blob: 30d26e345dcc797430667ebe2ea0fa1f288fc372 [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" },
Sreekanth Reddyd84fd392012-11-30 07:43:11 +0530154 { SAS_LINK_RATE_12_0_GBPS, "12.0 Gbit" },
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200155};
156sas_bitfield_name_search(linkspeed, sas_linkspeed_names)
James Bottomleyd24e1ee2006-09-06 19:25:22 -0500157sas_bitfield_name_set(linkspeed, sas_linkspeed_names)
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200158
James Bottomley0f880092010-01-18 10:14:51 -0600159static struct sas_end_device *sas_sdev_to_rdev(struct scsi_device *sdev)
160{
161 struct sas_rphy *rphy = target_to_rphy(sdev->sdev_target);
162 struct sas_end_device *rdev;
163
164 BUG_ON(rphy->identify.device_type != SAS_END_DEVICE);
165
166 rdev = rphy_to_end_device(rphy);
167 return rdev;
168}
169
FUJITA Tomonori7aa68e82007-07-09 12:52:06 +0900170static void sas_smp_request(struct request_queue *q, struct Scsi_Host *shost,
171 struct sas_rphy *rphy)
172{
173 struct request *req;
174 int ret;
175 int (*handler)(struct Scsi_Host *, struct sas_rphy *, struct request *);
176
Jens Axboe7eaceac2011-03-10 08:52:07 +0100177 while ((req = blk_fetch_request(q)) != NULL) {
FUJITA Tomonori7aa68e82007-07-09 12:52:06 +0900178 spin_unlock_irq(q->queue_lock);
179
180 handler = to_sas_internal(shost->transportt)->f->smp_handler;
181 ret = handler(shost, rphy, req);
James Bottomley2d507a02007-12-29 10:59:53 -0600182 req->errors = ret;
FUJITA Tomonori7aa68e82007-07-09 12:52:06 +0900183
FUJITA Tomonori93bdcba2009-06-17 15:10:10 +0900184 blk_end_request_all(req, ret);
FUJITA Tomonori7aa68e82007-07-09 12:52:06 +0900185
FUJITA Tomonori93bdcba2009-06-17 15:10:10 +0900186 spin_lock_irq(q->queue_lock);
FUJITA Tomonori7aa68e82007-07-09 12:52:06 +0900187 }
188}
189
190static void sas_host_smp_request(struct request_queue *q)
191{
192 sas_smp_request(q, (struct Scsi_Host *)q->queuedata, NULL);
193}
194
195static void sas_non_host_smp_request(struct request_queue *q)
196{
197 struct sas_rphy *rphy = q->queuedata;
198 sas_smp_request(q, rphy_to_shost(rphy), rphy);
199}
200
FUJITA Tomonori93c20a52008-04-19 00:43:15 +0900201static void sas_host_release(struct device *dev)
202{
203 struct Scsi_Host *shost = dev_to_shost(dev);
204 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
205 struct request_queue *q = sas_host->q;
206
207 if (q)
208 blk_cleanup_queue(q);
209}
210
James Bottomley39dca552007-07-20 18:22:17 -0500211static int sas_bsg_initialize(struct Scsi_Host *shost, struct sas_rphy *rphy)
FUJITA Tomonori7aa68e82007-07-09 12:52:06 +0900212{
213 struct request_queue *q;
214 int error;
James Bottomley39dca552007-07-20 18:22:17 -0500215 struct device *dev;
Kay Sievers71610f52008-12-03 22:41:36 +0100216 char namebuf[20];
James Bottomley39dca552007-07-20 18:22:17 -0500217 const char *name;
FUJITA Tomonori93c20a52008-04-19 00:43:15 +0900218 void (*release)(struct device *);
FUJITA Tomonori7aa68e82007-07-09 12:52:06 +0900219
220 if (!to_sas_internal(shost->transportt)->f->smp_handler) {
221 printk("%s can't handle SMP requests\n", shost->hostt->name);
222 return 0;
223 }
224
James Bottomley39dca552007-07-20 18:22:17 -0500225 if (rphy) {
FUJITA Tomonori7aa68e82007-07-09 12:52:06 +0900226 q = blk_init_queue(sas_non_host_smp_request, NULL);
James Bottomley39dca552007-07-20 18:22:17 -0500227 dev = &rphy->dev;
Kay Sievers71610f52008-12-03 22:41:36 +0100228 name = dev_name(dev);
FUJITA Tomonori93c20a52008-04-19 00:43:15 +0900229 release = NULL;
James Bottomley39dca552007-07-20 18:22:17 -0500230 } else {
FUJITA Tomonori7aa68e82007-07-09 12:52:06 +0900231 q = blk_init_queue(sas_host_smp_request, NULL);
James Bottomley39dca552007-07-20 18:22:17 -0500232 dev = &shost->shost_gendev;
233 snprintf(namebuf, sizeof(namebuf),
234 "sas_host%d", shost->host_no);
235 name = namebuf;
FUJITA Tomonori93c20a52008-04-19 00:43:15 +0900236 release = sas_host_release;
James Bottomley39dca552007-07-20 18:22:17 -0500237 }
FUJITA Tomonori7aa68e82007-07-09 12:52:06 +0900238 if (!q)
239 return -ENOMEM;
240
FUJITA Tomonori93c20a52008-04-19 00:43:15 +0900241 error = bsg_register_queue(q, dev, name, release);
FUJITA Tomonori7aa68e82007-07-09 12:52:06 +0900242 if (error) {
243 blk_cleanup_queue(q);
244 return -ENOMEM;
245 }
246
247 if (rphy)
James Bottomleyb6aff662007-07-20 11:10:05 -0500248 rphy->q = q;
249 else
250 to_sas_host_attrs(shost)->q = q;
251
252 if (rphy)
FUJITA Tomonori7aa68e82007-07-09 12:52:06 +0900253 q->queuedata = rphy;
254 else
255 q->queuedata = shost;
256
Nick Piggin75ad23b2008-04-29 14:48:33 +0200257 queue_flag_set_unlocked(QUEUE_FLAG_BIDI, q);
FUJITA Tomonori7aa68e82007-07-09 12:52:06 +0900258 return 0;
259}
260
James Bottomleyb6aff662007-07-20 11:10:05 -0500261static void sas_bsg_remove(struct Scsi_Host *shost, struct sas_rphy *rphy)
262{
263 struct request_queue *q;
264
265 if (rphy)
266 q = rphy->q;
267 else
268 q = to_sas_host_attrs(shost)->q;
269
270 if (!q)
271 return;
272
273 bsg_unregister_queue(q);
James Bottomleyb6aff662007-07-20 11:10:05 -0500274}
275
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200276/*
277 * SAS host attributes
278 */
279
James Bottomley37be6ee2005-09-09 18:38:27 -0500280static int sas_host_setup(struct transport_container *tc, struct device *dev,
Tony Jonesee959b02008-02-22 00:13:36 +0100281 struct device *cdev)
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200282{
283 struct Scsi_Host *shost = dev_to_shost(dev);
284 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
285
286 INIT_LIST_HEAD(&sas_host->rphy_list);
Christoph Hellwige02f3f52006-01-13 19:04:00 +0100287 mutex_init(&sas_host->lock);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200288 sas_host->next_target_id = 0;
James Bottomley79cb1812006-03-13 13:50:04 -0600289 sas_host->next_expander_id = 0;
James Bottomleyc9fefeb2006-07-02 11:10:18 -0500290 sas_host->next_port_id = 0;
FUJITA Tomonori7aa68e82007-07-09 12:52:06 +0900291
James Bottomley39dca552007-07-20 18:22:17 -0500292 if (sas_bsg_initialize(shost, NULL))
FUJITA Tomonori7aa68e82007-07-09 12:52:06 +0900293 dev_printk(KERN_ERR, dev, "fail to a bsg device %d\n",
294 shost->host_no);
295
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200296 return 0;
297}
298
James Bottomleyb6aff662007-07-20 11:10:05 -0500299static int sas_host_remove(struct transport_container *tc, struct device *dev,
Tony Jonesee959b02008-02-22 00:13:36 +0100300 struct device *cdev)
James Bottomleyb6aff662007-07-20 11:10:05 -0500301{
302 struct Scsi_Host *shost = dev_to_shost(dev);
303
304 sas_bsg_remove(shost, NULL);
305
306 return 0;
307}
308
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200309static DECLARE_TRANSPORT_CLASS(sas_host_class,
James Bottomleyb6aff662007-07-20 11:10:05 -0500310 "sas_host", sas_host_setup, sas_host_remove, NULL);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200311
312static int sas_host_match(struct attribute_container *cont,
313 struct device *dev)
314{
315 struct Scsi_Host *shost;
316 struct sas_internal *i;
317
318 if (!scsi_is_host_device(dev))
319 return 0;
320 shost = dev_to_shost(dev);
321
322 if (!shost->transportt)
323 return 0;
324 if (shost->transportt->host_attrs.ac.class !=
325 &sas_host_class.class)
326 return 0;
327
328 i = to_sas_internal(shost->transportt);
329 return &i->t.host_attrs.ac == cont;
330}
331
332static int do_sas_phy_delete(struct device *dev, void *data)
333{
James Bottomley65c92b02006-06-28 12:22:50 -0400334 int pass = (int)(unsigned long)data;
335
336 if (pass == 0 && scsi_is_sas_port(dev))
337 sas_port_delete(dev_to_sas_port(dev));
338 else if (pass == 1 && scsi_is_sas_phy(dev))
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200339 sas_phy_delete(dev_to_phy(dev));
340 return 0;
341}
342
343/**
Rob Landleyeb448202007-11-03 13:30:39 -0500344 * sas_remove_children - tear down a devices SAS data structures
James Bottomley65c92b02006-06-28 12:22:50 -0400345 * @dev: device belonging to the sas object
346 *
347 * Removes all SAS PHYs and remote PHYs for a given object
348 */
349void sas_remove_children(struct device *dev)
350{
351 device_for_each_child(dev, (void *)0, do_sas_phy_delete);
352 device_for_each_child(dev, (void *)1, do_sas_phy_delete);
353}
354EXPORT_SYMBOL(sas_remove_children);
355
356/**
Rob Landleyeb448202007-11-03 13:30:39 -0500357 * sas_remove_host - tear down a Scsi_Host's SAS data structures
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200358 * @shost: Scsi Host that is torn down
359 *
360 * Removes all SAS PHYs and remote PHYs for a given Scsi_Host.
361 * Must be called just before scsi_remove_host for SAS HBAs.
362 */
363void sas_remove_host(struct Scsi_Host *shost)
364{
James Bottomley65c92b02006-06-28 12:22:50 -0400365 sas_remove_children(&shost->shost_gendev);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200366}
367EXPORT_SYMBOL(sas_remove_host);
368
James Bottomley0f880092010-01-18 10:14:51 -0600369/**
370 * sas_tlr_supported - checking TLR bit in vpd 0x90
371 * @sdev: scsi device struct
372 *
373 * Check Transport Layer Retries are supported or not.
374 * If vpd page 0x90 is present, TRL is supported.
