blob: 50988cbf7b2df90a1cc23d07e423c920b428e2ba [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;
Kay Sievers71610f52008-12-03 22:41:36 +0100210 char namebuf[20];
James Bottomley39dca552007-07-20 18:22:17 -0500211 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;
Kay Sievers71610f52008-12-03 22:41:36 +0100222 name = dev_name(dev);
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);
Kay Sievers71610f52008-12-03 22:41:36 +0100632 dev_set_name(&phy->dev, "phy-%d:%d:%d", shost->host_no,
James Bottomley79cb1812006-03-13 13:50:04 -0600633 rphy->scsi_target_id, number);
634 } else
Kay Sievers71610f52008-12-03 22:41:36 +0100635 dev_set_name(&phy->dev, "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,
Kay Sievers71610f52008-12-03 22:41:36 +0100773 dev_name(&phy->dev));
Darrick J. Wong21434962007-01-26 14:08:46 -0800774 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{
Kay Sievers71610f52008-12-03 22:41:36 +0100788 sysfs_remove_link(&port->dev.kobj, dev_name(&phy->dev));
James Bottomley65c92b02006-06-28 12:22:50 -0400789 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);
Kay Sievers71610f52008-12-03 22:41:36 +0100824 dev_set_name(&port->dev, "port-%d:%d:%d", shost->host_no,
825 rphy->scsi_target_id, port->port_identifier);
James Bottomley65c92b02006-06-28 12:22:50 -0400826 } else
Kay Sievers71610f52008-12-03 22:41:36 +0100827 dev_set_name(&port->dev, "port-%d:%d", shost->host_no,
828 port->port_identifier);
James Bottomley65c92b02006-06-28 12:22:50 -0400829
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
Kay Sievers71610f52008-12-03 22:41:36 +0100938 sysfs_remove_link(&port->dev.kobj, dev_name(parent));
James Bottomleya0e1b6e2006-07-09 12:38:19 -0500939 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)) {
Kay Sievers71610f52008-12-03 22:41:36 +0100987 dev_printk(KERN_ERR, &port->dev, "trying to add phy %s fails: it's already part of another port\n",
988 dev_name(&phy->dev));
James Bottomley65c92b02006-06-28 12:22:50 -0400989 BUG();
990 }
991 } else {
992 sas_port_create_link(port, phy);
993 list_add_tail(&phy->port_siblings, &port->phy_list);
994 port->num_phys++;
995 }
996 mutex_unlock(&port->phy_list_mutex);
997}
998EXPORT_SYMBOL(sas_port_add_phy);
999
1000/**
1001 * sas_port_delete_phy - remove a phy from a port or wide port
1002 * @port: port to remove the phy from
1003 * @phy: phy to remove
1004 *
1005 * This operation is used for tearing down ports again. It must be
1006 * done to every port or wide port before calling sas_port_delete.
1007 */
1008void sas_port_delete_phy(struct sas_port *port, struct sas_phy *phy)
1009{
1010 mutex_lock(&port->phy_list_mutex);
1011 sas_port_delete_link(port, phy);
1012 list_del_init(&phy->port_siblings);
1013 port->num_phys--;
1014 mutex_unlock(&port->phy_list_mutex);
1015}
1016EXPORT_SYMBOL(sas_port_delete_phy);
1017
James Bottomleya0e1b6e2006-07-09 12:38:19 -05001018void sas_port_mark_backlink(struct sas_port *port)
1019{
Darrick J. Wong21434962007-01-26 14:08:46 -08001020 int res;
James Bottomleya0e1b6e2006-07-09 12:38:19 -05001021 struct device *parent = port->dev.parent->parent->parent;
1022
1023 if (port->is_backlink)
1024 return;
1025 port->is_backlink = 1;
Darrick J. Wong21434962007-01-26 14:08:46 -08001026 res = sysfs_create_link(&port->dev.kobj, &parent->kobj,
Kay Sievers71610f52008-12-03 22:41:36 +01001027 dev_name(parent));
Darrick J. Wong21434962007-01-26 14:08:46 -08001028 if (res)
1029 goto err;
1030 return;
1031err:
1032 printk(KERN_ERR "%s: Cannot create port backlink, err=%d\n",
Harvey Harrisoncadbd4a2008-07-03 23:47:27 -07001033 __func__, res);
James Bottomleya0e1b6e2006-07-09 12:38:19 -05001034
1035}
1036EXPORT_SYMBOL(sas_port_mark_backlink);
1037
James Bottomley65c92b02006-06-28 12:22:50 -04001038/*
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001039 * SAS remote PHY attributes.
