[U-Boot] [PATCH v3 2/3] mmc : Add SDIO driver for Marvell SoCs (Kirkwood)

["Gérald Kerma" <geraker@gmail.com>]

    Add SDIO legacy driver for Marvell SoCs (Kirkwood)

Signed-off-by: G?rald Kerma <geraker@gmail.com>
---
v3:
 * GNU Software License compliance
 * Patch more readable

v2:
 * Code cleaning

v1:
 * Fix errors from SD/SDHC detect

---
 drivers/mmc/Makefile  |    1 +
 drivers/mmc/mv_sdio.c |  675
+++++++++++++++++++++++++++++++++++++++++++++++++
 drivers/mmc/mv_sdio.h |  313 +++++++++++++++++++++++
 3 files changed, 989 insertions(+), 0 deletions(-)

diff --git a/drivers/mmc/Makefile b/drivers/mmc/Makefile
index 68afd30..2a4e1d4 100644
--- a/drivers/mmc/Makefile
+++ b/drivers/mmc/Makefile
@@ -30,6 +30,7 @@ COBJS-$(CONFIG_BFIN_SDH) += bfin_sdh.o
 COBJS-$(CONFIG_FSL_ESDHC) += fsl_esdhc.o
 COBJS-$(CONFIG_GENERIC_MMC) += mmc.o
 COBJS-$(CONFIG_GENERIC_ATMEL_MCI) += gen_atmel_mci.o
+COBJS-$(CONFIG_MV_SDIO) += mv_sdio.o
 COBJS-$(CONFIG_MXC_MMC) += mxcmmc.o
 COBJS-$(CONFIG_OMAP3_MMC) += omap3_mmc.o
 COBJS-$(CONFIG_OMAP_HSMMC) += omap_hsmmc.o
diff --git a/drivers/mmc/mv_sdio.c b/drivers/mmc/mv_sdio.c
new file mode 100644
index 0000000..35969d3
--- /dev/null
+++ b/drivers/mmc/mv_sdio.c
@@ -0,0 +1,675 @@
+/*
+ * (C) Copyright 2009
+ * Marvell Semiconductor <www.marvell.com>
+ * Written-by: G?rald Kerma <geraker@gmail.com>
+ *
+ * (C) Copyright 2003
+ * Kyle Harris, Nexus Technologies, Inc. kharris at nexus-tech.net
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ */
+
+#include <config.h>
+#include <common.h>
+#include <malloc.h>
+#include <mmc.h>
+#include <asm/errno.h>
+#include <part.h>
+#include <asm/io.h>
+#ifdef CONFIG_KIRKWOOD
+#include <asm/arch/kirkwood.h>
+#endif
+#include "mv_sdio.h"
+
+#ifdef CONFIG_MMC
+
+#define DRIVER_NAME "mv-sdio"
+
+#ifdef DEBUG
+#define pr_debug(fmt, args...) printf(fmt, ##args)
+#else
+#define pr_debug(...) do { } while(0)
+#endif
+
+//static mv_sdio_t *mvsd = (mv_sdio_t *)mmc->priv;
+static mv_sdio_t *mvsd = (mv_sdio_t *)MV_SDIO_BASE;
+	
+static int is_sdhc;
+extern int fat_register_device(block_dev_desc_t *dev_desc, int part_no);
+static block_dev_desc_t mmc_dev;
+block_dev_desc_t * mmc_get_dev(int dev)
+{
+	return ((block_dev_desc_t *)&mmc_dev);
+}
+
+/*
+ * FIXME needs to read cid and csd info to determine block size
+ * and other parameters
+ */
+static uchar mmc_buf[MMC_BLOCK_SIZE];
+static mv_mmc_csd_t mv_mmc_csd;
+static int mmc_ready = 0;
+
+/* MMC_DEFAULT_RCA should probably be just 1, but this may break other code
+   that expects it to be shifted. */
+static u_int16_t rca = 0;
+
+/* used for debug */
+static u_int32_t mv_mmc_size(const struct mv_mmc_csd *csd)
+{
+	u_int32_t block_len, mult, blocknr;
+
+	block_len = csd->read_bl_len << 12;
+	mult = csd->c_size_mult1 << 8;
+	blocknr = (csd->c_size+1) * mult;
+
+	return blocknr * block_len;
+}
+
+static int isprint (unsigned char ch)
+{
+	if (ch >= 32 && ch < 127)
+		return (1);
+
+	return (0);
+}
+
+static int toprint(char *dst, char c)
+{
+	if (isprint(c)) {
+		*dst = c;
+		return 1;
+	}
+
+	return sprintf(dst,"\\x%02x", c);
+
+}
+
+static void print_mmc_cid(mv_mmc_cid_t *cid)
+{
+	printf("MMC found. Card desciption is:\n");
+	printf("Manufacturer ID = %02x%02x%02x\n",
+		cid->id[0], cid->id[1], cid->id[2]);
+	printf("HW/FW Revision = %x %x\n",cid->hwrev, cid->fwrev);
+	cid->hwrev = cid->fwrev = 0;	/* null terminate string */
