ia32
[Interrupt handling and dispatching]

Files
file	interrupt.h
file	interrupt.c
Data Structures
struct	istate
Defines
#define	IVT_ITEMS   IDT_ITEMS
#define	EXC_COUNT   32
#define	IRQ_COUNT   16
#define	IVT_EXCBASE   0
#define	IVT_IRQBASE   (IVT_EXCBASE+EXC_COUNT)
#define	IVT_FREEBASE   (IVT_IRQBASE+IRQ_COUNT)
#define	IRQ_CLK   0
#define	IRQ_KBD   1
#define	IRQ_PIC1   2
#define	IRQ_PIC_SPUR   7
#define	VECTOR_APIC_SPUR   (IVT_ITEMS-1)
#define	VECTOR_DEBUG   1
#define	VECTOR_PIC_SPUR   (IVT_IRQBASE+IRQ_PIC_SPUR)
#define	VECTOR_CLK   (IVT_IRQBASE+IRQ_CLK)
#define	VECTOR_KBD   (IVT_IRQBASE+IRQ_KBD)
#define	VECTOR_SYSCALL   (IVT_FREEBASE+0)
#define	VECTOR_TLB_SHOOTDOWN_IPI   (IVT_FREEBASE+1)
#define	VECTOR_DEBUG_IPI   (IVT_FREEBASE+2)
Functions
static int	istate_from_uspace (istate_t *istate)
static void	istate_set_retaddr (istate_t *istate, __address retaddr)
static __native	istate_get_pc (istate_t *istate)
void	PRINT_INFO_ERRCODE (istate_t *istate)
void	null_interrupt (int n, istate_t *istate)
void	gp_fault (int n, istate_t *istate)
void	nm_fault (int n, istate_t *istate)
void	ss_fault (int n, istate_t *istate)
void	simd_fp_exception (int n, istate_t *istate)
void	syscall (int n, istate_t *istate)
void	tlb_shootdown_ipi (int n, istate_t *istate)
void	trap_virtual_enable_irqs (__u16 irqmask)
void	trap_virtual_disable_irqs (__u16 irqmask)
void	trap_virtual_eoi (void)
static void	ipc_int (int n, istate_t *istate)
void	irq_ipc_bind_arch (__native irq)
Variables
void(*	disable_irqs_function )(__u16 irqmask)
void(*	enable_irqs_function )(__u16 irqmask)
void(*	eoi_function )(void)
void(*	disable_irqs_function )(__u16 irqmask) = NULL
void(*	enable_irqs_function )(__u16 irqmask) = NULL
void(*	eoi_function )(void) = NULL

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Define Documentation

#define EXC_COUNT   32

Definition at line 43 of file interrupt.h.

#define IRQ_CLK   0

Definition at line 50 of file interrupt.h. Referenced by i8254_normal_operation(), and irq_ipc_bind_arch().

#define IRQ_COUNT   16

Definition at line 44 of file interrupt.h. Referenced by apic_init(), ipc_init(), sys_ipc_register_irq(), and sys_ipc_unregister_irq().

#define IRQ_KBD   1

Definition at line 51 of file interrupt.h. Referenced by i8042_init().

#define IRQ_PIC1   2

Definition at line 52 of file interrupt.h. Referenced by i8259_init().

#define IRQ_PIC_SPUR   7

Definition at line 53 of file interrupt.h.

#define IVT_EXCBASE   0

Definition at line 46 of file interrupt.h.

#define IVT_FREEBASE   (IVT_IRQBASE+IRQ_COUNT)

Definition at line 48 of file interrupt.h.

#define IVT_IRQBASE   (IVT_EXCBASE+EXC_COUNT)

Definition at line 47 of file interrupt.h. Referenced by apic_init(), i8259_init(), ipc_int(), and irq_ipc_bind_arch().

#define IVT_ITEMS   IDT_ITEMS

Definition at line 41 of file interrupt.h.

#define VECTOR_APIC_SPUR   (IVT_ITEMS-1)

Definition at line 56 of file interrupt.h. Referenced by apic_init(), and l_apic_init().

#define VECTOR_CLK   (IVT_IRQBASE+IRQ_CLK)

Definition at line 64 of file interrupt.h. Referenced by apic_init(), i8254_normal_operation(), and l_apic_init().

#define VECTOR_DEBUG   1

Definition at line 62 of file interrupt.h.

#define VECTOR_DEBUG_IPI   (IVT_FREEBASE+2)

Definition at line 69 of file interrupt.h.

#define VECTOR_KBD   (IVT_IRQBASE+IRQ_KBD)

Definition at line 65 of file interrupt.h. Referenced by i8042_grab(), and i8042_release().

#define VECTOR_PIC_SPUR   (IVT_IRQBASE+IRQ_PIC_SPUR)

Definition at line 63 of file interrupt.h. Referenced by i8259_init().

#define VECTOR_SYSCALL   (IVT_FREEBASE+0)

Definition at line 67 of file interrupt.h. Referenced by arch_pre_mm_init(), and idt_init().

