1 /* $NetBSD: dtide.c,v 1.15 2004/01/03 22:56:53 thorpej Exp $ */
2
3 /*-
4 * Copyright (c) 2000, 2001 Ben Harris
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 * 3. The name of the author may not be used to endorse or promote products
16 * derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29 /*
30 * dtide.c - Driver for the D.T. Software IDE interface.
31 */
32
33 #include <sys/cdefs.h>
34 __KERNEL_RCSID(0, "$NetBSD: dtide.c,v 1.15 2004/01/03 22:56:53 thorpej Exp $");
35
36 #include <sys/param.h>
37
38 #include <sys/device.h>
39 #include <sys/malloc.h>
40 #include <sys/systm.h>
41
42 #include <machine/bus.h>
43
44 #include <dev/podulebus/podulebus.h>
45 #include <dev/podulebus/podules.h>
46 #include <dev/podulebus/dtidereg.h>
47
48 #include <dev/ic/wdcreg.h>
49 #include <dev/ata/atavar.h>
50 #include <dev/ic/wdcvar.h>
51
52 struct dtide_softc {
53 struct wdc_softc sc_wdc;
54 struct wdc_channel *sc_chp[DTIDE_NCHANNELS];/* pointers to sc_chan */
55 struct wdc_channel sc_chan[DTIDE_NCHANNELS];
56 struct ata_queue sc_chq[DTIDE_NCHANNELS];
57 bus_space_tag_t sc_magict;
58 bus_space_handle_t sc_magich;
59 };
60
61 static int dtide_match(struct device *, struct cfdata *, void *);
62 static void dtide_attach(struct device *, struct device *, void *);
63
64 CFATTACH_DECL(dtide, sizeof(struct dtide_softc),
65 dtide_match, dtide_attach, NULL, NULL);
66
67 static const int dtide_cmdoffsets[] = { DTIDE_CMDBASE0, DTIDE_CMDBASE1 };
68 static const int dtide_ctloffsets[] = { DTIDE_CTLBASE0, DTIDE_CTLBASE1 };
69
70 static int
71 dtide_match(struct device *parent, struct cfdata *cf, void *aux)
72 {
73 struct podulebus_attach_args *pa = aux;
74
75 return pa->pa_product == PODULE_DTSOFT_IDE;
76 }
77
78 static void
79 dtide_attach(struct device *parent, struct device *self, void *aux)
80 {
81 struct podulebus_attach_args *pa = aux;
82 struct dtide_softc *sc = (void *)self;
83 struct wdc_channel *ch;
84 int i, j;
85 bus_space_tag_t bst;
86
87 sc->sc_wdc.cap = WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_NOIRQ;
88 sc->sc_wdc.PIO_cap = 0; /* XXX correct? */
89 sc->sc_wdc.DMA_cap = 0; /* XXX correct? */
90 sc->sc_wdc.UDMA_cap = 0;
91 sc->sc_wdc.nchannels = DTIDE_NCHANNELS;
92 sc->sc_wdc.channels = sc->sc_chp;
93 sc->sc_magict = pa->pa_fast_t;
94 bus_space_map(pa->pa_fast_t, pa->pa_fast_base + DTIDE_MAGICBASE, 0, 1,
95 &sc->sc_magich);
96 podulebus_shift_tag(pa->pa_fast_t, DTIDE_REGSHIFT, &bst);
97 printf("\n");
98 for (i = 0; i < DTIDE_NCHANNELS; i++) {
99 ch = sc->sc_chp[i] = &sc->sc_chan[i];
100 ch->ch_channel = i;
101 ch->ch_wdc = &sc->sc_wdc;
102 ch->cmd_iot = bst;
103 ch->ctl_iot = bst;
104 ch->ch_queue = &sc->sc_chq[i];
105 bus_space_map(pa->pa_fast_t,
106 pa->pa_fast_base + dtide_cmdoffsets[i], 0, 8,
107 &ch->cmd_baseioh);
108 for (j = 0; j < WDC_NREG; j++)
109 bus_space_subregion(ch->cmd_iot, ch->cmd_baseioh,
110 j, j == 0 ? 4 : 1, &ch->cmd_iohs[j]);
111 bus_space_map(pa->pa_fast_t,
112 pa->pa_fast_base + dtide_ctloffsets[i], 0, 8,
113 &ch->ctl_ioh);
114 wdcattach(ch);
115 }
116
117 }
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