21c3015a24
the drivers. * Remove legacy inx/outx support from chipset and replace with macros which call busspace. * Rework pci config accesses to route through the pcib device instead of calling a MD function directly. With these changes it is possible to cleanly support machines which have more than one independantly numbered PCI busses. As a bonus, the new busspace implementation should be measurably faster than the old one.
72 lines
2.3 KiB
Objective-C
72 lines
2.3 KiB
Objective-C
#
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# Copyright (c) 2000 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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#include <sys/bus.h>
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INTERFACE pcib;
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#
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# Return the number of slots on the attached PCI bus.
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#
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METHOD int maxslots {
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device_t dev;
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};
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#
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# Read configuration space on the PCI bus. The bus, slot and func
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# arguments determine the device which is being read and the reg
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# argument is a byte offset into configuration space for that
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# device. The width argument (which should be 1, 2 or 4) specifies how
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# many byte of configuration space to read from that offset.
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#
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METHOD u_int32_t read_config {
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device_t dev;
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int bus;
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int slot;
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int func;
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int reg;
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int width;
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};
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#
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# Write configuration space on the PCI bus. The bus, slot and func
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# arguments determine the device which is being written and the reg
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# argument is a byte offset into configuration space for that
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# device. The value field is written to the configuration space, with
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# the number of bytes written depending on the width argument.
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#
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METHOD void write_config {
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device_t dev;
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int bus;
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int slot;
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int func;
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int reg;
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u_int32_t value;
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int width;
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};
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