drivers/misc/habanalabs/common/sysfs.c - linux - Git at Google

 // SPDX-License-Identifier: GPL-2.0

 /*
  * Copyright 2016-2019 HabanaLabs, Ltd.
  * All Rights Reserved.
  */

 #include "habanalabs.h"

 #include <linux/pci.h>

 long hl_get_frequency(struct hl_device *hdev, u32 pll_index, bool curr)
 {
 	struct cpucp_packet pkt;
 	u32 used_pll_idx;
 	u64 result;
 	int rc;

 	rc = get_used_pll_index(hdev, pll_index, &used_pll_idx);
 	if (rc)
 		return rc;

 	memset(&pkt, 0, sizeof(pkt));

 	if (curr)
 		pkt.ctl = cpu_to_le32(CPUCP_PACKET_FREQUENCY_CURR_GET <<
 						CPUCP_PKT_CTL_OPCODE_SHIFT);
 	else
 		pkt.ctl = cpu_to_le32(CPUCP_PACKET_FREQUENCY_GET <<
 						CPUCP_PKT_CTL_OPCODE_SHIFT);
 	pkt.pll_index = cpu_to_le32((u32)used_pll_idx);

 	rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt),
 						0, &result);

 	if (rc) {
 		dev_err(hdev->dev,
 			"Failed to get frequency of PLL %d, error %d\n",
 			used_pll_idx, rc);
 		return rc;
 	}

 	return (long) result;
 }

 void hl_set_frequency(struct hl_device *hdev, u32 pll_index, u64 freq)
 {
 	struct cpucp_packet pkt;
 	u32 used_pll_idx;
 	int rc;

 	rc = get_used_pll_index(hdev, pll_index, &used_pll_idx);
 	if (rc)
 		return;

 	memset(&pkt, 0, sizeof(pkt));

 	pkt.ctl = cpu_to_le32(CPUCP_PACKET_FREQUENCY_SET <<
 					CPUCP_PKT_CTL_OPCODE_SHIFT);
 	pkt.pll_index = cpu_to_le32((u32)used_pll_idx);
 	pkt.value = cpu_to_le64(freq);

 	rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt),
 						0, NULL);

 	if (rc)
 		dev_err(hdev->dev,
 			"Failed to set frequency to PLL %d, error %d\n",
 			used_pll_idx, rc);
 }

 u64 hl_get_max_power(struct hl_device *hdev)
 {
 	struct cpucp_packet pkt;
 	u64 result;
 	int rc;

 	memset(&pkt, 0, sizeof(pkt));

 	pkt.ctl = cpu_to_le32(CPUCP_PACKET_MAX_POWER_GET <<
 				CPUCP_PKT_CTL_OPCODE_SHIFT);

 	rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt),
 						0, &result);

 	if (rc) {
 		dev_err(hdev->dev, "Failed to get max power, error %d\n", rc);
 		return (u64) rc;
 	}

 	return result;
 }

 void hl_set_max_power(struct hl_device *hdev)
 {
 	struct cpucp_packet pkt;
 	int rc;

 	memset(&pkt, 0, sizeof(pkt));

 	pkt.ctl = cpu_to_le32(CPUCP_PACKET_MAX_POWER_SET <<
 				CPUCP_PKT_CTL_OPCODE_SHIFT);
 	pkt.value = cpu_to_le64(hdev->max_power);

 	rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt),
 						0, NULL);

 	if (rc)
 		dev_err(hdev->dev, "Failed to set max power, error %d\n", rc);
 }

 static ssize_t uboot_ver_show(struct device *dev, struct device_attribute *attr,
 				char *buf)
 {
 	struct hl_device *hdev = dev_get_drvdata(dev);

 	return sprintf(buf, "%s\n", hdev->asic_prop.uboot_ver);
 }

 static ssize_t armcp_kernel_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.kernel_version);
 }

 static ssize_t armcp_ver_show(struct device *dev, struct device_attribute *attr,
 				char *buf)
 {
 	struct hl_device *hdev = dev_get_drvdata(dev);

