Merge branch 'stable-3.2' into pandora-3.2

[pandora-kernel.git] / arch / mips / mm / page-funcs.S

diff --git a/arch/mips/mm/page-funcs.S b/arch/mips/mm/page-funcs.S
new file mode 100644 (file)
index 0000000..48a6b38
--- /dev/null
+++ b/arch/mips/mm/page-funcs.S
@@ -0,0 +1,50 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Micro-assembler generated clear_page/copy_page functions.
+ *
+ * Copyright (C) 2012  MIPS Technologies, Inc.
+ * Copyright (C) 2012  Ralf Baechle <ralf@linux-mips.org>
+ */
+#include <asm/asm.h>
+#include <asm/regdef.h>
+
+#ifdef CONFIG_SIBYTE_DMA_PAGEOPS
+#define cpu_clear_page_function_name   clear_page_cpu
+#define cpu_copy_page_function_name    copy_page_cpu
+#else
+#define cpu_clear_page_function_name   clear_page
+#define cpu_copy_page_function_name    copy_page
+#endif
+
+/*
+ * Maximum sizes:
+ *
+ * R4000 128 bytes S-cache:            0x058 bytes
+ * R4600 v1.7:                         0x05c bytes
+ * R4600 v2.0:                         0x060 bytes
+ * With prefetching, 16 word strides   0x120 bytes
+ */
+EXPORT(__clear_page_start)
+LEAF(cpu_clear_page_function_name)
+1:     j       1b              /* Dummy, will be replaced. */
+       .space 288
+END(cpu_clear_page_function_name)
+EXPORT(__clear_page_end)
+
+/*
+ * Maximum sizes:
+ *
+ * R4000 128 bytes S-cache:            0x11c bytes
+ * R4600 v1.7:                         0x080 bytes
+ * R4600 v2.0:                         0x07c bytes
+ * With prefetching, 16 word strides   0x540 bytes
+ */
+EXPORT(__copy_page_start)
+LEAF(cpu_copy_page_function_name)
+1:     j       1b              /* Dummy, will be replaced. */
+       .space 1344
+END(cpu_copy_page_function_name)
+EXPORT(__copy_page_end)