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Annotation of sys/dev/pci/pciide_ixp_reg.h, Revision 1.1.1.1

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)