1 files changed, 133 insertions, 0 deletions

diff --git a/include/asm-v850/v850e_intc.h b/include/asm-v850/v850e_intc.h
new file mode 100644
index 000000000000..6fdf95708317
--- /dev/null
+++ b/include/asm-v850/v850e_intc.h
@@ -0,0 +1,133 @@
+/*
+ * include/asm-v850/v850e_intc.h -- V850E CPU interrupt controller (INTC)
+ *
+ *  Copyright (C) 2001,02,03  NEC Electronics Corporation
+ *  Copyright (C) 2001,02,03  Miles Bader <miles@gnu.org>
+ *
+ * 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.
+ *
+ * Written by Miles Bader <miles@gnu.org>
+ */
+
+#ifndef __V850_V850E_INTC_H__
+#define __V850_V850E_INTC_H__
+
+
+/* There are 4 16-bit `Interrupt Mask Registers' located contiguously
+   starting from this base.  Each interrupt uses a single bit to
+   indicated enabled/disabled status.  */
+#define V850E_INTC_IMR_BASE_ADDR  0xFFFFF100
+#define V850E_INTC_IMR_ADDR(irq)  (V850E_INTC_IMR_BASE_ADDR + ((irq) >> 3))
+#define V850E_INTC_IMR_BIT(irq)   ((irq) & 0x7)
+
+/* Each maskable interrupt has a single-byte control register at this
+   address.  */
+#define V850E_INTC_IC_BASE_ADDR   0xFFFFF110
+#define V850E_INTC_IC_ADDR(irq)   (V850E_INTC_IC_BASE_ADDR + ((irq) << 1))
+#define V850E_INTC_IC(irq)        (*(volatile u8 *)V850E_INTC_IC_ADDR(irq))
+/* Encode priority PR for storing in an interrupt control register.  */
+#define V850E_INTC_IC_PR(pr)      (pr)
+/* Interrupt disable bit in an interrupt control register.  */
+#define V850E_INTC_IC_MK_BIT      6
+#define V850E_INTC_IC_MK          (1 << V850E_INTC_IC_MK_BIT)
+/* Interrupt pending flag in an interrupt control register.  */
+#define V850E_INTC_IC_IF_BIT      7
+#define V850E_INTC_IC_IF          (1 << V850E_INTC_IC_IF_BIT)
+
+/* The ISPR (In-service priority register) contains one bit for each interrupt
+   priority level, which is set to one when that level is currently being
+   serviced (and thus blocking any interrupts of equal or lesser level).  */
+#define V850E_INTC_ISPR_ADDR      0xFFFFF1FA
+#define V850E_INTC_ISPR           (*(volatile u8 *)V850E_INTC_ISPR_ADDR)
+
+
+#ifndef __ASSEMBLY__
+
+/* Enable interrupt handling for interrupt IRQ.  */
+static inline void v850e_intc_enable_irq (unsigned irq)
+{
+        __asm__ __volatile__ ("clr1 %0, [%1]"
+                              :: "r" (V850E_INTC_IMR_BIT (irq)),
+                                 "r" (V850E_INTC_IMR_ADDR (irq))
+                              : "memory");
+}
+
+/* Disable interrupt handling for interrupt IRQ.  Note that any
+   interrupts received while disabled will be delivered once the
+   interrupt is enabled again, unless they are explicitly cleared using
+   `v850e_intc_clear_pending_irq'.  */
+static inline void v850e_intc_disable_irq (unsigned irq)
+{
+        __asm__ __volatile__ ("set1 %0, [%1]"
+                              :: "r" (V850E_INTC_IMR_BIT (irq)),
+                                 "r" (V850E_INTC_IMR_ADDR (irq))
+                              : "memory");
+}
+
+/* Return true if interrupt handling for interrupt IRQ is enabled.  */
+static inline int v850e_intc_irq_enabled (unsigned irq)
+{
+        int rval;
+        __asm__ __volatile__ ("tst1 %1, [%2]; setf z, %0"
+                              : "=r" (rval)
+                              : "r" (V850E_INTC_IMR_BIT (irq)),
+                                "r" (V850E_INTC_IMR_ADDR (irq)));
+        return rval;
+}
+
+/* Disable irqs from 0 until LIMIT.  LIMIT must be a multiple of 8.  */
+static inline void _v850e_intc_disable_irqs (unsigned limit)
+{
+        unsigned long addr;
+        for (addr = V850E_INTC_IMR_BASE_ADDR; limit >= 8; addr++, limit -= 8)
+                *(char *)addr = 0xFF;
+}
+
+/* Disable all irqs.  This is purposely a macro, because NUM_MACH_IRQS
+   will be only be defined later.  */
+#define v850e_intc_disable_irqs()   _v850e_intc_disable_irqs (NUM_MACH_IRQS)
+
+/* Clear any pending interrupts for IRQ.  */
+static inline void v850e_intc_clear_pending_irq (unsigned irq)
+{
+        __asm__ __volatile__ ("clr1 %0, 0[%1]"
+                              :: "i" (V850E_INTC_IC_IF_BIT),
+                                 "r" (V850E_INTC_IC_ADDR (irq))
+                              : "memory");
+}
+
+/* Return true if interrupt IRQ is pending (but disabled).  */
+static inline int v850e_intc_irq_pending (unsigned irq)
+{
+        int rval;
+        __asm__ __volatile__ ("tst1 %1, 0[%2]; setf nz, %0"
+                              : "=r" (rval)
+                              : "i" (V850E_INTC_IC_IF_BIT),
+                                "r" (V850E_INTC_IC_ADDR (irq)));
+        return rval;
+}
+
+
+struct v850e_intc_irq_init {
+        const char *name;       /* name of interrupt type */
+
+        /* Range of kernel irq numbers for this type:
+           BASE, BASE+INTERVAL, ..., BASE+INTERVAL*NUM  */
+        unsigned base, num, interval;
+
+        unsigned priority;      /* interrupt priority to assign */
+};
+struct hw_interrupt_type;       /* fwd decl */
+
+/* Initialize HW_IRQ_TYPES for INTC-controlled irqs described in array
+   INITS (which is terminated by an entry with the name field == 0).  */
+extern void v850e_intc_init_irq_types (struct v850e_intc_irq_init *inits,
+                                       struct hw_interrupt_type *hw_irq_types);
+
+
+#endif /* !__ASSEMBLY__ */
+
+
+#endif /* __V850_V850E_INTC_H__ */