WebSVN – HelenOS – Diff – //trunk/kernel/arch/sparc64/src/mm/as.c



 
int as_constructor_arch(as_t *as, int flags)
{
#ifdef CONFIG_TSB
    int order = fnzb32(((ITSB_ENTRY_COUNT + DTSB_ENTRY_COUNT) *
        sizeof(tsb_entry_t)) >> MMU_FRAME_WIDTH);
    uintptr_t tsb = (uintptr_t) frame_alloc(order, flags | FRAME_KA);
 
    if (!tsb)
        return -1;
 
    as->arch.itsb = (tsb_entry_t *) tsb;
    as->arch.dtsb = (tsb_entry_t *) (tsb + ITSB_ENTRY_COUNT *
        sizeof(tsb_entry_t));
    memsetb((uintptr_t) as->arch.itsb,
        (ITSB_ENTRY_COUNT + DTSB_ENTRY_COUNT) * sizeof(tsb_entry_t), 0);
#endif
    return 0;
}
 
int as_destructor_arch(as_t *as)
{
#ifdef CONFIG_TSB
    count_t cnt = ((ITSB_ENTRY_COUNT + DTSB_ENTRY_COUNT) *
        sizeof(tsb_entry_t)) >> MMU_FRAME_WIDTH;
    frame_free(KA2PA((uintptr_t) as->arch.itsb));
    return cnt;
#else
    return 0;
#endif

 
    ASSERT(as->arch.itsb && as->arch.dtsb);
 
    uintptr_t tsb = (uintptr_t) as->arch.itsb;
       
    if (!overlaps(tsb, 8 * MMU_PAGE_SIZE, base, 1 << KERNEL_PAGE_WIDTH)) {
        /*
         * TSBs were allocated from memory not covered
         * by the locked 4M kernel DTLB entry. We need
         * to map both TSBs explicitly.
         */

       
    tsb_base.value = 0;
    tsb_base.size = TSB_SIZE;
    tsb_base.split = 0;
 
    tsb_base.base = ((uintptr_t) as->arch.itsb) >> MMU_PAGE_WIDTH;
    itsb_base_write(tsb_base.value);
    tsb_base.base = ((uintptr_t) as->arch.dtsb) >> MMU_PAGE_WIDTH;
    dtsb_base_write(tsb_base.value);
#endif
}
 
/** Perform sparc64-specific tasks when an address space is removed from the

 
    ASSERT(as->arch.itsb && as->arch.dtsb);
 
    uintptr_t tsb = (uintptr_t) as->arch.itsb;
       
    if (!overlaps(tsb, 8 * MMU_PAGE_SIZE, base, 1 << KERNEL_PAGE_WIDTH)) {
        /*
         * TSBs were allocated from memory not covered
         * by the locked 4M kernel DTLB entry. We need
         * to demap the entry installed by as_install_arch().
         */

