1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * Aic94xx SAS/SATA driver initialization.
4  *
5  * Copyright (C) 2005 Adaptec, Inc.  All rights reserved.
6  * Copyright (C) 2005 Luben Tuikov <luben_tuikov@adaptec.com>
7  */
8 
9 #include <linux/module.h>
10 #include <linux/init.h>
11 #include <linux/kernel.h>
12 #include <linux/pci.h>
13 #include <linux/delay.h>
14 #include <linux/firmware.h>
15 #include <linux/slab.h>
16 
17 #include <scsi/scsi_host.h>
18 
19 #include "aic94xx.h"
20 #include "aic94xx_reg.h"
21 #include "aic94xx_hwi.h"
22 #include "aic94xx_seq.h"
23 #include "aic94xx_sds.h"
24 
25 /* The format is "version.release.patchlevel" */
26 #define ASD_DRIVER_VERSION "1.0.3"
27 
28 static int use_msi = 0;
29 module_param_named(use_msi, use_msi, int, S_IRUGO);
30 MODULE_PARM_DESC(use_msi, "\n"
31 	"\tEnable(1) or disable(0) using PCI MSI.\n"
32 	"\tDefault: 0");
33 
34 static struct scsi_transport_template *aic94xx_transport_template;
35 static int asd_scan_finished(struct Scsi_Host *, unsigned long);
36 static void asd_scan_start(struct Scsi_Host *);
37 
38 static struct scsi_host_template aic94xx_sht = {
39 	.module			= THIS_MODULE,
40 	/* .name is initialized */
41 	.name			= "aic94xx",
42 	.queuecommand		= sas_queuecommand,
43 	.target_alloc		= sas_target_alloc,
44 	.slave_configure	= sas_slave_configure,
45 	.scan_finished		= asd_scan_finished,
46 	.scan_start		= asd_scan_start,
47 	.change_queue_depth	= sas_change_queue_depth,
48 	.bios_param		= sas_bios_param,
49 	.can_queue		= 1,
50 	.this_id		= -1,
51 	.sg_tablesize		= SG_ALL,
52 	.max_sectors		= SCSI_DEFAULT_MAX_SECTORS,
53 	.eh_device_reset_handler	= sas_eh_device_reset_handler,
54 	.eh_target_reset_handler	= sas_eh_target_reset_handler,
55 	.target_destroy		= sas_target_destroy,
56 	.ioctl			= sas_ioctl,
57 	.track_queue_depth	= 1,
58 };
59 
60 static int asd_map_memio(struct asd_ha_struct *asd_ha)
61 {
62 	int err, i;
63 	struct asd_ha_addrspace *io_handle;
64 
65 	asd_ha->iospace = 0;
66 	for (i = 0; i < 3; i += 2) {
67 		io_handle = &asd_ha->io_handle[i==0?0:1];
68 		io_handle->start = pci_resource_start(asd_ha->pcidev, i);
69 		io_handle->len   = pci_resource_len(asd_ha->pcidev, i);
70 		io_handle->flags = pci_resource_flags(asd_ha->pcidev, i);
71 		err = -ENODEV;
72 		if (!io_handle->start || !io_handle->len) {
73 			asd_printk("MBAR%d start or length for %s is 0.\n",
74 				   i==0?0:1, pci_name(asd_ha->pcidev));
75 			goto Err;
76 		}
77 		err = pci_request_region(asd_ha->pcidev, i, ASD_DRIVER_NAME);
78 		if (err) {
79 			asd_printk("couldn't reserve memory region for %s\n",
80 				   pci_name(asd_ha->pcidev));
81 			goto Err;
82 		}
83 		io_handle->addr = ioremap(io_handle->start, io_handle->len);
84 		if (!io_handle->addr) {
85 			asd_printk("couldn't map MBAR%d of %s\n", i==0?0:1,
86 				   pci_name(asd_ha->pcidev));
87 			err = -ENOMEM;
88 			goto Err_unreq;
89 		}
90 	}
91 
92 	return 0;
93 Err_unreq:
94 	pci_release_region(asd_ha->pcidev, i);
95 Err:
96 	if (i > 0) {
97 		io_handle = &asd_ha->io_handle[0];
98 		iounmap(io_handle->addr);
99 		pci_release_region(asd_ha->pcidev, 0);
100 	}
101 	return err;
102 }
103 
104 static void asd_unmap_memio(struct asd_ha_struct *asd_ha)
105 {
106 	struct asd_ha_addrspace *io_handle;
107 
108 	io_handle = &asd_ha->io_handle[1];
109 	iounmap(io_handle->addr);
110 	pci_release_region(asd_ha->pcidev, 2);
111 
112 	io_handle = &asd_ha->io_handle[0];
113 	iounmap(io_handle->addr);
114 	pci_release_region(asd_ha->pcidev, 0);
115 }
116 
117 static int asd_map_ioport(struct asd_ha_struct *asd_ha)
118 {
119 	int i = PCI_IOBAR_OFFSET, err;
120 	struct asd_ha_addrspace *io_handle = &asd_ha->io_handle[0];
121 
122 	asd_ha->iospace = 1;
123 	io_handle->start = pci_resource_start(asd_ha->pcidev, i);
124 	io_handle->len   = pci_resource_len(asd_ha->pcidev, i);