 	return sprintf(buf, "%s\n", hdev->asic_prop.cpucp_info.cpucp_version);
 }

 static ssize_t cpld_ver_show(struct device *dev, struct device_attribute *attr,
 				char *buf)
 {
 	struct hl_device *hdev = dev_get_drvdata(dev);

 	return sprintf(buf, "0x%08x\n",
 			hdev->asic_prop.cpucp_info.cpld_version);
 }

 static ssize_t cpucp_kernel_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.kernel_version);
 }

 static ssize_t cpucp_ver_show(struct device *dev, struct device_attribute *attr,
 				char *buf)
 {
 	struct hl_device *hdev = dev_get_drvdata(dev);

 	return sprintf(buf, "%s\n", hdev->asic_prop.cpucp_info.cpucp_version);
 }

 static ssize_t infineon_ver_show(struct device *dev,
 				struct device_attribute *attr, char *buf)
 {
 	struct hl_device *hdev = dev_get_drvdata(dev);

 	return sprintf(buf, "0x%04x\n",
 			hdev->asic_prop.cpucp_info.infineon_version);
 }

 static ssize_t fuse_ver_show(struct device *dev, struct device_attribute *attr,
 				char *buf)
 {
 	struct hl_device *hdev = dev_get_drvdata(dev);

 	return sprintf(buf, "%s\n", hdev->asic_prop.cpucp_info.fuse_version);
 }

 static ssize_t thermal_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.thermal_version);
 }

 static ssize_t preboot_btl_ver_show(struct device *dev,
 				struct device_attribute *attr, char *buf)
 {
 	struct hl_device *hdev = dev_get_drvdata(dev);

 	return sprintf(buf, "%s\n", hdev->asic_prop.preboot_ver);
 }

 static ssize_t soft_reset_store(struct device *dev,
 				struct device_attribute *attr, const char *buf,
 				size_t count)
 {
 	struct hl_device *hdev = dev_get_drvdata(dev);
 	long value;
 	int rc;

 	rc = kstrtoul(buf, 0, &value);

 	if (rc) {
 		count = -EINVAL;
 		goto out;
 	}

 	if (!hdev->allow_external_soft_reset) {
 		dev_err(hdev->dev, "Device does not support soft-reset\n");
 		goto out;
 	}

 	dev_warn(hdev->dev, "Soft-Reset requested through sysfs\n");

 	hl_device_reset(hdev, 0);

 out:
 	return count;
 }

 static ssize_t hard_reset_store(struct device *dev,
 				struct device_attribute *attr,
 				const char *buf, size_t count)
 {
 	struct hl_device *hdev = dev_get_drvdata(dev);
 	long value;
 	int rc;

 	rc = kstrtoul(buf, 0, &value);

 	if (rc) {
 		count = -EINVAL;
 		goto out;
 	}

 	dev_warn(hdev->dev, "Hard-Reset requested through sysfs\n");

 	hl_device_reset(hdev, HL_RESET_HARD);

 out:
 	return count;
 }

 static ssize_t device_type_show(struct device *dev,
 		struct device_attribute *attr, char *buf)
 {
 	struct hl_device *hdev = dev_get_drvdata(dev);
 	char *str;

 	switch (hdev->asic_type) {
 	case ASIC_GOYA:
 		str = "GOYA";
 		break;
 	case ASIC_GAUDI:
 		str = "GAUDI";
 		break;
 	case ASIC_GAUDI_SEC:
 		str = "GAUDI SEC";
 		break;
 	default:
 		dev_err(hdev->dev, "Unrecognized ASIC type %d\n",
 				hdev->asic_type);
 		return -EINVAL;
 	}

 	return sprintf(buf, "%s\n", str);
 }

 static ssize_t pci_addr_show(struct device *dev, struct device_attribute *attr,
 				char *buf)
 {
 	struct hl_device *hdev = dev_get_drvdata(dev);

 	return sprintf(buf, "%04x:%02x:%02x.%x\n",
 			pci_domain_nr(hdev->pdev->bus),
 			hdev->pdev->bus->number,
 			PCI_SLOT(hdev->pdev->devfn),
 			PCI_FUNC(hdev->pdev->devfn));
 }

 static ssize_t status_show(struct device *dev, struct device_attribute *attr,
 				char *buf)
 {
 	struct hl_device *hdev = dev_get_drvdata(dev);
 	char str[HL_STR_MAX];

 	strscpy(str, hdev->status[hl_device_status(hdev)], HL_STR_MAX);

