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Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6
[deliverable/linux.git] / drivers / scsi / arcmsr / arcmsr_hba.c
CommitLineData
1c57e86d
EC		 1/*
2*******************************************************************************
3** O.S : Linux
4** FILE NAME : arcmsr_hba.c
5** BY : Erich Chen
6** Description: SCSI RAID Device Driver for
7** ARECA RAID Host adapter
8*******************************************************************************
9** Copyright (C) 2002 - 2005, Areca Technology Corporation All rights reserved
10**
11** Web site: www.areca.com.tw
1a4f550a 12** E-mail: support@areca.com.tw
1c57e86d
EC		 13**
14** This program is free software; you can redistribute it and/or modify
15** it under the terms of the GNU General Public License version 2 as
16** published by the Free Software Foundation.
17** This program is distributed in the hope that it will be useful,
18** but WITHOUT ANY WARRANTY; without even the implied warranty of
19** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20** GNU General Public License for more details.
21*******************************************************************************
22** Redistribution and use in source and binary forms, with or without
23** modification, are permitted provided that the following conditions
24** are met:
25** 1. Redistributions of source code must retain the above copyright
26** notice, this list of conditions and the following disclaimer.
27** 2. Redistributions in binary form must reproduce the above copyright
28** notice, this list of conditions and the following disclaimer in the
29** documentation and/or other materials provided with the distribution.
30** 3. The name of the author may not be used to endorse or promote products
31** derived from this software without specific prior written permission.
32**
33** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
34** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
35** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
36** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
37** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES(INCLUDING,BUT
38** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
39** DATA, OR PROFITS; OR BUSINESS INTERRUPTION)HOWEVER CAUSED AND ON ANY
40** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
41** (INCLUDING NEGLIGENCE OR OTHERWISE)ARISING IN ANY WAY OUT OF THE USE OF
42** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
43*******************************************************************************
44** For history of changes, see Documentation/scsi/ChangeLog.arcmsr
45** Firmware Specification, see Documentation/scsi/arcmsr_spec.txt
46*******************************************************************************
47*/
48#include <linux/module.h>
49#include <linux/reboot.h>
50#include <linux/spinlock.h>
51#include <linux/pci_ids.h>
52#include <linux/interrupt.h>
53#include <linux/moduleparam.h>
54#include <linux/errno.h>
55#include <linux/types.h>
56#include <linux/delay.h>
57#include <linux/dma-mapping.h>
58#include <linux/timer.h>
59#include <linux/pci.h>
a1f6e021 60#include <linux/aer.h>
1c57e86d
EC		 61#include <asm/dma.h>
62#include <asm/io.h>
63#include <asm/system.h>
64#include <asm/uaccess.h>
65#include <scsi/scsi_host.h>
66#include <scsi/scsi.h>
67#include <scsi/scsi_cmnd.h>
68#include <scsi/scsi_tcq.h>
69#include <scsi/scsi_device.h>
70#include <scsi/scsi_transport.h>
71#include <scsi/scsicam.h>
72#include "arcmsr.h"
73
1a4f550a 74MODULE_AUTHOR("Erich Chen <support@areca.com.tw>");
a1f6e021 75MODULE_DESCRIPTION("ARECA (ARC11xx/12xx/13xx/16xx) SATA/SAS RAID HOST Adapter");
1c57e86d
EC		 76MODULE_LICENSE("Dual BSD/GPL");
77MODULE_VERSION(ARCMSR_DRIVER_VERSION);
78
1a4f550a
NC		 79static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb,
80 struct scsi_cmnd *cmd);
81static int arcmsr_iop_confirm(struct AdapterControlBlock *acb);
1c57e86d
EC		 82static int arcmsr_abort(struct scsi_cmnd *);
83static int arcmsr_bus_reset(struct scsi_cmnd *);
84static int arcmsr_bios_param(struct scsi_device *sdev,
1a4f550a
NC		 85 struct block_device *bdev, sector_t capacity, int *info);
86static int arcmsr_queue_command(struct scsi_cmnd *cmd,
87 void (*done) (struct scsi_cmnd *));
1c57e86d
EC		 88static int arcmsr_probe(struct pci_dev *pdev,
89 const struct pci_device_id *id);
90static void arcmsr_remove(struct pci_dev *pdev);
91static void arcmsr_shutdown(struct pci_dev *pdev);
92static void arcmsr_iop_init(struct AdapterControlBlock *acb);
93static void arcmsr_free_ccb_pool(struct AdapterControlBlock *acb);
1a4f550a 94static u32 arcmsr_disable_outbound_ints(struct AdapterControlBlock *acb);
1c57e86d 95static void arcmsr_stop_adapter_bgrb(struct AdapterControlBlock *acb);
1a4f550a
NC		 96static void arcmsr_flush_hba_cache(struct AdapterControlBlock *acb);
97static void arcmsr_flush_hbb_cache(struct AdapterControlBlock *acb);
1c57e86d
EC		 98static const char *arcmsr_info(struct Scsi_Host *);
99static irqreturn_t arcmsr_interrupt(struct AdapterControlBlock *acb);
1a4f550a
NC		 100static int arcmsr_adjust_disk_queue_depth(struct scsi_device *sdev,
101 int queue_depth)
1c57e86d
EC		 102{
103 if (queue_depth > ARCMSR_MAX_CMD_PERLUN)
104 queue_depth = ARCMSR_MAX_CMD_PERLUN;
105 scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG, queue_depth);
106 return queue_depth;
107}
108
109static struct scsi_host_template arcmsr_scsi_host_template = {
110 .module = THIS_MODULE,
a1f6e021 111 .name = "ARCMSR ARECA SATA/SAS RAID HOST Adapter"
112 ARCMSR_DRIVER_VERSION,
1c57e86d
EC		 113 .info = arcmsr_info,
114 .queuecommand = arcmsr_queue_command,
115 .eh_abort_handler = arcmsr_abort,
116 .eh_bus_reset_handler = arcmsr_bus_reset,
117 .bios_param = arcmsr_bios_param,
118 .change_queue_depth = arcmsr_adjust_disk_queue_depth,
119 .can_queue = ARCMSR_MAX_OUTSTANDING_CMD,
120 .this_id = ARCMSR_SCSI_INITIATOR_ID,
121 .sg_tablesize = ARCMSR_MAX_SG_ENTRIES,
122 .max_sectors = ARCMSR_MAX_XFER_SECTORS,
123 .cmd_per_lun = ARCMSR_MAX_CMD_PERLUN,
124 .use_clustering = ENABLE_CLUSTERING,
125 .shost_attrs = arcmsr_host_attrs,
126};
1a4f550a 127#ifdef CONFIG_SCSI_ARCMSR_AER
5975f643
AM		 128static pci_ers_result_t arcmsr_pci_slot_reset(struct pci_dev *pdev);
129static pci_ers_result_t arcmsr_pci_error_detected(struct pci_dev *pdev,
130 pci_channel_state_t state);
131
a1f6e021 132static struct pci_error_handlers arcmsr_pci_error_handlers = {
133 .error_detected = arcmsr_pci_error_detected,
134 .slot_reset = arcmsr_pci_slot_reset,
135};
1a4f550a 136#endif
1c57e86d
EC		 137static struct pci_device_id arcmsr_device_id_table[] = {
138 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1110)},
139 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1120)},
140 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1130)},
141 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1160)},
142 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1170)},
1a4f550a
NC		 143 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1200)},
144 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1201)},
145 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1202)},
1c57e86d
EC		 146 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1210)},
147 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1220)},
148 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1230)},
149 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1260)},
150 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1270)},
151 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1280)},
152 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1380)},
153 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1381)},
154 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1680)},
155 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1681)},
156 {0, 0}, /* Terminating entry */
157};
158MODULE_DEVICE_TABLE(pci, arcmsr_device_id_table);
159static struct pci_driver arcmsr_pci_driver = {
160 .name = "arcmsr",
161 .id_table = arcmsr_device_id_table,
162 .probe = arcmsr_probe,
163 .remove = arcmsr_remove,
a1f6e021 164 .shutdown = arcmsr_shutdown,
1a4f550a 165 #ifdef CONFIG_SCSI_ARCMSR_AER
a1f6e021 166 .err_handler = &arcmsr_pci_error_handlers,
1a4f550a 167 #endif
1c57e86d
EC		 168};
169
7d12e780 170static irqreturn_t arcmsr_do_interrupt(int irq, void *dev_id)
1c57e86d
EC		 171{
172 irqreturn_t handle_state;
1a4f550a 173 struct AdapterControlBlock *acb = dev_id;
1c57e86d 174
1a4f550a 175 spin_lock(acb->host->host_lock);
1c57e86d 176 handle_state = arcmsr_interrupt(acb);
1a4f550a
NC		 177 spin_unlock(acb->host->host_lock);
178
1c57e86d
EC		 179 return handle_state;
180}
181
182static int arcmsr_bios_param(struct scsi_device *sdev,
183 struct block_device *bdev, sector_t capacity, int *geom)
184{
185 int ret, heads, sectors, cylinders, total_capacity;
186 unsigned char *buffer;/* return copy of block device's partition table */
187
188 buffer = scsi_bios_ptable(bdev);
189 if (buffer) {
190 ret = scsi_partsize(buffer, capacity, &geom[2], &geom[0], &geom[1]);
191 kfree(buffer);
192 if (ret != -1)
193 return ret;
194 }
195 total_capacity = capacity;
196 heads = 64;
197 sectors = 32;
198 cylinders = total_capacity / (heads * sectors);
199 if (cylinders > 1024) {
200 heads = 255;
201 sectors = 63;
202 cylinders = total_capacity / (heads * sectors);
203 }
204 geom[0] = heads;
205 geom[1] = sectors;
206 geom[2] = cylinders;
207 return 0;
208}
209
1a4f550a 210static void arcmsr_define_adapter_type(struct AdapterControlBlock *acb)
1c57e86d
EC		 211{
212 struct pci_dev *pdev = acb->pdev;
1a4f550a
NC		 213 u16 dev_id;
214 pci_read_config_word(pdev, PCI_DEVICE_ID, &dev_id);
215 switch (dev_id) {
216 case 0x1201 : {
217 acb->adapter_type = ACB_ADAPTER_TYPE_B;
218 }
219 break;
220
221 default : acb->adapter_type = ACB_ADAPTER_TYPE_A;
222 }
223}
224
