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[linux-2.6-omap-h63xx.git] / drivers / message / fusion / mptspi.c
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 #include <linux/raid_class.h>
60
61 #include <scsi/scsi.h>
62 #include <scsi/scsi_cmnd.h>
63 #include <scsi/scsi_device.h>
64 #include <scsi/scsi_host.h>
65 #include <scsi/scsi_tcq.h>
66 #include <scsi/scsi_transport.h>
67 #include <scsi/scsi_transport_spi.h>
68
69 #include "mptbase.h"
70 #include "mptscsih.h"
71
72 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
73 #define my_NAME         "Fusion MPT SPI Host driver"
74 #define my_VERSION      MPT_LINUX_VERSION_COMMON
75 #define MYNAM           "mptspi"
76
77 MODULE_AUTHOR(MODULEAUTHOR);
78 MODULE_DESCRIPTION(my_NAME);
79 MODULE_LICENSE("GPL");
80
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)");
85
86 static int mpt_pq_filter = 0;
87 module_param(mpt_pq_filter, int, 0);
88 MODULE_PARM_DESC(mpt_pq_filter, " Enable peripheral qualifier filter: enable=1  (default=0)");
89
90 static void mptspi_write_offset(struct scsi_target *, int);
91 static void mptspi_write_width(struct scsi_target *, int);
92 static int mptspi_write_spi_device_pg1(struct scsi_target *,
93                                        struct _CONFIG_PAGE_SCSI_DEVICE_1 *);
94
95 static struct scsi_transport_template *mptspi_transport_template = NULL;
96
97 static int      mptspiDoneCtx = -1;
98 static int      mptspiTaskCtx = -1;
99 static int      mptspiInternalCtx = -1; /* Used only for internal commands */
100
101 static int mptspi_target_alloc(struct scsi_target *starget)
102 {
103         struct Scsi_Host *shost = dev_to_shost(&starget->dev);
104         struct _MPT_SCSI_HOST *hd = (struct _MPT_SCSI_HOST *)shost->hostdata;
105         int ret;
106
107         if (hd == NULL)
108                 return -ENODEV;
109
110         ret = mptscsih_target_alloc(starget);
111         if (ret)
112                 return ret;
113
114         /* if we're a device on virtual channel 1 and we're not part
115          * of an array, just return here (otherwise the setup below
116          * may actually affect a real physical device on channel 0 */
117         if (starget->channel == 1 &&
118             mptscsih_raid_id_to_num(hd, starget->id) < 0)
119                 return 0;
120
121         if (hd->ioc->spi_data.nvram &&
122             hd->ioc->spi_data.nvram[starget->id] != MPT_HOST_NVRAM_INVALID) {
123                 u32 nvram = hd->ioc->spi_data.nvram[starget->id];
124                 spi_min_period(starget) = (nvram & MPT_NVRAM_SYNC_MASK) >> MPT_NVRAM_SYNC_SHIFT;
125                 spi_max_width(starget) = nvram & MPT_NVRAM_WIDE_DISABLE ? 0 : 1;
126         } else {
127                 spi_min_period(starget) = hd->ioc->spi_data.minSyncFactor;
128                 spi_max_width(starget) = hd->ioc->spi_data.maxBusWidth;
129         }
130         spi_max_offset(starget) = hd->ioc->spi_data.maxSyncOffset;
131
132         spi_offset(starget) = 0;
133         mptspi_write_width(starget, 0);
134
135         return 0;
136 }
137
138 static int mptspi_read_spi_device_pg0(struct scsi_target *starget,
139                              struct _CONFIG_PAGE_SCSI_DEVICE_0 *pass_pg0)
140 {
141         struct Scsi_Host *shost = dev_to_shost(&starget->dev);
142         struct _MPT_SCSI_HOST *hd = (struct _MPT_SCSI_HOST *)shost->hostdata;
143         struct _MPT_ADAPTER *ioc = hd->ioc;
144         struct _CONFIG_PAGE_SCSI_DEVICE_0 *pg0;
145         dma_addr_t pg0_dma;
146         int size;
147         struct _x_config_parms cfg;
148         struct _CONFIG_PAGE_HEADER hdr;
149         int err = -EBUSY;
150
151         /* No SPI parameters for RAID devices */
152         if (starget->channel == 0 &&
153             (hd->ioc->raid_data.isRaid & (1 << starget->id)))
154                 return -1;
155
156         size = ioc->spi_data.sdp0length * 4;
157         /*
158         if (ioc->spi_data.sdp0length & 1)
159                 size += size + 4;
160         size += 2048;
161         */
162
163         pg0 = dma_alloc_coherent(&ioc->pcidev->dev, size, &pg0_dma, GFP_KERNEL);
164         if (pg0 == NULL) {
165                 starget_printk(KERN_ERR, starget, "dma_alloc_coherent for parameters failed\n");
166                 return -EINVAL;
167         }
168
169         memset(&hdr, 0, sizeof(hdr));
170
171         hdr.PageVersion = ioc->spi_data.sdp0version;
172         hdr.PageLength = ioc->spi_data.sdp0length;
173         hdr.PageNumber = 0;
174         hdr.PageType = MPI_CONFIG_PAGETYPE_SCSI_DEVICE;
175
176         memset(&cfg, 0, sizeof(cfg));
177
178         cfg.cfghdr.hdr = &hdr;
179         cfg.physAddr = pg0_dma;
180         cfg.action = MPI_CONFIG_ACTION_PAGE_READ_CURRENT;
181         cfg.dir = 0;
182         cfg.pageAddr = starget->id;
183
184         if (mpt_config(ioc, &cfg)) {
185                 starget_printk(KERN_ERR, starget, "mpt_config failed\n");
186                 goto out_free;
