14177d72cd
- Interface wth the new resource manager. - Allow for multiple drivers implementing a single devclass. - Remove ordering dependencies between header files. - Style cleanup. - Add DEVICE_SUSPEND and DEVICE_RESUME methods. - Move to a single-phase interrupt setup scheme. Kernel builds on the Alpha are brken until Doug gets a chance to incorporate these changes on that side. Agreed to in principle by: dfr
142 lines
4.0 KiB
Objective-C
142 lines
4.0 KiB
Objective-C
#
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# Copyright (c) 1998 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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# $Id: bus_if.m,v 1.4 1998/11/08 18:51:38 nsouch Exp $
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#
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INTERFACE bus;
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#
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# This is called from system code which prints out a description of a
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# device. It should describe the attachment that the child has with
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# the parent. For instance the TurboLaser bus prints which node the
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# device is attached to.
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#
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METHOD void print_child {
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device_t dev;
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device_t child;
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};
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#
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# These two methods manage a bus specific set of instance variables of
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# a child device. The intention is that each different type of bus
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# defines a set of appropriate instance variables (such as ports and
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# irqs for ISA bus etc.)
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#
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# This information could be given to the child device as a struct but
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# that makes it hard for a bus to add or remove variables without
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# forcing an edit and recompile for all drivers which may not be
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# possible for vendor supplied binary drivers.
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#
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# Read an instance variable. Return 0 on success.
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#
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METHOD int read_ivar {
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device_t dev;
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device_t child;
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int index;
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uintptr_t *result;
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};
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#
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# Write an instance variable. Return 0 on success.
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#
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METHOD int write_ivar {
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device_t dev;
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device_t child;
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int index;
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uintptr_t value;
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};
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#
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# Allocate a system resource attached to `dev' on behalf of `child'.
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# The types are defined in <machine/resource.h>; the meaning of the
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# resource-ID field varies from bus to bus (but *rid == 0 is always
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# valid if the resource type is). start and end reflect the allowable
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# range, and should be passed as `0UL' and `~0UL', respectively, if
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# the client has no range restriction. count is the number of consecutive
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# indices in the resource required. flags is a set of sharing flags
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# as defined in <sys/rman.h>.
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#
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# Returns a resource or a null pointer on failure. The caller is
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# responsible for calling rman_activate_resource() when it actually
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# uses the resource.
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#
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METHOD struct resource * alloc_resource {
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device_t dev;
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device_t child;
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int type;
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int *rid;
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u_long start;
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u_long end;
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u_long count;
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u_int flags;
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};
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METHOD int activate_resource {
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device_t dev;
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device_t child;
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int type;
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int rid;
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struct resource *r;
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};
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METHOD int deactivate_resource {
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device_t dev;
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device_t child;
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int type;
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int rid;
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struct resource *r;
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};
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#
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# Free a resource allocated by the preceding method. The `rid' value
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# must be the same as the one returned by BUS_ALLOC_RESOURCE (which
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# is not necessarily the same as the one the client passed).
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#
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METHOD int release_resource {
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device_t dev;
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device_t child;
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int type;
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int rid;
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struct resource *res;
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};
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METHOD int setup_intr {
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device_t dev;
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device_t child;
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struct resource *irq;
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driver_intr_t *intr;
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void *arg;
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void **cookiep;
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};
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METHOD int teardown_intr {
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device_t dev;
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device_t child;
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struct resource *irq;
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void *cookie;
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};
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