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