1991/0407/ss/dat.h (diff list | history)

ss/dat.h on 1990/1223
1990/1223		typedef struct Alarm Alarm; typedef struct Block Block; typedef struct Blist Blist; typedef struct Chan Chan; typedef struct Conf Conf; typedef struct Dev Dev; typedef struct Dirtab Dirtab; typedef struct Env Env; typedef struct Envp Envp; typedef struct Envval Envval;
1990/1231		typedef struct Etherpkt Etherpkt;
1990/1223		typedef struct FFrame FFrame; typedef struct FPsave FPsave; typedef struct KMap KMap;
1990/1231		typedef struct Lance Lance; typedef struct Lancemem Lancemem;
1990/1223		typedef struct Label Label; typedef struct List List; typedef struct Lock Lock; typedef struct MMU MMU; typedef struct MMUCache MMUCache; typedef struct Mach Mach; typedef struct Mount Mount; typedef struct Mtab Mtab;
1990/1231		typedef struct Noconv Noconv; typedef struct Nohdr Nohdr; typedef struct Noifc Noifc;
1990/1223		typedef struct Note Note;
1990/1231		typedef struct Nomsg Nomsg; typedef struct Nocall Nocall;
1990/1223		typedef struct Orig Orig; typedef struct PTE PTE; typedef struct Page Page; typedef struct Pgrp Pgrp; typedef struct Proc Proc; typedef struct Qinfo Qinfo; typedef struct QLock QLock; typedef struct Queue Queue; typedef struct Ref Ref; typedef struct Rendez Rendez; typedef struct Seg Seg; typedef struct Service Service; typedef struct Stream Stream; typedef struct Ureg Ureg; typedef struct User User; typedef int Devgen(Chan*, Dirtab*, int, int, Dir*); struct List { void *next; }; struct Lock {
1990/1226		ulong key;
1990/1223		ulong pc; }; struct Ref { Lock; int ref; }; struct QLock { Proc *head; /* next process waiting for object */ Proc *tail; /* last process waiting for object */ Lock use; /* to use object */ Lock queue; /* to access list */ }; struct Label { ulong sp; ulong pc; }; struct Alarm { List; Lock; int busy; long dt; /* may underflow in clock(); must be signed */ void (*f)(void*); void *arg; }; #define CHDIR 0x80000000L #define CHAPPEND 0x40000000L #define CHEXCL 0x20000000L struct Chan { QLock; /* general access */ Ref; union{ Chan *next; /* allocation */ ulong offset; /* in file */ }; ushort type; ushort dev; ushort mode; /* read/write */ ushort flag; Qid qid; Mount *mnt; /* mount point that derived Chan */ ulong mountid; int fid; /* for devmnt */ union { Stream *stream; /* for stream channels */ void *aux; Qid pgrpid; /* for #p/notepg */ }; Chan *mchan; /* channel to mounted server */ Qid mqid; /* qid of root of mount point */ }; struct FPsave {
1991/01151		long fsr; long fpreg[32+1]; /* +1 so we can double-align */
1990/1223		}; struct Conf { int nmach; /* processors */ int nproc; /* processes */ int npgrp; /* process groups */ ulong npage0; /* total physical pages of memory, bank 0 */ ulong npage1; /* total physical pages of memory, bank 1 */ ulong base0; /* base of bank 0 */ ulong base1; /* base of bank 1 */ ulong npage; /* total physical pages of memory */ ulong norig; /* origins */ ulong npte; /* contiguous page table entries */ ulong nmod; /* single (modifying) page table entries */ int nalarm; /* alarms */ int nchan; /* channels */ int nenv; /* distinct environment values */ int nenvchar; /* environment text storage */ int npgenv; /* environment files per process group */ int nmtab; /* mounted-upon channels per process group */ int nmount; /* mounts */ int nmntdev; /* mounted devices (devmnt.c) */ int nmntbuf; /* buffers for devmnt.c messages */ int nmnthdr; /* headers for devmnt.c messages */ int nstream; /* streams */ int nqueue; /* stream queues */ int nblock; /* stream blocks */ int nsrv; /* public servers (devsrv.c) */ int nbitmap; /* bitmap structs (devbit.c) */ int nbitbyte; /* bytes of bitmap data (devbit.c) */ int nfont; /* font structs (devbit.c) */
