![Shawn Lin](/assets/img/avatar_default.png)
We don't need to use kzalloc as we will always memset the local_atto_ioctl later. Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com> Acked-by: Bradley Grove <bgrove@attotech.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
1975 lines
48 KiB
C
1975 lines
48 KiB
C
/*
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* linux/drivers/scsi/esas2r/esas2r_main.c
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* For use with ATTO ExpressSAS R6xx SAS/SATA RAID controllers
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*
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* Copyright (c) 2001-2013 ATTO Technology, Inc.
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* (mailto:linuxdrivers@attotech.com)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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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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* 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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*
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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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*
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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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
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* USA.
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*/
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#include "esas2r.h"
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MODULE_DESCRIPTION(ESAS2R_DRVR_NAME ": " ESAS2R_LONGNAME " driver");
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MODULE_AUTHOR("ATTO Technology, Inc.");
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MODULE_LICENSE("GPL");
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MODULE_VERSION(ESAS2R_VERSION_STR);
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/* global definitions */
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static int found_adapters;
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struct esas2r_adapter *esas2r_adapters[MAX_ADAPTERS];
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#define ESAS2R_VDA_EVENT_PORT1 54414
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#define ESAS2R_VDA_EVENT_PORT2 54415
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#define ESAS2R_VDA_EVENT_SOCK_COUNT 2
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static struct esas2r_adapter *esas2r_adapter_from_kobj(struct kobject *kobj)
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{
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struct device *dev = container_of(kobj, struct device, kobj);
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struct Scsi_Host *host = class_to_shost(dev);
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return (struct esas2r_adapter *)host->hostdata;
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}
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static ssize_t read_fw(struct file *file, struct kobject *kobj,
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struct bin_attribute *attr,
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char *buf, loff_t off, size_t count)
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{
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struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj);
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return esas2r_read_fw(a, buf, off, count);
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}
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static ssize_t write_fw(struct file *file, struct kobject *kobj,
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struct bin_attribute *attr,
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char *buf, loff_t off, size_t count)
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{
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struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj);
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return esas2r_write_fw(a, buf, off, count);
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}
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static ssize_t read_fs(struct file *file, struct kobject *kobj,
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struct bin_attribute *attr,
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char *buf, loff_t off, size_t count)
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{
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struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj);
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return esas2r_read_fs(a, buf, off, count);
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}
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static ssize_t write_fs(struct file *file, struct kobject *kobj,
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struct bin_attribute *attr,
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char *buf, loff_t off, size_t count)
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{
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struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj);
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int length = min(sizeof(struct esas2r_ioctl_fs), count);
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int result = 0;
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result = esas2r_write_fs(a, buf, off, count);
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if (result < 0)
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result = 0;
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return length;
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}
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static ssize_t read_vda(struct file *file, struct kobject *kobj,
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struct bin_attribute *attr,
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char *buf, loff_t off, size_t count)
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{
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struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj);
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return esas2r_read_vda(a, buf, off, count);
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}
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static ssize_t write_vda(struct file *file, struct kobject *kobj,
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struct bin_attribute *attr,
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char *buf, loff_t off, size_t count)
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{
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struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj);
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return esas2r_write_vda(a, buf, off, count);
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}
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static ssize_t read_live_nvram(struct file *file, struct kobject *kobj,
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struct bin_attribute *attr,
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char *buf, loff_t off, size_t count)
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{
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struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj);
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int length = min_t(size_t, sizeof(struct esas2r_sas_nvram), PAGE_SIZE);
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memcpy(buf, a->nvram, length);
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return length;
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}
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static ssize_t write_live_nvram(struct file *file, struct kobject *kobj,
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struct bin_attribute *attr,
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char *buf, loff_t off, size_t count)
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{
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struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj);
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struct esas2r_request *rq;
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int result = -EFAULT;
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rq = esas2r_alloc_request(a);
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if (rq == NULL)
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return -ENOMEM;
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if (esas2r_write_params(a, rq, (struct esas2r_sas_nvram *)buf))
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result = count;
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esas2r_free_request(a, rq);
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return result;
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}
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static ssize_t read_default_nvram(struct file *file, struct kobject *kobj,
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struct bin_attribute *attr,
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char *buf, loff_t off, size_t count)
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{
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struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj);
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esas2r_nvram_get_defaults(a, (struct esas2r_sas_nvram *)buf);
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return sizeof(struct esas2r_sas_nvram);
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}
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static ssize_t read_hw(struct file *file, struct kobject *kobj,
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struct bin_attribute *attr,
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char *buf, loff_t off, size_t count)
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{
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struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj);
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int length = min_t(size_t, sizeof(struct atto_ioctl), PAGE_SIZE);
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if (!a->local_atto_ioctl)
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return -ENOMEM;
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if (handle_hba_ioctl(a, a->local_atto_ioctl) != IOCTL_SUCCESS)
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return -ENOMEM;
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memcpy(buf, a->local_atto_ioctl, length);
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return length;
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}
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static ssize_t write_hw(struct file *file, struct kobject *kobj,
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struct bin_attribute *attr,
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char *buf, loff_t off, size_t count)
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{
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struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj);
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int length = min(sizeof(struct atto_ioctl), count);
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if (!a->local_atto_ioctl) {
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a->local_atto_ioctl = kmalloc(sizeof(struct atto_ioctl),
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GFP_KERNEL);
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if (a->local_atto_ioctl == NULL) {
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esas2r_log(ESAS2R_LOG_WARN,
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"write_hw kzalloc failed for %d bytes",
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sizeof(struct atto_ioctl));
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return -ENOMEM;
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}
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}
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memset(a->local_atto_ioctl, 0, sizeof(struct atto_ioctl));
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memcpy(a->local_atto_ioctl, buf, length);
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return length;
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}
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#define ESAS2R_RW_BIN_ATTR(_name) \
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struct bin_attribute bin_attr_ ## _name = { \
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.attr = \
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{ .name = __stringify(_name), .mode = S_IRUSR | S_IWUSR }, \
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.size = 0, \
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.read = read_ ## _name, \
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.write = write_ ## _name }
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ESAS2R_RW_BIN_ATTR(fw);
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ESAS2R_RW_BIN_ATTR(fs);
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ESAS2R_RW_BIN_ATTR(vda);
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ESAS2R_RW_BIN_ATTR(hw);
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ESAS2R_RW_BIN_ATTR(live_nvram);
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struct bin_attribute bin_attr_default_nvram = {
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.attr = { .name = "default_nvram", .mode = S_IRUGO },
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.size = 0,
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.read = read_default_nvram,
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.write = NULL
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};
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static struct scsi_host_template driver_template = {
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.module = THIS_MODULE,
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.show_info = esas2r_show_info,
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.name = ESAS2R_LONGNAME,
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.release = esas2r_release,
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.info = esas2r_info,
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.ioctl = esas2r_ioctl,
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.queuecommand = esas2r_queuecommand,
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.eh_abort_handler = esas2r_eh_abort,
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.eh_device_reset_handler = esas2r_device_reset,
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.eh_bus_reset_handler = esas2r_bus_reset,
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.eh_host_reset_handler = esas2r_host_reset,
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.eh_target_reset_handler = esas2r_target_reset,
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.can_queue = 128,
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.this_id = -1,
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.sg_tablesize = SG_CHUNK_SIZE,
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.cmd_per_lun =
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ESAS2R_DEFAULT_CMD_PER_LUN,
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.present = 0,
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.unchecked_isa_dma = 0,
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.use_clustering = ENABLE_CLUSTERING,
