[u-boot.git] / drivers / mmc / mvebu_mmc.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Marvell MMC/SD/SDIO driver
 *
 * (C) Copyright 2012-2014
 * Marvell Semiconductor <www.marvell.com>
 * Written-by: Maen Suleiman, Gerald Kerma
 */

#include <common.h>
#include <errno.h>
#include <log.h>
#include <malloc.h>
#include <dm.h>
#include <fdtdec.h>
#include <part.h>
#include <mmc.h>
#include <asm/io.h>
#include <asm/arch/cpu.h>
#include <asm/arch/soc.h>
#include <mvebu_mmc.h>
#include <dm/device_compat.h>

#define MVEBU_TARGET_DRAM 0

#define TIMEOUT_DELAY	5*CONFIG_SYS_HZ		/* wait 5 seconds */

static inline void *get_regbase(const struct mmc *mmc)
{
	struct mvebu_mmc_plat *pdata = mmc->priv;

	return pdata->iobase;
}

static void mvebu_mmc_write(const struct mmc *mmc, u32 offs, u32 val)
{
	writel(val, get_regbase(mmc) + (offs));
}

static u32 mvebu_mmc_read(const struct mmc *mmc, u32 offs)
{
	return readl(get_regbase(mmc) + (offs));
}

static int mvebu_mmc_setup_data(struct udevice *dev, struct mmc_data *data)
{
	struct mvebu_mmc_plat *pdata = dev_get_plat(dev);
	struct mmc *mmc = &pdata->mmc;
	u32 ctrl_reg;

	dev_dbg(dev, "data %s : blocks=%d blksz=%d\n",
		(data->flags & MMC_DATA_READ) ? "read" : "write",
		data->blocks, data->blocksize);

	/* default to maximum timeout */
	ctrl_reg = mvebu_mmc_read(mmc, SDIO_HOST_CTRL);
	ctrl_reg |= SDIO_HOST_CTRL_TMOUT(SDIO_HOST_CTRL_TMOUT_MAX);
	mvebu_mmc_write(mmc, SDIO_HOST_CTRL, ctrl_reg);

	if (data->flags & MMC_DATA_READ) {
		mvebu_mmc_write(mmc, SDIO_SYS_ADDR_LOW, (u32)data->dest & 0xffff);
		mvebu_mmc_write(mmc, SDIO_SYS_ADDR_HI, (u32)data->dest >> 16);
	} else {
		mvebu_mmc_write(mmc, SDIO_SYS_ADDR_LOW, (u32)data->src & 0xffff);
		mvebu_mmc_write(mmc, SDIO_SYS_ADDR_HI, (u32)data->src >> 16);
	}

	mvebu_mmc_write(mmc, SDIO_BLK_COUNT, data->blocks);
	mvebu_mmc_write(mmc, SDIO_BLK_SIZE, data->blocksize);

	return 0;
}

static int mvebu_mmc_send_cmd(struct udevice *dev, struct mmc_cmd *cmd,
			      struct mmc_data *data)
{
	ulong start;
	ushort waittype = 0;
	ushort resptype = 0;
	ushort xfertype = 0;
	ushort resp_indx = 0;
	struct mvebu_mmc_plat *pdata = dev_get_plat(dev);
	struct mmc *mmc = &pdata->mmc;

	dev_dbg(dev, "cmdidx [0x%x] resp_type[0x%x] cmdarg[0x%x]\n",
		cmd->cmdidx, cmd->resp_type, cmd->cmdarg);

	dev_dbg(dev, "cmd %d (hw state 0x%04x)\n",
		cmd->cmdidx, mvebu_mmc_read(mmc, SDIO_HW_STATE));

	/*
	 * Hardware weirdness.  The FIFO_EMPTY bit of the HW_STATE
	 * register is sometimes not set before a while when some
	 * "unusual" data block sizes are used (such as with the SWITCH
	 * command), even despite the fact that the XFER_DONE interrupt
	 * was raised.  And if another data transfer starts before
	 * this bit comes to good sense (which eventually happens by
	 * itself) then the new transfer simply fails with a timeout.
	 */
	if (!(mvebu_mmc_read(mmc, SDIO_HW_STATE) & CMD_FIFO_EMPTY)) {
		ushort hw_state, count = 0;

		start = get_timer(0);
		do {
			hw_state = mvebu_mmc_read(mmc, SDIO_HW_STATE);
			if ((get_timer(0) - start) > TIMEOUT_DELAY) {
				printf("%s : FIFO_EMPTY bit missing\n",
				       dev->name);
				break;
			}
			count++;
		} while (!(hw_state & CMD_FIFO_EMPTY));
		dev_dbg(dev, "*** wait for FIFO_EMPTY bit (hw=0x%04x, count=%d, jiffies=%ld)\n",
			hw_state, count, (get_timer(0) - (start)));
	}

	/* Clear status */
	mvebu_mmc_write(mmc, SDIO_NOR_INTR_STATUS, SDIO_POLL_MASK);
	mvebu_mmc_write(mmc, SDIO_ERR_INTR_STATUS, SDIO_POLL_MASK);

	resptype = SDIO_CMD_INDEX(cmd->cmdidx);

	/* Analyzing resptype/xfertype/waittype for the command */
	if (cmd->resp_type & MMC_RSP_BUSY)
		resptype |= SDIO_CMD_RSP_48BUSY;
	else if (cmd->resp_type & MMC_RSP_136)
		resptype |= SDIO_CMD_RSP_136;
	else if (cmd->resp_type & MMC_RSP_PRESENT)
		resptype |= SDIO_CMD_RSP_48;
	else
		resptype |= SDIO_CMD_RSP_NONE;

	if (cmd->resp_type & MMC_RSP_CRC)
		resptype |= SDIO_CMD_CHECK_CMDCRC;

	if (cmd->resp_type & MMC_RSP_OPCODE)
		resptype |= SDIO_CMD_INDX_CHECK;

	if (cmd->resp_type & MMC_RSP_PRESENT) {
		resptype |= SDIO_UNEXPECTED_RESP;
		waittype |= SDIO_NOR_UNEXP_RSP;
	}

	if (data) {
		int err = mvebu_mmc_setup_data(dev, data);

		if (err) {
			dev_dbg(dev, "command DATA error :%x\n", err);
			return err;
		}

		resptype |= SDIO_CMD_DATA_PRESENT | SDIO_CMD_CHECK_DATACRC16;
		xfertype |= SDIO_XFER_MODE_HW_WR_DATA_EN;
		if (data->flags & MMC_DATA_READ) {
			xfertype |= SDIO_XFER_MODE_TO_HOST;
			waittype = SDIO_NOR_DMA_INI;
		} else {
			waittype |= SDIO_NOR_XFER_DONE;
		}
	} else {
		waittype |= SDIO_NOR_CMD_DONE;
	}

