xref: /freebsd/sys/contrib/ncsw/Peripherals/BM/bm_pool.c (revision cd0d51baaa4509a1db83251a601d34404d20c990)
1 /******************************************************************************
2 
3  � 1995-2003, 2004, 2005-2011 Freescale Semiconductor, Inc.
4  All rights reserved.
5 
6  This is proprietary source code of Freescale Semiconductor Inc.,
7  and its use is subject to the NetComm Device Drivers EULA.
8  The copyright notice above does not evidence any actual or intended
9  publication of such source code.
10 
11  ALTERNATIVELY, redistribution and use in source and binary forms, with
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14      * Redistributions of source code must retain the above copyright
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21        derived from this software without specific prior written permission.
22 
23  THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
24  EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
25  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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33  *
34 
35  **************************************************************************/
36 /******************************************************************************
37  @File          bm.c
38 
39  @Description   BM
40 *//***************************************************************************/
41 #include "error_ext.h"
42 #include "std_ext.h"
43 #include "string_ext.h"
44 #include "mem_ext.h"
45 #include "core_ext.h"
46 
47 #include "bm.h"
48 
49 
50 #define __ERR_MODULE__  MODULE_BM
51 
52 
53 /****************************************/
54 /*       static functions               */
55 /****************************************/
56 
57 /* (De)Registration of depletion notification callbacks */
58 static void depletion_link(t_BmPool *p_BmPool)
59 {
60     t_BmPortal *p_Portal = (t_BmPortal *)p_BmPool->h_BmPortal;
61 
62     NCSW_PLOCK(p_Portal);
63     p_Portal->depletionPoolsTable[p_BmPool->bpid] = p_BmPool;
64     bm_isr_bscn_mask(p_Portal->p_BmPortalLow, (uint8_t)p_BmPool->bpid, 1);
65     PUNLOCK(p_Portal);
66 }
67 
68 static void depletion_unlink(t_BmPool *p_BmPool)
69 {
70     t_BmPortal *p_Portal = (t_BmPortal *)p_BmPool->h_BmPortal;
71 
72     NCSW_PLOCK(p_Portal);
73     p_Portal->depletionPoolsTable[p_BmPool->bpid] = NULL;
74     bm_isr_bscn_mask(p_Portal->p_BmPortalLow, (uint8_t)p_BmPool->bpid, 0);
75     PUNLOCK(p_Portal);
76 }
77 
78 static t_Error BmPoolRelease(t_BmPool *p_BmPool,
79                              t_Handle h_BmPortal,
80                              struct bm_buffer *bufs,
81                              uint8_t num,
82                              uint32_t flags)
83 {
84     ASSERT_COND(num && (num <= 8));
85     if (p_BmPool->flags & BMAN_POOL_FLAG_NO_RELEASE)
86         return ERROR_CODE(E_INVALID_VALUE);
87 
88     /* Without stockpile, this API is a pass-through to the h/w operation */
89     if (!(p_BmPool->flags & BMAN_POOL_FLAG_STOCKPILE))
90         return BmPortalRelease(h_BmPortal, p_BmPool->bpid, bufs, num, flags);
91 
92     /* This needs some explanation. Adding the given buffers may take the
93      * stockpile over the threshold, but in fact the stockpile may already
94      * *be* over the threshold if a previous release-to-hw attempt had
95      * failed. So we have 3 cases to cover;
96      *   1. we add to the stockpile and don't hit the threshold,
97      *   2. we add to the stockpile, hit the threshold and release-to-hw,
98      *   3. we have to release-to-hw before adding to the stockpile
99      *      (not enough room in the stockpile for case 2).
