1/***********************license start*************** 2 * Copyright (c) 2003-2010 Cavium Inc. (support@cavium.com). All rights 3 * reserved. 4 * 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions are 8 * met: 9 * 10 * * Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 13 * * Redistributions in binary form must reproduce the above 14 * copyright notice, this list of conditions and the following 15 * disclaimer in the documentation and/or other materials provided 16 * with the distribution. 17 18 * * Neither the name of Cavium Inc. nor the names of 19 * its contributors may be used to endorse or promote products 20 * derived from this software without specific prior written 21 * permission. 22 23 * This Software, including technical data, may be subject to U.S. export control 24 * laws, including the U.S. Export Administration Act and its associated 25 * regulations, and may be subject to export or import regulations in other 26 * countries. 27 28 * TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS" 29 * AND WITH ALL FAULTS AND CAVIUM INC. MAKES NO PROMISES, REPRESENTATIONS OR 30 * WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH RESPECT TO 31 * THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY REPRESENTATION OR 32 * DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT DEFECTS, AND CAVIUM 33 * SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES OF TITLE, 34 * MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A PARTICULAR PURPOSE, LACK OF 35 * VIRUSES, ACCURACY OR COMPLETENESS, QUIET ENJOYMENT, QUIET POSSESSION OR 36 * CORRESPONDENCE TO DESCRIPTION. THE ENTIRE RISK ARISING OUT OF USE OR 37 * PERFORMANCE OF THE SOFTWARE LIES WITH YOU. 38 ***********************license end**************************************/ 39 40 41 42 43 44 45 46/** 47 * @file 48 * 49 * Interface to the on chip key memory. Key memory is 50 * 8k on chip that is inaccessible from off chip. It can 51 * also be cleared using an external hardware pin. 52 * 53 * <hr>$Revision: 70030 $<hr> 54 * 55 */ 56 57#ifndef __CVMX_KEY_H__ 58#define __CVMX_KEY_H__ 59 60#ifdef __cplusplus 61extern "C" { 62#endif 63 64#define CVMX_KEY_MEM_SIZE 8192 /* Size in bytes */ 65 66 67/** 68 * Read from KEY memory 69 * 70 * @param address Address (byte) in key memory to read 71 * 0 <= address < CVMX_KEY_MEM_SIZE 72 * @return Value from key memory 73 */ 74static inline uint64_t cvmx_key_read(uint64_t address) 75{ 76 cvmx_addr_t ptr; 77 78 ptr.u64 = 0; 79 ptr.sio.mem_region = CVMX_IO_SEG; 80 ptr.sio.is_io = 1; 81 ptr.sio.did = CVMX_OCT_DID_KEY_RW; 82 ptr.sio.offset = address; 83 84 return cvmx_read_csr(ptr.u64); 85} 86 87 88/** 89 * Write to KEY memory 90 * 91 * @param address Address (byte) in key memory to write 92 * 0 <= address < CVMX_KEY_MEM_SIZE 93 * @param value Value to write to key memory 94 */ 95static inline void cvmx_key_write(uint64_t address, uint64_t value) 96{ 97 cvmx_addr_t ptr; 98 99 ptr.u64 = 0; 100 ptr.sio.mem_region = CVMX_IO_SEG; 101 ptr.sio.is_io = 1; 102 ptr.sio.did = CVMX_OCT_DID_KEY_RW; 103 ptr.sio.offset = address; 104 105 cvmx_write_io(ptr.u64, value); 106} 107 108 109/* CSR typedefs have been moved to cvmx-key-defs.h */ 110 111#ifdef __cplusplus 112} 113#endif 114 115#endif /* __CVMX_KEY_H__ */ 116