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) 1999-2007 LSI Logic Corporation
7 * (mailto:DL-MPTFusionLinux@lsi.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/module.h>
48 #include <linux/kernel.h>
49 #include <linux/init.h>
50 #include <linux/errno.h>
51 #include <linux/kdev_t.h>
52 #include <linux/blkdev.h>
53 #include <linux/delay.h> /* for mdelay */
54 #include <linux/interrupt.h> /* needed for in_interrupt() proto */
55 #include <linux/reboot.h> /* notifier code */
56 #include <linux/workqueue.h>
57 #include <linux/raid_class.h>
59 #include <scsi/scsi.h>
60 #include <scsi/scsi_cmnd.h>
61 #include <scsi/scsi_device.h>
62 #include <scsi/scsi_host.h>
63 #include <scsi/scsi_tcq.h>
64 #include <scsi/scsi_transport.h>
65 #include <scsi/scsi_transport_spi.h>
66 #include <scsi/scsi_dbg.h>
71 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
72 #define my_NAME "Fusion MPT SPI Host driver"
73 #define my_VERSION MPT_LINUX_VERSION_COMMON
74 #define MYNAM "mptspi"
76 MODULE_AUTHOR(MODULEAUTHOR);
77 MODULE_DESCRIPTION(my_NAME);
78 MODULE_LICENSE("GPL");
79 MODULE_VERSION(my_VERSION);
81 /* Command line args */
82 static int mpt_saf_te = MPTSCSIH_SAF_TE;
83 module_param(mpt_saf_te, int, 0);
84 MODULE_PARM_DESC(mpt_saf_te, " Force enabling SEP Processor: enable=1 (default=MPTSCSIH_SAF_TE=0)");
86 static void mptspi_write_offset(struct scsi_target *, int);
87 static void mptspi_write_width(struct scsi_target *, int);
88 static int mptspi_write_spi_device_pg1(struct scsi_target *,
89 struct _CONFIG_PAGE_SCSI_DEVICE_1 *);
91 static struct scsi_transport_template *mptspi_transport_template = NULL;
93 static int mptspiDoneCtx = -1;
94 static int mptspiTaskCtx = -1;
95 static int mptspiInternalCtx = -1; /* Used only for internal commands */
98 * mptspi_setTargetNegoParms - Update the target negotiation parameters
99 * @hd: Pointer to a SCSI Host Structure
100 * @target: per target private data
103 * Update the target negotiation parameters based on the the Inquiry
104 * data, adapter capabilities, and NVRAM settings.
107 mptspi_setTargetNegoParms(MPT_SCSI_HOST *hd, VirtTarget *target,
108 struct scsi_device *sdev)
110 SpiCfgData *pspi_data = &hd->ioc->spi_data;
111 int id = (int) target->id;
113 u8 width = MPT_NARROW;
114 u8 factor = MPT_ASYNC;
119 target->negoFlags = pspi_data->noQas;
121 if (sdev->scsi_level < SCSI_2) {
124 offset = pspi_data->maxSyncOffset;
125 target->tflags &= ~MPT_TARGET_FLAGS_Q_YES;
127 if (scsi_device_wide(sdev))
130 if (scsi_device_sync(sdev)) {
131 factor = pspi_data->minSyncFactor;
132 if (!scsi_device_dt(sdev))
135 if (!scsi_device_ius(sdev) &&
136 !scsi_device_qas(sdev))
137 factor = MPT_ULTRA160;
139 factor = MPT_ULTRA320;
140 if (scsi_device_qas(sdev)) {
142 printk(KERN_DEBUG "Enabling QAS due to "
143 "byte56=%02x on id=%d!\n", scsi_device_qas(sdev), id));
146 if (sdev->type == TYPE_TAPE &&
147 scsi_device_ius(sdev))
148 target->negoFlags |= MPT_TAPE_NEGO_IDP;
151 offset = pspi_data->maxSyncOffset;
153 /* If RAID, never disable QAS
154 * else if non RAID, do not disable
155 * QAS if bit 1 is set
156 * bit 1 QAS support, non-raid only
159 if (target->raidVolume == 1)
167 if (!sdev->tagged_supported)
168 target->tflags &= ~MPT_TARGET_FLAGS_Q_YES;
170 /* Update tflags based on NVRAM settings. (SCSI only)
172 if (pspi_data->nvram && (pspi_data->nvram[id] != MPT_HOST_NVRAM_INVALID)) {
173 nvram = pspi_data->nvram[id];
174 nfactor = (nvram & MPT_NVRAM_SYNC_MASK) >> 8;
177 width = nvram & MPT_NVRAM_WIDE_DISABLE ? 0 : 1;
180 /* Ensure factor is set to the
181 * maximum of: adapter, nvram, inquiry
184 if (nfactor < pspi_data->minSyncFactor )
185 nfactor = pspi_data->minSyncFactor;
187 factor = max(factor, nfactor);
188 if (factor == MPT_ASYNC)
199 /* Make sure data is consistent
201 if ((!width) && (factor < MPT_ULTRA2))
204 /* Save the data to the target structure.
206 target->minSyncFactor = factor;
207 target->maxOffset = offset;
208 target->maxWidth = width;
210 target->tflags |= MPT_TARGET_FLAGS_VALID_NEGO;
212 /* Disable unused features.
215 target->negoFlags |= MPT_TARGET_NO_NEGO_WIDE;
218 target->negoFlags |= MPT_TARGET_NO_NEGO_SYNC;
220 if ( factor > MPT_ULTRA320 )
223 if (noQas && (pspi_data->noQas == 0)) {
224 pspi_data->noQas |= MPT_TARGET_NO_NEGO_QAS;
225 target->negoFlags |= MPT_TARGET_NO_NEGO_QAS;
227 /* Disable QAS in a mixed configuration case
230 ddvprintk(hd->ioc, printk(KERN_DEBUG
231 "Disabling QAS due to noQas=%02x on id=%d!\n", noQas, id));
236 * mptspi_writeIOCPage4 - write IOC Page 4
237 * @hd: Pointer to a SCSI Host Structure
238 * @channel: channel number
239 * @id: write IOC Page4 for this ID & Bus
241 * Return: -EAGAIN if unable to obtain a Message Frame
244 * Remark: We do not wait for a return, write pages sequentially.
247 mptspi_writeIOCPage4(MPT_SCSI_HOST *hd, u8 channel , u8 id)
249 MPT_ADAPTER *ioc = hd->ioc;
251 IOCPage4_t *IOCPage4Ptr;
259 /* Get a MF for this command.
