c37faf267c
- Factor out code common to all ISA bridge drivers attach methods into a isab_attach() function. - Rename the PCI-ISA bridge driver's attach function to pci_isab_attach() and have it call isab_attach().
1137 lines
26 KiB
C
1137 lines
26 KiB
C
/*-
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* Copyright (c) 1999 Doug Rabson
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* Modifications for Intel architecture by Garrett A. Wollman.
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* Copyright 1998 Massachusetts Institute of Technology
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*
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* Permission to use, copy, modify, and distribute this software and
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* its documentation for any purpose and without fee is hereby
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* granted, provided that both the above copyright notice and this
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* permission notice appear in all copies, that both the above
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* copyright notice and this permission notice appear in all
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* supporting documentation, and that the name of M.I.T. not be used
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* in advertising or publicity pertaining to distribution of the
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* software without specific, written prior permission. M.I.T. makes
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* no representations about the suitability of this software for any
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* purpose. It is provided "as is" without express or implied
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* warranty.
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*
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* THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS
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* ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
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* SHALL M.I.T. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* Parts of the ISA bus implementation common to all architectures.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/bus.h>
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#include <sys/malloc.h>
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#include <sys/module.h>
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#include <machine/bus.h>
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#include <sys/rman.h>
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#include <machine/resource.h>
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#include <isa/isavar.h>
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#include <isa/isa_common.h>
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#ifdef __alpha__ /* XXX workaround a stupid warning */
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#include <alpha/isa/isavar.h>
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#endif
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static int isa_print_child(device_t bus, device_t dev);
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static MALLOC_DEFINE(M_ISADEV, "isadev", "ISA device");
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static devclass_t isa_devclass;
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static int isa_running;
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/*
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* At 'probe' time, we add all the devices which we know about to the
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* bus. The generic attach routine will probe and attach them if they
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* are alive.
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*/
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static int
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isa_probe(device_t dev)
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{
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device_set_desc(dev, "ISA bus");
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isa_init(dev); /* Allow machdep code to initialise */
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return 0;
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}
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extern device_t isa_bus_device;
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static int
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isa_attach(device_t dev)
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{
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/*
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* Arrange for isa_probe_children(dev) to be called later. XXX
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*/
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isa_bus_device = dev;
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return 0;
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}
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/*
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* Find a working set of memory regions for a child using the ranges
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* in *config and return the regions in *result. Returns non-zero if
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* a set of ranges was found.
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*/
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static int
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isa_find_memory(device_t child,
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struct isa_config *config,
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struct isa_config *result)
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{
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int success, i;
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struct resource *res[ISA_NMEM];
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/*
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* First clear out any existing resource definitions.
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*/
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for (i = 0; i < ISA_NMEM; i++) {
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bus_delete_resource(child, SYS_RES_MEMORY, i);
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res[i] = NULL;
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}
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success = 1;
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result->ic_nmem = config->ic_nmem;
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for (i = 0; i < config->ic_nmem; i++) {
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u_int32_t start, end, size, align;
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size = config->ic_mem[i].ir_size;
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/* the PnP device may have a null resource as filler */
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if (size == 0) {
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result->ic_mem[i].ir_start = 0;
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result->ic_mem[i].ir_end = 0;
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result->ic_mem[i].ir_size = 0;
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result->ic_mem[i].ir_align = 0;
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continue;
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}
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for (start = config->ic_mem[i].ir_start,
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end = config->ic_mem[i].ir_end,
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align = config->ic_mem[i].ir_align;
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start + size - 1 <= end;
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start += align) {
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bus_set_resource(child, SYS_RES_MEMORY, i,
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start, size);
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res[i] = bus_alloc_resource(child,
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SYS_RES_MEMORY, &i,
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0, ~0, 1, 0 /* !RF_ACTIVE */);
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if (res[i]) {
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result->ic_mem[i].ir_start = start;
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result->ic_mem[i].ir_end = start + size - 1;
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result->ic_mem[i].ir_size = size;
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result->ic_mem[i].ir_align = align;
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break;
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}
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}
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/*
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* If we didn't find a place for memory range i, then
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* give up now.
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*/
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if (!res[i]) {
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success = 0;
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break;
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}
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}
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for (i = 0; i < ISA_NMEM; i++) {
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if (res[i])
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bus_release_resource(child, SYS_RES_MEMORY,
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i, res[i]);
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}
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return success;
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}
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/*
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* Find a working set of port regions for a child using the ranges
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* in *config and return the regions in *result. Returns non-zero if
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* a set of ranges was found.
