462 lines
12 KiB
C
462 lines
12 KiB
C
/*
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* Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com>
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*
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* Adapted from coreboot src/arch/x86/include/arch/smp/mpspec.h
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#ifndef __ASM_MPSPEC_H
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#define __ASM_MPSPEC_H
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/*
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* Structure definitions for SMP machines following the
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* Intel MultiProcessor Specification 1.4
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*/
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#define MPSPEC_V14 4
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#define MPF_SIGNATURE "_MP_"
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struct mp_floating_table {
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char mpf_signature[4]; /* "_MP_" */
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u32 mpf_physptr; /* Configuration table address */
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u8 mpf_length; /* Our length (paragraphs) */
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u8 mpf_spec; /* Specification version */
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u8 mpf_checksum; /* Checksum (makes sum 0) */
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u8 mpf_feature1; /* Predefined or Unique configuration? */
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u8 mpf_feature2; /* Bit7 set for IMCR/PIC */
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u8 mpf_feature3; /* Unused (0) */
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u8 mpf_feature4; /* Unused (0) */
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u8 mpf_feature5; /* Unused (0) */
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};
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#define MPC_SIGNATURE "PCMP"
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struct mp_config_table {
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char mpc_signature[4]; /* "PCMP" */
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u16 mpc_length; /* Size of table */
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u8 mpc_spec; /* Specification version */
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u8 mpc_checksum; /* Checksum (makes sum 0) */
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char mpc_oem[8]; /* OEM ID */
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char mpc_product[12]; /* Product ID */
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u32 mpc_oemptr; /* OEM table address */
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u16 mpc_oemsize; /* OEM table size */
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u16 mpc_entry_count; /* Number of entries in the table */
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u32 mpc_lapic; /* Local APIC address */
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u16 mpe_length; /* Extended table size */
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u8 mpe_checksum; /* Extended table checksum */
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u8 reserved;
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};
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/* Base MP configuration table entry types */
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enum mp_base_config_entry_type {
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MP_PROCESSOR,
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MP_BUS,
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MP_IOAPIC,
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MP_INTSRC,
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MP_LINTSRC
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};
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#define MPC_CPU_EN (1 << 0)
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#define MPC_CPU_BP (1 << 1)
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struct mpc_config_processor {
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u8 mpc_type;
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u8 mpc_apicid;
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u8 mpc_apicver;
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u8 mpc_cpuflag;
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u32 mpc_cpusignature;
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u32 mpc_cpufeature;
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u32 mpc_reserved[2];
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};
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#define BUSTYPE_CBUS "CBUS "
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#define BUSTYPE_CBUSII "CBUSII"
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#define BUSTYPE_EISA "EISA "
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#define BUSTYPE_FUTURE "FUTURE"
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#define BUSTYPE_INTERN "INTERN"
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#define BUSTYPE_ISA "ISA "
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#define BUSTYPE_MBI "MBI "
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#define BUSTYPE_MBII "MBII "
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#define BUSTYPE_MCA "MCA "
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#define BUSTYPE_MPI "MPI "
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#define BUSTYPE_MPSA "MPSA "
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#define BUSTYPE_NUBUS "NUBUS "
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#define BUSTYPE_PCI "PCI "
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#define BUSTYPE_PCMCIA "PCMCIA"
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#define BUSTYPE_TC "TC "
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#define BUSTYPE_VL "VL "
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#define BUSTYPE_VME "VME "
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#define BUSTYPE_XPRESS "XPRESS"
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struct mpc_config_bus {
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u8 mpc_type;
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u8 mpc_busid;
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u8 mpc_bustype[6];
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};
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#define MPC_APIC_USABLE (1 << 0)
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struct mpc_config_ioapic {
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u8 mpc_type;
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u8 mpc_apicid;
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u8 mpc_apicver;
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u8 mpc_flags;
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u32 mpc_apicaddr;
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};
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enum mp_irq_source_types {
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MP_INT,
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MP_NMI,
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MP_SMI,
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MP_EXTINT
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};
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#define MP_IRQ_POLARITY_DEFAULT 0x0
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#define MP_IRQ_POLARITY_HIGH 0x1
