blob: 366609386be108341875da60d0f58ac02583d6d0 [file] [log] [blame]
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,
Joe Perchesb1c11812008-02-03 17:28:22 +02009 * and various sysfs attributes to expose these topologies and management
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +020010 * 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 */
Tony Jonesee959b02008-02-22 00:13:36 +010056#define SAS_DEVICE_ATTR(_prefix,_name,_mode,_show,_store) \
57 struct device_attribute dev_attr_##_prefix##_##_name = \
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +020058 __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);
James Bottomley2d507a02007-12-29 10:59:53 -0600176 req->errors = ret;
FUJITA Tomonori7aa68e82007-07-09 12:52:06 +0900177
178 spin_lock_irq(q->queue_lock);
179
180 req->end_io(req, ret);
181 }
182}
183
184static void sas_host_smp_request(struct request_queue *q)
185{
186 sas_smp_request(q, (struct Scsi_Host *)q->queuedata, NULL);
187}
188
189static void sas_non_host_smp_request(struct request_queue *q)
190{
191 struct sas_rphy *rphy = q->queuedata;
192 sas_smp_request(q, rphy_to_shost(rphy), rphy);
193}
194
FUJITA Tomonori93c20a52008-04-19 00:43:15 +0900195static void sas_host_release(struct device *dev)
196{
197 struct Scsi_Host *shost = dev_to_shost(dev);
198 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
199 struct request_queue *q = sas_host->q;
200
201 if (q)
202 blk_cleanup_queue(q);
203}
204
James Bottomley39dca552007-07-20 18:22:17 -0500205static int sas_bsg_initialize(struct Scsi_Host *shost, struct sas_rphy *rphy)
FUJITA Tomonori7aa68e82007-07-09 12:52:06 +0900206{
207 struct request_queue *q;
208 int error;
James Bottomley39dca552007-07-20 18:22:17 -0500209 struct device *dev;
210 char namebuf[BUS_ID_SIZE];
211 const char *name;
FUJITA Tomonori93c20a52008-04-19 00:43:15 +0900212 void (*release)(struct device *);
FUJITA Tomonori7aa68e82007-07-09 12:52:06 +0900213
214 if (!to_sas_internal(shost->transportt)->f->smp_handler) {
215 printk("%s can't handle SMP requests\n", shost->hostt->name);
216 return 0;
217 }
218
James Bottomley39dca552007-07-20 18:22:17 -0500219 if (rphy) {
FUJITA Tomonori7aa68e82007-07-09 12:52:06 +0900220 q = blk_init_queue(sas_non_host_smp_request, NULL);
James Bottomley39dca552007-07-20 18:22:17 -0500221 dev = &rphy->dev;
222 name = dev->bus_id;
FUJITA Tomonori93c20a52008-04-19 00:43:15 +0900223 release = NULL;
James Bottomley39dca552007-07-20 18:22:17 -0500224 } else {
FUJITA Tomonori7aa68e82007-07-09 12:52:06 +0900225 q = blk_init_queue(sas_host_smp_request, NULL);
James Bottomley39dca552007-07-20 18:22:17 -0500226 dev = &shost->shost_gendev;
227 snprintf(namebuf, sizeof(namebuf),
228 "sas_host%d", shost->host_no);
229 name = namebuf;
FUJITA Tomonori93c20a52008-04-19 00:43:15 +0900230 release = sas_host_release;
James Bottomley39dca552007-07-20 18:22:17 -0500231 }
FUJITA Tomonori7aa68e82007-07-09 12:52:06 +0900232 if (!q)
233 return -ENOMEM;
234
FUJITA Tomonori93c20a52008-04-19 00:43:15 +0900235 error = bsg_register_queue(q, dev, name, release);
FUJITA Tomonori7aa68e82007-07-09 12:52:06 +0900236 if (error) {
237 blk_cleanup_queue(q);
238 return -ENOMEM;
239 }
240
241 if (rphy)
James Bottomleyb6aff662007-07-20 11:10:05 -0500242 rphy->q = q;
243 else
244 to_sas_host_attrs(shost)->q = q;
245
246 if (rphy)
FUJITA Tomonori7aa68e82007-07-09 12:52:06 +0900247 q->queuedata = rphy;
248 else
249 q->queuedata = shost;
250
Nick Piggin75ad23b2008-04-29 14:48:33 +0200251 queue_flag_set_unlocked(QUEUE_FLAG_BIDI, q);
FUJITA Tomonori7aa68e82007-07-09 12:52:06 +0900252 return 0;
253}
254
James Bottomleyb6aff662007-07-20 11:10:05 -0500255static void sas_bsg_remove(struct Scsi_Host *shost, struct sas_rphy *rphy)
256{
257 struct request_queue *q;
258
259 if (rphy)
260 q = rphy->q;
261 else
262 q = to_sas_host_attrs(shost)->q;
263
264 if (!q)
265 return;
266
267 bsg_unregister_queue(q);
James Bottomleyb6aff662007-07-20 11:10:05 -0500268}
269
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200270/*
271 * SAS host attributes
272 */
273
James Bottomley37be6ee2005-09-09 18:38:27 -0500274static int sas_host_setup(struct transport_container *tc, struct device *dev,
Tony Jonesee959b02008-02-22 00:13:36 +0100275 struct device *cdev)
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200276{
277 struct Scsi_Host *shost = dev_to_shost(dev);
278 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
279
280 INIT_LIST_HEAD(&sas_host->rphy_list);
Christoph Hellwige02f3f52006-01-13 19:04:00 +0100281 mutex_init(&sas_host->lock);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200282 sas_host->next_target_id = 0;
James Bottomley79cb1812006-03-13 13:50:04 -0600283 sas_host->next_expander_id = 0;
James Bottomleyc9fefeb2006-07-02 11:10:18 -0500284 sas_host->next_port_id = 0;
FUJITA Tomonori7aa68e82007-07-09 12:52:06 +0900285
James Bottomley39dca552007-07-20 18:22:17 -0500286 if (sas_bsg_initialize(shost, NULL))
FUJITA Tomonori7aa68e82007-07-09 12:52:06 +0900287 dev_printk(KERN_ERR, dev, "fail to a bsg device %d\n",
288 shost->host_no);
289
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200290 return 0;
291}
292
James Bottomleyb6aff662007-07-20 11:10:05 -0500293static int sas_host_remove(struct transport_container *tc, struct device *dev,
Tony Jonesee959b02008-02-22 00:13:36 +0100294 struct device *cdev)
James Bottomleyb6aff662007-07-20 11:10:05 -0500295{
296 struct Scsi_Host *shost = dev_to_shost(dev);
297
298 sas_bsg_remove(shost, NULL);
299
300 return 0;
301}
302
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200303static DECLARE_TRANSPORT_CLASS(sas_host_class,
James Bottomleyb6aff662007-07-20 11:10:05 -0500304 "sas_host", sas_host_setup, sas_host_remove, NULL);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200305
306static int sas_host_match(struct attribute_container *cont,
307 struct device *dev)
308{
309 struct Scsi_Host *shost;
310 struct sas_internal *i;
311
312 if (!scsi_is_host_device(dev))
313 return 0;
314 shost = dev_to_shost(dev);
315
316 if (!shost->transportt)
317 return 0;
318 if (shost->transportt->host_attrs.ac.class !=
319 &sas_host_class.class)
320 return 0;
321
322 i = to_sas_internal(shost->transportt);
323 return &i->t.host_attrs.ac == cont;
324}
325
326static int do_sas_phy_delete(struct device *dev, void *data)
327{
James Bottomley65c92b02006-06-28 12:22:50 -0400328 int pass = (int)(unsigned long)data;
329
330 if (pass == 0 && scsi_is_sas_port(dev))
331 sas_port_delete(dev_to_sas_port(dev));
332 else if (pass == 1 && scsi_is_sas_phy(dev))
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200333 sas_phy_delete(dev_to_phy(dev));
334 return 0;
335}
336
337/**
Rob Landleyeb448202007-11-03 13:30:39 -0500338 * sas_remove_children - tear down a devices SAS data structures
James Bottomley65c92b02006-06-28 12:22:50 -0400339 * @dev: device belonging to the sas object
340 *
341 * Removes all SAS PHYs and remote PHYs for a given object
342 */
343void sas_remove_children(struct device *dev)
344{
345 device_for_each_child(dev, (void *)0, do_sas_phy_delete);
346 device_for_each_child(dev, (void *)1, do_sas_phy_delete);
347}
348EXPORT_SYMBOL(sas_remove_children);
349
350/**
Rob Landleyeb448202007-11-03 13:30:39 -0500351 * sas_remove_host - tear down a Scsi_Host's SAS data structures
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200352 * @shost: Scsi Host that is torn down
353 *
354 * Removes all SAS PHYs and remote PHYs for a given Scsi_Host.
355 * Must be called just before scsi_remove_host for SAS HBAs.
