upstream/linux-5.10/kernel/ramdump/ramdump_device_trans.c

/**
 * @file oss_ramdump_osa.c
 * @brief Implementation of Ramdump os adapt
 *
 * Copyright (C) 2017 Sanechips Technology Co., Ltd.
 * @author Qing Wang <wang.qing@sanechips.com.cn>
 * @ingroup si_ap_oss_ramdump_id
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may
 * not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0 
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

/*******************************************************************************
 *                           Include header files                              *
 ******************************************************************************/
#include "ramdump.h"
#include <linux/lzo.h>
#include "ramdump_compress.h"
#ifdef CONFIG_RAMDUMP_EMMC
#include "ramdump_emmc.h"
#endif
#ifdef CONFIG_MTD_SPI_NAND
#include "ramdump_spinand.h"
#endif

#ifdef __cplusplus
extern "C" {
#endif

/*******************************************************************************
*                          Extern function declarations                        *
*******************************************************************************/
extern unsigned char *ramdump_phy_to_vir(unsigned long phy, unsigned long size);
extern int dump_printk_text(char *buffer, unsigned long len);

/*******************************************************************************
*                          Extern variable declarations                        *
*******************************************************************************/
extern unsigned int ramdump_compress_flag;
extern unsigned char *ramdump_log_buf;
extern unsigned int ramdump_export_mode;
extern unsigned int ramdump_emmc_size;
extern unsigned int ramdump_spinand_size;

/*******************************************************************************
 *                             Macro definitions                               *
 ******************************************************************************/
/*Ö¸ÁîÖ¡³¤¶È */
#define RAMDUMP_INTERACTIVE_DATA_LEN        40
#define RAMDUMP_INTERACTIVE_ARRAY_LEN       10

/* ramdump ºÍ ¹²ÏíÄÚ´æ½»»¥ÃüÁîÔ¼¶¨ */
/*ͬ²½ÇëÇó*/
#define RAMDUMP_PC_INTERACTIVE_REQ                  1
/*ͬ²½ÇëÇóÓ¦´ð,´«ÊäramdumpµÄÎļþÊýÄ¿*/
#define RAMDUMP_TRANS_SERVER_INTERACTIVE_RSP        2
/*ÇëÇó´«µÝÖ¸¶¨Îļþ±àºÅµÄÎļþÐÅÏ¢*/
#define RAMDUMP_PC_FILE_INFO_READ_REQ               3
/*ÇëÇó´«µÝÖ¸¶¨Îļþ±àºÅµÄÎļþÐÅÏ¢µÄÓ¦´ð£¬´«ÊäÎļþÃû¼°´óС*/
#define RAMDUMP_TRANS_SERVER_FILE_INFO_READ_RSP     4
/*ÇëÇó¶ÁÈ¡Ö¸¶¨Îļþ±àºÅµÄÎļþÄÚÈÝ*/
#define RAMDUMP_PC_FILE_DATA_TRANS_REQ              5
/*ÇëÇó¶ÁÈ¡Ö¸¶¨Îļþ±àºÅµÄÎļþÄÚÈݵÄÓ¦´ð£¬´«ÊäÎļþÄÚÈÝ*/
#define RAMDUMP_TRANS_SERVER_FILE_DATA_TRANS_RSP    6
/*´«Êä½áÊø*/
#define RAMDUMP_PC_FILE_TRANS_DONE_REQ              7
/*´«Êä½áÊøÓ¦´ð*/ 
#define RAMDUMP_TRANS_SERVER_FILE_TRANS_DONE_RSP    8

/* ´íÎóÀàÐÍ */
/*Ö¸Áî´íÎó*/
#define RAMDUMP_INTERACTIVE_CMD_ERROR               9
/*ÇëÇó´«µÝÖ¸¶¨Îļþ±àºÅ´í*/
#define RAMDUMP_FILE_NUMBER_ERROR                   10
/*ÇëÇó´«µÝÖ¸¶¨ÎļþλÖôóС´í*/
#define RAMDUMP_FILE_SIZE_ERROR                     11