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#define MP_IRQ_POLARITY_LOW 0x3
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#define MP_IRQ_POLARITY_MASK 0x3
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#define MP_IRQ_TRIGGER_DEFAULT 0x0
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#define MP_IRQ_TRIGGER_EDGE 0x4
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#define MP_IRQ_TRIGGER_LEVEL 0xc
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#define MP_IRQ_TRIGGER_MASK 0xc
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#define MP_APIC_ALL 0xff
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struct mpc_config_intsrc {
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u8 mpc_type;
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u8 mpc_irqtype;
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u16 mpc_irqflag;
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u8 mpc_srcbus;
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u8 mpc_srcbusirq;
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u8 mpc_dstapic;
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u8 mpc_dstirq;
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};
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struct mpc_config_lintsrc {
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u8 mpc_type;
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u8 mpc_irqtype;
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u16 mpc_irqflag;
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u8 mpc_srcbusid;
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u8 mpc_srcbusirq;
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u8 mpc_destapic;
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u8 mpc_destlint;
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};
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/* Extended MP configuration table entry types */
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enum mp_ext_config_entry_type {
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MPE_SYSTEM_ADDRESS_SPACE = 128,
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MPE_BUS_HIERARCHY,
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MPE_COMPAT_ADDRESS_SPACE
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};
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struct mp_ext_config {
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u8 mpe_type;
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u8 mpe_length;
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};
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#define ADDRESS_TYPE_IO 0
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#define ADDRESS_TYPE_MEM 1
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#define ADDRESS_TYPE_PREFETCH 2
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struct mp_ext_system_address_space {
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u8 mpe_type;
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u8 mpe_length;
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u8 mpe_busid;
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u8 mpe_addr_type;
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u32 mpe_addr_base_low;
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u32 mpe_addr_base_high;
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u32 mpe_addr_length_low;
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u32 mpe_addr_length_high;
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};
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#define BUS_SUBTRACTIVE_DECODE (1 << 0)
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struct mp_ext_bus_hierarchy {
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u8 mpe_type;
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u8 mpe_length;
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u8 mpe_busid;
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u8 mpe_bus_info;
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u8 mpe_parent_busid;
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u8 reserved[3];
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};
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#define ADDRESS_RANGE_ADD 0
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#define ADDRESS_RANGE_SUBTRACT 1
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/*
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* X100 - X3FF
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* X500 - X7FF
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* X900 - XBFF
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* XD00 - XFFF
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*/
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#define RANGE_LIST_IO_ISA 0
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/*
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* X3B0 - X3BB
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* X3C0 - X3DF
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* X7B0 - X7BB
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* X7C0 - X7DF
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* XBB0 - XBBB
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* XBC0 - XBDF
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* XFB0 - XFBB
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* XFC0 - XCDF
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*/
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#define RANGE_LIST_IO_VGA 1
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struct mp_ext_compat_address_space {
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u8 mpe_type;
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u8 mpe_length;
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u8 mpe_busid;
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u8 mpe_addr_modifier;
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u32 mpe_range_list;
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};
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/**
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* mp_next_mpc_entry() - Compute MP configuration table end to be used as
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* next base table entry start address
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*
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* This computes the end address of current MP configuration table, without
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* counting any extended configuration table entry.
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*
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* @mc: configuration table header address
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* @return: configuration table end address
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*/
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static inline u32 mp_next_mpc_entry(struct mp_config_table *mc)
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{
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return (u32)mc + mc->mpc_length;
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}
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/**
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* mp_add_mpc_entry() - Add a base MP configuration table entry
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*
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* This adds the base MP configuration table entry size with
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* added base table entry length and increases entry count by 1.
