b3475f915a0233246f95bbdcd3d0790e75845384
1 /*
2 * Copyright (c) 2012-2015 Texas Instruments Incorporated - http://www.ti.com
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * * Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 *
12 * * Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * * Neither the name of Texas Instruments Incorporated nor the names of
17 * its contributors may be used to endorse or promote products derived
18 * from this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
22 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
24 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
25 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
26 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
27 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
28 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
29 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
30 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32 /*
33 * ======== TransportShm.c ========
34 */
36 #include <xdc/std.h>
37 #include <xdc/runtime/Assert.h>
38 #include <xdc/runtime/Error.h>
39 #include <xdc/runtime/Gate.h>
40 #include <xdc/runtime/Memory.h>
42 #include <ti/sysbios/hal/Cache.h>
43 #include <ti/sysbios/knl/Swi.h>
45 #include "package/internal/TransportShm.xdc.h"
47 #include <ti/sdo/ipc/_Ipc.h>
48 #include <ti/sdo/utils/_MultiProc.h>
49 #include <ti/sdo/ipc/_SharedRegion.h>
50 #include <ti/sdo/ipc/_Notify.h>
51 #include <ti/sdo/ipc/_GateMP.h>
52 #include <ti/sdo/ipc/_ListMP.h>
53 #include <ti/sdo/ipc/_MessageQ.h>
55 /* Need to use reserved notify events */
56 #undef TransportShm_notifyEventId
57 #define TransportShm_notifyEventId \
58 ti_sdo_ipc_transports_TransportShm_notifyEventId + \
59 (UInt32)((UInt32)Notify_SYSTEMKEY << 16)
61 /*
62 *************************************************************************
63 * Module functions
64 *************************************************************************
65 */
68 /*
69 * ======== TransportShm_notifyFxn ========
70 */
71 Void TransportShm_notifyFxn(UInt16 procId,
72 UInt16 lineId,
73 UInt32 eventId,
74 UArg arg,
75 UInt32 payload)
76 {
77 Swi_Handle swiHandle;
79 /* Swi_Handle was passed as arg in register */
80 swiHandle = (Swi_Handle)arg;
82 /* post the Swi */
83 Swi_post(swiHandle);
84 }
86 /*
87 * ======== TransportShm_swiFxn ========
88 */
89 Void TransportShm_swiFxn(UArg arg)
90 {
91 UInt32 queueId;
92 TransportShm_Object *obj = (TransportShm_Object *)arg;
93 MessageQ_Msg msg = NULL;
95 /*
96 * While there are messages, get them out and send them to
97 * their final destination.
98 */
99 msg = (MessageQ_Msg)ListMP_getHead((ListMP_Handle)obj->localList);
100 while (msg != NULL) {
101 /* Get the destination message queue Id */
102 queueId = MessageQ_getDstQueue(msg);
104 /* put the message to the destination queue */
105 MessageQ_put(queueId, msg);
107 /* check to see if there are more messages */
108 msg = (MessageQ_Msg)ListMP_getHead((ListMP_Handle)obj->localList);
109 }
110 }
112 /*
113 *************************************************************************
114 * Instance functions
115 *************************************************************************
116 */
118 /*
119 * ======== TransportShm_Instance_init ========
120 */
121 Int TransportShm_Instance_init(TransportShm_Object *obj,
122 UInt16 procId, const TransportShm_Params *params,
123 Error_Block *eb)
124 {
125 Int localIndex;
126 Int remoteIndex;
127 Int status;
128 Bool flag;
129 UInt32 minAlign;
130 ListMP_Params listMPParams[2];
131 Swi_Handle swiHandle;
132 Swi_Params swiParams;
133 Ptr localAddr;
135 swiHandle = TransportShm_Instance_State_swiObj(obj);
137 /*
138 * Determine who gets the '0' slot in shared memory and who gets
139 * the '1' slot. The '0' slot is given to the lower MultiProc id.
