eisa_machdep.c revision 1.37
1 /* $NetBSD: eisa_machdep.c,v 1.37 2011/09/01 15:10:31 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 1.37 2011/09/01 15:10:31 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) 161 { 162 static char irqstr[8]; /* 4 + 2 + NULL + sanity */ 163 164 if (ih == 0 || (ih & 0xff) >= NUM_LEGACY_IRQS || ih == 2) 165 panic("eisa_intr_string: bogus handle 0x%x", ih); 166 167 #if NIOAPIC > 0 168 if (ih & APIC_INT_VIA_APIC) 169 snprintf(irqstr, sizeof(irqstr), "apic %d int %d (irq %d)", 170 APIC_IRQ_APIC(ih), 171 APIC_IRQ_PIN(ih), 172 ih&0xff); 173 else 174 snprintf(irqstr, sizeof(irqstr), "irq %d", ih&0xff); 175 #else 176 snprintf(irqstr, sizeof(irqstr), "irq %d", ih); 177 #endif 178 return (irqstr); 179 180 } 181 182 const struct evcnt * 183 eisa_intr_evcnt(eisa_chipset_tag_t ec, eisa_intr_handle_t ih) 184 { 185 186 /* XXX for now, no evcnt parent reported */ 187 return NULL; 188 } 189 190 void * 191 eisa_intr_establish(eisa_chipset_tag_t ec, eisa_intr_handle_t ih, 192 int type, int level, int (*func)(void *), void *arg) 193 { 194 int pin, irq; 195 struct pic *pic; 196 197 pic = &i8259_pic; 198 pin = irq = ih; 199 200 #if NIOAPIC > 0 201 if (ih & APIC_INT_VIA_APIC) { 202 pic = (struct pic *)ioapic_find(APIC_IRQ_APIC(ih)); 203 if (pic == NULL) { 204 aprint_error("eisa_intr_establish: bad ioapic %d\n", 205 APIC_IRQ_APIC(ih)); 206 return NULL; 207 } 208 pin = APIC_IRQ_PIN(ih); 209 irq = APIC_IRQ_LEGACY_IRQ(ih); 210 if (irq < 0 || irq >= NUM_LEGACY_IRQS) 211 irq = -1; 212 } 213 #endif 214 215 return intr_establish(irq, pic, pin, type, level, func, arg, false); 216 } 217 218 void 219 eisa_intr_disestablish(eisa_chipset_tag_t ec, void *cookie) 220 { 221 222 intr_disestablish(cookie); 223 } 224 225 int 226 eisa_conf_read_mem(eisa_chipset_tag_t ec, int slot, 227 int func, int entry, struct eisa_cfg_mem *ecm) 228 { 229 230 /* XXX XXX XXX */ 231 return (ENOENT); 232 } 233 234 int 235 eisa_conf_read_irq(eisa_chipset_tag_t ec, int slot, 236 int func, int entry, struct eisa_cfg_irq *eci) 237 { 238 239 /* XXX XXX XXX */ 240 return (ENOENT); 241 } 242 243 int 244 eisa_conf_read_dma(eisa_chipset_tag_t ec, int slot, 245 int func, int entry, struct eisa_cfg_dma *ecd) 246 { 247 248 /* XXX XXX XXX */ 249 return (ENOENT); 250 } 251 252 int 253 eisa_conf_read_io(eisa_chipset_tag_t ec, int slot, 254 int func, int entry, struct eisa_cfg_io *ecio) 255 { 256 257 /* XXX XXX XXX */ 258 return (ENOENT); 259 } 260
Indexes created Sat Oct 25 10:09:55 GMT 2025