38515e908b
The obsolete SA_xxx interrupt flags have been used despite the scheduled removal. Fixup the remaining users. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Ingo Molnar <mingo@elte.hu> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Roman Zippel <zippel@linux-m68k.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Jeff Garzik <jeff@garzik.org> Cc: Wim Van Sebroeck <wim@iguana.be> Cc: Roland Dreier <rolandd@cisco.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: James Bottomley <James.Bottomley@steeleye.com> Cc: Greg KH <greg@kroah.com> Cc: Dave Airlie <airlied@linux.ie> Cc: James Simmons <jsimmons@infradead.org> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1495 lines
46 KiB
C
1495 lines
46 KiB
C
/*
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*******************************************************************************
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** O.S : Linux
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** FILE NAME : arcmsr_hba.c
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** BY : Erich Chen
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** Description: SCSI RAID Device Driver for
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** ARECA RAID Host adapter
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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: erich@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.txt
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*******************************************************************************
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*/
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#include <linux/module.h>
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#include <linux/reboot.h>
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#include <linux/spinlock.h>
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#include <linux/pci_ids.h>
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#include <linux/interrupt.h>
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#include <linux/moduleparam.h>
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#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/delay.h>
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#include <linux/dma-mapping.h>
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#include <linux/timer.h>
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#include <linux/pci.h>
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#include <asm/dma.h>
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#include <asm/io.h>
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#include <asm/system.h>
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#include <asm/uaccess.h>
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#include <scsi/scsi_host.h>
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#include <scsi/scsi.h>
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#include <scsi/scsi_cmnd.h>
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#include <scsi/scsi_tcq.h>
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#include <scsi/scsi_device.h>
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#include <scsi/scsi_transport.h>
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#include <scsi/scsicam.h>
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#include "arcmsr.h"
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MODULE_AUTHOR("Erich Chen <erich@areca.com.tw>");
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MODULE_DESCRIPTION("ARECA (ARC11xx/12xx) SATA RAID HOST Adapter");
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MODULE_LICENSE("Dual BSD/GPL");
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MODULE_VERSION(ARCMSR_DRIVER_VERSION);
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static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb, struct scsi_cmnd *cmd);
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static int arcmsr_abort(struct scsi_cmnd *);
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static int arcmsr_bus_reset(struct scsi_cmnd *);
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static int arcmsr_bios_param(struct scsi_device *sdev,
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struct block_device *bdev, sector_t capacity, int *info);
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static int arcmsr_queue_command(struct scsi_cmnd * cmd,
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void (*done) (struct scsi_cmnd *));
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static int arcmsr_probe(struct pci_dev *pdev,
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const struct pci_device_id *id);
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static void arcmsr_remove(struct pci_dev *pdev);
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static void arcmsr_shutdown(struct pci_dev *pdev);
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static void arcmsr_iop_init(struct AdapterControlBlock *acb);
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static void arcmsr_free_ccb_pool(struct AdapterControlBlock *acb);
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static void arcmsr_stop_adapter_bgrb(struct AdapterControlBlock *acb);
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static void arcmsr_flush_adapter_cache(struct AdapterControlBlock *acb);
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static uint8_t arcmsr_wait_msgint_ready(struct AdapterControlBlock *acb);
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static const char *arcmsr_info(struct Scsi_Host *);
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static irqreturn_t arcmsr_interrupt(struct AdapterControlBlock *acb);
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static int arcmsr_adjust_disk_queue_depth(struct scsi_device *sdev, int queue_depth)
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{
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if (queue_depth > ARCMSR_MAX_CMD_PERLUN)
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queue_depth = ARCMSR_MAX_CMD_PERLUN;
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scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG, queue_depth);
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return queue_depth;
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}
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static struct scsi_host_template arcmsr_scsi_host_template = {
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.module = THIS_MODULE,
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.name = "ARCMSR ARECA SATA RAID HOST Adapter" ARCMSR_DRIVER_VERSION,
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.info = arcmsr_info,
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.queuecommand = arcmsr_queue_command,
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.eh_abort_handler = arcmsr_abort,
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.eh_bus_reset_handler = arcmsr_bus_reset,
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.bios_param = arcmsr_bios_param,
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.change_queue_depth = arcmsr_adjust_disk_queue_depth,
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.can_queue = ARCMSR_MAX_OUTSTANDING_CMD,
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.this_id = ARCMSR_SCSI_INITIATOR_ID,
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.sg_tablesize = ARCMSR_MAX_SG_ENTRIES,
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.max_sectors = ARCMSR_MAX_XFER_SECTORS,
