mips32
[Memory management]


Files
file	as.h
file	asid.h
file	frame.h
file	memory_init.h
file	page.h
file	tlb.h
file	as.c
file	frame.c
file	page.c
file	tlb.c
Data Structures
union	entry_lo
struct	pte
union	entry_hi
union	page_mask
union	index
Defines
#define	KERNEL_ADDRESS_SPACE_SHADOWED_ARCH 0
#define	KERNEL_ADDRESS_SPACE_START_ARCH (unsigned long) 0x80000000
#define	KERNEL_ADDRESS_SPACE_END_ARCH (unsigned long) 0xffffffff
#define	USER_ADDRESS_SPACE_START_ARCH (unsigned long) 0x00000000
#define	USER_ADDRESS_SPACE_END_ARCH (unsigned long) 0x7fffffff
#define	USTACK_ADDRESS_ARCH (0x80000000-PAGE_SIZE)
#define	ASID_MAX_ARCH 255
#define	FRAME_WIDTH 14
#define	FRAME_SIZE (1<<FRAME_WIDTH)
#define	get_memory_size() CONFIG_MEMORY_SIZE
#define	PAGE_WIDTH FRAME_WIDTH
#define	PAGE_SIZE FRAME_SIZE
#define	KA2PA(x) (((__address) (x)) - 0x80000000)
#define	PA2KA(x) (((__address) (x)) + 0x80000000)
#define	TLB_ENTRY_COUNT 48
#define	TLB_WIRED 1
#define	TLB_KSTACK_WIRED_INDEX 0
#define	TLB_PAGE_MASK_16K (0x3<<13)
#define	PAGE_UNCACHED 2
#define	PAGE_CACHEABLE_EXC_WRITE 5
#define	tlb_invalidate(asid) tlb_invalidate_asid(asid)
Typedefs
typedef __u8	asid_t
typedef entry_lo	entry_lo_t
typedef entry_hi	entry_hi_t
typedef page_mask	page_mask_t
typedef index	tlb_index_t
Functions
void	as_arch_init (void)
static void	tlbp (void)
static void	tlbr (void)
static void	tlbwi (void)
static void	tlbwr (void)
void	tlb_invalid (istate_t *istate)
void	tlb_refill (istate_t *istate)
void	tlb_modified (istate_t *istate)
void	as_install_arch (as_t *as)
void	frame_arch_init (void)
void	page_arch_init (void)
__address	hw_map (__address physaddr, size_t size)
static void	tlb_refill_fail (istate_t *istate)
static void	tlb_invalid_fail (istate_t *istate)
static void	tlb_modified_fail (istate_t *istate)
static pte_t *	find_mapping_and_check (__address badvaddr, int access, istate_t istate, int pfrc)
static void	prepare_entry_lo (entry_lo_t *lo, bool g, bool v, bool d, bool cacheable, __address pfn)
static void	prepare_entry_hi (entry_hi_t *hi, asid_t asid, __address addr)
void	tlb_arch_init (void)
void	tlb_print (void)
void	tlb_invalidate_all (void)
void	tlb_invalidate_asid (asid_t asid)
void	tlb_invalidate_pages (asid_t asid, __address page, count_t cnt)

Define Documentation

#define ASID_MAX_ARCH 255

Definition at line 40 of file asid.h.

#define FRAME_SIZE (1<<FRAME_WIDTH)

Definition at line 39 of file frame.h.
Referenced by anon_page_fault(), arc_frame_init(), elf_frame_free(), elf_page_fault(), phys_page_fault(), and sys_physmem_map().

#define FRAME_WIDTH 14

Definition at line 38 of file frame.h.
Referenced by ADDR2PFN(), PFN2ADDR(), and SIZE2FRAMES().

#define get_memory_size ( ) CONFIG_MEMORY_SIZE

Definition at line 43 of file memory_init.h.
Referenced by main_bsp().

#define KA2PA ( x ) (((__address) (x)) - 0x80000000)

Definition at line 44 of file page.h.
Referenced by frame_init(), obj2slab(), pt_mapping_insert(), ptl0_create(), return_config_frames(), slab_space_alloc(), slab_space_free(), thr_destructor(), and zone_create().

#define KERNEL_ADDRESS_SPACE_END_ARCH (unsigned long) 0xffffffff

Definition at line 41 of file as.h.

