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Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/kyle/parisc-2.6
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / scsi / arcmsr / arcmsr_hba.c
blob05a78e515a24101caa7dd6d9b4891cfe86312d3d
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/slab.h>
60 #include <linux/pci.h>
61 #include <linux/aer.h>
62 #include <asm/dma.h>
63 #include <asm/io.h>
64 #include <asm/system.h>
65 #include <asm/uaccess.h>
66 #include <scsi/scsi_host.h>
67 #include <scsi/scsi.h>
68 #include <scsi/scsi_cmnd.h>
69 #include <scsi/scsi_tcq.h>
70 #include <scsi/scsi_device.h>
71 #include <scsi/scsi_transport.h>
72 #include <scsi/scsicam.h>
73 #include "arcmsr.h"
74 MODULE_AUTHOR("Nick Cheng <support@areca.com.tw>");
75 MODULE_DESCRIPTION("ARECA (ARC11xx/12xx/16xx/1880) SATA/SAS RAID Host Bus Adapter");
76 MODULE_LICENSE("Dual BSD/GPL");
77 MODULE_VERSION(ARCMSR_DRIVER_VERSION);
78 static int sleeptime = 10;
79 static int retrycount = 30;
80 wait_queue_head_t wait_q;
81 static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb,
82 struct scsi_cmnd *cmd);
83 static int arcmsr_iop_confirm(struct AdapterControlBlock *acb);
84 static int arcmsr_abort(struct scsi_cmnd *);
85 static int arcmsr_bus_reset(struct scsi_cmnd *);
86 static int arcmsr_bios_param(struct scsi_device *sdev,
87 struct block_device *bdev, sector_t capacity, int *info);
88 static int arcmsr_queue_command(struct scsi_cmnd *cmd,
89 void (*done) (struct scsi_cmnd *));
90 static int arcmsr_probe(struct pci_dev *pdev,
91 const struct pci_device_id *id);
92 static void arcmsr_remove(struct pci_dev *pdev);
93 static void arcmsr_shutdown(struct pci_dev *pdev);
94 static void arcmsr_iop_init(struct AdapterControlBlock *acb);
95 static void arcmsr_free_ccb_pool(struct AdapterControlBlock *acb);
96 static u32 arcmsr_disable_outbound_ints(struct AdapterControlBlock *acb);
97 static void arcmsr_stop_adapter_bgrb(struct AdapterControlBlock *acb);
98 static void arcmsr_flush_hba_cache(struct AdapterControlBlock *acb);
99 static void arcmsr_flush_hbb_cache(struct AdapterControlBlock *acb);
100 static void arcmsr_request_device_map(unsigned long pacb);
101 static void arcmsr_request_hba_device_map(struct AdapterControlBlock *acb);
102 static void arcmsr_request_hbb_device_map(struct AdapterControlBlock *acb);
103 static void arcmsr_request_hbc_device_map(struct AdapterControlBlock *acb);
104 static void arcmsr_message_isr_bh_fn(struct work_struct *work);
105 static bool arcmsr_get_firmware_spec(struct AdapterControlBlock *acb);
106 static void arcmsr_start_adapter_bgrb(struct AdapterControlBlock *acb);
107 static void arcmsr_hbc_message_isr(struct AdapterControlBlock *pACB);
108 static void arcmsr_hardware_reset(struct AdapterControlBlock *acb);
109 static const char *arcmsr_info(struct Scsi_Host *);
110 static irqreturn_t arcmsr_interrupt(struct AdapterControlBlock *acb);
111 static int arcmsr_adjust_disk_queue_depth(struct scsi_device *sdev,
112 int queue_depth, int reason)
113 {
114 if (reason != SCSI_QDEPTH_DEFAULT)
115 return -EOPNOTSUPP;
116
117 if (queue_depth > ARCMSR_MAX_CMD_PERLUN)
118 queue_depth = ARCMSR_MAX_CMD_PERLUN;
119 scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG, queue_depth);
120 return queue_depth;
121 }
122
123 static struct scsi_host_template arcmsr_scsi_host_template = {
124 .module = THIS_MODULE,
125 .name = "ARCMSR ARECA SATA/SAS RAID Controller"
126 ARCMSR_DRIVER_VERSION,
127 .info = arcmsr_info,
128 .queuecommand = arcmsr_queue_command,
129 .eh_abort_handler = arcmsr_abort,
130 .eh_bus_reset_handler = arcmsr_bus_reset,
131 .bios_param = arcmsr_bios_param,
132 .change_queue_depth = arcmsr_adjust_disk_queue_depth,
133 .can_queue = ARCMSR_MAX_FREECCB_NUM,
134 .this_id = ARCMSR_SCSI_INITIATOR_ID,
135 .sg_tablesize = ARCMSR_DEFAULT_SG_ENTRIES,
136 .max_sectors = ARCMSR_MAX_XFER_SECTORS_C,
137 .cmd_per_lun = ARCMSR_MAX_CMD_PERLUN,
138 .use_clustering = ENABLE_CLUSTERING,
139 .shost_attrs = arcmsr_host_attrs,
140 };
141 static struct pci_device_id arcmsr_device_id_table[] = {
142 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1110)},
143 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1120)},
144 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1130)},
145 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1160)},
146 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1170)},
147 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1200)},
148 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1201)},
149 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1202)},
150 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1210)},
151 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1220)},
152 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1230)},
153 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1260)},
154 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1270)},
155 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1280)},
156 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1380)},
157 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1381)},
158 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1680)},
159 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1681)},
160 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1880)},
161 {0, 0}, /* Terminating entry */
162 };
163 MODULE_DEVICE_TABLE(pci, arcmsr_device_id_table);
164 static struct pci_driver arcmsr_pci_driver = {
165 .name = "arcmsr",
166 .id_table = arcmsr_device_id_table,
167 .probe = arcmsr_probe,
168 .remove = arcmsr_remove,
169 .shutdown = arcmsr_shutdown,
170 };
171 /*
172 ****************************************************************************
173 ****************************************************************************
174 */
175 int arcmsr_sleep_for_bus_reset(struct scsi_cmnd *cmd)
176 {
177 struct Scsi_Host *shost = NULL;
178 int i, isleep;
179 shost = cmd->device->host;
180 isleep = sleeptime / 10;
181 if (isleep > 0) {
182 for (i = 0; i < isleep; i++) {
183 msleep(10000);
184 }
185 }
186
187 isleep = sleeptime % 10;
188 if (isleep > 0) {
189 msleep(isleep*1000);
190 }
191 printk(KERN_NOTICE "wake-up\n");
192 return 0;
193 }
194
195 static void arcmsr_free_hbb_mu(struct AdapterControlBlock *acb)
196 {
197 switch (acb->adapter_type) {
198 case ACB_ADAPTER_TYPE_A:
199 case ACB_ADAPTER_TYPE_C:
200 break;
201 case ACB_ADAPTER_TYPE_B:{
202 dma_free_coherent(&acb->pdev->dev,
203 sizeof(struct MessageUnit_B),
204 acb->pmuB, acb->dma_coherent_handle_hbb_mu);
205 }
206 }
207 }
208
209 static bool arcmsr_remap_pciregion(struct AdapterControlBlock *acb)
210 {
211 struct pci_dev *pdev = acb->pdev;
212 switch (acb->adapter_type){
213 case ACB_ADAPTER_TYPE_A:{
214 acb->pmuA = ioremap(pci_resource_start(pdev,0), pci_resource_len(pdev,0));
215 if (!acb->pmuA) {
216 printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n", acb->host->host_no);
217 return false;
218 }
219 break;
220 }
221 case ACB_ADAPTER_TYPE_B:{
222 void __iomem *mem_base0, *mem_base1;
223 mem_base0 = ioremap(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0));
224 if (!mem_base0) {
225 printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n", acb->host->host_no);
226 return false;
227 }
228 mem_base1 = ioremap(pci_resource_start(pdev, 2), pci_resource_len(pdev, 2));
229 if (!mem_base1) {
230 iounmap(mem_base0);
231 printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n", acb->host->host_no);
232 return false;
233 }
234 acb->mem_base0 = mem_base0;
235 acb->mem_base1 = mem_base1;
236 break;
237 }
238 case ACB_ADAPTER_TYPE_C:{
239 acb->pmuC = ioremap_nocache(pci_resource_start(pdev, 1), pci_resource_len(pdev, 1));
240 if (!acb->pmuC) {
241 printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n", acb->host->host_no);
242 return false;
243 }
244 if (readl(&acb->pmuC->outbound_doorbell) & ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE) {
245 writel(ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE_DOORBELL_CLEAR, &acb->pmuC->outbound_doorbell_clear);/*clear interrupt*/
246 return true;
247 }
248 break;
249 }
250 }
251 return true;
252 }
253
254 static void arcmsr_unmap_pciregion(struct AdapterControlBlock *acb)
255 {
256 switch (acb->adapter_type) {
257 case ACB_ADAPTER_TYPE_A:{
258 iounmap(acb->pmuA);
259 }
260 break;
261 case ACB_ADAPTER_TYPE_B:{
262 iounmap(acb->mem_base0);
263 iounmap(acb->mem_base1);
264 }
265
266 break;
267 case ACB_ADAPTER_TYPE_C:{
268 iounmap(acb->pmuC);
269 }
270 }
271 }
272
273 static irqreturn_t arcmsr_do_interrupt(int irq, void *dev_id)
274 {
275 irqreturn_t handle_state;
276 struct AdapterControlBlock *acb = dev_id;
277
278 handle_state = arcmsr_interrupt(acb);
279 return handle_state;
280 }
281
282 static int arcmsr_bios_param(struct scsi_device *sdev,
283 struct block_device *bdev, sector_t capacity, int *geom)
284 {
285 int ret, heads, sectors, cylinders, total_capacity;
286 unsigned char *buffer;/* return copy of block device's partition table */
287
288 buffer = scsi_bios_ptable(bdev);
289 if (buffer) {
290 ret = scsi_partsize(buffer, capacity, &geom[2], &geom[0], &geom[1]);
291 kfree(buffer);
292 if (ret != -1)
293 return ret;
294 }
295 total_capacity = capacity;
296 heads = 64;
297 sectors = 32;
298 cylinders = total_capacity / (heads * sectors);
299 if (cylinders > 1024) {
300 heads = 255;
301 sectors = 63;
302 cylinders = total_capacity / (heads * sectors);
303 }
304 geom[0] = heads;
305 geom[1] = sectors;
306 geom[2] = cylinders;
307 return 0;
308 }
309
310 static void arcmsr_define_adapter_type(struct AdapterControlBlock *acb)
311 {
312 struct pci_dev *pdev = acb->pdev;
313 u16 dev_id;
314 pci_read_config_word(pdev, PCI_DEVICE_ID, &dev_id);
315 acb->dev_id = dev_id;
316 switch (dev_id) {
317 case 0x1880: {
318 acb->adapter_type = ACB_ADAPTER_TYPE_C;
319 }
320 break;
321 case 0x1201: {
322 acb->adapter_type = ACB_ADAPTER_TYPE_B;
323 }
324 break;
325
326 default: acb->adapter_type = ACB_ADAPTER_TYPE_A;
327 }
328 }
329
330 static uint8_t arcmsr_hba_wait_msgint_ready(struct AdapterControlBlock *acb)
331 {
332 struct MessageUnit_A __iomem *reg = acb->pmuA;
333 uint32_t Index;
334 uint8_t Retries = 0x00;
335 do {
336 for (Index = 0; Index < 100; Index++) {
337 if (readl(&reg->outbound_intstatus) &
338 ARCMSR_MU_OUTBOUND_MESSAGE0_INT) {
339 writel(ARCMSR_MU_OUTBOUND_MESSAGE0_INT,
340 &reg->outbound_intstatus);
341 return true;
342 }
343 msleep(10);
344 }/*max 1 seconds*/
345
346 } while (Retries++ < 20);/*max 20 sec*/
347 return false;
348 }
349
350 static uint8_t arcmsr_hbb_wait_msgint_ready(struct AdapterControlBlock *acb)
351 {
352 struct MessageUnit_B *reg = acb->pmuB;
353 uint32_t Index;
354 uint8_t Retries = 0x00;
355 do {
356 for (Index = 0; Index < 100; Index++) {
357 if (readl(reg->iop2drv_doorbell)
358 & ARCMSR_IOP2DRV_MESSAGE_CMD_DONE) {
359 writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN
360 , reg->iop2drv_doorbell);
361 writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT, reg->drv2iop_doorbell);
362 return true;
363 }
364 msleep(10);
365 }/*max 1 seconds*/
366
367 } while (Retries++ < 20);/*max 20 sec*/
368 return false;
369 }
370
371 static uint8_t arcmsr_hbc_wait_msgint_ready(struct AdapterControlBlock *pACB)
372 {
373 struct MessageUnit_C *phbcmu = (struct MessageUnit_C *)pACB->pmuC;
374 unsigned char Retries = 0x00;
375 uint32_t Index;
376 do {
377 for (Index = 0; Index < 100; Index++) {
378 if (readl(&phbcmu->outbound_doorbell) & ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE) {
379 writel(ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE_DOORBELL_CLEAR, &phbcmu->outbound_doorbell_clear);/*clear interrupt*/
380 return true;
381 }
382 /* one us delay */
383 msleep(10);
384 } /*max 1 seconds*/
385 } while (Retries++ < 20); /*max 20 sec*/
386 return false;
387 }
388 static void arcmsr_flush_hba_cache(struct AdapterControlBlock *acb)
389 {
390 struct MessageUnit_A __iomem *reg = acb->pmuA;
391 int retry_count = 30;
392 writel(ARCMSR_INBOUND_MESG0_FLUSH_CACHE, &reg->inbound_msgaddr0);
393 do {
394 if (arcmsr_hba_wait_msgint_ready(acb))
395 break;
396 else {
397 retry_count--;
398 printk(KERN_NOTICE "arcmsr%d: wait 'flush adapter cache' \
399 timeout, retry count down = %d \n", acb->host->host_no, retry_count);
400 }
401 } while (retry_count != 0);
402 }
403
404 static void arcmsr_flush_hbb_cache(struct AdapterControlBlock *acb)
405 {
406 struct MessageUnit_B *reg = acb->pmuB;
407 int retry_count = 30;
408 writel(ARCMSR_MESSAGE_FLUSH_CACHE, reg->drv2iop_doorbell);
409 do {
410 if (arcmsr_hbb_wait_msgint_ready(acb))
411 break;
412 else {
413 retry_count--;
414 printk(KERN_NOTICE "arcmsr%d: wait 'flush adapter cache' \
415 timeout,retry count down = %d \n", acb->host->host_no, retry_count);
416 }
417 } while (retry_count != 0);
418 }
419
420 static void arcmsr_flush_hbc_cache(struct AdapterControlBlock *pACB)
421 {
422 struct MessageUnit_C *reg = (struct MessageUnit_C *)pACB->pmuC;
423 int retry_count = 30;/* enlarge wait flush adapter cache time: 10 minute */
424 writel(ARCMSR_INBOUND_MESG0_FLUSH_CACHE, &reg->inbound_msgaddr0);
425 writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
426 do {
427 if (arcmsr_hbc_wait_msgint_ready(pACB)) {
428 break;
429 } else {
430 retry_count--;
