#ifndef _LOG_H_

#define _LOG_H_



#include <stdint.h>

#include <stdio.h>

//#include <stdlib.h>           //Nitin

#include <sys/types.h>

#include <sys/mman.h>

#include <core/page.h>



#define	LOG_MAGIC	(0xaabbccdd)



typedef struct log_info_s {

	/* This design is in accordance with mobicore requirements.

	 * Each log will obviously have a fixed (start_addr, size) spec.

	 * Also, since we can only map a small amount of data in driver at

	 * a time, we map only the header of the log and the page which has

	 * the tail of the log. These are the last two parameters.

	 */

	uint32_t log_start_paddr;

	uint32_t log_size;

	uint32_t log_hdr_vaddr;

	uint32_t log_data_vaddr;

} __attribute__ ((packed)) log_info_t;

#define	LOG_ENTRY_SIZE	128

typedef struct log_entry_s {

    uint32_t  timestamp;          /* timestamp at which log entry was made*/

    uint32_t  logger_id;          /* id is 1 for tima, 2 for lkmauth app  */

#define	LOG_MSG_SIZE	(LOG_ENTRY_SIZE - sizeof(uint32_t) - sizeof(uint32_t))

    char    log_msg[LOG_MSG_SIZE];      /* buffer for the entry                 */

} __attribute__ ((packed)) log_entry_t;



/* Size of header should be a multiple of LOG_ENTRY_SIZE */

typedef struct log_header_s

{

    uint32_t  magic;              /* magic number                         */

    uint32_t  log_start_addr;     /* address at which log starts          */

    uint32_t  log_write_addr;     /* address at which next entry is written*/

    uint32_t  num_log_entries;    /* number of log entries                */

    char    padding[LOG_ENTRY_SIZE - 4*sizeof(uint32_t)];

} __attribute__ ((packed)) log_header_t;





extern char g_log_msg[LOG_MSG_SIZE];



int32_t log_init(

	log_info_t

);

void log_msg(

	log_info_t,

	char *msg

);

int32_t log_read(

	int32_t region,

	int32_t entry_index,

	void *rsp

);

#endif