1 /* $NetBSD: wdc_ofisa.c,v 1.41 2022/09/25 17:29:22 thorpej Exp $ */
2
3 /*
4 * Copyright 1997, 1998
5 * Digital Equipment Corporation. All rights reserved.
6 *
7 * This software is furnished under license and may be used and
8 * copied only in accordance with the following terms and conditions.
9 * Subject to these conditions, you may download, copy, install,
10 * use, modify and distribute this software in source and/or binary
11 * form. No title or ownership is transferred hereby.
12 *
13 * 1) Any source code used, modified or distributed must reproduce
14 * and retain this copyright notice and list of conditions as
15 * they appear in the source file.
16 *
17 * 2) No right is granted to use any trade name, trademark, or logo of
18 * Digital Equipment Corporation. Neither the "Digital Equipment
19 * Corporation" name nor any trademark or logo of Digital Equipment
20 * Corporation may be used to endorse or promote products derived
21 * from this software without the prior written permission of
22 * Digital Equipment Corporation.
23 *
24 * 3) This software is provided "AS-IS" and any express or implied
25 * warranties, including but not limited to, any implied warranties
26 * of merchantability, fitness for a particular purpose, or
27 * non-infringement are disclaimed. In no event shall DIGITAL be
28 * liable for any damages whatsoever, and in particular, DIGITAL
29 * shall not be liable for special, indirect, consequential, or
30 * incidental damages or damages for lost profits, loss of
31 * revenue or loss of use, whether such damages arise in contract,
32 * negligence, tort, under statute, in equity, at law or otherwise,
33 * even if advised of the possibility of such damage.
34 */
35
36 /*
37 * OFW Attachment for 'wdc' disk controller driver
38 */
39
40 #include <sys/cdefs.h>
41 __KERNEL_RCSID(0, "$NetBSD: wdc_ofisa.c,v 1.41 2022/09/25 17:29:22 thorpej Exp $");
42
43 #include <sys/param.h>
44 #include <sys/device.h>
45 #include <sys/systm.h>
46 #include <sys/tty.h>
47
48 #include <sys/intr.h>
49 #include <sys/bus.h>
50
51 #include <dev/ofw/openfirm.h>
52 #include <dev/isa/isavar.h>
53 #include <dev/ofisa/ofisavar.h>
54
55 #include <dev/ic/wdcreg.h> /* ??? */
56 #include <dev/ata/atavar.h>
57 #include <dev/ic/wdcvar.h>
58
59 struct wdc_ofisa_softc {
60 struct wdc_softc sc_wdcdev;
61 struct ata_channel *sc_chanlist[1];
62 struct ata_channel sc_channel;
63 struct wdc_regs wdc_regs;
64 void *sc_ih;
65 };
66
67 static int wdc_ofisa_probe(device_t, cfdata_t, void *);
68 static void wdc_ofisa_attach(device_t, device_t, void *);
69
70 CFATTACH_DECL_NEW(wdc_ofisa, sizeof(struct wdc_ofisa_softc),
71 wdc_ofisa_probe, wdc_ofisa_attach, NULL, NULL);
72
73 static const struct device_compatible_entry compat_data[] = {
74 { .compat = "pnpPNP,600" },
75 DEVICE_COMPAT_EOL
76 };
77
78 static int
wdc_ofisa_probe(device_t parent,cfdata_t cf,void * aux)79 wdc_ofisa_probe(device_t parent, cfdata_t cf, void *aux)
80 {
81 struct ofisa_attach_args *aa = aux;
82 int rv;
83
84 rv = of_compatible_match(aa->oba.oba_phandle, compat_data) ? 5 : 0;
85 #ifdef _WDC_OFISA_MD_MATCH
86 if (!rv)
87 rv = wdc_ofisa_md_match(parent, cf, aux);
88 #endif
89 return (rv);
90 }
91
92 static void
wdc_ofisa_attach(device_t parent,device_t self,void * aux)93 wdc_ofisa_attach(device_t parent, device_t self, void *aux)
94 {
95 struct wdc_ofisa_softc *sc = device_private(self);
96 struct wdc_regs *wdr;
97 struct ofisa_attach_args *aa = aux;
98 struct ofisa_reg_desc reg[2];
99 struct ofisa_intr_desc intr;
100 int n;
101 bus_space_handle_t ioh;
102
103 /*
104 * We're living on an ofw. We have to ask the OFW what our
105 * registers and interrupts properties look like.
