eisa_machdep.c revision 1.24.2.3
1 /* $NetBSD: eisa_machdep.c,v 1.24.2.3 2007/02/26 09:06:53 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 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 /* 41 * Copyright (c) 1996 Christopher G. Demetriou. All rights reserved. 42 * 43 * Redistribution and use in source and binary forms, with or without 44 * modification, are permitted provided that the following conditions 45 * are met: 46 * 1. Redistributions of source code must retain the above copyright 47 * notice, this list of conditions and the following disclaimer. 48 * 2. Redistributions in binary form must reproduce the above copyright 49 * notice, this list of conditions and the following disclaimer in the 50 * documentation and/or other materials provided with the distribution. 51 * 3. All advertising materials mentioning features or use of this software 52 * must display the following acknowledgement: 53 * This product includes software developed by Christopher G. Demetriou 54 * for the NetBSD Project. 55 * 4. The name of the author may not be used to endorse or promote products 56 * derived from this software without specific prior written permission 57 * 58 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 59 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 60 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 61 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 62 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 63 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 64 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 65 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 66 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 67 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 68 */ 69 70 /* 71 * Machine-specific functions for EISA autoconfiguration. 72 */ 73 74 #include <sys/cdefs.h> 75 __KERNEL_RCSID(0, "$NetBSD: eisa_machdep.c,v 1.24.2.3 2007/02/26 09:06:53 yamt Exp $"); 76 77 #include "ioapic.h" 78 79 #include <sys/types.h> 80 #include <sys/param.h> 81 #include <sys/time.h> 82 #include <sys/systm.h> 83 #include <sys/errno.h> 84 #include <sys/device.h> 85 #include <sys/extent.h> 86 87 #include <machine/bus.h> 88 #include <machine/bus_private.h> 89 90 #include <dev/isa/isareg.h> 91 #include <dev/isa/isavar.h> 92 #include <dev/eisa/eisavar.h> 93 94 #if NIOAPIC > 0 95 #include <machine/i82093var.h> 96 #include <machine/mpbiosvar.h> 97 #endif 98 99 /* 100 * EISA doesn't have any special needs; just use the generic versions 101 * of these funcions. 102 */ 103 struct x86_bus_dma_tag eisa_bus_dma_tag = { 104 0, /* _tag_needs_free */ 105 0, /* _bounce_thresh */ 106 0, /* _bounce_alloc_lo */ 107 0, /* _bounce_alloc_hi */ 108 NULL, /* _may_bounce */ 109 _bus_dmamap_create, 110 _bus_dmamap_destroy, 111 _bus_dmamap_load, 112 _bus_dmamap_load_mbuf, 113 _bus_dmamap_load_uio, 114 _bus_dmamap_load_raw, 115 _bus_dmamap_unload, 116 NULL, /* _dmamap_sync */ 117 _bus_dmamem_alloc, 118 _bus_dmamem_free, 119 _bus_dmamem_map, 120 _bus_dmamem_unmap, 121 _bus_dmamem_mmap, 122 _bus_dmatag_subregion, 123 _bus_dmatag_destroy, 124 }; 125 126 void 127 eisa_attach_hook(struct device *parent, struct device *self, 128 struct eisabus_attach_args *eba) 129 { 130 extern int eisa_has_been_seen; 131 132 /* 133 * Notify others that might need to know that the EISA bus 134 * has now been attached. 135 */ 136 if (eisa_has_been_seen) 137 panic("eisaattach: EISA bus already seen!"); 138 eisa_has_been_seen = 1; 139 } 140 141 int 142 eisa_maxslots(eisa_chipset_tag_t ec) 143 { 144 145 /* 146 * Always try 16 slots. 