225static int arcmsr_alloc_ccb_pool(struct AdapterControlBlock *acb)
226{
227
228 switch (acb->adapter_type) {
1c57e86d 229
1a4f550a
NC		 230 case ACB_ADAPTER_TYPE_A: {
231 struct pci_dev *pdev = acb->pdev;
232 void *dma_coherent;
233 dma_addr_t dma_coherent_handle, dma_addr;
234 struct CommandControlBlock *ccb_tmp;
235 uint32_t intmask_org;
236 int i, j;
237
238 acb->pmu = ioremap(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0));
239 if (!acb->pmu) {
240 printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n",
241 acb->host->host_no);
242 }
243
244 dma_coherent = dma_alloc_coherent(&pdev->dev,
1c57e86d
EC		 245 ARCMSR_MAX_FREECCB_NUM *
246 sizeof (struct CommandControlBlock) + 0x20,
247 &dma_coherent_handle, GFP_KERNEL);
1a4f550a
NC		 248 if (!dma_coherent)
249 return -ENOMEM;
1c57e86d 250
1a4f550a
NC		 251 acb->dma_coherent = dma_coherent;
252 acb->dma_coherent_handle = dma_coherent_handle;
1c57e86d 253
1a4f550a
NC		 254 if (((unsigned long)dma_coherent & 0x1F)) {
255 dma_coherent = dma_coherent +
256 (0x20 - ((unsigned long)dma_coherent & 0x1F));
257 dma_coherent_handle = dma_coherent_handle +
258 (0x20 - ((unsigned long)dma_coherent_handle & 0x1F));
259 }
1c57e86d 260
1a4f550a
NC		 261 dma_addr = dma_coherent_handle;
262 ccb_tmp = (struct CommandControlBlock *)dma_coherent;
263 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
264 ccb_tmp->cdb_shifted_phyaddr = dma_addr >> 5;
265 ccb_tmp->acb = acb;
266 acb->pccb_pool[i] = ccb_tmp;
267 list_add_tail(&ccb_tmp->list, &acb->ccb_free_list);
268 dma_addr = dma_addr + sizeof(struct CommandControlBlock);
269 ccb_tmp++;
270 }
1c57e86d 271
1a4f550a
NC		 272 acb->vir2phy_offset = (unsigned long)ccb_tmp -(unsigned long)dma_addr;
273 for (i = 0; i < ARCMSR_MAX_TARGETID; i++)
274 for (j = 0; j < ARCMSR_MAX_TARGETLUN; j++)
275 acb->devstate[i][j] = ARECA_RAID_GONE;
1c57e86d 276
1a4f550a
NC		 277 /*
278 ** here we need to tell iop 331 our ccb_tmp.HighPart
279 ** if ccb_tmp.HighPart is not zero
280 */
281 intmask_org = arcmsr_disable_outbound_ints(acb);
282 }
283 break;
284
285 case ACB_ADAPTER_TYPE_B: {
286
287 struct pci_dev *pdev = acb->pdev;
288 struct MessageUnit_B *reg;
289 void *mem_base0, *mem_base1;
290 void *dma_coherent;
291 dma_addr_t dma_coherent_handle, dma_addr;
292 uint32_t intmask_org;
293 struct CommandControlBlock *ccb_tmp;
294 int i, j;
295
296 dma_coherent = dma_alloc_coherent(&pdev->dev,
297 ((ARCMSR_MAX_FREECCB_NUM *
298 sizeof(struct CommandControlBlock) + 0x20) +
299 sizeof(struct MessageUnit_B)),
300 &dma_coherent_handle, GFP_KERNEL);
301 if (!dma_coherent)
302 return -ENOMEM;
303
304 acb->dma_coherent = dma_coherent;
305 acb->dma_coherent_handle = dma_coherent_handle;
306
307 if (((unsigned long)dma_coherent & 0x1F)) {
308 dma_coherent = dma_coherent +
309 (0x20 - ((unsigned long)dma_coherent & 0x1F));
310 dma_coherent_handle = dma_coherent_handle +
311 (0x20 - ((unsigned long)dma_coherent_handle & 0x1F));
312 }
313
314 reg = (struct MessageUnit_B *)(dma_coherent +
315 ARCMSR_MAX_FREECCB_NUM * sizeof(struct CommandControlBlock));
316
317 dma_addr = dma_coherent_handle;
318 ccb_tmp = (struct CommandControlBlock *)dma_coherent;
319 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
320 ccb_tmp->cdb_shifted_phyaddr = dma_addr >> 5;
321 ccb_tmp->acb = acb;
322 acb->pccb_pool[i] = ccb_tmp;
323 list_add_tail(&ccb_tmp->list, &acb->ccb_free_list);
324 dma_addr = dma_addr + sizeof(struct CommandControlBlock);
325 ccb_tmp++;
326 }
327
328 reg = (struct MessageUnit_B *)(dma_coherent +
329 ARCMSR_MAX_FREECCB_NUM * sizeof(struct CommandControlBlock));
685b9e02 330 acb->pmu = (struct MessageUnit *)reg;
1a4f550a
NC		 331 mem_base0 = ioremap(pci_resource_start(pdev, 0),
332 pci_resource_len(pdev, 0));
333 mem_base1 = ioremap(pci_resource_start(pdev, 2),
334 pci_resource_len(pdev, 2));
335 reg->drv2iop_doorbell_reg = (uint32_t *)((char *)mem_base0 +
336 ARCMSR_DRV2IOP_DOORBELL);
337 reg->drv2iop_doorbell_mask_reg = (uint32_t *)((char *)mem_base0 +
338 ARCMSR_DRV2IOP_DOORBELL_MASK);
339 reg->iop2drv_doorbell_reg = (uint32_t *)((char *)mem_base0 +
340 ARCMSR_IOP2DRV_DOORBELL);
341 reg->iop2drv_doorbell_mask_reg = (uint32_t *)((char *)mem_base0 +
342 ARCMSR_IOP2DRV_DOORBELL_MASK);
343 reg->ioctl_wbuffer_reg = (uint32_t *)((char *)mem_base1 +
344 ARCMSR_IOCTL_WBUFFER);
345 reg->ioctl_rbuffer_reg = (uint32_t *)((char *)mem_base1 +
346 ARCMSR_IOCTL_RBUFFER);
347 reg->msgcode_rwbuffer_reg = (uint32_t *)((char *)mem_base1 +
348 ARCMSR_MSGCODE_RWBUFFER);
349
350 acb->vir2phy_offset = (unsigned long)ccb_tmp -(unsigned long)dma_addr;
351 for (i = 0; i < ARCMSR_MAX_TARGETID; i++)
352 for (j = 0; j < ARCMSR_MAX_TARGETLUN; j++)
353 acb->devstate[i][j] = ARECA_RAID_GOOD;
1c57e86d 354
1a4f550a
NC		 355 /*
356 ** here we need to tell iop 331 our ccb_tmp.HighPart
357 ** if ccb_tmp.HighPart is not zero
358 */
359 intmask_org = arcmsr_disable_outbound_ints(acb);
360 }
361 break;
362 }
1c57e86d
EC		 363 return 0;
364}
365
366static int arcmsr_probe(struct pci_dev *pdev,
367 const struct pci_device_id *id)
368{
369 struct Scsi_Host *host;
370 struct AdapterControlBlock *acb;
371 uint8_t bus, dev_fun;
372 int error;
373
374 error = pci_enable_device(pdev);
375 if (error)
376 goto out;
377 pci_set_master(pdev);
378
379 host = scsi_host_alloc(&arcmsr_scsi_host_template,
380 sizeof(struct AdapterControlBlock));
381 if (!host) {
382 error = -ENOMEM;
383 goto out_disable_device;
384 }
385 acb = (struct AdapterControlBlock *)host->hostdata;
386 memset(acb, 0, sizeof (struct AdapterControlBlock));
387
388 error = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
389 if (error) {
390 error = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
391 if (error) {
392 printk(KERN_WARNING
393 "scsi%d: No suitable DMA mask available\n",
394 host->host_no);
395 goto out_host_put;
396 }
397 }
398 bus = pdev->bus->number;
399 dev_fun = pdev->devfn;
400 acb->host = host;
401 acb->pdev = pdev;
402 host->max_sectors = ARCMSR_MAX_XFER_SECTORS;
403 host->max_lun = ARCMSR_MAX_TARGETLUN;
404 host->max_id = ARCMSR_MAX_TARGETID;/*16:8*/
405 host->max_cmd_len = 16; /*this is issue of 64bit LBA, over 2T byte*/
406 host->sg_tablesize = ARCMSR_MAX_SG_ENTRIES;
407 host->can_queue = ARCMSR_MAX_FREECCB_NUM; /* max simultaneous cmds */
408 host->cmd_per_lun = ARCMSR_MAX_CMD_PERLUN;
409 host->this_id = ARCMSR_SCSI_INITIATOR_ID;
410 host->unique_id = (bus << 8) | dev_fun;
411 host->irq = pdev->irq;
412 error = pci_request_regions(pdev, "arcmsr");
1a4f550a 413 if (error) {
1c57e86d 414 goto out_host_put;
1c57e86d 415 }
1a4f550a
NC		 416 arcmsr_define_adapter_type(acb);
417
1c57e86d
EC		 418 acb->acb_flags |= (ACB_F_MESSAGE_WQBUFFER_CLEARED |
419 ACB_F_MESSAGE_RQBUFFER_CLEARED |
420 ACB_F_MESSAGE_WQBUFFER_READED);
421 acb->acb_flags &= ~ACB_F_SCSISTOPADAPTER;
422 INIT_LIST_HEAD(&acb->ccb_free_list);
423
424 error = arcmsr_alloc_ccb_pool(acb);
425 if (error)
1a4f550a 426 goto out_release_regions;
1c57e86d
EC		 427
428 error = request_irq(pdev->irq, arcmsr_do_interrupt,
488a5c8a 429 IRQF_SHARED, "arcmsr", acb);
1c57e86d
EC		 430 if (error)
431 goto out_free_ccb_pool;
432
433 arcmsr_iop_init(acb);
434 pci_set_drvdata(pdev, host);
a1f6e021 435 if (strncmp(acb->firm_version, "V1.42", 5) >= 0)
436 host->max_sectors= ARCMSR_MAX_XFER_SECTORS_B;
1c57e86d
EC		 437
438 error = scsi_add_host(host, &pdev->dev);
439 if (error)
440 goto out_free_irq;
441
442 error = arcmsr_alloc_sysfs_attr(acb);
443 if (error)
444 goto out_free_sysfs;
445
446 scsi_scan_host(host);
1a4f550a 447 #ifdef CONFIG_SCSI_ARCMSR_AER
a1f6e021 448 pci_enable_pcie_error_reporting(pdev);
1a4f550a 449 #endif
1c57e86d
EC		 450 return 0;
451 out_free_sysfs:
452 out_free_irq:
453 free_irq(pdev->irq, acb);
454 out_free_ccb_pool:
455 arcmsr_free_ccb_pool(acb);
1c57e86d
EC		 456 iounmap(acb->pmu);
457 out_release_regions:
458 pci_release_regions(pdev);
459 out_host_put:
460 scsi_host_put(host);
461 out_disable_device:
462 pci_disable_device(pdev);
463 out:
464 return error;
465}
466
1a4f550a
NC		 467static uint8_t arcmsr_hba_wait_msgint_ready(struct AdapterControlBlock *acb)
468{
469 struct MessageUnit_A __iomem *reg = (struct MessageUnit_A *)acb->pmu;
470 uint32_t Index;
471 uint8_t Retries = 0x00;
472
473 do {
474 for (Index = 0; Index < 100; Index++) {
475 if (readl(&reg->outbound_intstatus) &
476 ARCMSR_MU_OUTBOUND_MESSAGE0_INT) {
477 writel(ARCMSR_MU_OUTBOUND_MESSAGE0_INT,
478 &reg->outbound_intstatus);
479 return 0x00;
480 }
481 msleep(10);
482 }/*max 1 seconds*/
483
484 } while (Retries++ < 20);/*max 20 sec*/
485 return 0xff;
486}
487
488static uint8_t arcmsr_hbb_wait_msgint_ready(struct AdapterControlBlock *acb)
489{
490 struct MessageUnit_B *reg = (struct MessageUnit_B *)acb->pmu;
491 uint32_t Index;
492 uint8_t Retries = 0x00;
493
494 do {
495 for (Index = 0; Index < 100; Index++) {
496 if (readl(reg->iop2drv_doorbell_reg)
497 & ARCMSR_IOP2DRV_MESSAGE_CMD_DONE) {
498 writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN
499 , reg->iop2drv_doorbell_reg);
500 return 0x00;
501 }
502 msleep(10);
503 }/*max 1 seconds*/
504
505 } while (Retries++ < 20);/*max 20 sec*/
506 return 0xff;
507}
508
509static void arcmsr_abort_hba_allcmd(struct AdapterControlBlock *acb)
1c57e86d 510{
1a4f550a 511 struct MessageUnit_A __iomem *reg = (struct MessageUnit_A *)acb->pmu;
1c57e86d
EC		 512
513 writel(ARCMSR_INBOUND_MESG0_ABORT_CMD, &reg->inbound_msgaddr0);
1a4f550a
NC		 514 if (arcmsr_hba_wait_msgint_ready(acb))
515 printk(KERN_NOTICE
516 "arcmsr%d: wait 'abort all outstanding command' timeout \n"
517 , acb->host->host_no);
518}
519
520static void arcmsr_abort_hbb_allcmd(struct AdapterControlBlock *acb)
521{
522 struct MessageUnit_B *reg = (struct MessageUnit_B *)acb->pmu;
523
524 writel(ARCMSR_MESSAGE_ABORT_CMD, reg->drv2iop_doorbell_reg);
525 if (arcmsr_hbb_wait_msgint_ready(acb))
1c57e86d
EC		 526 printk(KERN_NOTICE
527 "arcmsr%d: wait 'abort all outstanding command' timeout \n"
