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Preparation for MTRR support, code is completely untested, though.

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The CPU specific MTRR code will be in modules.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@15520 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler
2005-12-12 17:04:36 +00:00
parent 381d6b57f6
commit 7c0a93573b
9 changed files with 294 additions and 17 deletions
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headers/private/kernel/arch/x86/arch_cpu.h
+15 -3
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@@ -9,13 +9,22 @@
#define _KERNEL_ARCH_x86_CPU_H
#include <SupportDefs.h>
#include <module.h>
#include <arch/x86/descriptors.h>
// MSR registers (possibly Intel specific)
#define IA32_MSR_APIC_BASE 0x1b
typedef struct x86_cpu_module_info {
module_info info;
uint32 (*count_mtrrs)(void);
status_t (*set_mtrr)(uint32 index, addr_t base, addr_t length, uint32 type);
status_t (*unset_mtrr)(uint32 index);
} x86_cpu_module_info;
struct tss {
uint16 prev_task;
uint16 unused0;
@@ -78,9 +87,12 @@ void i386_frstor(const void *fpu_state);
void i386_fxrstor(const void *fpu_state);
void i386_fsave_swap(void *old_fpu_state, const void *new_fpu_state);
void i386_fxsave_swap(void *old_fpu_state, const void *new_fpu_state);
uint64 x86_read_msr(uint32 register);
void x86_write_msr(uint32 register, uint64 value);
uint64 x86_read_msr(uint32 registerNumber);
void x86_write_msr(uint32 registerNumber, uint64 value);
void x86_set_task_gate(int32 n, int32 segment);
uint32 x86_count_mtrrs(void);
status_t x86_set_mtrr(uint32 index, addr_t base, addr_t length, uint32 type);
status_t x86_unset_mtrr(uint32 index);
struct tss *x86_get_main_tss(void);
#define read_ebp(value) \
headers/private/kernel/arch/x86/arch_vm_types.h
+17
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@@ -0,0 +1,17 @@
/*
* Copyright 2005, Axel Dörfler, axeld@pinc-software.de. All rights reserved.
* Distributed under the terms of the MIT License.
*/
#ifndef _KERNEL_ARCH_x86_VM_TYPES_H
#define _KERNEL_ARCH_x86_VM_TYPES_H
#include <SupportDefs.h>
struct arch_vm_memory_type {
uint16 type;
uint16 index;
};
#endif /* _KERNEL_ARCH_x86_VM_TYPES_H */