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.cmd_per_lun = ARCMSR_MAX_CMD_PERLUN,
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.use_clustering = ENABLE_CLUSTERING,
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.shost_attrs = arcmsr_host_attrs,
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};
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static struct pci_device_id arcmsr_device_id_table[] = {
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{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1110)},
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{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1120)},
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{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1130)},
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{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1160)},
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{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1170)},
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{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1210)},
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{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1220)},
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{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1230)},
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{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1260)},
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{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1270)},
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{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1280)},
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{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1380)},
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{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1381)},
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{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1680)},
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{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1681)},
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{0, 0}, /* Terminating entry */
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};
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MODULE_DEVICE_TABLE(pci, arcmsr_device_id_table);
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static struct pci_driver arcmsr_pci_driver = {
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.name = "arcmsr",
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.id_table = arcmsr_device_id_table,
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.probe = arcmsr_probe,
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.remove = arcmsr_remove,
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.shutdown = arcmsr_shutdown
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};
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static irqreturn_t arcmsr_do_interrupt(int irq, void *dev_id)
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{
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irqreturn_t handle_state;
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struct AdapterControlBlock *acb;
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unsigned long flags;
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acb = (struct AdapterControlBlock *)dev_id;
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spin_lock_irqsave(acb->host->host_lock, flags);
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handle_state = arcmsr_interrupt(acb);
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spin_unlock_irqrestore(acb->host->host_lock, flags);
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return handle_state;
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}
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static int arcmsr_bios_param(struct scsi_device *sdev,
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struct block_device *bdev, sector_t capacity, int *geom)
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{
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int ret, heads, sectors, cylinders, total_capacity;
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unsigned char *buffer;/* return copy of block device's partition table */
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buffer = scsi_bios_ptable(bdev);
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if (buffer) {
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ret = scsi_partsize(buffer, capacity, &geom[2], &geom[0], &geom[1]);
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kfree(buffer);
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if (ret != -1)
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return ret;
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}
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total_capacity = capacity;
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heads = 64;
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sectors = 32;
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cylinders = total_capacity / (heads * sectors);
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if (cylinders > 1024) {
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heads = 255;
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sectors = 63;
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cylinders = total_capacity / (heads * sectors);
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}
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geom[0] = heads;
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geom[1] = sectors;
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geom[2] = cylinders;
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return 0;
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}
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static int arcmsr_alloc_ccb_pool(struct AdapterControlBlock *acb)
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{
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struct pci_dev *pdev = acb->pdev;
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struct MessageUnit __iomem *reg = acb->pmu;
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u32 ccb_phyaddr_hi32;
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void *dma_coherent;
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dma_addr_t dma_coherent_handle, dma_addr;
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struct CommandControlBlock *ccb_tmp;
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int i, j;
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dma_coherent = dma_alloc_coherent(&pdev->dev,
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ARCMSR_MAX_FREECCB_NUM *
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sizeof (struct CommandControlBlock) + 0x20,
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&dma_coherent_handle, GFP_KERNEL);
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if (!dma_coherent)
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return -ENOMEM;
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acb->dma_coherent = dma_coherent;
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acb->dma_coherent_handle = dma_coherent_handle;
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if (((unsigned long)dma_coherent & 0x1F)) {
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dma_coherent = dma_coherent +
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(0x20 - ((unsigned long)dma_coherent & 0x1F));
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dma_coherent_handle = dma_coherent_handle +
