1 // SPDX-License-Identifier: GPL-2.0
19 static int nvme_get_temp_thresh(struct nvme_ctrl *ctrl, int sensor, bool under,  in nvme_get_temp_thresh()  argument
20 				long *temp)  in nvme_get_temp_thresh()  argument
22 	unsigned int threshold = sensor << NVME_TEMP_THRESH_SELECT_SHIFT;  in nvme_get_temp_thresh()
32 		return -EIO;  in nvme_get_temp_thresh()
35 	*temp = kelvin_to_millicelsius(status & NVME_TEMP_THRESH_MASK);  in nvme_get_temp_thresh()
40 static int nvme_set_temp_thresh(struct nvme_ctrl *ctrl, int sensor, bool under,  in nvme_set_temp_thresh()  argument
41 				long temp)  in nvme_set_temp_thresh()  argument
43 	unsigned int threshold = sensor << NVME_TEMP_THRESH_SELECT_SHIFT;  in nvme_set_temp_thresh()
46 	temp = millicelsius_to_kelvin(temp);  in nvme_set_temp_thresh()
47 	threshold |= clamp_val(temp, 0, NVME_TEMP_THRESH_MASK);  in nvme_set_temp_thresh()
55 		return -EIO;  in nvme_set_temp_thresh()
62 	return nvme_get_log(data->ctrl, NVME_NSID_ALL, NVME_LOG_SMART, 0,  in nvme_hwmon_get_smart_log()
63 			   NVME_CSI_NVM, data->log, sizeof(*data->log), 0);  in nvme_hwmon_get_smart_log()
70 	struct nvme_smart_log *log = data->log;  in nvme_hwmon_read()
71 	int temp;  in nvme_hwmon_read()  local
80 		return nvme_get_temp_thresh(data->ctrl, channel, false, val);  in nvme_hwmon_read()
82 		return nvme_get_temp_thresh(data->ctrl, channel, true, val);  in nvme_hwmon_read()
84 		*val = kelvin_to_millicelsius(data->ctrl->cctemp);  in nvme_hwmon_read()
90 	mutex_lock(&data->read_lock);  in nvme_hwmon_read()
98 			temp = get_unaligned_le16(log->temperature);  in nvme_hwmon_read()
100 			temp = le16_to_cpu(log->temp_sensor[channel - 1]);  in nvme_hwmon_read()
101 		*val = kelvin_to_millicelsius(temp);  in nvme_hwmon_read()
104 		*val = !!(log->critical_warning & NVME_SMART_CRIT_TEMPERATURE);  in nvme_hwmon_read()
107 		err = -EOPNOTSUPP;  in nvme_hwmon_read()
111 	mutex_unlock(&data->read_lock);  in nvme_hwmon_read()
122 		return nvme_set_temp_thresh(data->ctrl, channel, false, val);  in nvme_hwmon_write()
124 		return nvme_set_temp_thresh(data->ctrl, channel, true, val);  in nvme_hwmon_write()
129 	return -EOPNOTSUPP;  in nvme_hwmon_write()
134 	"Sensor 1",
135 	"Sensor 2",
136 	"Sensor 3",
137 	"Sensor 4",
138 	"Sensor 5",
139 	"Sensor 6",
140 	"Sensor 7",
141 	"Sensor 8",
160 		if (!channel && data->ctrl->cctemp)  in nvme_hwmon_is_visible()
165 		if ((!channel && data->ctrl->wctemp) ||  in nvme_hwmon_is_visible()
166 		    (channel && data->log->temp_sensor[channel - 1] &&  in nvme_hwmon_is_visible()
167 		     !(data->ctrl->quirks &  in nvme_hwmon_is_visible()
169 			if (data->ctrl->quirks &  in nvme_hwmon_is_visible()
181 		if (!channel || data->log->temp_sensor[channel - 1])  in nvme_hwmon_is_visible()
192 	HWMON_CHANNEL_INFO(temp,
228 	struct device *dev = ctrl->device;  in nvme_hwmon_init()
235 		return -ENOMEM;  in nvme_hwmon_init()
237 	data->log = kzalloc(sizeof(*data->log), GFP_KERNEL);  in nvme_hwmon_init()
238 	if (!data->log) {  in nvme_hwmon_init()
239 		err = -ENOMEM;  in nvme_hwmon_init()
243 	data->ctrl = ctrl;  in nvme_hwmon_init()
244 	mutex_init(&data->read_lock);  in nvme_hwmon_init()
260 	ctrl->hwmon_device = hwmon;  in nvme_hwmon_init()
264 	kfree(data->log);  in nvme_hwmon_init()
272 	if (ctrl->hwmon_device) {  in nvme_hwmon_exit()
274 			dev_get_drvdata(ctrl->hwmon_device);  in nvme_hwmon_exit()
276 		hwmon_device_unregister(ctrl->hwmon_device);  in nvme_hwmon_exit()
277 		ctrl->hwmon_device = NULL;  in nvme_hwmon_exit()
278 		kfree(data->log);  in nvme_hwmon_exit()