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dm: mmc: Move the device list into a separate file

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At present the MMC subsystem maintains its own list of MMC devices. This
cannot work with driver model, which needs to maintain this itself. Move the
list code into a separate 'legacy' file. The core MMC code remains, and will
be shared with the driver-model implementation.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2016-05-01 13:52:35 -06:00
parent cffe5d86cf
commit c40fdca6b7
6 changed files with 176 additions and 121 deletions
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8
cmd/mmc.c
View File

@ -348,7 +348,7 @@ static int do_mmc_read(cmd_tbl_t *cmdtp, int flag,
printf("\nMMC read: dev # %d, block # %d, count %d ... ",
curr_device, blk, cnt);
n = blk_dread(&mmc->block_dev, blk, cnt, addr);
n = blk_dread(mmc_get_blk_desc(mmc), blk, cnt, addr);
/* flush cache after read */
flush_cache((ulong)addr, cnt * 512); /* FIXME */
printf("%d blocks read: %s\n", n, (n == cnt) ? "OK" : "ERROR");
@ -380,7 +380,7 @@ static int do_mmc_write(cmd_tbl_t *cmdtp, int flag,
printf("Error: card is write protected!\n");
return CMD_RET_FAILURE;
}
n = blk_dwrite(&mmc->block_dev, blk, cnt, addr);
n = blk_dwrite(mmc_get_blk_desc(mmc), blk, cnt, addr);
printf("%d blocks written: %s\n", n, (n == cnt) ? "OK" : "ERROR");
return (n == cnt) ? CMD_RET_SUCCESS : CMD_RET_FAILURE;
@ -408,7 +408,7 @@ static int do_mmc_erase(cmd_tbl_t *cmdtp, int flag,
printf("Error: card is write protected!\n");
return CMD_RET_FAILURE;
}
n = blk_derase(&mmc->block_dev, blk, cnt);
n = blk_derase(mmc_get_blk_desc(mmc), blk, cnt);
printf("%d blocks erased: %s\n", n, (n == cnt) ? "OK" : "ERROR");
return (n == cnt) ? CMD_RET_SUCCESS : CMD_RET_FAILURE;
@ -480,7 +480,7 @@ static int do_mmc_dev(cmd_tbl_t *cmdtp, int flag,
printf("mmc%d is current device\n", curr_device);
else
printf("mmc%d(part %d) is current device\n",
curr_device, mmc->block_dev.hwpart);
curr_device, mmc_get_blk_desc(mmc)->hwpart);
return CMD_RET_SUCCESS;
}

4
drivers/mmc/Makefile
View File

@ -7,6 +7,10 @@
obj-$(CONFIG_DM_MMC) += mmc-uclass.o
ifndef CONFIG_BLK
obj-$(CONFIG_GENERIC_MMC) += mmc_legacy.o
endif
obj-$(CONFIG_ARM_PL180_MMCI) += arm_pl180_mmci.o
obj-$(CONFIG_ATMEL_SDHCI) += atmel_sdhci.o
obj-$(CONFIG_BCM2835_SDHCI) += bcm2835_sdhci.o

