/* $Id: paging.h,v 1.11 2004/03/04 16:58:58 yui Exp $ */
/*
* Copyright (c) 2003 NONAKA Kimihiro
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef IA32_CPU_PAGING_H__
#define IA32_CPU_PAGING_H__
#ifdef __cplusplus
extern "C" {
#endif
/*
* ページ・ディレクトリ・エントリ (4K バイトページ使用時)
*
* 31 12 11 9 8 7 6 5 4 3 2 1 0
* +----------------------------------------+------+-+--+-+-+---+---+---+---+-+
* | ページ・テーブルのベース・アドレス |使用可|G|PS|-|A|PCD|PWT|U/S|R/W|P|
* +----------------------------------------+------+-+--+-+-+---+---+---+---+-+
* | | | | | | | | | |
* 9-11: システム・プログラマが使用可能 --------+ | | | | | | | | |
* 8: グローバル・ページ(無視される) ------------+ | | | | | | | |
* 7: ページ・サイズ (0 = 4k バイトページ) ---------+ | | | | | | |
* 6: 予約 (-) ---------------------------------------+ | | | | | |
* 5: アクセス -----------------------------------------+ | | | | |
* 4: キャッシュ無効 --------------------------------------+ | | | |
* 3: ライトスルー --------------------------------------------+ | | |
* 2: ユーザ／スーパバイザ (0 = スーパバイザ) ---------------------+ | |
* 1: 読み取り／書き込み (0 = 読み取りのみ) ---------------------------+ |
* 0: ページ存在 ---------------------------------------------------------+
*/
#define CPU_PDE_BASEADDR_MASK 0xfffff000
#define CPU_PDE_GLOBAL_PAGE (1 << 8)
#define CPU_PDE_PAGE_SIZE (1 << 7)
#define CPU_PDE_DIRTY (1 << 6)
#define CPU_PDE_ACCESS (1 << 5)
#define CPU_PDE_CACHE_DISABLE (1 << 4)
#define CPU_PDE_WRITE_THROUGH (1 << 3)
#define CPU_PDE_USER_MODE (1 << 2)
#define CPU_PDE_WRITABLE (1 << 1)
#define CPU_PDE_PRESENT (1 << 0)
/*
* ページ・ディレクトリ・エントリ (4M バイトページ使用時)
*
* 31 22 21 12 11 9 8 7 6 5 4 3 2 1 0
* +----------------------------+-----------+------+-+--+-+-+---+---+---+---+-+
* |ページテーブルの物理アドレス| 予約済み |使用可|G|PS|D|A|PCD|PWT|U/S|R/W|P|
* +----------------------------+-----------+------+-+--+-+-+---+---+---+---+-+
* | | | | | | | | | |
* 9-11: システム・プログラマが使用可能 --------+ | | | | | | | | |
* 8: グローバル・ページ ------------------------+ | | | | | | | |
* 7: ページ・サイズ (1 = 4M バイトページ) ---------+ | | | | | | |
* 6: ダーティ ---------------------------------------+ | | | | | |
* 5: アクセス -----------------------------------------+ | | | | |
* 4: キャッシュ無効 --------------------------------------+ | | | |
* 3: ライトスルー --------------------------------------------+ | | |
* 2: ユーザ／スーパバイザ (0 = スーパバイザ) ---------------------+ | |
* 1: 読み取り／書き込み (0 = 読み取りのみ) ---------------------------+ |
* 0: ページ存在 ---------------------------------------------------------+
*/
#define CPU_PDE_4M_BASEADDR_MASK 0xffc00000
#define CPU_PDE_4M_GLOBAL_PAGE (1 << 8)
#define CPU_PDE_4M_PAGE_SIZE (1 << 7)
#define CPU_PDE_4M_DIRTY (1 << 6)
#define CPU_PDE_4M_ACCESS (1 << 5)
#define CPU_PDE_4M_CACHE_DISABLE (1 << 4)
#define CPU_PDE_4M_WRITE_THROUGH (1 << 3)
#define CPU_PDE_4M_USER_MODE (1 << 2)
#define CPU_PDE_4M_WRITABLE (1 << 1)
#define CPU_PDE_4M_PRESENT (1 << 0)
/*
* ページ・テーブル・エントリ (4k バイト・ページ)
*
* 31 12 11 9 8 7 6 5 4 3 2 1 0
* +----------------------------------------+------+-+-+-+-+---+---+---+---+-+
* | ページのベース・アドレス |使用可|G|-|D|A|PCD|PWT|U/S|R/W|P|
* +----------------------------------------+------+-+-+-+-+---+---+---+---+-+
* | | | | | | | | | |
* 9-11: システム・プログラマが使用可能 -------+ | | | | | | | | |
* 8: グローバル・ページ -----------------------+ | | | | | | | |
* 7: 予約 (-) -----------------------------------+ | | | | | | |
* 6: ダーティ -------------------------------------+ | | | | | |
* 5: アクセス ---------------------------------------+ | | | | |
* 4: キャッシュ無効 ------------------------------------+ | | | |
* 3: ライトスルー ------------------------------------------+ | | |
