/* $NetBSD: sio.c,v 1.57 2021/08/07 16:18:41 thorpej Exp $ */ /*- * Copyright (c) 2000 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Jason R. Thorpe. * * 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) 1995, 1996 Carnegie-Mellon University. * All rights reserved. * * Author: Chris G. Demetriou * * Permission to use, copy, modify and distribute this software and * its documentation is hereby granted, provided that both the copyright * notice and this permission notice appear in all copies of the * software, derivative works or modified versions, and any portions * thereof, and that both notices appear in supporting documentation. * * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. * * Carnegie Mellon requests users of this software to return to * * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU * School of Computer Science * Carnegie Mellon University * Pittsburgh PA 15213-3890 * * any improvements or extensions that they make and grant Carnegie the * rights to redistribute these changes. */ #include "opt_dec_2100_a500.h" #include "opt_dec_2100a_a500.h" #include "eisa.h" #include "sio.h" #include /* RCS ID & Copyright macro defns */ __KERNEL_RCSID(0, "$NetBSD: sio.c,v 1.57 2021/08/07 16:18:41 thorpej Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #if defined(DEC_2100_A500) || defined(DEC_2100A_A500) #include #include #endif struct sio_softc { device_t sc_dev; pci_chipset_tag_t sc_pc; bus_space_tag_t sc_iot, sc_memt; bus_dma_tag_t sc_parent_dmat; #if NPCEB > 0 int sc_haseisa; #endif int sc_is82c693; /* ISA chipset must persist; it's used after autoconfig. */ isa_chipset_tag_t sc_ic; }; static int siomatch(device_t, cfdata_t, void *); static void sioattach(device_t, device_t, void *); CFATTACH_DECL_NEW(sio, sizeof(struct sio_softc), siomatch, sioattach, NULL, NULL); #if NPCEB > 0 static int pcebmatch(device_t, cfdata_t, void *); CFATTACH_DECL_NEW(pceb, sizeof(struct sio_softc), pcebmatch, sioattach, NULL, NULL); #endif union sio_attach_args { struct isabus_attach_args sa_iba; struct eisabus_attach_args sa_eba; }; static void sio_isa_attach_hook(device_t, device_t, struct isabus_attach_args *); static void sio_isa_detach_hook(isa_chipset_tag_t, device_t); #if NPCEB > 0 static void sio_eisa_attach_hook(device_t, device_t, struct eisabus_attach_args *); static int sio_eisa_maxslots(void *); static int sio_eisa_intr_map(void *, u_int, eisa_intr_handle_t *); #endif static void sio_bridge_callback(device_t); static int siomatch(device_t parent, cfdata_t match, void *aux) { struct pci_attach_args *pa = aux; /* * The Cypress 82C693 is more-or-less an SIO, but with * indirect register access. (XXX for everything, or * just the ELCR?) */ if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_CONTAQ && PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_CONTAQ_82C693 && pa->pa_function == 0) return (1); if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_INTEL && PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_SIO) return (1); if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_ALI && PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_ALI_M1533) return (1); return (0); } #if NPCEB > 0 static int pcebmatch(device_t parent, cfdata_t match, void *aux) { struct pci_attach_args *pa = aux; if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_INTEL && PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PCEB) return (1); return (0); } #endif static void sioattach(device_t parent, device_t self, void *aux) { struct sio_softc *sc = device_private(self); struct pci_attach_args *pa = aux; char