Merge tag 'misc-habanalabs-next-2020-07-24' of git://people.freedesktop.org/~gabbayo/linux into char-misc-next

Oded writes:

This tag contains the following changes for kernel 5.9-rc1:

- Remove rate limiters from GAUDI configuration (no longer needed).
- Set maximum amount of in-flight CS per ASIC type and increase
  the maximum amount for GAUDI.
- Refactor signal/wait command submissions code
- Calculate trace frequency from PLLs to show accurate profiling data
- Rephrase error messages to make them more clear to the common user
- Add statistics of dropped CS (counter per possible reason for drop)
- Get ECC information from firmware
- Remove support for partial SoC reset in Gaudi
- Halt device CPU only when reset is certain to happen. Sometimes we abort
  the reset procedure and in that case we can't leave device CPU in halt
  mode.
- set each CQ to its own work queue to prevent a race between completions
  on different CQs.
- Use queue pi/ci in order to determine queue occupancy. This is done to
  make the code reusable between current and future ASICs.
- Add more validations for user inputs.
- Refactor PCIe controller configuration to make the code reusable between
  current and future ASICs.
- Update firmware interface headers to latest version
- Move all common code to a dedicated common sub-folder

* tag 'misc-habanalabs-next-2020-07-24' of git://people.freedesktop.org/~gabbayo/linux: (28 commits)
  habanalabs: Fix memory leak in error flow of context initialization
  habanalabs: use no flags on MMU cache invalidation
  habanalabs: enable device before hw_init()
  habanalabs: create internal CB pool
  habanalabs: update hl_boot_if.h from firmware
  habanalabs: create common folder
  habanalabs: check for DMA errors when clearing memory
  habanalabs: verify queue can contain all cs jobs
  habanalabs: Assign each CQ with its own work queue
  habanalabs: halt device CPU only upon certain reset
  habanalabs: remove unused hash
  habanalabs: use queue pi/ci in order to determine queue occupancy
  habanalabs: configure maximum queues per asic
  habanalabs: remove soft-reset support from GAUDI
  habanalabs: PCIe iATU refactoring
  habanalabs: Extract ECC information from FW
  habanalabs: Add dropped cs statistics info struct
  habanalabs: extract cpu boot status lookup
  habanalabs: rephrase error messages
  habanalabs: Increase queues depth
  ...

1 files changed, 579 insertions, 0 deletions

diff --git a/drivers/misc/habanalabs/common/hwmon.c b/drivers/misc/habanalabs/common/hwmon.c
new file mode 100644
index 000000000000..8c6cd77e6af6
--- /dev/null
+++ b/drivers/misc/habanalabs/common/hwmon.c
@@ -0,0 +1,579 @@
+// SPDX-License-Identifier: GPL-2.0
+
+/*
+ * Copyright 2016-2019 HabanaLabs, Ltd.
+ * All Rights Reserved.
+ */
+
+#include "habanalabs.h"
+
+#include <linux/pci.h>
+#include <linux/hwmon.h>
+
+#define SENSORS_PKT_TIMEOUT		1000000	/* 1s */
+#define HWMON_NR_SENSOR_TYPES		(hwmon_pwm + 1)
+
+int hl_build_hwmon_channel_info(struct hl_device *hdev,
+				struct armcp_sensor *sensors_arr)