1990/1231		ulong nnoifc; /* number of nonet interfaces */ ulong nnoconv; /* number of nonet conversations/ifc */
1990/1223		int nurp; /* max urp conversations */ int nasync; /* number of async protocol modules */ int npipe; /* number of pipes */ int nservice; /* number of services */ int nfsyschan; /* number of filsys open channels */ ulong maxialloc; /* maximum bytes used by ialloc */ int copymode; /* 0 is copy on write, 1 is copy on reference */ }; struct Dev { void (*reset)(void); void (*init)(void); Chan *(*attach)(char*); Chan *(*clone)(Chan*, Chan*); int (*walk)(Chan*, char*); void (*stat)(Chan*, char*); Chan *(*open)(Chan*, int); void (*create)(Chan*, char*, int, ulong); void (*close)(Chan*); long (*read)(Chan*, void*, long); long (*write)(Chan*, void*, long); void (*remove)(Chan*); void (*wstat)(Chan*, char*); }; struct Dirtab { char name[NAMELEN]; Qid qid; long length; long perm; }; struct Env { Lock; Envval *val; char name[NAMELEN]; Env *next; /* in chain of Envs for a pgrp */ int pgref; /* # pgrps pointing here */ }; struct Envp { Env *env; int chref; /* # chans from pgrp pointing here */ }; struct KMap { KMap *next; ulong pa; ulong va; }; #define VA(k) ((k)->va) struct Mach { int machno; /* physical id of processor */ ulong splpc; /* pc of last caller to splhi */ int mmask; /* 1<<m->machno */ ulong ticks; /* of the clock since boot time */ Proc *proc; /* current process on this processor */ Proc *lproc; /* last process on this processor */ Label sched; /* scheduler wakeup */ Lock alarmlock; /* access to alarm list */ void *alarm; /* alarms bound to this clock */ int fpstate; /* state of fp registers on machine */
1991/0110		char pidhere[NTLBPID]; /* is this tlbpid possibly in this mmu? */
1990/1226		int lastpid; /* last pid allocated on this machine */
1991/0110		Proc *pidproc[NTLBPID]; /* process that owns this pid on this mach */
1990/1223		int stack[1]; }; struct Mount { Ref; /* also used as a lock when playing lists */ short term; /* terminates list */ ulong mountid; Mount *next; Chan *c; /* channel replacing underlying channel */ }; struct Mtab { Chan *c; /* channel mounted upon */ Mount *mnt; /* what's mounted upon it */ }; enum{ NUser, /* note provided externally */ NExit, /* process should exit */ NDebug, /* process should hang */ }; struct Note { char msg[ERRLEN]; int flag; /* whether system posted it */ }; struct Orig { Lock; Orig *next; /* for allocation */ ushort nproc; /* processes using it */ ushort npage; /* sum of refs of pages in it */ ushort flag; ulong va; /* va of 0th pte */ ulong npte; /* #pte's in list */ PTE *pte; Chan *chan; /* channel deriving segment (if open) */ ushort type; /* of channel (which could be non-open) */ Qid qid; Chan *mchan; Qid mqid; ulong minca; /* base of region in chan */ ulong maxca; /* end of region in chan */ }; struct Page { Orig *o; /* origin of segment owning page */ ulong va; /* virtual address */ ulong pa; /* physical address */ ushort ref; Page *next; Page *prev; }; struct Pgrp { Ref; /* also used as a lock when mounting */ Pgrp *next; int index; /* index in pgrp table */ ulong pgrpid; char user[NAMELEN]; int nmtab; /* highest active mount table entry, +1 */ int nenv; /* highest active env table entry, +1 */
1991/0212		QLock debug; /* single access via devproc.c */
