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block, cfq: fix cic lookup locking
[linux-2.6.git] / drivers / scsi / aic94xx / aic94xx_init.c
blobd5ff142c93a2c9a0bdac1e768fb9748be657ca09
1 /*
2 * Aic94xx SAS/SATA driver initialization.
3 *
4 * Copyright (C) 2005 Adaptec, Inc. All rights reserved.
5 * Copyright (C) 2005 Luben Tuikov <luben_tuikov@adaptec.com>
6 *
7 * This file is licensed under GPLv2.
8 *
9 * This file is part of the aic94xx driver.
10 *
11 * The aic94xx driver is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License as
13 * published by the Free Software Foundation; version 2 of the
14 * License.
15 *
16 * The aic94xx driver is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with the aic94xx driver; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
24 *
25 */
26
27 #include <linux/module.h>
28 #include <linux/init.h>
29 #include <linux/kernel.h>
30 #include <linux/pci.h>
31 #include <linux/delay.h>
32 #include <linux/firmware.h>
33 #include <linux/slab.h>
34
35 #include <scsi/scsi_host.h>
36
37 #include "aic94xx.h"
38 #include "aic94xx_reg.h"
39 #include "aic94xx_hwi.h"
40 #include "aic94xx_seq.h"
41 #include "aic94xx_sds.h"
42
43 /* The format is "version.release.patchlevel" */
44 #define ASD_DRIVER_VERSION "1.0.3"
45
46 static int use_msi = 0;
47 module_param_named(use_msi, use_msi, int, S_IRUGO);
48 MODULE_PARM_DESC(use_msi, "\n"
49 "\tEnable(1) or disable(0) using PCI MSI.\n"
50 "\tDefault: 0");
51
52 static int lldd_max_execute_num = 0;
53 module_param_named(collector, lldd_max_execute_num, int, S_IRUGO);
54 MODULE_PARM_DESC(collector, "\n"
55 "\tIf greater than one, tells the SAS Layer to run in Task Collector\n"
56 "\tMode. If 1 or 0, tells the SAS Layer to run in Direct Mode.\n"
57 "\tThe aic94xx SAS LLDD supports both modes.\n"
58 "\tDefault: 0 (Direct Mode).\n");
59
60 static struct scsi_transport_template *aic94xx_transport_template;
61 static int asd_scan_finished(struct Scsi_Host *, unsigned long);
62 static void asd_scan_start(struct Scsi_Host *);
63
64 static struct scsi_host_template aic94xx_sht = {
65 .module = THIS_MODULE,
66 /* .name is initialized */
67 .name = "aic94xx",
68 .queuecommand = sas_queuecommand,
69 .target_alloc = sas_target_alloc,
70 .slave_configure = sas_slave_configure,
71 .slave_destroy = sas_slave_destroy,
72 .scan_finished = asd_scan_finished,
73 .scan_start = asd_scan_start,
74 .change_queue_depth = sas_change_queue_depth,
75 .change_queue_type = sas_change_queue_type,
76 .bios_param = sas_bios_param,
77 .can_queue = 1,
78 .cmd_per_lun = 1,
79 .this_id = -1,
80 .sg_tablesize = SG_ALL,
81 .max_sectors = SCSI_DEFAULT_MAX_SECTORS,
82 .use_clustering = ENABLE_CLUSTERING,
83 .eh_device_reset_handler = sas_eh_device_reset_handler,
84 .eh_bus_reset_handler = sas_eh_bus_reset_handler,
85 .slave_alloc = sas_slave_alloc,
86 .target_destroy = sas_target_destroy,
87 .ioctl = sas_ioctl,
88 };
89
90 static int __devinit asd_map_memio(struct asd_ha_struct *asd_ha)
91 {
92 int err, i;
93 struct asd_ha_addrspace *io_handle;
94
95 asd_ha->iospace = 0;
96 for (i = 0; i < 3; i += 2) {
97 io_handle = &asd_ha->io_handle[i==0?0:1];
98 io_handle->start = pci_resource_start(asd_ha->pcidev, i);
99 io_handle->len = pci_resource_len(asd_ha->pcidev, i);
100 io_handle->flags = pci_resource_flags(asd_ha->pcidev, i);
101 err = -ENODEV;
102 if (!io_handle->start || !io_handle->len) {
103 asd_printk("MBAR%d start or length for %s is 0.\n",
104 i==0?0:1, pci_name(asd_ha->pcidev));
105 goto Err;
106 }
107 err = pci_request_region(asd_ha->pcidev, i, ASD_DRIVER_NAME);
108 if (err) {
109 asd_printk("couldn't reserve memory region for %s\n",
110 pci_name(asd_ha->pcidev));
111 goto Err;
112 }
113 if (io_handle->flags & IORESOURCE_CACHEABLE)
114 io_handle->addr = ioremap(io_handle->start,
115 io_handle->len);
116 else
117 io_handle->addr = ioremap_nocache(io_handle->start,
118 io_handle->len);
