diff mbox

[U-Boot] ftsdc010: add support of ftsdc010 mmc controller

Message ID 1310112099-23289-1-git-send-email-macpaul@andestech.com
State Superseded
Headers show

Commit Message

Macpaul Lin July 8, 2011, 8:01 a.m. UTC 
Faraday FTSDC010 controller is a SD/MMC controller for SoC chip.

Signed-off-by: Macpaul Lin <macpaul@andestech.com>
---
 drivers/mmc/Makefile         |    1 +
 drivers/mmc/ftsdc010_esdhc.c |  666 ++++++++++++++++++++++++++++++++++++++++++
 include/faraday/ftsdc010.h   |  245 ++++++++++++++++
 3 files changed, 912 insertions(+), 0 deletions(-)
 create mode 100644 drivers/mmc/ftsdc010_esdhc.c
 create mode 100644 include/faraday/ftsdc010.h

Comments

Macpaul Lin July 8, 2011, 8:37 a.m. UTC | #1 
Hi all

2011/7/8 Macpaul Lin <macpaul@gmail.com>:
> Faraday FTSDC010 controller is a SD/MMC controller for SoC chip.
>
> Signed-off-by: Macpaul Lin <macpaul@andestech.com>

Sorry for the mail server has problem again.
I've send 2 patches which is exactly the same one to the mailist.
I'll delete one of the patch in patchwork.
http://patchwork.ozlabs.org/patch/103776/

Please review the other one.
Thanks.
Andy Fleming July 18, 2011, 4:39 p.m. UTC | #2 
On Fri, Jul 8, 2011 at 3:01 AM, Macpaul Lin <macpaul@gmail.com> wrote:
> + */
> +static struct mmc mmc_dev[CONFIG_FTSDC010_NUMBER];
> +static struct mmc_host mmc_host[CONFIG_FTSDC010_NUMBER];

Probably should have less generic names for all of these.

> +
> +static struct ftsdc010_mmc *ftsdc010_get_base_mmc(int dev_index)
> +{
> +       unsigned long offset = dev_index * sizeof(struct ftsdc010_mmc);
> +       return (struct ftsdc010_mmc *)(CONFIG_FTSDC010_BASE + offset);

This might be clearer as straightforward pointer math:

return (struct ftsdc010_mmc *)(CONFIG_FTSDC010_BASE) + dev_index;


> +
> +static void mmc_pio_read(struct mmc_host *host, char *buf, unsigned int size)

This is a very generic name


> +
> +static int mmc_pio_check_status(struct mmc *mmc, struct mmc_cmd *cmd,
> +                       struct mmc_data *data)
> +{
> +       struct mmc_host *host = (struct mmc_host *)mmc->priv;

This cast is unnecessary. A void * can be cast to another pointer type
without a cast, and that is the preferred style.

> +
> +       unsigned int sta, clear;
> +       unsigned int i;
> +
> +       /* check response and hardware status */
> +       clear = 0;
> +
> +       /* chech CMD_SEND */
> +       for (i = 0; i < FTSDC010_CMD_RETRY; i++) {
> +               sta = readl(&host->reg->status);
> +               /* Command Complete */
> +               if (sta & FTSDC010_STATUS_CMD_SEND) {
> +                       if (!data)
> +                               clear |= FTSDC010_CLR_CMD_SEND;
> +                       break;
> +               }
> +       }
> +
> +       if (i > FTSDC010_CMD_RETRY) {
> +               printf("%s: send command timeout\n", __func__);
> +               return TIMEOUT;
> +       }
> +
> +       /* debug: print status register and command index*/
> +       debug("sta: %08x cmd %d\n", sta, cmd->cmdidx);
> +
> +       /* handle data FIFO */
> +       if ((sta & FTSDC010_STATUS_FIFO_ORUN) ||
> +               (sta & FTSDC010_STATUS_FIFO_URUN)) {
> +
> +               /* Wrong DATA FIFO Flag */
> +               if (data == NULL)
> +                       printf("%s, data fifo wrong: sta: %08x cmd %d\n",
> +                               __func__, sta, cmd->cmdidx);
> +
> +               if (sta & FTSDC010_STATUS_FIFO_ORUN)
> +                       clear |= FTSDC010_STATUS_FIFO_ORUN;
> +               if (sta & FTSDC010_STATUS_FIFO_URUN)
> +                       clear |= FTSDC010_STATUS_FIFO_URUN;
> +       }
> +
> +       /* check RSP TIMEOUT or FAIL */
> +       if (sta & FTSDC010_STATUS_RSP_TIMEOUT) {
> +               /* RSP TIMEOUT */
> +               debug("%s: RSP timeout: sta: %08x cmd %d\n",
> +                               __func__, sta, cmd->cmdidx);
> +
> +               clear |= FTSDC010_CLR_RSP_TIMEOUT;
> +               writel(clear, &host->reg->clr);
> +
> +               return TIMEOUT;
> +       } else if (sta & FTSDC010_STATUS_RSP_CRC_FAIL) {
> +               /* clear response fail bit */
> +               debug("%s: RSP CRC FAIL: sta: %08x cmd %d\n",
> +                               __func__, sta, cmd->cmdidx);
> +
> +               clear |= FTSDC010_CLR_RSP_CRC_FAIL;
> +               writel(clear, &host->reg->clr);
> +
> +               return -1;
> +       } else if (sta & FTSDC010_STATUS_RSP_CRC_OK) {
> +
> +               /* clear response CRC OK bit */
> +               clear |= FTSDC010_CLR_RSP_CRC_OK;
> +       }
> +
> +       /* check DATA TIMEOUT or FAIL */
> +       if (data) {
> +               if (sta & FTSDC010_STATUS_DATA_TIMEOUT) {
> +                       /* DATA TIMEOUT */
> +                       debug("%s: DATA TIMEOUT: sta: %08x\n",
> +                                       __func__, sta);
> +
> +                       clear |= FTSDC010_STATUS_DATA_TIMEOUT;
> +                       writel(sta, &host->reg->clr);
> +                       return TIMEOUT;
> +               } else if (sta & FTSDC010_STATUS_DATA_CRC_FAIL) {
> +                       /* Error Interrupt */
> +                       debug("%s: DATA CRC FAIL: sta: %08x\n",
> +                                       __func__, sta);
> +
> +                       clear |= FTSDC010_STATUS_DATA_CRC_FAIL;
> +                       writel(clear, &host->reg->clr);
> +
> +                       return -1;
> +               } else if (sta & FTSDC010_STATUS_DATA_END) {
> +                       /* Transfer Complete */
> +                       clear |= FTSDC010_STATUS_DATA_END;
> +               }
> +       }
> +
> +       /* transaction is success and clear status register */
> +       writel(sta, &host->reg->clr);


I'm confused by the use of the "clear" variable. Some of the if
clauses are totally useless, because "clear" is never read after being
written. And some of the users of clear don't clear all of the status
bits. Are you going to come back around and read the bits you didn't
clear? If it's always safe to write "sta" to "clr", then why not just
do that every time, and remove the "clear" variable?


