Block: Remove MG DISK support

This driver is unused and obsolete.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Wolfgang Denk <wd@denx.de>
Cc: unsik Kim <donari75@gmail.com>

3 files changed, 0 insertions, 731 deletions

diff --git a/drivers/block/Makefile b/drivers/block/Makefile
index b9c2047..f1ebdcc 100644
--- a/drivers/block/Makefile
+++ b/drivers/block/Makefile
@@ -31,7 +31,6 @@ COBJS-$(CONFIG_DWC_AHSATA) += dwc_ahsata.o
 COBJS-$(CONFIG_FSL_SATA) += fsl_sata.o
 COBJS-$(CONFIG_IDE_FTIDE020) += ftide020.o
 COBJS-$(CONFIG_LIBATA) += libata.o
-COBJS-$(CONFIG_CMD_MG_DISK) += mg_disk.o
 COBJS-$(CONFIG_MVSATA_IDE) += mvsata_ide.o
 COBJS-$(CONFIG_MX51_PATA) += mxc_ata.o
 COBJS-$(CONFIG_PATA_BFIN) += pata_bfin.o
diff --git a/drivers/block/mg_disk.c b/drivers/block/mg_disk.c
deleted file mode 100644
index 4407006..0000000
--- a/drivers/block/mg_disk.c
+++ /dev/null
@@ -1,586 +0,0 @@
-/*
- * (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
- */
-
-#include <common.h>
-#include <malloc.h>
-#include <part.h>
-#include <ata.h>
-#include <asm/io.h>
-#include "mg_disk_prv.h"
-
-#ifndef CONFIG_MG_DISK_RES
-#define CONFIG_MG_DISK_RES	0
-#endif
-
-#define MG_RES_SEC ((CONFIG_MG_DISK_RES) << 1)
-
-static struct mg_host host;
-
-static inline u32 mg_base(void)
-{
-	return host.drv_data->base;
-}
-
-static block_dev_desc_t mg_disk_dev = {
-	.if_type = IF_TYPE_ATAPI,
-	.part_type = PART_TYPE_UNKNOWN,
-	.type = DEV_TYPE_HARDDISK,
-	.blksz = MG_SECTOR_SIZE,
-	.priv = &host };
-
-static void mg_dump_status (const char *msg, unsigned int stat, unsigned err)
-{
-	char *name = MG_DEV_NAME;
-
-	printf("%s: %s: status=0x%02x { ", name, msg, stat & 0xff);
-	if (stat & MG_REG_STATUS_BIT_BUSY)
-		printf("Busy ");
-	if (stat & MG_REG_STATUS_BIT_READY)
-		printf("DriveReady ");
-	if (stat & MG_REG_STATUS_BIT_WRITE_FAULT)
-		printf("WriteFault ");
-	if (stat & MG_REG_STATUS_BIT_SEEK_DONE)
-		printf("SeekComplete ");
-	if (stat & MG_REG_STATUS_BIT_DATA_REQ)
-		printf("DataRequest ");
-	if (stat & MG_REG_STATUS_BIT_CORRECTED_ERROR)
-		printf("CorrectedError ");
-	if (stat & MG_REG_STATUS_BIT_ERROR)
-		printf("Error ");
-	printf("}\n");
-
-	if ((stat & MG_REG_STATUS_BIT_ERROR)) {
-		printf("%s: %s: error=0x%02x { ", name, msg, err & 0xff);
-		if (err & MG_REG_ERR_BBK)
-			printf("BadSector ");
-		if (err & MG_REG_ERR_UNC)
-			printf("UncorrectableError ");
-		if (err & MG_REG_ERR_IDNF)
-			printf("SectorIdNotFound ");
-		if (err & MG_REG_ERR_ABRT)
-			printf("DriveStatusError ");
