eisa_machdep.c revision 1.25.2.1
1 /* $NetBSD: eisa_machdep.c,v 1.25.2.1 2006/03/01 09:27:55 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 1.25.2.1 2006/03/01 09:27:55 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, /* _bounce_thresh */ 105 0, /* _bounce_alloc_lo */ 106 0, /* _bounce_alloc_hi */ 107 NULL, /* _may_bounce */ 108 _bus_dmamap_create, 109 _bus_dmamap_destroy, 110 _bus_dmamap_load, 111 _bus_dmamap_load_mbuf, 112 _bus_dmamap_load_uio, 113 _bus_dmamap_load_raw, 114 _bus_dmamap_unload, 115 NULL, /* _dmamap_sync */ 116 _bus_dmamem_alloc, 117 _bus_dmamem_free, 118 _bus_dmamem_map, 119 _bus_dmamem_unmap, 120 _bus_dmamem_mmap, 121 }; 122 123 void 124 eisa_attach_hook(struct device *parent, struct device *self, 125 struct eisabus_attach_args *eba) 126 { 127 extern int eisa_has_been_seen; 128 129 /* 130 * Notify others that might need to know that the EISA bus 131 * has now been attached. 132 */ 133 if (eisa_has_been_seen) 134 panic("eisaattach: EISA bus already seen!"); 135 eisa_has_been_seen = 1; 136 } 137 138 int 139 eisa_maxslots(eisa_chipset_tag_t ec) 140 { 141 142 /* 143 * Always try 16 slots. 144 */ 145 return (16); 146 } 147 148 int 149 eisa_intr_map(eisa_chipset_tag_t ec, u_int irq, eisa_intr_handle_t *ihp) 150 { 151 if (irq >= NUM_LEGACY_IRQS) { 152 aprint_error("eisa_intr_map: bad IRQ %d\n", irq); 153 *ihp = -1; 154 return 1; 155 } 156 if (irq == 2) { 157 aprint_verbose("eisa_intr_map: changed IRQ 2 to IRQ 9\n"); 158 irq = 9; 159 } 160 161 #if NIOAPIC > 0 162 if (mp_busses != NULL) { 163 if (intr_find_mpmapping(mp_eisa_bus, irq, ihp) == 0 || 164 intr_find_mpmapping(mp_isa_bus, irq, ihp) == 0) { 165 *ihp |= irq; 166 return 0; 167 } else 168 aprint_verbose("eisa_intr_map: no MP mapping found\n"); 169 } 170 #endif 171 172 *ihp = irq; 173 return 0; 174 } 175 176 const char * 177 eisa_intr_string(eisa_chipset_tag_t ec, eisa_intr_handle_t ih) 178 { 179 static char irqstr[8]; /* 4 + 2 + NULL + sanity */ 180 181 if (ih == 0 || (ih & 0xff) >= NUM_LEGACY_IRQS || ih == 2) 182 panic("eisa_intr_string: bogus handle 0x%x", ih); 183 184 #if NIOAPIC > 0 185 if (ih & APIC_INT_VIA_APIC) 186 snprintf(irqstr, sizeof(irqstr), "apic %d int %d (irq %d)", 187 APIC_IRQ_APIC(ih), 188 APIC_IRQ_PIN(ih), 189 ih&0xff); 190 else 191 snprintf(irqstr, sizeof(irqstr), "irq %d", ih&0xff); 192 #else 193 snprintf(irqstr, sizeof(irqstr), "irq %d", ih); 194 #endif 195 return (irqstr); 196 197 } 198 199 const struct evcnt * 200 eisa_intr_evcnt(eisa_chipset_tag_t ec, eisa_intr_handle_t ih) 201 { 202 203 /* XXX for now, no evcnt parent reported */ 204 return NULL; 205 } 206 207 void * 208 eisa_intr_establish(eisa_chipset_tag_t ec, eisa_intr_handle_t ih, 209 int type, int level, int (*func)(void *), void *arg) 210 { 211 int pin, irq; 212 struct pic *pic; 213 214 pic = &i8259_pic; 215 pin = irq = ih; 216 217 #if NIOAPIC > 0 218 if (ih & APIC_INT_VIA_APIC) { 219 pic = (struct pic *)ioapic_find(APIC_IRQ_APIC(ih)); 220 if (pic == NULL) { 221 aprint_error("eisa_intr_establish: bad ioapic %d\n", 222 APIC_IRQ_APIC(ih)); 223 return NULL; 224 } 225 pin = APIC_IRQ_PIN(ih); 226 irq = APIC_IRQ_LEGACY_IRQ(ih); 227 if (irq < 0 || irq >= NUM_LEGACY_IRQS) 228 irq = -1; 229 } 230 #endif 231 232 return intr_establish(irq, pic, pin, type, level, func, arg); 233 } 234 235 void 236 eisa_intr_disestablish(eisa_chipset_tag_t ec, void *cookie) 237 { 238 239 intr_disestablish(cookie); 240 } 241 242 int 243 eisa_mem_alloc(bus_space_tag_t t, bus_size_t size, bus_size_t align, 244 bus_addr_t boundary, int cacheable, 245 bus_addr_t *addrp, bus_space_handle_t *bahp) 246 { 247 extern struct extent *iomem_ex; 248 249 /* 250 * Allocate physical address space after the ISA hole. 251 */ 252 return bus_space_alloc(t, IOM_END, iomem_ex->ex_end, size, align, 253 boundary, cacheable, addrp, bahp); 254 } 255 256 void 257 eisa_mem_free(bus_space_tag_t t, bus_space_handle_t bah, bus_size_t size) 258 { 259 260 bus_space_free(t, bah, size); 261 } 262 263 int 264 eisa_conf_read_mem(eisa_chipset_tag_t ec, int slot, int func, int entry, 265 struct eisa_cfg_mem *ecm) 266 { 267 268 /* XXX XXX XXX */ 269 return (ENOENT); 270 } 271 272 int 273 eisa_conf_read_irq(eisa_chipset_tag_t ec, int slot, int func, int entry, 274 struct eisa_cfg_irq *eci) 275 { 276 277 /* XXX XXX XXX */ 278 return (ENOENT); 279 } 280 281 int 282 eisa_conf_read_dma(eisa_chipset_tag_t ec, int slot, int func, int entry, 283 struct eisa_cfg_dma *ecd) 284 { 285 286 /* XXX XXX XXX */ 287 return (ENOENT); 288 } 289 290 int 291 eisa_conf_read_io(eisa_chipset_tag_t ec, int slot, int func, int entry, 292 struct eisa_cfg_io *ecio) 293 { 294 295 /* XXX XXX XXX */ 296 return (ENOENT); 297 } 298
Indexes created Sun Oct 26 17:10:13 GMT 2025