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 .proc_name = "mptspi",
107 .proc_info = mptscsih_proc_info,
108 .name = "MPT SPI Host",
109 .info = mptscsih_info,
110 .queuecommand = mptscsih_qcmd,
111 .slave_alloc = mptscsih_slave_alloc,
112 .slave_configure = mptscsih_slave_configure,
113 .slave_destroy = mptscsih_slave_destroy,
114 .change_queue_depth = mptscsih_change_queue_depth,
115 .eh_abort_handler = mptscsih_abort,
116 .eh_device_reset_handler = mptscsih_dev_reset,
117 .eh_bus_reset_handler = mptscsih_bus_reset,
118 .eh_host_reset_handler = mptscsih_host_reset,
119 .bios_param = mptscsih_bios_param,
120 .can_queue = MPT_SCSI_CAN_QUEUE,
122 .sg_tablesize = MPT_SCSI_SG_DEPTH,
125 .use_clustering = ENABLE_CLUSTERING,
129 /****************************************************************************
133 static struct pci_device_id mptspi_pci_table[] = {
134 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C1030,
135 PCI_ANY_ID, PCI_ANY_ID },
136 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_1030_53C1035,
137 PCI_ANY_ID, PCI_ANY_ID },
138 {0} /* Terminating entry */
140 MODULE_DEVICE_TABLE(pci, mptspi_pci_table);
142 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
143 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
145 * mptspi_probe - Installs scsi devices per bus.
146 * @pdev: Pointer to pci_dev structure
148 * Returns 0 for success, non-zero for failure.
152 mptspi_probe(struct pci_dev *pdev, const struct pci_device_id *id)
154 struct Scsi_Host *sh;
166 if ((r = mpt_attach(pdev,id)) != 0)
169 ioc = pci_get_drvdata(pdev);
170 ioc->DoneCtx = mptspiDoneCtx;
171 ioc->TaskCtx = mptspiTaskCtx;
172 ioc->InternalCtx = mptspiInternalCtx;
174 /* Added sanity check on readiness of the MPT adapter.
176 if (ioc->last_state != MPI_IOC_STATE_OPERATIONAL) {
177 printk(MYIOC_s_WARN_FMT
178 "Skipping because it's not operational!\n",
184 printk(MYIOC_s_WARN_FMT "Skipping because it's disabled!\n",
189 /* Sanity check - ensure at least 1 port is INITIATOR capable
192 for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) {
193 if (ioc->pfacts[ii].ProtocolFlags &
194 MPI_PORTFACTS_PROTOCOL_INITIATOR)
199 printk(MYIOC_s_WARN_FMT
200 "Skipping ioc=%p because SCSI Initiator mode is NOT enabled!\n",
205 sh = scsi_host_alloc(&mptspi_driver_template, sizeof(MPT_SCSI_HOST));
208 printk(MYIOC_s_WARN_FMT
209 "Unable to register controller with SCSI subsystem\n",
214 spin_lock_irqsave(&ioc->FreeQlock, flags);
216 /* Attach the SCSI Host to the IOC structure
224 /* set 16 byte cdb's */
225 sh->max_cmd_len = 16;
227 /* Yikes! This is important!
228 * Otherwise, by default, linux
229 * only scans target IDs 0-7!
230 * pfactsN->MaxDevices unreliable
231 * (not supported in early
232 * versions of the FW).
233 * max_id = 1 + actual max id,
234 * max_lun = 1 + actual last lun,
237 sh->max_id = MPT_MAX_SCSI_DEVICES;
239 sh->max_lun = MPT_LAST_LUN + 1;
241 sh->this_id = ioc->pfacts[0].PortSCSIID;
245 sh->unique_id = ioc->id;
247 /* Verify that we won't exceed the maximum
248 * number of chain buffers
249 * We can optimize: ZZ = req_sz/sizeof(SGE)
251 * numSGE = 1 + (ZZ-1)*(maxChain -1) + ZZ
252 * + (req_sz - 64)/sizeof(SGE)
253 * A slightly different algorithm is required for
256 scale = ioc->req_sz/(sizeof(dma_addr_t) + sizeof(u32));
257 if (sizeof(dma_addr_t) == sizeof(u64)) {
258 numSGE = (scale - 1) *
259 (ioc->facts.MaxChainDepth-1) + scale +
260 (ioc->req_sz - 60) / (sizeof(dma_addr_t) +
263 numSGE = 1 + (scale - 1) *
264 (ioc->facts.MaxChainDepth-1) + scale +
265 (ioc->req_sz - 64) / (sizeof(dma_addr_t) +
269 if (numSGE < sh->sg_tablesize) {
270 /* Reset this value */
271 dprintk((MYIOC_s_INFO_FMT
272 "Resetting sg_tablesize to %d from %d\n",
273 ioc->name, numSGE, sh->sg_tablesize));
274 sh->sg_tablesize = numSGE;
277 spin_unlock_irqrestore(&ioc->FreeQlock, flags);
279 hd = (MPT_SCSI_HOST *) sh->hostdata;
282 /* SCSI needs scsi_cmnd lookup table!
283 * (with size equal to req_depth*PtrSz!)
