sis85c503.c revision 1.4
1/* $OpenBSD: sis85c503.c,v 1.4 2000/08/02 02:42:50 mickey Exp $ */ 2/* $NetBSD: sis85c503.c,v 1.2 2000/07/18 11:24:09 soda Exp $ */ 3 4/*- 5 * Copyright (c) 1999 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 10 * NASA Ames Research Center. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the NetBSD 23 * Foundation, Inc. and its contributors. 24 * 4. Neither the name of The NetBSD Foundation nor the names of its 25 * contributors may be used to endorse or promote products derived 26 * from this software without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 29 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 30 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 31 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 32 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 33 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 34 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 35 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 36 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 37 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 38 * POSSIBILITY OF SUCH DAMAGE. 39 */ 40 41/* 42 * Copyright (c) 1999, by UCHIYAMA Yasushi 43 * All rights reserved. 44 * 45 * Redistribution and use in source and binary forms, with or without 46 * modification, are permitted provided that the following conditions 47 * are met: 48 * 1. Redistributions of source code must retain the above copyright 49 * notice, this list of conditions and the following disclaimer. 50 * 2. The name of the developer may NOT be used to endorse or promote products 51 * derived from this software without specific prior written permission. 52 * 53 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 54 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 55 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 56 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 57 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 58 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 59 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 60 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 61 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 62 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 63 * SUCH DAMAGE. 64 */ 65 66/* 67 * Support for the SiS 85c503 PCI-ISA bridge interrupt controller. 68 */ 69 70#include <sys/param.h> 71#include <sys/systm.h> 72#include <sys/device.h> 73 74#include <machine/intr.h> 75#include <machine/bus.h> 76 77#include <dev/pci/pcivar.h> 78#include <dev/pci/pcireg.h> 79#include <dev/pci/pcidevs.h> 80 81#include <i386/pci/pci_intr_fixup.h> 82#include <i386/pci/sis85c503reg.h> 83#include <i386/pci/piixvar.h> 84 85int sis85c503_getclink __P((pciintr_icu_handle_t, int, int *)); 86int sis85c503_get_intr __P((pciintr_icu_handle_t, int, int *)); 87int sis85c503_set_intr __P((pciintr_icu_handle_t, int, int)); 88 89const struct pciintr_icu sis85c503_pci_icu = { 90 sis85c503_getclink, 91 sis85c503_get_intr, 92 sis85c503_set_intr, 93 piix_get_trigger, 94 piix_set_trigger, 95}; 96 97int 98sis85c503_init(pc, iot, tag, ptagp, phandp) 99 pci_chipset_tag_t pc; 100 bus_space_tag_t iot; 101 pcitag_t tag; 102 pciintr_icu_tag_t *ptagp; 103 pciintr_icu_handle_t *phandp; 104{ 105 106 if (piix_init(pc, iot, tag, ptagp, phandp) == 0) { 107 *ptagp = &sis85c503_pci_icu; 108 return (0); 109 } 110 111 return (1); 112} 113 114int 115sis85c503_getclink(v, link, clinkp) 116 pciintr_icu_handle_t v; 117 int link, *clinkp; 118{ 119 120 /* Pattern 1: simple. */ 121 if (link >= 1 && link <= 4) { 122 *clinkp = SIS85C503_CFG_PIRQ_REGSTART + link - 1; 123 return (0); 124 } 125 126 /* Pattern 2: configuration register offset */ 127 if (link >= SIS85C503_CFG_PIRQ_REGSTART && 128 link <= SIS85C503_CFG_PIRQ_REGEND) { 129 *clinkp = link; 130 return (0); 131 } 132 133 return (1); 134} 135 136int 137sis85c503_get_intr(v, clink, irqp) 138 pciintr_icu_handle_t v; 139 int clink, *irqp; 140{ 141 struct piix_handle *ph = v; 142 pcireg_t reg; 143 144 if (SIS85C503_LEGAL_LINK(clink) == 0) 145 return (1); 146 147 reg = pci_conf_read(ph->ph_pc, ph->ph_tag, 148 SIS85C503_CFG_PIRQ_REGOFS(clink)); 149 reg = SIS85C503_CFG_PIRQ_REG(reg, clink); 150 151 if (reg & SIS85C503_CFG_PIRQ_ROUTE_DISABLE) 152 *irqp = 0xff; 153 else 154 *irqp = reg & SIS85C503_CFG_PIRQ_INTR_MASK; 155 156 return (0); 157} 158 159int 160sis85c503_set_intr(v, clink, irq) 161 pciintr_icu_handle_t v; 162 int clink, irq; 163{ 164 struct piix_handle *ph = v; 165 int shift; 166 pcireg_t reg; 167 168 if (SIS85C503_LEGAL_LINK(clink) == 0 || SIS85C503_LEGAL_IRQ(irq) == 0) 169 return (1); 170 171 reg = pci_conf_read(ph->ph_pc, ph->ph_tag, 172 SIS85C503_CFG_PIRQ_REGOFS(clink)); 173 shift = SIS85C503_CFG_PIRQ_SHIFT(clink); 174 reg &= ~((SIS85C503_CFG_PIRQ_ROUTE_DISABLE | 175 SIS85C503_CFG_PIRQ_INTR_MASK) << shift); 176 reg |= (irq << shift); 177 pci_conf_write(ph->ph_pc, ph->ph_tag, SIS85C503_CFG_PIRQ_REGOFS(clink), 178 reg); 179 180 return (0); 181} 182