include/asm-i386/mpspec.h

   1 #ifndef __ASM_MPSPEC_H
   2 #define __ASM_MPSPEC_H
   3
   4 /*
   5  * Structure definitions for SMP machines following the
   6  * Intel Multiprocessing Specification 1.1 and 1.4.
   7  */
   8
   9 /*
  10  * This tag identifies where the SMP configuration
  11  * information is.
  12  */
  13
  14 #define SMP_MAGIC_IDENT (('_'<<24)|('P'<<16)|('M'<<8)|'_')
  15
  16 /*
  17  * a maximum of 16 APICs with the current APIC ID architecture.
  18  */
  19 #define MAX_APICS 16
  20
  21 struct intel_mp_floating
  22 {
  23         char mpf_signature[4];          /* "_MP_"                       */
  24         unsigned long mpf_physptr;      /* Configuration table address  */
  25         unsigned char mpf_length;       /* Our length (paragraphs)      */
  26         unsigned char mpf_specification;/* Specification version        */
  27         unsigned char mpf_checksum;     /* Checksum (makes sum 0)       */
  28         unsigned char mpf_feature1;     /* Standard or configuration ?  */
  29         unsigned char mpf_feature2;     /* Bit7 set for IMCR|PIC        */
  30         unsigned char mpf_feature3;     /* Unused (0)                   */
  31         unsigned char mpf_feature4;     /* Unused (0)                   */
  32         unsigned char mpf_feature5;     /* Unused (0)                   */
  33 };
  34
  35 struct mp_config_table
  36 {
  37         char mpc_signature[4];
  38 #define MPC_SIGNATURE "PCMP"
  39         unsigned short mpc_length;      /* Size of table */
  40         char  mpc_spec;                 /* 0x01 */
  41         char  mpc_checksum;
  42         char  mpc_oem[8];
  43         char  mpc_productid[12];
  44         unsigned long mpc_oemptr;       /* 0 if not present */
  45         unsigned short mpc_oemsize;     /* 0 if not present */
  46         unsigned short mpc_oemcount;
  47         unsigned long mpc_lapic;        /* APIC address */
  48         unsigned long reserved;
  49 };
  50
  51 /* Followed by entries */
  52
  53 #define MP_PROCESSOR    0
  54 #define MP_BUS          1
  55 #define MP_IOAPIC       2
  56 #define MP_INTSRC       3
  57 #define MP_LINTSRC      4
  58
  59 struct mpc_config_processor
  60 {
  61         unsigned char mpc_type;
  62         unsigned char mpc_apicid;       /* Local APIC number */
  63         unsigned char mpc_apicver;      /* Its versions */
  64         unsigned char mpc_cpuflag;
  65 #define CPU_ENABLED             1       /* Processor is available */
  66 #define CPU_BOOTPROCESSOR       2       /* Processor is the BP */
  67         unsigned long mpc_cpufeature;
  68 #define CPU_STEPPING_MASK 0x0F
  69 #define CPU_MODEL_MASK  0xF0
  70 #define CPU_FAMILY_MASK 0xF00
  71         unsigned long mpc_featureflag;  /* CPUID feature value */
  72         unsigned long mpc_reserved[2];
  73 };
  74
  75 struct mpc_config_bus
  76 {
  77         unsigned char mpc_type;
  78         unsigned char mpc_busid;
  79         unsigned char mpc_bustype[6] __attribute((packed));
  80 };
  81
  82 /* List of Bus Type string values, Intel MP Spec. */
  83 #define BUSTYPE_EISA    "EISA"
  84 #define BUSTYPE_ISA     "ISA"
