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source: kStuff/hacks/xtide/atalib.h

Last change on this file was 76, checked in by bird, 9 years ago

xtide-utils: ataid fixes. new delay method.
  • Property svn:eol-style set to native
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File size: 7.2 KB
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1/* $Id: atalib.h 76 2015-12-28 01:37:00Z bird $ */
2/** @file
3 * Does a little write test.
4 */
5
6/*
7 * Copyright (c) 2015 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 3 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with This program. If not, see <http://www.gnu.org/licenses/>
21 *
22 */
23
24
25#ifndef ___atalib_h___
26#define ___atalib_h___
27
28#include <stdint.h>
29
30/* The necessary I/O ports, indexed by "bus". */
31#define ATA_PORT_SHIFT (g_cPortShift) /* For XT-CF trick */
32#define ATA_REG_DATA(a_uBasePort) (a_uBasePort)
33#define ATA_REG_FEATURES(a_uBasePort) ((a_uBasePort) + (1 << ATA_PORT_SHIFT))
34#define ATA_REG_SECTOR_COUNT(a_uBasePort) ((a_uBasePort) + (2 << ATA_PORT_SHIFT))
35
36#define ATA_REG_SECTOR_NUMBER(a_uBasePort) ((a_uBasePort) + (3 << ATA_PORT_SHIFT))
37#define ATA_REG_CYLINDER_LOW(a_uBasePort) ((a_uBasePort) + (4 << ATA_PORT_SHIFT))
38#define ATA_REG_CYLINDER_HIGH(a_uBasePort) ((a_uBasePort) + (5 << ATA_PORT_SHIFT))
39#define ATA_REG_HEAD(a_uBasePort) ((a_uBasePort) + (6 << ATA_PORT_SHIFT))
40
41#define ATA_REG_LBA_0_7(a_uBasePort) ((a_uBasePort) + (3 << ATA_PORT_SHIFT))
42#define ATA_REG_LBA_8_15(a_uBasePort) ((a_uBasePort) + (4 << ATA_PORT_SHIFT))
43#define ATA_REG_LBA_16_23(a_uBasePort) ((a_uBasePort) + (5 << ATA_PORT_SHIFT))
44#define ATA_REG_LBA_24_27_MODE(a_uBasePort) ((a_uBasePort) + (6 << ATA_PORT_SHIFT))
45#define ATA_LBA_MODE UINT8_C(0x40) /**< Selects LBA mode in ATA_REG_LBA_24_27_MODE. */
46
47#define ATA_REG_DEVICE_SELECT(a_uBasePort) ((a_uBasePort) + (6 << ATA_PORT_SHIFT))
48#define ATA_REG_COMMAND(a_uBasePort) ((a_uBasePort) + (7 << ATA_PORT_SHIFT))
49
50
51#define ATA_REG_STATUS(a_uBasePort) ATA_REG_COMMAND(a_uBasePort)
52#define ATA_REG_ALT_STATUS(a_uCtrlPort) ATA_REG_CONTROL(a_uCtrlPort)
53#define ATA_STS_BUSY UINT8_C(0x80)
54#define ATA_STS_DRDY UINT8_C(0x40)
55#define ATA_STS_DF UINT8_C(0x20)
56#define ATA_STS_DSC UINT8_C(0x10)
57#define ATA_STS_DRQ UINT8_C(0x08)
58#define ATA_STS_CORR UINT8_C(0x04)
59#define ATA_STS_IDX UINT8_C(0x02)
60#define ATA_STS_ERR UINT8_C(0x01)
61
62#define ATA_REG_ERROR(a_uBasePort) ATA_REG_FEATURES(a_uBasePort)
63#define ATA_ERR_RSVR UINT8_C(0x80)
64#define ATA_ERR_UNC UINT8_C(0x40)
65#define ATA_ERR_MC UINT8_C(0x20)
66#define ATA_ERR_IDNF UINT8_C(0x10)
67#define ATA_ERR_MCR UINT8_C(0x08)
68#define ATA_ERR_ABRT UINT8_C(0x04)
69#define ATA_ERR_TKNONF UINT8_C(0x02)
70#define ATA_ERR_AMNF UINT8_C(0x01)
71
72#define ATA_REG_CONTROL(a_uCtrlPort) ((a_uCtrlPort) + (6 << ATA_PORT_SHIFT))
73#define ATA_CTL_IEN UINT8_C(0x02) /**< Interrupt enable. */
74#define ATA_CTL_SRST UINT8_C(0x04) /**< software reset */
75
76#define ATA_CMD_NOP UINT8_C(0x00)
77#define ATA_CMD_READ_SECTORS UINT8_C(0x20)
78#define ATA_CMD_READ_SECTORS_NR UINT8_C(0x21)
79#define ATA_CMD_READ_LONG UINT8_C(0x22)
80#define ATA_CMD_READ_LONG_NR UINT8_C(0x23)
81#define ATA_CMD_READ_BUFFER UINT8_C(0xe4)
82#define ATA_CMD_WRITE_SECTORS UINT8_C(0x30)
