[deliverable/linux.git] / drivers / message / fusion / mptspi.c

/*
 *  linux/drivers/message/fusion/mptspi.c
 *      For use with LSI Logic PCI chip/adapter(s)
 *      running LSI Logic Fusion MPT (Message Passing Technology) firmware.
 *
 *  Copyright (c) 1999-2005 LSI Logic Corporation
 *  (mailto:mpt_linux_developer@lsil.com)
 *
 */
/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
/*
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; version 2 of the License.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    NO WARRANTY
    THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
    CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
    LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
    MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
    solely responsible for determining the appropriateness of using and
    distributing the Program and assumes all risks associated with its
    exercise of rights under this Agreement, including but not limited to
    the risks and costs of program errors, damage to or loss of data,
    programs or equipment, and unavailability or interruption of operations.

    DISCLAIMER OF LIABILITY
    NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
    DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
    DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
    ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
    TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
    USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
    HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/
/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/

#include "linux_compat.h"	/* linux-2.6 tweaks */
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/errno.h>
#include <linux/kdev_t.h>
#include <linux/blkdev.h>
#include <linux/delay.h>	/* for mdelay */
#include <linux/interrupt.h>	/* needed for in_interrupt() proto */
#include <linux/reboot.h>	/* notifier code */
#include <linux/sched.h>
#include <linux/workqueue.h>

#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_tcq.h>

#include "mptbase.h"
#include "mptscsih.h"

/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
#define my_NAME		"Fusion MPT SPI Host driver"
#define my_VERSION	MPT_LINUX_VERSION_COMMON
#define MYNAM		"mptspi"

MODULE_AUTHOR(MODULEAUTHOR);
MODULE_DESCRIPTION(my_NAME);
MODULE_LICENSE("GPL");

/* Command line args */
#ifdef MPTSCSIH_ENABLE_DOMAIN_VALIDATION
static int mpt_dv = MPTSCSIH_DOMAIN_VALIDATION;
module_param(mpt_dv, int, 0);
MODULE_PARM_DESC(mpt_dv, " DV Algorithm: enhanced=1, basic=0 (default=MPTSCSIH_DOMAIN_VALIDATION=1)");

static int mpt_width = MPTSCSIH_MAX_WIDTH;
module_param(mpt_width, int, 0);
MODULE_PARM_DESC(mpt_width, " Max Bus Width: wide=1, narrow=0 (default=MPTSCSIH_MAX_WIDTH=1)");

static ushort mpt_factor = MPTSCSIH_MIN_SYNC;
module_param(mpt_factor, ushort, 0);
MODULE_PARM_DESC(mpt_factor, " Min Sync Factor (default=MPTSCSIH_MIN_SYNC=0x08)");
#endif

static int mpt_saf_te = MPTSCSIH_SAF_TE;
module_param(mpt_saf_te, int, 0);
MODULE_PARM_DESC(mpt_saf_te, " Force enabling SEP Processor: enable=1  (default=MPTSCSIH_SAF_TE=0)");

static int mpt_pq_filter = 0;
module_param(mpt_pq_filter, int, 0);
MODULE_PARM_DESC(mpt_pq_filter, " Enable peripheral qualifier filter: enable=1  (default=0)");

static int	mptspiDoneCtx = -1;
static int	mptspiTaskCtx = -1;
static int	mptspiInternalCtx = -1; /* Used only for internal commands */

static struct scsi_host_template mptspi_driver_template = {
	.module				= THIS_MODULE,
	.proc_name			= "mptspi",
	.proc_info			= mptscsih_proc_info,
	.name				= "MPT SPI Host",
	.info				= mptscsih_info,
	.queuecommand			= mptscsih_qcmd,
	.slave_alloc			= mptscsih_slave_alloc,
	.slave_configure		= mptscsih_slave_configure,
	.slave_destroy			= mptscsih_slave_destroy,
	.change_queue_depth 		= mptscsih_change_queue_depth,
	.eh_abort_handler		= mptscsih_abort,
	.eh_device_reset_handler	= mptscsih_dev_reset,
	.eh_bus_reset_handler		= mptscsih_bus_reset,
	.eh_host_reset_handler		= mptscsih_host_reset,
	.bios_param			= mptscsih_bios_param,
	.can_queue			= MPT_SCSI_CAN_QUEUE,
	.this_id			= -1,
	.sg_tablesize			= MPT_SCSI_SG_DEPTH,
	.max_sectors			= 8192,
	.cmd_per_lun			= 7,
	.use_clustering			= ENABLE_CLUSTERING,
};