375 *
376 */
377unsigned int
378sas_tlr_supported(struct scsi_device *sdev)
379{
380 const int vpd_len = 32;
381 struct sas_end_device *rdev = sas_sdev_to_rdev(sdev);
382 char *buffer = kzalloc(vpd_len, GFP_KERNEL);
383 int ret = 0;
384
385 if (scsi_get_vpd_page(sdev, 0x90, buffer, vpd_len))
386 goto out;
387
388 /*
389 * Magic numbers: the VPD Protocol page (0x90)
390 * has a 4 byte header and then one entry per device port
391 * the TLR bit is at offset 8 on each port entry
392 * if we take the first port, that's at total offset 12
393 */
394 ret = buffer[12] & 0x01;
395
396 out:
397 kfree(buffer);
398 rdev->tlr_supported = ret;
399 return ret;
400
401}
402EXPORT_SYMBOL_GPL(sas_tlr_supported);
403
404/**
405 * sas_disable_tlr - setting TLR flags
406 * @sdev: scsi device struct
407 *
408 * Seting tlr_enabled flag to 0.
409 *
410 */
411void
412sas_disable_tlr(struct scsi_device *sdev)
413{
414 struct sas_end_device *rdev = sas_sdev_to_rdev(sdev);
415
416 rdev->tlr_enabled = 0;
417}
418EXPORT_SYMBOL_GPL(sas_disable_tlr);
419
420/**
421 * sas_enable_tlr - setting TLR flags
422 * @sdev: scsi device struct
423 *
424 * Seting tlr_enabled flag 1.
425 *
426 */
427void sas_enable_tlr(struct scsi_device *sdev)
428{
429 unsigned int tlr_supported = 0;
430 tlr_supported = sas_tlr_supported(sdev);
431
432 if (tlr_supported) {
433 struct sas_end_device *rdev = sas_sdev_to_rdev(sdev);
434
435 rdev->tlr_enabled = 1;
436 }
437
438 return;
439}
440EXPORT_SYMBOL_GPL(sas_enable_tlr);
441
442unsigned int sas_is_tlr_enabled(struct scsi_device *sdev)
443{
444 struct sas_end_device *rdev = sas_sdev_to_rdev(sdev);
445 return rdev->tlr_enabled;
446}
447EXPORT_SYMBOL_GPL(sas_is_tlr_enabled);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200448
449/*
James Bottomley65c92b02006-06-28 12:22:50 -0400450 * SAS Phy attributes
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200451 */
452
453#define sas_phy_show_simple(field, name, format_string, cast) \
454static ssize_t \
Tony Jonesee959b02008-02-22 00:13:36 +0100455show_sas_phy_##name(struct device *dev, \
456 struct device_attribute *attr, char *buf) \
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200457{ \
Tony Jonesee959b02008-02-22 00:13:36 +0100458 struct sas_phy *phy = transport_class_to_phy(dev); \
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200459 \
460 return snprintf(buf, 20, format_string, cast phy->field); \
461}
462
463#define sas_phy_simple_attr(field, name, format_string, type) \
464 sas_phy_show_simple(field, name, format_string, (type)) \
Tony Jonesee959b02008-02-22 00:13:36 +0100465static DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL)
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200466
467#define sas_phy_show_protocol(field, name) \
468static ssize_t \
Tony Jonesee959b02008-02-22 00:13:36 +0100469show_sas_phy_##name(struct device *dev, \
470 struct device_attribute *attr, char *buf) \
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200471{ \
Tony Jonesee959b02008-02-22 00:13:36 +0100472 struct sas_phy *phy = transport_class_to_phy(dev); \
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200473 \
474 if (!phy->field) \
475 return snprintf(buf, 20, "none\n"); \
476 return get_sas_protocol_names(phy->field, buf); \
477}
478
479#define sas_phy_protocol_attr(field, name) \
480 sas_phy_show_protocol(field, name) \
Tony Jonesee959b02008-02-22 00:13:36 +0100481static DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL)
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200482
483#define sas_phy_show_linkspeed(field) \
484static ssize_t \
Tony Jonesee959b02008-02-22 00:13:36 +0100485show_sas_phy_##field(struct device *dev, \
486 struct device_attribute *attr, char *buf) \
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200487{ \
Tony Jonesee959b02008-02-22 00:13:36 +0100488 struct sas_phy *phy = transport_class_to_phy(dev); \
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200489 \
490 return get_sas_linkspeed_names(phy->field, buf); \
491}
492
James Bottomleyd24e1ee2006-09-06 19:25:22 -0500493/* Fudge to tell if we're minimum or maximum */
494#define sas_phy_store_linkspeed(field) \
495static ssize_t \
Tony Jonesee959b02008-02-22 00:13:36 +0100496store_sas_phy_##field(struct device *dev, \
497 struct device_attribute *attr, \
498 const char *buf, size_t count) \
James Bottomleyd24e1ee2006-09-06 19:25:22 -0500499{ \
Tony Jonesee959b02008-02-22 00:13:36 +0100500 struct sas_phy *phy = transport_class_to_phy(dev); \
James Bottomleyd24e1ee2006-09-06 19:25:22 -0500501 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \
502 struct sas_internal *i = to_sas_internal(shost->transportt); \
503 u32 value; \
504 struct sas_phy_linkrates rates = {0}; \
505 int error; \
506 \
507 error = set_sas_linkspeed_names(&value, buf); \
508 if (error) \
509 return error; \
510 rates.field = value; \
511 error = i->f->set_phy_speed(phy, &rates); \
512 \
513 return error ? error : count; \
514}
515
516#define sas_phy_linkspeed_rw_attr(field) \
517 sas_phy_show_linkspeed(field) \
518 sas_phy_store_linkspeed(field) \
Tony Jonesee959b02008-02-22 00:13:36 +0100519static DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, \
James Bottomleyd24e1ee2006-09-06 19:25:22 -0500520 store_sas_phy_##field)
521
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200522#define sas_phy_linkspeed_attr(field) \
523 sas_phy_show_linkspeed(field) \
Tony Jonesee959b02008-02-22 00:13:36 +0100524static DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL)
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200525
James Bottomleyd24e1ee2006-09-06 19:25:22 -0500526
Christoph Hellwigc3ee74c2005-09-19 21:59:42 +0200527#define sas_phy_show_linkerror(field) \
528static ssize_t \
Tony Jonesee959b02008-02-22 00:13:36 +0100529show_sas_phy_##field(struct device *dev, \
530 struct device_attribute *attr, char *buf) \
Christoph Hellwigc3ee74c2005-09-19 21:59:42 +0200531{ \
Tony Jonesee959b02008-02-22 00:13:36 +0100532 struct sas_phy *phy = transport_class_to_phy(dev); \
Christoph Hellwigc3ee74c2005-09-19 21:59:42 +0200533 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \
534 struct sas_internal *i = to_sas_internal(shost->transportt); \
535 int error; \
536 \
James Bottomleydd9fbb522006-03-02 16:01:31 -0600537 error = i->f->get_linkerrors ? i->f->get_linkerrors(phy) : 0; \
Christoph Hellwigc3ee74c2005-09-19 21:59:42 +0200538 if (error) \
539 return error; \
540 return snprintf(buf, 20, "%u\n", phy->field); \
541}
542
543#define sas_phy_linkerror_attr(field) \
544 sas_phy_show_linkerror(field) \
Tony Jonesee959b02008-02-22 00:13:36 +0100545static DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL)
Christoph Hellwigc3ee74c2005-09-19 21:59:42 +0200546
547
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200548static ssize_t
Tony Jonesee959b02008-02-22 00:13:36 +0100549show_sas_device_type(struct device *dev,
550 struct device_attribute *attr, char *buf)
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200551{
Tony Jonesee959b02008-02-22 00:13:36 +0100552 struct sas_phy *phy = transport_class_to_phy(dev);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200553
554 if (!phy->identify.device_type)
555 return snprintf(buf, 20, "none\n");
556 return get_sas_device_type_names(phy->identify.device_type, buf);
557}
Tony Jonesee959b02008-02-22 00:13:36 +0100558static DEVICE_ATTR(device_type, S_IRUGO, show_sas_device_type, NULL);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200559
Tony Jonesee959b02008-02-22 00:13:36 +0100560static ssize_t do_sas_phy_enable(struct device *dev,
Darrick J. Wongacbf1672007-01-11 14:14:57 -0800561 size_t count, int enable)
562{
Tony Jonesee959b02008-02-22 00:13:36 +0100563 struct sas_phy *phy = transport_class_to_phy(dev);
Darrick J. Wongacbf1672007-01-11 14:14:57 -0800564 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
565 struct sas_internal *i = to_sas_internal(shost->transportt);
566 int error;
567
568 error = i->f->phy_enable(phy, enable);
569 if (error)
570 return error;
571 phy->enabled = enable;
572 return count;
573};
574
Tony Jonesee959b02008-02-22 00:13:36 +0100575static ssize_t
576store_sas_phy_enable(struct device *dev, struct device_attribute *attr,
577 const char *buf, size_t count)
Darrick J. Wongacbf1672007-01-11 14:14:57 -0800578{
579 if (count < 1)
580 return -EINVAL;
581
582 switch (buf[0]) {
583 case '0':
Tony Jonesee959b02008-02-22 00:13:36 +0100584 do_sas_phy_enable(dev, count, 0);
Darrick J. Wongacbf1672007-01-11 14:14:57 -0800585 break;
586 case '1':
Tony Jonesee959b02008-02-22 00:13:36 +0100587 do_sas_phy_enable(dev, count, 1);
Darrick J. Wongacbf1672007-01-11 14:14:57 -0800588 break;
589 default:
590 return -EINVAL;
591 }
592
593 return count;
594}
595
Tony Jonesee959b02008-02-22 00:13:36 +0100596static ssize_t
597show_sas_phy_enable(struct device *dev, struct device_attribute *attr,
598 char *buf)
Darrick J. Wongacbf1672007-01-11 14:14:57 -0800599{
Tony Jonesee959b02008-02-22 00:13:36 +0100600 struct sas_phy *phy = transport_class_to_phy(dev);
Darrick J. Wongacbf1672007-01-11 14:14:57 -0800601
602 return snprintf(buf, 20, "%d", phy->enabled);
603}
604
Tony Jonesee959b02008-02-22 00:13:36 +0100605static DEVICE_ATTR(enable, S_IRUGO | S_IWUSR, show_sas_phy_enable,
Darrick J. Wongacbf1672007-01-11 14:14:57 -0800606 store_sas_phy_enable);
607
Tony Jonesee959b02008-02-22 00:13:36 +0100608static ssize_t
609do_sas_phy_reset(struct device *dev, size_t count, int hard_reset)
Christoph Hellwig07ba3a92005-10-19 20:01:31 +0200610{
Tony Jonesee959b02008-02-22 00:13:36 +0100611 struct sas_phy *phy = transport_class_to_phy(dev);
Christoph Hellwig07ba3a92005-10-19 20:01:31 +0200612 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
613 struct sas_internal *i = to_sas_internal(shost->transportt);
614 int error;
615
Christoph Hellwig07ba3a92005-10-19 20:01:31 +0200616 error = i->f->phy_reset(phy, hard_reset);
617 if (error)
618 return error;
Dan Williams16d3db12012-01-30 22:53:51 -0800619 phy->enabled = 1;
Christoph Hellwig07ba3a92005-10-19 20:01:31 +0200620 return count;
621};
622
Tony Jonesee959b02008-02-22 00:13:36 +0100623static ssize_t
624store_sas_link_reset(struct device *dev, struct device_attribute *attr,
625 const char *buf, size_t count)
Christoph Hellwig07ba3a92005-10-19 20:01:31 +0200626{
Tony Jonesee959b02008-02-22 00:13:36 +0100627 return do_sas_phy_reset(dev, count, 0);
Christoph Hellwig07ba3a92005-10-19 20:01:31 +0200628}
Tony Jonesee959b02008-02-22 00:13:36 +0100629static DEVICE_ATTR(link_reset, S_IWUSR, NULL, store_sas_link_reset);
Christoph Hellwig07ba3a92005-10-19 20:01:31 +0200630
Tony Jonesee959b02008-02-22 00:13:36 +0100631static ssize_t
632store_sas_hard_reset(struct device *dev, struct device_attribute *attr,
633 const char *buf, size_t count)
