mirror of https://gitee.com/openkylin/linux.git
405 lines
13 KiB
C
405 lines
13 KiB
C
/*
|
|
*******************************************************************************
|
|
** O.S : Linux
|
|
** FILE NAME : arcmsr_attr.c
|
|
** BY : Nick Cheng
|
|
** Description: attributes exported to sysfs and device host
|
|
*******************************************************************************
|
|
** Copyright (C) 2002 - 2005, Areca Technology Corporation All rights reserved
|
|
**
|
|
** Web site: www.areca.com.tw
|
|
** E-mail: support@areca.com.tw
|
|
**
|
|
** This program is free software; you can redistribute it and/or modify
|
|
** it under the terms of the GNU General Public License version 2 as
|
|
** published by the Free Software Foundation.
|
|
** 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.
|
|
*******************************************************************************
|
|
** Redistribution and use in source and binary forms, with or without
|
|
** modification, are permitted provided that the following conditions
|
|
** are met:
|
|
** 1. Redistributions of source code must retain the above copyright
|
|
** notice, this list of conditions and the following disclaimer.
|
|
** 2. Redistributions in binary form must reproduce the above copyright
|
|
** notice, this list of conditions and the following disclaimer in the
|
|
** documentation and/or other materials provided with the distribution.
|
|
** 3. The name of the author may not be used to endorse or promote products
|
|
** derived from this software without specific prior written permission.
|
|
**
|
|
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES(INCLUDING,BUT
|
|
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION)HOWEVER CAUSED AND ON ANY
|
|
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
** (INCLUDING NEGLIGENCE OR OTHERWISE)ARISING IN ANY WAY OUT OF THE USE OF
|
|
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*******************************************************************************
|
|
** For history of changes, see Documentation/scsi/ChangeLog.arcmsr
|
|
** Firmware Specification, see Documentation/scsi/arcmsr_spec.txt
|
|
*******************************************************************************
|
|
*/
|
|
#include <linux/module.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/circ_buf.h>
|
|
|
|
#include <scsi/scsi_cmnd.h>
|
|
#include <scsi/scsi_device.h>
|
|
#include <scsi/scsi_host.h>
|
|
#include <scsi/scsi_transport.h>
|
|
#include "arcmsr.h"
|
|
|
|
struct device_attribute *arcmsr_host_attrs[];
|
|
|
|
static ssize_t arcmsr_sysfs_iop_message_read(struct file *filp,
|
|
struct kobject *kobj,
|
|
struct bin_attribute *bin,
|
|
char *buf, loff_t off,
|
|
size_t count)
|
|
{
|
|
struct device *dev = container_of(kobj,struct device,kobj);
|
|
struct Scsi_Host *host = class_to_shost(dev);
|
|
struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
|
|
uint8_t *ptmpQbuffer;
|
|
int32_t allxfer_len = 0;
|
|
unsigned long flags;
|
|
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
return -EACCES;
|
|
|
|
/* do message unit read. */
|
|
ptmpQbuffer = (uint8_t *)buf;
|
|
spin_lock_irqsave(&acb->rqbuffer_lock, flags);
|
|
if (acb->rqbuf_getIndex != acb->rqbuf_putIndex) {
|
|
unsigned int tail = acb->rqbuf_getIndex;
|
|
unsigned int head = acb->rqbuf_putIndex;
|
|
unsigned int cnt_to_end = CIRC_CNT_TO_END(head, tail, ARCMSR_MAX_QBUFFER);
|
