sh: Move the shared INTC code out to drivers/sh/

The INTC code will be re-used across different architectures, so move
this out to drivers/sh/ and include/linux/sh_intc.h respectively.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 91 insertions, 0 deletions

diff --git a/include/linux/sh_intc.h b/include/linux/sh_intc.h
new file mode 100644
index 000000000000..68e212ff9dde
--- /dev/null
+++ b/include/linux/sh_intc.h
@@ -0,0 +1,91 @@
+#ifndef __SH_INTC_H
+#define __SH_INTC_H
+
+typedef unsigned char intc_enum;
+
+struct intc_vect {
+        intc_enum enum_id;
+        unsigned short vect;
+};
+
+#define INTC_VECT(enum_id, vect) { enum_id, vect }
+#define INTC_IRQ(enum_id, irq) INTC_VECT(enum_id, irq2evt(irq))
+
+struct intc_group {
+        intc_enum enum_id;
+        intc_enum enum_ids[32];
+};
+
+#define INTC_GROUP(enum_id, ids...) { enum_id, { ids } }
+
+struct intc_mask_reg {
+        unsigned long set_reg, clr_reg, reg_width;
+        intc_enum enum_ids[32];
+#ifdef CONFIG_SMP
+        unsigned long smp;
+#endif
+};
+
+struct intc_prio_reg {
+        unsigned long set_reg, clr_reg, reg_width, field_width;
+        intc_enum enum_ids[16];
+#ifdef CONFIG_SMP
+        unsigned long smp;
+#endif
+};
+
+struct intc_sense_reg {
+        unsigned long reg, reg_width, field_width;
+        intc_enum enum_ids[16];
+};
+
+#ifdef CONFIG_SMP
+#define INTC_SMP(stride, nr) .smp = (stride) | ((nr) << 8)
+#else
+#define INTC_SMP(stride, nr)
+#endif
+
+struct intc_desc {
+        struct intc_vect *vectors;
+        unsigned int nr_vectors;
+        struct intc_group *groups;
+        unsigned int nr_groups;
+        struct intc_mask_reg *mask_regs;
+        unsigned int nr_mask_regs;
+        struct intc_prio_reg *prio_regs;
+        unsigned int nr_prio_regs;
+        struct intc_sense_reg *sense_regs;
+        unsigned int nr_sense_regs;
+        char *name;
+#if defined(CONFIG_CPU_SH3) || defined(CONFIG_CPU_SH4A)
+        struct intc_mask_reg *ack_regs;
+        unsigned int nr_ack_regs;
+#endif
+};
+
+#define _INTC_ARRAY(a) a, sizeof(a)/sizeof(*a)
+#define DECLARE_INTC_DESC(symbol, chipname, vectors, groups,            \
+        mask_regs, prio_regs, sense_regs)                               \
+struct intc_desc symbol __initdata = {                                  \
+        _INTC_ARRAY(vectors), _INTC_ARRAY(groups),                      \
+        _INTC_ARRAY(mask_regs), _INTC_ARRAY(prio_regs),                 \
+        _INTC_ARRAY(sense_regs),                                        \
+        chipname,                                                       \
+}
+
+#if defined(CONFIG_CPU_SH3) || defined(CONFIG_CPU_SH4A)
+#define DECLARE_INTC_DESC_ACK(symbol, chipname, vectors, groups,        \
+        mask_regs, prio_regs, sense_regs, ack_regs)                     \
+struct intc_desc symbol __initdata = {                                  \
+        _INTC_ARRAY(vectors), _INTC_ARRAY(groups),                      \
+        _INTC_ARRAY(mask_regs), _INTC_ARRAY(prio_regs),                 \
+        _INTC_ARRAY(sense_regs),                                        \
+        chipname,                                                       \
+        _INTC_ARRAY(ack_regs),                                          \
+}
+#endif
+
+void __init register_intc_controller(struct intc_desc *desc);
+int intc_set_priority(unsigned int irq, unsigned int prio);
+
+#endif /* __SH_INTC_H */