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 * 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 *
20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 */
32
33 /*-
34 * Copyright (c) 1994 Peter Galbavy. All rights reserved.
35 * Copyright (c) 2005 Marius Strobl <marius@FreeBSD.org>. All rights reserved.
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 *
46 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
47 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
48 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
49 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
50 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
51 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
52 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
53 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
54 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
55 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
56 */
57
58 #include <sys/cdefs.h>
59 __FBSDID("$FreeBSD: releng/9.0/sys/sparc64/sbus/dma_sbus.c 219567 2011-03-12 14:33:32Z marius $");
60
61 #include <sys/param.h>
62 #include <sys/systm.h>
63 #include <sys/bus.h>
64 #include <sys/kernel.h>
65 #include <sys/module.h>
66 #include <sys/rman.h>
67
68 #include <dev/ofw/ofw_bus.h>
69 #include <dev/ofw/ofw_bus_subr.h>
70 #include <dev/ofw/openfirm.h>
71
72 #include <machine/bus.h>
73 #include <machine/bus_common.h>
74 #include <machine/resource.h>
75
76 #include <sparc64/sbus/lsi64854reg.h>
77 #include <sparc64/sbus/lsi64854var.h>
78 #include <sparc64/sbus/ofw_sbus.h>
79 #include <sparc64/sbus/sbusreg.h>
80 #include <sparc64/sbus/sbusvar.h>
81
82 struct dma_devinfo {
83 struct ofw_bus_devinfo ddi_obdinfo;
84 struct resource_list ddi_rl;
85 };
86
87 struct dma_softc {
88 struct lsi64854_softc sc_lsi64854; /* base device */
89 int sc_ign;
90 int sc_slot;
91 };
92
93 static devclass_t dma_devclass;
94
95 static device_probe_t dma_probe;
96 static device_attach_t dma_attach;
97 static bus_print_child_t dma_print_child;
98 static bus_probe_nomatch_t dma_probe_nomatch;
99 static bus_get_resource_list_t dma_get_resource_list;
100 static ofw_bus_get_devinfo_t dma_get_devinfo;
101
102 static struct dma_devinfo *dma_setup_dinfo(device_t, struct dma_softc *,
103 phandle_t);
104 static void dma_destroy_dinfo(struct dma_devinfo *);
105 static int dma_print_res(struct dma_devinfo *);
106
107 static device_method_t dma_methods[] = {
108 /* Device interface */
109 DEVMETHOD(device_probe, dma_probe),
110 DEVMETHOD(device_attach, dma_attach),
111 DEVMETHOD(device_shutdown, bus_generic_shutdown),
112 DEVMETHOD(device_suspend, bus_generic_suspend),
113 DEVMETHOD(device_resume, bus_generic_resume),
114
115 /* Bus interface */
116 DEVMETHOD(bus_print_child, dma_print_child),
117 DEVMETHOD(bus_probe_nomatch, dma_probe_nomatch),
118 DEVMETHOD(bus_alloc_resource, bus_generic_rl_alloc_resource),
119 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
120 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
121 DEVMETHOD(bus_release_resource, bus_generic_rl_release_resource),
122 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
123 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
124 DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource),
125 DEVMETHOD(bus_get_resource_list, dma_get_resource_list),
126 DEVMETHOD(bus_child_pnpinfo_str, ofw_bus_gen_child_pnpinfo_str),
127
128 /* ofw_bus interface */
129 DEVMETHOD(ofw_bus_get_devinfo, dma_get_devinfo),
130 DEVMETHOD(ofw_bus_get_compat, ofw_bus_gen_get_compat),
131 DEVMETHOD(ofw_bus_get_model, ofw_bus_gen_get_model),
132 DEVMETHOD(ofw_bus_get_name, ofw_bus_gen_get_name),
133 DEVMETHOD(ofw_bus_get_node, ofw_bus_gen_get_node),
134 DEVMETHOD(ofw_bus_get_type, ofw_bus_gen_get_type),
135
136 KOBJMETHOD_END
137 };
138
139 static driver_t dma_driver = {
140 "dma",
141 dma_methods,
142 sizeof(struct dma_softc),
143 };
144
145 /*
146 * The probe order is handled by sbus(4) as we don't want the variants
147 * with children to be attached earlier than the stand-alone controllers
148 * in order to generally preserve the OFW device tree order.