Christoph Hellwig07ba3a92005-10-19 20:01:31 +0200634{
Tony Jonesee959b02008-02-22 00:13:36 +0100635 return do_sas_phy_reset(dev, count, 1);
Christoph Hellwig07ba3a92005-10-19 20:01:31 +0200636}
Tony Jonesee959b02008-02-22 00:13:36 +0100637static DEVICE_ATTR(hard_reset, S_IWUSR, NULL, store_sas_hard_reset);
Christoph Hellwig07ba3a92005-10-19 20:01:31 +0200638
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200639sas_phy_protocol_attr(identify.initiator_port_protocols,
640 initiator_port_protocols);
641sas_phy_protocol_attr(identify.target_port_protocols,
642 target_port_protocols);
643sas_phy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n",
644 unsigned long long);
645sas_phy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8);
James Bottomleyc9fefeb2006-07-02 11:10:18 -0500646//sas_phy_simple_attr(port_identifier, port_identifier, "%d\n", int);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200647sas_phy_linkspeed_attr(negotiated_linkrate);
648sas_phy_linkspeed_attr(minimum_linkrate_hw);
James Bottomleyd24e1ee2006-09-06 19:25:22 -0500649sas_phy_linkspeed_rw_attr(minimum_linkrate);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200650sas_phy_linkspeed_attr(maximum_linkrate_hw);
James Bottomleyd24e1ee2006-09-06 19:25:22 -0500651sas_phy_linkspeed_rw_attr(maximum_linkrate);
Christoph Hellwigc3ee74c2005-09-19 21:59:42 +0200652sas_phy_linkerror_attr(invalid_dword_count);
653sas_phy_linkerror_attr(running_disparity_error_count);
654sas_phy_linkerror_attr(loss_of_dword_sync_count);
655sas_phy_linkerror_attr(phy_reset_problem_count);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200656
Dan Williams0b3e09d2011-12-20 01:03:48 -0800657static int sas_phy_setup(struct transport_container *tc, struct device *dev,
658 struct device *cdev)
659{
660 struct sas_phy *phy = dev_to_phy(dev);
661 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
662 struct sas_internal *i = to_sas_internal(shost->transportt);
663
664 if (i->f->phy_setup)
665 i->f->phy_setup(phy);
666
667 return 0;
668}
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200669
670static DECLARE_TRANSPORT_CLASS(sas_phy_class,
Dan Williams0b3e09d2011-12-20 01:03:48 -0800671 "sas_phy", sas_phy_setup, NULL, NULL);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200672
673static int sas_phy_match(struct attribute_container *cont, struct device *dev)
674{
675 struct Scsi_Host *shost;
676 struct sas_internal *i;
677
678 if (!scsi_is_sas_phy(dev))
679 return 0;
680 shost = dev_to_shost(dev->parent);
681
682 if (!shost->transportt)
683 return 0;
684 if (shost->transportt->host_attrs.ac.class !=
685 &sas_host_class.class)
686 return 0;
687
688 i = to_sas_internal(shost->transportt);
689 return &i->phy_attr_cont.ac == cont;
690}
691
692static void sas_phy_release(struct device *dev)
693{
694 struct sas_phy *phy = dev_to_phy(dev);
Dan Williams0b3e09d2011-12-20 01:03:48 -0800695 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
696 struct sas_internal *i = to_sas_internal(shost->transportt);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200697
Dan Williams0b3e09d2011-12-20 01:03:48 -0800698 if (i->f->phy_release)
699 i->f->phy_release(phy);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200700 put_device(dev->parent);
701 kfree(phy);
702}
703
704/**
Rob Landleyeb448202007-11-03 13:30:39 -0500705 * sas_phy_alloc - allocates and initialize a SAS PHY structure
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200706 * @parent: Parent device
Moore, Ericd99ca412006-01-26 16:20:02 -0700707 * @number: Phy index
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200708 *
709 * Allocates an SAS PHY structure. It will be added in the device tree
710 * below the device specified by @parent, which has to be either a Scsi_Host
711 * or sas_rphy.
712 *
713 * Returns:
714 * SAS PHY allocated or %NULL if the allocation failed.
715 */
716struct sas_phy *sas_phy_alloc(struct device *parent, int number)
717{
718 struct Scsi_Host *shost = dev_to_shost(parent);
719 struct sas_phy *phy;
720
Jes Sorensen24669f752006-01-16 10:31:18 -0500721 phy = kzalloc(sizeof(*phy), GFP_KERNEL);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200722 if (!phy)
723 return NULL;
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200724
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200725 phy->number = number;
Darrick J. Wongacbf1672007-01-11 14:14:57 -0800726 phy->enabled = 1;
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200727
728 device_initialize(&phy->dev);
729 phy->dev.parent = get_device(parent);
730 phy->dev.release = sas_phy_release;
James Bottomley65c92b02006-06-28 12:22:50 -0400731 INIT_LIST_HEAD(&phy->port_siblings);
James Bottomley79cb1812006-03-13 13:50:04 -0600732 if (scsi_is_sas_expander_device(parent)) {
733 struct sas_rphy *rphy = dev_to_rphy(parent);
Kay Sievers71610f52008-12-03 22:41:36 +0100734 dev_set_name(&phy->dev, "phy-%d:%d:%d", shost->host_no,
James Bottomley79cb1812006-03-13 13:50:04 -0600735 rphy->scsi_target_id, number);
736 } else
Kay Sievers71610f52008-12-03 22:41:36 +0100737 dev_set_name(&phy->dev, "phy-%d:%d", shost->host_no, number);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200738
739 transport_setup_device(&phy->dev);
740
741 return phy;
742}
743EXPORT_SYMBOL(sas_phy_alloc);
744
745/**
Rob Landleyeb448202007-11-03 13:30:39 -0500746 * sas_phy_add - add a SAS PHY to the device hierarchy
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200747 * @phy: The PHY to be added
748 *
749 * Publishes a SAS PHY to the rest of the system.
750 */
751int sas_phy_add(struct sas_phy *phy)
752{
753 int error;
754
755 error = device_add(&phy->dev);
756 if (!error) {
757 transport_add_device(&phy->dev);
758 transport_configure_device(&phy->dev);
759 }
760
761 return error;
762}
763EXPORT_SYMBOL(sas_phy_add);
764
765/**
Rob Landleyeb448202007-11-03 13:30:39 -0500766 * sas_phy_free - free a SAS PHY
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200767 * @phy: SAS PHY to free
768 *
769 * Frees the specified SAS PHY.
770 *
771 * Note:
772 * This function must only be called on a PHY that has not
André Goddard Rosaaf901ca2009-11-14 13:09:05 -0200773 * successfully been added using sas_phy_add().
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200774 */
775void sas_phy_free(struct sas_phy *phy)
776{
777 transport_destroy_device(&phy->dev);
Mike Anderson92aab642006-03-27 09:37:28 -0800778 put_device(&phy->dev);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200779}
780EXPORT_SYMBOL(sas_phy_free);
781
782/**
Rob Landleyeb448202007-11-03 13:30:39 -0500783 * sas_phy_delete - remove SAS PHY
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200784 * @phy: SAS PHY to remove
785 *
786 * Removes the specified SAS PHY. If the SAS PHY has an
787 * associated remote PHY it is removed before.
788 */
789void
790sas_phy_delete(struct sas_phy *phy)
791{
792 struct device *dev = &phy->dev;
793
James Bottomley65c92b02006-06-28 12:22:50 -0400794 /* this happens if the phy is still part of a port when deleted */
795 BUG_ON(!list_empty(&phy->port_siblings));
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200796
797 transport_remove_device(dev);
798 device_del(dev);
799 transport_destroy_device(dev);
Mike Anderson92aab642006-03-27 09:37:28 -0800800 put_device(dev);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200801}
802EXPORT_SYMBOL(sas_phy_delete);
803
804/**
Rob Landleyeb448202007-11-03 13:30:39 -0500805 * scsi_is_sas_phy - check if a struct device represents a SAS PHY
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200806 * @dev: device to check
807 *
808 * Returns:
809 * %1 if the device represents a SAS PHY, %0 else
810 */
811int scsi_is_sas_phy(const struct device *dev)
812{
813 return dev->release == sas_phy_release;
814}
815EXPORT_SYMBOL(scsi_is_sas_phy);
816
817/*
James Bottomley65c92b02006-06-28 12:22:50 -0400818 * SAS Port attributes
819 */
820#define sas_port_show_simple(field, name, format_string, cast) \
821static ssize_t \
Tony Jonesee959b02008-02-22 00:13:36 +0100822show_sas_port_##name(struct device *dev, \
823 struct device_attribute *attr, char *buf) \
James Bottomley65c92b02006-06-28 12:22:50 -0400824{ \
Tony Jonesee959b02008-02-22 00:13:36 +0100825 struct sas_port *port = transport_class_to_sas_port(dev); \
James Bottomley65c92b02006-06-28 12:22:50 -0400826 \
827 return snprintf(buf, 20, format_string, cast port->field); \
828}
829
830#define sas_port_simple_attr(field, name, format_string, type) \
831 sas_port_show_simple(field, name, format_string, (type)) \
Tony Jonesee959b02008-02-22 00:13:36 +0100832static DEVICE_ATTR(name, S_IRUGO, show_sas_port_##name, NULL)
James Bottomley65c92b02006-06-28 12:22:50 -0400833
834sas_port_simple_attr(num_phys, num_phys, "%d\n", int);
835
836static DECLARE_TRANSPORT_CLASS(sas_port_class,
837 "sas_port", NULL, NULL, NULL);
838
839static int sas_port_match(struct attribute_container *cont, struct device *dev)
840{
841 struct Scsi_Host *shost;
842 struct sas_internal *i;
843
844 if (!scsi_is_sas_port(dev))
845 return 0;
846 shost = dev_to_shost(dev->parent);
847
848 if (!shost->transportt)
849 return 0;
850 if (shost->transportt->host_attrs.ac.class !=
851 &sas_host_class.class)
852 return 0;
853
854 i = to_sas_internal(shost->transportt);
855 return &i->port_attr_cont.ac == cont;
856}
857
858
859static void sas_port_release(struct device *dev)
860{
861 struct sas_port *port = dev_to_sas_port(dev);
862
863 BUG_ON(!list_empty(&port->phy_list));
864
865 put_device(dev->parent);
866 kfree(port);
867}
868
869static void sas_port_create_link(struct sas_port *port,
870 struct sas_phy *phy)
871{
Darrick J. Wong21434962007-01-26 14:08:46 -0800872 int res;
873
874 res = sysfs_create_link(&port->dev.kobj, &phy->dev.kobj,
Kay Sievers71610f52008-12-03 22:41:36 +0100875 dev_name(&phy->dev));
Darrick J. Wong21434962007-01-26 14:08:46 -0800876 if (res)
877 goto err;
878 res = sysfs_create_link(&phy->dev.kobj, &port->dev.kobj, "port");
879 if (res)
880 goto err;
881 return;
882err:
883 printk(KERN_ERR "%s: Cannot create port links, err=%d\n",
Harvey Harrisoncadbd4a2008-07-03 23:47:27 -0700884 __func__, res);
James Bottomley65c92b02006-06-28 12:22:50 -0400885}
886
887static void sas_port_delete_link(struct sas_port *port,
888 struct sas_phy *phy)
889{
Kay Sievers71610f52008-12-03 22:41:36 +0100890 sysfs_remove_link(&port->dev.kobj, dev_name(&phy->dev));
James Bottomley65c92b02006-06-28 12:22:50 -0400891 sysfs_remove_link(&phy->dev.kobj, "port");
892}
893
894/** sas_port_alloc - allocate and initialize a SAS port structure
895 *
896 * @parent: parent device
897 * @port_id: port number
898 *
899 * Allocates a SAS port structure. It will be added to the device tree
900 * below the device specified by @parent which must be either a Scsi_Host
901 * or a sas_expander_device.