#define RAMDUMP_DELAY_MS_COUNT (2500)

/*******************************************************************************
 *                             Type definitions                                *
 ******************************************************************************/
/*
 * struct TRANS WITH AP
 */

/* trans_server rsp pc, interactive msg struct */
typedef struct
{
	unsigned int cmd;
	unsigned int file_num;
} ramdump_trans_server_interactive_req;

/* trans_server rsp pc, file info msg struct */
typedef struct
{
	unsigned int cmd;
	char    file_name[RAMDUMP_RAMCONF_FILENAME_MAXLEN];
	unsigned int file_size;
} ramdump_trans_server_file_info_req;

/* pc req trans_server, file info msg struct */
typedef struct
{
	unsigned int cmd;
	unsigned int file_id;
} ramdump_pc_file_info_rsp;

/* trans_server rsp pc, trans data msg struct */
typedef struct
{
	unsigned int cmd;
	unsigned int buf_addr;
	unsigned int buf_left_size;
} ramdump_trans_server_data_trans_req;

/* pc req trans_server, trans data msg struct */
typedef struct
{
	unsigned int   cmd;
	unsigned int   file_id;      /* Îļþ±àºÅ         */
	unsigned int   offset;       /* offsetΪÊý¾ÝÆ«ÒÆ */
	unsigned int   length;       /* lengthΪÊý¾Ý³¤¶È */
} ramdump_pc_trans_data_rsp;

/*******************************************************************************
 *                        Local function declarations                          *
 ******************************************************************************/

/*******************************************************************************
 *                         Local variable definitions                          *
 ******************************************************************************/
char *ramdump_log_buf_region = NULL;
unsigned int ramdump_log_buf_len = 0;

/*******************************************************************************
 *                        Global variable definitions                          *
 ******************************************************************************/
unsigned char *ramdump_shared_mem_base = NULL;
unsigned char *ramdump_export_flag_base = NULL;
int ramdump_file_num = 0;
ramdump_file_t ramdump_device_fp = {0};
ramdump_file_t ramdump_spinand_fp = {0};
ramdump_file_t *g_ramdump_dev_fp;
unsigned int   ramdump_device_file_cnt = 0;
unsigned char *ramdump_log_buf = NULL; /* ¸´ÓÃramdump´æ´¢µÄ128KB(Æ«ÒÆ16KB) */

/*******************************************************************************
 *                      Inline function implementations                        *
 ******************************************************************************/
static inline void ramdump_wait_delay( unsigned long ms)
{
	volatile int j = 0;
	for (j = 0; j < 10000; j++);
}
/*******************************************************************************
 *                      extern function implementations                         *
 ******************************************************************************/

/*******************************************************************************
* ¹¦ÄÜÃèÊö:    ramdump_oss_data_trans_write
* ²ÎÊý˵Ã÷:     
*   (´«Èë²ÎÊý) void
*   (´«³ö²ÎÊý) void
* ·µ »Ø Öµ:    void 
* ÆäËü˵Ã÷:    This function is used for ramdump to trans dump data to PC
*******************************************************************************/
int ramdump_oss_data_trans_write(unsigned char *buffer, unsigned int size)
{
	int ret;
	ramdump_shmem_t *msg = (ramdump_shmem_t *)ramdump_shared_mem_base;

	if (size > (RAMDUMP_SHARED_MEM_LEN- roundup(sizeof(ramdump_shmem_t), RAMDUMP_SHMEM_ALIGN_SIZE)));
		ret = -1;

	while(1){
		if ((msg->core_flag == 1) && (msg->rw_flag == 1)){
			memcpy(msg->buf, buffer, size);
			msg->size = size;
			msg->core_flag = 0;
			msg->rw_flag = 2;
			ret = size;
			break;
		}
		else
			ramdump_wait_delay(0);
	}
	return ret;
}

