1 /* $OpenBSD: dma_sbus.c,v 1.16 2008/06/26 05:42:18 ray Exp $ */
2 /* $NetBSD: dma_sbus.c,v 1.32 2008/04/28 20:23:57 martin Exp $ */
3
4 /*-
5 * SPDX-License-Identifier: BSD-2-Clause-NetBSD AND BSD-2-Clause-FreeBSD
6 *
7 * Copyright (c) 1998 The NetBSD Foundation, Inc.
8 * All rights reserved.
9 *
10 * This code is derived from software contributed to The NetBSD Foundation
11 * by Paul Kranenburg.
12 *
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
15 * are met:
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
23 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
24 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
25 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
26 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
32 * POSSIBILITY OF SUCH DAMAGE.
33 */
34
35 /*-
36 * Copyright (c) 1994 Peter Galbavy. All rights reserved.
37 * Copyright (c) 2005 Marius Strobl <marius@FreeBSD.org>. All rights reserved.
38 *
39 * Redistribution and use in source and binary forms, with or without
40 * modification, are permitted provided that the following conditions
41 * are met:
42 * 1. Redistributions of source code must retain the above copyright
43 * notice, this list of conditions and the following disclaimer.
44 * 2. Redistributions in binary form must reproduce the above copyright
45 * notice, this list of conditions and the following disclaimer in the
46 * documentation and/or other materials provided with the distribution.
47 *
48 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
49 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
50 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
51 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
52 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
53 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
54 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
55 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
56 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
57 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
58 */
59
60 #include <sys/cdefs.h>
61 __FBSDID("$FreeBSD$");
62
63 #include <sys/param.h>
64 #include <sys/systm.h>
65 #include <sys/bus.h>
66 #include <sys/kernel.h>
67 #include <sys/module.h>
68 #include <sys/rman.h>
69
70 #include <dev/ofw/ofw_bus.h>
71 #include <dev/ofw/ofw_bus_subr.h>
72 #include <dev/ofw/openfirm.h>
73
74 #include <machine/bus.h>
75 #include <machine/bus_common.h>
76 #include <machine/resource.h>
77
78 #include <sparc64/sbus/lsi64854reg.h>
79 #include <sparc64/sbus/lsi64854var.h>
80 #include <sparc64/sbus/ofw_sbus.h>
81 #include <sparc64/sbus/sbusreg.h>
82 #include <sparc64/sbus/sbusvar.h>
83
84 struct dma_devinfo {
85 struct ofw_bus_devinfo ddi_obdinfo;
86 struct resource_list ddi_rl;
87 };
88
89 struct dma_softc {
90 struct lsi64854_softc sc_lsi64854; /* base device */
91 int sc_ign;
92 int sc_slot;
93 };
94
95 static devclass_t dma_devclass;
96
97 static device_probe_t dma_probe;
98 static device_attach_t dma_attach;
99 static bus_print_child_t dma_print_child;
100 static bus_probe_nomatch_t dma_probe_nomatch;
101 static bus_get_resource_list_t dma_get_resource_list;
102 static ofw_bus_get_devinfo_t dma_get_devinfo;
103
104 static struct dma_devinfo *dma_setup_dinfo(device_t, struct dma_softc *,
105 phandle_t);
106 static void dma_destroy_dinfo(struct dma_devinfo *);
107 static int dma_print_res(struct dma_devinfo *);
108
109 static device_method_t dma_methods[] = {
110 /* Device interface */
111 DEVMETHOD(device_probe, dma_probe),
112 DEVMETHOD(device_attach, dma_attach),
113 DEVMETHOD(device_shutdown, bus_generic_shutdown),
114 DEVMETHOD(device_suspend, bus_generic_suspend),
115 DEVMETHOD(device_resume, bus_generic_resume),
116
117 /* Bus interface */
118 DEVMETHOD(bus_print_child, dma_print_child),
119 DEVMETHOD(bus_probe_nomatch, dma_probe_nomatch),
120 DEVMETHOD(bus_alloc_resource, bus_generic_rl_alloc_resource),
121 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
122 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
123 DEVMETHOD(bus_adjust_resource, bus_generic_adjust_resource),
124 DEVMETHOD(bus_release_resource, bus_generic_rl_release_resource),
125 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
126 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
127 DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource),
128 DEVMETHOD(bus_get_resource_list, dma_get_resource_list),
129 DEVMETHOD(bus_child_pnpinfo_str, ofw_bus_gen_child_pnpinfo_str),
130
131 /* ofw_bus interface */
132 DEVMETHOD(ofw_bus_get_devinfo, dma_get_devinfo),
133 DEVMETHOD(ofw_bus_get_compat, ofw_bus_gen_get_compat),
134 DEVMETHOD(ofw_bus_get_model, ofw_bus_gen_get_model),
135 DEVMETHOD(ofw_bus_get_name, ofw_bus_gen_get_name),
136 DEVMETHOD(ofw_bus_get_node, ofw_bus_gen_get_node),
137 DEVMETHOD(ofw_bus_get_type, ofw_bus_gen_get_type),
138
139 DEVMETHOD_END
140 };
141
142 static driver_t dma_driver = {
143 "dma",
144 dma_methods,
145 sizeof(struct dma_softc),
146 };
147
148 /*
149 * The probe order is handled by sbus(4) as we don't want the variants
150 * with children to be attached earlier than the stand-alone controllers
151 * in order to generally preserve the OFW device tree order.
