[people/ms/u-boot.git] / drivers / mmc / mv_sdhci.c

/*
 * Marvell SD Host Controller Interface
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <common.h>
#include <malloc.h>
#include <sdhci.h>
#include <linux/mbus.h>

#define SDHCI_WINDOW_CTRL(win)		(0x4080 + ((win) << 4))
#define SDHCI_WINDOW_BASE(win)		(0x4084 + ((win) << 4))

static void sdhci_mvebu_mbus_config(void __iomem *base)
{
	const struct mbus_dram_target_info *dram;
	int i;

	dram = mvebu_mbus_dram_info();

	for (i = 0; i < 4; i++) {
		writel(0, base + SDHCI_WINDOW_CTRL(i));
		writel(0, base + SDHCI_WINDOW_BASE(i));
	}

	for (i = 0; i < dram->num_cs; i++) {
		const struct mbus_dram_window *cs = dram->cs + i;

		/* Write size, attributes and target id to control register */
		writel(((cs->size - 1) & 0xffff0000) | (cs->mbus_attr << 8) |
		       (dram->mbus_dram_target_id << 4) | 1,
		       base + SDHCI_WINDOW_CTRL(i));

		/* Write base address to base register */
		writel(cs->base, base + SDHCI_WINDOW_BASE(i));
	}
}

#ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS
static struct sdhci_ops mv_ops;

#if defined(CONFIG_SHEEVA_88SV331xV5)
#define SD_CE_ATA_2	0xEA
#define  MMC_CARD	0x1000
#define  MMC_WIDTH	0x0100
static inline void mv_sdhci_writeb(struct sdhci_host *host, u8 val, int reg)
{
	struct mmc *mmc = host->mmc;
	u32 ata = (unsigned long)host->ioaddr + SD_CE_ATA_2;

	if (!IS_SD(mmc) && reg == SDHCI_HOST_CONTROL) {
		if (mmc->bus_width == 8)
			writew(readw(ata) | (MMC_CARD | MMC_WIDTH), ata);
		else
			writew(readw(ata) & ~(MMC_CARD | MMC_WIDTH), ata);
	}

	writeb(val, host->ioaddr + reg);
}

#else
#define mv_sdhci_writeb	NULL
#endif /* CONFIG_SHEEVA_88SV331xV5 */
#endif /* CONFIG_MMC_SDHCI_IO_ACCESSORS */

static char *MVSDH_NAME = "mv_sdh";
int mv_sdh_init(unsigned long regbase, u32 max_clk, u32 min_clk, u32 quirks)
{
	struct sdhci_host *host = NULL;
	host = (struct sdhci_host *)malloc(sizeof(struct sdhci_host));
	if (!host) {
		printf("sdh_host malloc fail!\n");
		return -ENOMEM;
	}

	host->name = MVSDH_NAME;
	host->ioaddr = (void *)regbase;
	host->quirks = quirks;
	host->max_clk = max_clk;
#ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS
	memset(&mv_ops, 0, sizeof(struct sdhci_ops));
	mv_ops.write_b = mv_sdhci_writeb;
	host->ops = &mv_ops;
#endif

	if (CONFIG_IS_ENABLED(ARCH_MVEBU)) {
		/* Configure SDHCI MBUS mbus bridge windows */
		sdhci_mvebu_mbus_config((void __iomem *)regbase);
	}