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.emulated = 0,
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.proc_name = ESAS2R_DRVR_NAME,
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.change_queue_depth = scsi_change_queue_depth,
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.max_sectors = 0xFFFF,
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};
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int sgl_page_size = 512;
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module_param(sgl_page_size, int, 0);
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MODULE_PARM_DESC(sgl_page_size,
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"Scatter/gather list (SGL) page size in number of S/G "
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"entries. If your application is doing a lot of very large "
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"transfers, you may want to increase the SGL page size. "
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"Default 512.");
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int num_sg_lists = 1024;
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module_param(num_sg_lists, int, 0);
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MODULE_PARM_DESC(num_sg_lists,
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"Number of scatter/gather lists. Default 1024.");
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int sg_tablesize = SG_CHUNK_SIZE;
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module_param(sg_tablesize, int, 0);
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MODULE_PARM_DESC(sg_tablesize,
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"Maximum number of entries in a scatter/gather table.");
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int num_requests = 256;
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module_param(num_requests, int, 0);
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MODULE_PARM_DESC(num_requests,
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"Number of requests. Default 256.");
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int num_ae_requests = 4;
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module_param(num_ae_requests, int, 0);
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MODULE_PARM_DESC(num_ae_requests,
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"Number of VDA asynchromous event requests. Default 4.");
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int cmd_per_lun = ESAS2R_DEFAULT_CMD_PER_LUN;
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module_param(cmd_per_lun, int, 0);
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MODULE_PARM_DESC(cmd_per_lun,
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"Maximum number of commands per LUN. Default "
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DEFINED_NUM_TO_STR(ESAS2R_DEFAULT_CMD_PER_LUN) ".");
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int can_queue = 128;
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module_param(can_queue, int, 0);
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MODULE_PARM_DESC(can_queue,
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"Maximum number of commands per adapter. Default 128.");
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int esas2r_max_sectors = 0xFFFF;
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module_param(esas2r_max_sectors, int, 0);
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MODULE_PARM_DESC(esas2r_max_sectors,
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"Maximum number of disk sectors in a single data transfer. "
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"Default 65535 (largest possible setting).");
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int interrupt_mode = 1;
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module_param(interrupt_mode, int, 0);
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MODULE_PARM_DESC(interrupt_mode,
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"Defines the interrupt mode to use. 0 for legacy"
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", 1 for MSI. Default is MSI (1).");
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static struct pci_device_id
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esas2r_pci_table[] = {
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{ ATTO_VENDOR_ID, 0x0049, ATTO_VENDOR_ID, 0x0049,
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0,
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0, 0 },
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{ ATTO_VENDOR_ID, 0x0049, ATTO_VENDOR_ID, 0x004A,
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0,
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0, 0 },
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{ ATTO_VENDOR_ID, 0x0049, ATTO_VENDOR_ID, 0x004B,
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0,
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0, 0 },
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{ ATTO_VENDOR_ID, 0x0049, ATTO_VENDOR_ID, 0x004C,
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0,
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0, 0 },
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{ ATTO_VENDOR_ID, 0x0049, ATTO_VENDOR_ID, 0x004D,
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0,
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0, 0 },
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{ ATTO_VENDOR_ID, 0x0049, ATTO_VENDOR_ID, 0x004E,
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0,
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0, 0 },
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{ 0, 0, 0, 0,
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0,
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0, 0 }
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};
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MODULE_DEVICE_TABLE(pci, esas2r_pci_table);
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static int
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esas2r_probe(struct pci_dev *pcid, const struct pci_device_id *id);
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static void
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esas2r_remove(struct pci_dev *pcid);
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static struct pci_driver
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esas2r_pci_driver = {
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.name = ESAS2R_DRVR_NAME,
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.id_table = esas2r_pci_table,
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.probe = esas2r_probe,
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.remove = esas2r_remove,
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.suspend = esas2r_suspend,
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.resume = esas2r_resume,
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};
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static int esas2r_probe(struct pci_dev *pcid,
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const struct pci_device_id *id)
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{
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struct Scsi_Host *host = NULL;
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struct esas2r_adapter *a;
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int err;
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size_t host_alloc_size = sizeof(struct esas2r_adapter)
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+ ((num_requests) +
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1) * sizeof(struct esas2r_request);
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esas2r_log_dev(ESAS2R_LOG_DEBG, &(pcid->dev),
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"esas2r_probe() 0x%02x 0x%02x 0x%02x 0x%02x",
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pcid->vendor,
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pcid->device,
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pcid->subsystem_vendor,
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pcid->subsystem_device);
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esas2r_log_dev(ESAS2R_LOG_INFO, &(pcid->dev),
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"before pci_enable_device() "
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"enable_cnt: %d",
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pcid->enable_cnt.counter);
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err = pci_enable_device(pcid);
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if (err != 0) {
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esas2r_log_dev(ESAS2R_LOG_CRIT, &(pcid->dev),
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"pci_enable_device() FAIL (%d)",
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err);
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return -ENODEV;
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}
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esas2r_log_dev(ESAS2R_LOG_INFO, &(pcid->dev),
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"pci_enable_device() OK");
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esas2r_log_dev(ESAS2R_LOG_INFO, &(pcid->dev),
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"after pci_enable_device() enable_cnt: %d",
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pcid->enable_cnt.counter);
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host = scsi_host_alloc(&driver_template, host_alloc_size);
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if (host == NULL) {
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esas2r_log(ESAS2R_LOG_CRIT, "scsi_host_alloc() FAIL");
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return -ENODEV;
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}
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memset(host->hostdata, 0, host_alloc_size);
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a = (struct esas2r_adapter *)host->hostdata;
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esas2r_log(ESAS2R_LOG_INFO, "scsi_host_alloc() OK host: %p", host);
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/* override max LUN and max target id */
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host->max_id = ESAS2R_MAX_ID + 1;
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host->max_lun = 255;
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/* we can handle 16-byte CDbs */
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host->max_cmd_len = 16;
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host->can_queue = can_queue;
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host->cmd_per_lun = cmd_per_lun;
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host->this_id = host->max_id + 1;
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host->max_channel = 0;
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host->unique_id = found_adapters;
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host->sg_tablesize = sg_tablesize;
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host->max_sectors = esas2r_max_sectors;
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/* set to bus master for BIOses that don't do it for us */
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esas2r_log(ESAS2R_LOG_INFO, "pci_set_master() called");
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pci_set_master(pcid);
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if (!esas2r_init_adapter(host, pcid, found_adapters)) {
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esas2r_log(ESAS2R_LOG_CRIT,
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"unable to initialize device at PCI bus %x:%x",
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pcid->bus->number,
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pcid->devfn);
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esas2r_log_dev(ESAS2R_LOG_INFO, &(host->shost_gendev),
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"scsi_host_put() called");
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scsi_host_put(host);
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return 0;
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}
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esas2r_log(ESAS2R_LOG_INFO, "pci_set_drvdata(%p, %p) called", pcid,
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host->hostdata);
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pci_set_drvdata(pcid, host);
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esas2r_log(ESAS2R_LOG_INFO, "scsi_add_host() called");
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err = scsi_add_host(host, &pcid->dev);
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if (err) {
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esas2r_log(ESAS2R_LOG_CRIT, "scsi_add_host returned %d", err);
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esas2r_log_dev(ESAS2R_LOG_CRIT, &(host->shost_gendev),
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"scsi_add_host() FAIL");
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esas2r_log_dev(ESAS2R_LOG_INFO, &(host->shost_gendev),
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"scsi_host_put() called");
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scsi_host_put(host);
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|
|
esas2r_log_dev(ESAS2R_LOG_INFO, &(host->shost_gendev),
|
|
"pci_set_drvdata(%p, NULL) called",
|
|
pcid);
|
|
|
|
pci_set_drvdata(pcid, NULL);
|
|
|
|
return -ENODEV;
|
|
}
|
|
|
|
|
|
esas2r_fw_event_on(a);
|
|
|
|
esas2r_log_dev(ESAS2R_LOG_INFO, &(host->shost_gendev),
|
|
"scsi_scan_host() called");
|
|
|
|
scsi_scan_host(host);
|
|
|
|
/* Add sysfs binary files */
|
|
if (sysfs_create_bin_file(&host->shost_dev.kobj, &bin_attr_fw))
|
|
esas2r_log_dev(ESAS2R_LOG_WARN, &(host->shost_gendev),
|
|
"Failed to create sysfs binary file: fw");
|
|
else
|
|
a->sysfs_fw_created = 1;
|
|
|
|
if (sysfs_create_bin_file(&host->shost_dev.kobj, &bin_attr_fs))
|
|
esas2r_log_dev(ESAS2R_LOG_WARN, &(host->shost_gendev),
|
|
"Failed to create sysfs binary file: fs");
|
|
else
|
|
a->sysfs_fs_created = 1;
|
|
|
|
if (sysfs_create_bin_file(&host->shost_dev.kobj, &bin_attr_vda))
|
|
esas2r_log_dev(ESAS2R_LOG_WARN, &(host->shost_gendev),
|
|
"Failed to create sysfs binary file: vda");
|
|
else
|
|
a->sysfs_vda_created = 1;
|
|
|
|
if (sysfs_create_bin_file(&host->shost_dev.kobj, &bin_attr_hw))
|
|
esas2r_log_dev(ESAS2R_LOG_WARN, &(host->shost_gendev),
|
|
"Failed to create sysfs binary file: hw");
|
|
else
|
|
a->sysfs_hw_created = 1;
|
|
|
|
if (sysfs_create_bin_file(&host->shost_dev.kobj, &bin_attr_live_nvram))
|
|
esas2r_log_dev(ESAS2R_LOG_WARN, &(host->shost_gendev),
|
|
"Failed to create sysfs binary file: live_nvram");
|
|
else
|
|
a->sysfs_live_nvram_created = 1;
|
|
|
|
if (sysfs_create_bin_file(&host->shost_dev.kobj,
|
|
&bin_attr_default_nvram))
|
|
esas2r_log_dev(ESAS2R_LOG_WARN, &(host->shost_gendev),
|
|
"Failed to create sysfs binary file: default_nvram");
|
|
else
|
|
a->sysfs_default_nvram_created = 1;
|
|
|
|
found_adapters++;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void esas2r_remove(struct pci_dev *pdev)
|
|
{
|
|
struct Scsi_Host *host;
|
|
int index;
|
|
|
|
if (pdev == NULL) {
|
|
esas2r_log(ESAS2R_LOG_WARN, "esas2r_remove pdev==NULL");
|
|
return;
|
|
}
|
|
|
|
host = pci_get_drvdata(pdev);
|
|
|
|
if (host == NULL) {
|
|
/*
|
|
* this can happen if pci_set_drvdata was already called
|
|
* to clear the host pointer. if this is the case, we
|
|
* are okay; this channel has already been cleaned up.