  85 #define BUSTYPE_INTERN  "INTERN"        /* Internal BUS */
  86 #define BUSTYPE_MCA     "MCA"
  87 #define BUSTYPE_VL      "VL"            /* Local bus */
  88 #define BUSTYPE_PCI     "PCI"
  89 #define BUSTYPE_PCMCIA  "PCMCIA"
  90 #define BUSTYPE_CBUS    "CBUS"
  91 #define BUSTYPE_CBUSII  "CBUSII"
  92 #define BUSTYPE_FUTURE  "FUTURE"
  93 #define BUSTYPE_MBI     "MBI"
  94 #define BUSTYPE_MBII    "MBII"
  95 #define BUSTYPE_MPI     "MPI"
  96 #define BUSTYPE_MPSA    "MPSA"
  97 #define BUSTYPE_NUBUS   "NUBUS"
  98 #define BUSTYPE_TC      "TC"
  99 #define BUSTYPE_VME     "VME"
 100 #define BUSTYPE_XPRESS  "XPRESS"
 101
 102 struct mpc_config_ioapic
 103 {
 104         unsigned char mpc_type;
 105         unsigned char mpc_apicid;
 106         unsigned char mpc_apicver;
 107         unsigned char mpc_flags;
 108 #define MPC_APIC_USABLE         0x01
 109         unsigned long mpc_apicaddr;
 110 };
 111
 112 struct mpc_config_intsrc
 113 {
 114         unsigned char mpc_type;
 115         unsigned char mpc_irqtype;
 116         unsigned short mpc_irqflag;
 117         unsigned char mpc_srcbus;
 118         unsigned char mpc_srcbusirq;
 119         unsigned char mpc_dstapic;
 120         unsigned char mpc_dstirq;
 121 };
 122
 123 enum mp_irq_source_types {
 124         mp_INT = 0,
 125         mp_NMI = 1,
 126         mp_SMI = 2,
 127         mp_ExtINT = 3
 128 };
 129
 130 #define MP_IRQDIR_DEFAULT       0
 131 #define MP_IRQDIR_HIGH          1
 132 #define MP_IRQDIR_LOW           3
 133
 134
 135 struct mpc_config_lintsrc
 136 {
 137         unsigned char mpc_type;
 138         unsigned char mpc_irqtype;
 139         unsigned short mpc_irqflag;
 140         unsigned char mpc_srcbusid;
 141         unsigned char mpc_srcbusirq;
 142         unsigned char mpc_destapic;
 143 #define MP_APIC_ALL     0xFF
 144         unsigned char mpc_destapiclint;
 145 };
 146
 147 /*
 148  *      Default configurations
 149  *
 150  *      1       2 CPU ISA 82489DX
 151  *      2       2 CPU EISA 82489DX neither IRQ 0 timer nor IRQ 13 DMA chaining
 152  *      3       2 CPU EISA 82489DX
 153  *      4       2 CPU MCA 82489DX
 154  *      5       2 CPU ISA+PCI
 155  *      6       2 CPU EISA+PCI
 156  *      7       2 CPU MCA+PCI
 157  */
 158
 159 #define MAX_IRQ_SOURCES 128
 160 #define MAX_MP_BUSSES 32
 161 enum mp_bustype {
 162         MP_BUS_ISA = 1,
 163         MP_BUS_EISA,
 164         MP_BUS_PCI,
 165         MP_BUS_MCA
 166 };
 167 extern int mp_bus_id_to_type [MAX_MP_BUSSES];
 168 extern int mp_bus_id_to_pci_bus [MAX_MP_BUSSES];
 169
 170 extern unsigned int boot_cpu_id;
 171 extern unsigned long phys_cpu_present_map;
 172 extern int smp_found_config;
 173 extern void find_smp_config (void);
 174 extern void get_smp_config (void);
 175 extern int nr_ioapics;
 176 extern int apic_version [MAX_APICS];
 177 extern int mp_bus_id_to_type [MAX_MP_BUSSES];
 178 extern int mp_irq_entries;
 179 extern struct mpc_config_intsrc mp_irqs [MAX_IRQ_SOURCES];
 180 extern int mpc_default_type;
 181 extern int mp_bus_id_to_pci_bus [MAX_MP_BUSSES];
 182 extern int mp_current_pci_id;
 183 extern unsigned long mp_lapic_addr;
 184 extern int pic_mode;
 185
 186 #endif
 187