-		if (err & MG_REG_ERR_AMNF)
-			printf("AddrMarkNotFound ");
-		printf("}\n");
-	}
-}
-
-static unsigned int mg_wait (u32 expect, u32 msec)
-{
-	u8 status;
-	u32 from, cur, err;
-
-	err = MG_ERR_NONE;
-#ifdef CONFIG_SYS_LOW_RES_TIMER
-	reset_timer();
-#endif
-	from = get_timer(0);
-
-	status = readb(mg_base() + MG_REG_STATUS);
-	do {
-		cur = get_timer(from);
-		if (status & MG_REG_STATUS_BIT_BUSY) {
-			if (expect == MG_REG_STATUS_BIT_BUSY)
-				break;
-		} else {
-			/* Check the error condition! */
-			if (status & MG_REG_STATUS_BIT_ERROR) {
-				err = readb(mg_base() + MG_REG_ERROR);
-				mg_dump_status("mg_wait", status, err);
-				break;
-			}
-
-			if (expect == MG_STAT_READY)
-				if (MG_READY_OK(status))
-					break;
-
-			if (expect == MG_REG_STATUS_BIT_DATA_REQ)
-				if (status & MG_REG_STATUS_BIT_DATA_REQ)
-					break;
-		}
-		status = readb(mg_base() + MG_REG_STATUS);
-	} while (cur < msec);
-
-	if (cur >= msec)
-		err = MG_ERR_TIMEOUT;
-
-	return err;
-}
-
-static int mg_get_disk_id (void)
-{
-	u16 id[(MG_SECTOR_SIZE / sizeof(u16))];
-	hd_driveid_t *iop = (hd_driveid_t *)id;
-	u32 i, err, res;
-
-	writeb(MG_CMD_ID, mg_base() + MG_REG_COMMAND);
-	err = mg_wait(MG_REG_STATUS_BIT_DATA_REQ, 3000);
-	if (err)
-		return err;
-
-	for(i = 0; i < (MG_SECTOR_SIZE / sizeof(u16)); i++)
-		id[i] = readw(mg_base() + MG_BUFF_OFFSET + i * 2);
-
-	writeb(MG_CMD_RD_CONF, mg_base() + MG_REG_COMMAND);
-	err = mg_wait(MG_STAT_READY, 3000);
-	if (err)
-		return err;
-
-	ata_swap_buf_le16(id, MG_SECTOR_SIZE / sizeof(u16));
-
-	if((iop->field_valid & 1) == 0)
-		return MG_ERR_TRANSLATION;
-
-	ata_id_c_string(id, (unsigned char *)mg_disk_dev.revision,
-			ATA_ID_FW_REV, sizeof(mg_disk_dev.revision));
-	ata_id_c_string(id, (unsigned char *)mg_disk_dev.vendor,
-			ATA_ID_PROD, sizeof(mg_disk_dev.vendor));
-	ata_id_c_string(id, (unsigned char *)mg_disk_dev.product,
-			ATA_ID_SERNO, sizeof(mg_disk_dev.product));
-
-#ifdef __BIG_ENDIAN
-	iop->lba_capacity = (iop->lba_capacity << 16) |
-		(iop->lba_capacity >> 16);
-#endif /* __BIG_ENDIAN */
-
-	if (MG_RES_SEC) {
-		MG_DBG("MG_RES_SEC=%d\n", MG_RES_SEC);
-		iop->cyls = (iop->lba_capacity - MG_RES_SEC) /
-			iop->sectors / iop->heads;
-		res = iop->lba_capacity -
-			iop->cyls * iop->heads * iop->sectors;
-		iop->lba_capacity -= res;
-		printf("mg_disk: %d sectors reserved\n", res);
-	}
-
-	mg_disk_dev.lba = iop->lba_capacity;
-	return MG_ERR_NONE;
-}
-
-static int mg_disk_reset (void)
-{