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(0x20 - ((unsigned long)dma_coherent_handle & 0x1F));
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}
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dma_addr = dma_coherent_handle;
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ccb_tmp = (struct CommandControlBlock *)dma_coherent;
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for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
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ccb_tmp->cdb_shifted_phyaddr = dma_addr >> 5;
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ccb_tmp->acb = acb;
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acb->pccb_pool[i] = ccb_tmp;
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list_add_tail(&ccb_tmp->list, &acb->ccb_free_list);
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dma_addr = dma_addr + sizeof (struct CommandControlBlock);
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ccb_tmp++;
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}
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acb->vir2phy_offset = (unsigned long)ccb_tmp -
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(unsigned long)dma_addr;
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for (i = 0; i < ARCMSR_MAX_TARGETID; i++)
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for (j = 0; j < ARCMSR_MAX_TARGETLUN; j++)
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acb->devstate[i][j] = ARECA_RAID_GOOD;
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/*
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** here we need to tell iop 331 our ccb_tmp.HighPart
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** if ccb_tmp.HighPart is not zero
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*/
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ccb_phyaddr_hi32 = (uint32_t) ((dma_coherent_handle >> 16) >> 16);
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if (ccb_phyaddr_hi32 != 0) {
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writel(ARCMSR_SIGNATURE_SET_CONFIG, ®->message_rwbuffer[0]);
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writel(ccb_phyaddr_hi32, ®->message_rwbuffer[1]);
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writel(ARCMSR_INBOUND_MESG0_SET_CONFIG, ®->inbound_msgaddr0);
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if (arcmsr_wait_msgint_ready(acb))
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printk(KERN_NOTICE "arcmsr%d: "
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"'set ccb high part physical address' timeout\n",
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acb->host->host_no);
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}
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|
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writel(readl(®->outbound_intmask) |
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ARCMSR_MU_OUTBOUND_ALL_INTMASKENABLE,
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®->outbound_intmask);
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return 0;
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}
|
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|
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static int arcmsr_probe(struct pci_dev *pdev,
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const struct pci_device_id *id)
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{
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struct Scsi_Host *host;
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struct AdapterControlBlock *acb;
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uint8_t bus, dev_fun;
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int error;
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error = pci_enable_device(pdev);
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if (error)
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goto out;
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pci_set_master(pdev);
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host = scsi_host_alloc(&arcmsr_scsi_host_template,
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sizeof(struct AdapterControlBlock));
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if (!host) {
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error = -ENOMEM;
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goto out_disable_device;
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}
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acb = (struct AdapterControlBlock *)host->hostdata;
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memset(acb, 0, sizeof (struct AdapterControlBlock));
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|
|
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error = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
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if (error) {
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error = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
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if (error) {
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printk(KERN_WARNING
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"scsi%d: No suitable DMA mask available\n",
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host->host_no);
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goto out_host_put;
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}
|
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}
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bus = pdev->bus->number;
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dev_fun = pdev->devfn;
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acb->host = host;
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acb->pdev = pdev;
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host->max_sectors = ARCMSR_MAX_XFER_SECTORS;
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host->max_lun = ARCMSR_MAX_TARGETLUN;
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host->max_id = ARCMSR_MAX_TARGETID;/*16:8*/
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host->max_cmd_len = 16; /*this is issue of 64bit LBA, over 2T byte*/
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host->sg_tablesize = ARCMSR_MAX_SG_ENTRIES;
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host->can_queue = ARCMSR_MAX_FREECCB_NUM; /* max simultaneous cmds */
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host->cmd_per_lun = ARCMSR_MAX_CMD_PERLUN;
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host->this_id = ARCMSR_SCSI_INITIATOR_ID;
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host->unique_id = (bus << 8) | dev_fun;
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host->irq = pdev->irq;
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error = pci_request_regions(pdev, "arcmsr");
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if (error)
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goto out_host_put;
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|
|
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acb->pmu = ioremap(pci_resource_start(pdev, 0),
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pci_resource_len(pdev, 0));
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if (!acb->pmu) {
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printk(KERN_NOTICE "arcmsr%d: memory"
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" mapping region fail \n", acb->host->host_no);
