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linux-sg2042/drivers/scsi/qla2xxx/qla_attr.c

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/*
* QLOGIC LINUX SOFTWARE
*
* QLogic ISP2x00 device driver for Linux 2.6.x
* Copyright (C) 2003-2005 QLogic Corporation
* (www.qlogic.com)
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2, or (at your option) any
* later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
*/
#include "qla_def.h"
#include <linux/vmalloc.h>
#include <scsi/scsi_transport_fc.h>
/* SYSFS attributes --------------------------------------------------------- */
static ssize_t
qla2x00_sysfs_read_fw_dump(struct kobject *kobj, char *buf, loff_t off,
size_t count)
{
struct scsi_qla_host *ha = to_qla_host(dev_to_shost(container_of(kobj,
struct device, kobj)));
if (ha->fw_dump_reading == 0)
return 0;
if (off > ha->fw_dump_buffer_len)
return 0;
if (off + count > ha->fw_dump_buffer_len)
count = ha->fw_dump_buffer_len - off;
memcpy(buf, &ha->fw_dump_buffer[off], count);
return (count);
}
static ssize_t
qla2x00_sysfs_write_fw_dump(struct kobject *kobj, char *buf, loff_t off,
size_t count)
{
struct scsi_qla_host *ha = to_qla_host(dev_to_shost(container_of(kobj,
struct device, kobj)));
int reading;
uint32_t dump_size;
if (off != 0)
return (0);
reading = simple_strtol(buf, NULL, 10);
switch (reading) {
case 0:
if (ha->fw_dump_reading == 1) {
qla_printk(KERN_INFO, ha,
"Firmware dump cleared on (%ld).\n",
ha->host_no);
vfree(ha->fw_dump_buffer);
if (!IS_QLA24XX(ha) && !IS_QLA25XX(ha))
free_pages((unsigned long)ha->fw_dump,
ha->fw_dump_order);
ha->fw_dump_reading = 0;
ha->fw_dump_buffer = NULL;
ha->fw_dump = NULL;
ha->fw_dumped = 0;
}
break;
case 1:
if ((ha->fw_dump || ha->fw_dumped) && !ha->fw_dump_reading) {
ha->fw_dump_reading = 1;
if (IS_QLA24XX(ha) || IS_QLA25XX(ha))
dump_size = FW_DUMP_SIZE_24XX;
else {
dump_size = FW_DUMP_SIZE_1M;
if (ha->fw_memory_size < 0x20000)
dump_size = FW_DUMP_SIZE_128K;
else if (ha->fw_memory_size < 0x80000)
dump_size = FW_DUMP_SIZE_512K;
}
ha->fw_dump_buffer = (char *)vmalloc(dump_size);
if (ha->fw_dump_buffer == NULL) {
qla_printk(KERN_WARNING, ha,
"Unable to allocate memory for firmware "
"dump buffer (%d).\n", dump_size);
ha->fw_dump_reading = 0;
return (count);
}
qla_printk(KERN_INFO, ha,
"Firmware dump ready for read on (%ld).\n",
ha->host_no);
memset(ha->fw_dump_buffer, 0, dump_size);
ha->isp_ops.ascii_fw_dump(ha);
ha->fw_dump_buffer_len = strlen(ha->fw_dump_buffer);
}
break;
}
return (count);
}
static struct bin_attribute sysfs_fw_dump_attr = {
.attr = {
.name = "fw_dump",
.mode = S_IRUSR | S_IWUSR,
.owner = THIS_MODULE,
},
.size = 0,
.read = qla2x00_sysfs_read_fw_dump,
.write = qla2x00_sysfs_write_fw_dump,
};
static ssize_t
qla2x00_sysfs_read_nvram(struct kobject *kobj, char *buf, loff_t off,
size_t count)
{
struct scsi_qla_host *ha = to_qla_host(dev_to_shost(container_of(kobj,
struct device, kobj)));
unsigned long flags;