/*******************************************************************************
* ¹¦ÄÜÃèÊö:    ramdump_oss_data_trans_read
* ²ÎÊý˵Ã÷:     
*   (´«Èë²ÎÊý) void
*   (´«³ö²ÎÊý) void
* ·µ »Ø Öµ:    void 
* ÆäËü˵Ã÷:    This function is used for ramdump to trans dump data to PC
*******************************************************************************/
int ramdump_oss_data_trans_read(unsigned char *buffer, unsigned int size)
{
	int ret;
	ramdump_shmem_t *msg = (ramdump_shmem_t *)ramdump_shared_mem_base;

	if (size > (RAMDUMP_SHARED_MEM_LEN - roundup(sizeof(ramdump_shmem_t), RAMDUMP_SHMEM_ALIGN_SIZE)))
		ret = -1;

	while(1){
		if ((msg->core_flag == 1) && (msg->rw_flag == 2)){
			if (size < msg->size)
				return -1;
			memcpy(buffer, msg->buf, msg->size);
			msg->size = size;
			msg->core_flag = 1;
			msg->rw_flag = 1;
			ret = size;
			break;
		}
		else
			ramdump_wait_delay(0);
	}
	return ret;
}

/*******************************************************************************
* ¹¦ÄÜÃèÊö:    ramdump_oss_data_trans_init
* ²ÎÊý˵Ã÷:     
*   (´«Èë²ÎÊý) void
*   (´«³ö²ÎÊý) void
* ·µ »Ø Öµ:    void 
* ÆäËü˵Ã÷:    This function is used for map ramdump_shared_mem_base
*******************************************************************************/
void ramdump_oss_data_trans_init(void)
{
	ramdump_shmem_t *msg = (ramdump_shmem_t *)ramdump_shared_mem_base;

	memset(msg, 0, sizeof(ramdump_shmem_t));
	msg->core_flag = 1;
	msg->rw_flag = 1;
}

/*******************************************************************************
* ¹¦ÄÜÃèÊö:    ramdump_device_init
* ²ÎÊý˵Ã÷:     
*   (´«Èë²ÎÊý) void
*   (´«³ö²ÎÊý) void
* ·µ »Ø Öµ:    void 
* ÆäËü˵Ã÷:    This function is used for init fp head
*******************************************************************************/
int ramdump_device_init(void)
{
	int ret = 0;

	ramdump_lzo_init();
	if(ramdump_export_mode == RAMDUMP_MODE_EMMC)
	{
#ifdef CONFIG_RAMDUMP_EMMC
		ret = ramdump_emmc_init(&ramdump_device_fp);
#endif
		g_ramdump_dev_fp = &ramdump_device_fp;
	}
	else if(ramdump_export_mode == RAMDUMP_MODE_SPINAND)
	{
#ifdef CONFIG_MTD_SPI_NAND
		ret = ramdump_spinand_init(&ramdump_spinand_fp);
#endif
		g_ramdump_dev_fp = &ramdump_spinand_fp;
	}
	return ret;
}

/*******************************************************************************
* ¹¦ÄÜÃèÊö:    ramdump_device_close
* ²ÎÊý˵Ã÷:     
*   (´«Èë²ÎÊý) void
*   (´«³ö²ÎÊý) void
* ·µ »Ø Öµ:    void 
* ÆäËü˵Ã÷:    This function is used for print close msg
*******************************************************************************/
void ramdump_device_close(void)
{
	g_ramdump_dev_fp->file_num = ramdump_device_file_cnt;
	
	if(ramdump_export_mode == RAMDUMP_MODE_EMMC)
	{
#ifdef CONFIG_RAMDUMP_EMMC
		ramdump_emmc_close(&ramdump_device_fp);
#endif
	}
	else if (ramdump_export_mode == RAMDUMP_MODE_SPINAND)
	{
#ifdef CONFIG_MTD_SPI_NAND
		ramdump_spinand_close(&ramdump_spinand_fp);
#endif
	}
}