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goto out_release_regions;
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}
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acb->acb_flags |= (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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acb->acb_flags &= ~ACB_F_SCSISTOPADAPTER;
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INIT_LIST_HEAD(&acb->ccb_free_list);
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error = arcmsr_alloc_ccb_pool(acb);
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if (error)
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goto out_iounmap;
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|
|
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error = request_irq(pdev->irq, arcmsr_do_interrupt,
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IRQF_DISABLED | IRQF_SHARED, "arcmsr", acb);
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if (error)
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goto out_free_ccb_pool;
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|
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arcmsr_iop_init(acb);
|
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pci_set_drvdata(pdev, host);
|
|
|
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error = scsi_add_host(host, &pdev->dev);
|
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if (error)
|
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goto out_free_irq;
|
|
|
|
error = arcmsr_alloc_sysfs_attr(acb);
|
|
if (error)
|
|
goto out_free_sysfs;
|
|
|
|
scsi_scan_host(host);
|
|
return 0;
|
|
out_free_sysfs:
|
|
out_free_irq:
|
|
free_irq(pdev->irq, acb);
|
|
out_free_ccb_pool:
|
|
arcmsr_free_ccb_pool(acb);
|
|
out_iounmap:
|
|
iounmap(acb->pmu);
|
|
out_release_regions:
|
|
pci_release_regions(pdev);
|
|
out_host_put:
|
|
scsi_host_put(host);
|
|
out_disable_device:
|
|
pci_disable_device(pdev);
|
|
out:
|
|
return error;
|
|
}
|
|
|
|
static void arcmsr_abort_allcmd(struct AdapterControlBlock *acb)
|
|
{
|
|
struct MessageUnit __iomem *reg = acb->pmu;
|
|
|
|
writel(ARCMSR_INBOUND_MESG0_ABORT_CMD, ®->inbound_msgaddr0);
|
|
if (arcmsr_wait_msgint_ready(acb))
|
|
printk(KERN_NOTICE
|
|
"arcmsr%d: wait 'abort all outstanding command' timeout \n"
|
|
, acb->host->host_no);
|
|
}
|
|
|
|
static void arcmsr_pci_unmap_dma(struct CommandControlBlock *ccb)
|
|
{
|
|
struct AdapterControlBlock *acb = ccb->acb;
|
|
struct scsi_cmnd *pcmd = ccb->pcmd;
|
|
|
|
if (pcmd->use_sg != 0) {
|
|
struct scatterlist *sl;
|
|
|
|
sl = (struct scatterlist *)pcmd->request_buffer;
|
|
pci_unmap_sg(acb->pdev, sl, pcmd->use_sg, pcmd->sc_data_direction);
|
|
}
|
|
else if (pcmd->request_bufflen != 0)
|
|
pci_unmap_single(acb->pdev,
|
|
pcmd->SCp.dma_handle,
|
|
pcmd->request_bufflen, pcmd->sc_data_direction);
|
|
}
|
|
|
|
static void arcmsr_ccb_complete(struct CommandControlBlock *ccb, int stand_flag)
|
|
{
|
|
struct AdapterControlBlock *acb = ccb->acb;
|
|
struct scsi_cmnd *pcmd = ccb->pcmd;
|
|
|
|
arcmsr_pci_unmap_dma(ccb);
|
|
if (stand_flag == 1)
|
|
atomic_dec(&acb->ccboutstandingcount);
|
|
ccb->startdone = ARCMSR_CCB_DONE;
|
|
ccb->ccb_flags = 0;
|
|
list_add_tail(&ccb->list, &acb->ccb_free_list);
|
|
pcmd->scsi_done(pcmd);
|
|
}
|
|
|
|
static void arcmsr_remove(struct pci_dev *pdev)
|
|
{
|
|
struct Scsi_Host *host = pci_get_drvdata(pdev);
|
|
struct AdapterControlBlock *acb =
|
|
(struct AdapterControlBlock *) host->hostdata;
|
|
struct MessageUnit __iomem *reg = acb->pmu;
|
|
int poll_count = 0;
|
|
|
|
arcmsr_free_sysfs_attr(acb);
|
|
scsi_remove_host(host);
|
|
arcmsr_stop_adapter_bgrb(acb);
|
|
arcmsr_flush_adapter_cache(acb);
|
|
writel(readl(®->outbound_intmask) |
|
|
ARCMSR_MU_OUTBOUND_ALL_INTMASKENABLE,
|
|
®->outbound_intmask);
|
|
acb->acb_flags |= ACB_F_SCSISTOPADAPTER;
|
|
acb->acb_flags &= ~ACB_F_IOP_INITED;
|
|
|
|
for (poll_count = 0; poll_count < 256; poll_count++) {
|
|
if (!atomic_read(&acb->ccboutstandingcount))
|
|
break;
|
|
arcmsr_interrupt(acb);
|
|
msleep(25);
|
|
}
|
|
|
|
if (atomic_read(&acb->ccboutstandingcount)) {
|
|
int i;
|
|
|
|
arcmsr_abort_allcmd(acb);
|
|
for (i = 0; i < ARCMSR_MAX_OUTSTANDING_CMD; i++)
|
|
readl(®->outbound_queueport);
|
|
for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
|
|
struct CommandControlBlock *ccb = acb->pccb_pool[i];
|
|
if (ccb->startdone == ARCMSR_CCB_START) {
|
|
ccb->startdone = ARCMSR_CCB_ABORTED;
|
|
ccb->pcmd->result = DID_ABORT << 16;
|
|
arcmsr_ccb_complete(ccb, 1);
|
|
}
|
|
}
|
|
}
|
|
|
|
free_irq(pdev->irq, acb);
|
|
iounmap(acb->pmu);
|
|
arcmsr_free_ccb_pool(acb);
|
|
pci_release_regions(pdev);
|
|
|
|
scsi_host_put(host);
|
|
|
|
pci_disable_device(pdev);
|
|
pci_set_drvdata(pdev, NULL);
|
|
}
|
|
|
|
static void arcmsr_shutdown(struct pci_dev *pdev)
|
|
{
|
|
struct Scsi_Host *host = pci_get_drvdata(pdev);
|
|
struct AdapterControlBlock *acb =
|
|
(struct AdapterControlBlock *)host->hostdata;
|
|
|
|
arcmsr_stop_adapter_bgrb(acb);
|
|
arcmsr_flush_adapter_cache(acb);
|
|
}
|
|
|
|
static int arcmsr_module_init(void)
|
|
{
|
|
int error = 0;
|
|
|
|
error = pci_register_driver(&arcmsr_pci_driver);
|
|
return error;
|
|
}
|
|
|
|
static void arcmsr_module_exit(void)
|
|
{
|
|
pci_unregister_driver(&arcmsr_pci_driver);
|
|
}
|
|
module_init(arcmsr_module_init);
|
|
module_exit(arcmsr_module_exit);
|
|
|
|
static u32 arcmsr_disable_outbound_ints(struct AdapterControlBlock *acb)
|
|
{
|
|
struct MessageUnit __iomem *reg = acb->pmu;
|
|
u32 orig_mask = readl(®->outbound_intmask);
|
|
|
|
writel(orig_mask | ARCMSR_MU_OUTBOUND_ALL_INTMASKENABLE,
|
|
®->outbound_intmask);
|
|
return orig_mask;
|
|
}
|
|
|
|
static void arcmsr_enable_outbound_ints(struct AdapterControlBlock *acb,
|
|
u32 orig_mask)
|
|
{
|
|
struct MessageUnit __iomem *reg = acb->pmu;
|
|
u32 mask;
|
|
|
|
mask = orig_mask & ~(ARCMSR_MU_OUTBOUND_POSTQUEUE_INTMASKENABLE |
|
|
ARCMSR_MU_OUTBOUND_DOORBELL_INTMASKENABLE);
|
|
writel(mask, ®->outbound_intmask);
|
|
}
|
|
|
|
static void arcmsr_flush_adapter_cache(struct AdapterControlBlock *acb)
|
|
{
|
|
struct MessageUnit __iomem *reg=acb->pmu;
|
|
|
|
writel(ARCMSR_INBOUND_MESG0_FLUSH_CACHE, ®->inbound_msgaddr0);
|
|
if (arcmsr_wait_msgint_ready(acb))
|
|
printk(KERN_NOTICE
|
|
"arcmsr%d: wait 'flush adapter cache' timeout \n"
|
|
, acb->host->host_no);
|
|
}
|
|
|
|
static void arcmsr_report_sense_info(struct CommandControlBlock *ccb)
|
|
{
|
|
struct scsi_cmnd *pcmd = ccb->pcmd;
|
|
struct SENSE_DATA *sensebuffer = (struct SENSE_DATA *)pcmd->sense_buffer;
|
|
|
|
pcmd->result = DID_OK << 16;
|
|
if (sensebuffer) {
|
|
int sense_data_length =
|
|
sizeof (struct SENSE_DATA) < sizeof (pcmd->sense_buffer)
|
|
? sizeof (struct SENSE_DATA) : sizeof (pcmd->sense_buffer);
|
|
memset(sensebuffer, 0, sizeof (pcmd->sense_buffer));
|
|
memcpy(sensebuffer, ccb->arcmsr_cdb.SenseData, sense_data_length);
|
|
sensebuffer->ErrorCode = SCSI_SENSE_CURRENT_ERRORS;
|
|
sensebuffer->Valid = 1;
|
|
}
|
|
}
|
|
|
|
static uint8_t arcmsr_wait_msgint_ready(struct AdapterControlBlock *acb)
|
|
{
|
|
struct MessageUnit __iomem *reg = acb->pmu;
|
|
uint32_t Index;
|
|
uint8_t Retries = 0x00;
|
|
|
|
do {
|
|
for (Index = 0; Index < 100; Index++) {
|
|
if (readl(®->outbound_intstatus)
|
|
& ARCMSR_MU_OUTBOUND_MESSAGE0_INT) {
|
|
writel(ARCMSR_MU_OUTBOUND_MESSAGE0_INT
|
|
, ®->outbound_intstatus);
|
|
return 0x00;
|
|
}
|
|
msleep_interruptible(10);
|
|
}/*max 1 seconds*/
|
|
} while (Retries++ < 20);/*max 20 sec*/
|
|
return 0xff;
|
|
}
|
|
|
|
static void arcmsr_build_ccb(struct AdapterControlBlock *acb,
|
|
struct CommandControlBlock *ccb, struct scsi_cmnd *pcmd)
|
|
{
|
|
