1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * BSD LICENSE
5 *
6 * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 *
13 * * Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * * Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
18 * distribution.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
23 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
24 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
25 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
26 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
30 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD$");
35
36 #include <dev/isci/isci.h>
37
38 #include <cam/cam_periph.h>
39 #include <cam/cam_xpt_periph.h>
40
41 #include <dev/isci/scil/scif_domain.h>
42 #include <dev/isci/scil/scif_remote_device.h>
43 #include <dev/isci/scil/scif_controller.h>
44 #include <dev/isci/scil/scif_user_callback.h>
45
46 /**
47 * @brief This callback method informs the framework user that something
48 * in the supplied domain has changed (e.g. a device was added or
49 * removed).
50 *
51 * This callback is called by the framework outside of discovery or
52 * target reset processes. Specifically, domain changes occurring
53 * during these processes are handled by the framework. For example,
54 * in the case of Serial Attached SCSI, reception of a BROADCAST (CHANGE)
55 * during discovery will cause discovery to restart. Thus, discovery
56 * does not complete until all BCNs are processed. Note, during controller
57 * stopping/reset process, the framework user should not expect this call
58 * back.
59 *
60 * @param[in] controller This parameter specifies the controller object
61 * with which this callback is associated.
62 * @param[in] domain This parameter specifies the domain object with
63 * which this callback is associated.
64 *
65 * @return none
66 */
67 void
68 scif_cb_domain_change_notification(SCI_CONTROLLER_HANDLE_T controller,
69 SCI_DOMAIN_HANDLE_T domain)
70 {
71 struct ISCI_CONTROLLER *isci_controller =
72 (struct ISCI_CONTROLLER *)sci_object_get_association(controller);
73
74 /* When the controller start is complete, we will explicitly discover
75 * all of the domains then. This is because SCIF will not allow
76 * any I/O to start until the controller is ready, meaning internal SMP
77 * requests triggered by domain discovery won't work until the controller
78 * is ready.
79 */
80 if (isci_controller->is_started == TRUE)
81 scif_domain_discover(domain,
82 scif_domain_get_suggested_discover_timeout(domain),
83 DEVICE_TIMEOUT);
84 }
85
86 /**
87 * @brief This callback method informs the framework user that a previously
88 * requested discovery operation on the domain has completed.
89 *
90 * @param[in] controller This parameter specifies the controller object
91 * with which this callback is associated.
92 * @param[in] domain This parameter specifies the domain object with
93 * which this callback is associated.
94 * @param[in] completion_status This parameter indicates the results of the
95 * discovery operation.
96 *
97 * @return none
98 */
99 void
100 scif_cb_domain_discovery_complete(SCI_CONTROLLER_HANDLE_T controller,
101 SCI_DOMAIN_HANDLE_T domain, SCI_STATUS completion_status)
102 {
103
104 if(completion_status != SCI_SUCCESS)
105 isci_log_message(0, "ISCI",
106 "scif_cb_domain_discovery_complete status = 0x%x\n",
107 completion_status);
108
109 isci_controller_domain_discovery_complete(
110 (struct ISCI_CONTROLLER *)sci_object_get_association(controller),
111 (struct ISCI_DOMAIN *) sci_object_get_association(domain));
112 }
113
114 /**
115 * @brief This callback method informs the framework user that a previously
116 * requested reset operation on the domain has completed.
117 *
118 * @param[in] controller This parameter specifies the controller object
119 * with which this callback is associated.
120 * @param[in] domain This parameter specifies the domain object with
121 * which this callback is associated.
122 * @param[in] completion_status This parameter indicates the results of the
123 * reset operation.
124 *
125 * @return none
126 */
127 void
128 scif_cb_domain_reset_complete(SCI_CONTROLLER_HANDLE_T controller,
129 SCI_DOMAIN_HANDLE_T domain, SCI_STATUS completion_status)
130 {
131
132 }
133
134 /**
135 * @brief This callback method informs the framework user that the domain
136 * is ready and capable of processing IO requests for devices found
137 * inside it.
