Commit | Line | Data |
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2908d778 JB |
1 | /* |
2 | * Serial Attached SCSI (SAS) Discover process | |
3 | * | |
4 | * Copyright (C) 2005 Adaptec, Inc. All rights reserved. | |
5 | * Copyright (C) 2005 Luben Tuikov <luben_tuikov@adaptec.com> | |
6 | * | |
7 | * This file is licensed under GPLv2. | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or | |
10 | * modify it under the terms of the GNU General Public License as | |
11 | * published by the Free Software Foundation; either version 2 of the | |
12 | * License, or (at your option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, but | |
15 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
17 | * General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
22 | * | |
23 | */ | |
24 | ||
2908d778 | 25 | #include <linux/scatterlist.h> |
5a0e3ad6 | 26 | #include <linux/slab.h> |
2908d778 JB |
27 | #include <scsi/scsi_host.h> |
28 | #include <scsi/scsi_eh.h> | |
29 | #include "sas_internal.h" | |
30 | ||
31 | #include <scsi/scsi_transport.h> | |
32 | #include <scsi/scsi_transport_sas.h> | |
756f173f | 33 | #include <scsi/sas_ata.h> |
2908d778 JB |
34 | #include "../scsi_sas_internal.h" |
35 | ||
36 | /* ---------- Basic task processing for discovery purposes ---------- */ | |
37 | ||
38 | void sas_init_dev(struct domain_device *dev) | |
39 | { | |
89d3cf6a JS |
40 | switch (dev->dev_type) { |
41 | case SAS_END_DEV: | |
5db45bdc | 42 | INIT_LIST_HEAD(&dev->ssp_dev.eh_list_node); |
89d3cf6a JS |
43 | break; |
44 | case EDGE_DEV: | |
45 | case FANOUT_DEV: | |
46 | INIT_LIST_HEAD(&dev->ex_dev.children); | |
47 | mutex_init(&dev->ex_dev.cmd_mutex); | |
48 | break; | |
89d3cf6a JS |
49 | default: |
50 | break; | |
51 | } | |
2908d778 JB |
52 | } |
53 | ||
2908d778 JB |
54 | /* ---------- Domain device discovery ---------- */ |
55 | ||
56 | /** | |
57 | * sas_get_port_device -- Discover devices which caused port creation | |
58 | * @port: pointer to struct sas_port of interest | |
59 | * | |
60 | * Devices directly attached to a HA port, have no parent. This is | |
61 | * how we know they are (domain) "root" devices. All other devices | |
62 | * do, and should have their "parent" pointer set appropriately as | |
63 | * soon as a child device is discovered. | |
64 | */ | |
65 | static int sas_get_port_device(struct asd_sas_port *port) | |
66 | { | |
2908d778 JB |
67 | struct asd_sas_phy *phy; |
68 | struct sas_rphy *rphy; | |
69 | struct domain_device *dev; | |
b2024459 | 70 | int rc = -ENODEV; |
2908d778 | 71 | |
735f7d2f | 72 | dev = sas_alloc_device(); |
2908d778 JB |
73 | if (!dev) |
74 | return -ENOMEM; | |
75 | ||
899fcf40 | 76 | spin_lock_irq(&port->phy_list_lock); |
2908d778 | 77 | if (list_empty(&port->phy_list)) { |
899fcf40 | 78 | spin_unlock_irq(&port->phy_list_lock); |
735f7d2f | 79 | sas_put_device(dev); |
2908d778 JB |
80 | return -ENODEV; |