187         }
188         err = 0;
189         memcpy(pass_pg0, pg0, size);
190
191  out_free:
192         dma_free_coherent(&ioc->pcidev->dev, size, pg0, pg0_dma);
193         return err;
194 }
195
196 static u32 mptspi_getRP(struct scsi_target *starget)
197 {
198         u32 nego = 0;
199
200         nego |= spi_iu(starget) ? MPI_SCSIDEVPAGE1_RP_IU : 0;
201         nego |= spi_dt(starget) ? MPI_SCSIDEVPAGE1_RP_DT : 0;
202         nego |= spi_qas(starget) ? MPI_SCSIDEVPAGE1_RP_QAS : 0;
203         nego |= spi_hold_mcs(starget) ? MPI_SCSIDEVPAGE1_RP_HOLD_MCS : 0;
204         nego |= spi_wr_flow(starget) ? MPI_SCSIDEVPAGE1_RP_WR_FLOW : 0;
205         nego |= spi_rd_strm(starget) ? MPI_SCSIDEVPAGE1_RP_RD_STRM : 0;
206         nego |= spi_rti(starget) ? MPI_SCSIDEVPAGE1_RP_RTI : 0;
207         nego |= spi_pcomp_en(starget) ? MPI_SCSIDEVPAGE1_RP_PCOMP_EN : 0;
208
209         nego |= (spi_period(starget) <<  MPI_SCSIDEVPAGE1_RP_SHIFT_MIN_SYNC_PERIOD) & MPI_SCSIDEVPAGE1_RP_MIN_SYNC_PERIOD_MASK;
210         nego |= (spi_offset(starget) << MPI_SCSIDEVPAGE1_RP_SHIFT_MAX_SYNC_OFFSET) & MPI_SCSIDEVPAGE1_RP_MAX_SYNC_OFFSET_MASK;
211         nego |= spi_width(starget) ?  MPI_SCSIDEVPAGE1_RP_WIDE : 0;
212
213         return nego;
214 }
215
216 static void mptspi_read_parameters(struct scsi_target *starget)
217 {
218         int nego;
219         struct _CONFIG_PAGE_SCSI_DEVICE_0 pg0;
220
221         mptspi_read_spi_device_pg0(starget, &pg0);
222
223         nego = le32_to_cpu(pg0.NegotiatedParameters);
224
225         spi_iu(starget) = (nego & MPI_SCSIDEVPAGE0_NP_IU) ? 1 : 0;
226         spi_dt(starget) = (nego & MPI_SCSIDEVPAGE0_NP_DT) ? 1 : 0;
227         spi_qas(starget) = (nego & MPI_SCSIDEVPAGE0_NP_QAS) ? 1 : 0;
228         spi_wr_flow(starget) = (nego & MPI_SCSIDEVPAGE0_NP_WR_FLOW) ? 1 : 0;
229         spi_rd_strm(starget) = (nego & MPI_SCSIDEVPAGE0_NP_RD_STRM) ? 1 : 0;
230         spi_rti(starget) = (nego & MPI_SCSIDEVPAGE0_NP_RTI) ? 1 : 0;
231         spi_pcomp_en(starget) = (nego & MPI_SCSIDEVPAGE0_NP_PCOMP_EN) ? 1 : 0;
232         spi_hold_mcs(starget) = (nego & MPI_SCSIDEVPAGE0_NP_HOLD_MCS) ? 1 : 0;
233         spi_period(starget) = (nego & MPI_SCSIDEVPAGE0_NP_NEG_SYNC_PERIOD_MASK) >> MPI_SCSIDEVPAGE0_NP_SHIFT_SYNC_PERIOD;
234         spi_offset(starget) = (nego & MPI_SCSIDEVPAGE0_NP_NEG_SYNC_OFFSET_MASK) >> MPI_SCSIDEVPAGE0_NP_SHIFT_SYNC_OFFSET;
235         spi_width(starget) = (nego & MPI_SCSIDEVPAGE0_NP_WIDE) ? 1 : 0;
236 }
237
238 static int
239 mptscsih_quiesce_raid(MPT_SCSI_HOST *hd, int quiesce, int disk)
240 {
241         MpiRaidActionRequest_t  *pReq;
242         MPT_FRAME_HDR           *mf;
243
244         /* Get and Populate a free Frame
245          */
246         if ((mf = mpt_get_msg_frame(hd->ioc->InternalCtx, hd->ioc)) == NULL) {
247                 ddvprintk((MYIOC_s_WARN_FMT "_do_raid: no msg frames!\n",
248                                         hd->ioc->name));
249                 return -EAGAIN;
250         }
251         pReq = (MpiRaidActionRequest_t *)mf;
252         if (quiesce)
253                 pReq->Action = MPI_RAID_ACTION_QUIESCE_PHYS_IO;
254         else
255                 pReq->Action = MPI_RAID_ACTION_ENABLE_PHYS_IO;
256         pReq->Reserved1 = 0;
257         pReq->ChainOffset = 0;
258         pReq->Function = MPI_FUNCTION_RAID_ACTION;
259         pReq->VolumeID = disk;
260         pReq->VolumeBus = 0;
261         pReq->PhysDiskNum = 0;
262         pReq->MsgFlags = 0;
263         pReq->Reserved2 = 0;
264         pReq->ActionDataWord = 0; /* Reserved for this action */
265
266         mpt_add_sge((char *)&pReq->ActionDataSGE,
267                 MPT_SGE_FLAGS_SSIMPLE_READ | 0, (dma_addr_t) -1);
268
269         ddvprintk((MYIOC_s_INFO_FMT "RAID Volume action %x id %d\n",
270                         hd->ioc->name, action, io->id));
271
272         hd->pLocal = NULL;
273         hd->timer.expires = jiffies + HZ*10; /* 10 second timeout */
274         hd->scandv_wait_done = 0;
275
276         /* Save cmd pointer, for resource free if timeout or
277          * FW reload occurs
278          */
279         hd->cmdPtr = mf;
280
281         add_timer(&hd->timer);
282         mpt_put_msg_frame(hd->ioc->InternalCtx, hd->ioc, mf);
283         wait_event(hd->scandv_waitq, hd->scandv_wait_done);
284
285         if ((hd->pLocal == NULL) || (hd->pLocal->completion != 0))
286                 return -1;
287
288         return 0;
289 }
290
291 static void mptspi_dv_device(struct _MPT_SCSI_HOST *hd,
292                              struct scsi_device *sdev)
293 {
294         VirtTarget *vtarget = scsi_target(sdev)->hostdata;
295
296         /* no DV on RAID devices */
297         if (sdev->channel == 0 &&
298             (hd->ioc->raid_data.isRaid & (1 << sdev->id)))
299                 return;
300
301         /* If this is a piece of a RAID, then quiesce first */
302         if (sdev->channel == 1 &&
303             mptscsih_quiesce_raid(hd, 1, vtarget->target_id) < 0) {
