/* $OpenBSD: via8231.c,v 1.1 2003/07/30 05:26:33 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. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the NetBSD * Foundation, Inc. and its contributors. * 4. Neither the name of The NetBSD Foundation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * 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) 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. VIA8231 PCI to ISA Bridge * Based upon documentation: VIA VT8231 South Bridge, Revision 1.85 (March 11, 2002), pg 73 * Derived from amd756.c */ #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 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_trigger_cnfg[VIA8231_LINK_MAX+1] = { { (1<<3), 3 }, /*PINTA#*/ { (1<<2), 2 }, /*PINTB#*/ { (1<<1), 1 }, /*PINTC#*/ { (1<<0), 0 } /*PINTD#*/ }; 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 & via8231_trigger_cnfg[pirq].mask) >> \ via8231_trigger_cnfg[pirq].shft) #define VIA8231_SET_TRIGGER_CNFG(reg, pirq, cfg) \ reg = (reg & ~via8231_trigger_cnfg[pirq].mask) | \ ((cfg << via8231_trigger_cnfg[pirq].shft) & \ via8231_trigger_cnfg[pirq].mask) #define VIA8231_GET_ROUTING_CNFG(reg, pirq) \ (((reg) & via8231_routing_cnfg[pirq].mask) >> \ via8231_routing_cnfg[pirq].shft) #define VIA8231_SET_ROUTING_CNFG(reg, pirq, cfg) \ reg = (reg & ~via8231_routing_cnfg[pirq].mask) | \ ((cfg << via8231_routing_cnfg[pirq].shft) & \ via8231_routing_cnfg[pirq].mask) int via8231_init(pc, iot, tag, ptagp, phandp) 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; 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; *ptagp = &via8231_pci_icu; *phandp = ph; #ifdef VIA8231_DEBUG via8231_pir_dump("via8231_init", ph); #endif return 0; } int via8231_getclink(v, link, clinkp) pciintr_icu_handle_t v; int link, *clinkp; { if (VIA8231_LINK_LEGAL(link - 1) == 0) return (1); *clinkp = link - 1; return (0); } int via8231_get_intr(v, clink, irqp) pciintr_icu_handle_t v; int clink, *irqp; { struct via8231_handle *ph = v; int reg, val; if (VIA8231_LINK_LEGAL(clink) == 0) return (1); reg = VIA8231_GET_ROUTING(ph); val = VIA8231_GET_ROUTING_CNFG(reg, clink); *irqp = (val == VIA8231_ROUTING_CNFG_DISABLED) ? I386_PCI_INTERRUPT_LINE_NO_CONNECTION : val; return (0); } int via8231_set_intr(v, clink, irq) pciintr_icu_handle_t v; int clink, irq; { struct via8231_handle *ph = v; int reg; if (VIA8231_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 reg = VIA8231_GET_ROUTING(ph); VIA8231_SET_ROUTING_CNFG(reg, clink, irq); VIA8231_SET_ROUTING(ph, reg); return (0); } int via8231_get_trigger(v, irq, triggerp) pciintr_icu_handle_t v; int irq, *triggerp; { struct via8231_handle *ph = v; int reg, clink, pciirq; if (VIA8231_PIRQ_LEGAL(irq) == 0) return (1); for (clink = 0; clink <= VIA8231_LINK_MAX; clink++) { via8231_get_intr(v, clink, &pciirq); if (pciirq == irq) { reg = VIA8231_GET_TRIGGER(ph); switch (VIA8231_GET_TRIGGER_CNFG(reg, clink)) { case VIA8231_TRIGGER_CNFG_LEVEL: *triggerp = IST_LEVEL; break; case VIA8231_TRIGGER_CNFG_EDGE: *triggerp = IST_EDGE; break; default: return (1); } return (0); } } return (1); } int via8231_set_trigger(v, irq, trigger) pciintr_icu_handle_t v; int irq, 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_GET_ROUTING(ph); switch (trigger) { case IST_LEVEL: VIA8231_SET_TRIGGER_CNFG(reg, clink, VIA8231_TRIGGER_CNFG_LEVEL); break; case IST_EDGE: VIA8231_SET_TRIGGER_CNFG(reg, clink, VIA8231_TRIGGER_CNFG_EDGE); break; default: return (1); } VIA8231_SET_ROUTING(ph, reg); return (0); } } return (1); } #ifdef VIA8231_DEBUG static void via8231_pir_dump(m, ph) 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