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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * QLogic FCoE Offload Driver4 * Copyright (c) 2016-2018 Cavium Inc.5 */6#include "qedf.h"7 8inline bool qedf_is_vport(struct qedf_ctx *qedf)9{10 return qedf->lport->vport != NULL;11}12 13/* Get base qedf for physical port from vport */14static struct qedf_ctx *qedf_get_base_qedf(struct qedf_ctx *qedf)15{16 struct fc_lport *lport;17 struct fc_lport *base_lport;18 19 if (!(qedf_is_vport(qedf)))20 return NULL;21 22 lport = qedf->lport;23 base_lport = shost_priv(vport_to_shost(lport->vport));24 return lport_priv(base_lport);25}26 27static ssize_t fcoe_mac_show(struct device *dev,28 struct device_attribute *attr, char *buf)29{30 struct fc_lport *lport = shost_priv(class_to_shost(dev));31 u32 port_id;32 u8 lport_src_id[3];33 u8 fcoe_mac[6];34 35 port_id = fc_host_port_id(lport->host);36 lport_src_id[2] = (port_id & 0x000000FF);37 lport_src_id[1] = (port_id & 0x0000FF00) >> 8;38 lport_src_id[0] = (port_id & 0x00FF0000) >> 16;39 fc_fcoe_set_mac(fcoe_mac, lport_src_id);40 41 return scnprintf(buf, PAGE_SIZE, "%pM\n", fcoe_mac);42}43 44static ssize_t fka_period_show(struct device *dev,45 struct device_attribute *attr, char *buf)46{47 struct fc_lport *lport = shost_priv(class_to_shost(dev));48 struct qedf_ctx *qedf = lport_priv(lport);49 int fka_period = -1;50 51 if (qedf_is_vport(qedf))52 qedf = qedf_get_base_qedf(qedf);53 54 if (qedf->ctlr.sel_fcf)55 fka_period = qedf->ctlr.sel_fcf->fka_period;56 57 return scnprintf(buf, PAGE_SIZE, "%d\n", fka_period);58}59 60static DEVICE_ATTR_RO(fcoe_mac);61static DEVICE_ATTR_RO(fka_period);62 63static struct attribute *qedf_host_attrs[] = {64 &dev_attr_fcoe_mac.attr,65 &dev_attr_fka_period.attr,66 NULL,67};68 69static const struct attribute_group qedf_host_attr_group = {70 .attrs = qedf_host_attrs71};72 73const struct attribute_group *qedf_host_groups[] = {74 &qedf_host_attr_group,75 NULL76};77 78extern const struct qed_fcoe_ops *qed_ops;79 80void qedf_capture_grc_dump(struct qedf_ctx *qedf)81{82 struct qedf_ctx *base_qedf;83 84 /* Make sure we use the base qedf to take the GRC dump */85 if (qedf_is_vport(qedf))86 base_qedf = qedf_get_base_qedf(qedf);87 else88 base_qedf = qedf;89 90 if (test_bit(QEDF_GRCDUMP_CAPTURE, &base_qedf->flags)) {91 QEDF_INFO(&(base_qedf->dbg_ctx), QEDF_LOG_INFO,92 "GRC Dump already captured.\n");93 return;94 }95 96 97 qedf_get_grc_dump(base_qedf->cdev, qed_ops->common,98 &base_qedf->grcdump, &base_qedf->grcdump_size);99 QEDF_ERR(&(base_qedf->dbg_ctx), "GRC Dump captured.\n");100 set_bit(QEDF_GRCDUMP_CAPTURE, &base_qedf->flags);101 qedf_uevent_emit(base_qedf->lport->host, QEDF_UEVENT_CODE_GRCDUMP,102 NULL);103}104 105static ssize_t106qedf_sysfs_read_grcdump(struct file *filep, struct kobject *kobj,107 struct bin_attribute *ba, char *buf, loff_t off,108 size_t count)109{110 ssize_t ret = 0;111 struct fc_lport *lport = shost_priv(dev_to_shost(container_of(kobj,112 struct device, kobj)));113 struct qedf_ctx *qedf = lport_priv(lport);114 115 if (test_bit(QEDF_GRCDUMP_CAPTURE, &qedf->flags)) {116 ret = memory_read_from_buffer(buf, count, &off,117 qedf->grcdump, qedf->grcdump_size);118 } else {119 QEDF_ERR(&(qedf->dbg_ctx), "GRC Dump not captured!\n");120 }121 122 return ret;123}124 125static ssize_t126qedf_sysfs_write_grcdump(struct file *filep, struct kobject *kobj,127 struct bin_attribute *ba, char *buf, loff_t off,128 size_t count)129{130 struct fc_lport *lport = NULL;131 struct qedf_ctx *qedf = NULL;132 long reading;133 int ret = 0;134 135 if (off != 0)136 return ret;137 138 139 lport = shost_priv(dev_to_shost(container_of(kobj,140 struct device, kobj)));141 qedf = lport_priv(lport);142 143 buf[1] = 0;144 ret = kstrtol(buf, 10, &reading);145 if (ret) {146 QEDF_ERR(&(qedf->dbg_ctx), "Invalid input, err(%d)\n", ret);147 return ret;148 }149 150 switch (reading) {151 case 0:152 memset(qedf->grcdump, 0, qedf->grcdump_size);153 clear_bit(QEDF_GRCDUMP_CAPTURE, &qedf->flags);154 break;155 case 1:156 qedf_capture_grc_dump(qedf);157 break;158 }159 160 return count;161}162 163static struct bin_attribute sysfs_grcdump_attr = {164 .attr = {165 .name = "grcdump",166 .mode = S_IRUSR | S_IWUSR,167 },168 .size = 0,169 .read = qedf_sysfs_read_grcdump,170 .write = qedf_sysfs_write_grcdump,171};172 173static struct sysfs_bin_attrs bin_file_entries[] = {174 {"grcdump", &sysfs_grcdump_attr},175 {NULL},176};177 178void qedf_create_sysfs_ctx_attr(struct qedf_ctx *qedf)179{180 qedf_create_sysfs_attr(qedf->lport->host, bin_file_entries);181}182 183void qedf_remove_sysfs_ctx_attr(struct qedf_ctx *qedf)184{185 qedf_remove_sysfs_attr(qedf->lport->host, bin_file_entries);186}187