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x86/uv: Fix uninitialized spinlocks
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / scsi / arcmsr / arcmsr_hba.c
blobf980600f78a8422555f6420d3fd2a8748a713a4e
1 /*
2 *******************************************************************************
3 ** O.S : Linux
4 ** FILE NAME : arcmsr_hba.c
5 ** BY : Nick Cheng
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
79 #define ARCMSR_SLEEPTIME 10
80 #define ARCMSR_RETRYCOUNT 12
81
82 wait_queue_head_t wait_q;
83 static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb,
84 struct scsi_cmnd *cmd);
85 static int arcmsr_iop_confirm(struct AdapterControlBlock *acb);
86 static int arcmsr_abort(struct scsi_cmnd *);
87 static int arcmsr_bus_reset(struct scsi_cmnd *);
88 static int arcmsr_bios_param(struct scsi_device *sdev,
89 struct block_device *bdev, sector_t capacity, int *info);
90 static int arcmsr_queue_command(struct Scsi_Host *h, struct scsi_cmnd *cmd);
91 static int arcmsr_probe(struct pci_dev *pdev,
92 const struct pci_device_id *id);
93 static void arcmsr_remove(struct pci_dev *pdev);
94 static void arcmsr_shutdown(struct pci_dev *pdev);
95 static void arcmsr_iop_init(struct AdapterControlBlock *acb);
96 static void arcmsr_free_ccb_pool(struct AdapterControlBlock *acb);
97 static u32 arcmsr_disable_outbound_ints(struct AdapterControlBlock *acb);
98 static void arcmsr_stop_adapter_bgrb(struct AdapterControlBlock *acb);
99 static void arcmsr_flush_hba_cache(struct AdapterControlBlock *acb);
100 static void arcmsr_flush_hbb_cache(struct AdapterControlBlock *acb);
101 static void arcmsr_request_device_map(unsigned long pacb);
102 static void arcmsr_request_hba_device_map(struct AdapterControlBlock *acb);
103 static void arcmsr_request_hbb_device_map(struct AdapterControlBlock *acb);
104 static void arcmsr_request_hbc_device_map(struct AdapterControlBlock *acb);
105 static void arcmsr_message_isr_bh_fn(struct work_struct *work);
106 static bool arcmsr_get_firmware_spec(struct AdapterControlBlock *acb);
107 static void arcmsr_start_adapter_bgrb(struct AdapterControlBlock *acb);
108 static void arcmsr_hbc_message_isr(struct AdapterControlBlock *pACB);
109 static void arcmsr_hardware_reset(struct AdapterControlBlock *acb);
110 static const char *arcmsr_info(struct Scsi_Host *);
111 static irqreturn_t arcmsr_interrupt(struct AdapterControlBlock *acb);
112 static int arcmsr_adjust_disk_queue_depth(struct scsi_device *sdev,
113 int queue_depth, int reason)
114 {
115 if (reason != SCSI_QDEPTH_DEFAULT)
116 return -EOPNOTSUPP;
117
118 if (queue_depth > ARCMSR_MAX_CMD_PERLUN)
119 queue_depth = ARCMSR_MAX_CMD_PERLUN;
120 scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG, queue_depth);
121 return queue_depth;
122 }
123
124 static struct scsi_host_template arcmsr_scsi_host_template = {
125 .module = THIS_MODULE,
126 .name = "ARCMSR ARECA SATA/SAS RAID Controller"
127 ARCMSR_DRIVER_VERSION,
128 .info = arcmsr_info,
129 .queuecommand = arcmsr_queue_command,
130 .eh_abort_handler = arcmsr_abort,
131 .eh_bus_reset_handler = arcmsr_bus_reset,
132 .bios_param = arcmsr_bios_param,
133 .change_queue_depth = arcmsr_adjust_disk_queue_depth,
134 .can_queue = ARCMSR_MAX_FREECCB_NUM,
135 .this_id = ARCMSR_SCSI_INITIATOR_ID,
136 .sg_tablesize = ARCMSR_DEFAULT_SG_ENTRIES,
137 .max_sectors = ARCMSR_MAX_XFER_SECTORS_C,
138 .cmd_per_lun = ARCMSR_MAX_CMD_PERLUN,
139 .use_clustering = ENABLE_CLUSTERING,
140 .shost_attrs = arcmsr_host_attrs,
141 };
142 static struct pci_device_id arcmsr_device_id_table[] = {
143 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1110)},
144 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1120)},
145 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1130)},
146 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1160)},
147 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1170)},
148 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1200)},
149 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1201)},
150 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1202)},
151 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1210)},
152 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1220)},
153 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1230)},
154 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1260)},
155 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1270)},
156 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1280)},
157 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1380)},
158 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1381)},
159 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1680)},
160 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1681)},
161 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1880)},
162 {0, 0}, /* Terminating entry */
163 };
164 MODULE_DEVICE_TABLE(pci, arcmsr_device_id_table);
165 static struct pci_driver arcmsr_pci_driver = {
166 .name = "arcmsr",
167 .id_table = arcmsr_device_id_table,
168 .probe = arcmsr_probe,
169 .remove = arcmsr_remove,
170 .shutdown = arcmsr_shutdown,
171 };
172 /*
173 ****************************************************************************
174 ****************************************************************************
175 */
176
177 static void arcmsr_free_hbb_mu(struct AdapterControlBlock *acb)
178 {
179 switch (acb->adapter_type) {
180 case ACB_ADAPTER_TYPE_A:
181 case ACB_ADAPTER_TYPE_C:
182 break;
183 case ACB_ADAPTER_TYPE_B:{
184 dma_free_coherent(&acb->pdev->dev,
185 sizeof(struct MessageUnit_B),
186 acb->pmuB, acb->dma_coherent_handle_hbb_mu);
187 }
188 }
189 }
190
191 static bool arcmsr_remap_pciregion(struct AdapterControlBlock *acb)
192 {
193 struct pci_dev *pdev = acb->pdev;
194 switch (acb->adapter_type){
195 case ACB_ADAPTER_TYPE_A:{
196 acb->pmuA = ioremap(pci_resource_start(pdev,0), pci_resource_len(pdev,0));
197 if (!acb->pmuA) {
198 printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n", acb->host->host_no);
199 return false;
200 }
201 break;
202 }
203 case ACB_ADAPTER_TYPE_B:{
204 void __iomem *mem_base0, *mem_base1;
205 mem_base0 = ioremap(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0));
206 if (!mem_base0) {
207 printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n", acb->host->host_no);
208 return false;
209 }
210 mem_base1 = ioremap(pci_resource_start(pdev, 2), pci_resource_len(pdev, 2));
211 if (!mem_base1) {
212 iounmap(mem_base0);
213 printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n", acb->host->host_no);
214 return false;
215 }
216 acb->mem_base0 = mem_base0;
217 acb->mem_base1 = mem_base1;
218 break;
219 }
220 case ACB_ADAPTER_TYPE_C:{
221 acb->pmuC = ioremap_nocache(pci_resource_start(pdev, 1), pci_resource_len(pdev, 1));
222 if (!acb->pmuC) {
223 printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n", acb->host->host_no);
224 return false;
225 }
226 if (readl(&acb->pmuC->outbound_doorbell) & ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE) {
227 writel(ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE_DOORBELL_CLEAR, &acb->pmuC->outbound_doorbell_clear);/*clear interrupt*/
228 return true;
229 }
230 break;
231 }
232 }
233 return true;
234 }
235
236 static void arcmsr_unmap_pciregion(struct AdapterControlBlock *acb)
237 {
238 switch (acb->adapter_type) {
239 case ACB_ADAPTER_TYPE_A:{
240 iounmap(acb->pmuA);
241 }
242 break;
243 case ACB_ADAPTER_TYPE_B:{
244 iounmap(acb->mem_base0);
245 iounmap(acb->mem_base1);
246 }
247
248 break;
249 case ACB_ADAPTER_TYPE_C:{
250 iounmap(acb->pmuC);
251 }
252 }
253 }
254
255 static irqreturn_t arcmsr_do_interrupt(int irq, void *dev_id)
256 {
257 irqreturn_t handle_state;
258 struct AdapterControlBlock *acb = dev_id;
259
260 handle_state = arcmsr_interrupt(acb);
261 return handle_state;
262 }
263
264 static int arcmsr_bios_param(struct scsi_device *sdev,
265 struct block_device *bdev, sector_t capacity, int *geom)
266 {
267 int ret, heads, sectors, cylinders, total_capacity;
268 unsigned char *buffer;/* return copy of block device's partition table */
269
270 buffer = scsi_bios_ptable(bdev);
271 if (buffer) {
272 ret = scsi_partsize(buffer, capacity, &geom[2], &geom[0], &geom[1]);
273 kfree(buffer);
274 if (ret != -1)
275 return ret;
276 }
277 total_capacity = capacity;
278 heads = 64;
279 sectors = 32;
280 cylinders = total_capacity / (heads * sectors);
281 if (cylinders > 1024) {
282 heads = 255;
283 sectors = 63;
284 cylinders = total_capacity / (heads * sectors);
285 }
286 geom[0] = heads;
287 geom[1] = sectors;
288 geom[2] = cylinders;
289 return 0;
290 }
291
292 static void arcmsr_define_adapter_type(struct AdapterControlBlock *acb)
293 {
294 struct pci_dev *pdev = acb->pdev;
295 u16 dev_id;
296 pci_read_config_word(pdev, PCI_DEVICE_ID, &dev_id);
297 acb->dev_id = dev_id;
298 switch (dev_id) {
299 case 0x1880: {
300 acb->adapter_type = ACB_ADAPTER_TYPE_C;
301 }
302 break;
303 case 0x1201: {
304 acb->adapter_type = ACB_ADAPTER_TYPE_B;
305 }
306 break;
307
308 default: acb->adapter_type = ACB_ADAPTER_TYPE_A;
309 }
310 }
311
312 static uint8_t arcmsr_hba_wait_msgint_ready(struct AdapterControlBlock *acb)
313 {
314 struct MessageUnit_A __iomem *reg = acb->pmuA;
315 int i;
316
317 for (i = 0; i < 2000; i++) {
318 if (readl(&reg->outbound_intstatus) &
319 ARCMSR_MU_OUTBOUND_MESSAGE0_INT) {
320 writel(ARCMSR_MU_OUTBOUND_MESSAGE0_INT,
321 &reg->outbound_intstatus);
322 return true;
323 }
324 msleep(10);
325 } /* max 20 seconds */
326
327 return false;
328 }
329
330 static uint8_t arcmsr_hbb_wait_msgint_ready(struct AdapterControlBlock *acb)
331 {
332 struct MessageUnit_B *reg = acb->pmuB;
333 int i;
334
335 for (i = 0; i < 2000; i++) {
336 if (readl(reg->iop2drv_doorbell)
337 & ARCMSR_IOP2DRV_MESSAGE_CMD_DONE) {
338 writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN,
339 reg->iop2drv_doorbell);
340 writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT,
341 reg->drv2iop_doorbell);
342 return true;
343 }
344 msleep(10);
345 } /* max 20 seconds */
346
347 return false;
348 }
349
350 static uint8_t arcmsr_hbc_wait_msgint_ready(struct AdapterControlBlock *pACB)
351 {
352 struct MessageUnit_C *phbcmu = (struct MessageUnit_C *)pACB->pmuC;
353 int i;
354
355 for (i = 0; i < 2000; i++) {
356 if (readl(&phbcmu->outbound_doorbell)
357 & ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE) {
358 writel(ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE_DOORBELL_CLEAR,
359 &phbcmu->outbound_doorbell_clear); /*clear interrupt*/
360 return true;
361 }
362 msleep(10);
363 } /* max 20 seconds */
364
365 return false;
366 }
367
368 static void arcmsr_flush_hba_cache(struct AdapterControlBlock *acb)
369 {
370 struct MessageUnit_A __iomem *reg = acb->pmuA;
371 int retry_count = 30;
372 writel(ARCMSR_INBOUND_MESG0_FLUSH_CACHE, &reg->inbound_msgaddr0);
373 do {
374 if (arcmsr_hba_wait_msgint_ready(acb))
375 break;
376 else {
377 retry_count--;
378 printk(KERN_NOTICE "arcmsr%d: wait 'flush adapter cache' \
379 timeout, retry count down = %d \n", acb->host->host_no, retry_count);
380 }
381 } while (retry_count != 0);
382 }
383
384 static void arcmsr_flush_hbb_cache(struct AdapterControlBlock *acb)
385 {
386 struct MessageUnit_B *reg = acb->pmuB;
387 int retry_count = 30;
388 writel(ARCMSR_MESSAGE_FLUSH_CACHE, reg->drv2iop_doorbell);
389 do {
390 if (arcmsr_hbb_wait_msgint_ready(acb))
391 break;
392 else {
393 retry_count--;
394 printk(KERN_NOTICE "arcmsr%d: wait 'flush adapter cache' \
395 timeout,retry count down = %d \n", acb->host->host_no, retry_count);
396 }
397 } while (retry_count != 0);
398 }
399
400 static void arcmsr_flush_hbc_cache(struct AdapterControlBlock *pACB)
401 {
402 struct MessageUnit_C *reg = (struct MessageUnit_C *)pACB->pmuC;
403 int retry_count = 30;/* enlarge wait flush adapter cache time: 10 minute */
404 writel(ARCMSR_INBOUND_MESG0_FLUSH_CACHE, &reg->inbound_msgaddr0);
405 writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
406 do {
407 if (arcmsr_hbc_wait_msgint_ready(pACB)) {
408 break;
409 } else {
410 retry_count--;
411 printk(KERN_NOTICE "arcmsr%d: wait 'flush adapter cache' \
412 timeout,retry count down = %d \n", pACB->host->host_no, retry_count);
413 }
414 } while (retry_count != 0);
415 return;
416 }
417 static void arcmsr_flush_adapter_cache(struct AdapterControlBlock *acb)
418 {
419 switch (acb->adapter_type) {
420
421 case ACB_ADAPTER_TYPE_A: {
422 arcmsr_flush_hba_cache(acb);
423 }
424 break;
425
426 case ACB_ADAPTER_TYPE_B: {
427 arcmsr_flush_hbb_cache(acb);
428 }
429 break;
430 case ACB_ADAPTER_TYPE_C: {
431 arcmsr_flush_hbc_cache(acb);
432 }
433 }
434 }
435
436 static int arcmsr_alloc_ccb_pool(struct AdapterControlBlock *acb)
437 {
438 struct pci_dev *pdev = acb->pdev;
439 void *dma_coherent;
440 dma_addr_t dma_coherent_handle;
441 struct CommandControlBlock *ccb_tmp;
442 int i = 0, j = 0;
443 dma_addr_t cdb_phyaddr;
444 unsigned long roundup_ccbsize;