261 if ((mf = mpt_get_msg_frame(ioc->DoneCtx, ioc)) == NULL) {
262 dfailprintk(ioc, printk(MYIOC_s_WARN_FMT
263 "writeIOCPage4 : no msg frames!\n",ioc->name));
267 /* Set the request and the data pointers.
268 * Place data at end of MF.
270 pReq = (Config_t *)mf;
272 req_idx = le16_to_cpu(mf->u.frame.hwhdr.msgctxu.fld.req_idx);
273 frameOffset = ioc->req_sz - sizeof(IOCPage4_t);
275 /* Complete the request frame (same for all requests).
277 pReq->Action = MPI_CONFIG_ACTION_PAGE_WRITE_CURRENT;
279 pReq->ChainOffset = 0;
280 pReq->Function = MPI_FUNCTION_CONFIG;
281 pReq->ExtPageLength = 0;
282 pReq->ExtPageType = 0;
284 for (ii=0; ii < 8; ii++) {
285 pReq->Reserved2[ii] = 0;
288 IOCPage4Ptr = ioc->spi_data.pIocPg4;
289 dataDma = ioc->spi_data.IocPg4_dma;
290 ii = IOCPage4Ptr->ActiveSEP++;
291 IOCPage4Ptr->SEP[ii].SEPTargetID = id;
292 IOCPage4Ptr->SEP[ii].SEPBus = channel;
293 pReq->Header = IOCPage4Ptr->Header;
294 pReq->PageAddress = cpu_to_le32(id | (channel << 8 ));
296 /* Add a SGE to the config request.
298 flagsLength = MPT_SGE_FLAGS_SSIMPLE_WRITE |
299 (IOCPage4Ptr->Header.PageLength + ii) * 4;
301 mpt_add_sge((char *)&pReq->PageBufferSGE, flagsLength, dataDma);
303 ddvprintk(ioc, printk(MYIOC_s_DEBUG_FMT
304 "writeIOCPage4: MaxSEP=%d ActiveSEP=%d id=%d bus=%d\n",
305 ioc->name, IOCPage4Ptr->MaxSEP, IOCPage4Ptr->ActiveSEP, id, channel));
307 mpt_put_msg_frame(ioc->DoneCtx, ioc, mf);
313 * mptspi_initTarget - Target, LUN alloc/free functionality.
314 * @hd: Pointer to MPT_SCSI_HOST structure
315 * @vtarget: per target private data
318 * NOTE: It's only SAFE to call this routine if data points to
319 * sane & valid STANDARD INQUIRY data!
321 * Allocate and initialize memory for this target.
326 mptspi_initTarget(MPT_SCSI_HOST *hd, VirtTarget *vtarget,
327 struct scsi_device *sdev)
330 /* Is LUN supported? If so, upper 2 bits will be 0
331 * in first byte of inquiry data.
333 if (sdev->inq_periph_qual != 0)
339 vtarget->type = sdev->type;
341 if ((sdev->type == TYPE_PROCESSOR) && (hd->ioc->spi_data.Saf_Te)) {
342 /* Treat all Processors as SAF-TE if
343 * command line option is set */
344 vtarget->tflags |= MPT_TARGET_FLAGS_SAF_TE_ISSUED;
345 mptspi_writeIOCPage4(hd, vtarget->channel, vtarget->id);
346 }else if ((sdev->type == TYPE_PROCESSOR) &&
347 !(vtarget->tflags & MPT_TARGET_FLAGS_SAF_TE_ISSUED )) {
348 if (sdev->inquiry_len > 49 ) {
349 if (sdev->inquiry[44] == 'S' &&
350 sdev->inquiry[45] == 'A' &&
351 sdev->inquiry[46] == 'F' &&
352 sdev->inquiry[47] == '-' &&
353 sdev->inquiry[48] == 'T' &&
354 sdev->inquiry[49] == 'E' ) {
355 vtarget->tflags |= MPT_TARGET_FLAGS_SAF_TE_ISSUED;
356 mptspi_writeIOCPage4(hd, vtarget->channel, vtarget->id);
360 mptspi_setTargetNegoParms(hd, vtarget, sdev);
364 * mptspi_is_raid - Determines whether target is belonging to volume
365 * @hd: Pointer to a SCSI HOST structure
366 * @id: target device id
374 mptspi_is_raid(struct _MPT_SCSI_HOST *hd, u32 id)
378 if (!hd->ioc->raid_data.pIocPg2)
381 if (!hd->ioc->raid_data.pIocPg2->NumActiveVolumes)
383 for (i=0; i < hd->ioc->raid_data.pIocPg2->NumActiveVolumes; i++) {
384 if (hd->ioc->raid_data.pIocPg2->RaidVolume[i].VolumeID == id) {
394 static int mptspi_target_alloc(struct scsi_target *starget)
396 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
397 struct _MPT_SCSI_HOST *hd = (struct _MPT_SCSI_HOST *)shost->hostdata;
403 vtarget = kzalloc(sizeof(VirtTarget), GFP_KERNEL);
407 vtarget->ioc_id = hd->ioc->id;
408 vtarget->tflags = MPT_TARGET_FLAGS_Q_YES;
409 vtarget->id = (u8)starget->id;
410 vtarget->channel = (u8)starget->channel;
411 vtarget->starget = starget;
412 starget->hostdata = vtarget;
414 if (starget->channel == 1) {
415 if (mptscsih_is_phys_disk(hd->ioc, 0, starget->id) == 0)
417 vtarget->tflags |= MPT_TARGET_FLAGS_RAID_COMPONENT;
418 /* The real channel for this device is zero */
419 vtarget->channel = 0;
420 /* The actual physdisknum (for RAID passthrough) */
421 vtarget->id = mptscsih_raid_id_to_num(hd->ioc, 0,
425 if (starget->channel == 0 &&
426 mptspi_is_raid(hd, starget->id)) {
427 vtarget->raidVolume = 1;
428 ddvprintk(hd->ioc, printk(KERN_DEBUG
429 "RAID Volume @ channel=%d id=%d\n", starget->channel,
433 if (hd->ioc->spi_data.nvram &&
434 hd->ioc->spi_data.nvram[starget->id] != MPT_HOST_NVRAM_INVALID) {
435 u32 nvram = hd->ioc->spi_data.nvram[starget->id];
436 spi_min_period(starget) = (nvram & MPT_NVRAM_SYNC_MASK) >> MPT_NVRAM_SYNC_SHIFT;
437 spi_max_width(starget) = nvram & MPT_NVRAM_WIDE_DISABLE ? 0 : 1;
