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Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001/*
Christoph Hellwiga0125642006-02-16 13:31:47 +01002 * Copyright (C) 2005-2006 Dell Inc.
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02003 * Released under GPL v2.
4 *
5 * Serial Attached SCSI (SAS) transport class.
6 *
7 * The SAS transport class contains common code to deal with SAS HBAs,
8 * an aproximated representation of SAS topologies in the driver model,
9 * and various sysfs attributes to expose these topologies and managment
10 * interfaces to userspace.
11 *
12 * In addition to the basic SCSI core objects this transport class
13 * introduces two additional intermediate objects: The SAS PHY
14 * as represented by struct sas_phy defines an "outgoing" PHY on
15 * a SAS HBA or Expander, and the SAS remote PHY represented by
16 * struct sas_rphy defines an "incoming" PHY on a SAS Expander or
17 * end device. Note that this is purely a software concept, the
18 * underlying hardware for a PHY and a remote PHY is the exactly
19 * the same.
20 *
21 * There is no concept of a SAS port in this code, users can see
22 * what PHYs form a wide port based on the port_identifier attribute,
23 * which is the same for all PHYs in a port.
24 */
25
26#include <linux/init.h>
27#include <linux/module.h>
Al Virof6a57032006-10-18 01:47:25 -040028#include <linux/jiffies.h>
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +020029#include <linux/err.h>
Tim Schmielau8c65b4a2005-11-07 00:59:43 -080030#include <linux/slab.h>
31#include <linux/string.h>
FUJITA Tomonori7aa68e82007-07-09 12:52:06 +090032#include <linux/blkdev.h>
33#include <linux/bsg.h>
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +020034
Christoph Hellwige02f3f52006-01-13 19:04:00 +010035#include <scsi/scsi.h>
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +020036#include <scsi/scsi_device.h>
37#include <scsi/scsi_host.h>
38#include <scsi/scsi_transport.h>
39#include <scsi/scsi_transport_sas.h>
40
James Bottomleyd6159c12006-03-27 16:45:34 -060041#include "scsi_sas_internal.h"
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +020042struct sas_host_attrs {
43 struct list_head rphy_list;
Christoph Hellwige02f3f52006-01-13 19:04:00 +010044 struct mutex lock;
James Bottomleyb6aff662007-07-20 11:10:05 -050045 struct request_queue *q;
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +020046 u32 next_target_id;
James Bottomley79cb1812006-03-13 13:50:04 -060047 u32 next_expander_id;
James Bottomleyc9fefeb2006-07-02 11:10:18 -050048 int next_port_id;
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +020049};
50#define to_sas_host_attrs(host) ((struct sas_host_attrs *)(host)->shost_data)
51
52
53/*
54 * Hack to allow attributes of the same name in different objects.
55 */
56#define SAS_CLASS_DEVICE_ATTR(_prefix,_name,_mode,_show,_store) \
57 struct class_device_attribute class_device_attr_##_prefix##_##_name = \
58 __ATTR(_name,_mode,_show,_store)
59
60
61/*
62 * Pretty printing helpers
63 */
64
65#define sas_bitfield_name_match(title, table) \
66static ssize_t \
67get_sas_##title##_names(u32 table_key, char *buf) \
68{ \
69 char *prefix = ""; \
70 ssize_t len = 0; \
71 int i; \
72 \
Tobias Klauser6391a112006-06-08 22:23:48 -070073 for (i = 0; i < ARRAY_SIZE(table); i++) { \
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +020074 if (table[i].value & table_key) { \
75 len += sprintf(buf + len, "%s%s", \
76 prefix, table[i].name); \
77 prefix = ", "; \
78 } \
79 } \
80 len += sprintf(buf + len, "\n"); \
81 return len; \
82}
83
James Bottomleyd24e1ee2006-09-06 19:25:22 -050084#define sas_bitfield_name_set(title, table) \
85static ssize_t \
86set_sas_##title##_names(u32 *table_key, const char *buf) \
87{ \
88 ssize_t len = 0; \
89 int i; \
90 \
91 for (i = 0; i < ARRAY_SIZE(table); i++) { \
92 len = strlen(table[i].name); \
93 if (strncmp(buf, table[i].name, len) == 0 && \
94 (buf[len] == '\n' || buf[len] == '\0')) { \
95 *table_key = table[i].value; \
96 return 0; \
97 } \
98 } \
99 return -EINVAL; \
100}
101
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200102#define sas_bitfield_name_search(title, table) \
103static ssize_t \
104get_sas_##title##_names(u32 table_key, char *buf) \
105{ \
106 ssize_t len = 0; \
107 int i; \
108 \
Tobias Klauser6391a112006-06-08 22:23:48 -0700109 for (i = 0; i < ARRAY_SIZE(table); i++) { \
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200110 if (table[i].value == table_key) { \
111 len += sprintf(buf + len, "%s", \
112 table[i].name); \
113 break; \
114 } \
115 } \
116 len += sprintf(buf + len, "\n"); \
117 return len; \
118}
119
120static struct {
121 u32 value;
122 char *name;
123} sas_device_type_names[] = {
124 { SAS_PHY_UNUSED, "unused" },
125 { SAS_END_DEVICE, "end device" },
126 { SAS_EDGE_EXPANDER_DEVICE, "edge expander" },
127 { SAS_FANOUT_EXPANDER_DEVICE, "fanout expander" },
128};
129sas_bitfield_name_search(device_type, sas_device_type_names)
130
131
132static struct {
133 u32 value;
134 char *name;
135} sas_protocol_names[] = {
136 { SAS_PROTOCOL_SATA, "sata" },
137 { SAS_PROTOCOL_SMP, "smp" },
138 { SAS_PROTOCOL_STP, "stp" },
139 { SAS_PROTOCOL_SSP, "ssp" },
140};
141sas_bitfield_name_match(protocol, sas_protocol_names)
142
143static struct {
144 u32 value;
145 char *name;
146} sas_linkspeed_names[] = {
147 { SAS_LINK_RATE_UNKNOWN, "Unknown" },
148 { SAS_PHY_DISABLED, "Phy disabled" },
149 { SAS_LINK_RATE_FAILED, "Link Rate failed" },
150 { SAS_SATA_SPINUP_HOLD, "Spin-up hold" },
151 { SAS_LINK_RATE_1_5_GBPS, "1.5 Gbit" },
152 { SAS_LINK_RATE_3_0_GBPS, "3.0 Gbit" },
James Bottomley7e6dff62006-03-02 14:12:56 -0600153 { SAS_LINK_RATE_6_0_GBPS, "6.0 Gbit" },
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200154};
155sas_bitfield_name_search(linkspeed, sas_linkspeed_names)
James Bottomleyd24e1ee2006-09-06 19:25:22 -0500156sas_bitfield_name_set(linkspeed, sas_linkspeed_names)
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200157
FUJITA Tomonori7aa68e82007-07-09 12:52:06 +0900158static void sas_smp_request(struct request_queue *q, struct Scsi_Host *shost,
159 struct sas_rphy *rphy)
160{
161 struct request *req;
162 int ret;
163 int (*handler)(struct Scsi_Host *, struct sas_rphy *, struct request *);
164
165 while (!blk_queue_plugged(q)) {
166 req = elv_next_request(q);
167 if (!req)
168 break;
169
170 blkdev_dequeue_request(req);
171
172 spin_unlock_irq(q->queue_lock);
173
174 handler = to_sas_internal(shost->transportt)->f->smp_handler;
175 ret = handler(shost, rphy, req);
176
177 spin_lock_irq(q->queue_lock);
178
179 req->end_io(req, ret);
180 }
181}
182
183static void sas_host_smp_request(struct request_queue *q)
184{
185 sas_smp_request(q, (struct Scsi_Host *)q->queuedata, NULL);
186}
187
188static void sas_non_host_smp_request(struct request_queue *q)
189{
190 struct sas_rphy *rphy = q->queuedata;
191 sas_smp_request(q, rphy_to_shost(rphy), rphy);
192}
193
James Bottomley39dca552007-07-20 18:22:17 -0500194static int sas_bsg_initialize(struct Scsi_Host *shost, struct sas_rphy *rphy)
FUJITA Tomonori7aa68e82007-07-09 12:52:06 +0900195{
196 struct request_queue *q;
197 int error;
James Bottomley39dca552007-07-20 18:22:17 -0500198 struct device *dev;
199 char namebuf[BUS_ID_SIZE];
200 const char *name;
FUJITA Tomonori7aa68e82007-07-09 12:52:06 +0900201
202 if (!to_sas_internal(shost->transportt)->f->smp_handler) {
203 printk("%s can't handle SMP requests\n", shost->hostt->name);
204 return 0;
205 }
206
James Bottomley39dca552007-07-20 18:22:17 -0500207 if (rphy) {
FUJITA Tomonori7aa68e82007-07-09 12:52:06 +0900208 q = blk_init_queue(sas_non_host_smp_request, NULL);
James Bottomley39dca552007-07-20 18:22:17 -0500209 dev = &rphy->dev;
210 name = dev->bus_id;
211 } else {
FUJITA Tomonori7aa68e82007-07-09 12:52:06 +0900212 q = blk_init_queue(sas_host_smp_request, NULL);
James Bottomley39dca552007-07-20 18:22:17 -0500213 dev = &shost->shost_gendev;
214 snprintf(namebuf, sizeof(namebuf),
215 "sas_host%d", shost->host_no);
216 name = namebuf;
217 }
FUJITA Tomonori7aa68e82007-07-09 12:52:06 +0900218 if (!q)
219 return -ENOMEM;
220
James Bottomley39dca552007-07-20 18:22:17 -0500221 error = bsg_register_queue(q, dev, name);
FUJITA Tomonori7aa68e82007-07-09 12:52:06 +0900222 if (error) {
223 blk_cleanup_queue(q);
224 return -ENOMEM;
225 }
226
227 if (rphy)
James Bottomleyb6aff662007-07-20 11:10:05 -0500228 rphy->q = q;
229 else
230 to_sas_host_attrs(shost)->q = q;
231
232 if (rphy)
FUJITA Tomonori7aa68e82007-07-09 12:52:06 +0900233 q->queuedata = rphy;
234 else
235 q->queuedata = shost;
236
237 set_bit(QUEUE_FLAG_BIDI, &q->queue_flags);
238
239 return 0;
240}
241
James Bottomleyb6aff662007-07-20 11:10:05 -0500242static void sas_bsg_remove(struct Scsi_Host *shost, struct sas_rphy *rphy)
243{
244 struct request_queue *q;
245
246 if (rphy)
247 q = rphy->q;
248 else
249 q = to_sas_host_attrs(shost)->q;
250
251 if (!q)
252 return;
253
254 bsg_unregister_queue(q);
255 blk_cleanup_queue(q);
256}
257
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200258/*