152 */
153 EARLY_DRIVER_MODULE(dma, sbus, dma_driver, dma_devclass, 0, 0,
154 BUS_PASS_DEFAULT);
155 MODULE_DEPEND(dma, sbus, 1, 1, 1);
156 MODULE_VERSION(dma, 1);
157
158 static int
159 dma_probe(device_t dev)
160 {
161 const char *name;
162
163 name = ofw_bus_get_name(dev);
164 if (strcmp(name, "espdma") == 0 || strcmp(name, "dma") == 0 ||
165 strcmp(name, "ledma") == 0) {
166 device_set_desc_copy(dev, name);
167 return (0);
168 }
169 return (ENXIO);
170 }
171
172 static int
173 dma_attach(device_t dev)
174 {
175 struct dma_softc *dsc;
176 struct lsi64854_softc *lsc;
177 struct dma_devinfo *ddi;
178 device_t cdev;
179 const char *name;
180 char *cabletype;
181 uint32_t csr;
182 phandle_t child, node;
183 int error, i;
184
185 dsc = device_get_softc(dev);
186 lsc = &dsc->sc_lsi64854;
187
188 name = ofw_bus_get_name(dev);
189 node = ofw_bus_get_node(dev);
190 dsc->sc_ign = sbus_get_ign(dev);
191 dsc->sc_slot = sbus_get_slot(dev);
192
193 i = 0;
194 lsc->sc_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &i,
195 RF_ACTIVE);
196 if (lsc->sc_res == NULL) {
197 device_printf(dev, "cannot allocate resources\n");
198 return (ENXIO);
199 }
200
201 if (strcmp(name, "espdma") == 0 || strcmp(name, "dma") == 0)
202 lsc->sc_channel = L64854_CHANNEL_SCSI;
203 else if (strcmp(name, "ledma") == 0) {
204 /*
205 * Check to see which cable type is currently active and
206 * set the appropriate bit in the ledma csr so that it
207 * gets used. If we didn't netboot, the PROM won't have
208 * the "cable-selection" property; default to TP and then
209 * the user can change it via a "media" option to ifconfig.
210 */
211 csr = L64854_GCSR(lsc);
212 if ((OF_getprop_alloc(node, "cable-selection",
213 (void **)&cabletype)) == -1) {
214 /* assume TP if nothing there */
215 csr |= E_TP_AUI;
216 } else {
217 if (strcmp(cabletype, "aui") == 0)
218 csr &= ~E_TP_AUI;
219 else
220 csr |= E_TP_AUI;
221 OF_prop_free(cabletype);
222 }
223 L64854_SCSR(lsc, csr);
224 DELAY(20000); /* manual says we need a 20ms delay */
225 lsc->sc_channel = L64854_CHANNEL_ENET;
226 } else {
227 device_printf(dev, "unsupported DMA channel\n");
228 error = ENXIO;
229 goto fail_lres;
230 }
231
232 error = bus_dma_tag_create(
233 bus_get_dma_tag(dev), /* parent */
234 1, 0, /* alignment, boundary */
235 BUS_SPACE_MAXADDR, /* lowaddr */
236 BUS_SPACE_MAXADDR, /* highaddr */
237 NULL, NULL, /* filter, filterarg */
238 BUS_SPACE_MAXSIZE, /* maxsize */
239 BUS_SPACE_UNRESTRICTED, /* nsegments */
240 BUS_SPACE_MAXSIZE, /* maxsegsize */
241 0, /* flags */
242 NULL, NULL, /* no locking */
243 &lsc->sc_parent_dmat);
244 if (error != 0) {
245 device_printf(dev, "cannot allocate parent DMA tag\n");
246 goto fail_lres;
247 }
248
249 i = sbus_get_burstsz(dev);
250 lsc->sc_burst = (i & SBUS_BURST_32) ? 32 :
251 (i & SBUS_BURST_16) ? 16 : 0;
252 lsc->sc_dev = dev;
253
254 /* Attach children. */
255 i = 0;
256 for (child = OF_child(node); child != 0; child = OF_peer(child)) {
257 if ((ddi = dma_setup_dinfo(dev, dsc, child)) == NULL)
258 continue;
259 if (i != 0) {
260 device_printf(dev,
261 "<%s>: only one child per DMA channel supported\n",
262 ddi->ddi_obdinfo.obd_name);
263 dma_destroy_dinfo(ddi);
264 continue;
265 }
266 if ((cdev = device_add_child(dev, NULL, -1)) == NULL) {
267 device_printf(dev, "<%s>: device_add_child failed\n",
268 ddi->ddi_obdinfo.obd_name);
269 dma_destroy_dinfo(ddi);
270 continue;
271 }
272 device_set_ivars(cdev, ddi);
273 i++;
274 }
275 return (bus_generic_attach(dev));
276
277 fail_lres:
278 bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(lsc->sc_res),
279 lsc->sc_res);
280 return (error);
281 }
