1 | /* $Id: alloc-r0drv-haiku.c 43403 2012-09-22 11:48:24Z vboxsync $ */
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2 | /** @file
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3 | * IPRT - Memory Allocation, Ring-0 Driver, Haiku.
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4 | */
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5 |
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6 | /*
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7 | * Copyright (C) 2012 Oracle Corporation
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8 | *
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9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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10 | * available from http://www.virtualbox.org. This file is free software;
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11 | * you can redistribute it and/or modify it under the terms of the GNU
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12 | * General Public License (GPL) as published by the Free Software
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13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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16 | *
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17 | * The contents of this file may alternatively be used under the terms
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18 | * of the Common Development and Distribution License Version 1.0
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19 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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20 | * VirtualBox OSE distribution, in which case the provisions of the
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21 | * CDDL are applicable instead of those of the GPL.
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22 | *
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23 | * You may elect to license modified versions of this file under the
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24 | * terms and conditions of either the GPL or the CDDL or both.
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25 | */
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26 |
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27 |
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28 | /*******************************************************************************
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29 | * Header Files *
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30 | *******************************************************************************/
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31 | #include "the-haiku-kernel.h"
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32 | #include "internal/iprt.h"
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33 | #include <iprt/mem.h>
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34 | #include <iprt/log.h>
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35 |
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36 | #include <iprt/assert.h>
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37 | #include <iprt/err.h>
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38 | #include <iprt/thread.h>
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39 | #include "r0drv/alloc-r0drv.h"
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40 |
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41 |
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42 | /**
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43 | * OS specific allocation function.
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44 | */
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45 | int rtR0MemAllocEx(size_t cb, uint32_t fFlags, PRTMEMHDR *ppHdr)
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46 | {
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47 | if (RT_UNLIKELY(fFlags & RTMEMHDR_FLAG_ANY_CTX))
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48 | return VERR_NOT_SUPPORTED;
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49 |
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50 | PRTMEMHDR pHdr = (PRTMEMHDR)malloc(cb + sizeof(*pHdr));
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51 | if (RT_UNLIKELY(!pHdr))
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52 | {
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53 | LogRel(("rtR0MemAllocEx(%u, %#x) failed\n",(unsigned)cb + sizeof(*pHdr), fFlags));
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54 | return VERR_NO_MEMORY;
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55 | }
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56 |
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57 | pHdr->u32Magic = RTMEMHDR_MAGIC;
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58 | pHdr->fFlags = fFlags;
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59 | pHdr->cb = cb;
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60 | pHdr->cbReq = cb;
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61 | *ppHdr = pHdr;
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62 | return VINF_SUCCESS;
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63 | }
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64 |
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65 |
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66 | /**
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67 | * OS specific free function.
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68 | */
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69 | void rtR0MemFree(PRTMEMHDR pHdr)
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70 | {
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71 | pHdr->u32Magic += 1;
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72 | free(pHdr);
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73 | }
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74 |
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75 |
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76 | RTR0DECL(void *) RTMemContAlloc(PRTCCPHYS pPhys, size_t cb) RT_NO_THROW
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77 | {
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78 | /*
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79 | * Validate input.
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80 | */
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81 | AssertPtr(pPhys);
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82 | Assert(cb > 0);
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83 | RT_ASSERT_PREEMPTIBLE();
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84 |
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85 | /*
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86 | * Allocate the memory and ensure that the API is still providing
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87 | * memory that's always below 4GB.
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88 | */
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89 | cb = RT_ALIGN_Z(cb, PAGE_SIZE);
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90 | void *pv;
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91 | area_id area = create_area("VirtualBox Contig Alloc", &pv, B_ANY_KERNEL_ADDRESS, cb, B_32_BIT_CONTIGUOUS,
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92 | B_READ_AREA | B_WRITE_AREA);
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93 | if (area >= 0)
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94 | {
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95 | physical_entry physMap[2];
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96 | if (get_memory_map(pv, cb, physMap, 2)>= B_OK)
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97 | {
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98 | *pPhys = physMap[0].address;
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99 | return pv;
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100 | }
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101 | delete_area(area);
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102 | AssertMsgFailed(("Cannot get_memory_map for contig alloc! cb=%u\n",(unsigned)cb));
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103 | }
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104 | else
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105 | AssertMsgFailed(("Cannot create_area for contig alloc! cb=%u error=0x%08lx\n",(unsigned)cb, area));
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106 | return NULL;
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107 | }
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108 |
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109 |
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110 | RTR0DECL(void) RTMemContFree(void *pv, size_t cb) RT_NO_THROW
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111 | {
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112 | RT_ASSERT_PREEMPTIBLE();
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113 | if (pv)
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114 | {
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115 | Assert(cb > 0);
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116 |
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117 | area_id area = area_for(pv);
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118 | if (area >= B_OK)
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119 | delete_area(area);
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120 | else
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121 | AssertMsgFailed(("Cannot find area to delete! cb=%u error=0x%08lx\n",(unsigned)cb, area));
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122 | }
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123 | }
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124 |
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