support for vt8231 from netbsd via pr3362 and tested by matthew.gream@pobox.com

1 files changed, 314 insertions, 0 deletions

diff --git a/sys/arch/i386/pci/via8231.c b/sys/arch/i386/pci/via8231.c
new file mode 100644
index 00000000000..62f52919f55
--- /dev/null
+++ b/sys/arch/i386/pci/via8231.c
@@ -0,0 +1,314 @@
+/*	$OpenBSD: via8231.c,v 1.1 2003/07/30 05:26:33 mickey Exp $	*/
+
+/*-
+ * Copyright (c) 1999 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
+ * NASA Ames Research Center.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *     This product includes software developed by the NetBSD
+ *     Foundation, Inc. and its contributors.
+ * 4. Neither the name of The NetBSD Foundation nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * Copyright (c) 2003, by Matthew Gream
+ * Copyright (c) 1999, by UCHIYAMA Yasushi
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. The name of the developer may NOT be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+/*
+ * Support for the VIA Technologies Inc. VIA8231 PCI to ISA Bridge
+ * Based upon documentation: VIA VT8231 South Bridge, Revision 1.85 (March 11, 2002), pg 73
+ * Derived from amd756.c
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/device.h>
+#include <sys/malloc.h>
+
+#include <machine/intr.h>
+#include <machine/bus.h>
+
+#include <dev/pci/pcivar.h>
+#include <dev/pci/pcireg.h>
+#include <dev/pci/pcidevs.h>
+
+#include <i386/pci/pcibiosvar.h>
+#include <i386/pci/via8231reg.h>
+
+struct via8231_handle {
+	bus_space_tag_t ph_iot;
+	bus_space_handle_t ph_regs_ioh;
+	pci_chipset_tag_t ph_pc;
+	pcitag_t ph_tag;
+};
+
+int via8231_getclink(pciintr_icu_handle_t, int, int *);
+int via8231_get_intr(pciintr_icu_handle_t, int, int *);
+int via8231_set_intr(pciintr_icu_handle_t, int, int);
+int via8231_get_trigger(pciintr_icu_handle_t, int, int *);
+int via8231_set_trigger(pciintr_icu_handle_t, int, int);
+#ifdef VIA8231_DEBUG
+static void via8231_pir_dump(const char*, struct via8231_handle *);
+#endif
+
+const struct pciintr_icu via8231_pci_icu = {
+	via8231_getclink,
+	via8231_get_intr,
+	via8231_set_intr,
+	via8231_get_trigger,
+	via8231_set_trigger,
+};
+
+struct mask_shft_pair {
+	int mask;
+	int shft;
+};
+static const struct mask_shft_pair via8231_trigger_cnfg[VIA8231_LINK_MAX+1] = {
+	{ (1<<3), 3 }, /*PINTA#*/
+	{ (1<<2), 2 }, /*PINTB#*/
+	{ (1<<1), 1 }, /*PINTC#*/
+	{ (1<<0), 0 }  /*PINTD#*/
+};
+static const struct mask_shft_pair via8231_routing_cnfg[VIA8231_LINK_MAX+1] = {
+	{ 0x0f,  0+4 }, /*PINTA#*/
+	{ 0x0f,  8+0 }, /*PINTB#*/
+	{ 0x0f,  8+4 }, /*PINTC#*/
+	{ 0x0f, 16+4 }  /*PINTD#*/
+};
+
+#define VIA8231_GET_TRIGGER_CNFG(reg, pirq) \
+	((reg & via8231_trigger_cnfg[pirq].mask) >> \
+		via8231_trigger_cnfg[pirq].shft)
+
+#define VIA8231_SET_TRIGGER_CNFG(reg, pirq, cfg) \
+	reg = (reg & ~via8231_trigger_cnfg[pirq].mask) | \
+		((cfg << via8231_trigger_cnfg[pirq].shft) & \
+			via8231_trigger_cnfg[pirq].mask)
+
+#define VIA8231_GET_ROUTING_CNFG(reg, pirq) \
+	(((reg) & via8231_routing_cnfg[pirq].mask) >> \
+		via8231_routing_cnfg[pirq].shft)
+
+#define VIA8231_SET_ROUTING_CNFG(reg, pirq, cfg) \
+	reg = (reg & ~via8231_routing_cnfg[pirq].mask) | \
+		((cfg << via8231_routing_cnfg[pirq].shft) & \
+			via8231_routing_cnfg[pirq].mask)
+
+
+int
+via8231_init(pc, iot, tag, ptagp, phandp)
+	pci_chipset_tag_t pc;
+	bus_space_tag_t iot;
+	pcitag_t tag;
+	pciintr_icu_tag_t *ptagp;
+	pciintr_icu_handle_t *phandp;
+{
+	struct via8231_handle *ph;
+
+	ph = malloc(sizeof(*ph), M_DEVBUF, M_NOWAIT);
+	if (ph == NULL)
+		return (1);
+
+	ph->ph_iot = iot;
+	ph->ph_pc = pc;
+	ph->ph_tag = tag;
+
+	*ptagp = &via8231_pci_icu;
+	*phandp = ph;
+
+#ifdef VIA8231_DEBUG
+	via8231_pir_dump("via8231_init", ph);
+#endif
+
+	return 0;
+}
+
+int
+via8231_getclink(v, link, clinkp)
+	pciintr_icu_handle_t v;
+	int link, *clinkp;
+{
+	if (VIA8231_LINK_LEGAL(link - 1) == 0)
+		return (1);
+
+	*clinkp = link - 1;
+	return (0);
+}
+
+int
+via8231_get_intr(v, clink, irqp)
+	pciintr_icu_handle_t v;
+	int clink, *irqp;
+{
+	struct via8231_handle *ph = v;
+	int reg, val;
+
+	if (VIA8231_LINK_LEGAL(clink) == 0)
+		return (1);
+
+	reg = VIA8231_GET_ROUTING(ph);
+	val = VIA8231_GET_ROUTING_CNFG(reg, clink);
+	*irqp = (val == VIA8231_ROUTING_CNFG_DISABLED) ?