439 spi_min_period(starget) = hd->ioc->spi_data.minSyncFactor;
440 spi_max_width(starget) = hd->ioc->spi_data.maxBusWidth;
442 spi_max_offset(starget) = hd->ioc->spi_data.maxSyncOffset;
444 spi_offset(starget) = 0;
445 mptspi_write_width(starget, 0);
451 mptspi_target_destroy(struct scsi_target *starget)
453 if (starget->hostdata)
454 kfree(starget->hostdata);
455 starget->hostdata = NULL;
459 * mptspi_print_write_nego - negotiation parameters debug info that is being sent
460 * @hd: Pointer to a SCSI HOST structure
461 * @starget: SCSI target
462 * @ii: negotiation parameters
466 mptspi_print_write_nego(struct _MPT_SCSI_HOST *hd, struct scsi_target *starget, u32 ii)
468 ddvprintk(hd->ioc, printk(MYIOC_s_DEBUG_FMT "id=%d Requested = 0x%08x"
469 " ( %s factor = 0x%02x @ offset = 0x%02x %s%s%s%s%s%s%s%s)\n",
470 hd->ioc->name, starget->id, ii,
471 ii & MPI_SCSIDEVPAGE0_NP_WIDE ? "Wide ": "",
472 ((ii >> 8) & 0xFF), ((ii >> 16) & 0xFF),
473 ii & MPI_SCSIDEVPAGE0_NP_IU ? "IU ": "",
474 ii & MPI_SCSIDEVPAGE0_NP_DT ? "DT ": "",
475 ii & MPI_SCSIDEVPAGE0_NP_QAS ? "QAS ": "",
476 ii & MPI_SCSIDEVPAGE0_NP_HOLD_MCS ? "HOLDMCS ": "",
477 ii & MPI_SCSIDEVPAGE0_NP_WR_FLOW ? "WRFLOW ": "",
478 ii & MPI_SCSIDEVPAGE0_NP_RD_STRM ? "RDSTRM ": "",
479 ii & MPI_SCSIDEVPAGE0_NP_RTI ? "RTI ": "",
480 ii & MPI_SCSIDEVPAGE0_NP_PCOMP_EN ? "PCOMP ": ""));
484 * mptspi_print_read_nego - negotiation parameters debug info that is being read
485 * @hd: Pointer to a SCSI HOST structure
486 * @starget: SCSI target
487 * @ii: negotiation parameters
491 mptspi_print_read_nego(struct _MPT_SCSI_HOST *hd, struct scsi_target *starget, u32 ii)
493 ddvprintk(hd->ioc, printk(MYIOC_s_DEBUG_FMT "id=%d Read = 0x%08x"
494 " ( %s factor = 0x%02x @ offset = 0x%02x %s%s%s%s%s%s%s%s)\n",
495 hd->ioc->name, starget->id, ii,
496 ii & MPI_SCSIDEVPAGE0_NP_WIDE ? "Wide ": "",
497 ((ii >> 8) & 0xFF), ((ii >> 16) & 0xFF),
498 ii & MPI_SCSIDEVPAGE0_NP_IU ? "IU ": "",
499 ii & MPI_SCSIDEVPAGE0_NP_DT ? "DT ": "",
500 ii & MPI_SCSIDEVPAGE0_NP_QAS ? "QAS ": "",
501 ii & MPI_SCSIDEVPAGE0_NP_HOLD_MCS ? "HOLDMCS ": "",
502 ii & MPI_SCSIDEVPAGE0_NP_WR_FLOW ? "WRFLOW ": "",
503 ii & MPI_SCSIDEVPAGE0_NP_RD_STRM ? "RDSTRM ": "",
504 ii & MPI_SCSIDEVPAGE0_NP_RTI ? "RTI ": "",
505 ii & MPI_SCSIDEVPAGE0_NP_PCOMP_EN ? "PCOMP ": ""));
508 static int mptspi_read_spi_device_pg0(struct scsi_target *starget,
509 struct _CONFIG_PAGE_SCSI_DEVICE_0 *pass_pg0)
511 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
512 struct _MPT_SCSI_HOST *hd = (struct _MPT_SCSI_HOST *)shost->hostdata;
513 struct _MPT_ADAPTER *ioc = hd->ioc;
514 struct _CONFIG_PAGE_SCSI_DEVICE_0 *pg0;
517 struct _x_config_parms cfg;
518 struct _CONFIG_PAGE_HEADER hdr;
521 /* No SPI parameters for RAID devices */
522 if (starget->channel == 0 &&
523 mptspi_is_raid(hd, starget->id))
526 size = ioc->spi_data.sdp0length * 4;
528 if (ioc->spi_data.sdp0length & 1)
533 pg0 = dma_alloc_coherent(&ioc->pcidev->dev, size, &pg0_dma, GFP_KERNEL);
535 starget_printk(KERN_ERR, starget, "dma_alloc_coherent for parameters failed\n");
539 memset(&hdr, 0, sizeof(hdr));
541 hdr.PageVersion = ioc->spi_data.sdp0version;
542 hdr.PageLength = ioc->spi_data.sdp0length;
544 hdr.PageType = MPI_CONFIG_PAGETYPE_SCSI_DEVICE;
546 memset(&cfg, 0, sizeof(cfg));
548 cfg.cfghdr.hdr = &hdr;
549 cfg.physAddr = pg0_dma;
550 cfg.action = MPI_CONFIG_ACTION_PAGE_READ_CURRENT;
552 cfg.pageAddr = starget->id;
554 if (mpt_config(ioc, &cfg)) {
555 starget_printk(KERN_ERR, starget, "mpt_config failed\n");
559 memcpy(pass_pg0, pg0, size);
561 mptspi_print_read_nego(hd, starget, le32_to_cpu(pg0->NegotiatedParameters));
564 dma_free_coherent(&ioc->pcidev->dev, size, pg0, pg0_dma);
568 static u32 mptspi_getRP(struct scsi_target *starget)
572 nego |= spi_iu(starget) ? MPI_SCSIDEVPAGE1_RP_IU : 0;
573 nego |= spi_dt(starget) ? MPI_SCSIDEVPAGE1_RP_DT : 0;
574 nego |= spi_qas(starget) ? MPI_SCSIDEVPAGE1_RP_QAS : 0;
575 nego |= spi_hold_mcs(starget) ? MPI_SCSIDEVPAGE1_RP_HOLD_MCS : 0;
576 nego |= spi_wr_flow(starget) ? MPI_SCSIDEVPAGE1_RP_WR_FLOW : 0;
577 nego |= spi_rd_strm(starget) ? MPI_SCSIDEVPAGE1_RP_RD_STRM : 0;
578 nego |= spi_rti(starget) ? MPI_SCSIDEVPAGE1_RP_RTI : 0;
579 nego |= spi_pcomp_en(starget) ? MPI_SCSIDEVPAGE1_RP_PCOMP_EN : 0;
581 nego |= (spi_period(starget) << MPI_SCSIDEVPAGE1_RP_SHIFT_MIN_SYNC_PERIOD) & MPI_SCSIDEVPAGE1_RP_MIN_SYNC_PERIOD_MASK;
582 nego |= (spi_offset(starget) << MPI_SCSIDEVPAGE1_RP_SHIFT_MAX_SYNC_OFFSET) & MPI_SCSIDEVPAGE1_RP_MAX_SYNC_OFFSET_MASK;
583 nego |= spi_width(starget) ? MPI_SCSIDEVPAGE1_RP_WIDE : 0;