> +
> +       return 0;
> +}
> +
> +static int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
> +                       struct mmc_data *data)


This name actually conflicts with the global mmc framework's command
name.  It would be much better if you named it something like
ftsdc010_send_cmd()



> +static int ftsdc010_setup_data(struct mmc *mmc, struct mmc_data *data)
> +{
> +       struct mmc_host *host = (struct mmc_host *)mmc->priv;
> +       unsigned int dcon, newmask;
> +
> +       /* configure data transfer paramter */
> +       if (!data)
> +               return 0;
> +
> +       if (((data->blocksize - 1) & data->blocksize) != 0) {
> +               printf("%s: can't do non-power-of 2 sized block transfers"
> +                       " (blksz %d)\n", __func__, data->blocksize);
> +               return -1;
> +       }
> +
> +       if (data->blocksize <= 2) {
> +               /* We cannot deal with unaligned blocks with more than
> +                * one block being transfered. */
> +
> +               if (data->blocks > 1) {
> +                       printf("%s: can't do non-word sized block transfers"
> +                               " (blksz %d)\n", __func__, data->blocksize);
> +                       return -1;
> +               }
> +       }

I'd put these two conditions in one if statement (if (size <= 2) &&
(blocks > 1)).



Make name more specific to this controller


> +
> +static void mmc_reset(struct mmc_host *host)

Change the name


> +static int mmc_core_init(struct mmc *mmc)

Change this name, too



> diff --git a/include/faraday/ftsdc010.h b/include/faraday/ftsdc010.h
> new file mode 100644
> index 0000000..b6e44a8
> --- /dev/null
> +++ b/include/faraday/ftsdc010.h

> +struct mmc_host {

Change this name

Andy
elen.song July 21, 2011, 1:49 a.m. UTC | #3 
Hello Dear Andy:
	I found in env_mmc.c, mmc_get_env_addr(...)only do *env_addr = CONFIG_ENV_OFFSET.If CONFIG_ENV_OFFSET is defined in partition space,the raw data may cover the env.IF CONFIG_ENV_OFFSET = 0,will it damage MBR?Should it do some protection methods?

