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Merge branch 'master' of git://git2.kernel.org/pub/scm/linux/kernel/git/torvalds...
[linux-2.6/linux-2.6-openrd.git] / drivers / scsi / arcmsr / arcmsr_hba.c
blob47d5d19f8c9221bb3e288fdf779f7cc8994dadf5
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: support@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 <linux/aer.h>
61 #include <asm/dma.h>
62 #include <asm/io.h>
63 #include <asm/system.h>
64 #include <asm/uaccess.h>
65 #include <scsi/scsi_host.h>
66 #include <scsi/scsi.h>
67 #include <scsi/scsi_cmnd.h>
68 #include <scsi/scsi_tcq.h>
69 #include <scsi/scsi_device.h>
70 #include <scsi/scsi_transport.h>
71 #include <scsi/scsicam.h>
72 #include "arcmsr.h"
73
74 MODULE_AUTHOR("Erich Chen <support@areca.com.tw>");
75 MODULE_DESCRIPTION("ARECA (ARC11xx/12xx/13xx/16xx) SATA/SAS RAID HOST Adapter");
76 MODULE_LICENSE("Dual BSD/GPL");
77 MODULE_VERSION(ARCMSR_DRIVER_VERSION);
78
79 static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb,
80 struct scsi_cmnd *cmd);
81 static int arcmsr_iop_confirm(struct AdapterControlBlock *acb);
82 static int arcmsr_abort(struct scsi_cmnd *);
83 static int arcmsr_bus_reset(struct scsi_cmnd *);
84 static int arcmsr_bios_param(struct scsi_device *sdev,
85 struct block_device *bdev, sector_t capacity, int *info);
86 static int arcmsr_queue_command(struct scsi_cmnd *cmd,
87 void (*done) (struct scsi_cmnd *));
88 static int arcmsr_probe(struct pci_dev *pdev,
89 const struct pci_device_id *id);
90 static void arcmsr_remove(struct pci_dev *pdev);
91 static void arcmsr_shutdown(struct pci_dev *pdev);
92 static void arcmsr_iop_init(struct AdapterControlBlock *acb);
93 static void arcmsr_free_ccb_pool(struct AdapterControlBlock *acb);
94 static u32 arcmsr_disable_outbound_ints(struct AdapterControlBlock *acb);
95 static void arcmsr_stop_adapter_bgrb(struct AdapterControlBlock *acb);
96 static void arcmsr_flush_hba_cache(struct AdapterControlBlock *acb);
97 static void arcmsr_flush_hbb_cache(struct AdapterControlBlock *acb);
98 static const char *arcmsr_info(struct Scsi_Host *);
99 static irqreturn_t arcmsr_interrupt(struct AdapterControlBlock *acb);
100 static int arcmsr_adjust_disk_queue_depth(struct scsi_device *sdev,
101 int queue_depth, int reason)
102 {
103 if (reason != SCSI_QDEPTH_DEFAULT)
104 return -EOPNOTSUPP;
105
106 if (queue_depth > ARCMSR_MAX_CMD_PERLUN)
107 queue_depth = ARCMSR_MAX_CMD_PERLUN;
108 scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG, queue_depth);
109 return queue_depth;
110 }
111
112 static struct scsi_host_template arcmsr_scsi_host_template = {
113 .module = THIS_MODULE,
114 .name = "ARCMSR ARECA SATA/SAS RAID HOST Adapter"
115 ARCMSR_DRIVER_VERSION,
116 .info = arcmsr_info,
117 .queuecommand = arcmsr_queue_command,
118 .eh_abort_handler = arcmsr_abort,
119 .eh_bus_reset_handler = arcmsr_bus_reset,
120 .bios_param = arcmsr_bios_param,
121 .change_queue_depth = arcmsr_adjust_disk_queue_depth,
122 .can_queue = ARCMSR_MAX_OUTSTANDING_CMD,
123 .this_id = ARCMSR_SCSI_INITIATOR_ID,
124 .sg_tablesize = ARCMSR_MAX_SG_ENTRIES,
125 .max_sectors = ARCMSR_MAX_XFER_SECTORS,
126 .cmd_per_lun = ARCMSR_MAX_CMD_PERLUN,
127 .use_clustering = ENABLE_CLUSTERING,
128 .shost_attrs = arcmsr_host_attrs,
129 };
130 #ifdef CONFIG_SCSI_ARCMSR_AER
131 static pci_ers_result_t arcmsr_pci_slot_reset(struct pci_dev *pdev);
132 static pci_ers_result_t arcmsr_pci_error_detected(struct pci_dev *pdev,
133 pci_channel_state_t state);
134
135 static struct pci_error_handlers arcmsr_pci_error_handlers = {
136 .error_detected = arcmsr_pci_error_detected,
137 .slot_reset = arcmsr_pci_slot_reset,
138 };
139 #endif
140 static struct pci_device_id arcmsr_device_id_table[] = {
141 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1110)},
142 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1120)},
143 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1130)},
144 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1160)},
145 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1170)},
146 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1200)},
147 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1201)},
148 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1202)},
149 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1210)},
150 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1220)},
151 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1230)},
152 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1260)},
153 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1270)},
154 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1280)},
155 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1380)},
156 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1381)},
157 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1680)},
158 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1681)},
159 {0, 0}, /* Terminating entry */
160 };
161 MODULE_DEVICE_TABLE(pci, arcmsr_device_id_table);
162 static struct pci_driver arcmsr_pci_driver = {
163 .name = "arcmsr",
164 .id_table = arcmsr_device_id_table,
165 .probe = arcmsr_probe,
166 .remove = arcmsr_remove,
167 .shutdown = arcmsr_shutdown,
168 #ifdef CONFIG_SCSI_ARCMSR_AER
169 .err_handler = &arcmsr_pci_error_handlers,
170 #endif
171 };
172
173 static irqreturn_t arcmsr_do_interrupt(int irq, void *dev_id)
174 {
175 irqreturn_t handle_state;
176 struct AdapterControlBlock *acb = dev_id;
177
178 spin_lock(acb->host->host_lock);
179 handle_state = arcmsr_interrupt(acb);
180 spin_unlock(acb->host->host_lock);
181
182 return handle_state;
183 }
184
185 static int arcmsr_bios_param(struct scsi_device *sdev,
186 struct block_device *bdev, sector_t capacity, int *geom)
187 {
188 int ret, heads, sectors, cylinders, total_capacity;
189 unsigned char *buffer;/* return copy of block device's partition table */
190
191 buffer = scsi_bios_ptable(bdev);
192 if (buffer) {
193 ret = scsi_partsize(buffer, capacity, &geom[2], &geom[0], &geom[1]);
194 kfree(buffer);
195 if (ret != -1)
196 return ret;
197 }
198 total_capacity = capacity;
199 heads = 64;
200 sectors = 32;
201 cylinders = total_capacity / (heads * sectors);
202 if (cylinders > 1024) {
203 heads = 255;
204 sectors = 63;
205 cylinders = total_capacity / (heads * sectors);
206 }
207 geom[0] = heads;
208 geom[1] = sectors;
209 geom[2] = cylinders;
210 return 0;
211 }
212
213 static void arcmsr_define_adapter_type(struct AdapterControlBlock *acb)
214 {
215 struct pci_dev *pdev = acb->pdev;
216 u16 dev_id;
217 pci_read_config_word(pdev, PCI_DEVICE_ID, &dev_id);
218 switch (dev_id) {
219 case 0x1201 : {
220 acb->adapter_type = ACB_ADAPTER_TYPE_B;
221 }
222 break;
223
224 default : acb->adapter_type = ACB_ADAPTER_TYPE_A;
225 }
226 }
227
228 static int arcmsr_alloc_ccb_pool(struct AdapterControlBlock *acb)
229 {
230
231 switch (acb->adapter_type) {
232
233 case ACB_ADAPTER_TYPE_A: {
234 struct pci_dev *pdev = acb->pdev;
235 void *dma_coherent;
236 dma_addr_t dma_coherent_handle, dma_addr;
237 struct CommandControlBlock *ccb_tmp;
238 uint32_t intmask_org;
239 int i, j;
240
241 acb->pmuA = pci_ioremap_bar(pdev, 0);
242 if (!acb->pmuA) {
243 printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n",
244 acb->host->host_no);
245 return -ENOMEM;
246 }
247
248 dma_coherent = dma_alloc_coherent(&pdev->dev,
249 ARCMSR_MAX_FREECCB_NUM *
250 sizeof (struct CommandControlBlock) + 0x20,
251 &dma_coherent_handle, GFP_KERNEL);
252
253 if (!dma_coherent) {
254 iounmap(acb->pmuA);
255 return -ENOMEM;
256 }
257
258 acb->dma_coherent = dma_coherent;
259 acb->dma_coherent_handle = dma_coherent_handle;
260
261 if (((unsigned long)dma_coherent & 0x1F)) {
262 dma_coherent = dma_coherent +
263 (0x20 - ((unsigned long)dma_coherent & 0x1F));
264 dma_coherent_handle = dma_coherent_handle +
265 (0x20 - ((unsigned long)dma_coherent_handle & 0x1F));
266 }
267
268 dma_addr = dma_coherent_handle;
269 ccb_tmp = (struct CommandControlBlock *)dma_coherent;
270 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
271 ccb_tmp->cdb_shifted_phyaddr = dma_addr >> 5;
272 ccb_tmp->acb = acb;
273 acb->pccb_pool[i] = ccb_tmp;
274 list_add_tail(&ccb_tmp->list, &acb->ccb_free_list);
275 dma_addr = dma_addr + sizeof(struct CommandControlBlock);
276 ccb_tmp++;
277 }
278
279 acb->vir2phy_offset = (unsigned long)ccb_tmp -(unsigned long)dma_addr;
280 for (i = 0; i < ARCMSR_MAX_TARGETID; i++)
281 for (j = 0; j < ARCMSR_MAX_TARGETLUN; j++)
282 acb->devstate[i][j] = ARECA_RAID_GONE;
283
284 /*
285 ** here we need to tell iop 331 our ccb_tmp.HighPart
286 ** if ccb_tmp.HighPart is not zero
287 */
288 intmask_org = arcmsr_disable_outbound_ints(acb);
289 }
290 break;
291
292 case ACB_ADAPTER_TYPE_B: {
293
294 struct pci_dev *pdev = acb->pdev;
295 struct MessageUnit_B *reg;
296 void __iomem *mem_base0, *mem_base1;
297 void *dma_coherent;
298 dma_addr_t dma_coherent_handle, dma_addr;
299 uint32_t intmask_org;
300 struct CommandControlBlock *ccb_tmp;
301 int i, j;
302
303 dma_coherent = dma_alloc_coherent(&pdev->dev,
304 ((ARCMSR_MAX_FREECCB_NUM *
305 sizeof(struct CommandControlBlock) + 0x20) +
306 sizeof(struct MessageUnit_B)),
