powerpc: Remove unused flush_dcache_phys_range()

The flush_dcache_phys_range() function is no longer used in the
kernel. The last usage was removed in c40785ad305b ("powerpc/dart: Use
a cachable DART").

This patch removes the function and declaration.

Signed-off-by: Matt Brown <matthew.brown.dev@gmail.com>
[mpe: Munge change log, include commit that removed last user]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

diff --git a/arch/powerpc/include/asm/cacheflush.h b/arch/powerpc/include/asm/cacheflush.h
index b77f0364df94059982c709403d9d5ba3affd0b9c..11843e37d9cf92622bf5b62c30c4637afcf88370 100644 (file)
--- a/arch/powerpc/include/asm/cacheflush.h
+++ b/arch/powerpc/include/asm/cacheflush.h
@@ -99,7 +99,6 @@ static inline void invalidate_dcache_range(unsigned long start,
 #ifdef CONFIG_PPC64
 extern void flush_dcache_range(unsigned long start, unsigned long stop);
 extern void flush_inval_dcache_range(unsigned long start, unsigned long stop);
-extern void flush_dcache_phys_range(unsigned long start, unsigned long stop);
 #endif
 
 #define copy_to_user_page(vma, page, vaddr, dst, src, len) \

diff --git a/arch/powerpc/kernel/misc_64.S b/arch/powerpc/kernel/misc_64.S
index 3280953a82cf63c4372735762a09804fd9c21677..fa267e94090ac29080b6af8ad32906acd1a3787f 100644 (file)
--- a/arch/powerpc/kernel/misc_64.S
+++ b/arch/powerpc/kernel/misc_64.S
@@ -144,44 +144,6 @@ _GLOBAL_TOC(flush_dcache_range)
        blr
 EXPORT_SYMBOL(flush_dcache_range)
 
-/*
- * Like above, but works on non-mapped physical addresses.
- * Use only for non-LPAR setups ! It also assumes real mode
- * is cacheable. Used for flushing out the DART before using
- * it as uncacheable memory 
- *
- * flush_dcache_phys_range(unsigned long start, unsigned long stop)
- *
- *    flush all bytes from start to stop-1 inclusive
- */
-_GLOBAL(flush_dcache_phys_range)
-       ld      r10,PPC64_CACHES@toc(r2)
-       lwz     r7,DCACHEL1BLOCKSIZE(r10)       /* Get dcache block size */
-       addi    r5,r7,-1
-       andc    r6,r3,r5                /* round low to line bdy */
-       subf    r8,r6,r4                /* compute length */
-       add     r8,r8,r5                /* ensure we get enough */
-       lwz     r9,DCACHEL1LOGBLOCKSIZE(r10)    /* Get log-2 of dcache block size */
-       srw.    r8,r8,r9                /* compute line count */
-       beqlr                           /* nothing to do? */
-       mfmsr   r5                      /* Disable MMU Data Relocation */
-       ori     r0,r5,MSR_DR
-       xori    r0,r0,MSR_DR
-       sync
-       mtmsr   r0
-       sync
-       isync
-       mtctr   r8
-0:     dcbst   0,r6
-       add     r6,r6,r7
-       bdnz    0b
-       sync
-       isync
-       mtmsr   r5                      /* Re-enable MMU Data Relocation */
-       sync
-       isync
-       blr
-
 _GLOBAL(flush_inval_dcache_range)
        ld      r10,PPC64_CACHES@toc(r2)
        lwz     r7,DCACHEL1BLOCKSIZE(r10)       /* Get dcache block size */