pci_1000.c revision 1.13
1 /* $NetBSD: pci_1000.c,v 1.13 2002/05/15 16:57:42 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is based on pci_kn20aa.c, written by Chris G. Demetriou at 8 * Carnegie-Mellon University. Platform support for Mikasa and Mikasa/Pinnacle 9 * (Pinkasa) by Ross Harvey with copyright assignment by permission of Avalon 10 * Computer Systems, Inc. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the NetBSD 23 * Foundation, Inc. and its contributors. 24 * 4. Neither the name of The NetBSD Foundation nor the names of its 25 * contributors may be used to endorse or promote products derived 26 * from this software without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 29 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 30 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 31 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 32 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 33 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 34 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 35 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 36 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 37 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 38 * POSSIBILITY OF SUCH DAMAGE. 39 */ 40 41 /* 42 * Copyright (c) 1995, 1996 Carnegie-Mellon University. 43 * All rights reserved. 44 * 45 * Author: Chris G. Demetriou 46 * 47 * Permission to use, copy, modify and distribute this software and 48 * its documentation is hereby granted, provided that both the copyright 49 * notice and this permission notice appear in all copies of the 50 * software, derivative works or modified versions, and any portions 51 * thereof, and that both notices appear in supporting documentation. 52 * 53 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 54 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 55 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 56 * 57 * Carnegie Mellon requests users of this software to return to 58 * 59 * Software Distribution Coordinator or Software.Distribution (at) CS.CMU.EDU 60 * School of Computer Science 61 * Carnegie Mellon University 62 * Pittsburgh PA 15213-3890 63 * 64 * any improvements or extensions that they make and grant Carnegie the 65 * rights to redistribute these changes. 66 */ 67 68 #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */ 69 70 __KERNEL_RCSID(0, "$NetBSD: pci_1000.c,v 1.13 2002/05/15 16:57:42 thorpej Exp $"); 71 72 #include <sys/types.h> 73 #include <sys/param.h> 74 #include <sys/time.h> 75 #include <sys/systm.h> 76 #include <sys/errno.h> 77 #include <sys/malloc.h> 78 #include <sys/device.h> 79 #include <sys/syslog.h> 80 81 #include <uvm/uvm_extern.h> 82 83 #include <machine/autoconf.h> 84 85 #include <dev/pci/pcireg.h> 86 #include <dev/pci/pcivar.h> 87 88 #include <alpha/pci/pci_1000.h> 89 90 #include "sio.h" 91 #if NSIO > 0 || NPCEB > 0 92 #include <alpha/pci/siovar.h> 93 #endif 94 95 static bus_space_tag_t another_mystery_icu_iot; 96 static bus_space_handle_t another_mystery_icu_ioh; 97 98 int dec_1000_intr_map __P((struct pci_attach_args *, pci_intr_handle_t *)); 99 const char *dec_1000_intr_string __P((void *, pci_intr_handle_t)); 100 const struct evcnt *dec_1000_intr_evcnt __P((void *, pci_intr_handle_t)); 101 void *dec_1000_intr_establish __P((void *, pci_intr_handle_t, 102 int, int (*func)(void *), void *)); 103 void dec_1000_intr_disestablish __P((void *, void *)); 104 105 #define PCI_NIRQ 16 106 #define PCI_STRAY_MAX 5 107 108 struct alpha_shared_intr *dec_1000_pci_intr; 109 110 static void dec_1000_iointr __P((void *arg, unsigned long vec)); 111 static void dec_1000_enable_intr __P((int irq)); 112 static void dec_1000_disable_intr __P((int irq)); 113 static void pci_1000_imi __P((void)); 114 static pci_chipset_tag_t pc_tag; 115 116 void 117 pci_1000_pickintr(core, iot, memt, pc) 118 void *core; 119 bus_space_tag_t iot, memt; 120 pci_chipset_tag_t pc; 121 { 122 char *cp; 123 int i; 124 125 another_mystery_icu_iot = iot; 126 127 pc_tag = pc; 128 if (bus_space_map(iot, 0x536, 2, 0, &another_mystery_icu_ioh)) 129 panic("pci_1000_pickintr"); 130 pc->pc_intr_v = core; 131 pc->pc_intr_map = dec_1000_intr_map; 132 pc->pc_intr_string = dec_1000_intr_string; 133 pc->pc_intr_evcnt = dec_1000_intr_evcnt; 134 