445 unsigned long max_xfer_len;
446 unsigned long max_sg_entrys;
447 uint32_t firm_config_version;
448
449 for (i = 0; i < ARCMSR_MAX_TARGETID; i++)
450 for (j = 0; j < ARCMSR_MAX_TARGETLUN; j++)
451 acb->devstate[i][j] = ARECA_RAID_GONE;
452
453 max_xfer_len = ARCMSR_MAX_XFER_LEN;
454 max_sg_entrys = ARCMSR_DEFAULT_SG_ENTRIES;
455 firm_config_version = acb->firm_cfg_version;
456 if((firm_config_version & 0xFF) >= 3){
457 max_xfer_len = (ARCMSR_CDB_SG_PAGE_LENGTH << ((firm_config_version >> 8) & 0xFF)) * 1024;/* max 4M byte */
458 max_sg_entrys = (max_xfer_len/4096);
459 }
460 acb->host->max_sectors = max_xfer_len/512;
461 acb->host->sg_tablesize = max_sg_entrys;
462 roundup_ccbsize = roundup(sizeof(struct CommandControlBlock) + (max_sg_entrys - 1) * sizeof(struct SG64ENTRY), 32);
463 acb->uncache_size = roundup_ccbsize * ARCMSR_MAX_FREECCB_NUM;
464 dma_coherent = dma_alloc_coherent(&pdev->dev, acb->uncache_size, &dma_coherent_handle, GFP_KERNEL);
465 if(!dma_coherent){
466 printk(KERN_NOTICE "arcmsr%d: dma_alloc_coherent got error\n", acb->host->host_no);
467 return -ENOMEM;
468 }
469 acb->dma_coherent = dma_coherent;
470 acb->dma_coherent_handle = dma_coherent_handle;
471 memset(dma_coherent, 0, acb->uncache_size);
472 ccb_tmp = dma_coherent;
473 acb->vir2phy_offset = (unsigned long)dma_coherent - (unsigned long)dma_coherent_handle;
474 for(i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++){
475 cdb_phyaddr = dma_coherent_handle + offsetof(struct CommandControlBlock, arcmsr_cdb);
476 ccb_tmp->cdb_phyaddr_pattern = ((acb->adapter_type == ACB_ADAPTER_TYPE_C) ? cdb_phyaddr : (cdb_phyaddr >> 5));
477 acb->pccb_pool[i] = ccb_tmp;
478 ccb_tmp->acb = acb;
479 INIT_LIST_HEAD(&ccb_tmp->list);
480 list_add_tail(&ccb_tmp->list, &acb->ccb_free_list);
481 ccb_tmp = (struct CommandControlBlock *)((unsigned long)ccb_tmp + roundup_ccbsize);
482 dma_coherent_handle = dma_coherent_handle + roundup_ccbsize;
483 }
484 return 0;
485 }
486
487 static void arcmsr_message_isr_bh_fn(struct work_struct *work)
488 {
489 struct AdapterControlBlock *acb = container_of(work,struct AdapterControlBlock, arcmsr_do_message_isr_bh);
490 switch (acb->adapter_type) {
491 case ACB_ADAPTER_TYPE_A: {
492
493 struct MessageUnit_A __iomem *reg = acb->pmuA;
494 char *acb_dev_map = (char *)acb->device_map;
495 uint32_t __iomem *signature = (uint32_t __iomem*) (&reg->message_rwbuffer[0]);
496 char __iomem *devicemap = (char __iomem*) (&reg->message_rwbuffer[21]);
497 int target, lun;
498 struct scsi_device *psdev;
499 char diff;
500
501 atomic_inc(&acb->rq_map_token);
502 if (readl(signature) == ARCMSR_SIGNATURE_GET_CONFIG) {
503 for(target = 0; target < ARCMSR_MAX_TARGETID -1; target++) {
504 diff = (*acb_dev_map)^readb(devicemap);
505 if (diff != 0) {
506 char temp;
507 *acb_dev_map = readb(devicemap);
508 temp =*acb_dev_map;
509 for(lun = 0; lun < ARCMSR_MAX_TARGETLUN; lun++) {
510 if((temp & 0x01)==1 && (diff & 0x01) == 1) {
511 scsi_add_device(acb->host, 0, target, lun);
512 }else if((temp & 0x01) == 0 && (diff & 0x01) == 1) {
513 psdev = scsi_device_lookup(acb->host, 0, target, lun);
514 if (psdev != NULL ) {
515 scsi_remove_device(psdev);
516 scsi_device_put(psdev);
517 }
518 }
519 temp >>= 1;
520 diff >>= 1;
521 }
522 }
523 devicemap++;
524 acb_dev_map++;
525 }
526 }
527 break;
528 }
529
530 case ACB_ADAPTER_TYPE_B: {
531 struct MessageUnit_B *reg = acb->pmuB;
532 char *acb_dev_map = (char *)acb->device_map;
533 uint32_t __iomem *signature = (uint32_t __iomem*)(&reg->message_rwbuffer[0]);
534 char __iomem *devicemap = (char __iomem*)(&reg->message_rwbuffer[21]);
535 int target, lun;
536 struct scsi_device *psdev;
537 char diff;
538
539 atomic_inc(&acb->rq_map_token);
540 if (readl(signature) == ARCMSR_SIGNATURE_GET_CONFIG) {
541 for(target = 0; target < ARCMSR_MAX_TARGETID -1; target++) {
542 diff = (*acb_dev_map)^readb(devicemap);
543 if (diff != 0) {
544 char temp;
545 *acb_dev_map = readb(devicemap);
546 temp =*acb_dev_map;
547 for(lun = 0; lun < ARCMSR_MAX_TARGETLUN; lun++) {
548 if((temp & 0x01)==1 && (diff & 0x01) == 1) {
549 scsi_add_device(acb->host, 0, target, lun);
550 }else if((temp & 0x01) == 0 && (diff & 0x01) == 1) {
551 psdev = scsi_device_lookup(acb->host, 0, target, lun);
552 if (psdev != NULL ) {
553 scsi_remove_device(psdev);
554 scsi_device_put(psdev);
555 }
556 }
557 temp >>= 1;
558 diff >>= 1;
559 }
560 }
561 devicemap++;
562 acb_dev_map++;
563 }
564 }
565 }
566 break;
567 case ACB_ADAPTER_TYPE_C: {
568 struct MessageUnit_C *reg = acb->pmuC;
569 char *acb_dev_map = (char *)acb->device_map;
570 uint32_t __iomem *signature = (uint32_t __iomem *)(&reg->msgcode_rwbuffer[0]);
571 char __iomem *devicemap = (char __iomem *)(&reg->msgcode_rwbuffer[21]);
572 int target, lun;
573 struct scsi_device *psdev;
574 char diff;
575
576 atomic_inc(&acb->rq_map_token);
577 if (readl(signature) == ARCMSR_SIGNATURE_GET_CONFIG) {
578 for (target = 0; target < ARCMSR_MAX_TARGETID - 1; target++) {
579 diff = (*acb_dev_map)^readb(devicemap);
580 if (diff != 0) {
581 char temp;
582 *acb_dev_map = readb(devicemap);
583 temp = *acb_dev_map;
584 for (lun = 0; lun < ARCMSR_MAX_TARGETLUN; lun++) {
585 if ((temp & 0x01) == 1 && (diff & 0x01) == 1) {
586 scsi_add_device(acb->host, 0, target, lun);
587 } else if ((temp & 0x01) == 0 && (diff & 0x01) == 1) {
588 psdev = scsi_device_lookup(acb->host, 0, target, lun);
589 if (psdev != NULL) {
590 scsi_remove_device(psdev);
591 scsi_device_put(psdev);
592 }
593 }
594 temp >>= 1;
595 diff >>= 1;
596 }
597 }
598 devicemap++;
599 acb_dev_map++;
600 }
601 }
602 }
603 }
604 }
605
606 static int arcmsr_probe(struct pci_dev *pdev, const struct pci_device_id *id)
607 {
608 struct Scsi_Host *host;
609 struct AdapterControlBlock *acb;
610 uint8_t bus,dev_fun;
611 int error;
612 error = pci_enable_device(pdev);
613 if(error){
614 return -ENODEV;
615 }
616 host = scsi_host_alloc(&arcmsr_scsi_host_template, sizeof(struct AdapterControlBlock));
617 if(!host){
618 goto pci_disable_dev;
619 }
620 error = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
621 if(error){
622 error = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
623 if(error){
624 printk(KERN_WARNING
625 "scsi%d: No suitable DMA mask available\n",
626 host->host_no);
627 goto scsi_host_release;
628 }
629 }
630 init_waitqueue_head(&wait_q);
631 bus = pdev->bus->number;
632 dev_fun = pdev->devfn;
633 acb = (struct AdapterControlBlock *) host->hostdata;
634 memset(acb,0,sizeof(struct AdapterControlBlock));
635 acb->pdev = pdev;
636 acb->host = host;
637 host->max_lun = ARCMSR_MAX_TARGETLUN;
638 host->max_id = ARCMSR_MAX_TARGETID; /*16:8*/
639 host->max_cmd_len = 16; /*this is issue of 64bit LBA ,over 2T byte*/
640 host->can_queue = ARCMSR_MAX_FREECCB_NUM; /* max simultaneous cmds */
641 host->cmd_per_lun = ARCMSR_MAX_CMD_PERLUN;
642 host->this_id = ARCMSR_SCSI_INITIATOR_ID;
643 host->unique_id = (bus << 8) | dev_fun;
644 pci_set_drvdata(pdev, host);
645 pci_set_master(pdev);
646 error = pci_request_regions(pdev, "arcmsr");
647 if(error){
648 goto scsi_host_release;
649 }
650 spin_lock_init(&acb->eh_lock);
651 spin_lock_init(&acb->ccblist_lock);
652 acb->acb_flags |= (ACB_F_MESSAGE_WQBUFFER_CLEARED |
653 ACB_F_MESSAGE_RQBUFFER_CLEARED |
654 ACB_F_MESSAGE_WQBUFFER_READED);
655 acb->acb_flags &= ~ACB_F_SCSISTOPADAPTER;
656 INIT_LIST_HEAD(&acb->ccb_free_list);
657 arcmsr_define_adapter_type(acb);
658 error = arcmsr_remap_pciregion(acb);
659 if(!error){
660 goto pci_release_regs;
661 }
662 error = arcmsr_get_firmware_spec(acb);
663 if(!error){
664 goto unmap_pci_region;
665 }
666 error = arcmsr_alloc_ccb_pool(acb);
667 if(error){
668 goto free_hbb_mu;
669 }
670 arcmsr_iop_init(acb);
671 error = scsi_add_host(host, &pdev->dev);
672 if(error){
673 goto RAID_controller_stop;
674 }
675 error = request_irq(pdev->irq, arcmsr_do_interrupt, IRQF_SHARED, "arcmsr", acb);
676 if(error){
677 goto scsi_host_remove;
678 }
679 host->irq = pdev->irq;
680 scsi_scan_host(host);
681 INIT_WORK(&acb->arcmsr_do_message_isr_bh, arcmsr_message_isr_bh_fn);
682 atomic_set(&acb->rq_map_token, 16);
683 atomic_set(&acb->ante_token_value, 16);
684 acb->fw_flag = FW_NORMAL;
685 init_timer(&acb->eternal_timer);
686 acb->eternal_timer.expires = jiffies + msecs_to_jiffies(6 * HZ);
687 acb->eternal_timer.data = (unsigned long) acb;
688 acb->eternal_timer.function = &arcmsr_request_device_map;
689 add_timer(&acb->eternal_timer);
690 if(arcmsr_alloc_sysfs_attr(acb))
691 goto out_free_sysfs;
692 return 0;
693 out_free_sysfs:
694 scsi_host_remove:
695 scsi_remove_host(host);
696 RAID_controller_stop:
697 arcmsr_stop_adapter_bgrb(acb);
698 arcmsr_flush_adapter_cache(acb);
699 arcmsr_free_ccb_pool(acb);
700 free_hbb_mu:
701 arcmsr_free_hbb_mu(acb);
702 unmap_pci_region:
703 arcmsr_unmap_pciregion(acb);
704 pci_release_regs:
705 pci_release_regions(pdev);
706 scsi_host_release:
707 scsi_host_put(host);
708 pci_disable_dev:
709 pci_disable_device(pdev);
710 return -ENODEV;
711 }
712
713 static uint8_t arcmsr_abort_hba_allcmd(struct AdapterControlBlock *acb)
714 {
715 struct MessageUnit_A __iomem *reg = acb->pmuA;
716 writel(ARCMSR_INBOUND_MESG0_ABORT_CMD, &reg->inbound_msgaddr0);
717 if (!arcmsr_hba_wait_msgint_ready(acb)) {
718 printk(KERN_NOTICE
719 "arcmsr%d: wait 'abort all outstanding command' timeout \n"
720 , acb->host->host_no);
721 return false;
722 }
723 return true;
724 }
725
726 static uint8_t arcmsr_abort_hbb_allcmd(struct AdapterControlBlock *acb)
727 {
728 struct MessageUnit_B *reg = acb->pmuB;
729
730 writel(ARCMSR_MESSAGE_ABORT_CMD, reg->drv2iop_doorbell);
731 if (!arcmsr_hbb_wait_msgint_ready(acb)) {
732 printk(KERN_NOTICE
733 "arcmsr%d: wait 'abort all outstanding command' timeout \n"
734 , acb->host->host_no);
735 return false;
736 }
737 return true;
738 }
739 static uint8_t arcmsr_abort_hbc_allcmd(struct AdapterControlBlock *pACB)
740 {
741 struct MessageUnit_C *reg = (struct MessageUnit_C *)pACB->pmuC;
742 writel(ARCMSR_INBOUND_MESG0_ABORT_CMD, &reg->inbound_msgaddr0);
743 writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
744 if (!arcmsr_hbc_wait_msgint_ready(pACB)) {
745 printk(KERN_NOTICE
746 "arcmsr%d: wait 'abort all outstanding command' timeout \n"
747 , pACB->host->host_no);
748 return false;
749 }
750 return true;
751 }
752 static uint8_t arcmsr_abort_allcmd(struct AdapterControlBlock *acb)
753 {
754 uint8_t rtnval = 0;
755 switch (acb->adapter_type) {
756 case ACB_ADAPTER_TYPE_A: {
757 rtnval = arcmsr_abort_hba_allcmd(acb);
758 }
759 break;
760
761 case ACB_ADAPTER_TYPE_B: {
762 rtnval = arcmsr_abort_hbb_allcmd(acb);
763 }
764 break;
765
766 case ACB_ADAPTER_TYPE_C: {
767 rtnval = arcmsr_abort_hbc_allcmd(acb);
768 }
769 }
770 return rtnval;
771 }
772
773 static bool arcmsr_hbb_enable_driver_mode(struct AdapterControlBlock *pacb)
774 {
775 struct MessageUnit_B *reg = pacb->pmuB;
776 writel(ARCMSR_MESSAGE_START_DRIVER_MODE, reg->drv2iop_doorbell);
777 if (!arcmsr_hbb_wait_msgint_ready(pacb)) {
778 printk(KERN_ERR "arcmsr%d: can't set driver mode. \n", pacb->host->host_no);
779 return false;
780 }
781 return true;
782 }
783
784 static void arcmsr_pci_unmap_dma(struct CommandControlBlock *ccb)
785 {
786 struct scsi_cmnd *pcmd = ccb->pcmd;
787
788 scsi_dma_unmap(pcmd);
789 }
790
791 static void arcmsr_ccb_complete(struct CommandControlBlock *ccb)
792 {
793 struct AdapterControlBlock *acb = ccb->acb;
794 struct scsi_cmnd *pcmd = ccb->pcmd;
795 unsigned long flags;
796 atomic_dec(&acb->ccboutstandingcount);
797 arcmsr_pci_unmap_dma(ccb);
798 ccb->startdone = ARCMSR_CCB_DONE;
799 spin_lock_irqsave(&acb->ccblist_lock, flags);
800 list_add_tail(&ccb->list, &acb->ccb_free_list);
801 spin_unlock_irqrestore(&acb->ccblist_lock, flags);
802 pcmd->scsi_done(pcmd);
803 }
804
805 static void arcmsr_report_sense_info(struct CommandControlBlock *ccb)
806 {
807
808 struct scsi_cmnd *pcmd = ccb->pcmd;
809 struct SENSE_DATA *sensebuffer = (struct SENSE_DATA *)pcmd->sense_buffer;
810 pcmd->result = DID_OK << 16;
811 if (sensebuffer) {
812 int sense_data_length =
813 sizeof(struct SENSE_DATA) < SCSI_SENSE_BUFFERSIZE
814 ? sizeof(struct SENSE_DATA) : SCSI_SENSE_BUFFERSIZE;
815 memset(sensebuffer, 0, SCSI_SENSE_BUFFERSIZE);
816 memcpy(sensebuffer, ccb->arcmsr_cdb.SenseData, sense_data_length);
817 sensebuffer->ErrorCode = SCSI_SENSE_CURRENT_ERRORS;
818 sensebuffer->Valid = 1;
819 }
820 }
821
822 static u32 arcmsr_disable_outbound_ints(struct AdapterControlBlock *acb)
823 {
824 u32 orig_mask = 0;
825 switch (acb->adapter_type) {
826 case ACB_ADAPTER_TYPE_A : {
827 struct MessageUnit_A __iomem *reg = acb->pmuA;
828 orig_mask = readl(&reg->outbound_intmask);
829 writel(orig_mask|ARCMSR_MU_OUTBOUND_ALL_INTMASKENABLE, \
830 &reg->outbound_intmask);
831 }
832 break;
833 case ACB_ADAPTER_TYPE_B : {
834 struct MessageUnit_B *reg = acb->pmuB;
835 orig_mask = readl(reg->iop2drv_doorbell_mask);
836 writel(0, reg->iop2drv_doorbell_mask);
