WebSVN – HelenOS-historic – Diff – /kernel/trunk/arch/ppc32/src/mm/page.c


/*
 * 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.
 */
 
#include <arch/mm/page.h>
#include <genarch/mm/page_pt.h>
#include <arch/mm/frame.h>
#include <arch/asm.h>
#include <mm/frame.h>
#include <mm/page.h>
#include <mm/as.h>
#include <arch.h>
#include <arch/types.h>
#include <arch/exception.h>
#include <config.h>
#include <print.h>
#include <symtab.h>
 
static phte_t *phte;
 
 
/** Try to find PTE for faulting address
 *
 * Try to find PTE for faulting address.
 * The AS->lock must be held on entry to this function.
 *
 * @param badvaddr Faulting virtual address.
 * @param istate   Pointer to interrupted state.
 * @param pfrc     Pointer to variable where as_page_fault() return code will be stored.
 * @return         PTE on success, NULL otherwise.
 *
 */
static pte_t *find_mapping_and_check(__address badvaddr, istate_t *istate, int *pfcr)
{
    /*
     * Check if the mapping exists in page tables.
     */
    pte_t *pte = page_mapping_find(AS, badvaddr);
    if ((pte) && (pte->p)) {
        /*
         * Mapping found in page tables.
         * Immediately succeed.
         */
        return pte;
    } else {
        int rc;
   
        /*
         * Mapping not found in page tables.
         * Resort to higher-level page fault handler.
         */
        page_table_unlock(AS, true);
        switch (rc = as_page_fault(badvaddr, istate)) {
            case AS_PF_OK:
                /*
                 * The higher-level page fault handler succeeded,
                 * The mapping ought to be in place.
                 */
                page_table_lock(AS, true);
                pte = page_mapping_find(AS, badvaddr);
                ASSERT((pte) && (pte->p));
                return pte;
            case AS_PF_DEFER:
                page_table_lock(AS, true);
                *pfcr = rc;
                return NULL;
            case AS_PF_FAULT:
                page_table_lock(AS, true);
                printf("Page fault.\n");
                *pfcr = rc;
                return NULL;
            default:
                panic("unexpected rc (%d)\n", rc);
        }  
    }
}
 
 
static void pht_refill_fail(__address badvaddr, istate_t *istate)
{
    char *symbol = "";
    char *sym2 = "";
 
    char *s = get_symtab_entry(istate->pc);
    if (s)
        symbol = s;
    s = get_symtab_entry(istate->lr);
    if (s)
        sym2 = s;
    panic("%p: PHT Refill Exception at %p (%s<-%s)\n", badvaddr, istate->pc, symbol, sym2);
}
 
 
static void pht_insert(const __address vaddr, const pfn_t pfn)
{
    __u32 page = (vaddr >> 12) & 0xffff;
    __u32 api = (vaddr >> 22) & 0x3f;
    __u32 vsid;
   
    asm volatile (
        "mfsrin %0, %1\n"
        : "=r" (vsid)
        : "r" (vaddr)
    );
   
    /* Primary hash (xor) */
    __u32 hash = ((vsid ^ page) & 0x3ff) << 3;
   
    __u32 i;
    bool found = false;
    /* Find unused PTE in PTEG */
    for (i = 0; i < 8; i++) {
        if (!phte[hash + i].v) {
            found = true;
            break;
        }
    }
   
    if (!found) {
        /* Secondary hash (not) */
        hash = ~hash;
       
        /* Find unused PTE in PTEG */
        for (i = 0; i < 8; i++) {
            if (!phte[hash + i].v) {
                found = true;
                break;
            }
        }
       
        if (!found) {
            // TODO: A/C precedence groups
            i = page % 8;
        }
    }
   
    phte[hash + i].v = 1;
    phte[hash + i].vsid = vsid;
    phte[hash + i].h = 0;
    phte[hash + i].api = api;
    phte[hash + i].rpn = pfn;
    phte[hash + i].r = 0;
    phte[hash + i].c = 0;
    phte[hash + i].pp = 2; // FIXME
}
 
