dc4ee6ca91
make use of it where possible. This primarily brings in support for newer hardware, and FreeBSD is not yet able to support the abundance of IRQs on new hardware and many features in the Ethernet driver. Because of the changes to IRQs in the Simple Executive, we have to maintain our own list of Octeon IRQs now, which probably can be pared-down and be specific to the CIU interrupt unit soon, and when other interrupt mechanisms are added they can maintain their own definitions. Remove unmasking of interrupts from within the UART device now that the function used is no longer present in the Simple Executive. The unmasking seems to have been gratuitous as this is more properly handled by the buses above the UART device, and seems to work on that basis.
217 lines
6.1 KiB
C
217 lines
6.1 KiB
C
/***********************license start***************
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* Copyright (c) 2003-2010 Cavium Inc. (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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* * Neither the name of Cavium Inc. 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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* This Software, including technical data, may be subject to U.S. export control
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* laws, including the U.S. Export Administration Act and its associated
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* regulations, and may be subject to export or import regulations in other
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* countries.
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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 INC. MAKES NO PROMISES, REPRESENTATIONS OR
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* WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH RESPECT TO
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* THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY REPRESENTATION OR
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* DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT DEFECTS, AND CAVIUM
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* SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES OF TITLE,
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* MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A PARTICULAR PURPOSE, LACK OF
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* VIRUSES, ACCURACY OR COMPLETENESS, QUIET ENJOYMENT, QUIET POSSESSION OR
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* CORRESPONDENCE TO DESCRIPTION. THE ENTIRE RISK ARISING OUT OF USE OR
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* PERFORMANCE OF THE SOFTWARE LIES WITH YOU.
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***********************license end**************************************/
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/**
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* @file
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*
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* Interface to the EBH-30xx specific devices
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*
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* <hr>$Revision: 70030 $<hr>
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*
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*/
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#include <time.h>
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#include "cvmx-config.h"
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#include "cvmx.h"
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#include "cvmx-sysinfo.h"
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#include "cvmx-cn3010-evb-hs5.h"
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#include "cvmx-twsi.h"
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static inline uint8_t bin2bcd(uint8_t bin)
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{
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return (bin / 10) << 4 | (bin % 10);
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}
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static inline uint8_t bcd2bin(uint8_t bcd)
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{
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return (bcd >> 4) * 10 + (bcd & 0xf);
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}
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#define TM_CHECK(_expr, _msg) \
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do { \
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if (_expr) { \
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cvmx_dprintf("Warning: RTC has invalid %s field\n", (_msg)); \
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rc = -1; \
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} \
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} while(0);
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static int validate_tm_struct(struct tm * tms)
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{
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int rc = 0;
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if (!tms)
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return -1;
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TM_CHECK(tms->tm_sec < 0 || tms->tm_sec > 60, "second"); /* + Leap sec */
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TM_CHECK(tms->tm_min < 0 || tms->tm_min > 59, "minute");
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TM_CHECK(tms->tm_hour < 0 || tms->tm_hour > 23, "hour");
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TM_CHECK(tms->tm_mday < 1 || tms->tm_mday > 31, "day");
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TM_CHECK(tms->tm_wday < 0 || tms->tm_wday > 6, "day of week");
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TM_CHECK(tms->tm_mon < 0 || tms->tm_mon > 11, "month");
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TM_CHECK(tms->tm_year < 0 || tms->tm_year > 200,"year");
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return rc;
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}
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/*
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* Board-specifc RTC read
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* Time is expressed in seconds from epoch (Jan 1 1970 at 00:00:00 UTC)
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* and converted internally to calendar format.