125 	io_handle->flags = pci_resource_flags(asd_ha->pcidev, i);
126 	io_handle->addr  = (void __iomem *) io_handle->start;
127 	if (!io_handle->start || !io_handle->len) {
128 		asd_printk("couldn't get IO ports for %s\n",
129 			   pci_name(asd_ha->pcidev));
130 		return -ENODEV;
131 	}
132 	err = pci_request_region(asd_ha->pcidev, i, ASD_DRIVER_NAME);
133 	if (err) {
134 		asd_printk("couldn't reserve io space for %s\n",
135 			   pci_name(asd_ha->pcidev));
136 	}
137 
138 	return err;
139 }
140 
141 static void asd_unmap_ioport(struct asd_ha_struct *asd_ha)
142 {
143 	pci_release_region(asd_ha->pcidev, PCI_IOBAR_OFFSET);
144 }
145 
146 static int asd_map_ha(struct asd_ha_struct *asd_ha)
147 {
148 	int err;
149 	u16 cmd_reg;
150 
151 	err = pci_read_config_word(asd_ha->pcidev, PCI_COMMAND, &cmd_reg);
152 	if (err) {
153 		asd_printk("couldn't read command register of %s\n",
154 			   pci_name(asd_ha->pcidev));
155 		goto Err;
156 	}
157 
158 	err = -ENODEV;
159 	if (cmd_reg & PCI_COMMAND_MEMORY) {
160 		if ((err = asd_map_memio(asd_ha)))
161 			goto Err;
162 	} else if (cmd_reg & PCI_COMMAND_IO) {
163 		if ((err = asd_map_ioport(asd_ha)))
164 			goto Err;
165 		asd_printk("%s ioport mapped -- upgrade your hardware\n",
166 			   pci_name(asd_ha->pcidev));
167 	} else {
168 		asd_printk("no proper device access to %s\n",
169 			   pci_name(asd_ha->pcidev));
170 		goto Err;
171 	}
172 
173 	return 0;
174 Err:
175 	return err;
176 }
177 
178 static void asd_unmap_ha(struct asd_ha_struct *asd_ha)
179 {
180 	if (asd_ha->iospace)
181 		asd_unmap_ioport(asd_ha);
182 	else
183 		asd_unmap_memio(asd_ha);
184 }
185 
186 static const char *asd_dev_rev[30] = {
187 	[0] = "A0",
188 	[1] = "A1",
189 	[8] = "B0",
190 };
191 
192 static int asd_common_setup(struct asd_ha_struct *asd_ha)
193 {
194 	int err, i;
195 
196 	asd_ha->revision_id = asd_ha->pcidev->revision;
197 
198 	err = -ENODEV;
199 	if (asd_ha->revision_id < AIC9410_DEV_REV_B0) {
200 		asd_printk("%s is revision %s (%X), which is not supported\n",
201 			   pci_name(asd_ha->pcidev),
202 			   asd_dev_rev[asd_ha->revision_id],
203 			   asd_ha->revision_id);
204 		goto Err;
205 	}
206 	/* Provide some sane default values. */
207 	asd_ha->hw_prof.max_scbs = 512;
208 	asd_ha->hw_prof.max_ddbs = ASD_MAX_DDBS;
209 	asd_ha->hw_prof.num_phys = ASD_MAX_PHYS;
210 	/* All phys are enabled, by default. */
211 	asd_ha->hw_prof.enabled_phys = 0xFF;
212 	for (i = 0; i < ASD_MAX_PHYS; i++) {
213 		asd_ha->hw_prof.phy_desc[i].max_sas_lrate =
214 			SAS_LINK_RATE_3_0_GBPS;
215 		asd_ha->hw_prof.phy_desc[i].min_sas_lrate =
216 			SAS_LINK_RATE_1_5_GBPS;
217 		asd_ha->hw_prof.phy_desc[i].max_sata_lrate =
218 			SAS_LINK_RATE_1_5_GBPS;
219 		asd_ha->hw_prof.phy_desc[i].min_sata_lrate =
220 			SAS_LINK_RATE_1_5_GBPS;
221 	}
222 
223 	return 0;
224 Err:
225 	return err;
226 }
227 
228 static int asd_aic9410_setup(struct asd_ha_struct *asd_ha)
229 {
230 	int err = asd_common_setup(asd_ha);
231 
232 	if (err)
233 		return err;
234 
235 	asd_ha->hw_prof.addr_range = 8;
236 	asd_ha->hw_prof.port_name_base = 0;
237 	asd_ha->hw_prof.dev_name_base = 8;
238 	asd_ha->hw_prof.sata_name_base = 16;
239 
240 	return 0;
241 }
242 
243 static int asd_aic9405_setup(struct asd_ha_struct *asd_ha)
244 {
245 	int err = asd_common_setup(asd_ha);
246 
247 	if (err)
248 		return err;
249 
250 	asd_ha->hw_prof.addr_range = 4;
251 	asd_ha->hw_prof.port_name_base = 0;
252 	asd_ha->hw_prof.dev_name_base = 4;
253 	asd_ha->hw_prof.sata_name_base = 8;
254 
255 	return 0;
256 }
257 
258 static ssize_t asd_show_dev_rev(struct device *dev,
259 				struct device_attribute *attr, char *buf)
260 {
261 	struct asd_ha_struct *asd_ha = dev_to_asd_ha(dev);
262 	return snprintf(buf, PAGE_SIZE, "%s\n",
263 			asd_dev_rev[asd_ha->revision_id]);
