1 /* $NetBSD: dtide.c,v 1.30 2017/10/20 07:06:08 jdolecek 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 1.30 2017/10/20 07:06:08 jdolecek 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 <sys/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 ata_channel *sc_chp[DTIDE_NCHANNELS];/* pointers to sc_chan */
55 struct ata_channel sc_chan[DTIDE_NCHANNELS];
56 struct wdc_regs sc_wdc_regs[DTIDE_NCHANNELS];
57 bus_space_tag_t sc_magict;
58 bus_space_handle_t sc_magich;
59 };
60
61 static int dtide_match(device_t, cfdata_t, void *);
62 static void dtide_attach(device_t, device_t, void *);
63
64 CFATTACH_DECL_NEW(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
dtide_match(device_t parent,cfdata_t cf,void * aux)71 dtide_match(device_t parent, cfdata_t 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
dtide_attach(device_t parent,device_t self,void * aux)79 dtide_attach(device_t parent, device_t self, void *aux)
80 {
81 struct podulebus_attach_args *pa = aux;
82 struct dtide_softc *sc = device_private(self);
83 struct wdc_regs *wdr;
84 struct ata_channel *ch;
85 int i, j;
86 bus_space_tag_t bst;
87
88 sc->sc_wdc.sc_atac.atac_dev = self;
89 sc->sc_wdc.regs = sc->sc_wdc_regs;
90
91 sc->sc_wdc.sc_atac.atac_cap = ATAC_CAP_DATA16 | ATAC_CAP_NOIRQ;
92 sc->sc_wdc.sc_atac.atac_pio_cap = 0; /* XXX correct? */
93 sc->sc_wdc.sc_atac.atac_nchannels = DTIDE_NCHANNELS;
94 sc->sc_wdc.sc_atac.atac_channels = sc->sc_chp;
95 sc->sc_wdc.wdc_maxdrives = 2;
96 sc->sc_magict = pa->pa_fast_t;
97 bus_space_map(pa->pa_fast_t, pa->pa_fast_base + DTIDE_MAGICBASE, 0, 1,
98 &sc->sc_magich);
99 podulebus_shift_tag(pa->pa_fast_t, DTIDE_REGSHIFT, &bst);
100 aprint_normal("\n");
101 for (i = 0; i < DTIDE_NCHANNELS; i++) {
102 ch = sc->sc_chp[i] = &sc->sc_chan[i];
103 wdr = &sc->sc_wdc_regs[i];
104 ch->ch_channel = i;
105 ch->ch_atac = &sc->sc_wdc.sc_atac;
106 wdr->cmd_iot = bst;
107 wdr->ctl_iot = bst;
108 bus_space_map(pa->pa_fast_t,
109 pa->pa_fast_base + dtide_cmdoffsets[i], 0, 8,
110 &wdr->cmd_baseioh);
111 for (j = 0; j < WDC_NREG; j++)
112 bus_space_subregion(wdr->cmd_iot, wdr->cmd_baseioh,
113 j, j == 0 ? 4 : 1, &wdr->cmd_iohs[j]);
114 wdc_init_shadow_regs(wdr);
115 bus_space_map(pa->pa_fast_t,
116 pa->pa_fast_base + dtide_ctloffsets[i], 0, 8,
117 &wdr->ctl_ioh);
118 wdcattach(ch);
119 }
120 }
121