100      * Our constraints on thresholds guarantee that in case 3, there must be
101      * at least 8 bufs already in the stockpile, so all release-to-hw ops
102      * are for 8 bufs. Despite all this, the API must indicate whether the
103      * given buffers were taken off the caller's hands, irrespective of
104      * whether a release-to-hw was attempted. */
105     while (num)
106     {
107         /* Add buffers to stockpile if they fit */
108         if ((p_BmPool->spFill + num) <= p_BmPool->spMaxBufs)
109         {
110             memcpy(PTR_MOVE(p_BmPool->sp, sizeof(struct bm_buffer) * (p_BmPool->spFill)),
111                    bufs,
112                    sizeof(struct bm_buffer) * num);
113             p_BmPool->spFill += num;
114             num = 0; /* --> will return success no matter what */
115         }
116         else
117         /* Do hw op if hitting the high-water threshold */
118         {
119             t_Error ret = BmPortalRelease(h_BmPortal,
120                                           p_BmPool->bpid,
121                                           (struct bm_buffer *)PTR_MOVE(p_BmPool->sp, sizeof(struct bm_buffer) * (p_BmPool->spFill - p_BmPool->spBufsCmd)),
122                                           p_BmPool->spBufsCmd,
123                                           flags);
124             if (ret)
125                 return (num ? ret : E_OK);
126             p_BmPool->spFill -= p_BmPool->spBufsCmd;
127         }
128     }
129 
130     return E_OK;
131 }
132 
133 static int BmPoolAcquire(t_BmPool *p_BmPool,t_Handle h_BmPortal,
134             struct bm_buffer *bufs, uint8_t num, uint32_t flags)
135 {
136     ASSERT_COND(IN_RANGE(1, num, 8));
137     if (p_BmPool->flags & BMAN_POOL_FLAG_ONLY_RELEASE)
138         return 0;
139 
140     /* Without stockpile, this API is a pass-through to the h/w operation */
141     if (!(p_BmPool->flags & BMAN_POOL_FLAG_STOCKPILE))
142         return BmPortalAcquire(h_BmPortal, p_BmPool->bpid, bufs, num);
143     /* Only need a h/w op if we'll hit the low-water thresh */
144     if (!(flags & BMAN_ACQUIRE_FLAG_STOCKPILE) &&
145             ((p_BmPool->spFill - num) < p_BmPool->spMinBufs))
146     {
147             p_BmPool->spFill += BmPortalAcquire(h_BmPortal,
148                                                p_BmPool->bpid,
149                                                (struct bm_buffer *)PTR_MOVE(p_BmPool->sp, sizeof(struct bm_buffer) * (p_BmPool->spFill)),
150                                                p_BmPool->spBufsCmd);
151     }
152     else if (p_BmPool->spFill < num)
153         return 0;
154     if (!p_BmPool->spFill)
155         return 0;
156     memcpy(bufs,
157            PTR_MOVE(p_BmPool->sp, sizeof(struct bm_buffer) * (p_BmPool->spFill - num)),
158            sizeof(struct bm_buffer) * num);
159     p_BmPool->spFill -= num;
160     return num;
161 }
162 
163 static t_Error BmPoolFree(t_BmPool *p_BmPool, bool discardBuffers)
164 {
165     t_Handle    h_BufContext;
166     void        *p_Data;
167 
168     ASSERT_COND(p_BmPool);
169 
170     if (!p_BmPool->shadowMode)
171     {