 
/** Process Instruction/Data Storage Interrupt
 *
 * @param data   True if Data Storage Interrupt.
 * @param istate Interrupted register context.
 *
 */
void pht_refill(bool data, istate_t *istate)
{
    asid_t asid;
    __address badvaddr;
    pte_t *pte;
   
    int pfcr;
   
    if (data) {
        asm volatile (
            "mfdar %0\n"
            : "=r" (badvaddr)
        );
    } else
        badvaddr = istate->pc;
       
    spinlock_lock(&AS->lock);
    asid = AS->asid;
    spinlock_unlock(&AS->lock);
   
    page_table_lock(AS, true);
   
    pte = find_mapping_and_check(badvaddr, istate, &pfcr);
    if (!pte) {
        switch (pfcr) {
            case AS_PF_FAULT:
                goto fail;
                break;
            case AS_PF_DEFER:
                /*
                 * The page fault came during copy_from_uspace()
                 * or copy_to_uspace().
                 */
                page_table_unlock(AS, true);
                return;
            default:
                panic("Unexpected pfrc (%d)\n", pfcr);
 
        }
    }
   
    pte->a = 1; /* Record access to PTE */
    pht_insert(badvaddr, pte->pfn);
   
    page_table_unlock(AS, true);
    return;
   
fail:
    page_table_unlock(AS, true);
    pht_refill_fail(badvaddr, istate);
}
 
 
void pht_init(void)
{
    memsetb((__address) phte, 1 << PHT_BITS, 0);
 
 
 
 
 
 
 
 
 
}
 
 
void page_arch_init(void)
{
    if (config.cpu_active == 1) {
        page_mapping_operations = &pt_mapping_operations;
       
        /*
         * PA2KA(identity) mapping for all frames until last_frame.
         */
        __address cur;
        int flags;
       
        for (cur = 0; cur < last_frame; cur += FRAME_SIZE) {
            flags = PAGE_CACHEABLE;
            if ((PA2KA(cur) >= config.base) && (PA2KA(cur) < config.base + config.kernel_size))
                flags |= PAGE_GLOBAL;
            page_mapping_insert(AS_KERNEL, PA2KA(cur), cur, flags);
        }
       
        /* Allocate page hash table */
        phte_t *physical_phte = (phte_t *) PFN2ADDR(frame_alloc(PHT_ORDER, FRAME_KA | FRAME_PANIC));
        phte = (phte_t *) PA2KA((__address) physical_phte);
       
        ASSERT((__address) physical_phte % (1 << PHT_BITS) == 0);
        pht_init();
       
        asm volatile (
            "mtsdr1 %0\n"
            :
            : "r" ((__address) physical_phte)
        );
 
 
 