902 *
903 * Returns %NULL on error
904 */
905struct sas_port *sas_port_alloc(struct device *parent, int port_id)
906{
907 struct Scsi_Host *shost = dev_to_shost(parent);
908 struct sas_port *port;
909
910 port = kzalloc(sizeof(*port), GFP_KERNEL);
911 if (!port)
912 return NULL;
913
914 port->port_identifier = port_id;
915
916 device_initialize(&port->dev);
917
918 port->dev.parent = get_device(parent);
919 port->dev.release = sas_port_release;
920
921 mutex_init(&port->phy_list_mutex);
922 INIT_LIST_HEAD(&port->phy_list);
923
924 if (scsi_is_sas_expander_device(parent)) {
925 struct sas_rphy *rphy = dev_to_rphy(parent);
Kay Sievers71610f52008-12-03 22:41:36 +0100926 dev_set_name(&port->dev, "port-%d:%d:%d", shost->host_no,
927 rphy->scsi_target_id, port->port_identifier);
James Bottomley65c92b02006-06-28 12:22:50 -0400928 } else
Kay Sievers71610f52008-12-03 22:41:36 +0100929 dev_set_name(&port->dev, "port-%d:%d", shost->host_no,
930 port->port_identifier);
James Bottomley65c92b02006-06-28 12:22:50 -0400931
932 transport_setup_device(&port->dev);
933
934 return port;
935}
936EXPORT_SYMBOL(sas_port_alloc);
937
James Bottomleyc9fefeb2006-07-02 11:10:18 -0500938/** sas_port_alloc_num - allocate and initialize a SAS port structure
939 *
940 * @parent: parent device
941 *
942 * Allocates a SAS port structure and a number to go with it. This
943 * interface is really for adapters where the port number has no
944 * meansing, so the sas class should manage them. It will be added to
945 * the device tree below the device specified by @parent which must be
946 * either a Scsi_Host or a sas_expander_device.
947 *
948 * Returns %NULL on error
949 */
950struct sas_port *sas_port_alloc_num(struct device *parent)
951{
952 int index;
953 struct Scsi_Host *shost = dev_to_shost(parent);
954 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
955
956 /* FIXME: use idr for this eventually */
957 mutex_lock(&sas_host->lock);
958 if (scsi_is_sas_expander_device(parent)) {
959 struct sas_rphy *rphy = dev_to_rphy(parent);
960 struct sas_expander_device *exp = rphy_to_expander_device(rphy);
961
962 index = exp->next_port_id++;
963 } else
964 index = sas_host->next_port_id++;
965 mutex_unlock(&sas_host->lock);
966 return sas_port_alloc(parent, index);
967}
968EXPORT_SYMBOL(sas_port_alloc_num);
969
James Bottomley65c92b02006-06-28 12:22:50 -0400970/**
971 * sas_port_add - add a SAS port to the device hierarchy
James Bottomley65c92b02006-06-28 12:22:50 -0400972 * @port: port to be added
973 *
974 * publishes a port to the rest of the system
975 */
976int sas_port_add(struct sas_port *port)
977{
978 int error;
979
980 /* No phys should be added until this is made visible */
981 BUG_ON(!list_empty(&port->phy_list));
982
983 error = device_add(&port->dev);
984
985 if (error)
986 return error;
987
988 transport_add_device(&port->dev);
989 transport_configure_device(&port->dev);
990
991 return 0;
992}
993EXPORT_SYMBOL(sas_port_add);
994
995/**
Rob Landleyeb448202007-11-03 13:30:39 -0500996 * sas_port_free - free a SAS PORT
James Bottomley65c92b02006-06-28 12:22:50 -0400997 * @port: SAS PORT to free
998 *
999 * Frees the specified SAS PORT.
1000 *
1001 * Note:
1002 * This function must only be called on a PORT that has not
André Goddard Rosaaf901ca2009-11-14 13:09:05 -02001003 * successfully been added using sas_port_add().
James Bottomley65c92b02006-06-28 12:22:50 -04001004 */
1005void sas_port_free(struct sas_port *port)
1006{
1007 transport_destroy_device(&port->dev);
1008 put_device(&port->dev);
1009}
1010EXPORT_SYMBOL(sas_port_free);
1011
1012/**
Rob Landleyeb448202007-11-03 13:30:39 -05001013 * sas_port_delete - remove SAS PORT
James Bottomley65c92b02006-06-28 12:22:50 -04001014 * @port: SAS PORT to remove
1015 *
1016 * Removes the specified SAS PORT. If the SAS PORT has an
1017 * associated phys, unlink them from the port as well.
1018 */
1019void sas_port_delete(struct sas_port *port)
1020{
1021 struct device *dev = &port->dev;
1022 struct sas_phy *phy, *tmp_phy;
1023
1024 if (port->rphy) {
1025 sas_rphy_delete(port->rphy);
1026 port->rphy = NULL;
1027 }
1028
1029 mutex_lock(&port->phy_list_mutex);
1030 list_for_each_entry_safe(phy, tmp_phy, &port->phy_list,
1031 port_siblings) {
1032 sas_port_delete_link(port, phy);
1033 list_del_init(&phy->port_siblings);
1034 }
1035 mutex_unlock(&port->phy_list_mutex);
1036
James Bottomleya0e1b6e2006-07-09 12:38:19 -05001037 if (port->is_backlink) {
1038 struct device *parent = port->dev.parent;
1039
Kay Sievers71610f52008-12-03 22:41:36 +01001040 sysfs_remove_link(&port->dev.kobj, dev_name(parent));
James Bottomleya0e1b6e2006-07-09 12:38:19 -05001041 port->is_backlink = 0;
1042 }
1043
James Bottomley65c92b02006-06-28 12:22:50 -04001044 transport_remove_device(dev);
1045 device_del(dev);
1046 transport_destroy_device(dev);
1047 put_device(dev);
1048}
1049EXPORT_SYMBOL(sas_port_delete);
1050
1051/**
Rob Landleyeb448202007-11-03 13:30:39 -05001052 * scsi_is_sas_port - check if a struct device represents a SAS port
James Bottomley65c92b02006-06-28 12:22:50 -04001053 * @dev: device to check
1054 *
1055 * Returns:
1056 * %1 if the device represents a SAS Port, %0 else
1057 */
1058int scsi_is_sas_port(const struct device *dev)
1059{
1060 return dev->release == sas_port_release;
1061}
1062EXPORT_SYMBOL(scsi_is_sas_port);
1063
1064/**
Dan Williamsf41a0c42011-12-21 21:33:17 -08001065 * sas_port_get_phy - try to take a reference on a port member
1066 * @port: port to check
1067 */
1068struct sas_phy *sas_port_get_phy(struct sas_port *port)
1069{
1070 struct sas_phy *phy;
1071
1072 mutex_lock(&port->phy_list_mutex);
1073 if (list_empty(&port->phy_list))
1074 phy = NULL;
1075 else {
1076 struct list_head *ent = port->phy_list.next;
1077
1078 phy = list_entry(ent, typeof(*phy), port_siblings);
1079 get_device(&phy->dev);
1080 }
1081 mutex_unlock(&port->phy_list_mutex);
1082
1083 return phy;
1084}
1085EXPORT_SYMBOL(sas_port_get_phy);
1086
1087/**
James Bottomley65c92b02006-06-28 12:22:50 -04001088 * sas_port_add_phy - add another phy to a port to form a wide port
1089 * @port: port to add the phy to
1090 * @phy: phy to add
1091 *
1092 * When a port is initially created, it is empty (has no phys). All
1093 * ports must have at least one phy to operated, and all wide ports
1094 * must have at least two. The current code makes no difference
1095 * between ports and wide ports, but the only object that can be
1096 * connected to a remote device is a port, so ports must be formed on
1097 * all devices with phys if they're connected to anything.
1098 */
1099void sas_port_add_phy(struct sas_port *port, struct sas_phy *phy)
1100{
1101 mutex_lock(&port->phy_list_mutex);
1102 if (unlikely(!list_empty(&phy->port_siblings))) {
1103 /* make sure we're already on this port */
1104 struct sas_phy *tmp;
1105
1106 list_for_each_entry(tmp, &port->phy_list, port_siblings)
1107 if (tmp == phy)
1108 break;
1109 /* If this trips, you added a phy that was already
1110 * part of a different port */
1111 if (unlikely(tmp != phy)) {
Kay Sievers71610f52008-12-03 22:41:36 +01001112 dev_printk(KERN_ERR, &port->dev, "trying to add phy %s fails: it's already part of another port\n",
1113 dev_name(&phy->dev));
James Bottomley65c92b02006-06-28 12:22:50 -04001114 BUG();
1115 }
1116 } else {
1117 sas_port_create_link(port, phy);
1118 list_add_tail(&phy->port_siblings, &port->phy_list);
1119 port->num_phys++;
1120 }
1121 mutex_unlock(&port->phy_list_mutex);
1122}
1123EXPORT_SYMBOL(sas_port_add_phy);
1124
1125/**
1126 * sas_port_delete_phy - remove a phy from a port or wide port
1127 * @port: port to remove the phy from
1128 * @phy: phy to remove
1129 *
1130 * This operation is used for tearing down ports again. It must be
1131 * done to every port or wide port before calling sas_port_delete.
1132 */
1133void sas_port_delete_phy(struct sas_port *port, struct sas_phy *phy)
1134{
1135 mutex_lock(&port->phy_list_mutex);
1136 sas_port_delete_link(port, phy);
1137 list_del_init(&phy->port_siblings);
1138 port->num_phys--;
1139 mutex_unlock(&port->phy_list_mutex);
1140}
1141EXPORT_SYMBOL(sas_port_delete_phy);
1142
James Bottomleya0e1b6e2006-07-09 12:38:19 -05001143void sas_port_mark_backlink(struct sas_port *port)
1144{
Darrick J. Wong21434962007-01-26 14:08:46 -08001145 int res;
James Bottomleya0e1b6e2006-07-09 12:38:19 -05001146 struct device *parent = port->dev.parent->parent->parent;
1147
1148 if (port->is_backlink)
1149 return;
1150 port->is_backlink = 1;
Darrick J. Wong21434962007-01-26 14:08:46 -08001151 res = sysfs_create_link(&port->dev.kobj, &parent->kobj,
Kay Sievers71610f52008-12-03 22:41:36 +01001152 dev_name(parent));
Darrick J. Wong21434962007-01-26 14:08:46 -08001153 if (res)
1154 goto err;
1155 return;
1156err:
1157 printk(KERN_ERR "%s: Cannot create port backlink, err=%d\n",
Harvey Harrisoncadbd4a2008-07-03 23:47:27 -07001158 __func__, res);
James Bottomleya0e1b6e2006-07-09 12:38:19 -05001159
1160}
1161EXPORT_SYMBOL(sas_port_mark_backlink);
1162
James Bottomley65c92b02006-06-28 12:22:50 -04001163/*
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001164 * SAS remote PHY attributes.