837 }
838 break;
839 case ACB_ADAPTER_TYPE_C:{
840 struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
841 /* disable all outbound interrupt */
842 orig_mask = readl(&reg->host_int_mask); /* disable outbound message0 int */
843 writel(orig_mask|ARCMSR_HBCMU_ALL_INTMASKENABLE, &reg->host_int_mask);
844 }
845 break;
846 }
847 return orig_mask;
848 }
849
850 static void arcmsr_report_ccb_state(struct AdapterControlBlock *acb,
851 struct CommandControlBlock *ccb, bool error)
852 {
853 uint8_t id, lun;
854 id = ccb->pcmd->device->id;
855 lun = ccb->pcmd->device->lun;
856 if (!error) {
857 if (acb->devstate[id][lun] == ARECA_RAID_GONE)
858 acb->devstate[id][lun] = ARECA_RAID_GOOD;
859 ccb->pcmd->result = DID_OK << 16;
860 arcmsr_ccb_complete(ccb);
861 }else{
862 switch (ccb->arcmsr_cdb.DeviceStatus) {
863 case ARCMSR_DEV_SELECT_TIMEOUT: {
864 acb->devstate[id][lun] = ARECA_RAID_GONE;
865 ccb->pcmd->result = DID_NO_CONNECT << 16;
866 arcmsr_ccb_complete(ccb);
867 }
868 break;
869
870 case ARCMSR_DEV_ABORTED:
871
872 case ARCMSR_DEV_INIT_FAIL: {
873 acb->devstate[id][lun] = ARECA_RAID_GONE;
874 ccb->pcmd->result = DID_BAD_TARGET << 16;
875 arcmsr_ccb_complete(ccb);
876 }
877 break;
878
879 case ARCMSR_DEV_CHECK_CONDITION: {
880 acb->devstate[id][lun] = ARECA_RAID_GOOD;
881 arcmsr_report_sense_info(ccb);
882 arcmsr_ccb_complete(ccb);
883 }
884 break;
885
886 default:
887 printk(KERN_NOTICE
888 "arcmsr%d: scsi id = %d lun = %d isr get command error done, \
889 but got unknown DeviceStatus = 0x%x \n"
890 , acb->host->host_no
891 , id
892 , lun
893 , ccb->arcmsr_cdb.DeviceStatus);
894 acb->devstate[id][lun] = ARECA_RAID_GONE;
895 ccb->pcmd->result = DID_NO_CONNECT << 16;
896 arcmsr_ccb_complete(ccb);
897 break;
898 }
899 }
900 }
901
902 static void arcmsr_drain_donequeue(struct AdapterControlBlock *acb, struct CommandControlBlock *pCCB, bool error)
903 {
904 int id, lun;
905 if ((pCCB->acb != acb) || (pCCB->startdone != ARCMSR_CCB_START)) {
906 if (pCCB->startdone == ARCMSR_CCB_ABORTED) {
907 struct scsi_cmnd *abortcmd = pCCB->pcmd;
908 if (abortcmd) {
909 id = abortcmd->device->id;
910 lun = abortcmd->device->lun;
911 abortcmd->result |= DID_ABORT << 16;
912 arcmsr_ccb_complete(pCCB);
913 printk(KERN_NOTICE "arcmsr%d: pCCB ='0x%p' isr got aborted command \n",
914 acb->host->host_no, pCCB);
915 }
916 return;
917 }
918 printk(KERN_NOTICE "arcmsr%d: isr get an illegal ccb command \
919 done acb = '0x%p'"
920 "ccb = '0x%p' ccbacb = '0x%p' startdone = 0x%x"
921 " ccboutstandingcount = %d \n"
922 , acb->host->host_no
923 , acb
924 , pCCB
925 , pCCB->acb
926 , pCCB->startdone
927 , atomic_read(&acb->ccboutstandingcount));
928 return;
929 }
930 arcmsr_report_ccb_state(acb, pCCB, error);
931 }
932
933 static void arcmsr_done4abort_postqueue(struct AdapterControlBlock *acb)
934 {
935 int i = 0;
936 uint32_t flag_ccb;
937 struct ARCMSR_CDB *pARCMSR_CDB;
938 bool error;
939 struct CommandControlBlock *pCCB;
940 switch (acb->adapter_type) {
941
942 case ACB_ADAPTER_TYPE_A: {
943 struct MessageUnit_A __iomem *reg = acb->pmuA;
944 uint32_t outbound_intstatus;
945 outbound_intstatus = readl(&reg->outbound_intstatus) &
946 acb->outbound_int_enable;
947 /*clear and abort all outbound posted Q*/
948 writel(outbound_intstatus, &reg->outbound_intstatus);/*clear interrupt*/
949 while(((flag_ccb = readl(&reg->outbound_queueport)) != 0xFFFFFFFF)
950 && (i++ < ARCMSR_MAX_OUTSTANDING_CMD)) {
951 pARCMSR_CDB = (struct ARCMSR_CDB *)(acb->vir2phy_offset + (flag_ccb << 5));/*frame must be 32 bytes aligned*/
952 pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
953 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
954 arcmsr_drain_donequeue(acb, pCCB, error);
955 }
956 }
957 break;
958
959 case ACB_ADAPTER_TYPE_B: {
960 struct MessageUnit_B *reg = acb->pmuB;
961 /*clear all outbound posted Q*/
962 writel(ARCMSR_DOORBELL_INT_CLEAR_PATTERN, reg->iop2drv_doorbell); /* clear doorbell interrupt */
963 for (i = 0; i < ARCMSR_MAX_HBB_POSTQUEUE; i++) {
964 if ((flag_ccb = readl(&reg->done_qbuffer[i])) != 0) {
965 writel(0, &reg->done_qbuffer[i]);
966 pARCMSR_CDB = (struct ARCMSR_CDB *)(acb->vir2phy_offset+(flag_ccb << 5));/*frame must be 32 bytes aligned*/
967 pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
968 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
969 arcmsr_drain_donequeue(acb, pCCB, error);
970 }
971 reg->post_qbuffer[i] = 0;
972 }
973 reg->doneq_index = 0;
974 reg->postq_index = 0;
975 }
976 break;
977 case ACB_ADAPTER_TYPE_C: {
978 struct MessageUnit_C *reg = acb->pmuC;
979 struct ARCMSR_CDB *pARCMSR_CDB;
980 uint32_t flag_ccb, ccb_cdb_phy;
981 bool error;
982 struct CommandControlBlock *pCCB;
983 while ((readl(&reg->host_int_status) & ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR) && (i++ < ARCMSR_MAX_OUTSTANDING_CMD)) {
984 /*need to do*/
985 flag_ccb = readl(&reg->outbound_queueport_low);
986 ccb_cdb_phy = (flag_ccb & 0xFFFFFFF0);
987 pARCMSR_CDB = (struct ARCMSR_CDB *)(acb->vir2phy_offset+ccb_cdb_phy);/*frame must be 32 bytes aligned*/
988 pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
989 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE1) ? true : false;
990 arcmsr_drain_donequeue(acb, pCCB, error);
991 }
992 }
993 }
994 }
995 static void arcmsr_remove(struct pci_dev *pdev)
996 {
997 struct Scsi_Host *host = pci_get_drvdata(pdev);
998 struct AdapterControlBlock *acb =
999 (struct AdapterControlBlock *) host->hostdata;
1000 int poll_count = 0;
1001 arcmsr_free_sysfs_attr(acb);
1002 scsi_remove_host(host);
1003 flush_work_sync(&acb->arcmsr_do_message_isr_bh);
1004 del_timer_sync(&acb->eternal_timer);
1005 arcmsr_disable_outbound_ints(acb);
1006 arcmsr_stop_adapter_bgrb(acb);
1007 arcmsr_flush_adapter_cache(acb);
1008 acb->acb_flags |= ACB_F_SCSISTOPADAPTER;
1009 acb->acb_flags &= ~ACB_F_IOP_INITED;
1010
1011 for (poll_count = 0; poll_count < ARCMSR_MAX_OUTSTANDING_CMD; poll_count++){
1012 if (!atomic_read(&acb->ccboutstandingcount))
1013 break;
1014 arcmsr_interrupt(acb);/* FIXME: need spinlock */
1015 msleep(25);
1016 }
1017
1018 if (atomic_read(&acb->ccboutstandingcount)) {
1019 int i;
1020
1021 arcmsr_abort_allcmd(acb);
1022 arcmsr_done4abort_postqueue(acb);
1023 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
1024 struct CommandControlBlock *ccb = acb->pccb_pool[i];
1025 if (ccb->startdone == ARCMSR_CCB_START) {
1026 ccb->startdone = ARCMSR_CCB_ABORTED;
1027 ccb->pcmd->result = DID_ABORT << 16;
1028 arcmsr_ccb_complete(ccb);
1029 }
1030 }
1031 }
1032 free_irq(pdev->irq, acb);
1033 arcmsr_free_ccb_pool(acb);
1034 arcmsr_free_hbb_mu(acb);
1035 arcmsr_unmap_pciregion(acb);
1036 pci_release_regions(pdev);
1037 scsi_host_put(host);
1038 pci_disable_device(pdev);
1039 pci_set_drvdata(pdev, NULL);
1040 }
1041
1042 static void arcmsr_shutdown(struct pci_dev *pdev)
1043 {
1044 struct Scsi_Host *host = pci_get_drvdata(pdev);
1045 struct AdapterControlBlock *acb =
1046 (struct AdapterControlBlock *)host->hostdata;
1047 del_timer_sync(&acb->eternal_timer);
1048 arcmsr_disable_outbound_ints(acb);
1049 flush_work_sync(&acb->arcmsr_do_message_isr_bh);
1050 arcmsr_stop_adapter_bgrb(acb);
1051 arcmsr_flush_adapter_cache(acb);
1052 }
1053
1054 static int arcmsr_module_init(void)
1055 {
1056 int error = 0;
1057 error = pci_register_driver(&arcmsr_pci_driver);
1058 return error;
1059 }
1060
1061 static void arcmsr_module_exit(void)
1062 {
1063 pci_unregister_driver(&arcmsr_pci_driver);
1064 }
1065 module_init(arcmsr_module_init);
1066 module_exit(arcmsr_module_exit);
1067
1068 static void arcmsr_enable_outbound_ints(struct AdapterControlBlock *acb,
1069 u32 intmask_org)
1070 {
1071 u32 mask;
1072 switch (acb->adapter_type) {
1073
1074 case ACB_ADAPTER_TYPE_A: {
1075 struct MessageUnit_A __iomem *reg = acb->pmuA;
1076 mask = intmask_org & ~(ARCMSR_MU_OUTBOUND_POSTQUEUE_INTMASKENABLE |
1077 ARCMSR_MU_OUTBOUND_DOORBELL_INTMASKENABLE|
1078 ARCMSR_MU_OUTBOUND_MESSAGE0_INTMASKENABLE);
1079 writel(mask, &reg->outbound_intmask);
1080 acb->outbound_int_enable = ~(intmask_org & mask) & 0x000000ff;
1081 }
1082 break;
1083
1084 case ACB_ADAPTER_TYPE_B: {
1085 struct MessageUnit_B *reg = acb->pmuB;
1086 mask = intmask_org | (ARCMSR_IOP2DRV_DATA_WRITE_OK |
1087 ARCMSR_IOP2DRV_DATA_READ_OK |
1088 ARCMSR_IOP2DRV_CDB_DONE |
1089 ARCMSR_IOP2DRV_MESSAGE_CMD_DONE);
1090 writel(mask, reg->iop2drv_doorbell_mask);
1091 acb->outbound_int_enable = (intmask_org | mask) & 0x0000000f;
1092 }
1093 break;
1094 case ACB_ADAPTER_TYPE_C: {
1095 struct MessageUnit_C *reg = acb->pmuC;
1096 mask = ~(ARCMSR_HBCMU_UTILITY_A_ISR_MASK | ARCMSR_HBCMU_OUTBOUND_DOORBELL_ISR_MASK|ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR_MASK);
1097 writel(intmask_org & mask, &reg->host_int_mask);
1098 acb->outbound_int_enable = ~(intmask_org & mask) & 0x0000000f;
1099 }
1100 }
1101 }
1102
1103 static int arcmsr_build_ccb(struct AdapterControlBlock *acb,
1104 struct CommandControlBlock *ccb, struct scsi_cmnd *pcmd)
1105 {
1106 struct ARCMSR_CDB *arcmsr_cdb = (struct ARCMSR_CDB *)&ccb->arcmsr_cdb;
1107 int8_t *psge = (int8_t *)&arcmsr_cdb->u;
1108 __le32 address_lo, address_hi;
1109 int arccdbsize = 0x30;
1110 __le32 length = 0;
1111 int i;
1112 struct scatterlist *sg;
1113 int nseg;
1114 ccb->pcmd = pcmd;
1115 memset(arcmsr_cdb, 0, sizeof(struct ARCMSR_CDB));
1116 arcmsr_cdb->TargetID = pcmd->device->id;
1117 arcmsr_cdb->LUN = pcmd->device->lun;
1118 arcmsr_cdb->Function = 1;
1119 arcmsr_cdb->Context = 0;
1120 memcpy(arcmsr_cdb->Cdb, pcmd->cmnd, pcmd->cmd_len);
1121
1122 nseg = scsi_dma_map(pcmd);
1123 if (unlikely(nseg > acb->host->sg_tablesize || nseg < 0))
1124 return FAILED;
1125 scsi_for_each_sg(pcmd, sg, nseg, i) {
1126 /* Get the physical address of the current data pointer */
1127 length = cpu_to_le32(sg_dma_len(sg));
1128 address_lo = cpu_to_le32(dma_addr_lo32(sg_dma_address(sg)));
1129 address_hi = cpu_to_le32(dma_addr_hi32(sg_dma_address(sg)));
1130 if (address_hi == 0) {
1131 struct SG32ENTRY *pdma_sg = (struct SG32ENTRY *)psge;
1132
1133 pdma_sg->address = address_lo;
1134 pdma_sg->length = length;
1135 psge += sizeof (struct SG32ENTRY);
1136 arccdbsize += sizeof (struct SG32ENTRY);
1137 } else {
1138 struct SG64ENTRY *pdma_sg = (struct SG64ENTRY *)psge;
1139
1140 pdma_sg->addresshigh = address_hi;
1141 pdma_sg->address = address_lo;
1142 pdma_sg->length = length|cpu_to_le32(IS_SG64_ADDR);
1143 psge += sizeof (struct SG64ENTRY);
1144 arccdbsize += sizeof (struct SG64ENTRY);
1145 }
1146 }
1147 arcmsr_cdb->sgcount = (uint8_t)nseg;
1148 arcmsr_cdb->DataLength = scsi_bufflen(pcmd);
1149 arcmsr_cdb->msgPages = arccdbsize/0x100 + (arccdbsize % 0x100 ? 1 : 0);
1150 if ( arccdbsize > 256)
1151 arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_SGL_BSIZE;
1152 if (pcmd->sc_data_direction == DMA_TO_DEVICE)
1153 arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_WRITE;
1154 ccb->arc_cdb_size = arccdbsize;
1155 return SUCCESS;
1156 }
1157
1158 static void arcmsr_post_ccb(struct AdapterControlBlock *acb, struct CommandControlBlock *ccb)
1159 {
1160 uint32_t cdb_phyaddr_pattern = ccb->cdb_phyaddr_pattern;
1161 struct ARCMSR_CDB *arcmsr_cdb = (struct ARCMSR_CDB *)&ccb->arcmsr_cdb;
1162 atomic_inc(&acb->ccboutstandingcount);
1163 ccb->startdone = ARCMSR_CCB_START;
1164 switch (acb->adapter_type) {
1165 case ACB_ADAPTER_TYPE_A: {
1166 struct MessageUnit_A __iomem *reg = acb->pmuA;
1167
1168 if (arcmsr_cdb->Flags & ARCMSR_CDB_FLAG_SGL_BSIZE)
1169 writel(cdb_phyaddr_pattern | ARCMSR_CCBPOST_FLAG_SGL_BSIZE,
1170 &reg->inbound_queueport);
1171 else {
1172 writel(cdb_phyaddr_pattern, &reg->inbound_queueport);
1173 }
1174 }
1175 break;
1176
1177 case ACB_ADAPTER_TYPE_B: {
1178 struct MessageUnit_B *reg = acb->pmuB;
1179 uint32_t ending_index, index = reg->postq_index;
1180
1181 ending_index = ((index + 1) % ARCMSR_MAX_HBB_POSTQUEUE);
1182 writel(0, &reg->post_qbuffer[ending_index]);
1183 if (arcmsr_cdb->Flags & ARCMSR_CDB_FLAG_SGL_BSIZE) {
1184 writel(cdb_phyaddr_pattern | ARCMSR_CCBPOST_FLAG_SGL_BSIZE,\
1185 &reg->post_qbuffer[index]);
1186 } else {
1187 writel(cdb_phyaddr_pattern, &reg->post_qbuffer[index]);
1188 }
1189 index++;
1190 index %= ARCMSR_MAX_HBB_POSTQUEUE;/*if last index number set it to 0 */
1191 reg->postq_index = index;
1192 writel(ARCMSR_DRV2IOP_CDB_POSTED, reg->drv2iop_doorbell);
1193 }
1194 break;
1195 case ACB_ADAPTER_TYPE_C: {
1196 struct MessageUnit_C *phbcmu = (struct MessageUnit_C *)acb->pmuC;
1197 uint32_t ccb_post_stamp, arc_cdb_size;
1198
1199 arc_cdb_size = (ccb->arc_cdb_size > 0x300) ? 0x300 : ccb->arc_cdb_size;
1200 ccb_post_stamp = (cdb_phyaddr_pattern | ((arc_cdb_size - 1) >> 6) | 1);
1201 if (acb->cdb_phyaddr_hi32) {
1202 writel(acb->cdb_phyaddr_hi32, &phbcmu->inbound_queueport_high);
1203 writel(ccb_post_stamp, &phbcmu->inbound_queueport_low);
1204 } else {
1205 writel(ccb_post_stamp, &phbcmu->inbound_queueport_low);
1206 }
1207 }
1208 }
1209 }
1210
