145 lines
4.5 KiB
C
145 lines
4.5 KiB
C
/*
|
|
* (C) Copyright 2009 mGine co.
|
|
* unsik Kim <donari75@gmail.com>
|
|
*
|
|
* See file CREDITS for list of people who contributed to this
|
|
* project.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as
|
|
* published by the Free Software Foundation; either version 2 of
|
|
* the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
|
|
* MA 02111-1307 USA
|
|
*/
|
|
|
|
#ifndef __MG_DISK_PRV_H__
|
|
#define __MG_DISK_PRV_H__
|
|
|
|
#include <mg_disk.h>
|
|
|
|
/* name for block device */
|
|
#define MG_DISK_NAME "mgd"
|
|
/* name for platform device */
|
|
#define MG_DEV_NAME "mg_disk"
|
|
|
|
#define MG_DISK_MAJ 240
|
|
#define MG_DISK_MAX_PART 16
|
|
#define MG_SECTOR_SIZE 512
|
|
#define MG_SECTOR_SIZE_MASK (512 - 1)
|
|
#define MG_SECTOR_SIZE_SHIFT (9)
|
|
#define MG_MAX_SECTS 256
|
|
|
|
/* Register offsets */
|
|
#define MG_BUFF_OFFSET 0x8000
|
|
#define MG_STORAGE_BUFFER_SIZE 0x200
|
|
#define MG_REG_OFFSET 0xC000
|
|
#define MG_REG_FEATURE (MG_REG_OFFSET + 2) /* write case */
|
|
#define MG_REG_ERROR (MG_REG_OFFSET + 2) /* read case */
|
|
#define MG_REG_SECT_CNT (MG_REG_OFFSET + 4)
|
|
#define MG_REG_SECT_NUM (MG_REG_OFFSET + 6)
|
|
#define MG_REG_CYL_LOW (MG_REG_OFFSET + 8)
|
|
#define MG_REG_CYL_HIGH (MG_REG_OFFSET + 0xA)
|
|
#define MG_REG_DRV_HEAD (MG_REG_OFFSET + 0xC)
|
|
#define MG_REG_COMMAND (MG_REG_OFFSET + 0xE) /* write case */
|
|
#define MG_REG_STATUS (MG_REG_OFFSET + 0xE) /* read case */
|
|
#define MG_REG_DRV_CTRL (MG_REG_OFFSET + 0x10)
|
|
#define MG_REG_BURST_CTRL (MG_REG_OFFSET + 0x12)
|
|
|
|
/* "Drive Select/Head Register" bit values */
|
|
#define MG_REG_HEAD_MUST_BE_ON 0xA0 /* These 2 bits are always on */
|
|
#define MG_REG_HEAD_DRIVE_MASTER (0x00 | MG_REG_HEAD_MUST_BE_ON)
|
|
#define MG_REG_HEAD_DRIVE_SLAVE (0x10 | MG_REG_HEAD_MUST_BE_ON)
|
|
#define MG_REG_HEAD_LBA_MODE (0x40 | MG_REG_HEAD_MUST_BE_ON)
|
|
|
|
|
|
/* "Device Control Register" bit values */
|
|
#define MG_REG_CTRL_INTR_ENABLE 0x0
|
|
#define MG_REG_CTRL_INTR_DISABLE (0x1 << 1)
|
|
#define MG_REG_CTRL_RESET (0x1 << 2)
|
|
#define MG_REG_CTRL_INTR_POLA_ACTIVE_HIGH 0x0
|
|
#define MG_REG_CTRL_INTR_POLA_ACTIVE_LOW (0x1 << 4)
|
|
#define MG_REG_CTRL_DPD_POLA_ACTIVE_LOW 0x0
|
|
#define MG_REG_CTRL_DPD_POLA_ACTIVE_HIGH (0x1 << 5)
|
|
#define MG_REG_CTRL_DPD_DISABLE 0x0
|
|
#define MG_REG_CTRL_DPD_ENABLE (0x1 << 6)
|
|
|
|
/* Status register bit */
|
|
/* error bit in status register */
|
|
#define MG_REG_STATUS_BIT_ERROR 0x01
|
|
/* corrected error in status register */
|
|
#define MG_REG_STATUS_BIT_CORRECTED_ERROR 0x04
|
|
/* data request bit in status register */
|
|
#define MG_REG_STATUS_BIT_DATA_REQ 0x08
|
|
/* DSC - Drive Seek Complete */
|
|
#define MG_REG_STATUS_BIT_SEEK_DONE 0x10
|
|
/* DWF - Drive Write Fault */
|
|
#define MG_REG_STATUS_BIT_WRITE_FAULT 0x20
|
|
#define MG_REG_STATUS_BIT_READY 0x40
|
|
#define MG_REG_STATUS_BIT_BUSY 0x80
|
|
|
|
/* handy status */
|
|
#define MG_STAT_READY (MG_REG_STATUS_BIT_READY | MG_REG_STATUS_BIT_SEEK_DONE)
|
|
#define MG_READY_OK(s) (((s) & (MG_STAT_READY | \
|
|
(MG_REG_STATUS_BIT_BUSY | \
|
|
MG_REG_STATUS_BIT_WRITE_FAULT | \
|
|
MG_REG_STATUS_BIT_ERROR))) == MG_STAT_READY)
|
|
|
|
/* Error register */
|
|
#define MG_REG_ERR_AMNF 0x01
|
|
#define MG_REG_ERR_ABRT 0x04
|
|
#define MG_REG_ERR_IDNF 0x10
|
|
#define MG_REG_ERR_UNC 0x40
|
|
#define MG_REG_ERR_BBK 0x80
|
|
|
|
/* error code for others */
|
|
#define MG_ERR_NONE 0
|
|
#define MG_ERR_TIMEOUT 0x100
|
|
#define MG_ERR_INIT_STAT 0x101
|
|
#define MG_ERR_TRANSLATION 0x102
|
|
#define MG_ERR_CTRL_RST 0x103
|
|
#define MG_ERR_NO_DRV_DATA 0x104
|
|
|
|
#define MG_MAX_ERRORS 16 /* Max read/write errors/sector */
|
|
#define MG_RESET_FREQ 4 /* Reset controller every 4th retry */
|
|
|
|
/* command */
|
|
#define MG_CMD_RD 0x20
|
|
#define MG_CMD_WR 0x30
|
|
#define MG_CMD_SLEEP 0x99
|
|
#define MG_CMD_WAKEUP 0xC3
|
|
#define MG_CMD_ID 0xEC
|
|
#define MG_CMD_WR_CONF 0x3C
|
|
#define MG_CMD_RD_CONF 0x40
|
|
|
|
union mg_uniwb{
|
|
u16 w;
|
|
u8 b[2];
|
|
};
|
|
|
|
/* main structure for mflash driver */
|
|
struct mg_host {
|
|
struct mg_drv_data *drv_data;
|
|
/* for future use */
|
|
};
|
|
|
|
/*
|
|
* Debugging macro and defines
|
|
*/
|
|
#undef DO_MG_DEBUG
|
|
#ifdef DO_MG_DEBUG
|
|
# define MG_DBG(fmt, args...) printf("%s:%d "fmt"\n", __func__, __LINE__,##args)
|
|
#else /* CONFIG_MG_DEBUG */
|
|
# define MG_DBG(fmt, args...) do { } while(0)
|
|
#endif /* CONFIG_MG_DEBUG */
|
|
|
|
#endif
|