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[mirror_ubuntu-artful-kernel.git] / drivers / scsi / arcmsr / arcmsr_hba.c
1 /*
2 *******************************************************************************
3 ** O.S : Linux
4 ** FILE NAME : arcmsr_hba.c
5 ** BY : Erich Chen
6 ** Description: SCSI RAID Device Driver for
7 ** ARECA RAID Host adapter
8 *******************************************************************************
9 ** Copyright (C) 2002 - 2005, Areca Technology Corporation All rights reserved
10 **
11 ** Web site: www.areca.com.tw
12 ** E-mail: erich@areca.com.tw
13 **
14 ** This program is free software; you can redistribute it and/or modify
15 ** it under the terms of the GNU General Public License version 2 as
16 ** published by the Free Software Foundation.
17 ** This program is distributed in the hope that it will be useful,
18 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
19 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 ** GNU General Public License for more details.
21 *******************************************************************************
22 ** Redistribution and use in source and binary forms, with or without
23 ** modification, are permitted provided that the following conditions
24 ** are met:
25 ** 1. Redistributions of source code must retain the above copyright
26 ** notice, this list of conditions and the following disclaimer.
27 ** 2. Redistributions in binary form must reproduce the above copyright
28 ** notice, this list of conditions and the following disclaimer in the
29 ** documentation and/or other materials provided with the distribution.
30 ** 3. The name of the author may not be used to endorse or promote products
31 ** derived from this software without specific prior written permission.
32 **
33 ** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
34 ** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
35 ** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
36 ** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
37 ** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES(INCLUDING,BUT
38 ** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
39 ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION)HOWEVER CAUSED AND ON ANY
40 ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
41 ** (INCLUDING NEGLIGENCE OR OTHERWISE)ARISING IN ANY WAY OUT OF THE USE OF
42 ** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
43 *******************************************************************************
44 ** For history of changes, see Documentation/scsi/ChangeLog.arcmsr
45 ** Firmware Specification, see Documentation/scsi/arcmsr_spec.txt
46 *******************************************************************************
47 */
48 #include <linux/module.h>
49 #include <linux/reboot.h>
50 #include <linux/spinlock.h>
51 #include <linux/pci_ids.h>
52 #include <linux/interrupt.h>
53 #include <linux/moduleparam.h>
54 #include <linux/errno.h>
55 #include <linux/types.h>
56 #include <linux/delay.h>
57 #include <linux/dma-mapping.h>
58 #include <linux/timer.h>
59 #include <linux/pci.h>
60 #include <asm/dma.h>
61 #include <asm/io.h>
62 #include <asm/system.h>
63 #include <asm/uaccess.h>
64 #include <scsi/scsi_host.h>
65 #include <scsi/scsi.h>
66 #include <scsi/scsi_cmnd.h>
67 #include <scsi/scsi_tcq.h>
68 #include <scsi/scsi_device.h>
69 #include <scsi/scsi_transport.h>
70 #include <scsi/scsicam.h>
71 #include "arcmsr.h"
72
73 MODULE_AUTHOR("Erich Chen <erich@areca.com.tw>");
74 MODULE_DESCRIPTION("ARECA (ARC11xx/12xx) SATA RAID HOST Adapter");
75 MODULE_LICENSE("Dual BSD/GPL");
76 MODULE_VERSION(ARCMSR_DRIVER_VERSION);
77
78 static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb, struct scsi_cmnd *cmd);
79 static int arcmsr_abort(struct scsi_cmnd *);
80 static int arcmsr_bus_reset(struct scsi_cmnd *);
81 static int arcmsr_bios_param(struct scsi_device *sdev,
82 struct block_device *bdev, sector_t capacity, int *info);
83 static int arcmsr_queue_command(struct scsi_cmnd * cmd,
84 void (*done) (struct scsi_cmnd *));
85 static int arcmsr_probe(struct pci_dev *pdev,
86 const struct pci_device_id *id);
87 static void arcmsr_remove(struct pci_dev *pdev);
88 static void arcmsr_shutdown(struct pci_dev *pdev);
89 static void arcmsr_iop_init(struct AdapterControlBlock *acb);
90 static void arcmsr_free_ccb_pool(struct AdapterControlBlock *acb);
91 static void arcmsr_stop_adapter_bgrb(struct AdapterControlBlock *acb);
92 static void arcmsr_flush_adapter_cache(struct AdapterControlBlock *acb);
93 static uint8_t arcmsr_wait_msgint_ready(struct AdapterControlBlock *acb);
94 static const char *arcmsr_info(struct Scsi_Host *);
95 static irqreturn_t arcmsr_interrupt(struct AdapterControlBlock *acb);
96
97 static int arcmsr_adjust_disk_queue_depth(struct scsi_device *sdev, int queue_depth)
98 {
99 if (queue_depth > ARCMSR_MAX_CMD_PERLUN)
100 queue_depth = ARCMSR_MAX_CMD_PERLUN;
101 scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG, queue_depth);
102 return queue_depth;
103 }
104
105 static struct scsi_host_template arcmsr_scsi_host_template = {
106 .module = THIS_MODULE,
107 .name = "ARCMSR ARECA SATA RAID HOST Adapter" ARCMSR_DRIVER_VERSION,
108 .info = arcmsr_info,
109 .queuecommand = arcmsr_queue_command,
110 .eh_abort_handler = arcmsr_abort,
111 .eh_bus_reset_handler = arcmsr_bus_reset,
112 .bios_param = arcmsr_bios_param,
113 .change_queue_depth = arcmsr_adjust_disk_queue_depth,
114 .can_queue = ARCMSR_MAX_OUTSTANDING_CMD,
115 .this_id = ARCMSR_SCSI_INITIATOR_ID,
116 .sg_tablesize = ARCMSR_MAX_SG_ENTRIES,
117 .max_sectors = ARCMSR_MAX_XFER_SECTORS,
118 .cmd_per_lun = ARCMSR_MAX_CMD_PERLUN,
119 .use_clustering = ENABLE_CLUSTERING,
120 .shost_attrs = arcmsr_host_attrs,
121 };
122
123 static struct pci_device_id arcmsr_device_id_table[] = {
124 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1110)},
125 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1120)},
126 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1130)},
127 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1160)},
128 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1170)},
129 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1210)},
130 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1220)},
