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- /*
- * This file is part of the UCB release of Plan 9. It is subject to the license
- * terms in the LICENSE file found in the top-level directory of this
- * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
- * part of the UCB release of Plan 9, including this file, may be copied,
- * modified, propagated, or distributed except according to the terms contained
- * in the LICENSE file.
- */
- typedef struct Alarms Alarms;
- typedef struct Block Block;
- typedef struct Chan Chan;
- typedef struct Cmdbuf Cmdbuf;
- typedef struct Cmdtab Cmdtab;
- typedef struct Confmem Confmem;
- typedef struct Dev Dev;
- typedef struct DevConf DevConf;
- typedef struct Dirtab Dirtab;
- typedef struct Edf Edf;
- typedef struct Egrp Egrp;
- typedef struct Evalue Evalue;
- typedef struct Fastcall Fastcall;
- typedef struct Fgrp Fgrp;
- typedef struct Image Image;
- typedef struct Kzio Kzio;
- typedef struct Ldseg Ldseg;
- typedef struct Log Log;
- typedef struct Logflag Logflag;
- typedef struct Lockstats Lockstats;
- typedef struct Mhead Mhead;
- typedef struct Mnt Mnt;
- typedef struct Mntcache Mntcache;
- typedef struct Mntrpc Mntrpc;
- typedef struct Mntwalk Mntwalk;
- typedef struct Mount Mount;
- typedef struct Note Note;
- typedef struct Page Page;
- typedef struct Path Path;
- typedef struct Perf Perf;
- typedef struct Pgalloc Pgalloc;
- typedef struct Pgrp Pgrp;
- typedef struct Pgsza Pgsza;
- typedef struct Physseg Physseg;
- typedef struct PhysUart PhysUart;
- typedef struct Proc Proc;
- typedef struct Procalloc Procalloc;
- typedef struct Pte Pte;
- typedef struct QLock QLock;
- typedef struct QLockstats QLockstats;
- typedef struct Queue Queue;
- typedef struct Ref Ref;
- typedef struct Rendez Rendez;
- typedef struct Rgrp Rgrp;
- typedef struct RWlock RWlock;
- typedef struct Sched Sched;
- typedef struct Schedq Schedq;
- typedef struct Segment Segment;
- typedef struct Sema Sema;
- typedef struct Timer Timer;
- typedef struct Timers Timers;
- typedef struct Uart Uart;
- typedef struct Waitq Waitq;
- typedef struct Waitstats Waitstats;
- typedef struct Walkqid Walkqid;
- typedef struct Watchdog Watchdog;
- typedef struct Watermark Watermark;
- typedef struct Zseg Zseg;
- typedef int Devgen(Chan*, char*, Dirtab*, int, int, Dir*);
- #pragma incomplete DevConf
- #pragma incomplete Edf
- #pragma incomplete Mntcache
- #pragma incomplete Mntrpc
- #pragma incomplete Queue
- #pragma incomplete Timers
- #include <fcall.h>
- #define ROUND(s, sz) (((s)+(sz-1))&~(sz-1))
- struct Ref
- {
- Lock l;
- int ref;
- };
- struct Rendez
- {
- Lock l;
- Proc *_p; // There is already a Proc *p into Lock
- };
- enum{
- NWstats = 500,
- WSlock = 0,
- WSqlock,
- WSslock,
- };
- /*
- * different arrays with stat info, so we can memset any of them
- * to 0 to clear stats.
