1、Add the uacce hardware error isolation interface.
2、Add related implementation in ACC driver to support uacce interface.
e.g. Defining the isolation strategy for ACC by uacce sysfs node, if
the AER error frequency exceeds the value of setting for a certain
period of time. The device will not be available in user space. The
VF device use the PF device isolation strategy. as well as the
isolation strategy should not be set during device use.
changes v1->v2:
1、deleted dev_to_uacce api.
2、add vfs node doc.
3、move uacce->ref to driver.
changes v2->v3:
1、deleted some redundant code.
2、use qm state instead of reference count.
3、add null pointer check.
4、isolate_strategy_read() instead of a copy.
Kai Ye (3):
uacce: supports device isolation feature
Documentation: add a isolation strategy sysfs node for uacce
crypto: hisilicon/qm - defining the device isolation strategy
Documentation/ABI/testing/sysfs-driver-uacce | 18 ++
drivers/crypto/hisilicon/qm.c | 178 +++++++++++++++++--
drivers/misc/uacce/uacce.c | 41 +++++
include/linux/hisi_acc_qm.h | 9 +
include/linux/uacce.h | 11 ++
5 files changed, 245 insertions(+), 12 deletions(-)
--
2.33.0
Update documentation describing sysfs node that could help to
configure isolation method command for users in th user space.
Signed-off-by: Kai Ye <[email protected]>
---
Documentation/ABI/testing/sysfs-driver-uacce | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
diff --git a/Documentation/ABI/testing/sysfs-driver-uacce b/Documentation/ABI/testing/sysfs-driver-uacce
index 08f2591138af..8784efa96e01 100644
--- a/Documentation/ABI/testing/sysfs-driver-uacce
+++ b/Documentation/ABI/testing/sysfs-driver-uacce
@@ -19,6 +19,24 @@ Contact: [email protected]
Description: Available instances left of the device
Return -ENODEV if uacce_ops get_available_instances is not provided
+What: /sys/class/uacce/<dev_name>/isolate_strategy
+Date: Jun 2022
+KernelVersion: 5.20
+Contact: [email protected]
+Description: A sysfs node that used to configures the hardware error
+ isolation method command. The command can be parsed
+ in correct driver. e.g. If the device slot reset frequency
+ exceeds the preset value in a time window, the device will be
+ isolated.
+
+What: /sys/class/uacce/<dev_name>/isolate
+Date: Jun 2022
+KernelVersion: 5.20
+Contact: [email protected]
+Description: A sysfs node that show the device isolated state. The value 0
+ means that the device is working. The value 1 means that the
+ device has been isolated.
+
What: /sys/class/uacce/<dev_name>/algorithms
Date: Feb 2020
KernelVersion: 5.7
--
2.33.0