172         if (p_BmPool->flags & BMAN_POOL_FLAG_DEPLETION)
173         {
174             depletion_unlink(p_BmPool);
175             BmUnSetPoolThresholds(p_BmPool->h_Bm, p_BmPool->bpid);
176         }
177         while (TRUE)
178         {
179             p_Data = BM_POOL_GetBuf(p_BmPool, p_BmPool->h_BmPortal);
180             if (!p_Data)
181                 break;
182             h_BufContext = BM_POOL_GetBufferContext(p_BmPool, p_Data);
183             if (!discardBuffers)
184                 p_BmPool->bufferPoolInfo.f_PutBuf(p_BmPool->bufferPoolInfo.h_BufferPool, p_Data, h_BufContext);
185         }
186         BmBpidPut(p_BmPool->h_Bm, p_BmPool->bpid);
187     }
188 
189     if (p_BmPool->sp)
190         XX_Free(p_BmPool->sp);
191 
192     XX_Free(p_BmPool);
193 
194     return E_OK;
195 }
196 
197 /****************************************/
198 /*       API Init unit functions        */
199 /****************************************/
200 
201 t_Handle BM_POOL_Config(t_BmPoolParam *p_BmPoolParam)
202 {
203     t_BmPool        *p_BmPool;
204 
205     SANITY_CHECK_RETURN_VALUE(p_BmPoolParam, E_INVALID_HANDLE, NULL);
206     SANITY_CHECK_RETURN_VALUE(p_BmPoolParam->h_Bm, E_INVALID_HANDLE, NULL);
207     SANITY_CHECK_RETURN_VALUE((p_BmPoolParam->shadowMode ||
208                                (p_BmPoolParam->bufferPoolInfo.h_BufferPool &&
209                                p_BmPoolParam->bufferPoolInfo.f_GetBuf &&
210                                p_BmPoolParam->bufferPoolInfo.f_PutBuf &&
211                                p_BmPoolParam->bufferPoolInfo.bufferSize)), E_INVALID_STATE, NULL);
212 
213     p_BmPool = (t_BmPool*)XX_Malloc(sizeof(t_BmPool));
214     if (!p_BmPool)
215     {
216         REPORT_ERROR(MAJOR, E_NO_MEMORY, ("BM Pool obj!!!"));
217         return NULL;
218     }
219     memset(p_BmPool, 0, sizeof(t_BmPool));
220 
221     p_BmPool->p_BmPoolDriverParams = (t_BmPoolDriverParams *)XX_Malloc(sizeof(t_BmPoolDriverParams));
222     if (!p_BmPool->p_BmPoolDriverParams)
223     {
224         XX_Free(p_BmPool);
225         REPORT_ERROR(MAJOR, E_NO_MEMORY, ("Bm Pool driver parameters"));
226         return NULL;
227     }
228     memset(p_BmPool->p_BmPoolDriverParams, 0, sizeof(t_BmPoolDriverParams));
229 
230     p_BmPool->h_Bm          = p_BmPoolParam->h_Bm;
231     p_BmPool->h_BmPortal    = p_BmPoolParam->h_BmPortal;
232     p_BmPool->h_App         = p_BmPoolParam->h_App;
233     p_BmPool->numOfBuffers  = p_BmPoolParam->numOfBuffers;
234     p_BmPool->shadowMode    = p_BmPoolParam->shadowMode;
235 
236     if (!p_BmPool->h_BmPortal)
237     {
238         p_BmPool->h_BmPortal = BmGetPortalHandle(p_BmPool->h_Bm);
239         SANITY_CHECK_RETURN_VALUE(p_BmPool->h_BmPortal, E_INVALID_HANDLE, NULL);
240     }
241 
242     memcpy(&p_BmPool->bufferPoolInfo, &p_BmPoolParam->bufferPoolInfo, sizeof(t_BufferPoolInfo));
243     if (!p_BmPool->bufferPoolInfo.f_PhysToVirt)
244         p_BmPool->bufferPoolInfo.f_PhysToVirt = XX_PhysToVirt;
245     if (!p_BmPool->bufferPoolInfo.f_VirtToPhys)
246         p_BmPool->bufferPoolInfo.f_VirtToPhys = XX_VirtToPhys;
247 