- */
- struct Waitstats
- {
- int on;
- int npcs;
- int* type;
- uintptr_t* pcs;
- int* ns;
- uint64_t* wait;
- uint64_t* total;
- };
- extern Waitstats waitstats;
- struct Lockstats
- {
- uint32_t locks;
- uint32_t glare;
- uint32_t inglare;
- };
- extern Lockstats lockstats;
- struct QLockstats
- {
- uint32_t rlock;
- uint32_t rlockq;
- uint32_t wlock;
- uint32_t wlockq;
- uint32_t qlock;
- uint32_t qlockq;
- };
- extern QLockstats qlockstats;
- struct QLock
- {
- Lock use; /* to access Qlock structure */
- Proc *head; /* next process waiting for object */
- Proc *tail; /* last process waiting for object */
- int locked; /* flag */
- uintptr_t pc;
- };
- struct RWlock
- {
- Lock use;
- Proc *head; /* list of waiting processes */
- Proc *tail;
- uintptr_t wpc; /* pc of writer */
- Proc *wproc; /* writing proc */
- int readers; /* number of readers */
- int writer; /* number of writers */
- };
- struct Alarms
- {
- QLock ql;
- Proc *_head;
- };
- /*
- * Access types in namec & channel flags
- */
- enum
- {
- Aaccess, /* as in stat, wstat */
- Abind, /* for left-hand-side of bind */
- Atodir, /* as in chdir */
- Aopen, /* for i/o */
- Amount, /* to be mounted or mounted upon */
- Acreate, /* is to be created */
- Aremove, /* will be removed by caller */
- COPEN = 0x0001, /* for i/o */
- CMSG = 0x0002, /* the message channel for a mount */
- /*rsc CCREATE = 0x0004,*/ /* permits creation if c->mnt */
- CCEXEC = 0x0008, /* close on exec */
- CFREE = 0x0010, /* not in use */
- CRCLOSE = 0x0020, /* remove on close */
- CCACHE = 0x0080, /* client cache */
- };
- /* flag values */
- enum
- {
- BINTR = (1<<0),
- Bipck = (1<<2), /* ip checksum */
- Budpck = (1<<3), /* udp checksum */
- Btcpck = (1<<4), /* tcp checksum */
- Bpktck = (1<<5), /* packet checksum */
- };
- struct Block
- {
- int32_t ref;
- Block* next;
- Block* list;
- unsigned char* rp; /* first unconsumed byte */
- unsigned char* wp; /* first empty byte */
- unsigned char* lim; /* 1 past the end of the buffer */
- unsigned char* base; /* start of the buffer */
- void (*free)(Block*);
- uint16_t flag;
- uint16_t checksum; /* IP checksum of complete packet (minus media header) */
- uint32_t magic;
- };
- #define BLEN(s) ((s)->wp - (s)->rp)
- #define BALLOC(s) ((s)->lim - (s)->base)
- struct Chan
- {
- Ref r; /* the Lock in this Ref is also Chan's lock */
- Chan* next; /* allocation */
- Chan* link;
- int64_t offset; /* in fd */
- int64_t devoffset; /* in underlying device; see read */
- Dev* dev;
- uint devno;
- uint16_t mode; /* read/write */
- uint16_t flag;
- Qid qid;
- int fid; /* for devmnt */
- uint32_t iounit; /* chunk size for i/o; 0==default */
- Mhead* umh; /* mount point that derived Chan; used in unionread */
- Chan* umc; /* channel in union; held for union read */
- QLock umqlock; /* serialize unionreads */
- int uri; /* union read index */
- int dri; /* devdirread index */
- unsigned char* dirrock; /* directory entry rock for translations */
- int nrock;
- int mrock;
- QLock rockqlock;
- int ismtpt;
- Mntcache*mc; /* Mount cache pointer */
- Mnt* mux; /* Mnt for clients using me for messages */
- union {
- void* aux;
- Qid pgrpid; /* for #p/notepg */
- uint32_t mid; /* for ns in devproc */
- };
- Chan* mchan; /* channel to mounted server */
- Qid mqid; /* qid of root of mount point */
- Path* path;
- unsigned char *writebuff;
- int buffend;
- int writeoffset;
- int buffsize;
- };
- struct Path
- {
- Ref r;
- char* s;
- Chan** mtpt; /* mtpt history */
- int len; /* strlen(s) */
- int alen; /* allocated length of s */
- int mlen; /* number of path elements */
- int malen; /* allocated length of mtpt */