if (!capable(CAP_SYS_ADMIN) || off != 0 || count != ha->nvram_size)
return 0;
/* Read NVRAM. */
spin_lock_irqsave(&ha->hardware_lock, flags);
ha->isp_ops.read_nvram(ha, (uint8_t *)buf, ha->nvram_base,
ha->nvram_size);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
return (count);
}
static ssize_t
qla2x00_sysfs_write_nvram(struct kobject *kobj, char *buf, loff_t off,
size_t count)
{
struct scsi_qla_host *ha = to_qla_host(dev_to_shost(container_of(kobj,
struct device, kobj)));
unsigned long flags;
uint16_t cnt;
if (!capable(CAP_SYS_ADMIN) || off != 0 || count != ha->nvram_size)
return 0;
/* Checksum NVRAM. */
if (IS_QLA24XX(ha) || IS_QLA25XX(ha)) {
uint32_t *iter;
uint32_t chksum;
iter = (uint32_t *)buf;
chksum = 0;
for (cnt = 0; cnt < ((count >> 2) - 1); cnt++)
chksum += le32_to_cpu(*iter++);
chksum = ~chksum + 1;
*iter = cpu_to_le32(chksum);
} else {
uint8_t *iter;
uint8_t chksum;
iter = (uint8_t *)buf;
chksum = 0;
for (cnt = 0; cnt < count - 1; cnt++)
chksum += *iter++;
chksum = ~chksum + 1;
*iter = chksum;
}
/* Write NVRAM. */
spin_lock_irqsave(&ha->hardware_lock, flags);
ha->isp_ops.write_nvram(ha, (uint8_t *)buf, ha->nvram_base, count);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
return (count);
}
static struct bin_attribute sysfs_nvram_attr = {
.attr = {
.name = "nvram",
.mode = S_IRUSR | S_IWUSR,
.owner = THIS_MODULE,
},
.size = 0,
.read = qla2x00_sysfs_read_nvram,
.write = qla2x00_sysfs_write_nvram,
};
void
qla2x00_alloc_sysfs_attr(scsi_qla_host_t *ha)
{
struct Scsi_Host *host = ha->host;
sysfs_create_bin_file(&host->shost_gendev.kobj, &sysfs_fw_dump_attr);
sysfs_nvram_attr.size = ha->nvram_size;
sysfs_create_bin_file(&host->shost_gendev.kobj, &sysfs_nvram_attr);
}
void
qla2x00_free_sysfs_attr(scsi_qla_host_t *ha)
{
struct Scsi_Host *host = ha->host;
sysfs_remove_bin_file(&host->shost_gendev.kobj, &sysfs_fw_dump_attr);
sysfs_remove_bin_file(&host->shost_gendev.kobj, &sysfs_nvram_attr);
}
/* Scsi_Host attributes. */
static ssize_t
qla2x00_drvr_version_show(struct class_device *cdev, char *buf)
{
return snprintf(buf, PAGE_SIZE, "%s\n", qla2x00_version_str);
}
static ssize_t
qla2x00_fw_version_show(struct class_device *cdev, char *buf)
{
scsi_qla_host_t *ha = to_qla_host(class_to_shost(cdev));
char fw_str[30];
return snprintf(buf, PAGE_SIZE, "%s\n",
ha->isp_ops.fw_version_str(ha, fw_str));
}
static ssize_t
qla2x00_serial_num_show(struct class_device *cdev, char *buf)
{
scsi_qla_host_t *ha = to_qla_host(class_to_shost(cdev));
uint32_t sn;
sn = ((ha->serial0 & 0x1f) << 16) | (ha->serial2 << 8) | ha->serial1;
return snprintf(buf, PAGE_SIZE, "%c%05d\n", 'A' + sn / 100000,
sn % 100000);
}
static ssize_t
qla2x00_isp_name_show(struct class_device *cdev, char *buf)
{
scsi_qla_host_t *ha = to_qla_host(class_to_shost(cdev));
return snprintf(buf, PAGE_SIZE, "%s\n", ha->brd_info->isp_name);
}
static ssize_t
qla2x00_isp_id_show(struct class_device *cdev, char *buf)
