alloc-r0drv-os2.cpp revision d1c5a03c19683c719b94496bb998fde2f2e5e622
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync/* $Id$ */
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync/** @file
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync * InnoTek Portable Runtime - Memory Allocation, Ring-0 Driver, OS/2.
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync */
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync/*
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync * Copyright (c) 2007 knut st. osmundsen <bird-src-spam@anduin.net>
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync *
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync * Permission is hereby granted, free of charge, to any person
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync * obtaining a copy of this software and associated documentation
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync * files (the "Software"), to deal in the Software without
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync * restriction, including without limitation the rights to use,
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync * copy, modify, merge, publish, distribute, sublicense, and/or sell
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync * copies of the Software, and to permit persons to whom the
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync * Software is furnished to do so, subject to the following
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync * conditions:
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync *
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync * The above copyright notice and this permission notice shall be
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync * included in all copies or substantial portions of the Software.
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync *
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync * OTHER DEALINGS IN THE SOFTWARE.
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync */
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync/*******************************************************************************
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync* Header Files *
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync*******************************************************************************/
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync#include "the-os2-kernel.h"
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync#include <iprt/alloc.h>
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync#include <iprt/assert.h>
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync#include <iprt/param.h>
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync#include "r0drv/alloc-r0drv.h" /** @todo drop the r0drv/alloc-r0drv.cpp stuff on OS/2. */
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsyncPRTMEMHDR rtMemAlloc(size_t cb, uint32_t fFlags)
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync{
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync Assert(cb != sizeof(void *)); /* 99% of pointer sized allocations are wrong. */
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync void *pv = NULL;
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync APIRET rc = KernVMAlloc(cb + sizeof(RTMEMHDR), VMDHA_FIXED, &pv, (void **)-1, NULL);
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync if (!rc)
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync {
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync PRTMEMHDR pHdr = (PRTMEMHDR)pv;
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync pHdr->u32Magic = RTMEMHDR_MAGIC;
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync pHdr->fFlags = fFlags;
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync pHdr->cb = cb;
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync pHdr->u32Padding = 0;
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync return pHdr;
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync }
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync return NULL;
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync}
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsyncvoid rtMemFree(PRTMEMHDR pHdr)
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync{
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync pHdr->u32Magic += 1;
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync APIRET rc = KernVMFree(pHdr);
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync Assert(!rc); NOREF(rc);
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync}
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsyncRTR0DECL(void *) RTMemContAlloc(PRTCCPHYS pPhys, size_t cb)
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync{
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync /*
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync * Validate input.
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync */
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync AssertPtr(pPhys);
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync Assert(cb > 0);
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync /*
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync * All physical memory in OS/2 is below 4GB, so this should be kind of easy.
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync */
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync cb = RT_ALIGN_Z(cb, PAGE_SIZE); /* -> page aligned result. */
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync PVOID pv = NULL;
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync PVOID PhysAddr = (PVOID)~0UL;
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync APIRET rc = KernVMAlloc(cb, VMDHA_FIXED | VMDHA_CONTIG, &pv, &PhysAddr, NULL);
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync if (!rc)
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync {
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync Assert(PhysAddr != (PVOID)~0UL);
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync Assert(!((uintptr_t)pv & PAGE_OFFSET_MASK));
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync *pPhys = (uintptr_t)PhysAddr;
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync return pv;
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync }
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync return NULL;
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync}
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsyncRTR0DECL(void) RTMemContFree(void *pv, size_t cb)
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync{
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync if (pv)
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync {
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync AssertMsg(!((uintptr_t)pv & PAGE_OFFSET_MASK), ("pv=%p\n", pv));
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync KernVMFree(pv);
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync }
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync}
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync
65c72795ab90d3daefa759b716fbb5c6352c7a56vboxsync