1 /* $OpenBSD: pci_axppci_33.c,v 1.19 2008/07/22 18:45:51 miod Exp $ */ 2 /* $NetBSD: pci_axppci_33.c,v 1.10 1996/11/13 21:13:29 cgd Exp $ */ 3 4 /* 5 * Copyright (c) 1995, 1996 Carnegie-Mellon University. 6 * All rights reserved. 7 * 8 * Authors: Jeffrey Hsu and 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/lcavar.h> 48 49 #include <alpha/pci/pci_axppci_33.h> 50 #include <alpha/pci/siovar.h> 51 #include <alpha/pci/sioreg.h> 52 53 #include "sio.h" 54 55 int dec_axppci_33_intr_map(struct pci_attach_args *, pci_intr_handle_t *); 56 const char *dec_axppci_33_intr_string(void *, pci_intr_handle_t); 57 int dec_axppci_33_intr_line(void *, pci_intr_handle_t); 58 void *dec_axppci_33_intr_establish(void *, pci_intr_handle_t, 59 int, int (*func)(void *), void *, char *); 60 void dec_axppci_33_intr_disestablish(void *, void *); 61 62 #define LCA_SIO_DEVICE 7 /* XXX */ 63 64 void 65 pci_axppci_33_pickintr(lcp) 66 struct lca_config *lcp; 67 { 68 bus_space_tag_t iot = &lcp->lc_iot; 69 pci_chipset_tag_t pc = &lcp->lc_pc; 70 pcireg_t sioclass; 71 int sioII; 72 73 /* XXX MAGIC NUMBER */ 74 sioclass = pci_conf_read(pc, pci_make_tag(pc, 0, LCA_SIO_DEVICE, 0), 75 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 = lcp; 82 pc->pc_intr_map = dec_axppci_33_intr_map; 83 pc->pc_intr_string = dec_axppci_33_intr_string; 84 pc->pc_intr_line = dec_axppci_33_intr_line; 85 pc->pc_intr_establish = dec_axppci_33_intr_establish; 86 pc->pc_intr_disestablish = dec_axppci_33_intr_disestablish; 87 88 /* Not supported on AXPpci33. */ 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 #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(pa, ihp) 101 struct pci_attach_args *pa; 102 pci_intr_handle_t *ihp; 103 { 104 pcitag_t bustag = pa->pa_intrtag; 105 int buspin = pa->pa_intrpin; 106 pci_chipset_tag_t pc = pa->pa_pc; 107 int device, pirq; 108 pcireg_t pirqreg; 109 u_int8_t pirqline; 110 111 if (buspin == 0) { 112 /* No IRQ used. */ 113 return 1; 114 } 115 if (buspin > 4) { 116 printf("pci_map_int: bad interrupt pin %d\n", buspin); 117 return 1; 118 } 119 120 pci_decompose_tag(pc, bustag, NULL, &device, NULL); 121 122 switch (device) { 123 case 6: /* NCR SCSI */ 124 pirq = 3; 125 break; 126 127 case 11: /* slot 1 */ 128 switch (buspin) { 129 case PCI_INTERRUPT_PIN_A: 130 case PCI_INTERRUPT_PIN_D: 131 pirq = 0; 132 break; 133 case PCI_INTERRUPT_PIN_B: 134 pirq = 2; 135 break; 136 case PCI_INTERRUPT_PIN_C: 137 pirq = 1; 138 break; 139 #ifdef DIAGNOSTIC 140 default: /* XXX gcc -Wuninitialized */ 141 panic("dec_axppci_33_intr_map bogus PCI pin %d", 142 buspin); 143 #endif 144 }; 145 break; 146 147 case 12: /* slot 2 */ 148 switch (buspin) { 149 case PCI_INTERRUPT_PIN_A: 150 case PCI_INTERRUPT_PIN_D: 151 pirq = 1; 152 break; 153 case PCI_INTERRUPT_PIN_B: 154 pirq = 0; 155 break; 156 case PCI_INTERRUPT_PIN_C: 157 pirq = 2; 158 break; 159 #ifdef DIAGNOSTIC 160 default: /* XXX gcc -Wuninitialized */ 161 panic("dec_axppci_33_intr_map bogus PCI pin %d", 162 buspin); 163 #endif 164 }; 165 break; 166 167 case 8: /* slot 3 */ 168 switch (buspin) { 169 case PCI_INTERRUPT_PIN_A: 170 case PCI_INTERRUPT_PIN_D: 171 pirq = 2; 172 break; 173 case PCI_INTERRUPT_PIN_B: 174 pirq = 1; 175 break; 176 case PCI_INTERRUPT_PIN_C: 177 pirq = 0; 178 break; 179 #ifdef DIAGNOSTIC 180 default: /* XXX gcc -Wuninitialized */ 181 panic("dec_axppci_33_intr_map bogus PCI pin %d", 182 buspin); 183 #endif 184 }; 185 break; 186 187 default: 188 printf("dec_axppci_33_intr_map: weird device number %d\n", 189 device); 190 return 1; 191 } 192 193 pirqreg = pci_conf_read(pc, pci_make_tag(pc, 0, LCA_SIO_DEVICE, 0), 194 SIO_PCIREG_PIRQ_RTCTRL); 195 #if 0 196 printf("pci_axppci_33_map_int: device %d pin %c: pirq %d, reg = %x\n", 197 device, '@' + buspin, pirq, pirqreg); 198 #endif 199 pirqline = (pirqreg >> (pirq * 8)) & 0xff; 200 if ((pirqline & 0x80) != 0) 201 return 1; /* not routed? */ 202 pirqline &= 0xf; 203 204 #if 0 205 printf("pci_axppci_33_map_int: device %d pin %c: mapped to line %d\n", 206 device, '@' + buspin, pirqline); 207 #endif 208 209 *ihp = pirqline; 210 return (0); 211 } 212 213 const char * 214 dec_axppci_33_intr_string(lcv, ih) 215 void *lcv; 216 pci_intr_handle_t ih; 217 { 218 return sio_intr_string(NULL /*XXX*/, ih); 219 } 220 221 int 222 dec_axppci_33_intr_line(lcv, ih) 223 void *lcv; 224 pci_intr_handle_t ih; 225 { 226 return sio_intr_line(NULL /*XXX*/, ih); 227 } 228 229 void * 230 dec_axppci_33_intr_establish(lcv, ih, level, func, arg, name) 231 void *lcv, *arg; 232 pci_intr_handle_t ih; 233 int level; 234 int (*func)(void *); 235 char *name; 236 { 237 return sio_intr_establish(NULL /*XXX*/, ih, IST_LEVEL, level, func, 238 arg, name); 239 } 240 241 void 242 dec_axppci_33_intr_disestablish(lcv, cookie) 243 void *lcv, *cookie; 244 { 245 sio_intr_disestablish(NULL /*XXX*/, cookie); 246 } 247