Commit graph

4 commits

Author SHA1 Message Date
Tom Rini
83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00
Bin Meng
18aa5a4134 nvme: Get rid of the global variable nvme_info
At present the NVMe uclass driver uses a global variable nvme_info
to store global information like namespace id, and NVMe controller
driver's priv struct has a blk_dev_start that is used to calculate
the namespace id based on the global information from nvme_info.

This is not a good design in the DM world and can be replaced with
the following changes:

- Encode the namespace id in the NVMe block device name during
  the NVMe uclass post probe
- Extract the namespace id from the device name during the NVMe
  block device probe
- Let BLK uclass calculate the devnum for us by passing -1 to
  blk_create_devicef() as the devnum

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
2017-08-28 07:17:14 -04:00
Bin Meng
d5b7ee9c6e nvme: Use blk_create_devicef() API
The codes in nvme_uclass_post_probe() can be replaced to call the
blk_create_devicef() API directly.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
2017-08-28 07:17:14 -04:00
Zhikang Zhang
982388eaa9 nvme: Add NVM Express driver support
NVM Express (NVMe) is a register level interface that allows host
software to communicate with a non-volatile memory subsystem. This
interface is optimized for enterprise and client solid state drives,
typically attached to the PCI express interface.

This adds a U-Boot driver support of devices that follow the NVMe
standard [1] and supports basic read/write operations.

Tested with a 400GB Intel SSD 750 series NVMe card with controller
id 8086:0953.

[1] http://www.nvmexpress.org/resources/specifications/

Signed-off-by: Zhikang Zhang <zhikang.zhang@nxp.com>
Signed-off-by: Wenbin Song <wenbin.song@nxp.com>
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2017-08-13 15:17:31 -04:00