89 lines
2.9 KiB
C++
89 lines
2.9 KiB
C++
/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2011, 2012, 2013, 2014, 2015, 2016.
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This file is part of Sortix.
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Sortix is free software: you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the Free Software
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Foundation, either version 3 of the License, or (at your option) any later
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version.
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Sortix is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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details.
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You should have received a copy of the GNU General Public License along with
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Sortix. If not, see <http://www.gnu.org/licenses/>.
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disk/ata/registers.h
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Driver for ATA.
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*******************************************************************************/
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#ifndef SORTIX_DISK_ATA_REGISTERS_H
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#define SORTIX_DISK_ATA_REGISTERS_H
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#include <endian.h>
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#include <stdint.h>
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namespace Sortix {
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namespace ATA {
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struct prd
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{
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little_uint32_t physical;
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little_uint16_t count;
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little_uint16_t flags;
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};
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static const uint16_t PRD_FLAG_EOT = 1 << 15;
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static const uint16_t REG_DATA = 0x0;
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static const uint16_t REG_FEATURE = 0x1;
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static const uint16_t REG_ERROR = 0x1;
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static const uint16_t REG_SECTOR_COUNT = 0x2;
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static const uint16_t REG_LBA_LOW = 0x3;
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static const uint16_t REG_LBA_MID = 0x4;
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static const uint16_t REG_LBA_HIGH = 0x5;
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static const uint16_t REG_DRIVE_SELECT = 0x6;
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static const uint16_t REG_COMMAND = 0x7;
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static const uint16_t REG_STATUS = 0x7;
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static const uint8_t CMD_READ = 0x20;
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static const uint8_t CMD_READ_EXT = 0x24;
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static const uint8_t CMD_READ_DMA = 0xC8;
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static const uint8_t CMD_READ_DMA_EXT = 0x25;
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static const uint8_t CMD_WRITE = 0x30;
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static const uint8_t CMD_WRITE_EXT = 0x34;
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static const uint8_t CMD_WRITE_DMA = 0xCA;
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static const uint8_t CMD_WRITE_DMA_EXT = 0x35;
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static const uint8_t CMD_FLUSH_CACHE = 0xE7;
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static const uint8_t CMD_FLUSH_CACHE_EXT = 0xEA;
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static const uint8_t CMD_IDENTIFY = 0xEC;
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static const uint8_t STATUS_ERROR = 1 << 0;
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static const uint8_t STATUS_DATAREADY = 1 << 3;
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static const uint8_t STATUS_DRIVEFAULT = 1 << 5;
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static const uint8_t STATUS_BUSY = 1 << 7;
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static const uint16_t BUSMASTER_REG_COMMAND = 0x0;
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static const uint16_t BUSMASTER_REG_STATUS = 0x2;
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static const uint16_t BUSMASTER_REG_PDRT = 0x4;
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static const uint16_t BUSMASTER_COMMAND_START = 1 << 0;
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static const uint16_t BUSMASTER_COMMAND_READING = 1 << 3;
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static const uint8_t BUSMASTER_STATUS_DMA = 1 << 0;
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static const uint8_t BUSMASTER_STATUS_DMA_FAILURE = 1 << 1;
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static const uint8_t BUSMASTER_STATUS_INTERRUPT_PENDING = 1 << 2;
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static const uint8_t BUSMASTER_STATUS_MASTER_DMA_INIT = 1 << 5;
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static const uint8_t BUSMASTER_STATUS_SLAVE_DMA_INIT = 1 << 6;
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static const uint8_t BUSMASTER_STATUS_SIMPLEX = 1 << 7;
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} // namespace ATA
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} // namespace Sortix
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#endif
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