{
scsi_qla_host_t *ha = to_qla_host(class_to_shost(cdev));
return snprintf(buf, PAGE_SIZE, "%04x %04x %04x %04x\n",
ha->product_id[0], ha->product_id[1], ha->product_id[2],
ha->product_id[3]);
}
static ssize_t
qla2x00_model_name_show(struct class_device *cdev, char *buf)
{
scsi_qla_host_t *ha = to_qla_host(class_to_shost(cdev));
return snprintf(buf, PAGE_SIZE, "%s\n", ha->model_number);
}
static ssize_t
qla2x00_model_desc_show(struct class_device *cdev, char *buf)
{
scsi_qla_host_t *ha = to_qla_host(class_to_shost(cdev));
return snprintf(buf, PAGE_SIZE, "%s\n",
ha->model_desc ? ha->model_desc: "");
}
static ssize_t
qla2x00_pci_info_show(struct class_device *cdev, char *buf)
{
scsi_qla_host_t *ha = to_qla_host(class_to_shost(cdev));
char pci_info[30];
return snprintf(buf, PAGE_SIZE, "%s\n",
ha->isp_ops.pci_info_str(ha, pci_info));
}
static ssize_t
qla2x00_state_show(struct class_device *cdev, char *buf)
{
scsi_qla_host_t *ha = to_qla_host(class_to_shost(cdev));
int len = 0;
if (atomic_read(&ha->loop_state) == LOOP_DOWN ||
atomic_read(&ha->loop_state) == LOOP_DEAD)
len = snprintf(buf, PAGE_SIZE, "Link Down\n");
else if (atomic_read(&ha->loop_state) != LOOP_READY ||
test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags) ||
test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags))
len = snprintf(buf, PAGE_SIZE, "Unknown Link State\n");
else {
len = snprintf(buf, PAGE_SIZE, "Link Up - ");
switch (ha->current_topology) {
case ISP_CFG_NL:
len += snprintf(buf + len, PAGE_SIZE-len, "Loop\n");
break;
case ISP_CFG_FL:
len += snprintf(buf + len, PAGE_SIZE-len, "FL_Port\n");
break;
case ISP_CFG_N:
len += snprintf(buf + len, PAGE_SIZE-len,
"N_Port to N_Port\n");
break;
case ISP_CFG_F:
len += snprintf(buf + len, PAGE_SIZE-len, "F_Port\n");
break;
default:
len += snprintf(buf + len, PAGE_SIZE-len, "Loop\n");
break;
}
}
return len;
}
static CLASS_DEVICE_ATTR(driver_version, S_IRUGO, qla2x00_drvr_version_show,
NULL);
static CLASS_DEVICE_ATTR(fw_version, S_IRUGO, qla2x00_fw_version_show, NULL);
static CLASS_DEVICE_ATTR(serial_num, S_IRUGO, qla2x00_serial_num_show, NULL);
static CLASS_DEVICE_ATTR(isp_name, S_IRUGO, qla2x00_isp_name_show, NULL);
static CLASS_DEVICE_ATTR(isp_id, S_IRUGO, qla2x00_isp_id_show, NULL);
static CLASS_DEVICE_ATTR(model_name, S_IRUGO, qla2x00_model_name_show, NULL);
static CLASS_DEVICE_ATTR(model_desc, S_IRUGO, qla2x00_model_desc_show, NULL);
static CLASS_DEVICE_ATTR(pci_info, S_IRUGO, qla2x00_pci_info_show, NULL);
static CLASS_DEVICE_ATTR(state, S_IRUGO, qla2x00_state_show, NULL);
struct class_device_attribute *qla2x00_host_attrs[] = {
&class_device_attr_driver_version,
&class_device_attr_fw_version,
&class_device_attr_serial_num,
&class_device_attr_isp_name,
&class_device_attr_isp_id,
&class_device_attr_model_name,
&class_device_attr_model_desc,
&class_device_attr_pci_info,
&class_device_attr_state,
NULL,
};
/* Host attributes. */
static void