/****************************************************************************
 * Supported hardware
 */

static struct pci_device_id mptspi_pci_table[] = {
	{ PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C1030,
		PCI_ANY_ID, PCI_ANY_ID },
	{ PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_1030_53C1035,
		PCI_ANY_ID, PCI_ANY_ID },
	{0}	/* Terminating entry */
};
MODULE_DEVICE_TABLE(pci, mptspi_pci_table);

/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
/*
 *	mptspi_probe - Installs scsi devices per bus.
 *	@pdev: Pointer to pci_dev structure
 *
 *	Returns 0 for success, non-zero for failure.
 *
 */
static int
mptspi_probe(struct pci_dev *pdev, const struct pci_device_id *id)
{
	struct Scsi_Host	*sh;
	MPT_SCSI_HOST		*hd;
	MPT_ADAPTER 		*ioc;
	unsigned long		 flags;
	int			 sz, ii;
	int			 numSGE = 0;
	int			 scale;
	int			 ioc_cap;
	u8			*mem;
	int			error=0;
	int			r;

	if ((r = mpt_attach(pdev,id)) != 0)
		return r;

	ioc = pci_get_drvdata(pdev);
	ioc->DoneCtx = mptspiDoneCtx;
	ioc->TaskCtx = mptspiTaskCtx;
	ioc->InternalCtx = mptspiInternalCtx;

	/*  Added sanity check on readiness of the MPT adapter.
	 */
	if (ioc->last_state != MPI_IOC_STATE_OPERATIONAL) {
		printk(MYIOC_s_WARN_FMT
		  "Skipping because it's not operational!\n",
		  ioc->name);
		return -ENODEV;
	}

	if (!ioc->active) {
		printk(MYIOC_s_WARN_FMT "Skipping because it's disabled!\n",
		  ioc->name);
		return -ENODEV;
	}

	/*  Sanity check - ensure at least 1 port is INITIATOR capable
	 */
	ioc_cap = 0;
	for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) {
		if (ioc->pfacts[ii].ProtocolFlags &
		    MPI_PORTFACTS_PROTOCOL_INITIATOR)
			ioc_cap ++;
	}

	if (!ioc_cap) {
		printk(MYIOC_s_WARN_FMT
			"Skipping ioc=%p because SCSI Initiator mode is NOT enabled!\n",
			ioc->name, ioc);
		return 0;
	}

	sh = scsi_host_alloc(&mptspi_driver_template, sizeof(MPT_SCSI_HOST));

	if (!sh) {
		printk(MYIOC_s_WARN_FMT
			"Unable to register controller with SCSI subsystem\n",
			ioc->name);
                return -1;
        }

	spin_lock_irqsave(&ioc->FreeQlock, flags);

	/* Attach the SCSI Host to the IOC structure
	 */
	ioc->sh = sh;

	sh->io_port = 0;
	sh->n_io_port = 0;
	sh->irq = 0;

	/* set 16 byte cdb's */
	sh->max_cmd_len = 16;

	/* Yikes!  This is important!
	 * Otherwise, by default, linux
	 * only scans target IDs 0-7!
	 * pfactsN->MaxDevices unreliable
	 * (not supported in early
	 *	versions of the FW).
	 * max_id = 1 + actual max id,
	 * max_lun = 1 + actual last lun,
	 *	see hosts.h :o(
	 */
	sh->max_id = MPT_MAX_SCSI_DEVICES;

	sh->max_lun = MPT_LAST_LUN + 1;
	sh->max_channel = 0;
	sh->this_id = ioc->pfacts[0].PortSCSIID;

	/* Required entry.
	 */
	sh->unique_id = ioc->id;

