isa.c revision 131534
1306196Sjkim/*- 2238405Sjkim * Copyright (c) 1998 Doug Rabson 3238405Sjkim * All rights reserved. 4238405Sjkim * 5238405Sjkim * Redistribution and use in source and binary forms, with or without 6238405Sjkim * modification, are permitted provided that the following conditions 7238405Sjkim * are met: 8238405Sjkim * 1. Redistributions of source code must retain the above copyright 9238405Sjkim * notice, this list of conditions and the following disclaimer. 10238405Sjkim * 2. Redistributions in binary form must reproduce the above copyright 11238405Sjkim * notice, this list of conditions and the following disclaimer in the 12238405Sjkim * documentation and/or other materials provided with the distribution. 13238405Sjkim * 14238405Sjkim * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15238405Sjkim * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16238405Sjkim * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17238405Sjkim * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18238405Sjkim * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19238405Sjkim * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20238405Sjkim * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21238405Sjkim * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22238405Sjkim * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23238405Sjkim * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24238405Sjkim * SUCH DAMAGE. 25238405Sjkim */ 26238405Sjkim 27238405Sjkim#include <sys/cdefs.h> 28238405Sjkim__FBSDID("$FreeBSD: head/sys/i386/isa/isa.c 131534 2004-07-03 20:11:49Z imp $"); 29238405Sjkim 30238405Sjkim/* 31238405Sjkim * Modifications for Intel architecture by Garrett A. Wollman. 32238405Sjkim * Copyright 1998 Massachusetts Institute of Technology 33238405Sjkim * 34238405Sjkim * Permission to use, copy, modify, and distribute this software and 35238405Sjkim * its documentation for any purpose and without fee is hereby 36238405Sjkim * granted, provided that both the above copyright notice and this 37238405Sjkim * permission notice appear in all copies, that both the above 38238405Sjkim * copyright notice and this permission notice appear in all 39238405Sjkim * supporting documentation, and that the name of M.I.T. not be used 40238405Sjkim * in advertising or publicity pertaining to distribution of the 41276864Sjkim * software without specific, written prior permission. M.I.T. makes 42276864Sjkim * no representations about the suitability of this software for any 43238405Sjkim * purpose. It is provided "as is" without express or implied 44238405Sjkim * warranty. 45238405Sjkim * 46238405Sjkim * THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS 47238405Sjkim * ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE, 48238405Sjkim * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 49238405Sjkim * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT 50238405Sjkim * SHALL M.I.T. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 51238405Sjkim * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 52238405Sjkim * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 53276864Sjkim * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 54276864Sjkim * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 55276864Sjkim * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 56238405Sjkim * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 57276864Sjkim * SUCH DAMAGE. 