/* $NetBSD: bandit.c,v 1.35 2022/01/21 19:12:28 thorpej Exp $ */ /*- * Copyright (c) 2000 Tsubai Masanari. 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, 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 ``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 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 __KERNEL_RCSID(0, "$NetBSD: bandit.c,v 1.35 2022/01/21 19:12:28 thorpej Exp $"); #include #include #include #include #include #include #include #include #include struct bandit_softc { device_t sc_dev; struct genppc_pci_chipset sc_pc; struct powerpc_bus_space sc_iot; struct powerpc_bus_space sc_memt; boolean_t sc_is_chaos; }; static void bandit_attach(device_t, device_t, void *); static int bandit_match(device_t, cfdata_t, void *); static pcireg_t bandit_conf_read(void *, pcitag_t, int); static void bandit_conf_write(void *, pcitag_t, int, pcireg_t); static void chaos_conf_write(void *, pcitag_t, int, pcireg_t); static void bandit_init(struct bandit_softc *); CFATTACH_DECL_NEW(bandit, sizeof(struct bandit_softc), bandit_match, bandit_attach, NULL, NULL); static int bandit_match(device_t parent, cfdata_t cf, void *aux) { struct confargs *ca = aux; if (strcmp(ca->ca_name, "bandit") == 0 || strcmp(ca->ca_name, "chaos") == 0) return 1; return 0; } static void bandit_attach(device_t parent, device_t self, void *aux) { struct bandit_softc *sc = device_private(self); pci_chipset_tag_t pc = &sc->sc_pc; struct confargs *ca = aux; struct pcibus_attach_args pba; int len, node = ca->ca_node; uint32_t reg[2], busrange[2]; struct range { uint32_t pci_hi, pci_mid, pci_lo; uint32_t host; uint32_t size_hi, size_lo; } ranges[6], *rp = ranges; aprint_normal("\n"); sc->sc_dev = self; sc->sc_is_chaos = (strcmp(ca->ca_name, "chaos") == 0); /* Bandit address */ if (OF_getprop(node, "reg", reg, sizeof(reg)) < 8) return; /* PCI bus number */ if (OF_getprop(node, "bus-range", busrange, sizeof(busrange)) != 8) return; /* find i/o tag */ len = OF_getprop(node, "ranges", ranges, sizeof(ranges)); if (len == -1) return; while (len >= sizeof(ranges[0])) { if ((rp->pci_hi & OFW_PCI_PHYS_HI_SPACEMASK) == OFW_PCI_PHYS_HI_SPACE_IO) { sc->sc_iot.pbs_base = rp->host; sc->sc_iot.pbs_limit = rp->host + rp->size_lo; break; } len -= sizeof(ranges[0]); rp++; } memset(&sc->sc_iot, 0, sizeof(struct powerpc_bus_space)); memset(&sc->sc_memt, 0, sizeof(struct powerpc_bus_space)); sc->sc_iot.pbs_flags = _BUS_SPACE_LITTLE_ENDIAN|_BUS_SPACE_IO_TYPE; if (ofwoea_map_space(RANGE_TYPE_PCI, RANGE_IO, node, &sc->sc_iot, "bandit io-space") != 0) panic("Can't init bandit io tag"); sc->sc_memt.pbs_flags = _BUS_SPACE_LITTLE_ENDIAN|_BUS_SPACE_MEM_TYPE; if (ofwoea_map_space(RANGE_TYPE_PCI, RANGE_MEM, node, &sc->sc_memt, "bandit mem-space") != 0) panic("Can't init bandit mem tag"); macppc_pci_get_chipset_tag(pc); pc->pc_node = node; pc->pc_iot = &sc->sc_iot; pc->pc_memt = &sc->sc_memt; pc->pc_addr = mapiodev(reg[0] + 0x800000, 4, false); pc->pc_data = mapiodev(reg[0] + 0xc00000, 8, false); pc->pc_bus = busrange[0]; pc->pc_conf_read = bandit_conf_read; if (sc->sc_is_chaos) { pc->pc_conf_write = chaos_conf_write; } else pc->pc_conf_write = bandit_conf_write; bandit_init(sc); 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_bus = pc->pc_bus; pba.pba_bridgetag = NULL; pba.pba_pc = pc; pba.pba_flags = PCI_FLAGS_IO_OKAY | PCI_FLAGS_MEM_OKAY; config_found(self, &pba, pcibusprint, CFARGS(.devhandle = device_handle(self))); } static pcireg_t bandit_conf_read(void *cookie, pcitag_t tag, int reg) { pci_chipset_tag_t pc = cookie; pcireg_t data; int bus, dev, func, s; uint32_t x; if ((unsigned int)reg >= PCI_CONF_SIZE) return (pcireg_t) -1; pci_decompose_tag(pc, tag, &bus, &dev, &func); /* * bandit's minimum device number of the first bus is 11. * So we behave as if there is no device when dev < 11. */ if (func > 7) panic("pci_conf_read: func > 7"); if (bus == pc->pc_bus) { if (dev < 11) return 0xffffffff; x = (1 << dev) | (func << 8) | reg; } else x = tag | reg | 1; s = splhigh(); out32rb(pc->pc_addr, x); DELAY(10); data = 0xffffffff; if (!badaddr(pc->pc_data, 4)) data = in32rb(pc->pc_data); DELAY(10); out32rb(pc->pc_addr, 0); DELAY(10); splx(s); return data; } static void bandit_conf_write(void *cookie, pcitag_t tag, int reg, pcireg_t data) { pci_chipset_tag_t pc = cookie; int bus, dev, func, s; u_int32_t x; if ((unsigned int)reg >= PCI_CONF_SIZE) return; pci_decompose_tag(pc, tag, &bus, &dev, &func); if (func > 7) panic("pci_conf_write: func > 7"); if (bus == pc->pc_bus) { if (dev < 11) panic("pci_conf_write: dev < 11"); x = (1 << dev) | (func << 8) | reg; } else x = tag | reg | 1; s = splhigh(); out32rb(pc->pc_addr, x); DELAY(10); out32rb(pc->pc_data, data); DELAY(10); out32rb(pc->pc_addr, 0); DELAY(10); splx(s); } /* * XXX * /chaos really hates writes to config space, so we just don't do them */ static void chaos_conf_write(void *cookie, pcitag_t tag, int reg, pcireg_t data) { } #define PCI_BANDIT 11 #define PCI_REG_MODE_SELECT 0x50 #define PCI_MODE_IO_COHERENT 0x040 /* I/O coherent */ static void bandit_init(struct bandit_softc *sc) { pci_chipset_tag_t pc = &sc->sc_pc; pcitag_t tag; u_int mode; tag = pci_make_tag(pc, pc->pc_bus, PCI_BANDIT, 0); if ((pci_conf_read(pc, tag, PCI_ID_REG) & 0xffff) == 0xffff) return; mode = pci_conf_read(pc, tag, PCI_REG_MODE_SELECT); if ((mode & PCI_MODE_IO_COHERENT) == 0) { mode |= PCI_MODE_IO_COHERENT; pci_conf_write(pc, tag, PCI_REG_MODE_SELECT, mode); } }