blob: b6f958193dade55bdf1f28f3af3f63e487442304 [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/**
James Bottomley3b91d092015-12-09 11:12:03 -0800344 * is_sas_attached - check if device is SAS attached
345 * @sdev: scsi device to check
346 *
347 * returns true if the device is SAS attached
348 */
349int is_sas_attached(struct scsi_device *sdev)
350{
351 struct Scsi_Host *shost = sdev->host;
352
353 return shost->transportt->host_attrs.ac.class ==
354 &sas_host_class.class;
355}
356EXPORT_SYMBOL(is_sas_attached);
357
358
359/**
Rob Landleyeb448202007-11-03 13:30:39 -0500360 * sas_remove_children - tear down a devices SAS data structures
James Bottomley65c92b02006-06-28 12:22:50 -0400361 * @dev: device belonging to the sas object
362 *
363 * Removes all SAS PHYs and remote PHYs for a given object
364 */
365void sas_remove_children(struct device *dev)
366{
367 device_for_each_child(dev, (void *)0, do_sas_phy_delete);
368 device_for_each_child(dev, (void *)1, do_sas_phy_delete);
369}
370EXPORT_SYMBOL(sas_remove_children);
371
372/**
Rob Landleyeb448202007-11-03 13:30:39 -0500373 * sas_remove_host - tear down a Scsi_Host's SAS data structures
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200374 * @shost: Scsi Host that is torn down
375 *
376 * Removes all SAS PHYs and remote PHYs for a given Scsi_Host.
377 * Must be called just before scsi_remove_host for SAS HBAs.
378 */
379void sas_remove_host(struct Scsi_Host *shost)
380{
James Bottomley65c92b02006-06-28 12:22:50 -0400381 sas_remove_children(&shost->shost_gendev);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200382}
383EXPORT_SYMBOL(sas_remove_host);
384
James Bottomley0f880092010-01-18 10:14:51 -0600385/**
James Bottomleybcf508c2015-12-09 11:13:35 -0800386 * sas_get_address - return the SAS address of the device
387 * @sdev: scsi device
388 *
389 * Returns the SAS address of the scsi device
390 */
391u64 sas_get_address(struct scsi_device *sdev)
392{
393 struct sas_end_device *rdev = sas_sdev_to_rdev(sdev);
394
395 return rdev->rphy.identify.sas_address;
396}
397EXPORT_SYMBOL(sas_get_address);
398
399/**
James Bottomley0f880092010-01-18 10:14:51 -0600400 * sas_tlr_supported - checking TLR bit in vpd 0x90
401 * @sdev: scsi device struct
402 *
403 * Check Transport Layer Retries are supported or not.
404 * If vpd page 0x90 is present, TRL is supported.
405 *
406 */
407unsigned int
408sas_tlr_supported(struct scsi_device *sdev)
409{
410 const int vpd_len = 32;
411 struct sas_end_device *rdev = sas_sdev_to_rdev(sdev);
412 char *buffer = kzalloc(vpd_len, GFP_KERNEL);
413 int ret = 0;
414
415 if (scsi_get_vpd_page(sdev, 0x90, buffer, vpd_len))
416 goto out;
417
418 /*
419 * Magic numbers: the VPD Protocol page (0x90)
420 * has a 4 byte header and then one entry per device port
421 * the TLR bit is at offset 8 on each port entry
422 * if we take the first port, that's at total offset 12
423 */
424 ret = buffer[12] & 0x01;
425
426 out:
427 kfree(buffer);
428 rdev->tlr_supported = ret;
429 return ret;
430
431}
432EXPORT_SYMBOL_GPL(sas_tlr_supported);
433
434/**
435 * sas_disable_tlr - setting TLR flags
436 * @sdev: scsi device struct
437 *
438 * Seting tlr_enabled flag to 0.
439 *
440 */
441void
442sas_disable_tlr(struct scsi_device *sdev)
443{
444 struct sas_end_device *rdev = sas_sdev_to_rdev(sdev);
445
446 rdev->tlr_enabled = 0;
447}
448EXPORT_SYMBOL_GPL(sas_disable_tlr);
449
450/**
451 * sas_enable_tlr - setting TLR flags
452 * @sdev: scsi device struct
453 *
454 * Seting tlr_enabled flag 1.
455 *
456 */
457void sas_enable_tlr(struct scsi_device *sdev)
458{
459 unsigned int tlr_supported = 0;
460 tlr_supported = sas_tlr_supported(sdev);
461
462 if (tlr_supported) {
463 struct sas_end_device *rdev = sas_sdev_to_rdev(sdev);
464
465 rdev->tlr_enabled = 1;
466 }
467
468 return;
469}
470EXPORT_SYMBOL_GPL(sas_enable_tlr);
471
472unsigned int sas_is_tlr_enabled(struct scsi_device *sdev)
473{
474 struct sas_end_device *rdev = sas_sdev_to_rdev(sdev);
475 return rdev->tlr_enabled;
476}
477EXPORT_SYMBOL_GPL(sas_is_tlr_enabled);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200478
479/*
James Bottomley65c92b02006-06-28 12:22:50 -0400480 * SAS Phy attributes
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200481 */
482
483#define sas_phy_show_simple(field, name, format_string, cast) \
484static ssize_t \
Tony Jonesee959b02008-02-22 00:13:36 +0100485show_sas_phy_##name(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 snprintf(buf, 20, format_string, cast phy->field); \
491}
492
493#define sas_phy_simple_attr(field, name, format_string, type) \
494 sas_phy_show_simple(field, name, format_string, (type)) \
Tony Jonesee959b02008-02-22 00:13:36 +0100495static DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL)
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200496
497#define sas_phy_show_protocol(field, name) \
498static ssize_t \
Tony Jonesee959b02008-02-22 00:13:36 +0100499show_sas_phy_##name(struct device *dev, \
500 struct device_attribute *attr, char *buf) \
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200501{ \
Tony Jonesee959b02008-02-22 00:13:36 +0100502 struct sas_phy *phy = transport_class_to_phy(dev); \
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200503 \
504 if (!phy->field) \
505 return snprintf(buf, 20, "none\n"); \
506 return get_sas_protocol_names(phy->field, buf); \
507}
508
509#define sas_phy_protocol_attr(field, name) \
510 sas_phy_show_protocol(field, name) \
Tony Jonesee959b02008-02-22 00:13:36 +0100511static DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL)
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200512
513#define sas_phy_show_linkspeed(field) \
514static ssize_t \
Tony Jonesee959b02008-02-22 00:13:36 +0100515show_sas_phy_##field(struct device *dev, \
516 struct device_attribute *attr, char *buf) \
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200517{ \
Tony Jonesee959b02008-02-22 00:13:36 +0100518 struct sas_phy *phy = transport_class_to_phy(dev); \
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200519 \
520 return get_sas_linkspeed_names(phy->field, buf); \
521}
522
James Bottomleyd24e1ee2006-09-06 19:25:22 -0500523/* Fudge to tell if we're minimum or maximum */
524#define sas_phy_store_linkspeed(field) \
525static ssize_t \
Tony Jonesee959b02008-02-22 00:13:36 +0100526store_sas_phy_##field(struct device *dev, \
527 struct device_attribute *attr, \
528 const char *buf, size_t count) \
James Bottomleyd24e1ee2006-09-06 19:25:22 -0500529{ \
Tony Jonesee959b02008-02-22 00:13:36 +0100530 struct sas_phy *phy = transport_class_to_phy(dev); \
James Bottomleyd24e1ee2006-09-06 19:25:22 -0500531 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \
532 struct sas_internal *i = to_sas_internal(shost->transportt); \
533 u32 value; \
534 struct sas_phy_linkrates rates = {0}; \
535 int error; \
536 \
537 error = set_sas_linkspeed_names(&value, buf); \
538 if (error) \
539 return error; \
540 rates.field = value; \
541 error = i->f->set_phy_speed(phy, &rates); \
542 \
543 return error ? error : count; \
544}
545
546#define sas_phy_linkspeed_rw_attr(field) \
547 sas_phy_show_linkspeed(field) \
548 sas_phy_store_linkspeed(field) \
Tony Jonesee959b02008-02-22 00:13:36 +0100549static DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, \
James Bottomleyd24e1ee2006-09-06 19:25:22 -0500550 store_sas_phy_##field)
551
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200552#define sas_phy_linkspeed_attr(field) \
553 sas_phy_show_linkspeed(field) \
Tony Jonesee959b02008-02-22 00:13:36 +0100554static DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL)
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200555
James Bottomleyd24e1ee2006-09-06 19:25:22 -0500556
Christoph Hellwigc3ee74c2005-09-19 21:59:42 +0200557#define sas_phy_show_linkerror(field) \
558static ssize_t \
Tony Jonesee959b02008-02-22 00:13:36 +0100559show_sas_phy_##field(struct device *dev, \
560 struct device_attribute *attr, char *buf) \
Christoph Hellwigc3ee74c2005-09-19 21:59:42 +0200561{ \
Tony Jonesee959b02008-02-22 00:13:36 +0100562 struct sas_phy *phy = transport_class_to_phy(dev); \
Christoph Hellwigc3ee74c2005-09-19 21:59:42 +0200563 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); \
564 struct sas_internal *i = to_sas_internal(shost->transportt); \
565 int error; \
566 \
James Bottomleydd9fbb522006-03-02 16:01:31 -0600567 error = i->f->get_linkerrors ? i->f->get_linkerrors(phy) : 0; \
Christoph Hellwigc3ee74c2005-09-19 21:59:42 +0200568 if (error) \
569 return error; \
570 return snprintf(buf, 20, "%u\n", phy->field); \
571}
572
573#define sas_phy_linkerror_attr(field) \
574 sas_phy_show_linkerror(field) \
Tony Jonesee959b02008-02-22 00:13:36 +0100575static DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL)
Christoph Hellwigc3ee74c2005-09-19 21:59:42 +0200576
577
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200578static ssize_t
Tony Jonesee959b02008-02-22 00:13:36 +0100579show_sas_device_type(struct device *dev,
580 struct device_attribute *attr, char *buf)
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200581{
Tony Jonesee959b02008-02-22 00:13:36 +0100582 struct sas_phy *phy = transport_class_to_phy(dev);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200583
584 if (!phy->identify.device_type)
585 return snprintf(buf, 20, "none\n");
586 return get_sas_device_type_names(phy->identify.device_type, buf);
587}
