freebsd-dev/sys/ia64/pci/pci_cfgreg.c

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/*-
* Copyright (c) 2001 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/param.h>
#include <machine/pci_cfgreg.h>
#include <machine/sal.h>
#define SAL_PCI_ADDRESS(bus, slot, func, reg) \
(((bus) << 16) | ((slot) << 11) | ((func) << 8) | (reg))
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int
pci_cfgregopen(void)
{
return 1;
}
u_int32_t
pci_cfgregread(int bus, int slot, int func, int reg, int bytes)
{
struct ia64_sal_result res;
res = ia64_sal_entry(SAL_PCI_CONFIG_READ,
SAL_PCI_ADDRESS(bus, slot, func, reg),
bytes, 0, 0, 0, 0, 0);
if (res.sal_status < 0)
return (~0);
else
return (res.sal_result[0]);
}
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void
pci_cfgregwrite(int bus, int slot, int func, int reg, u_int32_t data, int bytes)
{
struct ia64_sal_result res;
res = ia64_sal_entry(SAL_PCI_CONFIG_WRITE,
SAL_PCI_ADDRESS(bus, slot, func, reg),
bytes, data, 0, 0, 0, 0);
}