- };
- struct Dev
- {
- int dc;
- char* name;
- void (*reset)(void);
- void (*init)(void);
- void (*shutdown)(void);
- Chan* (*attach)(char*);
- Walkqid*(*walk)(Chan*, Chan*, char**, int);
- int32_t (*stat)(Chan*, unsigned char*, int32_t);
- Chan* (*open)(Chan*, int);
- void (*create)(Chan*, char*, int, int);
- void (*close)(Chan*);
- int32_t (*read)(Chan*, void*, int32_t, int64_t);
- Block* (*bread)(Chan*, int32_t, int64_t);
- int32_t (*write)(Chan*, void*, int32_t, int64_t);
- int32_t (*bwrite)(Chan*, Block*, int64_t);
- void (*remove)(Chan*);
- int32_t (*wstat)(Chan*, unsigned char*, int32_t);
- void (*power)(int); /* power mgt: power(1) => on, power (0) => off */
- int (*config)(int, char*, DevConf*); /* returns 0 on error */
- int (*zread)(Chan*, Kzio*, int, usize, int64_t);
- int (*zwrite)(Chan*, Kzio*, int, int64_t);
- };
- struct Dirtab
- {
- char name[KNAMELEN];
- Qid qid;
- int64_t length;
- int32_t perm;
- };
- struct Walkqid
- {
- Chan *clone;
- int nqid;
- Qid qid[1];
- };
- enum
- {
- NSMAX = 1000,
- NSLOG = 7,
- NSCACHE = (1<<NSLOG),
- };
- struct Mntwalk /* state for /proc/#/ns */
- {
- int cddone;
- Mhead* mh;
- Mount* cm;
- };
- struct Mount
- {
- int mountid;
- Mount* next;
- Mhead* head;
- Mount* copy;
- Mount* order;
- Chan* to; /* channel replacing channel */
- int mflag;
- char *spec;
- };
- struct Mhead
- {
- Ref r;
- RWlock lock;
- Chan* from; /* channel mounted upon */
- Mount* mount; /* what's mounted upon it */
- Mhead* hash; /* Hash chain */
- };
- struct Mnt
- {
- Lock l;
- /* references are counted using c->ref; channels on this mount point incref(c->mchan) == Mnt.c */
- Chan *c; /* Channel to file service */
- Proc *rip; /* Reader in progress */
- Mntrpc *queue; /* Queue of pending requests on this channel */
- uint id; /* Multiplexer id for channel check */
- Mnt *list; /* Free list */
- int flags; /* cache */
- int msize; /* data + IOHDRSZ */
- char *version; /* 9P version */
- Queue *q; /* input queue */
- };
- enum
- {
- NUser, /* note provided externally */
- NExit, /* deliver note quietly */
- NDebug, /* print debug message */
- };
- struct Note
- {
- char msg[ERRMAX];
- int flag; /* whether system posted it */
- };
- enum
- {
- PG_NOFLUSH = 0,
- PG_TXTFLUSH = 1, /* flush dcache and invalidate icache */
- PG_DATFLUSH = 2, /* flush both i & d caches (UNUSED) */
- PG_NEWCOL = 3, /* page has been recolored */
- PG_MOD = 0x01, /* software modified bit */
- PG_REF = 0x02, /* software referenced bit */
- };
- struct Page
- {
- Lock l;
- uintmem pa; /* Physical address in memory */
- uintptr_t va; /* Virtual address for user */
- uint32_t daddr; /* Disc address on swap */
- int ref; /* Reference count */
- unsigned char modref; /* Simulated modify/reference bits */
- int color; /* Cache coloring */
- char cachectl[MACHMAX]; /* Cache flushing control for mmuput */
- Image *image; /* Associated text or swap image */
- Page *next; /* Lru free list */
- Page *prev;
- Page *hash; /* Image hash chains */
- int pgszi; /* size index in machp()->pgsz[] */
- };
- struct Image
- {
- Ref r;
- Chan *c;
- Qid qid; /* Qid for page cache coherence */
- Qid mqid;
- Chan *mchan;
- int dc; /* Device type of owning channel */
- //subtype
- Segment *s; /* TEXT segment for image if running */
- Image *hash; /* Qid hash chains */
- Image *next; /* Free list or lru list */
- Image *prev; /* lru list */
- int notext; /* no file associated */
- int color;
- };
- /*
- * virtual MMU
- */
- #define PTEMAPMEM (1ULL*GiB)
- #define SEGMAPSIZE 1984
- #define SSEGMAPSIZE 16 /* XXX: shouldn't be 32 at least? */
- /*
- * Interface between fixfault and mmuput.