149
drivers/mmc/mmc.c
View File

@ -21,14 +21,6 @@
#include <div64.h>
#include "mmc_private.h"
static struct list_head mmc_devices;
static int cur_dev_num = -1;
struct blk_desc *mmc_get_blk_desc(struct mmc *mmc)
{
return &mmc->block_dev;
}
__weak int board_mmc_getwp(struct mmc *mmc)
{
return -1;
@ -183,25 +175,6 @@ int mmc_set_blocklen(struct mmc *mmc, int len)
return mmc_send_cmd(mmc, &cmd, NULL);
}
struct mmc *find_mmc_device(int dev_num)
{
struct mmc *m;
struct list_head *entry;
list_for_each(entry, &mmc_devices) {
m = list_entry(entry, struct mmc, link);
if (m->block_dev.devnum == dev_num)
return m;
}
#if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
printf("MMC Device %d not found\n", dev_num);
#endif
return NULL;
}
static int mmc_read_blocks(struct mmc *mmc, void *dst, lbaint_t start,
lbaint_t blkcnt)
{
@ -261,10 +234,10 @@ static ulong mmc_bread(struct blk_desc *block_dev, lbaint_t start,
if (err < 0)
return 0;
if ((start + blkcnt) > mmc->block_dev.lba) {
if ((start + blkcnt) > block_dev->lba) {
#if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
printf("MMC: block number 0x" LBAF " exceeds max(0x" LBAF ")\n",
start + blkcnt, mmc->block_dev.lba);
start + blkcnt, block_dev->lba);
#endif
return 0;
}
@ -582,7 +555,7 @@ static int mmc_set_capacity(struct mmc *mmc, int part_num)
return -1;
}
mmc->block_dev.lba = lldiv(mmc->capacity, mmc->read_bl_len);
mmc_get_blk_desc(mmc)->lba = lldiv(mmc->capacity, mmc->read_bl_len);
return 0;
}
@ -1062,6 +1035,7 @@ static int mmc_startup(struct mmc *mmc)
int timeout = 1000;
bool has_parts = false;
bool part_completed;
struct blk_desc *bdesc;
#ifdef CONFIG_MMC_SPI_CRC_ON
if (mmc_host_is_spi(mmc)) { /* enable CRC check for spi */
@ -1358,7 +1332,7 @@ static int mmc_startup(struct mmc *mmc)
mmc->wr_rel_set = ext_csd[EXT_CSD_WR_REL_SET];
}
err = mmc_set_capacity(mmc, mmc->block_dev.hwpart);
err = mmc_set_capacity(mmc, mmc_get_blk_desc(mmc)->hwpart);
if (err)
return err;
@ -1498,31 +1472,32 @@ static int mmc_startup(struct mmc *mmc)
}
/* fill in device description */
mmc->block_dev.lun = 0;
mmc->block_dev.hwpart = 0;
mmc->block_dev.type = 0;
mmc->block_dev.blksz = mmc->read_bl_len;
mmc->block_dev.log2blksz = LOG2(mmc->block_dev.blksz);
mmc->block_dev.lba = lldiv(mmc->capacity, mmc->read_bl_len);
bdesc = mmc_get_blk_desc(mmc);
bdesc->lun = 0;
bdesc->hwpart = 0;
bdesc->type = 0;
bdesc->blksz = mmc->read_bl_len;
bdesc->log2blksz = LOG2(bdesc->blksz);
bdesc->lba = lldiv(mmc->capacity, mmc->read_bl_len);
#if !defined(CONFIG_SPL_BUILD) || \
(defined(CONFIG_SPL_LIBCOMMON_SUPPORT) && \
!defined(CONFIG_USE_TINY_PRINTF))
sprintf(mmc->block_dev.vendor, "Man %06x Snr %04x%04x",
sprintf(bdesc->vendor, "Man %06x Snr %04x%04x",
mmc->cid[0] >> 24, (mmc->cid[2] & 0xffff),
(mmc->cid[3] >> 16) & 0xffff);
sprintf(mmc->block_dev.product, "%c%c%c%c%c%c", mmc->cid[0] & 0xff,
sprintf(bdesc->product, "%c%c%c%c%c%c", mmc->cid[0] & 0xff,
(mmc->cid[1] >> 24), (mmc->cid[1] >> 16) & 0xff,
(mmc->cid[1] >> 8) & 0xff, mmc->cid[1] & 0xff,
(mmc->cid[2] >> 24) & 0xff);
sprintf(mmc->block_dev.revision, "%d.%d", (mmc->cid[2] >> 20) & 0xf,
sprintf(bdesc->revision, "%d.%d", (mmc->cid[2] >> 20) & 0xf,