1990/1223		Mtab *mtab; Envp *etab; }; struct PTE { Proc *proc; /* process owning this PTE (0 in Orig) */ PTE *nextmod; /* next at this va */ PTE *nextva; /* next in this proc at higher va */ Page *page; }; struct Rendez { Lock; Proc *p; }; struct Seg { Proc *proc; /* process owning this segment */ Orig *o; /* root list of pte's */ ulong minva; /* va of 0th pte (not necessarily Seg->o->va) */ ulong maxva; /* va of last pte */ PTE *mod; /* list of modified pte's */ ulong pad[3]; /**/ }; struct Proc { Label sched; Mach *mach; /* machine running this proc */ char text[NAMELEN]; Proc *rnext; /* next process in run queue */ Proc *qnext; /* next process on queue for a QLock */ int state; int spin; /* spinning instead of unscheduled */ Page *upage; /* BUG: should be unlinked from page list */ Seg seg[NSEG]; ulong bssend; /* initial top of bss seg */ ulong pid; int nchild; QLock wait; /* exiting children to be waited for */
1991/0109		Waitmsg waitmsg; /* this is large but must be addressable */
1990/1223		Proc *child; Proc *parent; Pgrp *pgrp; ulong parentpid; ulong time[6]; /* User, Sys, Real; child U, S, R */ short exiting; short insyscall; int fpstate; Lock debug; /* to access debugging elements of User */ Rendez *r; /* rendezvous point slept on */ Rendez sleep; /* place for tsleep and syssleep */ int wokeup; /* whether sleep was interrupted */ ulong pc; /* DEBUG only */ int kp; /* true if a kernel process */
1990/1226		int pidonmach[MAXMACH]; /* TLB pid on each mmu */
1991/0112		int nmmuseg; /* number of segments active in mmu */
1990/1223		}; struct MMU { ulong va; ulong pa; }; #define NMMU 16 struct MMUCache { ulong next; MMU mmu[NMMU]; }; #define NERR 15 #define NNOTE 5 #define NFD 100 struct User { Proc *p; int nerrlab; Label errlab[NERR]; char error[ERRLEN]; FPsave fpsave; /* address of this is known by vdb */ char elem[NAMELEN]; /* last name element from namec */ Chan *slash; Chan *dot; Chan *fd[NFD]; int maxfd; /* highest fd in use */ /* * Rest of structure controlled by devproc.c and friends. * lock(&p->debug) to modify. */ Note note[NNOTE]; short nnote; short notified; /* sysnoted is due */ int (*notify)(void*, char*); MMUCache mc; void *ureg; }; /* * operations available to a queue */ struct Qinfo { void (*iput)(Queue*, Block*); /* input routine */ void (*oput)(Queue*, Block*); /* output routine */ void (*open)(Queue*, Stream*); void (*close)(Queue*); char *name; void (*reset)(void); /* initialization */ Qinfo *next; }; /* * We reference lance buffers via descriptors kept in host memory */ struct Block { Block *next; uchar *rptr; /* first unconsumed byte */ uchar *wptr; /* first empty byte */ uchar *lim; /* 1 past the end of the buffer */ uchar *base; /* start of the buffer */ uchar flags; uchar type; }; /* flag bits */ #define S_DELIM 0x80 #define S_CLASS 0x07 /* type values */ #define M_DATA 0 #define M_CTL 1 #define M_HANGUP 2 /* * a list of blocks */ struct Blist { Lock; Block *first; /* first data block */ Block *last; /* last data block */ long len; /* length of list in bytes */ int nb; /* number of blocks in list */ }; /* * a queue of blocks */ struct Queue { Blist; int flag; Qinfo *info; /* line discipline definition */ Queue *other; /* opposite direction, same line discipline */ Queue *next; /* next queue in the stream */ void (*put)(Queue*, Block*); QLock rlock; /* mutex for processes sleeping at r */ Rendez r; /* standard place to wait for flow control */ Rendez *rp; /* where flow control wakeups go to */ void *ptr; /* private info for the queue */ }; #define QHUNGUP 0x1 /* flag bit meaning the stream has been hung up */ #define QINUSE 0x2 #define QHIWAT 0x4 /* queue has gone past the high water mark */ #define QDEBUG 0x8 /* * a stream head */ struct Stream { QLock; /* structure lock */ short inuse; /* number of processes in stream */ short opens; /* number of processes with stream open */ ushort hread; /* number of reads after hangup */ ushort type; /* correlation with Chan */ ushort dev; /* ... */ ushort id; /* ... */ QLock rdlock; /* read lock */ Queue *procq; /* write queue at process end */ Queue *devq; /* read queue at device end */ }; #define