[PATCH v4 8/8] arm64: Use include/asm-generic/io.h
Thierry Reding
thierry.reding at gmail.com
Wed Aug 13 03:28:58 PDT 2014
From: Thierry Reding <treding at nvidia.com>
Include the generic I/O header file so that duplicate implementations
can be removed. This will also help to establish consistency across more
architectures regarding which accessors they support.
Acked-by: Catalin Marinas <catalin.marinas at arm.com>
Signed-off-by: Thierry Reding <treding at nvidia.com>
---
Changes in v4:
- define xlate_dev_{kmem,mem}_ptr() before asm-generic/io.h include
Changes in v3:
- add io{read,write}{16,32}be() to match what 32-bit ARM does
arch/arm64/Kconfig | 1 -
arch/arm64/include/asm/io.h | 122 ++++++++--------------------------------
arch/arm64/include/asm/memory.h | 2 +
3 files changed, 27 insertions(+), 98 deletions(-)
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 62b4ae1c5bbf..c06bd0b67865 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -23,7 +23,6 @@ config ARM64
select GENERIC_CLOCKEVENTS_BROADCAST if SMP
select GENERIC_CPU_AUTOPROBE
select GENERIC_EARLY_IOREMAP
- select GENERIC_IOMAP
select GENERIC_IRQ_PROBE
select GENERIC_IRQ_SHOW
select GENERIC_SCHED_CLOCK
diff --git a/arch/arm64/include/asm/io.h b/arch/arm64/include/asm/io.h
index e0ecdcf6632d..a8e7a717c360 100644
--- a/arch/arm64/include/asm/io.h
+++ b/arch/arm64/include/asm/io.h
@@ -34,26 +34,31 @@
/*
* Generic IO read/write. These perform native-endian accesses.
*/
+#define __raw_writeb __raw_writeb
static inline void __raw_writeb(u8 val, volatile void __iomem *addr)
{
asm volatile("strb %w0, [%1]" : : "r" (val), "r" (addr));
}
+#define __raw_writew __raw_writew
static inline void __raw_writew(u16 val, volatile void __iomem *addr)
{
asm volatile("strh %w0, [%1]" : : "r" (val), "r" (addr));
}
+#define __raw_writel __raw_writel
static inline void __raw_writel(u32 val, volatile void __iomem *addr)
{
asm volatile("str %w0, [%1]" : : "r" (val), "r" (addr));
}
+#define __raw_writeq __raw_writeq
static inline void __raw_writeq(u64 val, volatile void __iomem *addr)
{
asm volatile("str %0, [%1]" : : "r" (val), "r" (addr));
}
+#define __raw_readb __raw_readb
static inline u8 __raw_readb(const volatile void __iomem *addr)
{
u8 val;
@@ -61,6 +66,7 @@ static inline u8 __raw_readb(const volatile void __iomem *addr)
return val;
}
+#define __raw_readw __raw_readw
static inline u16 __raw_readw(const volatile void __iomem *addr)
{
u16 val;
@@ -68,6 +74,7 @@ static inline u16 __raw_readw(const volatile void __iomem *addr)
return val;
}
+#define __raw_readl __raw_readl
static inline u32 __raw_readl(const volatile void __iomem *addr)
{
u32 val;
@@ -75,6 +82,7 @@ static inline u32 __raw_readl(const volatile void __iomem *addr)
return val;
}
+#define __raw_readq __raw_readq
static inline u64 __raw_readq(const volatile void __iomem *addr)
{
u64 val;
@@ -124,94 +132,6 @@ static inline u64 __raw_readq(const volatile void __iomem *addr)
#define IO_SPACE_LIMIT 0xffff
#define PCI_IOBASE ((void __iomem *)(MODULES_VADDR - SZ_32M))
-static inline u8 inb(unsigned long addr)
-{
- return readb(addr + PCI_IOBASE);
-}
-
-static inline u16 inw(unsigned long addr)
-{
- return readw(addr + PCI_IOBASE);
-}
-
-static inline u32 inl(unsigned long addr)
-{
- return readl(addr + PCI_IOBASE);
-}
-
-static inline void outb(u8 b, unsigned long addr)
-{
- writeb(b, addr + PCI_IOBASE);
-}
-
-static inline void outw(u16 b, unsigned long addr)
-{
- writew(b, addr + PCI_IOBASE);
-}
-
-static inline void outl(u32 b, unsigned long addr)
-{
- writel(b, addr + PCI_IOBASE);
-}
-
-#define inb_p(addr) inb(addr)
-#define inw_p(addr) inw(addr)
-#define inl_p(addr) inl(addr)
-
-#define outb_p(x, addr) outb((x), (addr))
-#define outw_p(x, addr) outw((x), (addr))
-#define outl_p(x, addr) outl((x), (addr))