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*/
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static int
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isa_find_port(device_t child,
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struct isa_config *config,
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struct isa_config *result)
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{
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int success, i;
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struct resource *res[ISA_NPORT];
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/*
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* First clear out any existing resource definitions.
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*/
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for (i = 0; i < ISA_NPORT; i++) {
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bus_delete_resource(child, SYS_RES_IOPORT, i);
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res[i] = NULL;
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}
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success = 1;
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result->ic_nport = config->ic_nport;
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for (i = 0; i < config->ic_nport; i++) {
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u_int32_t start, end, size, align;
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size = config->ic_port[i].ir_size;
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/* the PnP device may have a null resource as filler */
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if (size == 0) {
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result->ic_port[i].ir_start = 0;
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result->ic_port[i].ir_end = 0;
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result->ic_port[i].ir_size = 0;
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result->ic_port[i].ir_align = 0;
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continue;
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}
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for (start = config->ic_port[i].ir_start,
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end = config->ic_port[i].ir_end,
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align = config->ic_port[i].ir_align;
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start + size - 1 <= end;
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start += align) {
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bus_set_resource(child, SYS_RES_IOPORT, i,
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start, size);
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res[i] = bus_alloc_resource(child,
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SYS_RES_IOPORT, &i,
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0, ~0, 1, 0 /* !RF_ACTIVE */);
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if (res[i]) {
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result->ic_port[i].ir_start = start;
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result->ic_port[i].ir_end = start + size - 1;
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result->ic_port[i].ir_size = size;
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result->ic_port[i].ir_align = align;
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break;
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}
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}
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/*
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* If we didn't find a place for port range i, then
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* give up now.
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*/
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if (!res[i]) {
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success = 0;
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break;
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}
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}
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for (i = 0; i < ISA_NPORT; i++) {
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if (res[i])
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bus_release_resource(child, SYS_RES_IOPORT,
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i, res[i]);
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}
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return success;
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}
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/*
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* Return the index of the first bit in the mask (or -1 if mask is empty.
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*/
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static int
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find_first_bit(u_int32_t mask)
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{
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return ffs(mask) - 1;
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}
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/*
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* Return the index of the next bit in the mask, or -1 if there are no more.
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*/
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static int
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find_next_bit(u_int32_t mask, int bit)
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{
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bit++;
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while (bit < 32 && !(mask & (1 << bit)))
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bit++;
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if (bit != 32)
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return bit;
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return -1;
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}
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/*
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* Find a working set of irqs for a child using the masks in *config
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* and return the regions in *result. Returns non-zero if a set of
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* irqs was found.
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*/
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static int
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isa_find_irq(device_t child,
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struct isa_config *config,
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struct isa_config *result)
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{
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int success, i;
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struct resource *res[ISA_NIRQ];
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/*
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* First clear out any existing resource definitions.
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*/
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for (i = 0; i < ISA_NIRQ; i++) {
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bus_delete_resource(child, SYS_RES_IRQ, i);
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res[i] = NULL;
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}
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success = 1;
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result->ic_nirq = config->ic_nirq;
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for (i = 0; i < config->ic_nirq; i++) {
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u_int32_t mask = config->ic_irqmask[i];
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int irq;
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/* the PnP device may have a null resource as filler */
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if (mask == 0) {
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result->ic_irqmask[i] = 0;
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continue;
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}
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for (irq = find_first_bit(mask);
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irq != -1;
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irq = find_next_bit(mask, irq)) {
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bus_set_resource(child, SYS_RES_IRQ, i,
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irq, 1);
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res[i] = bus_alloc_resource(child,
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SYS_RES_IRQ, &i,
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0, ~0, 1, 0 /* !RF_ACTIVE */ );
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if (res[i]) {
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result->ic_irqmask[i] = (1 << irq);
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break;
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}
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}
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/*
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* If we didn't find a place for irq range i, then
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* give up now.
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*/
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if (!res[i]) {
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success = 0;
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break;
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}
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}
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for (i = 0; i < ISA_NIRQ; i++) {
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if (res[i])
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bus_release_resource(child, SYS_RES_IRQ,
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i, res[i]);
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}
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return success;
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}
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/*
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* Find a working set of drqs for a child using the masks in *config
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* and return the regions in *result. Returns non-zero if a set of
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* drqs was found.