#define KERNEL_ADDRESS_SPACE_SHADOWED_ARCH 0

Definition at line 38 of file as.h.

#define KERNEL_ADDRESS_SPACE_START_ARCH (unsigned long) 0x80000000

Definition at line 40 of file as.h.

#define PA2KA ( x ) (((__address) (x)) + 0x80000000)

Definition at line 45 of file page.h.
Referenced by anon_page_fault(), clock_counter_init(), cpu_init(), fb_init(), klog_init(), pt_mapping_find(), pt_mapping_insert(), pt_mapping_remove(), ptl0_create(), slab_space_alloc(), thr_constructor(), and zone_merge().

#define PAGE_CACHEABLE_EXC_WRITE 5

Definition at line 53 of file tlb.h.
Referenced by prepare_entry_lo().

#define PAGE_SIZE FRAME_SIZE

Definition at line 41 of file page.h.
Referenced by anon_page_fault(), anon_share(), as_area_create(), as_area_destroy(), as_area_resize(), as_area_share(), as_get_size(), badness(), check_area_conflicts(), comp_objects(), ddi_physmem_map(), elf_frame_free(), elf_page_fault(), elf_share(), find_area_and_lock(), klog_init(), load_segment(), main_bsp(), map_structure(), phys_page_fault(), prepare_entry_hi(), pt_mapping_insert(), ptl0_create(), slab_space_alloc(), sys_futex_sleep_timeout(), sys_futex_wakeup(), sys_io(), sys_physmem_map(), task_run_program(), tlb_invalid(), tlb_invalidate_pages(), tlb_modified(), tlb_refill(), used_space_insert(), used_space_remove(), and userspace().

#define PAGE_UNCACHED 2

Definition at line 52 of file tlb.h.
Referenced by prepare_entry_lo().

#define PAGE_WIDTH FRAME_WIDTH

Definition at line 40 of file page.h.
Referenced by as_area_resize(), elf_frame_free(), and elf_page_fault().

#define TLB_ENTRY_COUNT 48

Definition at line 44 of file tlb.h.
Referenced by tlb_arch_init(), tlb_invalidate_all(), tlb_invalidate_asid(), and tlb_print().

#define tlb_invalidate ( asid ) tlb_invalidate_asid(asid)

Definition at line 176 of file tlb.h.

#define TLB_KSTACK_WIRED_INDEX 0

Definition at line 48 of file tlb.h.

#define TLB_PAGE_MASK_16K (0x3<<13)

Definition at line 50 of file tlb.h.
Referenced by tlb_arch_init(), tlb_invalid(), tlb_modified(), and tlb_refill().

#define TLB_WIRED 1

Definition at line 47 of file tlb.h.
Referenced by tlb_invalidate_all().

#define USER_ADDRESS_SPACE_END_ARCH (unsigned long) 0x7fffffff

Definition at line 43 of file as.h.

#define USER_ADDRESS_SPACE_START_ARCH (unsigned long) 0x00000000

Definition at line 42 of file as.h.

#define USTACK_ADDRESS_ARCH (0x80000000-PAGE_SIZE)

Definition at line 45 of file as.h.

Typedef Documentation

typedef __u8 asid_t

Definition at line 42 of file asid.h.

typedef union entry_hi entry_hi_t

Definition at line 56 of file tlb.h.

typedef union entry_lo entry_lo_t

Definition at line 55 of file tlb.h.

typedef union page_mask page_mask_t

Definition at line 57 of file tlb.h.

typedef union index tlb_index_t

Definition at line 58 of file tlb.h.

Function Documentation

void as_arch_init ( void )

Architecture dependent address space init.
Definition at line 45 of file as.c.
References as_operations, as_pt_operations, and asid_fifo_init().
Referenced by as_init().
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void as_install_arch ( as_t * as )

Install address space.
Install ASID.

Parameters:

as Address space structure.

Definition at line 57 of file as.c.
References entry_hi::asid, interrupts_disable(), interrupts_restore(), spinlock_lock, spinlock_unlock(), and entry_hi::value.
Referenced by as_switch().
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pte_t * find_mapping_and_check ( __address badvaddr,

int access,

istate_t * istate,

int * pfrc

) [static]

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.