Thank you very much
Elen.song
diff mbox

Patch

diff --git a/drivers/mmc/Makefile b/drivers/mmc/Makefile
index a8fe17a..a8a8a9b 100644
--- a/drivers/mmc/Makefile
+++ b/drivers/mmc/Makefile
@@ -29,6 +29,7 @@  COBJS-$(CONFIG_ATMEL_MCI) += atmel_mci.o
 COBJS-$(CONFIG_BFIN_SDH) += bfin_sdh.o
 COBJS-$(CONFIG_DAVINCI_MMC) += davinci_mmc.o
 COBJS-$(CONFIG_FSL_ESDHC) += fsl_esdhc.o
+COBJS-$(CONFIG_FTSDC010) += ftsdc010_esdhc.o
 COBJS-$(CONFIG_GENERIC_MMC) += mmc.o
 COBJS-$(CONFIG_GENERIC_ATMEL_MCI) += gen_atmel_mci.o
 COBJS-$(CONFIG_MMC_SPI) += mmc_spi.o
diff --git a/drivers/mmc/ftsdc010_esdhc.c b/drivers/mmc/ftsdc010_esdhc.c
new file mode 100644
index 0000000..0c2c952
--- /dev/null
+++ b/drivers/mmc/ftsdc010_esdhc.c
@@ -0,0 +1,666 @@ 
+/*
+ * Copyright (C) 2011 Andes Technology Corporation
+ * Macpaul Lin, Andes Technology Corporation <macpaul@andestech.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 <config.h>
+#include <common.h>
+#include <mmc.h>
+
+#include <asm/io.h>
+#include <faraday/ftsdc010.h>
+
+/*
+ * supported mmc hosts
+ * setting the number CONFIG_FTSDC010_NUMBER in your configuration file.
+ */
+static struct mmc mmc_dev[CONFIG_FTSDC010_NUMBER];
+static struct mmc_host mmc_host[CONFIG_FTSDC010_NUMBER];
+
+static struct ftsdc010_mmc *ftsdc010_get_base_mmc(int dev_index)
+{
+	unsigned long offset = dev_index * sizeof(struct ftsdc010_mmc);
+	return (struct ftsdc010_mmc *)(CONFIG_FTSDC010_BASE + offset);
+}
+
+#ifdef DEBUG
+static void ftsdc010_dump_reg(struct mmc_host *host)
+{
+	debug("cmd: %08x\n",		readl(&host->reg->cmd));
+	debug("argu: %08x\n",		readl(&host->reg->argu));
+	debug("rsp0: %08x\n",		readl(&host->reg->rsp0));
+	debug("rsp1: %08x\n",		readl(&host->reg->rsp1));
+	debug("rsp2: %08x\n",		readl(&host->reg->rsp2));
+	debug("rsp3: %08x\n",		readl(&host->reg->rsp3));
+	debug("rsp_cmd: %08x\n",	readl(&host->reg->rsp_cmd));
+	debug("dcr: %08x\n",		readl(&host->reg->dcr));
+	debug("dtr: %08x\n",		readl(&host->reg->dtr));
+	debug("dlr: %08x\n",		readl(&host->reg->dlr));
+	debug("status: %08x\n",		readl(&host->reg->status));
+	debug("clr: %08x\n",		readl(&host->reg->clr));
+	debug("int_mask: %08x\n",	readl(&host->reg->int_mask));
+	debug("pcr: %08x\n",		readl(&host->reg->pcr));
+	debug("ccr: %08x\n",		readl(&host->reg->ccr));
+	debug("bwr: %08x\n",		readl(&host->reg->bwr));
+	debug("dwr: %08x\n",		readl(&host->reg->dwr));
+	debug("feature: %08x\n",	readl(&host->reg->feature));
+	debug("rev: %08x\n",		readl(&host->reg->rev));
+}
+#endif
+
+static unsigned int enable_imask(struct ftsdc010_mmc *reg, unsigned int imask)
+{
+	unsigned int newmask;
+
+	newmask = readl(&reg->int_mask);
+	newmask |= imask;
+
+	writel(newmask, &reg->int_mask);
+
+	return newmask;
+}
+
+static void mmc_pio_read(struct mmc_host *host, char *buf, unsigned int size)
+{
+	unsigned int fifo;
+	unsigned int fifo_words;
+	unsigned int *ptr;
+	unsigned int status;
+	unsigned int retry = 0;
+
+	/* get_data_buffer */
+	ptr = (unsigned int *)buf;
+
+	while (size) {
+		status = readl(&host->reg->status);
+
+		if (status & FTSDC010_STATUS_FIFO_ORUN) {
+			fifo = host->fifo_len > size ?
+				size : host->fifo_len;
+
+			size -= fifo;
+
+			fifo_words = fifo >> 2;
+
+			while (fifo_words--)
+				*ptr++ = readl(&host->reg->dwr);
+
+			/*
+			 * for adding some delays for SD card to put
+			 * data into FIFO again
+			 */
+			udelay(4*FTSDC010_DELAY_UNIT);
+
+#ifdef CONFIG_FTSDC010_SDIO
+			/* sdio allow non-power-of-2 blksz */
+			if (fifo & 3) {
+				unsigned int n = fifo & 3;
+				unsigned int data = readl(&host->reg->dwr);
+
+				unsigned char *p = (unsigned char *)ptr;
+
+				while (n--) {
+					*p++ = data;
+					data >>= 8;
+				}
+			}
+#endif
+		} else {
+			udelay(1);
+			if (++retry >= FTSDC010_PIO_RETRY) {
+				debug("%s: PIO_RETRY timeout\n", __func__);
+				return;
+			}
+		}
+	}
+}
+
+static void mmc_pio_write(struct mmc_host *host, const char *buf,
+			unsigned int size)
+{
+	unsigned int fifo;
+	unsigned int *ptr;
+	unsigned int status;
+	unsigned int retry = 0;
+
+	/* get data buffer */
+	ptr = (unsigned int *)buf;
+
+	while (size) {
+		status = readl(&host->reg->status);
+
+		if (status & FTSDC010_STATUS_FIFO_ORUN) {
+			fifo = host->fifo_len > size ?
+				size : host->fifo_len;
+
+			size -= fifo;
+
+			fifo = (fifo + 3) >> 2;
+
+			while (fifo--) {
