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.
6 * Copyright (c) 1999-2005 LSI Logic Corporation
7 * (mailto:mpt_linux_developer@lsil.com)
10 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
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.
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.
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.
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
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
45 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
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>
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>
69 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
70 #define my_NAME "Fusion MPT SPI Host driver"
71 #define my_VERSION MPT_LINUX_VERSION_COMMON
72 #define MYNAM "mptspi"
74 MODULE_AUTHOR(MODULEAUTHOR
);
75 MODULE_DESCRIPTION(my_NAME
);
76 MODULE_LICENSE("GPL");
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)");
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)");
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)");
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)");
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)");
101 static int mptspiDoneCtx
= -1;
102 static int mptspiTaskCtx
= -1;
103 static int mptspiInternalCtx
= -1; /* Used only for internal commands */
105 static struct scsi_host_template mptspi_driver_template
= {
106 .module
= THIS_MODULE
,
107 .proc_name
= "mptspi",
108 .proc_info
= mptscsih_proc_info
,
109 .name
= "MPT SPI Host",
110 .info
= mptscsih_info
,
111 .queuecommand
= mptscsih_qcmd
,
112 .target_alloc
= mptscsih_target_alloc
,
113 .slave_alloc
= mptscsih_slave_alloc
,
114 .slave_configure
= mptscsih_slave_configure
,
115 .target_destroy
= mptscsih_target_destroy
,
116 .slave_destroy
= mptscsih_slave_destroy
,
117 .change_queue_depth
= mptscsih_change_queue_depth
,
118 .eh_abort_handler
= mptscsih_abort
,
119 .eh_device_reset_handler
= mptscsih_dev_reset
,
120 .eh_bus_reset_handler
= mptscsih_bus_reset
,
121 .eh_host_reset_handler
= mptscsih_host_reset
,
122 .bios_param
= mptscsih_bios_param
,
123 .can_queue
= MPT_SCSI_CAN_QUEUE
,
125 .sg_tablesize
= MPT_SCSI_SG_DEPTH
,
128 .use_clustering
= ENABLE_CLUSTERING
,
132 /****************************************************************************
136 static struct pci_device_id mptspi_pci_table
[] = {
137 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_LSI_53C1030
,
138 PCI_ANY_ID
, PCI_ANY_ID
},
139 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_LSI_1030_53C1035
,
140 PCI_ANY_ID
, PCI_ANY_ID
},
141 {0} /* Terminating entry */
143 MODULE_DEVICE_TABLE(pci
, mptspi_pci_table
);
145 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
146 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
148 * mptspi_probe - Installs scsi devices per bus.
149 * @pdev: Pointer to pci_dev structure
151 * Returns 0 for success, non-zero for failure.
155 mptspi_probe(struct pci_dev
*pdev
, const struct pci_device_id
*id
)
157 struct Scsi_Host
*sh
;
168 if ((r
= mpt_attach(pdev
,id
)) != 0)
171 ioc
= pci_get_drvdata(pdev
);
172 ioc
->DoneCtx
= mptspiDoneCtx
;
173 ioc
->TaskCtx
= mptspiTaskCtx
;
174 ioc
->InternalCtx
= mptspiInternalCtx
;
176 /* Added sanity check on readiness of the MPT adapter.
178 if (ioc
->last_state
!= MPI_IOC_STATE_OPERATIONAL
) {
179 printk(MYIOC_s_WARN_FMT
180 "Skipping because it's not operational!\n",
183 goto out_mptspi_probe
;
187 printk(MYIOC_s_WARN_FMT
"Skipping because it's disabled!\n",
190 goto out_mptspi_probe
;
193 /* Sanity check - ensure at least 1 port is INITIATOR capable
196 for (ii
=0; ii
< ioc
->facts
.NumberOfPorts
; ii
++) {
197 if (ioc
->pfacts
[ii
].ProtocolFlags
&
198 MPI_PORTFACTS_PROTOCOL_INITIATOR
)
203 printk(MYIOC_s_WARN_FMT
204 "Skipping ioc=%p because SCSI Initiator mode is NOT enabled!\n",
209 sh
= scsi_host_alloc(&mptspi_driver_template
, sizeof(MPT_SCSI_HOST
));
212 printk(MYIOC_s_WARN_FMT
213 "Unable to register controller with SCSI subsystem\n",
216 goto out_mptspi_probe
;
219 spin_lock_irqsave(&ioc
->FreeQlock
, flags
);
221 /* Attach the SCSI Host to the IOC structure
229 /* set 16 byte cdb's */
230 sh
->max_cmd_len
= 16;
232 /* Yikes! This is important!