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*/
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static int
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isa_find_drq(device_t child,
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struct isa_config *config,
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struct isa_config *result)
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{
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int success, i;
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struct resource *res[ISA_NDRQ];
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/*
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* First clear out any existing resource definitions.
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*/
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for (i = 0; i < ISA_NDRQ; i++) {
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bus_delete_resource(child, SYS_RES_DRQ, i);
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res[i] = NULL;
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}
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success = 1;
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result->ic_ndrq = config->ic_ndrq;
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for (i = 0; i < config->ic_ndrq; i++) {
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u_int32_t mask = config->ic_drqmask[i];
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int drq;
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/* the PnP device may have a null resource as filler */
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if (mask == 0) {
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result->ic_drqmask[i] = 0;
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continue;
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}
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for (drq = find_first_bit(mask);
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drq != -1;
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drq = find_next_bit(mask, drq)) {
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bus_set_resource(child, SYS_RES_DRQ, i,
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drq, 1);
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res[i] = bus_alloc_resource(child,
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SYS_RES_DRQ, &i,
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0, ~0, 1, 0 /* !RF_ACTIVE */);
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if (res[i]) {
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result->ic_drqmask[i] = (1 << drq);
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break;
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}
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}
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/*
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* If we didn't find a place for drq range i, then
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* give up now.
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*/
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if (!res[i]) {
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success = 0;
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break;
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}
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}
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for (i = 0; i < ISA_NDRQ; i++) {
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if (res[i])
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bus_release_resource(child, SYS_RES_DRQ,
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i, res[i]);
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}
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return success;
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}
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|
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/*
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* Attempt to find a working set of resources for a device. Return
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* non-zero if a working configuration is found.
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*/
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static int
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isa_assign_resources(device_t child)
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{
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struct isa_device *idev = DEVTOISA(child);
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struct isa_config_entry *ice;
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struct isa_config *cfg;
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const char *reason;
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reason = "Empty ISA id_configs";
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cfg = malloc(sizeof(struct isa_config), M_TEMP, M_NOWAIT|M_ZERO);
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if (cfg == NULL)
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return(0);
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TAILQ_FOREACH(ice, &idev->id_configs, ice_link) {
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reason = "memory";
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if (!isa_find_memory(child, &ice->ice_config, cfg))
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continue;
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reason = "port";
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if (!isa_find_port(child, &ice->ice_config, cfg))
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continue;
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reason = "irq";
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if (!isa_find_irq(child, &ice->ice_config, cfg))
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continue;
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reason = "drq";
|
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if (!isa_find_drq(child, &ice->ice_config, cfg))
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continue;
|
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|
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/*
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* A working configuration was found enable the device
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* with this configuration.
|
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*/
|
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reason = "no callback";
|
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if (idev->id_config_cb) {
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idev->id_config_cb(idev->id_config_arg,
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cfg, 1);
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free(cfg, M_TEMP);
|
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return 1;
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}
|
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}
|
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|
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/*
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* Disable the device.
|
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*/
|
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bus_print_child_header(device_get_parent(child), child);
|
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printf(" can't assign resources (%s)\n", reason);
|
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if (bootverbose)
|
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isa_print_child(device_get_parent(child), child);
|
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bzero(cfg, sizeof (*cfg));
|
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if (idev->id_config_cb)
|
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idev->id_config_cb(idev->id_config_arg, cfg, 0);
|
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device_disable(child);
|
|
|
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free(cfg, M_TEMP);
|
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return 0;
|
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}
|
|
|
|
/*
|
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* Return non-zero if the device has a single configuration, that is,
|
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* a fixed set of resoruces.