* 2: ユーザ／スーパバイザ (0 = スーパバイザ) -------------------+ | |
* 1: 読み取り／書き込み (0 = 読み取りのみ) -------------------------+ |
* 0: ページ存在 -------------------------------------------------------+
*/
#define CPU_PTE_BASEADDR_MASK 0xfffff000
#define CPU_PTE_GLOBAL_PAGE (1 << 8)
#define CPU_PTE_PAGE_SIZE (1 << 7)
#define CPU_PTE_DIRTY (1 << 6)
#define CPU_PTE_ACCESS (1 << 5)
#define CPU_PTE_CACHE_DISABLE (1 << 4)
#define CPU_PTE_WRITE_THROUGH (1 << 3)
#define CPU_PTE_USER_MODE (1 << 2)
#define CPU_PTE_WRITABLE (1 << 1)
#define CPU_PTE_PRESENT (1 << 0)
/*
* linear address memory access function
*/
UINT32 MEMCALL cpu_linear_memory_read(UINT32 address, UINT length, int code, int user_mode);
void MEMCALL cpu_linear_memory_write(UINT32 address, UINT32 value, UINT length, int user_mode);
void MEMCALL paging_check(UINT32 laddr, UINT length, int crw, int user_mode);
/* crw */
#define CPU_PAGE_READ (0 << 0)
#define CPU_PAGE_WRITE (1 << 0)
#define CPU_PAGE_CODE (1 << 1)
#define CPU_PAGE_DATA (1 << 2)
#define CPU_PAGE_READ_CODE (CPU_PAGE_READ|CPU_PAGE_CODE)
#define CPU_PAGE_READ_DATA (CPU_PAGE_READ|CPU_PAGE_DATA)
#define CPU_PAGE_WRITE_DATA (CPU_PAGE_WRITE|CPU_PAGE_DATA)
#define cpu_lmemoryread(a,pl) \
(!CPU_STAT_PAGING) ? \
cpu_memoryread(a) : \
(UINT8)cpu_linear_memory_read(a,1,CPU_PAGE_READ_DATA,pl)
#define cpu_lmemoryread_w(a,pl) \
(!CPU_STAT_PAGING) ? \
cpu_memoryread_w(a) : \
(UINT16)cpu_linear_memory_read(a,2,CPU_PAGE_READ_DATA,pl)
#define cpu_lmemoryread_d(a,pl) \
(!CPU_STAT_PAGING) ? \
cpu_memoryread_d(a) : \
cpu_linear_memory_read(a,4,CPU_PAGE_READ_DATA,pl)
#define cpu_lmemorywrite(a,v,pl) \
(!CPU_STAT_PAGING) ? \
cpu_memorywrite(a,v) : \
cpu_linear_memory_write(a,v,1,pl)
#define cpu_lmemorywrite_w(a,v,pl) \
(!CPU_STAT_PAGING) ? \
cpu_memorywrite_w(a,v) : \
cpu_linear_memory_write(a,v,2,pl)
#define cpu_lmemorywrite_d(a,v,pl) \
(!CPU_STAT_PAGING) ? \
cpu_memorywrite_d(a,v) : \
cpu_linear_memory_write(a,v,4,pl)
/*
* code segment
*/
#define cpu_lcmemoryread(a) \
(!CPU_STAT_PAGING) ? \
cpu_memoryread(a) : \
(UINT8)cpu_linear_memory_read(a,1,CPU_PAGE_READ_CODE,CPU_STAT_USER_MODE)
#define cpu_lcmemoryread_w(a) \
(!CPU_STAT_PAGING) ? \
cpu_memoryread_w(a) : \
(UINT16)cpu_linear_memory_read(a,2,CPU_PAGE_READ_CODE,CPU_STAT_USER_MODE)
#define cpu_lcmemoryread_d(a) \
(!CPU_STAT_PAGING) ? \
cpu_memoryread_d(a) : \
cpu_linear_memory_read(a,4,CPU_PAGE_READ_CODE,CPU_STAT_USER_MODE)
/*
* linear address memory access with superviser mode
*/
#define cpu_kmemoryread(a) cpu_lmemoryread(a,CPU_MODE_SUPERVISER)
#define cpu_kmemoryread_w(a) cpu_lmemoryread_w(a,CPU_MODE_SUPERVISER)
#define cpu_kmemoryread_d(a) cpu_lmemoryread_d(a,CPU_MODE_SUPERVISER)
#define cpu_kmemorywrite(a,v) cpu_lmemorywrite(a,v,CPU_MODE_SUPERVISER)
#define cpu_kmemorywrite_w(a,v) cpu_lmemorywrite_w(a,v,CPU_MODE_SUPERVISER)
#define cpu_kmemorywrite_d(a,v) cpu_lmemorywrite_d(a,v,CPU_MODE_SUPERVISER)
/*
* CR3 (Page Directory Entry base physical address)
*/
#define set_CR3(cr3) \
do { \
VERBOSE(("set_CR3: old = %08x, new = 0x%08x", CPU_CR3, (cr3) & CPU_CR3_MASK)); \
CPU_CR3 = (cr3) & CPU_CR3_MASK; \
CPU_STAT_PDE_BASE = CPU_CR3 & CPU_CR3_PD_MASK; \
tlb_flush(FALSE); \
} while (/*CONSTCOND*/ 0)
/*
* TLB function
*/
#if defined(IA32_SUPPORT_TLB)
void tlb_init(void);
void tlb_flush(BOOL allflush);
void tlb_flush_page(UINT32 vaddr);
#else
#define tlb_init()
#define tlb_flush(allflush) (void)(allflush)
#define tlb_flush_page(vaddr) (void)(vaddr)
#endif
#ifdef __cplusplus
}
#endif
#endif /* !IA32_CPU_PAGING_H__ */
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