+				writel(*ptr, &host->reg->dwr);
+				ptr++;
+			}
+
+		} else {
+			udelay(1);
+			if (++retry >= FTSDC010_PIO_RETRY) {
+				debug("%s: PIO_RETRY timeout\n", __func__);
+				return;
+			}
+		}
+	}
+}
+
+static int mmc_pio_check_status(struct mmc *mmc, struct mmc_cmd *cmd,
+			struct mmc_data *data)
+{
+	struct mmc_host *host = (struct mmc_host *)mmc->priv;
+
+	unsigned int sta, clear;
+	unsigned int i;
+
+	/* check response and hardware status */
+	clear = 0;
+
+	/* chech CMD_SEND */
+	for (i = 0; i < FTSDC010_CMD_RETRY; i++) {
+		sta = readl(&host->reg->status);
+		/* Command Complete */
+		if (sta & FTSDC010_STATUS_CMD_SEND) {
+			if (!data)
+				clear |= FTSDC010_CLR_CMD_SEND;
+			break;
+		}
+	}
+
+	if (i > FTSDC010_CMD_RETRY) {
+		printf("%s: send command timeout\n", __func__);
+		return TIMEOUT;
+	}
+
+	/* debug: print status register and command index*/
+	debug("sta: %08x cmd %d\n", sta, cmd->cmdidx);
+
+	/* handle data FIFO */
+	if ((sta & FTSDC010_STATUS_FIFO_ORUN) ||
+		(sta & FTSDC010_STATUS_FIFO_URUN)) {
+
+		/* Wrong DATA FIFO Flag */
+		if (data == NULL)
+			printf("%s, data fifo wrong: sta: %08x cmd %d\n",
+				__func__, sta, cmd->cmdidx);
+
+		if (sta & FTSDC010_STATUS_FIFO_ORUN)
+			clear |= FTSDC010_STATUS_FIFO_ORUN;
+		if (sta & FTSDC010_STATUS_FIFO_URUN)
+			clear |= FTSDC010_STATUS_FIFO_URUN;
+	}
+
+	/* check RSP TIMEOUT or FAIL */
+	if (sta & FTSDC010_STATUS_RSP_TIMEOUT) {
+		/* RSP TIMEOUT */
+		debug("%s: RSP timeout: sta: %08x cmd %d\n",
+				__func__, sta, cmd->cmdidx);
+
+		clear |= FTSDC010_CLR_RSP_TIMEOUT;
+		writel(clear, &host->reg->clr);
+
+		return TIMEOUT;
+	} else if (sta & FTSDC010_STATUS_RSP_CRC_FAIL) {
+		/* clear response fail bit */
+		debug("%s: RSP CRC FAIL: sta: %08x cmd %d\n",
+				__func__, sta, cmd->cmdidx);
+
+		clear |= FTSDC010_CLR_RSP_CRC_FAIL;
+		writel(clear, &host->reg->clr);
+
+		return -1;
+	} else if (sta & FTSDC010_STATUS_RSP_CRC_OK) {
+
+		/* clear response CRC OK bit */
+		clear |= FTSDC010_CLR_RSP_CRC_OK;
+	}
+
+	/* check DATA TIMEOUT or FAIL */
+	if (data) {
+		if (sta & FTSDC010_STATUS_DATA_TIMEOUT) {
+			/* DATA TIMEOUT */
+			debug("%s: DATA TIMEOUT: sta: %08x\n",
+					__func__, sta);
+
+			clear |= FTSDC010_STATUS_DATA_TIMEOUT;
+			writel(sta, &host->reg->clr);
+			return TIMEOUT;
+		} else if (sta & FTSDC010_STATUS_DATA_CRC_FAIL) {
+			/* Error Interrupt */
+			debug("%s: DATA CRC FAIL: sta: %08x\n",
+					__func__, sta);
+
+			clear |= FTSDC010_STATUS_DATA_CRC_FAIL;
+			writel(clear, &host->reg->clr);
+
+			return -1;
+		} else if (sta & FTSDC010_STATUS_DATA_END) {
+			/* Transfer Complete */
+			clear |= FTSDC010_STATUS_DATA_END;
+		}
+	}
+
+	/* transaction is success and clear status register */
+	writel(sta, &host->reg->clr);
+
+	return 0;
+}
+
+static int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
+			struct mmc_data *data)
+{
+	struct mmc_host *host = (struct mmc_host *)mmc->priv;
+
+	unsigned int ccon;
+	unsigned int mask, tmpmask;
+	unsigned int ret;
+
+	if (data)
+		mask = FTSDC010_INT_MASK_RSP_TIMEOUT;
+	else if (cmd->resp_type & MMC_RSP_PRESENT)
+		mask = FTSDC010_INT_MASK_RSP_TIMEOUT;
+	else
+		mask = FTSDC010_INT_MASK_CMD_SEND;
+
+	/* write argu reg */
+	debug("%s: cmd->arg: %08x\n", __func__, cmd->cmdarg);
+	writel(cmd->cmdarg, &host->reg->argu);
+
+	/* setup cmd reg */
+	debug("cmd: %d\n", cmd->cmdidx);
+	debug("resp: %08x\n", cmd->resp_type);
+
+	/* setup commnad */
+	ccon = FTSDC010_CMD_IDX(cmd->cmdidx);
+
+	/* setup command flags */
+	ccon |= FTSDC010_CMD_CMD_EN;
+
+	/*
+	 * This hardware didn't support specific commands for mapping
+	 * MMC_RSP_BUSY and MMC_RSP_OPCODE. Hence we don't deal with it.
+	 */
+	if (cmd->resp_type & MMC_RSP_PRESENT) {
+		ccon |= FTSDC010_CMD_NEED_RSP;
+		mask |= FTSDC010_INT_MASK_RSP_CRC_OK |
+			FTSDC010_INT_MASK_RSP_CRC_FAIL;
+	}
+
+	if (cmd->resp_type & MMC_RSP_136)
+		ccon |= FTSDC010_CMD_LONG_RSP;
+
+	/* In Linux driver, MMC_CMD_APP_CMD is checked in last_opcode */
+	if (host->last_opcode == MMC_CMD_APP_CMD)
+		ccon |= FTSDC010_CMD_APP_CMD;
+
+#ifdef CONFIG_FTSDC010_SDIO
+	scon = readl(&host->reg->sdio_ctrl1);
+	if (host->mmc->card != NULL && mmc_card_sdio(host->mmc->card))
+		scon |= FTSDC010_SDIO_CTRL1_SDIO_ENABLE;
+	else
+		scon &= ~FTSDC010_SDIO_CTRL1_SDIO_ENABLE;
+	writel(scon, &host->reg->sdio_ctrl1);
+#endif
+
