1 // SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0-or-later 2 /* 3 * Copyright 2008 - 2016 Freescale Semiconductor Inc. 4 */ 5 6 #include <linux/init.h> 7 #include <linux/module.h> 8 #include <linux/io.h> 9 #include <linux/of_net.h> 10 #include "dpaa_eth.h" 11 #include "mac.h" 12 13 static ssize_t dpaa_eth_show_addr(struct device *dev, 14 struct device_attribute *attr, char *buf) 15 { 16 struct dpaa_priv *priv = netdev_priv(to_net_dev(dev)); 17 struct mac_device *mac_dev = priv->mac_dev; 18 19 if (mac_dev) 20 return sprintf(buf, "%llx", 21 (unsigned long long)mac_dev->res->start); 22 else 23 return sprintf(buf, "none"); 24 } 25 26 static ssize_t dpaa_eth_show_fqids(struct device *dev, 27 struct device_attribute *attr, char *buf) 28 { 29 struct dpaa_priv *priv = netdev_priv(to_net_dev(dev)); 30 struct dpaa_fq *prev = NULL; 31 char *prevstr = NULL; 32 struct dpaa_fq *tmp; 33 struct dpaa_fq *fq; 34 u32 first_fqid = 0; 35 u32 last_fqid = 0; 36 ssize_t bytes = 0; 37 char *str; 38 39 list_for_each_entry_safe(fq, tmp, &priv->dpaa_fq_list, list) { 40 switch (fq->fq_type) { 41 case FQ_TYPE_RX_DEFAULT: 42 str = "Rx default"; 43 break; 44 case FQ_TYPE_RX_ERROR: 45 str = "Rx error"; 46 break; 47 case FQ_TYPE_RX_PCD: 48 str = "Rx PCD"; 49 break; 50 case FQ_TYPE_TX_CONFIRM: 51 str = "Tx default confirmation"; 52 break; 53 case FQ_TYPE_TX_CONF_MQ: 54 str = "Tx confirmation (mq)"; 55 break; 56 case FQ_TYPE_TX_ERROR: 57 str = "Tx error"; 58 break; 59 case FQ_TYPE_TX: 60 str = "Tx"; 61 break; 62 default: 63 str = "Unknown"; 64 } 65 66 if (prev && (abs(fq->fqid - prev->fqid) != 1 || 67 str != prevstr)) { 68 if (last_fqid == first_fqid) 69 bytes += sprintf(buf + bytes, 70 "%s: %d\n", prevstr, prev->fqid); 71 else 72 bytes += sprintf(buf + bytes, 73 "%s: %d - %d\n", prevstr, 74 first_fqid, last_fqid); 75 } 76 77 if (prev && abs(fq->fqid - prev->fqid) == 1 && 78 str == prevstr) { 79 last_fqid = fq->fqid; 80 } else { 81 first_fqid = fq->fqid; 82 last_fqid = fq->fqid; 83 } 84 85 prev = fq; 86 prevstr = str; 87 } 88 89 if (prev) { 90 if (last_fqid == first_fqid) 91 bytes += sprintf(buf + bytes, "%s: %d\n", prevstr, 92 prev->fqid); 93 else 94 bytes += sprintf(buf + bytes, "%s: %d - %d\n", prevstr, 95 first_fqid, last_fqid); 96 } 97 98 return bytes; 99 } 100 101 static ssize_t dpaa_eth_show_bpids(struct device *dev, 102 struct device_attribute *attr, char *buf) 103 { 104 struct dpaa_priv *priv = netdev_priv(to_net_dev(dev)); 105 ssize_t bytes = 0; 106 107 bytes += snprintf(buf + bytes, PAGE_SIZE - bytes, "%u\n", 108 priv->dpaa_bp->bpid); 109 110 return bytes; 111 } 112 113 static struct device_attribute dpaa_eth_attrs[] = { 114 __ATTR(device_addr, 0444, dpaa_eth_show_addr, NULL), 115 __ATTR(fqids, 0444, dpaa_eth_show_fqids, NULL), 116 __ATTR(bpids, 0444, dpaa_eth_show_bpids, NULL), 117 }; 118 119 void dpaa_eth_sysfs_init(struct device *dev) 120 { 121 int i; 122 123 for (i = 0; i < ARRAY_SIZE(dpaa_eth_attrs); i++) 124 if (device_create_file(dev, &dpaa_eth_attrs[i])) { 125 dev_err(dev, "Error creating sysfs file\n"); 126 while (i > 0) 127 device_remove_file(dev, &dpaa_eth_attrs[--i]); 128 return; 129 } 130 } 131 132 void dpaa_eth_sysfs_remove(struct device *dev) 133 { 134 int i; 135 136 for (i = 0; i < ARRAY_SIZE(dpaa_eth_attrs); i++) 137 device_remove_file(dev, &dpaa_eth_attrs[i]); 138 } 139