make pci_conf_{read|write} indirect functions so we can overload them

2 files changed, 84 insertions, 44 deletions

diff --git a/sys/arch/sparc64/dev/pci_machdep.c b/sys/arch/sparc64/dev/pci_machdep.c
index a954876e04f..782a46fd9dc 100644
--- a/sys/arch/sparc64/dev/pci_machdep.c
+++ b/sys/arch/sparc64/dev/pci_machdep.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: pci_machdep.c,v 1.8 2002/03/26 18:13:11 jason Exp $	*/
+/*	$OpenBSD: pci_machdep.c,v 1.9 2002/06/08 18:06:02 jason Exp $	*/
 /*	$NetBSD: pci_machdep.c,v 1.22 2001/07/20 00:07:13 eeh Exp $	*/
 
 /*
@@ -336,6 +336,18 @@ pci_make_tag(pc, b, d, f)
 	return (tag);
 }
 
+pcireg_t (*sparc64_pci_conf_read)(pci_chipset_tag_t, pcitag_t, int);
+void (*sparc64_pci_conf_write)(pci_chipset_tag_t, pcitag_t, int, pcireg_t);
+
+void
+pci_conf_setfunc(rd, wr)
+	pcireg_t (*rd)(pci_chipset_tag_t, pcitag_t, int);
+	void (*wr)(pci_chipset_tag_t, pcitag_t, int, pcireg_t);
+{
+	sparc64_pci_conf_read = rd;
+	sparc64_pci_conf_write = wr;
+}
+
 /* assume we are mapped little-endian/side-effect */
 pcireg_t
 pci_conf_read(pc, tag, reg)
@@ -343,29 +355,9 @@ pci_conf_read(pc, tag, reg)
 	pcitag_t tag;
 	int reg;
 {
-	struct psycho_pbm *pp = pc->cookie;
-	struct psycho_softc *sc = pp->pp_sc;
-	pcireg_t val = (pcireg_t)~0;
-
-	DPRINTF(SPDB_CONF, ("pci_conf_read: tag %lx reg %x ", 
-		(long)tag, reg));
-	if (PCITAG_NODE(tag) != -1) {
-		DPRINTF(SPDB_CONF, ("asi=%x addr=%qx (offset=%x) ...",
-			bus_type_asi[sc->sc_configtag->type],
-			(long long)(sc->sc_configaddr + 
-				PCITAG_OFFSET(tag) + reg),
-			(int)PCITAG_OFFSET(tag) + reg));
-
-		val = bus_space_read_4(sc->sc_configtag, sc->sc_configaddr,
-			PCITAG_OFFSET(tag) + reg);
-	}
-#ifdef DEBUG
-	else DPRINTF(SPDB_CONF, ("pci_conf_read: bogus pcitag %x\n",
-	    (int)PCITAG_OFFSET(tag)));
-#endif
-	DPRINTF(SPDB_CONF, (" returning %08x\n", (u_int)val));
-
-	return (val);
+	if (sparc64_pci_conf_read == NULL)
+		panic("no pci_conf_read");
+	return ((*sparc64_pci_conf_read)(pc, tag, reg));
 }
 
 void
@@ -375,26 +367,12 @@ pci_conf_write(pc, tag, reg, data)
 	int reg;
 	pcireg_t data;
 {
-	struct psycho_pbm *pp = pc->cookie;
-	struct psycho_softc *sc = pp->pp_sc;
-
-	DPRINTF(SPDB_CONF, ("pci_conf_write: tag %lx; reg %x; data %x; ", 
-		(long)PCITAG_OFFSET(tag), reg, (int)data));
-	DPRINTF(SPDB_CONF, ("asi = %x; readaddr = %qx (offset = %x)\n",
-		bus_type_asi[sc->sc_configtag->type],
-		(long long)(sc->sc_configaddr + PCITAG_OFFSET(tag) + reg), 
-		(int)PCITAG_OFFSET(tag) + reg));
-
-	/* If we don't know it, just punt. */
-	if (PCITAG_NODE(tag) == -1) {
-		DPRINTF(SPDB_CONF, ("pci_config_write: bad addr"));
-		return;
-	}
-
-	bus_space_write_4(sc->sc_configtag, sc->sc_configaddr, 
-		PCITAG_OFFSET(tag) + reg, data);
+	if (sparc64_pci_conf_write == NULL)
+		panic("no pci_conf_read");
+	return ((*sparc64_pci_conf_write)(pc, tag, reg, data));
 }
 