528 , acb->host->host_no);
529}
530
1a4f550a
NC		 531static void arcmsr_abort_allcmd(struct AdapterControlBlock *acb)
532{
533 switch (acb->adapter_type) {
534 case ACB_ADAPTER_TYPE_A: {
535 arcmsr_abort_hba_allcmd(acb);
536 }
537 break;
538
539 case ACB_ADAPTER_TYPE_B: {
540 arcmsr_abort_hbb_allcmd(acb);
541 }
542 }
543}
544
1c57e86d
EC		 545static void arcmsr_pci_unmap_dma(struct CommandControlBlock *ccb)
546{
1c57e86d
EC		 547 struct scsi_cmnd *pcmd = ccb->pcmd;
548
deff2627 549 scsi_dma_unmap(pcmd);
1c57e86d
EC		 550}
551
552static void arcmsr_ccb_complete(struct CommandControlBlock *ccb, int stand_flag)
553{
554 struct AdapterControlBlock *acb = ccb->acb;
555 struct scsi_cmnd *pcmd = ccb->pcmd;
556
557 arcmsr_pci_unmap_dma(ccb);
558 if (stand_flag == 1)
559 atomic_dec(&acb->ccboutstandingcount);
560 ccb->startdone = ARCMSR_CCB_DONE;
561 ccb->ccb_flags = 0;
562 list_add_tail(&ccb->list, &acb->ccb_free_list);
563 pcmd->scsi_done(pcmd);
564}
565
1a4f550a
NC		 566static void arcmsr_flush_hba_cache(struct AdapterControlBlock *acb)
567{
568 struct MessageUnit_A __iomem *reg = (struct MessageUnit_A *)acb->pmu;
569 int retry_count = 30;
570
571 writel(ARCMSR_INBOUND_MESG0_FLUSH_CACHE, &reg->inbound_msgaddr0);
572 do {
573 if (!arcmsr_hba_wait_msgint_ready(acb))
574 break;
575 else {
576 retry_count--;
577 printk(KERN_NOTICE "arcmsr%d: wait 'flush adapter cache' \
578 timeout, retry count down = %d \n", acb->host->host_no, retry_count);
579 }
580 } while (retry_count != 0);
581}
582
583static void arcmsr_flush_hbb_cache(struct AdapterControlBlock *acb)
584{
585 struct MessageUnit_B *reg = (struct MessageUnit_B *)acb->pmu;
586 int retry_count = 30;
587
588 writel(ARCMSR_MESSAGE_FLUSH_CACHE, reg->drv2iop_doorbell_reg);
589 do {
590 if (!arcmsr_hbb_wait_msgint_ready(acb))
591 break;
592 else {
593 retry_count--;
594 printk(KERN_NOTICE "arcmsr%d: wait 'flush adapter cache' \
595 timeout,retry count down = %d \n", acb->host->host_no, retry_count);
596 }
597 } while (retry_count != 0);
598}
599
600static void arcmsr_flush_adapter_cache(struct AdapterControlBlock *acb)
601{
602 switch (acb->adapter_type) {
603
604 case ACB_ADAPTER_TYPE_A: {
605 arcmsr_flush_hba_cache(acb);
606 }
607 break;
608
609 case ACB_ADAPTER_TYPE_B: {
610 arcmsr_flush_hbb_cache(acb);
611 }
612 }
613}
614
615static void arcmsr_report_sense_info(struct CommandControlBlock *ccb)
616{
617
618 struct scsi_cmnd *pcmd = ccb->pcmd;
619 struct SENSE_DATA *sensebuffer = (struct SENSE_DATA *)pcmd->sense_buffer;
620
621 pcmd->result = DID_OK << 16;
622 if (sensebuffer) {
623 int sense_data_length =
624 sizeof(struct SENSE_DATA) < sizeof(pcmd->sense_buffer)
625 ? sizeof(struct SENSE_DATA) : sizeof(pcmd->sense_buffer);
626 memset(sensebuffer, 0, sizeof(pcmd->sense_buffer));
627 memcpy(sensebuffer, ccb->arcmsr_cdb.SenseData, sense_data_length);
628 sensebuffer->ErrorCode = SCSI_SENSE_CURRENT_ERRORS;
629 sensebuffer->Valid = 1;
630 }
631}
632
633static u32 arcmsr_disable_outbound_ints(struct AdapterControlBlock *acb)
634{
635 u32 orig_mask = 0;
636 switch (acb->adapter_type) {
637
638 case ACB_ADAPTER_TYPE_A : {
639 struct MessageUnit_A __iomem *reg = (struct MessageUnit_A *)acb->pmu;
640 orig_mask = readl(&reg->outbound_intmask)|\
641 ARCMSR_MU_OUTBOUND_MESSAGE0_INTMASKENABLE;
642 writel(orig_mask|ARCMSR_MU_OUTBOUND_ALL_INTMASKENABLE, \
643 &reg->outbound_intmask);
644 }
645 break;
646
647 case ACB_ADAPTER_TYPE_B : {
648 struct MessageUnit_B *reg = (struct MessageUnit_B *)acb->pmu;
649 orig_mask = readl(reg->iop2drv_doorbell_mask_reg) & \
650 (~ARCMSR_IOP2DRV_MESSAGE_CMD_DONE);
651 writel(0, reg->iop2drv_doorbell_mask_reg);
652 }
653 break;
654 }
655 return orig_mask;
656}
657
658static void arcmsr_report_ccb_state(struct AdapterControlBlock *acb, \
659 struct CommandControlBlock *ccb, uint32_t flag_ccb)
660{
661
662 uint8_t id, lun;
663 id = ccb->pcmd->device->id;
664 lun = ccb->pcmd->device->lun;
665 if (!(flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR)) {
666 if (acb->devstate[id][lun] == ARECA_RAID_GONE)
667 acb->devstate[id][lun] = ARECA_RAID_GOOD;
668 ccb->pcmd->result = DID_OK << 16;
669 arcmsr_ccb_complete(ccb, 1);
670 } else {
671 switch (ccb->arcmsr_cdb.DeviceStatus) {
672 case ARCMSR_DEV_SELECT_TIMEOUT: {
673 acb->devstate[id][lun] = ARECA_RAID_GONE;
674 ccb->pcmd->result = DID_NO_CONNECT << 16;
675 arcmsr_ccb_complete(ccb, 1);
676 }
677 break;
678
679 case ARCMSR_DEV_ABORTED:
680
681 case ARCMSR_DEV_INIT_FAIL: {
682 acb->devstate[id][lun] = ARECA_RAID_GONE;
683 ccb->pcmd->result = DID_BAD_TARGET << 16;
684 arcmsr_ccb_complete(ccb, 1);
685 }
686 break;
687
688 case ARCMSR_DEV_CHECK_CONDITION: {
689 acb->devstate[id][lun] = ARECA_RAID_GOOD;
690 arcmsr_report_sense_info(ccb);
691 arcmsr_ccb_complete(ccb, 1);
692 }
693 break;
694
695 default:
696 printk(KERN_NOTICE
697 "arcmsr%d: scsi id = %d lun = %d"
698 " isr get command error done, "
699 "but got unknown DeviceStatus = 0x%x \n"
700 , acb->host->host_no
701 , id
702 , lun
703 , ccb->arcmsr_cdb.DeviceStatus);
704 acb->devstate[id][lun] = ARECA_RAID_GONE;
705 ccb->pcmd->result = DID_NO_CONNECT << 16;
706 arcmsr_ccb_complete(ccb, 1);
707 break;
708 }
709 }
710}
711
712static void arcmsr_drain_donequeue(struct AdapterControlBlock *acb, uint32_t flag_ccb)
713
714{
715 struct CommandControlBlock *ccb;
716
717 ccb = (struct CommandControlBlock *)(acb->vir2phy_offset + (flag_ccb << 5));
718 if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) {
719 if (ccb->startdone == ARCMSR_CCB_ABORTED) {
720 struct scsi_cmnd *abortcmd = ccb->pcmd;
721 if (abortcmd) {
722 abortcmd->result |= DID_ABORT << 16;
723 arcmsr_ccb_complete(ccb, 1);
724 printk(KERN_NOTICE "arcmsr%d: ccb ='0x%p' \
725 isr got aborted command \n", acb->host->host_no, ccb);
726 }
727 }
728 printk(KERN_NOTICE "arcmsr%d: isr get an illegal ccb command \
729 done acb = '0x%p'"
730 "ccb = '0x%p' ccbacb = '0x%p' startdone = 0x%x"
731 " ccboutstandingcount = %d \n"
732 , acb->host->host_no
733 , acb
734 , ccb
735 , ccb->acb
736 , ccb->startdone
737 , atomic_read(&acb->ccboutstandingcount));
738 }
739 arcmsr_report_ccb_state(acb, ccb, flag_ccb);
740}
741
742static void arcmsr_done4abort_postqueue(struct AdapterControlBlock *acb)
743{
744 int i = 0;
745 uint32_t flag_ccb;
746
747 switch (acb->adapter_type) {
748
749 case ACB_ADAPTER_TYPE_A: {
750 struct MessageUnit_A __iomem *reg = \
751 (struct MessageUnit_A *)acb->pmu;
752 uint32_t outbound_intstatus;
753 outbound_intstatus = readl(&reg->outbound_intstatus) & \
754 acb->outbound_int_enable;
755 /*clear and abort all outbound posted Q*/
756 writel(outbound_intstatus, &reg->outbound_intstatus);/*clear interrupt*/
757 while (((flag_ccb = readl(&reg->outbound_queueport)) != 0xFFFFFFFF) \
758 && (i++ < ARCMSR_MAX_OUTSTANDING_CMD)) {
759 arcmsr_drain_donequeue(acb, flag_ccb);
760 }
761 }
762 break;
763
764 case ACB_ADAPTER_TYPE_B: {
765 struct MessageUnit_B *reg = (struct MessageUnit_B *)acb->pmu;
766 /*clear all outbound posted Q*/
767 for (i = 0; i < ARCMSR_MAX_HBB_POSTQUEUE; i++) {
768 if ((flag_ccb = readl(&reg->done_qbuffer[i])) != 0) {
769 writel(0, &reg->done_qbuffer[i]);
770 arcmsr_drain_donequeue(acb, flag_ccb);
771 }
772 writel(0, &reg->post_qbuffer[i]);
773 }
774 reg->doneq_index = 0;
775 reg->postq_index = 0;
776 }
777 break;
778 }
779}
1c57e86d
EC		 780static void arcmsr_remove(struct pci_dev *pdev)
781{
782 struct Scsi_Host *host = pci_get_drvdata(pdev);
783 struct AdapterControlBlock *acb =
784 (struct AdapterControlBlock *) host->hostdata;
1c57e86d
EC		 785 int poll_count = 0;
786
787 arcmsr_free_sysfs_attr(acb);
788 scsi_remove_host(host);
789 arcmsr_stop_adapter_bgrb(acb);
790 arcmsr_flush_adapter_cache(acb);
1a4f550a 791 arcmsr_disable_outbound_ints(acb);
1c57e86d
EC		 792 acb->acb_flags |= ACB_F_SCSISTOPADAPTER;
793 acb->acb_flags &= ~ACB_F_IOP_INITED;
794
1a4f550a 795 for (poll_count = 0; poll_count < ARCMSR_MAX_OUTSTANDING_CMD; poll_count++) {
1c57e86d
EC		 796 if (!atomic_read(&acb->ccboutstandingcount))
797 break;
1a4f550a 798 arcmsr_interrupt(acb);/* FIXME: need spinlock */
1c57e86d
EC		 799 msleep(25);
800 }
801
802 if (atomic_read(&acb->ccboutstandingcount)) {
803 int i;
804
805 arcmsr_abort_allcmd(acb);
1a4f550a 806 arcmsr_done4abort_postqueue(acb);
1c57e86d
EC		 807 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
808 struct CommandControlBlock *ccb = acb->pccb_pool[i];
809 if (ccb->startdone == ARCMSR_CCB_START) {
810 ccb->startdone = ARCMSR_CCB_ABORTED;
811 ccb->pcmd->result = DID_ABORT << 16;
812 arcmsr_ccb_complete(ccb, 1);
813 }
814 }
815 }
816
817 free_irq(pdev->irq, acb);
818 iounmap(acb->pmu);
819 arcmsr_free_ccb_pool(acb);
820 pci_release_regions(pdev);
821
822 scsi_host_put(host);
823
824 pci_disable_device(pdev);
825 pci_set_drvdata(pdev, NULL);
826}
827
828static void arcmsr_shutdown(struct pci_dev *pdev)
829{
830 struct Scsi_Host *host = pci_get_drvdata(pdev);
831 struct AdapterControlBlock *acb =
832 (struct AdapterControlBlock *)host->hostdata;
833
834 arcmsr_stop_adapter_bgrb(acb);
835 arcmsr_flush_adapter_cache(acb);
836}
837
838static int arcmsr_module_init(void)
839{
840 int error = 0;
841
842 error = pci_register_driver(&arcmsr_pci_driver);
843 return error;
844}
845
846static void arcmsr_module_exit(void)
847{
848 pci_unregister_driver(&arcmsr_pci_driver);
849}
850module_init(arcmsr_module_init);
851module_exit(arcmsr_module_exit);
852
1a4f550a
NC		 853static void arcmsr_enable_outbound_ints(struct AdapterControlBlock *acb, \
854 u32 intmask_org)
1c57e86d 855{
1c57e86d
EC		 856 u32 mask;
857
1a4f550a 858 switch (acb->adapter_type) {
1c57e86d 859
1a4f550a
NC		 860 case ACB_ADAPTER_TYPE_A : {
861 struct MessageUnit_A __iomem *reg = (struct MessageUnit_A *)acb->pmu;
862 mask = intmask_org & ~(ARCMSR_MU_OUTBOUND_POSTQUEUE_INTMASKENABLE |
863 ARCMSR_MU_OUTBOUND_DOORBELL_INTMASKENABLE);
864 writel(mask, &reg->outbound_intmask);