1040 */
1041
1042#define sas_rphy_show_simple(field, name, format_string, cast) \
1043static ssize_t \
Tony Jonesee959b02008-02-22 00:13:36 +01001044show_sas_rphy_##name(struct device *dev, \
1045 struct device_attribute *attr, char *buf) \
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001046{ \
Tony Jonesee959b02008-02-22 00:13:36 +01001047 struct sas_rphy *rphy = transport_class_to_rphy(dev); \
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001048 \
1049 return snprintf(buf, 20, format_string, cast rphy->field); \
1050}
1051
1052#define sas_rphy_simple_attr(field, name, format_string, type) \
1053 sas_rphy_show_simple(field, name, format_string, (type)) \
Tony Jonesee959b02008-02-22 00:13:36 +01001054static SAS_DEVICE_ATTR(rphy, name, S_IRUGO, \
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001055 show_sas_rphy_##name, NULL)
1056
1057#define sas_rphy_show_protocol(field, name) \
1058static ssize_t \
Tony Jonesee959b02008-02-22 00:13:36 +01001059show_sas_rphy_##name(struct device *dev, \
1060 struct device_attribute *attr, char *buf) \
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001061{ \
Tony Jonesee959b02008-02-22 00:13:36 +01001062 struct sas_rphy *rphy = transport_class_to_rphy(dev); \
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001063 \
1064 if (!rphy->field) \
1065 return snprintf(buf, 20, "none\n"); \
1066 return get_sas_protocol_names(rphy->field, buf); \
1067}
1068
1069#define sas_rphy_protocol_attr(field, name) \
1070 sas_rphy_show_protocol(field, name) \
Tony Jonesee959b02008-02-22 00:13:36 +01001071static SAS_DEVICE_ATTR(rphy, name, S_IRUGO, \
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001072 show_sas_rphy_##name, NULL)
1073
1074static ssize_t
Tony Jonesee959b02008-02-22 00:13:36 +01001075show_sas_rphy_device_type(struct device *dev,
1076 struct device_attribute *attr, char *buf)
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001077{
Tony Jonesee959b02008-02-22 00:13:36 +01001078 struct sas_rphy *rphy = transport_class_to_rphy(dev);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001079
1080 if (!rphy->identify.device_type)
1081 return snprintf(buf, 20, "none\n");
1082 return get_sas_device_type_names(
1083 rphy->identify.device_type, buf);
1084}
1085
Tony Jonesee959b02008-02-22 00:13:36 +01001086static SAS_DEVICE_ATTR(rphy, device_type, S_IRUGO,
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001087 show_sas_rphy_device_type, NULL);
1088
Christoph Hellwiga0125642006-02-16 13:31:47 +01001089static ssize_t
Tony Jonesee959b02008-02-22 00:13:36 +01001090show_sas_rphy_enclosure_identifier(struct device *dev,
1091 struct device_attribute *attr, char *buf)
Christoph Hellwiga0125642006-02-16 13:31:47 +01001092{
Tony Jonesee959b02008-02-22 00:13:36 +01001093 struct sas_rphy *rphy = transport_class_to_rphy(dev);
Christoph Hellwiga0125642006-02-16 13:31:47 +01001094 struct sas_phy *phy = dev_to_phy(rphy->dev.parent);
1095 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
1096 struct sas_internal *i = to_sas_internal(shost->transportt);
1097 u64 identifier;
1098 int error;
1099
1100 /*
1101 * Only devices behind an expander are supported, because the
1102 * enclosure identifier is a SMP feature.
1103 */
James Bottomleyf4ad7b52006-08-25 13:48:18 -05001104 if (scsi_is_sas_phy_local(phy))
Christoph Hellwiga0125642006-02-16 13:31:47 +01001105 return -EINVAL;
1106
1107 error = i->f->get_enclosure_identifier(rphy, &identifier);
1108 if (error)
1109 return error;
1110 return sprintf(buf, "0x%llx\n", (unsigned long long)identifier);
1111}
1112
Tony Jonesee959b02008-02-22 00:13:36 +01001113static SAS_DEVICE_ATTR(rphy, enclosure_identifier, S_IRUGO,
Christoph Hellwiga0125642006-02-16 13:31:47 +01001114 show_sas_rphy_enclosure_identifier, NULL);
1115
1116static ssize_t
Tony Jonesee959b02008-02-22 00:13:36 +01001117show_sas_rphy_bay_identifier(struct device *dev,
1118 struct device_attribute *attr, char *buf)
Christoph Hellwiga0125642006-02-16 13:31:47 +01001119{
Tony Jonesee959b02008-02-22 00:13:36 +01001120 struct sas_rphy *rphy = transport_class_to_rphy(dev);
Christoph Hellwiga0125642006-02-16 13:31:47 +01001121 struct sas_phy *phy = dev_to_phy(rphy->dev.parent);
1122 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
1123 struct sas_internal *i = to_sas_internal(shost->transportt);
1124 int val;
1125
James Bottomleyf4ad7b52006-08-25 13:48:18 -05001126 if (scsi_is_sas_phy_local(phy))
Christoph Hellwiga0125642006-02-16 13:31:47 +01001127 return -EINVAL;
1128
1129 val = i->f->get_bay_identifier(rphy);
1130 if (val < 0)
1131 return val;
1132 return sprintf(buf, "%d\n", val);
1133}
1134
Tony Jonesee959b02008-02-22 00:13:36 +01001135static SAS_DEVICE_ATTR(rphy, bay_identifier, S_IRUGO,
Christoph Hellwiga0125642006-02-16 13:31:47 +01001136 show_sas_rphy_bay_identifier, NULL);
1137
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001138sas_rphy_protocol_attr(identify.initiator_port_protocols,
1139 initiator_port_protocols);
1140sas_rphy_protocol_attr(identify.target_port_protocols, target_port_protocols);
1141sas_rphy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n",
1142 unsigned long long);
1143sas_rphy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8);
1144
James Bottomley42ab0362006-03-04 09:10:18 -06001145/* only need 8 bytes of data plus header (4 or 8) */
1146#define BUF_SIZE 64
1147
1148int sas_read_port_mode_page(struct scsi_device *sdev)
1149{
1150 char *buffer = kzalloc(BUF_SIZE, GFP_KERNEL), *msdata;
1151 struct sas_rphy *rphy = target_to_rphy(sdev->sdev_target);
1152 struct sas_end_device *rdev;
1153 struct scsi_mode_data mode_data;
1154 int res, error;
1155
1156 BUG_ON(rphy->identify.device_type != SAS_END_DEVICE);
1157
1158 rdev = rphy_to_end_device(rphy);
1159
1160 if (!buffer)
1161 return -ENOMEM;
1162
1163 res = scsi_mode_sense(sdev, 1, 0x19, buffer, BUF_SIZE, 30*HZ, 3,
1164 &mode_data, NULL);
1165
1166 error = -EINVAL;
1167 if (!scsi_status_is_good(res))
1168 goto out;
1169
1170 msdata = buffer + mode_data.header_length +
1171 mode_data.block_descriptor_length;
1172
1173 if (msdata - buffer > BUF_SIZE - 8)
1174 goto out;
1175
1176 error = 0;
1177
1178 rdev->ready_led_meaning = msdata[2] & 0x10 ? 1 : 0;
1179 rdev->I_T_nexus_loss_timeout = (msdata[4] << 8) + msdata[5];
1180 rdev->initiator_response_timeout = (msdata[6] << 8) + msdata[7];
1181
1182 out:
1183 kfree(buffer);
1184 return error;
1185}
1186EXPORT_SYMBOL(sas_read_port_mode_page);
1187
James Bottomley79cb1812006-03-13 13:50:04 -06001188static DECLARE_TRANSPORT_CLASS(sas_end_dev_class,
1189 "sas_end_device", NULL, NULL, NULL);
1190
James Bottomley42ab0362006-03-04 09:10:18 -06001191#define sas_end_dev_show_simple(field, name, format_string, cast) \
1192static ssize_t \