264 }
265 static DEVICE_ATTR(aic_revision, S_IRUGO, asd_show_dev_rev, NULL);
266 
267 static ssize_t asd_show_dev_bios_build(struct device *dev,
268 				       struct device_attribute *attr,char *buf)
269 {
270 	struct asd_ha_struct *asd_ha = dev_to_asd_ha(dev);
271 	return snprintf(buf, PAGE_SIZE, "%d\n", asd_ha->hw_prof.bios.bld);
272 }
273 static DEVICE_ATTR(bios_build, S_IRUGO, asd_show_dev_bios_build, NULL);
274 
275 static ssize_t asd_show_dev_pcba_sn(struct device *dev,
276 				    struct device_attribute *attr, char *buf)
277 {
278 	struct asd_ha_struct *asd_ha = dev_to_asd_ha(dev);
279 	return snprintf(buf, PAGE_SIZE, "%s\n", asd_ha->hw_prof.pcba_sn);
280 }
281 static DEVICE_ATTR(pcba_sn, S_IRUGO, asd_show_dev_pcba_sn, NULL);
282 
283 #define FLASH_CMD_NONE      0x00
284 #define FLASH_CMD_UPDATE    0x01
285 #define FLASH_CMD_VERIFY    0x02
286 
287 struct flash_command {
288      u8      command[8];
289      int     code;
290 };
291 
292 static struct flash_command flash_command_table[] =
293 {
294      {"verify",      FLASH_CMD_VERIFY},
295      {"update",      FLASH_CMD_UPDATE},
296      {"",            FLASH_CMD_NONE}      /* Last entry should be NULL. */
297 };
298 
299 struct error_bios {
300      char    *reason;
301      int     err_code;
302 };
303 
304 static struct error_bios flash_error_table[] =
305 {
306      {"Failed to open bios image file",      FAIL_OPEN_BIOS_FILE},
307      {"PCI ID mismatch",                     FAIL_CHECK_PCI_ID},
308      {"Checksum mismatch",                   FAIL_CHECK_SUM},
309      {"Unknown Error",                       FAIL_UNKNOWN},
310      {"Failed to verify.",                   FAIL_VERIFY},
311      {"Failed to reset flash chip.",         FAIL_RESET_FLASH},
312      {"Failed to find flash chip type.",     FAIL_FIND_FLASH_ID},
313      {"Failed to erash flash chip.",         FAIL_ERASE_FLASH},
314      {"Failed to program flash chip.",       FAIL_WRITE_FLASH},
315      {"Flash in progress",                   FLASH_IN_PROGRESS},
316      {"Image file size Error",               FAIL_FILE_SIZE},
317      {"Input parameter error",               FAIL_PARAMETERS},
318      {"Out of memory",                       FAIL_OUT_MEMORY},
319      {"OK", 0}	/* Last entry err_code = 0. */
320 };
321 
322 static ssize_t asd_store_update_bios(struct device *dev,
323 	struct device_attribute *attr,
324 	const char *buf, size_t count)
325 {
326 	struct asd_ha_struct *asd_ha = dev_to_asd_ha(dev);
327 	char *cmd_ptr, *filename_ptr;
328 	struct bios_file_header header, *hdr_ptr;
329 	int res, i;
330 	u32 csum = 0;
331 	int flash_command = FLASH_CMD_NONE;
332 	int err = 0;
333 
334 	cmd_ptr = kcalloc(count, 2, GFP_KERNEL);
335 
336 	if (!cmd_ptr) {
337 		err = FAIL_OUT_MEMORY;
338 		goto out;
339 	}
340 
341 	filename_ptr = cmd_ptr + count;
342 	res = sscanf(buf, "%s %s", cmd_ptr, filename_ptr);
343 	if (res != 2) {
344 		err = FAIL_PARAMETERS;
345 		goto out1;
346 	}
347 
348 	for (i = 0; flash_command_table[i].code != FLASH_CMD_NONE; i++) {
349 		if (!memcmp(flash_command_table[i].command,
350 				 cmd_ptr, strlen(cmd_ptr))) {
351 			flash_command = flash_command_table[i].code;
352 			break;
353 		}
354 	}
355 	if (flash_command == FLASH_CMD_NONE) {
356 		err = FAIL_PARAMETERS;
357 		goto out1;
358 	}
359 
360 	if (asd_ha->bios_status == FLASH_IN_PROGRESS) {
361 		err = FLASH_IN_PROGRESS;
362 		goto out1;
363 	}
364 	err = request_firmware(&asd_ha->bios_image,
365 				   filename_ptr,
366 				   &asd_ha->pcidev->dev);
367 	if (err) {
368 		asd_printk("Failed to load bios image file %s, error %d\n",
369 			   filename_ptr, err);
370 		err = FAIL_OPEN_BIOS_FILE;
371 		goto out1;
372 	}
373 
374 	hdr_ptr = (struct bios_file_header *)asd_ha->bios_image->data;
375 
376 	if ((hdr_ptr->contrl_id.vendor != asd_ha->pcidev->vendor ||