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*/
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uint32_t cvmx_rtc_ds1337_read(void)
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{
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int i, retry;
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uint32_t time;
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uint8_t reg[8];
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uint8_t sec;
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struct tm tms;
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memset(®, 0, sizeof(reg));
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memset(&tms, 0, sizeof(struct tm));
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for(retry=0; retry<2; retry++)
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{
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/* Lockless read: detects the infrequent roll-over and retries */
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reg[0] = cvmx_twsi_read8(CVMX_RTC_DS1337_ADDR, 0x0);
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for(i=1; i<7; i++)
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reg[i] = cvmx_twsi_read8_cur_addr(CVMX_RTC_DS1337_ADDR);
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sec = cvmx_twsi_read8(CVMX_RTC_DS1337_ADDR, 0x0);
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if ((sec & 0xf) == (reg[0] & 0xf))
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break; /* Time did not roll-over, value is correct */
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}
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tms.tm_sec = bcd2bin(reg[0] & 0x7f);
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tms.tm_min = bcd2bin(reg[1] & 0x7f);
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tms.tm_hour = bcd2bin(reg[2] & 0x3f);
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if ((reg[2] & 0x40) && (reg[2] & 0x20)) /* AM/PM format and is PM time */
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{
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tms.tm_hour = (tms.tm_hour + 12) % 24;
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}
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tms.tm_wday = (reg[3] & 0x7) - 1; /* Day of week field is 0..6 */
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tms.tm_mday = bcd2bin(reg[4] & 0x3f);
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tms.tm_mon = bcd2bin(reg[5] & 0x1f) - 1; /* Month field is 0..11 */
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tms.tm_year = ((reg[5] & 0x80) ? 100 : 0) + bcd2bin(reg[6]);
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if (validate_tm_struct(&tms))
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cvmx_dprintf("Warning: RTC calendar is not configured properly\n");
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time = mktime(&tms);
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return time;
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}
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/*
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* Board-specific RTC write
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* Time returned is in seconds from epoch (Jan 1 1970 at 00:00:00 UTC)
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*/
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int cvmx_rtc_ds1337_write(uint32_t time)
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{
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int i, rc, retry;
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struct tm tms;
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uint8_t reg[8];
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uint8_t sec;
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time_t time_from_epoch = time;
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localtime_r(&time_from_epoch, &tms);
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if (validate_tm_struct(&tms))
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{
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cvmx_dprintf("Error: RTC was passed wrong calendar values, write failed\n");
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goto tm_invalid;
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}
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reg[0] = bin2bcd(tms.tm_sec);
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reg[1] = bin2bcd(tms.tm_min);
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reg[2] = bin2bcd(tms.tm_hour); /* Force 0..23 format even if using AM/PM */
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reg[3] = bin2bcd(tms.tm_wday + 1);
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reg[4] = bin2bcd(tms.tm_mday);
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reg[5] = bin2bcd(tms.tm_mon + 1);
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if (tms.tm_year >= 100) /* Set century bit*/
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{
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reg[5] |= 0x80;
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}
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reg[6] = bin2bcd(tms.tm_year % 100);
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/* Lockless write: detects the infrequent roll-over and retries */
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for(retry=0; retry<2; retry++)
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{
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rc = 0;
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for(i=0; i<7; i++)
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{
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rc |= cvmx_twsi_write8(CVMX_RTC_DS1337_ADDR, i, reg[i]);
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}
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sec = cvmx_twsi_read8(CVMX_RTC_DS1337_ADDR, 0x0);
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if ((sec & 0xf) == (reg[0] & 0xf))
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break; /* Time did not roll-over, value is correct */
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}
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return (rc ? -1 : 0);
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tm_invalid:
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return -1;
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}
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#ifdef CVMX_RTC_DEBUG
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void cvmx_rtc_ds1337_dump_state(void)
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{
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int i = 0;
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printf("RTC:\n");
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printf("%d : %02X ", i, cvmx_twsi_read8(CVMX_RTC_DS1337_ADDR, 0x0));
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for(i=1; i<16; i++) {
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printf("%02X ", cvmx_twsi_read8_cur_addr(CVMX_RTC_DS1337_ADDR));
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}
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printf("\n");
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}
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#endif /* CVMX_RTC_DEBUG */
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