WebSVN – HelenOS-historic – Diff – /kernel/trunk/arch/ppc64/src/mm/page.c



 * @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(as_t *as, bool lock, uintptr_t badvaddr, int access,
                     istate_t *istate, int *pfrc)
{
    /*
     * Check if the mapping exists in page tables.
     */

        }  
    }
}
 
 
static void pht_refill_fail(uintptr_t badvaddr, istate_t *istate)
{
    char *symbol = "";
    char *sym2 = "";
 
    char *s = get_symtab_entry(istate->pc);

        sym2 = s;
    panic("%p: PHT Refill Exception at %p (%s<-%s)\n", badvaddr, istate->pc, symbol, sym2);
}
 
 
static void pht_insert(const uintptr_t vaddr, const pfn_t pfn)
{
    uint32_t page = (vaddr >> 12) & 0xffff;
    uint32_t api = (vaddr >> 22) & 0x3f;
    uint32_t vsid;
   
    asm volatile (
        "mfsrin %0, %1\n"
        : "=r" (vsid)
        : "r" (vaddr)
    );
   
    /* Primary hash (xor) */
    uint32_t h = 0;
    uint32_t hash = vsid ^ page;
    uint32_t base = (hash & 0x3ff) << 3;
    uint32_t i;
    bool found = false;
   
    /* Find unused or colliding
       PTE in PTEG */
    for (i = 0; i < 8; i++) {

        }
    }
   
    if (!found) {
        /* Secondary hash (not) */
        uint32_t base2 = (~hash & 0x3ff) << 3;
       
        /* Find unused or colliding
           PTE in PTEG */
        for (i = 0; i < 8; i++) {
            if ((!phte[base2 + i].v) || ((phte[base2 + i].vsid == vsid) && (phte[base2 + i].api == api))) {

 * @param istate Interrupted register context.
 *
 */
void pht_refill(bool data, istate_t *istate)
{
    uintptr_t badvaddr;
    pte_t *pte;
    int pfrc;
    as_t *as;
    bool lock;
   

}
 
 
void pht_init(void)
{
    memsetb((uintptr_t) phte, 1 << PHT_BITS, 0);
}
 
 
void page_arch_init(void)
{
    if (config.cpu_active == 1) {
        page_mapping_operations = &pt_mapping_operations;
       
        uintptr_t cur;
        int flags;
       
        /* Frames below 128 MB are mapped using BAT,
           map rest of the physical memory */
        for (cur = 128 << 20; cur < last_frame; cur += FRAME_SIZE) {

        }
       
        /* Allocate page hash table */
        phte_t *physical_phte = (phte_t *) frame_alloc(PHT_ORDER, FRAME_KA | FRAME_ATOMIC);
       
        ASSERT((uintptr_t) physical_phte % (1 << PHT_BITS) == 0);
        pht_init();
       
        asm volatile (
            "mtsdr1 %0\n"
            :
            : "r" ((uintptr_t) physical_phte)
        );
    }
}
 
 
uintptr_t hw_map(uintptr_t physaddr, size_t size)
{
    if (last_frame + ALIGN_UP(size, PAGE_SIZE) > KA2PA(KERNEL_ADDRESS_SPACE_END_ARCH))
        panic("Unable to map physical memory %p (%d bytes)", physaddr, size)
   
    uintptr_t virtaddr = PA2KA(last_frame);
    pfn_t i;
    for (i = 0; i < ADDR2PFN(ALIGN_UP(size, PAGE_SIZE)); i++)
        page_mapping_insert(AS_KERNEL, virtaddr + PFN2ADDR(i), physaddr + PFN2ADDR(i), PAGE_NOT_CACHEABLE);
   
    last_frame = ALIGN_UP(last_frame + size, FRAME_SIZE);