58276864Sjkim */ 59276864Sjkim 60276864Sjkim#ifdef PC98 61276864Sjkim#define __RMAN_RESOURCE_VISIBLE 62276864Sjkim#endif 63238405Sjkim#include <sys/param.h> 64276864Sjkim#include <sys/bus.h> 65276864Sjkim#include <sys/malloc.h> 66276864Sjkim#include <machine/bus.h> 67276864Sjkim#include <sys/rman.h> 68276864Sjkim#ifdef PC98 69238405Sjkim#include <sys/systm.h> 70276864Sjkim#endif 71238405Sjkim 72238405Sjkim#include <machine/resource.h> 73238405Sjkim 74238405Sjkim#include <isa/isavar.h> 75238405Sjkim#include <isa/isa_common.h> 76238405Sjkim 77238405Sjkimvoid 78238405Sjkimisa_init(device_t dev) 79238405Sjkim{ 80238405Sjkim} 81238405Sjkim 82238405Sjkim/* 83238405Sjkim * This implementation simply passes the request up to the parent 84238405Sjkim * bus, which in our case is the special i386 nexus, substituting any 85238405Sjkim * configured values if the caller defaulted. We can get away with 86238405Sjkim * this because there is no special mapping for ISA resources on an Intel 87238405Sjkim * platform. When porting this code to another architecture, it may be 88238405Sjkim * necessary to interpose a mapping layer here. 89238405Sjkim */ 90238405Sjkimstruct resource * 91238405Sjkimisa_alloc_resource(device_t bus, device_t child, int type, int *rid, 92238405Sjkim u_long start, u_long end, u_long count, u_int flags) 93238405Sjkim{ 94238405Sjkim /* 95238405Sjkim * Consider adding a resource definition. 96238405Sjkim */ 97238405Sjkim int passthrough = (device_get_parent(child) != bus); 98238405Sjkim int isdefault = (start == 0UL && end == ~0UL); 99238405Sjkim struct isa_device* idev = DEVTOISA(child); 100238405Sjkim struct resource_list *rl = &idev->id_resources; 101238405Sjkim struct resource_list_entry *rle; 102238405Sjkim 103238405Sjkim if (!passthrough && !isdefault) { 104238405Sjkim rle = resource_list_find(rl, type, *rid); 105238405Sjkim if (!rle) { 106238405Sjkim if (*rid < 0) 107238405Sjkim return 0; 108238405Sjkim switch (type) { 109238405Sjkim case SYS_RES_IRQ: 110238405Sjkim if (*rid >= ISA_NIRQ) 111238405Sjkim return 0; 112238405Sjkim break; 113238405Sjkim case SYS_RES_DRQ: 114238405Sjkim if (*rid >= ISA_NDRQ) 115238405Sjkim return 0; 116238405Sjkim break; 117238405Sjkim case SYS_RES_MEMORY: 118238405Sjkim if (*rid >= ISA_NMEM) 119238405Sjkim return 0; 120238405Sjkim break; 121238405Sjkim case SYS_RES_IOPORT: 122238405Sjkim if (*rid >= ISA_NPORT) 123238405Sjkim return 0; 124238405Sjkim break; 125238405Sjkim default: 126238405Sjkim return 0; 127238405Sjkim } 128238405Sjkim resource_list_add(rl, type, *rid, start, end, count); 129238405Sjkim } 130238405Sjkim } 131238405Sjkim 132238405Sjkim return resource_list_alloc(rl, bus, child, type, rid, 133238405Sjkim start, end, count, flags); 134238405Sjkim} 135238405Sjkim 136306196Sjkim#ifdef PC98 137238405Sjkim/* 138238405Sjkim * Indirection support. The type of bus_space_handle_t is 139238405Sjkim * defined in sys/i386/include/bus_pc98.h. 140238405Sjkim */ 141238405Sjkimstruct resource * 142238405Sjkimisa_alloc_resourcev(device_t child, int type, int *rid, 143238405Sjkim bus_addr_t *res, bus_size_t count, u_int flags) 144238405Sjkim{ 145238405Sjkim struct isa_device* idev = DEVTOISA(child); 146238405Sjkim struct resource_list *rl = &idev->id_resources; 147238405Sjkim 148238405Sjkim device_t bus = device_get_parent(child); 149238405Sjkim bus_addr_t start; 150238405Sjkim bus_space_handle_t bh; 151238405Sjkim struct resource *re; 152238405Sjkim struct resource **bsre; 153238405Sjkim int i, j, k, linear_cnt, ressz, bsrid; 154238405Sjkim 155238405Sjkim start = bus_get_resource_start(child, type, *rid); 156238405Sjkim 157238405Sjkim linear_cnt = count; 158238405Sjkim ressz = 1; 159238405Sjkim for (i = 1; i < count; ++i) { 160238405Sjkim if (res[i] != res[i - 1] + 1) { 161238405Sjkim if (i < linear_cnt) 162238405Sjkim linear_cnt = i; 163238405Sjkim ++ressz; 164238405Sjkim } 165276864Sjkim } 166238405Sjkim 167238405Sjkim re = isa_alloc_resource(bus, child, type, rid, 168238405Sjkim start + res[0], start + res[linear_cnt - 1], 169238405Sjkim linear_cnt, flags); 170238405Sjkim if (re == NULL) 171238405Sjkim return NULL; 172238405Sjkim 173238405Sjkim bsre = malloc(sizeof (struct resource *) * ressz, M_DEVBUF, M_NOWAIT); 174238405Sjkim if (bsre == NULL) { 175238405Sjkim resource_list_release(rl, bus, child, type, *rid, re); 176238405Sjkim return NULL; 177238405Sjkim } 178238405Sjkim bsre[0] = re; 179238405Sjkim 180238405Sjkim for (i = linear_cnt, k = 1; i < count; i = j, k++) { 181238405Sjkim for (j = i + 1; j < count; j++) { 182238405Sjkim if (res[j] != res[j - 1] + 1) 183238405Sjkim break; 184238405Sjkim } 185238405Sjkim bsrid = *rid + k; 186238405Sjkim bsre[k] = isa_alloc_resource(bus, child, type, &bsrid, 187238405Sjkim start + res[i], start + res[j - 1], j - i, flags); 188238405Sjkim if (bsre[k] == NULL) { 189238405Sjkim for (k--; k >= 0; k--) 190238405Sjkim resource_list_release(rl, bus, child, type, 191238405Sjkim *rid + k, bsre[k]); 192238405Sjkim free(bsre, M_DEVBUF); 193238405Sjkim return NULL; 194238405Sjkim } 195238405Sjkim } 196238405Sjkim 197238405Sjkim bh = rman_get_bushandle(re); 198238405Sjkim bh->bsh_res = bsre; 199 bh->bsh_ressz = ressz; 200 201 return re; 202} 203 204int 205isa_load_resourcev(struct resource *re, bus_addr_t *res, bus_size_t count) 206{ 207 bus_addr_t start; 208 bus_space_handle_t bh; 209 int i; 210 211 bh = rman_get_bushandle(re); 212 if (count > bh->bsh_maxiatsz) { 213 printf("isa_load_resourcev: map size too large\n"); 214 return EINVAL; 215 } 216 217 start = rman_get_start(re); 218 for (i = 0; i < bh->bsh_maxiatsz; i++) { 219 if (i < count) 220 bh->bsh_iat[i] = start + res[i]; 221 else 222 bh->bsh_iat[i] = start; 223 } 224 225 bh->bsh_iatsz = count; 226 bh->bsh_bam = rman_get_bustag(re)->bs_ra; /* relocate access */ 227 228 return 0; 229} 230#endif /* PC98 */ 231 232int 233isa_release_resource(device_t bus, device_t child, int type, int rid, 234 struct resource *r) 235{ 236 struct isa_device* idev = DEVTOISA(child); 237 struct resource_list *rl = &idev->id_resources; 238#ifdef PC98 239 /* 240 * Indirection support. The type of bus_space_handle_t is 241 * defined in sys/i386/include/bus_pc98.h. 242 */ 243 int i; 244 bus_space_handle_t bh; 245 246 if (type == SYS_RES_MEMORY || type == SYS_RES_IOPORT) { 247 bh = rman_get_bushandle(r); 248 for (i = 1; i < bh->bsh_ressz; i++) 249 resource_list_release(rl, bus, child, type, rid + i, 250 bh->bsh_res[i]); 251 if (bh->bsh_res != NULL) 252 free(bh->bsh_res, M_DEVBUF); 253 } 254#endif 255 return resource_list_release(rl, bus, child, type, rid, r); 256} 257 258/* 259 * We can't use the bus_generic_* versions of these methods because those 260 * methods always pass the bus param as the requesting device, and we need 261 * to pass the child (the i386 nexus knows about this and is prepared to 262 * deal). 263 */ 264int 265isa_setup_intr(device_t bus, device_t child, struct resource *r, int flags, 266 void (*ihand)(void *), void *arg, void **cookiep) 267{ 268 return (BUS_SETUP_INTR(device_get_parent(bus), child, r, flags, 269 ihand, arg, cookiep)); 270} 271 272int 273isa_teardown_intr(device_t bus, device_t child, struct resource *r, 274 void *cookie) 275{ 276 return (BUS_TEARDOWN_INTR(device_get_parent(bus), child, r, cookie)); 277} 278