2000/0726/alphapc/devarch.c (diff list | history)

2000/0726/sys/src/9/alphapc/devarch.c:27,50 – 2001/0727/sys/src/9/alphapc/devarch.c:27,96 (short | long | prev | next)
2000/0401		} iomap; enum { Qdir, Qcputype, Qioalloc,
2001/0727		Qdir = 0, Qioalloc = 1,
2000/0401		Qiob, Qiow, Qiol, Qirqalloc,
2001/0727		Qbase, Qmax = 16,
2000/0401		}; static Dirtab ioallocdir[] = { "cputype", { Qcputype, 0 }, 0, 0444,
2001/0727		typedef long Rdwrfn(Chan*, void*, long, vlong); static Rdwrfn *readfn[Qmax]; static Rdwrfn *writefn[Qmax]; static Dirtab archdir[] = { ".", { Qdir, 0, QTDIR }, 0, 0555,
2000/0401		"ioalloc", { Qioalloc, 0 }, 0, 0444, "iob", { Qiob, 0 }, 0, 0660, "iow", { Qiow, 0 }, 0, 0660, "iol", { Qiol, 0 }, 0, 0660, "irqalloc", { Qirqalloc, 0}, 0, 0444, };
2001/0727		Lock archwlock; /* the lock is only for changing archdir */ int narchdir = Qbase;
2000/0401
2001/0727		/* * Add a file to the #P listing. Once added, you can't delete it. * You can't add a file with the same name as one already there, * and you get a pointer to the Dirtab entry so you can do things * like change the Qid version. Changing the Qid path is disallowed. */ Dirtab* addarchfile(char *name, int perm, Rdwrfn *rdfn, Rdwrfn *wrfn) { int i; Dirtab d; Dirtab *dp; memset(&d, 0, sizeof d); strcpy(d.name, name); d.perm = perm; lock(&archwlock); if(narchdir >= Qmax){ unlock(&archwlock); return nil; } for(i=0; i<narchdir; i++) if(strcmp(archdir[i].name, name) == 0){ unlock(&archwlock); return nil; } d.qid.path = narchdir; archdir[narchdir] = d; readfn[narchdir] = rdfn; writefn[narchdir] = wrfn; dp = &archdir[narchdir++]; unlock(&archwlock); return dp; }
2000/0401		void ioinit(void) {
2000/0726/sys/src/9/alphapc/devarch.c:59,66 – 2001/0727/sys/src/9/alphapc/devarch.c:105,110
2000/0726		ioalloc(0x20000, 1, 0, "dummy");
2000/0401		} static long cputyperead(char*, int, ulong);                  // // alloc some io port space and remember who it was // alloced to. if port < 0, find a free region.
2000/0726/sys/src/9/alphapc/devarch.c:115,121 – 2001/0727/sys/src/9/alphapc/devarch.c:159,165
2000/0401		m->tag[sizeof(m->tag)-1] = 0; *l = m; ioallocdir[0].qid.vers++;
2001/0727		archdir[0].qid.vers++;
2000/0401		unlock(&iomap); return m->start;
2000/0726/sys/src/9/alphapc/devarch.c:138,144 – 2001/0727/sys/src/9/alphapc/devarch.c:182,188
2000/0401		if((*l)->start > port) break; } ioallocdir[0].qid.vers++;
2001/0727		archdir[0].qid.vers++;
2000/0401		unlock(&iomap); }
2000/0726/sys/src/9/alphapc/devarch.c:175,196 – 2001/0727/sys/src/9/alphapc/devarch.c:219,240
2000/0401		return devattach('P', spec); } int archwalk(Chan* c, char* name)
2001/0727		Walkqid* archwalk(Chan* c, Chan *nc, char** name, int nname)
2000/0401		{ return devwalk(c, name, ioallocdir, nelem(ioallocdir), devgen);
2001/0727		return devwalk(c, nc, name, nname, archdir, narchdir, devgen);
2000/0401		} static void archstat(Chan* c, char* dp)
2001/0727		static int archstat(Chan* c, uchar* dp, int n)
2000/0401		{ devstat(c, dp, ioallocdir, nelem(ioallocdir), devgen);
2001/0727		return devstat(c, dp, n, archdir, narchdir, devgen);
