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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.
132 lines
3.5 KiB
C
132 lines
3.5 KiB
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/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/kobj.h>
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#include <machine/bus.h>
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#include <machine/bwx.h>
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static u_int8_t
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bwx_read_1(struct alpha_busspace *space, size_t offset)
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{
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struct bwx_space *bwx = (struct bwx_space *) space;
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alpha_mb();
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return ldbu(bwx->base + offset);
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}
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static u_int16_t
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bwx_read_2(struct alpha_busspace *space, size_t offset)
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{
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struct bwx_space *bwx = (struct bwx_space *) space;
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alpha_mb();
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return ldwu(bwx->base + offset);
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}
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static u_int32_t
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bwx_read_4(struct alpha_busspace *space, size_t offset)
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{
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struct bwx_space *bwx = (struct bwx_space *) space;
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alpha_mb();
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return ldl(bwx->base + offset);
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}
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static void
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bwx_write_1(struct alpha_busspace *space, size_t offset, u_int8_t data)
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{
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struct bwx_space *bwx = (struct bwx_space *) space;
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stb(bwx->base + offset, data);
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alpha_mb();
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}
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static void
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bwx_write_2(struct alpha_busspace *space, size_t offset, u_int16_t data)
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{
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struct bwx_space *bwx = (struct bwx_space *) space;
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stw(bwx->base + offset, data);
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alpha_mb();
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}
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static void
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bwx_write_4(struct alpha_busspace *space, size_t offset, u_int32_t data)
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{
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struct bwx_space *bwx = (struct bwx_space *) space;
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stl(bwx->base + offset, data);
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alpha_mb();
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}
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static struct alpha_busspace_ops bwx_space_ops = {
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bwx_read_1,
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bwx_read_2,
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bwx_read_4,
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busspace_generic_read_multi_1,
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busspace_generic_read_multi_2,
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busspace_generic_read_multi_4,
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busspace_generic_read_region_1,
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busspace_generic_read_region_2,
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busspace_generic_read_region_4,
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bwx_write_1,
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bwx_write_2,
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bwx_write_4,
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busspace_generic_write_multi_1,
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busspace_generic_write_multi_2,
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busspace_generic_write_multi_4,
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busspace_generic_write_region_1,
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busspace_generic_write_region_2,
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busspace_generic_write_region_4,
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busspace_generic_set_multi_1,
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busspace_generic_set_multi_2,
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busspace_generic_set_multi_4,
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busspace_generic_set_region_1,
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busspace_generic_set_region_2,
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busspace_generic_set_region_4,
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busspace_generic_copy_region_1,
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busspace_generic_copy_region_2,
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busspace_generic_copy_region_4,
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busspace_generic_barrier,
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};
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void
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bwx_init_space(struct bwx_space *bwx, u_int64_t base)
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{
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bwx->ops = &bwx_space_ops;
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bwx->base = base;
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}
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