307 &dma_coherent_handle, GFP_KERNEL);
308 if (!dma_coherent)
309 return -ENOMEM;
310
311 acb->dma_coherent = dma_coherent;
312 acb->dma_coherent_handle = dma_coherent_handle;
313
314 if (((unsigned long)dma_coherent & 0x1F)) {
315 dma_coherent = dma_coherent +
316 (0x20 - ((unsigned long)dma_coherent & 0x1F));
317 dma_coherent_handle = dma_coherent_handle +
318 (0x20 - ((unsigned long)dma_coherent_handle & 0x1F));
319 }
320
321 dma_addr = dma_coherent_handle;
322 ccb_tmp = (struct CommandControlBlock *)dma_coherent;
323 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
324 ccb_tmp->cdb_shifted_phyaddr = dma_addr >> 5;
325 ccb_tmp->acb = acb;
326 acb->pccb_pool[i] = ccb_tmp;
327 list_add_tail(&ccb_tmp->list, &acb->ccb_free_list);
328 dma_addr = dma_addr + sizeof(struct CommandControlBlock);
329 ccb_tmp++;
330 }
331
332 reg = (struct MessageUnit_B *)(dma_coherent +
333 ARCMSR_MAX_FREECCB_NUM * sizeof(struct CommandControlBlock));
334 acb->pmuB = reg;
335 mem_base0 = pci_ioremap_bar(pdev, 0);
336 if (!mem_base0)
337 goto out;
338
339 mem_base1 = pci_ioremap_bar(pdev, 2);
340 if (!mem_base1) {
341 iounmap(mem_base0);
342 goto out;
343 }
344
345 reg->drv2iop_doorbell_reg = mem_base0 + ARCMSR_DRV2IOP_DOORBELL;
346 reg->drv2iop_doorbell_mask_reg = mem_base0 +
347 ARCMSR_DRV2IOP_DOORBELL_MASK;
348 reg->iop2drv_doorbell_reg = mem_base0 + ARCMSR_IOP2DRV_DOORBELL;
349 reg->iop2drv_doorbell_mask_reg = mem_base0 +
350 ARCMSR_IOP2DRV_DOORBELL_MASK;
351 reg->ioctl_wbuffer_reg = mem_base1 + ARCMSR_IOCTL_WBUFFER;
352 reg->ioctl_rbuffer_reg = mem_base1 + ARCMSR_IOCTL_RBUFFER;
353 reg->msgcode_rwbuffer_reg = mem_base1 + ARCMSR_MSGCODE_RWBUFFER;
354
355 acb->vir2phy_offset = (unsigned long)ccb_tmp -(unsigned long)dma_addr;
356 for (i = 0; i < ARCMSR_MAX_TARGETID; i++)
357 for (j = 0; j < ARCMSR_MAX_TARGETLUN; j++)
358 acb->devstate[i][j] = ARECA_RAID_GOOD;
359
360 /*
361 ** here we need to tell iop 331 our ccb_tmp.HighPart
362 ** if ccb_tmp.HighPart is not zero
363 */
364 intmask_org = arcmsr_disable_outbound_ints(acb);
365 }
366 break;
367 }
368 return 0;
369
370 out:
371 dma_free_coherent(&acb->pdev->dev,
372 (ARCMSR_MAX_FREECCB_NUM * sizeof(struct CommandControlBlock) + 0x20 +
373 sizeof(struct MessageUnit_B)), acb->dma_coherent, acb->dma_coherent_handle);
374 return -ENOMEM;
375 }
376
377 static int arcmsr_probe(struct pci_dev *pdev,
378 const struct pci_device_id *id)
379 {
380 struct Scsi_Host *host;
381 struct AdapterControlBlock *acb;
382 uint8_t bus, dev_fun;
383 int error;
384
385 error = pci_enable_device(pdev);
386 if (error)
387 goto out;
388 pci_set_master(pdev);
389
390 host = scsi_host_alloc(&arcmsr_scsi_host_template,
391 sizeof(struct AdapterControlBlock));
392 if (!host) {
393 error = -ENOMEM;
394 goto out_disable_device;
395 }
396 acb = (struct AdapterControlBlock *)host->hostdata;
397 memset(acb, 0, sizeof (struct AdapterControlBlock));
398
399 error = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
400 if (error) {
401 error = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
402 if (error) {
403 printk(KERN_WARNING
404 "scsi%d: No suitable DMA mask available\n",
405 host->host_no);
406 goto out_host_put;
407 }
408 }
409 bus = pdev->bus->number;
410 dev_fun = pdev->devfn;
411 acb->host = host;
412 acb->pdev = pdev;
413 host->max_sectors = ARCMSR_MAX_XFER_SECTORS;
414 host->max_lun = ARCMSR_MAX_TARGETLUN;
415 host->max_id = ARCMSR_MAX_TARGETID;/*16:8*/
416 host->max_cmd_len = 16; /*this is issue of 64bit LBA, over 2T byte*/
417 host->sg_tablesize = ARCMSR_MAX_SG_ENTRIES;
418 host->can_queue = ARCMSR_MAX_FREECCB_NUM; /* max simultaneous cmds */
419 host->cmd_per_lun = ARCMSR_MAX_CMD_PERLUN;
420 host->this_id = ARCMSR_SCSI_INITIATOR_ID;
421 host->unique_id = (bus << 8) | dev_fun;
422 host->irq = pdev->irq;
423 error = pci_request_regions(pdev, "arcmsr");
424 if (error) {
425 goto out_host_put;
426 }
427 arcmsr_define_adapter_type(acb);
428
429 acb->acb_flags |= (ACB_F_MESSAGE_WQBUFFER_CLEARED |
430 ACB_F_MESSAGE_RQBUFFER_CLEARED |
431 ACB_F_MESSAGE_WQBUFFER_READED);
432 acb->acb_flags &= ~ACB_F_SCSISTOPADAPTER;
433 INIT_LIST_HEAD(&acb->ccb_free_list);
434
435 error = arcmsr_alloc_ccb_pool(acb);
436 if (error)
437 goto out_release_regions;
438
439 error = request_irq(pdev->irq, arcmsr_do_interrupt,
440 IRQF_SHARED, "arcmsr", acb);
441 if (error)
442 goto out_free_ccb_pool;
443
444 arcmsr_iop_init(acb);
445 pci_set_drvdata(pdev, host);
446 if (strncmp(acb->firm_version, "V1.42", 5) >= 0)
447 host->max_sectors= ARCMSR_MAX_XFER_SECTORS_B;
448
449 error = scsi_add_host(host, &pdev->dev);
450 if (error)
451 goto out_free_irq;
452
453 error = arcmsr_alloc_sysfs_attr(acb);
454 if (error)
455 goto out_free_sysfs;
456
457 scsi_scan_host(host);
458 #ifdef CONFIG_SCSI_ARCMSR_AER
459 pci_enable_pcie_error_reporting(pdev);
460 #endif
461 return 0;
462 out_free_sysfs:
463 out_free_irq:
464 free_irq(pdev->irq, acb);
465 out_free_ccb_pool:
466 arcmsr_free_ccb_pool(acb);
467 out_release_regions:
468 pci_release_regions(pdev);
469 out_host_put:
470 scsi_host_put(host);
471 out_disable_device:
472 pci_disable_device(pdev);
473 out:
474 return error;
475 }
476
477 static uint8_t arcmsr_hba_wait_msgint_ready(struct AdapterControlBlock *acb)
478 {
479 struct MessageUnit_A __iomem *reg = acb->pmuA;
480 uint32_t Index;
481 uint8_t Retries = 0x00;
482
483 do {
484 for (Index = 0; Index < 100; Index++) {
485 if (readl(&reg->outbound_intstatus) &
486 ARCMSR_MU_OUTBOUND_MESSAGE0_INT) {
487 writel(ARCMSR_MU_OUTBOUND_MESSAGE0_INT,
488 &reg->outbound_intstatus);
489 return 0x00;
490 }
491 msleep(10);
492 }/*max 1 seconds*/
493
494 } while (Retries++ < 20);/*max 20 sec*/
495 return 0xff;
496 }
497
498 static uint8_t arcmsr_hbb_wait_msgint_ready(struct AdapterControlBlock *acb)
499 {
500 struct MessageUnit_B *reg = acb->pmuB;
501 uint32_t Index;
502 uint8_t Retries = 0x00;
503
504 do {
505 for (Index = 0; Index < 100; Index++) {
506 if (readl(reg->iop2drv_doorbell_reg)
507 & ARCMSR_IOP2DRV_MESSAGE_CMD_DONE) {
508 writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN
509 , reg->iop2drv_doorbell_reg);
510 writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT, reg->drv2iop_doorbell_reg);
511 return 0x00;
512 }
513 msleep(10);
514 }/*max 1 seconds*/
515
516 } while (Retries++ < 20);/*max 20 sec*/
517 return 0xff;
518 }
519
520 static void arcmsr_abort_hba_allcmd(struct AdapterControlBlock *acb)
521 {
522 struct MessageUnit_A __iomem *reg = acb->pmuA;
523
524 writel(ARCMSR_INBOUND_MESG0_ABORT_CMD, &reg->inbound_msgaddr0);
525 if (arcmsr_hba_wait_msgint_ready(acb))
526 printk(KERN_NOTICE
527 "arcmsr%d: wait 'abort all outstanding command' timeout \n"
528 , acb->host->host_no);
529 }
530
531 static void arcmsr_abort_hbb_allcmd(struct AdapterControlBlock *acb)
532 {
533 struct MessageUnit_B *reg = acb->pmuB;
534
535 writel(ARCMSR_MESSAGE_ABORT_CMD, reg->drv2iop_doorbell_reg);
536 if (arcmsr_hbb_wait_msgint_ready(acb))
537 printk(KERN_NOTICE
538 "arcmsr%d: wait 'abort all outstanding command' timeout \n"
539 , acb->host->host_no);
540 }
541
542 static void arcmsr_abort_allcmd(struct AdapterControlBlock *acb)
543 {
544 switch (acb->adapter_type) {
545 case ACB_ADAPTER_TYPE_A: {
546 arcmsr_abort_hba_allcmd(acb);
547 }
548 break;
549
550 case ACB_ADAPTER_TYPE_B: {
551 arcmsr_abort_hbb_allcmd(acb);
552 }
553 }
554 }
555
556 static void arcmsr_pci_unmap_dma(struct CommandControlBlock *ccb)
557 {
558 struct scsi_cmnd *pcmd = ccb->pcmd;
559
560 scsi_dma_unmap(pcmd);
561 }
562
563 static void arcmsr_ccb_complete(struct CommandControlBlock *ccb, int stand_flag)
564 {
565 struct AdapterControlBlock *acb = ccb->acb;
566 struct scsi_cmnd *pcmd = ccb->pcmd;
567
568 arcmsr_pci_unmap_dma(ccb);
569 if (stand_flag == 1)
570 atomic_dec(&acb->ccboutstandingcount);
571 ccb->startdone = ARCMSR_CCB_DONE;
572 ccb->ccb_flags = 0;
573 list_add_tail(&ccb->list, &acb->ccb_free_list);
574 pcmd->scsi_done(pcmd);
575 }
576
577 static void arcmsr_flush_hba_cache(struct AdapterControlBlock *acb)
578 {
579 struct MessageUnit_A __iomem *reg = acb->pmuA;
580 int retry_count = 30;
581
582 writel(ARCMSR_INBOUND_MESG0_FLUSH_CACHE, &reg->inbound_msgaddr0);
583 do {
584 if (!arcmsr_hba_wait_msgint_ready(acb))
585 break;
586 else {
587 retry_count--;
588 printk(KERN_NOTICE "arcmsr%d: wait 'flush adapter cache' \
589 timeout, retry count down = %d \n", acb->host->host_no, retry_count);
590 }
591 } while (retry_count != 0);
592 }
593
594 static void arcmsr_flush_hbb_cache(struct AdapterControlBlock *acb)
595 {
596 struct MessageUnit_B *reg = acb->pmuB;
597 int retry_count = 30;
598
599 writel(ARCMSR_MESSAGE_FLUSH_CACHE, reg->drv2iop_doorbell_reg);
600 do {
601 if (!arcmsr_hbb_wait_msgint_ready(acb))
602 break;
603 else {
604 retry_count--;
605 printk(KERN_NOTICE "arcmsr%d: wait 'flush adapter cache' \
606 timeout,retry count down = %d \n", acb->host->host_no, retry_count);
607 }
608 } while (retry_count != 0);
609 }
610
611 static void arcmsr_flush_adapter_cache(struct AdapterControlBlock *acb)
612 {
613 switch (acb->adapter_type) {
614
615 case ACB_ADAPTER_TYPE_A: {
616 arcmsr_flush_hba_cache(acb);
