bandit.c revision 1.25.38.2
1 /* $NetBSD: bandit.c,v 1.25.38.2 2007/05/06 05:11:41 macallan Exp $ */ 2 3 /*- 4 * Copyright (c) 2000 Tsubai Masanari. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __KERNEL_RCSID(0, "$NetBSD: bandit.c,v 1.25.38.2 2007/05/06 05:11:41 macallan Exp $"); 31 32 #include <sys/param.h> 33 #include <sys/device.h> 34 #include <sys/systm.h> 35 36 #include <dev/pci/pcivar.h> 37 #include <dev/ofw/openfirm.h> 38 #include <dev/ofw/ofw_pci.h> 39 40 #include <machine/autoconf.h> 41 #include <machine/pci_machdep.h> 42 43 struct bandit_softc { 44 struct device sc_dev; 45 struct genppc_pci_chipset sc_pc; 46 }; 47 48 static void bandit_attach(struct device *, struct device *, void *); 49 static int bandit_match(struct device *, struct cfdata *, void *); 50 51 static pcireg_t bandit_conf_read(void *, pcitag_t, int); 52 static void bandit_conf_write(void *, pcitag_t, int, pcireg_t); 53 54 static void bandit_init(struct bandit_softc *); 55 56 CFATTACH_DECL(bandit, sizeof(struct bandit_softc), 57 bandit_match, bandit_attach, NULL, NULL); 58 59 static int 60 bandit_match(struct device *parent, struct cfdata *cf, void *aux) 61 { 62 struct confargs *ca = aux; 63 64 if (strcmp(ca->ca_name, "bandit") == 0 || 65 strcmp(ca->ca_name, "chaos") == 0) 66 return 1; 67 68 return 0; 69 } 70 71 static void 72 bandit_attach(struct device *parent, struct device *self, void *aux) 73 { 74 struct bandit_softc *sc = (void *)self; 75 pci_chipset_tag_t pc = &sc->sc_pc; 76 struct confargs *ca = aux; 77 struct pcibus_attach_args pba; 78 int len, node = ca->ca_node; 79 u_int32_t reg[2], busrange[2]; 80 struct ranges { 81 u_int32_t pci_hi, pci_mid, pci_lo; 82 u_int32_t host; 83 u_int32_t size_hi, size_lo; 84 } ranges[6], *rp = ranges; 85 86 printf("\n"); 87 88 /* Bandit address */ 89 if (OF_getprop(node, "reg", reg, sizeof(reg)) < 8) 90 return; 91 92 /* PCI bus number */ 93 if (OF_getprop(node, "bus-range", busrange, sizeof(busrange)) != 8) 94 return; 95 96 macppc_pci_get_chipset_tag(pc); 97 pc->pc_node = node; 98 pc->pc_addr = mapiodev(reg[0] + 0x800000, 4); 99 pc->pc_data = mapiodev(reg[0] + 0xc00000, 8); 100 pc->pc_bus = busrange[0]; 101 pc->pc_conf_read = bandit_conf_read; 102 pc->pc_conf_write = bandit_conf_write; 103 pc->pc_memt = (bus_space_tag_t)0; 104 105 /* find i/o tag */ 106 len = OF_getprop(node, "ranges", ranges, sizeof(ranges)); 107 if (len == -1) 108 return; 109 while (len >= sizeof(ranges[0])) { 110 if ((rp->pci_hi & OFW_PCI_PHYS_HI_SPACEMASK) == 111 OFW_PCI_PHYS_HI_SPACE_IO) 112 pc->pc_iot = (bus_space_tag_t)rp->host; 113 len -= sizeof(ranges[0]); 114 rp++; 115 } 116 117 bandit_init(sc); 118 119 memset(&pba, 0, sizeof(pba)); 120 pba.pba_memt = pc->pc_memt; 121 pba.pba_iot = pc->pc_iot; 122 pba.pba_dmat = &pci_bus_dma_tag; 123 pba.pba_dmat64 = NULL; 124 pba.pba_bus = pc->pc_bus; 125 pba.pba_bridgetag = NULL; 126 pba.pba_pc = pc; 127 pba.pba_flags = PCI_FLAGS_IO_ENABLED | PCI_FLAGS_MEM_ENABLED; 128 129 config_found_ia(self, "pcibus", &pba, pcibusprint); 130 } 131 132 static pcireg_t 133 bandit_conf_read(void *cookie, pcitag_t tag, int reg) 134 { 135 pci_chipset_tag_t pc = cookie; 136 pcireg_t data; 137 int bus, dev, func, s; 138 u_int32_t x; 139 140 pci_decompose_tag(pc, tag, &bus, &dev, &func); 141 142 /* 143 * bandit's minimum device number of the first bus is 11. 144 * So we behave as if there is no device when dev < 11. 145 */ 146 if (func > 7) 147 panic("pci_conf_read: func > 7"); 148 149 if (bus == pc->pc_bus) { 150 if (dev < 11) 151 return 0xffffffff; 152 x = (1 << dev) | (func << 8) | reg; 153 } else 154 x = tag | reg | 1; 155 156 s = splhigh(); 157 158 out32rb(pc->pc_addr, x); 159 DELAY(10); 160 data = 0xffffffff; 161 if (!badaddr(pc->pc_data, 4)) 162 data = in32rb(pc->pc_data); 163 DELAY(10); 164 out32rb(pc->pc_addr, 0); 165 DELAY(10); 166 167 splx(s); 168 169 return data; 170 } 171 172 static void 173 bandit_conf_write(void *cookie, pcitag_t tag, int reg, pcireg_t data) 174 { 175 pci_chipset_tag_t pc = cookie; 176 int bus, dev, func, s; 177 u_int32_t x; 178 179 pci_decompose_tag(pc, tag, &bus, &dev, &func); 180 181 if (func > 7) 182 panic("pci_conf_write: func > 7"); 183 184 if (bus == pc->pc_bus) { 185 if (dev < 11) 186 panic("pci_conf_write: dev < 11"); 187 x = (1 << dev) | (func << 8) | reg; 188 } else 189 x = tag | reg | 1; 190 191 s = splhigh(); 192 193 out32rb(pc->pc_addr, x); 194 DELAY(10); 195 out32rb(pc->pc_data, data); 196 DELAY(10); 197 out32rb(pc->pc_addr, 0); 198 DELAY(10); 199 200 splx(s); 201 } 202 203 #define PCI_BANDIT 11 204 205 #define PCI_REG_MODE_SELECT 0x50 206 207 #define PCI_MODE_IO_COHERENT 0x040 /* I/O coherent */ 208 209 static void 210 bandit_init(struct bandit_softc *sc) 211 { 212 pci_chipset_tag_t pc = &sc->sc_pc; 213 pcitag_t tag; 214 u_int mode; 215 216 tag = pci_make_tag(pc, pc->pc_bus, PCI_BANDIT, 0); 217 if ((pci_conf_read(pc, tag, PCI_ID_REG) & 0xffff) == 0xffff) 218 return; 219 220 mode = pci_conf_read(pc, tag, PCI_REG_MODE_SELECT); 221 222 if ((mode & PCI_MODE_IO_COHERENT) == 0) { 223 mode |= PCI_MODE_IO_COHERENT; 224 pci_conf_write(pc, tag, PCI_REG_MODE_SELECT, mode); 225 } 226 } 227
Indexes created Tue Oct 14 15:09:51 GMT 2025