259 * SAS host attributes
260 */
261
James Bottomley37be6ee2005-09-09 18:38:27 -0500262static int sas_host_setup(struct transport_container *tc, struct device *dev,
263 struct class_device *cdev)
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200264{
265 struct Scsi_Host *shost = dev_to_shost(dev);
266 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
267
268 INIT_LIST_HEAD(&sas_host->rphy_list);
Christoph Hellwige02f3f52006-01-13 19:04:00 +0100269 mutex_init(&sas_host->lock);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200270 sas_host->next_target_id = 0;
James Bottomley79cb1812006-03-13 13:50:04 -0600271 sas_host->next_expander_id = 0;
James Bottomleyc9fefeb2006-07-02 11:10:18 -0500272 sas_host->next_port_id = 0;
FUJITA Tomonori7aa68e82007-07-09 12:52:06 +0900273
James Bottomley39dca552007-07-20 18:22:17 -0500274 if (sas_bsg_initialize(shost, NULL))
FUJITA Tomonori7aa68e82007-07-09 12:52:06 +0900275 dev_printk(KERN_ERR, dev, "fail to a bsg device %d\n",
276 shost->host_no);
277
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200278 return 0;
279}
280
James Bottomleyb6aff662007-07-20 11:10:05 -0500281static int sas_host_remove(struct transport_container *tc, struct device *dev,
282 struct class_device *cdev)
283{
284 struct Scsi_Host *shost = dev_to_shost(dev);
285
286 sas_bsg_remove(shost, NULL);
287
288 return 0;
289}
290
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200291static DECLARE_TRANSPORT_CLASS(sas_host_class,
James Bottomleyb6aff662007-07-20 11:10:05 -0500292 "sas_host", sas_host_setup, sas_host_remove, NULL);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200293
294static int sas_host_match(struct attribute_container *cont,
295 struct device *dev)
296{
297 struct Scsi_Host *shost;
298 struct sas_internal *i;
299
300 if (!scsi_is_host_device(dev))
301 return 0;
302 shost = dev_to_shost(dev);
303
304 if (!shost->transportt)
305 return 0;
306 if (shost->transportt->host_attrs.ac.class !=
307 &sas_host_class.class)
308 return 0;
309
310 i = to_sas_internal(shost->transportt);
311 return &i->t.host_attrs.ac == cont;
312}
313
314static int do_sas_phy_delete(struct device *dev, void *data)
315{
James Bottomley65c92b02006-06-28 12:22:50 -0400316 int pass = (int)(unsigned long)data;
317
318 if (pass == 0 && scsi_is_sas_port(dev))
319 sas_port_delete(dev_to_sas_port(dev));
320 else if (pass == 1 && scsi_is_sas_phy(dev))
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200321 sas_phy_delete(dev_to_phy(dev));
322 return 0;
323}
324
325/**
James Bottomley65c92b02006-06-28 12:22:50 -0400326 * sas_remove_children -- tear down a devices SAS data structures
327 * @dev: device belonging to the sas object
328 *
329 * Removes all SAS PHYs and remote PHYs for a given object
330 */
331void sas_remove_children(struct device *dev)
332{
333 device_for_each_child(dev, (void *)0, do_sas_phy_delete);
334 device_for_each_child(dev, (void *)1, do_sas_phy_delete);
335}
336EXPORT_SYMBOL(sas_remove_children);
337
338/**
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200339 * sas_remove_host -- tear down a Scsi_Host's SAS data structures
340 * @shost: Scsi Host that is torn down
341 *
342 * Removes all SAS PHYs and remote PHYs for a given Scsi_Host.
343 * Must be called just before scsi_remove_host for SAS HBAs.
344 */
345void sas_remove_host(struct Scsi_Host *shost)
346{
James Bottomley65c92b02006-06-28 12:22:50 -0400347 sas_remove_children(&shost->shost_gendev);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200348}
349EXPORT_SYMBOL(sas_remove_host);
350
351
352/*
James Bottomley65c92b02006-06-28 12:22:50 -0400353 * SAS Phy attributes
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200354 */
355
356#define sas_phy_show_simple(field, name, format_string, cast) \
357static ssize_t \
358show_sas_phy_##name(struct class_device *cdev, char *buf) \
359{ \
360 struct sas_phy *phy = transport_class_to_phy(cdev); \
361 \
362 return snprintf(buf, 20, format_string, cast phy->field); \
363}
364
365#define sas_phy_simple_attr(field, name, format_string, type) \
366 sas_phy_show_simple(field, name, format_string, (type)) \
367static CLASS_DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL)
368
369#define sas_phy_show_protocol(field, name) \
370static ssize_t \
371show_sas_phy_##name(struct class_device *cdev, char *buf) \
372{ \
373 struct sas_phy *phy = transport_class_to_phy(cdev); \
374 \
375 if (!phy->field) \
376 return snprintf(buf, 20, "none\n"); \
377 return get_sas_protocol_names(phy->field, buf); \
378}
379
380#define sas_phy_protocol_attr(field, name) \
381 sas_phy_show_protocol(field, name) \
382static CLASS_DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL)
383
384#define sas_phy_show_linkspeed(field) \
385static ssize_t \
386show_sas_phy_##field(struct class_device *cdev, char *buf) \
387{ \
388 struct sas_phy *phy = transport_class_to_phy(cdev); \
389 \
390 return get_sas_linkspeed_names(phy->field, buf); \
391}
392
James Bottomleyd24e1ee2006-09-06 19:25:22 -0500393/* Fudge to tell if we're minimum or maximum */
394#define sas_phy_store_linkspeed(field) \
395static ssize_t \
396store_sas_phy_##field(struct class_device *cdev, const char *buf, \
397 size_t count) \
398{ \
399 struct sas_phy *phy = transport_class_to_phy(cdev); \
400 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \
401 struct sas_internal *i = to_sas_internal(shost->transportt); \
402 u32 value; \
403 struct sas_phy_linkrates rates = {0}; \
404 int error; \
405 \
406 error = set_sas_linkspeed_names(&value, buf); \
407 if (error) \
408 return error; \
409 rates.field = value; \
410 error = i->f->set_phy_speed(phy, &rates); \
411 \
412 return error ? error : count; \
413}
414
415#define sas_phy_linkspeed_rw_attr(field) \
416 sas_phy_show_linkspeed(field) \
417 sas_phy_store_linkspeed(field) \
418static CLASS_DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, \
419 store_sas_phy_##field)
420
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200421#define sas_phy_linkspeed_attr(field) \
422 sas_phy_show_linkspeed(field) \
423static CLASS_DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL)
424
James Bottomleyd24e1ee2006-09-06 19:25:22 -0500425
Christoph Hellwigc3ee74c2005-09-19 21:59:42 +0200426#define sas_phy_show_linkerror(field) \
427static ssize_t \
428show_sas_phy_##field(struct class_device *cdev, char *buf) \
429{ \
430 struct sas_phy *phy = transport_class_to_phy(cdev); \
431 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \
432 struct sas_internal *i = to_sas_internal(shost->transportt); \
433 int error; \
434 \
James Bottomleydd9fbb522006-03-02 16:01:31 -0600435 error = i->f->get_linkerrors ? i->f->get_linkerrors(phy) : 0; \
Christoph Hellwigc3ee74c2005-09-19 21:59:42 +0200436 if (error) \
437 return error; \
438 return snprintf(buf, 20, "%u\n", phy->field); \
439}
440
441#define sas_phy_linkerror_attr(field) \
442 sas_phy_show_linkerror(field) \
443static CLASS_DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL)
444
445
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200446static ssize_t
447show_sas_device_type(struct class_device *cdev, char *buf)
448{
449 struct sas_phy *phy = transport_class_to_phy(cdev);
450
451 if (!phy->identify.device_type)
452 return snprintf(buf, 20, "none\n");
453 return get_sas_device_type_names(phy->identify.device_type, buf);
454}
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200455static CLASS_DEVICE_ATTR(device_type, S_IRUGO, show_sas_device_type, NULL);
456
Darrick J. Wongacbf1672007-01-11 14:14:57 -0800457static ssize_t do_sas_phy_enable(struct class_device *cdev,
458 size_t count, int enable)
459{
460 struct sas_phy *phy = transport_class_to_phy(cdev);
461 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
462 struct sas_internal *i = to_sas_internal(shost->transportt);
463 int error;
464
465 error = i->f->phy_enable(phy, enable);
466 if (error)
467 return error;
468 phy->enabled = enable;
469 return count;
470};
471
472static ssize_t store_sas_phy_enable(struct class_device *cdev,
473 const char *buf, size_t count)
474{
475 if (count < 1)
476 return -EINVAL;
477
478 switch (buf[0]) {
479 case '0':
480 do_sas_phy_enable(cdev, count, 0);
481 break;
482 case '1':
483 do_sas_phy_enable(cdev, count, 1);
484 break;
485 default:
486 return -EINVAL;
487 }
488
489 return count;
490}
491
492static ssize_t show_sas_phy_enable(struct class_device *cdev, char *buf)
493{
494 struct sas_phy *phy = transport_class_to_phy(cdev);
495
496 return snprintf(buf, 20, "%d", phy->enabled);
497}
498
499static CLASS_DEVICE_ATTR(enable, S_IRUGO | S_IWUSR, show_sas_phy_enable,
500 store_sas_phy_enable);
501
Christoph Hellwig07ba3a92005-10-19 20:01:31 +0200502static ssize_t do_sas_phy_reset(struct class_device *cdev,
503 size_t count, int hard_reset)
504{
505 struct sas_phy *phy = transport_class_to_phy(cdev);
506 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
507 struct sas_internal *i = to_sas_internal(shost->transportt);
508 int error;
509
Christoph Hellwig07ba3a92005-10-19 20:01:31 +0200510 error = i->f->phy_reset(phy, hard_reset);