struct ARCMSR_CDB *arcmsr_cdb = (struct ARCMSR_CDB *)&ccb->arcmsr_cdb;
|
|
int8_t *psge = (int8_t *)&arcmsr_cdb->u;
|
|
uint32_t address_lo, address_hi;
|
|
int arccdbsize = 0x30;
|
|
|
|
ccb->pcmd = pcmd;
|
|
memset(arcmsr_cdb, 0, sizeof (struct ARCMSR_CDB));
|
|
arcmsr_cdb->Bus = 0;
|
|
arcmsr_cdb->TargetID = pcmd->device->id;
|
|
arcmsr_cdb->LUN = pcmd->device->lun;
|
|
arcmsr_cdb->Function = 1;
|
|
arcmsr_cdb->CdbLength = (uint8_t)pcmd->cmd_len;
|
|
arcmsr_cdb->Context = (unsigned long)arcmsr_cdb;
|
|
memcpy(arcmsr_cdb->Cdb, pcmd->cmnd, pcmd->cmd_len);
|
|
if (pcmd->use_sg) {
|
|
int length, sgcount, i, cdb_sgcount = 0;
|
|
struct scatterlist *sl;
|
|
|
|
/* Get Scatter Gather List from scsiport. */
|
|
sl = (struct scatterlist *) pcmd->request_buffer;
|
|
sgcount = pci_map_sg(acb->pdev, sl, pcmd->use_sg,
|
|
pcmd->sc_data_direction);
|
|
/* map stor port SG list to our iop SG List. */
|
|
for (i = 0; i < sgcount; i++) {
|
|
/* Get the physical address of the current data pointer */
|
|
length = cpu_to_le32(sg_dma_len(sl));
|
|
address_lo = cpu_to_le32(dma_addr_lo32(sg_dma_address(sl)));
|
|
address_hi = cpu_to_le32(dma_addr_hi32(sg_dma_address(sl)));
|
|
if (address_hi == 0) {
|
|
struct SG32ENTRY *pdma_sg = (struct SG32ENTRY *)psge;
|
|
|
|
pdma_sg->address = address_lo;
|
|
pdma_sg->length = length;
|
|
psge += sizeof (struct SG32ENTRY);
|
|
arccdbsize += sizeof (struct SG32ENTRY);
|
|
} else {
|
|
struct SG64ENTRY *pdma_sg = (struct SG64ENTRY *)psge;
|
|
|
|
pdma_sg->addresshigh = address_hi;
|
|
pdma_sg->address = address_lo;
|
|
pdma_sg->length = length|IS_SG64_ADDR;
|
|
psge += sizeof (struct SG64ENTRY);
|
|
arccdbsize += sizeof (struct SG64ENTRY);
|
|
}
|
|
sl++;
|
|
cdb_sgcount++;
|
|
}
|
|
arcmsr_cdb->sgcount = (uint8_t)cdb_sgcount;
|
|
arcmsr_cdb->DataLength = pcmd->request_bufflen;
|
|
if ( arccdbsize > 256)
|
|
arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_SGL_BSIZE;
|
|
} else if (pcmd->request_bufflen) {
|
|
dma_addr_t dma_addr;
|
|
dma_addr = pci_map_single(acb->pdev, pcmd->request_buffer,
|
|
pcmd->request_bufflen, pcmd->sc_data_direction);
|
|
pcmd->SCp.dma_handle = dma_addr;
|
|
address_lo = cpu_to_le32(dma_addr_lo32(dma_addr));
|
|
address_hi = cpu_to_le32(dma_addr_hi32(dma_addr));
|
|
if (address_hi == 0) {
|
|
struct SG32ENTRY *pdma_sg = (struct SG32ENTRY *)psge;
|
|
pdma_sg->address = address_lo;
|
|
pdma_sg->length = pcmd->request_bufflen;
|
|
} else {
|
|
struct SG64ENTRY *pdma_sg = (struct SG64ENTRY *)psge;
|
|
pdma_sg->addresshigh = address_hi;
|
|
pdma_sg->address = address_lo;
|
|
pdma_sg->length = pcmd->request_bufflen|IS_SG64_ADDR;
|
|
}
|
|
arcmsr_cdb->sgcount = 1;
|
|
arcmsr_cdb->DataLength = pcmd->request_bufflen;
|
|
}
|
|
if (pcmd->sc_data_direction == DMA_TO_DEVICE ) {
|
|
arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_WRITE;
|
|
ccb->ccb_flags |= CCB_FLAG_WRITE;
|
|
}
|
|
}
|
|
|
|
static void arcmsr_post_ccb(struct AdapterControlBlock *acb, struct CommandControlBlock *ccb)
|
|
{
|
|
struct MessageUnit __iomem *reg = acb->pmu;
|
|
uint32_t cdb_shifted_phyaddr = ccb->cdb_shifted_phyaddr;
|
|
struct ARCMSR_CDB *arcmsr_cdb = (struct ARCMSR_CDB *)&ccb->arcmsr_cdb;
|
|
|
|
atomic_inc(&acb->ccboutstandingcount);
|
|
ccb->startdone = ARCMSR_CCB_START;
|
|
if (arcmsr_cdb->Flags & ARCMSR_CDB_FLAG_SGL_BSIZE)
|
|
writel(cdb_shifted_phyaddr | ARCMSR_CCBPOST_FLAG_SGL_BSIZE,
|
|
®->inbound_queueport);
|
|
else
|
|
writel(cdb_shifted_phyaddr, ®->inbound_queueport);
|
|
}
|
|
|
|
void arcmsr_post_Qbuffer(struct AdapterControlBlock *acb)
|
|
{
|
|
struct MessageUnit __iomem *reg = acb->pmu;
|
|
struct QBUFFER __iomem *pwbuffer = (struct QBUFFER __iomem *) ®->message_wbuffer;
|
|
uint8_t __iomem *iop_data = (uint8_t __iomem *) pwbuffer->data;
|
|
int32_t allxfer_len = 0;
|
|
|
|
if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_READED) {
|
|
acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED);
|
|
while ((acb->wqbuf_firstindex != acb->wqbuf_lastindex)
|
|
&& (allxfer_len < 124)) {
|
|
writeb(acb->wqbuffer[acb->wqbuf_firstindex], iop_data);
|
|
acb->wqbuf_firstindex++;
|
|
acb->wqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
|
|
iop_data++;
|
|
allxfer_len++;
|
|
}
|
|
writel(allxfer_len, &pwbuffer->data_len);
|
|
writel(ARCMSR_INBOUND_DRIVER_DATA_WRITE_OK
|
|
, ®->inbound_doorbell);
|
|
}
|
|
}
|
|
|
|
static void arcmsr_stop_adapter_bgrb(struct AdapterControlBlock *acb)
|
|
{
|
|
struct MessageUnit __iomem *reg = acb->pmu;
|
|
|
|
acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
|
|
writel(ARCMSR_INBOUND_MESG0_STOP_BGRB, ®->inbound_msgaddr0);
|
|
if (arcmsr_wait_msgint_ready(acb))
|
|
printk(KERN_NOTICE
|
|
"arcmsr%d: wait 'stop adapter background rebulid' timeout \n"
|
|
, acb->host->host_no);
|
|
}
|
|
|
|
static void arcmsr_free_ccb_pool(struct AdapterControlBlock *acb)
|
|
{
|
|
dma_free_coherent(&acb->pdev->dev,
|
|
ARCMSR_MAX_FREECCB_NUM * sizeof (struct CommandControlBlock) + 0x20,
|
|
acb->dma_coherent,
|
|
acb->dma_coherent_handle);
|
|
}
|
|
|
|
static irqreturn_t arcmsr_interrupt(struct AdapterControlBlock *acb)
|
|
{
|
|
struct MessageUnit __iomem *reg = acb->pmu;
|
|
struct CommandControlBlock *ccb;
|
|
uint32_t flag_ccb, outbound_intstatus, outbound_doorbell;
|
|
|
|
outbound_intstatus = readl(®->outbound_intstatus)
|
|
& acb->outbound_int_enable;
|
|
writel(outbound_intstatus, ®->outbound_intstatus);
|
|
if (outbound_intstatus & ARCMSR_MU_OUTBOUND_DOORBELL_INT) {
|
|
outbound_doorbell = readl(®->outbound_doorbell);
|
|
writel(outbound_doorbell, ®->outbound_doorbell);
|
|
if (outbound_doorbell & ARCMSR_OUTBOUND_IOP331_DATA_WRITE_OK) {
|
|
struct QBUFFER __iomem * prbuffer =
|
|
(struct QBUFFER __iomem *) ®->message_rbuffer;
|
|
uint8_t __iomem * iop_data = (uint8_t __iomem *)prbuffer->data;
|
|
int32_t my_empty_len, iop_len, rqbuf_firstindex, rqbuf_lastindex;
|
|
|
|
rqbuf_lastindex = acb->rqbuf_lastindex;
|
|
rqbuf_firstindex = acb->rqbuf_firstindex;
|
|
iop_len = readl(&prbuffer->data_len);
|
|
my_empty_len = (rqbuf_firstindex - rqbuf_lastindex - 1)
|
|
&(ARCMSR_MAX_QBUFFER - 1);
|
|
if (my_empty_len >= iop_len) {
|
|
while (iop_len > 0) {
|
|
acb->rqbuffer[acb->rqbuf_lastindex] = readb(iop_data);
|
|
acb->rqbuf_lastindex++;
|
|
acb->rqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
|
|
iop_data++;
|
|
iop_len--;
|
|
}
|
|
writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK,
|
|
®->inbound_doorbell);
|
|
} else
|
|
acb->acb_flags |= ACB_F_IOPDATA_OVERFLOW;
|
|
}
|
|
if (outbound_doorbell & ARCMSR_OUTBOUND_IOP331_DATA_READ_OK) {
|
|
acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_READED;
|
|
if (acb->wqbuf_firstindex != acb->wqbuf_lastindex) {
|
|
struct QBUFFER __iomem * pwbuffer =
|
|
(struct QBUFFER __iomem *) ®->message_wbuffer;
|
|
uint8_t __iomem * iop_data = (uint8_t __iomem *) pwbuffer->data;
|
|
int32_t allxfer_len = 0;
|
|
|
|
acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED);
|
|
while ((acb->wqbuf_firstindex != acb->wqbuf_lastindex)
|
|
&& (allxfer_len < 124)) {
|
|
writeb(acb->wqbuffer[acb->wqbuf_firstindex], iop_data);
|
|
acb->wqbuf_firstindex++;
|
|
acb->wqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
|
|
iop_data++;
|
|
allxfer_len++;
|
|
}
|
|
writel(allxfer_len, &pwbuffer->data_len);
|
|
writel(ARCMSR_INBOUND_DRIVER_DATA_WRITE_OK,
|
|
®->inbound_doorbell);
|
|
}
|
|
if (acb->wqbuf_firstindex == acb->wqbuf_lastindex)
|
|
acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_CLEARED;
|
|
}
|
|
}
|
|
if (outbound_intstatus & ARCMSR_MU_OUTBOUND_POSTQUEUE_INT) {
|
|
int id, lun;
|
|
/*
|
|
****************************************************************
|
|
** areca cdb command done
|
|