Tony Jonesee959b02008-02-22 00:13:36 +01001193show_sas_end_dev_##name(struct device *dev, \
1194 struct device_attribute *attr, char *buf) \
James Bottomley42ab0362006-03-04 09:10:18 -06001195{ \
Tony Jonesee959b02008-02-22 00:13:36 +01001196 struct sas_rphy *rphy = transport_class_to_rphy(dev); \
James Bottomley42ab0362006-03-04 09:10:18 -06001197 struct sas_end_device *rdev = rphy_to_end_device(rphy); \
1198 \
1199 return snprintf(buf, 20, format_string, cast rdev->field); \
1200}
1201
1202#define sas_end_dev_simple_attr(field, name, format_string, type) \
1203 sas_end_dev_show_simple(field, name, format_string, (type)) \
Tony Jonesee959b02008-02-22 00:13:36 +01001204static SAS_DEVICE_ATTR(end_dev, name, S_IRUGO, \
James Bottomley42ab0362006-03-04 09:10:18 -06001205 show_sas_end_dev_##name, NULL)
1206
1207sas_end_dev_simple_attr(ready_led_meaning, ready_led_meaning, "%d\n", int);
1208sas_end_dev_simple_attr(I_T_nexus_loss_timeout, I_T_nexus_loss_timeout,
1209 "%d\n", int);
1210sas_end_dev_simple_attr(initiator_response_timeout, initiator_response_timeout,
1211 "%d\n", int);
1212
James Bottomley79cb1812006-03-13 13:50:04 -06001213static DECLARE_TRANSPORT_CLASS(sas_expander_class,
1214 "sas_expander", NULL, NULL, NULL);
1215
1216#define sas_expander_show_simple(field, name, format_string, cast) \
1217static ssize_t \
Tony Jonesee959b02008-02-22 00:13:36 +01001218show_sas_expander_##name(struct device *dev, \
1219 struct device_attribute *attr, char *buf) \
James Bottomley79cb1812006-03-13 13:50:04 -06001220{ \
Tony Jonesee959b02008-02-22 00:13:36 +01001221 struct sas_rphy *rphy = transport_class_to_rphy(dev); \
James Bottomley79cb1812006-03-13 13:50:04 -06001222 struct sas_expander_device *edev = rphy_to_expander_device(rphy); \
1223 \
1224 return snprintf(buf, 20, format_string, cast edev->field); \
1225}
1226
1227#define sas_expander_simple_attr(field, name, format_string, type) \
1228 sas_expander_show_simple(field, name, format_string, (type)) \
Tony Jonesee959b02008-02-22 00:13:36 +01001229static SAS_DEVICE_ATTR(expander, name, S_IRUGO, \
James Bottomley79cb1812006-03-13 13:50:04 -06001230 show_sas_expander_##name, NULL)
1231
1232sas_expander_simple_attr(vendor_id, vendor_id, "%s\n", char *);
1233sas_expander_simple_attr(product_id, product_id, "%s\n", char *);
1234sas_expander_simple_attr(product_rev, product_rev, "%s\n", char *);
1235sas_expander_simple_attr(component_vendor_id, component_vendor_id,
1236 "%s\n", char *);
1237sas_expander_simple_attr(component_id, component_id, "%u\n", unsigned int);
1238sas_expander_simple_attr(component_revision_id, component_revision_id, "%u\n",
1239 unsigned int);
1240sas_expander_simple_attr(level, level, "%d\n", int);
James Bottomley42ab0362006-03-04 09:10:18 -06001241
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001242static DECLARE_TRANSPORT_CLASS(sas_rphy_class,
James Bottomley2f8600d2006-03-18 15:00:50 -06001243 "sas_device", NULL, NULL, NULL);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001244
1245static int sas_rphy_match(struct attribute_container *cont, struct device *dev)
1246{
1247 struct Scsi_Host *shost;
1248 struct sas_internal *i;
1249
1250 if (!scsi_is_sas_rphy(dev))
1251 return 0;
1252 shost = dev_to_shost(dev->parent->parent);
1253
1254 if (!shost->transportt)
1255 return 0;
1256 if (shost->transportt->host_attrs.ac.class !=
1257 &sas_host_class.class)
1258 return 0;
1259
1260 i = to_sas_internal(shost->transportt);
1261 return &i->rphy_attr_cont.ac == cont;
1262}
1263
James Bottomley42ab0362006-03-04 09:10:18 -06001264static int sas_end_dev_match(struct attribute_container *cont,
1265 struct device *dev)
1266{
1267 struct Scsi_Host *shost;
1268 struct sas_internal *i;
1269 struct sas_rphy *rphy;
1270
1271 if (!scsi_is_sas_rphy(dev))
1272 return 0;
1273 shost = dev_to_shost(dev->parent->parent);
1274 rphy = dev_to_rphy(dev);
1275
1276 if (!shost->transportt)
1277 return 0;
1278 if (shost->transportt->host_attrs.ac.class !=
1279 &sas_host_class.class)
1280 return 0;
1281
1282 i = to_sas_internal(shost->transportt);
1283 return &i->end_dev_attr_cont.ac == cont &&
James Bottomley2f8600d2006-03-18 15:00:50 -06001284 rphy->identify.device_type == SAS_END_DEVICE;
James Bottomley42ab0362006-03-04 09:10:18 -06001285}
1286
James Bottomley79cb1812006-03-13 13:50:04 -06001287static int sas_expander_match(struct attribute_container *cont,
1288 struct device *dev)
1289{
1290 struct Scsi_Host *shost;
1291 struct sas_internal *i;
1292 struct sas_rphy *rphy;
1293
1294 if (!scsi_is_sas_rphy(dev))
1295 return 0;
1296 shost = dev_to_shost(dev->parent->parent);
1297 rphy = dev_to_rphy(dev);
1298
1299 if (!shost->transportt)
1300 return 0;
1301 if (shost->transportt->host_attrs.ac.class !=
1302 &sas_host_class.class)
1303 return 0;
1304
1305 i = to_sas_internal(shost->transportt);
1306 return &i->expander_attr_cont.ac == cont &&
1307 (rphy->identify.device_type == SAS_EDGE_EXPANDER_DEVICE ||
James Bottomley2f8600d2006-03-18 15:00:50 -06001308 rphy->identify.device_type == SAS_FANOUT_EXPANDER_DEVICE);
James Bottomley79cb1812006-03-13 13:50:04 -06001309}
1310
James Bottomley2f8600d2006-03-18 15:00:50 -06001311static void sas_expander_release(struct device *dev)
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001312{
1313 struct sas_rphy *rphy = dev_to_rphy(dev);
James Bottomley2f8600d2006-03-18 15:00:50 -06001314 struct sas_expander_device *edev = rphy_to_expander_device(rphy);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001315
FUJITA Tomonori93c20a52008-04-19 00:43:15 +09001316 if (rphy->q)
1317 blk_cleanup_queue(rphy->q);
1318
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001319 put_device(dev->parent);
James Bottomley2f8600d2006-03-18 15:00:50 -06001320 kfree(edev);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001321}
1322
James Bottomley2f8600d2006-03-18 15:00:50 -06001323static void sas_end_device_release(struct device *dev)
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001324{
James Bottomley2f8600d2006-03-18 15:00:50 -06001325 struct sas_rphy *rphy = dev_to_rphy(dev);
1326 struct sas_end_device *edev = rphy_to_end_device(rphy);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001327
FUJITA Tomonori93c20a52008-04-19 00:43:15 +09001328 if (rphy->q)
1329 blk_cleanup_queue(rphy->q);
1330
James Bottomley2f8600d2006-03-18 15:00:50 -06001331 put_device(dev->parent);
1332 kfree(edev);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001333}
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001334
1335/**
James Bottomleyc5943d32006-06-12 09:09:18 -05001336 * sas_rphy_initialize - common rphy intialization
1337 * @rphy: rphy to initialise
1338 *
1339 * Used by both sas_end_device_alloc() and sas_expander_alloc() to
1340 * initialise the common rphy component of each.
