/*
 * Copyright 2008, Dustin Howett, dustin.howett@gmail.com. All rights reserved.
 * Copyright 2005, Axel Dörfler, axeld@pinc-software.de. All rights reserved.
 * Distributed under the terms of the MIT License.
 *
 * Copyright 2001-2002, Travis Geiselbrecht. All rights reserved.
 * Distributed under the terms of the NewOS License.
 */
#ifndef _KERNEL_ARCH_x86_ARCH_SMP_H
#define _KERNEL_ARCH_x86_ARCH_SMP_H

#define MP_FLOATING_SIGNATURE                   '_PM_'
#define MP_CONFIG_TABLE_SIGNATURE               'PCMP'

/*
#define IPI_CACHE_FLUSH                 0x40
#define IPI_INV_TLB                             0x41
#define IPI_INV_PTE                             0x42
#define IPI_INV_RESCHED                 0x43
#define IPI_STOP                                0x44
*/

struct mp_config_table {
        uint32  signature;                      /* "PCMP" */
        uint16  base_table_length;      /* length of the base table entries and this structure */
        uint8   spec_revision;          /* spec supported, 1 for 1.1 or 4 for 1.4 */
        uint8   checksum;                       /* checksum, all bytes add up to zero */
        char    oem[8];                         /* oem identification, not null-terminated */
        char    product[12];            /* product name, not null-terminated */
        void    *oem_table;                     /* addr of oem-defined table, zero if none */
        uint16  oem_length;                     /* length of oem table */
        uint16  num_base_entries;       /* number of entries in base table */
        uint32  apic;                           /* address of apic */
        uint16  ext_length;                     /* length of extended section */
        uint8   ext_checksum;           /* checksum of extended table entries */
        uint8   reserved;
};

struct mp_floating_struct {
        uint32  signature;                      /* "_MP_" */
        struct mp_config_table *config_table; /* address of mp configuration table */
        uint8   config_length;          /* length of the table in 16-byte units */
        uint8   spec_revision;          /* spec supported, 1 for 1.1 or 4 for 1.4 */
        uint8   checksum;                       /* checksum, all bytes add up to zero */
        uint8   mp_feature_1;           /* mp system configuration type if no mpc */
        uint8   mp_feature_2;           /* imcrp */
        uint8   mp_feature_3, mp_feature_4, mp_feature_5; /* reserved */
};

/* base config entry types */
enum {
        MP_BASE_PROCESSOR = 0,
        MP_BASE_BUS,
        MP_BASE_IO_APIC,
        MP_BASE_IO_INTR,
        MP_BASE_LOCAL_INTR,
};

struct mp_base_processor {
        uint8   type;
        uint8   apic_id;
        uint8   apic_version;
        uint8   cpu_flags;
        uint32  signature;                      /* stepping, model, family, each four bits */
        uint32  feature_flags;
        uint32  res1, res2;
};

struct mp_base_ioapic {
        uint8   type;
        uint8   ioapic_id;
        uint8   ioapic_version;
        uint8   ioapic_flags;
        uint32  *addr;
};

struct mp_base_bus {
        uint8   type;
        uint8   bus_id;
        char    name[6];
};

struct mp_base_interrupt {
        uint8   type;
        uint8   interrupt_type;
        uint16  polarity : 2;
        uint16  trigger_mode : 2;
        uint16  _reserved : 12;
        uint8   source_bus_id;
        uint8   source_bus_irq;
        uint8   dest_apic_id;
        uint8   dest_apic_int;
};

enum {
        MP_INTR_TYPE_INT = 0,
        MP_INTR_TYPE_NMI,
        MP_INTR_TYPE_SMI,
        MP_INTR_TYPE_ExtINT,
};


#ifdef __cplusplus
extern "C" {
#endif


uint32 x86_get_cpu_apic_id(int32 cpu);


#ifdef __cplusplus
}
#endif


#endif  /* _KERNEL_ARCH_x86_ARCH_SMP_H */