG_SMP
+
+/* All SUN4D IPIs are sent on this IRQ, may be shared with hard IRQs */
+#define SUN4D_IPI_IRQ 13
+
+void sun4d_ipi_interrupt(void);
+
+#endif