248     p_BmPool->p_BmPoolDriverParams->dynamicBpid     = DEFAULT_dynamicBpid;
249     p_BmPool->p_BmPoolDriverParams->useDepletion    = DEFAULT_useDepletion;
250     p_BmPool->p_BmPoolDriverParams->useStockpile    = DEFAULT_useStockpile;
251 
252     if (p_BmPool->shadowMode)
253     {
254         p_BmPool->numOfBuffers = 0;
255         BM_POOL_ConfigBpid(p_BmPool, p_BmPoolParam->bpid);
256     }
257 
258     return p_BmPool;
259 }
260 
261 t_Error BM_POOL_Init(t_Handle h_BmPool)
262 {
263     t_BmPool        *p_BmPool = (t_BmPool *)h_BmPool;
264     t_Error         err;
265 
266     SANITY_CHECK_RETURN_ERROR(p_BmPool, E_INVALID_HANDLE);
267     SANITY_CHECK_RETURN_ERROR(p_BmPool->p_BmPoolDriverParams, E_INVALID_HANDLE);
268 
269     p_BmPool->flags |= (p_BmPool->p_BmPoolDriverParams->dynamicBpid)?BMAN_POOL_FLAG_DYNAMIC_BPID:0;
270     p_BmPool->flags |= (p_BmPool->p_BmPoolDriverParams->useStockpile)?BMAN_POOL_FLAG_STOCKPILE:0;
271     p_BmPool->flags |= ((!p_BmPool->shadowMode) &&
272                         (p_BmPool->p_BmPoolDriverParams->useDepletion))?BMAN_POOL_FLAG_DEPLETION:0;
273 
274     if (p_BmPool->flags & BMAN_POOL_FLAG_DYNAMIC_BPID)
275     {
276         if((p_BmPool->bpid = (uint8_t)BmBpidGet(p_BmPool->h_Bm, FALSE, (uint32_t)0)) == (uint8_t)ILLEGAL_BASE)
277         {
278             BM_POOL_Free(p_BmPool);
279             RETURN_ERROR(CRITICAL, E_INVALID_STATE, ("can't allocate new dynamic pool id"));
280         }
281     }
282     else
283     {
284         if (BmBpidGet(p_BmPool->h_Bm, TRUE, (uint32_t)p_BmPool->bpid) == (uint32_t)ILLEGAL_BASE)
285         {
286             BM_POOL_Free(p_BmPool);
287             RETURN_ERROR(CRITICAL, E_INVALID_STATE, ("can't force pool id %d", p_BmPool->bpid));
288         }
289     }
290     if (p_BmPool->flags & BMAN_POOL_FLAG_DEPLETION)
291     {
292         if(BmSetPoolThresholds(p_BmPool->h_Bm, p_BmPool->bpid, p_BmPool->p_BmPoolDriverParams->depletionThresholds))
293         {
294             BM_POOL_Free(p_BmPool);
295             RETURN_ERROR(MAJOR, E_INVALID_STATE, ("can't set thresh for pool bpid %d",p_BmPool->bpid));
296         }
297 
298         depletion_link(p_BmPool);
299     }
300 
301     if (p_BmPool->flags & BMAN_POOL_FLAG_STOCKPILE)
302     {
303         p_BmPool->sp = (struct bm_buffer *)XX_Malloc(sizeof(struct bm_buffer) * p_BmPool->spMaxBufs);
304         if (!p_BmPool->sp)
305         {
306             BM_POOL_Free(p_BmPool);
307             RETURN_ERROR(MAJOR, E_NO_MEMORY, ("Bm Pool Stockpile"));
308         }
309         memset(p_BmPool->sp, 0, sizeof(struct bm_buffer) * p_BmPool->spMaxBufs);
310     }
311 
312     XX_Free(p_BmPool->p_BmPoolDriverParams);
313     p_BmPool->p_BmPoolDriverParams = NULL;
314 
315     /*******************/
316     /* Create buffers  */
317     /*******************/
318     if ((err = BM_POOL_FillBufs (p_BmPool, p_BmPool->h_BmPortal, p_BmPool->numOfBuffers)) != E_OK)
319     {
320         BM_POOL_Free(p_BmPool);
321         RETURN_ERROR(MAJOR, err, NO_MSG);
322     }
323 
324     return E_OK;
325 }
326 
327 t_Error BM_POOL_Free(t_Handle h_BmPool)
328 {
329     SANITY_CHECK_RETURN_ERROR(h_BmPool, E_INVALID_HANDLE);