Tony Jonesee959b02008-02-22 00:13:36 +0100588static DEVICE_ATTR(device_type, S_IRUGO, show_sas_device_type, NULL);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200589
Tony Jonesee959b02008-02-22 00:13:36 +0100590static ssize_t do_sas_phy_enable(struct device *dev,
Darrick J. Wongacbf1672007-01-11 14:14:57 -0800591 size_t count, int enable)
592{
Tony Jonesee959b02008-02-22 00:13:36 +0100593 struct sas_phy *phy = transport_class_to_phy(dev);
Darrick J. Wongacbf1672007-01-11 14:14:57 -0800594 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
595 struct sas_internal *i = to_sas_internal(shost->transportt);
596 int error;
597
598 error = i->f->phy_enable(phy, enable);
599 if (error)
600 return error;
601 phy->enabled = enable;
602 return count;
603};
604
Tony Jonesee959b02008-02-22 00:13:36 +0100605static ssize_t
606store_sas_phy_enable(struct device *dev, struct device_attribute *attr,
607 const char *buf, size_t count)
Darrick J. Wongacbf1672007-01-11 14:14:57 -0800608{
609 if (count < 1)
610 return -EINVAL;
611
612 switch (buf[0]) {
613 case '0':
Tony Jonesee959b02008-02-22 00:13:36 +0100614 do_sas_phy_enable(dev, count, 0);
Darrick J. Wongacbf1672007-01-11 14:14:57 -0800615 break;
616 case '1':
Tony Jonesee959b02008-02-22 00:13:36 +0100617 do_sas_phy_enable(dev, count, 1);
Darrick J. Wongacbf1672007-01-11 14:14:57 -0800618 break;
619 default:
620 return -EINVAL;
621 }
622
623 return count;
624}
625
Tony Jonesee959b02008-02-22 00:13:36 +0100626static ssize_t
627show_sas_phy_enable(struct device *dev, struct device_attribute *attr,
628 char *buf)
Darrick J. Wongacbf1672007-01-11 14:14:57 -0800629{
Tony Jonesee959b02008-02-22 00:13:36 +0100630 struct sas_phy *phy = transport_class_to_phy(dev);
Darrick J. Wongacbf1672007-01-11 14:14:57 -0800631
632 return snprintf(buf, 20, "%d", phy->enabled);
633}
634
Tony Jonesee959b02008-02-22 00:13:36 +0100635static DEVICE_ATTR(enable, S_IRUGO | S_IWUSR, show_sas_phy_enable,
Darrick J. Wongacbf1672007-01-11 14:14:57 -0800636 store_sas_phy_enable);
637
Tony Jonesee959b02008-02-22 00:13:36 +0100638static ssize_t
639do_sas_phy_reset(struct device *dev, size_t count, int hard_reset)
Christoph Hellwig07ba3a92005-10-19 20:01:31 +0200640{
Tony Jonesee959b02008-02-22 00:13:36 +0100641 struct sas_phy *phy = transport_class_to_phy(dev);
Christoph Hellwig07ba3a92005-10-19 20:01:31 +0200642 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
643 struct sas_internal *i = to_sas_internal(shost->transportt);
644 int error;
645
Christoph Hellwig07ba3a92005-10-19 20:01:31 +0200646 error = i->f->phy_reset(phy, hard_reset);
647 if (error)
648 return error;
Dan Williams16d3db12012-01-30 22:53:51 -0800649 phy->enabled = 1;
Christoph Hellwig07ba3a92005-10-19 20:01:31 +0200650 return count;
651};
652
Tony Jonesee959b02008-02-22 00:13:36 +0100653static ssize_t
654store_sas_link_reset(struct device *dev, struct device_attribute *attr,
655 const char *buf, size_t count)
Christoph Hellwig07ba3a92005-10-19 20:01:31 +0200656{
Tony Jonesee959b02008-02-22 00:13:36 +0100657 return do_sas_phy_reset(dev, count, 0);
Christoph Hellwig07ba3a92005-10-19 20:01:31 +0200658}
Tony Jonesee959b02008-02-22 00:13:36 +0100659static DEVICE_ATTR(link_reset, S_IWUSR, NULL, store_sas_link_reset);
Christoph Hellwig07ba3a92005-10-19 20:01:31 +0200660
Tony Jonesee959b02008-02-22 00:13:36 +0100661static ssize_t
662store_sas_hard_reset(struct device *dev, struct device_attribute *attr,
663 const char *buf, size_t count)
Christoph Hellwig07ba3a92005-10-19 20:01:31 +0200664{
Tony Jonesee959b02008-02-22 00:13:36 +0100665 return do_sas_phy_reset(dev, count, 1);
Christoph Hellwig07ba3a92005-10-19 20:01:31 +0200666}
Tony Jonesee959b02008-02-22 00:13:36 +0100667static DEVICE_ATTR(hard_reset, S_IWUSR, NULL, store_sas_hard_reset);
Christoph Hellwig07ba3a92005-10-19 20:01:31 +0200668
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200669sas_phy_protocol_attr(identify.initiator_port_protocols,
670 initiator_port_protocols);
671sas_phy_protocol_attr(identify.target_port_protocols,
672 target_port_protocols);
673sas_phy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n",
674 unsigned long long);
675sas_phy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8);
James Bottomleyc9fefeb2006-07-02 11:10:18 -0500676//sas_phy_simple_attr(port_identifier, port_identifier, "%d\n", int);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200677sas_phy_linkspeed_attr(negotiated_linkrate);
678sas_phy_linkspeed_attr(minimum_linkrate_hw);
James Bottomleyd24e1ee2006-09-06 19:25:22 -0500679sas_phy_linkspeed_rw_attr(minimum_linkrate);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200680sas_phy_linkspeed_attr(maximum_linkrate_hw);
James Bottomleyd24e1ee2006-09-06 19:25:22 -0500681sas_phy_linkspeed_rw_attr(maximum_linkrate);
Christoph Hellwigc3ee74c2005-09-19 21:59:42 +0200682sas_phy_linkerror_attr(invalid_dword_count);
683sas_phy_linkerror_attr(running_disparity_error_count);
684sas_phy_linkerror_attr(loss_of_dword_sync_count);
685sas_phy_linkerror_attr(phy_reset_problem_count);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200686
Dan Williams0b3e09d2011-12-20 01:03:48 -0800687static int sas_phy_setup(struct transport_container *tc, struct device *dev,
688 struct device *cdev)
689{
690 struct sas_phy *phy = dev_to_phy(dev);
691 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
692 struct sas_internal *i = to_sas_internal(shost->transportt);
693
694 if (i->f->phy_setup)
695 i->f->phy_setup(phy);
696
697 return 0;
698}
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200699
700static DECLARE_TRANSPORT_CLASS(sas_phy_class,
Dan Williams0b3e09d2011-12-20 01:03:48 -0800701 "sas_phy", sas_phy_setup, NULL, NULL);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200702
703static int sas_phy_match(struct attribute_container *cont, struct device *dev)
704{
705 struct Scsi_Host *shost;
706 struct sas_internal *i;
707
708 if (!scsi_is_sas_phy(dev))
709 return 0;
710 shost = dev_to_shost(dev->parent);
711
712 if (!shost->transportt)
713 return 0;
714 if (shost->transportt->host_attrs.ac.class !=
715 &sas_host_class.class)
716 return 0;
717
718 i = to_sas_internal(shost->transportt);
719 return &i->phy_attr_cont.ac == cont;
720}
721
722static void sas_phy_release(struct device *dev)
723{
724 struct sas_phy *phy = dev_to_phy(dev);
Dan Williams0b3e09d2011-12-20 01:03:48 -0800725 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
726 struct sas_internal *i = to_sas_internal(shost->transportt);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200727
Dan Williams0b3e09d2011-12-20 01:03:48 -0800728 if (i->f->phy_release)
729 i->f->phy_release(phy);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200730 put_device(dev->parent);
731 kfree(phy);
732}
733
734/**
Rob Landleyeb448202007-11-03 13:30:39 -0500735 * sas_phy_alloc - allocates and initialize a SAS PHY structure
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200736 * @parent: Parent device
Moore, Ericd99ca412006-01-26 16:20:02 -0700737 * @number: Phy index
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200738 *
739 * Allocates an SAS PHY structure. It will be added in the device tree
740 * below the device specified by @parent, which has to be either a Scsi_Host
741 * or sas_rphy.
742 *
743 * Returns:
744 * SAS PHY allocated or %NULL if the allocation failed.
745 */
746struct sas_phy *sas_phy_alloc(struct device *parent, int number)
747{
748 struct Scsi_Host *shost = dev_to_shost(parent);
749 struct sas_phy *phy;
750
Jes Sorensen24669f752006-01-16 10:31:18 -0500751 phy = kzalloc(sizeof(*phy), GFP_KERNEL);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200752 if (!phy)
753 return NULL;
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200754
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200755 phy->number = number;
Darrick J. Wongacbf1672007-01-11 14:14:57 -0800756 phy->enabled = 1;
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200757
758 device_initialize(&phy->dev);
759 phy->dev.parent = get_device(parent);
760 phy->dev.release = sas_phy_release;
James Bottomley65c92b02006-06-28 12:22:50 -0400761 INIT_LIST_HEAD(&phy->port_siblings);
James Bottomley79cb1812006-03-13 13:50:04 -0600762 if (scsi_is_sas_expander_device(parent)) {
763 struct sas_rphy *rphy = dev_to_rphy(parent);
Kay Sievers71610f52008-12-03 22:41:36 +0100764 dev_set_name(&phy->dev, "phy-%d:%d:%d", shost->host_no,
James Bottomley79cb1812006-03-13 13:50:04 -0600765 rphy->scsi_target_id, number);
766 } else
Kay Sievers71610f52008-12-03 22:41:36 +0100767 dev_set_name(&phy->dev, "phy-%d:%d", shost->host_no, number);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200768
769 transport_setup_device(&phy->dev);
770
771 return phy;
772}
773EXPORT_SYMBOL(sas_phy_alloc);
774
775/**
Rob Landleyeb448202007-11-03 13:30:39 -0500776 * sas_phy_add - add a SAS PHY to the device hierarchy
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200777 * @phy: The PHY to be added
778 *
779 * Publishes a SAS PHY to the rest of the system.
780 */
781int sas_phy_add(struct sas_phy *phy)
782{
783 int error;
784
785 error = device_add(&phy->dev);
786 if (!error) {
787 transport_add_device(&phy->dev);
788 transport_configure_device(&phy->dev);
789 }
790
791 return error;
792}
793EXPORT_SYMBOL(sas_phy_add);
794
795/**
Rob Landleyeb448202007-11-03 13:30:39 -0500796 * sas_phy_free - free a SAS PHY
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200797 * @phy: SAS PHY to free
798 *
799 * Frees the specified SAS PHY.