233 * Otherwise, by default, linux
234 * only scans target IDs 0-7!
235 * pfactsN->MaxDevices unreliable
236 * (not supported in early
237 * versions of the FW).
238 * max_id = 1 + actual max id,
239 * max_lun = 1 + actual last lun,
242 sh
->max_id
= MPT_MAX_SCSI_DEVICES
;
244 sh
->max_lun
= MPT_LAST_LUN
+ 1;
246 sh
->this_id
= ioc
->pfacts
[0].PortSCSIID
;
250 sh
->unique_id
= ioc
->id
;
252 /* Verify that we won't exceed the maximum
253 * number of chain buffers
254 * We can optimize: ZZ = req_sz/sizeof(SGE)
256 * numSGE = 1 + (ZZ-1)*(maxChain -1) + ZZ
257 * + (req_sz - 64)/sizeof(SGE)
258 * A slightly different algorithm is required for
261 scale
= ioc
->req_sz
/(sizeof(dma_addr_t
) + sizeof(u32
));
262 if (sizeof(dma_addr_t
) == sizeof(u64
)) {
263 numSGE
= (scale
- 1) *
264 (ioc
->facts
.MaxChainDepth
-1) + scale
+
265 (ioc
->req_sz
- 60) / (sizeof(dma_addr_t
) +
268 numSGE
= 1 + (scale
- 1) *
269 (ioc
->facts
.MaxChainDepth
-1) + scale
+
270 (ioc
->req_sz
- 64) / (sizeof(dma_addr_t
) +
274 if (numSGE
< sh
->sg_tablesize
) {
275 /* Reset this value */
276 dprintk((MYIOC_s_INFO_FMT
277 "Resetting sg_tablesize to %d from %d\n",
278 ioc
->name
, numSGE
, sh
->sg_tablesize
));
279 sh
->sg_tablesize
= numSGE
;
282 spin_unlock_irqrestore(&ioc
->FreeQlock
, flags
);
284 hd
= (MPT_SCSI_HOST
*) sh
->hostdata
;
287 /* SCSI needs scsi_cmnd lookup table!
288 * (with size equal to req_depth*PtrSz!)
290 hd
->ScsiLookup
= kcalloc(ioc
->req_depth
, sizeof(void *), GFP_ATOMIC
);
291 if (!hd
->ScsiLookup
) {
293 goto out_mptspi_probe
;
296 dprintk((MYIOC_s_INFO_FMT
"ScsiLookup @ %p\n",
297 ioc
->name
, hd
->ScsiLookup
));
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)
304 hd
->Targets
= kcalloc(sh
->max_id
, sizeof(void *), GFP_ATOMIC
);
307 goto out_mptspi_probe
;
310 dprintk((KERN_INFO
" vdev @ %p\n", hd
->Targets
));
312 /* Clear the TM flags
315 hd
->tmState
= TM_STATE_NONE
;
316 hd
->resetPending
= 0;
317 hd
->abortSCpnt
= NULL
;
319 /* Clear the pointer used to store
320 * single-threaded commands, i.e., those
321 * issued during a bus scan, dv and
322 * configuration pages.
