14Srgrimes/*- 245720Speter * Copyright (c) 1998 Doug Rabson 34Srgrimes * All rights reserved. 44Srgrimes * 54Srgrimes * Redistribution and use in source and binary forms, with or without 64Srgrimes * modification, are permitted provided that the following conditions 74Srgrimes * are met: 84Srgrimes * 1. Redistributions of source code must retain the above copyright 94Srgrimes * notice, this list of conditions and the following disclaimer. 104Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 114Srgrimes * notice, this list of conditions and the following disclaimer in the 124Srgrimes * documentation and/or other materials provided with the distribution. 134Srgrimes * 1445720Speter * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 154Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 164Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1745720Speter * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 184Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 194Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 204Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 214Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 224Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 234Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 244Srgrimes * SUCH DAMAGE. 254Srgrimes */ 264Srgrimes 27115703Sobrien#include <sys/cdefs.h> 28115703Sobrien__FBSDID("$FreeBSD$"); 29115703Sobrien 30139790Simp/*- 3145720Speter * Modifications for Intel architecture by Garrett A. Wollman. 3245720Speter * Copyright 1998 Massachusetts Institute of Technology 334Srgrimes * 3445720Speter * Permission to use, copy, modify, and distribute this software and 3545720Speter * its documentation for any purpose and without fee is hereby 3645720Speter * granted, provided that both the above copyright notice and this 3745720Speter * permission notice appear in all copies, that both the above 3845720Speter * copyright notice and this permission notice appear in all 3945720Speter * supporting documentation, and that the name of M.I.T. not be used 4045720Speter * in advertising or publicity pertaining to distribution of the 4145720Speter * software without specific, written prior permission. M.I.T. makes 4245720Speter * no representations about the suitability of this software for any 4345720Speter * purpose. It is provided "as is" without express or implied 4445720Speter * warranty. 4545720Speter * 4645720Speter * THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS 4745720Speter * ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE, 4845720Speter * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 4945720Speter * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT 5045720Speter * SHALL M.I.T. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 5145720Speter * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 5245720Speter * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 5345720Speter * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 5445720Speter * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 5545720Speter * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 5645720Speter * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 5745720Speter * SUCH DAMAGE. 584Srgrimes */ 594Srgrimes 602056Swollman#include <sys/param.h> 6145720Speter#include <sys/bus.h> 62139279Simp#include <sys/kernel.h> 632056Swollman#include <sys/malloc.h> 64139279Simp#include <sys/module.h> 6545720Speter#include <machine/bus.h> 6658762Skato#include <sys/rman.h> 6790466Snyan#ifdef PC98 6890466Snyan#include <sys/systm.h> 6990466Snyan#endif 704Srgrimes 7145720Speter#include <machine/resource.h> 7226157Sse 7345720Speter#include <isa/isavar.h> 7447398Sdfr#include <isa/isa_common.h> 7529613Sjmg 7647398Sdfrvoid 7788376Stmmisa_init(device_t dev) 7831457Sjmg{ 793258Sdg} 808876Srgrimes 8147178Sdfr/* 8245720Speter * This implementation simply passes the request up to the parent 8345720Speter * bus, which in our case is the special i386 nexus, substituting any 8445720Speter * configured values if the caller defaulted. We can get away with 8545720Speter * this because there is no special mapping for ISA resources on an Intel 8645720Speter * platform. When porting this code to another architecture, it may be 8745720Speter * necessary to interpose a mapping layer here. 8815147Ssmpatel */ 8947398Sdfrstruct resource * 9045720Speterisa_alloc_resource(device_t bus, device_t child, int type, int *rid, 9145720Speter u_long start, u_long end, u_long count, u_int flags) 9215147Ssmpatel{ 9345720Speter /* 94127139Sjmg * Consider adding a resource definition. 