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*
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* @mc: configuration table header address
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* @length: length of the added table entry
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*/
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static inline void mp_add_mpc_entry(struct mp_config_table *mc, uint length)
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{
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mc->mpc_length += length;
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mc->mpc_entry_count++;
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}
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/**
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* mp_next_mpe_entry() - Compute MP configuration table end to be used as
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* next extended table entry start address
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*
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* This computes the end address of current MP configuration table,
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* including any extended configuration table entry.
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*
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* @mc: configuration table header address
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* @return: configuration table end address
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*/
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static inline u32 mp_next_mpe_entry(struct mp_config_table *mc)
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{
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return (u32)mc + mc->mpc_length + mc->mpe_length;
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}
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/**
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* mp_add_mpe_entry() - Add an extended MP configuration table entry
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*
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* This adds the extended MP configuration table entry size with
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* added extended table entry length.
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*
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* @mc: configuration table header address
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* @mpe: extended table entry base address
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*/
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static inline void mp_add_mpe_entry(struct mp_config_table *mc,
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struct mp_ext_config *mpe)
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{
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mc->mpe_length += mpe->mpe_length;
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}
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/**
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* mp_write_floating_table() - Write the MP floating table
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*
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* This writes the MP floating table, and points MP configuration table
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* to its end address so that MP configuration table follows immediately
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* after the floating table.
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*
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* @mf: MP floating table base address
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* @return: MP configuration table header address
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*/
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struct mp_config_table *mp_write_floating_table(struct mp_floating_table *mf);
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/**
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* mp_config_table_init() - Initialize the MP configuration table header
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*
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* This populates the MP configuration table header with valid bits.
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*
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* @mc: MP configuration table header address
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*/
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void mp_config_table_init(struct mp_config_table *mc);
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/**
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* mp_write_processor() - Write a processor entry
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*
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* This writes a processor entry to the configuration table.
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*
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* @mc: MP configuration table header address
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*/
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void mp_write_processor(struct mp_config_table *mc);
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/**
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* mp_write_bus() - Write a bus entry
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*
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* This writes a bus entry to the configuration table.
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*
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* @mc: MP configuration table header address
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* @id: bus id
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* @bustype: bus type name
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*/
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void mp_write_bus(struct mp_config_table *mc, int id, const char *bustype);
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/**
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* mp_write_ioapic() - Write an I/O APIC entry
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*
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* This writes an I/O APIC entry to the configuration table.
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*
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* @mc: MP configuration table header address
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* @id: I/O APIC id
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* @ver: I/O APIC version
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* @apicaddr: I/O APIC address
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*/
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void mp_write_ioapic(struct mp_config_table *mc, int id, int ver, u32 apicaddr);
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/**
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* mp_write_intsrc() - Write an I/O interrupt assignment entry
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*
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* This writes an I/O interrupt assignment entry to the configuration table.
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*
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* @mc: MP configuration table header address
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* @irqtype: IRQ type (INT/NMI/SMI/ExtINT)
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* @irqflag: IRQ flag (level/trigger)
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* @srcbus: source bus id where the interrupt comes from
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* @srcbusirq: IRQ number mapped on the source bus
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* @dstapic: destination I/O APIC id where the interrupt goes to
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* @dstirq: destination I/O APIC pin where the interrupt goes to
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*/
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void mp_write_intsrc(struct mp_config_table *mc, int irqtype, int irqflag,
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int srcbus, int srcbusirq, int dstapic, int dstirq);
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/**
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* mp_write_pci_intsrc() - Write a PCI interrupt assignment entry
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*
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* This writes a PCI interrupt assignment entry to the configuration table.
