WebSVN – HelenOS-historic – Diff – /kernel/trunk/arch/amd64/src/mm/page.c



#define PTL1_ADDR(ptl0, page) ((pte_t *)PA2KA(GET_PTL1_ADDRESS_ARCH(ptl0, PTL0_INDEX_ARCH(page))))
#define PTL2_ADDR(ptl1, page) ((pte_t *)PA2KA(GET_PTL2_ADDRESS_ARCH(ptl1, PTL1_INDEX_ARCH(page))))
#define PTL3_ADDR(ptl2, page) ((pte_t *)PA2KA(GET_PTL3_ADDRESS_ARCH(ptl2, PTL2_INDEX_ARCH(page))))
 
#define SETUP_PTL1(ptl0, page, tgt)  {  \
    SET_PTL1_ADDRESS_ARCH(ptl0, PTL0_INDEX_ARCH(page), (uintptr_t)KA2PA(tgt)); \
        SET_PTL1_FLAGS_ARCH(ptl0, PTL0_INDEX_ARCH(page), PAGE_WRITE | PAGE_EXEC); \
    }
#define SETUP_PTL2(ptl1, page, tgt)  {  \
    SET_PTL2_ADDRESS_ARCH(ptl1, PTL1_INDEX_ARCH(page), (uintptr_t)KA2PA(tgt)); \
        SET_PTL2_FLAGS_ARCH(ptl1, PTL1_INDEX_ARCH(page), PAGE_WRITE | PAGE_EXEC); \
    }
#define SETUP_PTL3(ptl2, page, tgt)  {  \
    SET_PTL3_ADDRESS_ARCH(ptl2, PTL2_INDEX_ARCH(page), (uintptr_t)KA2PA(tgt)); \
        SET_PTL3_FLAGS_ARCH(ptl2, PTL2_INDEX_ARCH(page), PAGE_WRITE | PAGE_EXEC); \
    }
#define SETUP_FRAME(ptl3, page, tgt)  { \
    SET_FRAME_ADDRESS_ARCH(ptl3, PTL3_INDEX_ARCH(page), (uintptr_t)KA2PA(tgt)); \
        SET_FRAME_FLAGS_ARCH(ptl3, PTL3_INDEX_ARCH(page), PAGE_WRITE | PAGE_EXEC); \
    }
 
 
void page_arch_init(void)
{
    uintptr_t cur;
    int i;
    int identity_flags = PAGE_CACHEABLE | PAGE_EXEC | PAGE_GLOBAL;
 
    if (config.cpu_active == 1) {
        page_mapping_operations = &pt_mapping_operations;

                page_mapping_insert(AS_KERNEL, PA2KA_CODE(KA2PA(cur)), KA2PA(cur), identity_flags);
            }
        }
 
        exc_register(14, "page_fault", (iroutine)page_fault);
        write_cr3((uintptr_t) AS_KERNEL->page_table);
    }
    else {
        write_cr3((uintptr_t) AS_KERNEL->page_table);
    }
}
 
 
/** Identity page mapper

 * is initializaed. This thing clears page table and fills in the specific
 * items.
 */
void ident_page_fault(int n, istate_t *istate)
{
    uintptr_t page;
    static uintptr_t oldpage = 0;
    pte_t *aptl_1, *aptl_2, *aptl_3;
 
    page = read_cr2();
    if (oldpage) {
        /* Unmap old address */

}
 
 
void page_fault(int n, istate_t *istate)
{
    uintptr_t page;
    pf_access_t access;
   
    page = read_cr2();
   
    if (istate->error_word & PFERR_CODE_RSVD)