356 */
357void sas_remove_host(struct Scsi_Host *shost)
358{
James Bottomley65c92b02006-06-28 12:22:50 -0400359 sas_remove_children(&shost->shost_gendev);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200360}
361EXPORT_SYMBOL(sas_remove_host);
362
363
364/*
James Bottomley65c92b02006-06-28 12:22:50 -0400365 * SAS Phy attributes
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200366 */
367
368#define sas_phy_show_simple(field, name, format_string, cast) \
369static ssize_t \
Tony Jonesee959b02008-02-22 00:13:36 +0100370show_sas_phy_##name(struct device *dev, \
371 struct device_attribute *attr, char *buf) \
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200372{ \
Tony Jonesee959b02008-02-22 00:13:36 +0100373 struct sas_phy *phy = transport_class_to_phy(dev); \
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200374 \
375 return snprintf(buf, 20, format_string, cast phy->field); \
376}
377
378#define sas_phy_simple_attr(field, name, format_string, type) \
379 sas_phy_show_simple(field, name, format_string, (type)) \
Tony Jonesee959b02008-02-22 00:13:36 +0100380static DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL)
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200381
382#define sas_phy_show_protocol(field, name) \
383static ssize_t \
Tony Jonesee959b02008-02-22 00:13:36 +0100384show_sas_phy_##name(struct device *dev, \
385 struct device_attribute *attr, char *buf) \
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200386{ \
Tony Jonesee959b02008-02-22 00:13:36 +0100387 struct sas_phy *phy = transport_class_to_phy(dev); \
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200388 \
389 if (!phy->field) \
390 return snprintf(buf, 20, "none\n"); \
391 return get_sas_protocol_names(phy->field, buf); \
392}
393
394#define sas_phy_protocol_attr(field, name) \
395 sas_phy_show_protocol(field, name) \
Tony Jonesee959b02008-02-22 00:13:36 +0100396static DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL)
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200397
398#define sas_phy_show_linkspeed(field) \
399static ssize_t \
Tony Jonesee959b02008-02-22 00:13:36 +0100400show_sas_phy_##field(struct device *dev, \
401 struct device_attribute *attr, char *buf) \
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200402{ \
Tony Jonesee959b02008-02-22 00:13:36 +0100403 struct sas_phy *phy = transport_class_to_phy(dev); \
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200404 \
405 return get_sas_linkspeed_names(phy->field, buf); \
406}
407
James Bottomleyd24e1ee2006-09-06 19:25:22 -0500408/* Fudge to tell if we're minimum or maximum */
409#define sas_phy_store_linkspeed(field) \
410static ssize_t \
Tony Jonesee959b02008-02-22 00:13:36 +0100411store_sas_phy_##field(struct device *dev, \
412 struct device_attribute *attr, \
413 const char *buf, size_t count) \
James Bottomleyd24e1ee2006-09-06 19:25:22 -0500414{ \
Tony Jonesee959b02008-02-22 00:13:36 +0100415 struct sas_phy *phy = transport_class_to_phy(dev); \
James Bottomleyd24e1ee2006-09-06 19:25:22 -0500416 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \
417 struct sas_internal *i = to_sas_internal(shost->transportt); \
418 u32 value; \
419 struct sas_phy_linkrates rates = {0}; \
420 int error; \
421 \
422 error = set_sas_linkspeed_names(&value, buf); \
423 if (error) \
424 return error; \
425 rates.field = value; \
426 error = i->f->set_phy_speed(phy, &rates); \
427 \
428 return error ? error : count; \
429}
430
431#define sas_phy_linkspeed_rw_attr(field) \
432 sas_phy_show_linkspeed(field) \
433 sas_phy_store_linkspeed(field) \
Tony Jonesee959b02008-02-22 00:13:36 +0100434static DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, \
James Bottomleyd24e1ee2006-09-06 19:25:22 -0500435 store_sas_phy_##field)
436
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200437#define sas_phy_linkspeed_attr(field) \
438 sas_phy_show_linkspeed(field) \
Tony Jonesee959b02008-02-22 00:13:36 +0100439static DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL)
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200440
James Bottomleyd24e1ee2006-09-06 19:25:22 -0500441
Christoph Hellwigc3ee74c2005-09-19 21:59:42 +0200442#define sas_phy_show_linkerror(field) \
443static ssize_t \
Tony Jonesee959b02008-02-22 00:13:36 +0100444show_sas_phy_##field(struct device *dev, \
445 struct device_attribute *attr, char *buf) \
Christoph Hellwigc3ee74c2005-09-19 21:59:42 +0200446{ \
Tony Jonesee959b02008-02-22 00:13:36 +0100447 struct sas_phy *phy = transport_class_to_phy(dev); \
Christoph Hellwigc3ee74c2005-09-19 21:59:42 +0200448 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \
449 struct sas_internal *i = to_sas_internal(shost->transportt); \
450 int error; \
451 \
James Bottomleydd9fbb522006-03-02 16:01:31 -0600452 error = i->f->get_linkerrors ? i->f->get_linkerrors(phy) : 0; \
Christoph Hellwigc3ee74c2005-09-19 21:59:42 +0200453 if (error) \
454 return error; \
455 return snprintf(buf, 20, "%u\n", phy->field); \
456}
457
458#define sas_phy_linkerror_attr(field) \
459 sas_phy_show_linkerror(field) \
Tony Jonesee959b02008-02-22 00:13:36 +0100460static DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL)
Christoph Hellwigc3ee74c2005-09-19 21:59:42 +0200461
462
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200463static ssize_t
Tony Jonesee959b02008-02-22 00:13:36 +0100464show_sas_device_type(struct device *dev,
465 struct device_attribute *attr, char *buf)
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200466{
Tony Jonesee959b02008-02-22 00:13:36 +0100467 struct sas_phy *phy = transport_class_to_phy(dev);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200468
469 if (!phy->identify.device_type)
470 return snprintf(buf, 20, "none\n");
471 return get_sas_device_type_names(phy->identify.device_type, buf);
472}
Tony Jonesee959b02008-02-22 00:13:36 +0100473static DEVICE_ATTR(device_type, S_IRUGO, show_sas_device_type, NULL);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200474
Tony Jonesee959b02008-02-22 00:13:36 +0100475static ssize_t do_sas_phy_enable(struct device *dev,
Darrick J. Wongacbf1672007-01-11 14:14:57 -0800476 size_t count, int enable)
477{
Tony Jonesee959b02008-02-22 00:13:36 +0100478 struct sas_phy *phy = transport_class_to_phy(dev);
Darrick J. Wongacbf1672007-01-11 14:14:57 -0800479 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
480 struct sas_internal *i = to_sas_internal(shost->transportt);
481 int error;
482
483 error = i->f->phy_enable(phy, enable);
484 if (error)
485 return error;
486 phy->enabled = enable;
487 return count;
488};
489
Tony Jonesee959b02008-02-22 00:13:36 +0100490static ssize_t
491store_sas_phy_enable(struct device *dev, struct device_attribute *attr,
492 const char *buf, size_t count)
Darrick J. Wongacbf1672007-01-11 14:14:57 -0800493{
494 if (count < 1)
495 return -EINVAL;
496
497 switch (buf[0]) {
498 case '0':
Tony Jonesee959b02008-02-22 00:13:36 +0100499 do_sas_phy_enable(dev, count, 0);
Darrick J. Wongacbf1672007-01-11 14:14:57 -0800500 break;
501 case '1':
Tony Jonesee959b02008-02-22 00:13:36 +0100502 do_sas_phy_enable(dev, count, 1);
Darrick J. Wongacbf1672007-01-11 14:14:57 -0800503 break;
504 default:
505 return -EINVAL;
506 }
507
508 return count;
509}
510
Tony Jonesee959b02008-02-22 00:13:36 +0100511static ssize_t
512show_sas_phy_enable(struct device *dev, struct device_attribute *attr,
513 char *buf)
Darrick J. Wongacbf1672007-01-11 14:14:57 -0800514{
Tony Jonesee959b02008-02-22 00:13:36 +0100515 struct sas_phy *phy = transport_class_to_phy(dev);
Darrick J. Wongacbf1672007-01-11 14:14:57 -0800516
517 return snprintf(buf, 20, "%d", phy->enabled);
518}
519
Tony Jonesee959b02008-02-22 00:13:36 +0100520static DEVICE_ATTR(enable, S_IRUGO | S_IWUSR, show_sas_phy_enable,
Darrick J. Wongacbf1672007-01-11 14:14:57 -0800521 store_sas_phy_enable);
522
Tony Jonesee959b02008-02-22 00:13:36 +0100523static ssize_t
524do_sas_phy_reset(struct device *dev, size_t count, int hard_reset)
Christoph Hellwig07ba3a92005-10-19 20:01:31 +0200525{
Tony Jonesee959b02008-02-22 00:13:36 +0100526 struct sas_phy *phy = transport_class_to_phy(dev);
Christoph Hellwig07ba3a92005-10-19 20:01:31 +0200527 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
528 struct sas_internal *i = to_sas_internal(shost->transportt);
529 int error;
530
Christoph Hellwig07ba3a92005-10-19 20:01:31 +0200531 error = i->f->phy_reset(phy, hard_reset);
532 if (error)
533 return error;
534 return count;
535};
536
Tony Jonesee959b02008-02-22 00:13:36 +0100537static ssize_t
538store_sas_link_reset(struct device *dev, struct device_attribute *attr,
539 const char *buf, size_t count)
Christoph Hellwig07ba3a92005-10-19 20:01:31 +0200540{
Tony Jonesee959b02008-02-22 00:13:36 +0100541 return do_sas_phy_reset(dev, count, 0);
Christoph Hellwig07ba3a92005-10-19 20:01:31 +0200542}
Tony Jonesee959b02008-02-22 00:13:36 +0100543static DEVICE_ATTR(link_reset, S_IWUSR, NULL, store_sas_link_reset);
Christoph Hellwig07ba3a92005-10-19 20:01:31 +0200544
Tony Jonesee959b02008-02-22 00:13:36 +0100545static ssize_t
546store_sas_hard_reset(struct device *dev, struct device_attribute *attr,
547 const char *buf, size_t count)
Christoph Hellwig07ba3a92005-10-19 20:01:31 +0200548{
Tony Jonesee959b02008-02-22 00:13:36 +0100549 return do_sas_phy_reset(dev, count, 1);
Christoph Hellwig07ba3a92005-10-19 20:01:31 +0200550}
Tony Jonesee959b02008-02-22 00:13:36 +0100551static DEVICE_ATTR(hard_reset, S_IWUSR, NULL, store_sas_hard_reset);
Christoph Hellwig07ba3a92005-10-19 20:01:31 +0200552
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200553sas_phy_protocol_attr(identify.initiator_port_protocols,
554 initiator_port_protocols);
555sas_phy_protocol_attr(identify.target_port_protocols,
556 target_port_protocols);
557sas_phy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n",
558 unsigned long long);
559sas_phy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8);
James Bottomleyc9fefeb2006-07-02 11:10:18 -0500560//sas_phy_simple_attr(port_identifier, port_identifier, "%d\n", int);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200561sas_phy_linkspeed_attr(negotiated_linkrate);
562sas_phy_linkspeed_attr(minimum_linkrate_hw);
James Bottomleyd24e1ee2006-09-06 19:25:22 -0500563sas_phy_linkspeed_rw_attr(minimum_linkrate);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200564sas_phy_linkspeed_attr(maximum_linkrate_hw);
James Bottomleyd24e1ee2006-09-06 19:25:22 -0500565sas_phy_linkspeed_rw_attr(maximum_linkrate);
Christoph Hellwigc3ee74c2005-09-19 21:59:42 +0200566sas_phy_linkerror_attr(invalid_dword_count);
567sas_phy_linkerror_attr(running_disparity_error_count);
568sas_phy_linkerror_attr(loss_of_dword_sync_count);
569sas_phy_linkerror_attr(phy_reset_problem_count);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200570
571
572static DECLARE_TRANSPORT_CLASS(sas_phy_class,
573 "sas_phy", NULL, NULL, NULL);
574
575static int sas_phy_match(struct attribute_container *cont, struct device *dev)
576{
577 struct Scsi_Host *shost;
578 struct sas_internal *i;
579
580 if (!scsi_is_sas_phy(dev))
581 return 0;
582 shost = dev_to_shost(dev->parent);
583
584 if (!shost->transportt)
585 return 0;
586 if (shost->transportt->host_attrs.ac.class !=
587 &sas_host_class.class)
588 return 0;
589
590 i = to_sas_internal(shost->transportt);
591 return &i->phy_attr_cont.ac == cont;
592}
593
594static void sas_phy_release(struct device *dev)
595{
596 struct sas_phy *phy = dev_to_phy(dev);
597
598 put_device(dev->parent);
599 kfree(phy);
600}
601
602/**
Rob Landleyeb448202007-11-03 13:30:39 -0500603 * sas_phy_alloc - allocates and initialize a SAS PHY structure
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200604 * @parent: Parent device
Moore, Ericd99ca412006-01-26 16:20:02 -0700605 * @number: Phy index
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200606 *
607 * Allocates an SAS PHY structure. It will be added in the device tree
608 * below the device specified by @parent, which has to be either a Scsi_Host
609 * or sas_rphy.