 
    }
}
 

Rev 1374	Rev 1378
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	#include <arch/mm/page.h>	29	#include <arch/mm/page.h>
30	#include <genarch/mm/page_pt.h>	30	#include <genarch/mm/page_pt.h>
31	#include <arch/mm/frame.h>	31	#include <arch/mm/frame.h>
32	#include <arch/asm.h>	32	#include <arch/asm.h>
33	#include <mm/frame.h>	33	#include <mm/frame.h>
34	#include <mm/page.h>	34	#include <mm/page.h>
35	#include <mm/as.h>	35	#include <mm/as.h>
36	#include <arch.h>	36	#include <arch.h>
37	#include <arch/types.h>	37	#include <arch/types.h>
38	#include <arch/exception.h>	38	#include <arch/exception.h>
39	#include <config.h>	39	#include <config.h>
40	#include <print.h>	40	#include <print.h>
41	#include <symtab.h>	41	#include <symtab.h>
42		42
43	static phte_t *phte;	43	static phte_t *phte;
44		44
45		45
46	/** Try to find PTE for faulting address	46	/** Try to find PTE for faulting address
47	*	47	*
48	* Try to find PTE for faulting address.	48	* Try to find PTE for faulting address.
49	* The AS->lock must be held on entry to this function.	49	* The AS->lock must be held on entry to this function.
50	*	50	*
51	* @param badvaddr Faulting virtual address.	51	* @param badvaddr Faulting virtual address.
52	* @param istate Pointer to interrupted state.	52	* @param istate Pointer to interrupted state.
53	* @param pfrc Pointer to variable where as_page_fault() return code will be stored.	53	* @param pfrc Pointer to variable where as_page_fault() return code will be stored.
54	* @return PTE on success, NULL otherwise.	54	* @return PTE on success, NULL otherwise.
55	*	55	*
56	*/	56	*/
57	static pte_t find_mapping_and_check(__address badvaddr, istate_t istate, int *pfcr)	57	static pte_t find_mapping_and_check(__address badvaddr, istate_t istate, int *pfcr)
58	{	58	{
59	/*	59	/*
60	* Check if the mapping exists in page tables.	60	* Check if the mapping exists in page tables.
61	*/	61	*/
62	pte_t *pte = page_mapping_find(AS, badvaddr);	62	pte_t *pte = page_mapping_find(AS, badvaddr);
63	if ((pte) && (pte->p)) {	63	if ((pte) && (pte->p)) {
64	/*	64	/*
65	* Mapping found in page tables.	65	* Mapping found in page tables.
66	* Immediately succeed.	66	* Immediately succeed.
67	*/	67	*/
68	return pte;	68	return pte;
69	} else {	69	} else {
70	int rc;	70	int rc;
71		71
72	/*	72	/*
73	* Mapping not found in page tables.	73	* Mapping not found in page tables.
74	* Resort to higher-level page fault handler.	74	* Resort to higher-level page fault handler.
75	*/	75	*/
76	page_table_unlock(AS, true);	76	page_table_unlock(AS, true);
77	switch (rc = as_page_fault(badvaddr, istate)) {	77	switch (rc = as_page_fault(badvaddr, istate)) {
78	case AS_PF_OK:	78	case AS_PF_OK:
79	/*	79	/*
80	* The higher-level page fault handler succeeded,	80	* The higher-level page fault handler succeeded,
81	* The mapping ought to be in place.	81	* The mapping ought to be in place.
82	*/	82	*/
83	page_table_lock(AS, true);	83	page_table_lock(AS, true);
84	pte = page_mapping_find(AS, badvaddr);	84	pte = page_mapping_find(AS, badvaddr);
85	ASSERT((pte) && (pte->p));	85	ASSERT((pte) && (pte->p));
86	return pte;	86	return pte;
87	case AS_PF_DEFER:	87	case AS_PF_DEFER:
88	page_table_lock(AS, true);	88	page_table_lock(AS, true);
89	*pfcr = rc;	89	*pfcr = rc;
90	return NULL;	90	return NULL;
91	case AS_PF_FAULT:	91	case AS_PF_FAULT:
92	page_table_lock(AS, true);	92	page_table_lock(AS, true);
93	printf("Page fault.\n");	93	printf("Page fault.\n");
94	*pfcr = rc;	94	*pfcr = rc;
95	return NULL;	95	return NULL;
96	default:	96	default:
97	panic("unexpected rc (%d)\n", rc);	97	panic("unexpected rc (%d)\n", rc);
98	}	98	}
99	}	99	}
100	}	100	}
101		101
102		102
