/*
 * JR-IDE Project
 * - (c) 2017 Alan Hightower
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef __RPC_H__
#define __RPC_H__

#include <stdint.h>

#define IDE_CMD_NULL                0x00
#define IDE_CMD_READ_SEC            0x20
#define IDE_CMD_READ_SEC_NORETRY    0x21
#define IDE_CMD_WRITE_SEC           0x30
#define IDE_CMD_WRITE_SEC_NORETRY   0x31
#define IDE_CMD_VERIFY_SEC          0x40
#define IDE_CMD_VERIFY_SEC_NORETRY  0x41
#define IDE_CMD_SEEK                0x70
#define IDE_CMD_REDIRECTOR          0x81   // Vendor specific
#define IDE_CMD_PULL_REQUEST        0x8c   // Vendor specific
#define IDE_CMD_EXEC_DIAG           0x90
#define IDE_CMD_SET_DRIVE_PARM      0x91
#define IDE_CMD_READ_MULTIPLE       0xc4
#define IDE_CMD_WRITE_MULTIPLE      0xc5
#define IDE_CMD_SET_MULTIPLE_MODE   0xc6
#define IDE_CMD_FLUSH_CACHE         0xe7
#define IDE_CMD_IDENTIFY            0xec
#define IDE_CMD_SET_FEATURES        0xef
#define IDE_CMD_GET_MAX_ADDRESS     0xf8
#define IDE_CMD_SET_MAX_ADDRESS     0xf9


// IDE_CMD_REDIRECTOR feature sub-command
#define REDIR_FEAT_GET_STATUS       0x00   // Feature reg
#define REDIR_FEAT_GET_DATETIME     0x01   // TBD
#define REDIR_FEAT_DIR_FIRST        0x02
#define REDIR_FEAT_DIR_NEXT         0x03
#define REDIR_FEAT_STAT_PUSH        0x04
#define REDIR_FEAT_STAT_PULL        0x05

#define REDIR_STAT_ATTR    0x00
#define REDIR_STAT_CHDIR   0x01
#define REDIR_STAT_RMDIR   0x02
#define REDIR_STAT_MKDIR   0x03
#define REDIR_STAT_RENAME  0x04


#ifdef __WATCOMC__
#pragma pack(push, 1)
#define PACKATTRIB
#endif

#ifdef __GNUC__
#define PACKATTRIB __attribute__((packed))
#endif


typedef struct _st_redir_info
{
	uint32_t protocol_magic;

#define REDIR_PROTOCOL_MAGIC     0x8fe3b921

	uint8_t protocol_ver;

#define REDIR_PROTOCOL_VERSION   1

	uint8_t flags;

	uint8_t server_major;
	uint8_t server_minor;

	uint8_t cpld_major;
	uint8_t cpld_minor;

	uint8_t reserved1[2];

	uint16_t bytes_per_sector;
	uint16_t sector_per_cluster;
	uint16_t avail_clusters;
	uint16_t total_clusters;

	char mount_path[108];

	uint8_t time_sec;    // Seconds (0-59)
	uint8_t time_min;    // Minutes (0-59)
	uint8_t time_hour;   // Hours (0-23)
	uint8_t date_mday;   // Day of the month (1-31)
	uint8_t date_wday;   // Day of week (0-6) 0 = Sunday
	uint8_t date_mon;    // Month (1-12)
	uint16_t date_year;  // Year

} PACKATTRIB redir_info_t;


typedef struct _st_redir_opendir
{
	char filename[128];
	char filename_nul;

	char mask[11];
	char mask_nul;

	uint8_t driveno;
	uint8_t attrib_a;
	uint8_t attrib_b;

} PACKATTRIB redir_opendir_t;


typedef struct _st_redir_dentry
{
	char filename[11];
	uint8_t attrib;
	uint16_t dos_time;
	uint16_t dos_date;
	uint32_t size;

} PACKATTRIB redir_dentry_t; // 20 bytes


typedef struct _st_redir_nextdir
{
	uint16_t total;    // Total entries in current opendir context
	uint16_t start;    // Starting index represented by this block
	uint16_t count;    // Count of entries in this block
	uint16_t index;    // Used by DOS side to track current entry

	uint8_t reserved[4];

#define NEXT_DENTRIES   25

	redir_dentry_t entry[NEXT_DENTRIES];

} PACKATTRIB redir_nextdir_t;  // 512 bytes


typedef struct _st_redir_stat
{
	char filename_a[128];
 	char filename_a_nul;

	char filename_b[128];
 	char filename_b_nul;

	uint8_t driveno;
	uint8_t statop;
	uint8_t found;
	uint8_t attrib;
	uint16_t dos_time;
	uint16_t dos_date;
	uint32_t size;

} PACKATTRIB redir_stat_t;


#ifdef __WATCOMC__
#pragma pack(pop)
#endif

#undef PACKATTRIB

#endif