304                 starget_printk(KERN_ERR, scsi_target(sdev),
305                                "Integrated RAID quiesce failed\n");
306                 return;
307         }
308
309         spi_dv_device(sdev);
310
311         if (sdev->channel == 1 &&
312             mptscsih_quiesce_raid(hd, 0, vtarget->target_id) < 0)
313                 starget_printk(KERN_ERR, scsi_target(sdev),
314                                "Integrated RAID resume failed\n");
315
316         mptspi_read_parameters(sdev->sdev_target);
317         spi_display_xfer_agreement(sdev->sdev_target);
318         mptspi_read_parameters(sdev->sdev_target);
319 }
320
321 static int mptspi_slave_alloc(struct scsi_device *sdev)
322 {
323         int ret;
324         MPT_SCSI_HOST *hd = (MPT_SCSI_HOST *)sdev->host->hostdata;
325         /* gcc doesn't see that all uses of this variable occur within
326          * the if() statements, so stop it from whining */
327         int physdisknum = 0;
328
329         if (sdev->channel == 1) {
330                 physdisknum = mptscsih_raid_id_to_num(hd, sdev->id);
331
332                 if (physdisknum < 0)
333                         return physdisknum;
334         }
335
336         ret = mptscsih_slave_alloc(sdev);
337
338         if (ret)
339                 return ret;
340
341         if (sdev->channel == 1) {
342                 VirtDevice *vdev = sdev->hostdata;
343                 sdev->no_uld_attach = 1;
344                 vdev->vtarget->tflags |= MPT_TARGET_FLAGS_RAID_COMPONENT;
345                 /* The real channel for this device is zero */
346                 vdev->vtarget->bus_id = 0;
347                 /* The actual physdisknum (for RAID passthrough) */
348                 vdev->vtarget->target_id = physdisknum;
349         }
350
351         return 0;
352 }
353
354 static int mptspi_slave_configure(struct scsi_device *sdev)
355 {
356         int ret = mptscsih_slave_configure(sdev);
357         struct _MPT_SCSI_HOST *hd =
358                 (struct _MPT_SCSI_HOST *)sdev->host->hostdata;
359
360         if (ret)
361                 return ret;
362
363         if ((sdev->channel == 1 ||
364              !(hd->ioc->raid_data.isRaid & (1 << sdev->id))) &&
365             !spi_initial_dv(sdev->sdev_target))
366                 mptspi_dv_device(hd, sdev);
367
368         return 0;
369 }
370
371 static void mptspi_slave_destroy(struct scsi_device *sdev)
372 {
373         struct scsi_target *starget = scsi_target(sdev);
374         VirtTarget *vtarget = starget->hostdata;
375         VirtDevice *vdevice = sdev->hostdata;
376
377         /* Will this be the last lun on a non-raid device? */
378         if (vtarget->num_luns == 1 && vdevice->configured_lun) {
379                 struct _CONFIG_PAGE_SCSI_DEVICE_1 pg1;
380
381                 /* Async Narrow */
382                 pg1.RequestedParameters = 0;
383                 pg1.Reserved = 0;
384                 pg1.Configuration = 0;
385
386                 mptspi_write_spi_device_pg1(starget, &pg1);
387         }
388
389         mptscsih_slave_destroy(sdev);
390 }
391
392 static struct scsi_host_template mptspi_driver_template = {
393         .module                         = THIS_MODULE,
394         .proc_name                      = "mptspi",
395         .proc_info                      = mptscsih_proc_info,
396         .name                           = "MPT SPI Host",
397         .info                           = mptscsih_info,
398         .queuecommand                   = mptscsih_qcmd,
399         .target_alloc                   = mptspi_target_alloc,
400         .slave_alloc                    = mptspi_slave_alloc,
401         .slave_configure                = mptspi_slave_configure,
402         .target_destroy                 = mptscsih_target_destroy,
403         .slave_destroy                  = mptspi_slave_destroy,
404         .change_queue_depth             = mptscsih_change_queue_depth,
405         .eh_abort_handler               = mptscsih_abort,
406         .eh_device_reset_handler        = mptscsih_dev_reset,
407         .eh_bus_reset_handler           = mptscsih_bus_reset,
408         .eh_host_reset_handler          = mptscsih_host_reset,
409         .bios_param                     = mptscsih_bios_param,
410         .can_queue                      = MPT_SCSI_CAN_QUEUE,
411         .this_id                        = -1,
412         .sg_tablesize                   = MPT_SCSI_SG_DEPTH,
413         .max_sectors                    = 8192,
414         .cmd_per_lun                    = 7,
415         .use_clustering                 = ENABLE_CLUSTERING,
416 };
417
418 static int mptspi_write_spi_device_pg1(struct scsi_target *starget,
419                                struct _CONFIG_PAGE_SCSI_DEVICE_1 *pass_pg1)
420 {
421         struct Scsi_Host *shost = dev_to_shost(&starget->dev);
422         struct _MPT_SCSI_HOST *hd = (struct _MPT_SCSI_HOST *)shost->hostdata;