511 if (error)
512 return error;
513 return count;
514};
515
516static ssize_t store_sas_link_reset(struct class_device *cdev,
517 const char *buf, size_t count)
518{
519 return do_sas_phy_reset(cdev, count, 0);
520}
521static CLASS_DEVICE_ATTR(link_reset, S_IWUSR, NULL, store_sas_link_reset);
522
523static ssize_t store_sas_hard_reset(struct class_device *cdev,
524 const char *buf, size_t count)
525{
526 return do_sas_phy_reset(cdev, count, 1);
527}
528static CLASS_DEVICE_ATTR(hard_reset, S_IWUSR, NULL, store_sas_hard_reset);
529
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200530sas_phy_protocol_attr(identify.initiator_port_protocols,
531 initiator_port_protocols);
532sas_phy_protocol_attr(identify.target_port_protocols,
533 target_port_protocols);
534sas_phy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n",
535 unsigned long long);
536sas_phy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8);
James Bottomleyc9fefeb2006-07-02 11:10:18 -0500537//sas_phy_simple_attr(port_identifier, port_identifier, "%d\n", int);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200538sas_phy_linkspeed_attr(negotiated_linkrate);
539sas_phy_linkspeed_attr(minimum_linkrate_hw);
James Bottomleyd24e1ee2006-09-06 19:25:22 -0500540sas_phy_linkspeed_rw_attr(minimum_linkrate);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200541sas_phy_linkspeed_attr(maximum_linkrate_hw);
James Bottomleyd24e1ee2006-09-06 19:25:22 -0500542sas_phy_linkspeed_rw_attr(maximum_linkrate);
Christoph Hellwigc3ee74c2005-09-19 21:59:42 +0200543sas_phy_linkerror_attr(invalid_dword_count);
544sas_phy_linkerror_attr(running_disparity_error_count);
545sas_phy_linkerror_attr(loss_of_dword_sync_count);
546sas_phy_linkerror_attr(phy_reset_problem_count);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200547
548
549static DECLARE_TRANSPORT_CLASS(sas_phy_class,
550 "sas_phy", NULL, NULL, NULL);
551
552static int sas_phy_match(struct attribute_container *cont, struct device *dev)
553{
554 struct Scsi_Host *shost;
555 struct sas_internal *i;
556
557 if (!scsi_is_sas_phy(dev))
558 return 0;
559 shost = dev_to_shost(dev->parent);
560
561 if (!shost->transportt)
562 return 0;
563 if (shost->transportt->host_attrs.ac.class !=
564 &sas_host_class.class)
565 return 0;
566
567 i = to_sas_internal(shost->transportt);
568 return &i->phy_attr_cont.ac == cont;
569}
570
571static void sas_phy_release(struct device *dev)
572{
573 struct sas_phy *phy = dev_to_phy(dev);
574
575 put_device(dev->parent);
576 kfree(phy);
577}
578
579/**
580 * sas_phy_alloc -- allocates and initialize a SAS PHY structure
581 * @parent: Parent device
Moore, Ericd99ca412006-01-26 16:20:02 -0700582 * @number: Phy index
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200583 *
584 * Allocates an SAS PHY structure. It will be added in the device tree
585 * below the device specified by @parent, which has to be either a Scsi_Host
586 * or sas_rphy.
587 *
588 * Returns:
589 * SAS PHY allocated or %NULL if the allocation failed.
590 */
591struct sas_phy *sas_phy_alloc(struct device *parent, int number)
592{
593 struct Scsi_Host *shost = dev_to_shost(parent);
594 struct sas_phy *phy;
595
Jes Sorensen24669f752006-01-16 10:31:18 -0500596 phy = kzalloc(sizeof(*phy), GFP_KERNEL);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200597 if (!phy)
598 return NULL;
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200599
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200600 phy->number = number;
Darrick J. Wongacbf1672007-01-11 14:14:57 -0800601 phy->enabled = 1;
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200602
603 device_initialize(&phy->dev);
604 phy->dev.parent = get_device(parent);
605 phy->dev.release = sas_phy_release;
James Bottomley65c92b02006-06-28 12:22:50 -0400606 INIT_LIST_HEAD(&phy->port_siblings);
James Bottomley79cb1812006-03-13 13:50:04 -0600607 if (scsi_is_sas_expander_device(parent)) {
608 struct sas_rphy *rphy = dev_to_rphy(parent);
James Bottomley65c92b02006-06-28 12:22:50 -0400609 sprintf(phy->dev.bus_id, "phy-%d:%d:%d", shost->host_no,
James Bottomley79cb1812006-03-13 13:50:04 -0600610 rphy->scsi_target_id, number);
611 } else
612 sprintf(phy->dev.bus_id, "phy-%d:%d", shost->host_no, number);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200613
614 transport_setup_device(&phy->dev);
615
616 return phy;
617}
618EXPORT_SYMBOL(sas_phy_alloc);
619
620/**
Uwe Kleine-König1b3c3712007-02-17 19:23:03 +0100621 * sas_phy_add -- add a SAS PHY to the device hierarchy
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200622 * @phy: The PHY to be added
623 *
624 * Publishes a SAS PHY to the rest of the system.
625 */
626int sas_phy_add(struct sas_phy *phy)
627{
628 int error;
629
630 error = device_add(&phy->dev);
631 if (!error) {
632 transport_add_device(&phy->dev);
633 transport_configure_device(&phy->dev);
634 }
635
636 return error;
637}
638EXPORT_SYMBOL(sas_phy_add);
639
640/**
641 * sas_phy_free -- free a SAS PHY
642 * @phy: SAS PHY to free
643 *
644 * Frees the specified SAS PHY.
645 *
646 * Note:
647 * This function must only be called on a PHY that has not
648 * sucessfully been added using sas_phy_add().
649 */
650void sas_phy_free(struct sas_phy *phy)
651{
652 transport_destroy_device(&phy->dev);
Mike Anderson92aab642006-03-27 09:37:28 -0800653 put_device(&phy->dev);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200654}
655EXPORT_SYMBOL(sas_phy_free);
656
657/**
658 * sas_phy_delete -- remove SAS PHY
659 * @phy: SAS PHY to remove
660 *
661 * Removes the specified SAS PHY. If the SAS PHY has an
662 * associated remote PHY it is removed before.
663 */
664void
665sas_phy_delete(struct sas_phy *phy)
666{
667 struct device *dev = &phy->dev;
668
James Bottomley65c92b02006-06-28 12:22:50 -0400669 /* this happens if the phy is still part of a port when deleted */
670 BUG_ON(!list_empty(&phy->port_siblings));
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200671
672 transport_remove_device(dev);
673 device_del(dev);
674 transport_destroy_device(dev);
Mike Anderson92aab642006-03-27 09:37:28 -0800675 put_device(dev);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200676}
677EXPORT_SYMBOL(sas_phy_delete);
678
679/**
680 * scsi_is_sas_phy -- check if a struct device represents a SAS PHY
681 * @dev: device to check
682 *
683 * Returns:
684 * %1 if the device represents a SAS PHY, %0 else
685 */
686int scsi_is_sas_phy(const struct device *dev)
687{
688 return dev->release == sas_phy_release;
689}
690EXPORT_SYMBOL(scsi_is_sas_phy);
691
692/*
James Bottomley65c92b02006-06-28 12:22:50 -0400693 * SAS Port attributes
694 */
695#define sas_port_show_simple(field, name, format_string, cast) \
696static ssize_t \
697show_sas_port_##name(struct class_device *cdev, char *buf) \
698{ \
699 struct sas_port *port = transport_class_to_sas_port(cdev); \
700 \
701 return snprintf(buf, 20, format_string, cast port->field); \
702}
703
704#define sas_port_simple_attr(field, name, format_string, type) \
705 sas_port_show_simple(field, name, format_string, (type)) \
706static CLASS_DEVICE_ATTR(name, S_IRUGO, show_sas_port_##name, NULL)
707
708sas_port_simple_attr(num_phys, num_phys, "%d\n", int);
709
710static DECLARE_TRANSPORT_CLASS(sas_port_class,
711 "sas_port", NULL, NULL, NULL);
712
713static int sas_port_match(struct attribute_container *cont, struct device *dev)
714{
715 struct Scsi_Host *shost;
716 struct sas_internal *i;
717
718 if (!scsi_is_sas_port(dev))
719 return 0;
720 shost = dev_to_shost(dev->parent);
721
722 if (!shost->transportt)
723 return 0;
724 if (shost->transportt->host_attrs.ac.class !=
725 &sas_host_class.class)
726 return 0;
727
728 i = to_sas_internal(shost->transportt);
729 return &i->port_attr_cont.ac == cont;
730}
731
732
733static void sas_port_release(struct device *dev)
734{
735 struct sas_port *port = dev_to_sas_port(dev);
736
737 BUG_ON(!list_empty(&port->phy_list));
738
739 put_device(dev->parent);
740 kfree(port);
741}
742
743static void sas_port_create_link(struct sas_port *port,
744 struct sas_phy *phy)
745{
Darrick J. Wong21434962007-01-26 14:08:46 -0800746 int res;
747
748 res = sysfs_create_link(&port->dev.kobj, &phy->dev.kobj,
749 phy->dev.bus_id);
750 if (res)
751 goto err;
752 res = sysfs_create_link(&phy->dev.kobj, &port->dev.kobj, "port");
753 if (res)
754 goto err;
755 return;
756err:
757 printk(KERN_ERR "%s: Cannot create port links, err=%d\n",
758 __FUNCTION__, res);
James Bottomley65c92b02006-06-28 12:22:50 -0400759}
760
761static void sas_port_delete_link(struct sas_port *port,
762 struct sas_phy *phy)
763{
764 sysfs_remove_link(&port->dev.kobj, phy->dev.bus_id);
765 sysfs_remove_link(&phy->dev.kobj, "port");
766}
767
768/** sas_port_alloc - allocate and initialize a SAS port structure
769 *
770 * @parent: parent device
771 * @port_id: port number
772 *
773 * Allocates a SAS port structure. It will be added to the device tree
774 * below the device specified by @parent which must be either a Scsi_Host
775 * or a sas_expander_device.
