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typedef struct Conf Conf;
typedef struct Confmem Confmem;
typedef struct FPsave FPsave;
typedef struct ISAConf ISAConf;
typedef struct Label Label;
typedef struct Lock Lock;
typedef struct Mach Mach;
typedef struct Notsave Notsave;
typedef struct Page Page;
typedef struct PCArch PCArch;
typedef struct Pcidev Pcidev;
typedef struct PMMU PMMU;
typedef struct Proc Proc;
typedef struct Sys Sys;
typedef struct Ureg Ureg;
typedef struct Vctl Vctl;
typedef long Tval;
#pragma incomplete Ureg
#define MAXSYSARG 5 /* for mount(fd, mpt, flag, arg, srv) */
/*
* parameters for sysproc.c
*/
#define AOUT_MAGIC Q_MAGIC
/*
* machine dependent definitions used by ../port/dat.h
*/
struct Lock
{
ulong key;
ulong sr;
ulong pc;
Proc *p;
Mach *m;
ushort isilock;
};
struct Label
{
ulong sp;
ulong pc;
};
/*
* Proc.fpstate
*/
enum
{
FPinit,
FPactive,
FPinactive,
};
/*
* This structure must agree with fpsave and fprestore asm routines
*/
struct FPsave
{
double fpreg[32];
union {
double fpscrd;
struct {
ulong pad;
ulong fpscr;
};
};
};
struct Confmem
{
ulong base;
ulong npage;
ulong kbase;
ulong klimit;
};
struct Conf
{
ulong nmach; /* processors */
ulong nproc; /* processes */
Confmem mem[1];
ulong npage; /* total physical pages of memory */
ulong upages; /* user page pool */
ulong nimage; /* number of page cache image headers */
ulong nswap; /* number of swap pages */
int nswppo; /* max # of pageouts per segment pass */
ulong copymode; /* 0 is copy on write, 1 is copy on reference */
int monitor; /* has display? */
ulong ialloc; /* bytes available for interrupt time allocation */
ulong pipeqsize; /* size in bytes of pipe queues */
};
/*
* mmu goo in the Proc structure
*/
#define NCOLOR 1
struct PMMU
{
int mmupid;
};
/*
* things saved in the Proc structure during a notify
*/
struct Notsave
{
ulong UNUSED;
};
#include "../port/portdat.h"
/*
* machine dependent definitions not used by ../port/dat.h
*/
/*
* Fake kmap
*/
typedef void KMap;
#define VA(k) ((ulong)(k))
#define kmap(p) (KMap*)((p)->pa|KZERO)
#define kunmap(k)
struct Mach
{
/* OFFSETS OF THE FOLLOWING KNOWN BY l.s */
int machno; /* physical id of processor */
ulong splpc; /* pc that called splhi() */
Proc *proc; /* current process on this processor */
/* ordering from here on irrelevant */
ulong ticks; /* of the clock since boot time */
Label sched; /* scheduler wakeup */
Lock alarmlock; /* access to alarm list */
void *alarm; /* alarms bound to this clock */
int inclockintr;
int cputype;
ulong loopconst;
Proc* readied; /* for runproc */
ulong schedticks; /* next forced context switch */
vlong cpuhz;
ulong bushz;
ulong dechz;
ulong tbhz;
uvlong cyclefreq; /* Frequency of user readable cycle counter */
ulong pcclast;
uvlong fastclock;
Perf perf; /* performance counters */
int tlbfault; /* only used by devproc; no access to tlb */
int tlbpurge; /* ... */
int pfault;
int cs;
int syscall;
int load;
int intr;
int flushmmu; /* make current proc flush it's mmu state */
int ilockdepth;
ulong ptabbase; /* start of page table in kernel virtual space */
int slotgen; /* next pte (byte offset) when pteg is full */
int mmupid; /* next mmu pid to use */
int sweepcolor;
int trigcolor;
Rendez sweepr;
ulong spuriousintr;
int lastintr;
/* MUST BE LAST */
int stack[1];
};
struct
{
Lock;
char machs[MAXMACH];
int exiting;
}active;
/*
* 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];
};
#define MACHP(n) ((Mach *)((int)&mach0+n*BY2PG))
extern Mach mach0;
extern register Mach *m;
extern register Proc *up;
extern FPsave initfp;
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