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 $ */
5 * Copyright (c) 1998 The NetBSD Foundation, Inc.
8 * This code is derived from software contributed to The NetBSD Foundation
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
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.
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.
41 * Copyright (c) 1994 Peter Galbavy. All rights reserved.
42 * Copyright (c) 2005 Marius Strobl <marius@FreeBSD.org>. All rights reserved.
44 * Redistribution and use in source and binary forms, with or without
45 * modification, are permitted provided that the following conditions
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.
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.
65 #include <sys/cdefs.h>
66 __FBSDID("$FreeBSD$");
68 #include <sys/param.h>
69 #include <sys/systm.h>
71 #include <sys/kernel.h>
72 #include <sys/module.h>
75 #include <dev/ofw/ofw_bus.h>
76 #include <dev/ofw/ofw_bus_subr.h>
77 #include <dev/ofw/openfirm.h>
79 #include <machine/bus.h>
80 #include <machine/bus_common.h>
81 #include <machine/resource.h>
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>
90 struct ofw_bus_devinfo ddi_obdinfo;
91 struct resource_list ddi_rl;
95 struct lsi64854_softc sc_lsi64854; /* base device */
100 static devclass_t dma_devclass;
102 static device_probe_t dma_probe;
103 static device_attach_t dma_attach;
104 static bus_print_child_t dma_print_child;
105 static bus_probe_nomatch_t dma_probe_nomatch;
106 static bus_get_resource_list_t dma_get_resource_list;
107 static ofw_bus_get_devinfo_t dma_get_devinfo;
109 static struct dma_devinfo *dma_setup_dinfo(device_t, struct dma_softc *,
111 static void dma_destroy_dinfo(struct dma_devinfo *);
112 static int dma_print_res(struct dma_devinfo *);
114 static device_method_t dma_methods[] = {
115 /* Device interface */
116 DEVMETHOD(device_probe, dma_probe),
117 DEVMETHOD(device_attach, dma_attach),
118 DEVMETHOD(device_shutdown, bus_generic_shutdown),
119 DEVMETHOD(device_suspend, bus_generic_suspend),
120 DEVMETHOD(device_resume, bus_generic_resume),
123 DEVMETHOD(bus_print_child, dma_print_child),
124 DEVMETHOD(bus_probe_nomatch, dma_probe_nomatch),
125 DEVMETHOD(bus_alloc_resource, bus_generic_rl_alloc_resource),
126 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
127 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
128 DEVMETHOD(bus_release_resource, bus_generic_rl_release_resource),
129 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
130 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
131 DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource),
132 DEVMETHOD(bus_get_resource_list, dma_get_resource_list),
134 /* ofw_bus interface */
135 DEVMETHOD(ofw_bus_get_devinfo, dma_get_devinfo),
136 DEVMETHOD(ofw_bus_get_compat, ofw_bus_gen_get_compat),
137 DEVMETHOD(ofw_bus_get_model, ofw_bus_gen_get_model),
138 DEVMETHOD(ofw_bus_get_name, ofw_bus_gen_get_name),
139 DEVMETHOD(ofw_bus_get_node, ofw_bus_gen_get_node),
140 DEVMETHOD(ofw_bus_get_type, ofw_bus_gen_get_type),
145 static driver_t dma_driver = {
148 sizeof(struct dma_softc),
151 DRIVER_MODULE(dma, sbus, dma_driver, dma_devclass, 0, 0);
152 MODULE_DEPEND(dma, sbus, 1, 1, 1);
153 MODULE_VERSION(dma, 1);
156 dma_probe(device_t dev)
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);
170 dma_attach(device_t dev)
172 struct dma_softc *dsc;
173 struct lsi64854_softc *lsc;
174 struct dma_devinfo *ddi;
179 phandle_t child, node;
182 dsc = device_get_softc(dev);
183 lsc = &dsc->sc_lsi64854;
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);
191 lsc->sc_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &i,
193 if (lsc->sc_res == NULL) {
194 device_printf(dev, "cannot allocate resources\n");
198 if (strcmp(name, "espdma") == 0 || strcmp(name, "dma") == 0)
199 lsc->sc_channel = L64854_CHANNEL_SCSI;
200 else if (strcmp(name, "ledma") == 0) {
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.
