Update Linux to v5.4.2
Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/drivers/misc/habanalabs/sysfs.c b/drivers/misc/habanalabs/sysfs.c
new file mode 100644
index 0000000..4cd622b
--- /dev/null
+++ b/drivers/misc/habanalabs/sysfs.c
@@ -0,0 +1,427 @@
+// SPDX-License-Identifier: GPL-2.0
+
+/*
+ * Copyright 2016-2019 HabanaLabs, Ltd.
+ * All Rights Reserved.
+ */
+
+#include "habanalabs.h"
+
+#include <linux/pci.h>
+
+#define SET_CLK_PKT_TIMEOUT 1000000 /* 1s */
+#define SET_PWR_PKT_TIMEOUT 1000000 /* 1s */
+
+long hl_get_frequency(struct hl_device *hdev, u32 pll_index, bool curr)
+{
+ struct armcp_packet pkt;
+ long result;
+ int rc;
+
+ memset(&pkt, 0, sizeof(pkt));
+
+ if (curr)
+ pkt.ctl = cpu_to_le32(ARMCP_PACKET_FREQUENCY_CURR_GET <<
+ ARMCP_PKT_CTL_OPCODE_SHIFT);
+ else
+ pkt.ctl = cpu_to_le32(ARMCP_PACKET_FREQUENCY_GET <<
+ ARMCP_PKT_CTL_OPCODE_SHIFT);
+ pkt.pll_index = cpu_to_le32(pll_index);
+
+ rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt),
+ SET_CLK_PKT_TIMEOUT, &result);
+
+ if (rc) {
+ dev_err(hdev->dev,
+ "Failed to get frequency of PLL %d, error %d\n",
+ pll_index, rc);
+ result = rc;
+ }
+
+ return result;
+}
+
+void hl_set_frequency(struct hl_device *hdev, u32 pll_index, u64 freq)
+{
+ struct armcp_packet pkt;
+ int rc;
+
+ memset(&pkt, 0, sizeof(pkt));
+
+ pkt.ctl = cpu_to_le32(ARMCP_PACKET_FREQUENCY_SET <<
+ ARMCP_PKT_CTL_OPCODE_SHIFT);
+ pkt.pll_index = cpu_to_le32(pll_index);
+ pkt.value = cpu_to_le64(freq);
+
+ rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt),
+ SET_CLK_PKT_TIMEOUT, NULL);
+
+ if (rc)
+ dev_err(hdev->dev,
+ "Failed to set frequency to PLL %d, error %d\n",
+ pll_index, rc);
+}
+
+u64 hl_get_max_power(struct hl_device *hdev)
+{
+ struct armcp_packet pkt;
+ long result;
+ int rc;
+
+ memset(&pkt, 0, sizeof(pkt));
+
+ pkt.ctl = cpu_to_le32(ARMCP_PACKET_MAX_POWER_GET <<
+ ARMCP_PKT_CTL_OPCODE_SHIFT);
+
+ rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt),
+ SET_PWR_PKT_TIMEOUT, &result);
+
+ if (rc) {
+ dev_err(hdev->dev, "Failed to get max power, error %d\n", rc);
+ result = rc;
+ }
+
+ return result;
+}
+
+void hl_set_max_power(struct hl_device *hdev, u64 value)
+{
+ struct armcp_packet pkt;
+ int rc;
+
+ memset(&pkt, 0, sizeof(pkt));
+
+ pkt.ctl = cpu_to_le32(ARMCP_PACKET_MAX_POWER_SET <<
+ ARMCP_PKT_CTL_OPCODE_SHIFT);
+ pkt.value = cpu_to_le64(value);
+
+ rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt),
+ SET_PWR_PKT_TIMEOUT, 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.armcp_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.armcp_info.armcp_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.armcp_info.cpld_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.armcp_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.armcp_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.armcp_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;
+ }
+
+ hl_device_reset(hdev, false, false);
+
+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;
+ }
+
+ hl_device_reset(hdev, true, false);
+
+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;
+ 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;
+
+ if (atomic_read(&hdev->in_reset))
+ str = "In reset";
+ else if (hdev->disabled)
+ str = "Malfunction";
+ else
+ str = "Operational";
+
+ 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_disabled_or_in_reset(hdev))
+ 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_disabled_or_in_reset(hdev)) {
+ count = -ENODEV;
+ goto out;
+ }
+
+ rc = kstrtoul(buf, 0, &value);
+
+ if (rc) {
+ count = -EINVAL;
+ goto out;
+ }
+
+ hdev->max_power = value;
+ hl_set_max_power(hdev, value);
+
+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 = container_of(kobj, struct device, kobj);
+ struct hl_device *hdev = dev_get_drvdata(dev);
+ char *data;
+ int rc;
+
+ 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(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_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;
+
+ hdev->pm_mng_profile = PM_AUTO;
+ 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);
+}