1 /* $OpenBSD: dma_sbus.c,v 1.12 2005/03/03 01:41:45 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 * Copyright (c) 2005 Marius Strobl <marius@FreeBSD.org>. All rights reserved.
43 *
44 * Redistribution and use in source and binary forms, with or without
45 * modification, are permitted provided that the following conditions
46 * are met:
47 * 1. Redistributions of source code must retain the above copyright
48 * notice, this list of conditions and the following disclaimer.
49 * 2. Redistributions in binary form must reproduce the above copyright
50 * notice, this list of conditions and the following disclaimer in the
51 * documentation and/or other materials provided with the distribution.
52 *
53 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
54 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
55 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
56 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
57 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
58 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
59 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
60 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
61 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
62 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
63 */
64
65 #include <sys/cdefs.h>
66 __FBSDID("$FreeBSD: releng/6.3/sys/sparc64/sbus/dma_sbus.c 155069 2006-01-30 22:30:51Z marius $");
67
68 #include <sys/param.h>
69 #include <sys/systm.h>
70 #include <sys/bus.h>
71 #include <sys/kernel.h>
72 #include <sys/module.h>
73 #include <sys/resource.h>
74 #include <sys/rman.h>
75
76 #include <dev/ofw/ofw_bus.h>
77 #include <dev/ofw/openfirm.h>
78
79 #include <machine/bus.h>
80 #include <machine/bus_common.h>
81 #include <machine/resource.h>
82
83 #include <sparc64/sbus/lsi64854reg.h>
84 #include <sparc64/sbus/lsi64854var.h>
85 #include <sparc64/sbus/ofw_sbus.h>
86 #include <sparc64/sbus/sbusreg.h>
87 #include <sparc64/sbus/sbusvar.h>
88
89 struct dma_devinfo {
90 char *ddi_compat; /* PROM compatible */
91 char *ddi_model; /* PROM model */
92 char *ddi_name; /* PROM name */
93 phandle_t ddi_node; /* PROM node */
94 char *ddi_type; /* PROM device_type */
95
96 struct resource_list ddi_rl;
97 };
98
99 struct dma_softc {
100 struct lsi64854_softc sc_lsi64854; /* base device */
101 int sc_ign;
102 int sc_slot;
103 };
104
105 static devclass_t dma_devclass;
106
107 static device_probe_t dma_probe;
108 static device_attach_t dma_attach;
109 static bus_print_child_t dma_print_child;
110 static bus_probe_nomatch_t dma_probe_nomatch;
111 static bus_get_resource_list_t dma_get_resource_list;
112 static ofw_bus_get_compat_t dma_get_compat;
113 static ofw_bus_get_model_t dma_get_model;
114 static ofw_bus_get_name_t dma_get_name;
115 static ofw_bus_get_node_t dma_get_node;
116 static ofw_bus_get_type_t dma_get_type;
117
118 static struct dma_devinfo *dma_setup_dinfo(device_t, phandle_t, char *);
119 static void dma_destroy_dinfo(struct dma_devinfo *);
120
121 static device_method_t dma_methods[] = {
122 /* Device interface */
123 DEVMETHOD(device_probe, dma_probe),
124 DEVMETHOD(device_attach, dma_attach),
125 DEVMETHOD(device_shutdown, bus_generic_shutdown),
126 DEVMETHOD(device_suspend, bus_generic_suspend),
127 DEVMETHOD(device_resume, bus_generic_resume),
128
129 /* Bus interface */
130 DEVMETHOD(bus_print_child, dma_print_child),