|
|
|
allxfer_len = CIRC_CNT(head, tail, ARCMSR_MAX_QBUFFER);
|
|
if (allxfer_len > ARCMSR_API_DATA_BUFLEN)
|
|
allxfer_len = ARCMSR_API_DATA_BUFLEN;
|
|
|
|
if (allxfer_len <= cnt_to_end)
|
|
memcpy(ptmpQbuffer, acb->rqbuffer + tail, allxfer_len);
|
|
else {
|
|
memcpy(ptmpQbuffer, acb->rqbuffer + tail, cnt_to_end);
|
|
memcpy(ptmpQbuffer + cnt_to_end, acb->rqbuffer, allxfer_len - cnt_to_end);
|
|
}
|
|
acb->rqbuf_getIndex = (acb->rqbuf_getIndex + allxfer_len) % ARCMSR_MAX_QBUFFER;
|
|
}
|
|
if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
|
|
struct QBUFFER __iomem *prbuffer;
|
|
acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
|
|
prbuffer = arcmsr_get_iop_rqbuffer(acb);
|
|
if (arcmsr_Read_iop_rqbuffer_data(acb, prbuffer) == 0)
|
|
acb->acb_flags |= ACB_F_IOPDATA_OVERFLOW;
|
|
}
|
|
spin_unlock_irqrestore(&acb->rqbuffer_lock, flags);
|
|
return allxfer_len;
|
|
}
|
|
|
|
static ssize_t arcmsr_sysfs_iop_message_write(struct file *filp,
|
|
struct kobject *kobj,
|
|
struct bin_attribute *bin,
|
|
char *buf, loff_t off,
|
|
size_t count)
|
|
{
|
|
struct device *dev = container_of(kobj,struct device,kobj);
|
|
struct Scsi_Host *host = class_to_shost(dev);
|
|
struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
|
|
int32_t user_len, cnt2end;
|
|
uint8_t *pQbuffer, *ptmpuserbuffer;
|
|
unsigned long flags;
|
|
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
return -EACCES;
|
|
if (count > ARCMSR_API_DATA_BUFLEN)
|
|
return -EINVAL;
|
|
/* do message unit write. */
|
|
ptmpuserbuffer = (uint8_t *)buf;
|
|
user_len = (int32_t)count;
|
|
spin_lock_irqsave(&acb->wqbuffer_lock, flags);
|
|
if (acb->wqbuf_putIndex != acb->wqbuf_getIndex) {
|
|
arcmsr_write_ioctldata2iop(acb);
|
|
spin_unlock_irqrestore(&acb->wqbuffer_lock, flags);
|
|
return 0; /*need retry*/
|
|
} else {
|
|
pQbuffer = &acb->wqbuffer[acb->wqbuf_putIndex];
|
|
cnt2end = ARCMSR_MAX_QBUFFER - acb->wqbuf_putIndex;
|
|
if (user_len > cnt2end) {
|
|
memcpy(pQbuffer, ptmpuserbuffer, cnt2end);
|
|
ptmpuserbuffer += cnt2end;
|
|
user_len -= cnt2end;
|
|
acb->wqbuf_putIndex = 0;
|
|
pQbuffer = acb->wqbuffer;
|
|
}
|
|
memcpy(pQbuffer, ptmpuserbuffer, user_len);
|
|
acb->wqbuf_putIndex += user_len;
|
|
acb->wqbuf_putIndex %= ARCMSR_MAX_QBUFFER;
|
|
if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_CLEARED) {
|
|
acb->acb_flags &=
|
|
~ACB_F_MESSAGE_WQBUFFER_CLEARED;
|
|
arcmsr_write_ioctldata2iop(acb);
|
|
}
|
|
spin_unlock_irqrestore(&acb->wqbuffer_lock, flags);
|
|
return count;
|
|
}
|
|
}
|
|
|
|
static ssize_t arcmsr_sysfs_iop_message_clear(struct file *filp,
|
|
struct kobject *kobj,
|
|
struct bin_attribute *bin,
|
|
char *buf, loff_t off,
|
|
size_t count)
|
|
{
|
|
struct device *dev = container_of(kobj,struct device,kobj);
|
|
struct Scsi_Host *host = class_to_shost(dev);
|
|
struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
|
|
uint8_t *pQbuffer;
|
|
unsigned long flags;
|
|
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
return -EACCES;
|
|
|
|
arcmsr_clear_iop2drv_rqueue_buffer(acb);
|
|
acb->acb_flags |=
|
|
(ACB_F_MESSAGE_WQBUFFER_CLEARED
|
|
| ACB_F_MESSAGE_RQBUFFER_CLEARED
|
|
| ACB_F_MESSAGE_WQBUFFER_READED);
|
|
spin_lock_irqsave(&acb->rqbuffer_lock, flags);
|
|
acb->rqbuf_getIndex = 0;
|
|
acb->rqbuf_putIndex = 0;
|
|
spin_unlock_irqrestore(&acb->rqbuffer_lock, flags);
|
|
spin_lock_irqsave(&acb->wqbuffer_lock, flags);
|
|
acb->wqbuf_getIndex = 0;
|
|