	/* Setting cmd arguments */
	mvebu_mmc_write(mmc, SDIO_ARG_LOW, cmd->cmdarg & 0xffff);
	mvebu_mmc_write(mmc, SDIO_ARG_HI, cmd->cmdarg >> 16);

	/* Setting Xfer mode */
	mvebu_mmc_write(mmc, SDIO_XFER_MODE, xfertype);

	/* Sending command */
	mvebu_mmc_write(mmc, SDIO_CMD, resptype);

	start = get_timer(0);

	while (!((mvebu_mmc_read(mmc, SDIO_NOR_INTR_STATUS)) & waittype)) {
		if (mvebu_mmc_read(mmc, SDIO_NOR_INTR_STATUS) & SDIO_NOR_ERROR) {
			dev_dbg(dev, "error! cmdidx : %d, err reg: %04x\n",
				cmd->cmdidx,
				mvebu_mmc_read(mmc, SDIO_ERR_INTR_STATUS));
			if (mvebu_mmc_read(mmc, SDIO_ERR_INTR_STATUS) &
			    (SDIO_ERR_CMD_TIMEOUT | SDIO_ERR_DATA_TIMEOUT)) {
				dev_dbg(dev, "command READ timed out\n");
				return -ETIMEDOUT;
			}
			dev_dbg(dev, "command READ error\n");
			return -ECOMM;
		}

		if ((get_timer(0) - start) > TIMEOUT_DELAY) {
			dev_dbg(dev, "command timed out\n");
			return -ETIMEDOUT;
		}
	}

	/* Handling response */
	if (cmd->resp_type & MMC_RSP_136) {
		uint response[8];

		for (resp_indx = 0; resp_indx < 8; resp_indx++)
			response[resp_indx] = mvebu_mmc_read(mmc, SDIO_RSP(resp_indx));

		cmd->response[0] =	((response[0] & 0x03ff) << 22) |
					((response[1] & 0xffff) << 6) |
					((response[2] & 0xfc00) >> 10);
		cmd->response[1] =	((response[2] & 0x03ff) << 22) |
					((response[3] & 0xffff) << 6) |
					((response[4] & 0xfc00) >> 10);
		cmd->response[2] =	((response[4] & 0x03ff) << 22) |
					((response[5] & 0xffff) << 6) |
					((response[6] & 0xfc00) >> 10);
		cmd->response[3] =	((response[6] & 0x03ff) << 22) |
					((response[7] & 0x3fff) << 8);
	} else if (cmd->resp_type & MMC_RSP_PRESENT) {
		uint response[3];

		for (resp_indx = 0; resp_indx < 3; resp_indx++)
			response[resp_indx] = mvebu_mmc_read(mmc, SDIO_RSP(resp_indx));

		cmd->response[0] =	((response[2] & 0x003f) << (8 - 8)) |
					((response[1] & 0xffff) << (14 - 8)) |
					((response[0] & 0x03ff) << (30 - 8));
		cmd->response[1] =	((response[0] & 0xfc00) >> 10);
		cmd->response[2] =	0;
		cmd->response[3] =	0;
	} else {
		cmd->response[0] =	0;
		cmd->response[1] =	0;
		cmd->response[2] =	0;
		cmd->response[3] =	0;
	}

	dev_dbg(dev, "resp[0x%x] ", cmd->resp_type);
	debug("[0x%x] ", cmd->response[0]);
	debug("[0x%x] ", cmd->response[1]);
	debug("[0x%x] ", cmd->response[2]);
	debug("[0x%x] ", cmd->response[3]);
	debug("\n");

	if (mvebu_mmc_read(mmc, SDIO_ERR_INTR_STATUS) &
		(SDIO_ERR_CMD_TIMEOUT | SDIO_ERR_DATA_TIMEOUT))
		return -ETIMEDOUT;

	return 0;
}

static void mvebu_mmc_power_up(struct udevice *dev)
{
	struct mvebu_mmc_plat *pdata = dev_get_plat(dev);
	struct mmc *mmc = &pdata->mmc;

	dev_dbg(dev, "power up\n");

	/* disable interrupts */
	mvebu_mmc_write(mmc, SDIO_NOR_INTR_EN, 0);
	mvebu_mmc_write(mmc, SDIO_ERR_INTR_EN, 0);

	/* SW reset */
	mvebu_mmc_write(mmc, SDIO_SW_RESET, SDIO_SW_RESET_NOW);

	mvebu_mmc_write(mmc, SDIO_XFER_MODE, 0);

	/* enable status */
	mvebu_mmc_write(mmc, SDIO_NOR_STATUS_EN, SDIO_POLL_MASK);
	mvebu_mmc_write(mmc, SDIO_ERR_STATUS_EN, SDIO_POLL_MASK);