	/* Verify that we won't exceed the maximum
	 * number of chain buffers
	 * We can optimize:  ZZ = req_sz/sizeof(SGE)
	 * For 32bit SGE's:
	 *  numSGE = 1 + (ZZ-1)*(maxChain -1) + ZZ
	 *               + (req_sz - 64)/sizeof(SGE)
	 * A slightly different algorithm is required for
	 * 64bit SGEs.
	 */
	scale = ioc->req_sz/(sizeof(dma_addr_t) + sizeof(u32));
	if (sizeof(dma_addr_t) == sizeof(u64)) {
		numSGE = (scale - 1) *
		  (ioc->facts.MaxChainDepth-1) + scale +
		  (ioc->req_sz - 60) / (sizeof(dma_addr_t) +
		  sizeof(u32));
	} else {
		numSGE = 1 + (scale - 1) *
		  (ioc->facts.MaxChainDepth-1) + scale +
		  (ioc->req_sz - 64) / (sizeof(dma_addr_t) +
		  sizeof(u32));
	}

	if (numSGE < sh->sg_tablesize) {
		/* Reset this value */
		dprintk((MYIOC_s_INFO_FMT
		  "Resetting sg_tablesize to %d from %d\n",
		  ioc->name, numSGE, sh->sg_tablesize));
		sh->sg_tablesize = numSGE;
	}

	spin_unlock_irqrestore(&ioc->FreeQlock, flags);

	hd = (MPT_SCSI_HOST *) sh->hostdata;
	hd->ioc = ioc;

	/* SCSI needs scsi_cmnd lookup table!
	 * (with size equal to req_depth*PtrSz!)
	 */
	sz = ioc->req_depth * sizeof(void *);
	mem = kmalloc(sz, GFP_ATOMIC);
	if (mem == NULL) {
		error = -ENOMEM;
		goto mptspi_probe_failed;
	}

	memset(mem, 0, sz);
	hd->ScsiLookup = (struct scsi_cmnd **) mem;

	dprintk((MYIOC_s_INFO_FMT "ScsiLookup @ %p, sz=%d\n",
		 ioc->name, hd->ScsiLookup, sz));

	/* Allocate memory for the device structures.
	 * A non-Null pointer at an offset
	 * indicates a device exists.
	 * max_id = 1 + maximum id (hosts.h)
	 */
	sz = sh->max_id * sizeof(void *);
	mem = kmalloc(sz, GFP_ATOMIC);
	if (mem == NULL) {
		error = -ENOMEM;
		goto mptspi_probe_failed;
	}

	memset(mem, 0, sz);
	hd->Targets = (VirtDevice **) mem;

	dprintk((KERN_INFO
	  "  Targets @ %p, sz=%d\n", hd->Targets, sz));

	/* Clear the TM flags
	 */
	hd->tmPending = 0;
	hd->tmState = TM_STATE_NONE;
	hd->resetPending = 0;
	hd->abortSCpnt = NULL;

	/* Clear the pointer used to store
	 * single-threaded commands, i.e., those
	 * issued during a bus scan, dv and
	 * configuration pages.
	 */
	hd->cmdPtr = NULL;

	/* Initialize this SCSI Hosts' timers
	 * To use, set the timer expires field
	 * and add_timer
	 */
	init_timer(&hd->timer);
	hd->timer.data = (unsigned long) hd;
	hd->timer.function = mptscsih_timer_expired;

	ioc->spi_data.Saf_Te = mpt_saf_te;
	hd->mpt_pq_filter = mpt_pq_filter;

#ifdef MPTSCSIH_ENABLE_DOMAIN_VALIDATION
	if (ioc->spi_data.maxBusWidth > mpt_width)
		ioc->spi_data.maxBusWidth = mpt_width;
	if (ioc->spi_data.minSyncFactor < mpt_factor)
		ioc->spi_data.minSyncFactor = mpt_factor;
	if (ioc->spi_data.minSyncFactor == MPT_ASYNC) {
		ioc->spi_data.maxSyncOffset = 0;
	}
	ioc->spi_data.mpt_dv = mpt_dv;
	hd->negoNvram = 0;

	ddvprintk((MYIOC_s_INFO_FMT
		"dv %x width %x factor %x saf_te %x mpt_pq_filter %x\n",
		ioc->name,
		mpt_dv,
		mpt_width,
		mpt_factor,
		mpt_saf_te,
		mpt_pq_filter));
#else
	hd->negoNvram = MPT_SCSICFG_USE_NVRAM;
	ddvprintk((MYIOC_s_INFO_FMT
		"saf_te %x mpt_pq_filter %x\n",
		ioc->name,
		mpt_saf_te,
		mpt_pq_filter));
#endif