Parameters:

badvaddr Faulting virtual address.

access Access mode that caused the fault.

istate Pointer to interrupted state.

pfrc Pointer to variable where as_page_fault() return code will be stored.

Returns:
PTE on success, NULL otherwise.

Definition at line 386 of file tlb.c.
References AS, as_page_fault(), entry_hi::asid, ASSERT, NULL, pte::p, page_mapping_find(), page_table_lock(), page_table_unlock(), panic, printf(), and entry_hi::value.
Referenced by tlb_invalid(), tlb_modified(), and tlb_refill().
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void frame_arch_init ( void )

Create memory zones
If ARC is known, read information from ARC, otherwise assume some defaults.

blacklist first FRAME because there is an exception vector

Definition at line 46 of file frame.c.
References ADDR2PFN(), arc_enabled(), arc_frame_init(), config, frame_mark_unavailable(), config_t::memory_size, and zone_create().
Referenced by frame_init().
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__address hw_map ( __address physaddr,

size_t size

)

Map device into kernel space

on mips, all devices are already mapped into kernel space, translate the physical address to uncached area

Definition at line 48 of file page.c.
Referenced by fb_init().

void page_arch_init ( void )

Definition at line 39 of file page.c.
References pt_mapping_operations.
Referenced by page_init().

void prepare_entry_hi ( entry_hi_t * hi,

asid_t asid,

__address addr

) [static]

Definition at line 458 of file tlb.c.
References ALIGN_DOWN, entry_hi::asid, PAGE_SIZE, and entry_hi::value.
Referenced by tlb_invalid(), tlb_invalidate_pages(), tlb_modified(), and tlb_refill().

void prepare_entry_lo ( entry_lo_t * lo,

bool g,

bool v,

bool d,

bool cacheable,

__address pfn

) [static]

Definition at line 448 of file tlb.c.
References entry_lo::c, entry_lo::d, entry_lo::g, PAGE_CACHEABLE_EXC_WRITE, PAGE_UNCACHED, entry_lo::pfn, entry_lo::v, and entry_lo::value.
Referenced by tlb_invalid(), tlb_modified(), and tlb_refill().

void tlb_arch_init ( void )

Initialize TLB
Initialize TLB. Invalidate all entries and mark wired entries.
Definition at line 64 of file tlb.c.
References TLB_ENTRY_COUNT, TLB_PAGE_MASK_16K, and tlbwi().
Referenced by tlb_init().
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void tlb_invalid ( istate_t * istate )

Process TLB Invalid Exception
Process TLB Invalid Exception.

Parameters:

istate Interrupted register context.

Definition at line 166 of file tlb.c.
References pte::a, AS, entry_hi::asid, badvaddr, pte::cacheable, pte::d, find_mapping_and_check(), pte::g, pte::p, index::p, PAGE_SIZE, page_table_lock(), page_table_unlock(), panic, PF_ACCESS_READ, pte::pfn, prepare_entry_hi(), prepare_entry_lo(), printf(), tlb_invalid_fail(), TLB_PAGE_MASK_16K, tlbp(), tlbr(), tlbwi(), entry_lo::value, index::value, and entry_hi::value.
Referenced by tlbinv_exception().
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void tlb_invalid_fail ( istate_t * istate ) [static]

Definition at line 352 of file tlb.c.
References istate::epc, fault_if_from_uspace, get_symtab_entry(), and panic.
Referenced by tlb_invalid().
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void tlb_invalidate_all ( void )

Invalidate all not wired TLB entries.
Definition at line 494 of file tlb.c.
References interrupts_disable(), TLB_ENTRY_COUNT, TLB_WIRED, tlbr(), tlbwi(), entry_lo::v, entry_lo::value, and entry_hi::value.
Referenced by tlb_shootdown_ipi_recv().
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void tlb_invalidate_asid ( asid_t asid )

Invalidate all TLB entries belonging to specified address space.

Parameters:

asid Address space identifier.

Definition at line 528 of file tlb.c.
References entry_hi::asid, ASID_INVALID, ASSERT, interrupts_disable(), TLB_ENTRY_COUNT, tlbr(), tlbwi(), entry_lo::v, entry_lo::value, and entry_hi::value.
Referenced by asid_get(), and tlb_shootdown_ipi_recv().
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void tlb_invalidate_pages ( asid_t asid,

__address page,

count_t cnt

)

Invalidate TLB entries for specified page range belonging to specified address space.

