136 lines
3.9 KiB
C
Executable File
136 lines
3.9 KiB
C
Executable File
/*
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* drivers/arisc/interfaces/arisc_standby.c
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*
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* Copyright (c) 2012 Allwinner.
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* 2012-05-01 Written by sunny (sunny@allwinnertech.com).
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* 2012-10-01 Written by superm (superm@allwinnertech.com).
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "../arisc_i.h"
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#include <asm/tlbflush.h>
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#include <asm/cacheflush.h>
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#include <linux/sys_config.h>
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/* record super-standby wakeup event */
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static unsigned long dram_crc_error = 0;
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static unsigned long dram_crc_total_count = 0;
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static unsigned long dram_crc_error_count = 0;
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/**
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* query super-standby wakeup source.
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* @para: point of buffer to store wakeup event informations.
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*
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* return: result, 0 - query successed,
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* !0 - query failed;
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*/
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int arisc_query_wakeup_source(u32 *event)
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{
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int result;
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/* send message use hwmsgbox */
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result = invoke_scp_fn_smc(ARM_SVC_ARISC_QUERY_WAKEUP_SRC_REQ, virt_to_phys(event), 0, 0);
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return result;
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}
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EXPORT_SYMBOL(arisc_query_wakeup_source);
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/*
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* query super-standby infoation.
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* @para: point of array to store power states informations during sst.
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* @op: 0:read, 1:set
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*
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* return: result, 0 - query successed,
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* !0 - query failed;
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*/
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int arisc_query_standby_power_cfg(struct standby_info_para *para)
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{
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memcpy((void *)para, (void *)&arisc_powchk_back, sizeof(struct standby_info_para));
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return 0;
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}
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EXPORT_SYMBOL(arisc_query_standby_power_cfg);
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/*
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* query super-standby infoation.
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* @para: point of array to store power states informations during sst.
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* @op: 0:read, 1:set
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*
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* return: result, 0 - query successed,
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* !0 - query failed;
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*/
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int arisc_query_set_standby_info(struct standby_info_para *para, arisc_rw_type_e op)
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{
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int result;
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u32 temp_paras[22];
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/* check standby_info_para size valid or not */
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if (sizeof(struct standby_info_para) > sizeof(temp_paras)) {
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ARISC_ERR("standby info parameters number too long\n");
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return -EINVAL;
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}
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/* initialize message */
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if (ARISC_WRITE == op) {
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memcpy((void *)temp_paras, (const void *)para, sizeof(struct standby_info_para));
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memcpy((void *)&arisc_powchk_back, (const void *)para, sizeof(struct standby_info_para));
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/* send query sst info request to arisc */
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/* FIXME: if the runtime sever enable the mmu & dcache,
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* should not use flush cache here.
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*/
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}
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/* send message use hwmsgbox */
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result = invoke_scp_fn_smc(ARM_SVC_ARISC_STANDBY_INFO_REQ, virt_to_phys(temp_paras), op, 0);
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if (ARISC_READ == op) {
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memcpy((void *)para, (void *)temp_paras, sizeof(struct standby_info_para));
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}
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return result;
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}
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EXPORT_SYMBOL(arisc_query_set_standby_info);
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/*
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* query super-standby dram crc result.
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* @para: point of buffer to store dram crc result informations.
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*
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* return: result, 0 - query successed,
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* !0 - query failed;
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*/
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int arisc_query_dram_crc_result(unsigned long *perror, unsigned long *ptotal_count,
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unsigned long *perror_count)
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{
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*perror = dram_crc_error;
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*ptotal_count = dram_crc_total_count;
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*perror_count = dram_crc_error_count;
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return 0;
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}
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EXPORT_SYMBOL(arisc_query_dram_crc_result);
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int arisc_set_dram_crc_result(unsigned long error, unsigned long total_count,
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unsigned long error_count)
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{
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dram_crc_error = error;
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dram_crc_total_count = total_count;
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dram_crc_error_count = error_count;
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return 0;
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}
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EXPORT_SYMBOL(arisc_set_dram_crc_result);
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