377 		hdr_ptr->contrl_id.device != asd_ha->pcidev->device) &&
378 		(hdr_ptr->contrl_id.sub_vendor != asd_ha->pcidev->vendor ||
379 		hdr_ptr->contrl_id.sub_device != asd_ha->pcidev->device)) {
380 
381 		ASD_DPRINTK("The PCI vendor or device id does not match\n");
382 		ASD_DPRINTK("vendor=%x dev=%x sub_vendor=%x sub_dev=%x"
383 		" pci vendor=%x pci dev=%x\n",
384 		hdr_ptr->contrl_id.vendor,
385 		hdr_ptr->contrl_id.device,
386 		hdr_ptr->contrl_id.sub_vendor,
387 		hdr_ptr->contrl_id.sub_device,
388 		asd_ha->pcidev->vendor,
389 		asd_ha->pcidev->device);
390 		err = FAIL_CHECK_PCI_ID;
391 		goto out2;
392 	}
393 
394 	if (hdr_ptr->filelen != asd_ha->bios_image->size) {
395 		err = FAIL_FILE_SIZE;
396 		goto out2;
397 	}
398 
399 	/* calculate checksum */
400 	for (i = 0; i < hdr_ptr->filelen; i++)
401 		csum += asd_ha->bios_image->data[i];
402 
403 	if ((csum & 0x0000ffff) != hdr_ptr->checksum) {
404 		ASD_DPRINTK("BIOS file checksum mismatch\n");
405 		err = FAIL_CHECK_SUM;
406 		goto out2;
407 	}
408 	if (flash_command == FLASH_CMD_UPDATE) {
409 		asd_ha->bios_status = FLASH_IN_PROGRESS;
410 		err = asd_write_flash_seg(asd_ha,
411 			&asd_ha->bios_image->data[sizeof(*hdr_ptr)],
412 			0, hdr_ptr->filelen-sizeof(*hdr_ptr));
413 		if (!err)
414 			err = asd_verify_flash_seg(asd_ha,
415 				&asd_ha->bios_image->data[sizeof(*hdr_ptr)],
416 				0, hdr_ptr->filelen-sizeof(*hdr_ptr));
417 	} else {
418 		asd_ha->bios_status = FLASH_IN_PROGRESS;
419 		err = asd_verify_flash_seg(asd_ha,
420 			&asd_ha->bios_image->data[sizeof(header)],
421 			0, hdr_ptr->filelen-sizeof(header));
422 	}
423 
424 out2:
425 	release_firmware(asd_ha->bios_image);
426 out1:
427 	kfree(cmd_ptr);
428 out:
429 	asd_ha->bios_status = err;
430 
431 	if (!err)
432 		return count;
433 	else
434 		return -err;
435 }
436 
437 static ssize_t asd_show_update_bios(struct device *dev,
438 				    struct device_attribute *attr, char *buf)
439 {
440 	int i;
441 	struct asd_ha_struct *asd_ha = dev_to_asd_ha(dev);
442 
443 	for (i = 0; flash_error_table[i].err_code != 0; i++) {
444 		if (flash_error_table[i].err_code == asd_ha->bios_status)
445 			break;
446 	}
447 	if (asd_ha->bios_status != FLASH_IN_PROGRESS)
448 		asd_ha->bios_status = FLASH_OK;
449 
450 	return snprintf(buf, PAGE_SIZE, "status=%x %s\n",
451 			flash_error_table[i].err_code,
452 			flash_error_table[i].reason);
453 }
454 
455 static DEVICE_ATTR(update_bios, S_IRUGO|S_IWUSR,
456 	asd_show_update_bios, asd_store_update_bios);
457 
458 static int asd_create_dev_attrs(struct asd_ha_struct *asd_ha)
459 {
460 	int err;
461 
462 	err = device_create_file(&asd_ha->pcidev->dev, &dev_attr_aic_revision);
463 	if (err)
464 		return err;
465 
466 	err = device_create_file(&asd_ha->pcidev->dev, &dev_attr_bios_build);
467 	if (err)
468 		goto err_rev;
469 
470 	err = device_create_file(&asd_ha->pcidev->dev, &dev_attr_pcba_sn);
471 	if (err)
472 		goto err_biosb;
473 	err = device_create_file(&asd_ha->pcidev->dev, &dev_attr_update_bios);
474 	if (err)
475 		goto err_update_bios;
476 
477 	return 0;
478 
479 err_update_bios:
480 	device_remove_file(&asd_ha->pcidev->dev, &dev_attr_pcba_sn);
481 err_biosb:
482 	device_remove_file(&asd_ha->pcidev->dev, &dev_attr_bios_build);
483 err_rev:
484 	device_remove_file(&asd_ha->pcidev->dev, &dev_attr_aic_revision);
485 	return err;
486 }
487 
488 static void asd_remove_dev_attrs(struct asd_ha_struct *asd_ha)
489 {
490 	device_remove_file(&asd_ha->pcidev->dev, &dev_attr_aic_revision);
491 	device_remove_file(&asd_ha->pcidev->dev, &dev_attr_bios_build);
492 	device_remove_file(&asd_ha->pcidev->dev, &dev_attr_pcba_sn);
493 	device_remove_file(&asd_ha->pcidev->dev, &dev_attr_update_bios);
494 }
495 
496 /* The first entry, 0, is used for dynamic ids, the rest for devices
497  * we know about.
