return device_probe(*devp);
}
-unsigned long blk_dread(struct blk_desc *block_dev, lbaint_t start,
- lbaint_t blkcnt, void *buffer)
+long blk_read(struct udevice *dev, lbaint_t start, lbaint_t blkcnt, void *buf)
{
- struct udevice *dev = block_dev->bdev;
+ struct blk_desc *desc = dev_get_uclass_plat(dev);
const struct blk_ops *ops = blk_get_ops(dev);
ulong blks_read;
if (!ops->read)
return -ENOSYS;
- if (blkcache_read(block_dev->uclass_id, block_dev->devnum,
- start, blkcnt, block_dev->blksz, buffer))
+ if (blkcache_read(desc->uclass_id, desc->devnum,
+ start, blkcnt, desc->blksz, buf))
return blkcnt;
- blks_read = ops->read(dev, start, blkcnt, buffer);
+ blks_read = ops->read(dev, start, blkcnt, buf);
if (blks_read == blkcnt)
- blkcache_fill(block_dev->uclass_id, block_dev->devnum,
- start, blkcnt, block_dev->blksz, buffer);
+ blkcache_fill(desc->uclass_id, desc->devnum, start, blkcnt,
+ desc->blksz, buf);
return blks_read;
}
-unsigned long blk_dwrite(struct blk_desc *block_dev, lbaint_t start,
- lbaint_t blkcnt, const void *buffer)
+long blk_write(struct udevice *dev, lbaint_t start, lbaint_t blkcnt,
+ const void *buf)
{
- struct udevice *dev = block_dev->bdev;
+ struct blk_desc *desc = dev_get_uclass_plat(dev);
const struct blk_ops *ops = blk_get_ops(dev);
if (!ops->write)
return -ENOSYS;
- blkcache_invalidate(block_dev->uclass_id, block_dev->devnum);
- return ops->write(dev, start, blkcnt, buffer);
+ blkcache_invalidate(desc->uclass_id, desc->devnum);
+
+ return ops->write(dev, start, blkcnt, buf);
}
-unsigned long blk_derase(struct blk_desc *block_dev, lbaint_t start,
- lbaint_t blkcnt)
+long blk_erase(struct udevice *dev, lbaint_t start, lbaint_t blkcnt)
{
- struct udevice *dev = block_dev->bdev;
+ struct blk_desc *desc = dev_get_uclass_plat(dev);
const struct blk_ops *ops = blk_get_ops(dev);
if (!ops->erase)
return -ENOSYS;
- blkcache_invalidate(block_dev->uclass_id, block_dev->devnum);
+ blkcache_invalidate(desc->uclass_id, desc->devnum);
+
return ops->erase(dev, start, blkcnt);
}
+ulong blk_dread(struct blk_desc *desc, lbaint_t start, lbaint_t blkcnt,
+ void *buffer)
+{
+ return blk_read(desc->bdev, start, blkcnt, buffer);
+}
+
+ulong blk_dwrite(struct blk_desc *desc, lbaint_t start, lbaint_t blkcnt,
+ const void *buffer)
+{
+ return blk_write(desc->bdev, start, blkcnt, buffer);
+}
+
+ulong blk_derase(struct blk_desc *desc, lbaint_t start, lbaint_t blkcnt)
+{
+ return blk_erase(desc->bdev, start, blkcnt);
+}
+
int blk_get_from_parent(struct udevice *parent, struct udevice **devp)
{
struct udevice *dev;
lbaint_t blkcnt);
/**
+ * blk_read() - Read from a block device
+ *
+ * @dev: Device to read from
+ * @start: Start block for the read
+ * @blkcnt: Number of blocks to read
+ * @buf: Place to put the data
+ * @return number of blocks read (which may be less than @blkcnt),
+ * or -ve on error. This never returns 0 unless @blkcnt is 0
+ */
+long blk_read(struct udevice *dev, lbaint_t start, lbaint_t blkcnt,
+ void *buffer);
+
+/**
+ * blk_write() - Write to a block device
+ *
+ * @dev: Device to write to
+ * @start: Start block for the write
+ * @blkcnt: Number of blocks to write
+ * @buf: Data to write
+ * @return number of blocks written (which may be less than @blkcnt),
+ * or -ve on error. This never returns 0 unless @blkcnt is 0
+ */
+long blk_write(struct udevice *dev, lbaint_t start, lbaint_t blkcnt,
+ const void *buffer);
+
+/**
+ * blk_erase() - Erase part of a block device
+ *
+ * @dev: Device to erase
+ * @start: Start block for the erase
+ * @blkcnt: Number of blocks to erase
+ * @return number of blocks erased (which may be less than @blkcnt),
+ * or -ve on error. This never returns 0 unless @blkcnt is 0
+ */
+long blk_erase(struct udevice *dev, lbaint_t start, lbaint_t blkcnt);
+
+/**
* blk_find_device() - Find a block device
*
* This function does not activate the device. The device will be returned
/**
* blk_get_by_device() - Get the block device descriptor for the given device
- * @dev: Instance of a storage device
+ * @dev: Instance of a storage device (the parent of the block device)
*
* Return: With block device descriptor on success , NULL if there is no such
* block device.
*/
static int dm_test_usb_flash(struct unit_test_state *uts)
{
- struct udevice *dev;
- struct blk_desc *dev_desc;
+ struct blk_desc *dev_desc, *chk;
+ struct udevice *dev, *blk;
char cmp[1024];
state_set_skip_delays(true);
ut_assertok(usb_init());
ut_assertok(uclass_get_device(UCLASS_MASS_STORAGE, 0, &dev));
ut_assertok(blk_get_device_by_str("usb", "0", &dev_desc));
+ chk = blk_get_by_device(dev);
+ ut_asserteq_ptr(chk, dev_desc);
+
+ ut_assertok(device_find_first_child_by_uclass(dev, UCLASS_BLK, &blk));
+ ut_asserteq_ptr(chk, blk_get_by_device(dev));
/* Read a few blocks and look for the string we expect */
ut_asserteq(512, dev_desc->blksz);
memset(cmp, '\0', sizeof(cmp));
- ut_asserteq(2, blk_dread(dev_desc, 0, 2, cmp));
+ ut_asserteq(2, blk_read(blk, 0, 2, cmp));
ut_assertok(strcmp(cmp, "this is a test"));
ut_assertok(usb_stop());