 	/* use uppercase for backward compatibility */
 	str[0] = 'A' + (str[0] - 'a');

 	return sprintf(buf, "%s\n", str);
 }

 static ssize_t soft_reset_cnt_show(struct device *dev,
 		struct device_attribute *attr, char *buf)
 {
 	struct hl_device *hdev = dev_get_drvdata(dev);

 	return sprintf(buf, "%d\n", hdev->soft_reset_cnt);
 }

 static ssize_t hard_reset_cnt_show(struct device *dev,
 		struct device_attribute *attr, char *buf)
 {
 	struct hl_device *hdev = dev_get_drvdata(dev);

 	return sprintf(buf, "%d\n", hdev->hard_reset_cnt);
 }

 static ssize_t max_power_show(struct device *dev, struct device_attribute *attr,
 				char *buf)
 {
 	struct hl_device *hdev = dev_get_drvdata(dev);
 	long val;

 	if (!hl_device_operational(hdev, NULL))
 		return -ENODEV;

 	val = hl_get_max_power(hdev);

 	return sprintf(buf, "%lu\n", val);
 }

 static ssize_t max_power_store(struct device *dev,
 		struct device_attribute *attr, const char *buf, size_t count)
 {
 	struct hl_device *hdev = dev_get_drvdata(dev);
 	unsigned long value;
 	int rc;

 	if (!hl_device_operational(hdev, NULL)) {
 		count = -ENODEV;
 		goto out;
 	}

 	rc = kstrtoul(buf, 0, &value);

 	if (rc) {
 		count = -EINVAL;
 		goto out;
 	}

 	hdev->max_power = value;
 	hl_set_max_power(hdev);

 out:
 	return count;
 }

 static ssize_t eeprom_read_handler(struct file *filp, struct kobject *kobj,
 			struct bin_attribute *attr, char *buf, loff_t offset,
 			size_t max_size)
 {
 	struct device *dev = kobj_to_dev(kobj);
 	struct hl_device *hdev = dev_get_drvdata(dev);
 	char *data;
 	int rc;

 	if (!hl_device_operational(hdev, NULL))
 		return -ENODEV;

 	if (!max_size)
 		return -EINVAL;

 	data = kzalloc(max_size, GFP_KERNEL);
 	if (!data)
 		return -ENOMEM;

 	rc = hdev->asic_funcs->get_eeprom_data(hdev, data, max_size);
 	if (rc)
 		goto out;

 	memcpy(buf, data, max_size);

 out:
 	kfree(data);

 	return max_size;
 }

 static DEVICE_ATTR_RO(armcp_kernel_ver);
 static DEVICE_ATTR_RO(armcp_ver);
 static DEVICE_ATTR_RO(cpld_ver);
 static DEVICE_ATTR_RO(cpucp_kernel_ver);
 static DEVICE_ATTR_RO(cpucp_ver);
 static DEVICE_ATTR_RO(device_type);
 static DEVICE_ATTR_RO(fuse_ver);
 static DEVICE_ATTR_WO(hard_reset);
 static DEVICE_ATTR_RO(hard_reset_cnt);
 static DEVICE_ATTR_RO(infineon_ver);
 static DEVICE_ATTR_RW(max_power);
 static DEVICE_ATTR_RO(pci_addr);
 static DEVICE_ATTR_RO(preboot_btl_ver);
 static DEVICE_ATTR_WO(soft_reset);
 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 struct bin_attribute bin_attr_eeprom = {
 	.attr = {.name = "eeprom", .mode = (0444)},
 	.size = PAGE_SIZE,
 	.read = eeprom_read_handler
 };