330 
331     return BmPoolFree(h_BmPool, FALSE);
332 }
333 
334 t_Error  BM_POOL_ConfigBpid(t_Handle h_BmPool, uint8_t bpid)
335 {
336     t_BmPool            *p_BmPool   = (t_BmPool *)h_BmPool;
337 
338     SANITY_CHECK_RETURN_ERROR(p_BmPool, E_INVALID_HANDLE);
339     SANITY_CHECK_RETURN_ERROR(p_BmPool->p_BmPoolDriverParams, E_INVALID_HANDLE);
340     SANITY_CHECK_RETURN_ERROR(bpid < BM_MAX_NUM_OF_POOLS, E_INVALID_VALUE);
341 
342     p_BmPool->p_BmPoolDriverParams->dynamicBpid = FALSE;
343     p_BmPool->bpid = bpid;
344 
345     return E_OK;
346 }
347 
348 
349 t_Error  BM_POOL_ConfigDepletion(t_Handle h_BmPool, t_BmDepletionCallback *f_Depletion, uint32_t *p_Thresholds)
350 {
351     t_BmPool            *p_BmPool   = (t_BmPool *)h_BmPool;
352 
353     SANITY_CHECK_RETURN_ERROR(p_BmPool, E_INVALID_HANDLE);
354     SANITY_CHECK_RETURN_ERROR(p_BmPool->p_BmPoolDriverParams, E_INVALID_HANDLE);
355     SANITY_CHECK_RETURN_ERROR(f_Depletion, E_INVALID_HANDLE);
356 
357     p_BmPool->p_BmPoolDriverParams->useDepletion = TRUE;
358     p_BmPool->f_Depletion = f_Depletion;
359     memcpy(&p_BmPool->p_BmPoolDriverParams->depletionThresholds,
360            p_Thresholds,
361            sizeof(p_BmPool->p_BmPoolDriverParams->depletionThresholds));
362 
363     return E_OK;
364 }
365 
366 t_Error  BM_POOL_ConfigStockpile(t_Handle h_BmPool, uint16_t maxBuffers, uint16_t minBuffers)
367 {
368     t_BmPool            *p_BmPool   = (t_BmPool *)h_BmPool;
369 
370     SANITY_CHECK_RETURN_ERROR(p_BmPool, E_INVALID_HANDLE);
371     SANITY_CHECK_RETURN_ERROR(p_BmPool->p_BmPoolDriverParams, E_INVALID_HANDLE);
372     SANITY_CHECK_RETURN_ERROR(maxBuffers, E_INVALID_STATE);
373     SANITY_CHECK_RETURN_ERROR(maxBuffers >= minBuffers, E_INVALID_STATE);
374     SANITY_CHECK_RETURN_ERROR((p_BmPool->shadowMode ||
375                               ((maxBuffers * 2) <= p_BmPool->numOfBuffers)),
376                               E_INVALID_STATE);
377 
378     p_BmPool->p_BmPoolDriverParams->useStockpile = TRUE;
379     p_BmPool->spMaxBufs     = maxBuffers;
380     p_BmPool->spMinBufs     = minBuffers;
381     p_BmPool->spBufsCmd     = DEFAULT_numOfBufsPerCmd;
382 
383     SANITY_CHECK_RETURN_ERROR((p_BmPool->spMaxBufs >=
384                                (p_BmPool->spMinBufs + p_BmPool->spBufsCmd)),
385                               E_INVALID_STATE);
386 
387     return E_OK;
388 }
389 
390 t_Error  BM_POOL_ConfigBuffContextMode(t_Handle h_BmPool, bool en)
391 {
392     t_BmPool            *p_BmPool   = (t_BmPool *)h_BmPool;
393 
394     SANITY_CHECK_RETURN_ERROR(p_BmPool, E_INVALID_HANDLE);
395     SANITY_CHECK_RETURN_ERROR(p_BmPool->p_BmPoolDriverParams, E_INVALID_HANDLE);
396 
397     p_BmPool->noBuffCtxt = !en;
398 
399     return E_OK;
400 }
401 
402 void * BM_POOL_GetBuf(t_Handle h_BmPool, t_Handle h_BmPortal)
403 {
404     t_BmPool            *p_BmPool   = (t_BmPool *)h_BmPool;
405     struct bm_buffer    bufs[1];
406     uint8_t             retBufsNum;
407     uint64_t            physAddr;
408     uint32_t            flags = 0;
409 
410     SANITY_CHECK_RETURN_VALUE(p_BmPool, E_INVALID_HANDLE, NULL);
