diff options
Diffstat (limited to 'src/VBox/Runtime/r0drv/netbsd/memobj-r0drv-netbsd.c')
| -rw-r--r-- | src/VBox/Runtime/r0drv/netbsd/memobj-r0drv-netbsd.c | 558 |
1 files changed, 558 insertions, 0 deletions
diff --git a/src/VBox/Runtime/r0drv/netbsd/memobj-r0drv-netbsd.c b/src/VBox/Runtime/r0drv/netbsd/memobj-r0drv-netbsd.c new file mode 100644 index 00000000..4d4b5bba --- /dev/null +++ b/src/VBox/Runtime/r0drv/netbsd/memobj-r0drv-netbsd.c @@ -0,0 +1,558 @@ +/* $Id: memobj-r0drv-netbsd.c $ */ +/** @file + * IPRT - Ring-0 Memory Objects, NetBSD. + */ + +/* + * Copyright (c) 2007 knut st. osmundsen <bird-src-spam@anduin.net> + * Copyright (c) 2011 Andriy Gapon <avg@FreeBSD.org> + * Copyright (c) 2014 Arto Huusko + * + * 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-netbsd-kernel.h" + +#include <iprt/memobj.h> +#include <iprt/mem.h> +#include <iprt/err.h> +#include <iprt/assert.h> +#include <iprt/log.h> +#include <iprt/param.h> +#include <iprt/process.h> +#include "internal/memobj.h" + + +/********************************************************************************************************************************* +* Structures and Typedefs * +*********************************************************************************************************************************/ +/** + * The NetBSD version of the memory object structure. + */ +typedef struct RTR0MEMOBJNETBSD +{ + /** The core structure. */ + RTR0MEMOBJINTERNAL Core; + size_t size; + struct pglist pglist; +} RTR0MEMOBJNETBSD, *PRTR0MEMOBJNETBSD; + + +typedef struct vm_map* vm_map_t; + +/** + * 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 rtR0MemObjNetBSDGetMap(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; + } +} + + +DECLHIDDEN(int) rtR0MemObjNativeFree(RTR0MEMOBJ pMem) +{ + PRTR0MEMOBJNETBSD pMemNetBSD = (PRTR0MEMOBJNETBSD)pMem; + int rc; + + switch (pMemNetBSD->Core.enmType) + { + case RTR0MEMOBJTYPE_PAGE: + { + kmem_free(pMemNetBSD->Core.pv, pMemNetBSD->Core.cb); + break; + } + case RTR0MEMOBJTYPE_LOW: + case RTR0MEMOBJTYPE_CONT: + { + /* Unmap */ + pmap_kremove((vaddr_t)pMemNetBSD->Core.pv, pMemNetBSD->Core.cb); + /* Free the virtual space */ + uvm_km_free(kernel_map, (vaddr_t)pMemNetBSD->Core.pv, pMemNetBSD->Core.cb, UVM_KMF_VAONLY); + /* Free the physical pages */ + uvm_pglistfree(&pMemNetBSD->pglist); + break; + } + case RTR0MEMOBJTYPE_PHYS: + case RTR0MEMOBJTYPE_PHYS_NC: + { + /* Free the physical pages */ + uvm_pglistfree(&pMemNetBSD->pglist); + break; + } + case RTR0MEMOBJTYPE_LOCK: + if (pMemNetBSD->Core.u.Lock.R0Process != NIL_RTR0PROCESS) + { + uvm_map_pageable( + &((struct proc *)pMemNetBSD->Core.u.Lock.R0Process)->p_vmspace->vm_map, + (vaddr_t)pMemNetBSD->Core.pv, + ((vaddr_t)pMemNetBSD->Core.pv) + pMemNetBSD->Core.cb, + 1, 0); + } + break; + case RTR0MEMOBJTYPE_RES_VIRT: + if (pMemNetBSD->Core.u.Lock.R0Process == NIL_RTR0PROCESS) + { + uvm_km_free(kernel_map, (vaddr_t)pMemNetBSD->Core.pv, pMemNetBSD->Core.cb, UVM_KMF_VAONLY); + } + break; + case RTR0MEMOBJTYPE_MAPPING: + if (pMemNetBSD->Core.u.Lock.R0Process == NIL_RTR0PROCESS) + { + pmap_kremove((vaddr_t)pMemNetBSD->Core.pv, pMemNetBSD->Core.cb); + uvm_km_free(kernel_map, (vaddr_t)pMemNetBSD->Core.pv, pMemNetBSD->Core.cb, UVM_KMF_VAONLY); + } + break; + + default: + AssertMsgFailed(("enmType=%d\n", pMemNetBSD->Core.enmType)); + return VERR_INTERNAL_ERROR; + } + + return VINF_SUCCESS; +} + +static int rtR0MemObjNetBSDAllocHelper(PRTR0MEMOBJNETBSD pMemNetBSD, size_t cb, bool fExecutable, + paddr_t VmPhysAddrHigh, bool fContiguous) +{ + /* Virtual space first */ + vaddr_t virt = uvm_km_alloc(kernel_map, cb, 0, + UVM_KMF_VAONLY | UVM_KMF_WAITVA | UVM_KMF_CANFAIL); + if (virt == 0) + return VERR_NO_MEMORY; + + struct pglist *rlist = &pMemNetBSD->pglist; + + int nsegs = fContiguous ? 1 : INT_MAX; + + /* Physical pages */ + if (uvm_pglistalloc(cb, 0, VmPhysAddrHigh, + PAGE_SIZE, 0, rlist, nsegs, 1) != 0) + { + uvm_km_free(kernel_map, virt, cb, UVM_KMF_VAONLY); + return VERR_NO_MEMORY; + } + + /* Map */ + struct vm_page *page; + vm_prot_t prot = VM_PROT_READ | VM_PROT_WRITE; + if (fExecutable) + prot |= VM_PROT_EXECUTE; + vaddr_t virt2 = virt; + TAILQ_FOREACH(page, rlist, pageq.queue) + { + pmap_kenter_pa(virt2, VM_PAGE_TO_PHYS(page), prot, 0); + virt2 += PAGE_SIZE; + } + + pMemNetBSD->Core.pv = (void *)virt; + if (fContiguous) + { + page = TAILQ_FIRST(rlist); + pMemNetBSD->Core.u.Cont.Phys = VM_PAGE_TO_PHYS(page); + } + return VINF_SUCCESS; +} + +DECLHIDDEN(int) rtR0MemObjNativeAllocPage(PPRTR0MEMOBJINTERNAL ppMem, size_t cb, bool fExecutable) +{ + PRTR0MEMOBJNETBSD pMemNetBSD = (PRTR0MEMOBJNETBSD)rtR0MemObjNew(sizeof(*pMemNetBSD), + RTR0MEMOBJTYPE_PAGE, NULL, cb); + if (!pMemNetBSD) + return VERR_NO_MEMORY; + + void *pvMem = kmem_alloc(cb, KM_SLEEP); + if (RT_UNLIKELY(!pvMem)) + { + rtR0MemObjDelete(&pMemNetBSD->Core); + return VERR_NO_PAGE_MEMORY; + } + if (fExecutable) + { + pmap_protect(pmap_kernel(), (vaddr_t)pvMem, ((vaddr_t)pvMem) + cb, + VM_PROT_READ | VM_PROT_WRITE | VM_PROT_EXECUTE); + } + + pMemNetBSD->Core.pv = pvMem; + *ppMem = &pMemNetBSD->Core; + return VINF_SUCCESS; +} + + +DECLHIDDEN(int) rtR0MemObjNativeAllocLow(PPRTR0MEMOBJINTERNAL ppMem, size_t cb, bool fExecutable) +{ + PRTR0MEMOBJNETBSD pMemNetBSD = (PRTR0MEMOBJNETBSD)rtR0MemObjNew(sizeof(*pMemNetBSD), + RTR0MEMOBJTYPE_LOW, NULL, cb); + if (!pMemNetBSD) + return VERR_NO_MEMORY; + + int rc = rtR0MemObjNetBSDAllocHelper(pMemNetBSD, cb, fExecutable, _4G - 1, false); + if (rc) + { + rtR0MemObjDelete(&pMemNetBSD->Core); + return rc; + } + + *ppMem = &pMemNetBSD->Core; + return VINF_SUCCESS; +} + + +DECLHIDDEN(int) rtR0MemObjNativeAllocCont(PPRTR0MEMOBJINTERNAL ppMem, size_t cb, bool fExecutable) +{ + PRTR0MEMOBJNETBSD pMemNetBSD = (PRTR0MEMOBJNETBSD)rtR0MemObjNew(sizeof(*pMemNetBSD), + RTR0MEMOBJTYPE_CONT, NULL, cb); + if (!pMemNetBSD) + return VERR_NO_MEMORY; + + int rc = rtR0MemObjNetBSDAllocHelper(pMemNetBSD, cb, fExecutable, _4G - 1, true); + if (rc) + { + rtR0MemObjDelete(&pMemNetBSD->Core); + return rc; + } + + *ppMem = &pMemNetBSD->Core; + return VINF_SUCCESS; +} + + +static int rtR0MemObjNetBSDAllocPhysPages(PPRTR0MEMOBJINTERNAL ppMem, RTR0MEMOBJTYPE enmType, + size_t cb, + RTHCPHYS PhysHighest, size_t uAlignment, + bool fContiguous) +{ + paddr_t VmPhysAddrHigh; + + /* create the object. */ + PRTR0MEMOBJNETBSD pMemNetBSD = (PRTR0MEMOBJNETBSD)rtR0MemObjNew(sizeof(*pMemNetBSD), + enmType, NULL, cb); + if (!pMemNetBSD) + return VERR_NO_MEMORY; + + if (PhysHighest != NIL_RTHCPHYS) + VmPhysAddrHigh = PhysHighest; + else + VmPhysAddrHigh = ~(paddr_t)0; + + int nsegs = fContiguous ? 1 : INT_MAX; + + int error = uvm_pglistalloc(cb, 0, VmPhysAddrHigh, uAlignment, 0, &pMemNetBSD->pglist, nsegs, 1); + if (error) + { + rtR0MemObjDelete(&pMemNetBSD->Core); + return VERR_NO_MEMORY; + } + + if (fContiguous) + { + Assert(enmType == RTR0MEMOBJTYPE_PHYS); + const struct vm_page * const pg = TAILQ_FIRST(&pMemNetBSD->pglist); + pMemNetBSD->Core.u.Phys.PhysBase = VM_PAGE_TO_PHYS(pg); + pMemNetBSD->Core.u.Phys.fAllocated = true; + } + *ppMem = &pMemNetBSD->Core; + + return VINF_SUCCESS; +} + + +DECLHIDDEN(int) rtR0MemObjNativeAllocPhys(PPRTR0MEMOBJINTERNAL ppMem, size_t cb, RTHCPHYS PhysHighest, size_t uAlignment) +{ + return rtR0MemObjNetBSDAllocPhysPages(ppMem, RTR0MEMOBJTYPE_PHYS, cb, PhysHighest, uAlignment, true); +} + + +DECLHIDDEN(int) rtR0MemObjNativeAllocPhysNC(PPRTR0MEMOBJINTERNAL ppMem, size_t cb, RTHCPHYS PhysHighest) +{ + return rtR0MemObjNetBSDAllocPhysPages(ppMem, RTR0MEMOBJTYPE_PHYS_NC, cb, PhysHighest, PAGE_SIZE, false); +} + + +DECLHIDDEN(int) rtR0MemObjNativeEnterPhys(PPRTR0MEMOBJINTERNAL ppMem, RTHCPHYS Phys, size_t cb, uint32_t uCachePolicy) +{ + AssertReturn(uCachePolicy == RTMEM_CACHE_POLICY_DONT_CARE, VERR_NOT_SUPPORTED); + + /* create the object. */ + PRTR0MEMOBJNETBSD pMemNetBSD = (PRTR0MEMOBJNETBSD)rtR0MemObjNew(sizeof(*pMemNetBSD), RTR0MEMOBJTYPE_PHYS, NULL, cb); + if (!pMemNetBSD) + return VERR_NO_MEMORY; + + /* there is no allocation here, it needs to be mapped somewhere first. */ + pMemNetBSD->Core.u.Phys.fAllocated = false; + pMemNetBSD->Core.u.Phys.PhysBase = Phys; + pMemNetBSD->Core.u.Phys.uCachePolicy = uCachePolicy; + TAILQ_INIT(&pMemNetBSD->pglist); + *ppMem = &pMemNetBSD->Core; + return VINF_SUCCESS; +} + + +DECLHIDDEN(int) rtR0MemObjNativeLockUser(PPRTR0MEMOBJINTERNAL ppMem, RTR3PTR R3Ptr, size_t cb, uint32_t fAccess, RTR0PROCESS R0Process) +{ + PRTR0MEMOBJNETBSD pMemNetBSD = (PRTR0MEMOBJNETBSD)rtR0MemObjNew(sizeof(*pMemNetBSD), RTR0MEMOBJTYPE_LOCK, (void *)R3Ptr, cb); + if (!pMemNetBSD) + return VERR_NO_MEMORY; + + int rc = uvm_map_pageable( + &((struct proc *)R0Process)->p_vmspace->vm_map, + R3Ptr, + R3Ptr + cb, + 0, 0); + if (rc) + { + rtR0MemObjDelete(&pMemNetBSD->Core); + return VERR_NO_MEMORY; + } + + pMemNetBSD->Core.u.Lock.R0Process = R0Process; + *ppMem = &pMemNetBSD->Core; + return VINF_SUCCESS; +} + + +DECLHIDDEN(int) rtR0MemObjNativeLockKernel(PPRTR0MEMOBJINTERNAL ppMem, void *pv, size_t cb, uint32_t fAccess) +{ + /* Kernel memory (always?) wired; all memory allocated by vbox code is? */ + PRTR0MEMOBJNETBSD pMemNetBSD = (PRTR0MEMOBJNETBSD)rtR0MemObjNew(sizeof(*pMemNetBSD), RTR0MEMOBJTYPE_LOCK, pv, cb); + if (!pMemNetBSD) + return VERR_NO_MEMORY; + + pMemNetBSD->Core.u.Lock.R0Process = NIL_RTR0PROCESS; + pMemNetBSD->Core.pv = pv; + *ppMem = &pMemNetBSD->Core; + return VINF_SUCCESS; +} + +DECLHIDDEN(int) rtR0MemObjNativeReserveKernel(PPRTR0MEMOBJINTERNAL ppMem, void *pvFixed, size_t cb, size_t uAlignment) +{ + if (pvFixed != (void *)-1) + { + /* can we support this? or can we assume the virtual space is already reserved? */ + printf("reserve specified kernel virtual address not supported\n"); + return VERR_NOT_SUPPORTED; + } + + PRTR0MEMOBJNETBSD pMemNetBSD = (PRTR0MEMOBJNETBSD)rtR0MemObjNew(sizeof(*pMemNetBSD), RTR0MEMOBJTYPE_RES_VIRT, NULL, cb); + if (!pMemNetBSD) + return VERR_NO_MEMORY; + + vaddr_t virt = uvm_km_alloc(kernel_map, cb, uAlignment, + UVM_KMF_VAONLY | UVM_KMF_WAITVA | UVM_KMF_CANFAIL); + if (virt == 0) + { + rtR0MemObjDelete(&pMemNetBSD->Core); + return VERR_NO_MEMORY; + } + + pMemNetBSD->Core.u.ResVirt.R0Process = NIL_RTR0PROCESS; + pMemNetBSD->Core.pv = (void *)virt; + *ppMem = &pMemNetBSD->Core; + return VINF_SUCCESS; +} + + +DECLHIDDEN(int) rtR0MemObjNativeReserveUser(PPRTR0MEMOBJINTERNAL ppMem, RTR3PTR R3PtrFixed, size_t cb, size_t uAlignment, RTR0PROCESS R0Process) +{ + printf("NativeReserveUser\n"); + return VERR_NOT_SUPPORTED; +} + + +DECLHIDDEN(int) rtR0MemObjNativeMapKernel(PPRTR0MEMOBJINTERNAL ppMem, RTR0MEMOBJ pMemToMap, void *pvFixed, size_t uAlignment, + unsigned fProt, size_t offSub, size_t cbSub) +{ + if (pvFixed != (void *)-1) + { + /* can we support this? or can we assume the virtual space is already reserved? */ + printf("map to specified kernel virtual address not supported\n"); + return VERR_NOT_SUPPORTED; + } + + PRTR0MEMOBJNETBSD pMemNetBSD0 = (PRTR0MEMOBJNETBSD)pMemToMap; + if ((pMemNetBSD0->Core.enmType != RTR0MEMOBJTYPE_PHYS) + && (pMemNetBSD0->Core.enmType != RTR0MEMOBJTYPE_PHYS_NC)) + { + printf("memory to map is not physical\n"); + return VERR_NOT_SUPPORTED; + } + size_t sz = cbSub > 0 ? cbSub : pMemNetBSD0->Core.cb; + + PRTR0MEMOBJNETBSD pMemNetBSD = (PRTR0MEMOBJNETBSD)rtR0MemObjNew(sizeof(*pMemNetBSD), RTR0MEMOBJTYPE_MAPPING, NULL, sz); + + vaddr_t virt = uvm_km_alloc(kernel_map, sz, uAlignment, + UVM_KMF_VAONLY | UVM_KMF_WAITVA | UVM_KMF_CANFAIL); + if (virt == 0) + { + rtR0MemObjDelete(&pMemNetBSD->Core); + return VERR_NO_MEMORY; + } + + vm_prot_t prot = 0; + + if ((fProt & RTMEM_PROT_READ) == RTMEM_PROT_READ) + prot |= VM_PROT_READ; + if ((fProt & RTMEM_PROT_WRITE) == RTMEM_PROT_WRITE) + prot |= VM_PROT_WRITE; + if ((fProt & RTMEM_PROT_EXEC) == RTMEM_PROT_EXEC) + prot |= VM_PROT_EXECUTE; + + struct vm_page *page; + vaddr_t virt2 = virt; + size_t map_pos = 0; + TAILQ_FOREACH(page, &pMemNetBSD0->pglist, pageq.queue) + { + if (map_pos >= offSub) + { + if (cbSub > 0 && (map_pos >= offSub + cbSub)) + break; + + pmap_kenter_pa(virt2, VM_PAGE_TO_PHYS(page), prot, 0); + virt2 += PAGE_SIZE; + } + map_pos += PAGE_SIZE; + } + + pMemNetBSD->Core.pv = (void *)virt; + pMemNetBSD->Core.u.Mapping.R0Process = NIL_RTR0PROCESS; + *ppMem = &pMemNetBSD->Core; + + return VINF_SUCCESS; +} + + +DECLHIDDEN(int) rtR0MemObjNativeMapUser(PPRTR0MEMOBJINTERNAL ppMem, RTR0MEMOBJ pMemToMap, RTR3PTR R3PtrFixed, size_t uAlignment, + unsigned fProt, RTR0PROCESS R0Process) +{ + printf("NativeMapUser\n"); + return VERR_NOT_SUPPORTED; +} + + +DECLHIDDEN(int) rtR0MemObjNativeProtect(PRTR0MEMOBJINTERNAL pMem, size_t offSub, size_t cbSub, uint32_t fProt) +{ + vm_prot_t ProtectionFlags = 0; + vaddr_t AddrStart = (vaddr_t)pMem->pv + offSub; + vm_map_t pVmMap = rtR0MemObjNetBSDGetMap(pMem); + + if (!pVmMap) + return VERR_NOT_SUPPORTED; + + if ((fProt & RTMEM_PROT_READ) == RTMEM_PROT_READ) + ProtectionFlags |= UVM_PROT_R; + if ((fProt & RTMEM_PROT_WRITE) == RTMEM_PROT_WRITE) + ProtectionFlags |= UVM_PROT_W; + if ((fProt & RTMEM_PROT_EXEC) == RTMEM_PROT_EXEC) + ProtectionFlags |= UVM_PROT_X; + + int error = uvm_map_protect(pVmMap, AddrStart, AddrStart + cbSub, + ProtectionFlags, 0); + if (!error) + return VINF_SUCCESS; + + return VERR_NOT_SUPPORTED; +} + + +DECLHIDDEN(RTHCPHYS) rtR0MemObjNativeGetPagePhysAddr(PRTR0MEMOBJINTERNAL pMem, size_t iPage) +{ + PRTR0MEMOBJNETBSD pMemNetBSD = (PRTR0MEMOBJNETBSD)pMem; + + switch (pMemNetBSD->Core.enmType) + { + case RTR0MEMOBJTYPE_PAGE: + case RTR0MEMOBJTYPE_LOW: + { + vaddr_t va = (vaddr_t)pMemNetBSD->Core.pv + ptoa(iPage); + paddr_t pa = 0; + pmap_extract(pmap_kernel(), va, &pa); + return pa; + } + case RTR0MEMOBJTYPE_CONT: + return pMemNetBSD->Core.u.Cont.Phys + ptoa(iPage); + case RTR0MEMOBJTYPE_PHYS: + return pMemNetBSD->Core.u.Phys.PhysBase + ptoa(iPage); + case RTR0MEMOBJTYPE_PHYS_NC: + { + struct vm_page *page; + size_t i = 0; + TAILQ_FOREACH(page, &pMemNetBSD->pglist, pageq.queue) + { + if (i == iPage) + break; + i++; + } + return VM_PAGE_TO_PHYS(page); + } + case RTR0MEMOBJTYPE_LOCK: + case RTR0MEMOBJTYPE_MAPPING: + { + pmap_t pmap; + if (pMem->u.Lock.R0Process == NIL_RTR0PROCESS) + pmap = pmap_kernel(); + else + pmap = ((struct proc *)pMem->u.Lock.R0Process)->p_vmspace->vm_map.pmap; + vaddr_t va = (vaddr_t)pMemNetBSD->Core.pv + ptoa(iPage); + paddr_t pa = 0; + pmap_extract(pmap, va, &pa); + return pa; + } + case RTR0MEMOBJTYPE_RES_VIRT: + return NIL_RTHCPHYS; + default: + return NIL_RTHCPHYS; + } +} |