1 /* $OpenBSD: pci_2100_a50.c,v 1.17 2001/12/14 00:44:59 nate Exp $ */ 2 /* $NetBSD: pci_2100_a50.c,v 1.12 1996/11/13 21:13:29 cgd Exp $ */ 3 4 /* 5 * Copyright (c) 1995, 1996 Carnegie-Mellon University. 6 * All rights reserved. 7 * 8 * Author: Chris G. Demetriou 9 * 10 * Permission to use, copy, modify and distribute this software and 11 * its documentation is hereby granted, provided that both the copyright 12 * notice and this permission notice appear in all copies of the 13 * software, derivative works or modified versions, and any portions 14 * thereof, and that both notices appear in supporting documentation. 15 * 16 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 17 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 18 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 19 * 20 * Carnegie Mellon requests users of this software to return to 21 * 22 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 23 * School of Computer Science 24 * Carnegie Mellon University 25 * Pittsburgh PA 15213-3890 26 * 27 * any improvements or extensions that they make and grant Carnegie the 28 * rights to redistribute these changes. 29 */ 30 31 #include <sys/types.h> 32 #include <sys/param.h> 33 #include <sys/time.h> 34 #include <sys/systm.h> 35 #include <sys/errno.h> 36 #include <sys/device.h> 37 #include <uvm/uvm_extern.h> 38 39 #include <machine/autoconf.h> 40 #include <machine/bus.h> 41 #include <machine/intr.h> 42 43 #include <dev/isa/isavar.h> 44 #include <dev/pci/pcireg.h> 45 #include <dev/pci/pcivar.h> 46 47 #include <alpha/pci/apecsvar.h> 48 49 #include <alpha/pci/pci_2100_a50.h> 50 #include <alpha/pci/siovar.h> 51 #include <alpha/pci/sioreg.h> 52 53 #include "sio.h" 54 55 int dec_2100_a50_intr_map __P((void *, pcitag_t, int, int, 56 pci_intr_handle_t *)); 57 const char *dec_2100_a50_intr_string __P((void *, pci_intr_handle_t)); 58 int dec_2100_a50_intr_line __P((void *, pci_intr_handle_t)); 59 void *dec_2100_a50_intr_establish __P((void *, pci_intr_handle_t, 60 int, int (*func)(void *), void *, char *)); 61 void dec_2100_a50_intr_disestablish __P((void *, void *)); 62 63 #define APECS_SIO_DEVICE 7 /* XXX */ 64 65 void 66 pci_2100_a50_pickintr(acp) 67 struct apecs_config *acp; 68 { 69 bus_space_tag_t iot = &acp->ac_iot; 70 pci_chipset_tag_t pc = &acp->ac_pc; 71 pcireg_t sioclass; 72 int sioII; 73 74 /* XXX MAGIC NUMBER */ 75 sioclass = pci_conf_read(pc, pci_make_tag(pc, 0, 7, 0), PCI_CLASS_REG); 76 sioII = (sioclass & 0xff) >= 3; 77 78 if (!sioII) 79 printf("WARNING: SIO NOT SIO II... NO BETS...\n"); 80 81 pc->pc_intr_v = acp; 82 pc->pc_intr_map = dec_2100_a50_intr_map; 83 pc->pc_intr_string = dec_2100_a50_intr_string; 84 pc->pc_intr_line = dec_2100_a50_intr_line; 85 pc->pc_intr_establish = dec_2100_a50_intr_establish; 86 pc->pc_intr_disestablish = dec_2100_a50_intr_disestablish; 87 88 /* Not supported on 2100 A50. */ 89 pc->pc_pciide_compat_intr_establish = NULL; 90 pc->pc_pciide_compat_intr_disestablish = NULL; 91 92 #if NSIO 93 sio_intr_setup(pc, iot); 94 set_iointr(&sio_iointr); 95 #else 96 panic("pci_2100_a50_pickintr: no I/O interrupt handler (no sio)"); 97 #endif 98 } 99 100 int 101 dec_2100_a50_intr_map(acv, bustag, buspin, line, ihp) 