forked from Imagelibrary/rtems
3735f0859c
* libchip/i2c/spi-sd-card.c: Updated to the libblock changes. * libchip/ide/ata.c: Change to use a mutex rather than disable pre-emption. Updated to the libblock changes. * libchip/ide/ata_internal.h: Updated to the new chains API. * libchip/ide/ide_controller.c: Updated to the libblock changes. Added come debug tracing. * libchip/ide/ide_ctrl_cfg.h, libchip/ide/ide_ctrl_io.h: Updated to the libblock changes.
186 lines
6.4 KiB
C
186 lines
6.4 KiB
C
/*
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* ide_ctrl_io.h
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*
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* LibChip library IDE controller header file - IO operations defined for
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* IDE controllers.
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*
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* Copyright (C) 2002 OKTET Ltd., St.-Petersburg, Russia
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* Author: Eugeny S. Mints <Eugeny.Mints@oktet.ru>
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rtems.com/license/LICENSE.
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*
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* $Id$
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*/
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#ifndef __IDE_CTRL_IO_H__
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#define __IDE_CTRL_IO_H__
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <rtems/blkdev.h>
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/* Command Block Registers */
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#define IDE_REGISTER_DATA 0
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#define IDE_REGISTER_ERROR 1
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#define IDE_REGISTER_FEATURES IDE_REGISTER_ERROR
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#define IDE_REGISTER_SECTOR_COUNT 2
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#define IDE_REGISTER_SECTOR_NUMBER 3
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#define IDE_REGISTER_LBA0 IDE_REGISTER_SECTOR_NUMBER
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#define IDE_REGISTER_CYLINDER_LOW 4
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#define IDE_REGISTER_LBA1 IDE_REGISTER_CYLINDER_LOW
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#define IDE_REGISTER_CYLINDER_HIGH 5
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#define IDE_REGISTER_LBA2 IDE_REGISTER_CYLINDER_HIGH
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#define IDE_REGISTER_DEVICE_HEAD 6
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#define IDE_REGISTER_LBA3 IDE_REGISTER_DEVICE_HEAD
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#define IDE_REGISTER_STATUS 7
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#define IDE_REGISTER_COMMAND IDE_REGISTER_STATUS
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/* Control Block Registers */
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#define IDE_REGISTER_ALTERNATE_STATUS 6
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#define IDE_REGISTER_DEVICE_CONTROL IDE_REGISTER_ALTERNATE_STATUS
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/* offsets used to access registers */
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#define IDE_REGISTER_DEVICE_CONTROL_OFFSET 8
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#define IDE_REGISTER_ALTERNATE_STATUS_OFFSET IDE_REGISTER_DEVICE_CONTROL_OFFSET
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#define IDE_REGISTER_DATA_BYTE 9
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#define IDE_REGISTER_DATA_WORD 10
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/*
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* Registers bits
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*/
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#define IDE_REGISTER_STATUS_BSY 0x80 /* Busy bit */
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#define IDE_REGISTER_STATUS_DRDY 0x40 /* Device ready */
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#define IDE_REGISTER_STATUS_DF 0x20 /* Device fault */
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#define IDE_REGISTER_STATUS_DSC 0x10 /* Device seek complete-- */
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/* obsolete */
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#define IDE_REGISTER_STATUS_DRQ 0x08 /* Data request */
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#define IDE_REGISTER_STATUS_CORR 0x04 /* Corrected data-- */
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/* vendor specific--obsolete */
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#define IDE_REGISTER_STATUS_IDX 0x02 /* Index-- */
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/* vendor specific--obsolete */
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#define IDE_REGISTER_STATUS_ERR 0x01 /* Error */
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#define IDE_REGISTER_DEVICE_CONTROL_SRST 0x04 /* Host software reset bit */
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#define IDE_REGISTER_DEVICE_CONTROL_nIEN 0x02 /* Negated interrupt enable */
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#define IDE_REGISTER_DEVICE_HEAD_L 0x40 /* LBA mode bit */
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#define IDE_REGISTER_DEVICE_HEAD_DEV 0x10 /* Device0/Device1 bit */
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#define IDE_REGISTER_DEVICE_HEAD_DEV_POS 4 /* Dev0/Dev1 bit position */
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#define IDE_REGISTER_DEVICE_HEAD_HS 0x0f /* Head/LBA24_27 bits */
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#define IDE_REGISTER_LBA3_L 0x40
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#define IDE_REGISTER_LBA3_DEV 0x10
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#define IDE_REGISTER_LBA3_LBA 0x0f
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#define IDE_REGISTER_ERROR_ICRC 0x80 /* Interface CRC error on */
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/* UDMA data transfer */
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#define IDE_REGISTER_ERROR_UNC 0x40 /* Uncorrectable data error */
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#define IDE_REGISTER_ERROR_WP 0x40 /* Write protect */
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#define IDE_REGISTER_ERROR_MC 0x20 /* Media changed */
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#define IDE_REGISTER_ERROR_IDNF 0x10 /* Sector ID not found */
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#define IDE_REGISTER_ERROR_MCR 0x08 /* Media change requested */
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#define IDE_REGISTER_ERROR_ABRT 0x04 /* Aborted command */
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#define IDE_REGISTER_ERROR_NM 0x02 /* No media */
