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/*
* Copyright (c) 1994 The University of Utah and
* the Computer Systems Laboratory at the University of Utah (CSL).
* All rights reserved.
*
* Permission to use, copy, modify and distribute this software is hereby
* granted provided that (1) source code retains these copyright, permission,
* and disclaimer notices, and (2) redistributions including binaries
* reproduce the notices in supporting documentation, and (3) all advertising
* materials mentioning features or use of this software display the following
* acknowledgement: ``This product includes software developed by the
* Computer Systems Laboratory at the University of Utah.''
*
* THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
* IS" CONDITION. THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF
* ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* CSL requests users of this software to return to csl-dist@cs.utah.edu any
* improvements that they make and grant CSL redistribution rights.
*
* Author: Bryan Ford, University of Utah CSL
*/
#ifndef _IMPS_APIC_
#define _IMPS_APIC_
#ifndef __ASSEMBLER__
#include <stdint.h>
typedef struct ApicReg
{
unsigned r; /* the actual register */
unsigned p[3]; /* pad to the next 128-bit boundary */
} ApicReg;
typedef struct ApicIoUnit
{
ApicReg select;
ApicReg window;
} ApicIoUnit;
struct ioapic {
uint8_t apic_id;
uint32_t addr;
uint32_t base;
};
extern int nioapic;
extern struct ioapic ioapics[16];
typedef struct ApicLocalUnit
{
/* 0x000 */
ApicReg reserved0;
/* 0x010 */
ApicReg reserved1;
/* 0x020 */
ApicReg apic_id;
/* 0x030 */
ApicReg version;
/* 0x040 */
ApicReg reserved4;
/* 0x050 */
ApicReg reserved5;
/* 0x060 */
ApicReg reserved6;
/* 0x070 */
ApicReg reserved7;
/* 0x080 */
ApicReg task_pri;
/* 0x090 */
ApicReg arbitration_pri;
/* 0x0a0 */
ApicReg processor_pri;
/* 0x0b0 */
ApicReg eoi;
/* 0x0c0 */
ApicReg remote;
/* 0x0d0 */
ApicReg logical_dest;
/* 0x0e0 */
ApicReg dest_format;
/* 0x0f0 */
ApicReg spurious_vector;
/* 0x100 */
ApicReg isr[8];
/* 0x180 */
ApicReg tmr[8];
/* 0x200 */
ApicReg irr[8];
/* 0x280 */
ApicReg error_status;
/* 0x290 */
ApicReg reserved28[6];
/* 0x2f0 */
ApicReg lvt_cmci;
/* 0x300 */
ApicReg icr_low;
/* 0x310 */
ApicReg icr_high;
/* 0x320 */
ApicReg lvt_timer;
/* 0x330 */
ApicReg lvt_thermal;
/* 0x340 */
ApicReg lvt_performance_monitor;
/* 0x350 */
ApicReg lvt_lint0;
/* 0x360 */
ApicReg lvt_lint1;
/* 0x370 */
ApicReg lvt_error;
/* 0x380 */
ApicReg init_count;
/* 0x390 */
ApicReg cur_count;
/* 0x3a0 */
ApicReg reserved3a;
/* 0x3b0 */
ApicReg reserved3b;
/* 0x3c0 */
ApicReg reserved3c;
/* 0x3d0 */
ApicReg reserved3d;
/* 0x3e0 */
ApicReg divider_config;
/* 0x3f0 */
ApicReg reserved3f;
} ApicLocalUnit;
extern volatile ApicLocalUnit* lapic;
#endif
#define APIC_IO_UNIT_ID 0x00
#define APIC_IO_VERSION 0x01
#define APIC_IO_REDIR_LOW(int_pin) (0x10+(int_pin)*2)
#define APIC_IO_REDIR_HIGH(int_pin) (0x11+(int_pin)*2)
/* Address at which the local unit is mapped in kernel virtual memory.
* Must be constant.
* TODO: Get real address from ACPI tables
*/
#define APIC_LOCAL_VA lapic
#define apic_local_unit (*((volatile ApicLocalUnit*)APIC_LOCAL_VA))
/* Set or clear a bit in a 255-bit APIC mask register.
These registers are spread through eight 32-bit registers. */
#define APIC_SET_MASK_BIT(reg, bit) \
((reg)[(bit) >> 5].r |= 1 << ((bit) & 0x1f))
#define APIC_CLEAR_MASK_BIT(reg, bit) \
((reg)[(bit) >> 5].r &= ~(1 << ((bit) & 0x1f)))
#endif /*_IMPS_APIC_*/
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