1 files changed, 107 insertions, 0 deletions
diff --git a/libc/kernel/arch-arm/asm/cacheflush.h b/libc/kernel/arch-arm/asm/cacheflush.h
new file mode 100644
index 0000000..3ffa87a
--- /dev/null
+++ b/libc/kernel/arch-arm/asm/cacheflush.h
@@ -0,0 +1,107 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   This header was automatically generated from a Linux kernel header
+ ***   of the same name, to make information necessary for userspace to
+ ***   call into the kernel available to libc.  It contains only constants,
+ ***   structures, and macros generated from the original header, and thus,
+ ***   contains no copyrightable information.
+ ***
+ ****************************************************************************
+ ****************************************************************************/
+#ifndef _ASMARM_CACHEFLUSH_H
+#define _ASMARM_CACHEFLUSH_H
+
+#include <linux/sched.h>
+#include <linux/mm.h>
+
+#include <asm/glue.h>
+#include <asm/shmparam.h>
+
+#define CACHE_COLOUR(vaddr) ((vaddr & (SHMLBA - 1)) >> PAGE_SHIFT)
+
+#undef _CACHE
+#undef MULTI_CACHE
+
+#if !defined(_CACHE) && !defined(MULTI_CACHE)
+#error Unknown cache maintainence model
+#endif
+
+#define PG_dcache_dirty PG_arch_1
+
+struct cpu_cache_fns {
+ void (*flush_kern_all)(void);
+ void (*flush_user_all)(void);
+ void (*flush_user_range)(unsigned long, unsigned long, unsigned int);
+
+ void (*coherent_kern_range)(unsigned long, unsigned long);
+ void (*coherent_user_range)(unsigned long, unsigned long);
+ void (*flush_kern_dcache_page)(void *);
+
+ void (*dma_inv_range)(unsigned long, unsigned long);
+ void (*dma_clean_range)(unsigned long, unsigned long);
+ void (*dma_flush_range)(unsigned long, unsigned long);
+};
+
+#ifdef MULTI_CACHE
+
+#define __cpuc_flush_kern_all cpu_cache.flush_kern_all
+#define __cpuc_flush_user_all cpu_cache.flush_user_all
+#define __cpuc_flush_user_range cpu_cache.flush_user_range
+#define __cpuc_coherent_kern_range cpu_cache.coherent_kern_range
+#define __cpuc_coherent_user_range cpu_cache.coherent_user_range
+#define __cpuc_flush_dcache_page cpu_cache.flush_kern_dcache_page
+
+#define dmac_inv_range cpu_cache.dma_inv_range
+#define dmac_clean_range cpu_cache.dma_clean_range
+#define dmac_flush_range cpu_cache.dma_flush_range
+
+#else
+
+#define __cpuc_flush_kern_all __glue(_CACHE,_flush_kern_cache_all)
+#define __cpuc_flush_user_all __glue(_CACHE,_flush_user_cache_all)
+#define __cpuc_flush_user_range __glue(_CACHE,_flush_user_cache_range)
+#define __cpuc_coherent_kern_range __glue(_CACHE,_coherent_kern_range)
+#define __cpuc_coherent_user_range __glue(_CACHE,_coherent_user_range)
+#define __cpuc_flush_dcache_page __glue(_CACHE,_flush_kern_dcache_page)
+
+#define dmac_inv_range __glue(_CACHE,_dma_inv_range)
+#define dmac_clean_range __glue(_CACHE,_dma_clean_range)
+#define dmac_flush_range __glue(_CACHE,_dma_flush_range)
+
+#endif
+
+#define flush_cache_vmap(start, end) flush_cache_all()
+#define flush_cache_vunmap(start, end) flush_cache_all()
+
+#define copy_to_user_page(vma, page, vaddr, dst, src, len)   do {   memcpy(dst, src, len);   flush_ptrace_access(vma, page, vaddr, dst, len, 1);  } while (0)
+
+#define copy_from_user_page(vma, page, vaddr, dst, src, len)   do {   memcpy(dst, src, len);   } while (0)
+
+#define flush_cache_all() __cpuc_flush_kern_all()
+#define flush_cache_user_range(vma,start,end)   __cpuc_coherent_user_range((start) & PAGE_MASK, PAGE_ALIGN(end))
+#define flush_icache_range(s,e) __cpuc_coherent_kern_range(s,e)
+#define clean_dcache_area(start,size) cpu_dcache_clean_area(start, size)
+
+#define flush_dcache_mmap_lock(mapping)   write_lock_irq(&(mapping)->tree_lock)
+#define flush_dcache_mmap_unlock(mapping)   write_unlock_irq(&(mapping)->tree_lock)
+
+#define flush_icache_user_range(vma,page,addr,len)   flush_dcache_page(page)
+
+#define flush_icache_page(vma,page) do { } while (0)
+
+#define __cacheid_present(val) (val != read_cpuid(CPUID_ID))
+#define __cacheid_vivt(val) ((val & (15 << 25)) != (14 << 25))
+#define __cacheid_vipt(val) ((val & (15 << 25)) == (14 << 25))
+#define __cacheid_vipt_nonaliasing(val) ((val & (15 << 25 | 1 << 23)) == (14 << 25))
+#define __cacheid_vipt_aliasing(val) ((val & (15 << 25 | 1 << 23)) == (14 << 25 | 1 << 23))
+
+#define cache_is_vivt()   ({   unsigned int __val = read_cpuid(CPUID_CACHETYPE);   (!__cacheid_present(__val)) || __cacheid_vivt(__val);   })
+
+#define cache_is_vipt()   ({   unsigned int __val = read_cpuid(CPUID_CACHETYPE);   __cacheid_present(__val) && __cacheid_vipt(__val);   })
+
+#define cache_is_vipt_nonaliasing()   ({   unsigned int __val = read_cpuid(CPUID_CACHETYPE);   __cacheid_present(__val) &&   __cacheid_vipt_nonaliasing(__val);   })
+
+#define cache_is_vipt_aliasing()   ({   unsigned int __val = read_cpuid(CPUID_CACHETYPE);   __cacheid_present(__val) &&   __cacheid_vipt_aliasing(__val);   })
+
+#endif