102 void *acv; 103 pcitag_t bustag; 104 int buspin, line; 105 pci_intr_handle_t *ihp; 106 { 107 struct apecs_config *acp = acv; 108 pci_chipset_tag_t pc = &acp->ac_pc; 109 int device, pirq; 110 pcireg_t pirqreg; 111 u_int8_t pirqline; 112 113 if (buspin == 0) { 114 /* No IRQ used. */ 115 return 1; 116 } 117 if (buspin > 4) { 118 printf("dec_2100_a50_intr_map: bad interrupt pin %d\n", 119 buspin); 120 return 1; 121 } 122 123 pci_decompose_tag(pc, bustag, NULL, &device, NULL); 124 125 switch (device) { 126 case 6: /* NCR SCSI */ 127 pirq = 3; 128 break; 129 130 case 11: /* slot 1 */ 131 case 14: /* slot 3 */ 132 switch (buspin) { 133 case PCI_INTERRUPT_PIN_A: 134 case PCI_INTERRUPT_PIN_D: 135 pirq = 0; 136 break; 137 case PCI_INTERRUPT_PIN_B: 138 pirq = 2; 139 break; 140 case PCI_INTERRUPT_PIN_C: 141 pirq = 1; 142 break; 143 #ifdef DIAGNOSTIC 144 default: /* XXX gcc -Wuninitialized */ 145 panic("dec_2100_a50_intr_map bogus PCI pin %d", 146 buspin); 147 #endif 148 }; 149 break; 150 151 case 12: /* slot 2 */ 152 switch (buspin) { 153 case PCI_INTERRUPT_PIN_A: 154 case PCI_INTERRUPT_PIN_D: 155 pirq = 1; 156 break; 157 case PCI_INTERRUPT_PIN_B: 158 pirq = 0; 159 break; 160 case PCI_INTERRUPT_PIN_C: 161 pirq = 2; 162 break; 163 #ifdef DIAGNOSTIC 164 default: /* XXX gcc -Wuninitialized */ 165 panic("dec_2100_a50_intr_map bogus PCI pin %d", 166 buspin); 167 #endif 168 }; 169 break; 170 171 case 13: /* slot 3 */ 172 switch (buspin) { 173 case PCI_INTERRUPT_PIN_A: 174 case PCI_INTERRUPT_PIN_D: 175 pirq = 2; 176 break; 177 case PCI_INTERRUPT_PIN_B: 178 pirq = 1; 179 break; 180 case PCI_INTERRUPT_PIN_C: 181 pirq = 0; 182 break; 183 #ifdef DIAGNOSTIC 184 default: /* XXX gcc -Wuninitialized */ 185 panic("dec_2100_a50_intr_map bogus PCI pin %d", 186 buspin); 187 #endif 188 }; 189 break; 190 191 default: 192 printf("dec_2100_a50_intr_map: weird device number %d\n", 193 device); 194 return 1; 195 } 196 197 pirqreg = pci_conf_read(pc, pci_make_tag(pc, 0, APECS_SIO_DEVICE, 0), 198 SIO_PCIREG_PIRQ_RTCTRL); 199 #if 0 200 printf("pci_2100_a50_map_int: device %d pin %c: pirq %d, reg = %x\n", 201 device, '@' + buspin, pirq, pirqreg); 202 #endif 203 pirqline = (pirqreg >> (pirq * 8)) & 0xff; 204 if ((pirqline & 0x80) != 0) 205 return 1; 206 pirqline &= 0xf; 207 208 #if 0 209 printf("pci_2100_a50_map_int: device %d pin %c: mapped to line %d\n", 210 device, '@' + buspin, pirqline); 211 #endif 212 213 *ihp = pirqline; 214 return (0); 215 } 216 217 const char * 218 dec_2100_a50_intr_string(acv, ih) 219 void *acv; 220 pci_intr_handle_t ih; 221 { 222 return sio_intr_string(NULL /*XXX*/, ih); 223 } 224 225 int 226 dec_2100_a50_intr_line(acv, ih) 227 void *acv; 228 pci_intr_handle_t ih; 229 { 230 return sio_intr_line(NULL /*XXX*/, ih); 231 } 232 233 void * 234 dec_2100_a50_intr_establish(acv, ih, level, func, arg, name) 235 void *acv, *arg; 236 pci_intr_handle_t ih; 237 int level; 238 int (*func) __P((void *)); 239 char *name; 240 { 241 return sio_intr_establish(NULL /*XXX*/, ih, IST_LEVEL, level, func, 242 arg, name); 243 } 244 245 void 246 dec_2100_a50_intr_disestablish(acv, cookie) 247 void *acv, *cookie; 248 { 249 sio_intr_disestablish(NULL /*XXX*/, cookie); 250 } 251