2000/0401		} static Chan* archopen(Chan* c, int omode) { return devopen(c, omode, ioallocdir, nelem(ioallocdir), devgen);
2001/0727		return devopen(c, omode, archdir, nelem(archdir), devgen);
2000/0401		} static void
2000/0726/sys/src/9/alphapc/devarch.c:206,222 – 2001/0727/sys/src/9/alphapc/devarch.c:250,266
2000/0401		static long archread(Chan *c, void *a, long n, vlong offset) { char *p; IOMap *m; char buf[Linelen+1];
2001/0727		char buf[Linelen+1], *p;
2000/0401		int port; ushort *sp; ulong *lp;
2001/0727		IOMap *m; Rdwrfn *fn;
2000/0401		switch(c->qid.path & ~CHDIR){
2001/0727		switch((ulong)c->qid.path){
2000/0401		case Qdir: return devdirread(c, a, n, ioallocdir, nelem(ioallocdir), devgen);
2001/0727		return devdirread(c, a, n, archdir, nelem(archdir), devgen);
2000/0401		case Qiob: port = offset;
2000/0726/sys/src/9/alphapc/devarch.c:248,260 – 2001/0727/sys/src/9/alphapc/devarch.c:292,300
2000/0401		case Qioalloc: break; case Qirqalloc: return irqallocread(a, n, offset);                  case Qcputype: return cputyperead(a, n, offset);                  default:
2001/0727		if(c->qid.path < narchdir && (fn = readfn[c->qid.path])) return fn(c, a, n, offset);
2000/0401		error(Eperm); break; }
2000/0726/sys/src/9/alphapc/devarch.c:281,292 – 2001/0727/sys/src/9/alphapc/devarch.c:321,333
2000/0401		static long archwrite(Chan *c, void *a, long n, vlong offset) {
2001/0727		char *p;
2000/0401		int port; ushort *sp; ulong *lp; char *p;
2001/0727		Rdwrfn *fn;
2000/0401		switch(c->qid.path & ~CHDIR){
2001/0727		switch((ulong)c->qid.path){
2000/0401		case Qiob: p = a;
2000/0726/sys/src/9/alphapc/devarch.c:316,321 – 2001/0727/sys/src/9/alphapc/devarch.c:357,364
2000/0401		return n*4; default:
2001/0727		if(c->qid.path < narchdir && (fn = writefn[c->qid.path])) return fn(c, a, n, offset);
2000/0401		error(Eperm); break; }
2000/0726/sys/src/9/alphapc/devarch.c:329,335 – 2001/0727/sys/src/9/alphapc/devarch.c:372,377
2000/0401		devreset, devinit, archattach, devclone, archwalk, archstat, archopen,
2000/0726/sys/src/9/alphapc/devarch.c:366,387 – 2001/0727/sys/src/9/alphapc/devarch.c:408,413
2000/0401		}; void archinit(void) { PCArch **p;                  arch = 0; for(p = knownarch; *p; p++){ if((*p)->ident && (*p)->ident() == 0){ arch = *p; break; } } if(arch == 0) arch = &archgeneric; }                  void cpuidprint(void) { int i, maj, min;
2000/0726/sys/src/9/alphapc/devarch.c:419,425 – 2001/0727/sys/src/9/alphapc/devarch.c:445,451
2000/0401		} static long cputyperead(char *a, int n, ulong offset)
2001/0727		cputyperead(Chan*, void *a, long n, vlong offset)
2000/0401		{ char str[32], *cputype; ulong mhz, maj;
2000/0726/sys/src/9/alphapc/devarch.c:434,437 – 2001/0727/sys/src/9/alphapc/devarch.c:460,481
2000/0401		snprint(str, sizeof(str), "%s %lud\n", cputype, mhz); return readstr(offset, a, n, str);
2001/0727		} void archinit(void) { PCArch **p; arch = 0; for(p = knownarch; *p; p++){ if((*p)->ident && (*p)->ident() == 0){ arch = *p; break; } } if(arch == 0) arch = &archgeneric; addarchfile("cputype", 0444, cputyperead, nil);
2000/0401		}