 static struct attribute *hl_dev_attrs[] = {
 	&dev_attr_armcp_kernel_ver.attr,
 	&dev_attr_armcp_ver.attr,
 	&dev_attr_cpld_ver.attr,
 	&dev_attr_cpucp_kernel_ver.attr,
 	&dev_attr_cpucp_ver.attr,
 	&dev_attr_device_type.attr,
 	&dev_attr_fuse_ver.attr,
 	&dev_attr_hard_reset.attr,
 	&dev_attr_hard_reset_cnt.attr,
 	&dev_attr_infineon_ver.attr,
 	&dev_attr_max_power.attr,
 	&dev_attr_pci_addr.attr,
 	&dev_attr_preboot_btl_ver.attr,
 	&dev_attr_soft_reset.attr,
 	&dev_attr_soft_reset_cnt.attr,
 	&dev_attr_status.attr,
 	&dev_attr_thermal_ver.attr,
 	&dev_attr_uboot_ver.attr,
 	NULL,
 };

 static struct bin_attribute *hl_dev_bin_attrs[] = {
 	&bin_attr_eeprom,
 	NULL
 };

 static struct attribute_group hl_dev_attr_group = {
 	.attrs = hl_dev_attrs,
 	.bin_attrs = hl_dev_bin_attrs,
 };

 static struct attribute_group hl_dev_clks_attr_group;

 static const struct attribute_group *hl_dev_attr_groups[] = {
 	&hl_dev_attr_group,
 	&hl_dev_clks_attr_group,
 	NULL,
 };

 int hl_sysfs_init(struct hl_device *hdev)
 {
 	int rc;

 	if (hdev->asic_type == ASIC_GOYA)
 		hdev->pm_mng_profile = PM_AUTO;
 	else
 		hdev->pm_mng_profile = PM_MANUAL;

 	hdev->max_power = hdev->asic_prop.max_power_default;

 	hdev->asic_funcs->add_device_attr(hdev, &hl_dev_clks_attr_group);

 	rc = device_add_groups(hdev->dev, hl_dev_attr_groups);
 	if (rc) {
 		dev_err(hdev->dev,
 			"Failed to add groups to device, error %d\n", rc);
 		return rc;
 	}

 	return 0;
 }

 void hl_sysfs_fini(struct hl_device *hdev)
 {
 	device_remove_groups(hdev->dev, hl_dev_attr_groups);
 }
	// SPDX-License-Identifier: GPL-2.0

	/*
	* Copyright 2016-2019 HabanaLabs, Ltd.
	* All Rights Reserved.
	*/

	#include "habanalabs.h"

	#include <linux/pci.h>

	long hl_get_frequency(struct hl_device *hdev, u32 pll_index, bool curr)
	{
	struct cpucp_packet pkt;
	u32 used_pll_idx;
	u64 result;
	int rc;

	rc = get_used_pll_index(hdev, pll_index, &used_pll_idx);
	if (rc)
	return rc;

	memset(&pkt, 0, sizeof(pkt));

	if (curr)
	pkt.ctl = cpu_to_le32(CPUCP_PACKET_FREQUENCY_CURR_GET <<
	CPUCP_PKT_CTL_OPCODE_SHIFT);
	else
	pkt.ctl = cpu_to_le32(CPUCP_PACKET_FREQUENCY_GET <<
	CPUCP_PKT_CTL_OPCODE_SHIFT);
	pkt.pll_index = cpu_to_le32((u32)used_pll_idx);

	rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt),
	0, &result);

	if (rc) {
	dev_err(hdev->dev,
	"Failed to get frequency of PLL %d, error %d\n",
	used_pll_idx, rc);
	return rc;
	}

	return (long) result;
	}

	void hl_set_frequency(struct hl_device *hdev, u32 pll_index, u64 freq)
	{
	struct cpucp_packet pkt;
	u32 used_pll_idx;
	int rc;

	rc = get_used_pll_index(hdev, pll_index, &used_pll_idx);
	if (rc)
	return;

	memset(&pkt, 0, sizeof(pkt));

