Version:  2.0.40 2.2.26 2.4.37 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16

Linux/drivers/scsi/arcmsr/arcmsr_hba.c

  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/uaccess.h>
 65 #include <scsi/scsi_host.h>
 66 #include <scsi/scsi.h>
 67 #include <scsi/scsi_cmnd.h>
 68 #include <scsi/scsi_tcq.h>
 69 #include <scsi/scsi_device.h>
 70 #include <scsi/scsi_transport.h>
 71 #include <scsi/scsicam.h>
 72 #include "arcmsr.h"
 73 MODULE_AUTHOR("Nick Cheng <support@areca.com.tw>");
 74 MODULE_DESCRIPTION("ARECA (ARC11xx/12xx/16xx/1880) SATA/SAS RAID Host Bus Adapter");
 75 MODULE_LICENSE("Dual BSD/GPL");
 76 MODULE_VERSION(ARCMSR_DRIVER_VERSION);
 77 
 78 #define ARCMSR_SLEEPTIME        10
 79 #define ARCMSR_RETRYCOUNT       12
 80 
 81 wait_queue_head_t wait_q;
 82 static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb,
 83                                         struct scsi_cmnd *cmd);
 84 static int arcmsr_iop_confirm(struct AdapterControlBlock *acb);
 85 static int arcmsr_abort(struct scsi_cmnd *);
 86 static int arcmsr_bus_reset(struct scsi_cmnd *);
 87 static int arcmsr_bios_param(struct scsi_device *sdev,
 88                 struct block_device *bdev, sector_t capacity, int *info);
 89 static int arcmsr_queue_command(struct Scsi_Host *h, struct scsi_cmnd *cmd);
 90 static int arcmsr_probe(struct pci_dev *pdev,
 91                                 const struct pci_device_id *id);
 92 static void arcmsr_remove(struct pci_dev *pdev);
 93 static void arcmsr_shutdown(struct pci_dev *pdev);
 94 static void arcmsr_iop_init(struct AdapterControlBlock *acb);
 95 static void arcmsr_free_ccb_pool(struct AdapterControlBlock *acb);
 96 static u32 arcmsr_disable_outbound_ints(struct AdapterControlBlock *acb);
 97 static void arcmsr_stop_adapter_bgrb(struct AdapterControlBlock *acb);
 98 static void arcmsr_flush_hba_cache(struct AdapterControlBlock *acb);
 99 static void arcmsr_flush_hbb_cache(struct AdapterControlBlock *acb);
100 static void arcmsr_request_device_map(unsigned long pacb);
101 static void arcmsr_request_hba_device_map(struct AdapterControlBlock *acb);
102 static void arcmsr_request_hbb_device_map(struct AdapterControlBlock *acb);
103 static void arcmsr_request_hbc_device_map(struct AdapterControlBlock *acb);
104 static void arcmsr_message_isr_bh_fn(struct work_struct *work);
105 static bool arcmsr_get_firmware_spec(struct AdapterControlBlock *acb);
106 static void arcmsr_start_adapter_bgrb(struct AdapterControlBlock *acb);
107 static void arcmsr_hbc_message_isr(struct AdapterControlBlock *pACB);
108 static void arcmsr_hardware_reset(struct AdapterControlBlock *acb);
109 static const char *arcmsr_info(struct Scsi_Host *);
110 static irqreturn_t arcmsr_interrupt(struct AdapterControlBlock *acb);
111 static int arcmsr_adjust_disk_queue_depth(struct scsi_device *sdev,
112                                           int queue_depth, int reason)
113 {
114         if (reason != SCSI_QDEPTH_DEFAULT)
115                 return -EOPNOTSUPP;
116 
117         if (queue_depth > ARCMSR_MAX_CMD_PERLUN)
118                 queue_depth = ARCMSR_MAX_CMD_PERLUN;
119         scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG, queue_depth);
120         return queue_depth;
121 }
122 
123 static struct scsi_host_template arcmsr_scsi_host_template = {
124         .module                 = THIS_MODULE,
125         .name                   = "ARCMSR ARECA SATA/SAS RAID Controller"
126                                 ARCMSR_DRIVER_VERSION,
127         .info                   = arcmsr_info,
128         .queuecommand           = arcmsr_queue_command,
129         .eh_abort_handler               = arcmsr_abort,
130         .eh_bus_reset_handler   = arcmsr_bus_reset,
131         .bios_param             = arcmsr_bios_param,
132         .change_queue_depth     = arcmsr_adjust_disk_queue_depth,
133         .can_queue              = ARCMSR_MAX_FREECCB_NUM,
134         .this_id                        = ARCMSR_SCSI_INITIATOR_ID,
135         .sg_tablesize                   = ARCMSR_DEFAULT_SG_ENTRIES, 
136         .max_sectors                    = ARCMSR_MAX_XFER_SECTORS_C, 
137         .cmd_per_lun            = ARCMSR_MAX_CMD_PERLUN,
138         .use_clustering         = ENABLE_CLUSTERING,
139         .shost_attrs            = arcmsr_host_attrs,
140         .no_write_same          = 1,
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(&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 }
1040 
1041 static void arcmsr_shutdown(struct pci_dev *pdev)
1042 {
1043         struct Scsi_Host *host = pci_get_drvdata(pdev);
1044         struct AdapterControlBlock *acb =
1045                 (struct AdapterControlBlock *)host->hostdata;
1046         del_timer_sync(&acb->eternal_timer);
1047         arcmsr_disable_outbound_ints(acb);
1048         flush_work(&acb->arcmsr_do_message_isr_bh);
1049         arcmsr_stop_adapter_bgrb(acb);
1050         arcmsr_flush_adapter_cache(acb);
1051 }
1052 
1053 static int arcmsr_module_init(void)
1054 {
1055         int error = 0;
1056         error = pci_register_driver(&arcmsr_pci_driver);
1057         return error;
1058 }
1059 
1060 static void arcmsr_module_exit(void)
1061 {
1062         pci_unregister_driver(&arcmsr_pci_driver);
1063 }
1064 module_init(arcmsr_module_init);
1065 module_exit(arcmsr_module_exit);
1066 
1067 static void arcmsr_enable_outbound_ints(struct AdapterControlBlock *acb,
1068                                                 u32 intmask_org)
1069 {
1070         u32 mask;
1071         switch (acb->adapter_type) {
1072 
1073         case ACB_ADAPTER_TYPE_A: {
1074                 struct MessageUnit_A __iomem *reg = acb->pmuA;
1075                 mask = intmask_org & ~(ARCMSR_MU_OUTBOUND_POSTQUEUE_INTMASKENABLE |
1076                              ARCMSR_MU_OUTBOUND_DOORBELL_INTMASKENABLE|
1077                              ARCMSR_MU_OUTBOUND_MESSAGE0_INTMASKENABLE);
1078                 writel(mask, &reg->outbound_intmask);
1079                 acb->outbound_int_enable = ~(intmask_org & mask) & 0x000000ff;
1080                 }
1081                 break;
1082 
1083         case ACB_ADAPTER_TYPE_B: {
1084                 struct MessageUnit_B *reg = acb->pmuB;
1085                 mask = intmask_org | (ARCMSR_IOP2DRV_DATA_WRITE_OK |
1086                         ARCMSR_IOP2DRV_DATA_READ_OK |
1087                         ARCMSR_IOP2DRV_CDB_DONE |
1088                         ARCMSR_IOP2DRV_MESSAGE_CMD_DONE);
1089                 writel(mask, reg->iop2drv_doorbell_mask);
1090                 acb->outbound_int_enable = (intmask_org | mask) & 0x0000000f;
1091                 }
1092                 break;
1093         case ACB_ADAPTER_TYPE_C: {
1094                 struct MessageUnit_C *reg = acb->pmuC;
1095                 mask = ~(ARCMSR_HBCMU_UTILITY_A_ISR_MASK | ARCMSR_HBCMU_OUTBOUND_DOORBELL_ISR_MASK|ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR_MASK);
1096                 writel(intmask_org & mask, &reg->host_int_mask);
1097                 acb->outbound_int_enable = ~(intmask_org & mask) & 0x0000000f;
1098                 }
1099         }
1100 }
1101 
1102 static int arcmsr_build_ccb(struct AdapterControlBlock *acb,
1103         struct CommandControlBlock *ccb, struct scsi_cmnd *pcmd)
1104 {
1105         struct ARCMSR_CDB *arcmsr_cdb = (struct ARCMSR_CDB *)&ccb->arcmsr_cdb;
1106         int8_t *psge = (int8_t *)&arcmsr_cdb->u;
1107         __le32 address_lo, address_hi;
1108         int arccdbsize = 0x30;
1109         __le32 length = 0;
1110         int i;
1111         struct scatterlist *sg;
1112         int nseg;
1113         ccb->pcmd = pcmd;
1114         memset(arcmsr_cdb, 0, sizeof(struct ARCMSR_CDB));
1115         arcmsr_cdb->TargetID = pcmd->device->id;
1116         arcmsr_cdb->LUN = pcmd->device->lun;
1117         arcmsr_cdb->Function = 1;
1118         arcmsr_cdb->Context = 0;
1119         memcpy(arcmsr_cdb->Cdb, pcmd->cmnd, pcmd->cmd_len);
1120 
1121         nseg = scsi_dma_map(pcmd);
1122         if (unlikely(nseg > acb->host->sg_tablesize || nseg < 0))
1123                 return FAILED;
1124         scsi_for_each_sg(pcmd, sg, nseg, i) {
1125                 /* Get the physical address of the current data pointer */
1126                 length = cpu_to_le32(sg_dma_len(sg));
1127                 address_lo = cpu_to_le32(dma_addr_lo32(sg_dma_address(sg)));
1128                 address_hi = cpu_to_le32(dma_addr_hi32(sg_dma_address(sg)));
1129                 if (address_hi == 0) {
1130                         struct SG32ENTRY *pdma_sg = (struct SG32ENTRY *)psge;
1131 
1132                         pdma_sg->address = address_lo;
1133                         pdma_sg->length = length;
1134                         psge += sizeof (struct SG32ENTRY);
1135                         arccdbsize += sizeof (struct SG32ENTRY);
1136                 } else {
1137                         struct SG64ENTRY *pdma_sg = (struct SG64ENTRY *)psge;
1138 
1139                         pdma_sg->addresshigh = address_hi;
1140                         pdma_sg->address = address_lo;
1141                         pdma_sg->length = length|cpu_to_le32(IS_SG64_ADDR);
1142                         psge += sizeof (struct SG64ENTRY);
1143                         arccdbsize += sizeof (struct SG64ENTRY);
1144                 }
1145         }
1146         arcmsr_cdb->sgcount = (uint8_t)nseg;
1147         arcmsr_cdb->DataLength = scsi_bufflen(pcmd);
1148         arcmsr_cdb->msgPages = arccdbsize/0x100 + (arccdbsize % 0x100 ? 1 : 0);
1149         if ( arccdbsize > 256)
1150                 arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_SGL_BSIZE;
1151         if (pcmd->sc_data_direction == DMA_TO_DEVICE)
1152                 arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_WRITE;
1153         ccb->arc_cdb_size = arccdbsize;
1154         return SUCCESS;
1155 }
1156 
1157 static void arcmsr_post_ccb(struct AdapterControlBlock *acb, struct CommandControlBlock *ccb)
1158 {
1159         uint32_t cdb_phyaddr_pattern = ccb->cdb_phyaddr_pattern;
1160         struct ARCMSR_CDB *arcmsr_cdb = (struct ARCMSR_CDB *)&ccb->arcmsr_cdb;
1161         atomic_inc(&acb->ccboutstandingcount);
1162         ccb->startdone = ARCMSR_CCB_START;
1163         switch (acb->adapter_type) {
1164         case ACB_ADAPTER_TYPE_A: {
1165                 struct MessageUnit_A __iomem *reg = acb->pmuA;
1166 
1167                 if (arcmsr_cdb->Flags & ARCMSR_CDB_FLAG_SGL_BSIZE)
1168                         writel(cdb_phyaddr_pattern | ARCMSR_CCBPOST_FLAG_SGL_BSIZE,
1169                         &reg->inbound_queueport);
1170                 else {
1171                                 writel(cdb_phyaddr_pattern, &reg->inbound_queueport);
1172                 }
1173                 }
1174                 break;
1175 
1176         case ACB_ADAPTER_TYPE_B: {
1177                 struct MessageUnit_B *reg = acb->pmuB;
1178                 uint32_t ending_index, index = reg->postq_index;
1179 
1180                 ending_index = ((index + 1) % ARCMSR_MAX_HBB_POSTQUEUE);
1181                 writel(0, &reg->post_qbuffer[ending_index]);
1182                 if (arcmsr_cdb->Flags & ARCMSR_CDB_FLAG_SGL_BSIZE) {
1183                         writel(cdb_phyaddr_pattern | ARCMSR_CCBPOST_FLAG_SGL_BSIZE,\
1184                                                  &reg->post_qbuffer[index]);
1185                 } else {
1186                         writel(cdb_phyaddr_pattern, &reg->post_qbuffer[index]);
1187                 }
1188                 index++;
1189                 index %= ARCMSR_MAX_HBB_POSTQUEUE;/*if last index number set it to 0 */
