1 /* $NetBSD: dma_sbus.c,v 1.35 2009/09/17 16:28:12 tsutsui Exp $ */
2
3 /*-
4 * Copyright (c) 1998 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Paul Kranenburg.
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 /*
33 * Copyright (c) 1994 Peter Galbavy. All rights reserved.
34 *
35 * Redistribution and use in source and binary forms, with or without
36 * modification, are permitted provided that the following conditions
37 * are met:
38 * 1. Redistributions of source code must retain the above copyright
39 * notice, this list of conditions and the following disclaimer.
40 * 2. Redistributions in binary form must reproduce the above copyright
41 * notice, this list of conditions and the following disclaimer in the
42 * documentation and/or other materials provided with the distribution.
43 * 3. All advertising materials mentioning features or use of this software
44 * must display the following acknowledgement:
45 * This product includes software developed by Peter Galbavy.
46 * 4. The name of the author may not be used to endorse or promote products
47 * derived from this software without specific prior written permission.
48 *
49 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
50 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
51 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
52 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
53 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
54 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
55 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
56 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
57 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
58 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
59 */
60
61 #include <sys/cdefs.h>
62 __KERNEL_RCSID(0, "$NetBSD: dma_sbus.c,v 1.35 2009/09/17 16:28:12 tsutsui Exp $");
63
64 #include <sys/param.h>
65 #include <sys/systm.h>
66 #include <sys/kernel.h>
67 #include <sys/errno.h>
68 #include <sys/device.h>
69 #include <sys/malloc.h>
70
71 #include <sys/bus.h>
72 #include <sys/intr.h>
73 #include <machine/autoconf.h>
74
75 #include <dev/sbus/sbusvar.h>
76
77 #include <dev/ic/lsi64854reg.h>
78 #include <dev/ic/lsi64854var.h>
79
80 struct dma_softc {
81 struct lsi64854_softc sc_lsi64854; /* base device */
82 /* possible sbus specific stuff here */
83 };
84
85 int dmamatch_sbus(device_t, cfdata_t, void *);
86 void dmaattach_sbus(device_t, device_t, void *);
87
88 int dmaprint_sbus(void *, const char *);
89
90 void *dmabus_intr_establish(
91 bus_space_tag_t,
92 int, /*bus interrupt priority*/
93 int, /*`device class' level*/
94 int (*)(void *), /*handler*/
95 void *, /*handler arg*/
96 void (*) (void)); /*optional fast trap handler*/
97
98 CFATTACH_DECL_NEW(dma_sbus, sizeof(struct dma_softc),
99 dmamatch_sbus, dmaattach_sbus, NULL, NULL);
100
101 CFATTACH_DECL_NEW(ledma, sizeof(struct dma_softc),
102 dmamatch_sbus, dmaattach_sbus, NULL, NULL);
103
104 int
dmaprint_sbus(void * aux,const char * busname)105 dmaprint_sbus(void *aux, const char *busname)
106 {
107 struct sbus_attach_args *sa = aux;
108 bus_space_tag_t t = sa->sa_bustag;
109 struct dma_softc *sc = t->cookie;
110
111 sa->sa_bustag = sc->sc_lsi64854.sc_bustag; /* XXX */
112 sbus_print(aux, busname); /* XXX */
113 sa->sa_bustag = t; /* XXX */
114 return UNCONF;
115 }
116
117 int
dmamatch_sbus(device_t parent,cfdata_t cf,void * aux)118 dmamatch_sbus(device_t parent, cfdata_t cf, void *aux)
119 {
120 struct sbus_attach_args *sa = aux;
121
122 return strcmp(cf->cf_name, sa->sa_name) == 0 ||
123 strcmp("espdma", sa->sa_name) == 0;
124 }
125
126 void
dmaattach_sbus(device_t parent,device_t self,void * aux)127 dmaattach_sbus(device_t parent, device_t self, void *aux)
128 {
129 struct dma_softc *dsc = device_private(self);
130 struct lsi64854_softc *sc = &dsc->sc_lsi64854;
131 struct sbus_attach_args *sa = aux;
132 struct sbus_softc *sbsc = device_private(parent);
133 bus_space_tag_t sbt;
134 int sbusburst, burst;
135 int node;
136
137 node = sa->sa_node;
138
139 sc->sc_dev = self;
140 sc->sc_bustag = sa->sa_bustag;
141 sc->sc_dmatag = sa->sa_dmatag;
142
143 /* Map registers */
144 if (sa->sa_npromvaddrs) {
145 sbus_promaddr_to_handle(sa->sa_bustag,
146 sa->sa_promvaddrs[0], &sc->sc_regs);
147 } else {
148 if (sbus_bus_map(sa->sa_bustag,
149 sa->sa_slot, sa->sa_offset, sa->sa_size,
150 0, &sc->sc_regs) != 0) {
151 aprint_error(": cannot map registers\n");
152 return;
153 }
154 }
155
156 /*
157 * Get transfer burst size from PROM and plug it into the
158 * controller registers. This is needed on the Sun4m; do
159 * others need it too?
160 */
161 sbusburst = sbsc->sc_burst;
162 if (sbusburst == 0)
163 sbusburst = SBUS_BURST_32 - 1; /* 1->16 */
164
165 burst = prom_getpropint(node,"burst-sizes", -1);
166 if (burst == -1)
167 /* take SBus burst sizes */
168 burst = sbusburst;
169
170 /* Clamp at parent's burst sizes */
171 burst &= sbusburst;
172 sc->sc_burst = (burst & SBUS_BURST_32) ? 32 :
173 (burst & SBUS_BURST_16) ? 16 : 0;
174
175 if (device_is_a(self, "ledma")) {
176 char *cabletype;
177 uint32_t csr;
178 /*
179 * Check to see which cable type is currently active and
180 * set the appropriate bit in the ledma csr so that it
181 * gets used. If we didn't netboot, the PROM won't have
182 * the "cable-selection" property; default to TP and then
183 * the user can change it via a "media" option to ifconfig.
184 */
185 cabletype = prom_getpropstring(node, "cable-selection");
186 csr = L64854_GCSR(sc);
187 if (strcmp(cabletype, "tpe") == 0) {
188 csr |= E_TP_AUI;
189 } else if (strcmp(cabletype, "aui") == 0) {
190 csr &= ~E_TP_AUI;
191 } else {
192 /* assume TP if nothing there */
193 csr |= E_TP_AUI;
194 }
195 L64854_SCSR(sc, csr);
196 delay(20000); /* manual says we need a 20ms delay */
197 sc->sc_channel = L64854_CHANNEL_ENET;
198 } else {
199 sc->sc_channel = L64854_CHANNEL_SCSI;
200 }
201
202 if ((sbt = bus_space_tag_alloc(sc->sc_bustag, dsc)) == NULL) {
203 aprint_error(": out of memory\n");
204 return;
205 }
206 sbt->sparc_intr_establish = dmabus_intr_establish;
207 lsi64854_attach(sc);
208
209 /* Attach children */
210 for (node = firstchild(sa->sa_node); node; node = nextsibling(node)) {
211 struct sbus_attach_args sax;
212 sbus_setup_attach_args(sbsc, sbt, sc->sc_dmatag, node, &sax);
213 (void)config_found(self, (void *)&sax, dmaprint_sbus);
214 sbus_destroy_attach_args(&sax);
215 }
216 }
217
218 void *
dmabus_intr_establish(bus_space_tag_t t,int pri,int level,int (* handler)(void *),void * arg,void (* fastvec)(void))219 dmabus_intr_establish(bus_space_tag_t t, int pri, int level,
220 int (*handler)(void *), void *arg, void (*fastvec)(void))
221 {
222 struct lsi64854_softc *sc = t->cookie;
223
224 /* XXX - for now only le; do esp later */
225 if (sc->sc_channel == L64854_CHANNEL_ENET) {
226 sc->sc_intrchain = handler;
227 sc->sc_intrchainarg = arg;
228 handler = lsi64854_enet_intr;
229 arg = sc;
230 }
231 return bus_intr_establish(sc->sc_bustag, pri, level, handler, arg);
232 }
233