1341 */
1342static void sas_rphy_initialize(struct sas_rphy *rphy)
1343{
1344 INIT_LIST_HEAD(&rphy->list);
1345}
1346
1347/**
James Bottomley42ab0362006-03-04 09:10:18 -06001348 * sas_end_device_alloc - allocate an rphy for an end device
Rob Landleyeb448202007-11-03 13:30:39 -05001349 * @parent: which port
James Bottomley42ab0362006-03-04 09:10:18 -06001350 *
1351 * Allocates an SAS remote PHY structure, connected to @parent.
1352 *
1353 * Returns:
1354 * SAS PHY allocated or %NULL if the allocation failed.
1355 */
James Bottomley65c92b02006-06-28 12:22:50 -04001356struct sas_rphy *sas_end_device_alloc(struct sas_port *parent)
James Bottomley42ab0362006-03-04 09:10:18 -06001357{
1358 struct Scsi_Host *shost = dev_to_shost(&parent->dev);
1359 struct sas_end_device *rdev;
1360
1361 rdev = kzalloc(sizeof(*rdev), GFP_KERNEL);
1362 if (!rdev) {
James Bottomley42ab0362006-03-04 09:10:18 -06001363 return NULL;
1364 }
1365
1366 device_initialize(&rdev->rphy.dev);
1367 rdev->rphy.dev.parent = get_device(&parent->dev);
James Bottomley2f8600d2006-03-18 15:00:50 -06001368 rdev->rphy.dev.release = sas_end_device_release;
James Bottomley65c92b02006-06-28 12:22:50 -04001369 if (scsi_is_sas_expander_device(parent->dev.parent)) {
1370 struct sas_rphy *rphy = dev_to_rphy(parent->dev.parent);
Kay Sievers71610f52008-12-03 22:41:36 +01001371 dev_set_name(&rdev->rphy.dev, "end_device-%d:%d:%d",
1372 shost->host_no, rphy->scsi_target_id,
1373 parent->port_identifier);
James Bottomley65c92b02006-06-28 12:22:50 -04001374 } else
Kay Sievers71610f52008-12-03 22:41:36 +01001375 dev_set_name(&rdev->rphy.dev, "end_device-%d:%d",
1376 shost->host_no, parent->port_identifier);
James Bottomley42ab0362006-03-04 09:10:18 -06001377 rdev->rphy.identify.device_type = SAS_END_DEVICE;
James Bottomleyc5943d32006-06-12 09:09:18 -05001378 sas_rphy_initialize(&rdev->rphy);
James Bottomley42ab0362006-03-04 09:10:18 -06001379 transport_setup_device(&rdev->rphy.dev);
1380
1381 return &rdev->rphy;
1382}
1383EXPORT_SYMBOL(sas_end_device_alloc);
1384
James Bottomley79cb1812006-03-13 13:50:04 -06001385/**
1386 * sas_expander_alloc - allocate an rphy for an end device
Rob Landleyeb448202007-11-03 13:30:39 -05001387 * @parent: which port
1388 * @type: SAS_EDGE_EXPANDER_DEVICE or SAS_FANOUT_EXPANDER_DEVICE
James Bottomley79cb1812006-03-13 13:50:04 -06001389 *
1390 * Allocates an SAS remote PHY structure, connected to @parent.
1391 *
1392 * Returns:
1393 * SAS PHY allocated or %NULL if the allocation failed.
