/* $Id: memobj-r0drv-haiku.c $ */ /** @file * IPRT - Ring-0 Memory Objects, Haiku. */ /* * Copyright (C) 2012-2019 Oracle Corporation * * This file is part of VirtualBox Open Source Edition (OSE), as * available from http://www.virtualbox.org. This file is free software; * you can redistribute it and/or modify it under the terms of the GNU * General Public License (GPL) as published by the Free Software * Foundation, in version 2 as it comes in the "COPYING" file of the * VirtualBox OSE distribution. VirtualBox OSE is distributed in the * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind. * * The contents of this file may alternatively be used under the terms * of the Common Development and Distribution License Version 1.0 * (CDDL) only, as it comes in the "COPYING.CDDL" file of the * VirtualBox OSE 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. */ /********************************************************************************************************************************* * Header Files * *********************************************************************************************************************************/ #include "the-haiku-kernel.h" #include #include #include #include #include #include #include #include "internal/memobj.h" /********************************************************************************************************************************* * Structures and Typedefs * *********************************************************************************************************************************/ /** * The Haiku version of the memory object structure. */ typedef struct RTR0MEMOBJHAIKU { /** The core structure. */ RTR0MEMOBJINTERNAL Core; /** Area identifier */ area_id AreaId; } RTR0MEMOBJHAIKU, *PRTR0MEMOBJHAIKU; //MALLOC_DEFINE(M_IPRTMOBJ, "iprtmobj", "IPRT - R0MemObj"); #if 0 /** * Gets the virtual memory map the specified object is mapped into. * * @returns VM map handle on success, NULL if no map. * @param pMem The memory object. */ static vm_map_t rtR0MemObjHaikuGetMap(PRTR0MEMOBJINTERNAL pMem) { switch (pMem->enmType) { case RTR0MEMOBJTYPE_PAGE: case RTR0MEMOBJTYPE_LOW: case RTR0MEMOBJTYPE_CONT: return kernel_map; case RTR0MEMOBJTYPE_PHYS: case RTR0MEMOBJTYPE_PHYS_NC: return NULL; /* pretend these have no mapping atm. */ case RTR0MEMOBJTYPE_LOCK: return pMem->u.Lock.R0Process == NIL_RTR0PROCESS ? kernel_map : &((struct proc *)pMem->u.Lock.R0Process)->p_vmspace->vm_map; case RTR0MEMOBJTYPE_RES_VIRT: return pMem->u.ResVirt.R0Process == NIL_RTR0PROCESS ? kernel_map : &((struct proc *)pMem->u.ResVirt.R0Process)->p_vmspace->vm_map; case RTR0MEMOBJTYPE_MAPPING: return