/* $NetBSD: u3.c,v 1.12 2022/01/21 19:12:28 thorpej Exp $ */ /* * Copyright 2006 Kyma Systems LLC. * All rights reserved. * * Written by Sanjay Lal * * 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 for the NetBSD Project by * Kyma Systems LLC. * 4. The name of Kyma Systems LLC may not be used to endorse * or promote products derived from this software without specific prior * written permission. * * THIS SOFTWARE IS PROVIDED BY KYMA SYSTEMS LLC ``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 KYMA SYSTEMS LLC * 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. */ #include #include #include #include #include #include #include #include #include struct ibmcpc_softc { device_t sc_dev; struct genppc_pci_chipset sc_pc[8]; struct powerpc_bus_space sc_iot; struct powerpc_bus_space sc_memt; int sc_ranges[8]; }; /* kinda ugly but there can be only one */ static struct ibmcpc_softc *cpc0 = NULL; static void ibmcpc_attach(device_t, device_t, void *); static int ibmcpc_match(device_t, cfdata_t, void *); static pcireg_t ibmcpc_conf_read(void *, pcitag_t, int); static void ibmcpc_conf_write(void *, pcitag_t, int, pcireg_t); CFATTACH_DECL_NEW(ibmcpc, sizeof(struct ibmcpc_softc), ibmcpc_match, ibmcpc_attach, NULL, NULL); #define PCI_DEVFN(slot,func) ((((slot) & 0x1f) << 3) | ((func) & 0x07)) static int ibmcpc_match(device_t parent, cfdata_t cf, void *aux) { struct confargs *ca = aux; char compat[32]; if (strcmp(ca->ca_name, "ht") != 0) return 0; memset(compat, 0, sizeof(compat)); OF_getprop(ca->ca_node, "compatible", compat, sizeof(compat)); if (strcmp(compat, "u3-ht") != 0) return 0; return 1; } static void ibmcpc_attach(device_t parent, device_t self, void *aux) { struct ibmcpc_softc *sc = device_private(self); pci_chipset_tag_t pc = sc->sc_pc; struct confargs *ca = aux; struct pcibus_attach_args pba; int node = ca->ca_node, child; uint32_t reg[6], busrange[2], i; void *pc_data; char name[32]; aprint_normal("\n"); sc->sc_dev = self; /* u3 address */ if (OF_getprop(node, "reg", reg, sizeof(reg)) < 24) { return; } aprint_normal("Mapping in config space @ pa 0x%08x, size: 0x%08x\n", reg[1], reg[2]); pc_data = mapiodev(reg[1], reg[2], false); cpc0 = sc; for (child = OF_child(OF_finddevice("/ht")), i = 1; child; child = OF_peer(child), i++) { memset(name, 0, sizeof(name)); if (OF_getprop(child, "name", name, sizeof(name)) == -1) continue; if (strcmp(name, "pci") != 0) continue; if (OF_getprop(child, "bus-range", busrange, 8) < 8) continue; memset(&sc->sc_iot, 0, sizeof(sc->sc_iot)); sc->sc_iot.pbs_flags = _BUS_SPACE_LITTLE_ENDIAN | _BUS_SPACE_IO_TYPE; sc->sc_iot.pbs_base = 0x00000000; if (ofwoea_map_space(RANGE_TYPE_PCI, RANGE_IO, child, &sc->sc_iot, "ibmcpc io") != 0) panic("Can't init ibmcpc io tag"); memset(&sc->sc_memt, 0, sizeof(sc->sc_memt)); sc->sc_memt.pbs_flags = _BUS_SPACE_LITTLE_ENDIAN | _BUS_SPACE_MEM_TYPE; sc->sc_memt.pbs_base = 0x00000000; if (ofwoea_map_space(RANGE_TYPE_PCI, RANGE_MEM, child, &sc->sc_memt, "ibmcpc mem") != 0) panic("Can't init ibmcpc mem tag"); macppc_pci_get_chipset_tag(pc); pc->pc_node = child; pc->pc_bus = busrange[0]; sc->sc_ranges[pc->pc_bus] = busrange[1]; pc->pc_addr = 0x0; pc->pc_data = pc_data; pc->pc_conf_read = ibmcpc_conf_read; pc->pc_conf_write = ibmcpc_conf_write; pc->pc_memt = &sc->sc_memt; pc->pc_iot = &sc->sc_iot; memset(&pba, 0, sizeof(pba)); pba.pba_memt = pc->pc_memt; pba.pba_iot = pc->pc_iot; pba.pba_dmat = &pci_bus_dma_tag; pba.pba_dmat64 = NULL; pba.pba_bridgetag = NULL; pba.pba_pc = pc; pba.pba_bus = pc->pc_bus; pba.pba_flags = PCI_FLAGS_MEM_OKAY | PCI_FLAGS_IO_OKAY; config_found(self, &pba, pcibusprint, CFARGS(.devhandle = device_handle(self))); pc++; } } static pcireg_t ibmcpc_conf_read(void *cookie, pcitag_t tag, int reg) { pci_chipset_tag_t pc = cookie; struct ibmcpc_softc *sc = cpc0; u_int32_t daddr = (u_int32_t) pc->pc_data; pcireg_t data; u_int32_t bus, dev, func, x, devfn; if ((unsigned int)reg >= PCI_CONF_SIZE) return (pcireg_t) -1; pci_decompose_tag(pc, tag, &bus, &dev, &func); if ((bus < pc->pc_bus) || (bus > sc->sc_ranges[pc->pc_bus])) { data = 0xffffffff; goto done; } devfn = PCI_DEVFN(dev, func); if (bus == 0) { if (devfn == 0x0) { data = 0xffffffff; goto done; } x = daddr + ((devfn << 8) | reg); } else x = daddr + ((devfn << 8) | reg) + (bus << 16) + 0x01000000UL; data = in32rb(x); done: return data; } static void ibmcpc_conf_write(void *cookie, pcitag_t tag, int reg, pcireg_t data) { pci_chipset_tag_t pc = cookie; struct ibmcpc_softc *sc = cpc0; int32_t *daddr = pc->pc_data; u_int32_t bus, dev, func; u_int32_t x, devfn; if ((unsigned int)reg >= PCI_CONF_SIZE) return; pci_decompose_tag(pc, tag, &bus, &dev, &func); if ((bus < pc->pc_bus) || (bus > sc->sc_ranges[pc->pc_bus])) return; devfn = PCI_DEVFN(dev, func); if (bus == 0) { if (devfn == 0x0) { goto done; } x = (u_int32_t) daddr + ((devfn << 8) | reg); } else x = (u_int32_t) daddr + ((devfn << 8) | reg) + (bus << 16) + 0x01000000UL; out32rb(x, data); done: return; }