140 */
141 if (MultiProc_self() < procId) {
142 localIndex = 0;
143 remoteIndex = 1;
144 }
145 else {
146 localIndex = 1;
147 remoteIndex = 0;
148 }
150 if (params->openFlag) {
151 /* Open by sharedAddr */
152 obj->objType = ti_sdo_ipc_Ipc_ObjType_OPENDYNAMIC;
153 obj->self = (TransportShm_Attrs *)params->sharedAddr;
154 obj->regionId = SharedRegion_getId(params->sharedAddr);
155 obj->cacheEnabled = SharedRegion_isCacheEnabled(obj->regionId);
157 localAddr = SharedRegion_getPtr(obj->self->gateMPAddr);
158 status = GateMP_openByAddr(localAddr, (GateMP_Handle *)&obj->gate);
159 if (status < 0) {
160 Error_raise(eb, ti_sdo_ipc_Ipc_E_internal, 0, 0);
161 return(1);
162 }
163 }
164 else {
165 /* init the gate for ListMP create below */
166 if (params->gate != NULL) {
167 obj->gate = params->gate;
168 }
169 else {
170 obj->gate = (ti_sdo_ipc_GateMP_Handle)GateMP_getDefaultRemote();
171 }
173 /* Creating using sharedAddr */
174 obj->regionId = SharedRegion_getId(params->sharedAddr);
176 /* Assert that the buffer is in a valid shared region */
177 Assert_isTrue(obj->regionId != SharedRegion_INVALIDREGIONID,
178 ti_sdo_ipc_Ipc_A_addrNotInSharedRegion);
180 /* Assert that sharedAddr is cache aligned */
181 Assert_isTrue(SharedRegion_getCacheLineSize(obj->regionId) == 0 ||
182 ((UInt32)params->sharedAddr %
183 SharedRegion_getCacheLineSize(obj->regionId) == 0),
184 ti_sdo_ipc_Ipc_A_addrNotCacheAligned);
186 /* set object's cacheEnabled, type, self */
187 obj->cacheEnabled = SharedRegion_isCacheEnabled(obj->regionId);
188 obj->objType = ti_sdo_ipc_Ipc_ObjType_CREATEDYNAMIC;
189 obj->self = (TransportShm_Attrs *)params->sharedAddr;
190 }
192 /* determine the minimum alignment to align to */
193 minAlign = Memory_getMaxDefaultTypeAlign();
194 if (SharedRegion_getCacheLineSize(obj->regionId) > minAlign) {
195 minAlign = SharedRegion_getCacheLineSize(obj->regionId);
196 }
198 /*
199 * Carve up the shared memory.
200 * If cache is enabled, these need to be on separate cache lines.
201 * This is done with minAlign and _Ipc_roundup function.
202 */
203 obj->other = (TransportShm_Attrs *)((UInt32)(obj->self) +
204 (_Ipc_roundup(sizeof(TransportShm_Attrs), minAlign)));
206 ListMP_Params_init(&(listMPParams[0]));
207 listMPParams[0].gate = (GateMP_Handle)obj->gate;
208 listMPParams[0].sharedAddr = (UInt32 *)((UInt32)(obj->other) +
209 (_Ipc_roundup(sizeof(TransportShm_Attrs), minAlign)));
211 ListMP_Params_init(&listMPParams[1]);
212 listMPParams[1].gate = (GateMP_Handle)obj->gate;
213 listMPParams[1].sharedAddr = (UInt32 *)((UInt32)(listMPParams[0].sharedAddr)
214 + ListMP_sharedMemReq(&listMPParams[0]));
216 obj->priority = params->priority;
217 obj->remoteProcId = procId;
219 Swi_Params_init(&swiParams);
220 swiParams.arg0 = (UArg)obj;
221 Swi_construct(Swi_struct(swiHandle),
222 (Swi_FuncPtr)TransportShm_swiFxn,
223 &swiParams, eb);
225 if (params->openFlag == FALSE) {
226 obj->localList = (ti_sdo_ipc_ListMP_Handle)
227 ListMP_create(&(listMPParams[localIndex]));
228 if (obj->localList == NULL) {
229 Error_raise(eb, ti_sdo_ipc_Ipc_E_internal, 0, 0);
230 return (2);
231 }
233 obj->remoteList = (ti_sdo_ipc_ListMP_Handle)
234 ListMP_create(&(listMPParams[remoteIndex]));
235 if (obj->localList == NULL) {
236 Error_raise(eb, ti_sdo_ipc_Ipc_E_internal, 0, 0);
237 return (2);
238 }
239 }
240 else {
241 /* Open the local ListMP instance */
242 status = ListMP_openByAddr(listMPParams[localIndex].sharedAddr,
243 (ListMP_Handle *)&(obj->localList));
245 if (status < 0) {
246 Error_raise(eb, ti_sdo_ipc_Ipc_E_internal, 0, 0);
247 return (2);
248 }
250 /* Open the remote ListMP instance */
251 status = ListMP_openByAddr(listMPParams[remoteIndex].sharedAddr,
252 (ListMP_Handle *)&(obj->remoteList));
254 if (status < 0) {