285 sz = ioc->req_depth * sizeof(void *);
286 mem = kmalloc(sz, GFP_ATOMIC);
289 goto mptspi_probe_failed;
293 hd->ScsiLookup = (struct scsi_cmnd **) mem;
295 dprintk((MYIOC_s_INFO_FMT "ScsiLookup @ %p, sz=%d\n",
296 ioc->name, hd->ScsiLookup, sz));
298 /* Allocate memory for the device structures.
299 * A non-Null pointer at an offset
300 * indicates a device exists.
301 * max_id = 1 + maximum id (hosts.h)
303 sz = sh->max_id * sizeof(void *);
304 mem = kmalloc(sz, GFP_ATOMIC);
307 goto mptspi_probe_failed;
311 hd->Targets = (VirtDevice **) mem;
314 " Targets @ %p, sz=%d\n", hd->Targets, sz));
316 /* Clear the TM flags
319 hd->tmState = TM_STATE_NONE;
320 hd->resetPending = 0;
321 hd->abortSCpnt = NULL;
323 /* Clear the pointer used to store
324 * single-threaded commands, i.e., those
325 * issued during a bus scan, dv and
326 * configuration pages.
330 /* Initialize this SCSI Hosts' timers
331 * To use, set the timer expires field
334 init_timer(&hd->timer);
335 hd->timer.data = (unsigned long) hd;
336 hd->timer.function = mptscsih_timer_expired;
338 ioc->spi_data.Saf_Te = mpt_saf_te;
339 hd->mpt_pq_filter = mpt_pq_filter;
341 #ifdef MPTSCSIH_ENABLE_DOMAIN_VALIDATION
342 if (ioc->spi_data.maxBusWidth > mpt_width)
343 ioc->spi_data.maxBusWidth = mpt_width;
344 if (ioc->spi_data.minSyncFactor < mpt_factor)
345 ioc->spi_data.minSyncFactor = mpt_factor;
346 if (ioc->spi_data.minSyncFactor == MPT_ASYNC) {
347 ioc->spi_data.maxSyncOffset = 0;
349 ioc->spi_data.mpt_dv = mpt_dv;
352 ddvprintk((MYIOC_s_INFO_FMT
353 "dv %x width %x factor %x saf_te %x mpt_pq_filter %x\n",
361 hd->negoNvram = MPT_SCSICFG_USE_NVRAM;
362 ddvprintk((MYIOC_s_INFO_FMT
363 "saf_te %x mpt_pq_filter %x\n",
369 ioc->spi_data.forceDv = 0;
370 ioc->spi_data.noQas = 0;
372 for (ii=0; ii < MPT_MAX_SCSI_DEVICES; ii++)
373 ioc->spi_data.dvStatus[ii] =
374 MPT_SCSICFG_NEGOTIATE;
376 for (ii=0; ii < MPT_MAX_SCSI_DEVICES; ii++)
377 ioc->spi_data.dvStatus[ii] |=
378 MPT_SCSICFG_DV_NOT_DONE;
380 init_waitqueue_head(&hd->scandv_waitq);
381 hd->scandv_wait_done = 0;
382 hd->last_queue_full = 0;
384 error = scsi_add_host (sh, &ioc->pcidev->dev);
386 dprintk((KERN_ERR MYNAM
387 "scsi_add_host failed\n"));
388 goto mptspi_probe_failed;
396 mptscsih_remove(pdev);
400 static struct pci_driver mptspi_driver = {
402 .id_table = mptspi_pci_table,
403 .probe = mptspi_probe,
404 .remove = __devexit_p(mptscsih_remove),
405 .shutdown = mptscsih_shutdown,
407 .suspend = mptscsih_suspend,
408 .resume = mptscsih_resume,
412 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
414 * mptspi_init - Register MPT adapter(s) as SCSI host(s) with
415 * linux scsi mid-layer.
417 * Returns 0 for success, non-zero for failure.
423 show_mptmod_ver(my_NAME, my_VERSION);
425 mptspiDoneCtx = mpt_register(mptscsih_io_done, MPTSPI_DRIVER);
426 mptspiTaskCtx = mpt_register(mptscsih_taskmgmt_complete, MPTSPI_DRIVER);
427 mptspiInternalCtx = mpt_register(mptscsih_scandv_complete, MPTSPI_DRIVER);
429 if (mpt_event_register(mptspiDoneCtx, mptscsih_event_process) == 0) {
430 devtprintk((KERN_INFO MYNAM
431 ": Registered for IOC event notifications\n"));
434 if (mpt_reset_register(mptspiDoneCtx, mptscsih_ioc_reset) == 0) {
435 dprintk((KERN_INFO MYNAM
436 ": Registered for IOC reset notifications\n"));
439 return pci_register_driver(&mptspi_driver);
442 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
443 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
445 * mptspi_exit - Unregisters MPT adapter(s)
451 pci_unregister_driver(&mptspi_driver);
453 mpt_reset_deregister(mptspiDoneCtx);
454 dprintk((KERN_INFO MYNAM
455 ": Deregistered for IOC reset notifications\n"));
457 mpt_event_deregister(mptspiDoneCtx);
458 dprintk((KERN_INFO MYNAM
459 ": Deregistered for IOC event notifications\n"));
461 mpt_deregister(mptspiInternalCtx);
462 mpt_deregister(mptspiTaskCtx);
463 mpt_deregister(mptspiDoneCtx);
466 module_init(mptspi_init);
467 module_exit(mptspi_exit);