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Header rationalization for mm/ dir

This commit is contained in:
Adrien Bourmault 2020-01-12 16:53:23 +01:00
parent 3bce4c6208
commit 7c0fd93ad5
8 changed files with 39 additions and 268 deletions
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213
include/mm/mm.h
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@ -1,213 +0,0 @@
//----------------------------------------------------------------------------//
// GNU GPL OS/K //
// //
// Desc: Memory manager functions //
// //
// //
// Copyright © 2018-2019 The OS/K Team //
// //
// This file is part of OS/K. //
// //
// OS/K is free software: you can redistribute it and/or modify //
// it under the terms of the GNU General Public License as published by //
// the Free Software Foundation, either version 3 of the License, or //
// any later version. //
// //
// OS/K is distributed in the hope that it will be useful, //
// but WITHOUT ANY WARRANTY//without even the implied warranty of //
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
// GNU General Public License for more details. //
// //
// You should have received a copy of the GNU General Public License //
// along with OS/K. If not, see <https://www.gnu.org/licenses/>. //
//----------------------------------------------------------------------------//
#ifndef _KERNEL_H
#include <kernel.h>
#endif
#ifndef _MM_MM_H
#define _MM_MM_H
//----------------------------------------------------------------------------//
#define MINIMUM_RAM_SIZE 16 // Mio, the minimum RAM size.
#define IOMAP_SIZE (8 * 1024)
#define AVAILABLE_ZONE 1 // Fully usable RAM zone
#define RESERVED_ZONE 2 // Used by the firmware
#define ACPI_ZONE 3 // Used by ACPI but can be freed
#define NVS_ZONE 4 // Dunno
#define BADRAM_ZONE 5 // Invalid zone because material problem...
#define MAX_ENTRIES 2048 // Max number of memory map entries
#define KPAGESIZE (4 * KB)
#define UPAGESIZE (4 * KB)
//----------------------------------------------------------------------------//
// The entry structure of the map
struct MapEntry_t {
void *addr;
size_t length; // in bytes
uint type; // reserved or not
} __attribute__((__packed__));
// the map structure
struct MemoryMap_t {
size_t length;
size_t freeRamSize;
size_t nonfreeRamSize;
MapEntry_t entry[MAX_ENTRIES];
} __attribute__((__packed__));
// The gdt entry
struct GdtEntry_t
{
ushort lowLimit; // lower 16 bits
ushort lowBase; // lower 16 bits
uchar middleBase; // next 8 bits
uchar access; // determine what ring this segment can be used in
uchar flags;
uchar highBase; // last 8 bits
} __attribute__((__packed__));
struct TssDescriptor_t
{
ushort lowLimit;
ushort lowBase;
uchar middleBase;
uchar access;
uchar flags;
uchar highBase;
uint veryHighBase;
uint reserved;
} __attribute__ ((packed));
struct Tss_t
{
uint reserved1;
// Stack pointers (RSP) for privilege levels 0-2
ulong rsp0;
ulong rsp1;
ulong rsp2;
ulong reserved2;
// Interrupt stack table pointers
ulong ist1;
ulong ist2;
ulong ist3;
ulong ist4;
ulong ist5;
ulong ist6;
ulong ist7;
ulong reserved3;
ushort reserved4;
// Offset to the I/O permission bit map from the 64-bit TSS base
ushort iomap_base;
uchar iomap[IOMAP_SIZE];
} __attribute__ ((packed)) __attribute__((aligned(8)));
// The gdt pointer
struct GdtPtr_t
{
ushort limit; // upper 16 bits
ulong base; // address of the first entry
} __attribute__((__packed__));
//----------------------------------------------------------------------------//
//
// Initializes the memory map structure
//
void MmInitMemoryMap(void);
//
// Initializes the memory map structure
//
void MmPrintMemoryMap(void);
//
// Returns the size of the first available memory zone
// from the start address pointer
//
size_t MmGetAvailZoneSize(void *start);
//
// Returns the first available memory zone from the start address pointer
//
void *MmGetFirstAvailZone(void *start);
//
// Initializes the descriptor table
//
void MmInitGdt(void);
//
// Loads the descriptor table
//
extern void MmLoadGdt(GdtPtr_t *gdtPtr, ushort tssOffset);
//
// Stores the descriptor table
//
extern void MmStoreGdt(void);
//
// Paging misc
//
void MmInitPaging(void);
void MmActivatePageHandler(void);
//
// Returns the address of the stack guard pages
//
void *MmGetStackGuards(char rank);
//
// Translate a virtual address into physical address and the opposite
//
void *MmTransVirtToPhyAddr(void*);
void *MmTransPhyToVirtAddr(void* virtualAddr);
//
// Set flags to a page
//
void MmSetPage(void* virtualAddr, ulong flags);
void MmUnSetPage(void* virtualAddr, ulong flags);
//
// Map a page
//
void MmMapPage(void* virtualAddr, void* physicalAddr, ulong flags);
void MmUnmapPage(void* virtualAddr);
// Allocations
void *MmGetPhyPageBlock(size_t size, bool usermode);
// Page table entry
typedef ulong pte_t;
// Page directory offset
typedef pte_t* pde_t;
// Page directory pointer offset
typedef pde_t* pdpe_t;
// Page directory L4 pointer offset
typedef pdpe_t* pml4_t;
// paging.asm
void MmLoadPML4(void *);
void MmEnableWriteProtect(void);
void MmDisableWriteProtect(void);
//----------------------------------------------------------------------------//
#endif

