1992/0621/gnot/devport.c (diff list | history)

1992/0321/sys/src/9/gnot/devport.c:11,17 – 1992/0621/sys/src/9/gnot/devport.c:11,25 (short | long | prev | next)
1992/0225		#define ROMADDR 0x40000000 #define ROMSIZE ((256*1024)/8)
1991/0110		enum {
1992/0621		#define P_oper(sel, inst) (P_qlock(sel), inst, P_qunlock(sel)) #define P_qlock(sel) (sel >= 0 ? (qlock(&portpage), \ PORTSELECT = portpage.select = sel) : -1) #define P_qunlock(sel) (sel >= 0 ? (qunlock(&portpage),0) : -1) #define P_read(sel, addr, val, type) P_oper(sel, val = *(type *)(PORT+addr)) #define P_write(sel, addr, val, type) P_oper(sel, *(type *)(PORT+addr) = val) enum {
1991/0110		Qdir, Qdata,
1992/0225		Qrom
1992/0321/sys/src/9/gnot/devport.c:24,29 – 1992/0621/sys/src/9/gnot/devport.c:32,42
1991/0110		#define NPORT (sizeof portdir/sizeof(Dirtab))
1992/0621		#define Nportservice 8 static int (*portservice[Nportservice])(void); static Portpage portpage; static Lock intrlock;
1991/0110		int portprobe(char *what, int select, int addr, int rw, long val) {
1992/0321/sys/src/9/gnot/devport.c:33,49 – 1992/0621/sys/src/9/gnot/devport.c:46,68
1991/0110		P_qlock(select); switch (rw) { case -1: val = *(uchar *)(PORT+addr); break;
1992/0621		val = *(uchar *)(PORT+addr); break;
1991/0110		case -2: val = *(ushort *)(PORT+addr); break;
1992/0621		val = *(ushort *)(PORT+addr); break;
1991/0110		case -4: val = *(long *)(PORT+addr); break;
1992/0621		val = *(long *)(PORT+addr); break;
1991/0110		case 1: *(uchar *)(PORT+addr) = val; break;
1992/0621		*(uchar *)(PORT+addr) = val; break;
1991/0110		case 2: *(ushort *)(PORT+addr) = val; break;
1992/0621		*(ushort *)(PORT+addr) = val; break;
1991/0110		case 4: *(long *)(PORT+addr) = val; break;
1992/0621		*(long *)(PORT+addr) = val; break;
1991/0110		default: panic("portprobe"); }
1992/0321/sys/src/9/gnot/devport.c:68,74 – 1992/0621/sys/src/9/gnot/devport.c:87,94
1991/0110		void portinit(void) {}
1992/0621		{ }
1991/0110		Chan * portattach(char *param)
1992/0321/sys/src/9/gnot/devport.c:108,114 – 1992/0621/sys/src/9/gnot/devport.c:128,135
1991/0110		void portclose(Chan *c) {}
1992/0621		{ }
1991/0110		long
1991/0411		portread(Chan *c, char *a, long n, ulong offset)
1992/0321/sys/src/9/gnot/devport.c:167,175 – 1992/0621/sys/src/9/gnot/devport.c:188,198
1991/0110		case 1: PORT[k] = *a; break; case 2: *(short *)(PORT+k) = *(short *)a; break;
1992/0621		*(short *)(PORT+k) = *(short *)a; break;
1991/0110		case 4: *(long *)(PORT+k) = *(long *)a; break;
1992/0621		*(long *)(PORT+k) = *(long *)a; break;
1991/0110		default: P_qunlock(s); error(Ebadarg);
1992/0321/sys/src/9/gnot/devport.c:185,190 – 1992/0621/sys/src/9/gnot/devport.c:208,214
1991/0110		void portremove(Chan *c) {
1992/0621		USED(c);
1991/0110		error(Eperm); }
1992/0321/sys/src/9/gnot/devport.c:191,211 – 1992/0621/sys/src/9/gnot/devport.c:215,230
1991/0110		void portwstat(Chan *c, char *dp) {
1992/0621		USED(c, dp);
1991/0110		error(Eperm); } #define Nportservice 8 int (*portservice[Nportservice])(void);                  Portpage portpage;                  Lock intrlock;                  void addportintr(int (*f)(void)) { int s = splhi(); int (**p)(void);
1992/0621
1991/0110		lock(&intrlock); for (p=portservice; *p; p++) if (*p == f)
1992/0321/sys/src/9/gnot/devport.c:221,233 – 1992/0621/sys/src/9/gnot/devport.c:240,254
1991/0110		void devportintr(void) { int (**p)(void); int i = 0;
1992/0621		int (**p)(void); int i = 0;
1991/0110		for (p=portservice; *p; p++) i |= (**p)();
1992/0621
1991/0110		if (!i) /*putstring("spurious portintr\n");*/ panic("portintr"); if (portpage.select >= 0) PORTSELECT = portpage.select;                  }