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      1 /**************************************************************************
      2  *
      3  * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, TX., USA
      4  * All Rights Reserved.
      5  * Copyright 2009 VMware, Inc., Palo Alto, CA., USA
      6  * All Rights Reserved.
      7  *
      8  * Permission is hereby granted, free of charge, to any person obtaining a
      9  * copy of this software and associated documentation files (the
     10  * "Software"), to deal in the Software without restriction, including
     11  * without limitation the rights to use, copy, modify, merge, publish,
     12  * distribute, sub license, and/or sell copies of the Software, and to
     13  * permit persons to whom the Software is furnished to do so, subject to
     14  * the following conditions:
     15  *
     16  * The above copyright notice and this permission notice (including the
     17  * next paragraph) shall be included in all copies or substantial portions
     18  * of the Software.
     19  *
     20  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     21  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     22  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
     23  * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
     24  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
     25  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
     26  * USE OR OTHER DEALINGS IN THE SOFTWARE.
     27  *
     28  **************************************************************************/
     29 /*
     30  * Authors: Thomas Hellstrm <thomas-at-tungstengraphics-dot-com>
     31  */
     32 
     33 #ifdef HAVE_CONFIG_H
     34 #include "config.h"
     35 #endif
     36 
     37 #include <stdlib.h>
     38 #include <errno.h>
     39 #include "wsbm_pool.h"
     40 #include "wsbm_manager.h"
     41 
     42 struct _WsbmMallocBuffer
     43 {
     44     struct _WsbmBufStorage buf;
     45     size_t size;
     46     void *mem;
     47 };
     48 
     49 static inline struct _WsbmMallocBuffer *
     50 mallocBuf(struct _WsbmBufStorage *buf)
     51 {
     52     return containerOf(buf, struct _WsbmMallocBuffer, buf);
     53 }
     54 
     55 static struct _WsbmBufStorage *
     56 pool_create(struct _WsbmBufferPool *pool,
     57         unsigned long size, uint32_t placement, unsigned alignment __attribute__ ((unused)))
     58 {
     59     struct _WsbmMallocBuffer *mBuf = malloc(size + sizeof(*mBuf) + 16);
     60 
     61     if (!mBuf)
     62 	return NULL;
     63 
     64     wsbmBufStorageInit(&mBuf->buf, pool);
     65     mBuf->size = size;
     66     mBuf->mem = (void *)((unsigned long)mBuf + sizeof(*mBuf));
     67     if ((placement & WSBM_PL_MASK_MEM) != WSBM_PL_FLAG_SYSTEM)
     68 	abort();
     69 
     70     return &mBuf->buf;
     71 }
     72 
     73 static void
     74 pool_destroy(struct _WsbmBufStorage **buf)
     75 {
     76     free(mallocBuf(*buf));
     77     *buf = NULL;
     78 }
     79 
     80 static int
     81 pool_waitIdle(struct _WsbmBufStorage *buf __attribute__ ((unused)), int lazy __attribute__ ((unused)))
     82 {
     83     return 0;
     84 }
     85 
     86 static int
     87 pool_map(struct _WsbmBufStorage *buf, unsigned mode __attribute__ ((unused)), void **virtual __attribute__ ((unused)))
     88 {
     89     *virtual = mallocBuf(buf)->mem;
     90     return 0;
     91 }
     92 
     93 static void
     94 pool_unmap(struct _WsbmBufStorage *buf __attribute__ ((unused)))
     95 {
     96     ;
     97 }
     98 
     99 static int
    100 pool_syncforcpu(struct _WsbmBufStorage *buf __attribute__ ((unused)), unsigned mode __attribute__ ((unused)))
    101 {
    102     return 0;
    103 }
    104 
    105 static void
    106 pool_releasefromcpu(struct _WsbmBufStorage *buf __attribute__ ((unused)), unsigned mode __attribute__ ((unused)))
    107 {
    108     ;
    109 }
    110 
    111 static unsigned long
    112 pool_offset(struct _WsbmBufStorage *buf __attribute__ ((unused)))
    113 {
    114     /*
    115      * BUG
    116      */
    117     abort();
    118     return 0UL;
    119 }
    120 
    121 static unsigned long
    122 pool_poolOffset(struct _WsbmBufStorage *buf __attribute__ ((unused)))
    123 {
    124     /*
    125      * BUG
    126      */
    127     abort();
    128 }
    129 
    130 static uint32_t
    131 pool_placement(struct _WsbmBufStorage *buf __attribute__ ((unused)))
    132 {
    133     return WSBM_PL_FLAG_SYSTEM | WSBM_PL_FLAG_CACHED;
    134 }
    135 
    136 static unsigned long
    137 pool_size(struct _WsbmBufStorage *buf)
    138 {
    139     return mallocBuf(buf)->size;
    140 }
    141 
    142 static void
    143 pool_fence(struct _WsbmBufStorage *buf __attribute__ ((unused)), struct _WsbmFenceObject *fence __attribute__ ((unused)))
    144 {
    145     abort();
    146 }
    147 
    148 static struct _WsbmKernelBuf *
    149 pool_kernel(struct _WsbmBufStorage *buf __attribute__ ((unused)))
    150 {
    151     abort();
    152     return NULL;
    153 }
    154 
    155 static void
    156 pool_takedown(struct _WsbmBufferPool *pool)
    157 {
    158     free(pool);
    159 }
    160 
    161 struct _WsbmBufferPool *
    162 wsbmMallocPoolInit(void)
    163 {
    164     struct _WsbmBufferPool *pool;
    165 
    166     pool = (struct _WsbmBufferPool *)calloc(1, sizeof(*pool));
    167     if (!pool)
    168 	return NULL;
    169 
    170     pool->fd = -1;
    171     pool->map = &pool_map;
    172     pool->unmap = &pool_unmap;
    173     pool->syncforcpu = &pool_syncforcpu;
    174     pool->releasefromcpu = &pool_releasefromcpu;
    175     pool->destroy = &pool_destroy;
    176     pool->offset = &pool_offset;
    177     pool->poolOffset = &pool_poolOffset;
    178     pool->placement = &pool_placement;
    179     pool->size = &pool_size;
    180     pool->create = &pool_create;
    181     pool->fence = &pool_fence;
    182     pool->kernel = &pool_kernel;
    183     pool->validate = NULL;
    184     pool->waitIdle = &pool_waitIdle;
    185     pool->takeDown = &pool_takedown;
    186     return pool;
    187 }
    188