588 static void mptspi_read_parameters(struct scsi_target *starget)
591 struct _CONFIG_PAGE_SCSI_DEVICE_0 pg0;
593 mptspi_read_spi_device_pg0(starget, &pg0);
595 nego = le32_to_cpu(pg0.NegotiatedParameters);
597 spi_iu(starget) = (nego & MPI_SCSIDEVPAGE0_NP_IU) ? 1 : 0;
598 spi_dt(starget) = (nego & MPI_SCSIDEVPAGE0_NP_DT) ? 1 : 0;
599 spi_qas(starget) = (nego & MPI_SCSIDEVPAGE0_NP_QAS) ? 1 : 0;
600 spi_wr_flow(starget) = (nego & MPI_SCSIDEVPAGE0_NP_WR_FLOW) ? 1 : 0;
601 spi_rd_strm(starget) = (nego & MPI_SCSIDEVPAGE0_NP_RD_STRM) ? 1 : 0;
602 spi_rti(starget) = (nego & MPI_SCSIDEVPAGE0_NP_RTI) ? 1 : 0;
603 spi_pcomp_en(starget) = (nego & MPI_SCSIDEVPAGE0_NP_PCOMP_EN) ? 1 : 0;
604 spi_hold_mcs(starget) = (nego & MPI_SCSIDEVPAGE0_NP_HOLD_MCS) ? 1 : 0;
605 spi_period(starget) = (nego & MPI_SCSIDEVPAGE0_NP_NEG_SYNC_PERIOD_MASK) >> MPI_SCSIDEVPAGE0_NP_SHIFT_SYNC_PERIOD;
606 spi_offset(starget) = (nego & MPI_SCSIDEVPAGE0_NP_NEG_SYNC_OFFSET_MASK) >> MPI_SCSIDEVPAGE0_NP_SHIFT_SYNC_OFFSET;
607 spi_width(starget) = (nego & MPI_SCSIDEVPAGE0_NP_WIDE) ? 1 : 0;
611 mptscsih_quiesce_raid(MPT_SCSI_HOST *hd, int quiesce, u8 channel, u8 id)
613 MpiRaidActionRequest_t *pReq;
616 /* Get and Populate a free Frame
618 if ((mf = mpt_get_msg_frame(hd->ioc->InternalCtx, hd->ioc)) == NULL) {
619 ddvprintk(hd->ioc, printk(MYIOC_s_WARN_FMT "_do_raid: no msg frames!\n",
623 pReq = (MpiRaidActionRequest_t *)mf;
625 pReq->Action = MPI_RAID_ACTION_QUIESCE_PHYS_IO;
627 pReq->Action = MPI_RAID_ACTION_ENABLE_PHYS_IO;
629 pReq->ChainOffset = 0;
630 pReq->Function = MPI_FUNCTION_RAID_ACTION;
632 pReq->VolumeBus = channel;
633 pReq->PhysDiskNum = 0;
636 pReq->ActionDataWord = 0; /* Reserved for this action */
638 mpt_add_sge((char *)&pReq->ActionDataSGE,
639 MPT_SGE_FLAGS_SSIMPLE_READ | 0, (dma_addr_t) -1);
641 ddvprintk(hd->ioc, printk(MYIOC_s_DEBUG_FMT "RAID Volume action=%x channel=%d id=%d\n",
642 hd->ioc->name, pReq->Action, channel, id));
645 hd->timer.expires = jiffies + HZ*10; /* 10 second timeout */
646 hd->scandv_wait_done = 0;
648 /* Save cmd pointer, for resource free if timeout or
653 add_timer(&hd->timer);
654 mpt_put_msg_frame(hd->ioc->InternalCtx, hd->ioc, mf);
655 wait_event(hd->scandv_waitq, hd->scandv_wait_done);
657 if ((hd->pLocal == NULL) || (hd->pLocal->completion != 0))
663 static void mptspi_dv_device(struct _MPT_SCSI_HOST *hd,
664 struct scsi_device *sdev)
666 VirtTarget *vtarget = scsi_target(sdev)->hostdata;
668 /* no DV on RAID devices */
669 if (sdev->channel == 0 &&
670 mptspi_is_raid(hd, sdev->id))
673 /* If this is a piece of a RAID, then quiesce first */
674 if (sdev->channel == 1 &&
675 mptscsih_quiesce_raid(hd, 1, vtarget->channel, vtarget->id) < 0) {
676 starget_printk(KERN_ERR, scsi_target(sdev),
677 "Integrated RAID quiesce failed\n");
681 hd->spi_pending |= (1 << sdev->id);
683 hd->spi_pending &= ~(1 << sdev->id);
685 if (sdev->channel == 1 &&
686 mptscsih_quiesce_raid(hd, 0, vtarget->channel, vtarget->id) < 0)
687 starget_printk(KERN_ERR, scsi_target(sdev),
688 "Integrated RAID resume failed\n");
690 mptspi_read_parameters(sdev->sdev_target);
691 spi_display_xfer_agreement(sdev->sdev_target);
692 mptspi_read_parameters(sdev->sdev_target);
695 static int mptspi_slave_alloc(struct scsi_device *sdev)
697 MPT_SCSI_HOST *hd = (MPT_SCSI_HOST *)sdev->host->hostdata;
700 struct scsi_target *starget;
702 if (sdev->channel == 1 &&
703 mptscsih_is_phys_disk(hd->ioc, 0, sdev->id) == 0)
706 vdev = kzalloc(sizeof(VirtDevice), GFP_KERNEL);
708 printk(MYIOC_s_ERR_FMT "slave_alloc kmalloc(%zd) FAILED!\n",
709 hd->ioc->name, sizeof(VirtDevice));
713 vdev->lun = sdev->lun;
714 sdev->hostdata = vdev;
716 starget = scsi_target(sdev);
717 vtarget = starget->hostdata;
718 vdev->vtarget = vtarget;
721 if (sdev->channel == 1)
722 sdev->no_uld_attach = 1;
727 static int mptspi_slave_configure(struct scsi_device *sdev)
729 struct _MPT_SCSI_HOST *hd =
730 (struct _MPT_SCSI_HOST *)sdev->host->hostdata;
731 VirtTarget *vtarget = scsi_target(sdev)->hostdata;
734 mptspi_initTarget(hd, vtarget, sdev);
736 ret = mptscsih_slave_configure(sdev);
741 ddvprintk(hd->ioc, printk(MYIOC_s_DEBUG_FMT "id=%d min_period=0x%02x"
742 " max_offset=0x%02x max_width=%d\n", hd->ioc->name,
743 sdev->id, spi_min_period(scsi_target(sdev)),
744 spi_max_offset(scsi_target(sdev)),
745 spi_max_width(scsi_target(sdev))));
747 if ((sdev->channel == 1 ||
748 !(mptspi_is_raid(hd, sdev->id))) &&
749 !spi_initial_dv(sdev->sdev_target))
750 mptspi_dv_device(hd, sdev);
