From 6606924480109f0edf7e986b0d8a009ee711835e Mon Sep 17 00:00:00 2001
From: Jason Wright <jason@cvs.openbsd.org>
Date: Tue, 28 Sep 2004 18:37:44 +0000
Subject: use prom mappings when availavk

---
 sys/arch/sparc64/dev/fhc.c    |  6 +++++-
 sys/arch/sparc64/dev/fhcvar.h | 10 ++++++----
 sys/arch/sparc64/dev/zs.c     | 36 +++++++++++++++++++++++++++---------
 3 files changed, 38 insertions(+), 14 deletions(-)

(limited to 'sys/arch/sparc64/dev')

diff --git a/sys/arch/sparc64/dev/fhc.c b/sys/arch/sparc64/dev/fhc.c
index 0d356248493..868d36fe8fb 100644
--- a/sys/arch/sparc64/dev/fhc.c
+++ b/sys/arch/sparc64/dev/fhc.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: fhc.c,v 1.10 2004/09/28 02:01:49 jason Exp $	*/
+/*	$OpenBSD: fhc.c,v 1.11 2004/09/28 18:37:43 jason Exp $	*/
 
 /*
  * Copyright (c) 2004 Jason L. Wright (jason@thought.net)
@@ -114,6 +114,8 @@ fhc_attach(struct fhc_softc *sc)
 		    &fa.fa_nreg, (void **)&fa.fa_reg);
 		getprop(node, "interrupts", sizeof(int),
 		    &fa.fa_nintr, (void **)&fa.fa_intr);
+		getprop(node, "address", sizeof(*fa.fa_promvaddrs),
+		    &fa.fa_npromvaddrs, (void **)&fa.fa_promvaddrs);
 
 		(void)config_found(&sc->sc_dv, (void *)&fa, fhc_print);
 
@@ -123,6 +125,8 @@ fhc_attach(struct fhc_softc *sc)
 			free(fa.fa_reg, M_DEVBUF);
 		if (fa.fa_nintr != NULL)
 			free(fa.fa_intr, M_DEVBUF);
+		if (fa.fa_promvaddrs != NULL)
+			free(fa.fa_promvaddrs, M_DEVBUF);
 	}
 
 	if (sparc_led_blink)
diff --git a/sys/arch/sparc64/dev/fhcvar.h b/sys/arch/sparc64/dev/fhcvar.h
index ed2eb90a582..2e2eb92e51a 100644
--- a/sys/arch/sparc64/dev/fhcvar.h
+++ b/sys/arch/sparc64/dev/fhcvar.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: fhcvar.h,v 1.6 2004/09/27 21:12:40 jason Exp $	*/
+/*	$OpenBSD: fhcvar.h,v 1.7 2004/09/28 18:37:43 jason Exp $	*/
 
 /*
  * Copyright (c) 2004 Jason L. Wright (jason@thought.net).
@@ -63,13 +63,15 @@ void fhc_attach(struct fhc_softc *);
 int fhc_get_string(int, char *, char **);
 
 struct fhc_attach_args {
+	bus_space_tag_t fa_bustag;
 	char *fa_name;
+	int *fa_intr;
+	struct fhc_reg *fa_reg;
+	u_int32_t *fa_promvaddrs;
 	int fa_node;
 	int fa_nreg;
 	int fa_nintr;
-	int *fa_intr;
-	struct fhc_reg *fa_reg;
-	bus_space_tag_t fa_bustag;
+	int fa_npromvaddrs;
 };
 
 #define	fhc_bus_map(t, slot, offset, sz, flags, hp)		\
diff --git a/sys/arch/sparc64/dev/zs.c b/sys/arch/sparc64/dev/zs.c
index 7184db54dc2..d468a1c7dee 100644
--- a/sys/arch/sparc64/dev/zs.c
+++ b/sys/arch/sparc64/dev/zs.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: zs.c,v 1.15 2004/09/24 20:53:12 jason Exp $	*/
+/*	$OpenBSD: zs.c,v 1.16 2004/09/28 18:37:43 jason Exp $	*/
 /*	$NetBSD: zs.c,v 1.29 2001/05/30 15:24:24 lukem Exp $	*/
 
 /*-
@@ -290,7 +290,7 @@ zs_attach_fhc(parent, self, aux)
 	int zs_unit = zsc->zsc_dev.dv_unit;
 	bus_space_handle_t kvaddr;
 
-	if (fa->fa_nreg < 1) {
+	if (fa->fa_nreg < 1 && fa->fa_npromvaddrs < 1) {
 		printf(": no registers\n");
 		return;
 	}
@@ -300,14 +300,32 @@ zs_attach_fhc(parent, self, aux)
 		return;
 	}
 
-	if (fhc_bus_map(fa->fa_bustag, fa->fa_reg[0].fbr_slot,
-	    fa->fa_reg[0].fbr_offset, fa->fa_reg[0].fbr_size,
-	    BUS_SPACE_MAP_LINEAR, &kvaddr) != 0) {
-		printf("%s @ fhc: cannot map registers\n", self->dv_xname);
-		return;
+	if (zsaddr[zs_unit] == NULL) {
+		if (fa->fa_npromvaddrs) {
+			/*
+			 * We're converting from a 32-bit pointer to a 64-bit
+			 * pointer.  Since the 32-bit entity is negative, but
+			 * the kernel is still mapped into the lower 4GB
+			 * range, this needs to be zero-extended.
+			 *
+			 * XXXXX If we map the kernel and devices into the
+			 * high 4GB range, this needs to be changed to
+			 * sign-extend the address.
+			 */
+			zsaddr[zs_unit] = (struct zsdevice *)
+			    (unsigned long int)fa->fa_promvaddrs[0];
+		} else {
+			if (fhc_bus_map(fa->fa_bustag, fa->fa_reg[0].fbr_slot,
+			    fa->fa_reg[0].fbr_offset, fa->fa_reg[0].fbr_size,
+			    BUS_SPACE_MAP_LINEAR, &kvaddr) != 0) {
+				printf("%s @ fhc: cannot map registers\n",
+				    self->dv_xname);
+				return;
+			}
+			zsaddr[zs_unit] = (struct zsdevice *)
+			    bus_space_vaddr(fa->fa_bustag, kvaddr);
+		}
 	}
-	zsaddr[zs_unit] =
-	    (struct zsdevice *) bus_space_vaddr(fa->fa_bustag, kvaddr);
 
 	zsc->zsc_bustag = fa->fa_bustag;
 	zsc->zsc_dmatag = NULL;
-- 
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