411     SANITY_CHECK_RETURN_VALUE(!p_BmPool->p_BmPoolDriverParams, E_INVALID_HANDLE, NULL);
412     SANITY_CHECK_RETURN_VALUE(p_BmPool->bufferPoolInfo.f_PhysToVirt, E_INVALID_STATE, NULL);
413 
414     if (!h_BmPortal)
415     {
416         if (p_BmPool->h_BmPortal)
417             h_BmPortal = p_BmPool->h_BmPortal;
418         else
419         {
420             SANITY_CHECK_RETURN_VALUE(p_BmPool->h_Bm, E_INVALID_HANDLE, NULL);
421             h_BmPortal = BmGetPortalHandle(p_BmPool->h_Bm);
422             SANITY_CHECK_RETURN_VALUE(h_BmPortal, E_INVALID_HANDLE, NULL);
423         }
424     }
425 
426     retBufsNum = (uint8_t)BmPoolAcquire(p_BmPool, h_BmPortal, bufs, 1, flags);
427     if (!retBufsNum)
428     {
429         REPORT_ERROR(TRACE, E_NOT_AVAILABLE, ("buffer"));
430         return NULL;
431     }
432     physAddr  = (uint64_t)bufs[0].lo;
433     physAddr |= (uint64_t)(((uint64_t)bufs[0].hi << 32) & 0x000000ff00000000LL);
434     DBG(TRACE,("Get Buffer : poolId %d, address 0x%016llx",
435                p_BmPool->bpid,
436                p_BmPool->bufferPoolInfo.f_PhysToVirt((physAddress_t)physAddr)));
437 
438     return p_BmPool->bufferPoolInfo.f_PhysToVirt((physAddress_t)physAddr);
439 }
440 
441 t_Error BM_POOL_PutBuf(t_Handle h_BmPool, t_Handle h_BmPortal, void *p_Buff)
442 {
443     t_BmPool            *p_BmPool   = (t_BmPool *)h_BmPool;
444     uint64_t            physAddress;
445     struct bm_buffer    bufs[1];
446 
447     SANITY_CHECK_RETURN_ERROR(p_BmPool, E_INVALID_HANDLE);
448     SANITY_CHECK_RETURN_ERROR(!p_BmPool->p_BmPoolDriverParams, E_INVALID_STATE);
449     SANITY_CHECK_RETURN_ERROR(p_Buff, E_NULL_POINTER);
450 
451     physAddress = (uint64_t)(XX_VirtToPhys(p_Buff));
452 
453     bufs[0].bpid = p_BmPool->bpid;
454     bufs[0].hi = (uint8_t)((physAddress & 0x000000ff00000000LL) >> 32);
455     bufs[0].lo = (uint32_t)(physAddress & 0xffffffff);
456 
457     DBG(TRACE,("Put Buffer : poolId %d, address 0x%016llx, phys 0x%016llx",
458                p_BmPool->bpid, (uint64_t)PTR_TO_UINT(p_Buff), physAddress));
459 
460     if (!h_BmPortal)
461     {
462         if (p_BmPool->h_BmPortal)
463             h_BmPortal = p_BmPool->h_BmPortal;
464         else
465         {
466             SANITY_CHECK_RETURN_ERROR(p_BmPool->h_Bm, E_INVALID_HANDLE);
467             h_BmPortal = BmGetPortalHandle(p_BmPool->h_Bm);
468             SANITY_CHECK_RETURN_ERROR(h_BmPortal, E_INVALID_HANDLE);
469         }
470     }
471 
472     return BmPoolRelease(p_BmPool, h_BmPortal, bufs, 1, BMAN_RELEASE_FLAG_WAIT);
473 }
474 
475 t_Error BM_POOL_FillBufs(t_Handle h_BmPool, t_Handle h_BmPortal, uint32_t numBufs)
476 {
477     t_BmPool    *p_BmPool   = (t_BmPool *)h_BmPool;
478 
479     SANITY_CHECK_RETURN_ERROR(p_BmPool, E_INVALID_HANDLE);
480     SANITY_CHECK_RETURN_ERROR(!p_BmPool->p_BmPoolDriverParams, E_INVALID_STATE);
481 
482     if (!h_BmPortal)
483     {
484         if (p_BmPool->h_BmPortal)
485             h_BmPortal = p_BmPool->h_BmPortal;
486         else
487         {
488             SANITY_CHECK_RETURN_ERROR(p_BmPool->h_Bm, E_INVALID_HANDLE);