431 printk(KERN_NOTICE "arcmsr%d: wait 'flush adapter cache' \
432 timeout,retry count down = %d \n", pACB->host->host_no, retry_count);
433 }
434 } while (retry_count != 0);
435 return;
436 }
437 static void arcmsr_flush_adapter_cache(struct AdapterControlBlock *acb)
438 {
439 switch (acb->adapter_type) {
440
441 case ACB_ADAPTER_TYPE_A: {
442 arcmsr_flush_hba_cache(acb);
443 }
444 break;
445
446 case ACB_ADAPTER_TYPE_B: {
447 arcmsr_flush_hbb_cache(acb);
448 }
449 break;
450 case ACB_ADAPTER_TYPE_C: {
451 arcmsr_flush_hbc_cache(acb);
452 }
453 }
454 }
455
456 static int arcmsr_alloc_ccb_pool(struct AdapterControlBlock *acb)
457 {
458 struct pci_dev *pdev = acb->pdev;
459 void *dma_coherent;
460 dma_addr_t dma_coherent_handle;
461 struct CommandControlBlock *ccb_tmp;
462 int i = 0, j = 0;
463 dma_addr_t cdb_phyaddr;
464 unsigned long roundup_ccbsize = 0, offset;
465 unsigned long max_xfer_len;
466 unsigned long max_sg_entrys;
467 uint32_t firm_config_version;
468 for (i = 0; i < ARCMSR_MAX_TARGETID; i++)
469 for (j = 0; j < ARCMSR_MAX_TARGETLUN; j++)
470 acb->devstate[i][j] = ARECA_RAID_GONE;
471
472 max_xfer_len = ARCMSR_MAX_XFER_LEN;
473 max_sg_entrys = ARCMSR_DEFAULT_SG_ENTRIES;
474 firm_config_version = acb->firm_cfg_version;
475 if((firm_config_version & 0xFF) >= 3){
476 max_xfer_len = (ARCMSR_CDB_SG_PAGE_LENGTH << ((firm_config_version >> 8) & 0xFF)) * 1024;/* max 4M byte */
477 max_sg_entrys = (max_xfer_len/4096);
478 }
479 acb->host->max_sectors = max_xfer_len/512;
480 acb->host->sg_tablesize = max_sg_entrys;
481 roundup_ccbsize = roundup(sizeof(struct CommandControlBlock) + (max_sg_entrys - 1) * sizeof(struct SG64ENTRY), 32);
482 acb->uncache_size = roundup_ccbsize * ARCMSR_MAX_FREECCB_NUM + 32;
483 dma_coherent = dma_alloc_coherent(&pdev->dev, acb->uncache_size, &dma_coherent_handle, GFP_KERNEL);
484 if(!dma_coherent){
485 printk(KERN_NOTICE "arcmsr%d: dma_alloc_coherent got error \n", acb->host->host_no);
486 return -ENOMEM;
487 }
488 acb->dma_coherent = dma_coherent;
489 acb->dma_coherent_handle = dma_coherent_handle;
490 memset(dma_coherent, 0, acb->uncache_size);
491 offset = roundup((unsigned long)dma_coherent, 32) - (unsigned long)dma_coherent;
492 dma_coherent_handle = dma_coherent_handle + offset;
493 dma_coherent = (struct CommandControlBlock *)dma_coherent + offset;
494 ccb_tmp = dma_coherent;
495 acb->vir2phy_offset = (unsigned long)dma_coherent - (unsigned long)dma_coherent_handle;
496 for(i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++){
497 cdb_phyaddr = dma_coherent_handle + offsetof(struct CommandControlBlock, arcmsr_cdb);
498 ccb_tmp->cdb_phyaddr_pattern = ((acb->adapter_type == ACB_ADAPTER_TYPE_C) ? cdb_phyaddr : (cdb_phyaddr >> 5));
499 acb->pccb_pool[i] = ccb_tmp;
500 ccb_tmp->acb = acb;
501 INIT_LIST_HEAD(&ccb_tmp->list);
502 list_add_tail(&ccb_tmp->list, &acb->ccb_free_list);
503 ccb_tmp = (struct CommandControlBlock *)((unsigned long)ccb_tmp + roundup_ccbsize);
504 dma_coherent_handle = dma_coherent_handle + roundup_ccbsize;
505 }
506 return 0;
507 }
508
509 static void arcmsr_message_isr_bh_fn(struct work_struct *work)
510 {
511 struct AdapterControlBlock *acb = container_of(work,struct AdapterControlBlock, arcmsr_do_message_isr_bh);
512 switch (acb->adapter_type) {
513 case ACB_ADAPTER_TYPE_A: {
514
515 struct MessageUnit_A __iomem *reg = acb->pmuA;
516 char *acb_dev_map = (char *)acb->device_map;
517 uint32_t __iomem *signature = (uint32_t __iomem*) (&reg->message_rwbuffer[0]);
518 char __iomem *devicemap = (char __iomem*) (&reg->message_rwbuffer[21]);
519 int target, lun;
520 struct scsi_device *psdev;
521 char diff;
522
523 atomic_inc(&acb->rq_map_token);
524 if (readl(signature) == ARCMSR_SIGNATURE_GET_CONFIG) {
525 for(target = 0; target < ARCMSR_MAX_TARGETID -1; target++) {
526 diff = (*acb_dev_map)^readb(devicemap);
527 if (diff != 0) {
528 char temp;
529 *acb_dev_map = readb(devicemap);
530 temp =*acb_dev_map;
531 for(lun = 0; lun < ARCMSR_MAX_TARGETLUN; lun++) {
532 if((temp & 0x01)==1 && (diff & 0x01) == 1) {
533 scsi_add_device(acb->host, 0, target, lun);
534 }else if((temp & 0x01) == 0 && (diff & 0x01) == 1) {
535 psdev = scsi_device_lookup(acb->host, 0, target, lun);
536 if (psdev != NULL ) {
537 scsi_remove_device(psdev);
538 scsi_device_put(psdev);
539 }
540 }
541 temp >>= 1;
542 diff >>= 1;
543 }
544 }
545 devicemap++;
546 acb_dev_map++;
547 }
548 }
549 break;
550 }
551
552 case ACB_ADAPTER_TYPE_B: {
553 struct MessageUnit_B *reg = acb->pmuB;
554 char *acb_dev_map = (char *)acb->device_map;
555 uint32_t __iomem *signature = (uint32_t __iomem*)(&reg->message_rwbuffer[0]);
556 char __iomem *devicemap = (char __iomem*)(&reg->message_rwbuffer[21]);
557 int target, lun;
558 struct scsi_device *psdev;
559 char diff;
560
561 atomic_inc(&acb->rq_map_token);
562 if (readl(signature) == ARCMSR_SIGNATURE_GET_CONFIG) {
563 for(target = 0; target < ARCMSR_MAX_TARGETID -1; target++) {
564 diff = (*acb_dev_map)^readb(devicemap);
565 if (diff != 0) {
566 char temp;
567 *acb_dev_map = readb(devicemap);
568 temp =*acb_dev_map;
569 for(lun = 0; lun < ARCMSR_MAX_TARGETLUN; lun++) {
570 if((temp & 0x01)==1 && (diff & 0x01) == 1) {
571 scsi_add_device(acb->host, 0, target, lun);
572 }else if((temp & 0x01) == 0 && (diff & 0x01) == 1) {
573 psdev = scsi_device_lookup(acb->host, 0, target, lun);
574 if (psdev != NULL ) {
575 scsi_remove_device(psdev);
576 scsi_device_put(psdev);
577 }
578 }
579 temp >>= 1;
580 diff >>= 1;
581 }
582 }
583 devicemap++;
584 acb_dev_map++;
585 }
586 }
587 }
588 break;
589 case ACB_ADAPTER_TYPE_C: {
590 struct MessageUnit_C *reg = acb->pmuC;
591 char *acb_dev_map = (char *)acb->device_map;
592 uint32_t __iomem *signature = (uint32_t __iomem *)(&reg->msgcode_rwbuffer[0]);
593 char __iomem *devicemap = (char __iomem *)(&reg->msgcode_rwbuffer[21]);
594 int target, lun;
595 struct scsi_device *psdev;
596 char diff;
597
598 atomic_inc(&acb->rq_map_token);
599 if (readl(signature) == ARCMSR_SIGNATURE_GET_CONFIG) {
600 for (target = 0; target < ARCMSR_MAX_TARGETID - 1; target++) {
601 diff = (*acb_dev_map)^readb(devicemap);
602 if (diff != 0) {
603 char temp;
604 *acb_dev_map = readb(devicemap);
605 temp = *acb_dev_map;
606 for (lun = 0; lun < ARCMSR_MAX_TARGETLUN; lun++) {
607 if ((temp & 0x01) == 1 && (diff & 0x01) == 1) {
608 scsi_add_device(acb->host, 0, target, lun);
609 } else if ((temp & 0x01) == 0 && (diff & 0x01) == 1) {
610 psdev = scsi_device_lookup(acb->host, 0, target, lun);
611 if (psdev != NULL) {
612 scsi_remove_device(psdev);
613 scsi_device_put(psdev);
614 }
615 }
616 temp >>= 1;
617 diff >>= 1;
618 }
619 }
620 devicemap++;
621 acb_dev_map++;
622 }
623 }
624 }
625 }
626 }
627
628 static int arcmsr_probe(struct pci_dev *pdev, const struct pci_device_id *id)
629 {
630 struct Scsi_Host *host;
631 struct AdapterControlBlock *acb;
632 uint8_t bus,dev_fun;
633 int error;
634 error = pci_enable_device(pdev);
635 if(error){
636 return -ENODEV;
637 }
638 host = scsi_host_alloc(&arcmsr_scsi_host_template, sizeof(struct AdapterControlBlock));
639 if(!host){
640 goto pci_disable_dev;
641 }
642 error = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
643 if(error){
644 error = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
645 if(error){
646 printk(KERN_WARNING
647 "scsi%d: No suitable DMA mask available\n",
648 host->host_no);
649 goto scsi_host_release;
650 }
651 }
652 init_waitqueue_head(&wait_q);
653 bus = pdev->bus->number;
654 dev_fun = pdev->devfn;
655 acb = (struct AdapterControlBlock *) host->hostdata;
656 memset(acb,0,sizeof(struct AdapterControlBlock));
657 acb->pdev = pdev;
658 acb->host = host;
659 host->max_lun = ARCMSR_MAX_TARGETLUN;
660 host->max_id = ARCMSR_MAX_TARGETID; /*16:8*/
661 host->max_cmd_len = 16; /*this is issue of 64bit LBA ,over 2T byte*/
662 host->can_queue = ARCMSR_MAX_FREECCB_NUM; /* max simultaneous cmds */
663 host->cmd_per_lun = ARCMSR_MAX_CMD_PERLUN;
664 host->this_id = ARCMSR_SCSI_INITIATOR_ID;
665 host->unique_id = (bus << 8) | dev_fun;
666 pci_set_drvdata(pdev, host);
667 pci_set_master(pdev);
668 error = pci_request_regions(pdev, "arcmsr");
669 if(error){
670 goto scsi_host_release;
671 }
672 spin_lock_init(&acb->eh_lock);
673 spin_lock_init(&acb->ccblist_lock);
674 acb->acb_flags |= (ACB_F_MESSAGE_WQBUFFER_CLEARED |
675 ACB_F_MESSAGE_RQBUFFER_CLEARED |
676 ACB_F_MESSAGE_WQBUFFER_READED);
677 acb->acb_flags &= ~ACB_F_SCSISTOPADAPTER;
678 INIT_LIST_HEAD(&acb->ccb_free_list);
679 arcmsr_define_adapter_type(acb);
680 error = arcmsr_remap_pciregion(acb);
681 if(!error){
682 goto pci_release_regs;
683 }
684 error = arcmsr_get_firmware_spec(acb);
685 if(!error){
686 goto unmap_pci_region;
687 }
688 error = arcmsr_alloc_ccb_pool(acb);
689 if(error){
690 goto free_hbb_mu;
691 }
692 arcmsr_iop_init(acb);
693 error = scsi_add_host(host, &pdev->dev);
694 if(error){
695 goto RAID_controller_stop;
696 }
697 error = request_irq(pdev->irq, arcmsr_do_interrupt, IRQF_SHARED, "arcmsr", acb);
698 if(error){
699 goto scsi_host_remove;
700 }
701 host->irq = pdev->irq;
702 scsi_scan_host(host);
703 INIT_WORK(&acb->arcmsr_do_message_isr_bh, arcmsr_message_isr_bh_fn);
704 atomic_set(&acb->rq_map_token, 16);
705 atomic_set(&acb->ante_token_value, 16);
706 acb->fw_flag = FW_NORMAL;
707 init_timer(&acb->eternal_timer);
708 acb->eternal_timer.expires = jiffies + msecs_to_jiffies(6 * HZ);
709 acb->eternal_timer.data = (unsigned long) acb;
710 acb->eternal_timer.function = &arcmsr_request_device_map;
711 add_timer(&acb->eternal_timer);
712 if(arcmsr_alloc_sysfs_attr(acb))
713 goto out_free_sysfs;
714 return 0;
715 out_free_sysfs:
716 scsi_host_remove:
717 scsi_remove_host(host);
718 RAID_controller_stop:
719 arcmsr_stop_adapter_bgrb(acb);
720 arcmsr_flush_adapter_cache(acb);
721 arcmsr_free_ccb_pool(acb);
722 free_hbb_mu:
723 arcmsr_free_hbb_mu(acb);
724 unmap_pci_region:
725 arcmsr_unmap_pciregion(acb);
726 pci_release_regs:
727 pci_release_regions(pdev);
728 scsi_host_release:
729 scsi_host_put(host);
730 pci_disable_dev:
731 pci_disable_device(pdev);
732 return -ENODEV;
733 }
734
735 static uint8_t arcmsr_abort_hba_allcmd(struct AdapterControlBlock *acb)
736 {
737 struct MessageUnit_A __iomem *reg = acb->pmuA;
738 writel(ARCMSR_INBOUND_MESG0_ABORT_CMD, &reg->inbound_msgaddr0);
739 if (!arcmsr_hba_wait_msgint_ready(acb)) {
740 printk(KERN_NOTICE
741 "arcmsr%d: wait 'abort all outstanding command' timeout \n"
742 , acb->host->host_no);
743 return false;
744 }
745 return true;
746 }
747
748 static uint8_t arcmsr_abort_hbb_allcmd(struct AdapterControlBlock *acb)
749 {
750 struct MessageUnit_B *reg = acb->pmuB;
751
752 writel(ARCMSR_MESSAGE_ABORT_CMD, reg->drv2iop_doorbell);
753 if (!arcmsr_hbb_wait_msgint_ready(acb)) {
754 printk(KERN_NOTICE
755 "arcmsr%d: wait 'abort all outstanding command' timeout \n"
756 , acb->host->host_no);
757 return false;
758 }
759 return true;
760 }
761 static uint8_t arcmsr_abort_hbc_allcmd(struct AdapterControlBlock *pACB)
762 {
763 struct MessageUnit_C *reg = (struct MessageUnit_C *)pACB->pmuC;
764 writel(ARCMSR_INBOUND_MESG0_ABORT_CMD, &reg->inbound_msgaddr0);
765 writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
766 if (!arcmsr_hbc_wait_msgint_ready(pACB)) {
767 printk(KERN_NOTICE
768 "arcmsr%d: wait 'abort all outstanding command' timeout \n"
769 , pACB->host->host_no);
770 return false;
771 }
772 return true;
773 }
774 static uint8_t arcmsr_abort_allcmd(struct AdapterControlBlock *acb)
775 {
776 uint8_t rtnval = 0;
777 switch (acb->adapter_type) {
778 case ACB_ADAPTER_TYPE_A: {
779 rtnval = arcmsr_abort_hba_allcmd(acb);
780 }
781 break;
782
783 case ACB_ADAPTER_TYPE_B: {
784 rtnval = arcmsr_abort_hbb_allcmd(acb);
785 }
786 break;
787
788 case ACB_ADAPTER_TYPE_C: {
789 rtnval = arcmsr_abort_hbc_allcmd(acb);
790 }
791 }
792 return rtnval;
793 }
794
795 static bool arcmsr_hbb_enable_driver_mode(struct AdapterControlBlock *pacb)
796 {
797 struct MessageUnit_B *reg = pacb->pmuB;
798 writel(ARCMSR_MESSAGE_START_DRIVER_MODE, reg->drv2iop_doorbell);
799 if (!arcmsr_hbb_wait_msgint_ready(pacb)) {
800 printk(KERN_ERR "arcmsr%d: can't set driver mode. \n", pacb->host->host_no);
801 return false;
802 }
803 return true;
804 }
805
806 static void arcmsr_pci_unmap_dma(struct CommandControlBlock *ccb)
807 {
808 struct scsi_cmnd *pcmd = ccb->pcmd;
809
810 scsi_dma_unmap(pcmd);
811 }
812
813 static void arcmsr_ccb_complete(struct CommandControlBlock *ccb)
814 {
815 struct AdapterControlBlock *acb = ccb->acb;
816 struct scsi_cmnd *pcmd = ccb->pcmd;
817 unsigned long flags;
818 atomic_dec(&acb->ccboutstandingcount);
819 arcmsr_pci_unmap_dma(ccb);
820 ccb->startdone = ARCMSR_CCB_DONE;
821 spin_lock_irqsave(&acb->ccblist_lock, flags);
822 list_add_tail(&ccb->list, &acb->ccb_free_list);
823 spin_unlock_irqrestore(&acb->ccblist_lock, flags);
824 pcmd->scsi_done(pcmd);
825 }
826
827 static void arcmsr_report_sense_info(struct CommandControlBlock *ccb)
828 {
829
830 struct scsi_cmnd *pcmd = ccb->pcmd;
831 struct SENSE_DATA *sensebuffer = (struct SENSE_DATA *)pcmd->sense_buffer;
832 pcmd->result = DID_OK << 16;
833 if (sensebuffer) {
834 int sense_data_length =
835 sizeof(struct SENSE_DATA) < SCSI_SENSE_BUFFERSIZE
836 ? sizeof(struct SENSE_DATA) : SCSI_SENSE_BUFFERSIZE;
837 memset(sensebuffer, 0, SCSI_SENSE_BUFFERSIZE);