498  */
499 static const struct asd_pcidev_struct {
500 	const char * name;
501 	int (*setup)(struct asd_ha_struct *asd_ha);
502 } asd_pcidev_data[] = {
503 	/* Id 0 is used for dynamic ids. */
504 	{ .name  = "Adaptec AIC-94xx SAS/SATA Host Adapter",
505 	  .setup = asd_aic9410_setup
506 	},
507 	{ .name  = "Adaptec AIC-9410W SAS/SATA Host Adapter",
508 	  .setup = asd_aic9410_setup
509 	},
510 	{ .name  = "Adaptec AIC-9405W SAS/SATA Host Adapter",
511 	  .setup = asd_aic9405_setup
512 	},
513 };
514 
515 static int asd_create_ha_caches(struct asd_ha_struct *asd_ha)
516 {
517 	asd_ha->scb_pool = dma_pool_create(ASD_DRIVER_NAME "_scb_pool",
518 					   &asd_ha->pcidev->dev,
519 					   sizeof(struct scb),
520 					   8, 0);
521 	if (!asd_ha->scb_pool) {
522 		asd_printk("couldn't create scb pool\n");
523 		return -ENOMEM;
524 	}
525 
526 	return 0;
527 }
528 
529 /**
530  * asd_free_edbs -- free empty data buffers
531  * asd_ha: pointer to host adapter structure
532  */
533 static void asd_free_edbs(struct asd_ha_struct *asd_ha)
534 {
535 	struct asd_seq_data *seq = &asd_ha->seq;
536 	int i;
537 
538 	for (i = 0; i < seq->num_edbs; i++)
539 		asd_free_coherent(asd_ha, seq->edb_arr[i]);
540 	kfree(seq->edb_arr);
541 	seq->edb_arr = NULL;
542 }
543 
544 static void asd_free_escbs(struct asd_ha_struct *asd_ha)
545 {
546 	struct asd_seq_data *seq = &asd_ha->seq;
547 	int i;
548 
549 	for (i = 0; i < seq->num_escbs; i++) {
550 		if (!list_empty(&seq->escb_arr[i]->list))
551 			list_del_init(&seq->escb_arr[i]->list);
552 
553 		asd_ascb_free(seq->escb_arr[i]);
554 	}
555 	kfree(seq->escb_arr);
556 	seq->escb_arr = NULL;
557 }
558 
559 static void asd_destroy_ha_caches(struct asd_ha_struct *asd_ha)
560 {
561 	int i;
562 
563 	if (asd_ha->hw_prof.ddb_ext)
564 		asd_free_coherent(asd_ha, asd_ha->hw_prof.ddb_ext);
565 	if (asd_ha->hw_prof.scb_ext)
566 		asd_free_coherent(asd_ha, asd_ha->hw_prof.scb_ext);
567 
568 	if (asd_ha->hw_prof.ddb_bitmap)
569 		kfree(asd_ha->hw_prof.ddb_bitmap);
570 	asd_ha->hw_prof.ddb_bitmap = NULL;
571 
572 	for (i = 0; i < ASD_MAX_PHYS; i++) {
573 		struct asd_phy *phy = &asd_ha->phys[i];
574 
575 		asd_free_coherent(asd_ha, phy->id_frm_tok);
576 	}
577 	if (asd_ha->seq.escb_arr)
578 		asd_free_escbs(asd_ha);
579 	if (asd_ha->seq.edb_arr)
580 		asd_free_edbs(asd_ha);
581 	if (asd_ha->hw_prof.ue.area) {
582 		kfree(asd_ha->hw_prof.ue.area);
583 		asd_ha->hw_prof.ue.area = NULL;
584 	}
585 	if (asd_ha->seq.tc_index_array) {
586 		kfree(asd_ha->seq.tc_index_array);
587 		kfree(asd_ha->seq.tc_index_bitmap);
588 		asd_ha->seq.tc_index_array = NULL;
589 		asd_ha->seq.tc_index_bitmap = NULL;
590 	}
591 	if (asd_ha->seq.actual_dl) {
592 			asd_free_coherent(asd_ha, asd_ha->seq.actual_dl);
593 			asd_ha->seq.actual_dl = NULL;
594 			asd_ha->seq.dl = NULL;
595 	}
596 	if (asd_ha->seq.next_scb.vaddr) {
597 		dma_pool_free(asd_ha->scb_pool, asd_ha->seq.next_scb.vaddr,
598 			      asd_ha->seq.next_scb.dma_handle);
599 		asd_ha->seq.next_scb.vaddr = NULL;
600 	}
601 	dma_pool_destroy(asd_ha->scb_pool);
602 	asd_ha->scb_pool = NULL;
603 }
604 
605 struct kmem_cache *asd_dma_token_cache;
606 struct kmem_cache *asd_ascb_cache;
607 
608 static int asd_create_global_caches(void)
609 {
610 	if (!asd_dma_token_cache) {
611 		asd_dma_token_cache
612 			= kmem_cache_create(ASD_DRIVER_NAME "_dma_token",
613 					    sizeof(struct asd_dma_tok),
614 					    0,
615 					    SLAB_HWCACHE_ALIGN,
616 					    NULL);
617 		if (!asd_dma_token_cache) {
618 			asd_printk("couldn't create dma token cache\n");
619 			return -ENOMEM;
620 		}
621 	}
622 
623 	if (!asd_ascb_cache) {
624 		asd_ascb_cache = kmem_cache_create(ASD_DRIVER_NAME "_ascb",
625 						   sizeof(struct asd_ascb),
626 						   0,
627 						   SLAB_HWCACHE_ALIGN,
628 						   NULL);
629 		if (!asd_ascb_cache) {
630 			asd_printk("couldn't create ascb cache\n");
631 			goto Err;
632 		}
633 	}
634 
635 	return 0;
636 Err:
