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/*
* 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 1;
}
host->name = MVSDH_NAME;
host->ioaddr = (void *)regbase;
host->quirks = quirks;
#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);
}
if (quirks & SDHCI_QUIRK_REG32_RW)
host->version = sdhci_readl(host, SDHCI_HOST_VERSION - 2) >> 16;
else
host->version = sdhci_readw(host, SDHCI_HOST_VERSION);
return add_sdhci(host, max_clk, min_clk);
}
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