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)) >> 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)) >> FRAME_WIDTH;
    frame_free(KA2PA((uintptr_t) as->arch.itsb));
    return cnt;
#else
    return 0;
#endif

    interrupts_restore(ipl);
#endif
    return 0;
}
 
/** Perform sparc64-specific tasks when an address space becomes active on the
 * processor.
 *
 * Install ASID and map TSBs.
 *
 * @param as Address space.
 */

 
    ASSERT(as->arch.itsb && as->arch.dtsb);
 
    uintptr_t tsb = (uintptr_t) as->arch.itsb;
       
    if (!overlaps(tsb, 8 * 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.base = ((uintptr_t) as->arch.dtsb) >> PAGE_WIDTH;
    dtsb_base_write(tsb_base.value);
#endif
}
 
/** Perform sparc64-specific tasks when an address space is removed from the
 * processor.
 *
 * Demap TSBs.
 *
 * @param as Address space.
 */

 
    ASSERT(as->arch.itsb && as->arch.dtsb);
 
    uintptr_t tsb = (uintptr_t) as->arch.itsb;
       
    if (!overlaps(tsb, 8 * 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 2015	Rev 2048
Line 59...	Line 59...
59	}	59	}
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)*sizeof(tsb_entry_t))>>FRAME_WIDTH);	64	int order = fnzb32(((ITSB_ENTRY_COUNT + DTSB_ENTRY_COUNT) *
-		65	sizeof(tsb_entry_t)) >> FRAME_WIDTH);
65	uintptr_t tsb = (uintptr_t) frame_alloc(order, flags \| FRAME_KA);	66	uintptr_t tsb = (uintptr_t) frame_alloc(order, flags \| FRAME_KA);
66		67
67	if (!tsb)	68	if (!tsb)
68	return -1;	69	return -1;
69		70
70	as->arch.itsb = (tsb_entry_t *) tsb;	71	as->arch.itsb = (tsb_entry_t *) tsb;
71	as->arch.dtsb = (tsb_entry_t ) (tsb + ITSB_ENTRY_COUNT sizeof(tsb_entry_t));	72	as->arch.dtsb = (tsb_entry_t ) (tsb + ITSB_ENTRY_COUNT
-		73	sizeof(tsb_entry_t));
72	memsetb((uintptr_t) as->arch.itsb, (ITSB_ENTRY_COUNT+DTSB_ENTRY_COUNT)*sizeof(tsb_entry_t), 0);	74	memsetb((uintptr_t) as->arch.itsb, (ITSB_ENTRY_COUNT + DTSB_ENTRY_COUNT)
-		75	* sizeof(tsb_entry_t), 0);
73	#endif	76	#endif
74	return 0;	77	return 0;
75	}	78	}
76		79
77	int as_destructor_arch(as_t *as)	80	int as_destructor_arch(as_t *as)
78	{	81	{
79	#ifdef CONFIG_TSB	82	#ifdef CONFIG_TSB
80	count_t cnt = ((ITSB_ENTRY_COUNT+DTSB_ENTRY_COUNT)*sizeof(tsb_entry_t))>>FRAME_WIDTH;	83	count_t cnt = ((ITSB_ENTRY_COUNT + DTSB_ENTRY_COUNT) *
-		84	sizeof(tsb_entry_t)) >> FRAME_WIDTH;
81	frame_free(KA2PA((uintptr_t) as->arch.itsb));	85	frame_free(KA2PA((uintptr_t) as->arch.itsb));
82	return cnt;	86	return cnt;
83	#else	87	#else
84	return 0;	88	return 0;
85	#endif	89	#endif
Line 97...	Line 101...
97	interrupts_restore(ipl);	101	interrupts_restore(ipl);
98	#endif	102	#endif
99	return 0;	103	return 0;
100	}	104	}
101		105
102	/** Perform sparc64-specific tasks when an address space becomes active on the processor.	106	/** Perform sparc64-specific tasks when an address space becomes active on the
-		107	* processor.
103	*	108	*
104	* Install ASID and map TSBs.	109	* Install ASID and map TSBs.
105	*	110	*
106	* @param as Address space.	111	* @param as Address space.
107	*/	112	*/
Line 132...	Line 137...
132		137
133	ASSERT(as->arch.itsb && as->arch.dtsb);	138	ASSERT(as->arch.itsb && as->arch.dtsb);
134		139
135	uintptr_t tsb = (uintptr_t) as->arch.itsb;	140	uintptr_t tsb = (uintptr_t) as->arch.itsb;
136		141
137	if (!overlaps(tsb, 8*PAGE_SIZE, base, 1 << KERNEL_PAGE_WIDTH)) {	142	if (!overlaps(tsb, 8 * PAGE_SIZE, base, 1 << KERNEL_PAGE_WIDTH)) {
138	/*	143	/*
139	* TSBs were allocated from memory not covered	144	* TSBs were allocated from memory not covered
140	* by the locked 4M kernel DTLB entry. We need	145	* by the locked 4M kernel DTLB entry. We need
141	* to map both TSBs explicitly.	146	* to map both TSBs explicitly.
142	*/	147	*/
Line 158...	Line 163...
158	tsb_base.base = ((uintptr_t) as->arch.dtsb) >> PAGE_WIDTH;	163	tsb_base.base = ((uintptr_t) as->arch.dtsb) >> PAGE_WIDTH;
159	dtsb_base_write(tsb_base.value);	164	dtsb_base_write(tsb_base.value);
160	#endif	165	#endif
161	}	166	}
162		167
163	/** Perform sparc64-specific tasks when an address space is removed from the processor.	168	/** Perform sparc64-specific tasks when an address space is removed from the
-		169	* processor.
164	*	170	*
165	* Demap TSBs.	171	* Demap TSBs.
166	*	172	*
167	* @param as Address space.	173	* @param as Address space.
168	*/	174	*/
Line 181...	Line 187...
181		187
182	ASSERT(as->arch.itsb && as->arch.dtsb);	188	ASSERT(as->arch.itsb && as->arch.dtsb);
183		189
184	uintptr_t tsb = (uintptr_t) as->arch.itsb;	190	uintptr_t tsb = (uintptr_t) as->arch.itsb;
185		191
186	if (!overlaps(tsb, 8*PAGE_SIZE, base, 1 << KERNEL_PAGE_WIDTH)) {	192	if (!overlaps(tsb, 8 * PAGE_SIZE, base, 1 << KERNEL_PAGE_WIDTH)) {
187	/*	193	/*
188	* TSBs were allocated from memory not covered	194	* TSBs were allocated from memory not covered
189	* by the locked 4M kernel DTLB entry. We need	195	* by the locked 4M kernel DTLB entry. We need
190	* to demap the entry installed by as_install_arch().	196	* to demap the entry installed by as_install_arch().
191	*/	197	*/

Subversion Repositories HelenOS

(root)/trunk/kernel/arch/sparc64/src/mm/as.c @ 2071 – Rev 2015 → 2048