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1 /*-
2  * This file is provided under a dual BSD/GPLv2 license.  When using or
3  * redistributing this file, you may do so under either license.
4  *
5  * GPL LICENSE SUMMARY
6  *
7  * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
8  *
9  * This program is free software; you can redistribute it and/or modify
10  * it under the terms of version 2 of the GNU General Public License as
11  * published by the Free Software Foundation.
12  *
13  * This program is distributed in the hope that it will be useful, but
14  * WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
16  * General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License
19  * along with this program; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
21  * The full GNU General Public License is included in this distribution
22  * in the file called LICENSE.GPL.
23  *
24  * BSD LICENSE
25  *
26  * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
27  * All rights reserved.
28  *
29  * Redistribution and use in source and binary forms, with or without
30  * modification, are permitted provided that the following conditions
31  * are met:
32  *
33  *   * Redistributions of source code must retain the above copyright
34  *     notice, this list of conditions and the following disclaimer.
35  *   * Redistributions in binary form must reproduce the above copyright
36  *     notice, this list of conditions and the following disclaimer in
37  *     the documentation and/or other materials provided with the
38  *     distribution.
39  *
40  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
41  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
42  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
43  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
44  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
45  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
46  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
47  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
48  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
49  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
50  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
51  */
52
53 #include <sys/cdefs.h>
54 __FBSDID("$FreeBSD$");
55
56 /**
57  * @file
58  *
59  * @brief This file contains the implementation of the
60  *        SCIF_SAS_INTERNAL_IO_REQUEST object.
61  */
62
63
64 #include <dev/isci/scil/scic_io_request.h>
65 #include <dev/isci/scil/scic_remote_device.h>
66 #include <dev/isci/scil/scic_user_callback.h>
67 #include <dev/isci/scil/scic_controller.h>
68 #include <dev/isci/scil/scic_task_request.h>
69 #include <dev/isci/scil/scif_user_callback.h>
70
71 #include <dev/isci/scil/scif_sas_controller.h>
72 #include <dev/isci/scil/scif_sas_domain.h>
73 #include <dev/isci/scil/scif_sas_remote_device.h>
74 #include <dev/isci/scil/scif_sas_io_request.h>
75 #include <dev/isci/scil/scif_sas_internal_io_request.h>
76 #include <dev/isci/scil/scif_sas_task_request.h>
77 #include <dev/isci/scil/scif_sas_stp_io_request.h>
78 #include <dev/isci/scil/scif_sas_logger.h>
79 #include <dev/isci/scil/scif_sas_smp_io_request.h>
80 #include <dev/isci/scil/sci_util.h>
81
82 //******************************************************************************
83 //* P U B L I C   M E T H O D S
84 //******************************************************************************
85
86 /**
87  * @brief this routine return all memory needed for an internal request, both
88  *        framework and core request.
89  *
90  * @return U32 size of all memory needed for an internal request
91  */
92 U32 scif_sas_internal_request_get_object_size(
93    void
94 )
95 {
96    return MAX(
97             (sizeof(SCIF_SAS_INTERNAL_IO_REQUEST_T) + scic_io_request_get_object_size()),
98             (sizeof(SCIF_SAS_TASK_REQUEST_T) + scic_task_request_get_object_size())
99              );
100 }
101
102
103 /**
104  * @brief This method constructs an internal smp request.
105  *
106  * @param[in] fw_controller The framework controller
107  * @param[in] fw_device The smp device that the internal io targets to.
108  * @param[in] internal_io_memory The memory space for the internal io.
109  * @param[in] io_tag The io tag for the internl io to be constructed.
110  * @param[in] smp_command A pointer to the smp request data structure according
111  *       to SAS protocol.
112  *
113  * @return Indicate if the internal io was successfully constructed.
114  * @retval SCI_SUCCESS This value is returned if the internal io was
115  *         successfully constructed.
116  * @retval SCI_FAILURE This value is returned if the internal io was failed to
117  *         be constructed.
118  */
119 SCI_STATUS scif_sas_internal_io_request_construct_smp(
120    SCIF_SAS_CONTROLLER_T       * fw_controller,
121    SCIF_SAS_REMOTE_DEVICE_T    * fw_device,
122    void                        * internal_io_memory,
123    U16                           io_tag,
124    SMP_REQUEST_T               * smp_command
125 )
126 {
127    SCIF_SAS_INTERNAL_IO_REQUEST_T * fw_internal_io  =
128      (SCIF_SAS_INTERNAL_IO_REQUEST_T*)internal_io_memory;
129
130    SCIF_SAS_IO_REQUEST_T * fw_io =
131      (SCIF_SAS_IO_REQUEST_T*)internal_io_memory;
132
133    SCI_STATUS status;
134
135    //call common smp request construct routine.