800 *
801 * Note:
802 * This function must only be called on a PHY that has not
André Goddard Rosaaf901ca2009-11-14 13:09:05 -0200803 * successfully been added using sas_phy_add().
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200804 */
805void sas_phy_free(struct sas_phy *phy)
806{
807 transport_destroy_device(&phy->dev);
Mike Anderson92aab642006-03-27 09:37:28 -0800808 put_device(&phy->dev);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200809}
810EXPORT_SYMBOL(sas_phy_free);
811
812/**
Rob Landleyeb448202007-11-03 13:30:39 -0500813 * sas_phy_delete - remove SAS PHY
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200814 * @phy: SAS PHY to remove
815 *
816 * Removes the specified SAS PHY. If the SAS PHY has an
817 * associated remote PHY it is removed before.
818 */
819void
820sas_phy_delete(struct sas_phy *phy)
821{
822 struct device *dev = &phy->dev;
823
James Bottomley65c92b02006-06-28 12:22:50 -0400824 /* this happens if the phy is still part of a port when deleted */
825 BUG_ON(!list_empty(&phy->port_siblings));
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200826
827 transport_remove_device(dev);
828 device_del(dev);
829 transport_destroy_device(dev);
Mike Anderson92aab642006-03-27 09:37:28 -0800830 put_device(dev);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200831}
832EXPORT_SYMBOL(sas_phy_delete);
833
834/**
Rob Landleyeb448202007-11-03 13:30:39 -0500835 * scsi_is_sas_phy - check if a struct device represents a SAS PHY
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +0200836 * @dev: device to check
837 *
838 * Returns:
839 * %1 if the device represents a SAS PHY, %0 else
840 */
841int scsi_is_sas_phy(const struct device *dev)
842{
843 return dev->release == sas_phy_release;
844}
845EXPORT_SYMBOL(scsi_is_sas_phy);
846
847/*
James Bottomley65c92b02006-06-28 12:22:50 -0400848 * SAS Port attributes
849 */
850#define sas_port_show_simple(field, name, format_string, cast) \
851static ssize_t \
Tony Jonesee959b02008-02-22 00:13:36 +0100852show_sas_port_##name(struct device *dev, \
853 struct device_attribute *attr, char *buf) \
James Bottomley65c92b02006-06-28 12:22:50 -0400854{ \
Tony Jonesee959b02008-02-22 00:13:36 +0100855 struct sas_port *port = transport_class_to_sas_port(dev); \
James Bottomley65c92b02006-06-28 12:22:50 -0400856 \
857 return snprintf(buf, 20, format_string, cast port->field); \
858}
859
860#define sas_port_simple_attr(field, name, format_string, type) \
861 sas_port_show_simple(field, name, format_string, (type)) \
Tony Jonesee959b02008-02-22 00:13:36 +0100862static DEVICE_ATTR(name, S_IRUGO, show_sas_port_##name, NULL)
James Bottomley65c92b02006-06-28 12:22:50 -0400863
864sas_port_simple_attr(num_phys, num_phys, "%d\n", int);
865
866static DECLARE_TRANSPORT_CLASS(sas_port_class,
867 "sas_port", NULL, NULL, NULL);
868
869static int sas_port_match(struct attribute_container *cont, struct device *dev)
870{
871 struct Scsi_Host *shost;
872 struct sas_internal *i;
873
874 if (!scsi_is_sas_port(dev))
875 return 0;
876 shost = dev_to_shost(dev->parent);
877
878 if (!shost->transportt)
879 return 0;
880 if (shost->transportt->host_attrs.ac.class !=
881 &sas_host_class.class)
882 return 0;
883
884 i = to_sas_internal(shost->transportt);
885 return &i->port_attr_cont.ac == cont;
886}
887
888
889static void sas_port_release(struct device *dev)
890{
891 struct sas_port *port = dev_to_sas_port(dev);
892
893 BUG_ON(!list_empty(&port->phy_list));
894
895 put_device(dev->parent);
896 kfree(port);
897}
898
899static void sas_port_create_link(struct sas_port *port,
900 struct sas_phy *phy)
901{
Darrick J. Wong21434962007-01-26 14:08:46 -0800902 int res;
903
904 res = sysfs_create_link(&port->dev.kobj, &phy->dev.kobj,
Kay Sievers71610f52008-12-03 22:41:36 +0100905 dev_name(&phy->dev));
Darrick J. Wong21434962007-01-26 14:08:46 -0800906 if (res)
907 goto err;
908 res = sysfs_create_link(&phy->dev.kobj, &port->dev.kobj, "port");
909 if (res)
910 goto err;
911 return;
912err:
913 printk(KERN_ERR "%s: Cannot create port links, err=%d\n",
Harvey Harrisoncadbd4a2008-07-03 23:47:27 -0700914 __func__, res);
James Bottomley65c92b02006-06-28 12:22:50 -0400915}
916
917static void sas_port_delete_link(struct sas_port *port,
918 struct sas_phy *phy)
919{
Kay Sievers71610f52008-12-03 22:41:36 +0100920 sysfs_remove_link(&port->dev.kobj, dev_name(&phy->dev));
James Bottomley65c92b02006-06-28 12:22:50 -0400921 sysfs_remove_link(&phy->dev.kobj, "port");
922}
923
924/** sas_port_alloc - allocate and initialize a SAS port structure
925 *
926 * @parent: parent device
927 * @port_id: port number
928 *
929 * Allocates a SAS port structure. It will be added to the device tree
930 * below the device specified by @parent which must be either a Scsi_Host
931 * or a sas_expander_device.
932 *
933 * Returns %NULL on error
934 */
935struct sas_port *sas_port_alloc(struct device *parent, int port_id)
936{
937 struct Scsi_Host *shost = dev_to_shost(parent);
938 struct sas_port *port;
939
940 port = kzalloc(sizeof(*port), GFP_KERNEL);
941 if (!port)
942 return NULL;
943
944 port->port_identifier = port_id;
945
946 device_initialize(&port->dev);
947
948 port->dev.parent = get_device(parent);
949 port->dev.release = sas_port_release;
950
951 mutex_init(&port->phy_list_mutex);
952 INIT_LIST_HEAD(&port->phy_list);
953
954 if (scsi_is_sas_expander_device(parent)) {
955 struct sas_rphy *rphy = dev_to_rphy(parent);
Kay Sievers71610f52008-12-03 22:41:36 +0100956 dev_set_name(&port->dev, "port-%d:%d:%d", shost->host_no,
957 rphy->scsi_target_id, port->port_identifier);
James Bottomley65c92b02006-06-28 12:22:50 -0400958 } else
Kay Sievers71610f52008-12-03 22:41:36 +0100959 dev_set_name(&port->dev, "port-%d:%d", shost->host_no,
960 port->port_identifier);
James Bottomley65c92b02006-06-28 12:22:50 -0400961
962 transport_setup_device(&port->dev);
963
964 return port;
965}
966EXPORT_SYMBOL(sas_port_alloc);
967
James Bottomleyc9fefeb2006-07-02 11:10:18 -0500968/** sas_port_alloc_num - allocate and initialize a SAS port structure
969 *
970 * @parent: parent device
971 *
972 * Allocates a SAS port structure and a number to go with it. This
973 * interface is really for adapters where the port number has no
974 * meansing, so the sas class should manage them. It will be added to
975 * the device tree below the device specified by @parent which must be
976 * either a Scsi_Host or a sas_expander_device.
977 *
978 * Returns %NULL on error
979 */
980struct sas_port *sas_port_alloc_num(struct device *parent)
981{
982 int index;
983 struct Scsi_Host *shost = dev_to_shost(parent);
984 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
985
986 /* FIXME: use idr for this eventually */
987 mutex_lock(&sas_host->lock);
988 if (scsi_is_sas_expander_device(parent)) {
989 struct sas_rphy *rphy = dev_to_rphy(parent);
990 struct sas_expander_device *exp = rphy_to_expander_device(rphy);
991
992 index = exp->next_port_id++;
993 } else
994 index = sas_host->next_port_id++;
995 mutex_unlock(&sas_host->lock);
996 return sas_port_alloc(parent, index);
997}
998EXPORT_SYMBOL(sas_port_alloc_num);
999
James Bottomley65c92b02006-06-28 12:22:50 -04001000/**
1001 * sas_port_add - add a SAS port to the device hierarchy
James Bottomley65c92b02006-06-28 12:22:50 -04001002 * @port: port to be added
1003 *
1004 * publishes a port to the rest of the system
1005 */
1006int sas_port_add(struct sas_port *port)
1007{
1008 int error;
1009
1010 /* No phys should be added until this is made visible */
1011 BUG_ON(!list_empty(&port->phy_list));
1012
1013 error = device_add(&port->dev);
1014
1015 if (error)
1016 return error;
1017
1018 transport_add_device(&port->dev);
1019 transport_configure_device(&port->dev);
1020
1021 return 0;
1022}
1023EXPORT_SYMBOL(sas_port_add);
1024
1025/**
Rob Landleyeb448202007-11-03 13:30:39 -05001026 * sas_port_free - free a SAS PORT
James Bottomley65c92b02006-06-28 12:22:50 -04001027 * @port: SAS PORT to free
1028 *
1029 * Frees the specified SAS PORT.
1030 *
1031 * Note:
1032 * This function must only be called on a PORT that has not
André Goddard Rosaaf901ca2009-11-14 13:09:05 -02001033 * successfully been added using sas_port_add().
James Bottomley65c92b02006-06-28 12:22:50 -04001034 */
1035void sas_port_free(struct sas_port *port)
1036{
1037 transport_destroy_device(&port->dev);
1038 put_device(&port->dev);
1039}
1040EXPORT_SYMBOL(sas_port_free);
1041
1042/**
Rob Landleyeb448202007-11-03 13:30:39 -05001043 * sas_port_delete - remove SAS PORT
James Bottomley65c92b02006-06-28 12:22:50 -04001044 * @port: SAS PORT to remove
1045 *
1046 * Removes the specified SAS PORT. If the SAS PORT has an
1047 * associated phys, unlink them from the port as well.