865 acb->outbound_int_enable = ~(intmask_org & mask) & 0x000000ff;
866 }
867 break;
1c57e86d 868
1a4f550a
NC		 869 case ACB_ADAPTER_TYPE_B : {
870 struct MessageUnit_B *reg = (struct MessageUnit_B *)acb->pmu;
871 mask = intmask_org | (ARCMSR_IOP2DRV_DATA_WRITE_OK | \
872 ARCMSR_IOP2DRV_DATA_READ_OK | ARCMSR_IOP2DRV_CDB_DONE);
873 writel(mask, reg->iop2drv_doorbell_mask_reg);
874 acb->outbound_int_enable = (intmask_org | mask) & 0x0000000f;
875 }
1c57e86d
EC		 876 }
877}
878
1a4f550a
NC		 879static void arcmsr_build_ccb(struct AdapterControlBlock *acb,
880 struct CommandControlBlock *ccb, struct scsi_cmnd *pcmd)
1c57e86d 881{
1a4f550a
NC		 882 struct ARCMSR_CDB *arcmsr_cdb = (struct ARCMSR_CDB *)&ccb->arcmsr_cdb;
883 int8_t *psge = (int8_t *)&arcmsr_cdb->u;
884 uint32_t address_lo, address_hi;
885 int arccdbsize = 0x30;
886 int nseg;
1c57e86d
EC		 887
888 ccb->pcmd = pcmd;
1a4f550a 889 memset(arcmsr_cdb, 0, sizeof(struct ARCMSR_CDB));
1c57e86d
EC		 890 arcmsr_cdb->Bus = 0;
891 arcmsr_cdb->TargetID = pcmd->device->id;
892 arcmsr_cdb->LUN = pcmd->device->lun;
893 arcmsr_cdb->Function = 1;
894 arcmsr_cdb->CdbLength = (uint8_t)pcmd->cmd_len;
895 arcmsr_cdb->Context = (unsigned long)arcmsr_cdb;
896 memcpy(arcmsr_cdb->Cdb, pcmd->cmnd, pcmd->cmd_len);
deff2627
FT		 897
898 nseg = scsi_dma_map(pcmd);
899 BUG_ON(nseg < 0);
900
901 if (nseg) {
902 int length, i, cdb_sgcount = 0;
903 struct scatterlist *sg;
904
1c57e86d 905 /* map stor port SG list to our iop SG List. */
deff2627 906 scsi_for_each_sg(pcmd, sg, nseg, i) {
1c57e86d 907 /* Get the physical address of the current data pointer */
deff2627
FT		 908 length = cpu_to_le32(sg_dma_len(sg));
909 address_lo = cpu_to_le32(dma_addr_lo32(sg_dma_address(sg)));
910 address_hi = cpu_to_le32(dma_addr_hi32(sg_dma_address(sg)));
1c57e86d
EC		 911 if (address_hi == 0) {
912 struct SG32ENTRY *pdma_sg = (struct SG32ENTRY *)psge;
913
914 pdma_sg->address = address_lo;
915 pdma_sg->length = length;
916 psge += sizeof (struct SG32ENTRY);
917 arccdbsize += sizeof (struct SG32ENTRY);
918 } else {
919 struct SG64ENTRY *pdma_sg = (struct SG64ENTRY *)psge;
920
921 pdma_sg->addresshigh = address_hi;
922 pdma_sg->address = address_lo;
923 pdma_sg->length = length|IS_SG64_ADDR;
924 psge += sizeof (struct SG64ENTRY);
925 arccdbsize += sizeof (struct SG64ENTRY);
926 }
1c57e86d
EC		 927 cdb_sgcount++;
928 }
929 arcmsr_cdb->sgcount = (uint8_t)cdb_sgcount;
deff2627 930 arcmsr_cdb->DataLength = scsi_bufflen(pcmd);
1c57e86d
EC		 931 if ( arccdbsize > 256)
932 arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_SGL_BSIZE;
1c57e86d
EC		 933 }
934 if (pcmd->sc_data_direction == DMA_TO_DEVICE ) {
935 arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_WRITE;
936 ccb->ccb_flags |= CCB_FLAG_WRITE;
937 }
938}
939
940static void arcmsr_post_ccb(struct AdapterControlBlock *acb, struct CommandControlBlock *ccb)
941{
1c57e86d
EC		 942 uint32_t cdb_shifted_phyaddr = ccb->cdb_shifted_phyaddr;
943 struct ARCMSR_CDB *arcmsr_cdb = (struct ARCMSR_CDB *)&ccb->arcmsr_cdb;
1c57e86d
EC		 944 atomic_inc(&acb->ccboutstandingcount);
945 ccb->startdone = ARCMSR_CCB_START;
1a4f550a
NC		 946
947 switch (acb->adapter_type) {
948 case ACB_ADAPTER_TYPE_A: {
949 struct MessageUnit_A *reg = (struct MessageUnit_A *)acb->pmu;
950
951 if (arcmsr_cdb->Flags & ARCMSR_CDB_FLAG_SGL_BSIZE)
952 writel(cdb_shifted_phyaddr | ARCMSR_CCBPOST_FLAG_SGL_BSIZE,
1c57e86d 953 &reg->inbound_queueport);
1a4f550a
NC		 954 else {
955 writel(cdb_shifted_phyaddr, &reg->inbound_queueport);
956 }
957 }
958 break;
1c57e86d 959
1a4f550a
NC		 960 case ACB_ADAPTER_TYPE_B: {
961 struct MessageUnit_B *reg = (struct MessageUnit_B *)acb->pmu;
962 uint32_t ending_index, index = reg->postq_index;
1c57e86d 963
1a4f550a
NC		 964 ending_index = ((index + 1) % ARCMSR_MAX_HBB_POSTQUEUE);
965 writel(0, &reg->post_qbuffer[ending_index]);
966 if (arcmsr_cdb->Flags & ARCMSR_CDB_FLAG_SGL_BSIZE) {
967 writel(cdb_shifted_phyaddr | ARCMSR_CCBPOST_FLAG_SGL_BSIZE,\
968 &reg->post_qbuffer[index]);
969 }
970 else {
971 writel(cdb_shifted_phyaddr, &reg->post_qbuffer[index]);
972 }
973 index++;
974 index %= ARCMSR_MAX_HBB_POSTQUEUE;/*if last index number set it to 0 */
975 reg->postq_index = index;
976 writel(ARCMSR_DRV2IOP_CDB_POSTED, reg->drv2iop_doorbell_reg);
1c57e86d 977 }
1a4f550a 978 break;
1c57e86d
EC		 979 }
980}
981
1a4f550a 982static void arcmsr_stop_hba_bgrb(struct AdapterControlBlock *acb)
1c57e86d 983{
1a4f550a 984 struct MessageUnit_A __iomem *reg = (struct MessageUnit_A *)acb->pmu;
1c57e86d
EC		 985 acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
986 writel(ARCMSR_INBOUND_MESG0_STOP_BGRB, &reg->inbound_msgaddr0);
1a4f550a
NC		 987
988 if (arcmsr_hba_wait_msgint_ready(acb)) {
989 printk(KERN_NOTICE
990 "arcmsr%d: wait 'stop adapter background rebulid' timeout \n"
991 , acb->host->host_no);
992 }
993}
994
995static void arcmsr_stop_hbb_bgrb(struct AdapterControlBlock *acb)
996{
997 struct MessageUnit_B *reg = (struct MessageUnit_B *)acb->pmu;
998 acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
999 writel(ARCMSR_MESSAGE_STOP_BGRB, reg->drv2iop_doorbell_reg);
1000
1001 if (arcmsr_hbb_wait_msgint_ready(acb)) {
1c57e86d
EC		 1002 printk(KERN_NOTICE
1003 "arcmsr%d: wait 'stop adapter background rebulid' timeout \n"
1004 , acb->host->host_no);
1a4f550a
NC		 1005 }
1006}
1007
1008static void arcmsr_stop_adapter_bgrb(struct AdapterControlBlock *acb)
1009{
1010 switch (acb->adapter_type) {
1011 case ACB_ADAPTER_TYPE_A: {
1012 arcmsr_stop_hba_bgrb(acb);
1013 }
1014 break;
1015
1016 case ACB_ADAPTER_TYPE_B: {
1017 arcmsr_stop_hbb_bgrb(acb);
1018 }
1019 break;
1020 }
1c57e86d
EC		 1021}
1022
1023static void arcmsr_free_ccb_pool(struct AdapterControlBlock *acb)
1024{
1025 dma_free_coherent(&acb->pdev->dev,
1026 ARCMSR_MAX_FREECCB_NUM * sizeof (struct CommandControlBlock) + 0x20,
1027 acb->dma_coherent,
1028 acb->dma_coherent_handle);
1029}
1030
1a4f550a 1031void arcmsr_iop_message_read(struct AdapterControlBlock *acb)
1c57e86d 1032{
1a4f550a
NC		 1033 switch (acb->adapter_type) {
1034 case ACB_ADAPTER_TYPE_A: {
1035 struct MessageUnit_A __iomem *reg = (struct MessageUnit_A *)acb->pmu;
1036 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, &reg->inbound_doorbell);
1037 }
1038 break;
1c57e86d 1039
1a4f550a
NC		 1040 case ACB_ADAPTER_TYPE_B: {
1041 struct MessageUnit_B *reg = (struct MessageUnit_B *)acb->pmu;
1042 writel(ARCMSR_DRV2IOP_DATA_READ_OK, reg->drv2iop_doorbell_reg);
1c57e86d 1043 }
1a4f550a 1044 break;
1c57e86d 1045 }
1a4f550a
NC		 1046}
1047
1048static void arcmsr_iop_message_wrote(struct AdapterControlBlock *acb)
1049{
1050 switch (acb->adapter_type) {
1051 case ACB_ADAPTER_TYPE_A: {
1052 struct MessageUnit_A __iomem *reg = (struct MessageUnit_A *)acb->pmu;
1c57e86d 1053 /*
1a4f550a
NC		 1054 ** push inbound doorbell tell iop, driver data write ok
1055 ** and wait reply on next hwinterrupt for next Qbuffer post
1c57e86d 1056 */
1a4f550a
NC		 1057 writel(ARCMSR_INBOUND_DRIVER_DATA_WRITE_OK, &reg->inbound_doorbell);
1058 }
1059 break;
1060
1061 case ACB_ADAPTER_TYPE_B: {
1062 struct MessageUnit_B *reg = (struct MessageUnit_B *)acb->pmu;
1063 /*
1064 ** push inbound doorbell tell iop, driver data write ok
1065 ** and wait reply on next hwinterrupt for next Qbuffer post
1066 */
1067 writel(ARCMSR_DRV2IOP_DATA_WRITE_OK, reg->drv2iop_doorbell_reg);
1068 }
1069 break;
1070 }
1071}
1072
1073struct QBUFFER *arcmsr_get_iop_rqbuffer(struct AdapterControlBlock *acb)
1074{
1075 static struct QBUFFER *qbuffer;
1076
1077 switch (acb->adapter_type) {
1078
1079 case ACB_ADAPTER_TYPE_A: {
1080 struct MessageUnit_A __iomem *reg = (struct MessageUnit_A *)acb->pmu;
1081 qbuffer = (struct QBUFFER __iomem *) &reg->message_rbuffer;
1082 }
1083 break;
1084
1085 case ACB_ADAPTER_TYPE_B: {
1086 struct MessageUnit_B *reg = (struct MessageUnit_B *)acb->pmu;
1087 qbuffer = (struct QBUFFER __iomem *) reg->ioctl_rbuffer_reg;
1088 }
1089 break;
1090 }
1091 return qbuffer;
1092}
1093
1094static struct QBUFFER *arcmsr_get_iop_wqbuffer(struct AdapterControlBlock *acb)
1095{
1096 static struct QBUFFER *pqbuffer;
1097
1098 switch (acb->adapter_type) {
1099
1100 case ACB_ADAPTER_TYPE_A: {
1101 struct MessageUnit_A __iomem *reg = (struct MessageUnit_A *)acb->pmu;
1102 pqbuffer = (struct QBUFFER *) &reg->message_wbuffer;
1103 }
1104 break;
1105
1106 case ACB_ADAPTER_TYPE_B: {
1107 struct MessageUnit_B *reg = (struct MessageUnit_B *)acb->pmu;
1108 pqbuffer = (struct QBUFFER __iomem *)reg->ioctl_wbuffer_reg;
1109 }
1110 break;
1111 }
1112 return pqbuffer;
1113}
1114
1115static void arcmsr_iop2drv_data_wrote_handle(struct AdapterControlBlock *acb)
1116{
1117 struct QBUFFER *prbuffer;
1118 struct QBUFFER *pQbuffer;
1119 uint8_t *iop_data;
1120 int32_t my_empty_len, iop_len, rqbuf_firstindex, rqbuf_lastindex;
1121
1122 rqbuf_lastindex = acb->rqbuf_lastindex;
1123 rqbuf_firstindex = acb->rqbuf_firstindex;
1124 prbuffer = arcmsr_get_iop_rqbuffer(acb);
1125 iop_data = (uint8_t *)prbuffer->data;
1126 iop_len = prbuffer->data_len;
1127 my_empty_len = (rqbuf_firstindex - rqbuf_lastindex -1)&(ARCMSR_MAX_QBUFFER -1);
1128
1129 if (my_empty_len >= iop_len)
1130 {
1131 while (iop_len > 0) {
1132 pQbuffer = (struct QBUFFER *)&acb->rqbuffer[rqbuf_lastindex];
1133 memcpy(pQbuffer, iop_data,1);
1134 rqbuf_lastindex++;
1135 rqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
1136 iop_data++;
1137 iop_len--;
1138 }
1139 acb->rqbuf_lastindex = rqbuf_lastindex;
1140 arcmsr_iop_message_read(acb);
1141 }
1142
1143 else {
1144 acb->acb_flags |= ACB_F_IOPDATA_OVERFLOW;
1145 }
1146}
1147
1148static void arcmsr_iop2drv_data_read_handle(struct AdapterControlBlock *acb)
1149{
1150 acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_READED;
1151 if (acb->wqbuf_firstindex != acb->wqbuf_lastindex) {
1152 uint8_t *pQbuffer;
1153 struct QBUFFER *pwbuffer;
1154 uint8_t *iop_data;
