isa.c revision 90762
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 * 2650477Speter * $FreeBSD: head/sys/i386/isa/isa.c 90762 2002-02-17 09:16:45Z nyan $ 274Srgrimes */ 284Srgrimes 294Srgrimes/* 3045720Speter * Modifications for Intel architecture by Garrett A. Wollman. 3145720Speter * Copyright 1998 Massachusetts Institute of Technology 324Srgrimes * 3345720Speter * Permission to use, copy, modify, and distribute this software and 3445720Speter * its documentation for any purpose and without fee is hereby 3545720Speter * granted, provided that both the above copyright notice and this 3645720Speter * permission notice appear in all copies, that both the above 3745720Speter * copyright notice and this permission notice appear in all 3845720Speter * supporting documentation, and that the name of M.I.T. not be used 3945720Speter * in advertising or publicity pertaining to distribution of the 4045720Speter * software without specific, written prior permission. M.I.T. makes 4145720Speter * no representations about the suitability of this software for any 4245720Speter * purpose. It is provided "as is" without express or implied 4345720Speter * warranty. 4445720Speter * 4545720Speter * THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS 4645720Speter * ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE, 4745720Speter * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 4845720Speter * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT 4945720Speter * SHALL M.I.T. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 5045720Speter * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 5145720Speter * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 5245720Speter * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 5345720Speter * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 5445720Speter * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 5545720Speter * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 5645720Speter * SUCH DAMAGE. 574Srgrimes */ 584Srgrimes 592056Swollman#include <sys/param.h> 6045720Speter#include <sys/bus.h> 612056Swollman#include <sys/malloc.h> 6245720Speter#include <machine/bus.h> 6358762Skato#include <sys/rman.h> 6490466Snyan#ifdef PC98 6590466Snyan#include <sys/systm.h> 6690466Snyan#endif 674Srgrimes 6845720Speter#include <machine/resource.h> 6926157Sse 7045720Speter#include <isa/isavar.h> 7147398Sdfr#include <isa/isa_common.h> 7229613Sjmg 7347398Sdfrvoid 7488376Stmmisa_init(device_t dev) 7531457Sjmg{ 763258Sdg} 778876Srgrimes 7847178Sdfr/* 7945720Speter * This implementation simply passes the request up to the parent 8045720Speter * bus, which in our case is the special i386 nexus, substituting any 8145720Speter * configured values if the caller defaulted. We can get away with 8245720Speter * this because there is no special mapping for ISA resources on an Intel 8345720Speter * platform. When porting this code to another architecture, it may be 8445720Speter * necessary to interpose a mapping layer here. 8515147Ssmpatel */ 8647398Sdfrstruct resource * 8745720Speterisa_alloc_resource(device_t bus, device_t child, int type, int *rid, 8845720Speter u_long start, u_long end, u_long count, u_int flags) 8915147Ssmpatel{ 9045720Speter /* 9147398Sdfr * Consider adding a resource definition. We allow rid 0-1 for 9247616Sdfr * irq and drq, 0-3 for memory and 0-7 for ports which is 9347616Sdfr * sufficient for isapnp. 9445720Speter */ 9547398Sdfr int passthrough = (device_get_parent(child) != bus); 9647398Sdfr int isdefault = (start == 0UL && end == ~0UL); 9752174Sdfr struct isa_device* idev = DEVTOISA(child); 9852174Sdfr struct resource_list *rl = &idev->id_resources; 9947398Sdfr struct resource_list_entry *rle; 10047398Sdfr 10147398Sdfr if (!passthrough && !isdefault) { 10247398Sdfr rle = resource_list_find(rl, type, *rid); 10347398Sdfr if (!rle) { 10447398Sdfr if (*rid < 0) 10547398Sdfr return 0; 10652174Sdfr switch (type) { 10752174Sdfr case SYS_RES_IRQ: 10852174Sdfr if (*rid >= ISA_NIRQ) 10952174Sdfr return 0; 11052174Sdfr break; 11152174Sdfr case SYS_RES_DRQ: 11252174Sdfr if (*rid >= ISA_NDRQ) 11352174Sdfr return 0; 11452174Sdfr break; 11552174Sdfr case SYS_RES_MEMORY: 11652174Sdfr if (*rid >= ISA_NMEM) 11752174Sdfr return 0; 11852174Sdfr break; 11952174Sdfr case SYS_RES_IOPORT: 12052174Sdfr if (*rid >= ISA_NPORT) 12152174Sdfr return 0; 12252174Sdfr break; 12352174Sdfr default: 12447398Sdfr return 0; 12552174Sdfr } 12647398Sdfr resource_list_add(rl, type, *rid, start, end, count); 12745720Speter } 12845720Speter } 12947398Sdfr 13052174Sdfr return resource_list_alloc(rl, bus, child, type, rid, 13147398Sdfr start, end, count, flags); 13245720Speter} 13315147Ssmpatel 13458762Skato#ifdef PC98 13558762Skato/* 13658762Skato * Indirection support. The type of bus_space_handle_t is 13758762Skato * defined in sys/i386/include/bus_pc98.h. 13858762Skato */ 13958762Skatostruct resource * 