pci_axppci_33.c revision 1.9
1 /* $NetBSD: pci_axppci_33.c,v 1.9 1996/10/23 04:12:27 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 <sys/types.h> 31 #include <sys/param.h> 32 #include <sys/time.h> 33 #include <sys/systm.h> 34 #include <sys/errno.h> 35 #include <sys/device.h> 36 #include <vm/vm.h> 37 38 #include <machine/autoconf.h> 39 #include <machine/bus.h> 40 #include <machine/intr.h> 41 42 #include <dev/isa/isavar.h> 43 #include <dev/pci/pcireg.h> 44 #include <dev/pci/pcivar.h> 45 46 #include <alpha/pci/lcavar.h> 47 48 #include <alpha/pci/pci_axppci_33.h> 49 #include <alpha/pci/siovar.h> 50 #include <alpha/pci/sioreg.h> 51 52 #include "sio.h" 53 54 int dec_axppci_33_intr_map __P((void *, pcitag_t, int, int, 55 pci_intr_handle_t *)); 56 const char *dec_axppci_33_intr_string __P((void *, pci_intr_handle_t)); 57 void *dec_axppci_33_intr_establish __P((void *, pci_intr_handle_t, 58 int, int (*func)(void *), void *)); 59 void dec_axppci_33_intr_disestablish __P((void *, void *)); 60 61 #define LCA_SIO_DEVICE 7 /* XXX */ 62 63 void 64 pci_axppci_33_pickintr(lcp) 65 struct lca_config *lcp; 66 { 67 bus_space_tag_t iot = lcp->lc_iot; 68 pci_chipset_tag_t pc = &lcp->lc_pc; 69 pcireg_t sioclass; 70 int sioII; 71 72 /* XXX MAGIC NUMBER */ 73 sioclass = pci_conf_read(pc, pci_make_tag(pc, 0, LCA_SIO_DEVICE, 0), 74 PCI_CLASS_REG); 75 sioII = (sioclass & 0xff) >= 3; 76 77 if (!sioII) 78 printf("WARNING: SIO NOT SIO II... NO BETS...\n"); 79 80 pc->pc_intr_v = lcp; 81 pc->pc_intr_map = dec_axppci_33_intr_map; 82 pc->pc_intr_string = dec_axppci_33_intr_string; 83 pc->pc_intr_establish = dec_axppci_33_intr_establish; 84 pc->pc_intr_disestablish = dec_axppci_33_intr_disestablish; 85 86 #if NSIO 87 sio_intr_setup(iot); 88 set_iointr(&sio_iointr); 89 #else 90 panic("pci_axppci_33_pickintr: no I/O interrupt handler (no sio)"); 91 #endif 92 } 93 94 int 95 dec_axppci_33_intr_map(lcv, bustag, buspin, line, ihp) 96 void *lcv; 97 pcitag_t bustag; 98 int buspin, line; 99 pci_intr_handle_t *ihp; 100 { 101 struct lca_config *lcp = lcv; 102 pci_chipset_tag_t pc = &lcp->lc_pc; 103 int device, pirq; 104 pcireg_t pirqreg; 105 u_int8_t pirqline; 106 107 if (buspin == 0) { 108 /* No IRQ used. */ 109 return 1; 110 } 111 if (buspin > 4) { 112 printf("pci_map_int: bad interrupt pin %d\n", buspin); 113 return 1; 114 } 115 116 pci_decompose_tag(pc, bustag, NULL, &device, NULL); 117 118 switch (device) { 119 case 6: /* NCR SCSI */ 120 pirq = 3; 121 break; 122 123 case 11: /* slot 1 */ 124 switch (buspin) { 125 case PCI_INTERRUPT_PIN_A: 126 case PCI_INTERRUPT_PIN_D: 127 pirq = 0; 128 break; 129 case PCI_INTERRUPT_PIN_B: 130 pirq = 2; 131 break; 132 case PCI_INTERRUPT_PIN_C: 133 pirq = 1; 134 break; 135 }; 136 break; 137 138 case 12: /* slot 2 */ 139 switch (buspin) { 140 case PCI_INTERRUPT_PIN_A: 141 case PCI_INTERRUPT_PIN_D: 142 pirq = 1; 143 break; 144 case PCI_INTERRUPT_PIN_B: 145 pirq = 0; 146 break; 147 case PCI_INTERRUPT_PIN_C: 148 pirq = 2; 149 break; 150 }; 151 break; 152 153 case 8: /* slot 3 */ 154 switch (buspin) { 155 case PCI_INTERRUPT_PIN_A: 156 case PCI_INTERRUPT_PIN_D: 157 pirq = 2; 158 break; 159 case PCI_INTERRUPT_PIN_B: 160 pirq = 1; 161 break; 162 case PCI_INTERRUPT_PIN_C: 163 pirq = 0; 164 break; 165 }; 166 break; 167 default: 168 printf("dec_axppci_33_pci_map_int: unknown device %d\n", 169 device); 170 panic("dec_axppci_33_pci_map_int: bad device number"); 171 } 172 173 pirqreg = pci_conf_read(pc, pci_make_tag(pc, 0, LCA_SIO_DEVICE, 0), 174 SIO_PCIREG_PIRQ_RTCTRL); 175 #if 0 176 printf("pci_axppci_33_map_int: device %d pin %c: pirq %d, reg = %x\n", 177 device, '@' + buspin, pirq, pirqreg); 178 #endif 179 pirqline = (pirqreg >> (pirq * 8)) & 0xff; 180 if ((pirqline & 0x80) != 0) 181 return 1; /* not routed? */ 182 pirqline &= 0xf; 183 184 #if 0 185 printf("pci_axppci_33_map_int: device %d pin %c: mapped to line %d\n", 186 device, '@' + buspin, pirqline); 187 #endif 188 189 *ihp = pirqline; 190 return (0); 191 } 192 193 const char * 194 dec_axppci_33_intr_string(lcv, ih) 195 void *lcv; 196 pci_intr_handle_t ih; 197 { 198 struct lca_config *lcp = lcv; 199 200 return sio_intr_string(NULL /*XXX*/, ih); 201 } 202 203 void * 204 dec_axppci_33_intr_establish(lcv, ih, level, func, arg) 205 void *lcv, *arg; 206 pci_intr_handle_t ih; 207 int level; 208 int (*func) __P((void *)); 209 { 210 struct lca_config *lcp = lcv; 211 212 return sio_intr_establish(NULL /*XXX*/, ih, IST_LEVEL, level, func, 213 arg); 214 } 215 216 void 217 dec_axppci_33_intr_disestablish(lcv, cookie) 218 void *lcv, *cookie; 219 { 220 struct lca_config *lcp = lcv; 221 222 sio_intr_disestablish(NULL /*XXX*/, cookie); 223 } 224
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