1165 */
1166
1167#define sas_rphy_show_simple(field, name, format_string, cast) \
1168static ssize_t \
Tony Jonesee959b02008-02-22 00:13:36 +01001169show_sas_rphy_##name(struct device *dev, \
1170 struct device_attribute *attr, char *buf) \
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001171{ \
Tony Jonesee959b02008-02-22 00:13:36 +01001172 struct sas_rphy *rphy = transport_class_to_rphy(dev); \
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001173 \
1174 return snprintf(buf, 20, format_string, cast rphy->field); \
1175}
1176
1177#define sas_rphy_simple_attr(field, name, format_string, type) \
1178 sas_rphy_show_simple(field, name, format_string, (type)) \
Tony Jonesee959b02008-02-22 00:13:36 +01001179static SAS_DEVICE_ATTR(rphy, name, S_IRUGO, \
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001180 show_sas_rphy_##name, NULL)
1181
1182#define sas_rphy_show_protocol(field, name) \
1183static ssize_t \
Tony Jonesee959b02008-02-22 00:13:36 +01001184show_sas_rphy_##name(struct device *dev, \
1185 struct device_attribute *attr, char *buf) \
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001186{ \
Tony Jonesee959b02008-02-22 00:13:36 +01001187 struct sas_rphy *rphy = transport_class_to_rphy(dev); \
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001188 \
1189 if (!rphy->field) \
1190 return snprintf(buf, 20, "none\n"); \
1191 return get_sas_protocol_names(rphy->field, buf); \
1192}
1193
1194#define sas_rphy_protocol_attr(field, name) \
1195 sas_rphy_show_protocol(field, name) \
Tony Jonesee959b02008-02-22 00:13:36 +01001196static SAS_DEVICE_ATTR(rphy, name, S_IRUGO, \
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001197 show_sas_rphy_##name, NULL)
1198
1199static ssize_t
Tony Jonesee959b02008-02-22 00:13:36 +01001200show_sas_rphy_device_type(struct device *dev,
1201 struct device_attribute *attr, char *buf)
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001202{
Tony Jonesee959b02008-02-22 00:13:36 +01001203 struct sas_rphy *rphy = transport_class_to_rphy(dev);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001204
1205 if (!rphy->identify.device_type)
1206 return snprintf(buf, 20, "none\n");
1207 return get_sas_device_type_names(
1208 rphy->identify.device_type, buf);
1209}
1210
Tony Jonesee959b02008-02-22 00:13:36 +01001211static SAS_DEVICE_ATTR(rphy, device_type, S_IRUGO,
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001212 show_sas_rphy_device_type, NULL);
1213
Christoph Hellwiga0125642006-02-16 13:31:47 +01001214static ssize_t
Tony Jonesee959b02008-02-22 00:13:36 +01001215show_sas_rphy_enclosure_identifier(struct device *dev,
1216 struct device_attribute *attr, char *buf)
Christoph Hellwiga0125642006-02-16 13:31:47 +01001217{
Tony Jonesee959b02008-02-22 00:13:36 +01001218 struct sas_rphy *rphy = transport_class_to_rphy(dev);
Christoph Hellwiga0125642006-02-16 13:31:47 +01001219 struct sas_phy *phy = dev_to_phy(rphy->dev.parent);
1220 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
1221 struct sas_internal *i = to_sas_internal(shost->transportt);
1222 u64 identifier;
1223 int error;
1224
Christoph Hellwiga0125642006-02-16 13:31:47 +01001225 error = i->f->get_enclosure_identifier(rphy, &identifier);
1226 if (error)
1227 return error;
1228 return sprintf(buf, "0x%llx\n", (unsigned long long)identifier);
1229}
1230
Tony Jonesee959b02008-02-22 00:13:36 +01001231static SAS_DEVICE_ATTR(rphy, enclosure_identifier, S_IRUGO,
Christoph Hellwiga0125642006-02-16 13:31:47 +01001232 show_sas_rphy_enclosure_identifier, NULL);
1233
1234static ssize_t
Tony Jonesee959b02008-02-22 00:13:36 +01001235show_sas_rphy_bay_identifier(struct device *dev,
1236 struct device_attribute *attr, char *buf)
Christoph Hellwiga0125642006-02-16 13:31:47 +01001237{
Tony Jonesee959b02008-02-22 00:13:36 +01001238 struct sas_rphy *rphy = transport_class_to_rphy(dev);
Christoph Hellwiga0125642006-02-16 13:31:47 +01001239 struct sas_phy *phy = dev_to_phy(rphy->dev.parent);
1240 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
1241 struct sas_internal *i = to_sas_internal(shost->transportt);
1242 int val;
1243
Christoph Hellwiga0125642006-02-16 13:31:47 +01001244 val = i->f->get_bay_identifier(rphy);
1245 if (val < 0)
1246 return val;
1247 return sprintf(buf, "%d\n", val);
1248}
1249
Tony Jonesee959b02008-02-22 00:13:36 +01001250static SAS_DEVICE_ATTR(rphy, bay_identifier, S_IRUGO,
Christoph Hellwiga0125642006-02-16 13:31:47 +01001251 show_sas_rphy_bay_identifier, NULL);
1252
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001253sas_rphy_protocol_attr(identify.initiator_port_protocols,
1254 initiator_port_protocols);
1255sas_rphy_protocol_attr(identify.target_port_protocols, target_port_protocols);
1256sas_rphy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n",
1257 unsigned long long);
1258sas_rphy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8);
1259
James Bottomley42ab0362006-03-04 09:10:18 -06001260/* only need 8 bytes of data plus header (4 or 8) */
1261#define BUF_SIZE 64
1262
1263int sas_read_port_mode_page(struct scsi_device *sdev)
1264{
1265 char *buffer = kzalloc(BUF_SIZE, GFP_KERNEL), *msdata;
James Bottomley0f880092010-01-18 10:14:51 -06001266 struct sas_end_device *rdev = sas_sdev_to_rdev(sdev);
James Bottomley42ab0362006-03-04 09:10:18 -06001267 struct scsi_mode_data mode_data;
1268 int res, error;
1269
James Bottomley42ab0362006-03-04 09:10:18 -06001270 if (!buffer)
1271 return -ENOMEM;
1272
1273 res = scsi_mode_sense(sdev, 1, 0x19, buffer, BUF_SIZE, 30*HZ, 3,
1274 &mode_data, NULL);
1275
1276 error = -EINVAL;
1277 if (!scsi_status_is_good(res))
1278 goto out;
1279
1280 msdata = buffer + mode_data.header_length +
1281 mode_data.block_descriptor_length;
1282
1283 if (msdata - buffer > BUF_SIZE - 8)
1284 goto out;
1285
1286 error = 0;
1287
1288 rdev->ready_led_meaning = msdata[2] & 0x10 ? 1 : 0;
1289 rdev->I_T_nexus_loss_timeout = (msdata[4] << 8) + msdata[5];
1290 rdev->initiator_response_timeout = (msdata[6] << 8) + msdata[7];
1291
1292 out:
1293 kfree(buffer);
1294 return error;
1295}
1296EXPORT_SYMBOL(sas_read_port_mode_page);
1297
James Bottomley79cb1812006-03-13 13:50:04 -06001298static DECLARE_TRANSPORT_CLASS(sas_end_dev_class,
1299 "sas_end_device", NULL, NULL, NULL);
1300
James Bottomley42ab0362006-03-04 09:10:18 -06001301#define sas_end_dev_show_simple(field, name, format_string, cast) \
1302static ssize_t \
Tony Jonesee959b02008-02-22 00:13:36 +01001303show_sas_end_dev_##name(struct device *dev, \
1304 struct device_attribute *attr, char *buf) \
James Bottomley42ab0362006-03-04 09:10:18 -06001305{ \
Tony Jonesee959b02008-02-22 00:13:36 +01001306 struct sas_rphy *rphy = transport_class_to_rphy(dev); \
James Bottomley42ab0362006-03-04 09:10:18 -06001307 struct sas_end_device *rdev = rphy_to_end_device(rphy); \
1308 \
1309 return snprintf(buf, 20, format_string, cast rdev->field); \
1310}
1311
1312#define sas_end_dev_simple_attr(field, name, format_string, type) \
1313 sas_end_dev_show_simple(field, name, format_string, (type)) \
Tony Jonesee959b02008-02-22 00:13:36 +01001314static SAS_DEVICE_ATTR(end_dev, name, S_IRUGO, \
James Bottomley42ab0362006-03-04 09:10:18 -06001315 show_sas_end_dev_##name, NULL)
1316
1317sas_end_dev_simple_attr(ready_led_meaning, ready_led_meaning, "%d\n", int);
1318sas_end_dev_simple_attr(I_T_nexus_loss_timeout, I_T_nexus_loss_timeout,
1319 "%d\n", int);
1320sas_end_dev_simple_attr(initiator_response_timeout, initiator_response_timeout,
1321 "%d\n", int);
James Bottomley0f880092010-01-18 10:14:51 -06001322sas_end_dev_simple_attr(tlr_supported, tlr_supported,
1323 "%d\n", int);
1324sas_end_dev_simple_attr(tlr_enabled, tlr_enabled,
1325 "%d\n", int);
James Bottomley42ab0362006-03-04 09:10:18 -06001326
James Bottomley79cb1812006-03-13 13:50:04 -06001327static DECLARE_TRANSPORT_CLASS(sas_expander_class,
1328 "sas_expander", NULL, NULL, NULL);
1329
1330#define sas_expander_show_simple(field, name, format_string, cast) \
1331static ssize_t \
Tony Jonesee959b02008-02-22 00:13:36 +01001332show_sas_expander_##name(struct device *dev, \
1333 struct device_attribute *attr, char *buf) \
James Bottomley79cb1812006-03-13 13:50:04 -06001334{ \
Tony Jonesee959b02008-02-22 00:13:36 +01001335 struct sas_rphy *rphy = transport_class_to_rphy(dev); \
James Bottomley79cb1812006-03-13 13:50:04 -06001336 struct sas_expander_device *edev = rphy_to_expander_device(rphy); \
1337 \
1338 return snprintf(buf, 20, format_string, cast edev->field); \
1339}
1340
1341#define sas_expander_simple_attr(field, name, format_string, type) \
1342 sas_expander_show_simple(field, name, format_string, (type)) \
Tony Jonesee959b02008-02-22 00:13:36 +01001343static SAS_DEVICE_ATTR(expander, name, S_IRUGO, \
James Bottomley79cb1812006-03-13 13:50:04 -06001344 show_sas_expander_##name, NULL)
1345
1346sas_expander_simple_attr(vendor_id, vendor_id, "%s\n", char *);
