forked from luck/tmp_suning_uos_patched
m68k: group io mapping definitions and functions
Create a new header file, kmap.h, that groups all the definitions and functions associated with the io mapping and remapping. Currently the functions are spread across raw_io.h and io_mm.h. And in the future we will want to use these in io_no.h as well. So it makes sense to move them all together into a single header file. It is named after the arch/m68k/mm/kmap.c file that actually implements many of the exported functions. Signed-off-by: Greg Ungerer <gerg@linux-m68k.org> Tested-by: Angelo Dureghello <angelo@sysam.it>
This commit is contained in:
Greg Ungerer
parent
4478048b44
commit
9746882f54
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@ -23,6 +23,7 @@
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#include <linux/types.h>
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#include <asm/bootinfo-atari.h>
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#include <asm/raw_io.h>
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#include <asm/kmap.h>
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extern u_long atari_mch_cookie;
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extern u_long atari_mch_type;
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@ -26,6 +26,7 @@
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#include <linux/compiler.h>
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#include <asm/raw_io.h>
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#include <asm/virtconvert.h>
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#include <asm/kmap.h>
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#include <asm-generic/iomap.h>
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@ -461,39 +462,6 @@ static inline void isa_delay(void)
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#define mmiowb()
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static inline void __iomem *ioremap(unsigned long physaddr, unsigned long size)
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{
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return __ioremap(physaddr, size, IOMAP_NOCACHE_SER);
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}
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static inline void __iomem *ioremap_nocache(unsigned long physaddr, unsigned long size)
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{
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return __ioremap(physaddr, size, IOMAP_NOCACHE_SER);
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}
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#define ioremap_uc ioremap_nocache
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static inline void __iomem *ioremap_wt(unsigned long physaddr,
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unsigned long size)
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{
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return __ioremap(physaddr, size, IOMAP_WRITETHROUGH);
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}
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static inline void __iomem *ioremap_fullcache(unsigned long physaddr,
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unsigned long size)
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{
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return __ioremap(physaddr, size, IOMAP_FULL_CACHING);
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}
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static inline void memset_io(volatile void __iomem *addr, unsigned char val, int count)
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{
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__builtin_memset((void __force *) addr, val, count);
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}
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static inline void memcpy_fromio(void *dst, const volatile void __iomem *src, int count)
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{
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__builtin_memcpy(dst, (void __force *) src, count);
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}
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static inline void memcpy_toio(volatile void __iomem *dst, const void *src, int count)
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{
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__builtin_memcpy((void __force *) dst, src, count);
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}
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#ifndef CONFIG_SUN3
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#define IO_SPACE_LIMIT 0xffff
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#else
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@ -515,15 +483,6 @@ static inline void memcpy_toio(volatile void __iomem *dst, const void *src, int
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*/
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#define xlate_dev_kmem_ptr(p) p
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static inline void __iomem *ioport_map(unsigned long port, unsigned int nr)
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{
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return (void __iomem *) port;
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}
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static inline void ioport_unmap(void __iomem *p)
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{
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}
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#define readb_relaxed(addr) readb(addr)
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#define readw_relaxed(addr) readw(addr)
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#define readl_relaxed(addr) readl(addr)
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@ -25,6 +25,18 @@
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#define writew __raw_writew
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#define writel __raw_writel
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/*
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* These are defined in kmap.h as static inline functions. To maintain
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* previous behavior we put these define guards here so io_mm.h doesn't
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* see them.
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*/
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#ifdef CONFIG_MMU
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#define memset_io memset_io
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#define memcpy_fromio memcpy_fromio
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#define memcpy_toio memcpy_toio
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#endif
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#include <asm/kmap.h>
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#include <asm/virtconvert.h>
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#include <asm-generic/io.h>
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80
arch/m68k/include/asm/kmap.h
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80
arch/m68k/include/asm/kmap.h
Normal file
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@ -0,0 +1,80 @@
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/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _KMAP_H
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#define _KMAP_H
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#ifdef CONFIG_MMU
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/* Values for nocacheflag and cmode */
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#define IOMAP_FULL_CACHING 0
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#define IOMAP_NOCACHE_SER 1
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#define IOMAP_NOCACHE_NONSER 2
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#define IOMAP_WRITETHROUGH 3
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/*
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* These functions exported by arch/m68k/mm/kmap.c.
