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