+	printf("Product Name = %s\n",cid->name);
+	printf("Serial Number = %02x%02x%02x\n",
+		cid->sn[0], cid->sn[1], cid->sn[2]);
+	printf("Month = %d\n",cid->month);
+	printf("Year = %d\n",1997 + cid->year);
+}
+
+static void print_sd_cid(mv_sd_cid_t *cid)
+{
+	int len;
+	char tbuf[64];
+
+	printf("SD%s found. Card desciption is:\n", is_sdhc?"HC":"");
+
+	len = 0;
+	len += toprint(&tbuf[len], cid->oid_0);
+	len += toprint(&tbuf[len], cid->oid_1);
+	tbuf[len] = 0;
+
+	printf("Manufacturer:       0x%02x, OEM \"%s\"\n",
+	    cid->mid, tbuf);
+
+	len = 0;
+	len += toprint(&tbuf[len], cid->pnm_0);
+	len += toprint(&tbuf[len], cid->pnm_1);
+	len += toprint(&tbuf[len], cid->pnm_2);
+	len += toprint(&tbuf[len], cid->pnm_3);
+	len += toprint(&tbuf[len], cid->pnm_4);
+	tbuf[len] = 0;
+
+	printf("Product name:       \"%s\", revision %d.%d\n",
+		tbuf,
+	    cid->prv >> 4, cid->prv & 15);
+
+	printf("Serial number:      %u\n",
+	    cid->psn_0 << 24 | cid->psn_1 << 16 | cid->psn_2 << 8 |
+	    cid->psn_3);
+	printf("Manufacturing date: %d/%d\n",
+	    cid->mdt_1 & 15,
+	    2000+((cid->mdt_0 & 15) << 4)+((cid->mdt_1 & 0xf0) >> 4));
+
+	printf("CRC:                0x%02x, b0 = %d\n",
+	    cid->crc >> 1, cid->crc & 1);
+}
+
+static void mvsdio_set_clock(unsigned int clock)
+{
+	unsigned int m;
+
+	m = MVSDMMC_BASE_FAST_CLOCK/(2*clock) - 1;
+
+	pr_debug("mvsdio_set_clock: dividor = 0x%x clock=%d\n",
+		      m, clock);
+
+
+	writew(m & 0x7ff, &mvsd->CLK_DIV);
+
+	if (isprint(1))
+	udelay(10*1000);
+}
+
+/****************************************************/
+static ulong * mv_mmc_cmd(ulong cmd, ulong arg, ushort xfermode, ushort
resptype, ushort waittype)
+/****************************************************/
+{
+	static ulong resp[4];
+	ushort done ;
+	int err = 0 ;
+	ulong curr, start, diff, hz;
+	ushort response[8];
+
+	pr_debug("mv_mmc_cmd %x, arg: %x,xfer: %x,resp: %x, wait : %x\n"
+	, (unsigned int)cmd, (unsigned int)arg, xfermode, resptype, waittype);
+
+
+	/* clear status */
+	writew(0xffff, &mvsd->NOR_INTR_STATUS);
+	writew(0xffff, &mvsd->ERR_INTR_STATUS);
+
+	start = get_timer(0);
+	hz = CONFIG_SYS_HZ;
+
+	while((readw(&mvsd->PRESENT_STATE0) & CARD_BUSY)) {
+		curr = get_timer(0);
+		diff = (long) curr - (long) start;
+		if (diff > (3*hz))
+		{
+			/* 3 seconds timeout, card busy, can't sent cmd */
+			printf("card too busy \n");
+			return 0;
+		}
+	}
+
+	writew((ushort)(arg&0xffff), &mvsd->ARG_LOW);
+	writew((ushort)(arg>>16), &mvsd->ARG_HI);
+	writew(xfermode, &mvsd->XFER_MODE);
+	if( (cmd == MMC_CMD_READ_BLOCK) || (cmd == 25) )
+	{
+		writew(((cmd << 8) | resptype | 0x3c ) , &mvsd->CMD);
+	pr_debug("cmd reg : %x\n", readw(&mvsd->CMD)) ;
+
+	}
+	else
+	{
+		writew(((cmd << 8) | resptype ), &mvsd->CMD);
+	}
+
+	done = readw(&mvsd->NOR_INTR_STATUS) & waittype;
+	start = get_timer(0);
+
+	while( done!=waittype)
+	{
+		done = readw(&mvsd->NOR_INTR_STATUS) & waittype;
+
+		if( readw(&mvsd->NOR_INTR_STATUS) & 0x8000 )
+		{		
+			pr_debug("Error! cmd : %d, err : %04x\n", (unsigned int)cmd,
readw(&mvsd->ERR_INTR_STATUS)) ;
+
+			return 0 ;	/* error happen */
+		}
+
+		curr = get_timer(0);
+		diff = (long) curr - (long) start;
+		if (diff > (3*hz))
+		{
+			pr_debug("cmd timeout, status : %04x\n", readw(&mvsd->NOR_INTR_STATUS));
+			pr_debug("xfer mode : %04x\n", readw(&mvsd->XFER_MODE));