119 if (!io_handle->addr) {
120 asd_printk("couldn't map MBAR%d of %s\n", i==0?0:1,
121 pci_name(asd_ha->pcidev));
122 goto Err_unreq;
123 }
124 }
125
126 return 0;
127 Err_unreq:
128 pci_release_region(asd_ha->pcidev, i);
129 Err:
130 if (i > 0) {
131 io_handle = &asd_ha->io_handle[0];
132 iounmap(io_handle->addr);
133 pci_release_region(asd_ha->pcidev, 0);
134 }
135 return err;
136 }
137
138 static void asd_unmap_memio(struct asd_ha_struct *asd_ha)
139 {
140 struct asd_ha_addrspace *io_handle;
141
142 io_handle = &asd_ha->io_handle[1];
143 iounmap(io_handle->addr);
144 pci_release_region(asd_ha->pcidev, 2);
145
146 io_handle = &asd_ha->io_handle[0];
147 iounmap(io_handle->addr);
148 pci_release_region(asd_ha->pcidev, 0);
149 }
150
151 static int __devinit asd_map_ioport(struct asd_ha_struct *asd_ha)
152 {
153 int i = PCI_IOBAR_OFFSET, err;
154 struct asd_ha_addrspace *io_handle = &asd_ha->io_handle[0];
155
156 asd_ha->iospace = 1;
157 io_handle->start = pci_resource_start(asd_ha->pcidev, i);
158 io_handle->len = pci_resource_len(asd_ha->pcidev, i);
159 io_handle->flags = pci_resource_flags(asd_ha->pcidev, i);
160 io_handle->addr = (void __iomem *) io_handle->start;
161 if (!io_handle->start || !io_handle->len) {
162 asd_printk("couldn't get IO ports for %s\n",
163 pci_name(asd_ha->pcidev));
164 return -ENODEV;
165 }
166 err = pci_request_region(asd_ha->pcidev, i, ASD_DRIVER_NAME);
167 if (err) {
168 asd_printk("couldn't reserve io space for %s\n",
169 pci_name(asd_ha->pcidev));
170 }
171
172 return err;
173 }
174
175 static void asd_unmap_ioport(struct asd_ha_struct *asd_ha)
176 {
177 pci_release_region(asd_ha->pcidev, PCI_IOBAR_OFFSET);
178 }
179
180 static int __devinit asd_map_ha(struct asd_ha_struct *asd_ha)
181 {
182 int err;
183 u16 cmd_reg;
184
185 err = pci_read_config_word(asd_ha->pcidev, PCI_COMMAND, &cmd_reg);
186 if (err) {
187 asd_printk("couldn't read command register of %s\n",
188 pci_name(asd_ha->pcidev));
189 goto Err;
190 }
191
192 err = -ENODEV;
193 if (cmd_reg & PCI_COMMAND_MEMORY) {
194 if ((err = asd_map_memio(asd_ha)))
195 goto Err;
196 } else if (cmd_reg & PCI_COMMAND_IO) {
197 if ((err = asd_map_ioport(asd_ha)))
198 goto Err;
199 asd_printk("%s ioport mapped -- upgrade your hardware\n",
200 pci_name(asd_ha->pcidev));
201 } else {
202 asd_printk("no proper device access to %s\n",
203 pci_name(asd_ha->pcidev));
204 goto Err;
205 }
206
207 return 0;
208 Err:
209 return err;
210 }
211
212 static void asd_unmap_ha(struct asd_ha_struct *asd_ha)
213 {
214 if (asd_ha->iospace)
215 asd_unmap_ioport(asd_ha);
216 else
217 asd_unmap_memio(asd_ha);
218 }
219
220 static const char *asd_dev_rev[30] = {
221 [0] = "A0",
222 [1] = "A1",
223 [8] = "B0",
224 };
225
226 static int __devinit asd_common_setup(struct asd_ha_struct *asd_ha)
227 {
228 int err, i;
229
230 asd_ha->revision_id = asd_ha->pcidev->revision;
231
232 err = -ENODEV;
233 if (asd_ha->revision_id < AIC9410_DEV_REV_B0) {
234 asd_printk("%s is revision %s (%X), which is not supported\n",
235 pci_name(asd_ha->pcidev),
236 asd_dev_rev[asd_ha->revision_id],
237 asd_ha->revision_id);
238 goto Err;
239 }
240 /* Provide some sane default values. */
241 asd_ha->hw_prof.max_scbs = 512;
242 asd_ha->hw_prof.max_ddbs = ASD_MAX_DDBS;
243 asd_ha->hw_prof.num_phys = ASD_MAX_PHYS;
244 /* All phys are enabled, by default. */
245 asd_ha->hw_prof.enabled_phys = 0xFF;
246 for (i = 0; i < ASD_MAX_PHYS; i++) {
247 asd_ha->hw_prof.phy_desc[i].max_sas_lrate =
248 SAS_LINK_RATE_3_0_GBPS;
249 asd_ha->hw_prof.phy_desc[i].min_sas_lrate =
250 SAS_LINK_RATE_1_5_GBPS;
251 asd_ha->hw_prof.phy_desc[i].max_sata_lrate =
252 SAS_LINK_RATE_1_5_GBPS;
253 asd_ha->hw_prof.phy_desc[i].min_sata_lrate =
254 SAS_LINK_RATE_1_5_GBPS;
255 }
256
257 return 0;
258 Err:
259 return err;
260 }
261
262 static int __devinit asd_aic9410_setup(struct asd_ha_struct *asd_ha)
263 {
264 int err = asd_common_setup(asd_ha);
