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[tpg/acess2.git] / KernelLand / Kernel / arch / x86 / include / mm_virt.h

diff --git a/KernelLand/Kernel/arch/x86/include/mm_virt.h b/KernelLand/Kernel/arch/x86/include/mm_virt.h
new file mode 100644 (file)
index 0000000..d84c965
--- /dev/null
+++ b/KernelLand/Kernel/arch/x86/include/mm_virt.h
@@ -0,0 +1,53 @@
+/*
+ * Acess2
+ * - Virtual Memory Manager (Header)
+ */
+#ifndef _MM_VIRT_H
+#define _MM_VIRT_H
+
+// NOTES:
+// - 1PD is 0x400000
+
+// - Memory Layout
+#define        MM_USER_MIN     0x00200000
+#define        USER_STACK_SZ   0x00020000      // 128 KiB
+#define        USER_STACK_TOP  0x00800000
+#define USER_LIB_MAX   0xBC000000
+#define        MM_USER_MAX     0xBC000000      // Top load address for user libraries
+#define        MM_PPD_MIN      0xBC000000      // Per-Process Data base
+#define        MM_PPD_HANDLES  0xBC000000      // - VFS Handles (Practically unlimited)
+#define        MM_PPD_MMAP     0xBD000000      // - MMap Entries (24b each = 0x2AAAA max)
+#define        MM_PPD_UNALLOC  0xBE000000      //
+#define MM_PPD_CFG     0xBFFFF000      // - Per-process config entries 
+#define        MM_PPD_MAX      0xC0000000      // 
+
+#define        MM_KHEAP_BASE   0xC0400000      // C+4MiB
+#define        MM_KHEAP_MAX    0xCF000000      //
+#define MM_KERNEL_VFS  0xCF000000      // 
+#define MM_KUSER_CODE  0xCFFF0000      // 16 Pages
+#define        MM_MODULE_MIN   0xD0000000      // Lowest Module Address
+#define MM_MODULE_MAX  0xE0000000      // 128 MiB
+
+// Page Info (Which VFS node owns each physical page)
+// 2^32/2^12*16
+// = 2^24 = 16 MiB = 0x4000000
+// 256 items per page
+#define MM_PAGENODE_BASE       0xE0000000
+
+// Needs (2^32/2^12*4 bytes)
+// - 2^22 bytes max = 4 MiB = 0x1000000
+// 1024 items per page
+#define        MM_REFCOUNT_BASE        0xE4000000
+
+#define MM_KERNEL_STACKS       0xF0000000
+#define        MM_KERNEL_STACK_SIZE    0x00008000
+#define MM_KERNEL_STACKS_END   0xFC000000
+
+// === FUNCTIONS ===
+extern void    MM_FinishVirtualInit(void);
+extern void    MM_SetCR3(Uint CR3);
+extern tPAddr  MM_Clone(int bCloneUser);
+extern tVAddr  MM_NewKStack(void);
+extern tVAddr  MM_NewWorkerStack(Uint *InitialStack, size_t StackSize);
+
+#endif