1211 static void arcmsr_stop_hba_bgrb(struct AdapterControlBlock *acb)
1212 {
1213 struct MessageUnit_A __iomem *reg = acb->pmuA;
1214 acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
1215 writel(ARCMSR_INBOUND_MESG0_STOP_BGRB, &reg->inbound_msgaddr0);
1216 if (!arcmsr_hba_wait_msgint_ready(acb)) {
1217 printk(KERN_NOTICE
1218 "arcmsr%d: wait 'stop adapter background rebulid' timeout \n"
1219 , acb->host->host_no);
1220 }
1221 }
1222
1223 static void arcmsr_stop_hbb_bgrb(struct AdapterControlBlock *acb)
1224 {
1225 struct MessageUnit_B *reg = acb->pmuB;
1226 acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
1227 writel(ARCMSR_MESSAGE_STOP_BGRB, reg->drv2iop_doorbell);
1228
1229 if (!arcmsr_hbb_wait_msgint_ready(acb)) {
1230 printk(KERN_NOTICE
1231 "arcmsr%d: wait 'stop adapter background rebulid' timeout \n"
1232 , acb->host->host_no);
1233 }
1234 }
1235
1236 static void arcmsr_stop_hbc_bgrb(struct AdapterControlBlock *pACB)
1237 {
1238 struct MessageUnit_C *reg = (struct MessageUnit_C *)pACB->pmuC;
1239 pACB->acb_flags &= ~ACB_F_MSG_START_BGRB;
1240 writel(ARCMSR_INBOUND_MESG0_STOP_BGRB, &reg->inbound_msgaddr0);
1241 writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
1242 if (!arcmsr_hbc_wait_msgint_ready(pACB)) {
1243 printk(KERN_NOTICE
1244 "arcmsr%d: wait 'stop adapter background rebulid' timeout \n"
1245 , pACB->host->host_no);
1246 }
1247 return;
1248 }
1249 static void arcmsr_stop_adapter_bgrb(struct AdapterControlBlock *acb)
1250 {
1251 switch (acb->adapter_type) {
1252 case ACB_ADAPTER_TYPE_A: {
1253 arcmsr_stop_hba_bgrb(acb);
1254 }
1255 break;
1256
1257 case ACB_ADAPTER_TYPE_B: {
1258 arcmsr_stop_hbb_bgrb(acb);
1259 }
1260 break;
1261 case ACB_ADAPTER_TYPE_C: {
1262 arcmsr_stop_hbc_bgrb(acb);
1263 }
1264 }
1265 }
1266
1267 static void arcmsr_free_ccb_pool(struct AdapterControlBlock *acb)
1268 {
1269 dma_free_coherent(&acb->pdev->dev, acb->uncache_size, acb->dma_coherent, acb->dma_coherent_handle);
1270 }
1271
1272 void arcmsr_iop_message_read(struct AdapterControlBlock *acb)
1273 {
1274 switch (acb->adapter_type) {
1275 case ACB_ADAPTER_TYPE_A: {
1276 struct MessageUnit_A __iomem *reg = acb->pmuA;
1277 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, &reg->inbound_doorbell);
1278 }
1279 break;
1280
1281 case ACB_ADAPTER_TYPE_B: {
1282 struct MessageUnit_B *reg = acb->pmuB;
1283 writel(ARCMSR_DRV2IOP_DATA_READ_OK, reg->drv2iop_doorbell);
1284 }
1285 break;
1286 case ACB_ADAPTER_TYPE_C: {
1287 struct MessageUnit_C __iomem *reg = acb->pmuC;
1288 writel(ARCMSR_HBCMU_DRV2IOP_DATA_READ_OK, &reg->inbound_doorbell);
1289 }
1290 }
1291 }
1292
1293 static void arcmsr_iop_message_wrote(struct AdapterControlBlock *acb)
1294 {
1295 switch (acb->adapter_type) {
1296 case ACB_ADAPTER_TYPE_A: {
1297 struct MessageUnit_A __iomem *reg = acb->pmuA;
1298 /*
1299 ** push inbound doorbell tell iop, driver data write ok
1300 ** and wait reply on next hwinterrupt for next Qbuffer post
1301 */
1302 writel(ARCMSR_INBOUND_DRIVER_DATA_WRITE_OK, &reg->inbound_doorbell);
1303 }
1304 break;
1305
1306 case ACB_ADAPTER_TYPE_B: {
1307 struct MessageUnit_B *reg = acb->pmuB;
1308 /*
1309 ** push inbound doorbell tell iop, driver data write ok
1310 ** and wait reply on next hwinterrupt for next Qbuffer post
1311 */
1312 writel(ARCMSR_DRV2IOP_DATA_WRITE_OK, reg->drv2iop_doorbell);
1313 }
1314 break;
1315 case ACB_ADAPTER_TYPE_C: {
1316 struct MessageUnit_C __iomem *reg = acb->pmuC;
1317 /*
1318 ** push inbound doorbell tell iop, driver data write ok
1319 ** and wait reply on next hwinterrupt for next Qbuffer post
1320 */
1321 writel(ARCMSR_HBCMU_DRV2IOP_DATA_WRITE_OK, &reg->inbound_doorbell);
1322 }
1323 break;
1324 }
1325 }
1326
1327 struct QBUFFER __iomem *arcmsr_get_iop_rqbuffer(struct AdapterControlBlock *acb)
1328 {
1329 struct QBUFFER __iomem *qbuffer = NULL;
1330 switch (acb->adapter_type) {
1331
1332 case ACB_ADAPTER_TYPE_A: {
1333 struct MessageUnit_A __iomem *reg = acb->pmuA;
1334 qbuffer = (struct QBUFFER __iomem *)&reg->message_rbuffer;
1335 }
1336 break;
1337
1338 case ACB_ADAPTER_TYPE_B: {
1339 struct MessageUnit_B *reg = acb->pmuB;
1340 qbuffer = (struct QBUFFER __iomem *)reg->message_rbuffer;
1341 }
1342 break;
1343 case ACB_ADAPTER_TYPE_C: {
1344 struct MessageUnit_C *phbcmu = (struct MessageUnit_C *)acb->pmuC;
1345 qbuffer = (struct QBUFFER __iomem *)&phbcmu->message_rbuffer;
1346 }
1347 }
1348 return qbuffer;
1349 }
1350
1351 static struct QBUFFER __iomem *arcmsr_get_iop_wqbuffer(struct AdapterControlBlock *acb)
1352 {
1353 struct QBUFFER __iomem *pqbuffer = NULL;
1354 switch (acb->adapter_type) {
1355
1356 case ACB_ADAPTER_TYPE_A: {
1357 struct MessageUnit_A __iomem *reg = acb->pmuA;
1358 pqbuffer = (struct QBUFFER __iomem *) &reg->message_wbuffer;
1359 }
1360 break;
1361
1362 case ACB_ADAPTER_TYPE_B: {
1363 struct MessageUnit_B *reg = acb->pmuB;
1364 pqbuffer = (struct QBUFFER __iomem *)reg->message_wbuffer;
1365 }
1366 break;
1367 case ACB_ADAPTER_TYPE_C: {
1368 struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
1369 pqbuffer = (struct QBUFFER __iomem *)&reg->message_wbuffer;
1370 }
1371
1372 }
1373 return pqbuffer;
1374 }
1375
1376 static void arcmsr_iop2drv_data_wrote_handle(struct AdapterControlBlock *acb)
1377 {
1378 struct QBUFFER __iomem *prbuffer;
1379 struct QBUFFER *pQbuffer;
1380 uint8_t __iomem *iop_data;
1381 int32_t my_empty_len, iop_len, rqbuf_firstindex, rqbuf_lastindex;
1382 rqbuf_lastindex = acb->rqbuf_lastindex;
1383 rqbuf_firstindex = acb->rqbuf_firstindex;
1384 prbuffer = arcmsr_get_iop_rqbuffer(acb);
1385 iop_data = (uint8_t __iomem *)prbuffer->data;
1386 iop_len = prbuffer->data_len;
1387 my_empty_len = (rqbuf_firstindex - rqbuf_lastindex - 1) & (ARCMSR_MAX_QBUFFER - 1);
1388
1389 if (my_empty_len >= iop_len)
1390 {
1391 while (iop_len > 0) {
1392 pQbuffer = (struct QBUFFER *)&acb->rqbuffer[rqbuf_lastindex];
1393 memcpy(pQbuffer, iop_data, 1);
1394 rqbuf_lastindex++;
1395 rqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
1396 iop_data++;
1397 iop_len--;
1398 }
1399 acb->rqbuf_lastindex = rqbuf_lastindex;
1400 arcmsr_iop_message_read(acb);
1401 }
1402
1403 else {
1404 acb->acb_flags |= ACB_F_IOPDATA_OVERFLOW;
1405 }
1406 }
1407
1408 static void arcmsr_iop2drv_data_read_handle(struct AdapterControlBlock *acb)
1409 {
1410 acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_READED;
1411 if (acb->wqbuf_firstindex != acb->wqbuf_lastindex) {
1412 uint8_t *pQbuffer;
1413 struct QBUFFER __iomem *pwbuffer;
1414 uint8_t __iomem *iop_data;
1415 int32_t allxfer_len = 0;
1416
1417 acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED);
1418 pwbuffer = arcmsr_get_iop_wqbuffer(acb);
1419 iop_data = (uint8_t __iomem *)pwbuffer->data;
1420
1421 while ((acb->wqbuf_firstindex != acb->wqbuf_lastindex) && \
1422 (allxfer_len < 124)) {
1423 pQbuffer = &acb->wqbuffer[acb->wqbuf_firstindex];
1424 memcpy(iop_data, pQbuffer, 1);
1425 acb->wqbuf_firstindex++;
1426 acb->wqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
1427 iop_data++;
1428 allxfer_len++;
1429 }
1430 pwbuffer->data_len = allxfer_len;
1431
1432 arcmsr_iop_message_wrote(acb);
1433 }
1434
1435 if (acb->wqbuf_firstindex == acb->wqbuf_lastindex) {
1436 acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_CLEARED;
1437 }
1438 }
1439
1440 static void arcmsr_hba_doorbell_isr(struct AdapterControlBlock *acb)
1441 {
1442 uint32_t outbound_doorbell;
1443 struct MessageUnit_A __iomem *reg = acb->pmuA;
1444 outbound_doorbell = readl(&reg->outbound_doorbell);
1445 writel(outbound_doorbell, &reg->outbound_doorbell);
1446 if (outbound_doorbell & ARCMSR_OUTBOUND_IOP331_DATA_WRITE_OK) {
1447 arcmsr_iop2drv_data_wrote_handle(acb);
1448 }
1449
1450 if (outbound_doorbell & ARCMSR_OUTBOUND_IOP331_DATA_READ_OK) {
1451 arcmsr_iop2drv_data_read_handle(acb);
1452 }
1453 }
1454 static void arcmsr_hbc_doorbell_isr(struct AdapterControlBlock *pACB)
1455 {
1456 uint32_t outbound_doorbell;
1457 struct MessageUnit_C *reg = (struct MessageUnit_C *)pACB->pmuC;
1458 /*
1459 *******************************************************************
1460 ** Maybe here we need to check wrqbuffer_lock is lock or not
1461 ** DOORBELL: din! don!
1462 ** check if there are any mail need to pack from firmware
1463 *******************************************************************
1464 */
1465 outbound_doorbell = readl(&reg->outbound_doorbell);
1466 writel(outbound_doorbell, &reg->outbound_doorbell_clear);/*clear interrupt*/
1467 if (outbound_doorbell & ARCMSR_HBCMU_IOP2DRV_DATA_WRITE_OK) {
1468 arcmsr_iop2drv_data_wrote_handle(pACB);
1469 }
1470 if (outbound_doorbell & ARCMSR_HBCMU_IOP2DRV_DATA_READ_OK) {
1471 arcmsr_iop2drv_data_read_handle(pACB);
1472 }
1473 if (outbound_doorbell & ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE) {
1474 arcmsr_hbc_message_isr(pACB); /* messenger of "driver to iop commands" */
1475 }
1476 return;
1477 }
1478 static void arcmsr_hba_postqueue_isr(struct AdapterControlBlock *acb)
1479 {
1480 uint32_t flag_ccb;
1481 struct MessageUnit_A __iomem *reg = acb->pmuA;
1482 struct ARCMSR_CDB *pARCMSR_CDB;
1483 struct CommandControlBlock *pCCB;
1484 bool error;
1485 while ((flag_ccb = readl(&reg->outbound_queueport)) != 0xFFFFFFFF) {
1486 pARCMSR_CDB = (struct ARCMSR_CDB *)(acb->vir2phy_offset + (flag_ccb << 5));/*frame must be 32 bytes aligned*/
1487 pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
1488 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
1489 arcmsr_drain_donequeue(acb, pCCB, error);
1490 }
1491 }
1492 static void arcmsr_hbb_postqueue_isr(struct AdapterControlBlock *acb)
1493 {
1494 uint32_t index;
1495 uint32_t flag_ccb;
1496 struct MessageUnit_B *reg = acb->pmuB;
1497 struct ARCMSR_CDB *pARCMSR_CDB;
1498 struct CommandControlBlock *pCCB;
1499 bool error;
1500 index = reg->doneq_index;
1501 while ((flag_ccb = readl(&reg->done_qbuffer[index])) != 0) {
1502 writel(0, &reg->done_qbuffer[index]);
1503 pARCMSR_CDB = (struct ARCMSR_CDB *)(acb->vir2phy_offset+(flag_ccb << 5));/*frame must be 32 bytes aligned*/
1504 pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
1505 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
1506 arcmsr_drain_donequeue(acb, pCCB, error);
1507 index++;
1508 index %= ARCMSR_MAX_HBB_POSTQUEUE;
1509 reg->doneq_index = index;
1510 }
1511 }
1512
1513 static void arcmsr_hbc_postqueue_isr(struct AdapterControlBlock *acb)
1514 {
1515 struct MessageUnit_C *phbcmu;
1516 struct ARCMSR_CDB *arcmsr_cdb;
1517 struct CommandControlBlock *ccb;
1518 uint32_t flag_ccb, ccb_cdb_phy, throttling = 0;
1519 int error;
1520
1521 phbcmu = (struct MessageUnit_C *)acb->pmuC;
1522 /* areca cdb command done */
1523 /* Use correct offset and size for syncing */
1524
1525 while (readl(&phbcmu->host_int_status) &
1526 ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR){
1527 /* check if command done with no error*/
1528 flag_ccb = readl(&phbcmu->outbound_queueport_low);
1529 ccb_cdb_phy = (flag_ccb & 0xFFFFFFF0);/*frame must be 32 bytes aligned*/
1530 arcmsr_cdb = (struct ARCMSR_CDB *)(acb->vir2phy_offset + ccb_cdb_phy);
1531 ccb = container_of(arcmsr_cdb, struct CommandControlBlock, arcmsr_cdb);
1532 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE1) ? true : false;
1533 /* check if command done with no error */
1534 arcmsr_drain_donequeue(acb, ccb, error);
1535 if (throttling == ARCMSR_HBC_ISR_THROTTLING_LEVEL) {
1536 writel(ARCMSR_HBCMU_DRV2IOP_POSTQUEUE_THROTTLING, &phbcmu->inbound_doorbell);
1537 break;
1538 }
1539 throttling++;
1540 }
1541 }
1542 /*
1543 **********************************************************************************
1544 ** Handle a message interrupt
1545 **
1546 ** The only message interrupt we expect is in response to a query for the current adapter config.
1547 ** We want this in order to compare the drivemap so that we can detect newly-attached drives.
1548 **********************************************************************************
1549 */
1550 static void arcmsr_hba_message_isr(struct AdapterControlBlock *acb)
1551 {
1552 struct MessageUnit_A *reg = acb->pmuA;
1553 /*clear interrupt and message state*/
1554 writel(ARCMSR_MU_OUTBOUND_MESSAGE0_INT, &reg->outbound_intstatus);
1555 schedule_work(&acb->arcmsr_do_message_isr_bh);
1556 }
1557 static void arcmsr_hbb_message_isr(struct AdapterControlBlock *acb)
1558 {
1559 struct MessageUnit_B *reg = acb->pmuB;
1560
1561 /*clear interrupt and message state*/
1562 writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN, reg->iop2drv_doorbell);
1563 schedule_work(&acb->arcmsr_do_message_isr_bh);
1564 }
1565 /*
1566 **********************************************************************************
1567 ** Handle a message interrupt
1568 **
1569 ** The only message interrupt we expect is in response to a query for the
1570 ** current adapter config.
1571 ** We want this in order to compare the drivemap so that we can detect newly-attached drives.