610 *
611 * Returns:
612 * SAS PHY allocated or %NULL if the allocation failed.
613 */
614struct sas_phy *sas_phy_alloc(struct device *parent, int number)
615{
616 struct Scsi_Host *shost = dev_to_shost(parent);
617 struct sas_phy *phy;
618
Jes Sorensen24669f752006-01-16 10:31:18 -0500619 phy = kzalloc(sizeof(*phy), GFP_KERNEL);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200620 if (!phy)
621 return NULL;
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200622
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200623 phy->number = number;
Darrick J. Wongacbf1672007-01-11 14:14:57 -0800624 phy->enabled = 1;
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200625
626 device_initialize(&phy->dev);
627 phy->dev.parent = get_device(parent);
628 phy->dev.release = sas_phy_release;
James Bottomley65c92b02006-06-28 12:22:50 -0400629 INIT_LIST_HEAD(&phy->port_siblings);
James Bottomley79cb1812006-03-13 13:50:04 -0600630 if (scsi_is_sas_expander_device(parent)) {
631 struct sas_rphy *rphy = dev_to_rphy(parent);
James Bottomley65c92b02006-06-28 12:22:50 -0400632 sprintf(phy->dev.bus_id, "phy-%d:%d:%d", shost->host_no,
James Bottomley79cb1812006-03-13 13:50:04 -0600633 rphy->scsi_target_id, number);
634 } else
635 sprintf(phy->dev.bus_id, "phy-%d:%d", shost->host_no, number);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200636
637 transport_setup_device(&phy->dev);
638
639 return phy;
640}
641EXPORT_SYMBOL(sas_phy_alloc);
642
643/**
Rob Landleyeb448202007-11-03 13:30:39 -0500644 * sas_phy_add - add a SAS PHY to the device hierarchy
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200645 * @phy: The PHY to be added
646 *
647 * Publishes a SAS PHY to the rest of the system.
648 */
649int sas_phy_add(struct sas_phy *phy)
650{
651 int error;
652
653 error = device_add(&phy->dev);
654 if (!error) {
655 transport_add_device(&phy->dev);
656 transport_configure_device(&phy->dev);
657 }
658
659 return error;
660}
661EXPORT_SYMBOL(sas_phy_add);
662
663/**
Rob Landleyeb448202007-11-03 13:30:39 -0500664 * sas_phy_free - free a SAS PHY
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200665 * @phy: SAS PHY to free
666 *
667 * Frees the specified SAS PHY.
668 *
669 * Note:
670 * This function must only be called on a PHY that has not
671 * sucessfully been added using sas_phy_add().
672 */
673void sas_phy_free(struct sas_phy *phy)
674{
675 transport_destroy_device(&phy->dev);
Mike Anderson92aab642006-03-27 09:37:28 -0800676 put_device(&phy->dev);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200677}
678EXPORT_SYMBOL(sas_phy_free);
679
680/**
Rob Landleyeb448202007-11-03 13:30:39 -0500681 * sas_phy_delete - remove SAS PHY
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200682 * @phy: SAS PHY to remove
683 *
684 * Removes the specified SAS PHY. If the SAS PHY has an
685 * associated remote PHY it is removed before.
686 */
687void
688sas_phy_delete(struct sas_phy *phy)
689{
690 struct device *dev = &phy->dev;
691
James Bottomley65c92b02006-06-28 12:22:50 -0400692 /* this happens if the phy is still part of a port when deleted */
693 BUG_ON(!list_empty(&phy->port_siblings));
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200694
695 transport_remove_device(dev);
696 device_del(dev);
697 transport_destroy_device(dev);
Mike Anderson92aab642006-03-27 09:37:28 -0800698 put_device(dev);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200699}
700EXPORT_SYMBOL(sas_phy_delete);
701
702/**
Rob Landleyeb448202007-11-03 13:30:39 -0500703 * scsi_is_sas_phy - check if a struct device represents a SAS PHY
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200704 * @dev: device to check
705 *
706 * Returns:
707 * %1 if the device represents a SAS PHY, %0 else
708 */
709int scsi_is_sas_phy(const struct device *dev)
710{
711 return dev->release == sas_phy_release;
712}
713EXPORT_SYMBOL(scsi_is_sas_phy);
714
715/*
James Bottomley65c92b02006-06-28 12:22:50 -0400716 * SAS Port attributes
717 */
718#define sas_port_show_simple(field, name, format_string, cast) \
719static ssize_t \
Tony Jonesee959b02008-02-22 00:13:36 +0100720show_sas_port_##name(struct device *dev, \
721 struct device_attribute *attr, char *buf) \
James Bottomley65c92b02006-06-28 12:22:50 -0400722{ \
Tony Jonesee959b02008-02-22 00:13:36 +0100723 struct sas_port *port = transport_class_to_sas_port(dev); \
James Bottomley65c92b02006-06-28 12:22:50 -0400724 \
725 return snprintf(buf, 20, format_string, cast port->field); \
726}
727
728#define sas_port_simple_attr(field, name, format_string, type) \
729 sas_port_show_simple(field, name, format_string, (type)) \
Tony Jonesee959b02008-02-22 00:13:36 +0100730static DEVICE_ATTR(name, S_IRUGO, show_sas_port_##name, NULL)
James Bottomley65c92b02006-06-28 12:22:50 -0400731
732sas_port_simple_attr(num_phys, num_phys, "%d\n", int);
733
734static DECLARE_TRANSPORT_CLASS(sas_port_class,
735 "sas_port", NULL, NULL, NULL);
736
737static int sas_port_match(struct attribute_container *cont, struct device *dev)
738{
739 struct Scsi_Host *shost;
740 struct sas_internal *i;
741
742 if (!scsi_is_sas_port(dev))
743 return 0;
744 shost = dev_to_shost(dev->parent);
745
746 if (!shost->transportt)
747 return 0;
748 if (shost->transportt->host_attrs.ac.class !=
749 &sas_host_class.class)
750 return 0;
751
752 i = to_sas_internal(shost->transportt);
753 return &i->port_attr_cont.ac == cont;
754}
755
756
757static void sas_port_release(struct device *dev)
758{
759 struct sas_port *port = dev_to_sas_port(dev);
760
761 BUG_ON(!list_empty(&port->phy_list));
762
763 put_device(dev->parent);
764 kfree(port);
765}
766
767static void sas_port_create_link(struct sas_port *port,
768 struct sas_phy *phy)
769{
Darrick J. Wong21434962007-01-26 14:08:46 -0800770 int res;
771
772 res = sysfs_create_link(&port->dev.kobj, &phy->dev.kobj,
773 phy->dev.bus_id);
774 if (res)
775 goto err;
776 res = sysfs_create_link(&phy->dev.kobj, &port->dev.kobj, "port");
777 if (res)
778 goto err;
779 return;
780err:
781 printk(KERN_ERR "%s: Cannot create port links, err=%d\n",
Harvey Harrisoncadbd4a2008-07-03 23:47:27 -0700782 __func__, res);
James Bottomley65c92b02006-06-28 12:22:50 -0400783}
784
785static void sas_port_delete_link(struct sas_port *port,
786 struct sas_phy *phy)
787{
788 sysfs_remove_link(&port->dev.kobj, phy->dev.bus_id);
789 sysfs_remove_link(&phy->dev.kobj, "port");
790}
791
792/** sas_port_alloc - allocate and initialize a SAS port structure
793 *
794 * @parent: parent device
795 * @port_id: port number
796 *
797 * Allocates a SAS port structure. It will be added to the device tree
798 * below the device specified by @parent which must be either a Scsi_Host
799 * or a sas_expander_device.
800 *
801 * Returns %NULL on error
802 */
803struct sas_port *sas_port_alloc(struct device *parent, int port_id)
804{
805 struct Scsi_Host *shost = dev_to_shost(parent);
806 struct sas_port *port;
807
808 port = kzalloc(sizeof(*port), GFP_KERNEL);
809 if (!port)
810 return NULL;
811
812 port->port_identifier = port_id;
813
814 device_initialize(&port->dev);
815
816 port->dev.parent = get_device(parent);
817 port->dev.release = sas_port_release;
818
819 mutex_init(&port->phy_list_mutex);
820 INIT_LIST_HEAD(&port->phy_list);
821
822 if (scsi_is_sas_expander_device(parent)) {
823 struct sas_rphy *rphy = dev_to_rphy(parent);
824 sprintf(port->dev.bus_id, "port-%d:%d:%d", shost->host_no,
825 rphy->scsi_target_id, port->port_identifier);
826 } else
827 sprintf(port->dev.bus_id, "port-%d:%d", shost->host_no,
828 port->port_identifier);
829
830 transport_setup_device(&port->dev);
831
832 return port;
833}
834EXPORT_SYMBOL(sas_port_alloc);
835
James Bottomleyc9fefeb2006-07-02 11:10:18 -0500836/** sas_port_alloc_num - allocate and initialize a SAS port structure
837 *
838 * @parent: parent device
839 *
840 * Allocates a SAS port structure and a number to go with it. This
841 * interface is really for adapters where the port number has no
842 * meansing, so the sas class should manage them. It will be added to
843 * the device tree below the device specified by @parent which must be
844 * either a Scsi_Host or a sas_expander_device.