81 | } | |
82 | phy = container_of(port->phy_list.next, struct asd_sas_phy, port_phy_el); | |
83 | spin_lock(&phy->frame_rcvd_lock); | |
84 | memcpy(dev->frame_rcvd, phy->frame_rcvd, min(sizeof(dev->frame_rcvd), | |
85 | (size_t)phy->frame_rcvd_size)); | |
86 | spin_unlock(&phy->frame_rcvd_lock); | |
899fcf40 | 87 | spin_unlock_irq(&port->phy_list_lock); |
2908d778 JB |
88 | |
89 | if (dev->frame_rcvd[0] == 0x34 && port->oob_mode == SATA_OOB_MODE) { | |
90 | struct dev_to_host_fis *fis = | |
91 | (struct dev_to_host_fis *) dev->frame_rcvd; | |
92 | if (fis->interrupt_reason == 1 && fis->lbal == 1 && | |
93 | fis->byte_count_low==0x69 && fis->byte_count_high == 0x96 | |
94 | && (fis->device & ~0x10) == 0) | |
95 | dev->dev_type = SATA_PM; | |
96 | else | |
97 | dev->dev_type = SATA_DEV; | |
5929faf3 | 98 | dev->tproto = SAS_PROTOCOL_SATA; |
2908d778 JB |
99 | } else { |
100 | struct sas_identify_frame *id = | |
101 | (struct sas_identify_frame *) dev->frame_rcvd; | |
102 | dev->dev_type = id->dev_type; | |
103 | dev->iproto = id->initiator_bits; | |
104 | dev->tproto = id->target_bits; | |
105 | } | |
106 | ||
107 | sas_init_dev(dev); | |
108 | ||
b2024459 | 109 | dev->port = port; |
2908d778 | 110 | switch (dev->dev_type) { |
fa1c1e8f | 111 | case SATA_DEV: |
b2024459 DW |
112 | rc = sas_ata_init(dev); |
113 | if (rc) { | |
114 | rphy = NULL; | |
115 | break; | |
116 | } | |
117 | /* fall through */ | |
118 | case SAS_END_DEV: | |
2908d778 JB |
119 | rphy = sas_end_device_alloc(port->port); |
120 | break; | |
121 | case EDGE_DEV: | |
122 | rphy = sas_expander_alloc(port->port, | |
123 | SAS_EDGE_EXPANDER_DEVICE); | |
124 | break; | |
125 | case FANOUT_DEV: | |
126 | rphy = sas_expander_alloc(port->port, | |
127 | SAS_FANOUT_EXPANDER_DEVICE); | |
128 | break; | |
2908d778 JB |
129 | default: |
130 | printk("ERROR: Unidentified device type %d\n", dev->dev_type); | |
131 | rphy = NULL; | |
132 | break; | |
133 | } | |
134 | ||
135 | if (!rphy) { | |
735f7d2f | 136 | sas_put_device(dev); |
b2024459 | 137 | return rc; |
2908d778 | 138 | } |
899fcf40 | 139 | |
2908d778 JB |
140 | rphy->identify.phy_identifier = phy->phy->identify.phy_identifier; |
141 | memcpy(dev->sas_addr, port->attached_sas_addr, SAS_ADDR_SIZE); | |
142 | sas_fill_in_rphy(dev, rphy); | |
143 | sas_hash_addr(dev->hashed_sas_addr, dev->sas_addr); | |
144 | port->port_dev = dev; | |
2908d778 JB |
145 | dev->linkrate = port->linkrate; |
146 | dev->min_linkrate = port->linkrate; | |
147 | dev->max_linkrate = port->linkrate; | |
148 | dev->pathways = port->num_phys; | |
149 | memset(port->disc.fanout_sas_addr, 0, SAS_ADDR_SIZE); | |
150 | memset(port->disc.eeds_a, 0, SAS_ADDR_SIZE); | |
151 | memset(port->disc.eeds_b, 0, SAS_ADDR_SIZE); | |
152 | port->disc.max_level = 0; | |
f41a0c44 | 153 | sas_device_set_phy(dev, port->port); |
2908d778 JB |
154 | |
155 | dev->rphy = rphy; | |