265
266 if (err)
267 return err;
268
269 asd_ha->hw_prof.addr_range = 8;
270 asd_ha->hw_prof.port_name_base = 0;
271 asd_ha->hw_prof.dev_name_base = 8;
272 asd_ha->hw_prof.sata_name_base = 16;
273
274 return 0;
275 }
276
277 static int __devinit asd_aic9405_setup(struct asd_ha_struct *asd_ha)
278 {
279 int err = asd_common_setup(asd_ha);
280
281 if (err)
282 return err;
283
284 asd_ha->hw_prof.addr_range = 4;
285 asd_ha->hw_prof.port_name_base = 0;
286 asd_ha->hw_prof.dev_name_base = 4;
287 asd_ha->hw_prof.sata_name_base = 8;
288
289 return 0;
290 }
291
292 static ssize_t asd_show_dev_rev(struct device *dev,
293 struct device_attribute *attr, char *buf)
294 {
295 struct asd_ha_struct *asd_ha = dev_to_asd_ha(dev);
296 return snprintf(buf, PAGE_SIZE, "%s\n",
297 asd_dev_rev[asd_ha->revision_id]);
298 }
299 static DEVICE_ATTR(revision, S_IRUGO, asd_show_dev_rev, NULL);
300
301 static ssize_t asd_show_dev_bios_build(struct device *dev,
302 struct device_attribute *attr,char *buf)
303 {
304 struct asd_ha_struct *asd_ha = dev_to_asd_ha(dev);
305 return snprintf(buf, PAGE_SIZE, "%d\n", asd_ha->hw_prof.bios.bld);
306 }
307 static DEVICE_ATTR(bios_build, S_IRUGO, asd_show_dev_bios_build, NULL);
308
309 static ssize_t asd_show_dev_pcba_sn(struct device *dev,
310 struct device_attribute *attr, char *buf)
311 {
312 struct asd_ha_struct *asd_ha = dev_to_asd_ha(dev);
313 return snprintf(buf, PAGE_SIZE, "%s\n", asd_ha->hw_prof.pcba_sn);
314 }
315 static DEVICE_ATTR(pcba_sn, S_IRUGO, asd_show_dev_pcba_sn, NULL);
316
317 #define FLASH_CMD_NONE 0x00
318 #define FLASH_CMD_UPDATE 0x01
319 #define FLASH_CMD_VERIFY 0x02
320
321 struct flash_command {
322 u8 command[8];
323 int code;
324 };
325
326 static struct flash_command flash_command_table[] =
327 {
328 {"verify", FLASH_CMD_VERIFY},
329 {"update", FLASH_CMD_UPDATE},
330 {"", FLASH_CMD_NONE} /* Last entry should be NULL. */
331 };
332
333 struct error_bios {
334 char *reason;
335 int err_code;
336 };
337
338 static struct error_bios flash_error_table[] =
339 {
340 {"Failed to open bios image file", FAIL_OPEN_BIOS_FILE},
341 {"PCI ID mismatch", FAIL_CHECK_PCI_ID},
342 {"Checksum mismatch", FAIL_CHECK_SUM},
343 {"Unknown Error", FAIL_UNKNOWN},
344 {"Failed to verify.", FAIL_VERIFY},
345 {"Failed to reset flash chip.", FAIL_RESET_FLASH},
346 {"Failed to find flash chip type.", FAIL_FIND_FLASH_ID},
347 {"Failed to erash flash chip.", FAIL_ERASE_FLASH},
348 {"Failed to program flash chip.", FAIL_WRITE_FLASH},
349 {"Flash in progress", FLASH_IN_PROGRESS},
350 {"Image file size Error", FAIL_FILE_SIZE},
351 {"Input parameter error", FAIL_PARAMETERS},
352 {"Out of memory", FAIL_OUT_MEMORY},
353 {"OK", 0} /* Last entry err_code = 0. */
354 };
355
356 static ssize_t asd_store_update_bios(struct device *dev,
357 struct device_attribute *attr,
358 const char *buf, size_t count)
359 {
360 struct asd_ha_struct *asd_ha = dev_to_asd_ha(dev);
361 char *cmd_ptr, *filename_ptr;
362 struct bios_file_header header, *hdr_ptr;
363 int res, i;
364 u32 csum = 0;
365 int flash_command = FLASH_CMD_NONE;
366 int err = 0;
367
368 cmd_ptr = kzalloc(count*2, GFP_KERNEL);
369
370 if (!cmd_ptr) {
371 err = FAIL_OUT_MEMORY;
372 goto out;
373 }
374
375 filename_ptr = cmd_ptr + count;
376 res = sscanf(buf, "%s %s", cmd_ptr, filename_ptr);
377 if (res != 2) {
378 err = FAIL_PARAMETERS;
379 goto out1;
380 }
381
382 for (i = 0; flash_command_table[i].code != FLASH_CMD_NONE; i++) {
383 if (!memcmp(flash_command_table[i].command,
384 cmd_ptr, strlen(cmd_ptr))) {
385 flash_command = flash_command_table[i].code;
386 break;
387 }
388 }
389 if (flash_command == FLASH_CMD_NONE) {
390 err = FAIL_PARAMETERS;
391 goto out1;
392 }
393
394 if (asd_ha->bios_status == FLASH_IN_PROGRESS) {
395 err = FLASH_IN_PROGRESS;
396 goto out1;
397 }
398 err = request_firmware(&asd_ha->bios_image,
399 filename_ptr,
400 &asd_ha->pcidev->dev);
401 if (err) {