        panic("page fault\n");
    }
}
 
 
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 1735	Rev 1780
Line 60...	Line 60...
60	#define PTL1_ADDR(ptl0, page) ((pte_t *)PA2KA(GET_PTL1_ADDRESS_ARCH(ptl0, PTL0_INDEX_ARCH(page))))	60	#define PTL1_ADDR(ptl0, page) ((pte_t *)PA2KA(GET_PTL1_ADDRESS_ARCH(ptl0, PTL0_INDEX_ARCH(page))))
61	#define PTL2_ADDR(ptl1, page) ((pte_t *)PA2KA(GET_PTL2_ADDRESS_ARCH(ptl1, PTL1_INDEX_ARCH(page))))	61	#define PTL2_ADDR(ptl1, page) ((pte_t *)PA2KA(GET_PTL2_ADDRESS_ARCH(ptl1, PTL1_INDEX_ARCH(page))))
62	#define PTL3_ADDR(ptl2, page) ((pte_t *)PA2KA(GET_PTL3_ADDRESS_ARCH(ptl2, PTL2_INDEX_ARCH(page))))	62	#define PTL3_ADDR(ptl2, page) ((pte_t *)PA2KA(GET_PTL3_ADDRESS_ARCH(ptl2, PTL2_INDEX_ARCH(page))))
63		63
64	#define SETUP_PTL1(ptl0, page, tgt) { \	64	#define SETUP_PTL1(ptl0, page, tgt) { \
65	SET_PTL1_ADDRESS_ARCH(ptl0, PTL0_INDEX_ARCH(page), (__address)KA2PA(tgt)); \	65	SET_PTL1_ADDRESS_ARCH(ptl0, PTL0_INDEX_ARCH(page), (uintptr_t)KA2PA(tgt)); \
66	SET_PTL1_FLAGS_ARCH(ptl0, PTL0_INDEX_ARCH(page), PAGE_WRITE \| PAGE_EXEC); \	66	SET_PTL1_FLAGS_ARCH(ptl0, PTL0_INDEX_ARCH(page), PAGE_WRITE \| PAGE_EXEC); \
67	}	67	}
68	#define SETUP_PTL2(ptl1, page, tgt) { \	68	#define SETUP_PTL2(ptl1, page, tgt) { \
69	SET_PTL2_ADDRESS_ARCH(ptl1, PTL1_INDEX_ARCH(page), (__address)KA2PA(tgt)); \	69	SET_PTL2_ADDRESS_ARCH(ptl1, PTL1_INDEX_ARCH(page), (uintptr_t)KA2PA(tgt)); \
70	SET_PTL2_FLAGS_ARCH(ptl1, PTL1_INDEX_ARCH(page), PAGE_WRITE \| PAGE_EXEC); \	70	SET_PTL2_FLAGS_ARCH(ptl1, PTL1_INDEX_ARCH(page), PAGE_WRITE \| PAGE_EXEC); \
71	}	71	}
72	#define SETUP_PTL3(ptl2, page, tgt) { \	72	#define SETUP_PTL3(ptl2, page, tgt) { \
73	SET_PTL3_ADDRESS_ARCH(ptl2, PTL2_INDEX_ARCH(page), (__address)KA2PA(tgt)); \	73	SET_PTL3_ADDRESS_ARCH(ptl2, PTL2_INDEX_ARCH(page), (uintptr_t)KA2PA(tgt)); \
74	SET_PTL3_FLAGS_ARCH(ptl2, PTL2_INDEX_ARCH(page), PAGE_WRITE \| PAGE_EXEC); \	74	SET_PTL3_FLAGS_ARCH(ptl2, PTL2_INDEX_ARCH(page), PAGE_WRITE \| PAGE_EXEC); \
75	}	75	}
76	#define SETUP_FRAME(ptl3, page, tgt) { \	76	#define SETUP_FRAME(ptl3, page, tgt) { \
77	SET_FRAME_ADDRESS_ARCH(ptl3, PTL3_INDEX_ARCH(page), (__address)KA2PA(tgt)); \	77	SET_FRAME_ADDRESS_ARCH(ptl3, PTL3_INDEX_ARCH(page), (uintptr_t)KA2PA(tgt)); \
78	SET_FRAME_FLAGS_ARCH(ptl3, PTL3_INDEX_ARCH(page), PAGE_WRITE \| PAGE_EXEC); \	78	SET_FRAME_FLAGS_ARCH(ptl3, PTL3_INDEX_ARCH(page), PAGE_WRITE \| PAGE_EXEC); \
79	}	79	}
80		80
81		81
82	void page_arch_init(void)	82	void page_arch_init(void)
83	{	83	{
84	__address cur;	84	uintptr_t cur;
85	int i;	85	int i;
86	int identity_flags = PAGE_CACHEABLE \| PAGE_EXEC \| PAGE_GLOBAL;	86	int identity_flags = PAGE_CACHEABLE \| PAGE_EXEC \| PAGE_GLOBAL;
87		87
88	if (config.cpu_active == 1) {	88	if (config.cpu_active == 1) {
89	page_mapping_operations = &pt_mapping_operations;	89	page_mapping_operations = &pt_mapping_operations;
Line 107...	Line 107...