423         struct _MPT_ADAPTER *ioc = hd->ioc;
424         struct _CONFIG_PAGE_SCSI_DEVICE_1 *pg1;
425         dma_addr_t pg1_dma;
426         int size;
427         struct _x_config_parms cfg;
428         struct _CONFIG_PAGE_HEADER hdr;
429         int err = -EBUSY;
430
431         /* don't allow updating nego parameters on RAID devices */
432         if (starget->channel == 0 &&
433             (hd->ioc->raid_data.isRaid & (1 << starget->id)))
434                 return -1;
435
436         size = ioc->spi_data.sdp1length * 4;
437
438         pg1 = dma_alloc_coherent(&ioc->pcidev->dev, size, &pg1_dma, GFP_KERNEL);
439         if (pg1 == NULL) {
440                 starget_printk(KERN_ERR, starget, "dma_alloc_coherent for parameters failed\n");
441                 return -EINVAL;
442         }
443
444         memset(&hdr, 0, sizeof(hdr));
445
446         hdr.PageVersion = ioc->spi_data.sdp1version;
447         hdr.PageLength = ioc->spi_data.sdp1length;
448         hdr.PageNumber = 1;
449         hdr.PageType = MPI_CONFIG_PAGETYPE_SCSI_DEVICE;
450
451         memset(&cfg, 0, sizeof(cfg));
452
453         cfg.cfghdr.hdr = &hdr;
454         cfg.physAddr = pg1_dma;
455         cfg.action = MPI_CONFIG_ACTION_PAGE_WRITE_CURRENT;
456         cfg.dir = 1;
457         cfg.pageAddr = starget->id;
458
459         memcpy(pg1, pass_pg1, size);
460
461         pg1->Header.PageVersion = hdr.PageVersion;
462         pg1->Header.PageLength = hdr.PageLength;
463         pg1->Header.PageNumber = hdr.PageNumber;
464         pg1->Header.PageType = hdr.PageType;
465
466         if (mpt_config(ioc, &cfg)) {
467                 starget_printk(KERN_ERR, starget, "mpt_config failed\n");
468                 goto out_free;
469         }
470         err = 0;
471
472  out_free:
473         dma_free_coherent(&ioc->pcidev->dev, size, pg1, pg1_dma);
474         return err;
475 }
476
477 static void mptspi_write_offset(struct scsi_target *starget, int offset)
478 {
479         struct _CONFIG_PAGE_SCSI_DEVICE_1 pg1;
480         u32 nego;
481
482         if (offset < 0)
483                 offset = 0;
484
485         if (offset > 255)
486                 offset = 255;
487
488         if (spi_offset(starget) == -1)
489                 mptspi_read_parameters(starget);
490
491         spi_offset(starget) = offset;
492
493         nego = mptspi_getRP(starget);
494
495         pg1.RequestedParameters = cpu_to_le32(nego);
496         pg1.Reserved = 0;
497         pg1.Configuration = 0;
498
499         mptspi_write_spi_device_pg1(starget, &pg1);
500 }
501
502 static void mptspi_write_period(struct scsi_target *starget, int period)
503 {
504         struct _CONFIG_PAGE_SCSI_DEVICE_1 pg1;
505         u32 nego;
506
507         if (period < 8)
508                 period = 8;
509
510         if (period > 255)
511                 period = 255;
512
513         if (spi_period(starget) == -1)
514                 mptspi_read_parameters(starget);
515
516         if (period == 8) {
517                 spi_iu(starget) = 1;
518                 spi_dt(starget) = 1;
519         } else if (period == 9) {
520                 spi_dt(starget) = 1;
521         }
522
523         spi_period(starget) = period;
524
525         nego = mptspi_getRP(starget);
526
527         pg1.RequestedParameters = cpu_to_le32(nego);
528         pg1.Reserved = 0;
529         pg1.Configuration = 0;
530
531         mptspi_write_spi_device_pg1(starget, &pg1);
532 }
533
534 static void mptspi_write_dt(struct scsi_target *starget, int dt)
535 {
536         struct _CONFIG_PAGE_SCSI_DEVICE_1 pg1;
537         u32 nego;
538
539         if (spi_period(starget) == -1)
540                 mptspi_read_parameters(starget);
541
542         if (!dt && spi_period(starget) < 10)
543                 spi_period(starget) = 10;
544
545         spi_dt(starget) = dt;
546
547         nego = mptspi_getRP(starget);
548
549
550         pg1.RequestedParameters = cpu_to_le32(nego);
551         pg1.Reserved = 0;
552         pg1.Configuration = 0;
553
554         mptspi_write_spi_device_pg1(starget, &pg1);
555 }
556
557 static void mptspi_write_iu(struct scsi_target *starget, int iu)
558 {
559         struct _CONFIG_PAGE_SCSI_DEVICE_1 pg1;
560         u32 nego;
561
562         if (spi_period(starget) == -1)
563                 mptspi_read_parameters(starget);
564
565         if (!iu && spi_period(starget) < 9)
566                 spi_period(starget) = 9;
567
568         spi_iu(starget) = iu;
569
570         nego = mptspi_getRP(starget);
571
572         pg1.RequestedParameters = cpu_to_le32(nego);
573         pg1.Reserved = 0;
574         pg1.Configuration = 0;
575
576         mptspi_write_spi_device_pg1(starget, &pg1);
577 }
578
579 #define MPTSPI_SIMPLE_TRANSPORT_PARM(parm)                              \
580 static void mptspi_write_##parm(struct scsi_target *starget, int parm)\
581 {                                                                       \
582         struct _CONFIG_PAGE_SCSI_DEVICE_1 pg1;                          \
