5 files changed, 108 insertions, 18 deletions

diff --git a/arch/sh/kernel/cpu/irq/Makefile b/arch/sh/kernel/cpu/irq/Makefile
index e3cccea15e1d..1c034c283f59 100644
--- a/arch/sh/kernel/cpu/irq/Makefile
+++ b/arch/sh/kernel/cpu/irq/Makefile
@@ -3,5 +3,6 @@
 #
 obj-y   += ipr.o imask.o
 
-obj-$(CONFIG_CPU_HAS_PINT_IRQ)  += pint.o
-obj-$(CONFIG_CPU_HAS_INTC2_IRQ) += intc2.o
+obj-$(CONFIG_CPU_HAS_PINT_IRQ)          += pint.o
+obj-$(CONFIG_CPU_HAS_MASKREG_IRQ)       += maskreg.o
+obj-$(CONFIG_CPU_HAS_INTC2_IRQ)         += intc2.o
diff --git a/arch/sh/kernel/cpu/irq/intc2.c b/arch/sh/kernel/cpu/irq/intc2.c
index 30064bf6e154..e30e4b7aa70e 100644
--- a/arch/sh/kernel/cpu/irq/intc2.c
+++ b/arch/sh/kernel/cpu/irq/intc2.c
@@ -241,9 +241,9 @@ static struct intc2_init {
         /* 110-111 reserved/unused */
 #elif defined(CONFIG_CPU_SUBTYPE_SH7780)
         { TIMER_IRQ, 0, 24, 0, INTC_TMU0_MSK, 2},
-#ifdef CONFIG_SH_RTC
-        { RTC_IRQ, 4, 0, 0, INTC_RTC_MSK, TIMER_PRIORITY },
-#endif
+        { 21, 1, 0, 0, INTC_RTC_MSK, TIMER_PRIORITY },
+        { 22, 1, 1, 0, INTC_RTC_MSK, TIMER_PRIORITY },
+        { 23, 1, 2, 0, INTC_RTC_MSK, TIMER_PRIORITY },
         { SCIF0_ERI_IRQ, 8, 24, 0, INTC_SCIF0_MSK, SCIF0_PRIORITY },
         { SCIF0_RXI_IRQ, 8, 24, 0, INTC_SCIF0_MSK, SCIF0_PRIORITY },
         { SCIF0_BRI_IRQ, 8, 24, 0, INTC_SCIF0_MSK, SCIF0_PRIORITY },
diff --git a/arch/sh/kernel/cpu/irq/ipr.c b/arch/sh/kernel/cpu/irq/ipr.c
index 0f545941fb4f..f785822cd5de 100644
--- a/arch/sh/kernel/cpu/irq/ipr.c
+++ b/arch/sh/kernel/cpu/irq/ipr.c
@@ -57,31 +57,27 @@ static struct hw_interrupt_type ipr_irq_type = {
 
 static void disable_ipr_irq(unsigned int irq)
 {
-        unsigned long val, flags;
+        unsigned long val;
         unsigned int addr = ipr_data[irq].addr;
         unsigned short mask = 0xffff ^ (0x0f << ipr_data[irq].shift);
 
         /* Set the priority in IPR to 0 */
-        local_irq_save(flags);
         val = ctrl_inw(addr);
         val &= mask;
         ctrl_outw(val, addr);
-        local_irq_restore(flags);
 }
 
 static void enable_ipr_irq(unsigned int irq)
 {
-        unsigned long val, flags;
+        unsigned long val;
         unsigned int addr = ipr_data[irq].addr;
         int priority = ipr_data[irq].priority;
         unsigned short value = (priority << ipr_data[irq].shift);
 
         /* Set priority in IPR back to original value */
-        local_irq_save(flags);
         val = ctrl_inw(addr);
         val |= value;
         ctrl_outw(val, addr);
-        local_irq_restore(flags);
 }
 
 static void mask_and_ack_ipr(unsigned int irq)
@@ -89,6 +85,7 @@ static void mask_and_ack_ipr(unsigned int irq)
         disable_ipr_irq(irq);
 
 #if defined(CONFIG_CPU_SUBTYPE_SH7707) || defined(CONFIG_CPU_SUBTYPE_SH7709) || \
+    defined(CONFIG_CPU_SUBTYPE_SH7706) || \
     defined(CONFIG_CPU_SUBTYPE_SH7300) || defined(CONFIG_CPU_SUBTYPE_SH7705)
         /* This is needed when we use edge triggered setting */
         /* XXX: Is it really needed? */
@@ -123,7 +120,7 @@ void __init init_IRQ(void)
 #ifndef CONFIG_CPU_SUBTYPE_SH7780
         make_ipr_irq(TIMER_IRQ, TIMER_IPR_ADDR, TIMER_IPR_POS, TIMER_PRIORITY);
         make_ipr_irq(TIMER1_IRQ, TIMER1_IPR_ADDR, TIMER1_IPR_POS, TIMER1_PRIORITY);
-#if defined(CONFIG_SH_RTC)
+#ifdef RTC_IRQ
         make_ipr_irq(RTC_IRQ, RTC_IPR_ADDR, RTC_IPR_POS, RTC_PRIORITY);
 #endif
 