845 *
846 * Returns %NULL on error
847 */
848struct sas_port *sas_port_alloc_num(struct device *parent)
849{
850 int index;
851 struct Scsi_Host *shost = dev_to_shost(parent);
852 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
853
854 /* FIXME: use idr for this eventually */
855 mutex_lock(&sas_host->lock);
856 if (scsi_is_sas_expander_device(parent)) {
857 struct sas_rphy *rphy = dev_to_rphy(parent);
858 struct sas_expander_device *exp = rphy_to_expander_device(rphy);
859
860 index = exp->next_port_id++;
861 } else
862 index = sas_host->next_port_id++;
863 mutex_unlock(&sas_host->lock);
864 return sas_port_alloc(parent, index);
865}
866EXPORT_SYMBOL(sas_port_alloc_num);
867
James Bottomley65c92b02006-06-28 12:22:50 -0400868/**
869 * sas_port_add - add a SAS port to the device hierarchy
James Bottomley65c92b02006-06-28 12:22:50 -0400870 * @port: port to be added
871 *
872 * publishes a port to the rest of the system
873 */
874int sas_port_add(struct sas_port *port)
875{
876 int error;
877
878 /* No phys should be added until this is made visible */
879 BUG_ON(!list_empty(&port->phy_list));
880
881 error = device_add(&port->dev);
882
883 if (error)
884 return error;
885
886 transport_add_device(&port->dev);
887 transport_configure_device(&port->dev);
888
889 return 0;
890}
891EXPORT_SYMBOL(sas_port_add);
892
893/**
Rob Landleyeb448202007-11-03 13:30:39 -0500894 * sas_port_free - free a SAS PORT
James Bottomley65c92b02006-06-28 12:22:50 -0400895 * @port: SAS PORT to free
896 *
897 * Frees the specified SAS PORT.
898 *
899 * Note:
900 * This function must only be called on a PORT that has not
901 * sucessfully been added using sas_port_add().
902 */
903void sas_port_free(struct sas_port *port)
904{
905 transport_destroy_device(&port->dev);
906 put_device(&port->dev);
907}
908EXPORT_SYMBOL(sas_port_free);
909
910/**
Rob Landleyeb448202007-11-03 13:30:39 -0500911 * sas_port_delete - remove SAS PORT
James Bottomley65c92b02006-06-28 12:22:50 -0400912 * @port: SAS PORT to remove
913 *
914 * Removes the specified SAS PORT. If the SAS PORT has an
915 * associated phys, unlink them from the port as well.
916 */
917void sas_port_delete(struct sas_port *port)
918{
919 struct device *dev = &port->dev;
920 struct sas_phy *phy, *tmp_phy;
921
922 if (port->rphy) {
923 sas_rphy_delete(port->rphy);
924 port->rphy = NULL;
925 }
926
927 mutex_lock(&port->phy_list_mutex);
928 list_for_each_entry_safe(phy, tmp_phy, &port->phy_list,
929 port_siblings) {
930 sas_port_delete_link(port, phy);
931 list_del_init(&phy->port_siblings);
932 }
933 mutex_unlock(&port->phy_list_mutex);
934
James Bottomleya0e1b6e2006-07-09 12:38:19 -0500935 if (port->is_backlink) {
936 struct device *parent = port->dev.parent;
937
938 sysfs_remove_link(&port->dev.kobj, parent->bus_id);
939 port->is_backlink = 0;
940 }
941
James Bottomley65c92b02006-06-28 12:22:50 -0400942 transport_remove_device(dev);
943 device_del(dev);
944 transport_destroy_device(dev);
945 put_device(dev);
946}
947EXPORT_SYMBOL(sas_port_delete);
948
949/**
Rob Landleyeb448202007-11-03 13:30:39 -0500950 * scsi_is_sas_port - check if a struct device represents a SAS port
James Bottomley65c92b02006-06-28 12:22:50 -0400951 * @dev: device to check
952 *
953 * Returns:
954 * %1 if the device represents a SAS Port, %0 else
955 */
956int scsi_is_sas_port(const struct device *dev)
957{
958 return dev->release == sas_port_release;
959}
960EXPORT_SYMBOL(scsi_is_sas_port);
961
962/**
963 * sas_port_add_phy - add another phy to a port to form a wide port
964 * @port: port to add the phy to
965 * @phy: phy to add
966 *
967 * When a port is initially created, it is empty (has no phys). All
968 * ports must have at least one phy to operated, and all wide ports
969 * must have at least two. The current code makes no difference
970 * between ports and wide ports, but the only object that can be
971 * connected to a remote device is a port, so ports must be formed on
972 * all devices with phys if they're connected to anything.
973 */
974void sas_port_add_phy(struct sas_port *port, struct sas_phy *phy)
975{
976 mutex_lock(&port->phy_list_mutex);
977 if (unlikely(!list_empty(&phy->port_siblings))) {
978 /* make sure we're already on this port */
979 struct sas_phy *tmp;
980
981 list_for_each_entry(tmp, &port->phy_list, port_siblings)
982 if (tmp == phy)
983 break;
984 /* If this trips, you added a phy that was already
985 * part of a different port */
986 if (unlikely(tmp != phy)) {
987 dev_printk(KERN_ERR, &port->dev, "trying to add phy %s fails: it's already part of another port\n", phy->dev.bus_id);
988 BUG();
989 }
990 } else {
991 sas_port_create_link(port, phy);
992 list_add_tail(&phy->port_siblings, &port->phy_list);
993 port->num_phys++;
994 }
995 mutex_unlock(&port->phy_list_mutex);
996}
997EXPORT_SYMBOL(sas_port_add_phy);
998
999/**
1000 * sas_port_delete_phy - remove a phy from a port or wide port
1001 * @port: port to remove the phy from
1002 * @phy: phy to remove
1003 *
1004 * This operation is used for tearing down ports again. It must be
1005 * done to every port or wide port before calling sas_port_delete.
1006 */
1007void sas_port_delete_phy(struct sas_port *port, struct sas_phy *phy)
1008{
1009 mutex_lock(&port->phy_list_mutex);
1010 sas_port_delete_link(port, phy);
1011 list_del_init(&phy->port_siblings);
1012 port->num_phys--;
1013 mutex_unlock(&port->phy_list_mutex);
1014}
1015EXPORT_SYMBOL(sas_port_delete_phy);
1016
James Bottomleya0e1b6e2006-07-09 12:38:19 -05001017void sas_port_mark_backlink(struct sas_port *port)
1018{
Darrick J. Wong21434962007-01-26 14:08:46 -08001019 int res;
James Bottomleya0e1b6e2006-07-09 12:38:19 -05001020 struct device *parent = port->dev.parent->parent->parent;
1021
1022 if (port->is_backlink)
1023 return;
1024 port->is_backlink = 1;
Darrick J. Wong21434962007-01-26 14:08:46 -08001025 res = sysfs_create_link(&port->dev.kobj, &parent->kobj,
1026 parent->bus_id);
1027 if (res)
1028 goto err;
1029 return;
1030err:
1031 printk(KERN_ERR "%s: Cannot create port backlink, err=%d\n",
Harvey Harrisoncadbd4a2008-07-03 23:47:27 -07001032 __func__, res);
James Bottomleya0e1b6e2006-07-09 12:38:19 -05001033
1034}
1035EXPORT_SYMBOL(sas_port_mark_backlink);
1036
James Bottomley65c92b02006-06-28 12:22:50 -04001037/*
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001038 * SAS remote PHY attributes.
1039 */
1040
1041#define sas_rphy_show_simple(field, name, format_string, cast) \
1042static ssize_t \
Tony Jonesee959b02008-02-22 00:13:36 +01001043show_sas_rphy_##name(struct device *dev, \
1044 struct device_attribute *attr, char *buf) \
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001045{ \
Tony Jonesee959b02008-02-22 00:13:36 +01001046 struct sas_rphy *rphy = transport_class_to_rphy(dev); \
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001047 \
1048 return snprintf(buf, 20, format_string, cast rphy->field); \
1049}
1050
1051#define sas_rphy_simple_attr(field, name, format_string, type) \
1052 sas_rphy_show_simple(field, name, format_string, (type)) \
Tony Jonesee959b02008-02-22 00:13:36 +01001053static SAS_DEVICE_ATTR(rphy, name, S_IRUGO, \
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001054 show_sas_rphy_##name, NULL)
1055
1056#define sas_rphy_show_protocol(field, name) \
1057static ssize_t \
Tony Jonesee959b02008-02-22 00:13:36 +01001058show_sas_rphy_##name(struct device *dev, \
1059 struct device_attribute *attr, char *buf) \
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001060{ \
Tony Jonesee959b02008-02-22 00:13:36 +01001061 struct sas_rphy *rphy = transport_class_to_rphy(dev); \
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001062 \
1063 if (!rphy->field) \
1064 return snprintf(buf, 20, "none\n"); \
1065 return get_sas_protocol_names(rphy->field, buf); \
1066}
1067
1068#define sas_rphy_protocol_attr(field, name) \
1069 sas_rphy_show_protocol(field, name) \
Tony Jonesee959b02008-02-22 00:13:36 +01001070static SAS_DEVICE_ATTR(rphy, name, S_IRUGO, \
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001071 show_sas_rphy_##name, NULL)
1072
1073static ssize_t
Tony Jonesee959b02008-02-22 00:13:36 +01001074show_sas_rphy_device_type(struct device *dev,
1075 struct device_attribute *attr, char *buf)
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001076{
Tony Jonesee959b02008-02-22 00:13:36 +01001077 struct sas_rphy *rphy = transport_class_to_rphy(dev);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001078
1079 if (!rphy->identify.device_type)
1080 return snprintf(buf, 20, "none\n");
1081 return get_sas_device_type_names(
1082 rphy->identify.device_type, buf);
1083}
1084
Tony Jonesee959b02008-02-22 00:13:36 +01001085static SAS_DEVICE_ATTR(rphy, device_type, S_IRUGO,
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001086 show_sas_rphy_device_type, NULL);
1087
Christoph Hellwiga0125642006-02-16 13:31:47 +01001088static ssize_t
Tony Jonesee959b02008-02-22 00:13:36 +01001089show_sas_rphy_enclosure_identifier(struct device *dev,
1090 struct device_attribute *attr, char *buf)
Christoph Hellwiga0125642006-02-16 13:31:47 +01001091{
Tony Jonesee959b02008-02-22 00:13:36 +01001092 struct sas_rphy *rphy = transport_class_to_rphy(dev);
Christoph Hellwiga0125642006-02-16 13:31:47 +01001093 struct sas_phy *phy = dev_to_phy(rphy->dev.parent);
1094 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
1095 struct sas_internal *i = to_sas_internal(shost->transportt);
1096 u64 identifier;
1097 int error;
1098
1099 /*
1100 * Only devices behind an expander are supported, because the
1101 * enclosure identifier is a SMP feature.