1190                 reg->postq_index = index;
1191                 writel(ARCMSR_DRV2IOP_CDB_POSTED, reg->drv2iop_doorbell);
1192                 }
1193                 break;
1194         case ACB_ADAPTER_TYPE_C: {
1195                 struct MessageUnit_C *phbcmu = (struct MessageUnit_C *)acb->pmuC;
1196                 uint32_t ccb_post_stamp, arc_cdb_size;
1197 
1198                 arc_cdb_size = (ccb->arc_cdb_size > 0x300) ? 0x300 : ccb->arc_cdb_size;
1199                 ccb_post_stamp = (cdb_phyaddr_pattern | ((arc_cdb_size - 1) >> 6) | 1);
1200                 if (acb->cdb_phyaddr_hi32) {
1201                         writel(acb->cdb_phyaddr_hi32, &phbcmu->inbound_queueport_high);
1202                         writel(ccb_post_stamp, &phbcmu->inbound_queueport_low);
1203                 } else {
1204                         writel(ccb_post_stamp, &phbcmu->inbound_queueport_low);
1205                 }
1206                 }
1207         }
1208 }
1209 
1210 static void arcmsr_stop_hba_bgrb(struct AdapterControlBlock *acb)
1211 {
1212         struct MessageUnit_A __iomem *reg = acb->pmuA;
1213         acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
1214         writel(ARCMSR_INBOUND_MESG0_STOP_BGRB, &reg->inbound_msgaddr0);
1215         if (!arcmsr_hba_wait_msgint_ready(acb)) {
1216                 printk(KERN_NOTICE
1217                         "arcmsr%d: wait 'stop adapter background rebulid' timeout \n"
1218                         , acb->host->host_no);
1219         }
1220 }
1221 
1222 static void arcmsr_stop_hbb_bgrb(struct AdapterControlBlock *acb)
1223 {
1224         struct MessageUnit_B *reg = acb->pmuB;
1225         acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
1226         writel(ARCMSR_MESSAGE_STOP_BGRB, reg->drv2iop_doorbell);
1227 
1228         if (!arcmsr_hbb_wait_msgint_ready(acb)) {
1229                 printk(KERN_NOTICE
1230                         "arcmsr%d: wait 'stop adapter background rebulid' timeout \n"
1231                         , acb->host->host_no);
1232         }
1233 }
1234 
1235 static void arcmsr_stop_hbc_bgrb(struct AdapterControlBlock *pACB)
1236 {
1237         struct MessageUnit_C *reg = (struct MessageUnit_C *)pACB->pmuC;
1238         pACB->acb_flags &= ~ACB_F_MSG_START_BGRB;
1239         writel(ARCMSR_INBOUND_MESG0_STOP_BGRB, &reg->inbound_msgaddr0);
1240         writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
1241         if (!arcmsr_hbc_wait_msgint_ready(pACB)) {
1242                 printk(KERN_NOTICE
1243                         "arcmsr%d: wait 'stop adapter background rebulid' timeout \n"
1244                         , pACB->host->host_no);
1245         }
1246         return;
1247 }
1248 static void arcmsr_stop_adapter_bgrb(struct AdapterControlBlock *acb)
1249 {
1250         switch (acb->adapter_type) {
1251         case ACB_ADAPTER_TYPE_A: {
1252                 arcmsr_stop_hba_bgrb(acb);
1253                 }
1254                 break;
1255 
1256         case ACB_ADAPTER_TYPE_B: {
1257                 arcmsr_stop_hbb_bgrb(acb);
1258                 }
1259                 break;
1260         case ACB_ADAPTER_TYPE_C: {
1261                 arcmsr_stop_hbc_bgrb(acb);
1262                 }
1263         }
1264 }
1265 
1266 static void arcmsr_free_ccb_pool(struct AdapterControlBlock *acb)
1267 {
1268         dma_free_coherent(&acb->pdev->dev, acb->uncache_size, acb->dma_coherent, acb->dma_coherent_handle);
1269 }
1270 
1271 void arcmsr_iop_message_read(struct AdapterControlBlock *acb)
1272 {
1273         switch (acb->adapter_type) {
1274         case ACB_ADAPTER_TYPE_A: {
1275                 struct MessageUnit_A __iomem *reg = acb->pmuA;
1276                 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, &reg->inbound_doorbell);
1277                 }
1278                 break;
1279 
1280         case ACB_ADAPTER_TYPE_B: {
1281                 struct MessageUnit_B *reg = acb->pmuB;
1282                 writel(ARCMSR_DRV2IOP_DATA_READ_OK, reg->drv2iop_doorbell);
1283                 }
1284                 break;
1285         case ACB_ADAPTER_TYPE_C: {
1286                 struct MessageUnit_C __iomem *reg = acb->pmuC;
1287                 writel(ARCMSR_HBCMU_DRV2IOP_DATA_READ_OK, &reg->inbound_doorbell);
1288                 }
1289         }
1290 }
1291 
1292 static void arcmsr_iop_message_wrote(struct AdapterControlBlock *acb)
1293 {
1294         switch (acb->adapter_type) {
1295         case ACB_ADAPTER_TYPE_A: {
1296                 struct MessageUnit_A __iomem *reg = acb->pmuA;
1297                 /*
1298                 ** push inbound doorbell tell iop, driver data write ok
1299                 ** and wait reply on next hwinterrupt for next Qbuffer post
1300                 */
1301                 writel(ARCMSR_INBOUND_DRIVER_DATA_WRITE_OK, &reg->inbound_doorbell);
1302                 }
1303                 break;
1304 
1305         case ACB_ADAPTER_TYPE_B: {
1306                 struct MessageUnit_B *reg = acb->pmuB;
1307                 /*
1308                 ** push inbound doorbell tell iop, driver data write ok
1309                 ** and wait reply on next hwinterrupt for next Qbuffer post
1310                 */
1311                 writel(ARCMSR_DRV2IOP_DATA_WRITE_OK, reg->drv2iop_doorbell);
1312                 }
1313                 break;
1314         case ACB_ADAPTER_TYPE_C: {
1315                 struct MessageUnit_C __iomem *reg = acb->pmuC;
1316                 /*
1317                 ** push inbound doorbell tell iop, driver data write ok
1318                 ** and wait reply on next hwinterrupt for next Qbuffer post
1319                 */
1320                 writel(ARCMSR_HBCMU_DRV2IOP_DATA_WRITE_OK, &reg->inbound_doorbell);
1321                 }
1322                 break;
1323         }
1324 }
1325 
1326 struct QBUFFER __iomem *arcmsr_get_iop_rqbuffer(struct AdapterControlBlock *acb)
1327 {
1328         struct QBUFFER __iomem *qbuffer = NULL;
1329         switch (acb->adapter_type) {
1330 
1331         case ACB_ADAPTER_TYPE_A: {
1332                 struct MessageUnit_A __iomem *reg = acb->pmuA;
1333                 qbuffer = (struct QBUFFER __iomem *)&reg->message_rbuffer;
1334                 }
1335                 break;
1336 
1337         case ACB_ADAPTER_TYPE_B: {
1338                 struct MessageUnit_B *reg = acb->pmuB;
1339                 qbuffer = (struct QBUFFER __iomem *)reg->message_rbuffer;
1340                 }
1341                 break;
1342         case ACB_ADAPTER_TYPE_C: {
1343                 struct MessageUnit_C *phbcmu = (struct MessageUnit_C *)acb->pmuC;
1344                 qbuffer = (struct QBUFFER __iomem *)&phbcmu->message_rbuffer;
1345                 }
1346         }
1347         return qbuffer;
1348 }
1349 
1350 static struct QBUFFER __iomem *arcmsr_get_iop_wqbuffer(struct AdapterControlBlock *acb)
1351 {
1352         struct QBUFFER __iomem *pqbuffer = NULL;
1353         switch (acb->adapter_type) {
1354 
1355         case ACB_ADAPTER_TYPE_A: {
1356                 struct MessageUnit_A __iomem *reg = acb->pmuA;
1357                 pqbuffer = (struct QBUFFER __iomem *) &reg->message_wbuffer;
1358                 }
1359                 break;
1360 
1361         case ACB_ADAPTER_TYPE_B: {
1362                 struct MessageUnit_B  *reg = acb->pmuB;
1363                 pqbuffer = (struct QBUFFER __iomem *)reg->message_wbuffer;
1364                 }
1365                 break;
1366         case ACB_ADAPTER_TYPE_C: {
1367                 struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
1368                 pqbuffer = (struct QBUFFER __iomem *)&reg->message_wbuffer;
1369         }
1370 
1371         }
1372         return pqbuffer;
1373 }
1374 
1375 static void arcmsr_iop2drv_data_wrote_handle(struct AdapterControlBlock *acb)
1376 {
1377         struct QBUFFER __iomem *prbuffer;
1378         struct QBUFFER *pQbuffer;
1379         uint8_t __iomem *iop_data;
1380         int32_t my_empty_len, iop_len, rqbuf_firstindex, rqbuf_lastindex;
1381         rqbuf_lastindex = acb->rqbuf_lastindex;
1382         rqbuf_firstindex = acb->rqbuf_firstindex;
1383         prbuffer = arcmsr_get_iop_rqbuffer(acb);
1384         iop_data = (uint8_t __iomem *)prbuffer->data;
1385         iop_len = prbuffer->data_len;
1386         my_empty_len = (rqbuf_firstindex - rqbuf_lastindex - 1) & (ARCMSR_MAX_QBUFFER - 1);
1387 
1388         if (my_empty_len >= iop_len)
1389         {
1390                 while (iop_len > 0) {
1391                         pQbuffer = (struct QBUFFER *)&acb->rqbuffer[rqbuf_lastindex];
1392                         memcpy(pQbuffer, iop_data, 1);
1393                         rqbuf_lastindex++;
1394                         rqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
1395                         iop_data++;
1396                         iop_len--;
1397                 }
1398                 acb->rqbuf_lastindex = rqbuf_lastindex;
1399                 arcmsr_iop_message_read(acb);
1400         }
1401 
1402         else {
1403                 acb->acb_flags |= ACB_F_IOPDATA_OVERFLOW;
1404         }
1405 }
1406 
1407 static void arcmsr_iop2drv_data_read_handle(struct AdapterControlBlock *acb)
1408 {
1409         acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_READED;
1410         if (acb->wqbuf_firstindex != acb->wqbuf_lastindex) {
1411                 uint8_t *pQbuffer;
1412                 struct QBUFFER __iomem *pwbuffer;
1413                 uint8_t __iomem *iop_data;
1414                 int32_t allxfer_len = 0;
1415 
1416                 acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED);
1417                 pwbuffer = arcmsr_get_iop_wqbuffer(acb);
1418                 iop_data = (uint8_t __iomem *)pwbuffer->data;
1419 
1420                 while ((acb->wqbuf_firstindex != acb->wqbuf_lastindex) && \
1421                                                         (allxfer_len < 124)) {
1422                         pQbuffer = &acb->wqbuffer[acb->wqbuf_firstindex];
1423                         memcpy(iop_data, pQbuffer, 1);
1424                         acb->wqbuf_firstindex++;
1425                         acb->wqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
1426                         iop_data++;
1427                         allxfer_len++;
1428                 }
1429                 pwbuffer->data_len = allxfer_len;
1430 
1431                 arcmsr_iop_message_wrote(acb);
1432         }
1433 
1434         if (acb->wqbuf_firstindex == acb->wqbuf_lastindex) {
1435                 acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_CLEARED;
1436         }
1437 }
1438 
1439 static void arcmsr_hba_doorbell_isr(struct AdapterControlBlock *acb)
1440 {
1441         uint32_t outbound_doorbell;
1442         struct MessageUnit_A __iomem *reg = acb->pmuA;
1443         outbound_doorbell = readl(&reg->outbound_doorbell);
1444         writel(outbound_doorbell, &reg->outbound_doorbell);
1445         if (outbound_doorbell & ARCMSR_OUTBOUND_IOP331_DATA_WRITE_OK) {
1446                 arcmsr_iop2drv_data_wrote_handle(acb);
1447         }
1448 
1449         if (outbound_doorbell & ARCMSR_OUTBOUND_IOP331_DATA_READ_OK) {
1450                 arcmsr_iop2drv_data_read_handle(acb);
1451         }
1452 }
1453 static void arcmsr_hbc_doorbell_isr(struct AdapterControlBlock *pACB)
1454 {
1455         uint32_t outbound_doorbell;
1456         struct MessageUnit_C *reg = (struct MessageUnit_C *)pACB->pmuC;
1457         /*
1458         *******************************************************************
1459         **  Maybe here we need to check wrqbuffer_lock is lock or not
1460         **  DOORBELL: din! don!
