1 /* $NetBSD: wdc_extio.c,v 1.13 2022/09/29 07:00:46 skrll Exp $ */
2
3 /*-
4 * Copyright (c) 2007 David Young. All rights reserved.
5 *
6 * CompactFlash attachment for RouterBoard 153. Derived from
7 * the NetBSD/mac68k OBIO-IDE attachment.
8 *
9 * Redistribution and use in source and binary forms, with or
10 * without modification, are permitted provided that the following
11 * conditions are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above
15 * copyright notice, this list of conditions and the following
16 * disclaimer in the documentation and/or other materials provided
17 * with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY
20 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
21 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
22 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
24 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
26 * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
28 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
29 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
30 * OF SUCH DAMAGE.
31 */
32 /*
33 * Copyright (c) 2002 Takeshi Shibagaki All rights reserved.
34 *
35 * mac68k OBIO-IDE attachment created by Takeshi Shibagaki
36 *
37 * Redistribution and use in source and binary forms, with or without
38 * modification, are permitted provided that the following conditions
39 * are met:
40 * 1. Redistributions of source code must retain the above copyright
41 * notice, this list of conditions and the following disclaimer.
42 * 2. Redistributions in binary form must reproduce the above copyright
43 * notice, this list of conditions and the following disclaimer in the
44 * documentation and/or other materials provided with the distribution.
45 * 3. All advertising materials mentioning features or use of this software
46 * must display the following acknowledgement:
47 * This product includes software developed by Charles M. Hannum.
48 * 4. The name of the author may not be used to endorse or promote products
49 * derived from this software without specific prior written permission.
50 *
51 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
52 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
53 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
54 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
55 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
56 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
57 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
58 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
59 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
60 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
61 */
62
63 #include <sys/cdefs.h>
64 __KERNEL_RCSID(0, "$NetBSD: wdc_extio.c,v 1.13 2022/09/29 07:00:46 skrll Exp $");
65
66 #include <sys/param.h>
67 #include <sys/bus.h>
68 #include <sys/callout.h>
69 #include <sys/cpu.h>
70 #include <sys/device.h>
71 #include <sys/intr.h>
72 #include <sys/kernel.h>
73 #include <sys/systm.h>
74
75 #include <mips/adm5120/include/adm5120_extiovar.h>
76
77 #include <dev/ata/atareg.h>
78 #include <dev/ata/atavar.h>
79 #include <dev/ic/wdcvar.h>
80
81 #ifdef WDC_EXTIO_DEBUG
82 int wdc_extio_debug = 1;
83 #define WDC_EXTIO_DPRINTF(__fmt, ...) \
84 do { \
85 if (wdc_extio_debug) \
86 printf((__fmt), __VA_ARGS__); \
87 } while (/*CONSTCOND*/0)
88 #else /* !WDC_EXTIO_DEBUG */
