/* $NetBSD: via8231.c,v 1.5 2014/01/25 21:11:03 christos Exp $ */ /* OpenBSD: via8231.c,v 1.6 2005/10/27 16:41:06 mickey 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) 2005, by Michael Shalayeff * Copyright (c) 2003, by Matthew Gream * 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 VIA Technologies Inc. VIA VT823[1357] PCI to ISA Bridge * Based upon documentation: * 1. VIA VT8231 South Bridge, Revision 1.85 (March 11, 2002), pg 73 * 2. VIA VT8237R South Bridge, Revision 2.06 (December 15, 2004), pg 100 * Derived from amd756.c */ #include __KERNEL_RCSID(0, "$NetBSD: via8231.c,v 1.5 2014/01/25 21:11:03 christos Exp $"); #include #include #include #include #include #include #include #include #include #include #include struct via8231_handle { bus_space_tag_t ph_iot; bus_space_handle_t ph_regs_ioh; pci_chipset_tag_t ph_pc; pcitag_t ph_tag; int flags; #define VT8237 0x0001 }; int via8231_getclink(pciintr_icu_handle_t, int, int *); int via8231_get_intr(pciintr_icu_handle_t, int, int *); int via8231_set_intr(pciintr_icu_handle_t, int, int); int via8231_get_trigger(pciintr_icu_handle_t, int, int *); int via8231_set_trigger(pciintr_icu_handle_t, int, int); #ifdef VIA8231_DEBUG static void via8231_pir_dump(const char*, struct via8231_handle *); #endif const struct pciintr_icu via8231_pci_icu = { via8231_getclink, via8231_get_intr, via8231_set_intr, via8231_get_trigger, via8231_set_trigger, }; struct mask_shft_pair { int mask; int shft; }; static const struct mask_shft_pair via8231_routing_cnfg[VIA8231_LINK_MAX+1] = { { 0x0f, 0+4 }, /*PINTA#*/ { 0x0f, 8+0 }, /*PINTB#*/ { 0x0f, 8+4 }, /*PINTC#*/ { 0x0f, 16+4 } /*PINTD#*/ }; #define VIA8231_GET_TRIGGER_CNFG(reg, pirq) \ ((reg) & (1 << (3 - (clink & 3)))) #define VIA8231_SET_TRIGGER_CNFG(reg, clink, cfg) \ (((reg) & ~(1 << (3 - (clink & 3)))) | ((cfg) << (3 - (clink & 3)))) #define VIA8231_GET_ROUTING_CNFG(reg, pirq) \ (((reg) >> via8231_routing_cnfg[(pirq)].shft) & \ via8231_routing_cnfg[(pirq)].mask) #define VIA8231_SET_ROUTING_CNFG(reg, pirq, cfg) \ (((reg) & ~(via8231_routing_cnfg[(pirq)].mask << \ via8231_routing_cnfg[(pirq)].shft)) | \ (((cfg) & via8231_routing_cnfg[(pirq)].mask) << \ via8231_routing_cnfg[(pirq)].shft)) int via8231_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 via8231_handle *ph; pcireg_t id; ph = malloc(sizeof(*ph), M_DEVBUF, M_NOWAIT); if (ph == NULL) return (1); ph->ph_iot = iot; ph->ph_pc = pc; ph->ph_tag = tag; id = pci_conf_read(pc, tag, PCI_ID_REG); ph->flags = PCI_VENDOR(id) == PCI_VENDOR_VIATECH && PCI_PRODUCT(id) == PCI_PRODUCT_VIATECH_VT8231? 0 : VT8237; *ptagp = &via8231_pci_icu; *phandp = ph; #ifdef VIA8231_DEBUG via8231_pir_dump("via8231_init", ph); #endif return 0; } int via8231_getclink(pciintr_icu_handle_t v, int link, int *clinkp) { struct via8231_handle *ph = v; if ((ph->flags & VT8237) && !VIA8237_LINK_LEGAL(link - 1)) return (1); if (!