1/* $NetBSD: sis85c503.c,v 1.9 2008/04/28 20:23:25 martin Exp $ */ 2 3/*- 4 * Copyright (c) 1999 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 * NASA Ames Research Center. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33/* 34 * Copyright (c) 1999, by UCHIYAMA Yasushi 35 * All rights reserved. 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 1. Redistributions of source code must retain the above copyright 41 * notice, this list of conditions and the following disclaimer. 42 * 2. The name of the developer may NOT be used to endorse or promote products 43 * derived from this software without specific prior written permission. 44 * 45 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 46 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 47 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 48 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 49 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 50 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 51 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 52 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 53 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 54 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 55 * SUCH DAMAGE. 56 */ 57 58/* 59 * Support for the SiS 85c503 PCI-ISA bridge interrupt controller. 60 */ 61 62#include <sys/cdefs.h> 63__KERNEL_RCSID(0, "$NetBSD: sis85c503.c,v 1.9 2008/04/28 20:23:25 martin Exp $"); 64 65#include <sys/param.h> 66#include <sys/systm.h> 67#include <sys/device.h> 68 69#include <machine/intr.h> 70#include <sys/bus.h> 71 72#include <dev/pci/pcivar.h> 73#include <dev/pci/pcireg.h> 74#include <dev/pci/pcidevs.h> 75 76#include <i386/pci/pci_intr_fixup.h> 77#include <i386/pci/sis85c503reg.h> 78#include <i386/pci/piixvar.h> 79 80int sis85c503_getclink(pciintr_icu_handle_t, int, int *); 81int sis85c503_get_intr(pciintr_icu_handle_t, int, int *); 82int sis85c503_set_intr(pciintr_icu_handle_t, int, int); 83 84const struct pciintr_icu sis85c503_pci_icu = { 85 sis85c503_getclink, 86 sis85c503_get_intr, 87 sis85c503_set_intr, 88 piix_get_trigger, 89 piix_set_trigger, 90}; 91 92int 93sis85c503_init(pci_chipset_tag_t pc, bus_space_tag_t iot, pcitag_t tag, 94 pciintr_icu_tag_t *ptagp, pciintr_icu_handle_t *phandp) 95{ 96 97 if (piix_init(pc, iot, tag, ptagp, phandp) == 0) { 98 *ptagp = &sis85c503_pci_icu; 99 return (0); 100 } 101 102 return (1); 103} 104 105int 106sis85c503_getclink(pciintr_icu_handle_t v, int link, int *clinkp) 107{ 108 109 /* Pattern 1: simple. */ 110 if (link >= 1 && link <= 4) { 111 *clinkp = SIS85C503_CFG_PIRQ_REGSTART + link - 1; 112 return (0); 113 } 114 115 /* Pattern 2: configuration register offset */ 116 if (link >= SIS85C503_CFG_PIRQ_REGSTART && 117 link <= SIS85C503_CFG_PIRQ_REGEND) { 118 *clinkp = link; 119 return (0); 120 } 121 122 return (1); 123} 124 125int 126sis85c503_get_intr(pciintr_icu_handle_t v, int clink, int *irqp) 127{ 128 struct piix_handle *ph = v; 129 pcireg_t reg; 130 131 if (SIS85C503_LEGAL_LINK(clink) == 0) 132 return (1); 133 134 reg = pci_conf_read(ph->ph_pc, ph->ph_tag, 135 SIS85C503_CFG_PIRQ_REGOFS(clink)); 136 reg = SIS85C503_CFG_PIRQ_REG(reg, clink); 137 138 if (reg & SIS85C503_CFG_PIRQ_ROUTE_DISABLE) 139 *irqp = X86_PCI_INTERRUPT_LINE_NO_CONNECTION; 140 else 141 *irqp = reg & SIS85C503_CFG_PIRQ_INTR_MASK; 142 143 return (0); 144} 145 146int 147sis85c503_set_intr(pciintr_icu_handle_t v, int clink, int irq) 148{ 149 struct piix_handle *ph = v; 150 int shift; 151 pcireg_t reg; 152 153 if (SIS85C503_LEGAL_LINK(clink) == 0 || SIS85C503_LEGAL_IRQ(irq) == 0) 154 return (1); 155 156 reg = pci_conf_read(ph->ph_pc, ph->ph_tag, 157 SIS85C503_CFG_PIRQ_REGOFS(clink)); 158 shift = SIS85C503_CFG_PIRQ_SHIFT(clink); 159 reg &= ~((SIS85C503_CFG_PIRQ_ROUTE_DISABLE | 160 SIS85C503_CFG_PIRQ_INTR_MASK) << shift); 161 reg |= (irq << shift); 162 pci_conf_write(ph->ph_pc, ph->ph_tag, SIS85C503_CFG_PIRQ_REGOFS(clink), 163 reg); 164 165 return (0); 166} 167