+	/* record last opcode for specifing the command type to hardware */
+	host->last_opcode = cmd->cmdidx;
+
+	/* write int_mask reg */
+	tmpmask = readl(&host->reg->int_mask);
+	tmpmask |= mask;
+	writel(tmpmask, &host->reg->int_mask);
+
+	/* write cmd reg */
+	debug("%s: ccon: %08x\n", __func__, ccon);
+	writel(ccon, &host->reg->cmd);
+	udelay(4*FTSDC010_DELAY_UNIT);
+
+	/* read/write data */
+	if (data && (data->flags & MMC_DATA_READ)) {
+		mmc_pio_read(host, data->dest,
+				data->blocksize * data->blocks);
+	} else if (data && (data->flags & MMC_DATA_WRITE)) {
+		mmc_pio_write(host, data->src,
+				data->blocksize * data->blocks);
+	}
+
+	/* pio check response status */
+	ret = mmc_pio_check_status(mmc, cmd, data);
+	if (!ret) {
+		/* if it is long response */
+		if (ccon & FTSDC010_CMD_LONG_RSP) {
+			cmd->response[0] = readl(&host->reg->rsp3);
+			cmd->response[1] = readl(&host->reg->rsp2);
+			cmd->response[2] = readl(&host->reg->rsp1);
+			cmd->response[3] = readl(&host->reg->rsp0);
+
+		} else {
+			cmd->response[0] = readl(&host->reg->rsp0);
+		}
+	}
+
+	udelay(FTSDC010_DELAY_UNIT);
+	return ret;
+}
+
+static unsigned int cal_blksz(unsigned int blksz)
+{
+	unsigned int blksztwo = 0;
+
+	while (blksz >>= 1)
+		blksztwo++;
+
+	return blksztwo;
+}
+
+static int ftsdc010_setup_data(struct mmc *mmc, struct mmc_data *data)
+{
+	struct mmc_host *host = (struct mmc_host *)mmc->priv;
+	unsigned int dcon, newmask;
+
+	/* configure data transfer paramter */
+	if (!data)
+		return 0;
+
+	if (((data->blocksize - 1) & data->blocksize) != 0) {
+		printf("%s: can't do non-power-of 2 sized block transfers"
+			" (blksz %d)\n", __func__, data->blocksize);
+		return -1;
+	}
+
+	if (data->blocksize <= 2) {
+		/* We cannot deal with unaligned blocks with more than
+		 * one block being transfered. */
+
+		if (data->blocks > 1) {
+			printf("%s: can't do non-word sized block transfers"
+				" (blksz %d)\n", __func__, data->blocksize);
+			return -1;
+		}
+	}
+
+	/* data length */
+	dcon = data->blocksize * data->blocks;
+	writel(dcon, &host->reg->dlr);
+
+	/* write data control */
+	dcon = cal_blksz(data->blocksize);
+
+	/* add to IMASK register */
+	newmask = (FTSDC010_STATUS_RSP_CRC_FAIL | FTSDC010_STATUS_DATA_TIMEOUT);
+
+	/*
+	 * enable UNDERRUN will trigger interrupt immediatedly
+	 * So setup it when rsp is received successfully
+	 */
+	if (data->flags & MMC_DATA_WRITE) {
+		dcon |= FTSDC010_DCR_DATA_WRITE;
+	} else {
+		dcon &= ~FTSDC010_DCR_DATA_WRITE;
+		newmask |= FTSDC010_STATUS_FIFO_ORUN;
+	}
+	enable_imask(host->reg, newmask);
+
+#ifdef CONFIG_FTSDC010_SDIO
+	/* always reset fifo since last transfer may fail */
+	dcon |= FTSDC010_DCR_FIFO_RST;
+
+	/* handle sdio */
+	dcon = data->blocksize | data->blocks << 15;
+	if (data->blocks > 1)
+		dcon |= FTSDC010_SDIO_CTRL1_SDIO_BLK_MODE;
+#endif
+
+	/* enable data transfer which will be pended until cmd is send */
+	dcon |= FTSDC010_DCR_DATA_EN;
+	writel(dcon, &host->reg->dcr);
+
+	return 0;
+}
+
+static int ftsdc010_send_request(struct mmc *mmc, struct mmc_cmd *cmd,
+			struct mmc_data *data)
+{
+	int ret;
+
+	if (data) {
+		ret = ftsdc010_setup_data(mmc, data);
+
+		if (ret) {
+			printf("%s: setup data error\n", __func__);
+			return -1;
+		}
+
+		if ((data->flags & MMC_DATA_BOTH_DIR) == MMC_DATA_BOTH_DIR) {
+			printf("%s: data is both direction\n", __func__);
+			return -1;
+		}
+	}
+
+	/* Send command */
+	ret = mmc_send_cmd(mmc, cmd, data);
+	return ret;
+}
+
+static int ftsdc010_card_detect(struct mmc *mmc)
+{
+	struct mmc_host *host = (struct mmc_host *)mmc->priv;
+	unsigned int sta;
+
+	sta = readl(&host->reg->status);
+	debug("%s: card status: %08x\n", __func__, sta);
+
+	return (sta & FTSDC010_STATUS_CARD_DETECT) ? 0 : 1;
+}
+
+static int ftsdc010_request(struct mmc *mmc, struct mmc_cmd *cmd,
+			struct mmc_data *data)
+{
+	int ret;
+
+	if (ftsdc010_card_detect(mmc) == 0) {
+		printf("%s: no medium present\n", __func__);
+		return -1;
+	} else {
+		ret = ftsdc010_send_request(mmc, cmd, data);
+		return ret;
+	}
+}
+
+static void ftsdc010_set_clk(struct mmc *mmc)
+{
+	struct mmc_host *host = mmc->priv;
+	unsigned char clk_div;
+	unsigned char real_rate;
+	unsigned int clock;
+
+	debug("%s: mmc_set_clock: %x\n", __func__, mmc->clock);
+	clock = readl(&host->reg->ccr);
+
+	if (mmc->clock == 0) {
+		real_rate = 0;
+		clock |= FTSDC010_CCR_CLK_DIS;