838 memcpy(sensebuffer, ccb->arcmsr_cdb.SenseData, sense_data_length);
839 sensebuffer->ErrorCode = SCSI_SENSE_CURRENT_ERRORS;
840 sensebuffer->Valid = 1;
841 }
842 }
843
844 static u32 arcmsr_disable_outbound_ints(struct AdapterControlBlock *acb)
845 {
846 u32 orig_mask = 0;
847 switch (acb->adapter_type) {
848 case ACB_ADAPTER_TYPE_A : {
849 struct MessageUnit_A __iomem *reg = acb->pmuA;
850 orig_mask = readl(&reg->outbound_intmask);
851 writel(orig_mask|ARCMSR_MU_OUTBOUND_ALL_INTMASKENABLE, \
852 &reg->outbound_intmask);
853 }
854 break;
855 case ACB_ADAPTER_TYPE_B : {
856 struct MessageUnit_B *reg = acb->pmuB;
857 orig_mask = readl(reg->iop2drv_doorbell_mask);
858 writel(0, reg->iop2drv_doorbell_mask);
859 }
860 break;
861 case ACB_ADAPTER_TYPE_C:{
862 struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
863 /* disable all outbound interrupt */
864 orig_mask = readl(&reg->host_int_mask); /* disable outbound message0 int */
865 writel(orig_mask|ARCMSR_HBCMU_ALL_INTMASKENABLE, &reg->host_int_mask);
866 }
867 break;
868 }
869 return orig_mask;
870 }
871
872 static void arcmsr_report_ccb_state(struct AdapterControlBlock *acb,
873 struct CommandControlBlock *ccb, bool error)
874 {
875 uint8_t id, lun;
876 id = ccb->pcmd->device->id;
877 lun = ccb->pcmd->device->lun;
878 if (!error) {
879 if (acb->devstate[id][lun] == ARECA_RAID_GONE)
880 acb->devstate[id][lun] = ARECA_RAID_GOOD;
881 ccb->pcmd->result = DID_OK << 16;
882 arcmsr_ccb_complete(ccb);
883 }else{
884 switch (ccb->arcmsr_cdb.DeviceStatus) {
885 case ARCMSR_DEV_SELECT_TIMEOUT: {
886 acb->devstate[id][lun] = ARECA_RAID_GONE;
887 ccb->pcmd->result = DID_NO_CONNECT << 16;
888 arcmsr_ccb_complete(ccb);
889 }
890 break;
891
892 case ARCMSR_DEV_ABORTED:
893
894 case ARCMSR_DEV_INIT_FAIL: {
895 acb->devstate[id][lun] = ARECA_RAID_GONE;
896 ccb->pcmd->result = DID_BAD_TARGET << 16;
897 arcmsr_ccb_complete(ccb);
898 }
899 break;
900
901 case ARCMSR_DEV_CHECK_CONDITION: {
902 acb->devstate[id][lun] = ARECA_RAID_GOOD;
903 arcmsr_report_sense_info(ccb);
904 arcmsr_ccb_complete(ccb);
905 }
906 break;
907
908 default:
909 printk(KERN_NOTICE
910 "arcmsr%d: scsi id = %d lun = %d isr get command error done, \
911 but got unknown DeviceStatus = 0x%x \n"
912 , acb->host->host_no
913 , id
914 , lun
915 , ccb->arcmsr_cdb.DeviceStatus);
916 acb->devstate[id][lun] = ARECA_RAID_GONE;
917 ccb->pcmd->result = DID_NO_CONNECT << 16;
918 arcmsr_ccb_complete(ccb);
919 break;
920 }
921 }
922 }
923
924 static void arcmsr_drain_donequeue(struct AdapterControlBlock *acb, struct CommandControlBlock *pCCB, bool error)
925
926 {
927 int id, lun;
928 if ((pCCB->acb != acb) || (pCCB->startdone != ARCMSR_CCB_START)) {
929 if (pCCB->startdone == ARCMSR_CCB_ABORTED) {
930 struct scsi_cmnd *abortcmd = pCCB->pcmd;
931 if (abortcmd) {
932 id = abortcmd->device->id;
933 lun = abortcmd->device->lun;
934 abortcmd->result |= DID_ABORT << 16;
935 arcmsr_ccb_complete(pCCB);
936 printk(KERN_NOTICE "arcmsr%d: pCCB ='0x%p' isr got aborted command \n",
937 acb->host->host_no, pCCB);
938 }
939 return;
940 }
941 printk(KERN_NOTICE "arcmsr%d: isr get an illegal ccb command \
942 done acb = '0x%p'"
943 "ccb = '0x%p' ccbacb = '0x%p' startdone = 0x%x"
944 " ccboutstandingcount = %d \n"
945 , acb->host->host_no
946 , acb
947 , pCCB
948 , pCCB->acb
949 , pCCB->startdone
950 , atomic_read(&acb->ccboutstandingcount));
951 return;
952 }
953 arcmsr_report_ccb_state(acb, pCCB, error);
954 }
955
956 static void arcmsr_done4abort_postqueue(struct AdapterControlBlock *acb)
957 {
958 int i = 0;
959 uint32_t flag_ccb;
960 struct ARCMSR_CDB *pARCMSR_CDB;
961 bool error;
962 struct CommandControlBlock *pCCB;
963 switch (acb->adapter_type) {
964
965 case ACB_ADAPTER_TYPE_A: {
966 struct MessageUnit_A __iomem *reg = acb->pmuA;
967 uint32_t outbound_intstatus;
968 outbound_intstatus = readl(&reg->outbound_intstatus) &
969 acb->outbound_int_enable;
970 /*clear and abort all outbound posted Q*/
971 writel(outbound_intstatus, &reg->outbound_intstatus);/*clear interrupt*/
972 while(((flag_ccb = readl(&reg->outbound_queueport)) != 0xFFFFFFFF)
973 && (i++ < ARCMSR_MAX_OUTSTANDING_CMD)) {
974 pARCMSR_CDB = (struct ARCMSR_CDB *)(acb->vir2phy_offset + (flag_ccb << 5));/*frame must be 32 bytes aligned*/
975 pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
976 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
977 arcmsr_drain_donequeue(acb, pCCB, error);
978 }
979 }
980 break;
981
982 case ACB_ADAPTER_TYPE_B: {
983 struct MessageUnit_B *reg = acb->pmuB;
984 /*clear all outbound posted Q*/
985 writel(ARCMSR_DOORBELL_INT_CLEAR_PATTERN, &reg->iop2drv_doorbell); /* clear doorbell interrupt */
986 for (i = 0; i < ARCMSR_MAX_HBB_POSTQUEUE; i++) {
987 if ((flag_ccb = readl(&reg->done_qbuffer[i])) != 0) {
988 writel(0, &reg->done_qbuffer[i]);
989 pARCMSR_CDB = (struct ARCMSR_CDB *)(acb->vir2phy_offset+(flag_ccb << 5));/*frame must be 32 bytes aligned*/
990 pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
991 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
992 arcmsr_drain_donequeue(acb, pCCB, error);
993 }
994 reg->post_qbuffer[i] = 0;
995 }
996 reg->doneq_index = 0;
997 reg->postq_index = 0;
998 }
999 break;
1000 case ACB_ADAPTER_TYPE_C: {
1001 struct MessageUnit_C *reg = acb->pmuC;
1002 struct ARCMSR_CDB *pARCMSR_CDB;
1003 uint32_t flag_ccb, ccb_cdb_phy;
1004 bool error;
1005 struct CommandControlBlock *pCCB;
1006 while ((readl(&reg->host_int_status) & ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR) && (i++ < ARCMSR_MAX_OUTSTANDING_CMD)) {
1007 /*need to do*/
1008 flag_ccb = readl(&reg->outbound_queueport_low);
1009 ccb_cdb_phy = (flag_ccb & 0xFFFFFFF0);
1010 pARCMSR_CDB = (struct ARCMSR_CDB *)(acb->vir2phy_offset+ccb_cdb_phy);/*frame must be 32 bytes aligned*/
1011 pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
1012 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE1) ? true : false;
1013 arcmsr_drain_donequeue(acb, pCCB, error);
1014 }
1015 }
1016 }
1017 }
1018 static void arcmsr_remove(struct pci_dev *pdev)
1019 {
1020 struct Scsi_Host *host = pci_get_drvdata(pdev);
1021 struct AdapterControlBlock *acb =
1022 (struct AdapterControlBlock *) host->hostdata;
1023 int poll_count = 0;
1024 arcmsr_free_sysfs_attr(acb);
1025 scsi_remove_host(host);
1026 flush_scheduled_work();
1027 del_timer_sync(&acb->eternal_timer);
1028 arcmsr_disable_outbound_ints(acb);
1029 arcmsr_stop_adapter_bgrb(acb);
1030 arcmsr_flush_adapter_cache(acb);
1031 acb->acb_flags |= ACB_F_SCSISTOPADAPTER;
1032 acb->acb_flags &= ~ACB_F_IOP_INITED;
1033
1034 for (poll_count = 0; poll_count < ARCMSR_MAX_OUTSTANDING_CMD; poll_count++){
1035 if (!atomic_read(&acb->ccboutstandingcount))
1036 break;
1037 arcmsr_interrupt(acb);/* FIXME: need spinlock */
1038 msleep(25);
1039 }
1040
1041 if (atomic_read(&acb->ccboutstandingcount)) {
1042 int i;
1043
1044 arcmsr_abort_allcmd(acb);
1045 arcmsr_done4abort_postqueue(acb);
1046 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
1047 struct CommandControlBlock *ccb = acb->pccb_pool[i];
1048 if (ccb->startdone == ARCMSR_CCB_START) {
1049 ccb->startdone = ARCMSR_CCB_ABORTED;
1050 ccb->pcmd->result = DID_ABORT << 16;
1051 arcmsr_ccb_complete(ccb);
1052 }
1053 }
1054 }
1055 free_irq(pdev->irq, acb);
1056 arcmsr_free_ccb_pool(acb);
1057 arcmsr_free_hbb_mu(acb);
1058 arcmsr_unmap_pciregion(acb);
1059 pci_release_regions(pdev);
1060 scsi_host_put(host);
1061 pci_disable_device(pdev);
1062 pci_set_drvdata(pdev, NULL);
1063 }
1064
1065 static void arcmsr_shutdown(struct pci_dev *pdev)
1066 {
1067 struct Scsi_Host *host = pci_get_drvdata(pdev);
1068 struct AdapterControlBlock *acb =
1069 (struct AdapterControlBlock *)host->hostdata;
1070 del_timer_sync(&acb->eternal_timer);
1071 arcmsr_disable_outbound_ints(acb);
1072 flush_scheduled_work();
1073 arcmsr_stop_adapter_bgrb(acb);
1074 arcmsr_flush_adapter_cache(acb);
1075 }
1076
1077 static int arcmsr_module_init(void)
1078 {
1079 int error = 0;
1080 error = pci_register_driver(&arcmsr_pci_driver);
1081 return error;
1082 }
1083
1084 static void arcmsr_module_exit(void)
1085 {
1086 pci_unregister_driver(&arcmsr_pci_driver);
1087 }
1088 module_init(arcmsr_module_init);
1089 module_exit(arcmsr_module_exit);
1090
1091 static void arcmsr_enable_outbound_ints(struct AdapterControlBlock *acb,
1092 u32 intmask_org)
1093 {
1094 u32 mask;
1095 switch (acb->adapter_type) {
1096
1097 case ACB_ADAPTER_TYPE_A: {
1098 struct MessageUnit_A __iomem *reg = acb->pmuA;
1099 mask = intmask_org & ~(ARCMSR_MU_OUTBOUND_POSTQUEUE_INTMASKENABLE |
1100 ARCMSR_MU_OUTBOUND_DOORBELL_INTMASKENABLE|
1101 ARCMSR_MU_OUTBOUND_MESSAGE0_INTMASKENABLE);
1102 writel(mask, &reg->outbound_intmask);
1103 acb->outbound_int_enable = ~(intmask_org & mask) & 0x000000ff;
1104 }
1105 break;
1106
1107 case ACB_ADAPTER_TYPE_B: {
1108 struct MessageUnit_B *reg = acb->pmuB;
1109 mask = intmask_org | (ARCMSR_IOP2DRV_DATA_WRITE_OK |
1110 ARCMSR_IOP2DRV_DATA_READ_OK |
1111 ARCMSR_IOP2DRV_CDB_DONE |
1112 ARCMSR_IOP2DRV_MESSAGE_CMD_DONE);
1113 writel(mask, reg->iop2drv_doorbell_mask);
1114 acb->outbound_int_enable = (intmask_org | mask) & 0x0000000f;
1115 }
1116 break;
1117 case ACB_ADAPTER_TYPE_C: {
1118 struct MessageUnit_C *reg = acb->pmuC;
1119 mask = ~(ARCMSR_HBCMU_UTILITY_A_ISR_MASK | ARCMSR_HBCMU_OUTBOUND_DOORBELL_ISR_MASK|ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR_MASK);
1120 writel(intmask_org & mask, &reg->host_int_mask);
1121 acb->outbound_int_enable = ~(intmask_org & mask) & 0x0000000f;
1122 }
1123 }
1124 }
1125
1126 static int arcmsr_build_ccb(struct AdapterControlBlock *acb,
1127 struct CommandControlBlock *ccb, struct scsi_cmnd *pcmd)
1128 {
1129 struct ARCMSR_CDB *arcmsr_cdb = (struct ARCMSR_CDB *)&ccb->arcmsr_cdb;
1130 int8_t *psge = (int8_t *)&arcmsr_cdb->u;
1131 __le32 address_lo, address_hi;
1132 int arccdbsize = 0x30;
1133 __le32 length = 0;
1134 int i;
1135 struct scatterlist *sg;
1136 int nseg;
1137 ccb->pcmd = pcmd;
1138 memset(arcmsr_cdb, 0, sizeof(struct ARCMSR_CDB));
1139 arcmsr_cdb->TargetID = pcmd->device->id;
1140 arcmsr_cdb->LUN = pcmd->device->lun;
1141 arcmsr_cdb->Function = 1;
1142 arcmsr_cdb->Context = 0;
1143 memcpy(arcmsr_cdb->Cdb, pcmd->cmnd, pcmd->cmd_len);
1144
1145 nseg = scsi_dma_map(pcmd);
1146 if (unlikely(nseg > acb->host->sg_tablesize || nseg < 0))
1147 return FAILED;
1148 scsi_for_each_sg(pcmd, sg, nseg, i) {
1149 /* Get the physical address of the current data pointer */
1150 length = cpu_to_le32(sg_dma_len(sg));
1151 address_lo = cpu_to_le32(dma_addr_lo32(sg_dma_address(sg)));
1152 address_hi = cpu_to_le32(dma_addr_hi32(sg_dma_address(sg)));
1153 if (address_hi == 0) {
1154 struct SG32ENTRY *pdma_sg = (struct SG32ENTRY *)psge;
1155
1156 pdma_sg->address = address_lo;
1157 pdma_sg->length = length;
1158 psge += sizeof (struct SG32ENTRY);
1159 arccdbsize += sizeof (struct SG32ENTRY);
1160 } else {
1161 struct SG64ENTRY *pdma_sg = (struct SG64ENTRY *)psge;
1162
1163 pdma_sg->addresshigh = address_hi;
1164 pdma_sg->address = address_lo;
1165 pdma_sg->length = length|cpu_to_le32(IS_SG64_ADDR);
1166 psge += sizeof (struct SG64ENTRY);
1167 arccdbsize += sizeof (struct SG64ENTRY);
1168 }
1169 }
1170 arcmsr_cdb->sgcount = (uint8_t)nseg;
1171 arcmsr_cdb->DataLength = scsi_bufflen(pcmd);
1172 arcmsr_cdb->msgPages = arccdbsize/0x100 + (arccdbsize % 0x100 ? 1 : 0);
1173 if ( arccdbsize > 256)
1174 arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_SGL_BSIZE;
1175 if (pcmd->cmnd[0]|WRITE_6 || pcmd->cmnd[0]|WRITE_10 || pcmd->cmnd[0]|WRITE_12 ){
1176 arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_WRITE;
1177 }
1178 ccb->arc_cdb_size = arccdbsize;
1179 return SUCCESS;
1180 }
1181
1182 static void arcmsr_post_ccb(struct AdapterControlBlock *acb, struct CommandControlBlock *ccb)
1183 {
1184 uint32_t cdb_phyaddr_pattern = ccb->cdb_phyaddr_pattern;
1185 struct ARCMSR_CDB *arcmsr_cdb = (struct ARCMSR_CDB *)&ccb->arcmsr_cdb;
1186 atomic_inc(&acb->ccboutstandingcount);
1187 ccb->startdone = ARCMSR_CCB_START;
1188 switch (acb->adapter_type) {
1189 case ACB_ADAPTER_TYPE_A: {
1190 struct MessageUnit_A __iomem *reg = acb->pmuA;
1191
1192 if (arcmsr_cdb->Flags & ARCMSR_CDB_FLAG_SGL_BSIZE)
1193 writel(cdb_phyaddr_pattern | ARCMSR_CCBPOST_FLAG_SGL_BSIZE,
1194 &reg->inbound_queueport);
1195 else {
1196 writel(cdb_phyaddr_pattern, &reg->inbound_queueport);
1197 }
1198 }
1199 break;
1200
1201 case ACB_ADAPTER_TYPE_B: {
1202 struct MessageUnit_B *reg = acb->pmuB;
1203 uint32_t ending_index, index = reg->postq_index;
1204
1205 ending_index = ((index + 1) % ARCMSR_MAX_HBB_POSTQUEUE);
1206 writel(0, &reg->post_qbuffer[ending_index]);
1207 if (arcmsr_cdb->Flags & ARCMSR_CDB_FLAG_SGL_BSIZE) {
1208 writel(cdb_phyaddr_pattern | ARCMSR_CCBPOST_FLAG_SGL_BSIZE,\
1209 &reg->post_qbuffer[index]);
1210 } else {
1211 writel(cdb_phyaddr_pattern, &reg->post_qbuffer[index]);
1212 }
1213 index++;
1214 index %= ARCMSR_MAX_HBB_POSTQUEUE;/*if last index number set it to 0 */
1215 reg->postq_index = index;
1216 writel(ARCMSR_DRV2IOP_CDB_POSTED, reg->drv2iop_doorbell);
1217 }
1218 break;
1219 case ACB_ADAPTER_TYPE_C: {
1220 struct MessageUnit_C *phbcmu = (struct MessageUnit_C *)acb->pmuC;
1221 uint32_t ccb_post_stamp, arc_cdb_size;
1222
1223 arc_cdb_size = (ccb->arc_cdb_size > 0x300) ? 0x300 : ccb->arc_cdb_size;