1155 int32_t allxfer_len = 0;
1156
1157 acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED);
1158 pwbuffer = arcmsr_get_iop_wqbuffer(acb);
1159 iop_data = (uint8_t __iomem *)pwbuffer->data;
1160
1161 while ((acb->wqbuf_firstindex != acb->wqbuf_lastindex) && \
1162 (allxfer_len < 124)) {
1163 pQbuffer = &acb->wqbuffer[acb->wqbuf_firstindex];
1164 memcpy(iop_data, pQbuffer, 1);
1165 acb->wqbuf_firstindex++;
1166 acb->wqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
1167 iop_data++;
1168 allxfer_len++;
1169 }
1170 pwbuffer->data_len = allxfer_len;
1171
1172 arcmsr_iop_message_wrote(acb);
1173 }
1174
1175 if (acb->wqbuf_firstindex == acb->wqbuf_lastindex) {
1176 acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_CLEARED;
1177 }
1178}
1179
1180static void arcmsr_hba_doorbell_isr(struct AdapterControlBlock *acb)
1181{
1182 uint32_t outbound_doorbell;
1183 struct MessageUnit_A __iomem *reg = (struct MessageUnit_A *)acb->pmu;
1184
1185 outbound_doorbell = readl(&reg->outbound_doorbell);
1186 writel(outbound_doorbell, &reg->outbound_doorbell);
1187 if (outbound_doorbell & ARCMSR_OUTBOUND_IOP331_DATA_WRITE_OK) {
1188 arcmsr_iop2drv_data_wrote_handle(acb);
1189 }
1190
1191 if (outbound_doorbell & ARCMSR_OUTBOUND_IOP331_DATA_READ_OK) {
1192 arcmsr_iop2drv_data_read_handle(acb);
1193 }
1194}
1195
1196static void arcmsr_hba_postqueue_isr(struct AdapterControlBlock *acb)
1197{
1198 uint32_t flag_ccb;
1199 struct MessageUnit_A __iomem *reg = (struct MessageUnit_A *)acb->pmu;
1200
1201 while ((flag_ccb = readl(&reg->outbound_queueport)) != 0xFFFFFFFF) {
1202 arcmsr_drain_donequeue(acb, flag_ccb);
1203 }
1204}
1205
1206static void arcmsr_hbb_postqueue_isr(struct AdapterControlBlock *acb)
1207{
1208 uint32_t index;
1209 uint32_t flag_ccb;
1210 struct MessageUnit_B *reg = (struct MessageUnit_B *)acb->pmu;
1211
1212 index = reg->doneq_index;
1213
1214 while ((flag_ccb = readl(&reg->done_qbuffer[index])) != 0) {
1215 writel(0, &reg->done_qbuffer[index]);
1216 arcmsr_drain_donequeue(acb, flag_ccb);
1217 index++;
1218 index %= ARCMSR_MAX_HBB_POSTQUEUE;
1219 reg->doneq_index = index;
1220 }
1221}
1222
1223static int arcmsr_handle_hba_isr(struct AdapterControlBlock *acb)
1224{
1225 uint32_t outbound_intstatus;
1226 struct MessageUnit_A __iomem *reg = (struct MessageUnit_A *)acb->pmu;
1227
1228 outbound_intstatus = readl(&reg->outbound_intstatus) & \
1229 acb->outbound_int_enable;
1230 if (!(outbound_intstatus & ARCMSR_MU_OUTBOUND_HANDLE_INT)) {
1231 return 1;
1232 }
1233 writel(outbound_intstatus, &reg->outbound_intstatus);
1234 if (outbound_intstatus & ARCMSR_MU_OUTBOUND_DOORBELL_INT) {
1235 arcmsr_hba_doorbell_isr(acb);
1236 }
1237 if (outbound_intstatus & ARCMSR_MU_OUTBOUND_POSTQUEUE_INT) {
1238 arcmsr_hba_postqueue_isr(acb);
1239 }
1240 return 0;
1241}
1242
1243static int arcmsr_handle_hbb_isr(struct AdapterControlBlock *acb)
1244{
1245 uint32_t outbound_doorbell;
1246 struct MessageUnit_B *reg = (struct MessageUnit_B *)acb->pmu;
1247
1248 outbound_doorbell = readl(reg->iop2drv_doorbell_reg) & \
1249 acb->outbound_int_enable;
1250 if (!outbound_doorbell)
1251 return 1;
1252
1253 writel(~outbound_doorbell, reg->iop2drv_doorbell_reg);
1254
1255 if (outbound_doorbell & ARCMSR_IOP2DRV_DATA_WRITE_OK) {
1256 arcmsr_iop2drv_data_wrote_handle(acb);
1257 }
1258 if (outbound_doorbell & ARCMSR_IOP2DRV_DATA_READ_OK) {
1259 arcmsr_iop2drv_data_read_handle(acb);
1260 }
1261 if (outbound_doorbell & ARCMSR_IOP2DRV_CDB_DONE) {
1262 arcmsr_hbb_postqueue_isr(acb);
1263 }
1264
1265 return 0;
1266}
1267
1268static irqreturn_t arcmsr_interrupt(struct AdapterControlBlock *acb)
1269{
1270 switch (acb->adapter_type) {
1271 case ACB_ADAPTER_TYPE_A: {
1272 if (arcmsr_handle_hba_isr(acb)) {
1273 return IRQ_NONE;
1274 }
1275 }
1276 break;
1277
1278 case ACB_ADAPTER_TYPE_B: {
1279 if (arcmsr_handle_hbb_isr(acb)) {
1280 return IRQ_NONE;
1281 }
1282 }
1283 break;
1c57e86d 1284 }
1c57e86d
EC		 1285 return IRQ_HANDLED;
1286}
1287
1288static void arcmsr_iop_parking(struct AdapterControlBlock *acb)
1289{
1290 if (acb) {
1291 /* stop adapter background rebuild */
1292 if (acb->acb_flags & ACB_F_MSG_START_BGRB) {
1a4f550a 1293 uint32_t intmask_org;
1c57e86d 1294 acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
1a4f550a 1295 intmask_org = arcmsr_disable_outbound_ints(acb);
1c57e86d
EC		 1296 arcmsr_stop_adapter_bgrb(acb);
1297 arcmsr_flush_adapter_cache(acb);
1a4f550a
NC		 1298 arcmsr_enable_outbound_ints(acb, intmask_org);
1299 }
1300 }
1301}
1302
1303void arcmsr_post_ioctldata2iop(struct AdapterControlBlock *acb)
1304{
1305 int32_t wqbuf_firstindex, wqbuf_lastindex;
1306 uint8_t *pQbuffer;
1307 struct QBUFFER *pwbuffer;
1308 uint8_t *iop_data;
1309 int32_t allxfer_len = 0;
1310
1311 pwbuffer = arcmsr_get_iop_wqbuffer(acb);
1312 iop_data = (uint8_t __iomem *)pwbuffer->data;
1313 if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_READED) {
1314 acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED);
1315 wqbuf_firstindex = acb->wqbuf_firstindex;
1316 wqbuf_lastindex = acb->wqbuf_lastindex;
1317 while ((wqbuf_firstindex != wqbuf_lastindex) && (allxfer_len < 124)) {
1318 pQbuffer = &acb->wqbuffer[wqbuf_firstindex];
1319 memcpy(iop_data, pQbuffer, 1);
1320 wqbuf_firstindex++;
1321 wqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
1322 iop_data++;
1323 allxfer_len++;
1c57e86d 1324 }
1a4f550a
NC		 1325 acb->wqbuf_firstindex = wqbuf_firstindex;
1326 pwbuffer->data_len = allxfer_len;
1327 arcmsr_iop_message_wrote(acb);
1c57e86d
EC		 1328 }
1329}
1330
1a4f550a
NC		 1331static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb, \
1332 struct scsi_cmnd *cmd)
1c57e86d 1333{
1c57e86d
EC		 1334 struct CMD_MESSAGE_FIELD *pcmdmessagefld;
1335 int retvalue = 0, transfer_len = 0;
1336 char *buffer;
deff2627 1337 struct scatterlist *sg;
1c57e86d
EC		 1338 uint32_t controlcode = (uint32_t ) cmd->cmnd[5] << 24 |
1339 (uint32_t ) cmd->cmnd[6] << 16 |
1340 (uint32_t ) cmd->cmnd[7] << 8 |
1341 (uint32_t ) cmd->cmnd[8];
1a4f550a 1342 /* 4 bytes: Areca io control code */
1c57e86d 1343
deff2627
FT		 1344 sg = scsi_sglist(cmd);
1345 buffer = kmap_atomic(sg->page, KM_IRQ0) + sg->offset;
1346 if (scsi_sg_count(cmd) > 1) {
1347 retvalue = ARCMSR_MESSAGE_FAIL;
1348 goto message_out;
1c57e86d 1349 }
deff2627
FT		 1350 transfer_len += sg->length;
1351
1c57e86d
EC		 1352 if (transfer_len > sizeof(struct CMD_MESSAGE_FIELD)) {
1353 retvalue = ARCMSR_MESSAGE_FAIL;
1354 goto message_out;
1355 }
1356 pcmdmessagefld = (struct CMD_MESSAGE_FIELD *) buffer;
1357 switch(controlcode) {
1a4f550a 1358
1c57e86d 1359 case ARCMSR_MESSAGE_READ_RQBUFFER: {
1a4f550a
NC		 1360 unsigned long *ver_addr;
1361 dma_addr_t buf_handle;
1362 uint8_t *pQbuffer, *ptmpQbuffer;
1363 int32_t allxfer_len = 0;
1364
1365 ver_addr = pci_alloc_consistent(acb->pdev, 1032, &buf_handle);
1366 if (!ver_addr) {
1367 retvalue = ARCMSR_MESSAGE_FAIL;
1368 goto message_out;
1369 }
1370 ptmpQbuffer = (uint8_t *) ver_addr;
1371 while ((acb->rqbuf_firstindex != acb->rqbuf_lastindex)
1372 && (allxfer_len < 1031)) {
1373 pQbuffer = &acb->rqbuffer[acb->rqbuf_firstindex];
1374 memcpy(ptmpQbuffer, pQbuffer, 1);
1375 acb->rqbuf_firstindex++;
1376 acb->rqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
1377 ptmpQbuffer++;
1378 allxfer_len++;
1379 }
1380 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
1c57e86d 1381
1a4f550a
NC		 1382 struct QBUFFER *prbuffer;
1383 uint8_t *iop_data;
1384 int32_t iop_len;
1385
1386 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
1387 prbuffer = arcmsr_get_iop_rqbuffer(acb);
1388 iop_data = (uint8_t *)prbuffer->data;
1389 iop_len = readl(&prbuffer->data_len);
1390 while (iop_len > 0) {
1391 acb->rqbuffer[acb->rqbuf_lastindex] = readb(iop_data);
1392 acb->rqbuf_lastindex++;
1393 acb->rqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
1394 iop_data++;
1395 iop_len--;
1c57e86d 1396 }
1a4f550a
NC		 1397 arcmsr_iop_message_read(acb);
1398 }
1399 memcpy(pcmdmessagefld->messagedatabuffer, (uint8_t *)ver_addr, allxfer_len);
1400 pcmdmessagefld->cmdmessage.Length = allxfer_len;
1401 pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK;
1402 pci_free_consistent(acb->pdev, 1032, ver_addr, buf_handle);
1c57e86d
EC		 1403 }
1404 break;
1c57e86d 1405
1a4f550a
NC		 1406 case ARCMSR_MESSAGE_WRITE_WQBUFFER: {
1407 unsigned long *ver_addr;
1408 dma_addr_t buf_handle;
1409 int32_t my_empty_len, user_len, wqbuf_firstindex, wqbuf_lastindex;
1410 uint8_t *pQbuffer, *ptmpuserbuffer;
1411
1412 ver_addr = pci_alloc_consistent(acb->pdev, 1032, &buf_handle);
1413 if (!ver_addr) {
1414 retvalue = ARCMSR_MESSAGE_FAIL;
1415 goto message_out;
1416 }
1417 ptmpuserbuffer = (uint8_t *)ver_addr;
1418 user_len = pcmdmessagefld->cmdmessage.Length;
1419 memcpy(ptmpuserbuffer, pcmdmessagefld->messagedatabuffer, user_len);
1420 wqbuf_lastindex = acb->wqbuf_lastindex;
1421 wqbuf_firstindex = acb->wqbuf_firstindex;
1422 if (wqbuf_lastindex != wqbuf_firstindex) {
1423 struct SENSE_DATA *sensebuffer =
1424 (struct SENSE_DATA *)cmd->sense_buffer;
1425 arcmsr_post_ioctldata2iop(acb);
1426 /* has error report sensedata */
1427 sensebuffer->ErrorCode = 0x70;
1428 sensebuffer->SenseKey = ILLEGAL_REQUEST;
1429 sensebuffer->AdditionalSenseLength = 0x0A;
1430 sensebuffer->AdditionalSenseCode = 0x20;
1431 sensebuffer->Valid = 1;
1432 retvalue = ARCMSR_MESSAGE_FAIL;
1433 } else {
1434 my_empty_len = (wqbuf_firstindex-wqbuf_lastindex - 1)
1435 &(ARCMSR_MAX_QBUFFER - 1);
1436 if (my_empty_len >= user_len) {
1437 while (user_len > 0) {
1438 pQbuffer =
1439 &acb->wqbuffer[acb->wqbuf_lastindex];
1440 memcpy(pQbuffer, ptmpuserbuffer, 1);
1441 acb->wqbuf_lastindex++;
1442 acb->wqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
1443 ptmpuserbuffer++;
1444 user_len--;
1445 }
1446 if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_CLEARED) {
1447 acb->acb_flags &=
1448 ~ACB_F_MESSAGE_WQBUFFER_CLEARED;
