From e2b31f75406ed4ae700f5d954603f8119d9e94ca Mon Sep 17 00:00:00 2001
From: Max Filippov <jcmvbkbc@gmail.com>
Date: Wed, 7 Oct 2015 07:58:07 +0300
Subject: Revert "xtensa: cache inquiry and unaligned cache handling functions"

Drop unaligned dcache management functions as they are no longer used.
This reverts commit bd974240c9a7 ("xtensa: cache inquiry and
unaligned cache handling functions").

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
---
 arch/xtensa/include/asm/cacheflush.h | 95 ------------------------------------
 1 file changed, 95 deletions(-)

(limited to 'arch')

diff --git a/arch/xtensa/include/asm/cacheflush.h b/arch/xtensa/include/asm/cacheflush.h
index 5f67ace97b32..7158881771ac 100644
--- a/arch/xtensa/include/asm/cacheflush.h
+++ b/arch/xtensa/include/asm/cacheflush.h
@@ -174,99 +174,4 @@ extern void copy_from_user_page(struct vm_area_struct*, struct page*,
 
 #endif
 
-#define XTENSA_CACHEBLK_LOG2	29
-#define XTENSA_CACHEBLK_SIZE	(1 << XTENSA_CACHEBLK_LOG2)
-#define XTENSA_CACHEBLK_MASK	(7 << XTENSA_CACHEBLK_LOG2)
-
-#if XCHAL_HAVE_CACHEATTR
-static inline u32 xtensa_get_cacheattr(void)
-{
-	u32 r;
-	asm volatile("	rsr %0, cacheattr" : "=a"(r));
-	return r;
-}
-
-static inline u32 xtensa_get_dtlb1(u32 addr)
-{
-	u32 r = addr & XTENSA_CACHEBLK_MASK;
-	return r | ((xtensa_get_cacheattr() >> (r >> (XTENSA_CACHEBLK_LOG2-2)))
-			& 0xF);
-}
-#else
-static inline u32 xtensa_get_dtlb1(u32 addr)
-{
-	u32 r;
-	asm volatile("	rdtlb1 %0, %1" : "=a"(r) : "a"(addr));
-	asm volatile("	dsync");
-	return r;
-}
-
-static inline u32 xtensa_get_cacheattr(void)
-{
-	u32 r = 0;
-	u32 a = 0;
-	do {
-		a -= XTENSA_CACHEBLK_SIZE;
-		r = (r << 4) | (xtensa_get_dtlb1(a) & 0xF);
-	} while (a);
-	return r;
-}
-#endif
-
-static inline int xtensa_need_flush_dma_source(u32 addr)
-{
-	return (xtensa_get_dtlb1(addr) & ((1 << XCHAL_CA_BITS) - 1)) >= 4;
-}
-
-static inline int xtensa_need_invalidate_dma_destination(u32 addr)
-{
-	return (xtensa_get_dtlb1(addr) & ((1 << XCHAL_CA_BITS) - 1)) != 2;
-}
-
-static inline void flush_dcache_unaligned(u32 addr, u32 size)
-{
-	u32 cnt;
-	if (size) {
-		cnt = (size + ((XCHAL_DCACHE_LINESIZE - 1) & addr)
-			+ XCHAL_DCACHE_LINESIZE - 1) / XCHAL_DCACHE_LINESIZE;
-		while (cnt--) {
-			asm volatile("	dhwb %0, 0" : : "a"(addr));
-			addr += XCHAL_DCACHE_LINESIZE;
-		}
-		asm volatile("	dsync");
-	}
-}
-
-static inline void invalidate_dcache_unaligned(u32 addr, u32 size)
-{
-	int cnt;
-	if (size) {
-		asm volatile("	dhwbi %0, 0 ;" : : "a"(addr));
-		cnt = (size + ((XCHAL_DCACHE_LINESIZE - 1) & addr)
-			- XCHAL_DCACHE_LINESIZE - 1) / XCHAL_DCACHE_LINESIZE;
-		while (cnt-- > 0) {
-			asm volatile("	dhi %0, %1" : : "a"(addr),
-						"n"(XCHAL_DCACHE_LINESIZE));
-			addr += XCHAL_DCACHE_LINESIZE;
-		}
-		asm volatile("	dhwbi %0, %1" : : "a"(addr),
-						"n"(XCHAL_DCACHE_LINESIZE));
-		asm volatile("	dsync");
-	}
-}
-
-static inline void flush_invalidate_dcache_unaligned(u32 addr, u32 size)
-{
-	u32 cnt;
-	if (size) {
-		cnt = (size + ((XCHAL_DCACHE_LINESIZE - 1) & addr)
-			+ XCHAL_DCACHE_LINESIZE - 1) / XCHAL_DCACHE_LINESIZE;
-		while (cnt--) {
-			asm volatile("	dhwbi %0, 0" : : "a"(addr));
-			addr += XCHAL_DCACHE_LINESIZE;
-		}
-		asm volatile("	dsync");
-	}
-}
-
 #endif /* _XTENSA_CACHEFLUSH_H */
-- 
cgit