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489 lines
14 KiB
C
489 lines
14 KiB
C
/* $Id: mminit.c,v 1.70 2004/10/04 21:38:49 ion Exp $
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*
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* COPYRIGHT: See COPYING in the top directory
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* PROJECT: ReactOS kernel
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* FILE: ntoskrnl/mm/mminit.c
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* PURPOSE: kernel memory managment initialization functions
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* PROGRAMMER: David Welch (welch@cwcom.net)
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* UPDATE HISTORY:
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* Created 9/4/98
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*/
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/* INCLUDES *****************************************************************/
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#include <ntoskrnl.h>
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#define NDEBUG
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#include <internal/debug.h>
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/* GLOBALS *****************************************************************/
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/*
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* Compiler defined symbols
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*/
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extern unsigned int _text_start__;
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extern unsigned int _text_end__;
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extern unsigned int _init_start__;
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extern unsigned int _init_end__;
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extern unsigned int _bss_end__;
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static BOOLEAN IsThisAnNtAsSystem = FALSE;
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static MM_SYSTEM_SIZE MmSystemSize = MmSmallSystem;
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static MEMORY_AREA* kernel_text_desc = NULL;
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static MEMORY_AREA* kernel_init_desc = NULL;
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static MEMORY_AREA* kernel_kpcr_desc = NULL;
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static MEMORY_AREA* kernel_data_desc = NULL;
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static MEMORY_AREA* kernel_param_desc = NULL;
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static MEMORY_AREA* kernel_pool_desc = NULL;
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static MEMORY_AREA* kernel_shared_data_desc = NULL;
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static MEMORY_AREA* kernel_mapped_vga_framebuffer_desc = NULL;
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static MEMORY_AREA* MiKernelMapDescriptor = NULL;
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static MEMORY_AREA* MiPagedPoolDescriptor = NULL;
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PHYSICAL_ADDRESS MmSharedDataPagePhysicalAddress;
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PVOID MiNonPagedPoolStart;
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ULONG MiNonPagedPoolLength;
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//PVOID MiKernelMapStart;
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/* FUNCTIONS ****************************************************************/
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/*
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* @implemented
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*/
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BOOLEAN STDCALL MmIsThisAnNtAsSystem(VOID)
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{
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return(IsThisAnNtAsSystem);
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}
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/*
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* @implemented
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*/
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MM_SYSTEM_SIZE STDCALL MmQuerySystemSize(VOID)
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{
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return(MmSystemSize);
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}
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VOID MiShutdownMemoryManager(VOID)
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{}
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VOID INIT_FUNCTION
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MmInitVirtualMemory(ULONG LastKernelAddress,
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ULONG KernelLength)
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/*
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* FUNCTION: Intialize the memory areas list
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* ARGUMENTS:
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* bp = Pointer to the boot parameters
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* kernel_len = Length of the kernel
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*/
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{
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PVOID BaseAddress;
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ULONG Length;
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ULONG ParamLength = KernelLength;
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NTSTATUS Status;
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PHYSICAL_ADDRESS BoundaryAddressMultiple;
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PFN_TYPE Pfn;
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DPRINT("MmInitVirtualMemory(%x, %x)\n",LastKernelAddress, KernelLength);
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BoundaryAddressMultiple.QuadPart = 0;
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LastKernelAddress = PAGE_ROUND_UP(LastKernelAddress);
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MmInitMemoryAreas();
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MiNonPagedPoolStart = (char*)LastKernelAddress + PAGE_SIZE;
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MiNonPagedPoolLength = MM_NONPAGED_POOL_SIZE;
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MmPagedPoolBase = (char*)MiNonPagedPoolStart + MiNonPagedPoolLength + PAGE_SIZE;
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MmPagedPoolSize = MM_PAGED_POOL_SIZE;
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MiInitializeNonPagedPool();
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/*
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* Setup the system area descriptor list
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*/
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MiInitPageDirectoryMap();
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BaseAddress = (PVOID)KPCR_BASE;
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MmCreateMemoryArea(NULL,
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MmGetKernelAddressSpace(),
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MEMORY_AREA_SYSTEM,
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&BaseAddress,
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PAGE_SIZE * MAXIMUM_PROCESSORS,
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0,
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&kernel_kpcr_desc,
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TRUE,
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FALSE,
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BoundaryAddressMultiple);
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BaseAddress = (PVOID)0xFF3A0000;
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MmCreateMemoryArea(NULL,
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MmGetKernelAddressSpace(),
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MEMORY_AREA_SYSTEM,
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&BaseAddress,
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0x20000,
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0,
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&kernel_mapped_vga_framebuffer_desc,
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TRUE,
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FALSE,
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BoundaryAddressMultiple);
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BaseAddress = (PVOID)KERNEL_BASE;
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Length = PAGE_ROUND_UP(((ULONG)&_text_end__)) - KERNEL_BASE;
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ParamLength = ParamLength - Length;
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/*
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* No need to lock the address space at this point since no
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* other threads are running.
