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![Yang Li](/assets/img/avatar_default.png)
Fix the following coccicheck warning: ./drivers/scsi/3w-sas.c:866:5-11: Unneeded variable: "retval". Return "1" on line 898 Link: https://lore.kernel.org/r/1615272064-42109-1-git-send-email-yang.lee@linux.alibaba.com Reported-by: Abaci Robot <abaci@linux.alibaba.com> Signed-off-by: Yang Li <yang.lee@linux.alibaba.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
1862 lines
57 KiB
C
1862 lines
57 KiB
C
/*
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3w-sas.c -- LSI 3ware SAS/SATA-RAID Controller device driver for Linux.
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Written By: Adam Radford <aradford@gmail.com>
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Copyright (C) 2009 LSI Corporation.
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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 as published by
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the Free Software Foundation; version 2 of the License.
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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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NO WARRANTY
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THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
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CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
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LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
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MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
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solely responsible for determining the appropriateness of using and
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distributing the Program and assumes all risks associated with its
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exercise of rights under this Agreement, including but not limited to
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the risks and costs of program errors, damage to or loss of data,
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programs or equipment, and unavailability or interruption of operations.
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DISCLAIMER OF LIABILITY
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NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
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DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
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ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
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TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
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USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
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HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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Controllers supported by this driver:
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LSI 3ware 9750 6Gb/s SAS/SATA-RAID
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Bugs/Comments/Suggestions should be mailed to:
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aradford@gmail.com
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History
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-------
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3.26.02.000 - Initial driver release.
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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/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/pci.h>
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#include <linux/time.h>
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#include <linux/mutex.h>
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#include <linux/slab.h>
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#include <asm/io.h>
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#include <asm/irq.h>
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#include <linux/uaccess.h>
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#include <scsi/scsi.h>
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#include <scsi/scsi_host.h>
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#include <scsi/scsi_tcq.h>
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#include <scsi/scsi_cmnd.h>
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#include "3w-sas.h"
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/* Globals */
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#define TW_DRIVER_VERSION "3.26.02.000"
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static DEFINE_MUTEX(twl_chrdev_mutex);
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static TW_Device_Extension *twl_device_extension_list[TW_MAX_SLOT];
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static unsigned int twl_device_extension_count;
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static int twl_major = -1;
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extern struct timezone sys_tz;
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/* Module parameters */
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MODULE_AUTHOR ("LSI");
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MODULE_DESCRIPTION ("LSI 3ware SAS/SATA-RAID Linux Driver");
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MODULE_LICENSE("GPL");
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MODULE_VERSION(TW_DRIVER_VERSION);
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static int use_msi;
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module_param(use_msi, int, S_IRUGO);
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MODULE_PARM_DESC(use_msi, "Use Message Signaled Interrupts. Default: 0");
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/* Function prototypes */
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static int twl_reset_device_extension(TW_Device_Extension *tw_dev, int ioctl_reset);
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/* Functions */
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/* This function returns AENs through sysfs */
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static ssize_t twl_sysfs_aen_read(struct file *filp, struct kobject *kobj,
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struct bin_attribute *bin_attr,
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char *outbuf, loff_t offset, 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 *shost = class_to_shost(dev);
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TW_Device_Extension *tw_dev = (TW_Device_Extension *)shost->hostdata;
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unsigned long flags = 0;
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ssize_t ret;
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if (!capable(CAP_SYS_ADMIN))
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return -EACCES;
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spin_lock_irqsave(tw_dev->host->host_lock, flags);
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ret = memory_read_from_buffer(outbuf, count, &offset, tw_dev->event_queue[0], sizeof(TW_Event) * TW_Q_LENGTH);
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spin_unlock_irqrestore(tw_dev->host->host_lock, flags);
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return ret;
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} /* End twl_sysfs_aen_read() */
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/* aen_read sysfs attribute initializer */
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static struct bin_attribute twl_sysfs_aen_read_attr = {
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.attr = {
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.name = "3ware_aen_read",
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.mode = S_IRUSR,
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},
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.size = 0,
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.read = twl_sysfs_aen_read
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};
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/* This function returns driver compatibility info through sysfs */
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static ssize_t twl_sysfs_compat_info(struct file *filp, struct kobject *kobj,
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struct bin_attribute *bin_attr,
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char *outbuf, loff_t offset, 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 *shost = class_to_shost(dev);
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TW_Device_Extension *tw_dev = (TW_Device_Extension *)shost->hostdata;
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unsigned long flags = 0;
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ssize_t ret;
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if (!capable(CAP_SYS_ADMIN))
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return -EACCES;
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spin_lock_irqsave(tw_dev->host->host_lock, flags);
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ret = memory_read_from_buffer(outbuf, count, &offset, &tw_dev->tw_compat_info, sizeof(TW_Compatibility_Info));
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spin_unlock_irqrestore(tw_dev->host->host_lock, flags);
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return ret;
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} /* End twl_sysfs_compat_info() */
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/* compat_info sysfs attribute initializer */
