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[SCSI] mptfusion: mptspi Adding Stub Driver - SCSI Parallel
(1) mptspi.c: This driver is having module_init, module_exit, and probe. (2) mptspi.c: Registering for SCSI pci ids are done from this module. (3) mptspi.c: Convert MODULE_PARM to module_param Signed-off-by: Eric Moore <Eric.Moore@lsil.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
Moore, Eric Dean
James Bottomley
parent
0d0c79747e
commit
243eabcf6b
487
drivers/message/fusion/mptspi.c
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487
drivers/message/fusion/mptspi.c
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@ -0,0 +1,487 @@
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/*
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* linux/drivers/message/fusion/mptspi.c
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* For use with LSI Logic PCI chip/adapter(s)
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* running LSI Logic Fusion MPT (Message Passing Technology) firmware.
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*
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* Copyright (c) 1999-2005 LSI Logic Corporation
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* (mailto:mpt_linux_developer@lsil.com)
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*
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*/
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/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
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/*
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License 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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*/
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/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
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#include "linux_compat.h" /* linux-2.6 tweaks */
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/kdev_t.h>
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#include <linux/blkdev.h>
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#include <linux/delay.h> /* for mdelay */
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#include <linux/interrupt.h> /* needed for in_interrupt() proto */
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#include <linux/reboot.h> /* notifier code */
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#include <linux/sched.h>
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#include <linux/workqueue.h>
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#include <scsi/scsi.h>
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#include <scsi/scsi_cmnd.h>
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#include <scsi/scsi_device.h>
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#include <scsi/scsi_host.h>
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#include <scsi/scsi_tcq.h>
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#include "mptbase.h"
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#include "mptscsih.h"
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/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
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#define my_NAME "Fusion MPT SPI Host driver"
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#define my_VERSION MPT_LINUX_VERSION_COMMON
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#define MYNAM "mptspi"
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MODULE_AUTHOR(MODULEAUTHOR);
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MODULE_DESCRIPTION(my_NAME);
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MODULE_LICENSE("GPL");
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/* Command line args */
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#ifdef MPTSCSIH_ENABLE_DOMAIN_VALIDATION
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static int mpt_dv = MPTSCSIH_DOMAIN_VALIDATION;
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module_param(mpt_dv, int, 0);
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MODULE_PARM_DESC(mpt_dv, " DV Algorithm: enhanced=1, basic=0 (default=MPTSCSIH_DOMAIN_VALIDATION=1)");
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static int mpt_width = MPTSCSIH_MAX_WIDTH;
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module_param(mpt_width, int, 0);
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MODULE_PARM_DESC(mpt_width, " Max Bus Width: wide=1, narrow=0 (default=MPTSCSIH_MAX_WIDTH=1)");
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static ushort mpt_factor = MPTSCSIH_MIN_SYNC;
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module_param(mpt_factor, ushort, 0);
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MODULE_PARM_DESC(mpt_factor, " Min Sync Factor (default=MPTSCSIH_MIN_SYNC=0x08)");
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#endif
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static int mpt_saf_te = MPTSCSIH_SAF_TE;
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module_param(mpt_saf_te, int, 0);
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MODULE_PARM_DESC(mpt_saf_te, " Force enabling SEP Processor: enable=1 (default=MPTSCSIH_SAF_TE=0)");
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static int mpt_pq_filter = 0;
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module_param(mpt_pq_filter, int, 0);
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MODULE_PARM_DESC(mpt_pq_filter, " Enable peripheral qualifier filter: enable=1 (default=0)");
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static int mptspiDoneCtx = -1;
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static int mptspiTaskCtx = -1;
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static int mptspiInternalCtx = -1; /* Used only for internal commands */
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static struct device_attribute mptspi_queue_depth_attr = {
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.attr = {
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.name = "queue_depth",
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.mode = S_IWUSR,
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},
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.store = mptscsih_store_queue_depth,
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};
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static struct device_attribute *mptspi_dev_attrs[] = {
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&mptspi_queue_depth_attr,
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NULL,
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};
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static struct scsi_host_template mptspi_driver_template = {
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.proc_name = "mptspi",
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.proc_info = mptscsih_proc_info,
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.name = "MPT SPI Host",
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.info = mptscsih_info,
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.queuecommand = mptscsih_qcmd,
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.slave_alloc = mptscsih_slave_alloc,
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.slave_configure = mptscsih_slave_configure,
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.slave_destroy = mptscsih_slave_destroy,
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.eh_abort_handler = mptscsih_abort,
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.eh_device_reset_handler = mptscsih_dev_reset,
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.eh_bus_reset_handler = mptscsih_bus_reset,
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.eh_host_reset_handler = mptscsih_host_reset,
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.bios_param = mptscsih_bios_param,
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.can_queue = MPT_SCSI_CAN_QUEUE,
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.this_id = -1,
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.sg_tablesize = MPT_SCSI_SG_DEPTH,
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.max_sectors = 8192,
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.cmd_per_lun = 7,
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.use_clustering = ENABLE_CLUSTERING,
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.sdev_attrs = mptspi_dev_attrs,
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};
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/****************************************************************************
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* Supported hardware
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*/
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static struct pci_device_id mptspi_pci_table[] = {
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{ PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C1030,
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PCI_ANY_ID, PCI_ANY_ID },
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{ PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_1030_53C1035,
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PCI_ANY_ID, PCI_ANY_ID },
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{0} /* Terminating entry */
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};
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MODULE_DEVICE_TABLE(pci, mptspi_pci_table);
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/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
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/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
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/*
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* mptspi_probe - Installs scsi devices per bus.