+{
+	u32 counts[HWMON_NR_SENSOR_TYPES] = {0};
+	u32 *sensors_by_type[HWMON_NR_SENSOR_TYPES] = {NULL};
+	u32 sensors_by_type_next_index[HWMON_NR_SENSOR_TYPES] = {0};
+	struct hwmon_channel_info **channels_info;
+	u32 num_sensors_for_type, num_active_sensor_types = 0,
+			arr_size = 0, *curr_arr;
+	enum hwmon_sensor_types type;
+	int rc, i, j;
+
+	for (i = 0 ; i < ARMCP_MAX_SENSORS ; i++) {
+		type = le32_to_cpu(sensors_arr[i].type);
+
+		if ((type == 0) && (sensors_arr[i].flags == 0))
+			break;
+
+		if (type >= HWMON_NR_SENSOR_TYPES) {
+			dev_err(hdev->dev,
+				"Got wrong sensor type %d from device\n", type);
+			return -EINVAL;
+		}
+
+		counts[type]++;
+		arr_size++;
+	}
+
+	for (i = 0 ; i < HWMON_NR_SENSOR_TYPES ; i++) {
+		if (counts[i] == 0)
+			continue;
+
+		num_sensors_for_type = counts[i] + 1;
+		curr_arr = kcalloc(num_sensors_for_type, sizeof(*curr_arr),
+				GFP_KERNEL);
+		if (!curr_arr) {
+			rc = -ENOMEM;
+			goto sensors_type_err;
+		}
+
+		num_active_sensor_types++;
+		sensors_by_type[i] = curr_arr;
+	}
+
+	for (i = 0 ; i < arr_size ; i++) {
+		type = le32_to_cpu(sensors_arr[i].type);
+		curr_arr = sensors_by_type[type];
+		curr_arr[sensors_by_type_next_index[type]++] =
+				le32_to_cpu(sensors_arr[i].flags);
+	}
+
+	channels_info = kcalloc(num_active_sensor_types + 1,
+			sizeof(*channels_info), GFP_KERNEL);
+	if (!channels_info) {
+		rc = -ENOMEM;
+		goto channels_info_array_err;
+	}
+
+	for (i = 0 ; i < num_active_sensor_types ; i++) {
+		channels_info[i] = kzalloc(sizeof(*channels_info[i]),
+				GFP_KERNEL);
+		if (!channels_info[i]) {
+			rc = -ENOMEM;
+			goto channel_info_err;
+		}
+	}
+
+	for (i = 0, j = 0 ; i < HWMON_NR_SENSOR_TYPES ; i++) {
+		if (!sensors_by_type[i])
+			continue;
+
+		channels_info[j]->type = i;
+		channels_info[j]->config = sensors_by_type[i];
+		j++;
+	}
+
+	hdev->hl_chip_info->info =
+			(const struct hwmon_channel_info **)channels_info;
+
+	return 0;
+
+channel_info_err:
+	for (i = 0 ; i < num_active_sensor_types ; i++)
+		if (channels_info[i]) {
+			kfree(channels_info[i]->config);
+			kfree(channels_info[i]);
+		}
+	kfree(channels_info);
+channels_info_array_err:
+sensors_type_err:
+	for (i = 0 ; i < HWMON_NR_SENSOR_TYPES ; i++)
+		kfree(sensors_by_type[i]);
+
+	return rc;
+}
+
+static int hl_read(struct device *dev, enum hwmon_sensor_types type,
+			u32 attr, int channel, long *val)
+{
+	struct hl_device *hdev = dev_get_drvdata(dev);
+	int rc;
+
+	if (hl_device_disabled_or_in_reset(hdev))
+		return -ENODEV;
+
+	switch (type) {
+	case hwmon_temp:
+		switch (attr) {
+		case hwmon_temp_input:
+		case hwmon_temp_max:
+		case hwmon_temp_crit:
+		case hwmon_temp_max_hyst:
+		case hwmon_temp_crit_hyst:
+		case hwmon_temp_offset:
+		case hwmon_temp_highest:
+			break;
+		default:
+			return -EINVAL;
+		}
+
+		rc = hl_get_temperature(hdev, channel, attr, val);
+		break;
+	case hwmon_in:
+		switch (attr) {
+		case hwmon_in_input:
+		case hwmon_in_min:
+		case hwmon_in_max:
+		case hwmon_in_highest:
+			break;
+		default:
+			return -EINVAL;
+		}
+