138 *
139 * @param[in] controller This parameter specifies the controller object
140 * with which this callback is associated.
141 * @param[in] domain This parameter specifies the domain object with
142 * which this callback is associated.
143 *
144 * @return none
145 */
146 void
147 scif_cb_domain_ready(SCI_CONTROLLER_HANDLE_T controller,
148 SCI_DOMAIN_HANDLE_T domain)
149 {
150 uint32_t i;
151 struct ISCI_DOMAIN *isci_domain = sci_object_get_association(domain);
152 struct ISCI_CONTROLLER *isci_controller =
153 sci_object_get_association(controller);
154
155 for (i = 0; i < SCI_MAX_REMOTE_DEVICES; i++) {
156 struct ISCI_REMOTE_DEVICE *remote_device =
157 isci_controller->remote_device[i];
158
159 if (remote_device != NULL &&
160 remote_device->domain == isci_domain)
161 isci_remote_device_release_device_queue(remote_device);
162 }
163 }
164
165 /**
166 * @brief This callback method informs the framework user that the domain
167 * is no longer ready. Thus, it is incapable of processing IO
168 * requests for devices found inside it.
169 *
170 * @param[in] controller This parameter specifies the controller object
171 * with which this callback is associated.
172 * @param[in] domain This parameter specifies the domain object with
173 * which this callback is associated.
174 *
175 * @return none
176 */
177 void
178 scif_cb_domain_not_ready(SCI_CONTROLLER_HANDLE_T controller,
179 SCI_DOMAIN_HANDLE_T domain)
180 {
181
182 }
183
184 /**
185 * @brief This callback method informs the framework user that a new
186 * direct attached device was found in the domain.
187 *
188 * @param[in] controller This parameter specifies the controller object
189 * with which this callback is associated.
190 * @param[in] domain This parameter specifies the domain object with
191 * which this callback is associated.
192 * @param[in] sas_address This parameter specifies the SAS address of
193 * the new device.
194 * @param[in] protocols This parameter specifies the protocols
195 * supported by the newly discovered device.
196 *
197 * @return none
198 */
199 void
200 scif_cb_domain_da_device_added(SCI_CONTROLLER_HANDLE_T controller,
201 SCI_DOMAIN_HANDLE_T domain, SCI_SAS_ADDRESS_T *sas_address,
202 SCI_SAS_IDENTIFY_ADDRESS_FRAME_PROTOCOLS_T *protocols)
203 {
204 struct ISCI_REMOTE_DEVICE *remote_device;
205 struct ISCI_DOMAIN *isci_domain =
206 (struct ISCI_DOMAIN *)sci_object_get_association(domain);
207
208 /*
209 * For direct-attached devices, do not pull the device object from
210 * the pool. Rather, use the one stored in the domain object which
211 * will ensure that we always get consistent target ids for direct
212 * attached devices.
213 */
214 remote_device = isci_domain->da_remote_device;
215
216 scif_remote_device_construct(domain,
217 (uint8_t*)remote_device + sizeof(struct ISCI_REMOTE_DEVICE),
218 &(remote_device->sci_object));
219
220 sci_object_set_association(remote_device->sci_object, remote_device);
221
222 scif_remote_device_da_construct(remote_device->sci_object, sas_address,
223 protocols);
224
225 /* We do not put the device in the ISCI_CONTROLLER's device array yet.
226 * That will happen once the device becomes ready (see
227 * scif_cb_remote_device_ready).
228 */
229
230 remote_device->domain = isci_domain;
231 }
232
233 /**
234 * @brief This callback method informs the framework user that a new
235 * expander attached device was found in the domain.
236 *
237 * @param[in] controller This parameter specifies the controller object
238 * with which this callback is associated.
239 * @param[in] domain This parameter specifies the domain object with
240 * which this callback is associated.
