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/*
* QLogic FCoE Offload Driver
* Copyright (c) 2016 Cavium Inc.
*
* This software is available under the terms of the GNU General Public License
* (GPL) Version 2, available from the file COPYING in the main directory of
* this source tree.
*/
#include "qedf.h"
static ssize_t
qedf_fcoe_mac_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct fc_lport *lport = shost_priv(class_to_shost(dev));
u32 port_id;
u8 lport_src_id[3];
u8 fcoe_mac[6];
port_id = fc_host_port_id(lport->host);
lport_src_id[2] = (port_id & 0x000000FF);
lport_src_id[1] = (port_id & 0x0000FF00) >> 8;
lport_src_id[0] = (port_id & 0x00FF0000) >> 16;
fc_fcoe_set_mac(fcoe_mac, lport_src_id);
return scnprintf(buf, PAGE_SIZE, "%pM\n", fcoe_mac);
}
static DEVICE_ATTR(fcoe_mac, S_IRUGO, qedf_fcoe_mac_show, NULL);
struct device_attribute *qedf_host_attrs[] = {
&dev_attr_fcoe_mac,
NULL,
};
extern const struct qed_fcoe_ops *qed_ops;
inline bool qedf_is_vport(struct qedf_ctx *qedf)
{
return (!(qedf->lport->vport == NULL));
}
/* Get base qedf for physical port from vport */
static struct qedf_ctx *qedf_get_base_qedf(struct qedf_ctx *qedf)
{
struct fc_lport *lport;
struct fc_lport *base_lport;
if (!(qedf_is_vport(qedf)))
return NULL;
lport = qedf->lport;
base_lport = shost_priv(vport_to_shost(lport->vport));
return (struct qedf_ctx *)(lport_priv(base_lport));
}
void qedf_capture_grc_dump(struct qedf_ctx *qedf)
{
struct qedf_ctx *base_qedf;
/* Make sure we use the base qedf to take the GRC dump */
if (qedf_is_vport(qedf))
base_qedf = qedf_get_base_qedf(qedf);
else
base_qedf = qedf;
if (test_bit(QEDF_GRCDUMP_CAPTURE, &base_qedf->flags)) {
QEDF_INFO(&(base_qedf->dbg_ctx), QEDF_LOG_INFO,
"GRC Dump already captured.\n");
return;
}
qedf_get_grc_dump(base_qedf->cdev, qed_ops->common,
&base_qedf->grcdump, &base_qedf->grcdump_size);
QEDF_ERR(&(base_qedf->dbg_ctx), "GRC Dump captured.\n");
set_bit(QEDF_GRCDUMP_CAPTURE, &base_qedf->flags);
qedf_uevent_emit(base_qedf->lport->host, QEDF_UEVENT_CODE_GRCDUMP,
NULL);
}
static ssize_t
qedf_sysfs_read_grcdump(struct file *filep, struct kobject *kobj,
struct bin_attribute *ba, char *buf, loff_t off,
size_t count)
{
ssize_t ret = 0;
struct fc_lport *lport = shost_priv(dev_to_shost(container_of(kobj,
struct device, kobj)));
struct qedf_ctx *qedf = lport_priv(lport);
if (test_bit(QEDF_GRCDUMP_CAPTURE, &qedf->flags)) {
ret = memory_read_from_buffer(buf, count, &off,
qedf->grcdump, qedf->grcdump_size);
} else {
QEDF_ERR(&(qedf->dbg_ctx), "GRC Dump not captured!\n");
}
return ret;
}
static ssize_t
qedf_sysfs_write_grcdump(struct file *filep, struct kobject *kobj,
struct bin_attribute *ba, char *buf, loff_t off,
size_t count)
{
struct fc_lport *lport = NULL;
struct qedf_ctx *qedf = NULL;
long reading;
int ret = 0;
char msg[40];
if (off != 0)
return ret;
lport = shost_priv(dev_to_shost(container_of(kobj,
struct device, kobj)));
qedf = lport_priv(lport);
buf[1] = 0;
ret = kstrtol(buf, 10, &reading);
if (ret) {
QEDF_ERR(&(qedf->dbg_ctx), "Invalid input, err(%d)\n", ret);
return ret;
}
memset(msg, 0, sizeof(msg));
switch (reading) {
case 0:
memset(qedf->grcdump, 0, qedf->grcdump_size);
clear_bit(QEDF_GRCDUMP_CAPTURE, &qedf->flags);
break;
case 1:
qedf_capture_grc_dump(qedf);
break;
}
return count;
}
static struct bin_attribute sysfs_grcdump_attr = {
.attr = {
.name = "grcdump",
.mode = S_IRUSR | S_IWUSR,
},
.size = 0,
.read = qedf_sysfs_read_grcdump,
.write = qedf_sysfs_write_grcdump,
};
static struct sysfs_bin_attrs bin_file_entries[] = {
{"grcdump", &sysfs_grcdump_attr},
{NULL},
};
void qedf_create_sysfs_ctx_attr(struct qedf_ctx *qedf)
{
qedf_create_sysfs_attr(qedf->lport->host, bin_file_entries);
}
void qedf_remove_sysfs_ctx_attr(struct qedf_ctx *qedf)
{
qedf_remove_sysfs_attr(qedf->lport->host, bin_file_entries);
}
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