diff options
| author | Guo Ren <ren_guo@c-sky.com> | 2019-08-15 11:24:56 +0300 |
|---|---|---|
| committer | Guo Ren <ren_guo@c-sky.com> | 2019-08-15 14:21:28 +0300 |
| commit | 5336c17928cc464845ff765ce45b368c22f848e0 (patch) | |
| tree | 867349276607a1584dd0480fa67beda89e0cc76f /arch/csky/include | |
| parent | ae76f635d4e1cffa6870cc5472567ca9d6940a22 (diff) | |
| download | linux-5336c17928cc464845ff765ce45b368c22f848e0.tar.xz | |
csky: Fixup ioremap function losing
Implement the following apis to meet usage in different scenarios.
- ioremap (NonCache + StrongOrder)
- ioremap_nocache (NonCache + StrongOrder)
- ioremap_wc (NonCache + WeakOrder )
- ioremap_cache ( Cache + WeakOrder )
Also change flag VM_ALLOC to VM_IOREMAP in get_vm_area_caller.
Signed-off-by: Guo Ren <ren_guo@c-sky.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Christoph Hellwig <hch@infradead.org>
Diffstat (limited to 'arch/csky/include')
| -rw-r--r-- | arch/csky/include/asm/io.h | 23 |
1 files changed, 12 insertions, 11 deletions
diff --git a/arch/csky/include/asm/io.h b/arch/csky/include/asm/io.h index c1dfa9c10e36..80d071e2567f 100644 --- a/arch/csky/include/asm/io.h +++ b/arch/csky/include/asm/io.h @@ -4,17 +4,10 @@ #ifndef __ASM_CSKY_IO_H #define __ASM_CSKY_IO_H -#include <abi/pgtable-bits.h> +#include <asm/pgtable.h> #include <linux/types.h> #include <linux/version.h> -extern void __iomem *ioremap(phys_addr_t offset, size_t size); - -extern void iounmap(void *addr); - -extern int remap_area_pages(unsigned long address, phys_addr_t phys_addr, - size_t size, unsigned long flags); - /* * I/O memory access primitives. Reads are ordered relative to any * following Normal memory access. Writes are ordered relative to any prior @@ -40,9 +33,17 @@ extern int remap_area_pages(unsigned long address, phys_addr_t phys_addr, #define writel(v,c) ({ wmb(); writel_relaxed((v),(c)); mb(); }) #endif -#define ioremap_nocache(phy, sz) ioremap(phy, sz) -#define ioremap_wc ioremap_nocache -#define ioremap_wt ioremap_nocache +/* + * I/O memory mapping functions. + */ +extern void __iomem *ioremap_cache(phys_addr_t addr, size_t size); +extern void __iomem *__ioremap(phys_addr_t addr, size_t size, pgprot_t prot); +extern void iounmap(void *addr); + +#define ioremap(addr, size) __ioremap((addr), (size), pgprot_noncached(PAGE_KERNEL)) +#define ioremap_wc(addr, size) __ioremap((addr), (size), pgprot_writecombine(PAGE_KERNEL)) +#define ioremap_nocache(addr, size) ioremap((addr), (size)) +#define ioremap_cache ioremap_cache #include <asm-generic/io.h> |