+		rc = hl_get_voltage(hdev, channel, attr, val);
+		break;
+	case hwmon_curr:
+		switch (attr) {
+		case hwmon_curr_input:
+		case hwmon_curr_min:
+		case hwmon_curr_max:
+		case hwmon_curr_highest:
+			break;
+		default:
+			return -EINVAL;
+		}
+
+		rc = hl_get_current(hdev, channel, attr, val);
+		break;
+	case hwmon_fan:
+		switch (attr) {
+		case hwmon_fan_input:
+		case hwmon_fan_min:
+		case hwmon_fan_max:
+			break;
+		default:
+			return -EINVAL;
+		}
+		rc = hl_get_fan_speed(hdev, channel, attr, val);
+		break;
+	case hwmon_pwm:
+		switch (attr) {
+		case hwmon_pwm_input:
+		case hwmon_pwm_enable:
+			break;
+		default:
+			return -EINVAL;
+		}
+		rc = hl_get_pwm_info(hdev, channel, attr, val);
+		break;
+	default:
+		return -EINVAL;
+	}
+	return rc;
+}
+
+static int hl_write(struct device *dev, enum hwmon_sensor_types type,
+			u32 attr, int channel, long val)
+{
+	struct hl_device *hdev = dev_get_drvdata(dev);
+
+	if (hl_device_disabled_or_in_reset(hdev))
+		return -ENODEV;
+
+	switch (type) {
+	case hwmon_temp:
+		switch (attr) {
+		case hwmon_temp_offset:
+		case hwmon_temp_reset_history:
+			break;
+		default:
+			return -EINVAL;
+		}
+		hl_set_temperature(hdev, channel, attr, val);
+		break;
+	case hwmon_pwm:
+		switch (attr) {
+		case hwmon_pwm_input:
+		case hwmon_pwm_enable:
+			break;
+		default:
+			return -EINVAL;
+		}
+		hl_set_pwm_info(hdev, channel, attr, val);
+		break;
+	case hwmon_in:
+		switch (attr) {
+		case hwmon_in_reset_history:
+			break;
+		default:
+			return -EINVAL;
+		}
+		hl_set_voltage(hdev, channel, attr, val);
+		break;
+	case hwmon_curr:
+		switch (attr) {
+		case hwmon_curr_reset_history:
+			break;
+		default:
+			return -EINVAL;
+		}
+		hl_set_current(hdev, channel, attr, val);
+		break;
+	default:
+		return -EINVAL;
+	}
+	return 0;
+}
+
+static umode_t hl_is_visible(const void *data, enum hwmon_sensor_types type,
+				u32 attr, int channel)
+{
+	switch (type) {
+	case hwmon_temp:
+		switch (attr) {
+		case hwmon_temp_input:
+		case hwmon_temp_max:
+		case hwmon_temp_max_hyst:
+		case hwmon_temp_crit:
+		case hwmon_temp_crit_hyst:
+		case hwmon_temp_highest:
+			return 0444;
+		case hwmon_temp_offset:
+			return 0644;
+		case hwmon_temp_reset_history:
+			return 0200;
+		}
+		break;
+	case hwmon_in:
+		switch (attr) {
+		case hwmon_in_input:
+		case hwmon_in_min:
+		case hwmon_in_max:
+		case hwmon_in_highest:
+			return 0444;
+		case hwmon_in_reset_history:
+			return 0200;
+		}
+		break;
+	case hwmon_curr:
+		switch (attr) {
+		case hwmon_curr_input:
+		case hwmon_curr_min:
+		case hwmon_curr_max:
+		case hwmon_curr_highest:
+			return 0444;
+		case hwmon_curr_reset_history:
+			return 0200;
+		}
+		break;
+	case hwmon_fan:
+		switch (attr) {
+		case hwmon_fan_input:
+		case hwmon_fan_min:
+		case hwmon_fan_max:
+			return 0444;
+		}
+		break;
+	case hwmon_pwm:
+		switch (attr) {
+		case hwmon_pwm_input:
+		case hwmon_pwm_enable:
+			return 0644;
+		}
+		break;
+	default:
+		break;
+	}
+	return 0;
+}
+
+static const struct hwmon_ops hl_hwmon_ops = {
