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-rw-r--r--arch/mips/include/asm/r4kcache.h152
1 files changed, 151 insertions, 1 deletions
diff --git a/arch/mips/include/asm/r4kcache.h b/arch/mips/include/asm/r4kcache.h
index cac279c65601..69c2ada7d4aa 100644
--- a/arch/mips/include/asm/r4kcache.h
+++ b/arch/mips/include/asm/r4kcache.h
@@ -17,6 +17,7 @@
#include <asm/cpu-features.h>
#include <asm/cpu-type.h>
#include <asm/mipsmtregs.h>
+#include <asm/uaccess.h> /* for segment_eq() */
/*
* This macro return a properly sign-extended address suitable as base address
@@ -374,6 +375,91 @@ static inline void invalidate_tcache_page(unsigned long addr)
: "r" (base), \
"i" (op));
+/*
+ * Perform the cache operation specified by op using a user mode virtual
+ * address while in kernel mode.
+ */
+#define cache16_unroll32_user(base,op) \
+ __asm__ __volatile__( \
+ " .set push \n" \
+ " .set noreorder \n" \
+ " .set mips0 \n" \
+ " .set eva \n" \
+ " cachee %1, 0x000(%0); cachee %1, 0x010(%0) \n" \
+ " cachee %1, 0x020(%0); cachee %1, 0x030(%0) \n" \
+ " cachee %1, 0x040(%0); cachee %1, 0x050(%0) \n" \
+ " cachee %1, 0x060(%0); cachee %1, 0x070(%0) \n" \
+ " cachee %1, 0x080(%0); cachee %1, 0x090(%0) \n" \
+ " cachee %1, 0x0a0(%0); cachee %1, 0x0b0(%0) \n" \
+ " cachee %1, 0x0c0(%0); cachee %1, 0x0d0(%0) \n" \
+ " cachee %1, 0x0e0(%0); cachee %1, 0x0f0(%0) \n" \
+ " cachee %1, 0x100(%0); cachee %1, 0x110(%0) \n" \
+ " cachee %1, 0x120(%0); cachee %1, 0x130(%0) \n" \
+ " cachee %1, 0x140(%0); cachee %1, 0x150(%0) \n" \
+ " cachee %1, 0x160(%0); cachee %1, 0x170(%0) \n" \
+ " cachee %1, 0x180(%0); cachee %1, 0x190(%0) \n" \
+ " cachee %1, 0x1a0(%0); cachee %1, 0x1b0(%0) \n" \
+ " cachee %1, 0x1c0(%0); cachee %1, 0x1d0(%0) \n" \
+ " cachee %1, 0x1e0(%0); cachee %1, 0x1f0(%0) \n" \
+ " .set pop \n" \
+ : \
+ : "r" (base), \
+ "i" (op));
+
+#define cache32_unroll32_user(base, op) \
+ __asm__ __volatile__( \
+ " .set push \n" \
+ " .set noreorder \n" \
+ " .set mips0 \n" \
+ " .set eva \n" \
+ " cachee %1, 0x000(%0); cachee %1, 0x020(%0) \n" \
+ " cachee %1, 0x040(%0); cachee %1, 0x060(%0) \n" \
+ " cachee %1, 0x080(%0); cachee %1, 0x0a0(%0) \n" \
+ " cachee %1, 0x0c0(%0); cachee %1, 0x0e0(%0) \n" \
+ " cachee %1, 0x100(%0); cachee %1, 0x120(%0) \n" \
+ " cachee %1, 0x140(%0); cachee %1, 0x160(%0) \n" \
+ " cachee %1, 0x180(%0); cachee %1, 0x1a0(%0) \n" \
+ " cachee %1, 0x1c0(%0); cachee %1, 0x1e0(%0) \n" \
+ " cachee %1, 0x200(%0); cachee %1, 0x220(%0) \n" \
+ " cachee %1, 0x240(%0); cachee %1, 0x260(%0) \n" \
+ " cachee %1, 0x280(%0); cachee %1, 0x2a0(%0) \n" \
+ " cachee %1, 0x2c0(%0); cachee %1, 0x2e0(%0) \n" \
+ " cachee %1, 0x300(%0); cachee %1, 0x320(%0) \n" \
+ " cachee %1, 0x340(%0); cachee %1, 0x360(%0) \n" \
+ " cachee %1, 0x380(%0); cachee %1, 0x3a0(%0) \n" \
+ " cachee %1, 0x3c0(%0); cachee %1, 0x3e0(%0) \n" \
+ " .set pop \n" \
+ : \
+ : "r" (base), \
+ "i" (op));
+
+#define cache64_unroll32_user(base, op) \
+ __asm__ __volatile__( \
+ " .set push \n" \
+ " .set noreorder \n" \
+ " .set mips0 \n" \
+ " .set eva \n" \
+ " cachee %1, 0x000(%0); cachee %1, 0x040(%0) \n" \
+ " cachee %1, 0x080(%0); cachee %1, 0x0c0(%0) \n" \
+ " cachee %1, 0x100(%0); cachee %1, 0x140(%0) \n" \
+ " cachee %1, 0x180(%0); cachee %1, 0x1c0(%0) \n" \
+ " cachee %1, 0x200(%0); cachee %1, 0x240(%0) \n" \
+ " cachee %1, 0x280(%0); cachee %1, 0x2c0(%0) \n" \
+ " cachee %1, 0x300(%0); cachee %1, 0x340(%0) \n" \
+ " cachee %1, 0x380(%0); cachee %1, 0x3c0(%0) \n" \