1102 */
James Bottomleyf4ad7b52006-08-25 13:48:18 -05001103 if (scsi_is_sas_phy_local(phy))
Christoph Hellwiga0125642006-02-16 13:31:47 +01001104 return -EINVAL;
1105
1106 error = i->f->get_enclosure_identifier(rphy, &identifier);
1107 if (error)
1108 return error;
1109 return sprintf(buf, "0x%llx\n", (unsigned long long)identifier);
1110}
1111
Tony Jonesee959b02008-02-22 00:13:36 +01001112static SAS_DEVICE_ATTR(rphy, enclosure_identifier, S_IRUGO,
Christoph Hellwiga0125642006-02-16 13:31:47 +01001113 show_sas_rphy_enclosure_identifier, NULL);
1114
1115static ssize_t
Tony Jonesee959b02008-02-22 00:13:36 +01001116show_sas_rphy_bay_identifier(struct device *dev,
1117 struct device_attribute *attr, char *buf)
Christoph Hellwiga0125642006-02-16 13:31:47 +01001118{
Tony Jonesee959b02008-02-22 00:13:36 +01001119 struct sas_rphy *rphy = transport_class_to_rphy(dev);
Christoph Hellwiga0125642006-02-16 13:31:47 +01001120 struct sas_phy *phy = dev_to_phy(rphy->dev.parent);
1121 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
1122 struct sas_internal *i = to_sas_internal(shost->transportt);
1123 int val;
1124
James Bottomleyf4ad7b52006-08-25 13:48:18 -05001125 if (scsi_is_sas_phy_local(phy))
Christoph Hellwiga0125642006-02-16 13:31:47 +01001126 return -EINVAL;
1127
1128 val = i->f->get_bay_identifier(rphy);
1129 if (val < 0)
1130 return val;
1131 return sprintf(buf, "%d\n", val);
1132}
1133
Tony Jonesee959b02008-02-22 00:13:36 +01001134static SAS_DEVICE_ATTR(rphy, bay_identifier, S_IRUGO,
Christoph Hellwiga0125642006-02-16 13:31:47 +01001135 show_sas_rphy_bay_identifier, NULL);
1136
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001137sas_rphy_protocol_attr(identify.initiator_port_protocols,
1138 initiator_port_protocols);
1139sas_rphy_protocol_attr(identify.target_port_protocols, target_port_protocols);
1140sas_rphy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n",
1141 unsigned long long);
1142sas_rphy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8);
1143
James Bottomley42ab0362006-03-04 09:10:18 -06001144/* only need 8 bytes of data plus header (4 or 8) */
1145#define BUF_SIZE 64
1146
1147int sas_read_port_mode_page(struct scsi_device *sdev)
1148{
1149 char *buffer = kzalloc(BUF_SIZE, GFP_KERNEL), *msdata;
1150 struct sas_rphy *rphy = target_to_rphy(sdev->sdev_target);
1151 struct sas_end_device *rdev;
1152 struct scsi_mode_data mode_data;
1153 int res, error;
1154
1155 BUG_ON(rphy->identify.device_type != SAS_END_DEVICE);
1156
1157 rdev = rphy_to_end_device(rphy);
1158
1159 if (!buffer)
1160 return -ENOMEM;
1161
1162 res = scsi_mode_sense(sdev, 1, 0x19, buffer, BUF_SIZE, 30*HZ, 3,
1163 &mode_data, NULL);
1164
1165 error = -EINVAL;
1166 if (!scsi_status_is_good(res))
1167 goto out;
1168
1169 msdata = buffer + mode_data.header_length +
1170 mode_data.block_descriptor_length;
1171
1172 if (msdata - buffer > BUF_SIZE - 8)
1173 goto out;
1174
1175 error = 0;
1176
1177 rdev->ready_led_meaning = msdata[2] & 0x10 ? 1 : 0;
1178 rdev->I_T_nexus_loss_timeout = (msdata[4] << 8) + msdata[5];
1179 rdev->initiator_response_timeout = (msdata[6] << 8) + msdata[7];
1180
1181 out:
1182 kfree(buffer);
1183 return error;
1184}
1185EXPORT_SYMBOL(sas_read_port_mode_page);
1186
James Bottomley79cb1812006-03-13 13:50:04 -06001187static DECLARE_TRANSPORT_CLASS(sas_end_dev_class,
1188 "sas_end_device", NULL, NULL, NULL);
1189
James Bottomley42ab0362006-03-04 09:10:18 -06001190#define sas_end_dev_show_simple(field, name, format_string, cast) \
1191static ssize_t \
Tony Jonesee959b02008-02-22 00:13:36 +01001192show_sas_end_dev_##name(struct device *dev, \
1193 struct device_attribute *attr, char *buf) \
James Bottomley42ab0362006-03-04 09:10:18 -06001194{ \
Tony Jonesee959b02008-02-22 00:13:36 +01001195 struct sas_rphy *rphy = transport_class_to_rphy(dev); \
James Bottomley42ab0362006-03-04 09:10:18 -06001196 struct sas_end_device *rdev = rphy_to_end_device(rphy); \
1197 \
1198 return snprintf(buf, 20, format_string, cast rdev->field); \
1199}
1200
1201#define sas_end_dev_simple_attr(field, name, format_string, type) \
1202 sas_end_dev_show_simple(field, name, format_string, (type)) \
Tony Jonesee959b02008-02-22 00:13:36 +01001203static SAS_DEVICE_ATTR(end_dev, name, S_IRUGO, \
James Bottomley42ab0362006-03-04 09:10:18 -06001204 show_sas_end_dev_##name, NULL)
1205
1206sas_end_dev_simple_attr(ready_led_meaning, ready_led_meaning, "%d\n", int);
1207sas_end_dev_simple_attr(I_T_nexus_loss_timeout, I_T_nexus_loss_timeout,
1208 "%d\n", int);
1209sas_end_dev_simple_attr(initiator_response_timeout, initiator_response_timeout,
1210 "%d\n", int);
1211
James Bottomley79cb1812006-03-13 13:50:04 -06001212static DECLARE_TRANSPORT_CLASS(sas_expander_class,
1213 "sas_expander", NULL, NULL, NULL);
1214
1215#define sas_expander_show_simple(field, name, format_string, cast) \
1216static ssize_t \
Tony Jonesee959b02008-02-22 00:13:36 +01001217show_sas_expander_##name(struct device *dev, \
1218 struct device_attribute *attr, char *buf) \
James Bottomley79cb1812006-03-13 13:50:04 -06001219{ \
Tony Jonesee959b02008-02-22 00:13:36 +01001220 struct sas_rphy *rphy = transport_class_to_rphy(dev); \
James Bottomley79cb1812006-03-13 13:50:04 -06001221 struct sas_expander_device *edev = rphy_to_expander_device(rphy); \
1222 \
1223 return snprintf(buf, 20, format_string, cast edev->field); \
1224}
1225
1226#define sas_expander_simple_attr(field, name, format_string, type) \
1227 sas_expander_show_simple(field, name, format_string, (type)) \
Tony Jonesee959b02008-02-22 00:13:36 +01001228static SAS_DEVICE_ATTR(expander, name, S_IRUGO, \
James Bottomley79cb1812006-03-13 13:50:04 -06001229 show_sas_expander_##name, NULL)
1230
1231sas_expander_simple_attr(vendor_id, vendor_id, "%s\n", char *);
1232sas_expander_simple_attr(product_id, product_id, "%s\n", char *);
1233sas_expander_simple_attr(product_rev, product_rev, "%s\n", char *);
1234sas_expander_simple_attr(component_vendor_id, component_vendor_id,
1235 "%s\n", char *);
1236sas_expander_simple_attr(component_id, component_id, "%u\n", unsigned int);
1237sas_expander_simple_attr(component_revision_id, component_revision_id, "%u\n",
1238 unsigned int);
1239sas_expander_simple_attr(level, level, "%d\n", int);
James Bottomley42ab0362006-03-04 09:10:18 -06001240
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001241static DECLARE_TRANSPORT_CLASS(sas_rphy_class,
James Bottomley2f8600d2006-03-18 15:00:50 -06001242 "sas_device", NULL, NULL, NULL);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001243
1244static int sas_rphy_match(struct attribute_container *cont, struct device *dev)
1245{
1246 struct Scsi_Host *shost;
1247 struct sas_internal *i;
1248
1249 if (!scsi_is_sas_rphy(dev))
1250 return 0;
1251 shost = dev_to_shost(dev->parent->parent);
1252
1253 if (!shost->transportt)
1254 return 0;
1255 if (shost->transportt->host_attrs.ac.class !=
1256 &sas_host_class.class)
1257 return 0;
1258
1259 i = to_sas_internal(shost->transportt);
1260 return &i->rphy_attr_cont.ac == cont;
1261}
1262
James Bottomley42ab0362006-03-04 09:10:18 -06001263static int sas_end_dev_match(struct attribute_container *cont,
1264 struct device *dev)
1265{
1266 struct Scsi_Host *shost;
1267 struct sas_internal *i;
1268 struct sas_rphy *rphy;
1269
1270 if (!scsi_is_sas_rphy(dev))
1271 return 0;
1272 shost = dev_to_shost(dev->parent->parent);
1273 rphy = dev_to_rphy(dev);
1274
1275 if (!shost->transportt)
1276 return 0;
1277 if (shost->transportt->host_attrs.ac.class !=
1278 &sas_host_class.class)
1279 return 0;
1280
1281 i = to_sas_internal(shost->transportt);
1282 return &i->end_dev_attr_cont.ac == cont &&
James Bottomley2f8600d2006-03-18 15:00:50 -06001283 rphy->identify.device_type == SAS_END_DEVICE;
James Bottomley42ab0362006-03-04 09:10:18 -06001284}
1285
James Bottomley79cb1812006-03-13 13:50:04 -06001286static int sas_expander_match(struct attribute_container *cont,
1287 struct device *dev)
1288{
1289 struct Scsi_Host *shost;
1290 struct sas_internal *i;
1291 struct sas_rphy *rphy;
1292
1293 if (!scsi_is_sas_rphy(dev))
1294 return 0;
1295 shost = dev_to_shost(dev->parent->parent);
1296 rphy = dev_to_rphy(dev);
1297
1298 if (!shost->transportt)
1299 return 0;
1300 if (shost->transportt->host_attrs.ac.class !=
1301 &sas_host_class.class)
1302 return 0;
1303
1304 i = to_sas_internal(shost->transportt);
1305 return &i->expander_attr_cont.ac == cont &&
1306 (rphy->identify.device_type == SAS_EDGE_EXPANDER_DEVICE ||
James Bottomley2f8600d2006-03-18 15:00:50 -06001307 rphy->identify.device_type == SAS_FANOUT_EXPANDER_DEVICE);
James Bottomley79cb1812006-03-13 13:50:04 -06001308}
1309
James Bottomley2f8600d2006-03-18 15:00:50 -06001310static void sas_expander_release(struct device *dev)
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001311{
1312 struct sas_rphy *rphy = dev_to_rphy(dev);
James Bottomley2f8600d2006-03-18 15:00:50 -06001313 struct sas_expander_device *edev = rphy_to_expander_device(rphy);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001314
FUJITA Tomonori93c20a52008-04-19 00:43:15 +09001315 if (rphy->q)
1316 blk_cleanup_queue(rphy->q);
1317
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001318 put_device(dev->parent);
James Bottomley2f8600d2006-03-18 15:00:50 -06001319 kfree(edev);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001320}
1321
James Bottomley2f8600d2006-03-18 15:00:50 -06001322static void sas_end_device_release(struct device *dev)
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001323{
James Bottomley2f8600d2006-03-18 15:00:50 -06001324 struct sas_rphy *rphy = dev_to_rphy(dev);
1325 struct sas_end_device *edev = rphy_to_end_device(rphy);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001326
FUJITA Tomonori93c20a52008-04-19 00:43:15 +09001327 if (rphy->q)
1328 blk_cleanup_queue(rphy->q);
1329
James Bottomley2f8600d2006-03-18 15:00:50 -06001330 put_device(dev->parent);
1331 kfree(edev);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001332}
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001333
1334/**
James Bottomleyc5943d32006-06-12 09:09:18 -05001335 * sas_rphy_initialize - common rphy intialization
1336 * @rphy: rphy to initialise
1337 *
1338 * Used by both sas_end_device_alloc() and sas_expander_alloc() to
1339 * initialise the common rphy component of each.