1347sas_expander_simple_attr(product_id, product_id, "%s\n", char *);
1348sas_expander_simple_attr(product_rev, product_rev, "%s\n", char *);
1349sas_expander_simple_attr(component_vendor_id, component_vendor_id,
1350 "%s\n", char *);
1351sas_expander_simple_attr(component_id, component_id, "%u\n", unsigned int);
1352sas_expander_simple_attr(component_revision_id, component_revision_id, "%u\n",
1353 unsigned int);
1354sas_expander_simple_attr(level, level, "%d\n", int);
James Bottomley42ab0362006-03-04 09:10:18 -06001355
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001356static DECLARE_TRANSPORT_CLASS(sas_rphy_class,
James Bottomley2f8600d2006-03-18 15:00:50 -06001357 "sas_device", NULL, NULL, NULL);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001358
1359static int sas_rphy_match(struct attribute_container *cont, struct device *dev)
1360{
1361 struct Scsi_Host *shost;
1362 struct sas_internal *i;
1363
1364 if (!scsi_is_sas_rphy(dev))
1365 return 0;
1366 shost = dev_to_shost(dev->parent->parent);
1367
1368 if (!shost->transportt)
1369 return 0;
1370 if (shost->transportt->host_attrs.ac.class !=
1371 &sas_host_class.class)
1372 return 0;
1373
1374 i = to_sas_internal(shost->transportt);
1375 return &i->rphy_attr_cont.ac == cont;
1376}
1377
James Bottomley42ab0362006-03-04 09:10:18 -06001378static int sas_end_dev_match(struct attribute_container *cont,
1379 struct device *dev)
1380{
1381 struct Scsi_Host *shost;
1382 struct sas_internal *i;
1383 struct sas_rphy *rphy;
1384
1385 if (!scsi_is_sas_rphy(dev))
1386 return 0;
1387 shost = dev_to_shost(dev->parent->parent);
1388 rphy = dev_to_rphy(dev);
1389
1390 if (!shost->transportt)
1391 return 0;
1392 if (shost->transportt->host_attrs.ac.class !=
1393 &sas_host_class.class)
1394 return 0;
1395
1396 i = to_sas_internal(shost->transportt);
1397 return &i->end_dev_attr_cont.ac == cont &&
James Bottomley2f8600d2006-03-18 15:00:50 -06001398 rphy->identify.device_type == SAS_END_DEVICE;
James Bottomley42ab0362006-03-04 09:10:18 -06001399}
1400
James Bottomley79cb1812006-03-13 13:50:04 -06001401static int sas_expander_match(struct attribute_container *cont,
1402 struct device *dev)
1403{
1404 struct Scsi_Host *shost;
1405 struct sas_internal *i;
1406 struct sas_rphy *rphy;
1407
1408 if (!scsi_is_sas_rphy(dev))
1409 return 0;
1410 shost = dev_to_shost(dev->parent->parent);
1411 rphy = dev_to_rphy(dev);
1412
1413 if (!shost->transportt)
1414 return 0;
1415 if (shost->transportt->host_attrs.ac.class !=
1416 &sas_host_class.class)
1417 return 0;
1418
1419 i = to_sas_internal(shost->transportt);
1420 return &i->expander_attr_cont.ac == cont &&
1421 (rphy->identify.device_type == SAS_EDGE_EXPANDER_DEVICE ||
James Bottomley2f8600d2006-03-18 15:00:50 -06001422 rphy->identify.device_type == SAS_FANOUT_EXPANDER_DEVICE);
James Bottomley79cb1812006-03-13 13:50:04 -06001423}
1424
James Bottomley2f8600d2006-03-18 15:00:50 -06001425static void sas_expander_release(struct device *dev)
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001426{
1427 struct sas_rphy *rphy = dev_to_rphy(dev);
James Bottomley2f8600d2006-03-18 15:00:50 -06001428 struct sas_expander_device *edev = rphy_to_expander_device(rphy);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001429
FUJITA Tomonori93c20a52008-04-19 00:43:15 +09001430 if (rphy->q)
1431 blk_cleanup_queue(rphy->q);
1432
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001433 put_device(dev->parent);
James Bottomley2f8600d2006-03-18 15:00:50 -06001434 kfree(edev);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001435}
1436
James Bottomley2f8600d2006-03-18 15:00:50 -06001437static void sas_end_device_release(struct device *dev)
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001438{
James Bottomley2f8600d2006-03-18 15:00:50 -06001439 struct sas_rphy *rphy = dev_to_rphy(dev);
1440 struct sas_end_device *edev = rphy_to_end_device(rphy);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001441
FUJITA Tomonori93c20a52008-04-19 00:43:15 +09001442 if (rphy->q)
1443 blk_cleanup_queue(rphy->q);
1444
James Bottomley2f8600d2006-03-18 15:00:50 -06001445 put_device(dev->parent);
1446 kfree(edev);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001447}
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001448
1449/**
James Bottomleyc5943d32006-06-12 09:09:18 -05001450 * sas_rphy_initialize - common rphy intialization
1451 * @rphy: rphy to initialise
1452 *
1453 * Used by both sas_end_device_alloc() and sas_expander_alloc() to
1454 * initialise the common rphy component of each.
1455 */
1456static void sas_rphy_initialize(struct sas_rphy *rphy)
1457{
1458 INIT_LIST_HEAD(&rphy->list);
1459}
1460
1461/**
James Bottomley42ab0362006-03-04 09:10:18 -06001462 * sas_end_device_alloc - allocate an rphy for an end device
Rob Landleyeb448202007-11-03 13:30:39 -05001463 * @parent: which port
James Bottomley42ab0362006-03-04 09:10:18 -06001464 *
1465 * Allocates an SAS remote PHY structure, connected to @parent.
1466 *
1467 * Returns:
1468 * SAS PHY allocated or %NULL if the allocation failed.
1469 */
James Bottomley65c92b02006-06-28 12:22:50 -04001470struct sas_rphy *sas_end_device_alloc(struct sas_port *parent)
James Bottomley42ab0362006-03-04 09:10:18 -06001471{
1472 struct Scsi_Host *shost = dev_to_shost(&parent->dev);
1473 struct sas_end_device *rdev;
1474
1475 rdev = kzalloc(sizeof(*rdev), GFP_KERNEL);
1476 if (!rdev) {
James Bottomley42ab0362006-03-04 09:10:18 -06001477 return NULL;
1478 }
1479
1480 device_initialize(&rdev->rphy.dev);
1481 rdev->rphy.dev.parent = get_device(&parent->dev);
James Bottomley2f8600d2006-03-18 15:00:50 -06001482 rdev->rphy.dev.release = sas_end_device_release;
James Bottomley65c92b02006-06-28 12:22:50 -04001483 if (scsi_is_sas_expander_device(parent->dev.parent)) {
1484 struct sas_rphy *rphy = dev_to_rphy(parent->dev.parent);
Kay Sievers71610f52008-12-03 22:41:36 +01001485 dev_set_name(&rdev->rphy.dev, "end_device-%d:%d:%d",
1486 shost->host_no, rphy->scsi_target_id,
1487 parent->port_identifier);
James Bottomley65c92b02006-06-28 12:22:50 -04001488 } else
Kay Sievers71610f52008-12-03 22:41:36 +01001489 dev_set_name(&rdev->rphy.dev, "end_device-%d:%d",
1490 shost->host_no, parent->port_identifier);
James Bottomley42ab0362006-03-04 09:10:18 -06001491 rdev->rphy.identify.device_type = SAS_END_DEVICE;
James Bottomleyc5943d32006-06-12 09:09:18 -05001492 sas_rphy_initialize(&rdev->rphy);
James Bottomley42ab0362006-03-04 09:10:18 -06001493 transport_setup_device(&rdev->rphy.dev);
1494
1495 return &rdev->rphy;
1496}
1497EXPORT_SYMBOL(sas_end_device_alloc);
1498
James Bottomley79cb1812006-03-13 13:50:04 -06001499/**
1500 * sas_expander_alloc - allocate an rphy for an end device
Rob Landleyeb448202007-11-03 13:30:39 -05001501 * @parent: which port
1502 * @type: SAS_EDGE_EXPANDER_DEVICE or SAS_FANOUT_EXPANDER_DEVICE
James Bottomley79cb1812006-03-13 13:50:04 -06001503 *
1504 * Allocates an SAS remote PHY structure, connected to @parent.
1505 *
1506 * Returns:
1507 * SAS PHY allocated or %NULL if the allocation failed.
1508 */
James Bottomley65c92b02006-06-28 12:22:50 -04001509struct sas_rphy *sas_expander_alloc(struct sas_port *parent,
James Bottomley79cb1812006-03-13 13:50:04 -06001510 enum sas_device_type type)
1511{
1512 struct Scsi_Host *shost = dev_to_shost(&parent->dev);
1513 struct sas_expander_device *rdev;
1514 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
1515
1516 BUG_ON(type != SAS_EDGE_EXPANDER_DEVICE &&
1517 type != SAS_FANOUT_EXPANDER_DEVICE);
1518
1519 rdev = kzalloc(sizeof(*rdev), GFP_KERNEL);
1520 if (!rdev) {
James Bottomley79cb1812006-03-13 13:50:04 -06001521 return NULL;
1522 }
1523
1524 device_initialize(&rdev->rphy.dev);
1525 rdev->rphy.dev.parent = get_device(&parent->dev);
James Bottomley2f8600d2006-03-18 15:00:50 -06001526 rdev->rphy.dev.release = sas_expander_release;
James Bottomley79cb1812006-03-13 13:50:04 -06001527 mutex_lock(&sas_host->lock);
1528 rdev->rphy.scsi_target_id = sas_host->next_expander_id++;
1529 mutex_unlock(&sas_host->lock);
Kay Sievers71610f52008-12-03 22:41:36 +01001530 dev_set_name(&rdev->rphy.dev, "expander-%d:%d",
1531 shost->host_no, rdev->rphy.scsi_target_id);
James Bottomley79cb1812006-03-13 13:50:04 -06001532 rdev->rphy.identify.device_type = type;
James Bottomleyc5943d32006-06-12 09:09:18 -05001533 sas_rphy_initialize(&rdev->rphy);
James Bottomley79cb1812006-03-13 13:50:04 -06001534 transport_setup_device(&rdev->rphy.dev);
1535
1536 return &rdev->rphy;
1537}
1538EXPORT_SYMBOL(sas_expander_alloc);
James Bottomley42ab0362006-03-04 09:10:18 -06001539
1540/**
Rob Landleyeb448202007-11-03 13:30:39 -05001541 * sas_rphy_add - add a SAS remote PHY to the device hierarchy
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001542 * @rphy: The remote PHY to be added
1543 *
1544 * Publishes a SAS remote PHY to the rest of the system.