-	struct mg_drv_data *prv_data = host.drv_data;
-	s32 err;
-	u8 init_status;
-
-	/* hdd rst low */
-	prv_data->mg_hdrst_pin(0);
-	err = mg_wait(MG_REG_STATUS_BIT_BUSY, 300);
-	if(err)
-		return err;
-
-	/* hdd rst high */
-	prv_data->mg_hdrst_pin(1);
-	err = mg_wait(MG_STAT_READY, 3000);
-	if(err)
-		return err;
-
-	/* soft reset on */
-	writeb(MG_REG_CTRL_RESET | MG_REG_CTRL_INTR_DISABLE,
-		mg_base() + MG_REG_DRV_CTRL);
-	err = mg_wait(MG_REG_STATUS_BIT_BUSY, 3000);
-	if(err)
-		return err;
-
-	/* soft reset off */
-	writeb(MG_REG_CTRL_INTR_DISABLE, mg_base() + MG_REG_DRV_CTRL);
-	err = mg_wait(MG_STAT_READY, 3000);
-	if(err)
-		return err;
-
-	init_status = readb(mg_base() + MG_REG_STATUS) & 0xf;
-
-	if (init_status == 0xf)
-		return MG_ERR_INIT_STAT;
-
-	return err;
-}
-
-
-static unsigned int mg_out(unsigned int sect_num,
-			unsigned int sect_cnt,
-			unsigned int cmd)
-{
-	u32 err = MG_ERR_NONE;
-
-	err = mg_wait(MG_STAT_READY, 3000);
-	if (err)
-		return err;
-
-	writeb((u8)sect_cnt, mg_base() + MG_REG_SECT_CNT);
-	writeb((u8)sect_num, mg_base() + MG_REG_SECT_NUM);
-	writeb((u8)(sect_num >> 8), mg_base() + MG_REG_CYL_LOW);
-	writeb((u8)(sect_num >> 16), mg_base() + MG_REG_CYL_HIGH);
-	writeb((u8)((sect_num >> 24) | MG_REG_HEAD_LBA_MODE),
-		mg_base() + MG_REG_DRV_HEAD);
-	writeb(cmd, mg_base() + MG_REG_COMMAND);
-
-	return err;
-}
-
-static unsigned int mg_do_read_sects(void *buff, u32 sect_num, u32 sect_cnt)
-{
-	u32 i, j, err;
-	u8 *buff_ptr = buff;
-	union mg_uniwb uniwb;
-
-	err = mg_out(sect_num, sect_cnt, MG_CMD_RD);
-	if (err)
-		return err;
-
-	for (i = 0; i < sect_cnt; i++) {
-		err = mg_wait(MG_REG_STATUS_BIT_DATA_REQ, 3000);
-		if (err)
-			return err;
-
-		if ((u32)buff_ptr & 1) {
-			for (j = 0; j < MG_SECTOR_SIZE >> 1; j++) {
-				uniwb.w = readw(mg_base() + MG_BUFF_OFFSET
-						+ (j << 1));
-				*buff_ptr++ = uniwb.b[0];
-				*buff_ptr++ = uniwb.b[1];
-			}
-		} else {
-			for(j = 0; j < MG_SECTOR_SIZE >> 1; j++) {
-				*(u16 *)buff_ptr = readw(mg_base() +
-						MG_BUFF_OFFSET + (j << 1));
-				buff_ptr += 2;
-			}
-		}
-		writeb(MG_CMD_RD_CONF, mg_base() + MG_REG_COMMAND);
-
-		MG_DBG("%u (0x%8.8x) sector read", sect_num + i,
-			(sect_num + i) * MG_SECTOR_SIZE);
-	}
-
-	return err;
-}
-
-unsigned int mg_disk_read_sects(void *buff, u32 sect_num, u32 sect_cnt)
-{
-	u32 quotient, residue, i, err;
-	u8 *buff_ptr = buff;
-
-	quotient = sect_cnt >> 8;
-	residue = sect_cnt % 256;
-
-	for (i = 0; i < quotient; i++) {