+
+			err = 1 ;
+			break;
+		}
+	}
+
+	response[0] = readw(&mvsd->RSP0);
+	response[1] = readw(&mvsd->RSP1);
+	response[2] = readw(&mvsd->RSP2);
+	response[3] = readw(&mvsd->RSP3);
+	response[4] = readw(&mvsd->RSP4);
+	response[5] = readw(&mvsd->RSP5);
+	response[6] = readw(&mvsd->RSP6);
+	response[7] = readw(&mvsd->RSP7);
+
+	memset(resp, 0, sizeof(resp));
+
+	switch (resptype & 0x3) {
+		case SDIO_CMD_RSP_48:
+		case SDIO_CMD_RSP_48BUSY:
+			resp[0] = ((response[2] & 0x3f) << (8 - 8)) |
+				((response[1] & 0xffff) << (14 - 8)) |
+				((response[0] & 0x3ff) << (30 - 8));
+			resp[1] = ((response[0] & 0xfc00) >> 10);
+			break;
+
+		case SDIO_CMD_RSP_136:
+			resp[3] = ((response[7] & 0x3fff) << 8)	|
+				((response[6] & 0x3ff) << 22);
+			resp[2] = ((response[6] & 0xfc00) >> 10)	|
+				((response[5] & 0xffff) << 6)	|
+				((response[4] & 0x3ff) << 22);
+			resp[1] = ((response[4] & 0xfc00) >> 10)	|
+				((response[3] & 0xffff) << 6)	|
+				((response[2] & 0x3ff) << 22);
+			resp[0] = ((response[2] & 0xfc00) >> 10)	|
+				((response[1] & 0xffff) << 6)	|
+				((response[0] & 0x3ff) << 22);
+			break;
+		default:
+			return 0;
+	}
+	int i;
+	pr_debug("MMC resp :");
+	for (i=0; i<4; ++i ) {
+		pr_debug(" %08x", (unsigned int)resp[i]);
+	}
+	pr_debug("\n");
+	if( err )
+		return NULL ;
+	else
+		return resp;
+}
+
+/****************************************************/
+static int mv_mmc_block_read(uchar *dst, ulong src, ulong len)
+/****************************************************/
+{
+	ulong *resp;
+
+	if (len == 0) {
+		return 0;
+	}
+
+	if (is_sdhc) {
+		/* SDHC: use block address */
+		src >>= 9;
+	}
+
+	pr_debug("mmc_block_rd dst %lx src %lx len %d\n", (ulong)dst, src,
(int)len);
+
+	/* prepare for dma transfer */
+	writew(((ulong)(dst))&0xffff,&mvsd->SYS_ADDR_LOW);
+	writew(((ulong)(dst)>>16)&0xffff,&mvsd->SYS_ADDR_HI);
+	writew(len,&mvsd->BLK_SIZE);
+	writew(1,&mvsd->BLK_COUNT);
+	
+	/* send read command */
+	resp = mv_mmc_cmd(MMC_CMD_READ_BLOCK, src, 0x10 ,
+			SDIO_CMD_RSP_48, SDIO_NOR_XFER_DONE);
+	if (!resp) {
+		pr_debug("mv_mmc_block_read: mmc read block cmd fails\n");
+		return -EIO;
+	}
+
+	return 0;
+}
+
+/****************************************************/
+int mv_mmc_read(ulong src, uchar *dst, int size)
+/****************************************************/
+{
+	ulong end, part_start, part_end, part_len, aligned_start, aligned_end;
+	ulong mmc_block_size, mmc_block_address;
+
+	if (size == 0) {
+		return 0;
+	}
+
+	if (!mmc_ready) {
+		printf("Please initial the MMC first\n");
+		return -1;
+	}
+
+	mmc_block_size = MMC_BLOCK_SIZE;
+	mmc_block_address = ~(mmc_block_size - 1);
+
+	end = src + size;
+	part_start = ~mmc_block_address & src;
+	part_end = ~mmc_block_address & end;
+	aligned_start = mmc_block_address & src;
+	aligned_end = mmc_block_address & end;
+
+	/* all block aligned accesses */
+	pr_debug("src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend
%lx\n",
+	(long unsigned int)src,(ulong)dst, end, part_start, part_end,
aligned_start, aligned_end);
+
+	if (part_start) {
+		part_len = mmc_block_size - part_start;
+		pr_debug("ps src %lx dst %lx end %lx pstart %lx pend %lx astart %lx
aend %lx\n",
+		(long unsigned int)src,(ulong)dst, end, part_start, part_end,
aligned_start, aligned_end);
+
+		if ((mv_mmc_block_read(mmc_buf, aligned_start, mmc_block_size)) < 0) {