1394 */
James Bottomley65c92b02006-06-28 12:22:50 -04001395struct sas_rphy *sas_expander_alloc(struct sas_port *parent,
James Bottomley79cb1812006-03-13 13:50:04 -06001396 enum sas_device_type type)
1397{
1398 struct Scsi_Host *shost = dev_to_shost(&parent->dev);
1399 struct sas_expander_device *rdev;
1400 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
1401
1402 BUG_ON(type != SAS_EDGE_EXPANDER_DEVICE &&
1403 type != SAS_FANOUT_EXPANDER_DEVICE);
1404
1405 rdev = kzalloc(sizeof(*rdev), GFP_KERNEL);
1406 if (!rdev) {
James Bottomley79cb1812006-03-13 13:50:04 -06001407 return NULL;
1408 }
1409
1410 device_initialize(&rdev->rphy.dev);
1411 rdev->rphy.dev.parent = get_device(&parent->dev);
James Bottomley2f8600d2006-03-18 15:00:50 -06001412 rdev->rphy.dev.release = sas_expander_release;
James Bottomley79cb1812006-03-13 13:50:04 -06001413 mutex_lock(&sas_host->lock);
1414 rdev->rphy.scsi_target_id = sas_host->next_expander_id++;
1415 mutex_unlock(&sas_host->lock);
Kay Sievers71610f52008-12-03 22:41:36 +01001416 dev_set_name(&rdev->rphy.dev, "expander-%d:%d",
1417 shost->host_no, rdev->rphy.scsi_target_id);
James Bottomley79cb1812006-03-13 13:50:04 -06001418 rdev->rphy.identify.device_type = type;
James Bottomleyc5943d32006-06-12 09:09:18 -05001419 sas_rphy_initialize(&rdev->rphy);
James Bottomley79cb1812006-03-13 13:50:04 -06001420 transport_setup_device(&rdev->rphy.dev);
1421
1422 return &rdev->rphy;
1423}
1424EXPORT_SYMBOL(sas_expander_alloc);
James Bottomley42ab0362006-03-04 09:10:18 -06001425
1426/**
Rob Landleyeb448202007-11-03 13:30:39 -05001427 * sas_rphy_add - add a SAS remote PHY to the device hierarchy
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001428 * @rphy: The remote PHY to be added
1429 *
1430 * Publishes a SAS remote PHY to the rest of the system.
1431 */
1432int sas_rphy_add(struct sas_rphy *rphy)
1433{
James Bottomley65c92b02006-06-28 12:22:50 -04001434 struct sas_port *parent = dev_to_sas_port(rphy->dev.parent);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001435 struct Scsi_Host *shost = dev_to_shost(parent->dev.parent);
1436 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
1437 struct sas_identify *identify = &rphy->identify;
1438 int error;
1439
1440 if (parent->rphy)
1441 return -ENXIO;
1442 parent->rphy = rphy;
1443
1444 error = device_add(&rphy->dev);
1445 if (error)
1446 return error;
1447 transport_add_device(&rphy->dev);
1448 transport_configure_device(&rphy->dev);
James Bottomley39dca552007-07-20 18:22:17 -05001449 if (sas_bsg_initialize(shost, rphy))
Kay Sievers71610f52008-12-03 22:41:36 +01001450 printk("fail to a bsg device %s\n", dev_name(&rphy->dev));
James Bottomley39dca552007-07-20 18:22:17 -05001451
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001452
Christoph Hellwige02f3f52006-01-13 19:04:00 +01001453 mutex_lock(&sas_host->lock);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001454 list_add_tail(&rphy->list, &sas_host->rphy_list);
1455 if (identify->device_type == SAS_END_DEVICE &&
1456 (identify->target_port_protocols &
1457 (SAS_PROTOCOL_SSP|SAS_PROTOCOL_STP|SAS_PROTOCOL_SATA)))
1458 rphy->scsi_target_id = sas_host->next_target_id++;
James Bottomley7676f832006-04-14 09:47:59 -05001459 else if (identify->device_type == SAS_END_DEVICE)
1460 rphy->scsi_target_id = -1;
Christoph Hellwige02f3f52006-01-13 19:04:00 +01001461 mutex_unlock(&sas_host->lock);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001462
James Bottomley79cb1812006-03-13 13:50:04 -06001463 if (identify->device_type == SAS_END_DEVICE &&
1464 rphy->scsi_target_id != -1) {
James Bottomleye8bf3942006-07-11 17:49:34 -04001465 scsi_scan_target(&rphy->dev, 0,
Darrick J. Wongc8490f32007-01-11 14:15:09 -08001466 rphy->scsi_target_id, SCAN_WILD_CARD, 0);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001467 }
1468
1469 return 0;
1470}
1471EXPORT_SYMBOL(sas_rphy_add);
1472
1473/**
Rob Landleyeb448202007-11-03 13:30:39 -05001474 * sas_rphy_free - free a SAS remote PHY
1475 * @rphy: SAS remote PHY to free
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001476 *
1477 * Frees the specified SAS remote PHY.
1478 *
1479 * Note:
1480 * This function must only be called on a remote
1481 * PHY that has not sucessfully been added using
Darrick J. Wong6f63caa2007-01-26 14:08:43 -08001482 * sas_rphy_add() (or has been sas_rphy_remove()'d)
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001483 */
1484void sas_rphy_free(struct sas_rphy *rphy)
1485{
Mike Anderson92aab642006-03-27 09:37:28 -08001486 struct device *dev = &rphy->dev;
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001487 struct Scsi_Host *shost = dev_to_shost(rphy->dev.parent->parent);
1488 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
1489
Christoph Hellwige02f3f52006-01-13 19:04:00 +01001490 mutex_lock(&sas_host->lock);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001491 list_del(&rphy->list);
Christoph Hellwige02f3f52006-01-13 19:04:00 +01001492 mutex_unlock(&sas_host->lock);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001493
James Bottomleyb6aff662007-07-20 11:10:05 -05001494 sas_bsg_remove(shost, rphy);
1495
Mike Anderson92aab642006-03-27 09:37:28 -08001496 transport_destroy_device(dev);
James Bottomley2f8600d2006-03-18 15:00:50 -06001497
Mike Anderson92aab642006-03-27 09:37:28 -08001498 put_device(dev);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001499}
1500EXPORT_SYMBOL(sas_rphy_free);
1501
1502/**
Rob Landleyeb448202007-11-03 13:30:39 -05001503 * sas_rphy_delete - remove and free SAS remote PHY
Darrick J. Wong6f63caa2007-01-26 14:08:43 -08001504 * @rphy: SAS remote PHY to remove and free
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001505 *
Darrick J. Wong6f63caa2007-01-26 14:08:43 -08001506 * Removes the specified SAS remote PHY and frees it.
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001507 */
1508void
1509sas_rphy_delete(struct sas_rphy *rphy)
1510{
Darrick J. Wong6f63caa2007-01-26 14:08:43 -08001511 sas_rphy_remove(rphy);
1512 sas_rphy_free(rphy);
1513}
1514EXPORT_SYMBOL(sas_rphy_delete);
1515
1516/**
Rob Landleyeb448202007-11-03 13:30:39 -05001517 * sas_rphy_remove - remove SAS remote PHY
Darrick J. Wong6f63caa2007-01-26 14:08:43 -08001518 * @rphy: SAS remote phy to remove
1519 *
1520 * Removes the specified SAS remote PHY.