402 asd_printk("Failed to load bios image file %s, error %d\n",
403 filename_ptr, err);
404 err = FAIL_OPEN_BIOS_FILE;
405 goto out1;
406 }
407
408 hdr_ptr = (struct bios_file_header *)asd_ha->bios_image->data;
409
410 if ((hdr_ptr->contrl_id.vendor != asd_ha->pcidev->vendor ||
411 hdr_ptr->contrl_id.device != asd_ha->pcidev->device) &&
412 (hdr_ptr->contrl_id.sub_vendor != asd_ha->pcidev->vendor ||
413 hdr_ptr->contrl_id.sub_device != asd_ha->pcidev->device)) {
414
415 ASD_DPRINTK("The PCI vendor or device id does not match\n");
416 ASD_DPRINTK("vendor=%x dev=%x sub_vendor=%x sub_dev=%x"
417 " pci vendor=%x pci dev=%x\n",
418 hdr_ptr->contrl_id.vendor,
419 hdr_ptr->contrl_id.device,
420 hdr_ptr->contrl_id.sub_vendor,
421 hdr_ptr->contrl_id.sub_device,
422 asd_ha->pcidev->vendor,
423 asd_ha->pcidev->device);
424 err = FAIL_CHECK_PCI_ID;
425 goto out2;
426 }
427
428 if (hdr_ptr->filelen != asd_ha->bios_image->size) {
429 err = FAIL_FILE_SIZE;
430 goto out2;
431 }
432
433 /* calculate checksum */
434 for (i = 0; i < hdr_ptr->filelen; i++)
435 csum += asd_ha->bios_image->data[i];
436
437 if ((csum & 0x0000ffff) != hdr_ptr->checksum) {
438 ASD_DPRINTK("BIOS file checksum mismatch\n");
439 err = FAIL_CHECK_SUM;
440 goto out2;
441 }
442 if (flash_command == FLASH_CMD_UPDATE) {
443 asd_ha->bios_status = FLASH_IN_PROGRESS;
444 err = asd_write_flash_seg(asd_ha,
445 &asd_ha->bios_image->data[sizeof(*hdr_ptr)],
446 0, hdr_ptr->filelen-sizeof(*hdr_ptr));
447 if (!err)
448 err = asd_verify_flash_seg(asd_ha,
449 &asd_ha->bios_image->data[sizeof(*hdr_ptr)],
450 0, hdr_ptr->filelen-sizeof(*hdr_ptr));
451 } else {
452 asd_ha->bios_status = FLASH_IN_PROGRESS;
453 err = asd_verify_flash_seg(asd_ha,
454 &asd_ha->bios_image->data[sizeof(header)],
455 0, hdr_ptr->filelen-sizeof(header));
456 }
457
458 out2:
459 release_firmware(asd_ha->bios_image);
460 out1:
461 kfree(cmd_ptr);
462 out:
463 asd_ha->bios_status = err;
464
465 if (!err)
466 return count;
467 else
468 return -err;
469 }
470
471 static ssize_t asd_show_update_bios(struct device *dev,
472 struct device_attribute *attr, char *buf)
473 {
474 int i;
475 struct asd_ha_struct *asd_ha = dev_to_asd_ha(dev);
476
477 for (i = 0; flash_error_table[i].err_code != 0; i++) {
478 if (flash_error_table[i].err_code == asd_ha->bios_status)
479 break;
480 }
481 if (asd_ha->bios_status != FLASH_IN_PROGRESS)
482 asd_ha->bios_status = FLASH_OK;
483
484 return snprintf(buf, PAGE_SIZE, "status=%x %s\n",
485 flash_error_table[i].err_code,
486 flash_error_table[i].reason);
487 }
488
489 static DEVICE_ATTR(update_bios, S_IRUGO|S_IWUSR,
490 asd_show_update_bios, asd_store_update_bios);
491
492 static int asd_create_dev_attrs(struct asd_ha_struct *asd_ha)
493 {
494 int err;
495
496 err = device_create_file(&asd_ha->pcidev->dev, &dev_attr_revision);
497 if (err)
498 return err;
499
500 err = device_create_file(&asd_ha->pcidev->dev, &dev_attr_bios_build);
501 if (err)
502 goto err_rev;
503
504 err = device_create_file(&asd_ha->pcidev->dev, &dev_attr_pcba_sn);
505 if (err)
506 goto err_biosb;
507 err = device_create_file(&asd_ha->pcidev->dev, &dev_attr_update_bios);
508 if (err)
509 goto err_update_bios;
510
511 return 0;
512
513 err_update_bios:
514 device_remove_file(&asd_ha->pcidev->dev, &dev_attr_pcba_sn);
515 err_biosb:
516 device_remove_file(&asd_ha->pcidev->dev, &dev_attr_bios_build);
517 err_rev:
518 device_remove_file(&asd_ha->pcidev->dev, &dev_attr_revision);
519 return err;
520 }
521
522 static void asd_remove_dev_attrs(struct asd_ha_struct *asd_ha)
523 {
524 device_remove_file(&asd_ha->pcidev->dev, &dev_attr_revision);
525 device_remove_file(&asd_ha->pcidev->dev, &dev_attr_bios_build);
526 device_remove_file(&asd_ha->pcidev->dev, &dev_attr_pcba_sn);
527 device_remove_file(&asd_ha->pcidev->dev, &dev_attr_update_bios);
528 }
529
530 /* The first entry, 0, is used for dynamic ids, the rest for devices
531 * we know about.