/*******************************************************************************
* ¹¦ÄÜÃèÊö:    ramdump_fill_header
* ²ÎÊý˵Ã÷:     
*   (´«Èë²ÎÊý) 
*   (´«³ö²ÎÊý) void
* ·µ »Ø Öµ:    void 
* ÆäËü˵Ã÷:    This function is used for  ramdump file header
*******************************************************************************/
int ramdump_fill_header(char *file_name, unsigned int file_size, ramdump_file_t *fp, unsigned int offset)
{
	if (ramdump_device_file_cnt >= RAMDUMP_FILE_NUM_MAX)
		return -1;

	fp->file_fp[ramdump_device_file_cnt].magic = 0x3A3A3A3A;
	strncpy(fp->file_fp[ramdump_device_file_cnt].file_name, file_name, RAMDUMP_RAMCONF_FILENAME_MAXLEN - 1);
	fp->file_fp[ramdump_device_file_cnt].offset = offset;
	fp->file_fp[ramdump_device_file_cnt].size = file_size;
	return 0;
}

/*******************************************************************************
* ¹¦ÄÜÃèÊö:    ramdump_device_write_file
* ²ÎÊý˵Ã÷:     
*   (´«Èë²ÎÊý) void
*   (´«³ö²ÎÊý) void
* ·µ »Ø Öµ:    void 
* ÆäËü˵Ã÷:    This function is used for write file infomation
*******************************************************************************/
int ramdump_device_write_file(ramdump_trans_server_file_info_req *server_to_cap)
{
	int ret = -1;
	unsigned int file_size = 0;

	/* Started by AICoder, pid:wcfb91c2aa35add146d90b5530cd112845133621 */
	file_size = server_to_cap->file_size;
	
	if(ramdump_export_mode == RAMDUMP_MODE_EMMC)
	{
#ifdef CONFIG_RAMDUMP_EMMC
		if ((ramdump_emmc_offset >= RAMDUMP_TRANS_EMMC_LEN)
			|| ((ramdump_emmc_offset + file_size) > ramdump_emmc_size))
			return -1;

		ret = ramdump_fill_header(server_to_cap->file_name, 
								 server_to_cap->file_size, 
								 &ramdump_device_fp, 
								 ramdump_emmc_offset);
#endif
	}
	else if(ramdump_export_mode == RAMDUMP_MODE_SPINAND)
	{
#ifdef CONFIG_MTD_SPI_NAND
		if ((ramdump_spinand_offset >= RAMDUMP_SPINAND_LEN)
			|| ((ramdump_spinand_offset + file_size) > ramdump_spinand_size))
			return -1;
		/* Ended by AICoder, pid:wcfb91c2aa35add146d90b5530cd112845133621 */
		
		ret = ramdump_fill_header(server_to_cap->file_name, 
								  server_to_cap->file_size,
								  &ramdump_spinand_fp, 
								  ramdump_spinand_offset);
#endif
	}
	return ret;
}

/*******************************************************************************
* ¹¦ÄÜÃèÊö:	ramdump_device_write_file
* ²ÎÊý˵Ã÷:	 
*   (´«Èë²ÎÊý) fp£º	  Îļþ¾ä±ú
*   (´«³ö²ÎÊý) file_size Îļþ´óС
* ·µ »Ø Öµ:	³É¹¦·µ»Ø0£¬Ê§°Ü·µ»Ø-1 
* ÆäËü˵Ã÷:	This function is used for write file infomation
*******************************************************************************/
int ramdump_device_modify_file_size(ssize_t file_size)
{
	int ret = -1;
	ramdump_file_t *fp = g_ramdump_dev_fp;

	if(fp)
	{
		fp->file_fp[ramdump_device_file_cnt].size = file_size;
		return 0;
	}
	return ret;
}