- */
- #define PTEVALID (1<<0)
- #define PTEWRITE (1<<1)
- #define PTERONLY (0<<1)
- #define PTEUSER (1<<2)
- #define PTENOEXEC (1<<3)
- #define PTEUNCACHED (1<<4)
- struct Pte
- {
- Page **first; /* First used entry */
- Page **last; /* Last used entry */
- Page *pages[]; /* Page map for this chunk of pte */
- };
- /* Segment types */
- enum
- {
- /* TODO(aki): these types are going to go */
- SG_TYPE = 0xf, /* Mask type of segment */
- SG_BAD0 = 0x0,
- SG_TEXT = 0x1,
- SG_DATA = 0x2,
- SG_BSS = 0x3,
- SG_STACK = 0x4,
- SG_SHARED = 0x5,
- SG_PHYSICAL = 0x6,
- SG_MMAP = 0x7,
- SG_LOAD = 0x8, /* replaces SG_TEXT, SG_DATA */
- SG_PERM = 0xf0,
- SG_READ = 0x10,
- SG_WRITE = 0x20,
- SG_EXEC = 0x40,
- SG_FLAG = 0xf00,
- SG_CACHED = 0x100, /* Physseg can be cached */
- SG_CEXEC = 0x200, /* Detach at exec */
- SG_ZIO = 0x400, /* used for zero copy */
- SG_KZIO = 0x800, /* kernel zero copy segment */
- };
- extern char *segtypes[]; /* port/segment.c */
- enum
- {
- FT_WRITE = 0,
- FT_READ,
- FT_EXEC,
- };
- extern char *faulttypes[]; /* port/fault.c */
- #define PG_ONSWAP 1
- #define onswap(s) (PTR2UINT(s) & PG_ONSWAP)
- #define pagedout(s) (PTR2UINT(s) == 0 || onswap(s))
- #define swapaddr(s) (PTR2UINT(s) & ~PG_ONSWAP)
- #define SEGMAXPG (SEGMAPSIZE)
- struct Physseg
- {
- uint32_t attr; /* Segment attributes */
- char *name; /* Attach name */
- uintmem pa; /* Physical address */
- usize size; /* Maximum segment size in pages */
- int pgszi; /* Page size index in Mach */
- Page *(*pgalloc)(Segment*, uintptr_t); /* Allocation if we need it */
- void (*pgfree)(Page*);
- uintptr_t gva; /* optional global virtual address */
- };
- struct Sema
- {
- Rendez rend;
- int* addr;
- int waiting;
- Sema* next;
- Sema* prev;
- };
- /* Zero copy per-segment information (locked using Segment.lk) */
- struct Zseg
- {
- void* map; /* memory map for buffers within this segment */
- uintptr_t *addr; /* array of addresses released */
- int naddr; /* size allocated for the array */
- int end; /* 1+ last used index in addr */
- Rendez rr; /* process waiting to read free addresses */
- };
- #define NOCOLOR -1
- /* demand loading params of a segment */
- struct Ldseg {
- int64_t memsz;
- int64_t filesz;
- int64_t pg0fileoff;
- uintptr_t pg0vaddr;
- uint32_t pg0off;
- uint32_t pgsz;
- uint16_t type;
- };
- struct Segment
- {
- Ref r;
- QLock lk;
- uint16_t steal; /* Page stealer lock */
- uint16_t type; /* segment type */
- int pgszi; /* page size index in Mach MMMU */
- uint ptepertab;
- int color;
- uintptr_t base; /* virtual base */
- uintptr_t top; /* virtual top */
- usize size; /* size in pages */
- Ldseg ldseg;
- int flushme; /* maintain icache for this segment */
- Image *image; /* text in file attached to this segment */
- Physseg *pseg;
- uint32_t *profile; /* Tick profile area */
- Pte **map;
- int mapsize;
- Pte *ssegmap[SSEGMAPSIZE];
- Lock semalock;
- Sema sema;
- Zseg zseg;
- };
- /*
- * NIX zero-copy IO structure.