103	static void pht_refill_fail(__address badvaddr, istate_t *istate)	103	static void pht_refill_fail(__address badvaddr, istate_t *istate)
104	{	104	{
105	char *symbol = "";	105	char *symbol = "";
106	char *sym2 = "";	106	char *sym2 = "";
107		107
108	char *s = get_symtab_entry(istate->pc);	108	char *s = get_symtab_entry(istate->pc);
109	if (s)	109	if (s)
110	symbol = s;	110	symbol = s;
111	s = get_symtab_entry(istate->lr);	111	s = get_symtab_entry(istate->lr);
112	if (s)	112	if (s)
113	sym2 = s;	113	sym2 = s;
114	panic("%p: PHT Refill Exception at %p (%s<-%s)\n", badvaddr, istate->pc, symbol, sym2);	114	panic("%p: PHT Refill Exception at %p (%s<-%s)\n", badvaddr, istate->pc, symbol, sym2);
115	}	115	}
116		116
-		117
117	static void pht_insert(const __address vaddr, const pfn_t pfn)	118	static void pht_insert(const __address vaddr, const pfn_t pfn)
118	{	119	{
119	__u32 page = (vaddr >> 12) & 0xffff;	120	__u32 page = (vaddr >> 12) & 0xffff;
120	__u32 api = (vaddr >> 22) & 0x3f;	121	__u32 api = (vaddr >> 22) & 0x3f;
121	__u32 vsid;	122	__u32 vsid;
122		123
123	asm volatile (	124	asm volatile (
124	"mfsrin %0, %1\n"	125	"mfsrin %0, %1\n"
125	: "=r" (vsid)	126	: "=r" (vsid)
126	: "r" (vaddr)	127	: "r" (vaddr)
127	);	128	);
128		129
129	/* Primary hash (xor) */	130	/* Primary hash (xor) */
130	__u32 hash = ((vsid ^ page) & 0x3ff) << 3;	131	__u32 hash = ((vsid ^ page) & 0x3ff) << 3;
131		132
132	__u32 i;	133	__u32 i;
-		134	bool found = false;
133	/* Find unused PTE in PTEG */	135	/* Find unused PTE in PTEG */
134	for (i = 0; i < 8; i++) {	136	for (i = 0; i < 8; i++) {
135	if (!phte[hash + i].v)	137	if (!phte[hash + i].v) {
-		138	found = true;
136	break;	139	break;
-		140	}
137	}	141	}
138		142
-		143	if (!found) {
139	// TODO: Check access/change bits, secondary hash	144	/* Secondary hash (not) */
-		145	hash = ~hash;
-		146
-		147	/* Find unused PTE in PTEG */
-		148	for (i = 0; i < 8; i++) {
-		149	if (!phte[hash + i].v) {
-		150	found = true;
-		151	break;
-		152	}
-		153	}
140		154
141	if (i == 8)	155	if (!found) {
-		156	// TODO: A/C precedence groups
142	i = page % 8;	157	i = page % 8;
-		158	}
-		159	}
143		160
144	phte[hash + i].v = 1;	161	phte[hash + i].v = 1;
145	phte[hash + i].vsid = vsid;	162	phte[hash + i].vsid = vsid;
146	phte[hash + i].h = 0;	163	phte[hash + i].h = 0;
147	phte[hash + i].api = api;	164	phte[hash + i].api = api;
148	phte[hash + i].rpn = pfn;	165	phte[hash + i].rpn = pfn;
149	phte[hash + i].r = 0;	166	phte[hash + i].r = 0;
150	phte[hash + i].c = 0;	167	phte[hash + i].c = 0;
151	phte[hash + i].pp = 2; // FIXME	168	phte[hash + i].pp = 2; // FIXME
152	}	169	}
153		170
154		171
155	/** Process Instruction/Data Storage Interrupt	172	/** Process Instruction/Data Storage Interrupt
156	*	173	*
157	* @param data True if Data Storage Interrupt.	174	* @param data True if Data Storage Interrupt.
158	* @param istate Interrupted register context.	175	* @param istate Interrupted register context.
159	*	176	*
160	*/	177	*/
161	void pht_refill(bool data, istate_t *istate)	178	void pht_refill(bool data, istate_t *istate)
162	{	179	{
163	asid_t asid;	180	asid_t asid;
164	__address badvaddr;	181	__address badvaddr;
165	pte_t *pte;	182	pte_t *pte;
166		183
167	int pfcr;	184	int pfcr;
168		185
169	if (data) {	186	if (data) {
170	asm volatile (	187	asm volatile (
171	"mfdar %0\n"	188	"mfdar %0\n"
172	: "=r" (badvaddr)	189	: "=r" (badvaddr)
173	);	190	);
174	} else	191	} else
175	badvaddr = istate->pc;	192	badvaddr = istate->pc;
176		193
177	spinlock_lock(&AS->lock);	194	spinlock_lock(&AS->lock);
178	asid = AS->asid;	195	asid = AS->asid;
179	spinlock_unlock(&AS->lock);	196	spinlock_unlock(&AS->lock);
180		197
181	page_table_lock(AS, true);	198	page_table_lock(AS, true);
182		199