756 mptspi_qcmd(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *))
758 struct _MPT_SCSI_HOST *hd = (MPT_SCSI_HOST *) SCpnt->device->host->hostdata;
759 VirtDevice *vdev = SCpnt->device->hostdata;
761 if (!vdev || !vdev->vtarget) {
762 SCpnt->result = DID_NO_CONNECT << 16;
767 if (SCpnt->device->channel == 1 &&
768 mptscsih_is_phys_disk(hd->ioc, 0, SCpnt->device->id) == 0) {
769 SCpnt->result = DID_NO_CONNECT << 16;
774 if (spi_dv_pending(scsi_target(SCpnt->device)))
775 ddvprintk(hd->ioc, scsi_print_command(SCpnt));
777 return mptscsih_qcmd(SCpnt,done);
780 static void mptspi_slave_destroy(struct scsi_device *sdev)
782 struct scsi_target *starget = scsi_target(sdev);
783 VirtTarget *vtarget = starget->hostdata;
784 VirtDevice *vdevice = sdev->hostdata;
786 /* Will this be the last lun on a non-raid device? */
787 if (vtarget->num_luns == 1 && vdevice->configured_lun) {
788 struct _CONFIG_PAGE_SCSI_DEVICE_1 pg1;
791 pg1.RequestedParameters = 0;
793 pg1.Configuration = 0;
795 mptspi_write_spi_device_pg1(starget, &pg1);
798 mptscsih_slave_destroy(sdev);
801 static struct scsi_host_template mptspi_driver_template = {
802 .module = THIS_MODULE,
803 .proc_name = "mptspi",
804 .proc_info = mptscsih_proc_info,
805 .name = "MPT SPI Host",
806 .info = mptscsih_info,
807 .queuecommand = mptspi_qcmd,
808 .target_alloc = mptspi_target_alloc,
809 .slave_alloc = mptspi_slave_alloc,
810 .slave_configure = mptspi_slave_configure,
811 .target_destroy = mptspi_target_destroy,
812 .slave_destroy = mptspi_slave_destroy,
813 .change_queue_depth = mptscsih_change_queue_depth,
814 .eh_abort_handler = mptscsih_abort,
815 .eh_device_reset_handler = mptscsih_dev_reset,
816 .eh_bus_reset_handler = mptscsih_bus_reset,
817 .eh_host_reset_handler = mptscsih_host_reset,
818 .bios_param = mptscsih_bios_param,
819 .can_queue = MPT_SCSI_CAN_QUEUE,
821 .sg_tablesize = MPT_SCSI_SG_DEPTH,
824 .use_clustering = ENABLE_CLUSTERING,
825 .shost_attrs = mptscsih_host_attrs,
828 static int mptspi_write_spi_device_pg1(struct scsi_target *starget,
829 struct _CONFIG_PAGE_SCSI_DEVICE_1 *pass_pg1)
831 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
832 struct _MPT_SCSI_HOST *hd = (struct _MPT_SCSI_HOST *)shost->hostdata;
833 struct _MPT_ADAPTER *ioc = hd->ioc;
834 struct _CONFIG_PAGE_SCSI_DEVICE_1 *pg1;
837 struct _x_config_parms cfg;
838 struct _CONFIG_PAGE_HEADER hdr;
841 /* don't allow updating nego parameters on RAID devices */
842 if (starget->channel == 0 &&
843 mptspi_is_raid(hd, starget->id))
846 size = ioc->spi_data.sdp1length * 4;
848 pg1 = dma_alloc_coherent(&ioc->pcidev->dev, size, &pg1_dma, GFP_KERNEL);
850 starget_printk(KERN_ERR, starget, "dma_alloc_coherent for parameters failed\n");
854 memset(&hdr, 0, sizeof(hdr));
856 hdr.PageVersion = ioc->spi_data.sdp1version;
857 hdr.PageLength = ioc->spi_data.sdp1length;
859 hdr.PageType = MPI_CONFIG_PAGETYPE_SCSI_DEVICE;
861 memset(&cfg, 0, sizeof(cfg));
863 cfg.cfghdr.hdr = &hdr;
864 cfg.physAddr = pg1_dma;
865 cfg.action = MPI_CONFIG_ACTION_PAGE_WRITE_CURRENT;
867 cfg.pageAddr = starget->id;
869 memcpy(pg1, pass_pg1, size);
871 pg1->Header.PageVersion = hdr.PageVersion;
872 pg1->Header.PageLength = hdr.PageLength;
873 pg1->Header.PageNumber = hdr.PageNumber;
874 pg1->Header.PageType = hdr.PageType;
876 mptspi_print_write_nego(hd, starget, le32_to_cpu(pg1->RequestedParameters));
878 if (mpt_config(ioc, &cfg)) {
879 starget_printk(KERN_ERR, starget, "mpt_config failed\n");
885 dma_free_coherent(&ioc->pcidev->dev, size, pg1, pg1_dma);
889 static void mptspi_write_offset(struct scsi_target *starget, int offset)
891 struct _CONFIG_PAGE_SCSI_DEVICE_1 pg1;
900 if (spi_offset(starget) == -1)
901 mptspi_read_parameters(starget);
903 spi_offset(starget) = offset;
905 nego = mptspi_getRP(starget);
907 pg1.RequestedParameters = cpu_to_le32(nego);
909 pg1.Configuration = 0;
911 mptspi_write_spi_device_pg1(starget, &pg1);
914 static void mptspi_write_period(struct scsi_target *starget, int period)
916 struct _CONFIG_PAGE_SCSI_DEVICE_1 pg1;
925 if (spi_period(starget) == -1)
926 mptspi_read_parameters(starget);
931 } else if (period == 9) {
935 spi_period(starget) = period;
937 nego = mptspi_getRP(starget);
939 pg1.RequestedParameters = cpu_to_le32(nego);
941 pg1.Configuration = 0;
943 mptspi_write_spi_device_pg1(starget, &pg1);
946 static void mptspi_write_dt(struct scsi_target *starget, int dt)
948 struct _CONFIG_PAGE_SCSI_DEVICE_1 pg1;
951 if (spi_period(starget) == -1)
952 mptspi_read_parameters(starget);
954 if (!dt && spi_period(starget) < 10)
