53 files changed, 412 insertions, 303 deletions

diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S
index cc10a093a545..d645897652c2 100644
--- a/arch/arm/kernel/entry-armv.S
+++ b/arch/arm/kernel/entry-armv.S
@@ -27,6 +27,7 @@
  * Interrupt handling.  Preserves r7, r8, r9
  */
         .macro  irq_handler
+        get_irqnr_preamble r5, lr
 1:      get_irqnr_and_base r0, r6, r5, lr
         movne   r1, sp
         @
diff --git a/arch/arm/kernel/entry-common.S b/arch/arm/kernel/entry-common.S
index 6f5e7c50d42f..c589dc3ecd1a 100644
--- a/arch/arm/kernel/entry-common.S
+++ b/arch/arm/kernel/entry-common.S
@@ -9,6 +9,7 @@
  */
 
 #include <asm/unistd.h>
+#include <asm/arch/entry-macro.S>
 
 #include "entry-header.S"
 
@@ -25,6 +26,9 @@ ret_fast_syscall:
         tst     r1, #_TIF_WORK_MASK
         bne     fast_work_pending
 
+        /* perform architecture specific actions before user return */
+        arch_ret_to_user r1, lr
+
         @ fast_restore_user_regs
         ldr     r1, [sp, #S_OFF + S_PSR]        @ get calling cpsr
         ldr     lr, [sp, #S_OFF + S_PC]!        @ get pc
@@ -61,6 +65,9 @@ ret_slow_syscall:
         tst     r1, #_TIF_WORK_MASK
         bne     work_pending
 no_work_pending:
+        /* perform architecture specific actions before user return */
+        arch_ret_to_user r1, lr
+
         @ slow_restore_user_regs
         ldr     r1, [sp, #S_PSR]                @ get calling cpsr
         ldr     lr, [sp, #S_PC]!                @ get pc
diff --git a/arch/arm/mach-iop13xx/Makefile b/arch/arm/mach-iop13xx/Makefile
index c3d6c08f2d4c..4185e0586c33 100644
--- a/arch/arm/mach-iop13xx/Makefile
+++ b/arch/arm/mach-iop13xx/Makefile
@@ -5,7 +5,6 @@ obj-			:=
 
 obj-$(CONFIG_ARCH_IOP13XX) += setup.o
 obj-$(CONFIG_ARCH_IOP13XX) += irq.o
-obj-$(CONFIG_ARCH_IOP13XX) += time.o
 obj-$(CONFIG_ARCH_IOP13XX) += pci.o
 obj-$(CONFIG_ARCH_IOP13XX) += io.o
 obj-$(CONFIG_MACH_IQ81340SC) += iq81340sc.o
diff --git a/arch/arm/mach-iop13xx/iq81340mc.c b/arch/arm/mach-iop13xx/iq81340mc.c
index 2a1bbfe9896f..a519d707571c 100644
--- a/arch/arm/mach-iop13xx/iq81340mc.c
+++ b/arch/arm/mach-iop13xx/iq81340mc.c
@@ -25,6 +25,7 @@
 #include <asm/mach/arch.h>
 #include <asm/arch/pci.h>
 #include <asm/mach/time.h>
+#include <asm/arch/time.h>
 
 extern int init_atu; /* Flag to select which ATU(s) to initialize / disable */
 
@@ -78,12 +79,12 @@ static void __init iq81340mc_init(void)
 
 static void __init iq81340mc_timer_init(void)
 {
-        iop13xx_init_time(400000000);
+        iop_init_time(400000000);
 }
 
 static struct sys_timer iq81340mc_timer = {
        .init       = iq81340mc_timer_init,
-       .offset     = iop13xx_gettimeoffset,
+       .offset     = iop_gettimeoffset,
 };
 
 MACHINE_START(IQ81340MC, "Intel IQ81340MC")
diff --git a/arch/arm/mach-iop13xx/iq81340sc.c b/arch/arm/mach-iop13xx/iq81340sc.c
index 5ad2b62c9bfd..0e71fbcabe00 100644
--- a/arch/arm/mach-iop13xx/iq81340sc.c
+++ b/arch/arm/mach-iop13xx/iq81340sc.c
@@ -25,6 +25,7 @@
 #include <asm/mach/arch.h>
 #include <asm/arch/pci.h>
 #include <asm/mach/time.h>
+#include <asm/arch/time.h>
 
 extern int init_atu;
 
@@ -80,12 +81,12 @@ static void __init iq81340sc_init(void)
 
 static void __init iq81340sc_timer_init(void)
 {
-        iop13xx_init_time(400000000);
+        iop_init_time(400000000);
 }
 
 static struct sys_timer iq81340sc_timer = {
        .init       = iq81340sc_timer_init,
-       .offset     = iop13xx_gettimeoffset,
+       .offset     = iop_gettimeoffset,
 };
 
 MACHINE_START(IQ81340SC, "Intel IQ81340SC")
diff --git a/arch/arm/mach-iop13xx/irq.c b/arch/arm/mach-iop13xx/irq.c
index 162b93214965..b2eb0b961031 100644
--- a/arch/arm/mach-iop13xx/irq.c
+++ b/arch/arm/mach-iop13xx/irq.c
@@ -161,65 +161,49 @@ static void write_intsize(u32 val)
 static void
 iop13xx_irq_mask0 (unsigned int irq)
 {
-        u32 cp_flags = iop13xx_cp6_save();
         write_intctl_0(read_intctl_0() & ~(1 << (irq - 0)));
-        iop13xx_cp6_restore(cp_flags);
 }
 
 static void
 iop13xx_irq_mask1 (unsigned int irq)
 {
-        u32 cp_flags = iop13xx_cp6_save();
         write_intctl_1(read_intctl_1() & ~(1 << (irq - 32)));
-        iop13xx_cp6_restore(cp_flags);
 }
 
 static void
 iop13xx_irq_mask2 (unsigned int irq)
 {
-        u32 cp_flags = iop13xx_cp6_save();
         write_intctl_2(read_intctl_2() & ~(1 << (irq - 64)));
-        iop13xx_cp6_restore(cp_flags);
 }
 
 static void
 iop13xx_irq_mask3 (unsigned int irq)
 {
-        u32 cp_flags = iop13xx_cp6_save();
         write_intctl_3(read_intctl_3() & ~(1 << (irq - 96)));
-        iop13xx_cp6_restore(cp_flags);
 }
 
 static void
 iop13xx_irq_unmask0(unsigned int irq)
 {
-        u32 cp_flags = iop13xx_cp6_save();
         write_intctl_0(read_intctl_0() | (1 << (irq - 0)));
-        iop13xx_cp6_restore(cp_flags);
 }
 
 static void
 iop13xx_irq_unmask1(unsigned int irq)
 {
-        u32 cp_flags = iop13xx_cp6_save();
         write_intctl_1(read_intctl_1() | (1 << (irq - 32)));
-        iop13xx_cp6_restore(cp_flags);
 }
 
 static void
 iop13xx_irq_unmask2(unsigned int irq)
 {
-        u32 cp_flags = iop13xx_cp6_save();
         write_intctl_2(read_intctl_2() | (1 << (irq - 64)));
-        iop13xx_cp6_restore(cp_flags);
 }
 
 static void
 iop13xx_irq_unmask3(unsigned int irq)
 {
-        u32 cp_flags = iop13xx_cp6_save();
         write_intctl_3(read_intctl_3() | (1 << (irq - 96)));
-        iop13xx_cp6_restore(cp_flags);
 }
 
 static struct irq_chip iop13xx_irqchip1 = {
@@ -256,7 +240,6 @@ void __init iop13xx_init_irq(void)
 {
         unsigned int i;
 
-        u32 cp_flags = iop13xx_cp6_save();
         iop_init_cp6_handler();
 