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static struct bin_attribute twl_sysfs_compat_info_attr = {
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.attr = {
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.name = "3ware_compat_info",
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.mode = S_IRUSR,
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},
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.size = 0,
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.read = twl_sysfs_compat_info
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};
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/* Show some statistics about the card */
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static ssize_t twl_show_stats(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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TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata;
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unsigned long flags = 0;
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ssize_t len;
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spin_lock_irqsave(tw_dev->host->host_lock, flags);
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len = snprintf(buf, PAGE_SIZE, "3w-sas Driver version: %s\n"
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"Current commands posted: %4d\n"
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"Max commands posted: %4d\n"
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"Last sgl length: %4d\n"
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"Max sgl length: %4d\n"
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"Last sector count: %4d\n"
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"Max sector count: %4d\n"
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"SCSI Host Resets: %4d\n"
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"AEN's: %4d\n",
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TW_DRIVER_VERSION,
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tw_dev->posted_request_count,
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tw_dev->max_posted_request_count,
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tw_dev->sgl_entries,
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tw_dev->max_sgl_entries,
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tw_dev->sector_count,
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tw_dev->max_sector_count,
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tw_dev->num_resets,
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tw_dev->aen_count);
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spin_unlock_irqrestore(tw_dev->host->host_lock, flags);
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return len;
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} /* End twl_show_stats() */
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/* stats sysfs attribute initializer */
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static struct device_attribute twl_host_stats_attr = {
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.attr = {
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.name = "3ware_stats",
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.mode = S_IRUGO,
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},
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.show = twl_show_stats
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};
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/* Host attributes initializer */
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static struct device_attribute *twl_host_attrs[] = {
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&twl_host_stats_attr,
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NULL,
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};
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/* This function will look up an AEN severity string */
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static char *twl_aen_severity_lookup(unsigned char severity_code)
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{
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char *retval = NULL;
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if ((severity_code < (unsigned char) TW_AEN_SEVERITY_ERROR) ||
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(severity_code > (unsigned char) TW_AEN_SEVERITY_DEBUG))
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goto out;
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retval = twl_aen_severity_table[severity_code];
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out:
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return retval;
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} /* End twl_aen_severity_lookup() */
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/* This function will queue an event */
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static void twl_aen_queue_event(TW_Device_Extension *tw_dev, TW_Command_Apache_Header *header)
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{
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u32 local_time;
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TW_Event *event;
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unsigned short aen;
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char host[16];
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char *error_str;
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tw_dev->aen_count++;
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/* Fill out event info */
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event = tw_dev->event_queue[tw_dev->error_index];
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host[0] = '\0';
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if (tw_dev->host)
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sprintf(host, " scsi%d:", tw_dev->host->host_no);
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aen = le16_to_cpu(header->status_block.error);
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memset(event, 0, sizeof(TW_Event));
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event->severity = TW_SEV_OUT(header->status_block.severity__reserved);
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/* event->time_stamp_sec overflows in y2106 */
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local_time = (u32)(ktime_get_real_seconds() - (sys_tz.tz_minuteswest * 60));
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event->time_stamp_sec = local_time;
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event->aen_code = aen;
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event->retrieved = TW_AEN_NOT_RETRIEVED;
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event->sequence_id = tw_dev->error_sequence_id;
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tw_dev->error_sequence_id++;
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/* Check for embedded error string */
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error_str = &(header->err_specific_desc[strlen(header->err_specific_desc)+1]);
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header->err_specific_desc[sizeof(header->err_specific_desc) - 1] = '\0';
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event->parameter_len = strlen(header->err_specific_desc);
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memcpy(event->parameter_data, header->err_specific_desc, event->parameter_len + 1 + strlen(error_str));
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if (event->severity != TW_AEN_SEVERITY_DEBUG)
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printk(KERN_WARNING "3w-sas:%s AEN: %s (0x%02X:0x%04X): %s:%s.\n",
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host,
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twl_aen_severity_lookup(TW_SEV_OUT(header->status_block.severity__reserved)),
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TW_MESSAGE_SOURCE_CONTROLLER_EVENT, aen, error_str,
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header->err_specific_desc);
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else
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tw_dev->aen_count--;
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tw_dev->error_index = (tw_dev->error_index + 1 ) % TW_Q_LENGTH;
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} /* End twl_aen_queue_event() */
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/* This function will attempt to post a command packet to the board */
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static int twl_post_command_packet(TW_Device_Extension *tw_dev, int request_id)
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{
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dma_addr_t command_que_value;
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command_que_value = tw_dev->command_packet_phys[request_id];
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command_que_value += TW_COMMAND_OFFSET;
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/* First write upper 4 bytes */
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writel((u32)((u64)command_que_value >> 32), TWL_HIBQPH_REG_ADDR(tw_dev));
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/* Then the lower 4 bytes */
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writel((u32)(command_que_value | TWL_PULL_MODE), TWL_HIBQPL_REG_ADDR(tw_dev));
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tw_dev->state[request_id] = TW_S_POSTED;
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tw_dev->posted_request_count++;
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if (tw_dev->posted_request_count > tw_dev->max_posted_request_count)