131 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1230)},
132 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1260)},
133 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1270)},
134 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1280)},
135 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1380)},
136 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1381)},
137 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1680)},
138 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1681)},
139 {0, 0}, /* Terminating entry */
140 };
141 MODULE_DEVICE_TABLE(pci, arcmsr_device_id_table);
142 static struct pci_driver arcmsr_pci_driver = {
143 .name = "arcmsr",
144 .id_table = arcmsr_device_id_table,
145 .probe = arcmsr_probe,
146 .remove = arcmsr_remove,
147 .shutdown = arcmsr_shutdown
148 };
149
150 static irqreturn_t arcmsr_do_interrupt(int irq, void *dev_id,
151 struct pt_regs *regs)
152 {
153 irqreturn_t handle_state;
154 struct AdapterControlBlock *acb;
155 unsigned long flags;
156
157 acb = (struct AdapterControlBlock *)dev_id;
158
159 spin_lock_irqsave(acb->host->host_lock, flags);
160 handle_state = arcmsr_interrupt(acb);
161 spin_unlock_irqrestore(acb->host->host_lock, flags);
162 return handle_state;
163 }
164
165 static int arcmsr_bios_param(struct scsi_device *sdev,
166 struct block_device *bdev, sector_t capacity, int *geom)
167 {
168 int ret, heads, sectors, cylinders, total_capacity;
169 unsigned char *buffer;/* return copy of block device's partition table */
170
171 buffer = scsi_bios_ptable(bdev);
172 if (buffer) {
173 ret = scsi_partsize(buffer, capacity, &geom[2], &geom[0], &geom[1]);
174 kfree(buffer);
175 if (ret != -1)
176 return ret;
177 }
178 total_capacity = capacity;
179 heads = 64;
180 sectors = 32;
181 cylinders = total_capacity / (heads * sectors);
182 if (cylinders > 1024) {
183 heads = 255;
184 sectors = 63;
185 cylinders = total_capacity / (heads * sectors);
186 }
187 geom[0] = heads;
188 geom[1] = sectors;
189 geom[2] = cylinders;
190 return 0;
191 }
192
193 static int arcmsr_alloc_ccb_pool(struct AdapterControlBlock *acb)
194 {
195 struct pci_dev *pdev = acb->pdev;
196 struct MessageUnit __iomem *reg = acb->pmu;
197 u32 ccb_phyaddr_hi32;
198 void *dma_coherent;
199 dma_addr_t dma_coherent_handle, dma_addr;
200 struct CommandControlBlock *ccb_tmp;
201 int i, j;
202
203 dma_coherent = dma_alloc_coherent(&pdev->dev,
204 ARCMSR_MAX_FREECCB_NUM *
205 sizeof (struct CommandControlBlock) + 0x20,
206 &dma_coherent_handle, GFP_KERNEL);
207 if (!dma_coherent)
208 return -ENOMEM;
209
210 acb->dma_coherent = dma_coherent;
211 acb->dma_coherent_handle = dma_coherent_handle;
212
213 if (((unsigned long)dma_coherent & 0x1F)) {
214 dma_coherent = dma_coherent +
215 (0x20 - ((unsigned long)dma_coherent & 0x1F));
216 dma_coherent_handle = dma_coherent_handle +
217 (0x20 - ((unsigned long)dma_coherent_handle & 0x1F));
218 }
219
220 dma_addr = dma_coherent_handle;
221 ccb_tmp = (struct CommandControlBlock *)dma_coherent;
222 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
223 ccb_tmp->cdb_shifted_phyaddr = dma_addr >> 5;
224 ccb_tmp->acb = acb;
225 acb->pccb_pool[i] = ccb_tmp;
226 list_add_tail(&ccb_tmp->list, &acb->ccb_free_list);
227 dma_addr = dma_addr + sizeof (struct CommandControlBlock);
228 ccb_tmp++;
229 }
230
231 acb->vir2phy_offset = (unsigned long)ccb_tmp -
232 (unsigned long)dma_addr;
233 for (i = 0; i < ARCMSR_MAX_TARGETID; i++)
234 for (j = 0; j < ARCMSR_MAX_TARGETLUN; j++)
235 acb->devstate[i][j] = ARECA_RAID_GOOD;
236
237 /*
238 ** here we need to tell iop 331 our ccb_tmp.HighPart
239 ** if ccb_tmp.HighPart is not zero
240 */
241 ccb_phyaddr_hi32 = (uint32_t) ((dma_coherent_handle >> 16) >> 16);
242 if (ccb_phyaddr_hi32 != 0) {
243 writel(ARCMSR_SIGNATURE_SET_CONFIG, &reg->message_rwbuffer[0]);
244 writel(ccb_phyaddr_hi32, &reg->message_rwbuffer[1]);
245 writel(ARCMSR_INBOUND_MESG0_SET_CONFIG, &reg->inbound_msgaddr0);
246 if (arcmsr_wait_msgint_ready(acb))
247 printk(KERN_NOTICE "arcmsr%d: "
248 "'set ccb high part physical address' timeout\n",
249 acb->host->host_no);
250 }
251
252 writel(readl(&reg->outbound_intmask) |
253 ARCMSR_MU_OUTBOUND_ALL_INTMASKENABLE,
254 &reg->outbound_intmask);
255 return 0;
256 }
257
258 static int arcmsr_probe(struct pci_dev *pdev,
259 const struct pci_device_id *id)
260 {
261 struct Scsi_Host *host;
262 struct AdapterControlBlock *acb;
263 uint8_t bus, dev_fun;
264 int error;
265
266 error = pci_enable_device(pdev);
267 if (error)
268 goto out;
269 pci_set_master(pdev);
270
271 host = scsi_host_alloc(&arcmsr_scsi_host_template,
272 sizeof(struct AdapterControlBlock));
273 if (!host) {
274 error = -ENOMEM;
275 goto out_disable_device;
276 }
277 acb = (struct AdapterControlBlock *)host->hostdata;
278 memset(acb, 0, sizeof (struct AdapterControlBlock));
279
280 error = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
281 if (error) {
282 error = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
283 if (error) {
284 printk(KERN_WARNING
285 "scsi%d: No suitable DMA mask available\n",
286 host->host_no);
287 goto out_host_put;
288 }
289 }
290 bus = pdev->bus->number;
291 dev_fun = pdev->devfn;
292 acb->host = host;
293 acb->pdev = pdev;
294 host->max_sectors = ARCMSR_MAX_XFER_SECTORS;
295 host->max_lun = ARCMSR_MAX_TARGETLUN;
296 host->max_id = ARCMSR_MAX_TARGETID;/*16:8*/
297 host->max_cmd_len = 16; /*this is issue of 64bit LBA, over 2T byte*/
298 host->sg_tablesize = ARCMSR_MAX_SG_ENTRIES;
299 host->can_queue = ARCMSR_MAX_FREECCB_NUM; /* max simultaneous cmds */
300 host->cmd_per_lun = ARCMSR_MAX_CMD_PERLUN;
301 host->this_id = ARCMSR_SCSI_INITIATOR_ID;
302 host->unique_id = (bus << 8) | dev_fun;
303 host->irq = pdev->irq;
304 error = pci_request_regions(pdev, "arcmsr");
305 if (error)
306 goto out_host_put;
307
308 acb->pmu = ioremap(pci_resource_start(pdev, 0),
309 pci_resource_len(pdev, 0));
310 if (!acb->pmu) {
311 printk(KERN_NOTICE "arcmsr%d: memory"
312 " mapping region fail \n", acb->host->host_no);
313 goto out_release_regions;
314 }
315 acb->acb_flags |= (ACB_F_MESSAGE_WQBUFFER_CLEARED |
316 ACB_F_MESSAGE_RQBUFFER_CLEARED |
317 ACB_F_MESSAGE_WQBUFFER_READED);
318 acb->acb_flags &= ~ACB_F_SCSISTOPADAPTER;
319 INIT_LIST_HEAD(&acb->ccb_free_list);
320
321 error = arcmsr_alloc_ccb_pool(acb);
322 if (error)