-		MG_DBG("sect num : %u buff : 0x%8.8x", sect_num, (u32)buff_ptr);
-		err = mg_do_read_sects(buff_ptr, sect_num, 256);
-		if (err)
-			return err;
-		sect_num += 256;
-		buff_ptr += 256 * MG_SECTOR_SIZE;
-	}
-
-	if (residue) {
-		MG_DBG("sect num : %u buff : %8.8x", sect_num, (u32)buff_ptr);
-		err = mg_do_read_sects(buff_ptr, sect_num, residue);
-	}
-
-	return err;
-}
-
-unsigned long mg_block_read (int dev, unsigned long start,
-		lbaint_t blkcnt, void *buffer)
-{
-	start += MG_RES_SEC;
-	if (! mg_disk_read_sects(buffer, start, blkcnt))
-		return blkcnt;
-	else
-		return 0;
-}
-
-unsigned int mg_disk_read (u32 addr, u8 *buff, u32 len)
-{
-	u8 *sect_buff, *buff_ptr = buff;
-	u32 cur_addr, next_sec_addr, end_addr, cnt, sect_num;
-	u32 err = MG_ERR_NONE;
-
-	/* TODO : sanity chk */
-	cnt = 0;
-	cur_addr = addr;
-	end_addr = addr + len;
-
-	sect_buff = malloc(MG_SECTOR_SIZE);
-
-	if (cur_addr & MG_SECTOR_SIZE_MASK) {
-		next_sec_addr = (cur_addr + MG_SECTOR_SIZE) &
-				~MG_SECTOR_SIZE_MASK;
-		sect_num = cur_addr >> MG_SECTOR_SIZE_SHIFT;
-		err = mg_disk_read_sects(sect_buff, sect_num, 1);
-		if (err)
-			goto mg_read_exit;
-
-		if (end_addr < next_sec_addr) {
-			memcpy(buff_ptr,
-				sect_buff + (cur_addr & MG_SECTOR_SIZE_MASK),
-				end_addr - cur_addr);
-			MG_DBG("copies %u byte from sector offset 0x%8.8x",
-				end_addr - cur_addr, cur_addr);
-			cur_addr = end_addr;
-		} else {
-			memcpy(buff_ptr,
-				sect_buff + (cur_addr & MG_SECTOR_SIZE_MASK),
-				next_sec_addr - cur_addr);
-			MG_DBG("copies %u byte from sector offset 0x%8.8x",
-				next_sec_addr - cur_addr, cur_addr);
-			buff_ptr += (next_sec_addr - cur_addr);
-			cur_addr = next_sec_addr;
-		}
-	}
-
-	if (cur_addr < end_addr) {
-		sect_num = cur_addr >> MG_SECTOR_SIZE_SHIFT;
-		cnt = ((end_addr & ~MG_SECTOR_SIZE_MASK) - cur_addr) >>
-			MG_SECTOR_SIZE_SHIFT;
-
-		if (cnt)
-			err = mg_disk_read_sects(buff_ptr, sect_num, cnt);
-		if (err)
-			goto mg_read_exit;
-
-		buff_ptr += cnt * MG_SECTOR_SIZE;
-		cur_addr += cnt * MG_SECTOR_SIZE;
-
-		if (cur_addr < end_addr) {
-			sect_num = cur_addr >> MG_SECTOR_SIZE_SHIFT;
-			err = mg_disk_read_sects(sect_buff, sect_num, 1);
-			if (err)
-				goto mg_read_exit;
-			memcpy(buff_ptr, sect_buff, end_addr - cur_addr);
-			MG_DBG("copies %u byte", end_addr - cur_addr);
-		}
-	}
-
-mg_read_exit:
-	free(sect_buff);
-
-	return err;
-}
-static int mg_do_write_sects(void *buff, u32 sect_num, u32 sect_cnt)
-{
-	u32 i, j, err;
-	u8 *buff_ptr = buff;
-	union mg_uniwb uniwb;
-