1461         **  check if there are any mail need to pack from firmware
1462         *******************************************************************
1463         */
1464         outbound_doorbell = readl(&reg->outbound_doorbell);
1465         writel(outbound_doorbell, &reg->outbound_doorbell_clear);/*clear interrupt*/
1466         if (outbound_doorbell & ARCMSR_HBCMU_IOP2DRV_DATA_WRITE_OK) {
1467                 arcmsr_iop2drv_data_wrote_handle(pACB);
1468         }
1469         if (outbound_doorbell & ARCMSR_HBCMU_IOP2DRV_DATA_READ_OK) {
1470                 arcmsr_iop2drv_data_read_handle(pACB);
1471         }
1472         if (outbound_doorbell & ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE) {
1473                 arcmsr_hbc_message_isr(pACB);    /* messenger of "driver to iop commands" */
1474         }
1475         return;
1476 }
1477 static void arcmsr_hba_postqueue_isr(struct AdapterControlBlock *acb)
1478 {
1479         uint32_t flag_ccb;
1480         struct MessageUnit_A __iomem *reg = acb->pmuA;
1481         struct ARCMSR_CDB *pARCMSR_CDB;
1482         struct CommandControlBlock *pCCB;
1483         bool error;
1484         while ((flag_ccb = readl(&reg->outbound_queueport)) != 0xFFFFFFFF) {
1485                 pARCMSR_CDB = (struct ARCMSR_CDB *)(acb->vir2phy_offset + (flag_ccb << 5));/*frame must be 32 bytes aligned*/
1486                 pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
1487                 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
1488                 arcmsr_drain_donequeue(acb, pCCB, error);
1489         }
1490 }
1491 static void arcmsr_hbb_postqueue_isr(struct AdapterControlBlock *acb)
1492 {
1493         uint32_t index;
1494         uint32_t flag_ccb;
1495         struct MessageUnit_B *reg = acb->pmuB;
1496         struct ARCMSR_CDB *pARCMSR_CDB;
1497         struct CommandControlBlock *pCCB;
1498         bool error;
1499         index = reg->doneq_index;
1500         while ((flag_ccb = readl(&reg->done_qbuffer[index])) != 0) {
1501                 writel(0, &reg->done_qbuffer[index]);
1502                 pARCMSR_CDB = (struct ARCMSR_CDB *)(acb->vir2phy_offset+(flag_ccb << 5));/*frame must be 32 bytes aligned*/
1503                 pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
1504                 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
1505                 arcmsr_drain_donequeue(acb, pCCB, error);
1506                 index++;
1507                 index %= ARCMSR_MAX_HBB_POSTQUEUE;
1508                 reg->doneq_index = index;
1509         }
1510 }
1511 
1512 static void arcmsr_hbc_postqueue_isr(struct AdapterControlBlock *acb)
1513 {
1514         struct MessageUnit_C *phbcmu;
1515         struct ARCMSR_CDB *arcmsr_cdb;
1516         struct CommandControlBlock *ccb;
1517         uint32_t flag_ccb, ccb_cdb_phy, throttling = 0;
1518         int error;
1519 
1520         phbcmu = (struct MessageUnit_C *)acb->pmuC;
1521         /* areca cdb command done */
1522         /* Use correct offset and size for syncing */
1523 
1524         while (readl(&phbcmu->host_int_status) &
1525         ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR){
1526         /* check if command done with no error*/
1527         flag_ccb = readl(&phbcmu->outbound_queueport_low);
1528         ccb_cdb_phy = (flag_ccb & 0xFFFFFFF0);/*frame must be 32 bytes aligned*/
1529         arcmsr_cdb = (struct ARCMSR_CDB *)(acb->vir2phy_offset + ccb_cdb_phy);
1530         ccb = container_of(arcmsr_cdb, struct CommandControlBlock, arcmsr_cdb);
1531         error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE1) ? true : false;
1532         /* check if command done with no error */
1533         arcmsr_drain_donequeue(acb, ccb, error);
1534         if (throttling == ARCMSR_HBC_ISR_THROTTLING_LEVEL) {
1535                 writel(ARCMSR_HBCMU_DRV2IOP_POSTQUEUE_THROTTLING, &phbcmu->inbound_doorbell);
1536                 break;
1537         }
1538         throttling++;
1539         }
1540 }
1541 /*
1542 **********************************************************************************
1543 ** Handle a message interrupt
1544 **
1545 ** The only message interrupt we expect is in response to a query for the current adapter config.  
1546 ** We want this in order to compare the drivemap so that we can detect newly-attached drives.
1547 **********************************************************************************
1548 */
1549 static void arcmsr_hba_message_isr(struct AdapterControlBlock *acb)
1550 {
1551         struct MessageUnit_A *reg  = acb->pmuA;
1552         /*clear interrupt and message state*/
1553         writel(ARCMSR_MU_OUTBOUND_MESSAGE0_INT, &reg->outbound_intstatus);
1554         schedule_work(&acb->arcmsr_do_message_isr_bh);
1555 }
1556 static void arcmsr_hbb_message_isr(struct AdapterControlBlock *acb)
1557 {
1558         struct MessageUnit_B *reg  = acb->pmuB;
1559 
1560         /*clear interrupt and message state*/
1561         writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN, reg->iop2drv_doorbell);
1562         schedule_work(&acb->arcmsr_do_message_isr_bh);
1563 }
1564 /*
1565 **********************************************************************************
1566 ** Handle a message interrupt
1567 **
1568 ** The only message interrupt we expect is in response to a query for the
1569 ** current adapter config.
1570 ** We want this in order to compare the drivemap so that we can detect newly-attached drives.
1571 **********************************************************************************
1572 */
1573 static void arcmsr_hbc_message_isr(struct AdapterControlBlock *acb)
1574 {
1575         struct MessageUnit_C *reg  = acb->pmuC;
1576         /*clear interrupt and message state*/
1577         writel(ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE_DOORBELL_CLEAR, &reg->outbound_doorbell_clear);
1578         schedule_work(&acb->arcmsr_do_message_isr_bh);
1579 }
1580 
1581 static int arcmsr_handle_hba_isr(struct AdapterControlBlock *acb)
1582 {
1583         uint32_t outbound_intstatus;
1584         struct MessageUnit_A __iomem *reg = acb->pmuA;
1585         outbound_intstatus = readl(&reg->outbound_intstatus) &
1586                 acb->outbound_int_enable;
1587         if (!(outbound_intstatus & ARCMSR_MU_OUTBOUND_HANDLE_INT))      {
1588                 return 1;
1589         }
1590         writel(outbound_intstatus, &reg->outbound_intstatus);
1591         if (outbound_intstatus & ARCMSR_MU_OUTBOUND_DOORBELL_INT)       {
1592                 arcmsr_hba_doorbell_isr(acb);
1593         }
1594         if (outbound_intstatus & ARCMSR_MU_OUTBOUND_POSTQUEUE_INT) {
1595                 arcmsr_hba_postqueue_isr(acb);
1596         }
1597         if(outbound_intstatus & ARCMSR_MU_OUTBOUND_MESSAGE0_INT)        {
1598                 /* messenger of "driver to iop commands" */
1599                 arcmsr_hba_message_isr(acb);
1600         }
1601         return 0;
1602 }
1603 
1604 static int arcmsr_handle_hbb_isr(struct AdapterControlBlock *acb)
1605 {
1606         uint32_t outbound_doorbell;
1607         struct MessageUnit_B *reg = acb->pmuB;
1608         outbound_doorbell = readl(reg->iop2drv_doorbell) &
1609                                 acb->outbound_int_enable;
1610         if (!outbound_doorbell)
1611                 return 1;
1612 
1613         writel(~outbound_doorbell, reg->iop2drv_doorbell);
1614         /*in case the last action of doorbell interrupt clearance is cached,
1615         this action can push HW to write down the clear bit*/
1616         readl(reg->iop2drv_doorbell);
1617         writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT, reg->drv2iop_doorbell);
1618         if (outbound_doorbell & ARCMSR_IOP2DRV_DATA_WRITE_OK) {
1619                 arcmsr_iop2drv_data_wrote_handle(acb);
1620         }
1621         if (outbound_doorbell & ARCMSR_IOP2DRV_DATA_READ_OK) {
1622                 arcmsr_iop2drv_data_read_handle(acb);
1623         }
1624         if (outbound_doorbell & ARCMSR_IOP2DRV_CDB_DONE) {
1625                 arcmsr_hbb_postqueue_isr(acb);
1626         }
1627         if(outbound_doorbell & ARCMSR_IOP2DRV_MESSAGE_CMD_DONE) {
1628                 /* messenger of "driver to iop commands" */
1629                 arcmsr_hbb_message_isr(acb);
1630         }
1631         return 0;
1632 }
1633 
1634 static int arcmsr_handle_hbc_isr(struct AdapterControlBlock *pACB)
1635 {
1636         uint32_t host_interrupt_status;
1637         struct MessageUnit_C *phbcmu = (struct MessageUnit_C *)pACB->pmuC;
1638         /*
1639         *********************************************
1640         **   check outbound intstatus
1641         *********************************************
1642         */
1643         host_interrupt_status = readl(&phbcmu->host_int_status);
1644         if (!host_interrupt_status) {
1645                 /*it must be share irq*/
1646                 return 1;
1647         }
1648         /* MU ioctl transfer doorbell interrupts*/
1649         if (host_interrupt_status & ARCMSR_HBCMU_OUTBOUND_DOORBELL_ISR) {
1650                 arcmsr_hbc_doorbell_isr(pACB);   /* messenger of "ioctl message read write" */
1651         }
1652         /* MU post queue interrupts*/
1653         if (host_interrupt_status & ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR) {
1654                 arcmsr_hbc_postqueue_isr(pACB);  /* messenger of "scsi commands" */
1655         }
1656         return 0;
1657 }
1658 static irqreturn_t arcmsr_interrupt(struct AdapterControlBlock *acb)
1659 {
1660         switch (acb->adapter_type) {
1661         case ACB_ADAPTER_TYPE_A: {
1662                 if (arcmsr_handle_hba_isr(acb)) {
1663                         return IRQ_NONE;
1664                 }
1665                 }
1666                 break;
1667 
1668         case ACB_ADAPTER_TYPE_B: {
1669                 if (arcmsr_handle_hbb_isr(acb)) {
1670                         return IRQ_NONE;
1671                 }
1672                 }
1673                 break;
1674          case ACB_ADAPTER_TYPE_C: {
1675                 if (arcmsr_handle_hbc_isr(acb)) {
1676                         return IRQ_NONE;
1677                 }
1678                 }
1679         }
1680         return IRQ_HANDLED;
1681 }
1682 
1683 static void arcmsr_iop_parking(struct AdapterControlBlock *acb)
1684 {
1685         if (acb) {
1686                 /* stop adapter background rebuild */
1687                 if (acb->acb_flags & ACB_F_MSG_START_BGRB) {
1688                         uint32_t intmask_org;
1689                         acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
1690                         intmask_org = arcmsr_disable_outbound_ints(acb);
1691                         arcmsr_stop_adapter_bgrb(acb);
1692                         arcmsr_flush_adapter_cache(acb);
1693                         arcmsr_enable_outbound_ints(acb, intmask_org);
1694                 }
1695         }
1696 }
1697 
1698 void arcmsr_post_ioctldata2iop(struct AdapterControlBlock *acb)
1699 {
1700         int32_t wqbuf_firstindex, wqbuf_lastindex;
1701         uint8_t *pQbuffer;
1702         struct QBUFFER __iomem *pwbuffer;
1703         uint8_t __iomem *iop_data;
1704         int32_t allxfer_len = 0;
1705         pwbuffer = arcmsr_get_iop_wqbuffer(acb);
1706         iop_data = (uint8_t __iomem *)pwbuffer->data;
1707         if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_READED) {
1708                 acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED);
1709                 wqbuf_firstindex = acb->wqbuf_firstindex;
1710                 wqbuf_lastindex = acb->wqbuf_lastindex;
1711                 while ((wqbuf_firstindex != wqbuf_lastindex) && (allxfer_len < 124)) {
1712                         pQbuffer = &acb->wqbuffer[wqbuf_firstindex];
1713                         memcpy(iop_data, pQbuffer, 1);
1714                         wqbuf_firstindex++;
1715                         wqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
1716                         iop_data++;
1717                         allxfer_len++;
1718                 }
1719                 acb->wqbuf_firstindex = wqbuf_firstindex;
1720                 pwbuffer->data_len = allxfer_len;
1721                 arcmsr_iop_message_wrote(acb);
1722         }
1723 }
1724 
1725 static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb,
1726                                         struct scsi_cmnd *cmd)
1727 {
1728         struct CMD_MESSAGE_FIELD *pcmdmessagefld;
1729         int retvalue = 0, transfer_len = 0;
1730         char *buffer;
1731         struct scatterlist *sg;
1732         uint32_t controlcode = (uint32_t ) cmd->cmnd[5] << 24 |
1733                                                 (uint32_t ) cmd->cmnd[6] << 16 |
1734                                                 (uint32_t ) cmd->cmnd[7] << 8  |
1735                                                 (uint32_t ) cmd->cmnd[8];
1736                                                 /* 4 bytes: Areca io control code */
1737         sg = scsi_sglist(cmd);
1738         buffer = kmap_atomic(sg_page(sg)) + sg->offset;
1739         if (scsi_sg_count(cmd) > 1) {
1740                 retvalue = ARCMSR_MESSAGE_FAIL;
1741                 goto message_out;
1742         }
1743         transfer_len += sg->length;
1744 
1745         if (transfer_len > sizeof(struct CMD_MESSAGE_FIELD)) {
1746                 retvalue = ARCMSR_MESSAGE_FAIL;
1747                 goto message_out;
1748         }
1749         pcmdmessagefld = (struct CMD_MESSAGE_FIELD *) buffer;
1750         switch(controlcode) {
1751 
1752         case ARCMSR_MESSAGE_READ_RQBUFFER: {
1753                 unsigned char *ver_addr;
1754                 uint8_t *pQbuffer, *ptmpQbuffer;
1755                 int32_t allxfer_len = 0;
1756 
1757                 ver_addr = kmalloc(1032, GFP_ATOMIC);
1758                 if (!ver_addr) {
