1999/0715/pc/devlm78.c (diff list | history)

pc/devlm78.c on 1999/0715
1999/0715		#include "u.h" #include "../port/lib.h" #include "mem.h" #include "dat.h" #include "fns.h" #include "io.h" #include "ureg.h" #include "../port/error.h"
1999/0708
1999/0715		enum {
1999/0708		Qdir, Qtemp, };
1999/0715		static Dirtab lm78dir[] = { "temp", { Qtemp, 0 }, 0, 0444,
1999/0708		};
1999/0715		SMBus *lm78smbus;
1999/0708
1999/0715		extern SMBus* piix4smbus(void);
1999/0708
1999/0715		void
1999/0708		lm78init(void) {
1999/0715		lm78smbus = piix4smbus(); if(lm78smbus != nil) print("found piix4 smbus, base %lud\n", lm78smbus->base);
1999/0708		} static Chan*
1999/0715		lm78attach(char* spec)
1999/0708		{
1999/0715		return devattach('T', spec);
1999/0708		}
1999/0715		int
1999/0708		lm78walk(Chan* c, char* name) {
1999/0715		return devwalk(c, name, lm78dir, nelem(lm78dir), devgen);
1999/0708		} static void
1999/0715		lm78stat(Chan* c, char* dp) { devstat(c, dp, lm78dir, nelem(lm78dir), devgen);
1999/0708		} static Chan* lm78open(Chan* c, int omode) {
1999/0715		return devopen(c, omode, lm78dir, nelem(lm78dir), devgen);
1999/0708		} static void
1999/0715		lm78close(Chan*)
1999/0708		{ }
1999/0715		enum
1999/0708		{
1999/0715		Linelen= 25, };
1999/0708		static long
1999/0715		lm78read(Chan *c, void *a, long n, vlong offset)
1999/0708		{ switch(c->qid.path & ~CHDIR){
1999/0715
1999/0708		case Qdir:
1999/0715		return devdirread(c, a, n, lm78dir, nelem(lm78dir), devgen);
1999/0708		case Qtemp:
1999/0715		error(Eperm);
1999/0708		}
1999/0715		return 0;
1999/0708		} static long
1999/0715		lm78write(Chan *c, void *a, long n, vlong offset)
1999/0708		{
1999/0715		error(Eperm); return 0;
1999/0708		} Dev lm78devtab = {
1999/0715		'T',
1999/0708		"lm78",
1999/0715		devreset,
1999/0708		lm78init, lm78attach,
1999/0715		devclone,
1999/0708		lm78walk, lm78stat, lm78open,
1999/0715		devcreate,
1999/0708		lm78close, lm78read,
1999/0715		devbread,
1999/0708		lm78write,
1999/0715		devbwrite, devremove, devwstat,
1999/0708		};