776 *
777 * Returns %NULL on error
778 */
779struct sas_port *sas_port_alloc(struct device *parent, int port_id)
780{
781 struct Scsi_Host *shost = dev_to_shost(parent);
782 struct sas_port *port;
783
784 port = kzalloc(sizeof(*port), GFP_KERNEL);
785 if (!port)
786 return NULL;
787
788 port->port_identifier = port_id;
789
790 device_initialize(&port->dev);
791
792 port->dev.parent = get_device(parent);
793 port->dev.release = sas_port_release;
794
795 mutex_init(&port->phy_list_mutex);
796 INIT_LIST_HEAD(&port->phy_list);
797
798 if (scsi_is_sas_expander_device(parent)) {
799 struct sas_rphy *rphy = dev_to_rphy(parent);
800 sprintf(port->dev.bus_id, "port-%d:%d:%d", shost->host_no,
801 rphy->scsi_target_id, port->port_identifier);
802 } else
803 sprintf(port->dev.bus_id, "port-%d:%d", shost->host_no,
804 port->port_identifier);
805
806 transport_setup_device(&port->dev);
807
808 return port;
809}
810EXPORT_SYMBOL(sas_port_alloc);
811
James Bottomleyc9fefeb2006-07-02 11:10:18 -0500812/** sas_port_alloc_num - allocate and initialize a SAS port structure
813 *
814 * @parent: parent device
815 *
816 * Allocates a SAS port structure and a number to go with it. This
817 * interface is really for adapters where the port number has no
818 * meansing, so the sas class should manage them. It will be added to
819 * the device tree below the device specified by @parent which must be
820 * either a Scsi_Host or a sas_expander_device.
821 *
822 * Returns %NULL on error
823 */
824struct sas_port *sas_port_alloc_num(struct device *parent)
825{
826 int index;
827 struct Scsi_Host *shost = dev_to_shost(parent);
828 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
829
830 /* FIXME: use idr for this eventually */
831 mutex_lock(&sas_host->lock);
832 if (scsi_is_sas_expander_device(parent)) {
833 struct sas_rphy *rphy = dev_to_rphy(parent);
834 struct sas_expander_device *exp = rphy_to_expander_device(rphy);
835
836 index = exp->next_port_id++;
837 } else
838 index = sas_host->next_port_id++;
839 mutex_unlock(&sas_host->lock);
840 return sas_port_alloc(parent, index);
841}
842EXPORT_SYMBOL(sas_port_alloc_num);
843
James Bottomley65c92b02006-06-28 12:22:50 -0400844/**
845 * sas_port_add - add a SAS port to the device hierarchy
846 *
847 * @port: port to be added
848 *
849 * publishes a port to the rest of the system
850 */
851int sas_port_add(struct sas_port *port)
852{
853 int error;
854
855 /* No phys should be added until this is made visible */
856 BUG_ON(!list_empty(&port->phy_list));
857
858 error = device_add(&port->dev);
859
860 if (error)
861 return error;
862
863 transport_add_device(&port->dev);
864 transport_configure_device(&port->dev);
865
866 return 0;
867}
868EXPORT_SYMBOL(sas_port_add);
869
870/**
871 * sas_port_free -- free a SAS PORT
872 * @port: SAS PORT to free
873 *
874 * Frees the specified SAS PORT.
875 *
876 * Note:
877 * This function must only be called on a PORT that has not
878 * sucessfully been added using sas_port_add().
879 */
880void sas_port_free(struct sas_port *port)
881{
882 transport_destroy_device(&port->dev);
883 put_device(&port->dev);
884}
885EXPORT_SYMBOL(sas_port_free);
886
887/**
888 * sas_port_delete -- remove SAS PORT
889 * @port: SAS PORT to remove
890 *
891 * Removes the specified SAS PORT. If the SAS PORT has an
892 * associated phys, unlink them from the port as well.
893 */
894void sas_port_delete(struct sas_port *port)
895{
896 struct device *dev = &port->dev;
897 struct sas_phy *phy, *tmp_phy;
898
899 if (port->rphy) {
900 sas_rphy_delete(port->rphy);
901 port->rphy = NULL;
902 }
903
904 mutex_lock(&port->phy_list_mutex);
905 list_for_each_entry_safe(phy, tmp_phy, &port->phy_list,
906 port_siblings) {
907 sas_port_delete_link(port, phy);
908 list_del_init(&phy->port_siblings);
909 }
910 mutex_unlock(&port->phy_list_mutex);
911
James Bottomleya0e1b6e2006-07-09 12:38:19 -0500912 if (port->is_backlink) {
913 struct device *parent = port->dev.parent;
914
915 sysfs_remove_link(&port->dev.kobj, parent->bus_id);
916 port->is_backlink = 0;
917 }
918
James Bottomley65c92b02006-06-28 12:22:50 -0400919 transport_remove_device(dev);
920 device_del(dev);
921 transport_destroy_device(dev);
922 put_device(dev);
923}
924EXPORT_SYMBOL(sas_port_delete);
925
926/**
927 * scsi_is_sas_port -- check if a struct device represents a SAS port
928 * @dev: device to check
929 *
930 * Returns:
931 * %1 if the device represents a SAS Port, %0 else
932 */
933int scsi_is_sas_port(const struct device *dev)
934{
935 return dev->release == sas_port_release;
936}
937EXPORT_SYMBOL(scsi_is_sas_port);
938
939/**
940 * sas_port_add_phy - add another phy to a port to form a wide port
941 * @port: port to add the phy to
942 * @phy: phy to add
943 *
944 * When a port is initially created, it is empty (has no phys). All
945 * ports must have at least one phy to operated, and all wide ports
946 * must have at least two. The current code makes no difference
947 * between ports and wide ports, but the only object that can be
948 * connected to a remote device is a port, so ports must be formed on
949 * all devices with phys if they're connected to anything.
950 */
951void sas_port_add_phy(struct sas_port *port, struct sas_phy *phy)
952{
953 mutex_lock(&port->phy_list_mutex);
954 if (unlikely(!list_empty(&phy->port_siblings))) {
955 /* make sure we're already on this port */
956 struct sas_phy *tmp;
957
958 list_for_each_entry(tmp, &port->phy_list, port_siblings)
959 if (tmp == phy)
960 break;
961 /* If this trips, you added a phy that was already
962 * part of a different port */
963 if (unlikely(tmp != phy)) {
964 dev_printk(KERN_ERR, &port->dev, "trying to add phy %s fails: it's already part of another port\n", phy->dev.bus_id);
965 BUG();
966 }
967 } else {
968 sas_port_create_link(port, phy);
969 list_add_tail(&phy->port_siblings, &port->phy_list);
970 port->num_phys++;
971 }
972 mutex_unlock(&port->phy_list_mutex);
973}
974EXPORT_SYMBOL(sas_port_add_phy);
975
976/**
977 * sas_port_delete_phy - remove a phy from a port or wide port
978 * @port: port to remove the phy from
979 * @phy: phy to remove
980 *
981 * This operation is used for tearing down ports again. It must be
982 * done to every port or wide port before calling sas_port_delete.
983 */
984void sas_port_delete_phy(struct sas_port *port, struct sas_phy *phy)
985{
986 mutex_lock(&port->phy_list_mutex);
987 sas_port_delete_link(port, phy);
988 list_del_init(&phy->port_siblings);
989 port->num_phys--;
990 mutex_unlock(&port->phy_list_mutex);
991}
992EXPORT_SYMBOL(sas_port_delete_phy);
993
James Bottomleya0e1b6e2006-07-09 12:38:19 -0500994void sas_port_mark_backlink(struct sas_port *port)
995{
Darrick J. Wong21434962007-01-26 14:08:46 -0800996 int res;
James Bottomleya0e1b6e2006-07-09 12:38:19 -0500997 struct device *parent = port->dev.parent->parent->parent;
998
999 if (port->is_backlink)
1000 return;
1001 port->is_backlink = 1;
Darrick J. Wong21434962007-01-26 14:08:46 -08001002 res = sysfs_create_link(&port->dev.kobj, &parent->kobj,
1003 parent->bus_id);
1004 if (res)
1005 goto err;
1006 return;
1007err:
1008 printk(KERN_ERR "%s: Cannot create port backlink, err=%d\n",
1009 __FUNCTION__, res);
James Bottomleya0e1b6e2006-07-09 12:38:19 -05001010
1011}
1012EXPORT_SYMBOL(sas_port_mark_backlink);
1013
James Bottomley65c92b02006-06-28 12:22:50 -04001014/*
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001015 * SAS remote PHY attributes.