107	page_mapping_insert(AS_KERNEL, PA2KA_CODE(KA2PA(cur)), KA2PA(cur), identity_flags);	107	page_mapping_insert(AS_KERNEL, PA2KA_CODE(KA2PA(cur)), KA2PA(cur), identity_flags);
108	}	108	}
109	}	109	}
110		110
111	exc_register(14, "page_fault", (iroutine)page_fault);	111	exc_register(14, "page_fault", (iroutine)page_fault);
112	write_cr3((__address) AS_KERNEL->page_table);	112	write_cr3((uintptr_t) AS_KERNEL->page_table);
113	}	113	}
114	else {	114	else {
115	write_cr3((__address) AS_KERNEL->page_table);	115	write_cr3((uintptr_t) AS_KERNEL->page_table);
116	}	116	}
117	}	117	}
118		118
119		119
120	/** Identity page mapper	120	/** Identity page mapper
Line 123...	Line 123...
123	* is initializaed. This thing clears page table and fills in the specific	123	* is initializaed. This thing clears page table and fills in the specific
124	* items.	124	* items.
125	*/	125	*/
126	void ident_page_fault(int n, istate_t *istate)	126	void ident_page_fault(int n, istate_t *istate)
127	{	127	{
128	__address page;	128	uintptr_t page;
129	static __address oldpage = 0;	129	static uintptr_t oldpage = 0;
130	pte_t aptl_1, aptl_2, *aptl_3;	130	pte_t aptl_1, aptl_2, *aptl_3;
131		131
132	page = read_cr2();	132	page = read_cr2();
133	if (oldpage) {	133	if (oldpage) {
134	/* Unmap old address */	134	/* Unmap old address */
Line 171...	Line 171...
171	}	171	}
172		172
173		173
174	void page_fault(int n, istate_t *istate)	174	void page_fault(int n, istate_t *istate)
175	{	175	{
176	__address page;	176	uintptr_t page;
177	pf_access_t access;	177	pf_access_t access;
178		178
179	page = read_cr2();	179	page = read_cr2();
180		180
181	if (istate->error_word & PFERR_CODE_RSVD)	181	if (istate->error_word & PFERR_CODE_RSVD)
Line 196...	Line 196...
196	panic("page fault\n");	196	panic("page fault\n");
197	}	197	}
198	}	198	}
199		199
200		200
201	__address hw_map(__address physaddr, size_t size)	201	uintptr_t hw_map(uintptr_t physaddr, size_t size)
202	{	202	{
203	if (last_frame + ALIGN_UP(size, PAGE_SIZE) > KA2PA(KERNEL_ADDRESS_SPACE_END_ARCH))	203	if (last_frame + ALIGN_UP(size, PAGE_SIZE) > KA2PA(KERNEL_ADDRESS_SPACE_END_ARCH))
204	panic("Unable to map physical memory %p (%d bytes)", physaddr, size)	204	panic("Unable to map physical memory %p (%d bytes)", physaddr, size)
205		205
206	__address virtaddr = PA2KA(last_frame);	206	uintptr_t virtaddr = PA2KA(last_frame);
207	pfn_t i;	207	pfn_t i;
208	for (i = 0; i < ADDR2PFN(ALIGN_UP(size, PAGE_SIZE)); i++)	208	for (i = 0; i < ADDR2PFN(ALIGN_UP(size, PAGE_SIZE)); i++)
209	page_mapping_insert(AS_KERNEL, virtaddr + PFN2ADDR(i), physaddr + PFN2ADDR(i), PAGE_NOT_CACHEABLE);	209	page_mapping_insert(AS_KERNEL, virtaddr + PFN2ADDR(i), physaddr + PFN2ADDR(i), PAGE_NOT_CACHEABLE);
210		210
211	last_frame = ALIGN_UP(last_frame + size, FRAME_SIZE);	211	last_frame = ALIGN_UP(last_frame + size, FRAME_SIZE);

Subversion Repositories HelenOS-historic

(root)/kernel/trunk/arch/amd64/src/mm/page.c @ 809 – Rev 1735 → 1780