161 lines
4.3 KiB
C
161 lines
4.3 KiB
C
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/***********************license start***************
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* Copyright (c) 2003-2008 Cavium Networks (support@cavium.com). All rights
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* reserved.
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*
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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*
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* * Neither the name of Cavium Networks nor the names of
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* its contributors may be used to endorse or promote products
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* derived from this software without specific prior written
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* permission.
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*
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* TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS"
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* AND WITH ALL FAULTS AND CAVIUM NETWORKS MAKES NO PROMISES, REPRESENTATIONS
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* OR WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH
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* RESPECT TO THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY
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* REPRESENTATION OR DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT
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* DEFECTS, AND CAVIUM SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES
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* OF TITLE, MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A PARTICULAR
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* PURPOSE, LACK OF VIRUSES, ACCURACY OR COMPLETENESS, QUIET ENJOYMENT, QUIET
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* POSSESSION OR CORRESPONDENCE TO DESCRIPTION. THE ENTIRE RISK ARISING OUT
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* OF USE OR PERFORMANCE OF THE SOFTWARE LIES WITH YOU.
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*
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*
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* For any questions regarding licensing please contact marketing@caviumnetworks.com
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*
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***********************license end**************************************/
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/**
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* @file
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*
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* This file provides support for real time clocks on some boards
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*
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* <hr>$Revision: 41586 $<hr>
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*
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*/
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#ifndef __CVMX_RTC_H__
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#define __CVMX_RTC_H__
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#include "cvmx-sysinfo.h"
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#include "cvmx-thunder.h"
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#include "cvmx-cn3010-evb-hs5.h"
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/**
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* Supported RTC options
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*/
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typedef enum
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{
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CVMX_RTC_READ = 0x1, /**< Device supports read access */
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CVMX_RTC_WRITE = 0x2, /**< Device supports write access */
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CVMX_RTC_TIME_EPOCH = 0x10, /**< Time stored as seconds from epoch */
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CVMX_RTC_TIME_CAL = 0x20, /**< Time stored as calendar */
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} cvmx_rtc_options_t;
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/**
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* Return options supported by the RTC device
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*
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* @return Supported options, or 0 if RTC is not supported
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*/
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static inline cvmx_rtc_options_t cvmx_rtc_supported()
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{
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static int supported = -1;
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if (supported < 0) {
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switch (cvmx_sysinfo_get()->board_type)
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{
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case CVMX_BOARD_TYPE_THUNDER:
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supported = CVMX_RTC_READ | CVMX_RTC_WRITE | CVMX_RTC_TIME_EPOCH;
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break;
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case CVMX_BOARD_TYPE_EBH3000:
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case CVMX_BOARD_TYPE_CN3010_EVB_HS5:
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supported = CVMX_RTC_READ | CVMX_RTC_WRITE | CVMX_RTC_TIME_CAL;
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break;
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default:
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supported = 0;
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break;
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}
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#ifdef CVMX_RTC_DEBUG
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cvmx_dprintf("Board type: %s, RTC support: 0x%x\n",
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cvmx_board_type_to_string(cvmx_sysinfo_get()->board_type),
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supported);
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#endif
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}
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return (cvmx_rtc_options_t) supported;
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}
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/**
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* Read time from RTC device.
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*
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* Time is expressed in seconds from epoch (Jan 1 1970 at 00:00:00 UTC)
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*
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* @return Time in seconds or 0 if RTC is not supported
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*/
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static inline uint32_t cvmx_rtc_read(void)
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{
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switch (cvmx_sysinfo_get()->board_type)
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{
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case CVMX_BOARD_TYPE_THUNDER:
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return cvmx_rtc_ds1374_read();
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break;
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case CVMX_BOARD_TYPE_EBH3000:
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case CVMX_BOARD_TYPE_CN3010_EVB_HS5:
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return cvmx_rtc_ds1337_read();
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break;
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default:
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return 0;
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break;
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}
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}
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/**
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* Write time to the RTC device
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*
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* @param time Number of seconds from epoch (Jan 1 1970 at 00:00:00 UTC)
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*
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* @return Zero on success or device-specific error on failure.
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*/
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static inline uint32_t cvmx_rtc_write(uint32_t time)
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{
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switch (cvmx_sysinfo_get()->board_type)
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{
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case CVMX_BOARD_TYPE_THUNDER:
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return cvmx_rtc_ds1374_write(time);
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break;
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case CVMX_BOARD_TYPE_EBH3000:
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case CVMX_BOARD_TYPE_CN3010_EVB_HS5:
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return cvmx_rtc_ds1337_write(time);
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break;
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default:
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return 0;
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break;
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}
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}
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#endif /* __CVMX_RTC_H__ */
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