637 	kmem_cache_destroy(asd_dma_token_cache);
638 	asd_dma_token_cache = NULL;
639 	return -ENOMEM;
640 }
641 
642 static void asd_destroy_global_caches(void)
643 {
644 	if (asd_dma_token_cache)
645 		kmem_cache_destroy(asd_dma_token_cache);
646 	asd_dma_token_cache = NULL;
647 
648 	if (asd_ascb_cache)
649 		kmem_cache_destroy(asd_ascb_cache);
650 	asd_ascb_cache = NULL;
651 }
652 
653 static int asd_register_sas_ha(struct asd_ha_struct *asd_ha)
654 {
655 	int i;
656 	struct asd_sas_phy   **sas_phys =
657 		kcalloc(ASD_MAX_PHYS, sizeof(*sas_phys), GFP_KERNEL);
658 	struct asd_sas_port  **sas_ports =
659 		kcalloc(ASD_MAX_PHYS, sizeof(*sas_ports), GFP_KERNEL);
660 
661 	if (!sas_phys || !sas_ports) {
662 		kfree(sas_phys);
663 		kfree(sas_ports);
664 		return -ENOMEM;
665 	}
666 
667 	asd_ha->sas_ha.sas_ha_name = (char *) asd_ha->name;
668 	asd_ha->sas_ha.lldd_module = THIS_MODULE;
669 	asd_ha->sas_ha.sas_addr = &asd_ha->hw_prof.sas_addr[0];
670 
671 	for (i = 0; i < ASD_MAX_PHYS; i++) {
672 		sas_phys[i] = &asd_ha->phys[i].sas_phy;
673 		sas_ports[i] = &asd_ha->ports[i];
674 	}
675 
676 	asd_ha->sas_ha.sas_phy = sas_phys;
677 	asd_ha->sas_ha.sas_port= sas_ports;
678 	asd_ha->sas_ha.num_phys= ASD_MAX_PHYS;
679 
680 	return sas_register_ha(&asd_ha->sas_ha);
681 }
682 
683 static int asd_unregister_sas_ha(struct asd_ha_struct *asd_ha)
684 {
685 	int err;
686 
687 	err = sas_unregister_ha(&asd_ha->sas_ha);
688 
689 	sas_remove_host(asd_ha->sas_ha.core.shost);
690 	scsi_host_put(asd_ha->sas_ha.core.shost);
691 
692 	kfree(asd_ha->sas_ha.sas_phy);
693 	kfree(asd_ha->sas_ha.sas_port);
694 
695 	return err;
696 }
697 
698 static int asd_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
699 {
700 	const struct asd_pcidev_struct *asd_dev;
701 	unsigned asd_id = (unsigned) id->driver_data;
702 	struct asd_ha_struct *asd_ha;
703 	struct Scsi_Host *shost;
704 	int err;
705 
706 	if (asd_id >= ARRAY_SIZE(asd_pcidev_data)) {
707 		asd_printk("wrong driver_data in PCI table\n");
708 		return -ENODEV;
709 	}
710 
711 	if ((err = pci_enable_device(dev))) {
712 		asd_printk("couldn't enable device %s\n", pci_name(dev));
713 		return err;
714 	}
715 
716 	pci_set_master(dev);
717 
718 	err = -ENOMEM;
719 
720 	shost = scsi_host_alloc(&aic94xx_sht, sizeof(void *));
721 	if (!shost)
722 		goto Err;
723 
724 	asd_dev = &asd_pcidev_data[asd_id];
725 
726 	asd_ha = kzalloc(sizeof(*asd_ha), GFP_KERNEL);
727 	if (!asd_ha) {
728 		asd_printk("out of memory\n");
729 		goto Err_put;
730 	}
731 	asd_ha->pcidev = dev;
732 	asd_ha->sas_ha.dev = &asd_ha->pcidev->dev;
733 	asd_ha->sas_ha.lldd_ha = asd_ha;
734 
735 	asd_ha->bios_status = FLASH_OK;
736 	asd_ha->name = asd_dev->name;
737 	asd_printk("found %s, device %s\n", asd_ha->name, pci_name(dev));
738 
739 	SHOST_TO_SAS_HA(shost) = &asd_ha->sas_ha;
740 	asd_ha->sas_ha.core.shost = shost;
741 	shost->transportt = aic94xx_transport_template;
742 	shost->max_id = ~0;
743 	shost->max_lun = ~0;
744 	shost->max_cmd_len = 16;
745 
746 	err = scsi_add_host(shost, &dev->dev);
747 	if (err)
748 		goto Err_free;
749 
750 	err = asd_dev->setup(asd_ha);
751 	if (err)
752 		goto Err_remove;
753 
754 	err = dma_set_mask_and_coherent(&dev->dev, DMA_BIT_MASK(64));
755 	if (err)
756 		err = dma_set_mask_and_coherent(&dev->dev, DMA_BIT_MASK(32));
757 	if (err) {
758 		err = -ENODEV;
759 		asd_printk("no suitable DMA mask for %s\n", pci_name(dev));
760 		goto Err_remove;
761 	}
762 
763 	pci_set_drvdata(dev, asd_ha);
764 
765 	err = asd_map_ha(asd_ha);
766 	if (err)
767 		goto Err_remove;
768 
769 	err = asd_create_ha_caches(asd_ha);
770         if (err)
771 		goto Err_unmap;
772 
773 	err = asd_init_hw(asd_ha);
774 	if (err)
775 		goto Err_free_cache;
776 
777 	asd_printk("device %s: SAS addr %llx, PCBA SN %s, %d phys, %d enabled "
778 		   "phys, flash %s, BIOS %s%d\n",
779 		   pci_name(dev), SAS_ADDR(asd_ha->hw_prof.sas_addr),
780 		   asd_ha->hw_prof.pcba_sn, asd_ha->hw_prof.max_phys,