- */
- struct Kzio
- {
- Zio Zio;
- Segment* seg;
- };
- enum
- {
- RENDLOG = 5,
- RENDHASH = 1<<RENDLOG, /* Hash to lookup rendezvous tags */
- MNTLOG = 5,
- MNTHASH = 1<<MNTLOG, /* Hash to walk mount table */
- NFD = 100, /* per process file descriptors */
- PGHLOG = 9,
- PGHSIZE = 1<<PGHLOG, /* Page hash for image lookup */
- };
- #define REND(p,s) ((p)->rendhash[(s)&((1<<RENDLOG)-1)])
- #define MOUNTH(p,qid) ((p)->mnthash[(qid).path&((1<<MNTLOG)-1)])
- struct Pgrp
- {
- Ref r; /* also used as a lock when mounting */
- int noattach;
- uint32_t pgrpid;
- QLock debug; /* single access via devproc.c */
- RWlock ns; /* Namespace n read/one write lock */
- Mhead *mnthash[MNTHASH];
- };
- struct Rgrp
- {
- Ref r; /* the Ref's lock is also the Rgrp's lock */
- Proc *rendhash[RENDHASH]; /* Rendezvous tag hash */
- };
- struct Egrp
- {
- Ref r;
- RWlock rwl;
- Evalue **ent;
- int nent;
- int ment;
- uint32_t path; /* qid.path of next Evalue to be allocated */
- uint32_t vers; /* of Egrp */
- };
- struct Evalue
- {
- char *name;
- char *value;
- int len;
- Evalue *link;
- Qid qid;
- };
- struct Fgrp
- {
- Ref r;
- Chan **fd;
- int nfd; /* number allocated */
- int maxfd; /* highest fd in use */
- int exceed; /* debugging */
- };
- enum
- {
- DELTAFD = 20 /* incremental increase in Fgrp.fd's */
- };
- struct Pgsza
- {
- uint32_t freecount; /* how many pages in the free list? */
- Ref npages; /* how many pages of this size? */
- Page *head; /* MRU */
- Page *tail; /* LRU */
- };
- struct Pgalloc
- {
- Lock l;
- int userinit; /* working in user init mode */
- Pgsza pgsza[NPGSZ]; /* allocs for m->npgsz page sizes */
- Page* hash[PGHSIZE]; /* only used for user pages */
- Lock hashlock;
- Rendez rend; /* sleep for free mem */
- QLock pwait; /* queue of procs waiting for this pgsz */
- };
- struct Waitq
- {
- Waitmsg w;
- Waitq *next;
- };
- /*
- * fasttick timer interrupts
- */
- enum {
- /* Mode */
- Trelative, /* timer programmed in ns from now */
- Tperiodic, /* periodic timer, period in ns */
- };
- struct Timer
- {
- /* Public interface */
- int tmode; /* See above */
- int64_t tns; /* meaning defined by mode */
- void (*tf)(Ureg*, Timer*);
- void *ta;
- /* Internal */
- Lock l;
- Timers *tt; /* Timers queue this timer runs on */
- int64_t twhen; /* ns represented in fastticks */
- Timer *tnext;
- };
- enum
- {
- RFNAMEG = (1<<0),
- RFENVG = (1<<1),
- RFFDG = (1<<2),
- RFNOTEG = (1<<3),
- RFPROC = (1<<4),
- RFMEM = (1<<5),
- RFNOWAIT = (1<<6),
- RFCNAMEG = (1<<10),
- RFCENVG = (1<<11),
- RFCFDG = (1<<12),
- RFREND = (1<<13),
- RFNOMNT = (1<<14),
- RFPREPAGE = (1<<15),
- RFCPREPAGE = (1<<16),
- RFCORE = (1<<17),
- RFCCORE = (1<<18),
- };
- /* execac */
- enum
- {
- EXTC = 0, /* exec on time-sharing */
- EXAC, /* want an AC for the exec'd image */
- EXXC, /* want an XC for the exec'd image */
- };
- /*
- * Maximum number of process memory segments
- */
- enum {
- NSEG = 12
- };
- enum
- {
- Dead = 0, /* Process states */
- Moribund,
- Ready,
- Scheding,
- Running,
- Queueing,
- QueueingR,
- QueueingW,
- Wakeme,
- Broken,
- Stopped,
- Rendezvous,
- Waitrelease,
- Exotic, /* NIX */
- Semdown,
- Proc_stopme = 1, /* devproc requests */
- Proc_exitme,
- Proc_traceme,
- Proc_exitbig,
- Proc_tracesyscall,
- Proc_toac,
- Proc_totc,
- TUser = 0, /* Proc.time */
- TSys,
- TReal,
- TCUser,
- TCSys,
- TCReal,
- NERR = 64,
- NNOTE = 5,
- Npriq = 20, /* number of scheduler priority levels */
- Nrq = Npriq+2, /* number of priority levels including real time */
- PriRelease = Npriq, /* released edf processes */
- PriEdf = Npriq+1, /* active edf processes */
- PriNormal = 10, /* base priority for normal processes */
- PriExtra = Npriq-1, /* edf processes at high best-effort pri */
- PriKproc = 13, /* base priority for kernel processes */
- PriRoot = 13, /* base priority for root processes */