1759                         retvalue = ARCMSR_MESSAGE_FAIL;
1760                         goto message_out;
1761                 }
1762                                 
1763                 ptmpQbuffer = ver_addr;
1764                 while ((acb->rqbuf_firstindex != acb->rqbuf_lastindex)
1765                         && (allxfer_len < 1031)) {
1766                         pQbuffer = &acb->rqbuffer[acb->rqbuf_firstindex];
1767                         memcpy(ptmpQbuffer, pQbuffer, 1);
1768                         acb->rqbuf_firstindex++;
1769                         acb->rqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
1770                         ptmpQbuffer++;
1771                         allxfer_len++;
1772                 }
1773                 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
1774 
1775                         struct QBUFFER __iomem *prbuffer;
1776                         uint8_t __iomem *iop_data;
1777                         int32_t iop_len;
1778 
1779                         acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
1780                         prbuffer = arcmsr_get_iop_rqbuffer(acb);
1781                         iop_data = prbuffer->data;
1782                         iop_len = readl(&prbuffer->data_len);
1783                         while (iop_len > 0) {
1784                                 acb->rqbuffer[acb->rqbuf_lastindex] = readb(iop_data);
1785                                 acb->rqbuf_lastindex++;
1786                                 acb->rqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
1787                                 iop_data++;
1788                                 iop_len--;
1789                         }
1790                         arcmsr_iop_message_read(acb);
1791                 }
1792                 memcpy(pcmdmessagefld->messagedatabuffer, ver_addr, allxfer_len);
1793                 pcmdmessagefld->cmdmessage.Length = allxfer_len;
1794                 if(acb->fw_flag == FW_DEADLOCK) {
1795                         pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1796                 }else{
1797                         pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK;
1798                 }
1799                 kfree(ver_addr);
1800                 }
1801                 break;
1802 
1803         case ARCMSR_MESSAGE_WRITE_WQBUFFER: {
1804                 unsigned char *ver_addr;
1805                 int32_t my_empty_len, user_len, wqbuf_firstindex, wqbuf_lastindex;
1806                 uint8_t *pQbuffer, *ptmpuserbuffer;
1807 
1808                 ver_addr = kmalloc(1032, GFP_ATOMIC);
1809                 if (!ver_addr) {
1810                         retvalue = ARCMSR_MESSAGE_FAIL;
1811                         goto message_out;
1812                 }
1813                 if(acb->fw_flag == FW_DEADLOCK) {
1814                         pcmdmessagefld->cmdmessage.ReturnCode = 
1815                         ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1816                 }else{
1817                         pcmdmessagefld->cmdmessage.ReturnCode = 
1818                         ARCMSR_MESSAGE_RETURNCODE_OK;
1819                 }
1820                 ptmpuserbuffer = ver_addr;
1821                 user_len = pcmdmessagefld->cmdmessage.Length;
1822                 memcpy(ptmpuserbuffer, pcmdmessagefld->messagedatabuffer, user_len);
1823                 wqbuf_lastindex = acb->wqbuf_lastindex;
1824                 wqbuf_firstindex = acb->wqbuf_firstindex;
1825                 if (wqbuf_lastindex != wqbuf_firstindex) {
1826                         struct SENSE_DATA *sensebuffer =
1827                                 (struct SENSE_DATA *)cmd->sense_buffer;
1828                         arcmsr_post_ioctldata2iop(acb);
1829                         /* has error report sensedata */
1830                         sensebuffer->ErrorCode = 0x70;
1831                         sensebuffer->SenseKey = ILLEGAL_REQUEST;
1832                         sensebuffer->AdditionalSenseLength = 0x0A;
1833                         sensebuffer->AdditionalSenseCode = 0x20;
1834                         sensebuffer->Valid = 1;
1835                         retvalue = ARCMSR_MESSAGE_FAIL;
1836                 } else {
1837                         my_empty_len = (wqbuf_firstindex-wqbuf_lastindex - 1)
1838                                 &(ARCMSR_MAX_QBUFFER - 1);
1839                         if (my_empty_len >= user_len) {
1840                                 while (user_len > 0) {
1841                                         pQbuffer =
1842                                         &acb->wqbuffer[acb->wqbuf_lastindex];
1843                                         memcpy(pQbuffer, ptmpuserbuffer, 1);
1844                                         acb->wqbuf_lastindex++;
1845                                         acb->wqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
1846                                         ptmpuserbuffer++;
1847                                         user_len--;
1848                                 }
1849                                 if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_CLEARED) {
1850                                         acb->acb_flags &=
1851                                                 ~ACB_F_MESSAGE_WQBUFFER_CLEARED;
1852                                         arcmsr_post_ioctldata2iop(acb);
1853                                 }
1854                         } else {
1855                                 /* has error report sensedata */
1856                                 struct SENSE_DATA *sensebuffer =
1857                                         (struct SENSE_DATA *)cmd->sense_buffer;
1858                                 sensebuffer->ErrorCode = 0x70;
1859                                 sensebuffer->SenseKey = ILLEGAL_REQUEST;
1860                                 sensebuffer->AdditionalSenseLength = 0x0A;
1861                                 sensebuffer->AdditionalSenseCode = 0x20;
1862                                 sensebuffer->Valid = 1;
1863                                 retvalue = ARCMSR_MESSAGE_FAIL;
1864                         }
1865                         }
1866                         kfree(ver_addr);
1867                 }
1868                 break;
1869 
1870         case ARCMSR_MESSAGE_CLEAR_RQBUFFER: {
1871                 uint8_t *pQbuffer = acb->rqbuffer;
1872                 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
1873                         acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
1874                         arcmsr_iop_message_read(acb);
1875                 }
1876                 acb->acb_flags |= ACB_F_MESSAGE_RQBUFFER_CLEARED;
1877                 acb->rqbuf_firstindex = 0;
1878                 acb->rqbuf_lastindex = 0;
1879                 memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER);
1880                 if(acb->fw_flag == FW_DEADLOCK) {
1881                         pcmdmessagefld->cmdmessage.ReturnCode =
1882                         ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1883                 }else{
1884                         pcmdmessagefld->cmdmessage.ReturnCode =
1885                         ARCMSR_MESSAGE_RETURNCODE_OK;
1886                 }
1887                 }
1888                 break;
1889 
1890         case ARCMSR_MESSAGE_CLEAR_WQBUFFER: {
1891                 uint8_t *pQbuffer = acb->wqbuffer;
1892                 if(acb->fw_flag == FW_DEADLOCK) {
1893                         pcmdmessagefld->cmdmessage.ReturnCode =
1894                         ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1895                 }else{
1896                         pcmdmessagefld->cmdmessage.ReturnCode =
1897                         ARCMSR_MESSAGE_RETURNCODE_OK;
1898                 }
1899 
1900                 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
1901                         acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
1902                         arcmsr_iop_message_read(acb);
1903                 }
1904                 acb->acb_flags |=
1905                         (ACB_F_MESSAGE_WQBUFFER_CLEARED |
1906                                 ACB_F_MESSAGE_WQBUFFER_READED);
1907                 acb->wqbuf_firstindex = 0;
1908                 acb->wqbuf_lastindex = 0;
1909                 memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER);
1910                 }
1911                 break;
1912 
1913         case ARCMSR_MESSAGE_CLEAR_ALLQBUFFER: {
1914                 uint8_t *pQbuffer;
1915 
1916                 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
1917                         acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
1918                         arcmsr_iop_message_read(acb);
1919                 }
1920                 acb->acb_flags |=
1921                         (ACB_F_MESSAGE_WQBUFFER_CLEARED
1922                         | ACB_F_MESSAGE_RQBUFFER_CLEARED
1923                         | ACB_F_MESSAGE_WQBUFFER_READED);
1924                 acb->rqbuf_firstindex = 0;
1925                 acb->rqbuf_lastindex = 0;
1926                 acb->wqbuf_firstindex = 0;
1927                 acb->wqbuf_lastindex = 0;
1928                 pQbuffer = acb->rqbuffer;
1929                 memset(pQbuffer, 0, sizeof(struct QBUFFER));
1930                 pQbuffer = acb->wqbuffer;
1931                 memset(pQbuffer, 0, sizeof(struct QBUFFER));
1932                 if(acb->fw_flag == FW_DEADLOCK) {
1933                         pcmdmessagefld->cmdmessage.ReturnCode =
1934                         ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1935                 }else{
1936                         pcmdmessagefld->cmdmessage.ReturnCode =
1937                         ARCMSR_MESSAGE_RETURNCODE_OK;
1938                 }
1939                 }
1940                 break;
1941 
1942         case ARCMSR_MESSAGE_RETURN_CODE_3F: {
1943                 if(acb->fw_flag == FW_DEADLOCK) {
1944                         pcmdmessagefld->cmdmessage.ReturnCode =
1945                         ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1946                 }else{
1947                         pcmdmessagefld->cmdmessage.ReturnCode =
1948                         ARCMSR_MESSAGE_RETURNCODE_3F;
1949                 }
1950                 break;
1951                 }
1952         case ARCMSR_MESSAGE_SAY_HELLO: {
1953                 int8_t *hello_string = "Hello! I am ARCMSR";
1954                 if(acb->fw_flag == FW_DEADLOCK) {
1955                         pcmdmessagefld->cmdmessage.ReturnCode =
1956                         ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1957                 }else{
1958                         pcmdmessagefld->cmdmessage.ReturnCode =
1959                         ARCMSR_MESSAGE_RETURNCODE_OK;
1960                 }
1961                 memcpy(pcmdmessagefld->messagedatabuffer, hello_string
1962                         , (int16_t)strlen(hello_string));
1963                 }
1964                 break;
1965 
1966         case ARCMSR_MESSAGE_SAY_GOODBYE:
1967                 if(acb->fw_flag == FW_DEADLOCK) {
1968                         pcmdmessagefld->cmdmessage.ReturnCode =
1969                         ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1970                 }
1971                 arcmsr_iop_parking(acb);
1972                 break;
1973 
1974         case ARCMSR_MESSAGE_FLUSH_ADAPTER_CACHE:
1975                 if(acb->fw_flag == FW_DEADLOCK) {
1976                         pcmdmessagefld->cmdmessage.ReturnCode =
1977                         ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
1978                 }
1979                 arcmsr_flush_adapter_cache(acb);
1980                 break;
1981 
1982         default:
1983                 retvalue = ARCMSR_MESSAGE_FAIL;
1984         }
1985         message_out:
1986         sg = scsi_sglist(cmd);
1987         kunmap_atomic(buffer - sg->offset);
1988         return retvalue;
1989 }
1990 
1991 static struct CommandControlBlock *arcmsr_get_freeccb(struct AdapterControlBlock *acb)
1992 {
1993         struct list_head *head = &acb->ccb_free_list;
1994         struct CommandControlBlock *ccb = NULL;
1995         unsigned long flags;
1996         spin_lock_irqsave(&acb->ccblist_lock, flags);
1997         if (!list_empty(head)) {
1998                 ccb = list_entry(head->next, struct CommandControlBlock, list);
1999                 list_del_init(&ccb->list);
2000         }else{
2001                 spin_unlock_irqrestore(&acb->ccblist_lock, flags);
2002                 return 0;
2003         }
2004         spin_unlock_irqrestore(&acb->ccblist_lock, flags);
2005         return ccb;
2006 }
2007 
2008 static void arcmsr_handle_virtual_command(struct AdapterControlBlock *acb,
2009                 struct scsi_cmnd *cmd)
2010 {
2011         switch (cmd->cmnd[0]) {
2012         case INQUIRY: {
2013                 unsigned char inqdata[36];
2014                 char *buffer;
2015                 struct scatterlist *sg;
2016 
2017                 if (cmd->device->lun) {
2018                         cmd->result = (DID_TIME_OUT << 16);
2019                         cmd->scsi_done(cmd);
2020                         return;
2021                 }
2022                 inqdata[0] = TYPE_PROCESSOR;
2023                 /* Periph Qualifier & Periph Dev Type */
2024                 inqdata[1] = 0;
2025                 /* rem media bit & Dev Type Modifier */
2026                 inqdata[2] = 0;
2027                 /* ISO, ECMA, & ANSI versions */
2028                 inqdata[4] = 31;
2029                 /* length of additional data */
2030                 strncpy(&inqdata[8], "Areca   ", 8);
2031                 /* Vendor Identification */
2032                 strncpy(&inqdata[16], "RAID controller ", 16);