282
283 static struct dma_devinfo *
284 dma_setup_dinfo(device_t dev, struct dma_softc *dsc, phandle_t node)
285 {
286 struct dma_devinfo *ddi;
287 struct sbus_regs *reg;
288 uint32_t base, iv, *intr;
289 int i, nreg, nintr, slot, rslot;
290
291 ddi = malloc(sizeof(*ddi), M_DEVBUF, M_WAITOK | M_ZERO);
292 if (ofw_bus_gen_setup_devinfo(&ddi->ddi_obdinfo, node) != 0) {
293 free(ddi, M_DEVBUF);
294 return (NULL);
295 }
296 resource_list_init(&ddi->ddi_rl);
297 slot = -1;
298 nreg = OF_getprop_alloc_multi(node, "reg", sizeof(*reg), (void **)®);
299 if (nreg == -1) {
300 device_printf(dev, "<%s>: incomplete\n",
301 ddi->ddi_obdinfo.obd_name);
302 goto fail;
303 }
304 for (i = 0; i < nreg; i++) {
305 base = reg[i].sbr_offset;
306 if (SBUS_ABS(base)) {
307 rslot = SBUS_ABS_TO_SLOT(base);
308 base = SBUS_ABS_TO_OFFSET(base);
309 } else
310 rslot = reg[i].sbr_slot;
311 if (slot != -1 && slot != rslot) {
312 device_printf(dev, "<%s>: multiple slots\n",
313 ddi->ddi_obdinfo.obd_name);
314 OF_prop_free(reg);
315 goto fail;
316 }
317 slot = rslot;
318
319 resource_list_add(&ddi->ddi_rl, SYS_RES_MEMORY, i, base,
320 base + reg[i].sbr_size, reg[i].sbr_size);
321 }
322 OF_prop_free(reg);
323 if (slot != dsc->sc_slot) {
324 device_printf(dev, "<%s>: parent and child slot do not match\n",
325 ddi->ddi_obdinfo.obd_name);
326 goto fail;
327 }
328
329 /*
330 * The `interrupts' property contains the SBus interrupt level.
331 */
332 nintr = OF_getprop_alloc_multi(node, "interrupts", sizeof(*intr),
333 (void **)&intr);
334 if (nintr != -1) {
335 for (i = 0; i < nintr; i++) {
336 iv = intr[i];
337 /*
338 * SBus card devices need the slot number encoded into
339 * the vector as this is generally not done.
340 */
341 if ((iv & INTMAP_OBIO_MASK) == 0)
342 iv |= slot << 3;
343 /* Set the IGN as appropriate. */
344 iv |= dsc->sc_ign << INTMAP_IGN_SHIFT;
345 resource_list_add(&ddi->ddi_rl, SYS_RES_IRQ, i,
346 iv, iv, 1);
347 }
348 OF_prop_free(intr);
349 }
350 return (ddi);
351
352 fail:
353 dma_destroy_dinfo(ddi);
354 return (NULL);
355 }
356
357 static void
358 dma_destroy_dinfo(struct dma_devinfo *dinfo)
359 {
360
361 resource_list_free(&dinfo->ddi_rl);
362 ofw_bus_gen_destroy_devinfo(&dinfo->ddi_obdinfo);
363 free(dinfo, M_DEVBUF);
364 }
365
366 static int
367 dma_print_child(device_t dev, device_t child)
368 {
369 int rv;
370
371 rv = bus_print_child_header(dev, child);
372 rv += dma_print_res(device_get_ivars(child));
373 rv += bus_print_child_footer(dev, child);
374 return (rv);
375 }
376
377 static void
378 dma_probe_nomatch(device_t dev, device_t child)
379 {
380 const char *type;
381
382 device_printf(dev, "<%s>", ofw_bus_get_name(child));
383 dma_print_res(device_get_ivars(child));
384 type = ofw_bus_get_type(child);
385 printf(" type %s (no driver attached)\n",
386 type != NULL ? type : "unknown");
387 }
388
389 static struct resource_list *
390 dma_get_resource_list(device_t dev, device_t child)
391 {
392 struct dma_devinfo *ddi;
393
394 ddi = device_get_ivars(child);
395 return (&ddi->ddi_rl);
396 }
397
398 static const struct ofw_bus_devinfo *
399 dma_get_devinfo(device_t bus, device_t child)
400 {
401 struct dma_devinfo *ddi;
402
403 ddi = device_get_ivars(child);
404 return (&ddi->ddi_obdinfo);
405 }
406
407 static int
408 dma_print_res(struct dma_devinfo *ddi)
409 {
410 int rv;
411
412 rv = 0;
413 rv += resource_list_print_type(&ddi->ddi_rl, "mem", SYS_RES_MEMORY,
414 "%#jx");
415 rv += resource_list_print_type(&ddi->ddi_rl, "irq", SYS_RES_IRQ, "%jd");
416 return (rv);
417 }
Cache object: 9719c477594471eaa1dfd534088d0f24
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