	pkt.ctl = cpu_to_le32(CPUCP_PACKET_FREQUENCY_SET <<
	CPUCP_PKT_CTL_OPCODE_SHIFT);
	pkt.pll_index = cpu_to_le32((u32)used_pll_idx);
	pkt.value = cpu_to_le64(freq);

	rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt),
	0, NULL);

	if (rc)
	dev_err(hdev->dev,
	"Failed to set frequency to PLL %d, error %d\n",
	used_pll_idx, rc);
	}

	u64 hl_get_max_power(struct hl_device *hdev)
	{
	struct cpucp_packet pkt;
	u64 result;
	int rc;

	memset(&pkt, 0, sizeof(pkt));

	pkt.ctl = cpu_to_le32(CPUCP_PACKET_MAX_POWER_GET <<
	CPUCP_PKT_CTL_OPCODE_SHIFT);

	rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt),
	0, &result);

	if (rc) {
	dev_err(hdev->dev, "Failed to get max power, error %d\n", rc);
	return (u64) rc;
	}

	return result;
	}

	void hl_set_max_power(struct hl_device *hdev)
	{
	struct cpucp_packet pkt;
	int rc;

	memset(&pkt, 0, sizeof(pkt));

	pkt.ctl = cpu_to_le32(CPUCP_PACKET_MAX_POWER_SET <<
	CPUCP_PKT_CTL_OPCODE_SHIFT);
	pkt.value = cpu_to_le64(hdev->max_power);

	rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt),
	0, NULL);

	if (rc)
	dev_err(hdev->dev, "Failed to set max power, error %d\n", rc);
	}

	static ssize_t uboot_ver_show(struct device dev, struct device_attribute attr,
	char *buf)
	{
	struct hl_device *hdev = dev_get_drvdata(dev);

	return sprintf(buf, "%s\n", hdev->asic_prop.uboot_ver);
	}

	static ssize_t armcp_kernel_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.kernel_version);
	}

	static ssize_t armcp_ver_show(struct device dev, struct device_attribute attr,
	char *buf)
	{
	struct hl_device *hdev = dev_get_drvdata(dev);

	return sprintf(buf, "%s\n", hdev->asic_prop.cpucp_info.cpucp_version);
	}

	static ssize_t cpld_ver_show(struct device dev, struct device_attribute attr,
	char *buf)
	{
	struct hl_device *hdev = dev_get_drvdata(dev);

	return sprintf(buf, "0x%08x\n",
	hdev->asic_prop.cpucp_info.cpld_version);
	}

	static ssize_t cpucp_kernel_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.kernel_version);
	}

	static ssize_t cpucp_ver_show(struct device dev, struct device_attribute attr,
	char *buf)
	{
	struct hl_device *hdev = dev_get_drvdata(dev);

	return sprintf(buf, "%s\n", hdev->asic_prop.cpucp_info.cpucp_version);
	}

	static ssize_t infineon_ver_show(struct device *dev,
	struct device_attribute attr, char buf)
	{
	struct hl_device *hdev = dev_get_drvdata(dev);

	return sprintf(buf, "0x%04x\n",
	hdev->asic_prop.cpucp_info.infineon_version);
	}

	static ssize_t fuse_ver_show(struct device dev, struct device_attribute attr,
	char *buf)
	{
	struct hl_device *hdev = dev_get_drvdata(dev);

	return sprintf(buf, "%s\n", hdev->asic_prop.cpucp_info.fuse_version);
	}

	static ssize_t thermal_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.thermal_version);
	}

	static ssize_t preboot_btl_ver_show(struct device *dev,
	struct device_attribute attr, char buf)
	{
	struct hl_device *hdev = dev_get_drvdata(dev);

	return sprintf(buf, "%s\n", hdev->asic_prop.preboot_ver);
	}

	static ssize_t soft_reset_store(struct device *dev,
	struct device_attribute attr, const char buf,
	size_t count)
	{
	struct hl_device *hdev = dev_get_drvdata(dev);
	long value;
	int rc;

