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authorMike Frysinger <vapier@gentoo.org>2009-04-10 21:20:19 +0000
committerMike Frysinger <vapier@gentoo.org>2009-06-12 06:03:48 -0400
commit78f28a0a83a86dfe021f7d8169208b9af2a23201 (patch)
tree8a97b224bdefba3c0ea057d8f5aa0af25760067a /arch
parentf8b556514c4481a500ace4745731f04a77c08d54 (diff)
Blackfin: simplify the do_flush macro
Simplify the do_flush macro now that we don't need to take into account a second instruction being used together. Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Bryan Wu <cooloney@kernel.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/blackfin/mach-common/cache.S30
1 files changed, 15 insertions, 15 deletions
diff --git a/arch/blackfin/mach-common/cache.S b/arch/blackfin/mach-common/cache.S
index c295e8f837c..d9666fe6c3d 100644
--- a/arch/blackfin/mach-common/cache.S
+++ b/arch/blackfin/mach-common/cache.S
@@ -15,6 +15,13 @@
.text
+/* 05000443 - IFLUSH cannot be last instruction in hardware loop */
+#if ANOMALY_05000443
+# define BROK_FLUSH_INST "IFLUSH"
+#else
+# define BROK_FLUSH_INST "no anomaly! yeah!"
+#endif
+
/* Since all L1 caches work the same way, we use the same method for flushing
* them. Only the actual flush instruction differs. We write this in asm as
* GCC can be hard to coax into writing nice hardware loops.
@@ -23,7 +30,7 @@
* R0 = start address
* R1 = end address
*/
-.macro do_flush flushins:req optflushins optnopins label
+.macro do_flush flushins:req label
R2 = -L1_CACHE_BYTES;
@@ -44,22 +51,15 @@
\label :
.endif
P0 = R0;
+
LSETUP (1f, 2f) LC1 = P1;
1:
-.ifnb \optflushins
- \optflushins [P0];
-.endif
-#if ANOMALY_05000443
-.ifb \optnopins
-2:
-.endif
+.ifeqs "\flushins", BROK_FLUSH_INST
\flushins [P0++];
-.ifnb \optnopins
-2: \optnopins;
-.endif
-#else
+2: nop;
+.else
2: \flushins [P0++];
-#endif
+.endif
RTS;
.endm
@@ -77,7 +77,7 @@ ENTRY(_blackfin_icache_flush_range)
*/
P0 = R0;
IFLUSH[P0];
- do_flush IFLUSH, , nop
+ do_flush IFLUSH
ENDPROC(_blackfin_icache_flush_range)
/* Throw away all D-cached data in specified region without any obligation to
@@ -91,7 +91,7 @@ ENDPROC(_blackfin_dcache_invalidate_range)
/* Flush all data cache lines assocoiated with this memory area */
ENTRY(_blackfin_dcache_flush_range)
- do_flush FLUSH, , , .Ldfr
+ do_flush FLUSH, .Ldfr
ENDPROC(_blackfin_dcache_flush_range)
/* Our headers convert the page structure to an address, so just need to flush