habanalabs: sysfs support for fw os version

Adds new sysfs entry to display firmware os version
/sys/class/habanalabs/hl<n>/fw_os_ver

Signed-off-by: Rajaravi Krishna Katta <rkatta@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>

diff --git a/Documentation/ABI/testing/sysfs-driver-habanalabs b/Documentation/ABI/testing/sysfs-driver-habanalabs
index c16a573..96646fb 100644 (file)
--- a/Documentation/ABI/testing/sysfs-driver-habanalabs
+++ b/Documentation/ABI/testing/sysfs-driver-habanalabs
@@ -69,6 +69,12 @@ KernelVersion:  5.1
 Contact:        ogabbay@kernel.org
 Description:    Displays the device's version from the eFuse
 
+What:           /sys/class/habanalabs/hl<n>/fw_os_ver
+Date:           Dec 2021
+KernelVersion:  5.18
+Contact:        ogabbay@kernel.org
+Description:    Version of the firmware OS running on the device's CPU
+
 What:           /sys/class/habanalabs/hl<n>/hard_reset
 Date:           Jan 2019
 KernelVersion:  5.1

diff --git a/drivers/misc/habanalabs/common/sysfs.c b/drivers/misc/habanalabs/common/sysfs.c
index 65b132f..3f220dd 100644 (file)
--- a/drivers/misc/habanalabs/common/sysfs.c
+++ b/drivers/misc/habanalabs/common/sysfs.c
@@ -156,6 +156,14 @@ static ssize_t thermal_ver_show(struct device *dev,
        return sprintf(buf, "%s", hdev->asic_prop.cpucp_info.thermal_version);
 }
 
+static ssize_t fw_os_ver_show(struct device *dev,
+                               struct device_attribute *attr, char *buf)
+{
+       struct hl_device *hdev = dev_get_drvdata(dev);
+
+       return sprintf(buf, "%s", hdev->asic_prop.cpucp_info.fw_os_version);
+}
+
 static ssize_t preboot_btl_ver_show(struct device *dev,
                                struct device_attribute *attr, char *buf)
 {
@@ -370,6 +378,7 @@ static DEVICE_ATTR_RO(soft_reset_cnt);
 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 struct bin_attribute bin_attr_eeprom = {
        .attr = {.name = "eeprom", .mode = (0444)},
@@ -393,6 +402,7 @@ static struct attribute *hl_dev_attrs[] = {
        &dev_attr_status.attr,
        &dev_attr_thermal_ver.attr,
        &dev_attr_uboot_ver.attr,
+       &dev_attr_fw_os_ver.attr,
        NULL,
 };
 

diff --git a/drivers/misc/habanalabs/include/common/cpucp_if.h b/drivers/misc/habanalabs/include/common/cpucp_if.h
index 737c39f..f00db22 100644 (file)
--- a/drivers/misc/habanalabs/include/common/cpucp_if.h
+++ b/drivers/misc/habanalabs/include/common/cpucp_if.h
@@ -780,6 +780,7 @@ struct cpucp_security_info {
  *                     (0 = functional 1 = binned)
  * @xbar_binning_mask: Xbar binning mask, 1 bit per Xbar instance
  *                     (0 = functional 1 = binned)
+ * @fw_os_version: Firmware OS Version
  */
 struct cpucp_info {
        struct cpucp_sensor sensors[CPUCP_MAX_SENSORS];
@@ -807,6 +808,7 @@ struct cpucp_info {
        __le32 reserved6;
        __u8 pll_map[PLL_MAP_LEN];
        __le64 mme_binning_mask;
+       __u8 fw_os_version[VERSION_MAX_LEN];
 };
 
 struct cpucp_mac_addr {