pci_axppci_33.c revision 1.14
1 /* $NetBSD: pci_axppci_33.c,v 1.14 1997/07/19 09:49:53 cgd Exp $ */ 2 3 /* 4 * Copyright (c) 1995, 1996 Carnegie-Mellon University. 5 * All rights reserved. 6 * 7 * Authors: Jeffrey Hsu and Chris G. Demetriou 8 * 9 * Permission to use, copy, modify and distribute this software and 10 * its documentation is hereby granted, provided that both the copyright 11 * notice and this permission notice appear in all copies of the 12 * software, derivative works or modified versions, and any portions 13 * thereof, and that both notices appear in supporting documentation. 14 * 15 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 16 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 17 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 18 * 19 * Carnegie Mellon requests users of this software to return to 20 * 21 * Software Distribution Coordinator or Software.Distribution (at) CS.CMU.EDU 22 * School of Computer Science 23 * Carnegie Mellon University 24 * Pittsburgh PA 15213-3890 25 * 26 * any improvements or extensions that they make and grant Carnegie the 27 * rights to redistribute these changes. 28 */ 29 30 #include <machine/options.h> /* Config options headers */ 31 #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */ 32 33 __KERNEL_RCSID(0, "$NetBSD: pci_axppci_33.c,v 1.14 1997/07/19 09:49:53 cgd Exp $"); 34 35 #include <sys/types.h> 36 #include <sys/param.h> 37 #include <sys/time.h> 38 #include <sys/systm.h> 39 #include <sys/errno.h> 40 #include <sys/device.h> 41 #include <vm/vm.h> 42 43 #include <machine/autoconf.h> 44 #include <machine/bus.h> 45 #include <machine/intr.h> 46 47 #include <dev/isa/isavar.h> 48 #include <dev/pci/pcireg.h> 49 #include <dev/pci/pcivar.h> 50 51 #include <alpha/pci/lcavar.h> 52 53 #include <alpha/pci/pci_axppci_33.h> 54 #include <alpha/pci/siovar.h> 55 #include <alpha/pci/sioreg.h> 56 57 #include "sio.h" 58 59 int dec_axppci_33_intr_map __P((void *, pcitag_t, int, int, 60 pci_intr_handle_t *)); 61 const char *dec_axppci_33_intr_string __P((void *, pci_intr_handle_t)); 62 void *dec_axppci_33_intr_establish __P((void *, pci_intr_handle_t, 63 int, int (*func)(void *), void *)); 64 void dec_axppci_33_intr_disestablish __P((void *, void *)); 65 66 #define LCA_SIO_DEVICE 7 /* XXX */ 67 68 void 69 pci_axppci_33_pickintr(lcp) 70 struct lca_config *lcp; 71 { 72 bus_space_tag_t iot = lcp->lc_iot; 73 pci_chipset_tag_t pc = &lcp->lc_pc; 74 pcireg_t sioclass; 75 int sioII; 76 77 /* XXX MAGIC NUMBER */ 78 sioclass = pci_conf_read(pc, pci_make_tag(pc, 0, LCA_SIO_DEVICE, 0), 79 PCI_CLASS_REG); 80 sioII = (sioclass & 0xff) >= 3; 81 82 if (!sioII) 83 printf("WARNING: SIO NOT SIO II... NO BETS...\n"); 84 85 pc->pc_intr_v = lcp; 86 pc->pc_intr_map = dec_axppci_33_intr_map; 87 pc->pc_intr_string = dec_axppci_33_intr_string; 88 pc->pc_intr_establish = dec_axppci_33_intr_establish; 89 pc->pc_intr_disestablish = dec_axppci_33_intr_disestablish; 90 91 #if NSIO 92 sio_intr_setup(iot); 93 set_iointr(&sio_iointr); 94 #else 95 panic("pci_axppci_33_pickintr: no I/O interrupt handler (no sio)"); 96 #endif 97 } 98 99 int 100 dec_axppci_33_intr_map(lcv, bustag, buspin, line, ihp) 101 void *lcv; 102 pcitag_t bustag; 103 int buspin, line; 104 pci_intr_handle_t *ihp; 105 { 106 struct lca_config *lcp = lcv; 107 pci_chipset_tag_t pc = &lcp->lc_pc; 108 int device, pirq; 109 pcireg_t pirqreg; 110 u_int8_t pirqline; 111 112 #ifndef DIAGNOSTIC 113 pirq = 0; /* XXX gcc -Wuninitialized */ 114 #endif 115 116 if (buspin == 0) { 117 /* No IRQ used. */ 118 return 1; 119 } 120 if (buspin > 4) { 121 printf("pci_map_int: bad interrupt pin %d\n", buspin); 122 return 1; 123 } 124 125 alpha_pci_decompose_tag(pc, bustag, NULL, &device, NULL); 126 127 switch (device) { 128 case 6: /* NCR SCSI */ 129 pirq = 3; 130 break; 131 132 case 11: /* slot 1 */ 133 switch (buspin) { 134 case PCI_INTERRUPT_PIN_A: 135 case PCI_INTERRUPT_PIN_D: 136 pirq = 0; 137 break; 138 case PCI_INTERRUPT_PIN_B: 139 pirq = 2; 140 break; 141 case PCI_INTERRUPT_PIN_C: 142 pirq = 1; 143 break; 144 #ifdef DIAGNOSTIC 145 default: /* XXX gcc -Wuninitialized */ 146 panic("dec_axppci_33_intr_map bogus PCI pin %d\n", 147 buspin); 148 #endif 149 }; 150 break; 151 152 case 12: /* slot 2 */ 153 switch (buspin) { 154 case PCI_INTERRUPT_PIN_A: 155 case PCI_INTERRUPT_PIN_D: 156 pirq = 1; 157 break; 158 case PCI_INTERRUPT_PIN_B: 159 pirq = 0; 160 break; 161 case PCI_INTERRUPT_PIN_C: 162 pirq = 2; 163 break; 164 #ifdef DIAGNOSTIC 165 default: /* XXX gcc -Wuninitialized */ 166 panic("dec_axppci_33_intr_map bogus PCI pin %d\n", 167 buspin); 168 #endif 169 }; 170 break; 171 172 case 8: /* slot 3 */ 173 switch (buspin) { 174 case PCI_INTERRUPT_PIN_A: 175 case PCI_INTERRUPT_PIN_D: 176 pirq = 2; 177 break; 178 case PCI_INTERRUPT_PIN_B: 179 pirq = 1; 180 break; 181 case PCI_INTERRUPT_PIN_C: 182 pirq = 0; 183 break; 184 #ifdef DIAGNOSTIC 185 default: /* XXX gcc -Wuninitialized */ 186 panic("dec_axppci_33_intr_map bogus PCI pin %d\n", 187 buspin); 188 #endif 189 }; 190 break; 191 192 default: 193 printf("dec_axppci_33_intr_map: weird device number %d\n", 194 device); 195 return 1; 196 } 197 198 pirqreg = pci_conf_read(pc, pci_make_tag(pc, 0, LCA_SIO_DEVICE, 0), 199 SIO_PCIREG_PIRQ_RTCTRL); 200 #if 0 201 printf("pci_axppci_33_map_int: device %d pin %c: pirq %d, reg = %x\n", 202 device, '@' + buspin, pirq, pirqreg); 203 #endif 204 pirqline = (pirqreg >> (pirq * 8)) & 0xff; 205 if ((pirqline & 0x80) != 0) 206 return 1; /* not routed? */ 207 pirqline &= 0xf; 208 209 #if 0 210 printf("pci_axppci_33_map_int: device %d pin %c: mapped to line %d\n", 211 device, '@' + buspin, pirqline); 212 #endif 213 214 *ihp = pirqline; 215 return (0); 216 } 217 218 const char * 219 dec_axppci_33_intr_string(lcv, ih) 220 void *lcv; 221 pci_intr_handle_t ih; 222 { 223 #if 0 224 struct lca_config *lcp = lcv; 225 #endif 226 227 return sio_intr_string(NULL /*XXX*/, ih); 228 } 229 230 void * 231 dec_axppci_33_intr_establish(lcv, ih, level, func, arg) 232 void *lcv, *arg; 233 pci_intr_handle_t ih; 234 int level; 235 int (*func) __P((void *)); 236 { 237 #if 0 238 struct lca_config *lcp = lcv; 239 #endif 240 241 return sio_intr_establish(NULL /*XXX*/, ih, IST_LEVEL, level, func, 242 arg); 243 } 244 245 void 246 dec_axppci_33_intr_disestablish(lcv, cookie) 247 void *lcv, *cookie; 248 { 249 #if 0 250 struct lca_config *lcp = lcv; 251 #endif 252 253 sio_intr_disestablish(NULL /*XXX*/, cookie); 254 } 255
Indexes created Thu Oct 30 03:10:01 GMT 2025