4
kaleid/kernel/init/init.c
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@ -22,7 +22,9 @@
// along with OS/K. If not, see <https://www.gnu.org/licenses/>. //
//----------------------------------------------------------------------------//
#include <mm/mm.h>
#include <mm/gdt.h>
#include <mm/map.h>
#include <mm/paging.h>
#include <mm/heap.h>
#include <ke/idt.h>
#include <ke/time.h>

5
kaleid/kernel/mm/gdt.c
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@ -1,7 +1,7 @@
//----------------------------------------------------------------------------//
// GNU GPL OS/K //
// //
// Desc: Mapping and checking memory related functions //
// Desc: GDT related functions //
// //
// //
// Copyright © 2018-2019 The OS/K Team //
@ -22,7 +22,8 @@
// along with OS/K. If not, see <https://www.gnu.org/licenses/>. //
//----------------------------------------------------------------------------//
#include <mm/mm.h>
#include <mm/gdt.h>
#include <mm/paging.h>
#include <init/boot.h>
GdtPtr_t gdtPtr;

2
kaleid/kernel/mm/heap.c
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@ -22,7 +22,7 @@
// along with OS/K. If not, see <https://www.gnu.org/licenses/>. //
//----------------------------------------------------------------------------//
#include <mm/mm.h>
#include <mm/map.h>
#include <mm/heap.h>
#include <ex/lock.h>
#include <init/boot.h>

2
kaleid/kernel/mm/map.c
View File

@ -22,7 +22,7 @@
// along with OS/K. If not, see <https://www.gnu.org/licenses/>. //
//----------------------------------------------------------------------------//
#include <mm/mm.h>
#include <mm/map.h>
#include <init/boot.h>
#include <init/mboot.h>
#include <io/vga.h>

73
kaleid/kernel/mm/paging.c
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@ -1,8 +1,33 @@
//----------------------------------------------------------------------------//
// GNU GPL OS/K //
// //
// Desc: Paging memory related functions //
// //
// //
// Copyright © 2018-2019 The OS/K Team //
// //
// This file is part of OS/K. //
// //
// OS/K is free software: you can redistribute it and/or modify //
// it under the terms of the GNU General Public License as published by //
// the Free Software Foundation, either version 3 of the License, or //
// any later version. //
// //
// OS/K is distributed in the hope that it will be useful, //
// but WITHOUT ANY WARRANTY//without even the implied warranty of //
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
// GNU General Public License for more details. //
// //
// You should have received a copy of the GNU General Public License //
// along with OS/K. If not, see <https://www.gnu.org/licenses/>. //
//----------------------------------------------------------------------------
#include <kernel.h>
#include <init/boot.h>
#include <ex/malloc.h>
#include <mm/heap.h>
#include <mm/mm.h>
#include <mm/paging.h>
#include <mm/map.h>
#include <ke/idt.h>
#include <lib/buf.h>
#include <io/vga.h>
@ -292,52 +317,6 @@ void MmUnmapPage(void* virtualAddr)
KeFlushTlbSingle(*page);
}
//
// Find a free block of pages
//
/* void *MmGetPhyPageBlock(size_t size, bool usermode) { */
/* void *startPhyPage = 0; */
/* void *endPhyPage = 0; */
/* ulong offset = 0; */
/* size_t curSize = 0; */
/* // Maximum PHYSICAL address in memory */
/* ulong phRamSize = memoryMap.freeRamSize + memoryMap.nonfreeRamSize; */
/* ulong curVirtAddr = 0; */
/* if (!usermode) { */
/* startPhyPage = MmTransVirtToPhyAddr((void*)KPAGESIZE); */
/* endPhyPage = (void*)MmPhysLastKernAddress; */
/* offset = 0; */
/* } else { */
/* startPhyPage = MmTransVirtToPhyAddr((void*)USERSPACE); */
/* endPhyPage = (void*)(phRamSize & ~(KPAGESIZE - 1)); */
/* offset = (ulong)USERSPACE - MmPhysLastKernAddress - KPAGESIZE; */
/* } */
/* DebugLog("Start phy at %p\n", startPhyPage); */
/* DebugLog("End phy at %p\n", endPhyPage); */
/* for (ulong curPhyAddr = (ulong)startPhyPage; */
/* curPhyAddr <= (ulong)endPhyPage; */
/* curPhyAddr += KPAGESIZE) { */
/* curVirtAddr = (ulong)MmTransPhyToVirtAddr((void*)curPhyAddr); */
/* if (curVirtAddr == 0) { */
/* DebugLog("CurrentAddr %p\n", curPhyAddr); */
/* DebugLog("\t Free !\n"); */
/* curSize += KPAGESIZE; */
/* } */
/* if (curSize >= size) */
/* break; */
/* } */
/* return NULL; */
/* } */
//-----------
//

3
kaleid/kernel/sh/shcmds.c
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@ -23,7 +23,8 @@
//----------------------------------------------------------------------------//
#include <vers.h>
#include <mm/mm.h>
#include <mm/paging.h>
#include <mm/map.h>
#include <io/ata.h>
#include <io/vga.h>
#include <io/spkr.h>

5
kaleid/kernel/sh/testcmds.c
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@ -23,7 +23,8 @@
//----------------------------------------------------------------------------//
#include <vers.h>
#include <mm/mm.h>
#include <mm/paging.h>
#include <mm/map.h>
#include <io/ata.h>
#include <io/vga.h>
#include <io/spkr.h>
@ -255,7 +256,7 @@ error_t CmdPageBlock(int argc, char **argv, char *cmdline)
size_t size = (size_t)atoi(argv[1]);
bool usermode = (bool)atoi(argv[2]);
MmGetPhyPageBlock(size, usermode);
//MmGetPhyPageBlock(size, usermode);
return EOK;
}