WebSVN – HelenOS – Diff – /trunk/kernel/arch/sparc64/include/mm/page.h


/*
 * Copyright (c) 2005 Jakub Jermar
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - 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.
 * - 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.
 */
 
/** @addtogroup sparc64mm  
 * @{
 */
/** @file
 */
 
#ifndef KERN_sparc64_PAGE_H_
#define KERN_sparc64_PAGE_H_
 
#include <arch/mm/frame.h>
 
/*
 * On the TLB and TSB level, we still use 8K pages, which are supported by the
 * MMU.
 */
#define MMU_PAGE_WIDTH  MMU_FRAME_WIDTH
#define MMU_PAGE_SIZE   MMU_FRAME_SIZE
 
/*
 * On the page table level, we use 16K pages. 16K pages are not supported by
 * the MMU but we emulate them with pairs of 8K pages.
 */
#define PAGE_WIDTH  FRAME_WIDTH
#define PAGE_SIZE   FRAME_SIZE
 
#define MMU_PAGES_PER_PAGE  (1 << (PAGE_WIDTH - MMU_PAGE_WIDTH))
 
/*
 * With 16K pages, there is only one page color.
 */
#define PAGE_COLOR_BITS 0   /**< 14 - 14; 2^14 == 16K == alias boundary. */
 
#ifdef KERNEL
 
#ifndef __ASM__
 
#include <arch/interrupt.h>
 
extern uintptr_t physmem_base;
 
#define KA2PA(x)    (((uintptr_t) (x)) + physmem_base)
#define PA2KA(x)    (((uintptr_t) (x)) - physmem_base)
 
typedef union {
    uintptr_t address;
    struct {
        uint64_t vpn : 51;      /**< Virtual Page Number. */
        unsigned offset : 13;       /**< Offset. */
    } __attribute__ ((packed));
} page_address_t;
 
extern void page_arch_init(void);
 
#endif /* !def __ASM__ */
 
#endif /* KERNEL */
 
#endif
 
/** @}
 */
 

Rev 2105	Rev 2141
1	/*	1	/*
2	* Copyright (c) 2005 Jakub Jermar	2	* Copyright (c) 2005 Jakub Jermar
3	* All rights reserved.	3	* All rights reserved.
4	*	4	*
5	* Redistribution and use in source and binary forms, with or without	5	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions	6	* modification, are permitted provided that the following conditions
7	* are met:	7	* are met:
8	*	8	*
9	* - Redistributions of source code must retain the above copyright	9	* - Redistributions of source code must retain the above copyright
10	* notice, this list of conditions and the following disclaimer.	10	* notice, this list of conditions and the following disclaimer.
11	* - Redistributions in binary form must reproduce the above copyright	11	* - Redistributions in binary form must reproduce the above copyright
12	* notice, this list of conditions and the following disclaimer in the	12	* notice, this list of conditions and the following disclaimer in the
13	* documentation and/or other materials provided with the distribution.	13	* documentation and/or other materials provided with the distribution.
14	* - The name of the author may not be used to endorse or promote products	14	* - The name of the author may not be used to endorse or promote products
15	* derived from this software without specific prior written permission.	15	* derived from this software without specific prior written permission.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES	18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF	25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27	*/	27	*/
28		28
29	/** @addtogroup sparc64mm	29	/** @addtogroup sparc64mm
30	* @{	30	* @{
31	*/	31	*/
32	/** @file	32	/** @file
33	*/	33	*/
34		34
35	#ifndef KERN_sparc64_PAGE_H_	35	#ifndef KERN_sparc64_PAGE_H_
36	#define KERN_sparc64_PAGE_H_	36	#define KERN_sparc64_PAGE_H_
37		37
38	#include <arch/mm/frame.h>	38	#include <arch/mm/frame.h>
39		39
-		40	/*
-		41	* On the TLB and TSB level, we still use 8K pages, which are supported by the
-		42	* MMU.
-		43	*/
-		44	#define MMU_PAGE_WIDTH MMU_FRAME_WIDTH
-		45	#define MMU_PAGE_SIZE MMU_FRAME_SIZE
-		46
-		47	/*
-		48	* On the page table level, we use 16K pages. 16K pages are not supported by
-		49	* the MMU but we emulate them with pairs of 8K pages.
-		50	*/
40	#define PAGE_WIDTH FRAME_WIDTH	51	#define PAGE_WIDTH FRAME_WIDTH
41	#define PAGE_SIZE FRAME_SIZE	52	#define PAGE_SIZE FRAME_SIZE
42		53
-		54	#define MMU_PAGES_PER_PAGE (1 << (PAGE_WIDTH - MMU_PAGE_WIDTH))
-		55
-		56	/*
-		57	* With 16K pages, there is only one page color.
-		58	*/
43	#define PAGE_COLOR_BITS 1 /*< 14 - 13; 2^14 == 16K == alias boundary. /	59	#define PAGE_COLOR_BITS 0 /*< 14 - 14; 2^14 == 16K == alias boundary. /
44		60
45	#ifdef KERNEL	61	#ifdef KERNEL
46		62
47	#ifndef __ASM__	63	#ifndef __ASM__
48		64
49	#include <arch/interrupt.h>	65	#include <arch/interrupt.h>
50		66
51	extern uintptr_t physmem_base;	67	extern uintptr_t physmem_base;
52		68
53	#define KA2PA(x) (((uintptr_t) (x)) + physmem_base)	69	#define KA2PA(x) (((uintptr_t) (x)) + physmem_base)
54	#define PA2KA(x) (((uintptr_t) (x)) - physmem_base)	70	#define PA2KA(x) (((uintptr_t) (x)) - physmem_base)
55		71
56	typedef union {	72	typedef union {
57	uintptr_t address;	73	uintptr_t address;
58	struct {	74	struct {
59	uint64_t vpn : 51; /*< Virtual Page Number. /	75	uint64_t vpn : 51; /*< Virtual Page Number. /
60	unsigned offset : 13; /*< Offset. /	76	unsigned offset : 13; /*< Offset. /
61	} __attribute__ ((packed));	77	} __attribute__ ((packed));
62	} page_address_t;	78	} page_address_t;
63		79
64	extern void page_arch_init(void);	80	extern void page_arch_init(void);
65		81
66	#endif /* !def __ASM__ */	82	#endif /* !def __ASM__ */
67		83
68	#endif /* KERNEL */	84	#endif /* KERNEL */
69		85
70	#endif	86	#endif
71		87
72	/** @}	88	/** @}
73	*/	89	*/
74		90

Subversion Repositories HelenOS

(root)/trunk/kernel/arch/sparc64/include/mm/page.h – Rev 2105 → 2141