323 goto out_iounmap;
324
325 error = request_irq(pdev->irq, arcmsr_do_interrupt,
326 SA_INTERRUPT | SA_SHIRQ, "arcmsr", acb);
327 if (error)
328 goto out_free_ccb_pool;
329
330 arcmsr_iop_init(acb);
331 pci_set_drvdata(pdev, host);
332
333 error = scsi_add_host(host, &pdev->dev);
334 if (error)
335 goto out_free_irq;
336
337 error = arcmsr_alloc_sysfs_attr(acb);
338 if (error)
339 goto out_free_sysfs;
340
341 scsi_scan_host(host);
342 return 0;
343 out_free_sysfs:
344 out_free_irq:
345 free_irq(pdev->irq, acb);
346 out_free_ccb_pool:
347 arcmsr_free_ccb_pool(acb);
348 out_iounmap:
349 iounmap(acb->pmu);
350 out_release_regions:
351 pci_release_regions(pdev);
352 out_host_put:
353 scsi_host_put(host);
354 out_disable_device:
355 pci_disable_device(pdev);
356 out:
357 return error;
358 }
359
360 static void arcmsr_abort_allcmd(struct AdapterControlBlock *acb)
361 {
362 struct MessageUnit __iomem *reg = acb->pmu;
363
364 writel(ARCMSR_INBOUND_MESG0_ABORT_CMD, &reg->inbound_msgaddr0);
365 if (arcmsr_wait_msgint_ready(acb))
366 printk(KERN_NOTICE
367 "arcmsr%d: wait 'abort all outstanding command' timeout \n"
368 , acb->host->host_no);
369 }
370
371 static void arcmsr_pci_unmap_dma(struct CommandControlBlock *ccb)
372 {
373 struct AdapterControlBlock *acb = ccb->acb;
374 struct scsi_cmnd *pcmd = ccb->pcmd;
375
376 if (pcmd->use_sg != 0) {
377 struct scatterlist *sl;
378
379 sl = (struct scatterlist *)pcmd->request_buffer;
380 pci_unmap_sg(acb->pdev, sl, pcmd->use_sg, pcmd->sc_data_direction);
381 }
382 else if (pcmd->request_bufflen != 0)
383 pci_unmap_single(acb->pdev,
384 pcmd->SCp.dma_handle,
385 pcmd->request_bufflen, pcmd->sc_data_direction);
386 }
387
388 static void arcmsr_ccb_complete(struct CommandControlBlock *ccb, int stand_flag)
389 {
390 struct AdapterControlBlock *acb = ccb->acb;
391 struct scsi_cmnd *pcmd = ccb->pcmd;
392
393 arcmsr_pci_unmap_dma(ccb);
394 if (stand_flag == 1)
395 atomic_dec(&acb->ccboutstandingcount);
396 ccb->startdone = ARCMSR_CCB_DONE;
397 ccb->ccb_flags = 0;
398 list_add_tail(&ccb->list, &acb->ccb_free_list);
399 pcmd->scsi_done(pcmd);
400 }
401
402 static void arcmsr_remove(struct pci_dev *pdev)
403 {
404 struct Scsi_Host *host = pci_get_drvdata(pdev);
405 struct AdapterControlBlock *acb =
406 (struct AdapterControlBlock *) host->hostdata;
407 struct MessageUnit __iomem *reg = acb->pmu;
408 int poll_count = 0;
409
410 arcmsr_free_sysfs_attr(acb);
411 scsi_remove_host(host);
412 arcmsr_stop_adapter_bgrb(acb);
413 arcmsr_flush_adapter_cache(acb);
414 writel(readl(&reg->outbound_intmask) |
415 ARCMSR_MU_OUTBOUND_ALL_INTMASKENABLE,
416 &reg->outbound_intmask);
417 acb->acb_flags |= ACB_F_SCSISTOPADAPTER;
418 acb->acb_flags &= ~ACB_F_IOP_INITED;
419
420 for (poll_count = 0; poll_count < 256; poll_count++) {
421 if (!atomic_read(&acb->ccboutstandingcount))
422 break;
423 arcmsr_interrupt(acb);
424 msleep(25);
425 }
426
427 if (atomic_read(&acb->ccboutstandingcount)) {
428 int i;
429
430 arcmsr_abort_allcmd(acb);
431 for (i = 0; i < ARCMSR_MAX_OUTSTANDING_CMD; i++)
432 readl(&reg->outbound_queueport);
433 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
434 struct CommandControlBlock *ccb = acb->pccb_pool[i];
435 if (ccb->startdone == ARCMSR_CCB_START) {
436 ccb->startdone = ARCMSR_CCB_ABORTED;
437 ccb->pcmd->result = DID_ABORT << 16;
438 arcmsr_ccb_complete(ccb, 1);
439 }
440 }
441 }
442
443 free_irq(pdev->irq, acb);
444 iounmap(acb->pmu);
445 arcmsr_free_ccb_pool(acb);
446 pci_release_regions(pdev);
447
448 scsi_host_put(host);
449
450 pci_disable_device(pdev);
451 pci_set_drvdata(pdev, NULL);
452 }
453
454 static void arcmsr_shutdown(struct pci_dev *pdev)
455 {
456 struct Scsi_Host *host = pci_get_drvdata(pdev);
457 struct AdapterControlBlock *acb =
458 (struct AdapterControlBlock *)host->hostdata;
459
460 arcmsr_stop_adapter_bgrb(acb);
461 arcmsr_flush_adapter_cache(acb);
462 }
463
464 static int arcmsr_module_init(void)
465 {
466 int error = 0;
467
468 error = pci_register_driver(&arcmsr_pci_driver);
469 return error;
470 }
471
472 static void arcmsr_module_exit(void)
473 {
474 pci_unregister_driver(&arcmsr_pci_driver);
475 }
476 module_init(arcmsr_module_init);
477 module_exit(arcmsr_module_exit);
478
479 static u32 arcmsr_disable_outbound_ints(struct AdapterControlBlock *acb)
480 {
481 struct MessageUnit __iomem *reg = acb->pmu;
482 u32 orig_mask = readl(&reg->outbound_intmask);
483
484 writel(orig_mask | ARCMSR_MU_OUTBOUND_ALL_INTMASKENABLE,
485 &reg->outbound_intmask);
486 return orig_mask;
487 }
488
489 static void arcmsr_enable_outbound_ints(struct AdapterControlBlock *acb,
490 u32 orig_mask)
491 {
492 struct MessageUnit __iomem *reg = acb->pmu;
493 u32 mask;
494
495 mask = orig_mask & ~(ARCMSR_MU_OUTBOUND_POSTQUEUE_INTMASKENABLE |
496 ARCMSR_MU_OUTBOUND_DOORBELL_INTMASKENABLE);
497 writel(mask, &reg->outbound_intmask);
498 }
499
500 static void arcmsr_flush_adapter_cache(struct AdapterControlBlock *acb)
501 {
502 struct MessageUnit __iomem *reg=acb->pmu;
503
504 writel(ARCMSR_INBOUND_MESG0_FLUSH_CACHE, &reg->inbound_msgaddr0);
505 if (arcmsr_wait_msgint_ready(acb))
506 printk(KERN_NOTICE
507 "arcmsr%d: wait 'flush adapter cache' timeout \n"
508 , acb->host->host_no);
509 }
510
511 static void arcmsr_report_sense_info(struct CommandControlBlock *ccb)
512 {
513 struct scsi_cmnd *pcmd = ccb->pcmd;
514 struct SENSE_DATA *sensebuffer = (struct SENSE_DATA *)pcmd->sense_buffer;
515
516 pcmd->result = DID_OK << 16;
517 if (sensebuffer) {
518 int sense_data_length =
519 sizeof (struct SENSE_DATA) < sizeof (pcmd->sense_buffer)
520 ? sizeof (struct SENSE_DATA) : sizeof (pcmd->sense_buffer);
521 memset(sensebuffer, 0, sizeof (pcmd->sense_buffer));
522 memcpy(sensebuffer, ccb->arcmsr_cdb.SenseData, sense_data_length);
523 sensebuffer->ErrorCode = SCSI_SENSE_CURRENT_ERRORS;
524 sensebuffer->Valid = 1;
525 }
526 }
527
528 static uint8_t arcmsr_wait_msgint_ready(struct AdapterControlBlock *acb)
529 {
530 struct MessageUnit __iomem *reg = acb->pmu;
531 uint32_t Index;
532 uint8_t Retries = 0x00;
533
534 do {
535 for (Index = 0; Index < 100; Index++) {
536 if (readl(&reg->outbound_intstatus)
537 & ARCMSR_MU_OUTBOUND_MESSAGE0_INT) {
538 writel(ARCMSR_MU_OUTBOUND_MESSAGE0_INT
539 , &reg->outbound_intstatus);
540 return 0x00;
541 }
542 msleep_interruptible(10);