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* @pdev: Pointer to pci_dev structure
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*
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* Returns 0 for success, non-zero for failure.
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*
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*/
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static int
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mptspi_probe(struct pci_dev *pdev, const struct pci_device_id *id)
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{
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struct Scsi_Host *sh;
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MPT_SCSI_HOST *hd;
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MPT_ADAPTER *ioc;
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unsigned long flags;
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int sz, ii;
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int numSGE = 0;
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int scale;
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int ioc_cap;
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u8 *mem;
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int error=0;
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int r;
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if ((r = mpt_attach(pdev,id)) != 0)
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return r;
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ioc = pci_get_drvdata(pdev);
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/* Added sanity check on readiness of the MPT adapter.
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*/
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if (ioc->last_state != MPI_IOC_STATE_OPERATIONAL) {
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printk(MYIOC_s_WARN_FMT
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"Skipping because it's not operational!\n",
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ioc->name);
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return -ENODEV;
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}
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if (!ioc->active) {
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printk(MYIOC_s_WARN_FMT "Skipping because it's disabled!\n",
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ioc->name);
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return -ENODEV;
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}
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/* Sanity check - ensure at least 1 port is INITIATOR capable
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*/
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ioc_cap = 0;
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for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) {
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if (ioc->pfacts[ii].ProtocolFlags &
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MPI_PORTFACTS_PROTOCOL_INITIATOR)
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ioc_cap ++;
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}
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if (!ioc_cap) {
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printk(MYIOC_s_WARN_FMT
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"Skipping ioc=%p because SCSI Initiator mode is NOT enabled!\n",
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ioc->name, ioc);
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return -ENODEV;
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}
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sh = scsi_host_alloc(&mptspi_driver_template, sizeof(MPT_SCSI_HOST));
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if (!sh) {
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printk(MYIOC_s_WARN_FMT
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"Unable to register controller with SCSI subsystem\n",
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ioc->name);
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return -1;
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}
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spin_lock_irqsave(&ioc->FreeQlock, flags);
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/* Attach the SCSI Host to the IOC structure
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*/
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ioc->sh = sh;
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sh->io_port = 0;
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sh->n_io_port = 0;
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sh->irq = 0;
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/* set 16 byte cdb's */
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sh->max_cmd_len = 16;
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/* Yikes! This is important!
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* Otherwise, by default, linux
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* only scans target IDs 0-7!
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* pfactsN->MaxDevices unreliable
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* (not supported in early
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* versions of the FW).
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* max_id = 1 + actual max id,
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* max_lun = 1 + actual last lun,
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* see hosts.h :o(
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*/
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sh->max_id = MPT_MAX_SCSI_DEVICES;
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sh->max_lun = MPT_LAST_LUN + 1;
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sh->max_channel = 0;
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sh->this_id = ioc->pfacts[0].PortSCSIID;
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/* Required entry.
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*/
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sh->unique_id = ioc->id;
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/* Verify that we won't exceed the maximum
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* number of chain buffers
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* We can optimize: ZZ = req_sz/sizeof(SGE)
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* For 32bit SGE's:
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* numSGE = 1 + (ZZ-1)*(maxChain -1) + ZZ
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* + (req_sz - 64)/sizeof(SGE)
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* A slightly different algorithm is required for
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* 64bit SGEs.