1016 */
1017
1018#define sas_rphy_show_simple(field, name, format_string, cast) \
1019static ssize_t \
1020show_sas_rphy_##name(struct class_device *cdev, char *buf) \
1021{ \
1022 struct sas_rphy *rphy = transport_class_to_rphy(cdev); \
1023 \
1024 return snprintf(buf, 20, format_string, cast rphy->field); \
1025}
1026
1027#define sas_rphy_simple_attr(field, name, format_string, type) \
1028 sas_rphy_show_simple(field, name, format_string, (type)) \
1029static SAS_CLASS_DEVICE_ATTR(rphy, name, S_IRUGO, \
1030 show_sas_rphy_##name, NULL)
1031
1032#define sas_rphy_show_protocol(field, name) \
1033static ssize_t \
1034show_sas_rphy_##name(struct class_device *cdev, char *buf) \
1035{ \
1036 struct sas_rphy *rphy = transport_class_to_rphy(cdev); \
1037 \
1038 if (!rphy->field) \
1039 return snprintf(buf, 20, "none\n"); \
1040 return get_sas_protocol_names(rphy->field, buf); \
1041}
1042
1043#define sas_rphy_protocol_attr(field, name) \
1044 sas_rphy_show_protocol(field, name) \
1045static SAS_CLASS_DEVICE_ATTR(rphy, name, S_IRUGO, \
1046 show_sas_rphy_##name, NULL)
1047
1048static ssize_t
1049show_sas_rphy_device_type(struct class_device *cdev, char *buf)
1050{
1051 struct sas_rphy *rphy = transport_class_to_rphy(cdev);
1052
1053 if (!rphy->identify.device_type)
1054 return snprintf(buf, 20, "none\n");
1055 return get_sas_device_type_names(
1056 rphy->identify.device_type, buf);
1057}
1058
1059static SAS_CLASS_DEVICE_ATTR(rphy, device_type, S_IRUGO,
1060 show_sas_rphy_device_type, NULL);
1061
Christoph Hellwiga0125642006-02-16 13:31:47 +01001062static ssize_t
1063show_sas_rphy_enclosure_identifier(struct class_device *cdev, char *buf)
1064{
1065 struct sas_rphy *rphy = transport_class_to_rphy(cdev);
1066 struct sas_phy *phy = dev_to_phy(rphy->dev.parent);
1067 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
1068 struct sas_internal *i = to_sas_internal(shost->transportt);
1069 u64 identifier;
1070 int error;
1071
1072 /*
1073 * Only devices behind an expander are supported, because the
1074 * enclosure identifier is a SMP feature.
1075 */
James Bottomleyf4ad7b52006-08-25 13:48:18 -05001076 if (scsi_is_sas_phy_local(phy))
Christoph Hellwiga0125642006-02-16 13:31:47 +01001077 return -EINVAL;
1078
1079 error = i->f->get_enclosure_identifier(rphy, &identifier);
1080 if (error)
1081 return error;
1082 return sprintf(buf, "0x%llx\n", (unsigned long long)identifier);
1083}
1084
1085static SAS_CLASS_DEVICE_ATTR(rphy, enclosure_identifier, S_IRUGO,
1086 show_sas_rphy_enclosure_identifier, NULL);
1087
1088static ssize_t
1089show_sas_rphy_bay_identifier(struct class_device *cdev, char *buf)
1090{
1091 struct sas_rphy *rphy = transport_class_to_rphy(cdev);
1092 struct sas_phy *phy = dev_to_phy(rphy->dev.parent);
1093 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
1094 struct sas_internal *i = to_sas_internal(shost->transportt);
1095 int val;
1096
James Bottomleyf4ad7b52006-08-25 13:48:18 -05001097 if (scsi_is_sas_phy_local(phy))
Christoph Hellwiga0125642006-02-16 13:31:47 +01001098 return -EINVAL;
1099
1100 val = i->f->get_bay_identifier(rphy);
1101 if (val < 0)
1102 return val;
1103 return sprintf(buf, "%d\n", val);
1104}
1105
1106static SAS_CLASS_DEVICE_ATTR(rphy, bay_identifier, S_IRUGO,
1107 show_sas_rphy_bay_identifier, NULL);
1108
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001109sas_rphy_protocol_attr(identify.initiator_port_protocols,
1110 initiator_port_protocols);
1111sas_rphy_protocol_attr(identify.target_port_protocols, target_port_protocols);
1112sas_rphy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n",
1113 unsigned long long);
1114sas_rphy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8);
1115
James Bottomley42ab0362006-03-04 09:10:18 -06001116/* only need 8 bytes of data plus header (4 or 8) */
1117#define BUF_SIZE 64
1118
1119int sas_read_port_mode_page(struct scsi_device *sdev)
1120{
1121 char *buffer = kzalloc(BUF_SIZE, GFP_KERNEL), *msdata;
1122 struct sas_rphy *rphy = target_to_rphy(sdev->sdev_target);
1123 struct sas_end_device *rdev;
1124 struct scsi_mode_data mode_data;
1125 int res, error;
1126
1127 BUG_ON(rphy->identify.device_type != SAS_END_DEVICE);
1128
1129 rdev = rphy_to_end_device(rphy);
1130
1131 if (!buffer)
1132 return -ENOMEM;
1133
1134 res = scsi_mode_sense(sdev, 1, 0x19, buffer, BUF_SIZE, 30*HZ, 3,
1135 &mode_data, NULL);
1136
1137 error = -EINVAL;
1138 if (!scsi_status_is_good(res))
1139 goto out;
1140
1141 msdata = buffer + mode_data.header_length +
1142 mode_data.block_descriptor_length;
1143
1144 if (msdata - buffer > BUF_SIZE - 8)
1145 goto out;
1146
1147 error = 0;
1148
1149 rdev->ready_led_meaning = msdata[2] & 0x10 ? 1 : 0;
1150 rdev->I_T_nexus_loss_timeout = (msdata[4] << 8) + msdata[5];
1151 rdev->initiator_response_timeout = (msdata[6] << 8) + msdata[7];
1152
1153 out:
1154 kfree(buffer);
1155 return error;
1156}
1157EXPORT_SYMBOL(sas_read_port_mode_page);
1158
James Bottomley79cb1812006-03-13 13:50:04 -06001159static DECLARE_TRANSPORT_CLASS(sas_end_dev_class,
1160 "sas_end_device", NULL, NULL, NULL);
1161
James Bottomley42ab0362006-03-04 09:10:18 -06001162#define sas_end_dev_show_simple(field, name, format_string, cast) \
1163static ssize_t \
1164show_sas_end_dev_##name(struct class_device *cdev, char *buf) \
1165{ \
1166 struct sas_rphy *rphy = transport_class_to_rphy(cdev); \
1167 struct sas_end_device *rdev = rphy_to_end_device(rphy); \
1168 \
1169 return snprintf(buf, 20, format_string, cast rdev->field); \
1170}
1171
1172#define sas_end_dev_simple_attr(field, name, format_string, type) \
1173 sas_end_dev_show_simple(field, name, format_string, (type)) \
1174static SAS_CLASS_DEVICE_ATTR(end_dev, name, S_IRUGO, \
1175 show_sas_end_dev_##name, NULL)
1176
1177sas_end_dev_simple_attr(ready_led_meaning, ready_led_meaning, "%d\n", int);
1178sas_end_dev_simple_attr(I_T_nexus_loss_timeout, I_T_nexus_loss_timeout,
1179 "%d\n", int);
1180sas_end_dev_simple_attr(initiator_response_timeout, initiator_response_timeout,
1181 "%d\n", int);
1182
James Bottomley79cb1812006-03-13 13:50:04 -06001183static DECLARE_TRANSPORT_CLASS(sas_expander_class,
1184 "sas_expander", NULL, NULL, NULL);
1185
1186#define sas_expander_show_simple(field, name, format_string, cast) \
1187static ssize_t \
1188show_sas_expander_##name(struct class_device *cdev, char *buf) \
1189{ \
1190 struct sas_rphy *rphy = transport_class_to_rphy(cdev); \
1191 struct sas_expander_device *edev = rphy_to_expander_device(rphy); \
1192 \
1193 return snprintf(buf, 20, format_string, cast edev->field); \
1194}
1195
1196#define sas_expander_simple_attr(field, name, format_string, type) \
1197 sas_expander_show_simple(field, name, format_string, (type)) \
1198static SAS_CLASS_DEVICE_ATTR(expander, name, S_IRUGO, \
1199 show_sas_expander_##name, NULL)
1200
1201sas_expander_simple_attr(vendor_id, vendor_id, "%s\n", char *);
1202sas_expander_simple_attr(product_id, product_id, "%s\n", char *);
1203sas_expander_simple_attr(product_rev, product_rev, "%s\n", char *);
1204sas_expander_simple_attr(component_vendor_id, component_vendor_id,
1205 "%s\n", char *);
1206sas_expander_simple_attr(component_id, component_id, "%u\n", unsigned int);
1207sas_expander_simple_attr(component_revision_id, component_revision_id, "%u\n",
1208 unsigned int);
1209sas_expander_simple_attr(level, level, "%d\n", int);
James Bottomley42ab0362006-03-04 09:10:18 -06001210
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001211static DECLARE_TRANSPORT_CLASS(sas_rphy_class,
James Bottomley2f8600d2006-03-18 15:00:50 -06001212 "sas_device", NULL, NULL, NULL);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001213
1214static int sas_rphy_match(struct attribute_container *cont, struct device *dev)
1215{
1216 struct Scsi_Host *shost;
1217 struct sas_internal *i;
1218
1219 if (!scsi_is_sas_rphy(dev))
1220 return 0;
1221 shost = dev_to_shost(dev->parent->parent);
1222
1223 if (!shost->transportt)
1224 return 0;
1225 if (shost->transportt->host_attrs.ac.class !=
1226 &sas_host_class.class)
1227 return 0;
1228
1229 i = to_sas_internal(shost->transportt);
1230 return &i->rphy_attr_cont.ac == cont;
1231}
1232
James Bottomley42ab0362006-03-04 09:10:18 -06001233static int sas_end_dev_match(struct attribute_container *cont,
1234 struct device *dev)
1235{
1236 struct Scsi_Host *shost;
1237 struct sas_internal *i;
1238 struct sas_rphy *rphy;
1239
1240 if (!scsi_is_sas_rphy(dev))
1241 return 0;
1242 shost = dev_to_shost(dev->parent->parent);
1243 rphy = dev_to_rphy(dev);
1244
1245 if (!shost->transportt)
1246 return 0;
1247 if (shost->transportt->host_attrs.ac.class !=
1248 &sas_host_class.class)
1249 return 0;
1250
1251 i = to_sas_internal(shost->transportt);
1252 return &i->end_dev_attr_cont.ac == cont &&
James Bottomley2f8600d2006-03-18 15:00:50 -06001253 rphy->identify.device_type == SAS_END_DEVICE;
James Bottomley42ab0362006-03-04 09:10:18 -06001254}
1255
James Bottomley79cb1812006-03-13 13:50:04 -06001256static int sas_expander_match(struct attribute_container *cont,
1257 struct device *dev)
1258{
1259 struct Scsi_Host *shost;
1260 struct sas_internal *i;
1261 struct sas_rphy *rphy;
1262
1263 if (!scsi_is_sas_rphy(dev))
1264 return 0;
1265 shost = dev_to_shost(dev->parent->parent);
1266 rphy = dev_to_rphy(dev);
1267
1268 if (!shost->transportt)
1269 return 0;
1270 if (shost->transportt->host_attrs.ac.class !=
1271 &sas_host_class.class)
1272 return 0;
1273
1274 i = to_sas_internal(shost->transportt);
1275 return &i->expander_attr_cont.ac == cont &&
1276 (rphy->identify.device_type == SAS_EDGE_EXPANDER_DEVICE ||
James Bottomley2f8600d2006-03-18 15:00:50 -06001277 rphy->identify.device_type == SAS_FANOUT_EXPANDER_DEVICE);
James Bottomley79cb1812006-03-13 13:50:04 -06001278}
1279
James Bottomley2f8600d2006-03-18 15:00:50 -06001280static void sas_expander_release(struct device *dev)
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001281{
1282 struct sas_rphy *rphy = dev_to_rphy(dev);
James Bottomley2f8600d2006-03-18 15:00:50 -06001283 struct sas_expander_device *edev = rphy_to_expander_device(rphy);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001284
1285 put_device(dev->parent);
James Bottomley2f8600d2006-03-18 15:00:50 -06001286 kfree(edev);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001287}
1288
James Bottomley2f8600d2006-03-18 15:00:50 -06001289static void sas_end_device_release(struct device *dev)
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001290{
James Bottomley2f8600d2006-03-18 15:00:50 -06001291 struct sas_rphy *rphy = dev_to_rphy(dev);
1292 struct sas_end_device *edev = rphy_to_end_device(rphy);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001293
James Bottomley2f8600d2006-03-18 15:00:50 -06001294 put_device(dev->parent);
1295 kfree(edev);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001296}
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001297
1298/**
James Bottomleyc5943d32006-06-12 09:09:18 -05001299 * sas_rphy_initialize - common rphy intialization
1300 * @rphy: rphy to initialise
1301 *
1302 * Used by both sas_end_device_alloc() and sas_expander_alloc() to
1303 * initialise the common rphy component of each.
