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/*
* Copyright (c) 2001-2005 The Regents of The University of Michigan
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* 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;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT
* OWNER 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.
*
* Authors: Miguel Serrano
*/
/* @file
* Device register definitions for a device's PCI config space
*/
#ifndef __PITREG_H__
#define __PITREG_H__
#include <sys/types.h>
// Control Word Format
#define PIT_SEL_SHFT 0x6
#define PIT_RW_SHFT 0x4
#define PIT_MODE_SHFT 0x1
#define PIT_BCD_SHFT 0x0
#define PIT_SEL_MASK 0x3
#define PIT_RW_MASK 0x3
#define PIT_MODE_MASK 0x7
#define PIT_BCD_MASK 0x1
#define GET_CTRL_FIELD(x, s, m) (((x) >> s) & m)
#define GET_CTRL_SEL(x) GET_CTRL_FIELD(x, PIT_SEL_SHFT, PIT_SEL_MASK)
#define GET_CTRL_RW(x) GET_CTRL_FIELD(x, PIT_RW_SHFT, PIT_RW_MASK)
#define GET_CTRL_MODE(x) GET_CTRL_FIELD(x, PIT_MODE_SHFT, PIT_MODE_MASK)
#define GET_CTRL_BCD(x) GET_CTRL_FIELD(x, PIT_BCD_SHFT, PIT_BCD_MASK)
#define PIT_READ_BACK 0x3
#define PIT_RW_LATCH_COMMAND 0x0
#define PIT_RW_LSB_ONLY 0x1
#define PIT_RW_MSB_ONLY 0x2
#define PIT_RW_16BIT 0x3
#define PIT_MODE_INTTC 0x0
#define PIT_MODE_ONESHOT 0x1
#define PIT_MODE_RATEGEN 0x2
#define PIT_MODE_SQWAVE 0x3
#define PIT_MODE_SWSTROBE 0x4
#define PIT_MODE_HWSTROBE 0x5
#define PIT_BCD_FALSE 0x0
#define PIT_BCD_TRUE 0x1
#endif // __PITREG_H__
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