- };
- struct Schedq
- {
- Proc* head;
- Proc* tail;
- int n;
- };
- struct Sched
- {
- Lock l; /* runq */
- int nrdy;
- uint32_t delayedscheds; /* statistics */
- int32_t skipscheds;
- int32_t preempts;
- int schedgain;
- uint32_t balancetime;
- Schedq runq[Nrq];
- uint32_t runvec;
- int nmach; /* # of cores with this color */
- uint32_t nrun; /* to compute load */
- };
- typedef union Ar0 Ar0;
- union Ar0 {
- int i;
- int32_t l;
- uintptr_t p;
- usize u;
- void* v;
- int64_t vl;
- };
- typedef struct Nixpctl Nixpctl;
- #pragma incomplete Nixpctl
- struct Proc
- {
- Label sched; /* known to l.s */
- char *kstack; /* known to l.s */
- void *dbgreg; /* known to l.s User registers for devproc */
- uintptr_t tls; /* known to l.s thread local storage */
- Mach *mach; /* machine running this proc */
- char *text;
- char *user;
- char *args;
- int nargs; /* number of bytes of args */
- Proc *rnext; /* next process in run queue */
- Proc *qnext; /* next process on queue for a QLock */
- QLock *qlock; /* addr of qlock being queued for DEBUG */
- int state;
- char *psstate; /* What /proc/#/status reports */
- Segment *seg[NSEG];
- QLock seglock; /* locked whenever seg[] changes */
- int pid;
- int index; /* index (slot) in proc array */
- int ref; /* indirect reference */
- int noteid; /* Equivalent of note group */
- Proc *pidhash; /* next proc in pid hash */
- Lock exl; /* Lock count and waitq */
- Waitq *waitq; /* Exited processes wait children */
- int nchild; /* Number of living children */
- int nwait; /* Number of uncollected wait records */
- QLock qwaitr;
- Rendez waitr; /* Place to hang out in wait */
- Proc *parent;
- Pgrp *pgrp; /* Process group for namespace */
- Egrp *egrp; /* Environment group */
- Fgrp *fgrp; /* File descriptor group */
- Rgrp *rgrp; /* Rendez group */
- Fgrp *closingfgrp; /* used during teardown */
- int parentpid;
- uint32_t time[6]; /* User, Sys, Real; child U, S, R */
- uint64_t kentry; /* Kernel entry time stamp (for profiling) */
- /*
- * pcycles: cycles spent in this process (updated on procsave/restore)
- * when this is the current proc and we're in the kernel
- * (procrestores outnumber procsaves by one)
- * the number of cycles spent in the proc is pcycles + cycles()
- * when this is not the current process or we're in user mode
- * (procrestores and procsaves balance), it is pcycles.
- */
- int64_t pcycles;
- int insyscall;
- QLock debug; /* to access debugging elements of User */
- Proc *pdbg; /* the debugging process */
- uint32_t procmode; /* proc device file mode */
- uint32_t privatemem; /* proc does not let anyone read mem */
- int hang; /* hang at next exec for debug */
- int procctl; /* Control for /proc debugging */
- uintptr pc; /* DEBUG only */
- Lock rlock; /* sync sleep/wakeup with postnote */
- Rendez *r; /* rendezvous point slept on */
- Rendez sleep; /* place for syssleep/debug/tsleep */
- int notepending; /* note issued but not acted on */
- int kp; /* true if a kernel process */
- Proc *palarm; /* Next alarm time */
- uint32_t alarm; /* Time of call */
- int newtlb; /* Pager has changed my pte's, I must flush */
- int noswap; /* process is not swappable */
- uintptr rendtag; /* Tag for rendezvous */
- uintptr rendval; /* Value for rendezvous */
- Proc *rendhash; /* Hash list for tag values */
- Timer Timer; /* For tsleep and real-time */
- Rendez *trend;
- int (*tfn)(void*);
- void (*kpfun)(void*);
- void *kparg;
- int scallnr; /* system call number */
- unsigned char arg[MAXSYSARG*sizeof(void*)]; /* system call arguments */
- int nerrlab;
- Label errlab[NERR];
- char *syserrstr; /* last error from a system call, errbuf0 or 1 */
- char *errstr; /* reason we're unwinding the error stack, errbuf1 or 0 */
- char errbuf0[ERRMAX];
- char errbuf1[ERRMAX];
- char genbuf[128]; /* buffer used e.g. for last name element from namec */
