1 /* $NetBSD: sis85c503.c,v 1.8 2006/11/16 01:32:39 christos 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 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 /* 41 * Copyright (c) 1999, by UCHIYAMA Yasushi 42 * All rights reserved. 43 * 44 * Redistribution and use in source and binary forms, with or without 45 * modification, are permitted provided that the following conditions 46 * are met: 47 * 1. Redistributions of source code must retain the above copyright 48 * notice, this list of conditions and the following disclaimer. 49 * 2. The name of the developer may NOT be used to endorse or promote products 50 * derived from this software without specific prior written permission. 51 * 52 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 53 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 54 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 55 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 56 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 57 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 58 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 59 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 60 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 61 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 62 * SUCH DAMAGE. 63 */ 64 65 /* 66 * Support for the SiS 85c503 PCI-ISA bridge interrupt controller. 67 */ 68 69 #include <sys/cdefs.h> 70 __KERNEL_RCSID(0, "$NetBSD: sis85c503.c,v 1.8 2006/11/16 01:32:39 christos Exp $"); 71 72 #include <sys/param.h> 73 #include <sys/systm.h> 74 #include <sys/device.h> 75 76 #include <machine/intr.h> 77 #include <machine/bus.h> 78 79 #include <dev/pci/pcivar.h> 80 #include <dev/pci/pcireg.h> 81 #include <dev/pci/pcidevs.h> 82 83 #include <i386/pci/pci_intr_fixup.h> 84 #include <i386/pci/sis85c503reg.h> 85 #include <i386/pci/piixvar.h> 86 87 int sis85c503_getclink(pciintr_icu_handle_t, int, int *); 88 int sis85c503_get_intr(pciintr_icu_handle_t, int, int *); 89 int sis85c503_set_intr(pciintr_icu_handle_t, int, int); 90 91 const struct pciintr_icu sis85c503_pci_icu = { 92 sis85c503_getclink, 93 sis85c503_get_intr, 94 sis85c503_set_intr, 95 piix_get_trigger, 96 piix_set_trigger, 97 }; 98 99 int 100 sis85c503_init(pci_chipset_tag_t pc, bus_space_tag_t iot, pcitag_t tag, 101 pciintr_icu_tag_t *ptagp, pciintr_icu_handle_t *phandp) 102 { 103 104 if (piix_init(pc, iot, tag, ptagp, phandp) == 0) { 105 *ptagp = &sis85c503_pci_icu; 106 return (0); 107 } 108 109 return (1); 110 } 111 112 int 113 sis85c503_getclink(pciintr_icu_handle_t v, int link, int *clinkp) 114 { 115 116 /* Pattern 1: simple. */ 117 if (link >= 1 && link <= 4) { 118 *clinkp = SIS85C503_CFG_PIRQ_REGSTART + link - 1; 119 return (0); 120 } 121 122 /* Pattern 2: configuration register offset */ 123 if (link >= SIS85C503_CFG_PIRQ_REGSTART && 124 link <= SIS85C503_CFG_PIRQ_REGEND) { 125 *clinkp = link; 126 return (0); 127 } 128 129 return (1); 130 } 131 132 int 133 sis85c503_get_intr(pciintr_icu_handle_t v, int clink, int *irqp) 134 { 135 struct piix_handle *ph = v; 136 pcireg_t reg; 137 138 if (SIS85C503_LEGAL_LINK(clink) == 0) 139 return (1); 140 141 reg = pci_conf_read(ph->ph_pc, ph->ph_tag, 142 SIS85C503_CFG_PIRQ_REGOFS(clink)); 143 reg = SIS85C503_CFG_PIRQ_REG(reg, clink); 144 145 if (reg & SIS85C503_CFG_PIRQ_ROUTE_DISABLE) 146 *irqp = X86_PCI_INTERRUPT_LINE_NO_CONNECTION; 147 else 148 *irqp = reg & SIS85C503_CFG_PIRQ_INTR_MASK; 149 150 return (0); 151 } 152 153 int 154 sis85c503_set_intr(pciintr_icu_handle_t v, int clink, int irq) 155 { 156 struct piix_handle *ph = v; 157 int shift; 158 pcireg_t reg; 159 160 if (SIS85C503_LEGAL_LINK(clink) == 0 || SIS85C503_LEGAL_IRQ(irq) == 0) 161 return (1); 162 163 reg = pci_conf_read(ph->ph_pc, ph->ph_tag, 164 SIS85C503_CFG_PIRQ_REGOFS(clink)); 165 shift = SIS85C503_CFG_PIRQ_SHIFT(clink); 166 reg &= ~((SIS85C503_CFG_PIRQ_ROUTE_DISABLE | 167 SIS85C503_CFG_PIRQ_INTR_MASK) << shift); 168 reg |= (irq << shift); 169 pci_conf_write(ph->ph_pc, ph->ph_tag, SIS85C503_CFG_PIRQ_REGOFS(clink), 170 reg); 171 172 return (0); 173 } 174