eisa_machdep.c revision 1.29.46.3
1 /* $NetBSD: eisa_machdep.c,v 1.29.46.3 2010/03/11 15:02:28 yamt 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 1.29.46.3 2010/03/11 15:02:28 yamt 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 <machine/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 struct x86_bus_dma_tag eisa_bus_dma_tag = { 96 0, /* _tag_needs_free */ 97 0, /* _bounce_thresh */ 98 0, /* _bounce_alloc_lo */ 99 0, /* _bounce_alloc_hi */ 100 NULL, /* _may_bounce */ 101 _bus_dmamap_create, 102 _bus_dmamap_destroy, 103 _bus_dmamap_load, 104 _bus_dmamap_load_mbuf, 105 _bus_dmamap_load_uio, 106 _bus_dmamap_load_raw, 107 _bus_dmamap_unload, 108 NULL, /* _dmamap_sync */ 109 _bus_dmamem_alloc, 110 _bus_dmamem_free, 111 _bus_dmamem_map, 112 _bus_dmamem_unmap, 113 _bus_dmamem_mmap, 114 _bus_dmatag_subregion, 115 _bus_dmatag_destroy, 116 }; 117 118 void 119 eisa_attach_hook(device_t parent, device_t self, 120 struct eisabus_attach_args *eba) 121 { 122 extern int eisa_has_been_seen; 123 124 /* 125 * Notify others that might need to know that the EISA bus 126 * has now been attached. 127 */ 128 if (eisa_has_been_seen) 129 panic("eisaattach: EISA bus already seen!"); 130 eisa_has_been_seen = 1; 131 } 132 133 int 134 eisa_maxslots(eisa_chipset_tag_t ec) 135 { 136 137 /* 138 * Always try 16 slots. 139 */ 140 return (16); 141 } 142 143 int 144 eisa_intr_map(eisa_chipset_tag_t ec, u_int irq, 145 eisa_intr_handle_t *ihp) 146 { 147 if (irq >= NUM_LEGACY_IRQS) { 148 aprint_error("eisa_intr_map: bad IRQ %d\n", irq); 149 *ihp = -1; 150 return 1; 151 } 152 if (irq == 2) { 153 aprint_verbose("eisa_intr_map: changed IRQ 2 to IRQ 9\n"); 154 irq = 9; 155 } 156 157 #if NIOAPIC > 0 158 if (mp_busses != NULL) { 159 if (intr_find_mpmapping(mp_eisa_bus, irq, ihp) == 0 || 160 intr_find_mpmapping(mp_isa_bus, irq, ihp) == 0) { 161 *ihp |= irq; 162 return 0; 163 } else 164 aprint_verbose("eisa_intr_map: no MP mapping found\n"); 165 } 166 #endif 167 168 *ihp = irq; 169 return 0; 170 } 171 172 const char * 173 eisa_intr_string(eisa_chipset_tag_t ec, eisa_intr_handle_t ih) 174 { 175 static char irqstr[8]; /* 4 + 2 + NULL + sanity */ 176 177 if (ih == 0 || (ih & 0xff) >= NUM_LEGACY_IRQS || ih == 2) 178 panic("eisa_intr_string: bogus handle 0x%x", ih); 179 180 #if NIOAPIC > 0 181 if (ih & APIC_INT_VIA_APIC) 182 snprintf(irqstr, sizeof(irqstr), "apic %d int %d (irq %d)", 183 APIC_IRQ_APIC(ih), 184 APIC_IRQ_PIN(ih), 185 ih&0xff); 186 else 187 snprintf(irqstr, sizeof(irqstr), "irq %d", ih&0xff); 188 #else 189 snprintf(irqstr, sizeof(irqstr), "irq %d", ih); 190 #endif 191 return (irqstr); 192 193 } 194 195 const struct evcnt * 196 eisa_intr_evcnt(eisa_chipset_tag_t ec, eisa_intr_handle_t ih) 197 { 198 199 /* XXX for now, no evcnt parent reported */ 200 return NULL; 201 } 202 203 void * 204 eisa_intr_establish(eisa_chipset_tag_t ec, eisa_intr_handle_t ih, 205 int type, int level, int (*func)(void *), void *arg) 206 { 207 int pin, irq; 208 struct pic *pic; 209 210 pic = &i8259_pic; 211 pin = irq = ih; 212 213 #if NIOAPIC > 0 214 if (ih & APIC_INT_VIA_APIC) { 215 pic = (struct pic *)ioapic_find(APIC_IRQ_APIC(ih)); 216 if (pic == NULL) { 217 aprint_error("eisa_intr_establish: bad ioapic %d\n", 218 APIC_IRQ_APIC(ih)); 219 return NULL; 220 } 221 pin = APIC_IRQ_PIN(ih); 222 irq = APIC_IRQ_LEGACY_IRQ(ih); 223 if (irq < 0 || irq >= NUM_LEGACY_IRQS) 224 irq = -1; 225 } 226 #endif 227 228 return intr_establish(irq, pic, pin, type, level, func, arg, false); 229 } 230 231 void 232 eisa_intr_disestablish(eisa_chipset_tag_t ec, void *cookie) 233 { 234 235 intr_disestablish(cookie); 236 } 237 238 int 239 eisa_conf_read_mem(eisa_chipset_tag_t ec, int slot, 240 int func, int entry, struct eisa_cfg_mem *ecm) 241 { 242 243 /* XXX XXX XXX */ 244 return (ENOENT); 245 } 246 247 int 248 eisa_conf_read_irq(eisa_chipset_tag_t ec, int slot, 249 int func, int entry, struct eisa_cfg_irq *eci) 250 { 251 252 /* XXX XXX XXX */ 253 return (ENOENT); 254 } 255 256 int 257 eisa_conf_read_dma(eisa_chipset_tag_t ec, int slot, 258 int func, int entry, struct eisa_cfg_dma *ecd) 259 { 260 261 /* XXX XXX XXX */ 262 return (ENOENT); 263 } 264 265 int 266 eisa_conf_read_io(eisa_chipset_tag_t ec, int slot, 267 int func, int entry, struct eisa_cfg_io *ecio) 268 { 269 270 /* XXX XXX XXX */ 271 return (ENOENT); 272 } 273
Indexes created Sat Oct 25 16:10:12 GMT 2025