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/* $Id: alloc-r0drv-os2.cpp $ */
/** @file
* IPRT - Memory Allocation, Ring-0 Driver, OS/2.
*/
/*
* 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-os2-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" /** @todo drop the r0drv/alloc-r0drv.cpp stuff on OS/2? */
DECLHIDDEN(int) rtR0MemAllocEx(size_t cb, uint32_t fFlags, PRTMEMHDR *ppHdr)
{
if (fFlags & RTMEMHDR_FLAG_ANY_CTX)
return VERR_NOT_SUPPORTED;
void *pv = NULL;
APIRET rc = KernVMAlloc(cb + sizeof(RTMEMHDR), VMDHA_FIXED, &pv, (void **)-1, NULL);
if (RT_UNLIKELY(rc != NO_ERROR))
return RTErrConvertFromOS2(rc);
PRTMEMHDR pHdr = (PRTMEMHDR)pv;
pHdr->u32Magic = RTMEMHDR_MAGIC;
pHdr->fFlags = fFlags;
pHdr->cb = cb;
pHdr->cbReq = cb;
*ppHdr = pHdr;
return VINF_SUCCESS;
}
DECLHIDDEN(void) rtR0MemFree(PRTMEMHDR pHdr)
{
pHdr->u32Magic += 1;
APIRET rc = KernVMFree(pHdr);
Assert(!rc); NOREF(rc);
}
RTR0DECL(void *) RTMemContAlloc(PRTCCPHYS pPhys, size_t cb)
{
/*
* Validate input.
*/
AssertPtr(pPhys);
Assert(cb > 0);
/*
* All physical memory in OS/2 is below 4GB, so this should be kind of easy.
*/
cb = RT_ALIGN_Z(cb, PAGE_SIZE); /* -> page aligned result. */
PVOID pv = NULL;
PVOID PhysAddr = (PVOID)~0UL;
APIRET rc = KernVMAlloc(cb, VMDHA_FIXED | VMDHA_CONTIG, &pv, &PhysAddr, NULL);
if (!rc)
{
Assert(PhysAddr != (PVOID)~0UL);
Assert(!((uintptr_t)pv & PAGE_OFFSET_MASK));
*pPhys = (uintptr_t)PhysAddr;
return pv;
}
return NULL;
}
RTR0DECL(void) RTMemContFree(void *pv, size_t cb)
{
if (pv)
{
AssertMsg(!((uintptr_t)pv & PAGE_OFFSET_MASK), ("pv=%p\n", pv));
KernVMFree(pv);
}
}
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