583         u32 nego;                                                       \
584                                                                         \
585         spi_##parm(starget) = parm;                                     \
586                                                                         \
587         nego = mptspi_getRP(starget);                                   \
588                                                                         \
589         pg1.RequestedParameters = cpu_to_le32(nego);                    \
590         pg1.Reserved = 0;                                               \
591         pg1.Configuration = 0;                                          \
592                                                                         \
593         mptspi_write_spi_device_pg1(starget, &pg1);                             \
594 }
595
596 MPTSPI_SIMPLE_TRANSPORT_PARM(rd_strm)
597 MPTSPI_SIMPLE_TRANSPORT_PARM(wr_flow)
598 MPTSPI_SIMPLE_TRANSPORT_PARM(rti)
599 MPTSPI_SIMPLE_TRANSPORT_PARM(hold_mcs)
600 MPTSPI_SIMPLE_TRANSPORT_PARM(pcomp_en)
601
602 static void mptspi_write_qas(struct scsi_target *starget, int qas)
603 {
604         struct _CONFIG_PAGE_SCSI_DEVICE_1 pg1;
605         struct Scsi_Host *shost = dev_to_shost(&starget->dev);
606         struct _MPT_SCSI_HOST *hd = (struct _MPT_SCSI_HOST *)shost->hostdata;
607         VirtTarget *vtarget = starget->hostdata;
608         u32 nego;
609
610         if ((vtarget->negoFlags & MPT_TARGET_NO_NEGO_QAS) ||
611             hd->ioc->spi_data.noQas)
612                 spi_qas(starget) = 0;
613         else
614                 spi_qas(starget) = qas;
615
616         nego = mptspi_getRP(starget);
617
618         pg1.RequestedParameters = cpu_to_le32(nego);
619         pg1.Reserved = 0;
620         pg1.Configuration = 0;
621
622         mptspi_write_spi_device_pg1(starget, &pg1);
623 }
624
625 static void mptspi_write_width(struct scsi_target *starget, int width)
626 {
627         struct _CONFIG_PAGE_SCSI_DEVICE_1 pg1;
628         u32 nego;
629
630         if (!width) {
631                 spi_dt(starget) = 0;
632                 if (spi_period(starget) < 10)
633                         spi_period(starget) = 10;
634         }
635
636         spi_width(starget) = width;
637
638         nego = mptspi_getRP(starget);
639
640         pg1.RequestedParameters = cpu_to_le32(nego);
641         pg1.Reserved = 0;
642         pg1.Configuration = 0;
643
644         mptspi_write_spi_device_pg1(starget, &pg1);
645 }
646
647 struct work_queue_wrapper {
648         struct work_struct      work;
649         struct _MPT_SCSI_HOST   *hd;
650         int                     disk;
651 };
652
653 static void mpt_work_wrapper(void *data)
654 {
655         struct work_queue_wrapper *wqw = (struct work_queue_wrapper *)data;
656         struct _MPT_SCSI_HOST *hd = wqw->hd;
657         struct Scsi_Host *shost = hd->ioc->sh;
658         struct scsi_device *sdev;
659         int disk = wqw->disk;
660         struct _CONFIG_PAGE_IOC_3 *pg3;
661
662         kfree(wqw);
663
664         mpt_findImVolumes(hd->ioc);
665         pg3 = hd->ioc->raid_data.pIocPg3;
666         if (!pg3)
667                 return;
668
669         shost_for_each_device(sdev,shost) {
670                 struct scsi_target *starget = scsi_target(sdev);
671                 VirtTarget *vtarget = starget->hostdata;
672
673                 /* only want to search RAID components */
674                 if (sdev->channel != 1)
675                         continue;
676
677                 /* The target_id is the raid PhysDiskNum, even if
678                  * starget->id is the actual target address */
679                 if(vtarget->target_id != disk)
680                         continue;
681
682                 starget_printk(KERN_INFO, vtarget->starget,
683                                "Integrated RAID requests DV of new device\n");
684                 mptspi_dv_device(hd, sdev);
685         }
686         shost_printk(KERN_INFO, shost,
687                      "Integrated RAID detects new device %d\n", disk);
688         scsi_scan_target(&hd->ioc->sh->shost_gendev, 1, disk, 0, 1);
689 }
690
691
692 static void mpt_dv_raid(struct _MPT_SCSI_HOST *hd, int disk)
693 {
694         struct work_queue_wrapper *wqw = kmalloc(sizeof(*wqw), GFP_ATOMIC);
695
696         if (!wqw) {
697                 shost_printk(KERN_ERR, hd->ioc->sh,
698                              "Failed to act on RAID event for physical disk %d\n",
699                            disk);
700                 return;
701         }
702         INIT_WORK(&wqw->work, mpt_work_wrapper, wqw);
703         wqw->hd = hd;
704         wqw->disk = disk;
705
706         schedule_work(&wqw->work);
707 }
708
709 static int
710 mptspi_event_process(MPT_ADAPTER *ioc, EventNotificationReply_t *pEvReply)
711 {
712         u8 event = le32_to_cpu(pEvReply->Event) & 0xFF;
