| 1 | /* $Id: alloc-r0drv-freebsd.c 3680 2007-07-18 04:31:28Z vboxsync $ */
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| 2 | /** @file
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| 3 | * innotek Portable Runtime - Memory Allocation, Ring-0 Driver, FreeBSD.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (c) 2007 knut st. osmundsen <bird-src-spam@anduin.net>
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| 8 | *
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| 9 | * Permission is hereby granted, free of charge, to any person
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| 10 | * obtaining a copy of this software and associated documentation
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| 11 | * files (the "Software"), to deal in the Software without
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| 12 | * restriction, including without limitation the rights to use,
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| 13 | * copy, modify, merge, publish, distribute, sublicense, and/or sell
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| 14 | * copies of the Software, and to permit persons to whom the
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| 15 | * Software is furnished to do so, subject to the following
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| 16 | * conditions:
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| 17 | *
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| 18 | * The above copyright notice and this permission notice shall be
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| 19 | * included in all copies or substantial portions of the Software.
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| 20 | *
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| 21 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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| 22 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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| 23 | * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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| 24 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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| 25 | * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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| 26 | * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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| 27 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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| 28 | * OTHER DEALINGS IN THE SOFTWARE.
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| 29 | */
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| 30 |
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| 31 | /*******************************************************************************
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| 32 | * Header Files *
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| 33 | *******************************************************************************/
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| 34 | #include "the-freebsd-kernel.h"
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| 35 |
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| 36 | #include <iprt/alloc.h>
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| 37 | #include <iprt/assert.h>
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| 38 | #include <iprt/param.h>
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| 39 |
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| 40 | #include "r0drv/alloc-r0drv.h"
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| 41 |
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| 42 |
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| 43 | /*******************************************************************************
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| 44 | * Global Variables *
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| 45 | *******************************************************************************/
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| 46 | /* These two statements will define two globals and add initializers
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| 47 | and destructors that will be called at load/unload time (I think). */
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| 48 | MALLOC_DEFINE(M_IPRTHEAP, "iprtheap", "innotek Portable Runtime - heap");
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| 49 | MALLOC_DEFINE(M_IPRTCONT, "iprtcont", "innotek Portable Runtime - contiguous");
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| 50 |
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| 51 |
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| 52 | PRTMEMHDR rtMemAlloc(size_t cb, uint32_t fFlags)
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| 53 | {
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| 54 | PRTMEMHDR pHdr;
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| 55 | Assert(cb != sizeof(void *)); /* 99% of pointer sized allocations are wrong. */
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| 56 |
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| 57 | /** @todo Just like OS/2, FreeBSD doesn't need this header. */
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| 58 | pHdr = (PRTMEMHDR)malloc(cb + sizeof(RTMEMHDR), M_IPRTHEAP,
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| 59 | fFlags & RTMEMHDR_FLAG_ZEROED ? M_NOWAIT | M_ZERO : M_NOWAIT);
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| 60 | if (pHdr)
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| 61 | {
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| 62 | pHdr->u32Magic = RTMEMHDR_MAGIC;
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| 63 | pHdr->fFlags = fFlags;
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| 64 | pHdr->cb = cb;
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| 65 | pHdr->u32Padding = 0;
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| 66 | return pHdr;
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| 67 | }
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| 68 | return NULL;
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| 69 | }
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| 70 |
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| 71 |
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| 72 | void rtMemFree(PRTMEMHDR pHdr)
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| 73 | {
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| 74 | pHdr->u32Magic += 1;
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| 75 | free(pHdr, M_IPRTHEAP);
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| 76 | }
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| 77 |
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| 78 |
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| 79 | RTR0DECL(void *) RTMemContAlloc(PRTCCPHYS pPhys, size_t cb)
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| 80 | {
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| 81 | void *pv;
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| 82 |
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| 83 | /*
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| 84 | * Validate input.
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| 85 | */
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| 86 | AssertPtr(pPhys);
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| 87 | Assert(cb > 0);
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| 88 |
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| 89 | /*
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| 90 | * This API works in pages, so no need to do any size aligning.
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| 91 | */
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| 92 | pv = contigmalloc(cb, /* size */
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| 93 | M_IPRTCONT, /* type */
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| 94 | M_NOWAIT | M_ZERO, /* flags */
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| 95 | 0, /* lowest physical address*/
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| 96 | _4G-1, /* highest physical address */
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| 97 | PAGE_SIZE, /* alignment. */
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| 98 | 0); /* boundrary */
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| 99 | if (pv)
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| 100 | {
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| 101 | Assert(!((uintptr_t)pv & PAGE_OFFSET_MASK));
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| 102 | *pPhys = vtophys(pv);
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| 103 | Assert(!(*pPhys & PAGE_OFFSET_MASK));
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| 104 | }
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| 105 | return pv;
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| 106 | }
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| 107 |
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| 108 |
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| 109 | RTR0DECL(void) RTMemContFree(void *pv, size_t cb)
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| 110 | {
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| 111 | if (pv)
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| 112 | {
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| 113 | AssertMsg(!((uintptr_t)pv & PAGE_OFFSET_MASK), ("pv=%p\n", pv));
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| 114 | contigfree(pv, cb, M_IPRTCONT);
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| 115 | }
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| 116 | }
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| 117 |
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