| 1 | /* |
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| 2 | * ata.h - ATA interface registers |
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| 3 | * |
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| 4 | * Copyright (c) 2008,2009,2010,2011,2012 Ghassan Almaless |
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| 5 | * Copyright (c) 2011,2012 UPMC Sorbonne Universites |
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| 6 | * |
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| 7 | * This file is part of ALMOS-kernel. |
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| 8 | * |
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| 9 | * ALMOS-kernel is free software; you can redistribute it and/or modify it |
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| 10 | * under the terms of the GNU General Public License as published by |
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| 11 | * the Free Software Foundation; version 2.0 of the License. |
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| 12 | * |
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| 13 | * ALMOS-kernel is distributed in the hope that it will be useful, but |
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| 14 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 16 | * General Public License for more details. |
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| 17 | * |
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| 18 | * You should have received a copy of the GNU General Public License |
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| 19 | * along with ALMOS-kernel; if not, write to the Free Software Foundation, |
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| 20 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
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| 21 | */ |
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| 22 | |
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| 23 | #ifndef _ATA_H_ |
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| 24 | #define _ATA_H_ |
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| 25 | |
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| 26 | #include <types.h> |
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| 27 | #include <list.h> |
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| 28 | #include <driver.h> |
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| 29 | |
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| 30 | /* ATA Task File offsets */ |
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| 31 | #define ATA_DATA_REG 0 |
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| 32 | #define ATA_ERROR_REG 1 |
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| 33 | #define ATA_PRECOMPENSATION_REG 1 |
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| 34 | #define ATA_COUNT_REG 2 |
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| 35 | #define ATA_LBA_LOW_REG 3 |
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| 36 | #define ATA_LBA_MID_REG 4 |
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| 37 | #define ATA_LBA_HIGH_REG 5 |
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| 38 | #define ATA_DRIVE_REG 6 |
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| 39 | #define ATA_STATUS_REG 7 |
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| 40 | #define ATA_CMD_REG 7 |
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| 41 | |
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| 42 | #define ATA_DOR_PORT 0x3F6 |
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| 43 | |
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| 44 | /* ATA Status Register bits */ |
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| 45 | #define ATA_ERR 0x01 |
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| 46 | #define ATA_IDX 0x02 |
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| 47 | #define ATA_CORR 0x04 |
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| 48 | #define ATA_DRQ 0x08 |
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| 49 | #define ATA_DSC 0x10 |
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| 50 | #define ATA_WFT 0x20 |
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| 51 | #define ATA_DRDY 0x40 |
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| 52 | #define ATA_BSY 0x80 |
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| 53 | |
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| 54 | |
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| 55 | /* ATA Error Register bits */ |
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| 56 | |
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| 57 | /* Block device status */ |
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| 58 | #define ATA_IDLE 0 |
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| 59 | #define ATA_BUSY 1 |
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| 60 | #define ATA_READ_SUCCESS 2 |
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| 61 | #define ATA_WRITE_SUCCESS 3 |
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| 62 | #define ATA_READ_ERROR 4 |
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| 63 | #define ATA_WRITE_ERROR 5 |
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| 64 | #define ATA_ERROR 6 |
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| 65 | |
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| 66 | #define ATA_READ_CMD 0x020 |
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| 67 | #define ATA_WRITE_CMD 0x030 |
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| 68 | #define ATA_IDENTIFY_CMD 0x0EC |
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| 69 | |
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| 70 | #define ATA_LBA_CAP 0x0100 |
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| 71 | |
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| 72 | struct device_s; |
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| 73 | |
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| 74 | struct ata_identify_s |
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| 75 | { |
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| 76 | uint16_t general; |
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| 77 | uint16_t geometry[6]; |
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| 78 | uint16_t vendor_id1[3]; |
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| 79 | uint16_t info1[37]; |
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| 80 | uint16_t vendor_id2; |
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| 81 | uint16_t info2; |
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| 82 | uint16_t capabilities; |
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| 83 | uint16_t info3[10]; |
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| 84 | uint32_t sectors; |
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| 85 | //uint16_t lblock_lo; |
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| 86 | //uint16_t lblock_hi; |
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| 87 | uint32_t info4; |
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| 88 | uint16_t reserved1[64]; |
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| 89 | uint16_t vendor_id3[32]; |
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| 90 | uint16_t reserved2[96]; |
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| 91 | } __attribute__ ((packed)); |
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| 92 | |
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| 93 | struct ata_params_s |
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| 94 | { |
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| 95 | uint32_t blk_count; |
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| 96 | uint32_t blk_size; |
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| 97 | struct ata_identify_s info; |
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| 98 | }; |
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| 99 | |
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| 100 | struct ata_context_s |
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| 101 | { |
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| 102 | struct list_entry request_queue; |
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| 103 | struct wait_queue_s pending; |
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| 104 | struct ata_params_s params; |
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| 105 | }; |
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| 106 | |
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| 107 | void ibmpc_ata_init(struct device_s *hdd, void *base, uint_t irq); |
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| 108 | |
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| 109 | #endif /* _ATA_H_ */ |
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