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Diffstat (limited to 'include/libchip/ide_ctrl_io.h')
| -rw-r--r-- | include/libchip/ide_ctrl_io.h | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/include/libchip/ide_ctrl_io.h b/include/libchip/ide_ctrl_io.h new file mode 100644 index 0000000000..9534b0e88f --- /dev/null +++ b/include/libchip/ide_ctrl_io.h @@ -0,0 +1,186 @@ +/* + * ide_ctrl_io.h + * + * LibChip library IDE controller header file - IO operations defined for + * IDE controllers. + * + * Copyright (C) 2002 OKTET Ltd., St.-Petersburg, Russia + * Author: Eugeny S. Mints <Eugeny.Mints@oktet.ru> + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.org/license/LICENSE. + */ +#ifndef __IDE_CTRL_IO_H__ +#define __IDE_CTRL_IO_H__ + +#ifdef __cplusplus +extern "C" { +#endif + +#include <rtems/blkdev.h> + +/* Command Block Registers */ +#define IDE_REGISTER_DATA 0 +#define IDE_REGISTER_ERROR 1 +#define IDE_REGISTER_FEATURES IDE_REGISTER_ERROR +#define IDE_REGISTER_SECTOR_COUNT 2 +#define IDE_REGISTER_SECTOR_NUMBER 3 +#define IDE_REGISTER_LBA0 IDE_REGISTER_SECTOR_NUMBER +#define IDE_REGISTER_CYLINDER_LOW 4 +#define IDE_REGISTER_LBA1 IDE_REGISTER_CYLINDER_LOW +#define IDE_REGISTER_CYLINDER_HIGH 5 +#define IDE_REGISTER_LBA2 IDE_REGISTER_CYLINDER_HIGH +#define IDE_REGISTER_DEVICE_HEAD 6 +#define IDE_REGISTER_LBA3 IDE_REGISTER_DEVICE_HEAD +#define IDE_REGISTER_STATUS 7 +#define IDE_REGISTER_COMMAND IDE_REGISTER_STATUS + +/* Control Block Registers */ +#define IDE_REGISTER_ALTERNATE_STATUS 6 +#define IDE_REGISTER_DEVICE_CONTROL IDE_REGISTER_ALTERNATE_STATUS + +/* offsets used to access registers */ +#define IDE_REGISTER_DEVICE_CONTROL_OFFSET 8 +#define IDE_REGISTER_ALTERNATE_STATUS_OFFSET IDE_REGISTER_DEVICE_CONTROL_OFFSET +#define IDE_REGISTER_DATA_BYTE 9 +#define IDE_REGISTER_DATA_WORD 10 + +/* + * Registers bits + */ +#define IDE_REGISTER_STATUS_BSY 0x80 /* Busy bit */ +#define IDE_REGISTER_STATUS_DRDY 0x40 /* Device ready */ +#define IDE_REGISTER_STATUS_DF 0x20 /* Device fault */ +#define IDE_REGISTER_STATUS_DSC 0x10 /* Device seek complete-- */ + /* obsolete */ +#define IDE_REGISTER_STATUS_DRQ 0x08 /* Data request */ +#define IDE_REGISTER_STATUS_CORR 0x04 /* Corrected data-- */ + /* vendor specific--obsolete */ +#define IDE_REGISTER_STATUS_IDX 0x02 /* Index-- */ + /* vendor specific--obsolete */ +#define IDE_REGISTER_STATUS_ERR 0x01 /* Error */ + +#define IDE_REGISTER_DEVICE_CONTROL_SRST 0x04 /* Host software reset bit */ +#define IDE_REGISTER_DEVICE_CONTROL_nIEN 0x02 /* Negated interrupt enable */ + +#define IDE_REGISTER_DEVICE_HEAD_L 0x40 /* LBA mode bit */ +#define IDE_REGISTER_DEVICE_HEAD_DEV 0x10 /* Device0/Device1 bit */ +#define IDE_REGISTER_DEVICE_HEAD_DEV_POS 4 /* Dev0/Dev1 bit position */ +#define IDE_REGISTER_DEVICE_HEAD_HS 0x0f /* Head/LBA24_27 bits */ +#define IDE_REGISTER_LBA3_L 0x40 +#define IDE_REGISTER_LBA3_DEV 0x10 +#define IDE_REGISTER_LBA3_LBA 0x0f + +#define IDE_REGISTER_ERROR_ICRC (1 << 7) /* Interface CRC error on */ + /* UDMA data transfer */ +#define IDE_REGISTER_ERROR_UNC (1 << 6) /* Uncorrectable data error */ +#if CCJ_COULD_NOT_FIND_THIS_ERROR +#define IDE_REGISTER_ERROR_WP (1 << 6) /* Write protect */ +#endif +#define IDE_REGISTER_ERROR_MC (1 << 5) /* Media changed */ +#define IDE_REGISTER_ERROR_IDNF (1 << 4) /* Sector ID not found */ +#define IDE_REGISTER_ERROR_MCR (1 << 3) /* Media change requested */ + /* obsolette */ +#define IDE_REGISTER_ERROR_ABRT (1 << 2) /* Aborted command */ +#define IDE_REGISTER_ERROR_NM (1 << 1) /* No media, End of Media. */ +#define IDE_REGISTER_ERROR_AMNF (1 << 0) /* Address mark not found */ + /* --obsolette in ATA-4 */ +#define IDE_REGISTER_ERROR_MED (1 << 0) /* Media error is detected */ + +/* + * ide_controller_read_data_block -- + * Read data block via controller's data register + * + * PARAMETERS: + * minor - minor number of controller + * block_size - number of bytes to read + * bufs - set of buffers to store data + * cbuf - number of current buffer from the set + * pos - position inside current buffer 'cbuf' + * + * RETURNS: + * NONE + */ +void +ide_controller_read_data_block(rtems_device_minor_number minor, + uint32_t block_size, + rtems_blkdev_sg_buffer *bufs, + uint32_t *cbuf, + uint32_t *pos); + +/* + * ide_controller_write_data_block -- + * Write data block via controller's data register + * + * PARAMETERS: + * minor - minor number of controller + * block_size - number of bytes to write + * bufs - set of buffers which store data + * cbuf - number of current buffer from the set + * pos - position inside current buffer 'cbuf' + * + * RETURNS: + * NONE + */ +void +ide_controller_write_data_block(rtems_device_minor_number minor, + uint32_t block_size, + rtems_blkdev_sg_buffer *bufs, + uint32_t *cbuf, + uint32_t *pos); + +/* + * ide_controller_read_register -- + * Read controller's register + * + * PARAMETERS: + * minor - minor number of controller + * reg - register to read + * value - placeholder for result + * + * RETURNS + * NONE + */ +void +ide_controller_read_register(rtems_device_minor_number minor, + int reg, + uint16_t *value); + +/* + * ide_controller_write_register -- + * Write controller's register + * + * PARAMETERS: + * minor - minor number of controller + * reg - register to write + * value - value to write + * + * RETURNS: + * NONE + */ +void +ide_controller_write_register(rtems_device_minor_number minor, + int reg, uint16_t value); + +/* + * ide_controller_config_io_speed -- + * Set controller's speed of IO operations + * + * PARAMETERS: + * minor - minor number of controller + * modes_available - speeds available + * + * RETURNS: + * RTEMS_SUCCESSFUL on success, or error code if + * error occured + */ +rtems_status_code +ide_controller_config_io_speed(int minor, uint16_t modes_available); + +#ifdef __cplusplus +} +#endif + + +#endif /* __IDE_CTRL_IO_H__ */ |