pc->pc_intr_establish = dec_1000_intr_establish; 135 pc->pc_intr_disestablish = dec_1000_intr_disestablish; 136 137 pc->pc_pciide_compat_intr_establish = NULL; 138 139 dec_1000_pci_intr = 140 alpha_shared_intr_alloc(PCI_NIRQ, 8); 141 for (i = 0; i < PCI_NIRQ; i++) { 142 alpha_shared_intr_set_maxstrays(dec_1000_pci_intr, i, 143 PCI_STRAY_MAX); 144 145 cp = alpha_shared_intr_string(dec_1000_pci_intr, i); 146 sprintf(cp, "irq %d", i); 147 evcnt_attach_dynamic(alpha_shared_intr_evcnt( 148 dec_1000_pci_intr, i), EVCNT_TYPE_INTR, NULL, 149 "dec_1000", cp); 150 } 151 152 pci_1000_imi(); 153 #if NSIO > 0 || NPCEB > 0 154 sio_intr_setup(pc, iot); 155 #endif 156 } 157 158 int 159 dec_1000_intr_map(pa, ihp) 160 struct pci_attach_args *pa; 161 pci_intr_handle_t *ihp; 162 { 163 pcitag_t bustag = pa->pa_intrtag; 164 int buspin = pa->pa_intrpin; 165 pci_chipset_tag_t pc = pa->pa_pc; 166 int device; 167 168 if (buspin == 0) /* No IRQ used. */ 169 return 1; 170 if (!(1 <= buspin && buspin <= 4)) 171 goto bad; 172 173 pci_decompose_tag(pc, bustag, NULL, &device, NULL); 174 175 switch(device) { 176 case 6: 177 if(buspin != 1) 178 break; 179 *ihp = 0xc; /* integrated ncr scsi */ 180 return 0; 181 case 11: 182 case 12: 183 case 13: 184 *ihp = (device - 11) * 4 + buspin - 1; 185 return 0; 186 } 187 188 bad: printf("dec_1000_intr_map: can't map dev %d pin %d\n", device, buspin); 189 return 1; 190 } 191 192 const char * 193 dec_1000_intr_string(ccv, ih) 194 void *ccv; 195 pci_intr_handle_t ih; 196 { 197 static const char irqmsg_fmt[] = "dec_1000 irq %ld"; 198 static char irqstr[sizeof irqmsg_fmt]; 199 200 if (ih >= PCI_NIRQ) 201 panic("dec_1000_intr_string: bogus dec_1000 IRQ 0x%lx\n", ih); 202 203 snprintf(irqstr, sizeof irqstr, irqmsg_fmt, ih); 204 return (irqstr); 205 } 206 207 const struct evcnt * 208 dec_1000_intr_evcnt(ccv, ih) 209 void *ccv; 210 pci_intr_handle_t ih; 211 { 212 213 if (ih >= PCI_NIRQ) 214 panic("dec_1000_intr_evcnt: bogus dec_1000 IRQ 0x%lx\n", ih); 215 216 return (alpha_shared_intr_evcnt(dec_1000_pci_intr, ih)); 217 } 218 219 void * 220 dec_1000_intr_establish(ccv, ih, level, func, arg) 221 void *ccv, *arg; 222 pci_intr_handle_t ih; 223 int level; 224 int (*func) __P((void *)); 225 { 226 void *cookie; 227 228 if (ih >= PCI_NIRQ) 229 panic("dec_1000_intr_establish: IRQ too high, 0x%lx\n", ih); 230 231 cookie = alpha_shared_intr_establish(dec_1000_pci_intr, ih, IST_LEVEL, 232 level, func, arg, "dec_1000 irq"); 233 234 if (cookie != NULL && 235 alpha_shared_intr_firstactive(dec_1000_pci_intr, ih)) { 236 scb_set(0x900 + SCB_IDXTOVEC(ih), dec_1000_iointr, NULL); 237 dec_1000_enable_intr(ih); 238 } 239 return (cookie); 240 } 241 242 void 243 dec_1000_intr_disestablish(ccv, cookie) 244 void *ccv, *cookie; 245 { 246 struct alpha_shared_intrhand *ih = cookie; 247 unsigned int irq = ih->ih_num; 248 int s; 249 250 s = splhigh(); 251 252 alpha_shared_intr_disestablish(dec_1000_pci_intr, cookie, 253 "dec_1000 irq"); 254 if (alpha_shared_intr_isactive(dec_1000_pci_intr, irq) == 0) { 255 dec_1000_disable_intr(irq); 256 alpha_shared_intr_set_dfltsharetype(dec_1000_pci_intr, irq, 257 IST_NONE); 258 scb_free(0x900 + SCB_IDXTOVEC(irq)); 259 } 260 261 splx(s); 262 } 263 264 static void 265 dec_1000_iointr(arg, vec) 266 void *arg; 267 unsigned long vec; 268 { 269 int irq; 270 271 irq = SCB_VECTOIDX(vec - 0x900); 272 273 if (!alpha_shared_intr_dispatch(dec_1000_pci_intr, irq)) { 274 alpha_shared_intr_stray(dec_1000_pci_intr, irq, 275 "dec_1000 irq"); 276 if (ALPHA_SHARED_INTR_DISABLE(dec_1000_pci_intr, irq)) 277 dec_1000_disable_intr(irq); 278 } 279 } 280 281 /* 282 * Read and write the mystery ICU IMR registers 283 */ 284 285 #define IR() bus_space_read_2(another_mystery_icu_iot, \ 286 another_mystery_icu_ioh, 0) 287 288 #define IW(v) bus_space_write_2(another_mystery_icu_iot, \ 289 another_mystery_icu_ioh, 0, (v)) 290 291 /* 292 * Enable and disable interrupts at the ICU level 293 */ 294 295 static void 296 dec_1000_enable_intr(irq) 297 int irq; 298 { 299 IW(IR() | 1 << irq); 300 } 301 302 static void 303 dec_1000_disable_intr(irq) 304 int irq; 305 { 306 IW(IR() & ~(1 << irq)); 307 } 308 /* 309 * Initialize mystery ICU 310 */ 311 static void 312 pci_1000_imi() 313 { 314 IW(0); /* XXX ?? */ 315 } 316
Indexes created Mon Sep 29 15:09:53 GMT 2025