955 spi_period(starget) = 10;
957 spi_dt(starget) = dt;
959 nego = mptspi_getRP(starget);
962 pg1.RequestedParameters = cpu_to_le32(nego);
964 pg1.Configuration = 0;
966 mptspi_write_spi_device_pg1(starget, &pg1);
969 static void mptspi_write_iu(struct scsi_target *starget, int iu)
971 struct _CONFIG_PAGE_SCSI_DEVICE_1 pg1;
974 if (spi_period(starget) == -1)
975 mptspi_read_parameters(starget);
977 if (!iu && spi_period(starget) < 9)
978 spi_period(starget) = 9;
980 spi_iu(starget) = iu;
982 nego = mptspi_getRP(starget);
984 pg1.RequestedParameters = cpu_to_le32(nego);
986 pg1.Configuration = 0;
988 mptspi_write_spi_device_pg1(starget, &pg1);
991 #define MPTSPI_SIMPLE_TRANSPORT_PARM(parm) \
992 static void mptspi_write_##parm(struct scsi_target *starget, int parm)\
994 struct _CONFIG_PAGE_SCSI_DEVICE_1 pg1; \
997 spi_##parm(starget) = parm; \
999 nego = mptspi_getRP(starget); \
1001 pg1.RequestedParameters = cpu_to_le32(nego); \
1003 pg1.Configuration = 0; \
1005 mptspi_write_spi_device_pg1(starget, &pg1); \
1008 MPTSPI_SIMPLE_TRANSPORT_PARM(rd_strm)
1009 MPTSPI_SIMPLE_TRANSPORT_PARM(wr_flow)
1010 MPTSPI_SIMPLE_TRANSPORT_PARM(rti)
1011 MPTSPI_SIMPLE_TRANSPORT_PARM(hold_mcs)
1012 MPTSPI_SIMPLE_TRANSPORT_PARM(pcomp_en)
1014 static void mptspi_write_qas(struct scsi_target *starget, int qas)
1016 struct _CONFIG_PAGE_SCSI_DEVICE_1 pg1;
1017 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
1018 struct _MPT_SCSI_HOST *hd = (struct _MPT_SCSI_HOST *)shost->hostdata;
1019 VirtTarget *vtarget = starget->hostdata;
1022 if ((vtarget->negoFlags & MPT_TARGET_NO_NEGO_QAS) ||
1023 hd->ioc->spi_data.noQas)
1024 spi_qas(starget) = 0;
1026 spi_qas(starget) = qas;
1028 nego = mptspi_getRP(starget);
1030 pg1.RequestedParameters = cpu_to_le32(nego);
1032 pg1.Configuration = 0;
1034 mptspi_write_spi_device_pg1(starget, &pg1);
1037 static void mptspi_write_width(struct scsi_target *starget, int width)
1039 struct _CONFIG_PAGE_SCSI_DEVICE_1 pg1;
1043 spi_dt(starget) = 0;
1044 if (spi_period(starget) < 10)
1045 spi_period(starget) = 10;
1048 spi_width(starget) = width;
1050 nego = mptspi_getRP(starget);
1052 pg1.RequestedParameters = cpu_to_le32(nego);
1054 pg1.Configuration = 0;
1056 mptspi_write_spi_device_pg1(starget, &pg1);
1059 struct work_queue_wrapper {
1060 struct work_struct work;
1061 struct _MPT_SCSI_HOST *hd;
1065 static void mpt_work_wrapper(struct work_struct *work)
1067 struct work_queue_wrapper *wqw =
1068 container_of(work, struct work_queue_wrapper, work);
1069 struct _MPT_SCSI_HOST *hd = wqw->hd;
1070 struct Scsi_Host *shost = hd->ioc->sh;
1071 struct scsi_device *sdev;
1072 int disk = wqw->disk;
1073 struct _CONFIG_PAGE_IOC_3 *pg3;
1077 mpt_findImVolumes(hd->ioc);
1078 pg3 = hd->ioc->raid_data.pIocPg3;
1082 shost_for_each_device(sdev,shost) {
1083 struct scsi_target *starget = scsi_target(sdev);
1084 VirtTarget *vtarget = starget->hostdata;
1086 /* only want to search RAID components */
1087 if (sdev->channel != 1)
1090 /* The id is the raid PhysDiskNum, even if
1091 * starget->id is the actual target address */
1092 if(vtarget->id != disk)
1095 starget_printk(KERN_INFO, vtarget->starget,
1096 "Integrated RAID requests DV of new device\n");
1097 mptspi_dv_device(hd, sdev);
1099 shost_printk(KERN_INFO, shost,
1100 "Integrated RAID detects new device %d\n", disk);
1101 scsi_scan_target(&hd->ioc->sh->shost_gendev, 1, disk, 0, 1);
1105 static void mpt_dv_raid(struct _MPT_SCSI_HOST *hd, int disk)
1107 struct work_queue_wrapper *wqw = kmalloc(sizeof(*wqw), GFP_ATOMIC);
1110 shost_printk(KERN_ERR, hd->ioc->sh,
1111 "Failed to act on RAID event for physical disk %d\n",
1115 INIT_WORK(&wqw->work, mpt_work_wrapper);
1119 schedule_work(&wqw->work);
1123 mptspi_event_process(MPT_ADAPTER *ioc, EventNotificationReply_t *pEvReply)
1125 u8 event = le32_to_cpu(pEvReply->Event) & 0xFF;
1126 struct _MPT_SCSI_HOST *hd = (struct _MPT_SCSI_HOST *)ioc->sh->hostdata;
1128 if (hd && event == MPI_EVENT_INTEGRATED_RAID) {
1130 = (le32_to_cpu(pEvReply->Data[0]) & 0x00FF0000) >> 16;
1132 if (reason == MPI_EVENT_RAID_RC_DOMAIN_VAL_NEEDED) {
1133 int disk = (le32_to_cpu(pEvReply->Data[0]) & 0xFF000000) >> 24;
1134 mpt_dv_raid(hd, disk);
1137 return mptscsih_event_process(ioc, pEvReply);
1141 mptspi_deny_binding(struct scsi_target *starget)
1143 struct _MPT_SCSI_HOST *hd =
1144 (struct _MPT_SCSI_HOST *)dev_to_shost(starget->dev.parent)->hostdata;
1145 return ((mptspi_is_raid(hd, starget->id)) &&
1146 starget->channel == 0) ? 1 : 0;