	/* enable interrupts status */
	mvebu_mmc_write(mmc, SDIO_NOR_INTR_STATUS, SDIO_POLL_MASK);
	mvebu_mmc_write(mmc, SDIO_ERR_INTR_STATUS, SDIO_POLL_MASK);
}

static void mvebu_mmc_set_clk(struct udevice *dev, unsigned int clock)
{
	unsigned int m;
	struct mvebu_mmc_plat *pdata = dev_get_plat(dev);
	struct mmc *mmc = &pdata->mmc;

	if (clock == 0) {
		dev_dbg(dev, "clock off\n");
		mvebu_mmc_write(mmc, SDIO_XFER_MODE, SDIO_XFER_MODE_STOP_CLK);
		mvebu_mmc_write(mmc, SDIO_CLK_DIV, MVEBU_MMC_BASE_DIV_MAX);
	} else {
		m = MVEBU_MMC_BASE_FAST_CLOCK/(2*clock) - 1;
		if (m > MVEBU_MMC_BASE_DIV_MAX)
			m = MVEBU_MMC_BASE_DIV_MAX;
		mvebu_mmc_write(mmc, SDIO_CLK_DIV, m & MVEBU_MMC_BASE_DIV_MAX);
		dev_dbg(dev, "clock (%d) div : %d\n", clock, m);
	}
}

static void mvebu_mmc_set_bus(struct udevice *dev, unsigned int bus)
{
	struct mvebu_mmc_plat *pdata = dev_get_plat(dev);
	struct mmc *mmc = &pdata->mmc;
	u32 ctrl_reg = 0;

	ctrl_reg = mvebu_mmc_read(mmc, SDIO_HOST_CTRL);
	ctrl_reg &= ~SDIO_HOST_CTRL_DATA_WIDTH_4_BITS;

	switch (bus) {
	case 4:
		ctrl_reg |= SDIO_HOST_CTRL_DATA_WIDTH_4_BITS;
		break;
	case 1:
	default:
		ctrl_reg |= SDIO_HOST_CTRL_DATA_WIDTH_1_BIT;
	}

	/* default transfer mode */
	ctrl_reg |= SDIO_HOST_CTRL_BIG_ENDIAN;
	ctrl_reg &= ~SDIO_HOST_CTRL_LSB_FIRST;

	/* default to maximum timeout */
	ctrl_reg |= SDIO_HOST_CTRL_TMOUT(SDIO_HOST_CTRL_TMOUT_MAX);
	ctrl_reg |= SDIO_HOST_CTRL_TMOUT_EN;

	ctrl_reg |= SDIO_HOST_CTRL_PUSH_PULL_EN;

	ctrl_reg |= SDIO_HOST_CTRL_CARD_TYPE_MEM_ONLY;

	dev_dbg(dev, "ctrl 0x%04x: %s %s %s\n", ctrl_reg,
		(ctrl_reg & SDIO_HOST_CTRL_PUSH_PULL_EN) ?
		"push-pull" : "open-drain",
		(ctrl_reg & SDIO_HOST_CTRL_DATA_WIDTH_4_BITS) ?
		"4bit-width" : "1bit-width",
		(ctrl_reg & SDIO_HOST_CTRL_HI_SPEED_EN) ?
		"high-speed" : "");

	mvebu_mmc_write(mmc, SDIO_HOST_CTRL, ctrl_reg);
}

static int mvebu_mmc_set_ios(struct udevice *dev)
{
	struct mvebu_mmc_plat *pdata = dev_get_plat(dev);
	struct mmc *mmc = &pdata->mmc;

	dev_dbg(dev, "bus[%d] clock[%d]\n",
		mmc->bus_width, mmc->clock);
	mvebu_mmc_set_bus(dev, mmc->bus_width);
	mvebu_mmc_set_clk(dev, mmc->clock);

	return 0;
}

/*
 * Set window register.
 */
static void mvebu_window_setup(const struct mmc *mmc)
{
	int i;

	for (i = 0; i < 4; i++) {
		mvebu_mmc_write(mmc, WINDOW_CTRL(i), 0);
		mvebu_mmc_write(mmc, WINDOW_BASE(i), 0);
	}
	for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
		u32 size, base, attrib;

		/* Enable DRAM bank */
		switch (i) {
		case 0:
			attrib = KWCPU_ATTR_DRAM_CS0;
			break;
		case 1:
			attrib = KWCPU_ATTR_DRAM_CS1;
			break;
		case 2:
			attrib = KWCPU_ATTR_DRAM_CS2;
			break;
		case 3:
			attrib = KWCPU_ATTR_DRAM_CS3;
			break;
		default:
			/* invalide bank, disable access */
			attrib = 0;
			break;
		}

		size = gd->bd->bi_dram[i].size;
		base = gd->bd->bi_dram[i].start;
		if (size && attrib) {
			mvebu_mmc_write(mmc, WINDOW_CTRL(i),
					MVCPU_WIN_CTRL_DATA(size,
							    MVEBU_TARGET_DRAM,
							    attrib,
							    MVCPU_WIN_ENABLE));
		} else {
			mvebu_mmc_write(mmc, WINDOW_CTRL(i), MVCPU_WIN_DISABLE);
		}
		mvebu_mmc_write(mmc, WINDOW_BASE(i), base);
	}
}

static int mvebu_mmc_initialize(struct udevice *dev)
{
	struct mvebu_mmc_plat *pdata = dev_get_plat(dev);
	struct mmc *mmc = &pdata->mmc;

	dev_dbg(dev, "%s\n", __func__);

	/*
	 * Setting host parameters
	 * Initial Host Ctrl : Timeout : max , Normal Speed mode,
	 * 4-bit data mode, Big Endian, SD memory Card, Push_pull CMD Line
	 */
	mvebu_mmc_write(mmc, SDIO_HOST_CTRL,
			SDIO_HOST_CTRL_TMOUT(SDIO_HOST_CTRL_TMOUT_MAX) |
			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);

	mvebu_mmc_write(mmc, SDIO_CLK_CTRL, 0);

	/* enable status */
	mvebu_mmc_write(mmc, SDIO_NOR_STATUS_EN, SDIO_POLL_MASK);
	mvebu_mmc_write(mmc, SDIO_ERR_STATUS_EN, SDIO_POLL_MASK);

	/* disable interrupts */
	mvebu_mmc_write(mmc, SDIO_NOR_INTR_EN, 0);
	mvebu_mmc_write(mmc, SDIO_ERR_INTR_EN, 0);

	mvebu_window_setup(mmc);