pMem->u.Mapping.R0Process == NIL_RTR0PROCESS ? kernel_map : &((struct proc *)pMem->u.Mapping.R0Process)->p_vmspace->vm_map; default: return NULL; } } #endif int rtR0MemObjNativeFree(RTR0MEMOBJ pMem) { PRTR0MEMOBJHAIKU pMemHaiku = (PRTR0MEMOBJHAIKU)pMem; int rc = B_OK; switch (pMemHaiku->Core.enmType) { case RTR0MEMOBJTYPE_PAGE: case RTR0MEMOBJTYPE_LOW: case RTR0MEMOBJTYPE_CONT: case RTR0MEMOBJTYPE_MAPPING: case RTR0MEMOBJTYPE_PHYS: case RTR0MEMOBJTYPE_PHYS_NC: { if (pMemHaiku->AreaId > -1) rc = delete_area(pMemHaiku->AreaId); AssertMsg(rc == B_OK, ("%#x", rc)); break; } case RTR0MEMOBJTYPE_LOCK: { team_id team = B_SYSTEM_TEAM; if (pMemHaiku->Core.u.Lock.R0Process != NIL_RTR0PROCESS) team = ((team_id)pMemHaiku->Core.u.Lock.R0Process); rc = unlock_memory_etc(team, pMemHaiku->Core.pv, pMemHaiku->Core.cb, B_READ_DEVICE); AssertMsg(rc == B_OK, ("%#x", rc)); break; } case RTR0MEMOBJTYPE_RES_VIRT: { team_id team = B_SYSTEM_TEAM; if (pMemHaiku->Core.u.Lock.R0Process != NIL_RTR0PROCESS) team = ((team_id)pMemHaiku->Core.u.Lock.R0Process); rc = vm_unreserve_address_range(team, pMemHaiku->Core.pv, pMemHaiku->Core.cb); AssertMsg(rc == B_OK, ("%#x", rc)); break; } default: AssertMsgFailed(("enmType=%d\n", pMemHaiku->Core.enmType)); return VERR_INTERNAL_ERROR; } return VINF_SUCCESS; } static int rtR0MemObjNativeAllocArea(PPRTR0MEMOBJINTERNAL ppMem, size_t cb, bool fExecutable, RTR0MEMOBJTYPE type, RTHCPHYS PhysHighest, size_t uAlignment) { NOREF(fExecutable); int rc; void *pvMap = NULL; const char *pszName = NULL; uint32 addressSpec = B_ANY_KERNEL_ADDRESS; uint32 fLock = ~0U; LogFlowFunc(("ppMem=%p cb=%u, fExecutable=%s, type=%08x, PhysHighest=%RX64 uAlignment=%u\n", ppMem,(unsigned)cb, fExecutable ? "true" : "false", type, PhysHighest,(unsigned)uAlignment)); switch (type) { case RTR0MEMOBJTYPE_PAGE: pszName = "IPRT R0MemObj Alloc"; fLock = B_FULL_LOCK; break; case RTR0MEMOBJTYPE_LOW: pszName = "IPRT R0MemObj AllocLow"; fLock = B_32_BIT_FULL_LOCK; break; case RTR0MEMOBJTYPE_CONT: pszName = "IPRT R0MemObj AllocCont"; fLock = B_32_BIT_CONTIGUOUS; break; #if 0 case RTR0MEMOBJTYPE_MAPPING: pszName = "IPRT R0MemObj Mapping"; fLock = B_FULL_LOCK; break; #endif case RTR0MEMOBJTYPE_PHYS: /** @todo alignment */ if (uAlignment != PAGE_SIZE) return VERR_NOT_SUPPORTED; /** @todo r=ramshankar: no 'break' here?? */ case RTR0MEMOBJTYPE_PHYS_NC: pszName = "IPRT R0MemObj AllocPhys"; fLock = (PhysHighest < _4G ? B_LOMEM : B_32_BIT_CONTIGUOUS); break; #if 0 case RTR0MEMOBJTYPE_LOCK: break; #endif default: return VERR_INTERNAL_ERROR; } /* Create the object. */ PRTR0MEMOBJHAIKU pMemHaiku; pMemHaiku = (PRTR0MEMOBJHAIKU)rtR0MemObjNew(sizeof(RTR0MEMOBJHAIKU), type, NULL, cb); if (RT_UNLIKELY(!pMemHaiku)) return VERR_NO_MEMORY; rc = pMemHaiku->AreaId = create_area(pszName, &pvMap, addressSpec, cb, fLock, B_READ_AREA | B_WRITE_AREA); if (pMemHaiku->AreaId >= 0) { physical_entry physMap[2]; pMemHaiku->Core.pv = pvMap; /* store start address */ switch (type) { case RTR0MEMOBJTYPE_CONT: rc = get_memory_map(pvMap, cb, physMap, 2); if (rc == B_OK) pMemHaiku->Core.u.Cont.Phys = physMap[0].address; break; case RTR0MEMOBJTYPE_PHYS: case RTR0MEMOBJTYPE_PHYS_NC: rc = get_memory_map(pvMap, cb, physMap, 2); if (rc == B_OK) { pMemHaiku->Core.u.Phys.PhysBase = physMap[0].address; pMemHaiku->Core.u.Phys.fAllocated = true; } break; default: break; } if (rc >= B_OK) { *ppMem = &pMemHaiku->Core; return VINF_SUCCESS; } delete_area(pMemHaiku->AreaId); } rtR0MemObjDelete(&pMemHaiku->Core); return RTErrConvertFromHaikuKernReturn(rc); } int rtR0MemObjNativeAllocPage(PPRTR0MEMOBJINTERNAL ppMem, size_t cb, bool fExecutable) { return rtR0MemObjNativeAllocArea(ppMem, cb, fExecutable, RTR0MEMOBJTYPE_PAGE, 0 /* PhysHighest */, 0 /* uAlignment */); } int rtR0MemObjNativeAllocLow(PPRTR0MEMOBJINTERNAL ppMem, size_t cb, bool fExecutable) { return rtR0MemObjNativeAllocArea(ppMem, cb, fExecutable, RTR0MEMOBJTYPE_LOW, 0 /* PhysHighest */, 0 /* uAlignment */); } int rtR0MemObjNativeAllocCont(PPRTR0MEMOBJINTERNAL ppMem, size_t cb, bool fExecutable) { return rtR0MemObjNativeAllocArea(ppMem, cb, fExecutable, RTR0MEMOBJTYPE_CONT, 0 /* PhysHighest */, 0 /* uAlignment */); } int rtR0MemObjNativeAllocPhys(PPRTR0MEMOBJINTERNAL ppMem, size_t cb, RTHCPHYS PhysHighest, size_t uAlignment) { return rtR0MemObjNativeAllocArea(ppMem, cb, false, RTR0MEMOBJTYPE_PHYS, PhysHighest, uAlignment); } int rtR0MemObjNativeAllocPhysNC(PPRTR0MEMOBJINTERNAL ppMem, size_t cb, RTHCPHYS PhysHighest) { return rtR0MemObjNativeAllocPhys(ppMem, cb, PhysHighest, PAGE_SIZE); } int rtR0MemObjNativeEnterPhys(PPRTR0MEMOBJINTERNAL ppMem, RTHCPHYS Phys, size_t cb, uint32_t uCachePolicy) { AssertReturn(uCachePolicy == RTMEM_CACHE_POLICY_DONT_CARE, VERR_NOT_SUPPORTED); LogFlowFunc(("ppMem=%p Phys=%08x cb=%u uCachePolicy=%x\n", ppMem, Phys,(unsigned)cb, uCachePolicy)); /* Create the object. */ PRTR0MEMOBJHAIKU pMemHaiku = (PRTR0MEMOBJHAIKU)rtR0MemObjNew(sizeof(*pMemHaiku), RTR0MEMOBJTYPE_PHYS, NULL, cb); if (!pMemHaiku) return VERR_NO_MEMORY; /* There is no allocation here, it needs to be mapped somewhere first. */ pMemHaiku->AreaId = -1; pMemHaiku->Core.u.Phys.fAllocated = false; pMemHaiku->Core.u.Phys.PhysBase = Phys; pMemHaiku->Core.u.Phys.uCachePolicy = uCachePolicy; *ppMem = &pMemHaiku->Core; return VINF_SUCCESS; } /** * Worker locking the memory