149 */
150 EARLY_DRIVER_MODULE(dma, sbus, dma_driver, dma_devclass, 0, 0,
151 BUS_PASS_DEFAULT);
152 MODULE_DEPEND(dma, sbus, 1, 1, 1);
153 MODULE_VERSION(dma, 1);
154
155 static int
156 dma_probe(device_t dev)
157 {
158 const char *name;
159
160 name = ofw_bus_get_name(dev);
161 if (strcmp(name, "espdma") == 0 || strcmp(name, "dma") == 0 ||
162 strcmp(name, "ledma") == 0) {
163 device_set_desc_copy(dev, name);
164 return (0);
165 }
166 return (ENXIO);
167 }
168
169 static int
170 dma_attach(device_t dev)
171 {
172 struct dma_softc *dsc;
173 struct lsi64854_softc *lsc;
174 struct dma_devinfo *ddi;
175 device_t cdev;
176 const char *name;
177 char *cabletype;
178 uint32_t csr;
179 phandle_t child, node;
180 int error, i;
181
182 dsc = device_get_softc(dev);
183 lsc = &dsc->sc_lsi64854;
184
185 name = ofw_bus_get_name(dev);
186 node = ofw_bus_get_node(dev);
187 dsc->sc_ign = sbus_get_ign(dev);
188 dsc->sc_slot = sbus_get_slot(dev);
189
190 i = 0;
191 lsc->sc_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &i,
192 RF_ACTIVE);
193 if (lsc->sc_res == NULL) {
194 device_printf(dev, "cannot allocate resources\n");
195 return (ENXIO);
196 }
197
198 if (strcmp(name, "espdma") == 0 || strcmp(name, "dma") == 0)
199 lsc->sc_channel = L64854_CHANNEL_SCSI;
200 else if (strcmp(name, "ledma") == 0) {
201 /*
202 * Check to see which cable type is currently active and
203 * set the appropriate bit in the ledma csr so that it
204 * gets used. If we didn't netboot, the PROM won't have
205 * the "cable-selection" property; default to TP and then
206 * the user can change it via a "media" option to ifconfig.
207 */
208 csr = L64854_GCSR(lsc);
209 if ((OF_getprop_alloc(node, "cable-selection", 1,
210 (void **)&cabletype)) == -1) {
211 /* assume TP if nothing there */
212 csr |= E_TP_AUI;
213 } else {
214 if (strcmp(cabletype, "aui") == 0)
215 csr &= ~E_TP_AUI;
216 else
217 csr |= E_TP_AUI;
218 free(cabletype, M_OFWPROP);
219 }
220 L64854_SCSR(lsc, csr);
221 DELAY(20000); /* manual says we need a 20ms delay */
222 lsc->sc_channel = L64854_CHANNEL_ENET;
223 } else {
224 device_printf(dev, "unsupported DMA channel\n");
225 error = ENXIO;
226 goto fail_lres;
227 }
228
229 error = bus_dma_tag_create(
230 bus_get_dma_tag(dev), /* parent */
231 1, 0, /* alignment, boundary */
232 BUS_SPACE_MAXADDR, /* lowaddr */
233 BUS_SPACE_MAXADDR, /* highaddr */
234 NULL, NULL, /* filter, filterarg */
235 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */
236 0, /* nsegments */
237 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
238 0, /* flags */
239 NULL, NULL, /* no locking */
240 &lsc->sc_parent_dmat);
241 if (error != 0) {
242 device_printf(dev, "cannot allocate parent DMA tag\n");
243 goto fail_lres;
244 }
245
246 i = sbus_get_burstsz(dev);
247 lsc->sc_burst = (i & SBUS_BURST_32) ? 32 :
248 (i & SBUS_BURST_16) ? 16 : 0;
249 lsc->sc_dev = dev;
250
251 /* Attach children. */
252 i = 0;
253 for (child = OF_child(node); child != 0; child = OF_peer(child)) {
254 if ((ddi = dma_setup_dinfo(dev, dsc, child)) == NULL)
255 continue;
256 if (i != 0) {
257 device_printf(dev,
258 "<%s>: only one child per DMA channel supported\n",
259 ddi->ddi_obdinfo.obd_name);
260 dma_destroy_dinfo(ddi);
261 continue;
262 }
263 if ((cdev = device_add_child(dev, NULL, -1)) == NULL) {
264 device_printf(dev, "<%s>: device_add_child failed\n",
265 ddi->ddi_obdinfo.obd_name);
266 dma_destroy_dinfo(ddi);
267 continue;
268 }
269 device_set_ivars(cdev, ddi);
270 i++;
271 }
272 return (bus_generic_attach(dev));
273
274 fail_lres:
275 bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(lsc->sc_res),
276 lsc->sc_res);