	ioc->spi_data.forceDv = 0;
	ioc->spi_data.noQas = 0;

	for (ii=0; ii < MPT_MAX_SCSI_DEVICES; ii++)
		ioc->spi_data.dvStatus[ii] =
		  MPT_SCSICFG_NEGOTIATE;

	for (ii=0; ii < MPT_MAX_SCSI_DEVICES; ii++)
		ioc->spi_data.dvStatus[ii] |=
		  MPT_SCSICFG_DV_NOT_DONE;

	init_waitqueue_head(&hd->scandv_waitq);
	hd->scandv_wait_done = 0;
	hd->last_queue_full = 0;

	error = scsi_add_host (sh, &ioc->pcidev->dev);
	if(error) {
		dprintk((KERN_ERR MYNAM
		  "scsi_add_host failed\n"));
		goto mptspi_probe_failed;
	}

	scsi_scan_host(sh);
	return 0;

mptspi_probe_failed:

	mptscsih_remove(pdev);
	return error;
}

static struct pci_driver mptspi_driver = {
	.name		= "mptspi",
	.id_table	= mptspi_pci_table,
	.probe		= mptspi_probe,
	.remove		= __devexit_p(mptscsih_remove),
	.shutdown	= mptscsih_shutdown,
#ifdef CONFIG_PM
	.suspend	= mptscsih_suspend,
	.resume		= mptscsih_resume,
#endif
};

