bandit.c revision 1.2
1 /* $NetBSD: bandit.c,v 1.2 1998/07/13 19:27:13 tsubai Exp $ */ 2 3 /* 4 * Copyright 1996 1995 by Open Software Foundation, Inc. 1997 1996 1995 1994 1993 1992 1991 5 * All Rights Reserved 6 * 7 * Permission to use, copy, modify, and distribute this software and 8 * its documentation for any purpose and without fee is hereby granted, 9 * provided that the above copyright notice appears in all copies and 10 * that both the copyright notice and this permission notice appear in 11 * supporting documentation. 12 * 13 * OSF DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE 14 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 15 * FOR A PARTICULAR PURPOSE. 16 * 17 * IN NO EVENT SHALL OSF BE LIABLE FOR ANY SPECIAL, INDIRECT, OR 18 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM 19 * LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT, 20 * NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION 21 * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 22 */ 23 /* 24 * Copyright 1996 1995 by Apple Computer, Inc. 1997 1996 1995 1994 1993 1992 1991 25 * All Rights Reserved 26 * 27 * Permission to use, copy, modify, and distribute this software and 28 * its documentation for any purpose and without fee is hereby granted, 29 * provided that the above copyright notice appears in all copies and 30 * that both the copyright notice and this permission notice appear in 31 * supporting documentation. 32 * 33 * APPLE COMPUTER DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE 34 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 35 * FOR A PARTICULAR PURPOSE. 36 * 37 * IN NO EVENT SHALL APPLE COMPUTER BE LIABLE FOR ANY SPECIAL, INDIRECT, OR 38 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM 39 * LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT, 40 * NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION 41 * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 42 */ 43 44 #include <sys/param.h> 45 #include <sys/device.h> 46 47 #include <dev/pci/pcireg.h> 48 #include <dev/pci/pcivar.h> 49 #include <dev/ofw/openfirm.h> 50 51 #include <machine/bus.h> 52 53 #define PCI_BANDIT 11 54 55 #define PCI_REG_BANDIT_CFG 0x40 56 #define PCI_REG_ADDR_MASK 0x48 57 #define PCI_REG_MODE_SELECT 0x50 58 #define PCI_REG_ARBUS_HOLDOFF 0x58 59 60 #define PCI_MS_BYTESWAP 0x001 /* Enable Big Endian mode. (R/W)*/ 61 #define PCI_MS_PASSATOMIC 0x002 /* PCI Bus to ARBus Lock are always allowed (R)*/ 62 #define PCI_MS_NUMBER_MASK 0x00C /* PCI Bus Number (R) */ 63 #define PCI_MS_IS_SYNC 0x010 /* Is Synchronous (1) or Async (0) ? (R)*/ 64 #define PCI_MS_VGA_SPACE 0x020 /* Map VGA I/O space (R/W) */ 65 #define PCI_MS_IO_COHERENT 0x040 /* I/O Coherent (R/W) */ 66 #define PCI_MS_INT_ENABLE 0x080 /* Allow TEA or PCI Abort INT to pass to Grand Central (R/W) */ 67 68 static void bandit_init __P((pci_chipset_tag_t)); 69 static void scan_pci_devs __P((void)); 70 static void config_slot __P((int)); 71 72 void 73 pci_init() 74 { 75 scan_pci_devs(); 