532 */
533 static const struct asd_pcidev_struct {
534 const char * name;
535 int (*setup)(struct asd_ha_struct *asd_ha);
536 } asd_pcidev_data[] __devinitconst = {
537 /* Id 0 is used for dynamic ids. */
538 { .name = "Adaptec AIC-94xx SAS/SATA Host Adapter",
539 .setup = asd_aic9410_setup
540 },
541 { .name = "Adaptec AIC-9410W SAS/SATA Host Adapter",
542 .setup = asd_aic9410_setup
543 },
544 { .name = "Adaptec AIC-9405W SAS/SATA Host Adapter",
545 .setup = asd_aic9405_setup
546 },
547 };
548
549 static int asd_create_ha_caches(struct asd_ha_struct *asd_ha)
550 {
551 asd_ha->scb_pool = dma_pool_create(ASD_DRIVER_NAME "_scb_pool",
552 &asd_ha->pcidev->dev,
553 sizeof(struct scb),
554 8, 0);
555 if (!asd_ha->scb_pool) {
556 asd_printk("couldn't create scb pool\n");
557 return -ENOMEM;
558 }
559
560 return 0;
561 }
562
563 /**
564 * asd_free_edbs -- free empty data buffers
565 * asd_ha: pointer to host adapter structure
566 */
567 static void asd_free_edbs(struct asd_ha_struct *asd_ha)
568 {
569 struct asd_seq_data *seq = &asd_ha->seq;
570 int i;
571
572 for (i = 0; i < seq->num_edbs; i++)
573 asd_free_coherent(asd_ha, seq->edb_arr[i]);
574 kfree(seq->edb_arr);
575 seq->edb_arr = NULL;
576 }
577
578 static void asd_free_escbs(struct asd_ha_struct *asd_ha)
579 {
580 struct asd_seq_data *seq = &asd_ha->seq;
581 int i;
582
583 for (i = 0; i < seq->num_escbs; i++) {
584 if (!list_empty(&seq->escb_arr[i]->list))
585 list_del_init(&seq->escb_arr[i]->list);
586
587 asd_ascb_free(seq->escb_arr[i]);
588 }
589 kfree(seq->escb_arr);
590 seq->escb_arr = NULL;
591 }
592
593 static void asd_destroy_ha_caches(struct asd_ha_struct *asd_ha)
594 {
595 int i;
596
597 if (asd_ha->hw_prof.ddb_ext)
598 asd_free_coherent(asd_ha, asd_ha->hw_prof.ddb_ext);
599 if (asd_ha->hw_prof.scb_ext)
600 asd_free_coherent(asd_ha, asd_ha->hw_prof.scb_ext);
601
602 if (asd_ha->hw_prof.ddb_bitmap)
603 kfree(asd_ha->hw_prof.ddb_bitmap);
604 asd_ha->hw_prof.ddb_bitmap = NULL;
605
606 for (i = 0; i < ASD_MAX_PHYS; i++) {
607 struct asd_phy *phy = &asd_ha->phys[i];
608
609 asd_free_coherent(asd_ha, phy->id_frm_tok);
610 }
611 if (asd_ha->seq.escb_arr)
612 asd_free_escbs(asd_ha);
613 if (asd_ha->seq.edb_arr)
614 asd_free_edbs(asd_ha);
615 if (asd_ha->hw_prof.ue.area) {
616 kfree(asd_ha->hw_prof.ue.area);
617 asd_ha->hw_prof.ue.area = NULL;
618 }
619 if (asd_ha->seq.tc_index_array) {
620 kfree(asd_ha->seq.tc_index_array);
621 kfree(asd_ha->seq.tc_index_bitmap);
622 asd_ha->seq.tc_index_array = NULL;
623 asd_ha->seq.tc_index_bitmap = NULL;
624 }
625 if (asd_ha->seq.actual_dl) {
626 asd_free_coherent(asd_ha, asd_ha->seq.actual_dl);
627 asd_ha->seq.actual_dl = NULL;
628 asd_ha->seq.dl = NULL;
629 }
630 if (asd_ha->seq.next_scb.vaddr) {
631 dma_pool_free(asd_ha->scb_pool, asd_ha->seq.next_scb.vaddr,
632 asd_ha->seq.next_scb.dma_handle);
633 asd_ha->seq.next_scb.vaddr = NULL;
634 }
635 dma_pool_destroy(asd_ha->scb_pool);
636 asd_ha->scb_pool = NULL;
637 }
638
639 struct kmem_cache *asd_dma_token_cache;
640 struct kmem_cache *asd_ascb_cache;
641
642 static int asd_create_global_caches(void)
643 {
644 if (!asd_dma_token_cache) {
645 asd_dma_token_cache
646 = kmem_cache_create(ASD_DRIVER_NAME "_dma_token",
647 sizeof(struct asd_dma_tok),
648 0,
649 SLAB_HWCACHE_ALIGN,
650 NULL);
651 if (!asd_dma_token_cache) {
652 asd_printk("couldn't create dma token cache\n");
653 return -ENOMEM;
654 }
655 }
656
657 if (!asd_ascb_cache) {
658 asd_ascb_cache = kmem_cache_create(ASD_DRIVER_NAME "_ascb",
659 sizeof(struct asd_ascb),
660 0,
661 SLAB_HWCACHE_ALIGN,
662 NULL);
663 if (!asd_ascb_cache) {
664 asd_printk("couldn't create ascb cache\n");
665 goto Err;
666 }
667 }
668
669 return 0;
670 Err:
671 kmem_cache_destroy(asd_dma_token_cache);
672 asd_dma_token_cache = NULL;
673 return -ENOMEM;
674 }
675
676 static void asd_destroy_global_caches(void)