1224 ccb_post_stamp = (cdb_phyaddr_pattern | ((arc_cdb_size - 1) >> 6) | 1);
1225 if (acb->cdb_phyaddr_hi32) {
1226 writel(acb->cdb_phyaddr_hi32, &phbcmu->inbound_queueport_high);
1227 writel(ccb_post_stamp, &phbcmu->inbound_queueport_low);
1228 } else {
1229 writel(ccb_post_stamp, &phbcmu->inbound_queueport_low);
1230 }
1231 }
1232 }
1233 }
1234
1235 static void arcmsr_stop_hba_bgrb(struct AdapterControlBlock *acb)
1236 {
1237 struct MessageUnit_A __iomem *reg = acb->pmuA;
1238 acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
1239 writel(ARCMSR_INBOUND_MESG0_STOP_BGRB, &reg->inbound_msgaddr0);
1240 if (!arcmsr_hba_wait_msgint_ready(acb)) {
1241 printk(KERN_NOTICE
1242 "arcmsr%d: wait 'stop adapter background rebulid' timeout \n"
1243 , acb->host->host_no);
1244 }
1245 }
1246
1247 static void arcmsr_stop_hbb_bgrb(struct AdapterControlBlock *acb)
1248 {
1249 struct MessageUnit_B *reg = acb->pmuB;
1250 acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
1251 writel(ARCMSR_MESSAGE_STOP_BGRB, reg->drv2iop_doorbell);
1252
1253 if (!arcmsr_hbb_wait_msgint_ready(acb)) {
1254 printk(KERN_NOTICE
1255 "arcmsr%d: wait 'stop adapter background rebulid' timeout \n"
1256 , acb->host->host_no);
1257 }
1258 }
1259
1260 static void arcmsr_stop_hbc_bgrb(struct AdapterControlBlock *pACB)
1261 {
1262 struct MessageUnit_C *reg = (struct MessageUnit_C *)pACB->pmuC;
1263 pACB->acb_flags &= ~ACB_F_MSG_START_BGRB;
1264 writel(ARCMSR_INBOUND_MESG0_STOP_BGRB, &reg->inbound_msgaddr0);
1265 writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
1266 if (!arcmsr_hbc_wait_msgint_ready(pACB)) {
1267 printk(KERN_NOTICE
1268 "arcmsr%d: wait 'stop adapter background rebulid' timeout \n"
1269 , pACB->host->host_no);
1270 }
1271 return;
1272 }
1273 static void arcmsr_stop_adapter_bgrb(struct AdapterControlBlock *acb)
1274 {
1275 switch (acb->adapter_type) {
1276 case ACB_ADAPTER_TYPE_A: {
1277 arcmsr_stop_hba_bgrb(acb);
1278 }
1279 break;
1280
1281 case ACB_ADAPTER_TYPE_B: {
1282 arcmsr_stop_hbb_bgrb(acb);
1283 }
1284 break;
1285 case ACB_ADAPTER_TYPE_C: {
1286 arcmsr_stop_hbc_bgrb(acb);
1287 }
1288 }
1289 }
1290
1291 static void arcmsr_free_ccb_pool(struct AdapterControlBlock *acb)
1292 {
1293 dma_free_coherent(&acb->pdev->dev, acb->uncache_size, acb->dma_coherent, acb->dma_coherent_handle);
1294 }
1295
1296 void arcmsr_iop_message_read(struct AdapterControlBlock *acb)
1297 {
1298 switch (acb->adapter_type) {
1299 case ACB_ADAPTER_TYPE_A: {
1300 struct MessageUnit_A __iomem *reg = acb->pmuA;
1301 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, &reg->inbound_doorbell);
1302 }
1303 break;
1304
1305 case ACB_ADAPTER_TYPE_B: {
1306 struct MessageUnit_B *reg = acb->pmuB;
1307 writel(ARCMSR_DRV2IOP_DATA_READ_OK, reg->drv2iop_doorbell);
1308 }
1309 break;
1310 case ACB_ADAPTER_TYPE_C: {
1311 struct MessageUnit_C __iomem *reg = acb->pmuC;
1312 writel(ARCMSR_HBCMU_DRV2IOP_DATA_READ_OK, &reg->inbound_doorbell);
1313 }
1314 }
1315 }
1316
1317 static void arcmsr_iop_message_wrote(struct AdapterControlBlock *acb)
1318 {
1319 switch (acb->adapter_type) {
1320 case ACB_ADAPTER_TYPE_A: {
1321 struct MessageUnit_A __iomem *reg = acb->pmuA;
1322 /*
1323 ** push inbound doorbell tell iop, driver data write ok
1324 ** and wait reply on next hwinterrupt for next Qbuffer post
1325 */
1326 writel(ARCMSR_INBOUND_DRIVER_DATA_WRITE_OK, &reg->inbound_doorbell);
1327 }
1328 break;
1329
1330 case ACB_ADAPTER_TYPE_B: {
1331 struct MessageUnit_B *reg = acb->pmuB;
1332 /*
1333 ** push inbound doorbell tell iop, driver data write ok
1334 ** and wait reply on next hwinterrupt for next Qbuffer post
1335 */
1336 writel(ARCMSR_DRV2IOP_DATA_WRITE_OK, reg->drv2iop_doorbell);
1337 }
1338 break;
1339 case ACB_ADAPTER_TYPE_C: {
1340 struct MessageUnit_C __iomem *reg = acb->pmuC;
1341 /*
1342 ** push inbound doorbell tell iop, driver data write ok
1343 ** and wait reply on next hwinterrupt for next Qbuffer post
1344 */
1345 writel(ARCMSR_HBCMU_DRV2IOP_DATA_WRITE_OK, &reg->inbound_doorbell);
1346 }
1347 break;
1348 }
1349 }
1350
1351 struct QBUFFER __iomem *arcmsr_get_iop_rqbuffer(struct AdapterControlBlock *acb)
1352 {
1353 struct QBUFFER __iomem *qbuffer = NULL;
1354 switch (acb->adapter_type) {
1355
1356 case ACB_ADAPTER_TYPE_A: {
1357 struct MessageUnit_A __iomem *reg = acb->pmuA;
1358 qbuffer = (struct QBUFFER __iomem *)&reg->message_rbuffer;
1359 }
1360 break;
1361
1362 case ACB_ADAPTER_TYPE_B: {
1363 struct MessageUnit_B *reg = acb->pmuB;
1364 qbuffer = (struct QBUFFER __iomem *)reg->message_rbuffer;
1365 }
1366 break;
1367 case ACB_ADAPTER_TYPE_C: {
1368 struct MessageUnit_C *phbcmu = (struct MessageUnit_C *)acb->pmuC;
1369 qbuffer = (struct QBUFFER __iomem *)&phbcmu->message_rbuffer;
1370 }
1371 }
1372 return qbuffer;
1373 }
1374
1375 static struct QBUFFER __iomem *arcmsr_get_iop_wqbuffer(struct AdapterControlBlock *acb)
1376 {
1377 struct QBUFFER __iomem *pqbuffer = NULL;
1378 switch (acb->adapter_type) {
1379
1380 case ACB_ADAPTER_TYPE_A: {
1381 struct MessageUnit_A __iomem *reg = acb->pmuA;
1382 pqbuffer = (struct QBUFFER __iomem *) &reg->message_wbuffer;
1383 }
1384 break;
1385
1386 case ACB_ADAPTER_TYPE_B: {
1387 struct MessageUnit_B *reg = acb->pmuB;
1388 pqbuffer = (struct QBUFFER __iomem *)reg->message_wbuffer;
1389 }
1390 break;
1391 case ACB_ADAPTER_TYPE_C: {
1392 struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
1393 pqbuffer = (struct QBUFFER __iomem *)&reg->message_wbuffer;
1394 }
1395
1396 }
1397 return pqbuffer;
1398 }
1399
1400 static void arcmsr_iop2drv_data_wrote_handle(struct AdapterControlBlock *acb)
1401 {
1402 struct QBUFFER __iomem *prbuffer;
1403 struct QBUFFER *pQbuffer;
1404 uint8_t __iomem *iop_data;
1405 int32_t my_empty_len, iop_len, rqbuf_firstindex, rqbuf_lastindex;
1406 rqbuf_lastindex = acb->rqbuf_lastindex;
1407 rqbuf_firstindex = acb->rqbuf_firstindex;
1408 prbuffer = arcmsr_get_iop_rqbuffer(acb);
1409 iop_data = (uint8_t __iomem *)prbuffer->data;
1410 iop_len = prbuffer->data_len;
1411 my_empty_len = (rqbuf_firstindex - rqbuf_lastindex - 1) & (ARCMSR_MAX_QBUFFER - 1);
1412
1413 if (my_empty_len >= iop_len)
1414 {
1415 while (iop_len > 0) {
1416 pQbuffer = (struct QBUFFER *)&acb->rqbuffer[rqbuf_lastindex];
1417 memcpy(pQbuffer, iop_data, 1);
1418 rqbuf_lastindex++;
1419 rqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
1420 iop_data++;
1421 iop_len--;
1422 }
1423 acb->rqbuf_lastindex = rqbuf_lastindex;
1424 arcmsr_iop_message_read(acb);
1425 }
1426
1427 else {
1428 acb->acb_flags |= ACB_F_IOPDATA_OVERFLOW;
1429 }
1430 }
1431
1432 static void arcmsr_iop2drv_data_read_handle(struct AdapterControlBlock *acb)
1433 {
1434 acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_READED;
1435 if (acb->wqbuf_firstindex != acb->wqbuf_lastindex) {
1436 uint8_t *pQbuffer;
1437 struct QBUFFER __iomem *pwbuffer;
1438 uint8_t __iomem *iop_data;
1439 int32_t allxfer_len = 0;
1440
1441 acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED);
1442 pwbuffer = arcmsr_get_iop_wqbuffer(acb);
1443 iop_data = (uint8_t __iomem *)pwbuffer->data;
1444
1445 while ((acb->wqbuf_firstindex != acb->wqbuf_lastindex) && \
1446 (allxfer_len < 124)) {
1447 pQbuffer = &acb->wqbuffer[acb->wqbuf_firstindex];
1448 memcpy(iop_data, pQbuffer, 1);
1449 acb->wqbuf_firstindex++;
1450 acb->wqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
1451 iop_data++;
1452 allxfer_len++;
1453 }
1454 pwbuffer->data_len = allxfer_len;
1455
1456 arcmsr_iop_message_wrote(acb);
1457 }
1458
1459 if (acb->wqbuf_firstindex == acb->wqbuf_lastindex) {
1460 acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_CLEARED;
1461 }
1462 }
1463
1464 static void arcmsr_hba_doorbell_isr(struct AdapterControlBlock *acb)
1465 {
1466 uint32_t outbound_doorbell;
1467 struct MessageUnit_A __iomem *reg = acb->pmuA;
1468 outbound_doorbell = readl(&reg->outbound_doorbell);
1469 writel(outbound_doorbell, &reg->outbound_doorbell);
1470 if (outbound_doorbell & ARCMSR_OUTBOUND_IOP331_DATA_WRITE_OK) {
1471 arcmsr_iop2drv_data_wrote_handle(acb);
1472 }
1473
1474 if (outbound_doorbell & ARCMSR_OUTBOUND_IOP331_DATA_READ_OK) {
1475 arcmsr_iop2drv_data_read_handle(acb);
1476 }
1477 }
1478 static void arcmsr_hbc_doorbell_isr(struct AdapterControlBlock *pACB)
1479 {
1480 uint32_t outbound_doorbell;
1481 struct MessageUnit_C *reg = (struct MessageUnit_C *)pACB->pmuC;
1482 /*
1483 *******************************************************************
1484 ** Maybe here we need to check wrqbuffer_lock is lock or not
1485 ** DOORBELL: din! don!
1486 ** check if there are any mail need to pack from firmware
1487 *******************************************************************
1488 */
1489 outbound_doorbell = readl(&reg->outbound_doorbell);
1490 writel(outbound_doorbell, &reg->outbound_doorbell_clear);/*clear interrupt*/
1491 if (outbound_doorbell & ARCMSR_HBCMU_IOP2DRV_DATA_WRITE_OK) {
1492 arcmsr_iop2drv_data_wrote_handle(pACB);
1493 }
1494 if (outbound_doorbell & ARCMSR_HBCMU_IOP2DRV_DATA_READ_OK) {
1495 arcmsr_iop2drv_data_read_handle(pACB);
1496 }
1497 if (outbound_doorbell & ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE) {
1498 arcmsr_hbc_message_isr(pACB); /* messenger of "driver to iop commands" */
1499 }
1500 return;
1501 }
1502 static void arcmsr_hba_postqueue_isr(struct AdapterControlBlock *acb)
1503 {
1504 uint32_t flag_ccb;
1505 struct MessageUnit_A __iomem *reg = acb->pmuA;
1506 struct ARCMSR_CDB *pARCMSR_CDB;
1507 struct CommandControlBlock *pCCB;
1508 bool error;
1509 while ((flag_ccb = readl(&reg->outbound_queueport)) != 0xFFFFFFFF) {
1510 pARCMSR_CDB = (struct ARCMSR_CDB *)(acb->vir2phy_offset + (flag_ccb << 5));/*frame must be 32 bytes aligned*/
1511 pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
1512 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
1513 arcmsr_drain_donequeue(acb, pCCB, error);
1514 }
1515 }
1516
1517 static void arcmsr_hbb_postqueue_isr(struct AdapterControlBlock *acb)
1518 {
1519 uint32_t index;
1520 uint32_t flag_ccb;
1521 struct MessageUnit_B *reg = acb->pmuB;
1522 struct ARCMSR_CDB *pARCMSR_CDB;
1523 struct CommandControlBlock *pCCB;
1524 bool error;
1525 index = reg->doneq_index;
1526 while ((flag_ccb = readl(&reg->done_qbuffer[index])) != 0) {
1527 writel(0, &reg->done_qbuffer[index]);
1528 pARCMSR_CDB = (struct ARCMSR_CDB *)(acb->vir2phy_offset+(flag_ccb << 5));/*frame must be 32 bytes aligned*/
1529 pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
1530 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
1531 arcmsr_drain_donequeue(acb, pCCB, error);
1532 index++;
1533 index %= ARCMSR_MAX_HBB_POSTQUEUE;
1534 reg->doneq_index = index;
1535 }
1536 }
1537
1538 static void arcmsr_hbc_postqueue_isr(struct AdapterControlBlock *acb)
1539 {
1540 struct MessageUnit_C *phbcmu;
1541 struct ARCMSR_CDB *arcmsr_cdb;
1542 struct CommandControlBlock *ccb;
1543 uint32_t flag_ccb, ccb_cdb_phy, throttling = 0;
1544 int error;
1545
1546 phbcmu = (struct MessageUnit_C *)acb->pmuC;
1547 /* areca cdb command done */
1548 /* Use correct offset and size for syncing */
1549
1550 while (readl(&phbcmu->host_int_status) &
1551 ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR){
1552 /* check if command done with no error*/
1553 flag_ccb = readl(&phbcmu->outbound_queueport_low);
1554 ccb_cdb_phy = (flag_ccb & 0xFFFFFFF0);/*frame must be 32 bytes aligned*/
1555 arcmsr_cdb = (struct ARCMSR_CDB *)(acb->vir2phy_offset + ccb_cdb_phy);
1556 ccb = container_of(arcmsr_cdb, struct CommandControlBlock, arcmsr_cdb);
1557 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE1) ? true : false;
1558 /* check if command done with no error */
1559 arcmsr_drain_donequeue(acb, ccb, error);
1560 if (throttling == ARCMSR_HBC_ISR_THROTTLING_LEVEL) {
1561 writel(ARCMSR_HBCMU_DRV2IOP_POSTQUEUE_THROTTLING, &phbcmu->inbound_doorbell);
1562 break;
1563 }
1564 throttling++;
1565 }
1566 }
1567 /*
1568 **********************************************************************************
1569 ** Handle a message interrupt
1570 **
1571 ** The only message interrupt we expect is in response to a query for the current adapter config.
1572 ** We want this in order to compare the drivemap so that we can detect newly-attached drives.
1573 **********************************************************************************
1574 */
1575 static void arcmsr_hba_message_isr(struct AdapterControlBlock *acb)
1576 {
1577 struct MessageUnit_A *reg = acb->pmuA;
1578 /*clear interrupt and message state*/
1579 writel(ARCMSR_MU_OUTBOUND_MESSAGE0_INT, &reg->outbound_intstatus);
1580 schedule_work(&acb->arcmsr_do_message_isr_bh);
1581 }
1582 static void arcmsr_hbb_message_isr(struct AdapterControlBlock *acb)
1583 {
1584 struct MessageUnit_B *reg = acb->pmuB;
1585
1586 /*clear interrupt and message state*/
1587 writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN, reg->iop2drv_doorbell);
1588 schedule_work(&acb->arcmsr_do_message_isr_bh);
1589 }
1590 /*
1591 **********************************************************************************
1592 ** Handle a message interrupt
1593 **
1594 ** The only message interrupt we expect is in response to a query for the
1595 ** current adapter config.
1596 ** We want this in order to compare the drivemap so that we can detect newly-attached drives.