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tw_dev->max_posted_request_count = tw_dev->posted_request_count;
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return 0;
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} /* End twl_post_command_packet() */
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/* This function hands scsi cdb's to the firmware */
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static int twl_scsiop_execute_scsi(TW_Device_Extension *tw_dev, int request_id,
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unsigned char *cdb, int use_sg,
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TW_SG_Entry_ISO *sglistarg)
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{
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TW_Command_Full *full_command_packet;
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TW_Command_Apache *command_packet;
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int i, sg_count;
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struct scsi_cmnd *srb = NULL;
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struct scatterlist *sg;
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int retval = 1;
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if (tw_dev->srb[request_id])
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srb = tw_dev->srb[request_id];
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/* Initialize command packet */
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full_command_packet = tw_dev->command_packet_virt[request_id];
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full_command_packet->header.header_desc.size_header = 128;
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full_command_packet->header.status_block.error = 0;
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full_command_packet->header.status_block.severity__reserved = 0;
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command_packet = &full_command_packet->command.newcommand;
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command_packet->status = 0;
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command_packet->opcode__reserved = TW_OPRES_IN(0, TW_OP_EXECUTE_SCSI);
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/* We forced 16 byte cdb use earlier */
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if (!cdb)
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memcpy(command_packet->cdb, srb->cmnd, TW_MAX_CDB_LEN);
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else
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memcpy(command_packet->cdb, cdb, TW_MAX_CDB_LEN);
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if (srb) {
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command_packet->unit = srb->device->id;
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command_packet->request_id__lunl =
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cpu_to_le16(TW_REQ_LUN_IN(srb->device->lun, request_id));
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} else {
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command_packet->request_id__lunl =
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cpu_to_le16(TW_REQ_LUN_IN(0, request_id));
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command_packet->unit = 0;
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}
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command_packet->sgl_offset = 16;
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if (!sglistarg) {
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/* Map sglist from scsi layer to cmd packet */
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if (scsi_sg_count(srb)) {
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sg_count = scsi_dma_map(srb);
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if (sg_count <= 0)
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goto out;
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scsi_for_each_sg(srb, sg, sg_count, i) {
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command_packet->sg_list[i].address = TW_CPU_TO_SGL(sg_dma_address(sg));
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command_packet->sg_list[i].length = TW_CPU_TO_SGL(sg_dma_len(sg));
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}
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command_packet->sgl_entries__lunh = cpu_to_le16(TW_REQ_LUN_IN((srb->device->lun >> 4), scsi_sg_count(tw_dev->srb[request_id])));
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}
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} else {
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/* Internal cdb post */
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for (i = 0; i < use_sg; i++) {
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command_packet->sg_list[i].address = TW_CPU_TO_SGL(sglistarg[i].address);
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command_packet->sg_list[i].length = TW_CPU_TO_SGL(sglistarg[i].length);
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}
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command_packet->sgl_entries__lunh = cpu_to_le16(TW_REQ_LUN_IN(0, use_sg));
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}
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/* Update some stats */
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if (srb) {
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tw_dev->sector_count = scsi_bufflen(srb) / 512;
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if (tw_dev->sector_count > tw_dev->max_sector_count)
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tw_dev->max_sector_count = tw_dev->sector_count;
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tw_dev->sgl_entries = scsi_sg_count(srb);
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if (tw_dev->sgl_entries > tw_dev->max_sgl_entries)
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tw_dev->max_sgl_entries = tw_dev->sgl_entries;
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}
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/* Now post the command to the board */
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retval = twl_post_command_packet(tw_dev, request_id);
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out:
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return retval;
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} /* End twl_scsiop_execute_scsi() */
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/* This function will read the aen queue from the isr */
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static int twl_aen_read_queue(TW_Device_Extension *tw_dev, int request_id)
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{
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unsigned char cdb[TW_MAX_CDB_LEN];
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TW_SG_Entry_ISO sglist[1];
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TW_Command_Full *full_command_packet;
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int retval = 1;
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full_command_packet = tw_dev->command_packet_virt[request_id];
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memset(full_command_packet, 0, sizeof(TW_Command_Full));
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/* Initialize cdb */
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memset(&cdb, 0, TW_MAX_CDB_LEN);
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cdb[0] = REQUEST_SENSE; /* opcode */
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cdb[4] = TW_ALLOCATION_LENGTH; /* allocation length */
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/* Initialize sglist */
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memset(&sglist, 0, sizeof(TW_SG_Entry_ISO));
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sglist[0].length = TW_SECTOR_SIZE;
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sglist[0].address = tw_dev->generic_buffer_phys[request_id];
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/* Mark internal command */
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tw_dev->srb[request_id] = NULL;
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/* Now post the command packet */
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if (twl_scsiop_execute_scsi(tw_dev, request_id, cdb, 1, sglist)) {
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TW_PRINTK(tw_dev->host, TW_DRIVER, 0x2, "Post failed while reading AEN queue");
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goto out;
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}
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retval = 0;
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out:
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return retval;
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} /* End twl_aen_read_queue() */
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|
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/* This function will sync firmware time with the host time */
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static void twl_aen_sync_time(TW_Device_Extension *tw_dev, int request_id)
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{
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u32 schedulertime;
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TW_Command_Full *full_command_packet;
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TW_Command *command_packet;
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TW_Param_Apache *param;
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time64_t local_time;