@@ -162,6 +159,7 @@ void __init init_IRQ(void)
 #endif
 
 #if defined(CONFIG_CPU_SUBTYPE_SH7707) || defined(CONFIG_CPU_SUBTYPE_SH7709) || \
+    defined(CONFIG_CPU_SUBTYPE_SH7706) || \
     defined(CONFIG_CPU_SUBTYPE_SH7300) || defined(CONFIG_CPU_SUBTYPE_SH7705)
         /*
          * Initialize the Interrupt Controller (INTC)
@@ -192,6 +190,8 @@ void __init init_IRQ(void)
         /* Perform the machine specific initialisation */
         if (sh_mv.mv_init_irq != NULL)
                 sh_mv.mv_init_irq();
+
+        irq_ctx_init(smp_processor_id());
 }
 
 #if !defined(CONFIG_CPU_HAS_PINT_IRQ)
diff --git a/arch/sh/kernel/cpu/irq/maskreg.c b/arch/sh/kernel/cpu/irq/maskreg.c
new file mode 100644
index 000000000000..492db31b3cab
--- /dev/null
+++ b/arch/sh/kernel/cpu/irq/maskreg.c
@@ -0,0 +1,93 @@
+/*
+ * Interrupt handling for Simple external interrupt mask register
+ *
+ * Copyright (C) 2001 A&D Co., Ltd. <http://www.aandd.co.jp>
+ *
+ * This is for the machine which have single 16 bit register
+ * for masking external IRQ individually.
+ * Each bit of the register is for masking each interrupt.
+ *
+ * This file may be copied or modified under the terms of the GNU
+ * General Public License.  See linux/COPYING for more information.
+ */
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/irq.h>
+#include <asm/system.h>
+#include <asm/io.h>
+
+/* address of external interrupt mask register */
+unsigned long irq_mask_register;
+
+/* forward declaration */
+static unsigned int startup_maskreg_irq(unsigned int irq);
+static void shutdown_maskreg_irq(unsigned int irq);
+static void enable_maskreg_irq(unsigned int irq);
+static void disable_maskreg_irq(unsigned int irq);
+static void mask_and_ack_maskreg(unsigned int);
+static void end_maskreg_irq(unsigned int irq);
+
+/* hw_interrupt_type */
+static struct hw_interrupt_type maskreg_irq_type = {
+        .typename = "Mask Register",
+        .startup = startup_maskreg_irq,
+        .shutdown = shutdown_maskreg_irq,
+        .enable = enable_maskreg_irq,
+        .disable = disable_maskreg_irq,
+        .ack = mask_and_ack_maskreg,
+        .end = end_maskreg_irq
+};
+
+/* actual implementatin */
+static unsigned int startup_maskreg_irq(unsigned int irq)
+{
+        enable_maskreg_irq(irq);
+        return 0; /* never anything pending */
+}
+
+static void shutdown_maskreg_irq(unsigned int irq)
+{
+        disable_maskreg_irq(irq);
+}
+
+static void disable_maskreg_irq(unsigned int irq)
+{
+        unsigned short val, mask = 0x01 << irq;
+
+        BUG_ON(!irq_mask_register);
+
+        /* Set "irq"th bit */
+        val = ctrl_inw(irq_mask_register);
+        val |= mask;
+        ctrl_outw(val, irq_mask_register);
+}
+
+static void enable_maskreg_irq(unsigned int irq)
+{
+        unsigned short val, mask = ~(0x01 << irq);
+
+        BUG_ON(!irq_mask_register);
+
+        /* Clear "irq"th bit */
+        val = ctrl_inw(irq_mask_register);
+        val &= mask;
+        ctrl_outw(val, irq_mask_register);
+}
+
+static void mask_and_ack_maskreg(unsigned int irq)
+{
+        disable_maskreg_irq(irq);
+}
+
+static void end_maskreg_irq(unsigned int irq)
+{
+        if (!(irq_desc[irq].status & (IRQ_DISABLED|IRQ_INPROGRESS)))
+                enable_maskreg_irq(irq);
+}
+
+void make_maskreg_irq(unsigned int irq)
+{
+        disable_irq_nosync(irq);
+        irq_desc[irq].handler = &maskreg_irq_type;
+        disable_maskreg_irq(irq);
+}
diff --git a/arch/sh/kernel/cpu/irq/pint.c b/arch/sh/kernel/cpu/irq/pint.c
index 80cd8108d36a..17f47b373d6e 100644
--- a/arch/sh/kernel/cpu/irq/pint.c
+++ b/arch/sh/kernel/cpu/irq/pint.c
@@ -48,26 +48,22 @@ static struct hw_interrupt_type pint_irq_type = {
 
 static void disable_pint_irq(unsigned int irq)
 {
-        unsigned long val, flags;
+        unsigned long val;
 
-        local_irq_save(flags);
         val = ctrl_inw(INTC_INTER);
         val &= ~(1 << (irq - PINT_IRQ_BASE));
         ctrl_outw(val, INTC_INTER);     /* disable PINTn */
         portcr_mask &= ~(3 << (irq - PINT_IRQ_BASE)*2);
-        local_irq_restore(flags);
 }
 
 static void enable_pint_irq(unsigned int irq)
 {
-        unsigned long val, flags;
+        unsigned long val;
 
-        local_irq_save(flags);
         val = ctrl_inw(INTC_INTER);
         val |= 1 << (irq - PINT_IRQ_BASE);
         ctrl_outw(val, INTC_INTER);     /* enable PINTn */
         portcr_mask |= 3 << (irq - PINT_IRQ_BASE)*2;
-        local_irq_restore(flags);
 }
 
 static void mask_and_ack_pint(unsigned int irq)