eisa_machdep.c revision 1.24.2.2
1 /* $NetBSD: eisa_machdep.c,v 1.24.2.2 2006/12/30 20:46:08 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 1.24.2.2 2006/12/30 20:46:08 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, 150 eisa_intr_handle_t *ihp) 151 { 152 if (irq >= NUM_LEGACY_IRQS) { 153 aprint_error("eisa_intr_map: bad IRQ %d\n", irq); 154 *ihp = -1; 155 return 1; 156 } 157 if (irq == 2) { 158 aprint_verbose("eisa_intr_map: changed IRQ 2 to IRQ 9\n"); 159 irq = 9; 160 } 161 162 #if NIOAPIC > 0 163 if (mp_busses != NULL) { 164 if (intr_find_mpmapping(mp_eisa_bus, irq, ihp) == 0 || 165 intr_find_mpmapping(mp_isa_bus, irq, ihp) == 0) { 166 *ihp |= irq; 167 return 0; 168 } else 169 aprint_verbose("eisa_intr_map: no MP mapping found\n"); 170 } 171 #endif 172 173 *ihp = irq; 174 return 0; 175 } 176 177 const char * 178 eisa_intr_string(eisa_chipset_tag_t ec, eisa_intr_handle_t ih) 179 { 180 static char irqstr[8]; /* 4 + 2 + NULL + sanity */ 181 182 if (ih == 0 || (ih & 0xff) >= NUM_LEGACY_IRQS || ih == 2) 183 panic("eisa_intr_string: bogus handle 0x%x", ih); 184 185 #if NIOAPIC > 0 186 if (ih & APIC_INT_VIA_APIC) 187 snprintf(irqstr, sizeof(irqstr), "apic %d int %d (irq %d)", 188 APIC_IRQ_APIC(ih), 189 APIC_IRQ_PIN(ih), 190 ih&0xff); 191 else 192 snprintf(irqstr, sizeof(irqstr), "irq %d", ih&0xff); 193 #else 194 snprintf(irqstr, sizeof(irqstr), "irq %d", ih); 195 #endif 196 return (irqstr); 197 198 } 199 200 const struct evcnt * 201 eisa_intr_evcnt(eisa_chipset_tag_t ec, eisa_intr_handle_t ih) 202 { 203 204 /* XXX for now, no evcnt parent reported */ 205 return NULL; 206 } 207 208 void * 209 eisa_intr_establish(eisa_chipset_tag_t ec, eisa_intr_handle_t ih, 210 int type, int level, int (*func)(void *), void *arg) 211 { 212 int pin, irq; 213 struct pic *pic; 214 215 pic = &i8259_pic; 216 pin = irq = ih; 217 218 #if NIOAPIC > 0 219 if (ih & APIC_INT_VIA_APIC) { 220 pic = (struct pic *)ioapic_find(APIC_IRQ_APIC(ih)); 221 if (pic == NULL) { 222 aprint_error("eisa_intr_establish: bad ioapic %d\n", 223 APIC_IRQ_APIC(ih)); 224 return NULL; 225 } 226 pin = APIC_IRQ_PIN(ih); 227 irq = APIC_IRQ_LEGACY_IRQ(ih); 228 if (irq < 0 || irq >= NUM_LEGACY_IRQS) 229 irq = -1; 230 } 231 #endif 232 233 return intr_establish(irq, pic, pin, type, level, func, arg); 234 } 235 236 void 237 eisa_intr_disestablish(eisa_chipset_tag_t ec, void *cookie) 238 { 239 240 intr_disestablish(cookie); 241 } 242 243 int 244 eisa_mem_alloc(bus_space_tag_t t, bus_size_t size, bus_size_t align, 245 bus_addr_t boundary, int cacheable, 246 bus_addr_t *addrp, bus_space_handle_t *bahp) 247 { 248 extern struct extent *iomem_ex; 249 250 /* 251 * Allocate physical address space after the ISA hole. 252 */ 253 return bus_space_alloc(t, IOM_END, iomem_ex->ex_end, size, align, 254 boundary, cacheable, addrp, bahp); 255 } 256 257 void 258 eisa_mem_free(bus_space_tag_t t, bus_space_handle_t bah, bus_size_t size) 259 { 260 261 bus_space_free(t, bah, size); 262 } 263 264 int 265 eisa_conf_read_mem(eisa_chipset_tag_t ec, int slot, 266 int func, int entry, struct eisa_cfg_mem *ecm) 267 { 268 269 /* XXX XXX XXX */ 270 return (ENOENT); 271 } 272 273 int 274 eisa_conf_read_irq(eisa_chipset_tag_t ec, int slot, 275 int func, int entry, struct eisa_cfg_irq *eci) 276 { 277 278 /* XXX XXX XXX */ 279 return (ENOENT); 280 } 281 282 int 283 eisa_conf_read_dma(eisa_chipset_tag_t ec, int slot, 284 int func, int entry, struct eisa_cfg_dma *ecd) 285 { 286 287 /* XXX XXX XXX */ 288 return (ENOENT); 289 } 290 291 int 292 eisa_conf_read_io(eisa_chipset_tag_t ec, int slot, 293 int func, int entry, struct eisa_cfg_io *ecio) 294 { 295 296 /* XXX XXX XXX */ 297 return (ENOENT); 298 } 299
Indexes created Sun Oct 26 13:09:57 GMT 2025