1340 */
1341static void sas_rphy_initialize(struct sas_rphy *rphy)
1342{
1343 INIT_LIST_HEAD(&rphy->list);
1344}
1345
1346/**
James Bottomley42ab0362006-03-04 09:10:18 -06001347 * sas_end_device_alloc - allocate an rphy for an end device
Rob Landleyeb448202007-11-03 13:30:39 -05001348 * @parent: which port
James Bottomley42ab0362006-03-04 09:10:18 -06001349 *
1350 * Allocates an SAS remote PHY structure, connected to @parent.
1351 *
1352 * Returns:
1353 * SAS PHY allocated or %NULL if the allocation failed.
1354 */
James Bottomley65c92b02006-06-28 12:22:50 -04001355struct sas_rphy *sas_end_device_alloc(struct sas_port *parent)
James Bottomley42ab0362006-03-04 09:10:18 -06001356{
1357 struct Scsi_Host *shost = dev_to_shost(&parent->dev);
1358 struct sas_end_device *rdev;
1359
1360 rdev = kzalloc(sizeof(*rdev), GFP_KERNEL);
1361 if (!rdev) {
James Bottomley42ab0362006-03-04 09:10:18 -06001362 return NULL;
1363 }
1364
1365 device_initialize(&rdev->rphy.dev);
1366 rdev->rphy.dev.parent = get_device(&parent->dev);
James Bottomley2f8600d2006-03-18 15:00:50 -06001367 rdev->rphy.dev.release = sas_end_device_release;
James Bottomley65c92b02006-06-28 12:22:50 -04001368 if (scsi_is_sas_expander_device(parent->dev.parent)) {
1369 struct sas_rphy *rphy = dev_to_rphy(parent->dev.parent);
1370 sprintf(rdev->rphy.dev.bus_id, "end_device-%d:%d:%d",
1371 shost->host_no, rphy->scsi_target_id, parent->port_identifier);
1372 } else
1373 sprintf(rdev->rphy.dev.bus_id, "end_device-%d:%d",
1374 shost->host_no, parent->port_identifier);
James Bottomley42ab0362006-03-04 09:10:18 -06001375 rdev->rphy.identify.device_type = SAS_END_DEVICE;
James Bottomleyc5943d32006-06-12 09:09:18 -05001376 sas_rphy_initialize(&rdev->rphy);
James Bottomley42ab0362006-03-04 09:10:18 -06001377 transport_setup_device(&rdev->rphy.dev);
1378
1379 return &rdev->rphy;
1380}
1381EXPORT_SYMBOL(sas_end_device_alloc);
1382
James Bottomley79cb1812006-03-13 13:50:04 -06001383/**
1384 * sas_expander_alloc - allocate an rphy for an end device
Rob Landleyeb448202007-11-03 13:30:39 -05001385 * @parent: which port
1386 * @type: SAS_EDGE_EXPANDER_DEVICE or SAS_FANOUT_EXPANDER_DEVICE
James Bottomley79cb1812006-03-13 13:50:04 -06001387 *
1388 * Allocates an SAS remote PHY structure, connected to @parent.
1389 *
1390 * Returns:
1391 * SAS PHY allocated or %NULL if the allocation failed.
1392 */
James Bottomley65c92b02006-06-28 12:22:50 -04001393struct sas_rphy *sas_expander_alloc(struct sas_port *parent,
James Bottomley79cb1812006-03-13 13:50:04 -06001394 enum sas_device_type type)
1395{
1396 struct Scsi_Host *shost = dev_to_shost(&parent->dev);
1397 struct sas_expander_device *rdev;
1398 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
1399
1400 BUG_ON(type != SAS_EDGE_EXPANDER_DEVICE &&
1401 type != SAS_FANOUT_EXPANDER_DEVICE);
1402
1403 rdev = kzalloc(sizeof(*rdev), GFP_KERNEL);
1404 if (!rdev) {
James Bottomley79cb1812006-03-13 13:50:04 -06001405 return NULL;
1406 }
1407
1408 device_initialize(&rdev->rphy.dev);
1409 rdev->rphy.dev.parent = get_device(&parent->dev);
James Bottomley2f8600d2006-03-18 15:00:50 -06001410 rdev->rphy.dev.release = sas_expander_release;
James Bottomley79cb1812006-03-13 13:50:04 -06001411 mutex_lock(&sas_host->lock);
1412 rdev->rphy.scsi_target_id = sas_host->next_expander_id++;
1413 mutex_unlock(&sas_host->lock);
1414 sprintf(rdev->rphy.dev.bus_id, "expander-%d:%d",
1415 shost->host_no, rdev->rphy.scsi_target_id);
1416 rdev->rphy.identify.device_type = type;
James Bottomleyc5943d32006-06-12 09:09:18 -05001417 sas_rphy_initialize(&rdev->rphy);
James Bottomley79cb1812006-03-13 13:50:04 -06001418 transport_setup_device(&rdev->rphy.dev);
1419
1420 return &rdev->rphy;
1421}
1422EXPORT_SYMBOL(sas_expander_alloc);
James Bottomley42ab0362006-03-04 09:10:18 -06001423
1424/**
Rob Landleyeb448202007-11-03 13:30:39 -05001425 * sas_rphy_add - add a SAS remote PHY to the device hierarchy
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001426 * @rphy: The remote PHY to be added
1427 *
1428 * Publishes a SAS remote PHY to the rest of the system.
1429 */
1430int sas_rphy_add(struct sas_rphy *rphy)
1431{
James Bottomley65c92b02006-06-28 12:22:50 -04001432 struct sas_port *parent = dev_to_sas_port(rphy->dev.parent);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001433 struct Scsi_Host *shost = dev_to_shost(parent->dev.parent);
1434 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
1435 struct sas_identify *identify = &rphy->identify;
1436 int error;
1437
1438 if (parent->rphy)
1439 return -ENXIO;
1440 parent->rphy = rphy;
1441
1442 error = device_add(&rphy->dev);
1443 if (error)
1444 return error;
1445 transport_add_device(&rphy->dev);
1446 transport_configure_device(&rphy->dev);
James Bottomley39dca552007-07-20 18:22:17 -05001447 if (sas_bsg_initialize(shost, rphy))
1448 printk("fail to a bsg device %s\n", rphy->dev.bus_id);
1449
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001450
Christoph Hellwige02f3f52006-01-13 19:04:00 +01001451 mutex_lock(&sas_host->lock);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001452 list_add_tail(&rphy->list, &sas_host->rphy_list);
1453 if (identify->device_type == SAS_END_DEVICE &&
1454 (identify->target_port_protocols &
1455 (SAS_PROTOCOL_SSP|SAS_PROTOCOL_STP|SAS_PROTOCOL_SATA)))
1456 rphy->scsi_target_id = sas_host->next_target_id++;
James Bottomley7676f832006-04-14 09:47:59 -05001457 else if (identify->device_type == SAS_END_DEVICE)
1458 rphy->scsi_target_id = -1;
Christoph Hellwige02f3f52006-01-13 19:04:00 +01001459 mutex_unlock(&sas_host->lock);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001460
James Bottomley79cb1812006-03-13 13:50:04 -06001461 if (identify->device_type == SAS_END_DEVICE &&
1462 rphy->scsi_target_id != -1) {
James Bottomleye8bf3942006-07-11 17:49:34 -04001463 scsi_scan_target(&rphy->dev, 0,
Darrick J. Wongc8490f32007-01-11 14:15:09 -08001464 rphy->scsi_target_id, SCAN_WILD_CARD, 0);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001465 }
1466
1467 return 0;
1468}
1469EXPORT_SYMBOL(sas_rphy_add);
1470
1471/**
Rob Landleyeb448202007-11-03 13:30:39 -05001472 * sas_rphy_free - free a SAS remote PHY
1473 * @rphy: SAS remote PHY to free
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001474 *
1475 * Frees the specified SAS remote PHY.
