diff options
Diffstat (limited to 'src/VBox/Runtime/r0drv/freebsd/alloc-r0drv-freebsd.c')
| -rw-r--r-- | src/VBox/Runtime/r0drv/freebsd/alloc-r0drv-freebsd.c | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/src/VBox/Runtime/r0drv/freebsd/alloc-r0drv-freebsd.c b/src/VBox/Runtime/r0drv/freebsd/alloc-r0drv-freebsd.c new file mode 100644 index 00000000..ca0c49d2 --- /dev/null +++ b/src/VBox/Runtime/r0drv/freebsd/alloc-r0drv-freebsd.c @@ -0,0 +1,153 @@ +/* $Id: alloc-r0drv-freebsd.c $ */ +/** @file + * IPRT - Memory Allocation, Ring-0 Driver, FreeBSD. + */ + +/* + * Contributed by knut st. osmundsen. + * + * Copyright (C) 2007-2022 Oracle and/or its affiliates. + * + * This file is part of VirtualBox base platform packages, as + * available from https://www.virtualbox.org. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation, in version 3 of the + * License. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <https://www.gnu.org/licenses>. + * + * The contents of this file may alternatively be used under the terms + * of the Common Development and Distribution License Version 1.0 + * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included + * in the VirtualBox distribution, in which case the provisions of the + * CDDL are applicable instead of those of the GPL. + * + * You may elect to license modified versions of this file under the + * terms and conditions of either the GPL or the CDDL or both. + * + * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0 + * -------------------------------------------------------------------- + * + * This code is based on: + * + * Copyright (c) 2007 knut st. osmundsen <bird-src-spam@anduin.net> + * + * Permission is hereby granted, free of charge, to any person + * obtaining a copy of this software and associated documentation + * files (the "Software"), to deal in the Software without + * restriction, including without limitation the rights to use, + * copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following + * conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES + * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT + * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, + * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + */ + + +/********************************************************************************************************************************* +* Header Files * +*********************************************************************************************************************************/ +#include "the-freebsd-kernel.h" +#include "internal/iprt.h" +#include <iprt/mem.h> + +#include <iprt/assert.h> +#include <iprt/errcore.h> +#include <iprt/param.h> + +#include "r0drv/alloc-r0drv.h" + + +/********************************************************************************************************************************* +* Global Variables * +*********************************************************************************************************************************/ +/* These two statements will define two globals and add initializers + and destructors that will be called at load/unload time (I think). */ +MALLOC_DEFINE(M_IPRTHEAP, "iprtheap", "IPRT - heap"); +MALLOC_DEFINE(M_IPRTCONT, "iprtcont", "IPRT - contiguous"); + + +DECLHIDDEN(int) rtR0MemAllocEx(size_t cb, uint32_t fFlags, PRTMEMHDR *ppHdr) +{ + size_t cbAllocated = cb; + PRTMEMHDR pHdr = (PRTMEMHDR)malloc(cb + sizeof(RTMEMHDR), M_IPRTHEAP, + fFlags & RTMEMHDR_FLAG_ZEROED ? M_NOWAIT | M_ZERO : M_NOWAIT); + if (RT_LIKELY(pHdr)) + { + pHdr->u32Magic = RTMEMHDR_MAGIC; + pHdr->fFlags = fFlags; + pHdr->cb = cbAllocated; + pHdr->cbReq = cb; + + *ppHdr = pHdr; + return VINF_SUCCESS; + } + return VERR_NO_MEMORY; +} + + +DECLHIDDEN(void) rtR0MemFree(PRTMEMHDR pHdr) +{ + pHdr->u32Magic += 1; + free(pHdr, M_IPRTHEAP); +} + + +RTR0DECL(void *) RTMemContAlloc(PRTCCPHYS pPhys, size_t cb) +{ + void *pv; + + /* + * Validate input. + */ + AssertPtr(pPhys); + Assert(cb > 0); + + /* + * This API works in pages, so no need to do any size aligning. + */ + pv = contigmalloc(cb, /* size */ + M_IPRTCONT, /* type */ + M_NOWAIT | M_ZERO, /* flags */ + 0, /* lowest physical address*/ + _4G-1, /* highest physical address */ + PAGE_SIZE, /* alignment. */ + 0); /* boundary */ + if (pv) + { + Assert(!((uintptr_t)pv & PAGE_OFFSET_MASK)); + *pPhys = vtophys(pv); + Assert(!(*pPhys & PAGE_OFFSET_MASK)); + } + return pv; +} + + +RTR0DECL(void) RTMemContFree(void *pv, size_t cb) +{ + if (pv) + { + AssertMsg(!((uintptr_t)pv & PAGE_OFFSET_MASK), ("pv=%p\n", pv)); + contigfree(pv, cb, M_IPRTCONT); + } +} + |