diff options
| author | Anastasiia Lukianenko <anastasiia_lukianenko@epam.com> | 2020-08-06 12:42:55 +0300 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2020-08-14 15:18:30 -0400 |
| commit | 722bc5b5d901eafb96e8530cc7cf3036bff398a4 (patch) | |
| tree | dd7518078a82e91b14944d9136147e688e064992 /cmd/pvblock.c | |
| parent | c850674ff74b1625c17a77a454acec0e9cc6ec36 (diff) | |
xen: pvblock: Add initial support for para-virtualized block driver
Add initial infrastructure for Xen para-virtualized block device.
This includes compile-time configuration and the skeleton for
the future driver implementation.
Add new class UCLASS_PVBLOCK which is going to be a parent for
virtual block devices.
Add new interface type IF_TYPE_PVBLOCK.
Implement basic driver setup by reading XenStore configuration.
Signed-off-by: Andrii Anisov <andrii_anisov@epam.com>
Signed-off-by: Anastasiia Lukianenko <anastasiia_lukianenko@epam.com>
Signed-off-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
Diffstat (limited to 'cmd/pvblock.c')
| -rw-r--r-- | cmd/pvblock.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/cmd/pvblock.c b/cmd/pvblock.c new file mode 100644 index 0000000000..4e99b06122 --- /dev/null +++ b/cmd/pvblock.c @@ -0,0 +1,30 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * (C) Copyright 2020 EPAM Systems Inc. + * + * XEN para-virtualized block device support + */ + +#include <blk.h> +#include <common.h> +#include <command.h> + +/* Current I/O Device */ +static int pvblock_curr_device; + +int do_pvblock(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) +{ + return blk_common_cmd(argc, argv, IF_TYPE_PVBLOCK, + &pvblock_curr_device); +} + +U_BOOT_CMD(pvblock, 5, 1, do_pvblock, + "Xen para-virtualized block device", + "info - show available block devices\n" + "pvblock device [dev] - show or set current device\n" + "pvblock part [dev] - print partition table of one or all devices\n" + "pvblock read addr blk# cnt\n" + "pvblock write addr blk# cnt - read/write `cnt'" + " blocks starting at block `blk#'\n" + " to/from memory address `addr'"); + |