/* $OpenBSD: mcpcia.c,v 1.7 2022/03/13 08:04:13 mpi Exp $ */ /* $NetBSD: mcpcia.c,v 1.20 2007/03/04 05:59:11 christos 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) 1998 by Matthew Jacob * NASA AMES Research Center. * 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 immediately at the beginning of the file, without modification, * 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. The name of the author 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. */ /* * MCPCIA mcbus to PCI bus adapter * found on AlphaServer 4100 systems. */ #include #include #include #include #include #include #include #include #include #include #include #include #define KV(_addr) ((caddr_t)ALPHA_PHYS_TO_K0SEG((_addr))) #define MCPCIA_SYSBASE(mc) \ ((((unsigned long) (mc)->cc_gid) << MCBUS_GID_SHIFT) | \ (((unsigned long) (mc)->cc_mid) << MCBUS_MID_SHIFT) | \ (MCBUS_IOSPACE)) #define MCPCIA_PROBE(mid, gid) \ badaddr((void *)KV(((((unsigned long) gid) << MCBUS_GID_SHIFT) | \ (((unsigned long) mid) << MCBUS_MID_SHIFT) | \ (MCBUS_IOSPACE) | MCPCIA_PCI_BRIDGE | _MCPCIA_PCI_REV)), \ sizeof(u_int32_t)) int mcpciamatch (struct device *, void *, void *); void mcpciaattach (struct device *, struct device *, void *); void mcpcia_config_cleanup (void); int mcpciaprint (void *, const char *); const struct cfattach mcpcia_ca = { sizeof(struct mcpcia_softc), mcpciamatch, mcpciaattach }; struct cfdriver mcpcia_cd = { NULL, "mcpcia", DV_DULL, }; /* * We have one statically-allocated mcpcia_config structure; this is * the one used for the console (which, coincidentally, is the only * MCPCIA with an EISA adapter attached to it). */ struct mcpcia_config mcpcia_console_configuration; int mcpciaprint(aux, pnp) void *aux; const char *pnp; { register struct pcibus_attach_args *pba = aux; /* only PCIs can attach to MCPCIA for now */ if (pnp) printf("%s at %s", pba->pba_busname, pnp); printf(" bus %d", pba->pba_bus); return (UNCONF); } int mcpciamatch(parent, cf, aux) struct device *parent; void *cf; void *aux; { struct mcbus_dev_attach_args *ma = aux; if (ma->ma_type == MCBUS_TYPE_PCI) return (1); return (0); } void mcpciaattach(parent, self, aux) struct device *parent; struct device *self; void *aux; { static int first = 1; struct mcbus_dev_attach_args *ma = aux; struct mcpcia_softc *mcp = (struct mcpcia_softc *)self; struct mcpcia_config *ccp; struct pcibus_attach_args pba; u_int32_t ctl; /* * Make sure this MCPCIA exists... */ if (MCPCIA_PROBE(ma->ma_mid, ma->ma_gid)) { mcp->mcpcia_cc = NULL; printf(" (not present)\n"); return; } printf("\n"); /* * Determine if we're the console's MCPCIA. */ if (ma->ma_mid == mcpcia_console_configuration.cc_mid && ma->ma_gid == mcpcia_console_configuration.cc_gid) ccp = &mcpcia_console_configuration; else { ccp = malloc(sizeof(*ccp), M_DEVBUF, M_WAITOK | M_ZERO); ccp->cc_mid = ma->ma_mid; ccp->cc_gid = ma->ma_gid; } mcp->mcpcia_cc = ccp; ccp->cc_sc = mcp; /* This initializes cc_sysbase so we can do register access. */ mcpcia_init0(ccp, 1); ctl = REGVAL(MCPCIA_PCI_REV(ccp)); printf("%s: Horse rev %d, %s handed Saddle rev %d, CAP rev %d\n", mcp->mcpcia_dev.dv_xname, HORSE_REV(ctl), (SADDLE_TYPE(ctl) & 1) ? "right" : "left", SADDLE_REV(ctl), CAP_REV(ctl)); mcpcia_dma_init(ccp); /* * Set up interrupts */ pci_kn300_pickintr(ccp, first); first = 