1048 */
1049void sas_port_delete(struct sas_port *port)
1050{
1051 struct device *dev = &port->dev;
1052 struct sas_phy *phy, *tmp_phy;
1053
1054 if (port->rphy) {
1055 sas_rphy_delete(port->rphy);
1056 port->rphy = NULL;
1057 }
1058
1059 mutex_lock(&port->phy_list_mutex);
1060 list_for_each_entry_safe(phy, tmp_phy, &port->phy_list,
1061 port_siblings) {
1062 sas_port_delete_link(port, phy);
1063 list_del_init(&phy->port_siblings);
1064 }
1065 mutex_unlock(&port->phy_list_mutex);
1066
James Bottomleya0e1b6e2006-07-09 12:38:19 -05001067 if (port->is_backlink) {
1068 struct device *parent = port->dev.parent;
1069
Kay Sievers71610f52008-12-03 22:41:36 +01001070 sysfs_remove_link(&port->dev.kobj, dev_name(parent));
James Bottomleya0e1b6e2006-07-09 12:38:19 -05001071 port->is_backlink = 0;
1072 }
1073
James Bottomley65c92b02006-06-28 12:22:50 -04001074 transport_remove_device(dev);
1075 device_del(dev);
1076 transport_destroy_device(dev);
1077 put_device(dev);
1078}
1079EXPORT_SYMBOL(sas_port_delete);
1080
1081/**
Rob Landleyeb448202007-11-03 13:30:39 -05001082 * scsi_is_sas_port - check if a struct device represents a SAS port
James Bottomley65c92b02006-06-28 12:22:50 -04001083 * @dev: device to check
1084 *
1085 * Returns:
1086 * %1 if the device represents a SAS Port, %0 else
1087 */
1088int scsi_is_sas_port(const struct device *dev)
1089{
1090 return dev->release == sas_port_release;
1091}
1092EXPORT_SYMBOL(scsi_is_sas_port);
1093
1094/**
Dan Williamsf41a0c42011-12-21 21:33:17 -08001095 * sas_port_get_phy - try to take a reference on a port member
1096 * @port: port to check
1097 */
1098struct sas_phy *sas_port_get_phy(struct sas_port *port)
1099{
1100 struct sas_phy *phy;
1101
1102 mutex_lock(&port->phy_list_mutex);
1103 if (list_empty(&port->phy_list))
1104 phy = NULL;
1105 else {
1106 struct list_head *ent = port->phy_list.next;
1107
1108 phy = list_entry(ent, typeof(*phy), port_siblings);
1109 get_device(&phy->dev);
1110 }
1111 mutex_unlock(&port->phy_list_mutex);
1112
1113 return phy;
1114}
1115EXPORT_SYMBOL(sas_port_get_phy);
1116
1117/**
James Bottomley65c92b02006-06-28 12:22:50 -04001118 * sas_port_add_phy - add another phy to a port to form a wide port
1119 * @port: port to add the phy to
1120 * @phy: phy to add
1121 *
1122 * When a port is initially created, it is empty (has no phys). All
1123 * ports must have at least one phy to operated, and all wide ports
1124 * must have at least two. The current code makes no difference
1125 * between ports and wide ports, but the only object that can be
1126 * connected to a remote device is a port, so ports must be formed on
1127 * all devices with phys if they're connected to anything.
1128 */
1129void sas_port_add_phy(struct sas_port *port, struct sas_phy *phy)
1130{
1131 mutex_lock(&port->phy_list_mutex);
1132 if (unlikely(!list_empty(&phy->port_siblings))) {
1133 /* make sure we're already on this port */
1134 struct sas_phy *tmp;
1135
1136 list_for_each_entry(tmp, &port->phy_list, port_siblings)
1137 if (tmp == phy)
1138 break;
1139 /* If this trips, you added a phy that was already
1140 * part of a different port */
1141 if (unlikely(tmp != phy)) {
Kay Sievers71610f52008-12-03 22:41:36 +01001142 dev_printk(KERN_ERR, &port->dev, "trying to add phy %s fails: it's already part of another port\n",
1143 dev_name(&phy->dev));
James Bottomley65c92b02006-06-28 12:22:50 -04001144 BUG();
1145 }
1146 } else {
1147 sas_port_create_link(port, phy);
1148 list_add_tail(&phy->port_siblings, &port->phy_list);
1149 port->num_phys++;
1150 }
1151 mutex_unlock(&port->phy_list_mutex);
1152}
1153EXPORT_SYMBOL(sas_port_add_phy);
1154
1155/**
1156 * sas_port_delete_phy - remove a phy from a port or wide port
1157 * @port: port to remove the phy from
1158 * @phy: phy to remove
1159 *
1160 * This operation is used for tearing down ports again. It must be
1161 * done to every port or wide port before calling sas_port_delete.
1162 */
1163void sas_port_delete_phy(struct sas_port *port, struct sas_phy *phy)
1164{
1165 mutex_lock(&port->phy_list_mutex);
1166 sas_port_delete_link(port, phy);
1167 list_del_init(&phy->port_siblings);
1168 port->num_phys--;
1169 mutex_unlock(&port->phy_list_mutex);
1170}
1171EXPORT_SYMBOL(sas_port_delete_phy);
1172
James Bottomleya0e1b6e2006-07-09 12:38:19 -05001173void sas_port_mark_backlink(struct sas_port *port)
1174{
Darrick J. Wong21434962007-01-26 14:08:46 -08001175 int res;
James Bottomleya0e1b6e2006-07-09 12:38:19 -05001176 struct device *parent = port->dev.parent->parent->parent;
1177
1178 if (port->is_backlink)
1179 return;
1180 port->is_backlink = 1;
Darrick J. Wong21434962007-01-26 14:08:46 -08001181 res = sysfs_create_link(&port->dev.kobj, &parent->kobj,
Kay Sievers71610f52008-12-03 22:41:36 +01001182 dev_name(parent));
Darrick J. Wong21434962007-01-26 14:08:46 -08001183 if (res)
1184 goto err;
1185 return;
1186err:
1187 printk(KERN_ERR "%s: Cannot create port backlink, err=%d\n",
Harvey Harrisoncadbd4a2008-07-03 23:47:27 -07001188 __func__, res);
James Bottomleya0e1b6e2006-07-09 12:38:19 -05001189
1190}
1191EXPORT_SYMBOL(sas_port_mark_backlink);
1192
James Bottomley65c92b02006-06-28 12:22:50 -04001193/*
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001194 * SAS remote PHY attributes.
1195 */
1196
1197#define sas_rphy_show_simple(field, name, format_string, cast) \
1198static ssize_t \
Tony Jonesee959b02008-02-22 00:13:36 +01001199show_sas_rphy_##name(struct device *dev, \
1200 struct device_attribute *attr, char *buf) \
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001201{ \
Tony Jonesee959b02008-02-22 00:13:36 +01001202 struct sas_rphy *rphy = transport_class_to_rphy(dev); \
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001203 \
1204 return snprintf(buf, 20, format_string, cast rphy->field); \
1205}
1206
1207#define sas_rphy_simple_attr(field, name, format_string, type) \
1208 sas_rphy_show_simple(field, name, format_string, (type)) \
Tony Jonesee959b02008-02-22 00:13:36 +01001209static SAS_DEVICE_ATTR(rphy, name, S_IRUGO, \
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001210 show_sas_rphy_##name, NULL)
1211
1212#define sas_rphy_show_protocol(field, name) \
1213static ssize_t \
Tony Jonesee959b02008-02-22 00:13:36 +01001214show_sas_rphy_##name(struct device *dev, \
1215 struct device_attribute *attr, char *buf) \
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001216{ \
Tony Jonesee959b02008-02-22 00:13:36 +01001217 struct sas_rphy *rphy = transport_class_to_rphy(dev); \
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001218 \
1219 if (!rphy->field) \
1220 return snprintf(buf, 20, "none\n"); \
1221 return get_sas_protocol_names(rphy->field, buf); \
1222}
1223
1224#define sas_rphy_protocol_attr(field, name) \
1225 sas_rphy_show_protocol(field, name) \
Tony Jonesee959b02008-02-22 00:13:36 +01001226static SAS_DEVICE_ATTR(rphy, name, S_IRUGO, \
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001227 show_sas_rphy_##name, NULL)
1228
1229static ssize_t
Tony Jonesee959b02008-02-22 00:13:36 +01001230show_sas_rphy_device_type(struct device *dev,
1231 struct device_attribute *attr, char *buf)
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001232{
Tony Jonesee959b02008-02-22 00:13:36 +01001233 struct sas_rphy *rphy = transport_class_to_rphy(dev);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001234
1235 if (!rphy->identify.device_type)
1236 return snprintf(buf, 20, "none\n");
1237 return get_sas_device_type_names(
1238 rphy->identify.device_type, buf);
1239}
1240
Tony Jonesee959b02008-02-22 00:13:36 +01001241static SAS_DEVICE_ATTR(rphy, device_type, S_IRUGO,
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001242 show_sas_rphy_device_type, NULL);
1243
Christoph Hellwiga0125642006-02-16 13:31:47 +01001244static ssize_t
Tony Jonesee959b02008-02-22 00:13:36 +01001245show_sas_rphy_enclosure_identifier(struct device *dev,
1246 struct device_attribute *attr, char *buf)
Christoph Hellwiga0125642006-02-16 13:31:47 +01001247{
Tony Jonesee959b02008-02-22 00:13:36 +01001248 struct sas_rphy *rphy = transport_class_to_rphy(dev);
Christoph Hellwiga0125642006-02-16 13:31:47 +01001249 struct sas_phy *phy = dev_to_phy(rphy->dev.parent);
1250 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
1251 struct sas_internal *i = to_sas_internal(shost->transportt);
1252 u64 identifier;
1253 int error;
1254
Christoph Hellwiga0125642006-02-16 13:31:47 +01001255 error = i->f->get_enclosure_identifier(rphy, &identifier);
1256 if (error)
1257 return error;
1258 return sprintf(buf, "0x%llx\n", (unsigned long long)identifier);
1259}
1260
Tony Jonesee959b02008-02-22 00:13:36 +01001261static SAS_DEVICE_ATTR(rphy, enclosure_identifier, S_IRUGO,
Christoph Hellwiga0125642006-02-16 13:31:47 +01001262 show_sas_rphy_enclosure_identifier, NULL);
1263
1264static ssize_t
Tony Jonesee959b02008-02-22 00:13:36 +01001265show_sas_rphy_bay_identifier(struct device *dev,
1266 struct device_attribute *attr, char *buf)
Christoph Hellwiga0125642006-02-16 13:31:47 +01001267{
Tony Jonesee959b02008-02-22 00:13:36 +01001268 struct sas_rphy *rphy = transport_class_to_rphy(dev);
Christoph Hellwiga0125642006-02-16 13:31:47 +01001269 struct sas_phy *phy = dev_to_phy(rphy->dev.parent);
1270 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
1271 struct sas_internal *i = to_sas_internal(shost->transportt);
1272 int val;
1273
Christoph Hellwiga0125642006-02-16 13:31:47 +01001274 val = i->f->get_bay_identifier(rphy);
