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sh: Get SH-5 caches working again post-unification.

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A number of cleanups to get the SH-5 cache management code in line with
the rest of the SH backend.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Paul Mundt
2008-02-13 20:14:10 +09:00
parent 5c8f82c649
commit 38350e0a00
5 changed files with 473 additions and 673 deletions
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4
include/asm-sh/cpu-sh5/cacheflush.h
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@@ -3,8 +3,6 @@
#ifndef __ASSEMBLY__
#include <asm/page.h>
struct vm_area_struct;
struct page;
struct mm_struct;
@@ -27,7 +25,7 @@ extern void flush_icache_user_range(struct vm_area_struct *vma,
#define flush_dcache_mmap_unlock(mapping) do { } while (0)
#define flush_icache_page(vma, page) do { } while (0)
#define p3_cache_init() do { } while (0)
void p3_cache_init(void);
#endif /* __ASSEMBLY__ */

3
include/asm-sh/mmu_context_64.h
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@@ -66,6 +66,9 @@ static inline void set_asid(unsigned long asid)
: "=r" (sr), "=r" (pc) : "0" (sr));
}
/* arch/sh/kernel/cpu/sh5/entry.S */
extern unsigned long switch_and_save_asid(unsigned long new_asid);
/* No spare register to twiddle, so use a software cache */
extern pgd_t *mmu_pdtp_cache;

7
include/asm-sh/page.h
View File

@@ -55,11 +55,14 @@ extern void clear_page(void *to);
extern void copy_page(void *to, void *from);
#if !defined(CONFIG_CACHE_OFF) && defined(CONFIG_MMU) && \
(defined(CONFIG_CPU_SH4) || defined(CONFIG_SH7705_CACHE_32KB))
(defined(CONFIG_CPU_SH5) || defined(CONFIG_CPU_SH4) || \
defined(CONFIG_SH7705_CACHE_32KB))
struct page;
struct vm_area_struct;
extern void clear_user_page(void *to, unsigned long address, struct page *page);
#ifdef CONFIG_CPU_SH4
extern void copy_user_page(void *to, void *from, unsigned long address,
struct page *page);
#if defined(CONFIG_CPU_SH4)
extern void copy_user_highpage(struct page *to, struct page *from,
unsigned long vaddr, struct vm_area_struct *vma);
#define __HAVE_ARCH_COPY_USER_HIGHPAGE