         /* disable all interrupts */
@@ -288,6 +271,4 @@ void __init iop13xx_init_irq(void)
                 set_irq_handler(i, handle_level_irq);
                 set_irq_flags(i, IRQF_VALID | IRQF_PROBE);
         }
-
-        iop13xx_cp6_restore(cp_flags);
 }
diff --git a/arch/arm/mach-iop13xx/time.c b/arch/arm/mach-iop13xx/time.c
deleted file mode 100644
index 8b21365f653f..000000000000
--- a/arch/arm/mach-iop13xx/time.c
+++ /dev/null
@@ -1,102 +0,0 @@
-/*
- * arch/arm/mach-iop13xx/time.c
- *
- * Timer code for IOP13xx (copied from IOP32x/IOP33x implementation)
- *
- * Author: Deepak Saxena <dsaxena@mvista.com>
- *
- * Copyright 2002-2003 MontaVista Software Inc.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
- */
-
-#include <linux/kernel.h>
-#include <linux/interrupt.h>
-#include <linux/time.h>
-#include <linux/init.h>
-#include <linux/timex.h>
-#include <asm/io.h>
-#include <asm/irq.h>
-#include <asm/uaccess.h>
-#include <asm/mach/irq.h>
-#include <asm/mach/time.h>
-
-static unsigned long ticks_per_jiffy;
-static unsigned long ticks_per_usec;
-static unsigned long next_jiffy_time;
-
-static inline u32 read_tcr1(void)
-{
-        u32 val;
-        asm volatile("mrc p6, 0, %0, c3, c9, 0" : "=r" (val));
-        return val;
-}
-
-unsigned long iop13xx_gettimeoffset(void)
-{
-        unsigned long offset;
-        u32 cp_flags;
-
-        cp_flags = iop13xx_cp6_save();
-        offset = next_jiffy_time - read_tcr1();
-        iop13xx_cp6_restore(cp_flags);
-
-        return offset / ticks_per_usec;
-}
-
-static irqreturn_t
-iop13xx_timer_interrupt(int irq, void *dev_id)
-{
-        u32 cp_flags = iop13xx_cp6_save();
-
-        write_seqlock(&xtime_lock);
-
-        asm volatile("mcr p6, 0, %0, c6, c9, 0" : : "r" (1));
-
-        while ((signed long)(next_jiffy_time - read_tcr1())
-                                                        >= ticks_per_jiffy) {
-                timer_tick();
-                next_jiffy_time -= ticks_per_jiffy;
-        }
-
-        write_sequnlock(&xtime_lock);
-
-        iop13xx_cp6_restore(cp_flags);
-
-        return IRQ_HANDLED;
-}
-
-static struct irqaction iop13xx_timer_irq = {
-        .name           = "IOP13XX Timer Tick",
-        .handler        = iop13xx_timer_interrupt,
-        .flags          = IRQF_DISABLED | IRQF_TIMER,
-};
-
-void __init iop13xx_init_time(unsigned long tick_rate)
-{
-        u32 timer_ctl;
-        u32 cp_flags;
-
-        ticks_per_jiffy = (tick_rate + HZ/2) / HZ;
-        ticks_per_usec = tick_rate / 1000000;
-        next_jiffy_time = 0xffffffff;
-
-        timer_ctl = IOP13XX_TMR_EN | IOP13XX_TMR_PRIVILEGED |
-                        IOP13XX_TMR_RELOAD | IOP13XX_TMR_RATIO_1_1;
-
-        /*
-         * We use timer 0 for our timer interrupt, and timer 1 as
-         * monotonic counter for tracking missed jiffies.
-         */
-        cp_flags = iop13xx_cp6_save();
-        asm volatile("mcr p6, 0, %0, c4, c9, 0" : : "r" (ticks_per_jiffy - 1));
-        asm volatile("mcr p6, 0, %0, c0, c9, 0" : : "r" (timer_ctl));
-        asm volatile("mcr p6, 0, %0, c5, c9, 0" : : "r" (0xffffffff));
-        asm volatile("mcr p6, 0, %0, c1, c9, 0" : : "r" (timer_ctl));
-        iop13xx_cp6_restore(cp_flags);
-
-        setup_irq(IRQ_IOP13XX_TIMER0, &iop13xx_timer_irq);
-}
diff --git a/arch/arm/mach-iop32x/glantank.c b/arch/arm/mach-iop32x/glantank.c
index b9b765057dbe..45f4f13ae11b 100644
--- a/arch/arm/mach-iop32x/glantank.c
+++ b/arch/arm/mach-iop32x/glantank.c
@@ -31,6 +31,7 @@
 #include <asm/mach/time.h>
 #include <asm/mach-types.h>
 #include <asm/page.h>
+#include <asm/arch/time.h>
 
 /*
  * GLAN Tank timer tick configuration.
@@ -38,12 +39,12 @@
 static void __init glantank_timer_init(void)
 {
         /* 33.333 MHz crystal.  */
-        iop3xx_init_time(200000000);
+        iop_init_time(200000000);
 }
 
 static struct sys_timer glantank_timer = {
         .init           = glantank_timer_init,
-        .offset         = iop3xx_gettimeoffset,
+        .offset         = iop_gettimeoffset,
 };
 
 
diff --git a/arch/arm/mach-iop32x/iq31244.c b/arch/arm/mach-iop32x/iq31244.c
index be4aedfa0de6..571ac35bc2c7 100644
--- a/arch/arm/mach-iop32x/iq31244.c
+++ b/arch/arm/mach-iop32x/iq31244.c
@@ -36,7 +36,7 @@
 #include <asm/mach-types.h>
 #include <asm/page.h>
 #include <asm/pgtable.h>
-
+#include <asm/arch/time.h>
 
 /*
  * The EP80219 and IQ31244 use the same machine ID.  To find out
@@ -56,16 +56,16 @@ static void __init iq31244_timer_init(void)
 {
         if (is_80219()) {
                 /* 33.333 MHz crystal.  */
-                iop3xx_init_time(200000000);
+                iop_init_time(200000000);
         } else {
                 /* 33.000 MHz crystal.  */
-                iop3xx_init_time(198000000);
+                iop_init_time(198000000);
         }
 }
 
 static struct sys_timer iq31244_timer = {
         .init           = iq31244_timer_init,
-        .offset         = iop3xx_gettimeoffset,
+        .offset         = iop_gettimeoffset,
 };
 
 
diff --git a/arch/arm/mach-iop32x/iq80321.c b/arch/arm/mach-iop32x/iq80321.c
index 1f37b5501888..361c70c0f64c 100644
--- a/arch/arm/mach-iop32x/iq80321.c
+++ b/arch/arm/mach-iop32x/iq80321.c
@@ -33,6 +33,7 @@
 #include <asm/mach-types.h>
 #include <asm/page.h>
 #include <asm/pgtable.h>
+#include <asm/arch/time.h>
 
 /*
  * IQ80321 timer tick configuration.
@@ -40,12 +41,12 @@
 static void __init iq80321_timer_init(void)
 {
         /* 33.333 MHz crystal.  */
-        iop3xx_init_time(200000000);
+        iop_init_time(200000000);
 }
 
 static struct sys_timer iq80321_timer = {
         .init           = iq80321_timer_init,
-        .offset         = iop3xx_gettimeoffset,
+        .offset         = iop_gettimeoffset,
 };
 
 
diff --git a/arch/arm/mach-iop32x/irq.c b/arch/arm/mach-iop32x/irq.c
index 8b0ac5590ae4..82598dc18d80 100644
--- a/arch/arm/mach-iop32x/irq.c
+++ b/arch/arm/mach-iop32x/irq.c
@@ -23,16 +23,12 @@ static u32 iop32x_mask;
 
 static inline void intctl_write(u32 val)
 {
-        iop3xx_cp6_enable();
         asm volatile("mcr p6, 0, %0, c0, c0, 0" : : "r" (val));
-        iop3xx_cp6_disable();
 }
 
 static inline void intstr_write(u32 val)
 {
-        iop3xx_cp6_enable();
         asm volatile("mcr p6, 0, %0, c4, c0, 0" : : "r" (val));
-        iop3xx_cp6_disable();
 }
 
 static void
diff --git a/arch/arm/mach-iop32x/n2100.c b/arch/arm/mach-iop32x/n2100.c
index 966aa51aee09..5f07344d96f3 100644
--- a/arch/arm/mach-iop32x/n2100.c
+++ b/arch/arm/mach-iop32x/n2100.c
@@ -37,6 +37,7 @@
 #include <asm/mach-types.h>
 #include <asm/page.h>
 #include <asm/pgtable.h>
+#include <asm/arch/time.h>
 