9487669f | 156 | get_device(&dev->rphy->dev); |
87c8331f | 157 | |
92625f9b | 158 | if (dev_is_sata(dev) || dev->dev_type == SAS_END_DEV) |
87c8331f DW |
159 | list_add_tail(&dev->disco_list_node, &port->disco_list); |
160 | else { | |
161 | spin_lock_irq(&port->dev_list_lock); | |
162 | list_add_tail(&dev->dev_list_node, &port->dev_list); | |
163 | spin_unlock_irq(&port->dev_list_lock); | |
164 | } | |
2908d778 | 165 | |
ec236e52 DW |
166 | spin_lock_irq(&port->phy_list_lock); |
167 | list_for_each_entry(phy, &port->phy_list, port_phy_el) | |
168 | sas_phy_set_target(phy, dev); | |
169 | spin_unlock_irq(&port->phy_list_lock); | |
170 | ||
2908d778 JB |
171 | return 0; |
172 | } | |
173 | ||
174 | /* ---------- Discover and Revalidate ---------- */ | |
175 | ||
2908d778 JB |
176 | int sas_notify_lldd_dev_found(struct domain_device *dev) |
177 | { | |
178 | int res = 0; | |
179 | struct sas_ha_struct *sas_ha = dev->port->ha; | |
180 | struct Scsi_Host *shost = sas_ha->core.shost; | |
181 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
182 | ||
183 | if (i->dft->lldd_dev_found) { | |
184 | res = i->dft->lldd_dev_found(dev); | |
185 | if (res) { | |
186 | printk("sas: driver on pcidev %s cannot handle " | |
187 | "device %llx, error:%d\n", | |
71610f55 | 188 | dev_name(sas_ha->dev), |
2908d778 JB |
189 | SAS_ADDR(dev->sas_addr), res); |
190 | } | |
735f7d2f | 191 | kref_get(&dev->kref); |
2908d778 JB |
192 | } |
193 | return res; | |
194 | } | |
195 | ||
196 | ||
197 | void sas_notify_lldd_dev_gone(struct domain_device *dev) | |
198 | { | |
199 | struct sas_ha_struct *sas_ha = dev->port->ha; | |
200 | struct Scsi_Host *shost = sas_ha->core.shost; | |
201 | struct sas_internal *i = to_sas_internal(shost->transportt); | |
202 | ||
735f7d2f | 203 | if (i->dft->lldd_dev_gone) { |
2908d778 | 204 | i->dft->lldd_dev_gone(dev); |
735f7d2f DW |
205 | sas_put_device(dev); |
206 | } | |
2908d778 JB |
207 | } |
208 | ||
92625f9b DW |
209 | static void sas_probe_devices(struct work_struct *work) |
210 | { | |
211 | struct domain_device *dev, *n; | |
22b9153f | 212 | struct sas_discovery_event *ev = to_sas_discovery_event(work); |
92625f9b | 213 | struct asd_sas_port *port = ev->port; |
2908d778 | 214 | |
92625f9b DW |
215 | clear_bit(DISCE_PROBE, &port->disc.pending); |
216 | ||
9508a66f DW |
217 | /* devices must be domain members before link recovery and probe */ |
218 | list_for_each_entry(dev, &port->disco_list, disco_list_node) { | |
92625f9b DW |
219 | spin_lock_irq(&port->dev_list_lock); |
220 | list_add_tail(&dev->dev_list_node, &port->dev_list); | |
221 | spin_unlock_irq(&port->dev_list_lock); | |
9508a66f | 222 | } |
92625f9b | 223 | |
9508a66f | 224 | sas_probe_sata(port); |
92625f9b | 225 | |
9508a66f DW |
226 | list_for_each_entry_safe(dev, n, &port->disco_list, disco_list_node) { |
227 | int err; | |
228 | ||
229 | err = sas_rphy_add(dev->rphy); | |
230 | if (err) | |