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/* Fill out the command packet */
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full_command_packet = tw_dev->command_packet_virt[request_id];
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memset(full_command_packet, 0, sizeof(TW_Command_Full));
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command_packet = &full_command_packet->command.oldcommand;
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command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_SET_PARAM);
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command_packet->request_id = request_id;
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command_packet->byte8_offset.param.sgl[0].address = TW_CPU_TO_SGL(tw_dev->generic_buffer_phys[request_id]);
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command_packet->byte8_offset.param.sgl[0].length = TW_CPU_TO_SGL(TW_SECTOR_SIZE);
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command_packet->size = TW_COMMAND_SIZE;
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command_packet->byte6_offset.parameter_count = cpu_to_le16(1);
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|
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/* Setup the param */
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param = (TW_Param_Apache *)tw_dev->generic_buffer_virt[request_id];
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memset(param, 0, TW_SECTOR_SIZE);
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param->table_id = cpu_to_le16(TW_TIMEKEEP_TABLE | 0x8000); /* Controller time keep table */
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param->parameter_id = cpu_to_le16(0x3); /* SchedulerTime */
|
|
param->parameter_size_bytes = cpu_to_le16(4);
|
|
|
|
/* Convert system time in UTC to local time seconds since last
|
|
Sunday 12:00AM */
|
|
local_time = (ktime_get_real_seconds() - (sys_tz.tz_minuteswest * 60));
|
|
div_u64_rem(local_time - (3 * 86400), 604800, &schedulertime);
|
|
schedulertime = cpu_to_le32(schedulertime);
|
|
|
|
memcpy(param->data, &schedulertime, sizeof(u32));
|
|
|
|
/* Mark internal command */
|
|
tw_dev->srb[request_id] = NULL;
|
|
|
|
/* Now post the command */
|
|
twl_post_command_packet(tw_dev, request_id);
|
|
} /* End twl_aen_sync_time() */
|
|
|
|
/* This function will assign an available request id */
|
|
static void twl_get_request_id(TW_Device_Extension *tw_dev, int *request_id)
|
|
{
|
|
*request_id = tw_dev->free_queue[tw_dev->free_head];
|
|
tw_dev->free_head = (tw_dev->free_head + 1) % TW_Q_LENGTH;
|
|
tw_dev->state[*request_id] = TW_S_STARTED;
|
|
} /* End twl_get_request_id() */
|
|
|
|
/* This function will free a request id */
|
|
static void twl_free_request_id(TW_Device_Extension *tw_dev, int request_id)
|
|
{
|
|
tw_dev->free_queue[tw_dev->free_tail] = request_id;
|
|
tw_dev->state[request_id] = TW_S_FINISHED;
|
|
tw_dev->free_tail = (tw_dev->free_tail + 1) % TW_Q_LENGTH;
|
|
} /* End twl_free_request_id() */
|
|
|
|
/* This function will complete an aen request from the isr */
|
|
static int twl_aen_complete(TW_Device_Extension *tw_dev, int request_id)
|
|
{
|
|
TW_Command_Full *full_command_packet;
|
|
TW_Command *command_packet;
|
|
TW_Command_Apache_Header *header;
|
|
unsigned short aen;
|
|
int retval = 1;
|
|
|
|
header = (TW_Command_Apache_Header *)tw_dev->generic_buffer_virt[request_id];
|
|
tw_dev->posted_request_count--;
|
|
aen = le16_to_cpu(header->status_block.error);
|
|
full_command_packet = tw_dev->command_packet_virt[request_id];
|
|
command_packet = &full_command_packet->command.oldcommand;
|
|
|
|
/* First check for internal completion of set param for time sync */
|
|
if (TW_OP_OUT(command_packet->opcode__sgloffset) == TW_OP_SET_PARAM) {
|
|
/* Keep reading the queue in case there are more aen's */
|
|
if (twl_aen_read_queue(tw_dev, request_id))
|
|
goto out2;
|
|
else {
|
|
retval = 0;
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
switch (aen) {
|
|
case TW_AEN_QUEUE_EMPTY:
|
|
/* Quit reading the queue if this is the last one */
|
|
break;
|
|
case TW_AEN_SYNC_TIME_WITH_HOST:
|
|
twl_aen_sync_time(tw_dev, request_id);
|
|
retval = 0;
|
|
goto out;
|
|
default:
|
|
twl_aen_queue_event(tw_dev, header);
|
|
|
|
/* If there are more aen's, keep reading the queue */
|
|
if (twl_aen_read_queue(tw_dev, request_id))
|
|
goto out2;
|
|
else {
|
|
retval = 0;
|
|
goto out;
|
|
}
|
|
}
|
|
retval = 0;
|
|
out2:
|
|
tw_dev->state[request_id] = TW_S_COMPLETED;
|
|
twl_free_request_id(tw_dev, request_id);
|
|
clear_bit(TW_IN_ATTENTION_LOOP, &tw_dev->flags);
|
|
out:
|
|
return retval;
|
|
} /* End twl_aen_complete() */
|
|
|
|
/* This function will poll for a response */
|
|
static int twl_poll_response(TW_Device_Extension *tw_dev, int request_id, int seconds)
|
|
{
|
|
unsigned long before;
|
|
dma_addr_t mfa;
|
|
u32 regh, regl;
|
|
u32 response;
|
|
int retval = 1;
|
|
int found = 0;
|
|
|
|
before = jiffies;
|
|
|
|
while (!found) {
|
|
if (sizeof(dma_addr_t) > 4) {
|
|
regh = readl(TWL_HOBQPH_REG_ADDR(tw_dev));
|
|
regl = readl(TWL_HOBQPL_REG_ADDR(tw_dev));
|
|
mfa = ((u64)regh << 32) | regl;
|
|
} else
|
|
mfa = readl(TWL_HOBQPL_REG_ADDR(tw_dev));
|
|
|
|
response = (u32)mfa;
|
|
|
|
if (TW_RESID_OUT(response) == request_id)
|
|
found = 1;
|
|
|
|
if (time_after(jiffies, before + HZ * seconds))
|
|
goto out;
|
|
|
|
msleep(50);
|
|
}
|
|
retval = 0;
|
|
out:
|
|
return retval;
|
|
} /* End twl_poll_response() */
|
|
|
|
/* This function will drain the aen queue */
|
|
static int twl_aen_drain_queue(TW_Device_Extension *tw_dev, int no_check_reset)
|
|
{
|
|
int request_id = 0;
|
|
unsigned char cdb[TW_MAX_CDB_LEN];
|
|
TW_SG_Entry_ISO sglist[1];
|
|
int finished = 0, count = 0;
|
|
TW_Command_Full *full_command_packet;
|
|
TW_Command_Apache_Header *header;
|
|
unsigned short aen;
|
|
int first_reset = 0, queue = 0, retval = 1;
|
|
|
|
if (no_check_reset)
|
|
first_reset = 0;
|
|
else
|
|
first_reset = 1;
|
|
|
|
full_command_packet = tw_dev->command_packet_virt[request_id];
|
|
memset(full_command_packet, 0, sizeof(TW_Command_Full));
|
|
|
|
/* Initialize cdb */
|
|
memset(&cdb, 0, TW_MAX_CDB_LEN);
|
|
cdb[0] = REQUEST_SENSE; /* opcode */
|
|
cdb[4] = TW_ALLOCATION_LENGTH; /* allocation length */
|
|
|
|
/* Initialize sglist */
|
|
memset(&sglist, 0, sizeof(TW_SG_Entry_ISO));
|
|
sglist[0].length = TW_SECTOR_SIZE;
|
|
sglist[0].address = tw_dev->generic_buffer_phys[request_id];
|
|
|
|
/* Mark internal command */
|
|
tw_dev->srb[request_id] = NULL;
|
|
|
|
do {
|
|
/* Send command to the board */
|
|
if (twl_scsiop_execute_scsi(tw_dev, request_id, cdb, 1, sglist)) {
|
|
TW_PRINTK(tw_dev->host, TW_DRIVER, 0x3, "Error posting request sense");
|
|
goto out;
|
|
}
|
|
|
|
/* Now poll for completion */
|
|
if (twl_poll_response(tw_dev, request_id, 30)) {
|
|
TW_PRINTK(tw_dev->host, TW_DRIVER, 0x4, "No valid response while draining AEN queue");
|
|
tw_dev->posted_request_count--;
|
|
goto out;
|
|
}
|
|
|
|
tw_dev->posted_request_count--;
|
|
header = (TW_Command_Apache_Header *)tw_dev->generic_buffer_virt[request_id];
|
|
aen = le16_to_cpu(header->status_block.error);
|
|
queue = 0;
|
|
count++;
|
|
|
|
switch (aen) {
|
|
case TW_AEN_QUEUE_EMPTY:
|
|
if (first_reset != 1)
|
|
goto out;
|
|
else
|
|
finished = 1;
|
|
break;
|
|
case TW_AEN_SOFT_RESET:
|
|
if (first_reset == 0)
|
|
first_reset = 1;
|
|
else
|
|
queue = 1;
|
|
break;
|
|
case TW_AEN_SYNC_TIME_WITH_HOST:
|
|
break;
|
|
default:
|
|
queue = 1;
|
|
}
|
|
|
|
/* Now queue an event info */
|
|
if (queue)
|
|
twl_aen_queue_event(tw_dev, header);
|
|
} while ((finished == 0) && (count < TW_MAX_AEN_DRAIN));
|
|
|
|
if (count == TW_MAX_AEN_DRAIN)
|
|
goto out;
|
|
|
|
retval = 0;
|
|
out:
|
|
tw_dev->state[request_id] = TW_S_INITIAL;
|
|
return retval;
|
|
} /* End twl_aen_drain_queue() */
|
|
|
|
/* This function will allocate memory and check if it is correctly aligned */
|
|
static int twl_allocate_memory(TW_Device_Extension *tw_dev, int size, int which)
|
|
{
|
|
int i;
|
|
dma_addr_t dma_handle;
|
|
unsigned long *cpu_addr;
|
|
int retval = 1;
|
|
|
|
cpu_addr = dma_alloc_coherent(&tw_dev->tw_pci_dev->dev,
|
|
size * TW_Q_LENGTH, &dma_handle,
|
|
GFP_KERNEL);
|
|
if (!cpu_addr) {
|
|
TW_PRINTK(tw_dev->host, TW_DRIVER, 0x5, "Memory allocation failed");
|
|
goto out;
|
|
}
|
|
|
|
for (i = 0; i < TW_Q_LENGTH; i++) {
|
|
switch(which) {
|
|
case 0:
|
|
tw_dev->command_packet_phys[i] = dma_handle+(i*size);
|
|
tw_dev->command_packet_virt[i] = (TW_Command_Full *)((unsigned char *)cpu_addr + (i*size));
|
|
break;
|
|
case 1:
|
|
tw_dev->generic_buffer_phys[i] = dma_handle+(i*size);
|
|
tw_dev->generic_buffer_virt[i] = (unsigned long *)((unsigned char *)cpu_addr + (i*size));
|
|
break;
|
|
case 2:
|
|
tw_dev->sense_buffer_phys[i] = dma_handle+(i*size);
|
|
tw_dev->sense_buffer_virt[i] = (TW_Command_Apache_Header *)((unsigned char *)cpu_addr + (i*size));
|
|
break;
|
|
}
|
|
}
|
|
retval = 0;
|
|
out:
|
|
return retval;
|
|
} /* End twl_allocate_memory() */
|
|
|
|
/* This function will load the request id and various sgls for ioctls */
|
|
static void twl_load_sgl(TW_Device_Extension *tw_dev, TW_Command_Full *full_command_packet, int request_id, dma_addr_t dma_handle, int length)
|
|
{
|
|
TW_Command *oldcommand;
|
|
TW_Command_Apache *newcommand;
|
|
TW_SG_Entry_ISO *sgl;
|
|
unsigned int pae = 0;
|
|
|
|
if ((sizeof(long) < 8) && (sizeof(dma_addr_t) > 4))
|
|
pae = 1;
|
|
|
|
if (TW_OP_OUT(full_command_packet->command.newcommand.opcode__reserved) == TW_OP_EXECUTE_SCSI) {
|
|
newcommand = &full_command_packet->command.newcommand;
|
|
newcommand->request_id__lunl =
|
|
cpu_to_le16(TW_REQ_LUN_IN(TW_LUN_OUT(newcommand->request_id__lunl), request_id));
|
|
if (length) {
|
|
newcommand->sg_list[0].address = TW_CPU_TO_SGL(dma_handle + sizeof(TW_Ioctl_Buf_Apache) - 1);