677 {
678 if (asd_dma_token_cache)
679 kmem_cache_destroy(asd_dma_token_cache);
680 asd_dma_token_cache = NULL;
681
682 if (asd_ascb_cache)
683 kmem_cache_destroy(asd_ascb_cache);
684 asd_ascb_cache = NULL;
685 }
686
687 static int asd_register_sas_ha(struct asd_ha_struct *asd_ha)
688 {
689 int i;
690 struct asd_sas_phy **sas_phys =
691 kcalloc(ASD_MAX_PHYS, sizeof(*sas_phys), GFP_KERNEL);
692 struct asd_sas_port **sas_ports =
693 kcalloc(ASD_MAX_PHYS, sizeof(*sas_ports), GFP_KERNEL);
694
695 if (!sas_phys || !sas_ports) {
696 kfree(sas_phys);
697 kfree(sas_ports);
698 return -ENOMEM;
699 }
700
701 asd_ha->sas_ha.sas_ha_name = (char *) asd_ha->name;
702 asd_ha->sas_ha.lldd_module = THIS_MODULE;
703 asd_ha->sas_ha.sas_addr = &asd_ha->hw_prof.sas_addr[0];
704
705 for (i = 0; i < ASD_MAX_PHYS; i++) {
706 sas_phys[i] = &asd_ha->phys[i].sas_phy;
707 sas_ports[i] = &asd_ha->ports[i];
708 }
709
710 asd_ha->sas_ha.sas_phy = sas_phys;
711 asd_ha->sas_ha.sas_port= sas_ports;
712 asd_ha->sas_ha.num_phys= ASD_MAX_PHYS;
713
714 asd_ha->sas_ha.lldd_queue_size = asd_ha->seq.can_queue;
715 asd_ha->sas_ha.lldd_max_execute_num = lldd_max_execute_num;
716
717 return sas_register_ha(&asd_ha->sas_ha);
718 }
719
720 static int asd_unregister_sas_ha(struct asd_ha_struct *asd_ha)
721 {
722 int err;
723
724 err = sas_unregister_ha(&asd_ha->sas_ha);
725
726 sas_remove_host(asd_ha->sas_ha.core.shost);
727 scsi_remove_host(asd_ha->sas_ha.core.shost);
728 scsi_host_put(asd_ha->sas_ha.core.shost);
729
730 kfree(asd_ha->sas_ha.sas_phy);
731 kfree(asd_ha->sas_ha.sas_port);
732
733 return err;
734 }
735
736 static int __devinit asd_pci_probe(struct pci_dev *dev,
737 const struct pci_device_id *id)
738 {
739 const struct asd_pcidev_struct *asd_dev;
740 unsigned asd_id = (unsigned) id->driver_data;
741 struct asd_ha_struct *asd_ha;
742 struct Scsi_Host *shost;
743 int err;
744
745 if (asd_id >= ARRAY_SIZE(asd_pcidev_data)) {
746 asd_printk("wrong driver_data in PCI table\n");
747 return -ENODEV;
748 }
749
750 if ((err = pci_enable_device(dev))) {
751 asd_printk("couldn't enable device %s\n", pci_name(dev));
752 return err;
753 }
754
755 pci_set_master(dev);
756
757 err = -ENOMEM;
758
759 shost = scsi_host_alloc(&aic94xx_sht, sizeof(void *));
760 if (!shost)
761 goto Err;
762
763 asd_dev = &asd_pcidev_data[asd_id];
764
765 asd_ha = kzalloc(sizeof(*asd_ha), GFP_KERNEL);
766 if (!asd_ha) {
767 asd_printk("out of memory\n");
768 goto Err_put;
769 }
770 asd_ha->pcidev = dev;
771 asd_ha->sas_ha.dev = &asd_ha->pcidev->dev;
772 asd_ha->sas_ha.lldd_ha = asd_ha;
773
774 asd_ha->bios_status = FLASH_OK;
775 asd_ha->name = asd_dev->name;
776 asd_printk("found %s, device %s\n", asd_ha->name, pci_name(dev));
777
778 SHOST_TO_SAS_HA(shost) = &asd_ha->sas_ha;
779 asd_ha->sas_ha.core.shost = shost;
780 shost->transportt = aic94xx_transport_template;
781 shost->max_id = ~0;
782 shost->max_lun = ~0;
783 shost->max_cmd_len = 16;
784
785 err = scsi_add_host(shost, &dev->dev);
786 if (err)
787 goto Err_free;
788
789 err = asd_dev->setup(asd_ha);
790 if (err)
791 goto Err_remove;
792
793 err = -ENODEV;
794 if (!pci_set_dma_mask(dev, DMA_BIT_MASK(64))
795 && !pci_set_consistent_dma_mask(dev, DMA_BIT_MASK(64)))
796 ;
797 else if (!pci_set_dma_mask(dev, DMA_BIT_MASK(32))
798 && !pci_set_consistent_dma_mask(dev, DMA_BIT_MASK(32)))
799 ;
800 else {
801 asd_printk("no suitable DMA mask for %s\n", pci_name(dev));
802 goto Err_remove;
803 }
804
805 pci_set_drvdata(dev, asd_ha);
806
807 err = asd_map_ha(asd_ha);
808 if (err)
809 goto Err_remove;
810
811 err = asd_create_ha_caches(asd_ha);
812 if (err)
813 goto Err_unmap;
814
815 err = asd_init_hw(asd_ha);
816 if (err)
817 goto Err_free_cache;
818
819 asd_printk("device %s: SAS addr %llx, PCBA SN %s, %d phys, %d enabled "
820 "phys, flash %s, BIOS %s%d\n",
821 pci_name(dev), SAS_ADDR(asd_ha->hw_prof.sas_addr),