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#define IDE_REGISTER_ERROR_AMNF 0x01 /* Address mark not found */
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/* --obsolette in ATA-4 */
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#define IDE_REGISTER_ERROR_MED 0x01 /* Media error is detected */
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/*
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* ide_controller_read_data_block --
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* Read data block via controller's data register
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*
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* PARAMETERS:
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* minor - minor number of controller
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* block_size - number of bytes to read
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* bufs - set of buffers to store data
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* cbuf - number of current buffer from the set
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* pos - position inside current buffer 'cbuf'
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*
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* RETURNS:
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* NONE
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*/
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void
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ide_controller_read_data_block(rtems_device_minor_number minor,
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uint16_t block_size,
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rtems_blkdev_sg_buffer *bufs,
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uint32_t *cbuf,
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uint32_t *pos);
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/*
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* ide_controller_write_data_block --
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* Write data block via controller's data register
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*
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* PARAMETERS:
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* minor - minor number of controller
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* block_size - number of bytes to write
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* bufs - set of buffers which store data
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* cbuf - number of current buffer from the set
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* pos - position inside current buffer 'cbuf'
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*
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* RETURNS:
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* NONE
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*/
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void
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ide_controller_write_data_block(rtems_device_minor_number minor,
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uint16_t block_size,
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rtems_blkdev_sg_buffer *bufs,
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uint32_t *cbuf,
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uint32_t *pos);
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/*
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* ide_controller_read_register --
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* Read controller's register
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*
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* PARAMETERS:
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* minor - minor number of controller
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* reg - register to read
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* value - placeholder for result
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*
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* RETURNS
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* NONE
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*/
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void
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ide_controller_read_register(rtems_device_minor_number minor,
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int reg,
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uint16_t *value);
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/*
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* ide_controller_write_register --
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* Write controller's register
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*
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* PARAMETERS:
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* minor - minor number of controller
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* reg - register to write
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* value - value to write
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*
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* RETURNS:
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* NONE
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*/
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void
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ide_controller_write_register(rtems_device_minor_number minor,
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int reg, uint16_t value);
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/*
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* ide_controller_config_io_speed --
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* Set controller's speed of IO operations
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*
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* PARAMETERS:
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* minor - minor number of controller
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* modes_available - speeds available
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*
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* RETURNS:
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* RTEMS_SUCCESSFUL on success, or error code if
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* error occured
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*/
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rtems_status_code
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ide_controller_config_io_speed(int minor, uint16_t modes_available);
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#ifdef __cplusplus
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}
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#endif
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#endif /* __IDE_CTRL_IO_H__ */
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