WebSVN – HelenOS – Diff – /trunk/kernel/arch/ppc32/include/mm/page.h


/*
 * Copyright (c) 2005 Martin Decky
 * 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 ppc32mm
 * @{
 */
/** @file
 */
 
#ifndef __ppc32_PAGE_H__
#define __ppc32_PAGE_H__
 
#include <arch/mm/frame.h>
 
#define PAGE_WIDTH  FRAME_WIDTH
#define PAGE_SIZE   FRAME_SIZE
 
#define PAGE_COLOR_BITS 0           /* dummy */
 
#ifdef KERNEL
 
#ifndef __ASM__
#   define KA2PA(x) (((uintptr_t) (x)) - 0x80000000)
#   define PA2KA(x) (((uintptr_t) (x)) + 0x80000000)
#else
#   define KA2PA(x) ((x) - 0x80000000)
#   define PA2KA(x) ((x) + 0x80000000)
#endif
 
/*
 * Implementation of generic 4-level page table interface,
 * the hardware Page Hash Table is used as cache.
 *
 * Page table layout:
 * - 32-bit virtual addressess
 * - Offset is 12 bits => pages are 4K long
 * - PTL0 has 1024 entries (10 bits)
 * - PTL1 is not used
 * - PTL2 is not used
 * - PLT3 has 1024 entries (10 bits)
 */
 
#define PTL0_ENTRIES_ARCH   1024
#define PTL1_ENTRIES_ARCH   0
#define PTL2_ENTRIES_ARCH   0
#define PTL3_ENTRIES_ARCH   1024
 
#define PTL0_SIZE_ARCH       ONE_FRAME
#define PTL1_SIZE_ARCH       0
#define PTL2_SIZE_ARCH       0
#define PTL3_SIZE_ARCH       ONE_FRAME
 
#define PTL0_INDEX_ARCH(vaddr)  (((vaddr) >> 22) & 0x3ff)
#define PTL1_INDEX_ARCH(vaddr)  0
#define PTL2_INDEX_ARCH(vaddr)  0
#define PTL3_INDEX_ARCH(vaddr)  (((vaddr) >> 12) & 0x3ff)
 
#define GET_PTL1_ADDRESS_ARCH(ptl0, i)      (((pte_t *) (ptl0))[(i)].pfn << 12)
#define GET_PTL2_ADDRESS_ARCH(ptl1, i)      (ptl1)
#define GET_PTL3_ADDRESS_ARCH(ptl2, i)      (ptl2)
#define GET_FRAME_ADDRESS_ARCH(ptl3, i)     (((pte_t *) (ptl3))[(i)].pfn << 12)
 
#define SET_PTL0_ADDRESS_ARCH(ptl0)
#define SET_PTL1_ADDRESS_ARCH(ptl0, i, a)   (((pte_t *) (ptl0))[(i)].pfn = (a) >> 12)
#define SET_PTL2_ADDRESS_ARCH(ptl1, i, a)
#define SET_PTL3_ADDRESS_ARCH(ptl2, i, a)
#define SET_FRAME_ADDRESS_ARCH(ptl3, i, a)  (((pte_t *) (ptl3))[(i)].pfn = (a) >> 12)
 
#define GET_PTL1_FLAGS_ARCH(ptl0, i)        get_pt_flags((pte_t *) (ptl0), (index_t) (i))
#define GET_PTL2_FLAGS_ARCH(ptl1, i)        PAGE_PRESENT
#define GET_PTL3_FLAGS_ARCH(ptl2, i)        PAGE_PRESENT
#define GET_FRAME_FLAGS_ARCH(ptl3, i)       get_pt_flags((pte_t *) (ptl3), (index_t) (i))
 
#define SET_PTL1_FLAGS_ARCH(ptl0, i, x)     set_pt_flags((pte_t *) (ptl0), (index_t) (i), (x))
#define SET_PTL2_FLAGS_ARCH(ptl1, i, x)
#define SET_PTL3_FLAGS_ARCH(ptl2, i, x)
#define SET_FRAME_FLAGS_ARCH(ptl3, i, x)    set_pt_flags((pte_t *) (ptl3), (index_t) (i), (x))
 
#define PTE_VALID_ARCH(pte)         (*((uint32_t *) (pte)) != 0)
#define PTE_PRESENT_ARCH(pte)           ((pte)->p != 0)
#define PTE_GET_FRAME_ARCH(pte)         ((pte)->pfn << 12)
#define PTE_WRITABLE_ARCH(pte)          1
#define PTE_EXECUTABLE_ARCH(pte)        1
 