277 return (error);
278 }
279
280 static struct dma_devinfo *
281 dma_setup_dinfo(device_t dev, struct dma_softc *dsc, phandle_t node)
282 {
283 struct dma_devinfo *ddi;
284 struct sbus_regs *reg;
285 uint32_t base, iv, *intr;
286 int i, nreg, nintr, slot, rslot;
287
288 ddi = malloc(sizeof(*ddi), M_DEVBUF, M_WAITOK | M_ZERO);
289 if (ofw_bus_gen_setup_devinfo(&ddi->ddi_obdinfo, node) != 0) {
290 free(ddi, M_DEVBUF);
291 return (NULL);
292 }
293 resource_list_init(&ddi->ddi_rl);
294 slot = -1;
295 nreg = OF_getprop_alloc(node, "reg", sizeof(*reg), (void **)®);
296 if (nreg == -1) {
297 device_printf(dev, "<%s>: incomplete\n",
298 ddi->ddi_obdinfo.obd_name);
299 goto fail;
300 }
301 for (i = 0; i < nreg; i++) {
302 base = reg[i].sbr_offset;
303 if (SBUS_ABS(base)) {
304 rslot = SBUS_ABS_TO_SLOT(base);
305 base = SBUS_ABS_TO_OFFSET(base);
306 } else
307 rslot = reg[i].sbr_slot;
308 if (slot != -1 && slot != rslot) {
309 device_printf(dev, "<%s>: multiple slots\n",
310 ddi->ddi_obdinfo.obd_name);
311 free(reg, M_OFWPROP);
312 goto fail;
313 }
314 slot = rslot;
315
316 resource_list_add(&ddi->ddi_rl, SYS_RES_MEMORY, i, base,
317 base + reg[i].sbr_size, reg[i].sbr_size);
318 }
319 free(reg, M_OFWPROP);
320 if (slot != dsc->sc_slot) {
321 device_printf(dev, "<%s>: parent and child slot do not match\n",
322 ddi->ddi_obdinfo.obd_name);
323 goto fail;
324 }
325
326 /*
327 * The `interrupts' property contains the SBus interrupt level.
328 */
329 nintr = OF_getprop_alloc(node, "interrupts", sizeof(*intr),
330 (void **)&intr);
331 if (nintr != -1) {
332 for (i = 0; i < nintr; i++) {
333 iv = intr[i];
334 /*
335 * SBus card devices need the slot number encoded into
336 * the vector as this is generally not done.
337 */
338 if ((iv & INTMAP_OBIO_MASK) == 0)
339 iv |= slot << 3;
340 /* Set the IGN as appropriate. */
341 iv |= dsc->sc_ign << INTMAP_IGN_SHIFT;
342 resource_list_add(&ddi->ddi_rl, SYS_RES_IRQ, i,
343 iv, iv, 1);
344 }
345 free(intr, M_OFWPROP);
346 }
347 return (ddi);
348
349 fail:
350 dma_destroy_dinfo(ddi);
351 return (NULL);
352 }
353
354 static void
355 dma_destroy_dinfo(struct dma_devinfo *dinfo)
356 {
357
358 resource_list_free(&dinfo->ddi_rl);
359 ofw_bus_gen_destroy_devinfo(&dinfo->ddi_obdinfo);
360 free(dinfo, M_DEVBUF);
361 }
362
363 static int
364 dma_print_child(device_t dev, device_t child)
365 {
366 int rv;
367
368 rv = bus_print_child_header(dev, child);
369 rv += dma_print_res(device_get_ivars(child));
370 rv += bus_print_child_footer(dev, child);
371 return (rv);
372 }
373
374 static void
375 dma_probe_nomatch(device_t dev, device_t child)
376 {
377 const char *type;
378
379 device_printf(dev, "<%s>", ofw_bus_get_name(child));
380 dma_print_res(device_get_ivars(child));
381 type = ofw_bus_get_type(child);
382 printf(" type %s (no driver attached)\n",
383 type != NULL ? type : "unknown");
384 }
385
386 static struct resource_list *
387 dma_get_resource_list(device_t dev, device_t child)
388 {
389 struct dma_devinfo *ddi;
390
391 ddi = device_get_ivars(child);
392 return (&ddi->ddi_rl);
393 }
394
395 static const struct ofw_bus_devinfo *
396 dma_get_devinfo(device_t bus, device_t child)
397 {
398 struct dma_devinfo *ddi;
399
400 ddi = device_get_ivars(child);
401 return (&ddi->ddi_obdinfo);
402 }
403
404 static int
405 dma_print_res(struct dma_devinfo *ddi)
406 {
407 int rv;
408
409 rv = 0;
410 rv += resource_list_print_type(&ddi->ddi_rl, "mem", SYS_RES_MEMORY,
411 "%#lx");
412 rv += resource_list_print_type(&ddi->ddi_rl, "irq", SYS_RES_IRQ, "%ld");
413 return (rv);
414 }
Cache object: ad6bf26abdb29d77e2af22d0d8e7512b
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