/*******************************************************************************
* ¹¦ÄÜÃèÊö:	ramdump_device_write_file_head
* ²ÎÊý˵Ã÷:	 
*   (´«Èë²ÎÊý) void
*   (´«³ö²ÎÊý) void
* ·µ »Ø Öµ:	void 
* ÆäËü˵Ã÷:	This function is used for write file head
*******************************************************************************/
int ramdump_device_write_file_head(void)
{
	int ret = -1;
	
	if(ramdump_export_mode == RAMDUMP_MODE_EMMC)
	{
#ifdef CONFIG_RAMDUMP_EMMC
		ret = ramdump_emmc_write_file_head(&ramdump_device_fp);		
#endif
	}
	else if(ramdump_export_mode == RAMDUMP_MODE_SPINAND)
	{
#ifdef CONFIG_MTD_SPI_NAND
		ret = ramdump_spinand_write_file_head(&ramdump_spinand_fp);
#endif
	}
	return ret;
}

int ramdump_do_write_log_txt(ramdump_file_t *fp)
{
	int ret = -1;
	size_t dst_len = 0;	
	size_t send_len = 0;
	ramdump_shmem_t *msg = (ramdump_shmem_t *)ramdump_shared_mem_base;
	char *buf = NULL;

	memset(ramdump_log_buf, 0, RAMDUMP_LOG_BUF);
	ret = dump_printk_text(ramdump_log_buf, RAMDUMP_LOG_BUF);
	if(ret < 0){
		printk("ramdump printk log buf failed!!\n");
		return ret;
	}
	if (ramdump_compress_flag == 1){
		ret = ramdump_lzo_compress(ramdump_log_buf, RAMDUMP_LOG_BUF, msg->buf, &dst_len);
		buf = msg->buf;
	}
	if (ret != LZO_E_OK){
		dst_len = RAMDUMP_LOG_BUF;
		buf = ramdump_log_buf;
	}
	fp->file_num += 1;
	fp->file_fp[ramdump_device_file_cnt].magic = 0x3A3A3A3A;
	strncpy(fp->file_fp[ramdump_device_file_cnt].file_name, "cap_log_buf.txt", RAMDUMP_RAMCONF_FILENAME_MAXLEN - 1);

	if (fp == &ramdump_device_fp)
	{
#ifdef CONFIG_RAMDUMP_EMMC
		fp->file_fp[ramdump_device_file_cnt].size = roundup(dst_len, RAMDUMP_EMMC_ALIGN_SIZE);
		fp->file_fp[ramdump_device_file_cnt].offset = ramdump_emmc_offset;
		ret = mmc_bwrite(RAMDUMP_EMMC_ADDR + ramdump_emmc_offset, dst_len, buf);
		ramdump_emmc_write_file_head(fp);
		ramdump_emmc_offset = ramdump_emmc_offset + roundup(dst_len, RAMDUMP_EMMC_ALIGN_SIZE);
#endif
	}
	else if (fp == &ramdump_spinand_fp)
	{
#ifdef CONFIG_MTD_SPI_NAND
		send_len = roundup(dst_len, RAMDUMP_FLASH_ALIGN_SIZE);
		fp->file_fp[ramdump_device_file_cnt].size = send_len;
		fp->file_fp[ramdump_device_file_cnt].offset = ramdump_spinand_offset;
		ret = write_data(RAMDUMP_SPINAND_ADDR + ramdump_spinand_offset, send_len, buf);
		ramdump_spinand_offset = ramdump_spinand_offset + send_len;
#endif
	}
	else
	{
		printk("ramdump_do_write_logbuf error fp!\n");
		return -1;
	}
	ramdump_device_file_cnt += 1;
	return ret;
}

int ramdump_do_write_logbuf(ramdump_file_t *fp)
{
	char   *buf = NULL;
	int	ret  = -1;
	size_t dst_len = 0;
	size_t send_len = 0;
	ramdump_shmem_t *msg = (ramdump_shmem_t *)ramdump_shared_mem_base;

	if(!fp)
	{
		printk("ramdump_do_write_logbuf error: fp is Null\n");
		return -1;
	}

	ramdump_log_buf_region = log_buf_addr_get();
	ramdump_log_buf_len = log_buf_len_get();

	if (ramdump_compress_flag == 1){
		ret = ramdump_lzo_compress(ramdump_log_buf_region, ramdump_log_buf_len, msg->buf, &dst_len);
		buf = msg->buf;
	}
	if (ret != LZO_E_OK){
		dst_len = ramdump_log_buf_len;
		buf = ramdump_log_buf_region;
	}