|
|
*/
|
|
|
|
return;
|
|
}
|
|
|
|
esas2r_log_dev(ESAS2R_LOG_INFO, &(pdev->dev),
|
|
"esas2r_remove(%p) called; "
|
|
"host:%p", pdev,
|
|
host);
|
|
|
|
index = esas2r_cleanup(host);
|
|
|
|
if (index < 0)
|
|
esas2r_log_dev(ESAS2R_LOG_WARN, &(pdev->dev),
|
|
"unknown host in %s",
|
|
__func__);
|
|
|
|
found_adapters--;
|
|
|
|
/* if this was the last adapter, clean up the rest of the driver */
|
|
|
|
if (found_adapters == 0)
|
|
esas2r_cleanup(NULL);
|
|
}
|
|
|
|
static int __init esas2r_init(void)
|
|
{
|
|
int i;
|
|
|
|
esas2r_log(ESAS2R_LOG_INFO, "%s called", __func__);
|
|
|
|
/* verify valid parameters */
|
|
|
|
if (can_queue < 1) {
|
|
esas2r_log(ESAS2R_LOG_WARN,
|
|
"warning: can_queue must be at least 1, value "
|
|
"forced.");
|
|
can_queue = 1;
|
|
} else if (can_queue > 2048) {
|
|
esas2r_log(ESAS2R_LOG_WARN,
|
|
"warning: can_queue must be no larger than 2048, "
|
|
"value forced.");
|
|
can_queue = 2048;
|
|
}
|
|
|
|
if (cmd_per_lun < 1) {
|
|
esas2r_log(ESAS2R_LOG_WARN,
|
|
"warning: cmd_per_lun must be at least 1, value "
|
|
"forced.");
|
|
cmd_per_lun = 1;
|
|
} else if (cmd_per_lun > 2048) {
|
|
esas2r_log(ESAS2R_LOG_WARN,
|
|
"warning: cmd_per_lun must be no larger than "
|
|
"2048, value forced.");
|
|
cmd_per_lun = 2048;
|
|
}
|
|
|
|
if (sg_tablesize < 32) {
|
|
esas2r_log(ESAS2R_LOG_WARN,
|
|
"warning: sg_tablesize must be at least 32, "
|
|
"value forced.");
|
|
sg_tablesize = 32;
|
|
}
|
|
|
|
if (esas2r_max_sectors < 1) {
|
|
esas2r_log(ESAS2R_LOG_WARN,
|
|
"warning: esas2r_max_sectors must be at least "
|
|
"1, value forced.");
|
|
esas2r_max_sectors = 1;
|
|
} else if (esas2r_max_sectors > 0xffff) {
|
|
esas2r_log(ESAS2R_LOG_WARN,
|
|
"warning: esas2r_max_sectors must be no larger "
|
|
"than 0xffff, value forced.");
|
|
esas2r_max_sectors = 0xffff;
|
|
}
|
|
|
|
sgl_page_size &= ~(ESAS2R_SGL_ALIGN - 1);
|
|
|
|
if (sgl_page_size < SGL_PG_SZ_MIN)
|
|
sgl_page_size = SGL_PG_SZ_MIN;
|
|
else if (sgl_page_size > SGL_PG_SZ_MAX)
|
|
sgl_page_size = SGL_PG_SZ_MAX;
|
|
|
|
if (num_sg_lists < NUM_SGL_MIN)
|
|
num_sg_lists = NUM_SGL_MIN;
|
|
else if (num_sg_lists > NUM_SGL_MAX)
|
|
num_sg_lists = NUM_SGL_MAX;
|
|
|
|
if (num_requests < NUM_REQ_MIN)
|
|
num_requests = NUM_REQ_MIN;
|
|
else if (num_requests > NUM_REQ_MAX)
|
|
num_requests = NUM_REQ_MAX;
|
|
|
|
if (num_ae_requests < NUM_AE_MIN)
|
|
num_ae_requests = NUM_AE_MIN;
|
|
else if (num_ae_requests > NUM_AE_MAX)
|
|
num_ae_requests = NUM_AE_MAX;
|
|
|
|
/* set up other globals */
|
|
|
|
for (i = 0; i < MAX_ADAPTERS; i++)
|
|
esas2r_adapters[i] = NULL;
|
|
|
|
/* initialize */
|
|
|
|
driver_template.module = THIS_MODULE;
|
|
|
|
if (pci_register_driver(&esas2r_pci_driver) != 0)
|
|
esas2r_log(ESAS2R_LOG_CRIT, "pci_register_driver FAILED");
|
|
else
|
|
esas2r_log(ESAS2R_LOG_INFO, "pci_register_driver() OK");
|
|
|
|
if (!found_adapters) {
|
|
pci_unregister_driver(&esas2r_pci_driver);
|
|
esas2r_cleanup(NULL);
|
|
|
|
esas2r_log(ESAS2R_LOG_CRIT,
|
|
"driver will not be loaded because no ATTO "
|
|
"%s devices were found",
|
|
ESAS2R_DRVR_NAME);
|
|
return -1;
|
|
} else {
|
|
esas2r_log(ESAS2R_LOG_INFO, "found %d adapters",
|
|
found_adapters);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Handle ioctl calls to "/proc/scsi/esas2r/ATTOnode" */
|
|
static const struct file_operations esas2r_proc_fops = {
|
|
.compat_ioctl = esas2r_proc_ioctl,
|
|
.unlocked_ioctl = esas2r_proc_ioctl,
|
|
};
|
|
|
|
static struct Scsi_Host *esas2r_proc_host;
|
|
static int esas2r_proc_major;
|
|
|
|
long esas2r_proc_ioctl(struct file *fp, unsigned int cmd, unsigned long arg)
|
|
{
|
|
return esas2r_ioctl_handler(esas2r_proc_host->hostdata,
|
|
(int)cmd, (void __user *)arg);
|
|
}
|
|
|
|
static void __exit esas2r_exit(void)
|
|
{
|
|
esas2r_log(ESAS2R_LOG_INFO, "%s called", __func__);
|
|
|
|
if (esas2r_proc_major > 0) {
|
|
esas2r_log(ESAS2R_LOG_INFO, "unregister proc");
|
|
|
|
remove_proc_entry(ATTONODE_NAME,
|
|
esas2r_proc_host->hostt->proc_dir);
|
|
unregister_chrdev(esas2r_proc_major, ESAS2R_DRVR_NAME);
|
|
|
|
esas2r_proc_major = 0;
|
|
}
|
|
|
|
esas2r_log(ESAS2R_LOG_INFO, "pci_unregister_driver() called");
|
|
|
|
pci_unregister_driver(&esas2r_pci_driver);
|
|
}
|
|
|
|
int esas2r_show_info(struct seq_file *m, struct Scsi_Host *sh)
|
|
{
|
|
struct esas2r_adapter *a = (struct esas2r_adapter *)sh->hostdata;
|
|
|
|
struct esas2r_target *t;
|
|
int dev_count = 0;
|
|
|
|
esas2r_log(ESAS2R_LOG_DEBG, "esas2r_show_info (%p,%d)", m, sh->host_no);
|
|
|
|
seq_printf(m, ESAS2R_LONGNAME "\n"
|
|
"Driver version: "ESAS2R_VERSION_STR "\n"
|
|
"Flash version: %s\n"
|
|
"Firmware version: %s\n"
|
|
"Copyright "ESAS2R_COPYRIGHT_YEARS "\n"
|
|
"http://www.attotech.com\n"
|
|
"\n",
|
|
a->flash_rev,
|
|
a->fw_rev[0] ? a->fw_rev : "(none)");
|
|
|
|
|
|
seq_printf(m, "Adapter information:\n"
|
|
"--------------------\n"
|
|
"Model: %s\n"
|
|
"SAS address: %02X%02X%02X%02X:%02X%02X%02X%02X\n",
|
|
esas2r_get_model_name(a),
|
|
a->nvram->sas_addr[0],
|
|
a->nvram->sas_addr[1],
|
|
a->nvram->sas_addr[2],
|
|
a->nvram->sas_addr[3],
|
|
a->nvram->sas_addr[4],
|
|
a->nvram->sas_addr[5],
|
|
a->nvram->sas_addr[6],
|
|
a->nvram->sas_addr[7]);
|
|
|
|
seq_puts(m, "\n"
|
|
"Discovered devices:\n"
|
|
"\n"
|
|
" # Target ID\n"
|
|
"---------------\n");
|
|
|
|
for (t = a->targetdb; t < a->targetdb_end; t++)
|
|
if (t->buffered_target_state == TS_PRESENT) {
|
|
seq_printf(m, " %3d %3d\n",
|
|
++dev_count,
|
|
(u16)(uintptr_t)(t - a->targetdb));
|
|
}
|
|
|
|
if (dev_count == 0)
|
|
seq_puts(m, "none\n");
|
|
|
|
seq_putc(m, '\n');
|
|
return 0;
|
|
|
|
}
|
|
|
|
int esas2r_release(struct Scsi_Host *sh)
|
|
{
|
|
esas2r_log_dev(ESAS2R_LOG_INFO, &(sh->shost_gendev),
|
|
"esas2r_release() called");
|
|
|
|
esas2r_cleanup(sh);
|
|
if (sh->irq)
|
|
free_irq(sh->irq, NULL);
|
|
scsi_unregister(sh);
|
|
return 0;
|
|
}
|
|
|
|
const char *esas2r_info(struct Scsi_Host *sh)
|
|
{
|
|
struct esas2r_adapter *a = (struct esas2r_adapter *)sh->hostdata;
|
|
static char esas2r_info_str[512];
|
|
|
|
esas2r_log_dev(ESAS2R_LOG_INFO, &(sh->shost_gendev),
|
|
"esas2r_info() called");
|
|
|
|
/*
|
|
* if we haven't done so already, register as a char driver
|
|
* and stick a node under "/proc/scsi/esas2r/ATTOnode"
|
|
*/
|
|
|
|
if (esas2r_proc_major <= 0) {
|
|
esas2r_proc_host = sh;
|
|
|
|
esas2r_proc_major = register_chrdev(0, ESAS2R_DRVR_NAME,
|
|
&esas2r_proc_fops);
|
|
|
|
esas2r_log_dev(ESAS2R_LOG_DEBG, &(sh->shost_gendev),
|
|
"register_chrdev (major %d)",
|
|
esas2r_proc_major);
|
|
|
|
if (esas2r_proc_major > 0) {
|
|
struct proc_dir_entry *pde;
|
|
|
|
pde = proc_create(ATTONODE_NAME, 0,
|
|
sh->hostt->proc_dir,
|
|
&esas2r_proc_fops);
|
|
|
|
if (!pde) {
|
|
esas2r_log_dev(ESAS2R_LOG_WARN,
|
|
&(sh->shost_gendev),
|
|
"failed to create_proc_entry");
|
|
esas2r_proc_major = -1;
|
|
}
|
|
}
|
|
}
|
|
|
|
sprintf(esas2r_info_str,
|
|
ESAS2R_LONGNAME " (bus 0x%02X, device 0x%02X, IRQ 0x%02X)"
|
|
" driver version: "ESAS2R_VERSION_STR " firmware version: "
|
|
"%s\n",
|
|
a->pcid->bus->number, a->pcid->devfn, a->pcid->irq,
|
|
a->fw_rev[0] ? a->fw_rev : "(none)");
|
|
|
|
return esas2r_info_str;
|
|
}
|
|
|
|
/* Callback for building a request scatter/gather list */
|
|
static u32 get_physaddr_from_sgc(struct esas2r_sg_context *sgc, u64 *addr)
|
|
{
|
|
u32 len;
|
|
|
|
if (likely(sgc->cur_offset == sgc->exp_offset)) {
|
|
/*
|
|
* the normal case: caller used all bytes from previous call, so
|
|
* expected offset is the same as the current offset.