+			return -1;
+		}
+		memcpy(dst, mmc_buf+part_start, part_len);
+		dst += part_len;
+		src += part_len;
+	}
+	pr_debug("src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend
%lx\n",
+	(long unsigned int)src,(ulong)dst, end, part_start, part_end,
aligned_start, aligned_end);
+
+	for (; src < aligned_end; aligned_start +=mmc_block_size, src +=
mmc_block_size, dst += mmc_block_size) {
+		pr_debug("al src %lx dst %lx end %lx pstart %lx pend %lx astart %lx
aend %lx\n",
+		(long unsigned int)src,(ulong)dst, end, part_start, part_end,
aligned_start, aligned_end);
+
+		if ((mv_mmc_block_read(mmc_buf, aligned_start, mmc_block_size)) < 0) {
+		 	printf("mmc block read error\n");
+			return -1;
+		}
+		memcpy(dst, mmc_buf, mmc_block_size);
+	}
+	pr_debug("src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend
%lx\n",
+	(long unsigned int)src,(ulong)dst, end, part_start, part_end,
aligned_start, aligned_end);
+
+	if (part_end && src < end) {
+		pr_debug("pe src %lx dst %lx end %lx pstart %lx pend %lx astart %lx
aend %lx\n",
+		(long unsigned int)src,(ulong)dst, end, part_start, part_end,
aligned_start, aligned_end);
+
+		if ((mv_mmc_block_read(mmc_buf, aligned_end, mmc_block_size)) < 0) {
+			return -1;
+		}
+		memcpy(dst, mmc_buf, part_end);
+	}
+	return 0;
+}
+
+/****************************************************/
+static ulong mv_mmc_bread(int dev_num, ulong blknr, ulong blkcnt, ulong
*dst)
+/****************************************************/
+{
+	int mmc_block_size = MMC_BLOCK_SIZE;
+	ulong src = blknr * mmc_block_size;
+
+	mv_mmc_read(src, (uchar *)dst, blkcnt*mmc_block_size);
+	return blkcnt;
+}
+
+/****************************************************/
+int mmc_legacy_init(int verbose)
+/****************************************************/
+{
+	int retries, rc = -ENODEV;
+	ulong *resp;
+	int sd_ver20;
+	int is_sd;
+	ushort reg;
+	uchar cidbuf[64];
+
+	sd_ver20 = 0;
+	is_sdhc = 0;
+	is_sd = 0;
+
+	/* Initial Host Ctrl : Timeout : max , Normal Speed mode, 4-bit data
mode */
+	/* Big Endian, SD memory Card, Push_pull CMD Line */
+	writew( SDIO_HOST_CTRL_TMOUT(0xf) |
+		SDIO_HOST_CTRL_DATA_WIDTH_4_BITS |
+		SDIO_HOST_CTRL_BIG_ENDIAN |
+		SDIO_HOST_CTRL_PUSH_PULL_EN |
+		SDIO_HOST_CTRL_CARD_TYPE_MEM_ONLY ,
+		&mvsd->HOST_CTRL);
+
+	writew( 0, &mvsd->CLK_CTRL);
+
+	/* enable status */
+	writew( 0xffff, &mvsd->NOR_STATUS_EN);
+	writew( 0xffff, &mvsd->ERR_STATUS_EN);
+
+	/* disable interrupts */
+	writew( 0, &mvsd->NOR_INTR_EN);
+	writew( 0, &mvsd->ERR_INTR_EN);
+
+	writew( 0x100, &mvsd->SW_RESET);
+	udelay(10000);
+
+	mv_mmc_csd.c_size = 0;
+
+	/* reset */
+	retries = 10;
+	resp = mv_mmc_cmd(0, 0, 0, SDIO_CMD_RSP_NONE, SDIO_NOR_CMD_DONE );
+	pr_debug("cmd 0 resp : %08x %08x %08x %08x\n",
+	(unsigned int)resp[0], (unsigned int)resp[1], (unsigned int)resp[2],
(unsigned int)resp[3] );
+
+
+	pr_debug ("trying to detect SD card version\n");
+
+	resp = mv_mmc_cmd(8, 0x000001aa, 0,  SDIO_CMD_RSP_48, SDIO_NOR_CMD_DONE );
+	pr_debug("cmd 8 resp : %08x %08x %08x %08x\n",
+	(unsigned int)resp[0], (unsigned int)resp[1], (unsigned int)resp[2],
(unsigned int)resp[3] );
+
+	if (resp && (resp[0] & 0x1ff)==0x1aa) {
+		pr_debug ("SD version 2.0 card detected\n");
+
+		sd_ver20 = 1;
+	}
+
+	if (sd_ver20)
+		retries = 50;
+	else
+		retries = 10;
+
+	while (retries--) {
+		resp = mv_mmc_cmd(55, 0, 0,  SDIO_CMD_RSP_48, SDIO_NOR_CMD_DONE );
