isa.c revision 139279
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: head/sys/i386/isa/isa.c 139279 2004-12-24 23:03:17Z imp $"); 29115703Sobrien 304Srgrimes/* 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 60131405Snyan#ifdef PC98 61131405Snyan#define __RMAN_RESOURCE_VISIBLE 62131405Snyan#endif 632056Swollman#include <sys/param.h> 6445720Speter#include <sys/bus.h> 65139279Simp#include <sys/kernel.h> 662056Swollman#include <sys/malloc.h> 67139279Simp#include <sys/module.h> 6845720Speter#include <machine/bus.h> 6958762Skato#include <sys/rman.h> 7090466Snyan#ifdef PC98 7190466Snyan#include <sys/systm.h> 7290466Snyan#endif 734Srgrimes 7445720Speter#include <machine/resource.h> 7526157Sse 7645720Speter#include <isa/isavar.h> 7747398Sdfr#include <isa/isa_common.h> 7829613Sjmg 7947398Sdfrvoid 8088376Stmmisa_init(device_t dev) 8131457Sjmg{ 823258Sdg} 838876Srgrimes 8447178Sdfr/* 8545720Speter * This implementation simply passes the request up to the parent 8645720Speter * bus, which in our case is the special i386 nexus, substituting any 8745720Speter * configured values if the caller defaulted. We can get away with 8845720Speter * this because there is no special mapping for ISA resources on an Intel 8945720Speter * platform. When porting this code to another architecture, it may be 9045720Speter * necessary to interpose a mapping layer here. 9115147Ssmpatel */ 9247398Sdfrstruct resource * 9345720Speterisa_alloc_resource(device_t bus, device_t child, int type, int *rid, 9445720Speter u_long start, u_long end, u_long count, u_int flags) 9515147Ssmpatel{ 9645720Speter /* 97127139Sjmg * Consider adding a resource definition. 9845720Speter */ 9947398Sdfr int passthrough = (device_get_parent(child) != bus); 10047398Sdfr int isdefault = (start == 0UL && end == ~0UL); 10152174Sdfr struct isa_device* idev = DEVTOISA(child); 10252174Sdfr struct resource_list *rl = &idev->id_resources; 10347398Sdfr struct resource_list_entry *rle; 10447398Sdfr 10547398Sdfr if (!passthrough && !isdefault) { 10647398Sdfr rle = resource_list_find(rl, type, *rid); 10747398Sdfr if (!rle) { 10847398Sdfr if (*rid < 0) 10947398Sdfr return 0; 11052174Sdfr switch (type) { 11152174Sdfr case SYS_RES_IRQ: 11252174Sdfr if (*rid >= ISA_NIRQ) 11352174Sdfr return 0; 11452174Sdfr break; 11552174Sdfr case SYS_RES_DRQ: 11652174Sdfr if (*rid >= ISA_NDRQ) 11752174Sdfr return 0; 11852174Sdfr break; 11952174Sdfr case SYS_RES_MEMORY: 12052174Sdfr if (*rid >= ISA_NMEM) 12152174Sdfr return 0; 12252174Sdfr break; 12352174Sdfr case SYS_RES_IOPORT: 12452174Sdfr if (*rid >= ISA_NPORT) 12552174Sdfr return 0; 12652174Sdfr break; 12752174Sdfr default: 12847398Sdfr return 0; 12952174Sdfr } 13047398Sdfr resource_list_add(rl, type, *rid, start, end, count); 13145720Speter } 13245720Speter } 13347398Sdfr 13452174Sdfr return resource_list_alloc(rl, bus, child, type, rid, 13547398Sdfr start, end, count, flags); 13645720Speter} 13715147Ssmpatel 13858762Skato#ifdef PC98 13958762Skato/* 14058762Skato * Indirection support. The type of bus_space_handle_t is 14158762Skato * defined in sys/i386/include/bus_pc98.h. 14258762Skato */ 14358762Skatostruct resource * 14458762Skatoisa_alloc_resourcev(device_t child, int type, int *rid, 14558762Skato bus_addr_t *res, bus_size_t count, u_int flags) 14658762Skato{ 14758762Skato struct isa_device* idev = DEVTOISA(child); 14858762Skato struct resource_list *rl = &idev->id_resources; 14958762Skato 15058762Skato device_t bus = device_get_parent(child); 15178391Snyan bus_addr_t start; 152131534Simp bus_space_handle_t bh; 15358762Skato struct resource *re; 15458762Skato struct resource **bsre; 15558762Skato int i, j, k, linear_cnt, ressz, bsrid; 15658762Skato 15778391Snyan start = bus_get_resource_start(child, type, *rid); 15858762Skato 15958762Skato linear_cnt = count; 16058762Skato ressz = 1; 16158762Skato for (i = 1; i < count; ++i) { 16265570Snyan if (res[i] != res[i - 1] + 1) { 16358762Skato if (i < linear_cnt) 16458762Skato linear_cnt = i; 16558762Skato ++ressz; 16658762Skato } 16758762Skato } 16858762Skato 16978391Snyan re = isa_alloc_resource(bus, child, type, rid, 17078391Snyan start + res[0], start + res[linear_cnt - 1], 17178391Snyan