diff options
author | dfr <dfr@FreeBSD.org> | 2000-08-28 21:48:13 +0000 |
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committer | dfr <dfr@FreeBSD.org> | 2000-08-28 21:48:13 +0000 |
commit | dd8b44b3958fa67d802cbbec7c7d82f7fb476229 (patch) | |
tree | 61496c144b3ecd15192a2e07e755754e18346bc9 /sys/pci/pcib_if.m | |
parent | 9ed8ded4d312c58a27de9402fd9802e78a591cb9 (diff) | |
download | FreeBSD-src-dd8b44b3958fa67d802cbbec7c7d82f7fb476229.zip FreeBSD-src-dd8b44b3958fa67d802cbbec7c7d82f7fb476229.tar.gz |
* Completely rewrite the alpha busspace to hide the implementation from
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.
Diffstat (limited to 'sys/pci/pcib_if.m')
-rw-r--r-- | sys/pci/pcib_if.m | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/sys/pci/pcib_if.m b/sys/pci/pcib_if.m new file mode 100644 index 0000000..b50df4b --- /dev/null +++ b/sys/pci/pcib_if.m @@ -0,0 +1,71 @@ +# +# Copyright (c) 2000 Doug Rabson +# All rights reserved. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# 1. Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# 2. Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in the +# documentation and/or other materials provided with the distribution. +# +# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND +# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE +# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +# SUCH DAMAGE. +# +# $FreeBSD$ +# + +#include <sys/bus.h> + +INTERFACE pcib; + +# +# Return the number of slots on the attached PCI bus. +# +METHOD int maxslots { + device_t dev; +}; + +# +# Read configuration space on the PCI bus. The bus, slot and func +# arguments determine the device which is being read and the reg +# argument is a byte offset into configuration space for that +# device. The width argument (which should be 1, 2 or 4) specifies how +# many byte of configuration space to read from that offset. +# +METHOD u_int32_t read_config { + device_t dev; + int bus; + int slot; + int func; + int reg; + int width; +}; + +# +# Write configuration space on the PCI bus. The bus, slot and func +# arguments determine the device which is being written and the reg +# argument is a byte offset into configuration space for that +# device. The value field is written to the configuration space, with +# the number of bytes written depending on the width argument. +# +METHOD void write_config { + device_t dev; + int bus; + int slot; + int func; + int reg; + u_int32_t value; + int width; +}; |