	/* SW reset */
	mvebu_mmc_write(mmc, SDIO_SW_RESET, SDIO_SW_RESET_NOW);

	return 0;
}

static int mvebu_mmc_of_to_plat(struct udevice *dev)
{
	struct mvebu_mmc_plat *pdata = dev_get_plat(dev);
	fdt_addr_t addr;

	addr = dev_read_addr(dev);
	if (addr == FDT_ADDR_T_NONE)
		return -EINVAL;

	pdata->iobase = (void *)addr;

	return 0;
}

static int mvebu_mmc_probe(struct udevice *dev)
{
	struct mvebu_mmc_plat *pdata = dev_get_plat(dev);
	struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
	struct mmc *mmc = &pdata->mmc;
	struct mmc_config *cfg = &pdata->cfg;

	cfg->name = dev->name;
	cfg->f_min = MVEBU_MMC_BASE_FAST_CLOCK / MVEBU_MMC_BASE_DIV_MAX;
	cfg->f_max = MVEBU_MMC_CLOCKRATE_MAX;
	cfg->voltages = MMC_VDD_32_33 | MMC_VDD_33_34;
	cfg->host_caps = MMC_MODE_4BIT | MMC_MODE_HS | MMC_MODE_HS_52MHz;
	cfg->part_type = PART_TYPE_DOS;
	cfg->b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT;

	mmc->cfg = cfg;
	mmc->priv = pdata;
	mmc->dev = dev;
	upriv->mmc = mmc;

	mvebu_mmc_power_up(dev);
	mvebu_mmc_initialize(dev);

	return 0;
}

static const struct dm_mmc_ops mvebu_dm_mmc_ops = {
	.send_cmd = mvebu_mmc_send_cmd,
	.set_ios = mvebu_mmc_set_ios,
};

static int mvebu_mmc_bind(struct udevice *dev)
{
	struct mvebu_mmc_plat *pdata = dev_get_plat(dev);

	return mmc_bind(dev, &pdata->mmc, &pdata->cfg);
}

static const struct udevice_id mvebu_mmc_match[] = {
	{ .compatible = "marvell,orion-sdio" },
	{ /* sentinel */ }
};