acb->wqbuf_putIndex = 0;
|
|
spin_unlock_irqrestore(&acb->wqbuffer_lock, flags);
|
|
pQbuffer = acb->rqbuffer;
|
|
memset(pQbuffer, 0, sizeof (struct QBUFFER));
|
|
pQbuffer = acb->wqbuffer;
|
|
memset(pQbuffer, 0, sizeof (struct QBUFFER));
|
|
return 1;
|
|
}
|
|
|
|
static const struct bin_attribute arcmsr_sysfs_message_read_attr = {
|
|
.attr = {
|
|
.name = "mu_read",
|
|
.mode = S_IRUSR ,
|
|
},
|
|
.size = ARCMSR_API_DATA_BUFLEN,
|
|
.read = arcmsr_sysfs_iop_message_read,
|
|
};
|
|
|
|
static const struct bin_attribute arcmsr_sysfs_message_write_attr = {
|
|
.attr = {
|
|
.name = "mu_write",
|
|
.mode = S_IWUSR,
|
|
},
|
|
.size = ARCMSR_API_DATA_BUFLEN,
|
|
.write = arcmsr_sysfs_iop_message_write,
|
|
};
|
|
|
|
static const struct bin_attribute arcmsr_sysfs_message_clear_attr = {
|
|
.attr = {
|
|
.name = "mu_clear",
|
|
.mode = S_IWUSR,
|
|
},
|
|
.size = 1,
|
|
.write = arcmsr_sysfs_iop_message_clear,
|
|
};
|
|
|
|
int arcmsr_alloc_sysfs_attr(struct AdapterControlBlock *acb)
|
|
{
|
|
struct Scsi_Host *host = acb->host;
|
|
int error;
|
|
|
|
error = sysfs_create_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_read_attr);
|
|
if (error) {
|
|
printk(KERN_ERR "arcmsr: alloc sysfs mu_read failed\n");
|
|
goto error_bin_file_message_read;
|
|
}
|
|
error = sysfs_create_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_write_attr);
|
|
if (error) {
|
|
printk(KERN_ERR "arcmsr: alloc sysfs mu_write failed\n");
|
|
goto error_bin_file_message_write;
|
|
}
|
|
error = sysfs_create_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_clear_attr);
|
|
if (error) {
|
|
printk(KERN_ERR "arcmsr: alloc sysfs mu_clear failed\n");
|
|
goto error_bin_file_message_clear;
|
|
}
|
|
return 0;
|
|
error_bin_file_message_clear:
|
|
sysfs_remove_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_write_attr);
|
|
error_bin_file_message_write:
|
|
sysfs_remove_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_read_attr);
|
|
error_bin_file_message_read:
|
|
return error;
|
|
}
|
|
|
|
void arcmsr_free_sysfs_attr(struct AdapterControlBlock *acb)
|
|
{
|
|
struct Scsi_Host *host = acb->host;
|
|
|
|
sysfs_remove_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_clear_attr);
|
|
sysfs_remove_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_write_attr);
|
|
sysfs_remove_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_read_attr);
|
|
}
|
|
|
|
|
|
static ssize_t
|
|
arcmsr_attr_host_driver_version(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
return snprintf(buf, PAGE_SIZE,
|
|
"%s\n",
|
|
ARCMSR_DRIVER_VERSION);
|
|
}
|
|
|
|
static ssize_t
|
|
arcmsr_attr_host_driver_posted_cmd(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct Scsi_Host *host = class_to_shost(dev);
|
|
struct AdapterControlBlock *acb =
|
|
(struct AdapterControlBlock *) host->hostdata;
|
|
return snprintf(buf, PAGE_SIZE,
|
|
"%4d\n",
|
|
atomic_read(&acb->ccboutstandingcount));
|
|
}
|
|
|
|
static ssize_t
|
|
arcmsr_attr_host_driver_reset(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct Scsi_Host *host = class_to_shost(dev);
|
|
struct AdapterControlBlock *acb =
|
|
(struct AdapterControlBlock *) host->hostdata;
|
|
return snprintf(buf, PAGE_SIZE,
|
|
"%4d\n",
|
|
acb->num_resets);
|
|
}
|
|
|
|
static ssize_t
|
|
arcmsr_attr_host_driver_abort(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct Scsi_Host *host = class_to_shost(dev);
|
|
struct AdapterControlBlock *acb =