241 * @param[in] containing_device This parameter specifies the remote
242 * device that contains the device that was added.
243 * @param[in] smp_response This parameter specifies the SMP response
244 * data associated with the newly discovered device.
245 *
246 * @return none
247 */
248 void
249 scif_cb_domain_ea_device_added(SCI_CONTROLLER_HANDLE_T controller,
250 SCI_DOMAIN_HANDLE_T domain, SCI_REMOTE_DEVICE_HANDLE_T containing_device,
251 SMP_RESPONSE_DISCOVER_T *smp_response)
252 {
253 struct ISCI_REMOTE_DEVICE *remote_device;
254 struct ISCI_DOMAIN *isci_domain =
255 (struct ISCI_DOMAIN *)sci_object_get_association(domain);
256 struct ISCI_CONTROLLER *isci_controller =
257 (struct ISCI_CONTROLLER *)sci_object_get_association(controller);
258
259 sci_pool_get(isci_controller->remote_device_pool, remote_device);
260
261 scif_remote_device_construct( domain,
262 (uint8_t*)remote_device + sizeof(struct ISCI_REMOTE_DEVICE),
263 &(remote_device->sci_object));
264
265 sci_object_set_association(remote_device->sci_object, remote_device);
266
267 scif_remote_device_ea_construct(remote_device->sci_object,
268 containing_device, smp_response);
269
270 /* We do not put the device in the ISCI_CONTROLLER's device array yet.
271 * That will happen once the device becomes ready (see
272 * scif_cb_remote_device_ready).
273 */
274 remote_device->domain = isci_domain;
275 }
276
277 /**
278 * @brief This callback method informs the framework user that a device
279 * has been removed from the domain.
280 *
281 * @param[in] controller This parameter specifies the controller object
282 * with which this callback is associated.
283 * @param[in] domain This parameter specifies the domain object with
284 * which this callback is associated.
285 * @param[in] remote_device This parameter specifies the device object with
286 * which this callback is associated.
287 *
288 * @return none
289 */
290 void
291 scif_cb_domain_device_removed(SCI_CONTROLLER_HANDLE_T controller,
292 SCI_DOMAIN_HANDLE_T domain, SCI_REMOTE_DEVICE_HANDLE_T remote_device)
293 {
294 struct ISCI_REMOTE_DEVICE *isci_remote_device =
295 (struct ISCI_REMOTE_DEVICE *)sci_object_get_association(remote_device);
296 struct ISCI_DOMAIN *isci_domain =
297 (struct ISCI_DOMAIN *)sci_object_get_association(domain);
298 struct ISCI_CONTROLLER *isci_controller =
299 (struct ISCI_CONTROLLER *)sci_object_get_association(controller);
300 uint32_t path = cam_sim_path(isci_controller->sim);
301 union ccb *ccb = xpt_alloc_ccb_nowait();
302
303 isci_controller->remote_device[isci_remote_device->index] = NULL;
304
305 xpt_create_path(&ccb->ccb_h.path, NULL, path,
306 isci_remote_device->index, CAM_LUN_WILDCARD);
307
308 xpt_rescan(ccb);
309
310 scif_remote_device_destruct(remote_device);
311
312 /*
313 * Only put the remote device back into the pool if it was an
314 * expander-attached device.
315 */
316 if (isci_remote_device != isci_domain->da_remote_device)
317 sci_pool_put(isci_controller->remote_device_pool,
318 isci_remote_device);
319 }
320
321 void
322 isci_domain_construct(struct ISCI_DOMAIN *domain, uint32_t domain_index,
323 struct ISCI_CONTROLLER *controller)
324 {
325
326 scif_controller_get_domain_handle( controller->scif_controller_handle,
327 domain_index, &domain->sci_object);
328
329 domain->index = domain_index;
330 domain->controller = controller;
331 sci_object_set_association(domain->sci_object, (void *)domain);
332 }
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