/* $NetBSD: lca.c,v 1.36 2000/06/29 08:58:47 mrg 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. * 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) 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 "opt_dec_axppci_33.h" #include "opt_dec_alphabook1.h" #include "opt_dec_eb66.h" #include /* RCS ID & Copyright macro defns */ __KERNEL_RCSID(0, "$NetBSD: lca.c,v 1.36 2000/06/29 08:58:47 mrg Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef DEC_AXPPCI_33 #include #endif #ifdef DEC_ALPHABOOK1 #include #endif #ifdef DEC_EB66 #include #endif int lcamatch __P((struct device *, struct cfdata *, void *)); void lcaattach __P((struct device *, struct device *, void *)); struct cfattach lca_ca = { sizeof(struct lca_softc), lcamatch, lcaattach, }; extern struct cfdriver lca_cd; static int lcaprint __P((void *, const char *pnp)); int lca_bus_get_window __P((int, int, struct alpha_bus_space_translation *)); /* There can be only one. */ int lcafound; struct lca_config lca_configuration; int lcamatch(parent, match, aux) struct device *parent; struct cfdata *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(lcp, mallocsafe) 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); /* * We have 1 I/O window and 3 MEM windows. */ alpha_bus_window_count[ALPHA_BUS_TYPE_PCI_IO] = 1; alpha_bus_window_count[ALPHA_BUS_TYPE_PCI_MEM] = 3; alpha_bus_get_window = lca_bus_get_window; } lcp->lc_mallocsafe = mallocsafe; lca_pci_init(&lcp->lc_pc, lcp); alpha_pci_chipset = &lcp->lc_pc; /* * 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; lcp->lc_initted = 1; } void lcaattach(parent, self, aux) struct device *parent, *self; void *aux; { struct lca_softc *sc = (struct lca_softc *)self; 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 = sc->sc_lcp = &lca_configuration; lca_init(lcp, 1); /* XXX print chipset information */ printf("\n"); lca_dma_init(lcp); 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..."); } 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_bus = 0; pba.pba_flags = PCI_FLAGS_IO_ENABLED | PCI_FLAGS_MEM_ENABLED | PCI_FLAGS_MRL_OKAY | PCI_FLAGS_MRM_OKAY | PCI_FLAGS_MWI_OKAY; config_found(self, &pba, lcaprint); } static int lcaprint(aux, pnp) 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); } int lca_bus_get_window(type, window, abst) int type, window; struct alpha_bus_space_translation *abst; { struct lca_config *lcp = &lca_configuration; bus_space_tag_t st; switch (type) { case ALPHA_BUS_TYPE_PCI_IO: st = &lcp->lc_iot; break; case ALPHA_BUS_TYPE_PCI_MEM: st = &lcp->lc_memt; break; default: panic("lca_bus_get_window"); } return (alpha_bus_space_get_window(st, window, abst)); }