src/add-ons/accelerants/intel_extreme/memory.cpp

   1 /*
   2  * Copyright 2006-2008, Haiku, Inc. All Rights Reserved.
   3  * Distributed under the terms of the MIT License.
   4  *
   5  * Authors:
   6  *              Axel Dörfler, axeld@pinc-software.de
   7  */
   8
   9
  10 #include "accelerant.h"
  11 #include "intel_extreme.h"
  12
  13 #include <errno.h>
  14 #include <unistd.h>
  15
  16
  17 #undef TRACE
  18 //#define TRACE_MEMORY
  19 #ifdef TRACE_MEMORY
  20 #       define TRACE(x...) _sPrintf("intel_extreme accelerant:" x)
  21 #else
  22 #       define TRACE(x...)
  23 #endif
  24
  25 #define ERROR(x...) _sPrintf("intel_extreme accelerant: " x)
  26 #define CALLED(x...) TRACE("CALLED %s\n", __PRETTY_FUNCTION__)
  27
  28
  29 void
  30 intel_free_memory(addr_t base)
  31 {
  32         if (base == 0)
  33                 return;
  34
  35         intel_free_graphics_memory freeMemory;
  36         freeMemory.magic = INTEL_PRIVATE_DATA_MAGIC;
  37         freeMemory.buffer_base = base;
  38
  39         ioctl(gInfo->device, INTEL_FREE_GRAPHICS_MEMORY, &freeMemory,
  40                 sizeof(freeMemory));
  41 }
  42
  43
  44 status_t
  45 intel_allocate_memory(size_t size, uint32 flags, addr_t &base)
  46 {
  47         intel_allocate_graphics_memory allocMemory;
  48         allocMemory.magic = INTEL_PRIVATE_DATA_MAGIC;
  49         allocMemory.size = size;
  50         allocMemory.alignment = 0;
  51         allocMemory.flags = flags;
  52
  53         if (ioctl(gInfo->device, INTEL_ALLOCATE_GRAPHICS_MEMORY, &allocMemory,
  54                         sizeof(allocMemory)) < 0)
  55                 return errno;
  56
  57         base = allocMemory.buffer_base;
  58         return B_OK;
  59 }
  60