617 }
618 break;
619
620 case ACB_ADAPTER_TYPE_B: {
621 arcmsr_flush_hbb_cache(acb);
622 }
623 }
624 }
625
626 static void arcmsr_report_sense_info(struct CommandControlBlock *ccb)
627 {
628
629 struct scsi_cmnd *pcmd = ccb->pcmd;
630 struct SENSE_DATA *sensebuffer = (struct SENSE_DATA *)pcmd->sense_buffer;
631
632 pcmd->result = DID_OK << 16;
633 if (sensebuffer) {
634 int sense_data_length =
635 sizeof(struct SENSE_DATA) < SCSI_SENSE_BUFFERSIZE
636 ? sizeof(struct SENSE_DATA) : SCSI_SENSE_BUFFERSIZE;
637 memset(sensebuffer, 0, SCSI_SENSE_BUFFERSIZE);
638 memcpy(sensebuffer, ccb->arcmsr_cdb.SenseData, sense_data_length);
639 sensebuffer->ErrorCode = SCSI_SENSE_CURRENT_ERRORS;
640 sensebuffer->Valid = 1;
641 }
642 }
643
644 static u32 arcmsr_disable_outbound_ints(struct AdapterControlBlock *acb)
645 {
646 u32 orig_mask = 0;
647 switch (acb->adapter_type) {
648
649 case ACB_ADAPTER_TYPE_A : {
650 struct MessageUnit_A __iomem *reg = acb->pmuA;
651 orig_mask = readl(&reg->outbound_intmask)|\
652 ARCMSR_MU_OUTBOUND_MESSAGE0_INTMASKENABLE;
653 writel(orig_mask|ARCMSR_MU_OUTBOUND_ALL_INTMASKENABLE, \
654 &reg->outbound_intmask);
655 }
656 break;
657
658 case ACB_ADAPTER_TYPE_B : {
659 struct MessageUnit_B *reg = acb->pmuB;
660 orig_mask = readl(reg->iop2drv_doorbell_mask_reg) & \
661 (~ARCMSR_IOP2DRV_MESSAGE_CMD_DONE);
662 writel(0, reg->iop2drv_doorbell_mask_reg);
663 }
664 break;
665 }
666 return orig_mask;
667 }
668
669 static void arcmsr_report_ccb_state(struct AdapterControlBlock *acb, \
670 struct CommandControlBlock *ccb, uint32_t flag_ccb)
671 {
672
673 uint8_t id, lun;
674 id = ccb->pcmd->device->id;
675 lun = ccb->pcmd->device->lun;
676 if (!(flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR)) {
677 if (acb->devstate[id][lun] == ARECA_RAID_GONE)
678 acb->devstate[id][lun] = ARECA_RAID_GOOD;
679 ccb->pcmd->result = DID_OK << 16;
680 arcmsr_ccb_complete(ccb, 1);
681 } else {
682 switch (ccb->arcmsr_cdb.DeviceStatus) {
683 case ARCMSR_DEV_SELECT_TIMEOUT: {
684 acb->devstate[id][lun] = ARECA_RAID_GONE;
685 ccb->pcmd->result = DID_NO_CONNECT << 16;
686 arcmsr_ccb_complete(ccb, 1);
687 }
688 break;
689
690 case ARCMSR_DEV_ABORTED:
691
692 case ARCMSR_DEV_INIT_FAIL: {
693 acb->devstate[id][lun] = ARECA_RAID_GONE;
694 ccb->pcmd->result = DID_BAD_TARGET << 16;
695 arcmsr_ccb_complete(ccb, 1);
696 }
697 break;
698
699 case ARCMSR_DEV_CHECK_CONDITION: {
700 acb->devstate[id][lun] = ARECA_RAID_GOOD;
701 arcmsr_report_sense_info(ccb);
702 arcmsr_ccb_complete(ccb, 1);
703 }
704 break;
705
706 default:
707 printk(KERN_NOTICE
708 "arcmsr%d: scsi id = %d lun = %d"
709 " isr get command error done, "
710 "but got unknown DeviceStatus = 0x%x \n"
711 , acb->host->host_no
712 , id
713 , lun
714 , ccb->arcmsr_cdb.DeviceStatus);
715 acb->devstate[id][lun] = ARECA_RAID_GONE;
716 ccb->pcmd->result = DID_NO_CONNECT << 16;
717 arcmsr_ccb_complete(ccb, 1);
718 break;
719 }
720 }
721 }
722
723 static void arcmsr_drain_donequeue(struct AdapterControlBlock *acb, uint32_t flag_ccb)
724
725 {
726 struct CommandControlBlock *ccb;
727
728 ccb = (struct CommandControlBlock *)(acb->vir2phy_offset + (flag_ccb << 5));
729 if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) {
730 if (ccb->startdone == ARCMSR_CCB_ABORTED) {
731 struct scsi_cmnd *abortcmd = ccb->pcmd;
732 if (abortcmd) {
733 abortcmd->result |= DID_ABORT << 16;
734 arcmsr_ccb_complete(ccb, 1);
735 printk(KERN_NOTICE "arcmsr%d: ccb ='0x%p' \
736 isr got aborted command \n", acb->host->host_no, ccb);
737 }
738 }
739 printk(KERN_NOTICE "arcmsr%d: isr get an illegal ccb command \
740 done acb = '0x%p'"
741 "ccb = '0x%p' ccbacb = '0x%p' startdone = 0x%x"
742 " ccboutstandingcount = %d \n"
743 , acb->host->host_no
744 , acb
745 , ccb
746 , ccb->acb
747 , ccb->startdone
748 , atomic_read(&acb->ccboutstandingcount));
749 }
750 else
751 arcmsr_report_ccb_state(acb, ccb, flag_ccb);
752 }
753
754 static void arcmsr_done4abort_postqueue(struct AdapterControlBlock *acb)
755 {
756 int i = 0;
757 uint32_t flag_ccb;
758
759 switch (acb->adapter_type) {
760
761 case ACB_ADAPTER_TYPE_A: {
762 struct MessageUnit_A __iomem *reg = acb->pmuA;
763 uint32_t outbound_intstatus;
764 outbound_intstatus = readl(&reg->outbound_intstatus) &
765 acb->outbound_int_enable;
766 /*clear and abort all outbound posted Q*/
767 writel(outbound_intstatus, &reg->outbound_intstatus);/*clear interrupt*/
768 while (((flag_ccb = readl(&reg->outbound_queueport)) != 0xFFFFFFFF)
769 && (i++ < ARCMSR_MAX_OUTSTANDING_CMD)) {
770 arcmsr_drain_donequeue(acb, flag_ccb);
771 }
772 }
773 break;
774
775 case ACB_ADAPTER_TYPE_B: {
776 struct MessageUnit_B *reg = acb->pmuB;
777 /*clear all outbound posted Q*/
778 for (i = 0; i < ARCMSR_MAX_HBB_POSTQUEUE; i++) {
779 if ((flag_ccb = readl(&reg->done_qbuffer[i])) != 0) {
780 writel(0, &reg->done_qbuffer[i]);
781 arcmsr_drain_donequeue(acb, flag_ccb);
782 }
783 writel(0, &reg->post_qbuffer[i]);
784 }
785 reg->doneq_index = 0;
786 reg->postq_index = 0;
787 }
788 break;
789 }
790 }
791 static void arcmsr_remove(struct pci_dev *pdev)
792 {
793 struct Scsi_Host *host = pci_get_drvdata(pdev);
794 struct AdapterControlBlock *acb =
795 (struct AdapterControlBlock *) host->hostdata;
796 int poll_count = 0;
797
798 arcmsr_free_sysfs_attr(acb);
799 scsi_remove_host(host);
800 arcmsr_stop_adapter_bgrb(acb);
801 arcmsr_flush_adapter_cache(acb);
802 arcmsr_disable_outbound_ints(acb);
803 acb->acb_flags |= ACB_F_SCSISTOPADAPTER;
804 acb->acb_flags &= ~ACB_F_IOP_INITED;
805
806 for (poll_count = 0; poll_count < ARCMSR_MAX_OUTSTANDING_CMD; poll_count++) {
807 if (!atomic_read(&acb->ccboutstandingcount))
808 break;
809 arcmsr_interrupt(acb);/* FIXME: need spinlock */
810 msleep(25);
811 }
812
813 if (atomic_read(&acb->ccboutstandingcount)) {
814 int i;
815
816 arcmsr_abort_allcmd(acb);
817 arcmsr_done4abort_postqueue(acb);
818 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
819 struct CommandControlBlock *ccb = acb->pccb_pool[i];
820 if (ccb->startdone == ARCMSR_CCB_START) {
821 ccb->startdone = ARCMSR_CCB_ABORTED;
822 ccb->pcmd->result = DID_ABORT << 16;
823 arcmsr_ccb_complete(ccb, 1);
824 }
825 }
826 }
827
828 free_irq(pdev->irq, acb);
829 arcmsr_free_ccb_pool(acb);
830 pci_release_regions(pdev);
831
832 scsi_host_put(host);
833
834 pci_disable_device(pdev);
835 pci_set_drvdata(pdev, NULL);
836 }
837
838 static void arcmsr_shutdown(struct pci_dev *pdev)
839 {
840 struct Scsi_Host *host = pci_get_drvdata(pdev);
841 struct AdapterControlBlock *acb =
842 (struct AdapterControlBlock *)host->hostdata;
843
844 arcmsr_stop_adapter_bgrb(acb);
845 arcmsr_flush_adapter_cache(acb);
846 }
847
848 static int arcmsr_module_init(void)
849 {
850 int error = 0;
851
852 error = pci_register_driver(&arcmsr_pci_driver);
853 return error;
854 }
855
856 static void arcmsr_module_exit(void)
857 {
858 pci_unregister_driver(&arcmsr_pci_driver);
859 }
860 module_init(arcmsr_module_init);
861 module_exit(arcmsr_module_exit);
862
863 static void arcmsr_enable_outbound_ints(struct AdapterControlBlock *acb, \
864 u32 intmask_org)
865 {
866 u32 mask;
867
868 switch (acb->adapter_type) {
869
870 case ACB_ADAPTER_TYPE_A : {
871 struct MessageUnit_A __iomem *reg = acb->pmuA;
872 mask = intmask_org & ~(ARCMSR_MU_OUTBOUND_POSTQUEUE_INTMASKENABLE |
873 ARCMSR_MU_OUTBOUND_DOORBELL_INTMASKENABLE);
874 writel(mask, &reg->outbound_intmask);
875 acb->outbound_int_enable = ~(intmask_org & mask) & 0x000000ff;
876 }
877 break;
878
879 case ACB_ADAPTER_TYPE_B : {
880 struct MessageUnit_B *reg = acb->pmuB;
881 mask = intmask_org | (ARCMSR_IOP2DRV_DATA_WRITE_OK | \
882 ARCMSR_IOP2DRV_DATA_READ_OK | ARCMSR_IOP2DRV_CDB_DONE);
883 writel(mask, reg->iop2drv_doorbell_mask_reg);
884 acb->outbound_int_enable = (intmask_org | mask) & 0x0000000f;
885 }
886 }
887 }
888
889 static int arcmsr_build_ccb(struct AdapterControlBlock *acb,
890 struct CommandControlBlock *ccb, struct scsi_cmnd *pcmd)
891 {
892 struct ARCMSR_CDB *arcmsr_cdb = (struct ARCMSR_CDB *)&ccb->arcmsr_cdb;
893 int8_t *psge = (int8_t *)&arcmsr_cdb->u;
894 __le32 address_lo, address_hi;
895 int arccdbsize = 0x30;
896 int nseg;
897
898 ccb->pcmd = pcmd;
899 memset(arcmsr_cdb, 0, sizeof(struct ARCMSR_CDB));
900 arcmsr_cdb->Bus = 0;
901 arcmsr_cdb->TargetID = pcmd->device->id;
902 arcmsr_cdb->LUN = pcmd->device->lun;
903 arcmsr_cdb->Function = 1;
904 arcmsr_cdb->CdbLength = (uint8_t)pcmd->cmd_len;
905 arcmsr_cdb->Context = (unsigned long)arcmsr_cdb;
906 memcpy(arcmsr_cdb->Cdb, pcmd->cmnd, pcmd->cmd_len);
907
908 nseg = scsi_dma_map(pcmd);
909 if (nseg > ARCMSR_MAX_SG_ENTRIES)
910 return FAILED;
911 BUG_ON(nseg < 0);
912
913 if (nseg) {
914 __le32 length;
915 int i, cdb_sgcount = 0;
916 struct scatterlist *sg;
917
918 /* map stor port SG list to our iop SG List. */
919 scsi_for_each_sg(pcmd, sg, nseg, i) {
920 /* Get the physical address of the current data pointer */
921 length = cpu_to_le32(sg_dma_len(sg));
922 address_lo = cpu_to_le32(dma_addr_lo32(sg_dma_address(sg)));
923 address_hi = cpu_to_le32(dma_addr_hi32(sg_dma_address(sg)));
924 if (address_hi == 0) {
925 struct SG32ENTRY *pdma_sg = (struct SG32ENTRY *)psge;
