LXR linux/drivers/net/ipa/ipa

   1// SPDX-License-Identifier: GPL-2.0
   2
   3/* Copyright (C) 2021 Linaro Ltd. */
   4
   5#include <linux/kernel.h>
   6#include <linux/types.h>
   7#include <linux/device.h>
   8#include <linux/sysfs.h>
   9
  10#include "ipa.h"
  11#include "ipa_version.h"
  12#include "ipa_sysfs.h"
  13
  14static const char *ipa_version_string(struct ipa *ipa)
  15{
  16        switch (ipa->version) {
  17        case IPA_VERSION_3_0:
  18                return "3.0";
  19        case IPA_VERSION_3_1:
  20                return "3.1";
  21        case IPA_VERSION_3_5:
  22                return "3.5";
  23        case IPA_VERSION_3_5_1:
  24                return "3.5.1";
  25        case IPA_VERSION_4_0:
  26                return "4.0";
  27        case IPA_VERSION_4_1:
  28                return "4.1";
  29        case IPA_VERSION_4_2:
  30                return "4.2";
  31        case IPA_VERSION_4_5:
  32                return "4.5";
  33        case IPA_VERSION_4_7:
  34                return "4.7";
  35        case IPA_VERSION_4_9:
  36                return "4.9";
  37        case IPA_VERSION_4_11:
  38                return "4.11";
  39        default:
  40                return "0.0";   /* Won't happen (checked at probe time) */
  41        }
  42}
  43
  44static ssize_t
  45version_show(struct device *dev, struct device_attribute *attr, char *buf)
  46{
  47        struct ipa *ipa = dev_get_drvdata(dev);
  48
  49        return scnprintf(buf, PAGE_SIZE, "%s\n", ipa_version_string(ipa));
  50}
  51
  52static DEVICE_ATTR_RO(version);
  53
  54static struct attribute *ipa_attrs[] = {
  55        &dev_attr_version.attr,
  56        NULL
  57};
  58
  59const struct attribute_group ipa_attribute_group = {
  60        .attrs          = ipa_attrs,
  61};
  62
  63static const char *ipa_offload_string(struct ipa *ipa)
  64{
  65        return ipa->version < IPA_VERSION_4_5 ? "MAPv4" : "MAPv5";
  66}
  67
  68static ssize_t rx_offload_show(struct device *dev,
  69                               struct device_attribute *attr, char *buf)
  70{
  71        struct ipa *ipa = dev_get_drvdata(dev);
  72
  73        return scnprintf(buf, PAGE_SIZE, "%s\n", ipa_offload_string(ipa));
  74}
  75
  76static DEVICE_ATTR_RO(rx_offload);
  77
  78static ssize_t tx_offload_show(struct device *dev,
  79                               struct device_attribute *attr, char *buf)
  80{
  81        struct ipa *ipa = dev_get_drvdata(dev);
  82
  83        return scnprintf(buf, PAGE_SIZE, "%s\n", ipa_offload_string(ipa));
  84}
  85
  86static DEVICE_ATTR_RO(tx_offload);
  87
  88static struct attribute *ipa_feature_attrs[] = {
  89        &dev_attr_rx_offload.attr,
  90        &dev_attr_tx_offload.attr,
  91        NULL
  92};
  93
  94const struct attribute_group ipa_feature_attribute_group = {
  95        .name           = "feature",
  96        .attrs          = ipa_feature_attrs,
  97};
  98
  99static ssize_t
 100ipa_endpoint_id_show(struct ipa *ipa, char *buf, enum ipa_endpoint_name name)
 101{
 102        u32 endpoint_id = ipa->name_map[name]->endpoint_id;
 103
 104        return scnprintf(buf, PAGE_SIZE, "%u\n", endpoint_id);
 105}
 106
 107static ssize_t rx_endpoint_id_show(struct device *dev,
 108                                   struct device_attribute *attr, char *buf)
 109{
 110        struct ipa *ipa = dev_get_drvdata(dev);
 111
 112        return ipa_endpoint_id_show(ipa, buf, IPA_ENDPOINT_AP_MODEM_RX);
 113}
 114
 115static DEVICE_ATTR_RO(rx_endpoint_id);
 116
 117static ssize_t tx_endpoint_id_show(struct device *dev,
 118                                   struct device_attribute *attr, char *buf)
 119{
 120        struct ipa *ipa = dev_get_drvdata(dev);
 121
 122        return ipa_endpoint_id_show(ipa, buf, IPA_ENDPOINT_AP_MODEM_TX);
 123}
 124
 125static DEVICE_ATTR_RO(tx_endpoint_id);
 126
 127static struct attribute *ipa_modem_attrs[] = {
 128        &dev_attr_rx_endpoint_id.attr,
 129        &dev_attr_tx_endpoint_id.attr,
 130        NULL
 131};
 132
 133const struct attribute_group ipa_modem_attribute_group = {
 134        .name           = "modem",
 135        .attrs          = ipa_modem_attrs,
 136};
 137