147 */ 148 return (16); 149 } 150 151 int 152 eisa_intr_map(eisa_chipset_tag_t ec, u_int irq, 153 eisa_intr_handle_t *ihp) 154 { 155 if (irq >= NUM_LEGACY_IRQS) { 156 aprint_error("eisa_intr_map: bad IRQ %d\n", irq); 157 *ihp = -1; 158 return 1; 159 } 160 if (irq == 2) { 161 aprint_verbose("eisa_intr_map: changed IRQ 2 to IRQ 9\n"); 162 irq = 9; 163 } 164 165 #if NIOAPIC > 0 166 if (mp_busses != NULL) { 167 if (intr_find_mpmapping(mp_eisa_bus, irq, ihp) == 0 || 168 intr_find_mpmapping(mp_isa_bus, irq, ihp) == 0) { 169 *ihp |= irq; 170 return 0; 171 } else 172 aprint_verbose("eisa_intr_map: no MP mapping found\n"); 173 } 174 #endif 175 176 *ihp = irq; 177 return 0; 178 } 179 180 const char * 181 eisa_intr_string(eisa_chipset_tag_t ec, eisa_intr_handle_t ih) 182 { 183 static char irqstr[8]; /* 4 + 2 + NULL + sanity */ 184 185 if (ih == 0 || (ih & 0xff) >= NUM_LEGACY_IRQS || ih == 2) 186 panic("eisa_intr_string: bogus handle 0x%x", ih); 187 188 #if NIOAPIC > 0 189 if (ih & APIC_INT_VIA_APIC) 190 snprintf(irqstr, sizeof(irqstr), "apic %d int %d (irq %d)", 191 APIC_IRQ_APIC(ih), 192 APIC_IRQ_PIN(ih), 193 ih&0xff); 194 else 195 snprintf(irqstr, sizeof(irqstr), "irq %d", ih&0xff); 196 #else 197 snprintf(irqstr, sizeof(irqstr), "irq %d", ih); 198 #endif 199 return (irqstr); 200 201 } 202 203 const struct evcnt * 204 eisa_intr_evcnt(eisa_chipset_tag_t ec, eisa_intr_handle_t ih) 205 { 206 207 /* XXX for now, no evcnt parent reported */ 208 return NULL; 209 } 210 211 void * 212 eisa_intr_establish(eisa_chipset_tag_t ec, eisa_intr_handle_t ih, 213 int type, int level, int (*func)(void *), void *arg) 214 { 215 int pin, irq; 216 struct pic *pic; 217 218 pic = &i8259_pic; 219 pin = irq = ih; 220 221 #if NIOAPIC > 0 222 if (ih & APIC_INT_VIA_APIC) { 223 pic = (struct pic *)ioapic_find(APIC_IRQ_APIC(ih)); 224 if (pic == NULL) { 225 aprint_error("eisa_intr_establish: bad ioapic %d\n", 226 APIC_IRQ_APIC(ih)); 227 return NULL; 228 } 229 pin = APIC_IRQ_PIN(ih); 230 irq = APIC_IRQ_LEGACY_IRQ(ih); 231 if (irq < 0 || irq >= NUM_LEGACY_IRQS) 232 irq = -1; 233 } 234 #endif 235 236 return intr_establish(irq, pic, pin, type, level, func, arg); 237 } 238 239 void 240 eisa_intr_disestablish(eisa_chipset_tag_t ec, void *cookie) 241 { 242 243 intr_disestablish(cookie); 244 } 245 246 int 247 eisa_mem_alloc(bus_space_tag_t t, bus_size_t size, bus_size_t align, 248 bus_addr_t boundary, int cacheable, 249 bus_addr_t *addrp, bus_space_handle_t *bahp) 250 { 251 extern struct extent *iomem_ex; 252 253 /* 254 * Allocate physical address space after the ISA hole. 255 */ 256 return bus_space_alloc(t, IOM_END, iomem_ex->ex_end, size, align, 257 boundary, cacheable, addrp, bahp); 258 } 259 260 void 261 eisa_mem_free(bus_space_tag_t t, bus_space_handle_t bah, bus_size_t size) 262 { 263 264 bus_space_free(t, bah, size); 265 } 266 267 int 268 eisa_conf_read_mem(eisa_chipset_tag_t ec, int slot, 269 int func, int entry, struct eisa_cfg_mem *ecm) 270 { 271 272 /* XXX XXX XXX */ 273 return (ENOENT); 274 } 275 276 int 277 eisa_conf_read_irq(eisa_chipset_tag_t ec, int slot, 278 int func, int entry, struct eisa_cfg_irq *eci) 279 { 280 281 /* XXX XXX XXX */ 282 return (ENOENT); 283 } 284 285 int 286 eisa_conf_read_dma(eisa_chipset_tag_t ec, int slot, 287 int func, int entry, struct eisa_cfg_dma *ecd) 288 { 289 290 /* XXX XXX XXX */ 291 return (ENOENT); 292 } 293 294 int 295 eisa_conf_read_io(eisa_chipset_tag_t ec, int slot, 296 int func, int entry, struct eisa_cfg_io *ecio) 297 { 298 299 /* XXX XXX XXX */ 300 return (ENOENT); 301 } 302
Indexes created Sat Oct 25 10:09:55 GMT 2025