926
927 pdma_sg->address = address_lo;
928 pdma_sg->length = length;
929 psge += sizeof (struct SG32ENTRY);
930 arccdbsize += sizeof (struct SG32ENTRY);
931 } else {
932 struct SG64ENTRY *pdma_sg = (struct SG64ENTRY *)psge;
933
934 pdma_sg->addresshigh = address_hi;
935 pdma_sg->address = address_lo;
936 pdma_sg->length = length|cpu_to_le32(IS_SG64_ADDR);
937 psge += sizeof (struct SG64ENTRY);
938 arccdbsize += sizeof (struct SG64ENTRY);
939 }
940 cdb_sgcount++;
941 }
942 arcmsr_cdb->sgcount = (uint8_t)cdb_sgcount;
943 arcmsr_cdb->DataLength = scsi_bufflen(pcmd);
944 if ( arccdbsize > 256)
945 arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_SGL_BSIZE;
946 }
947 if (pcmd->sc_data_direction == DMA_TO_DEVICE ) {
948 arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_WRITE;
949 ccb->ccb_flags |= CCB_FLAG_WRITE;
950 }
951 return SUCCESS;
952 }
953
954 static void arcmsr_post_ccb(struct AdapterControlBlock *acb, struct CommandControlBlock *ccb)
955 {
956 uint32_t cdb_shifted_phyaddr = ccb->cdb_shifted_phyaddr;
957 struct ARCMSR_CDB *arcmsr_cdb = (struct ARCMSR_CDB *)&ccb->arcmsr_cdb;
958 atomic_inc(&acb->ccboutstandingcount);
959 ccb->startdone = ARCMSR_CCB_START;
960
961 switch (acb->adapter_type) {
962 case ACB_ADAPTER_TYPE_A: {
963 struct MessageUnit_A __iomem *reg = acb->pmuA;
964
965 if (arcmsr_cdb->Flags & ARCMSR_CDB_FLAG_SGL_BSIZE)
966 writel(cdb_shifted_phyaddr | ARCMSR_CCBPOST_FLAG_SGL_BSIZE,
967 &reg->inbound_queueport);
968 else {
969 writel(cdb_shifted_phyaddr, &reg->inbound_queueport);
970 }
971 }
972 break;
973
974 case ACB_ADAPTER_TYPE_B: {
975 struct MessageUnit_B *reg = acb->pmuB;
976 uint32_t ending_index, index = reg->postq_index;
977
978 ending_index = ((index + 1) % ARCMSR_MAX_HBB_POSTQUEUE);
979 writel(0, &reg->post_qbuffer[ending_index]);
980 if (arcmsr_cdb->Flags & ARCMSR_CDB_FLAG_SGL_BSIZE) {
981 writel(cdb_shifted_phyaddr | ARCMSR_CCBPOST_FLAG_SGL_BSIZE,\
982 &reg->post_qbuffer[index]);
983 }
984 else {
985 writel(cdb_shifted_phyaddr, &reg->post_qbuffer[index]);
986 }
987 index++;
988 index %= ARCMSR_MAX_HBB_POSTQUEUE;/*if last index number set it to 0 */
989 reg->postq_index = index;
990 writel(ARCMSR_DRV2IOP_CDB_POSTED, reg->drv2iop_doorbell_reg);
991 }
992 break;
993 }
994 }
995
996 static void arcmsr_stop_hba_bgrb(struct AdapterControlBlock *acb)
997 {
998 struct MessageUnit_A __iomem *reg = acb->pmuA;
999 acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
1000 writel(ARCMSR_INBOUND_MESG0_STOP_BGRB, &reg->inbound_msgaddr0);
1001
1002 if (arcmsr_hba_wait_msgint_ready(acb)) {
1003 printk(KERN_NOTICE
1004 "arcmsr%d: wait 'stop adapter background rebulid' timeout \n"
1005 , acb->host->host_no);
1006 }
1007 }
1008
1009 static void arcmsr_stop_hbb_bgrb(struct AdapterControlBlock *acb)
1010 {
1011 struct MessageUnit_B *reg = acb->pmuB;
1012 acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
1013 writel(ARCMSR_MESSAGE_STOP_BGRB, reg->drv2iop_doorbell_reg);
1014
1015 if (arcmsr_hbb_wait_msgint_ready(acb)) {
1016 printk(KERN_NOTICE
1017 "arcmsr%d: wait 'stop adapter background rebulid' timeout \n"
1018 , acb->host->host_no);
1019 }
1020 }
1021
1022 static void arcmsr_stop_adapter_bgrb(struct AdapterControlBlock *acb)
1023 {
1024 switch (acb->adapter_type) {
1025 case ACB_ADAPTER_TYPE_A: {
1026 arcmsr_stop_hba_bgrb(acb);
1027 }
1028 break;
1029
1030 case ACB_ADAPTER_TYPE_B: {
1031 arcmsr_stop_hbb_bgrb(acb);
1032 }
1033 break;
1034 }
1035 }
1036
1037 static void arcmsr_free_ccb_pool(struct AdapterControlBlock *acb)
1038 {
1039 switch (acb->adapter_type) {
1040 case ACB_ADAPTER_TYPE_A: {
1041 iounmap(acb->pmuA);
1042 dma_free_coherent(&acb->pdev->dev,
1043 ARCMSR_MAX_FREECCB_NUM * sizeof (struct CommandControlBlock) + 0x20,
1044 acb->dma_coherent,
1045 acb->dma_coherent_handle);
1046 break;
1047 }
1048 case ACB_ADAPTER_TYPE_B: {
1049 struct MessageUnit_B *reg = acb->pmuB;
1050 iounmap(reg->drv2iop_doorbell_reg - ARCMSR_DRV2IOP_DOORBELL);
1051 iounmap(reg->ioctl_wbuffer_reg - ARCMSR_IOCTL_WBUFFER);
1052 dma_free_coherent(&acb->pdev->dev,
1053 (ARCMSR_MAX_FREECCB_NUM * sizeof(struct CommandControlBlock) + 0x20 +
1054 sizeof(struct MessageUnit_B)), acb->dma_coherent, acb->dma_coherent_handle);
1055 }
1056 }
1057
1058 }
1059
1060 void arcmsr_iop_message_read(struct AdapterControlBlock *acb)
1061 {
1062 switch (acb->adapter_type) {
1063 case ACB_ADAPTER_TYPE_A: {
1064 struct MessageUnit_A __iomem *reg = acb->pmuA;
1065 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, &reg->inbound_doorbell);
1066 }
1067 break;
1068
1069 case ACB_ADAPTER_TYPE_B: {
1070 struct MessageUnit_B *reg = acb->pmuB;
1071 writel(ARCMSR_DRV2IOP_DATA_READ_OK, reg->drv2iop_doorbell_reg);
1072 }
1073 break;
1074 }
1075 }
1076
1077 static void arcmsr_iop_message_wrote(struct AdapterControlBlock *acb)
1078 {
1079 switch (acb->adapter_type) {
1080 case ACB_ADAPTER_TYPE_A: {
1081 struct MessageUnit_A __iomem *reg = acb->pmuA;
1082 /*
1083 ** push inbound doorbell tell iop, driver data write ok
1084 ** and wait reply on next hwinterrupt for next Qbuffer post
1085 */
1086 writel(ARCMSR_INBOUND_DRIVER_DATA_WRITE_OK, &reg->inbound_doorbell);
1087 }
1088 break;
1089
1090 case ACB_ADAPTER_TYPE_B: {
1091 struct MessageUnit_B *reg = acb->pmuB;
1092 /*
1093 ** push inbound doorbell tell iop, driver data write ok
1094 ** and wait reply on next hwinterrupt for next Qbuffer post
1095 */
1096 writel(ARCMSR_DRV2IOP_DATA_WRITE_OK, reg->drv2iop_doorbell_reg);
1097 }
1098 break;
1099 }
1100 }
1101
1102 struct QBUFFER __iomem *arcmsr_get_iop_rqbuffer(struct AdapterControlBlock *acb)
1103 {
1104 struct QBUFFER __iomem *qbuffer = NULL;
1105
1106 switch (acb->adapter_type) {
1107
1108 case ACB_ADAPTER_TYPE_A: {
1109 struct MessageUnit_A __iomem *reg = acb->pmuA;
1110 qbuffer = (struct QBUFFER __iomem *)&reg->message_rbuffer;
1111 }
1112 break;
1113
1114 case ACB_ADAPTER_TYPE_B: {
1115 struct MessageUnit_B *reg = acb->pmuB;
1116 qbuffer = (struct QBUFFER __iomem *)reg->ioctl_rbuffer_reg;
1117 }
1118 break;
1119 }
1120 return qbuffer;
1121 }
1122
1123 static struct QBUFFER __iomem *arcmsr_get_iop_wqbuffer(struct AdapterControlBlock *acb)
1124 {
1125 struct QBUFFER __iomem *pqbuffer = NULL;
1126
1127 switch (acb->adapter_type) {
1128
1129 case ACB_ADAPTER_TYPE_A: {
1130 struct MessageUnit_A __iomem *reg = acb->pmuA;
1131 pqbuffer = (struct QBUFFER __iomem *) &reg->message_wbuffer;
1132 }
1133 break;
1134
1135 case ACB_ADAPTER_TYPE_B: {
1136 struct MessageUnit_B *reg = acb->pmuB;
1137 pqbuffer = (struct QBUFFER __iomem *)reg->ioctl_wbuffer_reg;
1138 }
1139 break;
1140 }
1141 return pqbuffer;
1142 }
1143
1144 static void arcmsr_iop2drv_data_wrote_handle(struct AdapterControlBlock *acb)
1145 {
1146 struct QBUFFER __iomem *prbuffer;
1147 struct QBUFFER *pQbuffer;
1148 uint8_t __iomem *iop_data;
1149 int32_t my_empty_len, iop_len, rqbuf_firstindex, rqbuf_lastindex;
1150
1151 rqbuf_lastindex = acb->rqbuf_lastindex;
1152 rqbuf_firstindex = acb->rqbuf_firstindex;
1153 prbuffer = arcmsr_get_iop_rqbuffer(acb);
1154 iop_data = (uint8_t __iomem *)prbuffer->data;
1155 iop_len = prbuffer->data_len;
1156 my_empty_len = (rqbuf_firstindex - rqbuf_lastindex -1)&(ARCMSR_MAX_QBUFFER -1);
1157
1158 if (my_empty_len >= iop_len)
1159 {
1160 while (iop_len > 0) {
1161 pQbuffer = (struct QBUFFER *)&acb->rqbuffer[rqbuf_lastindex];
1162 memcpy(pQbuffer, iop_data,1);
1163 rqbuf_lastindex++;
1164 rqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
1165 iop_data++;
1166 iop_len--;
1167 }
1168 acb->rqbuf_lastindex = rqbuf_lastindex;
1169 arcmsr_iop_message_read(acb);
1170 }
1171
1172 else {
1173 acb->acb_flags |= ACB_F_IOPDATA_OVERFLOW;
1174 }
1175 }
1176
1177 static void arcmsr_iop2drv_data_read_handle(struct AdapterControlBlock *acb)
1178 {
1179 acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_READED;
1180 if (acb->wqbuf_firstindex != acb->wqbuf_lastindex) {
1181 uint8_t *pQbuffer;
1182 struct QBUFFER __iomem *pwbuffer;
1183 uint8_t __iomem *iop_data;
1184 int32_t allxfer_len = 0;
1185
1186 acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED);
1187 pwbuffer = arcmsr_get_iop_wqbuffer(acb);
1188 iop_data = (uint8_t __iomem *)pwbuffer->data;
1189
1190 while ((acb->wqbuf_firstindex != acb->wqbuf_lastindex) && \
1191 (allxfer_len < 124)) {
1192 pQbuffer = &acb->wqbuffer[acb->wqbuf_firstindex];
1193 memcpy(iop_data, pQbuffer, 1);
1194 acb->wqbuf_firstindex++;
1195 acb->wqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
1196 iop_data++;
1197 allxfer_len++;
1198 }
1199 pwbuffer->data_len = allxfer_len;
1200
1201 arcmsr_iop_message_wrote(acb);
1202 }
1203
1204 if (acb->wqbuf_firstindex == acb->wqbuf_lastindex) {
1205 acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_CLEARED;
1206 }
1207 }
1208
1209 static void arcmsr_hba_doorbell_isr(struct AdapterControlBlock *acb)
1210 {
1211 uint32_t outbound_doorbell;
1212 struct MessageUnit_A __iomem *reg = acb->pmuA;
1213
1214 outbound_doorbell = readl(&reg->outbound_doorbell);
1215 writel(outbound_doorbell, &reg->outbound_doorbell);
1216 if (outbound_doorbell & ARCMSR_OUTBOUND_IOP331_DATA_WRITE_OK) {
1217 arcmsr_iop2drv_data_wrote_handle(acb);