|
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*/
|
|
static int
|
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isa_has_single_config(device_t dev)
|
|
{
|
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struct isa_device *idev = DEVTOISA(dev);
|
|
struct isa_config_entry *ice;
|
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u_int32_t mask;
|
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int i;
|
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|
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ice = TAILQ_FIRST(&idev->id_configs);
|
|
if (TAILQ_NEXT(ice, ice_link))
|
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return 0;
|
|
|
|
for (i = 0; i < ice->ice_config.ic_nmem; ++i) {
|
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if (ice->ice_config.ic_mem[i].ir_size == 0)
|
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continue;
|
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if (ice->ice_config.ic_mem[i].ir_end !=
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ice->ice_config.ic_mem[i].ir_start +
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ice->ice_config.ic_mem[i].ir_size - 1)
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return 0;
|
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}
|
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for (i = 0; i < ice->ice_config.ic_nport; ++i) {
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if (ice->ice_config.ic_port[i].ir_size == 0)
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continue;
|
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if (ice->ice_config.ic_port[i].ir_end !=
|
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ice->ice_config.ic_port[i].ir_start +
|
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ice->ice_config.ic_port[i].ir_size - 1)
|
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return 0;
|
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}
|
|
for (i = 0; i < ice->ice_config.ic_nirq; ++i) {
|
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mask = ice->ice_config.ic_irqmask[i];
|
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if (mask == 0)
|
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continue;
|
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if (find_next_bit(mask, find_first_bit(mask)) != -1)
|
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return 0;
|
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}
|
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for (i = 0; i < ice->ice_config.ic_ndrq; ++i) {
|
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mask = ice->ice_config.ic_drqmask[i];
|
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if (mask == 0)
|
|
continue;
|
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if (find_next_bit(mask, find_first_bit(mask)) != -1)
|
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return 0;
|
|
}
|
|
return 1;
|
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}
|
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|
|
/*
|
|
* Called after other devices have initialised to probe for isa devices.
|
|
*/
|
|
void
|
|
isa_probe_children(device_t dev)
|
|
{
|
|
device_t *children;
|
|
struct isa_config *cfg;
|
|
int nchildren, i;
|
|
|
|
/*
|
|
* Create all the children by calling driver's identify methods.
|
|
*/
|
|
bus_generic_probe(dev);
|
|
|
|
if (device_get_children(dev, &children, &nchildren))
|
|
return;
|
|
|
|
/*
|
|
* First disable all pnp devices so that they don't get
|
|
* matched by legacy probes.
|
|
*/
|
|
if (bootverbose)
|
|
printf("isa_probe_children: disabling PnP devices\n");
|
|
|
|
cfg = malloc(sizeof(*cfg), M_TEMP, M_NOWAIT|M_ZERO);
|
|
if (cfg == NULL) {
|
|
free(children, M_TEMP);
|
|
return;
|
|
}
|
|
|
|
for (i = 0; i < nchildren; i++) {
|
|
device_t child = children[i];
|
|
struct isa_device *idev = DEVTOISA(child);
|
|
|
|
bzero(cfg, sizeof(*cfg));
|
|
if (idev->id_config_cb)
|
|
idev->id_config_cb(idev->id_config_arg, cfg, 0);
|
|
}
|
|
|
|
free(cfg, M_TEMP);
|
|
|
|
/*
|
|
* Next probe all non-pnp devices so that they claim their
|
|
* resources first.
|
|
*/
|
|
if (bootverbose)
|
|
printf("isa_probe_children: probing non-PnP devices\n");
|
|
for (i = 0; i < nchildren; i++) {
|
|
device_t child = children[i];
|
|
struct isa_device *idev = DEVTOISA(child);
|
|
|
|
if (TAILQ_FIRST(&idev->id_configs))
|
|
continue;
|
|
|
|
device_probe_and_attach(child);
|
|
}
|
|
|
|
/*
|
|
* Finally assign resource to pnp devices and probe them.
|
|
*/
|
|
if (bootverbose)
|
|
printf("isa_probe_children: probing PnP devices\n");
|
|
for (i = 0; i < nchildren; i++) {
|
|
device_t child = children[i];
|
|
struct isa_device* idev = DEVTOISA(child);
|
|
|
|
if (!TAILQ_FIRST(&idev->id_configs))
|
|
continue;
|
|
|
|
if (isa_assign_resources(child)) {
|
|
struct resource_list *rl = &idev->id_resources;
|
|
struct resource_list_entry *rle;
|
|
|
|
device_probe_and_attach(child);
|
|
|
|
/*
|
|
* Claim any unallocated resources to keep other
|
|
* devices from using them.
|
|
*/
|
|
SLIST_FOREACH(rle, rl, link) {
|
|
if (!rle->res) {
|
|
int rid = rle->rid;
|
|
resource_list_alloc(rl, dev, child,
|
|
rle->type,
|
|
&rid,
|
|
0, ~0, 1, 0);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
free(children, M_TEMP);
|
|
|
|
isa_running = 1;
|
|
}
|
|
|
|
/*
|
|
* Add a new child with default ivars.