1597 **********************************************************************************
1598 */
1599 static void arcmsr_hbc_message_isr(struct AdapterControlBlock *acb)
1600 {
1601 struct MessageUnit_C *reg = acb->pmuC;
1602 /*clear interrupt and message state*/
1603 writel(ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE_DOORBELL_CLEAR, &reg->outbound_doorbell_clear);
1604 schedule_work(&acb->arcmsr_do_message_isr_bh);
1605 }
1606
1607 static int arcmsr_handle_hba_isr(struct AdapterControlBlock *acb)
1608 {
1609 uint32_t outbound_intstatus;
1610 struct MessageUnit_A __iomem *reg = acb->pmuA;
1611 outbound_intstatus = readl(&reg->outbound_intstatus) &
1612 acb->outbound_int_enable;
1613 if (!(outbound_intstatus & ARCMSR_MU_OUTBOUND_HANDLE_INT)) {
1614 return 1;
1615 }
1616 writel(outbound_intstatus, &reg->outbound_intstatus);
1617 if (outbound_intstatus & ARCMSR_MU_OUTBOUND_DOORBELL_INT) {
1618 arcmsr_hba_doorbell_isr(acb);
1619 }
1620 if (outbound_intstatus & ARCMSR_MU_OUTBOUND_POSTQUEUE_INT) {
1621 arcmsr_hba_postqueue_isr(acb);
1622 }
1623 if(outbound_intstatus & ARCMSR_MU_OUTBOUND_MESSAGE0_INT) {
1624 /* messenger of "driver to iop commands" */
1625 arcmsr_hba_message_isr(acb);
1626 }
1627 return 0;
1628 }
1629
1630 static int arcmsr_handle_hbb_isr(struct AdapterControlBlock *acb)
1631 {
1632 uint32_t outbound_doorbell;
1633 struct MessageUnit_B *reg = acb->pmuB;
1634 outbound_doorbell = readl(reg->iop2drv_doorbell) &
1635 acb->outbound_int_enable;
1636 if (!outbound_doorbell)
1637 return 1;
1638
1639 writel(~outbound_doorbell, reg->iop2drv_doorbell);
1640 /*in case the last action of doorbell interrupt clearance is cached,
1641 this action can push HW to write down the clear bit*/
1642 readl(reg->iop2drv_doorbell);
1643 writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT, reg->drv2iop_doorbell);
1644 if (outbound_doorbell & ARCMSR_IOP2DRV_DATA_WRITE_OK) {
1645 arcmsr_iop2drv_data_wrote_handle(acb);
1646 }
1647 if (outbound_doorbell & ARCMSR_IOP2DRV_DATA_READ_OK) {
1648 arcmsr_iop2drv_data_read_handle(acb);
1649 }
1650 if (outbound_doorbell & ARCMSR_IOP2DRV_CDB_DONE) {
1651 arcmsr_hbb_postqueue_isr(acb);
1652 }
1653 if(outbound_doorbell & ARCMSR_IOP2DRV_MESSAGE_CMD_DONE) {
1654 /* messenger of "driver to iop commands" */
1655 arcmsr_hbb_message_isr(acb);
1656 }
1657 return 0;
1658 }
1659
1660 static int arcmsr_handle_hbc_isr(struct AdapterControlBlock *pACB)
1661 {
1662 uint32_t host_interrupt_status;
1663 struct MessageUnit_C *phbcmu = (struct MessageUnit_C *)pACB->pmuC;
1664 /*
1665 *********************************************
1666 ** check outbound intstatus
1667 *********************************************
1668 */
1669 host_interrupt_status = readl(&phbcmu->host_int_status);
1670 if (!host_interrupt_status) {
1671 /*it must be share irq*/
1672 return 1;
1673 }
1674 /* MU ioctl transfer doorbell interrupts*/
1675 if (host_interrupt_status & ARCMSR_HBCMU_OUTBOUND_DOORBELL_ISR) {
1676 arcmsr_hbc_doorbell_isr(pACB); /* messenger of "ioctl message read write" */
1677 }
1678 /* MU post queue interrupts*/
1679 if (host_interrupt_status & ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR) {
1680 arcmsr_hbc_postqueue_isr(pACB); /* messenger of "scsi commands" */
1681 }
1682 return 0;
1683 }
1684 static irqreturn_t arcmsr_interrupt(struct AdapterControlBlock *acb)
1685 {
1686 switch (acb->adapter_type) {
1687 case ACB_ADAPTER_TYPE_A: {
1688 if (arcmsr_handle_hba_isr(acb)) {
1689 return IRQ_NONE;
1690 }
1691 }
1692 break;
1693
1694 case ACB_ADAPTER_TYPE_B: {
1695 if (arcmsr_handle_hbb_isr(acb)) {
1696 return IRQ_NONE;
1697 }
1698 }
1699 break;
1700 case ACB_ADAPTER_TYPE_C: {
1701 if (arcmsr_handle_hbc_isr(acb)) {
1702 return IRQ_NONE;
1703 }
1704 }
1705 }
1706 return IRQ_HANDLED;
1707 }
1708
1709 static void arcmsr_iop_parking(struct AdapterControlBlock *acb)
1710 {
1711 if (acb) {
1712 /* stop adapter background rebuild */
1713 if (acb->acb_flags & ACB_F_MSG_START_BGRB) {
1714 uint32_t intmask_org;
1715 acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
1716 intmask_org = arcmsr_disable_outbound_ints(acb);
1717 arcmsr_stop_adapter_bgrb(acb);
1718 arcmsr_flush_adapter_cache(acb);
1719 arcmsr_enable_outbound_ints(acb, intmask_org);
1720 }
1721 }
1722 }
1723
1724 void arcmsr_post_ioctldata2iop(struct AdapterControlBlock *acb)
1725 {
1726 int32_t wqbuf_firstindex, wqbuf_lastindex;
1727 uint8_t *pQbuffer;
1728 struct QBUFFER __iomem *pwbuffer;
1729 uint8_t __iomem *iop_data;
1730 int32_t allxfer_len = 0;
1731 pwbuffer = arcmsr_get_iop_wqbuffer(acb);
1732 iop_data = (uint8_t __iomem *)pwbuffer->data;
1733 if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_READED) {
1734 acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED);
1735 wqbuf_firstindex = acb->wqbuf_firstindex;
1736 wqbuf_lastindex = acb->wqbuf_lastindex;
1737 while ((wqbuf_firstindex != wqbuf_lastindex) && (allxfer_len < 124)) {
1738 pQbuffer = &acb->wqbuffer[wqbuf_firstindex];
1739 memcpy(iop_data, pQbuffer, 1);
1740 wqbuf_firstindex++;
1741 wqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
1742 iop_data++;
1743 allxfer_len++;
1744 }
1745 acb->wqbuf_firstindex = wqbuf_firstindex;
1746 pwbuffer->data_len = allxfer_len;
1747 arcmsr_iop_message_wrote(acb);
1748 }
1749 }
1750
1751 static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb,
1752 struct scsi_cmnd *cmd)
1753 {
1754 struct CMD_MESSAGE_FIELD *pcmdmessagefld;
1755 int retvalue = 0, transfer_len = 0;
1756 char *buffer;
1757 struct scatterlist *sg;
1758 uint32_t controlcode = (uint32_t ) cmd->cmnd[5] << 24 |
1759 (uint32_t ) cmd->cmnd[6] << 16 |
1760 (uint32_t ) cmd->cmnd[7] << 8 |
1761 (uint32_t ) cmd->cmnd[8];
1762 /* 4 bytes: Areca io control code */
1763 sg = scsi_sglist(cmd);
1764 buffer = kmap_atomic(sg_page(sg), KM_IRQ0) + sg->offset;
1765 if (scsi_sg_count(cmd) > 1) {
1766 retvalue = ARCMSR_MESSAGE_FAIL;
1767 goto message_out;
1768 }
1769 transfer_len += sg->length;
1770
1771 if (transfer_len > sizeof(struct CMD_MESSAGE_FIELD)) {
1772 retvalue = ARCMSR_MESSAGE_FAIL;
1773 goto message_out;
1774 }
1775 pcmdmessagefld = (struct CMD_MESSAGE_FIELD *) buffer;
1776 switch(controlcode) {
1777
1778 case ARCMSR_MESSAGE_READ_RQBUFFER: {
1779 unsigned char *ver_addr;
1780 uint8_t *pQbuffer, *ptmpQbuffer;
1781 int32_t allxfer_len = 0;
1782
1783 ver_addr = kmalloc(1032, GFP_ATOMIC);
1784 if (!ver_addr) {
1785 retvalue = ARCMSR_MESSAGE_FAIL;
1786 goto message_out;
1787 }
1788
1789 ptmpQbuffer = ver_addr;
1790 while ((acb->rqbuf_firstindex != acb->rqbuf_lastindex)
1791 && (allxfer_len < 1031)) {
1792 pQbuffer = &acb->rqbuffer[acb->rqbuf_firstindex];
1793 memcpy(ptmpQbuffer, pQbuffer, 1);
1794 acb->rqbuf_firstindex++;
1795 acb->rqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
1796 ptmpQbuffer++;
1797 allxfer_len++;
1798 }
1799 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
1800
1801 struct QBUFFER __iomem *prbuffer;
1802 uint8_t __iomem *iop_data;
1803 int32_t iop_len;
1804
1805 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
1806 prbuffer = arcmsr_get_iop_rqbuffer(acb);
1807 iop_data = prbuffer->data;
1808 iop_len = readl(&prbuffer->data_len);
1809 while (iop_len > 0) {
1810 acb->rqbuffer[acb->rqbuf_lastindex] = readb(iop_data);
1811 acb->rqbuf_lastindex++;
1812 acb->rqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
1813 iop_data++;
1814 iop_len--;
1815 }
1816 arcmsr_iop_message_read(acb);
1817 }
1818 memcpy(pcmdmessagefld->messagedatabuffer, ver_addr, allxfer_len);
1819 pcmdmessagefld->cmdmessage.Length = allxfer_len;
1820 if(acb->fw_flag == FW_DEADLOCK) {
1821 pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1822 }else{
1823 pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK;
1824 }
1825 kfree(ver_addr);
1826 }
1827 break;
1828
1829 case ARCMSR_MESSAGE_WRITE_WQBUFFER: {
1830 unsigned char *ver_addr;
1831 int32_t my_empty_len, user_len, wqbuf_firstindex, wqbuf_lastindex;
1832 uint8_t *pQbuffer, *ptmpuserbuffer;
1833
1834 ver_addr = kmalloc(1032, GFP_ATOMIC);
1835 if (!ver_addr) {
1836 retvalue = ARCMSR_MESSAGE_FAIL;
1837 goto message_out;
1838 }
1839 if(acb->fw_flag == FW_DEADLOCK) {
1840 pcmdmessagefld->cmdmessage.ReturnCode =
1841 ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1842 }else{
1843 pcmdmessagefld->cmdmessage.ReturnCode =
1844 ARCMSR_MESSAGE_RETURNCODE_OK;
1845 }
1846 ptmpuserbuffer = ver_addr;
1847 user_len = pcmdmessagefld->cmdmessage.Length;
1848 memcpy(ptmpuserbuffer, pcmdmessagefld->messagedatabuffer, user_len);
1849 wqbuf_lastindex = acb->wqbuf_lastindex;
1850 wqbuf_firstindex = acb->wqbuf_firstindex;
1851 if (wqbuf_lastindex != wqbuf_firstindex) {
1852 struct SENSE_DATA *sensebuffer =
1853 (struct SENSE_DATA *)cmd->sense_buffer;
1854 arcmsr_post_ioctldata2iop(acb);
1855 /* has error report sensedata */
1856 sensebuffer->ErrorCode = 0x70;
1857 sensebuffer->SenseKey = ILLEGAL_REQUEST;
1858 sensebuffer->AdditionalSenseLength = 0x0A;
1859 sensebuffer->AdditionalSenseCode = 0x20;
1860 sensebuffer->Valid = 1;
1861 retvalue = ARCMSR_MESSAGE_FAIL;
1862 } else {
1863 my_empty_len = (wqbuf_firstindex-wqbuf_lastindex - 1)
1864 &(ARCMSR_MAX_QBUFFER - 1);
1865 if (my_empty_len >= user_len) {
1866 while (user_len > 0) {
1867 pQbuffer =
1868 &acb->wqbuffer[acb->wqbuf_lastindex];
1869 memcpy(pQbuffer, ptmpuserbuffer, 1);
1870 acb->wqbuf_lastindex++;
1871 acb->wqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
1872 ptmpuserbuffer++;
1873 user_len--;
1874 }
1875 if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_CLEARED) {
1876 acb->acb_flags &=
1877 ~ACB_F_MESSAGE_WQBUFFER_CLEARED;
1878 arcmsr_post_ioctldata2iop(acb);
1879 }
1880 } else {
1881 /* has error report sensedata */
1882 struct SENSE_DATA *sensebuffer =
1883 (struct SENSE_DATA *)cmd->sense_buffer;
1884 sensebuffer->ErrorCode = 0x70;
1885 sensebuffer->SenseKey = ILLEGAL_REQUEST;
1886 sensebuffer->AdditionalSenseLength = 0x0A;
1887 sensebuffer->AdditionalSenseCode = 0x20;
1888 sensebuffer->Valid = 1;
1889 retvalue = ARCMSR_MESSAGE_FAIL;
1890 }
1891 }
1892 kfree(ver_addr);
1893 }
1894 break;
1895
1896 case ARCMSR_MESSAGE_CLEAR_RQBUFFER: {
1897 uint8_t *pQbuffer = acb->rqbuffer;
1898 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
1899 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
1900 arcmsr_iop_message_read(acb);
1901 }
1902 acb->acb_flags |= ACB_F_MESSAGE_RQBUFFER_CLEARED;
1903 acb->rqbuf_firstindex = 0;
1904 acb->rqbuf_lastindex = 0;
1905 memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER);
1906 if(acb->fw_flag == FW_DEADLOCK) {
1907 pcmdmessagefld->cmdmessage.ReturnCode =
1908 ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1909 }else{
1910 pcmdmessagefld->cmdmessage.ReturnCode =
1911 ARCMSR_MESSAGE_RETURNCODE_OK;
1912 }
1913 }
1914 break;
1915
1916 case ARCMSR_MESSAGE_CLEAR_WQBUFFER: {
1917 uint8_t *pQbuffer = acb->wqbuffer;
1918 if(acb->fw_flag == FW_DEADLOCK) {
1919 pcmdmessagefld->cmdmessage.ReturnCode =
1920 ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1921 }else{
1922 pcmdmessagefld->cmdmessage.ReturnCode =
1923 ARCMSR_MESSAGE_RETURNCODE_OK;
1924 }
1925
1926 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
1927 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
1928 arcmsr_iop_message_read(acb);
1929 }
1930 acb->acb_flags |=
1931 (ACB_F_MESSAGE_WQBUFFER_CLEARED |
1932 ACB_F_MESSAGE_WQBUFFER_READED);
1933 acb->wqbuf_firstindex = 0;
1934 acb->wqbuf_lastindex = 0;
1935 memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER);
1936 }
1937 break;
1938
1939 case ARCMSR_MESSAGE_CLEAR_ALLQBUFFER: {
1940 uint8_t *pQbuffer;
1941
1942 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
1943 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
1944 arcmsr_iop_message_read(acb);
1945 }
1946 acb->acb_flags |=
1947 (ACB_F_MESSAGE_WQBUFFER_CLEARED
1948 | ACB_F_MESSAGE_RQBUFFER_CLEARED
1949 | ACB_F_MESSAGE_WQBUFFER_READED);
1950 acb->rqbuf_firstindex = 0;
1951 acb->rqbuf_lastindex = 0;
1952 acb->wqbuf_firstindex = 0;
1953 acb->wqbuf_lastindex = 0;
1954 pQbuffer = acb->rqbuffer;
1955 memset(pQbuffer, 0, sizeof(struct QBUFFER));
1956 pQbuffer = acb->wqbuffer;
1957 memset(pQbuffer, 0, sizeof(struct QBUFFER));
1958 if(acb->fw_flag == FW_DEADLOCK) {
1959 pcmdmessagefld->cmdmessage.ReturnCode =
1960 ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1961 }else{
1962 pcmdmessagefld->cmdmessage.ReturnCode =
1963 ARCMSR_MESSAGE_RETURNCODE_OK;
1964 }
1965 }
1966 break;
1967
1968 case ARCMSR_MESSAGE_RETURN_CODE_3F: {
1969 if(acb->fw_flag == FW_DEADLOCK) {
1970 pcmdmessagefld->cmdmessage.ReturnCode =
1971 ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1972 }else{
1973 pcmdmessagefld->cmdmessage.ReturnCode =
1974 ARCMSR_MESSAGE_RETURNCODE_3F;
1975 }
1976 break;
1977 }
1978 case ARCMSR_MESSAGE_SAY_HELLO: {
1979 int8_t *hello_string = "Hello! I am ARCMSR";
1980 if(acb->fw_flag == FW_DEADLOCK) {
1981 pcmdmessagefld->cmdmessage.ReturnCode =
1982 ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1983 }else{
1984 pcmdmessagefld->cmdmessage.ReturnCode =
1985 ARCMSR_MESSAGE_RETURNCODE_OK;
1986 }
1987 memcpy(pcmdmessagefld->messagedatabuffer, hello_string
1988 , (int16_t)strlen(hello_string));
1989 }
1990 break;
1991
1992 case ARCMSR_MESSAGE_SAY_GOODBYE:
1993 if(acb->fw_flag == FW_DEADLOCK) {
1994 pcmdmessagefld->cmdmessage.ReturnCode =
1995 ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1996 }
1997 arcmsr_iop_parking(acb);
1998 break;
1999
2000 case ARCMSR_MESSAGE_FLUSH_ADAPTER_CACHE:
2001 if(acb->fw_flag == FW_DEADLOCK) {
2002 pcmdmessagefld->cmdmessage.ReturnCode =
2003 ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
2004 }
2005 arcmsr_flush_adapter_cache(acb);
2006 break;
2007
2008 default:
2009 retvalue = ARCMSR_MESSAGE_FAIL;
2010 }
2011 message_out:
2012 sg = scsi_sglist(cmd);
2013 kunmap_atomic(buffer - sg->offset, KM_IRQ0);
2014 return retvalue;
2015 }
2016
2017 static struct CommandControlBlock *arcmsr_get_freeccb(struct AdapterControlBlock *acb)