linear_cnt, flags); 17258762Skato if (re == NULL) 17358762Skato return NULL; 17458762Skato 17558762Skato bsre = malloc(sizeof (struct resource *) * ressz, M_DEVBUF, M_NOWAIT); 17658762Skato if (bsre == NULL) { 17758762Skato resource_list_release(rl, bus, child, type, *rid, re); 17858762Skato return NULL; 17958762Skato } 18058762Skato bsre[0] = re; 18158762Skato 18258762Skato for (i = linear_cnt, k = 1; i < count; i = j, k++) { 18358762Skato for (j = i + 1; j < count; j++) { 18465570Snyan if (res[j] != res[j - 1] + 1) 18558762Skato break; 18658762Skato } 18758762Skato bsrid = *rid + k; 18858762Skato bsre[k] = isa_alloc_resource(bus, child, type, &bsrid, 18978391Snyan start + res[i], start + res[j - 1], j - i, flags); 19058762Skato if (bsre[k] == NULL) { 19158762Skato for (k--; k >= 0; k--) 19258762Skato resource_list_release(rl, bus, child, type, 19358762Skato *rid + k, bsre[k]); 19458762Skato free(bsre, M_DEVBUF); 19558762Skato return NULL; 19658762Skato } 19758762Skato } 19858762Skato 199131534Simp bh = rman_get_bushandle(re); 200131534Simp bh->bsh_res = bsre; 201131534Simp bh->bsh_ressz = ressz; 20258762Skato 20358762Skato return re; 20458762Skato} 20558762Skato 20647398Sdfrint 20758762Skatoisa_load_resourcev(struct resource *re, bus_addr_t *res, bus_size_t count) 20858762Skato{ 20984615Snyan bus_addr_t start; 210131534Simp bus_space_handle_t bh; 21158762Skato int i; 21258762Skato 213131534Simp bh = rman_get_bushandle(re); 214131534Simp if (count > bh->bsh_maxiatsz) { 21584615Snyan printf("isa_load_resourcev: map size too large\n"); 21684615Snyan return EINVAL; 21784615Snyan } 21858762Skato 21984615Snyan start = rman_get_start(re); 220131534Simp for (i = 0; i < bh->bsh_maxiatsz; i++) { 22184615Snyan if (i < count) 222131534Simp bh->bsh_iat[i] = start + res[i]; 22384615Snyan else 224131534Simp bh->bsh_iat[i] = start; 22584615Snyan } 22658762Skato 227131534Simp bh->bsh_iatsz = count; 228131534Simp bh->bsh_bam = rman_get_bustag(re)->bs_ra; /* relocate access */ 22958762Skato 23058762Skato return 0; 23158762Skato} 23258762Skato#endif /* PC98 */ 23358762Skato 23458762Skatoint 23545720Speterisa_release_resource(device_t bus, device_t child, int type, int rid, 23645720Speter struct resource *r) 23745720Speter{ 23852174Sdfr struct isa_device* idev = DEVTOISA(child); 23952174Sdfr struct resource_list *rl = &idev->id_resources; 24058762Skato#ifdef PC98 24158762Skato /* 24258762Skato * Indirection support. The type of bus_space_handle_t is 24358762Skato * defined in sys/i386/include/bus_pc98.h. 24458762Skato */ 24558762Skato int i; 246131534Simp bus_space_handle_t bh; 24758762Skato 24890762Snyan if (type == SYS_RES_MEMORY || type == SYS_RES_IOPORT) { 249131534Simp bh = rman_get_bushandle(r); 250131534Simp for (i = 1; i < bh->bsh_ressz; i++) 25190762Snyan resource_list_release(rl, bus, child, type, rid + i, 252131534Simp bh->bsh_res[i]); 253131534Simp if (bh->bsh_res != NULL) 254131534Simp free(bh->bsh_res, M_DEVBUF); 25590762Snyan } 25658762Skato#endif 25752174Sdfr return resource_list_release(rl, bus, child, type, rid, r); 2584Srgrimes} 2594Srgrimes 2604Srgrimes/* 26145720Speter * We can't use the bus_generic_* versions of these methods because those 26245720Speter * methods always pass the bus param as the requesting device, and we need 26345720Speter * to pass the child (the i386 nexus knows about this and is prepared to 26445720Speter * deal). 2654Srgrimes */ 26647398Sdfrint 26746743Sdfrisa_setup_intr(device_t bus, device_t child, struct resource *r, int flags, 26845720Speter void (*ihand)(void *), void *arg, void **cookiep) 26931457Sjmg{ 27046743Sdfr return (BUS_SETUP_INTR(device_get_parent(bus), child, r, flags, 27146743Sdfr ihand, arg, cookiep)); 2724Srgrimes} 2734Srgrimes 27447398Sdfrint 27545720Speterisa_teardown_intr(device_t bus, device_t child, struct resource *r, 27645720Speter void *cookie) 27727639Smsmith{ 27845720Speter return (BUS_TEARDOWN_INTR(device_get_parent(bus), child, r, cookie)); 27927639Smsmith} 280139279Simp 281139279Simp/* 282139279Simp * On this platform, isa can also attach to the legacy bus. 283139279Simp */ 284139279SimpDRIVER_MODULE(isa, legacy, isa_driver, isa_devclass, 0, 0); 285