#define VECTOR_TLB_SHOOTDOWN_IPI   (IVT_FREEBASE+1)

Definition at line 68 of file interrupt.h. Referenced by arch_pre_mm_init(), and tlb_shootdown_ipi_send().

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Function Documentation

void gp_fault (  int  n, istate_t *  istate )

General Protection Fault. Definition at line 95 of file interrupt.c. References CPU, fault_if_from_uspace, io_perm_bitmap_install(), panic, PRINT_INFO_ERRCODE(), spinlock_lock, spinlock_unlock(), and TASK. Here is the call graph for this function:

static void ipc_int (  int  n, istate_t *  istate )  [static]

Definition at line 192 of file interrupt.c. References ipc_irq_send_notif(), IVT_IRQBASE, and trap_virtual_eoi(). Referenced by irq_ipc_bind_arch(). Here is the call graph for this function:

void irq_ipc_bind_arch (  __native  irq  )

Definition at line 200 of file interrupt.c. References exc_register(), ipc_int(), IRQ_CLK, IVT_IRQBASE, and trap_virtual_enable_irqs(). Referenced by sys_ipc_register_irq(). Here is the call graph for this function:

static int istate_from_uspace (  istate_t *  istate  )  [static]

Return true if exception happened while in userspace Definition at line 93 of file interrupt.h. References istate::eip. Referenced by exc_dispatch().

static __native istate_get_pc (  istate_t *  istate  )  [static]

Definition at line 103 of file interrupt.h. References istate::eip.

static void istate_set_retaddr (  istate_t *  istate, __address  retaddr )  [static]

Definition at line 98 of file interrupt.h. References istate::eip.

void nm_fault (  int  n, istate_t *  istate )

Definition at line 146 of file interrupt.c. References fault_if_from_uspace, panic, and scheduler_fpu_lazy_request(). Here is the call graph for this function:

void null_interrupt (  int  n, istate_t *  istate )

Definition at line 86 of file interrupt.c. References fault_if_from_uspace, panic, and PRINT_INFO_ERRCODE(). Referenced by idt_init(). Here is the call graph for this function:

void PRINT_INFO_ERRCODE (  istate_t *  istate  )

Definition at line 63 of file interrupt.c. References CPU, istate::cs, istate::eax, istate::ebp, istate::ebx, istate::ecx, istate::edi, istate::edx, istate::eflags, istate::eip, istate::error_word, istate::esi, get_symtab_entry(), printf(), and istate::stack. Referenced by gp_fault(), null_interrupt(), page_fault(), simd_fp_exception(), and ss_fault(). Here is the call graph for this function:

void simd_fp_exception (  int  n, istate_t *  istate )

Definition at line 130 of file interrupt.c. References fault_if_from_uspace, panic, PRINT_INFO_ERRCODE(), and printf(). Here is the call graph for this function:

void ss_fault (  int  n, istate_t *  istate )

Definition at line 122 of file interrupt.c. References fault_if_from_uspace, panic, and PRINT_INFO_ERRCODE(). Here is the call graph for this function:

void syscall (  int  n, istate_t *  istate )

Definition at line 156 of file interrupt.c. References panic. Referenced by arch_pre_mm_init().

void tlb_shootdown_ipi (  int  n, istate_t *  istate )

Definition at line 161 of file interrupt.c. References tlb_shootdown_ipi_recv(), and trap_virtual_eoi(). Referenced by arch_pre_mm_init(). Here is the call graph for this function:

void trap_virtual_disable_irqs (  __u16  irqmask  )

Definition at line 175 of file interrupt.c. References disable_irqs_function, and panic.

void trap_virtual_enable_irqs (  __u16  irqmask  )

Definition at line 167 of file interrupt.c. References enable_irqs_function, and panic. Referenced by i8042_init(), and irq_ipc_bind_arch().

void trap_virtual_eoi (  void   )

Definition at line 183 of file interrupt.c. References eoi_function, and panic. Referenced by i8042_interrupt(), i8254_interrupt(), ipc_int(), and tlb_shootdown_ipi().

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Variable Documentation

void(* disable_irqs_function)(__u16 irqmask) = NULL

Definition at line 59 of file interrupt.c. Referenced by apic_init(), i8259_init(), and trap_virtual_disable_irqs().

void(* disable_irqs_function)(__u16 irqmask)

Definition at line 59 of file interrupt.c. Referenced by apic_init(), i8259_init(), and trap_virtual_disable_irqs().

void(* enable_irqs_function)(__u16 irqmask) = NULL

Definition at line 60 of file interrupt.c. Referenced by apic_init(), i8259_init(), and trap_virtual_enable_irqs().

void(* enable_irqs_function)(__u16 irqmask)

Definition at line 60 of file interrupt.c. Referenced by apic_init(), i8259_init(), and trap_virtual_enable_irqs().

void(* eoi_function)(void) = NULL

Definition at line 61 of file interrupt.c. Referenced by apic_init(), i8259_init(), and trap_virtual_eoi().

void(* eoi_function)(void)

Definition at line 61 of file interrupt.c. Referenced by apic_init(), i8259_init(), and trap_virtual_eoi().

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