/* * Copyright (C) 2007-2009 Michal Simek <monstr@monstr.eu> * Copyright (C) 2007-2009 PetaLogix * Copyright (C) 2007 John Williams <john.williams@petalogix.com> * based on v850 version which was * Copyright (C) 2001,02,03 NEC Electronics Corporation * Copyright (C) 2001,02,03 Miles Bader <miles@gnu.org> * * This file is subject to the terms and conditions of the GNU General * Public License. See the file COPYING in the main directory of this * archive for more details. * */ #ifndef _ASM_MICROBLAZE_CACHEFLUSH_H #define _ASM_MICROBLAZE_CACHEFLUSH_H /* Somebody depends on this; sigh... */ #include <linux/mm.h> #include <linux/io.h> /* Look at Documentation/cachetlb.txt */ /* * Cache handling functions. * Microblaze has a write-through data cache, meaning that the data cache * never needs to be flushed. The only flushing operations that are * implemented are to invalidate the instruction cache. These are called * after loading a user application into memory, we must invalidate the * instruction cache to make sure we don't fetch old, bad code. */ /* struct cache, d=dcache, i=icache, fl = flush, iv = invalidate, * suffix r = range */ struct scache { /* icache */ void (*ie)(void); /* enable */ void (*id)(void); /* disable */ void (*ifl)(void); /* flush */ void (*iflr)(unsigned long a, unsigned long b); void (*iin)(void); /* invalidate */ void (*iinr)(unsigned long a, unsigned long b); /* dcache */ void (*de)(void); /* enable */ void (*dd)(void); /* disable */ void (*dfl)(void); /* flush */ void (*dflr)(unsigned long a, unsigned long b); void (*din)(void); /* invalidate */ void (*dinr)(unsigned long a, unsigned long b); }; /* microblaze cache */ extern struct scache *mbc; void microblaze_cache_init(void); #define enable_icache() mbc->ie(); #define disable_icache() mbc->id(); #define flush_icache() mbc->ifl(); #define flush_icache_range(start, end) mbc->iflr(start, end); #define invalidate_icache() mbc->iin(); #define invalidate_icache_range(start, end) mbc->iinr(start, end); #define flush_icache_user_range(vma, pg, adr, len) flush_icache(); #define flush_icache_page(vma, pg) do { } while (0) #define enable_dcache() mbc->de(); #define disable_dcache() mbc->dd(); /* FIXME for LL-temac driver */ #define invalidate_dcache() mbc->din(); #define invalidate_dcache_range(start, end) mbc->dinr(start, end); #define flush_dcache() mbc->dfl(); #define flush_dcache_range(start, end) mbc->dflr(start, end); #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1 /* MS: We have to implement it because of rootfs-jffs2 issue on WB */ #define flush_dcache_page(page) \ do { \ unsigned long addr = (unsigned long) page_address(page); /* virtual */ \ addr = (u32)virt_to_phys((void *)addr); \ flush_dcache_range((unsigned) (addr), (unsigned) (addr) + PAGE_SIZE); \ } while (0); #define flush_dcache_mmap_lock(mapping) do { } while (0) #define flush_dcache_mmap_unlock(mapping) do { } while (0) #define flush_cache_dup_mm(mm) do { } while (0) #define flush_cache_vmap(start, end) do { } while (0) #define flush_cache_vunmap(start, end) do { } while (0) #define flush_cache_mm(mm) do { } while (0) #define flush_cache_page(vma, vmaddr, pfn) \ flush_dcache_range(pfn << PAGE_SHIFT, (pfn << PAGE_SHIFT) + PAGE_SIZE); /* MS: kgdb code use this macro, wrong len with FLASH */ #if 0 #define flush_cache_range(vma, start, len) { \ flush_icache_range((unsigned) (start), (unsigned) (start) + (len)); \ flush_dcache_range((unsigned) (start), (unsigned) (start) + (len)); \ } #endif #define flush_cache_range(vma, start, len) do { } while (0) static inline void copy_to_user_page(struct vm_area_struct *vma, struct page *page, unsigned long vaddr, void *dst, void *src, int len) { u32 addr = virt_to_phys(dst); memcpy(dst, src, len); if (vma->vm_flags & VM_EXEC) { invalidate_icache_range(addr, addr + PAGE_SIZE); flush_dcache_range(addr, addr + PAGE_SIZE); } } static inline void copy_from_user_page(struct vm_area_struct *vma, struct page *page, unsigned long vaddr, void *dst, void *src, int len) { memcpy(dst, src, len); } #endif /* _ASM_MICROBLAZE_CACHEFLUSH_H */
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Kbuild | File | 742 B | 0644 |
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asm-compat.h | File | 518 B | 0644 |
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asm-offsets.h | File | 35 B | 0644 |
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atomic.h | File | 626 B | 0644 |
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cache.h | File | 644 B | 0644 |
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cacheflush.h | File | 4.12 KB | 0644 |
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checksum.h | File | 942 B | 0644 |
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cmpxchg.h | File | 919 B | 0644 |
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cpuinfo.h | File | 2.13 KB | 0644 |
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cputable.h | File | 1 B | 0644 |
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current.h | File | 850 B | 0644 |
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delay.h | File | 2.26 KB | 0644 |
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dma-mapping.h | File | 765 B | 0644 |
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dma.h | File | 706 B | 0644 |
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elf.h | File | 738 B | 0644 |
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entry.h | File | 1.13 KB | 0644 |
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exceptions.h | File | 2.08 KB | 0644 |
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fixmap.h | File | 1.96 KB | 0644 |
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flat.h | File | 2.26 KB | 0644 |
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ftrace.h | File | 641 B | 0644 |
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futex.h | File | 2.13 KB | 0644 |
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hash.h | File | 2.37 KB | 0644 |
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highmem.h | File | 2.2 KB | 0644 |
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hw_irq.h | File | 1 B | 0644 |
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io.h | File | 2.05 KB | 0644 |
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irq.h | File | 538 B | 0644 |
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irqflags.h | File | 2.6 KB | 0644 |
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kgdb.h | File | 739 B | 0644 |
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mmu.h | File | 4.19 KB | 0644 |
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mmu_context.h | File | 141 B | 0644 |
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mmu_context_mm.h | File | 3.91 KB | 0644 |
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module.h | File | 840 B | 0644 |
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page.h | File | 6.11 KB | 0644 |
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pci-bridge.h | File | 4.57 KB | 0644 |
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pci.h | File | 2.47 KB | 0644 |
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pgalloc.h | File | 4.74 KB | 0644 |
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pgtable.h | File | 17.66 KB | 0644 |
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processor.h | File | 4.11 KB | 0644 |
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prom.h | File | 713 B | 0644 |
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ptrace.h | File | 727 B | 0644 |
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pvr.h | File | 8.72 KB | 0644 |
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registers.h | File | 1.65 KB | 0644 |
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seccomp.h | File | 256 B | 0644 |
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sections.h | File | 637 B | 0644 |
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setup.h | File | 1.37 KB | 0644 |
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string.h | File | 630 B | 0644 |
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switch_to.h | File | 629 B | 0644 |
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syscall.h | File | 2.26 KB | 0644 |
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thread_info.h | File | 4.01 KB | 0644 |
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timex.h | File | 402 B | 0644 |
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tlb.h | File | 714 B | 0644 |
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tlbflush.h | File | 2.04 KB | 0644 |
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uaccess.h | File | 9.98 KB | 0644 |
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unaligned.h | File | 871 B | 0644 |
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unistd.h | File | 1.19 KB | 0644 |
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unwind.h | File | 719 B | 0644 |
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user.h | File | 1 B | 0644 |
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