+	} else {
+		debug("%s, mmc->clock: %08x, origin clock: %08x\n",
+			 __func__, mmc->clock, clock);
+
+		for (clk_div = 0; clk_div <= 127; clk_div++) {
+			real_rate = (CONFIG_SYS_CLK_FREQ / 2) /
+					(2 * (clk_div + 1));
+
+			if (real_rate <= mmc->clock)
+				break;
+		}
+
+		debug("%s: computed real_rete: %x, clk_div: %x\n",
+			 __func__, real_rate, clk_div);
+
+		if (clk_div > 127)
+			debug("%s: no match clock rate, %x\n",
+				__func__, mmc->clock);
+
+		clock = (clock & ~FTSDC010_CCR_CLK_DIV(0x7f)) |
+				FTSDC010_CCR_CLK_DIV(clk_div);
+
+		clock &= ~FTSDC010_CCR_CLK_DIS;
+	}
+
+	debug("%s, set clock: %08x\n", __func__, clock);
+	writel(clock, &host->reg->ccr);
+}
+
+static void mmc_set_ios(struct mmc *mmc)
+{
+	struct mmc_host *host = mmc->priv;
+	unsigned int power;
+	unsigned long val;
+	unsigned int bus_width;
+
+	debug("%s: bus_width: %x, clock: %d\n",
+		__func__, mmc->bus_width, mmc->clock);
+
+	/* set pcr: power on */
+	power = readl(&host->reg->pcr);
+	power |= FTSDC010_PCR_POWER_ON;
+	writel(power, &host->reg->pcr);
+
+	if (mmc->clock)
+		ftsdc010_set_clk(mmc);
+
+	/* set bwr: bus width reg */
+	bus_width = readl(&host->reg->bwr);
+	bus_width &= ~(FTSDC010_BWR_WIDE_8_BUS | FTSDC010_BWR_WIDE_4_BUS |
+			FTSDC010_BWR_SINGLE_BUS);
+
+	if (mmc->bus_width == 8)
+		bus_width |= FTSDC010_BWR_WIDE_8_BUS;
+	else if (mmc->bus_width == 4)
+		bus_width |= FTSDC010_BWR_WIDE_4_BUS;
+	else
+		bus_width |= FTSDC010_BWR_SINGLE_BUS;
+
+	writel(bus_width, &host->reg->bwr);
+
+	/* set fifo depth */
+	val = readl(&host->reg->feature);
+	host->fifo_len = FTSDC010_FEATURE_FIFO_DEPTH(val) * 4; /* 4 bytes */
+
+	/* set data timeout register */
+	val = -1;
+	writel(val, &host->reg->dtr);
+}
+
+static void mmc_reset(struct mmc_host *host)
+{
+	unsigned int timeout;
+
+	/* Do SDC_RST: Software reset for all register */
+	writel(FTSDC010_CMD_SDC_RST, &host->reg->cmd);
+
+	host->clock = 0;
+
+	/* this hardware has no reset finish flag to read */
+	/* wait 100ms maximum */
+	timeout = 100;
+
+	/* hw clears the bit when it's done */
+	while (readl(&host->reg->dtr) != 0) {
+		if (timeout == 0) {
+			printf("%s: reset timeout error\n", __func__);
+			return;
+		}
+		timeout--;
+		udelay(10*FTSDC010_DELAY_UNIT);
+	}
+}
+
+static int mmc_core_init(struct mmc *mmc)
+{
+	struct mmc_host *host = (struct mmc_host *)mmc->priv;
+	unsigned int mask;
+	unsigned int major, minor, revision;
+
+	/* get hardware version */
+	host->version = readl(&host->reg->rev);
+
+	major = FTSDC010_REV_MAJOR(host->version);
+	minor = FTSDC010_REV_MINOR(host->version);
+	revision = FTSDC010_REV_REVISION(host->version);
+
+	printf("ftsdc010 hardware ver: %d_%d_r%d\n", major, minor, revision);
+
+	/* Interrupt MASK register init - mask all */
+	writel(0x0, &host->reg->int_mask);
+
+	mask = FTSDC010_INT_MASK_CMD_SEND |
+		FTSDC010_INT_MASK_DATA_END |
+		FTSDC010_INT_MASK_CARD_CHANGE;
+#ifdef CONFIG_FTSDC010_SDIO
+	mask |= FTSDC010_INT_MASK_CP_READY |
+		FTSDC010_INT_MASK_CP_BUF_READY |
+		FTSDC010_INT_MASK_PLAIN_TEXT_READY |
+		FTSDC010_INT_MASK_SDIO_IRPT;
+#endif
+
+	writel(mask, &host->reg->int_mask);
+
+	return 0;
+}
+
+int ftsdc010_mmc_init(int dev_index)
+{
+	struct mmc *mmc;
+	struct mmc_host *host;
+
+	mmc = &mmc_dev[dev_index];
+
+	sprintf(mmc->name, "FTSDC010 SD/MMC");
+	mmc->priv = &mmc_host[dev_index];
+	mmc->send_cmd = ftsdc010_request;
+	mmc->set_ios = mmc_set_ios;
+	mmc->init = mmc_core_init;
+
+	mmc->voltages = MMC_VDD_32_33 | MMC_VDD_33_34;
+
+	mmc->host_caps = MMC_MODE_4BIT | MMC_MODE_8BIT;
+
+	mmc->host_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS;
+
+	mmc->f_min = CONFIG_SYS_CLK_FREQ / 2 / (2*128);
+	mmc->f_max = CONFIG_SYS_CLK_FREQ / 2 / 2;
+
+	mmc_host[dev_index].clock = 0;
+	mmc_host[dev_index].reg = ftsdc010_get_base_mmc(dev_index);
+	mmc_register(mmc);
+
+	/* reset mmc */
+	host = (struct mmc_host *)mmc->priv;
+	mmc_reset(host);
+
+	return 0;
+}
diff --git a/include/faraday/ftsdc010.h b/include/faraday/ftsdc010.h
new file mode 100644
index 0000000..b6e44a8
--- /dev/null
+++ b/include/faraday/ftsdc010.h
@@ -0,0 +1,245 @@ 
+/*
+ * Faraday FTSDC010 Secure Digital Memory Card Host Controller
+ *
+ * Copyright (C) 2011 Andes Technology Corporation
+ * Macpaul Lin, Andes Technology Corporation <macpaul@andestech.com>
+ *
+ * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef __FTSDC010_H