/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
/**
 *	mptspi_init - Register MPT adapter(s) as SCSI host(s) with
 *	linux scsi mid-layer.
 *
 *	Returns 0 for success, non-zero for failure.
 */
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);
Commit	Line	Data
243eabcf MED	1	/*
	2	* linux/drivers/message/fusion/mptspi.c
	3	* For use with LSI Logic PCI chip/adapter(s)
	4	* running LSI Logic Fusion MPT (Message Passing Technology) firmware.
	5	*
	6	* Copyright (c) 1999-2005 LSI Logic Corporation
	7	* (mailto:mpt_linux_developer@lsil.com)
	8	*
	9	*/
	10	/=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=/
	11	/*
	12	This program is free software; you can redistribute it and/or modify
	13	it under the terms of the GNU General Public License as published by
	14	the Free Software Foundation; version 2 of the License.
	15
	16	This program is distributed in the hope that it will be useful,
	17	but WITHOUT ANY WARRANTY; without even the implied warranty of
	18	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	19	GNU General Public License for more details.
	20
	21	NO WARRANTY
	22	THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
	23	CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
	24	LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
	25	MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
	26	solely responsible for determining the appropriateness of using and
	27	distributing the Program and assumes all risks associated with its
	28	exercise of rights under this Agreement, including but not limited to
	29	the risks and costs of program errors, damage to or loss of data,
	30	programs or equipment, and unavailability or interruption of operations.
	31
	32	DISCLAIMER OF LIABILITY
	33	NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
	34	DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	35	DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
	36	ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
	37	TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
	38	USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
	39	HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
	40
	41	You should have received a copy of the GNU General Public License
	42	along with this program; if not, write to the Free Software
	43	Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	44	*/
	45	/=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=/
	46
	47	#include "linux_compat.h" /* linux-2.6 tweaks */
	48	#include <linux/module.h>
	49	#include <linux/kernel.h>
	50	#include <linux/init.h>
	51	#include <linux/errno.h>
	52	#include <linux/kdev_t.h>
	53	#include <linux/blkdev.h>
	54	#include <linux/delay.h> /* for mdelay */
	55	#include <linux/interrupt.h> /* needed for in_interrupt() proto */
	56	#include <linux/reboot.h> /* notifier code */
	57	#include <linux/sched.h>
	58	#include <linux/workqueue.h>
	59
	60	#include <scsi/scsi.h>
	61	#include <scsi/scsi_cmnd.h>
	62	#include <scsi/scsi_device.h>
	63	#include <scsi/scsi_host.h>
	64	#include <scsi/scsi_tcq.h>
65
66	#include "mptbase.h"
67	#include "mptscsih.h"
68
69	/=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=/
70	#define my_NAME "Fusion MPT SPI Host driver"
71	#define my_VERSION MPT_LINUX_VERSION_COMMON
72	#define MYNAM "mptspi"
73
74	MODULE_AUTHOR(MODULEAUTHOR);
75	MODULE_DESCRIPTION(my_NAME);
76	MODULE_LICENSE("GPL");
77
78	/* Command line args */
79	#ifdef MPTSCSIH_ENABLE_DOMAIN_VALIDATION
80	static int mpt_dv = MPTSCSIH_DOMAIN_VALIDATION;
81	module_param(mpt_dv, int, 0);
82	MODULE_PARM_DESC(mpt_dv, " DV Algorithm: enhanced=1, basic=0 (default=MPTSCSIH_DOMAIN_VALIDATION=1)");
83
84	static int mpt_width = MPTSCSIH_MAX_WIDTH;
85	module_param(mpt_width, int, 0);