713         struct _MPT_SCSI_HOST *hd = (struct _MPT_SCSI_HOST *)ioc->sh->hostdata;
714
715         if (hd && event ==  MPI_EVENT_INTEGRATED_RAID) {
716                 int reason
717                         = (le32_to_cpu(pEvReply->Data[0]) & 0x00FF0000) >> 16;
718
719                 if (reason == MPI_EVENT_RAID_RC_DOMAIN_VAL_NEEDED) {
720                         int disk = (le32_to_cpu(pEvReply->Data[0]) & 0xFF000000) >> 24;
721                         mpt_dv_raid(hd, disk);
722                 }
723         }
724         return mptscsih_event_process(ioc, pEvReply);
725 }
726
727 static int
728 mptspi_deny_binding(struct scsi_target *starget)
729 {
730         struct _MPT_SCSI_HOST *hd =
731                 (struct _MPT_SCSI_HOST *)dev_to_shost(starget->dev.parent)->hostdata;
732         return ((hd->ioc->raid_data.isRaid & (1 << starget->id)) &&
733                 starget->channel == 0) ? 1 : 0;
734 }
735
736 static struct spi_function_template mptspi_transport_functions = {
737         .get_offset     = mptspi_read_parameters,
738         .set_offset     = mptspi_write_offset,
739         .show_offset    = 1,
740         .get_period     = mptspi_read_parameters,
741         .set_period     = mptspi_write_period,
742         .show_period    = 1,
743         .get_width      = mptspi_read_parameters,
744         .set_width      = mptspi_write_width,
745         .show_width     = 1,
746         .get_iu         = mptspi_read_parameters,
747         .set_iu         = mptspi_write_iu,
748         .show_iu        = 1,
749         .get_dt         = mptspi_read_parameters,
750         .set_dt         = mptspi_write_dt,
751         .show_dt        = 1,
752         .get_qas        = mptspi_read_parameters,
753         .set_qas        = mptspi_write_qas,
754         .show_qas       = 1,
755         .get_wr_flow    = mptspi_read_parameters,
756         .set_wr_flow    = mptspi_write_wr_flow,
757         .show_wr_flow   = 1,
758         .get_rd_strm    = mptspi_read_parameters,
759         .set_rd_strm    = mptspi_write_rd_strm,
760         .show_rd_strm   = 1,
761         .get_rti        = mptspi_read_parameters,
762         .set_rti        = mptspi_write_rti,
763         .show_rti       = 1,
764         .get_pcomp_en   = mptspi_read_parameters,
765         .set_pcomp_en   = mptspi_write_pcomp_en,
766         .show_pcomp_en  = 1,
767         .get_hold_mcs   = mptspi_read_parameters,
768         .set_hold_mcs   = mptspi_write_hold_mcs,
769         .show_hold_mcs  = 1,
770         .deny_binding   = mptspi_deny_binding,
771 };
772
773 /****************************************************************************
774  * Supported hardware
775  */
776
777 static struct pci_device_id mptspi_pci_table[] = {
778         { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C1030,
779                 PCI_ANY_ID, PCI_ANY_ID },
780         { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_1030_53C1035,
781                 PCI_ANY_ID, PCI_ANY_ID },
782         {0}     /* Terminating entry */
783 };
784 MODULE_DEVICE_TABLE(pci, mptspi_pci_table);
785
786
787 /*
788  * renegotiate for a given target
789  */
790 static void
791 mptspi_dv_renegotiate_work(void *data)
792 {
793         struct work_queue_wrapper *wqw = (struct work_queue_wrapper *)data;
794         struct _MPT_SCSI_HOST *hd = wqw->hd;
795         struct scsi_device *sdev;
796
797         kfree(wqw);
798
799         shost_for_each_device(sdev, hd->ioc->sh)
800                 mptspi_dv_device(hd, sdev);
801 }
802
803 static void
804 mptspi_dv_renegotiate(struct _MPT_SCSI_HOST *hd)
805 {
806         struct work_queue_wrapper *wqw = kmalloc(sizeof(*wqw), GFP_ATOMIC);
807
808         if (!wqw)
809                 return;
810
811         INIT_WORK(&wqw->work, mptspi_dv_renegotiate_work, wqw);
812         wqw->hd = hd;
813
814         schedule_work(&wqw->work);
815 }
816
817 /*
818  * spi module reset handler
819  */
820 static int
821 mptspi_ioc_reset(MPT_ADAPTER *ioc, int reset_phase)
822 {
823         struct _MPT_SCSI_HOST *hd = (struct _MPT_SCSI_HOST *)ioc->sh->hostdata;
824         int rc;
825
826         rc = mptscsih_ioc_reset(ioc, reset_phase);
827
828         if (reset_phase == MPT_IOC_POST_RESET)
829                 mptspi_dv_renegotiate(hd);
830
831         return rc;
832 }
833
834 /*
835  * spi module resume handler
836  */
837 static int
838 mptspi_resume(struct pci_dev *pdev)
839 {
840         MPT_ADAPTER     *ioc = pci_get_drvdata(pdev);
841         struct _MPT_SCSI_HOST *hd = (struct _MPT_SCSI_HOST *)ioc->sh->hostdata;
842         int rc;
843
844         rc = mptscsih_resume(pdev);
845         mptspi_dv_renegotiate(hd);
846
847         return rc;
848 }
849
850 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
851 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
852 /*
853  *      mptspi_probe - Installs scsi devices per bus.
854  *      @pdev: Pointer to pci_dev structure
855  *
856  *      Returns 0 for success, non-zero for failure.
