source: trunk/kernel/drivers/ibmpc/ata.h @ 1

Last change on this file since 1 was 1, checked in by alain, 5 years ago

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