/* $NetBSD: opti82c558.c,v 1.10 2011/07/01 17:37:26 dyoung 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 Opti 82c558 PCI-ISA bridge interrupt controller. */ #include __KERNEL_RCSID(0, "$NetBSD: opti82c558.c,v 1.10 2011/07/01 17:37:26 dyoung Exp $"); #include #include #include #include #include #include #include #include #include #include #include int opti82c558_getclink(pciintr_icu_handle_t, int, int *); int opti82c558_get_intr(pciintr_icu_handle_t, int, int *); int opti82c558_set_intr(pciintr_icu_handle_t, int, int); int opti82c558_get_trigger(pciintr_icu_handle_t, int, int *); int opti82c558_set_trigger(pciintr_icu_handle_t, int, int); const struct pciintr_icu opti82c558_pci_icu = { opti82c558_getclink, opti82c558_get_intr, opti82c558_set_intr, opti82c558_get_trigger, opti82c558_set_trigger, }; struct opti82c558_handle { pci_chipset_tag_t ph_pc; pcitag_t ph_tag; }; static const int viper_pirq_decode[] = { -1, 5, 9, 10, 11, 12, 14, 15 }; static const int viper_pirq_encode[] = { -1, /* 0 */ -1, /* 1 */ -1, /* 2 */ -1, /* 3 */ -1, /* 4 */ VIPER_PIRQ_5, /* 5 */ -1, /* 6 */ -1, /* 7 */ -1, /* 8 */ VIPER_PIRQ_9, /* 9 */ VIPER_PIRQ_10, /* 10 */ VIPER_PIRQ_11, /* 11 */ VIPER_PIRQ_12, /* 12 */ -1, /* 13 */ VIPER_PIRQ_14, /* 14 */ VIPER_PIRQ_15, /* 15 */ }; int opti82c558_init(pci_chipset_tag_t pc, bus_space_tag_t iot, pcitag_t tag, pciintr_icu_tag_t *ptagp, pciintr_icu_handle_t *phandp) { struct opti82c558_handle *ph; ph = malloc(sizeof(*ph), M_DEVBUF, M_NOWAIT); if (ph == NULL) return (1); ph->ph_pc = pc; ph->ph_tag = tag; *ptagp = &opti82c558_pci_icu; *phandp = ph; return (0); } int opti82c558_getclink(pciintr_icu_handle_t v, int link, int *clinkp) { if (VIPER_LEGAL_LINK(link - 1)) { *clinkp = link - 1; return (0); } return (1); } int opti82c558_get_intr(pciintr_icu_handle_t v, int clink, int *irqp) { struct opti82c558_handle *ph = v; pcireg_t reg; int val; if (VIPER_LEGAL_LINK(clink) == 0) return (1); reg = pci_conf_read(ph->ph_pc, ph->ph_tag, VIPER_CFG_PIRQ); val = VIPER_PIRQ(reg, clink); *irqp = (val == VIPER_PIRQ_NONE) ? X86_PCI_INTERRUPT_LINE_NO_CONNECTION : viper_pirq_decode[val]; return (0); } int opti82c558_set_intr(pciintr_icu_handle_t v, int clink, int irq) { struct opti82c558_handle *ph = v; int shift; pcireg_t reg; if (VIPER_LEGAL_LINK(clink) == 0 || VIPER_LEGAL_IRQ(irq) == 0) return (1); reg = pci_conf_read(ph->ph_pc, ph->ph_tag, VIPER_CFG_PIRQ); shift = VIPER_PIRQ_SELECT_SHIFT * clink; reg &= ~(VIPER_PIRQ_SELECT_MASK << shift); reg |= (viper_pirq_encode[irq] << shift); pci_conf_write(ph->ph_pc, ph->ph_tag, VIPER_CFG_PIRQ, reg); return (0); } int opti82c558_get_trigger(pciintr_icu_handle_t v, int irq, int *triggerp) { struct opti82c558_handle *ph = v; pcireg_t reg; if (VIPER_LEGAL_IRQ(irq) == 0) { /* ISA IRQ? */ *triggerp = IST_EDGE; return (0); } reg = pci_conf_read(ph->ph_pc, ph->ph_tag, VIPER_CFG_PIRQ); if ((reg >> (VIPER_CFG_TRIGGER_SHIFT + viper_pirq_encode[irq])) & 1) *triggerp = IST_LEVEL; else *triggerp = IST_EDGE; return (0); } int opti82c558_set_trigger(pciintr_icu_handle_t v, int irq, int trigger) { struct opti82c558_handle *ph = v; int shift; pcireg_t reg; if (VIPER_LEGAL_IRQ(irq) == 0) { /* ISA IRQ? */ return ((trigger != IST_LEVEL) ? 0 : 1); } reg = pci_conf_read(ph->ph_pc, ph->ph_tag, VIPER_CFG_PIRQ); shift = (VIPER_CFG_TRIGGER_SHIFT + viper_pirq_encode[irq]); if (trigger == IST_LEVEL) reg |= (1 << shift); else reg &= ~(1 << shift); pci_conf_write(ph->ph_pc, ph->ph_tag, VIPER_CFG_PIRQ, reg); return (0); }