os/linux/include/core/IxOsalOs.h | 17 ++++++++++ os/linux/src/core/IxOsalOsCacheMMU.c | 56 +++++++++++++++++++++++++++++++++++ os/linux/src/core/IxOsalOsSymbols.c | 4 ++ 3 files changed, 76 insertions(+), 1 deletion(-) --- ixp_osal/os/linux/include/core/IxOsalOs.h 1970-01-01 00:00:00.000000000 +0000 +++ ixp_osal/os/linux/include/core/IxOsalOs.h 1970-01-01 00:00:00.000000000 +0000 @@ -56,6 +56,7 @@ #include <linux/cache.h> #include <linux/mm.h> #include <linux/config.h> +#include <linux/version.h> #include <asm/pgalloc.h> /** @@ -66,9 +67,23 @@ #define IX_OSAL_OS_MMU_PHYS_TO_VIRT(addr) ((addr) ? phys_to_virt((unsigned int)(addr)) : 0) -#define IX_OSAL_OS_CACHE_INVALIDATE(addr, size) ( invalidate_dcache_range((__u32)addr, (__u32)addr + size )) +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)) +/* + * 2.6 kernels do not export the required cache functions. + */ +extern void ixOsalCacheInvalidateRange(unsigned long start, unsigned long size); +extern void ixOsalCacheFlushRange(unsigned long start, unsigned long size); + +#define IX_OSAL_OS_CACHE_INVALIDATE(addr, size) \ +ixOsalCacheInvalidateRange((unsigned long)addr, (unsigned long)addr + size) +#define IX_OSAL_OS_CACHE_FLUSH(addr, size) \ +ixOsalCacheFlushRange((unsigned long)addr, (unsigned long)addr + size ) +#else + +#define IX_OSAL_OS_CACHE_INVALIDATE(addr, size) ( invalidate_dcache_range((__u32)addr, (__u32)addr + size )) #define IX_OSAL_OS_CACHE_FLUSH(addr, size) ( clean_dcache_range((__u32)addr, (__u32)addr + size )) +#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)) */ /* Cache preload not available*/ #define IX_OSAL_OS_CACHE_PRELOAD(addr,size) {} --- ixp_osal/os/linux/src/core/IxOsalOsCacheMMU.c 1970-01-01 00:00:00.000000000 +0000 +++ ixp_osal/os/linux/src/core/IxOsalOsCacheMMU.c 1970-01-01 00:00:00.000000000 +0000 @@ -210,3 +210,59 @@ ixOsalCacheDmaFree (void *ptr) free_pages ((unsigned int) memptr, order); } } + + +/* + * 2.6 kernels do not export the required cache functions. + */ +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)) + +#define _IX_STR(x) #x +#define IX_STR(x) _IX_STR(x) +#define IX_CLM IX_STR(IX_OSAL_CACHE_LINE_SIZE-1) + +/* + * reimplementation of kernel's invalidate_dcache_range() + */ +void +ixOsalCacheInvalidateRange(unsigned long start, unsigned long size) +{ + __asm__ + (" tst %0, #" IX_CLM "\n" + " mcrne p15, 0, %0, c7, c10, 1 @ clean D cache line\n" + " bic %0, %0, #" IX_CLM "\n" + " tst %1, #" IX_CLM "\n" + " mcrne p15, 0, %1, c7, c10, 1 @ clean D cache line\n" + "1: mcr p15, 0, %0, c7, c6, 1 @ invalidate D cache line\n" + " add %0, %0, #" IX_STR(IX_OSAL_CACHE_LINE_SIZE) "\n" + " cmp %0, %1\n" + " blo 1b\n" + " mcr p15, 0, %0, c7, c10, 4 @ drain write & fill buffer\n" + : /* no output */ + : "r"(start), "r"(size) + : "cc"); +} + +/* + * reimplementation of kernel's invalidate_dcache_range() + */ +void +ixOsalCacheFlushRange(unsigned long start, unsigned long size) +{ + __asm__ + (" bic %0, %0, #" IX_CLM "\n" + "1: mcr p15, 0, %0, c7, c10, 1 @ clean D cache line\n" + " add %0, %0, #" IX_STR(IX_OSAL_CACHE_LINE_SIZE) "\n" + " cmp %0, %1\n" + " blo 1b\n" + " mcr p15, 0, %0, c7, c10, 4 @ drain write & fill buffer\n" + : /* no output */ + : "r"(start), "r"(size) + : "cc"); +} + +#undef _IX_STR +#undef IX_STR +#undef IX_CLM + +#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)) */ --- ixp_osal/os/linux/src/core/IxOsalOsSymbols.c 1970-01-01 00:00:00.000000000 +0000 +++ ixp_osal/os/linux/src/core/IxOsalOsSymbols.c 1970-01-01 00:00:00.000000000 +0000 @@ -64,6 +64,10 @@ EXPORT_SYMBOL (ixOsalMemSet); EXPORT_SYMBOL (ixOsalCacheDmaMalloc); EXPORT_SYMBOL (ixOsalCacheDmaFree); +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)) +EXPORT_SYMBOL (ixOsalCacheInvalidateRange); +EXPORT_SYMBOL (ixOsalCacheFlushRange); +#endif EXPORT_SYMBOL (ixOsalThreadCreate); EXPORT_SYMBOL (ixOsalThreadStart);