1999/0122/mpc/devrtc.c (diff list | history)

1999/0122/sys/src/9/mpc/devrtc.c:7,22 – 1999/0608/sys/src/9/mpc/devrtc.c:7,15 (short | long | prev | next)
1999/0121		#include "io.h" /* * MPC8xx real time clock * FADS board option switch * interrupt statistics */                  enum{ Qrtc = 1, Qswitch, Qintstat,
1999/0608		Qnvram,
1999/0121		/* sccr */ RTDIV= 1<<24,
1999/0122/sys/src/9/mpc/devrtc.c:25,38 – 1999/0608/sys/src/9/mpc/devrtc.c:18,35
1999/0121		/* rtcsc */ RTE= 1<<0, R38K= 1<<4,
1999/0608		Nvoff= 4*1024, /* where usable nvram lives */ Nvsize= 4*1024,
1999/0121		}; static QLock rtclock; /* mutex on clock operations */
1999/0608		static Lock nvrtlock;
1999/0121
1999/0608
1999/0121		static Dirtab rtcdir[]={ "rtc", {Qrtc, 0}, 12, 0666, "switch", {Qswitch, 0}, 0, 0444, "intstat", {Qintstat, 0}, 0, 0444,
1999/0608		"nvram", {Qnvram, 0}, Nvsize, 0664,
1999/0121		}; #define NRTC (sizeof(rtcdir)/sizeof(rtcdir[0]))
1999/0122/sys/src/9/mpc/devrtc.c:79,87 – 1999/0608/sys/src/9/mpc/devrtc.c:76,83
1999/0121		if(strcmp(up->user, eve)!=0 && omode!=OREAD) error(Eperm); break; case Qswitch: case Qintstat: if(omode!=OREAD)
1999/0608		case Qnvram: if(strcmp(up->user, eve)!=0)
1999/0121		error(Eperm); break; }
1999/0122/sys/src/9/mpc/devrtc.c:97,103 – 1999/0608/sys/src/9/mpc/devrtc.c:93,98
1999/0121		rtcread(Chan *c, void *buf, long n, vlong offset) { ulong t;
1999/0122		// char *b;
1999/0121		if(c->qid.path & CHDIR) return devdirread(c, buf, n, rtcdir, NRTC, devgen);
1999/0122/sys/src/9/mpc/devrtc.c:107,114 – 1999/0608/sys/src/9/mpc/devrtc.c:102,117
1999/0121		t = m->iomem->rtc; n = readnum(offset, buf, n, t, 12); return n; case Qswitch:
1999/0122		return readnum(offset, buf, n, 0xf/*(m->bcsr[2]>>19)&0xF*/, 12);
1999/0608		case Qnvram: if(offset >= Nvsize) return 0; t = offset; if(t + n > Nvsize) n = Nvsize - t; ilock(&nvrtlock); memmove(buf, (uchar*)(NVRAMMEM + Nvoff + t), n); iunlock(&nvrtlock); return n;
1999/0121		} error(Egreg); return 0; /* not reached */
1999/0122/sys/src/9/mpc/devrtc.c:120,125 – 1999/0608/sys/src/9/mpc/devrtc.c:123,129
1999/0121		ulong secs; char *cp, *ep; IMM *io;
1999/0608		ulong t;
1999/0121		switch(c->qid.path){ case Qrtc:
1999/0122/sys/src/9/mpc/devrtc.c:145,152 – 1999/0608/sys/src/9/mpc/devrtc.c:149,164
1999/0121		io->rtck = ~KEEP_ALIVE_KEY; iopunlock(); return n; case Qswitch: return 0;
1999/0608		case Qnvram: if(offset >= Nvsize) return 0; t = offset; if(t + n > Nvsize) n = Nvsize - t; ilock(&nvrtlock); memmove((uchar*)(NVRAMMEM + Nvoff + offset), buf, n); iunlock(&nvrtlock); return n;
1999/0121		} error(Egreg); return 0; /* not reached */