|
|
*/
|
|
static device_t
|
|
isa_add_child(device_t dev, int order, const char *name, int unit)
|
|
{
|
|
device_t child;
|
|
struct isa_device *idev;
|
|
|
|
child = device_add_child_ordered(dev, order, name, unit);
|
|
if (child == NULL)
|
|
return (child);
|
|
|
|
idev = malloc(sizeof(struct isa_device), M_ISADEV, M_NOWAIT | M_ZERO);
|
|
if (!idev)
|
|
return 0;
|
|
|
|
resource_list_init(&idev->id_resources);
|
|
TAILQ_INIT(&idev->id_configs);
|
|
|
|
device_set_ivars(child, idev);
|
|
|
|
return (child);
|
|
}
|
|
|
|
static int
|
|
isa_print_all_resources(device_t dev)
|
|
{
|
|
struct isa_device *idev = DEVTOISA(dev);
|
|
struct resource_list *rl = &idev->id_resources;
|
|
int retval = 0;
|
|
|
|
if (SLIST_FIRST(rl) || device_get_flags(dev))
|
|
retval += printf(" at");
|
|
|
|
retval += resource_list_print_type(rl, "port", SYS_RES_IOPORT, "%#lx");
|
|
retval += resource_list_print_type(rl, "iomem", SYS_RES_MEMORY, "%#lx");
|
|
retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld");
|
|
retval += resource_list_print_type(rl, "drq", SYS_RES_DRQ, "%ld");
|
|
if (device_get_flags(dev))
|
|
retval += printf(" flags %#x", device_get_flags(dev));
|
|
|
|
return retval;
|
|
}
|
|
|
|
static int
|
|
isa_print_child(device_t bus, device_t dev)
|
|
{
|
|
int retval = 0;
|
|
|
|
retval += bus_print_child_header(bus, dev);
|
|
retval += isa_print_all_resources(dev);
|
|
retval += bus_print_child_footer(bus, dev);
|
|
|
|
return (retval);
|
|
}
|
|
|
|
static void
|
|
isa_probe_nomatch(device_t dev, device_t child)
|
|
{
|
|
if (bootverbose) {
|
|
bus_print_child_header(dev, child);
|
|
printf(" failed to probe");
|
|
isa_print_all_resources(child);
|
|
bus_print_child_footer(dev, child);
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
static int
|
|
isa_read_ivar(device_t bus, device_t dev, int index, uintptr_t * result)
|
|
{
|
|
struct isa_device* idev = DEVTOISA(dev);
|
|
struct resource_list *rl = &idev->id_resources;
|
|
struct resource_list_entry *rle;
|
|
|
|
switch (index) {
|
|
case ISA_IVAR_PORT_0:
|
|
rle = resource_list_find(rl, SYS_RES_IOPORT, 0);
|
|
if (rle)
|
|
*result = rle->start;
|
|
else
|
|
*result = -1;
|
|
break;
|
|
|
|
case ISA_IVAR_PORT_1:
|
|
rle = resource_list_find(rl, SYS_RES_IOPORT, 1);
|
|
if (rle)
|
|
*result = rle->start;
|
|
else
|
|
*result = -1;
|
|
break;
|
|
|
|
case ISA_IVAR_PORTSIZE_0:
|
|
rle = resource_list_find(rl, SYS_RES_IOPORT, 0);
|
|
if (rle)
|
|
*result = rle->count;
|
|
else
|
|
*result = 0;
|
|
break;
|
|
|
|
case ISA_IVAR_PORTSIZE_1:
|
|
rle = resource_list_find(rl, SYS_RES_IOPORT, 1);
|
|
if (rle)
|
|
*result = rle->count;
|
|
else
|
|
*result = 0;
|
|
break;
|
|
|
|
case ISA_IVAR_MADDR_0:
|
|
rle = resource_list_find(rl, SYS_RES_MEMORY, 0);
|
|
if (rle)
|
|
*result = rle->start;
|
|
else
|
|
*result = -1;
|
|
break;
|
|
|
|
case ISA_IVAR_MADDR_1:
|
|
rle = resource_list_find(rl, SYS_RES_MEMORY, 1);
|
|
if (rle)
|
|
*result = rle->start;
|
|
else
|
|
*result = -1;
|
|
break;
|
|
|
|
case ISA_IVAR_MEMSIZE_0:
|
|
rle = resource_list_find(rl, SYS_RES_MEMORY, 0);
|
|
if (rle)
|
|
*result = rle->count;
|
|
else
|
|