 /*
  * N2100 timer tick configuration.
@@ -44,12 +45,12 @@
 static void __init n2100_timer_init(void)
 {
         /* 33.000 MHz crystal.  */
-        iop3xx_init_time(198000000);
+        iop_init_time(198000000);
 }
 
 static struct sys_timer n2100_timer = {
         .init           = n2100_timer_init,
-        .offset         = iop3xx_gettimeoffset,
+        .offset         = iop_gettimeoffset,
 };
 
 
diff --git a/arch/arm/mach-iop33x/iq80331.c b/arch/arm/mach-iop33x/iq80331.c
index 97a7b7488264..1a9e36138d80 100644
--- a/arch/arm/mach-iop33x/iq80331.c
+++ b/arch/arm/mach-iop33x/iq80331.c
@@ -32,6 +32,7 @@
 #include <asm/mach-types.h>
 #include <asm/page.h>
 #include <asm/pgtable.h>
+#include <asm/arch/time.h>
 
 /*
  * IQ80331 timer tick configuration.
@@ -40,14 +41,14 @@ static void __init iq80331_timer_init(void)
 {
         /* D-Step parts run at a higher internal bus frequency */
         if (*IOP3XX_ATURID >= 0xa)
-                iop3xx_init_time(333000000);
+                iop_init_time(333000000);
         else
-                iop3xx_init_time(266000000);
+                iop_init_time(266000000);
 }
 
 static struct sys_timer iq80331_timer = {
         .init           = iq80331_timer_init,
-        .offset         = iop3xx_gettimeoffset,
+        .offset         = iop_gettimeoffset,
 };
 
 
diff --git a/arch/arm/mach-iop33x/iq80332.c b/arch/arm/mach-iop33x/iq80332.c
index 9887bfc1c078..96d6f0f3cd21 100644
--- a/arch/arm/mach-iop33x/iq80332.c
+++ b/arch/arm/mach-iop33x/iq80332.c
@@ -32,6 +32,7 @@
 #include <asm/mach-types.h>
 #include <asm/page.h>
 #include <asm/pgtable.h>
+#include <asm/arch/time.h>
 
 /*
  * IQ80332 timer tick configuration.
@@ -40,14 +41,14 @@ static void __init iq80332_timer_init(void)
 {
         /* D-Step parts and the iop333 run at a higher internal bus frequency */
         if (*IOP3XX_ATURID >= 0xa || *IOP3XX_ATUDID == 0x374)
-                iop3xx_init_time(333000000);
+                iop_init_time(333000000);
         else
-                iop3xx_init_time(266000000);
+                iop_init_time(266000000);
 }
 
 static struct sys_timer iq80332_timer = {
         .init           = iq80332_timer_init,
-        .offset         = iop3xx_gettimeoffset,
+        .offset         = iop_gettimeoffset,
 };
 
 
diff --git a/arch/arm/mach-iop33x/irq.c b/arch/arm/mach-iop33x/irq.c
index effbe6b782d0..c65ea78a2427 100644
--- a/arch/arm/mach-iop33x/irq.c
+++ b/arch/arm/mach-iop33x/irq.c
@@ -24,44 +24,32 @@ static u32 iop33x_mask1;
 
 static inline void intctl0_write(u32 val)
 {
-        iop3xx_cp6_enable();
         asm volatile("mcr p6, 0, %0, c0, c0, 0" : : "r" (val));
-        iop3xx_cp6_disable();
 }
 
 static inline void intctl1_write(u32 val)
 {
-        iop3xx_cp6_enable();
         asm volatile("mcr p6, 0, %0, c1, c0, 0" : : "r" (val));
-        iop3xx_cp6_disable();
 }
 
 static inline void intstr0_write(u32 val)
 {
-        iop3xx_cp6_enable();
         asm volatile("mcr p6, 0, %0, c2, c0, 0" : : "r" (val));
-        iop3xx_cp6_disable();
 }
 
 static inline void intstr1_write(u32 val)
 {
-        iop3xx_cp6_enable();
         asm volatile("mcr p6, 0, %0, c3, c0, 0" : : "r" (val));
-        iop3xx_cp6_disable();
 }
 
 static inline void intbase_write(u32 val)
 {
-        iop3xx_cp6_enable();
         asm volatile("mcr p6, 0, %0, c12, c0, 0" : : "r" (val));
-        iop3xx_cp6_disable();
 }
 
 static inline void intsize_write(u32 val)
 {
-        iop3xx_cp6_enable();
         asm volatile("mcr p6, 0, %0, c13, c0, 0" : : "r" (val));
-        iop3xx_cp6_disable();
 }
 
 static void
diff --git a/arch/arm/plat-iop/Makefile b/arch/arm/plat-iop/Makefile
index 3250d732a171..4d2b1da3cd82 100644
--- a/arch/arm/plat-iop/Makefile
+++ b/arch/arm/plat-iop/Makefile
@@ -24,6 +24,7 @@ obj-$(CONFIG_ARCH_IOP33X) += cp6.o
 
 # IOP13XX
 obj-$(CONFIG_ARCH_IOP13XX) += cp6.o
+obj-$(CONFIG_ARCH_IOP13XX) += time.o
 
 obj-m                  :=
 obj-n                  :=
diff --git a/arch/arm/plat-iop/time.c b/arch/arm/plat-iop/time.c
index f530abdaa7a1..16300adfb4de 100644
--- a/arch/arm/plat-iop/time.c
+++ b/arch/arm/plat-iop/time.c
@@ -24,39 +24,45 @@
 #include <asm/uaccess.h>
 #include <asm/mach/irq.h>
 #include <asm/mach/time.h>
-
-#ifdef CONFIG_ARCH_IOP32X
-#define IRQ_IOP3XX_TIMER0       IRQ_IOP32X_TIMER0
-#else
-#ifdef CONFIG_ARCH_IOP33X
-#define IRQ_IOP3XX_TIMER0       IRQ_IOP33X_TIMER0
-#endif
-#endif
+#include <asm/arch/time.h>
 
 static unsigned long ticks_per_jiffy;
 static unsigned long ticks_per_usec;
 static unsigned long next_jiffy_time;
 
-unsigned long iop3xx_gettimeoffset(void)
+unsigned long iop_gettimeoffset(void)
 {
-        unsigned long offset;
+        unsigned long offset, temp1, temp2;
 
-        offset = next_jiffy_time - *IOP3XX_TU_TCR1;
+        /* enable cp6, if necessary, to avoid taking the overhead of an
+         * undefined instruction trap
+         */
+        asm volatile (
+        "mrc    p15, 0, %0, c15, c1, 0\n\t"
+        "ands   %1, %0, #(1 << 6)\n\t"
+        "orreq  %0, %0, #(1 << 6)\n\t"
+        "mcreq  p15, 0, %0, c15, c1, 0\n\t"
+#ifdef CONFIG_XSCALE
+        "mrceq  p15, 0, %0, c15, c1, 0\n\t"
+        "moveq  %0, %0\n\t"
+        "subeq  pc, pc, #4\n\t"
+#endif
+        : "=r"(temp1), "=r"(temp2) : : "cc");
+
+        offset = next_jiffy_time - read_tcr1();
 
         return offset / ticks_per_usec;
 }
 
 static irqreturn_t
-iop3xx_timer_interrupt(int irq, void *dev_id)
+iop_timer_interrupt(int irq, void *dev_id)
 {
         write_seqlock(&xtime_lock);
 
-        iop3xx_cp6_enable();
-        asm volatile("mcr p6, 0, %0, c6, c1, 0" : : "r" (1));
-        iop3xx_cp6_disable();
+        write_tisr(1);
 
