LXR uboot/drivers/mmc/mv

   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 * Marvell SD Host Controller Interface
   4 */
   5
   6#include <common.h>
   7#include <dm.h>
   8#include <malloc.h>
   9#include <sdhci.h>
  10#include <linux/mbus.h>
  11
  12#define MVSDH_NAME "mv_sdh"
  13
  14#define SDHCI_WINDOW_CTRL(win)          (0x4080 + ((win) << 4))
  15#define SDHCI_WINDOW_BASE(win)          (0x4084 + ((win) << 4))
  16
  17static void sdhci_mvebu_mbus_config(void __iomem *base)
  18{
  19        const struct mbus_dram_target_info *dram;
  20        int i;
  21
  22        dram = mvebu_mbus_dram_info();
  23
  24        for (i = 0; i < 4; i++) {
  25                writel(0, base + SDHCI_WINDOW_CTRL(i));
  26                writel(0, base + SDHCI_WINDOW_BASE(i));
  27        }
  28
  29        for (i = 0; i < dram->num_cs; i++) {
  30                const struct mbus_dram_window *cs = dram->cs + i;
  31
  32                /* Write size, attributes and target id to control register */
  33                writel(((cs->size - 1) & 0xffff0000) | (cs->mbus_attr << 8) |
  34                       (dram->mbus_dram_target_id << 4) | 1,
  35                       base + SDHCI_WINDOW_CTRL(i));
  36
  37                /* Write base address to base register */
  38                writel(cs->base, base + SDHCI_WINDOW_BASE(i));
  39        }
  40}
  41
  42#ifndef CONFIG_DM_MMC
  43
  44#ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS
  45static struct sdhci_ops mv_ops;
  46
  47#if defined(CONFIG_SHEEVA_88SV331xV5)
  48#define SD_CE_ATA_2     0xEA
  49#define  MMC_CARD       0x1000
  50#define  MMC_WIDTH      0x0100
  51static inline void mv_sdhci_writeb(struct sdhci_host *host, u8 val, int reg)
  52{
  53        struct mmc *mmc = host->mmc;
  54        u32 ata = (unsigned long)host->ioaddr + SD_CE_ATA_2;
  55
  56        if (!IS_SD(mmc) && reg == SDHCI_HOST_CONTROL) {
  57                if (mmc->bus_width == 8)
  58                        writew(readw(ata) | (MMC_CARD | MMC_WIDTH), ata);
  59                else
  60                        writew(readw(ata) & ~(MMC_CARD | MMC_WIDTH), ata);
  61        }
  62
  63        writeb(val, host->ioaddr + reg);
  64}
  65
  66#else
  67#define mv_sdhci_writeb NULL
  68#endif /* CONFIG_SHEEVA_88SV331xV5 */
  69#endif /* CONFIG_MMC_SDHCI_IO_ACCESSORS */
  70
  71int mv_sdh_init(unsigned long regbase, u32 max_clk, u32 min_clk, u32 quirks)
  72{
  73        struct sdhci_host *host = NULL;
  74        host = calloc(1, sizeof(*host));
  75        if (!host) {
  76                printf("sdh_host malloc fail!\n");
  77                return -ENOMEM;
  78        }
  79
  80        host->name = MVSDH_NAME;
  81        host->ioaddr = (void *)regbase;
  82        host->quirks = quirks;
  83        host->max_clk = max_clk;
  84#ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS
  85        memset(&mv_ops, 0, sizeof(struct sdhci_ops));
  86        mv_ops.write_b = mv_sdhci_writeb;
  87        host->ops = &mv_ops;
  88#endif
  89
  90        if (CONFIG_IS_ENABLED(ARCH_MVEBU)) {
  91                /* Configure SDHCI MBUS mbus bridge windows */
  92                sdhci_mvebu_mbus_config((void __iomem *)regbase);
  93        }
  94
  95        return add_sdhci(host, 0, min_clk);
  96}
  97
  98#else
  99
 100DECLARE_GLOBAL_DATA_PTR;
 101
 102struct mv_sdhci_plat {
 103        struct mmc_config cfg;
 104        struct mmc mmc;
 105};
 106
 107static int mv_sdhci_probe(struct udevice *dev)
 108{
 109        struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
 110        struct mv_sdhci_plat *plat = dev_get_platdata(dev);
 111        struct sdhci_host *host = dev_get_priv(dev);
 112        int ret;
 113
 114        host->name = MVSDH_NAME;
 115        host->ioaddr = dev_read_addr_ptr(dev);
 116        host->quirks = SDHCI_QUIRK_32BIT_DMA_ADDR | SDHCI_QUIRK_WAIT_SEND_CMD;
 117        host->mmc = &plat->mmc;
 118        host->mmc->dev = dev;
 119        host->mmc->priv = host;
 120
 121        ret = sdhci_setup_cfg(&plat->cfg, host, 0, 0);
 122        if (ret)
 123                return ret;
 124
 125        if (CONFIG_IS_ENABLED(ARCH_MVEBU)) {
 126                /* Configure SDHCI MBUS mbus bridge windows */
 127                sdhci_mvebu_mbus_config(host->ioaddr);
 128        }
 129
 130        upriv->mmc = host->mmc;
 131
 132        return sdhci_probe(dev);
 133}
 134
 135static int mv_sdhci_bind(struct udevice *dev)
 136{
 137        struct mv_sdhci_plat *plat = dev_get_platdata(dev);
 138
 139        return sdhci_bind(dev, &plat->mmc, &plat->cfg);
 140}
 141
 142static const struct udevice_id mv_sdhci_ids[] = {
 143        { .compatible = "marvell,armada-380-sdhci" },
 144        { }
 145};
 146
 147U_BOOT_DRIVER(mv_sdhci_drv) = {
 148        .name           = MVSDH_NAME,
 149        .id             = UCLASS_MMC,
 150        .of_match       = mv_sdhci_ids,
 151        .bind           = mv_sdhci_bind,
 152        .probe          = mv_sdhci_probe,
 153        .ops            = &sdhci_ops,
 154        .priv_auto_alloc_size = sizeof(struct sdhci_host),
 155        .platdata_auto_alloc_size = sizeof(struct mv_sdhci_plat),
 156};
 157#endif /* CONFIG_DM_MMC */
 158