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* Only needed on MMU enabled systems.
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*/
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extern void __iomem *__ioremap(unsigned long physaddr, unsigned long size,
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int cacheflag);
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extern void iounmap(void __iomem *addr);
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extern void __iounmap(void *addr, unsigned long size);
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#define ioremap ioremap
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static inline void __iomem *ioremap(unsigned long physaddr, unsigned long size)
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{
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return __ioremap(physaddr, size, IOMAP_NOCACHE_SER);
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}
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#define ioremap_nocache ioremap_nocache
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static inline void __iomem *ioremap_nocache(unsigned long physaddr,
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unsigned long size)
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{
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return __ioremap(physaddr, size, IOMAP_NOCACHE_SER);
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}
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#define ioremap_uc ioremap_nocache
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static inline void __iomem *ioremap_wt(unsigned long physaddr,
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unsigned long size)
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{
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return __ioremap(physaddr, size, IOMAP_WRITETHROUGH);
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}
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#define ioremap_fillcache ioremap_fullcache
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static inline void __iomem *ioremap_fullcache(unsigned long physaddr,
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unsigned long size)
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{
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return __ioremap(physaddr, size, IOMAP_FULL_CACHING);
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}
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static inline void memset_io(volatile void __iomem *addr, unsigned char val,
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int count)
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{
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__builtin_memset((void __force *) addr, val, count);
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}
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static inline void memcpy_fromio(void *dst, const volatile void __iomem *src,
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int count)
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{
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__builtin_memcpy(dst, (void __force *) src, count);
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}
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static inline void memcpy_toio(volatile void __iomem *dst, const void *src,
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int count)
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{
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__builtin_memcpy((void __force *) dst, src, count);
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}
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#endif /* CONFIG_MMU */
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#define ioport_map ioport_map
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static inline void __iomem *ioport_map(unsigned long port, unsigned int nr)
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{
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return (void __iomem *) port;
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}
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#define ioport_unmap ioport_unmap
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static inline void ioport_unmap(void __iomem *p)
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{
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}
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#endif /* _KMAP_H */
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@ -3,6 +3,7 @@
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#define _ASM_M68K_NUBUS_H
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#include <asm/raw_io.h>
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#include <asm/kmap.h>
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#define nubus_readb raw_inb
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#define nubus_readw raw_inw
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@ -8,7 +8,7 @@
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#define _Q40_MASTER_H
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#include <asm/raw_io.h>
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#include <asm/kmap.h>
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#define q40_master_addr 0xff000000
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@ -13,20 +13,6 @@
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#include <asm/byteorder.h>
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/* Values for nocacheflag and cmode */
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#define IOMAP_FULL_CACHING 0
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#define IOMAP_NOCACHE_SER 1
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#define IOMAP_NOCACHE_NONSER 2
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#define IOMAP_WRITETHROUGH 3
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extern void iounmap(void __iomem *addr);
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extern void __iomem *__ioremap(unsigned long physaddr, unsigned long size,
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int cacheflag);
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extern void __iounmap(void *addr, unsigned long size);
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/* ++roman: The assignments to temp. vars avoid that gcc sometimes generates
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* two accesses to memory, which may be undesirable for some devices.
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*/
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@ -3,6 +3,7 @@
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#define _ASM_M68K_VGA_H
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#include <asm/raw_io.h>
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#include <asm/kmap.h>
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/*
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* FIXME
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@ -3,6 +3,7 @@
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#define _ASM_M68K_ZORRO_H
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#include <asm/raw_io.h>
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#include <asm/kmap.h>
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#define z_readb raw_inb
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#define z_readw raw_inw
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