86	MODULE_PARM_DESC(mpt_width, " Max Bus Width: wide=1, narrow=0 (default=MPTSCSIH_MAX_WIDTH=1)");
87
88	static ushort mpt_factor = MPTSCSIH_MIN_SYNC;
89	module_param(mpt_factor, ushort, 0);
90	MODULE_PARM_DESC(mpt_factor, " Min Sync Factor (default=MPTSCSIH_MIN_SYNC=0x08)");
91	#endif
92
93	static int mpt_saf_te = MPTSCSIH_SAF_TE;
94	module_param(mpt_saf_te, int, 0);
95	MODULE_PARM_DESC(mpt_saf_te, " Force enabling SEP Processor: enable=1 (default=MPTSCSIH_SAF_TE=0)");
96
97	static int mpt_pq_filter = 0;
98	module_param(mpt_pq_filter, int, 0);
99	MODULE_PARM_DESC(mpt_pq_filter, " Enable peripheral qualifier filter: enable=1 (default=0)");
100
101	static int mptspiDoneCtx = -1;
102	static int mptspiTaskCtx = -1;
103	static int mptspiInternalCtx = -1; /* Used only for internal commands */
104
243eabcf	105	static struct scsi_host_template mptspi_driver_template = {
f78496da	106	.module = THIS_MODULE,
243eabcf MED	107	.proc_name = "mptspi",
	108	.proc_info = mptscsih_proc_info,
	109	.name = "MPT SPI Host",
	110	.info = mptscsih_info,
	111	.queuecommand = mptscsih_qcmd,
	112	.slave_alloc = mptscsih_slave_alloc,
	113	.slave_configure = mptscsih_slave_configure,
	114	.slave_destroy = mptscsih_slave_destroy,
6e3815ba	115	.change_queue_depth = mptscsih_change_queue_depth,
243eabcf MED	116	.eh_abort_handler = mptscsih_abort,
	117	.eh_device_reset_handler = mptscsih_dev_reset,
	118	.eh_bus_reset_handler = mptscsih_bus_reset,
	119	.eh_host_reset_handler = mptscsih_host_reset,
	120	.bios_param = mptscsih_bios_param,
	121	.can_queue = MPT_SCSI_CAN_QUEUE,
	122	.this_id = -1,
	123	.sg_tablesize = MPT_SCSI_SG_DEPTH,
	124	.max_sectors = 8192,
	125	.cmd_per_lun = 7,
	126	.use_clustering = ENABLE_CLUSTERING,
243eabcf MED	127	};
	128
	129
	130	/****************************************************************************
	131	* Supported hardware
	132	*/
	133
	134	static struct pci_device_id mptspi_pci_table[] = {
	135	{ PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C1030,
	136	PCI_ANY_ID, PCI_ANY_ID },
	137	{ PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_1030_53C1035,
	138	PCI_ANY_ID, PCI_ANY_ID },
	139	{0} /* Terminating entry */
	140	};
	141	MODULE_DEVICE_TABLE(pci, mptspi_pci_table);
	142
	143	/=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=/
	144	/=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=/
	145	/*
	146	* mptspi_probe - Installs scsi devices per bus.
	147	* @pdev: Pointer to pci_dev structure
	148	*
	149	* Returns 0 for success, non-zero for failure.
	150	*
	151	*/
	152	static int
	153	mptspi_probe(struct pci_dev pdev, const struct pci_device_id id)
	154	{
	155	struct Scsi_Host *sh;
	156	MPT_SCSI_HOST *hd;
	157	MPT_ADAPTER *ioc;
	158	unsigned long flags;
	159	int sz, ii;
	160	int numSGE = 0;
	161	int scale;
	162	int ioc_cap;
	163	u8 *mem;
	164	int error=0;
	165	int r;
c6678e0c	166
243eabcf MED	167	if ((r = mpt_attach(pdev,id)) != 0)
243eabcf MED	168	return r;
c6678e0c	169
243eabcf	170	ioc = pci_get_drvdata(pdev);
d335cc38 MED	171	ioc->DoneCtx = mptspiDoneCtx;
	172	ioc->TaskCtx = mptspiTaskCtx;
	173	ioc->InternalCtx = mptspiInternalCtx;
c6678e0c	174
243eabcf MED	175	/* Added sanity check on readiness of the MPT adapter.
	176	*/
	177	if (ioc->last_state != MPI_IOC_STATE_OPERATIONAL) {
	178	printk(MYIOC_s_WARN_FMT
	179	"Skipping because it's not operational!\n",
	180	ioc->name);
	181	return -ENODEV;
	182	}
	183
	184	if (!ioc->active) {
	185	printk(MYIOC_s_WARN_FMT "Skipping because it's disabled!\n",
	186	ioc->name);
	187	return -ENODEV;
	188	}
	189
	190	/* Sanity check - ensure at least 1 port is INITIATOR capable
	191	*/
	192	ioc_cap = 0;
	193	for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) {
	194	if (ioc->pfacts[ii].ProtocolFlags &
	195	MPI_PORTFACTS_PROTOCOL_INITIATOR)