1572 **********************************************************************************
1573 */
1574 static void arcmsr_hbc_message_isr(struct AdapterControlBlock *acb)
1575 {
1576 struct MessageUnit_C *reg = acb->pmuC;
1577 /*clear interrupt and message state*/
1578 writel(ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE_DOORBELL_CLEAR, &reg->outbound_doorbell_clear);
1579 schedule_work(&acb->arcmsr_do_message_isr_bh);
1580 }
1581
1582 static int arcmsr_handle_hba_isr(struct AdapterControlBlock *acb)
1583 {
1584 uint32_t outbound_intstatus;
1585 struct MessageUnit_A __iomem *reg = acb->pmuA;
1586 outbound_intstatus = readl(&reg->outbound_intstatus) &
1587 acb->outbound_int_enable;
1588 if (!(outbound_intstatus & ARCMSR_MU_OUTBOUND_HANDLE_INT)) {
1589 return 1;
1590 }
1591 writel(outbound_intstatus, &reg->outbound_intstatus);
1592 if (outbound_intstatus & ARCMSR_MU_OUTBOUND_DOORBELL_INT) {
1593 arcmsr_hba_doorbell_isr(acb);
1594 }
1595 if (outbound_intstatus & ARCMSR_MU_OUTBOUND_POSTQUEUE_INT) {
1596 arcmsr_hba_postqueue_isr(acb);
1597 }
1598 if(outbound_intstatus & ARCMSR_MU_OUTBOUND_MESSAGE0_INT) {
1599 /* messenger of "driver to iop commands" */
1600 arcmsr_hba_message_isr(acb);
1601 }
1602 return 0;
1603 }
1604
1605 static int arcmsr_handle_hbb_isr(struct AdapterControlBlock *acb)
1606 {
1607 uint32_t outbound_doorbell;
1608 struct MessageUnit_B *reg = acb->pmuB;
1609 outbound_doorbell = readl(reg->iop2drv_doorbell) &
1610 acb->outbound_int_enable;
1611 if (!outbound_doorbell)
1612 return 1;
1613
1614 writel(~outbound_doorbell, reg->iop2drv_doorbell);
1615 /*in case the last action of doorbell interrupt clearance is cached,
1616 this action can push HW to write down the clear bit*/
1617 readl(reg->iop2drv_doorbell);
1618 writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT, reg->drv2iop_doorbell);
1619 if (outbound_doorbell & ARCMSR_IOP2DRV_DATA_WRITE_OK) {
1620 arcmsr_iop2drv_data_wrote_handle(acb);
1621 }
1622 if (outbound_doorbell & ARCMSR_IOP2DRV_DATA_READ_OK) {
1623 arcmsr_iop2drv_data_read_handle(acb);
1624 }
1625 if (outbound_doorbell & ARCMSR_IOP2DRV_CDB_DONE) {
1626 arcmsr_hbb_postqueue_isr(acb);
1627 }
1628 if(outbound_doorbell & ARCMSR_IOP2DRV_MESSAGE_CMD_DONE) {
1629 /* messenger of "driver to iop commands" */
1630 arcmsr_hbb_message_isr(acb);
1631 }
1632 return 0;
1633 }
1634
1635 static int arcmsr_handle_hbc_isr(struct AdapterControlBlock *pACB)
1636 {
1637 uint32_t host_interrupt_status;
1638 struct MessageUnit_C *phbcmu = (struct MessageUnit_C *)pACB->pmuC;
1639 /*
1640 *********************************************
1641 ** check outbound intstatus
1642 *********************************************
1643 */
1644 host_interrupt_status = readl(&phbcmu->host_int_status);
1645 if (!host_interrupt_status) {
1646 /*it must be share irq*/
1647 return 1;
1648 }
1649 /* MU ioctl transfer doorbell interrupts*/
1650 if (host_interrupt_status & ARCMSR_HBCMU_OUTBOUND_DOORBELL_ISR) {
1651 arcmsr_hbc_doorbell_isr(pACB); /* messenger of "ioctl message read write" */
1652 }
1653 /* MU post queue interrupts*/
1654 if (host_interrupt_status & ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR) {
1655 arcmsr_hbc_postqueue_isr(pACB); /* messenger of "scsi commands" */
1656 }
1657 return 0;
1658 }
1659 static irqreturn_t arcmsr_interrupt(struct AdapterControlBlock *acb)
1660 {
1661 switch (acb->adapter_type) {
1662 case ACB_ADAPTER_TYPE_A: {
1663 if (arcmsr_handle_hba_isr(acb)) {
1664 return IRQ_NONE;
1665 }
1666 }
1667 break;
1668
1669 case ACB_ADAPTER_TYPE_B: {
1670 if (arcmsr_handle_hbb_isr(acb)) {
1671 return IRQ_NONE;
1672 }
1673 }
1674 break;
1675 case ACB_ADAPTER_TYPE_C: {
1676 if (arcmsr_handle_hbc_isr(acb)) {
1677 return IRQ_NONE;
1678 }
1679 }
1680 }
1681 return IRQ_HANDLED;
1682 }
1683
1684 static void arcmsr_iop_parking(struct AdapterControlBlock *acb)
1685 {
1686 if (acb) {
1687 /* stop adapter background rebuild */
1688 if (acb->acb_flags & ACB_F_MSG_START_BGRB) {
1689 uint32_t intmask_org;
1690 acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
1691 intmask_org = arcmsr_disable_outbound_ints(acb);
1692 arcmsr_stop_adapter_bgrb(acb);
1693 arcmsr_flush_adapter_cache(acb);
1694 arcmsr_enable_outbound_ints(acb, intmask_org);
1695 }
1696 }
1697 }
1698
1699 void arcmsr_post_ioctldata2iop(struct AdapterControlBlock *acb)
1700 {
1701 int32_t wqbuf_firstindex, wqbuf_lastindex;
1702 uint8_t *pQbuffer;
1703 struct QBUFFER __iomem *pwbuffer;
1704 uint8_t __iomem *iop_data;
1705 int32_t allxfer_len = 0;
1706 pwbuffer = arcmsr_get_iop_wqbuffer(acb);
1707 iop_data = (uint8_t __iomem *)pwbuffer->data;
1708 if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_READED) {
1709 acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED);
1710 wqbuf_firstindex = acb->wqbuf_firstindex;
1711 wqbuf_lastindex = acb->wqbuf_lastindex;
1712 while ((wqbuf_firstindex != wqbuf_lastindex) && (allxfer_len < 124)) {
1713 pQbuffer = &acb->wqbuffer[wqbuf_firstindex];
1714 memcpy(iop_data, pQbuffer, 1);
1715 wqbuf_firstindex++;
1716 wqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
1717 iop_data++;
1718 allxfer_len++;
1719 }
1720 acb->wqbuf_firstindex = wqbuf_firstindex;
1721 pwbuffer->data_len = allxfer_len;
1722 arcmsr_iop_message_wrote(acb);
1723 }
1724 }
1725
1726 static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb,
1727 struct scsi_cmnd *cmd)
1728 {
1729 struct CMD_MESSAGE_FIELD *pcmdmessagefld;
1730 int retvalue = 0, transfer_len = 0;
1731 char *buffer;
1732 struct scatterlist *sg;
1733 uint32_t controlcode = (uint32_t ) cmd->cmnd[5] << 24 |
1734 (uint32_t ) cmd->cmnd[6] << 16 |
1735 (uint32_t ) cmd->cmnd[7] << 8 |
1736 (uint32_t ) cmd->cmnd[8];
1737 /* 4 bytes: Areca io control code */
1738 sg = scsi_sglist(cmd);
1739 buffer = kmap_atomic(sg_page(sg), KM_IRQ0) + sg->offset;
1740 if (scsi_sg_count(cmd) > 1) {
1741 retvalue = ARCMSR_MESSAGE_FAIL;
1742 goto message_out;
1743 }
1744 transfer_len += sg->length;
1745
1746 if (transfer_len > sizeof(struct CMD_MESSAGE_FIELD)) {
1747 retvalue = ARCMSR_MESSAGE_FAIL;
1748 goto message_out;
1749 }
1750 pcmdmessagefld = (struct CMD_MESSAGE_FIELD *) buffer;
1751 switch(controlcode) {
1752
1753 case ARCMSR_MESSAGE_READ_RQBUFFER: {
1754 unsigned char *ver_addr;
1755 uint8_t *pQbuffer, *ptmpQbuffer;
1756 int32_t allxfer_len = 0;
1757
1758 ver_addr = kmalloc(1032, GFP_ATOMIC);
1759 if (!ver_addr) {
1760 retvalue = ARCMSR_MESSAGE_FAIL;
1761 goto message_out;
1762 }
1763
1764 ptmpQbuffer = ver_addr;
1765 while ((acb->rqbuf_firstindex != acb->rqbuf_lastindex)
1766 && (allxfer_len < 1031)) {
1767 pQbuffer = &acb->rqbuffer[acb->rqbuf_firstindex];
1768 memcpy(ptmpQbuffer, pQbuffer, 1);
1769 acb->rqbuf_firstindex++;
1770 acb->rqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
1771 ptmpQbuffer++;
1772 allxfer_len++;
1773 }
1774 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
1775
1776 struct QBUFFER __iomem *prbuffer;
1777 uint8_t __iomem *iop_data;
1778 int32_t iop_len;
1779
1780 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
1781 prbuffer = arcmsr_get_iop_rqbuffer(acb);
1782 iop_data = prbuffer->data;
1783 iop_len = readl(&prbuffer->data_len);
1784 while (iop_len > 0) {
1785 acb->rqbuffer[acb->rqbuf_lastindex] = readb(iop_data);
1786 acb->rqbuf_lastindex++;
1787 acb->rqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
1788 iop_data++;
1789 iop_len--;
1790 }
1791 arcmsr_iop_message_read(acb);
1792 }
1793 memcpy(pcmdmessagefld->messagedatabuffer, ver_addr, allxfer_len);
1794 pcmdmessagefld->cmdmessage.Length = allxfer_len;
1795 if(acb->fw_flag == FW_DEADLOCK) {
1796 pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1797 }else{
1798 pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK;
1799 }
1800 kfree(ver_addr);
1801 }
1802 break;
1803
1804 case ARCMSR_MESSAGE_WRITE_WQBUFFER: {
1805 unsigned char *ver_addr;
1806 int32_t my_empty_len, user_len, wqbuf_firstindex, wqbuf_lastindex;
1807 uint8_t *pQbuffer, *ptmpuserbuffer;
1808
1809 ver_addr = kmalloc(1032, GFP_ATOMIC);
1810 if (!ver_addr) {
1811 retvalue = ARCMSR_MESSAGE_FAIL;
1812 goto message_out;
1813 }
1814 if(acb->fw_flag == FW_DEADLOCK) {
1815 pcmdmessagefld->cmdmessage.ReturnCode =
1816 ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1817 }else{
1818 pcmdmessagefld->cmdmessage.ReturnCode =
1819 ARCMSR_MESSAGE_RETURNCODE_OK;
1820 }
1821 ptmpuserbuffer = ver_addr;
1822 user_len = pcmdmessagefld->cmdmessage.Length;
1823 memcpy(ptmpuserbuffer, pcmdmessagefld->messagedatabuffer, user_len);
1824 wqbuf_lastindex = acb->wqbuf_lastindex;
1825 wqbuf_firstindex = acb->wqbuf_firstindex;
1826 if (wqbuf_lastindex != wqbuf_firstindex) {
1827 struct SENSE_DATA *sensebuffer =
1828 (struct SENSE_DATA *)cmd->sense_buffer;
1829 arcmsr_post_ioctldata2iop(acb);
1830 /* has error report sensedata */
1831 sensebuffer->ErrorCode = 0x70;
1832 sensebuffer->SenseKey = ILLEGAL_REQUEST;
1833 sensebuffer->AdditionalSenseLength = 0x0A;
1834 sensebuffer->AdditionalSenseCode = 0x20;
1835 sensebuffer->Valid = 1;
1836 retvalue = ARCMSR_MESSAGE_FAIL;
1837 } else {
1838 my_empty_len = (wqbuf_firstindex-wqbuf_lastindex - 1)
1839 &(ARCMSR_MAX_QBUFFER - 1);
1840 if (my_empty_len >= user_len) {
1841 while (user_len > 0) {
1842 pQbuffer =
1843 &acb->wqbuffer[acb->wqbuf_lastindex];
1844 memcpy(pQbuffer, ptmpuserbuffer, 1);
1845 acb->wqbuf_lastindex++;
1846 acb->wqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
1847 ptmpuserbuffer++;
1848 user_len--;
1849 }
1850 if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_CLEARED) {
1851 acb->acb_flags &=
1852 ~ACB_F_MESSAGE_WQBUFFER_CLEARED;
1853 arcmsr_post_ioctldata2iop(acb);
1854 }
1855 } else {
1856 /* has error report sensedata */
1857 struct SENSE_DATA *sensebuffer =
1858 (struct SENSE_DATA *)cmd->sense_buffer;
1859 sensebuffer->ErrorCode = 0x70;
1860 sensebuffer->SenseKey = ILLEGAL_REQUEST;
1861 sensebuffer->AdditionalSenseLength = 0x0A;
1862 sensebuffer->AdditionalSenseCode = 0x20;
1863 sensebuffer->Valid = 1;
1864 retvalue = ARCMSR_MESSAGE_FAIL;
1865 }
1866 }
1867 kfree(ver_addr);
1868 }
1869 break;
1870
1871 case ARCMSR_MESSAGE_CLEAR_RQBUFFER: {
1872 uint8_t *pQbuffer = acb->rqbuffer;
1873 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
1874 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
1875 arcmsr_iop_message_read(acb);
1876 }
1877 acb->acb_flags |= ACB_F_MESSAGE_RQBUFFER_CLEARED;
1878 acb->rqbuf_firstindex = 0;
1879 acb->rqbuf_lastindex = 0;
1880 memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER);
1881 if(acb->fw_flag == FW_DEADLOCK) {
1882 pcmdmessagefld->cmdmessage.ReturnCode =
1883 ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1884 }else{
1885 pcmdmessagefld->cmdmessage.ReturnCode =
1886 ARCMSR_MESSAGE_RETURNCODE_OK;
1887 }
1888 }
1889 break;
1890
1891 case ARCMSR_MESSAGE_CLEAR_WQBUFFER: {
1892 uint8_t *pQbuffer = acb->wqbuffer;
1893 if(acb->fw_flag == FW_DEADLOCK) {
1894 pcmdmessagefld->cmdmessage.ReturnCode =
1895 ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1896 }else{
1897 pcmdmessagefld->cmdmessage.ReturnCode =
1898 ARCMSR_MESSAGE_RETURNCODE_OK;
1899 }
1900
1901 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
1902 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
1903 arcmsr_iop_message_read(acb);
1904 }
1905 acb->acb_flags |=
1906 (ACB_F_MESSAGE_WQBUFFER_CLEARED |
1907 ACB_F_MESSAGE_WQBUFFER_READED);
1908 acb->wqbuf_firstindex = 0;
1909 acb->wqbuf_lastindex = 0;
1910 memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER);
1911 }
1912 break;
1913
1914 case ARCMSR_MESSAGE_CLEAR_ALLQBUFFER: {
1915 uint8_t *pQbuffer;
1916
1917 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
1918 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
1919 arcmsr_iop_message_read(acb);
1920 }
1921 acb->acb_flags |=
1922 (ACB_F_MESSAGE_WQBUFFER_CLEARED
1923 | ACB_F_MESSAGE_RQBUFFER_CLEARED
1924 | ACB_F_MESSAGE_WQBUFFER_READED);
1925 acb->rqbuf_firstindex = 0;
1926 acb->rqbuf_lastindex = 0;
1927 acb->wqbuf_firstindex = 0;
1928 acb->wqbuf_lastindex = 0;
1929 pQbuffer = acb->rqbuffer;
1930 memset(pQbuffer, 0, sizeof(struct QBUFFER));
1931 pQbuffer = acb->wqbuffer;
1932 memset(pQbuffer, 0, sizeof(struct QBUFFER));
1933 if(acb->fw_flag == FW_DEADLOCK) {
1934 pcmdmessagefld->cmdmessage.ReturnCode =
1935 ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1936 }else{
1937 pcmdmessagefld->cmdmessage.ReturnCode =
1938 ARCMSR_MESSAGE_RETURNCODE_OK;
1939 }
1940 }
1941 break;
1942
1943 case ARCMSR_MESSAGE_RETURN_CODE_3F: {
1944 if(acb->fw_flag == FW_DEADLOCK) {
1945 pcmdmessagefld->cmdmessage.ReturnCode =
1946 ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1947 }else{
1948 pcmdmessagefld->cmdmessage.ReturnCode =
1949 ARCMSR_MESSAGE_RETURNCODE_3F;
1950 }
1951 break;
1952 }
1953 case ARCMSR_MESSAGE_SAY_HELLO: {
1954 int8_t *hello_string = "Hello! I am ARCMSR";
1955 if(acb->fw_flag == FW_DEADLOCK) {
1956 pcmdmessagefld->cmdmessage.ReturnCode =
1957 ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1958 }else{
1959 pcmdmessagefld->cmdmessage.ReturnCode =
1960 ARCMSR_MESSAGE_RETURNCODE_OK;
1961 }
1962 memcpy(pcmdmessagefld->messagedatabuffer, hello_string
1963 , (int16_t)strlen(hello_string));
1964 }
1965 break;
1966
1967 case ARCMSR_MESSAGE_SAY_GOODBYE:
1968 if(acb->fw_flag == FW_DEADLOCK) {
1969 pcmdmessagefld->cmdmessage.ReturnCode =
1970 ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1971 }
1972 arcmsr_iop_parking(acb);
1973 break;
1974
1975 case ARCMSR_MESSAGE_FLUSH_ADAPTER_CACHE:
1976 if(acb->fw_flag == FW_DEADLOCK) {
1977 pcmdmessagefld->cmdmessage.ReturnCode =
1978 ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1979 }