|
|
newcommand->sg_list[0].length = TW_CPU_TO_SGL(length);
|
|
}
|
|
newcommand->sgl_entries__lunh =
|
|
cpu_to_le16(TW_REQ_LUN_IN(TW_LUN_OUT(newcommand->sgl_entries__lunh), length ? 1 : 0));
|
|
} else {
|
|
oldcommand = &full_command_packet->command.oldcommand;
|
|
oldcommand->request_id = request_id;
|
|
|
|
if (TW_SGL_OUT(oldcommand->opcode__sgloffset)) {
|
|
/* Load the sg list */
|
|
sgl = (TW_SG_Entry_ISO *)((u32 *)oldcommand+oldcommand->size - (sizeof(TW_SG_Entry_ISO)/4) + pae + (sizeof(dma_addr_t) > 4 ? 1 : 0));
|
|
sgl->address = TW_CPU_TO_SGL(dma_handle + sizeof(TW_Ioctl_Buf_Apache) - 1);
|
|
sgl->length = TW_CPU_TO_SGL(length);
|
|
oldcommand->size += pae;
|
|
oldcommand->size += sizeof(dma_addr_t) > 4 ? 1 : 0;
|
|
}
|
|
}
|
|
} /* End twl_load_sgl() */
|
|
|
|
/* This function handles ioctl for the character device
|
|
This interface is used by smartmontools open source software */
|
|
static long twl_chrdev_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
|
|
{
|
|
long timeout;
|
|
unsigned long *cpu_addr, data_buffer_length_adjusted = 0, flags = 0;
|
|
dma_addr_t dma_handle;
|
|
int request_id = 0;
|
|
TW_Ioctl_Driver_Command driver_command;
|
|
struct inode *inode = file_inode(file);
|
|
TW_Ioctl_Buf_Apache *tw_ioctl;
|
|
TW_Command_Full *full_command_packet;
|
|
TW_Device_Extension *tw_dev = twl_device_extension_list[iminor(inode)];
|
|
int retval = -EFAULT;
|
|
void __user *argp = (void __user *)arg;
|
|
|
|
mutex_lock(&twl_chrdev_mutex);
|
|
|
|
/* Only let one of these through at a time */
|
|
if (mutex_lock_interruptible(&tw_dev->ioctl_lock)) {
|
|
retval = -EINTR;
|
|
goto out;
|
|
}
|
|
|
|
/* First copy down the driver command */
|
|
if (copy_from_user(&driver_command, argp, sizeof(TW_Ioctl_Driver_Command)))
|
|
goto out2;
|
|
|
|
/* Check data buffer size */
|
|
if (driver_command.buffer_length > TW_MAX_SECTORS * 2048) {
|
|
retval = -EINVAL;
|
|
goto out2;
|
|
}
|
|
|
|
/* Hardware can only do multiple of 512 byte transfers */
|
|
data_buffer_length_adjusted = (driver_command.buffer_length + 511) & ~511;
|
|
|
|
/* Now allocate ioctl buf memory */
|
|
cpu_addr = dma_alloc_coherent(&tw_dev->tw_pci_dev->dev, data_buffer_length_adjusted+sizeof(TW_Ioctl_Buf_Apache) - 1, &dma_handle, GFP_KERNEL);
|
|
if (!cpu_addr) {
|
|
retval = -ENOMEM;
|
|
goto out2;
|
|
}
|
|
|
|
tw_ioctl = (TW_Ioctl_Buf_Apache *)cpu_addr;
|
|
|
|
/* Now copy down the entire ioctl */
|
|
if (copy_from_user(tw_ioctl, argp, driver_command.buffer_length + sizeof(TW_Ioctl_Buf_Apache) - 1))
|
|
goto out3;
|
|
|
|
/* See which ioctl we are doing */
|
|
switch (cmd) {
|
|
case TW_IOCTL_FIRMWARE_PASS_THROUGH:
|
|
spin_lock_irqsave(tw_dev->host->host_lock, flags);
|
|
twl_get_request_id(tw_dev, &request_id);
|
|
|
|
/* Flag internal command */
|
|
tw_dev->srb[request_id] = NULL;
|
|
|
|
/* Flag chrdev ioctl */
|
|
tw_dev->chrdev_request_id = request_id;
|
|
|
|
full_command_packet = (TW_Command_Full *)&tw_ioctl->firmware_command;
|
|
|
|
/* Load request id and sglist for both command types */
|
|
twl_load_sgl(tw_dev, full_command_packet, request_id, dma_handle, data_buffer_length_adjusted);
|
|
|
|
memcpy(tw_dev->command_packet_virt[request_id], &(tw_ioctl->firmware_command), sizeof(TW_Command_Full));
|
|
|
|
/* Now post the command packet to the controller */
|
|
twl_post_command_packet(tw_dev, request_id);
|
|
spin_unlock_irqrestore(tw_dev->host->host_lock, flags);
|
|
|
|
timeout = TW_IOCTL_CHRDEV_TIMEOUT*HZ;
|
|
|
|
/* Now wait for command to complete */
|
|
timeout = wait_event_timeout(tw_dev->ioctl_wqueue, tw_dev->chrdev_request_id == TW_IOCTL_CHRDEV_FREE, timeout);
|
|
|
|
/* We timed out, and didn't get an interrupt */
|
|
if (tw_dev->chrdev_request_id != TW_IOCTL_CHRDEV_FREE) {
|
|
/* Now we need to reset the board */
|
|
printk(KERN_WARNING "3w-sas: scsi%d: WARNING: (0x%02X:0x%04X): Character ioctl (0x%x) timed out, resetting card.\n",
|
|
tw_dev->host->host_no, TW_DRIVER, 0x6,
|
|
cmd);
|
|
retval = -EIO;
|
|
twl_reset_device_extension(tw_dev, 1);
|
|
goto out3;
|
|
}
|
|
|
|
/* Now copy in the command packet response */
|
|
memcpy(&(tw_ioctl->firmware_command), tw_dev->command_packet_virt[request_id], sizeof(TW_Command_Full));
|
|
|
|
/* Now complete the io */
|
|
spin_lock_irqsave(tw_dev->host->host_lock, flags);
|
|
tw_dev->posted_request_count--;
|
|
tw_dev->state[request_id] = TW_S_COMPLETED;
|
|
twl_free_request_id(tw_dev, request_id);
|
|
spin_unlock_irqrestore(tw_dev->host->host_lock, flags);
|
|
break;
|
|
default:
|
|
retval = -ENOTTY;
|
|
goto out3;
|
|
}
|
|
|
|
/* Now copy the entire response to userspace */
|
|
if (copy_to_user(argp, tw_ioctl, sizeof(TW_Ioctl_Buf_Apache) + driver_command.buffer_length - 1) == 0)
|
|
retval = 0;
|
|
out3:
|
|
/* Now free ioctl buf memory */
|
|
dma_free_coherent(&tw_dev->tw_pci_dev->dev, data_buffer_length_adjusted+sizeof(TW_Ioctl_Buf_Apache) - 1, cpu_addr, dma_handle);
|
|
out2:
|
|
mutex_unlock(&tw_dev->ioctl_lock);
|
|
out:
|
|
mutex_unlock(&twl_chrdev_mutex);
|
|
return retval;
|
|
} /* End twl_chrdev_ioctl() */
|
|
|
|
/* This function handles open for the character device */
|
|
static int twl_chrdev_open(struct inode *inode, struct file *file)
|
|
{
|
|
unsigned int minor_number;
|
|
int retval = -ENODEV;
|
|
|
|
if (!capable(CAP_SYS_ADMIN)) {
|
|
retval = -EACCES;
|
|
goto out;
|
|
}
|
|
|
|
minor_number = iminor(inode);
|
|
if (minor_number >= twl_device_extension_count)
|
|
goto out;
|
|
retval = 0;
|
|
out:
|
|
return retval;
|
|
} /* End twl_chrdev_open() */
|
|
|
|
/* File operations struct for character device */
|
|
static const struct file_operations twl_fops = {
|
|
.owner = THIS_MODULE,
|
|
.unlocked_ioctl = twl_chrdev_ioctl,
|
|
.open = twl_chrdev_open,
|
|
.release = NULL,
|
|
.llseek = noop_llseek,
|
|
};
|
|
|
|
/* This function passes sense data from firmware to scsi layer */
|
|
static int twl_fill_sense(TW_Device_Extension *tw_dev, int i, int request_id, int copy_sense, int print_host)
|
|
{
|
|
TW_Command_Apache_Header *header;
|
|
TW_Command_Full *full_command_packet;
|
|
unsigned short error;
|
|
char *error_str;
|
|
|
|
header = tw_dev->sense_buffer_virt[i];
|
|
full_command_packet = tw_dev->command_packet_virt[request_id];
|
|
|
|
/* Get embedded firmware error string */
|
|
error_str = &(header->err_specific_desc[strlen(header->err_specific_desc) + 1]);
|
|
|
|
/* Don't print error for Logical unit not supported during rollcall */
|
|
error = le16_to_cpu(header->status_block.error);
|
|
if ((error != TW_ERROR_LOGICAL_UNIT_NOT_SUPPORTED) && (error != TW_ERROR_UNIT_OFFLINE) && (error != TW_ERROR_INVALID_FIELD_IN_CDB)) {
|
|
if (print_host)
|
|
printk(KERN_WARNING "3w-sas: scsi%d: ERROR: (0x%02X:0x%04X): %s:%s.\n",
|
|
tw_dev->host->host_no,
|
|
TW_MESSAGE_SOURCE_CONTROLLER_ERROR,
|
|
header->status_block.error,
|
|
error_str,
|
|
header->err_specific_desc);
|
|
else
|
|
printk(KERN_WARNING "3w-sas: ERROR: (0x%02X:0x%04X): %s:%s.\n",
|
|
TW_MESSAGE_SOURCE_CONTROLLER_ERROR,
|
|
header->status_block.error,
|
|
error_str,
|
|
header->err_specific_desc);
|
|
}
|
|
|
|
if (copy_sense) {
|
|
memcpy(tw_dev->srb[request_id]->sense_buffer, header->sense_data, TW_SENSE_DATA_LENGTH);
|
|
tw_dev->srb[request_id]->result = (full_command_packet->command.newcommand.status << 1);
|
|
goto out;
|
|
}
|
|
out:
|
|
return 1;
|
|
} /* End twl_fill_sense() */
|
|
|
|
/* This function will free up device extension resources */
|
|
static void twl_free_device_extension(TW_Device_Extension *tw_dev)
|
|
{
|
|
if (tw_dev->command_packet_virt[0])
|
|
dma_free_coherent(&tw_dev->tw_pci_dev->dev,
|
|
sizeof(TW_Command_Full)*TW_Q_LENGTH,
|
|
tw_dev->command_packet_virt[0],
|
|
tw_dev->command_packet_phys[0]);
|
|
|
|
if (tw_dev->generic_buffer_virt[0])
|
|
dma_free_coherent(&tw_dev->tw_pci_dev->dev,
|
|
TW_SECTOR_SIZE*TW_Q_LENGTH,
|
|
tw_dev->generic_buffer_virt[0],
|
|
tw_dev->generic_buffer_phys[0]);
|
|
|
|
if (tw_dev->sense_buffer_virt[0])
|
|
dma_free_coherent(&tw_dev->tw_pci_dev->dev,
|
|
sizeof(TW_Command_Apache_Header)*
|
|
TW_Q_LENGTH,
|
|
tw_dev->sense_buffer_virt[0],
|
|
tw_dev->sense_buffer_phys[0]);
|
|
|
|
kfree(tw_dev->event_queue[0]);
|
|
} /* End twl_free_device_extension() */
|
|
|
|
/* This function will get parameter table entries from the firmware */
|
|
static void *twl_get_param(TW_Device_Extension *tw_dev, int request_id, int table_id, int parameter_id, int parameter_size_bytes)
|
|
{
|
|
TW_Command_Full *full_command_packet;
|
|
TW_Command *command_packet;
|
|
TW_Param_Apache *param;
|
|
void *retval = NULL;
|
|
|
|
/* Setup the command packet */
|
|
full_command_packet = tw_dev->command_packet_virt[request_id];
|
|
memset(full_command_packet, 0, sizeof(TW_Command_Full));
|
|
command_packet = &full_command_packet->command.oldcommand;
|
|
|
|
command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM);
|
|
command_packet->size = TW_COMMAND_SIZE;
|
|
command_packet->request_id = request_id;
|
|
command_packet->byte6_offset.block_count = cpu_to_le16(1);
|
|
|
|
/* Now setup the param */
|
|
param = (TW_Param_Apache *)tw_dev->generic_buffer_virt[request_id];
|
|
memset(param, 0, TW_SECTOR_SIZE);
|
|
param->table_id = cpu_to_le16(table_id | 0x8000);
|
|
param->parameter_id = cpu_to_le16(parameter_id);
|
|
param->parameter_size_bytes = cpu_to_le16(parameter_size_bytes);
|
|
|
|
command_packet->byte8_offset.param.sgl[0].address = TW_CPU_TO_SGL(tw_dev->generic_buffer_phys[request_id]);
|
|
command_packet->byte8_offset.param.sgl[0].length = TW_CPU_TO_SGL(TW_SECTOR_SIZE);
|
|
|
|
/* Post the command packet to the board */
|
|
twl_post_command_packet(tw_dev, request_id);
|
|
|
|
/* Poll for completion */
|
|
if (twl_poll_response(tw_dev, request_id, 30))
|
|
TW_PRINTK(tw_dev->host, TW_DRIVER, 0x7, "No valid response during get param")
|
|
else