devinfo[256]; pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof(devinfo)); aprint_normal(": %s (rev. 0x%02x)\n", devinfo, PCI_REVISION(pa->pa_class)); sc->sc_dev = self; sc->sc_pc = pa->pa_pc; sc->sc_iot = pa->pa_iot; sc->sc_memt = pa->pa_memt; sc->sc_parent_dmat = pa->pa_dmat; #if NPCEB > 0 sc->sc_haseisa = (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_INTEL && PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PCEB); #endif sc->sc_is82c693 = (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_CONTAQ && PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_CONTAQ_82C693); config_defer(self, sio_bridge_callback); } static void sio_bridge_callback(device_t self) { struct sio_softc *sc = device_private(self); union sio_attach_args sa; #if NPCEB > 0 struct alpha_eisa_chipset ec; if (sc->sc_haseisa) { ec.ec_v = NULL; ec.ec_attach_hook = sio_eisa_attach_hook; ec.ec_maxslots = sio_eisa_maxslots; /* * Deal with platforms that hook EISA interrupts * up differently. */ switch (cputype) { #if defined(DEC_2100_A500) || defined(DEC_2100A_A500) case ST_DEC_2100_A500: case ST_DEC_2100A_A500: pci_2100_a500_eisa_pickintr(sc->sc_pc, &ec); break; #endif default: ec.ec_intr_map = sio_eisa_intr_map; ec.ec_intr_string = sio_intr_string; ec.ec_intr_evcnt = sio_intr_evcnt; ec.ec_intr_establish = sio_isa_intr_establish; ec.ec_intr_disestablish = sio_intr_disestablish; } sa.sa_eba.eba_iot = sc->sc_iot; sa.sa_eba.eba_memt = sc->sc_memt; sa.sa_eba.eba_dmat = alphabus_dma_get_tag(sc->sc_parent_dmat, ALPHA_BUS_EISA); sa.sa_eba.eba_ec = &ec; config_found(sc->sc_dev, &sa.sa_eba, eisabusprint, CFARGS(.iattr = "eisabus")); } #endif /* NPCEB */ /* * Deal with platforms which have Odd ISA DMA needs. */ switch (cputype) { #if defined(DEC_2100_A500) || defined(DEC_2100A_A500) case ST_DEC_2100_A500: case ST_DEC_2100A_A500: sc->sc_ic = sableio_pickisa(); break; #endif default: sc->sc_ic = kmem_zalloc(sizeof(*sc->sc_ic), KM_SLEEP); } sc->sc_ic->ic_v = NULL; sc->sc_ic->ic_attach_hook = sio_isa_attach_hook; sc->sc_ic->ic_detach_hook = sio_isa_detach_hook; /* * Deal with platforms that hook up ISA interrupts differently. */ switch (cputype) { #if defined(DEC_2100_A500) || defined(DEC_2100A_A500) case ST_DEC_2100_A500: case ST_DEC_2100A_A500: pci_2100_a500_isa_pickintr(sc->sc_pc, sc->sc_ic); break; #endif default: sc->sc_ic->ic_intr_evcnt = sio_intr_evcnt; sc->sc_ic->ic_intr_establish = sio_isa_intr_establish; sc->sc_ic->ic_intr_disestablish = sio_intr_disestablish; sc->sc_ic->ic_intr_alloc = sio_intr_alloc; } sa.sa_iba.iba_iot = sc->sc_iot; sa.sa_iba.iba_memt = sc->sc_memt; sa.sa_iba.iba_dmat = alphabus_dma_get_tag(sc->sc_parent_dmat, ALPHA_BUS_ISA); sa.sa_iba.iba_ic = sc->sc_ic; config_found(sc->sc_dev, &sa.sa_iba, isabusprint, CFARGS(.iattr = "isabus")); } static void sio_isa_attach_hook(device_t parent, device_t self, struct isabus_attach_args *iba) { /* Nothing to do. */ } static void sio_isa_detach_hook(isa_chipset_tag_t ic, device_t self) { /* Nothing to do. */ } #if NPCEB > 0 static void sio_eisa_attach_hook(device_t parent, device_t self, struct eisabus_attach_args *eba) { #if NEISA > 0 eisa_init(eba->eba_ec); #endif } static int sio_eisa_maxslots(void *v) { return 16; /* as good a number as any. only 8, maybe? */ } static int sio_eisa_intr_map(void *v, u_int irq, eisa_intr_handle_t *ihp) { #define ICU_LEN 16 /* number of ISA IRQs (XXX) */ if (irq >= ICU_LEN) { printf("sio_eisa_intr_map: bad IRQ %d\n", irq); *ihp = -1; return 1; } if (irq == 2) { printf("sio_eisa_intr_map: changed IRQ 2 to IRQ 9\n"); irq = 9; } *ihp = irq; return 0; } #endif /* NPCEB */