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author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-10-27 18:53:26 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-10-27 18:53:26 -0700 |
commit | bdab225015fbbb45ccd8913f5d7c01b2bf67d8b2 (patch) | |
tree | 5ef62301face958977a084bf2b6c5300296a25f2 /arch/mn10300/mm/cache.c | |
parent | 7c5814c7199851c5fe9395d08fc1ab3c8c1531ea (diff) | |
parent | 7c7fcf762e405eb040ee10d22d656a791f616122 (diff) | |
download | linux-bdab225015fbbb45ccd8913f5d7c01b2bf67d8b2.tar.gz linux-bdab225015fbbb45ccd8913f5d7c01b2bf67d8b2.tar.bz2 linux-bdab225015fbbb45ccd8913f5d7c01b2bf67d8b2.zip |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-2.6-mn10300
* git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-2.6-mn10300: (44 commits)
MN10300: Save frame pointer in thread_info struct rather than global var
MN10300: Change "Matsushita" to "Panasonic".
MN10300: Create a defconfig for the ASB2364 board
MN10300: Update the ASB2303 defconfig
MN10300: ASB2364: Add support for SMSC911X and SMC911X
MN10300: ASB2364: Handle the IRQ multiplexer in the FPGA
MN10300: Generic time support
MN10300: Specify an ELF HWCAP flag for MN10300 Atomic Operations Unit support
MN10300: Map userspace atomic op regs as a vmalloc page
MN10300: And Panasonic AM34 subarch and implement SMP
MN10300: Delete idle_timestamp from irq_cpustat_t
MN10300: Make various interrupt priority settings configurable
MN10300: Optimise do_csum()
MN10300: Implement atomic ops using atomic ops unit
MN10300: Make the FPU operate in non-lazy mode under SMP
MN10300: SMP TLB flushing
MN10300: Use the [ID]PTEL2 registers rather than [ID]PTEL for TLB control
MN10300: Make the use of PIDR to mark TLB entries controllable
MN10300: Rename __flush_tlb*() to local_flush_tlb*()
MN10300: AM34 erratum requires MMUCTR read and write on exception entry
...
Diffstat (limited to 'arch/mn10300/mm/cache.c')
-rw-r--r-- | arch/mn10300/mm/cache.c | 95 |
1 files changed, 5 insertions, 90 deletions
diff --git a/arch/mn10300/mm/cache.c b/arch/mn10300/mm/cache.c index 9261217e8d2c..0a1f0aa92ebc 100644 --- a/arch/mn10300/mm/cache.c +++ b/arch/mn10300/mm/cache.c @@ -18,8 +18,13 @@ #include <asm/cacheflush.h> #include <asm/io.h> #include <asm/uaccess.h> +#include <asm/smp.h> +#include "cache-smp.h" EXPORT_SYMBOL(mn10300_icache_inv); +EXPORT_SYMBOL(mn10300_icache_inv_range); +EXPORT_SYMBOL(mn10300_icache_inv_range2); +EXPORT_SYMBOL(mn10300_icache_inv_page); EXPORT_SYMBOL(mn10300_dcache_inv); EXPORT_SYMBOL(mn10300_dcache_inv_range); EXPORT_SYMBOL(mn10300_dcache_inv_range2); @@ -37,96 +42,6 @@ EXPORT_SYMBOL(mn10300_dcache_flush_page); #endif /* - * write a page back from the dcache and invalidate the icache so that we can - * run code from it that we've just written into it - */ -void flush_icache_page(struct vm_area_struct *vma, struct page *page) -{ - mn10300_dcache_flush_page(page_to_phys(page)); - mn10300_icache_inv(); -} -EXPORT_SYMBOL(flush_icache_page); - -/* - * write some code we've just written back from the dcache and invalidate the - * icache so that we can run that code - */ -void flush_icache_range(unsigned long start, unsigned long end) -{ -#ifdef CONFIG_MN10300_CACHE_WBACK - unsigned long addr, size, base, off; - struct page *page; - pgd_t *pgd; - pud_t *pud; - pmd_t *pmd; - pte_t *ppte, pte; - - if (end > 0x80000000UL) { - /* addresses above 0xa0000000 do not go through the cache */ - if (end > 0xa0000000UL) { - end = 0xa0000000UL; - if (start >= end) - return; - } - - /* kernel addresses between 0x80000000 and 0x9fffffff do not - * require page tables, so we just map such addresses directly */ - base = (start >= 0x80000000UL) ? start : 0x80000000UL; - mn10300_dcache_flush_range(base, end); - if (base == start) - goto invalidate; - end = base; - } - - for (; start < end; start += size) { - /* work out how much of the page to flush */ - off = start & (PAGE_SIZE - 1); - - size = end - start; - if (size > PAGE_SIZE - off) - size = PAGE_SIZE - off; - - /* get the physical address the page is mapped to from the page - * tables */ - pgd = pgd_offset(current->mm, start); - if (!pgd || !pgd_val(*pgd)) - continue; - - pud = pud_offset(pgd, start); - if (!pud || !pud_val(*pud)) - continue; - - pmd = pmd_offset(pud, start); - if (!pmd || !pmd_val(*pmd)) - continue; - - ppte = pte_offset_map(pmd, start); - if (!ppte) - continue; - pte = *ppte; - pte_unmap(ppte); - - if (pte_none(pte)) - continue; - - page = pte_page(pte); - if (!page) - continue; - - addr = page_to_phys(page); - - /* flush the dcache and invalidate the icache coverage on that - * region */ - mn10300_dcache_flush_range2(addr + off, size); - } -#endif - -invalidate: - mn10300_icache_inv(); -} -EXPORT_SYMBOL(flush_icache_range); - -/* * allow userspace to flush the instruction cache */ asmlinkage long sys_cacheflush(unsigned long start, unsigned long end) |