// SPDX-License-Identifier: GPL-2.0 /* Copyright (C) 2021-2024 Linaro Ltd. */ #include <linux/device.h>#include <linux/sysfs.h>#include <linux/types.h> #include "ipa.h"#include "ipa_sysfs.h"#include "ipa_version.h" static const char *ipa_version_string(struct ipa *ipa){	switch (ipa->version) {	case IPA_VERSION_3_0:		return "3.0";	case IPA_VERSION_3_1:		return "3.1";	case IPA_VERSION_3_5:		return "3.5";	case IPA_VERSION_3_5_1:		return "3.5.1";	case IPA_VERSION_4_0:		return "4.0";	case IPA_VERSION_4_1:		return "4.1";	case IPA_VERSION_4_2:		return "4.2";	case IPA_VERSION_4_5:		return "4.5";	case IPA_VERSION_4_7:		return "4.7";	case IPA_VERSION_4_9:		return "4.9";	case IPA_VERSION_4_11:		return "4.11";	case IPA_VERSION_5_0:		return "5.0";	case IPA_VERSION_5_1:		return "5.1";	case IPA_VERSION_5_2:		return "5.2";	case IPA_VERSION_5_5:		return "5.5";	default:		return "0.0";	/* Should not happen */	}} static ssize_tversion_show(struct device *dev, struct device_attribute *attr, char *buf){	struct ipa *ipa = dev_get_drvdata(dev); 	return sysfs_emit(buf, "%s\n", ipa_version_string(ipa));} static DEVICE_ATTR_RO(version); static struct attribute *ipa_attrs[] = {	&dev_attr_version.attr,	NULL}; const struct attribute_group ipa_attribute_group = {	.attrs		= ipa_attrs,}; static const char *ipa_offload_string(struct ipa *ipa){	return ipa->version < IPA_VERSION_4_5 ? "MAPv4" : "MAPv5";} static ssize_t rx_offload_show(struct device *dev,			       struct device_attribute *attr, char *buf){	struct ipa *ipa = dev_get_drvdata(dev); 	return sysfs_emit(buf, "%s\n", ipa_offload_string(ipa));} static DEVICE_ATTR_RO(rx_offload); static ssize_t tx_offload_show(struct device *dev,			       struct device_attribute *attr, char *buf){	struct ipa *ipa = dev_get_drvdata(dev); 	return sysfs_emit(buf, "%s\n", ipa_offload_string(ipa));} static DEVICE_ATTR_RO(tx_offload); static struct attribute *ipa_feature_attrs[] = {	&dev_attr_rx_offload.attr,	&dev_attr_tx_offload.attr,	NULL}; const struct attribute_group ipa_feature_attribute_group = {	.name		= "feature",	.attrs		= ipa_feature_attrs,}; static umode_t ipa_endpoint_id_is_visible(struct kobject *kobj,					  struct attribute *attr, int n){	struct ipa *ipa = dev_get_drvdata(kobj_to_dev(kobj));	struct device_attribute *dev_attr;	struct dev_ext_attribute *ea;	bool visible; 	/* An endpoint id attribute is only visible if it's defined */	dev_attr = container_of(attr, struct device_attribute, attr);	ea = container_of(dev_attr, struct dev_ext_attribute, attr); 	visible = !!ipa->name_map[(enum ipa_endpoint_name)(uintptr_t)ea->var]; 	return visible ? attr->mode : 0;} static ssize_t endpoint_id_attr_show(struct device *dev,				     struct device_attribute *attr, char *buf){	struct ipa *ipa = dev_get_drvdata(dev);	struct ipa_endpoint *endpoint;	struct dev_ext_attribute *ea; 	ea = container_of(attr, struct dev_ext_attribute, attr);	endpoint = ipa->name_map[(enum ipa_endpoint_name)(uintptr_t)ea->var]; 	return sysfs_emit(buf, "%u\n", endpoint->endpoint_id);} #define ENDPOINT_ID_ATTR(_n, _endpoint_name)				    \	static struct dev_ext_attribute dev_attr_endpoint_id_ ## _n = {	    \		.attr	= __ATTR(_n, 0444, endpoint_id_attr_show, NULL),    \		.var	= (void *)(_endpoint_name),			    \	} ENDPOINT_ID_ATTR(modem_rx, IPA_ENDPOINT_AP_MODEM_RX);ENDPOINT_ID_ATTR(modem_tx, IPA_ENDPOINT_AP_MODEM_TX); static struct attribute *ipa_endpoint_id_attrs[] = {	&dev_attr_endpoint_id_modem_rx.attr.attr,	&dev_attr_endpoint_id_modem_tx.attr.attr,	NULL}; const struct attribute_group ipa_endpoint_id_attribute_group = {	.name		= "endpoint_id",	.is_visible	= ipa_endpoint_id_is_visible,	.attrs		= ipa_endpoint_id_attrs,}; /* Reuse endpoint ID attributes for the legacy modem endpoint IDs */#define MODEM_ATTR(_n, _endpoint_name)					    \	static struct dev_ext_attribute dev_attr_modem_ ## _n = {	    \		.attr	= __ATTR(_n, 0444, endpoint_id_attr_show, NULL),    \		.var	= (void *)(_endpoint_name),			    \	} MODEM_ATTR(rx_endpoint_id, IPA_ENDPOINT_AP_MODEM_RX);MODEM_ATTR(tx_endpoint_id, IPA_ENDPOINT_AP_MODEM_TX); static struct attribute *ipa_modem_attrs[] = {	&dev_attr_modem_rx_endpoint_id.attr.attr,	&dev_attr_modem_tx_endpoint_id.attr.attr,	NULL,}; const struct attribute_group ipa_modem_attribute_group = {	.name		= "modem",	.attrs		= ipa_modem_attrs,};