543 }/*max 1 seconds*/
544 } while (Retries++ < 20);/*max 20 sec*/
545 return 0xff;
546 }
547
548 static void arcmsr_build_ccb(struct AdapterControlBlock *acb,
549 struct CommandControlBlock *ccb, struct scsi_cmnd *pcmd)
550 {
551 struct ARCMSR_CDB *arcmsr_cdb = (struct ARCMSR_CDB *)&ccb->arcmsr_cdb;
552 int8_t *psge = (int8_t *)&arcmsr_cdb->u;
553 uint32_t address_lo, address_hi;
554 int arccdbsize = 0x30;
555
556 ccb->pcmd = pcmd;
557 memset(arcmsr_cdb, 0, sizeof (struct ARCMSR_CDB));
558 arcmsr_cdb->Bus = 0;
559 arcmsr_cdb->TargetID = pcmd->device->id;
560 arcmsr_cdb->LUN = pcmd->device->lun;
561 arcmsr_cdb->Function = 1;
562 arcmsr_cdb->CdbLength = (uint8_t)pcmd->cmd_len;
563 arcmsr_cdb->Context = (unsigned long)arcmsr_cdb;
564 memcpy(arcmsr_cdb->Cdb, pcmd->cmnd, pcmd->cmd_len);
565 if (pcmd->use_sg) {
566 int length, sgcount, i, cdb_sgcount = 0;
567 struct scatterlist *sl;
568
569 /* Get Scatter Gather List from scsiport. */
570 sl = (struct scatterlist *) pcmd->request_buffer;
571 sgcount = pci_map_sg(acb->pdev, sl, pcmd->use_sg,
572 pcmd->sc_data_direction);
573 /* map stor port SG list to our iop SG List. */
574 for (i = 0; i < sgcount; i++) {
575 /* Get the physical address of the current data pointer */
576 length = cpu_to_le32(sg_dma_len(sl));
577 address_lo = cpu_to_le32(dma_addr_lo32(sg_dma_address(sl)));
578 address_hi = cpu_to_le32(dma_addr_hi32(sg_dma_address(sl)));
579 if (address_hi == 0) {
580 struct SG32ENTRY *pdma_sg = (struct SG32ENTRY *)psge;
581
582 pdma_sg->address = address_lo;
583 pdma_sg->length = length;
584 psge += sizeof (struct SG32ENTRY);
585 arccdbsize += sizeof (struct SG32ENTRY);
586 } else {
587 struct SG64ENTRY *pdma_sg = (struct SG64ENTRY *)psge;
588
589 pdma_sg->addresshigh = address_hi;
590 pdma_sg->address = address_lo;
591 pdma_sg->length = length|IS_SG64_ADDR;
592 psge += sizeof (struct SG64ENTRY);
593 arccdbsize += sizeof (struct SG64ENTRY);
594 }
595 sl++;
596 cdb_sgcount++;
597 }
598 arcmsr_cdb->sgcount = (uint8_t)cdb_sgcount;
599 arcmsr_cdb->DataLength = pcmd->request_bufflen;
600 if ( arccdbsize > 256)
601 arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_SGL_BSIZE;
602 } else if (pcmd->request_bufflen) {
603 dma_addr_t dma_addr;
604 dma_addr = pci_map_single(acb->pdev, pcmd->request_buffer,
605 pcmd->request_bufflen, pcmd->sc_data_direction);
606 pcmd->SCp.dma_handle = dma_addr;
607 address_lo = cpu_to_le32(dma_addr_lo32(dma_addr));
608 address_hi = cpu_to_le32(dma_addr_hi32(dma_addr));
609 if (address_hi == 0) {
610 struct SG32ENTRY *pdma_sg = (struct SG32ENTRY *)psge;
611 pdma_sg->address = address_lo;
612 pdma_sg->length = pcmd->request_bufflen;
613 } else {
614 struct SG64ENTRY *pdma_sg = (struct SG64ENTRY *)psge;
615 pdma_sg->addresshigh = address_hi;
616 pdma_sg->address = address_lo;
617 pdma_sg->length = pcmd->request_bufflen|IS_SG64_ADDR;
618 }
619 arcmsr_cdb->sgcount = 1;
620 arcmsr_cdb->DataLength = pcmd->request_bufflen;
621 }
622 if (pcmd->sc_data_direction == DMA_TO_DEVICE ) {
623 arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_WRITE;
624 ccb->ccb_flags |= CCB_FLAG_WRITE;
625 }
626 }
627
628 static void arcmsr_post_ccb(struct AdapterControlBlock *acb, struct CommandControlBlock *ccb)
629 {
630 struct MessageUnit __iomem *reg = acb->pmu;
631 uint32_t cdb_shifted_phyaddr = ccb->cdb_shifted_phyaddr;
632 struct ARCMSR_CDB *arcmsr_cdb = (struct ARCMSR_CDB *)&ccb->arcmsr_cdb;
633
634 atomic_inc(&acb->ccboutstandingcount);
635 ccb->startdone = ARCMSR_CCB_START;
636 if (arcmsr_cdb->Flags & ARCMSR_CDB_FLAG_SGL_BSIZE)
637 writel(cdb_shifted_phyaddr | ARCMSR_CCBPOST_FLAG_SGL_BSIZE,
638 &reg->inbound_queueport);
639 else
640 writel(cdb_shifted_phyaddr, &reg->inbound_queueport);
641 }
642
643 void arcmsr_post_Qbuffer(struct AdapterControlBlock *acb)
644 {
645 struct MessageUnit __iomem *reg = acb->pmu;
646 struct QBUFFER __iomem *pwbuffer = (struct QBUFFER __iomem *) &reg->message_wbuffer;
647 uint8_t __iomem *iop_data = (uint8_t __iomem *) pwbuffer->data;
648 int32_t allxfer_len = 0;
649
650 if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_READED) {
651 acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED);
652 while ((acb->wqbuf_firstindex != acb->wqbuf_lastindex)
653 && (allxfer_len < 124)) {
654 writeb(acb->wqbuffer[acb->wqbuf_firstindex], iop_data);
655 acb->wqbuf_firstindex++;
656 acb->wqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
657 iop_data++;
658 allxfer_len++;
659 }
660 writel(allxfer_len, &pwbuffer->data_len);
661 writel(ARCMSR_INBOUND_DRIVER_DATA_WRITE_OK
662 , &reg->inbound_doorbell);
663 }
664 }
665
666 static void arcmsr_stop_adapter_bgrb(struct AdapterControlBlock *acb)
667 {
668 struct MessageUnit __iomem *reg = acb->pmu;
669
670 acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
671 writel(ARCMSR_INBOUND_MESG0_STOP_BGRB, &reg->inbound_msgaddr0);
672 if (arcmsr_wait_msgint_ready(acb))
673 printk(KERN_NOTICE
674 "arcmsr%d: wait 'stop adapter background rebulid' timeout \n"
675 , acb->host->host_no);
676 }
677
678 static void arcmsr_free_ccb_pool(struct AdapterControlBlock *acb)
679 {
680 dma_free_coherent(&acb->pdev->dev,
681 ARCMSR_MAX_FREECCB_NUM * sizeof (struct CommandControlBlock) + 0x20,
682 acb->dma_coherent,
683 acb->dma_coherent_handle);
684 }
685
686 static irqreturn_t arcmsr_interrupt(struct AdapterControlBlock *acb)
687 {
688 struct MessageUnit __iomem *reg = acb->pmu;
689 struct CommandControlBlock *ccb;
690 uint32_t flag_ccb, outbound_intstatus, outbound_doorbell;
691
692 outbound_intstatus = readl(&reg->outbound_intstatus)
693 & acb->outbound_int_enable;
694 writel(outbound_intstatus, &reg->outbound_intstatus);
695 if (outbound_intstatus & ARCMSR_MU_OUTBOUND_DOORBELL_INT) {
696 outbound_doorbell = readl(&reg->outbound_doorbell);
697 writel(outbound_doorbell, &reg->outbound_doorbell);
698 if (outbound_doorbell & ARCMSR_OUTBOUND_IOP331_DATA_WRITE_OK) {
699 struct QBUFFER __iomem * prbuffer =
700 (struct QBUFFER __iomem *) &reg->message_rbuffer;
701 uint8_t __iomem * iop_data = (uint8_t __iomem *)prbuffer->data;
702 int32_t my_empty_len, iop_len, rqbuf_firstindex, rqbuf_lastindex;
703
704 rqbuf_lastindex = acb->rqbuf_lastindex;
705 rqbuf_firstindex = acb->rqbuf_firstindex;
706 iop_len = readl(&prbuffer->data_len);
707 my_empty_len = (rqbuf_firstindex - rqbuf_lastindex - 1)