2018 {
2019 struct list_head *head = &acb->ccb_free_list;
2020 struct CommandControlBlock *ccb = NULL;
2021 unsigned long flags;
2022 spin_lock_irqsave(&acb->ccblist_lock, flags);
2023 if (!list_empty(head)) {
2024 ccb = list_entry(head->next, struct CommandControlBlock, list);
2025 list_del_init(&ccb->list);
2026 }else{
2027 spin_unlock_irqrestore(&acb->ccblist_lock, flags);
2028 return 0;
2029 }
2030 spin_unlock_irqrestore(&acb->ccblist_lock, flags);
2031 return ccb;
2032 }
2033
2034 static void arcmsr_handle_virtual_command(struct AdapterControlBlock *acb,
2035 struct scsi_cmnd *cmd)
2036 {
2037 switch (cmd->cmnd[0]) {
2038 case INQUIRY: {
2039 unsigned char inqdata[36];
2040 char *buffer;
2041 struct scatterlist *sg;
2042
2043 if (cmd->device->lun) {
2044 cmd->result = (DID_TIME_OUT << 16);
2045 cmd->scsi_done(cmd);
2046 return;
2047 }
2048 inqdata[0] = TYPE_PROCESSOR;
2049 /* Periph Qualifier & Periph Dev Type */
2050 inqdata[1] = 0;
2051 /* rem media bit & Dev Type Modifier */
2052 inqdata[2] = 0;
2053 /* ISO, ECMA, & ANSI versions */
2054 inqdata[4] = 31;
2055 /* length of additional data */
2056 strncpy(&inqdata[8], "Areca ", 8);
2057 /* Vendor Identification */
2058 strncpy(&inqdata[16], "RAID controller ", 16);
2059 /* Product Identification */
2060 strncpy(&inqdata[32], "R001", 4); /* Product Revision */
2061
2062 sg = scsi_sglist(cmd);
2063 buffer = kmap_atomic(sg_page(sg), KM_IRQ0) + sg->offset;
2064
2065 memcpy(buffer, inqdata, sizeof(inqdata));
2066 sg = scsi_sglist(cmd);
2067 kunmap_atomic(buffer - sg->offset, KM_IRQ0);
2068
2069 cmd->scsi_done(cmd);
2070 }
2071 break;
2072 case WRITE_BUFFER:
2073 case READ_BUFFER: {
2074 if (arcmsr_iop_message_xfer(acb, cmd))
2075 cmd->result = (DID_ERROR << 16);
2076 cmd->scsi_done(cmd);
2077 }
2078 break;
2079 default:
2080 cmd->scsi_done(cmd);
2081 }
2082 }
2083
2084 static int arcmsr_queue_command(struct scsi_cmnd *cmd,
2085 void (* done)(struct scsi_cmnd *))
2086 {
2087 struct Scsi_Host *host = cmd->device->host;
2088 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
2089 struct CommandControlBlock *ccb;
2090 int target = cmd->device->id;
2091 int lun = cmd->device->lun;
2092 uint8_t scsicmd = cmd->cmnd[0];
2093 cmd->scsi_done = done;
2094 cmd->host_scribble = NULL;
2095 cmd->result = 0;
2096 if ((scsicmd == SYNCHRONIZE_CACHE) ||(scsicmd == SEND_DIAGNOSTIC)){
2097 if(acb->devstate[target][lun] == ARECA_RAID_GONE) {
2098 cmd->result = (DID_NO_CONNECT << 16);
2099 }
2100 cmd->scsi_done(cmd);
2101 return 0;
2102 }
2103 if (target == 16) {
2104 /* virtual device for iop message transfer */
2105 arcmsr_handle_virtual_command(acb, cmd);
2106 return 0;
2107 }
2108 if (atomic_read(&acb->ccboutstandingcount) >=
2109 ARCMSR_MAX_OUTSTANDING_CMD)
2110 return SCSI_MLQUEUE_HOST_BUSY;
2111 if ((scsicmd == SCSI_CMD_ARECA_SPECIFIC)) {
2112 printk(KERN_NOTICE "Receiveing SCSI_CMD_ARECA_SPECIFIC command..\n");
2113 return 0;
2114 }
2115 ccb = arcmsr_get_freeccb(acb);
2116 if (!ccb)
2117 return SCSI_MLQUEUE_HOST_BUSY;
2118 if (arcmsr_build_ccb( acb, ccb, cmd ) == FAILED) {
2119 cmd->result = (DID_ERROR << 16) | (RESERVATION_CONFLICT << 1);
2120 cmd->scsi_done(cmd);
2121 return 0;
2122 }
2123 arcmsr_post_ccb(acb, ccb);
2124 return 0;
2125 }
2126
2127 static bool arcmsr_get_hba_config(struct AdapterControlBlock *acb)
2128 {
2129 struct MessageUnit_A __iomem *reg = acb->pmuA;
2130 char *acb_firm_model = acb->firm_model;
2131 char *acb_firm_version = acb->firm_version;
2132 char *acb_device_map = acb->device_map;
2133 char __iomem *iop_firm_model = (char __iomem *)(&reg->message_rwbuffer[15]);
2134 char __iomem *iop_firm_version = (char __iomem *)(&reg->message_rwbuffer[17]);
2135 char __iomem *iop_device_map = (char __iomem *)(&reg->message_rwbuffer[21]);
2136 int count;
2137 writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
2138 if (!arcmsr_hba_wait_msgint_ready(acb)) {
2139 printk(KERN_NOTICE "arcmsr%d: wait 'get adapter firmware \
2140 miscellaneous data' timeout \n", acb->host->host_no);
2141 return false;
2142 }
2143 count = 8;
2144 while (count){
2145 *acb_firm_model = readb(iop_firm_model);
2146 acb_firm_model++;
2147 iop_firm_model++;
2148 count--;
2149 }
2150
2151 count = 16;
2152 while (count){
2153 *acb_firm_version = readb(iop_firm_version);
2154 acb_firm_version++;
2155 iop_firm_version++;
2156 count--;
2157 }
2158
2159 count=16;
2160 while(count){
2161 *acb_device_map = readb(iop_device_map);
2162 acb_device_map++;
2163 iop_device_map++;
2164 count--;
2165 }
2166 printk(KERN_NOTICE "Areca RAID Controller%d: F/W %s & Model %s\n",
2167 acb->host->host_no,
2168 acb->firm_version,
2169 acb->firm_model);
2170 acb->signature = readl(&reg->message_rwbuffer[0]);
2171 acb->firm_request_len = readl(&reg->message_rwbuffer[1]);
2172 acb->firm_numbers_queue = readl(&reg->message_rwbuffer[2]);
2173 acb->firm_sdram_size = readl(&reg->message_rwbuffer[3]);
2174 acb->firm_hd_channels = readl(&reg->message_rwbuffer[4]);
2175 acb->firm_cfg_version = readl(&reg->message_rwbuffer[25]); /*firm_cfg_version,25,100-103*/
2176 return true;
2177 }
2178 static bool arcmsr_get_hbb_config(struct AdapterControlBlock *acb)
2179 {
2180 struct MessageUnit_B *reg = acb->pmuB;
2181 struct pci_dev *pdev = acb->pdev;
2182 void *dma_coherent;
2183 dma_addr_t dma_coherent_handle;
2184 char *acb_firm_model = acb->firm_model;
2185 char *acb_firm_version = acb->firm_version;
2186 char *acb_device_map = acb->device_map;
2187 char __iomem *iop_firm_model;
2188 /*firm_model,15,60-67*/
2189 char __iomem *iop_firm_version;
2190 /*firm_version,17,68-83*/
2191 char __iomem *iop_device_map;
2192 /*firm_version,21,84-99*/
2193 int count;
2194 dma_coherent = dma_alloc_coherent(&pdev->dev, sizeof(struct MessageUnit_B), &dma_coherent_handle, GFP_KERNEL);
2195 if (!dma_coherent){
2196 printk(KERN_NOTICE "arcmsr%d: dma_alloc_coherent got error for hbb mu\n", acb->host->host_no);
2197 return false;
2198 }
2199 acb->dma_coherent_handle_hbb_mu = dma_coherent_handle;
2200 reg = (struct MessageUnit_B *)dma_coherent;
2201 acb->pmuB = reg;
2202 reg->drv2iop_doorbell= (uint32_t __iomem *)((unsigned long)acb->mem_base0 + ARCMSR_DRV2IOP_DOORBELL);
2203 reg->drv2iop_doorbell_mask = (uint32_t __iomem *)((unsigned long)acb->mem_base0 + ARCMSR_DRV2IOP_DOORBELL_MASK);
2204 reg->iop2drv_doorbell = (uint32_t __iomem *)((unsigned long)acb->mem_base0 + ARCMSR_IOP2DRV_DOORBELL);
2205 reg->iop2drv_doorbell_mask = (uint32_t __iomem *)((unsigned long)acb->mem_base0 + ARCMSR_IOP2DRV_DOORBELL_MASK);
2206 reg->message_wbuffer = (uint32_t __iomem *)((unsigned long)acb->mem_base1 + ARCMSR_MESSAGE_WBUFFER);
2207 reg->message_rbuffer = (uint32_t __iomem *)((unsigned long)acb->mem_base1 + ARCMSR_MESSAGE_RBUFFER);
2208 reg->message_rwbuffer = (uint32_t __iomem *)((unsigned long)acb->mem_base1 + ARCMSR_MESSAGE_RWBUFFER);
2209 iop_firm_model = (char __iomem *)(&reg->message_rwbuffer[15]); /*firm_model,15,60-67*/
2210 iop_firm_version = (char __iomem *)(&reg->message_rwbuffer[17]); /*firm_version,17,68-83*/
2211 iop_device_map = (char __iomem *)(&reg->message_rwbuffer[21]); /*firm_version,21,84-99*/
2212
2213 writel(ARCMSR_MESSAGE_GET_CONFIG, reg->drv2iop_doorbell);
2214 if (!arcmsr_hbb_wait_msgint_ready(acb)) {
2215 printk(KERN_NOTICE "arcmsr%d: wait 'get adapter firmware \
2216 miscellaneous data' timeout \n", acb->host->host_no);
2217 return false;
2218 }
2219 count = 8;
2220 while (count){
2221 *acb_firm_model = readb(iop_firm_model);
2222 acb_firm_model++;
2223 iop_firm_model++;
2224 count--;
2225 }
2226 count = 16;
2227 while (count){
2228 *acb_firm_version = readb(iop_firm_version);
2229 acb_firm_version++;
2230 iop_firm_version++;
2231 count--;
2232 }
2233
2234 count = 16;
2235 while(count){
2236 *acb_device_map = readb(iop_device_map);
2237 acb_device_map++;
2238 iop_device_map++;
2239 count--;
2240 }
2241
2242 printk(KERN_NOTICE "Areca RAID Controller%d: F/W %s & Model %s\n",
2243 acb->host->host_no,
2244 acb->firm_version,
2245 acb->firm_model);
2246
2247 acb->signature = readl(&reg->message_rwbuffer[1]);
2248 /*firm_signature,1,00-03*/
2249 acb->firm_request_len = readl(&reg->message_rwbuffer[2]);
2250 /*firm_request_len,1,04-07*/
2251 acb->firm_numbers_queue = readl(&reg->message_rwbuffer[3]);
2252 /*firm_numbers_queue,2,08-11*/
2253 acb->firm_sdram_size = readl(&reg->message_rwbuffer[4]);
2254 /*firm_sdram_size,3,12-15*/
2255 acb->firm_hd_channels = readl(&reg->message_rwbuffer[5]);
2256 /*firm_ide_channels,4,16-19*/
2257 acb->firm_cfg_version = readl(&reg->message_rwbuffer[25]); /*firm_cfg_version,25,100-103*/
2258 /*firm_ide_channels,4,16-19*/
2259 return true;
2260 }
2261
2262 static bool arcmsr_get_hbc_config(struct AdapterControlBlock *pACB)
2263 {
2264 uint32_t intmask_org, Index, firmware_state = 0;
2265 struct MessageUnit_C *reg = pACB->pmuC;
2266 char *acb_firm_model = pACB->firm_model;
2267 char *acb_firm_version = pACB->firm_version;
2268 char *iop_firm_model = (char *)(&reg->msgcode_rwbuffer[15]); /*firm_model,15,60-67*/
2269 char *iop_firm_version = (char *)(&reg->msgcode_rwbuffer[17]); /*firm_version,17,68-83*/
2270 int count;
2271 /* disable all outbound interrupt */
2272 intmask_org = readl(&reg->host_int_mask); /* disable outbound message0 int */
2273 writel(intmask_org|ARCMSR_HBCMU_ALL_INTMASKENABLE, &reg->host_int_mask);
2274 /* wait firmware ready */
2275 do {
2276 firmware_state = readl(&reg->outbound_msgaddr1);
2277 } while ((firmware_state & ARCMSR_HBCMU_MESSAGE_FIRMWARE_OK) == 0);
2278 /* post "get config" instruction */
2279 writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
2280 writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
2281 /* wait message ready */
2282 for (Index = 0; Index < 2000; Index++) {
2283 if (readl(&reg->outbound_doorbell) & ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE) {
2284 writel(ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE_DOORBELL_CLEAR, &reg->outbound_doorbell_clear);/*clear interrupt*/
2285 break;
2286 }
2287 udelay(10);
2288 } /*max 1 seconds*/
2289 if (Index >= 2000) {
2290 printk(KERN_NOTICE "arcmsr%d: wait 'get adapter firmware \
2291 miscellaneous data' timeout \n", pACB->host->host_no);
2292 return false;
2293 }
2294 count = 8;
2295 while (count) {
2296 *acb_firm_model = readb(iop_firm_model);
2297 acb_firm_model++;
2298 iop_firm_model++;
2299 count--;
2300 }
2301 count = 16;
2302 while (count) {
2303 *acb_firm_version = readb(iop_firm_version);
2304 acb_firm_version++;
2305 iop_firm_version++;
2306 count--;
2307 }
2308 printk(KERN_NOTICE "Areca RAID Controller%d: F/W %s & Model %s\n",
2309 pACB->host->host_no,
2310 pACB->firm_version,
2311 pACB->firm_model);
2312 pACB->firm_request_len = readl(&reg->msgcode_rwbuffer[1]); /*firm_request_len,1,04-07*/
2313 pACB->firm_numbers_queue = readl(&reg->msgcode_rwbuffer[2]); /*firm_numbers_queue,2,08-11*/
2314 pACB->firm_sdram_size = readl(&reg->msgcode_rwbuffer[3]); /*firm_sdram_size,3,12-15*/
2315 pACB->firm_hd_channels = readl(&reg->msgcode_rwbuffer[4]); /*firm_ide_channels,4,16-19*/
2316 pACB->firm_cfg_version = readl(&reg->msgcode_rwbuffer[25]); /*firm_cfg_version,25,100-103*/
2317 /*all interrupt service will be enable at arcmsr_iop_init*/
2318 return true;
2319 }
2320 static bool arcmsr_get_firmware_spec(struct AdapterControlBlock *acb)
2321 {
2322 if (acb->adapter_type == ACB_ADAPTER_TYPE_A)
2323 return arcmsr_get_hba_config(acb);
2324 else if (acb->adapter_type == ACB_ADAPTER_TYPE_B)
2325 return arcmsr_get_hbb_config(acb);
2326 else
2327 return arcmsr_get_hbc_config(acb);
2328 }
2329
2330 static int arcmsr_polling_hba_ccbdone(struct AdapterControlBlock *acb,
2331 struct CommandControlBlock *poll_ccb)
2332 {
2333 struct MessageUnit_A __iomem *reg = acb->pmuA;
2334 struct CommandControlBlock *ccb;
2335 struct ARCMSR_CDB *arcmsr_cdb;
2336 uint32_t flag_ccb, outbound_intstatus, poll_ccb_done = 0, poll_count = 0;
2337 int rtn;
2338 bool error;
2339 polling_hba_ccb_retry:
2340 poll_count++;
2341 outbound_intstatus = readl(&reg->outbound_intstatus) & acb->outbound_int_enable;
2342 writel(outbound_intstatus, &reg->outbound_intstatus);/*clear interrupt*/
2343 while (1) {
2344 if ((flag_ccb = readl(&reg->outbound_queueport)) == 0xFFFFFFFF) {
2345 if (poll_ccb_done){
2346 rtn = SUCCESS;
2347 break;
2348 }else {
2349 msleep(25);
2350 if (poll_count > 100){
2351 rtn = FAILED;
2352 break;
2353 }
2354 goto polling_hba_ccb_retry;
2355 }
2356 }
2357 arcmsr_cdb = (struct ARCMSR_CDB *)(acb->vir2phy_offset + (flag_ccb << 5));
2358 ccb = container_of(arcmsr_cdb, struct CommandControlBlock, arcmsr_cdb);
2359 poll_ccb_done = (ccb == poll_ccb) ? 1:0;
2360 if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) {
2361 if ((ccb->startdone == ARCMSR_CCB_ABORTED) || (ccb == poll_ccb)) {
2362 printk(KERN_NOTICE "arcmsr%d: scsi id = %d lun = %d ccb = '0x%p'"
2363 " poll command abort successfully \n"
2364 , acb->host->host_no
2365 , ccb->pcmd->device->id
2366 , ccb->pcmd->device->lun
2367 , ccb);
2368 ccb->pcmd->result = DID_ABORT << 16;
2369 arcmsr_ccb_complete(ccb);
2370 continue;
2371 }
2372 printk(KERN_NOTICE "arcmsr%d: polling get an illegal ccb"
2373 " command done ccb = '0x%p'"
2374 "ccboutstandingcount = %d \n"
2375 , acb->host->host_no
2376 , ccb
2377 , atomic_read(&acb->ccboutstandingcount));
2378 continue;
2379 }
2380 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
2381 arcmsr_report_ccb_state(acb, ccb, error);
2382 }
2383 return rtn;
2384 }
2385
2386 static int arcmsr_polling_hbb_ccbdone(struct AdapterControlBlock *acb,
2387 struct CommandControlBlock *poll_ccb)
2388 {
2389 struct MessageUnit_B *reg = acb->pmuB;
2390 struct ARCMSR_CDB *arcmsr_cdb;
2391 struct CommandControlBlock *ccb;
2392 uint32_t flag_ccb, poll_ccb_done = 0, poll_count = 0;
2393 int index, rtn;
2394 bool error;
2395 polling_hbb_ccb_retry:
2396 poll_count++;
2397 /* clear doorbell interrupt */
2398 writel(ARCMSR_DOORBELL_INT_CLEAR_PATTERN, reg->iop2drv_doorbell);