822 asd_ha->hw_prof.pcba_sn, asd_ha->hw_prof.max_phys,
823 asd_ha->hw_prof.num_phys,
824 asd_ha->hw_prof.flash.present ? "present" : "not present",
825 asd_ha->hw_prof.bios.present ? "build " : "not present",
826 asd_ha->hw_prof.bios.bld);
827
828 shost->can_queue = asd_ha->seq.can_queue;
829
830 if (use_msi)
831 pci_enable_msi(asd_ha->pcidev);
832
833 err = request_irq(asd_ha->pcidev->irq, asd_hw_isr, IRQF_SHARED,
834 ASD_DRIVER_NAME, asd_ha);
835 if (err) {
836 asd_printk("couldn't get irq %d for %s\n",
837 asd_ha->pcidev->irq, pci_name(asd_ha->pcidev));
838 goto Err_irq;
839 }
840 asd_enable_ints(asd_ha);
841
842 err = asd_init_post_escbs(asd_ha);
843 if (err) {
844 asd_printk("couldn't post escbs for %s\n",
845 pci_name(asd_ha->pcidev));
846 goto Err_escbs;
847 }
848 ASD_DPRINTK("escbs posted\n");
849
850 err = asd_create_dev_attrs(asd_ha);
851 if (err)
852 goto Err_dev_attrs;
853
854 err = asd_register_sas_ha(asd_ha);
855 if (err)
856 goto Err_reg_sas;
857
858 scsi_scan_host(shost);
859
860 return 0;
861
862 Err_reg_sas:
863 asd_remove_dev_attrs(asd_ha);
864 Err_dev_attrs:
865 Err_escbs:
866 asd_disable_ints(asd_ha);
867 free_irq(dev->irq, asd_ha);
868 Err_irq:
869 if (use_msi)
870 pci_disable_msi(dev);
871 asd_chip_hardrst(asd_ha);
872 Err_free_cache:
873 asd_destroy_ha_caches(asd_ha);
874 Err_unmap:
875 asd_unmap_ha(asd_ha);
876 Err_remove:
877 scsi_remove_host(shost);
878 Err_free:
879 kfree(asd_ha);
880 Err_put:
881 scsi_host_put(shost);
882 Err:
883 pci_disable_device(dev);
884 return err;
885 }
886
887 static void asd_free_queues(struct asd_ha_struct *asd_ha)
888 {
889 unsigned long flags;
890 LIST_HEAD(pending);
891 struct list_head *n, *pos;
892
893 spin_lock_irqsave(&asd_ha->seq.pend_q_lock, flags);
894 asd_ha->seq.pending = 0;
895 list_splice_init(&asd_ha->seq.pend_q, &pending);
896 spin_unlock_irqrestore(&asd_ha->seq.pend_q_lock, flags);
897
898 if (!list_empty(&pending))
899 ASD_DPRINTK("Uh-oh! Pending is not empty!\n");
900
901 list_for_each_safe(pos, n, &pending) {
902 struct asd_ascb *ascb = list_entry(pos, struct asd_ascb, list);
903 /*
904 * Delete unexpired ascb timers. This may happen if we issue
905 * a CONTROL PHY scb to an adapter and rmmod before the scb
906 * times out. Apparently we don't wait for the CONTROL PHY
907 * to complete, so it doesn't matter if we kill the timer.
908 */
909 del_timer_sync(&ascb->timer);
910 WARN_ON(ascb->scb->header.opcode != CONTROL_PHY);
911
912 list_del_init(pos);
913 ASD_DPRINTK("freeing from pending\n");
914 asd_ascb_free(ascb);
915 }
916 }
917
918 static void asd_turn_off_leds(struct asd_ha_struct *asd_ha)
919 {
920 u8 phy_mask = asd_ha->hw_prof.enabled_phys;
921 u8 i;
922
923 for_each_phy(phy_mask, phy_mask, i) {
924 asd_turn_led(asd_ha, i, 0);
925 asd_control_led(asd_ha, i, 0);
926 }
927 }
928
929 static void __devexit asd_pci_remove(struct pci_dev *dev)
930 {
931 struct asd_ha_struct *asd_ha = pci_get_drvdata(dev);
932
933 if (!asd_ha)
934 return;
935
936 asd_unregister_sas_ha(asd_ha);
937
938 asd_disable_ints(asd_ha);
939
940 asd_remove_dev_attrs(asd_ha);
941
942 /* XXX more here as needed */
943
944 free_irq(dev->irq, asd_ha);
945 if (use_msi)
946 pci_disable_msi(asd_ha->pcidev);
947 asd_turn_off_leds(asd_ha);
948 asd_chip_hardrst(asd_ha);
949 asd_free_queues(asd_ha);
950 asd_destroy_ha_caches(asd_ha);
951 asd_unmap_ha(asd_ha);
952 kfree(asd_ha);
953 pci_disable_device(dev);
954 return;
955 }
956
957 static void asd_scan_start(struct Scsi_Host *shost)
958 {
959 struct asd_ha_struct *asd_ha;
960 int err;
961
962 asd_ha = SHOST_TO_SAS_HA(shost)->lldd_ha;
963 err = asd_enable_phys(asd_ha, asd_ha->hw_prof.enabled_phys);
964 if (err)
965 asd_printk("Couldn't enable phys, err:%d\n", err);
966 }
967
968 static int asd_scan_finished(struct Scsi_Host *shost, unsigned long time)
969 {
