214 строки
5.5 KiB
C
214 строки
5.5 KiB
C
#ifndef __ASM_IO_APIC_H
|
|
#define __ASM_IO_APIC_H
|
|
|
|
#include <linux/config.h>
|
|
#include <asm/types.h>
|
|
#include <asm/mpspec.h>
|
|
|
|
/*
|
|
* Intel IO-APIC support for SMP and UP systems.
|
|
*
|
|
* Copyright (C) 1997, 1998, 1999, 2000 Ingo Molnar
|
|
*/
|
|
|
|
#ifdef CONFIG_X86_IO_APIC
|
|
|
|
#ifdef CONFIG_PCI_MSI
|
|
static inline int use_pci_vector(void) {return 1;}
|
|
static inline void disable_edge_ioapic_vector(unsigned int vector) { }
|
|
static inline void mask_and_ack_level_ioapic_vector(unsigned int vector) { }
|
|
static inline void end_edge_ioapic_vector (unsigned int vector) { }
|
|
#define startup_level_ioapic startup_level_ioapic_vector
|
|
#define shutdown_level_ioapic mask_IO_APIC_vector
|
|
#define enable_level_ioapic unmask_IO_APIC_vector
|
|
#define disable_level_ioapic mask_IO_APIC_vector
|
|
#define mask_and_ack_level_ioapic mask_and_ack_level_ioapic_vector
|
|
#define end_level_ioapic end_level_ioapic_vector
|
|
#define set_ioapic_affinity set_ioapic_affinity_vector
|
|
|
|
#define startup_edge_ioapic startup_edge_ioapic_vector
|
|
#define shutdown_edge_ioapic disable_edge_ioapic_vector
|
|
#define enable_edge_ioapic unmask_IO_APIC_vector
|
|
#define disable_edge_ioapic disable_edge_ioapic_vector
|
|
#define ack_edge_ioapic ack_edge_ioapic_vector
|
|
#define end_edge_ioapic end_edge_ioapic_vector
|
|
#else
|
|
static inline int use_pci_vector(void) {return 0;}
|
|
static inline void disable_edge_ioapic_irq(unsigned int irq) { }
|
|
static inline void mask_and_ack_level_ioapic_irq(unsigned int irq) { }
|
|
static inline void end_edge_ioapic_irq (unsigned int irq) { }
|
|
#define startup_level_ioapic startup_level_ioapic_irq
|
|
#define shutdown_level_ioapic mask_IO_APIC_irq
|
|
#define enable_level_ioapic unmask_IO_APIC_irq
|
|
#define disable_level_ioapic mask_IO_APIC_irq
|
|
#define mask_and_ack_level_ioapic mask_and_ack_level_ioapic_irq
|
|
#define end_level_ioapic end_level_ioapic_irq
|
|
#define set_ioapic_affinity set_ioapic_affinity_irq
|
|
|
|
#define startup_edge_ioapic startup_edge_ioapic_irq
|
|
#define shutdown_edge_ioapic disable_edge_ioapic_irq
|
|
#define enable_edge_ioapic unmask_IO_APIC_irq
|
|
#define disable_edge_ioapic disable_edge_ioapic_irq
|
|
#define ack_edge_ioapic ack_edge_ioapic_irq
|
|
#define end_edge_ioapic end_edge_ioapic_irq
|
|
#endif
|
|
|
|
#define IO_APIC_BASE(idx) \
|
|
((volatile int *)(__fix_to_virt(FIX_IO_APIC_BASE_0 + idx) \
|
|
+ (mp_ioapics[idx].mpc_apicaddr & ~PAGE_MASK)))
|
|
|
|
/*
|
|
* The structure of the IO-APIC:
|
|
*/
|
|
union IO_APIC_reg_00 {
|
|
u32 raw;
|
|
struct {
|
|
u32 __reserved_2 : 14,
|
|
LTS : 1,
|
|
delivery_type : 1,
|
|
__reserved_1 : 8,
|
|
ID : 8;
|
|
} __attribute__ ((packed)) bits;
|
|
};
|
|
|
|
union IO_APIC_reg_01 {
|
|
u32 raw;
|
|
struct {
|
|
u32 version : 8,
|
|
__reserved_2 : 7,
|
|
PRQ : 1,
|
|
entries : 8,
|
|
__reserved_1 : 8;
|
|
} __attribute__ ((packed)) bits;
|
|
};
|
|
|
|
union IO_APIC_reg_02 {
|
|
u32 raw;
|
|
struct {
|
|
u32 __reserved_2 : 24,
|
|
arbitration : 4,
|
|
__reserved_1 : 4;
|
|
} __attribute__ ((packed)) bits;