	return add_sdhci(host, 0, min_clk);
}
Commit	Line	Data
5b37212a SR	1	/*
	2	* Marvell SD Host Controller Interface
	3	*
	4	* SPDX-License-Identifier: GPL-2.0+
	5	*/
	6
e75787d9 LW	7	#include <common.h>
	8	#include <malloc.h>
	9	#include <sdhci.h>
5b37212a SR	10	#include <linux/mbus.h>
	11
	12	#define SDHCI_WINDOW_CTRL(win) (0x4080 + ((win) << 4))
	13	#define SDHCI_WINDOW_BASE(win) (0x4084 + ((win) << 4))
	14
	15	static void sdhci_mvebu_mbus_config(void __iomem *base)
	16	{
	17	const struct mbus_dram_target_info *dram;
	18	int i;
	19
	20	dram = mvebu_mbus_dram_info();
	21
	22	for (i = 0; i < 4; i++) {
	23	writel(0, base + SDHCI_WINDOW_CTRL(i));
	24	writel(0, base + SDHCI_WINDOW_BASE(i));
	25	}
	26
	27	for (i = 0; i < dram->num_cs; i++) {
	28	const struct mbus_dram_window *cs = dram->cs + i;
	29
	30	/* Write size, attributes and target id to control register */
	31	writel(((cs->size - 1) & 0xffff0000) \| (cs->mbus_attr << 8) \|
	32	(dram->mbus_dram_target_id << 4) \| 1,
	33	base + SDHCI_WINDOW_CTRL(i));
	34
	35	/* Write base address to base register */
	36	writel(cs->base, base + SDHCI_WINDOW_BASE(i));
	37	}
	38	}
e75787d9	39
02d3ad3e LW	40	#ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS
	41	static struct sdhci_ops mv_ops;
	42
	43	#if defined(CONFIG_SHEEVA_88SV331xV5)
	44	#define SD_CE_ATA_2 0xEA
	45	#define MMC_CARD 0x1000
	46	#define MMC_WIDTH 0x0100
	47	static inline void mv_sdhci_writeb(struct sdhci_host *host, u8 val, int reg)
	48	{
	49	struct mmc *mmc = host->mmc;
3a48944b	50	u32 ata = (unsigned long)host->ioaddr + SD_CE_ATA_2;
02d3ad3e LW	51
	52	if (!IS_SD(mmc) && reg == SDHCI_HOST_CONTROL) {
	53	if (mmc->bus_width == 8)
	54	writew(readw(ata) \| (MMC_CARD \| MMC_WIDTH), ata);
	55	else
	56	writew(readw(ata) & ~(MMC_CARD \| MMC_WIDTH), ata);
	57	}
	58
	59	writeb(val, host->ioaddr + reg);
	60	}
	61
	62	#else
	63	#define mv_sdhci_writeb NULL
	64	#endif /* CONFIG_SHEEVA_88SV331xV5 */
	65	#endif /* CONFIG_MMC_SDHCI_IO_ACCESSORS */
	66
e75787d9	67	static char *MVSDH_NAME = "mv_sdh";
3a48944b	68	int mv_sdh_init(unsigned long regbase, u32 max_clk, u32 min_clk, u32 quirks)
e75787d9 LW	69	{
	70	struct sdhci_host *host = NULL;
	71	host = (struct sdhci_host *)malloc(sizeof(struct sdhci_host));
	72	if (!host) {
	73	printf("sdh_host malloc fail!\n");
2cb5d67c	74	return -ENOMEM;
e75787d9 LW	75	}
	76
	77	host->name = MVSDH_NAME;
	78	host->ioaddr = (void *)regbase;
	79	host->quirks = quirks;
6d0e34bf	80	host->max_clk = max_clk;
02d3ad3e LW	81	#ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS
02d3ad3e LW	82	memset(&mv_ops, 0, sizeof(struct sdhci_ops));
bfe6f623	83	mv_ops.write_b = mv_sdhci_writeb;
02d3ad3e LW	84	host->ops = &mv_ops;
02d3ad3e LW	85	#endif
5b37212a SR	86
	87	if (CONFIG_IS_ENABLED(ARCH_MVEBU)) {
	88	/* Configure SDHCI MBUS mbus bridge windows */
	89	sdhci_mvebu_mbus_config((void __iomem *)regbase);
	90	}
	91
6d0e34bf	92	return add_sdhci(host, 0, min_clk);
e75787d9	93	}