2399 while(1){
2400 index = reg->doneq_index;
2401 if ((flag_ccb = readl(&reg->done_qbuffer[index])) == 0) {
2402 if (poll_ccb_done){
2403 rtn = SUCCESS;
2404 break;
2405 }else {
2406 msleep(25);
2407 if (poll_count > 100){
2408 rtn = FAILED;
2409 break;
2410 }
2411 goto polling_hbb_ccb_retry;
2412 }
2413 }
2414 writel(0, &reg->done_qbuffer[index]);
2415 index++;
2416 /*if last index number set it to 0 */
2417 index %= ARCMSR_MAX_HBB_POSTQUEUE;
2418 reg->doneq_index = index;
2419 /* check if command done with no error*/
2420 arcmsr_cdb = (struct ARCMSR_CDB *)(acb->vir2phy_offset + (flag_ccb << 5));
2421 ccb = container_of(arcmsr_cdb, struct CommandControlBlock, arcmsr_cdb);
2422 poll_ccb_done = (ccb == poll_ccb) ? 1:0;
2423 if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) {
2424 if ((ccb->startdone == ARCMSR_CCB_ABORTED) || (ccb == poll_ccb)) {
2425 printk(KERN_NOTICE "arcmsr%d: scsi id = %d lun = %d ccb = '0x%p'"
2426 " poll command abort successfully \n"
2427 ,acb->host->host_no
2428 ,ccb->pcmd->device->id
2429 ,ccb->pcmd->device->lun
2430 ,ccb);
2431 ccb->pcmd->result = DID_ABORT << 16;
2432 arcmsr_ccb_complete(ccb);
2433 continue;
2434 }
2435 printk(KERN_NOTICE "arcmsr%d: polling get an illegal ccb"
2436 " command done ccb = '0x%p'"
2437 "ccboutstandingcount = %d \n"
2438 , acb->host->host_no
2439 , ccb
2440 , atomic_read(&acb->ccboutstandingcount));
2441 continue;
2442 }
2443 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
2444 arcmsr_report_ccb_state(acb, ccb, error);
2445 }
2446 return rtn;
2447 }
2448
2449 static int arcmsr_polling_hbc_ccbdone(struct AdapterControlBlock *acb, struct CommandControlBlock *poll_ccb)
2450 {
2451 struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
2452 uint32_t flag_ccb, ccb_cdb_phy;
2453 struct ARCMSR_CDB *arcmsr_cdb;
2454 bool error;
2455 struct CommandControlBlock *pCCB;
2456 uint32_t poll_ccb_done = 0, poll_count = 0;
2457 int rtn;
2458 polling_hbc_ccb_retry:
2459 poll_count++;
2460 while (1) {
2461 if ((readl(&reg->host_int_status) & ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR) == 0) {
2462 if (poll_ccb_done) {
2463 rtn = SUCCESS;
2464 break;
2465 } else {
2466 msleep(25);
2467 if (poll_count > 100) {
2468 rtn = FAILED;
2469 break;
2470 }
2471 goto polling_hbc_ccb_retry;
2472 }
2473 }
2474 flag_ccb = readl(&reg->outbound_queueport_low);
2475 ccb_cdb_phy = (flag_ccb & 0xFFFFFFF0);
2476 arcmsr_cdb = (struct ARCMSR_CDB *)(acb->vir2phy_offset + ccb_cdb_phy);/*frame must be 32 bytes aligned*/
2477 pCCB = container_of(arcmsr_cdb, struct CommandControlBlock, arcmsr_cdb);
2478 poll_ccb_done = (pCCB == poll_ccb) ? 1 : 0;
2479 /* check ifcommand done with no error*/
2480 if ((pCCB->acb != acb) || (pCCB->startdone != ARCMSR_CCB_START)) {
2481 if (pCCB->startdone == ARCMSR_CCB_ABORTED) {
2482 printk(KERN_NOTICE "arcmsr%d: scsi id = %d lun = %d ccb = '0x%p'"
2483 " poll command abort successfully \n"
2484 , acb->host->host_no
2485 , pCCB->pcmd->device->id
2486 , pCCB->pcmd->device->lun
2487 , pCCB);
2488 pCCB->pcmd->result = DID_ABORT << 16;
2489 arcmsr_ccb_complete(pCCB);
2490 continue;
2491 }
2492 printk(KERN_NOTICE "arcmsr%d: polling get an illegal ccb"
2493 " command done ccb = '0x%p'"
2494 "ccboutstandingcount = %d \n"
2495 , acb->host->host_no
2496 , pCCB
2497 , atomic_read(&acb->ccboutstandingcount));
2498 continue;
2499 }
2500 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE1) ? true : false;
2501 arcmsr_report_ccb_state(acb, pCCB, error);
2502 }
2503 return rtn;
2504 }
2505 static int arcmsr_polling_ccbdone(struct AdapterControlBlock *acb,
2506 struct CommandControlBlock *poll_ccb)
2507 {
2508 int rtn = 0;
2509 switch (acb->adapter_type) {
2510
2511 case ACB_ADAPTER_TYPE_A: {
2512 rtn = arcmsr_polling_hba_ccbdone(acb, poll_ccb);
2513 }
2514 break;
2515
2516 case ACB_ADAPTER_TYPE_B: {
2517 rtn = arcmsr_polling_hbb_ccbdone(acb, poll_ccb);
2518 }
2519 break;
2520 case ACB_ADAPTER_TYPE_C: {
2521 rtn = arcmsr_polling_hbc_ccbdone(acb, poll_ccb);
2522 }
2523 }
2524 return rtn;
2525 }
2526
2527 static int arcmsr_iop_confirm(struct AdapterControlBlock *acb)
2528 {
2529 uint32_t cdb_phyaddr, cdb_phyaddr_hi32;
2530 dma_addr_t dma_coherent_handle;
2531 /*
2532 ********************************************************************
2533 ** here we need to tell iop 331 our freeccb.HighPart
2534 ** if freeccb.HighPart is not zero
2535 ********************************************************************
2536 */
2537 dma_coherent_handle = acb->dma_coherent_handle;
2538 cdb_phyaddr = (uint32_t)(dma_coherent_handle);
2539 cdb_phyaddr_hi32 = (uint32_t)((cdb_phyaddr >> 16) >> 16);
2540 acb->cdb_phyaddr_hi32 = cdb_phyaddr_hi32;
2541 /*
2542 ***********************************************************************
2543 ** if adapter type B, set window of "post command Q"
2544 ***********************************************************************
2545 */
2546 switch (acb->adapter_type) {
2547
2548 case ACB_ADAPTER_TYPE_A: {
2549 if (cdb_phyaddr_hi32 != 0) {
2550 struct MessageUnit_A __iomem *reg = acb->pmuA;
2551 uint32_t intmask_org;
2552 intmask_org = arcmsr_disable_outbound_ints(acb);
2553 writel(ARCMSR_SIGNATURE_SET_CONFIG, \
2554 &reg->message_rwbuffer[0]);
2555 writel(cdb_phyaddr_hi32, &reg->message_rwbuffer[1]);
2556 writel(ARCMSR_INBOUND_MESG0_SET_CONFIG, \
2557 &reg->inbound_msgaddr0);
2558 if (!arcmsr_hba_wait_msgint_ready(acb)) {
2559 printk(KERN_NOTICE "arcmsr%d: ""set ccb high \
2560 part physical address timeout\n",
2561 acb->host->host_no);
2562 return 1;
2563 }
2564 arcmsr_enable_outbound_ints(acb, intmask_org);
2565 }
2566 }
2567 break;
2568
2569 case ACB_ADAPTER_TYPE_B: {
2570 unsigned long post_queue_phyaddr;
2571 uint32_t __iomem *rwbuffer;
2572
2573 struct MessageUnit_B *reg = acb->pmuB;
2574 uint32_t intmask_org;
2575 intmask_org = arcmsr_disable_outbound_ints(acb);
2576 reg->postq_index = 0;
2577 reg->doneq_index = 0;
2578 writel(ARCMSR_MESSAGE_SET_POST_WINDOW, reg->drv2iop_doorbell);
2579 if (!arcmsr_hbb_wait_msgint_ready(acb)) {
2580 printk(KERN_NOTICE "arcmsr%d:can not set diver mode\n", \
2581 acb->host->host_no);
2582 return 1;
2583 }
2584 post_queue_phyaddr = acb->dma_coherent_handle_hbb_mu;
2585 rwbuffer = reg->message_rwbuffer;
2586 /* driver "set config" signature */
2587 writel(ARCMSR_SIGNATURE_SET_CONFIG, rwbuffer++);
2588 /* normal should be zero */
2589 writel(cdb_phyaddr_hi32, rwbuffer++);
2590 /* postQ size (256 + 8)*4 */
2591 writel(post_queue_phyaddr, rwbuffer++);
2592 /* doneQ size (256 + 8)*4 */
2593 writel(post_queue_phyaddr + 1056, rwbuffer++);
2594 /* ccb maxQ size must be --> [(256 + 8)*4]*/
2595 writel(1056, rwbuffer);
2596
2597 writel(ARCMSR_MESSAGE_SET_CONFIG, reg->drv2iop_doorbell);
2598 if (!arcmsr_hbb_wait_msgint_ready(acb)) {
2599 printk(KERN_NOTICE "arcmsr%d: 'set command Q window' \
2600 timeout \n",acb->host->host_no);
2601 return 1;
2602 }
2603 arcmsr_hbb_enable_driver_mode(acb);
2604 arcmsr_enable_outbound_ints(acb, intmask_org);
2605 }
2606 break;
2607 case ACB_ADAPTER_TYPE_C: {
2608 if (cdb_phyaddr_hi32 != 0) {
2609 struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
2610
2611 if (cdb_phyaddr_hi32 != 0) {
2612 unsigned char Retries = 0x00;
2613 do {
2614 printk(KERN_NOTICE "arcmsr%d: cdb_phyaddr_hi32=0x%x \n", acb->adapter_index, cdb_phyaddr_hi32);
2615 } while (Retries++ < 100);
2616 }
2617 writel(ARCMSR_SIGNATURE_SET_CONFIG, &reg->msgcode_rwbuffer[0]);
2618 writel(cdb_phyaddr_hi32, &reg->msgcode_rwbuffer[1]);
2619 writel(ARCMSR_INBOUND_MESG0_SET_CONFIG, &reg->inbound_msgaddr0);
2620 writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
2621 if (!arcmsr_hbc_wait_msgint_ready(acb)) {
2622 printk(KERN_NOTICE "arcmsr%d: 'set command Q window' \
2623 timeout \n", acb->host->host_no);
2624 return 1;
2625 }
2626 }
2627 }
2628 }
2629 return 0;
2630 }
2631
2632 static void arcmsr_wait_firmware_ready(struct AdapterControlBlock *acb)
2633 {
2634 uint32_t firmware_state = 0;
2635 switch (acb->adapter_type) {
2636
2637 case ACB_ADAPTER_TYPE_A: {
2638 struct MessageUnit_A __iomem *reg = acb->pmuA;
2639 do {
2640 firmware_state = readl(&reg->outbound_msgaddr1);
2641 } while ((firmware_state & ARCMSR_OUTBOUND_MESG1_FIRMWARE_OK) == 0);
2642 }
2643 break;
2644
2645 case ACB_ADAPTER_TYPE_B: {
2646 struct MessageUnit_B *reg = acb->pmuB;
2647 do {
2648 firmware_state = readl(reg->iop2drv_doorbell);
2649 } while ((firmware_state & ARCMSR_MESSAGE_FIRMWARE_OK) == 0);
2650 writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT, reg->drv2iop_doorbell);
2651 }
2652 break;
2653 case ACB_ADAPTER_TYPE_C: {
2654 struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
2655 do {
2656 firmware_state = readl(&reg->outbound_msgaddr1);
2657 } while ((firmware_state & ARCMSR_HBCMU_MESSAGE_FIRMWARE_OK) == 0);
2658 }
2659 }
2660 }
2661
2662 static void arcmsr_request_hba_device_map(struct AdapterControlBlock *acb)
2663 {
2664 struct MessageUnit_A __iomem *reg = acb->pmuA;
2665 if (unlikely(atomic_read(&acb->rq_map_token) == 0) || ((acb->acb_flags & ACB_F_BUS_RESET) != 0 ) || ((acb->acb_flags & ACB_F_ABORT) != 0 )){
2666 return;
2667 } else {
2668 acb->fw_flag = FW_NORMAL;
2669 if (atomic_read(&acb->ante_token_value) == atomic_read(&acb->rq_map_token)){
2670 atomic_set(&acb->rq_map_token, 16);
2671 }
2672 atomic_set(&acb->ante_token_value, atomic_read(&acb->rq_map_token));
2673 if (atomic_dec_and_test(&acb->rq_map_token))
2674 return;
2675 writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
2676 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2677 }
2678 return;
2679 }
2680
2681 static void arcmsr_request_hbb_device_map(struct AdapterControlBlock *acb)
2682 {
2683 struct MessageUnit_B __iomem *reg = acb->pmuB;
2684 if (unlikely(atomic_read(&acb->rq_map_token) == 0) || ((acb->acb_flags & ACB_F_BUS_RESET) != 0 ) || ((acb->acb_flags & ACB_F_ABORT) != 0 )){
2685 return;
2686 } else {
2687 acb->fw_flag = FW_NORMAL;
2688 if (atomic_read(&acb->ante_token_value) == atomic_read(&acb->rq_map_token)) {
2689 atomic_set(&acb->rq_map_token,16);
2690 }
2691 atomic_set(&acb->ante_token_value, atomic_read(&acb->rq_map_token));
2692 if(atomic_dec_and_test(&acb->rq_map_token))
2693 return;
2694 writel(ARCMSR_MESSAGE_GET_CONFIG, reg->drv2iop_doorbell);
2695 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2696 }
2697 return;
2698 }
2699
2700 static void arcmsr_request_hbc_device_map(struct AdapterControlBlock *acb)
2701 {
2702 struct MessageUnit_C __iomem *reg = acb->pmuC;
2703 if (unlikely(atomic_read(&acb->rq_map_token) == 0) || ((acb->acb_flags & ACB_F_BUS_RESET) != 0) || ((acb->acb_flags & ACB_F_ABORT) != 0)) {
2704 return;
2705 } else {
2706 acb->fw_flag = FW_NORMAL;
2707 if (atomic_read(&acb->ante_token_value) == atomic_read(&acb->rq_map_token)) {
2708 atomic_set(&acb->rq_map_token, 16);
2709 }
2710 atomic_set(&acb->ante_token_value, atomic_read(&acb->rq_map_token));
2711 if (atomic_dec_and_test(&acb->rq_map_token))
2712 return;
2713 writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
2714 writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
2715 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2716 }
2717 return;
2718 }
2719
2720 static void arcmsr_request_device_map(unsigned long pacb)
2721 {
2722 struct AdapterControlBlock *acb = (struct AdapterControlBlock *)pacb;
2723 switch (acb->adapter_type) {
2724 case ACB_ADAPTER_TYPE_A: {
2725 arcmsr_request_hba_device_map(acb);
2726 }
2727 break;
2728 case ACB_ADAPTER_TYPE_B: {
2729 arcmsr_request_hbb_device_map(acb);
2730 }
2731 break;
2732 case ACB_ADAPTER_TYPE_C: {
2733 arcmsr_request_hbc_device_map(acb);
2734 }
2735 }
2736 }
2737
2738 static void arcmsr_start_hba_bgrb(struct AdapterControlBlock *acb)
2739 {
2740 struct MessageUnit_A __iomem *reg = acb->pmuA;
2741 acb->acb_flags |= ACB_F_MSG_START_BGRB;
2742 writel(ARCMSR_INBOUND_MESG0_START_BGRB, &reg->inbound_msgaddr0);
2743 if (!arcmsr_hba_wait_msgint_ready(acb)) {
2744 printk(KERN_NOTICE "arcmsr%d: wait 'start adapter background \
2745 rebulid' timeout \n", acb->host->host_no);
2746 }
2747 }
2748
2749 static void arcmsr_start_hbb_bgrb(struct AdapterControlBlock *acb)
2750 {
2751 struct MessageUnit_B *reg = acb->pmuB;
2752 acb->acb_flags |= ACB_F_MSG_START_BGRB;
2753 writel(ARCMSR_MESSAGE_START_BGRB, reg->drv2iop_doorbell);
2754 if (!arcmsr_hbb_wait_msgint_ready(acb)) {
2755 printk(KERN_NOTICE "arcmsr%d: wait 'start adapter background \
2756 rebulid' timeout \n",acb->host->host_no);
2757 }
2758 }
2759
2760 static void arcmsr_start_hbc_bgrb(struct AdapterControlBlock *pACB)
2761 {
2762 struct MessageUnit_C *phbcmu = (struct MessageUnit_C *)pACB->pmuC;
2763 pACB->acb_flags |= ACB_F_MSG_START_BGRB;
2764 writel(ARCMSR_INBOUND_MESG0_START_BGRB, &phbcmu->inbound_msgaddr0);
2765 writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &phbcmu->inbound_doorbell);
2766 if (!arcmsr_hbc_wait_msgint_ready(pACB)) {
2767 printk(KERN_NOTICE "arcmsr%d: wait 'start adapter background \
2768 rebulid' timeout \n", pACB->host->host_no);
2769 }
2770 return;
2771 }
2772 static void arcmsr_start_adapter_bgrb(struct AdapterControlBlock *acb)
2773 {
2774 switch (acb->adapter_type) {
2775 case ACB_ADAPTER_TYPE_A:
2776 arcmsr_start_hba_bgrb(acb);
2777 break;
2778 case ACB_ADAPTER_TYPE_B:
2779 arcmsr_start_hbb_bgrb(acb);
2780 break;
2781 case ACB_ADAPTER_TYPE_C:
2782 arcmsr_start_hbc_bgrb(acb);
2783 }
2784 }
2785
2786 static void arcmsr_clear_doorbell_queue_buffer(struct AdapterControlBlock *acb)
2787 {
2788 switch (acb->adapter_type) {
2789 case ACB_ADAPTER_TYPE_A: {
2790 struct MessageUnit_A __iomem *reg = acb->pmuA;
2791 uint32_t outbound_doorbell;
2792 /* empty doorbell Qbuffer if door bell ringed */
2793 outbound_doorbell = readl(&reg->outbound_doorbell);
2794 /*clear doorbell interrupt */
2795 writel(outbound_doorbell, &reg->outbound_doorbell);
2796 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, &reg->inbound_doorbell);
2797 }