857  *
858  */
859 static int
860 mptspi_probe(struct pci_dev *pdev, const struct pci_device_id *id)
861 {
862         struct Scsi_Host        *sh;
863         MPT_SCSI_HOST           *hd;
864         MPT_ADAPTER             *ioc;
865         unsigned long            flags;
866         int                      ii;
867         int                      numSGE = 0;
868         int                      scale;
869         int                      ioc_cap;
870         int                     error=0;
871         int                     r;
872
873         if ((r = mpt_attach(pdev,id)) != 0)
874                 return r;
875
876         ioc = pci_get_drvdata(pdev);
877         ioc->DoneCtx = mptspiDoneCtx;
878         ioc->TaskCtx = mptspiTaskCtx;
879         ioc->InternalCtx = mptspiInternalCtx;
880
881         /*  Added sanity check on readiness of the MPT adapter.
882          */
883         if (ioc->last_state != MPI_IOC_STATE_OPERATIONAL) {
884                 printk(MYIOC_s_WARN_FMT
885                   "Skipping because it's not operational!\n",
886                   ioc->name);
887                 error = -ENODEV;
888                 goto out_mptspi_probe;
889         }
890
891         if (!ioc->active) {
892                 printk(MYIOC_s_WARN_FMT "Skipping because it's disabled!\n",
893                   ioc->name);
894                 error = -ENODEV;
895                 goto out_mptspi_probe;
896         }
897
898         /*  Sanity check - ensure at least 1 port is INITIATOR capable
899          */
900         ioc_cap = 0;
901         for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) {
902                 if (ioc->pfacts[ii].ProtocolFlags &
903                     MPI_PORTFACTS_PROTOCOL_INITIATOR)
904                         ioc_cap ++;
905         }
906
907         if (!ioc_cap) {
908                 printk(MYIOC_s_WARN_FMT
909                         "Skipping ioc=%p because SCSI Initiator mode is NOT enabled!\n",
910                         ioc->name, ioc);
911                 return 0;
912         }
913
914         sh = scsi_host_alloc(&mptspi_driver_template, sizeof(MPT_SCSI_HOST));
915
916         if (!sh) {
917                 printk(MYIOC_s_WARN_FMT
918                         "Unable to register controller with SCSI subsystem\n",
919                         ioc->name);
920                 error = -1;
921                 goto out_mptspi_probe;
922         }
923
924         spin_lock_irqsave(&ioc->FreeQlock, flags);
925
926         /* Attach the SCSI Host to the IOC structure
927          */
928         ioc->sh = sh;
929
930         sh->io_port = 0;
931         sh->n_io_port = 0;
932         sh->irq = 0;
933
934         /* set 16 byte cdb's */
935         sh->max_cmd_len = 16;
936
937         /* Yikes!  This is important!
938          * Otherwise, by default, linux
939          * only scans target IDs 0-7!
940          * pfactsN->MaxDevices unreliable
941          * (not supported in early
942          *      versions of the FW).
943          * max_id = 1 + actual max id,
944          * max_lun = 1 + actual last lun,
945          *      see hosts.h :o(
946          */
947         sh->max_id = MPT_MAX_SCSI_DEVICES;
948
949         sh->max_lun = MPT_LAST_LUN + 1;
950         /*
951          * If RAID Firmware Detected, setup virtual channel
952          */
953         if ((ioc->facts.ProductID & MPI_FW_HEADER_PID_PROD_MASK)
954             > MPI_FW_HEADER_PID_PROD_TARGET_SCSI)
955                 sh->max_channel = 1;
956         else
957                 sh->max_channel = 0;
958         sh->this_id = ioc->pfacts[0].PortSCSIID;
959
960         /* Required entry.
961          */
962         sh->unique_id = ioc->id;
963
964         /* Verify that we won't exceed the maximum
965          * number of chain buffers
966          * We can optimize:  ZZ = req_sz/sizeof(SGE)
967          * For 32bit SGE's:
968          *  numSGE = 1 + (ZZ-1)*(maxChain -1) + ZZ
969          *               + (req_sz - 64)/sizeof(SGE)
970          * A slightly different algorithm is required for
971          * 64bit SGEs.
972          */
973         scale = ioc->req_sz/(sizeof(dma_addr_t) + sizeof(u32));
974         if (sizeof(dma_addr_t) == sizeof(u64)) {
975                 numSGE = (scale - 1) *
976                   (ioc->facts.MaxChainDepth-1) + scale +
977                   (ioc->req_sz - 60) / (sizeof(dma_addr_t) +
978                   sizeof(u32));
979         } else {
980                 numSGE = 1 + (scale - 1) *
981                   (ioc->facts.MaxChainDepth-1) + scale +
982                   (ioc->req_sz - 64) / (sizeof(dma_addr_t) +
983                   sizeof(u32));
984         }
985
986         if (numSGE < sh->sg_tablesize) {
987                 /* Reset this value */
988                 dprintk((MYIOC_s_INFO_FMT
989                   "Resetting sg_tablesize to %d from %d\n",
990                   ioc->name, numSGE, sh->sg_tablesize));
991                 sh->sg_tablesize = numSGE;
992         }
993
994         spin_unlock_irqrestore(&ioc->FreeQlock, flags);
995
996         hd = (MPT_SCSI_HOST *) sh->hostdata;
997         hd->ioc = ioc;
998
999         /* SCSI needs scsi_cmnd lookup table!
1000          * (with size equal to req_depth*PtrSz!)
1001          */
1002         hd->ScsiLookup = kcalloc(ioc->req_depth, sizeof(void *), GFP_ATOMIC);
1003         if (!hd->ScsiLookup) {
1004                 error = -ENOMEM;
1005                 goto out_mptspi_probe;
1006         }
1007
1008         dprintk((MYIOC_s_INFO_FMT "ScsiLookup @ %p\n",
1009                  ioc->name, hd->ScsiLookup));
1010
1011         /* Allocate memory for the device structures.
1012          * A non-Null pointer at an offset
1013          * indicates a device exists.
