| 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 |
| |
| /** @} |
| */ |