Commit 6457271f authored by Ofir Bitton's avatar Ofir Bitton Committed by Oded Gabbay
Browse files

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: default avatarOfir Bitton <obitton@habana.ai>
Reviewed-by: default avatarOded Gabbay <ogabbay@kernel.org>
Signed-off-by: default avatarOded Gabbay <ogabbay@kernel.org>
parent 107a5bcc

Documentation/ABI/testing/sysfs-driver-habanalabs

+6 −0
Original line number Diff line number Diff line
@@ -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<n>/security_enabled

Date:           Oct 2022

KernelVersion:  6.1

Contact:        obitton@habana.ai

Description:    Displays the device's security status



What:           /sys/class/habanalabs/hl<n>/soft_reset

Date:           Jan 2019

KernelVersion:  5.1

drivers/misc/habanalabs/common/sysfs.c

+10 −0
Original line number Diff line number Diff line
@@ -375,6 +375,14 @@ static ssize_t eeprom_read_handler(struct file *filp, struct kobject *kobj, 
	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,

};