	196	ioc_cap ++;
	197	}
	198
	199	if (!ioc_cap) {
	200	printk(MYIOC_s_WARN_FMT
	201	"Skipping ioc=%p because SCSI Initiator mode is NOT enabled!\n",
	202	ioc->name, ioc);
466544d8	203	return 0;
243eabcf MED	204	}
	205
	206	sh = scsi_host_alloc(&mptspi_driver_template, sizeof(MPT_SCSI_HOST));
	207
	208	if (!sh) {
	209	printk(MYIOC_s_WARN_FMT
	210	"Unable to register controller with SCSI subsystem\n",
	211	ioc->name);
	212	return -1;
	213	}
	214
	215	spin_lock_irqsave(&ioc->FreeQlock, flags);
	216
	217	/* Attach the SCSI Host to the IOC structure
	218	*/
	219	ioc->sh = sh;
	220
	221	sh->io_port = 0;
	222	sh->n_io_port = 0;
	223	sh->irq = 0;
	224
	225	/* set 16 byte cdb's */
	226	sh->max_cmd_len = 16;
	227
	228	/* Yikes! This is important!
	229	* Otherwise, by default, linux
	230	* only scans target IDs 0-7!
	231	* pfactsN->MaxDevices unreliable
	232	* (not supported in early
	233	* versions of the FW).
	234	* max_id = 1 + actual max id,
	235	* max_lun = 1 + actual last lun,
	236	* see hosts.h :o(
	237	*/
	238	sh->max_id = MPT_MAX_SCSI_DEVICES;
	239
	240	sh->max_lun = MPT_LAST_LUN + 1;
	241	sh->max_channel = 0;
	242	sh->this_id = ioc->pfacts[0].PortSCSIID;
	243
	244	/* Required entry.
	245	*/
	246	sh->unique_id = ioc->id;
	247
	248	/* Verify that we won't exceed the maximum
	249	* number of chain buffers
	250	* We can optimize: ZZ = req_sz/sizeof(SGE)
	251	* For 32bit SGE's:
	252	* numSGE = 1 + (ZZ-1)*(maxChain -1) + ZZ
	253	* + (req_sz - 64)/sizeof(SGE)
	254	* A slightly different algorithm is required for
	255	* 64bit SGEs.
	256	*/
	257	scale = ioc->req_sz/(sizeof(dma_addr_t) + sizeof(u32));
	258	if (sizeof(dma_addr_t) == sizeof(u64)) {
	259	numSGE = (scale - 1) *
	260	(ioc->facts.MaxChainDepth-1) + scale +
	261	(ioc->req_sz - 60) / (sizeof(dma_addr_t) +
	262	sizeof(u32));
	263	} else {
	264	numSGE = 1 + (scale - 1) *
	265	(ioc->facts.MaxChainDepth-1) + scale +
	266	(ioc->req_sz - 64) / (sizeof(dma_addr_t) +
	267	sizeof(u32));
268	}
269
270	if (numSGE < sh->sg_tablesize) {
271	/* Reset this value */
272	dprintk((MYIOC_s_INFO_FMT
273	"Resetting sg_tablesize to %d from %d\n",
274	ioc->name, numSGE, sh->sg_tablesize));
275	sh->sg_tablesize = numSGE;
276	}
277
243eabcf MED	278	spin_unlock_irqrestore(&ioc->FreeQlock, flags);
	279
	280	hd = (MPT_SCSI_HOST *) sh->hostdata;
	281	hd->ioc = ioc;
	282
	283	/* SCSI needs scsi_cmnd lookup table!
	284	* (with size equal to req_depth*PtrSz!)
	285	*/
	286	sz = ioc->req_depth * sizeof(void *);
	287	mem = kmalloc(sz, GFP_ATOMIC);
	288	if (mem == NULL) {
	289	error = -ENOMEM;
	290	goto mptspi_probe_failed;
	291	}
	292
	293	memset(mem, 0, sz);
	294	hd->ScsiLookup = (struct scsi_cmnd **) mem;
	295
	296	dprintk((MYIOC_s_INFO_FMT "ScsiLookup @ %p, sz=%d\n",
	297	ioc->name, hd->ScsiLookup, sz));
	298
	299	/* Allocate memory for the device structures.
	300	* A non-Null pointer at an offset
	301	* indicates a device exists.
	302	* max_id = 1 + maximum id (hosts.h)
	303	*/
	304	sz = sh->max_id * sizeof(void *);
	305	mem = kmalloc(sz, GFP_ATOMIC);
	306	if (mem == NULL) {
	307	error = -ENOMEM;
	308	goto mptspi_probe_failed;
	309	}
	310
	311	memset(mem, 0, sz);
	312	hd->Targets = (VirtDevice **) mem;
	313
	314	dprintk((KERN_INFO
	315	" Targets @ %p, sz=%d\n", hd->Targets, sz));
	316
	317	/* Clear the TM flags
	318	*/
	319	hd->tmPending = 0;
	320	hd->tmState = TM_STATE_NONE;
	321	hd->resetPending = 0;
	322	hd->abortSCpnt = NULL;
	323
	324	/* Clear the pointer used to store
	325	* single-threaded commands, i.e., those
	326	* issued during a bus scan, dv and
	327	* configuration pages.
	328	*/
	329	hd->cmdPtr = NULL;
	330
	331	/* Initialize this SCSI Hosts' timers
	332	* To use, set the timer expires field
	333	* and add_timer
	334	*/
	335	init_timer(&hd->timer);