RD(q) ((q)->other < (q) ? (q->other) : q) #define WR(q) ((q)->other > (q) ? (q->other) : q) #define GLOBAL(a) (((ulong)(a)) & 0x80000000) #define STREAMTYPE(x) ((x)&0x1f) #define STREAMID(x) (((x)&~CHDIR)>>5) #define STREAMQID(i,t) (((i)<<5)|(t)) #define PUTNEXT(q,b) (*(q)->next->put)((q)->next, b) #define BLEN(b) ((b)->wptr - (b)->rptr) #define QFULL(q) ((q)->flag & QHIWAT) #define FLOWCTL(q) { if(QFULL(q->next)) flowctl(q); } /* * stream file qid's & high water mark */ enum { Shighqid = STREAMQID(1,0) - 1, Sdataqid = Shighqid, Sctlqid = Sdataqid-1, Slowqid = Sctlqid, Streamhi= (9*1024), /* byte count high water mark */ Streambhi= 32, /* block count high water mark */ };
1990/1231		/* * Ethernet packet buffers. */ struct Etherpkt { uchar d[6]; uchar s[6]; uchar type[2]; uchar data[1500]; uchar crc[4]; };
1991/0407		#define ETHERMINTU 60 /* minimum transmit size */ #define ETHERMAXTU 1514 /* maximum transmit size */ #define ETHERHDRSIZE 14 /* size of an ethernet header */
1990/1231
1990/1223		#define NSTUB 32 struct Service { Ref; Service *next; QLock alock; int die; Chan *inc; Chan *outc; char name[NAMELEN]; };
1991/0109		/* * LANCE CSR3 (bus control bits) */ #define BSWP 0x4 #define ACON 0x2 #define BCON 0x1
1990/1231		/* * system dependent lance stuff * filled by lancesetup() */ struct Lance { ushort lognrrb; /* log2 number of receive ring buffers */ ushort logntrb; /* log2 number of xmit ring buffers */ ushort nrrb; /* number of receive ring buffers */ ushort ntrb; /* number of xmit ring buffers */ ushort *rap; /* lance address register */ ushort *rdp; /* lance data register */
1991/0109		ushort busctl; /* bus control bits */
1990/1231		uchar ea[6]; /* our ether addr */ int sep; /* separation between shorts in lance ram as seen by host */ ushort *lanceram; /* start of lance ram as seen by host */ Lancemem *lm; /* start of lance ram as seen by lance */ Etherpkt *rp; /* receive buffers (host address) */ Etherpkt *tp; /* transmit buffers (host address) */ Etherpkt *lrp; /* receive buffers (lance address) */ Etherpkt *ltp; /* transmit buffers (lance address) */ };
1990/1223		#define PRINTSIZE 256
1990/1226		extern register Mach *m; /* R6 */ extern register User *u; /* R5 */
1990/1223		/* * Process states */ enum { Dead = 0, Moribund, Zombie, Ready, Scheding, Running, Queueing, MMUing, Exiting, Inwait, Wakeme, Broken, }; extern char *statename[]; /* * Chan flags */ #define COPEN 1 /* for i/o */ #define CMOUNT 2 /* is result of a mount/bind */ #define CCREATE 4 /* permits creation if CMOUNT */ #define CCEXEC 8 /* close on exec */ #define CFREE 16 /* not in use */ /* * Proc.time */ enum { TUser, TSys, TReal, TCUser, TCSys, TCReal, }; /* * floating point registers */ enum { FPinit, FPactive,
1991/01151		FPinactive,
1990/1223		}; /* * Memory management */ #define SSEG 0 #define TSEG 1 #define DSEG 2 #define BSEG 3 #define ESEG 4 /* used by exec to build new stack */ #define OWRPERM 0x01 /* write permission */ #define OPURE 0x02 /* original data mustn't be written */ #define OCACHED 0x04 /* cached; don't discard on exit */ /* * Access types in namec */ enum { Aaccess, /* as in access, stat */ Atodir, /* as in chdir */ Aopen, /* for i/o */ Amount, /* to be mounted upon */ Acreate, /* file is to be created */ }; #define NUMSIZE 12 /* size of formatted number */ #define MACHP(n) (n==0? &mach0 : *(Mach**)0) extern Conf conf; extern ulong initcode[]; extern Dev devtab[]; extern char devchar[]; extern FPsave initfp; extern Mach mach0; extern char user[NAMELEN]; extern char *errstrtab[];
1991/0110		extern uchar *intrreg;
1990/1223		extern void (*kprofp)(ulong); /* * parameters for sysproc.c */
1990/1226		#define AOUT_MAGIC K_MAGIC
1990/1223		#define ENTRYOFFSET 0