781 		   asd_ha->hw_prof.num_phys,
782 		   asd_ha->hw_prof.flash.present ? "present" : "not present",
783 		   asd_ha->hw_prof.bios.present ? "build " : "not present",
784 		   asd_ha->hw_prof.bios.bld);
785 
786 	shost->can_queue = asd_ha->seq.can_queue;
787 
788 	if (use_msi)
789 		pci_enable_msi(asd_ha->pcidev);
790 
791 	err = request_irq(asd_ha->pcidev->irq, asd_hw_isr, IRQF_SHARED,
792 			  ASD_DRIVER_NAME, asd_ha);
793 	if (err) {
794 		asd_printk("couldn't get irq %d for %s\n",
795 			   asd_ha->pcidev->irq, pci_name(asd_ha->pcidev));
796 		goto Err_irq;
797 	}
798 	asd_enable_ints(asd_ha);
799 
800 	err = asd_init_post_escbs(asd_ha);
801 	if (err) {
802 		asd_printk("couldn't post escbs for %s\n",
803 			   pci_name(asd_ha->pcidev));
804 		goto Err_escbs;
805 	}
806 	ASD_DPRINTK("escbs posted\n");
807 
808 	err = asd_create_dev_attrs(asd_ha);
809 	if (err)
810 		goto Err_dev_attrs;
811 
812 	err = asd_register_sas_ha(asd_ha);
813 	if (err)
814 		goto Err_reg_sas;
815 
816 	scsi_scan_host(shost);
817 
818 	return 0;
819 
820 Err_reg_sas:
821 	asd_remove_dev_attrs(asd_ha);
822 Err_dev_attrs:
823 Err_escbs:
824 	asd_disable_ints(asd_ha);
825 	free_irq(dev->irq, asd_ha);
826 Err_irq:
827 	if (use_msi)
828 		pci_disable_msi(dev);
829 	asd_chip_hardrst(asd_ha);
830 Err_free_cache:
831 	asd_destroy_ha_caches(asd_ha);
832 Err_unmap:
833 	asd_unmap_ha(asd_ha);
834 Err_remove:
835 	scsi_remove_host(shost);
836 Err_free:
837 	kfree(asd_ha);
838 Err_put:
839 	scsi_host_put(shost);
840 Err:
841 	pci_disable_device(dev);
842 	return err;
843 }
844 
845 static void asd_free_queues(struct asd_ha_struct *asd_ha)
846 {
847 	unsigned long flags;
848 	LIST_HEAD(pending);
849 	struct list_head *n, *pos;
850 
851 	spin_lock_irqsave(&asd_ha->seq.pend_q_lock, flags);
852 	asd_ha->seq.pending = 0;
853 	list_splice_init(&asd_ha->seq.pend_q, &pending);
854 	spin_unlock_irqrestore(&asd_ha->seq.pend_q_lock, flags);
855 
856 	if (!list_empty(&pending))
857 		ASD_DPRINTK("Uh-oh! Pending is not empty!\n");
858 
859 	list_for_each_safe(pos, n, &pending) {
860 		struct asd_ascb *ascb = list_entry(pos, struct asd_ascb, list);
861 		/*
862 		 * Delete unexpired ascb timers.  This may happen if we issue
863 		 * a CONTROL PHY scb to an adapter and rmmod before the scb
864 		 * times out.  Apparently we don't wait for the CONTROL PHY
865 		 * to complete, so it doesn't matter if we kill the timer.
866 		 */
867 		del_timer_sync(&ascb->timer);
868 		WARN_ON(ascb->scb->header.opcode != CONTROL_PHY);
869 
870 		list_del_init(pos);
871 		ASD_DPRINTK("freeing from pending\n");
872 		asd_ascb_free(ascb);
873 	}
874 }
875 
876 static void asd_turn_off_leds(struct asd_ha_struct *asd_ha)
877 {
878 	u8 phy_mask = asd_ha->hw_prof.enabled_phys;
879 	u8 i;
880 
881 	for_each_phy(phy_mask, phy_mask, i) {
882 		asd_turn_led(asd_ha, i, 0);
883 		asd_control_led(asd_ha, i, 0);
884 	}
885 }
886 
887 static void asd_pci_remove(struct pci_dev *dev)
888 {
889 	struct asd_ha_struct *asd_ha = pci_get_drvdata(dev);
890 
891 	if (!asd_ha)
892 		return;
893 
894 	asd_unregister_sas_ha(asd_ha);
895 
896 	asd_disable_ints(asd_ha);
897 
898 	asd_remove_dev_attrs(asd_ha);
899 
900 	/* XXX more here as needed */
901 
902 	free_irq(dev->irq, asd_ha);
903 	if (use_msi)
904 		pci_disable_msi(asd_ha->pcidev);
905 	asd_turn_off_leds(asd_ha);
906 	asd_chip_hardrst(asd_ha);
907 	asd_free_queues(asd_ha);
908 	asd_destroy_ha_caches(asd_ha);
909 	asd_unmap_ha(asd_ha);
910 	kfree(asd_ha);
911 	pci_disable_device(dev);
912 	return;
913 }
914 
915 static void asd_scan_start(struct Scsi_Host *shost)
916 {
917 	struct asd_ha_struct *asd_ha;
918 	int err;
919 
920 	asd_ha = SHOST_TO_SAS_HA(shost)->lldd_ha;
921 	err = asd_enable_phys(asd_ha, asd_ha->hw_prof.enabled_phys);
922 	if (err)
923 		asd_printk("Couldn't enable phys, err:%d\n", err);
924 }
925 
926 static int asd_scan_finished(struct Scsi_Host *shost, unsigned long time)
927 {