+	.is_visible = hl_is_visible,
+	.read = hl_read,
+	.write = hl_write
+};
+
+int hl_get_temperature(struct hl_device *hdev,
+			int sensor_index, u32 attr, long *value)
+{
+	struct armcp_packet pkt;
+	int rc;
+
+	memset(&pkt, 0, sizeof(pkt));
+
+	pkt.ctl = cpu_to_le32(ARMCP_PACKET_TEMPERATURE_GET <<
+				ARMCP_PKT_CTL_OPCODE_SHIFT);
+	pkt.sensor_index = __cpu_to_le16(sensor_index);
+	pkt.type = __cpu_to_le16(attr);
+
+	rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt),
+			SENSORS_PKT_TIMEOUT, value);
+
+	if (rc) {
+		dev_err(hdev->dev,
+			"Failed to get temperature from sensor %d, error %d\n",
+			sensor_index, rc);
+		*value = 0;
+	}
+
+	return rc;
+}
+
+int hl_set_temperature(struct hl_device *hdev,
+			int sensor_index, u32 attr, long value)
+{
+	struct armcp_packet pkt;
+	int rc;
+
+	memset(&pkt, 0, sizeof(pkt));
+
+	pkt.ctl = cpu_to_le32(ARMCP_PACKET_TEMPERATURE_SET <<
+				ARMCP_PKT_CTL_OPCODE_SHIFT);
+	pkt.sensor_index = __cpu_to_le16(sensor_index);
+	pkt.type = __cpu_to_le16(attr);
+	pkt.value = __cpu_to_le64(value);
+
+	rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt),
+						SENSORS_PKT_TIMEOUT, NULL);
+
+	if (rc)
+		dev_err(hdev->dev,
+			"Failed to set temperature of sensor %d, error %d\n",
+			sensor_index, rc);
+
+	return rc;
+}
+
+int hl_get_voltage(struct hl_device *hdev,
+			int sensor_index, u32 attr, long *value)
+{
+	struct armcp_packet pkt;
+	int rc;
+
+	memset(&pkt, 0, sizeof(pkt));
+
+	pkt.ctl = cpu_to_le32(ARMCP_PACKET_VOLTAGE_GET <<
+				ARMCP_PKT_CTL_OPCODE_SHIFT);
+	pkt.sensor_index = __cpu_to_le16(sensor_index);
+	pkt.type = __cpu_to_le16(attr);
+
+	rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt),
+					SENSORS_PKT_TIMEOUT, value);
+
+	if (rc) {
+		dev_err(hdev->dev,
+			"Failed to get voltage from sensor %d, error %d\n",
+			sensor_index, rc);
+		*value = 0;
+	}
+
+	return rc;
+}
+
+int hl_get_current(struct hl_device *hdev,
+			int sensor_index, u32 attr, long *value)
+{
+	struct armcp_packet pkt;
+	int rc;
+
+	memset(&pkt, 0, sizeof(pkt));
+
+	pkt.ctl = cpu_to_le32(ARMCP_PACKET_CURRENT_GET <<
+				ARMCP_PKT_CTL_OPCODE_SHIFT);
+	pkt.sensor_index = __cpu_to_le16(sensor_index);
+	pkt.type = __cpu_to_le16(attr);
+
+	rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt),
+					SENSORS_PKT_TIMEOUT, value);
+
+	if (rc) {
+		dev_err(hdev->dev,
+			"Failed to get current from sensor %d, error %d\n",
+			sensor_index, rc);
+		*value = 0;
+	}
+
+	return rc;
+}
+
+int hl_get_fan_speed(struct hl_device *hdev,
+			int sensor_index, u32 attr, long *value)
+{
+	struct armcp_packet pkt;
+	int rc;
+
+	memset(&pkt, 0, sizeof(pkt));
+
+	pkt.ctl = cpu_to_le32(ARMCP_PACKET_FAN_SPEED_GET <<
+				ARMCP_PKT_CTL_OPCODE_SHIFT);
+	pkt.sensor_index = __cpu_to_le16(sensor_index);
+	pkt.type = __cpu_to_le16(attr);
+
+	rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt),
+					SENSORS_PKT_TIMEOUT, value);
+
+	if (rc) {
+		dev_err(hdev->dev,
+			"Failed to get fan speed from sensor %d, error %d\n",
+			sensor_index, rc);
+		*value = 0;
+	}
+
+	return rc;
+}
+