1149 static struct spi_function_template mptspi_transport_functions = {
1150 .get_offset = mptspi_read_parameters,
1151 .set_offset = mptspi_write_offset,
1153 .get_period = mptspi_read_parameters,
1154 .set_period = mptspi_write_period,
1156 .get_width = mptspi_read_parameters,
1157 .set_width = mptspi_write_width,
1159 .get_iu = mptspi_read_parameters,
1160 .set_iu = mptspi_write_iu,
1162 .get_dt = mptspi_read_parameters,
1163 .set_dt = mptspi_write_dt,
1165 .get_qas = mptspi_read_parameters,
1166 .set_qas = mptspi_write_qas,
1168 .get_wr_flow = mptspi_read_parameters,
1169 .set_wr_flow = mptspi_write_wr_flow,
1171 .get_rd_strm = mptspi_read_parameters,
1172 .set_rd_strm = mptspi_write_rd_strm,
1174 .get_rti = mptspi_read_parameters,
1175 .set_rti = mptspi_write_rti,
1177 .get_pcomp_en = mptspi_read_parameters,
1178 .set_pcomp_en = mptspi_write_pcomp_en,
1180 .get_hold_mcs = mptspi_read_parameters,
1181 .set_hold_mcs = mptspi_write_hold_mcs,
1183 .deny_binding = mptspi_deny_binding,
1186 /****************************************************************************
1187 * Supported hardware
1190 static struct pci_device_id mptspi_pci_table[] = {
1191 { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVID_53C1030,
1192 PCI_ANY_ID, PCI_ANY_ID },
1193 { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVID_53C1035,
1194 PCI_ANY_ID, PCI_ANY_ID },
1195 {0} /* Terminating entry */
1197 MODULE_DEVICE_TABLE(pci, mptspi_pci_table);
1201 * renegotiate for a given target
1204 mptspi_dv_renegotiate_work(struct work_struct *work)
1206 struct work_queue_wrapper *wqw =
1207 container_of(work, struct work_queue_wrapper, work);
1208 struct _MPT_SCSI_HOST *hd = wqw->hd;
1209 struct scsi_device *sdev;
1210 struct scsi_target *starget;
1211 struct _CONFIG_PAGE_SCSI_DEVICE_1 pg1;
1216 if (hd->spi_pending) {
1217 shost_for_each_device(sdev, hd->ioc->sh) {
1218 if (hd->spi_pending & (1 << sdev->id))
1220 starget = scsi_target(sdev);
1221 nego = mptspi_getRP(starget);
1222 pg1.RequestedParameters = cpu_to_le32(nego);
1224 pg1.Configuration = 0;
1225 mptspi_write_spi_device_pg1(starget, &pg1);
1228 shost_for_each_device(sdev, hd->ioc->sh)
1229 mptspi_dv_device(hd, sdev);
1234 mptspi_dv_renegotiate(struct _MPT_SCSI_HOST *hd)
1236 struct work_queue_wrapper *wqw = kmalloc(sizeof(*wqw), GFP_ATOMIC);
1241 INIT_WORK(&wqw->work, mptspi_dv_renegotiate_work);
1244 schedule_work(&wqw->work);
1248 * spi module reset handler
1251 mptspi_ioc_reset(MPT_ADAPTER *ioc, int reset_phase)
1253 struct _MPT_SCSI_HOST *hd = (struct _MPT_SCSI_HOST *)ioc->sh->hostdata;
1256 rc = mptscsih_ioc_reset(ioc, reset_phase);
1258 if (reset_phase == MPT_IOC_POST_RESET)
1259 mptspi_dv_renegotiate(hd);
1266 * spi module resume handler
1269 mptspi_resume(struct pci_dev *pdev)
1271 MPT_ADAPTER *ioc = pci_get_drvdata(pdev);
1272 struct _MPT_SCSI_HOST *hd = (struct _MPT_SCSI_HOST *)ioc->sh->hostdata;
1275 rc = mptscsih_resume(pdev);
1276 mptspi_dv_renegotiate(hd);
1282 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1283 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1285 * mptspi_probe - Installs scsi devices per bus.
1286 * @pdev: Pointer to pci_dev structure
1288 * Returns 0 for success, non-zero for failure.
1292 mptspi_probe(struct pci_dev *pdev, const struct pci_device_id *id)
1294 struct Scsi_Host *sh;
1297 unsigned long flags;
1305 if ((r = mpt_attach(pdev,id)) != 0)
1308 ioc = pci_get_drvdata(pdev);
1309 ioc->DoneCtx = mptspiDoneCtx;
1310 ioc->TaskCtx = mptspiTaskCtx;
1311 ioc->InternalCtx = mptspiInternalCtx;
1313 /* Added sanity check on readiness of the MPT adapter.
1315 if (ioc->last_state != MPI_IOC_STATE_OPERATIONAL) {
1316 printk(MYIOC_s_WARN_FMT
1317 "Skipping because it's not operational!\n",
1320 goto out_mptspi_probe;
1324 printk(MYIOC_s_WARN_FMT "Skipping because it's disabled!\n",
1327 goto out_mptspi_probe;
1330 /* Sanity check - ensure at least 1 port is INITIATOR capable
1333 for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) {
1334 if (ioc->pfacts[ii].ProtocolFlags &
1335 MPI_PORTFACTS_PROTOCOL_INITIATOR)
1340 printk(MYIOC_s_WARN_FMT
1341 "Skipping ioc=%p because SCSI Initiator mode is NOT enabled!\n",
1346 sh = scsi_host_alloc(&mptspi_driver_template, sizeof(MPT_SCSI_HOST));
1349 printk(MYIOC_s_WARN_FMT
1350 "Unable to register controller with SCSI subsystem\n",
1353 goto out_mptspi_probe;
1356 spin_lock_irqsave(&ioc->FreeQlock, flags);
1358 /* Attach the SCSI Host to the IOC structure
1366 /* set 16 byte cdb's */
1367 sh->max_cmd_len = 16;
1369 /* Yikes! This is important!
