Code-base clean-up and refactoring (#47)

[lunaix-os.git] / lunaix-os / arch / x86 / includes / asm / variants / pt_def32.h

diff --git a/lunaix-os/arch/x86/includes/asm/variants/pt_def32.h b/lunaix-os/arch/x86/includes/asm/variants/pt_def32.h
new file mode 100644 (file)
index 0000000..b8d30d4
--- /dev/null
+++ b/lunaix-os/arch/x86/includes/asm/variants/pt_def32.h
@@ -0,0 +1,64 @@
+#ifdef CONFIG_ARCH_I386
+
+#ifndef __LUNAIX_PT_DEF32_H
+#define __LUNAIX_PT_DEF32_H
+
+#define _PTW_LEVEL          2
+
+#define _PAGE_BASE_SHIFT    12
+#define _PAGE_BASE_SIZE     ( 1UL << _PAGE_BASE_SHIFT )
+#define _PAGE_BASE_MASK     ( _PAGE_BASE_SIZE - 1)
+
+#define _PAGE_LEVEL_SHIFT   10
+#define _PAGE_LEVEL_SIZE    ( 1UL << _PAGE_LEVEL_SHIFT )
+#define _PAGE_LEVEL_MASK    ( _PAGE_LEVEL_SIZE - 1 )
+#define _PAGE_Ln_SIZE(n)    ( 1UL << (_PAGE_BASE_SHIFT + _PAGE_LEVEL_SHIFT * (_PTW_LEVEL - (n) - 1)) )
+
+// Note: we set VMS_SIZE = VMS_MASK as it is impossible
+//       to express 4Gi in 32bit unsigned integer
+
+#define VMS_BITS            32
+#define PMS_BITS            32
+
+#define VMS_SIZE            ( -1UL )
+#define VMS_MASK            ( -1UL )
+#define PMS_SIZE            ( -1UL )
+#define PMS_MASK            ( -1UL )
+
+/* General size of a LnT huge page */
+
+#define L0T_SIZE            _PAGE_Ln_SIZE(0)
+#define L1T_SIZE            _PAGE_Ln_SIZE(1)
+#define L2T_SIZE            _PAGE_Ln_SIZE(1)
+#define L3T_SIZE            _PAGE_Ln_SIZE(1)
+#define LFT_SIZE            _PAGE_Ln_SIZE(1)
+
+struct __pte {
+    unsigned int val;
+} align(4);
+
+#define _PTE_P                  (1 << 0)
+#define _PTE_W                  (1 << 1)
+#define _PTE_U                  (1 << 2)
+#define _PTE_WT                 (1 << 3)
+#define _PTE_CD                 (1 << 4)
+#define _PTE_A                  (1 << 5)
+#define _PTE_D                  (1 << 6)
+#define _PTE_PS                 (1 << 7)
+#define _PTE_PAT                (1 << 7)
+#define _PTE_G                  (1 << 8)
+#define _PTE_X                  (0)
+#define _PTE_NX                 (0)
+#define _PTE_R                  (0)
+
+#define __MEMGUARD               0xdeadc0deUL
+
+typedef unsigned int pte_attr_t;
+typedef unsigned int pfn_t;
+
+#define __index(va)             ( (va) & VMS_MASK )
+#define __vaddr(va)             ( va )
+#define __paddr(pa)             ( (pa) & PMS_MASK )
+
+#endif /* __LUNAIX_PT_DEF32_H */
+#endif