U_BOOT_DRIVER(mvebu_mmc) = {
	.name = "mvebu_mmc",
	.id = UCLASS_MMC,
	.of_match = mvebu_mmc_match,
	.ops = &mvebu_dm_mmc_ops,
	.probe = mvebu_mmc_probe,
	.bind = mvebu_mmc_bind,
	.of_to_plat = mvebu_mmc_of_to_plat,
	.plat_auto = sizeof(struct mvebu_mmc_plat),
};
Commit	Line	Data
83d290c5	1	// SPDX-License-Identifier: GPL-2.0+
3fe3b4fb D	2	/*
	3	* Marvell MMC/SD/SDIO driver
	4	*
2591fbdb	5	* (C) Copyright 2012-2014
3fe3b4fb D	6	* Marvell Semiconductor <www.marvell.com>
3fe3b4fb D	7	* Written-by: Maen Suleiman, Gerald Kerma
3fe3b4fb D	8	*/
3fe3b4fb D	9
d678a59d	10	#include <common.h>
915ffa52	11	#include <errno.h>
f7ae49fc	12	#include <log.h>
3fe3b4fb	13	#include <malloc.h>
c689ae04 HB	14	#include <dm.h>
c689ae04 HB	15	#include <fdtdec.h>
3fe3b4fb D	16	#include <part.h>
	17	#include <mmc.h>
	18	#include <asm/io.h>
	19	#include <asm/arch/cpu.h>
3dc23f78	20	#include <asm/arch/soc.h>
3fe3b4fb	21	#include <mvebu_mmc.h>
c689ae04	22	#include <dm/device_compat.h>
3fe3b4fb	23
bcd06989 MS	24	#define MVEBU_TARGET_DRAM 0
bcd06989 MS	25
28d27b79 GK	26	#define TIMEOUT_DELAY 5CONFIG_SYS_HZ / wait 5 seconds */
28d27b79 GK	27
c689ae04	28	static inline void get_regbase(const struct mmc mmc)
3fe3b4fb	29	{
c689ae04 HB	30	struct mvebu_mmc_plat *pdata = mmc->priv;
	31
	32	return pdata->iobase;
3fe3b4fb D	33	}
3fe3b4fb D	34
c689ae04	35	static void mvebu_mmc_write(const struct mmc *mmc, u32 offs, u32 val)
3fe3b4fb	36	{
c689ae04	37	writel(val, get_regbase(mmc) + (offs));
3fe3b4fb D	38	}
3fe3b4fb D	39
c689ae04	40	static u32 mvebu_mmc_read(const struct mmc *mmc, u32 offs)
3fe3b4fb	41	{
c689ae04 HB	42	return readl(get_regbase(mmc) + (offs));
	43	}
	44
	45	static int mvebu_mmc_setup_data(struct udevice dev, struct mmc_data data)
	46	{
	47	struct mvebu_mmc_plat *pdata = dev_get_plat(dev);
	48	struct mmc *mmc = &pdata->mmc;
3fe3b4fb D	49	u32 ctrl_reg;
3fe3b4fb D	50
c689ae04 HB	51	dev_dbg(dev, "data %s : blocks=%d blksz=%d\n",
	52	(data->flags & MMC_DATA_READ) ? "read" : "write",
	53	data->blocks, data->blocksize);
3fe3b4fb D	54
3fe3b4fb D	55	/* default to maximum timeout */
c689ae04	56	ctrl_reg = mvebu_mmc_read(mmc, SDIO_HOST_CTRL);
3fe3b4fb	57	ctrl_reg \|= SDIO_HOST_CTRL_TMOUT(SDIO_HOST_CTRL_TMOUT_MAX);
c689ae04	58	mvebu_mmc_write(mmc, SDIO_HOST_CTRL, ctrl_reg);
3fe3b4fb D	59
3fe3b4fb D	60	if (data->flags & MMC_DATA_READ) {
c689ae04 HB	61	mvebu_mmc_write(mmc, SDIO_SYS_ADDR_LOW, (u32)data->dest & 0xffff);
c689ae04 HB	62	mvebu_mmc_write(mmc, SDIO_SYS_ADDR_HI, (u32)data->dest >> 16);
3fe3b4fb	63	} else {
c689ae04 HB	64	mvebu_mmc_write(mmc, SDIO_SYS_ADDR_LOW, (u32)data->src & 0xffff);
c689ae04 HB	65	mvebu_mmc_write(mmc, SDIO_SYS_ADDR_HI, (u32)data->src >> 16);
3fe3b4fb D	66	}
3fe3b4fb D	67
c689ae04 HB	68	mvebu_mmc_write(mmc, SDIO_BLK_COUNT, data->blocks);
c689ae04 HB	69	mvebu_mmc_write(mmc, SDIO_BLK_SIZE, data->blocksize);
3fe3b4fb D	70
	71	return 0;
	72	}
	73
c689ae04	74	static int mvebu_mmc_send_cmd(struct udevice dev, struct mmc_cmd cmd,
3fe3b4fb D	75	struct mmc_data *data)
3fe3b4fb D	76	{
28d27b79	77	ulong start;
3fe3b4fb D	78	ushort waittype = 0;
	79	ushort resptype = 0;
	80	ushort xfertype = 0;
	81	ushort resp_indx = 0;
c689ae04 HB	82	struct mvebu_mmc_plat *pdata = dev_get_plat(dev);
c689ae04 HB	83	struct mmc *mmc = &pdata->mmc;
3fe3b4fb	84
c689ae04 HB	85	dev_dbg(dev, "cmdidx [0x%x] resp_type[0x%x] cmdarg[0x%x]\n",
c689ae04 HB	86	cmd->cmdidx, cmd->resp_type, cmd->cmdarg);
3fe3b4fb	87
c689ae04 HB	88	dev_dbg(dev, "cmd %d (hw state 0x%04x)\n",
c689ae04 HB	89	cmd->cmdidx, mvebu_mmc_read(mmc, SDIO_HW_STATE));
3fe3b4fb	90
28d27b79 GK	91	/*
	92	* Hardware weirdness. The FIFO_EMPTY bit of the HW_STATE
	93	* register is sometimes not set before a while when some
	94	* "unusual" data block sizes are used (such as with the SWITCH
	95	* command), even despite the fact that the XFER_DONE interrupt
	96	* was raised. And if another data transfer starts before
	97	* this bit comes to good sense (which eventually happens by
	98	* itself) then the new transfer simply fails with a timeout.
	99	*/
c689ae04	100	if (!(mvebu_mmc_read(mmc, SDIO_HW_STATE) & CMD_FIFO_EMPTY)) {
28d27b79 GK	101	ushort hw_state, count = 0;
	102
	103	start = get_timer(0);
	104	do {
c689ae04	105	hw_state = mvebu_mmc_read(mmc, SDIO_HW_STATE);
28d27b79 GK	106	if ((get_timer(0) - start) > TIMEOUT_DELAY) {
28d27b79 GK	107	printf("%s : FIFO_EMPTY bit missing\n",