1545 */
1546int sas_rphy_add(struct sas_rphy *rphy)
1547{
James Bottomley65c92b02006-06-28 12:22:50 -04001548 struct sas_port *parent = dev_to_sas_port(rphy->dev.parent);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001549 struct Scsi_Host *shost = dev_to_shost(parent->dev.parent);
1550 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
1551 struct sas_identify *identify = &rphy->identify;
1552 int error;
1553
1554 if (parent->rphy)
1555 return -ENXIO;
1556 parent->rphy = rphy;
1557
1558 error = device_add(&rphy->dev);
1559 if (error)
1560 return error;
1561 transport_add_device(&rphy->dev);
1562 transport_configure_device(&rphy->dev);
James Bottomley39dca552007-07-20 18:22:17 -05001563 if (sas_bsg_initialize(shost, rphy))
Kay Sievers71610f52008-12-03 22:41:36 +01001564 printk("fail to a bsg device %s\n", dev_name(&rphy->dev));
James Bottomley39dca552007-07-20 18:22:17 -05001565
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001566
Christoph Hellwige02f3f52006-01-13 19:04:00 +01001567 mutex_lock(&sas_host->lock);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001568 list_add_tail(&rphy->list, &sas_host->rphy_list);
1569 if (identify->device_type == SAS_END_DEVICE &&
1570 (identify->target_port_protocols &
1571 (SAS_PROTOCOL_SSP|SAS_PROTOCOL_STP|SAS_PROTOCOL_SATA)))
1572 rphy->scsi_target_id = sas_host->next_target_id++;
James Bottomley7676f832006-04-14 09:47:59 -05001573 else if (identify->device_type == SAS_END_DEVICE)
1574 rphy->scsi_target_id = -1;
Christoph Hellwige02f3f52006-01-13 19:04:00 +01001575 mutex_unlock(&sas_host->lock);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001576
James Bottomley79cb1812006-03-13 13:50:04 -06001577 if (identify->device_type == SAS_END_DEVICE &&
1578 rphy->scsi_target_id != -1) {
Dan Williams2fc62e22011-09-20 15:10:19 -07001579 int lun;
1580
1581 if (identify->target_port_protocols & SAS_PROTOCOL_SSP)
1582 lun = SCAN_WILD_CARD;
1583 else
1584 lun = 0;
1585
1586 scsi_scan_target(&rphy->dev, 0, rphy->scsi_target_id, lun, 0);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001587 }
1588
1589 return 0;
1590}
1591EXPORT_SYMBOL(sas_rphy_add);
1592
1593/**
Rob Landleyeb448202007-11-03 13:30:39 -05001594 * sas_rphy_free - free a SAS remote PHY
1595 * @rphy: SAS remote PHY to free
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001596 *
1597 * Frees the specified SAS remote PHY.
1598 *
1599 * Note:
1600 * This function must only be called on a remote
André Goddard Rosaaf901ca2009-11-14 13:09:05 -02001601 * PHY that has not successfully been added using
Darrick J. Wong6f63caa2007-01-26 14:08:43 -08001602 * sas_rphy_add() (or has been sas_rphy_remove()'d)
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001603 */
1604void sas_rphy_free(struct sas_rphy *rphy)
1605{
Mike Anderson92aab642006-03-27 09:37:28 -08001606 struct device *dev = &rphy->dev;
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001607 struct Scsi_Host *shost = dev_to_shost(rphy->dev.parent->parent);
1608 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
1609
Christoph Hellwige02f3f52006-01-13 19:04:00 +01001610 mutex_lock(&sas_host->lock);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001611 list_del(&rphy->list);
Christoph Hellwige02f3f52006-01-13 19:04:00 +01001612 mutex_unlock(&sas_host->lock);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001613
Mike Anderson92aab642006-03-27 09:37:28 -08001614 transport_destroy_device(dev);
James Bottomley2f8600d2006-03-18 15:00:50 -06001615
Mike Anderson92aab642006-03-27 09:37:28 -08001616 put_device(dev);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001617}
1618EXPORT_SYMBOL(sas_rphy_free);
1619
1620/**
Rob Landleyeb448202007-11-03 13:30:39 -05001621 * sas_rphy_delete - remove and free SAS remote PHY
Darrick J. Wong6f63caa2007-01-26 14:08:43 -08001622 * @rphy: SAS remote PHY to remove and free
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001623 *
Darrick J. Wong6f63caa2007-01-26 14:08:43 -08001624 * Removes the specified SAS remote PHY and frees it.
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001625 */
1626void
1627sas_rphy_delete(struct sas_rphy *rphy)
1628{
Darrick J. Wong6f63caa2007-01-26 14:08:43 -08001629 sas_rphy_remove(rphy);
1630 sas_rphy_free(rphy);
1631}
1632EXPORT_SYMBOL(sas_rphy_delete);
1633
1634/**
Dan Williams87c83312011-11-17 17:59:51 -08001635 * sas_rphy_unlink - unlink SAS remote PHY
1636 * @rphy: SAS remote phy to unlink from its parent port
1637 *
1638 * Removes port reference to an rphy
1639 */
1640void sas_rphy_unlink(struct sas_rphy *rphy)
1641{
1642 struct sas_port *parent = dev_to_sas_port(rphy->dev.parent);
1643
1644 parent->rphy = NULL;
1645}
1646EXPORT_SYMBOL(sas_rphy_unlink);
1647
1648/**
Rob Landleyeb448202007-11-03 13:30:39 -05001649 * sas_rphy_remove - remove SAS remote PHY
Darrick J. Wong6f63caa2007-01-26 14:08:43 -08001650 * @rphy: SAS remote phy to remove
1651 *
1652 * Removes the specified SAS remote PHY.
1653 */
1654void
1655sas_rphy_remove(struct sas_rphy *rphy)
1656{
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001657 struct device *dev = &rphy->dev;
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001658
Christoph Hellwigd4054232006-01-04 13:45:20 +01001659 switch (rphy->identify.device_type) {
1660 case SAS_END_DEVICE:
1661 scsi_remove_target(dev);
1662 break;
1663 case SAS_EDGE_EXPANDER_DEVICE:
1664 case SAS_FANOUT_EXPANDER_DEVICE:
James Bottomley65c92b02006-06-28 12:22:50 -04001665 sas_remove_children(dev);
Christoph Hellwigd4054232006-01-04 13:45:20 +01001666 break;
1667 default:
1668 break;
1669 }
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001670
Dan Williams87c83312011-11-17 17:59:51 -08001671 sas_rphy_unlink(rphy);
Joe Lawrence6aa6caf2014-05-22 17:30:54 -04001672 sas_bsg_remove(NULL, rphy);
Christoph Hellwigfe8b2302005-09-25 23:10:33 +02001673 transport_remove_device(dev);
1674 device_del(dev);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001675}
Darrick J. Wong6f63caa2007-01-26 14:08:43 -08001676EXPORT_SYMBOL(sas_rphy_remove);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001677
1678/**
Rob Landleyeb448202007-11-03 13:30:39 -05001679 * scsi_is_sas_rphy - check if a struct device represents a SAS remote PHY
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001680 * @dev: device to check
1681 *
1682 * Returns:
1683 * %1 if the device represents a SAS remote PHY, %0 else
1684 */
1685int scsi_is_sas_rphy(const struct device *dev)
1686{
James Bottomley2f8600d2006-03-18 15:00:50 -06001687 return dev->release == sas_end_device_release ||
1688 dev->release == sas_expander_release;
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001689}
1690EXPORT_SYMBOL(scsi_is_sas_rphy);
1691
1692
1693/*
1694 * SCSI scan helper
1695 */
1696
Christoph Hellwige02f3f52006-01-13 19:04:00 +01001697static int sas_user_scan(struct Scsi_Host *shost, uint channel,
Hannes Reinecke9cb78c12014-06-25 15:27:36 +02001698 uint id, u64 lun)
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001699{
1700 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
1701 struct sas_rphy *rphy;
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001702
Christoph Hellwige02f3f52006-01-13 19:04:00 +01001703 mutex_lock(&sas_host->lock);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001704 list_for_each_entry(rphy, &sas_host->rphy_list, list) {
James Bottomley6d99a3f2006-05-19 10:49:37 -05001705 if (rphy->identify.device_type != SAS_END_DEVICE ||
1706 rphy->scsi_target_id == -1)
Christoph Hellwige02f3f52006-01-13 19:04:00 +01001707 continue;
1708
James Bottomleye8bf3942006-07-11 17:49:34 -04001709 if ((channel == SCAN_WILD_CARD || channel == 0) &&
Christoph Hellwige02f3f52006-01-13 19:04:00 +01001710 (id == SCAN_WILD_CARD || id == rphy->scsi_target_id)) {
James Bottomleye8bf3942006-07-11 17:49:34 -04001711 scsi_scan_target(&rphy->dev, 0,
Christoph Hellwige02f3f52006-01-13 19:04:00 +01001712 rphy->scsi_target_id, lun, 1);
1713 }
1714 }
1715 mutex_unlock(&sas_host->lock);
1716
1717 return 0;
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001718}
1719
1720
1721/*
1722 * Setup / Teardown code
1723 */
1724
James Bottomleyd24e1ee2006-09-06 19:25:22 -05001725#define SETUP_TEMPLATE(attrb, field, perm, test) \
Tony Jonesee959b02008-02-22 00:13:36 +01001726 i->private_##attrb[count] = dev_attr_##field; \
James Bottomley42ab0362006-03-04 09:10:18 -06001727 i->private_##attrb[count].attr.mode = perm; \
James Bottomley42ab0362006-03-04 09:10:18 -06001728 i->attrb[count] = &i->private_##attrb[count]; \
1729 if (test) \
1730 count++
1731
James Bottomleyd24e1ee2006-09-06 19:25:22 -05001732#define SETUP_TEMPLATE_RW(attrb, field, perm, test, ro_test, ro_perm) \
Tony Jonesee959b02008-02-22 00:13:36 +01001733 i->private_##attrb[count] = dev_attr_##field; \
James Bottomleyd24e1ee2006-09-06 19:25:22 -05001734 i->private_##attrb[count].attr.mode = perm; \
1735 if (ro_test) { \
1736 i->private_##attrb[count].attr.mode = ro_perm; \
1737 i->private_##attrb[count].store = NULL; \
1738 } \
1739 i->attrb[count] = &i->private_##attrb[count]; \
1740 if (test) \
1741 count++
James Bottomley42ab0362006-03-04 09:10:18 -06001742
1743#define SETUP_RPORT_ATTRIBUTE(field) \
1744 SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, 1)
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001745
James Bottomleydd9fbb522006-03-02 16:01:31 -06001746#define SETUP_OPTIONAL_RPORT_ATTRIBUTE(field, func) \
James Bottomley42ab0362006-03-04 09:10:18 -06001747 SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, i->f->func)
James Bottomleydd9fbb522006-03-02 16:01:31 -06001748
James Bottomley65c92b02006-06-28 12:22:50 -04001749#define SETUP_PHY_ATTRIBUTE(field) \
James Bottomley42ab0362006-03-04 09:10:18 -06001750 SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, 1)
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001751
James Bottomleyd24e1ee2006-09-06 19:25:22 -05001752#define SETUP_PHY_ATTRIBUTE_RW(field) \
1753 SETUP_TEMPLATE_RW(phy_attrs, field, S_IRUGO | S_IWUSR, 1, \
1754 !i->f->set_phy_speed, S_IRUGO)
1755
Darrick J. Wongacbf1672007-01-11 14:14:57 -08001756#define SETUP_OPTIONAL_PHY_ATTRIBUTE_RW(field, func) \
1757 SETUP_TEMPLATE_RW(phy_attrs, field, S_IRUGO | S_IWUSR, 1, \
1758 !i->f->func, S_IRUGO)
1759
James Bottomley65c92b02006-06-28 12:22:50 -04001760#define SETUP_PORT_ATTRIBUTE(field) \
1761 SETUP_TEMPLATE(port_attrs, field, S_IRUGO, 1)
1762
1763#define SETUP_OPTIONAL_PHY_ATTRIBUTE(field, func) \