qla2x00_get_host_port_id(struct Scsi_Host *shost)
{
scsi_qla_host_t *ha = to_qla_host(shost);
fc_host_port_id(shost) = ha->d_id.b.domain << 16 |
ha->d_id.b.area << 8 | ha->d_id.b.al_pa;
}
static void
qla2x00_get_starget_node_name(struct scsi_target *starget)
{
struct Scsi_Host *host = dev_to_shost(starget->dev.parent);
scsi_qla_host_t *ha = to_qla_host(host);
fc_port_t *fcport;
u64 node_name = 0;
list_for_each_entry(fcport, &ha->fcports, list) {
if (starget->id == fcport->os_target_id) {
node_name = wwn_to_u64(fcport->node_name);
break;
}
}
fc_starget_node_name(starget) = node_name;
}
static void
qla2x00_get_starget_port_name(struct scsi_target *starget)
{
struct Scsi_Host *host = dev_to_shost(starget->dev.parent);
scsi_qla_host_t *ha = to_qla_host(host);
fc_port_t *fcport;
u64 port_name = 0;
list_for_each_entry(fcport, &ha->fcports, list) {
if (starget->id == fcport->os_target_id) {
port_name = wwn_to_u64(fcport->port_name);
break;
}
}
fc_starget_port_name(starget) = port_name;
}
static void
qla2x00_get_starget_port_id(struct scsi_target *starget)
{
struct Scsi_Host *host = dev_to_shost(starget->dev.parent);
scsi_qla_host_t *ha = to_qla_host(host);
fc_port_t *fcport;
uint32_t port_id = ~0U;
list_for_each_entry(fcport, &ha->fcports, list) {
if (starget->id == fcport->os_target_id) {
port_id = fcport->d_id.b.domain << 16 |
fcport->d_id.b.area << 8 | fcport->d_id.b.al_pa;
break;
}
}
fc_starget_port_id(starget) = port_id;
}
static void
qla2x00_get_rport_loss_tmo(struct fc_rport *rport)
{
struct Scsi_Host *host = rport_to_shost(rport);
scsi_qla_host_t *ha = to_qla_host(host);
rport->dev_loss_tmo = ha->port_down_retry_count + 5;
}
static void
qla2x00_set_rport_loss_tmo(struct fc_rport *rport, uint32_t timeout)
{
struct Scsi_Host *host = rport_to_shost(rport);
scsi_qla_host_t *ha = to_qla_host(host);
if (timeout)
ha->port_down_retry_count = timeout;
else
ha->port_down_retry_count = 1;
rport->dev_loss_tmo = ha->port_down_retry_count + 5;
}
struct fc_function_template qla2xxx_transport_functions = {
.show_host_node_name = 1,
.show_host_port_name = 1,
.show_host_supported_classes = 1,
.get_host_port_id = qla2x00_get_host_port_id,
.show_host_port_id = 1,
.dd_fcrport_size = sizeof(struct fc_port *),
.show_rport_supported_classes = 1,
.get_starget_node_name = qla2x00_get_starget_node_name,
.show_starget_node_name = 1,
.get_starget_port_name = qla2x00_get_starget_port_name,
.show_starget_port_name = 1,
.get_starget_port_id = qla2x00_get_starget_port_id,
.show_starget_port_id = 1,
.get_rport_dev_loss_tmo = qla2x00_get_rport_loss_tmo,
.set_rport_dev_loss_tmo = qla2x00_set_rport_loss_tmo,
.show_rport_dev_loss_tmo = 1,
};
void
qla2x00_init_host_attr(scsi_qla_host_t *ha)
{
fc_host_node_name(ha->host) = wwn_to_u64(ha->init_cb->node_name);
fc_host_port_name(ha->host) = wwn_to_u64(ha->init_cb->port_name);
fc_host_supported_classes(ha->host) = FC_COS_CLASS3;
}
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