1980 arcmsr_flush_adapter_cache(acb);
1981 break;
1982
1983 default:
1984 retvalue = ARCMSR_MESSAGE_FAIL;
1985 }
1986 message_out:
1987 sg = scsi_sglist(cmd);
1988 kunmap_atomic(buffer - sg->offset, KM_IRQ0);
1989 return retvalue;
1990 }
1991
1992 static struct CommandControlBlock *arcmsr_get_freeccb(struct AdapterControlBlock *acb)
1993 {
1994 struct list_head *head = &acb->ccb_free_list;
1995 struct CommandControlBlock *ccb = NULL;
1996 unsigned long flags;
1997 spin_lock_irqsave(&acb->ccblist_lock, flags);
1998 if (!list_empty(head)) {
1999 ccb = list_entry(head->next, struct CommandControlBlock, list);
2000 list_del_init(&ccb->list);
2001 }else{
2002 spin_unlock_irqrestore(&acb->ccblist_lock, flags);
2003 return 0;
2004 }
2005 spin_unlock_irqrestore(&acb->ccblist_lock, flags);
2006 return ccb;
2007 }
2008
2009 static void arcmsr_handle_virtual_command(struct AdapterControlBlock *acb,
2010 struct scsi_cmnd *cmd)
2011 {
2012 switch (cmd->cmnd[0]) {
2013 case INQUIRY: {
2014 unsigned char inqdata[36];
2015 char *buffer;
2016 struct scatterlist *sg;
2017
2018 if (cmd->device->lun) {
2019 cmd->result = (DID_TIME_OUT << 16);
2020 cmd->scsi_done(cmd);
2021 return;
2022 }
2023 inqdata[0] = TYPE_PROCESSOR;
2024 /* Periph Qualifier & Periph Dev Type */
2025 inqdata[1] = 0;
2026 /* rem media bit & Dev Type Modifier */
2027 inqdata[2] = 0;
2028 /* ISO, ECMA, & ANSI versions */
2029 inqdata[4] = 31;
2030 /* length of additional data */
2031 strncpy(&inqdata[8], "Areca ", 8);
2032 /* Vendor Identification */
2033 strncpy(&inqdata[16], "RAID controller ", 16);
2034 /* Product Identification */
2035 strncpy(&inqdata[32], "R001", 4); /* Product Revision */
2036
2037 sg = scsi_sglist(cmd);
2038 buffer = kmap_atomic(sg_page(sg), KM_IRQ0) + sg->offset;
2039
2040 memcpy(buffer, inqdata, sizeof(inqdata));
2041 sg = scsi_sglist(cmd);
2042 kunmap_atomic(buffer - sg->offset, KM_IRQ0);
2043
2044 cmd->scsi_done(cmd);
2045 }
2046 break;
2047 case WRITE_BUFFER:
2048 case READ_BUFFER: {
2049 if (arcmsr_iop_message_xfer(acb, cmd))
2050 cmd->result = (DID_ERROR << 16);
2051 cmd->scsi_done(cmd);
2052 }
2053 break;
2054 default:
2055 cmd->scsi_done(cmd);
2056 }
2057 }
2058
2059 static int arcmsr_queue_command_lck(struct scsi_cmnd *cmd,
2060 void (* done)(struct scsi_cmnd *))
2061 {
2062 struct Scsi_Host *host = cmd->device->host;
2063 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
2064 struct CommandControlBlock *ccb;
2065 int target = cmd->device->id;
2066 int lun = cmd->device->lun;
2067 uint8_t scsicmd = cmd->cmnd[0];
2068 cmd->scsi_done = done;
2069 cmd->host_scribble = NULL;
2070 cmd->result = 0;
2071 if ((scsicmd == SYNCHRONIZE_CACHE) ||(scsicmd == SEND_DIAGNOSTIC)){
2072 if(acb->devstate[target][lun] == ARECA_RAID_GONE) {
2073 cmd->result = (DID_NO_CONNECT << 16);
2074 }
2075 cmd->scsi_done(cmd);
2076 return 0;
2077 }
2078 if (target == 16) {
2079 /* virtual device for iop message transfer */
2080 arcmsr_handle_virtual_command(acb, cmd);
2081 return 0;
2082 }
2083 if (atomic_read(&acb->ccboutstandingcount) >=
2084 ARCMSR_MAX_OUTSTANDING_CMD)
2085 return SCSI_MLQUEUE_HOST_BUSY;
2086 ccb = arcmsr_get_freeccb(acb);
2087 if (!ccb)
2088 return SCSI_MLQUEUE_HOST_BUSY;
2089 if (arcmsr_build_ccb( acb, ccb, cmd ) == FAILED) {
2090 cmd->result = (DID_ERROR << 16) | (RESERVATION_CONFLICT << 1);
2091 cmd->scsi_done(cmd);
2092 return 0;
2093 }
2094 arcmsr_post_ccb(acb, ccb);
2095 return 0;
2096 }
2097
2098 static DEF_SCSI_QCMD(arcmsr_queue_command)
2099
2100 static bool arcmsr_get_hba_config(struct AdapterControlBlock *acb)
2101 {
2102 struct MessageUnit_A __iomem *reg = acb->pmuA;
2103 char *acb_firm_model = acb->firm_model;
2104 char *acb_firm_version = acb->firm_version;
2105 char *acb_device_map = acb->device_map;
2106 char __iomem *iop_firm_model = (char __iomem *)(&reg->message_rwbuffer[15]);
2107 char __iomem *iop_firm_version = (char __iomem *)(&reg->message_rwbuffer[17]);
2108 char __iomem *iop_device_map = (char __iomem *)(&reg->message_rwbuffer[21]);
2109 int count;
2110 writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
2111 if (!arcmsr_hba_wait_msgint_ready(acb)) {
2112 printk(KERN_NOTICE "arcmsr%d: wait 'get adapter firmware \
2113 miscellaneous data' timeout \n", acb->host->host_no);
2114 return false;
2115 }
2116 count = 8;
2117 while (count){
2118 *acb_firm_model = readb(iop_firm_model);
2119 acb_firm_model++;
2120 iop_firm_model++;
2121 count--;
2122 }
2123
2124 count = 16;
2125 while (count){
2126 *acb_firm_version = readb(iop_firm_version);
2127 acb_firm_version++;
2128 iop_firm_version++;
2129 count--;
2130 }
2131
2132 count=16;
2133 while(count){
2134 *acb_device_map = readb(iop_device_map);
2135 acb_device_map++;
2136 iop_device_map++;
2137 count--;
2138 }
2139 printk(KERN_NOTICE "Areca RAID Controller%d: F/W %s & Model %s\n",
2140 acb->host->host_no,
2141 acb->firm_version,
2142 acb->firm_model);
2143 acb->signature = readl(&reg->message_rwbuffer[0]);
2144 acb->firm_request_len = readl(&reg->message_rwbuffer[1]);
2145 acb->firm_numbers_queue = readl(&reg->message_rwbuffer[2]);
2146 acb->firm_sdram_size = readl(&reg->message_rwbuffer[3]);
2147 acb->firm_hd_channels = readl(&reg->message_rwbuffer[4]);
2148 acb->firm_cfg_version = readl(&reg->message_rwbuffer[25]); /*firm_cfg_version,25,100-103*/
2149 return true;
2150 }
2151 static bool arcmsr_get_hbb_config(struct AdapterControlBlock *acb)
2152 {
2153 struct MessageUnit_B *reg = acb->pmuB;
2154 struct pci_dev *pdev = acb->pdev;
2155 void *dma_coherent;
2156 dma_addr_t dma_coherent_handle;
2157 char *acb_firm_model = acb->firm_model;
2158 char *acb_firm_version = acb->firm_version;
2159 char *acb_device_map = acb->device_map;
2160 char __iomem *iop_firm_model;
2161 /*firm_model,15,60-67*/
2162 char __iomem *iop_firm_version;
2163 /*firm_version,17,68-83*/
2164 char __iomem *iop_device_map;
2165 /*firm_version,21,84-99*/
2166 int count;
2167 dma_coherent = dma_alloc_coherent(&pdev->dev, sizeof(struct MessageUnit_B), &dma_coherent_handle, GFP_KERNEL);
2168 if (!dma_coherent){
2169 printk(KERN_NOTICE "arcmsr%d: dma_alloc_coherent got error for hbb mu\n", acb->host->host_no);
2170 return false;
2171 }
2172 acb->dma_coherent_handle_hbb_mu = dma_coherent_handle;
2173 reg = (struct MessageUnit_B *)dma_coherent;
2174 acb->pmuB = reg;
2175 reg->drv2iop_doorbell= (uint32_t __iomem *)((unsigned long)acb->mem_base0 + ARCMSR_DRV2IOP_DOORBELL);
2176 reg->drv2iop_doorbell_mask = (uint32_t __iomem *)((unsigned long)acb->mem_base0 + ARCMSR_DRV2IOP_DOORBELL_MASK);
2177 reg->iop2drv_doorbell = (uint32_t __iomem *)((unsigned long)acb->mem_base0 + ARCMSR_IOP2DRV_DOORBELL);
2178 reg->iop2drv_doorbell_mask = (uint32_t __iomem *)((unsigned long)acb->mem_base0 + ARCMSR_IOP2DRV_DOORBELL_MASK);
2179 reg->message_wbuffer = (uint32_t __iomem *)((unsigned long)acb->mem_base1 + ARCMSR_MESSAGE_WBUFFER);
2180 reg->message_rbuffer = (uint32_t __iomem *)((unsigned long)acb->mem_base1 + ARCMSR_MESSAGE_RBUFFER);
2181 reg->message_rwbuffer = (uint32_t __iomem *)((unsigned long)acb->mem_base1 + ARCMSR_MESSAGE_RWBUFFER);
2182 iop_firm_model = (char __iomem *)(&reg->message_rwbuffer[15]); /*firm_model,15,60-67*/
2183 iop_firm_version = (char __iomem *)(&reg->message_rwbuffer[17]); /*firm_version,17,68-83*/
2184 iop_device_map = (char __iomem *)(&reg->message_rwbuffer[21]); /*firm_version,21,84-99*/
2185
2186 writel(ARCMSR_MESSAGE_GET_CONFIG, reg->drv2iop_doorbell);
2187 if (!arcmsr_hbb_wait_msgint_ready(acb)) {
2188 printk(KERN_NOTICE "arcmsr%d: wait 'get adapter firmware \
2189 miscellaneous data' timeout \n", acb->host->host_no);
2190 return false;
2191 }
2192 count = 8;
2193 while (count){
2194 *acb_firm_model = readb(iop_firm_model);
2195 acb_firm_model++;
2196 iop_firm_model++;
2197 count--;
2198 }
2199 count = 16;
2200 while (count){
2201 *acb_firm_version = readb(iop_firm_version);
2202 acb_firm_version++;
2203 iop_firm_version++;
2204 count--;
2205 }
2206
2207 count = 16;
2208 while(count){
2209 *acb_device_map = readb(iop_device_map);
2210 acb_device_map++;
2211 iop_device_map++;
2212 count--;
2213 }
2214
2215 printk(KERN_NOTICE "Areca RAID Controller%d: F/W %s & Model %s\n",
2216 acb->host->host_no,
2217 acb->firm_version,
2218 acb->firm_model);
2219
2220 acb->signature = readl(&reg->message_rwbuffer[1]);
2221 /*firm_signature,1,00-03*/
2222 acb->firm_request_len = readl(&reg->message_rwbuffer[2]);
2223 /*firm_request_len,1,04-07*/
2224 acb->firm_numbers_queue = readl(&reg->message_rwbuffer[3]);
2225 /*firm_numbers_queue,2,08-11*/
2226 acb->firm_sdram_size = readl(&reg->message_rwbuffer[4]);
2227 /*firm_sdram_size,3,12-15*/
2228 acb->firm_hd_channels = readl(&reg->message_rwbuffer[5]);
2229 /*firm_ide_channels,4,16-19*/
2230 acb->firm_cfg_version = readl(&reg->message_rwbuffer[25]); /*firm_cfg_version,25,100-103*/
2231 /*firm_ide_channels,4,16-19*/
2232 return true;
2233 }
2234
2235 static bool arcmsr_get_hbc_config(struct AdapterControlBlock *pACB)
2236 {
2237 uint32_t intmask_org, Index, firmware_state = 0;
2238 struct MessageUnit_C *reg = pACB->pmuC;
2239 char *acb_firm_model = pACB->firm_model;
2240 char *acb_firm_version = pACB->firm_version;
2241 char *iop_firm_model = (char *)(&reg->msgcode_rwbuffer[15]); /*firm_model,15,60-67*/
2242 char *iop_firm_version = (char *)(&reg->msgcode_rwbuffer[17]); /*firm_version,17,68-83*/
2243 int count;
2244 /* disable all outbound interrupt */
2245 intmask_org = readl(&reg->host_int_mask); /* disable outbound message0 int */
2246 writel(intmask_org|ARCMSR_HBCMU_ALL_INTMASKENABLE, &reg->host_int_mask);
2247 /* wait firmware ready */
2248 do {
2249 firmware_state = readl(&reg->outbound_msgaddr1);
2250 } while ((firmware_state & ARCMSR_HBCMU_MESSAGE_FIRMWARE_OK) == 0);
2251 /* post "get config" instruction */
2252 writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
2253 writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
2254 /* wait message ready */
2255 for (Index = 0; Index < 2000; Index++) {
2256 if (readl(&reg->outbound_doorbell) & ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE) {
2257 writel(ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE_DOORBELL_CLEAR, &reg->outbound_doorbell_clear);/*clear interrupt*/
2258 break;
2259 }
2260 udelay(10);
2261 } /*max 1 seconds*/
2262 if (Index >= 2000) {
2263 printk(KERN_NOTICE "arcmsr%d: wait 'get adapter firmware \
2264 miscellaneous data' timeout \n", pACB->host->host_no);
2265 return false;
2266 }
2267 count = 8;
2268 while (count) {
2269 *acb_firm_model = readb(iop_firm_model);
2270 acb_firm_model++;
2271 iop_firm_model++;
2272 count--;
2273 }
2274 count = 16;
2275 while (count) {
2276 *acb_firm_version = readb(iop_firm_version);
2277 acb_firm_version++;
2278 iop_firm_version++;
2279 count--;
2280 }
2281 printk(KERN_NOTICE "Areca RAID Controller%d: F/W %s & Model %s\n",
2282 pACB->host->host_no,
2283 pACB->firm_version,
2284 pACB->firm_model);
2285 pACB->firm_request_len = readl(&reg->msgcode_rwbuffer[1]); /*firm_request_len,1,04-07*/
2286 pACB->firm_numbers_queue = readl(&reg->msgcode_rwbuffer[2]); /*firm_numbers_queue,2,08-11*/
2287 pACB->firm_sdram_size = readl(&reg->msgcode_rwbuffer[3]); /*firm_sdram_size,3,12-15*/
2288 pACB->firm_hd_channels = readl(&reg->msgcode_rwbuffer[4]); /*firm_ide_channels,4,16-19*/
2289 pACB->firm_cfg_version = readl(&reg->msgcode_rwbuffer[25]); /*firm_cfg_version,25,100-103*/
2290 /*all interrupt service will be enable at arcmsr_iop_init*/
2291 return true;
2292 }
2293 static bool arcmsr_get_firmware_spec(struct AdapterControlBlock *acb)
2294 {
2295 if (acb->adapter_type == ACB_ADAPTER_TYPE_A)
2296 return arcmsr_get_hba_config(acb);
2297 else if (acb->adapter_type == ACB_ADAPTER_TYPE_B)
2298 return arcmsr_get_hbb_config(acb);
2299 else
2300 return arcmsr_get_hbc_config(acb);
2301 }
2302
2303 static int arcmsr_polling_hba_ccbdone(struct AdapterControlBlock *acb,
2304 struct CommandControlBlock *poll_ccb)
2305 {
2306 struct MessageUnit_A __iomem *reg = acb->pmuA;
2307 struct CommandControlBlock *ccb;
2308 struct ARCMSR_CDB *arcmsr_cdb;
2309 uint32_t flag_ccb, outbound_intstatus, poll_ccb_done = 0, poll_count = 0;
2310 int rtn;
2311 bool error;
2312 polling_hba_ccb_retry:
2313 poll_count++;
2314 outbound_intstatus = readl(&reg->outbound_intstatus) & acb->outbound_int_enable;
2315 writel(outbound_intstatus, &reg->outbound_intstatus);/*clear interrupt*/
2316 while (1) {
2317 if ((flag_ccb = readl(&reg->outbound_queueport)) == 0xFFFFFFFF) {
2318 if (poll_ccb_done){
2319 rtn = SUCCESS;
2320 break;
2321 }else {
2322 msleep(25);
2323 if (poll_count > 100){
2324 rtn = FAILED;
2325 break;
2326 }
2327 goto polling_hba_ccb_retry;
2328 }
2329 }
2330 arcmsr_cdb = (struct ARCMSR_CDB *)(acb->vir2phy_offset + (flag_ccb << 5));
2331 ccb = container_of(arcmsr_cdb, struct CommandControlBlock, arcmsr_cdb);
2332 poll_ccb_done = (ccb == poll_ccb) ? 1:0;
2333 if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) {
2334 if ((ccb->startdone == ARCMSR_CCB_ABORTED) || (ccb == poll_ccb)) {
2335 printk(KERN_NOTICE "arcmsr%d: scsi id = %d lun = %d ccb = '0x%p'"
2336 " poll command abort successfully \n"
2337 , acb->host->host_no
2338 , ccb->pcmd->device->id
2339 , ccb->pcmd->device->lun
2340 , ccb);
2341 ccb->pcmd->result = DID_ABORT << 16;
2342 arcmsr_ccb_complete(ccb);
2343 continue;
2344 }
2345 printk(KERN_NOTICE "arcmsr%d: polling get an illegal ccb"
2346 " command done ccb = '0x%p'"
2347 "ccboutstandingcount = %d \n"
2348 , acb->host->host_no
2349 , ccb
2350 , atomic_read(&acb->ccboutstandingcount));
2351 continue;
2352 }