231 | sas_fail_probe(dev, __func__, err); | |
232 | else | |
92625f9b DW |
233 | list_del_init(&dev->disco_list_node); |
234 | } | |
235 | } | |
2908d778 JB |
236 | |
237 | /** | |
238 | * sas_discover_end_dev -- discover an end device (SSP, etc) | |
239 | * @end: pointer to domain device of interest | |
240 | * | |
241 | * See comment in sas_discover_sata(). | |
242 | */ | |
243 | int sas_discover_end_dev(struct domain_device *dev) | |
244 | { | |
245 | int res; | |
246 | ||
247 | res = sas_notify_lldd_dev_found(dev); | |
248 | if (res) | |
92625f9b DW |
249 | return res; |
250 | sas_discover_event(dev->port, DISCE_PROBE); | |
2908d778 | 251 | |
2908d778 | 252 | return 0; |
2908d778 JB |
253 | } |
254 | ||
255 | /* ---------- Device registration and unregistration ---------- */ | |
256 | ||
735f7d2f DW |
257 | void sas_free_device(struct kref *kref) |
258 | { | |
259 | struct domain_device *dev = container_of(kref, typeof(*dev), kref); | |
260 | ||
9487669f DW |
261 | put_device(&dev->rphy->dev); |
262 | dev->rphy = NULL; | |
263 | ||
735f7d2f DW |
264 | if (dev->parent) |
265 | sas_put_device(dev->parent); | |
266 | ||
f41a0c44 DW |
267 | sas_port_put_phy(dev->phy); |
268 | dev->phy = NULL; | |
269 | ||
735f7d2f DW |
270 | /* remove the phys and ports, everything else should be gone */ |
271 | if (dev->dev_type == EDGE_DEV || dev->dev_type == FANOUT_DEV) | |
272 | kfree(dev->ex_dev.ex_phy); | |
273 | ||
8abda4d2 DW |
274 | if (dev_is_sata(dev) && dev->sata_dev.ap) { |
275 | ata_sas_port_destroy(dev->sata_dev.ap); | |
276 | dev->sata_dev.ap = NULL; | |
277 | } | |
278 | ||
735f7d2f DW |
279 | kfree(dev); |
280 | } | |
281 | ||
1a34c064 | 282 | static void sas_unregister_common_dev(struct asd_sas_port *port, struct domain_device *dev) |
2908d778 | 283 | { |
5db45bdc DW |
284 | struct sas_ha_struct *ha = port->ha; |
285 | ||
2908d778 JB |
286 | sas_notify_lldd_dev_gone(dev); |
287 | if (!dev->parent) | |
288 | dev->port->port_dev = NULL; | |
289 | else | |
290 | list_del_init(&dev->siblings); | |
1a34c064 DW |
291 | |
292 | spin_lock_irq(&port->dev_list_lock); | |
2908d778 | 293 | list_del_init(&dev->dev_list_node); |
e4a9c373 DW |
294 | if (dev_is_sata(dev)) |
295 | sas_ata_end_eh(dev->sata_dev.ap); | |
1a34c064 | 296 | spin_unlock_irq(&port->dev_list_lock); |
735f7d2f | 297 | |
5db45bdc DW |
298 | spin_lock_irq(&ha->lock); |
299 | if (dev->dev_type == SAS_END_DEV && | |
300 | !list_empty(&dev->ssp_dev.eh_list_node)) { | |
301 | list_del_init(&dev->ssp_dev.eh_list_node); | |
302 | ha->eh_active--; | |
303 | } | |
304 | spin_unlock_irq(&ha->lock); | |
305 | ||
735f7d2f | 306 | sas_put_device(dev); |
2908d778 JB |
307 | } |
308 | ||
87c8331f | 309 | static void sas_destruct_devices(struct work_struct *work) |
2908d778 | 310 | { |
87c8331f | 311 | struct domain_device *dev, *n; |
22b9153f | 312 | struct sas_discovery_event *ev = to_sas_discovery_event(work); |
87c8331f DW |