1218 }
1219
1220 if (outbound_doorbell & ARCMSR_OUTBOUND_IOP331_DATA_READ_OK) {
1221 arcmsr_iop2drv_data_read_handle(acb);
1222 }
1223 }
1224
1225 static void arcmsr_hba_postqueue_isr(struct AdapterControlBlock *acb)
1226 {
1227 uint32_t flag_ccb;
1228 struct MessageUnit_A __iomem *reg = acb->pmuA;
1229
1230 while ((flag_ccb = readl(&reg->outbound_queueport)) != 0xFFFFFFFF) {
1231 arcmsr_drain_donequeue(acb, flag_ccb);
1232 }
1233 }
1234
1235 static void arcmsr_hbb_postqueue_isr(struct AdapterControlBlock *acb)
1236 {
1237 uint32_t index;
1238 uint32_t flag_ccb;
1239 struct MessageUnit_B *reg = acb->pmuB;
1240
1241 index = reg->doneq_index;
1242
1243 while ((flag_ccb = readl(&reg->done_qbuffer[index])) != 0) {
1244 writel(0, &reg->done_qbuffer[index]);
1245 arcmsr_drain_donequeue(acb, flag_ccb);
1246 index++;
1247 index %= ARCMSR_MAX_HBB_POSTQUEUE;
1248 reg->doneq_index = index;
1249 }
1250 }
1251
1252 static int arcmsr_handle_hba_isr(struct AdapterControlBlock *acb)
1253 {
1254 uint32_t outbound_intstatus;
1255 struct MessageUnit_A __iomem *reg = acb->pmuA;
1256
1257 outbound_intstatus = readl(&reg->outbound_intstatus) & \
1258 acb->outbound_int_enable;
1259 if (!(outbound_intstatus & ARCMSR_MU_OUTBOUND_HANDLE_INT)) {
1260 return 1;
1261 }
1262 writel(outbound_intstatus, &reg->outbound_intstatus);
1263 if (outbound_intstatus & ARCMSR_MU_OUTBOUND_DOORBELL_INT) {
1264 arcmsr_hba_doorbell_isr(acb);
1265 }
1266 if (outbound_intstatus & ARCMSR_MU_OUTBOUND_POSTQUEUE_INT) {
1267 arcmsr_hba_postqueue_isr(acb);
1268 }
1269 return 0;
1270 }
1271
1272 static int arcmsr_handle_hbb_isr(struct AdapterControlBlock *acb)
1273 {
1274 uint32_t outbound_doorbell;
1275 struct MessageUnit_B *reg = acb->pmuB;
1276
1277 outbound_doorbell = readl(reg->iop2drv_doorbell_reg) & \
1278 acb->outbound_int_enable;
1279 if (!outbound_doorbell)
1280 return 1;
1281
1282 writel(~outbound_doorbell, reg->iop2drv_doorbell_reg);
1283 /*in case the last action of doorbell interrupt clearance is cached, this action can push HW to write down the clear bit*/
1284 readl(reg->iop2drv_doorbell_reg);
1285 writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT, reg->drv2iop_doorbell_reg);
1286 if (outbound_doorbell & ARCMSR_IOP2DRV_DATA_WRITE_OK) {
1287 arcmsr_iop2drv_data_wrote_handle(acb);
1288 }
1289 if (outbound_doorbell & ARCMSR_IOP2DRV_DATA_READ_OK) {
1290 arcmsr_iop2drv_data_read_handle(acb);
1291 }
1292 if (outbound_doorbell & ARCMSR_IOP2DRV_CDB_DONE) {
1293 arcmsr_hbb_postqueue_isr(acb);
1294 }
1295
1296 return 0;
1297 }
1298
1299 static irqreturn_t arcmsr_interrupt(struct AdapterControlBlock *acb)
1300 {
1301 switch (acb->adapter_type) {
1302 case ACB_ADAPTER_TYPE_A: {
1303 if (arcmsr_handle_hba_isr(acb)) {
1304 return IRQ_NONE;
1305 }
1306 }
1307 break;
1308
1309 case ACB_ADAPTER_TYPE_B: {
1310 if (arcmsr_handle_hbb_isr(acb)) {
1311 return IRQ_NONE;
1312 }
1313 }
1314 break;
1315 }
1316 return IRQ_HANDLED;
1317 }
1318
1319 static void arcmsr_iop_parking(struct AdapterControlBlock *acb)
1320 {
1321 if (acb) {
1322 /* stop adapter background rebuild */
1323 if (acb->acb_flags & ACB_F_MSG_START_BGRB) {
1324 uint32_t intmask_org;
1325 acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
1326 intmask_org = arcmsr_disable_outbound_ints(acb);
1327 arcmsr_stop_adapter_bgrb(acb);
1328 arcmsr_flush_adapter_cache(acb);
1329 arcmsr_enable_outbound_ints(acb, intmask_org);
1330 }
1331 }
1332 }
1333
1334 void arcmsr_post_ioctldata2iop(struct AdapterControlBlock *acb)
1335 {
1336 int32_t wqbuf_firstindex, wqbuf_lastindex;
1337 uint8_t *pQbuffer;
1338 struct QBUFFER __iomem *pwbuffer;
1339 uint8_t __iomem *iop_data;
1340 int32_t allxfer_len = 0;
1341
1342 pwbuffer = arcmsr_get_iop_wqbuffer(acb);
1343 iop_data = (uint8_t __iomem *)pwbuffer->data;
1344 if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_READED) {
1345 acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED);
1346 wqbuf_firstindex = acb->wqbuf_firstindex;
1347 wqbuf_lastindex = acb->wqbuf_lastindex;
1348 while ((wqbuf_firstindex != wqbuf_lastindex) && (allxfer_len < 124)) {
1349 pQbuffer = &acb->wqbuffer[wqbuf_firstindex];
1350 memcpy(iop_data, pQbuffer, 1);
1351 wqbuf_firstindex++;
1352 wqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
1353 iop_data++;
1354 allxfer_len++;
1355 }
1356 acb->wqbuf_firstindex = wqbuf_firstindex;
1357 pwbuffer->data_len = allxfer_len;
1358 arcmsr_iop_message_wrote(acb);
1359 }
1360 }
1361
1362 static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb, \
1363 struct scsi_cmnd *cmd)
1364 {
1365 struct CMD_MESSAGE_FIELD *pcmdmessagefld;
1366 int retvalue = 0, transfer_len = 0;
1367 char *buffer;
1368 struct scatterlist *sg;
1369 uint32_t controlcode = (uint32_t ) cmd->cmnd[5] << 24 |
1370 (uint32_t ) cmd->cmnd[6] << 16 |
1371 (uint32_t ) cmd->cmnd[7] << 8 |
1372 (uint32_t ) cmd->cmnd[8];
1373 /* 4 bytes: Areca io control code */
1374
1375 sg = scsi_sglist(cmd);
1376 buffer = kmap_atomic(sg_page(sg), KM_IRQ0) + sg->offset;
1377 if (scsi_sg_count(cmd) > 1) {
1378 retvalue = ARCMSR_MESSAGE_FAIL;
1379 goto message_out;
1380 }
1381 transfer_len += sg->length;
1382
1383 if (transfer_len > sizeof(struct CMD_MESSAGE_FIELD)) {
1384 retvalue = ARCMSR_MESSAGE_FAIL;
1385 goto message_out;
1386 }
1387 pcmdmessagefld = (struct CMD_MESSAGE_FIELD *) buffer;
1388 switch(controlcode) {
1389
1390 case ARCMSR_MESSAGE_READ_RQBUFFER: {
1391 unsigned char *ver_addr;
1392 uint8_t *pQbuffer, *ptmpQbuffer;
1393 int32_t allxfer_len = 0;
1394
1395 ver_addr = kmalloc(1032, GFP_ATOMIC);
1396 if (!ver_addr) {
1397 retvalue = ARCMSR_MESSAGE_FAIL;
1398 goto message_out;
1399 }
1400 ptmpQbuffer = ver_addr;
1401 while ((acb->rqbuf_firstindex != acb->rqbuf_lastindex)
1402 && (allxfer_len < 1031)) {
1403 pQbuffer = &acb->rqbuffer[acb->rqbuf_firstindex];
1404 memcpy(ptmpQbuffer, pQbuffer, 1);
1405 acb->rqbuf_firstindex++;
1406 acb->rqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
1407 ptmpQbuffer++;
1408 allxfer_len++;
1409 }
1410 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
1411
1412 struct QBUFFER __iomem *prbuffer;
1413 uint8_t __iomem *iop_data;
1414 int32_t iop_len;
1415
1416 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
1417 prbuffer = arcmsr_get_iop_rqbuffer(acb);
1418 iop_data = prbuffer->data;
1419 iop_len = readl(&prbuffer->data_len);
1420 while (iop_len > 0) {
1421 acb->rqbuffer[acb->rqbuf_lastindex] = readb(iop_data);
1422 acb->rqbuf_lastindex++;
1423 acb->rqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
1424 iop_data++;
1425 iop_len--;
1426 }
1427 arcmsr_iop_message_read(acb);
1428 }
1429 memcpy(pcmdmessagefld->messagedatabuffer, ver_addr, allxfer_len);
1430 pcmdmessagefld->cmdmessage.Length = allxfer_len;
1431 pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK;
1432 kfree(ver_addr);
1433 }
1434 break;
1435
1436 case ARCMSR_MESSAGE_WRITE_WQBUFFER: {
1437 unsigned char *ver_addr;
1438 int32_t my_empty_len, user_len, wqbuf_firstindex, wqbuf_lastindex;
1439 uint8_t *pQbuffer, *ptmpuserbuffer;
1440
1441 ver_addr = kmalloc(1032, GFP_ATOMIC);
1442 if (!ver_addr) {
1443 retvalue = ARCMSR_MESSAGE_FAIL;
1444 goto message_out;
1445 }
1446 ptmpuserbuffer = ver_addr;
1447 user_len = pcmdmessagefld->cmdmessage.Length;
1448 memcpy(ptmpuserbuffer, pcmdmessagefld->messagedatabuffer, user_len);
1449 wqbuf_lastindex = acb->wqbuf_lastindex;
1450 wqbuf_firstindex = acb->wqbuf_firstindex;
1451 if (wqbuf_lastindex != wqbuf_firstindex) {
1452 struct SENSE_DATA *sensebuffer =
1453 (struct SENSE_DATA *)cmd->sense_buffer;
1454 arcmsr_post_ioctldata2iop(acb);
1455 /* has error report sensedata */
1456 sensebuffer->ErrorCode = 0x70;
1457 sensebuffer->SenseKey = ILLEGAL_REQUEST;
1458 sensebuffer->AdditionalSenseLength = 0x0A;
1459 sensebuffer->AdditionalSenseCode = 0x20;
1460 sensebuffer->Valid = 1;
1461 retvalue = ARCMSR_MESSAGE_FAIL;
1462 } else {
1463 my_empty_len = (wqbuf_firstindex-wqbuf_lastindex - 1)
1464 &(ARCMSR_MAX_QBUFFER - 1);
1465 if (my_empty_len >= user_len) {
1466 while (user_len > 0) {
1467 pQbuffer =
1468 &acb->wqbuffer[acb->wqbuf_lastindex];
1469 memcpy(pQbuffer, ptmpuserbuffer, 1);
1470 acb->wqbuf_lastindex++;
1471 acb->wqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
1472 ptmpuserbuffer++;
1473 user_len--;
1474 }
1475 if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_CLEARED) {
1476 acb->acb_flags &=
1477 ~ACB_F_MESSAGE_WQBUFFER_CLEARED;
1478 arcmsr_post_ioctldata2iop(acb);
1479 }
1480 } else {
1481 /* has error report sensedata */
1482 struct SENSE_DATA *sensebuffer =
1483 (struct SENSE_DATA *)cmd->sense_buffer;
1484 sensebuffer->ErrorCode = 0x70;
1485 sensebuffer->SenseKey = ILLEGAL_REQUEST;
1486 sensebuffer->AdditionalSenseLength = 0x0A;
1487 sensebuffer->AdditionalSenseCode = 0x20;
1488 sensebuffer->Valid = 1;
1489 retvalue = ARCMSR_MESSAGE_FAIL;
1490 }
1491 }
1492 kfree(ver_addr);
1493 }
1494 break;
1495
1496 case ARCMSR_MESSAGE_CLEAR_RQBUFFER: {
1497 uint8_t *pQbuffer = acb->rqbuffer;
1498
1499 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
1500 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
1501 arcmsr_iop_message_read(acb);
1502 }
1503 acb->acb_flags |= ACB_F_MESSAGE_RQBUFFER_CLEARED;
1504 acb->rqbuf_firstindex = 0;
1505 acb->rqbuf_lastindex = 0;
1506 memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER);
1507 pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK;
1508 }
1509 break;
1510
1511 case ARCMSR_MESSAGE_CLEAR_WQBUFFER: {
1512 uint8_t *pQbuffer = acb->wqbuffer;
1513
1514 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
1515 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
1516 arcmsr_iop_message_read(acb);
1517 }
1518 acb->acb_flags |=
1519 (ACB_F_MESSAGE_WQBUFFER_CLEARED |
1520 ACB_F_MESSAGE_WQBUFFER_READED);
1521 acb->wqbuf_firstindex = 0;
1522 acb->wqbuf_lastindex = 0;
1523 memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER);
1524 pcmdmessagefld->cmdmessage.ReturnCode =
1525 ARCMSR_MESSAGE_RETURNCODE_OK;
1526 }
1527 break;
1528
1529 case ARCMSR_MESSAGE_CLEAR_ALLQBUFFER: {
1530 uint8_t *pQbuffer;
1531
1532 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
1533 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
1534 arcmsr_iop_message_read(acb);
1535 }
1536 acb->acb_flags |=
1537 (ACB_F_MESSAGE_WQBUFFER_CLEARED
1538 | ACB_F_MESSAGE_RQBUFFER_CLEARED
1539 | ACB_F_MESSAGE_WQBUFFER_READED);
1540 acb->rqbuf_firstindex = 0;
1541 acb->rqbuf_lastindex = 0;
1542 acb->wqbuf_firstindex = 0;
1543 acb->wqbuf_lastindex = 0;
1544 pQbuffer = acb->rqbuffer;
1545 memset(pQbuffer, 0, sizeof(struct QBUFFER));
1546 pQbuffer = acb->wqbuffer;
1547 memset(pQbuffer, 0, sizeof(struct QBUFFER));
1548 pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK;
1549 }
1550 break;
1551
1552 case ARCMSR_MESSAGE_RETURN_CODE_3F: {
1553 pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_3F;
1554 }
1555 break;
1556
1557 case ARCMSR_MESSAGE_SAY_HELLO: {
1558 int8_t *hello_string = "Hello! I am ARCMSR";
1559
1560 memcpy(pcmdmessagefld->messagedatabuffer, hello_string
1561 , (int16_t)strlen(hello_string));
1562 pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK;
1563 }
1564 break;
1565
1566 case ARCMSR_MESSAGE_SAY_GOODBYE:
1567 arcmsr_iop_parking(acb);
1568 break;
1569
1570 case ARCMSR_MESSAGE_FLUSH_ADAPTER_CACHE:
1571 arcmsr_flush_adapter_cache(acb);
1572 break;
1573
1574 default:
1575 retvalue = ARCMSR_MESSAGE_FAIL;
1576 }
1577 message_out:
1578 sg = scsi_sglist(cmd);
1579 kunmap_atomic(buffer - sg->offset, KM_IRQ0);
1580 return retvalue;
1581 }
1582
1583 static struct CommandControlBlock *arcmsr_get_freeccb(struct AdapterControlBlock *acb)
1584 {
1585 struct list_head *head = &acb->ccb_free_list;
1586 struct CommandControlBlock *ccb = NULL;
1587
1588 if (!list_empty(head)) {
1589 ccb = list_entry(head->next, struct CommandControlBlock, list);
1590 list_del(head->next);
1591 }
1592 return ccb;
1593 }
1594
1595 static void arcmsr_handle_virtual_command(struct AdapterControlBlock *acb,
1596 struct scsi_cmnd *cmd)
1597 {
1598 switch (cmd->cmnd[0]) {
1599 case INQUIRY: {
1600 unsigned char inqdata[36];
1601 char *buffer;
1602 struct scatterlist *sg;
1603
1604 if (cmd->device->lun) {
1605 cmd->result = (DID_TIME_OUT << 16);
1606 cmd->scsi_done(cmd);
1607 return;
1608 }
1609 inqdata[0] = TYPE_PROCESSOR;
1610 /* Periph Qualifier & Periph Dev Type */
1611 inqdata[1] = 0;
1612 /* rem media bit & Dev Type Modifier */
1613 inqdata[2] = 0;
1614 /* ISO, ECMA, & ANSI versions */
1615 inqdata[4] = 31;
1616 /* length of additional data */
1617 strncpy(&inqdata[8], "Areca ", 8);
1618 /* Vendor Identification */
1619 strncpy(&inqdata[16], "RAID controller ", 16);
1620 /* Product Identification */
1621 strncpy(&inqdata[32], "R001", 4); /* Product Revision */
1622
1623 sg = scsi_sglist(cmd);
1624 buffer = kmap_atomic(sg_page(sg), KM_IRQ0) + sg->offset;
1625
1626 memcpy(buffer, inqdata, sizeof(inqdata));
1627 sg = scsi_sglist(cmd);
1628 kunmap_atomic(buffer - sg->offset, KM_IRQ0);
1629
1630 cmd->scsi_done(cmd);
1631 }
1632 break;
1633 case WRITE_BUFFER:
1634 case READ_BUFFER: {
1635 if (arcmsr_iop_message_xfer(acb, cmd))
1636 cmd->result = (DID_ERROR << 16);
1637 cmd->scsi_done(cmd);
1638 }
1639 break;
1640 default:
1641 cmd->scsi_done(cmd);
1642 }
1643 }
1644
1645 static int arcmsr_queue_command(struct scsi_cmnd *cmd,
1646 void (* done)(struct scsi_cmnd *))
1647 {
1648 struct Scsi_Host *host = cmd->device->host;
1649 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
1650 struct CommandControlBlock *ccb;
1651 int target = cmd->device->id;
1652 int lun = cmd->device->lun;
1653
1654 cmd->scsi_done = done;
1655 cmd->host_scribble = NULL;
1656 cmd->result = 0;
1657 if (acb->acb_flags & ACB_F_BUS_RESET) {
1658 printk(KERN_NOTICE "arcmsr%d: bus reset"
1659 " and return busy \n"
1660 , acb->host->host_no);
1661 return SCSI_MLQUEUE_HOST_BUSY;
1662 }
1663 if (target == 16) {
1664 /* virtual device for iop message transfer */
1665 arcmsr_handle_virtual_command(acb, cmd);
1666 return 0;
1667 }
1668 if (acb->devstate[target][lun] == ARECA_RAID_GONE) {
1669 uint8_t block_cmd;
1670
1671 block_cmd = cmd->cmnd[0] & 0x0f;
1672 if (block_cmd == 0x08 || block_cmd == 0x0a) {
1673 printk(KERN_NOTICE
1674 "arcmsr%d: block 'read/write'"
1675 "command with gone raid volume"
1676 " Cmd = %2x, TargetId = %d, Lun = %d \n"
1677 , acb->host->host_no
1678 , cmd->cmnd[0]
1679 , target, lun);
1680 cmd->result = (DID_NO_CONNECT << 16);
1681 cmd->scsi_done(cmd);
1682 return 0;
1683 }
1684 }
1685 if (atomic_read(&acb->ccboutstandingcount) >=
1686 ARCMSR_MAX_OUTSTANDING_CMD)
1687 return SCSI_MLQUEUE_HOST_BUSY;
1688
1689 ccb = arcmsr_get_freeccb(acb);
1690 if (!ccb)
1691 return SCSI_MLQUEUE_HOST_BUSY;
1692 if ( arcmsr_build_ccb( acb, ccb, cmd ) == FAILED ) {
1693 cmd->result = (DID_ERROR << 16) | (RESERVATION_CONFLICT << 1);
1694 cmd->scsi_done(cmd);
1695 return 0;
1696 }
1697 arcmsr_post_ccb(acb, ccb);
1698 return 0;
1699 }
1700
1701 static void arcmsr_get_hba_config(struct AdapterControlBlock *acb)
1702 {
1703 struct MessageUnit_A __iomem *reg = acb->pmuA;
1704 char *acb_firm_model = acb->firm_model;
1705 char *acb_firm_version = acb->firm_version;
1706 char __iomem *iop_firm_model = (char __iomem *)(&reg->message_rwbuffer[15]);
1707 char __iomem *iop_firm_version = (char __iomem *)(&reg->message_rwbuffer[17]);
1708 int count;
1709
1710 writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
1711 if (arcmsr_hba_wait_msgint_ready(acb)) {
1712 printk(KERN_NOTICE "arcmsr%d: wait 'get adapter firmware \
1713 miscellaneous data' timeout \n", acb->host->host_no);
1714 }
1715
1716 count = 8;
1717 while (count) {
1718 *acb_firm_model = readb(iop_firm_model);
1719 acb_firm_model++;
1720 iop_firm_model++;
1721 count--;
1722 }
1723
1724 count = 16;
1725 while (count) {
1726 *acb_firm_version = readb(iop_firm_version);
1727 acb_firm_version++;
1728 iop_firm_version++;
1729 count--;
1730 }
1731
1732 printk(KERN_INFO "ARECA RAID ADAPTER%d: FIRMWARE VERSION %s \n"
1733 , acb->host->host_no
1734 , acb->firm_version);
1735
1736 acb->firm_request_len = readl(&reg->message_rwbuffer[1]);
1737 acb->firm_numbers_queue = readl(&reg->message_rwbuffer[2]);
1738 acb->firm_sdram_size = readl(&reg->message_rwbuffer[3]);
1739 acb->firm_hd_channels = readl(&reg->message_rwbuffer[4]);
1740 }
1741
1742 static void arcmsr_get_hbb_config(struct AdapterControlBlock *acb)
1743 {
1744 struct MessageUnit_B *reg = acb->pmuB;
1745 uint32_t __iomem *lrwbuffer = reg->msgcode_rwbuffer_reg;
1746 char *acb_firm_model = acb->firm_model;
1747 char *acb_firm_version = acb->firm_version;
1748 char __iomem *iop_firm_model = (char __iomem *)(&lrwbuffer[15]);
1749 /*firm_model,15,60-67*/
1750 char __iomem *iop_firm_version = (char __iomem *)(&lrwbuffer[17]);
1751 /*firm_version,17,68-83*/
1752 int count;
1753
1754 writel(ARCMSR_MESSAGE_GET_CONFIG, reg->drv2iop_doorbell_reg);
1755 if (arcmsr_hbb_wait_msgint_ready(acb)) {
1756 printk(KERN_NOTICE "arcmsr%d: wait 'get adapter firmware \
1757 miscellaneous data' timeout \n", acb->host->host_no);
1758 }
1759
1760 count = 8;
1761 while (count)
1762 {
1763 *acb_firm_model = readb(iop_firm_model);
1764 acb_firm_model++;
1765 iop_firm_model++;
1766 count--;
1767 }
1768
1769 count = 16;
1770 while (count)
1771 {
1772 *acb_firm_version = readb(iop_firm_version);
1773 acb_firm_version++;
1774 iop_firm_version++;
1775 count--;
1776 }
1777
1778 printk(KERN_INFO "ARECA RAID ADAPTER%d: FIRMWARE VERSION %s \n",
1779 acb->host->host_no,
1780 acb->firm_version);
1781
1782 lrwbuffer++;
1783 acb->firm_request_len = readl(lrwbuffer++);
1784 /*firm_request_len,1,04-07*/
1785 acb->firm_numbers_queue = readl(lrwbuffer++);
1786 /*firm_numbers_queue,2,08-11*/
1787 acb->firm_sdram_size = readl(lrwbuffer++);
1788 /*firm_sdram_size,3,12-15*/
1789 acb->firm_hd_channels = readl(lrwbuffer);
1790 /*firm_ide_channels,4,16-19*/
1791 }
1792
1793 static void arcmsr_get_firmware_spec(struct AdapterControlBlock *acb)
1794 {
1795 switch (acb->adapter_type) {
1796 case ACB_ADAPTER_TYPE_A: {
1797 arcmsr_get_hba_config(acb);
1798 }
1799 break;
1800
1801 case ACB_ADAPTER_TYPE_B: {
1802 arcmsr_get_hbb_config(acb);
1803 }
1804 break;
1805 }
1806 }
1807
1808 static void arcmsr_polling_hba_ccbdone(struct AdapterControlBlock *acb,
1809 struct CommandControlBlock *poll_ccb)
1810 {
