1 /* $NetBSD: pciide.c,v 1.9 2015/07/11 10:32:45 kamil Exp $ */
2
3 /*-
4 * Copyright (c) 2003 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 #include <sys/types.h>
30 #include <lib/libsa/stand.h>
31 #include <mips/cpuregs.h>
32
33 #include "boot.h"
34 #include "wdvar.h"
35
36 #define COBALT_IO_SPACE_BASE 0x10000000 /* XXX VT82C586 ISA I/O space */
37
38 int
pciide_init(struct wdc_channel * chp,u_int * unit)39 pciide_init(struct wdc_channel *chp, u_int *unit)
40 {
41 uint32_t cmdreg, ctlreg;
42 int i, compatchan = 0;
43
44 /*
45 * two channels per chip, two drives per channel
46 */
47 compatchan = *unit / PCIIDE_CHANNEL_NDEV;
48 if (compatchan >= PCIIDE_NUM_CHANNELS)
49 return (ENXIO);
50 *unit %= PCIIDE_CHANNEL_NDEV;
51
52 DPRINTF(("[pciide] unit: %d, channel: %d\n", *unit, compatchan));
53
54 /*
55 * XXX map?
56 */
57 cmdreg = MIPS_PHYS_TO_KSEG1(COBALT_IO_SPACE_BASE +
58 PCIIDE_COMPAT_CMD_BASE(compatchan));
59 ctlreg = MIPS_PHYS_TO_KSEG1(COBALT_IO_SPACE_BASE +
60 PCIIDE_COMPAT_CTL_BASE(compatchan));
61
62 /* set up cmd registers */
63 chp->c_cmdbase = (uint8_t *)cmdreg;
64 chp->c_data = (uint16_t *)(cmdreg + wd_data);
65 for (i = 0; i < WDC_NPORTS; i++)
66 chp->c_cmdreg[i] = chp->c_cmdbase + i;
67 /* set up shadow registers */
68 chp->c_cmdreg[wd_status] = chp->c_cmdreg[wd_command];
69 chp->c_cmdreg[wd_features] = chp->c_cmdreg[wd_precomp];
70 /* set up ctl registers */
71 chp->c_ctlbase = (uint8_t *)ctlreg;
72
73 return 0;
74 }
75