1449 arcmsr_post_ioctldata2iop(acb);
1450 }
1451 } else {
1452 /* has error report sensedata */
1c57e86d
EC		 1453 struct SENSE_DATA *sensebuffer =
1454 (struct SENSE_DATA *)cmd->sense_buffer;
1c57e86d
EC		 1455 sensebuffer->ErrorCode = 0x70;
1456 sensebuffer->SenseKey = ILLEGAL_REQUEST;
1457 sensebuffer->AdditionalSenseLength = 0x0A;
1458 sensebuffer->AdditionalSenseCode = 0x20;
1459 sensebuffer->Valid = 1;
1460 retvalue = ARCMSR_MESSAGE_FAIL;
1a4f550a 1461 }
1c57e86d
EC		 1462 }
1463 pci_free_consistent(acb->pdev, 1032, ver_addr, buf_handle);
1464 }
1465 break;
1a4f550a 1466
1c57e86d 1467 case ARCMSR_MESSAGE_CLEAR_RQBUFFER: {
1a4f550a 1468 uint8_t *pQbuffer = acb->rqbuffer;
1c57e86d 1469
1a4f550a
NC		 1470 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
1471 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
1472 arcmsr_iop_message_read(acb);
1473 }
1474 acb->acb_flags |= ACB_F_MESSAGE_RQBUFFER_CLEARED;
1475 acb->rqbuf_firstindex = 0;
1476 acb->rqbuf_lastindex = 0;
1477 memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER);
1478 pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK;
1c57e86d
EC		 1479 }
1480 break;
1a4f550a 1481
1c57e86d 1482 case ARCMSR_MESSAGE_CLEAR_WQBUFFER: {
1a4f550a 1483 uint8_t *pQbuffer = acb->wqbuffer;
1c57e86d 1484
1a4f550a
NC		 1485 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
1486 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
1487 arcmsr_iop_message_read(acb);
1488 }
1489 acb->acb_flags |=
1490 (ACB_F_MESSAGE_WQBUFFER_CLEARED |
1491 ACB_F_MESSAGE_WQBUFFER_READED);
1492 acb->wqbuf_firstindex = 0;
1493 acb->wqbuf_lastindex = 0;
1494 memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER);
1495 pcmdmessagefld->cmdmessage.ReturnCode =
1496 ARCMSR_MESSAGE_RETURNCODE_OK;
1c57e86d
EC		 1497 }
1498 break;
1a4f550a 1499
1c57e86d 1500 case ARCMSR_MESSAGE_CLEAR_ALLQBUFFER: {
1a4f550a 1501 uint8_t *pQbuffer;
1c57e86d 1502
1a4f550a
NC		 1503 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
1504 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
1505 arcmsr_iop_message_read(acb);
1506 }
1507 acb->acb_flags |=
1508 (ACB_F_MESSAGE_WQBUFFER_CLEARED
1509 | ACB_F_MESSAGE_RQBUFFER_CLEARED
1510 | ACB_F_MESSAGE_WQBUFFER_READED);
1511 acb->rqbuf_firstindex = 0;
1512 acb->rqbuf_lastindex = 0;
1513 acb->wqbuf_firstindex = 0;
1514 acb->wqbuf_lastindex = 0;
1515 pQbuffer = acb->rqbuffer;
1516 memset(pQbuffer, 0, sizeof(struct QBUFFER));
1517 pQbuffer = acb->wqbuffer;
1518 memset(pQbuffer, 0, sizeof(struct QBUFFER));
1519 pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK;
1c57e86d
EC		 1520 }
1521 break;
1a4f550a 1522
1c57e86d 1523 case ARCMSR_MESSAGE_RETURN_CODE_3F: {
1a4f550a 1524 pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_3F;
1c57e86d
EC		 1525 }
1526 break;
1a4f550a 1527
1c57e86d 1528 case ARCMSR_MESSAGE_SAY_HELLO: {
1a4f550a 1529 int8_t *hello_string = "Hello! I am ARCMSR";
1c57e86d 1530
1a4f550a
NC		 1531 memcpy(pcmdmessagefld->messagedatabuffer, hello_string
1532 , (int16_t)strlen(hello_string));
1533 pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK;
1c57e86d
EC		 1534 }
1535 break;
1a4f550a 1536
1c57e86d
EC		 1537 case ARCMSR_MESSAGE_SAY_GOODBYE:
1538 arcmsr_iop_parking(acb);
1539 break;
1a4f550a 1540
1c57e86d
EC		 1541 case ARCMSR_MESSAGE_FLUSH_ADAPTER_CACHE:
1542 arcmsr_flush_adapter_cache(acb);
1543 break;
1a4f550a 1544
1c57e86d
EC		 1545 default:
1546 retvalue = ARCMSR_MESSAGE_FAIL;
1547 }
1a4f550a 1548 message_out:
deff2627
FT		 1549 sg = scsi_sglist(cmd);
1550 kunmap_atomic(buffer - sg->offset, KM_IRQ0);
1c57e86d
EC		 1551 return retvalue;
1552}
1553
1554static struct CommandControlBlock *arcmsr_get_freeccb(struct AdapterControlBlock *acb)
1555{
1556 struct list_head *head = &acb->ccb_free_list;
1557 struct CommandControlBlock *ccb = NULL;
1558
1559 if (!list_empty(head)) {
1560 ccb = list_entry(head->next, struct CommandControlBlock, list);
1561 list_del(head->next);
1562 }
1563 return ccb;
1564}
1565
1566static void arcmsr_handle_virtual_command(struct AdapterControlBlock *acb,
1567 struct scsi_cmnd *cmd)
1568{
1569 switch (cmd->cmnd[0]) {
1570 case INQUIRY: {
1571 unsigned char inqdata[36];
1572 char *buffer;
deff2627 1573 struct scatterlist *sg;
1c57e86d
EC		 1574
1575 if (cmd->device->lun) {
1576 cmd->result = (DID_TIME_OUT << 16);
1577 cmd->scsi_done(cmd);
1578 return;
1579 }
1580 inqdata[0] = TYPE_PROCESSOR;
1581 /* Periph Qualifier & Periph Dev Type */
1582 inqdata[1] = 0;
1583 /* rem media bit & Dev Type Modifier */
1584 inqdata[2] = 0;
a1f6e021 1585 /* ISO, ECMA, & ANSI versions */
1c57e86d
EC		 1586 inqdata[4] = 31;
1587 /* length of additional data */
1588 strncpy(&inqdata[8], "Areca ", 8);
1589 /* Vendor Identification */
1590 strncpy(&inqdata[16], "RAID controller ", 16);
1591 /* Product Identification */
1592 strncpy(&inqdata[32], "R001", 4); /* Product Revision */
1c57e86d 1593
deff2627
FT		 1594 sg = scsi_sglist(cmd);
1595 buffer = kmap_atomic(sg->page, KM_IRQ0) + sg->offset;
1596
1c57e86d 1597 memcpy(buffer, inqdata, sizeof(inqdata));
deff2627
FT		 1598 sg = scsi_sglist(cmd);
1599 kunmap_atomic(buffer - sg->offset, KM_IRQ0);
1c57e86d 1600
1c57e86d
EC		 1601 cmd->scsi_done(cmd);
1602 }
1603 break;
1604 case WRITE_BUFFER:
1605 case READ_BUFFER: {
1606 if (arcmsr_iop_message_xfer(acb, cmd))
1607 cmd->result = (DID_ERROR << 16);
1608 cmd->scsi_done(cmd);
1609 }
1610 break;
1611 default:
1612 cmd->scsi_done(cmd);
1613 }
1614}
1615
1616static int arcmsr_queue_command(struct scsi_cmnd *cmd,
1617 void (* done)(struct scsi_cmnd *))
1618{
1619 struct Scsi_Host *host = cmd->device->host;
1a4f550a 1620 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
1c57e86d
EC		 1621 struct CommandControlBlock *ccb;
1622 int target = cmd->device->id;
1623 int lun = cmd->device->lun;
1624
1625 cmd->scsi_done = done;
1626 cmd->host_scribble = NULL;
1627 cmd->result = 0;
1628 if (acb->acb_flags & ACB_F_BUS_RESET) {
1629 printk(KERN_NOTICE "arcmsr%d: bus reset"
1630 " and return busy \n"
1631 , acb->host->host_no);
1632 return SCSI_MLQUEUE_HOST_BUSY;
1633 }
a1f6e021 1634 if (target == 16) {
1c57e86d
EC		 1635 /* virtual device for iop message transfer */
1636 arcmsr_handle_virtual_command(acb, cmd);
1637 return 0;
1638 }
1639 if (acb->devstate[target][lun] == ARECA_RAID_GONE) {
1640 uint8_t block_cmd;
1641
1642 block_cmd = cmd->cmnd[0] & 0x0f;
1643 if (block_cmd == 0x08 || block_cmd == 0x0a) {
1644 printk(KERN_NOTICE
1645 "arcmsr%d: block 'read/write'"
1646 "command with gone raid volume"
a1f6e021 1647 " Cmd = %2x, TargetId = %d, Lun = %d \n"
1c57e86d
EC		 1648 , acb->host->host_no
1649 , cmd->cmnd[0]
1650 , target, lun);
1651 cmd->result = (DID_NO_CONNECT << 16);
1652 cmd->scsi_done(cmd);
1653 return 0;
1654 }
1655 }
1656 if (atomic_read(&acb->ccboutstandingcount) >=
1657 ARCMSR_MAX_OUTSTANDING_CMD)
1658 return SCSI_MLQUEUE_HOST_BUSY;
1659
1660 ccb = arcmsr_get_freeccb(acb);
1661 if (!ccb)
1662 return SCSI_MLQUEUE_HOST_BUSY;
1a4f550a 1663
1c57e86d
EC		 1664 arcmsr_build_ccb(acb, ccb, cmd);
1665 arcmsr_post_ccb(acb, ccb);
1666 return 0;
1667}
1668
1a4f550a 1669static void arcmsr_get_hba_config(struct AdapterControlBlock *acb)
1c57e86d 1670{
1a4f550a 1671 struct MessageUnit_A __iomem *reg = (struct MessageUnit_A *)acb->pmu;
1c57e86d
EC		 1672 char *acb_firm_model = acb->firm_model;
1673 char *acb_firm_version = acb->firm_version;
1a4f550a
NC		 1674 char *iop_firm_model = (char *) (&reg->message_rwbuffer[15]);
1675 char *iop_firm_version = (char *) (&reg->message_rwbuffer[17]);
1c57e86d
EC		 1676 int count;
1677
1678 writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
1a4f550a
NC		 1679 if (arcmsr_hba_wait_msgint_ready(acb)) {
1680 printk(KERN_NOTICE "arcmsr%d: wait 'get adapter firmware \
1681 miscellaneous data' timeout \n", acb->host->host_no);
1682 }
1683
1c57e86d
EC		 1684 count = 8;
1685 while (count) {
1686 *acb_firm_model = readb(iop_firm_model);
1687 acb_firm_model++;
1688 iop_firm_model++;
1689 count--;
1690 }
1a4f550a 1691
1c57e86d
EC		 1692 count = 16;
1693 while (count) {
1694 *acb_firm_version = readb(iop_firm_version);
1695 acb_firm_version++;
1696 iop_firm_version++;
1697 count--;
1698 }
1a4f550a
NC		 1699
1700 printk(KERN_INFO "ARECA RAID ADAPTER%d: FIRMWARE VERSION %s \n"
1c57e86d
EC		 1701 , acb->host->host_no
1702 , acb->firm_version);
1a4f550a 1703
1c57e86d
EC		 1704 acb->firm_request_len = readl(&reg->message_rwbuffer[1]);
1705 acb->firm_numbers_queue = readl(&reg->message_rwbuffer[2]);
1706 acb->firm_sdram_size = readl(&reg->message_rwbuffer[3]);
1707 acb->firm_hd_channels = readl(&reg->message_rwbuffer[4]);
1708}
1709
1a4f550a
NC		 1710static void arcmsr_get_hbb_config(struct AdapterControlBlock *acb)
1711{
1712 struct MessageUnit_B *reg = (struct MessageUnit_B *)acb->pmu;
1713 uint32_t *lrwbuffer = reg->msgcode_rwbuffer_reg;
1714 char *acb_firm_model = acb->firm_model;
1715 char *acb_firm_version = acb->firm_version;
1716 char *iop_firm_model = (char *) (&lrwbuffer[15]);
1717 /*firm_model,15,60-67*/
1718 char *iop_firm_version = (char *) (&lrwbuffer[17]);
1719 /*firm_version,17,68-83*/
1720 int count;
1721
1722 writel(ARCMSR_MESSAGE_GET_CONFIG, reg->drv2iop_doorbell_reg);
1723 if (arcmsr_hbb_wait_msgint_ready(acb)) {
1724 printk(KERN_NOTICE "arcmsr%d: wait 'get adapter firmware \
1725 miscellaneous data' timeout \n", acb->host->host_no);
1726 }
1727
1728 count = 8;
1729 while (count)
1730 {
1731 *acb_firm_model = readb(iop_firm_model);
1732 acb_firm_model++;
1733 iop_firm_model++;
1734 count--;
1735 }
1736
1737 count = 16;
1738 while (count)
1739 {
1740 *acb_firm_version = readb(iop_firm_version);
1741 acb_firm_version++;
1742 iop_firm_version++;
1743 count--;
1744 }
1745
1746 printk(KERN_INFO "ARECA RAID ADAPTER%d: FIRMWARE VERSION %s \n",
1747 acb->host->host_no,
1748 acb->firm_version);
1749
1750 lrwbuffer++;
1751 acb->firm_request_len = readl(lrwbuffer++);
1752 /*firm_request_len,1,04-07*/