83#define ATA_CMD_WRITE_SECTORS_NR UINT8_C(0x31)
84#define ATA_CMD_WRITE_LONG UINT8_C(0x32)
85#define ATA_CMD_WRITE_LONG_NR UINT8_C(0x33)
86#define ATA_CMD_WRITE_BUFFER UINT8_C(0xe8)
87#define ATA_CMD_INIT_DEVICE_PARAMS UINT8_C(0x91)
88#define ATA_CMD_SET_FEATURES UINT8_C(0xef)
89#define ATA_CMD_IDENTIFY_DEVICE UINT8_C(0xec)
90
91#define ATA_DEV_MASTER UINT8_C(0x00) /**< Master device selection bit value. */
92#define ATA_DEV_SLAVE UINT8_C(0x10) /**< Slave device selection bit value. */
93
94#define ATA_FEATURE_EN_8BIT_DATA UINT8_C(0x01)
95#define ATA_FEATURE_DI_8BIT_DATA UINT8_C(0x81)
96#define ATA_FEATURE_EN_WRITE_CACHE UINT8_C(0x02)
97#define ATA_FEATURE_DI_WRITE_CACHE UINT8_C(0x82)
98#define ATA_FEATURE_SET_XFERMODE UINT8_C(0x03)
99#define ATA_FV_XFERMODE_PIO_MODE_DEFAULT UINT8_C(0x00)
100#define ATA_FV_XFERMODE_PIO_MODE_DEFAULT_NO_IORDY UINT8_C(0x01)
101#define ATA_FV_XFERMODE_PIO_MODE_XXX_FLAG UINT8_C(0x08)
102#define ATA_FV_XFERMODE_SWDMA_MODE_XXX_FLAG UINT8_C(0x10)
103#define ATA_FV_XFERMODE_MWDMA_MODE_XXX_FLAG UINT8_C(0x20)
104
105
106#define ATA_PIT_FREQ UINT32_C(1193182)
107void AtaDelayPitTicks(uint8_t cTicks);
108#pragma aux AtaDelayPitTicks = \
109 "pushf" \
110 "cli" \
111 "in al, 40h" \
112 "mov ch, al" /* ch = prev */ \
113 "again:" \
114 "nop" \
115 "in al, 40h" \
116 "sub ch, al" /* ch = ticks elapsed */ \
117 "sub cl, ch" /* check if ticks left is <= ticks elapsed; update ticks left. */ \
118 "mov ch, al" /* ch = prev tick count */ \
119 "ja again" \
120 "popf" \
121 parm [cl] \
122 modify exact [ax cx];
123
124/** Delay a bit by reading PIC mask. Should take 4-5 bus cycles,
125 * and thus be more than the required 400ns delay on old computers. */
126#if 0
127# define ATA_DELAY_400NS() do { inp(0x21); } while (0)
128# define ATA_DELAY_5US() \
129 do { ATA_DELAY_400NS(); ATA_DELAY_400NS(); ATA_DELAY_400NS(); ATA_DELAY_400NS(); ATA_DELAY_400NS(); \
130 ATA_DELAY_400NS(); ATA_DELAY_400NS(); ATA_DELAY_400NS(); ATA_DELAY_400NS(); ATA_DELAY_400NS(); \
131 ATA_DELAY_400NS(); ATA_DELAY_400NS(); ATA_DELAY_400NS(); \
132 } while (0)
133#else
134# define ATA_DELAY_400NS() AtaDelayPitTicks(1)
135# define ATA_DELAY_5US() AtaDelayPitTicks(6)
136#endif
137
138
139extern uint16_t g_cHeads;
140extern uint8_t g_cSectorsPerTrack;
141extern uint16_t g_cCylinders;
142extern uint16_t g_cSectorsPerCylinder;
143extern uint16_t g_awIdentify[256];
144
145int AtaInit(uint16_t uBasePort, uint16_t uCtrlPort, uint8_t uPortShift, uint8_t bDevice, uint8_t f8BitData, uint8_t fReset);
146int AtaInitFromArgv(int iArg, int cArgs, char **papszArgs);
147int AtaReInit(void);
148int AtaReset(void);
149int AtaIdentifyDevice(uint8_t bDevice, void *pvBuf);
150int AtaInitDeviceParams(uint8_t bDevice, uint8_t cSectorsPerTrack, uint8_t cHeads);
151int AtaSetFeature(uint8_t bDevice, uint8_t bFeature, uint8_t bValue);
152int AtaWriteSector(uint32_t iSector, void const *pvBuf);
153int AtaReadSector(uint32_t iSector, void *pvBuf);
154int AtaWriteBuffer(void const *pvBuf, uint8_t fExtraChecks);
155int AtaReadBuffer(void *pvBuf, uint8_t fExtraChecks);
156void AtaWriteData(void const *pvBuf, size_t cb, uint8_t f8BitData);
157void AtaReadData(void *pvBuf, size_t cb, uint8_t f8BitData);
158
159#endif
160
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