136    status = scif_sas_io_request_construct_smp(
137                fw_controller,
138                fw_device,
139                internal_io_memory,
140                (char *)internal_io_memory + sizeof(SCIF_SAS_INTERNAL_IO_REQUEST_T),
141                SCI_CONTROLLER_INVALID_IO_TAG,
142                smp_command,
143                NULL //there is no associated user io object.
144             );
145
146    //Codes below are all internal io related.
147    if (status == SCI_SUCCESS)
148    {
149       //set the is_internal flag
150       fw_io->parent.is_internal = TRUE;
151
152       if (fw_internal_io->internal_io_timer == NULL)
153       {
154          //create the timer for this internal request.
155          fw_internal_io->internal_io_timer =
156             scif_cb_timer_create(
157                (SCI_CONTROLLER_HANDLE_T *)fw_controller,
158                scif_sas_internal_io_request_timeout_handler,
159                (void*)fw_io
160             );
161       }
162       else
163       {
164          ASSERT (0);
165       }
166
167       //insert into high priority queue
168       if ( !sci_pool_full(fw_controller->hprq.pool) )
169       {
170          sci_pool_put(
171             fw_controller->hprq.pool, (POINTER_UINT) internal_io_memory
172          );
173       }
174       else
175       {
176          SCIF_LOG_ERROR((
177             sci_base_object_get_logger(fw_controller),
178             SCIF_LOG_OBJECT_CONTROLLER | SCIF_LOG_OBJECT_REMOTE_DEVICE,
179             "scif_sas_internal_io_request_construct_smp, high priority queue full!\n"
180          ));
181
182          scif_sas_internal_io_request_destruct(fw_controller, fw_internal_io);
183
184          //return failure status.
185          return SCI_FAILURE_INSUFFICIENT_RESOURCES;
186       }
187    }
188
189    return status;
190 }
191
192
193 /**
194  * @brief This method constructs an internal smp request.
195  * @param[in] fw_io
196  *
197  * @return SCI_STATUS
198  */
199 SCI_STATUS scif_sas_internal_io_request_construct_stp(
200    SCIF_SAS_INTERNAL_IO_REQUEST_T * fw_io
201 )
202 {
203    //TBD
204    return SCI_SUCCESS;
205 }
206
207
208 /**
209  * @brief This method handles the timeout situation for an internal io.
210  *
211  * @param[in] fw_internal_io The timed out IO.
212  *
213  * @return none
214  */
215 void scif_sas_internal_io_request_timeout_handler(
216    void * fw_internal_io
217 )
218 {
219    SCIF_SAS_REQUEST_T * fw_request = (SCIF_SAS_REQUEST_T *)fw_internal_io;
220
221    SCIF_LOG_TRACE((
222       sci_base_object_get_logger(fw_request),
223       SCIF_LOG_OBJECT_IO_REQUEST,
224       "scif_sas_internal_io_request_timeout_handler(0x%x) enter\n",
225       fw_internal_io
226    ));
227
228    fw_request->state_handlers->abort_handler(&fw_request->parent);
229 }
230
231
232 /**
233  * @brief This methods takes care of completion of an internal request about its
234  *        "internal" related feature, including the memory recycling and timer.
235  *
236  * @param[in] fw_controller The framework controller object.
237  * @param[in] fw_internal_io The internal io to be completed.
238  * @param[in] completion_status the completeion status by core and framework so
239  *       far.
240  *
241  * @return none
242  */
243 void scif_sas_internal_io_request_complete(
244    SCIF_SAS_CONTROLLER_T          * fw_controller,
245    SCIF_SAS_INTERNAL_IO_REQUEST_T * fw_internal_io,
246    SCI_STATUS                       completion_status
247 )
248 {
249    SCIF_LOG_TRACE((
250       sci_base_object_get_logger(fw_controller),
251       SCIF_LOG_OBJECT_IO_REQUEST,
252       "scif_sas_internal_io_request_complete(0x%x, 0x%x, 0x%x) enter\n",
253        fw_controller, fw_internal_io, completion_status
254    ));
255
256    scif_cb_timer_stop(fw_controller, fw_internal_io->internal_io_timer);
257    scif_sas_internal_io_request_destruct(fw_controller, fw_internal_io);
258 }
259
260
261 /**
262  * @brief This methods takes care of destruction of an internal request about its
263  *        "internal" related feature, including the memory recycling and timer.
264  *
265  * @param[in] fw_controller The framework controller object.
266  * @param[in] fw_internal_io The internal io to be completed.
267  *
268  * @return none
269  */
270 void scif_sas_internal_io_request_destruct(
271    SCIF_SAS_CONTROLLER_T          * fw_controller,
272    SCIF_SAS_INTERNAL_IO_REQUEST_T * fw_internal_io
273 )
274 {
275    if (fw_internal_io->internal_io_timer != NULL)
276    {
277       scif_cb_timer_destroy(fw_controller, fw_internal_io->internal_io_timer);
278       fw_internal_io->internal_io_timer = NULL;
279    }
280    scif_sas_controller_free_internal_request(fw_controller, fw_internal_io);
281 }
282