*result = 0;
|
|
break;
|
|
|
|
case ISA_IVAR_MEMSIZE_1:
|
|
rle = resource_list_find(rl, SYS_RES_MEMORY, 1);
|
|
if (rle)
|
|
*result = rle->count;
|
|
else
|
|
*result = 0;
|
|
break;
|
|
|
|
case ISA_IVAR_IRQ_0:
|
|
rle = resource_list_find(rl, SYS_RES_IRQ, 0);
|
|
if (rle)
|
|
*result = rle->start;
|
|
else
|
|
*result = -1;
|
|
break;
|
|
|
|
case ISA_IVAR_IRQ_1:
|
|
rle = resource_list_find(rl, SYS_RES_IRQ, 1);
|
|
if (rle)
|
|
*result = rle->start;
|
|
else
|
|
*result = -1;
|
|
break;
|
|
|
|
case ISA_IVAR_DRQ_0:
|
|
rle = resource_list_find(rl, SYS_RES_DRQ, 0);
|
|
if (rle)
|
|
*result = rle->start;
|
|
else
|
|
*result = -1;
|
|
break;
|
|
|
|
case ISA_IVAR_DRQ_1:
|
|
rle = resource_list_find(rl, SYS_RES_DRQ, 1);
|
|
if (rle)
|
|
*result = rle->start;
|
|
else
|
|
*result = -1;
|
|
break;
|
|
|
|
case ISA_IVAR_VENDORID:
|
|
*result = idev->id_vendorid;
|
|
break;
|
|
|
|
case ISA_IVAR_SERIAL:
|
|
*result = idev->id_serial;
|
|
break;
|
|
|
|
case ISA_IVAR_LOGICALID:
|
|
*result = idev->id_logicalid;
|
|
break;
|
|
|
|
case ISA_IVAR_COMPATID:
|
|
*result = idev->id_compatid;
|
|
break;
|
|
|
|
case ISA_IVAR_CONFIGATTR:
|
|
*result = idev->id_config_attr;
|
|
break;
|
|
|
|
default:
|
|
return ENOENT;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
isa_write_ivar(device_t bus, device_t dev,
|
|
int index, uintptr_t value)
|
|
{
|
|
struct isa_device* idev = DEVTOISA(dev);
|
|
|
|
switch (index) {
|
|
case ISA_IVAR_PORT_0:
|
|
case ISA_IVAR_PORT_1:
|
|
case ISA_IVAR_PORTSIZE_0:
|
|
case ISA_IVAR_PORTSIZE_1:
|
|
case ISA_IVAR_MADDR_0:
|
|
case ISA_IVAR_MADDR_1:
|
|
case ISA_IVAR_MEMSIZE_0:
|
|
case ISA_IVAR_MEMSIZE_1:
|
|
case ISA_IVAR_IRQ_0:
|
|
case ISA_IVAR_IRQ_1:
|
|
case ISA_IVAR_DRQ_0:
|
|
case ISA_IVAR_DRQ_1:
|
|
return EINVAL;
|
|
|
|
case ISA_IVAR_VENDORID:
|
|
idev->id_vendorid = value;
|
|
break;
|
|
|
|
case ISA_IVAR_SERIAL:
|
|
idev->id_serial = value;
|
|
break;
|
|
|
|
case ISA_IVAR_LOGICALID:
|
|
idev->id_logicalid = value;
|
|
break;
|
|
|
|
case ISA_IVAR_COMPATID:
|
|
idev->id_compatid = value;
|
|
break;
|
|
|
|
case ISA_IVAR_CONFIGATTR:
|
|
idev->id_config_attr = value;
|
|
break;
|
|
|
|
default:
|
|
return (ENOENT);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Free any resources which the driver missed or which we were holding for
|
|
* it (see isa_probe_children).
|
|
*/
|
|
static void
|
|
isa_child_detached(device_t dev, device_t child)
|
|
{
|
|
struct isa_device* idev = DEVTOISA(child);
|
|
struct resource_list *rl = &idev->id_resources;
|
|
struct resource_list_entry *rle;
|
|
|
|
if (TAILQ_FIRST(&idev->id_configs)) {
|
|
/*
|
|
* Claim any unallocated resources to keep other
|
|
* devices from using them.
|
|
*/
|
|
SLIST_FOREACH(rle, rl, link) {
|
|
if (!rle->res) {
|
|
int rid = rle->rid;
|
|
resource_list_alloc(rl, dev, child,
|
|
rle->type,
|
|
&rid, 0, ~0, 1, 0);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
isa_driver_added(device_t dev, driver_t *driver)
|
|
{
|
|
device_t *children;
|
|
int nchildren, i;
|
|
|
|
/*
|
|
* Don't do anything if drivers are dynamically
|
|
* added during autoconfiguration (cf. ymf724).
