From 30f45188c7e533334067f2c8949db8a87a9c4e2d Mon Sep 17 00:00:00 2001
From: Mark Kettenis <kettenis@cvs.openbsd.org>
Date: Tue, 16 Dec 2008 22:27:35 +0000
Subject: Make the "machine xir" ddb command work on machines with Tomatillo
 schizo(4) variants.

---
 sys/arch/sparc64/dev/schizo.c    | 28 +++++++++++++++++++++++++++-
 sys/arch/sparc64/dev/schizoreg.h |  5 ++++-
 2 files changed, 31 insertions(+), 2 deletions(-)

diff --git a/sys/arch/sparc64/dev/schizo.c b/sys/arch/sparc64/dev/schizo.c
index 0f4d772a9d9..a7e02226d15 100644
--- a/sys/arch/sparc64/dev/schizo.c
+++ b/sys/arch/sparc64/dev/schizo.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: schizo.c,v 1.55 2008/08/18 20:29:37 brad Exp $	*/
+/*	$OpenBSD: schizo.c,v 1.56 2008/12/16 22:27:34 kettenis Exp $	*/
 
 /*
  * Copyright (c) 2002 Jason L. Wright (jason@thought.net)
@@ -41,6 +41,10 @@
 #include <machine/autoconf.h>
 #include <machine/psl.h>
 
+#ifdef DDB
+#include <machine/db_machdep.h>
+#endif
+
 #include <dev/pci/pcivar.h>
 #include <dev/pci/pcireg.h>
 
@@ -101,6 +105,8 @@ void *schizo_intr_establish(bus_space_tag_t, bus_space_tag_t, int, int, int,
 int schizo_dmamap_create(bus_dma_tag_t, bus_dma_tag_t, bus_size_t, int,
     bus_size_t, bus_size_t, int, bus_dmamap_t *);
 
+void schizo_xir(void *, int);
+
 int
 schizo_match(struct device *parent, void *match, void *aux)
 {
@@ -270,6 +276,16 @@ schizo_init(struct schizo_softc *sc, int busa)
 	schizo_set_intr(sc, pbm, PIL_HIGH, schizo_safari_error, sc,
 	    SCZ_SERR_INO, "safari");
 
+#ifdef DDB
+	/* 
+	 * Only a master Tomatillo (the one with JPID[0:2] = 6)
+	 * can/should generate XIR.
+	 */
+	if (sc->sc_tomatillo &&
+	    ((schizo_read(sc, SCZ_CONTROL_STATUS) >> 20) & 0x7) == 6)
+		db_register_xir(schizo_xir, sc);
+#endif
+
 	config_found(&sc->sc_dv, &pba, schizo_print);
 }
 
@@ -780,6 +796,16 @@ schizo_intr_establish(bus_space_tag_t t, bus_space_tag_t t0, int ihandle,
 	return (ih);
 }
 
+#ifdef DDB
+void
+schizo_xir(void *arg, int cpu)
+{
+	struct schizo_softc *sc = arg;
+
+	schizo_write(sc, TOM_RESET_GEN, TOM_RESET_GEN_XIR);
+}
+#endif
+
 const struct cfattach schizo_ca = {
 	sizeof(struct schizo_softc), schizo_match, schizo_attach
 };
diff --git a/sys/arch/sparc64/dev/schizoreg.h b/sys/arch/sparc64/dev/schizoreg.h
index af4344e8026..629747d63d9 100644
--- a/sys/arch/sparc64/dev/schizoreg.h
+++ b/sys/arch/sparc64/dev/schizoreg.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: schizoreg.h,v 1.20 2008/07/12 13:08:04 kettenis Exp $	*/
+/*	$OpenBSD: schizoreg.h,v 1.21 2008/12/16 22:27:34 kettenis Exp $	*/
 
 /*
  * Copyright (c) 2002 Jason L. Wright (jason@thought.net)
@@ -95,6 +95,7 @@ struct schizo_regs {
 #define	SCZ_UE_AFAR			0x10038
 #define	SCZ_CE_AFSR			0x10040
 #define	SCZ_CE_AFAR			0x10048
+#define	TOM_RESET_GEN			0x17010
 
 /* These are relative to the PBM */
 #define	SCZ_PCI_IOMMU_CTRL		0x00200
@@ -183,6 +184,8 @@ struct schizo_regs {
 #define	SCZ_CEAFAR_PIO_PCIAC		0x0000038000000000UL	/*  pcib: config / i/o */
 #define	SCZ_CEAFAR_MEMADDR		0x000007fffffffff0UL	/* memory address */
 
+#define	TOM_RESET_GEN_XIR		0x00000000000000002L
+
 #define	SCZ_PCICTRL_BUS_UNUS		(1UL << 63UL)		/* bus unusable */
 #define	TOM_PCICTRL_DTO_ERR		(1UL << 62UL)		/* pci discard timeout */
 #define	TOM_PCICTRL_DTO_INT		(1UL << 61UL)		/* discard intr en */
-- 
cgit v1.2.3