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efi_loader: disk: use udevice instead of blk_desc

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In most of all cases, we can avoid using blk_desc which is expected
to be private to udevice(UCLASS_BLK), that is, the data should not
be manipulated outside the device driver unless really needed.

Now efi_disk's internally use dev_read/write() interfaces
if CONFIG_PARTITIONS is enabled.

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
AKASHI Takahiro 2022-04-19 10:05:17 +09:00 committed by Heinrich Schuchardt
parent 59da9d4782
commit d97e98c887
1 changed files with 16 additions and 6 deletions
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22
lib/efi_loader/efi_disk.c
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@ -36,7 +36,7 @@ const efi_guid_t efi_system_partition_guid = PARTITION_SYSTEM_GUID;
* @part: partition
* @volume: simple file system protocol of the partition
* @offset: offset into disk for simple partition
* @desc: internal block device descriptor
* @dev: associated DM device
*/
struct efi_disk_obj {
struct efi_object header;
@ -48,7 +48,7 @@ struct efi_disk_obj {
unsigned int part;
struct efi_simple_file_system_protocol *volume;
lbaint_t offset;
struct blk_desc *desc;
struct udevice *dev; /* TODO: move it to efi_object */
};
/**
@ -83,14 +83,12 @@ static efi_status_t efi_disk_rw_blocks(struct efi_block_io *this,
void *buffer, enum efi_disk_direction direction)
{
struct efi_disk_obj *diskobj;
struct blk_desc *desc;
int blksz;
int blocks;
unsigned long n;
diskobj = container_of(this, struct efi_disk_obj, ops);
desc = (struct blk_desc *) diskobj->desc;
blksz = desc->blksz;
blksz = diskobj->media.block_size;
blocks = buffer_size / blksz;
lba += diskobj->offset;
@ -101,10 +99,21 @@ static efi_status_t efi_disk_rw_blocks(struct efi_block_io *this,
if (buffer_size & (blksz - 1))
return EFI_BAD_BUFFER_SIZE;
#if CONFIG_IS_ENABLED(PARTITIONS)
if (direction == EFI_DISK_READ)
n = dev_read(diskobj->dev, lba, blocks, buffer);
else
n = dev_write(diskobj->dev, lba, blocks, buffer);
#else
/* dev is always a block device (UCLASS_BLK) */
struct blk_desc *desc;
desc = dev_get_uclass_plat(diskobj->dev);
if (direction == EFI_DISK_READ)
n = blk_dread(desc, lba, blocks, buffer);
else
n = blk_dwrite(desc, lba, blocks, buffer);
#endif
/* We don't do interrupts, so check for timers cooperatively */
efi_timer_check();
@ -446,7 +455,6 @@ static efi_status_t efi_disk_add_dev(
diskobj->ops = block_io_disk_template;
diskobj->ifname = if_typename;
diskobj->dev_index = dev_index;
diskobj->desc = desc;
/* Fill in EFI IO Media info (for read/write callbacks) */
diskobj->media.removable_media = desc->removable;
@ -522,6 +530,7 @@ static int efi_disk_create_raw(struct udevice *dev)
return -1;
}
disk->dev = dev;
if (dev_tag_set_ptr(dev, DM_TAG_EFI, &disk->header)) {
efi_free_pool(disk->dp);
efi_delete_handle(&disk->header);
@ -578,6 +587,7 @@ static int efi_disk_create_part(struct udevice *dev)
log_err("Adding partition for %s failed\n", dev->name);
return -1;
}
disk->dev = dev;
if (dev_tag_set_ptr(dev, DM_TAG_EFI, &disk->header)) {
efi_free_pool(disk->dp);
efi_delete_handle(&disk->header);