in either kernel or user maps. * * @returns IPRT status code. * @param ppMem Where to store the allocated memory object. * @param pvStart The starting address. * @param cb The size of the block. * @param fAccess The mapping protection to apply. * @param R0Process The process to map the memory to (use NIL_RTR0PROCESS * for the kernel) * @param fFlags Memory flags (B_READ_DEVICE indicates the memory is * intended to be written from a "device"). */ static int rtR0MemObjNativeLockInMap(PPRTR0MEMOBJINTERNAL ppMem, void *pvStart, size_t cb, uint32_t fAccess, RTR0PROCESS R0Process, int fFlags) { NOREF(fAccess); int rc; team_id TeamId = B_SYSTEM_TEAM; LogFlowFunc(("ppMem=%p pvStart=%p cb=%u fAccess=%x R0Process=%d fFlags=%x\n", ppMem, pvStart, cb, fAccess, R0Process, fFlags)); /* Create the object. */ PRTR0MEMOBJHAIKU pMemHaiku = (PRTR0MEMOBJHAIKU)rtR0MemObjNew(sizeof(*pMemHaiku), RTR0MEMOBJTYPE_LOCK, pvStart, cb); if (RT_UNLIKELY(!pMemHaiku)) return VERR_NO_MEMORY; if (R0Process != NIL_RTR0PROCESS) TeamId = (team_id)R0Process; rc = lock_memory_etc(TeamId, pvStart, cb, fFlags); if (rc == B_OK) { pMemHaiku->AreaId = -1; pMemHaiku->Core.u.Lock.R0Process = R0Process; *ppMem = &pMemHaiku->Core; return VINF_SUCCESS; } rtR0MemObjDelete(&pMemHaiku->Core); return RTErrConvertFromHaikuKernReturn(rc); } int rtR0MemObjNativeLockUser(PPRTR0MEMOBJINTERNAL ppMem, RTR3PTR R3Ptr, size_t cb, uint32_t fAccess, RTR0PROCESS R0Process) { return rtR0MemObjNativeLockInMap(ppMem, (void *)R3Ptr, cb, fAccess, R0Process, B_READ_DEVICE); } int rtR0MemObjNativeLockKernel(PPRTR0MEMOBJINTERNAL ppMem, void *pv, size_t cb, uint32_t fAccess) { return rtR0MemObjNativeLockInMap(ppMem, pv, cb, fAccess, NIL_RTR0PROCESS, B_READ_DEVICE); } #if 0 /** @todo Reserve address space */ /** * Worker for the two virtual address space reservers. * * We're leaning on the examples provided by mmap and vm_mmap in vm_mmap.c here. */ static int rtR0MemObjNativeReserveInMap(PPRTR0MEMOBJINTERNAL ppMem, void *pvFixed, size_t cb, size_t uAlignment, RTR0PROCESS R0Process) { int rc; team_id TeamId = B_SYSTEM_TEAM; LogFlowFunc(("ppMem=%p pvFixed=%p cb=%u uAlignment=%u R0Process=%d\n", ppMem, pvFixed, (unsigned)cb, uAlignment, R0Process)); if (R0Process != NIL_RTR0PROCESS) team = (team_id)R0Process; /* Check that the specified alignment is supported. */ if (uAlignment > PAGE_SIZE) return VERR_NOT_SUPPORTED; /* Create the object. */ PRTR0MEMOBJHAIKU pMemHaiku = (PRTR0MEMOBJHAIKU)rtR0MemObjNew(sizeof(*pMemHaiku), RTR0MEMOBJTYPE_RES_VIRT, NULL, cb); if (!pMemHaiku) return VERR_NO_MEMORY; /* Ask the kernel to reserve the address range. */ //XXX: vm_reserve_address_range ? return