| /* |
| * 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__ |