1304 */
1305static void sas_rphy_initialize(struct sas_rphy *rphy)
1306{
1307 INIT_LIST_HEAD(&rphy->list);
1308}
1309
1310/**
James Bottomley42ab0362006-03-04 09:10:18 -06001311 * sas_end_device_alloc - allocate an rphy for an end device
1312 *
1313 * Allocates an SAS remote PHY structure, connected to @parent.
1314 *
1315 * Returns:
1316 * SAS PHY allocated or %NULL if the allocation failed.
1317 */
James Bottomley65c92b02006-06-28 12:22:50 -04001318struct sas_rphy *sas_end_device_alloc(struct sas_port *parent)
James Bottomley42ab0362006-03-04 09:10:18 -06001319{
1320 struct Scsi_Host *shost = dev_to_shost(&parent->dev);
1321 struct sas_end_device *rdev;
1322
1323 rdev = kzalloc(sizeof(*rdev), GFP_KERNEL);
1324 if (!rdev) {
James Bottomley42ab0362006-03-04 09:10:18 -06001325 return NULL;
1326 }
1327
1328 device_initialize(&rdev->rphy.dev);
1329 rdev->rphy.dev.parent = get_device(&parent->dev);
James Bottomley2f8600d2006-03-18 15:00:50 -06001330 rdev->rphy.dev.release = sas_end_device_release;
James Bottomley65c92b02006-06-28 12:22:50 -04001331 if (scsi_is_sas_expander_device(parent->dev.parent)) {
1332 struct sas_rphy *rphy = dev_to_rphy(parent->dev.parent);
1333 sprintf(rdev->rphy.dev.bus_id, "end_device-%d:%d:%d",
1334 shost->host_no, rphy->scsi_target_id, parent->port_identifier);
1335 } else
1336 sprintf(rdev->rphy.dev.bus_id, "end_device-%d:%d",
1337 shost->host_no, parent->port_identifier);
James Bottomley42ab0362006-03-04 09:10:18 -06001338 rdev->rphy.identify.device_type = SAS_END_DEVICE;
James Bottomleyc5943d32006-06-12 09:09:18 -05001339 sas_rphy_initialize(&rdev->rphy);
James Bottomley42ab0362006-03-04 09:10:18 -06001340 transport_setup_device(&rdev->rphy.dev);
1341
1342 return &rdev->rphy;
1343}
1344EXPORT_SYMBOL(sas_end_device_alloc);
1345
James Bottomley79cb1812006-03-13 13:50:04 -06001346/**
1347 * sas_expander_alloc - allocate an rphy for an end device
1348 *
1349 * Allocates an SAS remote PHY structure, connected to @parent.
1350 *
1351 * Returns:
1352 * SAS PHY allocated or %NULL if the allocation failed.
1353 */
James Bottomley65c92b02006-06-28 12:22:50 -04001354struct sas_rphy *sas_expander_alloc(struct sas_port *parent,
James Bottomley79cb1812006-03-13 13:50:04 -06001355 enum sas_device_type type)
1356{
1357 struct Scsi_Host *shost = dev_to_shost(&parent->dev);
1358 struct sas_expander_device *rdev;
1359 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
1360
1361 BUG_ON(type != SAS_EDGE_EXPANDER_DEVICE &&
1362 type != SAS_FANOUT_EXPANDER_DEVICE);
1363
1364 rdev = kzalloc(sizeof(*rdev), GFP_KERNEL);
1365 if (!rdev) {
James Bottomley79cb1812006-03-13 13:50:04 -06001366 return NULL;
1367 }
1368
1369 device_initialize(&rdev->rphy.dev);
1370 rdev->rphy.dev.parent = get_device(&parent->dev);
James Bottomley2f8600d2006-03-18 15:00:50 -06001371 rdev->rphy.dev.release = sas_expander_release;
James Bottomley79cb1812006-03-13 13:50:04 -06001372 mutex_lock(&sas_host->lock);
1373 rdev->rphy.scsi_target_id = sas_host->next_expander_id++;
1374 mutex_unlock(&sas_host->lock);
1375 sprintf(rdev->rphy.dev.bus_id, "expander-%d:%d",
1376 shost->host_no, rdev->rphy.scsi_target_id);
1377 rdev->rphy.identify.device_type = type;
James Bottomleyc5943d32006-06-12 09:09:18 -05001378 sas_rphy_initialize(&rdev->rphy);
James Bottomley79cb1812006-03-13 13:50:04 -06001379 transport_setup_device(&rdev->rphy.dev);
1380
1381 return &rdev->rphy;
1382}
1383EXPORT_SYMBOL(sas_expander_alloc);
James Bottomley42ab0362006-03-04 09:10:18 -06001384
1385/**
Uwe Kleine-König1b3c3712007-02-17 19:23:03 +01001386 * sas_rphy_add -- add a SAS remote PHY to the device hierarchy
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001387 * @rphy: The remote PHY to be added
1388 *
1389 * Publishes a SAS remote PHY to the rest of the system.
1390 */
1391int sas_rphy_add(struct sas_rphy *rphy)
1392{
James Bottomley65c92b02006-06-28 12:22:50 -04001393 struct sas_port *parent = dev_to_sas_port(rphy->dev.parent);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001394 struct Scsi_Host *shost = dev_to_shost(parent->dev.parent);
1395 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
1396 struct sas_identify *identify = &rphy->identify;
1397 int error;
1398
1399 if (parent->rphy)
1400 return -ENXIO;
1401 parent->rphy = rphy;
1402
1403 error = device_add(&rphy->dev);
1404 if (error)
1405 return error;
1406 transport_add_device(&rphy->dev);
1407 transport_configure_device(&rphy->dev);
James Bottomley39dca552007-07-20 18:22:17 -05001408 if (sas_bsg_initialize(shost, rphy))
1409 printk("fail to a bsg device %s\n", rphy->dev.bus_id);
1410
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001411
Christoph Hellwige02f3f52006-01-13 19:04:00 +01001412 mutex_lock(&sas_host->lock);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001413 list_add_tail(&rphy->list, &sas_host->rphy_list);
1414 if (identify->device_type == SAS_END_DEVICE &&
1415 (identify->target_port_protocols &
1416 (SAS_PROTOCOL_SSP|SAS_PROTOCOL_STP|SAS_PROTOCOL_SATA)))
1417 rphy->scsi_target_id = sas_host->next_target_id++;
James Bottomley7676f832006-04-14 09:47:59 -05001418 else if (identify->device_type == SAS_END_DEVICE)
1419 rphy->scsi_target_id = -1;
Christoph Hellwige02f3f52006-01-13 19:04:00 +01001420 mutex_unlock(&sas_host->lock);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001421
James Bottomley79cb1812006-03-13 13:50:04 -06001422 if (identify->device_type == SAS_END_DEVICE &&
1423 rphy->scsi_target_id != -1) {
James Bottomleye8bf3942006-07-11 17:49:34 -04001424 scsi_scan_target(&rphy->dev, 0,
Darrick J. Wongc8490f32007-01-11 14:15:09 -08001425 rphy->scsi_target_id, SCAN_WILD_CARD, 0);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001426 }
1427
1428 return 0;
1429}
1430EXPORT_SYMBOL(sas_rphy_add);
1431
1432/**
1433 * sas_rphy_free -- free a SAS remote PHY
1434 * @rphy SAS remote PHY to free
1435 *
1436 * Frees the specified SAS remote PHY.