255 Error_raise(eb, ti_sdo_ipc_Ipc_E_internal, 0, 0);
256 return (2);
257 }
258 }
260 /* register the event with Notify */
261 status = Notify_registerEventSingle(
262 procId, /* remoteProcId */
263 0, /* lineId */
264 TransportShm_notifyEventId,
265 (Notify_FnNotifyCbck)TransportShm_notifyFxn,
266 (UArg)swiHandle);
267 if (status < 0) {
268 Error_raise(eb, ti_sdo_ipc_Ipc_E_internal, 0, 0);
269 return (3);
270 }
272 /* Register the transport with MessageQ */
273 flag = ti_sdo_ipc_MessageQ_registerTransport(
274 TransportShm_Handle_upCast(obj), procId, params->priority);
275 if (flag == FALSE) {
276 Error_raise(eb, ti_sdo_ipc_Ipc_E_internal, 0, 0);
277 return (4);
278 }
280 if (params->openFlag == FALSE) {
281 obj->self->creatorProcId = MultiProc_self();
282 obj->self->notifyEventId = TransportShm_notifyEventId;
283 obj->self->priority = obj->priority;
285 /* Store the GateMP sharedAddr in the Attrs */
286 obj->self->gateMPAddr = ti_sdo_ipc_GateMP_getSharedAddr(obj->gate);
287 obj->self->flag = TransportShm_UP;
289 if (obj->cacheEnabled) {
290 Cache_wbInv(obj->self, sizeof(TransportShm_Attrs),
291 Cache_Type_ALL, TRUE);
292 }
293 }
294 else {
295 obj->other->flag = TransportShm_UP;
296 if (obj->cacheEnabled) {
297 Cache_wbInv(&(obj->other->flag), minAlign, Cache_Type_ALL, TRUE);
298 }
299 }
301 obj->status = TransportShm_UP;
303 return (0);
304 }
306 /*
307 * ======== TransportShm_Instance_finalize ========
308 */
309 Void TransportShm_Instance_finalize(TransportShm_Object* obj, Int status)
310 {
311 Swi_Handle swiHandle;
313 if (obj->objType == ti_sdo_ipc_Ipc_ObjType_CREATEDYNAMIC) {
314 /* clear the self flag */
315 obj->self->flag = 0;
317 if (obj->cacheEnabled) {
318 Cache_wbInv(&(obj->self->flag),
319 SharedRegion_getCacheLineSize(obj->regionId), Cache_Type_ALL,
320 TRUE);
321 }
323 if (obj->localList != NULL) {
324 ListMP_delete((ListMP_Handle *)&(obj->localList));
325 }
327 if (obj->remoteList != NULL) {
328 ListMP_delete((ListMP_Handle *)&(obj->remoteList));
329 }
330 }
331 else {
332 /* other flag was set by remote proc */
333 obj->other->flag = 0;
335 if (obj->cacheEnabled) {
336 Cache_wbInv(&(obj->other->flag),
337 SharedRegion_getCacheLineSize(obj->regionId), Cache_Type_ALL,
338 TRUE);
339 }
341 if (obj->gate != NULL) {
342 GateMP_close((GateMP_Handle *)&(obj->gate));
343 }
345 if (obj->localList != NULL) {
346 ListMP_close((ListMP_Handle *)&(obj->localList));
347 }
349 if (obj->remoteList != NULL) {
350 ListMP_close((ListMP_Handle *)&(obj->remoteList));
351 }
352 }
354 switch(status) {
355 case 0:
356 /* MessageQ_registerTransport succeeded */
357 ti_sdo_ipc_MessageQ_unregisterTransport(obj->remoteProcId, obj->priority);
358 /* OK to fall through */
359 case 1: /* GateMP open failed */
360 case 2: /* ListMP create/open failed */
361 case 3: /* Notify_registerEventSingle failed */
362 case 4: /* MessageQ_registerTransport failed */
363 Notify_unregisterEventSingle(
364 obj->remoteProcId,
365 0,
366 TransportShm_notifyEventId);
367 break;
368 }
370 /* Destruct the swi */
371 swiHandle = TransportShm_Instance_State_swiObj(obj);
372 if (swiHandle != NULL) {
373 Swi_destruct(Swi_struct(swiHandle));
374 }
375 }
377 /*
378 * ======== TransportShm_put ========
379 * Assuming MessageQ_put is making sure that the arguments are ok
380 */
381 Bool TransportShm_put(TransportShm_Object *obj, Ptr msg)
382 {
383 Int32 status;
384 Bool retval = TRUE;
385 IArg key;
386 UInt16 id = SharedRegion_getId(msg);
388 /* This transport only deals with messages allocated from SR's */
389 Assert_isTrue(id != SharedRegion_INVALIDREGIONID,
390 ti_sdo_ipc_SharedRegion_A_regionInvalid);
392 /* writeback invalidate the message */
393 if (SharedRegion_isCacheEnabled(id)) {
394 Cache_wbInv(msg, ((MessageQ_Msg)(msg))->msgSize, Cache_Type_ALL,
395 TRUE);
396 }