Rev 2089	Rev 2141
Line 60...	Line 60...
60		60
61	int as_constructor_arch(as_t *as, int flags)	61	int as_constructor_arch(as_t *as, int flags)
62	{	62	{
63	#ifdef CONFIG_TSB	63	#ifdef CONFIG_TSB
64	int order = fnzb32(((ITSB_ENTRY_COUNT + DTSB_ENTRY_COUNT) *	64	int order = fnzb32(((ITSB_ENTRY_COUNT + DTSB_ENTRY_COUNT) *
65	sizeof(tsb_entry_t)) >> FRAME_WIDTH);	65	sizeof(tsb_entry_t)) >> MMU_FRAME_WIDTH);
66	uintptr_t tsb = (uintptr_t) frame_alloc(order, flags \| FRAME_KA);	66	uintptr_t tsb = (uintptr_t) frame_alloc(order, flags \| FRAME_KA);
67		67
68	if (!tsb)	68	if (!tsb)
69	return -1;	69	return -1;
70		70
71	as->arch.itsb = (tsb_entry_t *) tsb;	71	as->arch.itsb = (tsb_entry_t *) tsb;
72	as->arch.dtsb = (tsb_entry_t ) (tsb + ITSB_ENTRY_COUNT	72	as->arch.dtsb = (tsb_entry_t ) (tsb + ITSB_ENTRY_COUNT
73	sizeof(tsb_entry_t));	73	sizeof(tsb_entry_t));
74	memsetb((uintptr_t) as->arch.itsb, (ITSB_ENTRY_COUNT + DTSB_ENTRY_COUNT)	74	memsetb((uintptr_t) as->arch.itsb,
75	* sizeof(tsb_entry_t), 0);	75	(ITSB_ENTRY_COUNT + DTSB_ENTRY_COUNT) * sizeof(tsb_entry_t), 0);
76	#endif	76	#endif
77	return 0;	77	return 0;
78	}	78	}
79		79
80	int as_destructor_arch(as_t *as)	80	int as_destructor_arch(as_t *as)
81	{	81	{
82	#ifdef CONFIG_TSB	82	#ifdef CONFIG_TSB
83	count_t cnt = ((ITSB_ENTRY_COUNT + DTSB_ENTRY_COUNT) *	83	count_t cnt = ((ITSB_ENTRY_COUNT + DTSB_ENTRY_COUNT) *
84	sizeof(tsb_entry_t)) >> FRAME_WIDTH;	84	sizeof(tsb_entry_t)) >> MMU_FRAME_WIDTH;
85	frame_free(KA2PA((uintptr_t) as->arch.itsb));	85	frame_free(KA2PA((uintptr_t) as->arch.itsb));
86	return cnt;	86	return cnt;
87	#else	87	#else
88	return 0;	88	return 0;
89	#endif	89	#endif
Line 137...	Line 137...
137		137
138	ASSERT(as->arch.itsb && as->arch.dtsb);	138	ASSERT(as->arch.itsb && as->arch.dtsb);
139		139
140	uintptr_t tsb = (uintptr_t) as->arch.itsb;	140	uintptr_t tsb = (uintptr_t) as->arch.itsb;
141		141
142	if (!overlaps(tsb, 8 * PAGE_SIZE, base, 1 << KERNEL_PAGE_WIDTH)) {	142	if (!overlaps(tsb, 8 * MMU_PAGE_SIZE, base, 1 << KERNEL_PAGE_WIDTH)) {
143	/*	143	/*
144	* TSBs were allocated from memory not covered	144	* TSBs were allocated from memory not covered
145	* by the locked 4M kernel DTLB entry. We need	145	* by the locked 4M kernel DTLB entry. We need
146	* to map both TSBs explicitly.	146	* to map both TSBs explicitly.
147	*/	147	*/
Line 156...	Line 156...
156		156
157	tsb_base.value = 0;	157	tsb_base.value = 0;
158	tsb_base.size = TSB_SIZE;	158	tsb_base.size = TSB_SIZE;
159	tsb_base.split = 0;	159	tsb_base.split = 0;
160		160
161	tsb_base.base = ((uintptr_t) as->arch.itsb) >> PAGE_WIDTH;	161	tsb_base.base = ((uintptr_t) as->arch.itsb) >> MMU_PAGE_WIDTH;
162	itsb_base_write(tsb_base.value);	162	itsb_base_write(tsb_base.value);
163	tsb_base.base = ((uintptr_t) as->arch.dtsb) >> PAGE_WIDTH;	163	tsb_base.base = ((uintptr_t) as->arch.dtsb) >> MMU_PAGE_WIDTH;
164	dtsb_base_write(tsb_base.value);	164	dtsb_base_write(tsb_base.value);
165	#endif	165	#endif
166	}	166	}
167		167
168	/** Perform sparc64-specific tasks when an address space is removed from the	168	/** Perform sparc64-specific tasks when an address space is removed from the
Line 187...	Line 187...
187		187
188	ASSERT(as->arch.itsb && as->arch.dtsb);	188	ASSERT(as->arch.itsb && as->arch.dtsb);
189		189
190	uintptr_t tsb = (uintptr_t) as->arch.itsb;	190	uintptr_t tsb = (uintptr_t) as->arch.itsb;
191		191
192	if (!overlaps(tsb, 8 * PAGE_SIZE, base, 1 << KERNEL_PAGE_WIDTH)) {	192	if (!overlaps(tsb, 8 * MMU_PAGE_SIZE, base, 1 << KERNEL_PAGE_WIDTH)) {
193	/*	193	/*
194	* TSBs were allocated from memory not covered	194	* TSBs were allocated from memory not covered
195	* by the locked 4M kernel DTLB entry. We need	195	* by the locked 4M kernel DTLB entry. We need
196	* to demap the entry installed by as_install_arch().	196	* to demap the entry installed by as_install_arch().
197	*/	197	*/

Subversion Repositories HelenOS

(root)//trunk/kernel/arch/sparc64/src/mm/as.c – Rev 2089 → 2141