1753 acb->firm_numbers_queue = readl(lrwbuffer++);
1754 /*firm_numbers_queue,2,08-11*/
1755 acb->firm_sdram_size = readl(lrwbuffer++);
1756 /*firm_sdram_size,3,12-15*/
1757 acb->firm_hd_channels = readl(lrwbuffer);
1758 /*firm_ide_channels,4,16-19*/
1759}
1760
1761static void arcmsr_get_firmware_spec(struct AdapterControlBlock *acb)
1762{
1763 switch (acb->adapter_type) {
1764 case ACB_ADAPTER_TYPE_A: {
1765 arcmsr_get_hba_config(acb);
1766 }
1767 break;
1768
1769 case ACB_ADAPTER_TYPE_B: {
1770 arcmsr_get_hbb_config(acb);
1771 }
1772 break;
1773 }
1774}
1775
1776static void arcmsr_polling_hba_ccbdone(struct AdapterControlBlock *acb,
1c57e86d
EC		 1777 struct CommandControlBlock *poll_ccb)
1778{
1a4f550a 1779 struct MessageUnit_A __iomem *reg = (struct MessageUnit_A *)acb->pmu;
1c57e86d
EC		 1780 struct CommandControlBlock *ccb;
1781 uint32_t flag_ccb, outbound_intstatus, poll_ccb_done = 0, poll_count = 0;
1c57e86d 1782
1a4f550a 1783 polling_hba_ccb_retry:
1c57e86d 1784 poll_count++;
1a4f550a 1785 outbound_intstatus = readl(&reg->outbound_intstatus) & acb->outbound_int_enable;
1c57e86d
EC		 1786 writel(outbound_intstatus, &reg->outbound_intstatus);/*clear interrupt*/
1787 while (1) {
1788 if ((flag_ccb = readl(&reg->outbound_queueport)) == 0xFFFFFFFF) {
1789 if (poll_ccb_done)
1790 break;
1791 else {
1792 msleep(25);
1793 if (poll_count > 100)
1794 break;
1a4f550a 1795 goto polling_hba_ccb_retry;
1c57e86d
EC		 1796 }
1797 }
1a4f550a
NC		 1798 ccb = (struct CommandControlBlock *)(acb->vir2phy_offset + (flag_ccb << 5));
1799 poll_ccb_done = (ccb == poll_ccb) ? 1:0;
1800 if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) {
1801 if ((ccb->startdone == ARCMSR_CCB_ABORTED) || (ccb == poll_ccb)) {
1802 printk(KERN_NOTICE "arcmsr%d: scsi id = %d lun = %d ccb = '0x%p'"
1c57e86d
EC		 1803 " poll command abort successfully \n"
1804 , acb->host->host_no
1805 , ccb->pcmd->device->id
1806 , ccb->pcmd->device->lun
1807 , ccb);
1808 ccb->pcmd->result = DID_ABORT << 16;
1809 arcmsr_ccb_complete(ccb, 1);
1810 poll_ccb_done = 1;
1811 continue;
1812 }
1a4f550a
NC		 1813 printk(KERN_NOTICE "arcmsr%d: polling get an illegal ccb"
1814 " command done ccb = '0x%p'"
a1f6e021 1815 "ccboutstandingcount = %d \n"
1c57e86d
EC		 1816 , acb->host->host_no
1817 , ccb
1818 , atomic_read(&acb->ccboutstandingcount));
1819 continue;
1820 }
1a4f550a
NC		 1821 arcmsr_report_ccb_state(acb, ccb, flag_ccb);
1822 }
1823}
1824
1825static void arcmsr_polling_hbb_ccbdone(struct AdapterControlBlock *acb, \
1826 struct CommandControlBlock *poll_ccb)
1827{
1828 struct MessageUnit_B *reg = (struct MessageUnit_B *)acb->pmu;
1829 struct CommandControlBlock *ccb;
1830 uint32_t flag_ccb, poll_ccb_done = 0, poll_count = 0;
1831 int index;
1832
1833 polling_hbb_ccb_retry:
1834 poll_count++;
1835 /* clear doorbell interrupt */
1836 writel(ARCMSR_DOORBELL_INT_CLEAR_PATTERN, reg->iop2drv_doorbell_reg);
1837 while (1) {
1838 index = reg->doneq_index;
1839 if ((flag_ccb = readl(&reg->done_qbuffer[index])) == 0) {
1840 if (poll_ccb_done)
1841 break;
1842 else {
1843 msleep(25);
1844 if (poll_count > 100)
1845 break;
1846 goto polling_hbb_ccb_retry;
1c57e86d 1847 }
1a4f550a
NC		 1848 }
1849 writel(0, &reg->done_qbuffer[index]);
1850 index++;
1851 /*if last index number set it to 0 */
1852 index %= ARCMSR_MAX_HBB_POSTQUEUE;
1853 reg->doneq_index = index;
1854 /* check ifcommand done with no error*/
1855 ccb = (struct CommandControlBlock *)\
1856 (acb->vir2phy_offset + (flag_ccb << 5));/*frame must be 32 bytes aligned*/
1857 poll_ccb_done = (ccb == poll_ccb) ? 1:0;
1858 if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) {
1859 if (ccb->startdone == ARCMSR_CCB_ABORTED) {
1860 printk(KERN_NOTICE "arcmsr%d: \
1861 scsi id = %d lun = %d ccb = '0x%p' poll command abort successfully \n"
1862 ,acb->host->host_no
1863 ,ccb->pcmd->device->id
1864 ,ccb->pcmd->device->lun
1865 ,ccb);
1866 ccb->pcmd->result = DID_ABORT << 16;
1c57e86d 1867 arcmsr_ccb_complete(ccb, 1);
1a4f550a 1868 continue;
1c57e86d 1869 }
1a4f550a
NC		 1870 printk(KERN_NOTICE "arcmsr%d: polling get an illegal ccb"
1871 " command done ccb = '0x%p'"
1872 "ccboutstandingcount = %d \n"
1c57e86d 1873 , acb->host->host_no
1a4f550a
NC		 1874 , ccb
1875 , atomic_read(&acb->ccboutstandingcount));
1876 continue;
1c57e86d 1877 }
1a4f550a
NC		 1878 arcmsr_report_ccb_state(acb, ccb, flag_ccb);
1879 } /*drain reply FIFO*/
1880}
1881
1882static void arcmsr_polling_ccbdone(struct AdapterControlBlock *acb, \
1883 struct CommandControlBlock *poll_ccb)
1884{
1885 switch (acb->adapter_type) {
1886
1887 case ACB_ADAPTER_TYPE_A: {
1888 arcmsr_polling_hba_ccbdone(acb,poll_ccb);
1889 }
1890 break;
1891
1892 case ACB_ADAPTER_TYPE_B: {
1893 arcmsr_polling_hbb_ccbdone(acb,poll_ccb);
1c57e86d
EC		 1894 }
1895 }
1896}
1a4f550a
NC		 1897
1898static int arcmsr_iop_confirm(struct AdapterControlBlock *acb)
a1f6e021 1899{
1a4f550a
NC		 1900 uint32_t cdb_phyaddr, ccb_phyaddr_hi32;
1901 dma_addr_t dma_coherent_handle;
1902 /*
1903 ********************************************************************
1904 ** here we need to tell iop 331 our freeccb.HighPart
1905 ** if freeccb.HighPart is not zero
1906 ********************************************************************
1907 */
1908 dma_coherent_handle = acb->dma_coherent_handle;
1909 cdb_phyaddr = (uint32_t)(dma_coherent_handle);
1910 ccb_phyaddr_hi32 = (uint32_t)((cdb_phyaddr >> 16) >> 16);
1911 /*
1912 ***********************************************************************
1913 ** if adapter type B, set window of "post command Q"
1914 ***********************************************************************
1915 */
1916 switch (acb->adapter_type) {
1917
1918 case ACB_ADAPTER_TYPE_A: {
1919 if (ccb_phyaddr_hi32 != 0) {
1920 struct MessageUnit_A __iomem *reg = \
1921 (struct MessageUnit_A *)acb->pmu;
1922 uint32_t intmask_org;
1923 intmask_org = arcmsr_disable_outbound_ints(acb);
1924 writel(ARCMSR_SIGNATURE_SET_CONFIG, \
1925 &reg->message_rwbuffer[0]);
1926 writel(ccb_phyaddr_hi32, &reg->message_rwbuffer[1]);
1927 writel(ARCMSR_INBOUND_MESG0_SET_CONFIG, \
1928 &reg->inbound_msgaddr0);
1929 if (arcmsr_hba_wait_msgint_ready(acb)) {
1930 printk(KERN_NOTICE "arcmsr%d: ""set ccb high \
1931 part physical address timeout\n",
1932 acb->host->host_no);
1933 return 1;
a1f6e021 1934 }
1a4f550a
NC		 1935 arcmsr_enable_outbound_ints(acb, intmask_org);
1936 }
1937 }
1938 break;
a1f6e021 1939
1a4f550a
NC		 1940 case ACB_ADAPTER_TYPE_B: {
1941 unsigned long post_queue_phyaddr;
1942 uint32_t *rwbuffer;
a1f6e021 1943
1a4f550a
NC		 1944 struct MessageUnit_B *reg = (struct MessageUnit_B *)acb->pmu;
1945 uint32_t intmask_org;
1946 intmask_org = arcmsr_disable_outbound_ints(acb);
1947 reg->postq_index = 0;
1948 reg->doneq_index = 0;
1949 writel(ARCMSR_MESSAGE_SET_POST_WINDOW, reg->drv2iop_doorbell_reg);
1950 if (arcmsr_hbb_wait_msgint_ready(acb)) {
1951 printk(KERN_NOTICE "arcmsr%d:can not set diver mode\n", \
1952 acb->host->host_no);
1953 return 1;
1954 }
1955 post_queue_phyaddr = cdb_phyaddr + ARCMSR_MAX_FREECCB_NUM * \
1956 sizeof(struct CommandControlBlock) + offsetof(struct MessageUnit_B, post_qbuffer) ;
1957 rwbuffer = reg->msgcode_rwbuffer_reg;
1958 /* driver "set config" signature */
1959 writel(ARCMSR_SIGNATURE_SET_CONFIG, rwbuffer++);
1960 /* normal should be zero */
1961 writel(ccb_phyaddr_hi32, rwbuffer++);
1962 /* postQ size (256 + 8)*4 */
1963 writel(post_queue_phyaddr, rwbuffer++);
1964 /* doneQ size (256 + 8)*4 */
1965 writel(post_queue_phyaddr + 1056, rwbuffer++);
1966 /* ccb maxQ size must be --> [(256 + 8)*4]*/
1967 writel(1056, rwbuffer);
1968
1969 writel(ARCMSR_MESSAGE_SET_CONFIG, reg->drv2iop_doorbell_reg);
1970 if (arcmsr_hbb_wait_msgint_ready(acb)) {
1971 printk(KERN_NOTICE "arcmsr%d: 'set command Q window' \
1972 timeout \n",acb->host->host_no);
1973 return 1;
1974 }
a1f6e021 1975
1a4f550a
NC		 1976 writel(ARCMSR_MESSAGE_START_DRIVER_MODE, reg->drv2iop_doorbell_reg);
1977 if (arcmsr_hbb_wait_msgint_ready(acb)) {
1978 printk(KERN_NOTICE "arcmsr%d: 'can not set diver mode \n"\
1979 ,acb->host->host_no);
1980 return 1;
1981 }
1982 arcmsr_enable_outbound_ints(acb, intmask_org);
1983 }
1984 break;
1985 }
1986 return 0;
1987}
a1f6e021 1988
1a4f550a
NC		 1989static void arcmsr_wait_firmware_ready(struct AdapterControlBlock *acb)
1990{
1991 uint32_t firmware_state = 0;
a1f6e021 1992
1a4f550a
NC		 1993 switch (acb->adapter_type) {
1994
1995 case ACB_ADAPTER_TYPE_A: {
1996 struct MessageUnit_A __iomem *reg = (struct MessageUnit_A *)acb->pmu;
1997 do {
1998 firmware_state = readl(&reg->outbound_msgaddr1);
1999 } while ((firmware_state & ARCMSR_OUTBOUND_MESG1_FIRMWARE_OK) == 0);
2000 }
2001 break;
2002
2003 case ACB_ADAPTER_TYPE_B: {
2004 struct MessageUnit_B *reg = (struct MessageUnit_B *)acb->pmu;
2005 do {
2006 firmware_state = readl(reg->iop2drv_doorbell_reg);
2007 } while ((firmware_state & ARCMSR_MESSAGE_FIRMWARE_OK) == 0);
2008 }
2009 break;
a1f6e021 2010 }
1a4f550a
NC		 2011}
2012
2013static void arcmsr_start_hba_bgrb(struct AdapterControlBlock *acb)
2014{
2015 struct MessageUnit_A __iomem *reg = (struct MessageUnit_A *)acb->pmu;
2016 acb->acb_flags |= ACB_F_MSG_START_BGRB;
2017 writel(ARCMSR_INBOUND_MESG0_START_BGRB, &reg->inbound_msgaddr0);
2018 if (arcmsr_hba_wait_msgint_ready(acb)) {
2019 printk(KERN_NOTICE "arcmsr%d: wait 'start adapter background \
2020 rebulid' timeout \n", acb->host->host_no);
a1f6e021 2021 }
a1f6e021 2022}
2023
1a4f550a
NC		 2024static void arcmsr_start_hbb_bgrb(struct AdapterControlBlock *acb)
2025{
2026 struct MessageUnit_B *reg = (struct MessageUnit_B *)acb->pmu;
2027 acb->acb_flags |= ACB_F_MSG_START_BGRB;
2028 writel(ARCMSR_MESSAGE_START_BGRB, reg->drv2iop_doorbell_reg);
2029 if (arcmsr_hbb_wait_msgint_ready(acb)) {
2030 printk(KERN_NOTICE "arcmsr%d: wait 'start adapter background \
2031 rebulid' timeout \n",acb->host->host_no);
2032 }
2033}
1c57e86d 2034