9545720Speter */ 9647398Sdfr int passthrough = (device_get_parent(child) != bus); 9747398Sdfr int isdefault = (start == 0UL && end == ~0UL); 9852174Sdfr struct isa_device* idev = DEVTOISA(child); 9952174Sdfr struct resource_list *rl = &idev->id_resources; 10047398Sdfr struct resource_list_entry *rle; 10147398Sdfr 10247398Sdfr if (!passthrough && !isdefault) { 10347398Sdfr rle = resource_list_find(rl, type, *rid); 10447398Sdfr if (!rle) { 10547398Sdfr if (*rid < 0) 10647398Sdfr return 0; 10752174Sdfr switch (type) { 10852174Sdfr case SYS_RES_IRQ: 10952174Sdfr if (*rid >= ISA_NIRQ) 11052174Sdfr return 0; 11152174Sdfr break; 11252174Sdfr case SYS_RES_DRQ: 11352174Sdfr if (*rid >= ISA_NDRQ) 11452174Sdfr return 0; 11552174Sdfr break; 11652174Sdfr case SYS_RES_MEMORY: 11752174Sdfr if (*rid >= ISA_NMEM) 11852174Sdfr return 0; 11952174Sdfr break; 12052174Sdfr case SYS_RES_IOPORT: 12152174Sdfr if (*rid >= ISA_NPORT) 12252174Sdfr return 0; 12352174Sdfr break; 12452174Sdfr default: 12547398Sdfr return 0; 12652174Sdfr } 12747398Sdfr resource_list_add(rl, type, *rid, start, end, count); 12845720Speter } 12945720Speter } 13047398Sdfr 13152174Sdfr return resource_list_alloc(rl, bus, child, type, rid, 13247398Sdfr start, end, count, flags); 13345720Speter} 13415147Ssmpatel 13558762Skato#ifdef PC98 13658762Skato/* 13758762Skato * Indirection support. The type of bus_space_handle_t is 13858762Skato * defined in sys/i386/include/bus_pc98.h. 13958762Skato */ 14058762Skatostruct resource * 14158762Skatoisa_alloc_resourcev(device_t child, int type, int *rid, 14258762Skato bus_addr_t *res, bus_size_t count, u_int flags) 14358762Skato{ 14458762Skato struct isa_device* idev = DEVTOISA(child); 14558762Skato struct resource_list *rl = &idev->id_resources; 14658762Skato 14758762Skato device_t bus = device_get_parent(child); 14878391Snyan bus_addr_t start; 149131534Simp bus_space_handle_t bh; 15058762Skato struct resource *re; 15158762Skato struct resource **bsre; 15258762Skato int i, j, k, linear_cnt, ressz, bsrid; 15358762Skato 15478391Snyan start = bus_get_resource_start(child, type, *rid); 15558762Skato 15658762Skato linear_cnt = count; 15758762Skato ressz = 1; 15858762Skato for (i = 1; i < count; ++i) { 15965570Snyan if (res[i] != res[i - 1] + 1) { 16058762Skato if (i < linear_cnt) 16158762Skato linear_cnt = i; 16258762Skato ++ressz; 16358762Skato } 16458762Skato } 16558762Skato 16678391Snyan re = isa_alloc_resource(bus, child, type, rid, 16778391Snyan start + res[0], start + res[linear_cnt - 1], 16878391Snyan linear_cnt, flags); 16958762Skato if (re == NULL) 17058762Skato return NULL; 17158762Skato 17258762Skato bsre = malloc(sizeof (struct resource *) * ressz, M_DEVBUF, M_NOWAIT); 17358762Skato if (bsre == NULL) { 17458762Skato resource_list_release(rl, bus, child, type, *rid, re); 17558762Skato return NULL; 17658762Skato } 17758762Skato bsre[0] = re; 17858762Skato 17958762Skato for (i = linear_cnt, k = 1; i < count; i = j, k++) { 18058762Skato for (j = i + 1; j < count; j++) { 18165570Snyan if (res[j] != res[j - 1] + 1) 18258762Skato break; 18358762Skato } 18458762Skato bsrid = *rid + k; 18558762Skato bsre[k] = isa_alloc_resource(bus, child, type, &bsrid, 18678391Snyan start + res[i], start + res[j - 1], j - i, flags); 18758762Skato if (bsre[k] == NULL) { 18858762Skato for (k--; k >= 0; k--) 18958762Skato resource_list_release(rl, bus, child, type, 19058762Skato *rid + k, bsre[k]); 19158762Skato free(bsre, M_DEVBUF); 19258762Skato return NULL; 19358762Skato } 19458762Skato } 19558762Skato 196131534Simp bh = rman_get_bushandle(re); 197131534Simp bh->bsh_res = bsre; 198131534Simp bh->bsh_ressz = ressz; 19958762Skato 20058762Skato return re; 20158762Skato} 20258762Skato 20347398Sdfrint 20458762Skatoisa_load_resourcev(struct resource *re, bus_addr_t *res, bus_size_t count) 20558762Skato{ 20658762Skato 207182836Snyan return bus_space_map_load(rman_get_bustag(re), rman_get_bushandle(re), 208182836Snyan count, res, 0); 20958762Skato} 21058762Skato#endif /* PC98 */ 21158762Skato 21258762Skatoint 21345720Speterisa_release_resource(device_t bus, device_t child, int type, int rid, 21445720Speter struct resource *r) 21545720Speter{ 21652174Sdfr struct isa_device* idev = DEVTOISA(child); 21752174Sdfr struct resource_list *rl = &idev->id_resources; 21858762Skato#ifdef PC98 21958762Skato /* 22058762Skato * Indirection support. The type of bus_space_handle_t is 22158762Skato * defined in sys/i386/include/bus_pc98.h. 22258762Skato */ 22358762Skato int i; 224131534Simp bus_space_handle_t bh; 22558762Skato 22690762Snyan if (type == SYS_RES_MEMORY || type == SYS_RES_IOPORT) { 227131534Simp bh = rman_get_bushandle(r); 228172032Snyan if (bh != NULL) { 229172032Snyan for (i = 1; i < bh->bsh_ressz; i++) 230172032Snyan resource_list_release(rl, bus, child, type, 231172032Snyan rid + i, bh->bsh_res[i]); 232172032Snyan if (bh->bsh_res != NULL) 233172032Snyan free(bh->bsh_res, M_DEVBUF); 234172032Snyan } 23590762Snyan } 23658762Skato#endif 23752174Sdfr return resource_list_release(rl, bus, child, type, rid, r); 2384Srgrimes} 2394Srgrimes 2404Srgrimes/* 241139279Simp * On this platform, isa can also attach to the legacy bus. 242139279Simp */ 243139279SimpDRIVER_MODULE(isa, legacy, isa_driver, isa_devclass, 0, 0); 244