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Annotation of sys/dev/pci/pciide_ixp_reg.h, Revision 1.1

1.1     ! nbrk        1: /*     $OpenBSD: pciide_ixp_reg.h,v 1.1 2005/09/14 06:13:22 jsg Exp $  */
        !             2: /* $NetBSD: pciide_ixp_reg.h,v 1.2 2005/02/27 00:27:33 perry Exp $ */
        !             3:
        !             4: /*
        !             5:  *  Copyright (c) 2004 The NetBSD Foundation.
        !             6:  *  All rights reserved.
        !             7:  *
        !             8:  *  This code is derived from software contributed to the NetBSD Foundation
        !             9:  *  by Quentin Garnier.
        !            10:  *
        !            11:  *  Redistribution and use in source and binary forms, with or without
        !            12:  *  modification, are permitted provided that the following conditions
        !            13:  *  are met:
        !            14:  *  1. Redistributions of source code must retain the above copyright
        !            15:  *     notice, this list of conditions and the following disclaimer.
        !            16:  *  2. Redistributions in binary form must reproduce the above copyright
        !            17:  *     notice, this list of conditions and the following disclaimer in the
        !            18:  *     documentation and/or other materials provided with the distribution.
        !            19:  *  3. All advertising materials mentioning features or use of this software
        !            20:  *     must display the following acknowledgement:
        !            21:  *         This product includes software developed by the NetBSD
        !            22:  *         Foundation, Inc. and its contributors.
        !            23:  *  4. Neither the name of The NetBSD Foundation nor the names of its
        !            24:  *     contributors may be used to endorse or promote products derived
        !            25:  *     from this software without specific prior written permission.
        !            26:  *
        !            27:  *  THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
        !            28:  *  ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
        !            29:  *  TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
        !            30:  *  PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
        !            31:  *  BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
        !            32:  *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
        !            33:  *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
        !            34:  *  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
        !            35:  *  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
        !            36:  *  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
        !            37:  *  POSSIBILITY OF SUCH DAMAGE.
        !            38:  */
        !            39:
        !            40: /* All values gathered from the linux driver. */
        !            41:
        !            42: #define IXP_PIO_TIMING 0x40
        !            43: #define IXP_MDMA_TIMING        0x44
        !            44: #define IXP_PIO_CTL    0x48
        !            45: #define IXP_PIO_MODE   0x4a
        !            46: #define IXP_UDMA_CTL   0x54
        !            47: #define IXP_UDMA_MODE  0x56
        !            48:
        !            49: static const uint8_t ixp_pio_timings[] = {
        !            50:        0x5d, 0x47, 0x34, 0x22, 0x20
        !            51: };
        !            52:
        !            53: static const uint8_t ixp_mdma_timings[] = {
        !            54:        0x77, 0x21, 0x20
        !            55: };
        !            56:
        !            57: /* First 4 bits of UDMA_CTL enable or disable UDMA for the drive */
        !            58: #define IXP_UDMA_ENABLE(u, c, d)       do {    \
        !            59:        (u) |= (1 << (2 * (c) + (d)));          \
        !            60:     } while (0)
        !            61: #define IXP_UDMA_DISABLE(u, c, d)      do {    \
        !            62:        (u) &= ~(1 << (2 * (c) + (d)));         \
        !            63:     } while (0)
        !            64:
        !            65: /*
        !            66:  * UDMA_MODE has 4 bits per drive, though only 3 are actually used
        !            67:  * Note that in this macro u is the whole
        !            68:  * UDMA_CTL+UDMA_MODE register (32bits).
        !            69:  * PIO_MODE works just the same.
        !            70:  */
        !            71: #define IXP_SET_MODE(u, c, d, m)       do {    \
        !            72:        int __ixpshift = 16 + 8*(c) + 4*(d);    \
        !            73:        (u) &= ~(0x7 << __ixpshift);            \
        !            74:        (u) |= (((m) & 0x7) << __ixpshift);     \
        !            75:     } while (0)
        !            76:
        !            77: /*
        !            78:  * MDMA_TIMING has one byte per drive.
        !            79:  * PIO_TIMING works just the same.
        !            80:  */
        !            81: #define IXP_SET_TIMING(m, c, d, t)     do {    \
        !            82:         int __ixpshift = 16*(c) + 8*(d);       \
        !            83:        (m) &= ~(0xff << __ixpshift);           \
        !            84:        (m) |= ((t) & 0xff) << __ixpshift;      \
        !            85:     } while (0)