+		pr_debug("cmd 55 resp : %08x %08x %08x %08x\n",
+		(unsigned int)resp[0], (unsigned int)resp[1], (unsigned int)resp[2],
(unsigned int)resp[3] );
+
+
+		if (sd_ver20)
+			resp = mv_mmc_cmd(41, 0x40300000, 0,  SDIO_CMD_RSP_48,
SDIO_NOR_CMD_DONE );
+		else
+			resp = mv_mmc_cmd(41, 0x00300000, 0,  SDIO_CMD_RSP_48,
SDIO_NOR_CMD_DONE );
+
+		pr_debug("cmd 41 resp : %08x %08x %08x %08x\n",
+		(unsigned int)resp[0], (unsigned int)resp[1], (unsigned int)resp[2],
(unsigned int)resp[3] );
+
+
+		if (resp && (resp[0] & 0x80000000)) {
+			pr_debug ("detected SD card\n");
+
+			is_sd = 1;
+			break;
+		}
+
+		udelay(100*1000);
+	}
+
+	if (retries <= 0 && !is_sd) {
+		pr_debug ("failed to detect SD card, trying MMC\n");
+
+		retries = 10;
+		while (retries--) {
+			resp = mv_mmc_cmd(1, 0, 0,  SDIO_CMD_RSP_48, SDIO_NOR_CMD_DONE );
+			pr_debug("cmd 01 resp : %08x %08x %08x %08x\n",
+			(unsigned int)resp[0], (unsigned int)resp[1], (unsigned int)resp[2],
(unsigned int)resp[3] );
+
+
+			if (resp && (resp[0] & 0x80000000)) {
+				printf ("detected MMC card\n");
+				reg = readw(&mvsd->HOST_CTRL);
+				reg &= ~(0x3<<1);
+				reg |= SDIO_HOST_CTRL_CARD_TYPE_IO_MMC;
+				writew( reg, &mvsd->HOST_CTRL);
+				break;
+			}
+
+			udelay(100*1000);
+		}
+	}
+		
+	if (retries <= 0) {
+		pr_debug ("detect fails\n");
+
+		return -ENODEV;
+	}
+
+	/* try to get card id */
+	resp = mv_mmc_cmd(2, 0, 0, SDIO_CMD_RSP_136, SDIO_NOR_CMD_DONE );
+	pr_debug("cmd 2 resp : %08x %08x %08x %08x\n",
+	(unsigned int)resp[0], (unsigned int)resp[1], (unsigned int)resp[2],
(unsigned int)resp[3] );
+
+
+	if (resp == NULL) {
+		pr_debug ("read cid fails\n");
+
+		return -ENODEV;
+	}
+
+	if (is_sd) {
+		mv_sd_cid_t *cid = (mv_sd_cid_t *) resp;
+
+		memcpy(cidbuf, resp, sizeof(mv_sd_cid_t));
+
+		sprintf((char *) mmc_dev.vendor,
+			"Man %02x OEM %c%c \"%c%c%c%c%c\"",
+			cid->mid, cid->oid_0, cid->oid_1,
+			cid->pnm_0, cid->pnm_1, cid->pnm_2, cid->pnm_3, cid->pnm_4);
+
+		sprintf((char *) mmc_dev.product, "%d",
+			(cid->psn_0 << 24) | (cid->psn_1 <<16) | (cid->psn_2 << 8) |
(cid->psn_3 << 8));
+		
+		sprintf((char *) mmc_dev.revision, "%d.%d", cid->prv>>4, cid->prv &
0xff);
+		
+	} else {
+		/* TODO configure mmc driver depending on card attributes */
+		mv_mmc_cid_t *cid = (mv_mmc_cid_t *) resp;
+
+		memcpy(cidbuf, resp, sizeof(mv_sd_cid_t));
+
+
+		sprintf((char *) mmc_dev.vendor,
+			"Man %02x%02x%02x Snr %02x%02x%02x",
+			cid->id[0], cid->id[1], cid->id[2],
+			cid->sn[0], cid->sn[1], cid->sn[2]);
+		sprintf((char *) mmc_dev.product, "%s", cid->name);
+		sprintf((char *) mmc_dev.revision, "%x %x", cid->hwrev, cid->fwrev);
+	}
+	
+	/* fill in device description */
+	mmc_dev.if_type = IF_TYPE_MMC;
+	mmc_dev.part_type = PART_TYPE_DOS;
+	mmc_dev.dev = 0;
+	mmc_dev.lun = 0;
+	mmc_dev.type = 0;
+
+	/* FIXME fill in the correct size (is set to 128MByte) */
+	mmc_dev.blksz = MMC_BLOCK_SIZE;
+	mmc_dev.lba = 0x10000;
+
+	mmc_dev.removable = 0;
+	mmc_dev.block_read = (unsigned long) mv_mmc_bread;
+
+	/* MMC exists, get CSD too */
+	resp = mv_mmc_cmd(MMC_CMD_SET_RCA, 0, 0, SDIO_CMD_RSP_48,
SDIO_NOR_CMD_DONE );
+	if (resp == NULL) {
+		pr_debug ("set rca fails\n");
+
+		return -ENODEV;
+	}
+	pr_debug("cmd3 resp : 0x%08x 0x%08x 0x%08x 0x%08x\n",
+	(unsigned int)resp[0], (unsigned int)resp[1], (unsigned int)resp[2],
