| 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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