+ " cachee %1, 0x400(%0); cachee %1, 0x440(%0) \n" \
+ " cachee %1, 0x480(%0); cachee %1, 0x4c0(%0) \n" \
+ " cachee %1, 0x500(%0); cachee %1, 0x540(%0) \n" \
+ " cachee %1, 0x580(%0); cachee %1, 0x5c0(%0) \n" \
+ " cachee %1, 0x600(%0); cachee %1, 0x640(%0) \n" \
+ " cachee %1, 0x680(%0); cachee %1, 0x6c0(%0) \n" \
+ " cachee %1, 0x700(%0); cachee %1, 0x740(%0) \n" \
+ " cachee %1, 0x780(%0); cachee %1, 0x7c0(%0) \n" \
+ " .set pop \n" \
+ : \
+ : "r" (base), \
+ "i" (op));
+
/* build blast_xxx, blast_xxx_page, blast_xxx_page_indexed */
#define __BUILD_BLAST_CACHE(pfx, desc, indexop, hitop, lsize, extra) \
static inline void extra##blast_##pfx##cache##lsize(void) \
@@ -447,6 +533,32 @@ __BUILD_BLAST_CACHE(inv_s, scache, Index_Writeback_Inv_SD, Hit_Invalidate_SD, 32
__BUILD_BLAST_CACHE(inv_s, scache, Index_Writeback_Inv_SD, Hit_Invalidate_SD, 64, )
__BUILD_BLAST_CACHE(inv_s, scache, Index_Writeback_Inv_SD, Hit_Invalidate_SD, 128, )
+#define __BUILD_BLAST_USER_CACHE(pfx, desc, indexop, hitop, lsize) \
+static inline void blast_##pfx##cache##lsize##_user_page(unsigned long page) \
+{ \
+ unsigned long start = page; \
+ unsigned long end = page + PAGE_SIZE; \
+ \
+ __##pfx##flush_prologue \
+ \
+ do { \
+ cache##lsize##_unroll32_user(start, hitop); \
+ start += lsize * 32; \
+ } while (start < end); \
+ \
+ __##pfx##flush_epilogue \
+}
+
+__BUILD_BLAST_USER_CACHE(d, dcache, Index_Writeback_Inv_D, Hit_Writeback_Inv_D,
+ 16)
+__BUILD_BLAST_USER_CACHE(i, icache, Index_Invalidate_I, Hit_Invalidate_I, 16)
+__BUILD_BLAST_USER_CACHE(d, dcache, Index_Writeback_Inv_D, Hit_Writeback_Inv_D,
+ 32)
+__BUILD_BLAST_USER_CACHE(i, icache, Index_Invalidate_I, Hit_Invalidate_I, 32)
+__BUILD_BLAST_USER_CACHE(d, dcache, Index_Writeback_Inv_D, Hit_Writeback_Inv_D,
+ 64)
+__BUILD_BLAST_USER_CACHE(i, icache, Index_Invalidate_I, Hit_Invalidate_I, 64)
+
/* build blast_xxx_range, protected_blast_xxx_range */
#define __BUILD_BLAST_CACHE_RANGE(pfx, desc, hitop, prot, extra) \
static inline void prot##extra##blast_##pfx##cache##_range(unsigned long start, \
@@ -468,9 +580,47 @@ static inline void prot##extra##blast_##pfx##cache##_range(unsigned long start,
__##pfx##flush_epilogue \
}
+#ifndef CONFIG_EVA
+
__BUILD_BLAST_CACHE_RANGE(d, dcache, Hit_Writeback_Inv_D, protected_, )
-__BUILD_BLAST_CACHE_RANGE(s, scache, Hit_Writeback_Inv_SD, protected_, )
__BUILD_BLAST_CACHE_RANGE(i, icache, Hit_Invalidate_I, protected_, )
+
+#else
+
+#define __BUILD_PROT_BLAST_CACHE_RANGE(pfx, desc, hitop) \
+static inline void protected_blast_##pfx##cache##_range(unsigned long start,\
+ unsigned long end) \
+{ \
+ unsigned long lsize = cpu_##desc##_line_size(); \
+ unsigned long addr = start & ~(lsize - 1); \
+ unsigned long aend = (end - 1) & ~(lsize - 1); \
+ \
+ __##pfx##flush_prologue \
+ \
+ if (segment_eq(get_fs(), USER_DS)) { \
+ while (1) { \
+ protected_cachee_op(hitop, addr); \
+ if (addr == aend) \
+ break; \
+ addr += lsize; \
+ } \
+ } else { \
+ while (1) { \
+ protected_cache_op(hitop, addr); \
+ if (addr == aend) \
+ break; \
+ addr += lsize; \
+ } \
+ \
+ } \
+ __##pfx##flush_epilogue \
+}
+
+__BUILD_PROT_BLAST_CACHE_RANGE(d, dcache, Hit_Writeback_Inv_D)
+__BUILD_PROT_BLAST_CACHE_RANGE(i, icache, Hit_Invalidate_I)
+
+#endif
+__BUILD_BLAST_CACHE_RANGE(s, scache, Hit_Writeback_Inv_SD, protected_, )
__BUILD_BLAST_CACHE_RANGE(i, icache, Hit_Invalidate_I_Loongson2, \
protected_, loongson2_)
__BUILD_BLAST_CACHE_RANGE(d, dcache, Hit_Writeback_Inv_D, , )
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-12 17:33:10 +0000