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*/
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scale = ioc->req_sz/(sizeof(dma_addr_t) + sizeof(u32));
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if (sizeof(dma_addr_t) == sizeof(u64)) {
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numSGE = (scale - 1) *
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(ioc->facts.MaxChainDepth-1) + scale +
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(ioc->req_sz - 60) / (sizeof(dma_addr_t) +
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sizeof(u32));
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} else {
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numSGE = 1 + (scale - 1) *
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(ioc->facts.MaxChainDepth-1) + scale +
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(ioc->req_sz - 64) / (sizeof(dma_addr_t) +
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sizeof(u32));
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}
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if (numSGE < sh->sg_tablesize) {
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/* Reset this value */
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dprintk((MYIOC_s_INFO_FMT
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"Resetting sg_tablesize to %d from %d\n",
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ioc->name, numSGE, sh->sg_tablesize));
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sh->sg_tablesize = numSGE;
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}
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/* Set the pci device pointer in Scsi_Host structure.
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*/
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scsi_set_device(sh, &ioc->pcidev->dev);
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spin_unlock_irqrestore(&ioc->FreeQlock, flags);
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hd = (MPT_SCSI_HOST *) sh->hostdata;
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hd->ioc = ioc;
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/* SCSI needs scsi_cmnd lookup table!
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* (with size equal to req_depth*PtrSz!)
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*/
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sz = ioc->req_depth * sizeof(void *);
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mem = kmalloc(sz, GFP_ATOMIC);
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if (mem == NULL) {
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error = -ENOMEM;
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goto mptspi_probe_failed;
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}
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memset(mem, 0, sz);
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hd->ScsiLookup = (struct scsi_cmnd **) mem;
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dprintk((MYIOC_s_INFO_FMT "ScsiLookup @ %p, sz=%d\n",
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ioc->name, hd->ScsiLookup, sz));
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/* Allocate memory for the device structures.
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* A non-Null pointer at an offset
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* indicates a device exists.
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* max_id = 1 + maximum id (hosts.h)
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*/
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sz = sh->max_id * sizeof(void *);
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mem = kmalloc(sz, GFP_ATOMIC);
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if (mem == NULL) {
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error = -ENOMEM;
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goto mptspi_probe_failed;
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}
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memset(mem, 0, sz);
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hd->Targets = (VirtDevice **) mem;
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dprintk((KERN_INFO
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" Targets @ %p, sz=%d\n", hd->Targets, sz));
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/* Clear the TM flags
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*/
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hd->tmPending = 0;
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hd->tmState = TM_STATE_NONE;
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hd->resetPending = 0;
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hd->abortSCpnt = NULL;
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/* Clear the pointer used to store
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* single-threaded commands, i.e., those
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* issued during a bus scan, dv and
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* configuration pages.
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*/
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hd->cmdPtr = NULL;
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/* Initialize this SCSI Hosts' timers
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* To use, set the timer expires field
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* and add_timer
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*/
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init_timer(&hd->timer);
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hd->timer.data = (unsigned long) hd;
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hd->timer.function = mptscsih_timer_expired;
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ioc->spi_data.Saf_Te = mpt_saf_te;
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hd->mpt_pq_filter = mpt_pq_filter;
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#ifdef MPTSCSIH_ENABLE_DOMAIN_VALIDATION
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if (ioc->spi_data.maxBusWidth > mpt_width)
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ioc->spi_data.maxBusWidth = mpt_width;
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if (ioc->spi_data.minSyncFactor < mpt_factor)
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ioc->spi_data.minSyncFactor = mpt_factor;
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if (ioc->spi_data.minSyncFactor == MPT_ASYNC) {
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ioc->spi_data.maxSyncOffset = 0;
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}