Parameters:

asid Address space identifier.

page First page whose TLB entry is to be invalidated.

cnt Number of entries to invalidate.

Definition at line 570 of file tlb.c.
References ASID_INVALID, ASSERT, interrupts_disable(), index::p, PAGE_SIZE, prepare_entry_hi(), tlbp(), tlbr(), tlbwi(), entry_lo::v, entry_lo::value, index::value, and entry_hi::value.
Referenced by tlb_shootdown_ipi_recv().
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void tlb_modified ( istate_t * istate )

Process TLB Modified Exception
Process TLB Modified Exception.

Parameters:

istate Interrupted register context.

Definition at line 250 of file tlb.c.
References pte::a, AS, entry_hi::asid, badvaddr, pte::cacheable, pte::d, find_mapping_and_check(), pte::g, pte::p, index::p, PAGE_SIZE, page_table_lock(), page_table_unlock(), panic, PF_ACCESS_WRITE, pte::pfn, prepare_entry_hi(), prepare_entry_lo(), printf(), tlb_modified_fail(), TLB_PAGE_MASK_16K, tlbp(), tlbr(), tlbwi(), entry_lo::value, index::value, entry_hi::value, and pte::w.
Referenced by tlbmod_exception().
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void tlb_modified_fail ( istate_t * istate ) [static]

Definition at line 363 of file tlb.c.
References istate::epc, fault_if_from_uspace, get_symtab_entry(), and panic.
Referenced by tlb_modified().
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void tlb_print ( void )

Print contents of TLB.
Definition at line 465 of file tlb.c.
References entry_hi::asid, entry_lo::c, entry_lo::d, entry_lo::g, page_mask::mask, entry_lo::pfn, printf(), TLB_ENTRY_COUNT, tlbr(), entry_lo::v, entry_lo::value, page_mask::value, entry_hi::value, and entry_hi::vpn2.
Referenced by cmd_tlb().
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void tlb_refill ( istate_t * istate )

Process TLB Refill Exception
Process TLB Refill Exception.

Parameters:

istate Interrupted register context.

Definition at line 94 of file tlb.c.
References pte::a, AS, badvaddr, pte::cacheable, pte::d, find_mapping_and_check(), pte::g, pte::p, PAGE_SIZE, page_table_lock(), page_table_unlock(), panic, PF_ACCESS_READ, pte::pfn, prepare_entry_hi(), prepare_entry_lo(), spinlock_lock, spinlock_unlock(), TLB_PAGE_MASK_16K, tlb_refill_fail(), tlbwr(), entry_lo::value, and entry_hi::value.
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void tlb_refill_fail ( istate_t * istate ) [static]

Definition at line 335 of file tlb.c.
References istate::epc, fault_if_from_uspace, get_symtab_entry(), panic, and istate::ra.
Referenced by tlb_refill().
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static void tlbp ( void ) [static]

Probe TLB for Matching Entry
Probe TLB for Matching Entry.
Definition at line 143 of file tlb.h.
Referenced by tlb_invalid(), tlb_invalidate_pages(), and tlb_modified().

static void tlbr ( void ) [static]

Read Indexed TLB Entry
Read Indexed TLB Entry.
Definition at line 153 of file tlb.h.
Referenced by tlb_invalid(), tlb_invalidate_all(), tlb_invalidate_asid(), tlb_invalidate_pages(), tlb_modified(), and tlb_print().

static void tlbwi ( void ) [static]

Write Indexed TLB Entry
Write Indexed TLB Entry.
Definition at line 162 of file tlb.h.
Referenced by tlb_arch_init(), tlb_invalid(), tlb_invalidate_all(), tlb_invalidate_asid(), tlb_invalidate_pages(), and tlb_modified().

static void tlbwr ( void ) [static]

Write Random TLB Entry
Write Random TLB Entry.
Definition at line 171 of file tlb.h.
Referenced by tlb_refill().

Generated on Sun Jun 18 17:12:30 2006 for HelenOS Kernel (mips32) by

1.4.6

mips32 [Memory management]

Files

Data Structures

Defines

Typedefs

Functions

Define Documentation

Typedef Documentation

Function Documentation

mips32
[Memory management]