|
|
* since that would end up calling identify
|
|
* twice.
|
|
*/
|
|
if (!isa_running)
|
|
return;
|
|
|
|
DEVICE_IDENTIFY(driver, dev);
|
|
if (device_get_children(dev, &children, &nchildren))
|
|
return;
|
|
|
|
for (i = 0; i < nchildren; i++) {
|
|
device_t child = children[i];
|
|
struct isa_device *idev = DEVTOISA(child);
|
|
struct resource_list *rl = &idev->id_resources;
|
|
struct resource_list_entry *rle;
|
|
|
|
if (device_get_state(child) != DS_NOTPRESENT)
|
|
continue;
|
|
if (!device_is_enabled(child))
|
|
continue;
|
|
|
|
/*
|
|
* Free resources which we were holding on behalf of
|
|
* the device.
|
|
*/
|
|
SLIST_FOREACH(rle, &idev->id_resources, link) {
|
|
if (rle->res)
|
|
resource_list_release(rl, dev, child,
|
|
rle->type,
|
|
rle->rid,
|
|
rle->res);
|
|
}
|
|
|
|
if (TAILQ_FIRST(&idev->id_configs))
|
|
if (!isa_assign_resources(child))
|
|
continue;
|
|
|
|
device_probe_and_attach(child);
|
|
|
|
if (TAILQ_FIRST(&idev->id_configs)) {
|
|
/*
|
|
* Claim any unallocated resources to keep other
|
|
* devices from using them.
|
|
*/
|
|
SLIST_FOREACH(rle, rl, link) {
|
|
if (!rle->res) {
|
|
int rid = rle->rid;
|
|
resource_list_alloc(rl, dev, child,
|
|
rle->type,
|
|
&rid, 0, ~0, 1, 0);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
free(children, M_TEMP);
|
|
}
|
|
|
|
static int
|
|
isa_set_resource(device_t dev, device_t child, int type, int rid,
|
|
u_long start, u_long count)
|
|
{
|
|
struct isa_device* idev = DEVTOISA(child);
|
|
struct resource_list *rl = &idev->id_resources;
|
|
|
|
if (type != SYS_RES_IOPORT && type != SYS_RES_MEMORY
|
|
&& type != SYS_RES_IRQ && type != SYS_RES_DRQ)
|
|
return EINVAL;
|
|
if (rid < 0)
|
|
return EINVAL;
|
|
if (type == SYS_RES_IOPORT && rid >= ISA_NPORT)
|
|
return EINVAL;
|
|
if (type == SYS_RES_MEMORY && rid >= ISA_NMEM)
|
|
return EINVAL;
|
|
if (type == SYS_RES_IRQ && rid >= ISA_NIRQ)
|
|
return EINVAL;
|
|
if (type == SYS_RES_DRQ && rid >= ISA_NDRQ)
|
|
return EINVAL;
|
|
|
|
resource_list_add(rl, type, rid, start, start + count - 1, count);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct resource_list *
|
|
isa_get_resource_list (device_t dev, device_t child)
|
|
{
|
|
struct isa_device* idev = DEVTOISA(child);
|
|
struct resource_list *rl = &idev->id_resources;
|
|
|
|
if (!rl)
|
|
return (NULL);
|
|
|
|
return (rl);
|
|
}
|
|
|
|
static int
|
|
isa_add_config(device_t dev, device_t child,
|
|
int priority, struct isa_config *config)
|
|
{
|
|
struct isa_device* idev = DEVTOISA(child);
|
|
struct isa_config_entry *newice, *ice;
|
|
|
|
newice = malloc(sizeof *ice, M_DEVBUF, M_NOWAIT);
|
|
if (!newice)
|
|
return ENOMEM;
|
|
|
|
newice->ice_priority = priority;
|
|
newice->ice_config = *config;
|
|
|
|
TAILQ_FOREACH(ice, &idev->id_configs, ice_link) {
|
|
if (ice->ice_priority > priority)
|
|
break;
|
|
}
|
|
if (ice)
|
|
TAILQ_INSERT_BEFORE(ice, newice, ice_link);
|
|
else
|
|
TAILQ_INSERT_TAIL(&idev->id_configs, newice, ice_link);
|
|
|
|
if (isa_has_single_config(child))
|
|
idev->id_config_attr &= ~ISACFGATTR_MULTI;
|
|
else
|
|
idev->id_config_attr |= ISACFGATTR_MULTI;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
isa_set_config_callback(device_t dev, device_t child,
|
|
isa_config_cb *fn, void *arg)
|
|
{
|
|
struct isa_device* idev = DEVTOISA(child);
|
|
|
|
idev->id_config_cb = fn;
|
|
idev->id_config_arg = arg;
|
|
}
|
|
|
|
static int
|
|
isa_pnp_probe(device_t dev, device_t child, struct isa_pnp_id *ids)
|
|
{
|
|
struct isa_device* idev = DEVTOISA(child);
|
|
|
|
if (!idev->id_vendorid)
|
|
return ENOENT;
|
|
|
|
while (ids && ids->ip_id) {
|
|
/*
|
|
* Really ought to support >1 compat id per device.