1275 if (val < 0)
1276 return val;
1277 return sprintf(buf, "%d\n", val);
1278}
1279
Tony Jonesee959b02008-02-22 00:13:36 +01001280static SAS_DEVICE_ATTR(rphy, bay_identifier, S_IRUGO,
Christoph Hellwiga0125642006-02-16 13:31:47 +01001281 show_sas_rphy_bay_identifier, NULL);
1282
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001283sas_rphy_protocol_attr(identify.initiator_port_protocols,
1284 initiator_port_protocols);
1285sas_rphy_protocol_attr(identify.target_port_protocols, target_port_protocols);
1286sas_rphy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n",
1287 unsigned long long);
1288sas_rphy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8);
Hannes Reineckecdc43ae2016-03-14 10:43:08 +01001289sas_rphy_simple_attr(scsi_target_id, scsi_target_id, "%d\n", u32);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001290
James Bottomley42ab0362006-03-04 09:10:18 -06001291/* only need 8 bytes of data plus header (4 or 8) */
1292#define BUF_SIZE 64
1293
1294int sas_read_port_mode_page(struct scsi_device *sdev)
1295{
1296 char *buffer = kzalloc(BUF_SIZE, GFP_KERNEL), *msdata;
James Bottomley0f880092010-01-18 10:14:51 -06001297 struct sas_end_device *rdev = sas_sdev_to_rdev(sdev);
James Bottomley42ab0362006-03-04 09:10:18 -06001298 struct scsi_mode_data mode_data;
1299 int res, error;
1300
James Bottomley42ab0362006-03-04 09:10:18 -06001301 if (!buffer)
1302 return -ENOMEM;
1303
1304 res = scsi_mode_sense(sdev, 1, 0x19, buffer, BUF_SIZE, 30*HZ, 3,
1305 &mode_data, NULL);
1306
1307 error = -EINVAL;
1308 if (!scsi_status_is_good(res))
1309 goto out;
1310
1311 msdata = buffer + mode_data.header_length +
1312 mode_data.block_descriptor_length;
1313
1314 if (msdata - buffer > BUF_SIZE - 8)
1315 goto out;
1316
1317 error = 0;
1318
1319 rdev->ready_led_meaning = msdata[2] & 0x10 ? 1 : 0;
1320 rdev->I_T_nexus_loss_timeout = (msdata[4] << 8) + msdata[5];
1321 rdev->initiator_response_timeout = (msdata[6] << 8) + msdata[7];
1322
1323 out:
1324 kfree(buffer);
1325 return error;
1326}
1327EXPORT_SYMBOL(sas_read_port_mode_page);
1328
James Bottomley79cb1812006-03-13 13:50:04 -06001329static DECLARE_TRANSPORT_CLASS(sas_end_dev_class,
1330 "sas_end_device", NULL, NULL, NULL);
1331
James Bottomley42ab0362006-03-04 09:10:18 -06001332#define sas_end_dev_show_simple(field, name, format_string, cast) \
1333static ssize_t \
Tony Jonesee959b02008-02-22 00:13:36 +01001334show_sas_end_dev_##name(struct device *dev, \
1335 struct device_attribute *attr, char *buf) \
James Bottomley42ab0362006-03-04 09:10:18 -06001336{ \
Tony Jonesee959b02008-02-22 00:13:36 +01001337 struct sas_rphy *rphy = transport_class_to_rphy(dev); \
James Bottomley42ab0362006-03-04 09:10:18 -06001338 struct sas_end_device *rdev = rphy_to_end_device(rphy); \
1339 \
1340 return snprintf(buf, 20, format_string, cast rdev->field); \
1341}
1342
1343#define sas_end_dev_simple_attr(field, name, format_string, type) \
1344 sas_end_dev_show_simple(field, name, format_string, (type)) \
Tony Jonesee959b02008-02-22 00:13:36 +01001345static SAS_DEVICE_ATTR(end_dev, name, S_IRUGO, \
James Bottomley42ab0362006-03-04 09:10:18 -06001346 show_sas_end_dev_##name, NULL)
1347
1348sas_end_dev_simple_attr(ready_led_meaning, ready_led_meaning, "%d\n", int);
1349sas_end_dev_simple_attr(I_T_nexus_loss_timeout, I_T_nexus_loss_timeout,
1350 "%d\n", int);
1351sas_end_dev_simple_attr(initiator_response_timeout, initiator_response_timeout,
1352 "%d\n", int);
James Bottomley0f880092010-01-18 10:14:51 -06001353sas_end_dev_simple_attr(tlr_supported, tlr_supported,
1354 "%d\n", int);
1355sas_end_dev_simple_attr(tlr_enabled, tlr_enabled,
1356 "%d\n", int);
James Bottomley42ab0362006-03-04 09:10:18 -06001357
James Bottomley79cb1812006-03-13 13:50:04 -06001358static DECLARE_TRANSPORT_CLASS(sas_expander_class,
1359 "sas_expander", NULL, NULL, NULL);
1360
1361#define sas_expander_show_simple(field, name, format_string, cast) \
1362static ssize_t \
Tony Jonesee959b02008-02-22 00:13:36 +01001363show_sas_expander_##name(struct device *dev, \
1364 struct device_attribute *attr, char *buf) \
James Bottomley79cb1812006-03-13 13:50:04 -06001365{ \
Tony Jonesee959b02008-02-22 00:13:36 +01001366 struct sas_rphy *rphy = transport_class_to_rphy(dev); \
James Bottomley79cb1812006-03-13 13:50:04 -06001367 struct sas_expander_device *edev = rphy_to_expander_device(rphy); \
1368 \
1369 return snprintf(buf, 20, format_string, cast edev->field); \
1370}
1371
1372#define sas_expander_simple_attr(field, name, format_string, type) \
1373 sas_expander_show_simple(field, name, format_string, (type)) \
Tony Jonesee959b02008-02-22 00:13:36 +01001374static SAS_DEVICE_ATTR(expander, name, S_IRUGO, \
James Bottomley79cb1812006-03-13 13:50:04 -06001375 show_sas_expander_##name, NULL)
1376
1377sas_expander_simple_attr(vendor_id, vendor_id, "%s\n", char *);
1378sas_expander_simple_attr(product_id, product_id, "%s\n", char *);
1379sas_expander_simple_attr(product_rev, product_rev, "%s\n", char *);
1380sas_expander_simple_attr(component_vendor_id, component_vendor_id,
1381 "%s\n", char *);
1382sas_expander_simple_attr(component_id, component_id, "%u\n", unsigned int);
1383sas_expander_simple_attr(component_revision_id, component_revision_id, "%u\n",
1384 unsigned int);
1385sas_expander_simple_attr(level, level, "%d\n", int);
James Bottomley42ab0362006-03-04 09:10:18 -06001386
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001387static DECLARE_TRANSPORT_CLASS(sas_rphy_class,
James Bottomley2f8600d2006-03-18 15:00:50 -06001388 "sas_device", NULL, NULL, NULL);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001389
1390static int sas_rphy_match(struct attribute_container *cont, struct device *dev)
1391{
1392 struct Scsi_Host *shost;
1393 struct sas_internal *i;
1394
1395 if (!scsi_is_sas_rphy(dev))
1396 return 0;
1397 shost = dev_to_shost(dev->parent->parent);
1398
1399 if (!shost->transportt)
1400 return 0;
1401 if (shost->transportt->host_attrs.ac.class !=
1402 &sas_host_class.class)
1403 return 0;
1404
1405 i = to_sas_internal(shost->transportt);
1406 return &i->rphy_attr_cont.ac == cont;
1407}
1408
James Bottomley42ab0362006-03-04 09:10:18 -06001409static int sas_end_dev_match(struct attribute_container *cont,
1410 struct device *dev)
1411{
1412 struct Scsi_Host *shost;
1413 struct sas_internal *i;
1414 struct sas_rphy *rphy;
1415
1416 if (!scsi_is_sas_rphy(dev))
1417 return 0;
1418 shost = dev_to_shost(dev->parent->parent);
1419 rphy = dev_to_rphy(dev);
1420
1421 if (!shost->transportt)
1422 return 0;
1423 if (shost->transportt->host_attrs.ac.class !=
1424 &sas_host_class.class)
1425 return 0;
1426
1427 i = to_sas_internal(shost->transportt);
1428 return &i->end_dev_attr_cont.ac == cont &&
James Bottomley2f8600d2006-03-18 15:00:50 -06001429 rphy->identify.device_type == SAS_END_DEVICE;
James Bottomley42ab0362006-03-04 09:10:18 -06001430}
1431
James Bottomley79cb1812006-03-13 13:50:04 -06001432static int sas_expander_match(struct attribute_container *cont,
1433 struct device *dev)
1434{
1435 struct Scsi_Host *shost;
1436 struct sas_internal *i;
1437 struct sas_rphy *rphy;
1438
1439 if (!scsi_is_sas_rphy(dev))
1440 return 0;
1441 shost = dev_to_shost(dev->parent->parent);
1442 rphy = dev_to_rphy(dev);
1443
1444 if (!shost->transportt)
1445 return 0;
1446 if (shost->transportt->host_attrs.ac.class !=
1447 &sas_host_class.class)
1448 return 0;
1449
1450 i = to_sas_internal(shost->transportt);
1451 return &i->expander_attr_cont.ac == cont &&
1452 (rphy->identify.device_type == SAS_EDGE_EXPANDER_DEVICE ||
James Bottomley2f8600d2006-03-18 15:00:50 -06001453 rphy->identify.device_type == SAS_FANOUT_EXPANDER_DEVICE);
James Bottomley79cb1812006-03-13 13:50:04 -06001454}
1455
James Bottomley2f8600d2006-03-18 15:00:50 -06001456static void sas_expander_release(struct device *dev)
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001457{
1458 struct sas_rphy *rphy = dev_to_rphy(dev);
James Bottomley2f8600d2006-03-18 15:00:50 -06001459 struct sas_expander_device *edev = rphy_to_expander_device(rphy);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001460
FUJITA Tomonori93c20a52008-04-19 00:43:15 +09001461 if (rphy->q)
1462 blk_cleanup_queue(rphy->q);
1463
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001464 put_device(dev->parent);
James Bottomley2f8600d2006-03-18 15:00:50 -06001465 kfree(edev);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001466}
1467
James Bottomley2f8600d2006-03-18 15:00:50 -06001468static void sas_end_device_release(struct device *dev)
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001469{
James Bottomley2f8600d2006-03-18 15:00:50 -06001470 struct sas_rphy *rphy = dev_to_rphy(dev);
1471 struct sas_end_device *edev = rphy_to_end_device(rphy);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001472
FUJITA Tomonori93c20a52008-04-19 00:43:15 +09001473 if (rphy->q)
1474 blk_cleanup_queue(rphy->q);
1475
James Bottomley2f8600d2006-03-18 15:00:50 -06001476 put_device(dev->parent);
1477 kfree(edev);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001478}
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001479
1480/**
James Bottomleyc5943d32006-06-12 09:09:18 -05001481 * sas_rphy_initialize - common rphy intialization
1482 * @rphy: rphy to initialise
1483 *
1484 * Used by both sas_end_device_alloc() and sas_expander_alloc() to
1485 * initialise the common rphy component of each.