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*/
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MmCreateMemoryArea(NULL,
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MmGetKernelAddressSpace(),
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MEMORY_AREA_SYSTEM,
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&BaseAddress,
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Length,
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0,
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&kernel_text_desc,
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TRUE,
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FALSE,
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BoundaryAddressMultiple);
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BaseAddress = (PVOID)PAGE_ROUND_UP(((ULONG)&_text_end__));
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assert (BaseAddress == (PVOID)&_init_start__);
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Length = PAGE_ROUND_UP(((ULONG)&_init_end__)) -
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PAGE_ROUND_UP(((ULONG)&_text_end__));
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ParamLength = ParamLength - Length;
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MmCreateMemoryArea(NULL,
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MmGetKernelAddressSpace(),
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MEMORY_AREA_SYSTEM,
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&BaseAddress,
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Length,
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0,
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&kernel_init_desc,
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TRUE,
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FALSE,
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BoundaryAddressMultiple);
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Length = PAGE_ROUND_UP(((ULONG)&_bss_end__)) -
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PAGE_ROUND_UP(((ULONG)&_init_end__));
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ParamLength = ParamLength - Length;
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DPRINT("Length %x\n",Length);
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BaseAddress = (PVOID)PAGE_ROUND_UP(((ULONG)&_init_end__));
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DPRINT("BaseAddress %x\n",BaseAddress);
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/*
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* No need to lock the address space at this point since we are
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* the only thread running.
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*/
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MmCreateMemoryArea(NULL,
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MmGetKernelAddressSpace(),
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MEMORY_AREA_SYSTEM,
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&BaseAddress,
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Length,
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0,
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&kernel_data_desc,
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TRUE,
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FALSE,
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BoundaryAddressMultiple);
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BaseAddress = (PVOID)PAGE_ROUND_UP(((ULONG)&_bss_end__));
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Length = LastKernelAddress - (ULONG)BaseAddress;
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MmCreateMemoryArea(NULL,
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MmGetKernelAddressSpace(),
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MEMORY_AREA_SYSTEM,
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&BaseAddress,
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Length,
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0,
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&kernel_param_desc,
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TRUE,
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FALSE,
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BoundaryAddressMultiple);
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BaseAddress = MiNonPagedPoolStart;
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MmCreateMemoryArea(NULL,
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MmGetKernelAddressSpace(),
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MEMORY_AREA_SYSTEM,
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&BaseAddress,
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MiNonPagedPoolLength,
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0,
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&kernel_pool_desc,
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TRUE,
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FALSE,
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BoundaryAddressMultiple);
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BaseAddress = (PVOID)MM_KERNEL_MAP_BASE;
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Status = MmCreateMemoryArea(NULL,
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MmGetKernelAddressSpace(),
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MEMORY_AREA_SYSTEM,
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&BaseAddress,
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MM_KERNEL_MAP_SIZE,
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0,
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&MiKernelMapDescriptor,
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TRUE,
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FALSE,
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BoundaryAddressMultiple);
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BaseAddress = MmPagedPoolBase;
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Status = MmCreateMemoryArea(NULL,
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MmGetKernelAddressSpace(),
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MEMORY_AREA_PAGED_POOL,
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&BaseAddress,
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MmPagedPoolSize,
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0,
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&MiPagedPoolDescriptor,
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TRUE,
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FALSE,
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BoundaryAddressMultiple);
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MmInitializePagedPool();
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/*
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* Create the kernel mapping of the user/kernel shared memory.
