diff options
Diffstat (limited to 'arch/c6x/include')
| -rw-r--r-- | arch/c6x/include/asm/cache.h | 90 | ||||
| -rw-r--r-- | arch/c6x/include/asm/cacheflush.h | 65 |
2 files changed, 155 insertions, 0 deletions
diff --git a/arch/c6x/include/asm/cache.h b/arch/c6x/include/asm/cache.h new file mode 100644 index 000000000000..6d521d96d941 --- /dev/null +++ b/arch/c6x/include/asm/cache.h @@ -0,0 +1,90 @@ +/* + * Port on Texas Instruments TMS320C6x architecture + * + * Copyright (C) 2005, 2006, 2009, 2010 Texas Instruments Incorporated + * Author: Aurelien Jacquiot (aurelien.jacquiot@jaluna.com) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#ifndef _ASM_C6X_CACHE_H +#define _ASM_C6X_CACHE_H + +#include <linux/irqflags.h> + +/* + * Cache line size + */ +#define L1D_CACHE_BYTES 64 +#define L1P_CACHE_BYTES 32 +#define L2_CACHE_BYTES 128 + +/* + * L2 used as cache + */ +#define L2MODE_SIZE L2MODE_256K_CACHE + +/* + * For practical reasons the L1_CACHE_BYTES defines should not be smaller than + * the L2 line size + */ +#define L1_CACHE_BYTES L2_CACHE_BYTES + +#define L2_CACHE_ALIGN_LOW(x) \ + (((x) & ~(L2_CACHE_BYTES - 1))) +#define L2_CACHE_ALIGN_UP(x) \ + (((x) + (L2_CACHE_BYTES - 1)) & ~(L2_CACHE_BYTES - 1)) +#define L2_CACHE_ALIGN_CNT(x) \ + (((x) + (sizeof(int) - 1)) & ~(sizeof(int) - 1)) + +#define ARCH_DMA_MINALIGN L1_CACHE_BYTES +#define ARCH_SLAB_MINALIGN L1_CACHE_BYTES + +/* + * This is the granularity of hardware cacheability control. + */ +#define CACHEABILITY_ALIGN 0x01000000 + +/* + * Align a physical address to MAR regions + */ +#define CACHE_REGION_START(v) \ + (((u32) (v)) & ~(CACHEABILITY_ALIGN - 1)) +#define CACHE_REGION_END(v) \ + (((u32) (v) + (CACHEABILITY_ALIGN - 1)) & ~(CACHEABILITY_ALIGN - 1)) + +extern void __init c6x_cache_init(void); + +extern void enable_caching(unsigned long start, unsigned long end); +extern void disable_caching(unsigned long start, unsigned long end); + +extern void L1_cache_off(void); +extern void L1_cache_on(void); + +extern void L1P_cache_global_invalidate(void); +extern void L1D_cache_global_invalidate(void); +extern void L1D_cache_global_writeback(void); +extern void L1D_cache_global_writeback_invalidate(void); +extern void L2_cache_set_mode(unsigned int mode); +extern void L2_cache_global_writeback_invalidate(void); +extern void L2_cache_global_writeback(void); + +extern void L1P_cache_block_invalidate(unsigned int start, unsigned int end); +extern void L1D_cache_block_invalidate(unsigned int start, unsigned int end); +extern void L1D_cache_block_writeback_invalidate(unsigned int start, + unsigned int end); +extern void L1D_cache_block_writeback(unsigned int start, unsigned int end); +extern void L2_cache_block_invalidate(unsigned int start, unsigned int end); +extern void L2_cache_block_writeback(unsigned int start, unsigned int end); +extern void L2_cache_block_writeback_invalidate(unsigned int start, + unsigned int end); +extern void L2_cache_block_invalidate_nowait(unsigned int start, + unsigned int end); +extern void L2_cache_block_writeback_nowait(unsigned int start, + unsigned int end); + +extern void L2_cache_block_writeback_invalidate_nowait(unsigned int start, + unsigned int end); + +#endif /* _ASM_C6X_CACHE_H */ diff --git a/arch/c6x/include/asm/cacheflush.h b/arch/c6x/include/asm/cacheflush.h new file mode 100644 index 000000000000..df5db90dbe56 --- /dev/null +++ b/arch/c6x/include/asm/cacheflush.h @@ -0,0 +1,65 @@ +/* + * Port on Texas Instruments TMS320C6x architecture + * + * Copyright (C) 2004, 2009, 2010 Texas Instruments Incorporated + * Author: Aurelien Jacquiot (aurelien.jacquiot@jaluna.com) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#ifndef _ASM_C6X_CACHEFLUSH_H +#define _ASM_C6X_CACHEFLUSH_H + +#include <linux/spinlock.h> + +#include <asm/setup.h> +#include <asm/cache.h> +#include <asm/mman.h> +#include <asm/page.h> +#include <asm/string.h> + +/* + * virtually-indexed cache management (our cache is physically indexed) + */ +#define flush_cache_all() do {} while (0) +#define flush_cache_mm(mm) do {} while (0) +#define flush_cache_dup_mm(mm) do {} while (0) +#define flush_cache_range(mm, start, end) do {} while (0) +#define flush_cache_page(vma, vmaddr, pfn) do {} while (0) +#define flush_cache_vmap(start, end) do {} while (0) +#define flush_cache_vunmap(start, end) do {} while (0) +#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0 +#define flush_dcache_page(page) do {} while (0) +#define flush_dcache_mmap_lock(mapping) do {} while (0) +#define flush_dcache_mmap_unlock(mapping) do {} while (0) + +/* + * physically-indexed cache management + */ +#define flush_icache_range(s, e) \ +do { \ + L1D_cache_block_writeback((s), (e)); \ + L1P_cache_block_invalidate((s), (e)); \ +} while (0) + +#define flush_icache_page(vma, page) \ +do { \ + if ((vma)->vm_flags & PROT_EXEC) \ + L1D_cache_block_writeback_invalidate(page_address(page), \ + (unsigned long) page_address(page) + PAGE_SIZE)); \ + L1P_cache_block_invalidate(page_address(page), \ + (unsigned long) page_address(page) + PAGE_SIZE)); \ +} while (0) + + +#define copy_to_user_page(vma, page, vaddr, dst, src, len) \ +do { \ + memcpy(dst, src, len); \ + flush_icache_range((unsigned) (dst), (unsigned) (dst) + (len)); \ +} while (0) + +#define copy_from_user_page(vma, page, vaddr, dst, src, len) \ + memcpy(dst, src, len) + +#endif /* _ASM_C6X_CACHEFLUSH_H */ |