0; /* * Attach PCI bus */ bzero(&pba, sizeof(pba)); pba.pba_busname = "pci"; pba.pba_iot = &ccp->cc_iot; pba.pba_memt = &ccp->cc_memt; pba.pba_dmat = alphabus_dma_get_tag(&ccp->cc_dmat_direct, ALPHA_BUS_PCI); pba.pba_pc = &ccp->cc_pc; pba.pba_domain = pci_ndomains++; pba.pba_bus = 0; config_found(self, &pba, mcpciaprint); /* * Clear any errors that may have occurred during the probe * sequence. */ REGVAL(MCPCIA_CAP_ERR(ccp)) = 0xFFFFFFFF; alpha_mb(); } void mcpcia_init() { struct mcpcia_config *ccp = &mcpcia_console_configuration; int i; /* * Look for all of the MCPCIAs on the system. One of them * will have an EISA attached to it. This MCPCIA is the * only one that can be used for the console. Once we find * that one, initialize it. */ for (i = 0; i < MCPCIA_PER_MCBUS; i++) { ccp->cc_mid = mcbus_mcpcia_probe_order[i]; /* * XXX If we ever support more than one MCBUS, we'll * XXX have to probe for them, and map them to unit * XXX numbers. */ ccp->cc_gid = MCBUS_GID_FROM_INSTANCE(0); ccp->cc_sysbase = MCPCIA_SYSBASE(ccp); if (badaddr((void *)ALPHA_PHYS_TO_K0SEG(MCPCIA_PCI_REV(ccp)), sizeof(u_int32_t))) continue; if (EISA_PRESENT(REGVAL(MCPCIA_PCI_REV(ccp)))) { mcpcia_init0(ccp, 0); return; } } panic("mcpcia_init: unable to find EISA bus"); } void mcpcia_init0(ccp, mallocsafe) struct mcpcia_config *ccp; int mallocsafe; { u_int32_t ctl; snprintf(ccp->pc_io_ex_name, sizeof ccp->pc_io_ex_name, "mcpcia%d_bus_io", ccp->cc_mid); snprintf(ccp->pc_mem_dex_name, sizeof ccp->pc_mem_dex_name, "mcpciad%d_bus_mem", ccp->cc_mid); snprintf(ccp->pc_mem_dex_name, sizeof ccp->pc_mem_sex_name, "mcpcias%d_bus_mem", ccp->cc_mid); if (!ccp->cc_initted) { /* don't do these twice since they set up extents */ mcpcia_bus_io_init(&ccp->cc_iot, ccp); mcpcia_bus_mem_init(&ccp->cc_memt, ccp); } ccp->cc_mallocsafe = mallocsafe; mcpcia_pci_init(&ccp->cc_pc, ccp); /* * Establish a precalculated base for convenience's sake. */ ccp->cc_sysbase = MCPCIA_SYSBASE(ccp); /* * Disable interrupts and clear errors prior to probing */ REGVAL(MCPCIA_INT_MASK0(ccp)) = 0; REGVAL(MCPCIA_INT_MASK1(ccp)) = 0; REGVAL(MCPCIA_CAP_ERR(ccp)) = 0xFFFFFFFF; alpha_mb(); if (ccp == &mcpcia_console_configuration) { /* * Use this opportunity to also find out the MID and CPU * type of the currently running CPU (that's us, billybob....) */ ctl = REGVAL(MCPCIA_WHOAMI(ccp)); mcbus_primary.mcbus_cpu_mid = MCBUS_CPU_MID(ctl); if ((MCBUS_CPU_INFO(ctl) & CPU_Fill_Err) == 0 && mcbus_primary.mcbus_valid == 0) { mcbus_primary.mcbus_bcache = MCBUS_CPU_INFO(ctl) & CPU_BCacheMask; mcbus_primary.mcbus_valid = 1; } alpha_mb(); } alpha_pci_chipset = &ccp->cc_pc; alpha_pci_chipset->pc_name = "mcpcia"; alpha_pci_chipset->pc_hae_mask = 0; alpha_pci_chipset->pc_dense = MCPCIA_PCI_DENSE; ccp->cc_initted = 1; } void mcpcia_config_cleanup() { volatile u_int32_t ctl; struct mcpcia_softc *mcp; struct mcpcia_config *ccp; int i; extern struct cfdriver mcpcia_cd; /* * Turn on Hard, Soft error interrupts. Maybe i2c too. */ for (i = 0; i < mcpcia_cd.cd_ndevs; i++) { if ((mcp = mcpcia_cd.cd_devs[i]) == NULL) continue; ccp = mcp->mcpcia_cc; if (ccp == NULL) continue; ctl = REGVAL(MCPCIA_INT_MASK0(ccp)); ctl |= MCPCIA_GEN_IENABL; REGVAL(MCPCIA_INT_MASK0(ccp)) = ctl; alpha_mb(); /* force stall while write completes */ ctl = REGVAL(MCPCIA_INT_MASK0(ccp)); } }