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-rw-r--r--drivers/block/Makefile5
-rw-r--r--drivers/block/mg_disk.c582
-rw-r--r--drivers/block/mg_disk_prv.h145
3 files changed, 730 insertions, 2 deletions
diff --git a/drivers/block/Makefile b/drivers/block/Makefile
index 59388d9d45..eccefc1e52 100644
--- a/drivers/block/Makefile
+++ b/drivers/block/Makefile
@@ -25,13 +25,14 @@ include $(TOPDIR)/config.mk
LIB := $(obj)libblock.a
-COBJS-$(CONFIG_SCSI_AHCI) += ahci.o
COBJS-$(CONFIG_ATA_PIIX) += ata_piix.o
+COBJS-$(CONFIG_CMD_MG_DISK) += mg_disk.o
COBJS-$(CONFIG_FSL_SATA) += fsl_sata.o
+COBJS-$(CONFIG_IDE_SIL680) += sil680.o
COBJS-$(CONFIG_LIBATA) += libata.o
COBJS-$(CONFIG_PATA_BFIN) += pata_bfin.o
COBJS-$(CONFIG_SATA_SIL3114) += sata_sil3114.o
-COBJS-$(CONFIG_IDE_SIL680) += sil680.o
+COBJS-$(CONFIG_SCSI_AHCI) += ahci.o
COBJS-$(CONFIG_SCSI_SYM53C8XX) += sym53c8xx.o
COBJS-$(CONFIG_SYSTEMACE) += systemace.o
diff --git a/drivers/block/mg_disk.c b/drivers/block/mg_disk.c
new file mode 100644
index 0000000000..b74307ab6c
--- /dev/null
+++ b/drivers/block/mg_disk.c
@@ -0,0 +1,582 @@
+/*
+ * (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;
+ reset_timer();
+ 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;
+}
+
+block_dev_desc_t *mg_disk_get_dev(int dev)
+{
+ return ((block_dev_desc_t *) & mg_disk_dev);
+}
+
+/* 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
new file mode 100644
index 0000000000..8f22e280be
--- /dev/null
+++ b/drivers/block/mg_disk_prv.h
@@ -0,0 +1,145 @@
+/*
+ * (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
+
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-17 12:41:03 +0000