/* $OpenBSD: sis85c503.c,v 1.9 2023/01/30 10:49:05 jsg Exp $ */ /* $NetBSD: sis85c503.c,v 1.2 2000/07/18 11:24:09 soda Exp $ */ /*- * Copyright (c) 1999 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, * NASA Ames Research Center. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ /* * Copyright (c) 1999, by UCHIYAMA Yasushi * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. The name of the developer may NOT be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ /* * Support for the SiS 85c503 PCI-ISA bridge interrupt controller. */ #include #include #include #include #include #include #include #include int sis85c503_getclink(pciintr_icu_handle_t, int, int *); int sis85c503_get_intr(pciintr_icu_handle_t, int, int *); int sis85c503_set_intr(pciintr_icu_handle_t, int, int); const struct pciintr_icu sis85c503_pci_icu = { sis85c503_getclink, sis85c503_get_intr, sis85c503_set_intr, piix_get_trigger, piix_set_trigger, }; int sis85c503_init(pci_chipset_tag_t pc, bus_space_tag_t iot, pcitag_t tag, pciintr_icu_tag_t *ptagp, pciintr_icu_handle_t *phandp) { if (piix_init(pc, iot, tag, ptagp, phandp) == 0) { *ptagp = &sis85c503_pci_icu; return (0); } return (1); } int sis85c503_getclink(pciintr_icu_handle_t v, int link, int *clinkp) { /* Pattern 1: simple. */ if (link >= 1 && link <= 4) { *clinkp = SIS85C503_CFG_PIRQ_REGSTART + link - 1; return (0); } /* Pattern 2: configuration register offset */ if (link >= SIS85C503_CFG_PIRQ_REGSTART && link <= SIS85C503_CFG_PIRQ_REGEND) { *clinkp = link; return (0); } return (1); } int sis85c503_get_intr(pciintr_icu_handle_t v, int clink, int *irqp) { struct piix_handle *ph = v; pcireg_t reg; if (SIS85C503_LEGAL_LINK(clink) == 0) return (1); reg = pci_conf_read(ph->ph_pc, ph->ph_tag, SIS85C503_CFG_PIRQ_REGOFS(clink)); reg = SIS85C503_CFG_PIRQ_REG(reg, clink); if (reg & SIS85C503_CFG_PIRQ_ROUTE_DISABLE) *irqp = 0xff; else *irqp = reg & SIS85C503_CFG_PIRQ_INTR_MASK; return (0); } int sis85c503_set_intr(pciintr_icu_handle_t v, int clink, int irq) { struct piix_handle *ph = v; int shift; pcireg_t reg; if (SIS85C503_LEGAL_LINK(clink) == 0 || SIS85C503_LEGAL_IRQ(irq) == 0) return (1); reg = pci_conf_read(ph->ph_pc, ph->ph_tag, SIS85C503_CFG_PIRQ_REGOFS(clink)); shift = SIS85C503_CFG_PIRQ_SHIFT(clink); reg &= ~((SIS85C503_CFG_PIRQ_ROUTE_DISABLE | SIS85C503_CFG_PIRQ_INTR_MASK) << shift); reg |= (irq << shift); pci_conf_write(ph->ph_pc, ph->ph_tag, SIS85C503_CFG_PIRQ_REGOFS(clink), reg); return (0); }