-        while ((signed long)(next_jiffy_time - *IOP3XX_TU_TCR1)
-                                                        >= ticks_per_jiffy) {
+        while ((signed long)(next_jiffy_time - read_tcr1())
+                >= ticks_per_jiffy) {
                 timer_tick();
                 next_jiffy_time -= ticks_per_jiffy;
         }
@@ -66,13 +72,13 @@ iop3xx_timer_interrupt(int irq, void *dev_id)
         return IRQ_HANDLED;
 }
 
-static struct irqaction iop3xx_timer_irq = {
-        .name           = "IOP3XX Timer Tick",
-        .handler        = iop3xx_timer_interrupt,
+static struct irqaction iop_timer_irq = {
+        .name           = "IOP Timer Tick",
+        .handler        = iop_timer_interrupt,
         .flags          = IRQF_DISABLED | IRQF_TIMER,
 };
 
-void __init iop3xx_init_time(unsigned long tick_rate)
+void __init iop_init_time(unsigned long tick_rate)
 {
         u32 timer_ctl;
 
@@ -80,19 +86,17 @@ void __init iop3xx_init_time(unsigned long tick_rate)
         ticks_per_usec = tick_rate / 1000000;
         next_jiffy_time = 0xffffffff;
 
-        timer_ctl = IOP3XX_TMR_EN | IOP3XX_TMR_PRIVILEGED |
-                        IOP3XX_TMR_RELOAD | IOP3XX_TMR_RATIO_1_1;
+        timer_ctl = IOP_TMR_EN | IOP_TMR_PRIVILEGED |
+                        IOP_TMR_RELOAD | IOP_TMR_RATIO_1_1;
 
         /*
          * We use timer 0 for our timer interrupt, and timer 1 as
          * monotonic counter for tracking missed jiffies.
          */
-        iop3xx_cp6_enable();
-        asm volatile("mcr p6, 0, %0, c4, c1, 0" : : "r" (ticks_per_jiffy - 1));
-        asm volatile("mcr p6, 0, %0, c0, c1, 0" : : "r" (timer_ctl));
-        asm volatile("mcr p6, 0, %0, c5, c1, 0" : : "r" (0xffffffff));
-        asm volatile("mcr p6, 0, %0, c1, c1, 0" : : "r" (timer_ctl));
-        iop3xx_cp6_disable();
-
-        setup_irq(IRQ_IOP3XX_TIMER0, &iop3xx_timer_irq);
+        write_trr0(ticks_per_jiffy - 1);
+        write_tmr0(timer_ctl);
+        write_trr1(0xffffffff);
+        write_tmr1(timer_ctl);
+
+        setup_irq(IRQ_IOP_TIMER0, &iop_timer_irq);
 }
diff --git a/include/asm-arm/arch-aaec2000/entry-macro.S b/include/asm-arm/arch-aaec2000/entry-macro.S
index 1eb3503bd16e..83fdf68f6b7c 100644
--- a/include/asm-arm/arch-aaec2000/entry-macro.S
+++ b/include/asm-arm/arch-aaec2000/entry-macro.S
@@ -15,6 +15,12 @@
                 .macro  disable_fiq
                 .endm
 
+                .macro  get_irqnr_preamble, base, tmp
+                .endm
+
+                .macro  arch_ret_to_user, tmp1, tmp2
+                .endm
+
                 .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
                 mov     r4, #0xf8000000
                 add     r4, r4, #0x00000500
diff --git a/include/asm-arm/arch-at91/entry-macro.S b/include/asm-arm/arch-at91/entry-macro.S
index 76c8cccf73aa..cc1d850a0788 100644
--- a/include/asm-arm/arch-at91/entry-macro.S
+++ b/include/asm-arm/arch-at91/entry-macro.S
@@ -16,6 +16,12 @@
         .macro  disable_fiq
         .endm
 
+        .macro  get_irqnr_preamble, base, tmp
+        .endm
+
+        .macro  arch_ret_to_user, tmp1, tmp2
+        .endm
+
         .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
         ldr     \base, =(AT91_VA_BASE_SYS + AT91_AIC)           @ base virtual address of AIC peripheral
         ldr     \irqnr, [\base, #(AT91_AIC_IVR - AT91_AIC)]     @ read IRQ vector register: de-asserts nIRQ to processor (and clears interrupt)
diff --git a/include/asm-arm/arch-at91rm9200/entry-macro.S b/include/asm-arm/arch-at91rm9200/entry-macro.S
new file mode 100644
index 000000000000..0e0aadf2a175
--- /dev/null
+++ b/include/asm-arm/arch-at91rm9200/entry-macro.S
@@ -0,0 +1,32 @@
+/*
+ * include/asm-arm/arch-at91rm9200/entry-macro.S
+ *
+ *  Copyright (C) 2003-2005 SAN People
+ *
+ * Low-level IRQ helper macros for AT91RM9200 platforms
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <asm/hardware.h>
+#include <asm/arch/at91_aic.h>
+
+        .macro  disable_fiq
+        .endm
+
+        .macro  get_irqnr_preamble, base, tmp
+        .endm
+
+        .macro  arch_ret_to_user, tmp1, tmp2
+        .endm
+
+        .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
+        ldr     \base, =(AT91_VA_BASE_SYS)              @ base virtual address of SYS peripherals
+        ldr     \irqnr, [\base, #AT91_AIC_IVR]          @ read IRQ vector register: de-asserts nIRQ to processor (and clears interrupt)
+        ldr     \irqstat, [\base, #AT91_AIC_ISR]        @ read interrupt source number
+        teq     \irqstat, #0                            @ ISR is 0 when no current interrupt, or spurious interrupt
+        streq   \tmp, [\base, #AT91_AIC_EOICR]          @ not going to be handled further, then ACK it now.
+        .endm
+
diff --git a/include/asm-arm/arch-cl7500/entry-macro.S b/include/asm-arm/arch-cl7500/entry-macro.S
index c9e5395e5106..0cfb89b229d1 100644
--- a/include/asm-arm/arch-cl7500/entry-macro.S
+++ b/include/asm-arm/arch-cl7500/entry-macro.S
@@ -1,3 +1,8 @@
 #include <asm/hardware.h>
 #include <asm/hardware/entry-macro-iomd.S>
+        .macro  get_irqnr_preamble, base, tmp
+        .endm
+
+        .macro  arch_ret_to_user, tmp1, tmp2
+        .endm
 
diff --git a/include/asm-arm/arch-clps711x/entry-macro.S b/include/asm-arm/arch-clps711x/entry-macro.S
index de4481dd8ba0..cd8c5a0bc7bc 100644
--- a/include/asm-arm/arch-clps711x/entry-macro.S
+++ b/include/asm-arm/arch-clps711x/entry-macro.S
@@ -13,6 +13,12 @@
                 .macro  disable_fiq
                 .endm
 
+                .macro  get_irqnr_preamble, base, tmp
+                .endm
+
+                .macro  arch_ret_to_user, tmp1, tmp2
+                .endm
+
 #if (INTSR2 - INTSR1) != (INTMR2 - INTMR1)
 #error INTSR stride != INTMR stride
 #endif
diff --git a/include/asm-arm/arch-ebsa110/entry-macro.S b/include/asm-arm/arch-ebsa110/entry-macro.S
index b12ca04f998c..aa23c5d6c69e 100644
--- a/include/asm-arm/arch-ebsa110/entry-macro.S
+++ b/include/asm-arm/arch-ebsa110/entry-macro.S
@@ -15,6 +15,12 @@
         .macro  disable_fiq
         .endm
 
+        .macro  get_irqnr_preamble, base, tmp
+        .endm
+
+        .macro  arch_ret_to_user, tmp1, tmp2
+        .endm
+
         .macro  get_irqnr_and_base, irqnr, stat, base, tmp
         mov     \base, #IRQ_STAT
         ldrb    \stat, [\base]                  @ get interrupts
diff --git a/include/asm-arm/arch-ebsa285/entry-macro.S b/include/asm-arm/arch-ebsa285/entry-macro.S
index ce812d4f4a33..4203dbf10662 100644
--- a/include/asm-arm/arch-ebsa285/entry-macro.S
+++ b/include/asm-arm/arch-ebsa285/entry-macro.S
@@ -14,6 +14,12 @@
                 .macro  disable_fiq
                 .endm
 