- Chan *slash;
- Chan *dot;
- Note note[NNOTE];
- short nnote;
- short notified; /* sysnoted is due */
- Note lastnote;
- void (*notify)(void*, char*);
- Lock *lockwait;
- Lock *lastlock; /* debugging */
- Lock *lastilock; /* debugging */
- Mach *wired;
- Mach *mp; /* machine this process last ran on */
- int nlocks; /* number of locks held by proc */
- uint32_t delaysched;
- uint32_t priority; /* priority level */
- uint32_t basepri; /* base priority level */
- int fixedpri; /* priority level does not change */
- uint32_t cpu; /* cpu average */
- uint32_t lastupdate;
- uint32_t readytime; /* time process came ready */
- uint32_t movetime; /* last time process switched processors */
- int preempted; /* true if this process hasn't finished the interrupt
- * that last preempted it
- */
- Edf *edf; /* if non-null, real-time proc, edf contains scheduling params */
- int trace; /* process being traced? */
- uintptr qpc; /* pc calling last blocking qlock */
- int setargs;
- void *ureg; /* User registers for notes */
- int color;
- Fastcall* fc;
- int fcount;
- char* syscalltrace;
- /* NIX */
- Mach *ac;
- Page *acpml4;
- int prepagemem;
- Nixpctl *nixpctl; /* NIX queue based system calls */
- uint ntrap; /* # of traps while in this process */
- uint nintr; /* # of intrs while in this process */
- uint nsyscall; /* # of syscalls made by the process */
- uint nactrap; /* # of traps in the AC for this process */
- uint nacsyscall; /* # of syscalls in the AC for this process */
- uint nicc; /* # of ICCs for the process */
- uint64_t actime1; /* ticks as of last call in AC */
- uint64_t actime; /* ∑time from call in AC to ret to AC, and... */
- uint64_t tctime; /* ∑time from call received to call handled */
- int nqtrap; /* # of traps in last quantum */
- int nqsyscall; /* # of syscalls in the last quantum */
- int nfullq;
- /*
- * machine specific fpu, mmu and notify
- */
- PFPU FPU;
- PMMU MMU;
- PNOTIFY NOTIFY;
- /*
- * mmap support.
- * For addresses that we reference that don't have a mapping,
- * if this queue is not NULL, we will send a message on it to be
- * handled by some other proc (not ourselves) and block on reading
- * a result back.
- */
- Queue *req, *resp;
- };
- struct Procalloc
- {
- Lock l;
- int nproc;
- Proc* ht[128];
- Proc* arena;
- Proc* free;
- };
- enum
- {
- PRINTSIZE = 256,
- MAXCRYPT = 127,
- NUMSIZE = 12, /* size of formatted number */
- MB = (1024*1024),
- /* READSTR was 1000, which is way too small for usb's ctl file */
- READSTR = 4000, /* temporary buffer size for device reads */
- WRITESTR = 256, /* ctl file write max */
- };
- extern Conf conf;
- extern char* conffile;
- extern char* cputype;
- extern int cpuserver;
- extern char* eve;
- extern char hostdomain[];
- extern uint8_t initcode[];
- extern int kbdbuttons;
- extern Ref noteidalloc;
- extern int nphysseg;
- extern int nsyscall;
- extern Pgalloc pga;
- extern Physseg physseg[];
- extern Procalloc procalloc;
- extern uint qiomaxatomic;
- extern char* statename[];
- extern char* sysname;
- typedef struct Systab Systab;
- struct Systab {
- char* n;
- void (*f)(Ar0*, ...);
- Ar0 r;
- };
- extern Systab systab[];
- enum
- {
- LRESPROF = 3,
- };
- /*
- * action log
- */
- struct Log {
- Lock l;
- int opens;
- char* buf;
- char *end;
- char *rptr;
- int len;
- int nlog;
- int minread;
- int logmask; /* mask of things to debug */
- QLock readq;
- Rendez readr;
- };
- struct Logflag {
- char* name;
- int mask;
- };
- enum
- {
- NCMDFIELD = 128
- };
- struct Cmdbuf
- {
- char *buf;
- char **f;
- int nf;
- };
- struct Cmdtab
- {
- int index; /* used by client to switch on result */
- char *cmd; /* command name */
- int narg; /* expected #args; 0 ==> variadic */
- };
- /*
- * routines to access UART hardware
- */
- struct PhysUart
- {
- char* name;