106 *
107 * We expect exactly two register regions and one interrupt.
108 */
109
110 sc->sc_wdcdev.sc_atac.atac_dev = self;
111 sc->sc_wdcdev.regs = wdr = &sc->wdc_regs;
112
113 n = ofisa_reg_get(aa->oba.oba_phandle, reg, 2);
114 #ifdef _WDC_OFISA_MD_REG_FIXUP
115 n = wdc_ofisa_md_reg_fixup(parent, self, aux, reg, 2, n);
116 #endif
117 if (n != 2) {
118 aprint_error(": error getting register data\n");
119 return;
120 }
121 if (reg[0].len != 8 || reg[1].len != 2) {
122 aprint_error(": weird register size (%lu/%lu, expected 8/2)\n",
123 (unsigned long)reg[0].len, (unsigned long)reg[1].len);
124 return;
125 }
126
127 n = ofisa_intr_get(aa->oba.oba_phandle, &intr, 1);
128 #ifdef _WDC_OFISA_MD_INTR_FIXUP
129 n = wdc_ofisa_md_intr_fixup(parent, self, aux, &intr, 1, n);
130 #endif
131 if (n != 1) {
132 aprint_error(": error getting interrupt data\n");
133 return;
134 }
135
136 wdr->cmd_iot = (reg[0].type == OFISA_REG_TYPE_IO) ? aa->iot : aa->memt;
137 wdr->ctl_iot = (reg[1].type == OFISA_REG_TYPE_IO) ? aa->iot : aa->memt;
138 if (bus_space_map(wdr->cmd_iot, reg[0].addr, 8, 0, &ioh) ||
139 bus_space_map(wdr->ctl_iot, reg[1].addr, 1, 0,
140 &wdr->ctl_ioh)) {
141 aprint_error(": can't map register spaces\n");
142 return;
143 }
144 wdr->cmd_baseioh = ioh;
145
146 for (n = 0; n < WDC_NREG; n++) {
147 if (bus_space_subregion(wdr->cmd_iot, ioh, n,
148 n == 0 ? 4 : 1, &wdr->cmd_iohs[n]) != 0) {
149 aprint_error(": can't subregion register space\n");
150 return;
151 }
152 }
153
154 sc->sc_ih = isa_intr_establish(aa->ic, intr.irq, intr.share,
155 IPL_BIO, wdcintr, &sc->sc_channel);
156
157 aprint_normal("\n");
158 sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DATA16;
159 sc->sc_chanlist[0] = &sc->sc_channel;
160 sc->sc_wdcdev.sc_atac.atac_channels = sc->sc_chanlist;
161 sc->sc_wdcdev.sc_atac.atac_nchannels = 1;
162 sc->sc_wdcdev.wdc_maxdrives = 2;
163 sc->sc_channel.ch_channel = 0;
164 sc->sc_channel.ch_atac = &sc->sc_wdcdev.sc_atac;
165
166 wdc_init_shadow_regs(wdr);
167
168 wdcattach(&sc->sc_channel);
169
170 #if 0
171 aprint_verbose_dev(self, "registers: ");
172 ofisa_reg_print(reg, 2);
173 aprint_verbose("\n");
174 aprint_verbose_dev(self, "interrupts: ");
175 ofisa_intr_print(&intr, 1);
176 aprint_verbose("\n");
177 #endif
178 }
179