1 /* $NetBSD: hcide.c,v 1.27 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 * hcide.c - Driver for the HCCS 16-bit IDE interface.
31 */
32
33 #include <sys/cdefs.h>
34 __KERNEL_RCSID(0, "$NetBSD: hcide.c,v 1.27 2017/10/20 07:06:08 jdolecek Exp $");
35
36 #include <sys/param.h>
37
38 #include <sys/device.h>
39 #include <sys/systm.h>
40
41 #include <sys/bus.h>
42
43 #include <dev/podulebus/podulebus.h>
44 #include <dev/podulebus/podules.h>
45 #include <dev/podulebus/hcidereg.h>
46
47 #include <dev/ata/atavar.h>
48 #include <dev/ic/wdcreg.h>
49 #include <dev/ic/wdcvar.h>
50
51 struct hcide_softc {
52 struct wdc_softc sc_wdc;
53 struct ata_channel *sc_chp[HCIDE_NCHANNELS];/* pointers to sc_chan */
54 struct ata_channel sc_chan[HCIDE_NCHANNELS];
55 struct wdc_regs sc_wdc_regs[HCIDE_NCHANNELS];
56 };
57
58 static int hcide_match (device_t, cfdata_t, void *);
59 static void hcide_attach (device_t, device_t, void *);
60
61 CFATTACH_DECL_NEW(hcide, sizeof(struct hcide_softc),
62 hcide_match, hcide_attach, NULL, NULL);
63
64 static const int hcide_cmdoffsets[] = { HCIDE_CMD0, HCIDE_CMD1, HCIDE_CMD2 };
65 static const int hcide_ctloffsets[] = { HCIDE_CTL, HCIDE_CTL, HCIDE_CTL };
66
67 static int
hcide_match(device_t parent,cfdata_t cf,void * aux)68 hcide_match(device_t parent, cfdata_t cf, void *aux)
69 {
70 struct podulebus_attach_args *pa = aux;
71
72 if (pa->pa_product == PODULE_HCCS_IDESCSI &&
73 strncmp(pa->pa_descr, "IDE", 3) == 0)
74 return 1;
75 return 0;
76 }
77
78 static void
hcide_attach(device_t parent,device_t self,void * aux)79 hcide_attach(device_t parent, device_t self, void *aux)
80 {
81 struct hcide_softc *sc = device_private(self);
82 struct wdc_regs *wdr;
83 struct podulebus_attach_args *pa = aux;
84 struct ata_channel *ch;
85 int i, j;
86
87 sc->sc_wdc.sc_atac.atac_dev = self;
88 sc->sc_wdc.regs = sc->sc_wdc_regs;
89
90 sc->sc_wdc.sc_atac.atac_cap = ATAC_CAP_DATA16 | ATAC_CAP_NOIRQ;
91 sc->sc_wdc.sc_atac.atac_pio_cap = 0; /* XXX correct? */
92 sc->sc_wdc.sc_atac.atac_nchannels = HCIDE_NCHANNELS;
93 sc->sc_wdc.sc_atac.atac_channels = sc->sc_chp;
94 sc->sc_wdc.wdc_maxdrives = 2;
95 aprint_normal("\n");
96 for (i = 0; i < HCIDE_NCHANNELS; i++) {
97 ch = sc->sc_chp[i] = &sc->sc_chan[i];
98 wdr = &sc->sc_wdc_regs[i];
99 ch->ch_channel = i;
100 ch->ch_atac = &sc->sc_wdc.sc_atac;
101 wdr->cmd_iot = pa->pa_mod_t;
102 wdr->ctl_iot = pa->pa_mod_t;
103 bus_space_map(pa->pa_fast_t,
104 pa->pa_fast_base + hcide_cmdoffsets[i], 0, 8,
105 &wdr->cmd_baseioh);
106 for (j = 0; j < WDC_NREG; j++)
107 bus_space_subregion(wdr->cmd_iot, wdr->cmd_baseioh,
108 j, j == 0 ? 4 : 1, &wdr->cmd_iohs[j]);
109 wdc_init_shadow_regs(wdr);
110 bus_space_map(pa->pa_fast_t,
111 pa->pa_fast_base + hcide_ctloffsets[i], 0, 8,
112 &wdr->ctl_ioh);
113 wdcattach(ch);
114 }
115 }
116