|
|
(struct AdapterControlBlock *) host->hostdata;
|
|
return snprintf(buf, PAGE_SIZE,
|
|
"%4d\n",
|
|
acb->num_aborts);
|
|
}
|
|
|
|
static ssize_t
|
|
arcmsr_attr_host_fw_model(struct device *dev, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct Scsi_Host *host = class_to_shost(dev);
|
|
struct AdapterControlBlock *acb =
|
|
(struct AdapterControlBlock *) host->hostdata;
|
|
return snprintf(buf, PAGE_SIZE,
|
|
"%s\n",
|
|
acb->firm_model);
|
|
}
|
|
|
|
static ssize_t
|
|
arcmsr_attr_host_fw_version(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct Scsi_Host *host = class_to_shost(dev);
|
|
struct AdapterControlBlock *acb =
|
|
(struct AdapterControlBlock *) host->hostdata;
|
|
|
|
return snprintf(buf, PAGE_SIZE,
|
|
"%s\n",
|
|
acb->firm_version);
|
|
}
|
|
|
|
static ssize_t
|
|
arcmsr_attr_host_fw_request_len(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct Scsi_Host *host = class_to_shost(dev);
|
|
struct AdapterControlBlock *acb =
|
|
(struct AdapterControlBlock *) host->hostdata;
|
|
|
|
return snprintf(buf, PAGE_SIZE,
|
|
"%4d\n",
|
|
acb->firm_request_len);
|
|
}
|
|
|
|
static ssize_t
|
|
arcmsr_attr_host_fw_numbers_queue(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct Scsi_Host *host = class_to_shost(dev);
|
|
struct AdapterControlBlock *acb =
|
|
(struct AdapterControlBlock *) host->hostdata;
|
|
|
|
return snprintf(buf, PAGE_SIZE,
|
|
"%4d\n",
|
|
acb->firm_numbers_queue);
|
|
}
|
|
|
|
static ssize_t
|
|
arcmsr_attr_host_fw_sdram_size(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct Scsi_Host *host = class_to_shost(dev);
|
|
struct AdapterControlBlock *acb =
|
|
(struct AdapterControlBlock *) host->hostdata;
|
|
|
|
return snprintf(buf, PAGE_SIZE,
|
|
"%4d\n",
|
|
acb->firm_sdram_size);
|
|
}
|
|
|
|
static ssize_t
|
|
arcmsr_attr_host_fw_hd_channels(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct Scsi_Host *host = class_to_shost(dev);
|
|
struct AdapterControlBlock *acb =
|
|
(struct AdapterControlBlock *) host->hostdata;
|
|
|
|
return snprintf(buf, PAGE_SIZE,
|
|
"%4d\n",
|
|
acb->firm_hd_channels);
|
|
}
|
|
|
|
static DEVICE_ATTR(host_driver_version, S_IRUGO, arcmsr_attr_host_driver_version, NULL);
|
|
static DEVICE_ATTR(host_driver_posted_cmd, S_IRUGO, arcmsr_attr_host_driver_posted_cmd, NULL);
|
|
static DEVICE_ATTR(host_driver_reset, S_IRUGO, arcmsr_attr_host_driver_reset, NULL);
|
|
static DEVICE_ATTR(host_driver_abort, S_IRUGO, arcmsr_attr_host_driver_abort, NULL);
|
|
static DEVICE_ATTR(host_fw_model, S_IRUGO, arcmsr_attr_host_fw_model, NULL);
|
|
static DEVICE_ATTR(host_fw_version, S_IRUGO, arcmsr_attr_host_fw_version, NULL);
|
|
static DEVICE_ATTR(host_fw_request_len, S_IRUGO, arcmsr_attr_host_fw_request_len, NULL);
|
|
static DEVICE_ATTR(host_fw_numbers_queue, S_IRUGO, arcmsr_attr_host_fw_numbers_queue, NULL);
|
|
static DEVICE_ATTR(host_fw_sdram_size, S_IRUGO, arcmsr_attr_host_fw_sdram_size, NULL);
|
|
static DEVICE_ATTR(host_fw_hd_channels, S_IRUGO, arcmsr_attr_host_fw_hd_channels, NULL);
|
|
|
|
struct device_attribute *arcmsr_host_attrs[] = {
|
|
&dev_attr_host_driver_version,
|
|
&dev_attr_host_driver_posted_cmd,
|
|
&dev_attr_host_driver_reset,
|
|
&dev_attr_host_driver_abort,
|
|
&dev_attr_host_fw_model,
|
|
&dev_attr_host_fw_version,
|
|
&dev_attr_host_fw_request_len,
|
|
&dev_attr_host_fw_numbers_queue,
|
|
&dev_attr_host_fw_sdram_size,
|
|
&dev_attr_host_fw_hd_channels,
|
|
NULL,
|
|
};
|