1476 *
1477 * Note:
1478 * This function must only be called on a remote
1479 * PHY that has not sucessfully been added using
Darrick J. Wong6f63caa2007-01-26 14:08:43 -08001480 * sas_rphy_add() (or has been sas_rphy_remove()'d)
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001481 */
1482void sas_rphy_free(struct sas_rphy *rphy)
1483{
Mike Anderson92aab642006-03-27 09:37:28 -08001484 struct device *dev = &rphy->dev;
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001485 struct Scsi_Host *shost = dev_to_shost(rphy->dev.parent->parent);
1486 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
1487
Christoph Hellwige02f3f52006-01-13 19:04:00 +01001488 mutex_lock(&sas_host->lock);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001489 list_del(&rphy->list);
Christoph Hellwige02f3f52006-01-13 19:04:00 +01001490 mutex_unlock(&sas_host->lock);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001491
James Bottomleyb6aff662007-07-20 11:10:05 -05001492 sas_bsg_remove(shost, rphy);
1493
Mike Anderson92aab642006-03-27 09:37:28 -08001494 transport_destroy_device(dev);
James Bottomley2f8600d2006-03-18 15:00:50 -06001495
Mike Anderson92aab642006-03-27 09:37:28 -08001496 put_device(dev);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001497}
1498EXPORT_SYMBOL(sas_rphy_free);
1499
1500/**
Rob Landleyeb448202007-11-03 13:30:39 -05001501 * sas_rphy_delete - remove and free SAS remote PHY
Darrick J. Wong6f63caa2007-01-26 14:08:43 -08001502 * @rphy: SAS remote PHY to remove and free
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001503 *
Darrick J. Wong6f63caa2007-01-26 14:08:43 -08001504 * Removes the specified SAS remote PHY and frees it.
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001505 */
1506void
1507sas_rphy_delete(struct sas_rphy *rphy)
1508{
Darrick J. Wong6f63caa2007-01-26 14:08:43 -08001509 sas_rphy_remove(rphy);
1510 sas_rphy_free(rphy);
1511}
1512EXPORT_SYMBOL(sas_rphy_delete);
1513
1514/**
Rob Landleyeb448202007-11-03 13:30:39 -05001515 * sas_rphy_remove - remove SAS remote PHY
Darrick J. Wong6f63caa2007-01-26 14:08:43 -08001516 * @rphy: SAS remote phy to remove
1517 *
1518 * Removes the specified SAS remote PHY.
1519 */
1520void
1521sas_rphy_remove(struct sas_rphy *rphy)
1522{
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001523 struct device *dev = &rphy->dev;
James Bottomley65c92b02006-06-28 12:22:50 -04001524 struct sas_port *parent = dev_to_sas_port(dev->parent);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001525
Christoph Hellwigd4054232006-01-04 13:45:20 +01001526 switch (rphy->identify.device_type) {
1527 case SAS_END_DEVICE:
1528 scsi_remove_target(dev);
1529 break;
1530 case SAS_EDGE_EXPANDER_DEVICE:
1531 case SAS_FANOUT_EXPANDER_DEVICE:
James Bottomley65c92b02006-06-28 12:22:50 -04001532 sas_remove_children(dev);
Christoph Hellwigd4054232006-01-04 13:45:20 +01001533 break;
1534 default:
1535 break;
1536 }
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001537
Christoph Hellwigfe8b2302005-09-25 23:10:33 +02001538 transport_remove_device(dev);
1539 device_del(dev);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001540
Christoph Hellwig33b114e2006-01-11 14:20:43 +01001541 parent->rphy = NULL;
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001542}
Darrick J. Wong6f63caa2007-01-26 14:08:43 -08001543EXPORT_SYMBOL(sas_rphy_remove);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001544
1545/**
Rob Landleyeb448202007-11-03 13:30:39 -05001546 * scsi_is_sas_rphy - check if a struct device represents a SAS remote PHY
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001547 * @dev: device to check
1548 *
1549 * Returns:
1550 * %1 if the device represents a SAS remote PHY, %0 else
1551 */
1552int scsi_is_sas_rphy(const struct device *dev)
1553{
James Bottomley2f8600d2006-03-18 15:00:50 -06001554 return dev->release == sas_end_device_release ||
1555 dev->release == sas_expander_release;
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001556}
1557EXPORT_SYMBOL(scsi_is_sas_rphy);
1558
1559
1560/*
1561 * SCSI scan helper
1562 */
1563
Christoph Hellwige02f3f52006-01-13 19:04:00 +01001564static int sas_user_scan(struct Scsi_Host *shost, uint channel,
1565 uint id, uint lun)
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001566{
1567 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
1568 struct sas_rphy *rphy;
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001569
Christoph Hellwige02f3f52006-01-13 19:04:00 +01001570 mutex_lock(&sas_host->lock);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001571 list_for_each_entry(rphy, &sas_host->rphy_list, list) {
James Bottomley6d99a3f2006-05-19 10:49:37 -05001572 if (rphy->identify.device_type != SAS_END_DEVICE ||
1573 rphy->scsi_target_id == -1)
Christoph Hellwige02f3f52006-01-13 19:04:00 +01001574 continue;
1575
James Bottomleye8bf3942006-07-11 17:49:34 -04001576 if ((channel == SCAN_WILD_CARD || channel == 0) &&
Christoph Hellwige02f3f52006-01-13 19:04:00 +01001577 (id == SCAN_WILD_CARD || id == rphy->scsi_target_id)) {
James Bottomleye8bf3942006-07-11 17:49:34 -04001578 scsi_scan_target(&rphy->dev, 0,
Christoph Hellwige02f3f52006-01-13 19:04:00 +01001579 rphy->scsi_target_id, lun, 1);
1580 }
1581 }
1582 mutex_unlock(&sas_host->lock);
1583
1584 return 0;
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001585}
1586
1587
1588/*
1589 * Setup / Teardown code
1590 */
1591
James Bottomleyd24e1ee2006-09-06 19:25:22 -05001592#define SETUP_TEMPLATE(attrb, field, perm, test) \
Tony Jonesee959b02008-02-22 00:13:36 +01001593 i->private_##attrb[count] = dev_attr_##field; \
James Bottomley42ab0362006-03-04 09:10:18 -06001594 i->private_##attrb[count].attr.mode = perm; \
James Bottomley42ab0362006-03-04 09:10:18 -06001595 i->attrb[count] = &i->private_##attrb[count]; \
1596 if (test) \
1597 count++
1598
James Bottomleyd24e1ee2006-09-06 19:25:22 -05001599#define SETUP_TEMPLATE_RW(attrb, field, perm, test, ro_test, ro_perm) \
Tony Jonesee959b02008-02-22 00:13:36 +01001600 i->private_##attrb[count] = dev_attr_##field; \
James Bottomleyd24e1ee2006-09-06 19:25:22 -05001601 i->private_##attrb[count].attr.mode = perm; \
1602 if (ro_test) { \
1603 i->private_##attrb[count].attr.mode = ro_perm; \
1604 i->private_##attrb[count].store = NULL; \
1605 } \
1606 i->attrb[count] = &i->private_##attrb[count]; \
1607 if (test) \
1608 count++
James Bottomley42ab0362006-03-04 09:10:18 -06001609
1610#define SETUP_RPORT_ATTRIBUTE(field) \
1611 SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, 1)
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001612
James Bottomleydd9fbb522006-03-02 16:01:31 -06001613#define SETUP_OPTIONAL_RPORT_ATTRIBUTE(field, func) \
James Bottomley42ab0362006-03-04 09:10:18 -06001614 SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, i->f->func)
James Bottomleydd9fbb522006-03-02 16:01:31 -06001615
James Bottomley65c92b02006-06-28 12:22:50 -04001616#define SETUP_PHY_ATTRIBUTE(field) \
James Bottomley42ab0362006-03-04 09:10:18 -06001617 SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, 1)
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001618
James Bottomleyd24e1ee2006-09-06 19:25:22 -05001619#define SETUP_PHY_ATTRIBUTE_RW(field) \
1620 SETUP_TEMPLATE_RW(phy_attrs, field, S_IRUGO | S_IWUSR, 1, \
1621 !i->f->set_phy_speed, S_IRUGO)
1622
Darrick J. Wongacbf1672007-01-11 14:14:57 -08001623#define SETUP_OPTIONAL_PHY_ATTRIBUTE_RW(field, func) \
1624 SETUP_TEMPLATE_RW(phy_attrs, field, S_IRUGO | S_IWUSR, 1, \
1625 !i->f->func, S_IRUGO)
1626
James Bottomley65c92b02006-06-28 12:22:50 -04001627#define SETUP_PORT_ATTRIBUTE(field) \
1628 SETUP_TEMPLATE(port_attrs, field, S_IRUGO, 1)
1629
1630#define SETUP_OPTIONAL_PHY_ATTRIBUTE(field, func) \
James Bottomley42ab0362006-03-04 09:10:18 -06001631 SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, i->f->func)
James Bottomleydd9fbb522006-03-02 16:01:31 -06001632
James Bottomley65c92b02006-06-28 12:22:50 -04001633#define SETUP_PHY_ATTRIBUTE_WRONLY(field) \
Darrick J. Wongfe3b5bf2007-01-11 14:15:35 -08001634 SETUP_TEMPLATE(phy_attrs, field, S_IWUSR, 1)
Christoph Hellwig07ba3a92005-10-19 20:01:31 +02001635
James Bottomley65c92b02006-06-28 12:22:50 -04001636#define SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(field, func) \
Darrick J. Wongfe3b5bf2007-01-11 14:15:35 -08001637 SETUP_TEMPLATE(phy_attrs, field, S_IWUSR, i->f->func)
James Bottomleydd9fbb522006-03-02 16:01:31 -06001638
James Bottomley42ab0362006-03-04 09:10:18 -06001639#define SETUP_END_DEV_ATTRIBUTE(field) \
1640 SETUP_TEMPLATE(end_dev_attrs, field, S_IRUGO, 1)
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001641
James Bottomley79cb1812006-03-13 13:50:04 -06001642#define SETUP_EXPANDER_ATTRIBUTE(field) \
1643 SETUP_TEMPLATE(expander_attrs, expander_##field, S_IRUGO, 1)
1644
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001645/**
Rob Landleyeb448202007-11-03 13:30:39 -05001646 * sas_attach_transport - instantiate SAS transport template
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001647 * @ft: SAS transport class function template