(unsigned int)resp[3]);
+
+
+	if (is_sd)
+		rca = resp[0] >> 16;
+	else
+		rca = 0;
+
+	resp = mv_mmc_cmd(MMC_CMD_SEND_CSD, rca<<16, 0,
SDIO_CMD_RSP_136,SDIO_NOR_CMD_DONE );
+	pr_debug("cmd 9 resp : %08x %08x %08x %08x\n",
+	(unsigned int)resp[0], (unsigned int)resp[1], (unsigned int)resp[2],
(unsigned int)resp[3] );
+
+	if (resp == NULL) {
+		pr_debug ("read csd fails\n");
+
+		return -ENODEV;
+	}
+
+	memcpy(&mv_mmc_csd, (mv_mmc_csd_t *) resp, sizeof(mv_mmc_csd_t));
+	rc = 0;
+	mmc_ready = 1;
+
+	/* FIXME add verbose printout for csd */
+	pr_debug ("size = %u\n", mv_mmc_size(&mv_mmc_csd));
+
+
+	resp = mv_mmc_cmd(7, rca<<16, 0, SDIO_CMD_RSP_48BUSY, SDIO_NOR_CMD_DONE);
+	if (resp == NULL) {
+		pr_debug ("select card fails\n");
+
+		return -ENODEV;
+	}
+	pr_debug("cmd 7 resp : %08x %08x %08x %08x\n",
+	(unsigned int)resp[0], (unsigned int)resp[1], (unsigned int)resp[2],
(unsigned int)resp[3] );
+
+
+	if (is_sd) {
+		resp = mv_mmc_cmd(55, rca<<16, 0,  SDIO_CMD_RSP_48, SDIO_NOR_CMD_DONE );
+		if (resp == NULL) {
+			pr_debug ("cmd55 fails\n");
+
+			return -ENODEV;
+		}
+		pr_debug("cmd55 resp : 0x%08x 0x%08x 0x%08x 0x%08x\n",
+		(unsigned int)resp[0], (unsigned int)resp[1], (unsigned int)resp[2],
(unsigned int)resp[3]);
+
+
+		resp = mv_mmc_cmd(6, (rca<<16) | 0x2 , 0, SDIO_CMD_RSP_48,
SDIO_NOR_CMD_DONE );
+		if (resp == NULL) {
+			pr_debug ("cmd55 fails\n");
+
+			return -ENODEV;
+		}
+	pr_debug("cmd6 resp : 0x%08x 0x%08x 0x%08x 0x%08x\n",
+	(unsigned int)resp[0], (unsigned int)resp[1], (unsigned int)resp[2],
(unsigned int)resp[3]);
+
+	}
+
+	resp = (ulong *) &mv_mmc_csd;
+	pr_debug("csd: 0x%08x 0x%08x 0x%08x 0x%08x\n",
+	(unsigned int)resp[0], (unsigned int)resp[1], (unsigned int)resp[2],
(unsigned int)resp[3]);
+
+
+	/* check SDHC */
+	if ((resp[0]&0xf0000000)==0x40000000)
+		is_sdhc = 1;
+
+	/* set block len */
+	resp = mv_mmc_cmd(MMC_CMD_SET_BLOCKLEN, MMC_BLOCK_SIZE, 0,
SDIO_CMD_RSP_48, SDIO_NOR_CMD_DONE );
+	if (!resp) {
+		pr_debug("mv_mmc_block_read: set blk len fails\n");
+	 	return -ENODEV;
+	}
+
+	if (verbose) {
+		if (is_sd)
+			print_sd_cid((mv_sd_cid_t *) cidbuf);
+		else
+			print_mmc_cid((mv_mmc_cid_t *) cidbuf);
+	}
+
+	mvsdio_set_clock(CONFIG_SYS_MMC_CLK_PP);
+
+	fat_register_device(&mmc_dev,1); /* partitions start counting with 1 */
+
+	return 0;
+}
+
+#endif	/* CONFIG_MMC */
diff --git a/drivers/mmc/mv_sdio.h b/drivers/mmc/mv_sdio.h
new file mode 100644
index 0000000..3383c3d
--- /dev/null
+++ b/drivers/mmc/mv_sdio.h
@@ -0,0 +1,313 @@
+/*
+ * (C) Copyright 2009
+ * Marvell Semiconductor <www.marvell.com>
+ * Written-by: G?rald Kerma <geraker@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., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ */
+
+#ifndef _MVSDIO_INCLUDE
+#define _MVSDIO_INCLUDE
+
+//#define SDIO_REG(x) (MV_SDIO_BASE + (x))
+
+#define MVSDMMC_DMA_SIZE			65536
+#define MVSDMMC_CMD_TIMEOUT			2 /* 100 usec*/
+
+/*
+ * Clock rates
+ */
+
+#define MVSD_CLOCKRATE_MAX			50000000
+#define MVSD_BASE_DIV_MAX			0x7ff
+
+#define CONFIG_SYS_MMC_CLK_PP			25000000
+
+/*
+ * The base MMC clock rate
+ */
+
+#define MVSDMMC_CLOCKRATE_MIN			100000
+#define MVSDMMC_CLOCKRATE_MAX			MVSD_CLOCKRATE_MAX
+#define MVSDMMC_BASE_FAST_CLOCK			CONFIG_SYS_TCLK
+
+
+/*
+ * SDIO register
+ */
+#ifndef __ASSEMBLY__
+
+/*
+ * Structure for struct SoC access.
+ * Names starting with '_' are fillers.