+int hl_get_pwm_info(struct hl_device *hdev,
+			int sensor_index, u32 attr, long *value)
+{
+	struct armcp_packet pkt;
+	int rc;
+
+	memset(&pkt, 0, sizeof(pkt));
+
+	pkt.ctl = cpu_to_le32(ARMCP_PACKET_PWM_GET <<
+				ARMCP_PKT_CTL_OPCODE_SHIFT);
+	pkt.sensor_index = __cpu_to_le16(sensor_index);
+	pkt.type = __cpu_to_le16(attr);
+
+	rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt),
+					SENSORS_PKT_TIMEOUT, value);
+
+	if (rc) {
+		dev_err(hdev->dev,
+			"Failed to get pwm info from sensor %d, error %d\n",
+			sensor_index, rc);
+		*value = 0;
+	}
+
+	return rc;
+}
+
+void hl_set_pwm_info(struct hl_device *hdev, int sensor_index, u32 attr,
+			long value)
+{
+	struct armcp_packet pkt;
+	int rc;
+
+	memset(&pkt, 0, sizeof(pkt));
+
+	pkt.ctl = cpu_to_le32(ARMCP_PACKET_PWM_SET <<
+				ARMCP_PKT_CTL_OPCODE_SHIFT);
+	pkt.sensor_index = __cpu_to_le16(sensor_index);
+	pkt.type = __cpu_to_le16(attr);
+	pkt.value = cpu_to_le64(value);
+
+	rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt),
+					SENSORS_PKT_TIMEOUT, NULL);
+
+	if (rc)
+		dev_err(hdev->dev,
+			"Failed to set pwm info to sensor %d, error %d\n",
+			sensor_index, rc);
+}
+
+int hl_set_voltage(struct hl_device *hdev,
+			int sensor_index, u32 attr, long value)
+{
+	struct armcp_packet pkt;
+	int rc;
+
+	memset(&pkt, 0, sizeof(pkt));
+
+	pkt.ctl = cpu_to_le32(ARMCP_PACKET_VOLTAGE_SET <<
+				ARMCP_PKT_CTL_OPCODE_SHIFT);
+	pkt.sensor_index = __cpu_to_le16(sensor_index);
+	pkt.type = __cpu_to_le16(attr);
+	pkt.value = __cpu_to_le64(value);
+
+	rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt),
+						SENSORS_PKT_TIMEOUT, NULL);
+
+	if (rc)
+		dev_err(hdev->dev,
+			"Failed to set voltage of sensor %d, error %d\n",
+			sensor_index, rc);
+
+	return rc;
+}
+
+int hl_set_current(struct hl_device *hdev,
+			int sensor_index, u32 attr, long value)
+{
+	struct armcp_packet pkt;
+	int rc;
+
+	memset(&pkt, 0, sizeof(pkt));
+
+	pkt.ctl = cpu_to_le32(ARMCP_PACKET_CURRENT_SET <<
+				ARMCP_PKT_CTL_OPCODE_SHIFT);
+	pkt.sensor_index = __cpu_to_le16(sensor_index);
+	pkt.type = __cpu_to_le16(attr);
+	pkt.value = __cpu_to_le64(value);
+
+	rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt),
+						SENSORS_PKT_TIMEOUT, NULL);
+
+	if (rc)
+		dev_err(hdev->dev,
+			"Failed to set current of sensor %d, error %d\n",
+			sensor_index, rc);
+
+	return rc;
+}
+
+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))
+		return 0;
+
+	if (hdev->hl_chip_info->info) {
+		hdev->hl_chip_info->ops = &hl_hwmon_ops;
+
+		hdev->hwmon_dev = hwmon_device_register_with_info(dev,
+					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,
+				"Unable to register hwmon device: %d\n", rc);
+			return rc;
+		}
+
+		dev_info(hdev->dev, "%s: add sensors information\n",
+			dev_name(hdev->hwmon_dev));
+
+		hdev->hwmon_initialized = true;
+	} else {
+		dev_info(hdev->dev, "no available sensors\n");
+	}
+
+	return 0;
+}
+
+void hl_hwmon_fini(struct hl_device *hdev)
+{
+	if (!hdev->hwmon_initialized)
+		return;
+
+	hwmon_device_unregister(hdev->hwmon_dev);
+}