1648 */
1649struct scsi_transport_template *
1650sas_attach_transport(struct sas_function_template *ft)
1651{
1652 struct sas_internal *i;
1653 int count;
1654
Jes Sorensen24669f752006-01-16 10:31:18 -05001655 i = kzalloc(sizeof(struct sas_internal), GFP_KERNEL);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001656 if (!i)
1657 return NULL;
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001658
Christoph Hellwige02f3f52006-01-13 19:04:00 +01001659 i->t.user_scan = sas_user_scan;
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001660
1661 i->t.host_attrs.ac.attrs = &i->host_attrs[0];
1662 i->t.host_attrs.ac.class = &sas_host_class.class;
1663 i->t.host_attrs.ac.match = sas_host_match;
1664 transport_container_register(&i->t.host_attrs);
1665 i->t.host_size = sizeof(struct sas_host_attrs);
1666
1667 i->phy_attr_cont.ac.class = &sas_phy_class.class;
1668 i->phy_attr_cont.ac.attrs = &i->phy_attrs[0];
1669 i->phy_attr_cont.ac.match = sas_phy_match;
1670 transport_container_register(&i->phy_attr_cont);
1671
James Bottomley65c92b02006-06-28 12:22:50 -04001672 i->port_attr_cont.ac.class = &sas_port_class.class;
1673 i->port_attr_cont.ac.attrs = &i->port_attrs[0];
1674 i->port_attr_cont.ac.match = sas_port_match;
1675 transport_container_register(&i->port_attr_cont);
1676
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001677 i->rphy_attr_cont.ac.class = &sas_rphy_class.class;
1678 i->rphy_attr_cont.ac.attrs = &i->rphy_attrs[0];
1679 i->rphy_attr_cont.ac.match = sas_rphy_match;
1680 transport_container_register(&i->rphy_attr_cont);
1681
James Bottomley42ab0362006-03-04 09:10:18 -06001682 i->end_dev_attr_cont.ac.class = &sas_end_dev_class.class;
1683 i->end_dev_attr_cont.ac.attrs = &i->end_dev_attrs[0];
1684 i->end_dev_attr_cont.ac.match = sas_end_dev_match;
1685 transport_container_register(&i->end_dev_attr_cont);
1686
James Bottomley79cb1812006-03-13 13:50:04 -06001687 i->expander_attr_cont.ac.class = &sas_expander_class.class;
1688 i->expander_attr_cont.ac.attrs = &i->expander_attrs[0];
1689 i->expander_attr_cont.ac.match = sas_expander_match;
1690 transport_container_register(&i->expander_attr_cont);
1691
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001692 i->f = ft;
1693
1694 count = 0;
James Bottomley65c92b02006-06-28 12:22:50 -04001695 SETUP_PORT_ATTRIBUTE(num_phys);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001696 i->host_attrs[count] = NULL;
1697
1698 count = 0;
James Bottomley65c92b02006-06-28 12:22:50 -04001699 SETUP_PHY_ATTRIBUTE(initiator_port_protocols);
1700 SETUP_PHY_ATTRIBUTE(target_port_protocols);
1701 SETUP_PHY_ATTRIBUTE(device_type);
1702 SETUP_PHY_ATTRIBUTE(sas_address);
1703 SETUP_PHY_ATTRIBUTE(phy_identifier);
1704 //SETUP_PHY_ATTRIBUTE(port_identifier);
1705 SETUP_PHY_ATTRIBUTE(negotiated_linkrate);
1706 SETUP_PHY_ATTRIBUTE(minimum_linkrate_hw);
James Bottomleyd24e1ee2006-09-06 19:25:22 -05001707 SETUP_PHY_ATTRIBUTE_RW(minimum_linkrate);
James Bottomley65c92b02006-06-28 12:22:50 -04001708 SETUP_PHY_ATTRIBUTE(maximum_linkrate_hw);
James Bottomleyd24e1ee2006-09-06 19:25:22 -05001709 SETUP_PHY_ATTRIBUTE_RW(maximum_linkrate);
Christoph Hellwigc3ee74c2005-09-19 21:59:42 +02001710
James Bottomley65c92b02006-06-28 12:22:50 -04001711 SETUP_PHY_ATTRIBUTE(invalid_dword_count);
1712 SETUP_PHY_ATTRIBUTE(running_disparity_error_count);
1713 SETUP_PHY_ATTRIBUTE(loss_of_dword_sync_count);
1714 SETUP_PHY_ATTRIBUTE(phy_reset_problem_count);
1715 SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(link_reset, phy_reset);
1716 SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(hard_reset, phy_reset);
Darrick J. Wongacbf1672007-01-11 14:14:57 -08001717 SETUP_OPTIONAL_PHY_ATTRIBUTE_RW(enable, phy_enable);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001718 i->phy_attrs[count] = NULL;
1719
1720 count = 0;
James Bottomley65c92b02006-06-28 12:22:50 -04001721 SETUP_PORT_ATTRIBUTE(num_phys);
1722 i->port_attrs[count] = NULL;
1723
1724 count = 0;
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001725 SETUP_RPORT_ATTRIBUTE(rphy_initiator_port_protocols);
1726 SETUP_RPORT_ATTRIBUTE(rphy_target_port_protocols);
1727 SETUP_RPORT_ATTRIBUTE(rphy_device_type);
1728 SETUP_RPORT_ATTRIBUTE(rphy_sas_address);
1729 SETUP_RPORT_ATTRIBUTE(rphy_phy_identifier);
James Bottomleydd9fbb522006-03-02 16:01:31 -06001730 SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_enclosure_identifier,
1731 get_enclosure_identifier);
1732 SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_bay_identifier,
1733 get_bay_identifier);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001734 i->rphy_attrs[count] = NULL;
1735
James Bottomley42ab0362006-03-04 09:10:18 -06001736 count = 0;
1737 SETUP_END_DEV_ATTRIBUTE(end_dev_ready_led_meaning);
1738 SETUP_END_DEV_ATTRIBUTE(end_dev_I_T_nexus_loss_timeout);
1739 SETUP_END_DEV_ATTRIBUTE(end_dev_initiator_response_timeout);
1740 i->end_dev_attrs[count] = NULL;
1741
James Bottomley79cb1812006-03-13 13:50:04 -06001742 count = 0;
1743 SETUP_EXPANDER_ATTRIBUTE(vendor_id);
1744 SETUP_EXPANDER_ATTRIBUTE(product_id);
1745 SETUP_EXPANDER_ATTRIBUTE(product_rev);
1746 SETUP_EXPANDER_ATTRIBUTE(component_vendor_id);
1747 SETUP_EXPANDER_ATTRIBUTE(component_id);
1748 SETUP_EXPANDER_ATTRIBUTE(component_revision_id);
1749 SETUP_EXPANDER_ATTRIBUTE(level);
1750 i->expander_attrs[count] = NULL;
1751
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001752 return &i->t;
1753}
1754EXPORT_SYMBOL(sas_attach_transport);
1755
1756/**
Rob Landleyeb448202007-11-03 13:30:39 -05001757 * sas_release_transport - release SAS transport template instance
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001758 * @t: transport template instance
1759 */
1760void sas_release_transport(struct scsi_transport_template *t)
1761{
1762 struct sas_internal *i = to_sas_internal(t);
1763
1764 transport_container_unregister(&i->t.host_attrs);
1765 transport_container_unregister(&i->phy_attr_cont);
James Bottomley65c92b02006-06-28 12:22:50 -04001766 transport_container_unregister(&i->port_attr_cont);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001767 transport_container_unregister(&i->rphy_attr_cont);
James Bottomleydb82f842006-03-09 22:06:36 -05001768 transport_container_unregister(&i->end_dev_attr_cont);
James Bottomley79cb1812006-03-13 13:50:04 -06001769 transport_container_unregister(&i->expander_attr_cont);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001770
1771 kfree(i);
1772}
1773EXPORT_SYMBOL(sas_release_transport);
1774
1775static __init int sas_transport_init(void)
1776{
1777 int error;
1778
1779 error = transport_class_register(&sas_host_class);
1780 if (error)
1781 goto out;
1782 error = transport_class_register(&sas_phy_class);
1783 if (error)
1784 goto out_unregister_transport;
James Bottomley65c92b02006-06-28 12:22:50 -04001785 error = transport_class_register(&sas_port_class);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001786 if (error)
1787 goto out_unregister_phy;
James Bottomley65c92b02006-06-28 12:22:50 -04001788 error = transport_class_register(&sas_rphy_class);
1789 if (error)
1790 goto out_unregister_port;
James Bottomley42ab0362006-03-04 09:10:18 -06001791 error = transport_class_register(&sas_end_dev_class);
1792 if (error)
1793 goto out_unregister_rphy;
James Bottomley79cb1812006-03-13 13:50:04 -06001794 error = transport_class_register(&sas_expander_class);
1795 if (error)
1796 goto out_unregister_end_dev;
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001797
1798 return 0;
1799
James Bottomley79cb1812006-03-13 13:50:04 -06001800 out_unregister_end_dev:
1801 transport_class_unregister(&sas_end_dev_class);
James Bottomley42ab0362006-03-04 09:10:18 -06001802 out_unregister_rphy:
1803 transport_class_unregister(&sas_rphy_class);
James Bottomley65c92b02006-06-28 12:22:50 -04001804 out_unregister_port:
1805 transport_class_unregister(&sas_port_class);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001806 out_unregister_phy:
1807 transport_class_unregister(&sas_phy_class);
1808 out_unregister_transport:
1809 transport_class_unregister(&sas_host_class);
1810 out:
1811 return error;
1812
1813}
1814
1815static void __exit sas_transport_exit(void)
1816{
1817 transport_class_unregister(&sas_host_class);
1818 transport_class_unregister(&sas_phy_class);
James Bottomley65c92b02006-06-28 12:22:50 -04001819 transport_class_unregister(&sas_port_class);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001820 transport_class_unregister(&sas_rphy_class);
James Bottomley42ab0362006-03-04 09:10:18 -06001821 transport_class_unregister(&sas_end_dev_class);
James Bottomley79cb1812006-03-13 13:50:04 -06001822 transport_class_unregister(&sas_expander_class);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001823}
1824
1825MODULE_AUTHOR("Christoph Hellwig");
Alexis Bruemmer86b9c4c2007-01-16 15:36:12 -08001826MODULE_DESCRIPTION("SAS Transport Attributes");
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001827MODULE_LICENSE("GPL");
1828
1829module_init(sas_transport_init);
1830module_exit(sas_transport_exit);