+
 /*
  * interrupt mapping foo.
  * XXX: how does this deal with multiple interrupts for a device?
diff --git a/sys/arch/sparc64/dev/psycho.c b/sys/arch/sparc64/dev/psycho.c
index 04da28b9522..5a75e80a57b 100644
--- a/sys/arch/sparc64/dev/psycho.c
+++ b/sys/arch/sparc64/dev/psycho.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: psycho.c,v 1.19 2002/06/07 08:40:33 jason Exp $	*/
+/*	$OpenBSD: psycho.c,v 1.20 2002/06/08 18:06:02 jason Exp $	*/
 /*	$NetBSD: psycho.c,v 1.39 2001/10/07 20:30:41 eeh Exp $	*/
 
 /*
@@ -91,6 +91,8 @@ void psycho_iommu_init(struct psycho_softc *, int);
  * bus space and bus dma support for UltraSPARC `psycho'.  note that most
  * of the bus dma support is provided by the iommu dvma controller.
  */
+pcireg_t psycho_pci_conf_read(pci_chipset_tag_t pc, pcitag_t, int);
+void psycho_pci_conf_write(pci_chipset_tag_t, pcitag_t, int, pcireg_t);
 paddr_t psycho_bus_mmap(bus_space_tag_t, bus_addr_t, off_t, int, int);
 int _psycho_bus_map(bus_space_tag_t, bus_type_t, bus_addr_t,
     bus_size_t, int, vaddr_t, bus_space_handle_t *);
@@ -387,6 +389,8 @@ psycho_attach(parent, self, aux)
 	printf("bus range %u to %u", psycho_br[0], psycho_br[1]);
 	printf("; PCI bus %d", psycho_br[0]);
 
+	pci_conf_setfunc(psycho_pci_conf_read, psycho_pci_conf_write);
+
 	pp->pp_pcictl = &sc->sc_regs->psy_pcictl[0];
 
 	/* allocate our tags */
@@ -400,7 +404,7 @@ psycho_attach(parent, self, aux)
 	pp->pp_pc = psycho_alloc_chipset(pp, sc->sc_node, &_sparc_pci_chipset);
 
 	/* setup the rest of the psycho pbm */
-	pba.pba_pc = psycho_alloc_chipset(pp, sc->sc_node, pp->pp_pc);
+	pba.pba_pc = pp->pp_pc;
 
 	printf("\n");
 
@@ -1176,3 +1180,61 @@ psycho_dmamem_unmap(t, kva, size)
 
 	iommu_dvmamem_unmap(t, sc->sc_is, kva, size);
 }
+
+pcireg_t
+psycho_pci_conf_read(pc, tag, reg)
+	pci_chipset_tag_t pc;
+	pcitag_t tag;
+	int reg;
+{
+	struct psycho_pbm *pp = pc->cookie;
+	struct psycho_softc *sc = pp->pp_sc;
+	pcireg_t val = (pcireg_t)~0;
+
+	DPRINTF(SPDB_CONF, ("pci_conf_read: tag %lx reg %x ", 
+		(long)tag, reg));
+	if (PCITAG_NODE(tag) != -1) {
+		DPRINTF(SPDB_CONF, ("asi=%x addr=%qx (offset=%x) ...",
+			bus_type_asi[sc->sc_configtag->type],
+			(long long)(sc->sc_configaddr + 
+				PCITAG_OFFSET(tag) + reg),
+			(int)PCITAG_OFFSET(tag) + reg));
+
+		val = bus_space_read_4(sc->sc_configtag, sc->sc_configaddr,
+			PCITAG_OFFSET(tag) + reg);
+	}
+#ifdef DEBUG
+	else DPRINTF(SPDB_CONF, ("pci_conf_read: bogus pcitag %x\n",
+	    (int)PCITAG_OFFSET(tag)));
+#endif
+	DPRINTF(SPDB_CONF, (" returning %08x\n", (u_int)val));
+
+	return (val);
+}
+
+void
+psycho_pci_conf_write(pc, tag, reg, data)
+	pci_chipset_tag_t pc;
+	pcitag_t tag;
+	int reg;
+	pcireg_t data;
+{
+	struct psycho_pbm *pp = pc->cookie;
+	struct psycho_softc *sc = pp->pp_sc;
+
+	DPRINTF(SPDB_CONF, ("pci_conf_write: tag %lx; reg %x; data %x; ", 
+		(long)PCITAG_OFFSET(tag), reg, (int)data));
+	DPRINTF(SPDB_CONF, ("asi = %x; readaddr = %qx (offset = %x)\n",
+		bus_type_asi[sc->sc_configtag->type],
+		(long long)(sc->sc_configaddr + PCITAG_OFFSET(tag) + reg), 
+		(int)PCITAG_OFFSET(tag) + reg));
+
+	/* If we don't know it, just punt. */
+	if (PCITAG_NODE(tag) == -1) {
+		DPRINTF(SPDB_CONF, ("pci_config_write: bad addr"));
+		return;
+	}
+
+	bus_space_write_4(sc->sc_configtag, sc->sc_configaddr, 
+		PCITAG_OFFSET(tag) + reg, data);
+}