(mmc->cid[2] >> 16) & 0xf);
#else
mmc->block_dev.vendor[0] = 0;
mmc->block_dev.product[0] = 0;
mmc->block_dev.revision[0] = 0;
bdesc->vendor[0] = 0;
bdesc->product[0] = 0;
bdesc->revision[0] = 0;
#endif
#if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBDISK_SUPPORT)
part_init(&mmc->block_dev);
part_init(bdesc);
#endif
return 0;
@ -1562,6 +1537,7 @@ int __deprecated mmc_register(struct mmc *mmc)
struct mmc *mmc_create(const struct mmc_config *cfg, void *priv)
{
struct blk_desc *bdesc;
struct mmc *mmc;
/* quick validation */
@ -1582,19 +1558,17 @@ struct mmc *mmc_create(const struct mmc_config *cfg, void *priv)
mmc->dsr_imp = 0;
mmc->dsr = 0xffffffff;
/* Setup the universal parts of the block interface just once */
mmc->block_dev.if_type = IF_TYPE_MMC;
mmc->block_dev.devnum = cur_dev_num++;
mmc->block_dev.removable = 1;
mmc->block_dev.block_read = mmc_bread;
mmc->block_dev.block_write = mmc_bwrite;
mmc->block_dev.block_erase = mmc_berase;
bdesc = mmc_get_blk_desc(mmc);
bdesc->if_type = IF_TYPE_MMC;
bdesc->removable = 1;
bdesc->devnum = mmc_get_next_devnum();
bdesc->block_read = mmc_bread;
bdesc->block_write = mmc_bwrite;
bdesc->block_erase = mmc_berase;
/* setup initial part type */
mmc->block_dev.part_type = mmc->cfg->part_type;
INIT_LIST_HEAD(&mmc->link);
list_add_tail(&mmc->link, &mmc_devices);
bdesc->part_type = mmc->cfg->part_type;
mmc_list_add(mmc);
return mmc;
}
@ -1664,7 +1638,7 @@ int mmc_start_init(struct mmc *mmc)
return err;
/* The internal partition reset to user partition(0) at every CMD0*/
mmc->block_dev.hwpart = 0;
mmc_get_blk_desc(mmc)->hwpart = 0;
/* Test for SD version 2 */
err = mmc_send_if_cond(mmc);
@ -1744,66 +1718,11 @@ __weak int board_mmc_init(bd_t *bis)
return -1;
}
#if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
void print_mmc_devices(char separator)
{
struct mmc *m;
struct list_head *entry;
char *mmc_type;
list_for_each(entry, &mmc_devices) {
m = list_entry(entry, struct mmc, link);
if (m->has_init)
mmc_type = IS_SD(m) ? "SD" : "eMMC";
else
mmc_type = NULL;
printf("%s: %d", m->cfg->name, m->block_dev.devnum);
if (mmc_type)
printf(" (%s)", mmc_type);
if (entry->next != &mmc_devices) {
printf("%c", separator);
if (separator != '\n')
puts (" ");
}
}
printf("\n");
}
#else
void print_mmc_devices(char separator) { }
#endif
int get_mmc_num(void)
{
return cur_dev_num;
}
void mmc_set_preinit(struct mmc *mmc, int preinit)
{
mmc->preinit = preinit;
}
static void do_preinit(void)
{
struct mmc *m;
struct list_head *entry;
list_for_each(entry, &mmc_devices) {
m = list_entry(entry, struct mmc, link);
#ifdef CONFIG_FSL_ESDHC_ADAPTER_IDENT
mmc_set_preinit(m, 1);
#endif
if (m->preinit)
mmc_start_init(m);
}
}
#if defined(CONFIG_DM_MMC) && defined(CONFIG_SPL_BUILD)
static int mmc_probe(bd_t *bis)
{
@ -1856,9 +1775,9 @@ int mmc_initialize(bd_t *bis)
return 0;
initialized = 1;
INIT_LIST_HEAD (&mmc_devices);
cur_dev_num = 0;
#ifndef CONFIG_BLK
mmc_list_init();
#endif
ret = mmc_probe(bis);
if (ret)
return ret;
@ -1867,7 +1786,7 @@ int mmc_initialize(bd_t *bis)
print_mmc_devices(',');
#endif
do_preinit();
mmc_do_preinit();
return 0;
}