2033                 /* Product Identification */
2034                 strncpy(&inqdata[32], "R001", 4); /* Product Revision */
2035 
2036                 sg = scsi_sglist(cmd);
2037                 buffer = kmap_atomic(sg_page(sg)) + sg->offset;
2038 
2039                 memcpy(buffer, inqdata, sizeof(inqdata));
2040                 sg = scsi_sglist(cmd);
2041                 kunmap_atomic(buffer - sg->offset);
2042 
2043                 cmd->scsi_done(cmd);
2044         }
2045         break;
2046         case WRITE_BUFFER:
2047         case READ_BUFFER: {
2048                 if (arcmsr_iop_message_xfer(acb, cmd))
2049                         cmd->result = (DID_ERROR << 16);
2050                 cmd->scsi_done(cmd);
2051         }
2052         break;
2053         default:
2054                 cmd->scsi_done(cmd);
2055         }
2056 }
2057 
2058 static int arcmsr_queue_command_lck(struct scsi_cmnd *cmd,
2059         void (* done)(struct scsi_cmnd *))
2060 {
2061         struct Scsi_Host *host = cmd->device->host;
2062         struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
2063         struct CommandControlBlock *ccb;
2064         int target = cmd->device->id;
2065         int lun = cmd->device->lun;
2066         uint8_t scsicmd = cmd->cmnd[0];
2067         cmd->scsi_done = done;
2068         cmd->host_scribble = NULL;
2069         cmd->result = 0;
2070         if ((scsicmd == SYNCHRONIZE_CACHE) ||(scsicmd == SEND_DIAGNOSTIC)){
2071                 if(acb->devstate[target][lun] == ARECA_RAID_GONE) {
2072                         cmd->result = (DID_NO_CONNECT << 16);
2073                 }
2074                 cmd->scsi_done(cmd);
2075                 return 0;
2076         }
2077         if (target == 16) {
2078                 /* virtual device for iop message transfer */
2079                 arcmsr_handle_virtual_command(acb, cmd);
2080                 return 0;
2081         }
2082         if (atomic_read(&acb->ccboutstandingcount) >=
2083                         ARCMSR_MAX_OUTSTANDING_CMD)
2084                 return SCSI_MLQUEUE_HOST_BUSY;
2085         ccb = arcmsr_get_freeccb(acb);
2086         if (!ccb)
2087                 return SCSI_MLQUEUE_HOST_BUSY;
2088         if (arcmsr_build_ccb( acb, ccb, cmd ) == FAILED) {
2089                 cmd->result = (DID_ERROR << 16) | (RESERVATION_CONFLICT << 1);
2090                 cmd->scsi_done(cmd);
2091                 return 0;
2092         }
2093         arcmsr_post_ccb(acb, ccb);
2094         return 0;
2095 }
2096 
2097 static DEF_SCSI_QCMD(arcmsr_queue_command)
2098 
2099 static bool arcmsr_get_hba_config(struct AdapterControlBlock *acb)
2100 {
2101         struct MessageUnit_A __iomem *reg = acb->pmuA;
2102         char *acb_firm_model = acb->firm_model;
2103         char *acb_firm_version = acb->firm_version;
2104         char *acb_device_map = acb->device_map;
2105         char __iomem *iop_firm_model = (char __iomem *)(&reg->message_rwbuffer[15]);
2106         char __iomem *iop_firm_version = (char __iomem *)(&reg->message_rwbuffer[17]);
2107         char __iomem *iop_device_map = (char __iomem *)(&reg->message_rwbuffer[21]);
2108         int count;
2109         writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
2110         if (!arcmsr_hba_wait_msgint_ready(acb)) {
2111                 printk(KERN_NOTICE "arcmsr%d: wait 'get adapter firmware \
2112                         miscellaneous data' timeout \n", acb->host->host_no);
2113                 return false;
2114         }
2115         count = 8;
2116         while (count){
2117                 *acb_firm_model = readb(iop_firm_model);
2118                 acb_firm_model++;
2119                 iop_firm_model++;
2120                 count--;
2121         }
2122 
2123         count = 16;
2124         while (count){
2125                 *acb_firm_version = readb(iop_firm_version);
2126                 acb_firm_version++;
2127                 iop_firm_version++;
2128                 count--;
2129         }
2130 
2131         count=16;
2132         while(count){
2133                 *acb_device_map = readb(iop_device_map);
2134                 acb_device_map++;
2135                 iop_device_map++;
2136                 count--;
2137         }
2138         printk(KERN_NOTICE "Areca RAID Controller%d: F/W %s & Model %s\n", 
2139                 acb->host->host_no,
2140                 acb->firm_version,
2141                 acb->firm_model);
2142         acb->signature = readl(&reg->message_rwbuffer[0]);
2143         acb->firm_request_len = readl(&reg->message_rwbuffer[1]);
2144         acb->firm_numbers_queue = readl(&reg->message_rwbuffer[2]);
2145         acb->firm_sdram_size = readl(&reg->message_rwbuffer[3]);
2146         acb->firm_hd_channels = readl(&reg->message_rwbuffer[4]);
2147         acb->firm_cfg_version = readl(&reg->message_rwbuffer[25]);  /*firm_cfg_version,25,100-103*/
2148         return true;
2149 }
2150 static bool arcmsr_get_hbb_config(struct AdapterControlBlock *acb)
2151 {
2152         struct MessageUnit_B *reg = acb->pmuB;
2153         struct pci_dev *pdev = acb->pdev;
2154         void *dma_coherent;
2155         dma_addr_t dma_coherent_handle;
2156         char *acb_firm_model = acb->firm_model;
2157         char *acb_firm_version = acb->firm_version;
2158         char *acb_device_map = acb->device_map;
2159         char __iomem *iop_firm_model;
2160         /*firm_model,15,60-67*/
2161         char __iomem *iop_firm_version;
2162         /*firm_version,17,68-83*/
2163         char __iomem *iop_device_map;
2164         /*firm_version,21,84-99*/
2165         int count;
2166         dma_coherent = dma_alloc_coherent(&pdev->dev, sizeof(struct MessageUnit_B), &dma_coherent_handle, GFP_KERNEL);
2167         if (!dma_coherent){
2168                 printk(KERN_NOTICE "arcmsr%d: dma_alloc_coherent got error for hbb mu\n", acb->host->host_no);
2169                 return false;
2170         }
2171         acb->dma_coherent_handle_hbb_mu = dma_coherent_handle;
2172         reg = (struct MessageUnit_B *)dma_coherent;
2173         acb->pmuB = reg;
2174         reg->drv2iop_doorbell= (uint32_t __iomem *)((unsigned long)acb->mem_base0 + ARCMSR_DRV2IOP_DOORBELL);
2175         reg->drv2iop_doorbell_mask = (uint32_t __iomem *)((unsigned long)acb->mem_base0 + ARCMSR_DRV2IOP_DOORBELL_MASK);
2176         reg->iop2drv_doorbell = (uint32_t __iomem *)((unsigned long)acb->mem_base0 + ARCMSR_IOP2DRV_DOORBELL);
2177         reg->iop2drv_doorbell_mask = (uint32_t __iomem *)((unsigned long)acb->mem_base0 + ARCMSR_IOP2DRV_DOORBELL_MASK);
2178         reg->message_wbuffer = (uint32_t __iomem *)((unsigned long)acb->mem_base1 + ARCMSR_MESSAGE_WBUFFER);
2179         reg->message_rbuffer =  (uint32_t __iomem *)((unsigned long)acb->mem_base1 + ARCMSR_MESSAGE_RBUFFER);
2180         reg->message_rwbuffer = (uint32_t __iomem *)((unsigned long)acb->mem_base1 + ARCMSR_MESSAGE_RWBUFFER);
2181         iop_firm_model = (char __iomem *)(&reg->message_rwbuffer[15]);  /*firm_model,15,60-67*/
2182         iop_firm_version = (char __iomem *)(&reg->message_rwbuffer[17]);        /*firm_version,17,68-83*/
2183         iop_device_map = (char __iomem *)(&reg->message_rwbuffer[21]);  /*firm_version,21,84-99*/
2184 
2185         writel(ARCMSR_MESSAGE_GET_CONFIG, reg->drv2iop_doorbell);
2186         if (!arcmsr_hbb_wait_msgint_ready(acb)) {
2187                 printk(KERN_NOTICE "arcmsr%d: wait 'get adapter firmware \
2188                         miscellaneous data' timeout \n", acb->host->host_no);
2189                 return false;
2190         }
2191         count = 8;
2192         while (count){
2193                 *acb_firm_model = readb(iop_firm_model);
2194                 acb_firm_model++;
2195                 iop_firm_model++;
2196                 count--;
2197         }
2198         count = 16;
2199         while (count){
2200                 *acb_firm_version = readb(iop_firm_version);
2201                 acb_firm_version++;
2202                 iop_firm_version++;
2203                 count--;
2204         }
2205 
2206         count = 16;
2207         while(count){
2208                 *acb_device_map = readb(iop_device_map);
2209                 acb_device_map++;
2210                 iop_device_map++;
2211                 count--;
2212         }
2213         
2214         printk(KERN_NOTICE "Areca RAID Controller%d: F/W %s & Model %s\n",
2215                 acb->host->host_no,
2216                 acb->firm_version,
2217                 acb->firm_model);
2218 
2219         acb->signature = readl(&reg->message_rwbuffer[1]);
2220         /*firm_signature,1,00-03*/
2221         acb->firm_request_len = readl(&reg->message_rwbuffer[2]);
2222         /*firm_request_len,1,04-07*/
2223         acb->firm_numbers_queue = readl(&reg->message_rwbuffer[3]);
2224         /*firm_numbers_queue,2,08-11*/
2225         acb->firm_sdram_size = readl(&reg->message_rwbuffer[4]);
2226         /*firm_sdram_size,3,12-15*/
2227         acb->firm_hd_channels = readl(&reg->message_rwbuffer[5]);
2228         /*firm_ide_channels,4,16-19*/
2229         acb->firm_cfg_version = readl(&reg->message_rwbuffer[25]);  /*firm_cfg_version,25,100-103*/
2230         /*firm_ide_channels,4,16-19*/
2231         return true;
2232 }
2233 
2234 static bool arcmsr_get_hbc_config(struct AdapterControlBlock *pACB)
2235 {
2236         uint32_t intmask_org, Index, firmware_state = 0;
2237         struct MessageUnit_C *reg = pACB->pmuC;
2238         char *acb_firm_model = pACB->firm_model;
2239         char *acb_firm_version = pACB->firm_version;
2240         char *iop_firm_model = (char *)(&reg->msgcode_rwbuffer[15]);    /*firm_model,15,60-67*/
2241         char *iop_firm_version = (char *)(&reg->msgcode_rwbuffer[17]);  /*firm_version,17,68-83*/
2242         int count;
2243         /* disable all outbound interrupt */
2244         intmask_org = readl(&reg->host_int_mask); /* disable outbound message0 int */
2245         writel(intmask_org|ARCMSR_HBCMU_ALL_INTMASKENABLE, &reg->host_int_mask);
2246         /* wait firmware ready */
2247         do {
2248                 firmware_state = readl(&reg->outbound_msgaddr1);
2249         } while ((firmware_state & ARCMSR_HBCMU_MESSAGE_FIRMWARE_OK) == 0);
2250         /* post "get config" instruction */
2251         writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
2252         writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
2253         /* wait message ready */
2254         for (Index = 0; Index < 2000; Index++) {
2255                 if (readl(&reg->outbound_doorbell) & ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE) {
2256                         writel(ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE_DOORBELL_CLEAR, &reg->outbound_doorbell_clear);/*clear interrupt*/
2257                         break;
2258                 }
2259                 udelay(10);
2260         } /*max 1 seconds*/
2261         if (Index >= 2000) {
2262                 printk(KERN_NOTICE "arcmsr%d: wait 'get adapter firmware \
2263                         miscellaneous data' timeout \n", pACB->host->host_no);
2264                 return false;
2265         }
2266         count = 8;
2267         while (count) {
2268                 *acb_firm_model = readb(iop_firm_model);
2269                 acb_firm_model++;
2270                 iop_firm_model++;
2271                 count--;
2272         }
2273         count = 16;
2274         while (count) {
2275                 *acb_firm_version = readb(iop_firm_version);
2276                 acb_firm_version++;
2277                 iop_firm_version++;
2278                 count--;
2279         }
2280         printk(KERN_NOTICE "Areca RAID Controller%d: F/W %s & Model %s\n",
2281                 pACB->host->host_no,
2282                 pACB->firm_version,
2283                 pACB->firm_model);
2284         pACB->firm_request_len = readl(&reg->msgcode_rwbuffer[1]);   /*firm_request_len,1,04-07*/
2285         pACB->firm_numbers_queue = readl(&reg->msgcode_rwbuffer[2]); /*firm_numbers_queue,2,08-11*/
2286         pACB->firm_sdram_size = readl(&reg->msgcode_rwbuffer[3]);    /*firm_sdram_size,3,12-15*/
2287         pACB->firm_hd_channels = readl(&reg->msgcode_rwbuffer[4]);  /*firm_ide_channels,4,16-19*/
2288         pACB->firm_cfg_version = readl(&reg->msgcode_rwbuffer[25]);  /*firm_cfg_version,25,100-103*/
2289         /*all interrupt service will be enable at arcmsr_iop_init*/
2290         return true;
2291 }
2292 static bool arcmsr_get_firmware_spec(struct AdapterControlBlock *acb)
2293 {
2294         if (acb->adapter_type == ACB_ADAPTER_TYPE_A)
2295                 return arcmsr_get_hba_config(acb);
2296         else if (acb->adapter_type == ACB_ADAPTER_TYPE_B)
2297                 return arcmsr_get_hbb_config(acb);
2298         else
2299                 return arcmsr_get_hbc_config(acb);
2300 }
2301 
2302 static int arcmsr_polling_hba_ccbdone(struct AdapterControlBlock *acb,
2303         struct CommandControlBlock *poll_ccb)
2304 {
2305         struct MessageUnit_A __iomem *reg = acb->pmuA;
2306         struct CommandControlBlock *ccb;
2307         struct ARCMSR_CDB *arcmsr_cdb;
2308         uint32_t flag_ccb, outbound_intstatus, poll_ccb_done = 0, poll_count = 0;
2309         int rtn;
2310         bool error;
2311         polling_hba_ccb_retry:
2312         poll_count++;
2313         outbound_intstatus = readl(&reg->outbound_intstatus) & acb->outbound_int_enable;
2314         writel(outbound_intstatus, &reg->outbound_intstatus);/*clear interrupt*/
2315         while (1) {
2316                 if ((flag_ccb = readl(&reg->outbound_queueport)) == 0xFFFFFFFF) {
2317                         if (poll_ccb_done){
2318                                 rtn = SUCCESS;
2319                                 break;
2320                         }else {
2321                                 msleep(25);
2322                                 if (poll_count > 100){