#ifndef __ASM__
 
#include <mm/mm.h>
#include <arch/interrupt.h>
 
static inline int get_pt_flags(pte_t *pt, index_t i)
{
    pte_t *p = &pt[i];
   
    return (
        (1 << PAGE_CACHEABLE_SHIFT) |
        ((!p->p) << PAGE_PRESENT_SHIFT) |
        (1 << PAGE_USER_SHIFT) |
        (1 << PAGE_READ_SHIFT) |
        (1 << PAGE_WRITE_SHIFT) |
        (1 << PAGE_EXEC_SHIFT) |
        (p->g << PAGE_GLOBAL_SHIFT)
    );
}
 
static inline void set_pt_flags(pte_t *pt, index_t i, int flags)
{
    pte_t *p = &pt[i];
   
    p->p = !(flags & PAGE_NOT_PRESENT);
    p->g = (flags & PAGE_GLOBAL) != 0;
    p->valid = 1;
}
 
extern void page_arch_init(void);
 
#endif /* __ASM__ */
 
#endif /* KERNEL */
 
#endif
 
/** @}
 */
 

Subversion Repositories HelenOS

(root)/trunk/kernel/arch/ppc32/include/mm/page.h – Rev 2089 → 2465

Rev 2089		Rev 2465
1	/*	1	/*
2	* Copyright (c) 2005 Martin Decky	2	* Copyright (c) 2005 Martin Decky
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 ppc32mm	29	/** @addtogroup ppc32mm
30	* @{	30	* @{
31	*/	31	*/
32	/** @file	32	/** @file
33	*/	33	*/
34		34
35	#ifndef __ppc32_PAGE_H__	35	#ifndef __ppc32_PAGE_H__
36	#define __ppc32_PAGE_H__	36	#define __ppc32_PAGE_H__
37		37
38	#include <arch/mm/frame.h>	38	#include <arch/mm/frame.h>
39		39
40	#define PAGE_WIDTH FRAME_WIDTH	40	#define PAGE_WIDTH FRAME_WIDTH
41	#define PAGE_SIZE FRAME_SIZE	41	#define PAGE_SIZE FRAME_SIZE
42		42
43	#define PAGE_COLOR_BITS 0 /* dummy */	43	#define PAGE_COLOR_BITS 0 /* dummy */
44		44
45	#ifdef KERNEL	45	#ifdef KERNEL
46		46
47	#ifndef __ASM__	47	#ifndef __ASM__
48	# define KA2PA(x) (((uintptr_t) (x)) - 0x80000000)	48	# define KA2PA(x) (((uintptr_t) (x)) - 0x80000000)
49	# define PA2KA(x) (((uintptr_t) (x)) + 0x80000000)	49	# define PA2KA(x) (((uintptr_t) (x)) + 0x80000000)
50	#else	50	#else
51	# define KA2PA(x) ((x) - 0x80000000)	51	# define KA2PA(x) ((x) - 0x80000000)
52	# define PA2KA(x) ((x) + 0x80000000)	52	# define PA2KA(x) ((x) + 0x80000000)
53	#endif	53	#endif
54		54
55	/*	55	/*
56	* Implementation of generic 4-level page table interface,	56	* Implementation of generic 4-level page table interface,
57	* the hardware Page Hash Table is used as cache.	57	* the hardware Page Hash Table is used as cache.
58	*	58	*
59	* Page table layout:	59	* Page table layout:
60	* - 32-bit virtual addressess	60	* - 32-bit virtual addressess
61	* - Offset is 12 bits => pages are 4K long	61	* - Offset is 12 bits => pages are 4K long
62	* - PTL0 has 1024 entries (10 bits)	62	* - PTL0 has 1024 entries (10 bits)
63	* - PTL1 is not used	63	* - PTL1 is not used
64	* - PTL2 is not used	64	* - PTL2 is not used