****************************************************************
|
|
*/
|
|
while (1) {
|
|
if ((flag_ccb = readl(®->outbound_queueport)) == 0xFFFFFFFF)
|
|
break;/*chip FIFO no ccb for completion already*/
|
|
/* check if command done with no error*/
|
|
ccb = (struct CommandControlBlock *)(acb->vir2phy_offset +
|
|
(flag_ccb << 5));
|
|
if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) {
|
|
if (ccb->startdone == ARCMSR_CCB_ABORTED) {
|
|
struct scsi_cmnd *abortcmd=ccb->pcmd;
|
|
if (abortcmd) {
|
|
abortcmd->result |= DID_ABORT >> 16;
|
|
arcmsr_ccb_complete(ccb, 1);
|
|
printk(KERN_NOTICE
|
|
"arcmsr%d: ccb='0x%p' isr got aborted command \n"
|
|
, acb->host->host_no, ccb);
|
|
}
|
|
continue;
|
|
}
|
|
printk(KERN_NOTICE
|
|
"arcmsr%d: isr get an illegal ccb command done acb='0x%p'"
|
|
"ccb='0x%p' ccbacb='0x%p' startdone = 0x%x"
|
|
" ccboutstandingcount=%d \n"
|
|
, acb->host->host_no
|
|
, acb
|
|
, ccb
|
|
, ccb->acb
|
|
, ccb->startdone
|
|
, atomic_read(&acb->ccboutstandingcount));
|
|
continue;
|
|
}
|
|
id = ccb->pcmd->device->id;
|
|
lun = ccb->pcmd->device->lun;
|
|
if (!(flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR)) {
|
|
if (acb->devstate[id][lun] == ARECA_RAID_GONE)
|
|
acb->devstate[id][lun] = ARECA_RAID_GOOD;
|
|
ccb->pcmd->result = DID_OK << 16;
|
|
arcmsr_ccb_complete(ccb, 1);
|
|
} else {
|
|
switch(ccb->arcmsr_cdb.DeviceStatus) {
|
|
case ARCMSR_DEV_SELECT_TIMEOUT: {
|
|
acb->devstate[id][lun] = ARECA_RAID_GONE;
|
|
ccb->pcmd->result = DID_TIME_OUT << 16;
|
|
arcmsr_ccb_complete(ccb, 1);
|
|
}
|
|
break;
|
|
case ARCMSR_DEV_ABORTED:
|
|
case ARCMSR_DEV_INIT_FAIL: {
|
|
acb->devstate[id][lun] = ARECA_RAID_GONE;
|
|
ccb->pcmd->result = DID_BAD_TARGET << 16;
|
|
arcmsr_ccb_complete(ccb, 1);
|
|
}
|
|
break;
|
|
case ARCMSR_DEV_CHECK_CONDITION: {
|
|
acb->devstate[id][lun] = ARECA_RAID_GOOD;
|
|
arcmsr_report_sense_info(ccb);
|
|
arcmsr_ccb_complete(ccb, 1);
|
|
}
|
|
break;
|
|
default:
|
|
printk(KERN_NOTICE
|
|
"arcmsr%d: scsi id=%d lun=%d"
|
|
" isr get command error done,"
|
|
"but got unknown DeviceStatus = 0x%x \n"
|
|
, acb->host->host_no
|
|
, id
|
|
, lun
|
|
, ccb->arcmsr_cdb.DeviceStatus);
|
|
acb->devstate[id][lun] = ARECA_RAID_GONE;
|
|
ccb->pcmd->result = DID_NO_CONNECT << 16;
|
|
arcmsr_ccb_complete(ccb, 1);
|
|
break;
|
|
}
|
|
}
|
|
}/*drain reply FIFO*/
|
|
}
|
|
if (!(outbound_intstatus & ARCMSR_MU_OUTBOUND_HANDLE_INT))
|
|
return IRQ_NONE;
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static void arcmsr_iop_parking(struct AdapterControlBlock *acb)
|
|
{
|
|
if (acb) {
|
|
/* stop adapter background rebuild */
|
|
if (acb->acb_flags & ACB_F_MSG_START_BGRB) {
|
|
acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
|
|
arcmsr_stop_adapter_bgrb(acb);
|
|
arcmsr_flush_adapter_cache(acb);
|
|
}
|
|
}
|
|
}
|
|
|
|
static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb, struct scsi_cmnd *cmd)
|
|
{
|
|
struct MessageUnit __iomem *reg = acb->pmu;
|
|
struct CMD_MESSAGE_FIELD *pcmdmessagefld;
|
|
int retvalue = 0, transfer_len = 0;
|
|
char *buffer;
|
|
uint32_t controlcode = (uint32_t ) cmd->cmnd[5] << 24 |
|
|
(uint32_t ) cmd->cmnd[6] << 16 |
|
|
(uint32_t ) cmd->cmnd[7] << 8 |
|
|
(uint32_t ) cmd->cmnd[8];
|
|
/* 4 bytes: Areca io control code */
|
|
if (cmd->use_sg) {
|
|
struct scatterlist *sg = (struct scatterlist *)cmd->request_buffer;
|
|
|
|
buffer = kmap_atomic(sg->page, KM_IRQ0) + sg->offset;
|
|
if (cmd->use_sg > 1) {
|
|
retvalue = ARCMSR_MESSAGE_FAIL;
|
|
goto message_out;
|
|
}
|
|
transfer_len += sg->length;
|
|
} else {
|
|
buffer = cmd->request_buffer;
|
|
transfer_len = cmd->request_bufflen;
|
|
}
|
|
if (transfer_len > sizeof(struct CMD_MESSAGE_FIELD)) {
|
|
retvalue = ARCMSR_MESSAGE_FAIL;
|
|
goto message_out;
|
|
}
|
|
pcmdmessagefld = (struct CMD_MESSAGE_FIELD *) buffer;
|
|
switch(controlcode) {
|
|
case ARCMSR_MESSAGE_READ_RQBUFFER: {
|
|
unsigned long *ver_addr;
|
|
dma_addr_t buf_handle;
|
|
uint8_t *pQbuffer, *ptmpQbuffer;
|
|
int32_t allxfer_len = 0;
|
|
|
|
ver_addr = pci_alloc_consistent(acb->pdev, 1032, &buf_handle);
|
|
if (!ver_addr) {
|
|
retvalue = ARCMSR_MESSAGE_FAIL;
|
|
goto message_out;
|
|
}
|
|
ptmpQbuffer = (uint8_t *) ver_addr;
|
|
while ((acb->rqbuf_firstindex != acb->rqbuf_lastindex)
|
|
&& (allxfer_len < 1031)) {
|
|
pQbuffer = &acb->rqbuffer[acb->rqbuf_firstindex];
|
|
memcpy(ptmpQbuffer, pQbuffer, 1);
|
|
acb->rqbuf_firstindex++;
|
|
acb->rqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
|
|
ptmpQbuffer++;
|
|
allxfer_len++;
|
|
}
|
|
if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
|
|
struct QBUFFER __iomem * prbuffer = (struct QBUFFER __iomem *)
|
|
®->message_rbuffer;
|
|
uint8_t __iomem * iop_data = (uint8_t __iomem *)prbuffer->data;
|
|
int32_t iop_len;
|
|
|
|
acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
|
|
iop_len = readl(&prbuffer->data_len);
|
|
while (iop_len > 0) {
|
|
acb->rqbuffer[acb->rqbuf_lastindex] = readb(iop_data);
|
|
acb->rqbuf_lastindex++;
|
|
acb->rqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
|
|
iop_data++;
|
|
iop_len--;
|
|
}
|
|
writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK,
|
|
®->inbound_doorbell);
|
|
}
|
|
memcpy(pcmdmessagefld->messagedatabuffer,
|
|
(uint8_t *)ver_addr, allxfer_len);
|
|
pcmdmessagefld->cmdmessage.Length = allxfer_len;
|
|
pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK;
|
|
pci_free_consistent(acb->pdev, 1032, ver_addr, buf_handle);
|
|
}
|
|
break;
|
|
case ARCMSR_MESSAGE_WRITE_WQBUFFER: {
|
|
unsigned long *ver_addr;
|
|
dma_addr_t buf_handle;
|
|
int32_t my_empty_len, user_len, wqbuf_firstindex, wqbuf_lastindex;
|
|
uint8_t *pQbuffer, *ptmpuserbuffer;
|
|
|
|
ver_addr = pci_alloc_consistent(acb->pdev, 1032, &buf_handle);
|
|
if (!ver_addr) {
|
|
retvalue = ARCMSR_MESSAGE_FAIL;
|
|
goto message_out;
|
|
}
|
|
ptmpuserbuffer = (uint8_t *)ver_addr;
|
|
user_len = pcmdmessagefld->cmdmessage.Length;
|
|
memcpy(ptmpuserbuffer, pcmdmessagefld->messagedatabuffer, user_len);
|
|
wqbuf_lastindex = acb->wqbuf_lastindex;
|
|
wqbuf_firstindex = acb->wqbuf_firstindex;
|
|
if (wqbuf_lastindex != wqbuf_firstindex) {
|
|
struct SENSE_DATA *sensebuffer =
|
|
(struct SENSE_DATA *)cmd->sense_buffer;
|
|
arcmsr_post_Qbuffer(acb);
|
|
/* has error report sensedata */
|
|
sensebuffer->ErrorCode = 0x70;
|
|
sensebuffer->SenseKey = ILLEGAL_REQUEST;
|
|
sensebuffer->AdditionalSenseLength = 0x0A;
|
|
sensebuffer->AdditionalSenseCode = 0x20;
|
|
sensebuffer->Valid = 1;
|
|
retvalue = ARCMSR_MESSAGE_FAIL;
|
|
} else {
|
|
my_empty_len = (wqbuf_firstindex-wqbuf_lastindex - 1)
|
|
&(ARCMSR_MAX_QBUFFER - 1);
|
|
if (my_empty_len >= user_len) {
|
|
while (user_len > 0) {
|
|
pQbuffer =
|
|
&acb->wqbuffer[acb->wqbuf_lastindex];
|
|
memcpy(pQbuffer, ptmpuserbuffer, 1);
|
|
acb->wqbuf_lastindex++;
|
|
acb->wqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
|
|
ptmpuserbuffer++;
|
|
user_len--;
|
|
}
|
|
if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_CLEARED) {
|
|
acb->acb_flags &=
|
|
~ACB_F_MESSAGE_WQBUFFER_CLEARED;
|
|
arcmsr_post_Qbuffer(acb);
|
|
}
|
|
} else {
|
|
/* has error report sensedata */
|
|
struct SENSE_DATA *sensebuffer =
|
|
(struct SENSE_DATA *)cmd->sense_buffer;
|
|
sensebuffer->ErrorCode = 0x70;
|
|
sensebuffer->SenseKey = ILLEGAL_REQUEST;
|
|
sensebuffer->AdditionalSenseLength = 0x0A;
|
|
sensebuffer->AdditionalSenseCode = 0x20;
|
|
sensebuffer->Valid = 1;
|
|
retvalue = ARCMSR_MESSAGE_FAIL;
|
|
}
|
|
}
|
|
pci_free_consistent(acb->pdev, 1032, ver_addr, buf_handle);
|
|
}
|
|
break;
|
|
case ARCMSR_MESSAGE_CLEAR_RQBUFFER: {
|
|
uint8_t *pQbuffer = acb->rqbuffer;
|
|
|
|
if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
