1 /* $NetBSD: wdc_obio.c,v 1.32 2022/08/20 20:02:22 tsutsui Exp $ */
2
3 /*
4 * Copyright (c) 2002 Takeshi Shibagaki All rights reserved.
5 *
6 * mac68k OBIO-IDE attachment created by Takeshi Shibagaki
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by Charles M. Hannum.
19 * 4. The name of the author may not be used to endorse or promote products
20 * derived from this software without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 */
33
34 #include <sys/cdefs.h>
35 __KERNEL_RCSID(0, "$NetBSD: wdc_obio.c,v 1.32 2022/08/20 20:02:22 tsutsui Exp $");
36
37 #include <sys/types.h>
38 #include <sys/param.h>
39 #include <sys/systm.h>
40 #include <sys/device.h>
41 #include <sys/kernel.h>
42 #include <sys/kmem.h>
43 #include <sys/callout.h>
44
45 #include <machine/bus.h>
46 #include <machine/intr.h>
47 #include <machine/cpu.h>
48 #include <machine/viareg.h>
49
50 #include <mac68k/obio/obiovar.h>
51
52 #include <dev/ata/atavar.h>
53 #include <dev/ic/wdcvar.h>
54
55 #define WDC_OBIO_REG_NPORTS 0x40
56 #define WDC_OBIO_AUXREG_OFFSET 0x38
57 #define WDC_OBIO_AUXREG_NPORTS 1
58 #define WDC_OBIO_ISR_OFFSET 0x101
59 #define WDC_OBIO_ISR_NPORTS 1
60
61 static u_long IDEBase = 0x50f1a000;
62
63 /*
64 * XXX This code currently doesn't even try to allow 32-bit data port use.
65 */
66
67 struct wdc_obio_softc {
68 struct wdc_softc sc_wdcdev;
69 struct ata_channel *sc_chanlist[1];
70 struct ata_channel sc_channel;
71 struct wdc_regs sc_wdc_regs;
72 void *sc_ih;
73 };
74
75 int wdc_obio_match(device_t, cfdata_t, void *);
76 void wdc_obio_attach(device_t, device_t, void *);
77 void wdc_obio_intr(void *);
78
79 CFATTACH_DECL_NEW(wdc_obio, sizeof(struct wdc_obio_softc),
80 wdc_obio_match, wdc_obio_attach, NULL, NULL);
81
82 static bus_space_tag_t wdc_obio_isr_tag;
83 static bus_space_handle_t wdc_obio_isr_hdl;
84 static struct ata_channel *ch_sc;
85
86 int
wdc_obio_match(device_t parent,cfdata_t match,void * aux)87 wdc_obio_match(device_t parent, cfdata_t match, void *aux)
88 {
89 struct obio_attach_args *oa = (struct obio_attach_args *) aux;
90 struct wdc_regs *wdr;
91 int i, result = 0;
92
93 wdr = kmem_alloc(sizeof(*wdr), KM_SLEEP);
94
95 switch (current_mac_model->machineid) {
96 case MACH_MACPB150:
97 case MACH_MACPB190:
98 case MACH_MACPB190CS:
99 case MACH_MACP580:
100 case MACH_MACQ630:
101 wdr->cmd_iot = wdr->ctl_iot = oa->oa_tag;
102
103 if (bus_space_map(wdr->cmd_iot, IDEBase, WDC_OBIO_REG_NPORTS,
104 0, &wdr->cmd_baseioh))
105 goto out;
106
107 mac68k_bus_space_handle_swapped(wdr->cmd_iot,
108 &wdr->cmd_baseioh);
109
110 for (i = 0; i < WDC_NREG; i++) {
111 if (bus_space_subregion(wdr->cmd_iot, wdr->cmd_baseioh,
112 i * 4, 4, &wdr->cmd_iohs[i]) != 0)
113 goto unmap;
114 }
115 wdc_init_shadow_regs(wdr);
116
117 if (bus_space_subregion(wdr->cmd_iot, wdr->cmd_baseioh,
118 WDC_OBIO_AUXREG_OFFSET, WDC_OBIO_AUXREG_NPORTS,
119 &wdr->ctl_ioh))
120 goto unmap;
121
122 result = wdcprobe(wdr);
123
124 unmap:
125 bus_space_unmap(wdr->cmd_iot, wdr->cmd_baseioh,
126 WDC_OBIO_REG_NPORTS);
127 }
128 out:
