summaryrefslogtreecommitdiff
path: root/Documentation/ABI
diff options
context:
space:
mode:
authorWu Hao <hao.wu@intel.com>2018-06-30 03:53:12 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-07-15 14:55:44 +0300
commit41a8b2c56470b7e4e3e2db93324d50bbbf60cdc4 (patch)
tree4e3314c007e056d39805aa8e49cd42678ac9926a /Documentation/ABI
parent99a560bde313892f87ca81db568a829d3d205882 (diff)
downloadlinux-41a8b2c56470b7e4e3e2db93324d50bbbf60cdc4.tar.xz
fpga: region: add compat_id support
This patch introduces a compat_id pointer member and sysfs interface for each fpga region, similar as compat_id for fpga manager, it allows applications to read the per region compat_id for compatibility checking before other actions on this fpga-region (e.g. PR). Signed-off-by: Wu Hao <hao.wu@intel.com> Acked-by: Alan Tull <atull@kernel.org> Acked-by: Moritz Fischer <mdf@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation/ABI')
-rw-r--r--Documentation/ABI/testing/sysfs-class-fpga-region9
1 files changed, 9 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-class-fpga-region b/Documentation/ABI/testing/sysfs-class-fpga-region
new file mode 100644
index 000000000000..bc7ec644acc9
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-class-fpga-region
@@ -0,0 +1,9 @@
+What: /sys/class/fpga_region/<region>/compat_id
+Date: June 2018
+KernelVersion: 4.19
+Contact: Wu Hao <hao.wu@intel.com>
+Description: FPGA region id for compatibility check, e.g. compatibility
+ of the FPGA reconfiguration hardware and image. This value
+ is defined or calculated by the layer that is creating the
+ FPGA region. This interface returns the compat_id value or
+ just error code -ENOENT in case compat_id is not used.