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*/
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BaseAddress = (PVOID)KI_USER_SHARED_DATA;
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Length = PAGE_SIZE;
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MmCreateMemoryArea(NULL,
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MmGetKernelAddressSpace(),
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MEMORY_AREA_SYSTEM,
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&BaseAddress,
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Length,
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0,
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&kernel_shared_data_desc,
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TRUE,
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FALSE,
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BoundaryAddressMultiple);
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Status = MmRequestPageMemoryConsumer(MC_NPPOOL, TRUE, &Pfn);
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MmSharedDataPagePhysicalAddress.QuadPart = Pfn << PAGE_SHIFT;
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Status = MmCreateVirtualMapping(NULL,
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(PVOID)KI_USER_SHARED_DATA,
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PAGE_READWRITE,
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&Pfn,
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1);
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if (!NT_SUCCESS(Status))
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{
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DbgPrint("Unable to create virtual mapping\n");
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KEBUGCHECK(0);
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}
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RtlZeroMemory(BaseAddress, Length);
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/*
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*
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*/
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MmInitializeMemoryConsumer(MC_USER, MmTrimUserMemory);
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}
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VOID INIT_FUNCTION
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MmInit1(ULONG FirstKrnlPhysAddr,
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ULONG LastKrnlPhysAddr,
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ULONG LastKernelAddress,
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PADDRESS_RANGE BIOSMemoryMap,
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ULONG AddressRangeCount,
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ULONG MaxMem)
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/*
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* FUNCTION: Initalize memory managment
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*/
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{
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ULONG i;
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ULONG kernel_len;
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#ifndef MP
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extern unsigned int unmap_me, unmap_me2, unmap_me3;
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#endif
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DPRINT("MmInit1(FirstKrnlPhysAddr, %x, LastKrnlPhysAddr %x, LastKernelAddress %x)\n",
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FirstKrnlPhysAddr,
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LastKrnlPhysAddr,
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LastKernelAddress);
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if ((BIOSMemoryMap != NULL) && (AddressRangeCount > 0))
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{
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// If we have a bios memory map, recalulate the memory size
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ULONG last = 0;
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for (i = 0; i < AddressRangeCount; i++)
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{
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if (BIOSMemoryMap[i].Type == 1
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&& (BIOSMemoryMap[i].BaseAddrLow + BIOSMemoryMap[i].LengthLow + PAGE_SIZE -1) / PAGE_SIZE > last)
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{
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last = (BIOSMemoryMap[i].BaseAddrLow + BIOSMemoryMap[i].LengthLow + PAGE_SIZE -1) / PAGE_SIZE;
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}
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}
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if ((last - 256) * 4 > KeLoaderBlock.MemHigher)
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{
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KeLoaderBlock.MemHigher = (last - 256) * 4;
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}
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}
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if (KeLoaderBlock.MemHigher >= (MaxMem - 1) * 1024)
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{
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KeLoaderBlock.MemHigher = (MaxMem - 1) * 1024;
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}
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/*
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* FIXME: Set this based on the system command line
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*/
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MmSystemRangeStart = (PVOID)KERNEL_BASE; // 0xC0000000
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MmUserProbeAddress = (PVOID)0x7fff0000;
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MmHighestUserAddress = (PVOID)0x7ffeffff;
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/*
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* Initialize memory managment statistics
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*/
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MmStats.NrTotalPages = 0;
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MmStats.NrSystemPages = 0;
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MmStats.NrUserPages = 0;
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MmStats.NrReservedPages = 0;
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MmStats.NrUserPages = 0;
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MmStats.NrFreePages = 0;
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MmStats.NrLockedPages = 0;
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MmStats.PagingRequestsInLastMinute = 0;
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MmStats.PagingRequestsInLastFiveMinutes = 0;
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MmStats.PagingRequestsInLastFifteenMinutes = 0;
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/*
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* Free all pages not used for kernel memory
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* (we assume the kernel occupies a continuous range of physical
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* memory)
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*/
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DPRINT("first krnl %x\nlast krnl %x\n",FirstKrnlPhysAddr,
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LastKrnlPhysAddr);
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/*
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* Free physical memory not used by the kernel
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*/
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MmStats.NrTotalPages = KeLoaderBlock.MemHigher/4;
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if (!MmStats.NrTotalPages)
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{
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DbgPrint("Memory not detected, default to 8 MB\n");
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MmStats.NrTotalPages = 2048;
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}
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else
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{
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/* add 1MB for standard memory (not extended) */
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MmStats.NrTotalPages += 256;
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}
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#ifdef BIOS_MEM_FIX
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MmStats.NrTotalPages += 16;
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#endif
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/*
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* Initialize the kernel address space
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*/
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MmInitializeKernelAddressSpace();
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MmInitGlobalKernelPageDirectory();
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MiInitKernelMap();
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DbgPrint("Used memory %dKb\n", (MmStats.NrTotalPages * PAGE_SIZE) / 1024);
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LastKernelAddress = (ULONG)MmInitializePageList((PVOID)FirstKrnlPhysAddr,
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(PVOID)LastKrnlPhysAddr,
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MmStats.NrTotalPages,
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PAGE_ROUND_UP(LastKernelAddress),
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BIOSMemoryMap,
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AddressRangeCount);
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kernel_len = LastKrnlPhysAddr - FirstKrnlPhysAddr;
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/*
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* Unmap low memory
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*/
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#ifndef MP
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/* In SMP mode we unmap the low memory in MmInit3.
