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/***********************license start***************
* Copyright (c) 2003-2010 Cavium Inc. (support@cavium.com). All rights
* reserved.
*
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* * Neither the name of Cavium Inc. nor the names of
* its contributors may be used to endorse or promote products
* derived from this software without specific prior written
* permission.
* This Software, including technical data, may be subject to U.S. export control
* laws, including the U.S. Export Administration Act and its associated
* regulations, and may be subject to export or import regulations in other
* countries.
* TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS"
* AND WITH ALL FAULTS AND CAVIUM INC. MAKES NO PROMISES, REPRESENTATIONS OR
* WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH RESPECT TO
* THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY REPRESENTATION OR
* DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT DEFECTS, AND CAVIUM
* SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES OF TITLE,
* MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A PARTICULAR PURPOSE, LACK OF
* VIRUSES, ACCURACY OR COMPLETENESS, QUIET ENJOYMENT, QUIET POSSESSION OR
* CORRESPONDENCE TO DESCRIPTION. THE ENTIRE RISK ARISING OUT OF USE OR
* PERFORMANCE OF THE SOFTWARE LIES WITH YOU.
***********************license end**************************************/
/**
* @file
*
* Interface to the on chip key memory. Key memory is
* 8k on chip that is inaccessible from off chip. It can
* also be cleared using an external hardware pin.
*
* <hr>$Revision: 70030 $<hr>
*
*/
#ifndef __CVMX_KEY_H__
#define __CVMX_KEY_H__
#ifdef __cplusplus
extern "C" {
#endif
#define CVMX_KEY_MEM_SIZE 8192 /* Size in bytes */
/**
* Read from KEY memory
*
* @param address Address (byte) in key memory to read
* 0 <= address < CVMX_KEY_MEM_SIZE
* @return Value from key memory
*/
static inline uint64_t cvmx_key_read(uint64_t address)
{
cvmx_addr_t ptr;
ptr.u64 = 0;
ptr.sio.mem_region = CVMX_IO_SEG;
ptr.sio.is_io = 1;
ptr.sio.did = CVMX_OCT_DID_KEY_RW;
ptr.sio.offset = address;
return cvmx_read_csr(ptr.u64);
}
/**
* Write to KEY memory
*
* @param address Address (byte) in key memory to write
* 0 <= address < CVMX_KEY_MEM_SIZE
* @param value Value to write to key memory
*/
static inline void cvmx_key_write(uint64_t address, uint64_t value)
{
cvmx_addr_t ptr;
ptr.u64 = 0;
ptr.sio.mem_region = CVMX_IO_SEG;
ptr.sio.is_io = 1;
ptr.sio.did = CVMX_OCT_DID_KEY_RW;
ptr.sio.offset = address;
cvmx_write_io(ptr.u64, value);
}
/* CSR typedefs have been moved to cvmx-key-defs.h */
#ifdef __cplusplus
}
#endif
#endif /* __CVMX_KEY_H__ */
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