	rc = kstrtoul(buf, 0, &value);

	if (rc) {
	count = -EINVAL;
	goto out;
	}

	if (!hdev->allow_external_soft_reset) {
	dev_err(hdev->dev, "Device does not support soft-reset\n");
	goto out;
	}

	dev_warn(hdev->dev, "Soft-Reset requested through sysfs\n");

	hl_device_reset(hdev, 0);

	out:
	return count;
	}

	static ssize_t hard_reset_store(struct device *dev,
	struct device_attribute *attr,
	const char *buf, size_t count)
	{
	struct hl_device *hdev = dev_get_drvdata(dev);
	long value;
	int rc;

	rc = kstrtoul(buf, 0, &value);

	if (rc) {
	count = -EINVAL;
	goto out;
	}

	dev_warn(hdev->dev, "Hard-Reset requested through sysfs\n");

	hl_device_reset(hdev, HL_RESET_HARD);

	out:
	return count;
	}

	static ssize_t device_type_show(struct device *dev,
	struct device_attribute attr, char buf)
	{
	struct hl_device *hdev = dev_get_drvdata(dev);
	char *str;

	switch (hdev->asic_type) {
	case ASIC_GOYA:
	str = "GOYA";
	break;
	case ASIC_GAUDI:
	str = "GAUDI";
	break;
	case ASIC_GAUDI_SEC:
	str = "GAUDI SEC";
	break;
	default:
	dev_err(hdev->dev, "Unrecognized ASIC type %d\n",
	hdev->asic_type);
	return -EINVAL;
	}

	return sprintf(buf, "%s\n", str);
	}

	static ssize_t pci_addr_show(struct device dev, struct device_attribute attr,
	char *buf)
	{
	struct hl_device *hdev = dev_get_drvdata(dev);

	return sprintf(buf, "%04x:%02x:%02x.%x\n",
	pci_domain_nr(hdev->pdev->bus),
	hdev->pdev->bus->number,
	PCI_SLOT(hdev->pdev->devfn),
	PCI_FUNC(hdev->pdev->devfn));
	}

	static ssize_t status_show(struct device dev, struct device_attribute attr,
	char *buf)
	{
	struct hl_device *hdev = dev_get_drvdata(dev);
	char str[HL_STR_MAX];

	strscpy(str, hdev->status[hl_device_status(hdev)], HL_STR_MAX);

	/* use uppercase for backward compatibility */
	str[0] = 'A' + (str[0] - 'a');

	return sprintf(buf, "%s\n", str);
	}

	static ssize_t soft_reset_cnt_show(struct device *dev,
	struct device_attribute attr, char buf)
	{
	struct hl_device *hdev = dev_get_drvdata(dev);

	return sprintf(buf, "%d\n", hdev->soft_reset_cnt);
	}

	static ssize_t hard_reset_cnt_show(struct device *dev,
	struct device_attribute attr, char buf)
	{
	struct hl_device *hdev = dev_get_drvdata(dev);

	return sprintf(buf, "%d\n", hdev->hard_reset_cnt);
	}

	static ssize_t max_power_show(struct device dev, struct device_attribute attr,
	char *buf)
	{
	struct hl_device *hdev = dev_get_drvdata(dev);
	long val;

	if (!hl_device_operational(hdev, NULL))
	return -ENODEV;

	val = hl_get_max_power(hdev);

	return sprintf(buf, "%lu\n", val);
	}

	static ssize_t max_power_store(struct device *dev,
	struct device_attribute attr, const char buf, size_t count)
	{
	struct hl_device *hdev = dev_get_drvdata(dev);
	unsigned long value;
	int rc;

	if (!hl_device_operational(hdev, NULL)) {
	count = -ENODEV;
	goto out;
	}

	rc = kstrtoul(buf, 0, &value);

	if (rc) {
	count = -EINVAL;
	goto out;
	}

	hdev->max_power = value;
	hl_set_max_power(hdev);

