1 files changed, 518 insertions, 0 deletions
diff --git a/drivers/accel/habanalabs/common/sysfs.c b/drivers/accel/habanalabs/common/sysfs.c
new file mode 100644
index 000000000..01f89f029
--- /dev/null
+++ b/drivers/accel/habanalabs/common/sysfs.c
@@ -0,0 +1,518 @@
+// SPDX-License-Identifier: GPL-2.0
+
+/*
+ * Copyright 2016-2022 HabanaLabs, Ltd.
+ * All Rights Reserved.
+ */
+
+#include "habanalabs.h"
+
+#include <linux/pci.h>
+
+static ssize_t clk_max_freq_mhz_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+	struct hl_device *hdev = dev_get_drvdata(dev);
+	long value;
+
+	if (!hl_device_operational(hdev, NULL))
+		return -ENODEV;
+
+	value = hl_fw_get_frequency(hdev, hdev->asic_prop.clk_pll_index, false);
+	if (value < 0)
+		return value;
+
+	hdev->asic_prop.max_freq_value = value;
+
+	return sprintf(buf, "%lu\n", (value / 1000 / 1000));
+}
+
+static ssize_t clk_max_freq_mhz_store(struct device *dev, struct device_attribute *attr,
+					const char *buf, size_t count)
+{
+	struct hl_device *hdev = dev_get_drvdata(dev);
+	int rc;
+	u64 value;
+
+	if (!hl_device_operational(hdev, NULL)) {
+		count = -ENODEV;
+		goto fail;
+	}
+
+	rc = kstrtoull(buf, 0, &value);
+	if (rc) {
+		count = -EINVAL;
+		goto fail;
+	}
+
+	hdev->asic_prop.max_freq_value = value * 1000 * 1000;
+
+	hl_fw_set_frequency(hdev, hdev->asic_prop.clk_pll_index, hdev->asic_prop.max_freq_value);
+
+fail:
+	return count;
+}
+
+static ssize_t clk_cur_freq_mhz_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+	struct hl_device *hdev = dev_get_drvdata(dev);
+	long value;
+
+	if (!hl_device_operational(hdev, NULL))
+		return -ENODEV;
+
+	value = hl_fw_get_frequency(hdev, hdev->asic_prop.clk_pll_index, true);
+	if (value < 0)
+		return value;
+
+	return sprintf(buf, "%lu\n", (value / 1000 / 1000));
+}
+
+static DEVICE_ATTR_RW(clk_max_freq_mhz);
+static DEVICE_ATTR_RO(clk_cur_freq_mhz);
+
+static struct attribute *hl_dev_clk_attrs[] = {
+	&dev_attr_clk_max_freq_mhz.attr,
+	&dev_attr_clk_cur_freq_mhz.attr,
+	NULL,
+};
+
+static ssize_t vrm_ver_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+	struct hl_device *hdev = dev_get_drvdata(dev);
+	struct cpucp_info *cpucp_info;
+
+	cpucp_info = &hdev->asic_prop.cpucp_info;
+
+	if (cpucp_info->infineon_second_stage_version)
+		return sprintf(buf, "%#04x %#04x\n", le32_to_cpu(cpucp_info->infineon_version),
+				le32_to_cpu(cpucp_info->infineon_second_stage_version));
+	else
+		return sprintf(buf, "%#04x\n", le32_to_cpu(cpucp_info->infineon_version));
+}
+
+static DEVICE_ATTR_RO(vrm_ver);
+
+static struct attribute *hl_dev_vrm_attrs[] = {
+	&dev_attr_vrm_ver.attr,
+	NULL,
+};
+
+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",
+			le32_to_cpu(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 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 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)
+{
+	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->asic_prop.allow_inference_soft_reset) {
+		dev_err(hdev->dev, "Device does not support inference soft-reset\n");
+		goto out;
+	}
+
+	dev_warn(hdev->dev, "Inference 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_DRV_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;
+	case ASIC_GAUDI2:
+		str = "GAUDI2";
+		break;
+	case ASIC_GAUDI2B:
+		str = "GAUDI2B";
+		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->reset_info.compute_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->reset_info.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_fw_get_max_power(hdev);
+	if (val < 0)
+		return val;
+
+	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_fw_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 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);
+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_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 DEVICE_ATTR_RO(fw_os_ver);
+static DEVICE_ATTR_RO(security_enabled);
+
+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_max_power.attr,
+	&dev_attr_pci_addr.attr,
+	&dev_attr_preboot_btl_ver.attr,
+	&dev_attr_status.attr,
+	&dev_attr_thermal_ver.attr,
+	&dev_attr_uboot_ver.attr,
+	&dev_attr_fw_os_ver.attr,
+	&dev_attr_security_enabled.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 struct attribute_group hl_dev_vrm_attr_group;
+
+static const struct attribute_group *hl_dev_attr_groups[] = {
+	&hl_dev_attr_group,
+	&hl_dev_clks_attr_group,
+	&hl_dev_vrm_attr_group,
+	NULL,
+};
+
+static struct attribute *hl_dev_inference_attrs[] = {
+	&dev_attr_soft_reset.attr,
+	&dev_attr_soft_reset_cnt.attr,
+	NULL,
+};
+
+static struct attribute_group hl_dev_inference_attr_group = {
+	.attrs = hl_dev_inference_attrs,
+};
+
+static const struct attribute_group *hl_dev_inference_attr_groups[] = {
+	&hl_dev_inference_attr_group,
+	NULL,
+};
+
+void hl_sysfs_add_dev_clk_attr(struct hl_device *hdev, struct attribute_group *dev_clk_attr_grp)
+{
+	dev_clk_attr_grp->attrs = hl_dev_clk_attrs;
+}
+
+void hl_sysfs_add_dev_vrm_attr(struct hl_device *hdev, struct attribute_group *dev_vrm_attr_grp)
+{
+	dev_vrm_attr_grp->attrs = hl_dev_vrm_attrs;
+}
+
+int hl_sysfs_init(struct hl_device *hdev)
+{
+	int rc;
+
+	hdev->max_power = hdev->asic_prop.max_power_default;
+
+	hdev->asic_funcs->add_device_attr(hdev, &hl_dev_clks_attr_group, &hl_dev_vrm_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;
+	}
+
+	if (!hdev->asic_prop.allow_inference_soft_reset)
+		return 0;
+
+	rc = device_add_groups(hdev->dev, hl_dev_inference_attr_groups);
+	if (rc) {
+		dev_err(hdev->dev,
+			"Failed to add groups to device, error %d\n", rc);
+		goto remove_groups;
+	}
+
+	return 0;
+
+remove_groups:
+	device_remove_groups(hdev->dev, hl_dev_attr_groups);
+	return rc;
+}
+
+void hl_sysfs_fini(struct hl_device *hdev)
+{
+	device_remove_groups(hdev->dev, hl_dev_attr_groups);
+
+	if (!hdev->asic_prop.allow_inference_soft_reset)
+		return;
+
+	device_remove_groups(hdev->dev, hl_dev_inference_attr_groups);
+}