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https://github.com/AsahiLinux/u-boot
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dm: mmc: Add support for driver-model block devices
Add support for enabling CONFIG_BLK with MMC. This involves changing a few functions to use struct udevice and adding a MMC block device driver. Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass
parent
ad27dd5e13
commit
33fb211dd2
5 changed files with 70 additions and 42 deletions
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@ -216,9 +216,17 @@ static int mmc_read_blocks(struct mmc *mmc, void *dst, lbaint_t start,
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return blkcnt;
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}
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#ifdef CONFIG_BLK
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static ulong mmc_bread(struct udevice *dev, lbaint_t start, lbaint_t blkcnt,
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void *dst)
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#else
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static ulong mmc_bread(struct blk_desc *block_dev, lbaint_t start,
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lbaint_t blkcnt, void *dst)
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#endif
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{
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#ifdef CONFIG_BLK
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struct blk_desc *block_dev = dev_get_uclass_platdata(dev);
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#endif
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int dev_num = block_dev->devnum;
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int err;
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lbaint_t cur, blocks_todo = blkcnt;
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@ -580,6 +588,27 @@ static int mmc_switch_part(struct mmc *mmc, unsigned int part_num)
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return ret;
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}
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#ifdef CONFIG_BLK
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static int mmc_select_hwpart(struct udevice *bdev, int hwpart)
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{
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struct udevice *mmc_dev = dev_get_parent(bdev);
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struct mmc *mmc = mmc_get_mmc_dev(mmc_dev);
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struct blk_desc *desc = dev_get_uclass_platdata(bdev);
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int ret;
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if (desc->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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#else
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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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@ -600,27 +629,7 @@ static int mmc_select_hwpartp(struct blk_desc *desc, int hwpart)
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return 0;
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}
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int mmc_select_hwpart(int dev_num, int hwpart)
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{
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struct mmc *mmc = find_mmc_device(dev_num);
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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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#endif
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int mmc_hwpart_config(struct mmc *mmc,
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const struct mmc_hwpart_conf *conf,
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@ -1554,7 +1563,6 @@ int mmc_bind(struct udevice *dev, struct mmc *mmc, const struct mmc_config *cfg)
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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->if_type = IF_TYPE_MMC;
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bdesc->removable = 1;
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/* setup initial part type */
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@ -1623,6 +1631,7 @@ void mmc_destroy(struct mmc *mmc)
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}
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#endif
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#ifndef CONFIG_BLK
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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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@ -1638,6 +1647,7 @@ static int mmc_get_dev(int dev, struct blk_desc **descp)
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return 0;
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}
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#endif
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/* board-specific MMC power initializations. */
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__weak void board_mmc_power_init(void)
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@ -1729,7 +1739,11 @@ int mmc_init(struct mmc *mmc)
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{
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int err = 0;
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unsigned start;
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#ifdef CONFIG_DM_MMC
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struct mmc_uclass_priv *upriv = dev_get_uclass_priv(mmc->dev);
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upriv->mmc = mmc;
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#endif
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if (mmc->has_init)
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return 0;
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@ -1957,6 +1971,19 @@ int mmc_set_rst_n_function(struct mmc *mmc, u8 enable)
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}
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#endif
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#ifdef CONFIG_BLK
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static const struct blk_ops mmc_blk_ops = {
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.read = mmc_bread,
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.write = mmc_bwrite,
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.select_hwpart = mmc_select_hwpart,
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};
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U_BOOT_DRIVER(mmc_blk) = {
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.name = "mmc_blk",
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.id = UCLASS_BLK,
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.ops = &mmc_blk_ops,
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};
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#else
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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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@ -1964,3 +1991,4 @@ U_BOOT_LEGACY_BLK(mmc) = {
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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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#endif
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@ -25,8 +25,13 @@ void mmc_adapter_card_type_ident(void);
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unsigned long mmc_berase(struct blk_desc *block_dev, lbaint_t start,
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lbaint_t blkcnt);
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unsigned long mmc_bwrite(struct blk_desc *block_dev, lbaint_t start,
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lbaint_t blkcnt, const void *src);
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#ifdef CONFIG_BLK
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ulong mmc_bwrite(struct udevice *dev, lbaint_t start, lbaint_t blkcnt,
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const void *src);
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#else
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ulong mmc_bwrite(struct blk_desc *block_dev, lbaint_t start, lbaint_t blkcnt,
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const void *src);
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#endif
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#else /* CONFIG_SPL_BUILD */
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@ -9,6 +9,7 @@
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#include <config.h>
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#include <common.h>
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#include <dm.h>
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#include <part.h>
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#include <div64.h>
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#include <linux/math64.h>
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@ -172,9 +173,17 @@ static ulong mmc_write_blocks(struct mmc *mmc, lbaint_t start,
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return blkcnt;
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}
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#ifdef CONFIG_BLK
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ulong mmc_bwrite(struct udevice *dev, lbaint_t start, lbaint_t blkcnt,
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const void *src)
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#else
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ulong mmc_bwrite(struct blk_desc *block_dev, lbaint_t start, lbaint_t blkcnt,
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const void *src)
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#endif
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{
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#ifdef CONFIG_BLK
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struct blk_desc *block_dev = dev_get_uclass_platdata(dev);
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#endif
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int dev_num = block_dev->devnum;
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lbaint_t cur, blocks_todo = blkcnt;
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int err;
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@ -344,7 +344,9 @@ struct mmc_config {
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/* TODO struct mmc should be in mmc_private but it's hard to fix right now */
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struct mmc {
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#ifndef CONFIG_BLK
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struct list_head link;
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#endif
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const struct mmc_config *cfg; /* provided configuration */
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uint version;
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void *priv;
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@ -376,7 +378,9 @@ struct mmc {
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u64 capacity_gp[4];
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u64 enh_user_start;
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u64 enh_user_size;
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#ifndef CONFIG_BLK
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struct blk_desc block_dev;
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#endif
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char op_cond_pending; /* 1 if we are waiting on an op_cond command */
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char init_in_progress; /* 1 if we have done mmc_start_init() */
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char preinit; /* start init as early as possible */
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@ -73,23 +73,6 @@ typedef struct disk_partition {
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*/
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struct blk_desc *blk_get_dev(const char *ifname, int dev);
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/**
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* mmc_select_hwpart() - Select the MMC hardware partiion on an MMC device
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*
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* MMC devices can support partitioning at the hardware level. This is quite
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* separate from the normal idea of software-based partitions. MMC hardware
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* partitions must be explicitly selected. Once selected only the region of
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* the device covered by that partition is accessible.
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*
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* The MMC standard provides for two boot partitions (numbered 1 and 2),
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* rpmb (3), and up to 4 addition general-purpose partitions (4-7).
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*
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* @dev_num: Block device number (struct blk_desc->dev value)
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* @hwpart: Hardware partition number to select. 0 means the raw device,
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* 1 is the first partition, 2 is the second, etc.
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* @return 0 if OK, other value for an error
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*/
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int mmc_select_hwpart(int dev_num, int hwpart);
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struct blk_desc *mg_disk_get_dev(int dev);
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int host_get_dev_err(int dev, struct blk_desc **blk_devp);
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@ -167,7 +150,6 @@ extern const struct block_drvr block_drvr[];
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#else
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static inline struct blk_desc *blk_get_dev(const char *ifname, int dev)
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{ return NULL; }
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static inline int mmc_select_hwpart(int dev_num, int hwpart) { return -1; }
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static inline struct blk_desc *mg_disk_get_dev(int dev) { return NULL; }
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static inline int part_get_info(struct blk_desc *dev_desc, int part,
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