1 /* $NetBSD: wdc_isapnp.c,v 1.45 2022/09/25 17:19:05 thorpej Exp $ */
2
3 /*-
4 * Copyright (c) 1998, 2003 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_isapnp.c,v 1.45 2022/09/25 17:19:05 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 <sys/intr.h>
41
42 #include <dev/isa/isavar.h>
43 #include <dev/isa/isadmavar.h>
44
45 #include <dev/isapnp/isapnpreg.h>
46 #include <dev/isapnp/isapnpvar.h>
47 #include <dev/isapnp/isapnpdevs.h>
48
49 #include <dev/ata/atavar.h>
50 #include <dev/ic/wdcreg.h>
51 #include <dev/ic/wdcvar.h>
52
53 struct wdc_isapnp_softc {
54 struct wdc_softc sc_wdcdev;
55 struct ata_channel *wdc_chanlist[1];
56 struct ata_channel ata_channel;
57 struct wdc_regs wdc_regs;
58 isa_chipset_tag_t sc_ic;
59 void *sc_ih;
60 int sc_drq;
61 };
62
63 static int wdc_isapnp_probe(device_t, cfdata_t, void *);
64 static void wdc_isapnp_attach(device_t, device_t, void *);
65
66 CFATTACH_DECL_NEW(wdc_isapnp, sizeof(struct wdc_isapnp_softc),
67 wdc_isapnp_probe, wdc_isapnp_attach, NULL, NULL);
68
69 #ifdef notyet
70 static void wdc_isapnp_dma_setup(struct wdc_isapnp_softc *);
71 static void wdc_isapnp_dma_start(void *, void *, size_t, int);
72 static void wdc_isapnp_dma_finish(void *);
73 #endif
74
75 static int
wdc_isapnp_probe(device_t parent,cfdata_t match,void * aux)76 wdc_isapnp_probe(device_t parent, cfdata_t match, void *aux)
77 {
78 int pri, variant;
79
80 pri = isapnp_devmatch(aux, &isapnp_wdc_devinfo, &variant);
81 if (pri && variant > 0)
82 pri = 0;
83 return (pri);
84 }
85
86 static void
wdc_isapnp_attach(device_t parent,device_t self,void * aux)87 wdc_isapnp_attach(device_t parent, device_t self, void *aux)
88 {
89 struct wdc_isapnp_softc *sc = device_private(self);
90 struct wdc_regs *wdr;
91 struct isapnp_attach_args *ipa = aux;
92 int i;
93
94 if (ipa->ipa_nio != 2 ||
95 ipa->ipa_nmem != 0 ||
96 ipa->ipa_nmem32 != 0 ||
97 ipa->ipa_nirq != 1 ||
98 ipa->ipa_ndrq > 1) {
99 aprint_error(": unexpected configuration\n");
100 return;
101 }
102
103 if (isapnp_config(ipa->ipa_iot, ipa->ipa_memt, ipa)) {
104 aprint_error(": couldn't map registers\n");
105 return;
106 }
107
108 aprint_normal(": %s %s\n", ipa->ipa_devident, ipa->ipa_devclass);
109
110 sc->sc_wdcdev.sc_atac.atac_dev = self;
111 sc->sc_wdcdev.regs = wdr = &sc->wdc_regs;
112 wdr->cmd_iot = ipa->ipa_iot;
113 wdr->ctl_iot = ipa->ipa_iot;
114 /*
115 * An IDE controller can feed us the regions in any order. Pass
116 * them along with the 8-byte region in sc_ad.ioh, and the other
117 * (2 byte) region in auxioh.
118 */
119 if (ipa->ipa_io[0].length == 8) {
120 wdr->cmd_baseioh = ipa->ipa_io[0].h;
121 wdr->ctl_ioh = ipa->ipa_io[1].h;
122 } else {
123 wdr->cmd_baseioh = ipa->ipa_io[1].h;
124 wdr->ctl_ioh = ipa->ipa_io[0].h;
125 }
126
127 for (i = 0; i < WDC_NREG; i++) {
128 if (bus_space_subregion(wdr->cmd_iot,
129 wdr->cmd_baseioh, i, i == 0 ? 4 : 1,
130 &wdr->cmd_iohs[i]) != 0) {
131 aprint_error(": couldn't subregion registers\n");
132 return;
133 }
134 }
135 wdr->data32iot = wdr->cmd_iot;
136 wdr->data32ioh = wdr->cmd_iohs[0];
137
138 sc->sc_ic = ipa->ipa_ic;
139 sc->sc_ih = isa_intr_establish(ipa->ipa_ic, ipa->ipa_irq[0].num,
140 ipa->ipa_irq[0].type, IPL_BIO, wdcintr, &sc->ata_channel);
141
142 #ifdef notyet
143 if (ipa->ipa_ndrq > 0) {
144 sc->sc_drq = ipa->ipa_drq[0].num;
145
146 sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DMA;
147 sc->sc_wdcdev.dma_start = &wdc_isapnp_dma_start;
148 sc->sc_wdcdev.dma_finish = &wdc_isapnp_dma_finish;
149 wdc_isapnp_dma_setup(sc);
150 }
151 #endif
152 sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DATA16 | ATAC_CAP_DATA32;
153 sc->sc_wdcdev.sc_atac.atac_pio_cap = 0;
154 sc->wdc_chanlist[0] = &sc->ata_channel;
155 sc->sc_wdcdev.sc_atac.atac_channels = sc->wdc_chanlist;
156 sc->sc_wdcdev.sc_atac.atac_nchannels = 1;
157 sc->sc_wdcdev.wdc_maxdrives = 2;
158 sc->ata_channel.ch_channel = 0;
159 sc->ata_channel.ch_atac = &sc->sc_wdcdev.sc_atac;
160
161 wdc_init_shadow_regs(wdr);
162
163 wdcattach(&sc->ata_channel);
164 }
165
166 #ifdef notyet
167 static void
wdc_isapnp_dma_setup(struct wdc_isapnp_softc * sc)168 wdc_isapnp_dma_setup(struct wdc_isapnp_softc *sc)
169 {
170
171 if (isa_dmamap_create(sc->sc_ic, sc->sc_drq,
172 MAXPHYS, BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW)) {
173 aprint_error_dev(sc->sc_wdcdev.sc_atac.atac_dev,
174 "can't create map for drq %d\n", sc->sc_drq);
175 sc->sc_wdcdev.sc_atac.atac_cap &= ~ATAC_CAP_DMA;
176 }
177 }
178
179 static void
wdc_isapnp_dma_start(void * scv,void * buf,size_t size,int read)180 wdc_isapnp_dma_start(void *scv, void *buf, size_t size, int read)
181 {
182 struct wdc_isapnp_softc *sc = scv;
183
184 isa_dmastart(sc->sc_ic, sc->sc_drq, buf, size, NULL,
185 (read ? DMAMODE_READ : DMAMODE_WRITE) | DMAMODE_DEMAND,
186 BUS_DMA_NOWAIT);
187 }
188
189 static void
wdc_isapnp_dma_finish(void * scv)190 wdc_isapnp_dma_finish(void *scv)
191 {
192 struct wdc_isapnp_softc *sc = scv;
193
194 isa_dmadone(sc->sc_ic, sc->sc_drq);
195 }
196 #endif
197