X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/55e303ae13a4cf49d70f2294092726f2fffb9ef2..c0fea4742e91338fffdcf79f86a7c1d5e2b97eb1:/iokit/Kernel/IOMapper.cpp?ds=inline diff --git a/iokit/Kernel/IOMapper.cpp b/iokit/Kernel/IOMapper.cpp index c1795da6c..f2f0633c3 100644 --- a/iokit/Kernel/IOMapper.cpp +++ b/iokit/Kernel/IOMapper.cpp @@ -1,24 +1,21 @@ /* - * Copyright (c) 1998-2003 Apple Computer, Inc. All rights reserved. + * Copyright (c) 1998-2004 Apple Computer, Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * - * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved. + * The contents of this file constitute Original Code as defined in and + * are subject to the Apple Public Source License Version 1.1 (the + * "License"). You may not use this file except in compliance with the + * License. Please obtain a copy of the License at + * http://www.apple.com/publicsource and read it before using this file. * - * This file contains Original Code and/or Modifications of Original Code - * as defined in and that are subject to the Apple Public Source License - * Version 2.0 (the 'License'). You may not use this file except in - * compliance with the License. Please obtain a copy of the License at - * http://www.opensource.apple.com/apsl/ and read it before using this - * file. - * - * The Original Code and all software distributed under the License are - * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER + * This Original Code and all software distributed under the License are + * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. - * Please see the License for the specific language governing rights and - * limitations under the License. + * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the + * License for the specific language governing rights and limitations + * under the License. * * @APPLE_LICENSE_HEADER_END@ */ @@ -26,10 +23,16 @@ #include #include +#include "IOCopyMapper.h" + +__BEGIN_DECLS +extern ppnum_t pmap_find_phys(pmap_t pmap, addr64_t va); +__END_DECLS + #define super IOService OSDefineMetaClassAndAbstractStructors(IOMapper, IOService); -OSMetaClassDefineReservedUnused(IOMapper, 0); +OSMetaClassDefineReservedUsed(IOMapper, 0); OSMetaClassDefineReservedUnused(IOMapper, 1); OSMetaClassDefineReservedUnused(IOMapper, 2); OSMetaClassDefineReservedUnused(IOMapper, 3); @@ -133,96 +136,44 @@ void IOMapper::iovmInsert(ppnum_t addr, IOItemCount offset, iovmInsert(addr, offset + i, pageList[i].phys_addr); } -struct ARTTableData { - void *v; - upl_t u[0]; -}; -#define getARTDataP(data) ((ARTTableData *) (data)->getBytesNoCopy()) - -OSData * -IOMapper::NewARTTable(IOByteCount size, - void ** virtAddrP, ppnum_t *physAddrP) +OSData * IOMapper:: +NewARTTable(IOByteCount size, void ** virtAddrP, ppnum_t *physAddrP) { - OSData *ret; + if (!virtAddrP || !physAddrP) + return 0; + kern_return_t kr; - vm_address_t startUpl; - ARTTableData *dataP; - unsigned int dataSize; - upl_page_info_t *pl = 0; + vm_address_t address; - // Each UPL can deal with about one meg at the moment size = round_page_32(size); - dataSize = sizeof(ARTTableData) + sizeof(upl_t) * size / (1024 * 1024); - ret = OSData::withCapacity(dataSize); - if (!ret) + kr = kmem_alloc_contig(kernel_map, &address, size, PAGE_MASK, 0); + if (kr) return 0; - // Append 0's to the buffer, in-other-words reset to nulls. - ret->appendBytes(NULL, sizeof(ARTTableData)); - dataP = getARTDataP(ret); + ppnum_t pagenum = pmap_find_phys(kernel_pmap, (addr64_t) address); + if (pagenum) + *physAddrP = pagenum; + else { + FreeARTTable((OSData *) address, size); + address = 0; + } - kr = kmem_alloc_contig(kernel_map, &startUpl, size, PAGE_MASK, 0); - if (kr) - return 0; + *virtAddrP = (void *) address; - dataP->v = (void *) startUpl; - - do { - upl_t iopl; - int upl_flags = UPL_SET_INTERNAL | UPL_SET_LITE - | UPL_SET_IO_WIRE | UPL_COPYOUT_FROM; - vm_size_t iopl_size = size; - - kr = vm_map_get_upl(kernel_map, - startUpl, - &iopl_size, - &iopl, - 0, - 0, - &upl_flags, - 0); - if (kr) { - panic("IOMapper:vm_map_get_upl returned 0x%x\n"); - goto bail; - } - - if (!ret->appendBytes(&iopl, sizeof(upl_t))) - goto bail; - - startUpl += iopl_size; - size -= iopl_size; - } while(size); - - // Need to re-establish the dataP as the OSData may have grown. - dataP = getARTDataP(ret); - - // Now grab the page entry of the first page and get its phys addr - pl = UPL_GET_INTERNAL_PAGE_LIST(dataP->u[0]); - *physAddrP = pl->phys_addr; - *virtAddrP = dataP->v; - - return ret; - -bail: - FreeARTTable(ret, size); - return 0; + return (OSData *) address; } void IOMapper::FreeARTTable(OSData *artHandle, IOByteCount size) { - assert(artHandle); - - ARTTableData *dataP = getARTDataP(artHandle); + vm_address_t address = (vm_address_t) artHandle; - int numupls = ((artHandle->getLength() - sizeof(*dataP)) / sizeof(upl_t)); - for (int i = 0; i < numupls; i++) - kernel_upl_abort(dataP->u[i], 0); + size = round_page_32(size); + kmem_free(kernel_map, address, size); // Just panic if address is 0 +} - if (dataP->v) { - size = round_page_32(size); - kmem_free(kernel_map, (vm_address_t) dataP->v, size); - } - artHandle->release(); +bool IOMapper::getBypassMask(addr64_t *maskP) const +{ + return false; } __BEGIN_DECLS @@ -386,4 +337,24 @@ void IOMappedWrite64(IOPhysicalAddress address, UInt64 value) ml_phys_write_double((vm_offset_t) address, value); } +mach_vm_address_t IOMallocPhysical(mach_vm_size_t size, mach_vm_address_t mask) +{ + mach_vm_address_t address = 0; + if (gIOCopyMapper) + { + address = ptoa_64(gIOCopyMapper->iovmAlloc(atop_64(round_page(size)))); + } + + return (address); +} + +void IOFreePhysical(mach_vm_address_t address, mach_vm_size_t size) +{ + if (gIOCopyMapper) + { + gIOCopyMapper->iovmFree(atop_64(address), atop_64(round_page(size))); + } +} + + __END_DECLS