1 // SPDX-License-Identifier: GPL-2.0-only
3 * QLogic FCoE Offload Driver
4 * Copyright (c) 2016-2018 Cavium Inc.
8 inline bool qedf_is_vport(struct qedf_ctx *qedf)
10 return qedf->lport->vport != NULL;
13 /* Get base qedf for physical port from vport */
14 static struct qedf_ctx *qedf_get_base_qedf(struct qedf_ctx *qedf)
16 struct fc_lport *lport;
17 struct fc_lport *base_lport;
19 if (!(qedf_is_vport(qedf)))
23 base_lport = shost_priv(vport_to_shost(lport->vport));
24 return lport_priv(base_lport);
27 static ssize_t fcoe_mac_show(struct device *dev,
28 struct device_attribute *attr, char *buf)
30 struct fc_lport *lport = shost_priv(class_to_shost(dev));
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);
41 return scnprintf(buf, PAGE_SIZE, "%pM\n", fcoe_mac);
44 static ssize_t fka_period_show(struct device *dev,
45 struct device_attribute *attr, char *buf)
47 struct fc_lport *lport = shost_priv(class_to_shost(dev));
48 struct qedf_ctx *qedf = lport_priv(lport);
51 if (qedf_is_vport(qedf))
52 qedf = qedf_get_base_qedf(qedf);
54 if (qedf->ctlr.sel_fcf)
55 fka_period = qedf->ctlr.sel_fcf->fka_period;
57 return scnprintf(buf, PAGE_SIZE, "%d\n", fka_period);
60 static DEVICE_ATTR_RO(fcoe_mac);
61 static DEVICE_ATTR_RO(fka_period);
63 static struct attribute *qedf_host_attrs[] = {
64 &dev_attr_fcoe_mac.attr,
65 &dev_attr_fka_period.attr,
69 static const struct attribute_group qedf_host_attr_group = {
70 .attrs = qedf_host_attrs
73 const struct attribute_group *qedf_host_groups[] = {
74 &qedf_host_attr_group,
78 extern const struct qed_fcoe_ops *qed_ops;
80 void qedf_capture_grc_dump(struct qedf_ctx *qedf)
82 struct qedf_ctx *base_qedf;
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);
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");
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,
106 qedf_sysfs_read_grcdump(struct file *filep, struct kobject *kobj,
107 struct bin_attribute *ba, char *buf, loff_t off,
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);
115 if (test_bit(QEDF_GRCDUMP_CAPTURE, &qedf->flags)) {
116 ret = memory_read_from_buffer(buf, count, &off,
117 qedf->grcdump, qedf->grcdump_size);
119 QEDF_ERR(&(qedf->dbg_ctx), "GRC Dump not captured!\n");
126 qedf_sysfs_write_grcdump(struct file *filep, struct kobject *kobj,
127 struct bin_attribute *ba, char *buf, loff_t off,
130 struct fc_lport *lport = NULL;
131 struct qedf_ctx *qedf = NULL;
139 lport = shost_priv(dev_to_shost(container_of(kobj,
140 struct device, kobj)));
141 qedf = lport_priv(lport);
144 ret = kstrtol(buf, 10, &reading);
146 QEDF_ERR(&(qedf->dbg_ctx), "Invalid input, err(%d)\n", ret);
152 memset(qedf->grcdump, 0, qedf->grcdump_size);
153 clear_bit(QEDF_GRCDUMP_CAPTURE, &qedf->flags);
156 qedf_capture_grc_dump(qedf);
163 static struct bin_attribute sysfs_grcdump_attr = {
166 .mode = S_IRUSR | S_IWUSR,
169 .read = qedf_sysfs_read_grcdump,
170 .write = qedf_sysfs_write_grcdump,
173 static struct sysfs_bin_attrs bin_file_entries[] = {
174 {"grcdump", &sysfs_grcdump_attr},
178 void qedf_create_sysfs_ctx_attr(struct qedf_ctx *qedf)
180 qedf_create_sysfs_attr(qedf->lport->host, bin_file_entries);
183 void qedf_remove_sysfs_ctx_attr(struct qedf_ctx *qedf)
185 qedf_remove_sysfs_attr(qedf->lport->host, bin_file_entries);