2 * Copyright (c) 1998 Doug Rabson
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * $FreeBSD: src/sys/i386/isa/isa.c,v 1.132.2.5 2002/03/03 05:42:50 nyan Exp $
27 * $DragonFly: src/sys/bus/isa/i386/isa.c,v 1.5 2004/04/07 05:54:35 dillon Exp $
31 * Modifications for Intel architecture by Garrett A. Wollman.
32 * Copyright 1998 Massachusetts Institute of Technology
34 * Permission to use, copy, modify, and distribute this software and
35 * its documentation for any purpose and without fee is hereby
36 * granted, provided that both the above copyright notice and this
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39 * supporting documentation, and that the name of M.I.T. not be used
40 * in advertising or publicity pertaining to distribution of the
41 * software without specific, written prior permission. M.I.T. makes
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43 * purpose. It is provided "as is" without express or implied
46 * THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS
47 * ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE,
48 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
49 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
50 * SHALL M.I.T. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
51 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
52 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
53 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
54 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
55 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
56 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
60 #include <sys/param.h>
62 #include <sys/malloc.h>
63 #include <machine/bus.h>
66 #include <machine/resource.h>
68 #include "../isavar.h"
69 #include "../isa_common.h"
71 #include "opt_compat_oldisa.h"
77 isa_wrap_old_drivers();
82 * This implementation simply passes the request up to the parent
83 * bus, which in our case is the special i386 nexus, substituting any
84 * configured values if the caller defaulted. We can get away with
85 * this because there is no special mapping for ISA resources on an Intel
86 * platform. When porting this code to another architecture, it may be
87 * necessary to interpose a mapping layer here.
90 isa_alloc_resource(device_t bus, device_t child, int type, int *rid,
91 u_long start, u_long end, u_long count, u_int flags)
94 * Consider adding a resource definition. We allow rid 0-1 for
95 * irq and drq, 0-3 for memory and 0-7 for ports which is
96 * sufficient for isapnp.
98 int passthrough = (device_get_parent(child) != bus);
99 int isdefault = (start == 0UL && end == ~0UL);
100 struct isa_device* idev = DEVTOISA(child);
101 struct resource_list *rl = &idev->id_resources;
102 struct resource_list_entry *rle;
104 if (!passthrough && !isdefault) {
105 rle = resource_list_find(rl, type, *rid);
111 if (*rid >= ISA_NIRQ)
115 if (*rid >= ISA_NDRQ)
119 if (*rid >= ISA_NMEM)
123 if (*rid >= ISA_NPORT)
129 resource_list_add(rl, type, *rid, start, end, count);
133 return resource_list_alloc(rl, bus, child, type, rid,
134 start, end, count, flags);
139 * Indirection support. The type of bus_space_handle_t is
140 * defined in sys/i386/include/bus_pc98.h.
143 isa_alloc_resourcev(device_t child, int type, int *rid,
144 bus_addr_t *res, bus_size_t count, u_int flags)
146 struct isa_device* idev = DEVTOISA(child);
147 struct resource_list *rl = &idev->id_resources;
149 device_t bus = device_get_parent(child);
152 struct resource **bsre;
153 int i, j, k, linear_cnt, ressz, bsrid;
155 start = bus_get_resource_start(child, type, *rid);
159 for (i = 1; i < count; ++i) {
160 if (res[i] != res[i - 1] + 1) {
167 re = isa_alloc_resource(bus, child, type, rid,
168 start + res[0], start + res[linear_cnt - 1],
173 bsre = malloc(sizeof(struct resource *) * ressz, M_DEVBUF, M_INTWAIT);
176 for (i = linear_cnt, k = 1; i < count; i = j, k++) {
177 for (j = i + 1; j < count; j++) {
178 if (res[j] != res[j - 1] + 1)
182 bsre[k] = isa_alloc_resource(bus, child, type, &bsrid,
183 start + res[i], start + res[j - 1], j - i, flags);
184 if (bsre[k] == NULL) {
185 for (k--; k >= 0; k--)
186 resource_list_release(rl, bus, child, type,
188 free(bsre, M_DEVBUF);
193 re->r_bushandle->bsh_res = bsre;
194 re->r_bushandle->bsh_ressz = ressz;
200 isa_load_resourcev(struct resource *re, bus_addr_t *res, bus_size_t count)
205 if (count > re->r_bushandle->bsh_maxiatsz) {
206 printf("isa_load_resourcev: map size too large\n");
210 start = rman_get_start(re);
211 for (i = 0; i < re->r_bushandle->bsh_maxiatsz; i++) {
213 re->r_bushandle->bsh_iat[i] = start + res[i];
215 re->r_bushandle->bsh_iat[i] = start;
218 re->r_bushandle->bsh_iatsz = count;
219 re->r_bushandle->bsh_bam = re->r_bustag->bs_ra; /* relocate access */
226 isa_release_resource(device_t bus, device_t child, int type, int rid,
229 struct isa_device* idev = DEVTOISA(child);
230 struct resource_list *rl = &idev->id_resources;
233 * Indirection support. The type of bus_space_handle_t is
234 * defined in sys/i386/include/bus_pc98.h.
238 if (type == SYS_RES_MEMORY || type == SYS_RES_IOPORT) {
239 for (i = 1; i < r->r_bushandle->bsh_ressz; i++)
240 resource_list_release(rl, bus, child, type, rid + i,
241 r->r_bushandle->bsh_res[i]);
242 if (r->r_bushandle->bsh_res != NULL)
243 free(r->r_bushandle->bsh_res, M_DEVBUF);
246 return resource_list_release(rl, bus, child, type, rid, r);
250 * We can't use the bus_generic_* versions of these methods because those
251 * methods always pass the bus param as the requesting device, and we need
252 * to pass the child (the i386 nexus knows about this and is prepared to
256 isa_setup_intr(device_t bus, device_t child, struct resource *r, int flags,
257 void (*ihand)(void *), void *arg, void **cookiep)
259 return (BUS_SETUP_INTR(device_get_parent(bus), child, r, flags,
260 ihand, arg, cookiep));
264 isa_teardown_intr(device_t bus, device_t child, struct resource *r,
267 return (BUS_TEARDOWN_INTR(device_get_parent(bus), child, r, cookie));