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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 | // SPDX-License-Identifier: GPL-2.0 /* Copyright (C) 2021-2022 Linaro Ltd. */ #include <linux/kernel.h> #include <linux/types.h> #include <linux/device.h> #include <linux/sysfs.h> #include "ipa.h" #include "ipa_version.h" #include "ipa_sysfs.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"; default: return "0.0"; /* Won't happen (checked at probe time) */ } } static ssize_t version_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, }; |