313 | struct asd_sas_port *port = ev->port; |
314 | ||
315 | clear_bit(DISCE_DESTRUCT, &port->disc.pending); | |
316 | ||
317 | list_for_each_entry_safe(dev, n, &port->destroy_list, disco_list_node) { | |
318 | list_del_init(&dev->disco_list_node); | |
319 | ||
2908d778 JB |
320 | sas_remove_children(&dev->rphy->dev); |
321 | sas_rphy_delete(dev->rphy); | |
87c8331f | 322 | sas_unregister_common_dev(port, dev); |
87c8331f DW |
323 | } |
324 | } | |
325 | ||
326 | void sas_unregister_dev(struct asd_sas_port *port, struct domain_device *dev) | |
327 | { | |
328 | if (!test_bit(SAS_DEV_DESTROY, &dev->state) && | |
329 | !list_empty(&dev->disco_list_node)) { | |
330 | /* this rphy never saw sas_rphy_add */ | |
331 | list_del_init(&dev->disco_list_node); | |
332 | sas_rphy_free(dev->rphy); | |
87c8331f | 333 | sas_unregister_common_dev(port, dev); |
9487669f | 334 | return; |
87c8331f DW |
335 | } |
336 | ||
9487669f | 337 | if (!test_and_set_bit(SAS_DEV_DESTROY, &dev->state)) { |
87c8331f DW |
338 | sas_rphy_unlink(dev->rphy); |
339 | list_move_tail(&dev->disco_list_node, &port->destroy_list); | |
340 | sas_discover_event(dev->port, DISCE_DESTRUCT); | |
2908d778 | 341 | } |
2908d778 JB |
342 | } |
343 | ||
7d05919a | 344 | void sas_unregister_domain_devices(struct asd_sas_port *port, int gone) |
2908d778 JB |
345 | { |
346 | struct domain_device *dev, *n; | |
347 | ||
7d05919a DW |
348 | list_for_each_entry_safe_reverse(dev, n, &port->dev_list, dev_list_node) { |
349 | if (gone) | |
350 | set_bit(SAS_DEV_GONE, &dev->state); | |
1a34c064 | 351 | sas_unregister_dev(port, dev); |
7d05919a DW |
352 | } |
353 | ||
87c8331f DW |
354 | list_for_each_entry_safe(dev, n, &port->disco_list, disco_list_node) |
355 | sas_unregister_dev(port, dev); | |
2908d778 JB |
356 | |
357 | port->port->rphy = NULL; | |
358 | ||
359 | } | |
360 | ||
f41a0c44 DW |
361 | void sas_device_set_phy(struct domain_device *dev, struct sas_port *port) |
362 | { | |
363 | struct sas_ha_struct *ha; | |
364 | struct sas_phy *new_phy; | |
365 | ||
366 | if (!dev) | |
367 | return; | |
368 | ||
369 | ha = dev->port->ha; | |
370 | new_phy = sas_port_get_phy(port); | |
371 | ||
372 | /* pin and record last seen phy */ | |
373 | spin_lock_irq(&ha->phy_port_lock); | |
374 | if (new_phy) { | |
375 | sas_port_put_phy(dev->phy); | |
376 | dev->phy = new_phy; | |
377 | } | |
378 | spin_unlock_irq(&ha->phy_port_lock); | |
379 | } | |
380 | ||
2908d778 JB |
381 | /* ---------- Discovery and Revalidation ---------- */ |
382 | ||
383 | /** | |
384 | * sas_discover_domain -- discover the domain | |
385 | * @port: port to the domain of interest | |
386 | * | |
387 | * NOTE: this process _must_ quit (return) as soon as any connection | |
388 | * errors are encountered. Connection recovery is done elsewhere. | |
389 | * Discover process only interrogates devices in order to discover the | |
390 | * domain. | |
391 | */ | |