1486 */
1487static void sas_rphy_initialize(struct sas_rphy *rphy)
1488{
1489 INIT_LIST_HEAD(&rphy->list);
1490}
1491
1492/**
James Bottomley42ab0362006-03-04 09:10:18 -06001493 * sas_end_device_alloc - allocate an rphy for an end device
Rob Landleyeb448202007-11-03 13:30:39 -05001494 * @parent: which port
James Bottomley42ab0362006-03-04 09:10:18 -06001495 *
1496 * Allocates an SAS remote PHY structure, connected to @parent.
1497 *
1498 * Returns:
1499 * SAS PHY allocated or %NULL if the allocation failed.
1500 */
James Bottomley65c92b02006-06-28 12:22:50 -04001501struct sas_rphy *sas_end_device_alloc(struct sas_port *parent)
James Bottomley42ab0362006-03-04 09:10:18 -06001502{
1503 struct Scsi_Host *shost = dev_to_shost(&parent->dev);
1504 struct sas_end_device *rdev;
1505
1506 rdev = kzalloc(sizeof(*rdev), GFP_KERNEL);
1507 if (!rdev) {
James Bottomley42ab0362006-03-04 09:10:18 -06001508 return NULL;
1509 }
1510
1511 device_initialize(&rdev->rphy.dev);
1512 rdev->rphy.dev.parent = get_device(&parent->dev);
James Bottomley2f8600d2006-03-18 15:00:50 -06001513 rdev->rphy.dev.release = sas_end_device_release;
James Bottomley65c92b02006-06-28 12:22:50 -04001514 if (scsi_is_sas_expander_device(parent->dev.parent)) {
1515 struct sas_rphy *rphy = dev_to_rphy(parent->dev.parent);
Kay Sievers71610f52008-12-03 22:41:36 +01001516 dev_set_name(&rdev->rphy.dev, "end_device-%d:%d:%d",
1517 shost->host_no, rphy->scsi_target_id,
1518 parent->port_identifier);
James Bottomley65c92b02006-06-28 12:22:50 -04001519 } else
Kay Sievers71610f52008-12-03 22:41:36 +01001520 dev_set_name(&rdev->rphy.dev, "end_device-%d:%d",
1521 shost->host_no, parent->port_identifier);
James Bottomley42ab0362006-03-04 09:10:18 -06001522 rdev->rphy.identify.device_type = SAS_END_DEVICE;
James Bottomleyc5943d32006-06-12 09:09:18 -05001523 sas_rphy_initialize(&rdev->rphy);
James Bottomley42ab0362006-03-04 09:10:18 -06001524 transport_setup_device(&rdev->rphy.dev);
1525
1526 return &rdev->rphy;
1527}
1528EXPORT_SYMBOL(sas_end_device_alloc);
1529
James Bottomley79cb1812006-03-13 13:50:04 -06001530/**
1531 * sas_expander_alloc - allocate an rphy for an end device
Rob Landleyeb448202007-11-03 13:30:39 -05001532 * @parent: which port
1533 * @type: SAS_EDGE_EXPANDER_DEVICE or SAS_FANOUT_EXPANDER_DEVICE
James Bottomley79cb1812006-03-13 13:50:04 -06001534 *
1535 * Allocates an SAS remote PHY structure, connected to @parent.
1536 *
1537 * Returns:
1538 * SAS PHY allocated or %NULL if the allocation failed.
1539 */
James Bottomley65c92b02006-06-28 12:22:50 -04001540struct sas_rphy *sas_expander_alloc(struct sas_port *parent,
James Bottomley79cb1812006-03-13 13:50:04 -06001541 enum sas_device_type type)
1542{
1543 struct Scsi_Host *shost = dev_to_shost(&parent->dev);
1544 struct sas_expander_device *rdev;
1545 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
1546
1547 BUG_ON(type != SAS_EDGE_EXPANDER_DEVICE &&
1548 type != SAS_FANOUT_EXPANDER_DEVICE);
1549
1550 rdev = kzalloc(sizeof(*rdev), GFP_KERNEL);
1551 if (!rdev) {
James Bottomley79cb1812006-03-13 13:50:04 -06001552 return NULL;
1553 }
1554
1555 device_initialize(&rdev->rphy.dev);
1556 rdev->rphy.dev.parent = get_device(&parent->dev);
James Bottomley2f8600d2006-03-18 15:00:50 -06001557 rdev->rphy.dev.release = sas_expander_release;
James Bottomley79cb1812006-03-13 13:50:04 -06001558 mutex_lock(&sas_host->lock);
1559 rdev->rphy.scsi_target_id = sas_host->next_expander_id++;
1560 mutex_unlock(&sas_host->lock);
Kay Sievers71610f52008-12-03 22:41:36 +01001561 dev_set_name(&rdev->rphy.dev, "expander-%d:%d",
1562 shost->host_no, rdev->rphy.scsi_target_id);
James Bottomley79cb1812006-03-13 13:50:04 -06001563 rdev->rphy.identify.device_type = type;
James Bottomleyc5943d32006-06-12 09:09:18 -05001564 sas_rphy_initialize(&rdev->rphy);
James Bottomley79cb1812006-03-13 13:50:04 -06001565 transport_setup_device(&rdev->rphy.dev);
1566
1567 return &rdev->rphy;
1568}
1569EXPORT_SYMBOL(sas_expander_alloc);
James Bottomley42ab0362006-03-04 09:10:18 -06001570
1571/**
Rob Landleyeb448202007-11-03 13:30:39 -05001572 * sas_rphy_add - add a SAS remote PHY to the device hierarchy
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001573 * @rphy: The remote PHY to be added
1574 *
1575 * Publishes a SAS remote PHY to the rest of the system.
1576 */
1577int sas_rphy_add(struct sas_rphy *rphy)
1578{
James Bottomley65c92b02006-06-28 12:22:50 -04001579 struct sas_port *parent = dev_to_sas_port(rphy->dev.parent);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001580 struct Scsi_Host *shost = dev_to_shost(parent->dev.parent);
1581 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
1582 struct sas_identify *identify = &rphy->identify;
1583 int error;
1584
1585 if (parent->rphy)
1586 return -ENXIO;
1587 parent->rphy = rphy;
1588
1589 error = device_add(&rphy->dev);
1590 if (error)
1591 return error;
1592 transport_add_device(&rphy->dev);
1593 transport_configure_device(&rphy->dev);
James Bottomley39dca552007-07-20 18:22:17 -05001594 if (sas_bsg_initialize(shost, rphy))
Kay Sievers71610f52008-12-03 22:41:36 +01001595 printk("fail to a bsg device %s\n", dev_name(&rphy->dev));
James Bottomley39dca552007-07-20 18:22:17 -05001596
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001597
Christoph Hellwige02f3f52006-01-13 19:04:00 +01001598 mutex_lock(&sas_host->lock);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001599 list_add_tail(&rphy->list, &sas_host->rphy_list);
1600 if (identify->device_type == SAS_END_DEVICE &&
1601 (identify->target_port_protocols &
1602 (SAS_PROTOCOL_SSP|SAS_PROTOCOL_STP|SAS_PROTOCOL_SATA)))
1603 rphy->scsi_target_id = sas_host->next_target_id++;
James Bottomley7676f832006-04-14 09:47:59 -05001604 else if (identify->device_type == SAS_END_DEVICE)
1605 rphy->scsi_target_id = -1;
Christoph Hellwige02f3f52006-01-13 19:04:00 +01001606 mutex_unlock(&sas_host->lock);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001607
James Bottomley79cb1812006-03-13 13:50:04 -06001608 if (identify->device_type == SAS_END_DEVICE &&
1609 rphy->scsi_target_id != -1) {
Dan Williams2fc62e22011-09-20 15:10:19 -07001610 int lun;
1611
1612 if (identify->target_port_protocols & SAS_PROTOCOL_SSP)
1613 lun = SCAN_WILD_CARD;
1614 else
1615 lun = 0;
1616
1617 scsi_scan_target(&rphy->dev, 0, rphy->scsi_target_id, lun, 0);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001618 }
1619
1620 return 0;
1621}
1622EXPORT_SYMBOL(sas_rphy_add);
1623
1624/**
Rob Landleyeb448202007-11-03 13:30:39 -05001625 * sas_rphy_free - free a SAS remote PHY
1626 * @rphy: SAS remote PHY to free
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001627 *
1628 * Frees the specified SAS remote PHY.
1629 *
1630 * Note:
1631 * This function must only be called on a remote
André Goddard Rosaaf901ca2009-11-14 13:09:05 -02001632 * PHY that has not successfully been added using
Darrick J. Wong6f63caa2007-01-26 14:08:43 -08001633 * sas_rphy_add() (or has been sas_rphy_remove()'d)
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001634 */
1635void sas_rphy_free(struct sas_rphy *rphy)
1636{
Mike Anderson92aab642006-03-27 09:37:28 -08001637 struct device *dev = &rphy->dev;
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001638 struct Scsi_Host *shost = dev_to_shost(rphy->dev.parent->parent);
1639 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
1640
Christoph Hellwige02f3f52006-01-13 19:04:00 +01001641 mutex_lock(&sas_host->lock);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001642 list_del(&rphy->list);
Christoph Hellwige02f3f52006-01-13 19:04:00 +01001643 mutex_unlock(&sas_host->lock);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001644
Mike Anderson92aab642006-03-27 09:37:28 -08001645 transport_destroy_device(dev);
James Bottomley2f8600d2006-03-18 15:00:50 -06001646
Mike Anderson92aab642006-03-27 09:37:28 -08001647 put_device(dev);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001648}
1649EXPORT_SYMBOL(sas_rphy_free);
1650
1651/**
Rob Landleyeb448202007-11-03 13:30:39 -05001652 * sas_rphy_delete - remove and free SAS remote PHY
Darrick J. Wong6f63caa2007-01-26 14:08:43 -08001653 * @rphy: SAS remote PHY to remove and free
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001654 *
Darrick J. Wong6f63caa2007-01-26 14:08:43 -08001655 * Removes the specified SAS remote PHY and frees it.