970 /* give the phy enabling interrupt event time to come in (1s
971 * is empirically about all it takes) */
972 if (time < HZ)
973 return 0;
974 /* Wait for discovery to finish */
975 scsi_flush_work(shost);
976 return 1;
977 }
978
979 static ssize_t asd_version_show(struct device_driver *driver, char *buf)
980 {
981 return snprintf(buf, PAGE_SIZE, "%s\n", ASD_DRIVER_VERSION);
982 }
983 static DRIVER_ATTR(version, S_IRUGO, asd_version_show, NULL);
984
985 static int asd_create_driver_attrs(struct device_driver *driver)
986 {
987 return driver_create_file(driver, &driver_attr_version);
988 }
989
990 static void asd_remove_driver_attrs(struct device_driver *driver)
991 {
992 driver_remove_file(driver, &driver_attr_version);
993 }
994
995 static struct sas_domain_function_template aic94xx_transport_functions = {
996 .lldd_dev_found = asd_dev_found,
997 .lldd_dev_gone = asd_dev_gone,
998
999 .lldd_execute_task = asd_execute_task,
1000
1001 .lldd_abort_task = asd_abort_task,
1002 .lldd_abort_task_set = asd_abort_task_set,
1003 .lldd_clear_aca = asd_clear_aca,
1004 .lldd_clear_task_set = asd_clear_task_set,
1005 .lldd_I_T_nexus_reset = asd_I_T_nexus_reset,
1006 .lldd_lu_reset = asd_lu_reset,
1007 .lldd_query_task = asd_query_task,
1008
1009 .lldd_clear_nexus_port = asd_clear_nexus_port,
1010 .lldd_clear_nexus_ha = asd_clear_nexus_ha,
1011
1012 .lldd_control_phy = asd_control_phy,
1013 };
1014
1015 static const struct pci_device_id aic94xx_pci_table[] __devinitdata = {
1016 {PCI_DEVICE(PCI_VENDOR_ID_ADAPTEC2, 0x410),0, 0, 1},
1017 {PCI_DEVICE(PCI_VENDOR_ID_ADAPTEC2, 0x412),0, 0, 1},
1018 {PCI_DEVICE(PCI_VENDOR_ID_ADAPTEC2, 0x416),0, 0, 1},
1019 {PCI_DEVICE(PCI_VENDOR_ID_ADAPTEC2, 0x41E),0, 0, 1},
1020 {PCI_DEVICE(PCI_VENDOR_ID_ADAPTEC2, 0x41F),0, 0, 1},
1021 {PCI_DEVICE(PCI_VENDOR_ID_ADAPTEC2, 0x430),0, 0, 2},
1022 {PCI_DEVICE(PCI_VENDOR_ID_ADAPTEC2, 0x432),0, 0, 2},
1023 {PCI_DEVICE(PCI_VENDOR_ID_ADAPTEC2, 0x43E),0, 0, 2},
1024 {PCI_DEVICE(PCI_VENDOR_ID_ADAPTEC2, 0x43F),0, 0, 2},
1025 {}
1026 };
1027
1028 MODULE_DEVICE_TABLE(pci, aic94xx_pci_table);
1029
1030 static struct pci_driver aic94xx_pci_driver = {
1031 .name = ASD_DRIVER_NAME,
1032 .id_table = aic94xx_pci_table,
1033 .probe = asd_pci_probe,
1034 .remove = __devexit_p(asd_pci_remove),
1035 };
1036
1037 static int __init aic94xx_init(void)
1038 {
1039 int err;
1040
1041
1042 asd_printk("%s version %s loaded\n", ASD_DRIVER_DESCRIPTION,
1043 ASD_DRIVER_VERSION);
1044
1045 err = asd_create_global_caches();
1046 if (err)
1047 return err;
1048
1049 aic94xx_transport_template =
1050 sas_domain_attach_transport(&aic94xx_transport_functions);
1051 if (!aic94xx_transport_template)
1052 goto out_destroy_caches;
1053
1054 err = pci_register_driver(&aic94xx_pci_driver);
1055 if (err)
1056 goto out_release_transport;
1057
1058 err = asd_create_driver_attrs(&aic94xx_pci_driver.driver);
1059 if (err)
1060 goto out_unregister_pcidrv;
1061
1062 return err;
1063
1064 out_unregister_pcidrv:
1065 pci_unregister_driver(&aic94xx_pci_driver);
1066 out_release_transport:
1067 sas_release_transport(aic94xx_transport_template);
1068 out_destroy_caches:
1069 asd_destroy_global_caches();
1070
1071 return err;
1072 }
1073
1074 static void __exit aic94xx_exit(void)
1075 {
1076 asd_remove_driver_attrs(&aic94xx_pci_driver.driver);
1077 pci_unregister_driver(&aic94xx_pci_driver);
1078 sas_release_transport(aic94xx_transport_template);
1079 asd_release_firmware();
1080 asd_destroy_global_caches();
1081 asd_printk("%s version %s unloaded\n", ASD_DRIVER_DESCRIPTION,
1082 ASD_DRIVER_VERSION);
1083 }
1084
1085 module_init(aic94xx_init);
1086 module_exit(aic94xx_exit);
1087
1088 MODULE_AUTHOR("Luben Tuikov <luben_tuikov@adaptec.com>");
1089 MODULE_DESCRIPTION(ASD_DRIVER_DESCRIPTION);
1090 MODULE_LICENSE("GPL v2");
1091 MODULE_VERSION(ASD_DRIVER_VERSION);
Linus' kernel tree