65	* - PLT3 has 1024 entries (10 bits)	65	* - PLT3 has 1024 entries (10 bits)
66	*/	66	*/
67		67
68	#define PTL0_ENTRIES_ARCH 1024	68	#define PTL0_ENTRIES_ARCH 1024
69	#define PTL1_ENTRIES_ARCH 0	69	#define PTL1_ENTRIES_ARCH 0
70	#define PTL2_ENTRIES_ARCH 0	70	#define PTL2_ENTRIES_ARCH 0
71	#define PTL3_ENTRIES_ARCH 1024	71	#define PTL3_ENTRIES_ARCH 1024
72		72
-		73	#define PTL0_SIZE_ARCH ONE_FRAME
-		74	#define PTL1_SIZE_ARCH 0
-		75	#define PTL2_SIZE_ARCH 0
-		76	#define PTL3_SIZE_ARCH ONE_FRAME
-		77
73	#define PTL0_INDEX_ARCH(vaddr) (((vaddr) >> 22) & 0x3ff)	78	#define PTL0_INDEX_ARCH(vaddr) (((vaddr) >> 22) & 0x3ff)
74	#define PTL1_INDEX_ARCH(vaddr) 0	79	#define PTL1_INDEX_ARCH(vaddr) 0
75	#define PTL2_INDEX_ARCH(vaddr) 0	80	#define PTL2_INDEX_ARCH(vaddr) 0
76	#define PTL3_INDEX_ARCH(vaddr) (((vaddr) >> 12) & 0x3ff)	81	#define PTL3_INDEX_ARCH(vaddr) (((vaddr) >> 12) & 0x3ff)
77		82
78	#define GET_PTL1_ADDRESS_ARCH(ptl0, i) (((pte_t *) (ptl0))[(i)].pfn << 12)	83	#define GET_PTL1_ADDRESS_ARCH(ptl0, i) (((pte_t *) (ptl0))[(i)].pfn << 12)
79	#define GET_PTL2_ADDRESS_ARCH(ptl1, i) (ptl1)	84	#define GET_PTL2_ADDRESS_ARCH(ptl1, i) (ptl1)
80	#define GET_PTL3_ADDRESS_ARCH(ptl2, i) (ptl2)	85	#define GET_PTL3_ADDRESS_ARCH(ptl2, i) (ptl2)
81	#define GET_FRAME_ADDRESS_ARCH(ptl3, i) (((pte_t *) (ptl3))[(i)].pfn << 12)	86	#define GET_FRAME_ADDRESS_ARCH(ptl3, i) (((pte_t *) (ptl3))[(i)].pfn << 12)
82		87
83	#define SET_PTL0_ADDRESS_ARCH(ptl0)	88	#define SET_PTL0_ADDRESS_ARCH(ptl0)
84	#define SET_PTL1_ADDRESS_ARCH(ptl0, i, a) (((pte_t *) (ptl0))[(i)].pfn = (a) >> 12)	89	#define SET_PTL1_ADDRESS_ARCH(ptl0, i, a) (((pte_t *) (ptl0))[(i)].pfn = (a) >> 12)
85	#define SET_PTL2_ADDRESS_ARCH(ptl1, i, a)	90	#define SET_PTL2_ADDRESS_ARCH(ptl1, i, a)
86	#define SET_PTL3_ADDRESS_ARCH(ptl2, i, a)	91	#define SET_PTL3_ADDRESS_ARCH(ptl2, i, a)
87	#define SET_FRAME_ADDRESS_ARCH(ptl3, i, a) (((pte_t *) (ptl3))[(i)].pfn = (a) >> 12)	92	#define SET_FRAME_ADDRESS_ARCH(ptl3, i, a) (((pte_t *) (ptl3))[(i)].pfn = (a) >> 12)
88		93
89	#define GET_PTL1_FLAGS_ARCH(ptl0, i) get_pt_flags((pte_t *) (ptl0), (index_t) (i))	94	#define GET_PTL1_FLAGS_ARCH(ptl0, i) get_pt_flags((pte_t *) (ptl0), (index_t) (i))
90	#define GET_PTL2_FLAGS_ARCH(ptl1, i) PAGE_PRESENT	95	#define GET_PTL2_FLAGS_ARCH(ptl1, i) PAGE_PRESENT
91	#define GET_PTL3_FLAGS_ARCH(ptl2, i) PAGE_PRESENT	96	#define GET_PTL3_FLAGS_ARCH(ptl2, i) PAGE_PRESENT
92	#define GET_FRAME_FLAGS_ARCH(ptl3, i) get_pt_flags((pte_t *) (ptl3), (index_t) (i))	97	#define GET_FRAME_FLAGS_ARCH(ptl3, i) get_pt_flags((pte_t *) (ptl3), (index_t) (i))
93		98