Rev 1767	Rev 1780
Line 63...	Line 63...
63	* @param istate Pointer to interrupted state.	63	* @param istate Pointer to interrupted state.
64	* @param pfrc Pointer to variable where as_page_fault() return code will be stored.	64	* @param pfrc Pointer to variable where as_page_fault() return code will be stored.
65	* @return PTE on success, NULL otherwise.	65	* @return PTE on success, NULL otherwise.
66	*	66	*
67	*/	67	*/
68	static pte_t find_mapping_and_check(as_t as, bool lock, __address badvaddr, int access,	68	static pte_t find_mapping_and_check(as_t as, bool lock, uintptr_t badvaddr, int access,
69	istate_t istate, int pfrc)	69	istate_t istate, int pfrc)
70	{	70	{
71	/*	71	/*
72	* Check if the mapping exists in page tables.	72	* Check if the mapping exists in page tables.
73	*/	73	*/
Line 111...	Line 111...
111	}	111	}
112	}	112	}
113	}	113	}
114		114
115		115
116	static void pht_refill_fail(__address badvaddr, istate_t *istate)	116	static void pht_refill_fail(uintptr_t badvaddr, istate_t *istate)
117	{	117	{
118	char *symbol = "";	118	char *symbol = "";
119	char *sym2 = "";	119	char *sym2 = "";
120		120
121	char *s = get_symtab_entry(istate->pc);	121	char *s = get_symtab_entry(istate->pc);
Line 126...	Line 126...
126	sym2 = s;	126	sym2 = s;
127	panic("%p: PHT Refill Exception at %p (%s<-%s)\n", badvaddr, istate->pc, symbol, sym2);	127	panic("%p: PHT Refill Exception at %p (%s<-%s)\n", badvaddr, istate->pc, symbol, sym2);
128	}	128	}
129		129
130		130
131	static void pht_insert(const __address vaddr, const pfn_t pfn)	131	static void pht_insert(const uintptr_t vaddr, const pfn_t pfn)
132	{	132	{
133	__u32 page = (vaddr >> 12) & 0xffff;	133	uint32_t page = (vaddr >> 12) & 0xffff;
134	__u32 api = (vaddr >> 22) & 0x3f;	134	uint32_t api = (vaddr >> 22) & 0x3f;
135	__u32 vsid;	135	uint32_t vsid;
136		136
137	asm volatile (	137	asm volatile (
138	"mfsrin %0, %1\n"	138	"mfsrin %0, %1\n"
139	: "=r" (vsid)	139	: "=r" (vsid)
140	: "r" (vaddr)	140	: "r" (vaddr)
141	);	141	);
142		142
143	/* Primary hash (xor) */	143	/* Primary hash (xor) */
144	__u32 h = 0;	144	uint32_t h = 0;
145	__u32 hash = vsid ^ page;	145	uint32_t hash = vsid ^ page;
146	__u32 base = (hash & 0x3ff) << 3;	146	uint32_t base = (hash & 0x3ff) << 3;
147	__u32 i;	147	uint32_t i;
148	bool found = false;	148	bool found = false;
149		149
150	/* Find unused or colliding	150	/* Find unused or colliding
151	PTE in PTEG */	151	PTE in PTEG */
152	for (i = 0; i < 8; i++) {	152	for (i = 0; i < 8; i++) {
Line 156...	Line 156...
156	}	156	}
157	}	157	}
158		158
159	if (!found) {	159	if (!found) {
160	/* Secondary hash (not) */	160	/* Secondary hash (not) */
161	__u32 base2 = (~hash & 0x3ff) << 3;	161	uint32_t base2 = (~hash & 0x3ff) << 3;
162		162
163	/* Find unused or colliding	163	/* Find unused or colliding
164	PTE in PTEG */	164	PTE in PTEG */
165	for (i = 0; i < 8; i++) {	165	for (i = 0; i < 8; i++) {
166	if ((!phte[base2 + i].v) \|\| ((phte[base2 + i].vsid == vsid) && (phte[base2 + i].api == api))) {	166	if ((!phte[base2 + i].v) \|\| ((phte[base2 + i].vsid == vsid) && (phte[base2 + i].api == api))) {