	fp->file_num += 1;
	fp->file_fp[ramdump_device_file_cnt].magic = 0x3A3A3A3A;
	strncpy(fp->file_fp[ramdump_device_file_cnt].file_name, "cap_log_buf.bin", RAMDUMP_RAMCONF_FILENAME_MAXLEN - 1);

	if (fp == &ramdump_device_fp)
	{
#ifdef CONFIG_RAMDUMP_EMMC
		fp->file_fp[ramdump_device_file_cnt].size = roundup(dst_len, RAMDUMP_EMMC_ALIGN_SIZE);
		ret = mmc_bwrite(RAMDUMP_EMMC_ADDR + ramdump_emmc_offset, dst_len, buf);
		fp->file_fp[ramdump_device_file_cnt].offset = ramdump_emmc_offset;
		ramdump_emmc_write_file_head(fp);
		ramdump_emmc_offset = ramdump_emmc_offset + roundup(dst_len, RAMDUMP_EMMC_ALIGN_SIZE);
#endif
	}
	else if (fp == &ramdump_spinand_fp)
	{
#ifdef CONFIG_MTD_SPI_NAND
		send_len = roundup(dst_len, RAMDUMP_FLASH_ALIGN_SIZE);
		fp->file_fp[ramdump_device_file_cnt].size = send_len;
		fp->file_fp[ramdump_device_file_cnt].offset = ramdump_spinand_offset;
		ret = write_data(RAMDUMP_SPINAND_ADDR + ramdump_spinand_offset, send_len, buf);
		ramdump_spinand_offset = ramdump_spinand_offset + send_len;
#endif
	}
	else
	{
		printk("ramdump_do_write_logbuf error fp!\n");
		return -1;
	}
	
	ramdump_device_file_cnt += 1;
	ramdump_do_write_log_txt(fp);

	return ret;
}

/*******************************************************************************
* ¹¦ÄÜÃèÊö:	ramdump_device_write_logbuf
* ²ÎÊý˵Ã÷:	 
*   (´«Èë²ÎÊý) void
*   (´«³ö²ÎÊý) void
* ·µ »Ø Öµ:	void 
* ÆäËü˵Ã÷:	This function is used for  write cap logbuf
*******************************************************************************/
int ramdump_device_write_logbuf(void)
{
	int ret = -1;

	ret = ramdump_do_write_logbuf(g_ramdump_dev_fp);
	if (ret < 0)
		ramdump_printf("device memory trans file:cap_log_buf error!!!\n");
	else
		ramdump_printf("device memory trans file:cap_log_buf success!!!\n");
	return ret;
}

/*******************************************************************************
* ¹¦ÄÜÃèÊö:	ramdump_device_write_data
* ²ÎÊý˵Ã÷:	 
*   (´«Èë²ÎÊý) void
*   (´«³ö²ÎÊý) void
* ·µ »Ø Öµ:	void 
* ÆäËü˵Ã÷:	This function is used for write data
*******************************************************************************/
int ramdump_device_write_data(ramdump_shmem_t *msg, unsigned int size, ssize_t *dstlen)
{
	int ret = 0;

	if(ramdump_export_mode == RAMDUMP_MODE_EMMC)
	{
#ifdef CONFIG_RAMDUMP_EMMC
		ret = ramdump_emmc_write_data(msg, &ramdump_device_fp, size);
		if(ret < 0)
			*dstlen = 0;
		else
			*dstlen += roundup(ret, RAMDUMP_EMMC_ALIGN_SIZE);
#endif
	}
	else if(ramdump_export_mode == RAMDUMP_MODE_SPINAND)
	{
#ifdef CONFIG_MTD_SPI_NAND
		ret = ramdump_spinand_write_data(msg, &ramdump_spinand_fp, size);
		if(ret < 0)
			*dstlen = 0;
		else
			*dstlen += ret;
#endif
	}
	else
		return 0;
	return ret;
}