-
-static inline void insb(unsigned long addr, void *buffer, int count)
-{
- u8 *buf = buffer;
- while (count--)
- *buf++ = __raw_readb(addr + PCI_IOBASE);
-}
-
-static inline void insw(unsigned long addr, void *buffer, int count)
-{
- u16 *buf = buffer;
- while (count--)
- *buf++ = __raw_readw(addr + PCI_IOBASE);
-}
-
-static inline void insl(unsigned long addr, void *buffer, int count)
-{
- u32 *buf = buffer;
- while (count--)
- *buf++ = __raw_readl(addr + PCI_IOBASE);
-}
-
-static inline void outsb(unsigned long addr, const void *buffer, int count)
-{
- const u8 *buf = buffer;
- while (count--)
- __raw_writeb(*buf++, addr + PCI_IOBASE);
-}
-
-static inline void outsw(unsigned long addr, const void *buffer, int count)
-{
- const u16 *buf = buffer;
- while (count--)
- __raw_writew(*buf++, addr + PCI_IOBASE);
-}
-
-static inline void outsl(unsigned long addr, const void *buffer, int count)
-{
- const u32 *buf = buffer;
- while (count--)
- __raw_writel(*buf++, addr + PCI_IOBASE);
-}
-
-#define insb_p(port,to,len) insb(port,to,len)
-#define insw_p(port,to,len) insw(port,to,len)
-#define insl_p(port,to,len) insl(port,to,len)
-
-#define outsb_p(port,from,len) outsb(port,from,len)
-#define outsw_p(port,from,len) outsw(port,from,len)
-#define outsl_p(port,from,len) outsl(port,from,len)
-
/*
* String version of I/O memory access operations.
*/
@@ -235,18 +155,14 @@ extern void __iomem *ioremap_cache(phys_addr_t phys_addr, size_t size);
#define ioremap_wc(addr, size) __ioremap((addr), (size), __pgprot(PROT_NORMAL_NC))
#define iounmap __iounmap
-#define ARCH_HAS_IOREMAP_WC
-#include <asm-generic/iomap.h>
-
/*
- * More restrictive address range checking than the default implementation
- * (PHYS_OFFSET and PHYS_MASK taken into account).
+ * io{read,write}{16,32}be() macros
*/
-#define ARCH_HAS_VALID_PHYS_ADDR_RANGE
-extern int valid_phys_addr_range(unsigned long addr, size_t size);
-extern int valid_mmap_phys_addr_range(unsigned long pfn, size_t size);
+#define ioread16be(p) ({ __u16 __v = be16_to_cpu((__force __be16)__raw_readw(p)); __iormb(); __v; })
+#define ioread32be(p) ({ __u32 __v = be32_to_cpu((__force __be32)__raw_readl(p)); __iormb(); __v; })
-extern int devmem_is_allowed(unsigned long pfn);
+#define iowrite16be(v,p) ({ __iowmb(); __raw_writew((__force __u16)cpu_to_be16(v), p); })
+#define iowrite32be(v,p) ({ __iowmb(); __raw_writew((__force __u32)cpu_to_be32(v), p); })
/*
* Convert a physical pointer to a virtual kernel pointer for /dev/mem
@@ -259,6 +175,18 @@ extern int devmem_is_allowed(unsigned long pfn);
*/
#define xlate_dev_kmem_ptr(p) p
+#include <asm-generic/io.h>
+
+/*
+ * More restrictive address range checking than the default implementation
+ * (PHYS_OFFSET and PHYS_MASK taken into account).
+ */
+#define ARCH_HAS_VALID_PHYS_ADDR_RANGE
+extern int valid_phys_addr_range(unsigned long addr, size_t size);
+extern int valid_mmap_phys_addr_range(unsigned long pfn, size_t size);
+
+extern int devmem_is_allowed(unsigned long pfn);
+
struct bio_vec;
extern bool xen_biovec_phys_mergeable(const struct bio_vec *vec1,
const struct bio_vec *vec2);
diff --git a/arch/arm64/include/asm/memory.h b/arch/arm64/include/asm/memory.h
index ccc7087d3c4e..a40a4d7e830f 100644
--- a/arch/arm64/include/asm/memory.h
+++ b/arch/arm64/include/asm/memory.h
@@ -120,11 +120,13 @@ extern phys_addr_t memstart_addr;
* translation for translating DMA addresses. Use the driver
* DMA support - see dma-mapping.h.
*/
+#define virt_to_phys virt_to_phys
static inline phys_addr_t virt_to_phys(const volatile void *x)
{
return __virt_to_phys((unsigned long)(x));
}
+#define phys_to_virt phys_to_virt
static inline void *phys_to_virt(phys_addr_t x)
{
return (void *)(__phys_to_virt(x));
--
2.0.4
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