-	err = mg_out(sect_num, sect_cnt, MG_CMD_WR);
-	if (err)
-		return err;
-
-	for (i = 0; i < sect_cnt; i++) {
-		err = mg_wait(MG_REG_STATUS_BIT_DATA_REQ, 3000);
-		if (err)
-			return err;
-
-		if ((u32)buff_ptr & 1) {
-			uniwb.b[0] = *buff_ptr++;
-			uniwb.b[1] = *buff_ptr++;
-			writew(uniwb.w, mg_base() + MG_BUFF_OFFSET + (j << 1));
-		} else {
-			for(j = 0; j < MG_SECTOR_SIZE >> 1; j++) {
-				writew(*(u16 *)buff_ptr,
-						mg_base() + MG_BUFF_OFFSET +
-						(j << 1));
-				buff_ptr += 2;
-			}
-		}
-		writeb(MG_CMD_WR_CONF, mg_base() + MG_REG_COMMAND);
-
-		MG_DBG("%u (0x%8.8x) sector write",
-			sect_num + i, (sect_num + i) * MG_SECTOR_SIZE);
-	}
-
-	return err;
-}
-
-unsigned int mg_disk_write_sects(void *buff, u32 sect_num, u32 sect_cnt)
-{
-	u32 quotient, residue, i;
-	u32 err = MG_ERR_NONE;
-	u8 *buff_ptr = buff;
-
-	quotient = sect_cnt >> 8;
-	residue = sect_cnt % 256;
-
-	for (i = 0; i < quotient; i++) {
-		MG_DBG("sect num : %u buff : %8.8x", sect_num, (u32)buff_ptr);
-		err = mg_do_write_sects(buff_ptr, sect_num, 256);
-		if (err)
-			return err;
-		sect_num += 256;
-		buff_ptr += 256 * MG_SECTOR_SIZE;
-	}
-
-	if (residue) {
-		MG_DBG("sect num : %u buff : %8.8x", sect_num, (u32)buff_ptr);
-		err = mg_do_write_sects(buff_ptr, sect_num, residue);
-	}
-
-	return err;
-}
-
-unsigned long mg_block_write (int dev, unsigned long start,
-		lbaint_t blkcnt, const void *buffer)
-{
-	start += MG_RES_SEC;
-	if (!mg_disk_write_sects((void *)buffer, start, blkcnt))
-		return blkcnt;
-	else
-		return 0;
-}
-
-unsigned int mg_disk_write(u32 addr, u8 *buff, u32 len)
-{
-	u8 *sect_buff, *buff_ptr = buff;
-	u32 cur_addr, next_sec_addr, end_addr, cnt, sect_num;
-	u32 err = MG_ERR_NONE;
-
-	/* TODO : sanity chk */
-	cnt = 0;
-	cur_addr = addr;
-	end_addr = addr + len;
-
-	sect_buff = malloc(MG_SECTOR_SIZE);
-
-	if (cur_addr & MG_SECTOR_SIZE_MASK) {
-
-		next_sec_addr = (cur_addr + MG_SECTOR_SIZE) &
-				~MG_SECTOR_SIZE_MASK;
-		sect_num = cur_addr >> MG_SECTOR_SIZE_SHIFT;
-		err = mg_disk_read_sects(sect_buff, sect_num, 1);
-		if (err)
-			goto mg_write_exit;
-
-		if (end_addr < next_sec_addr) {
-			memcpy(sect_buff + (cur_addr & MG_SECTOR_SIZE_MASK),
-				buff_ptr, end_addr - cur_addr);
-			MG_DBG("copies %u byte to sector offset 0x%8.8x",
-				end_addr - cur_addr, cur_addr);
-			cur_addr = end_addr;
-		} else {
-			memcpy(sect_buff + (cur_addr & MG_SECTOR_SIZE_MASK),
-				buff_ptr, next_sec_addr - cur_addr);
-			MG_DBG("copies %u byte to sector offset 0x%8.8x",
