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)
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