+#define __FTSDC010_H
+
+#ifndef __ASSEMBLY__
+/* sd controller register */
+struct ftsdc010_mmc {
+	unsigned int	cmd;		/* 0x00 - command reg		*/
+	unsigned int	argu;		/* 0x04 - argument reg		*/
+	unsigned int	rsp0;		/* 0x08 - response reg0		*/
+	unsigned int	rsp1;		/* 0x0c - response reg1		*/
+	unsigned int	rsp2;		/* 0x10 - response reg2		*/
+	unsigned int	rsp3;		/* 0x14 - response reg3		*/
+	unsigned int	rsp_cmd;	/* 0x18 - responded cmd reg	*/
+	unsigned int	dcr;		/* 0x1c - data control reg	*/
+	unsigned int	dtr;		/* 0x20 - data timer reg	*/
+	unsigned int	dlr;		/* 0x24 - data length reg	*/
+	unsigned int	status;		/* 0x28 - status reg		*/
+	unsigned int	clr;		/* 0x2c - clear reg		*/
+	unsigned int	int_mask;	/* 0x30 - intrrupt mask reg	*/
+	unsigned int	pcr;		/* 0x34 - power control reg	*/
+	unsigned int	ccr;		/* 0x38 - clock contorl reg	*/
+	unsigned int	bwr;		/* 0x3c - bus width reg		*/
+	unsigned int	dwr;		/* 0x40 - data window reg	*/
+#ifndef CONFIG_FTSDC010_SDIO
+	unsigned int	feature;	/* 0x44 - feature reg		*/
+	unsigned int	rev;		/* 0x48 - revision reg		*/
+#else
+	unsigned int	mmc_intr_time;	/* 0x44 - MMC int resp time reg	*/
+	unsigned int	gpo;		/* 0x48 - gerenal purpose output */
+	unsigned int	reserved[8];	/* 0x50 - 0x68 reserved		*/
+	unsigned int	sdio_ctrl1;	/* 0x6c - SDIO control reg 1	*/
+	unsigned int	sdio_ctrl2;	/* 0x70 - SDIO control reg 2	*/
+	unsigned int	sdio_status;	/* 0x74 - SDIO status regi	*/
+	unsigned int	reserved1[9];	/* 0x78 - 0x98	reserved	*/
+	unsigned int	feature;	/* 0x9c - feature reg		*/
+	unsigned int	rev;		/* 0xa0 - revision reg		*/
+#endif /* CONFIG_FTSDC010_SDIO */
+};
+
+struct mmc_host {
+	struct ftsdc010_mmc *reg;
+	unsigned int version;		/* SDHCI spec. version */
+	unsigned int clock;		/* Current clock (MHz) */
+	unsigned int fifo_len;		/* bytes */
+	unsigned int last_opcode;	/* Last OP Code */
+};
+
+/* functions */
+int ftsdc010_mmc_init(int dev_index);
+
+#endif	/* __ASSEMBLY__ */
+
+/* global defines */
+#define FTSDC010_CMD_RETRY			0x100000
+#define FTSDC010_PIO_RETRY			100	/* pio retry times */
+#define FTSDC010_DELAY_UNIT			100	/* 100 us */
+
+/* define from Linux kernel - include/linux/mmc/card.h */
+#define MMC_TYPE_SDIO				2	/* SDIO card */
+#define mmc_card_sdio(c)			((c)->type == MMC_TYPE_SDIO)
+
+/* define for mmc layer */
+#define MMC_DATA_BOTH_DIR			(MMC_DATA_WRITE | MMC_DATA_READ)
+
+/* this part is strange */
+#define FTSDC010_SDIO_CTRL1_REG			0x0000006C
+#define FTSDC010_SDIO_CTRL2_REG			0x0000006C
+#define FTSDC010_SDIO_STATUS_REG		0x00000070
+
+/* 0x00 - command register */
+#define FTSDC010_CMD_IDX(x)			(((x) & 0x3f) << 0)
+#define FTSDC010_CMD_NEED_RSP			(1 << 6)
+#define FTSDC010_CMD_LONG_RSP			(1 << 7)
+#define FTSDC010_CMD_APP_CMD			(1 << 8)
+#define FTSDC010_CMD_CMD_EN			(1 << 9)
+#define FTSDC010_CMD_SDC_RST			(1 << 10)
+#define FTSDC010_CMD_MMC_INT_STOP		(1 << 11)
+
+/* 0x18 - responded command register */
+#define FTSDC010_RSP_CMD_IDX(x)			(((x) >> 0) & 0x3f)
+#define FTSDC010_RSP_CMD_APP			(1 << 6)
+
+/* 0x1c - data control register */
+#define FTSDC010_DCR_BLK_SIZE(x)		(((x) & 0xf) << 0)
+#define FTSDC010_DCR_DATA_WRITE			(1 << 4)
+#define FTSDC010_DCR_DMA_EN			(1 << 5)
+#define FTSDC010_DCR_DATA_EN			(1 << 6)
+#ifdef CONFIG_FTSDC010_SDIO
+#define FTSDC010_DCR_FIFOTH			(1 << 7)
+#define FTSDC010_DCR_DMA_TYPE(x)		(((x) & 0x3) << 8)
+#define FTSDC010_DCR_FIFO_RST			(1 << 10)
+#endif /* CONFIG_FTSDC010_SDIO */
+
+#define FTSDC010_DCR_DMA_TYPE_1			0x0	/* Single r/w	*/
+#define FTSDC010_DCR_DMA_TYPE_4			0x1	/* Burst 4 r/w	*/
+#define FTSDC010_DCR_DMA_TYPE_8			0x2	/* Burst 8 r/w	*/
+
+#define FTSDC010_DCR_BLK_SIZE(x)		(ffs(x) - 1)	/* 1B - 2048B */
+
+/* CPRM related define */
+#define FTSDC010_CPRM_DATA_CHANGE_ENDIAN_EN	0x000008
+#define FTSDC010_CPRM_DATA_SWAP_HL_EN		0x000010
+
+/* 0x28 - status register */
+#define FTSDC010_STATUS_RSP_CRC_FAIL		(1 << 0)
+#define FTSDC010_STATUS_DATA_CRC_FAIL		(1 << 1)
+#define FTSDC010_STATUS_RSP_TIMEOUT		(1 << 2)
+#define FTSDC010_STATUS_DATA_TIMEOUT		(1 << 3)
+#define FTSDC010_STATUS_RSP_CRC_OK		(1 << 4)
+#define FTSDC010_STATUS_DATA_CRC_OK		(1 << 5)
+#define FTSDC010_STATUS_CMD_SEND		(1 << 6)
+#define FTSDC010_STATUS_DATA_END		(1 << 7)
+#define FTSDC010_STATUS_FIFO_URUN		(1 << 8)
+#define FTSDC010_STATUS_FIFO_ORUN		(1 << 9)