James Bottomley42ab0362006-03-04 09:10:18 -06001764 SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, i->f->func)
James Bottomleydd9fbb522006-03-02 16:01:31 -06001765
James Bottomley65c92b02006-06-28 12:22:50 -04001766#define SETUP_PHY_ATTRIBUTE_WRONLY(field) \
Darrick J. Wongfe3b5bf2007-01-11 14:15:35 -08001767 SETUP_TEMPLATE(phy_attrs, field, S_IWUSR, 1)
Christoph Hellwig07ba3a92005-10-19 20:01:31 +02001768
James Bottomley65c92b02006-06-28 12:22:50 -04001769#define SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(field, func) \
Darrick J. Wongfe3b5bf2007-01-11 14:15:35 -08001770 SETUP_TEMPLATE(phy_attrs, field, S_IWUSR, i->f->func)
James Bottomleydd9fbb522006-03-02 16:01:31 -06001771
James Bottomley42ab0362006-03-04 09:10:18 -06001772#define SETUP_END_DEV_ATTRIBUTE(field) \
1773 SETUP_TEMPLATE(end_dev_attrs, field, S_IRUGO, 1)
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001774
James Bottomley79cb1812006-03-13 13:50:04 -06001775#define SETUP_EXPANDER_ATTRIBUTE(field) \
1776 SETUP_TEMPLATE(expander_attrs, expander_##field, S_IRUGO, 1)
1777
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001778/**
Rob Landleyeb448202007-11-03 13:30:39 -05001779 * sas_attach_transport - instantiate SAS transport template
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001780 * @ft: SAS transport class function template
1781 */
1782struct scsi_transport_template *
1783sas_attach_transport(struct sas_function_template *ft)
1784{
1785 struct sas_internal *i;
1786 int count;
1787
Jes Sorensen24669f752006-01-16 10:31:18 -05001788 i = kzalloc(sizeof(struct sas_internal), GFP_KERNEL);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001789 if (!i)
1790 return NULL;
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001791
Christoph Hellwige02f3f52006-01-13 19:04:00 +01001792 i->t.user_scan = sas_user_scan;
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001793
1794 i->t.host_attrs.ac.attrs = &i->host_attrs[0];
1795 i->t.host_attrs.ac.class = &sas_host_class.class;
1796 i->t.host_attrs.ac.match = sas_host_match;
1797 transport_container_register(&i->t.host_attrs);
1798 i->t.host_size = sizeof(struct sas_host_attrs);
1799
1800 i->phy_attr_cont.ac.class = &sas_phy_class.class;
1801 i->phy_attr_cont.ac.attrs = &i->phy_attrs[0];
1802 i->phy_attr_cont.ac.match = sas_phy_match;
1803 transport_container_register(&i->phy_attr_cont);
1804
James Bottomley65c92b02006-06-28 12:22:50 -04001805 i->port_attr_cont.ac.class = &sas_port_class.class;
1806 i->port_attr_cont.ac.attrs = &i->port_attrs[0];
1807 i->port_attr_cont.ac.match = sas_port_match;
1808 transport_container_register(&i->port_attr_cont);
1809
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001810 i->rphy_attr_cont.ac.class = &sas_rphy_class.class;
1811 i->rphy_attr_cont.ac.attrs = &i->rphy_attrs[0];
1812 i->rphy_attr_cont.ac.match = sas_rphy_match;
1813 transport_container_register(&i->rphy_attr_cont);
1814
James Bottomley42ab0362006-03-04 09:10:18 -06001815 i->end_dev_attr_cont.ac.class = &sas_end_dev_class.class;
1816 i->end_dev_attr_cont.ac.attrs = &i->end_dev_attrs[0];
1817 i->end_dev_attr_cont.ac.match = sas_end_dev_match;
1818 transport_container_register(&i->end_dev_attr_cont);
1819
James Bottomley79cb1812006-03-13 13:50:04 -06001820 i->expander_attr_cont.ac.class = &sas_expander_class.class;
1821 i->expander_attr_cont.ac.attrs = &i->expander_attrs[0];
1822 i->expander_attr_cont.ac.match = sas_expander_match;
1823 transport_container_register(&i->expander_attr_cont);
1824
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001825 i->f = ft;
1826
1827 count = 0;
James Bottomley65c92b02006-06-28 12:22:50 -04001828 SETUP_PHY_ATTRIBUTE(initiator_port_protocols);
1829 SETUP_PHY_ATTRIBUTE(target_port_protocols);
1830 SETUP_PHY_ATTRIBUTE(device_type);
1831 SETUP_PHY_ATTRIBUTE(sas_address);
1832 SETUP_PHY_ATTRIBUTE(phy_identifier);
1833 //SETUP_PHY_ATTRIBUTE(port_identifier);
1834 SETUP_PHY_ATTRIBUTE(negotiated_linkrate);
1835 SETUP_PHY_ATTRIBUTE(minimum_linkrate_hw);
James Bottomleyd24e1ee2006-09-06 19:25:22 -05001836 SETUP_PHY_ATTRIBUTE_RW(minimum_linkrate);
James Bottomley65c92b02006-06-28 12:22:50 -04001837 SETUP_PHY_ATTRIBUTE(maximum_linkrate_hw);
James Bottomleyd24e1ee2006-09-06 19:25:22 -05001838 SETUP_PHY_ATTRIBUTE_RW(maximum_linkrate);
Christoph Hellwigc3ee74c2005-09-19 21:59:42 +02001839
James Bottomley65c92b02006-06-28 12:22:50 -04001840 SETUP_PHY_ATTRIBUTE(invalid_dword_count);
1841 SETUP_PHY_ATTRIBUTE(running_disparity_error_count);
1842 SETUP_PHY_ATTRIBUTE(loss_of_dword_sync_count);
1843 SETUP_PHY_ATTRIBUTE(phy_reset_problem_count);
1844 SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(link_reset, phy_reset);
1845 SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(hard_reset, phy_reset);
Darrick J. Wongacbf1672007-01-11 14:14:57 -08001846 SETUP_OPTIONAL_PHY_ATTRIBUTE_RW(enable, phy_enable);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001847 i->phy_attrs[count] = NULL;
1848
1849 count = 0;
James Bottomley65c92b02006-06-28 12:22:50 -04001850 SETUP_PORT_ATTRIBUTE(num_phys);
1851 i->port_attrs[count] = NULL;
1852
1853 count = 0;
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001854 SETUP_RPORT_ATTRIBUTE(rphy_initiator_port_protocols);
1855 SETUP_RPORT_ATTRIBUTE(rphy_target_port_protocols);
1856 SETUP_RPORT_ATTRIBUTE(rphy_device_type);
1857 SETUP_RPORT_ATTRIBUTE(rphy_sas_address);
1858 SETUP_RPORT_ATTRIBUTE(rphy_phy_identifier);
James Bottomleydd9fbb522006-03-02 16:01:31 -06001859 SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_enclosure_identifier,
1860 get_enclosure_identifier);
1861 SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_bay_identifier,
1862 get_bay_identifier);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001863 i->rphy_attrs[count] = NULL;
1864
James Bottomley42ab0362006-03-04 09:10:18 -06001865 count = 0;
1866 SETUP_END_DEV_ATTRIBUTE(end_dev_ready_led_meaning);
1867 SETUP_END_DEV_ATTRIBUTE(end_dev_I_T_nexus_loss_timeout);
1868 SETUP_END_DEV_ATTRIBUTE(end_dev_initiator_response_timeout);
James Bottomley0f880092010-01-18 10:14:51 -06001869 SETUP_END_DEV_ATTRIBUTE(end_dev_tlr_supported);
1870 SETUP_END_DEV_ATTRIBUTE(end_dev_tlr_enabled);
James Bottomley42ab0362006-03-04 09:10:18 -06001871 i->end_dev_attrs[count] = NULL;
1872
James Bottomley79cb1812006-03-13 13:50:04 -06001873 count = 0;
1874 SETUP_EXPANDER_ATTRIBUTE(vendor_id);
1875 SETUP_EXPANDER_ATTRIBUTE(product_id);
1876 SETUP_EXPANDER_ATTRIBUTE(product_rev);
1877 SETUP_EXPANDER_ATTRIBUTE(component_vendor_id);
1878 SETUP_EXPANDER_ATTRIBUTE(component_id);
1879 SETUP_EXPANDER_ATTRIBUTE(component_revision_id);
1880 SETUP_EXPANDER_ATTRIBUTE(level);
1881 i->expander_attrs[count] = NULL;
1882
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001883 return &i->t;
1884}
1885EXPORT_SYMBOL(sas_attach_transport);
1886
1887/**
Rob Landleyeb448202007-11-03 13:30:39 -05001888 * sas_release_transport - release SAS transport template instance
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001889 * @t: transport template instance
1890 */
1891void sas_release_transport(struct scsi_transport_template *t)
1892{
1893 struct sas_internal *i = to_sas_internal(t);
1894
1895 transport_container_unregister(&i->t.host_attrs);
1896 transport_container_unregister(&i->phy_attr_cont);
James Bottomley65c92b02006-06-28 12:22:50 -04001897 transport_container_unregister(&i->port_attr_cont);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001898 transport_container_unregister(&i->rphy_attr_cont);
James Bottomleydb82f842006-03-09 22:06:36 -05001899 transport_container_unregister(&i->end_dev_attr_cont);
James Bottomley79cb1812006-03-13 13:50:04 -06001900 transport_container_unregister(&i->expander_attr_cont);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001901
1902 kfree(i);
1903}
1904EXPORT_SYMBOL(sas_release_transport);
1905
1906static __init int sas_transport_init(void)
1907{
1908 int error;
1909
1910 error = transport_class_register(&sas_host_class);
1911 if (error)
1912 goto out;
1913 error = transport_class_register(&sas_phy_class);
1914 if (error)
1915 goto out_unregister_transport;
James Bottomley65c92b02006-06-28 12:22:50 -04001916 error = transport_class_register(&sas_port_class);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001917 if (error)
1918 goto out_unregister_phy;
James Bottomley65c92b02006-06-28 12:22:50 -04001919 error = transport_class_register(&sas_rphy_class);
1920 if (error)
1921 goto out_unregister_port;
James Bottomley42ab0362006-03-04 09:10:18 -06001922 error = transport_class_register(&sas_end_dev_class);
1923 if (error)
1924 goto out_unregister_rphy;
James Bottomley79cb1812006-03-13 13:50:04 -06001925 error = transport_class_register(&sas_expander_class);
1926 if (error)
1927 goto out_unregister_end_dev;
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001928
1929 return 0;
1930
James Bottomley79cb1812006-03-13 13:50:04 -06001931 out_unregister_end_dev:
1932 transport_class_unregister(&sas_end_dev_class);
James Bottomley42ab0362006-03-04 09:10:18 -06001933 out_unregister_rphy:
1934 transport_class_unregister(&sas_rphy_class);
James Bottomley65c92b02006-06-28 12:22:50 -04001935 out_unregister_port:
1936 transport_class_unregister(&sas_port_class);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001937 out_unregister_phy:
1938 transport_class_unregister(&sas_phy_class);
1939 out_unregister_transport:
1940 transport_class_unregister(&sas_host_class);
1941 out:
1942 return error;
1943
1944}
1945
1946static void __exit sas_transport_exit(void)
1947{
1948 transport_class_unregister(&sas_host_class);
1949 transport_class_unregister(&sas_phy_class);
James Bottomley65c92b02006-06-28 12:22:50 -04001950 transport_class_unregister(&sas_port_class);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001951 transport_class_unregister(&sas_rphy_class);
James Bottomley42ab0362006-03-04 09:10:18 -06001952 transport_class_unregister(&sas_end_dev_class);
James Bottomley79cb1812006-03-13 13:50:04 -06001953 transport_class_unregister(&sas_expander_class);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001954}
1955
1956MODULE_AUTHOR("Christoph Hellwig");
Alexis Bruemmer86b9c4c2007-01-16 15:36:12 -08001957MODULE_DESCRIPTION("SAS Transport Attributes");
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001958MODULE_LICENSE("GPL");
1959
1960module_init(sas_transport_init);
1961module_exit(sas_transport_exit);