+                .macro  get_irqnr_preamble, base, tmp
+                .endm
+
+                .macro  arch_ret_to_user, tmp1, tmp2
+                .endm
+
                 .equ    dc21285_high, ARMCSR_BASE & 0xff000000
                 .equ    dc21285_low, ARMCSR_BASE & 0x00ffffff
 
diff --git a/include/asm-arm/arch-ep93xx/entry-macro.S b/include/asm-arm/arch-ep93xx/entry-macro.S
index 84140a28dfcf..241ec221a047 100644
--- a/include/asm-arm/arch-ep93xx/entry-macro.S
+++ b/include/asm-arm/arch-ep93xx/entry-macro.S
@@ -14,6 +14,12 @@
                 .macro  disable_fiq
                 .endm
 
+                .macro  get_irqnr_preamble, base, tmp
+                .endm
+
+                .macro  arch_ret_to_user, tmp1, tmp2
+                .endm
+
                 .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
                 ldr     \base, =(EP93XX_AHB_VIRT_BASE)
                 orr     \base, \base, #0x000b0000
diff --git a/include/asm-arm/arch-h720x/entry-macro.S b/include/asm-arm/arch-h720x/entry-macro.S
index 8f165648e2af..38dd63ae104e 100644
--- a/include/asm-arm/arch-h720x/entry-macro.S
+++ b/include/asm-arm/arch-h720x/entry-macro.S
@@ -11,6 +11,12 @@
                 .macro  disable_fiq
                 .endm
 
+                .macro  get_irqnr_preamble, base, tmp
+                .endm
+
+                .macro  arch_ret_to_user, tmp1, tmp2
+                .endm
+
                 .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
 #if defined (CONFIG_CPU_H7201) || defined (CONFIG_CPU_H7202)
                 @ we could use the id register on H7202, but this is not
diff --git a/include/asm-arm/arch-imx/entry-macro.S b/include/asm-arm/arch-imx/entry-macro.S
index 61bb0bdc1b16..0b84e81031c3 100644
--- a/include/asm-arm/arch-imx/entry-macro.S
+++ b/include/asm-arm/arch-imx/entry-macro.S
@@ -11,6 +11,13 @@
 
                 .macro  disable_fiq
                 .endm
+
+                .macro  get_irqnr_preamble, base, tmp
+                .endm
+
+                .macro  arch_ret_to_user, tmp1, tmp2
+                .endm
+
 #define AITC_NIVECSR   0x40
                 .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
                 ldr     \base, =IO_ADDRESS(IMX_AITC_BASE)
diff --git a/include/asm-arm/arch-integrator/entry-macro.S b/include/asm-arm/arch-integrator/entry-macro.S
index 69838d04f90b..491af1a23de5 100644
--- a/include/asm-arm/arch-integrator/entry-macro.S
+++ b/include/asm-arm/arch-integrator/entry-macro.S
@@ -13,6 +13,12 @@
                 .macro  disable_fiq
                 .endm
 
+                .macro  get_irqnr_preamble, base, tmp
+                .endm
+
+                .macro  arch_ret_to_user, tmp1, tmp2
+                .endm
+
                 .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
 /* FIXME: should not be using soo many LDRs here */
                 ldr     \base, =IO_ADDRESS(INTEGRATOR_IC_BASE)
diff --git a/include/asm-arm/arch-iop13xx/entry-macro.S b/include/asm-arm/arch-iop13xx/entry-macro.S
index 94c50283dc56..a624a7870c64 100644
--- a/include/asm-arm/arch-iop13xx/entry-macro.S
+++ b/include/asm-arm/arch-iop13xx/entry-macro.S
@@ -19,21 +19,27 @@
         .macro  disable_fiq
         .endm
 
+        .macro get_irqnr_preamble, base, tmp
+        mrc     p15, 0, \tmp, c15, c1, 0
+        orr     \tmp, \tmp, #(1 << 6)
+        mcr     p15, 0, \tmp, c15, c1, 0        @ Enable cp6 access
+        .endm
+
         /*
          * Note: a 1-cycle window exists where iintvec will return the value
          * of iintbase, so we explicitly check for "bad zeros"
          */
         .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
-        mrc     p15, 0, \tmp, c15, c1, 0
-        orr     \tmp, \tmp, #(1 << 6)
-        mcr     p15, 0, \tmp, c15, c1, 0        @ Enable cp6 access
-
         mrc     p6, 0, \irqnr, c3, c2, 0        @ Read IINTVEC
         cmp     \irqnr, #0
         mrceq   p6, 0, \irqnr, c3, c2, 0        @ Re-read on potentially bad zero
         adds    \irqstat, \irqnr, #1            @ Check for 0xffffffff
         movne   \irqnr, \irqnr, lsr #2          @ Convert to irqnr
+        .endm
 
-        biceq   \tmp, \tmp, #(1 << 6)
-        mcreq   p15, 0, \tmp, c15, c1, 0        @ Disable cp6 access if no more interrupts
+        .macro arch_ret_to_user, tmp1, tmp2
+        mrc     p15, 0, \tmp1, c15, c1, 0
+        ands    \tmp2, \tmp1, #(1 << 6)
+        bicne   \tmp1, \tmp1, #(1 << 6)
+        mcrne   p15, 0, \tmp1, c15, c1, 0       @ Disable cp6 access
         .endm
diff --git a/include/asm-arm/arch-iop13xx/iop13xx.h b/include/asm-arm/arch-iop13xx/iop13xx.h
index a88522a0ff8e..d26b755a9879 100644
--- a/include/asm-arm/arch-iop13xx/iop13xx.h
+++ b/include/asm-arm/arch-iop13xx/iop13xx.h
@@ -9,34 +9,6 @@ void iop13xx_init_irq(void);
 void iop13xx_map_io(void);
 void iop13xx_platform_init(void);
 void iop13xx_init_irq(void);
-void iop13xx_init_time(unsigned long tickrate);
-unsigned long iop13xx_gettimeoffset(void);
-
-/* handle cp6 access
- * to do: handle access in entry-armv5.S and unify with
- * the iop3xx implementation
- * note: use iop13xx_cp6_enable_irq_save and iop13xx_cp6_irq_restore (irq.h)
- * when interrupts are enabled
- */
-static inline unsigned long iop13xx_cp6_save(void)
-{
-        u32 temp, cp_flags;
-
-        asm volatile (
-                "mrc    p15, 0, %1, c15, c1, 0\n\t"
-                "orr    %0, %1, #(1 << 6)\n\t"
-                "mcr    p15, 0, %0, c15, c1, 0\n\t"
-                : "=r" (temp), "=r"(cp_flags));
-
-        return cp_flags;
-}
-
-static inline void iop13xx_cp6_restore(unsigned long cp_flags)
-{
-        asm volatile (
-                "mcr    p15, 0, %0, c15, c1, 0\n\t"
-                : : "r" (cp_flags) );
-}
 
 /* CPUID CP6 R0 Page 0 */
 static inline int iop13xx_cpu_id(void)
@@ -479,14 +451,4 @@ static inline int iop13xx_cpu_id(void)
 #define IOP13XX_PBI_BAR1                IOP13XX_PBI_OFFSET(0x10)
 #define IOP13XX_PBI_LR1                 IOP13XX_PBI_OFFSET(0x14)
 
-#define IOP13XX_TMR_TC                  0x01
-#define IOP13XX_TMR_EN                  0x02
-#define IOP13XX_TMR_RELOAD              0x04
-#define IOP13XX_TMR_PRIVILEGED          0x08
-
-#define IOP13XX_TMR_RATIO_1_1           0x00
-#define IOP13XX_TMR_RATIO_4_1           0x10
-#define IOP13XX_TMR_RATIO_8_1           0x20
-#define IOP13XX_TMR_RATIO_16_1          0x30
-
 #endif /* _IOP13XX_HW_H_ */
diff --git a/include/asm-arm/arch-iop13xx/irqs.h b/include/asm-arm/arch-iop13xx/irqs.h
index 442e35a40359..5c6fac2a4004 100644
--- a/include/asm-arm/arch-iop13xx/irqs.h
+++ b/include/asm-arm/arch-iop13xx/irqs.h
@@ -3,8 +3,6 @@
 
 #ifndef __ASSEMBLER__
 #include <linux/types.h>
-#include <asm/system.h> /* local_irq_save */
-#include <asm/arch/iop13xx.h> /* iop13xx_cp6_* */
 
 /* INTPND0 CP6 R0 Page 3
  */
@@ -41,21 +39,6 @@ static inline u32 read_intpnd_3(void)
         asm volatile("mrc p6, 0, %0, c3, c3, 0":"=r" (val));
         return val;
 }
-
-static inline void
-iop13xx_cp6_enable_irq_save(unsigned long *cp_flags, unsigned long *irq_flags)
-{
-        local_irq_save(*irq_flags);
-        *cp_flags = iop13xx_cp6_save();
-}
-
-static inline void
-iop13xx_cp6_irq_restore(unsigned long *cp_flags,
-        unsigned long *irq_flags)
-{
-        iop13xx_cp6_restore(*cp_flags);
-        local_irq_restore(*irq_flags);
-}
 #endif
 
 #define INTBASE 0
diff --git a/include/asm-arm/arch-iop13xx/system.h b/include/asm-arm/arch-iop13xx/system.h
index ee3a62530af2..127827058e1f 100644
--- a/include/asm-arm/arch-iop13xx/system.h
+++ b/include/asm-arm/arch-iop13xx/system.h
@@ -48,12 +48,10 @@ static inline void arch_reset(char mode)
         /*
          * Reset the internal bus (warning both cores are reset)
          */
-        u32 cp_flags = iop13xx_cp6_save();
         write_wdtcr(IOP13XX_WDTCR_EN_ARM);
         write_wdtcr(IOP13XX_WDTCR_EN);
         write_wdtsr(IOP13XX_WDTSR_WRITE_EN | IOP13XX_WDTCR_IB_RESET);
         write_wdtcr(0x1000);
-        iop13xx_cp6_restore(cp_flags);
 
         for(;;);
 }
diff --git a/include/asm-arm/arch-iop13xx/time.h b/include/asm-arm/arch-iop13xx/time.h
new file mode 100644
index 000000000000..77a837a02dec
--- /dev/null
+++ b/include/asm-arm/arch-iop13xx/time.h
@@ -0,0 +1,51 @@
+#ifndef _IOP13XX_TIME_H_
+#define _IOP13XX_TIME_H_
+#define IRQ_IOP_TIMER0 IRQ_IOP13XX_TIMER0
+
+#define IOP_TMR_EN          0x02
+#define IOP_TMR_RELOAD      0x04
+#define IOP_TMR_PRIVILEGED 0x08
+#define IOP_TMR_RATIO_1_1  0x00
+
+void iop_init_time(unsigned long tickrate);
+unsigned long iop_gettimeoffset(void);
+
+static inline void write_tmr0(u32 val)
+{
+        asm volatile("mcr p6, 0, %0, c0, c9, 0" : : "r" (val));
+}
+
+static inline void write_tmr1(u32 val)
+{
+        asm volatile("mcr p6, 0, %0, c1, c9, 0" : : "r" (val));
+}
+
+static inline u32 read_tcr0(void)
+{
+        u32 val;
+        asm volatile("mrc p6, 0, %0, c2, c9, 0" : "=r" (val));
+        return val;
+}
+
+static inline u32 read_tcr1(void)
+{
+        u32 val;
+        asm volatile("mrc p6, 0, %0, c3, c9, 0" : "=r" (val));
+        return val;
+}
+
+static inline void write_trr0(u32 val)
+{
+        asm volatile("mcr p6, 0, %0, c4, c9, 0" : : "r" (val));
+}
+
+static inline void write_trr1(u32 val)
+{
+        asm volatile("mcr p6, 0, %0, c5, c9, 0" : : "r" (val));
+}
+
+static inline void write_tisr(u32 val)
+{
+        asm volatile("mcr p6, 0, %0, c6, c9, 0" : : "r" (val));
+}
+#endif
diff --git a/include/asm-arm/arch-iop32x/entry-macro.S b/include/asm-arm/arch-iop32x/entry-macro.S
index 1500cbbd2295..207db99dfbd2 100644
--- a/include/asm-arm/arch-iop32x/entry-macro.S
+++ b/include/asm-arm/arch-iop32x/entry-macro.S
@@ -9,13 +9,28 @@
  */
 #include <asm/arch/iop32x.h>
 
-                .macro  disable_fiq
-                .endm
+        .macro  disable_fiq
+        .endm
 
-                .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
-                ldr     \base, =IOP3XX_REG_ADDR(0x07D8)
-                ldr     \irqstat, [\base]               @ Read IINTSRC
-                cmp     \irqstat, #0
-                clzne   \irqnr, \irqstat
-                rsbne   \irqnr, \irqnr, #31
-                .endm
+        .macro get_irqnr_preamble, base, tmp
+        mrc     p15, 0, \tmp, c15, c1, 0
+        orr     \tmp, \tmp, #(1 << 6)
+        mcr     p15, 0, \tmp, c15, c1, 0        @ Enable cp6 access
+        mrc     p15, 0, \tmp, c15, c1, 0
+        mov     \tmp, \tmp
+        sub     pc, pc, #4                      @ cp_wait
+        .endm
+
+        .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
+        mrc     p6, 0, \irqstat, c8, c0, 0      @ Read IINTSRC
+        cmp     \irqstat, #0
+        clzne   \irqnr, \irqstat
+        rsbne   \irqnr, \irqnr, #31
+        .endm
+
+        .macro arch_ret_to_user, tmp1, tmp2
+        mrc     p15, 0, \tmp1, c15, c1, 0
+        ands    \tmp2, \tmp1, #(1 << 6)
+        bicne   \tmp1, \tmp1, #(1 << 6)
+        mcrne   p15, 0, \tmp1, c15, c1, 0       @ Disable cp6 access
+        .endm
diff --git a/include/asm-arm/arch-iop32x/time.h b/include/asm-arm/arch-iop32x/time.h
new file mode 100644
index 000000000000..0f28c9949623
--- /dev/null
+++ b/include/asm-arm/arch-iop32x/time.h
@@ -0,0 +1,4 @@
+#ifndef _IOP32X_TIME_H_
+#define _IOP32X_TIME_H_
+#define IRQ_IOP_TIMER0 IRQ_IOP32X_TIMER0
+#endif
diff --git a/include/asm-arm/arch-iop33x/entry-macro.S b/include/asm-arm/arch-iop33x/entry-macro.S
index 92b791702e34..b8e3d449e882 100644
--- a/include/asm-arm/arch-iop33x/entry-macro.S
+++ b/include/asm-arm/arch-iop33x/entry-macro.S
@@ -9,14 +9,29 @@
  */
 #include <asm/arch/iop33x.h>
 
-                .macro  disable_fiq
-                .endm
+        .macro  disable_fiq
+        .endm
 