89 #define WDC_EXTIO_DPRINTF(__fmt, ...) do { } while (/*CONSTCOND*/0)
90 #endif /* WDC_EXTIO_DEBUG */
91
92 #define WDC_OBIO_CF_WINSIZE 0x1000
93 #define WDC_OBIO_REG_OFFSET 0x0800
94 #define WDC_OBIO_DATA_OFFSET 0x0808
95 #define WDC_OBIO_AUXREG_OFFSET 0x080e
96
97 struct wdc_extio_softc {
98 struct wdc_softc sc_wdcdev;
99 struct ata_channel *sc_chanlist[1];
100 struct ata_channel sc_channel;
101 struct wdc_regs sc_wdc_regs;
102 void *sc_gpio;
103 int sc_map;
104 struct gpio_pinmap sc_pinmap;
105 };
106
107 int wdc_extio_match(device_t, cfdata_t, void *);
108 void wdc_extio_attach(device_t, device_t, void *);
109
110 CFATTACH_DECL_NEW(wdc_extio, sizeof(struct wdc_extio_softc),
111 wdc_extio_match, wdc_extio_attach, NULL, NULL);
112
113 #if 0
114 void wdc_extio_reset(struct ata_channel *, int);
115 void
116 wdc_extio_reset(struct ata_channel *chp, int poll)
117 {
118 struct wdc_softc *wdc = CHAN_TO_WDC(chp);
119 struct wdc_regs *wdr = &wdc->regs[chp->ch_channel];
120 uint8_t st0;
121 int i, s = 0;
122
123 if (poll)
124 s = splbio();
125 if (wdc->select)
126 wdc->select(chp,0);
127 /* assert SRST, wait for reset to complete */
128 bus_space_write_1(wdr->ctl_iot, wdr->ctl_ioh, wd_aux_ctlr, WDCTL_RST);
129 delay(2000);
130 (void) bus_space_read_1(wdr->cmd_iot, wdr->cmd_iohs[wd_error], 0);
131 bus_space_write_1(wdr->ctl_iot, wdr->ctl_ioh, wd_aux_ctlr, 0);
132 delay(10); /* 400ns delay */
133 for (i = 3100000; --i > 0; ) {
134 st0 = bus_space_read_1(wdr->cmd_iot,
135 wdr->cmd_iohs[wd_status], 0);
136 if ((st0 & WDCS_BSY) == 0)
137 break;
138 delay(10);
139 }
140 if (i == 0)
141 printf("%s: reset failed\n", __func__);
142 else
143 WDC_EXTIO_DPRINTF("%s: reset in %d.%02dms\n", __func__,
144 (3100000 - i) / 100,
145 (3100000 - i) % 100);
146
147 if (poll) {
148 /* ACK interrupt in case there is one pending left */
149 if (wdc->irqack)
150 wdc->irqack(chp);
151 splx(s);
152 }
153 }
154 #endif
155
156 static int
wdc_extio_map(struct extio_attach_args * ea,struct wdc_regs * wdr,void ** gpio,struct gpio_pinmap * pinmap)157 wdc_extio_map(struct extio_attach_args *ea, struct wdc_regs *wdr,
158 void **gpio, struct gpio_pinmap *pinmap)
159 {
160 int i;
161
162 *gpio = ea->ea_gpio;
163 wdr->cmd_iot = wdr->ctl_iot = ea->ea_st;
164
165 #if 0
166 if (gpio_pin_map(ea->ea_gpio, 0, ea->ea_gpio_mask, pinmap) != 0) {
167 printf("%s: couldn't map GPIO\n", __func__);
168 return -1;
169 }
170 #endif
171
172 if (bus_space_map(wdr->cmd_iot, ea->ea_addr, WDC_OBIO_CF_WINSIZE, 0,
173 &wdr->cmd_baseioh)) {
174 aprint_error("%s: couldn't map registers\n", __func__);
175 goto post_gpio_err;
176 }
177
178 for (i = 1; i < WDC_NREG; i++) {
179 if (bus_space_subregion(wdr->cmd_iot, wdr->cmd_baseioh,
180 WDC_OBIO_REG_OFFSET + i, 1,
181 &wdr->cmd_iohs[i]) != 0) {
182 aprint_error(
183 "%s: unable to subregion control register\n",
184 __func__);
185 goto post_bus_err;
186 }
187 }
188 if (bus_space_subregion(wdr->cmd_iot, wdr->cmd_baseioh,
189 WDC_OBIO_DATA_OFFSET, 2,
190 &wdr->cmd_iohs[wd_data]) != 0) {
191 aprint_error("%s: unable to subregion data register\n",
192 __func__);
193 goto post_bus_err;
194 }
195 if (bus_space_subregion(wdr->cmd_iot, wdr->cmd_baseioh,
196 WDC_OBIO_AUXREG_OFFSET, 1, &wdr->ctl_ioh)) {
197 aprint_error("%s: unable to subregion aux register\n",
198 __func__);
199 goto post_bus_err;
200 }
201
202 wdc_init_shadow_regs(wdr);
203
204 return 0;
205 post_bus_err:
206 bus_space_unmap(wdr->cmd_iot, wdr->cmd_baseioh, WDC_OBIO_CF_WINSIZE);
207 post_gpio_err:
208 #if 0
209 gpio_pin_unmap(ea->ea_gpio, pinmap);
210 #endif
211 return -1;
212 }
213
214 static void
wdc_extio_dataout(struct ata_channel * chp,int flags,void * bf,size_t len)215 wdc_extio_dataout(struct ata_channel *chp, int flags, void *bf, size_t len)
216 {
217 struct wdc_regs *wdr = CHAN_TO_WDC_REGS(chp);
218
219 bus_space_write_multi_1(
220 wdr->cmd_iot, wdr->cmd_iohs[wd_data], 0, bf, len);
221 }
222
223 static void
wdc_extio_datain(struct ata_channel * chp,int flags,void * bf,size_t len)224 wdc_extio_datain(struct ata_channel *chp, int flags, void *bf, size_t len)
225 {
226 struct wdc_regs *wdr = CHAN_TO_WDC_REGS(chp);
227
228 bus_space_read_multi_1(
229 wdr->cmd_iot, wdr->cmd_iohs[wd_data], 0, bf, len);
230 }
231
232 int
wdc_extio_match(device_t parent,cfdata_t cf,void * aux)233 wdc_extio_match(device_t parent, cfdata_t cf, void *aux)
234 {
235 struct extio_attach_args *ea = (struct extio_attach_args *)aux;
236 struct wdc_regs wdr;
237 int result = 0;
238 void *gpio;
239 int map;
240 struct gpio_pinmap pm = {.pm_map = &map};
241
242 if (strcmp(ea->ea_name, cf->cf_name) != 0)
243 return 0;
244
245 WDC_EXTIO_DPRINTF("%s: enter\n", __func__);
246
247 #if 0
248 wdc.datain_pio = wdc_extio_datain;
249 wdc.dataout_pio = wdc_extio_dataout;
250 if (cf->cf_flags != -1) {
251 wdc.sc_atac.atac_cap |= cf->cf_flags &
252 (ATAC_CAP_NOIRQ|ATAC_CAP_DATA32|ATAC_CAP_DATA16);
253 wdc.cap |= cf->cf_flags &
254 (WDC_CAPABILITY_PREATA|WDC_CAPABILITY_NO_EXTRA_RESETS);
255 }
256 #endif
257
258 if (wdc_extio_map(ea, &wdr, &gpio, &pm) == -1)
259 return 0;
260
261 result = wdcprobe(&wdr);
262
263 bus_space_unmap(wdr.cmd_iot, wdr.cmd_baseioh, WDC_OBIO_CF_WINSIZE);
264 #if 0
265 gpio_pin_unmap(ea->ea_gpio, &pm);
266 #endif
267
268 return result;
269 }
270
271 void
wdc_extio_attach(device_t parent,device_t self,void * aux)272 wdc_extio_attach(device_t parent, device_t self, void *aux)
273 {
274 struct wdc_extio_softc *sc = device_private(self);
275 struct wdc_regs *wdr;
276 struct extio_attach_args *ea = aux;
277 struct ata_channel *chp = &sc->sc_channel;
278 struct cfdata *cf;
279
280 WDC_EXTIO_DPRINTF("%s: enter\n", __func__);
281
282 sc->sc_wdcdev.sc_atac.atac_dev = self;
283 sc->sc_pinmap.pm_map = &sc->sc_map;
284 sc->sc_wdcdev.regs = wdr = &sc->sc_wdc_regs;
285 chp->ch_atac = &sc->sc_wdcdev.sc_atac;
286
287 if (wdc_extio_map(ea, wdr, &sc->sc_gpio, &sc->sc_pinmap) == -1)
288 return;
289
290 cf = device_cfdata(sc->sc_wdcdev.sc_atac.atac_dev);
291 if (cf->cf_flags != -1) {
292 aprint_normal(" flags %04x", cf->cf_flags);
293 sc->sc_wdcdev.sc_atac.atac_cap |= cf->cf_flags &
294 (ATAC_CAP_NOIRQ|ATAC_CAP_DATA32|ATAC_CAP_DATA16);
295 sc->sc_wdcdev.cap |= cf->cf_flags &
296 (WDC_CAPABILITY_PREATA|WDC_CAPABILITY_NO_EXTRA_RESETS);
297 }
298 sc->sc_wdcdev.datain_pio = wdc_extio_datain;
299 sc->sc_wdcdev.dataout_pio = wdc_extio_dataout;
300 sc->sc_wdcdev.sc_atac.atac_pio_cap = 0;
301 sc->sc_chanlist[0] = chp;
302 sc->sc_wdcdev.sc_atac.atac_channels = sc->sc_chanlist;
303 sc->sc_wdcdev.sc_atac.atac_nchannels = 1;
304 sc->sc_wdcdev.wdc_maxdrives = 2;
305
306 chp->ch_channel = 0;
307 chp->ch_atac = &sc->sc_wdcdev.sc_atac;
308
309 aprint_normal("\n");
310
311 wdcattach(chp);
312 }
313