powerpc/64s: Move dcbt/dcbtst sequence into a macro

[sfrench/cifs-2.6.git] / arch / powerpc / include / asm / ppc_asm.h

diff --git a/arch/powerpc/include/asm/ppc_asm.h b/arch/powerpc/include/asm/ppc_asm.h
index 041ee25955205744854618cbdfd9fdf1c199f7ca..78c7548eac1e1974f4b91c4dac726fea132c5bc1 100644 (file)
--- a/arch/powerpc/include/asm/ppc_asm.h
+++ b/arch/powerpc/include/asm/ppc_asm.h
@@ -510,6 +510,18 @@ END_FTR_SECTION_NESTED(CPU_FTR_CELL_TB_BUG, CPU_FTR_CELL_TB_BUG, 96)
        lis     scratch,0x60000000@h;                   \
        dcbt    0,scratch,0b01010
 
+#define DCBT_SETUP_STREAMS(from, from_parms, to, to_parms, scratch)    \
+       lis     scratch,0x8000; /* GO=1 */                              \
+       clrldi  scratch,scratch,32;                                     \
+       /* setup read stream 0 */                                       \
+       dcbt    0,from,0b01000;         /* addr from */                 \
+       dcbt    0,from_parms,0b01010;   /* length and depth from */     \
+       /* setup write stream 1 */                                      \
+       dcbtst  0,to,0b01000;           /* addr to */                   \
+       dcbtst  0,to_parms,0b01010;     /* length and depth to */       \
+       eieio;                                                          \
+       dcbt    0,scratch,0b01010;      /* all streams GO */
+
 /*
  * toreal/fromreal/tophys/tovirt macros. 32-bit BookE makes them
  * keep the address intact to be compatible with code shared with