1521 */
1522void
1523sas_rphy_remove(struct sas_rphy *rphy)
1524{
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001525 struct device *dev = &rphy->dev;
James Bottomley65c92b02006-06-28 12:22:50 -04001526 struct sas_port *parent = dev_to_sas_port(dev->parent);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001527
Christoph Hellwigd4054232006-01-04 13:45:20 +01001528 switch (rphy->identify.device_type) {
1529 case SAS_END_DEVICE:
1530 scsi_remove_target(dev);
1531 break;
1532 case SAS_EDGE_EXPANDER_DEVICE:
1533 case SAS_FANOUT_EXPANDER_DEVICE:
James Bottomley65c92b02006-06-28 12:22:50 -04001534 sas_remove_children(dev);
Christoph Hellwigd4054232006-01-04 13:45:20 +01001535 break;
1536 default:
1537 break;
1538 }
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001539
Christoph Hellwigfe8b2302005-09-25 23:10:33 +02001540 transport_remove_device(dev);
1541 device_del(dev);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001542
Christoph Hellwig33b114e2006-01-11 14:20:43 +01001543 parent->rphy = NULL;
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001544}
Darrick J. Wong6f63caa2007-01-26 14:08:43 -08001545EXPORT_SYMBOL(sas_rphy_remove);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001546
1547/**
Rob Landleyeb448202007-11-03 13:30:39 -05001548 * scsi_is_sas_rphy - check if a struct device represents a SAS remote PHY
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001549 * @dev: device to check
1550 *
1551 * Returns:
1552 * %1 if the device represents a SAS remote PHY, %0 else
1553 */
1554int scsi_is_sas_rphy(const struct device *dev)
1555{
James Bottomley2f8600d2006-03-18 15:00:50 -06001556 return dev->release == sas_end_device_release ||
1557 dev->release == sas_expander_release;
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001558}
1559EXPORT_SYMBOL(scsi_is_sas_rphy);
1560
1561
1562/*
1563 * SCSI scan helper
1564 */
1565
Christoph Hellwige02f3f52006-01-13 19:04:00 +01001566static int sas_user_scan(struct Scsi_Host *shost, uint channel,
1567 uint id, uint lun)
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001568{
1569 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
1570 struct sas_rphy *rphy;
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001571
Christoph Hellwige02f3f52006-01-13 19:04:00 +01001572 mutex_lock(&sas_host->lock);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001573 list_for_each_entry(rphy, &sas_host->rphy_list, list) {
James Bottomley6d99a3f2006-05-19 10:49:37 -05001574 if (rphy->identify.device_type != SAS_END_DEVICE ||
1575 rphy->scsi_target_id == -1)
Christoph Hellwige02f3f52006-01-13 19:04:00 +01001576 continue;
1577
James Bottomleye8bf3942006-07-11 17:49:34 -04001578 if ((channel == SCAN_WILD_CARD || channel == 0) &&
Christoph Hellwige02f3f52006-01-13 19:04:00 +01001579 (id == SCAN_WILD_CARD || id == rphy->scsi_target_id)) {
James Bottomleye8bf3942006-07-11 17:49:34 -04001580 scsi_scan_target(&rphy->dev, 0,
Christoph Hellwige02f3f52006-01-13 19:04:00 +01001581 rphy->scsi_target_id, lun, 1);
1582 }
1583 }
1584 mutex_unlock(&sas_host->lock);
1585
1586 return 0;
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001587}
1588
1589
1590/*
1591 * Setup / Teardown code
1592 */
1593
James Bottomleyd24e1ee2006-09-06 19:25:22 -05001594#define SETUP_TEMPLATE(attrb, field, perm, test) \
Tony Jonesee959b02008-02-22 00:13:36 +01001595 i->private_##attrb[count] = dev_attr_##field; \
James Bottomley42ab0362006-03-04 09:10:18 -06001596 i->private_##attrb[count].attr.mode = perm; \
James Bottomley42ab0362006-03-04 09:10:18 -06001597 i->attrb[count] = &i->private_##attrb[count]; \
1598 if (test) \
1599 count++
1600
James Bottomleyd24e1ee2006-09-06 19:25:22 -05001601#define SETUP_TEMPLATE_RW(attrb, field, perm, test, ro_test, ro_perm) \
Tony Jonesee959b02008-02-22 00:13:36 +01001602 i->private_##attrb[count] = dev_attr_##field; \
James Bottomleyd24e1ee2006-09-06 19:25:22 -05001603 i->private_##attrb[count].attr.mode = perm; \
1604 if (ro_test) { \
1605 i->private_##attrb[count].attr.mode = ro_perm; \
1606 i->private_##attrb[count].store = NULL; \
1607 } \
1608 i->attrb[count] = &i->private_##attrb[count]; \
1609 if (test) \
1610 count++
James Bottomley42ab0362006-03-04 09:10:18 -06001611
1612#define SETUP_RPORT_ATTRIBUTE(field) \
1613 SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, 1)
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001614
James Bottomleydd9fbb522006-03-02 16:01:31 -06001615#define SETUP_OPTIONAL_RPORT_ATTRIBUTE(field, func) \
James Bottomley42ab0362006-03-04 09:10:18 -06001616 SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, i->f->func)
James Bottomleydd9fbb522006-03-02 16:01:31 -06001617
James Bottomley65c92b02006-06-28 12:22:50 -04001618#define SETUP_PHY_ATTRIBUTE(field) \
James Bottomley42ab0362006-03-04 09:10:18 -06001619 SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, 1)
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001620
James Bottomleyd24e1ee2006-09-06 19:25:22 -05001621#define SETUP_PHY_ATTRIBUTE_RW(field) \
1622 SETUP_TEMPLATE_RW(phy_attrs, field, S_IRUGO | S_IWUSR, 1, \
1623 !i->f->set_phy_speed, S_IRUGO)
1624
Darrick J. Wongacbf1672007-01-11 14:14:57 -08001625#define SETUP_OPTIONAL_PHY_ATTRIBUTE_RW(field, func) \
1626 SETUP_TEMPLATE_RW(phy_attrs, field, S_IRUGO | S_IWUSR, 1, \