1437 *
1438 * Note:
1439 * This function must only be called on a remote
1440 * PHY that has not sucessfully been added using
Darrick J. Wong6f63caa2007-01-26 14:08:43 -08001441 * sas_rphy_add() (or has been sas_rphy_remove()'d)
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001442 */
1443void sas_rphy_free(struct sas_rphy *rphy)
1444{
Mike Anderson92aab642006-03-27 09:37:28 -08001445 struct device *dev = &rphy->dev;
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001446 struct Scsi_Host *shost = dev_to_shost(rphy->dev.parent->parent);
1447 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
1448
Christoph Hellwige02f3f52006-01-13 19:04:00 +01001449 mutex_lock(&sas_host->lock);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001450 list_del(&rphy->list);
Christoph Hellwige02f3f52006-01-13 19:04:00 +01001451 mutex_unlock(&sas_host->lock);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001452
James Bottomleyb6aff662007-07-20 11:10:05 -05001453 sas_bsg_remove(shost, rphy);
1454
Mike Anderson92aab642006-03-27 09:37:28 -08001455 transport_destroy_device(dev);
James Bottomley2f8600d2006-03-18 15:00:50 -06001456
Mike Anderson92aab642006-03-27 09:37:28 -08001457 put_device(dev);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001458}
1459EXPORT_SYMBOL(sas_rphy_free);
1460
1461/**
Darrick J. Wong6f63caa2007-01-26 14:08:43 -08001462 * sas_rphy_delete -- remove and free SAS remote PHY
1463 * @rphy: SAS remote PHY to remove and free
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001464 *
Darrick J. Wong6f63caa2007-01-26 14:08:43 -08001465 * Removes the specified SAS remote PHY and frees it.
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001466 */
1467void
1468sas_rphy_delete(struct sas_rphy *rphy)
1469{
Darrick J. Wong6f63caa2007-01-26 14:08:43 -08001470 sas_rphy_remove(rphy);
1471 sas_rphy_free(rphy);
1472}
1473EXPORT_SYMBOL(sas_rphy_delete);
1474
1475/**
1476 * sas_rphy_remove -- remove SAS remote PHY
1477 * @rphy: SAS remote phy to remove
1478 *
1479 * Removes the specified SAS remote PHY.
1480 */
1481void
1482sas_rphy_remove(struct sas_rphy *rphy)
1483{
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001484 struct device *dev = &rphy->dev;
James Bottomley65c92b02006-06-28 12:22:50 -04001485 struct sas_port *parent = dev_to_sas_port(dev->parent);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001486
Christoph Hellwigd4054232006-01-04 13:45:20 +01001487 switch (rphy->identify.device_type) {
1488 case SAS_END_DEVICE:
1489 scsi_remove_target(dev);
1490 break;
1491 case SAS_EDGE_EXPANDER_DEVICE:
1492 case SAS_FANOUT_EXPANDER_DEVICE:
James Bottomley65c92b02006-06-28 12:22:50 -04001493 sas_remove_children(dev);
Christoph Hellwigd4054232006-01-04 13:45:20 +01001494 break;
1495 default:
1496 break;
1497 }
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001498
Christoph Hellwigfe8b2302005-09-25 23:10:33 +02001499 transport_remove_device(dev);
1500 device_del(dev);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001501
Christoph Hellwig33b114e2006-01-11 14:20:43 +01001502 parent->rphy = NULL;
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001503}
Darrick J. Wong6f63caa2007-01-26 14:08:43 -08001504EXPORT_SYMBOL(sas_rphy_remove);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001505
1506/**
1507 * scsi_is_sas_rphy -- check if a struct device represents a SAS remote PHY
1508 * @dev: device to check
1509 *
1510 * Returns:
1511 * %1 if the device represents a SAS remote PHY, %0 else
1512 */
1513int scsi_is_sas_rphy(const struct device *dev)
1514{
James Bottomley2f8600d2006-03-18 15:00:50 -06001515 return dev->release == sas_end_device_release ||
1516 dev->release == sas_expander_release;
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001517}
1518EXPORT_SYMBOL(scsi_is_sas_rphy);
1519
1520
1521/*
1522 * SCSI scan helper
1523 */
1524
Christoph Hellwige02f3f52006-01-13 19:04:00 +01001525static int sas_user_scan(struct Scsi_Host *shost, uint channel,
1526 uint id, uint lun)
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001527{
1528 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
1529 struct sas_rphy *rphy;
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001530
Christoph Hellwige02f3f52006-01-13 19:04:00 +01001531 mutex_lock(&sas_host->lock);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001532 list_for_each_entry(rphy, &sas_host->rphy_list, list) {
James Bottomley6d99a3f2006-05-19 10:49:37 -05001533 if (rphy->identify.device_type != SAS_END_DEVICE ||
1534 rphy->scsi_target_id == -1)
Christoph Hellwige02f3f52006-01-13 19:04:00 +01001535 continue;
1536
James Bottomleye8bf3942006-07-11 17:49:34 -04001537 if ((channel == SCAN_WILD_CARD || channel == 0) &&
Christoph Hellwige02f3f52006-01-13 19:04:00 +01001538 (id == SCAN_WILD_CARD || id == rphy->scsi_target_id)) {
James Bottomleye8bf3942006-07-11 17:49:34 -04001539 scsi_scan_target(&rphy->dev, 0,
Christoph Hellwige02f3f52006-01-13 19:04:00 +01001540 rphy->scsi_target_id, lun, 1);
1541 }
1542 }
1543 mutex_unlock(&sas_host->lock);
1544
1545 return 0;
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001546}
1547
1548
1549/*
1550 * Setup / Teardown code
1551 */
1552
James Bottomleyd24e1ee2006-09-06 19:25:22 -05001553#define SETUP_TEMPLATE(attrb, field, perm, test) \
James Bottomley42ab0362006-03-04 09:10:18 -06001554 i->private_##attrb[count] = class_device_attr_##field; \
1555 i->private_##attrb[count].attr.mode = perm; \
James Bottomley42ab0362006-03-04 09:10:18 -06001556 i->attrb[count] = &i->private_##attrb[count]; \
1557 if (test) \
1558 count++
1559
James Bottomleyd24e1ee2006-09-06 19:25:22 -05001560#define SETUP_TEMPLATE_RW(attrb, field, perm, test, ro_test, ro_perm) \
1561 i->private_##attrb[count] = class_device_attr_##field; \
1562 i->private_##attrb[count].attr.mode = perm; \
1563 if (ro_test) { \
1564 i->private_##attrb[count].attr.mode = ro_perm; \
1565 i->private_##attrb[count].store = NULL; \
1566 } \
1567 i->attrb[count] = &i->private_##attrb[count]; \
1568 if (test) \
1569 count++
James Bottomley42ab0362006-03-04 09:10:18 -06001570
1571#define SETUP_RPORT_ATTRIBUTE(field) \
1572 SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, 1)
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001573
James Bottomleydd9fbb522006-03-02 16:01:31 -06001574#define SETUP_OPTIONAL_RPORT_ATTRIBUTE(field, func) \
James Bottomley42ab0362006-03-04 09:10:18 -06001575 SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, i->f->func)
James Bottomleydd9fbb522006-03-02 16:01:31 -06001576
James Bottomley65c92b02006-06-28 12:22:50 -04001577#define SETUP_PHY_ATTRIBUTE(field) \
James Bottomley42ab0362006-03-04 09:10:18 -06001578 SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, 1)
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001579
James Bottomleyd24e1ee2006-09-06 19:25:22 -05001580#define SETUP_PHY_ATTRIBUTE_RW(field) \
1581 SETUP_TEMPLATE_RW(phy_attrs, field, S_IRUGO | S_IWUSR, 1, \
1582 !i->f->set_phy_speed, S_IRUGO)
1583
Darrick J. Wongacbf1672007-01-11 14:14:57 -08001584#define SETUP_OPTIONAL_PHY_ATTRIBUTE_RW(field, func) \
1585 SETUP_TEMPLATE_RW(phy_attrs, field, S_IRUGO | S_IWUSR, 1, \
1586 !i->f->func, S_IRUGO)
1587
James Bottomley65c92b02006-06-28 12:22:50 -04001588#define SETUP_PORT_ATTRIBUTE(field) \
1589 SETUP_TEMPLATE(port_attrs, field, S_IRUGO, 1)
1590
1591#define SETUP_OPTIONAL_PHY_ATTRIBUTE(field, func) \
James Bottomley42ab0362006-03-04 09:10:18 -06001592 SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, i->f->func)
James Bottomleydd9fbb522006-03-02 16:01:31 -06001593
James Bottomley65c92b02006-06-28 12:22:50 -04001594#define SETUP_PHY_ATTRIBUTE_WRONLY(field) \
Darrick J. Wongfe3b5bf2007-01-11 14:15:35 -08001595 SETUP_TEMPLATE(phy_attrs, field, S_IWUSR, 1)
Christoph Hellwig07ba3a92005-10-19 20:01:31 +02001596
James Bottomley65c92b02006-06-28 12:22:50 -04001597#define SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(field, func) \
Darrick J. Wongfe3b5bf2007-01-11 14:15:35 -08001598 SETUP_TEMPLATE(phy_attrs, field, S_IWUSR, i->f->func)
James Bottomleydd9fbb522006-03-02 16:01:31 -06001599
James Bottomley42ab0362006-03-04 09:10:18 -06001600#define SETUP_END_DEV_ATTRIBUTE(field) \
1601 SETUP_TEMPLATE(end_dev_attrs, field, S_IRUGO, 1)
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001602
James Bottomley79cb1812006-03-13 13:50:04 -06001603#define SETUP_EXPANDER_ATTRIBUTE(field) \
1604 SETUP_TEMPLATE(expander_attrs, expander_##field, S_IRUGO, 1)
1605
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001606/**
1607 * sas_attach_transport -- instantiate SAS transport template
1608 * @ft: SAS transport class function template
1609 */
1610struct scsi_transport_template *
1611sas_attach_transport(struct sas_function_template *ft)
1612{
1613 struct sas_internal *i;
1614 int count;
