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typedef struct Conf Conf;
typedef struct FPU FPU;
typedef struct FPenv FPenv;
typedef ulong Instr;
typedef struct ISAConf ISAConf;
typedef struct Label Label;
typedef struct Lock Lock;
typedef struct MMU MMU;
typedef struct Mach Mach;
typedef struct Notsave Notsave;
typedef struct PCArch PCArch;
typedef struct Pcidev Pcidev;
typedef struct PCMmap PCMmap;
typedef struct PCMslot PCMslot;
typedef struct Page Page;
typedef struct PMMU PMMU;
typedef struct Segdesc Segdesc;
typedef struct Ureg Ureg;
typedef struct Vctl Vctl;
#pragma incomplete Ureg
#pragma incomplete Vctl
struct Lock
{
ulong key;
ulong sr;
ulong pc;
ulong pri;
};
struct Label
{
ulong sp;
ulong pc;
};
/*
* FPenv.status
*/
enum
{
FPINIT,
FPACTIVE,
FPINACTIVE,
};
/*
* This structure must agree with FPsave and FPrestore asm routines
*/
struct FPenv
{
ushort control;
ushort r1;
ushort status;
ushort r2;
ushort tag;
ushort r3;
ulong pc;
ushort selector;
ushort r4;
ulong operand;
ushort oselector;
ushort r5;
};
/*
* This structure must agree with fpsave and fprestore asm routines
*/
struct FPU
{
FPenv env;
uchar regs[80]; /* floating point registers */
};
struct Conf
{
ulong nmach; /* processors */
ulong nproc; /* processes */
ulong monitor; /* has monitor? */
ulong npage0; /* total physical pages of memory */
ulong npage1; /* total physical pages of memory */
ulong npage; /* total physical pages of memory */
ulong base0; /* base of bank 0 */
ulong base1; /* base of bank 1 */
ulong copymode; /* 0 is copy on write, 1 is copy on reference */
ulong ialloc; /* max interrupt time allocation in bytes */
ulong pipeqsize; /* size in bytes of pipe queues */
int nuart; /* number of uart devices */
};
#include "../port/portdat.h"
typedef struct {
ulong link; /* link (old TSS selector) */
ulong esp0; /* privilege level 0 stack pointer */
ulong ss0; /* privilege level 0 stack selector */
ulong esp1; /* privilege level 1 stack pointer */
ulong ss1; /* privilege level 1 stack selector */
ulong esp2; /* privilege level 2 stack pointer */
ulong ss2; /* privilege level 2 stack selector */
ulong cr3; /* page directory base register */
ulong eip; /* instruction pointer */
ulong eflags; /* flags register */
ulong eax; /* general registers */
ulong ecx;
ulong edx;
ulong ebx;
ulong esp;
ulong ebp;
ulong esi;
ulong edi;
ulong es; /* segment selectors */
ulong cs;
ulong ss;
ulong ds;
ulong fs;
ulong gs;
ulong ldt; /* selector for task's LDT */
ulong iomap; /* I/O map base address + T-bit */
} Tss;
struct Segdesc
{
ulong d0;
ulong d1;
};
struct Mach
{
int machno; /* physical id of processor (KNOWN TO ASSEMBLY) */
ulong splpc; /* pc of last caller to splhi */
ulong* pdb; /* page directory base for this processor (va) */
Tss* tss; /* tss for this processor */
Segdesc *gdt; /* gdt for this processor */
Proc* externup; /* extern register Proc *up */
ulong ticks; /* of the clock since boot time */
Proc* proc; /* current process on this processor */
Label sched; /* scheduler wakeup */
Lock alarmlock; /* access to alarm list */
void* alarm; /* alarms bound to this clock */
int inclockintr;
int nrdy;
int ilockdepth;
int loopconst;
Lock apictimerlock;
int cpumhz;
uvlong cyclefreq; /* Frequency of user readable cycle counter */
uvlong cpuhz;
int cpuidax;
int cpuiddx;
char cpuidid[16];
char* cpuidtype;
int havetsc;
int havepge;
uvlong tscticks;
uvlong tscoff;
int intr;
ulong spuriousintr;
int lastintr;
vlong mtrrcap;
vlong mtrrdef;
vlong mtrrfix[11];
vlong mtrrvar[32]; /* 256 max. */
int stack[1];
};
struct
{
Lock;
int machs; /* bitmap of active CPUs */
int exiting; /* shutdown */
int ispanic; /* shutdown in response to a panic */
int thunderbirdsarego; /* lets the added processors continue to schedinit */
}active;
/*
* routines for things outside the PC model, like power management
*/
struct PCArch
{
char* id;
int (*ident)(void); /* this should be in the model */
void (*reset)(void); /* this should be in the model */
int (*serialpower)(int); /* 1 == on, 0 == off */
int (*modempower)(int); /* 1 == on, 0 == off */
void (*intrinit)(void);
int (*intrenable)(Vctl*);
int (*intrvecno)(int);
int (*intrdisable)(int);
void (*clockenable)(void);
uvlong (*fastclock)(uvlong*);
void (*timerset)(uvlong);
};
/*
* a parsed plan9.ini line
*/
#define NISAOPT 8
struct ISAConf {
char *type;
ulong port;
int irq;
ulong dma;
ulong mem;
ulong size;
ulong freq;
int nopt;
char *opt[NISAOPT];
};
extern PCArch *arch; /* PC architecture */
/*
* Each processor sees its own Mach structure at address MACHADDR.
* However, the Mach structures must also be available via the per-processor
* MMU information array machp, mainly for disambiguation and access to
* the clock which is only maintained by the bootstrap processor (0).
*/
Mach* machp[MAXMACH];
#define MACHP(n) (machp[n])
extern Mach *m;
//extern Proc *up;
#define up (((Mach*)MACHADDR)->externup)
extern int swcursor;
/*
* hardware info about a device
*/
typedef struct {
ulong port;
int size;
} Devport;
struct DevConf
{
ulong intnum; /* interrupt number */
char *type; /* card type, malloced */
int nports; /* Number of ports */
Devport *ports; /* The ports themselves */
};
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