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Diffstat (limited to 'arch/metag/include/asm/io.h')
| -rw-r--r-- | arch/metag/include/asm/io.h | 170 |
1 files changed, 0 insertions, 170 deletions
diff --git a/arch/metag/include/asm/io.h b/arch/metag/include/asm/io.h deleted file mode 100644 index 71cd2bc54718..000000000000 --- a/arch/metag/include/asm/io.h +++ /dev/null @@ -1,170 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -#ifndef _ASM_METAG_IO_H -#define _ASM_METAG_IO_H - -#include <linux/types.h> -#include <asm/pgtable-bits.h> - -#define IO_SPACE_LIMIT 0 - -#define page_to_bus page_to_phys -#define bus_to_page phys_to_page - -/* - * Generic I/O - */ - -#define __raw_readb __raw_readb -static inline u8 __raw_readb(const volatile void __iomem *addr) -{ - u8 ret; - asm volatile("GETB %0,[%1]" - : "=da" (ret) - : "da" (addr) - : "memory"); - return ret; -} - -#define __raw_readw __raw_readw -static inline u16 __raw_readw(const volatile void __iomem *addr) -{ - u16 ret; - asm volatile("GETW %0,[%1]" - : "=da" (ret) - : "da" (addr) - : "memory"); - return ret; -} - -#define __raw_readl __raw_readl -static inline u32 __raw_readl(const volatile void __iomem *addr) -{ - u32 ret; - asm volatile("GETD %0,[%1]" - : "=da" (ret) - : "da" (addr) - : "memory"); - return ret; -} - -#define __raw_readq __raw_readq -static inline u64 __raw_readq(const volatile void __iomem *addr) -{ - u64 ret; - asm volatile("GETL %0,%t0,[%1]" - : "=da" (ret) - : "da" (addr) - : "memory"); - return ret; -} - -#define __raw_writeb __raw_writeb -static inline void __raw_writeb(u8 b, volatile void __iomem *addr) -{ - asm volatile("SETB [%0],%1" - : - : "da" (addr), - "da" (b) - : "memory"); -} - -#define __raw_writew __raw_writew -static inline void __raw_writew(u16 b, volatile void __iomem *addr) -{ - asm volatile("SETW [%0],%1" - : - : "da" (addr), - "da" (b) - : "memory"); -} - -#define __raw_writel __raw_writel -static inline void __raw_writel(u32 b, volatile void __iomem *addr) -{ - asm volatile("SETD [%0],%1" - : - : "da" (addr), - "da" (b) - : "memory"); -} - -#define __raw_writeq __raw_writeq -static inline void __raw_writeq(u64 b, volatile void __iomem *addr) -{ - asm volatile("SETL [%0],%1,%t1" - : - : "da" (addr), - "da" (b) - : "memory"); -} - -/* - * The generic io.h can define all the other generic accessors - */ - -#include <asm-generic/io.h> - -/* - * Despite being a 32bit architecture, Meta can do 64bit memory accesses - * (assuming the bus supports it). - */ - -#define readq __raw_readq -#define writeq __raw_writeq - -/* - * Meta specific I/O for accessing non-MMU areas. - * - * These can be provided with a physical address rather than an __iomem pointer - * and should only be used by core architecture code for accessing fixed core - * registers. Generic drivers should use ioremap and the generic I/O accessors. - */ - -#define metag_in8(addr) __raw_readb((volatile void __iomem *)(addr)) -#define metag_in16(addr) __raw_readw((volatile void __iomem *)(addr)) -#define metag_in32(addr) __raw_readl((volatile void __iomem *)(addr)) -#define metag_in64(addr) __raw_readq((volatile void __iomem *)(addr)) - -#define metag_out8(b, addr) __raw_writeb(b, (volatile void __iomem *)(addr)) -#define metag_out16(b, addr) __raw_writew(b, (volatile void __iomem *)(addr)) -#define metag_out32(b, addr) __raw_writel(b, (volatile void __iomem *)(addr)) -#define metag_out64(b, addr) __raw_writeq(b, (volatile void __iomem *)(addr)) - -/* - * io remapping functions - */ - -extern void __iomem *__ioremap(unsigned long offset, - size_t size, unsigned long flags); -extern void __iounmap(void __iomem *addr); - -/** - * ioremap - map bus memory into CPU space - * @offset: bus address of the memory - * @size: size of the resource to map - * - * ioremap performs a platform specific sequence of operations to - * make bus memory CPU accessible via the readb/readw/readl/writeb/ - * writew/writel functions and the other mmio helpers. The returned - * address is not guaranteed to be usable directly as a virtual - * address. - */ -#define ioremap(offset, size) \ - __ioremap((offset), (size), 0) - -#define ioremap_nocache(offset, size) \ - __ioremap((offset), (size), 0) - -#define ioremap_cached(offset, size) \ - __ioremap((offset), (size), _PAGE_CACHEABLE) - -#define ioremap_wc(offset, size) \ - __ioremap((offset), (size), _PAGE_WR_COMBINE) - -#define ioremap_wt(offset, size) \ - __ioremap((offset), (size), 0) - -#define iounmap(addr) \ - __iounmap(addr) - -#endif /* _ASM_METAG_IO_H */ |