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path: root/drivers/misc/habanalabs/common/sysfs.c
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Diffstat (limited to 'drivers/misc/habanalabs/common/sysfs.c')
-rw-r--r--drivers/misc/habanalabs/common/sysfs.c514
1 files changed, 514 insertions, 0 deletions
diff --git a/drivers/misc/habanalabs/common/sysfs.c b/drivers/misc/habanalabs/common/sysfs.c
new file mode 100644
index 000000000..36e981413
--- /dev/null
+++ b/drivers/misc/habanalabs/common/sysfs.c
@@ -0,0 +1,514 @@
+// 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_GAUDI2_SEC:
+ str = "GAUDI2 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->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);
+ return rc;
+ }
+
+ return 0;
+}
+
+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);
+}