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c395939120
the following bugs. - When constructing a resource configuration, respect the order in which resource descriptors are read, in order to establish the correct mapping between the descriptors and configuration registers. "Plug and Play ISA Specification, Version 1.0a", Sec 4.6.1, May 5, 1994. "Clarifications to the Plug and Play ISA Specification, Version 1.0a", Sec 6.2.1, Dec. 10, 1994. - Do not ignore null (empty) descriptors; they are valid descriptors acting as filler. "Clarifications to the Plug and Play ISA Specification, Version 1.0a", Sec 6.2.1. - Correctly set up logical device configuration registers for null resources. "Clarifications to the Plug and Play ISA Specification, Version 1.0a" - Handle null resources properly in the resource allocator for the ISA bus.
86 lines
3.0 KiB
C
86 lines
3.0 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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* $FreeBSD$
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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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* Drivers must not depend on information in this file as it can change
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* without notice.
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*/
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MALLOC_DECLARE(M_ISADEV);
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/*
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* PNP configurations are kept in a tailq.
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*/
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TAILQ_HEAD(isa_config_list, isa_config_entry);
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struct isa_config_entry {
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TAILQ_ENTRY(isa_config_entry) ice_link;
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int ice_priority;
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struct isa_config ice_config;
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};
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/*
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* The structure used to attach devices to the isa bus.
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*/
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struct isa_device {
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struct resource_list id_resources;
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u_int32_t id_vendorid; /* pnp vendor id */
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u_int32_t id_serial; /* pnp serial */
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u_int32_t id_logicalid; /* pnp logical device id */
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u_int32_t id_compatid; /* pnp compat device id */
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struct isa_config_list id_configs; /* pnp config alternatives */
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isa_config_cb *id_config_cb; /* callback function */
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void *id_config_arg; /* callback argument */
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int id_config_attr; /* pnp config attributes */
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};
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#define DEVTOISA(dev) ((struct isa_device *) device_get_ivars(dev))
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/*
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* These functions are architecture dependant.
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*/
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extern void isa_init(void);
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extern struct resource *isa_alloc_resource(device_t bus, device_t child,
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int type, int *rid,
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u_long start, u_long end,
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u_long count, u_int flags);
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extern int isa_release_resource(device_t bus, device_t child,
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int type, int rid,
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struct resource *r);
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/* XXX alphe declares these elsewhere */
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#ifndef __alpha__
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extern int isa_setup_intr(device_t bus, device_t child,
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struct resource *r, int flags,
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void (*ihand)(void *), void *arg, void **cookiep);
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extern int isa_teardown_intr(device_t bus, device_t child,
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struct resource *r, void *cookie);
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#endif
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