/*******************************************************************************
 *                  Global function implementations                            *
 ******************************************************************************/
void ramdump_shared_mem_init(void)
{
	ramdump_shared_mem_base = ramdump_phy_to_vir((unsigned long)RAMDUMP_SHARED_MEM_BASE, (unsigned long)RAMDUMP_MEM_LEN);
	ramdump_export_flag_base = ramdump_phy_to_vir((unsigned long)IRAM_BASE_ADDR_RAMDUMP_MODE, sizeof(unsigned long));
	ramdump_log_buf = ramdump_shared_mem_base + 0x4000;
	ramdump_flash_alloc_transbuf();
}

/*******************************************************************************
* ¹¦ÄÜÃèÊö:	ramdump_data_transfer_to_device
* ²ÎÊý˵Ã÷:
*   (´«Èë²ÎÊý) void
*   (´«³ö²ÎÊý) void
* ·µ »Ø Öµ:	void 
* ÆäËü˵Ã÷:	This function is used for ramdump to trans dump data to ap
*******************************************************************************/
void ramdump_data_transfer_to_device(void)
{
	int data_trans_max;
	int file_cnt = 0;
	int file_size = 0;
	int file_offset = 0;
	int file_left_size = 0;
	int file_trans_size = 0;
	int error_cmd = 0;
	int ret = 0;
	ssize_t file_dstlen = 0;

	unsigned int req_buf[RAMDUMP_INTERACTIVE_ARRAY_LEN] = {0};
	ramdump_trans_server_interactive_req cap_to_server_msg = {0};

	/* interactive begin */
	if(ramdump_device_init() < 0)
		return;

	ramdump_device_write_logbuf();
	data_trans_max = RAMDUMP_SHARED_MEM_LEN - roundup(sizeof(ramdump_shmem_t), RAMDUMP_SHMEM_ALIGN_SIZE) - RAMDUMP_COMPRESS_OUT_LEN;
	cap_to_server_msg.cmd = RAMDUMP_PC_INTERACTIVE_REQ;
	ramdump_oss_data_trans_write((unsigned char*)(&cap_to_server_msg), sizeof(cap_to_server_msg));

	for(;;)
	{
		ramdump_oss_data_trans_read((unsigned char *)req_buf, RAMDUMP_INTERACTIVE_DATA_LEN);
		switch (*(unsigned int *)req_buf)
		{
			case RAMDUMP_TRANS_SERVER_INTERACTIVE_RSP:
			{
				ramdump_pc_file_info_rsp cap_to_server_msg ={0};
				ramdump_trans_server_interactive_req *server_to_cap_msg = (ramdump_trans_server_interactive_req *)req_buf;
				/* data from server to cap */
				ramdump_file_num = server_to_cap_msg->file_num;

				/* data from cap to server */
				cap_to_server_msg.cmd = RAMDUMP_PC_FILE_INFO_READ_REQ;
				cap_to_server_msg.file_id = file_cnt;

				ramdump_oss_data_trans_write(
					(unsigned char*)(&cap_to_server_msg),
					sizeof(cap_to_server_msg));

				break;
			}
			case RAMDUMP_TRANS_SERVER_FILE_INFO_READ_RSP:
			{
				ramdump_pc_trans_data_rsp cap_to_server_msg = {0};
				ramdump_trans_server_file_info_req *server_to_cap_msg = (ramdump_trans_server_file_info_req *)req_buf;
				/* data from server to cap */
				/*device memory file create*/
				if(ramdump_device_write_file(server_to_cap_msg) == -1){
					cap_to_server_msg.cmd = RAMDUMP_PC_FILE_TRANS_DONE_REQ;
					/* Started by AICoder, pid:ddd3ag3c37x6798145ec08ac1067150b58735197 */
					ramdump_oss_data_trans_write(
					(unsigned char*)(&cap_to_server_msg), 
					sizeof(cap_to_server_msg));	
					break; 
					/* Ended by AICoder, pid:ddd3ag3c37x6798145ec08ac1067150b58735197 */
				}
				file_size = server_to_cap_msg->file_size;
				file_offset = 0;
				file_left_size = file_size;
				/* data from cap to server */
				cap_to_server_msg.cmd = RAMDUMP_PC_FILE_DATA_TRANS_REQ;
				cap_to_server_msg.file_id = file_cnt;
				cap_to_server_msg.offset = file_offset;
				if (file_size >= data_trans_max)
					cap_to_server_msg.length = data_trans_max;
				else
					cap_to_server_msg.length = file_size;
				file_trans_size = cap_to_server_msg.length;
				file_left_size = file_left_size - cap_to_server_msg.length;
				file_offset = file_offset + cap_to_server_msg.length;
				