928 	/* give the phy enabling interrupt event time to come in (1s
929 	 * is empirically about all it takes) */
930 	if (time < HZ)
931 		return 0;
932 	/* Wait for discovery to finish */
933 	sas_drain_work(SHOST_TO_SAS_HA(shost));
934 	return 1;
935 }
936 
937 static ssize_t version_show(struct device_driver *driver, char *buf)
938 {
939 	return snprintf(buf, PAGE_SIZE, "%s\n", ASD_DRIVER_VERSION);
940 }
941 static DRIVER_ATTR_RO(version);
942 
943 static int asd_create_driver_attrs(struct device_driver *driver)
944 {
945 	return driver_create_file(driver, &driver_attr_version);
946 }
947 
948 static void asd_remove_driver_attrs(struct device_driver *driver)
949 {
950 	driver_remove_file(driver, &driver_attr_version);
951 }
952 
953 static struct sas_domain_function_template aic94xx_transport_functions = {
954 	.lldd_dev_found		= asd_dev_found,
955 	.lldd_dev_gone		= asd_dev_gone,
956 
957 	.lldd_execute_task	= asd_execute_task,
958 
959 	.lldd_abort_task	= asd_abort_task,
960 	.lldd_abort_task_set	= asd_abort_task_set,
961 	.lldd_clear_aca		= asd_clear_aca,
962 	.lldd_clear_task_set	= asd_clear_task_set,
963 	.lldd_I_T_nexus_reset	= asd_I_T_nexus_reset,
964 	.lldd_lu_reset		= asd_lu_reset,
965 	.lldd_query_task	= asd_query_task,
966 
967 	.lldd_clear_nexus_port	= asd_clear_nexus_port,
968 	.lldd_clear_nexus_ha	= asd_clear_nexus_ha,
969 
970 	.lldd_control_phy	= asd_control_phy,
971 
972 	.lldd_ata_set_dmamode	= asd_set_dmamode,
973 };
974 
975 static const struct pci_device_id aic94xx_pci_table[] = {
976 	{PCI_DEVICE(PCI_VENDOR_ID_ADAPTEC2, 0x410),0, 0, 1},
977 	{PCI_DEVICE(PCI_VENDOR_ID_ADAPTEC2, 0x412),0, 0, 1},
978 	{PCI_DEVICE(PCI_VENDOR_ID_ADAPTEC2, 0x416),0, 0, 1},
979 	{PCI_DEVICE(PCI_VENDOR_ID_ADAPTEC2, 0x41E),0, 0, 1},
980 	{PCI_DEVICE(PCI_VENDOR_ID_ADAPTEC2, 0x41F),0, 0, 1},
981 	{PCI_DEVICE(PCI_VENDOR_ID_ADAPTEC2, 0x430),0, 0, 2},
982 	{PCI_DEVICE(PCI_VENDOR_ID_ADAPTEC2, 0x432),0, 0, 2},
983 	{PCI_DEVICE(PCI_VENDOR_ID_ADAPTEC2, 0x43E),0, 0, 2},
984 	{PCI_DEVICE(PCI_VENDOR_ID_ADAPTEC2, 0x43F),0, 0, 2},
985 	{}
986 };
987 
988 MODULE_DEVICE_TABLE(pci, aic94xx_pci_table);
989 
990 static struct pci_driver aic94xx_pci_driver = {
991 	.name		= ASD_DRIVER_NAME,
992 	.id_table	= aic94xx_pci_table,
993 	.probe		= asd_pci_probe,
994 	.remove		= asd_pci_remove,
995 };
996 
997 static int __init aic94xx_init(void)
998 {
999 	int err;
1000 
1001 
1002 	asd_printk("%s version %s loaded\n", ASD_DRIVER_DESCRIPTION,
1003 		   ASD_DRIVER_VERSION);
1004 
1005 	err = asd_create_global_caches();
1006 	if (err)
1007 		return err;
1008 
1009 	aic94xx_transport_template =
1010 		sas_domain_attach_transport(&aic94xx_transport_functions);
1011 	if (!aic94xx_transport_template) {
1012 		err = -ENOMEM;
1013 		goto out_destroy_caches;
1014 	}
1015 
1016 	err = pci_register_driver(&aic94xx_pci_driver);
1017 	if (err)
1018 		goto out_release_transport;
1019 
1020 	err = asd_create_driver_attrs(&aic94xx_pci_driver.driver);
1021 	if (err)
1022 		goto out_unregister_pcidrv;
1023 
1024 	return err;
1025 
1026  out_unregister_pcidrv:
1027 	pci_unregister_driver(&aic94xx_pci_driver);
1028  out_release_transport:
1029 	sas_release_transport(aic94xx_transport_template);
1030  out_destroy_caches:
1031 	asd_destroy_global_caches();
1032 
1033 	return err;
1034 }
1035 
1036 static void __exit aic94xx_exit(void)
1037 {
1038 	asd_remove_driver_attrs(&aic94xx_pci_driver.driver);
1039 	pci_unregister_driver(&aic94xx_pci_driver);
1040 	sas_release_transport(aic94xx_transport_template);
1041 	asd_release_firmware();
1042 	asd_destroy_global_caches();
1043 	asd_printk("%s version %s unloaded\n", ASD_DRIVER_DESCRIPTION,
1044 		   ASD_DRIVER_VERSION);
1045 }
1046 
1047 module_init(aic94xx_init);
1048 module_exit(aic94xx_exit);
1049 
1050 MODULE_AUTHOR("Luben Tuikov <luben_tuikov@adaptec.com>");
1051 MODULE_DESCRIPTION(ASD_DRIVER_DESCRIPTION);
1052 MODULE_LICENSE("GPL v2");
1053 MODULE_VERSION(ASD_DRIVER_VERSION);
1054