1 /* $NetBSD: u3.c,v 1.7 2013/04/30 10:16:25 macallan Exp $ */ 2 3 /* 4 * Copyright 2006 Kyma Systems LLC. 5 * All rights reserved. 6 * 7 * Written by Sanjay Lal <sanjayl@kymasys.com> 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed for the NetBSD Project by 20 * Kyma Systems LLC. 21 * 4. The name of Kyma Systems LLC may not be used to endorse 22 * or promote products derived from this software without specific prior 23 * written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY KYMA SYSTEMS LLC ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL KYMA SYSTEMS LLC 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38 #include <sys/cdefs.h> 39 40 #include <sys/param.h> 41 #include <sys/device.h> 42 #include <sys/systm.h> 43 44 #include <dev/pci/pcivar.h> 45 #include <dev/ofw/openfirm.h> 46 #include <dev/ofw/ofw_pci.h> 47 48 #include <machine/autoconf.h> 49 #include <machine/pio.h> 50 51 struct ibmcpc_softc 52 { 53 device_t sc_dev; 54 struct genppc_pci_chipset sc_pc[8]; 55 struct powerpc_bus_space sc_iot; 56 struct powerpc_bus_space sc_memt; 57 }; 58 59 static void ibmcpc_attach(device_t, device_t, void *); 60 static int ibmcpc_match(device_t, cfdata_t, void *); 61 62 static pcireg_t ibmcpc_conf_read(void *, pcitag_t, int); 63 static void ibmcpc_conf_write(void *, pcitag_t, int, pcireg_t); 64 65 CFATTACH_DECL_NEW(ibmcpc, sizeof(struct ibmcpc_softc), 66 ibmcpc_match, ibmcpc_attach, NULL, NULL); 67 68 #define PCI_DEVFN(slot,func) ((((slot) & 0x1f) << 3) | ((func) & 0x07)) 69 70 static int 71 ibmcpc_match(device_t parent, cfdata_t cf, void *aux) 72 { 73 struct confargs *ca = aux; 74 char compat[32]; 75 76 if (strcmp(ca->ca_name, "ht") != 0) 77 return 0; 78 79 memset(compat, 0, sizeof(compat)); 80 OF_getprop(ca->ca_node, "compatible", compat, sizeof(compat)); 81 82 if (strcmp(compat, "u3-ht") != 0) 83 return 0; 84 85 return 1; 86 } 87 88 static void 89 ibmcpc_attach(device_t parent, device_t self, void *aux) 90 { 91 struct ibmcpc_softc *sc = device_private(self); 92 pci_chipset_tag_t pc = sc->sc_pc; 93 struct confargs *ca = aux; 94 struct pcibus_attach_args pba; 95 int node = ca->ca_node, child; 96 uint32_t reg[6], busrange[2], i; 97 void *pc_data; 98 char name[32]; 99 100 aprint_normal("\n"); 101 sc->sc_dev = self; 102 103 /* u3 address */ 104 if (OF_getprop(node, "reg", reg, sizeof(reg)) < 24) { 105 return; 106 } 107 aprint_normal("Mapping in config space @ pa 0x%08x, size: 0x%08x\n", 108 reg[1], reg[2]); 109 pc_data = mapiodev(reg[1], reg[2], false); 110 111 for (child = OF_child(OF_finddevice("/ht")), i = 1; child; 112 child = OF_peer(child), i++) { 113 114 memset(name, 0, sizeof(name)); 115 116 if (OF_getprop(child, "name", name, sizeof(name)) == -1) 117 continue; 118 119 if (strcmp(name, "pci") != 0) 120 continue; 121 122 if (OF_getprop(child, "bus-range", busrange, 8) < 8) 123 continue; 124 125 memset(&sc->sc_iot, 0, sizeof(sc->sc_iot)); 126 sc->sc_iot.pbs_flags = _BUS_SPACE_LITTLE_ENDIAN | 127 _BUS_SPACE_IO_TYPE; 128 sc->sc_iot.pbs_base = 0x00000000; 129 if (ofwoea_map_space(RANGE_TYPE_PCI, RANGE_IO, child, 130 &sc->sc_iot, "ibmcpc io") != 0) 131 panic("Can't init ibmcpc io tag"); 132 133 memset(&sc->sc_memt, 0, sizeof(sc->sc_memt)); 134 sc->sc_memt.pbs_flags = _BUS_SPACE_LITTLE_ENDIAN | 135 _BUS_SPACE_MEM_TYPE; 136 sc->sc_memt.pbs_base = 0x00000000; 137 if (ofwoea_map_space(RANGE_TYPE_PCI, RANGE_MEM, child, 138 &sc->sc_memt, "ibmcpc mem") != 0) 139 panic("Can't init ibmcpc mem tag"); 140 141 macppc_pci_get_chipset_tag(pc); 142 pc->pc_node = child; 143 pc->pc_bus = busrange[0]; 144 pc->pc_addr = 0x0; 145 pc->pc_data = pc_data; 146 pc->pc_conf_read = ibmcpc_conf_read; 147 pc->pc_conf_write = ibmcpc_conf_write; 148 pc->pc_memt = &sc->sc_memt; 149 pc->pc_iot = &sc->sc_iot; 150 151 memset(&pba, 0, sizeof(pba)); 152 pba.pba_memt = pc->pc_memt; 153 pba.pba_iot = pc->pc_iot; 154 pba.pba_dmat = &pci_bus_dma_tag; 155 pba.pba_dmat64 = NULL; 156 pba.pba_bridgetag = NULL; 157 pba.pba_pc = pc; 158 pba.pba_bus = pc->pc_bus; 159 pba.pba_flags = PCI_FLAGS_MEM_OKAY | PCI_FLAGS_IO_OKAY; 160 config_found_ia(self, "pcibus", &pba, pcibusprint); 161 162 pc++; 163 } 164 } 165 166 static pcireg_t 167 ibmcpc_conf_read(void *cookie, pcitag_t tag, int reg) 168 { 169 pci_chipset_tag_t pc = cookie; 170 u_int32_t daddr = (u_int32_t) pc->pc_data; 171 pcireg_t data; 172 u_int32_t bus, dev, func, x, devfn; 173 174 pci_decompose_tag(pc, tag, &bus, &dev, &func); 175 176 devfn = PCI_DEVFN(dev, func); 177 178 if (bus == 0) { 179 180 if (devfn == 0x0) { 181 182 data = 0xffffffff; 183 goto done; 184 } 185 186 x = daddr + ((devfn << 8) | reg); 187 } else 188 x = daddr + ((devfn << 8) | reg) + (bus << 16) + 0x01000000UL; 189 190 data = in32rb(x); 191 192 done: 193 return data; 194 } 195 196 static void 197 ibmcpc_conf_write(void *cookie, pcitag_t tag, int reg, pcireg_t data) 198 { 199 pci_chipset_tag_t pc = cookie; 200 int32_t *daddr = pc->pc_data; 201 u_int32_t bus, dev, func; 202 u_int32_t x, devfn; 203 204 pci_decompose_tag(pc, tag, &bus, &dev, &func); 205 206 devfn = PCI_DEVFN(dev, func); 207 208 if (bus == 0) { 209 210 if (devfn == 0x0) { 211 goto done; 212 } 213 x = (u_int32_t) daddr + ((devfn << 8) | reg); 214 } else 215 x = (u_int32_t) daddr + ((devfn << 8) | reg) + (bus << 16) + 216 0x01000000UL; 217 218 out32rb(x, data); 219 220 done: 221 return; 222 } 223