708 &(ARCMSR_MAX_QBUFFER - 1);
709 if (my_empty_len >= iop_len) {
710 while (iop_len > 0) {
711 acb->rqbuffer[acb->rqbuf_lastindex] = readb(iop_data);
712 acb->rqbuf_lastindex++;
713 acb->rqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
714 iop_data++;
715 iop_len--;
716 }
717 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK,
718 &reg->inbound_doorbell);
719 } else
720 acb->acb_flags |= ACB_F_IOPDATA_OVERFLOW;
721 }
722 if (outbound_doorbell & ARCMSR_OUTBOUND_IOP331_DATA_READ_OK) {
723 acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_READED;
724 if (acb->wqbuf_firstindex != acb->wqbuf_lastindex) {
725 struct QBUFFER __iomem * pwbuffer =
726 (struct QBUFFER __iomem *) &reg->message_wbuffer;
727 uint8_t __iomem * iop_data = (uint8_t __iomem *) pwbuffer->data;
728 int32_t allxfer_len = 0;
729
730 acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED);
731 while ((acb->wqbuf_firstindex != acb->wqbuf_lastindex)
732 && (allxfer_len < 124)) {
733 writeb(acb->wqbuffer[acb->wqbuf_firstindex], iop_data);
734 acb->wqbuf_firstindex++;
735 acb->wqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
736 iop_data++;
737 allxfer_len++;
738 }
739 writel(allxfer_len, &pwbuffer->data_len);
740 writel(ARCMSR_INBOUND_DRIVER_DATA_WRITE_OK,
741 &reg->inbound_doorbell);
742 }
743 if (acb->wqbuf_firstindex == acb->wqbuf_lastindex)
744 acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_CLEARED;
745 }
746 }
747 if (outbound_intstatus & ARCMSR_MU_OUTBOUND_POSTQUEUE_INT) {
748 int id, lun;
749 /*
750 ****************************************************************
751 ** areca cdb command done
752 ****************************************************************
753 */
754 while (1) {
755 if ((flag_ccb = readl(&reg->outbound_queueport)) == 0xFFFFFFFF)
756 break;/*chip FIFO no ccb for completion already*/
757 /* check if command done with no error*/
758 ccb = (struct CommandControlBlock *)(acb->vir2phy_offset +
759 (flag_ccb << 5));
760 if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) {
761 if (ccb->startdone == ARCMSR_CCB_ABORTED) {
762 struct scsi_cmnd *abortcmd=ccb->pcmd;
763 if (abortcmd) {
764 abortcmd->result |= DID_ABORT >> 16;
765 arcmsr_ccb_complete(ccb, 1);
766 printk(KERN_NOTICE
767 "arcmsr%d: ccb='0x%p' isr got aborted command \n"
768 , acb->host->host_no, ccb);
769 }
770 continue;
771 }
772 printk(KERN_NOTICE
773 "arcmsr%d: isr get an illegal ccb command done acb='0x%p'"
774 "ccb='0x%p' ccbacb='0x%p' startdone = 0x%x"
775 " ccboutstandingcount=%d \n"
776 , acb->host->host_no
777 , acb
778 , ccb
779 , ccb->acb
780 , ccb->startdone
781 , atomic_read(&acb->ccboutstandingcount));
782 continue;
783 }
784 id = ccb->pcmd->device->id;
785 lun = ccb->pcmd->device->lun;
786 if (!(flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR)) {
787 if (acb->devstate[id][lun] == ARECA_RAID_GONE)
788 acb->devstate[id][lun] = ARECA_RAID_GOOD;
789 ccb->pcmd->result = DID_OK << 16;
790 arcmsr_ccb_complete(ccb, 1);
791 } else {
792 switch(ccb->arcmsr_cdb.DeviceStatus) {
793 case ARCMSR_DEV_SELECT_TIMEOUT: {
794 acb->devstate[id][lun] = ARECA_RAID_GONE;
795 ccb->pcmd->result = DID_TIME_OUT << 16;
796 arcmsr_ccb_complete(ccb, 1);
797 }
798 break;
799 case ARCMSR_DEV_ABORTED:
800 case ARCMSR_DEV_INIT_FAIL: {
801 acb->devstate[id][lun] = ARECA_RAID_GONE;
802 ccb->pcmd->result = DID_BAD_TARGET << 16;
803 arcmsr_ccb_complete(ccb, 1);
804 }
805 break;
806 case ARCMSR_DEV_CHECK_CONDITION: {
807 acb->devstate[id][lun] = ARECA_RAID_GOOD;
808 arcmsr_report_sense_info(ccb);
809 arcmsr_ccb_complete(ccb, 1);
810 }
811 break;
812 default:
813 printk(KERN_NOTICE
814 "arcmsr%d: scsi id=%d lun=%d"
815 " isr get command error done,"
816 "but got unknown DeviceStatus = 0x%x \n"
817 , acb->host->host_no
818 , id
819 , lun
820 , ccb->arcmsr_cdb.DeviceStatus);
821 acb->devstate[id][lun] = ARECA_RAID_GONE;
822 ccb->pcmd->result = DID_NO_CONNECT << 16;
823 arcmsr_ccb_complete(ccb, 1);
824 break;
825 }
826 }
827 }/*drain reply FIFO*/
828 }
829 if (!(outbound_intstatus & ARCMSR_MU_OUTBOUND_HANDLE_INT))
830 return IRQ_NONE;
831 return IRQ_HANDLED;
832 }
833
834 static void arcmsr_iop_parking(struct AdapterControlBlock *acb)
835 {
836 if (acb) {
837 /* stop adapter background rebuild */
838 if (acb->acb_flags & ACB_F_MSG_START_BGRB) {
839 acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
840 arcmsr_stop_adapter_bgrb(acb);
841 arcmsr_flush_adapter_cache(acb);
842 }
843 }
844 }
845
846 static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb, struct scsi_cmnd *cmd)
847 {
848 struct MessageUnit __iomem *reg = acb->pmu;
849 struct CMD_MESSAGE_FIELD *pcmdmessagefld;
850 int retvalue = 0, transfer_len = 0;
851 char *buffer;
852 uint32_t controlcode = (uint32_t ) cmd->cmnd[5] << 24 |
853 (uint32_t ) cmd->cmnd[6] << 16 |
854 (uint32_t ) cmd->cmnd[7] << 8 |
855 (uint32_t ) cmd->cmnd[8];
856 /* 4 bytes: Areca io control code */
857 if (cmd->use_sg) {
858 struct scatterlist *sg = (struct scatterlist *)cmd->request_buffer;
859
860 buffer = kmap_atomic(sg->page, KM_IRQ0) + sg->offset;
861 if (cmd->use_sg > 1) {
862 retvalue = ARCMSR_MESSAGE_FAIL;
863 goto message_out;
864 }
865 transfer_len += sg->length;
866 } else {
867 buffer = cmd->request_buffer;
868 transfer_len = cmd->request_bufflen;
869 }
870 if (transfer_len > sizeof(struct CMD_MESSAGE_FIELD)) {
871 retvalue = ARCMSR_MESSAGE_FAIL;
872 goto message_out;
873 }
874 pcmdmessagefld = (struct CMD_MESSAGE_FIELD *) buffer;
875 switch(controlcode) {
876 case ARCMSR_MESSAGE_READ_RQBUFFER: {
877 unsigned long *ver_addr;
878 dma_addr_t buf_handle;
879 uint8_t *pQbuffer, *ptmpQbuffer;
880 int32_t allxfer_len = 0;
881
882 ver_addr = pci_alloc_consistent(acb->pdev, 1032, &buf_handle);
883 if (!ver_addr) {
884 retvalue = ARCMSR_MESSAGE_FAIL;
885 goto message_out;
886 }
887 ptmpQbuffer = (uint8_t *) ver_addr;
888 while ((acb->rqbuf_firstindex != acb->rqbuf_lastindex)
889 && (allxfer_len < 1031)) {
890 pQbuffer = &acb->rqbuffer[acb->rqbuf_firstindex];
891 memcpy(ptmpQbuffer, pQbuffer, 1);
892 acb->rqbuf_firstindex++;
893 acb->rqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
894 ptmpQbuffer++;
895 allxfer_len++;
896 }
897 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
898 struct QBUFFER __iomem * prbuffer = (struct QBUFFER __iomem *)
899 &reg->message_rbuffer;