|
|
retval = (void *)&(param->data[0]);
|
|
|
|
tw_dev->posted_request_count--;
|
|
tw_dev->state[request_id] = TW_S_INITIAL;
|
|
|
|
return retval;
|
|
} /* End twl_get_param() */
|
|
|
|
/* This function will send an initconnection command to controller */
|
|
static int twl_initconnection(TW_Device_Extension *tw_dev, int message_credits,
|
|
u32 set_features, unsigned short current_fw_srl,
|
|
unsigned short current_fw_arch_id,
|
|
unsigned short current_fw_branch,
|
|
unsigned short current_fw_build,
|
|
unsigned short *fw_on_ctlr_srl,
|
|
unsigned short *fw_on_ctlr_arch_id,
|
|
unsigned short *fw_on_ctlr_branch,
|
|
unsigned short *fw_on_ctlr_build,
|
|
u32 *init_connect_result)
|
|
{
|
|
TW_Command_Full *full_command_packet;
|
|
TW_Initconnect *tw_initconnect;
|
|
int request_id = 0, retval = 1;
|
|
|
|
/* Initialize InitConnection command packet */
|
|
full_command_packet = tw_dev->command_packet_virt[request_id];
|
|
memset(full_command_packet, 0, sizeof(TW_Command_Full));
|
|
full_command_packet->header.header_desc.size_header = 128;
|
|
|
|
tw_initconnect = (TW_Initconnect *)&full_command_packet->command.oldcommand;
|
|
tw_initconnect->opcode__reserved = TW_OPRES_IN(0, TW_OP_INIT_CONNECTION);
|
|
tw_initconnect->request_id = request_id;
|
|
tw_initconnect->message_credits = cpu_to_le16(message_credits);
|
|
tw_initconnect->features = set_features;
|
|
|
|
/* Turn on 64-bit sgl support if we need to */
|
|
tw_initconnect->features |= sizeof(dma_addr_t) > 4 ? 1 : 0;
|
|
|
|
tw_initconnect->features = cpu_to_le32(tw_initconnect->features);
|
|
|
|
if (set_features & TW_EXTENDED_INIT_CONNECT) {
|
|
tw_initconnect->size = TW_INIT_COMMAND_PACKET_SIZE_EXTENDED;
|
|
tw_initconnect->fw_srl = cpu_to_le16(current_fw_srl);
|
|
tw_initconnect->fw_arch_id = cpu_to_le16(current_fw_arch_id);
|
|
tw_initconnect->fw_branch = cpu_to_le16(current_fw_branch);
|
|
tw_initconnect->fw_build = cpu_to_le16(current_fw_build);
|
|
} else
|
|
tw_initconnect->size = TW_INIT_COMMAND_PACKET_SIZE;
|
|
|
|
/* Send command packet to the board */
|
|
twl_post_command_packet(tw_dev, request_id);
|
|
|
|
/* Poll for completion */
|
|
if (twl_poll_response(tw_dev, request_id, 30)) {
|
|
TW_PRINTK(tw_dev->host, TW_DRIVER, 0x8, "No valid response during init connection");
|
|
} else {
|
|
if (set_features & TW_EXTENDED_INIT_CONNECT) {
|
|
*fw_on_ctlr_srl = le16_to_cpu(tw_initconnect->fw_srl);
|
|
*fw_on_ctlr_arch_id = le16_to_cpu(tw_initconnect->fw_arch_id);
|
|
*fw_on_ctlr_branch = le16_to_cpu(tw_initconnect->fw_branch);
|
|
*fw_on_ctlr_build = le16_to_cpu(tw_initconnect->fw_build);
|
|
*init_connect_result = le32_to_cpu(tw_initconnect->result);
|
|
}
|
|
retval = 0;
|
|
}
|
|
|
|
tw_dev->posted_request_count--;
|
|
tw_dev->state[request_id] = TW_S_INITIAL;
|
|
|
|
return retval;
|
|
} /* End twl_initconnection() */
|
|
|
|
/* This function will initialize the fields of a device extension */
|
|
static int twl_initialize_device_extension(TW_Device_Extension *tw_dev)
|
|
{
|
|
int i, retval = 1;
|
|
|
|
/* Initialize command packet buffers */
|
|
if (twl_allocate_memory(tw_dev, sizeof(TW_Command_Full), 0)) {
|
|
TW_PRINTK(tw_dev->host, TW_DRIVER, 0x9, "Command packet memory allocation failed");
|
|
goto out;
|
|
}
|
|
|
|
/* Initialize generic buffer */
|
|
if (twl_allocate_memory(tw_dev, TW_SECTOR_SIZE, 1)) {
|
|
TW_PRINTK(tw_dev->host, TW_DRIVER, 0xa, "Generic memory allocation failed");
|
|
goto out;
|
|
}
|
|
|
|
/* Allocate sense buffers */
|
|
if (twl_allocate_memory(tw_dev, sizeof(TW_Command_Apache_Header), 2)) {
|
|
TW_PRINTK(tw_dev->host, TW_DRIVER, 0xb, "Sense buffer allocation failed");
|
|
goto out;
|
|
}
|
|
|
|
/* Allocate event info space */
|
|
tw_dev->event_queue[0] = kcalloc(TW_Q_LENGTH, sizeof(TW_Event), GFP_KERNEL);
|
|
if (!tw_dev->event_queue[0]) {
|
|
TW_PRINTK(tw_dev->host, TW_DRIVER, 0xc, "Event info memory allocation failed");
|
|
goto out;
|
|
}
|
|
|
|
for (i = 0; i < TW_Q_LENGTH; i++) {
|
|
tw_dev->event_queue[i] = (TW_Event *)((unsigned char *)tw_dev->event_queue[0] + (i * sizeof(TW_Event)));
|
|
tw_dev->free_queue[i] = i;
|
|
tw_dev->state[i] = TW_S_INITIAL;
|
|
}
|
|
|
|
tw_dev->free_head = TW_Q_START;
|
|
tw_dev->free_tail = TW_Q_START;
|
|
tw_dev->error_sequence_id = 1;
|
|
tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE;
|
|
|
|
mutex_init(&tw_dev->ioctl_lock);
|
|
init_waitqueue_head(&tw_dev->ioctl_wqueue);
|
|
|
|
retval = 0;
|
|
out:
|
|
return retval;
|
|
} /* End twl_initialize_device_extension() */
|
|
|
|
/* This function will handle attention interrupts */
|
|
static int twl_handle_attention_interrupt(TW_Device_Extension *tw_dev)
|
|
{
|
|
int retval = 1;
|
|
u32 request_id, doorbell;
|
|
|
|
/* Read doorbell status */
|
|
doorbell = readl(TWL_HOBDB_REG_ADDR(tw_dev));
|
|
|
|
/* Check for controller errors */
|
|
if (doorbell & TWL_DOORBELL_CONTROLLER_ERROR) {
|
|
TW_PRINTK(tw_dev->host, TW_DRIVER, 0xd, "Microcontroller Error: clearing");
|
|
goto out;
|
|
}
|
|
|
|
/* Check if we need to perform an AEN drain */
|
|
if (doorbell & TWL_DOORBELL_ATTENTION_INTERRUPT) {
|
|
if (!(test_and_set_bit(TW_IN_ATTENTION_LOOP, &tw_dev->flags))) {
|
|
twl_get_request_id(tw_dev, &request_id);
|
|
if (twl_aen_read_queue(tw_dev, request_id)) {
|
|
tw_dev->state[request_id] = TW_S_COMPLETED;
|
|
twl_free_request_id(tw_dev, request_id);
|
|
clear_bit(TW_IN_ATTENTION_LOOP, &tw_dev->flags);
|
|
}
|
|
}
|
|
}
|
|
|
|
retval = 0;
|
|
out:
|
|
/* Clear doorbell interrupt */
|
|
TWL_CLEAR_DB_INTERRUPT(tw_dev);
|
|
|
|
/* Make sure the clear was flushed by reading it back */
|
|
readl(TWL_HOBDBC_REG_ADDR(tw_dev));
|
|
|
|
return retval;
|
|
} /* End twl_handle_attention_interrupt() */
|
|
|
|
/* Interrupt service routine */
|
|
static irqreturn_t twl_interrupt(int irq, void *dev_instance)
|
|
{
|
|
TW_Device_Extension *tw_dev = (TW_Device_Extension *)dev_instance;
|
|
int i, handled = 0, error = 0;
|
|
dma_addr_t mfa = 0;
|
|
u32 reg, regl, regh, response, request_id = 0;
|
|
struct scsi_cmnd *cmd;
|
|
TW_Command_Full *full_command_packet;
|
|
|
|
spin_lock(tw_dev->host->host_lock);
|
|
|
|
/* Read host interrupt status */
|
|
reg = readl(TWL_HISTAT_REG_ADDR(tw_dev));
|
|
|
|
/* Check if this is our interrupt, otherwise bail */
|
|
if (!(reg & TWL_HISTATUS_VALID_INTERRUPT))
|
|
goto twl_interrupt_bail;
|
|
|
|
handled = 1;
|
|
|
|
/* If we are resetting, bail */
|
|
if (test_bit(TW_IN_RESET, &tw_dev->flags))
|
|
goto twl_interrupt_bail;
|
|
|
|
/* Attention interrupt */
|
|
if (reg & TWL_HISTATUS_ATTENTION_INTERRUPT) {
|
|
if (twl_handle_attention_interrupt(tw_dev)) {
|
|
TWL_MASK_INTERRUPTS(tw_dev);
|
|
goto twl_interrupt_bail;
|
|
}
|
|
}
|
|
|
|
/* Response interrupt */
|
|
while (reg & TWL_HISTATUS_RESPONSE_INTERRUPT) {
|
|
if (sizeof(dma_addr_t) > 4) {
|
|
regh = readl(TWL_HOBQPH_REG_ADDR(tw_dev));
|
|
regl = readl(TWL_HOBQPL_REG_ADDR(tw_dev));
|
|
mfa = ((u64)regh << 32) | regl;
|
|
} else
|
|
mfa = readl(TWL_HOBQPL_REG_ADDR(tw_dev));
|
|
|
|
error = 0;
|
|
response = (u32)mfa;
|
|
|
|
/* Check for command packet error */
|
|
if (!TW_NOTMFA_OUT(response)) {
|
|
for (i=0;i<TW_Q_LENGTH;i++) {
|
|
if (tw_dev->sense_buffer_phys[i] == mfa) {
|
|
request_id = le16_to_cpu(tw_dev->sense_buffer_virt[i]->header_desc.request_id);
|
|
if (tw_dev->srb[request_id] != NULL)
|
|
error = twl_fill_sense(tw_dev, i, request_id, 1, 1);
|
|
else {
|
|
/* Skip ioctl error prints */
|
|
if (request_id != tw_dev->chrdev_request_id)
|
|
error = twl_fill_sense(tw_dev, i, request_id, 0, 1);
|
|
else
|
|
memcpy(tw_dev->command_packet_virt[request_id], tw_dev->sense_buffer_virt[i], sizeof(TW_Command_Apache_Header));
|
|
}
|
|
|
|
/* Now re-post the sense buffer */
|
|
writel((u32)((u64)tw_dev->sense_buffer_phys[i] >> 32), TWL_HOBQPH_REG_ADDR(tw_dev));
|
|
writel((u32)tw_dev->sense_buffer_phys[i], TWL_HOBQPL_REG_ADDR(tw_dev));
|
|
break;
|
|
}
|
|
}
|
|
} else
|
|
request_id = TW_RESID_OUT(response);
|
|
|
|
full_command_packet = tw_dev->command_packet_virt[request_id];
|
|
|
|
/* Check for correct state */
|
|
if (tw_dev->state[request_id] != TW_S_POSTED) {
|
|
if (tw_dev->srb[request_id] != NULL) {
|
|
TW_PRINTK(tw_dev->host, TW_DRIVER, 0xe, "Received a request id that wasn't posted");
|
|
TWL_MASK_INTERRUPTS(tw_dev);
|
|
goto twl_interrupt_bail;
|
|
}
|
|
}
|
|
|
|
/* Check for internal command completion */
|
|
if (tw_dev->srb[request_id] == NULL) {
|
|
if (request_id != tw_dev->chrdev_request_id) {
|
|
if (twl_aen_complete(tw_dev, request_id))
|
|
TW_PRINTK(tw_dev->host, TW_DRIVER, 0xf, "Error completing AEN during attention interrupt");
|
|
} else {
|
|
tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE;
|
|
wake_up(&tw_dev->ioctl_wqueue);
|
|
}
|
|
} else {
|
|
cmd = tw_dev->srb[request_id];
|
|
|
|
if (!error)
|
|
cmd->result = (DID_OK << 16);
|
|
|
|
/* Report residual bytes for single sgl */
|
|
if ((scsi_sg_count(cmd) <= 1) && (full_command_packet->command.newcommand.status == 0)) {
|
|
if (full_command_packet->command.newcommand.sg_list[0].length < scsi_bufflen(tw_dev->srb[request_id]))
|
|
scsi_set_resid(cmd, scsi_bufflen(cmd) - full_command_packet->command.newcommand.sg_list[0].length);
|
|
}
|
|
|
|
/* Now complete the io */
|
|
scsi_dma_unmap(cmd);
|
|
cmd->scsi_done(cmd);
|
|
tw_dev->state[request_id] = TW_S_COMPLETED;
|
|
twl_free_request_id(tw_dev, request_id);
|
|
tw_dev->posted_request_count--;
|
|
}
|
|
|
|
/* Check for another response interrupt */
|
|
reg = readl(TWL_HISTAT_REG_ADDR(tw_dev));
|
|
}
|
|
|
|
twl_interrupt_bail:
|
|
spin_unlock(tw_dev->host->host_lock);
|
|
return IRQ_RETVAL(handled);
|
|
} /* End twl_interrupt() */
|
|
|
|
/* This function will poll for a register change */
|
|
static int twl_poll_register(TW_Device_Extension *tw_dev, void *reg, u32 value, u32 result, int seconds)
|
|
{
|
|
unsigned long before;
|
|
