1 files changed, 139 insertions, 0 deletions
diff --git a/arch/mips/include/asm/octeon/cvmx-scratch.h b/arch/mips/include/asm/octeon/cvmx-scratch.h
new file mode 100644
index 000000000..8d21cc5e4
--- /dev/null
+++ b/arch/mips/include/asm/octeon/cvmx-scratch.h
@@ -0,0 +1,139 @@
+/***********************license start***************
+ * Author: Cavium Networks
+ *
+ * Contact: support@caviumnetworks.com
+ * This file is part of the OCTEON SDK
+ *
+ * Copyright (c) 2003-2008 Cavium Networks
+ *
+ * This file is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, Version 2, as
+ * published by the Free Software Foundation.
+ *
+ * This file is distributed in the hope that it will be useful, but
+ * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
+ * NONINFRINGEMENT.  See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this file; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ * or visit http://www.gnu.org/licenses/.
+ *
+ * This file may also be available under a different license from Cavium.
+ * Contact Cavium Networks for more information
+ ***********************license end**************************************/
+
+/**
+ *
+ * This file provides support for the processor local scratch memory.
+ * Scratch memory is byte addressable - all addresses are byte addresses.
+ *
+ */
+
+#ifndef __CVMX_SCRATCH_H__
+#define __CVMX_SCRATCH_H__
+
+/*
+ * Note: This define must be a long, not a long long in order to
+ * compile without warnings for both 32bit and 64bit.
+ */
+#define CVMX_SCRATCH_BASE	(-32768l)	/* 0xffffffffffff8000 */
+
+/**
+ * Reads an 8 bit value from the processor local scratchpad memory.
+ *
+ * @address: byte address to read from
+ *
+ * Returns value read
+ */
+static inline uint8_t cvmx_scratch_read8(uint64_t address)
+{
+	return *CASTPTR(volatile uint8_t, CVMX_SCRATCH_BASE + address);
+}
+
+/**
+ * Reads a 16 bit value from the processor local scratchpad memory.
+ *
+ * @address: byte address to read from
+ *
+ * Returns value read
+ */
+static inline uint16_t cvmx_scratch_read16(uint64_t address)
+{
+	return *CASTPTR(volatile uint16_t, CVMX_SCRATCH_BASE + address);
+}
+
+/**
+ * Reads a 32 bit value from the processor local scratchpad memory.
+ *
+ * @address: byte address to read from
+ *
+ * Returns value read
+ */
+static inline uint32_t cvmx_scratch_read32(uint64_t address)
+{
+	return *CASTPTR(volatile uint32_t, CVMX_SCRATCH_BASE + address);
+}
+
+/**
+ * Reads a 64 bit value from the processor local scratchpad memory.
+ *
+ * @address: byte address to read from
+ *
+ * Returns value read
+ */
+static inline uint64_t cvmx_scratch_read64(uint64_t address)
+{
+	return *CASTPTR(volatile uint64_t, CVMX_SCRATCH_BASE + address);
+}
+
+/**
+ * Writes an 8 bit value to the processor local scratchpad memory.
+ *
+ * @address: byte address to write to
+ * @value:   value to write
+ */
+static inline void cvmx_scratch_write8(uint64_t address, uint64_t value)
+{
+	*CASTPTR(volatile uint8_t, CVMX_SCRATCH_BASE + address) =
+	    (uint8_t) value;
+}
+
+/**
+ * Writes a 32 bit value to the processor local scratchpad memory.
+ *
+ * @address: byte address to write to
+ * @value:   value to write
+ */
+static inline void cvmx_scratch_write16(uint64_t address, uint64_t value)
+{
+	*CASTPTR(volatile uint16_t, CVMX_SCRATCH_BASE + address) =
+	    (uint16_t) value;
+}
+
+/**
+ * Writes a 16 bit value to the processor local scratchpad memory.
+ *
+ * @address: byte address to write to
+ * @value:   value to write
+ */
+static inline void cvmx_scratch_write32(uint64_t address, uint64_t value)
+{
+	*CASTPTR(volatile uint32_t, CVMX_SCRATCH_BASE + address) =
+	    (uint32_t) value;
+}
+
+/**
+ * Writes a 64 bit value to the processor local scratchpad memory.
+ *
+ * @address: byte address to write to
+ * @value:   value to write
+ */
+static inline void cvmx_scratch_write64(uint64_t address, uint64_t value)
+{
+	*CASTPTR(volatile uint64_t, CVMX_SCRATCH_BASE + address) = value;
+}
+
+#endif /* __CVMX_SCRATCH_H__ */