1 /* $NetBSD: eisa_machdep.c,v 1.39 2014/03/29 19:28:28 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 1997, 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 * NASA Ames Research Center. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 /* 34 * Copyright (c) 1996 Christopher G. Demetriou. All rights reserved. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 1. Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * 2. Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in the 43 * documentation and/or other materials provided with the distribution. 44 * 3. All advertising materials mentioning features or use of this software 45 * must display the following acknowledgement: 46 * This product includes software developed by Christopher G. Demetriou 47 * for the NetBSD Project. 48 * 4. The name of the author may not be used to endorse or promote products 49 * derived from this software without specific prior written permission 50 * 51 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 52 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 53 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 54 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 55 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 56 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 57 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 58 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 59 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 60 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 61 */ 62 63 /* 64 * Machine-specific functions for EISA autoconfiguration. 65 */ 66 67 #include <sys/cdefs.h> 68 __KERNEL_RCSID(0, "$NetBSD: eisa_machdep.c,v 1.39 2014/03/29 19:28:28 christos Exp $"); 69 70 #include "ioapic.h" 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/device.h> 78 79 #include <sys/bus.h> 80 #include <machine/bus_private.h> 81 82 #include <dev/isa/isareg.h> 83 #include <dev/isa/isavar.h> 84 #include <dev/eisa/eisavar.h> 85 86 #if NIOAPIC > 0 87 #include <machine/i82093var.h> 88 #include <machine/mpbiosvar.h> 89 #endif 90 91 /* 92 * EISA doesn't have any special needs; just use the generic versions 93 * of these funcions. 94 * 95 * XXX really doesn't use bounce buffers? --dyoung 96 */ 97 struct x86_bus_dma_tag eisa_bus_dma_tag = { 98 ._tag_needs_free = 0, 99 ._bounce_thresh = 0, 100 ._bounce_alloc_lo = 0, 101 ._bounce_alloc_hi = 0, 102 ._may_bounce = NULL, 103 }; 104 105 void 106 eisa_attach_hook(device_t parent, device_t self, 107 struct eisabus_attach_args *eba) 108 { 109 extern int eisa_has_been_seen; 110 111 /* 112 * Notify others that might need to know that the EISA bus 113 * has now been attached. 114 */ 115 if (eisa_has_been_seen) 116 panic("eisaattach: EISA bus already seen!"); 117 eisa_has_been_seen = 1; 118 } 119 120 int 121 eisa_maxslots(eisa_chipset_tag_t ec) 122 { 123 124 /* 125 * Always try 16 slots. 126 */ 127 return (16); 128 } 129 130 int 131 eisa_intr_map(eisa_chipset_tag_t ec, u_int irq, 132 eisa_intr_handle_t *ihp) 133 { 134 if (irq >= NUM_LEGACY_IRQS) { 135 aprint_error("eisa_intr_map: bad IRQ %d\n", irq); 136 *ihp = -1; 137 return 1; 138 } 139 if (irq == 2) { 140 aprint_verbose("eisa_intr_map: changed IRQ 2 to IRQ 9\n"); 141 irq = 9; 142 } 143 144 #if NIOAPIC > 0 145 if (mp_busses != NULL) { 146 if (intr_find_mpmapping(mp_eisa_bus, irq, ihp) == 0 || 147 intr_find_mpmapping(mp_isa_bus, irq, ihp) == 0) { 148 *ihp |= irq; 149 return 0; 150 } else 151 aprint_verbose("eisa_intr_map: no MP mapping found\n"); 152 } 153 #endif 154 155 *ihp = irq; 156 return 0; 157 } 158 159 const char * 160 eisa_intr_string(eisa_chipset_tag_t ec, eisa_intr_handle_t ih, char *buf, 161 size_t len) 162 { 163 if (ih == 0 || (ih & 0xff) >= NUM_LEGACY_IRQS || ih == 2) 164 panic("eisa_intr_string: bogus handle 0x%x", ih); 165 166 #if NIOAPIC > 0 167 if (ih & APIC_INT_VIA_APIC) 168 snprintf(buf, len, "apic %d int %d (irq %d)", 169 APIC_IRQ_APIC(ih), 170 APIC_IRQ_PIN(ih), 171 ih&0xff); 172 else 173 snprintf(buf, len, "irq %d", ih&0xff); 174 #else 175 snprintf(buf, len, "irq %d", ih); 176 #endif 177 return buf; 178 } 179 180 const struct evcnt * 181 eisa_intr_evcnt(eisa_chipset_tag_t ec, eisa_intr_handle_t ih) 182 { 183 184 /* XXX for now, no evcnt parent reported */ 185 return NULL; 186 } 187 188 void * 189 eisa_intr_establish(eisa_chipset_tag_t ec, eisa_intr_handle_t ih, 190 int type, int level, int (*func)(void *), void *arg) 191 { 192 int pin, irq; 193 struct pic *pic; 194 195 pic = &i8259_pic; 196 pin = irq = ih; 197 198 #if NIOAPIC > 0 199 if (ih & APIC_INT_VIA_APIC) { 200 struct ioapic_softc * const ioapic = ioapic_find(APIC_IRQ_APIC(ih)); 201 if (ioapic == NULL) { 202 aprint_normal("eisa_intr_establish: bad ioapic %d\n", 203 APIC_IRQ_APIC(ih)); 204 return NULL; 205 } 206 pic = &ioapic->sc_pic; 207 pin = APIC_IRQ_PIN(ih); 208 irq = APIC_IRQ_LEGACY_IRQ(ih); 209 if (irq < 0 || irq >= NUM_LEGACY_IRQS) 210 irq = -1; 211 } 212 #endif 213 214 return intr_establish(irq, pic, pin, type, level, func, arg, false); 215 } 216 217 void 218 eisa_intr_disestablish(eisa_chipset_tag_t ec, void *cookie) 219 { 220 221 intr_disestablish(cookie); 222 } 223 224 int 225 eisa_conf_read_mem(eisa_chipset_tag_t ec, int slot, 226 int func, int entry, struct eisa_cfg_mem *ecm) 227 { 228 229 /* XXX XXX XXX */ 230 return (ENOENT); 231 } 232 233 int 234 eisa_conf_read_irq(eisa_chipset_tag_t ec, int slot, 235 int func, int entry, struct eisa_cfg_irq *eci) 236 { 237 238 /* XXX XXX XXX */ 239 return (ENOENT); 240 } 241 242 int 243 eisa_conf_read_dma(eisa_chipset_tag_t ec, int slot, 244 int func, int entry, struct eisa_cfg_dma *ecd) 245 { 246 247 /* XXX XXX XXX */ 248 return (ENOENT); 249 } 250 251 int 252 eisa_conf_read_io(eisa_chipset_tag_t ec, int slot, 253 int func, int entry, struct eisa_cfg_io *ecio) 254 { 255 256 /* XXX XXX XXX */ 257 return (ENOENT); 258 } 259