c689ae04	108	dev->name);
28d27b79 GK	109	break;
	110	}
	111	count++;
	112	} while (!(hw_state & CMD_FIFO_EMPTY));
c689ae04 HB	113	dev_dbg(dev, "*** wait for FIFO_EMPTY bit (hw=0x%04x, count=%d, jiffies=%ld)\n",
c689ae04 HB	114	hw_state, count, (get_timer(0) - (start)));
3fe3b4fb D	115	}
3fe3b4fb D	116
02b2739e	117	/* Clear status */
c689ae04 HB	118	mvebu_mmc_write(mmc, SDIO_NOR_INTR_STATUS, SDIO_POLL_MASK);
c689ae04 HB	119	mvebu_mmc_write(mmc, SDIO_ERR_INTR_STATUS, SDIO_POLL_MASK);
3fe3b4fb D	120
	121	resptype = SDIO_CMD_INDEX(cmd->cmdidx);
	122
	123	/* Analyzing resptype/xfertype/waittype for the command */
	124	if (cmd->resp_type & MMC_RSP_BUSY)
	125	resptype \|= SDIO_CMD_RSP_48BUSY;
	126	else if (cmd->resp_type & MMC_RSP_136)
	127	resptype \|= SDIO_CMD_RSP_136;
	128	else if (cmd->resp_type & MMC_RSP_PRESENT)
	129	resptype \|= SDIO_CMD_RSP_48;
	130	else
	131	resptype \|= SDIO_CMD_RSP_NONE;
	132
	133	if (cmd->resp_type & MMC_RSP_CRC)
	134	resptype \|= SDIO_CMD_CHECK_CMDCRC;
	135
	136	if (cmd->resp_type & MMC_RSP_OPCODE)
	137	resptype \|= SDIO_CMD_INDX_CHECK;
	138
	139	if (cmd->resp_type & MMC_RSP_PRESENT) {
	140	resptype \|= SDIO_UNEXPECTED_RESP;
	141	waittype \|= SDIO_NOR_UNEXP_RSP;
	142	}
	143
	144	if (data) {
c689ae04	145	int err = mvebu_mmc_setup_data(dev, data);
02b2739e GK	146
02b2739e GK	147	if (err) {
c689ae04	148	dev_dbg(dev, "command DATA error :%x\n", err);
02b2739e GK	149	return err;
	150	}
	151
3fe3b4fb D	152	resptype \|= SDIO_CMD_DATA_PRESENT \| SDIO_CMD_CHECK_DATACRC16;
	153	xfertype \|= SDIO_XFER_MODE_HW_WR_DATA_EN;
	154	if (data->flags & MMC_DATA_READ) {
	155	xfertype \|= SDIO_XFER_MODE_TO_HOST;
	156	waittype = SDIO_NOR_DMA_INI;
	157	} else {
	158	waittype \|= SDIO_NOR_XFER_DONE;
	159	}
	160	} else {
	161	waittype \|= SDIO_NOR_CMD_DONE;
	162	}
	163
	164	/* Setting cmd arguments */
c689ae04 HB	165	mvebu_mmc_write(mmc, SDIO_ARG_LOW, cmd->cmdarg & 0xffff);
c689ae04 HB	166	mvebu_mmc_write(mmc, SDIO_ARG_HI, cmd->cmdarg >> 16);
3fe3b4fb D	167
3fe3b4fb D	168	/* Setting Xfer mode */
c689ae04	169	mvebu_mmc_write(mmc, SDIO_XFER_MODE, xfertype);
3fe3b4fb	170
3fe3b4fb	171	/* Sending command */
c689ae04	172	mvebu_mmc_write(mmc, SDIO_CMD, resptype);
3fe3b4fb	173
28d27b79	174	start = get_timer(0);
3fe3b4fb	175
c689ae04 HB	176	while (!((mvebu_mmc_read(mmc, SDIO_NOR_INTR_STATUS)) & waittype)) {
	177	if (mvebu_mmc_read(mmc, SDIO_NOR_INTR_STATUS) & SDIO_NOR_ERROR) {
	178	dev_dbg(dev, "error! cmdidx : %d, err reg: %04x\n",
	179	cmd->cmdidx,
	180	mvebu_mmc_read(mmc, SDIO_ERR_INTR_STATUS));
	181	if (mvebu_mmc_read(mmc, SDIO_ERR_INTR_STATUS) &
fc0f25f9	182	(SDIO_ERR_CMD_TIMEOUT \| SDIO_ERR_DATA_TIMEOUT)) {
c689ae04	183	dev_dbg(dev, "command READ timed out\n");
915ffa52	184	return -ETIMEDOUT;
fc0f25f9	185	}
c689ae04	186	dev_dbg(dev, "command READ error\n");
915ffa52	187	return -ECOMM;
3fe3b4fb D	188	}
3fe3b4fb D	189
28d27b79	190	if ((get_timer(0) - start) > TIMEOUT_DELAY) {
c689ae04	191	dev_dbg(dev, "command timed out\n");
915ffa52	192	return -ETIMEDOUT;
3fe3b4fb D	193	}
3fe3b4fb D	194	}
28d27b79	195
3fe3b4fb D	196	/* Handling response */
	197	if (cmd->resp_type & MMC_RSP_136) {
	198	uint response[8];
	199
	200	for (resp_indx = 0; resp_indx < 8; resp_indx++)
c689ae04	201	response[resp_indx] = mvebu_mmc_read(mmc, SDIO_RSP(resp_indx));
3fe3b4fb D	202
	203	cmd->response[0] = ((response[0] & 0x03ff) << 22) \|
	204	((response[1] & 0xffff) << 6) \|
	205	((response[2] & 0xfc00) >> 10);
	206	cmd->response[1] = ((response[2] & 0x03ff) << 22) \|
	207	((response[3] & 0xffff) << 6) \|
	208	((response[4] & 0xfc00) >> 10);
	209	cmd->response[2] = ((response[4] & 0x03ff) << 22) \|
	210	((response[5] & 0xffff) << 6) \|
	211	((response[6] & 0xfc00) >> 10);
	212	cmd->response[3] = ((response[6] & 0x03ff) << 22) \|
	213	((response[7] & 0x3fff) << 8);
	214	} else if (cmd->resp_type & MMC_RSP_PRESENT) {
	215	uint response[3];
	216
	217	for (resp_indx = 0; resp_indx < 3; resp_indx++)
c689ae04	218	response[resp_indx] = mvebu_mmc_read(mmc, SDIO_RSP(resp_indx));
3fe3b4fb D	219
	220	cmd->response[0] = ((response[2] & 0x003f) << (8 - 8)) \|
	221	((response[1] & 0xffff) << (14 - 8)) \|
	222	((response[0] & 0x03ff) << (30 - 8));
	223	cmd->response[1] = ((response[0] & 0xfc00) >> 10);
	224	cmd->response[2] = 0;
	225	cmd->response[3] = 0;
02b2739e GK	226	} else {
	227	cmd->response[0] = 0;
	228	cmd->response[1] = 0;
	229	cmd->response[2] = 0;
