omx/mm-video/qdsp6/vdec/src/pmem.c

/*--------------------------------------------------------------------------
Copyright (c) 2009, Code Aurora Forum. All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.
    * Neither the name of Code Aurora nor
      the names of its contributors may be used to endorse or promote
      products derived from this software without specific prior written
      permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NON-INFRINGEMENT ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
--------------------------------------------------------------------------*/
#ifdef QLE_BUILD
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include <stddef.h>
#include <unistd.h>
#include <pthread.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/mman.h>

#include "pmem2.h"
#include "pmem.h"
#include "../../../../../modules/pmem/inc-user/pmem_module.h"

static int pmem_fd;

int pmem_alloc(struct pmem *pMem, unsigned nSize)
{
   printf("pmem_alloc : Size - [%d]\n", nSize);

   if (!pMem)
      return -1;

   struct pmem_region_info sRegion;
   const int nFlags = 5;   // bit 0   disable write through cache
   // bit 1   1 MB aligned
   // bit 2   attach region
   nSize = (nSize + 4095) & (~4095);
   pMem->fd = (int)pmem2_malloc(nSize, PMEM_EBI1, nFlags, &pMem->data);
   if ((pMem->data == NULL) || (pMem->fd < 0)) {
      printf("error could not allocate pmem");
      return -1;
   }
   pmem2_get_region_info(pMem->fd, &sRegion);
   pMem->phys = (void *)sRegion.paddr;
   pMem->size = nSize;

   printf("PMEM ALLOC: Allocation succesfull\n");

   return 0;
}

void pmem_free(struct pmem *pmem)
{
   close(pmem->fd);
   pmem->fd = -1;
   munmap(pmem->data, pmem->size);
}

#else
#include <stdio.h>
#include <fcntl.h>
#include "pmem.h"
#include "qutility.h"

#ifndef T_WINNT
#include <sys/mman.h>
#include <sys/ioctl.h>
struct file;
#include <linux/android_pmem.h>
#endif

#define USE_SMI 0      /* do NOT enable if you're running the full system */

int pmem_alloc(struct pmem *pmem, unsigned sz)
{
#ifdef T_WINNT
   sz = (sz + 4095) & (~4095);
   pmem->size = sz;
   pmem->fd = 0;
   pmem->data = (void *)malloc(sz);
   pmem->phys = (unsigned)pmem->data;
   return 0;
#else
   struct pmem_region region;

#if USE_SMI
   pmem->fd = open("/dev/pmem_gpu0", O_RDWR);
#elif defined(USE_PMEM_ADSP_CACHED)
   pmem->fd = open("/dev/pmem_adsp", O_RDWR);
#else
   //uncached behavior
   pmem->fd = open("/dev/pmem_adsp", O_RDWR|O_SYNC);
#endif

   if (pmem->fd < 0) {
      perror("cannot open pmem device");
      return -1;
   }
   //sz = (sz + 4095) & (~4095);
   pmem->size = sz;
   pmem->data = mmap(NULL, sz, PROT_READ | PROT_WRITE,
           MAP_SHARED, pmem->fd, 0);

   if (pmem->data == MAP_FAILED) {
      perror("pmem mmap failed");
      close(pmem->fd);
      pmem->fd = -1;
      return -1;
   }

   if (ioctl(pmem->fd, PMEM_GET_PHYS, &region)) {
      perror("pmem phys lookup failed");
      close(pmem->fd);
      munmap(pmem->data, pmem->size);
      return -1;
   }
   pmem->phys = region.offset;
   printx("PMEM %p (phys=%08x)\n", pmem->data, pmem->phys);
   return 0;
#endif
}

void pmem_free(struct pmem *pmem)
{
#ifdef T_WINNT
   pmem->fd = 0;
   pmem->phys = 0;
   pmem->size = 0;
   free(pmem->data);
   pmem->data = 0;
#else
   if(pmem->fd >= 0) {
       close(pmem->fd);
       pmem->fd = -1;
       munmap(pmem->data, pmem->size);
   }
#endif
}

#ifdef USE_PMEM_ADSP_CACHED
void pmem_cachemaint(int pmem_id, void *addr, unsigned size, PMEM_CACHE_OP op)
{
   struct pmem_addr pmem_addr;
   pmem_addr.vaddr = (unsigned long)addr;
   pmem_addr.offset = 0;
   pmem_addr.length = size;
   int errno_pmem = 0;

   switch(op) {
   case PMEM_CACHE_FLUSH: //Cache clean/flush operation
   {
      if (errno_pmem = ioctl(pmem_id, PMEM_CLEAN_CACHES, &pmem_addr)) {
         printf("pmem_cleancache Error !!!!  errno=%d\n", errno_pmem);
      }
      break;
   }

   case PMEM_CACHE_INVALIDATE: //Cache invalidate operation
   {
      if (errno_pmem = ioctl(pmem_id, PMEM_INV_CACHES, &pmem_addr)) {
         printf("pmem_invcache Error !!!!  errno=%d\n", errno_pmem);
      }
      break;
   }

   case PMEM_CACHE_FLUSH_INVALIDATE: //Cache clean+invalidate operation
   {
      if (errno_pmem = ioctl(pmem_id, PMEM_CLEAN_INV_CACHES, &pmem_addr)) {
          printf("pmem_clean_inv_cache Error !!!!  errno=%d\n", errno_pmem);
      }
      break;
   }

   default:
      printf("pmem_cachemaint: Invalid cache operation.!!!!\n");
      break;
   }
}
#endif
#endif //QLE_BUILD