1627 !i->f->func, S_IRUGO)
1628
James Bottomley65c92b02006-06-28 12:22:50 -04001629#define SETUP_PORT_ATTRIBUTE(field) \
1630 SETUP_TEMPLATE(port_attrs, field, S_IRUGO, 1)
1631
1632#define SETUP_OPTIONAL_PHY_ATTRIBUTE(field, func) \
James Bottomley42ab0362006-03-04 09:10:18 -06001633 SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, i->f->func)
James Bottomleydd9fbb522006-03-02 16:01:31 -06001634
James Bottomley65c92b02006-06-28 12:22:50 -04001635#define SETUP_PHY_ATTRIBUTE_WRONLY(field) \
Darrick J. Wongfe3b5bf2007-01-11 14:15:35 -08001636 SETUP_TEMPLATE(phy_attrs, field, S_IWUSR, 1)
Christoph Hellwig07ba3a92005-10-19 20:01:31 +02001637
James Bottomley65c92b02006-06-28 12:22:50 -04001638#define SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(field, func) \
Darrick J. Wongfe3b5bf2007-01-11 14:15:35 -08001639 SETUP_TEMPLATE(phy_attrs, field, S_IWUSR, i->f->func)
James Bottomleydd9fbb522006-03-02 16:01:31 -06001640
James Bottomley42ab0362006-03-04 09:10:18 -06001641#define SETUP_END_DEV_ATTRIBUTE(field) \
1642 SETUP_TEMPLATE(end_dev_attrs, field, S_IRUGO, 1)
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001643
James Bottomley79cb1812006-03-13 13:50:04 -06001644#define SETUP_EXPANDER_ATTRIBUTE(field) \
1645 SETUP_TEMPLATE(expander_attrs, expander_##field, S_IRUGO, 1)
1646
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001647/**
Rob Landleyeb448202007-11-03 13:30:39 -05001648 * sas_attach_transport - instantiate SAS transport template
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001649 * @ft: SAS transport class function template
1650 */
1651struct scsi_transport_template *
1652sas_attach_transport(struct sas_function_template *ft)
1653{
1654 struct sas_internal *i;
1655 int count;
1656
Jes Sorensen24669f752006-01-16 10:31:18 -05001657 i = kzalloc(sizeof(struct sas_internal), GFP_KERNEL);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001658 if (!i)
1659 return NULL;
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001660
Christoph Hellwige02f3f52006-01-13 19:04:00 +01001661 i->t.user_scan = sas_user_scan;
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001662
1663 i->t.host_attrs.ac.attrs = &i->host_attrs[0];
1664 i->t.host_attrs.ac.class = &sas_host_class.class;
1665 i->t.host_attrs.ac.match = sas_host_match;
1666 transport_container_register(&i->t.host_attrs);
1667 i->t.host_size = sizeof(struct sas_host_attrs);
1668
1669 i->phy_attr_cont.ac.class = &sas_phy_class.class;
1670 i->phy_attr_cont.ac.attrs = &i->phy_attrs[0];
1671 i->phy_attr_cont.ac.match = sas_phy_match;
1672 transport_container_register(&i->phy_attr_cont);
1673
James Bottomley65c92b02006-06-28 12:22:50 -04001674 i->port_attr_cont.ac.class = &sas_port_class.class;
1675 i->port_attr_cont.ac.attrs = &i->port_attrs[0];
1676 i->port_attr_cont.ac.match = sas_port_match;
1677 transport_container_register(&i->port_attr_cont);
1678
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001679 i->rphy_attr_cont.ac.class = &sas_rphy_class.class;
1680 i->rphy_attr_cont.ac.attrs = &i->rphy_attrs[0];
1681 i->rphy_attr_cont.ac.match = sas_rphy_match;
1682 transport_container_register(&i->rphy_attr_cont);
1683
James Bottomley42ab0362006-03-04 09:10:18 -06001684 i->end_dev_attr_cont.ac.class = &sas_end_dev_class.class;
1685 i->end_dev_attr_cont.ac.attrs = &i->end_dev_attrs[0];
1686 i->end_dev_attr_cont.ac.match = sas_end_dev_match;
1687 transport_container_register(&i->end_dev_attr_cont);
1688
James Bottomley79cb1812006-03-13 13:50:04 -06001689 i->expander_attr_cont.ac.class = &sas_expander_class.class;
1690 i->expander_attr_cont.ac.attrs = &i->expander_attrs[0];
1691 i->expander_attr_cont.ac.match = sas_expander_match;
1692 transport_container_register(&i->expander_attr_cont);
1693
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001694 i->f = ft;
1695
1696 count = 0;
James Bottomley65c92b02006-06-28 12:22:50 -04001697 SETUP_PORT_ATTRIBUTE(num_phys);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001698 i->host_attrs[count] = NULL;
1699
1700 count = 0;
James Bottomley65c92b02006-06-28 12:22:50 -04001701 SETUP_PHY_ATTRIBUTE(initiator_port_protocols);
1702 SETUP_PHY_ATTRIBUTE(target_port_protocols);
1703 SETUP_PHY_ATTRIBUTE(device_type);
1704 SETUP_PHY_ATTRIBUTE(sas_address);
1705 SETUP_PHY_ATTRIBUTE(phy_identifier);
1706 //SETUP_PHY_ATTRIBUTE(port_identifier);
1707 SETUP_PHY_ATTRIBUTE(negotiated_linkrate);
1708 SETUP_PHY_ATTRIBUTE(minimum_linkrate_hw);
James Bottomleyd24e1ee2006-09-06 19:25:22 -05001709 SETUP_PHY_ATTRIBUTE_RW(minimum_linkrate);
James Bottomley65c92b02006-06-28 12:22:50 -04001710 SETUP_PHY_ATTRIBUTE(maximum_linkrate_hw);
James Bottomleyd24e1ee2006-09-06 19:25:22 -05001711 SETUP_PHY_ATTRIBUTE_RW(maximum_linkrate);
Christoph Hellwigc3ee74c2005-09-19 21:59:42 +02001712
James Bottomley65c92b02006-06-28 12:22:50 -04001713 SETUP_PHY_ATTRIBUTE(invalid_dword_count);
1714 SETUP_PHY_ATTRIBUTE(running_disparity_error_count);
1715 SETUP_PHY_ATTRIBUTE(loss_of_dword_sync_count);
1716 SETUP_PHY_ATTRIBUTE(phy_reset_problem_count);
1717 SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(link_reset, phy_reset);
1718 SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(hard_reset, phy_reset);
Darrick J. Wongacbf1672007-01-11 14:14:57 -08001719 SETUP_OPTIONAL_PHY_ATTRIBUTE_RW(enable, phy_enable);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001720 i->phy_attrs[count] = NULL;