|
|
*/
|
|
if (idev->id_logicalid == ids->ip_id
|
|
|| idev->id_compatid == ids->ip_id) {
|
|
if (ids->ip_desc)
|
|
device_set_desc(child, ids->ip_desc);
|
|
return 0;
|
|
}
|
|
ids++;
|
|
}
|
|
|
|
return ENXIO;
|
|
}
|
|
|
|
static device_method_t isa_methods[] = {
|
|
/* Device interface */
|
|
DEVMETHOD(device_probe, isa_probe),
|
|
DEVMETHOD(device_attach, isa_attach),
|
|
DEVMETHOD(device_detach, bus_generic_detach),
|
|
DEVMETHOD(device_shutdown, bus_generic_shutdown),
|
|
DEVMETHOD(device_suspend, bus_generic_suspend),
|
|
DEVMETHOD(device_resume, bus_generic_resume),
|
|
|
|
/* Bus interface */
|
|
DEVMETHOD(bus_add_child, isa_add_child),
|
|
DEVMETHOD(bus_print_child, isa_print_child),
|
|
DEVMETHOD(bus_probe_nomatch, isa_probe_nomatch),
|
|
DEVMETHOD(bus_read_ivar, isa_read_ivar),
|
|
DEVMETHOD(bus_write_ivar, isa_write_ivar),
|
|
DEVMETHOD(bus_child_detached, isa_child_detached),
|
|
DEVMETHOD(bus_driver_added, isa_driver_added),
|
|
DEVMETHOD(bus_setup_intr, isa_setup_intr),
|
|
DEVMETHOD(bus_teardown_intr, isa_teardown_intr),
|
|
|
|
DEVMETHOD(bus_get_resource_list,isa_get_resource_list),
|
|
DEVMETHOD(bus_alloc_resource, isa_alloc_resource),
|
|
DEVMETHOD(bus_release_resource, isa_release_resource),
|
|
DEVMETHOD(bus_set_resource, isa_set_resource),
|
|
DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource),
|
|
DEVMETHOD(bus_delete_resource, bus_generic_rl_delete_resource),
|
|
DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
|
|
DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
|
|
|
|
/* ISA interface */
|
|
DEVMETHOD(isa_add_config, isa_add_config),
|
|
DEVMETHOD(isa_set_config_callback, isa_set_config_callback),
|
|
DEVMETHOD(isa_pnp_probe, isa_pnp_probe),
|
|
|
|
{ 0, 0 }
|
|
};
|
|
|
|
static driver_t isa_driver = {
|
|
"isa",
|
|
isa_methods,
|
|
1, /* no softc */
|
|
};
|
|
|
|
/*
|
|
* ISA can be attached to a PCI-ISA bridge or directly to the legacy device.
|
|
*/
|
|
DRIVER_MODULE(isa, isab, isa_driver, isa_devclass, 0, 0);
|
|
DRIVER_MODULE(isa, eisab, isa_driver, isa_devclass, 0, 0);
|
|
#if defined(__i386__) || defined(__amd64__)
|
|
DRIVER_MODULE(isa, legacy, isa_driver, isa_devclass, 0, 0);
|
|
#endif
|
|
MODULE_VERSION(isa, 1);
|
|
|
|
/*
|
|
* Code common to ISA bridges.
|
|
*/
|
|
|
|
devclass_t isab_devclass;
|
|
|
|
int
|
|
isab_attach(device_t dev)
|
|
{
|
|
device_t child;
|
|
|
|
child = device_add_child(dev, "isa", 0);
|
|
if (child != NULL)
|
|
return (bus_generic_attach(dev));
|
|
return (ENXIO);
|
|
}
|