|
|
};
|
|
|
|
union IO_APIC_reg_03 {
|
|
u32 raw;
|
|
struct {
|
|
u32 boot_DT : 1,
|
|
__reserved_1 : 31;
|
|
} __attribute__ ((packed)) bits;
|
|
};
|
|
|
|
/*
|
|
* # of IO-APICs and # of IRQ routing registers
|
|
*/
|
|
extern int nr_ioapics;
|
|
extern int nr_ioapic_registers[MAX_IO_APICS];
|
|
|
|
enum ioapic_irq_destination_types {
|
|
dest_Fixed = 0,
|
|
dest_LowestPrio = 1,
|
|
dest_SMI = 2,
|
|
dest__reserved_1 = 3,
|
|
dest_NMI = 4,
|
|
dest_INIT = 5,
|
|
dest__reserved_2 = 6,
|
|
dest_ExtINT = 7
|
|
};
|
|
|
|
struct IO_APIC_route_entry {
|
|
__u32 vector : 8,
|
|
delivery_mode : 3, /* 000: FIXED
|
|
* 001: lowest prio
|
|
* 111: ExtINT
|
|
*/
|
|
dest_mode : 1, /* 0: physical, 1: logical */
|
|
delivery_status : 1,
|
|
polarity : 1,
|
|
irr : 1,
|
|
trigger : 1, /* 0: edge, 1: level */
|
|
mask : 1, /* 0: enabled, 1: disabled */
|
|
__reserved_2 : 15;
|
|
|
|
union { struct { __u32
|
|
__reserved_1 : 24,
|
|
physical_dest : 4,
|
|
__reserved_2 : 4;
|
|
} physical;
|
|
|
|
struct { __u32
|
|
__reserved_1 : 24,
|
|
logical_dest : 8;
|
|
} logical;
|
|
} dest;
|
|
|
|
} __attribute__ ((packed));
|
|
|
|
/*
|
|
* MP-BIOS irq configuration table structures:
|
|
*/
|
|
|
|
/* I/O APIC entries */
|
|
extern struct mpc_config_ioapic mp_ioapics[MAX_IO_APICS];
|
|
|
|
/* # of MP IRQ source entries */
|
|
extern int mp_irq_entries;
|
|
|
|
/* MP IRQ source entries */
|
|
extern struct mpc_config_intsrc mp_irqs[MAX_IRQ_SOURCES];
|
|
|
|
/* non-0 if default (table-less) MP configuration */
|
|
extern int mpc_default_type;
|
|
|
|
static inline unsigned int io_apic_read(unsigned int apic, unsigned int reg)
|
|
{
|
|
*IO_APIC_BASE(apic) = reg;
|
|
return *(IO_APIC_BASE(apic)+4);
|
|
}
|
|
|
|
static inline void io_apic_write(unsigned int apic, unsigned int reg, unsigned int value)
|
|
{
|
|
*IO_APIC_BASE(apic) = reg;
|
|
*(IO_APIC_BASE(apic)+4) = value;
|
|
}
|
|
|
|
/*
|
|
* Re-write a value: to be used for read-modify-write
|
|
* cycles where the read already set up the index register.
|
|
*
|
|
* Older SiS APIC requires we rewrite the index regiser
|
|
*/
|
|
extern int sis_apic_bug;
|
|
static inline void io_apic_modify(unsigned int apic, unsigned int reg, unsigned int value)
|
|
{
|
|
if (sis_apic_bug)
|
|
*IO_APIC_BASE(apic) = reg;
|
|
*(IO_APIC_BASE(apic)+4) = value;
|
|
}
|
|
|
|
/* 1 if "noapic" boot option passed */
|
|
extern int skip_ioapic_setup;
|
|
|
|
/*
|
|
* If we use the IO-APIC for IRQ routing, disable automatic
|
|
* assignment of PCI IRQ's.
|
|
*/
|
|
#define io_apic_assign_pci_irqs (mp_irq_entries && !skip_ioapic_setup && io_apic_irqs)
|
|
|
|
#ifdef CONFIG_ACPI
|
|
extern int io_apic_get_unique_id (int ioapic, int apic_id);
|
|
extern int io_apic_get_version (int ioapic);
|
|
extern int io_apic_get_redir_entries (int ioapic);
|
|
extern int io_apic_set_pci_routing (int ioapic, int pin, int irq, int edge_level, int active_high_low);
|
|
#endif /* CONFIG_ACPI */
|
|
|
|
extern int (*ioapic_renumber_irq)(int ioapic, int irq);
|
|
|
|
#else /* !CONFIG_X86_IO_APIC */
|
|
#define io_apic_assign_pci_irqs 0
|
|
#endif
|
|
|
|
extern int assign_irq_vector(int irq);
|
|
|
|
#endif
|