900 uint8_t __iomem * iop_data = (uint8_t __iomem *)prbuffer->data;
901 int32_t iop_len;
902
903 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
904 iop_len = readl(&prbuffer->data_len);
905 while (iop_len > 0) {
906 acb->rqbuffer[acb->rqbuf_lastindex] = readb(iop_data);
907 acb->rqbuf_lastindex++;
908 acb->rqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
909 iop_data++;
910 iop_len--;
911 }
912 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK,
913 &reg->inbound_doorbell);
914 }
915 memcpy(pcmdmessagefld->messagedatabuffer,
916 (uint8_t *)ver_addr, allxfer_len);
917 pcmdmessagefld->cmdmessage.Length = allxfer_len;
918 pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK;
919 pci_free_consistent(acb->pdev, 1032, ver_addr, buf_handle);
920 }
921 break;
922 case ARCMSR_MESSAGE_WRITE_WQBUFFER: {
923 unsigned long *ver_addr;
924 dma_addr_t buf_handle;
925 int32_t my_empty_len, user_len, wqbuf_firstindex, wqbuf_lastindex;
926 uint8_t *pQbuffer, *ptmpuserbuffer;
927
928 ver_addr = pci_alloc_consistent(acb->pdev, 1032, &buf_handle);
929 if (!ver_addr) {
930 retvalue = ARCMSR_MESSAGE_FAIL;
931 goto message_out;
932 }
933 ptmpuserbuffer = (uint8_t *)ver_addr;
934 user_len = pcmdmessagefld->cmdmessage.Length;
935 memcpy(ptmpuserbuffer, pcmdmessagefld->messagedatabuffer, user_len);
936 wqbuf_lastindex = acb->wqbuf_lastindex;
937 wqbuf_firstindex = acb->wqbuf_firstindex;
938 if (wqbuf_lastindex != wqbuf_firstindex) {
939 struct SENSE_DATA *sensebuffer =
940 (struct SENSE_DATA *)cmd->sense_buffer;
941 arcmsr_post_Qbuffer(acb);
942 /* has error report sensedata */
943 sensebuffer->ErrorCode = 0x70;
944 sensebuffer->SenseKey = ILLEGAL_REQUEST;
945 sensebuffer->AdditionalSenseLength = 0x0A;
946 sensebuffer->AdditionalSenseCode = 0x20;
947 sensebuffer->Valid = 1;
948 retvalue = ARCMSR_MESSAGE_FAIL;
949 } else {
950 my_empty_len = (wqbuf_firstindex-wqbuf_lastindex - 1)
951 &(ARCMSR_MAX_QBUFFER - 1);
952 if (my_empty_len >= user_len) {
953 while (user_len > 0) {
954 pQbuffer =
955 &acb->wqbuffer[acb->wqbuf_lastindex];
956 memcpy(pQbuffer, ptmpuserbuffer, 1);
957 acb->wqbuf_lastindex++;
958 acb->wqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
959 ptmpuserbuffer++;
960 user_len--;
961 }
962 if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_CLEARED) {
963 acb->acb_flags &=
964 ~ACB_F_MESSAGE_WQBUFFER_CLEARED;
965 arcmsr_post_Qbuffer(acb);
966 }
967 } else {
968 /* has error report sensedata */
969 struct SENSE_DATA *sensebuffer =
970 (struct SENSE_DATA *)cmd->sense_buffer;
971 sensebuffer->ErrorCode = 0x70;
972 sensebuffer->SenseKey = ILLEGAL_REQUEST;
973 sensebuffer->AdditionalSenseLength = 0x0A;
974 sensebuffer->AdditionalSenseCode = 0x20;
975 sensebuffer->Valid = 1;
976 retvalue = ARCMSR_MESSAGE_FAIL;
977 }
978 }
979 pci_free_consistent(acb->pdev, 1032, ver_addr, buf_handle);
980 }
981 break;
982 case ARCMSR_MESSAGE_CLEAR_RQBUFFER: {
983 uint8_t *pQbuffer = acb->rqbuffer;
984
985 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
986 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
987 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK,
988 &reg->inbound_doorbell);
989 }
990 acb->acb_flags |= ACB_F_MESSAGE_RQBUFFER_CLEARED;
991 acb->rqbuf_firstindex = 0;
992 acb->rqbuf_lastindex = 0;
993 memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER);
994 pcmdmessagefld->cmdmessage.ReturnCode =
995 ARCMSR_MESSAGE_RETURNCODE_OK;
996 }
997 break;
998 case ARCMSR_MESSAGE_CLEAR_WQBUFFER: {
999 uint8_t *pQbuffer = acb->wqbuffer;
1000
1001 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
1002 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
1003 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK
1004 , &reg->inbound_doorbell);
1005 }
1006 acb->acb_flags |=
1007 (ACB_F_MESSAGE_WQBUFFER_CLEARED |
1008 ACB_F_MESSAGE_WQBUFFER_READED);
1009 acb->wqbuf_firstindex = 0;
1010 acb->wqbuf_lastindex = 0;
1011 memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER);
1012 pcmdmessagefld->cmdmessage.ReturnCode =
1013 ARCMSR_MESSAGE_RETURNCODE_OK;
1014 }
1015 break;
1016 case ARCMSR_MESSAGE_CLEAR_ALLQBUFFER: {
1017 uint8_t *pQbuffer;
1018
1019 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
1020 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
1021 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK
1022 , &reg->inbound_doorbell);
1023 }
1024 acb->acb_flags |=
1025 (ACB_F_MESSAGE_WQBUFFER_CLEARED
1026 | ACB_F_MESSAGE_RQBUFFER_CLEARED
1027 | ACB_F_MESSAGE_WQBUFFER_READED);
1028 acb->rqbuf_firstindex = 0;
1029 acb->rqbuf_lastindex = 0;
1030 acb->wqbuf_firstindex = 0;
1031 acb->wqbuf_lastindex = 0;
1032 pQbuffer = acb->rqbuffer;
1033 memset(pQbuffer, 0, sizeof (struct QBUFFER));
1034 pQbuffer = acb->wqbuffer;
1035 memset(pQbuffer, 0, sizeof (struct QBUFFER));
1036 pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK;
1037 }
1038 break;
1039 case ARCMSR_MESSAGE_RETURN_CODE_3F: {
1040 pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_3F;
1041 }
1042 break;
1043 case ARCMSR_MESSAGE_SAY_HELLO: {
1044 int8_t * hello_string = "Hello! I am ARCMSR";
1045
1046 memcpy(pcmdmessagefld->messagedatabuffer, hello_string
1047 , (int16_t)strlen(hello_string));
1048 pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK;
1049 }
1050 break;
1051 case ARCMSR_MESSAGE_SAY_GOODBYE:
1052 arcmsr_iop_parking(acb);
1053 break;
1054 case ARCMSR_MESSAGE_FLUSH_ADAPTER_CACHE:
1055 arcmsr_flush_adapter_cache(acb);
1056 break;
1057 default:
1058 retvalue = ARCMSR_MESSAGE_FAIL;
1059 }
1060 message_out:
1061 if (cmd->use_sg) {
1062 struct scatterlist *sg;
1063
1064 sg = (struct scatterlist *) cmd->request_buffer;
1065 kunmap_atomic(buffer - sg->offset, KM_IRQ0);
1066 }
1067 return retvalue;
1068 }
1069
1070 static struct CommandControlBlock *arcmsr_get_freeccb(struct AdapterControlBlock *acb)
1071 {
1072 struct list_head *head = &acb->ccb_free_list;
1073 struct CommandControlBlock *ccb = NULL;
1074
1075 if (!list_empty(head)) {
1076 ccb = list_entry(head->next, struct CommandControlBlock, list);
1077 list_del(head->next);
1078 }
1079 return ccb;
1080 }
1081
1082 static void arcmsr_handle_virtual_command(struct AdapterControlBlock *acb,
1083 struct scsi_cmnd *cmd)
1084 {
1085 switch (cmd->cmnd[0]) {
1086 case INQUIRY: {
1087 unsigned char inqdata[36];
1088 char *buffer;
1089