2798 break;
2799
2800 case ACB_ADAPTER_TYPE_B: {
2801 struct MessageUnit_B *reg = acb->pmuB;
2802 /*clear interrupt and message state*/
2803 writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN, reg->iop2drv_doorbell);
2804 writel(ARCMSR_DRV2IOP_DATA_READ_OK, reg->drv2iop_doorbell);
2805 /* let IOP know data has been read */
2806 }
2807 break;
2808 case ACB_ADAPTER_TYPE_C: {
2809 struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
2810 uint32_t outbound_doorbell;
2811 /* empty doorbell Qbuffer if door bell ringed */
2812 outbound_doorbell = readl(&reg->outbound_doorbell);
2813 writel(outbound_doorbell, &reg->outbound_doorbell_clear);
2814 writel(ARCMSR_HBCMU_DRV2IOP_DATA_READ_OK, &reg->inbound_doorbell);
2815 }
2816 }
2817 }
2818
2819 static void arcmsr_enable_eoi_mode(struct AdapterControlBlock *acb)
2820 {
2821 switch (acb->adapter_type) {
2822 case ACB_ADAPTER_TYPE_A:
2823 return;
2824 case ACB_ADAPTER_TYPE_B:
2825 {
2826 struct MessageUnit_B *reg = acb->pmuB;
2827 writel(ARCMSR_MESSAGE_ACTIVE_EOI_MODE, reg->drv2iop_doorbell);
2828 if (!arcmsr_hbb_wait_msgint_ready(acb)) {
2829 printk(KERN_NOTICE "ARCMSR IOP enables EOI_MODE TIMEOUT");
2830 return;
2831 }
2832 }
2833 break;
2834 case ACB_ADAPTER_TYPE_C:
2835 return;
2836 }
2837 return;
2838 }
2839
2840 static void arcmsr_hardware_reset(struct AdapterControlBlock *acb)
2841 {
2842 uint8_t value[64];
2843 int i, count = 0;
2844 struct MessageUnit_A __iomem *pmuA = acb->pmuA;
2845 struct MessageUnit_C __iomem *pmuC = acb->pmuC;
2846 u32 temp = 0;
2847 /* backup pci config data */
2848 printk(KERN_NOTICE "arcmsr%d: executing hw bus reset .....\n", acb->host->host_no);
2849 for (i = 0; i < 64; i++) {
2850 pci_read_config_byte(acb->pdev, i, &value[i]);
2851 }
2852 /* hardware reset signal */
2853 if ((acb->dev_id == 0x1680)) {
2854 writel(ARCMSR_ARC1680_BUS_RESET, &pmuA->reserved1[0]);
2855 } else if ((acb->dev_id == 0x1880)) {
2856 do {
2857 count++;
2858 writel(0xF, &pmuC->write_sequence);
2859 writel(0x4, &pmuC->write_sequence);
2860 writel(0xB, &pmuC->write_sequence);
2861 writel(0x2, &pmuC->write_sequence);
2862 writel(0x7, &pmuC->write_sequence);
2863 writel(0xD, &pmuC->write_sequence);
2864 } while ((((temp = readl(&pmuC->host_diagnostic)) | ARCMSR_ARC1880_DiagWrite_ENABLE) == 0) && (count < 5));
2865 writel(ARCMSR_ARC1880_RESET_ADAPTER, &pmuC->host_diagnostic);
2866 } else {
2867 pci_write_config_byte(acb->pdev, 0x84, 0x20);
2868 }
2869 msleep(2000);
2870 /* write back pci config data */
2871 for (i = 0; i < 64; i++) {
2872 pci_write_config_byte(acb->pdev, i, value[i]);
2873 }
2874 msleep(1000);
2875 return;
2876 }
2877 static void arcmsr_iop_init(struct AdapterControlBlock *acb)
2878 {
2879 uint32_t intmask_org;
2880 /* disable all outbound interrupt */
2881 intmask_org = arcmsr_disable_outbound_ints(acb);
2882 arcmsr_wait_firmware_ready(acb);
2883 arcmsr_iop_confirm(acb);
2884 /*start background rebuild*/
2885 arcmsr_start_adapter_bgrb(acb);
2886 /* empty doorbell Qbuffer if door bell ringed */
2887 arcmsr_clear_doorbell_queue_buffer(acb);
2888 arcmsr_enable_eoi_mode(acb);
2889 /* enable outbound Post Queue,outbound doorbell Interrupt */
2890 arcmsr_enable_outbound_ints(acb, intmask_org);
2891 acb->acb_flags |= ACB_F_IOP_INITED;
2892 }
2893
2894 static uint8_t arcmsr_iop_reset(struct AdapterControlBlock *acb)
2895 {
2896 struct CommandControlBlock *ccb;
2897 uint32_t intmask_org;
2898 uint8_t rtnval = 0x00;
2899 int i = 0;
2900 if (atomic_read(&acb->ccboutstandingcount) != 0) {
2901 /* disable all outbound interrupt */
2902 intmask_org = arcmsr_disable_outbound_ints(acb);
2903 /* talk to iop 331 outstanding command aborted */
2904 rtnval = arcmsr_abort_allcmd(acb);
2905 /* clear all outbound posted Q */
2906 arcmsr_done4abort_postqueue(acb);
2907 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
2908 ccb = acb->pccb_pool[i];
2909 if (ccb->startdone == ARCMSR_CCB_START) {
2910 arcmsr_ccb_complete(ccb);
2911 }
2912 }
2913 atomic_set(&acb->ccboutstandingcount, 0);
2914 /* enable all outbound interrupt */
2915 arcmsr_enable_outbound_ints(acb, intmask_org);
2916 return rtnval;
2917 }
2918 return rtnval;
2919 }
2920
2921 static int arcmsr_bus_reset(struct scsi_cmnd *cmd)
2922 {
2923 struct AdapterControlBlock *acb =
2924 (struct AdapterControlBlock *)cmd->device->host->hostdata;
2925 uint32_t intmask_org, outbound_doorbell;
2926 int retry_count = 0;
2927 int rtn = FAILED;
2928 acb = (struct AdapterControlBlock *) cmd->device->host->hostdata;
2929 printk(KERN_ERR "arcmsr: executing bus reset eh.....num_resets = %d, num_aborts = %d \n", acb->num_resets, acb->num_aborts);
2930 acb->num_resets++;
2931
2932 switch(acb->adapter_type){
2933 case ACB_ADAPTER_TYPE_A:{
2934 if (acb->acb_flags & ACB_F_BUS_RESET){
2935 long timeout;
2936 printk(KERN_ERR "arcmsr: there is an bus reset eh proceeding.......\n");
2937 timeout = wait_event_timeout(wait_q, (acb->acb_flags & ACB_F_BUS_RESET) == 0, 220*HZ);
2938 if (timeout) {
2939 return SUCCESS;
2940 }
2941 }
2942 acb->acb_flags |= ACB_F_BUS_RESET;
2943 if (!arcmsr_iop_reset(acb)) {
2944 struct MessageUnit_A __iomem *reg;
2945 reg = acb->pmuA;
2946 arcmsr_hardware_reset(acb);
2947 acb->acb_flags &= ~ACB_F_IOP_INITED;
2948 sleep_again:
2949 arcmsr_sleep_for_bus_reset(cmd);
2950 if ((readl(&reg->outbound_msgaddr1) & ARCMSR_OUTBOUND_MESG1_FIRMWARE_OK) == 0) {
2951 printk(KERN_ERR "arcmsr%d: waiting for hw bus reset return, retry=%d \n", acb->host->host_no, retry_count);
2952 if (retry_count > retrycount) {
2953 acb->fw_flag = FW_DEADLOCK;
2954 printk(KERN_ERR "arcmsr%d: waiting for hw bus reset return, RETRY TERMINATED!! \n", acb->host->host_no);
2955 return FAILED;
2956 }
2957 retry_count++;
2958 goto sleep_again;
2959 }
2960 acb->acb_flags |= ACB_F_IOP_INITED;
2961 /* disable all outbound interrupt */
2962 intmask_org = arcmsr_disable_outbound_ints(acb);
2963 arcmsr_get_firmware_spec(acb);
2964 arcmsr_start_adapter_bgrb(acb);
2965 /* clear Qbuffer if door bell ringed */
2966 outbound_doorbell = readl(&reg->outbound_doorbell);
2967 writel(outbound_doorbell, &reg->outbound_doorbell); /*clear interrupt */
2968 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, &reg->inbound_doorbell);
2969 /* enable outbound Post Queue,outbound doorbell Interrupt */
2970 arcmsr_enable_outbound_ints(acb, intmask_org);
2971 atomic_set(&acb->rq_map_token, 16);
2972 atomic_set(&acb->ante_token_value, 16);
2973 acb->fw_flag = FW_NORMAL;
2974 init_timer(&acb->eternal_timer);
2975 acb->eternal_timer.expires = jiffies + msecs_to_jiffies(6*HZ);
2976 acb->eternal_timer.data = (unsigned long) acb;
2977 acb->eternal_timer.function = &arcmsr_request_device_map;
2978 add_timer(&acb->eternal_timer);
2979 acb->acb_flags &= ~ACB_F_BUS_RESET;
2980 rtn = SUCCESS;
2981 printk(KERN_ERR "arcmsr: scsi bus reset eh returns with success\n");
2982 } else {
2983 acb->acb_flags &= ~ACB_F_BUS_RESET;
2984 if (atomic_read(&acb->rq_map_token) == 0) {
2985 atomic_set(&acb->rq_map_token, 16);
2986 atomic_set(&acb->ante_token_value, 16);
2987 acb->fw_flag = FW_NORMAL;
2988 init_timer(&acb->eternal_timer);
2989 acb->eternal_timer.expires = jiffies + msecs_to_jiffies(6*HZ);
2990 acb->eternal_timer.data = (unsigned long) acb;
2991 acb->eternal_timer.function = &arcmsr_request_device_map;
2992 add_timer(&acb->eternal_timer);
2993 } else {
2994 atomic_set(&acb->rq_map_token, 16);
2995 atomic_set(&acb->ante_token_value, 16);
2996 acb->fw_flag = FW_NORMAL;
2997 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6*HZ));
2998 }
2999 rtn = SUCCESS;
3000 }
3001 break;
3002 }
3003 case ACB_ADAPTER_TYPE_B:{
3004 acb->acb_flags |= ACB_F_BUS_RESET;
3005 if (!arcmsr_iop_reset(acb)) {
3006 acb->acb_flags &= ~ACB_F_BUS_RESET;
3007 rtn = FAILED;
3008 } else {
3009 acb->acb_flags &= ~ACB_F_BUS_RESET;
3010 if (atomic_read(&acb->rq_map_token) == 0) {
3011 atomic_set(&acb->rq_map_token, 16);
3012 atomic_set(&acb->ante_token_value, 16);
3013 acb->fw_flag = FW_NORMAL;
3014 init_timer(&acb->eternal_timer);
3015 acb->eternal_timer.expires = jiffies + msecs_to_jiffies(6*HZ);
3016 acb->eternal_timer.data = (unsigned long) acb;
3017 acb->eternal_timer.function = &arcmsr_request_device_map;
3018 add_timer(&acb->eternal_timer);
3019 } else {
3020 atomic_set(&acb->rq_map_token, 16);
3021 atomic_set(&acb->ante_token_value, 16);
3022 acb->fw_flag = FW_NORMAL;
3023 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6*HZ));
3024 }
3025 rtn = SUCCESS;
3026 }
3027 break;
3028 }
3029 case ACB_ADAPTER_TYPE_C:{
3030 if (acb->acb_flags & ACB_F_BUS_RESET) {
3031 long timeout;
3032 printk(KERN_ERR "arcmsr: there is an bus reset eh proceeding.......\n");
3033 timeout = wait_event_timeout(wait_q, (acb->acb_flags & ACB_F_BUS_RESET) == 0, 220*HZ);
3034 if (timeout) {
3035 return SUCCESS;
3036 }
3037 }
3038 acb->acb_flags |= ACB_F_BUS_RESET;
3039 if (!arcmsr_iop_reset(acb)) {
3040 struct MessageUnit_C __iomem *reg;
3041 reg = acb->pmuC;
3042 arcmsr_hardware_reset(acb);
3043 acb->acb_flags &= ~ACB_F_IOP_INITED;
3044 sleep:
3045 arcmsr_sleep_for_bus_reset(cmd);
3046 if ((readl(&reg->host_diagnostic) & 0x04) != 0) {
3047 printk(KERN_ERR "arcmsr%d: waiting for hw bus reset return, retry=%d \n", acb->host->host_no, retry_count);
3048 if (retry_count > retrycount) {
3049 acb->fw_flag = FW_DEADLOCK;
3050 printk(KERN_ERR "arcmsr%d: waiting for hw bus reset return, RETRY TERMINATED!! \n", acb->host->host_no);
3051 return FAILED;
3052 }
3053 retry_count++;
3054 goto sleep;
3055 }
3056 acb->acb_flags |= ACB_F_IOP_INITED;
3057 /* disable all outbound interrupt */
3058 intmask_org = arcmsr_disable_outbound_ints(acb);
3059 arcmsr_get_firmware_spec(acb);
3060 arcmsr_start_adapter_bgrb(acb);
3061 /* clear Qbuffer if door bell ringed */
3062 outbound_doorbell = readl(&reg->outbound_doorbell);
3063 writel(outbound_doorbell, &reg->outbound_doorbell_clear); /*clear interrupt */
3064 writel(ARCMSR_HBCMU_DRV2IOP_DATA_READ_OK, &reg->inbound_doorbell);
3065 /* enable outbound Post Queue,outbound doorbell Interrupt */
3066 arcmsr_enable_outbound_ints(acb, intmask_org);
3067 atomic_set(&acb->rq_map_token, 16);
3068 atomic_set(&acb->ante_token_value, 16);
3069 acb->fw_flag = FW_NORMAL;
3070 init_timer(&acb->eternal_timer);
3071 acb->eternal_timer.expires = jiffies + msecs_to_jiffies(6 * HZ);
3072 acb->eternal_timer.data = (unsigned long) acb;
3073 acb->eternal_timer.function = &arcmsr_request_device_map;
3074 add_timer(&acb->eternal_timer);
3075 acb->acb_flags &= ~ACB_F_BUS_RESET;
3076 rtn = SUCCESS;
3077 printk(KERN_ERR "arcmsr: scsi bus reset eh returns with success\n");
3078 } else {
3079 acb->acb_flags &= ~ACB_F_BUS_RESET;
3080 if (atomic_read(&acb->rq_map_token) == 0) {
3081 atomic_set(&acb->rq_map_token, 16);
3082 atomic_set(&acb->ante_token_value, 16);
3083 acb->fw_flag = FW_NORMAL;
3084 init_timer(&acb->eternal_timer);
3085 acb->eternal_timer.expires = jiffies + msecs_to_jiffies(6*HZ);
3086 acb->eternal_timer.data = (unsigned long) acb;
3087 acb->eternal_timer.function = &arcmsr_request_device_map;
3088 add_timer(&acb->eternal_timer);
3089 } else {
3090 atomic_set(&acb->rq_map_token, 16);
3091 atomic_set(&acb->ante_token_value, 16);
3092 acb->fw_flag = FW_NORMAL;
3093 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6*HZ));
3094 }
3095 rtn = SUCCESS;
3096 }
3097 break;
3098 }
3099 }
3100 return rtn;
3101 }
3102
3103 static int arcmsr_abort_one_cmd(struct AdapterControlBlock *acb,
3104 struct CommandControlBlock *ccb)
3105 {
3106 int rtn;
3107 rtn = arcmsr_polling_ccbdone(acb, ccb);
3108 return rtn;
3109 }
3110
3111 static int arcmsr_abort(struct scsi_cmnd *cmd)
3112 {
3113 struct AdapterControlBlock *acb =
3114 (struct AdapterControlBlock *)cmd->device->host->hostdata;
3115 int i = 0;
3116 int rtn = FAILED;
3117 printk(KERN_NOTICE
3118 "arcmsr%d: abort device command of scsi id = %d lun = %d \n",
3119 acb->host->host_no, cmd->device->id, cmd->device->lun);
3120 acb->acb_flags |= ACB_F_ABORT;
3121 acb->num_aborts++;
3122 /*
3123 ************************************************
3124 ** the all interrupt service routine is locked
3125 ** we need to handle it as soon as possible and exit
3126 ************************************************
3127 */
3128 if (!atomic_read(&acb->ccboutstandingcount))
3129 return rtn;
3130
3131 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
3132 struct CommandControlBlock *ccb = acb->pccb_pool[i];
3133 if (ccb->startdone == ARCMSR_CCB_START && ccb->pcmd == cmd) {
3134 ccb->startdone = ARCMSR_CCB_ABORTED;
3135 rtn = arcmsr_abort_one_cmd(acb, ccb);
3136 break;
3137 }
3138 }
3139 acb->acb_flags &= ~ACB_F_ABORT;
3140 return rtn;
3141 }
3142
3143 static const char *arcmsr_info(struct Scsi_Host *host)
3144 {
3145 struct AdapterControlBlock *acb =
3146 (struct AdapterControlBlock *) host->hostdata;
3147 static char buf[256];
3148 char *type;
3149 int raid6 = 1;
3150 switch (acb->pdev->device) {
3151 case PCI_DEVICE_ID_ARECA_1110:
3152 case PCI_DEVICE_ID_ARECA_1200:
3153 case PCI_DEVICE_ID_ARECA_1202:
3154 case PCI_DEVICE_ID_ARECA_1210:
3155 raid6 = 0;
3156 /*FALLTHRU*/
3157 case PCI_DEVICE_ID_ARECA_1120:
3158 case PCI_DEVICE_ID_ARECA_1130:
3159 case PCI_DEVICE_ID_ARECA_1160:
3160 case PCI_DEVICE_ID_ARECA_1170:
3161 case PCI_DEVICE_ID_ARECA_1201:
3162 case PCI_DEVICE_ID_ARECA_1220:
3163 case PCI_DEVICE_ID_ARECA_1230:
3164 case PCI_DEVICE_ID_ARECA_1260:
3165 case PCI_DEVICE_ID_ARECA_1270:
3166 case PCI_DEVICE_ID_ARECA_1280:
3167 type = "SATA";
3168 break;
3169 case PCI_DEVICE_ID_ARECA_1380:
3170 case PCI_DEVICE_ID_ARECA_1381:
3171 case PCI_DEVICE_ID_ARECA_1680:
3172 case PCI_DEVICE_ID_ARECA_1681:
3173 case PCI_DEVICE_ID_ARECA_1880:
3174 type = "SAS";
3175 break;
3176 default:
3177 type = "X-TYPE";
3178 break;
3179 }
3180 sprintf(buf, "Areca %s Host Adapter RAID Controller%s\n %s",
3181 type, raid6 ? "( RAID6 capable)" : "",
3182 ARCMSR_DRIVER_VERSION);
3183 return buf;
3184 }
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree