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authorRussell King <rmk+kernel@arm.linux.org.uk>2012-01-05 17:24:16 +0400
committerRussell King <rmk+kernel@arm.linux.org.uk>2012-01-05 17:24:16 +0400
commita32737e1ca650504f172292dd344eb64c02311f3 (patch)
tree7dd2004ece26081507af877d9dd40b1bd4eecc1a /arch/arm/include
parent27edacac7d97d37ec77779c7da08345298a5d283 (diff)
parenta3c2b511a844641f6d0b60bd84cd6076143b3f2d (diff)
downloadlinux-a32737e1ca650504f172292dd344eb64c02311f3.tar.xz
Merge branches 'fixes' and 'misc' into for-linus
Diffstat (limited to 'arch/arm/include')
-rw-r--r--arch/arm/include/asm/edac.h48
-rw-r--r--arch/arm/include/asm/gpio.h4
-rw-r--r--arch/arm/include/asm/hardirq.h17
-rw-r--r--arch/arm/include/asm/opcodes.h20
-rw-r--r--arch/arm/include/asm/pgtable.h1
-rw-r--r--arch/arm/include/asm/processor.h2
-rw-r--r--arch/arm/include/asm/setup.h6
-rw-r--r--arch/arm/include/asm/swab.h5
8 files changed, 79 insertions, 24 deletions
diff --git a/arch/arm/include/asm/edac.h b/arch/arm/include/asm/edac.h
new file mode 100644
index 000000000000..0df7a2c1fc3d
--- /dev/null
+++ b/arch/arm/include/asm/edac.h
@@ -0,0 +1,48 @@
+/*
+ * Copyright 2011 Calxeda, Inc.
+ * Based on PPC version Copyright 2007 MontaVista Software, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#ifndef ASM_EDAC_H
+#define ASM_EDAC_H
+/*
+ * ECC atomic, DMA, SMP and interrupt safe scrub function.
+ * Implements the per arch atomic_scrub() that EDAC use for software
+ * ECC scrubbing. It reads memory and then writes back the original
+ * value, allowing the hardware to detect and correct memory errors.
+ */
+static inline void atomic_scrub(void *va, u32 size)
+{
+#if __LINUX_ARM_ARCH__ >= 6
+ unsigned int *virt_addr = va;
+ unsigned int temp, temp2;
+ unsigned int i;
+
+ for (i = 0; i < size / sizeof(*virt_addr); i++, virt_addr++) {
+ /* Very carefully read and write to memory atomically
+ * so we are interrupt, DMA and SMP safe.
+ */
+ __asm__ __volatile__("\n"
+ "1: ldrex %0, [%2]\n"
+ " strex %1, %0, [%2]\n"
+ " teq %1, #0\n"
+ " bne 1b\n"
+ : "=&r"(temp), "=&r"(temp2)
+ : "r"(virt_addr)
+ : "cc");
+ }
+#endif
+}
+
+#endif
diff --git a/arch/arm/include/asm/gpio.h b/arch/arm/include/asm/gpio.h
index 11ad0bfbb0ad..7151753b0989 100644
--- a/arch/arm/include/asm/gpio.h
+++ b/arch/arm/include/asm/gpio.h
@@ -1,6 +1,10 @@
#ifndef _ARCH_ARM_GPIO_H
#define _ARCH_ARM_GPIO_H
+#if CONFIG_ARCH_NR_GPIO > 0
+#define ARCH_NR_GPIO CONFIG_ARCH_NR_GPIO
+#endif
+
/* not all ARM platforms necessarily support this API ... */
#include <mach/gpio.h>
diff --git a/arch/arm/include/asm/hardirq.h b/arch/arm/include/asm/hardirq.h
index ddf07a92a6c8..436e60b2cf7a 100644
--- a/arch/arm/include/asm/hardirq.h
+++ b/arch/arm/include/asm/hardirq.h
@@ -27,23 +27,6 @@ u64 smp_irq_stat_cpu(unsigned int cpu);
#define arch_irq_stat_cpu smp_irq_stat_cpu
-#if NR_IRQS > 512
-#define HARDIRQ_BITS 10
-#elif NR_IRQS > 256
-#define HARDIRQ_BITS 9
-#else
-#define HARDIRQ_BITS 8
-#endif
-
-/*
- * The hardirq mask has to be large enough to have space
- * for potentially all IRQ sources in the system nesting
- * on a single CPU:
- */
-#if (1 << HARDIRQ_BITS) < NR_IRQS
-# error HARDIRQ_BITS is too low!
-#endif
-
#define __ARCH_IRQ_EXIT_IRQS_DISABLED 1
#endif /* __ASM_HARDIRQ_H */
diff --git a/arch/arm/include/asm/opcodes.h b/arch/arm/include/asm/opcodes.h
new file mode 100644
index 000000000000..c0efdd60966f
--- /dev/null
+++ b/arch/arm/include/asm/opcodes.h
@@ -0,0 +1,20 @@
+/*
+ * arch/arm/include/asm/opcodes.h
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __ASM_ARM_OPCODES_H
+#define __ASM_ARM_OPCODES_H
+
+#ifndef __ASSEMBLY__
+extern asmlinkage unsigned int arm_check_condition(u32 opcode, u32 psr);
+#endif
+
+#define ARM_OPCODE_CONDTEST_FAIL 0
+#define ARM_OPCODE_CONDTEST_PASS 1
+#define ARM_OPCODE_CONDTEST_UNCOND 2
+
+#endif /* __ASM_ARM_OPCODES_H */
diff --git a/arch/arm/include/asm/pgtable.h b/arch/arm/include/asm/pgtable.h
index 9451dce3a553..2f659e239727 100644
--- a/arch/arm/include/asm/pgtable.h
+++ b/arch/arm/include/asm/pgtable.h
@@ -336,6 +336,7 @@ static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
* We provide our own arch_get_unmapped_area to cope with VIPT caches.
*/
#define HAVE_ARCH_UNMAPPED_AREA
+#define HAVE_ARCH_UNMAPPED_AREA_TOPDOWN
/*
* remap a physical page `pfn' of size `size' with page protection `prot'
diff --git a/arch/arm/include/asm/processor.h b/arch/arm/include/asm/processor.h
index b2d9df5667af..ce280b8d613c 100644
--- a/arch/arm/include/asm/processor.h
+++ b/arch/arm/include/asm/processor.h
@@ -123,6 +123,8 @@ static inline void prefetch(const void *ptr)
#endif
+#define HAVE_ARCH_PICK_MMAP_LAYOUT
+
#endif
#endif /* __ASM_ARM_PROCESSOR_H */
diff --git a/arch/arm/include/asm/setup.h b/arch/arm/include/asm/setup.h
index 915696dd9c7c..23ebc0c82a39 100644
--- a/arch/arm/include/asm/setup.h
+++ b/arch/arm/include/asm/setup.h
@@ -192,11 +192,7 @@ static const struct tagtable __tagtable_##fn __tag = { tag, fn }
/*
* Memory map description
*/
-#ifdef CONFIG_ARCH_EP93XX
-# define NR_BANKS 16
-#else
-# define NR_BANKS 8
-#endif
+#define NR_BANKS CONFIG_ARM_NR_BANKS
struct membank {
phys_addr_t start;
diff --git a/arch/arm/include/asm/swab.h b/arch/arm/include/asm/swab.h
index 9997ad20eff1..32ee164a2f6b 100644
--- a/arch/arm/include/asm/swab.h
+++ b/arch/arm/include/asm/swab.h
@@ -24,12 +24,13 @@
#if defined(__KERNEL__) && __LINUX_ARM_ARCH__ >= 6
-static inline __attribute_const__ __u16 __arch_swab16(__u16 x)
+static inline __attribute_const__ __u32 __arch_swahb32(__u32 x)
{
__asm__ ("rev16 %0, %1" : "=r" (x) : "r" (x));
return x;
}
-#define __arch_swab16 __arch_swab16
+#define __arch_swahb32 __arch_swahb32
+#define __arch_swab16(x) ((__u16)__arch_swahb32(x))
static inline __attribute_const__ __u32 __arch_swab32(__u32 x)
{