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typedef struct Conf Conf;
typedef struct Confmem Confmem;
typedef struct FPsave FPsave;
typedef struct KMap KMap;
typedef struct Lance Lance;
typedef struct Lancemem Lancemem;
typedef struct Label Label;
typedef struct Lock Lock;
typedef struct Mach Mach;
typedef struct MMU MMU;
typedef struct Notsave Notsave;
typedef struct Pcidev Pcidev;
typedef struct PMMU PMMU;
typedef struct Softtlb Softtlb;
typedef struct Ureg Ureg;
typedef struct Proc Proc;
typedef uvlong Tval;
#pragma incomplete Pcidev
#define MAXSYSARG 5 /* for mount(fd, afd, mpt, flag, arg) */
/*
* parameters for sysproc.c and rebootcmd.c
*/
#define AOUT_MAGIC V_MAGIC || magic==M_MAGIC
/* r3k or r4k boot images */
#define BOOT_MAGIC (0x160<<16) || magic == ((0x160<<16)|3)
/*
* machine dependent definitions used by ../port/dat.h
*/
struct Lock
{
ulong key; /* semaphore (non-zero = locked) */
ulong sr;
ulong pc;
Proc *p;
Mach *m;
ushort isilock;
};
struct Label
{
ulong sp;
ulong pc;
};
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 */
ulong ialloc; /* bytes available for interrupt-time allocation */
ulong pipeqsize; /* size in bytes of pipe queues */
int nuart; /* number of uart devices */
};
/*
* floating point registers
*/
enum
{
/* floating point state */
FPinit,
FPactive,
FPinactive,
FPemu,
/* bit meaning floating point illegal */
FPillegal= 0x100,
};
enum {
Nfpregs = 32, /* floats; half as many doubles */
};
/*
* emulated floating point (mips32r2 with ieee fp regs)
* fpstate is separate, kept in Proc
*/
struct FPsave
{
/* /dev/proc expects the registers to be first in FPsave */
ulong reg[Nfpregs]; /* the canonical bits */
union {
ulong fpstatus; /* both are fcr31 */
ulong fpcontrol;
};
int fpdelayexec; /* executing delay slot of branch */
uintptr fpdelaypc; /* pc to resume at after */
ulong fpdelaysts; /* save across user-mode delay-slot execution */
/* stuck-fault detection */
uintptr fppc; /* addr of last fault */
int fpcnt; /* how many consecutive at that addr */
};
int fpemudebug;
/*
* mmu goo in the Proc structure
*/
struct PMMU
{
int pidonmach[MAXMACH];
};
/*
* things saved in the Proc structure during a notify
*/
struct Notsave
{
ulong nonempty;
};
#include "../port/portdat.h"
/* First FIVE members' offsets known by l.s */
struct Mach
{
/* the following are all known by l.s and cannot be moved */
int machno; /* physical id of processor FIRST */
Softtlb*stb; /* Software tlb simulation SECOND */
Proc* proc; /* process on this processor THIRD */
ulong splpc; /* pc that called splhi() FOURTH */
ulong tlbfault; /* # of tlb faults FIFTH */
ulong ktlbfault;
ulong utlbfault;
/* the following is safe to move */
ulong tlbpurge;
ulong ticks; /* of the clock since boot time */
Label sched; /* scheduler wakeup */
void* alarm; /* alarms bound to this clock */
int lastpid; /* last pid allocated on this machine */
Proc* pidproc[NTLBPID]; /* proc that owns tlbpid on this mach */
KMap* kactive; /* active on this machine */
int knext;
uchar ktlbx[NTLB]; /* tlb index used for kmap */
uchar ktlbnext;
int speed; /* cpu speed */
ulong delayloop; /* for the delay() routine */
ulong fairness; /* for runproc */
int flushmmu;
int inclockintr;
int ilockdepth;
Perf perf; /* performance counters */
uvlong cyclefreq; /* Frequency of user readable cycle counter */
/* for per-processor timers */
ulong lastcount;
uvlong fastticks;
ulong hz;
ulong maxperiod;
ulong minperiod;
Proc* readied; /* for runproc */
ulong schedticks; /* next forced context switch */
int pfault;
int cs;
int syscall;
int load;
int intr;
int hashcoll; /* soft-tlb hash collisions */
int paststartup; /* for putktlb */
int stack[1];
};
struct KMap
{
Ref;
ulong virt;
ulong phys0;
ulong phys1;
KMap* next;
KMap* konmach[MAXMACH];
Page* pg;
ulong pc; /* of caller to kmap() */
};
#define VA(k) ((k)->virt)
#define PPN(x) ((ulong)(x)>>6)
/* offsets known by l.s */
struct Softtlb
{
ulong virt;
ulong phys0;
ulong phys1;
};
struct
{
Lock;
long machs; /* bitmap of processors */
short exiting;
int ispanic;
}active;
extern KMap kpte[];
extern register Mach *m;
extern register Proc *up;
extern FPsave initfp;
extern int normalprint;