131 DEVMETHOD(bus_probe_nomatch, dma_probe_nomatch),
132 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
133 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
134 DEVMETHOD(bus_alloc_resource, bus_generic_rl_alloc_resource),
135 DEVMETHOD(bus_release_resource, bus_generic_rl_release_resource),
136 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
137 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
138 DEVMETHOD(bus_get_resource_list, dma_get_resource_list),
139 DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource),
140
141 /* ofw_bus interface */
142 DEVMETHOD(ofw_bus_get_compat, dma_get_compat),
143 DEVMETHOD(ofw_bus_get_model, dma_get_model),
144 DEVMETHOD(ofw_bus_get_name, dma_get_name),
145 DEVMETHOD(ofw_bus_get_node, dma_get_node),
146 DEVMETHOD(ofw_bus_get_type, dma_get_type),
147
148 { 0, 0 }
149 };
150
151 static driver_t dma_driver = {
152 "dma",
153 dma_methods,
154 sizeof(struct dma_softc),
155 };
156
157 DRIVER_MODULE(dma, sbus, dma_driver, dma_devclass, 0, 0);
158
159 static int
160 dma_probe(device_t dev)
161 {
162 const char *name;
163
164 name = ofw_bus_get_name(dev);
165 if (strcmp(name, "espdma") == 0 || strcmp(name, "dma") == 0 ||
166 strcmp(name, "ledma") == 0) {
167 device_set_desc_copy(dev, name);
168 return (0);
169 }
170 return (ENXIO);
171 }
172
173 static int
174 dma_attach(device_t dev)
175 {
176 struct dma_softc *dsc;
177 struct lsi64854_softc *lsc;
178 struct dma_devinfo *ddi;
179 device_t cdev;
180 const char *name;
181 char *cabletype, *cname;
182 uint32_t csr;
183 phandle_t child, node;
184 int error, burst, children;
185
186 dsc = device_get_softc(dev);
187 lsc = &dsc->sc_lsi64854;
188
189 name = ofw_bus_get_name(dev);
190 node = ofw_bus_get_node(dev);
191 dsc->sc_ign = sbus_get_ign(dev);
192 dsc->sc_slot = sbus_get_slot(dev);
193
194 lsc->sc_rid = 0;
195 lsc->sc_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &lsc->sc_rid,
196 RF_ACTIVE);
197 if (lsc->sc_res == NULL) {
198 device_printf(dev, "cannot allocate resources\n");
199 return (ENXIO);
200 }
201 lsc->sc_regt = rman_get_bustag(lsc->sc_res);
202 lsc->sc_regh = rman_get_bushandle(lsc->sc_res);
203
204 if (strcmp(name, "espdma") == 0 || strcmp(name, "dma") == 0)
205 lsc->sc_channel = L64854_CHANNEL_SCSI;
206 else if (strcmp(name, "ledma") == 0) {
207 /*
208 * Check to see which cable type is currently active and
209 * set the appropriate bit in the ledma csr so that it
210 * gets used. If we didn't netboot, the PROM won't have
211 * the "cable-selection" property; default to TP and then
212 * the user can change it via a "media" option to ifconfig.
213 */
214 csr = L64854_GCSR(lsc);
215 if ((OF_getprop_alloc(node, "cable-selection", 1,
216 (void **)&cabletype)) == -1) {
217 /* assume TP if nothing there */
218 csr |= E_TP_AUI;
219 } else {
220 if (strcmp(cabletype, "aui") == 0)
221 csr &= ~E_TP_AUI;
222 else
223 csr |= E_TP_AUI;
224 free(cabletype, M_OFWPROP);
225 }
226 L64854_SCSR(lsc, csr);
227 DELAY(20000); /* manual says we need a 20ms delay */
228 lsc->sc_channel = L64854_CHANNEL_ENET;
229 } else {
230 device_printf(dev, "unsupported DMA channel\n");
231 error = ENXIO;
232 goto fail_lres;
233 }
234
235 error = bus_dma_tag_create(
236 NULL, /* parent */
237 PAGE_SIZE, 0, /* alignment, boundary */
238 BUS_SPACE_MAXADDR, /* lowaddr */
239 BUS_SPACE_MAXADDR, /* highaddr */
240 NULL, NULL, /* filter, filterarg */
241 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */
242 0, /* nsegments */
243 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
244 0, /* flags */
245 NULL, NULL, /* no locking */
246 &lsc->sc_parent_dmat);
247 if (error != 0) {
248 device_printf(dev, "cannot allocate parent DMA tag\n");
249 goto fail_lres;
250 }
251
252 burst = sbus_get_burstsz(dev);
253 lsc->sc_burst = (burst & SBUS_BURST_32) ? 32 :
254 (burst & SBUS_BURST_16) ? 16 : 0;
255 lsc->sc_dev = dev;
256
257 error = lsi64854_attach(lsc);
258 if (error != 0) {
259 device_printf(dev, "lsi64854_attach failed\n");
260 goto fail_lpdma;
261 }
262
263 /* Attach children. */
264 children = 0;
265 for (child = OF_child(node); child != 0; child = OF_peer(child)) {
266 if ((OF_getprop_alloc(child, "name", 1, (void **)&cname)) == -1)
267 continue;
268 if ((ddi = dma_setup_dinfo(dev, child, cname)) == NULL) {
269 device_printf(dev, "<%s>: incomplete\n", cname);
270 free(cname, M_OFWPROP);
271 continue;
272 }
273 if (children != 0) {
274 device_printf(dev, "<%s>: only one child per DMA "
275 "channel supported\n", cname);
276 dma_destroy_dinfo(ddi);
277 free(cname, M_OFWPROP);
278 continue;
279 }
280 if ((cdev = device_add_child(dev, NULL, -1)) == NULL) {
281 device_printf(dev, "<%s>: device_add_child failed\n",
282 cname);
283 dma_destroy_dinfo(ddi);
284 free(cname, M_OFWPROP);
285 continue;
286 }
287 device_set_ivars(cdev, ddi);
288 children++;
289 }
290 error = bus_generic_attach(dev);
291 if (error != 0) {
292 device_printf(dev, "bus_generic_attach failed\n");
293 goto fail_lsi;
294 }
295
296 return (0);
297
298 fail_lsi:
299 lsi64854_detach(lsc);
300 fail_lpdma:
301 bus_dma_tag_destroy(lsc->sc_parent_dmat);
302 fail_lres:
303 bus_release_resource(dev, SYS_RES_MEMORY, lsc->sc_rid, lsc->sc_res);
304 return (error);
305 }
306
307 static struct dma_devinfo *
308 dma_setup_dinfo(device_t dev, phandle_t node, char *name)
309 {
310 struct dma_softc *dsc;
311 struct dma_devinfo *ddi;
312 struct sbus_regs *reg;
313 uint32_t base, iv, *intr;
314 int i, nreg, nintr, slot, rslot;
315
316 dsc = device_get_softc(dev);
317
318 ddi = malloc(sizeof(*ddi), M_DEVBUF, M_WAITOK | M_ZERO);
319 if (ddi == NULL)
320 return (NULL);
321 resource_list_init(&ddi->ddi_rl);
322 ddi->ddi_name = name;
323 ddi->ddi_node = node;
324 OF_getprop_alloc(node, "compatible", 1, (void **)&ddi->ddi_compat);
325 OF_getprop_alloc(node, "device_type", 1, (void **)&ddi->ddi_type);
326 OF_getprop_alloc(node, "model", 1, (void **)&ddi->ddi_model);
327 slot = -1;
328 nreg = OF_getprop_alloc(node, "reg", sizeof(*reg), (void **)®);
329 if (nreg == -1) {
330 dma_destroy_dinfo(ddi);
331 return (NULL);
332 }
333 for (i = 0; i < nreg; i++) {
334 base = reg[i].sbr_offset;
335 if (SBUS_ABS(base)) {
336 rslot = SBUS_ABS_TO_SLOT(base);
337 base = SBUS_ABS_TO_OFFSET(base);
338 } else
339 rslot = reg[i].sbr_slot;
340 if (slot != -1 && slot != rslot) {
341 device_printf(dev, "<%s>: multiple slots\n", name);
342 free(reg, M_OFWPROP);
343 dma_destroy_dinfo(ddi);
344 return (NULL);
345 }
346 slot = rslot;
347
348 resource_list_add(&ddi->ddi_rl, SYS_RES_MEMORY, i, base,
349 base + reg[i].sbr_size, reg[i].sbr_size);
350 }
351 free(reg, M_OFWPROP);
352 if (slot != dsc->sc_slot) {
353 device_printf(dev, "<%s>: parent and child slot do not match\n",
354 name);
355 dma_destroy_dinfo(ddi);
356 return (NULL);
357 }
358
359 /*
360 * The `interrupts' property contains the SBus interrupt level.