int retval = 1;
|
|
u32 reg_value;
|
|
|
|
reg_value = readl(reg);
|
|
before = jiffies;
|
|
|
|
while ((reg_value & value) != result) {
|
|
reg_value = readl(reg);
|
|
if (time_after(jiffies, before + HZ * seconds))
|
|
goto out;
|
|
msleep(50);
|
|
}
|
|
retval = 0;
|
|
out:
|
|
return retval;
|
|
} /* End twl_poll_register() */
|
|
|
|
/* This function will reset a controller */
|
|
static int twl_reset_sequence(TW_Device_Extension *tw_dev, int soft_reset)
|
|
{
|
|
int retval = 1;
|
|
int i = 0;
|
|
u32 status = 0;
|
|
unsigned short fw_on_ctlr_srl = 0, fw_on_ctlr_arch_id = 0;
|
|
unsigned short fw_on_ctlr_branch = 0, fw_on_ctlr_build = 0;
|
|
u32 init_connect_result = 0;
|
|
int tries = 0;
|
|
int do_soft_reset = soft_reset;
|
|
|
|
while (tries < TW_MAX_RESET_TRIES) {
|
|
/* Do a soft reset if one is needed */
|
|
if (do_soft_reset) {
|
|
TWL_SOFT_RESET(tw_dev);
|
|
|
|
/* Make sure controller is in a good state */
|
|
if (twl_poll_register(tw_dev, TWL_SCRPD3_REG_ADDR(tw_dev), TWL_CONTROLLER_READY, 0x0, 30)) {
|
|
TW_PRINTK(tw_dev->host, TW_DRIVER, 0x10, "Controller never went non-ready during reset sequence");
|
|
tries++;
|
|
continue;
|
|
}
|
|
if (twl_poll_register(tw_dev, TWL_SCRPD3_REG_ADDR(tw_dev), TWL_CONTROLLER_READY, TWL_CONTROLLER_READY, 60)) {
|
|
TW_PRINTK(tw_dev->host, TW_DRIVER, 0x11, "Controller not ready during reset sequence");
|
|
tries++;
|
|
continue;
|
|
}
|
|
}
|
|
|
|
/* Initconnect */
|
|
if (twl_initconnection(tw_dev, TW_INIT_MESSAGE_CREDITS,
|
|
TW_EXTENDED_INIT_CONNECT, TW_CURRENT_DRIVER_SRL,
|
|
TW_9750_ARCH_ID, TW_CURRENT_DRIVER_BRANCH,
|
|
TW_CURRENT_DRIVER_BUILD, &fw_on_ctlr_srl,
|
|
&fw_on_ctlr_arch_id, &fw_on_ctlr_branch,
|
|
&fw_on_ctlr_build, &init_connect_result)) {
|
|
TW_PRINTK(tw_dev->host, TW_DRIVER, 0x12, "Initconnection failed while checking SRL");
|
|
do_soft_reset = 1;
|
|
tries++;
|
|
continue;
|
|
}
|
|
|
|
/* Load sense buffers */
|
|
while (i < TW_Q_LENGTH) {
|
|
writel((u32)((u64)tw_dev->sense_buffer_phys[i] >> 32), TWL_HOBQPH_REG_ADDR(tw_dev));
|
|
writel((u32)tw_dev->sense_buffer_phys[i], TWL_HOBQPL_REG_ADDR(tw_dev));
|
|
|
|
/* Check status for over-run after each write */
|
|
status = readl(TWL_STATUS_REG_ADDR(tw_dev));
|
|
if (!(status & TWL_STATUS_OVERRUN_SUBMIT))
|
|
i++;
|
|
}
|
|
|
|
/* Now check status */
|
|
status = readl(TWL_STATUS_REG_ADDR(tw_dev));
|
|
if (status) {
|
|
TW_PRINTK(tw_dev->host, TW_DRIVER, 0x13, "Bad controller status after loading sense buffers");
|
|
do_soft_reset = 1;
|
|
tries++;
|
|
continue;
|
|
}
|
|
|
|
/* Drain the AEN queue */
|
|
if (twl_aen_drain_queue(tw_dev, soft_reset)) {
|
|
TW_PRINTK(tw_dev->host, TW_DRIVER, 0x14, "AEN drain failed during reset sequence");
|
|
do_soft_reset = 1;
|
|
tries++;
|
|
continue;
|
|
}
|
|
|
|
/* Load rest of compatibility struct */
|
|
strncpy(tw_dev->tw_compat_info.driver_version, TW_DRIVER_VERSION, strlen(TW_DRIVER_VERSION));
|
|
tw_dev->tw_compat_info.driver_srl_high = TW_CURRENT_DRIVER_SRL;
|
|
tw_dev->tw_compat_info.driver_branch_high = TW_CURRENT_DRIVER_BRANCH;
|
|
tw_dev->tw_compat_info.driver_build_high = TW_CURRENT_DRIVER_BUILD;
|
|
tw_dev->tw_compat_info.driver_srl_low = TW_BASE_FW_SRL;
|
|
tw_dev->tw_compat_info.driver_branch_low = TW_BASE_FW_BRANCH;
|
|
tw_dev->tw_compat_info.driver_build_low = TW_BASE_FW_BUILD;
|
|
tw_dev->tw_compat_info.fw_on_ctlr_srl = fw_on_ctlr_srl;
|
|
tw_dev->tw_compat_info.fw_on_ctlr_branch = fw_on_ctlr_branch;
|
|
tw_dev->tw_compat_info.fw_on_ctlr_build = fw_on_ctlr_build;
|
|
|
|
/* If we got here, controller is in a good state */
|
|
retval = 0;
|
|
goto out;
|
|
}
|
|
out:
|
|
return retval;
|
|
} /* End twl_reset_sequence() */
|
|
|
|
/* This function will reset a device extension */
|
|
static int twl_reset_device_extension(TW_Device_Extension *tw_dev, int ioctl_reset)
|
|
{
|
|
int i = 0, retval = 1;
|
|
unsigned long flags = 0;
|
|
|
|
/* Block SCSI requests while we are resetting */
|
|
if (ioctl_reset)
|
|
scsi_block_requests(tw_dev->host);
|
|
|
|
set_bit(TW_IN_RESET, &tw_dev->flags);
|
|
TWL_MASK_INTERRUPTS(tw_dev);
|
|
TWL_CLEAR_DB_INTERRUPT(tw_dev);
|
|
|
|
spin_lock_irqsave(tw_dev->host->host_lock, flags);
|
|
|
|
/* Abort all requests that are in progress */
|
|
for (i = 0; i < TW_Q_LENGTH; i++) {
|
|
if ((tw_dev->state[i] != TW_S_FINISHED) &&
|
|
(tw_dev->state[i] != TW_S_INITIAL) &&
|
|
(tw_dev->state[i] != TW_S_COMPLETED)) {
|
|
struct scsi_cmnd *cmd = tw_dev->srb[i];
|
|
|
|
if (cmd) {
|
|
cmd->result = (DID_RESET << 16);
|
|
scsi_dma_unmap(cmd);
|
|
cmd->scsi_done(cmd);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Reset queues and counts */
|
|
for (i = 0; i < TW_Q_LENGTH; i++) {
|
|
tw_dev->free_queue[i] = i;
|
|
tw_dev->state[i] = TW_S_INITIAL;
|
|
}
|
|
tw_dev->free_head = TW_Q_START;
|
|
tw_dev->free_tail = TW_Q_START;
|
|
tw_dev->posted_request_count = 0;
|
|
|
|
spin_unlock_irqrestore(tw_dev->host->host_lock, flags);
|
|
|
|
if (twl_reset_sequence(tw_dev, 1))
|
|
goto out;
|
|
|
|
TWL_UNMASK_INTERRUPTS(tw_dev);
|
|
|
|
clear_bit(TW_IN_RESET, &tw_dev->flags);
|
|
tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE;
|
|
|
|
retval = 0;
|
|
out:
|
|
if (ioctl_reset)
|
|
scsi_unblock_requests(tw_dev->host);
|
|
return retval;
|
|
} /* End twl_reset_device_extension() */
|
|
|
|
/* This funciton returns unit geometry in cylinders/heads/sectors */
|
|
static int twl_scsi_biosparam(struct scsi_device *sdev, struct block_device *bdev, sector_t capacity, int geom[])
|
|
{
|
|
int heads, sectors;
|
|
|
|
if (capacity >= 0x200000) {
|
|
heads = 255;
|
|
sectors = 63;
|
|
} else {
|
|
heads = 64;
|
|
sectors = 32;
|
|
}
|
|
|
|
geom[0] = heads;
|
|
geom[1] = sectors;
|
|
geom[2] = sector_div(capacity, heads * sectors); /* cylinders */
|
|
|
|
return 0;
|
|
} /* End twl_scsi_biosparam() */
|
|
|
|
/* This is the new scsi eh reset function */
|
|
static int twl_scsi_eh_reset(struct scsi_cmnd *SCpnt)
|
|
{
|
|
TW_Device_Extension *tw_dev = NULL;
|
|
int retval = FAILED;
|
|
|
|
tw_dev = (TW_Device_Extension *)SCpnt->device->host->hostdata;
|
|
|
|
tw_dev->num_resets++;
|
|
|
|
sdev_printk(KERN_WARNING, SCpnt->device,
|
|
"WARNING: (0x%02X:0x%04X): Command (0x%x) timed out, resetting card.\n",
|
|
TW_DRIVER, 0x2c, SCpnt->cmnd[0]);
|
|
|
|
/* Make sure we are not issuing an ioctl or resetting from ioctl */
|
|
mutex_lock(&tw_dev->ioctl_lock);
|
|
|
|
/* Now reset the card and some of the device extension data */
|
|
if (twl_reset_device_extension(tw_dev, 0)) {
|
|
TW_PRINTK(tw_dev->host, TW_DRIVER, 0x15, "Controller reset failed during scsi host reset");
|
|
goto out;
|
|
}
|
|
|
|
retval = SUCCESS;
|
|
out:
|
|
mutex_unlock(&tw_dev->ioctl_lock);
|
|
return retval;
|
|
} /* End twl_scsi_eh_reset() */
|
|
|
|
/* This is the main scsi queue function to handle scsi opcodes */
|
|
static int twl_scsi_queue_lck(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *))
|
|
{
|
|
int request_id, retval;
|
|
TW_Device_Extension *tw_dev = (TW_Device_Extension *)SCpnt->device->host->hostdata;
|
|
|
|
/* If we are resetting due to timed out ioctl, report as busy */
|
|
if (test_bit(TW_IN_RESET, &tw_dev->flags)) {
|
|
retval = SCSI_MLQUEUE_HOST_BUSY;
|
|
goto out;
|
|
}
|
|
|
|
/* Save done function into scsi_cmnd struct */
|
|
SCpnt->scsi_done = done;
|
|
|
|
/* Get a free request id */
|
|
twl_get_request_id(tw_dev, &request_id);
|
|
|
|
/* Save the scsi command for use by the ISR */
|
|
tw_dev->srb[request_id] = SCpnt;
|
|
|
|
retval = twl_scsiop_execute_scsi(tw_dev, request_id, NULL, 0, NULL);
|
|
if (retval) {
|
|
tw_dev->state[request_id] = TW_S_COMPLETED;
|
|
twl_free_request_id(tw_dev, request_id);
|
|
SCpnt->result = (DID_ERROR << 16);
|
|
done(SCpnt);
|
|
retval = 0;
|
|
}
|
|
out:
|
|
return retval;
|
|
} /* End twl_scsi_queue() */
|
|
|
|
static DEF_SCSI_QCMD(twl_scsi_queue)
|
|
|
|
/* This function tells the controller to shut down */
|
|
static void __twl_shutdown(TW_Device_Extension *tw_dev)
|
|
{
|
|
/* Disable interrupts */
|
|
TWL_MASK_INTERRUPTS(tw_dev);
|
|
|
|
/* Free up the IRQ */
|
|
free_irq(tw_dev->tw_pci_dev->irq, tw_dev);
|
|
|
|
printk(KERN_WARNING "3w-sas: Shutting down host %d.\n", tw_dev->host->host_no);
|
|
|
|
/* Tell the card we are shutting down */
|
|
if (twl_initconnection(tw_dev, 1, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL)) {
|
|
TW_PRINTK(tw_dev->host, TW_DRIVER, 0x16, "Connection shutdown failed");
|
|
} else {
|
|
printk(KERN_WARNING "3w-sas: Shutdown complete.\n");
|
|
}
|
|
|
|
/* Clear doorbell interrupt just before exit */
|
|
TWL_CLEAR_DB_INTERRUPT(tw_dev);
|
|
} /* End __twl_shutdown() */
|
|
|
|
/* Wrapper for __twl_shutdown */
|
|
static void twl_shutdown(struct pci_dev *pdev)
|
|
{
|
|
struct Scsi_Host *host = pci_get_drvdata(pdev);
|
|
TW_Device_Extension *tw_dev;
|
|
|
|
if (!host)
|
|
return;
|
|
|
|
tw_dev = (TW_Device_Extension *)host->hostdata;
|
|
|
|
if (tw_dev->online)
|
|
__twl_shutdown(tw_dev);
|
|
} /* End twl_shutdown() */
|
|
|
|
/* This function configures unit settings when a unit is coming on-line */
|
|
static int twl_slave_configure(struct scsi_device *sdev)
|
|
{
|
|
/* Force 60 second timeout */
|
|
blk_queue_rq_timeout(sdev->request_queue, 60 * HZ);
|
|
|
|
return 0;
|
|
} /* End twl_slave_configure() */
|
|
|
|
/* scsi_host_template initializer */
|
|
static struct scsi_host_template driver_template = {
|
|
.module = THIS_MODULE,
|
|
.name = "3w-sas",
|
|
.queuecommand = twl_scsi_queue,
|
|
.eh_host_reset_handler = twl_scsi_eh_reset,
|
|
.bios_param = twl_scsi_biosparam,
|
|
.change_queue_depth = scsi_change_queue_depth,
|
|
.can_queue = TW_Q_LENGTH-2,
|
|
.slave_configure = twl_slave_configure,
|
|
.this_id = -1,
|
|
.sg_tablesize = TW_LIBERATOR_MAX_SGL_LENGTH,
|
|
.max_sectors = TW_MAX_SECTORS,
|
|
.cmd_per_lun = TW_MAX_CMDS_PER_LUN,
|
|
.shost_attrs = twl_host_attrs,
|
|