Line 194...	Line 194...
194	* @param istate Interrupted register context.	194	* @param istate Interrupted register context.
195	*	195	*
196	*/	196	*/
197	void pht_refill(bool data, istate_t *istate)	197	void pht_refill(bool data, istate_t *istate)
198	{	198	{
199	__address badvaddr;	199	uintptr_t badvaddr;
200	pte_t *pte;	200	pte_t *pte;
201	int pfrc;	201	int pfrc;
202	as_t *as;	202	as_t *as;
203	bool lock;	203	bool lock;
204		204
Line 250...	Line 250...
250	}	250	}
251		251
252		252
253	void pht_init(void)	253	void pht_init(void)
254	{	254	{
255	memsetb((__address) phte, 1 << PHT_BITS, 0);	255	memsetb((uintptr_t) phte, 1 << PHT_BITS, 0);
256	}	256	}
257		257
258		258
259	void page_arch_init(void)	259	void page_arch_init(void)
260	{	260	{
261	if (config.cpu_active == 1) {	261	if (config.cpu_active == 1) {
262	page_mapping_operations = &pt_mapping_operations;	262	page_mapping_operations = &pt_mapping_operations;
263		263
264	__address cur;	264	uintptr_t cur;
265	int flags;	265	int flags;
266		266
267	/* Frames below 128 MB are mapped using BAT,	267	/* Frames below 128 MB are mapped using BAT,
268	map rest of the physical memory */	268	map rest of the physical memory */
269	for (cur = 128 << 20; cur < last_frame; cur += FRAME_SIZE) {	269	for (cur = 128 << 20; cur < last_frame; cur += FRAME_SIZE) {
Line 274...	Line 274...
274	}	274	}
275		275
276	/* Allocate page hash table */	276	/* Allocate page hash table */
277	phte_t physical_phte = (phte_t ) frame_alloc(PHT_ORDER, FRAME_KA \| FRAME_ATOMIC);	277	phte_t physical_phte = (phte_t ) frame_alloc(PHT_ORDER, FRAME_KA \| FRAME_ATOMIC);
278		278
279	ASSERT((__address) physical_phte % (1 << PHT_BITS) == 0);	279	ASSERT((uintptr_t) physical_phte % (1 << PHT_BITS) == 0);
280	pht_init();	280	pht_init();
281		281
282	asm volatile (	282	asm volatile (
283	"mtsdr1 %0\n"	283	"mtsdr1 %0\n"
284	:	284	:
285	: "r" ((__address) physical_phte)	285	: "r" ((uintptr_t) physical_phte)
286	);	286	);
287	}	287	}
288	}	288	}
289		289
290		290
291	__address hw_map(__address physaddr, size_t size)	291	uintptr_t hw_map(uintptr_t physaddr, size_t size)
292	{	292	{
293	if (last_frame + ALIGN_UP(size, PAGE_SIZE) > KA2PA(KERNEL_ADDRESS_SPACE_END_ARCH))	293	if (last_frame + ALIGN_UP(size, PAGE_SIZE) > KA2PA(KERNEL_ADDRESS_SPACE_END_ARCH))
294	panic("Unable to map physical memory %p (%d bytes)", physaddr, size)	294	panic("Unable to map physical memory %p (%d bytes)", physaddr, size)
295		295
296	__address virtaddr = PA2KA(last_frame);	296	uintptr_t virtaddr = PA2KA(last_frame);
297	pfn_t i;	297	pfn_t i;
298	for (i = 0; i < ADDR2PFN(ALIGN_UP(size, PAGE_SIZE)); i++)	298	for (i = 0; i < ADDR2PFN(ALIGN_UP(size, PAGE_SIZE)); i++)
299	page_mapping_insert(AS_KERNEL, virtaddr + PFN2ADDR(i), physaddr + PFN2ADDR(i), PAGE_NOT_CACHEABLE);	299	page_mapping_insert(AS_KERNEL, virtaddr + PFN2ADDR(i), physaddr + PFN2ADDR(i), PAGE_NOT_CACHEABLE);
300		300
301	last_frame = ALIGN_UP(last_frame + size, FRAME_SIZE);	301	last_frame = ALIGN_UP(last_frame + size, FRAME_SIZE);

Subversion Repositories HelenOS-historic

(root)/kernel/trunk/arch/ppc64/src/mm/page.c @ 1729 – Rev 1767 → 1780