1811 struct MessageUnit_A __iomem *reg = acb->pmuA;
1812 struct CommandControlBlock *ccb;
1813 uint32_t flag_ccb, outbound_intstatus, poll_ccb_done = 0, poll_count = 0;
1814
1815 polling_hba_ccb_retry:
1816 poll_count++;
1817 outbound_intstatus = readl(&reg->outbound_intstatus) & acb->outbound_int_enable;
1818 writel(outbound_intstatus, &reg->outbound_intstatus);/*clear interrupt*/
1819 while (1) {
1820 if ((flag_ccb = readl(&reg->outbound_queueport)) == 0xFFFFFFFF) {
1821 if (poll_ccb_done)
1822 break;
1823 else {
1824 msleep(25);
1825 if (poll_count > 100)
1826 break;
1827 goto polling_hba_ccb_retry;
1828 }
1829 }
1830 ccb = (struct CommandControlBlock *)(acb->vir2phy_offset + (flag_ccb << 5));
1831 poll_ccb_done = (ccb == poll_ccb) ? 1:0;
1832 if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) {
1833 if ((ccb->startdone == ARCMSR_CCB_ABORTED) || (ccb == poll_ccb)) {
1834 printk(KERN_NOTICE "arcmsr%d: scsi id = %d lun = %d ccb = '0x%p'"
1835 " poll command abort successfully \n"
1836 , acb->host->host_no
1837 , ccb->pcmd->device->id
1838 , ccb->pcmd->device->lun
1839 , ccb);
1840 ccb->pcmd->result = DID_ABORT << 16;
1841 arcmsr_ccb_complete(ccb, 1);
1842 poll_ccb_done = 1;
1843 continue;
1844 }
1845 printk(KERN_NOTICE "arcmsr%d: polling get an illegal ccb"
1846 " command done ccb = '0x%p'"
1847 "ccboutstandingcount = %d \n"
1848 , acb->host->host_no
1849 , ccb
1850 , atomic_read(&acb->ccboutstandingcount));
1851 continue;
1852 }
1853 arcmsr_report_ccb_state(acb, ccb, flag_ccb);
1854 }
1855 }
1856
1857 static void arcmsr_polling_hbb_ccbdone(struct AdapterControlBlock *acb,
1858 struct CommandControlBlock *poll_ccb)
1859 {
1860 struct MessageUnit_B *reg = acb->pmuB;
1861 struct CommandControlBlock *ccb;
1862 uint32_t flag_ccb, poll_ccb_done = 0, poll_count = 0;
1863 int index;
1864
1865 polling_hbb_ccb_retry:
1866 poll_count++;
1867 /* clear doorbell interrupt */
1868 writel(ARCMSR_DOORBELL_INT_CLEAR_PATTERN, reg->iop2drv_doorbell_reg);
1869 while (1) {
1870 index = reg->doneq_index;
1871 if ((flag_ccb = readl(&reg->done_qbuffer[index])) == 0) {
1872 if (poll_ccb_done)
1873 break;
1874 else {
1875 msleep(25);
1876 if (poll_count > 100)
1877 break;
1878 goto polling_hbb_ccb_retry;
1879 }
1880 }
1881 writel(0, &reg->done_qbuffer[index]);
1882 index++;
1883 /*if last index number set it to 0 */
1884 index %= ARCMSR_MAX_HBB_POSTQUEUE;
1885 reg->doneq_index = index;
1886 /* check ifcommand done with no error*/
1887 ccb = (struct CommandControlBlock *)\
1888 (acb->vir2phy_offset + (flag_ccb << 5));/*frame must be 32 bytes aligned*/
1889 poll_ccb_done = (ccb == poll_ccb) ? 1:0;
1890 if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) {
1891 if ((ccb->startdone == ARCMSR_CCB_ABORTED) || (ccb == poll_ccb)) {
1892 printk(KERN_NOTICE "arcmsr%d: \
1893 scsi id = %d lun = %d ccb = '0x%p' poll command abort successfully \n"
1894 ,acb->host->host_no
1895 ,ccb->pcmd->device->id
1896 ,ccb->pcmd->device->lun
1897 ,ccb);
1898 ccb->pcmd->result = DID_ABORT << 16;
1899 arcmsr_ccb_complete(ccb, 1);
1900 continue;
1901 }
1902 printk(KERN_NOTICE "arcmsr%d: polling get an illegal ccb"
1903 " command done ccb = '0x%p'"
1904 "ccboutstandingcount = %d \n"
1905 , acb->host->host_no
1906 , ccb
1907 , atomic_read(&acb->ccboutstandingcount));
1908 continue;
1909 }
1910 arcmsr_report_ccb_state(acb, ccb, flag_ccb);
1911 } /*drain reply FIFO*/
1912 }
1913
1914 static void arcmsr_polling_ccbdone(struct AdapterControlBlock *acb,
1915 struct CommandControlBlock *poll_ccb)
1916 {
1917 switch (acb->adapter_type) {
1918
1919 case ACB_ADAPTER_TYPE_A: {
1920 arcmsr_polling_hba_ccbdone(acb,poll_ccb);
1921 }
1922 break;
1923
1924 case ACB_ADAPTER_TYPE_B: {
1925 arcmsr_polling_hbb_ccbdone(acb,poll_ccb);
1926 }
1927 }
1928 }
1929
1930 static int arcmsr_iop_confirm(struct AdapterControlBlock *acb)
1931 {
1932 uint32_t cdb_phyaddr, ccb_phyaddr_hi32;
1933 dma_addr_t dma_coherent_handle;
1934 /*
1935 ********************************************************************
1936 ** here we need to tell iop 331 our freeccb.HighPart
1937 ** if freeccb.HighPart is not zero
1938 ********************************************************************
1939 */
1940 dma_coherent_handle = acb->dma_coherent_handle;
1941 cdb_phyaddr = (uint32_t)(dma_coherent_handle);
1942 ccb_phyaddr_hi32 = (uint32_t)((cdb_phyaddr >> 16) >> 16);
1943 /*
1944 ***********************************************************************
1945 ** if adapter type B, set window of "post command Q"
1946 ***********************************************************************
1947 */
1948 switch (acb->adapter_type) {
1949
1950 case ACB_ADAPTER_TYPE_A: {
1951 if (ccb_phyaddr_hi32 != 0) {
1952 struct MessageUnit_A __iomem *reg = acb->pmuA;
1953 uint32_t intmask_org;
1954 intmask_org = arcmsr_disable_outbound_ints(acb);
1955 writel(ARCMSR_SIGNATURE_SET_CONFIG, \
1956 &reg->message_rwbuffer[0]);
1957 writel(ccb_phyaddr_hi32, &reg->message_rwbuffer[1]);
1958 writel(ARCMSR_INBOUND_MESG0_SET_CONFIG, \
1959 &reg->inbound_msgaddr0);
1960 if (arcmsr_hba_wait_msgint_ready(acb)) {
1961 printk(KERN_NOTICE "arcmsr%d: ""set ccb high \
1962 part physical address timeout\n",
1963 acb->host->host_no);
1964 return 1;
1965 }
1966 arcmsr_enable_outbound_ints(acb, intmask_org);
1967 }
1968 }
1969 break;
1970
1971 case ACB_ADAPTER_TYPE_B: {
1972 unsigned long post_queue_phyaddr;
1973 uint32_t __iomem *rwbuffer;
1974
1975 struct MessageUnit_B *reg = acb->pmuB;
1976 uint32_t intmask_org;
1977 intmask_org = arcmsr_disable_outbound_ints(acb);
1978 reg->postq_index = 0;
1979 reg->doneq_index = 0;
1980 writel(ARCMSR_MESSAGE_SET_POST_WINDOW, reg->drv2iop_doorbell_reg);
1981 if (arcmsr_hbb_wait_msgint_ready(acb)) {
1982 printk(KERN_NOTICE "arcmsr%d:can not set diver mode\n", \
1983 acb->host->host_no);
1984 return 1;
1985 }
1986 post_queue_phyaddr = cdb_phyaddr + ARCMSR_MAX_FREECCB_NUM * \
1987 sizeof(struct CommandControlBlock) + offsetof(struct MessageUnit_B, post_qbuffer) ;
1988 rwbuffer = reg->msgcode_rwbuffer_reg;
1989 /* driver "set config" signature */
1990 writel(ARCMSR_SIGNATURE_SET_CONFIG, rwbuffer++);
1991 /* normal should be zero */
1992 writel(ccb_phyaddr_hi32, rwbuffer++);
1993 /* postQ size (256 + 8)*4 */
1994 writel(post_queue_phyaddr, rwbuffer++);
1995 /* doneQ size (256 + 8)*4 */
1996 writel(post_queue_phyaddr + 1056, rwbuffer++);
1997 /* ccb maxQ size must be --> [(256 + 8)*4]*/
1998 writel(1056, rwbuffer);
1999
2000 writel(ARCMSR_MESSAGE_SET_CONFIG, reg->drv2iop_doorbell_reg);
2001 if (arcmsr_hbb_wait_msgint_ready(acb)) {
2002 printk(KERN_NOTICE "arcmsr%d: 'set command Q window' \
2003 timeout \n",acb->host->host_no);
2004 return 1;
2005 }
2006
2007 writel(ARCMSR_MESSAGE_START_DRIVER_MODE, reg->drv2iop_doorbell_reg);
2008 if (arcmsr_hbb_wait_msgint_ready(acb)) {
2009 printk(KERN_NOTICE "arcmsr%d: 'can not set diver mode \n"\
2010 ,acb->host->host_no);
2011 return 1;
2012 }
2013 arcmsr_enable_outbound_ints(acb, intmask_org);
2014 }
2015 break;
2016 }
2017 return 0;
2018 }
2019
2020 static void arcmsr_wait_firmware_ready(struct AdapterControlBlock *acb)
2021 {
2022 uint32_t firmware_state = 0;
2023
2024 switch (acb->adapter_type) {
2025
2026 case ACB_ADAPTER_TYPE_A: {
2027 struct MessageUnit_A __iomem *reg = acb->pmuA;
2028 do {
2029 firmware_state = readl(&reg->outbound_msgaddr1);
2030 } while ((firmware_state & ARCMSR_OUTBOUND_MESG1_FIRMWARE_OK) == 0);
2031 }
2032 break;
2033
2034 case ACB_ADAPTER_TYPE_B: {
2035 struct MessageUnit_B *reg = acb->pmuB;
2036 do {
2037 firmware_state = readl(reg->iop2drv_doorbell_reg);
2038 } while ((firmware_state & ARCMSR_MESSAGE_FIRMWARE_OK) == 0);
2039 writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT, reg->drv2iop_doorbell_reg);
2040 }
2041 break;
2042 }
2043 }
2044
2045 static void arcmsr_start_hba_bgrb(struct AdapterControlBlock *acb)
2046 {
2047 struct MessageUnit_A __iomem *reg = acb->pmuA;
2048 acb->acb_flags |= ACB_F_MSG_START_BGRB;
2049 writel(ARCMSR_INBOUND_MESG0_START_BGRB, &reg->inbound_msgaddr0);
2050 if (arcmsr_hba_wait_msgint_ready(acb)) {
2051 printk(KERN_NOTICE "arcmsr%d: wait 'start adapter background \
2052 rebulid' timeout \n", acb->host->host_no);
2053 }
2054 }
2055
2056 static void arcmsr_start_hbb_bgrb(struct AdapterControlBlock *acb)
2057 {
2058 struct MessageUnit_B *reg = acb->pmuB;
2059 acb->acb_flags |= ACB_F_MSG_START_BGRB;
2060 writel(ARCMSR_MESSAGE_START_BGRB, reg->drv2iop_doorbell_reg);
2061 if (arcmsr_hbb_wait_msgint_ready(acb)) {
2062 printk(KERN_NOTICE "arcmsr%d: wait 'start adapter background \
2063 rebulid' timeout \n",acb->host->host_no);
2064 }
2065 }
2066
2067 static void arcmsr_start_adapter_bgrb(struct AdapterControlBlock *acb)
2068 {
2069 switch (acb->adapter_type) {
2070 case ACB_ADAPTER_TYPE_A:
2071 arcmsr_start_hba_bgrb(acb);
2072 break;
2073 case ACB_ADAPTER_TYPE_B:
2074 arcmsr_start_hbb_bgrb(acb);
2075 break;
2076 }
2077 }
2078
2079 static void arcmsr_clear_doorbell_queue_buffer(struct AdapterControlBlock *acb)
2080 {
2081 switch (acb->adapter_type) {
2082 case ACB_ADAPTER_TYPE_A: {
2083 struct MessageUnit_A __iomem *reg = acb->pmuA;
2084 uint32_t outbound_doorbell;