-				next_sec_addr - cur_addr, cur_addr);
-			buff_ptr += (next_sec_addr - cur_addr);
-			cur_addr = next_sec_addr;
-		}
-
-		err = mg_disk_write_sects(sect_buff, sect_num, 1);
-		if (err)
-			goto mg_write_exit;
-	}
-
-	if (cur_addr < end_addr) {
-
-		sect_num = cur_addr >> MG_SECTOR_SIZE_SHIFT;
-		cnt = ((end_addr & ~MG_SECTOR_SIZE_MASK) - cur_addr) >>
-			MG_SECTOR_SIZE_SHIFT;
-
-		if (cnt)
-			err = mg_disk_write_sects(buff_ptr, sect_num, cnt);
-		if (err)
-			goto mg_write_exit;
-
-		buff_ptr += cnt * MG_SECTOR_SIZE;
-		cur_addr += cnt * MG_SECTOR_SIZE;
-
-		if (cur_addr < end_addr) {
-			sect_num = cur_addr >> MG_SECTOR_SIZE_SHIFT;
-			err = mg_disk_read_sects(sect_buff, sect_num, 1);
-			if (err)
-				goto mg_write_exit;
-			memcpy(sect_buff, buff_ptr, end_addr - cur_addr);
-			MG_DBG("copies %u byte", end_addr - cur_addr);
-			err = mg_disk_write_sects(sect_buff, sect_num, 1);
-		}
-
-	}
-
-mg_write_exit:
-	free(sect_buff);
-
-	return err;
-}
-
-#ifdef CONFIG_PARTITIONS
-block_dev_desc_t *mg_disk_get_dev(int dev)
-{
-	return ((block_dev_desc_t *) & mg_disk_dev);
-}
-#endif
-
-/* must override this function */
-struct mg_drv_data * __attribute__((weak)) mg_get_drv_data (void)
-{
-	puts ("### WARNING ### port mg_get_drv_data function\n");
-	return NULL;
-}
-
-unsigned int mg_disk_init (void)
-{
-	struct mg_drv_data *prv_data;
-	u32 err = MG_ERR_NONE;
-
-	prv_data = mg_get_drv_data();
-	if (! prv_data) {
-		printf("%s:%d fail (no driver_data)\n", __func__, __LINE__);
-		err = MG_ERR_NO_DRV_DATA;
-		return err;
-	}
-
-	((struct mg_host *)mg_disk_dev.priv)->drv_data = prv_data;
-
-	/* init ctrl pin */
-	if (prv_data->mg_ctrl_pin_init)
-		prv_data->mg_ctrl_pin_init();
-
-	if (! prv_data->mg_hdrst_pin) {
-		err = MG_ERR_CTRL_RST;
-		return err;
-	}
-
-	/* disk reset */
-	err = mg_disk_reset();
-	if (err) {
-		printf("%s:%d fail (err code : %d)\n", __func__, __LINE__, err);
-		return err;
-	}
-
-	/* get disk id */
-	err = mg_get_disk_id();
-	if (err) {
-		printf("%s:%d fail (err code : %d)\n", __func__, __LINE__, err);
-		return err;
-	}
-
-	mg_disk_dev.block_read = mg_block_read;
-	mg_disk_dev.block_write = mg_block_write;
-
-	init_part(&mg_disk_dev);
-
-	dev_print(&mg_disk_dev);
-
-	return err;
-}
diff --git a/drivers/block/mg_disk_prv.h b/drivers/block/mg_disk_prv.h
deleted file mode 100644
index 43e90ea..0000000
--- a/drivers/block/mg_disk_prv.h
+++ /dev/null
@@ -1,144 +0,0 @@
-/*
- * (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