94	#define SET_PTL1_FLAGS_ARCH(ptl0, i, x) set_pt_flags((pte_t *) (ptl0), (index_t) (i), (x))	99	#define SET_PTL1_FLAGS_ARCH(ptl0, i, x) set_pt_flags((pte_t *) (ptl0), (index_t) (i), (x))
95	#define SET_PTL2_FLAGS_ARCH(ptl1, i, x)	100	#define SET_PTL2_FLAGS_ARCH(ptl1, i, x)
96	#define SET_PTL3_FLAGS_ARCH(ptl2, i, x)	101	#define SET_PTL3_FLAGS_ARCH(ptl2, i, x)
97	#define SET_FRAME_FLAGS_ARCH(ptl3, i, x) set_pt_flags((pte_t *) (ptl3), (index_t) (i), (x))	102	#define SET_FRAME_FLAGS_ARCH(ptl3, i, x) set_pt_flags((pte_t *) (ptl3), (index_t) (i), (x))
98		103
99	#define PTE_VALID_ARCH(pte) (((uint32_t ) (pte)) != 0)	104	#define PTE_VALID_ARCH(pte) (((uint32_t ) (pte)) != 0)
100	#define PTE_PRESENT_ARCH(pte) ((pte)->p != 0)	105	#define PTE_PRESENT_ARCH(pte) ((pte)->p != 0)
101	#define PTE_GET_FRAME_ARCH(pte) ((pte)->pfn << 12)	106	#define PTE_GET_FRAME_ARCH(pte) ((pte)->pfn << 12)
102	#define PTE_WRITABLE_ARCH(pte) 1	107	#define PTE_WRITABLE_ARCH(pte) 1
103	#define PTE_EXECUTABLE_ARCH(pte) 1	108	#define PTE_EXECUTABLE_ARCH(pte) 1
104		109
105	#ifndef __ASM__	110	#ifndef __ASM__
106		111
107	#include <mm/mm.h>	112	#include <mm/mm.h>
108	#include <arch/interrupt.h>	113	#include <arch/interrupt.h>
109		114
110	static inline int get_pt_flags(pte_t *pt, index_t i)	115	static inline int get_pt_flags(pte_t *pt, index_t i)
111	{	116	{
112	pte_t *p = &pt[i];	117	pte_t *p = &pt[i];
113		118
114	return (	119	return (
115	(1 << PAGE_CACHEABLE_SHIFT) \|	120	(1 << PAGE_CACHEABLE_SHIFT) \|
116	((!p->p) << PAGE_PRESENT_SHIFT) \|	121	((!p->p) << PAGE_PRESENT_SHIFT) \|
117	(1 << PAGE_USER_SHIFT) \|	122	(1 << PAGE_USER_SHIFT) \|
118	(1 << PAGE_READ_SHIFT) \|	123	(1 << PAGE_READ_SHIFT) \|
119	(1 << PAGE_WRITE_SHIFT) \|	124	(1 << PAGE_WRITE_SHIFT) \|
120	(1 << PAGE_EXEC_SHIFT) \|	125	(1 << PAGE_EXEC_SHIFT) \|
121	(p->g << PAGE_GLOBAL_SHIFT)	126	(p->g << PAGE_GLOBAL_SHIFT)
122	);	127	);
123	}	128	}
124		129
125	static inline void set_pt_flags(pte_t *pt, index_t i, int flags)	130	static inline void set_pt_flags(pte_t *pt, index_t i, int flags)
126	{	131	{
127	pte_t *p = &pt[i];	132	pte_t *p = &pt[i];
128		133
129	p->p = !(flags & PAGE_NOT_PRESENT);	134	p->p = !(flags & PAGE_NOT_PRESENT);
130	p->g = (flags & PAGE_GLOBAL) != 0;	135	p->g = (flags & PAGE_GLOBAL) != 0;
131	p->valid = 1;	136	p->valid = 1;
132	}	137	}
133		138
134	extern void page_arch_init(void);	139	extern void page_arch_init(void);
135		140
136	#endif /* __ASM__ */	141	#endif /* __ASM__ */
137		142
138	#endif /* KERNEL */	143	#endif /* KERNEL */
139		144
140	#endif	145	#endif
141		146
142	/** @}	147	/** @}
143	*/	148	*/
144		149