c4028958 | 392 | static void sas_discover_domain(struct work_struct *work) |
2908d778 | 393 | { |
6f63caae | 394 | struct domain_device *dev; |
2908d778 | 395 | int error = 0; |
22b9153f | 396 | struct sas_discovery_event *ev = to_sas_discovery_event(work); |
c4028958 | 397 | struct asd_sas_port *port = ev->port; |
2908d778 | 398 | |
b15ebe0b | 399 | clear_bit(DISCE_DISCOVER_DOMAIN, &port->disc.pending); |
2908d778 JB |
400 | |
401 | if (port->port_dev) | |
6f63caae DW |
402 | return; |
403 | ||
404 | error = sas_get_port_device(port); | |
405 | if (error) | |
406 | return; | |
407 | dev = port->port_dev; | |
2908d778 JB |
408 | |
409 | SAS_DPRINTK("DOING DISCOVERY on port %d, pid:%d\n", port->id, | |
ba25f9dc | 410 | task_pid_nr(current)); |
2908d778 | 411 | |
6f63caae | 412 | switch (dev->dev_type) { |
2908d778 | 413 | case SAS_END_DEV: |
6f63caae | 414 | error = sas_discover_end_dev(dev); |
2908d778 JB |
415 | break; |
416 | case EDGE_DEV: | |
417 | case FANOUT_DEV: | |
6f63caae | 418 | error = sas_discover_root_expander(dev); |
2908d778 JB |
419 | break; |
420 | case SATA_DEV: | |
421 | case SATA_PM: | |
15c73d5a | 422 | #ifdef CONFIG_SCSI_SAS_ATA |
6f63caae | 423 | error = sas_discover_sata(dev); |
2908d778 | 424 | break; |
15c73d5a JB |
425 | #else |
426 | SAS_DPRINTK("ATA device seen but CONFIG_SCSI_SAS_ATA=N so cannot attach\n"); | |
427 | /* Fall through */ | |
b9142174 | 428 | #endif |
2908d778 | 429 | default: |
b9142174 | 430 | error = -ENXIO; |
6f63caae | 431 | SAS_DPRINTK("unhandled device %d\n", dev->dev_type); |
2908d778 JB |
432 | break; |
433 | } | |
434 | ||
435 | if (error) { | |
6f63caae | 436 | sas_rphy_free(dev->rphy); |
87c8331f | 437 | list_del_init(&dev->disco_list_node); |
9d720d82 | 438 | spin_lock_irq(&port->dev_list_lock); |
6f63caae | 439 | list_del_init(&dev->dev_list_node); |
9d720d82 | 440 | spin_unlock_irq(&port->dev_list_lock); |
88808398 | 441 | |
735f7d2f | 442 | sas_put_device(dev); |
2908d778 JB |
443 | port->port_dev = NULL; |
444 | } | |
445 | ||
446 | SAS_DPRINTK("DONE DISCOVERY on port %d, pid:%d, result:%d\n", port->id, | |
ba25f9dc | 447 | task_pid_nr(current), error); |
2908d778 JB |
448 | } |
449 | ||
c4028958 | 450 | static void sas_revalidate_domain(struct work_struct *work) |
2908d778 JB |
451 | { |
452 | int res = 0; | |
22b9153f | 453 | struct sas_discovery_event *ev = to_sas_discovery_event(work); |
c4028958 | 454 | struct asd_sas_port *port = ev->port; |
87c8331f DW |
455 | struct sas_ha_struct *ha = port->ha; |
456 | ||
457 | /* prevent revalidation from finding sata links in recovery */ | |
458 | mutex_lock(&ha->disco_mutex); | |
459 | if (test_bit(SAS_HA_ATA_EH_ACTIVE, &ha->state)) { | |
460 | SAS_DPRINTK("REVALIDATION DEFERRED on port %d, pid:%d\n", | |
461 | port->id, task_pid_nr(current)); | |
462 | goto out; | |
463 | } | |
2908d778 | 464 | |
b15ebe0b | 465 | clear_bit(DISCE_REVALIDATE_DOMAIN, &port->disc.pending); |