489             h_BmPortal = BmGetPortalHandle(p_BmPool->h_Bm);
490             SANITY_CHECK_RETURN_ERROR(h_BmPortal, E_INVALID_HANDLE);
491         }
492     }
493 
494     while (numBufs--)
495     {
496         uint8_t             *p_Data;
497         t_Error             res;
498         t_Handle            h_BufContext;
499 
500         p_Data = p_BmPool->bufferPoolInfo.f_GetBuf(p_BmPool->bufferPoolInfo.h_BufferPool, &h_BufContext);
501         if(!p_Data)
502             RETURN_ERROR(MAJOR, E_INVALID_STATE, ("run-out of buffers for bpid %d",p_BmPool->bpid));
503 
504         if (!p_BmPool->noBuffCtxt)
505             *(t_Handle *)(p_Data - sizeof(t_Handle)) = h_BufContext;
506 
507         if ((res = BM_POOL_PutBuf(p_BmPool, h_BmPortal, p_Data)) != E_OK)
508             RETURN_ERROR(CRITICAL, res, ("Seeding reserved buffer pool failed"));
509     }
510 
511     return E_OK;
512 }
513 
514 uint8_t BM_POOL_GetId(t_Handle h_BmPool)
515 {
516     t_BmPool            *p_BmPool   = (t_BmPool *)h_BmPool;
517 
518     SANITY_CHECK_RETURN_VALUE(p_BmPool, E_INVALID_HANDLE, 0);
519     SANITY_CHECK_RETURN_VALUE(!p_BmPool->p_BmPoolDriverParams, E_INVALID_HANDLE, 0);
520 
521     return p_BmPool->bpid;
522 }
523 
524 uint16_t BM_POOL_GetBufferSize(t_Handle h_BmPool)
525 {
526     t_BmPool            *p_BmPool   = (t_BmPool *)h_BmPool;
527 
528     SANITY_CHECK_RETURN_VALUE(p_BmPool, E_INVALID_HANDLE, 0);
529     SANITY_CHECK_RETURN_VALUE(!p_BmPool->p_BmPoolDriverParams, E_INVALID_HANDLE, 0);
530 
531     return p_BmPool->bufferPoolInfo.bufferSize;
532 }
533 
534 t_Handle BM_POOL_GetBufferContext(t_Handle h_BmPool, void *p_Buff)
535 {
536     t_BmPool            *p_BmPool   = (t_BmPool *)h_BmPool;
537 
538     SANITY_CHECK_RETURN_VALUE(p_BmPool, E_INVALID_HANDLE, NULL);
539     SANITY_CHECK_RETURN_VALUE(!p_BmPool->p_BmPoolDriverParams, E_INVALID_HANDLE, NULL);
540     SANITY_CHECK_RETURN_VALUE(p_Buff, E_NULL_POINTER, NULL);
541 
542     if (p_BmPool->noBuffCtxt)
543         return NULL;
544 
545     return *(t_Handle *)PTR_MOVE(p_Buff, -(sizeof(t_Handle)));
546 }
547 
548 uint32_t BM_POOL_GetCounter(t_Handle h_BmPool, e_BmPoolCounters counter)
549 {
550     t_BmPool            *p_BmPool   = (t_BmPool *)h_BmPool;
551 
552     SANITY_CHECK_RETURN_VALUE(p_BmPool, E_INVALID_HANDLE, 0);
553     SANITY_CHECK_RETURN_VALUE(!p_BmPool->p_BmPoolDriverParams, E_INVALID_HANDLE, 0);
554 
555     switch(counter)
556     {
557         case(e_BM_POOL_COUNTERS_CONTENT):
558             return BmGetCounter(p_BmPool->h_Bm, e_BM_IM_COUNTERS_POOL_CONTENT, p_BmPool->bpid);
559         case(e_BM_POOL_COUNTERS_SW_DEPLETION):
560             return (p_BmPool->swDepletionCount +=
561                 BmGetCounter(p_BmPool->h_Bm, e_BM_IM_COUNTERS_POOL_SW_DEPLETION, p_BmPool->bpid));
562         case(e_BM_POOL_COUNTERS_HW_DEPLETION):
563             return (p_BmPool->hwDepletionCount +=
564                 BmGetCounter(p_BmPool->h_Bm, e_BM_IM_COUNTERS_POOL_HW_DEPLETION, p_BmPool->bpid));
565         default:
566             break;
567     }
568 
569     /* should never get here */
570     ASSERT_COND(FALSE);
571 
572     return 0;
573 }
574