398 /* make sure ListMP_put and sendEvent are done before remote executes */
399 key = GateMP_enter((GateMP_Handle)obj->gate);
401 /* Put the message on the remoteList */
402 ListMP_putTail((ListMP_Handle)obj->remoteList, (ListMP_Elem *)msg);
404 /* Notify the remote processor */
405 status = Notify_sendEvent(obj->remoteProcId, 0, TransportShm_notifyEventId,
406 0, FALSE);
408 /* check the status of the sendEvent */
409 if (status < 0) {
410 /* remove the message from the List and return 'FALSE' */
411 ListMP_remove((ListMP_Handle)obj->remoteList, (ListMP_Elem *)msg);
412 retval = FALSE;
413 }
415 /* leave the gate */
416 GateMP_leave((GateMP_Handle)obj->gate, key);
418 return (retval);
419 }
421 /*
422 * ======== TransportShm_control ========
423 */
424 Bool TransportShm_control(TransportShm_Object *obj, UInt cmd, UArg cmdArg)
425 {
426 return (FALSE);
427 }
429 /*
430 * ======== TransportShm_getStatus ========
431 */
432 Int TransportShm_getStatus(TransportShm_Object *obj)
433 {
434 return (obj->status);
435 }
437 /*
438 *************************************************************************
439 * Module functions
440 *************************************************************************
441 */
443 /*
444 * ======== TransportShm_close ========
445 */
446 Void TransportShm_close(TransportShm_Handle *handle)
447 {
448 TransportShm_delete(handle);
449 }
451 /*
452 * ======== TransportShm_openByAddr ========
453 */
454 Int TransportShm_openByAddr(Ptr sharedAddr,
455 TransportShm_Handle *handlePtr,
456 Error_Block *eb)
457 {
458 TransportShm_Params params;
459 TransportShm_Attrs *attrs;
460 Int status;
461 UInt16 id;
463 if (sharedAddr == NULL) {
464 return (MessageQ_E_FAIL);
465 }
467 TransportShm_Params_init(¶ms);
469 /* Tell Instance_init() that we're opening */
470 params.openFlag = TRUE;
472 attrs = (TransportShm_Attrs *)sharedAddr;
473 id = SharedRegion_getId(sharedAddr);
475 /* Assert that the region is valid */
476 Assert_isTrue(id != SharedRegion_INVALIDREGIONID,
477 ti_sdo_ipc_Ipc_A_addrNotInSharedRegion);
479 /* invalidate the attrs before using it */
480 if (SharedRegion_isCacheEnabled(id)) {
481 Cache_inv(attrs, sizeof(TransportShm_Attrs), Cache_Type_ALL, TRUE);
482 }
484 /* set params field */
485 params.sharedAddr = sharedAddr;
486 params.priority = attrs->priority;
488 if (attrs->flag != TransportShm_UP) {
489 /* make sure transport is up */
490 *handlePtr = NULL;
491 status = MessageQ_E_NOTFOUND;
492 }
493 else {
494 /* Create the object */
495 *handlePtr = TransportShm_create(attrs->creatorProcId, ¶ms, eb);
496 if (*handlePtr == NULL) {
497 status = MessageQ_E_FAIL;
498 }
499 else {
500 status = MessageQ_S_SUCCESS;
501 }
502 }
504 return (status);
505 }
507 /*
508 * ======== TransportShm_sharedMemReq ========
509 */
510 SizeT TransportShm_sharedMemReq(const TransportShm_Params *params)
511 {
512 SizeT memReq, minAlign;
513 UInt16 regionId;
514 ListMP_Params listMPParams;
516 regionId = SharedRegion_getId(params->sharedAddr);
518 minAlign = Memory_getMaxDefaultTypeAlign();
519 if (SharedRegion_getCacheLineSize(regionId) > minAlign) {
520 minAlign = SharedRegion_getCacheLineSize(regionId);
521 }
523 /* for the Attrs structure */
524 memReq = _Ipc_roundup(sizeof(TransportShm_Attrs), minAlign);
526 /* for the second Attrs structure */
527 memReq += _Ipc_roundup(sizeof(TransportShm_Attrs), minAlign);
529 ListMP_Params_init(&listMPParams);
530 listMPParams.regionId = regionId;
532 /* for localListMP */
533 memReq += ListMP_sharedMemReq(&listMPParams);
535 /* for remoteListMP */
536 memReq += ListMP_sharedMemReq(&listMPParams);
538 return(memReq);
539 }
541 /*
542 * ======== TransportShm_setErrFxn ========
543 */
544 Void TransportShm_setErrFxn(TransportShm_ErrFxn errFxn)
545 {
546 /* Ignore errFxn */
547 }