+ */
+typedef struct mv_sdio {
+	/*	reg			Offset */
+	u32	SYS_ADDR_LOW;		/* 0x00 */
+	u32	SYS_ADDR_HI;		/* 0x04 */
+	u32	BLK_SIZE;		/* 0x08 */
+	u32	BLK_COUNT;		/* 0x0c */
+	u32	ARG_LOW;		/* 0x10 */
+	u32	ARG_HI;			/* 0x14 */
+	u32	XFER_MODE;		/* 0x18 */
+	u32	CMD;			/* 0x1c */
+	u32	RSP0;			/* 0x20 */
+	u32	RSP1;			/* 0x24 */
+	u32	RSP2;			/* 0x28 */
+	u32	RSP3;			/* 0x2c */
+	u32	RSP4;			/* 0x30 */
+	u32	RSP5;			/* 0x34 */
+	u32	RSP6;			/* 0x38 */
+	u32	RSP7;			/* 0x3c */
+	u32	BUF_DATA_PORT;		/* 0x40 */
+	u32	RSVED;			/* 0x44 */
+	u32	PRESENT_STATE0;		/* 0x48 */
+	u32	PRESENT_STATE1;		/* 0x4c */
+	u32	HOST_CTRL;		/* 0x50 */
+	u32	BLK_GAP_CTRL;		/* 0x54 */
+	u32	CLK_CTRL;		/* 0x58 */
+	u32	SW_RESET;		/* 0x5c */
+	u32	NOR_INTR_STATUS;	/* 0x60 */
+	u32	ERR_INTR_STATUS;	/* 0x64 */
+	u32	NOR_STATUS_EN;		/* 0x68 */
+	u32	ERR_STATUS_EN;		/* 0x6c */
+	u32	NOR_INTR_EN;		/* 0x70 */
+	u32	ERR_INTR_EN;		/* 0x74 */
+	u32	AUTOCMD12_ERR_STATUS;	/* 0x78 */
+	u32	CURR_BYTE_LEFT;		/* 0x7c */
+	u32	CURR_BLK_LEFT;		/* 0x80 */
+	u32	AUTOCMD12_ARG_LOW;	/* 0x84 */
+	u32	AUTOCMD12_ARG_HI;	/* 0x88 */
+	u32	AUTOCMD12_INDEX;	/* 0x8c */
+	u32	AUTO_RSP0;		/* 0x90 */
+	u32	AUTO_RSP1;		/* 0x94 */
+	u32	AUTO_RSP2;		/* 0x98 */
+	u32	_9c;			/* 0x9c */
+	u32	_a0[0x78];		/* 0xa0 */
+	u32	CLK_DIV;		/* 0x128 */
+
+} mv_sdio_t;
+
+#endif /* __ASSEMBLY__ */
+
+/*
+ * SDIO_PRESENT_STATE
+ */
+
+#define CARD_BUSY				(1 << 1)
+#define CMD_INHIBIT				(1 << 0)
+#define CMD_TXACTIVE				(1 << 8)
+#define CMD_RXACTIVE				(1 << 9)
+#define CMD_AUTOCMD12ACTIVE			(1 << 14)
+
+#define CMD_BUS_BUSY				(CMD_AUTOCMD12ACTIVE|	\
+						CMD_RXACTIVE|	\
+						CMD_TXACTIVE|	\
+						CMD_INHIBIT|	\
+						CARD_BUSY)
+
+/*
+ * SDIO_CMD
+ */
+
+#define SDIO_CMD_RSP_NONE			(0 << 0)
+#define SDIO_CMD_RSP_136			(1 << 0)
+#define SDIO_CMD_RSP_48				(2 << 0)
+#define SDIO_CMD_RSP_48BUSY			(3 << 0)
+
+#define SDIO_CMD_CHECK_DATACRC16		(1 << 2)
+#define SDIO_CMD_CHECK_CMDCRC			(1 << 3)
+#define SDIO_CMD_INDX_CHECK			(1 << 4)
+#define SDIO_CMD_DATA_PRESENT			(1 << 5)
+#define SDIO_UNEXPECTED_RESP			(1 << 7)
+
+
+/*
+ * SDIO_XFER_MODE
+ */
+
+#define SDIO_XFER_MODE_STOP_CLK			(1 << 5)
+#define SDIO_XFER_MODE_HW_WR_DATA_EN		(1 << 1)
+#define SDIO_XFER_MODE_AUTO_CMD12		(1 << 2)
+#define SDIO_XFER_MODE_INT_CHK_EN		(1 << 3)
+#define SDIO_XFER_MODE_TO_HOST			(1 << 4)
+
+
+/*
+ * SDIO_HOST_CTRL
+ */
+
+#define SDIO_HOST_CTRL_PUSH_PULL_EN 		(1 << 0)
+
+#define SDIO_HOST_CTRL_CARD_TYPE_MEM_ONLY 	(0 << 1)
+#define SDIO_HOST_CTRL_CARD_TYPE_IO_ONLY 	(1 << 1)
+#define SDIO_HOST_CTRL_CARD_TYPE_IO_MEM_COMBO 	(2 << 1)
+#define SDIO_HOST_CTRL_CARD_TYPE_IO_MMC 	(3 << 1)
+#define SDIO_HOST_CTRL_CARD_TYPE_MASK	 	(3 << 1)
+
+#define SDIO_HOST_CTRL_BIG_ENDIAN 		(1 << 3)
+#define SDIO_HOST_CTRL_LSB_FIRST 		(1 << 4)
+#define SDIO_HOST_CTRL_ID_MODE_LOW_FREQ 	(1 << 5)
+#define SDIO_HOST_CTRL_HALF_SPEED 		(1 << 6)
+#define SDIO_HOST_CTRL_DATA_WIDTH_4_BITS 	(1 << 9)
+#define SDIO_HOST_CTRL_HI_SPEED_EN 		(1 << 10)
+
+
+#define SDIO_HOST_CTRL_TMOUT_MASK 		(0xf << 11)
+#define SDIO_HOST_CTRL_TMOUT_MAX 		(0xf << 11)
+#define SDIO_HOST_CTRL_TMOUT(x) 		((x) << 11)
+#define SDIO_HOST_CTRL_TMOUT_EN 		(1 << 15)
+
+#define SDIO_HOST_CTRL_DFAULT_OPEN_DRAIN 	\
+		(SDIO_HOST_CTRL_TMOUT(x)(0xf))
+#define SDIO_HOST_CTRL_DFAULT_PUSH_PULL 	\
+		(SDIO_HOST_CTRL_TMOUT(x)(0xf) | SDIO_HOST_CTRL_PUSH_PULL_EN)
