/*
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* Copyright (C) 2016 Google, Inc
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* Written by Simon Glass <sjg@chromium.org>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <malloc.h>
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#include <mmc.h>
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#include "mmc_private.h"
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static struct list_head mmc_devices;
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static int cur_dev_num = -1;
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#if !CONFIG_IS_ENABLED(MMC_TINY)
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struct mmc *find_mmc_device(int dev_num)
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{
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struct mmc *m;
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struct list_head *entry;
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list_for_each(entry, &mmc_devices) {
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m = list_entry(entry, struct mmc, link);
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if (m->block_dev.devnum == dev_num)
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return m;
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}
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#if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
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printf("MMC Device %d not found\n", dev_num);
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#endif
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return NULL;
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}
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int mmc_get_next_devnum(void)
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{
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return cur_dev_num++;
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}
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struct blk_desc *mmc_get_blk_desc(struct mmc *mmc)
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{
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return &mmc->block_dev;
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}
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int get_mmc_num(void)
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{
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return cur_dev_num;
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}
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void mmc_do_preinit(void)
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{
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struct mmc *m;
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struct list_head *entry;
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list_for_each(entry, &mmc_devices) {
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m = list_entry(entry, struct mmc, link);
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#ifdef CONFIG_FSL_ESDHC_ADAPTER_IDENT
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mmc_set_preinit(m, 1);
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#endif
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if (m->preinit)
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mmc_start_init(m);
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}
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}
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#endif
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void mmc_list_init(void)
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{
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INIT_LIST_HEAD(&mmc_devices);
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cur_dev_num = 0;
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}
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void mmc_list_add(struct mmc *mmc)
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{
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INIT_LIST_HEAD(&mmc->link);
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list_add_tail(&mmc->link, &mmc_devices);
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}
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#if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
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void print_mmc_devices(char separator)
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{
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struct mmc *m;
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struct list_head *entry;
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char *mmc_type;
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list_for_each(entry, &mmc_devices) {
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m = list_entry(entry, struct mmc, link);
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if (m->has_init)
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mmc_type = IS_SD(m) ? "SD" : "eMMC";
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else
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mmc_type = NULL;
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printf("%s: %d", m->cfg->name, m->block_dev.devnum);
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if (mmc_type)
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printf(" (%s)", mmc_type);
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if (entry->next != &mmc_devices) {
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printf("%c", separator);
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if (separator != '\n')
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puts(" ");
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}
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}
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printf("\n");
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}
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#else
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void print_mmc_devices(char separator) { }
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#endif
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#if CONFIG_IS_ENABLED(MMC_TINY)
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static struct mmc mmc_static = {
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.dsr_imp = 0,
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.dsr = 0xffffffff,
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.block_dev = {
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.if_type = IF_TYPE_MMC,
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.removable = 1,
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.devnum = 0,
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.block_read = mmc_bread,
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.block_write = mmc_bwrite,
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.block_erase = mmc_berase,
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.part_type = 0,
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},
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};
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struct mmc *mmc_create(const struct mmc_config *cfg, void *priv)
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{
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struct mmc *mmc = &mmc_static;
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mmc->cfg = cfg;
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mmc->priv = priv;
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return mmc;
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}
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void mmc_destroy(struct mmc *mmc)
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{
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}
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#else
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struct mmc *mmc_create(const struct mmc_config *cfg, void *priv)
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{
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struct blk_desc *bdesc;
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struct mmc *mmc;
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/* quick validation */
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if (cfg == NULL || cfg->f_min == 0 ||
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cfg->f_max == 0 || cfg->b_max == 0)
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return NULL;
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#if !CONFIG_IS_ENABLED(DM_MMC)
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if (cfg->ops == NULL || cfg->ops->send_cmd == NULL)
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return NULL;
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#endif
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mmc = calloc(1, sizeof(*mmc));
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if (mmc == NULL)
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return NULL;
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mmc->cfg = cfg;
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mmc->priv = priv;
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/* the following chunk was mmc_register() */
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/* Setup dsr related values */
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mmc->dsr_imp = 0;
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mmc->dsr = 0xffffffff;
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/* Setup the universal parts of the block interface just once */
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bdesc = mmc_get_blk_desc(mmc);
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bdesc->if_type = IF_TYPE_MMC;
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bdesc->removable = 1;
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bdesc->devnum = mmc_get_next_devnum();
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bdesc->block_read = mmc_bread;
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bdesc->block_write = mmc_bwrite;
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bdesc->block_erase = mmc_berase;
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/* setup initial part type */
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bdesc->part_type = mmc->cfg->part_type;
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mmc_list_add(mmc);
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return mmc;
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}
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void mmc_destroy(struct mmc *mmc)
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{
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/* only freeing memory for now */
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free(mmc);
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}
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#endif
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static int mmc_select_hwpartp(struct blk_desc *desc, int hwpart)
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{
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struct mmc *mmc = find_mmc_device(desc->devnum);
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int ret;
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if (!mmc)
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return -ENODEV;
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if (mmc->block_dev.hwpart == hwpart)
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return 0;
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if (mmc->part_config == MMCPART_NOAVAILABLE)
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return -EMEDIUMTYPE;
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ret = mmc_switch_part(mmc, hwpart);
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if (ret)
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return ret;
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return 0;
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}
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static int mmc_get_dev(int dev, struct blk_desc **descp)
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{
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struct mmc *mmc = find_mmc_device(dev);
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int ret;
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if (!mmc)
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return -ENODEV;
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ret = mmc_init(mmc);
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if (ret)
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return ret;
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*descp = &mmc->block_dev;
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return 0;
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}
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U_BOOT_LEGACY_BLK(mmc) = {
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.if_typename = "mmc",
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.if_type = IF_TYPE_MMC,
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.max_devs = -1,
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.get_dev = mmc_get_dev,
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.select_hwpart = mmc_select_hwpartp,
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};
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