1999/0612/mpc/devrtc.c (diff list | history)

1999/0608/sys/src/9/mpc/devrtc.c:10,15 – 1999/0612/sys/src/9/mpc/devrtc.c:10,16 (short | long | prev | next)
1999/0121		enum{ Qrtc = 1,
1999/0608		Qnvram,
1999/0612		Qnvram2,
1999/0121		/* sccr */ RTDIV= 1<<24,
1999/0608/sys/src/9/mpc/devrtc.c:21,26 – 1999/0612/sys/src/9/mpc/devrtc.c:22,29
1999/0608		Nvoff= 4*1024, /* where usable nvram lives */ Nvsize= 4*1024,
1999/0612		Nvoff2= 8*1024, /* where usable nvram lives */ Nvsize2= 4*1024,
1999/0121		}; static QLock rtclock; /* mutex on clock operations */
1999/0608/sys/src/9/mpc/devrtc.c:30,35 – 1999/0612/sys/src/9/mpc/devrtc.c:33,39
1999/0121		static Dirtab rtcdir[]={ "rtc", {Qrtc, 0}, 12, 0666,
1999/0608		"nvram", {Qnvram, 0}, Nvsize, 0664,
1999/0612		"nvram2", {Qnvram2, 0}, Nvsize, 0664,
1999/0121		}; #define NRTC (sizeof(rtcdir)/sizeof(rtcdir[0]))
1999/0608/sys/src/9/mpc/devrtc.c:77,82 – 1999/0612/sys/src/9/mpc/devrtc.c:81,87
1999/0121		error(Eperm); break;
1999/0608		case Qnvram:
1999/0612		case Qnvram2:
1999/0608		if(strcmp(up->user, eve)!=0)
1999/0121		error(Eperm); break;
1999/0608/sys/src/9/mpc/devrtc.c:112,117 – 1999/0612/sys/src/9/mpc/devrtc.c:117,132
1999/0608		memmove(buf, (uchar*)(NVRAMMEM + Nvoff + t), n); iunlock(&nvrtlock); return n;
1999/0612		case Qnvram2: if(offset >= Nvsize2) return 0; t = offset; if(t + n > Nvsize2) n = Nvsize2 - t; ilock(&nvrtlock); memmove(buf, (uchar*)(NVRAMMEM + Nvoff2 + t), n); iunlock(&nvrtlock); return n;
1999/0121		} error(Egreg); return 0; /* not reached */
1999/0608/sys/src/9/mpc/devrtc.c:157,162 – 1999/0612/sys/src/9/mpc/devrtc.c:172,187
1999/0608		n = Nvsize - t; ilock(&nvrtlock); memmove((uchar*)(NVRAMMEM + Nvoff + offset), buf, n);
1999/0612		iunlock(&nvrtlock); return n; case Qnvram2: if(offset >= Nvsize2) return 0; t = offset; if(t + n > Nvsize2) n = Nvsize2 - t; ilock(&nvrtlock); memmove((uchar*)(NVRAMMEM + Nvoff2 + offset), buf, n);
1999/0608		iunlock(&nvrtlock); return n;
1999/0121		}