2323                                         rtn = FAILED;
2324                                         break;
2325                                 }
2326                                 goto polling_hba_ccb_retry;
2327                         }
2328                 }
2329                 arcmsr_cdb = (struct ARCMSR_CDB *)(acb->vir2phy_offset + (flag_ccb << 5));
2330                 ccb = container_of(arcmsr_cdb, struct CommandControlBlock, arcmsr_cdb);
2331                 poll_ccb_done = (ccb == poll_ccb) ? 1:0;
2332                 if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) {
2333                         if ((ccb->startdone == ARCMSR_CCB_ABORTED) || (ccb == poll_ccb)) {
2334                                 printk(KERN_NOTICE "arcmsr%d: scsi id = %d lun = %d ccb = '0x%p'"
2335                                         " poll command abort successfully \n"
2336                                         , acb->host->host_no
2337                                         , ccb->pcmd->device->id
2338                                         , ccb->pcmd->device->lun
2339                                         , ccb);
2340                                 ccb->pcmd->result = DID_ABORT << 16;
2341                                 arcmsr_ccb_complete(ccb);
2342                                 continue;
2343                         }
2344                         printk(KERN_NOTICE "arcmsr%d: polling get an illegal ccb"
2345                                 " command done ccb = '0x%p'"
2346                                 "ccboutstandingcount = %d \n"
2347                                 , acb->host->host_no
2348                                 , ccb
2349                                 , atomic_read(&acb->ccboutstandingcount));
2350                         continue;
2351                 }
2352                 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
2353                 arcmsr_report_ccb_state(acb, ccb, error);
2354         }
2355         return rtn;
2356 }
2357 
2358 static int arcmsr_polling_hbb_ccbdone(struct AdapterControlBlock *acb,
2359                                         struct CommandControlBlock *poll_ccb)
2360 {
2361         struct MessageUnit_B *reg = acb->pmuB;
2362         struct ARCMSR_CDB *arcmsr_cdb;
2363         struct CommandControlBlock *ccb;
2364         uint32_t flag_ccb, poll_ccb_done = 0, poll_count = 0;
2365         int index, rtn;
2366         bool error;
2367         polling_hbb_ccb_retry:
2368 
2369         poll_count++;
2370         /* clear doorbell interrupt */
2371         writel(ARCMSR_DOORBELL_INT_CLEAR_PATTERN, reg->iop2drv_doorbell);
2372         while(1){
2373                 index = reg->doneq_index;
2374                 if ((flag_ccb = readl(&reg->done_qbuffer[index])) == 0) {
2375                         if (poll_ccb_done){
2376                                 rtn = SUCCESS;
2377                                 break;
2378                         }else {
2379                                 msleep(25);
2380                                 if (poll_count > 100){
2381                                         rtn = FAILED;
2382                                         break;
2383                                 }
2384                                 goto polling_hbb_ccb_retry;
2385                         }
2386                 }
2387                 writel(0, &reg->done_qbuffer[index]);
2388                 index++;
2389                 /*if last index number set it to 0 */
2390                 index %= ARCMSR_MAX_HBB_POSTQUEUE;
2391                 reg->doneq_index = index;
2392                 /* check if command done with no error*/
2393                 arcmsr_cdb = (struct ARCMSR_CDB *)(acb->vir2phy_offset + (flag_ccb << 5));
2394                 ccb = container_of(arcmsr_cdb, struct CommandControlBlock, arcmsr_cdb);
2395                 poll_ccb_done = (ccb == poll_ccb) ? 1:0;
2396                 if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) {
2397                         if ((ccb->startdone == ARCMSR_CCB_ABORTED) || (ccb == poll_ccb)) {
2398                                 printk(KERN_NOTICE "arcmsr%d: scsi id = %d lun = %d ccb = '0x%p'"
2399                                         " poll command abort successfully \n"
2400                                         ,acb->host->host_no
2401                                         ,ccb->pcmd->device->id
2402                                         ,ccb->pcmd->device->lun
2403                                         ,ccb);
2404                                 ccb->pcmd->result = DID_ABORT << 16;
2405                                 arcmsr_ccb_complete(ccb);
2406                                 continue;
2407                         }
2408                         printk(KERN_NOTICE "arcmsr%d: polling get an illegal ccb"
2409                                 " command done ccb = '0x%p'"
2410                                 "ccboutstandingcount = %d \n"
2411                                 , acb->host->host_no
2412                                 , ccb
2413                                 , atomic_read(&acb->ccboutstandingcount));
2414                         continue;
2415                 } 
2416                 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
2417                 arcmsr_report_ccb_state(acb, ccb, error);
2418         }
2419         return rtn;
2420 }
2421 
2422 static int arcmsr_polling_hbc_ccbdone(struct AdapterControlBlock *acb, struct CommandControlBlock *poll_ccb)
2423 {
2424         struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
2425         uint32_t flag_ccb, ccb_cdb_phy;
2426         struct ARCMSR_CDB *arcmsr_cdb;
2427         bool error;
2428         struct CommandControlBlock *pCCB;
2429         uint32_t poll_ccb_done = 0, poll_count = 0;
2430         int rtn;
2431 polling_hbc_ccb_retry:
2432         poll_count++;
2433         while (1) {
2434                 if ((readl(&reg->host_int_status) & ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR) == 0) {
2435                         if (poll_ccb_done) {
2436                                 rtn = SUCCESS;
2437                                 break;
2438                         } else {
2439                                 msleep(25);
2440                                 if (poll_count > 100) {
2441                                         rtn = FAILED;
2442                                         break;
2443                                 }
2444                                 goto polling_hbc_ccb_retry;
2445                         }
2446                 }
2447                 flag_ccb = readl(&reg->outbound_queueport_low);
2448                 ccb_cdb_phy = (flag_ccb & 0xFFFFFFF0);
2449                 arcmsr_cdb = (struct ARCMSR_CDB *)(acb->vir2phy_offset + ccb_cdb_phy);/*frame must be 32 bytes aligned*/
2450                 pCCB = container_of(arcmsr_cdb, struct CommandControlBlock, arcmsr_cdb);
2451                 poll_ccb_done = (pCCB == poll_ccb) ? 1 : 0;
2452                 /* check ifcommand done with no error*/
2453                 if ((pCCB->acb != acb) || (pCCB->startdone != ARCMSR_CCB_START)) {
2454                         if (pCCB->startdone == ARCMSR_CCB_ABORTED) {
2455                                 printk(KERN_NOTICE "arcmsr%d: scsi id = %d lun = %d ccb = '0x%p'"
2456                                         " poll command abort successfully \n"
2457                                         , acb->host->host_no
2458                                         , pCCB->pcmd->device->id
2459                                         , pCCB->pcmd->device->lun
2460                                         , pCCB);
2461                                         pCCB->pcmd->result = DID_ABORT << 16;
2462                                         arcmsr_ccb_complete(pCCB);
2463                                 continue;
2464                         }
2465                         printk(KERN_NOTICE "arcmsr%d: polling get an illegal ccb"
2466                                 " command done ccb = '0x%p'"
2467                                 "ccboutstandingcount = %d \n"
2468                                 , acb->host->host_no
2469                                 , pCCB
2470                                 , atomic_read(&acb->ccboutstandingcount));
2471                         continue;
2472                 }
2473                 error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE1) ? true : false;
2474                 arcmsr_report_ccb_state(acb, pCCB, error);
2475         }
2476         return rtn;
2477 }
2478 static int arcmsr_polling_ccbdone(struct AdapterControlBlock *acb,
2479                                         struct CommandControlBlock *poll_ccb)
2480 {
2481         int rtn = 0;
2482         switch (acb->adapter_type) {
2483 
2484         case ACB_ADAPTER_TYPE_A: {
2485                 rtn = arcmsr_polling_hba_ccbdone(acb, poll_ccb);
2486                 }
2487                 break;
2488 
2489         case ACB_ADAPTER_TYPE_B: {
2490                 rtn = arcmsr_polling_hbb_ccbdone(acb, poll_ccb);
2491                 }
2492                 break;
2493         case ACB_ADAPTER_TYPE_C: {
2494                 rtn = arcmsr_polling_hbc_ccbdone(acb, poll_ccb);
2495                 }
2496         }
2497         return rtn;
2498 }
2499 
2500 static int arcmsr_iop_confirm(struct AdapterControlBlock *acb)
2501 {
2502         uint32_t cdb_phyaddr, cdb_phyaddr_hi32;
2503 
2504         /*
2505         ********************************************************************
2506         ** here we need to tell iop 331 our freeccb.HighPart
2507         ** if freeccb.HighPart is not zero
2508         ********************************************************************
2509         */
2510         cdb_phyaddr = lower_32_bits(acb->dma_coherent_handle);
2511         cdb_phyaddr_hi32 = upper_32_bits(acb->dma_coherent_handle);
2512         acb->cdb_phyaddr_hi32 = cdb_phyaddr_hi32;
2513         /*
2514         ***********************************************************************
2515         **    if adapter type B, set window of "post command Q"
2516         ***********************************************************************
2517         */
2518         switch (acb->adapter_type) {
2519 
2520         case ACB_ADAPTER_TYPE_A: {
2521                 if (cdb_phyaddr_hi32 != 0) {
2522                         struct MessageUnit_A __iomem *reg = acb->pmuA;
2523                         uint32_t intmask_org;
2524                         intmask_org = arcmsr_disable_outbound_ints(acb);
2525                         writel(ARCMSR_SIGNATURE_SET_CONFIG, \
2526                                                 &reg->message_rwbuffer[0]);
2527                         writel(cdb_phyaddr_hi32, &reg->message_rwbuffer[1]);
2528                         writel(ARCMSR_INBOUND_MESG0_SET_CONFIG, \
2529                                                         &reg->inbound_msgaddr0);
2530                         if (!arcmsr_hba_wait_msgint_ready(acb)) {
2531                                 printk(KERN_NOTICE "arcmsr%d: ""set ccb high \
2532                                 part physical address timeout\n",
2533                                 acb->host->host_no);
2534                                 return 1;
2535                         }
2536                         arcmsr_enable_outbound_ints(acb, intmask_org);
2537                 }
2538                 }
2539                 break;
2540 
2541         case ACB_ADAPTER_TYPE_B: {
2542                 unsigned long post_queue_phyaddr;
2543                 uint32_t __iomem *rwbuffer;
2544 
2545                 struct MessageUnit_B *reg = acb->pmuB;
2546                 uint32_t intmask_org;
2547                 intmask_org = arcmsr_disable_outbound_ints(acb);
2548                 reg->postq_index = 0;
2549                 reg->doneq_index = 0;
2550                 writel(ARCMSR_MESSAGE_SET_POST_WINDOW, reg->drv2iop_doorbell);
2551                 if (!arcmsr_hbb_wait_msgint_ready(acb)) {
2552                         printk(KERN_NOTICE "arcmsr%d:can not set diver mode\n", \
2553                                 acb->host->host_no);
2554                         return 1;
2555                 }
2556                 post_queue_phyaddr = acb->dma_coherent_handle_hbb_mu;
2557                 rwbuffer = reg->message_rwbuffer;
2558                 /* driver "set config" signature */
2559                 writel(ARCMSR_SIGNATURE_SET_CONFIG, rwbuffer++);
2560                 /* normal should be zero */
2561                 writel(cdb_phyaddr_hi32, rwbuffer++);
2562                 /* postQ size (256 + 8)*4        */
2563                 writel(post_queue_phyaddr, rwbuffer++);
2564                 /* doneQ size (256 + 8)*4        */
2565                 writel(post_queue_phyaddr + 1056, rwbuffer++);
2566                 /* ccb maxQ size must be --> [(256 + 8)*4]*/
2567                 writel(1056, rwbuffer);
2568 
2569                 writel(ARCMSR_MESSAGE_SET_CONFIG, reg->drv2iop_doorbell);
2570                 if (!arcmsr_hbb_wait_msgint_ready(acb)) {
2571                         printk(KERN_NOTICE "arcmsr%d: 'set command Q window' \
2572                         timeout \n",acb->host->host_no);
2573                         return 1;
2574                 }
2575                 arcmsr_hbb_enable_driver_mode(acb);
2576                 arcmsr_enable_outbound_ints(acb, intmask_org);
2577                 }
2578                 break;
2579         case ACB_ADAPTER_TYPE_C: {
2580                 if (cdb_phyaddr_hi32 != 0) {
2581                         struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
2582 
2583                         printk(KERN_NOTICE "arcmsr%d: cdb_phyaddr_hi32=0x%x\n",
2584                                         acb->adapter_index, cdb_phyaddr_hi32);