.emulated = 1,
|
|
.no_write_same = 1,
|
|
};
|
|
|
|
/* This function will probe and initialize a card */
|
|
static int twl_probe(struct pci_dev *pdev, const struct pci_device_id *dev_id)
|
|
{
|
|
struct Scsi_Host *host = NULL;
|
|
TW_Device_Extension *tw_dev;
|
|
int retval = -ENODEV;
|
|
int *ptr_phycount, phycount=0;
|
|
|
|
retval = pci_enable_device(pdev);
|
|
if (retval) {
|
|
TW_PRINTK(host, TW_DRIVER, 0x17, "Failed to enable pci device");
|
|
goto out_disable_device;
|
|
}
|
|
|
|
pci_set_master(pdev);
|
|
pci_try_set_mwi(pdev);
|
|
|
|
retval = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
|
|
if (retval)
|
|
retval = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
|
|
if (retval) {
|
|
TW_PRINTK(host, TW_DRIVER, 0x18, "Failed to set dma mask");
|
|
retval = -ENODEV;
|
|
goto out_disable_device;
|
|
}
|
|
|
|
host = scsi_host_alloc(&driver_template, sizeof(TW_Device_Extension));
|
|
if (!host) {
|
|
TW_PRINTK(host, TW_DRIVER, 0x19, "Failed to allocate memory for device extension");
|
|
retval = -ENOMEM;
|
|
goto out_disable_device;
|
|
}
|
|
tw_dev = shost_priv(host);
|
|
|
|
/* Save values to device extension */
|
|
tw_dev->host = host;
|
|
tw_dev->tw_pci_dev = pdev;
|
|
|
|
if (twl_initialize_device_extension(tw_dev)) {
|
|
TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1a, "Failed to initialize device extension");
|
|
retval = -ENOMEM;
|
|
goto out_free_device_extension;
|
|
}
|
|
|
|
/* Request IO regions */
|
|
retval = pci_request_regions(pdev, "3w-sas");
|
|
if (retval) {
|
|
TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1b, "Failed to get mem region");
|
|
goto out_free_device_extension;
|
|
}
|
|
|
|
/* Save base address, use region 1 */
|
|
tw_dev->base_addr = pci_iomap(pdev, 1, 0);
|
|
if (!tw_dev->base_addr) {
|
|
TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1c, "Failed to ioremap");
|
|
retval = -ENOMEM;
|
|
goto out_release_mem_region;
|
|
}
|
|
|
|
/* Disable interrupts on the card */
|
|
TWL_MASK_INTERRUPTS(tw_dev);
|
|
|
|
/* Initialize the card */
|
|
if (twl_reset_sequence(tw_dev, 0)) {
|
|
TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1d, "Controller reset failed during probe");
|
|
retval = -ENOMEM;
|
|
goto out_iounmap;
|
|
}
|
|
|
|
/* Set host specific parameters */
|
|
host->max_id = TW_MAX_UNITS;
|
|
host->max_cmd_len = TW_MAX_CDB_LEN;
|
|
host->max_lun = TW_MAX_LUNS;
|
|
host->max_channel = 0;
|
|
|
|
/* Register the card with the kernel SCSI layer */
|
|
retval = scsi_add_host(host, &pdev->dev);
|
|
if (retval) {
|
|
TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1e, "scsi add host failed");
|
|
goto out_iounmap;
|
|
}
|
|
|
|
pci_set_drvdata(pdev, host);
|
|
|
|
printk(KERN_WARNING "3w-sas: scsi%d: Found an LSI 3ware %s Controller at 0x%llx, IRQ: %d.\n",
|
|
host->host_no,
|
|
(char *)twl_get_param(tw_dev, 1, TW_VERSION_TABLE,
|
|
TW_PARAM_MODEL, TW_PARAM_MODEL_LENGTH),
|
|
(u64)pci_resource_start(pdev, 1), pdev->irq);
|
|
|
|
ptr_phycount = twl_get_param(tw_dev, 2, TW_PARAM_PHY_SUMMARY_TABLE,
|
|
TW_PARAM_PHYCOUNT, TW_PARAM_PHYCOUNT_LENGTH);
|
|
if (ptr_phycount)
|
|
phycount = le32_to_cpu(*(int *)ptr_phycount);
|
|
|
|
printk(KERN_WARNING "3w-sas: scsi%d: Firmware %s, BIOS %s, Phys: %d.\n",
|
|
host->host_no,
|
|
(char *)twl_get_param(tw_dev, 1, TW_VERSION_TABLE,
|
|
TW_PARAM_FWVER, TW_PARAM_FWVER_LENGTH),
|
|
(char *)twl_get_param(tw_dev, 2, TW_VERSION_TABLE,
|
|
TW_PARAM_BIOSVER, TW_PARAM_BIOSVER_LENGTH),
|
|
phycount);
|
|
|
|
/* Try to enable MSI */
|
|
if (use_msi && !pci_enable_msi(pdev))
|
|
set_bit(TW_USING_MSI, &tw_dev->flags);
|
|
|
|
/* Now setup the interrupt handler */
|
|
retval = request_irq(pdev->irq, twl_interrupt, IRQF_SHARED, "3w-sas", tw_dev);
|
|
if (retval) {
|
|
TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1f, "Error requesting IRQ");
|
|
goto out_remove_host;
|
|
}
|
|
|
|
twl_device_extension_list[twl_device_extension_count] = tw_dev;
|
|
twl_device_extension_count++;
|
|
|
|
/* Re-enable interrupts on the card */
|
|
TWL_UNMASK_INTERRUPTS(tw_dev);
|
|
|
|
/* Finally, scan the host */
|
|
scsi_scan_host(host);
|
|
|
|
/* Add sysfs binary files */
|
|
if (sysfs_create_bin_file(&host->shost_dev.kobj, &twl_sysfs_aen_read_attr))
|
|
TW_PRINTK(tw_dev->host, TW_DRIVER, 0x20, "Failed to create sysfs binary file: 3ware_aen_read");
|
|
if (sysfs_create_bin_file(&host->shost_dev.kobj, &twl_sysfs_compat_info_attr))
|
|
TW_PRINTK(tw_dev->host, TW_DRIVER, 0x21, "Failed to create sysfs binary file: 3ware_compat_info");
|
|
|
|
if (twl_major == -1) {
|
|
if ((twl_major = register_chrdev (0, "twl", &twl_fops)) < 0)
|
|
TW_PRINTK(host, TW_DRIVER, 0x22, "Failed to register character device");
|
|
}
|
|
tw_dev->online = 1;
|
|
return 0;
|
|
|
|
out_remove_host:
|
|
if (test_bit(TW_USING_MSI, &tw_dev->flags))
|
|
pci_disable_msi(pdev);
|
|
scsi_remove_host(host);
|
|
out_iounmap:
|
|
iounmap(tw_dev->base_addr);
|
|
out_release_mem_region:
|
|
pci_release_regions(pdev);
|
|
out_free_device_extension:
|
|
twl_free_device_extension(tw_dev);
|
|
scsi_host_put(host);
|
|
out_disable_device:
|
|
pci_disable_device(pdev);
|
|
|
|
return retval;
|
|
} /* End twl_probe() */
|
|
|
|
/* This function is called to remove a device */
|
|
static void twl_remove(struct pci_dev *pdev)
|
|
{
|
|
struct Scsi_Host *host = pci_get_drvdata(pdev);
|
|
TW_Device_Extension *tw_dev;
|
|
|
|
if (!host)
|
|
return;
|
|
|
|
tw_dev = (TW_Device_Extension *)host->hostdata;
|
|
|
|
if (!tw_dev->online)
|
|
return;
|
|
|
|
/* Remove sysfs binary files */
|
|
sysfs_remove_bin_file(&host->shost_dev.kobj, &twl_sysfs_aen_read_attr);
|
|
sysfs_remove_bin_file(&host->shost_dev.kobj, &twl_sysfs_compat_info_attr);
|
|
|
|
scsi_remove_host(tw_dev->host);
|
|
|
|
/* Unregister character device */
|
|
if (twl_major >= 0) {
|
|
unregister_chrdev(twl_major, "twl");
|
|
twl_major = -1;
|
|
}
|
|
|
|
/* Shutdown the card */
|
|
__twl_shutdown(tw_dev);
|
|
|
|
/* Disable MSI if enabled */
|
|
if (test_bit(TW_USING_MSI, &tw_dev->flags))
|
|
pci_disable_msi(pdev);
|
|
|
|
/* Free IO remapping */
|
|
iounmap(tw_dev->base_addr);
|
|
|
|
/* Free up the mem region */
|
|
pci_release_regions(pdev);
|
|
|
|
/* Free up device extension resources */
|
|
twl_free_device_extension(tw_dev);
|
|
|
|
scsi_host_put(tw_dev->host);
|
|
pci_disable_device(pdev);
|
|
twl_device_extension_count--;
|
|
} /* End twl_remove() */
|
|
|
|
/* This function is called on PCI suspend */
|
|
static int __maybe_unused twl_suspend(struct device *dev)
|
|
{
|
|
struct Scsi_Host *host = dev_get_drvdata(dev);
|
|
TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata;
|
|
|
|
printk(KERN_WARNING "3w-sas: Suspending host %d.\n", tw_dev->host->host_no);
|
|
/* Disable interrupts */
|
|
TWL_MASK_INTERRUPTS(tw_dev);
|
|
|
|
free_irq(tw_dev->tw_pci_dev->irq, tw_dev);
|
|
|
|
/* Tell the card we are shutting down */
|
|
if (twl_initconnection(tw_dev, 1, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL)) {
|
|
TW_PRINTK(tw_dev->host, TW_DRIVER, 0x23, "Connection shutdown failed during suspend");
|
|
} else {
|
|
printk(KERN_WARNING "3w-sas: Suspend complete.\n");
|
|
}
|
|
|
|
/* Clear doorbell interrupt */
|
|
TWL_CLEAR_DB_INTERRUPT(tw_dev);
|
|
|
|
return 0;
|
|
} /* End twl_suspend() */
|
|
|
|
/* This function is called on PCI resume */
|
|
static int __maybe_unused twl_resume(struct device *dev)
|
|
{
|
|
int retval = 0;
|
|
struct pci_dev *pdev = to_pci_dev(dev);
|
|
struct Scsi_Host *host = pci_get_drvdata(pdev);
|
|
TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata;
|
|
|
|
printk(KERN_WARNING "3w-sas: Resuming host %d.\n", tw_dev->host->host_no);
|
|
pci_try_set_mwi(pdev);
|
|
|
|
retval = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
|
|
if (retval)
|
|
retval = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
|
|
if (retval) {
|
|
TW_PRINTK(host, TW_DRIVER, 0x25, "Failed to set dma mask during resume");
|
|
retval = -ENODEV;
|
|
goto out_disable_device;
|
|
}
|
|
|
|
/* Initialize the card */
|
|
if (twl_reset_sequence(tw_dev, 0)) {
|
|
retval = -ENODEV;
|
|
goto out_disable_device;
|
|
}
|
|
|
|
/* Now setup the interrupt handler */
|
|
retval = request_irq(pdev->irq, twl_interrupt, IRQF_SHARED, "3w-sas", tw_dev);
|
|
if (retval) {
|
|
TW_PRINTK(tw_dev->host, TW_DRIVER, 0x26, "Error requesting IRQ during resume");
|
|
retval = -ENODEV;
|
|
goto out_disable_device;
|
|
}
|
|
|
|
/* Now enable MSI if enabled */
|
|
if (test_bit(TW_USING_MSI, &tw_dev->flags))
|
|
pci_enable_msi(pdev);
|
|
|
|
/* Re-enable interrupts on the card */
|
|
TWL_UNMASK_INTERRUPTS(tw_dev);
|
|
|
|
printk(KERN_WARNING "3w-sas: Resume complete.\n");
|
|
return 0;
|
|
|
|
out_disable_device:
|
|
scsi_remove_host(host);
|
|
|
|
return retval;
|
|
} /* End twl_resume() */
|
|
|
|
/* PCI Devices supported by this driver */
|
|
static struct pci_device_id twl_pci_tbl[] = {
|
|
{ PCI_VDEVICE(3WARE, PCI_DEVICE_ID_3WARE_9750) },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(pci, twl_pci_tbl);
|
|
|
|
static SIMPLE_DEV_PM_OPS(twl_pm_ops, twl_suspend, twl_resume);
|
|
|
|
/* pci_driver initializer */
|
|
static struct pci_driver twl_driver = {
|
|
.name = "3w-sas",
|
|
.id_table = twl_pci_tbl,
|
|
.probe = twl_probe,
|
|
.remove = twl_remove,
|
|
.driver.pm = &twl_pm_ops,
|
|
.shutdown = twl_shutdown
|
|
};
|
|
|
|
/* This function is called on driver initialization */
|
|
static int __init twl_init(void)
|
|
{
|
|
printk(KERN_INFO "LSI 3ware SAS/SATA-RAID Controller device driver for Linux v%s.\n", TW_DRIVER_VERSION);
|
|
|
|
return pci_register_driver(&twl_driver);
|
|
} /* End twl_init() */
|
|
|
|
/* This function is called on driver exit */
|
|
static void __exit twl_exit(void)
|
|
{
|
|
pci_unregister_driver(&twl_driver);
|
|
} /* End twl_exit() */
|
|
|
|
module_init(twl_init);
|
|
module_exit(twl_exit);
|
|
|