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/***********************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__ */
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