2353 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
2354 arcmsr_report_ccb_state(acb, ccb, error);
2355 }
2356 return rtn;
2357 }
2358
2359 static int arcmsr_polling_hbb_ccbdone(struct AdapterControlBlock *acb,
2360 struct CommandControlBlock *poll_ccb)
2361 {
2362 struct MessageUnit_B *reg = acb->pmuB;
2363 struct ARCMSR_CDB *arcmsr_cdb;
2364 struct CommandControlBlock *ccb;
2365 uint32_t flag_ccb, poll_ccb_done = 0, poll_count = 0;
2366 int index, rtn;
2367 bool error;
2368 polling_hbb_ccb_retry:
2369
2370 poll_count++;
2371 /* clear doorbell interrupt */
2372 writel(ARCMSR_DOORBELL_INT_CLEAR_PATTERN, reg->iop2drv_doorbell);
2373 while(1){
2374 index = reg->doneq_index;
2375 if ((flag_ccb = readl(&reg->done_qbuffer[index])) == 0) {
2376 if (poll_ccb_done){
2377 rtn = SUCCESS;
2378 break;
2379 }else {
2380 msleep(25);
2381 if (poll_count > 100){
2382 rtn = FAILED;
2383 break;
2384 }
2385 goto polling_hbb_ccb_retry;
2386 }
2387 }
2388 writel(0, &reg->done_qbuffer[index]);
2389 index++;
2390 /*if last index number set it to 0 */
2391 index %= ARCMSR_MAX_HBB_POSTQUEUE;
2392 reg->doneq_index = index;
2393 /* check if command done with no error*/
2394 arcmsr_cdb = (struct ARCMSR_CDB *)(acb->vir2phy_offset + (flag_ccb << 5));
2395 ccb = container_of(arcmsr_cdb, struct CommandControlBlock, arcmsr_cdb);
2396 poll_ccb_done = (ccb == poll_ccb) ? 1:0;
2397 if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) {
2398 if ((ccb->startdone == ARCMSR_CCB_ABORTED) || (ccb == poll_ccb)) {
2399 printk(KERN_NOTICE "arcmsr%d: scsi id = %d lun = %d ccb = '0x%p'"
2400 " poll command abort successfully \n"
2401 ,acb->host->host_no
2402 ,ccb->pcmd->device->id
2403 ,ccb->pcmd->device->lun
2404 ,ccb);
2405 ccb->pcmd->result = DID_ABORT << 16;
2406 arcmsr_ccb_complete(ccb);
2407 continue;
2408 }
2409 printk(KERN_NOTICE "arcmsr%d: polling get an illegal ccb"
2410 " command done ccb = '0x%p'"
2411 "ccboutstandingcount = %d \n"
2412 , acb->host->host_no
2413 , ccb
2414 , atomic_read(&acb->ccboutstandingcount));
2415 continue;
2416 }
2417 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
2418 arcmsr_report_ccb_state(acb, ccb, error);
2419 }
2420 return rtn;
2421 }
2422
2423 static int arcmsr_polling_hbc_ccbdone(struct AdapterControlBlock *acb, struct CommandControlBlock *poll_ccb)
2424 {
2425 struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
2426 uint32_t flag_ccb, ccb_cdb_phy;
2427 struct ARCMSR_CDB *arcmsr_cdb;
2428 bool error;
2429 struct CommandControlBlock *pCCB;
2430 uint32_t poll_ccb_done = 0, poll_count = 0;
2431 int rtn;
2432 polling_hbc_ccb_retry:
2433 poll_count++;
2434 while (1) {
2435 if ((readl(&reg->host_int_status) & ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR) == 0) {
2436 if (poll_ccb_done) {
2437 rtn = SUCCESS;
2438 break;
2439 } else {
2440 msleep(25);
2441 if (poll_count > 100) {
2442 rtn = FAILED;
2443 break;
2444 }
2445 goto polling_hbc_ccb_retry;
2446 }
2447 }
2448 flag_ccb = readl(&reg->outbound_queueport_low);
2449 ccb_cdb_phy = (flag_ccb & 0xFFFFFFF0);
2450 arcmsr_cdb = (struct ARCMSR_CDB *)(acb->vir2phy_offset + ccb_cdb_phy);/*frame must be 32 bytes aligned*/
2451 pCCB = container_of(arcmsr_cdb, struct CommandControlBlock, arcmsr_cdb);
2452 poll_ccb_done = (pCCB == poll_ccb) ? 1 : 0;
2453 /* check ifcommand done with no error*/
2454 if ((pCCB->acb != acb) || (pCCB->startdone != ARCMSR_CCB_START)) {
2455 if (pCCB->startdone == ARCMSR_CCB_ABORTED) {
2456 printk(KERN_NOTICE "arcmsr%d: scsi id = %d lun = %d ccb = '0x%p'"
2457 " poll command abort successfully \n"
2458 , acb->host->host_no
2459 , pCCB->pcmd->device->id
2460 , pCCB->pcmd->device->lun
2461 , pCCB);
2462 pCCB->pcmd->result = DID_ABORT << 16;
2463 arcmsr_ccb_complete(pCCB);
2464 continue;
2465 }
2466 printk(KERN_NOTICE "arcmsr%d: polling get an illegal ccb"
2467 " command done ccb = '0x%p'"
2468 "ccboutstandingcount = %d \n"
2469 , acb->host->host_no
2470 , pCCB
2471 , atomic_read(&acb->ccboutstandingcount));
2472 continue;
2473 }
2474 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE1) ? true : false;
2475 arcmsr_report_ccb_state(acb, pCCB, error);
2476 }
2477 return rtn;
2478 }
2479 static int arcmsr_polling_ccbdone(struct AdapterControlBlock *acb,
2480 struct CommandControlBlock *poll_ccb)
2481 {
2482 int rtn = 0;
2483 switch (acb->adapter_type) {
2484
2485 case ACB_ADAPTER_TYPE_A: {
2486 rtn = arcmsr_polling_hba_ccbdone(acb, poll_ccb);
2487 }
2488 break;
2489
2490 case ACB_ADAPTER_TYPE_B: {
2491 rtn = arcmsr_polling_hbb_ccbdone(acb, poll_ccb);
2492 }
2493 break;
2494 case ACB_ADAPTER_TYPE_C: {
2495 rtn = arcmsr_polling_hbc_ccbdone(acb, poll_ccb);
2496 }
2497 }
2498 return rtn;
2499 }
2500
2501 static int arcmsr_iop_confirm(struct AdapterControlBlock *acb)
2502 {
2503 uint32_t cdb_phyaddr, cdb_phyaddr_hi32;
2504 dma_addr_t dma_coherent_handle;
2505 /*
2506 ********************************************************************
2507 ** here we need to tell iop 331 our freeccb.HighPart
2508 ** if freeccb.HighPart is not zero
2509 ********************************************************************
2510 */
2511 dma_coherent_handle = acb->dma_coherent_handle;
2512 cdb_phyaddr = (uint32_t)(dma_coherent_handle);
2513 cdb_phyaddr_hi32 = (uint32_t)((cdb_phyaddr >> 16) >> 16);
2514 acb->cdb_phyaddr_hi32 = cdb_phyaddr_hi32;
2515 /*
2516 ***********************************************************************
2517 ** if adapter type B, set window of "post command Q"
2518 ***********************************************************************
2519 */
2520 switch (acb->adapter_type) {
2521
2522 case ACB_ADAPTER_TYPE_A: {
2523 if (cdb_phyaddr_hi32 != 0) {
2524 struct MessageUnit_A __iomem *reg = acb->pmuA;
2525 uint32_t intmask_org;
2526 intmask_org = arcmsr_disable_outbound_ints(acb);
2527 writel(ARCMSR_SIGNATURE_SET_CONFIG, \
2528 &reg->message_rwbuffer[0]);
2529 writel(cdb_phyaddr_hi32, &reg->message_rwbuffer[1]);
2530 writel(ARCMSR_INBOUND_MESG0_SET_CONFIG, \
2531 &reg->inbound_msgaddr0);
2532 if (!arcmsr_hba_wait_msgint_ready(acb)) {
2533 printk(KERN_NOTICE "arcmsr%d: ""set ccb high \
2534 part physical address timeout\n",
2535 acb->host->host_no);
2536 return 1;
2537 }
2538 arcmsr_enable_outbound_ints(acb, intmask_org);
2539 }
2540 }
2541 break;
2542
2543 case ACB_ADAPTER_TYPE_B: {
2544 unsigned long post_queue_phyaddr;
2545 uint32_t __iomem *rwbuffer;
2546
2547 struct MessageUnit_B *reg = acb->pmuB;
2548 uint32_t intmask_org;
2549 intmask_org = arcmsr_disable_outbound_ints(acb);
2550 reg->postq_index = 0;
2551 reg->doneq_index = 0;
2552 writel(ARCMSR_MESSAGE_SET_POST_WINDOW, reg->drv2iop_doorbell);
2553 if (!arcmsr_hbb_wait_msgint_ready(acb)) {
2554 printk(KERN_NOTICE "arcmsr%d:can not set diver mode\n", \
2555 acb->host->host_no);
2556 return 1;
2557 }
2558 post_queue_phyaddr = acb->dma_coherent_handle_hbb_mu;
2559 rwbuffer = reg->message_rwbuffer;
2560 /* driver "set config" signature */
2561 writel(ARCMSR_SIGNATURE_SET_CONFIG, rwbuffer++);
2562 /* normal should be zero */
2563 writel(cdb_phyaddr_hi32, rwbuffer++);
2564 /* postQ size (256 + 8)*4 */
2565 writel(post_queue_phyaddr, rwbuffer++);
2566 /* doneQ size (256 + 8)*4 */
2567 writel(post_queue_phyaddr + 1056, rwbuffer++);
2568 /* ccb maxQ size must be --> [(256 + 8)*4]*/
2569 writel(1056, rwbuffer);
2570
2571 writel(ARCMSR_MESSAGE_SET_CONFIG, reg->drv2iop_doorbell);
2572 if (!arcmsr_hbb_wait_msgint_ready(acb)) {
2573 printk(KERN_NOTICE "arcmsr%d: 'set command Q window' \
2574 timeout \n",acb->host->host_no);
2575 return 1;
2576 }
2577 arcmsr_hbb_enable_driver_mode(acb);
2578 arcmsr_enable_outbound_ints(acb, intmask_org);
2579 }
2580 break;
2581 case ACB_ADAPTER_TYPE_C: {
2582 if (cdb_phyaddr_hi32 != 0) {
2583 struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
2584
2585 printk(KERN_NOTICE "arcmsr%d: cdb_phyaddr_hi32=0x%x\n",
2586 acb->adapter_index, cdb_phyaddr_hi32);
2587 writel(ARCMSR_SIGNATURE_SET_CONFIG, &reg->msgcode_rwbuffer[0]);
2588 writel(cdb_phyaddr_hi32, &reg->msgcode_rwbuffer[1]);
2589 writel(ARCMSR_INBOUND_MESG0_SET_CONFIG, &reg->inbound_msgaddr0);
2590 writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
2591 if (!arcmsr_hbc_wait_msgint_ready(acb)) {
2592 printk(KERN_NOTICE "arcmsr%d: 'set command Q window' \
2593 timeout \n", acb->host->host_no);
2594 return 1;
2595 }
2596 }
2597 }
2598 }
2599 return 0;
2600 }
2601
2602 static void arcmsr_wait_firmware_ready(struct AdapterControlBlock *acb)
2603 {
2604 uint32_t firmware_state = 0;
2605 switch (acb->adapter_type) {
2606
2607 case ACB_ADAPTER_TYPE_A: {
2608 struct MessageUnit_A __iomem *reg = acb->pmuA;
2609 do {
2610 firmware_state = readl(&reg->outbound_msgaddr1);
2611 } while ((firmware_state & ARCMSR_OUTBOUND_MESG1_FIRMWARE_OK) == 0);
2612 }
2613 break;
2614
2615 case ACB_ADAPTER_TYPE_B: {
2616 struct MessageUnit_B *reg = acb->pmuB;
2617 do {
2618 firmware_state = readl(reg->iop2drv_doorbell);
2619 } while ((firmware_state & ARCMSR_MESSAGE_FIRMWARE_OK) == 0);
2620 writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT, reg->drv2iop_doorbell);
2621 }
2622 break;
2623 case ACB_ADAPTER_TYPE_C: {
2624 struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
2625 do {
2626 firmware_state = readl(&reg->outbound_msgaddr1);
2627 } while ((firmware_state & ARCMSR_HBCMU_MESSAGE_FIRMWARE_OK) == 0);
2628 }
2629 }
2630 }
2631
2632 static void arcmsr_request_hba_device_map(struct AdapterControlBlock *acb)
2633 {
2634 struct MessageUnit_A __iomem *reg = acb->pmuA;
2635 if (unlikely(atomic_read(&acb->rq_map_token) == 0) || ((acb->acb_flags & ACB_F_BUS_RESET) != 0 ) || ((acb->acb_flags & ACB_F_ABORT) != 0 )){
2636 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2637 return;
2638 } else {
2639 acb->fw_flag = FW_NORMAL;
2640 if (atomic_read(&acb->ante_token_value) == atomic_read(&acb->rq_map_token)){
2641 atomic_set(&acb->rq_map_token, 16);
2642 }
2643 atomic_set(&acb->ante_token_value, atomic_read(&acb->rq_map_token));
2644 if (atomic_dec_and_test(&acb->rq_map_token)) {
2645 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2646 return;
2647 }
2648 writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
2649 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2650 }
2651 return;
2652 }
2653
2654 static void arcmsr_request_hbb_device_map(struct AdapterControlBlock *acb)
2655 {
2656 struct MessageUnit_B __iomem *reg = acb->pmuB;
2657 if (unlikely(atomic_read(&acb->rq_map_token) == 0) || ((acb->acb_flags & ACB_F_BUS_RESET) != 0 ) || ((acb->acb_flags & ACB_F_ABORT) != 0 )){
2658 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2659 return;
2660 } else {
2661 acb->fw_flag = FW_NORMAL;
2662 if (atomic_read(&acb->ante_token_value) == atomic_read(&acb->rq_map_token)) {
2663 atomic_set(&acb->rq_map_token, 16);
2664 }
2665 atomic_set(&acb->ante_token_value, atomic_read(&acb->rq_map_token));
2666 if (atomic_dec_and_test(&acb->rq_map_token)) {
2667 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2668 return;
2669 }
2670 writel(ARCMSR_MESSAGE_GET_CONFIG, reg->drv2iop_doorbell);
2671 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2672 }
2673 return;
2674 }
2675
2676 static void arcmsr_request_hbc_device_map(struct AdapterControlBlock *acb)
2677 {
2678 struct MessageUnit_C __iomem *reg = acb->pmuC;
2679 if (unlikely(atomic_read(&acb->rq_map_token) == 0) || ((acb->acb_flags & ACB_F_BUS_RESET) != 0) || ((acb->acb_flags & ACB_F_ABORT) != 0)) {
2680 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2681 return;
2682 } else {
2683 acb->fw_flag = FW_NORMAL;
2684 if (atomic_read(&acb->ante_token_value) == atomic_read(&acb->rq_map_token)) {
2685 atomic_set(&acb->rq_map_token, 16);
2686 }
2687 atomic_set(&acb->ante_token_value, atomic_read(&acb->rq_map_token));
2688 if (atomic_dec_and_test(&acb->rq_map_token)) {
2689 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2690 return;
2691 }
2692 writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
2693 writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
2694 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2695 }
2696 return;
2697 }
2698
2699 static void arcmsr_request_device_map(unsigned long pacb)
2700 {
2701 struct AdapterControlBlock *acb = (struct AdapterControlBlock *)pacb;
2702 switch (acb->adapter_type) {
2703 case ACB_ADAPTER_TYPE_A: {
2704 arcmsr_request_hba_device_map(acb);
2705 }
2706 break;
2707 case ACB_ADAPTER_TYPE_B: {
2708 arcmsr_request_hbb_device_map(acb);
2709 }
2710 break;
2711 case ACB_ADAPTER_TYPE_C: {
2712 arcmsr_request_hbc_device_map(acb);
2713 }
2714 }
2715 }
2716
2717 static void arcmsr_start_hba_bgrb(struct AdapterControlBlock *acb)
2718 {
2719 struct MessageUnit_A __iomem *reg = acb->pmuA;
2720 acb->acb_flags |= ACB_F_MSG_START_BGRB;
2721 writel(ARCMSR_INBOUND_MESG0_START_BGRB, &reg->inbound_msgaddr0);
2722 if (!arcmsr_hba_wait_msgint_ready(acb)) {
2723 printk(KERN_NOTICE "arcmsr%d: wait 'start adapter background \
2724 rebulid' timeout \n", acb->host->host_no);
2725 }
2726 }
2727
2728 static void arcmsr_start_hbb_bgrb(struct AdapterControlBlock *acb)
2729 {
2730 struct MessageUnit_B *reg = acb->pmuB;
2731 acb->acb_flags |= ACB_F_MSG_START_BGRB;
2732 writel(ARCMSR_MESSAGE_START_BGRB, reg->drv2iop_doorbell);
2733 if (!arcmsr_hbb_wait_msgint_ready(acb)) {
2734 printk(KERN_NOTICE "arcmsr%d: wait 'start adapter background \
2735 rebulid' timeout \n",acb->host->host_no);
2736 }
2737 }
2738
2739 static void arcmsr_start_hbc_bgrb(struct AdapterControlBlock *pACB)
2740 {
2741 struct MessageUnit_C *phbcmu = (struct MessageUnit_C *)pACB->pmuC;
2742 pACB->acb_flags |= ACB_F_MSG_START_BGRB;