|
|
*/
|
|
|
|
if (sgc->sgel_count < sgc->num_sgel) {
|
|
/* retrieve next segment, except for first time */
|
|
if (sgc->exp_offset > (u8 *)0) {
|
|
/* advance current segment */
|
|
sgc->cur_sgel = sg_next(sgc->cur_sgel);
|
|
++(sgc->sgel_count);
|
|
}
|
|
|
|
|
|
len = sg_dma_len(sgc->cur_sgel);
|
|
(*addr) = sg_dma_address(sgc->cur_sgel);
|
|
|
|
/* save the total # bytes returned to caller so far */
|
|
sgc->exp_offset += len;
|
|
|
|
} else {
|
|
len = 0;
|
|
}
|
|
} else if (sgc->cur_offset < sgc->exp_offset) {
|
|
/*
|
|
* caller did not use all bytes from previous call. need to
|
|
* compute the address based on current segment.
|
|
*/
|
|
|
|
len = sg_dma_len(sgc->cur_sgel);
|
|
(*addr) = sg_dma_address(sgc->cur_sgel);
|
|
|
|
sgc->exp_offset -= len;
|
|
|
|
/* calculate PA based on prev segment address and offsets */
|
|
*addr = *addr +
|
|
(sgc->cur_offset - sgc->exp_offset);
|
|
|
|
sgc->exp_offset += len;
|
|
|
|
/* re-calculate length based on offset */
|
|
len = lower_32_bits(
|
|
sgc->exp_offset - sgc->cur_offset);
|
|
} else { /* if ( sgc->cur_offset > sgc->exp_offset ) */
|
|
/*
|
|
* we don't expect the caller to skip ahead.
|
|
* cur_offset will never exceed the len we return
|
|
*/
|
|
len = 0;
|
|
}
|
|
|
|
return len;
|
|
}
|
|
|
|
int esas2r_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd)
|
|
{
|
|
struct esas2r_adapter *a =
|
|
(struct esas2r_adapter *)cmd->device->host->hostdata;
|
|
struct esas2r_request *rq;
|
|
struct esas2r_sg_context sgc;
|
|
unsigned bufflen;
|
|
|
|
/* Assume success, if it fails we will fix the result later. */
|
|
cmd->result = DID_OK << 16;
|
|
|
|
if (unlikely(test_bit(AF_DEGRADED_MODE, &a->flags))) {
|
|
cmd->result = DID_NO_CONNECT << 16;
|
|
cmd->scsi_done(cmd);
|
|
return 0;
|
|
}
|
|
|
|
rq = esas2r_alloc_request(a);
|
|
if (unlikely(rq == NULL)) {
|
|
esas2r_debug("esas2r_alloc_request failed");
|
|
return SCSI_MLQUEUE_HOST_BUSY;
|
|
}
|
|
|
|
rq->cmd = cmd;
|
|
bufflen = scsi_bufflen(cmd);
|
|
|
|
if (likely(bufflen != 0)) {
|
|
if (cmd->sc_data_direction == DMA_TO_DEVICE)
|
|
rq->vrq->scsi.flags |= cpu_to_le32(FCP_CMND_WRD);
|
|
else if (cmd->sc_data_direction == DMA_FROM_DEVICE)
|
|
rq->vrq->scsi.flags |= cpu_to_le32(FCP_CMND_RDD);
|
|
}
|
|
|
|
memcpy(rq->vrq->scsi.cdb, cmd->cmnd, cmd->cmd_len);
|
|
rq->vrq->scsi.length = cpu_to_le32(bufflen);
|
|
rq->target_id = cmd->device->id;
|
|
rq->vrq->scsi.flags |= cpu_to_le32(cmd->device->lun);
|
|
rq->sense_buf = cmd->sense_buffer;
|
|
rq->sense_len = SCSI_SENSE_BUFFERSIZE;
|
|
|
|
esas2r_sgc_init(&sgc, a, rq, NULL);
|
|
|
|
sgc.length = bufflen;
|
|
sgc.cur_offset = NULL;
|
|
|
|
sgc.cur_sgel = scsi_sglist(cmd);
|
|
sgc.exp_offset = NULL;
|
|
sgc.num_sgel = scsi_dma_map(cmd);
|
|
sgc.sgel_count = 0;
|
|
|
|
if (unlikely(sgc.num_sgel < 0)) {
|
|
esas2r_free_request(a, rq);
|
|
return SCSI_MLQUEUE_HOST_BUSY;
|
|
}
|
|
|
|
sgc.get_phys_addr = (PGETPHYSADDR)get_physaddr_from_sgc;
|
|
|
|
if (unlikely(!esas2r_build_sg_list(a, rq, &sgc))) {
|
|
scsi_dma_unmap(cmd);
|
|
esas2r_free_request(a, rq);
|
|
return SCSI_MLQUEUE_HOST_BUSY;
|
|
}
|
|
|
|
esas2r_debug("start request %p to %d:%d\n", rq, (int)cmd->device->id,
|
|
(int)cmd->device->lun);
|
|
|
|
esas2r_start_request(a, rq);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void complete_task_management_request(struct esas2r_adapter *a,
|
|
struct esas2r_request *rq)
|
|
{
|
|
(*rq->task_management_status_ptr) = rq->req_stat;
|
|
esas2r_free_request(a, rq);
|
|
}
|
|
|
|
/**
|
|
* Searches the specified queue for the specified queue for the command
|
|
* to abort.
|
|
*
|
|
* @param [in] a
|
|
* @param [in] abort_request
|
|
* @param [in] cmd
|
|
* t
|
|
* @return 0 on failure, 1 if command was not found, 2 if command was found
|
|
*/
|
|
static int esas2r_check_active_queue(struct esas2r_adapter *a,
|
|
struct esas2r_request **abort_request,
|
|
struct scsi_cmnd *cmd,
|
|
struct list_head *queue)
|
|
{
|
|
bool found = false;
|
|
struct esas2r_request *ar = *abort_request;
|
|
struct esas2r_request *rq;
|
|
struct list_head *element, *next;
|
|
|
|
list_for_each_safe(element, next, queue) {
|
|
|
|
rq = list_entry(element, struct esas2r_request, req_list);
|
|
|
|
if (rq->cmd == cmd) {
|
|
|
|
/* Found the request. See what to do with it. */
|
|
if (queue == &a->active_list) {
|
|
/*
|
|
* We are searching the active queue, which
|
|
* means that we need to send an abort request
|
|
* to the firmware.
|
|
*/
|
|
ar = esas2r_alloc_request(a);
|
|
if (ar == NULL) {
|
|
esas2r_log_dev(ESAS2R_LOG_WARN,
|
|
&(a->host->shost_gendev),
|
|
"unable to allocate an abort request for cmd %p",
|
|
cmd);
|
|
return 0; /* Failure */
|
|
}
|
|
|
|
/*
|
|
* Task management request must be formatted
|
|
* with a lock held.
|
|
*/
|
|
ar->sense_len = 0;
|
|
ar->vrq->scsi.length = 0;
|
|
ar->target_id = rq->target_id;
|
|
ar->vrq->scsi.flags |= cpu_to_le32(
|
|
(u8)le32_to_cpu(rq->vrq->scsi.flags));
|
|
|
|
memset(ar->vrq->scsi.cdb, 0,
|
|
sizeof(ar->vrq->scsi.cdb));
|
|
|
|
ar->vrq->scsi.flags |= cpu_to_le32(
|
|
FCP_CMND_TRM);
|
|
ar->vrq->scsi.u.abort_handle =
|
|
rq->vrq->scsi.handle;
|
|
} else {
|
|
/*
|
|
* The request is pending but not active on
|
|
* the firmware. Just free it now and we'll
|
|
* report the successful abort below.
|
|
*/
|
|
list_del_init(&rq->req_list);
|
|
esas2r_free_request(a, rq);
|
|
}
|
|
|
|
found = true;
|
|
break;
|
|
}
|
|
|
|
}
|
|
|
|
if (!found)
|
|
return 1; /* Not found */
|
|
|
|
return 2; /* found */
|
|
|
|
|
|
}
|
|
|
|
int esas2r_eh_abort(struct scsi_cmnd *cmd)
|
|
{
|
|
struct esas2r_adapter *a =
|
|
(struct esas2r_adapter *)cmd->device->host->hostdata;
|
|
struct esas2r_request *abort_request = NULL;
|
|
unsigned long flags;
|
|
struct list_head *queue;
|
|
int result;
|
|
|
|
esas2r_log(ESAS2R_LOG_INFO, "eh_abort (%p)", cmd);
|
|
|
|
if (test_bit(AF_DEGRADED_MODE, &a->flags)) {
|
|
cmd->result = DID_ABORT << 16;
|
|
|
|
scsi_set_resid(cmd, 0);
|
|
|
|
cmd->scsi_done(cmd);
|
|
|
|
return SUCCESS;
|
|
}
|
|
|
|
spin_lock_irqsave(&a->queue_lock, flags);
|
|
|
|
/*
|
|
* Run through the defer and active queues looking for the request
|
|
* to abort.
|
|
*/
|
|
|
|
queue = &a->defer_list;
|
|
|
|
check_active_queue:
|
|
|
|
result = esas2r_check_active_queue(a, &abort_request, cmd, queue);
|
|
|
|
if (!result) {
|
|
spin_unlock_irqrestore(&a->queue_lock, flags);
|
|
return FAILED;
|
|
} else if (result == 2 && (queue == &a->defer_list)) {
|
|
queue = &a->active_list;
|
|
goto check_active_queue;
|
|
}
|
|
|
|
spin_unlock_irqrestore(&a->queue_lock, flags);
|
|
|
|
if (abort_request) {
|
|
u8 task_management_status = RS_PENDING;
|
|
|
|
/*
|
|
* the request is already active, so we need to tell
|
|
* the firmware to abort it and wait for the response.
|
|
*/
|
|
|
|
abort_request->comp_cb = complete_task_management_request;
|
|
abort_request->task_management_status_ptr =
|
|
&task_management_status;
|
|
|
|
esas2r_start_request(a, abort_request);
|
|
|
|
if (atomic_read(&a->disable_cnt) == 0)
|
|
esas2r_do_deferred_processes(a);
|
|
|
|
while (task_management_status == RS_PENDING)
|
|
msleep(10);
|
|
|
|
/*
|
|
* Once we get here, the original request will have been
|
|
* completed by the firmware and the abort request will have
|
|
* been cleaned up. we're done!
|
|
*/
|
|
|
|
return SUCCESS;
|
|
}
|
|
|
|
/*
|
|
* If we get here, either we found the inactive request and
|
|
* freed it, or we didn't find it at all. Either way, success!
|
|
*/
|
|
|
|
cmd->result = DID_ABORT << 16;
|
|
|
|
scsi_set_resid(cmd, 0);
|
|
|
|
cmd->scsi_done(cmd);
|
|
|
|
return SUCCESS;
|
|
}
|
|
|
|
static int esas2r_host_bus_reset(struct scsi_cmnd *cmd, bool host_reset)
|
|
{
|
|
struct esas2r_adapter *a =
|
|
(struct esas2r_adapter *)cmd->device->host->hostdata;
|
|
|
|
if (test_bit(AF_DEGRADED_MODE, &a->flags))
|
|
return FAILED;
|
|
|
|
if (host_reset)
|
|
esas2r_reset_adapter(a);
|
|
else
|
|
esas2r_reset_bus(a);
|
|
|
|
/* above call sets the AF_OS_RESET flag. wait for it to clear. */
|
|
|
|
while (test_bit(AF_OS_RESET, &a->flags)) {
|
|
msleep(10);
|
|
|
|
if (test_bit(AF_DEGRADED_MODE, &a->flags))
|
|
return FAILED;
|
|
}
|
|
|
|
if (test_bit(AF_DEGRADED_MODE, &a->flags))
|
|
return FAILED;
|
|
|
|
return SUCCESS;
|
|
}
|
|
|
|
int esas2r_host_reset(struct scsi_cmnd *cmd)
|
|
{
|
|
esas2r_log(ESAS2R_LOG_INFO, "host_reset (%p)", cmd);
|
|
|
|
return esas2r_host_bus_reset(cmd, true);
|
|
}
|
|
|
|
int esas2r_bus_reset(struct scsi_cmnd *cmd)
|
|
{
|
|
esas2r_log(ESAS2R_LOG_INFO, "bus_reset (%p)", cmd);
|
|
|
|
return esas2r_host_bus_reset(cmd, false);
|
|
}
|
|
|
|
static int esas2r_dev_targ_reset(struct scsi_cmnd *cmd, bool target_reset)
|
|
{
|
|
struct esas2r_adapter *a =
|
|
(struct esas2r_adapter *)cmd->device->host->hostdata;
|
|
struct esas2r_request *rq;
|
|
u8 task_management_status = RS_PENDING;
|
|
bool completed;
|
|
|
|
if (test_bit(AF_DEGRADED_MODE, &a->flags))
|
|
return FAILED;
|
|
|
|
retry:
|
|
rq = esas2r_alloc_request(a);
|
|
if (rq == NULL) {
|
|
if (target_reset) {
|
|
esas2r_log(ESAS2R_LOG_CRIT,
|
|
"unable to allocate a request for a "
|
|
"target reset (%d)!",
|
|
cmd->device->id);
|
|
} else {
|
|
esas2r_log(ESAS2R_LOG_CRIT,
|
|
"unable to allocate a request for a "
|
|
"device reset (%d:%d)!",
|
|
cmd->device->id,
|
|
cmd->device->lun);
|
|
}
|
|
|
|
|
|
return FAILED;
|
|
}
|
|
|
|
rq->target_id = cmd->device->id;
|
|
rq->vrq->scsi.flags |= cpu_to_le32(cmd->device->lun);
|
|
rq->req_stat = RS_PENDING;
|
|
|
|
rq->comp_cb = complete_task_management_request;
|
|
rq->task_management_status_ptr = &task_management_status;
|
|
|
|
if (target_reset) {
|
|
esas2r_debug("issuing target reset (%p) to id %d", rq,
|
|
cmd->device->id);
|
|
completed = esas2r_send_task_mgmt(a, rq, 0x20);
|
|
} else {
|
|
esas2r_debug("issuing device reset (%p) to id %d lun %d", rq,
|
|
cmd->device->id, cmd->device->lun);
|
|
completed = esas2r_send_task_mgmt(a, rq, 0x10);
|
|
}
|
|
|
|
if (completed) {
|
|
/* Task management cmd completed right away, need to free it. */
|
|
|
|
esas2r_free_request(a, rq);
|
|
} else {
|
|
/*
|
|
* Wait for firmware to complete the request. Completion
|
|
* callback will free it.
|
|
*/
|
|
while (task_management_status == RS_PENDING)
|
|
msleep(10);
|
|
}
|
|
|
|
if (test_bit(AF_DEGRADED_MODE, &a->flags))
|
|
return FAILED;
|
|
|
|
if (task_management_status == RS_BUSY) {
|
|
/*
|
|
* Busy, probably because we are flashing. Wait a bit and
|
|
* try again.