1721
1722 count = 0;
James Bottomley65c92b02006-06-28 12:22:50 -04001723 SETUP_PORT_ATTRIBUTE(num_phys);
1724 i->port_attrs[count] = NULL;
1725
1726 count = 0;
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001727 SETUP_RPORT_ATTRIBUTE(rphy_initiator_port_protocols);
1728 SETUP_RPORT_ATTRIBUTE(rphy_target_port_protocols);
1729 SETUP_RPORT_ATTRIBUTE(rphy_device_type);
1730 SETUP_RPORT_ATTRIBUTE(rphy_sas_address);
1731 SETUP_RPORT_ATTRIBUTE(rphy_phy_identifier);
James Bottomleydd9fbb522006-03-02 16:01:31 -06001732 SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_enclosure_identifier,
1733 get_enclosure_identifier);
1734 SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_bay_identifier,
1735 get_bay_identifier);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001736 i->rphy_attrs[count] = NULL;
1737
James Bottomley42ab0362006-03-04 09:10:18 -06001738 count = 0;
1739 SETUP_END_DEV_ATTRIBUTE(end_dev_ready_led_meaning);
1740 SETUP_END_DEV_ATTRIBUTE(end_dev_I_T_nexus_loss_timeout);
1741 SETUP_END_DEV_ATTRIBUTE(end_dev_initiator_response_timeout);
1742 i->end_dev_attrs[count] = NULL;
1743
James Bottomley79cb1812006-03-13 13:50:04 -06001744 count = 0;
1745 SETUP_EXPANDER_ATTRIBUTE(vendor_id);
1746 SETUP_EXPANDER_ATTRIBUTE(product_id);
1747 SETUP_EXPANDER_ATTRIBUTE(product_rev);
1748 SETUP_EXPANDER_ATTRIBUTE(component_vendor_id);
1749 SETUP_EXPANDER_ATTRIBUTE(component_id);
1750 SETUP_EXPANDER_ATTRIBUTE(component_revision_id);
1751 SETUP_EXPANDER_ATTRIBUTE(level);
1752 i->expander_attrs[count] = NULL;
1753
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001754 return &i->t;
1755}
1756EXPORT_SYMBOL(sas_attach_transport);
1757
1758/**
Rob Landleyeb448202007-11-03 13:30:39 -05001759 * sas_release_transport - release SAS transport template instance
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001760 * @t: transport template instance
1761 */
1762void sas_release_transport(struct scsi_transport_template *t)
1763{
1764 struct sas_internal *i = to_sas_internal(t);
1765
1766 transport_container_unregister(&i->t.host_attrs);
1767 transport_container_unregister(&i->phy_attr_cont);
James Bottomley65c92b02006-06-28 12:22:50 -04001768 transport_container_unregister(&i->port_attr_cont);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001769 transport_container_unregister(&i->rphy_attr_cont);
James Bottomleydb82f842006-03-09 22:06:36 -05001770 transport_container_unregister(&i->end_dev_attr_cont);
James Bottomley79cb1812006-03-13 13:50:04 -06001771 transport_container_unregister(&i->expander_attr_cont);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001772
1773 kfree(i);
1774}
1775EXPORT_SYMBOL(sas_release_transport);
1776
1777static __init int sas_transport_init(void)
1778{
1779 int error;
1780
1781 error = transport_class_register(&sas_host_class);
1782 if (error)
1783 goto out;
1784 error = transport_class_register(&sas_phy_class);
1785 if (error)
1786 goto out_unregister_transport;
James Bottomley65c92b02006-06-28 12:22:50 -04001787 error = transport_class_register(&sas_port_class);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001788 if (error)
1789 goto out_unregister_phy;
James Bottomley65c92b02006-06-28 12:22:50 -04001790 error = transport_class_register(&sas_rphy_class);
1791 if (error)
1792 goto out_unregister_port;
James Bottomley42ab0362006-03-04 09:10:18 -06001793 error = transport_class_register(&sas_end_dev_class);
1794 if (error)
1795 goto out_unregister_rphy;
James Bottomley79cb1812006-03-13 13:50:04 -06001796 error = transport_class_register(&sas_expander_class);
1797 if (error)
1798 goto out_unregister_end_dev;
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001799
1800 return 0;
1801
James Bottomley79cb1812006-03-13 13:50:04 -06001802 out_unregister_end_dev:
1803 transport_class_unregister(&sas_end_dev_class);
James Bottomley42ab0362006-03-04 09:10:18 -06001804 out_unregister_rphy:
1805 transport_class_unregister(&sas_rphy_class);
James Bottomley65c92b02006-06-28 12:22:50 -04001806 out_unregister_port:
1807 transport_class_unregister(&sas_port_class);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001808 out_unregister_phy:
1809 transport_class_unregister(&sas_phy_class);
1810 out_unregister_transport:
1811 transport_class_unregister(&sas_host_class);
1812 out:
1813 return error;
1814
1815}
1816
1817static void __exit sas_transport_exit(void)
1818{
1819 transport_class_unregister(&sas_host_class);
1820 transport_class_unregister(&sas_phy_class);
James Bottomley65c92b02006-06-28 12:22:50 -04001821 transport_class_unregister(&sas_port_class);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001822 transport_class_unregister(&sas_rphy_class);
James Bottomley42ab0362006-03-04 09:10:18 -06001823 transport_class_unregister(&sas_end_dev_class);
James Bottomley79cb1812006-03-13 13:50:04 -06001824 transport_class_unregister(&sas_expander_class);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001825}
1826
1827MODULE_AUTHOR("Christoph Hellwig");
Alexis Bruemmer86b9c4c2007-01-16 15:36:12 -08001828MODULE_DESCRIPTION("SAS Transport Attributes");
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001829MODULE_LICENSE("GPL");
1830
1831module_init(sas_transport_init);
1832module_exit(sas_transport_exit);