|
|
acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
|
|
writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK,
|
|
®->inbound_doorbell);
|
|
}
|
|
acb->acb_flags |= ACB_F_MESSAGE_RQBUFFER_CLEARED;
|
|
acb->rqbuf_firstindex = 0;
|
|
acb->rqbuf_lastindex = 0;
|
|
memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER);
|
|
pcmdmessagefld->cmdmessage.ReturnCode =
|
|
ARCMSR_MESSAGE_RETURNCODE_OK;
|
|
}
|
|
break;
|
|
case ARCMSR_MESSAGE_CLEAR_WQBUFFER: {
|
|
uint8_t *pQbuffer = acb->wqbuffer;
|
|
|
|
if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
|
|
acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
|
|
writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK
|
|
, ®->inbound_doorbell);
|
|
}
|
|
acb->acb_flags |=
|
|
(ACB_F_MESSAGE_WQBUFFER_CLEARED |
|
|
ACB_F_MESSAGE_WQBUFFER_READED);
|
|
acb->wqbuf_firstindex = 0;
|
|
acb->wqbuf_lastindex = 0;
|
|
memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER);
|
|
pcmdmessagefld->cmdmessage.ReturnCode =
|
|
ARCMSR_MESSAGE_RETURNCODE_OK;
|
|
}
|
|
break;
|
|
case ARCMSR_MESSAGE_CLEAR_ALLQBUFFER: {
|
|
uint8_t *pQbuffer;
|
|
|
|
if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
|
|
acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
|
|
writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK
|
|
, ®->inbound_doorbell);
|
|
}
|
|
acb->acb_flags |=
|
|
(ACB_F_MESSAGE_WQBUFFER_CLEARED
|
|
| ACB_F_MESSAGE_RQBUFFER_CLEARED
|
|
| ACB_F_MESSAGE_WQBUFFER_READED);
|
|
acb->rqbuf_firstindex = 0;
|
|
acb->rqbuf_lastindex = 0;
|
|
acb->wqbuf_firstindex = 0;
|
|
acb->wqbuf_lastindex = 0;
|
|
pQbuffer = acb->rqbuffer;
|
|
memset(pQbuffer, 0, sizeof (struct QBUFFER));
|
|
pQbuffer = acb->wqbuffer;
|
|
memset(pQbuffer, 0, sizeof (struct QBUFFER));
|
|
pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK;
|
|
}
|
|
break;
|
|
case ARCMSR_MESSAGE_RETURN_CODE_3F: {
|
|
pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_3F;
|
|
}
|
|
break;
|
|
case ARCMSR_MESSAGE_SAY_HELLO: {
|
|
int8_t * hello_string = "Hello! I am ARCMSR";
|
|
|
|
memcpy(pcmdmessagefld->messagedatabuffer, hello_string
|
|
, (int16_t)strlen(hello_string));
|
|
pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK;
|
|
}
|
|
break;
|
|
case ARCMSR_MESSAGE_SAY_GOODBYE:
|
|
arcmsr_iop_parking(acb);
|
|
break;
|
|
case ARCMSR_MESSAGE_FLUSH_ADAPTER_CACHE:
|
|
arcmsr_flush_adapter_cache(acb);
|
|
break;
|
|
default:
|
|
retvalue = ARCMSR_MESSAGE_FAIL;
|
|
}
|
|
message_out:
|
|
if (cmd->use_sg) {
|
|
struct scatterlist *sg;
|
|
|
|
sg = (struct scatterlist *) cmd->request_buffer;
|
|
kunmap_atomic(buffer - sg->offset, KM_IRQ0);
|
|
}
|
|
return retvalue;
|
|
}
|
|
|
|
static struct CommandControlBlock *arcmsr_get_freeccb(struct AdapterControlBlock *acb)
|
|
{
|
|
struct list_head *head = &acb->ccb_free_list;
|
|
struct CommandControlBlock *ccb = NULL;
|
|
|
|
if (!list_empty(head)) {
|
|
ccb = list_entry(head->next, struct CommandControlBlock, list);
|
|
list_del(head->next);
|
|
}
|
|
return ccb;
|
|
}
|
|
|
|
static void arcmsr_handle_virtual_command(struct AdapterControlBlock *acb,
|
|
struct scsi_cmnd *cmd)
|
|
{
|
|
switch (cmd->cmnd[0]) {
|
|
case INQUIRY: {
|
|
unsigned char inqdata[36];
|
|
char *buffer;
|
|
|
|
if (cmd->device->lun) {
|
|
cmd->result = (DID_TIME_OUT << 16);
|
|
cmd->scsi_done(cmd);
|
|
return;
|
|
}
|
|
inqdata[0] = TYPE_PROCESSOR;
|
|
/* Periph Qualifier & Periph Dev Type */
|
|
inqdata[1] = 0;
|
|
/* rem media bit & Dev Type Modifier */
|
|
inqdata[2] = 0;
|
|
/* ISO,ECMA,& ANSI versions */
|
|
inqdata[4] = 31;
|
|
/* length of additional data */
|
|
strncpy(&inqdata[8], "Areca ", 8);
|
|
/* Vendor Identification */
|
|
strncpy(&inqdata[16], "RAID controller ", 16);
|
|
/* Product Identification */
|
|
strncpy(&inqdata[32], "R001", 4); /* Product Revision */
|
|
if (cmd->use_sg) {
|
|
struct scatterlist *sg;
|
|
|
|
sg = (struct scatterlist *) cmd->request_buffer;
|
|
buffer = kmap_atomic(sg->page, KM_IRQ0) + sg->offset;
|
|
} else {
|
|
buffer = cmd->request_buffer;
|
|
}
|
|
memcpy(buffer, inqdata, sizeof(inqdata));
|
|
if (cmd->use_sg) {
|
|
struct scatterlist *sg;
|
|
|
|
sg = (struct scatterlist *) cmd->request_buffer;
|
|
kunmap_atomic(buffer - sg->offset, KM_IRQ0);
|
|
}
|
|
cmd->scsi_done(cmd);
|
|
}
|
|
break;
|
|
case WRITE_BUFFER:
|
|
case READ_BUFFER: {
|
|
if (arcmsr_iop_message_xfer(acb, cmd))
|
|
cmd->result = (DID_ERROR << 16);
|
|
cmd->scsi_done(cmd);
|
|
}
|
|
break;
|
|
default:
|
|
cmd->scsi_done(cmd);
|
|
}
|
|
}
|
|
|
|
static int arcmsr_queue_command(struct scsi_cmnd *cmd,
|
|
void (* done)(struct scsi_cmnd *))
|
|
{
|
|
struct Scsi_Host *host = cmd->device->host;
|
|
struct AdapterControlBlock *acb =
|
|
(struct AdapterControlBlock *) host->hostdata;
|
|
struct CommandControlBlock *ccb;
|
|
int target = cmd->device->id;
|
|
int lun = cmd->device->lun;
|
|
|
|
cmd->scsi_done = done;
|
|
cmd->host_scribble = NULL;
|
|
cmd->result = 0;
|
|
if (acb->acb_flags & ACB_F_BUS_RESET) {
|
|
printk(KERN_NOTICE "arcmsr%d: bus reset"
|
|
" and return busy \n"
|
|
, acb->host->host_no);
|
|
return SCSI_MLQUEUE_HOST_BUSY;
|
|
}
|
|
if(target == 16) {
|
|
/* virtual device for iop message transfer */
|
|
arcmsr_handle_virtual_command(acb, cmd);
|
|
return 0;
|
|
}
|
|
if (acb->devstate[target][lun] == ARECA_RAID_GONE) {
|
|
uint8_t block_cmd;
|
|
|
|
block_cmd = cmd->cmnd[0] & 0x0f;
|
|
if (block_cmd == 0x08 || block_cmd == 0x0a) {
|
|
printk(KERN_NOTICE
|
|
"arcmsr%d: block 'read/write'"
|
|
"command with gone raid volume"
|
|
" Cmd=%2x, TargetId=%d, Lun=%d \n"
|
|
, acb->host->host_no
|
|
, cmd->cmnd[0]
|
|
, target, lun);
|
|
cmd->result = (DID_NO_CONNECT << 16);
|
|
cmd->scsi_done(cmd);
|
|
return 0;
|
|
}
|
|
}
|
|
if (atomic_read(&acb->ccboutstandingcount) >=
|
|
ARCMSR_MAX_OUTSTANDING_CMD)
|
|
return SCSI_MLQUEUE_HOST_BUSY;
|
|
|
|
ccb = arcmsr_get_freeccb(acb);
|
|
if (!ccb)
|
|
return SCSI_MLQUEUE_HOST_BUSY;
|
|
arcmsr_build_ccb(acb, ccb, cmd);
|
|
arcmsr_post_ccb(acb, ccb);
|
|
return 0;
|
|
}
|
|
|
|
static void arcmsr_get_firmware_spec(struct AdapterControlBlock *acb)
|
|
{
|
|
struct MessageUnit __iomem *reg = acb->pmu;
|
|
char *acb_firm_model = acb->firm_model;
|
|
char *acb_firm_version = acb->firm_version;
|
|
char __iomem *iop_firm_model = (char __iomem *) ®->message_rwbuffer[15];
|
|
char __iomem *iop_firm_version = (char __iomem *) ®->message_rwbuffer[17];
|
|
int count;
|
|
|
|
writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, ®->inbound_msgaddr0);
|
|
if (arcmsr_wait_msgint_ready(acb))
|
|
printk(KERN_NOTICE
|
|
"arcmsr%d: wait "
|
|
"'get adapter firmware miscellaneous data' timeout \n"
|
|
, acb->host->host_no);
|
|
count = 8;
|
|
while (count) {
|
|
*acb_firm_model = readb(iop_firm_model);
|
|
acb_firm_model++;
|
|
iop_firm_model++;
|
|
count--;
|
|
}
|
|
count = 16;
|
|
while (count) {
|
|
*acb_firm_version = readb(iop_firm_version);
|
|
acb_firm_version++;
|
|
iop_firm_version++;
|
|
count--;
|
|
}
|
|
printk(KERN_INFO
|
|
"ARECA RAID ADAPTER%d: FIRMWARE VERSION %s \n"
|
|
, acb->host->host_no
|
|
, acb->firm_version);
|
|
acb->firm_request_len = readl(®->message_rwbuffer[1]);
|
|
acb->firm_numbers_queue = readl(®->message_rwbuffer[2]);
|
|
acb->firm_sdram_size = readl(®->message_rwbuffer[3]);
|
|
acb->firm_hd_channels = readl(®->message_rwbuffer[4]);
|
|
}
|
|
|
|
static void arcmsr_polling_ccbdone(struct AdapterControlBlock *acb,
|
|
struct CommandControlBlock *poll_ccb)
|
|
{
|
|
struct MessageUnit __iomem *reg = acb->pmu;
|
|
struct CommandControlBlock *ccb;
|
|
uint32_t flag_ccb, outbound_intstatus, poll_ccb_done = 0, poll_count = 0;
|
|
int id, lun;
|
|
|
|
polling_ccb_retry:
|
|
poll_count++;
|
|