- Uart* (*pnp)(void);
- void (*enable)(Uart*, int);
- void (*disable)(Uart*);
- void (*kick)(Uart*);
- void (*dobreak)(Uart*, int);
- int (*baud)(Uart*, int);
- int (*bits)(Uart*, int);
- int (*stop)(Uart*, int);
- int (*parity)(Uart*, int);
- void (*modemctl)(Uart*, int);
- void (*rts)(Uart*, int);
- void (*dtr)(Uart*, int);
- int32_t (*status)(Uart*, void*, int32_t, int32_t);
- void (*fifo)(Uart*, int);
- void (*power)(Uart*, int);
- int (*getc)(Uart*); /* polling version for rdb */
- void (*putc)(Uart*, int); /* polling version for iprint */
- void (*poll)(Uart*); /* polled interrupt routine */
- };
- enum {
- Stagesize= 2048
- };
- /*
- * software UART
- */
- struct Uart
- {
- void* regs; /* hardware stuff */
- void* saveregs; /* place to put registers on power down */
- char* name; /* internal name */
- uint32_t freq; /* clock frequency */
- int bits; /* bits per character */
- int stop; /* stop bits */
- int parity; /* even, odd or no parity */
- int baud; /* baud rate */
- PhysUart*phys;
- int console; /* used as a serial console */
- int special; /* internal kernel device */
- Uart* next; /* list of allocated uarts */
- QLock ql;
- int type; /* ?? */
- int dev;
- int opens;
- int enabled;
- Uart *elist; /* next enabled interface */
- int perr; /* parity errors */
- int ferr; /* framing errors */
- int oerr; /* rcvr overruns */
- int berr; /* no input buffers */
- int serr; /* input queue overflow */
- /* buffers */
- int (*putc)(Queue*, int);
- Queue *iq;
- Queue *oq;
- Lock rlock;
- unsigned char istage[Stagesize];
- unsigned char *iw;
- unsigned char *ir;
- unsigned char *ie;
- Lock tlock; /* transmit */
- unsigned char ostage[Stagesize];
- unsigned char *op;
- unsigned char *oe;
- int drain;
- int modem; /* hardware flow control on */
- int xonoff; /* software flow control on */
- int blocked;
- int cts, dsr, dcd; /* keep track of modem status */
- int ctsbackoff;
- int hup_dsr, hup_dcd; /* send hangup upstream? */
- int dohup;
- Rendez rend;
- };
- extern Uart* consuart;
- /*
- * performance timers, all units in perfticks
- */
- struct Perf
- {
- uint32_t intrts; /* time of last interrupt */
- uint32_t inintr; /* time since last clock tick in interrupt handlers */
- uint32_t avg_inintr; /* avg time per clock tick in interrupt handlers */
- uint32_t inidle; /* time since last clock tick in idle loop */
- uint32_t avg_inidle; /* avg time per clock tick in idle loop */
- uint32_t last; /* value of perfticks() at last clock tick */
- uint32_t period; /* perfticks() per clock tick */
- };
- struct Watchdog
- {
- void (*enable)(void); /* watchdog enable */
- void (*disable)(void); /* watchdog disable */
- void (*restart)(void); /* watchdog restart */
- void (*stat)(char*, char*); /* watchdog statistics */
- };
- struct Watermark
- {
- int highwater;
- int curr;
- int max;
- int hitmax; /* count: how many times hit max? */
- char *name;
- };
- /* queue state bits, Qmsg, Qcoalesce, and Qkick can be set in qopen */
- enum
- {
- /* Queue.state */
- Qstarve = (1<<0), /* consumer starved */
- Qmsg = (1<<1), /* message stream */
- Qclosed = (1<<2), /* queue has been closed/hungup */
- Qflow = (1<<3), /* producer flow controlled */
- Qcoalesce = (1<<4), /* coallesce packets on read */
- Qkick = (1<<5), /* always call the kick routine after qwrite */
- };
- /* Fast system call struct -- these are dynamically allocted in Proc struct */
- struct Fastcall {
- int scnum;
- Chan* c;
- void (*fun)(Ar0*, Fastcall*);
- void* buf;
- int n;
- int64_t offset;
- };
- #define DEVDOTDOT -1
- #pragma varargck type "I" unsigned char*
- #pragma varargck type "V" unsigned char*
- #pragma varargck type "E" unsigned char*
- #pragma varargck type "M" unsigned char*
- #pragma varargck type "W" uint64_t
- #pragma varargck type "Z" Kzio*
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