VERR_NOT_SUPPORTED; } #endif int rtR0MemObjNativeReserveKernel(PPRTR0MEMOBJINTERNAL ppMem, void *pvFixed, size_t cb, size_t uAlignment) { return VERR_NOT_SUPPORTED; } int rtR0MemObjNativeReserveUser(PPRTR0MEMOBJINTERNAL ppMem, RTR3PTR R3PtrFixed, size_t cb, size_t uAlignment, RTR0PROCESS R0Process) { return VERR_NOT_SUPPORTED; } int rtR0MemObjNativeMapKernel(PPRTR0MEMOBJINTERNAL ppMem, RTR0MEMOBJ pMemToMap, void *pvFixed, size_t uAlignment, unsigned fProt, size_t offSub, size_t cbSub) { PRTR0MEMOBJHAIKU pMemToMapHaiku = (PRTR0MEMOBJHAIKU)pMemToMap; PRTR0MEMOBJHAIKU pMemHaiku; area_id area = -1; void *pvMap = pvFixed; uint32 uAddrSpec = B_EXACT_ADDRESS; uint32 fProtect = 0; int rc = VERR_MAP_FAILED; AssertMsgReturn(!offSub && !cbSub, ("%#x %#x\n", offSub, cbSub), VERR_NOT_SUPPORTED); AssertMsgReturn(pvFixed == (void *)-1, ("%p\n", pvFixed), VERR_NOT_SUPPORTED); #if 0 /** @todo r=ramshankar: Wrong format specifiers, fix later! */ dprintf("%s(%p, %p, %p, %d, %x, %u, %u)\n", __FUNCTION__, ppMem, pMemToMap, pvFixed, uAlignment, fProt, offSub, cbSub); #endif /* Check that the specified alignment is supported. */ if (uAlignment > PAGE_SIZE) return VERR_NOT_SUPPORTED; /* We can't map anything to the first page, sorry. */ if (pvFixed == 0) return VERR_NOT_SUPPORTED; if (fProt & RTMEM_PROT_READ) fProtect |= B_KERNEL_READ_AREA; if (fProt & RTMEM_PROT_WRITE) fProtect |= B_KERNEL_WRITE_AREA; /* * Either the object we map has an area associated with, which we can clone, * or it's a physical address range which we must map. */ if (pMemToMapHaiku->AreaId > -1) { if (pvFixed == (void *)-1) uAddrSpec = B_ANY_KERNEL_ADDRESS; rc = area = clone_area("IPRT R0MemObj MapKernel", &pvMap, uAddrSpec, fProtect, pMemToMapHaiku->AreaId); LogFlow(("rtR0MemObjNativeMapKernel: clone_area uAddrSpec=%d fProtect=%x AreaId=%d rc=%d\n", uAddrSpec, fProtect, pMemToMapHaiku->AreaId, rc)); } else if (pMemToMapHaiku->Core.enmType == RTR0MEMOBJTYPE_PHYS) { /* map_physical_memory() won't let you choose where. */ if (pvFixed != (void *)-1) return VERR_NOT_SUPPORTED; uAddrSpec = B_ANY_KERNEL_ADDRESS; rc = area = map_physical_memory("IPRT R0MemObj MapKernelPhys", (phys_addr_t)pMemToMapHaiku->Core.u.Phys.PhysBase, pMemToMapHaiku->Core.cb, uAddrSpec, fProtect, &pvMap); } else return VERR_NOT_SUPPORTED; if (rc >= B_OK) { /* Create the object. */ pMemHaiku = (PRTR0MEMOBJHAIKU)rtR0MemObjNew(sizeof(RTR0MEMOBJHAIKU), RTR0MEMOBJTYPE_MAPPING, pvMap, pMemToMapHaiku->Core.cb); if (RT_UNLIKELY(!pMemHaiku)) return VERR_NO_MEMORY; pMemHaiku->Core.u.Mapping.R0Process = NIL_RTR0PROCESS; pMemHaiku->Core.pv = pvMap; pMemHaiku->AreaId = area; *ppMem = &pMemHaiku->Core; return VINF_SUCCESS; } rc = VERR_MAP_FAILED; /** @todo finish the implementation. */ rtR0MemObjDelete(&pMemHaiku->Core); return rc; } int rtR0MemObjNativeMapUser(PPRTR0MEMOBJINTERNAL ppMem, RTR0MEMOBJ pMemToMap, RTR3PTR R3PtrFixed, size_t uAlignment, unsigned fProt, RTR0PROCESS R0Process) { #if 0 /* * Check for unsupported stuff. */ AssertMsgReturn(R0Process == RTR0ProcHandleSelf(), ("%p != %p\n", R0Process, RTR0ProcHandleSelf()), VERR_NOT_SUPPORTED); AssertMsgReturn(R3PtrFixed == (RTR3PTR)-1, ("%p\n", R3PtrFixed), VERR_NOT_SUPPORTED); if (uAlignment > PAGE_SIZE) return VERR_NOT_SUPPORTED; int rc; PRTR0MEMOBJHAIKU pMemToMapHaiku = (PRTR0MEMOBJHAIKU)pMemToMap; struct proc *pProc = (struct proc *)R0Process; struct vm_map *pProcMap = &pProc->p_vmspace->vm_map; /* calc protection */ vm_prot_t ProtectionFlags = 0; if ((fProt & RTMEM_PROT_NONE) == RTMEM_PROT_NONE) ProtectionFlags = VM_PROT_NONE; if ((fProt & RTMEM_PROT_READ) == RTMEM_PROT_READ) ProtectionFlags |= VM_PROT_READ; if ((fProt & RTMEM_PROT_WRITE) == RTMEM_PROT_WRITE) ProtectionFlags |= VM_PROT_WRITE; if ((fProt & RTMEM_PROT_EXEC) == RTMEM_PROT_EXEC) ProtectionFlags |= VM_PROT_EXECUTE; /* calc mapping address */ PROC_LOCK(pProc); vm_offset_t AddrR3 = round_page((vm_offset_t)pProc->p_vmspace->vm_daddr + lim_max(pProc, RLIMIT_DATA)); PROC_UNLOCK(pProc); /* Insert the object in the map. */ rc = vm_map_find(pProcMap, /* Map to insert the object in */ NULL, /* Object to map */ 0, /* Start offset in the object */ &AddrR3, /* Start address IN/OUT */ pMemToMap->cb, /* Size of the mapping */ TRUE, /* Whether a suitable address should be searched for first */ ProtectionFlags, /* protection flags */ VM_PROT_ALL, /* Maximum protection flags */ 0); /* Copy on write */ /* Map the memory page by page into the destination map. */ if (rc == KERN_SUCCESS) { size_t cPages = pMemToMap->cb >> PAGE_SHIFT;; pmap_t pPhysicalMap = pProcMap->pmap; vm_offset_t AddrR3Dst = AddrR3; if ( pMemToMap->enmType == RTR0MEMOBJTYPE_PHYS || pMemToMap->enmType == RTR0MEMOBJTYPE_PHYS_NC || pMemToMap->enmType == RTR0MEMOBJTYPE_PAGE) { /* Mapping physical allocations */ Assert(cPages == pMemToMapHaiku->u.Phys.cPages); /* Insert the memory page by page into the mapping. */ for (uint32_t iPage = 0; iPage < cPages; iPage++) { vm_page_t pPage = pMemToMapHaiku->u.Phys.apPages[iPage]; MY_PMAP_ENTER(pPhysicalMap, AddrR3Dst, pPage, ProtectionFlags, TRUE); AddrR3Dst += PAGE_SIZE; } } else { /* Mapping cont or low memory types */ vm_offset_t AddrToMap = (vm_offset_t)pMemToMap->pv; for (uint32_t iPage = 0; iPage < cPages; iPage++) { vm_page_t pPage = PHYS_TO_VM_PAGE(vtophys(AddrToMap)); MY_PMAP_ENTER(pPhysicalMap, AddrR3Dst, pPage, ProtectionFlags, TRUE); AddrR3Dst += PAGE_SIZE; AddrToMap += PAGE_SIZE; } } } if (RT_SUCCESS(rc)) { /* * Create a mapping object for it. */ PRTR0MEMOBJHAIKU pMemHaiku = (PRTR0MEMOBJHAIKU)rtR0MemObjNew(sizeof(RTR0MEMOBJHAIKU), RTR0MEMOBJTYPE_MAPPING, (void *)AddrR3, pMemToMap->cb); if (pMemHaiku) { Assert((vm_offset_t)pMemHaiku->Core.pv == AddrR3); pMemHaiku->Core.u.Mapping.R0Process = R0Process; *ppMem = &pMemHaiku->Core; return VINF_SUCCESS; } rc = vm_map_remove(pProcMap, ((vm_offset_t)AddrR3), ((vm_offset_t)AddrR3) + pMemToMap->cb); AssertMsg(rc == KERN_SUCCESS, ("Deleting mapping failed\n")); } #endif return VERR_NOT_SUPPORTED; } int rtR0MemObjNativeProtect(PRTR0MEMOBJINTERNAL pMem, size_t offSub, size_t cbSub, uint32_t fProt) { return VERR_NOT_SUPPORTED; } RTHCPHYS rtR0MemObjNativeGetPagePhysAddr(PRTR0MEMOBJINTERNAL pMem, size_t iPage) { PRTR0MEMOBJHAIKU pMemHaiku = (PRTR0MEMOBJHAIKU)pMem; status_t rc; /** @todo r=ramshankar: Validate objects */ LogFlow(("rtR0MemObjNativeGetPagePhysAddr: pMem=%p enmType=%x iPage=%u\n", pMem, pMemHaiku->Core.enmType,(unsigned)iPage)); switch (pMemHaiku->Core.enmType) { case RTR0MEMOBJTYPE_LOCK: { team_id TeamId = B_SYSTEM_TEAM; physical_entry aPhysMap[2]; int32 cPhysMap = 2; /** @todo r=ramshankar: why not use RT_ELEMENTS? */ if (pMemHaiku->Core.u.Lock.R0Process != NIL_RTR0PROCESS) TeamId = (team_id)pMemHaiku->Core.u.Lock.R0Process; void *pb = pMemHaiku->Core.pv + (iPage << PAGE_SHIFT); rc = get_memory_map_etc(TeamId, pb, B_PAGE_SIZE, aPhysMap, &cPhysMap); if (rc < B_OK || cPhysMap < 1) return NIL_RTHCPHYS; return aPhysMap[0].address; } #if 0 case RTR0MEMOBJTYPE_MAPPING: { vm_offset_t pb = (vm_offset_t)pMemHaiku->Core.pv + (iPage << PAGE_SHIFT); if (pMemHaiku->Core.u.Mapping.R0Process != NIL_RTR0PROCESS) { struct proc *pProc = (struct proc *)pMemHaiku->Core.u.Mapping.R0Process; struct vm_map *pProcMap = &pProc->p_vmspace->vm_map; pmap_t pPhysicalMap = pProcMap->pmap; return pmap_extract(pPhysicalMap, pb); } return vtophys(pb); } #endif case RTR0MEMOBJTYPE_CONT: return pMemHaiku->Core.u.Cont.Phys + (iPage << PAGE_SHIFT); case RTR0MEMOBJTYPE_PHYS: return pMemHaiku->Core.u.Phys.PhysBase + (iPage << PAGE_SHIFT); case RTR0MEMOBJTYPE_LOW: case RTR0MEMOBJTYPE_PAGE: case RTR0MEMOBJTYPE_PHYS_NC: { team_id TeamId = B_SYSTEM_TEAM; physical_entry aPhysMap[2]; int32 cPhysMap = 2; /** @todo r=ramshankar: why not use RT_ELEMENTS? */ void *pb = pMemHaiku->Core.pv + (iPage << PAGE_SHIFT); rc = get_memory_map_etc(TeamId, pb, B_PAGE_SIZE, aPhysMap, &cPhysMap); if (rc < B_OK || cPhysMap < 1) return NIL_RTHCPHYS; return aPhysMap[0].address; } case RTR0MEMOBJTYPE_RES_VIRT: default: return NIL_RTHCPHYS; } }