outbound_intstatus = readl(®->outbound_intstatus)
|
|
& acb->outbound_int_enable;
|
|
writel(outbound_intstatus, ®->outbound_intstatus);/*clear interrupt*/
|
|
while (1) {
|
|
if ((flag_ccb = readl(®->outbound_queueport)) == 0xFFFFFFFF) {
|
|
if (poll_ccb_done)
|
|
break;
|
|
else {
|
|
msleep(25);
|
|
if (poll_count > 100)
|
|
break;
|
|
goto polling_ccb_retry;
|
|
}
|
|
}
|
|
ccb = (struct CommandControlBlock *)
|
|
(acb->vir2phy_offset + (flag_ccb << 5));
|
|
if ((ccb->acb != acb) ||
|
|
(ccb->startdone != ARCMSR_CCB_START)) {
|
|
if ((ccb->startdone == ARCMSR_CCB_ABORTED) ||
|
|
(ccb == poll_ccb)) {
|
|
printk(KERN_NOTICE
|
|
"arcmsr%d: scsi id=%d lun=%d ccb='0x%p'"
|
|
" poll command abort successfully \n"
|
|
, acb->host->host_no
|
|
, ccb->pcmd->device->id
|
|
, ccb->pcmd->device->lun
|
|
, ccb);
|
|
ccb->pcmd->result = DID_ABORT << 16;
|
|
arcmsr_ccb_complete(ccb, 1);
|
|
poll_ccb_done = 1;
|
|
continue;
|
|
}
|
|
printk(KERN_NOTICE
|
|
"arcmsr%d: polling get an illegal ccb"
|
|
" command done ccb='0x%p'"
|
|
"ccboutstandingcount=%d \n"
|
|
, acb->host->host_no
|
|
, ccb
|
|
, atomic_read(&acb->ccboutstandingcount));
|
|
continue;
|
|
}
|
|
id = ccb->pcmd->device->id;
|
|
lun = ccb->pcmd->device->lun;
|
|
if (!(flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR)) {
|
|
if (acb->devstate[id][lun] == ARECA_RAID_GONE)
|
|
acb->devstate[id][lun] = ARECA_RAID_GOOD;
|
|
ccb->pcmd->result = DID_OK << 16;
|
|
arcmsr_ccb_complete(ccb, 1);
|
|
} else {
|
|
switch(ccb->arcmsr_cdb.DeviceStatus) {
|
|
case ARCMSR_DEV_SELECT_TIMEOUT: {
|
|
acb->devstate[id][lun] = ARECA_RAID_GONE;
|
|
ccb->pcmd->result = DID_TIME_OUT << 16;
|
|
arcmsr_ccb_complete(ccb, 1);
|
|
}
|
|
break;
|
|
case ARCMSR_DEV_ABORTED:
|
|
case ARCMSR_DEV_INIT_FAIL: {
|
|
acb->devstate[id][lun] = ARECA_RAID_GONE;
|
|
ccb->pcmd->result = DID_BAD_TARGET << 16;
|
|
arcmsr_ccb_complete(ccb, 1);
|
|
}
|
|
break;
|
|
case ARCMSR_DEV_CHECK_CONDITION: {
|
|
acb->devstate[id][lun] = ARECA_RAID_GOOD;
|
|
arcmsr_report_sense_info(ccb);
|
|
arcmsr_ccb_complete(ccb, 1);
|
|
}
|
|
break;
|
|
default:
|
|
printk(KERN_NOTICE
|
|
"arcmsr%d: scsi id=%d lun=%d"
|
|
" polling and getting command error done"
|
|
"but got unknown DeviceStatus = 0x%x \n"
|
|
, acb->host->host_no
|
|
, id
|
|
, lun
|
|
, ccb->arcmsr_cdb.DeviceStatus);
|
|
acb->devstate[id][lun] = ARECA_RAID_GONE;
|
|
ccb->pcmd->result = DID_BAD_TARGET << 16;
|
|
arcmsr_ccb_complete(ccb, 1);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static void arcmsr_iop_init(struct AdapterControlBlock *acb)
|
|
{
|
|
struct MessageUnit __iomem *reg = acb->pmu;
|
|
uint32_t intmask_org, mask, outbound_doorbell, firmware_state = 0;
|
|
|
|
do {
|
|
firmware_state = readl(®->outbound_msgaddr1);
|
|
} while (!(firmware_state & ARCMSR_OUTBOUND_MESG1_FIRMWARE_OK));
|
|
intmask_org = readl(®->outbound_intmask)
|
|
| ARCMSR_MU_OUTBOUND_MESSAGE0_INTMASKENABLE;
|
|
arcmsr_get_firmware_spec(acb);
|
|
|
|
acb->acb_flags |= ACB_F_MSG_START_BGRB;
|
|
writel(ARCMSR_INBOUND_MESG0_START_BGRB, ®->inbound_msgaddr0);
|
|
if (arcmsr_wait_msgint_ready(acb)) {
|
|
printk(KERN_NOTICE "arcmsr%d: "
|
|
"wait 'start adapter background rebulid' timeout\n",
|
|
acb->host->host_no);
|
|
}
|
|
|
|
outbound_doorbell = readl(®->outbound_doorbell);
|
|
writel(outbound_doorbell, ®->outbound_doorbell);
|
|
writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, ®->inbound_doorbell);
|
|
mask = ~(ARCMSR_MU_OUTBOUND_POSTQUEUE_INTMASKENABLE
|
|
| ARCMSR_MU_OUTBOUND_DOORBELL_INTMASKENABLE);
|
|
writel(intmask_org & mask, ®->outbound_intmask);
|
|
acb->outbound_int_enable = ~(intmask_org & mask) & 0x000000ff;
|
|
acb->acb_flags |= ACB_F_IOP_INITED;
|
|
}
|
|
|
|
static void arcmsr_iop_reset(struct AdapterControlBlock *acb)
|
|
{
|
|
struct MessageUnit __iomem *reg = acb->pmu;
|
|
struct CommandControlBlock *ccb;
|
|
uint32_t intmask_org;
|
|
int i = 0;
|
|
|
|
if (atomic_read(&acb->ccboutstandingcount) != 0) {
|
|
/* talk to iop 331 outstanding command aborted */
|
|
arcmsr_abort_allcmd(acb);
|
|
/* wait for 3 sec for all command aborted*/
|
|
msleep_interruptible(3000);
|
|
/* disable all outbound interrupt */
|
|
intmask_org = arcmsr_disable_outbound_ints(acb);
|
|
/* clear all outbound posted Q */
|
|
for (i = 0; i < ARCMSR_MAX_OUTSTANDING_CMD; i++)
|
|
readl(®->outbound_queueport);
|
|
for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
|
|
ccb = acb->pccb_pool[i];
|
|
if ((ccb->startdone == ARCMSR_CCB_START) ||
|
|
(ccb->startdone == ARCMSR_CCB_ABORTED)) {
|
|
ccb->startdone = ARCMSR_CCB_ABORTED;
|
|
ccb->pcmd->result = DID_ABORT << 16;
|
|
arcmsr_ccb_complete(ccb, 1);
|
|
}
|
|
}
|
|
/* enable all outbound interrupt */
|
|
arcmsr_enable_outbound_ints(acb, intmask_org);
|
|
}
|
|
atomic_set(&acb->ccboutstandingcount, 0);
|
|
}
|
|
|
|
static int arcmsr_bus_reset(struct scsi_cmnd *cmd)
|
|
{
|
|
struct AdapterControlBlock *acb =
|
|
(struct AdapterControlBlock *)cmd->device->host->hostdata;
|
|
int i;
|
|
|
|
acb->num_resets++;
|
|
acb->acb_flags |= ACB_F_BUS_RESET;
|
|
for (i = 0; i < 400; i++) {
|
|
if (!atomic_read(&acb->ccboutstandingcount))
|
|
break;
|
|
arcmsr_interrupt(acb);
|
|
msleep(25);
|
|
}
|
|
arcmsr_iop_reset(acb);
|
|
acb->acb_flags &= ~ACB_F_BUS_RESET;
|
|
return SUCCESS;
|
|
}
|
|
|
|
static void arcmsr_abort_one_cmd(struct AdapterControlBlock *acb,
|
|
struct CommandControlBlock *ccb)
|
|
{
|
|
u32 intmask;
|
|
|
|
ccb->startdone = ARCMSR_CCB_ABORTED;
|
|
|
|
/*
|
|
** Wait for 3 sec for all command done.
|
|
*/
|
|
msleep_interruptible(3000);
|
|
|
|
intmask = arcmsr_disable_outbound_ints(acb);
|
|
arcmsr_polling_ccbdone(acb, ccb);
|
|
arcmsr_enable_outbound_ints(acb, intmask);
|
|
}
|
|
|
|
static int arcmsr_abort(struct scsi_cmnd *cmd)
|
|
{
|
|
struct AdapterControlBlock *acb =
|
|
(struct AdapterControlBlock *)cmd->device->host->hostdata;
|
|
int i = 0;
|
|
|
|
printk(KERN_NOTICE
|
|
"arcmsr%d: abort device command of scsi id=%d lun=%d \n",
|
|
acb->host->host_no, cmd->device->id, cmd->device->lun);
|
|
acb->num_aborts++;
|
|
|
|
/*
|
|
************************************************
|
|
** the all interrupt service routine is locked
|
|
** we need to handle it as soon as possible and exit
|
|
************************************************
|
|
*/
|
|
if (!atomic_read(&acb->ccboutstandingcount))
|
|
return SUCCESS;
|
|
|
|
for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
|
|
struct CommandControlBlock *ccb = acb->pccb_pool[i];
|
|
if (ccb->startdone == ARCMSR_CCB_START && ccb->pcmd == cmd) {
|
|
arcmsr_abort_one_cmd(acb, ccb);
|
|
break;
|
|
}
|
|
}
|
|
|
|
return SUCCESS;
|
|
}
|
|
|
|
static const char *arcmsr_info(struct Scsi_Host *host)
|
|
{
|
|
struct AdapterControlBlock *acb =
|
|
(struct AdapterControlBlock *) host->hostdata;
|
|
static char buf[256];
|
|
char *type;
|
|
int raid6 = 1;
|
|
|
|
switch (acb->pdev->device) {
|
|
case PCI_DEVICE_ID_ARECA_1110:
|
|
case PCI_DEVICE_ID_ARECA_1210:
|
|
raid6 = 0;
|
|
/*FALLTHRU*/
|
|
case PCI_DEVICE_ID_ARECA_1120:
|
|
case PCI_DEVICE_ID_ARECA_1130:
|
|
case PCI_DEVICE_ID_ARECA_1160:
|
|
case PCI_DEVICE_ID_ARECA_1170:
|
|
case PCI_DEVICE_ID_ARECA_1220:
|
|
case PCI_DEVICE_ID_ARECA_1230:
|
|
case PCI_DEVICE_ID_ARECA_1260:
|
|
case PCI_DEVICE_ID_ARECA_1270:
|
|
case PCI_DEVICE_ID_ARECA_1280:
|
|
type = "SATA";
|
|
break;
|
|
case PCI_DEVICE_ID_ARECA_1380:
|
|
case PCI_DEVICE_ID_ARECA_1381:
|
|
case PCI_DEVICE_ID_ARECA_1680:
|
|
case PCI_DEVICE_ID_ARECA_1681:
|
|
type = "SAS";
|
|
break;
|
|
default:
|
|
type = "X-TYPE";
|
|
break;
|
|
}
|
|
sprintf(buf, "Areca %s Host Adapter RAID Controller%s\n %s",
|
|
type, raid6 ? "( RAID6 capable)" : "",
|
|
ARCMSR_DRIVER_VERSION);
|
|
return buf;
|
|
}
|
|
|
|
|