|
|
*/
|
|
msleep(100);
|
|
goto retry;
|
|
}
|
|
|
|
return SUCCESS;
|
|
}
|
|
|
|
int esas2r_device_reset(struct scsi_cmnd *cmd)
|
|
{
|
|
esas2r_log(ESAS2R_LOG_INFO, "device_reset (%p)", cmd);
|
|
|
|
return esas2r_dev_targ_reset(cmd, false);
|
|
|
|
}
|
|
|
|
int esas2r_target_reset(struct scsi_cmnd *cmd)
|
|
{
|
|
esas2r_log(ESAS2R_LOG_INFO, "target_reset (%p)", cmd);
|
|
|
|
return esas2r_dev_targ_reset(cmd, true);
|
|
}
|
|
|
|
void esas2r_log_request_failure(struct esas2r_adapter *a,
|
|
struct esas2r_request *rq)
|
|
{
|
|
u8 reqstatus = rq->req_stat;
|
|
|
|
if (reqstatus == RS_SUCCESS)
|
|
return;
|
|
|
|
if (rq->vrq->scsi.function == VDA_FUNC_SCSI) {
|
|
if (reqstatus == RS_SCSI_ERROR) {
|
|
if (rq->func_rsp.scsi_rsp.sense_len >= 13) {
|
|
esas2r_log(ESAS2R_LOG_WARN,
|
|
"request failure - SCSI error %x ASC:%x ASCQ:%x CDB:%x",
|
|
rq->sense_buf[2], rq->sense_buf[12],
|
|
rq->sense_buf[13],
|
|
rq->vrq->scsi.cdb[0]);
|
|
} else {
|
|
esas2r_log(ESAS2R_LOG_WARN,
|
|
"request failure - SCSI error CDB:%x\n",
|
|
rq->vrq->scsi.cdb[0]);
|
|
}
|
|
} else if ((rq->vrq->scsi.cdb[0] != INQUIRY
|
|
&& rq->vrq->scsi.cdb[0] != REPORT_LUNS)
|
|
|| (reqstatus != RS_SEL
|
|
&& reqstatus != RS_SEL2)) {
|
|
if ((reqstatus == RS_UNDERRUN) &&
|
|
(rq->vrq->scsi.cdb[0] == INQUIRY)) {
|
|
/* Don't log inquiry underruns */
|
|
} else {
|
|
esas2r_log(ESAS2R_LOG_WARN,
|
|
"request failure - cdb:%x reqstatus:%d target:%d",
|
|
rq->vrq->scsi.cdb[0], reqstatus,
|
|
rq->target_id);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void esas2r_wait_request(struct esas2r_adapter *a, struct esas2r_request *rq)
|
|
{
|
|
u32 starttime;
|
|
u32 timeout;
|
|
|
|
starttime = jiffies_to_msecs(jiffies);
|
|
timeout = rq->timeout ? rq->timeout : 5000;
|
|
|
|
while (true) {
|
|
esas2r_polled_interrupt(a);
|
|
|
|
if (rq->req_stat != RS_STARTED)
|
|
break;
|
|
|
|
schedule_timeout_interruptible(msecs_to_jiffies(100));
|
|
|
|
if ((jiffies_to_msecs(jiffies) - starttime) > timeout) {
|
|
esas2r_hdebug("request TMO");
|
|
esas2r_bugon();
|
|
|
|
rq->req_stat = RS_TIMEOUT;
|
|
|
|
esas2r_local_reset_adapter(a);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
u32 esas2r_map_data_window(struct esas2r_adapter *a, u32 addr_lo)
|
|
{
|
|
u32 offset = addr_lo & (MW_DATA_WINDOW_SIZE - 1);
|
|
u32 base = addr_lo & -(signed int)MW_DATA_WINDOW_SIZE;
|
|
|
|
if (a->window_base != base) {
|
|
esas2r_write_register_dword(a, MVR_PCI_WIN1_REMAP,
|
|
base | MVRPW1R_ENABLE);
|
|
esas2r_flush_register_dword(a, MVR_PCI_WIN1_REMAP);
|
|
a->window_base = base;
|
|
}
|
|
|
|
return offset;
|
|
}
|
|
|
|
/* Read a block of data from chip memory */
|
|
bool esas2r_read_mem_block(struct esas2r_adapter *a,
|
|
void *to,
|
|
u32 from,
|
|
u32 size)
|
|
{
|
|
u8 *end = (u8 *)to;
|
|
|
|
while (size) {
|
|
u32 len;
|
|
u32 offset;
|
|
u32 iatvr;
|
|
|
|
iatvr = (from & -(signed int)MW_DATA_WINDOW_SIZE);
|
|
|
|
esas2r_map_data_window(a, iatvr);
|
|
|
|
offset = from & (MW_DATA_WINDOW_SIZE - 1);
|
|
len = size;
|
|
|
|
if (len > MW_DATA_WINDOW_SIZE - offset)
|
|
len = MW_DATA_WINDOW_SIZE - offset;
|
|
|
|
from += len;
|
|
size -= len;
|
|
|
|
while (len--) {
|
|
*end++ = esas2r_read_data_byte(a, offset);
|
|
offset++;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
void esas2r_nuxi_mgt_data(u8 function, void *data)
|
|
{
|
|
struct atto_vda_grp_info *g;
|
|
struct atto_vda_devinfo *d;
|
|
struct atto_vdapart_info *p;
|
|
struct atto_vda_dh_info *h;
|
|
struct atto_vda_metrics_info *m;
|
|
struct atto_vda_schedule_info *s;
|
|
struct atto_vda_buzzer_info *b;
|
|
u8 i;
|
|
|
|
switch (function) {
|
|
case VDAMGT_BUZZER_INFO:
|
|
case VDAMGT_BUZZER_SET:
|
|
|
|
b = (struct atto_vda_buzzer_info *)data;
|
|
|
|
b->duration = le32_to_cpu(b->duration);
|
|
break;
|
|
|
|
case VDAMGT_SCHEDULE_INFO:
|
|
case VDAMGT_SCHEDULE_EVENT:
|
|
|
|
s = (struct atto_vda_schedule_info *)data;
|
|
|
|
s->id = le32_to_cpu(s->id);
|
|
|
|
break;
|
|
|
|
case VDAMGT_DEV_INFO:
|
|
case VDAMGT_DEV_CLEAN:
|
|
case VDAMGT_DEV_PT_INFO:
|
|
case VDAMGT_DEV_FEATURES:
|
|
case VDAMGT_DEV_PT_FEATURES:
|
|
case VDAMGT_DEV_OPERATION:
|
|
|
|
d = (struct atto_vda_devinfo *)data;
|
|
|
|
d->capacity = le64_to_cpu(d->capacity);
|
|
d->block_size = le32_to_cpu(d->block_size);
|
|
d->ses_dev_index = le16_to_cpu(d->ses_dev_index);
|
|
d->target_id = le16_to_cpu(d->target_id);
|
|
d->lun = le16_to_cpu(d->lun);
|
|
d->features = le16_to_cpu(d->features);
|
|
break;
|
|
|
|
case VDAMGT_GRP_INFO:
|
|
case VDAMGT_GRP_CREATE:
|
|
case VDAMGT_GRP_DELETE:
|
|
case VDAMGT_ADD_STORAGE:
|
|
case VDAMGT_MEMBER_ADD:
|
|
case VDAMGT_GRP_COMMIT:
|
|
case VDAMGT_GRP_REBUILD:
|
|
case VDAMGT_GRP_COMMIT_INIT:
|
|
case VDAMGT_QUICK_RAID:
|
|
case VDAMGT_GRP_FEATURES:
|
|
case VDAMGT_GRP_COMMIT_INIT_AUTOMAP:
|
|
case VDAMGT_QUICK_RAID_INIT_AUTOMAP:
|
|
case VDAMGT_SPARE_LIST:
|
|
case VDAMGT_SPARE_ADD:
|
|
case VDAMGT_SPARE_REMOVE:
|
|
case VDAMGT_LOCAL_SPARE_ADD:
|
|
case VDAMGT_GRP_OPERATION:
|
|
|
|
g = (struct atto_vda_grp_info *)data;
|
|
|
|
g->capacity = le64_to_cpu(g->capacity);
|
|
g->block_size = le32_to_cpu(g->block_size);
|
|
g->interleave = le32_to_cpu(g->interleave);
|
|
g->features = le16_to_cpu(g->features);
|
|
|
|
for (i = 0; i < 32; i++)
|
|
g->members[i] = le16_to_cpu(g->members[i]);
|
|
|
|
break;
|
|
|
|
case VDAMGT_PART_INFO:
|
|
case VDAMGT_PART_MAP:
|
|
case VDAMGT_PART_UNMAP:
|
|
case VDAMGT_PART_AUTOMAP:
|
|
case VDAMGT_PART_SPLIT:
|
|
case VDAMGT_PART_MERGE:
|
|
|
|
p = (struct atto_vdapart_info *)data;
|
|
|
|
p->part_size = le64_to_cpu(p->part_size);
|
|
p->start_lba = le32_to_cpu(p->start_lba);
|
|
p->block_size = le32_to_cpu(p->block_size);
|
|
p->target_id = le16_to_cpu(p->target_id);
|
|
break;
|
|
|
|
case VDAMGT_DEV_HEALTH_REQ:
|
|
|
|
h = (struct atto_vda_dh_info *)data;
|
|
|
|
h->med_defect_cnt = le32_to_cpu(h->med_defect_cnt);
|
|
h->info_exc_cnt = le32_to_cpu(h->info_exc_cnt);
|
|
break;
|
|
|
|
case VDAMGT_DEV_METRICS:
|
|
|
|
m = (struct atto_vda_metrics_info *)data;
|
|
|
|
for (i = 0; i < 32; i++)
|
|
m->dev_indexes[i] = le16_to_cpu(m->dev_indexes[i]);
|
|
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
void esas2r_nuxi_cfg_data(u8 function, void *data)
|
|
{
|
|
struct atto_vda_cfg_init *ci;
|
|
|
|
switch (function) {
|
|
case VDA_CFG_INIT:
|
|
case VDA_CFG_GET_INIT:
|
|
case VDA_CFG_GET_INIT2:
|
|
|
|
ci = (struct atto_vda_cfg_init *)data;
|
|
|
|
ci->date_time.year = le16_to_cpu(ci->date_time.year);
|
|
ci->sgl_page_size = le32_to_cpu(ci->sgl_page_size);
|
|
ci->vda_version = le32_to_cpu(ci->vda_version);
|
|
ci->epoch_time = le32_to_cpu(ci->epoch_time);
|
|
ci->ioctl_tunnel = le32_to_cpu(ci->ioctl_tunnel);
