1 /* $NetBSD: pcib.c,v 1.4 2008/04/04 16:04:19 matt Exp $ */ 2 3 /*- 4 * Copyright (c) 1996, 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE 30 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include <sys/cdefs.h> 40 __KERNEL_RCSID(0, "$NetBSD: pcib.c,v 1.4 2008/04/04 16:04:19 matt Exp $"); 41 42 #include <sys/types.h> 43 #include <sys/param.h> 44 #include <sys/systm.h> 45 #include <sys/device.h> 46 47 #include <machine/bus.h> 48 49 #include <dev/isa/isavar.h> 50 51 #include <dev/pci/pcivar.h> 52 #include <dev/pci/pcireg.h> 53 54 #include <dev/pci/pcidevs.h> 55 56 #include "isa.h" 57 #include "isadma.h" 58 59 int pcibmatch(device_t, cfdata_t, void *); 60 void pcibattach(device_t, device_t, void *); 61 62 struct pcib_softc { 63 device_t sc_dev; 64 struct powerpc_isa_chipset *sc_chipset; 65 }; 66 67 extern struct powerpc_isa_chipset genppc_ict; 68 extern struct genppc_pci_chipset *genppc_pct; 69 70 CFATTACH_DECL_NEW(pcib, sizeof(struct pcib_softc), 71 pcibmatch, pcibattach, NULL, NULL); 72 73 void pcib_callback(device_t); 74 75 int 76 pcibmatch(device_t parent, cfdata_t cf, void *aux) 77 { 78 struct pci_attach_args *pa = aux; 79 80 /* 81 * Match PCI-ISA bridge. 82 */ 83 if (PCI_CLASS(pa->pa_class) == PCI_CLASS_BRIDGE && 84 PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_BRIDGE_ISA) { 85 return (1); 86 } 87 88 /* 89 * some special cases: 90 */ 91 switch (PCI_VENDOR(pa->pa_id)) { 92 case PCI_VENDOR_INTEL: 93 switch (PCI_PRODUCT(pa->pa_id)) { 94 case PCI_PRODUCT_INTEL_SIO: 95 /* 96 * The Intel SIO identifies itself as a 97 * miscellaneous prehistoric. 98 */ 99 return (1); 100 } 101 break; 102 } 103 104 return (0); 105 } 106 107 void 108 pcibattach(device_t parent, device_t self, void *aux) 109 { 110 struct pci_attach_args *pa = aux; 111 struct pcib_softc *sc = device_private(self); 112 char devinfo[256]; 113 u_int32_t v; 114 int lvlmask = 0; 115 #ifdef prep 116 prop_bool_t rav; 117 #endif 118 119 sc->sc_dev = self; 120 121 /* 122 * Just print out a description and defer configuration 123 * until all PCI devices have been attached. 124 */ 125 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof(devinfo)); 126 aprint_normal(": %s (rev. 0x%02x)\n", devinfo, 127 PCI_REVISION(pa->pa_class)); 128 129 v = pci_conf_read(pa->pa_pc, pa->pa_tag, 0x40); 130 if ((v & 0x20) == 0) { 131 aprint_verbose("%s: PIRQ[0-3] not used\n", self->dv_xname); 132 } else { 133 v = pci_conf_read(pa->pa_pc, pa->pa_tag, 0x60); 134 if ((v & 0x80808080) == 0x80808080) { 135 aprint_verbose("%s: PIRQ[0-3] disabled\n", 136 self->dv_xname); 137 } else { 138 int i; 139 aprint_verbose("%s:", device_xname(self)); 140 for (i = 0; i < 4; i++, v >>= 8) { 141 if ((v & 0x80) == 0 && (v & 0x0f) != 0) { 142 aprint_verbose(" PIRQ[%d]=%d", i, 143 v & 0x0f); 144 lvlmask |= (1 << (v & 0x0f)); 145 } 146 } 147 aprint_verbose("\n"); 148 } 149 } 150 151 /* 152 * If we have an 83C553F-G sitting on a RAVEN host bridge, 153 * then we need to rewire some interrupts. 154 * The IDE Interrupt Routing Control Register lives at 0x43, 155 * and defaults to 0xEF, which means the primary controller 156 * interrupts on ivr-14, and the secondary on ivr-15. We 157 * reset it to 0xEE to fire them both at ivr-14. 158 * We have to rewrite the interrupt map, because the bridge map told 159 * us that the interrupt is MPIC 0, which is the bridge intr for 160 * the 8259. 161 * Additionally, sometimes the PCI Interrupt Routing Control Register 162 * is improperly initialized, causing all sorts of wierd interrupt 163 * issues on the machine. The manual says it should default to 164 * 0000h (index 45-44h) however it would appear that PPCBUG is 165 * setting it up differently. Reset it to 0000h. 166 */ 167 168 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_SYMPHONY && 169 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_SYMPHONY_83C553) { 170 v = pci_conf_read(pa->pa_pc, pa->pa_tag, 0x44) & 0xffff0000; 171 pci_conf_write(pa->pa_pc, pa->pa_tag, 0x44, v); 172 } 173 174 #ifdef prep 175 rav = prop_dictionary_get(device_properties(parent), 176 "prep-raven-pchb"); 177 178 if (rav != NULL && prop_bool_true(rav) && 179 PCI_VENDOR(pa->pa_id) == PCI_VENDOR_SYMPHONY && 180 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_SYMPHONY_83C553) { 181 182 prop_dictionary_t dict, devsub; 183 prop_number_t pinsub; 184 struct genppc_pci_chipset_businfo *pbi; 185 186 v = pci_conf_read(pa->pa_pc, pa->pa_tag, 0x40) & 0x00ffffff; 187 v |= 0xee000000; 188 pci_conf_write(pa->pa_pc, pa->pa_tag, 0x40, v); 189 190 pbi = SIMPLEQ_FIRST(&genppc_pct->pc_pbi); 191 dict = prop_dictionary_get(pbi->pbi_properties, 192 "prep-pci-intrmap"); 193 devsub = prop_dictionary_get(dict, "devfunc-11"); 194 pinsub = prop_number_create_integer(14); 195 prop_dictionary_set(devsub, "pin-A", pinsub); 196 prop_object_release(pinsub); 197 aprint_verbose_dev(self, "setting pciide irq to 14\n"); 198 /* irq 14 is level */ 199 lvlmask = 0x0040; 200 } 201 #endif /* prep */ 202 203 config_defer(self, pcib_callback); 204 } 205 206 void 207 pcib_callback(device_t self) 208 { 209 struct pcib_softc *sc = device_private(self); 210 #if NISA > 0 211 struct isabus_attach_args iba; 212 213 /* 214 * Attach the ISA bus behind this bridge. 215 */ 216 memset(&iba, 0, sizeof(iba)); 217 sc->sc_chipset = &genppc_ict; 218 iba.iba_ic = sc->sc_chipset; 219 iba.iba_iot = &genppc_isa_io_space_tag; 220 iba.iba_memt = &genppc_isa_mem_space_tag; 221 #if NISADMA > 0 222 iba.iba_dmat = &isa_bus_dma_tag; 223 #endif 224 config_found_ia(sc->sc_dev, "isabus", &iba, isabusprint); 225 #endif 226 } 227