2908d778 JB |
466 | |
467 | SAS_DPRINTK("REVALIDATING DOMAIN on port %d, pid:%d\n", port->id, | |
ba25f9dc | 468 | task_pid_nr(current)); |
87c8331f | 469 | |
2908d778 JB |
470 | if (port->port_dev) |
471 | res = sas_ex_revalidate_domain(port->port_dev); | |
472 | ||
473 | SAS_DPRINTK("done REVALIDATING DOMAIN on port %d, pid:%d, res 0x%x\n", | |
ba25f9dc | 474 | port->id, task_pid_nr(current), res); |
87c8331f DW |
475 | out: |
476 | mutex_unlock(&ha->disco_mutex); | |
2908d778 JB |
477 | } |
478 | ||
479 | /* ---------- Events ---------- */ | |
480 | ||
22b9153f | 481 | static void sas_chain_work(struct sas_ha_struct *ha, struct sas_work *sw) |
b1124cd3 | 482 | { |
22b9153f DW |
483 | /* chained work is not subject to SA_HA_DRAINING or |
484 | * SAS_HA_REGISTERED, because it is either submitted in the | |
485 | * workqueue, or known to be submitted from a context that is | |
486 | * not racing against draining | |
487 | */ | |
488 | scsi_queue_work(ha->core.shost, &sw->work); | |
b1124cd3 DW |
489 | } |
490 | ||
491 | static void sas_chain_event(int event, unsigned long *pending, | |
22b9153f | 492 | struct sas_work *sw, |
b1124cd3 DW |
493 | struct sas_ha_struct *ha) |
494 | { | |
495 | if (!test_and_set_bit(event, pending)) { | |
496 | unsigned long flags; | |
497 | ||
e4a9c373 | 498 | spin_lock_irqsave(&ha->lock, flags); |
22b9153f | 499 | sas_chain_work(ha, sw); |
e4a9c373 | 500 | spin_unlock_irqrestore(&ha->lock, flags); |
b1124cd3 DW |
501 | } |
502 | } | |
503 | ||
2908d778 JB |
504 | int sas_discover_event(struct asd_sas_port *port, enum discover_event ev) |
505 | { | |
506 | struct sas_discovery *disc; | |
507 | ||
508 | if (!port) | |
509 | return 0; | |
510 | disc = &port->disc; | |
511 | ||
512 | BUG_ON(ev >= DISC_NUM_EVENTS); | |
513 | ||
b1124cd3 | 514 | sas_chain_event(ev, &disc->pending, &disc->disc_work[ev].work, port->ha); |
2908d778 JB |
515 | |
516 | return 0; | |
517 | } | |
518 | ||
519 | /** | |
520 | * sas_init_disc -- initialize the discovery struct in the port | |
521 | * @port: pointer to struct port | |
522 | * | |
523 | * Called when the ports are being initialized. | |
524 | */ | |
525 | void sas_init_disc(struct sas_discovery *disc, struct asd_sas_port *port) | |
526 | { | |
527 | int i; | |
528 | ||
c4028958 | 529 | static const work_func_t sas_event_fns[DISC_NUM_EVENTS] = { |
2908d778 JB |
530 | [DISCE_DISCOVER_DOMAIN] = sas_discover_domain, |
531 | [DISCE_REVALIDATE_DOMAIN] = sas_revalidate_domain, | |
92625f9b | 532 | [DISCE_PROBE] = sas_probe_devices, |
87c8331f | 533 | [DISCE_DESTRUCT] = sas_destruct_devices, |
2908d778 JB |
534 | }; |
535 | ||
2908d778 | 536 | disc->pending = 0; |
c4028958 | 537 | for (i = 0; i < DISC_NUM_EVENTS; i++) { |
22b9153f | 538 | INIT_SAS_WORK(&disc->disc_work[i].work, sas_event_fns[i]); |
c4028958 DH |
539 | disc->disc_work[i].port = port; |
540 | } | |
2908d778 | 541 | } |