diff options
| -rw-r--r-- | drivers/block/blk-uclass.c | 51 | ||||
| -rw-r--r-- | include/blk.h | 39 | ||||
| -rw-r--r-- | test/dm/usb.c | 11 |
3 files changed, 80 insertions, 21 deletions
diff --git a/drivers/block/blk-uclass.c b/drivers/block/blk-uclass.c index bcc14a6..e82789f 100644 --- a/drivers/block/blk-uclass.c +++ b/drivers/block/blk-uclass.c @@ -444,53 +444,70 @@ int blk_get_device(int uclass_id, int devnum, struct udevice **devp) 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; diff --git a/include/blk.h b/include/blk.h index d3ab9a1..e854166 100644 --- a/include/blk.h +++ b/include/blk.h @@ -274,6 +274,43 @@ unsigned long blk_derase(struct blk_desc *block_dev, lbaint_t start, 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 @@ -428,7 +465,7 @@ const char *blk_get_devtype(struct udevice *dev); /** * 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. diff --git a/test/dm/usb.c b/test/dm/usb.c index 5d6ceef..445b21a 100644 --- a/test/dm/usb.c +++ b/test/dm/usb.c @@ -43,19 +43,24 @@ DM_TEST(dm_test_usb_base, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT); */ 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()); |