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*
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* @mc: MP configuration table header address
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* @irqtype: IRQ type (INT/NMI/SMI/ExtINT)
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* @srcbus: PCI bus number where the interrupt comes from
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* @dev: device number on the PCI bus
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* @pin: PCI interrupt pin (INT A/B/C/D)
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* @dstapic: destination I/O APIC id where the interrupt goes to
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* @dstirq: destination I/O APIC pin where the interrupt goes to
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*/
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void mp_write_pci_intsrc(struct mp_config_table *mc, int irqtype,
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int srcbus, int dev, int pin, int dstapic, int dstirq);
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/**
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* mp_write_lintsrc() - Write a local interrupt assignment entry
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*
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* This writes a local interrupt assignment entry to the configuration table.
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*
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* @mc: MP configuration table header address
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* @irqtype: IRQ type (INT/NMI/SMI/ExtINT)
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* @irqflag: IRQ flag (level/trigger)
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* @srcbus: PCI bus number where the interrupt comes from
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* @srcbusirq: IRQ number mapped on the source bus
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* @dstapic: destination local APIC id where the interrupt goes to
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* @destlint: destination local APIC pin where the interrupt goes to
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*/
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void mp_write_lintsrc(struct mp_config_table *mc, int irqtype, int irqflag,
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int srcbus, int srcbusirq, int destapic, int destlint);
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/**
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* mp_write_address_space() - Write a system address space entry
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*
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* This writes a system address space entry to the configuration table.
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*
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* @mc: MP configuration table header address
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* @busid: bus id for the bus where system address space is mapped
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* @addr_type: system address type
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* @addr_base_low: starting address low
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* @addr_base_high: starting address high
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* @addr_length_low: address length low
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* @addr_length_high: address length high
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*/
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void mp_write_address_space(struct mp_config_table *mc,
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int busid, int addr_type,
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u32 addr_base_low, u32 addr_base_high,
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u32 addr_length_low, u32 addr_length_high);
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/**
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* mp_write_bus_hierarchy() - Write a bus hierarchy descriptor entry
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*
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* This writes a bus hierarchy descriptor entry to the configuration table.
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*
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* @mc: MP configuration table header address
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* @busid: bus id
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* @bus_info: bit0 indicates if the bus is a subtractive decode bus
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* @parent_busid: parent bus id
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*/
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void mp_write_bus_hierarchy(struct mp_config_table *mc,
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int busid, int bus_info, int parent_busid);
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/**
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* mp_write_compat_address_space() - Write a compat bus address space entry
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*
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* This writes a compatibility bus address space modifier entry to the
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* configuration table.
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*
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* @mc: MP configuration table header address
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* @busid: bus id
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* @addr_modifier: add or subtract to predefined address range list
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* @range_list: list of predefined address space ranges
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*/
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void mp_write_compat_address_space(struct mp_config_table *mc, int busid,
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int addr_modifier, u32 range_list);
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/**
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* mptable_finalize() - Finalize the MP table
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*
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* This finalizes the MP table by calculating required checksums.
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*
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* @mc: MP configuration table header address
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* @return: MP table end address
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*/
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u32 mptable_finalize(struct mp_config_table *mc);
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/**
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* mp_determine_pci_dstirq() - Determine PCI device's int pin on the I/O APIC
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*
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* This determines a PCI device's interrupt pin number on the I/O APIC.
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*
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* This can be implemented by platform codes to handle specifal cases, which
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* do not conform to the normal chipset/board design where PIRQ[A-H] are mapped
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* directly to I/O APIC INTPIN#16-23.
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*
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* @bus: bus number of the pci device
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* @dev: device number of the pci device
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* @func: function number of the pci device
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* @pirq: PIRQ number the PCI device's interrupt pin is routed to
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* @return: interrupt pin number on the I/O APIC
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*/
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int mp_determine_pci_dstirq(int bus, int dev, int func, int pirq);
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/**
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* write_mp_table() - Write MP table
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*
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* This writes MP table at a given address.
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*
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* @addr: start address to write MP table
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* @return: end address of MP table
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*/
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u32 write_mp_table(u32 addr);
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#endif /* __ASM_MPSPEC_H */
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