0,0 → 1,131 |
/* |
* Copyright (c) 2009 Jiri Svoboda |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
|
/** @addtogroup bd |
* @{ |
*/ |
/** @file |
*/ |
|
#ifndef __ATA_BD_H__ |
#define __ATA_BD_H__ |
|
#include <sys/types.h> |
|
enum { |
CTL_READ_START = 0, |
CTL_WRITE_START = 1, |
}; |
|
enum { |
STATUS_FAILURE = 0 |
}; |
|
enum { |
MAX_DISKS = 2 |
}; |
|
typedef union { |
/* Read */ |
struct { |
uint8_t data_port; |
uint8_t error; |
uint8_t sector_count; |
uint8_t sector_number; |
uint8_t cylinder_low; |
uint8_t cylinder_high; |
uint8_t drive_head; |
uint8_t status; |
}; |
|
/* Write */ |
struct { |
uint8_t pad0[7]; |
uint8_t command; |
}; |
} ata_cmd_t; |
|
typedef union { |
/* Read */ |
struct { |
uint8_t pad0[6]; |
uint8_t alt_status; |
uint8_t drive_address; |
}; |
|
/* Write */ |
struct { |
uint8_t pad1[6]; |
uint8_t device_control; |
uint8_t pad2; |
}; |
} ata_ctl_t; |
|
enum devctl_bits { |
DCR_SRST = 0x04, /**< Software Reset */ |
DCR_nIEN = 0x02 /**< Interrupt Enable (negated) */ |
}; |
|
enum status_bits { |
SR_BSY = 0x80, /**< Busy */ |
SR_DRDY = 0x40, /**< Drive Ready */ |
SR_DWF = 0x20, /**< Drive Write Fault */ |
SR_DSC = 0x10, /**< Drive Seek Complete */ |
SR_DRQ = 0x08, /**< Data Request */ |
SR_CORR = 0x04, /**< Corrected Data */ |
SR_IDX = 0x02, /**< Index */ |
SR_ERR = 0x01 /**< Error */ |
}; |
|
enum drive_head_bits { |
DHR_DRV = 0x10 |
}; |
|
enum error_bits { |
ER_BBK = 0x80, /**< Bad Block Detected */ |
ER_UNC = 0x40, /**< Uncorrectable Data Error */ |
ER_MC = 0x20, /**< Media Changed */ |
ER_IDNF = 0x10, /**< ID Not Found */ |
ER_MCR = 0x08, /**< Media Change Request */ |
ER_ABRT = 0x04, /**< Aborted Command */ |
ER_TK0NF = 0x02, /**< Track 0 Not Found */ |
ER_AMNF = 0x01 /**< Address Mark Not Found */ |
}; |
|
typedef struct { |
bool present; |
unsigned heads; |
unsigned cylinders; |
unsigned sectors; |
uint64_t blocks; |
} disk_t; |
|
#endif |
|
/** @} |
*/ |