1210284Sjmallett/***********************license start*************** 2232812Sjmallett * Copyright (c) 2003-2010 Cavium Inc. (support@cavium.com). All rights 3215990Sjmallett * reserved. 4210284Sjmallett * 5210284Sjmallett * 6215990Sjmallett * Redistribution and use in source and binary forms, with or without 7215990Sjmallett * modification, are permitted provided that the following conditions are 8215990Sjmallett * met: 9210284Sjmallett * 10215990Sjmallett * * Redistributions of source code must retain the above copyright 11215990Sjmallett * notice, this list of conditions and the following disclaimer. 12210284Sjmallett * 13215990Sjmallett * * Redistributions in binary form must reproduce the above 14215990Sjmallett * copyright notice, this list of conditions and the following 15215990Sjmallett * disclaimer in the documentation and/or other materials provided 16215990Sjmallett * with the distribution. 17215990Sjmallett 18232812Sjmallett * * Neither the name of Cavium Inc. nor the names of 19215990Sjmallett * its contributors may be used to endorse or promote products 20215990Sjmallett * derived from this software without specific prior written 21215990Sjmallett * permission. 22215990Sjmallett 23215990Sjmallett * This Software, including technical data, may be subject to U.S. export control 24215990Sjmallett * laws, including the U.S. Export Administration Act and its associated 25215990Sjmallett * regulations, and may be subject to export or import regulations in other 26215990Sjmallett * countries. 27215990Sjmallett 28215990Sjmallett * TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS" 29232812Sjmallett * AND WITH ALL FAULTS AND CAVIUM INC. MAKES NO PROMISES, REPRESENTATIONS OR 30215990Sjmallett * WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH RESPECT TO 31215990Sjmallett * THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY REPRESENTATION OR 32215990Sjmallett * DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT DEFECTS, AND CAVIUM 33215990Sjmallett * SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES OF TITLE, 34215990Sjmallett * MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A PARTICULAR PURPOSE, LACK OF 35215990Sjmallett * VIRUSES, ACCURACY OR COMPLETENESS, QUIET ENJOYMENT, QUIET POSSESSION OR 36215990Sjmallett * CORRESPONDENCE TO DESCRIPTION. THE ENTIRE RISK ARISING OUT OF USE OR 37215990Sjmallett * PERFORMANCE OF THE SOFTWARE LIES WITH YOU. 38210284Sjmallett ***********************license end**************************************/ 39210284Sjmallett 40210284Sjmallett 41210284Sjmallett 42210284Sjmallett 43210284Sjmallett 44210284Sjmallett 45215990Sjmallett 46210284Sjmallett/** 47210284Sjmallett * @file 48210284Sjmallett * 49210284Sjmallett * Interface to the on chip key memory. Key memory is 50210284Sjmallett * 8k on chip that is inaccessible from off chip. It can 51210284Sjmallett * also be cleared using an external hardware pin. 52210284Sjmallett * 53232812Sjmallett * <hr>$Revision: 70030 $<hr> 54210284Sjmallett * 55210284Sjmallett */ 56210284Sjmallett 57210284Sjmallett#ifndef __CVMX_KEY_H__ 58210284Sjmallett#define __CVMX_KEY_H__ 59210284Sjmallett 60210284Sjmallett#ifdef __cplusplus 61210284Sjmallettextern "C" { 62210284Sjmallett#endif 63210284Sjmallett 64210284Sjmallett#define CVMX_KEY_MEM_SIZE 8192 /* Size in bytes */ 65210284Sjmallett 66210284Sjmallett 67210284Sjmallett/** 68210284Sjmallett * Read from KEY memory 69210284Sjmallett * 70210284Sjmallett * @param address Address (byte) in key memory to read 71210284Sjmallett * 0 <= address < CVMX_KEY_MEM_SIZE 72210284Sjmallett * @return Value from key memory 73210284Sjmallett */ 74210284Sjmallettstatic inline uint64_t cvmx_key_read(uint64_t address) 75210284Sjmallett{ 76210284Sjmallett cvmx_addr_t ptr; 77210284Sjmallett 78210284Sjmallett ptr.u64 = 0; 79210284Sjmallett ptr.sio.mem_region = CVMX_IO_SEG; 80210284Sjmallett ptr.sio.is_io = 1; 81210284Sjmallett ptr.sio.did = CVMX_OCT_DID_KEY_RW; 82210284Sjmallett ptr.sio.offset = address; 83210284Sjmallett 84210284Sjmallett return cvmx_read_csr(ptr.u64); 85210284Sjmallett} 86210284Sjmallett 87210284Sjmallett 88210284Sjmallett/** 89210284Sjmallett * Write to KEY memory 90210284Sjmallett * 91210284Sjmallett * @param address Address (byte) in key memory to write 92210284Sjmallett * 0 <= address < CVMX_KEY_MEM_SIZE 93210284Sjmallett * @param value Value to write to key memory 94210284Sjmallett */ 95210284Sjmallettstatic inline void cvmx_key_write(uint64_t address, uint64_t value) 96210284Sjmallett{ 97210284Sjmallett cvmx_addr_t ptr; 98210284Sjmallett 99210284Sjmallett ptr.u64 = 0; 100210284Sjmallett ptr.sio.mem_region = CVMX_IO_SEG; 101210284Sjmallett ptr.sio.is_io = 1; 102210284Sjmallett ptr.sio.did = CVMX_OCT_DID_KEY_RW; 103210284Sjmallett ptr.sio.offset = address; 104210284Sjmallett 105210284Sjmallett cvmx_write_io(ptr.u64, value); 106210284Sjmallett} 107210284Sjmallett 108210284Sjmallett 109215990Sjmallett/* CSR typedefs have been moved to cvmx-key-defs.h */ 110210284Sjmallett 111210284Sjmallett#ifdef __cplusplus 112210284Sjmallett} 113210284Sjmallett#endif 114210284Sjmallett 115210284Sjmallett#endif /* __CVMX_KEY_H__ */ 116