habanalabs: display card name as sensors header

To allow the user to use a custom file for the HWMON lm-sensors library
per card type, the driver needs to register the HWMON sensors with the
specific card type name.

The card name is supplied by the F/W running on the device. If the F/W is
old and doesn't supply a card name, a default card name is displayed as
the sensors group name.
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Reviewed-by: Omer Shpigelman <oshpigelman@habana.ai>

drivers/misc/habanalabs/goya/goya.c

@@ -4961,6 +4961,10 @@ int goya_armcp_info_get(struct hl_device *hdev)
 		prop->dram_end_address = prop->dram_base_address + dram_size;
 	}
 
+	if (!strlen(prop->armcp_info.card_name))
+		strncpy(prop->armcp_info.card_name, GOYA_DEFAULT_CARD_NAME,
+				CARD_NAME_MAX_LEN);
+
 	return 0;
 }
 

drivers/misc/habanalabs/goya/goyaP.h

@@ -55,6 +55,8 @@
 
 #define DRAM_PHYS_DEFAULT_SIZE		0x100000000ull	/* 4GB */
 
+#define GOYA_DEFAULT_CARD_NAME		"HL1000"
+
 /* DRAM Memory Map */
 
 #define CPU_FW_IMAGE_SIZE		0x10000000	/* 256MB */

drivers/misc/habanalabs/hwmon.c

@@ -421,6 +421,7 @@ void hl_set_pwm_info(struct hl_device *hdev, int sensor_index, u32 attr,
 int hl_hwmon_init(struct hl_device *hdev)
 {
 	struct device *dev = hdev->pdev ? &hdev->pdev->dev : hdev->dev;
+	struct asic_fixed_properties *prop = &hdev->asic_prop;
 	int rc;
 
 	if ((hdev->hwmon_initialized) || !(hdev->fw_loading))
@@ -430,7 +431,8 @@ int hl_hwmon_init(struct hl_device *hdev)
 		hdev->hl_chip_info->ops = &hl_hwmon_ops;
 
 		hdev->hwmon_dev = hwmon_device_register_with_info(dev,
-				"habanalabs", hdev, hdev->hl_chip_info, NULL);
+					prop->armcp_info.card_name, hdev,
+					hdev->hl_chip_info, NULL);
 		if (IS_ERR(hdev->hwmon_dev)) {
 			rc = PTR_ERR(hdev->hwmon_dev);
 			dev_err(hdev->dev,

drivers/misc/habanalabs/include/armcp_if.h

 /* SPDX-License-Identifier: GPL-2.0
  *
- * Copyright 2016-2018 HabanaLabs, Ltd.
+ * Copyright 2016-2019 HabanaLabs, Ltd.
  * All Rights Reserved.
  *
  */
@@ -310,6 +310,7 @@ struct eq_generic_event {
  * ArmCP info
  */
 
+#define CARD_NAME_MAX_LEN		16
 #define VERSION_MAX_LEN			128
 #define ARMCP_MAX_SENSORS		128
 
@@ -318,6 +319,19 @@ struct armcp_sensor {
 	__le32 flags;
 };
 
+/**
+ * struct armcp_info - host driver's necessary info from ArmCP.
+ * @sensors: available sensors description.
+ * @kernel_version: ArmCP linux kernel version.
+ * @reserved: reserved field.
+ * @cpld_version: CPLD programmed F/W version.
+ * @infineon_version: Infineon main DC-DC version.
+ * @fuse_version: silicon production FUSE information.
+ * @thermal_version: thermald S/W version.
+ * @armcp_version: ArmCP S/W version.
+ * @dram_size: available DRAM size.
+ * @card_name: card name that will be displayed in HWMON subsystem on the host
+ */
 struct armcp_info {
 	struct armcp_sensor sensors[ARMCP_MAX_SENSORS];
 	__u8 kernel_version[VERSION_MAX_LEN];
@@ -328,6 +342,7 @@ struct armcp_info {
 	__u8 thermal_version[VERSION_MAX_LEN];
 	__u8 armcp_version[VERSION_MAX_LEN];
 	__le64 dram_size;
+	char card_name[CARD_NAME_MAX_LEN];
 };
 
 #endif /* ARMCP_IF_H */