1615
Jes Sorensen24669f752006-01-16 10:31:18 -05001616 i = kzalloc(sizeof(struct sas_internal), GFP_KERNEL);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001617 if (!i)
1618 return NULL;
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001619
Christoph Hellwige02f3f52006-01-13 19:04:00 +01001620 i->t.user_scan = sas_user_scan;
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001621
1622 i->t.host_attrs.ac.attrs = &i->host_attrs[0];
1623 i->t.host_attrs.ac.class = &sas_host_class.class;
1624 i->t.host_attrs.ac.match = sas_host_match;
1625 transport_container_register(&i->t.host_attrs);
1626 i->t.host_size = sizeof(struct sas_host_attrs);
1627
1628 i->phy_attr_cont.ac.class = &sas_phy_class.class;
1629 i->phy_attr_cont.ac.attrs = &i->phy_attrs[0];
1630 i->phy_attr_cont.ac.match = sas_phy_match;
1631 transport_container_register(&i->phy_attr_cont);
1632
James Bottomley65c92b02006-06-28 12:22:50 -04001633 i->port_attr_cont.ac.class = &sas_port_class.class;
1634 i->port_attr_cont.ac.attrs = &i->port_attrs[0];
1635 i->port_attr_cont.ac.match = sas_port_match;
1636 transport_container_register(&i->port_attr_cont);
1637
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001638 i->rphy_attr_cont.ac.class = &sas_rphy_class.class;
1639 i->rphy_attr_cont.ac.attrs = &i->rphy_attrs[0];
1640 i->rphy_attr_cont.ac.match = sas_rphy_match;
1641 transport_container_register(&i->rphy_attr_cont);
1642
James Bottomley42ab0362006-03-04 09:10:18 -06001643 i->end_dev_attr_cont.ac.class = &sas_end_dev_class.class;
1644 i->end_dev_attr_cont.ac.attrs = &i->end_dev_attrs[0];
1645 i->end_dev_attr_cont.ac.match = sas_end_dev_match;
1646 transport_container_register(&i->end_dev_attr_cont);
1647
James Bottomley79cb1812006-03-13 13:50:04 -06001648 i->expander_attr_cont.ac.class = &sas_expander_class.class;
1649 i->expander_attr_cont.ac.attrs = &i->expander_attrs[0];
1650 i->expander_attr_cont.ac.match = sas_expander_match;
1651 transport_container_register(&i->expander_attr_cont);
1652
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001653 i->f = ft;
1654
1655 count = 0;
James Bottomley65c92b02006-06-28 12:22:50 -04001656 SETUP_PORT_ATTRIBUTE(num_phys);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001657 i->host_attrs[count] = NULL;
1658
1659 count = 0;
James Bottomley65c92b02006-06-28 12:22:50 -04001660 SETUP_PHY_ATTRIBUTE(initiator_port_protocols);
1661 SETUP_PHY_ATTRIBUTE(target_port_protocols);
1662 SETUP_PHY_ATTRIBUTE(device_type);
1663 SETUP_PHY_ATTRIBUTE(sas_address);
1664 SETUP_PHY_ATTRIBUTE(phy_identifier);
1665 //SETUP_PHY_ATTRIBUTE(port_identifier);
1666 SETUP_PHY_ATTRIBUTE(negotiated_linkrate);
1667 SETUP_PHY_ATTRIBUTE(minimum_linkrate_hw);
James Bottomleyd24e1ee2006-09-06 19:25:22 -05001668 SETUP_PHY_ATTRIBUTE_RW(minimum_linkrate);
James Bottomley65c92b02006-06-28 12:22:50 -04001669 SETUP_PHY_ATTRIBUTE(maximum_linkrate_hw);
James Bottomleyd24e1ee2006-09-06 19:25:22 -05001670 SETUP_PHY_ATTRIBUTE_RW(maximum_linkrate);
Christoph Hellwigc3ee74c2005-09-19 21:59:42 +02001671
James Bottomley65c92b02006-06-28 12:22:50 -04001672 SETUP_PHY_ATTRIBUTE(invalid_dword_count);
1673 SETUP_PHY_ATTRIBUTE(running_disparity_error_count);
1674 SETUP_PHY_ATTRIBUTE(loss_of_dword_sync_count);
1675 SETUP_PHY_ATTRIBUTE(phy_reset_problem_count);
1676 SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(link_reset, phy_reset);
1677 SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(hard_reset, phy_reset);
Darrick J. Wongacbf1672007-01-11 14:14:57 -08001678 SETUP_OPTIONAL_PHY_ATTRIBUTE_RW(enable, phy_enable);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001679 i->phy_attrs[count] = NULL;
1680
1681 count = 0;
James Bottomley65c92b02006-06-28 12:22:50 -04001682 SETUP_PORT_ATTRIBUTE(num_phys);
1683 i->port_attrs[count] = NULL;
1684
1685 count = 0;
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001686 SETUP_RPORT_ATTRIBUTE(rphy_initiator_port_protocols);
1687 SETUP_RPORT_ATTRIBUTE(rphy_target_port_protocols);
1688 SETUP_RPORT_ATTRIBUTE(rphy_device_type);
1689 SETUP_RPORT_ATTRIBUTE(rphy_sas_address);
1690 SETUP_RPORT_ATTRIBUTE(rphy_phy_identifier);
James Bottomleydd9fbb522006-03-02 16:01:31 -06001691 SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_enclosure_identifier,
1692 get_enclosure_identifier);
1693 SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_bay_identifier,
1694 get_bay_identifier);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001695 i->rphy_attrs[count] = NULL;
1696
James Bottomley42ab0362006-03-04 09:10:18 -06001697 count = 0;
1698 SETUP_END_DEV_ATTRIBUTE(end_dev_ready_led_meaning);
1699 SETUP_END_DEV_ATTRIBUTE(end_dev_I_T_nexus_loss_timeout);
1700 SETUP_END_DEV_ATTRIBUTE(end_dev_initiator_response_timeout);
1701 i->end_dev_attrs[count] = NULL;
1702
James Bottomley79cb1812006-03-13 13:50:04 -06001703 count = 0;
1704 SETUP_EXPANDER_ATTRIBUTE(vendor_id);
1705 SETUP_EXPANDER_ATTRIBUTE(product_id);
1706 SETUP_EXPANDER_ATTRIBUTE(product_rev);
1707 SETUP_EXPANDER_ATTRIBUTE(component_vendor_id);
1708 SETUP_EXPANDER_ATTRIBUTE(component_id);
1709 SETUP_EXPANDER_ATTRIBUTE(component_revision_id);
1710 SETUP_EXPANDER_ATTRIBUTE(level);
1711 i->expander_attrs[count] = NULL;
1712
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001713 return &i->t;
1714}
1715EXPORT_SYMBOL(sas_attach_transport);
1716
1717/**
1718 * sas_release_transport -- release SAS transport template instance
1719 * @t: transport template instance
1720 */
1721void sas_release_transport(struct scsi_transport_template *t)
1722{
1723 struct sas_internal *i = to_sas_internal(t);
1724
1725 transport_container_unregister(&i->t.host_attrs);
1726 transport_container_unregister(&i->phy_attr_cont);
James Bottomley65c92b02006-06-28 12:22:50 -04001727 transport_container_unregister(&i->port_attr_cont);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001728 transport_container_unregister(&i->rphy_attr_cont);
James Bottomleydb82f842006-03-09 22:06:36 -05001729 transport_container_unregister(&i->end_dev_attr_cont);
James Bottomley79cb1812006-03-13 13:50:04 -06001730 transport_container_unregister(&i->expander_attr_cont);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001731
1732 kfree(i);
1733}
1734EXPORT_SYMBOL(sas_release_transport);
1735
1736static __init int sas_transport_init(void)
1737{
1738 int error;
1739
1740 error = transport_class_register(&sas_host_class);
1741 if (error)
1742 goto out;
1743 error = transport_class_register(&sas_phy_class);
1744 if (error)
1745 goto out_unregister_transport;
James Bottomley65c92b02006-06-28 12:22:50 -04001746 error = transport_class_register(&sas_port_class);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001747 if (error)
1748 goto out_unregister_phy;
James Bottomley65c92b02006-06-28 12:22:50 -04001749 error = transport_class_register(&sas_rphy_class);
1750 if (error)
1751 goto out_unregister_port;
James Bottomley42ab0362006-03-04 09:10:18 -06001752 error = transport_class_register(&sas_end_dev_class);
1753 if (error)
1754 goto out_unregister_rphy;
James Bottomley79cb1812006-03-13 13:50:04 -06001755 error = transport_class_register(&sas_expander_class);
1756 if (error)
1757 goto out_unregister_end_dev;
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001758
1759 return 0;
1760
James Bottomley79cb1812006-03-13 13:50:04 -06001761 out_unregister_end_dev:
1762 transport_class_unregister(&sas_end_dev_class);
James Bottomley42ab0362006-03-04 09:10:18 -06001763 out_unregister_rphy:
1764 transport_class_unregister(&sas_rphy_class);
James Bottomley65c92b02006-06-28 12:22:50 -04001765 out_unregister_port:
1766 transport_class_unregister(&sas_port_class);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001767 out_unregister_phy:
1768 transport_class_unregister(&sas_phy_class);
1769 out_unregister_transport:
1770 transport_class_unregister(&sas_host_class);
1771 out:
1772 return error;
1773
1774}
1775
1776static void __exit sas_transport_exit(void)
1777{
1778 transport_class_unregister(&sas_host_class);
1779 transport_class_unregister(&sas_phy_class);
James Bottomley65c92b02006-06-28 12:22:50 -04001780 transport_class_unregister(&sas_port_class);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001781 transport_class_unregister(&sas_rphy_class);
James Bottomley42ab0362006-03-04 09:10:18 -06001782 transport_class_unregister(&sas_end_dev_class);
James Bottomley79cb1812006-03-13 13:50:04 -06001783 transport_class_unregister(&sas_expander_class);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001784}
1785
1786MODULE_AUTHOR("Christoph Hellwig");
Alexis Bruemmer86b9c4c2007-01-16 15:36:12 -08001787MODULE_DESCRIPTION("SAS Transport Attributes");
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001788MODULE_LICENSE("GPL");
1789
1790module_init(sas_transport_init);
1791module_exit(sas_transport_exit);