+	    I386_PCI_INTERRUPT_LINE_NO_CONNECTION : val;
+
+	return (0);
+}
+
+int
+via8231_set_intr(v, clink, irq)
+	pciintr_icu_handle_t v;
+	int clink, irq;
+{
+	struct via8231_handle *ph = v;
+	int reg;
+
+	if (VIA8231_LINK_LEGAL(clink) == 0 || VIA8231_PIRQ_LEGAL(irq) == 0)
+		return (1);
+
+#ifdef VIA8231_DEBUG
+	printf("via8231_set_intr: link(%02x) --> irq(%02x)\n", clink, irq);
+	via8231_pir_dump("via8231_set_intr: ", ph);
+#endif
+
+	reg = VIA8231_GET_ROUTING(ph);
+	VIA8231_SET_ROUTING_CNFG(reg, clink, irq);
+	VIA8231_SET_ROUTING(ph, reg);
+
+	return (0);
+}
+
+int
+via8231_get_trigger(v, irq, triggerp)
+	pciintr_icu_handle_t v;
+	int irq, *triggerp;
+{
+	struct via8231_handle *ph = v;
+	int reg, clink, pciirq;
+
+	if (VIA8231_PIRQ_LEGAL(irq) == 0)
+		return (1);
+
+	for (clink = 0; clink <= VIA8231_LINK_MAX; clink++) {
+		via8231_get_intr(v, clink, &pciirq);
+		if (pciirq == irq) {
+			reg = VIA8231_GET_TRIGGER(ph);
+			switch (VIA8231_GET_TRIGGER_CNFG(reg, clink)) {
+			case VIA8231_TRIGGER_CNFG_LEVEL:
+				*triggerp = IST_LEVEL;
+				break;
+			case VIA8231_TRIGGER_CNFG_EDGE:
+				*triggerp = IST_EDGE;
+				break;
+			default:
+				return (1);
+			}
+			return (0);
+		}
+	}
+
+	return (1);
+}
+
+int
+via8231_set_trigger(v, irq, trigger)
+	pciintr_icu_handle_t v;
+	int irq, trigger;
+{
+	struct via8231_handle *ph = v;
+	int reg, clink, pciirq;
+
+	if (VIA8231_PIRQ_LEGAL(irq) == 0 || VIA8231_TRIG_LEGAL(trigger) == 0)
+		return (1);
+
+#ifdef VIA8231_DEBUG
+	printf("via8231_set_trig: irq(%02x) --> trig(%02x)\n", irq, trigger);
+	via8231_pir_dump("via8231_set_trig: ", ph);
+#endif
+
+	for (clink = 0; clink <= VIA8231_LINK_MAX; clink++) {
+		via8231_get_intr(v, clink, &pciirq);
+		if (pciirq == irq) {
+			reg = VIA8231_GET_ROUTING(ph);
+			switch (trigger) {
+			case IST_LEVEL:
+				VIA8231_SET_TRIGGER_CNFG(reg, clink,
+					VIA8231_TRIGGER_CNFG_LEVEL);
+				break;
+			case IST_EDGE:
+				VIA8231_SET_TRIGGER_CNFG(reg, clink,
+					VIA8231_TRIGGER_CNFG_EDGE);
+				break;
+			default:
+				return (1);
+			}
+			VIA8231_SET_ROUTING(ph, reg);
+			return (0);
+		}
+	}
+
+	return (1);
+}
+
+#ifdef VIA8231_DEBUG
+static void
+via8231_pir_dump(m, ph)
+	const char* m;
+	struct via8231_handle *ph;
+{
+	int a, b;
+
+	a = VIA8231_GET_TRIGGER(ph);
+	b = VIA8231_GET_ROUTING(ph);
+
+	printf("%s STATE: trigger(%02x), routing(%08x)\n", m, a, b);
+}
+#endif