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001656 */
1657void
1658sas_rphy_delete(struct sas_rphy *rphy)
1659{
Darrick J. Wong6f63caa2007-01-26 14:08:43 -08001660 sas_rphy_remove(rphy);
1661 sas_rphy_free(rphy);
1662}
1663EXPORT_SYMBOL(sas_rphy_delete);
1664
1665/**
Dan Williams87c83312011-11-17 17:59:51 -08001666 * sas_rphy_unlink - unlink SAS remote PHY
1667 * @rphy: SAS remote phy to unlink from its parent port
1668 *
1669 * Removes port reference to an rphy
1670 */
1671void sas_rphy_unlink(struct sas_rphy *rphy)
1672{
1673 struct sas_port *parent = dev_to_sas_port(rphy->dev.parent);
1674
1675 parent->rphy = NULL;
1676}
1677EXPORT_SYMBOL(sas_rphy_unlink);
1678
1679/**
Rob Landleyeb448202007-11-03 13:30:39 -05001680 * sas_rphy_remove - remove SAS remote PHY
Darrick J. Wong6f63caa2007-01-26 14:08:43 -08001681 * @rphy: SAS remote phy to remove
1682 *
1683 * Removes the specified SAS remote PHY.
1684 */
1685void
1686sas_rphy_remove(struct sas_rphy *rphy)
1687{
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001688 struct device *dev = &rphy->dev;
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001689
Christoph Hellwigd4054232006-01-04 13:45:20 +01001690 switch (rphy->identify.device_type) {
1691 case SAS_END_DEVICE:
1692 scsi_remove_target(dev);
1693 break;
1694 case SAS_EDGE_EXPANDER_DEVICE:
1695 case SAS_FANOUT_EXPANDER_DEVICE:
James Bottomley65c92b02006-06-28 12:22:50 -04001696 sas_remove_children(dev);
Christoph Hellwigd4054232006-01-04 13:45:20 +01001697 break;
1698 default:
1699 break;
1700 }
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001701
Dan Williams87c83312011-11-17 17:59:51 -08001702 sas_rphy_unlink(rphy);
Joe Lawrence6aa6caf2014-05-22 17:30:54 -04001703 sas_bsg_remove(NULL, rphy);
Christoph Hellwigfe8b2302005-09-25 23:10:33 +02001704 transport_remove_device(dev);
1705 device_del(dev);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001706}
Darrick J. Wong6f63caa2007-01-26 14:08:43 -08001707EXPORT_SYMBOL(sas_rphy_remove);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001708
1709/**
Rob Landleyeb448202007-11-03 13:30:39 -05001710 * scsi_is_sas_rphy - check if a struct device represents a SAS remote PHY
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001711 * @dev: device to check
1712 *
1713 * Returns:
1714 * %1 if the device represents a SAS remote PHY, %0 else
1715 */
1716int scsi_is_sas_rphy(const struct device *dev)
1717{
James Bottomley2f8600d2006-03-18 15:00:50 -06001718 return dev->release == sas_end_device_release ||
1719 dev->release == sas_expander_release;
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001720}
1721EXPORT_SYMBOL(scsi_is_sas_rphy);
1722
1723
1724/*
1725 * SCSI scan helper
1726 */
1727
Christoph Hellwige02f3f52006-01-13 19:04:00 +01001728static int sas_user_scan(struct Scsi_Host *shost, uint channel,
Hannes Reinecke9cb78c12014-06-25 15:27:36 +02001729 uint id, u64 lun)
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001730{
1731 struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
1732 struct sas_rphy *rphy;
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001733
Christoph Hellwige02f3f52006-01-13 19:04:00 +01001734 mutex_lock(&sas_host->lock);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001735 list_for_each_entry(rphy, &sas_host->rphy_list, list) {
James Bottomley6d99a3f2006-05-19 10:49:37 -05001736 if (rphy->identify.device_type != SAS_END_DEVICE ||
1737 rphy->scsi_target_id == -1)
Christoph Hellwige02f3f52006-01-13 19:04:00 +01001738 continue;
1739
James Bottomleye8bf3942006-07-11 17:49:34 -04001740 if ((channel == SCAN_WILD_CARD || channel == 0) &&
Christoph Hellwige02f3f52006-01-13 19:04:00 +01001741 (id == SCAN_WILD_CARD || id == rphy->scsi_target_id)) {
James Bottomleye8bf3942006-07-11 17:49:34 -04001742 scsi_scan_target(&rphy->dev, 0,
Christoph Hellwige02f3f52006-01-13 19:04:00 +01001743 rphy->scsi_target_id, lun, 1);
1744 }
1745 }
1746 mutex_unlock(&sas_host->lock);
1747
1748 return 0;
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001749}
1750
1751
1752/*
1753 * Setup / Teardown code
1754 */
1755
James Bottomleyd24e1ee2006-09-06 19:25:22 -05001756#define SETUP_TEMPLATE(attrb, field, perm, test) \
Tony Jonesee959b02008-02-22 00:13:36 +01001757 i->private_##attrb[count] = dev_attr_##field; \
James Bottomley42ab0362006-03-04 09:10:18 -06001758 i->private_##attrb[count].attr.mode = perm; \
James Bottomley42ab0362006-03-04 09:10:18 -06001759 i->attrb[count] = &i->private_##attrb[count]; \
1760 if (test) \
1761 count++
1762
James Bottomleyd24e1ee2006-09-06 19:25:22 -05001763#define SETUP_TEMPLATE_RW(attrb, field, perm, test, ro_test, ro_perm) \
Tony Jonesee959b02008-02-22 00:13:36 +01001764 i->private_##attrb[count] = dev_attr_##field; \
James Bottomleyd24e1ee2006-09-06 19:25:22 -05001765 i->private_##attrb[count].attr.mode = perm; \
1766 if (ro_test) { \
1767 i->private_##attrb[count].attr.mode = ro_perm; \
1768 i->private_##attrb[count].store = NULL; \
1769 } \
1770 i->attrb[count] = &i->private_##attrb[count]; \
1771 if (test) \
1772 count++
James Bottomley42ab0362006-03-04 09:10:18 -06001773
1774#define SETUP_RPORT_ATTRIBUTE(field) \
1775 SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, 1)
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001776
James Bottomleydd9fbb522006-03-02 16:01:31 -06001777#define SETUP_OPTIONAL_RPORT_ATTRIBUTE(field, func) \
James Bottomley42ab0362006-03-04 09:10:18 -06001778 SETUP_TEMPLATE(rphy_attrs, field, S_IRUGO, i->f->func)
James Bottomleydd9fbb522006-03-02 16:01:31 -06001779
James Bottomley65c92b02006-06-28 12:22:50 -04001780#define SETUP_PHY_ATTRIBUTE(field) \
James Bottomley42ab0362006-03-04 09:10:18 -06001781 SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, 1)
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001782
James Bottomleyd24e1ee2006-09-06 19:25:22 -05001783#define SETUP_PHY_ATTRIBUTE_RW(field) \
1784 SETUP_TEMPLATE_RW(phy_attrs, field, S_IRUGO | S_IWUSR, 1, \
1785 !i->f->set_phy_speed, S_IRUGO)
1786
Darrick J. Wongacbf1672007-01-11 14:14:57 -08001787#define SETUP_OPTIONAL_PHY_ATTRIBUTE_RW(field, func) \
1788 SETUP_TEMPLATE_RW(phy_attrs, field, S_IRUGO | S_IWUSR, 1, \
1789 !i->f->func, S_IRUGO)
1790
James Bottomley65c92b02006-06-28 12:22:50 -04001791#define SETUP_PORT_ATTRIBUTE(field) \
1792 SETUP_TEMPLATE(port_attrs, field, S_IRUGO, 1)
1793
1794#define SETUP_OPTIONAL_PHY_ATTRIBUTE(field, func) \
James Bottomley42ab0362006-03-04 09:10:18 -06001795 SETUP_TEMPLATE(phy_attrs, field, S_IRUGO, i->f->func)
James Bottomleydd9fbb522006-03-02 16:01:31 -06001796
James Bottomley65c92b02006-06-28 12:22:50 -04001797#define SETUP_PHY_ATTRIBUTE_WRONLY(field) \
Darrick J. Wongfe3b5bf2007-01-11 14:15:35 -08001798 SETUP_TEMPLATE(phy_attrs, field, S_IWUSR, 1)
Christoph Hellwig07ba3a92005-10-19 20:01:31 +02001799
James Bottomley65c92b02006-06-28 12:22:50 -04001800#define SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(field, func) \
Darrick J. Wongfe3b5bf2007-01-11 14:15:35 -08001801 SETUP_TEMPLATE(phy_attrs, field, S_IWUSR, i->f->func)
James Bottomleydd9fbb522006-03-02 16:01:31 -06001802
James Bottomley42ab0362006-03-04 09:10:18 -06001803#define SETUP_END_DEV_ATTRIBUTE(field) \
1804 SETUP_TEMPLATE(end_dev_attrs, field, S_IRUGO, 1)
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001805
James Bottomley79cb1812006-03-13 13:50:04 -06001806#define SETUP_EXPANDER_ATTRIBUTE(field) \
1807 SETUP_TEMPLATE(expander_attrs, expander_##field, S_IRUGO, 1)
1808
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001809/**
Rob Landleyeb448202007-11-03 13:30:39 -05001810 * sas_attach_transport - instantiate SAS transport template
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001811 * @ft: SAS transport class function template
1812 */
1813struct scsi_transport_template *
1814sas_attach_transport(struct sas_function_template *ft)
1815{
1816 struct sas_internal *i;
1817 int count;
1818
Jes Sorensen24669f752006-01-16 10:31:18 -05001819 i = kzalloc(sizeof(struct sas_internal), GFP_KERNEL);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001820 if (!i)
1821 return NULL;
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001822
Christoph Hellwige02f3f52006-01-13 19:04:00 +01001823 i->t.user_scan = sas_user_scan;
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001824
1825 i->t.host_attrs.ac.attrs = &i->host_attrs[0];
1826 i->t.host_attrs.ac.class = &sas_host_class.class;