183	pte = find_mapping_and_check(badvaddr, istate, &pfcr);	200	pte = find_mapping_and_check(badvaddr, istate, &pfcr);
184	if (!pte) {	201	if (!pte) {
185	switch (pfcr) {	202	switch (pfcr) {
186	case AS_PF_FAULT:	203	case AS_PF_FAULT:
187	goto fail;	204	goto fail;
188	break;	205	break;
189	case AS_PF_DEFER:	206	case AS_PF_DEFER:
190	/*	207	/*
191	* The page fault came during copy_from_uspace()	208	* The page fault came during copy_from_uspace()
192	* or copy_to_uspace().	209	* or copy_to_uspace().
193	*/	210	*/
194	page_table_unlock(AS, true);	211	page_table_unlock(AS, true);
195	return;	212	return;
196	default:	213	default:
197	panic("Unexpected pfrc (%d)\n", pfcr);	214	panic("Unexpected pfrc (%d)\n", pfcr);
198	break;	-
199	}	215	}
200	}	216	}
201		217
202	pte->a = 1; /* Record access to PTE */	218	pte->a = 1; /* Record access to PTE */
203	pht_insert(badvaddr, pte->pfn);	219	pht_insert(badvaddr, pte->pfn);
204		220
205	page_table_unlock(AS, true);	221	page_table_unlock(AS, true);
206	return;	222	return;
207		223
208	fail:	224	fail:
209	page_table_unlock(AS, true);	225	page_table_unlock(AS, true);
210	pht_refill_fail(badvaddr, istate);	226	pht_refill_fail(badvaddr, istate);
211	}	227	}
212		228
213		229
214	void pht_init(void)	230	void pht_init(void)
215	{	231	{
216	memsetb((__address) phte, 1 << PHT_BITS, 0);	232	memsetb((__address) phte, 1 << PHT_BITS, 0);
217		-
218	/* Insert global kernel mapping */	-
219		-
220	__address cur;	-
221	for (cur = 0; cur < last_frame; cur += FRAME_SIZE) {	-
222	pte_t *pte = page_mapping_find(AS_KERNEL, PA2KA(cur));	-
223	if ((pte) && (pte->p) && (pte->g))	-
224	pht_insert(PA2KA(cur), pte->pfn);	-
225	}	-
226	}	233	}
227		234
228		235
229	void page_arch_init(void)	236	void page_arch_init(void)
230	{	237	{
231	if (config.cpu_active == 1) {	238	if (config.cpu_active == 1) {
232	page_mapping_operations = &pt_mapping_operations;	239	page_mapping_operations = &pt_mapping_operations;
233		240
234	/*	241	/*
235	* PA2KA(identity) mapping for all frames until last_frame.	242	* PA2KA(identity) mapping for all frames until last_frame.
236	*/	243	*/
237	__address cur;	244	__address cur;
238	int flags;	245	int flags;
239		246
240	for (cur = 0; cur < last_frame; cur += FRAME_SIZE) {	247	for (cur = 0; cur < last_frame; cur += FRAME_SIZE) {
241	flags = PAGE_CACHEABLE;	248	flags = PAGE_CACHEABLE;
242	if ((PA2KA(cur) >= config.base) && (PA2KA(cur) < config.base + config.kernel_size))	249	if ((PA2KA(cur) >= config.base) && (PA2KA(cur) < config.base + config.kernel_size))
243	flags \|= PAGE_GLOBAL;	250	flags \|= PAGE_GLOBAL;
244	page_mapping_insert(AS_KERNEL, PA2KA(cur), cur, flags);	251	page_mapping_insert(AS_KERNEL, PA2KA(cur), cur, flags);
245	}	252	}
246		253
247	/* Allocate page hash table */	254	/* Allocate page hash table */
248	phte_t physical_phte = (phte_t ) PFN2ADDR(frame_alloc(PHT_ORDER, FRAME_KA \| FRAME_PANIC));	255	phte_t physical_phte = (phte_t ) PFN2ADDR(frame_alloc(PHT_ORDER, FRAME_KA \| FRAME_PANIC));
249	phte = (phte_t *) PA2KA((__address) physical_phte);	256	phte = (phte_t *) PA2KA((__address) physical_phte);
250		257
251	ASSERT((__address) physical_phte % (1 << PHT_BITS) == 0);	258	ASSERT((__address) physical_phte % (1 << PHT_BITS) == 0);
252	pht_init();	259	pht_init();
253		260
254	asm volatile (	261	asm volatile (
255	"mtsdr1 %0\n"	262	"mtsdr1 %0\n"
256	:	263	:
257	: "r" ((__address) physical_phte)	264	: "r" ((__address) physical_phte)
258	);	265	);
259		-
260	/* Invalidate block address translation registers,	-
261	thus remove the temporary mapping */	-
262	// invalidate_bat();	-
263	}	266	}
264	}	267	}
265		268

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(root)/kernel/trunk/arch/ppc32/src/mm/page.c – Rev 1374 → 1378