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The APIC needs the mapping of the first pages
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while the processors are starting up. */
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MmDeletePageTable(NULL, 0);
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#endif
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DPRINT("Invalidating between %x and %x\n",
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LastKernelAddress, KERNEL_BASE + 0x00600000);
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for (i=(LastKernelAddress); i<KERNEL_BASE + 0x00600000; i+=PAGE_SIZE)
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{
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MmRawDeleteVirtualMapping((PVOID)(i));
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}
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extern unsigned int pagetable_start, pagetable_end;
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for (i = (ULONG_PTR)&pagetable_start; i < (ULONG_PTR)&pagetable_end; i += PAGE_SIZE)
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{
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MmDeleteVirtualMapping(NULL, (PVOID)i, FALSE, NULL, NULL);
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}
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DPRINT("Almost done MmInit()\n");
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#ifndef MP
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/* FIXME: This is broken in SMP mode */
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MmDeleteVirtualMapping(NULL, (PVOID)&unmap_me, TRUE, NULL, NULL);
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MmDeleteVirtualMapping(NULL, (PVOID)&unmap_me2, TRUE, NULL, NULL);
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MmDeleteVirtualMapping(NULL, (PVOID)&unmap_me3, TRUE, NULL, NULL);
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#endif
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/*
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* Intialize memory areas
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*/
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MmInitVirtualMemory(LastKernelAddress, kernel_len);
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MmInitializeMdlImplementation();
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}
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VOID INIT_FUNCTION
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MmInit2(VOID)
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{
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MmInitializeRmapList();
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MmInitializePageOp();
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MmInitSectionImplementation();
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MmInitPagingFile();
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}
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VOID INIT_FUNCTION
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MmInit3(VOID)
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{
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/*
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* Unmap low memory
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*/
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#ifdef MP
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/* In SMP mode we can unmap the low memory
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if all processors are started. */
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MmDeletePageTable(NULL, 0);
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#endif
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MmInitZeroPageThread();
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MmCreatePhysicalMemorySection();
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MiInitBalancerThread();
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/*
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* Initialise the modified page writer.
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*/
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MmInitMpwThread();
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/* FIXME: Read parameters from memory */
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}
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VOID STATIC
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MiFreeInitMemoryPage(PVOID Context, MEMORY_AREA* MemoryArea, PVOID Address,
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PFN_TYPE Page, SWAPENTRY SwapEntry,
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BOOLEAN Dirty)
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{
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assert(SwapEntry == 0);
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if (Page != 0)
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{
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MmReleasePageMemoryConsumer(MC_NPPOOL, Page);
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}
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}
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VOID
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MiFreeInitMemory(VOID)
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{
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MmLockAddressSpace(MmGetKernelAddressSpace());
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MmFreeMemoryArea(MmGetKernelAddressSpace(),
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(PVOID)&_init_start__,
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PAGE_ROUND_UP((ULONG)&_init_end__) - (ULONG)_init_start__,
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MiFreeInitMemoryPage,
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NULL);
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MmUnlockAddressSpace(MmGetKernelAddressSpace());
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}
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