/* $OpenBSD: lca.c,v 1.25 2025/06/28 16:04:09 miod Exp $ */ /* $NetBSD: lca.c,v 1.14 1996/12/05 01:39:35 cgd 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. * * Authors: Jeffrey Hsu and 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 <sys/param.h> #include <sys/systm.h> #include <sys/kernel.h> #include <sys/malloc.h> #include <sys/device.h> #include <uvm/uvm_extern.h> #include <machine/autoconf.h> #include <machine/cpuconf.h> #include <machine/rpb.h> #include <dev/isa/isareg.h> #include <dev/isa/isavar.h> #include <dev/pci/pcireg.h> #include <dev/pci/pcivar.h> #include <alpha/pci/lcareg.h> #include <alpha/pci/lcavar.h> #ifdef DEC_AXPPCI_33 #include <alpha/pci/pci_axppci_33.h> #endif #ifdef DEC_ALPHABOOK1 #include <alpha/pci/pci_alphabook1.h> #endif #ifdef DEC_EB66 #include <alpha/pci/pci_eb66.h> #endif int lcamatch(struct device *, void *, void *); void lcaattach(struct device *, struct device *, void *); const struct cfattach lca_ca = { sizeof(struct device), lcamatch, lcaattach, }; struct cfdriver lca_cd = { NULL, "lca", DV_DULL, }; int lcaprint(void *, const char *pnp); void lca_machine_check(unsigned long, struct trapframe *, unsigned long, unsigned long); /* There can be only one. */ int lcafound; struct lca_config lca_configuration; int lcamatch(struct device *parent, void *match, void *aux) { struct mainbus_attach_args *ma = aux; /* Make sure that we're looking for a LCA. */ if (strcmp(ma->ma_name, lca_cd.cd_name) != 0) return (0); if (lcafound) return (0); return (1); } /* * Set up the chipset's function pointers. */ void lca_init(struct lca_config *lcp, int mallocsafe) { /* * The LCA HAE register is WRITE-ONLY, so we can't tell where * the second sparse window is actually mapped. Therefore, * we have to guess where it is. This seems to be the normal * address. */ lcp->lc_s_mem_w2_masked_base = 0x80000000; if (!lcp->lc_initted) { /* don't do these twice since they set up extents */ lca_bus_io_init(&lcp->lc_iot, lcp); lca_bus_mem_init(&lcp->lc_memt, lcp); } lcp->lc_mallocsafe = mallocsafe; lca_pci_init(&lcp->lc_pc, lcp); alpha_pci_chipset = &lcp->lc_pc; alpha_pci_chipset->pc_name = "lca"; alpha_pci_chipset->pc_mem = LCA_PCI_SPARSE; alpha_pci_chipset->pc_ports = LCA_PCI_SIO; alpha_pci_chipset->pc_hae_mask = IOC_HAE_ADDREXT; alpha_pci_chipset->pc_dense = LCA_PCI_DENSE; alpha_pci_chipset->pc_bwx = 0; /* * Refer to ``DECchip 21066 and DECchip 21068 Alpha AXP Microprocessors * Hardware Reference Manual''. * ... */ /* * According to section 6.4.1, all bits of the IOC_HAE register are * undefined after reset. Bits <31:27> are write-only. However, we * cannot blindly set it to zero. The serial ROM code that initializes * the PCI devices' address spaces, allocates sparse memory blocks in * the range that must use the IOC_HAE register for address translation, * and sets this register accordingly (see section 6.4.14). * * IOC_HAE left AS IS. */ /* * According to section 6.4.2, all bits of the IOC_CONF register are * undefined after reset. Bits <1:0> are write-only. Set them to * 0x00 for PCI Type 0 configuration access. * * IOC_CONF set to ZERO. */ REGVAL64(LCA_IOC_CONF) = 0; /* * Disable parity on the bus. According to Linux, on some systems, * siop(4) behaves badly unless parity is disabled. */ REGVAL64(LCA_IOC_PAR_DIS) = IOC_PAR_DISABLE; lcp->lc_initted = 1; } void lcaattach(struct device *parent, struct device *self, void *aux) { struct lca_config *lcp; struct pcibus_attach_args pba; /* note that we've attached the chipset; can't have 2 LCAs. */ /* Um, not sure about this. XXX JH */ lcafound = 1; /* * set up the chipset's info; done once at console init time * (maybe), but we must do it twice to take care of things * that need to use memory allocation. */ lcp = &lca_configuration; lca_init(lcp, 1); /* XXX print chipset information */ printf("\n"); lca_dma_init(lcp); /* safe to override since LCA machines do not set mcheck_handler */ platform.mcheck_handler = lca_machine_check; switch (cputype) { #ifdef DEC_AXPPCI_33 case ST_DEC_AXPPCI_33: pci_axppci_33_pickintr(lcp); break; #endif #ifdef DEC_ALPHABOOK1 case ST_ALPHABOOK1: pci_alphabook1_pickintr(lcp); break; #endif #ifdef DEC_EB66 case ST_EB66: pci_eb66_pickintr(lcp); break; #endif default: panic("lcaattach: shouldn't be here, really..."); } bzero(&pba, sizeof(pba)); pba.pba_busname = "pci"; pba.pba_iot = &lcp->lc_iot; pba.pba_memt = &lcp->lc_memt; pba.pba_dmat = alphabus_dma_get_tag(&lcp->lc_dmat_direct, ALPHA_BUS_PCI); pba.pba_pc = &lcp->lc_pc; pba.pba_domain = pci_ndomains++; pba.pba_bus = 0; #ifdef notyet pba.pba_flags = PCI_FLAGS_IO_ENABLED | PCI_FLAGS_MEM_ENABLED | PCI_FLAGS_MRL_OKAY | PCI_FLAGS_MRM_OKAY | PCI_FLAGS_MWI_OKAY; #endif config_found(self, &pba, lcaprint); } int lcaprint(void *aux, const char *pnp) { register struct pcibus_attach_args *pba = aux; /* only PCIs can attach to LCAes; easy. */ if (pnp) printf("%s at %s", pba->pba_busname, pnp); printf(" bus %d", pba->pba_bus); return (UNCONF); } void lca_machine_check(unsigned long mces, struct trapframe *framep, unsigned long vector, unsigned long param) { int64_t stat0; machine_check(mces, framep, vector, param); /* clear error flags in IOC_STATUS0 register */ stat0 = REGVAL64(LCA_IOC_STAT0); REGVAL64(LCA_IOC_STAT0) = stat0; }