1a4f550a 2035static void arcmsr_start_adapter_bgrb(struct AdapterControlBlock *acb)
1c57e86d 2036{
1a4f550a
NC		 2037 switch (acb->adapter_type) {
2038 case ACB_ADAPTER_TYPE_A:
2039 arcmsr_start_hba_bgrb(acb);
2040 break;
2041 case ACB_ADAPTER_TYPE_B:
2042 arcmsr_start_hbb_bgrb(acb);
2043 break;
2044 }
2045}
1c57e86d 2046
1a4f550a
NC		 2047static void arcmsr_clear_doorbell_queue_buffer(struct AdapterControlBlock *acb)
2048{
2049 switch (acb->adapter_type) {
2050 case ACB_ADAPTER_TYPE_A: {
2051 struct MessageUnit_A *reg = (struct MessageUnit_A *)acb->pmu;
2052 uint32_t outbound_doorbell;
2053 /* empty doorbell Qbuffer if door bell ringed */
2054 outbound_doorbell = readl(&reg->outbound_doorbell);
2055 /*clear doorbell interrupt */
2056 writel(outbound_doorbell, &reg->outbound_doorbell);
2057 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, &reg->inbound_doorbell);
2058 }
2059 break;
1c57e86d 2060
1a4f550a
NC		 2061 case ACB_ADAPTER_TYPE_B: {
2062 struct MessageUnit_B *reg = (struct MessageUnit_B *)acb->pmu;
2063 /*clear interrupt and message state*/
2064 writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN, reg->iop2drv_doorbell_reg);
2065 writel(ARCMSR_DRV2IOP_DATA_READ_OK, reg->drv2iop_doorbell_reg);
2066 /* let IOP know data has been read */
2067 }
2068 break;
1c57e86d 2069 }
1a4f550a 2070}
1c57e86d 2071
1a4f550a
NC		 2072static void arcmsr_iop_init(struct AdapterControlBlock *acb)
2073{
2074 uint32_t intmask_org;
2075
2076 arcmsr_wait_firmware_ready(acb);
2077 arcmsr_iop_confirm(acb);
2078 /* disable all outbound interrupt */
2079 intmask_org = arcmsr_disable_outbound_ints(acb);
2080 arcmsr_get_firmware_spec(acb);
2081 /*start background rebuild*/
2082 arcmsr_start_adapter_bgrb(acb);
2083 /* empty doorbell Qbuffer if door bell ringed */
2084 arcmsr_clear_doorbell_queue_buffer(acb);
2085 /* enable outbound Post Queue,outbound doorbell Interrupt */
2086 arcmsr_enable_outbound_ints(acb, intmask_org);
1c57e86d
EC		 2087 acb->acb_flags |= ACB_F_IOP_INITED;
2088}
2089
2090static void arcmsr_iop_reset(struct AdapterControlBlock *acb)
2091{
1c57e86d
EC		 2092 struct CommandControlBlock *ccb;
2093 uint32_t intmask_org;
2094 int i = 0;
2095
2096 if (atomic_read(&acb->ccboutstandingcount) != 0) {
2097 /* talk to iop 331 outstanding command aborted */
2098 arcmsr_abort_allcmd(acb);
24430458 2099
1c57e86d 2100 /* wait for 3 sec for all command aborted*/
1a4f550a 2101 ssleep(3);
24430458 2102
1c57e86d
EC		 2103 /* disable all outbound interrupt */
2104 intmask_org = arcmsr_disable_outbound_ints(acb);
2105 /* clear all outbound posted Q */
1a4f550a 2106 arcmsr_done4abort_postqueue(acb);
1c57e86d
EC		 2107 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
2108 ccb = acb->pccb_pool[i];
a1f6e021 2109 if (ccb->startdone == ARCMSR_CCB_START) {
1c57e86d 2110 ccb->startdone = ARCMSR_CCB_ABORTED;
1a4f550a 2111 arcmsr_ccb_complete(ccb, 1);
1c57e86d
EC		 2112 }
2113 }
2114 /* enable all outbound interrupt */
2115 arcmsr_enable_outbound_ints(acb, intmask_org);
2116 }
1c57e86d
EC		 2117}
2118
2119static int arcmsr_bus_reset(struct scsi_cmnd *cmd)
2120{
2121 struct AdapterControlBlock *acb =
2122 (struct AdapterControlBlock *)cmd->device->host->hostdata;
2123 int i;
2124
2125 acb->num_resets++;
2126 acb->acb_flags |= ACB_F_BUS_RESET;
2127 for (i = 0; i < 400; i++) {
2128 if (!atomic_read(&acb->ccboutstandingcount))
2129 break;
1a4f550a 2130 arcmsr_interrupt(acb);/* FIXME: need spinlock */
1c57e86d
EC		 2131 msleep(25);
2132 }
2133 arcmsr_iop_reset(acb);
2134 acb->acb_flags &= ~ACB_F_BUS_RESET;
2135 return SUCCESS;
2136}
2137
2138static void arcmsr_abort_one_cmd(struct AdapterControlBlock *acb,
2139 struct CommandControlBlock *ccb)
2140{
2141 u32 intmask;
2142
2143 ccb->startdone = ARCMSR_CCB_ABORTED;
2144
2145 /*
2146 ** Wait for 3 sec for all command done.
2147 */
1a4f550a 2148 ssleep(3);
1c57e86d
EC		 2149
2150 intmask = arcmsr_disable_outbound_ints(acb);
2151 arcmsr_polling_ccbdone(acb, ccb);
2152 arcmsr_enable_outbound_ints(acb, intmask);
2153}
2154
2155static int arcmsr_abort(struct scsi_cmnd *cmd)
2156{
2157 struct AdapterControlBlock *acb =
2158 (struct AdapterControlBlock *)cmd->device->host->hostdata;
2159 int i = 0;
2160
2161 printk(KERN_NOTICE
a1f6e021 2162 "arcmsr%d: abort device command of scsi id = %d lun = %d \n",
1c57e86d
EC		 2163 acb->host->host_no, cmd->device->id, cmd->device->lun);
2164 acb->num_aborts++;
1c57e86d
EC		 2165 /*
2166 ************************************************
2167 ** the all interrupt service routine is locked
2168 ** we need to handle it as soon as possible and exit
2169 ************************************************
2170 */
2171 if (!atomic_read(&acb->ccboutstandingcount))
2172 return SUCCESS;
2173
2174 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
2175 struct CommandControlBlock *ccb = acb->pccb_pool[i];
2176 if (ccb->startdone == ARCMSR_CCB_START && ccb->pcmd == cmd) {
2177 arcmsr_abort_one_cmd(acb, ccb);
2178 break;
2179 }
2180 }
2181
2182 return SUCCESS;
2183}
2184
2185static const char *arcmsr_info(struct Scsi_Host *host)
2186{
2187 struct AdapterControlBlock *acb =
2188 (struct AdapterControlBlock *) host->hostdata;
2189 static char buf[256];
2190 char *type;
2191 int raid6 = 1;
2192
2193 switch (acb->pdev->device) {
2194 case PCI_DEVICE_ID_ARECA_1110:
1a4f550a
NC		 2195 case PCI_DEVICE_ID_ARECA_1200:
2196 case PCI_DEVICE_ID_ARECA_1202:
1c57e86d
EC		 2197 case PCI_DEVICE_ID_ARECA_1210:
2198 raid6 = 0;
2199 /*FALLTHRU*/
2200 case PCI_DEVICE_ID_ARECA_1120:
2201 case PCI_DEVICE_ID_ARECA_1130:
2202 case PCI_DEVICE_ID_ARECA_1160:
2203 case PCI_DEVICE_ID_ARECA_1170:
1a4f550a 2204 case PCI_DEVICE_ID_ARECA_1201:
1c57e86d
EC		 2205 case PCI_DEVICE_ID_ARECA_1220:
2206 case PCI_DEVICE_ID_ARECA_1230:
2207 case PCI_DEVICE_ID_ARECA_1260:
2208 case PCI_DEVICE_ID_ARECA_1270:
2209 case PCI_DEVICE_ID_ARECA_1280:
2210 type = "SATA";
2211 break;
2212 case PCI_DEVICE_ID_ARECA_1380:
2213 case PCI_DEVICE_ID_ARECA_1381:
2214 case PCI_DEVICE_ID_ARECA_1680:
2215 case PCI_DEVICE_ID_ARECA_1681:
2216 type = "SAS";
2217 break;
2218 default:
2219 type = "X-TYPE";
2220 break;
2221 }
a1f6e021 2222 sprintf(buf, "Areca %s Host Adapter RAID Controller%s\n %s",
1c57e86d
EC		 2223 type, raid6 ? "( RAID6 capable)" : "",
2224 ARCMSR_DRIVER_VERSION);
2225 return buf;
2226}
1a4f550a 2227#ifdef CONFIG_SCSI_ARCMSR_AER
a1f6e021 2228static pci_ers_result_t arcmsr_pci_slot_reset(struct pci_dev *pdev)
2229{
1a4f550a
NC		 2230 struct Scsi_Host *host = pci_get_drvdata(pdev);
2231 struct AdapterControlBlock *acb =
2232 (struct AdapterControlBlock *) host->hostdata;
2233 uint32_t intmask_org;
2234 int i, j;
a1f6e021 2235
1a4f550a 2236 if (pci_enable_device(pdev)) {
a1f6e021 2237 return PCI_ERS_RESULT_DISCONNECT;
2238 }
1a4f550a
NC		 2239 pci_set_master(pdev);
2240 intmask_org = arcmsr_disable_outbound_ints(acb);
a1f6e021 2241 acb->acb_flags |= (ACB_F_MESSAGE_WQBUFFER_CLEARED |
2242 ACB_F_MESSAGE_RQBUFFER_CLEARED |
2243 ACB_F_MESSAGE_WQBUFFER_READED);
2244 acb->acb_flags &= ~ACB_F_SCSISTOPADAPTER;
1a4f550a
NC		 2245 for (i = 0; i < ARCMSR_MAX_TARGETID; i++)
2246 for (j = 0; j < ARCMSR_MAX_TARGETLUN; j++)
2247 acb->devstate[i][j] = ARECA_RAID_GONE;
a1f6e021 2248
1a4f550a
NC		 2249 arcmsr_wait_firmware_ready(acb);
2250 arcmsr_iop_confirm(acb);
2251 /* disable all outbound interrupt */
2252 arcmsr_get_firmware_spec(acb);
2253 /*start background rebuild*/
2254 arcmsr_start_adapter_bgrb(acb);
2255 /* empty doorbell Qbuffer if door bell ringed */
2256 arcmsr_clear_doorbell_queue_buffer(acb);
2257 /* enable outbound Post Queue,outbound doorbell Interrupt */
2258 arcmsr_enable_outbound_ints(acb, intmask_org);
2259 acb->acb_flags |= ACB_F_IOP_INITED;
a1f6e021 2260
1a4f550a 2261 pci_enable_pcie_error_reporting(pdev);
a1f6e021 2262 return PCI_ERS_RESULT_RECOVERED;
2263}
2264
2265static void arcmsr_pci_ers_need_reset_forepart(struct pci_dev *pdev)
2266{
2267 struct Scsi_Host *host = pci_get_drvdata(pdev);
1a4f550a 2268 struct AdapterControlBlock *acb = (struct AdapterControlBlock *)host->hostdata;
a1f6e021 2269 struct CommandControlBlock *ccb;
1a4f550a
NC		 2270 uint32_t intmask_org;
2271 int i = 0;
a1f6e021 2272
1a4f550a
NC		 2273 if (atomic_read(&acb->ccboutstandingcount) != 0) {
2274 /* talk to iop 331 outstanding command aborted */
2275 arcmsr_abort_allcmd(acb);
2276 /* wait for 3 sec for all command aborted*/
2277 ssleep(3);
2278 /* disable all outbound interrupt */
2279 intmask_org = arcmsr_disable_outbound_ints(acb);
2280 /* clear all outbound posted Q */
2281 arcmsr_done4abort_postqueue(acb);
2282 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
2283 ccb = acb->pccb_pool[i];
2284 if (ccb->startdone == ARCMSR_CCB_START) {
2285 ccb->startdone = ARCMSR_CCB_ABORTED;
2286 arcmsr_ccb_complete(ccb, 1);
a1f6e021 2287 }
2288 }
1a4f550a
NC		 2289 /* enable all outbound interrupt */
2290 arcmsr_enable_outbound_ints(acb, intmask_org);
2291 }
2292 pci_disable_device(pdev);
a1f6e021 2293}
2294
a1f6e021 2295static void arcmsr_pci_ers_disconnect_forepart(struct pci_dev *pdev)
2296{
1a4f550a
NC		 2297 struct Scsi_Host *host = pci_get_drvdata(pdev);
2298 struct AdapterControlBlock *acb = \
2299 (struct AdapterControlBlock *)host->hostdata;
a1f6e021 2300
1a4f550a
NC		 2301 arcmsr_stop_adapter_bgrb(acb);
2302 arcmsr_flush_adapter_cache(acb);
a1f6e021 2303}
2304
2305static pci_ers_result_t arcmsr_pci_error_detected(struct pci_dev *pdev,
2306 pci_channel_state_t state)
2307{
2308 switch (state) {
2309 case pci_channel_io_frozen:
2310 arcmsr_pci_ers_need_reset_forepart(pdev);
2311 return PCI_ERS_RESULT_NEED_RESET;
2312 case pci_channel_io_perm_failure:
2313 arcmsr_pci_ers_disconnect_forepart(pdev);
2314 return PCI_ERS_RESULT_DISCONNECT;
2315 break;
2316 default:
2317 return PCI_ERS_RESULT_NEED_RESET;
1a4f550a 2318 }
a1f6e021 2319}
1a4f550a 2320#endif
Linux kernel - Deliverables
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