1 /* $OpenBSD: dma_sbus.c,v 1.13 2006/06/02 20:00:56 miod Exp $ */
2 /* $NetBSD: dma_sbus.c,v 1.5 2000/07/09 20:57:42 pk Exp $ */
3
4 /*-
5 * Copyright (c) 1998 The NetBSD Foundation, Inc.
6 * All rights reserved.
7 *
8 * This code is derived from software contributed to The NetBSD Foundation
9 * by Paul Kranenburg.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. All advertising materials mentioning features or use of this software
20 * must display the following acknowledgement:
21 * This product includes software developed by the NetBSD
22 * Foundation, Inc. and its contributors.
23 * 4. Neither the name of The NetBSD Foundation nor the names of its
24 * contributors may be used to endorse or promote products derived
25 * from this software without specific prior written permission.
26 *
27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37 * POSSIBILITY OF SUCH DAMAGE.
38 */
39
40 /*
41 * Copyright (c) 1994 Peter Galbavy. All rights reserved.
42 *
43 * Redistribution and use in source and binary forms, with or without
44 * modification, are permitted provided that the following conditions
45 * are met:
46 * 1. Redistributions of source code must retain the above copyright
47 * notice, this list of conditions and the following disclaimer.
48 * 2. Redistributions in binary form must reproduce the above copyright
49 * notice, this list of conditions and the following disclaimer in the
50 * documentation and/or other materials provided with the distribution.
51 *
52 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
53 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
54 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
55 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
56 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
57 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
58 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
59 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
60 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
61 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
62 */
63
64 #include <sys/types.h>
65 #include <sys/param.h>
66 #include <sys/systm.h>
67 #include <sys/kernel.h>
68 #include <sys/errno.h>
69 #include <sys/device.h>
70 #include <sys/malloc.h>
71
72 #include <machine/bus.h>
73 #include <machine/intr.h>
74 #include <machine/autoconf.h>
75
76 #include <dev/sbus/sbusvar.h>
77
78 #include <dev/ic/lsi64854reg.h>
79 #include <dev/ic/lsi64854var.h>
80
81 #include <scsi/scsi_all.h>
82 #include <scsi/scsiconf.h>
83
84 #include <dev/ic/ncr53c9xreg.h>
85 #include <dev/ic/ncr53c9xvar.h>
86
87 struct dma_softc {
88 struct lsi64854_softc sc_lsi64854; /* base device */
89 };
90
91 int dmamatch_sbus(struct device *, void *, void *);
92 void dmaattach_sbus(struct device *, struct device *, void *);
93
94 int dmaprint_sbus(void *, const char *);
95
96 void *dmabus_intr_establish(
97 bus_space_tag_t,
98 bus_space_tag_t,
99 int, /*bus interrupt priority*/
100 int, /*`device class' level*/
101 int, /*flags*/
102 int (*)(void *), /*handler*/
103 void *, /*handler arg*/
104 const char *); /*what*/
105
106 static bus_space_tag_t dma_alloc_bustag(struct dma_softc *sc);
107
108 struct cfattach dma_sbus_ca = {
109 sizeof(struct dma_softc), dmamatch_sbus, dmaattach_sbus
110 };
111
112 struct cfattach ledma_ca = {
113 sizeof(struct dma_softc), dmamatch_sbus, dmaattach_sbus
114 };
115
116 struct cfdriver ledma_cd = {
117 NULL, "ledma", DV_DULL
118 };
119
120 struct cfdriver dma_cd = {
121 NULL, "dma", DV_DULL
122 };
123
124 int
125 dmaprint_sbus(void *aux, const char *busname)
126 {
127 struct sbus_attach_args *sa = aux;
128 bus_space_tag_t t = sa->sa_bustag;
129 struct dma_softc *sc = t->cookie;
130
131 sa->sa_bustag = sc->sc_lsi64854.sc_bustag; /* XXX */
132 sbus_print(aux, busname); /* XXX */
133 sa->sa_bustag = t; /* XXX */
134 return (UNCONF);
135 }
136
137 int
138 dmamatch_sbus(struct device *parent, void *vcf, void *aux)
139 {
140 struct cfdata *cf = vcf;
141 struct sbus_attach_args *sa = aux;
142
143 return (strcmp(cf->cf_driver->cd_name, sa->sa_name) == 0 ||
144 strcmp("espdma", sa->sa_name) == 0);
145 }
146
147 void
148 dmaattach_sbus(parent, self, aux)
149 struct device *parent, *self;
150 void *aux;
151 {
152 struct sbus_attach_args *sa = aux;
153 struct dma_softc *dsc = (void *)self;
154 struct lsi64854_softc *sc = &dsc->sc_lsi64854;
155 bus_space_handle_t bh;
156 bus_space_tag_t sbt;
157 int sbusburst, burst;
158 int node;
159
160 node = sa->sa_node;
161
162 sc->sc_bustag = sa->sa_bustag;
163 sc->sc_dmatag = sa->sa_dmatag;
164
165 /* Map registers */
166 if (sa->sa_npromvaddrs != 0) {
167 if (sbus_bus_map(sa->sa_bustag, 0,
168 sa->sa_promvaddrs[0],
169 sa->sa_size, /* ???? */
170 BUS_SPACE_MAP_PROMADDRESS,
171 0, &bh) != 0) {
172 printf("%s: cannot map registers\n", self->dv_xname);
173 return;
174 }
175 } else if (sbus_bus_map(sa->sa_bustag, sa->sa_slot,
176 sa->sa_offset,
177 sa->sa_size,
178 0, 0, &bh) != 0) {
179 printf("%s: cannot map registers\n", self->dv_xname);
180 return;
181 }
182 sc->sc_regs = bh;
183
184 /*
185 * Get transfer burst size from PROM and plug it into the
186 * controller registers. This is needed on the Sun4m; do
187 * others need it too?
188 */
189 sbusburst = ((struct sbus_softc *)parent)->sc_burst;
190 if (sbusburst == 0)
191 sbusburst = SBUS_BURST_32 - 1; /* 1->16 */
192
193 burst = getpropint(node,"burst-sizes", -1);
194 if (burst == -1)
195 /* take SBus burst sizes */
196 burst = sbusburst;
197
198 /* Clamp at parent's burst sizes */
199 burst &= sbusburst;
200 sc->sc_burst = (burst & SBUS_BURST_32) ? 32 :
201 (burst & SBUS_BURST_16) ? 16 : 0;
202
203 if (sc->sc_dev.dv_cfdata->cf_attach == &ledma_ca) {
204 char *cabletype;
205 u_int32_t csr;
206 /*
207 * Check to see which cable type is currently active and
208 * set the appropriate bit in the ledma csr so that it
209 * gets used. If we didn't netboot, the PROM won't have
210 * the "cable-selection" property; default to TP and then
211 * the user can change it via a "media" option to ifconfig.
212 */
213 cabletype = getpropstring(node, "cable-selection");
214 csr = L64854_GCSR(sc);
215 if (strcmp(cabletype, "tpe") == 0) {
216 csr |= E_TP_AUI;
217 } else if (strcmp(cabletype, "aui") == 0) {
218 csr &= ~E_TP_AUI;
219 } else {
220 /* assume TP if nothing there */
221 csr |= E_TP_AUI;
222 }
223 L64854_SCSR(sc, csr);
224 delay(20000); /* manual says we need a 20ms delay */
225 sc->sc_channel = L64854_CHANNEL_ENET;
226 } else {
227 sc->sc_channel = L64854_CHANNEL_SCSI;
228 }
229
230 sbt = dma_alloc_bustag(dsc);
231 if (lsi64854_attach(sc) != 0)
232 return;
233
234 /* Attach children */
235 for (node = firstchild(sa->sa_node); node; node = nextsibling(node)) {
236 struct sbus_attach_args sa;
237 sbus_setup_attach_args((struct sbus_softc *)parent,
238 sbt, sc->sc_dmatag, node, &sa);
239 (void) config_found(&sc->sc_dev, (void *)&sa, dmaprint_sbus);
240 sbus_destroy_attach_args(&sa);
241 }
242 }
243
244 void *
245 dmabus_intr_establish(
246 bus_space_tag_t t,
247 bus_space_tag_t t0,
248 int pri,
249 int level,
250 int flags,
251 int (*handler)(void *),
252 void *arg,
253 const char *what)
254 {
255 struct lsi64854_softc *sc = t->cookie;
256
257 /* XXX - for now only le; do esp later */
258 if (sc->sc_channel == L64854_CHANNEL_ENET) {
259 sc->sc_intrchain = handler;
260 sc->sc_intrchainarg = arg;
261 handler = lsi64854_enet_intr;
262 arg = sc;
263 }
264
265 for (t = t->parent; t; t = t->parent) {
266 if (t->sparc_intr_establish != NULL)
267 return ((*t->sparc_intr_establish)
268 (t, t0, pri, level, flags, handler, arg, what));
269
270 }
271
272 panic("dmabus_intr_establish: no handler found");
273
274 return (NULL);
275 }
276
277 bus_space_tag_t
278 dma_alloc_bustag(struct dma_softc *sc)
279 {
280 struct sparc_bus_space_tag *sbt;
281
282 sbt = malloc(sizeof(*sbt), M_DEVBUF, M_NOWAIT);
283 if (sbt == NULL)
284 return (NULL);
285
286 bzero(sbt, sizeof *sbt);
287 sbt->cookie = sc;
288 sbt->parent = sc->sc_lsi64854.sc_bustag;
289 sbt->asi = sbt->parent->asi;
290 sbt->sasi = sbt->parent->sasi;
291 sbt->sparc_intr_establish = dmabus_intr_establish;
292 return (sbt);
293 }