2085 /* empty doorbell Qbuffer if door bell ringed */
2086 outbound_doorbell = readl(&reg->outbound_doorbell);
2087 /*clear doorbell interrupt */
2088 writel(outbound_doorbell, &reg->outbound_doorbell);
2089 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, &reg->inbound_doorbell);
2090 }
2091 break;
2092
2093 case ACB_ADAPTER_TYPE_B: {
2094 struct MessageUnit_B *reg = acb->pmuB;
2095 /*clear interrupt and message state*/
2096 writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN, reg->iop2drv_doorbell_reg);
2097 writel(ARCMSR_DRV2IOP_DATA_READ_OK, reg->drv2iop_doorbell_reg);
2098 /* let IOP know data has been read */
2099 }
2100 break;
2101 }
2102 }
2103
2104 static void arcmsr_enable_eoi_mode(struct AdapterControlBlock *acb)
2105 {
2106 switch (acb->adapter_type) {
2107 case ACB_ADAPTER_TYPE_A:
2108 return;
2109 case ACB_ADAPTER_TYPE_B:
2110 {
2111 struct MessageUnit_B *reg = acb->pmuB;
2112 writel(ARCMSR_MESSAGE_ACTIVE_EOI_MODE, reg->drv2iop_doorbell_reg);
2113 if(arcmsr_hbb_wait_msgint_ready(acb)) {
2114 printk(KERN_NOTICE "ARCMSR IOP enables EOI_MODE TIMEOUT");
2115 return;
2116 }
2117 }
2118 break;
2119 }
2120 return;
2121 }
2122
2123 static void arcmsr_iop_init(struct AdapterControlBlock *acb)
2124 {
2125 uint32_t intmask_org;
2126
2127 /* disable all outbound interrupt */
2128 intmask_org = arcmsr_disable_outbound_ints(acb);
2129 arcmsr_wait_firmware_ready(acb);
2130 arcmsr_iop_confirm(acb);
2131 arcmsr_get_firmware_spec(acb);
2132 /*start background rebuild*/
2133 arcmsr_start_adapter_bgrb(acb);
2134 /* empty doorbell Qbuffer if door bell ringed */
2135 arcmsr_clear_doorbell_queue_buffer(acb);
2136 arcmsr_enable_eoi_mode(acb);
2137 /* enable outbound Post Queue,outbound doorbell Interrupt */
2138 arcmsr_enable_outbound_ints(acb, intmask_org);
2139 acb->acb_flags |= ACB_F_IOP_INITED;
2140 }
2141
2142 static void arcmsr_iop_reset(struct AdapterControlBlock *acb)
2143 {
2144 struct CommandControlBlock *ccb;
2145 uint32_t intmask_org;
2146 int i = 0;
2147
2148 if (atomic_read(&acb->ccboutstandingcount) != 0) {
2149 /* talk to iop 331 outstanding command aborted */
2150 arcmsr_abort_allcmd(acb);
2151
2152 /* wait for 3 sec for all command aborted*/
2153 ssleep(3);
2154
2155 /* disable all outbound interrupt */
2156 intmask_org = arcmsr_disable_outbound_ints(acb);
2157 /* clear all outbound posted Q */
2158 arcmsr_done4abort_postqueue(acb);
2159 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
2160 ccb = acb->pccb_pool[i];
2161 if (ccb->startdone == ARCMSR_CCB_START) {
2162 ccb->startdone = ARCMSR_CCB_ABORTED;
2163 arcmsr_ccb_complete(ccb, 1);
2164 }
2165 }
2166 /* enable all outbound interrupt */
2167 arcmsr_enable_outbound_ints(acb, intmask_org);
2168 }
2169 }
2170
2171 static int arcmsr_bus_reset(struct scsi_cmnd *cmd)
2172 {
2173 struct AdapterControlBlock *acb =
2174 (struct AdapterControlBlock *)cmd->device->host->hostdata;
2175 int i;
2176
2177 acb->num_resets++;
2178 acb->acb_flags |= ACB_F_BUS_RESET;
2179 for (i = 0; i < 400; i++) {
2180 if (!atomic_read(&acb->ccboutstandingcount))
2181 break;
2182 arcmsr_interrupt(acb);/* FIXME: need spinlock */
2183 msleep(25);
2184 }
2185 arcmsr_iop_reset(acb);
2186 acb->acb_flags &= ~ACB_F_BUS_RESET;
2187 return SUCCESS;
2188 }
2189
2190 static void arcmsr_abort_one_cmd(struct AdapterControlBlock *acb,
2191 struct CommandControlBlock *ccb)
2192 {
2193 u32 intmask;
2194
2195 ccb->startdone = ARCMSR_CCB_ABORTED;
2196
2197 /*
2198 ** Wait for 3 sec for all command done.
2199 */
2200 ssleep(3);
2201
2202 intmask = arcmsr_disable_outbound_ints(acb);
2203 arcmsr_polling_ccbdone(acb, ccb);
2204 arcmsr_enable_outbound_ints(acb, intmask);
2205 }
2206
2207 static int arcmsr_abort(struct scsi_cmnd *cmd)
2208 {
2209 struct AdapterControlBlock *acb =
2210 (struct AdapterControlBlock *)cmd->device->host->hostdata;
2211 int i = 0;
2212
2213 printk(KERN_NOTICE
2214 "arcmsr%d: abort device command of scsi id = %d lun = %d \n",
2215 acb->host->host_no, cmd->device->id, cmd->device->lun);
2216 acb->num_aborts++;
2217 /*
2218 ************************************************
2219 ** the all interrupt service routine is locked
2220 ** we need to handle it as soon as possible and exit
2221 ************************************************
2222 */
2223 if (!atomic_read(&acb->ccboutstandingcount))
2224 return SUCCESS;
2225
2226 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
2227 struct CommandControlBlock *ccb = acb->pccb_pool[i];
2228 if (ccb->startdone == ARCMSR_CCB_START && ccb->pcmd == cmd) {
2229 arcmsr_abort_one_cmd(acb, ccb);
2230 break;
2231 }
2232 }
2233
2234 return SUCCESS;
2235 }
2236
2237 static const char *arcmsr_info(struct Scsi_Host *host)
2238 {
2239 struct AdapterControlBlock *acb =
2240 (struct AdapterControlBlock *) host->hostdata;
2241 static char buf[256];
2242 char *type;
2243 int raid6 = 1;
2244
2245 switch (acb->pdev->device) {
2246 case PCI_DEVICE_ID_ARECA_1110:
2247 case PCI_DEVICE_ID_ARECA_1200:
2248 case PCI_DEVICE_ID_ARECA_1202:
2249 case PCI_DEVICE_ID_ARECA_1210:
2250 raid6 = 0;
2251 /*FALLTHRU*/
2252 case PCI_DEVICE_ID_ARECA_1120:
2253 case PCI_DEVICE_ID_ARECA_1130:
2254 case PCI_DEVICE_ID_ARECA_1160:
2255 case PCI_DEVICE_ID_ARECA_1170:
2256 case PCI_DEVICE_ID_ARECA_1201:
2257 case PCI_DEVICE_ID_ARECA_1220:
2258 case PCI_DEVICE_ID_ARECA_1230:
2259 case PCI_DEVICE_ID_ARECA_1260:
2260 case PCI_DEVICE_ID_ARECA_1270:
2261 case PCI_DEVICE_ID_ARECA_1280:
2262 type = "SATA";
2263 break;
2264 case PCI_DEVICE_ID_ARECA_1380:
2265 case PCI_DEVICE_ID_ARECA_1381:
2266 case PCI_DEVICE_ID_ARECA_1680:
2267 case PCI_DEVICE_ID_ARECA_1681:
2268 type = "SAS";
2269 break;
2270 default:
2271 type = "X-TYPE";
2272 break;
2273 }
2274 sprintf(buf, "Areca %s Host Adapter RAID Controller%s\n %s",
2275 type, raid6 ? "( RAID6 capable)" : "",
2276 ARCMSR_DRIVER_VERSION);
2277 return buf;
2278 }
2279 #ifdef CONFIG_SCSI_ARCMSR_AER
2280 static pci_ers_result_t arcmsr_pci_slot_reset(struct pci_dev *pdev)
2281 {
2282 struct Scsi_Host *host = pci_get_drvdata(pdev);
2283 struct AdapterControlBlock *acb =
2284 (struct AdapterControlBlock *) host->hostdata;
2285 uint32_t intmask_org;
2286 int i, j;
2287
2288 if (pci_enable_device(pdev)) {
2289 return PCI_ERS_RESULT_DISCONNECT;
2290 }
2291 pci_set_master(pdev);
2292 intmask_org = arcmsr_disable_outbound_ints(acb);
2293 acb->acb_flags |= (ACB_F_MESSAGE_WQBUFFER_CLEARED |
2294 ACB_F_MESSAGE_RQBUFFER_CLEARED |
2295 ACB_F_MESSAGE_WQBUFFER_READED);
2296 acb->acb_flags &= ~ACB_F_SCSISTOPADAPTER;
2297 for (i = 0; i < ARCMSR_MAX_TARGETID; i++)
2298 for (j = 0; j < ARCMSR_MAX_TARGETLUN; j++)
2299 acb->devstate[i][j] = ARECA_RAID_GONE;
2300
2301 arcmsr_wait_firmware_ready(acb);
2302 arcmsr_iop_confirm(acb);
2303 /* disable all outbound interrupt */
2304 arcmsr_get_firmware_spec(acb);
2305 /*start background rebuild*/
2306 arcmsr_start_adapter_bgrb(acb);
2307 /* empty doorbell Qbuffer if door bell ringed */
2308 arcmsr_clear_doorbell_queue_buffer(acb);
2309 arcmsr_enable_eoi_mode(acb);
2310 /* enable outbound Post Queue,outbound doorbell Interrupt */
2311 arcmsr_enable_outbound_ints(acb, intmask_org);
2312 acb->acb_flags |= ACB_F_IOP_INITED;
2313
2314 pci_enable_pcie_error_reporting(pdev);
2315 return PCI_ERS_RESULT_RECOVERED;
2316 }
2317
2318 static void arcmsr_pci_ers_need_reset_forepart(struct pci_dev *pdev)
2319 {
2320 struct Scsi_Host *host = pci_get_drvdata(pdev);
2321 struct AdapterControlBlock *acb = (struct AdapterControlBlock *)host->hostdata;
2322 struct CommandControlBlock *ccb;
2323 uint32_t intmask_org;
2324 int i = 0;
2325
2326 if (atomic_read(&acb->ccboutstandingcount) != 0) {
2327 /* talk to iop 331 outstanding command aborted */
2328 arcmsr_abort_allcmd(acb);
2329 /* wait for 3 sec for all command aborted*/
2330 ssleep(3);
2331 /* disable all outbound interrupt */
2332 intmask_org = arcmsr_disable_outbound_ints(acb);
2333 /* clear all outbound posted Q */
2334 arcmsr_done4abort_postqueue(acb);
2335 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
2336 ccb = acb->pccb_pool[i];
2337 if (ccb->startdone == ARCMSR_CCB_START) {
2338 ccb->startdone = ARCMSR_CCB_ABORTED;
2339 arcmsr_ccb_complete(ccb, 1);
2340 }
2341 }
2342 /* enable all outbound interrupt */
2343 arcmsr_enable_outbound_ints(acb, intmask_org);
2344 }
2345 pci_disable_device(pdev);
2346 }
2347
2348 static void arcmsr_pci_ers_disconnect_forepart(struct pci_dev *pdev)
2349 {
2350 struct Scsi_Host *host = pci_get_drvdata(pdev);
2351 struct AdapterControlBlock *acb = \
2352 (struct AdapterControlBlock *)host->hostdata;
2353
2354 arcmsr_stop_adapter_bgrb(acb);
2355 arcmsr_flush_adapter_cache(acb);
2356 }
2357
2358 static pci_ers_result_t arcmsr_pci_error_detected(struct pci_dev *pdev,
2359 pci_channel_state_t state)
2360 {
2361 switch (state) {
2362 case pci_channel_io_frozen:
2363 arcmsr_pci_ers_need_reset_forepart(pdev);
2364 return PCI_ERS_RESULT_NEED_RESET;
2365 case pci_channel_io_perm_failure:
2366 arcmsr_pci_ers_disconnect_forepart(pdev);
2367 return PCI_ERS_RESULT_DISCONNECT;
2368 break;
2369 default:
2370 return PCI_ERS_RESULT_NEED_RESET;
2371 }
2372 }
2373 #endif
linux 2.6 git repository for openrd