1090 if (cmd->device->lun) {
1091 cmd->result = (DID_TIME_OUT << 16);
1092 cmd->scsi_done(cmd);
1093 return;
1094 }
1095 inqdata[0] = TYPE_PROCESSOR;
1096 /* Periph Qualifier & Periph Dev Type */
1097 inqdata[1] = 0;
1098 /* rem media bit & Dev Type Modifier */
1099 inqdata[2] = 0;
1100 /* ISO,ECMA,& ANSI versions */
1101 inqdata[4] = 31;
1102 /* length of additional data */
1103 strncpy(&inqdata[8], "Areca ", 8);
1104 /* Vendor Identification */
1105 strncpy(&inqdata[16], "RAID controller ", 16);
1106 /* Product Identification */
1107 strncpy(&inqdata[32], "R001", 4); /* Product Revision */
1108 if (cmd->use_sg) {
1109 struct scatterlist *sg;
1110
1111 sg = (struct scatterlist *) cmd->request_buffer;
1112 buffer = kmap_atomic(sg->page, KM_IRQ0) + sg->offset;
1113 } else {
1114 buffer = cmd->request_buffer;
1115 }
1116 memcpy(buffer, inqdata, sizeof(inqdata));
1117 if (cmd->use_sg) {
1118 struct scatterlist *sg;
1119
1120 sg = (struct scatterlist *) cmd->request_buffer;
1121 kunmap_atomic(buffer - sg->offset, KM_IRQ0);
1122 }
1123 cmd->scsi_done(cmd);
1124 }
1125 break;
1126 case WRITE_BUFFER:
1127 case READ_BUFFER: {
1128 if (arcmsr_iop_message_xfer(acb, cmd))
1129 cmd->result = (DID_ERROR << 16);
1130 cmd->scsi_done(cmd);
1131 }
1132 break;
1133 default:
1134 cmd->scsi_done(cmd);
1135 }
1136 }
1137
1138 static int arcmsr_queue_command(struct scsi_cmnd *cmd,
1139 void (* done)(struct scsi_cmnd *))
1140 {
1141 struct Scsi_Host *host = cmd->device->host;
1142 struct AdapterControlBlock *acb =
1143 (struct AdapterControlBlock *) host->hostdata;
1144 struct CommandControlBlock *ccb;
1145 int target = cmd->device->id;
1146 int lun = cmd->device->lun;
1147
1148 cmd->scsi_done = done;
1149 cmd->host_scribble = NULL;
1150 cmd->result = 0;
1151 if (acb->acb_flags & ACB_F_BUS_RESET) {
1152 printk(KERN_NOTICE "arcmsr%d: bus reset"
1153 " and return busy \n"
1154 , acb->host->host_no);
1155 return SCSI_MLQUEUE_HOST_BUSY;
1156 }
1157 if(target == 16) {
1158 /* virtual device for iop message transfer */
1159 arcmsr_handle_virtual_command(acb, cmd);
1160 return 0;
1161 }
1162 if (acb->devstate[target][lun] == ARECA_RAID_GONE) {
1163 uint8_t block_cmd;
1164
1165 block_cmd = cmd->cmnd[0] & 0x0f;
1166 if (block_cmd == 0x08 || block_cmd == 0x0a) {
1167 printk(KERN_NOTICE
1168 "arcmsr%d: block 'read/write'"
1169 "command with gone raid volume"
1170 " Cmd=%2x, TargetId=%d, Lun=%d \n"
1171 , acb->host->host_no
1172 , cmd->cmnd[0]
1173 , target, lun);
1174 cmd->result = (DID_NO_CONNECT << 16);
1175 cmd->scsi_done(cmd);
1176 return 0;
1177 }
1178 }
1179 if (atomic_read(&acb->ccboutstandingcount) >=
1180 ARCMSR_MAX_OUTSTANDING_CMD)
1181 return SCSI_MLQUEUE_HOST_BUSY;
1182
1183 ccb = arcmsr_get_freeccb(acb);
1184 if (!ccb)
1185 return SCSI_MLQUEUE_HOST_BUSY;
1186 arcmsr_build_ccb(acb, ccb, cmd);
1187 arcmsr_post_ccb(acb, ccb);
1188 return 0;
1189 }
1190
1191 static void arcmsr_get_firmware_spec(struct AdapterControlBlock *acb)
1192 {
1193 struct MessageUnit __iomem *reg = acb->pmu;
1194 char *acb_firm_model = acb->firm_model;
1195 char *acb_firm_version = acb->firm_version;
1196 char __iomem *iop_firm_model = (char __iomem *) &reg->message_rwbuffer[15];
1197 char __iomem *iop_firm_version = (char __iomem *) &reg->message_rwbuffer[17];
1198 int count;
1199
1200 writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
1201 if (arcmsr_wait_msgint_ready(acb))
1202 printk(KERN_NOTICE
1203 "arcmsr%d: wait "
1204 "'get adapter firmware miscellaneous data' timeout \n"
1205 , acb->host->host_no);
1206 count = 8;
1207 while (count) {
1208 *acb_firm_model = readb(iop_firm_model);
1209 acb_firm_model++;
1210 iop_firm_model++;
1211 count--;
1212 }
1213 count = 16;
1214 while (count) {
1215 *acb_firm_version = readb(iop_firm_version);
1216 acb_firm_version++;
1217 iop_firm_version++;
1218 count--;
1219 }
1220 printk(KERN_INFO
1221 "ARECA RAID ADAPTER%d: FIRMWARE VERSION %s \n"
1222 , acb->host->host_no
1223 , acb->firm_version);
1224 acb->firm_request_len = readl(&reg->message_rwbuffer[1]);
1225 acb->firm_numbers_queue = readl(&reg->message_rwbuffer[2]);
1226 acb->firm_sdram_size = readl(&reg->message_rwbuffer[3]);
1227 acb->firm_hd_channels = readl(&reg->message_rwbuffer[4]);
1228 }
1229
1230 static void arcmsr_polling_ccbdone(struct AdapterControlBlock *acb,
1231 struct CommandControlBlock *poll_ccb)
1232 {
1233 struct MessageUnit __iomem *reg = acb->pmu;
1234 struct CommandControlBlock *ccb;
1235 uint32_t flag_ccb, outbound_intstatus, poll_ccb_done = 0, poll_count = 0;
1236 int id, lun;
1237
1238 polling_ccb_retry:
1239 poll_count++;
1240 outbound_intstatus = readl(&reg->outbound_intstatus)
1241 & acb->outbound_int_enable;
1242 writel(outbound_intstatus, &reg->outbound_intstatus);/*clear interrupt*/
1243 while (1) {
1244 if ((flag_ccb = readl(&reg->outbound_queueport)) == 0xFFFFFFFF) {
1245 if (poll_ccb_done)
1246 break;
1247 else {
1248 msleep(25);
1249 if (poll_count > 100)
1250 break;
1251 goto polling_ccb_retry;
1252 }
1253 }
1254 ccb = (struct CommandControlBlock *)
1255 (acb->vir2phy_offset + (flag_ccb << 5));
1256 if ((ccb->acb != acb) ||
1257 (ccb->startdone != ARCMSR_CCB_START)) {
1258 if ((ccb->startdone == ARCMSR_CCB_ABORTED) ||
1259 (ccb == poll_ccb)) {
1260 printk(KERN_NOTICE
1261 "arcmsr%d: scsi id=%d lun=%d ccb='0x%p'"
1262 " poll command abort successfully \n"
1263 , acb->host->host_no
1264 , ccb->pcmd->device->id
1265 , ccb->pcmd->device->lun
1266 , ccb);
1267 ccb->pcmd->result = DID_ABORT << 16;
1268 arcmsr_ccb_complete(ccb, 1);
1269 poll_ccb_done = 1;
1270 continue;
1271 }
1272 printk(KERN_NOTICE
1273 "arcmsr%d: polling get an illegal ccb"
1274 " command done ccb='0x%p'"
1275 "ccboutstandingcount=%d \n"
1276 , acb->host->host_no
1277 , ccb
1278 , atomic_read(&acb->ccboutstandingcount));
1279 continue;
1280 }
1281 id = ccb->pcmd->device->id;
1282 lun = ccb->pcmd->device->lun;
1283 if (!(flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR)) {
1284 if (acb->devstate[id][lun] == ARECA_RAID_GONE)
1285 acb->devstate[id][lun] = ARECA_RAID_GOOD;
1286 ccb->pcmd->result = DID_OK << 16;
1287 arcmsr_ccb_complete(ccb, 1);
1288 } else {
1289 switch(ccb->arcmsr_cdb.DeviceStatus) {
1290 case ARCMSR_DEV_SELECT_TIMEOUT: {
1291 acb->devstate[id][lun] = ARECA_RAID_GONE;
1292 ccb->pcmd->result = DID_TIME_OUT << 16;