				printk("device memory trans file:%-30s size %9d, offset %9d!!!\n", server_to_cap_msg->file_name, file_size, ramdump_emmc_offset);
				/* interactive data trans */
				ramdump_oss_data_trans_write(
					(unsigned char*)(&cap_to_server_msg), 
					sizeof(cap_to_server_msg));

				break;
			}
			case RAMDUMP_TRANS_SERVER_FILE_DATA_TRANS_RSP:
			{
				int write_len = 0;
				ramdump_pc_trans_data_rsp cap_to_server_msg = {0};
				/* data from server to cap */
				ramdump_shmem_t *server_to_cap_msg = (ramdump_shmem_t *)ramdump_shared_mem_base;
				server_to_cap_msg->core_flag = 0;

				/*data from cap to emmc*/
				write_len = ramdump_device_write_data(server_to_cap_msg, file_left_size, &file_dstlen);
				if(write_len < 0 )
				{
					/* Started by AICoder, pid:u5befs8483y615f142ce0bda306d660bed685275 */		
					if(write_len == -RAMDUMP_NO_FREE_SPACE)
					{
						cap_to_server_msg.cmd = RAMDUMP_PC_FILE_TRANS_DONE_REQ;
						ramdump_oss_data_trans_write(
						(unsigned char*)(&cap_to_server_msg), 
						sizeof(cap_to_server_msg));	
						break;
					}
					else
						ramdump_printf("ramdump write emmc data error!\n");
					/* Ended by AICoder, pid:u5befs8483y615f142ce0bda306d660bed685275 */	
				}
				/*ÅжÏÊ£Óà´óС*/
				if (file_left_size == 0)
				{
					file_cnt++;
					if (file_cnt == ramdump_file_num)
					{
						cap_to_server_msg.cmd = RAMDUMP_PC_FILE_TRANS_DONE_REQ;
					}
					else
					{
						cap_to_server_msg.cmd = RAMDUMP_PC_FILE_INFO_READ_REQ;
						cap_to_server_msg.file_id = file_cnt;
					}
					ramdump_device_modify_file_size(file_dstlen);
					file_dstlen = 0;
					ramdump_device_file_cnt++;
				}
				else
				{
					/* data from cap to server */
					if (file_left_size >= data_trans_max)
						cap_to_server_msg.length = data_trans_max;
					else
						cap_to_server_msg.length = file_left_size;
					cap_to_server_msg.cmd = RAMDUMP_PC_FILE_DATA_TRANS_REQ;
					cap_to_server_msg.file_id = file_cnt;
					cap_to_server_msg.offset = file_offset;
					file_left_size = file_left_size - cap_to_server_msg.length;
					file_offset= file_offset + cap_to_server_msg.length;
				}

				ramdump_oss_data_trans_write((unsigned char *)(&cap_to_server_msg), sizeof(cap_to_server_msg));
				continue;
			}
			case RAMDUMP_TRANS_SERVER_FILE_TRANS_DONE_RSP:
			{
				ramdump_device_close();
				return;
			}
			default:
			{
				error_cmd = RAMDUMP_INTERACTIVE_CMD_ERROR;
				ramdump_printf("ramdump trans emmc error:%d!\n", error_cmd);
				/* interactive data trans */
				break;
			}
		}
	}
}

#ifdef __cplusplus
}
#endif