129 kmem_free(wdr, sizeof(*wdr));
130 return result;
131 }
132
133 void
wdc_obio_attach(device_t parent,device_t self,void * aux)134 wdc_obio_attach(device_t parent, device_t self, void *aux)
135 {
136 struct wdc_obio_softc *sc = device_private(self);
137 struct wdc_regs *wdr;
138 struct obio_attach_args *oa = aux;
139 struct ata_channel *chp = &sc->sc_channel;
140 int i;
141
142 sc->sc_wdcdev.sc_atac.atac_dev = self;
143 sc->sc_wdcdev.regs = wdr = &sc->sc_wdc_regs;
144
145 oa->oa_addr = IDEBase;
146 wdr->cmd_iot = wdr->ctl_iot = oa->oa_tag;
147
148 if (bus_space_map(wdr->cmd_iot, oa->oa_addr, WDC_OBIO_REG_NPORTS, 0,
149 &wdr->cmd_baseioh)) {
150 aprint_error(": couldn't map registers\n");
151 return;
152 }
153
154 mac68k_bus_space_handle_swapped(wdr->cmd_iot, &wdr->cmd_baseioh);
155
156 for (i = 0; i < WDC_NREG; i++) {
157 if (bus_space_subregion(wdr->cmd_iot, wdr->cmd_baseioh,
158 i * 4, 4, &wdr->cmd_iohs[i]) != 0) {
159 aprint_error(
160 ": unable to subregion control register\n");
161 goto err;
162 }
163 }
164
165 if (bus_space_subregion(wdr->cmd_iot, wdr->cmd_baseioh,
166 WDC_OBIO_AUXREG_OFFSET, WDC_OBIO_AUXREG_NPORTS, &wdr->ctl_ioh)) {
167 aprint_error(": unable to subregion aux register\n");
168 goto err;
169 }
170
171 wdc_obio_isr_tag = oa->oa_tag;
172
173 if (bus_space_map(wdc_obio_isr_tag, oa->oa_addr + WDC_OBIO_ISR_OFFSET,
174 WDC_OBIO_ISR_NPORTS, 0, &wdc_obio_isr_hdl)) {
175 aprint_error(": couldn't map intr status register\n");
176 goto err;
177 }
178
179 switch (current_mac_model->machineid) {
180 case MACH_MACP580:
181 case MACH_MACQ630:
182 /*
183 * Quadra/Performa IDE generates pseudo Nubus intr at slot F
184 */
185 aprint_normal(" (Quadra/Performa series IDE interface)");
186
187 add_nubus_intr(0xf, wdc_obio_intr, sc);
188
189 break;
190 case MACH_MACPB150:
191 case MACH_MACPB190:
192 case MACH_MACPB190CS:
193 /*
194 * PowerBook IDE generates pseudo NuBus intr at slot C
195 */
196 aprint_normal(" (PowerBook series IDE interface)");
197
198 add_nubus_intr(0xc, wdc_obio_intr, sc);
199
200 break;
201 }
202
203 ch_sc = chp;
204 if ((device_cfdata(self)->cf_flags & ATAC_CAP_NOIRQ) != 0)
205 sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_NOIRQ;
206 sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DATA16;
207 sc->sc_wdcdev.sc_atac.atac_pio_cap = 0;
208 sc->sc_chanlist[0] = chp;
209 sc->sc_wdcdev.sc_atac.atac_channels = sc->sc_chanlist;
210 sc->sc_wdcdev.sc_atac.atac_nchannels = 1;
211 sc->sc_wdcdev.wdc_maxdrives = 2;
212 chp->ch_channel = 0;
213 chp->ch_atac = &sc->sc_wdcdev.sc_atac;
214
215 wdc_init_shadow_regs(wdr);
216
217 aprint_normal("\n");
218
219 wdcattach(chp);
220 return;
221
222 err:
223 bus_space_unmap(wdr->cmd_iot, wdr->cmd_baseioh, WDC_OBIO_REG_NPORTS);
224 }
225
226 void
wdc_obio_intr(void * arg)227 wdc_obio_intr(void *arg)
228 {
229 uint8_t status;
230
231 status = bus_space_read_1(wdc_obio_isr_tag, wdc_obio_isr_hdl, 0);
232 if ((status & 0x20) != 0) {
233 wdcintr(ch_sc);
234 bus_space_write_1(wdc_obio_isr_tag, wdc_obio_isr_hdl, 0,
235 status & ~0x20);
236 }
237 }
238