1293 arcmsr_ccb_complete(ccb, 1);
1294 }
1295 break;
1296 case ARCMSR_DEV_ABORTED:
1297 case ARCMSR_DEV_INIT_FAIL: {
1298 acb->devstate[id][lun] = ARECA_RAID_GONE;
1299 ccb->pcmd->result = DID_BAD_TARGET << 16;
1300 arcmsr_ccb_complete(ccb, 1);
1301 }
1302 break;
1303 case ARCMSR_DEV_CHECK_CONDITION: {
1304 acb->devstate[id][lun] = ARECA_RAID_GOOD;
1305 arcmsr_report_sense_info(ccb);
1306 arcmsr_ccb_complete(ccb, 1);
1307 }
1308 break;
1309 default:
1310 printk(KERN_NOTICE
1311 "arcmsr%d: scsi id=%d lun=%d"
1312 " polling and getting command error done"
1313 "but got unknown DeviceStatus = 0x%x \n"
1314 , acb->host->host_no
1315 , id
1316 , lun
1317 , ccb->arcmsr_cdb.DeviceStatus);
1318 acb->devstate[id][lun] = ARECA_RAID_GONE;
1319 ccb->pcmd->result = DID_BAD_TARGET << 16;
1320 arcmsr_ccb_complete(ccb, 1);
1321 break;
1322 }
1323 }
1324 }
1325 }
1326
1327 static void arcmsr_iop_init(struct AdapterControlBlock *acb)
1328 {
1329 struct MessageUnit __iomem *reg = acb->pmu;
1330 uint32_t intmask_org, mask, outbound_doorbell, firmware_state = 0;
1331
1332 do {
1333 firmware_state = readl(&reg->outbound_msgaddr1);
1334 } while (!(firmware_state & ARCMSR_OUTBOUND_MESG1_FIRMWARE_OK));
1335 intmask_org = readl(&reg->outbound_intmask)
1336 | ARCMSR_MU_OUTBOUND_MESSAGE0_INTMASKENABLE;
1337 arcmsr_get_firmware_spec(acb);
1338
1339 acb->acb_flags |= ACB_F_MSG_START_BGRB;
1340 writel(ARCMSR_INBOUND_MESG0_START_BGRB, &reg->inbound_msgaddr0);
1341 if (arcmsr_wait_msgint_ready(acb)) {
1342 printk(KERN_NOTICE "arcmsr%d: "
1343 "wait 'start adapter background rebulid' timeout\n",
1344 acb->host->host_no);
1345 }
1346
1347 outbound_doorbell = readl(&reg->outbound_doorbell);
1348 writel(outbound_doorbell, &reg->outbound_doorbell);
1349 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, &reg->inbound_doorbell);
1350 mask = ~(ARCMSR_MU_OUTBOUND_POSTQUEUE_INTMASKENABLE
1351 | ARCMSR_MU_OUTBOUND_DOORBELL_INTMASKENABLE);
1352 writel(intmask_org & mask, &reg->outbound_intmask);
1353 acb->outbound_int_enable = ~(intmask_org & mask) & 0x000000ff;
1354 acb->acb_flags |= ACB_F_IOP_INITED;
1355 }
1356
1357 static void arcmsr_iop_reset(struct AdapterControlBlock *acb)
1358 {
1359 struct MessageUnit __iomem *reg = acb->pmu;
1360 struct CommandControlBlock *ccb;
1361 uint32_t intmask_org;
1362 int i = 0;
1363
1364 if (atomic_read(&acb->ccboutstandingcount) != 0) {
1365 /* talk to iop 331 outstanding command aborted */
1366 arcmsr_abort_allcmd(acb);
1367 /* wait for 3 sec for all command aborted*/
1368 msleep_interruptible(3000);
1369 /* disable all outbound interrupt */
1370 intmask_org = arcmsr_disable_outbound_ints(acb);
1371 /* clear all outbound posted Q */
1372 for (i = 0; i < ARCMSR_MAX_OUTSTANDING_CMD; i++)
1373 readl(&reg->outbound_queueport);
1374 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
1375 ccb = acb->pccb_pool[i];
1376 if ((ccb->startdone == ARCMSR_CCB_START) ||
1377 (ccb->startdone == ARCMSR_CCB_ABORTED)) {
1378 ccb->startdone = ARCMSR_CCB_ABORTED;
1379 ccb->pcmd->result = DID_ABORT << 16;
1380 arcmsr_ccb_complete(ccb, 1);
1381 }
1382 }
1383 /* enable all outbound interrupt */
1384 arcmsr_enable_outbound_ints(acb, intmask_org);
1385 }
1386 atomic_set(&acb->ccboutstandingcount, 0);
1387 }
1388
1389 static int arcmsr_bus_reset(struct scsi_cmnd *cmd)
1390 {
1391 struct AdapterControlBlock *acb =
1392 (struct AdapterControlBlock *)cmd->device->host->hostdata;
1393 int i;
1394
1395 acb->num_resets++;
1396 acb->acb_flags |= ACB_F_BUS_RESET;
1397 for (i = 0; i < 400; i++) {
1398 if (!atomic_read(&acb->ccboutstandingcount))
1399 break;
1400 arcmsr_interrupt(acb);
1401 msleep(25);
1402 }
1403 arcmsr_iop_reset(acb);
1404 acb->acb_flags &= ~ACB_F_BUS_RESET;
1405 return SUCCESS;
1406 }
1407
1408 static void arcmsr_abort_one_cmd(struct AdapterControlBlock *acb,
1409 struct CommandControlBlock *ccb)
1410 {
1411 u32 intmask;
1412
1413 ccb->startdone = ARCMSR_CCB_ABORTED;
1414
1415 /*
1416 ** Wait for 3 sec for all command done.
1417 */
1418 msleep_interruptible(3000);
1419
1420 intmask = arcmsr_disable_outbound_ints(acb);
1421 arcmsr_polling_ccbdone(acb, ccb);
1422 arcmsr_enable_outbound_ints(acb, intmask);
1423 }
1424
1425 static int arcmsr_abort(struct scsi_cmnd *cmd)
1426 {
1427 struct AdapterControlBlock *acb =
1428 (struct AdapterControlBlock *)cmd->device->host->hostdata;
1429 int i = 0;
1430
1431 printk(KERN_NOTICE
1432 "arcmsr%d: abort device command of scsi id=%d lun=%d \n",
1433 acb->host->host_no, cmd->device->id, cmd->device->lun);
1434 acb->num_aborts++;
1435
1436 /*
1437 ************************************************
1438 ** the all interrupt service routine is locked
1439 ** we need to handle it as soon as possible and exit
1440 ************************************************
1441 */
1442 if (!atomic_read(&acb->ccboutstandingcount))
1443 return SUCCESS;
1444
1445 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
1446 struct CommandControlBlock *ccb = acb->pccb_pool[i];
1447 if (ccb->startdone == ARCMSR_CCB_START && ccb->pcmd == cmd) {
1448 arcmsr_abort_one_cmd(acb, ccb);
1449 break;
1450 }
1451 }
1452
1453 return SUCCESS;
1454 }
1455
1456 static const char *arcmsr_info(struct Scsi_Host *host)
1457 {
1458 struct AdapterControlBlock *acb =
1459 (struct AdapterControlBlock *) host->hostdata;
1460 static char buf[256];
1461 char *type;
1462 int raid6 = 1;
1463
1464 switch (acb->pdev->device) {
1465 case PCI_DEVICE_ID_ARECA_1110:
1466 case PCI_DEVICE_ID_ARECA_1210:
1467 raid6 = 0;
1468 /*FALLTHRU*/
1469 case PCI_DEVICE_ID_ARECA_1120:
1470 case PCI_DEVICE_ID_ARECA_1130:
1471 case PCI_DEVICE_ID_ARECA_1160:
1472 case PCI_DEVICE_ID_ARECA_1170:
1473 case PCI_DEVICE_ID_ARECA_1220:
1474 case PCI_DEVICE_ID_ARECA_1230:
1475 case PCI_DEVICE_ID_ARECA_1260:
1476 case PCI_DEVICE_ID_ARECA_1270:
1477 case PCI_DEVICE_ID_ARECA_1280:
1478 type = "SATA";
1479 break;
1480 case PCI_DEVICE_ID_ARECA_1380:
1481 case PCI_DEVICE_ID_ARECA_1381:
1482 case PCI_DEVICE_ID_ARECA_1680:
1483 case PCI_DEVICE_ID_ARECA_1681:
1484 type = "SAS";
1485 break;
1486 default:
1487 type = "X-TYPE";
1488 break;
1489 }
1490 sprintf(buf, "Areca %s Host Adapter RAID Controller%s\n %s",
1491 type, raid6 ? "( RAID6 capable)" : "",
1492 ARCMSR_DRIVER_VERSION);
1493 return buf;
1494 }
1495
1496
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