1370 * Otherwise, by default, linux
1371 * only scans target IDs 0-7!
1372 * pfactsN->MaxDevices unreliable
1373 * (not supported in early
1374 * versions of the FW).
1375 * max_id = 1 + actual max id,
1376 * max_lun = 1 + actual last lun,
1379 sh->max_id = ioc->devices_per_bus;
1381 sh->max_lun = MPT_LAST_LUN + 1;
1383 * If RAID Firmware Detected, setup virtual channel
1385 if (ioc->ir_firmware)
1386 sh->max_channel = 1;
1388 sh->max_channel = 0;
1389 sh->this_id = ioc->pfacts[0].PortSCSIID;
1393 sh->unique_id = ioc->id;
1395 /* Verify that we won't exceed the maximum
1396 * number of chain buffers
1397 * We can optimize: ZZ = req_sz/sizeof(SGE)
1399 * numSGE = 1 + (ZZ-1)*(maxChain -1) + ZZ
1400 * + (req_sz - 64)/sizeof(SGE)
1401 * A slightly different algorithm is required for
1404 scale = ioc->req_sz/(sizeof(dma_addr_t) + sizeof(u32));
1405 if (sizeof(dma_addr_t) == sizeof(u64)) {
1406 numSGE = (scale - 1) *
1407 (ioc->facts.MaxChainDepth-1) + scale +
1408 (ioc->req_sz - 60) / (sizeof(dma_addr_t) +
1411 numSGE = 1 + (scale - 1) *
1412 (ioc->facts.MaxChainDepth-1) + scale +
1413 (ioc->req_sz - 64) / (sizeof(dma_addr_t) +
1417 if (numSGE < sh->sg_tablesize) {
1418 /* Reset this value */
1419 dprintk(ioc, printk(MYIOC_s_INFO_FMT
1420 "Resetting sg_tablesize to %d from %d\n",
1421 ioc->name, numSGE, sh->sg_tablesize));
1422 sh->sg_tablesize = numSGE;
1425 spin_unlock_irqrestore(&ioc->FreeQlock, flags);
1427 hd = (MPT_SCSI_HOST *) sh->hostdata;
1430 /* SCSI needs scsi_cmnd lookup table!
1431 * (with size equal to req_depth*PtrSz!)
1433 hd->ScsiLookup = kcalloc(ioc->req_depth, sizeof(void *), GFP_ATOMIC);
1434 if (!hd->ScsiLookup) {
1436 goto out_mptspi_probe;
1439 dprintk(ioc, printk(MYIOC_s_DEBUG_FMT "ScsiLookup @ %p\n",
1440 ioc->name, hd->ScsiLookup));
1442 /* Clear the TM flags
1445 hd->tmState = TM_STATE_NONE;
1446 hd->resetPending = 0;
1447 hd->abortSCpnt = NULL;
1449 /* Clear the pointer used to store
1450 * single-threaded commands, i.e., those
1451 * issued during a bus scan, dv and
1452 * configuration pages.
1456 /* Initialize this SCSI Hosts' timers
1457 * To use, set the timer expires field
1460 init_timer(&hd->timer);
1461 hd->timer.data = (unsigned long) hd;
1462 hd->timer.function = mptscsih_timer_expired;
1464 ioc->spi_data.Saf_Te = mpt_saf_te;
1466 hd->negoNvram = MPT_SCSICFG_USE_NVRAM;
1467 ddvprintk(ioc, printk(MYIOC_s_DEBUG_FMT
1471 ioc->spi_data.noQas = 0;
1473 init_waitqueue_head(&hd->scandv_waitq);
1474 hd->scandv_wait_done = 0;
1475 hd->last_queue_full = 0;
1476 hd->spi_pending = 0;
1478 /* Some versions of the firmware don't support page 0; without
1479 * that we can't get the parameters */
1480 if (hd->ioc->spi_data.sdp0length != 0)
1481 sh->transportt = mptspi_transport_template;
1483 error = scsi_add_host (sh, &ioc->pcidev->dev);
1485 dprintk(ioc, printk(KERN_ERR MYNAM
1486 "scsi_add_host failed\n"));
1487 goto out_mptspi_probe;
1491 * issue internal bus reset
1493 if (ioc->spi_data.bus_reset)
1494 mptscsih_TMHandler(hd,
1495 MPI_SCSITASKMGMT_TASKTYPE_RESET_BUS,
1503 mptscsih_remove(pdev);
1507 static struct pci_driver mptspi_driver = {
1509 .id_table = mptspi_pci_table,
1510 .probe = mptspi_probe,
1511 .remove = __devexit_p(mptscsih_remove),
1512 .shutdown = mptscsih_shutdown,
1514 .suspend = mptscsih_suspend,
1515 .resume = mptspi_resume,
1519 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1521 * mptspi_init - Register MPT adapter(s) as SCSI host(s) with SCSI mid-layer.
1523 * Returns 0 for success, non-zero for failure.
1530 show_mptmod_ver(my_NAME, my_VERSION);
1532 mptspi_transport_template = spi_attach_transport(&mptspi_transport_functions);
1533 if (!mptspi_transport_template)
1536 mptspiDoneCtx = mpt_register(mptscsih_io_done, MPTSPI_DRIVER);
1537 mptspiTaskCtx = mpt_register(mptscsih_taskmgmt_complete, MPTSPI_DRIVER);
1538 mptspiInternalCtx = mpt_register(mptscsih_scandv_complete, MPTSPI_DRIVER);
1540 mpt_event_register(mptspiDoneCtx, mptspi_event_process);
1541 mpt_reset_register(mptspiDoneCtx, mptspi_ioc_reset);
1543 error = pci_register_driver(&mptspi_driver);
1545 spi_release_transport(mptspi_transport_template);
1550 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1551 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1553 * mptspi_exit - Unregisters MPT adapter(s)
1558 pci_unregister_driver(&mptspi_driver);
1560 mpt_reset_deregister(mptspiDoneCtx);
1561 mpt_event_deregister(mptspiDoneCtx);
1563 mpt_deregister(mptspiInternalCtx);
1564 mpt_deregister(mptspiTaskCtx);
1565 mpt_deregister(mptspiDoneCtx);
1566 spi_release_transport(mptspi_transport_template);
1569 module_init(mptspi_init);
1570 module_exit(mptspi_exit);