	out:
	return count;
	}

	static ssize_t eeprom_read_handler(struct file filp, struct kobject kobj,
	struct bin_attribute attr, char buf, loff_t offset,
	size_t max_size)
	{
	struct device *dev = kobj_to_dev(kobj);
	struct hl_device *hdev = dev_get_drvdata(dev);
	char *data;
	int rc;

	if (!hl_device_operational(hdev, NULL))
	return -ENODEV;

	if (!max_size)
	return -EINVAL;

	data = kzalloc(max_size, GFP_KERNEL);
	if (!data)
	return -ENOMEM;

	rc = hdev->asic_funcs->get_eeprom_data(hdev, data, max_size);
	if (rc)
	goto out;

	memcpy(buf, data, max_size);

	out:
	kfree(data);

	return max_size;
	}

	static DEVICE_ATTR_RO(armcp_kernel_ver);
	static DEVICE_ATTR_RO(armcp_ver);
	static DEVICE_ATTR_RO(cpld_ver);
	static DEVICE_ATTR_RO(cpucp_kernel_ver);
	static DEVICE_ATTR_RO(cpucp_ver);
	static DEVICE_ATTR_RO(device_type);
	static DEVICE_ATTR_RO(fuse_ver);
	static DEVICE_ATTR_WO(hard_reset);
	static DEVICE_ATTR_RO(hard_reset_cnt);
	static DEVICE_ATTR_RO(infineon_ver);
	static DEVICE_ATTR_RW(max_power);
	static DEVICE_ATTR_RO(pci_addr);
	static DEVICE_ATTR_RO(preboot_btl_ver);
	static DEVICE_ATTR_WO(soft_reset);
	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 struct bin_attribute bin_attr_eeprom = {
	.attr = {.name = "eeprom", .mode = (0444)},
	.size = PAGE_SIZE,
	.read = eeprom_read_handler
	};

	static struct attribute *hl_dev_attrs[] = {
	&dev_attr_armcp_kernel_ver.attr,
	&dev_attr_armcp_ver.attr,
	&dev_attr_cpld_ver.attr,
	&dev_attr_cpucp_kernel_ver.attr,
	&dev_attr_cpucp_ver.attr,
	&dev_attr_device_type.attr,
	&dev_attr_fuse_ver.attr,
	&dev_attr_hard_reset.attr,
	&dev_attr_hard_reset_cnt.attr,
	&dev_attr_infineon_ver.attr,
	&dev_attr_max_power.attr,
	&dev_attr_pci_addr.attr,
	&dev_attr_preboot_btl_ver.attr,
	&dev_attr_soft_reset.attr,
	&dev_attr_soft_reset_cnt.attr,
	&dev_attr_status.attr,
	&dev_attr_thermal_ver.attr,
	&dev_attr_uboot_ver.attr,
	NULL,
	};

	static struct bin_attribute *hl_dev_bin_attrs[] = {
	&bin_attr_eeprom,
	NULL
	};

	static struct attribute_group hl_dev_attr_group = {
	.attrs = hl_dev_attrs,
	.bin_attrs = hl_dev_bin_attrs,
	};

	static struct attribute_group hl_dev_clks_attr_group;

	static const struct attribute_group *hl_dev_attr_groups[] = {
	&hl_dev_attr_group,
	&hl_dev_clks_attr_group,
	NULL,
	};

	int hl_sysfs_init(struct hl_device *hdev)
	{
	int rc;

	if (hdev->asic_type == ASIC_GOYA)
	hdev->pm_mng_profile = PM_AUTO;
	else
	hdev->pm_mng_profile = PM_MANUAL;

	hdev->max_power = hdev->asic_prop.max_power_default;

	hdev->asic_funcs->add_device_attr(hdev, &hl_dev_clks_attr_group);

	rc = device_add_groups(hdev->dev, hl_dev_attr_groups);
	if (rc) {
	dev_err(hdev->dev,
	"Failed to add groups to device, error %d\n", rc);
	return rc;
	}

	return 0;
	}

	void hl_sysfs_fini(struct hl_device *hdev)
	{
	device_remove_groups(hdev->dev, hl_dev_attr_groups);
	}