(ph->flags & VT8237) && !VIA8231_LINK_LEGAL(link - 1)) return (1); *clinkp = link - 1; return (0); } int via8231_get_intr(pciintr_icu_handle_t v, int clink, int *irqp) { struct via8231_handle *ph = v; int reg, val; if (VIA8237_LINK_LEGAL(clink) == 0) return (1); if (VIA8231_LINK_LEGAL(clink)) { reg = VIA8231_GET_ROUTING(ph); val = VIA8231_GET_ROUTING_CNFG(reg, clink); } else { reg = VIA8237_GET_ROUTING(ph); val = (reg >> ((clink & 3) * 4)) & 0xf; } *irqp = (val == VIA8231_ROUTING_CNFG_DISABLED) ? X86_PCI_INTERRUPT_LINE_NO_CONNECTION : val; return (0); } int via8231_set_intr(pciintr_icu_handle_t v, int clink, int irq) { struct via8231_handle *ph = v; int reg; if (VIA8237_LINK_LEGAL(clink) == 0 || VIA8231_PIRQ_LEGAL(irq) == 0) return (1); #ifdef VIA8231_DEBUG printf("via8231_set_intr: link(%02x) --> irq(%02x)\n", clink, irq); via8231_pir_dump("via8231_set_intr: ", ph); #endif if (VIA8231_LINK_LEGAL(clink)) { reg = VIA8231_GET_ROUTING(ph); VIA8231_SET_ROUTING(ph, VIA8231_SET_ROUTING_CNFG(reg, clink, irq)); } else { reg = VIA8237_GET_ROUTING(ph); VIA8237_SET_ROUTING(ph, (reg & ~(0xf << (clink & 3))) | ((irq & 0xf) << (clink & 3))); } return (0); } int via8231_get_trigger(pciintr_icu_handle_t v, int irq, int *triggerp) { struct via8231_handle *ph = v; int reg, clink, m, pciirq = 0; /* XXX: GCC */ if (VIA8231_PIRQ_LEGAL(irq) == 0) return (1); m = ph->flags & VT8237? VIA8237_LINK_MAX : VIA8231_LINK_MAX; for (clink = 0; clink <= m; clink++) { via8231_get_intr(v, clink, &pciirq); if (pciirq == irq) { reg = VIA8231_LINK_LEGAL(clink)? VIA8231_GET_TRIGGER(ph): VIA8237_GET_TRIGGER(ph); *triggerp = VIA8231_GET_TRIGGER_CNFG(reg, clink)? IST_EDGE : IST_LEVEL; return (0); } } return (1); } int via8231_set_trigger(pciintr_icu_handle_t v, int irq, int trigger) { struct via8231_handle *ph = v; int reg, clink, pciirq; if (VIA8231_PIRQ_LEGAL(irq) == 0 || VIA8231_TRIG_LEGAL(trigger) == 0) return (1); #ifdef VIA8231_DEBUG printf("via8231_set_trig: irq(%02x) --> trig(%02x)\n", irq, trigger); via8231_pir_dump("via8231_set_trig: ", ph); #endif for (clink = 0; clink <= VIA8231_LINK_MAX; clink++) { via8231_get_intr(v, clink, &pciirq); if (pciirq == irq) { reg = VIA8231_LINK_LEGAL(clink)? VIA8231_GET_TRIGGER(ph): VIA8237_GET_TRIGGER(ph); switch (trigger) { case IST_LEVEL: reg = VIA8231_SET_TRIGGER_CNFG(reg, clink, VIA8231_TRIGGER_CNFG_LEVEL); break; case IST_EDGE: reg = VIA8231_SET_TRIGGER_CNFG(reg, clink, VIA8231_TRIGGER_CNFG_EDGE); break; default: return (1); } if (VIA8231_LINK_LEGAL(clink)) VIA8231_SET_TRIGGER(ph, reg); else VIA8237_SET_TRIGGER(ph, reg); return (0); } } return (1); } #ifdef VIA8231_DEBUG static void via8231_pir_dump(const char *m, struct via8231_handle *ph) { int a, b; a = VIA8231_GET_TRIGGER(ph); b = VIA8231_GET_ROUTING(ph); printf("%s STATE: trigger(%02x), routing(%08x)\n", m, a, b); } #endif