|
|
ci->num_targets_backend = le32_to_cpu(ci->num_targets_backend);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
void esas2r_nuxi_ae_data(union atto_vda_ae *ae)
|
|
{
|
|
struct atto_vda_ae_raid *r = &ae->raid;
|
|
struct atto_vda_ae_lu *l = &ae->lu;
|
|
|
|
switch (ae->hdr.bytype) {
|
|
case VDAAE_HDR_TYPE_RAID:
|
|
|
|
r->dwflags = le32_to_cpu(r->dwflags);
|
|
break;
|
|
|
|
case VDAAE_HDR_TYPE_LU:
|
|
|
|
l->dwevent = le32_to_cpu(l->dwevent);
|
|
l->wphys_target_id = le16_to_cpu(l->wphys_target_id);
|
|
l->id.tgtlun.wtarget_id = le16_to_cpu(l->id.tgtlun.wtarget_id);
|
|
|
|
if (l->hdr.bylength >= offsetof(struct atto_vda_ae_lu, id)
|
|
+ sizeof(struct atto_vda_ae_lu_tgt_lun_raid)) {
|
|
l->id.tgtlun_raid.dwinterleave
|
|
= le32_to_cpu(l->id.tgtlun_raid.dwinterleave);
|
|
l->id.tgtlun_raid.dwblock_size
|
|
= le32_to_cpu(l->id.tgtlun_raid.dwblock_size);
|
|
}
|
|
|
|
break;
|
|
|
|
case VDAAE_HDR_TYPE_DISK:
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
void esas2r_free_request(struct esas2r_adapter *a, struct esas2r_request *rq)
|
|
{
|
|
unsigned long flags;
|
|
|
|
esas2r_rq_destroy_request(rq, a);
|
|
spin_lock_irqsave(&a->request_lock, flags);
|
|
list_add(&rq->comp_list, &a->avail_request);
|
|
spin_unlock_irqrestore(&a->request_lock, flags);
|
|
}
|
|
|
|
struct esas2r_request *esas2r_alloc_request(struct esas2r_adapter *a)
|
|
{
|
|
struct esas2r_request *rq;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&a->request_lock, flags);
|
|
|
|
if (unlikely(list_empty(&a->avail_request))) {
|
|
spin_unlock_irqrestore(&a->request_lock, flags);
|
|
return NULL;
|
|
}
|
|
|
|
rq = list_first_entry(&a->avail_request, struct esas2r_request,
|
|
comp_list);
|
|
list_del(&rq->comp_list);
|
|
spin_unlock_irqrestore(&a->request_lock, flags);
|
|
esas2r_rq_init_request(rq, a);
|
|
|
|
return rq;
|
|
|
|
}
|
|
|
|
void esas2r_complete_request_cb(struct esas2r_adapter *a,
|
|
struct esas2r_request *rq)
|
|
{
|
|
esas2r_debug("completing request %p\n", rq);
|
|
|
|
scsi_dma_unmap(rq->cmd);
|
|
|
|
if (unlikely(rq->req_stat != RS_SUCCESS)) {
|
|
esas2r_debug("[%x STATUS %x:%x (%x)]", rq->target_id,
|
|
rq->req_stat,
|
|
rq->func_rsp.scsi_rsp.scsi_stat,
|
|
rq->cmd);
|
|
|
|
rq->cmd->result =
|
|
((esas2r_req_status_to_error(rq->req_stat) << 16)
|
|
| (rq->func_rsp.scsi_rsp.scsi_stat & STATUS_MASK));
|
|
|
|
if (rq->req_stat == RS_UNDERRUN)
|
|
scsi_set_resid(rq->cmd,
|
|
le32_to_cpu(rq->func_rsp.scsi_rsp.
|
|
residual_length));
|
|
else
|
|
scsi_set_resid(rq->cmd, 0);
|
|
}
|
|
|
|
rq->cmd->scsi_done(rq->cmd);
|
|
|
|
esas2r_free_request(a, rq);
|
|
}
|
|
|
|
/* Run tasklet to handle stuff outside of interrupt context. */
|
|
void esas2r_adapter_tasklet(unsigned long context)
|
|
{
|
|
struct esas2r_adapter *a = (struct esas2r_adapter *)context;
|
|
|
|
if (unlikely(test_bit(AF2_TIMER_TICK, &a->flags2))) {
|
|
clear_bit(AF2_TIMER_TICK, &a->flags2);
|
|
esas2r_timer_tick(a);
|
|
}
|
|
|
|
if (likely(test_bit(AF2_INT_PENDING, &a->flags2))) {
|
|
clear_bit(AF2_INT_PENDING, &a->flags2);
|
|
esas2r_adapter_interrupt(a);
|
|
}
|
|
|
|
if (esas2r_is_tasklet_pending(a))
|
|
esas2r_do_tasklet_tasks(a);
|
|
|
|
if (esas2r_is_tasklet_pending(a)
|
|
|| (test_bit(AF2_INT_PENDING, &a->flags2))
|
|
|| (test_bit(AF2_TIMER_TICK, &a->flags2))) {
|
|
clear_bit(AF_TASKLET_SCHEDULED, &a->flags);
|
|
esas2r_schedule_tasklet(a);
|
|
} else {
|
|
clear_bit(AF_TASKLET_SCHEDULED, &a->flags);
|
|
}
|
|
}
|
|
|
|
static void esas2r_timer_callback(unsigned long context);
|
|
|
|
void esas2r_kickoff_timer(struct esas2r_adapter *a)
|
|
{
|
|
init_timer(&a->timer);
|
|
|
|
a->timer.function = esas2r_timer_callback;
|
|
a->timer.data = (unsigned long)a;
|
|
a->timer.expires = jiffies +
|
|
msecs_to_jiffies(100);
|
|
|
|
add_timer(&a->timer);
|
|
}
|
|
|
|
static void esas2r_timer_callback(unsigned long context)
|
|
{
|
|
struct esas2r_adapter *a = (struct esas2r_adapter *)context;
|
|
|
|
set_bit(AF2_TIMER_TICK, &a->flags2);
|
|
|
|
esas2r_schedule_tasklet(a);
|
|
|
|
esas2r_kickoff_timer(a);
|
|
}
|
|
|
|
/*
|
|
* Firmware events need to be handled outside of interrupt context
|
|
* so we schedule a delayed_work to handle them.
|
|
*/
|
|
|
|
static void
|
|
esas2r_free_fw_event(struct esas2r_fw_event_work *fw_event)
|
|
{
|
|
unsigned long flags;
|
|
struct esas2r_adapter *a = fw_event->a;
|
|
|
|
spin_lock_irqsave(&a->fw_event_lock, flags);
|
|
list_del(&fw_event->list);
|
|
kfree(fw_event);
|
|
spin_unlock_irqrestore(&a->fw_event_lock, flags);
|
|
}
|
|
|
|
void
|
|
esas2r_fw_event_off(struct esas2r_adapter *a)
|
|
{
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&a->fw_event_lock, flags);
|
|
a->fw_events_off = 1;
|
|
spin_unlock_irqrestore(&a->fw_event_lock, flags);
|
|
}
|
|
|
|
void
|
|
esas2r_fw_event_on(struct esas2r_adapter *a)
|
|
{
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&a->fw_event_lock, flags);
|
|
a->fw_events_off = 0;
|
|
spin_unlock_irqrestore(&a->fw_event_lock, flags);
|
|
}
|
|
|
|
static void esas2r_add_device(struct esas2r_adapter *a, u16 target_id)
|
|
{
|
|
int ret;
|
|
struct scsi_device *scsi_dev;
|
|
|
|
scsi_dev = scsi_device_lookup(a->host, 0, target_id, 0);
|
|
|
|
if (scsi_dev) {
|
|
esas2r_log_dev(
|
|
ESAS2R_LOG_WARN,
|
|
&(scsi_dev->
|
|
sdev_gendev),
|
|
"scsi device already exists at id %d", target_id);
|
|
|
|
scsi_device_put(scsi_dev);
|
|
} else {
|
|
esas2r_log_dev(
|
|
ESAS2R_LOG_INFO,
|
|
&(a->host->
|
|
shost_gendev),
|
|
"scsi_add_device() called for 0:%d:0",
|
|
target_id);
|
|
|
|
ret = scsi_add_device(a->host, 0, target_id, 0);
|
|
if (ret) {
|
|
esas2r_log_dev(
|
|
ESAS2R_LOG_CRIT,
|
|
&(a->host->
|
|
shost_gendev),
|
|
"scsi_add_device failed with %d for id %d",
|
|
ret, target_id);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void esas2r_remove_device(struct esas2r_adapter *a, u16 target_id)
|
|
{
|
|
struct scsi_device *scsi_dev;
|
|
|
|
scsi_dev = scsi_device_lookup(a->host, 0, target_id, 0);
|
|
|
|
if (scsi_dev) {
|
|
scsi_device_set_state(scsi_dev, SDEV_OFFLINE);
|
|
|
|
esas2r_log_dev(
|
|
ESAS2R_LOG_INFO,
|
|
&(scsi_dev->
|
|
sdev_gendev),
|
|
"scsi_remove_device() called for 0:%d:0",
|
|
target_id);
|
|
|
|
scsi_remove_device(scsi_dev);
|
|
|
|
esas2r_log_dev(
|
|
ESAS2R_LOG_INFO,
|
|
&(scsi_dev->
|
|
sdev_gendev),
|
|
"scsi_device_put() called");
|
|
|
|
scsi_device_put(scsi_dev);
|
|
} else {
|
|
esas2r_log_dev(
|
|
ESAS2R_LOG_WARN,
|
|
&(a->host->shost_gendev),
|
|
"no target found at id %d",
|
|
target_id);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Sends a firmware asynchronous event to anyone who happens to be
|
|
* listening on the defined ATTO VDA event ports.