1014          * max_id = 1 + maximum id (hosts.h)
1015          */
1016         hd->Targets = kcalloc(sh->max_id * (sh->max_channel + 1),
1017                               sizeof(void *), GFP_ATOMIC);
1018         if (!hd->Targets) {
1019                 error = -ENOMEM;
1020                 goto out_mptspi_probe;
1021         }
1022
1023         dprintk((KERN_INFO "  vdev @ %p\n", hd->Targets));
1024
1025         /* Clear the TM flags
1026          */
1027         hd->tmPending = 0;
1028         hd->tmState = TM_STATE_NONE;
1029         hd->resetPending = 0;
1030         hd->abortSCpnt = NULL;
1031
1032         /* Clear the pointer used to store
1033          * single-threaded commands, i.e., those
1034          * issued during a bus scan, dv and
1035          * configuration pages.
1036          */
1037         hd->cmdPtr = NULL;
1038
1039         /* Initialize this SCSI Hosts' timers
1040          * To use, set the timer expires field
1041          * and add_timer
1042          */
1043         init_timer(&hd->timer);
1044         hd->timer.data = (unsigned long) hd;
1045         hd->timer.function = mptscsih_timer_expired;
1046
1047         ioc->spi_data.Saf_Te = mpt_saf_te;
1048         hd->mpt_pq_filter = mpt_pq_filter;
1049
1050         hd->negoNvram = MPT_SCSICFG_USE_NVRAM;
1051         ddvprintk((MYIOC_s_INFO_FMT
1052                 "saf_te %x mpt_pq_filter %x\n",
1053                 ioc->name,
1054                 mpt_saf_te,
1055                 mpt_pq_filter));
1056         ioc->spi_data.noQas = 0;
1057
1058         init_waitqueue_head(&hd->scandv_waitq);
1059         hd->scandv_wait_done = 0;
1060         hd->last_queue_full = 0;
1061
1062         /* Some versions of the firmware don't support page 0; without
1063          * that we can't get the parameters */
1064         if (hd->ioc->spi_data.sdp0length != 0)
1065                 sh->transportt = mptspi_transport_template;
1066
1067         error = scsi_add_host (sh, &ioc->pcidev->dev);
1068         if(error) {
1069                 dprintk((KERN_ERR MYNAM
1070                   "scsi_add_host failed\n"));
1071                 goto out_mptspi_probe;
1072         }
1073
1074         /*
1075          * issue internal bus reset
1076          */
1077         if (ioc->spi_data.bus_reset)
1078                 mptscsih_TMHandler(hd,
1079                     MPI_SCSITASKMGMT_TASKTYPE_RESET_BUS,
1080                     0, 0, 0, 0, 5);
1081
1082         scsi_scan_host(sh);
1083         return 0;
1084
1085 out_mptspi_probe:
1086
1087         mptscsih_remove(pdev);
1088         return error;
1089 }
1090
1091 static struct pci_driver mptspi_driver = {
1092         .name           = "mptspi",
1093         .id_table       = mptspi_pci_table,
1094         .probe          = mptspi_probe,
1095         .remove         = __devexit_p(mptscsih_remove),
1096         .shutdown       = mptscsih_shutdown,
1097 #ifdef CONFIG_PM
1098         .suspend        = mptscsih_suspend,
1099         .resume         = mptspi_resume,
1100 #endif
1101 };
1102
1103 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1104 /**
1105  *      mptspi_init - Register MPT adapter(s) as SCSI host(s) with
1106  *      linux scsi mid-layer.
1107  *
1108  *      Returns 0 for success, non-zero for failure.
1109  */
1110 static int __init
1111 mptspi_init(void)
1112 {
1113         show_mptmod_ver(my_NAME, my_VERSION);
1114
1115         mptspi_transport_template = spi_attach_transport(&mptspi_transport_functions);
1116         if (!mptspi_transport_template)
1117                 return -ENODEV;
1118
1119         mptspiDoneCtx = mpt_register(mptscsih_io_done, MPTSPI_DRIVER);
1120         mptspiTaskCtx = mpt_register(mptscsih_taskmgmt_complete, MPTSPI_DRIVER);
1121         mptspiInternalCtx = mpt_register(mptscsih_scandv_complete, MPTSPI_DRIVER);
1122
1123         if (mpt_event_register(mptspiDoneCtx, mptspi_event_process) == 0) {
1124                 devtverboseprintk((KERN_INFO MYNAM
1125                   ": Registered for IOC event notifications\n"));
1126         }
1127
1128         if (mpt_reset_register(mptspiDoneCtx, mptspi_ioc_reset) == 0) {
1129                 dprintk((KERN_INFO MYNAM
1130                   ": Registered for IOC reset notifications\n"));
1131         }
1132
1133         return pci_register_driver(&mptspi_driver);
1134 }
1135
1136 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1137 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1138 /**
1139  *      mptspi_exit - Unregisters MPT adapter(s)
1140  *
1141  */
1142 static void __exit
1143 mptspi_exit(void)
1144 {
1145         pci_unregister_driver(&mptspi_driver);
1146
1147         mpt_reset_deregister(mptspiDoneCtx);
1148         dprintk((KERN_INFO MYNAM
1149           ": Deregistered for IOC reset notifications\n"));
1150
1151         mpt_event_deregister(mptspiDoneCtx);
1152         dprintk((KERN_INFO MYNAM
1153           ": Deregistered for IOC event notifications\n"));
1154
1155         mpt_deregister(mptspiInternalCtx);
1156         mpt_deregister(mptspiTaskCtx);
1157         mpt_deregister(mptspiDoneCtx);
1158         spi_release_transport(mptspi_transport_template);
1159 }
1160
1161 module_init(mptspi_init);
1162 module_exit(mptspi_exit);