+
+
+/*
+ * NOR status bits
+ */
+
+#define SDIO_NOR_ERROR				(1 << 15)
+#define SDIO_NOR_UNEXP_RSP			(1 << 14)
+#define SDIO_NOR_AUTOCMD12_DONE			(1 << 13)
+#define SDIO_NOR_SUSPEND_ON			(1 << 12)
+#define SDIO_NOR_LMB_FF_8W_AVAIL		(1 << 11)
+#define SDIO_NOR_LMB_FF_8W_FILLED		(1 << 10)
+#define SDIO_NOR_READ_WAIT_ON			(1 << 9)
+#define SDIO_NOR_CARD_INT			(1 << 8)
+#define SDIO_NOR_READ_READY			(1 << 5)
+#define SDIO_NOR_WRITE_READY			(1 << 4)
+#define SDIO_NOR_DMA_INI			(1 << 3)
+#define SDIO_NOR_BLK_GAP_EVT			(1 << 2)
+#define SDIO_NOR_XFER_DONE			(1 << 1)
+#define SDIO_NOR_CMD_DONE			(1 << 0)
+
+
+/*
+ * ERR status bits
+ */
+
+#define SDIO_ERR_CRC_STATUS			(1 << 14)
+#define SDIO_ERR_CRC_STARTBIT			(1 << 13)
+#define SDIO_ERR_CRC_ENDBIT			(1 << 12)
+#define SDIO_ERR_RESP_TBIT			(1 << 11)
+#define SDIO_ERR_SIZE				(1 << 10)
+#define SDIO_ERR_CMD_STARTBIT			(1 << 9)
+#define SDIO_ERR_AUTOCMD12			(1 << 8)
+#define SDIO_ERR_DATA_ENDBIT			(1 << 6)
+#define SDIO_ERR_DATA_CRC			(1 << 5)
+#define SDIO_ERR_DATA_TIMEOUT			(1 << 4)
+#define SDIO_ERR_CMD_INDEX			(1 << 3)
+#define SDIO_ERR_CMD_ENDBIT			(1 << 2)
+#define SDIO_ERR_CMD_CRC			(1 << 1)
+#define SDIO_ERR_CMD_TIMEOUT			(1 << 0)
+
+#define SDIO_ERR_INTR_MASK			0xFFFF
+
+
+#define MMC_BLOCK_SIZE                  512
+#define MMC_CMD_RESET                   0
+#define MMC_CMD_SEND_OP_COND            1
+#define MMC_CMD_ALL_SEND_CID            2
+#define MMC_CMD_SET_RCA                 3
+#define MMC_CMD_SELECT_CARD		7
+#define MMC_CMD_SEND_CSD                9
+#define MMC_CMD_SEND_CID                10
+#define MMC_CMD_SEND_STATUS             13
+#define MMC_CMD_SET_BLOCKLEN            16
+#define MMC_CMD_READ_BLOCK              17
+#define MMC_CMD_RD_BLK_MULTI            18
+#define MMC_CMD_WRITE_BLOCK             24
+#define MMC_MAX_BLOCK_SIZE              512
+
+typedef struct mv_mmc_cid
+{
+	/* FIXME: BYTE_ORDER */
+	uchar year:4,
+	month:4;
+	uchar sn[3];
+	uchar fwrev:4,
+	hwrev:4;
+	uchar name[6];
+	uchar id[3];
+} mv_mmc_cid_t;
+
+typedef struct mv_mmc_csd
+{
+	uchar   ecc:2,
+		file_format:2,
+		tmp_write_protect:1,
+		perm_write_protect:1,
+		copy:1,
+		file_format_grp:1;
+	uint64_t content_prot_app:1,
+		rsvd3:4,
+		write_bl_partial:1,
+		write_bl_len:4,
+		r2w_factor:3,
+		default_ecc:2,
+		wp_grp_enable:1,
+		wp_grp_size:5,
+		erase_grp_mult:5,
+		erase_grp_size:5,
+		c_size_mult1:3,
+		vdd_w_curr_max:3,
+		vdd_w_curr_min:3,
+		vdd_r_curr_max:3,
+		vdd_r_curr_min:3,
+		c_size:12,
+		rsvd2:2,
+		dsr_imp:1,
+		read_blk_misalign:1,
+		write_blk_misalign:1,
+		read_bl_partial:1;
+	ushort  read_bl_len:4,
+		ccc:12;
+	uchar   tran_speed;
+	uchar   nsac;
+	uchar   taac;
+	uchar   rsvd1:2,
+		spec_vers:4,
+		csd_structure:2;
+} mv_mmc_csd_t;
+
+typedef struct {
+	char		pnm_0;	/* product name */
+	char		oid_1;	/* OEM/application ID */
+	char		oid_0;
+	uint8_t		mid;	/* manufacturer ID */
+	char		pnm_4;
+	char		pnm_3;
+	char		pnm_2;
+	char		pnm_1;
+	uint8_t		psn_2;	/* product serial number */
+	uint8_t		psn_1;
+	uint8_t		psn_0;	/* MSB */
+	uint8_t		prv;	/* product revision */
+	uint8_t		crc;	/* CRC7 checksum, b0 is unused and set to 1 */
+	uint8_t		mdt_1;	/* manufacturing date, LSB, RRRRyyyy yyyymmmm */
+	uint8_t		mdt_0;	/* MSB */
+	uint8_t		psn_3;	/* LSB */
+} mv_sd_cid_t;
+
+#endif /* _MVSDIO_INCLUDE */
-- 
1.7.1