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)