from netbsd:

machine-independent TurboChannel bus configuration.  These files
deal with stuff like:
        (1) configuring built-in devices,
        (2) looking at TC slots configuring any devices found.
The lists of slots, slot locations, etc. and built-in devices
are provided by machine-dependent code.  Interrupt handling
is also provided by machine-dependent code, but the MD code provides
hooks so that standard names for 'establish' and 'disestablish'
can be used in drivers.

This code requires <machine/tc_machdep.h>, which defines some
portability types specific to the TurboChannel bus code.

1 files changed, 141 insertions, 0 deletions

diff --git a/sys/arch/alpha/tc/tcasic.c b/sys/arch/alpha/tc/tcasic.c
new file mode 100644
index 00000000000..9524b08957f
--- /dev/null
+++ b/sys/arch/alpha/tc/tcasic.c
@@ -0,0 +1,141 @@
+/*	$NetBSD: tcasic.c,v 1.1 1995/12/20 00:43:34 cgd Exp $	*/
+
+/*
+ * Copyright (c) 1994, 1995 Carnegie-Mellon University.
+ * All rights reserved.
+ *
+ * Author: Chris G. Demetriou
+ * 
+ * Permission to use, copy, modify and distribute this software and
+ * its documentation is hereby granted, provided that both the copyright
+ * notice and this permission notice appear in all copies of the
+ * software, derivative works or modified versions, and any portions
+ * thereof, and that both notices appear in supporting documentation.
+ * 
+ * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 
+ * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 
+ * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
+ * 
+ * Carnegie Mellon requests users of this software to return to
+ *
+ *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
+ *  School of Computer Science
+ *  Carnegie Mellon University
+ *  Pittsburgh PA 15213-3890
+ *
+ * any improvements or extensions that they make and grant Carnegie the
+ * rights to redistribute these changes.
+ */
+
+#include <sys/param.h>
+#include <sys/device.h>
+
+#include <machine/autoconf.h>
+#include <machine/rpb.h>
+
+#include <dev/tc/tcvar.h>
+#include <alpha/tc/tc_conf.h>
+
+/* Definition of the driver for autoconfig. */
+int	tcasicmatch(struct device *, void *, void *);
+void	tcasicattach(struct device *, struct device *, void *);
+struct cfdriver tcasiccd =
+    { NULL, "tcasic", tcasicmatch, tcasicattach, DV_DULL,
+    sizeof (struct device) };
+
+int	tcasicprint __P((void *, char *));
+
+extern int cputype;
+
+/* There can be only one. */
+int	tcasicfound;
+
+int
+tcasicmatch(parent, cfdata, aux)
+	struct device *parent;
+	void *cfdata;
+	void *aux;
+{
+	struct confargs *ca = aux;
+
+        /* Make sure that we're looking for a TurboChannel ASIC. */
+        if (strcmp(ca->ca_name, tcasiccd.cd_name))
+                return (0);
+
+        /* Make sure that the system supports a TurboChannel ASIC. */
+	if ((cputype != ST_DEC_3000_500) && (cputype != ST_DEC_3000_300))
+		return (0);
+
+	if (tcasicfound)
+		return (0);
+
+	return (1);
+}
+
+void
+tcasicattach(parent, self, aux)
+	struct device *parent;
+	struct device *self;
+	void *aux;
+{
+	struct tc_attach_args tc;
+	void (*intr_setup) __P((void));
+	void (*iointr) __P((void *, int));
+
+	tcasicfound = 1;
+
+	switch (cputype) {
+#ifdef DEC_3000_500
+	case ST_DEC_3000_500:
+		printf(": 25MHz\n");
+
+		intr_setup = tc_3000_500_intr_setup;
+		iointr = tc_3000_500_iointr;
+
+		tc.tca_nslots = tc_3000_500_nslots;
+		tc.tca_slots = tc_3000_500_slots;
+		tc.tca_nbuiltins = tc_3000_500_nbuiltins;
+		tc.tca_builtins = tc_3000_500_builtins;
+		tc.tca_intr_establish = tc_3000_500_intr_establish;
+		tc.tca_intr_disestablish = tc_3000_500_intr_disestablish;
+		break;
+#endif /* DEC_3000_500 */
+
+#ifdef DEC_3000_300
+	case ST_DEC_3000_300:
+		printf(": 12.5MHz\n");
+
+		intr_setup = tc_3000_300_intr_setup;
+		iointr = tc_3000_300_iointr;
+
+		tc.tca_nslots = tc_3000_300_nslots;
+		tc.tca_slots = tc_3000_300_slots;
+		tc.tca_nbuiltins = tc_3000_300_nbuiltins;
+		tc.tca_builtins = tc_3000_300_builtins;
+		tc.tca_intr_establish = tc_3000_300_intr_establish;
+		tc.tca_intr_disestablish = tc_3000_300_intr_disestablish;
+		break;
+#endif /* DEC_3000_300 */
+
+	default:
+		printf("\n");
+		panic("tcasicattach: bad cputype");
+	}
+
+	(*intr_setup)();
+	set_iointr(iointr);
+
+	config_found(self, &tc, tcasicprint);
+}
+
+int
+tcasicprint(aux, pnp)
+	void *aux;
+	char *pnp;
+{
+
+	/* only TCs can attach to tcasics; easy. */
+	if (pnp)
+		printf("tc at %s", pnp);
+	return (UNCONF);
+}