2585                         writel(ARCMSR_SIGNATURE_SET_CONFIG, &reg->msgcode_rwbuffer[0]);
2586                         writel(cdb_phyaddr_hi32, &reg->msgcode_rwbuffer[1]);
2587                         writel(ARCMSR_INBOUND_MESG0_SET_CONFIG, &reg->inbound_msgaddr0);
2588                         writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
2589                         if (!arcmsr_hbc_wait_msgint_ready(acb)) {
2590                                 printk(KERN_NOTICE "arcmsr%d: 'set command Q window' \
2591                                 timeout \n", acb->host->host_no);
2592                                 return 1;
2593                         }
2594                 }
2595                 }
2596         }
2597         return 0;
2598 }
2599 
2600 static void arcmsr_wait_firmware_ready(struct AdapterControlBlock *acb)
2601 {
2602         uint32_t firmware_state = 0;
2603         switch (acb->adapter_type) {
2604 
2605         case ACB_ADAPTER_TYPE_A: {
2606                 struct MessageUnit_A __iomem *reg = acb->pmuA;
2607                 do {
2608                         firmware_state = readl(&reg->outbound_msgaddr1);
2609                 } while ((firmware_state & ARCMSR_OUTBOUND_MESG1_FIRMWARE_OK) == 0);
2610                 }
2611                 break;
2612 
2613         case ACB_ADAPTER_TYPE_B: {
2614                 struct MessageUnit_B *reg = acb->pmuB;
2615                 do {
2616                         firmware_state = readl(reg->iop2drv_doorbell);
2617                 } while ((firmware_state & ARCMSR_MESSAGE_FIRMWARE_OK) == 0);
2618                 writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT, reg->drv2iop_doorbell);
2619                 }
2620                 break;
2621         case ACB_ADAPTER_TYPE_C: {
2622                 struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
2623                 do {
2624                         firmware_state = readl(&reg->outbound_msgaddr1);
2625                 } while ((firmware_state & ARCMSR_HBCMU_MESSAGE_FIRMWARE_OK) == 0);
2626                 }
2627         }
2628 }
2629 
2630 static void arcmsr_request_hba_device_map(struct AdapterControlBlock *acb)
2631 {
2632         struct MessageUnit_A __iomem *reg = acb->pmuA;
2633         if (unlikely(atomic_read(&acb->rq_map_token) == 0) || ((acb->acb_flags & ACB_F_BUS_RESET) != 0 ) || ((acb->acb_flags & ACB_F_ABORT) != 0 )){
2634                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2635                 return;
2636         } else {
2637                 acb->fw_flag = FW_NORMAL;
2638                 if (atomic_read(&acb->ante_token_value) == atomic_read(&acb->rq_map_token)){
2639                         atomic_set(&acb->rq_map_token, 16);
2640                 }
2641                 atomic_set(&acb->ante_token_value, atomic_read(&acb->rq_map_token));
2642                 if (atomic_dec_and_test(&acb->rq_map_token)) {
2643                         mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2644                         return;
2645                 }
2646                 writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
2647                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2648         }
2649         return;
2650 }
2651 
2652 static void arcmsr_request_hbb_device_map(struct AdapterControlBlock *acb)
2653 {
2654         struct MessageUnit_B __iomem *reg = acb->pmuB;
2655         if (unlikely(atomic_read(&acb->rq_map_token) == 0) || ((acb->acb_flags & ACB_F_BUS_RESET) != 0 ) || ((acb->acb_flags & ACB_F_ABORT) != 0 )){
2656                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2657                 return;
2658         } else {
2659                 acb->fw_flag = FW_NORMAL;
2660                 if (atomic_read(&acb->ante_token_value) == atomic_read(&acb->rq_map_token)) {
2661                         atomic_set(&acb->rq_map_token, 16);
2662                 }
2663                 atomic_set(&acb->ante_token_value, atomic_read(&acb->rq_map_token));
2664                 if (atomic_dec_and_test(&acb->rq_map_token)) {
2665                         mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2666                         return;
2667                 }
2668                 writel(ARCMSR_MESSAGE_GET_CONFIG, reg->drv2iop_doorbell);
2669                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2670         }
2671         return;
2672 }
2673 
2674 static void arcmsr_request_hbc_device_map(struct AdapterControlBlock *acb)
2675 {
2676         struct MessageUnit_C __iomem *reg = acb->pmuC;
2677         if (unlikely(atomic_read(&acb->rq_map_token) == 0) || ((acb->acb_flags & ACB_F_BUS_RESET) != 0) || ((acb->acb_flags & ACB_F_ABORT) != 0)) {
2678                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2679                 return;
2680         } else {
2681                 acb->fw_flag = FW_NORMAL;
2682                 if (atomic_read(&acb->ante_token_value) == atomic_read(&acb->rq_map_token)) {
2683                         atomic_set(&acb->rq_map_token, 16);
2684                 }
2685                 atomic_set(&acb->ante_token_value, atomic_read(&acb->rq_map_token));
2686                 if (atomic_dec_and_test(&acb->rq_map_token)) {
2687                         mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2688                         return;
2689                 }
2690                 writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
2691                 writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
2692                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2693         }
2694         return;
2695 }
2696 
2697 static void arcmsr_request_device_map(unsigned long pacb)
2698 {
2699         struct AdapterControlBlock *acb = (struct AdapterControlBlock *)pacb;
2700         switch (acb->adapter_type) {
2701                 case ACB_ADAPTER_TYPE_A: {
2702                         arcmsr_request_hba_device_map(acb);
2703                 }
2704                 break;
2705                 case ACB_ADAPTER_TYPE_B: {
2706                         arcmsr_request_hbb_device_map(acb);
2707                 }
2708                 break;
2709                 case ACB_ADAPTER_TYPE_C: {
2710                         arcmsr_request_hbc_device_map(acb);
2711                 }
2712         }
2713 }
2714 
2715 static void arcmsr_start_hba_bgrb(struct AdapterControlBlock *acb)
2716 {
2717         struct MessageUnit_A __iomem *reg = acb->pmuA;
2718         acb->acb_flags |= ACB_F_MSG_START_BGRB;
2719         writel(ARCMSR_INBOUND_MESG0_START_BGRB, &reg->inbound_msgaddr0);
2720         if (!arcmsr_hba_wait_msgint_ready(acb)) {
2721                 printk(KERN_NOTICE "arcmsr%d: wait 'start adapter background \
2722                                 rebulid' timeout \n", acb->host->host_no);
2723         }
2724 }
2725 
2726 static void arcmsr_start_hbb_bgrb(struct AdapterControlBlock *acb)
2727 {
2728         struct MessageUnit_B *reg = acb->pmuB;
2729         acb->acb_flags |= ACB_F_MSG_START_BGRB;
2730         writel(ARCMSR_MESSAGE_START_BGRB, reg->drv2iop_doorbell);
2731         if (!arcmsr_hbb_wait_msgint_ready(acb)) {
2732                 printk(KERN_NOTICE "arcmsr%d: wait 'start adapter background \
2733                                 rebulid' timeout \n",acb->host->host_no);
2734         }
2735 }
2736 
2737 static void arcmsr_start_hbc_bgrb(struct AdapterControlBlock *pACB)
2738 {
2739         struct MessageUnit_C *phbcmu = (struct MessageUnit_C *)pACB->pmuC;
2740         pACB->acb_flags |= ACB_F_MSG_START_BGRB;
2741         writel(ARCMSR_INBOUND_MESG0_START_BGRB, &phbcmu->inbound_msgaddr0);
2742         writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &phbcmu->inbound_doorbell);
2743         if (!arcmsr_hbc_wait_msgint_ready(pACB)) {
2744                 printk(KERN_NOTICE "arcmsr%d: wait 'start adapter background \
2745                                 rebulid' timeout \n", pACB->host->host_no);
2746         }
2747         return;
2748 }
2749 static void arcmsr_start_adapter_bgrb(struct AdapterControlBlock *acb)
2750 {
2751         switch (acb->adapter_type) {
2752         case ACB_ADAPTER_TYPE_A:
2753                 arcmsr_start_hba_bgrb(acb);
2754                 break;
2755         case ACB_ADAPTER_TYPE_B:
2756                 arcmsr_start_hbb_bgrb(acb);
2757                 break;
2758         case ACB_ADAPTER_TYPE_C:
2759                 arcmsr_start_hbc_bgrb(acb);
2760         }
2761 }
2762 
2763 static void arcmsr_clear_doorbell_queue_buffer(struct AdapterControlBlock *acb)
2764 {
2765         switch (acb->adapter_type) {
2766         case ACB_ADAPTER_TYPE_A: {
2767                 struct MessageUnit_A __iomem *reg = acb->pmuA;
2768                 uint32_t outbound_doorbell;
2769                 /* empty doorbell Qbuffer if door bell ringed */
2770                 outbound_doorbell = readl(&reg->outbound_doorbell);
2771                 /*clear doorbell interrupt */
2772                 writel(outbound_doorbell, &reg->outbound_doorbell);
2773                 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, &reg->inbound_doorbell);
2774                 }
2775                 break;
2776 
2777         case ACB_ADAPTER_TYPE_B: {
2778                 struct MessageUnit_B *reg = acb->pmuB;
2779                 /*clear interrupt and message state*/
2780                 writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN, reg->iop2drv_doorbell);
2781                 writel(ARCMSR_DRV2IOP_DATA_READ_OK, reg->drv2iop_doorbell);
2782                 /* let IOP know data has been read */
2783                 }
2784                 break;
2785         case ACB_ADAPTER_TYPE_C: {
2786                 struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
2787                 uint32_t outbound_doorbell;
2788                 /* empty doorbell Qbuffer if door bell ringed */
2789                 outbound_doorbell = readl(&reg->outbound_doorbell);
2790                 writel(outbound_doorbell, &reg->outbound_doorbell_clear);
2791                 writel(ARCMSR_HBCMU_DRV2IOP_DATA_READ_OK, &reg->inbound_doorbell);
2792                 }
2793         }
2794 }
2795 
2796 static void arcmsr_enable_eoi_mode(struct AdapterControlBlock *acb)
2797 {
2798         switch (acb->adapter_type) {
2799         case ACB_ADAPTER_TYPE_A:
2800                 return;
2801         case ACB_ADAPTER_TYPE_B:
2802                 {
2803                         struct MessageUnit_B *reg = acb->pmuB;
2804                         writel(ARCMSR_MESSAGE_ACTIVE_EOI_MODE, reg->drv2iop_doorbell);
2805                         if (!arcmsr_hbb_wait_msgint_ready(acb)) {
2806                                 printk(KERN_NOTICE "ARCMSR IOP enables EOI_MODE TIMEOUT");
2807                                 return;
2808                         }
2809                 }
2810                 break;
2811         case ACB_ADAPTER_TYPE_C:
2812                 return;
2813         }
2814         return;
2815 }
2816 
2817 static void arcmsr_hardware_reset(struct AdapterControlBlock *acb)
2818 {
2819         uint8_t value[64];
2820         int i, count = 0;
2821         struct MessageUnit_A __iomem *pmuA = acb->pmuA;
2822         struct MessageUnit_C __iomem *pmuC = acb->pmuC;
2823 
2824         /* backup pci config data */
2825         printk(KERN_NOTICE "arcmsr%d: executing hw bus reset .....\n", acb->host->host_no);
2826         for (i = 0; i < 64; i++) {
2827                 pci_read_config_byte(acb->pdev, i, &value[i]);
2828         }
2829         /* hardware reset signal */
2830         if ((acb->dev_id == 0x1680)) {
2831                 writel(ARCMSR_ARC1680_BUS_RESET, &pmuA->reserved1[0]);
2832         } else if ((acb->dev_id == 0x1880)) {
2833                 do {
2834                         count++;
2835                         writel(0xF, &pmuC->write_sequence);
2836                         writel(0x4, &pmuC->write_sequence);
2837                         writel(0xB, &pmuC->write_sequence);
2838                         writel(0x2, &pmuC->write_sequence);
2839                         writel(0x7, &pmuC->write_sequence);
2840                         writel(0xD, &pmuC->write_sequence);
2841                 } while (((readl(&pmuC->host_diagnostic) & ARCMSR_ARC1880_DiagWrite_ENABLE) == 0) && (count < 5));
2842                 writel(ARCMSR_ARC1880_RESET_ADAPTER, &pmuC->host_diagnostic);
2843         } else {
2844                 pci_write_config_byte(acb->pdev, 0x84, 0x20);
2845         }
2846         msleep(2000);
2847         /* write back pci config data */
2848         for (i = 0; i < 64; i++) {
2849                 pci_write_config_byte(acb->pdev, i, value[i]);
2850         }
2851         msleep(1000);
2852         return;
2853 }
2854 static void arcmsr_iop_init(struct AdapterControlBlock *acb)
2855 {
2856         uint32_t intmask_org;
2857         /* disable all outbound interrupt */
2858         intmask_org = arcmsr_disable_outbound_ints(acb);
2859         arcmsr_wait_firmware_ready(acb);
2860         arcmsr_iop_confirm(acb);
2861         /*start background rebuild*/
2862         arcmsr_start_adapter_bgrb(acb);
2863         /* empty doorbell Qbuffer if door bell ringed */
2864         arcmsr_clear_doorbell_queue_buffer(acb);
2865         arcmsr_enable_eoi_mode(acb);
2866         /* enable outbound Post Queue,outbound doorbell Interrupt */
2867         arcmsr_enable_outbound_ints(acb, intmask_org);
2868         acb->acb_flags |= ACB_F_IOP_INITED;
2869 }
2870 
2871 static uint8_t arcmsr_iop_reset(struct AdapterControlBlock *acb)
2872 {
2873         struct CommandControlBlock *ccb;
2874         uint32_t intmask_org;
2875         uint8_t rtnval = 0x00;
2876         int i = 0;
2877         unsigned long flags;
2878 
2879         if (atomic_read(&acb->ccboutstandingcount) != 0) {
2880                 /* disable all outbound interrupt */
2881                 intmask_org = arcmsr_disable_outbound_ints(acb);
