1 /* $NetBSD: wdc_obio.c,v 1.12 2023/12/20 13:55:17 thorpej Exp $ */
2
3 /*-
4 * Copyright (c) 1998, 2003, 2005 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Charles M. Hannum and by Onno van der Linden.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #include <sys/cdefs.h>
33 __KERNEL_RCSID(0, "$NetBSD: wdc_obio.c,v 1.12 2023/12/20 13:55:17 thorpej Exp $");
34
35 #include <sys/param.h>
36 #include <sys/systm.h>
37 #include <sys/device.h>
38
39 #include <sys/bus.h>
40 #include <machine/intr.h>
41
42 #include <arm/xscale/i80321var.h>
43 #include <evbarm/iq80321/iq80321reg.h>
44 #include <evbarm/iq80321/obiovar.h>
45
46 #include <evbarm/iq31244/iq31244reg.h>
47
48 #include <dev/ic/wdcreg.h>
49 #include <dev/ata/atavar.h>
50 #include <dev/ic/wdcvar.h>
51
52 struct wdc_obio_softc {
53 struct wdc_softc sc_wdcdev;
54 struct ata_channel *wdc_chanlist[1];
55 struct ata_channel ata_channel;
56 struct wdc_regs wdc_regs;
57 void *sc_ih;
58 };
59
60 static int wdc_obio_probe(device_t, cfdata_t, void *);
61 static void wdc_obio_attach(device_t, device_t, void *);
62
63 CFATTACH_DECL_NEW(wdc_obio, sizeof(struct wdc_obio_softc),
64 wdc_obio_probe, wdc_obio_attach, NULL, NULL);
65
66 static int
wdc_obio_probe(device_t parent,cfdata_t match,void * aux)67 wdc_obio_probe(device_t parent, cfdata_t match, void *aux)
68 {
69 return 1;
70 }
71
72 static void
wdc_obio_attach(device_t parent,device_t self,void * aux)73 wdc_obio_attach(device_t parent, device_t self, void *aux)
74 {
75 struct wdc_obio_softc *sc = device_private(self);
76 struct wdc_regs *wdr;
77 struct obio_attach_args *oba = aux;
78 int i;
79
80 sc->sc_wdcdev.sc_atac.atac_dev = self;
81 sc->sc_wdcdev.regs = wdr = &sc->wdc_regs;
82 wdr->cmd_iot = oba->oba_st;
83 wdr->ctl_iot = oba->oba_st;
84 if (bus_space_map(wdr->cmd_iot, oba->oba_addr, IQ31244_CFLASH_SIZE,
85 0, &wdr->cmd_baseioh)) {
86 aprint_error(": couldn't map registers\n");
87 return;
88 }
89
90 for (i = 0; i < 8; i++) {
91 if (bus_space_subregion(wdr->cmd_iot, wdr->cmd_baseioh,
92 IQ31244_CFLASH_CMD_BASE + i, 1, &wdr->cmd_iohs[i]) != 0) {
93 aprint_error(": couldn't subregion registers\n");
94 return;
95 }
96 }
97
98 if (bus_space_subregion(wdr->ctl_iot, wdr->cmd_baseioh,
99 IQ31244_CFLASH_CTL_BASE, 1, &wdr->ctl_ioh) != 0) {
100 aprint_error(": couldn't subregion registers\n");
101 return;
102 }
103
104 sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DATA16;
105
106 sc->sc_wdcdev.sc_atac.atac_pio_cap = 0;
107 sc->wdc_chanlist[0] = &sc->ata_channel;
108 sc->sc_wdcdev.sc_atac.atac_channels = sc->wdc_chanlist;
109 sc->sc_wdcdev.sc_atac.atac_nchannels = 1;
110 sc->sc_wdcdev.wdc_maxdrives = 2;
111 sc->ata_channel.ch_channel = 0;
112 sc->ata_channel.ch_atac = &sc->sc_wdcdev.sc_atac;
113
114 wdc_init_shadow_regs(wdr);
115
116 aprint_normal("\n");
117
118 /*
119 * The interrupt line is controlled by a jumper. We can't detect
120 * this, except by allowing a request to time out, so assume that
121 * if the config file hasn't specified the IRQ, then the jumper isn't
122 * fitted.
123 */
124 if (oba->oba_irq != -1)
125 sc->sc_ih = i80321_intr_establish(oba->oba_irq, IPL_BIO,
126 wdcintr, &sc->ata_channel);
127 else {
128 sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_NOIRQ;
129 aprint_normal_dev(self, "Using polled I/O\n");
130 }
131
132 wdcattach(&sc->ata_channel);
133 }
134