From 6457271f64a2b6674b11aebb2888427eb4558c22 Mon Sep 17 00:00:00 2001 From: Ofir Bitton Date: Wed, 3 Aug 2022 17:16:56 +0300 Subject: [PATCH] habanalabs: expose device security status through sysfs In order for the user to know if he is running on a secured device or not, a sysfs node is added. Signed-off-by: Ofir Bitton Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay --- Documentation/ABI/testing/sysfs-driver-habanalabs | 6 ++++++ drivers/misc/habanalabs/common/sysfs.c | 10 ++++++++++ 2 files changed, 16 insertions(+) diff --git a/Documentation/ABI/testing/sysfs-driver-habanalabs b/Documentation/ABI/testing/sysfs-driver-habanalabs index 96646fb2e7a1..6963640a2615 100644 --- a/Documentation/ABI/testing/sysfs-driver-habanalabs +++ b/Documentation/ABI/testing/sysfs-driver-habanalabs @@ -176,6 +176,12 @@ KernelVersion: 5.1 Contact: ogabbay@kernel.org Description: Version of the device's preboot F/W code +What: /sys/class/habanalabs/hl/security_enabled +Date: Oct 2022 +KernelVersion: 6.1 +Contact: obitton@habana.ai +Description: Displays the device's security status + What: /sys/class/habanalabs/hl/soft_reset Date: Jan 2019 KernelVersion: 5.1 diff --git a/drivers/misc/habanalabs/common/sysfs.c b/drivers/misc/habanalabs/common/sysfs.c index 6c5271f01160..36e9814139d1 100644 --- a/drivers/misc/habanalabs/common/sysfs.c +++ b/drivers/misc/habanalabs/common/sysfs.c @@ -375,6 +375,14 @@ out: return max_size; } +static ssize_t security_enabled_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct hl_device *hdev = dev_get_drvdata(dev); + + return sprintf(buf, "%d\n", hdev->asic_prop.fw_security_enabled); +} + static DEVICE_ATTR_RO(armcp_kernel_ver); static DEVICE_ATTR_RO(armcp_ver); static DEVICE_ATTR_RO(cpld_ver); @@ -393,6 +401,7 @@ static DEVICE_ATTR_RO(status); static DEVICE_ATTR_RO(thermal_ver); static DEVICE_ATTR_RO(uboot_ver); static DEVICE_ATTR_RO(fw_os_ver); +static DEVICE_ATTR_RO(security_enabled); static struct bin_attribute bin_attr_eeprom = { .attr = {.name = "eeprom", .mode = (0444)}, @@ -417,6 +426,7 @@ static struct attribute *hl_dev_attrs[] = { &dev_attr_thermal_ver.attr, &dev_attr_uboot_ver.attr, &dev_attr_fw_os_ver.attr, + &dev_attr_security_enabled.attr, NULL, }; -- 2.34.1