-                .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
-                ldr     \base, =IOP3XX_REG_ADDR(0x07C8)
-                ldr     \irqstat, [\base]               @ Read IINTVEC
-                cmp     \irqstat, #0
-                ldreq   \irqstat, [\base]               @ erratum 63 workaround
-                adds    \irqnr, \irqstat, #1
-                movne   \irqnr, \irqstat, lsr #2
-                .endm
+        .macro get_irqnr_preamble, base, tmp
+        mrc     p15, 0, \tmp, c15, c1, 0
+        orr     \tmp, \tmp, #(1 << 6)
+        mcr     p15, 0, \tmp, c15, c1, 0        @ Enable cp6 access
+        mrc     p15, 0, \tmp, c15, c1, 0
+        mov     \tmp, \tmp
+        sub     pc, pc, #4                      @ cp_wait
+        .endm
+
+        .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
+        mrc     p6, 0, \irqstat, c14, c0, 0     @ Read IINTVEC
+        cmp     \irqstat, #0
+        mrceq   p6, 0, \irqstat, c14, c0, 0     @ erratum 63 workaround
+        adds    \irqnr, \irqstat, #1
+        movne   \irqnr, \irqstat, lsr #2
+        .endm
+
+        .macro arch_ret_to_user, tmp1, tmp2
+        mrc     p15, 0, \tmp1, c15, c1, 0
+        ands    \tmp2, \tmp1, #(1 << 6)
+        bicne   \tmp1, \tmp1, #(1 << 6)
+        mcrne   p15, 0, \tmp1, c15, c1, 0       @ Disable cp6 access
+        .endm
diff --git a/include/asm-arm/arch-iop33x/time.h b/include/asm-arm/arch-iop33x/time.h
new file mode 100644
index 000000000000..4ac4d7664f85
--- /dev/null
+++ b/include/asm-arm/arch-iop33x/time.h
@@ -0,0 +1,4 @@
+#ifndef _IOP33X_TIME_H_
+#define _IOP33X_TIME_H_
+#define IRQ_IOP_TIMER0 IRQ_IOP33X_TIMER0
+#endif
diff --git a/include/asm-arm/arch-ixp2000/entry-macro.S b/include/asm-arm/arch-ixp2000/entry-macro.S
index 16e1e6124b31..11d512ad5945 100644
--- a/include/asm-arm/arch-ixp2000/entry-macro.S
+++ b/include/asm-arm/arch-ixp2000/entry-macro.S
@@ -12,6 +12,12 @@
                 .macro  disable_fiq
                 .endm
 
+                .macro  get_irqnr_preamble, base, tmp
+                .endm
+
+                .macro  arch_ret_to_user, tmp1, tmp2
+                .endm
+
                 .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
 
                 mov     \irqnr, #0x0              @clear out irqnr as default
diff --git a/include/asm-arm/arch-ixp23xx/entry-macro.S b/include/asm-arm/arch-ixp23xx/entry-macro.S
index 867761677b57..ec9dd6fc2d0f 100644
--- a/include/asm-arm/arch-ixp23xx/entry-macro.S
+++ b/include/asm-arm/arch-ixp23xx/entry-macro.S
@@ -5,6 +5,12 @@
                 .macro  disable_fiq
                 .endm
 
+                .macro  get_irqnr_preamble, base, tmp
+                .endm
+
+                .macro  arch_ret_to_user, tmp1, tmp2
+                .endm
+
                 .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
                 ldr     \irqnr, =(IXP23XX_INTC_VIRT + IXP23XX_INTR_IRQ_ENC_ST_OFFSET)
                 ldr     \irqnr, [\irqnr]        @ get interrupt number
diff --git a/include/asm-arm/arch-ixp4xx/entry-macro.S b/include/asm-arm/arch-ixp4xx/entry-macro.S
index 27e124132e4c..dadb568b7ef0 100644
--- a/include/asm-arm/arch-ixp4xx/entry-macro.S
+++ b/include/asm-arm/arch-ixp4xx/entry-macro.S
@@ -12,6 +12,12 @@
                 .macro  disable_fiq
                 .endm
 
+                .macro  get_irqnr_preamble, base, tmp
+                .endm
+
+                .macro  arch_ret_to_user, tmp1, tmp2
+                .endm
+
                 .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
                 ldr     \irqstat, =(IXP4XX_INTC_BASE_VIRT+IXP4XX_ICIP_OFFSET)
                 ldr     \irqstat, [\irqstat]            @ get interrupts
diff --git a/include/asm-arm/arch-l7200/entry-macro.S b/include/asm-arm/arch-l7200/entry-macro.S
index 8b6342dc4be2..63411d3e9df4 100644
--- a/include/asm-arm/arch-l7200/entry-macro.S
+++ b/include/asm-arm/arch-l7200/entry-macro.S
@@ -14,6 +14,12 @@
                 .macro  disable_fiq
                 .endm
 
+                .macro  get_irqnr_preamble, base, tmp
+                .endm
+
+                .macro  arch_ret_to_user, tmp1, tmp2
+                .endm
+
                 .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
                 mov     \irqstat, #irq_base_addr                @ Virt addr IRQ regs
                 add     \irqstat, \irqstat, #0x00001000         @ Status reg
diff --git a/include/asm-arm/arch-lh7a40x/entry-macro.S b/include/asm-arm/arch-lh7a40x/entry-macro.S
index 9fc7f4988124..502700604e00 100644
--- a/include/asm-arm/arch-lh7a40x/entry-macro.S
+++ b/include/asm-arm/arch-lh7a40x/entry-macro.S
@@ -26,6 +26,12 @@
                 .macro  disable_fiq
                 .endm
 
+                .macro  get_irqnr_preamble, base, tmp
+                .endm
+
+                .macro  arch_ret_to_user, tmp1, tmp2
+                .endm
+
                 .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
 
 branch_irq_lh7a400: b 1000f
diff --git a/include/asm-arm/arch-netx/entry-macro.S b/include/asm-arm/arch-netx/entry-macro.S
index 658df4d60ff3..83ad188a0847 100644
--- a/include/asm-arm/arch-netx/entry-macro.S
+++ b/include/asm-arm/arch-netx/entry-macro.S
@@ -23,6 +23,12 @@
                 .macro  disable_fiq
                 .endm
 
+                .macro  get_irqnr_preamble, base, tmp
+                .endm
+
+                .macro  arch_ret_to_user, tmp1, tmp2
+                .endm
+
                 .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
                 mov     \base, #io_p2v(0x00100000)
                 add     \base, \base, #0x000ff000
diff --git a/include/asm-arm/arch-omap/entry-macro.S b/include/asm-arm/arch-omap/entry-macro.S
index 0ffb1185f1ac..c90dff4828f7 100644
--- a/include/asm-arm/arch-omap/entry-macro.S
+++ b/include/asm-arm/arch-omap/entry-macro.S
@@ -29,6 +29,12 @@
                 .macro  disable_fiq
                 .endm
 
+                .macro  get_irqnr_preamble, base, tmp
+                .endm
+
+                .macro  arch_ret_to_user, tmp1, tmp2
+                .endm
+
                 .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
                 ldr     \base, =IO_ADDRESS(OMAP_IH1_BASE)
                 ldr     \irqnr, [\base, #IRQ_ITR_REG_OFFSET]
diff --git a/include/asm-arm/arch-pnx4008/entry-macro.S b/include/asm-arm/arch-pnx4008/entry-macro.S
index c1c198e3680b..f11731974e5d 100644
--- a/include/asm-arm/arch-pnx4008/entry-macro.S
+++ b/include/asm-arm/arch-pnx4008/entry-macro.S
@@ -28,6 +28,12 @@
                 .macro  disable_fiq
                 .endm
 
+                .macro  get_irqnr_preamble, base, tmp
+                .endm
+
+                .macro  arch_ret_to_user, tmp1, tmp2
+                .endm
+
                 .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
 /* decode the MIC interrupt numbers */
                 ldr     \base, =IO_ADDRESS(PNX4008_INTCTRLMIC_BASE)
diff --git a/include/asm-arm/arch-pxa/entry-macro.S b/include/asm-arm/arch-pxa/entry-macro.S
index 4985e33afc12..1d5fbb9b379a 100644
--- a/include/asm-arm/arch-pxa/entry-macro.S
+++ b/include/asm-arm/arch-pxa/entry-macro.S
@@ -13,6 +13,12 @@
                 .macro  disable_fiq
                 .endm
 
+                .macro  get_irqnr_preamble, base, tmp
+                .endm
+
+                .macro  arch_ret_to_user, tmp1, tmp2
+                .endm
+
                 .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
 #ifdef CONFIG_PXA27x
                 mrc     p6, 0, \irqstat, c0, c0, 0              @ ICIP
diff --git a/include/asm-arm/arch-realview/entry-macro.S b/include/asm-arm/arch-realview/entry-macro.S
index 1a6eec86bd47..138838d4ad75 100644
--- a/include/asm-arm/arch-realview/entry-macro.S
+++ b/include/asm-arm/arch-realview/entry-macro.S
@@ -13,6 +13,12 @@
                 .macro  disable_fiq
                 .endm
 
