eisa_machdep.c revision 1.30
1/* $NetBSD: eisa_machdep.c,v 1.30 2008/04/28 20:23:23 martin 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 1.30 2008/04/28 20:23:23 martin 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#include <sys/extent.h> 79 80#include <machine/bus.h> 81#include <machine/bus_private.h> 82 83#include <dev/isa/isareg.h> 84#include <dev/isa/isavar.h> 85#include <dev/eisa/eisavar.h> 86 87#if NIOAPIC > 0 88#include <machine/i82093var.h> 89#include <machine/mpbiosvar.h> 90#endif 91 92/* 93 * EISA doesn't have any special needs; just use the generic versions 94 * of these funcions. 95 */ 96struct x86_bus_dma_tag eisa_bus_dma_tag = { 97 0, /* _tag_needs_free */ 98 0, /* _bounce_thresh */ 99 0, /* _bounce_alloc_lo */ 100 0, /* _bounce_alloc_hi */ 101 NULL, /* _may_bounce */ 102 _bus_dmamap_create, 103 _bus_dmamap_destroy, 104 _bus_dmamap_load, 105 _bus_dmamap_load_mbuf, 106 _bus_dmamap_load_uio, 107 _bus_dmamap_load_raw, 108 _bus_dmamap_unload, 109 NULL, /* _dmamap_sync */ 110 _bus_dmamem_alloc, 111 _bus_dmamem_free, 112 _bus_dmamem_map, 113 _bus_dmamem_unmap, 114 _bus_dmamem_mmap, 115 _bus_dmatag_subregion, 116 _bus_dmatag_destroy, 117}; 118 119void 120eisa_attach_hook(struct device *parent, struct device *self, 121 struct eisabus_attach_args *eba) 122{ 123 extern int eisa_has_been_seen; 124 125 /* 126 * Notify others that might need to know that the EISA bus 127 * has now been attached. 128 */ 129 if (eisa_has_been_seen) 130 panic("eisaattach: EISA bus already seen!"); 131 eisa_has_been_seen = 1; 132} 133 134int 135eisa_maxslots(eisa_chipset_tag_t ec) 136{ 137 138 /* 139 * Always try 16 slots. 140 */ 141 return (16); 142} 143 144int 145eisa_intr_map(eisa_chipset_tag_t ec, u_int irq, 146 eisa_intr_handle_t *ihp) 147{ 148 if (irq >= NUM_LEGACY_IRQS) { 149 aprint_error("eisa_intr_map: bad IRQ %d\n", irq); 150 *ihp = -1; 151 return 1; 152 } 153 if (irq == 2) { 154 aprint_verbose("eisa_intr_map: changed IRQ 2 to IRQ 9\n"); 155 irq = 9; 156 } 157 158#if NIOAPIC > 0 159 if (mp_busses != NULL) { 160 if (intr_find_mpmapping(mp_eisa_bus, irq, ihp) == 0 || 161 intr_find_mpmapping(mp_isa_bus, irq, ihp) == 0) { 162 *ihp |= irq; 163 return 0; 164 } else 165 aprint_verbose("eisa_intr_map: no MP mapping found\n"); 166 } 167#endif 168 169 *ihp = irq; 170 return 0; 171} 172 173const char * 174eisa_intr_string(eisa_chipset_tag_t ec, eisa_intr_handle_t ih) 175{ 176 static char irqstr[8]; /* 4 + 2 + NULL + sanity */ 177 178 if (ih == 0 || (ih & 0xff) >= NUM_LEGACY_IRQS || ih == 2) 179 panic("eisa_intr_string: bogus handle 0x%x", ih); 180 181#if NIOAPIC > 0 182 if (ih & APIC_INT_VIA_APIC) 183 snprintf(irqstr, sizeof(irqstr), "apic %d int %d (irq %d)", 184 APIC_IRQ_APIC(ih), 185 APIC_IRQ_PIN(ih), 186 ih&0xff); 187 else 188 snprintf(irqstr, sizeof(irqstr), "irq %d", ih&0xff); 189#else 190 snprintf(irqstr, sizeof(irqstr), "irq %d", ih); 191#endif 192 return (irqstr); 193 194} 195 196const struct evcnt * 197eisa_intr_evcnt(eisa_chipset_tag_t ec, eisa_intr_handle_t ih) 198{ 199 200 /* XXX for now, no evcnt parent reported */ 201 return NULL; 202} 203 204void * 205eisa_intr_establish(eisa_chipset_tag_t ec, eisa_intr_handle_t ih, 206 int type, int level, int (*func)(void *), void *arg) 207{ 208 int pin, irq; 209 struct pic *pic; 210 211 pic = &i8259_pic; 212 pin = irq = ih; 213 214#if NIOAPIC > 0 215 if (ih & APIC_INT_VIA_APIC) { 216 pic = (struct pic *)ioapic_find(APIC_IRQ_APIC(ih)); 217 if (pic == NULL) { 218 aprint_error("eisa_intr_establish: bad ioapic %d\n", 219 APIC_IRQ_APIC(ih)); 220 return NULL; 221 } 222 pin = APIC_IRQ_PIN(ih); 223 irq = APIC_IRQ_LEGACY_IRQ(ih); 224 if (irq < 0 || irq >= NUM_LEGACY_IRQS) 225 irq = -1; 226 } 227#endif 228 229 return intr_establish(irq, pic, pin, type, level, func, arg); 230} 231 232void 233eisa_intr_disestablish(eisa_chipset_tag_t ec, void *cookie) 234{ 235 236 intr_disestablish(cookie); 237} 238 239int 240eisa_mem_alloc(bus_space_tag_t t, bus_size_t size, bus_size_t align, 241 bus_addr_t boundary, int cacheable, 242 bus_addr_t *addrp, bus_space_handle_t *bahp) 243{ 244 extern struct extent *iomem_ex; 245 246 /* 247 * Allocate physical address space after the ISA hole. 248 */ 249 return bus_space_alloc(t, IOM_END, iomem_ex->ex_end, size, align, 250 boundary, cacheable, addrp, bahp); 251} 252 253void 254eisa_mem_free(bus_space_tag_t t, bus_space_handle_t bah, bus_size_t size) 255{ 256 257 bus_space_free(t, bah, size); 258} 259 260int 261eisa_conf_read_mem(eisa_chipset_tag_t ec, int slot, 262 int func, int entry, struct eisa_cfg_mem *ecm) 263{ 264 265 /* XXX XXX XXX */ 266 return (ENOENT); 267} 268 269int 270eisa_conf_read_irq(eisa_chipset_tag_t ec, int slot, 271 int func, int entry, struct eisa_cfg_irq *eci) 272{ 273 274 /* XXX XXX XXX */ 275 return (ENOENT); 276} 277 278int 279eisa_conf_read_dma(eisa_chipset_tag_t ec, int slot, 280 int func, int entry, struct eisa_cfg_dma *ecd) 281{ 282 283 /* XXX XXX XXX */ 284 return (ENOENT); 285} 286 287int 288eisa_conf_read_io(eisa_chipset_tag_t ec, int slot, 289 int func, int entry, struct eisa_cfg_io *ecio) 290{ 291 292 /* XXX XXX XXX */ 293 return (ENOENT); 294} 295