+#define FTSDC010_STATUS_CARD_CHANGE		(1 << 10)
+#define FTSDC010_STATUS_CARD_DETECT		(1 << 11)
+#define FTSDC010_STATUS_WRITE_PROT		(1 << 12)
+#ifdef CONFIG_FTSDC010_SDIO
+#define FTSDC010_STATUS_CP_READY		(1 << 13) /* reserved ? */
+#define FTSDC010_STATUS_CP_BUF_READY		(1 << 14) /* reserved ? */
+#define FTSDC010_STATUS_PLAIN_TEXT_READY	(1 << 15) /* reserved ? */
+#define FTSDC010_STATUS_SDIO_IRPT		(1 << 16) /* SDIO card intr */
+#define FTSDC010_STATUS_DATA0_STATUS		(1 << 17)
+#endif /* CONFIG_FTSDC010_SDIO */
+
+/* 0x2c - clear register */
+#define FTSDC010_CLR_RSP_CRC_FAIL		(1 << 0)
+#define FTSDC010_CLR_DATA_CRC_FAIL		(1 << 1)
+#define FTSDC010_CLR_RSP_TIMEOUT		(1 << 2)
+#define FTSDC010_CLR_DATA_TIMEOUT		(1 << 3)
+#define FTSDC010_CLR_RSP_CRC_OK			(1 << 4)
+#define FTSDC010_CLR_DATA_CRC_OK		(1 << 5)
+#define FTSDC010_CLR_CMD_SEND			(1 << 6)
+#define FTSDC010_CLR_DATA_END			(1 << 7)
+#define FTSDC010_STATUS_FIFO_URUN		(1 << 8) /* reserved ? */
+#define FTSDC010_STATUS_FIFO_ORUN		(1 << 9) /* reserved ? */
+#define FTSDC010_CLR_CARD_CHANGE		(1 << 10)
+#ifdef CONFIG_FTSDC010_SDIO
+#define FTSDC010_CLR_SDIO_IRPT			(1 << 16)
+#endif /* CONFIG_FTSDC010_SDIO */
+
+/* 0x30 - interrupt mask register */
+#define FTSDC010_INT_MASK_RSP_CRC_FAIL		(1 << 0)
+#define FTSDC010_INT_MASK_DATA_CRC_FAIL		(1 << 1)
+#define FTSDC010_INT_MASK_RSP_TIMEOUT		(1 << 2)
+#define FTSDC010_INT_MASK_DATA_TIMEOUT		(1 << 3)
+#define FTSDC010_INT_MASK_RSP_CRC_OK		(1 << 4)
+#define FTSDC010_INT_MASK_DATA_CRC_OK		(1 << 5)
+#define FTSDC010_INT_MASK_CMD_SEND		(1 << 6)
+#define FTSDC010_INT_MASK_DATA_END		(1 << 7)
+#define FTSDC010_INT_MASK_FIFO_URUN		(1 << 8)
+#define FTSDC010_INT_MASK_FIFO_ORUN		(1 << 9)
+#define FTSDC010_INT_MASK_CARD_CHANGE		(1 << 10)
+#ifdef CONFIG_FTSDC010_SDIO
+#define FTSDC010_INT_MASK_CP_READY		(1 << 13)
+#define FTSDC010_INT_MASK_CP_BUF_READY		(1 << 14)
+#define FTSDC010_INT_MASK_PLAIN_TEXT_READY	(1 << 15)
+#define FTSDC010_INT_MASK_SDIO_IRPT		(1 << 16)
+#define FTSDC010_STATUS_DATA0_STATUS		(1 << 17)
+#endif /* CONFIG_FTSDC010_SDIO */
+
+/* ? */
+#define FTSDC010_CARD_INSERT			0x0
+#define FTSDC010_CARD_REMOVE			FTSDC010_STATUS_REG_CARD_DETECT
+
+/* 0x34 - power control register */
+#define FTSDC010_PCR_POWER(x)			(((x) & 0xf) << 0)
+#define FTSDC010_PCR_POWER_ON			(1 << 4)
+
+/* 0x38 - clock control register */
+#define FTSDC010_CCR_CLK_DIV(x)			(((x) & 0x7f) << 0)
+#define FTSDC010_CCR_CLK_SD			(1 << 7) /* 0: MMC, 1: SD */
+#define FTSDC010_CCR_CLK_DIS			(1 << 8)
+
+/* card type */
+#define FTSDC010_CARD_TYPE_SD			FTSDC010_CLOCK_REG_CARD_TYPE
+#define FTSDC010_CARD_TYPE_MMC			0x0
+
+/* 0x3c - bus width register */
+#define FTSDC010_BWR_SINGLE_BUS			(1 << 0)
+#define FTSDC010_BWR_WIDE_8_BUS			(1 << 1)
+#define FTSDC010_BWR_WIDE_4_BUS			(1 << 2)
+#define FTSDC010_BWR_WIDE_BUS_SUPPORT(x)	(((x) >> 3) & 0x3)
+#define FTSDC010_BWR_CARD_DETECT		(1 << 5)
+
+#define FTSDC010_BWR_1_BUS_SUPPORT		0x0
+#define FTSDC010_BWR_4_BUS_SUPPORT		0x1
+#define FTSDC010_BWR_8_BUS_SUPPORT		0x2
+
+/* 0x44 or 0x9c - feature register */
+#define FTSDC010_FEATURE_FIFO_DEPTH(x)		(((x) >> 0) & 0xff)
+#define FTSDC010_FEATURE_CPRM_FUNCTION		(1 << 8)
+
+#define FTSDC010_FIFO_DEPTH_4			0x04
+#define FTSDC010_FIFO_DEPTH_8			0x08
+#define FTSDC010_FIFO_DEPTH_16			0x10
+
+/* 0x48 or 0xa0 - revision register */
+#define FTSDC010_REV_REVISION(x)		(((x) & 0xff) >> 0)
+#define FTSDC010_REV_MINOR(x)			(((x) & 0xff00) >> 8)
+#define FTSDC010_REV_MAJOR(x)			(((x) & 0xffff0000) >> 16)
+
+#ifdef CONFIG_FTSDC010_SDIO
+/* 0x44 - general purpose output */
+#define FTSDC010_GPO_PORT(x)			(((x) & 0xf) << 0)
+
+/* 0x6c - sdio control register 1 */
+#define FTSDC010_SDIO_CTRL1_SDIO_BLK_SIZE(x)	(((x) & 0xfff) << 0)
+#define FTSDC010_SDIO_CTRL1_SDIO_BLK_MODE	(1 << 12)
+#define FTSDC010_SDIO_CTRL1_READ_WAIT_EN	(1 << 13)
+#define FTSDC010_SDIO_CTRL1_SDIO_ENABLE		(1 << 14)
+#define FTSDC010_SDIO_CTRL1_SDIO_BLK_NO(x)	(((x) & 0x1ff) << 15)
+
+/* 0x70 - sdio control register 2 */
+#define FTSDC010_SDIO_CTRL2_SUSP_READ_WAIT	(1 << 0)
+#define FTSDC010_SDIO_CTRL2_SUSP_CMD_ABORT	(1 << 1)
+
+/* 0x74 - sdio status register */
+#define FTSDC010_SDIO_STATUS_SDIO_BLK_CNT(x)	(((x) >> 0) & 0x1ffff)
+#define FTSDC010_SDIO_STATUS_FIFO_REMAIN_NO(x)	(((x) >> 17) & 0xef)
+
+#endif /* CONFIG_FTSDC010_SDIO */
+
+#endif /* __FTSDC010_H */