108
drivers/mmc/mmc_legacy.c Normal file
View File

@ -0,0 +1,108 @@
/*
* Copyright (C) 2016 Google, Inc
* Written by Simon Glass <sjg@chromium.org>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <mmc.h>
static struct list_head mmc_devices;
static int cur_dev_num = -1;
struct mmc *find_mmc_device(int dev_num)
{
struct mmc *m;
struct list_head *entry;
list_for_each(entry, &mmc_devices) {
m = list_entry(entry, struct mmc, link);
if (m->block_dev.devnum == dev_num)
return m;
}
#if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
printf("MMC Device %d not found\n", dev_num);
#endif
return NULL;
}
int mmc_get_next_devnum(void)
{
return cur_dev_num++;
}
struct blk_desc *mmc_get_blk_desc(struct mmc *mmc)
{
return &mmc->block_dev;
}
int get_mmc_num(void)
{
return cur_dev_num;
}
void mmc_do_preinit(void)
{
struct mmc *m;
struct list_head *entry;
list_for_each(entry, &mmc_devices) {
m = list_entry(entry, struct mmc, link);
#ifdef CONFIG_FSL_ESDHC_ADAPTER_IDENT
mmc_set_preinit(m, 1);
#endif
if (m->preinit)
mmc_start_init(m);
}
}
void mmc_list_init(void)
{
INIT_LIST_HEAD(&mmc_devices);
cur_dev_num = 0;
}
void mmc_list_add(struct mmc *mmc)
{
INIT_LIST_HEAD(&mmc->link);
list_add_tail(&mmc->link, &mmc_devices);
}
#if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
void print_mmc_devices(char separator)
{
struct mmc *m;
struct list_head *entry;
char *mmc_type;
list_for_each(entry, &mmc_devices) {
m = list_entry(entry, struct mmc, link);
if (m->has_init)
mmc_type = IS_SD(m) ? "SD" : "eMMC";
else
mmc_type = NULL;
printf("%s: %d", m->cfg->name, m->block_dev.devnum);
if (mmc_type)
printf(" (%s)", mmc_type);
if (entry->next != &mmc_devices) {
printf("%c", separator);
if (separator != '\n')
puts(" ");
}
}
printf("\n");
}
#else
void print_mmc_devices(char separator) { }
#endif

24
drivers/mmc/mmc_private.h
View File

@ -46,4 +46,28 @@ static inline ulong mmc_bwrite(struct blk_desc *block_dev, lbaint_t start,
#endif /* CONFIG_SPL_BUILD */
/**
* mmc_get_next_devnum() - Get the next available MMC device number
*
* @return next available device number (0 = first), or -ve on error
*/
int mmc_get_next_devnum(void);
/**
* mmc_do_preinit() - Get an MMC device ready for use
*/
void mmc_do_preinit(void);
/**
* mmc_list_init() - Set up the list of MMC devices
*/
void mmc_list_init(void);
/**
* mmc_list_add() - Add a new MMC device to the list of devices
*
* @mmc: Device to add
*/
void mmc_list_add(struct mmc *mmc);
#endif /* _MMC_PRIVATE_H_ */

4
drivers/mmc/mmc_write.c
View File

@ -122,9 +122,9 @@ static ulong mmc_write_blocks(struct mmc *mmc, lbaint_t start,
struct mmc_data data;
int timeout = 1000;
if ((start + blkcnt) > mmc->block_dev.lba) {
if ((start + blkcnt) > mmc_get_blk_desc(mmc)->lba) {
printf("MMC: block number 0x" LBAF " exceeds max(0x" LBAF ")\n",
start + blkcnt, mmc->block_dev.lba);
start + blkcnt, mmc_get_blk_desc(mmc)->lba);
return 0;
}