233 lines
8.1 KiB
C
233 lines
8.1 KiB
C
/* $NetBSD: ali1543.c,v 1.6 2005/02/03 21:35:44 perry Exp $ */
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/*
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* Copyright (c) 2001
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* HAYAKAWA Koichi. 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. 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. The name of the author 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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* 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,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* 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 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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/* HAYAKAWA Koichi wrote ALi 1543 PCI ICU code basing on VIA82C586 driver */
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: ali1543.c,v 1.6 2005/02/03 21:35:44 perry Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/errno.h>
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#include <sys/device.h>
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#include <sys/malloc.h>
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#include <sys/proc.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/piixvar.h>
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int ali1543_getclink(pciintr_icu_handle_t, int, int *);
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int ali1543_get_intr(pciintr_icu_handle_t, int, int *);
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int ali1543_set_intr(pciintr_icu_handle_t, int, int);
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const struct pciintr_icu ali1543_icu = {
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ali1543_getclink,
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ali1543_get_intr,
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ali1543_set_intr,
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piix_get_trigger,
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piix_set_trigger,
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};
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/*
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* Linux source code (linux/arch/i386/kernel/pci-irq.c) says that the
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* irq order of ALi PCI ICU is shuffled.
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*/
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static const int ali1543_intr_shuffle_get[16] = {
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0, 9, 3, 10, 4, 5, 7, 6, 1, 11, 0, 12, 0, 14, 0, 15
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};
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static const int ali1543_intr_shuffle_set[16] = {
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0, 8, 0, 2, 4, 5, 7, 6, 0, 1, 3, 9, 11, 0, 13, 15
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};
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#define ALI1543_IRQ_MASK 0xdefa
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#define ALI1543_LEGAL_LINK(link) (((link) >= 0) && ((link) <= 7))
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#define ALI1543_LEGAL_IRQ(irq) ((1 << (irq)) & ALI1543_IRQ_MASK)
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#define ALI1543_INTR_CFG_REG 0x48
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#define ALI1543_INTR_PIRQA_SHIFT 0
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#define ALI1543_INTR_PIRQA_MASK 0x0000000f
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#define ALI1543_INTR_PIRQB_SHIFT 4
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#define ALI1543_INTR_PIRQB_MASK 0x000000f0
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#define ALI1543_INTR_PIRQC_SHIFT 8
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#define ALI1543_INTR_PIRQC_MASK 0x00000f00
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#define ALI1543_INTR_PIRQD_SHIFT 12
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#define ALI1543_INTR_PIRQD_MASK 0x0000f000
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#define ALI1543_INTR_PIRQ_SHIFT(clink) ((clink)*4)
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#define ALI1543_INTR_PIRQ_IRQ(reg, clink) \
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(((reg) >> ((clink)*4)) & 0x0f)
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#define ALI1543_PIRQ(reg, clink) \
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ali1543_intr_shuffle_get[ALI1543_INTR_PIRQ_IRQ((reg), (clink))]
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int
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ali1543_init(pci_chipset_tag_t pc, bus_space_tag_t iot, pcitag_t tag,
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pciintr_icu_tag_t *ptagp, pciintr_icu_handle_t *phandp)
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{
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if (piix_init(pc, iot, tag, ptagp, phandp) == 0) {
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*ptagp = &ali1543_icu;
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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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ali1543_getclink(pciintr_icu_handle_t v, int link, int *clinkp)
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{
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if (ALI1543_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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ali1543_get_intr(pciintr_icu_handle_t v, int clink, int *irqp)
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{
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struct piix_handle *ph = v;
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pcireg_t reg;
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int val;
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if (ALI1543_LEGAL_LINK(clink) == 0)
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return (1);
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reg = pci_conf_read(ph->ph_pc, ph->ph_tag, ALI1543_INTR_CFG_REG);
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#ifdef DEBUG_1543
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printf("ali1543: PIRQ reg 0x%08x\n", reg); /* XXX debug */
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#endif /* DEBUG_1543 */
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val = ALI1543_PIRQ(reg, clink);
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*irqp = (val == 0) ?
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X86_PCI_INTERRUPT_LINE_NO_CONNECTION : val;
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return (0);
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}
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int
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ali1543_set_intr(pciintr_icu_handle_t v, int clink, int irq)
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{
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struct piix_handle *ph = v;
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int shift, val;
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pcireg_t reg;
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if (ALI1543_LEGAL_LINK(clink) == 0 || ALI1543_LEGAL_IRQ(irq) == 0)
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return (1);
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reg = pci_conf_read(ph->ph_pc, ph->ph_tag, ALI1543_INTR_CFG_REG);
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ali1543_get_intr(v, clink, &val);
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shift = ALI1543_INTR_PIRQ_SHIFT(clink);
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reg &= ~(0x0f << shift);
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reg |= (ali1543_intr_shuffle_set[irq] << shift);
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pci_conf_write(ph->ph_pc, ph->ph_tag, ALI1543_INTR_CFG_REG, reg);
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if (ali1543_get_intr(v, clink, &val) != 0 || val != irq)
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return (1);
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return (0);
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}
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