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ioc->spi_data.mpt_dv = mpt_dv;
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hd->negoNvram = 0;
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ddvprintk((MYIOC_s_INFO_FMT
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"dv %x width %x factor %x saf_te %x mpt_pq_filter %x\n",
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ioc->name,
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mpt_dv,
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mpt_width,
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mpt_factor,
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mpt_saf_te,
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mpt_pq_filter));
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#else
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hd->negoNvram = MPT_SCSICFG_USE_NVRAM;
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ddvprintk((MYIOC_s_INFO_FMT
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"saf_te %x mpt_pq_filter %x\n",
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ioc->name,
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mpt_saf_te,
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mpt_pq_filter));
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#endif
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ioc->spi_data.forceDv = 0;
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ioc->spi_data.noQas = 0;
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for (ii=0; ii < MPT_MAX_SCSI_DEVICES; ii++)
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ioc->spi_data.dvStatus[ii] =
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MPT_SCSICFG_NEGOTIATE;
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|
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for (ii=0; ii < MPT_MAX_SCSI_DEVICES; ii++)
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ioc->spi_data.dvStatus[ii] |=
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MPT_SCSICFG_DV_NOT_DONE;
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init_waitqueue_head(&hd->scandv_waitq);
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hd->scandv_wait_done = 0;
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hd->last_queue_full = 0;
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ioc->DoneCtx = mptspiDoneCtx;
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ioc->TaskCtx = mptspiTaskCtx;
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ioc->InternalCtx = mptspiInternalCtx;
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error = scsi_add_host (sh, &ioc->pcidev->dev);
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if(error) {
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dprintk((KERN_ERR MYNAM
|
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"scsi_add_host failed\n"));
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goto mptspi_probe_failed;
|
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}
|
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scsi_scan_host(sh);
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return 0;
|
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|
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mptspi_probe_failed:
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mptscsih_remove(pdev);
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return error;
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}
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static struct pci_driver mptspi_driver = {
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.name = "mptspi",
|
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.id_table = mptspi_pci_table,
|
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.probe = mptspi_probe,
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.remove = __devexit_p(mptscsih_remove),
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.driver = {
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.shutdown = mptscsih_shutdown,
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},
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#ifdef CONFIG_PM
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.suspend = mptscsih_suspend,
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.resume = mptscsih_resume,
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#endif
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};
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|
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/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
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/**
|
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* mptspi_init - Register MPT adapter(s) as SCSI host(s) with
|
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* linux scsi mid-layer.
|
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*
|
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* Returns 0 for success, non-zero for failure.
|
||||
*/
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static int __init
|
||||
mptspi_init(void)
|
||||
{
|
||||
|
||||
show_mptmod_ver(my_NAME, my_VERSION);
|
||||
|
||||
mptspiDoneCtx = mpt_register(mptscsih_io_done, MPTSPI_DRIVER);
|
||||
mptspiTaskCtx = mpt_register(mptscsih_taskmgmt_complete, MPTSPI_DRIVER);
|
||||
mptspiInternalCtx = mpt_register(mptscsih_scandv_complete, MPTSPI_DRIVER);
|
||||
|
||||
if (mpt_event_register(mptspiDoneCtx, mptscsih_event_process) == 0) {
|
||||
devtprintk((KERN_INFO MYNAM
|
||||
": Registered for IOC event notifications\n"));
|
||||
}
|
||||
|
||||
if (mpt_reset_register(mptspiDoneCtx, mptscsih_ioc_reset) == 0) {
|
||||
dprintk((KERN_INFO MYNAM
|
||||
": Registered for IOC reset notifications\n"));
|
||||
}
|
||||
|
||||
return pci_register_driver(&mptspi_driver);
|
||||
}
|
||||
|
||||
/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
|
||||
/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
|
||||
/**
|
||||
* mptspi_exit - Unregisters MPT adapter(s)
|
||||
*
|
||||
*/
|
||||
static void __exit
|
||||
mptspi_exit(void)
|
||||
{
|
||||
pci_unregister_driver(&mptspi_driver);
|
||||
|
||||
mpt_reset_deregister(mptspiDoneCtx);
|
||||
dprintk((KERN_INFO MYNAM
|
||||
": Deregistered for IOC reset notifications\n"));
|
||||
|
||||
mpt_event_deregister(mptspiDoneCtx);
|
||||
dprintk((KERN_INFO MYNAM
|
||||
": Deregistered for IOC event notifications\n"));
|
||||
|
||||
mpt_deregister(mptspiInternalCtx);
|
||||
mpt_deregister(mptspiTaskCtx);
|
||||
mpt_deregister(mptspiDoneCtx);
|
||||
}
|
||||
|
||||
module_init(mptspi_init);
|
||||
module_exit(mptspi_exit);
|
||||
Loading…
Reference in New Issue
Block a user