250 lines
7.0 KiB
C
250 lines
7.0 KiB
C
/* $NetBSD: opti82c558.c,v 1.2 2000/07/18 11:24:09 soda Exp $ */
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/*-
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* Copyright (c) 1999 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
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* NASA Ames Research Center.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Copyright (c) 1999, by UCHIYAMA Yasushi
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. The name of the developer may NOT be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* Support for the Opti 82c558 PCI-ISA bridge interrupt controller.
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <sys/malloc.h>
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#include <machine/intr.h>
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#include <machine/bus.h>
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#include <dev/pci/pcivar.h>
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#include <dev/pci/pcireg.h>
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#include <dev/pci/pcidevs.h>
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#include <i386/pci/pci_intr_fixup.h>
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#include <i386/pci/opti82c558reg.h>
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int opti82c558_getclink __P((pciintr_icu_handle_t, int, int *));
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int opti82c558_get_intr __P((pciintr_icu_handle_t, int, int *));
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int opti82c558_set_intr __P((pciintr_icu_handle_t, int, int));
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int opti82c558_get_trigger __P((pciintr_icu_handle_t, int, int *));
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int opti82c558_set_trigger __P((pciintr_icu_handle_t, int, int));
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const struct pciintr_icu opti82c558_pci_icu = {
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opti82c558_getclink,
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opti82c558_get_intr,
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opti82c558_set_intr,
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opti82c558_get_trigger,
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opti82c558_set_trigger,
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};
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struct opti82c558_handle {
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pci_chipset_tag_t ph_pc;
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pcitag_t ph_tag;
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};
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static const int viper_pirq_decode[] = {
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-1, 5, 9, 10, 11, 12, 14, 15
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};
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static const int viper_pirq_encode[] = {
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-1, /* 0 */
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-1, /* 1 */
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-1, /* 2 */
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-1, /* 3 */
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-1, /* 4 */
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VIPER_PIRQ_5, /* 5 */
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-1, /* 6 */
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-1, /* 7 */
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-1, /* 8 */
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VIPER_PIRQ_9, /* 9 */
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VIPER_PIRQ_10, /* 10 */
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VIPER_PIRQ_11, /* 11 */
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VIPER_PIRQ_12, /* 12 */
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-1, /* 13 */
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VIPER_PIRQ_14, /* 14 */
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VIPER_PIRQ_15, /* 15 */
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};
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int
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opti82c558_init(pc, iot, tag, ptagp, phandp)
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pci_chipset_tag_t pc;
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bus_space_tag_t iot;
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pcitag_t tag;
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pciintr_icu_tag_t *ptagp;
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pciintr_icu_handle_t *phandp;
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{
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struct opti82c558_handle *ph;
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ph = malloc(sizeof(*ph), M_DEVBUF, M_NOWAIT);
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if (ph == NULL)
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return (1);
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ph->ph_pc = pc;
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ph->ph_tag = tag;
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*ptagp = &opti82c558_pci_icu;
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*phandp = ph;
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return (0);
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}
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int
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opti82c558_getclink(v, link, clinkp)
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pciintr_icu_handle_t v;
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int link, *clinkp;
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{
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if (VIPER_LEGAL_LINK(link - 1)) {
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*clinkp = link - 1;
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return (0);
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}
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return (1);
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}
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int
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opti82c558_get_intr(v, clink, irqp)
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pciintr_icu_handle_t v;
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int clink, *irqp;
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{
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struct opti82c558_handle *ph = v;
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pcireg_t reg;
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int val;
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if (VIPER_LEGAL_LINK(clink) == 0)
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return (1);
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reg = pci_conf_read(ph->ph_pc, ph->ph_tag, VIPER_CFG_PIRQ);
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val = VIPER_PIRQ(reg, clink);
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*irqp = (val == VIPER_PIRQ_NONE) ?
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I386_PCI_INTERRUPT_LINE_NO_CONNECTION : viper_pirq_decode[val];
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return (0);
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}
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int
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opti82c558_set_intr(v, clink, irq)
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pciintr_icu_handle_t v;
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int clink, irq;
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{
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struct opti82c558_handle *ph = v;
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int shift;
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pcireg_t reg;
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if (VIPER_LEGAL_LINK(clink) == 0 || VIPER_LEGAL_IRQ(irq) == 0)
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return (1);
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reg = pci_conf_read(ph->ph_pc, ph->ph_tag, VIPER_CFG_PIRQ);
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shift = VIPER_PIRQ_SELECT_SHIFT * clink;
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reg &= ~(VIPER_PIRQ_SELECT_MASK << shift);
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reg |= (viper_pirq_encode[irq] << shift);
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pci_conf_write(ph->ph_pc, ph->ph_tag, VIPER_CFG_PIRQ, reg);
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return (0);
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}
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int
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opti82c558_get_trigger(v, irq, triggerp)
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pciintr_icu_handle_t v;
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int irq, *triggerp;
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{
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struct opti82c558_handle *ph = v;
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pcireg_t reg;
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if (VIPER_LEGAL_IRQ(irq) == 0) {
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/* ISA IRQ? */
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*triggerp = IST_EDGE;
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return (0);
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}
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reg = pci_conf_read(ph->ph_pc, ph->ph_tag, VIPER_CFG_PIRQ);
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if ((reg >> (VIPER_CFG_TRIGGER_SHIFT + viper_pirq_encode[irq])) & 1)
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*triggerp = IST_LEVEL;
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else
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*triggerp = IST_EDGE;
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return (0);
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}
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int
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opti82c558_set_trigger(v, irq, trigger)
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pciintr_icu_handle_t v;
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int irq, trigger;
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{
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struct opti82c558_handle *ph = v;
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int shift;
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pcireg_t reg;
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if (VIPER_LEGAL_IRQ(irq) == 0) {
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/* ISA IRQ? */
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return ((trigger != IST_LEVEL) ? 0 : 1);
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}
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reg = pci_conf_read(ph->ph_pc, ph->ph_tag, VIPER_CFG_PIRQ);
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shift = (VIPER_CFG_TRIGGER_SHIFT + viper_pirq_encode[irq]);
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if (trigger == IST_LEVEL)
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reg |= (1 << shift);
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else
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reg &= ~(1 << shift);
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pci_conf_write(ph->ph_pc, ph->ph_tag, VIPER_CFG_PIRQ, reg);
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return (0);
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}
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