+                .macro  get_irqnr_preamble, base, tmp
+                .endm
+
+                .macro  arch_ret_to_user, tmp1, tmp2
+                .endm
+
                 /*
                  * The interrupt numbering scheme is defined in the
                  * interrupt controller spec.  To wit:
diff --git a/include/asm-arm/arch-rpc/entry-macro.S b/include/asm-arm/arch-rpc/entry-macro.S
index c9e5395e5106..0cfb89b229d1 100644
--- a/include/asm-arm/arch-rpc/entry-macro.S
+++ b/include/asm-arm/arch-rpc/entry-macro.S
@@ -1,3 +1,8 @@
 #include <asm/hardware.h>
 #include <asm/hardware/entry-macro-iomd.S>
+        .macro  get_irqnr_preamble, base, tmp
+        .endm
+
+        .macro  arch_ret_to_user, tmp1, tmp2
+        .endm
 
diff --git a/include/asm-arm/arch-s3c2410/entry-macro.S b/include/asm-arm/arch-s3c2410/entry-macro.S
index 1eb4e6b8d249..bbec0a8ff158 100644
--- a/include/asm-arm/arch-s3c2410/entry-macro.S
+++ b/include/asm-arm/arch-s3c2410/entry-macro.S
@@ -22,6 +22,12 @@
 #include <asm/hardware.h>
 #include <asm/irq.h>
 
+        .macro  get_irqnr_preamble, base, tmp
+        .endm
+
+        .macro  arch_ret_to_user, tmp1, tmp2
+        .endm
+
         .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
 
                 mov     \base, #S3C24XX_VA_IRQ
diff --git a/include/asm-arm/arch-sa1100/entry-macro.S b/include/asm-arm/arch-sa1100/entry-macro.S
index 51fb50ce1169..028967629340 100644
--- a/include/asm-arm/arch-sa1100/entry-macro.S
+++ b/include/asm-arm/arch-sa1100/entry-macro.S
@@ -11,6 +11,12 @@
                 .macro  disable_fiq
                 .endm
 
+                .macro  get_irqnr_preamble, base, tmp
+                .endm
+
+                .macro  arch_ret_to_user, tmp1, tmp2
+                .endm
+
                 .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
                 mov     r4, #0xfa000000                 @ ICIP = 0xfa050000
                 add     r4, r4, #0x00050000
diff --git a/include/asm-arm/arch-shark/entry-macro.S b/include/asm-arm/arch-shark/entry-macro.S
index a924f27fb8d9..82463f30f3df 100644
--- a/include/asm-arm/arch-shark/entry-macro.S
+++ b/include/asm-arm/arch-shark/entry-macro.S
@@ -10,6 +10,12 @@
                 .macro  disable_fiq
                 .endm
 
+                .macro  get_irqnr_preamble, base, tmp
+                .endm
+
+                .macro  arch_ret_to_user, tmp1, tmp2
+                .endm
+
                 .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
                 mov     r4, #0xe0000000
 
diff --git a/include/asm-arm/arch-versatile/entry-macro.S b/include/asm-arm/arch-versatile/entry-macro.S
index feff771c0a0a..0fae002637a0 100644
--- a/include/asm-arm/arch-versatile/entry-macro.S
+++ b/include/asm-arm/arch-versatile/entry-macro.S
@@ -13,6 +13,12 @@
                 .macro  disable_fiq
                 .endm
 
+                .macro  get_irqnr_preamble, base, tmp
+                .endm
+
+                .macro  arch_ret_to_user, tmp1, tmp2
+                .endm
+
                 .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
                 ldr     \base, =IO_ADDRESS(VERSATILE_VIC_BASE)
                 ldr     \irqstat, [\base, #VIC_IRQ_STATUS]      @ get masked status
diff --git a/include/asm-arm/hardware/iop3xx.h b/include/asm-arm/hardware/iop3xx.h
index c91b546e20ef..15141a9caca8 100644
--- a/include/asm-arm/hardware/iop3xx.h
+++ b/include/asm-arm/hardware/iop3xx.h
@@ -188,14 +188,10 @@ extern void gpio_line_set(int line, int value);
 #define IOP3XX_TU_TRR1          (volatile u32 *)IOP3XX_TIMER_REG(0x0014)
 #define IOP3XX_TU_TISR          (volatile u32 *)IOP3XX_TIMER_REG(0x0018)
 #define IOP3XX_TU_WDTCR         (volatile u32 *)IOP3XX_TIMER_REG(0x001c)
-#define IOP3XX_TMR_TC           0x01
-#define IOP3XX_TMR_EN           0x02
-#define IOP3XX_TMR_RELOAD       0x04
-#define IOP3XX_TMR_PRIVILEGED   0x09
-#define IOP3XX_TMR_RATIO_1_1    0x00
-#define IOP3XX_TMR_RATIO_4_1    0x10
-#define IOP3XX_TMR_RATIO_8_1    0x20
-#define IOP3XX_TMR_RATIO_16_1   0x30
+#define IOP_TMR_EN          0x02
+#define IOP_TMR_RELOAD      0x04
+#define IOP_TMR_PRIVILEGED 0x08
+#define IOP_TMR_RATIO_1_1  0x00
 
 /* Application accelerator unit  */
 #define IOP3XX_AAU_ACR          (volatile u32 *)IOP3XX_REG_ADDR(0x0800)
@@ -276,40 +272,52 @@ extern void gpio_line_set(int line, int value);
 
 #ifndef __ASSEMBLY__
 void iop3xx_map_io(void);
-void iop3xx_init_time(unsigned long);
-unsigned long iop3xx_gettimeoffset(void);
 void iop_init_cp6_handler(void);
+void iop_init_time(unsigned long tickrate);
+unsigned long iop_gettimeoffset(void);
 
-extern struct platform_device iop3xx_i2c0_device;
-extern struct platform_device iop3xx_i2c1_device;
+static inline void write_tmr0(u32 val)
+{
+        asm volatile("mcr p6, 0, %0, c0, c1, 0" : : "r" (val));
+}
+
+static inline void write_tmr1(u32 val)
+{
+        asm volatile("mcr p6, 0, %0, c1, c1, 0" : : "r" (val));
+}
+
+static inline u32 read_tcr0(void)
+{
+        u32 val;
+        asm volatile("mrc p6, 0, %0, c2, c1, 0" : "=r" (val));
+        return val;
+}
 
-extern inline void iop3xx_cp6_enable(void)
+static inline u32 read_tcr1(void)
 {
-        u32 temp;
+        u32 val;
+        asm volatile("mrc p6, 0, %0, c3, c1, 0" : "=r" (val));
+        return val;
+}
 
-        asm volatile (
-                "mrc    p15, 0, %0, c15, c1, 0\n\t"
-                "orr    %0, %0, #(1 << 6)\n\t"
-                "mcr    p15, 0, %0, c15, c1, 0\n\t"
-                "mrc    p15, 0, %0, c15, c1, 0\n\t"
-                "mov    %0, %0\n\t"
-                "sub    pc, pc, #4\n\t"
-                : "=r" (temp) );
+static inline void write_trr0(u32 val)
+{
+        asm volatile("mcr p6, 0, %0, c4, c1, 0" : : "r" (val));
 }
 
-extern inline void iop3xx_cp6_disable(void)
+static inline void write_trr1(u32 val)
 {
-        u32 temp;
+        asm volatile("mcr p6, 0, %0, c5, c1, 0" : : "r" (val));
+}
 
-        asm volatile (
-                "mrc    p15, 0, %0, c15, c1, 0\n\t"
-                "bic    %0, %0, #(1 << 6)\n\t"
-                "mcr    p15, 0, %0, c15, c1, 0\n\t"
-                "mrc    p15, 0, %0, c15, c1, 0\n\t"
-                "mov    %0, %0\n\t"
-                "sub    pc, pc, #4\n\t"
-                : "=r" (temp) );
+static inline void write_tisr(u32 val)
+{
+        asm volatile("mcr p6, 0, %0, c6, c1, 0" : : "r" (val));
 }
+
+extern struct platform_device iop3xx_i2c0_device;
+extern struct platform_device iop3xx_i2c1_device;
+
 #endif