ec2f993b84
Update some patch for uadk from mainline. To get more information, please visit the homepage: https://github.comp/Linaro/uadk Signed-off-by: Yang Shen <shenyang39@huawei.com>
66 lines
1.6 KiB
Diff
66 lines
1.6 KiB
Diff
From 45d65ffcfea660dded788d6819399833e017fd9f Mon Sep 17 00:00:00 2001
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From: Kai Ye <yekai13@huawei.com>
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Date: Wed, 22 Jun 2022 10:26:31 +0800
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Subject: [PATCH 141/183] uadk: add device isolation interface
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Users need to check whether the device is isolated before using
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the device. So add an isolation interface.
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Signed-off-by: Kai Ye <yekai13@huawei.com>
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---
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include/wd.h | 8 ++++++++
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wd.c | 18 ++++++++++++++++++
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2 files changed, 26 insertions(+)
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diff --git a/include/wd.h b/include/wd.h
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index 8c45522..b8044a4 100644
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--- a/include/wd.h
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+++ b/include/wd.h
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@@ -293,6 +293,14 @@ int wd_ctx_wait(handle_t h_ctx, __u16 ms);
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*/
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int wd_is_sva(handle_t h_ctx);
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+/**
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+ * wd_is_isolate() - Check if the device has been isolated.
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+ * @dev: Indicate one device.
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+ *
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+ * Return 1 if isolated, 0 for not isolated, less than 0 otherwise.
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+ */
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+int wd_is_isolate(struct uacce_dev *dev);
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+
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/**
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* wd_get_accel_name() - Get device name or driver name.
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* @dev_path: The path of device. e.g. /dev/hisi_zip-0.
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diff --git a/wd.c b/wd.c
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index 2dbb2ab..9715e10 100644
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--- a/wd.c
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+++ b/wd.c
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@@ -186,6 +186,24 @@ static int access_attr(const char *dev_root, const char *attr, int mode)
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return access(attr_file, mode);
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}
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+int wd_is_isolate(struct uacce_dev *dev)
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+{
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+ int value = 0;
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+ int ret;
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+
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+ if (!dev || !dev->dev_root)
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+ return -WD_EINVAL;
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+
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+ ret = access_attr(dev->dev_root, "isolate", F_OK);
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+ if (!ret) {
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+ ret = get_int_attr(dev, "isolate", &value);
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+ if (ret < 0)
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+ return ret;
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+ }
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+
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+ return value == 1 ? 1 : 0;
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+}
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+
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static int get_dev_info(struct uacce_dev *dev)
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{
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int value = 0;
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--
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2.27.0
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