1827 i->t.host_attrs.ac.match = sas_host_match;
1828 transport_container_register(&i->t.host_attrs);
1829 i->t.host_size = sizeof(struct sas_host_attrs);
1830
1831 i->phy_attr_cont.ac.class = &sas_phy_class.class;
1832 i->phy_attr_cont.ac.attrs = &i->phy_attrs[0];
1833 i->phy_attr_cont.ac.match = sas_phy_match;
1834 transport_container_register(&i->phy_attr_cont);
1835
James Bottomley65c92b02006-06-28 12:22:50 -04001836 i->port_attr_cont.ac.class = &sas_port_class.class;
1837 i->port_attr_cont.ac.attrs = &i->port_attrs[0];
1838 i->port_attr_cont.ac.match = sas_port_match;
1839 transport_container_register(&i->port_attr_cont);
1840
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001841 i->rphy_attr_cont.ac.class = &sas_rphy_class.class;
1842 i->rphy_attr_cont.ac.attrs = &i->rphy_attrs[0];
1843 i->rphy_attr_cont.ac.match = sas_rphy_match;
1844 transport_container_register(&i->rphy_attr_cont);
1845
James Bottomley42ab0362006-03-04 09:10:18 -06001846 i->end_dev_attr_cont.ac.class = &sas_end_dev_class.class;
1847 i->end_dev_attr_cont.ac.attrs = &i->end_dev_attrs[0];
1848 i->end_dev_attr_cont.ac.match = sas_end_dev_match;
1849 transport_container_register(&i->end_dev_attr_cont);
1850
James Bottomley79cb1812006-03-13 13:50:04 -06001851 i->expander_attr_cont.ac.class = &sas_expander_class.class;
1852 i->expander_attr_cont.ac.attrs = &i->expander_attrs[0];
1853 i->expander_attr_cont.ac.match = sas_expander_match;
1854 transport_container_register(&i->expander_attr_cont);
1855
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001856 i->f = ft;
1857
1858 count = 0;
James Bottomley65c92b02006-06-28 12:22:50 -04001859 SETUP_PHY_ATTRIBUTE(initiator_port_protocols);
1860 SETUP_PHY_ATTRIBUTE(target_port_protocols);
1861 SETUP_PHY_ATTRIBUTE(device_type);
1862 SETUP_PHY_ATTRIBUTE(sas_address);
1863 SETUP_PHY_ATTRIBUTE(phy_identifier);
1864 //SETUP_PHY_ATTRIBUTE(port_identifier);
1865 SETUP_PHY_ATTRIBUTE(negotiated_linkrate);
1866 SETUP_PHY_ATTRIBUTE(minimum_linkrate_hw);
James Bottomleyd24e1ee2006-09-06 19:25:22 -05001867 SETUP_PHY_ATTRIBUTE_RW(minimum_linkrate);
James Bottomley65c92b02006-06-28 12:22:50 -04001868 SETUP_PHY_ATTRIBUTE(maximum_linkrate_hw);
James Bottomleyd24e1ee2006-09-06 19:25:22 -05001869 SETUP_PHY_ATTRIBUTE_RW(maximum_linkrate);
Christoph Hellwigc3ee74c2005-09-19 21:59:42 +02001870
James Bottomley65c92b02006-06-28 12:22:50 -04001871 SETUP_PHY_ATTRIBUTE(invalid_dword_count);
1872 SETUP_PHY_ATTRIBUTE(running_disparity_error_count);
1873 SETUP_PHY_ATTRIBUTE(loss_of_dword_sync_count);
1874 SETUP_PHY_ATTRIBUTE(phy_reset_problem_count);
1875 SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(link_reset, phy_reset);
1876 SETUP_OPTIONAL_PHY_ATTRIBUTE_WRONLY(hard_reset, phy_reset);
Darrick J. Wongacbf1672007-01-11 14:14:57 -08001877 SETUP_OPTIONAL_PHY_ATTRIBUTE_RW(enable, phy_enable);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001878 i->phy_attrs[count] = NULL;
1879
1880 count = 0;
James Bottomley65c92b02006-06-28 12:22:50 -04001881 SETUP_PORT_ATTRIBUTE(num_phys);
1882 i->port_attrs[count] = NULL;
1883
1884 count = 0;
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001885 SETUP_RPORT_ATTRIBUTE(rphy_initiator_port_protocols);
1886 SETUP_RPORT_ATTRIBUTE(rphy_target_port_protocols);
1887 SETUP_RPORT_ATTRIBUTE(rphy_device_type);
1888 SETUP_RPORT_ATTRIBUTE(rphy_sas_address);
1889 SETUP_RPORT_ATTRIBUTE(rphy_phy_identifier);
Hannes Reineckecdc43ae2016-03-14 10:43:08 +01001890 SETUP_RPORT_ATTRIBUTE(rphy_scsi_target_id);
James Bottomleydd9fbb522006-03-02 16:01:31 -06001891 SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_enclosure_identifier,
1892 get_enclosure_identifier);
1893 SETUP_OPTIONAL_RPORT_ATTRIBUTE(rphy_bay_identifier,
1894 get_bay_identifier);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001895 i->rphy_attrs[count] = NULL;
1896
James Bottomley42ab0362006-03-04 09:10:18 -06001897 count = 0;
1898 SETUP_END_DEV_ATTRIBUTE(end_dev_ready_led_meaning);
1899 SETUP_END_DEV_ATTRIBUTE(end_dev_I_T_nexus_loss_timeout);
1900 SETUP_END_DEV_ATTRIBUTE(end_dev_initiator_response_timeout);
James Bottomley0f880092010-01-18 10:14:51 -06001901 SETUP_END_DEV_ATTRIBUTE(end_dev_tlr_supported);
1902 SETUP_END_DEV_ATTRIBUTE(end_dev_tlr_enabled);
James Bottomley42ab0362006-03-04 09:10:18 -06001903 i->end_dev_attrs[count] = NULL;
1904
James Bottomley79cb1812006-03-13 13:50:04 -06001905 count = 0;
1906 SETUP_EXPANDER_ATTRIBUTE(vendor_id);
1907 SETUP_EXPANDER_ATTRIBUTE(product_id);
1908 SETUP_EXPANDER_ATTRIBUTE(product_rev);
1909 SETUP_EXPANDER_ATTRIBUTE(component_vendor_id);
1910 SETUP_EXPANDER_ATTRIBUTE(component_id);
1911 SETUP_EXPANDER_ATTRIBUTE(component_revision_id);
1912 SETUP_EXPANDER_ATTRIBUTE(level);
1913 i->expander_attrs[count] = NULL;
1914
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001915 return &i->t;
1916}
1917EXPORT_SYMBOL(sas_attach_transport);
1918
1919/**
Rob Landleyeb448202007-11-03 13:30:39 -05001920 * sas_release_transport - release SAS transport template instance
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001921 * @t: transport template instance
1922 */
1923void sas_release_transport(struct scsi_transport_template *t)
1924{
1925 struct sas_internal *i = to_sas_internal(t);
1926
1927 transport_container_unregister(&i->t.host_attrs);
1928 transport_container_unregister(&i->phy_attr_cont);
James Bottomley65c92b02006-06-28 12:22:50 -04001929 transport_container_unregister(&i->port_attr_cont);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001930 transport_container_unregister(&i->rphy_attr_cont);
James Bottomleydb82f842006-03-09 22:06:36 -05001931 transport_container_unregister(&i->end_dev_attr_cont);
James Bottomley79cb1812006-03-13 13:50:04 -06001932 transport_container_unregister(&i->expander_attr_cont);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001933
1934 kfree(i);
1935}
1936EXPORT_SYMBOL(sas_release_transport);
1937
1938static __init int sas_transport_init(void)
1939{
1940 int error;
1941
1942 error = transport_class_register(&sas_host_class);
1943 if (error)
1944 goto out;
1945 error = transport_class_register(&sas_phy_class);
1946 if (error)
1947 goto out_unregister_transport;
James Bottomley65c92b02006-06-28 12:22:50 -04001948 error = transport_class_register(&sas_port_class);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001949 if (error)
1950 goto out_unregister_phy;
James Bottomley65c92b02006-06-28 12:22:50 -04001951 error = transport_class_register(&sas_rphy_class);
1952 if (error)
1953 goto out_unregister_port;
James Bottomley42ab0362006-03-04 09:10:18 -06001954 error = transport_class_register(&sas_end_dev_class);
1955 if (error)
1956 goto out_unregister_rphy;
James Bottomley79cb1812006-03-13 13:50:04 -06001957 error = transport_class_register(&sas_expander_class);
1958 if (error)
1959 goto out_unregister_end_dev;
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001960
1961 return 0;
1962
James Bottomley79cb1812006-03-13 13:50:04 -06001963 out_unregister_end_dev:
1964 transport_class_unregister(&sas_end_dev_class);
James Bottomley42ab0362006-03-04 09:10:18 -06001965 out_unregister_rphy:
1966 transport_class_unregister(&sas_rphy_class);
James Bottomley65c92b02006-06-28 12:22:50 -04001967 out_unregister_port:
1968 transport_class_unregister(&sas_port_class);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001969 out_unregister_phy:
1970 transport_class_unregister(&sas_phy_class);
1971 out_unregister_transport:
1972 transport_class_unregister(&sas_host_class);
1973 out:
1974 return error;
1975
1976}
1977
1978static void __exit sas_transport_exit(void)
1979{
1980 transport_class_unregister(&sas_host_class);
1981 transport_class_unregister(&sas_phy_class);
James Bottomley65c92b02006-06-28 12:22:50 -04001982 transport_class_unregister(&sas_port_class);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001983 transport_class_unregister(&sas_rphy_class);
James Bottomley42ab0362006-03-04 09:10:18 -06001984 transport_class_unregister(&sas_end_dev_class);
James Bottomley79cb1812006-03-13 13:50:04 -06001985 transport_class_unregister(&sas_expander_class);
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001986}
1987
1988MODULE_AUTHOR("Christoph Hellwig");
Alexis Bruemmer86b9c4c2007-01-16 15:36:12 -08001989MODULE_DESCRIPTION("SAS Transport Attributes");
Christoph Hellwigc7ebbbc2005-09-09 16:22:50 +02001990MODULE_LICENSE("GPL");
1991
1992module_init(sas_transport_init);
1993module_exit(sas_transport_exit);