2743 writel(ARCMSR_INBOUND_MESG0_START_BGRB, &phbcmu->inbound_msgaddr0);
2744 writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &phbcmu->inbound_doorbell);
2745 if (!arcmsr_hbc_wait_msgint_ready(pACB)) {
2746 printk(KERN_NOTICE "arcmsr%d: wait 'start adapter background \
2747 rebulid' timeout \n", pACB->host->host_no);
2748 }
2749 return;
2750 }
2751 static void arcmsr_start_adapter_bgrb(struct AdapterControlBlock *acb)
2752 {
2753 switch (acb->adapter_type) {
2754 case ACB_ADAPTER_TYPE_A:
2755 arcmsr_start_hba_bgrb(acb);
2756 break;
2757 case ACB_ADAPTER_TYPE_B:
2758 arcmsr_start_hbb_bgrb(acb);
2759 break;
2760 case ACB_ADAPTER_TYPE_C:
2761 arcmsr_start_hbc_bgrb(acb);
2762 }
2763 }
2764
2765 static void arcmsr_clear_doorbell_queue_buffer(struct AdapterControlBlock *acb)
2766 {
2767 switch (acb->adapter_type) {
2768 case ACB_ADAPTER_TYPE_A: {
2769 struct MessageUnit_A __iomem *reg = acb->pmuA;
2770 uint32_t outbound_doorbell;
2771 /* empty doorbell Qbuffer if door bell ringed */
2772 outbound_doorbell = readl(&reg->outbound_doorbell);
2773 /*clear doorbell interrupt */
2774 writel(outbound_doorbell, &reg->outbound_doorbell);
2775 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, &reg->inbound_doorbell);
2776 }
2777 break;
2778
2779 case ACB_ADAPTER_TYPE_B: {
2780 struct MessageUnit_B *reg = acb->pmuB;
2781 /*clear interrupt and message state*/
2782 writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN, reg->iop2drv_doorbell);
2783 writel(ARCMSR_DRV2IOP_DATA_READ_OK, reg->drv2iop_doorbell);
2784 /* let IOP know data has been read */
2785 }
2786 break;
2787 case ACB_ADAPTER_TYPE_C: {
2788 struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
2789 uint32_t outbound_doorbell;
2790 /* empty doorbell Qbuffer if door bell ringed */
2791 outbound_doorbell = readl(&reg->outbound_doorbell);
2792 writel(outbound_doorbell, &reg->outbound_doorbell_clear);
2793 writel(ARCMSR_HBCMU_DRV2IOP_DATA_READ_OK, &reg->inbound_doorbell);
2794 }
2795 }
2796 }
2797
2798 static void arcmsr_enable_eoi_mode(struct AdapterControlBlock *acb)
2799 {
2800 switch (acb->adapter_type) {
2801 case ACB_ADAPTER_TYPE_A:
2802 return;
2803 case ACB_ADAPTER_TYPE_B:
2804 {
2805 struct MessageUnit_B *reg = acb->pmuB;
2806 writel(ARCMSR_MESSAGE_ACTIVE_EOI_MODE, reg->drv2iop_doorbell);
2807 if (!arcmsr_hbb_wait_msgint_ready(acb)) {
2808 printk(KERN_NOTICE "ARCMSR IOP enables EOI_MODE TIMEOUT");
2809 return;
2810 }
2811 }
2812 break;
2813 case ACB_ADAPTER_TYPE_C:
2814 return;
2815 }
2816 return;
2817 }
2818
2819 static void arcmsr_hardware_reset(struct AdapterControlBlock *acb)
2820 {
2821 uint8_t value[64];
2822 int i, count = 0;
2823 struct MessageUnit_A __iomem *pmuA = acb->pmuA;
2824 struct MessageUnit_C __iomem *pmuC = acb->pmuC;
2825 u32 temp = 0;
2826 /* backup pci config data */
2827 printk(KERN_NOTICE "arcmsr%d: executing hw bus reset .....\n", acb->host->host_no);
2828 for (i = 0; i < 64; i++) {
2829 pci_read_config_byte(acb->pdev, i, &value[i]);
2830 }
2831 /* hardware reset signal */
2832 if ((acb->dev_id == 0x1680)) {
2833 writel(ARCMSR_ARC1680_BUS_RESET, &pmuA->reserved1[0]);
2834 } else if ((acb->dev_id == 0x1880)) {
2835 do {
2836 count++;
2837 writel(0xF, &pmuC->write_sequence);
2838 writel(0x4, &pmuC->write_sequence);
2839 writel(0xB, &pmuC->write_sequence);
2840 writel(0x2, &pmuC->write_sequence);
2841 writel(0x7, &pmuC->write_sequence);
2842 writel(0xD, &pmuC->write_sequence);
2843 } while ((((temp = readl(&pmuC->host_diagnostic)) | ARCMSR_ARC1880_DiagWrite_ENABLE) == 0) && (count < 5));
2844 writel(ARCMSR_ARC1880_RESET_ADAPTER, &pmuC->host_diagnostic);
2845 } else {
2846 pci_write_config_byte(acb->pdev, 0x84, 0x20);
2847 }
2848 msleep(2000);
2849 /* write back pci config data */
2850 for (i = 0; i < 64; i++) {
2851 pci_write_config_byte(acb->pdev, i, value[i]);
2852 }
2853 msleep(1000);
2854 return;
2855 }
2856 static void arcmsr_iop_init(struct AdapterControlBlock *acb)
2857 {
2858 uint32_t intmask_org;
2859 /* disable all outbound interrupt */
2860 intmask_org = arcmsr_disable_outbound_ints(acb);
2861 arcmsr_wait_firmware_ready(acb);
2862 arcmsr_iop_confirm(acb);
2863 /*start background rebuild*/
2864 arcmsr_start_adapter_bgrb(acb);
2865 /* empty doorbell Qbuffer if door bell ringed */
2866 arcmsr_clear_doorbell_queue_buffer(acb);
2867 arcmsr_enable_eoi_mode(acb);
2868 /* enable outbound Post Queue,outbound doorbell Interrupt */
2869 arcmsr_enable_outbound_ints(acb, intmask_org);
2870 acb->acb_flags |= ACB_F_IOP_INITED;
2871 }
2872
2873 static uint8_t arcmsr_iop_reset(struct AdapterControlBlock *acb)
2874 {
2875 struct CommandControlBlock *ccb;
2876 uint32_t intmask_org;
2877 uint8_t rtnval = 0x00;
2878 int i = 0;
2879 unsigned long flags;
2880
2881 if (atomic_read(&acb->ccboutstandingcount) != 0) {
2882 /* disable all outbound interrupt */
2883 intmask_org = arcmsr_disable_outbound_ints(acb);
2884 /* talk to iop 331 outstanding command aborted */
2885 rtnval = arcmsr_abort_allcmd(acb);
2886 /* clear all outbound posted Q */
2887 arcmsr_done4abort_postqueue(acb);
2888 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
2889 ccb = acb->pccb_pool[i];
2890 if (ccb->startdone == ARCMSR_CCB_START) {
2891 scsi_dma_unmap(ccb->pcmd);
2892 ccb->startdone = ARCMSR_CCB_DONE;
2893 ccb->ccb_flags = 0;
2894 spin_lock_irqsave(&acb->ccblist_lock, flags);
2895 list_add_tail(&ccb->list, &acb->ccb_free_list);
2896 spin_unlock_irqrestore(&acb->ccblist_lock, flags);
2897 }
2898 }
2899 atomic_set(&acb->ccboutstandingcount, 0);
2900 /* enable all outbound interrupt */
2901 arcmsr_enable_outbound_ints(acb, intmask_org);
2902 return rtnval;
2903 }
2904 return rtnval;
2905 }
2906
2907 static int arcmsr_bus_reset(struct scsi_cmnd *cmd)
2908 {
2909 struct AdapterControlBlock *acb;
2910 uint32_t intmask_org, outbound_doorbell;
2911 int retry_count = 0;
2912 int rtn = FAILED;
2913 acb = (struct AdapterControlBlock *) cmd->device->host->hostdata;
2914 printk(KERN_ERR "arcmsr: executing bus reset eh.....num_resets = %d, num_aborts = %d \n", acb->num_resets, acb->num_aborts);
2915 acb->num_resets++;
2916
2917 switch(acb->adapter_type){
2918 case ACB_ADAPTER_TYPE_A:{
2919 if (acb->acb_flags & ACB_F_BUS_RESET){
2920 long timeout;
2921 printk(KERN_ERR "arcmsr: there is an bus reset eh proceeding.......\n");
2922 timeout = wait_event_timeout(wait_q, (acb->acb_flags & ACB_F_BUS_RESET) == 0, 220*HZ);
2923 if (timeout) {
2924 return SUCCESS;
2925 }
2926 }
2927 acb->acb_flags |= ACB_F_BUS_RESET;
2928 if (!arcmsr_iop_reset(acb)) {
2929 struct MessageUnit_A __iomem *reg;
2930 reg = acb->pmuA;
2931 arcmsr_hardware_reset(acb);
2932 acb->acb_flags &= ~ACB_F_IOP_INITED;
2933 sleep_again:
2934 ssleep(ARCMSR_SLEEPTIME);
2935 if ((readl(&reg->outbound_msgaddr1) & ARCMSR_OUTBOUND_MESG1_FIRMWARE_OK) == 0) {
2936 printk(KERN_ERR "arcmsr%d: waiting for hw bus reset return, retry=%d\n", acb->host->host_no, retry_count);
2937 if (retry_count > ARCMSR_RETRYCOUNT) {
2938 acb->fw_flag = FW_DEADLOCK;
2939 printk(KERN_ERR "arcmsr%d: waiting for hw bus reset return, RETRY TERMINATED!!\n", acb->host->host_no);
2940 return FAILED;
2941 }
2942 retry_count++;
2943 goto sleep_again;
2944 }
2945 acb->acb_flags |= ACB_F_IOP_INITED;
2946 /* disable all outbound interrupt */
2947 intmask_org = arcmsr_disable_outbound_ints(acb);
2948 arcmsr_get_firmware_spec(acb);
2949 arcmsr_start_adapter_bgrb(acb);
2950 /* clear Qbuffer if door bell ringed */
2951 outbound_doorbell = readl(&reg->outbound_doorbell);
2952 writel(outbound_doorbell, &reg->outbound_doorbell); /*clear interrupt */
2953 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, &reg->inbound_doorbell);
2954 /* enable outbound Post Queue,outbound doorbell Interrupt */
2955 arcmsr_enable_outbound_ints(acb, intmask_org);
2956 atomic_set(&acb->rq_map_token, 16);
2957 atomic_set(&acb->ante_token_value, 16);
2958 acb->fw_flag = FW_NORMAL;
2959 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2960 acb->acb_flags &= ~ACB_F_BUS_RESET;
2961 rtn = SUCCESS;
2962 printk(KERN_ERR "arcmsr: scsi bus reset eh returns with success\n");
2963 } else {
2964 acb->acb_flags &= ~ACB_F_BUS_RESET;
2965 atomic_set(&acb->rq_map_token, 16);
2966 atomic_set(&acb->ante_token_value, 16);
2967 acb->fw_flag = FW_NORMAL;
2968 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6*HZ));
2969 rtn = SUCCESS;
2970 }
2971 break;
2972 }
2973 case ACB_ADAPTER_TYPE_B:{
2974 acb->acb_flags |= ACB_F_BUS_RESET;
2975 if (!arcmsr_iop_reset(acb)) {
2976 acb->acb_flags &= ~ACB_F_BUS_RESET;
2977 rtn = FAILED;
2978 } else {
2979 acb->acb_flags &= ~ACB_F_BUS_RESET;
2980 atomic_set(&acb->rq_map_token, 16);
2981 atomic_set(&acb->ante_token_value, 16);
2982 acb->fw_flag = FW_NORMAL;
2983 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2984 rtn = SUCCESS;
2985 }
2986 break;
2987 }
2988 case ACB_ADAPTER_TYPE_C:{
2989 if (acb->acb_flags & ACB_F_BUS_RESET) {
2990 long timeout;
2991 printk(KERN_ERR "arcmsr: there is an bus reset eh proceeding.......\n");
2992 timeout = wait_event_timeout(wait_q, (acb->acb_flags & ACB_F_BUS_RESET) == 0, 220*HZ);
2993 if (timeout) {
2994 return SUCCESS;
2995 }
2996 }
2997 acb->acb_flags |= ACB_F_BUS_RESET;
2998 if (!arcmsr_iop_reset(acb)) {
2999 struct MessageUnit_C __iomem *reg;
3000 reg = acb->pmuC;
3001 arcmsr_hardware_reset(acb);
3002 acb->acb_flags &= ~ACB_F_IOP_INITED;
3003 sleep:
3004 ssleep(ARCMSR_SLEEPTIME);
3005 if ((readl(&reg->host_diagnostic) & 0x04) != 0) {
3006 printk(KERN_ERR "arcmsr%d: waiting for hw bus reset return, retry=%d\n", acb->host->host_no, retry_count);
3007 if (retry_count > ARCMSR_RETRYCOUNT) {
3008 acb->fw_flag = FW_DEADLOCK;
3009 printk(KERN_ERR "arcmsr%d: waiting for hw bus reset return, RETRY TERMINATED!!\n", acb->host->host_no);
3010 return FAILED;
3011 }
3012 retry_count++;
3013 goto sleep;
3014 }
3015 acb->acb_flags |= ACB_F_IOP_INITED;
3016 /* disable all outbound interrupt */
3017 intmask_org = arcmsr_disable_outbound_ints(acb);
3018 arcmsr_get_firmware_spec(acb);
3019 arcmsr_start_adapter_bgrb(acb);
3020 /* clear Qbuffer if door bell ringed */
3021 outbound_doorbell = readl(&reg->outbound_doorbell);
3022 writel(outbound_doorbell, &reg->outbound_doorbell_clear); /*clear interrupt */
3023 writel(ARCMSR_HBCMU_DRV2IOP_DATA_READ_OK, &reg->inbound_doorbell);
3024 /* enable outbound Post Queue,outbound doorbell Interrupt */
3025 arcmsr_enable_outbound_ints(acb, intmask_org);
3026 atomic_set(&acb->rq_map_token, 16);
3027 atomic_set(&acb->ante_token_value, 16);
3028 acb->fw_flag = FW_NORMAL;
3029 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
3030 acb->acb_flags &= ~ACB_F_BUS_RESET;
3031 rtn = SUCCESS;
3032 printk(KERN_ERR "arcmsr: scsi bus reset eh returns with success\n");
3033 } else {
3034 acb->acb_flags &= ~ACB_F_BUS_RESET;
3035 atomic_set(&acb->rq_map_token, 16);
3036 atomic_set(&acb->ante_token_value, 16);
3037 acb->fw_flag = FW_NORMAL;
3038 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6*HZ));
3039 rtn = SUCCESS;
3040 }
3041 break;
3042 }
3043 }
3044 return rtn;
3045 }
3046
3047 static int arcmsr_abort_one_cmd(struct AdapterControlBlock *acb,
3048 struct CommandControlBlock *ccb)
3049 {
3050 int rtn;
3051 rtn = arcmsr_polling_ccbdone(acb, ccb);
3052 return rtn;
3053 }
3054
3055 static int arcmsr_abort(struct scsi_cmnd *cmd)
3056 {
3057 struct AdapterControlBlock *acb =
3058 (struct AdapterControlBlock *)cmd->device->host->hostdata;
3059 int i = 0;
3060 int rtn = FAILED;
3061 printk(KERN_NOTICE
3062 "arcmsr%d: abort device command of scsi id = %d lun = %d \n",
3063 acb->host->host_no, cmd->device->id, cmd->device->lun);
3064 acb->acb_flags |= ACB_F_ABORT;
3065 acb->num_aborts++;
3066 /*
3067 ************************************************
3068 ** the all interrupt service routine is locked
3069 ** we need to handle it as soon as possible and exit
3070 ************************************************
3071 */
3072 if (!atomic_read(&acb->ccboutstandingcount))
3073 return rtn;
3074
3075 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
3076 struct CommandControlBlock *ccb = acb->pccb_pool[i];
3077 if (ccb->startdone == ARCMSR_CCB_START && ccb->pcmd == cmd) {
3078 ccb->startdone = ARCMSR_CCB_ABORTED;
3079 rtn = arcmsr_abort_one_cmd(acb, ccb);
3080 break;
3081 }
3082 }
3083 acb->acb_flags &= ~ACB_F_ABORT;
3084 return rtn;
3085 }
3086
3087 static const char *arcmsr_info(struct Scsi_Host *host)
3088 {
3089 struct AdapterControlBlock *acb =
3090 (struct AdapterControlBlock *) host->hostdata;
3091 static char buf[256];
3092 char *type;
3093 int raid6 = 1;
3094 switch (acb->pdev->device) {
3095 case PCI_DEVICE_ID_ARECA_1110:
3096 case PCI_DEVICE_ID_ARECA_1200:
3097 case PCI_DEVICE_ID_ARECA_1202:
3098 case PCI_DEVICE_ID_ARECA_1210:
3099 raid6 = 0;
3100 /*FALLTHRU*/
3101 case PCI_DEVICE_ID_ARECA_1120:
3102 case PCI_DEVICE_ID_ARECA_1130:
3103 case PCI_DEVICE_ID_ARECA_1160:
3104 case PCI_DEVICE_ID_ARECA_1170:
3105 case PCI_DEVICE_ID_ARECA_1201:
3106 case PCI_DEVICE_ID_ARECA_1220:
3107 case PCI_DEVICE_ID_ARECA_1230:
3108 case PCI_DEVICE_ID_ARECA_1260:
3109 case PCI_DEVICE_ID_ARECA_1270:
3110 case PCI_DEVICE_ID_ARECA_1280:
3111 type = "SATA";
3112 break;
3113 case PCI_DEVICE_ID_ARECA_1380:
3114 case PCI_DEVICE_ID_ARECA_1381:
3115 case PCI_DEVICE_ID_ARECA_1680:
3116 case PCI_DEVICE_ID_ARECA_1681:
3117 case PCI_DEVICE_ID_ARECA_1880:
3118 type = "SAS";
3119 break;
3120 default:
3121 type = "X-TYPE";
3122 break;
3123 }
3124 sprintf(buf, "Areca %s Host Adapter RAID Controller%s\n %s",
3125 type, raid6 ? "( RAID6 capable)" : "",
3126 ARCMSR_DRIVER_VERSION);
3127 return buf;
3128 }
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree