1 // SPDX-License-Identifier: GPL-2.0
5  * Copyright (C) 2017-2018 Intel Corporation, Inc.
18 #include <linux/hwmon-sysfs.h>
23 #include <linux/fpga-dfl.h>
26 #include "dfl-fme.h"
147 	struct dfl_fpga_cdev *cdev = fdata->dfl_cdev;  in fme_hdr_ioctl_release_port()
151 		return -EFAULT;  in fme_hdr_ioctl_release_port()
159 	struct dfl_fpga_cdev *cdev = fdata->dfl_cdev;  in fme_hdr_ioctl_assign_port()
163 		return -EFAULT;  in fme_hdr_ioctl_assign_port()
172 	struct dfl_feature_dev_data *fdata = to_dfl_feature_dev_data(&pdev->dev);  in fme_hdr_ioctl()
181 	return -ENODEV;  in fme_hdr_ioctl()
201 /* threshold1 policy: 0 - AP2 (90% throttle) / 1 - AP1 (50% throttle) */
229 	return fme_thermal_throttle_support(feature->ioaddr) ? 0444 : 0;  in thermal_hwmon_attrs_visible()
240 		v = readq(feature->ioaddr + FME_THERM_RDSENSOR_FMT1);  in thermal_hwmon_read()
244 		v = readq(feature->ioaddr + FME_THERM_THRESHOLD);  in thermal_hwmon_read()
248 		v = readq(feature->ioaddr + FME_THERM_THRESHOLD);  in thermal_hwmon_read()
252 		v = readq(feature->ioaddr + FME_THERM_THRESHOLD);  in thermal_hwmon_read()
256 		v = readq(feature->ioaddr + FME_THERM_THRESHOLD);  in thermal_hwmon_read()
260 		v = readq(feature->ioaddr + FME_THERM_THRESHOLD);  in thermal_hwmon_read()
264 		return -EOPNOTSUPP;  in thermal_hwmon_read()
293 	v = readq(feature->ioaddr + FME_THERM_THRESHOLD);  in temp1_max_policy_show()
312 	return fme_thermal_throttle_support(feature->ioaddr) ? attr->mode : 0;  in thermal_extra_attrs_visible()
330 	 * temp1_input      -> FPGA device temperature  in fme_thermal_mgmt_init()
331 	 * temp1_max        -> hardware threshold 1 -> 50% or 90% throttling  in fme_thermal_mgmt_init()
332 	 * temp1_crit       -> hardware threshold 2 -> 100% throttling  in fme_thermal_mgmt_init()
333 	 * temp1_emergency  -> hardware trip_threshold to shutdown FPGA  in fme_thermal_mgmt_init()
334 	 * temp1_max_alarm  -> hardware threshold 1 alarm  in fme_thermal_mgmt_init()
335 	 * temp1_crit_alarm -> hardware threshold 2 alarm  in fme_thermal_mgmt_init()
344 	hwmon = devm_hwmon_device_register_with_info(&pdev->dev,  in fme_thermal_mgmt_init()
349 		dev_err(&pdev->dev, "Fail to register thermal hwmon\n");  in fme_thermal_mgmt_init()
370 #define PWR_THRESHOLD1		GENMASK_ULL(6, 0)	/* in Watts */
371 #define PWR_THRESHOLD2		GENMASK_ULL(14, 8)	/* in Watts */
372 #define PWR_THRESHOLD_MAX	0x7f			/* in Watts */
377 #define XEON_PWR_LIMIT		GENMASK_ULL(14, 0)	/* in 0.1 Watts */
380 #define FPGA_PWR_LIMIT		GENMASK_ULL(14, 0)	/* in 0.1 Watts */
391 		v = readq(feature->ioaddr + FME_PWR_STATUS);  in power_hwmon_read()
392 		*val = (long)(FIELD_GET(PWR_CONSUMED, v) * MICRO);  in power_hwmon_read()
395 		v = readq(feature->ioaddr + FME_PWR_THRESHOLD);  in power_hwmon_read()
396 		*val = (long)(FIELD_GET(PWR_THRESHOLD1, v) * MICRO);  in power_hwmon_read()
399 		v = readq(feature->ioaddr + FME_PWR_THRESHOLD);  in power_hwmon_read()
400 		*val = (long)(FIELD_GET(PWR_THRESHOLD2, v) * MICRO);  in power_hwmon_read()
403 		v = readq(feature->ioaddr + FME_PWR_THRESHOLD);  in power_hwmon_read()
407 		v = readq(feature->ioaddr + FME_PWR_THRESHOLD);  in power_hwmon_read()
411 		return -EOPNOTSUPP;  in power_hwmon_read()
420 	struct dfl_feature_dev_data *fdata = to_dfl_feature_dev_data(dev->parent);  in power_hwmon_write()
425 	val = clamp_val(val / MICRO, 0, PWR_THRESHOLD_MAX);  in power_hwmon_write()
427 	mutex_lock(&fdata->lock);  in power_hwmon_write()
431 		v = readq(feature->ioaddr + FME_PWR_THRESHOLD);  in power_hwmon_write()
434 		writeq(v, feature->ioaddr + FME_PWR_THRESHOLD);  in power_hwmon_write()
437 		v = readq(feature->ioaddr + FME_PWR_THRESHOLD);  in power_hwmon_write()
440 		writeq(v, feature->ioaddr + FME_PWR_THRESHOLD);  in power_hwmon_write()
443 		ret = -EOPNOTSUPP;  in power_hwmon_write()
447 	mutex_unlock(&fdata->lock);  in power_hwmon_write()
494 	v = readq(feature->ioaddr + FME_PWR_XEON_LIMIT);  in power1_xeon_limit_show()
509 	v = readq(feature->ioaddr + FME_PWR_FPGA_LIMIT);  in power1_fpga_limit_show()
523 	v = readq(feature->ioaddr + FME_PWR_STATUS);  in power1_ltr_show()
547 	hwmon = devm_hwmon_device_register_with_info(&pdev->dev,  in fme_power_mgmt_init()
552 		dev_err(&pdev->dev, "Fail to register power hwmon\n");  in fme_power_mgmt_init()
608 	struct platform_device *fdev = fdata->dev;  in fme_open()
611 	mutex_lock(&fdata->lock);  in fme_open()
612 	ret = dfl_feature_dev_use_begin(fdata, filp->f_flags & O_EXCL);  in fme_open()
614 		dev_dbg(&fdev->dev, "Device File Opened %d Times\n",  in fme_open()
616 		filp->private_data = fdata;  in fme_open()
618 	mutex_unlock(&fdata->lock);  in fme_open()
625 	struct dfl_feature_dev_data *fdata = filp->private_data;  in fme_release()
626 	struct platform_device *pdev = fdata->dev;  in fme_release()
629 	dev_dbg(&pdev->dev, "Device File Release\n");  in fme_release()
631 	mutex_lock(&fdata->lock);  in fme_release()
637 						  feature->nr_irqs, NULL);  in fme_release()
638 	mutex_unlock(&fdata->lock);  in fme_release()
645 	struct dfl_feature_dev_data *fdata = filp->private_data;  in fme_ioctl()
646 	struct platform_device *pdev = fdata->dev;  in fme_ioctl()
650 	dev_dbg(&pdev->dev, "%s cmd 0x%x\n", __func__, cmd);  in fme_ioctl()
659 		 * Let sub-feature's ioctl function to handle the cmd.  in fme_ioctl()
660 		 * Sub-feature's ioctl returns -ENODEV when cmd is not  in fme_ioctl()
665 			if (f->ops && f->ops->ioctl) {  in fme_ioctl()
666 				ret = f->ops->ioctl(pdev, f, cmd, arg);  in fme_ioctl()
667 				if (ret != -ENODEV)  in fme_ioctl()
673 	return -EINVAL;  in fme_ioctl()
678 	struct dfl_feature_dev_data *fdata = to_dfl_feature_dev_data(&pdev->dev);  in fme_dev_init()
681 	fme = devm_kzalloc(&pdev->dev, sizeof(*fme), GFP_KERNEL);  in fme_dev_init()
683 		return -ENOMEM;  in fme_dev_init()
685 	mutex_lock(&fdata->lock);  in fme_dev_init()
687 	mutex_unlock(&fdata->lock);  in fme_dev_init()
694 	struct dfl_feature_dev_data *fdata = to_dfl_feature_dev_data(&pdev->dev);  in fme_dev_destroy()
696 	mutex_lock(&fdata->lock);  in fme_dev_destroy()
698 	mutex_unlock(&fdata->lock);  in fme_dev_destroy()
761 MODULE_ALIAS("platform:dfl-fme");