	230	cmd->response[3] = 0;
3fe3b4fb D	231	}
3fe3b4fb D	232
c689ae04	233	dev_dbg(dev, "resp[0x%x] ", cmd->resp_type);
3fe3b4fb D	234	debug("[0x%x] ", cmd->response[0]);
	235	debug("[0x%x] ", cmd->response[1]);
	236	debug("[0x%x] ", cmd->response[2]);
	237	debug("[0x%x] ", cmd->response[3]);
	238	debug("\n");
	239
c689ae04	240	if (mvebu_mmc_read(mmc, SDIO_ERR_INTR_STATUS) &
02b2739e	241	(SDIO_ERR_CMD_TIMEOUT \| SDIO_ERR_DATA_TIMEOUT))
915ffa52	242	return -ETIMEDOUT;
02b2739e	243
3fe3b4fb D	244	return 0;
	245	}
	246
c689ae04	247	static void mvebu_mmc_power_up(struct udevice *dev)
3fe3b4fb	248	{
c689ae04 HB	249	struct mvebu_mmc_plat *pdata = dev_get_plat(dev);
	250	struct mmc *mmc = &pdata->mmc;
	251
	252	dev_dbg(dev, "power up\n");
3fe3b4fb D	253
3fe3b4fb D	254	/* disable interrupts */
c689ae04 HB	255	mvebu_mmc_write(mmc, SDIO_NOR_INTR_EN, 0);
c689ae04 HB	256	mvebu_mmc_write(mmc, SDIO_ERR_INTR_EN, 0);
3fe3b4fb D	257
3fe3b4fb D	258	/* SW reset */
c689ae04	259	mvebu_mmc_write(mmc, SDIO_SW_RESET, SDIO_SW_RESET_NOW);
3fe3b4fb	260
c689ae04	261	mvebu_mmc_write(mmc, SDIO_XFER_MODE, 0);
3fe3b4fb D	262
3fe3b4fb D	263	/* enable status */
c689ae04 HB	264	mvebu_mmc_write(mmc, SDIO_NOR_STATUS_EN, SDIO_POLL_MASK);
c689ae04 HB	265	mvebu_mmc_write(mmc, SDIO_ERR_STATUS_EN, SDIO_POLL_MASK);
3fe3b4fb D	266
3fe3b4fb D	267	/* enable interrupts status */
c689ae04 HB	268	mvebu_mmc_write(mmc, SDIO_NOR_INTR_STATUS, SDIO_POLL_MASK);
c689ae04 HB	269	mvebu_mmc_write(mmc, SDIO_ERR_INTR_STATUS, SDIO_POLL_MASK);
3fe3b4fb D	270	}
3fe3b4fb D	271
c689ae04	272	static void mvebu_mmc_set_clk(struct udevice *dev, unsigned int clock)
3fe3b4fb D	273	{
3fe3b4fb D	274	unsigned int m;
c689ae04 HB	275	struct mvebu_mmc_plat *pdata = dev_get_plat(dev);
c689ae04 HB	276	struct mmc *mmc = &pdata->mmc;
3fe3b4fb D	277
3fe3b4fb D	278	if (clock == 0) {
c689ae04 HB	279	dev_dbg(dev, "clock off\n");
	280	mvebu_mmc_write(mmc, SDIO_XFER_MODE, SDIO_XFER_MODE_STOP_CLK);
	281	mvebu_mmc_write(mmc, SDIO_CLK_DIV, MVEBU_MMC_BASE_DIV_MAX);
3fe3b4fb D	282	} else {
	283	m = MVEBU_MMC_BASE_FAST_CLOCK/(2*clock) - 1;
	284	if (m > MVEBU_MMC_BASE_DIV_MAX)
	285	m = MVEBU_MMC_BASE_DIV_MAX;
c689ae04 HB	286	mvebu_mmc_write(mmc, SDIO_CLK_DIV, m & MVEBU_MMC_BASE_DIV_MAX);
c689ae04 HB	287	dev_dbg(dev, "clock (%d) div : %d\n", clock, m);
3fe3b4fb	288	}
3fe3b4fb D	289	}
3fe3b4fb D	290
c689ae04	291	static void mvebu_mmc_set_bus(struct udevice *dev, unsigned int bus)
3fe3b4fb	292	{
c689ae04 HB	293	struct mvebu_mmc_plat *pdata = dev_get_plat(dev);
c689ae04 HB	294	struct mmc *mmc = &pdata->mmc;
3fe3b4fb D	295	u32 ctrl_reg = 0;
3fe3b4fb D	296
c689ae04	297	ctrl_reg = mvebu_mmc_read(mmc, SDIO_HOST_CTRL);
3fe3b4fb D	298	ctrl_reg &= ~SDIO_HOST_CTRL_DATA_WIDTH_4_BITS;
	299
	300	switch (bus) {
	301	case 4:
	302	ctrl_reg \|= SDIO_HOST_CTRL_DATA_WIDTH_4_BITS;
	303	break;
	304	case 1:
	305	default:
	306	ctrl_reg \|= SDIO_HOST_CTRL_DATA_WIDTH_1_BIT;
	307	}
	308
	309	/* default transfer mode */
	310	ctrl_reg \|= SDIO_HOST_CTRL_BIG_ENDIAN;
	311	ctrl_reg &= ~SDIO_HOST_CTRL_LSB_FIRST;
	312
	313	/* default to maximum timeout */
	314	ctrl_reg \|= SDIO_HOST_CTRL_TMOUT(SDIO_HOST_CTRL_TMOUT_MAX);
bcd06989	315	ctrl_reg \|= SDIO_HOST_CTRL_TMOUT_EN;
3fe3b4fb D	316
	317	ctrl_reg \|= SDIO_HOST_CTRL_PUSH_PULL_EN;
	318
	319	ctrl_reg \|= SDIO_HOST_CTRL_CARD_TYPE_MEM_ONLY;
	320
c689ae04 HB	321	dev_dbg(dev, "ctrl 0x%04x: %s %s %s\n", ctrl_reg,
	322	(ctrl_reg & SDIO_HOST_CTRL_PUSH_PULL_EN) ?
	323	"push-pull" : "open-drain",
	324	(ctrl_reg & SDIO_HOST_CTRL_DATA_WIDTH_4_BITS) ?
	325	"4bit-width" : "1bit-width",
	326	(ctrl_reg & SDIO_HOST_CTRL_HI_SPEED_EN) ?
	327	"high-speed" : "");
3fe3b4fb	328
c689ae04	329	mvebu_mmc_write(mmc, SDIO_HOST_CTRL, ctrl_reg);
3fe3b4fb D	330	}
3fe3b4fb D	331
c689ae04	332	static int mvebu_mmc_set_ios(struct udevice *dev)
3fe3b4fb	333	{
c689ae04 HB	334	struct mvebu_mmc_plat *pdata = dev_get_plat(dev);
	335	struct mmc *mmc = &pdata->mmc;
	336
	337	dev_dbg(dev, "bus[%d] clock[%d]\n",
	338	mmc->bus_width, mmc->clock);
	339	mvebu_mmc_set_bus(dev, mmc->bus_width);
	340	mvebu_mmc_set_clk(dev, mmc->clock);
07b0b9c0 JC	341
07b0b9c0 JC	342	return 0;
3fe3b4fb D	343	}
3fe3b4fb D	344
bcd06989 MS	345	/*
	346	* Set window register.
	347	*/
c689ae04	348	static void mvebu_window_setup(const struct mmc *mmc)
bcd06989 MS	349	{
	350	int i;
	351
	352	for (i = 0; i < 4; i++) {