326 /* Initialize this SCSI Hosts' timers
327 * To use, set the timer expires field
330 init_timer(&hd
->timer
);
331 hd
->timer
.data
= (unsigned long) hd
;
332 hd
->timer
.function
= mptscsih_timer_expired
;
334 ioc
->spi_data
.Saf_Te
= mpt_saf_te
;
335 hd
->mpt_pq_filter
= mpt_pq_filter
;
337 #ifdef MPTSCSIH_ENABLE_DOMAIN_VALIDATION
338 if (ioc
->spi_data
.maxBusWidth
> mpt_width
)
339 ioc
->spi_data
.maxBusWidth
= mpt_width
;
340 if (ioc
->spi_data
.minSyncFactor
< mpt_factor
)
341 ioc
->spi_data
.minSyncFactor
= mpt_factor
;
342 if (ioc
->spi_data
.minSyncFactor
== MPT_ASYNC
) {
343 ioc
->spi_data
.maxSyncOffset
= 0;
345 ioc
->spi_data
.mpt_dv
= mpt_dv
;
348 ddvprintk((MYIOC_s_INFO_FMT
349 "dv %x width %x factor %x saf_te %x mpt_pq_filter %x\n",
357 hd
->negoNvram
= MPT_SCSICFG_USE_NVRAM
;
358 ddvprintk((MYIOC_s_INFO_FMT
359 "saf_te %x mpt_pq_filter %x\n",
365 ioc
->spi_data
.forceDv
= 0;
366 ioc
->spi_data
.noQas
= 0;
368 for (ii
=0; ii
< MPT_MAX_SCSI_DEVICES
; ii
++)
369 ioc
->spi_data
.dvStatus
[ii
] =
370 MPT_SCSICFG_NEGOTIATE
;
372 for (ii
=0; ii
< MPT_MAX_SCSI_DEVICES
; ii
++)
373 ioc
->spi_data
.dvStatus
[ii
] |=
374 MPT_SCSICFG_DV_NOT_DONE
;
376 init_waitqueue_head(&hd
->scandv_waitq
);
377 hd
->scandv_wait_done
= 0;
378 hd
->last_queue_full
= 0;
380 error
= scsi_add_host (sh
, &ioc
->pcidev
->dev
);
382 dprintk((KERN_ERR MYNAM
383 "scsi_add_host failed\n"));
384 goto out_mptspi_probe
;
392 mptscsih_remove(pdev
);
396 static struct pci_driver mptspi_driver
= {
398 .id_table
= mptspi_pci_table
,
399 .probe
= mptspi_probe
,
400 .remove
= __devexit_p(mptscsih_remove
),
401 .shutdown
= mptscsih_shutdown
,
403 .suspend
= mptscsih_suspend
,
404 .resume
= mptscsih_resume
,
408 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
410 * mptspi_init - Register MPT adapter(s) as SCSI host(s) with
411 * linux scsi mid-layer.
413 * Returns 0 for success, non-zero for failure.
419 show_mptmod_ver(my_NAME
, my_VERSION
);
421 mptspiDoneCtx
= mpt_register(mptscsih_io_done
, MPTSPI_DRIVER
);
422 mptspiTaskCtx
= mpt_register(mptscsih_taskmgmt_complete
, MPTSPI_DRIVER
);
423 mptspiInternalCtx
= mpt_register(mptscsih_scandv_complete
, MPTSPI_DRIVER
);
425 if (mpt_event_register(mptspiDoneCtx
, mptscsih_event_process
) == 0) {
426 devtprintk((KERN_INFO MYNAM
427 ": Registered for IOC event notifications\n"));
430 if (mpt_reset_register(mptspiDoneCtx
, mptscsih_ioc_reset
) == 0) {
431 dprintk((KERN_INFO MYNAM
432 ": Registered for IOC reset notifications\n"));
435 return pci_register_driver(&mptspi_driver
);
438 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
439 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
441 * mptspi_exit - Unregisters MPT adapter(s)
447 pci_unregister_driver(&mptspi_driver
);
449 mpt_reset_deregister(mptspiDoneCtx
);
450 dprintk((KERN_INFO MYNAM
451 ": Deregistered for IOC reset notifications\n"));
453 mpt_event_deregister(mptspiDoneCtx
);
454 dprintk((KERN_INFO MYNAM
455 ": Deregistered for IOC event notifications\n"));
457 mpt_deregister(mptspiInternalCtx
);
458 mpt_deregister(mptspiTaskCtx
);
459 mpt_deregister(mptspiDoneCtx
);
462 module_init(mptspi_init
);
463 module_exit(mptspi_exit
);