2882                 /* talk to iop 331 outstanding command aborted */
2883                 rtnval = arcmsr_abort_allcmd(acb);
2884                 /* clear all outbound posted Q */
2885                 arcmsr_done4abort_postqueue(acb);
2886                 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
2887                         ccb = acb->pccb_pool[i];
2888                         if (ccb->startdone == ARCMSR_CCB_START) {
2889                                 scsi_dma_unmap(ccb->pcmd);
2890                                 ccb->startdone = ARCMSR_CCB_DONE;
2891                                 ccb->ccb_flags = 0;
2892                                 spin_lock_irqsave(&acb->ccblist_lock, flags);
2893                                 list_add_tail(&ccb->list, &acb->ccb_free_list);
2894                                 spin_unlock_irqrestore(&acb->ccblist_lock, flags);
2895                         }
2896                 }
2897                 atomic_set(&acb->ccboutstandingcount, 0);
2898                 /* enable all outbound interrupt */
2899                 arcmsr_enable_outbound_ints(acb, intmask_org);
2900                 return rtnval;
2901         }
2902         return rtnval;
2903 }
2904 
2905 static int arcmsr_bus_reset(struct scsi_cmnd *cmd)
2906 {
2907         struct AdapterControlBlock *acb;
2908         uint32_t intmask_org, outbound_doorbell;
2909         int retry_count = 0;
2910         int rtn = FAILED;
2911         acb = (struct AdapterControlBlock *) cmd->device->host->hostdata;
2912         printk(KERN_ERR "arcmsr: executing bus reset eh.....num_resets = %d, num_aborts = %d \n", acb->num_resets, acb->num_aborts);
2913         acb->num_resets++;
2914 
2915         switch(acb->adapter_type){
2916                 case ACB_ADAPTER_TYPE_A:{
2917                         if (acb->acb_flags & ACB_F_BUS_RESET){
2918                                 long timeout;
2919                                 printk(KERN_ERR "arcmsr: there is an  bus reset eh proceeding.......\n");
2920                                 timeout = wait_event_timeout(wait_q, (acb->acb_flags & ACB_F_BUS_RESET) == 0, 220*HZ);
2921                                 if (timeout) {
2922                                         return SUCCESS;
2923                                 }
2924                         }
2925                         acb->acb_flags |= ACB_F_BUS_RESET;
2926                         if (!arcmsr_iop_reset(acb)) {
2927                                 struct MessageUnit_A __iomem *reg;
2928                                 reg = acb->pmuA;
2929                                 arcmsr_hardware_reset(acb);
2930                                 acb->acb_flags &= ~ACB_F_IOP_INITED;
2931 sleep_again:
2932                                 ssleep(ARCMSR_SLEEPTIME);
2933                                 if ((readl(&reg->outbound_msgaddr1) & ARCMSR_OUTBOUND_MESG1_FIRMWARE_OK) == 0) {
2934                                         printk(KERN_ERR "arcmsr%d: waiting for hw bus reset return, retry=%d\n", acb->host->host_no, retry_count);
2935                                         if (retry_count > ARCMSR_RETRYCOUNT) {
2936                                                 acb->fw_flag = FW_DEADLOCK;
2937                                                 printk(KERN_ERR "arcmsr%d: waiting for hw bus reset return, RETRY TERMINATED!!\n", acb->host->host_no);
2938                                                 return FAILED;
2939                                         }
2940                                         retry_count++;
2941                                         goto sleep_again;
2942                                 }
2943                                 acb->acb_flags |= ACB_F_IOP_INITED;
2944                                 /* disable all outbound interrupt */
2945                                 intmask_org = arcmsr_disable_outbound_ints(acb);
2946                                 arcmsr_get_firmware_spec(acb);
2947                                 arcmsr_start_adapter_bgrb(acb);
2948                                 /* clear Qbuffer if door bell ringed */
2949                                 outbound_doorbell = readl(&reg->outbound_doorbell);
2950                                 writel(outbound_doorbell, &reg->outbound_doorbell); /*clear interrupt */
2951                                 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, &reg->inbound_doorbell);
2952                                 /* enable outbound Post Queue,outbound doorbell Interrupt */
2953                                 arcmsr_enable_outbound_ints(acb, intmask_org);
2954                                 atomic_set(&acb->rq_map_token, 16);
2955                                 atomic_set(&acb->ante_token_value, 16);
2956                                 acb->fw_flag = FW_NORMAL;
2957                                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2958                                 acb->acb_flags &= ~ACB_F_BUS_RESET;
2959                                 rtn = SUCCESS;
2960                                 printk(KERN_ERR "arcmsr: scsi  bus reset eh returns with success\n");
2961                         } else {
2962                                 acb->acb_flags &= ~ACB_F_BUS_RESET;
2963                                 atomic_set(&acb->rq_map_token, 16);
2964                                 atomic_set(&acb->ante_token_value, 16);
2965                                 acb->fw_flag = FW_NORMAL;
2966                                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6*HZ));
2967                                 rtn = SUCCESS;
2968                         }
2969                         break;
2970                 }
2971                 case ACB_ADAPTER_TYPE_B:{
2972                         acb->acb_flags |= ACB_F_BUS_RESET;
2973                         if (!arcmsr_iop_reset(acb)) {
2974                                 acb->acb_flags &= ~ACB_F_BUS_RESET;
2975                                 rtn = FAILED;
2976                         } else {
2977                                 acb->acb_flags &= ~ACB_F_BUS_RESET;
2978                                 atomic_set(&acb->rq_map_token, 16);
2979                                 atomic_set(&acb->ante_token_value, 16);
2980                                 acb->fw_flag = FW_NORMAL;
2981                                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
2982                                 rtn = SUCCESS;
2983                         }
2984                         break;
2985                 }
2986                 case ACB_ADAPTER_TYPE_C:{
2987                         if (acb->acb_flags & ACB_F_BUS_RESET) {
2988                                 long timeout;
2989                                 printk(KERN_ERR "arcmsr: there is an bus reset eh proceeding.......\n");
2990                                 timeout = wait_event_timeout(wait_q, (acb->acb_flags & ACB_F_BUS_RESET) == 0, 220*HZ);
2991                                 if (timeout) {
2992                                         return SUCCESS;
2993                                 }
2994                         }
2995                         acb->acb_flags |= ACB_F_BUS_RESET;
2996                         if (!arcmsr_iop_reset(acb)) {
2997                                 struct MessageUnit_C __iomem *reg;
2998                                 reg = acb->pmuC;
2999                                 arcmsr_hardware_reset(acb);
3000                                 acb->acb_flags &= ~ACB_F_IOP_INITED;
3001 sleep:
3002                                 ssleep(ARCMSR_SLEEPTIME);
3003                                 if ((readl(&reg->host_diagnostic) & 0x04) != 0) {
3004                                         printk(KERN_ERR "arcmsr%d: waiting for hw bus reset return, retry=%d\n", acb->host->host_no, retry_count);
3005                                         if (retry_count > ARCMSR_RETRYCOUNT) {
3006                                                 acb->fw_flag = FW_DEADLOCK;
3007                                                 printk(KERN_ERR "arcmsr%d: waiting for hw bus reset return, RETRY TERMINATED!!\n", acb->host->host_no);
3008                                                 return FAILED;
3009                                         }
3010                                         retry_count++;
3011                                         goto sleep;
3012                                 }
3013                                 acb->acb_flags |= ACB_F_IOP_INITED;
3014                                 /* disable all outbound interrupt */
3015                                 intmask_org = arcmsr_disable_outbound_ints(acb);
3016                                 arcmsr_get_firmware_spec(acb);
3017                                 arcmsr_start_adapter_bgrb(acb);
3018                                 /* clear Qbuffer if door bell ringed */
3019                                 outbound_doorbell = readl(&reg->outbound_doorbell);
3020                                 writel(outbound_doorbell, &reg->outbound_doorbell_clear); /*clear interrupt */
3021                                 writel(ARCMSR_HBCMU_DRV2IOP_DATA_READ_OK, &reg->inbound_doorbell);
3022                                 /* enable outbound Post Queue,outbound doorbell Interrupt */
3023                                 arcmsr_enable_outbound_ints(acb, intmask_org);
3024                                 atomic_set(&acb->rq_map_token, 16);
3025                                 atomic_set(&acb->ante_token_value, 16);
3026                                 acb->fw_flag = FW_NORMAL;
3027                                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
3028                                 acb->acb_flags &= ~ACB_F_BUS_RESET;
3029                                 rtn = SUCCESS;
3030                                 printk(KERN_ERR "arcmsr: scsi bus reset eh returns with success\n");
3031                         } else {
3032                                 acb->acb_flags &= ~ACB_F_BUS_RESET;
3033                                 atomic_set(&acb->rq_map_token, 16);
3034                                 atomic_set(&acb->ante_token_value, 16);
3035                                 acb->fw_flag = FW_NORMAL;
3036                                 mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6*HZ));
3037                                 rtn = SUCCESS;
3038                         }
3039                         break;
3040                 }
3041         }
3042         return rtn;
3043 }
3044 
3045 static int arcmsr_abort_one_cmd(struct AdapterControlBlock *acb,
3046                 struct CommandControlBlock *ccb)
3047 {
3048         int rtn;
3049         rtn = arcmsr_polling_ccbdone(acb, ccb);
3050         return rtn;
3051 }
3052 
3053 static int arcmsr_abort(struct scsi_cmnd *cmd)
3054 {
3055         struct AdapterControlBlock *acb =
3056                 (struct AdapterControlBlock *)cmd->device->host->hostdata;
3057         int i = 0;
3058         int rtn = FAILED;
3059         printk(KERN_NOTICE
3060                 "arcmsr%d: abort device command of scsi id = %d lun = %d \n",
3061                 acb->host->host_no, cmd->device->id, cmd->device->lun);
3062         acb->acb_flags |= ACB_F_ABORT;
3063         acb->num_aborts++;
3064         /*
3065         ************************************************
3066         ** the all interrupt service routine is locked
3067         ** we need to handle it as soon as possible and exit
3068         ************************************************
3069         */
3070         if (!atomic_read(&acb->ccboutstandingcount))
3071                 return rtn;
3072 
3073         for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
3074                 struct CommandControlBlock *ccb = acb->pccb_pool[i];
3075                 if (ccb->startdone == ARCMSR_CCB_START && ccb->pcmd == cmd) {
3076                         ccb->startdone = ARCMSR_CCB_ABORTED;
3077                         rtn = arcmsr_abort_one_cmd(acb, ccb);
3078                         break;
3079                 }
3080         }
3081         acb->acb_flags &= ~ACB_F_ABORT;
3082         return rtn;
3083 }
3084 
3085 static const char *arcmsr_info(struct Scsi_Host *host)
3086 {
3087         struct AdapterControlBlock *acb =
3088                 (struct AdapterControlBlock *) host->hostdata;
3089         static char buf[256];
3090         char *type;
3091         int raid6 = 1;
3092         switch (acb->pdev->device) {
3093         case PCI_DEVICE_ID_ARECA_1110:
3094         case PCI_DEVICE_ID_ARECA_1200:
3095         case PCI_DEVICE_ID_ARECA_1202:
3096         case PCI_DEVICE_ID_ARECA_1210:
3097                 raid6 = 0;
3098                 /*FALLTHRU*/
3099         case PCI_DEVICE_ID_ARECA_1120:
3100         case PCI_DEVICE_ID_ARECA_1130:
3101         case PCI_DEVICE_ID_ARECA_1160:
3102         case PCI_DEVICE_ID_ARECA_1170:
3103         case PCI_DEVICE_ID_ARECA_1201:
3104         case PCI_DEVICE_ID_ARECA_1220:
3105         case PCI_DEVICE_ID_ARECA_1230:
3106         case PCI_DEVICE_ID_ARECA_1260:
3107         case PCI_DEVICE_ID_ARECA_1270:
3108         case PCI_DEVICE_ID_ARECA_1280:
3109                 type = "SATA";
3110                 break;
3111         case PCI_DEVICE_ID_ARECA_1380:
3112         case PCI_DEVICE_ID_ARECA_1381:
3113         case PCI_DEVICE_ID_ARECA_1680:
3114         case PCI_DEVICE_ID_ARECA_1681:
3115         case PCI_DEVICE_ID_ARECA_1880:
3116                 type = "SAS";
3117                 break;
3118         default:
3119                 type = "X-TYPE";
3120                 break;
3121         }
3122         sprintf(buf, "Areca %s Host Adapter RAID Controller%s\n %s",
3123                         type, raid6 ? "( RAID6 capable)" : "",
3124                         ARCMSR_DRIVER_VERSION);
3125         return buf;
3126 }
3127 

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