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