	336	hd->timer.data = (unsigned long) hd;
	337	hd->timer.function = mptscsih_timer_expired;
	338
	339	ioc->spi_data.Saf_Te = mpt_saf_te;
	340	hd->mpt_pq_filter = mpt_pq_filter;
	341
342	#ifdef MPTSCSIH_ENABLE_DOMAIN_VALIDATION
343	if (ioc->spi_data.maxBusWidth > mpt_width)
344	ioc->spi_data.maxBusWidth = mpt_width;
345	if (ioc->spi_data.minSyncFactor < mpt_factor)
346	ioc->spi_data.minSyncFactor = mpt_factor;
347	if (ioc->spi_data.minSyncFactor == MPT_ASYNC) {
348	ioc->spi_data.maxSyncOffset = 0;
349	}
350	ioc->spi_data.mpt_dv = mpt_dv;
351	hd->negoNvram = 0;
352
353	ddvprintk((MYIOC_s_INFO_FMT
354	"dv %x width %x factor %x saf_te %x mpt_pq_filter %x\n",
355	ioc->name,
356	mpt_dv,
357	mpt_width,
358	mpt_factor,
359	mpt_saf_te,
360	mpt_pq_filter));
361	#else
362	hd->negoNvram = MPT_SCSICFG_USE_NVRAM;
363	ddvprintk((MYIOC_s_INFO_FMT
364	"saf_te %x mpt_pq_filter %x\n",
365	ioc->name,
366	mpt_saf_te,
367	mpt_pq_filter));
368	#endif
369
370	ioc->spi_data.forceDv = 0;
371	ioc->spi_data.noQas = 0;
372
373	for (ii=0; ii < MPT_MAX_SCSI_DEVICES; ii++)
374	ioc->spi_data.dvStatus[ii] =
375	MPT_SCSICFG_NEGOTIATE;
376
377	for (ii=0; ii < MPT_MAX_SCSI_DEVICES; ii++)
378	ioc->spi_data.dvStatus[ii] \|=
379	MPT_SCSICFG_DV_NOT_DONE;
380
381	init_waitqueue_head(&hd->scandv_waitq);
382	hd->scandv_wait_done = 0;
383	hd->last_queue_full = 0;
384
243eabcf MED	385	error = scsi_add_host (sh, &ioc->pcidev->dev);
	386	if(error) {
	387	dprintk((KERN_ERR MYNAM
	388	"scsi_add_host failed\n"));
	389	goto mptspi_probe_failed;
	390	}
	391
	392	scsi_scan_host(sh);
	393	return 0;
	394
	395	mptspi_probe_failed:
	396
	397	mptscsih_remove(pdev);
	398	return error;
	399	}
	400
	401	static struct pci_driver mptspi_driver = {
	402	.name = "mptspi",
	403	.id_table = mptspi_pci_table,
	404	.probe = mptspi_probe,
	405	.remove = __devexit_p(mptscsih_remove),
d18c3db5	406	.shutdown = mptscsih_shutdown,
243eabcf MED	407	#ifdef CONFIG_PM
	408	.suspend = mptscsih_suspend,
	409	.resume = mptscsih_resume,
	410	#endif
	411	};
	412
	413	/=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=/
	414	/**
	415	* mptspi_init - Register MPT adapter(s) as SCSI host(s) with
	416	* linux scsi mid-layer.
	417	*
	418	* Returns 0 for success, non-zero for failure.
	419	*/
	420	static int __init
	421	mptspi_init(void)
	422	{
	423
	424	show_mptmod_ver(my_NAME, my_VERSION);
	425
	426	mptspiDoneCtx = mpt_register(mptscsih_io_done, MPTSPI_DRIVER);
	427	mptspiTaskCtx = mpt_register(mptscsih_taskmgmt_complete, MPTSPI_DRIVER);
	428	mptspiInternalCtx = mpt_register(mptscsih_scandv_complete, MPTSPI_DRIVER);
	429
	430	if (mpt_event_register(mptspiDoneCtx, mptscsih_event_process) == 0) {
	431	devtprintk((KERN_INFO MYNAM
	432	": Registered for IOC event notifications\n"));
	433	}
	434
	435	if (mpt_reset_register(mptspiDoneCtx, mptscsih_ioc_reset) == 0) {
	436	dprintk((KERN_INFO MYNAM
	437	": Registered for IOC reset notifications\n"));
	438	}
	439
	440	return pci_register_driver(&mptspi_driver);
	441	}
	442
	443	/=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=/
	444	/=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=/
	445	/**
	446	* mptspi_exit - Unregisters MPT adapter(s)
	447	*
	448	*/
	449	static void __exit
	450	mptspi_exit(void)
	451	{
	452	pci_unregister_driver(&mptspi_driver);
	453
	454	mpt_reset_deregister(mptspiDoneCtx);
	455	dprintk((KERN_INFO MYNAM
	456	": Deregistered for IOC reset notifications\n"));
	457
	458	mpt_event_deregister(mptspiDoneCtx);
	459	dprintk((KERN_INFO MYNAM
	460	": Deregistered for IOC event notifications\n"));
	461
	462	mpt_deregister(mptspiInternalCtx);
	463	mpt_deregister(mptspiTaskCtx);
	464	mpt_deregister(mptspiDoneCtx);
	465	}
	466
	467	module_init(mptspi_init);
	468	module_exit(mptspi_exit);