76 } 77 78 void 79 bandit_init(pc) 80 pci_chipset_tag_t pc; 81 { 82 u_int status; 83 pcitag_t tag; 84 85 tag = pci_make_tag(pc, 0, PCI_BANDIT, 0); 86 if ((pci_conf_read(pc, tag, PCI_ID_REG) & 0xffff) == 0xffff) 87 return; 88 89 status = pci_conf_read(pc, tag, PCI_REG_MODE_SELECT); 90 91 if ((status & PCI_MS_IO_COHERENT) == 0) { 92 status |= PCI_MS_IO_COHERENT; 93 pci_conf_write(pc, tag, PCI_REG_MODE_SELECT, status); 94 } 95 96 return; 97 } 98 99 100 void 101 scan_pci_devs() 102 { 103 int node; 104 char name[64]; 105 int n = 0; 106 u_int reg[2]; 107 108 bzero(pci_bridges, sizeof(pci_bridges)); 109 110 node = OF_peer(0); 111 node = OF_child(node); 112 113 while (node) { 114 if (OF_getprop(node, "name", name, sizeof(name)) <= 0) 115 continue; 116 if (strcmp(name, "bandit") == 0) { 117 int child; 118 119 if (OF_getprop(node, "reg", reg, sizeof(reg)) != 8) 120 continue; 121 122 pci_bridges[n].iot = (bus_space_tag_t)reg[0]; 123 pci_bridges[n].addr = mapiodev(reg[0] + 0x800000, 4); 124 pci_bridges[n].data = mapiodev(reg[0] + 0xc00000, 4); 125 pci_bridges[n].pc = n; 126 bandit_init(n++); 127 128 child = OF_child(node); 129 while (child) { 130 config_slot(child); 131 child = OF_peer(child); 132 } 133 } 134 if (strcmp(name, "pci") == 0) { /* XXX This is not a bandit :) */ 135 int child; 136 137 if (OF_getprop(node, "reg", reg, sizeof(reg)) != 8) 138 continue; 139 140 pci_bridges[n].iot = (bus_space_tag_t)reg[0]; 141 pci_bridges[n].addr = mapiodev(0xfec00000, 4); /* XXX */ 142 pci_bridges[n].data = mapiodev(0xfee00000, 4); /* XXX */ 143 pci_bridges[n].pc = PCI_CHIPSET_MPC106; /* for now */ 144 } 145 146 node = OF_peer(node); 147 } 148 } 149 150 void 151 config_slot(node) 152 int node; 153 { 154 pci_chipset_tag_t pc; 155 pcitag_t tag; 156 int dev, irq, intr, csr; 157 char slotname[8]; 158 159 if (OF_getprop(node, "AAPL,slot-name", slotname, sizeof(slotname)) < 2) 160 return; 161 162 slotname[2] = 0; 163 164 /* 165 * slot A1 pci0 dev 13 irq 23 166 * B1 pci0 dev 14 irq 24 167 * C1 pci0 dev 15 irq 25 168 * D2 pci1 dev 13 irq 27 169 * E2 pci1 dev 14 irq 28 170 * F2 pci1 dev 15 irq 29 171 * 172 * XXX Is this TRUE on all PowerMacs? 173 */ 174 pc = slotname[1] - '1'; 175 dev = slotname[0] - 'A' + 13 - pc * 3; 176 177 if (OF_getprop(node, "AAPL,interrupts", &irq, sizeof(irq)) == 178 sizeof(irq)) { 179 180 tag = pci_make_tag(pc, 0, dev, 0); 181 csr = pci_conf_read(pc, tag, PCI_COMMAND_STATUS_REG); 182 intr = pci_conf_read(pc, tag, PCI_INTERRUPT_REG); 183 184 #ifdef BANDIT_DEBUG 185 printf(" pc=%d, dev=%d\n", pc, dev); 186 printf(" OLD csr=0x%x, intr=0x%x\n", csr, intr); 187 #endif 188 189 intr = (intr & 0xffffff00) | (irq & 0xff); 190 pci_conf_write(pc, tag, PCI_INTERRUPT_REG, intr); 191 192 /* XXX */ 193 csr |= (PCI_COMMAND_MEM_ENABLE | PCI_COMMAND_IO_ENABLE); 194 pci_conf_write(pc, tag, PCI_COMMAND_STATUS_REG, csr); 195 196 #ifdef BANDIT_DEBUG 197 printf(" NEW csr=0x%x, intr=0x%x\n", csr, intr); 198 #endif 199 } 200 } 201
Indexes created Wed Oct 15 03:09:54 GMT 2025