208 csr = L64854_GCSR(lsc);
209 if ((OF_getprop_alloc(node, "cable-selection", 1,
210 (void **)&cabletype)) == -1) {
211 /* assume TP if nothing there */
214 if (strcmp(cabletype, "aui") == 0)
218 free(cabletype, M_OFWPROP);
220 L64854_SCSR(lsc, csr);
221 DELAY(20000); /* manual says we need a 20ms delay */
222 lsc->sc_channel = L64854_CHANNEL_ENET;
224 device_printf(dev, "unsupported DMA channel\n");
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 */
237 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
239 NULL, NULL, /* no locking */
240 &lsc->sc_parent_dmat);
242 device_printf(dev, "cannot allocate parent DMA tag\n");
246 i = sbus_get_burstsz(dev);
247 lsc->sc_burst = (i & SBUS_BURST_32) ? 32 :
248 (i & SBUS_BURST_16) ? 16 : 0;
251 /* Attach children. */
253 for (child = OF_child(node); child != 0; child = OF_peer(child)) {
254 if ((ddi = dma_setup_dinfo(dev, dsc, child)) == NULL)
258 "<%s>: only one child per DMA channel supported\n",
259 ddi->ddi_obdinfo.obd_name);
260 dma_destroy_dinfo(ddi);
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);
269 device_set_ivars(cdev, ddi);
272 return (bus_generic_attach(dev));
275 bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(lsc->sc_res),
280 static struct dma_devinfo *
281 dma_setup_dinfo(device_t dev, struct dma_softc *dsc, phandle_t node)
283 struct dma_devinfo *ddi;
284 struct sbus_regs *reg;
285 uint32_t base, iv, *intr;
286 int i, nreg, nintr, slot, rslot;
288 ddi = malloc(sizeof(*ddi), M_DEVBUF, M_WAITOK | M_ZERO);
289 if (ofw_bus_gen_setup_devinfo(&ddi->ddi_obdinfo, node) != 0) {
293 resource_list_init(&ddi->ddi_rl);
295 nreg = OF_getprop_alloc(node, "reg", sizeof(*reg), (void **)®);
297 device_printf(dev, "<%s>: incomplete\n",
298 ddi->ddi_obdinfo.obd_name);
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);
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);
316 resource_list_add(&ddi->ddi_rl, SYS_RES_MEMORY, i, base,
317 base + reg[i].sbr_size, reg[i].sbr_size);
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);
327 * The `interrupts' property contains the SBus interrupt level.
329 nintr = OF_getprop_alloc(node, "interrupts", sizeof(*intr),
332 for (i = 0; i < nintr; i++) {
335 * SBus card devices need the slot number encoded into
336 * the vector as this is generally not done.
338 if ((iv & INTMAP_OBIO_MASK) == 0)
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,
345 free(intr, M_OFWPROP);
350 dma_destroy_dinfo(ddi);
355 dma_destroy_dinfo(struct dma_devinfo *dinfo)
358 resource_list_free(&dinfo->ddi_rl);
359 ofw_bus_gen_destroy_devinfo(&dinfo->ddi_obdinfo);
360 free(dinfo, M_DEVBUF);
364 dma_print_child(device_t dev, device_t child)
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);
375 dma_probe_nomatch(device_t dev, device_t child)
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");
386 static struct resource_list *
387 dma_get_resource_list(device_t dev, device_t child)
389 struct dma_devinfo *ddi;
391 ddi = device_get_ivars(child);
392 return (&ddi->ddi_rl);
395 static const struct ofw_bus_devinfo *
396 dma_get_devinfo(device_t bus, device_t child)
398 struct dma_devinfo *ddi;
400 ddi = device_get_ivars(child);
401 return (&ddi->ddi_obdinfo);
405 dma_print_res(struct dma_devinfo *ddi)
410 rv += resource_list_print_type(&ddi->ddi_rl, "mem", SYS_RES_MEMORY,
412 rv += resource_list_print_type(&ddi->ddi_rl, "irq", SYS_RES_IRQ, "%ld");