361 */
362 nintr = OF_getprop_alloc(node, "interrupts", sizeof(*intr),
363 (void **)&intr);
364 if (nintr != -1) {
365 for (i = 0; i < nintr; i++) {
366 iv = intr[i];
367 /*
368 * SBus card devices need the slot number encoded into
369 * the vector as this is generally not done.
370 */
371 if ((iv & INTMAP_OBIO_MASK) == 0)
372 iv |= slot << 3;
373 /* Set the IGN as appropriate. */
374 iv |= dsc->sc_ign << INTMAP_IGN_SHIFT;
375 resource_list_add(&ddi->ddi_rl, SYS_RES_IRQ, i,
376 iv, iv, 1);
377 }
378 free(intr, M_OFWPROP);
379 }
380 return (ddi);
381 }
382
383 static void
384 dma_destroy_dinfo(struct dma_devinfo *dinfo)
385 {
386
387 resource_list_free(&dinfo->ddi_rl);
388 if (dinfo->ddi_compat != NULL)
389 free(dinfo->ddi_compat, M_OFWPROP);
390 if (dinfo->ddi_model != NULL)
391 free(dinfo->ddi_model, M_OFWPROP);
392 if (dinfo->ddi_type != NULL)
393 free(dinfo->ddi_type, M_OFWPROP);
394 free(dinfo, M_DEVBUF);
395 }
396
397 static int
398 dma_print_child(device_t dev, device_t child)
399 {
400 struct dma_devinfo *ddi;
401 struct resource_list *rl;
402 int rv;
403
404 ddi = device_get_ivars(child);
405 rl = &ddi->ddi_rl;
406 rv = bus_print_child_header(dev, child);
407 rv += resource_list_print_type(rl, "mem", SYS_RES_MEMORY, "%#lx");
408 rv += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld");
409 rv += bus_print_child_footer(dev, child);
410 return (rv);
411 }
412
413 static void
414 dma_probe_nomatch(device_t dev, device_t child)
415 {
416 struct dma_devinfo *ddi;
417 struct resource_list *rl;
418
419 ddi = device_get_ivars(child);
420 rl = &ddi->ddi_rl;
421 device_printf(dev, "<%s>", ddi->ddi_name);
422 resource_list_print_type(rl, "mem", SYS_RES_MEMORY, "%#lx");
423 resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld");
424 printf(" type %s (no driver attached)\n",
425 ddi->ddi_type != NULL ? ddi->ddi_type : "unknown");
426 }
427
428 static struct resource_list *
429 dma_get_resource_list(device_t dev, device_t child)
430 {
431 struct dma_devinfo *ddi;
432
433 ddi = device_get_ivars(child);
434 return (&ddi->ddi_rl);
435 }
436
437 static const char *
438 dma_get_compat(device_t bus, device_t dev)
439 {
440 struct dma_devinfo *dinfo;
441
442 dinfo = device_get_ivars(dev);
443 return (dinfo->ddi_compat);
444 }
445
446 static const char *
447 dma_get_model(device_t bus, device_t dev)
448 {
449 struct dma_devinfo *dinfo;
450
451 dinfo = device_get_ivars(dev);
452 return (dinfo->ddi_model);
453 }
454
455 static const char *
456 dma_get_name(device_t bus, device_t dev)
457 {
458 struct dma_devinfo *dinfo;
459
460 dinfo = device_get_ivars(dev);
461 return (dinfo->ddi_name);
462 }
463
464 static phandle_t
465 dma_get_node(device_t bus, device_t dev)
466 {
467 struct dma_devinfo *dinfo;
468
469 dinfo = device_get_ivars(dev);
470 return (dinfo->ddi_node);
471 }
472
473 static const char *
474 dma_get_type(device_t bus, device_t dev)
475 {
476 struct dma_devinfo *dinfo;
477
478 dinfo = device_get_ivars(dev);
479 return (dinfo->ddi_type);
480 }
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