c689ae04 HB	353	mvebu_mmc_write(mmc, WINDOW_CTRL(i), 0);
c689ae04 HB	354	mvebu_mmc_write(mmc, WINDOW_BASE(i), 0);
bcd06989 MS	355	}
	356	for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
	357	u32 size, base, attrib;
	358
	359	/* Enable DRAM bank */
	360	switch (i) {
	361	case 0:
	362	attrib = KWCPU_ATTR_DRAM_CS0;
	363	break;
	364	case 1:
	365	attrib = KWCPU_ATTR_DRAM_CS1;
	366	break;
	367	case 2:
	368	attrib = KWCPU_ATTR_DRAM_CS2;
	369	break;
	370	case 3:
	371	attrib = KWCPU_ATTR_DRAM_CS3;
	372	break;
	373	default:
	374	/* invalide bank, disable access */
	375	attrib = 0;
	376	break;
	377	}
	378
	379	size = gd->bd->bi_dram[i].size;
	380	base = gd->bd->bi_dram[i].start;
	381	if (size && attrib) {
c689ae04	382	mvebu_mmc_write(mmc, WINDOW_CTRL(i),
bcd06989 MS	383	MVCPU_WIN_CTRL_DATA(size,
	384	MVEBU_TARGET_DRAM,
	385	attrib,
	386	MVCPU_WIN_ENABLE));
	387	} else {
c689ae04	388	mvebu_mmc_write(mmc, WINDOW_CTRL(i), MVCPU_WIN_DISABLE);
bcd06989	389	}
c689ae04	390	mvebu_mmc_write(mmc, WINDOW_BASE(i), base);
bcd06989 MS	391	}
	392	}
	393
c689ae04	394	static int mvebu_mmc_initialize(struct udevice *dev)
3fe3b4fb	395	{
c689ae04 HB	396	struct mvebu_mmc_plat *pdata = dev_get_plat(dev);
	397	struct mmc *mmc = &pdata->mmc;
	398
	399	dev_dbg(dev, "%s\n", __func__);
3fe3b4fb D	400
	401	/*
	402	* Setting host parameters
	403	* Initial Host Ctrl : Timeout : max , Normal Speed mode,
	404	* 4-bit data mode, Big Endian, SD memory Card, Push_pull CMD Line
	405	*/
c689ae04	406	mvebu_mmc_write(mmc, SDIO_HOST_CTRL,
3fe3b4fb D	407	SDIO_HOST_CTRL_TMOUT(SDIO_HOST_CTRL_TMOUT_MAX) \|
	408	SDIO_HOST_CTRL_DATA_WIDTH_4_BITS \|
	409	SDIO_HOST_CTRL_BIG_ENDIAN \|
	410	SDIO_HOST_CTRL_PUSH_PULL_EN \|
	411	SDIO_HOST_CTRL_CARD_TYPE_MEM_ONLY);
	412
c689ae04	413	mvebu_mmc_write(mmc, SDIO_CLK_CTRL, 0);
3fe3b4fb D	414
3fe3b4fb D	415	/* enable status */
c689ae04 HB	416	mvebu_mmc_write(mmc, SDIO_NOR_STATUS_EN, SDIO_POLL_MASK);
c689ae04 HB	417	mvebu_mmc_write(mmc, SDIO_ERR_STATUS_EN, SDIO_POLL_MASK);
3fe3b4fb D	418
3fe3b4fb D	419	/* disable interrupts */
c689ae04 HB	420	mvebu_mmc_write(mmc, SDIO_NOR_INTR_EN, 0);
c689ae04 HB	421	mvebu_mmc_write(mmc, SDIO_ERR_INTR_EN, 0);
3fe3b4fb	422
c689ae04	423	mvebu_window_setup(mmc);
bcd06989	424
3fe3b4fb	425	/* SW reset */
c689ae04	426	mvebu_mmc_write(mmc, SDIO_SW_RESET, SDIO_SW_RESET_NOW);
3fe3b4fb	427
3fe3b4fb D	428	return 0;
	429	}
	430
c689ae04 HB	431	static int mvebu_mmc_of_to_plat(struct udevice *dev)
	432	{
	433	struct mvebu_mmc_plat *pdata = dev_get_plat(dev);
	434	fdt_addr_t addr;
3fe3b4fb	435
c689ae04 HB	436	addr = dev_read_addr(dev);
	437	if (addr == FDT_ADDR_T_NONE)
	438	return -EINVAL;
3fe3b4fb	439
c689ae04	440	pdata->iobase = (void *)addr;
3fe3b4fb	441
c689ae04 HB	442	return 0;
c689ae04 HB	443	}
3fe3b4fb	444
c689ae04 HB	445	static int mvebu_mmc_probe(struct udevice *dev)
	446	{
	447	struct mvebu_mmc_plat *pdata = dev_get_plat(dev);
	448	struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
	449	struct mmc *mmc = &pdata->mmc;
	450	struct mmc_config *cfg = &pdata->cfg;
	451
	452	cfg->name = dev->name;
	453	cfg->f_min = MVEBU_MMC_BASE_FAST_CLOCK / MVEBU_MMC_BASE_DIV_MAX;
	454	cfg->f_max = MVEBU_MMC_CLOCKRATE_MAX;
	455	cfg->voltages = MMC_VDD_32_33 \| MMC_VDD_33_34;
	456	cfg->host_caps = MMC_MODE_4BIT \| MMC_MODE_HS \| MMC_MODE_HS_52MHz;
	457	cfg->part_type = PART_TYPE_DOS;
	458	cfg->b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT;
	459
	460	mmc->cfg = cfg;
	461	mmc->priv = pdata;
	462	mmc->dev = dev;
	463	upriv->mmc = mmc;
	464
	465	mvebu_mmc_power_up(dev);
	466	mvebu_mmc_initialize(dev);
3fe3b4fb D	467
	468	return 0;
	469	}
c689ae04 HB	470
	471	static const struct dm_mmc_ops mvebu_dm_mmc_ops = {
	472	.send_cmd = mvebu_mmc_send_cmd,
	473	.set_ios = mvebu_mmc_set_ios,
	474	};
	475
	476	static int mvebu_mmc_bind(struct udevice *dev)
	477	{
	478	struct mvebu_mmc_plat *pdata = dev_get_plat(dev);
	479
	480	return mmc_bind(dev, &pdata->mmc, &pdata->cfg);
	481	}
	482
	483	static const struct udevice_id mvebu_mmc_match[] = {
	484	{ .compatible = "marvell,orion-sdio" },
	485	{ /* sentinel */ }
	486	};
	487
	488	U_BOOT_DRIVER(mvebu_mmc) = {
	489	.name = "mvebu_mmc",
	490	.id = UCLASS_MMC,
	491	.of_match = mvebu_mmc_match,
	492	.ops = &mvebu_dm_mmc_ops,
	493	.probe = mvebu_mmc_probe,
	494	.bind = mvebu_mmc_bind,
	495	.of_to_plat = mvebu_mmc_of_to_plat,
	496	.plat_auto = sizeof(struct mvebu_mmc_plat),
	497	};