|
|
*/
|
|
static void esas2r_send_ae_event(struct esas2r_fw_event_work *fw_event)
|
|
{
|
|
struct esas2r_vda_ae *ae = (struct esas2r_vda_ae *)fw_event->data;
|
|
char *type;
|
|
|
|
switch (ae->vda_ae.hdr.bytype) {
|
|
case VDAAE_HDR_TYPE_RAID:
|
|
type = "RAID group state change";
|
|
break;
|
|
|
|
case VDAAE_HDR_TYPE_LU:
|
|
type = "Mapped destination LU change";
|
|
break;
|
|
|
|
case VDAAE_HDR_TYPE_DISK:
|
|
type = "Physical disk inventory change";
|
|
break;
|
|
|
|
case VDAAE_HDR_TYPE_RESET:
|
|
type = "Firmware reset";
|
|
break;
|
|
|
|
case VDAAE_HDR_TYPE_LOG_INFO:
|
|
type = "Event Log message (INFO level)";
|
|
break;
|
|
|
|
case VDAAE_HDR_TYPE_LOG_WARN:
|
|
type = "Event Log message (WARN level)";
|
|
break;
|
|
|
|
case VDAAE_HDR_TYPE_LOG_CRIT:
|
|
type = "Event Log message (CRIT level)";
|
|
break;
|
|
|
|
case VDAAE_HDR_TYPE_LOG_FAIL:
|
|
type = "Event Log message (FAIL level)";
|
|
break;
|
|
|
|
case VDAAE_HDR_TYPE_NVC:
|
|
type = "NVCache change";
|
|
break;
|
|
|
|
case VDAAE_HDR_TYPE_TLG_INFO:
|
|
type = "Time stamped log message (INFO level)";
|
|
break;
|
|
|
|
case VDAAE_HDR_TYPE_TLG_WARN:
|
|
type = "Time stamped log message (WARN level)";
|
|
break;
|
|
|
|
case VDAAE_HDR_TYPE_TLG_CRIT:
|
|
type = "Time stamped log message (CRIT level)";
|
|
break;
|
|
|
|
case VDAAE_HDR_TYPE_PWRMGT:
|
|
type = "Power management";
|
|
break;
|
|
|
|
case VDAAE_HDR_TYPE_MUTE:
|
|
type = "Mute button pressed";
|
|
break;
|
|
|
|
case VDAAE_HDR_TYPE_DEV:
|
|
type = "Device attribute change";
|
|
break;
|
|
|
|
default:
|
|
type = "Unknown";
|
|
break;
|
|
}
|
|
|
|
esas2r_log(ESAS2R_LOG_WARN,
|
|
"An async event of type \"%s\" was received from the firmware. The event contents are:",
|
|
type);
|
|
esas2r_log_hexdump(ESAS2R_LOG_WARN, &ae->vda_ae,
|
|
ae->vda_ae.hdr.bylength);
|
|
|
|
}
|
|
|
|
static void
|
|
esas2r_firmware_event_work(struct work_struct *work)
|
|
{
|
|
struct esas2r_fw_event_work *fw_event =
|
|
container_of(work, struct esas2r_fw_event_work, work.work);
|
|
|
|
struct esas2r_adapter *a = fw_event->a;
|
|
|
|
u16 target_id = *(u16 *)&fw_event->data[0];
|
|
|
|
if (a->fw_events_off)
|
|
goto done;
|
|
|
|
switch (fw_event->type) {
|
|
case fw_event_null:
|
|
break; /* do nothing */
|
|
|
|
case fw_event_lun_change:
|
|
esas2r_remove_device(a, target_id);
|
|
esas2r_add_device(a, target_id);
|
|
break;
|
|
|
|
case fw_event_present:
|
|
esas2r_add_device(a, target_id);
|
|
break;
|
|
|
|
case fw_event_not_present:
|
|
esas2r_remove_device(a, target_id);
|
|
break;
|
|
|
|
case fw_event_vda_ae:
|
|
esas2r_send_ae_event(fw_event);
|
|
break;
|
|
}
|
|
|
|
done:
|
|
esas2r_free_fw_event(fw_event);
|
|
}
|
|
|
|
void esas2r_queue_fw_event(struct esas2r_adapter *a,
|
|
enum fw_event_type type,
|
|
void *data,
|
|
int data_sz)
|
|
{
|
|
struct esas2r_fw_event_work *fw_event;
|
|
unsigned long flags;
|
|
|
|
fw_event = kzalloc(sizeof(struct esas2r_fw_event_work), GFP_ATOMIC);
|
|
if (!fw_event) {
|
|
esas2r_log(ESAS2R_LOG_WARN,
|
|
"esas2r_queue_fw_event failed to alloc");
|
|
return;
|
|
}
|
|
|
|
if (type == fw_event_vda_ae) {
|
|
struct esas2r_vda_ae *ae =
|
|
(struct esas2r_vda_ae *)fw_event->data;
|
|
|
|
ae->signature = ESAS2R_VDA_EVENT_SIG;
|
|
ae->bus_number = a->pcid->bus->number;
|
|
ae->devfn = a->pcid->devfn;
|
|
memcpy(&ae->vda_ae, data, sizeof(ae->vda_ae));
|
|
} else {
|
|
memcpy(fw_event->data, data, data_sz);
|
|
}
|
|
|
|
fw_event->type = type;
|
|
fw_event->a = a;
|
|
|
|
spin_lock_irqsave(&a->fw_event_lock, flags);
|
|
list_add_tail(&fw_event->list, &a->fw_event_list);
|
|
INIT_DELAYED_WORK(&fw_event->work, esas2r_firmware_event_work);
|
|
queue_delayed_work_on(
|
|
smp_processor_id(), a->fw_event_q, &fw_event->work,
|
|
msecs_to_jiffies(1));
|
|
spin_unlock_irqrestore(&a->fw_event_lock, flags);
|
|
}
|
|
|
|
void esas2r_target_state_changed(struct esas2r_adapter *a, u16 targ_id,
|
|
u8 state)
|
|
{
|
|
if (state == TS_LUN_CHANGE)
|
|
esas2r_queue_fw_event(a, fw_event_lun_change, &targ_id,
|
|
sizeof(targ_id));
|
|
else if (state == TS_PRESENT)
|
|
esas2r_queue_fw_event(a, fw_event_present, &targ_id,
|
|
sizeof(targ_id));
|
|
else if (state == TS_NOT_PRESENT)
|
|
esas2r_queue_fw_event(a, fw_event_not_present, &targ_id,
|
|
sizeof(targ_id));
|
|
}
|
|
|
|
/* Translate status to a Linux SCSI mid-layer error code */
|
|
int esas2r_req_status_to_error(u8 req_stat)
|
|
{
|
|
switch (req_stat) {
|
|
case RS_OVERRUN:
|
|
case RS_UNDERRUN:
|
|
case RS_SUCCESS:
|
|
/*
|
|
* NOTE: SCSI mid-layer wants a good status for a SCSI error, because
|
|
* it will check the scsi_stat value in the completion anyway.
|
|
*/
|
|
case RS_SCSI_ERROR:
|
|
return DID_OK;
|
|
|
|
case RS_SEL:
|
|
case RS_SEL2:
|
|
return DID_NO_CONNECT;
|
|
|
|
case RS_RESET:
|
|
return DID_RESET;
|
|
|
|
case RS_ABORTED:
|
|
return DID_ABORT;
|
|
|
|
case RS_BUSY:
|
|
return DID_BUS_BUSY;
|
|
}
|
|
|
|
/* everything else is just an error. */
|
|
|
|
return DID_ERROR;
|
|
}
|
|
|
|
module_init(esas2r_init);
|
|
module_exit(esas2r_exit);
|