14058762Skatoisa_alloc_resourcev(device_t child, int type, int *rid, 14158762Skato bus_addr_t *res, bus_size_t count, u_int flags) 14258762Skato{ 14358762Skato struct isa_device* idev = DEVTOISA(child); 14458762Skato struct resource_list *rl = &idev->id_resources; 14558762Skato 14658762Skato device_t bus = device_get_parent(child); 14778391Snyan bus_addr_t start; 14858762Skato struct resource *re; 14958762Skato struct resource **bsre; 15058762Skato int i, j, k, linear_cnt, ressz, bsrid; 15158762Skato 15278391Snyan start = bus_get_resource_start(child, type, *rid); 15358762Skato 15458762Skato linear_cnt = count; 15558762Skato ressz = 1; 15658762Skato for (i = 1; i < count; ++i) { 15765570Snyan if (res[i] != res[i - 1] + 1) { 15858762Skato if (i < linear_cnt) 15958762Skato linear_cnt = i; 16058762Skato ++ressz; 16158762Skato } 16258762Skato } 16358762Skato 16478391Snyan re = isa_alloc_resource(bus, child, type, rid, 16578391Snyan start + res[0], start + res[linear_cnt - 1], 16678391Snyan linear_cnt, flags); 16758762Skato if (re == NULL) 16858762Skato return NULL; 16958762Skato 17058762Skato bsre = malloc(sizeof (struct resource *) * ressz, M_DEVBUF, M_NOWAIT); 17158762Skato if (bsre == NULL) { 17258762Skato resource_list_release(rl, bus, child, type, *rid, re); 17358762Skato return NULL; 17458762Skato } 17558762Skato bsre[0] = re; 17658762Skato 17758762Skato for (i = linear_cnt, k = 1; i < count; i = j, k++) { 17858762Skato for (j = i + 1; j < count; j++) { 17965570Snyan if (res[j] != res[j - 1] + 1) 18058762Skato break; 18158762Skato } 18258762Skato bsrid = *rid + k; 18358762Skato bsre[k] = isa_alloc_resource(bus, child, type, &bsrid, 18478391Snyan start + res[i], start + res[j - 1], j - i, flags); 18558762Skato if (bsre[k] == NULL) { 18658762Skato for (k--; k >= 0; k--) 18758762Skato resource_list_release(rl, bus, child, type, 18858762Skato *rid + k, bsre[k]); 18958762Skato free(bsre, M_DEVBUF); 19058762Skato return NULL; 19158762Skato } 19258762Skato } 19358762Skato 19467346Skato re->r_bushandle->bsh_res = bsre; 19567346Skato re->r_bushandle->bsh_ressz = ressz; 19658762Skato 19758762Skato return re; 19858762Skato} 19958762Skato 20047398Sdfrint 20158762Skatoisa_load_resourcev(struct resource *re, bus_addr_t *res, bus_size_t count) 20258762Skato{ 20384615Snyan bus_addr_t start; 20458762Skato int i; 20558762Skato 20684615Snyan if (count > re->r_bushandle->bsh_maxiatsz) { 20784615Snyan printf("isa_load_resourcev: map size too large\n"); 20884615Snyan return EINVAL; 20984615Snyan } 21058762Skato 21184615Snyan start = rman_get_start(re); 21284615Snyan for (i = 0; i < re->r_bushandle->bsh_maxiatsz; i++) { 21384615Snyan if (i < count) 21484615Snyan re->r_bushandle->bsh_iat[i] = start + res[i]; 21584615Snyan else 21684615Snyan re->r_bushandle->bsh_iat[i] = start; 21784615Snyan } 21858762Skato 21967346Skato re->r_bushandle->bsh_iatsz = count; 22084615Snyan re->r_bushandle->bsh_bam = re->r_bustag->bs_ra; /* relocate access */ 22158762Skato 22258762Skato return 0; 22358762Skato} 22458762Skato#endif /* PC98 */ 22558762Skato 22658762Skatoint 22745720Speterisa_release_resource(device_t bus, device_t child, int type, int rid, 22845720Speter struct resource *r) 22945720Speter{ 23052174Sdfr struct isa_device* idev = DEVTOISA(child); 23152174Sdfr struct resource_list *rl = &idev->id_resources; 23258762Skato#ifdef PC98 23358762Skato /* 23458762Skato * Indirection support. The type of bus_space_handle_t is 23558762Skato * defined in sys/i386/include/bus_pc98.h. 23658762Skato */ 23758762Skato int i; 23858762Skato 23990762Snyan if (type == SYS_RES_MEMORY || type == SYS_RES_IOPORT) { 24090762Snyan for (i = 1; i < r->r_bushandle->bsh_ressz; i++) 24190762Snyan resource_list_release(rl, bus, child, type, rid + i, 24290762Snyan r->r_bushandle->bsh_res[i]); 24390762Snyan if (r->r_bushandle->bsh_res != NULL) 24490762Snyan free(r->r_bushandle->bsh_res, M_DEVBUF); 24590762Snyan } 24658762Skato#endif 24752174Sdfr return resource_list_release(rl, bus, child, type, rid, r); 2484Srgrimes} 2494Srgrimes 2504Srgrimes/* 25145720Speter * We can't use the bus_generic_* versions of these methods because those 25245720Speter * methods always pass the bus param as the requesting device, and we need 25345720Speter * to pass the child (the i386 nexus knows about this and is prepared to 25445720Speter * deal). 2554Srgrimes */ 25647398Sdfrint 25746743Sdfrisa_setup_intr(device_t bus, device_t child, struct resource *r, int flags, 25845720Speter void (*ihand)(void *), void *arg, void **cookiep) 25931457Sjmg{ 26046743Sdfr return (BUS_SETUP_INTR(device_get_parent(bus), child, r, flags, 26146743Sdfr ihand, arg, cookiep)); 2624Srgrimes} 2634Srgrimes 26447398Sdfrint 26545720Speterisa_teardown_intr(device_t bus, device_t child, struct resource *r, 26645720Speter void *cookie) 26727639Smsmith{ 26845720Speter return (BUS_TEARDOWN_INTR(device_get_parent(bus), child, r, cookie)); 26927639Smsmith} 270